diff --git a/admin/presets/tests/generator/lib.php b/admin/presets/tests/generator/lib.php
index b5a385c752a1..8d6ffc9385de 100644
--- a/admin/presets/tests/generator/lib.php
+++ b/admin/presets/tests/generator/lib.php
@@ -227,7 +227,6 @@ private function add_to_config_log(string $name, string $oldvalue, string $value
     public function access_protected($object, string $property) {
         $reflection = new ReflectionClass($object);
         $property = $reflection->getProperty($property);
-        $property->setAccessible(true);
         return $property->getValue($object);
     }
 
@@ -244,7 +243,6 @@ public function get_admin_preset_setting(string $category, string $settingname):
 
         // Set method accessibility.
         $method = new ReflectionMethod(manager::class, 'get_setting');
-        $method->setAccessible(true);
 
         // Get the proper adminpresets_setting instance.
         $settingpage = $adminroot->locate($category);
diff --git a/admin/settings/plugins.php b/admin/settings/plugins.php
index 33ddda707519..43909fba3469 100644
--- a/admin/settings/plugins.php
+++ b/admin/settings/plugins.php
@@ -135,6 +135,18 @@
     $temp->add($setting);
     $ADMIN->add('authsettings', $temp);
 
+    // Toggle password visiblity icon.
+    $temp->add(new admin_setting_configselect('loginpasswordtoggle',
+        new lang_string('auth_loginpasswordtoggle', 'auth'),
+        new lang_string('auth_loginpasswordtoggle_desc', 'auth'),
+        TOGGLE_SENSITIVE_SMALL_SCREENS_ONLY,
+        [
+            TOGGLE_SENSITIVE_DISABLED => get_string('disabled', 'admin'),
+            TOGGLE_SENSITIVE_ENABLED => get_string('enabled', 'admin'),
+            TOGGLE_SENSITIVE_SMALL_SCREENS_ONLY => get_string('smallscreensonly', 'admin'),
+        ],
+    ));
+
     $temp = new admin_externalpage('authtestsettings', get_string('testsettings', 'core_auth'), new moodle_url("/auth/test_settings.php"), 'moodle/site:config', true);
     $ADMIN->add('authsettings', $temp);
 
diff --git a/admin/tool/dataprivacy/tests/expired_contexts_test.php b/admin/tool/dataprivacy/tests/expired_contexts_test.php
index abd8d997d6d6..ae50fbf2510b 100644
--- a/admin/tool/dataprivacy/tests/expired_contexts_test.php
+++ b/admin/tool/dataprivacy/tests/expired_contexts_test.php
@@ -2079,7 +2079,6 @@ public function test_progress_tracer_default() {
         $rc = new \ReflectionClass(\tool_dataprivacy\expired_contexts_manager::class);
         $rcm = $rc->getMethod('get_progress');
 
-        $rcm->setAccessible(true);
         $this->assertInstanceOf(\text_progress_trace::class, $rcm->invoke($manager));
     }
 
@@ -2094,7 +2093,6 @@ public function test_progress_tracer_set() {
         $rc = new \ReflectionClass(\tool_dataprivacy\expired_contexts_manager::class);
         $rcm = $rc->getMethod('get_progress');
 
-        $rcm->setAccessible(true);
         $this->assertSame($mytrace, $rcm->invoke($manager));
     }
 
diff --git a/admin/tool/dataprivacy/tests/filtered_userlist_test.php b/admin/tool/dataprivacy/tests/filtered_userlist_test.php
index 7d71da163707..4146e0ec7845 100644
--- a/admin/tool/dataprivacy/tests/filtered_userlist_test.php
+++ b/admin/tool/dataprivacy/tests/filtered_userlist_test.php
@@ -41,7 +41,6 @@ public function test_apply_expired_contexts_filters(array $initial, array $expir
 
         $rc = new \ReflectionClass(\tool_dataprivacy\filtered_userlist::class);
         $rcm = $rc->getMethod('set_userids');
-        $rcm->setAccessible(true);
         $rcm->invoke($userlist, $initial);
 
 
diff --git a/admin/tool/langimport/tests/locale_test.php b/admin/tool/langimport/tests/locale_test.php
index f2f121525adc..dbe51337b75d 100644
--- a/admin/tool/langimport/tests/locale_test.php
+++ b/admin/tool/langimport/tests/locale_test.php
@@ -84,7 +84,6 @@ public function test_set_locale(string $set, string $ret) {
         $loc = new locale();
         $rc = new \ReflectionClass(locale::class);
         $rm = $rc->getMethod('set_locale');
-        $rm->setAccessible(true);
 
         // Capture current locale for later restore (funnily, using the set_locale() method itself.
         $originallocale = $rm->invokeArgs($loc, [LC_ALL, 0]);
diff --git a/admin/tool/licensemanager/tests/manager_test.php b/admin/tool/licensemanager/tests/manager_test.php
index 2b9763c4ed49..3fdc0dcbf1a7 100644
--- a/admin/tool/licensemanager/tests/manager_test.php
+++ b/admin/tool/licensemanager/tests/manager_test.php
@@ -70,7 +70,6 @@ public function test_edit_existing_license() {
 
         // We're testing a private method, so we need to setup reflector magic.
         $method = new ReflectionMethod('\tool_licensemanager\manager', 'edit');
-        $method->setAccessible(true); // Allow accessing of private method.
         $method->invoke($manager, \tool_licensemanager\manager::ACTION_UPDATE, $testlicense->shortname);
 
         // Should not create a new license when updating an existing license.
@@ -90,7 +89,6 @@ public function test_edit_license_not_exists() {
 
         // We're testing a private method, so we need to setup reflector magic.
         $method = new ReflectionMethod('\tool_licensemanager\manager', 'edit');
-        $method->setAccessible(true); // Allow accessing of private method.
 
         // Attempt to update a license that doesn't exist.
         $formdata = [
@@ -111,7 +109,6 @@ public function test_edit_license_no_shortname() {
 
         // We're testing a private method, so we need to setup reflector magic.
         $method = new ReflectionMethod('\tool_licensemanager\manager', 'edit');
-        $method->setAccessible(true); // Allow accessing of private method.
 
         // Attempt to update a license without passing license shortname.
         $formdata = [
@@ -148,7 +145,6 @@ public function test_edit_create_license() {
 
         // We're testing a private method, so we need to setup reflector magic.
         $method = new ReflectionMethod('\tool_licensemanager\manager', 'edit');
-        $method->setAccessible(true); // Allow accessing of private method.
         $method->invoke($manager, \tool_licensemanager\manager::ACTION_CREATE, $formdata['shortname']);
 
         // Should create a new license in database.
@@ -180,7 +176,6 @@ public function test_change_license_order() {
 
         // We're testing a private method, so we need to setup reflector magic.
         $method = new ReflectionMethod('\tool_licensemanager\manager', 'change_license_order');
-        $method->setAccessible(true); // Allow accessing of private method.
         $method->invoke($manager, \tool_licensemanager\manager::ACTION_MOVE_UP, 'cc-nc-4.0');
 
         $licenseorder = array_keys(license_manager::get_licenses());
diff --git a/admin/tool/mfa/factor/email/tests/factor_test.php b/admin/tool/mfa/factor/email/tests/factor_test.php
index e0923555e70f..55a45585eda3 100644
--- a/admin/tool/mfa/factor/email/tests/factor_test.php
+++ b/admin/tool/mfa/factor/email/tests/factor_test.php
@@ -39,7 +39,6 @@ public function test_check_verification_code() {
         $emailfactorclass = new \factor_email\factor('email');
         $rc = new \ReflectionClass($emailfactorclass::class);
         $rcm = $rc->getMethod('check_verification_code');
-        $rcm->setAccessible(true);
 
         // Assigned email to be used in getting the email factor.
         $USER->email = 'user@mail.com';
@@ -76,7 +75,6 @@ public function test_check_verification_code() {
 
         // Cleans up email records once MFA passed.
         $rcm = $rc->getMethod('post_pass_state');
-        $rcm->setAccessible(true);
         $rcm->invoke($emailfactorclass);
 
         // Check if the email records have been deleted.
diff --git a/admin/tool/mfa/factor/sms/tests/factor_test.php b/admin/tool/mfa/factor/sms/tests/factor_test.php
index 978916fc1b43..49e3e9a33139 100644
--- a/admin/tool/mfa/factor/sms/tests/factor_test.php
+++ b/admin/tool/mfa/factor/sms/tests/factor_test.php
@@ -154,7 +154,6 @@ public function test_check_verification_code(): void {
 
         // Check verification code.
         $rcm = $rc->getMethod('check_verification_code');
-        $rcm->setAccessible(true);
         $this->assertTrue($rcm->invoke($smsfactor, $secretcode));
 
         // Test that calling the revoke on the generic type revokes all.
diff --git a/admin/tool/mfa/factor/token/tests/factor_test.php b/admin/tool/mfa/factor/token/tests/factor_test.php
index 3a0b1450c66e..62c63cd92dd6 100644
--- a/admin/tool/mfa/factor/token/tests/factor_test.php
+++ b/admin/tool/mfa/factor/token/tests/factor_test.php
@@ -50,7 +50,6 @@ public function test_calculate_expiry_time_in_general() {
 
         set_config('expireovernight', 0, 'factor_token');
         $method = new \ReflectionMethod($this->factor, 'calculate_expiry_time');
-        $method->setAccessible(true);
 
         // Test that non-overnight timestamps are just exactly as configured.
         // We don't need to care about 0 or negative ints, they will just make the cookie expire immediately.
@@ -95,7 +94,6 @@ public function test_calculate_expiry_time_in_general() {
     public function test_calculate_expiry_time_for_overnight_expiry_with_one_day_expiry($timestamp) {
         // Setup configuration.
         $method = new \ReflectionMethod($this->factor, 'calculate_expiry_time');
-        $method->setAccessible(true);
         set_config('expireovernight', 1, 'factor_token');
         set_config('expiry', DAYSECS, 'factor_token');
 
@@ -144,7 +142,6 @@ public function test_calculate_expiry_time_for_overnight_expiry_with_one_day_exp
     public function test_calculate_expiry_time_for_overnight_expiry_with_two_day_expiry($timestamp) {
         // Setup configuration.
         $method = new \ReflectionMethod($this->factor, 'calculate_expiry_time');
-        $method->setAccessible(true);
         set_config('expireovernight', 1, 'factor_token');
         set_config('expiry', 2 * DAYSECS, 'factor_token');
 
@@ -195,7 +192,6 @@ public function test_calculate_expiry_time_for_overnight_expiry_with_two_day_exp
     public function test_calculate_expiry_time_for_overnight_expiry_with_three_hour_expiry($timestamp) {
         // Setup configuration.
         $method = new \ReflectionMethod($this->factor, 'calculate_expiry_time');
-        $method->setAccessible(true);
         set_config('expireovernight', 1, 'factor_token');
         set_config('expiry', 3 * HOURSECS, 'factor_token');
 
@@ -240,7 +236,6 @@ public function test_calculate_expiry_time_for_overnight_expiry_with_three_hour_
     public function test_calculate_expiry_time_for_overnight_expiry_with_an_hour_expiry($timestamp) {
         // Setup configuration.
         $method = new \ReflectionMethod($this->factor, 'calculate_expiry_time');
-        $method->setAccessible(true);
         set_config('expireovernight', 1, 'factor_token');
         set_config('expiry', HOURSECS, 'factor_token');
 
diff --git a/admin/tool/mfa/tests/secret_manager_test.php b/admin/tool/mfa/tests/secret_manager_test.php
index b9b293f52ee8..d426dfe0b8f2 100644
--- a/admin/tool/mfa/tests/secret_manager_test.php
+++ b/admin/tool/mfa/tests/secret_manager_test.php
@@ -42,7 +42,6 @@ public function test_create_secret() {
 
         // Mutate the sessionid using reflection.
         $reflectedsessionid = new \ReflectionProperty($secman, 'sessionid');
-        $reflectedsessionid->setAccessible(true);
         $reflectedsessionid->setValue($secman, 'fakesession');
 
         $sec1 = $secman->create_secret(1800, false);
@@ -97,7 +96,6 @@ public function test_add_secret_to_db() {
         // Let's make stuff public using reflection.
         $reflectedscanner = new \ReflectionClass($secman);
         $reflectedmethod = $reflectedscanner->getMethod('add_secret_to_db');
-        $reflectedmethod->setAccessible(true);
 
         // Now add a secret and confirm it creates the correct record.
         $reflectedmethod->invoke($secman, 'code', 1800);
@@ -164,7 +162,6 @@ public function test_validate_secret() {
         // Session locked code from the same session id.
         // Mutate the sessionid using reflection.
         $reflectedsessionid = new \ReflectionProperty($secman, 'sessionid');
-        $reflectedsessionid->setAccessible(true);
         $reflectedsessionid->setValue($secman, 'fakesession');
 
         $secret = $secman->create_secret(1800, true);
@@ -227,7 +224,6 @@ public function test_has_active_secret() {
         $reflectedscanner = new \ReflectionClass($secman);
 
         $reflectedmethod = $reflectedscanner->getMethod('has_active_secret');
-        $reflectedmethod->setAccessible(true);
 
         // DB secrets.
         $this->assertFalse($reflectedmethod->invoke($secman));
@@ -244,7 +240,6 @@ public function test_has_active_secret() {
         // Now check a secret with session involvement.
         // Mutate the sessionid using reflection.
         $reflectedsessionid = new \ReflectionProperty($secman, 'sessionid');
-        $reflectedsessionid->setAccessible(true);
         $reflectedsessionid->setValue($secman, 'fakesession');
 
         $this->assertFalse($reflectedmethod->invoke($secman, true));
diff --git a/admin/tool/mobile/classes/local/hooks/output/standard_head_html_prepend.php b/admin/tool/mobile/classes/local/hook/output/before_standard_head_html_generation.php
similarity index 86%
rename from admin/tool/mobile/classes/local/hooks/output/standard_head_html_prepend.php
rename to admin/tool/mobile/classes/local/hook/output/before_standard_head_html_generation.php
index f349ea392606..7d4ddbb4dcc3 100644
--- a/admin/tool/mobile/classes/local/hooks/output/standard_head_html_prepend.php
+++ b/admin/tool/mobile/classes/local/hook/output/before_standard_head_html_generation.php
@@ -14,7 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-namespace tool_mobile\local\hooks\output;
+namespace tool_mobile\local\hook\output;
 
 /**
  * Allows plugins to add any elements to the page <head> html tag
@@ -23,14 +23,13 @@
  * @copyright  2023 Marina Glancy
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
-class standard_head_html_prepend {
-
+class before_standard_head_html_generation {
     /**
      * Callback to add head elements.
      *
-     * @param \core\hook\output\standard_head_html_prepend $hook
+     * @param \core\hook\output\before_standard_head_html_generation $hook
      */
-    public static function callback(\core\hook\output\standard_head_html_prepend $hook): void {
+    public static function callback(\core\hook\output\before_standard_head_html_generation $hook): void {
         global $CFG, $PAGE;
         // Smart App Banners meta tag is only displayed if mobile services are enabled and configured.
         if (!empty($CFG->enablemobilewebservice)) {
@@ -45,7 +44,7 @@ public static function callback(\core\hook\output\standard_head_html_prepend $ho
 
                 if (!empty($mobilesettings->androidappid)) {
                     $mobilemanifesturl = "$CFG->wwwroot/$CFG->admin/tool/mobile/mobile.webmanifest.php";
-                    $hook->add_html('<link rel="manifest" href="'.$mobilemanifesturl.'" />');
+                    $hook->add_html('<link rel="manifest" href="' . $mobilemanifesturl . '" />');
                 }
             }
         }
diff --git a/admin/tool/mobile/db/hooks.php b/admin/tool/mobile/db/hooks.php
index 60e2d927e8c8..91b54ffc7a5f 100644
--- a/admin/tool/mobile/db/hooks.php
+++ b/admin/tool/mobile/db/hooks.php
@@ -26,8 +26,8 @@
 
 $callbacks = [
     [
-        'hook' => core\hook\output\standard_head_html_prepend::class,
-        'callback' => 'tool_mobile\local\hooks\output\standard_head_html_prepend::callback',
+        'hook' => core\hook\output\before_standard_head_html_generation::class,
+        'callback' => 'tool_mobile\local\hook\output\before_standard_head_html_generation::callback',
         'priority' => 0,
     ],
 ];
diff --git a/admin/tool/mobile/version.php b/admin/tool/mobile/version.php
index 7f18ff304820..adf67504ef0d 100644
--- a/admin/tool/mobile/version.php
+++ b/admin/tool/mobile/version.php
@@ -23,7 +23,7 @@
  */
 
 defined('MOODLE_INTERNAL') || die();
-$plugin->version   = 2023100900; // The current plugin version (Date: YYYYMMDDXX).
+$plugin->version   = 2024022600; // The current plugin version (Date: YYYYMMDDXX).
 $plugin->requires  = 2023100400; // Requires this Moodle version.
 $plugin->component = 'tool_mobile'; // Full name of the plugin (used for diagnostics).
 $plugin->dependencies = [
diff --git a/admin/tool/usertours/classes/cache.php b/admin/tool/usertours/classes/cache.php
index 28f5eb34e10d..a053fc5fd11f 100644
--- a/admin/tool/usertours/classes/cache.php
+++ b/admin/tool/usertours/classes/cache.php
@@ -14,21 +14,12 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Cache manager.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours;
 
-defined('MOODLE_INTERNAL') || die();
-
 /**
  * Cache manager.
  *
+ * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
@@ -97,7 +88,7 @@ public static function get_matching_tourdata(\moodle_url $targetmatch) {
         }
 
         $target = $targetmatch->out_as_local_url();
-        return array_filter($tours, function($tour) use ($possiblematches, $target) {
+        return array_filter($tours, function ($tour) use ($possiblematches, $target) {
             if (in_array($tour->pathmatch, $possiblematches)) {
                 return true;
             }
diff --git a/admin/tool/usertours/classes/configuration.php b/admin/tool/usertours/classes/configuration.php
index ae63554eb30e..2f18c29be7b7 100644
--- a/admin/tool/usertours/classes/configuration.php
+++ b/admin/tool/usertours/classes/configuration.php
@@ -14,26 +14,16 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Step configuration detail class.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours;
 
-defined('MOODLE_INTERNAL') || die();
-
 /**
  * Step configuration detail class.
  *
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
+ * @package tool_usertours
+ * @copyright  2024 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 class configuration {
-
     /**
      * @var TOURDEFAULT
      */
@@ -60,7 +50,7 @@ public static function get_defaultable_keys() {
      * @return  mixed
      */
     public static function get_default_value($key) {
-        switch($key) {
+        switch ($key) {
             case 'placement':
                 return 'bottom';
             case 'orphan':
@@ -77,7 +67,7 @@ public static function get_default_value($key) {
      * @return  mixed
      */
     public static function get_step_default_value($key) {
-        switch($key) {
+        switch ($key) {
             case 'placement':
             case 'orphan':
             case 'backdrop':
@@ -94,10 +84,10 @@ public static function get_step_default_value($key) {
      */
     public static function get_placement_options($default = null) {
         $values = [
-            'top'    => get_string('above',   'tool_usertours'),
-            'bottom' => get_string('below',   'tool_usertours'),
-            'left'   => get_string('left',    'tool_usertours'),
-            'right'  => get_string('right',   'tool_usertours'),
+            'top'    => get_string('above', 'tool_usertours'),
+            'bottom' => get_string('below', 'tool_usertours'),
+            'left'   => get_string('left', 'tool_usertours'),
+            'right'  => get_string('right', 'tool_usertours'),
         ];
 
         if ($default === null) {
@@ -114,5 +104,4 @@ public static function get_placement_options($default = null) {
 
         return $values;
     }
-
 }
diff --git a/admin/tool/usertours/classes/event/step_shown.php b/admin/tool/usertours/classes/event/step_shown.php
index 3537b61f7b7a..72ff3b4a6d52 100644
--- a/admin/tool/usertours/classes/event/step_shown.php
+++ b/admin/tool/usertours/classes/event/step_shown.php
@@ -14,18 +14,8 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * The tool_usertours step_shown event.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours\event;
 
-defined('MOODLE_INTERNAL') || die();
-
 /**
  * The tool_usertours step_shown event.
  *
@@ -41,7 +31,6 @@
  * }
  */
 class step_shown extends \core\event\base {
-
     /**
      * Init method.
      */
diff --git a/admin/tool/usertours/classes/event/tour_ended.php b/admin/tool/usertours/classes/event/tour_ended.php
index 945d1e4eeb92..6853dd4a8605 100644
--- a/admin/tool/usertours/classes/event/tour_ended.php
+++ b/admin/tool/usertours/classes/event/tour_ended.php
@@ -14,18 +14,8 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * The tool_usertours tour_ended event.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours\event;
 
-defined('MOODLE_INTERNAL') || die();
-
 /**
  * The tool_usertours tour_ended event.
  *
@@ -41,7 +31,6 @@
  * }
  */
 class tour_ended extends \core\event\base {
-
     /**
      * Init method.
      */
diff --git a/admin/tool/usertours/classes/event/tour_reset.php b/admin/tool/usertours/classes/event/tour_reset.php
index bd9e60d02c22..660f35f5db12 100644
--- a/admin/tool/usertours/classes/event/tour_reset.php
+++ b/admin/tool/usertours/classes/event/tour_reset.php
@@ -14,18 +14,8 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * The tool_usertours tour_reset event.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours\event;
 
-defined('MOODLE_INTERNAL') || die();
-
 /**
  * The tool_usertours tour_reset event.
  *
@@ -41,7 +31,6 @@
  * }
  */
 class tour_reset extends \core\event\base {
-
     /**
      * Init method.
      */
diff --git a/admin/tool/usertours/classes/event/tour_started.php b/admin/tool/usertours/classes/event/tour_started.php
index 915cb586de37..d44114f051c2 100644
--- a/admin/tool/usertours/classes/event/tour_started.php
+++ b/admin/tool/usertours/classes/event/tour_started.php
@@ -14,18 +14,8 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * The tool_usertours tour_started event.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours\event;
 
-defined('MOODLE_INTERNAL') || die();
-
 /**
  * The tool_usertours tour_started event.
  *
@@ -41,7 +31,6 @@
  * }
  */
 class tour_started extends \core\event\base {
-
     /**
      * Init method.
      */
diff --git a/admin/tool/usertours/classes/external/tour.php b/admin/tool/usertours/classes/external/tour.php
index 649becb5de8d..9ecad8e43ac2 100644
--- a/admin/tool/usertours/classes/external/tour.php
+++ b/admin/tool/usertours/classes/external/tour.php
@@ -43,10 +43,10 @@ public static function fetch_and_start_tour($tourid, $context, $pageurl) {
         global $PAGE;
 
         $params = self::validate_parameters(self::fetch_and_start_tour_parameters(), [
-                'tourid'    => $tourid,
-                'context'   => $context,
-                'pageurl'   => $pageurl,
-            ]);
+            'tourid' => $tourid,
+            'context' => $context,
+            'pageurl' => $pageurl,
+        ]);
 
         $context = \context_helper::instance_by_id($params['context']);
         self::validate_context($context);
@@ -60,8 +60,8 @@ public static function fetch_and_start_tour($tourid, $context, $pageurl) {
 
         \tool_usertours\event\tour_started::create([
             'contextid' => $context->id,
-            'objectid'  => $tour->get_id(),
-            'other'     => [
+            'objectid' => $tour->get_id(),
+            'other' => [
                 'pageurl' => $params['pageurl'],
             ],
         ])->trigger();
@@ -78,9 +78,9 @@ public static function fetch_and_start_tour($tourid, $context, $pageurl) {
      */
     public static function fetch_and_start_tour_parameters() {
         return new external_function_parameters([
-            'tourid'    => new external_value(PARAM_INT, 'Tour ID'),
-            'context'   => new external_value(PARAM_INT, 'Context ID'),
-            'pageurl'   => new external_value(PARAM_URL, 'Page URL'),
+            'tourid' => new external_value(PARAM_INT, 'Tour ID'),
+            'context' => new external_value(PARAM_INT, 'Context ID'),
+            'pageurl' => new external_value(PARAM_URL, 'Page URL'),
         ]);
     }
 
@@ -91,12 +91,12 @@ public static function fetch_and_start_tour_parameters() {
      */
     public static function fetch_and_start_tour_returns() {
         return new external_single_structure([
-            'tourconfig'        => new external_single_structure([
-                'name'          => new external_value(PARAM_RAW, 'Tour Name'),
-                'steps'         => new external_multiple_structure(self::step_structure_returns()),
-                'endtourlabel'  => new external_value(PARAM_RAW, 'Label of the end tour button'),
+            'tourconfig' => new external_single_structure([
+                'name' => new external_value(PARAM_RAW, 'Tour Name'),
+                'steps' => new external_multiple_structure(self::step_structure_returns()),
+                'endtourlabel' => new external_value(PARAM_RAW, 'Label of the end tour button'),
                 'displaystepnumbers' => new external_value(PARAM_BOOL, 'display step number'),
-            ], 'Tour config', VALUE_OPTIONAL)
+            ], 'Tour config', VALUE_OPTIONAL),
         ]);
     }
 
@@ -110,10 +110,10 @@ public static function fetch_and_start_tour_returns() {
      */
     public static function reset_tour($tourid, $context, $pageurl) {
         $params = self::validate_parameters(self::reset_tour_parameters(), [
-                'tourid'    => $tourid,
-                'context'   => $context,
-                'pageurl'   => $pageurl,
-            ]);
+            'tourid' => $tourid,
+            'context' => $context,
+            'pageurl' => $pageurl,
+        ]);
 
         $context = \context_helper::instance_by_id($params['context']);
         self::validate_context($context);
@@ -130,9 +130,9 @@ public static function reset_tour($tourid, $context, $pageurl) {
 
                 \tool_usertours\event\tour_reset::create([
                     'contextid' => $context->id,
-                    'objectid'  => $params['tourid'],
-                    'other'     => [
-                        'pageurl'   => $params['pageurl'],
+                    'objectid' => $params['tourid'],
+                    'other' => [
+                        'pageurl' => $params['pageurl'],
                     ],
                 ])->trigger();
                 break;
@@ -149,9 +149,9 @@ public static function reset_tour($tourid, $context, $pageurl) {
      */
     public static function reset_tour_parameters() {
         return new external_function_parameters([
-            'tourid'    => new external_value(PARAM_INT, 'Tour ID'),
-            'context'   => new external_value(PARAM_INT, 'Context ID'),
-            'pageurl'   => new external_value(PARAM_URL, 'Current page location'),
+            'tourid' => new external_value(PARAM_INT, 'Tour ID'),
+            'context' => new external_value(PARAM_INT, 'Context ID'),
+            'pageurl' => new external_value(PARAM_URL, 'Current page location'),
         ]);
     }
 
@@ -162,7 +162,7 @@ public static function reset_tour_parameters() {
      */
     public static function reset_tour_returns() {
         return new external_single_structure([
-            'startTour'     => new external_value(PARAM_INT, 'Tour ID', VALUE_OPTIONAL),
+            'startTour' => new external_value(PARAM_INT, 'Tour ID', VALUE_OPTIONAL),
         ]);
     }
 
@@ -178,25 +178,26 @@ public static function reset_tour_returns() {
      */
     public static function complete_tour($tourid, $context, $pageurl, $stepid, $stepindex) {
         $params = self::validate_parameters(self::complete_tour_parameters(), [
-                'tourid'    => $tourid,
-                'context'   => $context,
-                'pageurl'   => $pageurl,
-                'stepid'    => $stepid,
-                'stepindex' => $stepindex,
-            ]);
+            'tourid' => $tourid,
+            'context' => $context,
+            'pageurl' => $pageurl,
+            'stepid' => $stepid,
+            'stepindex' => $stepindex,
+        ]);
 
         $context = \context_helper::instance_by_id($params['context']);
         self::validate_context($context);
 
         $tour = tourinstance::instance($params['tourid']);
+
         $tour->mark_user_completed();
 
         \tool_usertours\event\tour_ended::create([
             'contextid' => $context->id,
-            'objectid'  => $params['tourid'],
-            'other'     => [
-                'pageurl'   => $params['pageurl'],
-                'stepid'    => $params['stepid'],
+            'objectid' => $params['tourid'],
+            'other' => [
+                'pageurl' => $params['pageurl'],
+                'stepid' => $params['stepid'],
                 'stepindex' => $params['stepindex'],
             ],
         ])->trigger();
@@ -211,10 +212,10 @@ public static function complete_tour($tourid, $context, $pageurl, $stepid, $step
      */
     public static function complete_tour_parameters() {
         return new external_function_parameters([
-            'tourid'    => new external_value(PARAM_INT, 'Tour ID'),
-            'context'   => new external_value(PARAM_INT, 'Context ID'),
-            'pageurl'   => new external_value(PARAM_LOCALURL, 'Page URL'),
-            'stepid'    => new external_value(PARAM_INT, 'Step ID'),
+            'tourid' => new external_value(PARAM_INT, 'Tour ID'),
+            'context' => new external_value(PARAM_INT, 'Context ID'),
+            'pageurl' => new external_value(PARAM_LOCALURL, 'Page URL'),
+            'stepid' => new external_value(PARAM_INT, 'Step ID'),
             'stepindex' => new external_value(PARAM_INT, 'Step Number'),
         ]);
     }
@@ -240,12 +241,12 @@ public static function complete_tour_returns() {
      */
     public static function step_shown($tourid, $context, $pageurl, $stepid, $stepindex) {
         $params = self::validate_parameters(self::step_shown_parameters(), [
-                'tourid'    => $tourid,
-                'context'   => $context,
-                'pageurl'   => $pageurl,
-                'stepid'    => $stepid,
-                'stepindex' => $stepindex,
-            ]);
+            'tourid' => $tourid,
+            'context' => $context,
+            'pageurl' => $pageurl,
+            'stepid' => $stepid,
+            'stepindex' => $stepindex,
+        ]);
 
         $context = \context_helper::instance_by_id($params['context']);
         self::validate_context($context);
@@ -257,11 +258,11 @@ public static function step_shown($tourid, $context, $pageurl, $stepid, $stepind
 
         \tool_usertours\event\step_shown::create([
             'contextid' => $context->id,
-            'objectid'  => $params['stepid'],
+            'objectid' => $params['stepid'],
 
-            'other'     => [
-                'pageurl'   => $params['pageurl'],
-                'tourid'    => $params['tourid'],
+            'other' => [
+                'pageurl' => $params['pageurl'],
+                'tourid' => $params['tourid'],
                 'stepindex' => $params['stepindex'],
             ],
         ])->trigger();
@@ -276,10 +277,10 @@ public static function step_shown($tourid, $context, $pageurl, $stepid, $stepind
      */
     public static function step_shown_parameters() {
         return new external_function_parameters([
-            'tourid'    => new external_value(PARAM_INT, 'Tour ID'),
-            'context'   => new external_value(PARAM_INT, 'Context ID'),
-            'pageurl'   => new external_value(PARAM_URL, 'Page URL'),
-            'stepid'    => new external_value(PARAM_INT, 'Step ID'),
+            'tourid' => new external_value(PARAM_INT, 'Tour ID'),
+            'context' => new external_value(PARAM_INT, 'Context ID'),
+            'pageurl' => new external_value(PARAM_URL, 'Page URL'),
+            'stepid' => new external_value(PARAM_INT, 'Step ID'),
             'stepindex' => new external_value(PARAM_INT, 'Step Number'),
         ]);
     }
@@ -300,24 +301,47 @@ public static function step_shown_returns() {
      */
     public static function step_structure_returns() {
         return new external_single_structure([
-            'title'             => new external_value(PARAM_RAW,
-                    'Step Title'),
-            'content'           => new external_value(PARAM_RAW,
-                    'Step Content'),
-            'element'           => new external_value(PARAM_TEXT,
-                    'Step Target'),
-            'placement'         => new external_value(PARAM_TEXT,
-                    'Step Placement'),
-            'delay'             => new external_value(PARAM_INT,
-                    'Delay before showing the step (ms)', VALUE_OPTIONAL),
-            'backdrop'          => new external_value(PARAM_BOOL,
-                    'Whether a backdrop should be used', VALUE_OPTIONAL),
-            'reflex'            => new external_value(PARAM_BOOL,
-                    'Whether to move to the next step when the target element is clicked', VALUE_OPTIONAL),
-            'orphan'            => new external_value(PARAM_BOOL,
-                    'Whether to display the step even if it could not be found', VALUE_OPTIONAL),
-            'stepid'            => new external_value(PARAM_INT,
-                    'The actual ID of the step', VALUE_OPTIONAL),
+            'title' => new external_value(
+                PARAM_RAW,
+                'Step Title'
+            ),
+            'content' => new external_value(
+                PARAM_RAW,
+                'Step Content'
+            ),
+            'element' => new external_value(
+                PARAM_TEXT,
+                'Step Target'
+            ),
+            'placement' => new external_value(
+                PARAM_TEXT,
+                'Step Placement'
+            ),
+            'delay' => new external_value(
+                PARAM_INT,
+                'Delay before showing the step (ms)',
+                VALUE_OPTIONAL
+            ),
+            'backdrop' => new external_value(
+                PARAM_BOOL,
+                'Whether a backdrop should be used',
+                VALUE_OPTIONAL
+            ),
+            'reflex' => new external_value(
+                PARAM_BOOL,
+                'Whether to move to the next step when the target element is clicked',
+                VALUE_OPTIONAL
+            ),
+            'orphan' => new external_value(
+                PARAM_BOOL,
+                'Whether to display the step even if it could not be found',
+                VALUE_OPTIONAL
+            ),
+            'stepid' => new external_value(
+                PARAM_INT,
+                'The actual ID of the step',
+                VALUE_OPTIONAL
+            ),
         ]);
     }
 }
diff --git a/admin/tool/usertours/classes/helper.php b/admin/tool/usertours/classes/helper.php
index 6c2befa697a9..8327dbd0ed44 100644
--- a/admin/tool/usertours/classes/helper.php
+++ b/admin/tool/usertours/classes/helper.php
@@ -14,29 +14,18 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Tour helper.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours;
 
 use core\output\inplace_editable;
-use tool_usertours\local\clientside_filter\clientside_filter;
-
-defined('MOODLE_INTERNAL') || die();
 
 /**
  * Tour helper.
  *
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @package    tool_usertours
  */
 class helper {
-
     /**
      * @var MOVE_UP
      */
@@ -158,10 +147,10 @@ public static function get_view_tour_link($tourid) {
      */
     public static function get_reset_tour_for_all_link($tourid) {
         return new \moodle_url('/admin/tool/usertours/configure.php', [
-                'id'        => $tourid,
-                'action'    => manager::ACTION_RESETFORALL,
-                'sesskey'   => sesskey(),
-            ]);
+            'id'        => $tourid,
+            'action'    => manager::ACTION_RESETFORALL,
+            'sesskey'   => sesskey(),
+        ]);
     }
 
     /**
@@ -204,9 +193,9 @@ public static function get_import_tour_link() {
      */
     public static function get_export_tour_link($tourid) {
         $link = new \moodle_url('/admin/tool/usertours/configure.php', [
-                'action'    => manager::ACTION_EXPORTTOUR,
-                'id'        => $tourid,
-            ]);
+            'action'    => manager::ACTION_EXPORTTOUR,
+            'id'        => $tourid,
+        ]);
 
         return $link;
     }
@@ -219,8 +208,8 @@ public static function get_export_tour_link($tourid) {
      */
     public static function get_duplicate_tour_link($tourid) {
         $link = new \moodle_url('/admin/tool/usertours/configure.php', [
-                'action'    => manager::ACTION_DUPLICATETOUR,
-                'id'        => $tourid,
+            'action'    => manager::ACTION_DUPLICATETOUR,
+            'id'        => $tourid,
         ]);
 
         return $link;
@@ -234,10 +223,10 @@ public static function get_duplicate_tour_link($tourid) {
      */
     public static function get_delete_tour_link($tourid) {
         return new \moodle_url('/admin/tool/usertours/configure.php', [
-                'id'        => $tourid,
-                'action'    => manager::ACTION_DELETETOUR,
-                'sesskey'   => sesskey(),
-            ]);
+            'id'        => $tourid,
+            'action'    => manager::ACTION_DELETETOUR,
+            'sesskey'   => sesskey(),
+        ]);
     }
 
     /**
@@ -262,18 +251,17 @@ public static function get_list_tour_link() {
      * @param   array       $options        Display options.
      * @return  string
      */
-    public static function format_icon_link($url, $icon, $alt, $iconcomponent = 'moodle', $options = array()) {
+    public static function format_icon_link($url, $icon, $alt, $iconcomponent = 'moodle', $options = []) {
         global $OUTPUT;
 
         return $OUTPUT->action_icon(
-                $url,
-                new \pix_icon($icon, $alt, $iconcomponent, [
-                        'title' => $alt,
-                    ]),
-                null,
-                $options
-                );
-
+            $url,
+            new \pix_icon($icon, $alt, $iconcomponent, [
+                'title' => $alt,
+            ]),
+            null,
+            $options
+        );
     }
 
     /**
@@ -282,7 +270,7 @@ public static function format_icon_link($url, $icon, $alt, $iconcomponent = 'moo
      * @param   array       $options        Display options.
      * @return  string
      */
-    public static function get_filler_icon($options = array()) {
+    public static function get_filler_icon($options = []) {
         global $OUTPUT;
 
         return \html_writer::span(
@@ -299,10 +287,10 @@ public static function get_filler_icon($options = array()) {
      */
     public static function get_delete_step_link($stepid) {
         return new \moodle_url('/admin/tool/usertours/configure.php', [
-                'action'    => manager::ACTION_DELETESTEP,
-                'id'        => $stepid,
-                'sesskey'   => sesskey(),
-            ]);
+            'action'    => manager::ACTION_DELETESTEP,
+            'id'        => $stepid,
+            'sesskey'   => sesskey(),
+        ]);
     }
 
     /**
@@ -314,16 +302,16 @@ public static function get_delete_step_link($stepid) {
     public static function render_tourname_inplace_editable(tour $tour): inplace_editable {
         $name = format_text(static::get_string_from_input($tour->get_name()), FORMAT_HTML);
         return new inplace_editable(
-                'tool_usertours',
-                'tourname',
-                $tour->get_id(),
-                true,
-                \html_writer::link(
-                    $tour->get_view_link(),
-                    $name
-                ),
-                $tour->get_name()
-            );
+            'tool_usertours',
+            'tourname',
+            $tour->get_id(),
+            true,
+            \html_writer::link(
+                $tour->get_view_link(),
+                $name
+            ),
+            $tour->get_name()
+        );
     }
 
     /**
@@ -335,13 +323,13 @@ public static function render_tourname_inplace_editable(tour $tour): inplace_edi
     public static function render_tourdescription_inplace_editable(tour $tour): inplace_editable {
         $description = format_text(static::get_string_from_input($tour->get_description()), FORMAT_HTML);
         return new inplace_editable(
-                'tool_usertours',
-                'tourdescription',
-                $tour->get_id(),
-                true,
-                $description,
-                $tour->get_description()
-            );
+            'tool_usertours',
+            'tourdescription',
+            $tour->get_id(),
+            true,
+            $description,
+            $tour->get_description()
+        );
     }
 
     /**
@@ -364,15 +352,15 @@ public static function render_tourenabled_inplace_editable(tour $tour): inplace_
         }
 
         $editable = new inplace_editable(
-                'tool_usertours',
-                'tourenabled',
-                $tour->get_id(),
-                true,
-                $OUTPUT->pix_icon($icon, $alt, 'moodle', [
-                        'title' => $alt,
-                    ]),
-                $value
-            );
+            'tool_usertours',
+            'tourenabled',
+            $tour->get_id(),
+            true,
+            $OUTPUT->pix_icon($icon, $alt, 'moodle', [
+                'title' => $alt,
+            ]),
+            $value
+        );
 
         $editable->set_type_toggle();
         return $editable;
@@ -388,16 +376,16 @@ public static function render_stepname_inplace_editable(step $step): inplace_edi
         $title = format_text(static::get_string_from_input($step->get_title()), FORMAT_HTML);
 
         return new inplace_editable(
-                'tool_usertours',
-                'stepname',
-                $step->get_id(),
-                true,
-                \html_writer::link(
-                    $step->get_edit_link(),
-                    $title
-                ),
-                $step->get_title()
-            );
+            'tool_usertours',
+            'stepname',
+            $step->get_id(),
+            true,
+            \html_writer::link(
+                $step->get_edit_link(),
+                $title
+            ),
+            $step->get_title()
+        );
     }
 
     /**
@@ -408,7 +396,7 @@ public static function render_stepname_inplace_editable(step $step): inplace_edi
     public static function get_tours() {
         global $DB;
 
-        $tours = $DB->get_records('tool_usertours_tours', array(), 'sortorder ASC');
+        $tours = $DB->get_records('tool_usertours_tours', [], 'sortorder ASC');
         $return = [];
         foreach ($tours as $tour) {
             $return[$tour->id] = tour::load_from_record($tour);
@@ -435,7 +423,7 @@ public static function get_tour($tourid) {
     public static function get_tour_from_sortorder($sortorder) {
         global $DB;
 
-        $tour = $DB->get_record('tool_usertours_tours', array('sortorder' => $sortorder));
+        $tour = $DB->get_record('tool_usertours_tours', ['sortorder' => $sortorder]);
         return tour::load_from_record($tour);
     }
 
@@ -460,7 +448,7 @@ public static function reset_tour_sortorder() {
         $index = 0;
         foreach ($tours as $tour) {
             if ($tour->sortorder != $index) {
-                $DB->set_field('tool_usertours_tours', 'sortorder', $index, array('id' => $tour->id));
+                $DB->set_field('tool_usertours_tours', 'sortorder', $index, ['id' => $tour->id]);
             }
             $index++;
         }
@@ -508,7 +496,7 @@ public static function get_step($stepid) {
     public static function get_step_from_sortorder($tourid, $sortorder) {
         global $DB;
 
-        $step = $DB->get_record('tool_usertours_steps', array('tourid' => $tourid, 'sortorder' => $sortorder));
+        $step = $DB->get_record('tool_usertours_steps', ['tourid' => $tourid, 'sortorder' => $sortorder]);
         return step::load_from_record($step);
     }
 
@@ -538,11 +526,11 @@ public static function bootstrap() {
         if ($tours) {
             $filters = static::get_all_clientside_filters();
 
-            $tourdetails = array_map(function($tour) use ($filters) {
+            $tourdetails = array_map(function ($tour) use ($filters) {
                 return [
-                        'tourId' => $tour->get_id(),
-                        'startTour' => $tour->should_show_for_user(),
-                        'filtervalues' => $tour->get_client_filter_values($filters),
+                    'tourId' => $tour->get_id(),
+                    'startTour' => $tour->should_show_for_user(),
+                    'filtervalues' => $tour->get_client_filter_values($filters),
                 ];
             }, $tours);
 
@@ -552,8 +540,8 @@ public static function bootstrap() {
             }
 
             $PAGE->requires->js_call_amd('tool_usertours/usertours', 'init', [
-                    $tourdetails,
-                    $filternames,
+                $tourdetails,
+                $filternames,
             ]);
         }
     }
@@ -567,7 +555,7 @@ public static function get_all_filters() {
         $filters = \core_component::get_component_classes_in_namespace('tool_usertours', 'local\filter');
         $filters = array_keys($filters);
 
-        $filters = array_filter($filters, function($filterclass) {
+        $filters = array_filter($filters, function ($filterclass) {
             $rc = new \ReflectionClass($filterclass);
             return $rc->isInstantiable();
         });
@@ -586,7 +574,7 @@ public static function get_all_clientside_filters() {
         $filters = \core_component::get_component_classes_in_namespace('tool_usertours', 'local\clientside_filter');
         $filters = array_keys($filters);
 
-        $filters = array_filter($filters, function($filterclass) {
+        $filters = array_filter($filters, function ($filterclass) {
             $rc = new \ReflectionClass($filterclass);
             return $rc->isInstantiable();
         });
diff --git a/admin/tool/usertours/classes/local/clientside_filter/clientside_filter.php b/admin/tool/usertours/classes/local/clientside_filter/clientside_filter.php
index 6fa403ac57a0..ed394f29be63 100644
--- a/admin/tool/usertours/classes/local/clientside_filter/clientside_filter.php
+++ b/admin/tool/usertours/classes/local/clientside_filter/clientside_filter.php
@@ -14,18 +14,8 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Clientside filter base.
- *
- * @package    tool_usertours
- * @copyright  2020 The Open University
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours\local\clientside_filter;
 
-defined('MOODLE_INTERNAL') || die();
-
 use stdClass;
 use tool_usertours\local\filter\base;
 use tool_usertours\tour;
@@ -33,6 +23,7 @@
 /**
  * Clientside filter base.
  *
+ * @package    tool_usertours
  * @copyright  2020 The Open University
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
@@ -46,10 +37,10 @@ abstract class clientside_filter extends base {
     public static function get_client_side_values(tour $tour): stdClass {
         $data = (object) [];
 
-        if (is_a(static::class, clientside_filter::class, true)) {
+        if (is_a(static::class, self::class, true)) {
             $data->filterdata = $tour->get_filter_values(static::get_filter_name());
         }
 
         return $data;
     }
-}
\ No newline at end of file
+}
diff --git a/admin/tool/usertours/classes/local/clientside_filter/cssselector.php b/admin/tool/usertours/classes/local/clientside_filter/cssselector.php
index e6d6c2d778eb..ef30c5895928 100644
--- a/admin/tool/usertours/classes/local/clientside_filter/cssselector.php
+++ b/admin/tool/usertours/classes/local/clientside_filter/cssselector.php
@@ -14,13 +14,6 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Selector filter.
- *
- * @package    tool_usertours
- * @copyright  2020 The Open University
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
 namespace tool_usertours\local\clientside_filter;
 
 use stdClass;
@@ -29,6 +22,7 @@
 /**
  * Course filter.
  *
+ * @package    tool_usertours
  * @copyright  2020 The Open University
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
@@ -107,7 +101,7 @@ public static function get_client_side_values(tour $tour): stdClass {
 
         // Filter values might not exist for tours that were created before this filter existed.
         if (!$filtervalues) {
-            return new stdClass;
+            return new stdClass();
         }
 
         return (object) $filtervalues;
diff --git a/admin/tool/usertours/classes/local/filter/accessdate.php b/admin/tool/usertours/classes/local/filter/accessdate.php
index 26fecd4b8c7e..7ca30008d65e 100644
--- a/admin/tool/usertours/classes/local/filter/accessdate.php
+++ b/admin/tool/usertours/classes/local/filter/accessdate.php
@@ -13,29 +13,19 @@
 //
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
-
-/**
- * Access Date filter.
- *
- * @package    tool_usertours
- * @copyright  2019 Tom Dickman <tomdickman@catalyst-au.net>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
 namespace tool_usertours\local\filter;
 
-defined('MOODLE_INTERNAL') || die();
-
 use context;
 use tool_usertours\tour;
 
 /**
  * Access date filter. Used to determine if USER should see a tour based on a particular access date.
  *
+ * @package    tool_usertours
  * @copyright  2019 Tom Dickman <tomdickman@catalyst-au.net>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 class accessdate extends base {
-
     /**
      * Access date filtering constant for setting base date as account creation date.
      */
@@ -74,12 +64,11 @@ public static function get_filter_name() {
      */
     public static function get_filter_options() {
 
-        return array(
+        return [
             self::FILTER_ACCOUNT_CREATION => get_string('filter_date_account_creation', 'tool_usertours'),
             self::FILTER_FIRST_LOGIN => get_string('filter_date_first_login', 'tool_usertours'),
             self::FILTER_LAST_LOGIN => get_string('filter_date_last_login', 'tool_usertours'),
-        );
-
+        ];
     }
 
     /**
@@ -96,8 +85,14 @@ public static function add_filter_to_form(\MoodleQuickForm &$mform) {
         $range = "{$key}_range";
         $enabled = "{$key}_enabled";
 
-        $mform->addElement('advcheckbox', $enabled, get_string($key, 'tool_usertours'),
-            get_string('filter_accessdate_enabled', 'tool_usertours'), null, array(0, 1));
+        $mform->addElement(
+            'advcheckbox',
+            $enabled,
+            get_string($key, 'tool_usertours'),
+            get_string('filter_accessdate_enabled', 'tool_usertours'),
+            null,
+            [0, 1]
+        );
         $mform->addHelpButton($enabled, $enabled, 'tool_usertours');
 
         $mform->addElement('select', $key, ' ', self::get_filter_options());
@@ -110,7 +105,6 @@ public static function add_filter_to_form(\MoodleQuickForm &$mform) {
         ]);
         $mform->setDefault($range, 90 * DAYSECS);
         $mform->hideIf($range, $enabled, 'notchecked');
-
     }
 
     /**
@@ -224,4 +218,4 @@ public static function filter_matches(tour $tour, context $context) {
         }
         return $result;
     }
-}
\ No newline at end of file
+}
diff --git a/admin/tool/usertours/classes/local/filter/base.php b/admin/tool/usertours/classes/local/filter/base.php
index ff1de4442a97..fc73c58dedda 100644
--- a/admin/tool/usertours/classes/local/filter/base.php
+++ b/admin/tool/usertours/classes/local/filter/base.php
@@ -14,24 +14,15 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Filter base.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours\local\filter;
 
-defined('MOODLE_INTERNAL') || die();
-
 use tool_usertours\tour;
 use context;
 
 /**
  * Filter base.
  *
+ * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
diff --git a/admin/tool/usertours/classes/local/filter/category.php b/admin/tool/usertours/classes/local/filter/category.php
index 0b1f119853d9..fd5566d998c0 100644
--- a/admin/tool/usertours/classes/local/filter/category.php
+++ b/admin/tool/usertours/classes/local/filter/category.php
@@ -14,24 +14,15 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Category filter.
- *
- * @package    tool_usertours
- * @copyright  2017 The Open University
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours\local\filter;
 
-defined('MOODLE_INTERNAL') || die();
-
 use tool_usertours\tour;
 use context;
 
 /**
  * Category filter.
  *
+ * @package    tool_usertours
  * @copyright  2017 The Open University
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
diff --git a/admin/tool/usertours/classes/local/filter/course.php b/admin/tool/usertours/classes/local/filter/course.php
index 32fb21ddb5da..a440bc0598c7 100644
--- a/admin/tool/usertours/classes/local/filter/course.php
+++ b/admin/tool/usertours/classes/local/filter/course.php
@@ -14,24 +14,15 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Course filter.
- *
- * @package    tool_usertours
- * @copyright  2017 The Open University
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours\local\filter;
 
-defined('MOODLE_INTERNAL') || die();
-
 use tool_usertours\tour;
 use context;
 
 /**
  * Course filter.
  *
+ * @package    tool_usertours
  * @copyright  2017 The Open University
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
diff --git a/admin/tool/usertours/classes/local/filter/courseformat.php b/admin/tool/usertours/classes/local/filter/courseformat.php
index 95e2b7c86132..de2ca1435237 100644
--- a/admin/tool/usertours/classes/local/filter/courseformat.php
+++ b/admin/tool/usertours/classes/local/filter/courseformat.php
@@ -14,24 +14,15 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Course format filter.
- *
- * @package    tool_usertours
- * @copyright  2017 The Open University
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours\local\filter;
 
-defined('MOODLE_INTERNAL') || die();
-
 use tool_usertours\tour;
 use context;
 
 /**
  * Course format filter.
  *
+ * @package    tool_usertours
  * @copyright  2017 The Open University
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
diff --git a/admin/tool/usertours/classes/local/filter/role.php b/admin/tool/usertours/classes/local/filter/role.php
index a64ee83585c2..e3c67ebe5a23 100644
--- a/admin/tool/usertours/classes/local/filter/role.php
+++ b/admin/tool/usertours/classes/local/filter/role.php
@@ -14,24 +14,15 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Theme filter.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours\local\filter;
 
-defined('MOODLE_INTERNAL') || die();
-
 use tool_usertours\tour;
 use context;
 
 /**
  * Theme filter.
  *
+ * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
@@ -106,7 +97,7 @@ public static function filter_matches(tour $tour, context $context) {
         }
 
         // Use a request cache to save on DB queries.
-        // We may be checking multiple tours and they'll all be for the same userid, and contextid
+        // We may be checking multiple tours and they'll all be for the same userid, and contextid.
         $cache = \cache::make_from_params(\cache_store::MODE_REQUEST, 'tool_usertours', 'filter_role');
 
         // Get all of the roles used in this context, including special roles such as user, and frontpageuser.
diff --git a/admin/tool/usertours/classes/local/filter/theme.php b/admin/tool/usertours/classes/local/filter/theme.php
index 786684c9c13f..e041d172cc37 100644
--- a/admin/tool/usertours/classes/local/filter/theme.php
+++ b/admin/tool/usertours/classes/local/filter/theme.php
@@ -14,24 +14,15 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Theme filter.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours\local\filter;
 
-defined('MOODLE_INTERNAL') || die();
-
 use tool_usertours\tour;
 use context;
 
 /**
  * Theme filter.
  *
+ * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
diff --git a/admin/tool/usertours/classes/local/forms/editstep.php b/admin/tool/usertours/classes/local/forms/editstep.php
index b9418e75e225..8c586101f33a 100644
--- a/admin/tool/usertours/classes/local/forms/editstep.php
+++ b/admin/tool/usertours/classes/local/forms/editstep.php
@@ -98,7 +98,7 @@ public function definition() {
         // Content type.
         $typeoptions = [
             static::CONTENTTYPE_LANGSTRING => get_string('content_type_langstring', 'tool_usertours'),
-            static::CONTENTTYPE_MANUAL => get_string('content_type_manual', 'tool_usertours')
+            static::CONTENTTYPE_MANUAL => get_string('content_type_manual', 'tool_usertours'),
         ];
         $mform->addElement('select', 'contenttype', get_string('content_type', 'tool_usertours'), $typeoptions);
         $mform->addHelpButton('contenttype', 'content_type', 'tool_usertours');
@@ -114,7 +114,7 @@ public function definition() {
             'maxbytes' => $CFG->maxbytes,
             'maxfiles' => EDITOR_UNLIMITED_FILES,
             'changeformat' => 1,
-            'trusttext' => true
+            'trusttext' => true,
         ];
         $objs = $mform->createElement('editor', 'content', get_string('content', 'tool_usertours'), null, $editoroptions);
         // TODO: MDL-68540 We need to add the editor to a group element because editor element will not work with hideIf.
diff --git a/admin/tool/usertours/classes/local/forms/edittour.php b/admin/tool/usertours/classes/local/forms/edittour.php
index 80409b1aa783..cf6f50402cd9 100644
--- a/admin/tool/usertours/classes/local/forms/edittour.php
+++ b/admin/tool/usertours/classes/local/forms/edittour.php
@@ -28,7 +28,8 @@
 
 require_once($CFG->libdir . '/formslib.php');
 
-use \tool_usertours\helper;
+use tool_usertours\helper;
+use tool_usertours\tour;
 
 /**
  * Form for editing tours.
@@ -88,6 +89,17 @@ public function definition() {
         $mform->addElement('checkbox', 'displaystepnumbers', get_string('displaystepnumbers', 'tool_usertours'));
         $mform->addHelpButton('displaystepnumbers', 'displaystepnumbers', 'tool_usertours');
 
+        $mform->addElement(
+            'select',
+            'showtourwhen',
+            get_string('showtourwhen', 'tool_usertours'),
+            [
+                tour::SHOW_TOUR_UNTIL_COMPLETE => get_string('showtouruntilcomplete', 'tool_usertours'),
+                tour::SHOW_TOUR_ON_EACH_PAGE_VISIT => get_string('showtoureachtime', 'tool_usertours'),
+            ]
+        );
+        $mform->setDefault('showtourwhen', tour::SHOW_TOUR_UNTIL_COMPLETE);
+
         // Configuration.
         $this->tour->add_config_to_form($mform);
 
diff --git a/admin/tool/usertours/classes/local/table/step_list.php b/admin/tool/usertours/classes/local/table/step_list.php
index c774c6e63f6f..87937d7b0e11 100644
--- a/admin/tool/usertours/classes/local/table/step_list.php
+++ b/admin/tool/usertours/classes/local/table/step_list.php
@@ -39,7 +39,6 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 class step_list extends \flexible_table {
-
     /**
      * @var     int     $tourid     The id of the tour.
      */
@@ -54,25 +53,25 @@ public function __construct($tourid) {
         parent::__construct('steps');
         $this->tourid = $tourid;
 
-        $baseurl = new \moodle_url('/tool/usertours/configure.php', array(
+        $baseurl = new \moodle_url('/tool/usertours/configure.php', [
                 'id' => $tourid,
-            ));
+            ]);
         $this->define_baseurl($baseurl);
 
         // Column definition.
-        $this->define_columns(array(
+        $this->define_columns([
             'title',
             'content',
             'target',
             'actions',
-        ));
+        ]);
 
-        $this->define_headers(array(
-            get_string('title',   'tool_usertours'),
+        $this->define_headers([
+            get_string('title', 'tool_usertours'),
             get_string('content', 'tool_usertours'),
-            get_string('target',  'tool_usertours'),
+            get_string('target', 'tool_usertours'),
             get_string('actions', 'tool_usertours'),
-        ));
+        ]);
 
         $this->set_attribute('class', 'admintable generaltable steptable');
         $this->setup();
@@ -98,8 +97,14 @@ protected function col_title(step $step) {
     protected function col_content(step $step) {
         $content = $step->get_content();
         $systemcontext = \context_system::instance();
-        $content = file_rewrite_pluginfile_urls($content, 'pluginfile.php', $systemcontext->id,
-            'tool_usertours', 'stepcontent', $step->get_id());
+        $content = file_rewrite_pluginfile_urls(
+            $content,
+            'pluginfile.php',
+            $systemcontext->id,
+            'tool_usertours',
+            'stepcontent',
+            $step->get_id()
+        );
 
         $content = helper::get_string_from_input($content);
         $content = step::get_step_image_from_input($content);
@@ -135,8 +140,11 @@ protected function col_actions(step $step) {
         if ($step->is_last_step()) {
             $actions[] = helper::get_filler_icon();
         } else {
-            $actions[] = helper::format_icon_link($step->get_movedown_link(), 't/down',
-                    get_string('movestepdown', 'tool_usertours'));
+            $actions[] = helper::format_icon_link(
+                $step->get_movedown_link(),
+                't/down',
+                get_string('movestepdown', 'tool_usertours')
+            );
         }
 
         $actions[] = helper::format_icon_link($step->get_edit_link(), 't/edit', get_string('edit'));
diff --git a/admin/tool/usertours/classes/local/table/tour_list.php b/admin/tool/usertours/classes/local/table/tour_list.php
index 0ea20a13dbc4..dd5298cd8d1c 100644
--- a/admin/tool/usertours/classes/local/table/tour_list.php
+++ b/admin/tool/usertours/classes/local/table/tour_list.php
@@ -38,7 +38,6 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 class tour_list extends \flexible_table {
-
     /** @var int The count of all tours. */
     protected int $tourcount = 0;
 
@@ -52,21 +51,21 @@ public function __construct() {
         $this->define_baseurl($baseurl);
 
         // Column definition.
-        $this->define_columns(array(
+        $this->define_columns([
             'name',
             'description',
             'appliesto',
             'enabled',
             'actions',
-        ));
+        ]);
 
-        $this->define_headers(array(
+        $this->define_headers([
             get_string('name', 'tool_usertours'),
             get_string('description', 'tool_usertours'),
             get_string('appliesto', 'tool_usertours'),
             get_string('enabled', 'tool_usertours'),
             get_string('actions', 'tool_usertours'),
-        ));
+        ]);
 
         $this->set_attribute('class', 'admintable generaltable');
         $this->setup();
@@ -129,22 +128,32 @@ protected function col_actions(tour $tour) {
         if ($tour->is_first_tour()) {
             $actions[] = helper::get_filler_icon();
         } else {
-            $actions[] = helper::format_icon_link($tour->get_moveup_link(), 't/up',
-                    get_string('movetourup', 'tool_usertours'));
+            $actions[] = helper::format_icon_link(
+                $tour->get_moveup_link(),
+                't/up',
+                get_string('movetourup', 'tool_usertours')
+            );
         }
 
         if ($tour->is_last_tour($this->tourcount)) {
             $actions[] = helper::get_filler_icon();
         } else {
-            $actions[] = helper::format_icon_link($tour->get_movedown_link(), 't/down',
-                    get_string('movetourdown', 'tool_usertours'));
+            $actions[] = helper::format_icon_link(
+                $tour->get_movedown_link(),
+                't/down',
+                get_string('movetourdown', 'tool_usertours')
+            );
         }
 
         $actions[] = helper::format_icon_link($tour->get_view_link(), 't/viewdetails', get_string('view'));
         $actions[] = helper::format_icon_link($tour->get_edit_link(), 't/edit', get_string('edit'));
         $actions[] = helper::format_icon_link($tour->get_duplicate_link(), 't/copy', get_string('duplicate'));
-        $actions[] = helper::format_icon_link($tour->get_export_link(), 't/export',
-                get_string('exporttour', 'tool_usertours'), 'tool_usertours');
+        $actions[] = helper::format_icon_link(
+            $tour->get_export_link(),
+            't/export',
+            get_string('exporttour', 'tool_usertours'),
+            'tool_usertours'
+        );
         $actions[] = helper::format_icon_link($tour->get_delete_link(), 't/delete', get_string('delete'), null, [
                 'data-action'   => 'delete',
                 'data-id'       => $tour->get_id(),
diff --git a/admin/tool/usertours/classes/local/target/base.php b/admin/tool/usertours/classes/local/target/base.php
index 663e5bf03b68..e3b829bfb049 100644
--- a/admin/tool/usertours/classes/local/target/base.php
+++ b/admin/tool/usertours/classes/local/target/base.php
@@ -14,23 +14,14 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Target base.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours\local\target;
 
-defined('MOODLE_INTERNAL') || die();
-
 use tool_usertours\step;
 
 /**
  * Target base.
  *
+ * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
diff --git a/admin/tool/usertours/classes/local/target/block.php b/admin/tool/usertours/classes/local/target/block.php
index 095e9018c4c9..06071c7d5cb9 100644
--- a/admin/tool/usertours/classes/local/target/block.php
+++ b/admin/tool/usertours/classes/local/target/block.php
@@ -14,28 +14,16 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Block target.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours\local\target;
 
-defined('MOODLE_INTERNAL') || die();
-
-use tool_usertours\step;
-
 /**
  * Block target.
  *
+ * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 class block extends base {
-
     /**
      * Convert the target value to a valid CSS selector for use in the
      * output configuration.
@@ -101,8 +89,12 @@ public static function add_config_to_form(\MoodleQuickForm $mform) {
      * @param   MoodleQuickForm $mform      The form to add configuration to.
      */
     public static function add_disabled_constraints_to_form(\MoodleQuickForm $mform) {
-        $mform->hideIf('targetvalue_block', 'targettype', 'noteq',
-                \tool_usertours\target::get_target_constant_for_class(self::class));
+        $mform->hideIf(
+            'targetvalue_block',
+            'targettype',
+            'noteq',
+            \tool_usertours\target::get_target_constant_for_class(self::class)
+        );
     }
 
     /**
diff --git a/admin/tool/usertours/classes/local/target/selector.php b/admin/tool/usertours/classes/local/target/selector.php
index b0cc92682f03..16057c0e04c7 100644
--- a/admin/tool/usertours/classes/local/target/selector.php
+++ b/admin/tool/usertours/classes/local/target/selector.php
@@ -14,28 +14,16 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Selector target.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours\local\target;
 
-defined('MOODLE_INTERNAL') || die();
-
-use tool_usertours\step;
-
 /**
  * Selector target.
  *
+ * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 class selector extends base {
-
     /**
      * Convert the target value to a valid CSS selector for use in the
      * output configuration.
@@ -91,8 +79,12 @@ public static function add_config_to_form(\MoodleQuickForm $mform) {
      * @param   MoodleQuickForm $mform      The form to add configuration to.
      */
     public static function add_disabled_constraints_to_form(\MoodleQuickForm $mform) {
-        $mform->hideIf('targetvalue_selector', 'targettype', 'noteq',
-                \tool_usertours\target::get_target_constant_for_class(self::class));
+        $mform->hideIf(
+            'targetvalue_selector',
+            'targettype',
+            'noteq',
+            \tool_usertours\target::get_target_constant_for_class(self::class)
+        );
     }
 
     /**
diff --git a/admin/tool/usertours/classes/local/target/unattached.php b/admin/tool/usertours/classes/local/target/unattached.php
index 316fdea4b853..0c5303687100 100644
--- a/admin/tool/usertours/classes/local/target/unattached.php
+++ b/admin/tool/usertours/classes/local/target/unattached.php
@@ -14,23 +14,12 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * A step designed to be orphaned.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours\local\target;
 
-defined('MOODLE_INTERNAL') || die();
-
-use tool_usertours\step;
-
 /**
  * A step designed to be orphaned.
  *
+ * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
diff --git a/admin/tool/usertours/classes/manager.php b/admin/tool/usertours/classes/manager.php
index ab207e6ce5c8..cd9c22ebfeed 100644
--- a/admin/tool/usertours/classes/manager.php
+++ b/admin/tool/usertours/classes/manager.php
@@ -14,18 +14,8 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Tour manager.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours;
 
-defined('MOODLE_INTERNAL') || die();
-
 use tool_usertours\local\forms;
 use tool_usertours\local\table;
 use core\notification;
@@ -33,11 +23,11 @@
 /**
  * Tour manager.
  *
+ * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 class manager {
-
     /**
      * @var ACTION_LISTTOURS      The action to get the list of tours.
      */
@@ -163,7 +153,7 @@ public function execute($action) {
         $PAGE->set_primary_active_tab('siteadminnode');
 
         // Add the main content.
-        switch($action) {
+        switch ($action) {
             case self::ACTION_NEWTOUR:
             case self::ACTION_EDITTOUR:
                 $this->edit_tour(optional_param('id', null, PARAM_INT));
@@ -356,7 +346,6 @@ protected function edit_tour($id = null) {
         if ($id) {
             $tour = tour::instance($id);
             $PAGE->navbar->add(helper::get_string_from_input($tour->get_name()), $tour->get_edit_link());
-
         } else {
             $tour = new tour();
             $PAGE->navbar->add(get_string('newtour', 'tool_usertours'), $tour->get_edit_link());
@@ -374,6 +363,7 @@ protected function edit_tour($id = null) {
             $tour->set_enabled(!empty($data->enabled));
             $tour->set_endtourlabel($data->endtourlabel);
             $tour->set_display_step_numbers(!empty($data->displaystepnumbers));
+            $tour->set_showtourwhen($data->showtourwhen);
 
             foreach (configuration::get_defaultable_keys() as $key) {
                 $tour->set_config($key, $data->$key);
@@ -403,6 +393,7 @@ protected function edit_tour($id = null) {
                 foreach (helper::get_all_filters() as $filterclass) {
                     $filterclass::prepare_filter_values_for_form($tour, $data);
                 }
+
                 $form->set_data($data);
             }
 
@@ -568,7 +559,7 @@ protected function show_hide_tour($tourid, $visibility) {
 
         require_sesskey();
 
-        $tour = $DB->get_record('tool_usertours_tours', array('id' => $tourid));
+        $tour = $DB->get_record('tool_usertours_tours', ['id' => $tourid]);
         $tour->enabled = $visibility;
         $DB->update_record('tool_usertours_tours', $tour);
 
@@ -784,9 +775,10 @@ protected function move_tour($id) {
      */
     protected static function _move_tour(tour $tour, $direction) {
         // We can't move the first tour higher, nor the last tour any lower.
-        if (($tour->is_first_tour() && $direction == helper::MOVE_UP) ||
-                ($tour->is_last_tour() && $direction == helper::MOVE_DOWN)) {
-
+        if (
+            ($tour->is_first_tour() && $direction == helper::MOVE_UP) ||
+                ($tour->is_last_tour() && $direction == helper::MOVE_DOWN)
+        ) {
             return;
         }
 
diff --git a/admin/tool/usertours/classes/output/renderer.php b/admin/tool/usertours/classes/output/renderer.php
index 27c1ae37901c..6c9ed28f8ba4 100644
--- a/admin/tool/usertours/classes/output/renderer.php
+++ b/admin/tool/usertours/classes/output/renderer.php
@@ -14,21 +14,12 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Renderer.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours\output;
 
-defined('MOODLE_INTERNAL') || die();
-
 /**
  * Renderer.
  *
+ * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
diff --git a/admin/tool/usertours/classes/output/step.php b/admin/tool/usertours/classes/output/step.php
index a3f5f81a0240..a85a0a5664ab 100644
--- a/admin/tool/usertours/classes/output/step.php
+++ b/admin/tool/usertours/classes/output/step.php
@@ -38,7 +38,6 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 class step implements \renderable {
-
     /**
      * @var The step instance.
      */
@@ -65,8 +64,14 @@ public function export_for_template(\renderer_base $output) {
 
         $content = $step->get_content();
         $systemcontext = \context_system::instance();
-        $content = file_rewrite_pluginfile_urls($content, 'pluginfile.php', $systemcontext->id,
-            'tool_usertours', 'stepcontent', $step->get_id());
+        $content = file_rewrite_pluginfile_urls(
+            $content,
+            'pluginfile.php',
+            $systemcontext->id,
+            'tool_usertours',
+            'stepcontent',
+            $step->get_id()
+        );
 
         $content = helper::get_string_from_input($content);
         $content = $step::get_step_image_from_input($content);
@@ -74,17 +79,17 @@ public function export_for_template(\renderer_base $output) {
         $result = (object) [
             'stepid'    => $step->get_id(),
             'title'     => \core_external\util::format_text(
-                    helper::get_string_from_input($step->get_title()),
-                    FORMAT_HTML,
-                    $PAGE->context->id,
-                    'tool_usertours'
-                )[0],
+                helper::get_string_from_input($step->get_title()),
+                FORMAT_HTML,
+                $PAGE->context->id,
+                'tool_usertours'
+            )[0],
             'content'   => \core_external\util::format_text(
-                    $content,
-                    $step->get_contentformat(),
-                    $PAGE->context->id,
-                    'tool_usertours'
-                )[0],
+                $content,
+                $step->get_contentformat(),
+                $PAGE->context->id,
+                'tool_usertours'
+            )[0],
             'element'   => $step->get_target()->convert_to_css(),
         ];
 
diff --git a/admin/tool/usertours/classes/output/tour.php b/admin/tool/usertours/classes/output/tour.php
index 6e933fb7cc43..d232e44d1636 100644
--- a/admin/tool/usertours/classes/output/tour.php
+++ b/admin/tool/usertours/classes/output/tour.php
@@ -14,28 +14,18 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Tour renderable.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours\output;
 
-defined('MOODLE_INTERNAL') || die();
-
 use tool_usertours\tour as toursource;
 
 /**
  * Tour renderable.
  *
+ * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 class tour implements \renderable {
-
     /**
      * @var The tour instance.
      */
diff --git a/admin/tool/usertours/classes/privacy/provider.php b/admin/tool/usertours/classes/privacy/provider.php
index db71ee9a1a98..c65b204860fa 100644
--- a/admin/tool/usertours/classes/privacy/provider.php
+++ b/admin/tool/usertours/classes/privacy/provider.php
@@ -14,25 +14,16 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Privacy Subsystem implementation for tool_usertours.
- *
- * @package    tool_usertours
- * @copyright  2018 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours\privacy;
 
-use \core_privacy\local\request\writer;
-use \core_privacy\local\metadata\collection;
-use \core_privacy\local\request\transform;
-
-defined('MOODLE_INTERNAL') || die();
+use core_privacy\local\request\writer;
+use core_privacy\local\metadata\collection;
+use core_privacy\local\request\transform;
 
 /**
  * Implementation of the privacy subsystem plugin provider for the user tours feature.
  *
+ * @package    tool_usertours
  * @copyright  2018 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
@@ -41,9 +32,7 @@ class provider implements
     \core_privacy\local\metadata\provider,
 
     // This plugin has some sitewide user preferences to export.
-    \core_privacy\local\request\user_preference_provider
-{
-
+    \core_privacy\local\request\user_preference_provider {
     /**
      * Returns meta data about this system.
      *
diff --git a/admin/tool/usertours/classes/step.php b/admin/tool/usertours/classes/step.php
index 95715e177adf..485bc081536e 100644
--- a/admin/tool/usertours/classes/step.php
+++ b/admin/tool/usertours/classes/step.php
@@ -14,29 +14,19 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Step class.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours;
 
 use context_system;
 use stdClass;
 
-defined('MOODLE_INTERNAL') || die();
-
 /**
  * Step class.
  *
+ * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 class step {
-
     /**
      * @var     int     $id         The id of the step.
      */
@@ -137,7 +127,7 @@ protected function fetch($id) {
         global $DB;
 
         return $this->reload_from_record(
-            $DB->get_record('tool_usertours_steps', array('id' => $id))
+            $DB->get_record('tool_usertours_steps', ['id' => $id])
         );
     }
 
@@ -414,7 +404,7 @@ public function get_movedown_link() {
      */
     public function get_config($key = null, $default = null) {
         if ($this->config === null) {
-            $this->config = (object) array();
+            $this->config = (object) [];
         }
 
         if ($key === null) {
@@ -448,7 +438,7 @@ public function get_config($key = null, $default = null) {
      */
     public function set_config($key, $value) {
         if ($this->config === null) {
-            $this->config = (object) array();
+            $this->config = (object) [];
         }
 
         if ($value === null) {
@@ -497,7 +487,7 @@ protected function embed_files(): array {
                 'name' => $file->get_filename(),
                 'path' => $file->get_filepath(),
                 'content' => base64_encode($file->get_content()),
-                'encode' => 'base64'
+                'encode' => 'base64',
             ];
         }
 
@@ -635,7 +625,7 @@ public function remove() {
             return;
         }
 
-        $DB->delete_records('tool_usertours_steps', array('id' => $this->id));
+        $DB->delete_records('tool_usertours_steps', ['id' => $this->id]);
         $this->get_tour()->reset_step_sortorder();
 
         // Notify of a change to the step configuration.
@@ -817,15 +807,19 @@ public static function get_step_image_from_input(string $content): string {
             return $content;
         }
 
-        $content = preg_replace_callback('%@@PIXICON::(?P<identifier>([^::]*))::(?P<component>([^@@]*))@@%',
-            function(array $matches) {
+        $content = preg_replace_callback(
+            '%@@PIXICON::(?P<identifier>([^::]*))::(?P<component>([^@@]*))@@%',
+            function (array $matches) {
                 global $OUTPUT;
                 $component = $matches['component'];
                 if ($component == 'moodle') {
                     $component = 'core';
                 }
-                return \html_writer::img($OUTPUT->image_url($matches['identifier'], $component)->out(false), '',
-                    ['class' => 'img-fluid']);
+                return \html_writer::img(
+                    $OUTPUT->image_url($matches['identifier'], $component)->out(false),
+                    '',
+                    ['class' => 'img-fluid']
+                );
             },
             $content
         );
diff --git a/admin/tool/usertours/classes/target.php b/admin/tool/usertours/classes/target.php
index f65c2caa0e29..9299ca5180cd 100644
--- a/admin/tool/usertours/classes/target.php
+++ b/admin/tool/usertours/classes/target.php
@@ -14,26 +14,16 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Target class.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours;
 
-defined('MOODLE_INTERNAL') || die();
-
 /**
  * Target class.
  *
+ * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 class target {
-
     /**
      * @var TARGET_SELECTOR The target is a CSS selector.
      */
diff --git a/admin/tool/usertours/classes/tour.php b/admin/tool/usertours/classes/tour.php
index c51f9e85f0de..61001c5745d1 100644
--- a/admin/tool/usertours/classes/tour.php
+++ b/admin/tool/usertours/classes/tour.php
@@ -14,28 +14,16 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Tour class.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours;
 
-use tool_usertours\local\clientside_filter\clientside_filter;
-
-defined('MOODLE_INTERNAL') || die();
-
 /**
  * Tour class.
  *
+ * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 class tour {
-
     /**
      * The tour is currently disabled
      *
@@ -64,6 +52,12 @@ class tour {
      */
     const TOUR_REQUESTED_BY_USER        = 'tool_usertours_tour_reset_time_';
 
+    /** @var int Whether to show the tour only until it has been marked complete */
+    const SHOW_TOUR_UNTIL_COMPLETE = 1;
+
+    /** @var int Whether to show the tour every time a page matches */
+    const SHOW_TOUR_ON_EACH_PAGE_VISIT = 2;
+
     /**
      * @var $id The tour ID.
      */
@@ -157,7 +151,7 @@ protected function fetch($id) {
         global $DB;
 
         return $this->reload_from_record(
-            $DB->get_record('tool_usertours_tours', array('id' => $id), '*', MUST_EXIST)
+            $DB->get_record('tool_usertours_tours', ['id' => $id], '*', MUST_EXIST)
         );
     }
 
@@ -424,7 +418,7 @@ public function get_delete_link() {
      * @return  object
      */
     public function to_record() {
-        return (object) array(
+        return (object) [
             'id'            => $this->id,
             'name'          => $this->name,
             'description'   => $this->description,
@@ -434,7 +428,7 @@ public function to_record() {
             'endtourlabel'  => $this->endtourlabel,
             'configdata'    => json_encode($this->config),
             'displaystepnumbers' => $this->displaystepnumbers,
-        );
+        ];
     }
 
     /**
@@ -519,7 +513,7 @@ public function get_movedown_link() {
      */
     public function get_config($key = null, $default = null) {
         if ($this->config === null) {
-            $this->config = (object) array();
+            $this->config = (object) [];
         }
         if ($key === null) {
             return $this->config;
@@ -545,7 +539,7 @@ public function get_config($key = null, $default = null) {
      */
     public function set_config($key, $value) {
         if ($this->config === null) {
-            $this->config = (object) array();
+            $this->config = (object) [];
         }
         $this->config->$key = $value;
         $this->dirty = true;
@@ -602,7 +596,7 @@ public function remove() {
         }
 
         // Remove the configuration for the tour.
-        $DB->delete_records('tool_usertours_tours', array('id' => $this->id));
+        $DB->delete_records('tool_usertours_tours', ['id' => $this->id]);
         helper::reset_tour_sortorder();
 
         $this->remove_user_preferences();
@@ -617,11 +611,11 @@ public function remove() {
      */
     public function reset_step_sortorder() {
         global $DB;
-        $steps = $DB->get_records('tool_usertours_steps', array('tourid' => $this->id), 'sortorder ASC', 'id');
+        $steps = $DB->get_records('tool_usertours_steps', ['tourid' => $this->id], 'sortorder ASC', 'id');
 
         $index = 0;
         foreach ($steps as $step) {
-            $DB->set_field('tool_usertours_steps', 'sortorder', $index, array('id' => $step->id));
+            $DB->set_field('tool_usertours_steps', 'sortorder', $index, ['id' => $step->id]);
             $index++;
         }
 
@@ -653,6 +647,11 @@ public function should_show_for_user() {
             return false;
         }
 
+        if ($this->get_showtourwhen() === self::SHOW_TOUR_ON_EACH_PAGE_VISIT) {
+            // The tour should be shown on every page visit.
+            return true;
+        }
+
         if ($tourcompletiondate = get_user_preferences(self::TOUR_LAST_COMPLETED_BY_USER . $this->get_id(), null)) {
             if ($tourresetdate = get_user_preferences(self::TOUR_REQUESTED_BY_USER . $this->get_id(), null)) {
                 if ($tourresetdate >= $tourcompletiondate) {
@@ -775,6 +774,7 @@ protected function add_config_field_to_form(\MoodleQuickForm &$mform, $key) {
      */
     public function prepare_data_for_form() {
         $data = $this->to_record();
+        $data->showtourwhen = $this->get_showtourwhen();
         foreach (configuration::get_defaultable_keys() as $key) {
             $data->$key = $this->get_config($key, configuration::get_default_value($key));
         }
@@ -872,4 +872,29 @@ public function set_display_step_numbers(bool $value): tour {
     public function get_display_step_numbers(): bool {
         return $this->displaystepnumbers;
     }
+
+    /**
+     * Set the value for the when to show the tour.
+     *
+     * @see self::SHOW_TOUR_UNTIL_COMPLETE
+     * @see self::SHOW_TOUR_ON_EACH_PAGE_VISIT
+     *
+     * @param int $value
+     * @return self
+     */
+    public function set_showtourwhen(int $value): tour {
+        return $this->set_config('showtourwhen', $value);
+    }
+
+    /**
+     * When to show the tour.
+     *
+     * @see self::SHOW_TOUR_UNTIL_COMPLETE
+     * @see self::SHOW_TOUR_ON_EACH_PAGE_VISIT
+     *
+     * @return int
+     */
+    public function get_showtourwhen(): int {
+        return $this->get_config('showtourwhen', self::SHOW_TOUR_UNTIL_COMPLETE);
+    }
 }
diff --git a/admin/tool/usertours/configure.php b/admin/tool/usertours/configure.php
index cb7bc9832182..5ff066b18e93 100644
--- a/admin/tool/usertours/configure.php
+++ b/admin/tool/usertours/configure.php
@@ -31,5 +31,5 @@
 $PAGE->set_context(context_system::instance());
 
 $pluginmanager->execute(
-        $action
-    );
+    $action
+);
diff --git a/admin/tool/usertours/db/access.php b/admin/tool/usertours/db/access.php
index 1e8e6b927c90..4dd38c2245d8 100644
--- a/admin/tool/usertours/db/access.php
+++ b/admin/tool/usertours/db/access.php
@@ -24,13 +24,13 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$capabilities = array(
+$capabilities = [
     'tool/usertours:managetours' => [
         'captype' => 'write',
         'riskbitmask' => RISK_XSS,
         'contextlevel' => CONTEXT_SYSTEM,
         'archetypes' => [
             'manager' => CAP_ALLOW,
-        ]
+        ],
     ],
-);
+];
diff --git a/admin/tool/usertours/db/caches.php b/admin/tool/usertours/db/caches.php
index 3ae3c8fb4c7d..28e384656994 100644
--- a/admin/tool/usertours/db/caches.php
+++ b/admin/tool/usertours/db/caches.php
@@ -24,19 +24,19 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$definitions = array(
-    'tourdata' => array(
+$definitions = [
+    'tourdata' => [
         'mode' => cache_store::MODE_APPLICATION,
         'simplekeys' => true,
         'simpledata' => true,
         'staticacceleration' => true,
         'staticaccelerationsize' => 1,
-    ),
-    'stepdata' => array(
+    ],
+    'stepdata' => [
         'mode' => cache_store::MODE_APPLICATION,
         'simplekeys' => true,
         'simpledata' => true,
         'staticacceleration' => true,
         'staticaccelerationsize' => 1,
-    ),
-);
+    ],
+];
diff --git a/admin/tool/usertours/db/services.php b/admin/tool/usertours/db/services.php
index 38e65eaa5a52..9b47633c5d67 100644
--- a/admin/tool/usertours/db/services.php
+++ b/admin/tool/usertours/db/services.php
@@ -24,40 +24,40 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$functions = array(
-    'tool_usertours_fetch_and_start_tour' => array(
+$functions = [
+    'tool_usertours_fetch_and_start_tour' => [
         'classname'       => 'tool_usertours\external\tour',
         'methodname'      => 'fetch_and_start_tour',
         'description'     => 'Fetch the specified tour',
         'type'            => 'read',
         'capabilities'    => '',
         'ajax'            => true,
-    ),
+    ],
 
-    'tool_usertours_step_shown' => array(
+    'tool_usertours_step_shown' => [
         'classname'       => 'tool_usertours\external\tour',
         'methodname'      => 'step_shown',
         'description'     => 'Mark the specified step as completed for the current user',
         'type'            => 'write',
         'capabilities'    => '',
         'ajax'            => true,
-    ),
+    ],
 
-    'tool_usertours_complete_tour' => array(
+    'tool_usertours_complete_tour' => [
         'classname'       => 'tool_usertours\external\tour',
         'methodname'      => 'complete_tour',
         'description'     => 'Mark the specified tour as completed for the current user',
         'type'            => 'write',
         'capabilities'    => '',
         'ajax'            => true,
-    ),
+    ],
 
-    'tool_usertours_reset_tour' => array(
+    'tool_usertours_reset_tour' => [
         'classname'       => 'tool_usertours\external\tour',
         'methodname'      => 'reset_tour',
         'description'     => 'Remove the specified tour',
         'type'            => 'write',
         'capabilities'    => '',
         'ajax'            => true,
-    ),
-);
+    ],
+];
diff --git a/admin/tool/usertours/lang/en/tool_usertours.php b/admin/tool/usertours/lang/en/tool_usertours.php
index 0672417b728a..815806de4a9a 100644
--- a/admin/tool/usertours/lang/en/tool_usertours.php
+++ b/admin/tool/usertours/lang/en/tool_usertours.php
@@ -36,6 +36,9 @@
 Alternatively, a language string ID may be entered in the format identifier,component (with no brackets or space after the comma).';
 $string['displaystepnumbers'] = 'Display step numbers';
 $string['displaystepnumbers_help'] = 'Whether to display a step number count e.g. 1/4, 2/4 etc. to indicate the length of the user tour.';
+$string['showtourwhen'] = 'Show tour';
+$string['showtoureachtime'] = 'each time a filter matches it';
+$string['showtouruntilcomplete'] = 'until it has been closed';
 $string['confirmstepremovalquestion'] = 'Are you sure that you wish to remove this step?';
 $string['confirmstepremovaltitle'] = 'Confirm step removal';
 $string['confirmtourremovalquestion'] = 'Are you sure that you wish to remove this tour?';
diff --git a/admin/tool/usertours/tests/accessdate_filter_test.php b/admin/tool/usertours/tests/accessdate_filter_test.php
index 52b44c3c31b4..1458ee14763c 100644
--- a/admin/tool/usertours/tests/accessdate_filter_test.php
+++ b/admin/tool/usertours/tests/accessdate_filter_test.php
@@ -24,9 +24,9 @@
  * @package    tool_usertours
  * @copyright  2019 Tom Dickman <tomdickman@catalyst-au.net>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @covers    \tool_usertours\local\filter\accessdate
  */
 class accessdate_filter_test extends \advanced_testcase {
-
     public function setUp(): void {
         $this->resetAfterTest(true);
     }
@@ -36,7 +36,7 @@ public function setUp(): void {
      *
      * @return array
      */
-    public function filter_matches_provider() {
+    public static function filter_matches_provider(): array {
         return [
             'No config set; Matches' => [
                 [],
@@ -45,61 +45,61 @@ public function filter_matches_provider() {
             ],
             'Filter is not enabled; Match' => [
                 ['filter_accessdate' => accessdate::FILTER_ACCOUNT_CREATION, 'filter_accessdate_range' => 90 * DAYSECS,
-                    'filter_accessdate_enabled' => 0],
+                    'filter_accessdate_enabled' => 0, ],
                 ['timecreated' => time() - (89 * DAYSECS)],
                 true,
             ],
             'Filter is not enabled (tour would not be displayed if it was); Match' => [
                 ['filter_accessdate' => accessdate::FILTER_ACCOUNT_CREATION, 'filter_accessdate_range' => 90 * DAYSECS,
-                    'filter_accessdate_enabled' => 0],
+                    'filter_accessdate_enabled' => 0, ],
                 ['timecreated' => time() - (91 * DAYSECS)],
                 true,
             ],
             'Inside range of account creation date; Match' => [
                 ['filter_accessdate' => accessdate::FILTER_ACCOUNT_CREATION, 'filter_accessdate_range' => 90 * DAYSECS,
-                    'filter_accessdate_enabled' => 1],
+                    'filter_accessdate_enabled' => 1, ],
                 ['timecreated' => time() - (89 * DAYSECS)],
                 true,
             ],
             'Outside range of account creation date; No match' => [
                 ['filter_accessdate' => accessdate::FILTER_ACCOUNT_CREATION, 'filter_accessdate_range' => 90 * DAYSECS,
-                    'filter_accessdate_enabled' => 1],
+                    'filter_accessdate_enabled' => 1, ],
                 ['timecreated' => time() - (91 * DAYSECS)],
                 false,
             ],
             'Inside range of first login date; Match' => [
                 ['filter_accessdate' => accessdate::FILTER_FIRST_LOGIN, 'filter_accessdate_range' => 90 * DAYSECS,
-                    'filter_accessdate_enabled' => 1],
+                    'filter_accessdate_enabled' => 1, ],
                 ['firstaccess' => time() - (89 * DAYSECS)],
                 true,
             ],
             'Outside range of first login date; No match' => [
                 ['filter_accessdate' => accessdate::FILTER_FIRST_LOGIN, 'filter_accessdate_range' => 90 * DAYSECS,
-                    'filter_accessdate_enabled' => 1],
+                    'filter_accessdate_enabled' => 1, ],
                 ['firstaccess' => time() - (91 * DAYSECS)],
                 false,
             ],
             'Inside range of last login date; Match' => [
                 ['filter_accessdate' => accessdate::FILTER_LAST_LOGIN, 'filter_accessdate_range' => 90 * DAYSECS,
-                    'filter_accessdate_enabled' => 1],
+                    'filter_accessdate_enabled' => 1, ],
                 ['lastlogin' => time() - (89 * DAYSECS)],
                 true,
             ],
             'Outside range of last login date; No match' => [
                 ['filter_accessdate' => accessdate::FILTER_LAST_LOGIN, 'filter_accessdate_range' => 90 * DAYSECS,
-                    'filter_accessdate_enabled' => 1],
+                    'filter_accessdate_enabled' => 1, ],
                 ['lastlogin' => time() - (91 * DAYSECS)],
                 false,
             ],
             'User has never logged in, but tour should be visible; Match' => [
                 ['filter_accessdate' => accessdate::FILTER_LAST_LOGIN, 'filter_accessdate_range' => 90 * DAYSECS,
-                    'filter_accessdate_enabled' => 1],
+                    'filter_accessdate_enabled' => 1, ],
                 ['lastlogin' => 0, 'timecreated' => time() - (89 * DAYSECS)],
                 true,
             ],
             'User has never logged in, and tour should not be visible; No match' => [
                 ['filter_accessdate' => accessdate::FILTER_LAST_LOGIN, 'filter_accessdate_range' => 90 * DAYSECS,
-                    'filter_accessdate_enabled' => 1],
+                    'filter_accessdate_enabled' => 1, ],
                 ['lastlogin' => 0, 'timecreated' => time() - (91 * DAYSECS)],
                 false,
             ],
@@ -115,7 +115,7 @@ public function filter_matches_provider() {
      * @param array $userstate any user state required for test.
      * @param bool $expected result expected.
      */
-    public function test_filter_matches($filtervalues, $userstate, $expected) {
+    public function test_filter_matches($filtervalues, $userstate, $expected): void {
         $course = $this->getDataGenerator()->create_course();
         $context = \context_course::instance($course->id);
 
@@ -127,5 +127,4 @@ public function test_filter_matches($filtervalues, $userstate, $expected) {
 
         $this->assertEquals($expected, accessdate::filter_matches($tour, $context));
     }
-
 }
diff --git a/admin/tool/usertours/tests/behat/behat_tool_usertours.php b/admin/tool/usertours/tests/behat/behat_tool_usertours.php
index ef00bd2f7a01..797f5b5142a9 100644
--- a/admin/tool/usertours/tests/behat/behat_tool_usertours.php
+++ b/admin/tool/usertours/tests/behat/behat_tool_usertours.php
@@ -25,7 +25,7 @@
 
 require_once(__DIR__ . '/../../../../../lib/behat/behat_base.php');
 
-use Behat\Gherkin\Node\TableNode as TableNode;
+use Behat\Gherkin\Node\TableNode;
 /**
  * User tour related steps definitions.
  *
@@ -35,7 +35,6 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 class behat_tool_usertours extends behat_base {
-
     /**
      * Add a new user tour.
      *
@@ -90,8 +89,9 @@ public function i_add_steps_to_the_tour(TableNode $table) {
      * @Given /^I open the User tour settings page$/
      */
     public function i_open_the_user_tour_settings_page() {
-        $this->execute('behat_navigation::i_navigate_to_in_site_administration',
-                get_string('appearance', 'admin') . ' > ' .
+        $this->execute(
+            'behat_navigation::i_navigate_to_in_site_administration',
+            get_string('appearance', 'admin') . ' > ' .
                 get_string('usertours', 'tool_usertours')
         );
     }
diff --git a/admin/tool/usertours/tests/behat/tour_prevents_completion.feature b/admin/tool/usertours/tests/behat/tour_prevents_completion.feature
new file mode 100644
index 000000000000..0b2e687be9f5
--- /dev/null
+++ b/admin/tool/usertours/tests/behat/tour_prevents_completion.feature
@@ -0,0 +1,29 @@
+@tool @tool_usertours
+Feature: Prevent yours from being marked as complete
+    In order to impart key information
+    As an administrator
+    I can prevent a user tour from being marked as complete
+
+  Background:
+    Given I log in as "admin"
+    And I add a new user tour with:
+      | Name               | First tour    |
+      | Description        | My first tour |
+      | Apply to URL match | FRONTPAGE     |
+      | Tour is enabled    | 1             |
+      | Show with backdrop | 1             |
+      # 2 = tour::SHOW_TOUR_ON_EACH_PAGE_VISIT
+      | Show tour | 2 |
+    And I add steps to the "First tour" tour:
+      | targettype                | Title   | id_content    | Content type |
+      | Display in middle of page | Welcome | Welcome tour. | Manual       |
+
+  @javascript
+  Scenario: Ending the tour should not mark it as complete
+    # Changing the window viewport to mobile so we will have the footer section.
+    Given I am on site homepage
+    And I should see "Welcome"
+    And I press "Got it"
+    And I should not see "Welcome"
+    When I am on site homepage
+    Then I should see "Welcome"
diff --git a/admin/tool/usertours/tests/cache_test.php b/admin/tool/usertours/tests/cache_test.php
index 27f96008d12a..54cadfaf578a 100644
--- a/admin/tool/usertours/tests/cache_test.php
+++ b/admin/tool/usertours/tests/cache_test.php
@@ -27,6 +27,7 @@
  * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @covers    \tool_usertours\cache
  */
 class cache_test extends \advanced_testcase {
     // There are shared helpers for these tests in the helper trait.
@@ -35,7 +36,7 @@ class cache_test extends \advanced_testcase {
     /**
      * Test that get_enabled_tourdata does not return disabled tours.
      */
-    public function test_get_enabled_tourdata_disabled() {
+    public function test_get_enabled_tourdata_disabled(): void {
         $this->resetAfterTest();
 
         $tour = $this->helper_create_tour((object)['enabled' => false]);
@@ -48,7 +49,7 @@ public function test_get_enabled_tourdata_disabled() {
     /**
      * Test that get_enabled_tourdata does not return an enabled but empty tour.
      */
-    public function test_get_enabled_tourdata_enabled_no_steps() {
+    public function test_get_enabled_tourdata_enabled_no_steps(): void {
         $this->resetAfterTest();
 
         $this->helper_create_tour();
@@ -60,7 +61,7 @@ public function test_get_enabled_tourdata_enabled_no_steps() {
     /**
      * Test that get_enabled_tourdata returns a tour with steps.
      */
-    public function test_get_enabled_tourdata_enabled() {
+    public function test_get_enabled_tourdata_enabled(): void {
         $this->resetAfterTest();
 
         // Create two tours. Only the second has steps.
@@ -79,7 +80,7 @@ public function test_get_enabled_tourdata_enabled() {
     /**
      * Test that get_enabled_tourdata returns tours in the correct sortorder
      */
-    public function test_get_enabled_tourdata_enabled_sortorder() {
+    public function test_get_enabled_tourdata_enabled_sortorder(): void {
         $this->resetAfterTest();
 
         $tour1 = $this->helper_create_tour();
@@ -100,7 +101,7 @@ public function test_get_enabled_tourdata_enabled_sortorder() {
     /**
      * Test that caching prevents additional DB reads.
      */
-    public function test_get_enabled_tourdata_single_fetch() {
+    public function test_get_enabled_tourdata_single_fetch(): void {
         global $DB;
 
         $this->resetAfterTest();
@@ -118,7 +119,6 @@ public function test_get_enabled_tourdata_single_fetch() {
         // No subsequent reads for any further calls.
         $matches = \tool_usertours\cache::get_enabled_tourdata();
         $this->assertEquals(1, $DB->perf_get_reads() - $startreads);
-
     }
 
     /**
@@ -126,31 +126,31 @@ public function test_get_enabled_tourdata_single_fetch() {
      *
      * @return  array
      */
-    public function get_matching_tourdata_provider() {
+    public static function get_matching_tourdata_provider(): array {
         $tourconfigs = [
             (object) [
                 'name' => 'my_exact_1',
-                'pathmatch' => '/my/view.php'
+                'pathmatch' => '/my/view.php',
             ],
             (object) [
                 'name' => 'my_failed_regex',
-                'pathmatch' => '/my/*.php'
+                'pathmatch' => '/my/*.php',
             ],
             (object) [
                 'name' => 'my_glob_1',
-                'pathmatch' => '/my/%'
+                'pathmatch' => '/my/%',
             ],
             (object) [
                 'name' => 'my_glob_2',
-                'pathmatch' => '/my/%'
+                'pathmatch' => '/my/%',
             ],
             (object) [
                 'name' => 'frontpage_only',
-                'pathmatch' => 'FRONTPAGE'
+                'pathmatch' => 'FRONTPAGE',
             ],
             (object) [
                 'name' => 'frontpage_match',
-                'pathmatch' => '/?%'
+                'pathmatch' => '/?%',
             ],
         ];
 
@@ -186,7 +186,7 @@ public function get_matching_tourdata_provider() {
      * @param   string  $targetmatch    The match to be tested
      * @param   array   $expected       An array containing the ordered names of the expected tours
      */
-    public function test_get_matching_tourdata($tourconfigs, $targetmatch, $expected) {
+    public function test_get_matching_tourdata($tourconfigs, $targetmatch, $expected): void {
         $this->resetAfterTest();
         foreach ($tourconfigs as $tourconfig) {
             $tour = $this->helper_create_tour($tourconfig);
@@ -205,7 +205,7 @@ public function test_get_matching_tourdata($tourconfigs, $targetmatch, $expected
     /**
      * Test that notify_tour_change clears the cache.
      */
-    public function test_notify_tour_change() {
+    public function test_notify_tour_change(): void {
         global $DB;
 
         $this->resetAfterTest();
@@ -236,7 +236,7 @@ public function test_notify_tour_change() {
     /**
      * Test that get_stepdata returns an empty array when no steps were found.
      */
-    public function test_get_stepdata_no_steps() {
+    public function test_get_stepdata_no_steps(): void {
         $this->resetAfterTest();
 
         $tour = $this->helper_create_tour((object)['enabled' => false]);
@@ -249,7 +249,7 @@ public function test_get_stepdata_no_steps() {
     /**
      * Test that get_stepdata returns an empty array when no steps were found.
      */
-    public function test_get_stepdata_correct_tour() {
+    public function test_get_stepdata_correct_tour(): void {
         $this->resetAfterTest();
 
         $tour1 = $this->helper_create_tour((object)['enabled' => false]);
@@ -274,7 +274,7 @@ public function test_get_stepdata_correct_tour() {
      * This is very difficult to determine because the act of changing the
      * order will likely change the DB natural sorting.
      */
-    public function test_get_stepdata_ordered_steps() {
+    public function test_get_stepdata_ordered_steps(): void {
         $this->resetAfterTest();
 
         $tour = $this->helper_create_tour((object)['enabled' => false]);
@@ -290,7 +290,7 @@ public function test_get_stepdata_ordered_steps() {
         $this->assertCount(4, $data);
 
         // Re-order the steps.
-        usort($steps, function($a, $b) {
+        usort($steps, function ($a, $b) {
             return ($a->get_sortorder() < $b->get_sortorder()) ? -1 : 1;
         });
 
@@ -303,7 +303,7 @@ public function test_get_stepdata_ordered_steps() {
     /**
      * Test that caching prevents additional DB reads.
      */
-    public function test_get_stepdata_single_fetch() {
+    public function test_get_stepdata_single_fetch(): void {
         global $DB;
 
         $this->resetAfterTest();
@@ -324,7 +324,7 @@ public function test_get_stepdata_single_fetch() {
     /**
      * Test that notify_step_change clears the cache.
      */
-    public function test_notify_step_change() {
+    public function test_notify_step_change(): void {
         global $DB;
 
         $this->resetAfterTest();
diff --git a/admin/tool/usertours/tests/helper_test.php b/admin/tool/usertours/tests/helper_test.php
index f6c574b30776..3a2f1cdad262 100644
--- a/admin/tool/usertours/tests/helper_test.php
+++ b/admin/tool/usertours/tests/helper_test.php
@@ -14,35 +14,25 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Tests for helper.
- *
- * @package    tool_usertours
- * @copyright  2022 Huong Nguyen <huongnv13@gmail.com>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
 namespace tool_usertours;
 
 use advanced_testcase;
 
-defined('MOODLE_INTERNAL') || die();
-
 /**
  * Tests for helper.
  *
  * @package    tool_usertours
  * @copyright  2022 Huong Nguyen <huongnv13@gmail.com>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @covers   \tool_usertours\helper
  */
 class helper_test extends advanced_testcase {
-
     /**
      * Data Provider for get_string_from_input.
      *
      * @return array
      */
-    public function get_string_from_input_provider(): array {
+    public static function get_string_from_input_provider(): array {
         return [
             'Text'  => [
                 'example',
@@ -78,7 +68,7 @@ public function get_string_from_input_provider(): array {
      * @param string $string The string to test
      * @param string $expected The expected result
      */
-    public function test_get_string_from_input($string, $expected) {
+    public function test_get_string_from_input($string, $expected): void {
         $this->assertEquals($expected, helper::get_string_from_input($string));
     }
 }
diff --git a/admin/tool/usertours/tests/helper_trait.php b/admin/tool/usertours/tests/helper_trait.php
index c3638a1d41bf..988ace5abcd4 100644
--- a/admin/tool/usertours/tests/helper_trait.php
+++ b/admin/tool/usertours/tests/helper_trait.php
@@ -14,16 +14,6 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Helpers for unit tests.
- *
- * @package    tool_usertours
- * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
-defined('MOODLE_INTERNAL') || die();
-
 /**
  * Helpers for unit tests.
  *
@@ -47,7 +37,7 @@ public function helper_create_tour(\stdClass $tourconfig = null, $persist = true
             'name' => '',
             'description' => '',
             'configdata' => '',
-            'displaystepnumbers' => true
+            'displaystepnumbers' => true,
         ];
 
         if ($tourconfig === null) {
diff --git a/admin/tool/usertours/tests/manager_test.php b/admin/tool/usertours/tests/manager_test.php
index 17751f0aa745..924ba268e85f 100644
--- a/admin/tool/usertours/tests/manager_test.php
+++ b/admin/tool/usertours/tests/manager_test.php
@@ -28,6 +28,7 @@
  * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @covers \tool_usertours\manager
  */
 class manager_test extends \advanced_testcase {
     // There are shared helpers for these tests in the helper trait.
@@ -74,28 +75,28 @@ public function mock_database() {
      *
      * @return array
      */
-    public function sesskey_required_provider() {
+    public static function sesskey_required_provider(): array {
         $tourid = rand(1, 100);
         $stepid = rand(1, 100);
 
         return [
-                'Tour removal' => [
-                        'delete_tour',
-                        [$tourid],
-                    ],
-                'Step removal' => [
-                        'delete_step',
-                        [$stepid],
-                    ],
-                'Tour visibility' => [
-                        'show_hide_tour',
-                        [$tourid, true],
-                    ],
-                'Move step' => [
-                        'move_step',
-                        [$stepid],
-                    ],
-            ];
+            'Tour removal' => [
+                'delete_tour',
+                [$tourid],
+            ],
+            'Step removal' => [
+                'delete_step',
+                [$stepid],
+            ],
+            'Tour visibility' => [
+                'show_hide_tour',
+                [$tourid, true],
+            ],
+            'Move step' => [
+                'move_step',
+                [$stepid],
+            ],
+        ];
     }
 
     /**
@@ -105,12 +106,11 @@ public function sesskey_required_provider() {
      * @param   string  $function   The function to test
      * @param   array   $arguments  The arguments to pass with it
      */
-    public function test_sesskey_required($function, $arguments) {
+    public function test_sesskey_required($function, $arguments): void {
         $manager = new \tool_usertours\manager();
 
         $rc = new \ReflectionClass('\tool_usertours\manager');
         $rcm = $rc->getMethod($function);
-        $rcm->setAccessible(true);
 
         $this->expectException('moodle_exception');
         $rcm->invokeArgs($manager, $arguments);
@@ -121,7 +121,7 @@ public function test_sesskey_required($function, $arguments) {
      *
      * @return array
      */
-    public function move_tour_provider() {
+    public static function move_tour_provider(): array {
         $alltours = [
             ['name' => 'Tour 1'],
             ['name' => 'Tour 2'],
@@ -167,7 +167,7 @@ public function move_tour_provider() {
      * @param int $expectedsortorder
      * @return void
      */
-    public function test_move_tour($alltours, $movetourname, $direction, $expectedsortorder) {
+    public function test_move_tour($alltours, $movetourname, $direction, $expectedsortorder): void {
         global $DB;
 
         $this->resetAfterTest();
@@ -186,7 +186,6 @@ public function test_move_tour($alltours, $movetourname, $direction, $expectedso
         // Call protected method via reflection.
         $class = new \ReflectionClass(\tool_usertours\manager::class);
         $method = $class->getMethod('_move_tour');
-        $method->setAccessible(true);
         $method->invokeArgs(null, [$tour, $direction]);
 
         // Assert expected sortorder.
@@ -198,114 +197,115 @@ public function test_move_tour($alltours, $movetourname, $direction, $expectedso
      *
      * @return array
      */
-    public function get_matching_tours_provider() {
+    public static function get_matching_tours_provider(): array {
         global $CFG;
 
         $alltours = [
             [
-                    'pathmatch'     => '/my/%',
-                    'enabled'       => false,
-                    'name'          => 'Failure',
-                    'description'   => '',
-                    'configdata'    => '',
-                ],
+                'pathmatch'     => '/my/%',
+                'enabled'       => false,
+                'name'          => 'Failure',
+                'description'   => '',
+                'configdata'    => '',
+            ],
             [
-                    'pathmatch'     => '/my/%',
-                    'enabled'       => true,
-                    'name'          => 'My tour enabled',
-                    'description'   => '',
-                    'configdata'    => '',
-                ],
+                'pathmatch'     => '/my/%',
+                'enabled'       => true,
+                'name'          => 'My tour enabled',
+                'description'   => '',
+                'configdata'    => '',
+            ],
             [
-                    'pathmatch'     => '/my/%',
-                    'enabled'       => true,
-                    'name'          => 'My tour enabled 2',
-                    'description'   => '',
-                    'configdata'    => '',
-                ],
+                'pathmatch'     => '/my/%',
+                'enabled'       => true,
+                'name'          => 'My tour enabled 2',
+                'description'   => '',
+                'configdata'    => '',
+            ],
             [
-                    'pathmatch'     => '/my/%',
-                    'enabled'       => false,
-                    'name'          => 'Failure',
-                    'description'   => '',
-                    'configdata'    => '',
-                ],
+                'pathmatch'     => '/my/%',
+                'enabled'       => false,
+                'name'          => 'Failure',
+                'description'   => '',
+                'configdata'    => '',
+            ],
             [
-                    'pathmatch'     => '/course/?id=%foo=bar',
-                    'enabled'       => false,
-                    'name'          => 'Failure',
-                    'description'   => '',
-                    'configdata'    => '',
-                ],
+                'pathmatch'     => '/course/?id=%foo=bar',
+                'enabled'       => false,
+                'name'          => 'Failure',
+                'description'   => '',
+                'configdata'    => '',
+            ],
             [
-                    'pathmatch'     => '/course/?id=%foo=bar',
-                    'enabled'       => true,
-                    'name'          => 'course tour with additional params enabled',
-                    'description'   => '',
-                    'configdata'    => '',
-                ],
+                'pathmatch'     => '/course/?id=%foo=bar',
+                'enabled'       => true,
+                'name'          => 'course tour with additional params enabled',
+                'description'   => '',
+                'configdata'    => '',
+            ],
             [
-                    'pathmatch'     => '/course/?id=%foo=bar',
-                    'enabled'       => false,
-                    'name'          => 'Failure',
-                    'description'   => '',
-                    'configdata'    => '',
-                ],
+                'pathmatch'     => '/course/?id=%foo=bar',
+                'enabled'       => false,
+                'name'          => 'Failure',
+                'description'   => '',
+                'configdata'    => '',
+            ],
             [
-                    'pathmatch'     => '/course/?id=%',
-                    'enabled'       => false,
-                    'name'          => 'Failure',
-                    'description'   => '',
-                    'configdata'    => '',
-                ],
+                'pathmatch'     => '/course/?id=%',
+                'enabled'       => false,
+                'name'          => 'Failure',
+                'description'   => '',
+                'configdata'    => '',
+            ],
             [
-                    'pathmatch'     => '/course/?id=%',
-                    'enabled'       => true,
-                    'name'          => 'course tour enabled',
-                    'description'   => '',
-                    'configdata'    => '',
-                ],
+                'pathmatch'     => '/course/?id=%',
+                'enabled'       => true,
+                'name'          => 'course tour enabled',
+                'description'   => '',
+                'configdata'    => '',
+            ],
             [
-                    'pathmatch'     => '/course/?id=%',
-                    'enabled'       => false,
-                    'name'          => 'Failure',
-                    'description'   => '',
-                    'configdata'    => '',
-                ],
+                'pathmatch'     => '/course/?id=%',
+                'enabled'       => false,
+                'name'          => 'Failure',
+                'description'   => '',
+                'configdata'    => '',
+            ],
         ];
 
-        return [
-                'No matches found' => [
-                        $alltours,
-                        $CFG->wwwroot . '/some/invalid/value',
-                        [],
-                    ],
-                'Never return a disabled tour' => [
-                        $alltours,
-                        $CFG->wwwroot . '/my/index.php',
-                        ['My tour enabled', 'My tour enabled 2'],
-                    ],
-                'My not course' => [
-                        $alltours,
-                        $CFG->wwwroot . '/my/index.php',
-                        ['My tour enabled', 'My tour enabled 2'],
-                    ],
-                'My with params' => [
-                        $alltours,
-                        $CFG->wwwroot . '/my/index.php?id=42',
-                        ['My tour enabled', 'My tour enabled 2'],
-                    ],
-                'Course with params' => [
-                        $alltours,
-                        $CFG->wwwroot . '/course/?id=42',
-                        ['course tour enabled'],
-                    ],
-                'Course with params and trailing content' => [
-                        $alltours,
-                        $CFG->wwwroot . '/course/?id=42&foo=bar',
-                        ['course tour with additional params enabled', 'course tour enabled'],
-                    ],
-            ];
+        return
+        [
+            'No matches found' => [
+                $alltours,
+                $CFG->wwwroot . '/some/invalid/value',
+                [],
+            ],
+            'Never return a disabled tour' => [
+                $alltours,
+                $CFG->wwwroot . '/my/index.php',
+                ['My tour enabled', 'My tour enabled 2'],
+            ],
+            'My not course' => [
+                $alltours,
+                $CFG->wwwroot . '/my/index.php',
+                ['My tour enabled', 'My tour enabled 2'],
+            ],
+            'My with params' => [
+                $alltours,
+                $CFG->wwwroot . '/my/index.php?id=42',
+                ['My tour enabled', 'My tour enabled 2'],
+            ],
+            'Course with params' => [
+                $alltours,
+                $CFG->wwwroot . '/course/?id=42',
+                ['course tour enabled'],
+            ],
+            'Course with params and trailing content' => [
+                $alltours,
+                $CFG->wwwroot . '/course/?id=42&foo=bar',
+                ['course tour with additional params enabled', 'course tour enabled'],
+            ],
+        ];
     }
 
     /**
@@ -316,7 +316,7 @@ public function get_matching_tours_provider() {
      * @param   string  $url        The URL to test.
      * @param   array   $expected   List of names of the expected matching tours.
      */
-    public function test_get_matching_tours(array $alltours, string $url, array $expected) {
+    public function test_get_matching_tours(array $alltours, string $url, array $expected): void {
         $this->resetAfterTest();
 
         $this->setGuestUser();
@@ -336,7 +336,7 @@ public function test_get_matching_tours(array $alltours, string $url, array $exp
     /**
      * Test that no matching tours are returned if there is pending site policy agreement.
      */
-    public function test_get_matching_tours_for_user_without_site_policy_agreed() {
+    public function test_get_matching_tours_for_user_without_site_policy_agreed(): void {
         global $CFG;
 
         $this->resetAfterTest();
diff --git a/admin/tool/usertours/tests/privacy/provider_test.php b/admin/tool/usertours/tests/privacy/provider_test.php
index 907feb483524..e63ace554d3c 100644
--- a/admin/tool/usertours/tests/privacy/provider_test.php
+++ b/admin/tool/usertours/tests/privacy/provider_test.php
@@ -14,18 +14,8 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-/**
- * Unit tests for the tool_usertours implementation of the privacy API.
- *
- * @package    tool_usertours
- * @category   test
- * @copyright  2018 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
 namespace tool_usertours\privacy;
 
-defined('MOODLE_INTERNAL') || die();
-
 use core_privacy\local\metadata\collection;
 use core_privacy\local\request\writer;
 use tool_usertours\tour;
@@ -34,11 +24,13 @@
 /**
  * Unit tests for the tool_usertours implementation of the privacy API.
  *
+ * @package    tool_usertours
+ * @category   test
  * @copyright  2018 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @covers \tool_usertours\privacy\provider
  */
 class provider_test extends \core_privacy\tests\provider_testcase {
-
     /**
      * Helper method for creating a tour
      *
@@ -56,7 +48,7 @@ protected function create_test_tour(): tour {
     /**
      * Ensure that get_metadata exports valid content.
      */
-    public function test_get_metadata() {
+    public function test_get_metadata(): void {
         $items = new collection('tool_usertours');
         $result = provider::get_metadata($items);
         $this->assertSame($items, $result);
@@ -66,7 +58,7 @@ public function test_get_metadata() {
     /**
      * Ensure that export_user_preferences returns no data if the user has completed no tours.
      */
-    public function test_export_user_preferences_no_pref() {
+    public function test_export_user_preferences_no_pref(): void {
         $user = \core_user::get_user_by_username('admin');
         provider::export_user_preferences($user->id);
 
@@ -78,7 +70,7 @@ public function test_export_user_preferences_no_pref() {
     /**
      * Ensure that export_user_preferences returns request completion data.
      */
-    public function test_export_user_preferences_completed() {
+    public function test_export_user_preferences_completed(): void {
         global $DB;
 
         $this->resetAfterTest();
@@ -101,7 +93,7 @@ public function test_export_user_preferences_completed() {
     /**
      * Ensure that export_user_preferences returns request completion data.
      */
-    public function test_export_user_preferences_requested() {
+    public function test_export_user_preferences_requested(): void {
         global $DB;
 
         $this->resetAfterTest();
@@ -149,14 +141,16 @@ public function test_export_user_preferences_correct_user(): void {
         $this->assertCount(1, $prefs);
 
         // We should have received back the "completed tour" preference of the test user.
-        $this->assertStringStartsWith('You last marked the "' . $tour->get_name() . '" user tour as completed on',
-            reset($prefs)->description);
+        $this->assertStringStartsWith(
+            'You last marked the "' . $tour->get_name() . '" user tour as completed on',
+            reset($prefs)->description
+        );
     }
 
     /**
      * Ensure that export_user_preferences excludes deleted tours.
      */
-    public function test_export_user_preferences_deleted_tour() {
+    public function test_export_user_preferences_deleted_tour(): void {
         global $DB;
 
         $this->resetAfterTest();
diff --git a/admin/tool/usertours/tests/role_filter_test.php b/admin/tool/usertours/tests/role_filter_test.php
index 20ee1be96298..ceff72fb39ba 100644
--- a/admin/tool/usertours/tests/role_filter_test.php
+++ b/admin/tool/usertours/tests/role_filter_test.php
@@ -22,9 +22,9 @@
  * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @covers \tool_usertours\local\filter\role
  */
 class role_filter_test extends \advanced_testcase {
-
     /**
      * @var $course Test course
      */
@@ -72,7 +72,7 @@ public function setUp(): void {
     /**
      * Test the filter_matches function when any is set.
      */
-    public function test_filter_matches_any() {
+    public function test_filter_matches_any(): void {
         $context = \context_course::instance($this->course->id);
 
         // Note: No need to persist this tour.
@@ -93,7 +93,7 @@ public function test_filter_matches_any() {
     /**
      * Test the filter_matches function when one role is set.
      */
-    public function test_filter_matches_single_role() {
+    public function test_filter_matches_single_role(): void {
         $context = \context_course::instance($this->course->id);
 
         $roles = [
@@ -122,7 +122,7 @@ public function test_filter_matches_single_role() {
     /**
      * Test the filter_matches function when multiple roles are set.
      */
-    public function test_filter_matches_multiple_role() {
+    public function test_filter_matches_multiple_role(): void {
         $context = \context_course::instance($this->course->id);
 
         $roles = [
@@ -152,7 +152,7 @@ public function test_filter_matches_multiple_role() {
     /**
      * Test the filter_matches function when one user has multiple roles.
      */
-    public function test_filter_matches_multiple_role_one_user() {
+    public function test_filter_matches_multiple_role_one_user(): void {
         $context = \context_course::instance($this->course->id);
 
         $roles = [
@@ -184,7 +184,7 @@ public function test_filter_matches_multiple_role_one_user() {
     /**
      * Test the filter_matches function when it is targetted at an admin.
      */
-    public function test_filter_matches_multiple_role_only_admin() {
+    public function test_filter_matches_multiple_role_only_admin(): void {
         $context = \context_course::instance($this->course->id);
 
         $roles = [
@@ -212,7 +212,7 @@ public function test_filter_matches_multiple_role_only_admin() {
     /**
      * Test the filter_matches function when multiple roles are set, including an admin user.
      */
-    public function test_filter_matches_multiple_role_including_admin() {
+    public function test_filter_matches_multiple_role_including_admin(): void {
         $context = \context_course::instance($this->course->id);
 
         $roles = [
@@ -243,7 +243,7 @@ public function test_filter_matches_multiple_role_including_admin() {
     /**
      * Test the filter_matches function when an admin user has multiple roles.
      */
-    public function test_filter_matches_multiple_role_admin_user() {
+    public function test_filter_matches_multiple_role_admin_user(): void {
         global $USER;
 
         $context = \context_course::instance($this->course->id);
@@ -266,7 +266,7 @@ public function test_filter_matches_multiple_role_admin_user() {
     /**
      * Test that the get_filter_options function does not include the guest roles.
      */
-    public function test_get_filter_options_no_guest_roles() {
+    public function test_get_filter_options_no_guest_roles(): void {
         create_role('Test Role', 'testrole', 'This is a test role', 'guest');
 
         $allroles = role_get_names(null, ROLENAME_ALIAS);
diff --git a/admin/tool/usertours/tests/step_test.php b/admin/tool/usertours/tests/step_test.php
index 434908e01d53..8ba2cafa2faf 100644
--- a/admin/tool/usertours/tests/step_test.php
+++ b/admin/tool/usertours/tests/step_test.php
@@ -27,9 +27,9 @@
  * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @covers \tool_usertours\step
  */
 class step_test extends \advanced_testcase {
-
     /**
      * @var moodle_database
      */
@@ -62,8 +62,7 @@ public function mock_database() {
         global $DB;
 
         $DB = $this->getMockBuilder('moodle_database')
-            ->getMock()
-            ;
+            ->getMock();
 
         return $DB;
     }
@@ -73,64 +72,61 @@ public function mock_database() {
      *
      * @return array
      */
-    public function dirty_value_provider() {
-        return [
+    public static function dirty_value_provider(): array {
+        return
+            [
                 'tourid' => [
-                        'tourid',
-                        [1],
-                    ],
+                    'tourid',
+                    [1],
+                ],
                 'title' => [
-                        'title',
-                        ['Lorem'],
-                    ],
+                    'title',
+                    ['Lorem'],
+                ],
                 'content' => [
-                        'content',
-                        ['Lorem'],
-                    ],
+                    'content',
+                    ['Lorem'],
+                ],
                 'targettype' => [
-                        'targettype',
-                        ['Lorem'],
-                    ],
+                    'targettype',
+                    ['Lorem'],
+                ],
                 'targetvalue' => [
-                        'targetvalue',
-                        ['Lorem'],
-                    ],
+                    'targetvalue',
+                    ['Lorem'],
+                ],
                 'sortorder' => [
-                        'sortorder',
-                        [1],
-                    ],
+                    'sortorder',
+                    [1],
+                ],
                 'config' => [
-                        'config',
-                        ['key', 'value'],
-                    ],
+                    'config',
+                    ['key', 'value'],
+                ],
             ];
     }
 
     /**
      * Test the fetch function.
      */
-    public function test_fetch() {
+    public function test_fetch(): void {
         $step = $this->getMockBuilder(\tool_usertours\step::class)
             ->onlyMethods(['reload_from_record'])
-            ->getMock()
-            ;
+            ->getMock();
 
         $idretval = rand(1, 100);
         $DB = $this->mock_database();
         $DB->method('get_record')
-            ->willReturn($idretval)
-            ;
+            ->willReturn($idretval);
 
         $retval = rand(1, 100);
         $step->expects($this->once())
             ->method('reload_from_record')
             ->with($this->equalTo($idretval))
-            ->wilLReturn($retval)
-            ;
+            ->wilLReturn($retval);
 
         $rc = new \ReflectionClass(\tool_usertours\step::class);
         $rcm = $rc->getMethod('fetch');
-        $rcm->setAccessible(true);
 
         $id = rand(1, 100);
         $this->assertEquals($retval, $rcm->invoke($step, 'fetch', $id));
@@ -143,14 +139,13 @@ public function test_fetch() {
      * @param   string  $name       The key to update
      * @param   string  $value      The value to set
      */
-    public function test_dirty_values($name, $value) {
+    public function test_dirty_values($name, $value): void {
         $step = new \tool_usertours\step();
         $method = 'set_' . $name;
         call_user_func_array([$step, $method], $value);
 
         $rc = new \ReflectionClass(\tool_usertours\step::class);
         $rcp = $rc->getProperty('dirty');
-        $rcp->setAccessible(true);
 
         $this->assertTrue($rcp->getValue($step));
     }
@@ -160,12 +155,12 @@ public function test_dirty_values($name, $value) {
      *
      * @return array
      */
-    public function step_sortorder_provider() {
+    public static function step_sortorder_provider(): array {
         return [
-                [0, 5, true, false],
-                [1, 5, false, false],
-                [4, 5, false, true],
-            ];
+            [0, 5, true, false],
+            [1, 5, false, false],
+            [4, 5, false, true],
+        ];
     }
 
     /**
@@ -177,15 +172,14 @@ public function step_sortorder_provider() {
      * @param   bool    $isfirst        Whether this is the first step
      * @param   bool    $islast         Whether this is the last step
      */
-    public function test_is_first_step($sortorder, $count, $isfirst, $islast) {
+    public function test_is_first_step($sortorder, $count, $isfirst, $islast): void {
         $step = $this->getMockBuilder(\tool_usertours\step::class)
             ->onlyMethods(['get_sortorder'])
             ->getMock();
 
         $step->expects($this->once())
             ->method('get_sortorder')
-            ->willReturn($sortorder)
-            ;
+            ->willReturn($sortorder);
 
         $this->assertEquals($isfirst, $step->is_first_step());
     }
@@ -199,7 +193,7 @@ public function test_is_first_step($sortorder, $count, $isfirst, $islast) {
      * @param   bool    $isfirst        Whether this is the first step
      * @param   bool    $islast         Whether this is the last step
      */
-    public function test_is_last_step($sortorder, $count, $isfirst, $islast) {
+    public function test_is_last_step($sortorder, $count, $isfirst, $islast): void {
         $step = $this->getMockBuilder(\tool_usertours\step::class)
             ->onlyMethods(['get_sortorder', 'get_tour'])
             ->getMock();
@@ -210,18 +204,15 @@ public function test_is_last_step($sortorder, $count, $isfirst, $islast) {
 
         $step->expects($this->once())
             ->method('get_tour')
-            ->willReturn($tour)
-            ;
+            ->willReturn($tour);
 
         $tour->expects($this->once())
             ->method('count_steps')
-            ->willReturn($count)
-            ;
+            ->willReturn($count);
 
         $step->expects($this->once())
             ->method('get_sortorder')
-            ->willReturn($sortorder)
-            ;
+            ->willReturn($sortorder);
 
         $this->assertEquals($islast, $step->is_last_step());
     }
@@ -229,20 +220,19 @@ public function test_is_last_step($sortorder, $count, $isfirst, $islast) {
     /**
      * Test get_config with no keys provided.
      */
-    public function test_get_config_no_keys() {
+    public function test_get_config_no_keys(): void {
         $step = new \tool_usertours\step();
 
         $rc = new \ReflectionClass(\tool_usertours\step::class);
         $rcp = $rc->getProperty('config');
-        $rcp->setAccessible(true);
 
         $allvalues = (object) [
-                'some' => 'value',
-                'another' => 42,
-                'key' => [
-                    'somethingelse',
-                ],
-            ];
+            'some' => 'value',
+            'another' => 42,
+            'key' => [
+                'somethingelse',
+            ],
+        ];
 
         $rcp->setValue($step, $allvalues);
 
@@ -254,92 +244,92 @@ public function test_get_config_no_keys() {
      *
      * @return array
      */
-    public function get_config_provider() {
+    public static function get_config_provider(): array {
         $allvalues = (object) [
-                'some' => 'value',
-                'another' => 42,
-                'key' => [
-                    'somethingelse',
-                ],
-            ];
+            'some' => 'value',
+            'another' => 42,
+            'key' => [
+                'somethingelse',
+            ],
+        ];
 
         $tourconfig = rand(1, 100);
         $forcedconfig = rand(1, 100);
 
         return [
-                'No initial config' => [
-                        null,
-                        null,
-                        null,
-                        $tourconfig,
-                        false,
-                        $forcedconfig,
-                        (object) [],
-                    ],
-                'All values' => [
-                        $allvalues,
-                        null,
-                        null,
-                        $tourconfig,
-                        false,
-                        $forcedconfig,
-                        $allvalues,
-                    ],
-                'Valid string value' => [
-                        $allvalues,
-                        'some',
-                        null,
-                        $tourconfig,
-                        false,
-                        $forcedconfig,
-                        'value',
-                    ],
-                'Valid array value' => [
-                        $allvalues,
-                        'key',
-                        null,
-                        $tourconfig,
-                        false,
-                        $forcedconfig,
-                        ['somethingelse'],
-                    ],
-                'Invalid value' => [
-                        $allvalues,
-                        'notavalue',
-                        null,
-                        $tourconfig,
-                        false,
-                        $forcedconfig,
-                        $tourconfig,
-                    ],
-                'Configuration value' => [
-                        $allvalues,
-                        'placement',
-                        null,
-                        $tourconfig,
-                        false,
-                        $forcedconfig,
-                        $tourconfig,
-                    ],
-                'Invalid value with default' => [
-                        $allvalues,
-                        'notavalue',
-                        'somedefault',
-                        $tourconfig,
-                        false,
-                        $forcedconfig,
-                        'somedefault',
-                    ],
-                'Value forced at target' => [
-                        $allvalues,
-                        'somevalue',
-                        'somedefault',
-                        $tourconfig,
-                        true,
-                        $forcedconfig,
-                        $forcedconfig,
-                    ],
-            ];
+            'No initial config' => [
+                null,
+                null,
+                null,
+                $tourconfig,
+                false,
+                $forcedconfig,
+                (object) [],
+            ],
+            'All values' => [
+                $allvalues,
+                null,
+                null,
+                $tourconfig,
+                false,
+                $forcedconfig,
+                $allvalues,
+            ],
+            'Valid string value' => [
+                $allvalues,
+                'some',
+                null,
+                $tourconfig,
+                false,
+                $forcedconfig,
+                'value',
+            ],
+            'Valid array value' => [
+                $allvalues,
+                'key',
+                null,
+                $tourconfig,
+                false,
+                $forcedconfig,
+                ['somethingelse'],
+            ],
+            'Invalid value' => [
+                $allvalues,
+                'notavalue',
+                null,
+                $tourconfig,
+                false,
+                $forcedconfig,
+                $tourconfig,
+            ],
+            'Configuration value' => [
+                $allvalues,
+                'placement',
+                null,
+                $tourconfig,
+                false,
+                $forcedconfig,
+                $tourconfig,
+            ],
+            'Invalid value with default' => [
+                $allvalues,
+                'notavalue',
+                'somedefault',
+                $tourconfig,
+                false,
+                $forcedconfig,
+                'somedefault',
+            ],
+            'Value forced at target' => [
+                $allvalues,
+                'somevalue',
+                'somedefault',
+                $tourconfig,
+                true,
+                $forcedconfig,
+                $forcedconfig,
+            ],
+        ];
     }
 
     /**
@@ -354,55 +344,46 @@ public function get_config_provider() {
      * @param   mixed   $forcedvalue    The example value
      * @param   mixed   $expected   The expected value
      */
-    public function test_get_config_valid_keys($values, $key, $default, $tourconfig, $isforced, $forcedvalue, $expected) {
+    public function test_get_config_valid_keys($values, $key, $default, $tourconfig, $isforced, $forcedvalue, $expected): void {
         $step = $this->getMockBuilder(\tool_usertours\step::class)
             ->onlyMethods(['get_target', 'get_targettype', 'get_tour'])
             ->getMock();
 
         $rc = new \ReflectionClass(\tool_usertours\step::class);
         $rcp = $rc->getProperty('config');
-        $rcp->setAccessible(true);
         $rcp->setValue($step, $values);
 
         $target = $this->getMockBuilder(\tool_usertours\local\target\base::class)
             ->disableOriginalConstructor()
-            ->getMock()
-            ;
+            ->getMock();
 
         $target->expects($this->any())
             ->method('is_setting_forced')
-            ->willReturn($isforced)
-            ;
+            ->willReturn($isforced);
 
         $target->expects($this->any())
             ->method('get_forced_setting_value')
             ->with($this->equalTo($key))
-            ->willReturn($forcedvalue)
-            ;
+            ->willReturn($forcedvalue);
 
         $step->expects($this->any())
             ->method('get_targettype')
-            ->willReturn('type')
-            ;
+            ->willReturn('type');
 
         $step->expects($this->any())
             ->method('get_target')
-            ->willReturn($target)
-            ;
+            ->willReturn($target);
 
         $tour = $this->getMockBuilder(\tool_usertours\tour::class)
-            ->getMock()
-            ;
+            ->getMock();
 
         $tour->expects($this->any())
             ->method('get_config')
-            ->willReturn($tourconfig)
-            ;
+            ->willReturn($tourconfig);
 
         $step->expects($this->any())
             ->method('get_tour')
-            ->willReturn($tour)
-            ;
+            ->willReturn($tour);
 
         $this->assertEquals($expected, $step->get_config($key, $default));
     }
@@ -410,14 +391,14 @@ public function test_get_config_valid_keys($values, $key, $default, $tourconfig,
     /**
      * Data provider for set_config.
      */
-    public function set_config_provider() {
+    public static function set_config_provider(): array {
         $allvalues = (object) [
-                'some' => 'value',
-                'another' => 42,
-                'key' => [
-                    'somethingelse',
-                ],
-            ];
+            'some' => 'value',
+            'another' => 42,
+            'key' => [
+                'somethingelse',
+            ],
+        ];
 
         $randvalue = rand(1, 100);
 
@@ -426,27 +407,27 @@ public function set_config_provider() {
         $newvalues = $allvalues;
         $newvalues->some = 'unset';
         $provider['Unset an existing value'] = [
-                $allvalues,
-                'some',
-                null,
-                $newvalues,
-            ];
+            $allvalues,
+            'some',
+            null,
+            $newvalues,
+        ];
 
         $newvalues = $allvalues;
         $newvalues->some = $randvalue;
         $provider['Set an existing value'] = [
-                $allvalues,
-                'some',
-                $randvalue,
-                $newvalues,
-            ];
+            $allvalues,
+            'some',
+            $randvalue,
+            $newvalues,
+        ];
 
         $provider['Set a new value'] = [
-                $allvalues,
-                'newkey',
-                $randvalue,
-                (object) array_merge((array) $allvalues, ['newkey' => $randvalue]),
-            ];
+            $allvalues,
+            'newkey',
+            $randvalue,
+            (object) array_merge((array) $allvalues, ['newkey' => $randvalue]),
+        ];
 
         return $provider;
     }
@@ -460,23 +441,20 @@ public function set_config_provider() {
      * @param   mixed   $newvalue   The new value to set
      * @param   mixed   $expected   The expected value
      */
-    public function test_set_config($initialvalues, $key, $newvalue, $expected) {
+    public function test_set_config($initialvalues, $key, $newvalue, $expected): void {
         $step = new \tool_usertours\step();
 
         $rc = new \ReflectionClass(\tool_usertours\step::class);
         $rcp = $rc->getProperty('config');
-        $rcp->setAccessible(true);
         $rcp->setValue($step, $initialvalues);
 
         $target = $this->getMockBuilder(\tool_usertours\local\target\base::class)
             ->disableOriginalConstructor()
-            ->getMock()
-            ;
+            ->getMock();
 
         $target->expects($this->any())
             ->method('is_setting_forced')
-            ->willReturn(false)
-            ;
+            ->willReturn(false);
 
         $step->set_config($key, $newvalue);
 
@@ -486,22 +464,19 @@ public function test_set_config($initialvalues, $key, $newvalue, $expected) {
     /**
      * Ensure that non-dirty tours are not persisted.
      */
-    public function test_persist_non_dirty() {
+    public function test_persist_non_dirty(): void {
         $step = $this->getMockBuilder(\tool_usertours\step::class)
             ->onlyMethods([
-                    'to_record',
-                    'reload',
-                ])
-            ->getMock()
-            ;
+                'to_record',
+                'reload',
+            ])
+            ->getMock();
 
         $step->expects($this->never())
-            ->method('to_record')
-            ;
+            ->method('to_record');
 
         $step->expects($this->never())
-            ->method('reload')
-            ;
+            ->method('reload');
 
         $this->assertSame($step, $step->persist());
     }
@@ -509,45 +484,38 @@ public function test_persist_non_dirty() {
     /**
      * Ensure that new dirty steps are persisted.
      */
-    public function test_persist_dirty_new() {
+    public function test_persist_dirty_new(): void {
         // Mock the database.
         $DB = $this->mock_database();
         $DB->expects($this->once())
             ->method('insert_record')
-            ->willReturn(42)
-            ;
+            ->willReturn(42);
 
         // Mock the tour.
         $step = $this->getMockBuilder(\tool_usertours\step::class)
             ->onlyMethods([
-                    'to_record',
-                    'calculate_sortorder',
-                    'reload',
-                ])
-            ->getMock()
-            ;
+                'to_record',
+                'calculate_sortorder',
+                'reload',
+            ])
+            ->getMock();
 
         $step->expects($this->once())
             ->method('to_record')
             ->willReturn((object)['id' => 42]);
-            ;
 
         $step->expects($this->once())
-            ->method('calculate_sortorder')
-            ;
+            ->method('calculate_sortorder');
 
         $step->expects($this->once())
-            ->method('reload')
-            ;
+            ->method('reload');
 
         $rc = new \ReflectionClass(\tool_usertours\step::class);
         $rcp = $rc->getProperty('dirty');
-        $rcp->setAccessible(true);
         $rcp->setValue($step, true);
 
         $tour = $this->createMock(\tool_usertours\tour::class);
         $rcp = $rc->getProperty('tour');
-        $rcp->setAccessible(true);
         $rcp->setValue($step, $tour);
 
         $this->assertSame($step, $step->persist());
@@ -556,43 +524,37 @@ public function test_persist_dirty_new() {
     /**
      * Ensure that new non-dirty, forced steps are persisted.
      */
-    public function test_persist_force_new() {
+    public function test_persist_force_new(): void {
         global $DB;
 
         // Mock the database.
         $DB = $this->mock_database();
         $DB->expects($this->once())
             ->method('insert_record')
-            ->willReturn(42)
-            ;
+            ->willReturn(42);
 
         // Mock the tour.
         $step = $this->getMockBuilder(\tool_usertours\step::class)
             ->onlyMethods([
-                    'to_record',
-                    'calculate_sortorder',
-                    'reload',
-                ])
-            ->getMock()
-            ;
+                'to_record',
+                'calculate_sortorder',
+                'reload',
+            ])
+            ->getMock();
 
         $step->expects($this->once())
             ->method('to_record')
             ->willReturn((object)['id' => 42]);
-            ;
 
         $step->expects($this->once())
-            ->method('calculate_sortorder')
-            ;
+            ->method('calculate_sortorder');
 
         $step->expects($this->once())
-            ->method('reload')
-            ;
+            ->method('reload');
 
         $tour = $this->createMock(\tool_usertours\tour::class);
         $rc = new \ReflectionClass(\tool_usertours\step::class);
         $rcp = $rc->getProperty('tour');
-        $rcp->setAccessible(true);
         $rcp->setValue($step, $tour);
 
         $this->assertSame($step, $step->persist(true));
@@ -601,48 +563,40 @@ public function test_persist_force_new() {
     /**
      * Ensure that existing dirty steps are persisted.
      */
-    public function test_persist_dirty_existing() {
+    public function test_persist_dirty_existing(): void {
         // Mock the database.
         $DB = $this->mock_database();
         $DB->expects($this->once())
-            ->method('update_record')
-            ;
+            ->method('update_record');
 
         // Mock the tour.
         $step = $this->getMockBuilder(\tool_usertours\step::class)
             ->onlyMethods([
-                    'to_record',
-                    'calculate_sortorder',
-                    'reload',
-                ])
-            ->getMock()
-            ;
+                'to_record',
+                'calculate_sortorder',
+                'reload',
+            ])
+            ->getMock();
 
         $step->expects($this->once())
             ->method('to_record')
             ->willReturn((object)['id' => 42]);
-            ;
 
         $step->expects($this->never())
-            ->method('calculate_sortorder')
-            ;
+            ->method('calculate_sortorder');
 
         $step->expects($this->once())
-            ->method('reload')
-            ;
+            ->method('reload');
 
         $rc = new \ReflectionClass(\tool_usertours\step::class);
         $rcp = $rc->getProperty('id');
-        $rcp->setAccessible(true);
         $rcp->setValue($step, 42);
 
         $rcp = $rc->getProperty('dirty');
-        $rcp->setAccessible(true);
         $rcp->setValue($step, true);
 
         $tour = $this->createMock(\tool_usertours\tour::class);
         $rcp = $rc->getProperty('tour');
-        $rcp->setAccessible(true);
         $rcp->setValue($step, $tour);
 
         $this->assertSame($step, $step->persist());
@@ -651,46 +605,39 @@ public function test_persist_dirty_existing() {
     /**
      * Ensure that existing non-dirty, forced steps are persisted.
      */
-    public function test_persist_force_existing() {
+    public function test_persist_force_existing(): void {
         global $DB;
 
         // Mock the database.
         $DB = $this->mock_database();
         $DB->expects($this->once())
-            ->method('update_record')
-            ;
+            ->method('update_record');
 
         // Mock the tour.
         $step = $this->getMockBuilder(\tool_usertours\step::class)
             ->onlyMethods([
-                    'to_record',
-                    'calculate_sortorder',
-                    'reload',
-                ])
-            ->getMock()
-            ;
+                'to_record',
+                'calculate_sortorder',
+                'reload',
+            ])
+            ->getMock();
 
         $step->expects($this->once())
             ->method('to_record')
-            ->willReturn((object)['id' => 42]);
-            ;
+            ->willReturn((object) ['id' => 42]);
 
         $step->expects($this->never())
-            ->method('calculate_sortorder')
-            ;
+            ->method('calculate_sortorder');
 
         $step->expects($this->once())
-            ->method('reload')
-            ;
+            ->method('reload');
 
         $rc = new \ReflectionClass(\tool_usertours\step::class);
         $rcp = $rc->getProperty('id');
-        $rcp->setAccessible(true);
         $rcp->setValue($step, 42);
 
         $tour = $this->createMock(\tool_usertours\tour::class);
         $rcp = $rc->getProperty('tour');
-        $rcp->setAccessible(true);
         $rcp->setValue($step, $tour);
 
         $this->assertSame($step, $step->persist(true));
@@ -699,17 +646,15 @@ public function test_persist_force_existing() {
     /**
      * Check that a tour which has never been persisted is removed correctly.
      */
-    public function test_remove_non_persisted() {
+    public function test_remove_non_persisted(): void {
         $step = $this->getMockBuilder(\tool_usertours\step::class)
             ->onlyMethods([])
-            ->getMock()
-            ;
+            ->getMock();
 
         // Mock the database.
         $DB = $this->mock_database();
         $DB->expects($this->never())
-            ->method('delete_records')
-            ;
+            ->method('delete_records');
 
         $this->assertNull($step->remove());
     }
@@ -717,42 +662,36 @@ public function test_remove_non_persisted() {
     /**
      * Check that a tour which has been persisted is removed correctly.
      */
-    public function test_remove_persisted() {
+    public function test_remove_persisted(): void {
         $id = rand(1, 100);
 
         $tour = $this->getMockBuilder(\tool_usertours\tour::class)
             ->onlyMethods([
-                    'reset_step_sortorder',
-                ])
-            ->getMock()
-            ;
+                'reset_step_sortorder',
+            ])
+            ->getMock();
 
         $tour->expects($this->once())
-            ->method('reset_step_sortorder')
-            ;
+            ->method('reset_step_sortorder');
 
         $step = $this->getMockBuilder(\tool_usertours\step::class)
             ->onlyMethods([
-                    'get_tour',
-                ])
-            ->getMock()
-            ;
+                'get_tour',
+            ])
+            ->getMock();
 
         $step->expects($this->once())
             ->method('get_tour')
-            ->willReturn($tour)
-            ;
+            ->willReturn($tour);
 
         // Mock the database.
         $DB = $this->mock_database();
         $DB->expects($this->once())
             ->method('delete_records')
-            ->with($this->equalTo('tool_usertours_steps'), $this->equalTo(['id' => $id]))
-            ;
+            ->with($this->equalTo('tool_usertours_steps'), $this->equalTo(['id' => $id]));
 
         $rc = new \ReflectionClass(\tool_usertours\step::class);
         $rcp = $rc->getProperty('id');
-        $rcp->setAccessible(true);
         $rcp->setValue($step, $id);
 
         $this->assertEquals($id, $step->get_id());
@@ -764,37 +703,37 @@ public function test_remove_persisted() {
      *
      * @return array
      */
-    public function getter_provider() {
+    public static function getter_provider(): array {
         return [
-                'id' => [
-                        'id',
-                        rand(1, 100),
-                    ],
-                'tourid' => [
-                        'tourid',
-                        rand(1, 100),
-                    ],
-                'title' => [
-                        'title',
-                        'Lorem',
-                    ],
-                'content' => [
-                        'content',
-                        'Lorem',
-                    ],
-                'targettype' => [
-                        'targettype',
-                        'Lorem',
-                    ],
-                'targetvalue' => [
-                        'targetvalue',
-                        'Lorem',
-                    ],
-                'sortorder' => [
-                        'sortorder',
-                        rand(1, 100),
-                    ],
-            ];
+            'id' => [
+                'id',
+                rand(1, 100),
+            ],
+            'tourid' => [
+                'tourid',
+                rand(1, 100),
+            ],
+            'title' => [
+                'title',
+                'Lorem',
+            ],
+            'content' => [
+                'content',
+                'Lorem',
+            ],
+            'targettype' => [
+                'targettype',
+                'Lorem',
+            ],
+            'targetvalue' => [
+                'targetvalue',
+                'Lorem',
+            ],
+            'sortorder' => [
+                'sortorder',
+                rand(1, 100),
+            ],
+        ];
     }
 
     /**
@@ -804,13 +743,12 @@ public function getter_provider() {
      * @param   string  $key        The key to test
      * @param   mixed   $value      The expected value
      */
-    public function test_getters($key, $value) {
+    public function test_getters($key, $value): void {
         $step = new \tool_usertours\step();
 
         $rc = new \ReflectionClass(\tool_usertours\step::class);
 
         $rcp = $rc->getProperty($key);
-        $rcp->setAccessible(true);
         $rcp->setValue($step, $value);
 
         $getter = 'get_' . $key;
@@ -821,7 +759,7 @@ public function test_getters($key, $value) {
     /**
      * Ensure that the get_step_image_from_input function replace PIXICON placeholder with the correct images correctly.
      */
-    public function test_get_step_image_from_input() {
+    public function test_get_step_image_from_input(): void {
         // Test step content with single image.
         $stepcontent = '@@PIXICON::tour/tour_mycourses::tool_usertours@@<br>Test';
         $stepcontent = \tool_usertours\step::get_step_image_from_input($stepcontent);
@@ -832,7 +770,8 @@ public function test_get_step_image_from_input() {
         $this->assertStringNotContainsString('PIXICON', $stepcontent);
 
         // Test step content with multiple images.
-        $stepcontent = '@@PIXICON::tour/tour_mycourses::tool_usertours@@<br>Test<br>@@PIXICON::tour/tour_myhomepage::tool_usertours@@';
+        $stepcontent =
+            '@@PIXICON::tour/tour_mycourses::tool_usertours@@<br>Test<br>@@PIXICON::tour/tour_myhomepage::tool_usertours@@';
         $stepcontent = \tool_usertours\step::get_step_image_from_input($stepcontent);
         // If the format is correct, PIXICON placeholder will be replaced with the img tag.
         $this->assertStringStartsWith('<img', $stepcontent);
diff --git a/admin/tool/usertours/tests/theme_filter_test.php b/admin/tool/usertours/tests/theme_filter_test.php
index e3f7b1fae577..49f85db2a1c7 100644
--- a/admin/tool/usertours/tests/theme_filter_test.php
+++ b/admin/tool/usertours/tests/theme_filter_test.php
@@ -22,15 +22,15 @@
  * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @covers    \tool_usertours\local\filter\theme
  */
 class theme_filter_test extends \advanced_testcase {
-
     /**
      * Data Provider for filter_matches function.
      *
      * @return array
      */
-    public function filter_matches_provider() {
+    public static function filter_matches_provider(): array {
         return [
             'No config set; Matches' => [
                 null,
@@ -73,7 +73,7 @@ public function filter_matches_provider() {
      * @param   string      $currenttheme   The name of the current theme
      * @param   boolean     $expected       Whether the tour is expected to match
      */
-    public function test_filter_matches($filtervalues, $currenttheme, $expected) {
+    public function test_filter_matches($filtervalues, $currenttheme, $expected): void {
         global $PAGE;
 
         $filtername = \tool_usertours\local\filter\theme::class;
diff --git a/admin/tool/usertours/tests/tour_test.php b/admin/tool/usertours/tests/tour_test.php
index f7955dd94e45..e32df99a1f81 100644
--- a/admin/tool/usertours/tests/tour_test.php
+++ b/admin/tool/usertours/tests/tour_test.php
@@ -16,25 +16,25 @@
 
 namespace tool_usertours;
 
-defined('MOODLE_INTERNAL') || die();
-
-global $CFG;
-require_once($CFG->libdir . '/formslib.php');
-
 /**
  * Tests for tour.
  *
  * @package    tool_usertours
  * @copyright  2016 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @license    https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ * @covers    \tool_usertours\tour
  */
 class tour_test extends \advanced_testcase {
-
     /**
      * @var moodle_database
      */
     protected $db;
 
+    public static function setUpBeforeClass(): void {
+        global $CFG;
+        require_once($CFG->libdir . '/formslib.php');
+    }
+
     /**
      * Setup to store the DB reference.
      */
@@ -62,8 +62,7 @@ public function mock_database() {
         global $DB;
 
         $DB = $this->getMockBuilder(\moodle_database::class)
-            ->getMock()
-            ;
+            ->getMock();
 
         return $DB;
     }
@@ -73,33 +72,37 @@ public function mock_database() {
      *
      * @return array
      */
-    public function dirty_value_provider() {
+    public static function dirty_value_provider(): array {
         return [
-                'name' => [
-                        'name',
-                        ['Lorem'],
-                    ],
-                'description' => [
-                        'description',
-                        ['Lorem'],
-                    ],
-                'pathmatch' => [
-                        'pathmatch',
-                        ['Lorem'],
-                    ],
-                'enabled' => [
-                        'enabled',
-                        ['Lorem'],
-                    ],
-                'sortorder' => [
-                        'sortorder',
-                        [1],
-                    ],
-                'config' => [
-                        'config',
-                        ['key', 'value'],
-                    ],
-            ];
+            'name' => [
+                'name',
+                ['Lorem'],
+            ],
+            'description' => [
+                'description',
+                ['Lorem'],
+            ],
+            'pathmatch' => [
+                'pathmatch',
+                ['Lorem'],
+            ],
+            'enabled' => [
+                'enabled',
+                ['Lorem'],
+            ],
+            'sortorder' => [
+                'sortorder',
+                [1],
+            ],
+            'config' => [
+                'config',
+                ['key', 'value'],
+            ],
+            'showtourwhen' => [
+                'showtourwhen',
+                [0],
+            ],
+        ];
     }
 
     /**
@@ -109,14 +112,13 @@ public function dirty_value_provider() {
      * @param   string  $name           The name of the key being tested
      * @param   mixed   $value          The value being set
      */
-    public function test_dirty_values($name, $value) {
+    public function test_dirty_values($name, $value): void {
         $tour = new \tool_usertours\tour();
         $method = 'set_' . $name;
         call_user_func_array([$tour, $method], $value);
 
         $rc = new \ReflectionClass(\tool_usertours\tour::class);
         $rcp = $rc->getProperty('dirty');
-        $rcp->setAccessible(true);
 
         $this->assertTrue($rcp->getValue($tour));
     }
@@ -126,37 +128,37 @@ public function test_dirty_values($name, $value) {
      *
      * @return array
      */
-    public function getter_provider() {
+    public static function getter_provider(): array {
         return [
-                'id' => [
-                        'id',
-                        rand(1, 100),
-                    ],
-                'name' => [
-                        'name',
-                        'Lorem',
-                    ],
-                'description' => [
-                        'description',
-                        'Lorem',
-                    ],
-                'pathmatch' => [
-                        'pathmatch',
-                        'Lorem',
-                    ],
-                'enabled' => [
-                        'enabled',
-                        'Lorem',
-                    ],
-                'sortorder' => [
-                        'sortorder',
-                        rand(1, 100),
-                    ],
-                'config' => [
-                        'config',
-                        ['key', 'value'],
-                    ],
-            ];
+            'id' => [
+                'id',
+                rand(1, 100),
+            ],
+            'name' => [
+                'name',
+                'Lorem',
+            ],
+            'description' => [
+                'description',
+                'Lorem',
+            ],
+            'pathmatch' => [
+                'pathmatch',
+                'Lorem',
+            ],
+            'enabled' => [
+                'enabled',
+                'Lorem',
+            ],
+            'sortorder' => [
+                'sortorder',
+                rand(1, 100),
+            ],
+            'config' => [
+                'config',
+                ['key', 'value'],
+            ],
+        ];
     }
 
     /**
@@ -166,13 +168,12 @@ public function getter_provider() {
      * @param   string  $key            The name of the key being tested
      * @param   mixed   $value          The value being set
      */
-    public function test_getters($key, $value) {
+    public function test_getters($key, $value): void {
         $tour = new \tool_usertours\tour();
 
         $rc = new \ReflectionClass(tour::class);
 
         $rcp = $rc->getProperty($key);
-        $rcp->setAccessible(true);
         $rcp->setValue($tour, $value);
 
         $getter = 'get_' . $key;
@@ -183,15 +184,13 @@ public function test_getters($key, $value) {
     /**
      * Ensure that non-dirty tours are not persisted.
      */
-    public function test_persist_non_dirty() {
+    public function test_persist_non_dirty(): void {
         $tour = $this->getMockBuilder(tour::class)
             ->onlyMethods(['to_record'])
-            ->getMock()
-            ;
+            ->getMock();
 
         $tour->expects($this->never())
-            ->method('to_record')
-            ;
+            ->method('to_record');
 
         $this->assertSame($tour, $tour->persist());
     }
@@ -199,134 +198,114 @@ public function test_persist_non_dirty() {
     /**
      * Ensure that new dirty tours are persisted.
      */
-    public function test_persist_dirty_new() {
+    public function test_persist_dirty_new(): void {
         // Mock the database.
         $DB = $this->mock_database();
 
         $DB->expects($this->never())
-            ->method('update_record')
-            ;
+            ->method('update_record');
 
         $id = rand(1, 100);
         $DB->expects($this->once())
             ->method('insert_record')
-            ->willReturn($id)
-            ;
+            ->willReturn($id);
 
         // Mock the tour.
         $tour = $this->getMockBuilder(tour::class)
             ->onlyMethods([
-                    'to_record',
-                    'reload',
-                ])
-            ->getMock()
-            ;
+                'to_record',
+                'reload',
+            ])
+            ->getMock();
 
         $tour->expects($this->once())
-            ->method('to_record')
-            ;
+            ->method('to_record');
 
         $tour->expects($this->once())
-            ->method('reload')
-            ;
+            ->method('reload');
 
         $rc = new \ReflectionClass(tour::class);
 
         $rcp = $rc->getProperty('dirty');
-        $rcp->setAccessible(true);
         $rcp->setValue($tour, true);
 
         $this->assertSame($tour, $tour->persist());
 
         $rcp = $rc->getProperty('id');
-        $rcp->setAccessible(true);
         $this->assertEquals($id, $rcp->getValue($tour));
     }
 
     /**
      * Ensure that non-dirty, forced tours are persisted.
      */
-    public function test_persist_force_new() {
+    public function test_persist_force_new(): void {
         global $DB;
 
         // Mock the database.
         $DB = $this->mock_database();
 
         $DB->expects($this->never())
-            ->method('update_record')
-            ;
+            ->method('update_record');
 
         $id = rand(1, 100);
         $DB->expects($this->once())
             ->method('insert_record')
-            ->willReturn($id)
-            ;
+            ->willReturn($id);
 
         // Mock the tour.
         $tour = $this->getMockBuilder(tour::class)
             ->onlyMethods([
-                    'to_record',
-                    'reload',
-                ])
-            ->getMock()
-            ;
+                'to_record',
+                'reload',
+            ])
+            ->getMock();
 
         $tour->expects($this->once())
-            ->method('to_record')
-            ;
+            ->method('to_record');
 
         $tour->expects($this->once())
-            ->method('reload')
-            ;
+            ->method('reload');
 
         $this->assertSame($tour, $tour->persist(true));
 
         $rc = new \ReflectionClass(tour::class);
         $rcp = $rc->getProperty('id');
-        $rcp->setAccessible(true);
         $this->assertEquals($id, $rcp->getValue($tour));
     }
 
     /**
      * Ensure that dirty tours are persisted.
      */
-    public function test_persist_dirty_existing() {
+    public function test_persist_dirty_existing(): void {
         // Mock the database.
         $DB = $this->mock_database();
         $DB->expects($this->once())
             ->method('update_record')
-            ->willReturn($this->returnSelf())
-            ;
+            ->willReturn($this->returnSelf());
 
         $DB->expects($this->never())
-            ->method('insert_record')
-            ;
+            ->method('insert_record');
 
         // Mock the tour.
         $tour = $this->getMockBuilder(tour::class)
             ->onlyMethods([
-                    'to_record',
-                    'reload',
-                ])
-            ->getMock()
-            ;
+                'to_record',
+                'reload',
+            ])
+            ->getMock();
 
         $tour->expects($this->once())
-            ->method('to_record')
-            ;
+            ->method('to_record');
 
         $tour->expects($this->once())
-            ->method('reload')
-            ;
+            ->method('reload');
 
         $rc = new \ReflectionClass(tour::class);
 
         $rcp = $rc->getProperty('id');
-        $rcp->setAccessible(true);
         $rcp->setValue($tour, 42);
 
         $rcp = $rc->getProperty('dirty');
-        $rcp->setAccessible(true);
         $rcp->setValue($tour, true);
 
         $this->assertSame($tour, $tour->persist());
@@ -335,7 +314,7 @@ public function test_persist_dirty_existing() {
     /**
      * Ensure that non-dirty, forced tours are persisted.
      */
-    public function test_persist_force() {
+    public function test_persist_force(): void {
         global $DB;
 
         // Mock the database.
@@ -343,38 +322,31 @@ public function test_persist_force() {
 
         $DB->expects($this->once())
             ->method('update_record')
-            ->willReturn($this->returnSelf())
-            ;
+            ->willReturn($this->returnSelf());
 
         $DB->expects($this->never())
-            ->method('insert_record')
-            ;
+            ->method('insert_record');
 
         // Mock the tour.
         $tour = $this->getMockBuilder(tour::class)
             ->onlyMethods([
-                    'to_record',
-                    'reload',
-                ])
-            ->getMock()
-            ;
+                'to_record',
+                'reload',
+            ])
+            ->getMock();
 
         $tour->expects($this->once())
-            ->method('to_record')
-            ;
+            ->method('to_record');
 
         $tour->expects($this->once())
-            ->method('reload')
-            ;
+            ->method('reload');
 
         $rc = new \ReflectionClass(tour::class);
 
         $rcp = $rc->getProperty('id');
-        $rcp->setAccessible(true);
         $rcp->setValue($tour, 42);
 
         $rcp = $rc->getProperty('dirty');
-        $rcp->setAccessible(true);
         $rcp->setValue($tour, true);
 
         $this->assertSame($tour, $tour->persist(true));
@@ -383,42 +355,40 @@ public function test_persist_force() {
     /**
      * Test setting config.
      */
-    public function test_set_config() {
+    public function test_set_config(): void {
         $tour = new \tool_usertours\tour();
 
         $tour->set_config('key', 'value');
         $tour->set_config('another', [
-                'foo' => 'bar',
-            ]);
+            'foo' => 'bar',
+        ]);
 
         $rc = new \ReflectionClass(tour::class);
         $rcp = $rc->getProperty('config');
-        $rcp->setAccessible(true);
         $this->assertEquals((object) [
-                'key' => 'value',
-                'another' => [
-                    'foo' => 'bar',
-                ],
-            ], $rcp->getValue($tour));
+            'key' => 'value',
+            'another' => [
+                'foo' => 'bar',
+            ],
+        ], $rcp->getValue($tour));
     }
 
     /**
      * Test get_config with no keys provided.
      */
-    public function test_get_config_no_keys() {
+    public function test_get_config_no_keys(): void {
         $tour = new \tool_usertours\tour();
 
         $rc = new \ReflectionClass(tour::class);
         $rcp = $rc->getProperty('config');
-        $rcp->setAccessible(true);
 
         $allvalues = (object) [
-                'some' => 'value',
-                'another' => 42,
-                'key' => [
-                    'somethingelse',
-                ],
-            ];
+            'some' => 'value',
+            'another' => 42,
+            'key' => [
+                'somethingelse',
+            ],
+        ];
 
         $rcp->setValue($tour, $allvalues);
 
@@ -430,59 +400,59 @@ public function test_get_config_no_keys() {
      *
      * @return array
      */
-    public function get_config_provider() {
+    public static function get_config_provider(): array {
         $allvalues = (object) [
-                'some' => 'value',
-                'another' => 42,
-                'key' => [
-                    'somethingelse',
-                ],
-            ];
+            'some' => 'value',
+            'another' => 42,
+            'key' => [
+                'somethingelse',
+            ],
+        ];
 
         return [
-                'No nitial config' => [
-                        null,
-                        null,
-                        null,
-                        (object) [],
-                    ],
-                'All values' => [
-                        $allvalues,
-                        null,
-                        null,
-                        $allvalues,
-                    ],
-                'Valid string value' => [
-                        $allvalues,
-                        'some',
-                        null,
-                        'value',
-                    ],
-                'Valid array value' => [
-                        $allvalues,
-                        'key',
-                        null,
-                        ['somethingelse'],
-                    ],
-                'Invalid value' => [
-                        $allvalues,
-                        'notavalue',
-                        null,
-                        null,
-                    ],
-                'Configuration value' => [
-                        $allvalues,
-                        'placement',
-                        null,
-                        \tool_usertours\configuration::get_default_value('placement'),
-                    ],
-                'Invalid value with default' => [
-                        $allvalues,
-                        'notavalue',
-                        'somedefault',
-                        'somedefault',
-                    ],
-            ];
+            'No nitial config' => [
+                null,
+                null,
+                null,
+                (object) [],
+            ],
+            'All values' => [
+                $allvalues,
+                null,
+                null,
+                $allvalues,
+            ],
+            'Valid string value' => [
+                $allvalues,
+                'some',
+                null,
+                'value',
+            ],
+            'Valid array value' => [
+                $allvalues,
+                'key',
+                null,
+                ['somethingelse'],
+            ],
+            'Invalid value' => [
+                $allvalues,
+                'notavalue',
+                null,
+                null,
+            ],
+            'Configuration value' => [
+                $allvalues,
+                'placement',
+                null,
+                \tool_usertours\configuration::get_default_value('placement'),
+            ],
+            'Invalid value with default' => [
+                $allvalues,
+                'notavalue',
+                'somedefault',
+                'somedefault',
+            ],
+        ];
     }
 
     /**
@@ -494,12 +464,11 @@ public function get_config_provider() {
      * @param   mixed   $default    The default value
      * @param   mixed   $expected   The expected value
      */
-    public function test_get_config_valid_keys($values, $key, $default, $expected) {
+    public function test_get_config_valid_keys($values, $key, $default, $expected): void {
         $tour = new \tool_usertours\tour();
 
         $rc = new \ReflectionClass(tour::class);
         $rcp = $rc->getProperty('config');
-        $rcp->setAccessible(true);
         $rcp->setValue($tour, $values);
 
         $this->assertEquals($expected, $tour->get_config($key, $default));
@@ -508,23 +477,20 @@ public function test_get_config_valid_keys($values, $key, $default, $expected) {
     /**
      * Check that a tour which has never been persisted is removed correctly.
      */
-    public function test_remove_non_persisted() {
+    public function test_remove_non_persisted(): void {
         $tour = $this->getMockBuilder(tour::class)
             ->onlyMethods([
-                    'get_steps',
-                ])
-            ->getMock()
-            ;
+                'get_steps',
+            ])
+            ->getMock();
 
         $tour->expects($this->never())
-            ->method('get_steps')
-            ;
+            ->method('get_steps');
 
         // Mock the database.
         $DB = $this->mock_database();
         $DB->expects($this->never())
-            ->method('delete_records')
-            ;
+            ->method('delete_records');
 
         $this->assertNull($tour->remove());
     }
@@ -532,32 +498,28 @@ public function test_remove_non_persisted() {
     /**
      * Check that a tour which has been persisted is removed correctly.
      */
-    public function test_remove_persisted() {
+    public function test_remove_persisted(): void {
         $id = rand(1, 100);
 
         $tour = $this->getMockBuilder(tour::class)
             ->onlyMethods([
-                    'get_steps',
-                ])
-            ->getMock()
-            ;
+                'get_steps',
+            ])
+            ->getMock();
 
         $rc = new \ReflectionClass(tour::class);
         $rcp = $rc->getProperty('id');
-        $rcp->setAccessible(true);
         $rcp->setValue($tour, $id);
 
         $step = $this->getMockBuilder(\tool_usertours\step::class)
             ->onlyMethods([
-                    'remove',
-                ])
-            ->getMock()
-            ;
+                'remove',
+            ])
+            ->getMock();
 
         $tour->expects($this->once())
             ->method('get_steps')
-            ->willReturn([$step])
-            ;
+            ->willReturn([$step]);
 
         // Mock the database.
         $DB = $this->mock_database();
@@ -569,14 +531,12 @@ public function test_remove_persisted() {
                 [$this->equalTo('user_preferences'), $this->equalTo(['name' => tour::TOUR_LAST_COMPLETED_BY_USER . $id])],
                 [$this->equalTo('user_preferences'), $this->equalTo(['name' => tour::TOUR_REQUESTED_BY_USER . $id])]
             )
-            ->willReturn(null)
-            ;
+            ->willReturn(null);
 
         $DB->expects($this->once())
             ->method('get_records')
             ->with($this->equalTo('tool_usertours_tours'), $this->equalTo(null))
-            ->willReturn([])
-            ;
+            ->willReturn([]);
 
         $this->assertNull($tour->remove());
     }
@@ -584,7 +544,7 @@ public function test_remove_persisted() {
     /**
      * Teset that sortorder is reset according to sortorder with values from 0.
      */
-    public function test_reset_step_sortorder() {
+    public function test_reset_step_sortorder(): void {
         $tour = new \tool_usertours\tour();
 
         $mockdata = [];
@@ -598,12 +558,10 @@ public function test_reset_step_sortorder() {
         $DB = $this->mock_database();
         $DB->expects($this->once())
             ->method('get_records')
-            ->willReturn($mockdata)
-            ;
+            ->willReturn($mockdata);
 
         $setfield = $DB->expects($this->exactly(5))
-            ->method('set_field')
-            ;
+            ->method('set_field');
         call_user_func_array([$setfield, 'withConsecutive'], $expectations);
 
         $tour->reset_step_sortorder();
@@ -612,7 +570,7 @@ public function test_reset_step_sortorder() {
     /**
      * Test that a disabled tour should never be shown to users.
      */
-    public function test_should_show_for_user_disabled() {
+    public function test_should_show_for_user_disabled(): void {
         $tour = new \tool_usertours\tour();
         $tour->set_enabled(false);
 
@@ -624,40 +582,54 @@ public function test_should_show_for_user_disabled() {
      *
      * @return array
      */
-    public function should_show_for_user_provider() {
+    public static function should_show_for_user_provider(): array {
         $time = time();
         return [
-                'Not seen by user at all' => [
-                        null,
-                        null,
-                        null,
-                        true,
-                    ],
-                'Completed by user before majorupdatetime' => [
-                        $time - DAYSECS,
-                        null,
-                        $time,
-                        true,
-                    ],
-                'Completed by user since majorupdatetime' => [
-                        $time,
-                        null,
-                        $time - DAYSECS,
-                        false,
-                    ],
-                'Requested by user before current completion' => [
-                        $time,
-                        $time - DAYSECS,
-                        null,
-                        false,
-                    ],
-                'Requested by user since completion' => [
-                        $time - DAYSECS,
-                        $time,
-                        null,
-                        true,
-                    ],
-            ];
+            'Not seen by user at all' => [
+                null,
+                null,
+                null,
+                [],
+                true,
+            ],
+            'Completed by user before majorupdatetime' => [
+                $time - DAYSECS,
+                null,
+                $time,
+                [],
+                true,
+            ],
+            'Completed by user since majorupdatetime' => [
+                $time,
+                null,
+                $time - DAYSECS,
+                [],
+                false,
+            ],
+            'Requested by user before current completion' => [
+                $time,
+                $time - DAYSECS,
+                $time - MINSECS,
+                [],
+                false,
+            ],
+            'Requested by user since completion' => [
+                $time - DAYSECS,
+                $time,
+                'null',
+                [],
+                true,
+            ],
+            'Tour will show on each load' => [
+                $time,
+                $time - DAYSECS,
+                null,
+                [
+                    'showtourwhen' => tour::SHOW_TOUR_ON_EACH_PAGE_VISIT,
+                ],
+                true,
+            ],
+        ];
     }
 
     /**
@@ -667,30 +639,37 @@ public function should_show_for_user_provider() {
      * @param   mixed   $completiondate The user's completion date for this tour
      * @param   mixed   $requesteddate  The user's last requested date for this tour
      * @param   mixed   $updateddate    The date this tour was last updated
+     * @param   mixed   $config         The tour config to apply
      * @param   string  $expectation    The expected tour key
      */
-    public function test_should_show_for_user($completiondate, $requesteddate, $updateddate, $expectation) {
+    public function test_should_show_for_user(
+        $completiondate,
+        $requesteddate,
+        $updateddate,
+        $config,
+        $expectation,
+    ): void {
         // Uses user preferences so we must be in a user context.
         $this->resetAfterTest();
         $this->setAdminUser();
 
         $tour = $this->getMockBuilder(tour::class)
             ->onlyMethods([
-                    'get_id',
-                    'get_config',
-                    'is_enabled',
-                ])
-            ->getMock()
-            ;
+                'get_id',
+                'is_enabled',
+            ])
+            ->getMock();
 
         $tour->method('is_enabled')
-            ->willReturn(true)
-            ;
+            ->willReturn(true);
+
+        foreach ($config as $key => $value) {
+            $tour->set_config($key, $value);
+        }
 
         $id = rand(1, 100);
         $tour->method('get_id')
-            ->willReturn($id)
-            ;
+            ->willReturn($id);
 
         if ($completiondate !== null) {
             set_user_preference(\tool_usertours\tour::TOUR_LAST_COMPLETED_BY_USER . $id, $completiondate);
@@ -701,10 +680,7 @@ public function test_should_show_for_user($completiondate, $requesteddate, $upda
         }
 
         if ($updateddate !== null) {
-            $tour->expects($this->once())
-                ->method('get_config')
-                ->willReturn($updateddate)
-                ;
+            $tour->set_config('majorupdatetime', $updateddate);
         }
 
         $this->assertEquals($expectation, $tour->should_show_for_user());
@@ -715,44 +691,47 @@ public function test_should_show_for_user($completiondate, $requesteddate, $upda
      *
      * @return array
      */
-    public function get_tour_key_provider() {
+    public static function get_tour_key_provider(): array {
         $id = rand(1, 100);
         $time = time();
 
         return [
             'No initial values' => [
-                    $id,
-                    [null, $time],
-                    $this->greaterThanOrEqual($time),
-                    true,
-                    null,
-                    sprintf('tool_usertours_\d_%d_%s', $id, $time),
-                ],
+                $id,
+                [null, $time],
+                static::logicalOr(
+                    new \PHPUnit\Framework\Constraint\IsEqual($time),
+                    new \PHPUnit\Framework\Constraint\GreaterThan($time),
+                ),
+                true,
+                null,
+                sprintf('tool_usertours_\d_%d_%s', $id, $time),
+            ],
 
             'Initial tour time, no user pref' => [
-                    $id,
-                    [$time],
-                    null,
-                    false,
-                    null,
-                    sprintf('tool_usertours_\d_%d_%s', $id, $time),
-                ],
+                $id,
+                [$time],
+                null,
+                false,
+                null,
+                sprintf('tool_usertours_\d_%d_%s', $id, $time),
+            ],
             'Initial tour time, with user reset lower' => [
-                    $id,
-                    [$time],
-                    null,
-                    false,
-                    $time - DAYSECS,
-                    sprintf('tool_usertours_\d_%d_%s', $id, $time),
-                ],
+                $id,
+                [$time],
+                null,
+                false,
+                $time - DAYSECS,
+                sprintf('tool_usertours_\d_%d_%s', $id, $time),
+            ],
             'Initial tour time, with user reset higher' => [
-                    $id,
-                    [$time],
-                    null,
-                    false,
-                    $time + DAYSECS,
-                    sprintf('tool_usertours_\d_%d_%s', $id, $time + DAYSECS),
-                ],
+                $id,
+                [$time],
+                null,
+                false,
+                $time + DAYSECS,
+                sprintf('tool_usertours_\d_%d_%s', $id, $time + DAYSECS),
+            ],
         ];
     }
 
@@ -767,83 +746,74 @@ public function get_tour_key_provider() {
      * @param   mixed   $userpref       The value to set for the user preference
      * @param   string  $expectation    The expected tour key
      */
-    public function test_get_tour_key($id, $getconfig, $setconfig, $willpersist, $userpref, $expectation) {
+    public function test_get_tour_key($id, $getconfig, $setconfig, $willpersist, $userpref, $expectation): void {
         // Uses user preferences so we must be in a user context.
         $this->resetAfterTest();
         $this->setAdminUser();
 
         $tour = $this->getMockBuilder(tour::class)
             ->onlyMethods([
-                    'get_config',
-                    'set_config',
-                    'get_id',
-                    'persist',
-                ])
-            ->getMock()
-            ;
+                'get_config',
+                'set_config',
+                'get_id',
+                'persist',
+            ])
+            ->getMock();
 
         if ($getconfig) {
             $tour->expects($this->exactly(count($getconfig)))
                 ->method('get_config')
-                ->will(call_user_func_array([$this, 'onConsecutiveCalls'], $getconfig))
-                ;
+                ->will(call_user_func_array([$this, 'onConsecutiveCalls'], $getconfig));
         }
 
         if ($setconfig) {
             $tour->expects($this->once())
                 ->method('set_config')
                 ->with($this->equalTo('majorupdatetime'), $setconfig)
-                ->will($this->returnSelf())
-                ;
+                ->will($this->returnSelf());
         } else {
             $tour->expects($this->never())
-                ->method('set_config')
-                ;
+                ->method('set_config');
         }
 
         if ($willpersist) {
             $tour->expects($this->once())
-                ->method('persist')
-                ;
+                ->method('persist');
         } else {
             $tour->expects($this->never())
-                ->method('persist')
-                ;
+                ->method('persist');
         }
 
         $tour->expects($this->any())
             ->method('get_id')
-            ->willReturn($id)
-            ;
+            ->willReturn($id);
 
         if ($userpref !== null) {
             set_user_preference(\tool_usertours\tour::TOUR_REQUESTED_BY_USER . $id, $userpref);
         }
 
         $this->assertMatchesRegularExpression(
-                '/' . $expectation . '/',
-                $tour->get_tour_key()
-            );
+            '/' . $expectation . '/',
+            $tour->get_tour_key()
+        );
     }
 
     /**
      * Ensure that the request_user_reset function sets an appropriate value for the tour.
      */
-    public function test_requested_user_reset() {
+    public function test_requested_user_reset(): void {
         $tour = $this->getMockBuilder(tour::class)
             ->onlyMethods([
-                    'get_id',
-                ])
-            ->getMock()
-            ;
+                'get_id',
+            ])
+            ->getMock();
 
         $id = rand(1, 100);
         $time = time();
 
         $tour->expects($this->once())
             ->method('get_id')
-            ->willReturn($id)
-            ;
+            ->willReturn($id);
 
         $tour->request_user_reset();
 
@@ -853,21 +823,19 @@ public function test_requested_user_reset() {
     /**
      * Ensure that the request_user_reset function sets an appropriate value for the tour.
      */
-    public function test_mark_user_completed() {
+    public function test_mark_user_completed(): void {
         $tour = $this->getMockBuilder(tour::class)
             ->onlyMethods([
-                    'get_id',
-                ])
-            ->getMock()
-            ;
+                'get_id',
+            ])
+            ->getMock();
 
         $id = rand(1, 100);
         $time = time();
 
         $tour->expects($this->once())
             ->method('get_id')
-            ->willReturn($id)
-            ;
+            ->willReturn($id);
 
         $tour->mark_user_completed();
 
@@ -879,34 +847,34 @@ public function test_mark_user_completed() {
      *
      * @return array
      */
-    public function sortorder_first_last_provider() {
+    public static function sortorder_first_last_provider(): array {
         $topcount = rand(10, 100);
         return [
-                'Only tour => first + last' => [
-                        0,
-                        true,
-                        1,
-                        true,
-                    ],
-                'First tour of many' => [
-                        0,
-                        true,
-                        $topcount,
-                        false,
-                    ],
-                'Last tour of many' => [
-                        $topcount - 1,
-                        false,
-                        $topcount,
-                        true,
-                    ],
-                'Middle tour of many' => [
-                        5,
-                        false,
-                        $topcount,
-                        false,
-                    ],
-            ];
+            'Only tour => first + last' => [
+                0,
+                true,
+                1,
+                true,
+            ],
+            'First tour of many' => [
+                0,
+                true,
+                $topcount,
+                false,
+            ],
+            'Last tour of many' => [
+                $topcount - 1,
+                false,
+                $topcount,
+                true,
+            ],
+            'Middle tour of many' => [
+                5,
+                false,
+                $topcount,
+                false,
+            ],
+        ];
     }
 
     /**
@@ -918,12 +886,11 @@ public function sortorder_first_last_provider() {
      * @param   int     $total          The number of tours
      * @param   bool    $islast         Whether this is the last tour
      */
-    public function test_is_first_tour($sortorder, $isfirst, $total, $islast) {
+    public function test_is_first_tour($sortorder, $isfirst, $total, $islast): void {
         $tour = new \tool_usertours\tour();
 
         $rc = new \ReflectionClass(tour::class);
         $rcp = $rc->getProperty('sortorder');
-        $rcp->setAccessible(true);
         $rcp->setValue($tour, $sortorder);
 
         $this->assertEquals($isfirst, $tour->is_first_tour());
@@ -938,20 +905,18 @@ public function test_is_first_tour($sortorder, $isfirst, $total, $islast) {
      * @param   int     $total          The number of tours
      * @param   bool    $islast         Whether this is the last tour
      */
-    public function test_is_last_tour_calculated($sortorder, $isfirst, $total, $islast) {
+    public function test_is_last_tour_calculated($sortorder, $isfirst, $total, $islast): void {
         $tour = new \tool_usertours\tour();
 
         $rc = new \ReflectionClass(tour::class);
         $rcp = $rc->getProperty('sortorder');
-        $rcp->setAccessible(true);
         $rcp->setValue($tour, $sortorder);
 
         // The total will be calculated.
         $DB = $this->mock_database();
         $DB->expects($this->once())
             ->method('count_records')
-            ->willReturn($total)
-            ;
+            ->willReturn($total);
         $this->assertEquals($islast, $tour->is_last_tour());
     }
 
@@ -964,12 +929,11 @@ public function test_is_last_tour_calculated($sortorder, $isfirst, $total, $isla
      * @param   int     $total          The number of tours
      * @param   bool    $islast         Whether this is the last tour
      */
-    public function test_is_last_tour_provided($sortorder, $isfirst, $total, $islast) {
+    public function test_is_last_tour_provided($sortorder, $isfirst, $total, $islast): void {
         $tour = new \tool_usertours\tour();
 
         $rc = new \ReflectionClass(tour::class);
         $rcp = $rc->getProperty('sortorder');
-        $rcp->setAccessible(true);
         $rcp->setValue($tour, $sortorder);
 
         // The total is provided.
@@ -977,8 +941,7 @@ public function test_is_last_tour_provided($sortorder, $isfirst, $total, $islast
         $DB = $this->mock_database();
         $DB->expects($this->never())
             ->method('count_records')
-            ->willReturn(0)
-            ;
+            ->willReturn(0);
         $this->assertEquals($islast, $tour->is_last_tour($total));
     }
 
@@ -987,7 +950,7 @@ public function test_is_last_tour_provided($sortorder, $isfirst, $total, $islast
      *
      * @return array
      */
-    public function get_filter_values_provider() {
+    public static function get_filter_values_provider(): array {
         $cheese = ['cheddar', 'boursin', 'mozzarella'];
         $horses = ['coolie', 'dakota', 'leo', 'twiggy'];
         return [
@@ -1013,7 +976,7 @@ public function get_filter_values_provider() {
             'Some config for several filters' => [
                 [
                     'horses' => $horses,
-                    'cheese' => $cheese
+                    'cheese' => $cheese,
                 ],
                 'horses',
                 $horses,
@@ -1029,7 +992,7 @@ public function get_filter_values_provider() {
      * @param   string      $filtername     The name of the filter being tested
      * @param   array       $expectedvalues The expected result
      */
-    public function test_get_filter_values($fullconfig, $filtername, $expectedvalues) {
+    public function test_get_filter_values($fullconfig, $filtername, $expectedvalues): void {
         $tour = $this->getMockBuilder(tour::class)
             ->onlyMethods(['get_config'])
             ->getMock();
@@ -1046,7 +1009,7 @@ public function test_get_filter_values($fullconfig, $filtername, $expectedvalues
      *
      * @return  array
      */
-    public function set_filter_values_provider() {
+    public static function set_filter_values_provider(): array {
         $cheese = ['cheddar', 'boursin', 'mozzarella'];
         $horses = ['coolie', 'dakota', 'leo', 'twiggy'];
 
@@ -1087,7 +1050,7 @@ public function set_filter_values_provider() {
      * @param   array       $newvalues      The new values to store
      * @param   array       $expectedvalues The combined values
      */
-    public function test_set_filter_values_merge($currentvalues, $filtername, $newvalues, $expectedvalues) {
+    public function test_set_filter_values_merge($currentvalues, $filtername, $newvalues, $expectedvalues): void {
         $tour = $this->getMockBuilder(tour::class)
             ->onlyMethods(['get_config', 'set_config'])
             ->getMock();
diff --git a/analytics/tests/community_of_inquiry_activities_completed_by.php b/analytics/tests/community_of_inquiry_activities_completed_by.php
index cb76f02d8dbf..c8b4df5fa4db 100644
--- a/analytics/tests/community_of_inquiry_activities_completed_by.php
+++ b/analytics/tests/community_of_inquiry_activities_completed_by.php
@@ -78,7 +78,6 @@ public function test_get_activities_with_availability($availabilitylevel) {
         ));
 
         $method = new ReflectionMethod($availabilityinfo, 'set_in_database');
-        $method->setAccessible(true);
         $method->invoke($availabilityinfo, json_encode($structure));
 
         $this->setUser($stu1);
@@ -339,11 +338,9 @@ private function instantiate_indicator($modulename, \core_analytics\course $cour
         $class = new ReflectionClass($indicator);
 
         $property = $class->getProperty('course');
-        $property->setAccessible(true);
         $property->setValue($indicator, $course);
 
         $method = new ReflectionMethod($indicator, 'get_activities');
-        $method->setAccessible(true);
 
         return array($indicator, $method);
     }
diff --git a/analytics/tests/model_test.php b/analytics/tests/model_test.php
index 884ef3e610d1..b2a621379a0b 100644
--- a/analytics/tests/model_test.php
+++ b/analytics/tests/model_test.php
@@ -427,7 +427,6 @@ public function test_export_config() {
         $modelconfig = new \core_analytics\model_config($this->model);
 
         $method = new \ReflectionMethod('\\core_analytics\\model_config', 'export_model_data');
-        $method->setAccessible(true);
 
         $modeldata = $method->invoke($modelconfig);
 
diff --git a/auth/classes/output/login.php b/auth/classes/output/login.php
index 3800cb72ecc2..6854234c0d4b 100644
--- a/auth/classes/output/login.php
+++ b/auth/classes/output/login.php
@@ -75,6 +75,10 @@ class login implements renderable, templatable {
     public $maintenance;
     /** @var string ReCaptcha element HTML. */
     public $recaptcha;
+    /** @var bool Toggle the password visibility icon. */
+    public $togglepassword;
+    /** @var bool Toggle the password visibility icon for small screens only. */
+    public $smallscreensonly;
 
     /**
      * Constructor.
@@ -130,6 +134,11 @@ public function __construct(array $authsequence, $username = '') {
             require_once($CFG->libdir . '/recaptchalib_v2.php');
             $this->recaptcha = recaptcha_get_challenge_html(RECAPTCHA_API_URL, $CFG->recaptchapublickey);
         }
+
+        // Toggle password visibility icon.
+        $this->togglepassword = get_config('core', 'loginpasswordtoggle') == TOGGLE_SENSITIVE_ENABLED ||
+            get_config('core', 'loginpasswordtoggle') == TOGGLE_SENSITIVE_SMALL_SCREENS_ONLY;
+        $this->smallscreensonly = get_config('core', 'loginpasswordtoggle') == TOGGLE_SENSITIVE_SMALL_SCREENS_ONLY;
     }
 
     /**
@@ -175,6 +184,8 @@ public function export_for_template(renderer_base $output) {
         $data->maintenance = format_text($this->maintenance, FORMAT_MOODLE);
         $data->languagemenu = $this->languagemenu;
         $data->recaptcha = $this->recaptcha;
+        $data->togglepassword = $this->togglepassword;
+        $data->smallscreensonly = $this->smallscreensonly;
 
         return $data;
     }
diff --git a/auth/tests/behat/loginform.feature b/auth/tests/behat/loginform.feature
index a87301d421a7..cc4c01338e7c 100644
--- a/auth/tests/behat/loginform.feature
+++ b/auth/tests/behat/loginform.feature
@@ -101,3 +101,21 @@ Feature: Test if the login form provides the correct feedback
     And I press "Log in"
     And I press the tab key
     Then the focused element is "Username" "field"
+
+  Scenario: Display the password visibility toggle icon
+    Given the following config values are set as admin:
+      | loginpasswordtoggle | 1 |
+    When I follow "Log in"
+    Then "Toggle sensitive" "button" should be visible
+    And the following config values are set as admin:
+      | loginpasswordtoggle | 0 |
+    And I reload the page
+    And "Toggle sensitive" "button" should not be visible
+
+  Scenario: Display the password visibility toggle icon for small screens only
+    Given the following config values are set as admin:
+      | loginpasswordtoggle | 2 |
+    When I follow "Log in"
+    Then "Toggle sensitive" "button" should not be visible
+    And I change the viewport size to "mobile"
+    And "Toggle sensitive" "button" should be visible
diff --git a/backup/moodle2/tests/backup_stepslib_test.php b/backup/moodle2/tests/backup_stepslib_test.php
index 46dc1347cb1c..d06ec5ae69fd 100644
--- a/backup/moodle2/tests/backup_stepslib_test.php
+++ b/backup/moodle2/tests/backup_stepslib_test.php
@@ -74,7 +74,6 @@ public function test_backup_section_structure_step(): void {
 
         $reflection = new \ReflectionClass($step);
         $method = $reflection->getMethod('define_structure');
-        $method->setAccessible(true);
         $structure = $method->invoke($step);
 
         $elements = $structure->get_final_elements();
diff --git a/backup/moodle2/tests/restore_gradebook_structure_step_test.php b/backup/moodle2/tests/restore_gradebook_structure_step_test.php
index 2b47e14c80fd..a541f383cb7e 100644
--- a/backup/moodle2/tests/restore_gradebook_structure_step_test.php
+++ b/backup/moodle2/tests/restore_gradebook_structure_step_test.php
@@ -77,7 +77,6 @@ public function test_rewrite_step_backup_file_for_legacy_freeze($source, $expect
 
         $rc = new \ReflectionClass('\restore_gradebook_structure_step');
         $rcm = $rc->getMethod('rewrite_step_backup_file_for_legacy_freeze');
-        $rcm->setAccessible(true);
         $rcm->invoke($restore, $filepath);
 
         // Check the result.
diff --git a/backup/tests/automated_backup_test.php b/backup/tests/automated_backup_test.php
index 26831d2ab43f..42fdd102374b 100644
--- a/backup/tests/automated_backup_test.php
+++ b/backup/tests/automated_backup_test.php
@@ -116,11 +116,9 @@ public function test_automated_backup_skipped_run() {
         $classobject = $this->backupcronautomatedhelper->return_this();
 
         $method = new \ReflectionMethod('\backup_cron_automated_helper', 'get_courses');
-        $method->setAccessible(true); // Allow accessing of private method.
         $courses = $method->invoke($classobject);
 
         $method = new \ReflectionMethod('\backup_cron_automated_helper', 'check_and_push_automated_backups');
-        $method->setAccessible(true); // Allow accessing of private method.
         $emailpending = $method->invokeArgs($classobject, [$courses, $admin]);
 
         $this->expectOutputRegex('/Skipping course id ' . $this->course->id . ': Not scheduled for backup until/');
@@ -145,7 +143,6 @@ public function test_automated_backup_push_run() {
         $classobject = $this->backupcronautomatedhelper->return_this();
 
         $method = new \ReflectionMethod('\backup_cron_automated_helper', 'get_courses');
-        $method->setAccessible(true); // Allow accessing of private method.
         $courses = $method->invoke($classobject);
 
         // Create this backup course.
@@ -161,7 +158,6 @@ public function test_automated_backup_push_run() {
         $DB->update_record('backup_courses', $backupcourse);
 
         $method = new \ReflectionMethod('\backup_cron_automated_helper', 'check_and_push_automated_backups');
-        $method->setAccessible(true); // Allow accessing of private method.
         $emailpending = $method->invokeArgs($classobject, [$courses, $admin]);
         $this->assertTrue($emailpending);
 
@@ -204,7 +200,6 @@ public function test_should_skip_invisible_course() {
         $nextstarttime = backup_cron_automated_helper::calculate_next_automated_backup(null, time());
 
         $method = new \ReflectionMethod('\backup_cron_automated_helper', 'should_skip_course_backup');
-        $method->setAccessible(true); // Allow accessing of private method.
         $skipped = $method->invokeArgs($classobject, [$backupcourse, $course, $nextstarttime]);
 
         $this->assertTrue($skipped);
@@ -239,7 +234,6 @@ public function test_should_skip_not_modified_course_in_days() {
         $nextstarttime = backup_cron_automated_helper::calculate_next_automated_backup(null, time());
 
         $method = new \ReflectionMethod('\backup_cron_automated_helper', 'should_skip_course_backup');
-        $method->setAccessible(true); // Allow accessing of private method.
         $skipped = $method->invokeArgs($classobject, [$backupcourse, $course, $nextstarttime]);
 
         $this->assertTrue($skipped);
@@ -274,7 +268,6 @@ public function test_should_skip_not_modified_course_since_prev() {
         $nextstarttime = backup_cron_automated_helper::calculate_next_automated_backup(null, time());
 
         $method = new \ReflectionMethod('\backup_cron_automated_helper', 'should_skip_course_backup');
-        $method->setAccessible(true); // Allow accessing of private method.
         $skipped = $method->invokeArgs($classobject, [$backupcourse, $course, $nextstarttime]);
 
         $this->assertTrue($skipped);
@@ -298,7 +291,6 @@ public function test_task_complete_when_courseid_is_missing() {
 
         // Create a backup task.
         $method = new \ReflectionMethod('\backup_cron_automated_helper', 'push_course_backup_adhoc_task');
-        $method->setAccessible(true); // Allow accessing of private method.
         $method->invokeArgs($classobject, [$backupcourse, $admin]);
 
         // Delete course for this test.
@@ -331,7 +323,6 @@ public function test_task_complete_when_backup_course_is_missing() {
 
         // Create a backup task.
         $method = new \ReflectionMethod('\backup_cron_automated_helper', 'push_course_backup_adhoc_task');
-        $method->setAccessible(true); // Allow accessing of private method.
         $method->invokeArgs($classobject, [$backupcourse, $admin]);
 
         // Delete backup course for this test.
diff --git a/backup/util/dbops/tests/restore_dbops_test.php b/backup/util/dbops/tests/restore_dbops_test.php
index 325c01a4adbd..2be84704e080 100644
--- a/backup/util/dbops/tests/restore_dbops_test.php
+++ b/backup/util/dbops/tests/restore_dbops_test.php
@@ -351,7 +351,6 @@ public function test_precheck_user($dbuser, $backupuser, $samesite, $outcome) {
         $dbuser = $DB->get_record('user', ['id' => $dbuser->id]);
 
         $method = (new \ReflectionClass('restore_dbops'))->getMethod('precheck_user');
-        $method->setAccessible(true);
         $result = $method->invoke(null, $backupuser, $samesite, $siteid);
 
         if (is_bool($result)) {
diff --git a/backup/util/helper/tests/restore_log_rule_test.php b/backup/util/helper/tests/restore_log_rule_test.php
index 58c0cfc6ffae..83c004ffc1b6 100644
--- a/backup/util/helper/tests/restore_log_rule_test.php
+++ b/backup/util/helper/tests/restore_log_rule_test.php
@@ -62,11 +62,9 @@ public function test_build_regexp() {
         $class = new \ReflectionClass('restore_log_rule');
 
         $method = $class->getMethod('extract_tokens');
-        $method->setAccessible(true);
         $tokens = $method->invoke($lr, $original);
 
         $method = $class->getMethod('build_regexp');
-        $method->setAccessible(true);
         $this->assertSame($expectation, $method->invoke($lr, $original, $tokens));
     }
 }
diff --git a/badges/tests/badgeslib_test.php b/badges/tests/badgeslib_test.php
index df569b1cd4c7..555e2d8a7042 100644
--- a/badges/tests/badgeslib_test.php
+++ b/badges/tests/badgeslib_test.php
@@ -912,7 +912,6 @@ public function test_core_badges_myprofile_navigation() {
         core_badges_myprofile_navigation($tree, $this->user, $iscurrentuser, $course);
         $reflector = new ReflectionObject($tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayHasKey('localbadges', $nodes->getValue($tree));
     }
 
@@ -935,7 +934,6 @@ public function test_core_badges_myprofile_navigation_badges_disabled() {
         core_badges_myprofile_navigation($tree, $this->user, $iscurrentuser, $course);
         $reflector = new ReflectionObject($tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayNotHasKey('localbadges', $nodes->getValue($tree));
     }
 
@@ -954,7 +952,6 @@ public function test_core_badges_myprofile_navigation_with_course_badge() {
         core_badges_myprofile_navigation($tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new ReflectionObject($tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayHasKey('localbadges', $nodes->getValue($tree));
     }
 
diff --git a/badges/tests/behat/delete_awarded_badge.feature b/badges/tests/behat/delete_awarded_badge.feature
index 8d917144a519..39ae200b387d 100644
--- a/badges/tests/behat/delete_awarded_badge.feature
+++ b/badges/tests/behat/delete_awarded_badge.feature
@@ -34,8 +34,7 @@ Feature: Delete course badge already awarded
     # Navigate to Manage Badges page in order to delete the badge
     And I navigate to "Badges > Manage badges" in current page administration
     # Delete the badge
-    And I open the action menu in "<badgename>" "table_row"
-    And I choose "Delete" in the open action menu
+    And I press "Delete" action in the "<badgename>" report row
     And I press "<deleteoption>"
     And I am on the "Course 1" "enrolled users" page
     And I click on "Student 1" "link"
diff --git a/badges/tests/behat/manage_badges.feature b/badges/tests/behat/manage_badges.feature
index c06fabc29ce9..d9b6b0055c94 100644
--- a/badges/tests/behat/manage_badges.feature
+++ b/badges/tests/behat/manage_badges.feature
@@ -54,16 +54,14 @@ Feature: Manage badges
     And I set the field "Manager" to "1"
     And I press "Save"
     And I navigate to "Badges > Manage badges" in site administration
-    And I open the action menu in "Badge #1" "table_row"
-    And I choose "Enable access" in the open action menu
+    And I press "Enable access" action in the "Badge #1" report row
     And I should see "Changes in badge access"
     And I press "Continue"
     And I should see "Access to the badges was successfully enabled"
     Then the following should exist in the "reportbuilder-table" table:
       | Name      | Badge status  |
       | Badge #1  | Available     |
-    And I open the action menu in "Badge #1" "table_row"
-    And I choose "Disable access" in the open action menu
+    And I press "Disable access" action in the "Badge #1" report row
     And I should see "Access to the badges was successfully disabled"
     And the following should exist in the "reportbuilder-table" table:
       | Name      | Badge status  |
@@ -78,14 +76,12 @@ Feature: Manage badges
     And I set the field "Manager" to "1"
     And I press "Save"
     And I navigate to "Badges > Manage badges" in site administration
-    And I open the action menu in "Badge #1" "table_row"
-    And I choose "Enable access" in the open action menu
+    And I press "Enable access" action in the "Badge #1" report row
     And I press "Continue"
-    And I open the action menu in "Badge #1" "table_row"
-    And I choose "Award badge" in the open action menu
+    And I press "Award badge" action in the "Badge #1" report row
     And I set the field "potentialrecipients[]" to "Admin User (moodle@example.com)"
     And I press "Award badge"
     And I navigate to "Badges > Manage badges" in site administration
-    And the following should exist in the "reportbuilder-table" table:
+    Then the following should exist in the "reportbuilder-table" table:
       | Name      | Badge status  | Recipients |
       | Badge #1  | Available     | 1          |
diff --git a/badges/tests/behat/view_badge.feature b/badges/tests/behat/view_badge.feature
index 1f7795b3b9bd..2a82efa3efa0 100644
--- a/badges/tests/behat/view_badge.feature
+++ b/badges/tests/behat/view_badge.feature
@@ -38,8 +38,7 @@ Feature: Display badges
     And I navigate to "Badges > Manage badges" in site administration
     And I follow "Testing system badge"
     And I select "Recipients (1)" from the "jump" singleselect
-    And I open the action menu in "Student 1" "table_row"
-    And I choose "View issued badge" in the open action menu
+    And I press "View issued badge" action in the "Student 1" report row
     Then I should see "Awarded to Student 1"
     And I should see "This badge has to be awarded by a user with the following role:"
     And I should not see "Expired"
@@ -64,8 +63,7 @@ Feature: Display badges
     And I navigate to "Badges > Manage badges" in site administration
     And I follow "Testing system badge"
     And I select "Recipients (1)" from the "jump" singleselect
-    And I open the action menu in "Student 1" "table_row"
-    And I choose "View issued badge" in the open action menu
+    And I press "View issued badge" action in the "Student 1" report row
     Then I should see "Awarded to Student 1"
     And I should see "Complete ALL of the listed requirements."
     And I should see "This badge has to be awarded by a user with the following role:"
@@ -86,8 +84,7 @@ Feature: Display badges
     And I press "Continue"
     # Check badge details are displayed.
     And I select "Recipients (2)" from the "jump" singleselect
-    And I open the action menu in "Student 1" "table_row"
-    And I choose "View issued badge" in the open action menu
+    And I press "View issued badge" action in the "Student 1" report row
     Then I should see "Awarded to Student 1"
     And I should see "Complete ANY of the listed requirements."
     And I should see "This badge has to be awarded by a user with the following role:"
@@ -115,8 +112,7 @@ Feature: Display badges
     And I navigate to "Badges > Manage badges" in site administration
     And I follow "Testing system badge"
     And I select "Recipients (1)" from the "jump" singleselect
-    And I open the action menu in "Student 1" "table_row"
-    And I choose "View issued badge" in the open action menu
+    And I press "View issued badge" action in the "Student 1" report row
     Then I should see "Expires"
     And I should not see "Expired"
 
@@ -140,7 +136,6 @@ Feature: Display badges
     And I navigate to "Badges > Manage badges" in site administration
     And I follow "Testing system badge"
     And I select "Recipients (1)" from the "jump" singleselect
-    And I open the action menu in "Student 1" "table_row"
-    And I choose "View issued badge" in the open action menu
+    And I press "View issued badge" action in the "Student 1" report row
     Then I should see "Expired"
     And I should not see "Expires"
diff --git a/badges/tests/output/manage_badge_action_bar_test.php b/badges/tests/output/manage_badge_action_bar_test.php
index 0979f5e8c303..b93a3c7d2eda 100644
--- a/badges/tests/output/manage_badge_action_bar_test.php
+++ b/badges/tests/output/manage_badge_action_bar_test.php
@@ -134,7 +134,6 @@ public function test_generate_badge_navigation(string $role, array $expected) {
 
         $rc = new \ReflectionClass(manage_badge_action_bar::class);
         $rcm = $rc->getMethod('generate_badge_navigation');
-        $rcm->setAccessible(true);
         $content = $rcm->invoke($actionbar);
         $this->assertEquals($expected, array_values($content));
     }
diff --git a/blocks/accessreview/tests/accessibility_review_test.php b/blocks/accessreview/tests/accessibility_review_test.php
index 00f74ad458ca..8388fd31e95f 100644
--- a/blocks/accessreview/tests/accessibility_review_test.php
+++ b/blocks/accessreview/tests/accessibility_review_test.php
@@ -39,7 +39,6 @@ public static function setUpBeforeClass(): void {
     public function test_get_toggle_link() {
         $rc = new ReflectionClass(block_accessreview::class);
         $rm = $rc->getMethod('get_toggle_link');
-        $rm->setAccessible(true);
 
         $block = new block_accessreview();
         $output = $rm->invoke($block);
@@ -60,7 +59,6 @@ public function test_get_download_link() {
 
         $rc = new ReflectionClass(block_accessreview::class);
         $rm = $rc->getMethod('get_download_link');
-        $rm->setAccessible(true);
         $block = new block_accessreview();
 
         $this->setUser($user1);
@@ -86,7 +84,6 @@ public function test_get_report_link() {
 
         $rc = new ReflectionClass(block_accessreview::class);
         $rm = $rc->getMethod('get_report_link');
-        $rm->setAccessible(true);
         $block = new block_accessreview();
 
         $this->setUser($user1);
diff --git a/blocks/myoverview/classes/output/main.php b/blocks/myoverview/classes/output/main.php
index e9bb671e376c..abe98d9e2091 100644
--- a/blocks/myoverview/classes/output/main.php
+++ b/blocks/myoverview/classes/output/main.php
@@ -363,7 +363,14 @@ public function get_customfield_values_for_export() {
         if (!$this->displaygroupingcustomfield) {
             return [];
         }
-        $fieldid = $DB->get_field('customfield_field', 'id', ['shortname' => $this->customfiltergrouping]);
+
+        // Get the relevant customfield ID within the core_course/course component/area.
+        $fieldid = $DB->get_field_sql("
+            SELECT f.id
+              FROM {customfield_field} f
+              JOIN {customfield_category} c ON c.id = f.categoryid
+             WHERE f.shortname = :shortname AND c.component = 'core_course' AND c.area = 'course'
+        ", ['shortname' => $this->customfiltergrouping]);
         if (!$fieldid) {
             return [];
         }
diff --git a/blog/tests/lib_test.php b/blog/tests/lib_test.php
index 345e9d2936e8..0eb80f70e9b7 100644
--- a/blog/tests/lib_test.php
+++ b/blog/tests/lib_test.php
@@ -175,7 +175,6 @@ public function test_core_blog_myprofile_navigation() {
         core_blog_myprofile_navigation($tree, $USER, $iscurrentuser, $course);
         $reflector = new \ReflectionObject($tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayHasKey('blogs', $nodes->getValue($tree));
     }
 
@@ -197,7 +196,6 @@ public function test_core_blog_myprofile_navigation_as_guest() {
         core_blog_myprofile_navigation($tree, $USER, $iscurrentuser, $course);
         $reflector = new \ReflectionObject($tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayNotHasKey('blogs', $nodes->getValue($tree));
     }
 
@@ -220,7 +218,6 @@ public function test_core_blog_myprofile_navigation_blogs_disabled() {
         core_blog_myprofile_navigation($tree, $USER, $iscurrentuser, $course);
         $reflector = new \ReflectionObject($tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayNotHasKey('blogs', $nodes->getValue($tree));
     }
 
diff --git a/cache/stores/redis/lib.php b/cache/stores/redis/lib.php
index 3b3229302bb9..16a8d25d8f49 100644
--- a/cache/stores/redis/lib.php
+++ b/cache/stores/redis/lib.php
@@ -851,7 +851,6 @@ public static function initialise_test_instance(cache_definition $definition) {
         if (!empty($config->test_ttl)) {
             $definition = clone $definition;
             $property = (new ReflectionClass($definition))->getProperty('ttl');
-            $property->setAccessible(true);
             $property->setValue($definition, 999);
         }
         $cache = new cachestore_redis('Redis test', $configuration);
diff --git a/cache/tests/cache_test.php b/cache/tests/cache_test.php
index ac6df7fe274c..a080816856c3 100644
--- a/cache/tests/cache_test.php
+++ b/cache/tests/cache_test.php
@@ -2332,11 +2332,8 @@ public function test_application_locking_multiple_layers_failures(): void {
         // We need to get the individual stores so as to set up the right behaviour here.
         $ref = new \ReflectionClass('\cache');
         $definitionprop = $ref->getProperty('definition');
-        $definitionprop->setAccessible(true);
         $storeprop = $ref->getProperty('store');
-        $storeprop->setAccessible(true);
         $loaderprop = $ref->getProperty('loader');
-        $loaderprop->setAccessible(true);
 
         $definition = $definitionprop->getValue($cache);
         $localstore = $storeprop->getValue($cache);
@@ -2346,7 +2343,6 @@ public function test_application_locking_multiple_layers_failures(): void {
         // Set the lock waiting time to 1 second so it doesn't take forever to run the test.
         $ref = new \ReflectionClass('\cachestore_file');
         $lockwaitprop = $ref->getProperty('lockwait');
-        $lockwaitprop->setAccessible(true);
 
         $lockwaitprop->setValue($localstore, 1);
         $lockwaitprop->setValue($sharedstore, 1);
diff --git a/calendar/amd/build/calendar_threemonth.min.js b/calendar/amd/build/calendar_threemonth.min.js
deleted file mode 100644
index 93cae7033aaf..000000000000
--- a/calendar/amd/build/calendar_threemonth.min.js
+++ /dev/null
@@ -1,13 +0,0 @@
-/**
- * This module handles display of multiple mini calendars in a view, and
- * movement through them.
- *
- * @deprecated since 4.0 MDL-72810.
- * @todo       MDL-73117 This will be deleted in Moodle 4.4.
- * @module     core_calendar/calendar_threemonth
- * @copyright  2017 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-define("core_calendar/calendar_threemonth",["jquery","core/notification","core_calendar/selectors","core_calendar/events","core/templates","core_calendar/view_manager"],(function($,Notification,CalendarSelectors,CalendarEvents,Templates,CalendarViewManager){return{init:function(root){!function(root){$("body").on([CalendarEvents.monthChanged,CalendarEvents.dayChanged].join(" "),(function(e,year,month,courseId,categoryId){root.queue((function(next){return processRequest(e,year,month,courseId,categoryId).then((function(){return next()})).fail(Notification.exception)}))}));var processRequest=function(e,year,month,courseId,categoryId){var newParent=root.find('[data-year="'+year+'"][data-month="'+month+'"]').closest(CalendarSelectors.calendarPeriods.month),allMonths=root.find(CalendarSelectors.calendarPeriods.month),previousMonth=$(allMonths[0]),nextMonth=$(allMonths[2]),placeHolder=$("<span>");placeHolder.attr("data-template","core_calendar/threemonth_month"),placeHolder.attr("data-includenavigation",!1),placeHolder.attr("data-mini",!0);var requestYear,requestMonth,oldMonth,placeHolderContainer=$("<div>");if(placeHolderContainer.hide(),placeHolderContainer.append(placeHolder),newParent.is(previousMonth))placeHolderContainer.insertBefore(previousMonth),requestYear=previousMonth.data("previousYear"),requestMonth=previousMonth.data("previousMonth"),oldMonth=nextMonth;else{if(!newParent.is(nextMonth))return $.Deferred().resolve();placeHolderContainer.insertAfter(nextMonth),requestYear=nextMonth.data("nextYear"),requestMonth=nextMonth.data("nextMonth"),oldMonth=previousMonth}return CalendarViewManager.refreshMonthContent(placeHolder,requestYear,requestMonth,courseId,categoryId,placeHolder).then((function(){var slideUpPromise=$.Deferred(),slideDownPromise=$.Deferred();return oldMonth.slideUp("fast",(function(){$(this).remove(),slideUpPromise.resolve()})),placeHolderContainer.slideDown("fast",(function(){slideDownPromise.resolve()})),$.when(slideUpPromise,slideDownPromise)}))};root.on("click",CalendarSelectors.links.miniDayLink,(function(e){var miniDayLink=$(e.target),year=miniDayLink.data("year"),month=miniDayLink.data("month"),day=miniDayLink.text(),courseId=miniDayLink.data("courseid"),categoryId=miniDayLink.data("categoryid"),calendarRoot=$("body").find(CalendarSelectors.calendarMain);CalendarViewManager.refreshDayContent(calendarRoot,year,month,day,courseId,categoryId,calendarRoot.find('[id^="calendar-"][data-template^="core_calendar/"]'),"core_calendar/calendar_day"),e.preventDefault(),CalendarViewManager.updateUrl("?view=day")}))}(root=$(root))}}}));
-
-//# sourceMappingURL=calendar_threemonth.min.js.map
\ No newline at end of file
diff --git a/calendar/amd/build/calendar_threemonth.min.js.map b/calendar/amd/build/calendar_threemonth.min.js.map
deleted file mode 100644
index fc4a2155b072..000000000000
--- a/calendar/amd/build/calendar_threemonth.min.js.map
+++ /dev/null
@@ -1 +0,0 @@
-{"version":3,"file":"calendar_threemonth.min.js","sources":["../src/calendar_threemonth.js"],"sourcesContent":["// This file is part of Moodle - http://moodle.org/\n//\n// Moodle is free software: you can redistribute it and/or modify\n// it under the terms of the GNU General Public License as published by\n// the Free Software Foundation, either version 3 of the License, or\n// (at your option) any later version.\n//\n// Moodle is distributed in the hope that it will be useful,\n// but WITHOUT ANY WARRANTY; without even the implied warranty of\n// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n// GNU General Public License for more details.\n//\n// You should have received a copy of the GNU General Public License\n// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.\n\n/**\n * This module handles display of multiple mini calendars in a view, and\n * movement through them.\n *\n * @deprecated since 4.0 MDL-72810.\n * @todo       MDL-73117 This will be deleted in Moodle 4.4.\n * @module     core_calendar/calendar_threemonth\n * @copyright  2017 Andrew Nicols <andrew@nicols.co.uk>\n * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later\n */\ndefine([\n    'jquery',\n    'core/notification',\n    'core_calendar/selectors',\n    'core_calendar/events',\n    'core/templates',\n    'core_calendar/view_manager',\n],\nfunction(\n    $,\n    Notification,\n    CalendarSelectors,\n    CalendarEvents,\n    Templates,\n    CalendarViewManager\n) {\n\n    /**\n     * Listen to and handle any calendar events fired by the calendar UI.\n     *\n     * @method registerCalendarEventListeners\n     * @param {object} root The calendar root element\n     */\n    var registerCalendarEventListeners = function(root) {\n        var body = $('body');\n        body.on([CalendarEvents.monthChanged, CalendarEvents.dayChanged].join(' '), function(e, year, month, courseId, categoryId) {\n            // We have to use a queue here because the calling code is decoupled from these listeners.\n            // It's possible for the event to be called multiple times before one call is fully resolved.\n            root.queue(function(next) {\n                return processRequest(e, year, month, courseId, categoryId)\n                .then(function() {\n                    return next();\n                })\n                .fail(Notification.exception)\n                ;\n            });\n        });\n\n        var processRequest = function(e, year, month, courseId, categoryId) {\n            var newCurrentMonth = root.find('[data-year=\"' + year + '\"][data-month=\"' + month + '\"]');\n            var newParent = newCurrentMonth.closest(CalendarSelectors.calendarPeriods.month);\n            var allMonths = root.find(CalendarSelectors.calendarPeriods.month);\n\n            var previousMonth = $(allMonths[0]);\n            var nextMonth = $(allMonths[2]);\n\n            var placeHolder = $('<span>');\n            placeHolder.attr('data-template', 'core_calendar/threemonth_month');\n            placeHolder.attr('data-includenavigation', false);\n            placeHolder.attr('data-mini', true);\n            var placeHolderContainer = $('<div>');\n            placeHolderContainer.hide();\n            placeHolderContainer.append(placeHolder);\n\n            var requestYear;\n            var requestMonth;\n            var oldMonth;\n\n            if (newParent.is(previousMonth)) {\n                // Fetch the new previous month.\n                placeHolderContainer.insertBefore(previousMonth);\n\n                requestYear = previousMonth.data('previousYear');\n                requestMonth = previousMonth.data('previousMonth');\n                oldMonth = nextMonth;\n            } else if (newParent.is(nextMonth)) {\n                // Fetch the new next month.\n                placeHolderContainer.insertAfter(nextMonth);\n                requestYear = nextMonth.data('nextYear');\n                requestMonth = nextMonth.data('nextMonth');\n                oldMonth = previousMonth;\n            } else {\n                return $.Deferred().resolve();\n            }\n\n            return CalendarViewManager.refreshMonthContent(\n                placeHolder,\n                requestYear,\n                requestMonth,\n                courseId,\n                categoryId,\n                placeHolder\n            )\n            .then(function() {\n                var slideUpPromise = $.Deferred();\n                var slideDownPromise = $.Deferred();\n                oldMonth.slideUp('fast', function() {\n                    $(this).remove();\n                    slideUpPromise.resolve();\n                });\n                placeHolderContainer.slideDown('fast', function() {\n                    slideDownPromise.resolve();\n                });\n\n                return $.when(slideUpPromise, slideDownPromise);\n            });\n        };\n\n        // Listen for a click on the day link in the three month block to load the day view.\n        root.on('click', CalendarSelectors.links.miniDayLink, function(e) {\n\n                var miniDayLink = $(e.target);\n                var year = miniDayLink.data('year'),\n                    month = miniDayLink.data('month'),\n                    day = miniDayLink.text(),\n                    courseId = miniDayLink.data('courseid'),\n                    categoryId = miniDayLink.data('categoryid'),\n                    calendarRoot = $('body').find(CalendarSelectors.calendarMain);\n                CalendarViewManager.refreshDayContent(calendarRoot, year, month, day, courseId, categoryId,\n                    calendarRoot.find('[id^=\"calendar-\"][data-template^=\"core_calendar/\"]'), 'core_calendar/calendar_day');\n                e.preventDefault();\n                CalendarViewManager.updateUrl('?view=day');\n        });\n    };\n\n    return {\n        init: function(root) {\n            root = $(root);\n\n            registerCalendarEventListeners(root);\n        }\n    };\n});\n"],"names":["define","$","Notification","CalendarSelectors","CalendarEvents","Templates","CalendarViewManager","init","root","on","monthChanged","dayChanged","join","e","year","month","courseId","categoryId","queue","next","processRequest","then","fail","exception","newParent","find","closest","calendarPeriods","allMonths","previousMonth","nextMonth","placeHolder","attr","requestYear","requestMonth","oldMonth","placeHolderContainer","hide","append","is","insertBefore","data","Deferred","resolve","insertAfter","refreshMonthContent","slideUpPromise","slideDownPromise","slideUp","this","remove","slideDown","when","links","miniDayLink","target","day","text","calendarRoot","calendarMain","refreshDayContent","preventDefault","updateUrl","registerCalendarEventListeners"],"mappings":";;;;;;;;;;AAyBAA,2CAAO,CACH,SACA,oBACA,0BACA,uBACA,iBACA,+BAEJ,SACIC,EACAC,aACAC,kBACAC,eACAC,UACAC,2BAqGO,CACHC,KAAM,SAASC,OA7FkB,SAASA,MAC/BP,EAAE,QACRQ,GAAG,CAACL,eAAeM,aAAcN,eAAeO,YAAYC,KAAK,MAAM,SAASC,EAAGC,KAAMC,MAAOC,SAAUC,YAG3GT,KAAKU,OAAM,SAASC,aACTC,eAAeP,EAAGC,KAAMC,MAAOC,SAAUC,YAC/CI,MAAK,kBACKF,UAEVG,KAAKpB,aAAaqB,qBAKvBH,eAAiB,SAASP,EAAGC,KAAMC,MAAOC,SAAUC,gBAEhDO,UADkBhB,KAAKiB,KAAK,eAAiBX,KAAO,kBAAoBC,MAAQ,MACpDW,QAAQvB,kBAAkBwB,gBAAgBZ,OACtEa,UAAYpB,KAAKiB,KAAKtB,kBAAkBwB,gBAAgBZ,OAExDc,cAAgB5B,EAAE2B,UAAU,IAC5BE,UAAY7B,EAAE2B,UAAU,IAExBG,YAAc9B,EAAE,UACpB8B,YAAYC,KAAK,gBAAiB,kCAClCD,YAAYC,KAAK,0BAA0B,GAC3CD,YAAYC,KAAK,aAAa,OAK1BC,YACAC,aACAC,SANAC,qBAAuBnC,EAAE,YAC7BmC,qBAAqBC,OACrBD,qBAAqBE,OAAOP,aAMxBP,UAAUe,GAAGV,eAEbO,qBAAqBI,aAAaX,eAElCI,YAAcJ,cAAcY,KAAK,gBACjCP,aAAeL,cAAcY,KAAK,iBAClCN,SAAWL,cACR,CAAA,IAAIN,UAAUe,GAAGT,kBAOb7B,EAAEyC,WAAWC,UALpBP,qBAAqBQ,YAAYd,WACjCG,YAAcH,UAAUW,KAAK,YAC7BP,aAAeJ,UAAUW,KAAK,aAC9BN,SAAWN,qBAKRvB,oBAAoBuC,oBACvBd,YACAE,YACAC,aACAlB,SACAC,WACAc,aAEHV,MAAK,eACEyB,eAAiB7C,EAAEyC,WACnBK,iBAAmB9C,EAAEyC,kBACzBP,SAASa,QAAQ,QAAQ,WACrB/C,EAAEgD,MAAMC,SACRJ,eAAeH,aAEnBP,qBAAqBe,UAAU,QAAQ,WACnCJ,iBAAiBJ,aAGd1C,EAAEmD,KAAKN,eAAgBC,sBAKtCvC,KAAKC,GAAG,QAASN,kBAAkBkD,MAAMC,aAAa,SAASzC,OAEnDyC,YAAcrD,EAAEY,EAAE0C,QAClBzC,KAAOwC,YAAYb,KAAK,QACxB1B,MAAQuC,YAAYb,KAAK,SACzBe,IAAMF,YAAYG,OAClBzC,SAAWsC,YAAYb,KAAK,YAC5BxB,WAAaqC,YAAYb,KAAK,cAC9BiB,aAAezD,EAAE,QAAQwB,KAAKtB,kBAAkBwD,cACpDrD,oBAAoBsD,kBAAkBF,aAAc5C,KAAMC,MAAOyC,IAAKxC,SAAUC,WAC5EyC,aAAajC,KAAK,sDAAuD,8BAC7EZ,EAAEgD,iBACFvD,oBAAoBwD,UAAU,gBAQlCC,CAFAvD,KAAOP,EAAEO"}
\ No newline at end of file
diff --git a/calendar/amd/src/calendar_threemonth.js b/calendar/amd/src/calendar_threemonth.js
deleted file mode 100644
index 576f6c10bc58..000000000000
--- a/calendar/amd/src/calendar_threemonth.js
+++ /dev/null
@@ -1,148 +0,0 @@
-// This file is part of Moodle - http://moodle.org/
-//
-// Moodle is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Moodle is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
-
-/**
- * This module handles display of multiple mini calendars in a view, and
- * movement through them.
- *
- * @deprecated since 4.0 MDL-72810.
- * @todo       MDL-73117 This will be deleted in Moodle 4.4.
- * @module     core_calendar/calendar_threemonth
- * @copyright  2017 Andrew Nicols <andrew@nicols.co.uk>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-define([
-    'jquery',
-    'core/notification',
-    'core_calendar/selectors',
-    'core_calendar/events',
-    'core/templates',
-    'core_calendar/view_manager',
-],
-function(
-    $,
-    Notification,
-    CalendarSelectors,
-    CalendarEvents,
-    Templates,
-    CalendarViewManager
-) {
-
-    /**
-     * Listen to and handle any calendar events fired by the calendar UI.
-     *
-     * @method registerCalendarEventListeners
-     * @param {object} root The calendar root element
-     */
-    var registerCalendarEventListeners = function(root) {
-        var body = $('body');
-        body.on([CalendarEvents.monthChanged, CalendarEvents.dayChanged].join(' '), function(e, year, month, courseId, categoryId) {
-            // We have to use a queue here because the calling code is decoupled from these listeners.
-            // It's possible for the event to be called multiple times before one call is fully resolved.
-            root.queue(function(next) {
-                return processRequest(e, year, month, courseId, categoryId)
-                .then(function() {
-                    return next();
-                })
-                .fail(Notification.exception)
-                ;
-            });
-        });
-
-        var processRequest = function(e, year, month, courseId, categoryId) {
-            var newCurrentMonth = root.find('[data-year="' + year + '"][data-month="' + month + '"]');
-            var newParent = newCurrentMonth.closest(CalendarSelectors.calendarPeriods.month);
-            var allMonths = root.find(CalendarSelectors.calendarPeriods.month);
-
-            var previousMonth = $(allMonths[0]);
-            var nextMonth = $(allMonths[2]);
-
-            var placeHolder = $('<span>');
-            placeHolder.attr('data-template', 'core_calendar/threemonth_month');
-            placeHolder.attr('data-includenavigation', false);
-            placeHolder.attr('data-mini', true);
-            var placeHolderContainer = $('<div>');
-            placeHolderContainer.hide();
-            placeHolderContainer.append(placeHolder);
-
-            var requestYear;
-            var requestMonth;
-            var oldMonth;
-
-            if (newParent.is(previousMonth)) {
-                // Fetch the new previous month.
-                placeHolderContainer.insertBefore(previousMonth);
-
-                requestYear = previousMonth.data('previousYear');
-                requestMonth = previousMonth.data('previousMonth');
-                oldMonth = nextMonth;
-            } else if (newParent.is(nextMonth)) {
-                // Fetch the new next month.
-                placeHolderContainer.insertAfter(nextMonth);
-                requestYear = nextMonth.data('nextYear');
-                requestMonth = nextMonth.data('nextMonth');
-                oldMonth = previousMonth;
-            } else {
-                return $.Deferred().resolve();
-            }
-
-            return CalendarViewManager.refreshMonthContent(
-                placeHolder,
-                requestYear,
-                requestMonth,
-                courseId,
-                categoryId,
-                placeHolder
-            )
-            .then(function() {
-                var slideUpPromise = $.Deferred();
-                var slideDownPromise = $.Deferred();
-                oldMonth.slideUp('fast', function() {
-                    $(this).remove();
-                    slideUpPromise.resolve();
-                });
-                placeHolderContainer.slideDown('fast', function() {
-                    slideDownPromise.resolve();
-                });
-
-                return $.when(slideUpPromise, slideDownPromise);
-            });
-        };
-
-        // Listen for a click on the day link in the three month block to load the day view.
-        root.on('click', CalendarSelectors.links.miniDayLink, function(e) {
-
-                var miniDayLink = $(e.target);
-                var year = miniDayLink.data('year'),
-                    month = miniDayLink.data('month'),
-                    day = miniDayLink.text(),
-                    courseId = miniDayLink.data('courseid'),
-                    categoryId = miniDayLink.data('categoryid'),
-                    calendarRoot = $('body').find(CalendarSelectors.calendarMain);
-                CalendarViewManager.refreshDayContent(calendarRoot, year, month, day, courseId, categoryId,
-                    calendarRoot.find('[id^="calendar-"][data-template^="core_calendar/"]'), 'core_calendar/calendar_day');
-                e.preventDefault();
-                CalendarViewManager.updateUrl('?view=day');
-        });
-    };
-
-    return {
-        init: function(root) {
-            root = $(root);
-
-            registerCalendarEventListeners(root);
-        }
-    };
-});
diff --git a/calendar/renderer.php b/calendar/renderer.php
index b6c867835574..5134fa007fa5 100644
--- a/calendar/renderer.php
+++ b/calendar/renderer.php
@@ -51,63 +51,10 @@ public function complete_layout() {
     }
 
     /**
-     * Produces the content for the three months block (pretend block)
-     *
-     * This includes the previous month, the current month, and the next month
-     *
      * @deprecated since 4.0 MDL-72810.
-     * @todo MDL-73117 This will be deleted in Moodle 4.4.
-     *
-     * @param calendar_information $calendar
-     * @return string
      */
-    public function fake_block_threemonths(calendar_information $calendar) {
-        debugging('This method is no longer used as the three month calendar block has been removed', DEBUG_DEVELOPER);
-
-        // Get the calendar type we are using.
-        $calendartype = \core_calendar\type_factory::get_calendar_instance();
-        $time = $calendartype->timestamp_to_date_array($calendar->time);
-
-        $current = $calendar->time;
-        $prevmonthyear = $calendartype->get_prev_month($time['year'], $time['mon']);
-        $prev = $calendartype->convert_to_timestamp(
-                $prevmonthyear[1],
-                $prevmonthyear[0],
-                1
-            );
-        $nextmonthyear = $calendartype->get_next_month($time['year'], $time['mon']);
-        $next = $calendartype->convert_to_timestamp(
-                $nextmonthyear[1],
-                $nextmonthyear[0],
-                1
-            );
-
-        $content = '';
-
-        // Previous.
-        $calendar->set_time($prev);
-        list($previousmonth, ) = calendar_get_view($calendar, 'minithree', false, true);
-
-        // Current month.
-        $calendar->set_time($current);
-        list($currentmonth, ) = calendar_get_view($calendar, 'minithree', false, true);
-
-        // Next month.
-        $calendar->set_time($next);
-        list($nextmonth, ) = calendar_get_view($calendar, 'minithree', false, true);
-
-        // Reset the time back.
-        $calendar->set_time($current);
-
-        $data = (object) [
-            'previousmonth' => $previousmonth,
-            'currentmonth' => $currentmonth,
-            'nextmonth' => $nextmonth,
-        ];
-
-        $template = 'core_calendar/calendar_threemonth';
-        $content .= $this->render_from_template($template, $data);
-        return $content;
+    public function fake_block_threemonths() {
+        throw new coding_exception(__FUNCTION__ . '() has been removed.');
     }
 
     /**
diff --git a/calendar/templates/calendar_threemonth.mustache b/calendar/templates/calendar_threemonth.mustache
deleted file mode 100644
index 5fc66f7eb47c..000000000000
--- a/calendar/templates/calendar_threemonth.mustache
+++ /dev/null
@@ -1,52 +0,0 @@
-{{!
-    This file is part of Moodle - http://moodle.org/
-
-    Moodle is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    Moodle is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
-}}
-{{!
-    @template core_calendar/calendar_threemonth
-
-    @deprecated since 4.0 MDL-72810.
-    @todo MDL-73117 This will be deleted in Moodle 4.4.
-
-    Calendar view to show three months as a block.
-
-    The purpose of this template is to render a set of three months of calendar_mini in a block.
-
-    Classes required for JS:
-    * none
-
-    Data attributes required for JS:
-    * none
-
-    Example context (json):
-    {
-    }
-}}
-<div id="calendar-multi-{{uniqid}}">
-    {{#previousmonth}}
-        {{> core_calendar/threemonth_month}}
-    {{/previousmonth}}
-    {{#currentmonth}}
-        {{> core_calendar/threemonth_month}}
-    {{/currentmonth}}
-    {{#nextmonth}}
-        {{> core_calendar/threemonth_month}}
-    {{/nextmonth}}
-</div>
-{{#js}}
-require(['jquery', 'core_calendar/calendar_threemonth'], function($, CalendarThreeMonth) {
-    CalendarThreeMonth.init($("#calendar-multi-{{uniqid}}"));
-});
-{{/js}}
diff --git a/calendar/tests/behat/behat_calendar.php b/calendar/tests/behat/behat_calendar.php
index fc53c18233ca..3065ae8fd468 100644
--- a/calendar/tests/behat/behat_calendar.php
+++ b/calendar/tests/behat/behat_calendar.php
@@ -122,16 +122,6 @@ public function i_hover_over_today_in_mini_calendar_block(): void {
         $this->i_hover_over_day_of_this_month_in_mini_calendar_block($todaysday);
     }
 
-    /**
-     * Hover over today in the calendar.
-     *
-     * @Given /^I hover over today in the calendar$/
-     */
-    public function i_hover_over_today_in_the_calendar() {
-        $todaysday = date('j');
-        return $this->i_hover_over_day_of_this_month_in_calendar($todaysday);
-    }
-
     /**
      * Navigate to a specific month in the calendar.
      *
diff --git a/calendar/tests/behat/behat_calendar_deprecated.php b/calendar/tests/behat/behat_calendar_deprecated.php
new file mode 100644
index 000000000000..0fc1a08838b5
--- /dev/null
+++ b/calendar/tests/behat/behat_calendar_deprecated.php
@@ -0,0 +1,59 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+// NOTE: no MOODLE_INTERNAL test here, this file may be required by behat before including /config.php.
+
+require_once(__DIR__ . '/../../../lib/behat/behat_deprecated_base.php');
+
+/**
+ * Steps definitions that are now deprecated and will be removed in the next releases.
+ *
+ * This file only contains the steps that previously were in the behat_*.php files in the SAME DIRECTORY.
+ * When deprecating steps from other components or plugins, create a behat_COMPONENT_deprecated.php
+ * file in the same directory where the steps were defined.
+ *
+ * @package    core_calendar
+ * @category   test
+ * @copyright  2024 Mathew May <mathew.solutions>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class behat_calendar_deprecated extends behat_deprecated_base {
+    /**
+     * Hover over today in the calendar.
+     *
+     * @Given /^I hover over today in the calendar$/
+     *
+     * @deprecated since 4.4 MDL-73117.
+     * @TODO MDL-79721: This will be deleted in Moodle 4.8.
+     */
+    public function i_hover_over_today_in_the_calendar() {
+        $this->deprecated_message('behat_calendar::i_hover_over_today_in_the_calendar');
+        $todaysday = date('j');
+
+        $summarytitle = userdate(time(), get_string('strftimemonthyear'));
+        // The current month table.
+        $currentmonth = "table[descendant::*[self::caption[contains(concat(' ', normalize-space(.), ' '), ' {$summarytitle} ')]]]";
+
+        // Strings for the class cell match.
+        $cellclasses  = "contains(concat(' ', normalize-space(@class), ' '), ' day ')";
+        $daycontains  = "text()[contains(concat(' ', normalize-space(.), ' '), ' {$todaysday} ')]";
+        $daycell      = "td[{$cellclasses}]";
+        $dayofmonth   = "a[{$daycontains}]";
+
+        $xpath = '//' . $currentmonth . '/descendant::' . $daycell . '/' . $dayofmonth;
+        $this->execute("behat_general::i_hover", [$xpath, "xpath_element"]);
+    }
+}
diff --git a/calendar/tests/calendar_event_exporter_test.php b/calendar/tests/calendar_event_exporter_test.php
index 055309216466..e092c4689b30 100644
--- a/calendar/tests/calendar_event_exporter_test.php
+++ b/calendar/tests/calendar_event_exporter_test.php
@@ -80,7 +80,6 @@ public function test_get_timestamp_min_limit($starttime, $min, $expected) {
             ->getMock();
         $reflector = new \ReflectionClass($class);
         $method = $reflector->getMethod('get_timestamp_min_limit');
-        $method->setAccessible(true);
 
         $result = $method->invoke($mock, $starttime, $min);
         $this->assertEquals($expected, $result['mindaytimestamp']);
@@ -137,7 +136,6 @@ public function test_get_timestamp_max_limit($starttime, $max, $expected) {
             ->getMock();
         $reflector = new \ReflectionClass($class);
         $method = $reflector->getMethod('get_timestamp_max_limit');
-        $method->setAccessible(true);
 
         $result = $method->invoke($mock, $starttime, $max);
         $this->assertEquals($expected, $result['maxdaytimestamp']);
diff --git a/calendar/tests/rrule_manager_test.php b/calendar/tests/rrule_manager_test.php
index ed9a3c119943..12b625a27a83 100644
--- a/calendar/tests/rrule_manager_test.php
+++ b/calendar/tests/rrule_manager_test.php
@@ -124,7 +124,6 @@ public function test_parse_rrule() {
         $reflectionclass = new \ReflectionClass($mang);
         foreach ($props as $prop => $expectedval) {
             $rcprop = $reflectionclass->getProperty($prop);
-            $rcprop->setAccessible(true);
             $this->assertEquals($expectedval, $rcprop->getValue($mang));
         }
     }
diff --git a/calendar/upgrade.txt b/calendar/upgrade.txt
index 89855aa40937..28f627b4144e 100644
--- a/calendar/upgrade.txt
+++ b/calendar/upgrade.txt
@@ -5,6 +5,15 @@ information provided here is intended especially for developers.
 * The following previously deprecated methods have been removed and can no longer be used:
   - `calendar_process_subscription_row`
   - `calendar_import_icalendar_events`
+  - `fake_block_threemonths`
+  - `i_click_day_of_this_month_in_calendar`
+  - `i_hover_over_today_in_the_calendar`
+* The following previously deprecated files have been removed and can no longer be used:
+  - `calendar_threemonth.js`
+  - `calendar_threemonth.mustache`
+  - `threemonth_month.mustache`
+* The following have been deprecated:
+  - Behat step definition `i_hover_over_today_in_the_calendar`
 * The event_exporter_base class now returns a field called "branded" indicating whether the module is branded or not.
   All the external functions using the exporter will now return the new field:
   - core_calendar_get_action_events_by_course
diff --git a/communication/provider/matrix/tests/local/command_test.php b/communication/provider/matrix/tests/local/command_test.php
index c255f26ed639..8e540b784101 100644
--- a/communication/provider/matrix/tests/local/command_test.php
+++ b/communication/provider/matrix/tests/local/command_test.php
@@ -281,7 +281,6 @@ public function test_query_parameters(
         );
 
         $execute = new ReflectionMethod($instance, 'execute');
-        $execute->setAccessible(true);
         $execute->invoke($instance, $command);
     }
 
diff --git a/communication/provider/matrix/tests/matrix_client_test.php b/communication/provider/matrix/tests/matrix_client_test.php
index 00680e242adc..a3e8c8950868 100644
--- a/communication/provider/matrix/tests/matrix_client_test.php
+++ b/communication/provider/matrix/tests/matrix_client_test.php
@@ -447,7 +447,6 @@ public function test_command_is_executed(): void {
 
         $rc = new \ReflectionClass($instance);
         $rcm = $rc->getMethod('execute');
-        $rcm->setAccessible(true);
         $result = $rcm->invoke($instance, $command);
 
         $this->assertEquals(200, $result->getStatusCode());
diff --git a/completion/completion_completion.php b/completion/completion_completion.php
index 54adf228420d..47bd4c003f9f 100644
--- a/completion/completion_completion.php
+++ b/completion/completion_completion.php
@@ -179,8 +179,10 @@ public function mark_complete($timecomplete = null) {
         // Notify user.
         $course = get_course($data->course);
         $messagesubject = get_string('coursecompleted', 'completion');
+        $options = new stdClass();
+        $options->context = context_course::instance($course->id);
         $a = [
-            'coursename' => get_course_display_name_for_list($course),
+            'coursename' => format_string(get_course_display_name_for_list($course), true, $options),
             'courselink' => (string) new moodle_url('/course/view.php', array('id' => $course->id)),
         ];
         $messagebody = get_string('coursecompletedmessage', 'completion', $a);
diff --git a/contentbank/tests/contentbank_test.php b/contentbank/tests/contentbank_test.php
index 88a08ed07a9a..6291c2ae70e5 100644
--- a/contentbank/tests/contentbank_test.php
+++ b/contentbank/tests/contentbank_test.php
@@ -568,7 +568,6 @@ public function test_get_contenttypes_with_capability_feature(array $contenttype
 
             // Replace protected singletoninstance reference (core_plugin_manager property) with mock object.
             $ref = new \ReflectionProperty(\core_plugin_manager::class, 'singletoninstance');
-            $ref->setAccessible(true);
             $ref->setValue(null, $pluginmanager);
 
             // Return values of get_plugins_of_type method.
@@ -592,7 +591,6 @@ public function test_get_contenttypes_with_capability_feature(array $contenttype
             // Get access to private property enabledcontenttypes.
             $rc = new \ReflectionClass(\core_contentbank\contentbank::class);
             $rcp = $rc->getProperty('enabledcontenttypes');
-            $rcp->setAccessible(true);
 
             foreach ($contenttypesenabled as $contenttypename) {
                 $plugins["\\contenttype_$contenttypename\\contenttype"] = $contenttypename;
diff --git a/course/format/tests/local/baseactions_test.php b/course/format/tests/local/baseactions_test.php
index 65bc80d9732f..19d05e14332d 100644
--- a/course/format/tests/local/baseactions_test.php
+++ b/course/format/tests/local/baseactions_test.php
@@ -45,7 +45,6 @@ public static function setUpBeforeClass(): void {
     private function get_base_reflection_method(baseactions $baseinstance, string $methodname): ReflectionMethod {
         $reflectionclass = new \reflectionclass($baseinstance);
         $method = $reflectionclass->getMethod($methodname);
-        $method->setAccessible(true);
         return $method;
     }
 
diff --git a/course/tests/category_hooks_test.php b/course/tests/category_hooks_test.php
index 21a73bd91639..b68de7a7eebe 100644
--- a/course/tests/category_hooks_test.php
+++ b/course/tests/category_hooks_test.php
@@ -72,7 +72,6 @@ public function get_mock_category(\core_course_category $category, string $callb
         // This is used to overcome private constructor.
         $reflected = new \ReflectionClass(\core_course_category::class);
         $constructor = $reflected->getConstructor();
-        $constructor->setAccessible(true);
         $constructor->invoke($mockcategory, $category->get_db_record());
 
         return $mockcategory;
diff --git a/course/tests/course_image_cache_test.php b/course/tests/course_image_cache_test.php
index c3fffd79c21c..59b697a5b97a 100644
--- a/course/tests/course_image_cache_test.php
+++ b/course/tests/course_image_cache_test.php
@@ -98,7 +98,6 @@ public function test_getting_data_if_course_is_not_exist() {
     public function test_get_image_url_from_overview_files_return_null_if_no_summary_files_in_the_course() {
         $method = new ReflectionMethod(course_image::class, 'get_image_url_from_overview_files');
         $cache = course_image::get_instance_for_cache(new cache_definition());
-        $method->setAccessible(true);
 
         // Create course without files.
         $course = $this->getDataGenerator()->create_course();
@@ -111,7 +110,6 @@ public function test_get_image_url_from_overview_files_return_null_if_no_summary
     public function test_get_image_url_from_overview_files_returns_null_if_no_summary_images_in_the_course() {
         $method = new ReflectionMethod(course_image::class, 'get_image_url_from_overview_files');
         $cache = course_image::get_instance_for_cache(new cache_definition());
-        $method->setAccessible(true);
 
         // Create course without image files.
         $draftid2 = $this->fill_draft_area(['filename2.zip' => 'Test file contents2']);
@@ -125,7 +123,6 @@ public function test_get_image_url_from_overview_files_returns_null_if_no_summar
     public function test_get_image_url_from_overview_files_returns_url_if_there_is_a_summary_image() {
         $method = new ReflectionMethod(course_image::class, 'get_image_url_from_overview_files');
         $cache = course_image::get_instance_for_cache(new cache_definition());
-        $method->setAccessible(true);
 
         // Create course without one image.
         $draftid1 = $this->fill_draft_area(['filename1.jpg' => file_get_contents(__DIR__ . '/fixtures/image.jpg')]);
@@ -140,7 +137,6 @@ public function test_get_image_url_from_overview_files_returns_url_if_there_is_a
     public function test_get_image_url_from_overview_files_returns_url_of_the_first_image_if_there_are_many_summary_images() {
         $method = new ReflectionMethod(course_image::class, 'get_image_url_from_overview_files');
         $cache = course_image::get_instance_for_cache(new cache_definition());
-        $method->setAccessible(true);
 
         // Create course with two image files.
         $draftid1 = $this->fill_draft_area([
@@ -159,7 +155,6 @@ public function test_get_image_url_from_overview_files_returns_url_of_the_first_
     public function test_get_image_url_from_overview_files_returns_url_of_the_first_image_if_there_are_many_summary_files() {
         $method = new ReflectionMethod(course_image::class, 'get_image_url_from_overview_files');
         $cache = course_image::get_instance_for_cache(new cache_definition());
-        $method->setAccessible(true);
 
         // Create course with two image files and one zip file.
         $draftid1 = $this->fill_draft_area([
diff --git a/course/tests/targets_test.php b/course/tests/targets_test.php
index 9e2e72b9823c..6dc0ad89a5dd 100644
--- a/course/tests/targets_test.php
+++ b/course/tests/targets_test.php
@@ -413,7 +413,6 @@ public function test_core_target_course_completion_samples($coursestart, $course
 
         $class = new \ReflectionClass('\core\analytics\analyser\student_enrolments');
         $method = $class->getMethod('get_all_samples');
-        $method->setAccessible(true);
 
         list($sampleids, $samplesdata) = $method->invoke($analyser, $analysable);
         $target->add_sample_data($samplesdata);
@@ -448,7 +447,6 @@ public function test_core_target_course_completion_active_during_analysis_time($
 
         $class = new \ReflectionClass('\core\analytics\analyser\student_enrolments');
         $method = $class->getMethod('get_all_samples');
-        $method->setAccessible(true);
 
         list($sampleids, $samplesdata) = $method->invoke($analyser, $analysable);
         $target->add_sample_data($samplesdata);
@@ -456,7 +454,6 @@ public function test_core_target_course_completion_active_during_analysis_time($
 
         $reftarget = new \ReflectionObject($target);
         $refmethod = $reftarget->getMethod('calculate_sample');
-        $refmethod->setAccessible(true);
 
         if ($nullcalculation) {
             $this->assertNull($refmethod->invoke($target, $sampleid, $analysable, $starttime, $endtime));
@@ -532,7 +529,6 @@ public function test_core_target_course_competencies_calculate() {
 
         $class = new \ReflectionClass('\core\analytics\analyser\student_enrolments');
         $method = $class->getMethod('get_all_samples');
-        $method->setAccessible(true);
 
         list($sampleids, $samplesdata) = $method->invoke($analyser, $analysable);
         $target->add_sample_data($samplesdata);
@@ -540,7 +536,6 @@ public function test_core_target_course_competencies_calculate() {
 
         $class = new \ReflectionClass('\core_course\analytics\target\course_competencies');
         $method = $class->getMethod('calculate_sample');
-        $method->setAccessible(true);
 
         // Method calculate_sample() returns 1 when the user has not achieved all the competencies assigned to the course.
         $this->assertEquals(1, $method->invoke($target, $sampleid, $analysable));
@@ -630,14 +625,12 @@ public function test_core_target_course_gradetopass_calculate() {
 
         $class = new \ReflectionClass('\core\analytics\analyser\student_enrolments');
         $method = $class->getMethod('get_all_samples');
-        $method->setAccessible(true);
 
         list($sampleids, $samplesdata) = $method->invoke($analyser, $analysable);
         $target->add_sample_data($samplesdata);
 
         $class = new \ReflectionClass('\core_course\analytics\target\course_gradetopass');
         $method = $class->getMethod('calculate_sample');
-        $method->setAccessible(true);
 
         // Verify all the expectations are fulfilled.
         foreach ($sampleids as $sampleid => $key) {
diff --git a/customfield/tests/generator/lib.php b/customfield/tests/generator/lib.php
index eae8490154f0..6da6bf30f828 100644
--- a/customfield/tests/generator/lib.php
+++ b/customfield/tests/generator/lib.php
@@ -156,7 +156,6 @@ public function add_instance_data(field_controller $field, int $instanceid, $val
 
         $rc = new ReflectionClass(get_class($data));
         $rcm = $rc->getMethod('get_form_element_name');
-        $rcm->setAccessible(true);
         $formelementname = $rcm->invokeArgs($data, []);
         $record = (object)[$formelementname => $value];
         $data->instance_form_save($record);
diff --git a/enrol/ldap/tests/ldap_test.php b/enrol/ldap/tests/ldap_test.php
index c918b19f0293..7f93d763593f 100644
--- a/enrol/ldap/tests/ldap_test.php
+++ b/enrol/ldap/tests/ldap_test.php
@@ -513,7 +513,6 @@ public function test_objectclass_fetch($usertype, $expected) {
         // Use reflection to sneak a look at the plugin.
         $rc = new \ReflectionClass('enrol_ldap_plugin');
         $rcp = $rc->getProperty('userobjectclass');
-        $rcp->setAccessible(true);
 
         // Fetch the current userobjectclass value.
         $value = $rcp->getValue($instance);
diff --git a/enrol/lti/tests/helper_test.php b/enrol/lti/tests/helper_test.php
index 90fc6c09e14f..a3553183415c 100644
--- a/enrol/lti/tests/helper_test.php
+++ b/enrol/lti/tests/helper_test.php
@@ -477,7 +477,6 @@ public function set_xpath_provider() {
     public function test_set_xpath($parameters, $expected) {
         $helper = new \ReflectionClass('enrol_lti\\helper');
         $function = $helper->getMethod('set_xpath');
-        $function->setAccessible(true);
 
         $document = new \DOMDocument();
         $document->load(realpath(__DIR__ . '/fixtures/input.xml'));
@@ -502,7 +501,6 @@ public function test_set_xpath_incorrect_xpath() {
         ];
         $helper = new \ReflectionClass('enrol_lti\\helper');
         $function = $helper->getMethod('set_xpath');
-        $function->setAccessible(true);
 
         $document = new \DOMDocument();
         $document->load(realpath(__DIR__ . '/fixtures/input.xml'));
diff --git a/files/tests/converter_test.php b/files/tests/converter_test.php
index d54d4b171aeb..ae766c8856cd 100644
--- a/files/tests/converter_test.php
+++ b/files/tests/converter_test.php
@@ -223,7 +223,6 @@ public function test_get_document_converter_classes_no_plugins() {
         $converter->method('get_enabled_plugins')->willReturn([]);
 
         $method = new ReflectionMethod(\core_files\converter::class, 'get_document_converter_classes');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($converter, ['docx', 'pdf']);
         $this->assertEmpty($result);
     }
@@ -238,7 +237,6 @@ public function test_get_document_converter_classes_plugin_class_not_found() {
             ]);
 
         $method = new ReflectionMethod(\core_files\converter::class, 'get_document_converter_classes');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($converter, ['docx', 'pdf']);
         $this->assertEmpty($result);
     }
@@ -257,7 +255,6 @@ public function test_get_document_converter_classes_plugin_class_requirements_no
             ]);
 
         $method = new ReflectionMethod(\core_files\converter::class, 'get_document_converter_classes');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($converter, ['docx', 'pdf']);
         $this->assertEmpty($result);
     }
@@ -276,7 +273,6 @@ public function test_get_document_converter_classes_plugin_class_met_not_support
             ]);
 
         $method = new ReflectionMethod(\core_files\converter::class, 'get_document_converter_classes');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($converter, ['docx', 'pdf']);
         $this->assertEmpty($result);
     }
@@ -296,7 +292,6 @@ public function test_get_document_converter_classes_plugin_class_met_and_support
             ]);
 
         $method = new ReflectionMethod(\core_files\converter::class, 'get_document_converter_classes');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($converter, ['docx', 'pdf']);
         $this->assertCount(1, $result);
         $this->assertNotFalse(array_search($classname, $result));
@@ -681,7 +676,6 @@ public function test_start_conversion_two_supported() {
      */
     public function test_get_next_converter_no_converters() {
         $rcm = new \ReflectionMethod(converter::class, 'get_next_converter');
-        $rcm->setAccessible(true);
 
         $converter = new \core_files\converter();
         $result = $rcm->invoke($converter, [], null);
@@ -694,7 +688,6 @@ public function test_get_next_converter_no_converters() {
      */
     public function test_get_next_converter_only_converters() {
         $rcm = new \ReflectionMethod(converter::class, 'get_next_converter');
-        $rcm->setAccessible(true);
 
         $converter = new converter();
         $result = $rcm->invoke($converter, ['example'], 'example');
@@ -707,7 +700,6 @@ public function test_get_next_converter_only_converters() {
      */
     public function test_get_next_converter_last_converters() {
         $rcm = new \ReflectionMethod(converter::class, 'get_next_converter');
-        $rcm->setAccessible(true);
 
         $converter = new converter();
         $result = $rcm->invoke($converter, ['foo', 'example'], 'example');
@@ -720,7 +712,6 @@ public function test_get_next_converter_last_converters() {
      */
     public function test_get_next_converter_middle_converters() {
         $rcm = new \ReflectionMethod(converter::class, 'get_next_converter');
-        $rcm->setAccessible(true);
 
         $converter = new converter();
         $result = $rcm->invoke($converter, ['foo', 'bar', 'baz', 'example'], 'bar');
@@ -733,7 +724,6 @@ public function test_get_next_converter_middle_converters() {
      */
     public function test_get_next_converter_first() {
         $rcm = new \ReflectionMethod(converter::class, 'get_next_converter');
-        $rcm->setAccessible(true);
 
         $converter = new converter();
         $result = $rcm->invoke($converter, ['foo', 'bar', 'baz', 'example']);
diff --git a/grade/report/user/tests/lib_test.php b/grade/report/user/tests/lib_test.php
index c27caa4c02f7..59bb6dc5fe6c 100644
--- a/grade/report/user/tests/lib_test.php
+++ b/grade/report/user/tests/lib_test.php
@@ -69,7 +69,6 @@ public function test_gradereport_user_myprofile_navigation() {
         gradereport_user_myprofile_navigation($this->tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayHasKey('grade', $nodes->getValue($this->tree));
     }
 
@@ -84,7 +83,6 @@ public function test_gradereport_user_myprofile_navigation_without_permission()
         gradereport_user_myprofile_navigation($this->tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayNotHasKey('grade', $nodes->getValue($this->tree));
     }
 }
diff --git a/h5p/tests/editor_test.php b/h5p/tests/editor_test.php
index 74fe952b91f8..d2f1fc763813 100644
--- a/h5p/tests/editor_test.php
+++ b/h5p/tests/editor_test.php
@@ -113,7 +113,6 @@ public function test_set_content() {
         // Call the method. We need the id of the new H5P content.
         $rc = new \ReflectionClass(player::class);
         $rcp = $rc->getProperty('h5pid');
-        $rcp->setAccessible(true);
         $h5pid = $rcp->getValue($h5pplayer);
 
         $editor = new editor();
@@ -122,7 +121,6 @@ public function test_set_content() {
         // Check we get the H5P content.
         $rc = new \ReflectionClass(editor::class);
         $rcp = $rc->getProperty('oldcontent');
-        $rcp->setAccessible(true);
         $oldcontent = $rcp->getValue($editor);
 
         $core = (new factory)->get_core();
@@ -130,7 +128,6 @@ public function test_set_content() {
 
         // Check we get the file of the H5P content.
         $rcp = $rc->getProperty('oldfile');
-        $rcp->setAccessible(true);
         $oldfile = $rcp->getValue($editor);
 
         $this->assertSame($file->get_contenthash(), $oldfile->get_contenthash());
@@ -154,7 +151,6 @@ public function test_set_library() {
         // Check that the library has the right value.
         $rc = new \ReflectionClass(editor::class);
         $rcp = $rc->getProperty('library');
-        $rcp->setAccessible(true);
         $actual = $rcp->getValue($editor);
 
         $this->assertSame($library, $actual);
@@ -171,7 +167,6 @@ public function test_set_library() {
         ];
 
         $rcp = $rc->getProperty('filearea');
-        $rcp->setAccessible(true);
         $actual = $rcp->getValue($editor);
 
         $this->assertEquals($expected, $actual);
@@ -198,8 +193,6 @@ public function test_add_editor_to_form() {
         $rc = new \ReflectionClass(page_requirements_manager::class);
         $rcp = $rc->getProperty('cssurls');
         $rcp2 = $rc->getProperty('jsincludes');
-        $rcp->setAccessible(true);
-        $rcp2->setAccessible(true);
         $actualcss = array_keys($rcp->getValue($PAGE->requires));
         $actualjs = array_keys($rcp2->getValue($PAGE->requires)['head']);
         $cachebuster = helper::get_cache_buster();
diff --git a/h5p/tests/file_storage_test.php b/h5p/tests/file_storage_test.php
index cbf0ee5a13eb..a1f9b5c290a5 100644
--- a/h5p/tests/file_storage_test.php
+++ b/h5p/tests/file_storage_test.php
@@ -69,11 +69,9 @@ protected function setUp(): void {
         // Get value of protected properties.
         $h5p_fs_rc = new \ReflectionClass(file_storage::class);
         $h5p_file_storage_context = $h5p_fs_rc->getProperty('context');
-        $h5p_file_storage_context->setAccessible(true);
         $this->h5p_fs_context = $h5p_file_storage_context->getValue($this->h5p_file_storage);
 
         $h5p_file_storage_fs = $h5p_fs_rc->getProperty('fs');
-        $h5p_file_storage_fs->setAccessible(true);
         $this->h5p_fs_fs = $h5p_file_storage_fs->getValue($this->h5p_file_storage);
     }
 
@@ -625,7 +623,6 @@ public function test_get_file(): void {
 
         // Set get_file method accessibility.
         $method = new ReflectionMethod(file_storage::class, 'get_file');
-        $method->setAccessible(true);
 
         $contentfile = $method->invoke(new file_storage(), file_storage::CONTENT_FILEAREA, $h5pcontentid, $file);
 
@@ -668,7 +665,6 @@ public function test_move_file(): void {
 
         // Set get_file method accessibility.
         $method = new ReflectionMethod(file_storage::class, 'move_file');
-        $method->setAccessible(true);
 
         $method->invoke(new file_storage(), $file, $h5pcontentid);
 
diff --git a/h5p/tests/generator/lib.php b/h5p/tests/generator/lib.php
index 3bfefc0df85f..79edfec2e12e 100644
--- a/h5p/tests/generator/lib.php
+++ b/h5p/tests/generator/lib.php
@@ -554,7 +554,6 @@ public function create_export_file(string $filename, int $contextid,
         // Call the method. We need the id of the new H5P content.
         $rc = new \ReflectionClass(player::class);
         $rcp = $rc->getProperty('h5pid');
-        $rcp->setAccessible(true);
         $h5pid = $rcp->getValue($h5pplayer);
 
         // Get the info export file.
diff --git a/lang/en/admin.php b/lang/en/admin.php
index 9f7ea6d93f49..624f5604f053 100644
--- a/lang/en/admin.php
+++ b/lang/en/admin.php
@@ -1314,6 +1314,7 @@
 $string['sixtyfourbitswarning'] = 'It has been detected that your site is not using a 64-bit PHP version. It is recommended that you upgrade your site to ensure future compatibility.';
 $string['slasharguments'] = 'Use slash arguments';
 $string['slashargumentswarning'] = 'It is recommended that the use of slash arguments is enabled. In future it will be required. For more details, see the documentation <a href="https://docs.moodle.org/en/admin/environment/slasharguments">Using slash arguments</a>.';
+$string['smallscreensonly'] = 'Small screens only';
 $string['smtp'] = 'SMTP';
 $string['smtpauthtype'] = 'SMTP Auth Type';
 $string['smtpdetail'] = 'Simple Mail Transfer Protocol (SMTP) settings for sending email.';
diff --git a/lang/en/auth.php b/lang/en/auth.php
index c73816c063c1..2a42ae444a10 100644
--- a/lang/en/auth.php
+++ b/lang/en/auth.php
@@ -41,6 +41,8 @@
 $string['auth_changingemailaddress'] = 'You have requested a change of email address, from {$a->oldemail} to {$a->newemail}. For security reasons, we are sending you an email message at the new address to confirm that it belongs to you. Your email address will be updated as soon as you open the URL sent to you in that message.';
 $string['authinstructions'] = 'Leave this blank for the default login instructions to be displayed on the login page. If you want to provide custom login instructions, enter them here.';
 $string['auth_invalidnewemailkey'] = 'Error: if you are trying to confirm a change of email address, you may have made a mistake in copying the URL we sent you by email. Please copy the address and try again.';
+$string['auth_loginpasswordtoggle'] = 'Password visibility toggle';
+$string['auth_loginpasswordtoggle_desc'] = 'Add an icon to the password field on the login screen that allows users to show or hide their entered password.';
 $string['auth_loginrecaptcha'] = 'Enable reCAPTCHA for login';
 $string['auth_loginrecaptcha_desc'] = 'Add a visual/audio confirmation form element to the login page. This reduces the risk of unwarranted login attempts. See <a target="_blank" href="https://www.google.com/recaptcha">Google reCAPTCHA</a> for more details. ';
 $string['auth_multiplehosts'] = 'Multiple hosts OR addresses can be specified (eg host1.com;host2.com;host3.com) or (eg xxx.xxx.xxx.xxx;xxx.xxx.xxx.xxx)';
diff --git a/lang/en/courseformat.php b/lang/en/courseformat.php
index c6d44e39964d..b6135aaeb065 100644
--- a/lang/en/courseformat.php
+++ b/lang/en/courseformat.php
@@ -47,6 +47,7 @@
 $string['cm_show_feedback'] = '{$a->name} is now shown.';
 $string['cm_show_feedback_batch'] = 'The selected {$a->count} activities are now shown.';
 $string['cm_stealth_feedback'] = '{$a->name} is now available but not shown on the course page.';
+$string['cm_stealth_feedback_batch'] = 'The selected {$a->count} activities are now available but not shown on the course page.';
 $string['cm_visiblegroups_feedback'] = '{$a->name} group mode changed to Visible groups.';
 $string['cmavailability'] = 'Activity availability';
 $string['cmdelete_info'] = 'This will delete {$a->name} and any user data it contains.';
diff --git a/lang/en/form.php b/lang/en/form.php
index 440997cb63ee..0ddade386d02 100644
--- a/lang/en/form.php
+++ b/lang/en/form.php
@@ -87,5 +87,6 @@
 $string['time'] = 'Time';
 $string['timeunit'] = 'Time unit';
 $string['timing'] = 'Timing';
+$string['togglesensitive'] = 'Toggle sensitive';
 $string['unmaskpassword'] = 'Unmask';
 $string['year'] = 'Year';
diff --git a/lib/amd/build/togglesensitive.min.js b/lib/amd/build/togglesensitive.min.js
new file mode 100644
index 000000000000..7a14a4543d42
--- /dev/null
+++ b/lib/amd/build/togglesensitive.min.js
@@ -0,0 +1,10 @@
+define("core/togglesensitive",["exports","core/pagehelpers","core/templates","core/pending","core/prefetch","core/notification","core_form/events"],(function(_exports,_pagehelpers,_templates,_pending,_prefetch,_notification,_events){function _interopRequireDefault(obj){return obj&&obj.__esModule?obj:{default:obj}}
+/**
+   * JS module for toggling the sensitive input visibility (e.g. passwords, keys).
+   *
+   * @module     core/togglesensitive
+   * @copyright  2023 David Woloszyn <david.woloszyn@moodle.com>
+   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+   */Object.defineProperty(_exports,"__esModule",{value:!0}),_exports.init=void 0,_templates=_interopRequireDefault(_templates),_pending=_interopRequireDefault(_pending),_prefetch=_interopRequireDefault(_prefetch),_notification=_interopRequireDefault(_notification);const SELECTORS_BUTTON=".toggle-sensitive-btn",PIX_EYE="t/hide",PIX_EYE_SLASH="t/show";let sensitiveElementId,smallScreensOnly;_exports.init=function(elementId){let isSmallScreensOnly=arguments.length>1&&void 0!==arguments[1]&&arguments[1];const sensitiveInput=document.getElementById(elementId);null!==sensitiveInput&&(sensitiveElementId=elementId,smallScreensOnly=isSmallScreensOnly,_prefetch.default.prefetchTemplate("core/form_input_toggle_sensitive"),renderSensitiveToggle(sensitiveInput),registerListenerEvents())};const renderSensitiveToggle=sensitiveInput=>{_templates.default.render("core/form_input_toggle_sensitive",{smallscreensonly:smallScreensOnly,sensitiveinput:sensitiveInput.outerHTML}).then((html=>{sensitiveInput.outerHTML=html,(0,_events.notifyFieldStructureChanged)(sensitiveInput.id)})).catch(_notification.default.exception)},registerListenerEvents=()=>{document.addEventListener("click",handleButtonInteraction),smallScreensOnly&&window.addEventListener("resize",handleScreenResizing)},handleButtonInteraction=event=>{const toggleButton=event.target.closest(SELECTORS_BUTTON);if(toggleButton){const sensitiveInput=document.getElementById(sensitiveElementId);sensitiveInput&&toggleSensitiveVisibility(sensitiveInput,toggleButton)}},handleScreenResizing=()=>{if(!(0,_pagehelpers.isExtraSmall)()){const sensitiveInput=document.getElementById(sensitiveElementId);if(sensitiveInput){const toggleButton=sensitiveInput.parentNode.querySelector(SELECTORS_BUTTON);toggleButton&&toggleSensitiveVisibility(sensitiveInput,toggleButton,!0)}}},toggleSensitiveVisibility=function(sensitiveInput,toggleButton){let force=arguments.length>2&&void 0!==arguments[2]&&arguments[2];const pendingPromise=new _pending.default("core/togglesensitive:toggle");let type,icon;!0===force?(type="password",icon=PIX_EYE):(type="password"===sensitiveInput.getAttribute("type")?"text":"password",icon="password"===sensitiveInput.getAttribute("type")?PIX_EYE_SLASH:PIX_EYE),sensitiveInput.setAttribute("type",type),_templates.default.renderPix(icon,"core").then((icon=>{toggleButton.innerHTML=icon,pendingPromise.resolve()})).catch(_notification.default.exception)}}));
+
+//# sourceMappingURL=togglesensitive.min.js.map
\ No newline at end of file
diff --git a/lib/amd/build/togglesensitive.min.js.map b/lib/amd/build/togglesensitive.min.js.map
new file mode 100644
index 000000000000..dfedebd5e21c
--- /dev/null
+++ b/lib/amd/build/togglesensitive.min.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"togglesensitive.min.js","sources":["../src/togglesensitive.js"],"sourcesContent":["// This file is part of Moodle - http://moodle.org/\n//\n// Moodle is free software: you can redistribute it and/or modify\n// it under the terms of the GNU General Public License as published by\n// the Free Software Foundation, either version 3 of the License, or\n// (at your option) any later version.\n//\n// Moodle is distributed in the hope that it will be useful,\n// but WITHOUT ANY WARRANTY; without even the implied warranty of\n// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n// GNU General Public License for more details.\n//\n// You should have received a copy of the GNU General Public License\n// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.\n\n/**\n * JS module for toggling the sensitive input visibility (e.g. passwords, keys).\n *\n * @module     core/togglesensitive\n * @copyright  2023 David Woloszyn <david.woloszyn@moodle.com>\n * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later\n */\n\nimport {isExtraSmall} from 'core/pagehelpers';\nimport Templates from 'core/templates';\nimport Pending from 'core/pending';\nimport Prefetch from 'core/prefetch';\nimport Notification from 'core/notification';\nimport {notifyFieldStructureChanged} from 'core_form/events';\n\nconst SELECTORS = {\n    BUTTON: '.toggle-sensitive-btn',\n    ICON: '.toggle-sensitive-btn .icon',\n};\n\nconst PIX = {\n    EYE: 't/hide',\n    EYE_SLASH: 't/show',\n};\n\nlet sensitiveElementId;\nlet smallScreensOnly;\n\n/**\n * Entrypoint of the js.\n *\n * @method init\n * @param {String} elementId Form button element.\n * @param {boolean} isSmallScreensOnly Is this for small screens only?\n */\nexport const init = (elementId, isSmallScreensOnly = false) => {\n    const sensitiveInput = document.getElementById(elementId);\n    if (sensitiveInput === null) {\n        // Exit early if invalid element id passed.\n        return;\n    }\n    sensitiveElementId = elementId;\n    smallScreensOnly = isSmallScreensOnly;\n    Prefetch.prefetchTemplate('core/form_input_toggle_sensitive');\n    // Render the sensitive input with a toggle button.\n    renderSensitiveToggle(sensitiveInput);\n    // Register event listeners.\n    registerListenerEvents();\n};\n\n/**\n * Render the new input html with toggle button and update the incoming html.\n *\n * @method renderSensitiveToggle\n * @param {HTMLElement} sensitiveInput HTML element for the sensitive input.\n */\nconst renderSensitiveToggle = (sensitiveInput) => {\n    Templates.render(\n        'core/form_input_toggle_sensitive',\n        {\n            smallscreensonly: smallScreensOnly,\n            sensitiveinput: sensitiveInput.outerHTML,\n        }\n    ).then((html) => {\n        sensitiveInput.outerHTML = html;\n        // Dispatch the event indicating the sensitive input has changed.\n        notifyFieldStructureChanged(sensitiveInput.id);\n        return;\n    }).catch(Notification.exception);\n};\n\n/**\n * Register event listeners.\n *\n * @method registerListenerEvents\n */\nconst registerListenerEvents = () => {\n    // Toggle the sensitive input visibility when interacting with the toggle button.\n    document.addEventListener('click', handleButtonInteraction);\n    // For small screens only, hide all sensitive inputs when the screen is enlarged.\n    if (smallScreensOnly) {\n        window.addEventListener('resize', handleScreenResizing);\n    }\n};\n\n/**\n * Handle events trigger by interacting with the toggle button.\n *\n * @method handleButtonInteraction\n * @param {Event} event The button event.\n */\nconst handleButtonInteraction = (event) => {\n    const toggleButton = event.target.closest(SELECTORS.BUTTON);\n    if (toggleButton) {\n        const sensitiveInput = document.getElementById(sensitiveElementId);\n        if (sensitiveInput) {\n            toggleSensitiveVisibility(sensitiveInput, toggleButton);\n        }\n    }\n};\n\n/**\n * Handle events trigger by resizing the screen.\n *\n * @method handleScreenResizing\n */\nconst handleScreenResizing = () => {\n    if (!isExtraSmall()) {\n        const sensitiveInput = document.getElementById(sensitiveElementId);\n        if (sensitiveInput) {\n            const toggleButton = sensitiveInput.parentNode.querySelector(SELECTORS.BUTTON);\n            if (toggleButton) {\n                toggleSensitiveVisibility(sensitiveInput, toggleButton, true);\n            }\n        }\n    }\n};\n\n/**\n * Toggle the sensitive input visibility and its associated icon.\n *\n * @method toggleSensitiveVisibility\n * @param {HTMLInputElement} sensitiveInput The sensitive input element.\n * @param {HTMLElement} toggleButton The toggle button.\n * @param {boolean} force Force the input back to password type.\n */\nconst toggleSensitiveVisibility = (sensitiveInput, toggleButton, force = false) => {\n    const pendingPromise = new Pending('core/togglesensitive:toggle');\n    let type;\n    let icon;\n    if (force === true) {\n        type = 'password';\n        icon = PIX.EYE;\n    } else {\n        type = sensitiveInput.getAttribute('type') === 'password' ? 'text' : 'password';\n        icon = sensitiveInput.getAttribute('type') === 'password' ? PIX.EYE_SLASH : PIX.EYE;\n    }\n    sensitiveInput.setAttribute('type', type);\n    Templates.renderPix(icon, 'core').then((icon) => {\n        toggleButton.innerHTML = icon;\n        pendingPromise.resolve();\n        return;\n    }).catch(Notification.exception);\n};\n"],"names":["SELECTORS","PIX","sensitiveElementId","smallScreensOnly","elementId","isSmallScreensOnly","sensitiveInput","document","getElementById","prefetchTemplate","renderSensitiveToggle","registerListenerEvents","render","smallscreensonly","sensitiveinput","outerHTML","then","html","id","catch","Notification","exception","addEventListener","handleButtonInteraction","window","handleScreenResizing","event","toggleButton","target","closest","toggleSensitiveVisibility","parentNode","querySelector","force","pendingPromise","Pending","type","icon","getAttribute","setAttribute","renderPix","innerHTML","resolve"],"mappings":";;;;;;;gRA8BMA,iBACM,wBAINC,QACG,SADHA,cAES,aAGXC,mBACAC,+BASgB,SAACC,eAAWC,iFACtBC,eAAiBC,SAASC,eAAeJ,WACxB,OAAnBE,iBAIJJ,mBAAqBE,UACrBD,iBAAmBE,qCACVI,iBAAiB,oCAE1BC,sBAAsBJ,gBAEtBK,iCASED,sBAAyBJ,oCACjBM,OACN,mCACA,CACIC,iBAAkBV,iBAClBW,eAAgBR,eAAeS,YAErCC,MAAMC,OACJX,eAAeS,UAAYE,6CAECX,eAAeY,OAE5CC,MAAMC,sBAAaC,YAQpBV,uBAAyB,KAE3BJ,SAASe,iBAAiB,QAASC,yBAE/BpB,kBACAqB,OAAOF,iBAAiB,SAAUG,uBAUpCF,wBAA2BG,cACvBC,aAAeD,MAAME,OAAOC,QAAQ7B,qBACtC2B,aAAc,OACRrB,eAAiBC,SAASC,eAAeN,oBAC3CI,gBACAwB,0BAA0BxB,eAAgBqB,gBAUhDF,qBAAuB,UACpB,+BAAgB,OACXnB,eAAiBC,SAASC,eAAeN,uBAC3CI,eAAgB,OACVqB,aAAerB,eAAeyB,WAAWC,cAAchC,kBACzD2B,cACAG,0BAA0BxB,eAAgBqB,cAAc,MAclEG,0BAA4B,SAACxB,eAAgBqB,kBAAcM,oEACvDC,eAAiB,IAAIC,iBAAQ,mCAC/BC,KACAC,MACU,IAAVJ,OACAG,KAAO,WACPC,KAAOpC,UAEPmC,KAA+C,aAAxC9B,eAAegC,aAAa,QAAyB,OAAS,WACrED,KAA+C,aAAxC/B,eAAegC,aAAa,QAAyBrC,cAAgBA,SAEhFK,eAAeiC,aAAa,OAAQH,yBAC1BI,UAAUH,KAAM,QAAQrB,MAAMqB,OACpCV,aAAac,UAAYJ,KACzBH,eAAeQ,aAEhBvB,MAAMC,sBAAaC"}
\ No newline at end of file
diff --git a/lib/amd/src/togglesensitive.js b/lib/amd/src/togglesensitive.js
new file mode 100644
index 000000000000..19d2bf03783e
--- /dev/null
+++ b/lib/amd/src/togglesensitive.js
@@ -0,0 +1,159 @@
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * JS module for toggling the sensitive input visibility (e.g. passwords, keys).
+ *
+ * @module     core/togglesensitive
+ * @copyright  2023 David Woloszyn <david.woloszyn@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+import {isExtraSmall} from 'core/pagehelpers';
+import Templates from 'core/templates';
+import Pending from 'core/pending';
+import Prefetch from 'core/prefetch';
+import Notification from 'core/notification';
+import {notifyFieldStructureChanged} from 'core_form/events';
+
+const SELECTORS = {
+    BUTTON: '.toggle-sensitive-btn',
+    ICON: '.toggle-sensitive-btn .icon',
+};
+
+const PIX = {
+    EYE: 't/hide',
+    EYE_SLASH: 't/show',
+};
+
+let sensitiveElementId;
+let smallScreensOnly;
+
+/**
+ * Entrypoint of the js.
+ *
+ * @method init
+ * @param {String} elementId Form button element.
+ * @param {boolean} isSmallScreensOnly Is this for small screens only?
+ */
+export const init = (elementId, isSmallScreensOnly = false) => {
+    const sensitiveInput = document.getElementById(elementId);
+    if (sensitiveInput === null) {
+        // Exit early if invalid element id passed.
+        return;
+    }
+    sensitiveElementId = elementId;
+    smallScreensOnly = isSmallScreensOnly;
+    Prefetch.prefetchTemplate('core/form_input_toggle_sensitive');
+    // Render the sensitive input with a toggle button.
+    renderSensitiveToggle(sensitiveInput);
+    // Register event listeners.
+    registerListenerEvents();
+};
+
+/**
+ * Render the new input html with toggle button and update the incoming html.
+ *
+ * @method renderSensitiveToggle
+ * @param {HTMLElement} sensitiveInput HTML element for the sensitive input.
+ */
+const renderSensitiveToggle = (sensitiveInput) => {
+    Templates.render(
+        'core/form_input_toggle_sensitive',
+        {
+            smallscreensonly: smallScreensOnly,
+            sensitiveinput: sensitiveInput.outerHTML,
+        }
+    ).then((html) => {
+        sensitiveInput.outerHTML = html;
+        // Dispatch the event indicating the sensitive input has changed.
+        notifyFieldStructureChanged(sensitiveInput.id);
+        return;
+    }).catch(Notification.exception);
+};
+
+/**
+ * Register event listeners.
+ *
+ * @method registerListenerEvents
+ */
+const registerListenerEvents = () => {
+    // Toggle the sensitive input visibility when interacting with the toggle button.
+    document.addEventListener('click', handleButtonInteraction);
+    // For small screens only, hide all sensitive inputs when the screen is enlarged.
+    if (smallScreensOnly) {
+        window.addEventListener('resize', handleScreenResizing);
+    }
+};
+
+/**
+ * Handle events trigger by interacting with the toggle button.
+ *
+ * @method handleButtonInteraction
+ * @param {Event} event The button event.
+ */
+const handleButtonInteraction = (event) => {
+    const toggleButton = event.target.closest(SELECTORS.BUTTON);
+    if (toggleButton) {
+        const sensitiveInput = document.getElementById(sensitiveElementId);
+        if (sensitiveInput) {
+            toggleSensitiveVisibility(sensitiveInput, toggleButton);
+        }
+    }
+};
+
+/**
+ * Handle events trigger by resizing the screen.
+ *
+ * @method handleScreenResizing
+ */
+const handleScreenResizing = () => {
+    if (!isExtraSmall()) {
+        const sensitiveInput = document.getElementById(sensitiveElementId);
+        if (sensitiveInput) {
+            const toggleButton = sensitiveInput.parentNode.querySelector(SELECTORS.BUTTON);
+            if (toggleButton) {
+                toggleSensitiveVisibility(sensitiveInput, toggleButton, true);
+            }
+        }
+    }
+};
+
+/**
+ * Toggle the sensitive input visibility and its associated icon.
+ *
+ * @method toggleSensitiveVisibility
+ * @param {HTMLInputElement} sensitiveInput The sensitive input element.
+ * @param {HTMLElement} toggleButton The toggle button.
+ * @param {boolean} force Force the input back to password type.
+ */
+const toggleSensitiveVisibility = (sensitiveInput, toggleButton, force = false) => {
+    const pendingPromise = new Pending('core/togglesensitive:toggle');
+    let type;
+    let icon;
+    if (force === true) {
+        type = 'password';
+        icon = PIX.EYE;
+    } else {
+        type = sensitiveInput.getAttribute('type') === 'password' ? 'text' : 'password';
+        icon = sensitiveInput.getAttribute('type') === 'password' ? PIX.EYE_SLASH : PIX.EYE;
+    }
+    sensitiveInput.setAttribute('type', type);
+    Templates.renderPix(icon, 'core').then((icon) => {
+        toggleButton.innerHTML = icon;
+        pendingPromise.resolve();
+        return;
+    }).catch(Notification.exception);
+};
diff --git a/lib/behat/classes/named_selector.php b/lib/behat/classes/named_selector.php
index e683ffcf2913..b390b7590942 100644
--- a/lib/behat/classes/named_selector.php
+++ b/lib/behat/classes/named_selector.php
@@ -58,7 +58,6 @@ public function register_component_selector(string $component, behat_component_n
         // This is due to an API limitation in Mink.
         $rc = new \ReflectionClass(\Behat\Mink\Selector\NamedSelector::class);
         $r = $rc->getProperty('replacements');
-        $r->setAccessible(true);
         $replacements = $r->getValue($this);
 
         $selectorxpath = strtr($selector->get_combined_xpath(), $replacements);
@@ -77,7 +76,6 @@ public function register_replacement(string $component, behat_component_named_re
         // This is due to an API limitation in Mink.
         $rc = new \ReflectionClass(\Behat\Mink\Selector\NamedSelector::class);
         $r = $rc->getProperty('replacements');
-        $r->setAccessible(true);
         $existing = $r->getValue($this);
 
         $from = $replacement->get_from($component);
diff --git a/lib/classes/deprecated.php b/lib/classes/attribute/deprecated.php
similarity index 79%
rename from lib/classes/deprecated.php
rename to lib/classes/attribute/deprecated.php
index deb278abe94b..c68317bdf397 100644
--- a/lib/classes/deprecated.php
+++ b/lib/classes/attribute/deprecated.php
@@ -14,9 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
-namespace core;
-
-use Attribute;
+namespace core\attribute;
 
 /**
  * Attribute to describe a deprecated item.
@@ -25,7 +23,7 @@
  * @copyright  2023 Andrew Lyons <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
-#[Attribute]
+#[\Attribute]
 class deprecated {
     /**
      * A deprecated item.
@@ -34,20 +32,25 @@ class deprecated {
      *
      * Note: The mere presence of the attribute does not do anything. It must be checked by some part of the code.
      *
-     * @param mixed $descriptor A brief descriptor of the thing that was deprecated.
+     * @param null|string $replacement Any replacement for the deprecated thing
      * @param null|string $since When it was deprecated
      * @param null|string $reason Why it was deprecated
-     * @param null|string $replacement Any replacement for the deprecated thing
      * @param null|string $mdl Link to the Moodle Tracker issue for more information
+     * @param bool $final Whether this is a final deprecation
+     * @param bool $emit Whether to emit a deprecation warning
      */
     public function __construct(
-        public readonly mixed $descriptor,
+        public readonly ?string $replacement,
         public readonly ?string $since = null,
         public readonly ?string $reason = null,
-        public readonly ?string $replacement = null,
         public readonly ?string $mdl = null,
         public readonly bool $final = false,
         public readonly bool $emit = true,
     ) {
+        if ($replacement === null && $reason === null && $mdl === null) {
+            throw new \coding_exception(
+                'A deprecated item which is not deprecated must provide a reason, or an issue number.',
+            );
+        }
     }
 }
diff --git a/lib/classes/attribute/deprecated_with_reference.php b/lib/classes/attribute/deprecated_with_reference.php
new file mode 100644
index 000000000000..751cd8f111ec
--- /dev/null
+++ b/lib/classes/attribute/deprecated_with_reference.php
@@ -0,0 +1,58 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+namespace core\attribute;
+
+/**
+ * Attribute to describe a deprecated item which contains a reference to the owning feature.
+ *
+ * @package    core
+ * @copyright  2023 Andrew Lyons <andrew@nicols.co.uk>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class deprecated_with_reference extends deprecated {
+    /**
+     * A deprecated item which also includes a reference to the owning feature.
+     *
+     * This attribute is not expected to be used more generally. It is an internal feature.
+     *
+     * @param string $owner The code which owns the usage
+     * @param null|string $replacement Any replacement for the deprecated thing
+     * @param null|string $since When it was deprecated
+     * @param null|string $reason Why it was deprecated
+     * @param null|string $mdl Link to the Moodle Tracker issue for more information
+     * @param bool $final Whether this is a final deprecation
+     * @param bool $emit Whether to emit a deprecation warning
+     */
+    public function __construct(
+        public readonly string $owner,
+        ?string $replacement,
+        ?string $since,
+        ?string $reason,
+        ?string $mdl,
+        bool $final,
+        bool $emit,
+    ) {
+        parent::__construct(
+            replacement: $replacement,
+            since: $since,
+            reason: $reason,
+            mdl: $mdl,
+            final: $final,
+            emit: $emit,
+        );
+    }
+}
diff --git a/lib/classes/deprecation.php b/lib/classes/deprecation.php
index b71fd502d9b6..e11b12058ac3 100644
--- a/lib/classes/deprecation.php
+++ b/lib/classes/deprecation.php
@@ -16,6 +16,9 @@
 
 namespace core;
 
+use core\attribute\deprecated;
+use core\attribute\deprecated_with_reference;
+
 /**
  * Deprecation utility.
  *
@@ -42,17 +45,14 @@ public static function from(array|string|object $reference): ?deprecated {
                 return self::from(explode('::', $reference));
             }
 
-            if (class_exists($reference)) {
+            if (class_exists($reference) || interface_exists($reference) || trait_exists($reference)) {
                 // The reference looks to be a class name.
                 return self::from([$reference]);
             }
 
             if (function_exists($reference)) {
                 // The reference looks to be a global function.
-                $ref = new \ReflectionFunction($reference);
-                if ($attributes = $ref->getAttributes(deprecated::class)) {
-                    return $attributes[0]->newInstance();
-                }
+                return self::get_attribute(new \ReflectionFunction($reference), $reference);
             }
 
             return null;
@@ -75,14 +75,45 @@ public static function from(array|string|object $reference): ?deprecated {
                 return self::from_reflected_object($rc, $reference[1] ?? null);
             }
 
-            if (is_string($reference[0]) && class_exists($reference[0])) {
-                $rc = new \ReflectionClass($reference[0]);
-                return self::from_reflected_object($rc, $reference[1] ?? null);
+            if (is_string($reference[0])) {
+                if (class_exists($reference[0]) || interface_exists($reference[0]) || trait_exists($reference[0])) {
+                    $rc = new \ReflectionClass($reference[0]);
+                    return self::from_reflected_object($rc, $reference[1] ?? null);
+                }
             }
 
             // The reference is an array, but it's not an object or a class that currently exists.
             return null;
         }
+
+        // The reference is none of the above.
+        return null;
+    }
+
+    /**
+     * Get a deprecation attribute from a reflector.
+     *
+     * @param \Reflector $ref The reflector
+     * @param string $owner A descriptor of the owner of the thing that is deprecated
+     * @return null|deprecated_with_reference
+     */
+    protected static function get_attribute(
+        \Reflector $ref,
+        string $owner,
+    ): ?deprecated_with_reference {
+        if ($attributes = $ref->getAttributes(deprecated::class)) {
+            $attribute = $attributes[0]->newInstance();
+            return new deprecated_with_reference(
+                owner: $owner,
+                replacement: $attribute->replacement,
+                since: $attribute->since,
+                reason: $attribute->reason,
+                mdl: $attribute->mdl,
+                final: $attribute->final,
+                emit: $attribute->emit,
+            );
+        }
+        return null;
     }
 
     /**
@@ -107,47 +138,59 @@ public static function emit_deprecation_if_present(array|string|object $referenc
     }
 
     /**
-     * Fetch a deprecation attribute from a reflected object.
+     * Fetch a referenced deprecation attribute from a reflected object.
      *
      * @param \ReflectionClass $rc The reflected object
      * @param null|string $name The name of the thing to check for deprecation
-     * @return null|deprecated
+     * @return null|deprecated_with_reference
      */
     protected static function from_reflected_object(
         \ReflectionClass $rc,
         ?string $name,
-    ): ?deprecated {
-        if ($name === null) {
-            // No name specified. This may be a deprecated class.
-            if ($attributes = $rc->getAttributes(deprecated::class)) {
-                return $attributes[0]->newInstance();
+    ): ?deprecated_with_reference {
+        // Check if the class itself is deprecated first.
+        $classattribute = self::get_attribute($rc, $rc->name);
+        if ($classattribute || $name === null) {
+            return $classattribute;
+        }
+
+        // Check for any deprecated interfaces.
+        foreach ($rc->getInterfaces() as $interface) {
+            if ($attribute = self::get_attribute($interface, $interface->name)) {
+                return $attribute;
+            }
+        }
+
+        // And any deprecated traits.
+        foreach ($rc->getTraits() as $trait) {
+            if ($attribute = self::get_attribute($trait, $trait->name)) {
+                return $attribute;
             }
-            return null;
         }
 
         if ($rc->hasConstant($name)) {
             // This class has a constant with the specified name.
             // Note: This also applies to enums.
-            $ref = $rc->getReflectionConstant($name);
-            if ($attributes = $ref->getAttributes(deprecated::class)) {
-                return $attributes[0]->newInstance();
-            }
+            return self::get_attribute(
+                $rc->getReflectionConstant($name),
+                "{$rc->name}::{$name}",
+            );
         }
 
         if ($rc->hasMethod($name)) {
             // This class has a method with the specified name.
-            $ref = $rc->getMethod($name);
-            if ($attributes = $ref->getAttributes(deprecated::class)) {
-                return $attributes[0]->newInstance();
-            }
+            return self::get_attribute(
+                $rc->getMethod($name),
+                "{$rc->name}::{$name}",
+            );
         }
 
         if ($rc->hasProperty($name)) {
             // This class has a property with the specified name.
-            $ref = $rc->getProperty($name);
-            if ($attributes = $ref->getAttributes(deprecated::class)) {
-                return $attributes[0]->newInstance();
-            }
+            return self::get_attribute(
+                $rc->getProperty($name),
+                "{$rc->name}::{$name}",
+            );
         }
 
         return null;
@@ -157,10 +200,19 @@ protected static function from_reflected_object(
      * Get a string describing the deprecation.
      *
      * @param deprecated $attribute
+     * @param string $owner
      * @return string
      */
-    public static function get_deprecation_string(deprecated $attribute): string {
-        $output = "Deprecation: {$attribute->descriptor} has been deprecated";
+    public static function get_deprecation_string(
+        deprecated $attribute,
+    ): string {
+        $output = "Deprecation:";
+
+        if ($attribute instanceof deprecated_with_reference) {
+            $output .= " {$attribute->owner}";
+        }
+        $output .= " has been deprecated";
+
         if ($attribute->since) {
             $output .= " since {$attribute->since}";
         }
@@ -187,7 +239,9 @@ public static function get_deprecation_string(deprecated $attribute): string {
      *
      * @param deprecated $attribute
      */
-    public static function emit_deprecation_notice(deprecated $attribute): void {
+    protected static function emit_deprecation_notice(
+        deprecated $attribute,
+    ): void {
         if (!$attribute->emit) {
             return;
         }
diff --git a/lib/classes/hook/output/standard_head_html_prepend.php b/lib/classes/hook/output/before_standard_head_html_generation.php
similarity index 82%
rename from lib/classes/hook/output/standard_head_html_prepend.php
rename to lib/classes/hook/output/before_standard_head_html_generation.php
index 5a4ac7d0c567..4a2e99ac9b40 100644
--- a/lib/classes/hook/output/standard_head_html_prepend.php
+++ b/lib/classes/hook/output/before_standard_head_html_generation.php
@@ -26,19 +26,25 @@
 #[\core\attribute\tags('output')]
 #[\core\attribute\label('Allows plugins to add any elements to the page &lt;head&gt; html tag.')]
 #[\core\attribute\hook\replaces_callbacks('before_standard_html_head')]
-class standard_head_html_prepend {
-    /** @var string $output Stores results from callbacks */
-    private $output = '';
+final class before_standard_head_html_generation {
+    public function __construct(
+        /** @var \renderer_base The core_renderer instance used for the generation */
+        public readonly \renderer_base $renderer,
+        private string $output = '',
+    ) {
+    }
 
     /**
      * Plugins implementing callback can add any HTML to the page.
      *
      * Must be a string containing valid html head content
      *
-     * @param string $output
+     * @param null|string $output
      */
-    public function add_html(string $output): void {
-        $this->output .= $output;
+    public function add_html(?string $output): void {
+        if ($output) {
+            $this->output .= $output;
+        }
     }
 
     /**
diff --git a/lib/classes/param.php b/lib/classes/param.php
index 359ffc37b293..9c817ff4f5b2 100644
--- a/lib/classes/param.php
+++ b/lib/classes/param.php
@@ -18,6 +18,7 @@
 
 use coding_exception;
 use core_text;
+use core\attribute\deprecated;
 use core\ip_utils;
 use invalid_parameter_exception;
 use moodle_exception;
@@ -222,9 +223,9 @@ enum param: string {
      * @deprecated since 2.0
      */
     #[deprecated(
-        'param::CLEAN',
+        replacement: 'a more specific type of parameter',
         since: '2.0',
-        reason: 'Please use a more specific type of parameter',
+        reason: 'The CLEAN param type is too generic to perform satisfactory validation',
         emit: false,
     )]
     case CLEAN = 'clean';
@@ -234,7 +235,7 @@ enum param: string {
      * @deprecated since 2.0
      */
     #[deprecated(
-        'param::INTEGER',
+        replacement: 'param::INT',
         since: '2.0',
         reason: 'Alias for INT',
         final: true,
@@ -246,7 +247,7 @@ enum param: string {
      * @deprecated since 2.0
      */
     #[deprecated(
-        'param::NUMBER',
+        replacement: 'param::FLOAT',
         since: '2.0',
         reason: 'Alias for FLOAT',
         final: true,
@@ -259,7 +260,7 @@ enum param: string {
      * @deprecated since 2.0
      */
     #[deprecated(
-        'param::ACTION',
+        replacement: 'param::ALPHANUMEXT',
         since: '2.0',
         reason: 'Alias for PARAM_ALPHANUMEXT',
         final: true,
@@ -272,7 +273,7 @@ enum param: string {
      * @deprecated since 2.0
      */
     #[deprecated(
-        'param::FORMAT',
+        replacement: 'param::ALPHANUMEXT',
         since: '2.0',
         reason: 'Alias for PARAM_ALPHANUMEXT',
         final: true,
@@ -284,7 +285,7 @@ enum param: string {
      * @deprecated since 2.0
      */
     #[deprecated(
-        'param::MULTILANG',
+        replacement: 'param::TEXT',
         since: '2.0',
         reason: 'Alias for PARAM_TEXT',
         final: true,
@@ -303,7 +304,7 @@ enum param: string {
      * @deprecated since 2.0
      */
     #[deprecated(
-        'param::CLEANFILE',
+        replacement: 'param::FILE',
         since: '2.0',
         reason: 'Alias for PARAM_FILE',
     )]
diff --git a/lib/classes/scss.php b/lib/classes/scss.php
index 31d73536eb1b..301a7d65cddc 100644
--- a/lib/classes/scss.php
+++ b/lib/classes/scss.php
@@ -164,7 +164,6 @@ protected function compileChild($child, \ScssPhp\ScssPhp\Formatter\OutputBlock $
 
                 // We need to find the import path relative to the directory of the currently processed file.
                 $currentdirectory = new ReflectionProperty(\ScssPhp\ScssPhp\Compiler::class, 'currentDirectory');
-                $currentdirectory->setAccessible(true);
 
                 if ($path = $this->findImport($path, $currentdirectory->getValue($this))) {
                     if ($this->is_valid_file($path)) {
diff --git a/lib/db/services.php b/lib/db/services.php
index 672509c38b34..1886f7de5976 100644
--- a/lib/db/services.php
+++ b/lib/db/services.php
@@ -1706,13 +1706,6 @@
         'capabilities'  => 'moodle/question:flag',
         'services'      => array(MOODLE_OFFICIAL_MOBILE_SERVICE),
     ),
-    'core_question_submit_tags_form' => array(
-        'classname'     => 'core_question_external',
-        'methodname'    => 'submit_tags_form',
-        'description'   => 'Update the question tags.',
-        'type'          => 'write',
-        'ajax' => true,
-    ),
     'core_question_get_random_question_summaries' => array(
         'classname' => 'core_question_external',
         'methodname' => 'get_random_question_summaries',
diff --git a/lib/ddl/tests/ddl_test.php b/lib/ddl/tests/ddl_test.php
index 3dd3d07f22ac..85456aec28ef 100644
--- a/lib/ddl/tests/ddl_test.php
+++ b/lib/ddl/tests/ddl_test.php
@@ -1885,7 +1885,6 @@ public function test_leftover_temp_tables_cache() {
 
         $rc = new \ReflectionClass('moodle_database');
         $rcm = $rc->getMethod('get_temp_tables_cache');
-        $rcm->setAccessible(true);
         $metacachetemp = $rcm->invokeArgs($DB, []);
 
         // Data of test_table0 should be removed from the cache.
@@ -1896,7 +1895,6 @@ public function test_leftover_temp_tables_cache() {
 
         $rc = new \ReflectionClass('moodle_database');
         $rcm = $rc->getMethod('get_metacache');
-        $rcm->setAccessible(true);
         $metacache = $rcm->invokeArgs($DB, []);
 
         // Data of test_table2 should be intact.
diff --git a/lib/deprecatedlib.php b/lib/deprecatedlib.php
index 1f29fd436699..409a16a41878 100644
--- a/lib/deprecatedlib.php
+++ b/lib/deprecatedlib.php
@@ -3125,3 +3125,94 @@ function random_bytes_emulate($length) {
     );
     return random_bytes($length);
 }
+
+/**
+ * @deprecated since Moodle 4.0
+ */
+function question_preview_url() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0
+ */
+function question_preview_popup_params() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0
+ */
+function question_hash() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0 MDL-71573
+ */
+function question_make_export_url() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0
+ */
+function question_get_export_single_question_url() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0 MDL-71585
+ */
+function question_remove_stale_questions_from_category() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0 MDL-71585
+ */
+function flatten_category_tree() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0 MDL-71585
+ */
+function add_indented_names() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0 MDL-71585
+ */
+function question_category_select_menu() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0 MDL-71585
+ */
+function get_categories_for_contexts() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0 MDL-71585
+ */
+function question_category_options() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0 MDL-71585
+ */
+function question_add_context_in_key() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0 MDL-71585
+ */
+function question_fix_top_names() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
diff --git a/lib/dml/tests/dml_mysqli_read_slave_test.php b/lib/dml/tests/dml_mysqli_read_slave_test.php
index 7c797ebff4f3..681fca72d114 100644
--- a/lib/dml/tests/dml_mysqli_read_slave_test.php
+++ b/lib/dml/tests/dml_mysqli_read_slave_test.php
@@ -117,7 +117,6 @@ public function test_aux_readonly(): void {
             $rc = new \ReflectionClass(\mysqli_native_moodle_database::class);
             $rcm = $rc->getMethod('insert_chunk_size');
 
-            $rcm->setAccessible(true);
             $rcm->invoke($db2);
             $this->assertGreaterThan($reads, $reads = $db2->perf_get_reads());
             $this->assertGreaterThan($readsprimary, $readsprimary = $reads - $db2->perf_get_reads_slave());
diff --git a/lib/dml/tests/dml_test.php b/lib/dml/tests/dml_test.php
index 46fa06f032c9..653f158c3295 100644
--- a/lib/dml/tests/dml_test.php
+++ b/lib/dml/tests/dml_test.php
@@ -500,7 +500,7 @@ public function test_add_sql_debugging() {
         $out = $fixture->four($sql);
         $expected = <<<EOD
 SELECT * FROM {users}
--- line 65 of /lib/dml/tests/fixtures/test_dml_sql_debugging_fixture.php: call to ReflectionMethod->invoke()
+-- line 64 of /lib/dml/tests/fixtures/test_dml_sql_debugging_fixture.php: call to ReflectionMethod->invoke()
 EOD;
         $this->assertEquals($this->unix_to_os_dirsep($expected), $out);
 
@@ -508,8 +508,8 @@ public function test_add_sql_debugging() {
         $out = $fixture->four($sql);
         $expected = <<<EOD
 SELECT * FROM {users}
--- line 65 of /lib/dml/tests/fixtures/test_dml_sql_debugging_fixture.php: call to ReflectionMethod->invoke()
--- line 74 of /lib/dml/tests/fixtures/test_dml_sql_debugging_fixture.php: call to test_dml_sql_debugging_fixture->one()
+-- line 64 of /lib/dml/tests/fixtures/test_dml_sql_debugging_fixture.php: call to ReflectionMethod->invoke()
+-- line 73 of /lib/dml/tests/fixtures/test_dml_sql_debugging_fixture.php: call to test_dml_sql_debugging_fixture->one()
 EOD;
         $this->assertEquals($this->unix_to_os_dirsep($expected), $out);
 
@@ -517,10 +517,10 @@ public function test_add_sql_debugging() {
         $out = $fixture->four($sql);
         $expected = <<<EOD
 SELECT * FROM {users}
--- line 65 of /lib/dml/tests/fixtures/test_dml_sql_debugging_fixture.php: call to ReflectionMethod->invoke()
--- line 74 of /lib/dml/tests/fixtures/test_dml_sql_debugging_fixture.php: call to test_dml_sql_debugging_fixture->one()
--- line 83 of /lib/dml/tests/fixtures/test_dml_sql_debugging_fixture.php: call to test_dml_sql_debugging_fixture->two()
--- line 92 of /lib/dml/tests/fixtures/test_dml_sql_debugging_fixture.php: call to test_dml_sql_debugging_fixture->three()
+-- line 64 of /lib/dml/tests/fixtures/test_dml_sql_debugging_fixture.php: call to ReflectionMethod->invoke()
+-- line 73 of /lib/dml/tests/fixtures/test_dml_sql_debugging_fixture.php: call to test_dml_sql_debugging_fixture->one()
+-- line 82 of /lib/dml/tests/fixtures/test_dml_sql_debugging_fixture.php: call to test_dml_sql_debugging_fixture->two()
+-- line 91 of /lib/dml/tests/fixtures/test_dml_sql_debugging_fixture.php: call to test_dml_sql_debugging_fixture->three()
 -- line 517 of /lib/dml/tests/dml_test.php: call to test_dml_sql_debugging_fixture->four()
 EOD;
         $this->assertEquals($this->unix_to_os_dirsep($expected), $out);
@@ -6371,7 +6371,6 @@ public function test_get_server_info_dbfamily_mysql() {
         $this->assertTrue(empty($cfg->dboptions['versionfromdb']));
         $rc = new \ReflectionClass(\mysqli_native_moodle_database::class);
         $rcm = $rc->getMethod('should_db_version_be_read_from_db');
-        $rcm->setAccessible(true);
         $this->assertFalse($rcm->invokeArgs($DB, []));
 
         ['description' => $description, 'version' => $version] = $DB->get_server_info();
diff --git a/lib/dml/tests/fixtures/test_dml_sql_debugging_fixture.php b/lib/dml/tests/fixtures/test_dml_sql_debugging_fixture.php
index 2aba9dead4c7..c29268c0e093 100644
--- a/lib/dml/tests/fixtures/test_dml_sql_debugging_fixture.php
+++ b/lib/dml/tests/fixtures/test_dml_sql_debugging_fixture.php
@@ -61,7 +61,6 @@ public function get_mock() {
      */
     public function one(string $sql) {
         $method = new \ReflectionMethod($this->db, 'add_sql_debugging');
-        $method->setAccessible(true);
         return $method->invoke($this->db, $sql);
     }
 
diff --git a/lib/dml/tests/fixtures/test_moodle_read_slave_trait.php b/lib/dml/tests/fixtures/test_moodle_read_slave_trait.php
index 07d21d8ae885..6826c3d93625 100644
--- a/lib/dml/tests/fixtures/test_moodle_read_slave_trait.php
+++ b/lib/dml/tests/fixtures/test_moodle_read_slave_trait.php
@@ -53,7 +53,6 @@ public function __construct($external = false) {
         $this->prefix = 'test_'; // Default, not to leave empty.
 
         $rcp = new ReflectionProperty(parent::class, 'wantreadslave');
-        $rcp->setAccessible(true);
         $rcp->setValue($this, true);
 
         $this->dbhwrite = $rw;
diff --git a/lib/dml/tests/mysqli_native_moodle_database_test.php b/lib/dml/tests/mysqli_native_moodle_database_test.php
index d40c5646d27e..dd17338224ab 100644
--- a/lib/dml/tests/mysqli_native_moodle_database_test.php
+++ b/lib/dml/tests/mysqli_native_moodle_database_test.php
@@ -70,7 +70,6 @@ public function new_connection(?bool $compress = false, ?string $ssl = null): my
 
         $reflector = new ReflectionClass($db2);
         $rp = $reflector->getProperty('mysqli');
-        $rp->setAccessible(true);
         return $rp->getValue($db2);
     }
 
diff --git a/lib/dml/tests/pgsql_native_moodle_database_test.php b/lib/dml/tests/pgsql_native_moodle_database_test.php
index 5e3986035b6b..3e0a32e55464 100644
--- a/lib/dml/tests/pgsql_native_moodle_database_test.php
+++ b/lib/dml/tests/pgsql_native_moodle_database_test.php
@@ -89,7 +89,6 @@ private function get_current_index(): int {
         global $DB;
         $reflector = new ReflectionClass($DB);
         $property = $reflector->getProperty('inorequaluniqueindex');
-        $property->setAccessible(true);
         return (int) $property->getValue($DB);
     }
 
@@ -390,7 +389,6 @@ public function new_connection($ssl) {
 
         $reflector = new ReflectionClass($db2);
         $rp = $reflector->getProperty('pgsql');
-        $rp->setAccessible(true);
         return $rp->getValue($db2);
     }
 
diff --git a/lib/dml/tests/sqlsrv_native_moodle_database_test.php b/lib/dml/tests/sqlsrv_native_moodle_database_test.php
index 9e0f34b9f7ea..0d4800a6e470 100644
--- a/lib/dml/tests/sqlsrv_native_moodle_database_test.php
+++ b/lib/dml/tests/sqlsrv_native_moodle_database_test.php
@@ -125,10 +125,8 @@ public function test_add_no_lock_to_temp_tables($input, $expected) {
         $reflector = new \ReflectionObject($sqlsrv);
 
         $method = $reflector->getMethod('add_no_lock_to_temp_tables');
-        $method->setAccessible(true);
 
         $temptablesproperty = $reflector->getProperty('temptables');
-        $temptablesproperty->setAccessible(true);
         $temptables = new temptables_tester();
 
         $temptablesproperty->setValue($sqlsrv, $temptables);
@@ -252,7 +250,6 @@ public function test_has_query_order_by(string $sql, string $expectedmainquery,
 
         // The has_query_order_by static method is protected. Use Reflection to call the method.
         $method = new \ReflectionMethod('sqlsrv_native_moodle_database', 'has_query_order_by');
-        $method->setAccessible(true);
         $result = $method->invoke(null, $sql);
         $this->assertSame($expectedresult, $result);
     }
diff --git a/lib/editor/atto/plugins/html/thirdpartylibs.xml b/lib/editor/atto/plugins/html/thirdpartylibs.xml
index 6baba0ca1fb1..ceb826cbf70f 100644
--- a/lib/editor/atto/plugins/html/thirdpartylibs.xml
+++ b/lib/editor/atto/plugins/html/thirdpartylibs.xml
@@ -12,7 +12,7 @@
     <location>yui/src/beautify</location>
     <name>jsbeautify</name>
     <description>Beautify HTML code in Atto.</description>
-    <version>1.14.7</version>
+    <version>1.15.1</version>
     <license>MIT</license>
     <repository>https://github.com/beautify-web/js-beautify</repository>
     <copyrights>
diff --git a/lib/editor/atto/plugins/html/yui/build/moodle-atto_html-beautify/moodle-atto_html-beautify-debug.js b/lib/editor/atto/plugins/html/yui/build/moodle-atto_html-beautify/moodle-atto_html-beautify-debug.js
index 6ebc08992d70..4bd9ce1b0259 100644
--- a/lib/editor/atto/plugins/html/yui/build/moodle-atto_html-beautify/moodle-atto_html-beautify-debug.js
+++ b/lib/editor/atto/plugins/html/yui/build/moodle-atto_html-beautify/moodle-atto_html-beautify-debug.js
@@ -77,7 +77,7 @@ Y.namespace('M.atto_html').beautify = exports;
             }                   }
 
     space_after_anon_function (default false) - should the space before an anonymous function's parens be added, "function()" vs "function ()",
-          NOTE: This option is overriden by jslint_happy (i.e. if jslint_happy is true, space_after_anon_function is true by design)
+          NOTE: This option is overridden by jslint_happy (i.e. if jslint_happy is true, space_after_anon_function is true by design)
 
     brace_style (default "collapse") - "collapse" | "expand" | "end-expand" | "none" | any of the former + ",preserve-inline"
             put braces on the same line as control statements (default), or put braces on own line (Allman / ANSI style), or just put end braces on own line, or attempt to keep them where they are.
@@ -928,7 +928,7 @@ Beautifier.prototype.handle_start_block = function(current_token) {
       }
     }
     if (this._flags.last_token.type !== TOKEN.OPERATOR && this._flags.last_token.type !== TOKEN.START_EXPR) {
-      if (this._flags.last_token.type === TOKEN.START_BLOCK && !this._flags.inline_frame) {
+      if (in_array(this._flags.last_token.type, [TOKEN.START_BLOCK, TOKEN.SEMICOLON]) && !this._flags.inline_frame) {
         this.print_newline();
       } else {
         this._output.space_before_token = true;
@@ -1054,7 +1054,9 @@ Beautifier.prototype.handle_word = function(current_token) {
   }
 
   if (this._flags.last_token.type === TOKEN.COMMA || this._flags.last_token.type === TOKEN.START_EXPR || this._flags.last_token.type === TOKEN.EQUALS || this._flags.last_token.type === TOKEN.OPERATOR) {
-    if (!this.start_of_object_property()) {
+    if (!this.start_of_object_property() && !(
+        // start of object property is different for numeric values with +/- prefix operators
+        in_array(this._flags.last_token.text, ['+', '-']) && this._last_last_text === ':' && this._flags.parent.mode === MODE.ObjectLiteral)) {
       this.allow_wrap_or_preserved_newline(current_token);
     }
   }
@@ -1335,6 +1337,12 @@ Beautifier.prototype.handle_operator = function(current_token) {
     return;
   }
 
+  if (in_array(current_token.text, ['-', '+']) && this.start_of_object_property()) {
+    // numeric value with +/- symbol in front as a property
+    this.print_token(current_token);
+    return;
+  }
+
   // Allow line wrapping between operators when operator_position is
   //   set to before or preserve
   if (this._flags.last_token.type === TOKEN.OPERATOR && in_array(this._options.operator_position, OPERATOR_POSITION_BEFORE_OR_PRESERVE)) {
@@ -2161,12 +2169,13 @@ var nonASCIIidentifierChars = "\\u0300-\\u036f\\u0483-\\u0487\\u0591-\\u05bd\\u0
 //var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]");
 //var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]");
 
-var identifierStart = "(?:\\\\u[0-9a-fA-F]{4}|[" + baseASCIIidentifierStartChars + nonASCIIidentifierStartChars + "])";
-var identifierChars = "(?:\\\\u[0-9a-fA-F]{4}|[" + baseASCIIidentifierChars + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "])*";
+var unicodeEscapeOrCodePoint = "\\\\u[0-9a-fA-F]{4}|\\\\u\\{[0-9a-fA-F]+\\}";
+var identifierStart = "(?:" + unicodeEscapeOrCodePoint + "|[" + baseASCIIidentifierStartChars + nonASCIIidentifierStartChars + "])";
+var identifierChars = "(?:" + unicodeEscapeOrCodePoint + "|[" + baseASCIIidentifierChars + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "])*";
 
 exports.identifier = new RegExp(identifierStart + identifierChars, 'g');
 exports.identifierStart = new RegExp(identifierStart);
-exports.identifierMatch = new RegExp("(?:\\\\u[0-9a-fA-F]{4}|[" + baseASCIIidentifierChars + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "])+");
+exports.identifierMatch = new RegExp("(?:" + unicodeEscapeOrCodePoint + "|[" + baseASCIIidentifierChars + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "])+");
 
 var nonASCIIwhitespace = /[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]/; // jshint ignore:line
 
@@ -2355,10 +2364,10 @@ function Options(options, merge_child_field) {
 
   this.indent_empty_lines = this._get_boolean('indent_empty_lines');
 
-  // valid templating languages ['django', 'erb', 'handlebars', 'php', 'smarty']
-  // For now, 'auto' = all off for javascript, all on for html (and inline javascript).
+  // valid templating languages ['django', 'erb', 'handlebars', 'php', 'smarty', 'angular']
+  // For now, 'auto' = all off for javascript, all except angular on for html (and inline javascript/css).
   // other values ignored
-  this.templating = this._get_selection_list('templating', ['auto', 'none', 'django', 'erb', 'handlebars', 'php', 'smarty'], ['auto']);
+  this.templating = this._get_selection_list('templating', ['auto', 'none', 'angular', 'django', 'erb', 'handlebars', 'php', 'smarty'], ['auto']);
 }
 
 Options.prototype._get_array = function(name, default_value) {
@@ -2654,6 +2663,7 @@ Tokenizer.prototype._get_next_token = function(previous_token, open_token) { //
 
   token = token || this._read_non_javascript(c);
   token = token || this._read_string(c);
+  token = token || this._read_pair(c, this._input.peek(1)); // Issue #2062 hack for record type '#{'
   token = token || this._read_word(previous_token);
   token = token || this._read_singles(c);
   token = token || this._read_comment(c);
@@ -2712,6 +2722,19 @@ Tokenizer.prototype._read_singles = function(c) {
   return token;
 };
 
+Tokenizer.prototype._read_pair = function(c, d) {
+  var token = null;
+  if (c === '#' && d === '{') {
+    token = this._create_token(TOKEN.START_BLOCK, c + d);
+  }
+
+  if (token) {
+    this._input.next();
+    this._input.next();
+  }
+  return token;
+};
+
 Tokenizer.prototype._read_punctuation = function() {
   var resulting_string = this.__patterns.punct.read();
 
@@ -2957,6 +2980,9 @@ function unescape_string(s) {
         matched = input_scan.match(/x([0-9A-Fa-f]{2})/g);
       } else if (input_scan.peek() === 'u') {
         matched = input_scan.match(/u([0-9A-Fa-f]{4})/g);
+        if (!matched) {
+          matched = input_scan.match(/u\{([0-9A-Fa-f]+)\}/g);
+        }
       } else {
         out += '\\';
         if (input_scan.hasNext()) {
@@ -2980,7 +3006,9 @@ function unescape_string(s) {
       } else if (escaped >= 0x00 && escaped < 0x20) {
         // leave 0x00...0x1f escaped
         out += '\\' + matched[0];
-        continue;
+      } else if (escaped > 0x10FFFF) {
+        // If the escape sequence is out of bounds, keep the original sequence and continue conversion
+        out += '\\' + matched[0];
       } else if (escaped === 0x22 || escaped === 0x27 || escaped === 0x5c) {
         // single-quote, apostrophe, backslash - escape these
         out += '\\' + String.fromCharCode(escaped);
@@ -3803,7 +3831,8 @@ var template_names = {
   erb: false,
   handlebars: false,
   php: false,
-  smarty: false
+  smarty: false,
+  angular: false
 };
 
 // This lets templates appear anywhere we would do a readUntil
@@ -4609,10 +4638,10 @@ function Options(options, merge_child_field) {
 
   this.indent_empty_lines = this._get_boolean('indent_empty_lines');
 
-  // valid templating languages ['django', 'erb', 'handlebars', 'php', 'smarty']
-  // For now, 'auto' = all off for javascript, all on for html (and inline javascript).
+  // valid templating languages ['django', 'erb', 'handlebars', 'php', 'smarty', 'angular']
+  // For now, 'auto' = all off for javascript, all except angular on for html (and inline javascript/css).
   // other values ignored
-  this.templating = this._get_selection_list('templating', ['auto', 'none', 'django', 'erb', 'handlebars', 'php', 'smarty'], ['auto']);
+  this.templating = this._get_selection_list('templating', ['auto', 'none', 'angular', 'django', 'erb', 'handlebars', 'php', 'smarty'], ['auto']);
 }
 
 Options.prototype._get_array = function(name, default_value) {
@@ -5115,18 +5144,18 @@ function Beautifier(source_text, options) {
 
   // https://developer.mozilla.org/en-US/docs/Web/CSS/At-rule
   this.NESTED_AT_RULE = {
-    "@page": true,
-    "@font-face": true,
-    "@keyframes": true,
+    "page": true,
+    "font-face": true,
+    "keyframes": true,
     // also in CONDITIONAL_GROUP_RULE below
-    "@media": true,
-    "@supports": true,
-    "@document": true
+    "media": true,
+    "supports": true,
+    "document": true
   };
   this.CONDITIONAL_GROUP_RULE = {
-    "@media": true,
-    "@supports": true,
-    "@document": true
+    "media": true,
+    "supports": true,
+    "document": true
   };
   this.NON_SEMICOLON_NEWLINE_PROPERTY = [
     "grid-template-areas",
@@ -5254,8 +5283,7 @@ Beautifier.prototype.beautify = function() {
   // label { content: blue }
   var insidePropertyValue = false;
   var enteringConditionalGroup = false;
-  var insideAtExtend = false;
-  var insideAtImport = false;
+  var insideNonNestedAtRule = false;
   var insideScssMap = false;
   var topCharacter = this._ch;
   var insideNonSemiColonValues = false;
@@ -5310,10 +5338,30 @@ Beautifier.prototype.beautify = function() {
 
       // Ensures any new lines following the comment are preserved
       this.eatWhitespace(true);
-    } else if (this._ch === '@' || this._ch === '$') {
+    } else if (this._ch === '$') {
+      this.preserveSingleSpace(isAfterSpace);
+
+      this.print_string(this._ch);
+
+      // strip trailing space, if present, for hash property checks
+      var variable = this._input.peekUntilAfter(/[: ,;{}()[\]\/='"]/g);
+
+      if (variable.match(/[ :]$/)) {
+        // we have a variable or pseudo-class, add it and insert one space before continuing
+        variable = this.eatString(": ").replace(/\s+$/, '');
+        this.print_string(variable);
+        this._output.space_before_token = true;
+      }
+
+      // might be sass variable
+      if (parenLevel === 0 && variable.indexOf(':') !== -1) {
+        insidePropertyValue = true;
+        this.indent();
+      }
+    } else if (this._ch === '@') {
       this.preserveSingleSpace(isAfterSpace);
 
-      // deal with less propery mixins @{...}
+      // deal with less property mixins @{...}
       if (this._input.peek() === '{') {
         this.print_string(this._ch + this.eatString('}'));
       } else {
@@ -5324,29 +5372,26 @@ Beautifier.prototype.beautify = function() {
 
         if (variableOrRule.match(/[ :]$/)) {
           // we have a variable or pseudo-class, add it and insert one space before continuing
-          variableOrRule = this.eatString(": ").replace(/\s$/, '');
+          variableOrRule = this.eatString(": ").replace(/\s+$/, '');
           this.print_string(variableOrRule);
           this._output.space_before_token = true;
         }
 
-        variableOrRule = variableOrRule.replace(/\s$/, '');
-
-        if (variableOrRule === 'extend') {
-          insideAtExtend = true;
-        } else if (variableOrRule === 'import') {
-          insideAtImport = true;
-        }
+        // might be less variable
+        if (parenLevel === 0 && variableOrRule.indexOf(':') !== -1) {
+          insidePropertyValue = true;
+          this.indent();
 
-        // might be a nesting at-rule
-        if (variableOrRule in this.NESTED_AT_RULE) {
+          // might be a nesting at-rule
+        } else if (variableOrRule in this.NESTED_AT_RULE) {
           this._nestedLevel += 1;
           if (variableOrRule in this.CONDITIONAL_GROUP_RULE) {
             enteringConditionalGroup = true;
           }
-          // might be less variable
-        } else if (!insideRule && parenLevel === 0 && variableOrRule.indexOf(':') !== -1) {
-          insidePropertyValue = true;
-          this.indent();
+
+          // might be a non-nested at-rule
+        } else if (parenLevel === 0 && !insidePropertyValue) {
+          insideNonNestedAtRule = true;
         }
       }
     } else if (this._ch === '#' && this._input.peek() === '{') {
@@ -5358,6 +5403,9 @@ Beautifier.prototype.beautify = function() {
         this.outdent();
       }
 
+      // non nested at rule becomes nested
+      insideNonNestedAtRule = false;
+
       // when entering conditional groups, only rulesets are allowed
       if (enteringConditionalGroup) {
         enteringConditionalGroup = false;
@@ -5398,8 +5446,7 @@ Beautifier.prototype.beautify = function() {
       if (previous_ch === '{') {
         this._output.trim(true);
       }
-      insideAtImport = false;
-      insideAtExtend = false;
+
       if (insidePropertyValue) {
         this.outdent();
         insidePropertyValue = false;
@@ -5433,9 +5480,10 @@ Beautifier.prototype.beautify = function() {
         }
       }
 
-      if ((insideRule || enteringConditionalGroup) && !(this._input.lookBack("&") || this.foundNestedPseudoClass()) && !this._input.lookBack("(") && !insideAtExtend && parenLevel === 0) {
+      if ((insideRule || enteringConditionalGroup) && !(this._input.lookBack("&") || this.foundNestedPseudoClass()) && !this._input.lookBack("(") && !insideNonNestedAtRule && parenLevel === 0) {
         // 'property: value' delimiter
         // which could be in a conditional group query
+
         this.print_string(':');
         if (!insidePropertyValue) {
           insidePropertyValue = true;
@@ -5472,8 +5520,7 @@ Beautifier.prototype.beautify = function() {
           this.outdent();
           insidePropertyValue = false;
         }
-        insideAtExtend = false;
-        insideAtImport = false;
+        insideNonNestedAtRule = false;
         this.print_string(this._ch);
         this.eatWhitespace(true);
 
@@ -5538,7 +5585,7 @@ Beautifier.prototype.beautify = function() {
     } else if (this._ch === ',') {
       this.print_string(this._ch);
       this.eatWhitespace(true);
-      if (this._options.selector_separator_newline && (!insidePropertyValue || insideScssMap) && parenLevel === 0 && !insideAtImport && !insideAtExtend) {
+      if (this._options.selector_separator_newline && (!insidePropertyValue || insideScssMap) && parenLevel === 0 && !insideNonNestedAtRule) {
         this._output.add_new_line();
       } else {
         this._output.space_before_token = true;
@@ -6353,10 +6400,10 @@ function Options(options, merge_child_field) {
 
   this.indent_empty_lines = this._get_boolean('indent_empty_lines');
 
-  // valid templating languages ['django', 'erb', 'handlebars', 'php', 'smarty']
-  // For now, 'auto' = all off for javascript, all on for html (and inline javascript).
+  // valid templating languages ['django', 'erb', 'handlebars', 'php', 'smarty', 'angular']
+  // For now, 'auto' = all off for javascript, all except angular on for html (and inline javascript/css).
   // other values ignored
-  this.templating = this._get_selection_list('templating', ['auto', 'none', 'django', 'erb', 'handlebars', 'php', 'smarty'], ['auto']);
+  this.templating = this._get_selection_list('templating', ['auto', 'none', 'angular', 'django', 'erb', 'handlebars', 'php', 'smarty'], ['auto']);
 }
 
 Options.prototype._get_array = function(name, default_value) {
@@ -7229,7 +7276,8 @@ var template_names = {
   erb: false,
   handlebars: false,
   php: false,
-  smarty: false
+  smarty: false,
+  angular: false
 };
 
 // This lets templates appear anywhere we would do a readUntil
@@ -7572,6 +7620,13 @@ Printer.prototype.indent = function() {
   this.indent_level++;
 };
 
+Printer.prototype.deindent = function() {
+  if (this.indent_level > 0) {
+    this.indent_level--;
+    this._output.set_indent(this.indent_level, this.alignment_size);
+  }
+};
+
 Printer.prototype.get_full_indent = function(level) {
   level = this.indent_level + (level || 0);
   if (level < 1) {
@@ -7757,15 +7812,19 @@ Beautifier.prototype.beautify = function() {
   while (raw_token.type !== TOKEN.EOF) {
 
     if (raw_token.type === TOKEN.TAG_OPEN || raw_token.type === TOKEN.COMMENT) {
-      parser_token = this._handle_tag_open(printer, raw_token, last_tag_token, last_token);
+      parser_token = this._handle_tag_open(printer, raw_token, last_tag_token, last_token, tokens);
       last_tag_token = parser_token;
     } else if ((raw_token.type === TOKEN.ATTRIBUTE || raw_token.type === TOKEN.EQUALS || raw_token.type === TOKEN.VALUE) ||
       (raw_token.type === TOKEN.TEXT && !last_tag_token.tag_complete)) {
-      parser_token = this._handle_inside_tag(printer, raw_token, last_tag_token, tokens);
+      parser_token = this._handle_inside_tag(printer, raw_token, last_tag_token, last_token);
     } else if (raw_token.type === TOKEN.TAG_CLOSE) {
       parser_token = this._handle_tag_close(printer, raw_token, last_tag_token);
     } else if (raw_token.type === TOKEN.TEXT) {
       parser_token = this._handle_text(printer, raw_token, last_tag_token);
+    } else if (raw_token.type === TOKEN.CONTROL_FLOW_OPEN) {
+      parser_token = this._handle_control_flow_open(printer, raw_token);
+    } else if (raw_token.type === TOKEN.CONTROL_FLOW_CLOSE) {
+      parser_token = this._handle_control_flow_close(printer, raw_token);
     } else {
       // This should never happen, but if it does. Print the raw token
       printer.add_raw_token(raw_token);
@@ -7780,6 +7839,38 @@ Beautifier.prototype.beautify = function() {
   return sweet_code;
 };
 
+Beautifier.prototype._handle_control_flow_open = function(printer, raw_token) {
+  var parser_token = {
+    text: raw_token.text,
+    type: raw_token.type
+  };
+  printer.set_space_before_token(raw_token.newlines || raw_token.whitespace_before !== '', true);
+  if (raw_token.newlines) {
+    printer.print_preserved_newlines(raw_token);
+  } else {
+    printer.set_space_before_token(raw_token.newlines || raw_token.whitespace_before !== '', true);
+  }
+  printer.print_token(raw_token);
+  printer.indent();
+  return parser_token;
+};
+
+Beautifier.prototype._handle_control_flow_close = function(printer, raw_token) {
+  var parser_token = {
+    text: raw_token.text,
+    type: raw_token.type
+  };
+
+  printer.deindent();
+  if (raw_token.newlines) {
+    printer.print_preserved_newlines(raw_token);
+  } else {
+    printer.set_space_before_token(raw_token.newlines || raw_token.whitespace_before !== '', true);
+  }
+  printer.print_token(raw_token);
+  return parser_token;
+};
+
 Beautifier.prototype._handle_tag_close = function(printer, raw_token, last_tag_token) {
   var parser_token = {
     text: raw_token.text,
@@ -7818,7 +7909,7 @@ Beautifier.prototype._handle_tag_close = function(printer, raw_token, last_tag_t
   return parser_token;
 };
 
-Beautifier.prototype._handle_inside_tag = function(printer, raw_token, last_tag_token, tokens) {
+Beautifier.prototype._handle_inside_tag = function(printer, raw_token, last_tag_token, last_token) {
   var wrapped = last_tag_token.has_wrapped_attrs;
   var parser_token = {
     text: raw_token.text,
@@ -7839,7 +7930,6 @@ Beautifier.prototype._handle_inside_tag = function(printer, raw_token, last_tag_
   } else {
     if (raw_token.type === TOKEN.ATTRIBUTE) {
       printer.set_space_before_token(true);
-      last_tag_token.attr_count += 1;
     } else if (raw_token.type === TOKEN.EQUALS) { //no space before =
       printer.set_space_before_token(false);
     } else if (raw_token.type === TOKEN.VALUE && raw_token.previous.type === TOKEN.EQUALS) { //no space before value
@@ -7852,29 +7942,15 @@ Beautifier.prototype._handle_inside_tag = function(printer, raw_token, last_tag_
         wrapped = wrapped || raw_token.newlines !== 0;
       }
 
-
-      if (this._is_wrap_attributes_force) {
-        var force_attr_wrap = last_tag_token.attr_count > 1;
-        if (this._is_wrap_attributes_force_expand_multiline && last_tag_token.attr_count === 1) {
-          var is_only_attribute = true;
-          var peek_index = 0;
-          var peek_token;
-          do {
-            peek_token = tokens.peek(peek_index);
-            if (peek_token.type === TOKEN.ATTRIBUTE) {
-              is_only_attribute = false;
-              break;
-            }
-            peek_index += 1;
-          } while (peek_index < 4 && peek_token.type !== TOKEN.EOF && peek_token.type !== TOKEN.TAG_CLOSE);
-
-          force_attr_wrap = !is_only_attribute;
-        }
-
-        if (force_attr_wrap) {
-          printer.print_newline(false);
-          wrapped = true;
-        }
+      // Wrap for 'force' options, and if the number of attributes is at least that specified in 'wrap_attributes_min_attrs':
+      // 1. always wrap the second and beyond attributes
+      // 2. wrap the first attribute only if 'force-expand-multiline' is specified
+      if (this._is_wrap_attributes_force &&
+        last_tag_token.attr_count >= this._options.wrap_attributes_min_attrs &&
+        (last_token.type !== TOKEN.TAG_OPEN || // ie. second attribute and beyond
+          this._is_wrap_attributes_force_expand_multiline)) {
+        printer.print_newline(false);
+        wrapped = true;
       }
     }
     printer.print_token(raw_token);
@@ -8003,12 +8079,12 @@ Beautifier.prototype._print_custom_beatifier_text = function(printer, raw_token,
   }
 };
 
-Beautifier.prototype._handle_tag_open = function(printer, raw_token, last_tag_token, last_token) {
+Beautifier.prototype._handle_tag_open = function(printer, raw_token, last_tag_token, last_token, tokens) {
   var parser_token = this._get_tag_open_token(raw_token);
 
   if ((last_tag_token.is_unformatted || last_tag_token.is_content_unformatted) &&
     !last_tag_token.is_empty_element &&
-    raw_token.type === TOKEN.TAG_OPEN && raw_token.text.indexOf('</') === 0) {
+    raw_token.type === TOKEN.TAG_OPEN && !parser_token.is_start_tag) {
     // End element tags for unformatted or content_unformatted elements
     // are printed raw to keep any newlines inside them exactly the same.
     printer.add_raw_token(raw_token);
@@ -8022,6 +8098,19 @@ Beautifier.prototype._handle_tag_open = function(printer, raw_token, last_tag_to
     printer.print_token(raw_token);
   }
 
+  // count the number of attributes
+  if (parser_token.is_start_tag && this._is_wrap_attributes_force) {
+    var peek_index = 0;
+    var peek_token;
+    do {
+      peek_token = tokens.peek(peek_index);
+      if (peek_token.type === TOKEN.ATTRIBUTE) {
+        parser_token.attr_count += 1;
+      }
+      peek_index += 1;
+    } while (peek_token.type !== TOKEN.EOF && peek_token.type !== TOKEN.TAG_CLOSE);
+  }
+
   //indent attributes an auto, forced, aligned or forced-align line-wrap
   if (this._is_wrap_attributes_force_aligned || this._is_wrap_attributes_aligned_multiple || this._is_wrap_attributes_preserve_aligned) {
     parser_token.alignment_size = raw_token.text.length + 1;
@@ -8119,7 +8208,7 @@ Beautifier.prototype._get_tag_open_token = function(raw_token) { //function to g
 
   parser_token.is_unformatted = !parser_token.tag_complete && in_array(parser_token.tag_check, this._options.unformatted);
   parser_token.is_content_unformatted = !parser_token.is_empty_element && in_array(parser_token.tag_check, this._options.content_unformatted);
-  parser_token.is_inline_element = in_array(parser_token.tag_name, this._options.inline) || parser_token.tag_name.includes("-") || parser_token.tag_start_char === '{';
+  parser_token.is_inline_element = in_array(parser_token.tag_name, this._options.inline) || (this._options.inline_custom_elements && parser_token.tag_name.includes("-")) || parser_token.tag_start_char === '{';
 
   return parser_token;
 };
@@ -8226,7 +8315,7 @@ Beautifier.prototype._calcluate_parent_multiline = function(printer, parser_toke
 };
 
 //To be used for <p> tag special case:
-var p_closers = ['address', 'article', 'aside', 'blockquote', 'details', 'div', 'dl', 'fieldset', 'figcaption', 'figure', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'header', 'hr', 'main', 'nav', 'ol', 'p', 'pre', 'section', 'table', 'ul'];
+var p_closers = ['address', 'article', 'aside', 'blockquote', 'details', 'div', 'dl', 'fieldset', 'figcaption', 'figure', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'header', 'hr', 'main', 'menu', 'nav', 'ol', 'p', 'pre', 'section', 'table', 'ul'];
 var p_parent_excludes = ['a', 'audio', 'del', 'ins', 'map', 'noscript', 'video'];
 
 Beautifier.prototype._do_optional_end_element = function(parser_token) {
@@ -8249,7 +8338,7 @@ Beautifier.prototype._do_optional_end_element = function(parser_token) {
 
   } else if (parser_token.tag_name === 'li') {
     // An li element’s end tag may be omitted if the li element is immediately followed by another li element or if there is no more content in the parent element.
-    result = result || this._tag_stack.try_pop('li', ['ol', 'ul']);
+    result = result || this._tag_stack.try_pop('li', ['ol', 'ul', 'menu']);
 
   } else if (parser_token.tag_name === 'dd' || parser_token.tag_name === 'dt') {
     // A dd element’s end tag may be omitted if the dd element is immediately followed by another dd element or a dt element, or if there is no more content in the parent element.
@@ -8388,6 +8477,7 @@ function Options(options) {
   this.indent_handlebars = this._get_boolean('indent_handlebars', true);
   this.wrap_attributes = this._get_selection('wrap_attributes',
     ['auto', 'force', 'force-aligned', 'force-expand-multiline', 'aligned-multiple', 'preserve', 'preserve-aligned']);
+  this.wrap_attributes_min_attrs = this._get_number('wrap_attributes_min_attrs', 2);
   this.wrap_attributes_indent_size = this._get_number('wrap_attributes_indent_size', this.indent_size);
   this.extra_liners = this._get_array('extra_liners', ['head', 'body', '/html']);
 
@@ -8405,6 +8495,7 @@ function Options(options) {
     // obsolete inline tags
     'acronym', 'big', 'strike', 'tt'
   ]);
+  this.inline_custom_elements = this._get_boolean('inline_custom_elements', true);
   this.void_elements = this._get_array('void_elements', [
     // HTLM void elements - aka self-closing tags - aka singletons
     // https://www.w3.org/html/wg/drafts/html/master/syntax.html#void-elements
@@ -8479,6 +8570,8 @@ var Pattern = (__webpack_require__(12).Pattern);
 var TOKEN = {
   TAG_OPEN: 'TK_TAG_OPEN',
   TAG_CLOSE: 'TK_TAG_CLOSE',
+  CONTROL_FLOW_OPEN: 'TK_CONTROL_FLOW_OPEN',
+  CONTROL_FLOW_CLOSE: 'TK_CONTROL_FLOW_CLOSE',
   ATTRIBUTE: 'TK_ATTRIBUTE',
   EQUALS: 'TK_EQUALS',
   VALUE: 'TK_VALUE',
@@ -8503,11 +8596,13 @@ var Tokenizer = function(input_string, options) {
 
   this.__patterns = {
     word: templatable_reader.until(/[\n\r\t <]/),
+    word_control_flow_close_excluded: templatable_reader.until(/[\n\r\t <}]/),
     single_quote: templatable_reader.until_after(/'/),
     double_quote: templatable_reader.until_after(/"/),
     attribute: templatable_reader.until(/[\n\r\t =>]|\/>/),
     element_name: templatable_reader.until(/[\n\r\t >\/]/),
 
+    angular_control_flow_start: pattern_reader.matching(/\@[a-zA-Z]+[^({]*[({]/),
     handlebars_comment: pattern_reader.starting_with(/{{!--/).until_after(/--}}/),
     handlebars: pattern_reader.starting_with(/{{/).until_after(/}}/),
     handlebars_open: pattern_reader.until(/[\n\r\t }]/),
@@ -8521,6 +8616,7 @@ var Tokenizer = function(input_string, options) {
 
   if (this._options.indent_handlebars) {
     this.__patterns.word = this.__patterns.word.exclude('handlebars');
+    this.__patterns.word_control_flow_close_excluded = this.__patterns.word_control_flow_close_excluded.exclude('handlebars');
   }
 
   this._unformatted_content_delimiter = null;
@@ -8539,14 +8635,16 @@ Tokenizer.prototype._is_comment = function(current_token) { // jshint unused:fal
 };
 
 Tokenizer.prototype._is_opening = function(current_token) {
-  return current_token.type === TOKEN.TAG_OPEN;
+  return current_token.type === TOKEN.TAG_OPEN || current_token.type === TOKEN.CONTROL_FLOW_OPEN;
 };
 
 Tokenizer.prototype._is_closing = function(current_token, open_token) {
-  return current_token.type === TOKEN.TAG_CLOSE &&
+  return (current_token.type === TOKEN.TAG_CLOSE &&
     (open_token && (
       ((current_token.text === '>' || current_token.text === '/>') && open_token.text[0] === '<') ||
-      (current_token.text === '}}' && open_token.text[0] === '{' && open_token.text[1] === '{')));
+      (current_token.text === '}}' && open_token.text[0] === '{' && open_token.text[1] === '{')))
+  ) || (current_token.type === TOKEN.CONTROL_FLOW_CLOSE &&
+    (current_token.text === '}' && open_token.text.endsWith('{')));
 };
 
 Tokenizer.prototype._reset = function() {
@@ -8565,8 +8663,9 @@ Tokenizer.prototype._get_next_token = function(previous_token, open_token) { //
   token = token || this._read_open_handlebars(c, open_token);
   token = token || this._read_attribute(c, previous_token, open_token);
   token = token || this._read_close(c, open_token);
+  token = token || this._read_control_flows(c, open_token);
   token = token || this._read_raw_content(c, previous_token, open_token);
-  token = token || this._read_content_word(c);
+  token = token || this._read_content_word(c, open_token);
   token = token || this._read_comment_or_cdata(c);
   token = token || this._read_processing(c);
   token = token || this._read_open(c, open_token);
@@ -8631,7 +8730,7 @@ Tokenizer.prototype._read_processing = function(c) { // jshint unused:false
 Tokenizer.prototype._read_open = function(c, open_token) {
   var resulting_string = null;
   var token = null;
-  if (!open_token) {
+  if (!open_token || open_token.type === TOKEN.CONTROL_FLOW_OPEN) {
     if (c === '<') {
 
       resulting_string = this._input.next();
@@ -8648,7 +8747,7 @@ Tokenizer.prototype._read_open = function(c, open_token) {
 Tokenizer.prototype._read_open_handlebars = function(c, open_token) {
   var resulting_string = null;
   var token = null;
-  if (!open_token) {
+  if (!open_token || open_token.type === TOKEN.CONTROL_FLOW_OPEN) {
     if (this._options.indent_handlebars && c === '{' && this._input.peek(1) === '{') {
       if (this._input.peek(2) === '!') {
         resulting_string = this.__patterns.handlebars_comment.read();
@@ -8663,11 +8762,48 @@ Tokenizer.prototype._read_open_handlebars = function(c, open_token) {
   return token;
 };
 
+Tokenizer.prototype._read_control_flows = function(c, open_token) {
+  var resulting_string = '';
+  var token = null;
+  // Only check for control flows if angular templating is set AND indenting is set
+  if (!this._options.templating.includes('angular') || !this._options.indent_handlebars) {
+    return token;
+  }
+
+  if (c === '@') {
+    resulting_string = this.__patterns.angular_control_flow_start.read();
+    if (resulting_string === '') {
+      return token;
+    }
+
+    var opening_parentheses_count = resulting_string.endsWith('(') ? 1 : 0;
+    var closing_parentheses_count = 0;
+    // The opening brace of the control flow is where the number of opening and closing parentheses equal
+    // e.g. @if({value: true} !== null) { 
+    while (!(resulting_string.endsWith('{') && opening_parentheses_count === closing_parentheses_count)) {
+      var next_char = this._input.next();
+      if (next_char === null) {
+        break;
+      } else if (next_char === '(') {
+        opening_parentheses_count++;
+      } else if (next_char === ')') {
+        closing_parentheses_count++;
+      }
+      resulting_string += next_char;
+    }
+    token = this._create_token(TOKEN.CONTROL_FLOW_OPEN, resulting_string);
+  } else if (c === '}' && open_token && open_token.type === TOKEN.CONTROL_FLOW_OPEN) {
+    resulting_string = this._input.next();
+    token = this._create_token(TOKEN.CONTROL_FLOW_CLOSE, resulting_string);
+  }
+  return token;
+};
+
 
 Tokenizer.prototype._read_close = function(c, open_token) {
   var resulting_string = null;
   var token = null;
-  if (open_token) {
+  if (open_token && open_token.type === TOKEN.TAG_OPEN) {
     if (open_token.text[0] === '<' && (c === '>' || (c === '/' && this._input.peek(1) === '>'))) {
       resulting_string = this._input.next();
       if (c === '/') { //  for close tag "/>"
@@ -8754,7 +8890,7 @@ Tokenizer.prototype._read_raw_content = function(c, previous_token, open_token)
   return null;
 };
 
-Tokenizer.prototype._read_content_word = function(c) {
+Tokenizer.prototype._read_content_word = function(c, open_token) {
   var resulting_string = '';
   if (this._options.unformatted_content_delimiter) {
     if (c === this._options.unformatted_content_delimiter[0]) {
@@ -8763,7 +8899,7 @@ Tokenizer.prototype._read_content_word = function(c) {
   }
 
   if (!resulting_string) {
-    resulting_string = this.__patterns.word.read();
+    resulting_string = (open_token && open_token.type === TOKEN.CONTROL_FLOW_OPEN) ? this.__patterns.word_control_flow_close_excluded.read() : this.__patterns.word.read();
   }
   if (resulting_string) {
     return this._create_token(TOKEN.TEXT, resulting_string);
diff --git a/lib/editor/atto/plugins/html/yui/build/moodle-atto_html-beautify/moodle-atto_html-beautify-min.js b/lib/editor/atto/plugins/html/yui/build/moodle-atto_html-beautify/moodle-atto_html-beautify-min.js
index c16731212cc9..9f2d6e07a8b6 100644
--- a/lib/editor/atto/plugins/html/yui/build/moodle-atto_html-beautify/moodle-atto_html-beautify-min.js
+++ b/lib/editor/atto/plugins/html/yui/build/moodle-atto_html-beautify/moodle-atto_html-beautify-min.js
@@ -1,24 +1,25 @@
-YUI.add("moodle-atto_html-beautify",function(t,e){var s,a,u,n,i,_,r={};t.namespace("M.atto_html").beautify=r,function(){"use strict";var t,n=[function(t,e,n){var i=n(1).Beautifier,_=n(5).Options;t.exports=function(t,e){return new i(t,e).beautify()},t.exports.defaultOptions=function(){return new _}},function(n,_,t){var d,f,g,o,h,s,a,r,b,m,y,w=t(2).Output,k=t(3).Token,x=t(4),v=t(5).Options,E=t(7).Tokenizer,O=t(7).line_starters,T=t(7).positionable_operators,p=t(7).TOKEN;function l(t,e){return-1!==e.indexOf(t)}function i(t,e){return t&&t.type===p.RESERVED&&t.text===e}function c(t,e){return t&&t.type===p.RESERVED&&l(t.text,e)}function R(t,e){e.multiline_frame||e.mode===r||e.mode===b||t.remove_indent(e.start_line_index)}function u(t){return t===a}function A(t){return l(t,[m,r,b])}function e(t,e){e=e||{},this._source_text=t||"",this._output=null,this._tokens=null,this._last_last_text=null,this._flags=null,this._previous_flags=null,this._flag_store=null,this._options=new v(e)}d=["case","return","do","if","throw","else","await","break","continue","async"],f=function(t){for(var e={},n=0;n<t.length;n++)e[t[n].replace(/-/g,"_")]=t[n];return e}(["before-newline","after-newline","preserve-newline"]),g=[f.before_newline,f.preserve_newline],o="BlockStatement",h="Statement",s="ObjectLiteral",a="ArrayLiteral",r="ForInitializer",b="Conditional",m="Expression",e.prototype.create_flags=function(t,e){var n=0;return t&&(n=t.indentation_level,!this._output.just_added_newline()&&t.line_indent_level>n&&(n=t.line_indent_level)),{mode:e,parent:t,last_token:t?t.last_token:new k(p.START_BLOCK,""),last_word:t?t.last_word:"",declaration_statement:!1,declaration_assignment:!1,multiline_frame:!1,inline_frame:!1,if_block:!1,else_block:!1,class_start_block:!1,do_block:!1,do_while:!1,import_block:!1,in_case_statement:!1,in_case:!1,case_body:!1,case_block:!1,indentation_level:n,alignment:0,line_indent_level:t?t.line_indent_level:n,start_line_index:this._output.get_line_number(),ternary_depth:0}},e.prototype._reset=function(t){var e=t.match(/^[\t ]*/)[0];return this._last_last_text="",this._output=new w(this._options,e),this._output.raw=this._options.test_output_raw,this._flag_store=[],this.set_mode(o),e=new E(t,this._options),this._tokens=e.tokenize(),t},e.prototype.beautify=function(){var t,e,n;if(this._options.disabled)return this._source_text;for(t=this._reset(this._source_text),e=this._options.eol,"auto"===this._options.eol&&(e="\n",t&&x.lineBreak.test(t||"")&&(e=t.match(x.lineBreak)[0])),n=this._tokens.next();n;)this.handle_token(n),this._last_last_text=this._flags.last_token.text,this._flags.last_token=n,n=this._tokens.next();return this._output.get_code(e)},e.prototype.handle_token=function(t,e){t.type===p.START_EXPR?this.handle_start_expr(t):t.type===p.END_EXPR?this.handle_end_expr(t):t.type===p.START_BLOCK?this.handle_start_block(t):t.type===p.END_BLOCK?this.handle_end_block(t):t.type===p.WORD||t.type===p.RESERVED?this.handle_word(t):t.type===p.SEMICOLON?this.handle_semicolon(t):t.type===p.STRING?this.handle_string(t):t.type===p.EQUALS?this.handle_equals(t):t.type===p.OPERATOR?this.handle_operator(t):t.type===p.COMMA?this.handle_comma(t):t.type===p.BLOCK_COMMENT?this.handle_block_comment(t,e):t.type===p.COMMENT?this.handle_comment(t,e):t.type===p.DOT?this.handle_dot(t):t.type===p.EOF?this.handle_eof(t):(t.type,p.UNKNOWN,this.handle_unknown(t,e))},e.prototype.handle_whitespace_and_comments=function(t,e){var n,i,_,s=t.newlines,a=this._options.keep_array_indentation&&u(this._flags.mode);if(t.comments_before)for(n=t.comments_before.next();n;)this.handle_whitespace_and_comments(n,e),this.handle_token(n,e),n=t.comments_before.next();if(a)for(i=0;i<s;i+=1)this.print_newline(0<i,e);else if(this._options.max_preserve_newlines&&s>this._options.max_preserve_newlines&&(s=this._options.max_preserve_newlines),this._options.preserve_newlines&&1<s)for(this.print_newline(!1,e),_=1;_<s;_+=1)this.print_newline(!0,e)},y=["async","break","continue","return","throw","yield"],e.prototype.allow_wrap_or_preserved_newline=function(t,e){e=e!==undefined&&e,this._output.just_added_newline()||(e=this._options.preserve_newlines&&t.newlines||e,(l(this._flags.last_token.text,T)||l(t.text,T))&&(t=l(this._flags.last_token.text,T)&&l(this._options.operator_position,g)||l(t.text,T),e=e&&t),e?this.print_newline(!1,!0):this._options.wrap_line_length&&(c(this._flags.last_token,y)||this._output.set_wrap_point()))},e.prototype.print_newline=function(t,e){if(!e&&";"!==this._flags.last_token.text&&","!==this._flags.last_token.text&&"="!==this._flags.last_token.text&&(this._flags.last_token.type!==p.OPERATOR||"--"===this._flags.last_token.text||"++"===this._flags.last_token.text))for(var n=this._tokens.peek();!(this._flags.mode!==h||this._flags.if_block&&i(n,"else")||this._flags.do_block);)this.restore_mode();this._output.add_new_line(t)&&(this._flags.multiline_frame=!0)},e.prototype.print_token_line_indentation=function(t){this._output.just_added_newline()&&(this._options.keep_array_indentation&&t.newlines&&("["===t.text||u(this._flags.mode))?(this._output.current_line.set_indent(-1),this._output.current_line.push(t.whitespace_before),this._output.space_before_token=!1):this._output.set_indent(this._flags.indentation_level,this._flags.alignment)&&(this._flags.line_indent_level=this._flags.indentation_level))},e.prototype.print_token=function(t){var e;this._output.raw?this._output.add_raw_token(t):(this._options.comma_first&&t.previous&&t.previous.type===p.COMMA&&this._output.just_added_newline()&&","===this._output.previous_line.last()&&(e=this._output.previous_line.pop(),this._output.previous_line.is_empty()&&(this._output.previous_line.push(e),this._output.trim(!0),this._output.current_line.pop(),this._output.trim()),this.print_token_line_indentation(t),this._output.add_token(","),this._output.space_before_token=!0),this.print_token_line_indentation(t),this._output.non_breaking_space=!0,this._output.add_token(t.text),this._output.previous_token_wrapped&&(
-this._flags.multiline_frame=!0))},e.prototype.indent=function(){this._flags.indentation_level+=1,this._output.set_indent(this._flags.indentation_level,this._flags.alignment)},e.prototype.deindent=function(){0<this._flags.indentation_level&&(!this._flags.parent||this._flags.indentation_level>this._flags.parent.indentation_level)&&(--this._flags.indentation_level,this._output.set_indent(this._flags.indentation_level,this._flags.alignment))},e.prototype.set_mode=function(t){this._flags?(this._flag_store.push(this._flags),this._previous_flags=this._flags):this._previous_flags=this.create_flags(null,t),this._flags=this.create_flags(this._previous_flags,t),this._output.set_indent(this._flags.indentation_level,this._flags.alignment)},e.prototype.restore_mode=function(){0<this._flag_store.length&&(this._previous_flags=this._flags,this._flags=this._flag_store.pop(),this._previous_flags.mode===h&&R(this._output,this._previous_flags),this._output.set_indent(this._flags.indentation_level,this._flags.alignment))},e.prototype.start_of_object_property=function(){return this._flags.parent.mode===s&&this._flags.mode===h&&(":"===this._flags.last_token.text&&0===this._flags.ternary_depth||c(this._flags.last_token,["get","set"]))},e.prototype.start_of_statement=function(t){return!!(c(this._flags.last_token,["var","let","const"])&&t.type===p.WORD||i(this._flags.last_token,"do")||!(this._flags.parent.mode===s&&this._flags.mode===h)&&c(this._flags.last_token,y)&&!t.newlines||i(this._flags.last_token,"else")&&!(i(t,"if")&&!t.comments_before)||this._flags.last_token.type===p.END_EXPR&&(this._previous_flags.mode===r||this._previous_flags.mode===b)||this._flags.last_token.type===p.WORD&&this._flags.mode===o&&!this._flags.in_case&&!("--"===t.text||"++"===t.text)&&"function"!==this._last_last_text&&t.type!==p.WORD&&t.type!==p.RESERVED||this._flags.mode===s&&(":"===this._flags.last_token.text&&0===this._flags.ternary_depth||c(this._flags.last_token,["get","set"])))&&(this.set_mode(h),this.indent(),this.handle_whitespace_and_comments(t,!0),this.start_of_object_property()||this.allow_wrap_or_preserved_newline(t,c(t,["do","for","if","while"])),!0)},e.prototype.handle_start_expr=function(t){var e,n,i;if(this.start_of_statement(t)||this.handle_whitespace_and_comments(t),e=m,"["===t.text){if(this._flags.last_token.type===p.WORD||")"===this._flags.last_token.text)return c(this._flags.last_token,O)&&(this._output.space_before_token=!0),this.print_token(t),this.set_mode(e),this.indent(),void(this._options.space_in_paren&&(this._output.space_before_token=!0));e=a,u(this._flags.mode)&&("["!==this._flags.last_token.text&&(","!==this._flags.last_token.text||"]"!==this._last_last_text&&"}"!==this._last_last_text)||this._options.keep_array_indentation||this.print_newline()),l(this._flags.last_token.type,[p.START_EXPR,p.END_EXPR,p.WORD,p.OPERATOR,p.DOT])||(this._output.space_before_token=!0)}else this._flags.last_token.type===p.RESERVED?"for"===this._flags.last_token.text?(this._output.space_before_token=this._options.space_before_conditional,e=r):l(this._flags.last_token.text,["if","while","switch"])?(this._output.space_before_token=this._options.space_before_conditional,e=b):l(this._flags.last_word,["await","async"])?this._output.space_before_token=!0:"import"===this._flags.last_token.text&&""===t.whitespace_before?this._output.space_before_token=!1:!l(this._flags.last_token.text,O)&&"catch"!==this._flags.last_token.text||(this._output.space_before_token=!0):this._flags.last_token.type===p.EQUALS||this._flags.last_token.type===p.OPERATOR?this.start_of_object_property()||this.allow_wrap_or_preserved_newline(t):this._flags.last_token.type===p.WORD?(this._output.space_before_token=!1,n=this._tokens.peek(-3),this._options.space_after_named_function&&n&&(i=this._tokens.peek(-4),c(n,["async","function"])||"*"===n.text&&c(i,["async","function"])?this._output.space_before_token=!0:this._flags.mode===s?"{"!==n.text&&","!==n.text&&("*"!==n.text||"{"!==i.text&&","!==i.text)||(this._output.space_before_token=!0):this._flags.parent&&this._flags.parent.class_start_block&&(this._output.space_before_token=!0))):this.allow_wrap_or_preserved_newline(t),(this._flags.last_token.type===p.RESERVED&&("function"===this._flags.last_word||"typeof"===this._flags.last_word)||"*"===this._flags.last_token.text&&(l(this._last_last_text,["function","yield"])||this._flags.mode===s&&l(this._last_last_text,["{",","])))&&(this._output.space_before_token=this._options.space_after_anon_function);";"===this._flags.last_token.text||this._flags.last_token.type===p.START_BLOCK?this.print_newline():this._flags.last_token.type!==p.END_EXPR&&this._flags.last_token.type!==p.START_EXPR&&this._flags.last_token.type!==p.END_BLOCK&&"."!==this._flags.last_token.text&&this._flags.last_token.type!==p.COMMA||this.allow_wrap_or_preserved_newline(t,t.newlines),this.print_token(t),this.set_mode(e),this._options.space_in_paren&&(this._output.space_before_token=!0),this.indent()},e.prototype.handle_end_expr=function(t){for(;this._flags.mode===h;)this.restore_mode();this.handle_whitespace_and_comments(t),this._flags.multiline_frame&&this.allow_wrap_or_preserved_newline(t,"]"===t.text&&u(this._flags.mode)&&!this._options.keep_array_indentation),this._options.space_in_paren&&(this._flags.last_token.type!==p.START_EXPR||this._options.space_in_empty_paren?this._output.space_before_token=!0:(this._output.trim(),this._output.space_before_token=!1)),this.deindent(),this.print_token(t),this.restore_mode(),R(this._output,this._previous_flags),this._flags.do_while&&this._previous_flags.mode===b&&(this._previous_flags.mode=m,this._flags.do_block=!1,this._flags.do_while=!1)},e.prototype.handle_start_block=function(t){var e,n,i,_;if(this.handle_whitespace_and_comments(t),n=this._tokens.peek(),e=this._tokens.peek(1),"switch"===this._flags.last_word&&this._flags.last_token.type===p.END_EXPR?(this.set_mode(o),this._flags.in_case_statement=!0):this._flags.case_body?this.set_mode(o):e&&(l(e.text,[":",","]
-)&&l(n.type,[p.STRING,p.WORD,p.RESERVED])||l(n.text,["get","set","..."])&&l(e.type,[p.WORD,p.RESERVED]))?l(this._last_last_text,["class","interface"])&&!l(e.text,[":",","])?this.set_mode(o):this.set_mode(s):(this._flags.last_token.type!==p.OPERATOR||"=>"!==this._flags.last_token.text)&&(l(this._flags.last_token.type,[p.EQUALS,p.START_EXPR,p.COMMA,p.OPERATOR])||c(this._flags.last_token,["return","throw","import","default"]))?this.set_mode(s):this.set_mode(o),this._flags.last_token&&c(this._flags.last_token.previous,["class","extends"])&&(this._flags.class_start_block=!0),n=(e=!n.comments_before&&"}"===n.text)&&"function"===this._flags.last_word&&this._flags.last_token.type===p.END_EXPR,this._options.brace_preserve_inline){i=0,this._flags.inline_frame=!(_=null);do{if((_=this._tokens.peek((i+=1)-1)).newlines){this._flags.inline_frame=!1;break}}while(_.type!==p.EOF&&(_.type!==p.END_BLOCK||_.opened!==t))}("expand"===this._options.brace_style||"none"===this._options.brace_style&&t.newlines)&&!this._flags.inline_frame?this._flags.last_token.type!==p.OPERATOR&&(n||this._flags.last_token.type===p.EQUALS||c(this._flags.last_token,d)&&"else"!==this._flags.last_token.text)?this._output.space_before_token=!0:this.print_newline(!1,!0):(!u(this._previous_flags.mode)||this._flags.last_token.type!==p.START_EXPR&&this._flags.last_token.type!==p.COMMA||(this._flags.last_token.type!==p.COMMA&&!this._options.space_in_paren||(this._output.space_before_token=!0),(this._flags.last_token.type===p.COMMA||this._flags.last_token.type===p.START_EXPR&&this._flags.inline_frame)&&(this.allow_wrap_or_preserved_newline(t),this._previous_flags.multiline_frame=this._previous_flags.multiline_frame||this._flags.multiline_frame,this._flags.multiline_frame=!1)),this._flags.last_token.type!==p.OPERATOR&&this._flags.last_token.type!==p.START_EXPR&&(this._flags.last_token.type!==p.START_BLOCK||this._flags.inline_frame?this._output.space_before_token=!0:this.print_newline())),this.print_token(t),this.indent(),e||this._options.brace_preserve_inline&&this._flags.inline_frame||this.print_newline()},e.prototype.handle_end_block=function(t){for(this.handle_whitespace_and_comments(t);this._flags.mode===h;)this.restore_mode();var e=this._flags.last_token.type===p.START_BLOCK;this._flags.inline_frame&&!e?this._output.space_before_token=!0:"expand"===this._options.brace_style?e||this.print_newline():e||(u(this._flags.mode)&&this._options.keep_array_indentation?(this._options.keep_array_indentation=!1,this.print_newline(),this._options.keep_array_indentation=!0):this.print_newline()),this.restore_mode(),this.print_token(t)},e.prototype.handle_word=function(t){var e;if(t.type===p.RESERVED&&(l(t.text,["set","get"])&&this._flags.mode!==s||"import"===t.text&&l(this._tokens.peek().text,["(","."])||l(t.text,["as","from"])&&!this._flags.import_block||this._flags.mode===s&&":"===this._tokens.peek().text)&&(t.type=p.WORD),this.start_of_statement(t)?c(this._flags.last_token,["var","let","const"])&&t.type===p.WORD&&(this._flags.declaration_statement=!0):!t.newlines||A(this._flags.mode)||this._flags.last_token.type===p.OPERATOR&&"--"!==this._flags.last_token.text&&"++"!==this._flags.last_token.text||this._flags.last_token.type===p.EQUALS||!this._options.preserve_newlines&&c(this._flags.last_token,["var","let","const","set","get"])?this.handle_whitespace_and_comments(t):(this.handle_whitespace_and_comments(t),this.print_newline()),this._flags.do_block&&!this._flags.do_while){if(i(t,"while"))return this._output.space_before_token=!0,this.print_token(t),this._output.space_before_token=!0,void(this._flags.do_while=!0);this.print_newline(),this._flags.do_block=!1}if(this._flags.if_block)if(!this._flags.else_block&&i(t,"else"))this._flags.else_block=!0;else{for(;this._flags.mode===h;)this.restore_mode();this._flags.if_block=!1,this._flags.else_block=!1}return this._flags.in_case_statement&&c(t,["case","default"])?(this.print_newline(),this._flags.case_block||!this._flags.case_body&&!this._options.jslint_happy||this.deindent(),this._flags.case_body=!1,this.print_token(t),void(this._flags.in_case=!0)):(this._flags.last_token.type!==p.COMMA&&this._flags.last_token.type!==p.START_EXPR&&this._flags.last_token.type!==p.EQUALS&&this._flags.last_token.type!==p.OPERATOR||this.start_of_object_property()||this.allow_wrap_or_preserved_newline(t),i(t,"function")?((l(this._flags.last_token.text,["}",";"])||this._output.just_added_newline()&&!l(this._flags.last_token.text,["(","[","{",":","=",","])&&this._flags.last_token.type!==p.OPERATOR)&&(this._output.just_added_blankline()||t.comments_before||(this.print_newline(),this.print_newline(!0))),this._flags.last_token.type===p.RESERVED||this._flags.last_token.type===p.WORD?c(this._flags.last_token,["get","set","new","export"])||c(this._flags.last_token,y)||i(this._flags.last_token,"default")&&"export"===this._last_last_text||"declare"===this._flags.last_token.text?this._output.space_before_token=!0:this.print_newline():this._flags.last_token.type===p.OPERATOR||"="===this._flags.last_token.text?this._output.space_before_token=!0:!this._flags.multiline_frame&&(A(this._flags.mode)||u(this._flags.mode))||this.print_newline(),this.print_token(t),void(this._flags.last_word=t.text)):(e="NONE",this._flags.last_token.type===p.END_BLOCK?this._previous_flags.inline_frame?e="SPACE":!c(t,["else","catch","finally","from"])||"expand"===this._options.brace_style||"end-expand"===this._options.brace_style||"none"===this._options.brace_style&&t.newlines?e="NEWLINE":(e="SPACE",this._output.space_before_token=!0):this._flags.last_token.type===p.SEMICOLON&&this._flags.mode===o?e="NEWLINE":this._flags.last_token.type===p.SEMICOLON&&A(this._flags.mode)?e="SPACE":this._flags.last_token.type===p.STRING?e="NEWLINE":this._flags.last_token.type===p.RESERVED||this._flags.last_token.type===p.WORD||"*"===this._flags.last_token.text&&(l(this._last_last_text,["function","yield"])||this._flags.mode===s&&l(this._last_last_text,["{",","])
-)?e="SPACE":this._flags.last_token.type===p.START_BLOCK?e=this._flags.inline_frame?"SPACE":"NEWLINE":this._flags.last_token.type===p.END_EXPR&&(this._output.space_before_token=!0,e="NEWLINE"),c(t,O)&&")"!==this._flags.last_token.text&&(e=this._flags.inline_frame||"else"===this._flags.last_token.text||"export"===this._flags.last_token.text?"SPACE":"NEWLINE"),c(t,["else","catch","finally"])?(this._flags.last_token.type!==p.END_BLOCK||this._previous_flags.mode!==o||"expand"===this._options.brace_style||"end-expand"===this._options.brace_style||"none"===this._options.brace_style&&t.newlines)&&!this._flags.inline_frame?this.print_newline():(this._output.trim(!0),"}"!==this._output.current_line.last()&&this.print_newline(),this._output.space_before_token=!0):"NEWLINE"===e?c(this._flags.last_token,d)||"declare"===this._flags.last_token.text&&c(t,["var","let","const"])?this._output.space_before_token=!0:this._flags.last_token.type!==p.END_EXPR?this._flags.last_token.type===p.START_EXPR&&c(t,["var","let","const"])||":"===this._flags.last_token.text||(i(t,"if")&&i(t.previous,"else")?this._output.space_before_token=!0:this.print_newline()):c(t,O)&&")"!==this._flags.last_token.text&&this.print_newline():this._flags.multiline_frame&&u(this._flags.mode)&&","===this._flags.last_token.text&&"}"===this._last_last_text?this.print_newline():"SPACE"===e&&(this._output.space_before_token=!0),!t.previous||t.previous.type!==p.WORD&&t.previous.type!==p.RESERVED||(this._output.space_before_token=!0),this.print_token(t),this._flags.last_word=t.text,void(t.type===p.RESERVED&&("do"===t.text?this._flags.do_block=!0:"if"===t.text?this._flags.if_block=!0:"import"===t.text?this._flags.import_block=!0:this._flags.import_block&&i(t,"from")&&(this._flags.import_block=!1)))))},e.prototype.handle_semicolon=function(t){this.start_of_statement(t)?this._output.space_before_token=!1:this.handle_whitespace_and_comments(t);for(var e=this._tokens.peek();!(this._flags.mode!==h||this._flags.if_block&&i(e,"else")||this._flags.do_block);)this.restore_mode();this._flags.import_block&&(this._flags.import_block=!1),this.print_token(t)},e.prototype.handle_string=function(t){t.text.startsWith("`")&&0===t.newlines&&""===t.whitespace_before&&(")"===t.previous.text||this._flags.last_token.type===p.WORD)||(this.start_of_statement(t)?this._output.space_before_token=!0:(this.handle_whitespace_and_comments(t),this._flags.last_token.type===p.RESERVED||this._flags.last_token.type===p.WORD||this._flags.inline_frame?this._output.space_before_token=!0:this._flags.last_token.type===p.COMMA||this._flags.last_token.type===p.START_EXPR||this._flags.last_token.type===p.EQUALS||this._flags.last_token.type===p.OPERATOR?this.start_of_object_property()||this.allow_wrap_or_preserved_newline(t):!t.text.startsWith("`")||this._flags.last_token.type!==p.END_EXPR||"]"!==t.previous.text&&")"!==t.previous.text||0!==t.newlines?this.print_newline():this._output.space_before_token=!0)),this.print_token(t)},e.prototype.handle_equals=function(t){this.start_of_statement(t)||this.handle_whitespace_and_comments(t),this._flags.declaration_statement&&(this._flags.declaration_assignment=!0),this._output.space_before_token=!0,this.print_token(t),this._output.space_before_token=!0},e.prototype.handle_comma=function(t){this.handle_whitespace_and_comments(t,!0),this.print_token(t),this._output.space_before_token=!0,this._flags.declaration_statement?(A(this._flags.parent.mode)&&(this._flags.declaration_assignment=!1),this._flags.declaration_assignment?(this._flags.declaration_assignment=!1,this.print_newline(!1,!0)):this._options.comma_first&&this.allow_wrap_or_preserved_newline(t)):this._flags.mode===s||this._flags.mode===h&&this._flags.parent.mode===s?(this._flags.mode===h&&this.restore_mode(),this._flags.inline_frame||this.print_newline()):this._options.comma_first&&this.allow_wrap_or_preserved_newline(t)},e.prototype.handle_operator=function(t){var e,n,i,_,s,a,u="*"===t.text&&(c(this._flags.last_token,["function","yield"])||l(this._flags.last_token.type,[p.START_BLOCK,p.COMMA,p.END_BLOCK,p.SEMICOLON])),r=l(t.text,["-","+"])&&(l(this._flags.last_token.type,[p.START_BLOCK,p.START_EXPR,p.EQUALS,p.OPERATOR])||l(this._flags.last_token.text,O)||","===this._flags.last_token.text);if(this.start_of_statement(t)||this.handle_whitespace_and_comments(t,!u),"*"!==t.text||this._flags.last_token.type!==p.DOT)if("::"!==t.text){if(this._flags.last_token.type===p.OPERATOR&&l(this._options.operator_position,g)&&this.allow_wrap_or_preserved_newline(t),":"===t.text&&this._flags.in_case)return this.print_token(t),this._flags.in_case=!1,this._flags.case_body=!0,void(this._tokens.peek().type!==p.START_BLOCK?(this.indent(),this.print_newline(),this._flags.case_block=!1):(this._flags.case_block=!0,this._output.space_before_token=!0));if(a=!(n=e=!0),":"===t.text?0===this._flags.ternary_depth?e=!1:(--this._flags.ternary_depth,a=!0):"?"===t.text&&(this._flags.ternary_depth+=1),!r&&!u&&this._options.preserve_newlines&&l(t.text,T))switch(_=(i=":"===t.text)&&a,s=i&&!a,this._options.operator_position){case f.before_newline:return this._output.space_before_token=!s,this.print_token(t),i&&!_||this.allow_wrap_or_preserved_newline(t),void(this._output.space_before_token=!0);case f.after_newline:return this._output.space_before_token=!0,!i||_?this._tokens.peek().newlines?this.print_newline(!1,!0):this.allow_wrap_or_preserved_newline(t):this._output.space_before_token=!1,this.print_token(t),void(this._output.space_before_token=!0);case f.preserve_newline:return s||this.allow_wrap_or_preserved_newline(t),e=!(this._output.just_added_newline()||s),this._output.space_before_token=e,this.print_token(t),void(this._output.space_before_token=!0)}u?(this.allow_wrap_or_preserved_newline(t),e=!1,n=(a=this._tokens.peek())&&l(a.type,[p.WORD,p.RESERVED])):"..."===t.text?(this.allow_wrap_or_preserved_newline(t),e=this._flags.last_token.type===p.START_BLOCK,n=!1):(l(t.text,["--","++","!","~"])||r)&&(
-this._flags.last_token.type!==p.COMMA&&this._flags.last_token.type!==p.START_EXPR||this.allow_wrap_or_preserved_newline(t),n=e=!1,!t.newlines||"--"!==t.text&&"++"!==t.text&&"~"!==t.text||((u=c(this._flags.last_token,d)&&t.newlines)&&(this._previous_flags.if_block||this._previous_flags.else_block)&&this.restore_mode(),this.print_newline(u,!0)),";"===this._flags.last_token.text&&A(this._flags.mode)&&(e=!0),this._flags.last_token.type===p.RESERVED?e=!0:this._flags.last_token.type===p.END_EXPR?e=!("]"===this._flags.last_token.text&&("--"===t.text||"++"===t.text)):this._flags.last_token.type===p.OPERATOR&&(e=l(t.text,["--","-","++","+"])&&l(this._flags.last_token.text,["--","-","++","+"]),l(t.text,["+","-"])&&l(this._flags.last_token.text,["--","++"])&&(n=!0)),(this._flags.mode!==o||this._flags.inline_frame)&&this._flags.mode!==h||"{"!==this._flags.last_token.text&&";"!==this._flags.last_token.text||this.print_newline()),this._output.space_before_token=this._output.space_before_token||e,this.print_token(t),this._output.space_before_token=n}else this.print_token(t);else this.print_token(t)},e.prototype.handle_block_comment=function(t,e){return this._output.raw?(this._output.add_raw_token(t),void(t.directives&&"end"===t.directives.preserve&&(this._output.raw=this._options.test_output_raw))):t.directives?(this.print_newline(!1,e),this.print_token(t),"start"===t.directives.preserve&&(this._output.raw=!0),void this.print_newline(!1,!0)):void(x.newline.test(t.text)||t.newlines?this.print_block_commment(t,e):(this._output.space_before_token=!0,this.print_token(t),this._output.space_before_token=!0))},e.prototype.print_block_commment=function(t,e){var n,i,_,s=function(t){for(var e=[],n=(t=t.replace(x.allLineBreaks,"\n")).indexOf("\n");-1!==n;)e.push(t.substring(0,n)),n=(t=t.substring(n+1)).indexOf("\n");return t.length&&e.push(t),e}(t.text),a=t.whitespace_before,u=a.length;if(this.print_newline(!1,e),this.print_token_line_indentation(t),this._output.add_token(s[0]),this.print_newline(!1,e),1<s.length){for(i=function(t,e){for(var n=0;n<t.length;n++)if(t[n].trim().charAt(0)!==e)return!1;return!0}(s=s.slice(1),"*"),_=function(t,e){for(var n,i=0,_=t.length;i<_;i++)if((n=t[i])&&0!==n.indexOf(e))return!1;return!0}(s,a),i&&(this._flags.alignment=1),n=0;n<s.length;n++)i?(this.print_token_line_indentation(t),this._output.add_token(s[n].replace(/^\s+/g,""))):_&&s[n]?(this.print_token_line_indentation(t),this._output.add_token(s[n].substring(u))):(this._output.current_line.set_indent(-1),this._output.add_token(s[n])),this.print_newline(!1,e);this._flags.alignment=0}},e.prototype.handle_comment=function(t,e){t.newlines?this.print_newline(!1,e):this._output.trim(!0),this._output.space_before_token=!0,this.print_token(t),this.print_newline(!1,e)},e.prototype.handle_dot=function(t){this.start_of_statement(t)||this.handle_whitespace_and_comments(t,!0),this._flags.last_token.text.match("^[0-9]+$")&&(this._output.space_before_token=!0),c(this._flags.last_token,d)?this._output.space_before_token=!1:this.allow_wrap_or_preserved_newline(t,")"===this._flags.last_token.text&&this._options.break_chained_methods),this._options.unindent_chained_methods&&this._output.just_added_newline()&&this.deindent(),this.print_token(t)},e.prototype.handle_unknown=function(t,e){this.print_token(t),"\n"===t.text[t.text.length-1]&&this.print_newline(!1,e)},e.prototype.handle_eof=function(t){for(;this._flags.mode===h;)this.restore_mode();this.handle_whitespace_and_comments(t)},n.exports.Beautifier=e},function(t){function _(t){this.__parent=t,this.__character_count=0,this.__indent_count=-1,this.__alignment_count=0,this.__wrap_point_index=0,this.__wrap_point_character_count=0,this.__wrap_point_indent_count=-1,this.__wrap_point_alignment_count=0,this.__items=[]}function n(t,e){this.__cache=[""],this.__indent_size=t.indent_size,this.__indent_string=t.indent_char,t.indent_with_tabs||(this.__indent_string=new Array(t.indent_size+1).join(t.indent_char)),e=e||"",0<t.indent_level&&(e=new Array(t.indent_level+1).join(this.__indent_string)),this.__base_string=e,this.__base_string_length=e.length}function e(t,e){this.__indent_cache=new n(t,e),this.raw=!1,this._end_with_newline=t.end_with_newline,this.indent_size=t.indent_size,this.wrap_line_length=t.wrap_line_length,this.indent_empty_lines=t.indent_empty_lines,this.__lines=[],this.previous_line=null,this.current_line=null,this.next_line=new _(this),this.space_before_token=!1,this.non_breaking_space=!1,this.previous_token_wrapped=!1,this.__add_outputline()}_.prototype.clone_empty=function(){var t=new _(this.__parent);return t.set_indent(this.__indent_count,this.__alignment_count),t},_.prototype.item=function(t){return t<0?this.__items[this.__items.length+t]:this.__items[t]},_.prototype.has_match=function(t){for(var e=this.__items.length-1;0<=e;e--)if(this.__items[e].match(t))return!0;return!1},_.prototype.set_indent=function(t,e){this.is_empty()&&(this.__indent_count=t||0,this.__alignment_count=e||0,this.__character_count=this.__parent.get_indent_size(this.__indent_count,this.__alignment_count))},_.prototype._set_wrap_point=function(){this.__parent.wrap_line_length&&(this.__wrap_point_index=this.__items.length,this.__wrap_point_character_count=this.__character_count,this.__wrap_point_indent_count=this.__parent.next_line.__indent_count,this.__wrap_point_alignment_count=this.__parent.next_line.__alignment_count)},_.prototype._should_wrap=function(){return this.__wrap_point_index&&this.__character_count>this.__parent.wrap_line_length&&this.__wrap_point_character_count>this.__parent.next_line.__character_count},_.prototype._allow_wrap=function(){var t;return!!this._should_wrap()&&(this.__parent.add_new_line(),(t=this.__parent.current_line).set_indent(this.__wrap_point_indent_count,this.__wrap_point_alignment_count),t.__items=this.__items.slice(this.__wrap_point_index),this.__items=this.__items.slice(0,this.__wrap_point_index),t.__character_count+=this.__character_count-this.__wrap_point_character_count,
-this.__character_count=this.__wrap_point_character_count," "===t.__items[0]&&(t.__items.splice(0,1),--t.__character_count),!0)},_.prototype.is_empty=function(){return 0===this.__items.length},_.prototype.last=function(){return this.is_empty()?null:this.__items[this.__items.length-1]},_.prototype.push=function(t){this.__items.push(t);var e=t.lastIndexOf("\n");-1!==e?this.__character_count=t.length-e:this.__character_count+=t.length},_.prototype.pop=function(){var t=null;return this.is_empty()||(t=this.__items.pop(),this.__character_count-=t.length),t},_.prototype._remove_indent=function(){0<this.__indent_count&&(--this.__indent_count,this.__character_count-=this.__parent.indent_size)},_.prototype._remove_wrap_indent=function(){0<this.__wrap_point_indent_count&&--this.__wrap_point_indent_count},_.prototype.trim=function(){for(;" "===this.last();)this.__items.pop(),--this.__character_count},_.prototype.toString=function(){var t="";return this.is_empty()?this.__parent.indent_empty_lines&&(t=this.__parent.get_indent_string(this.__indent_count)):(t=this.__parent.get_indent_string(this.__indent_count,this.__alignment_count),t+=this.__items.join("")),t},n.prototype.get_indent_size=function(t,e){var n=this.__base_string_length;return n=(n=t<0?0:n)+t*this.__indent_size+(e=e||0)},n.prototype.get_indent_string=function(t,e){var n=this.__base_string;return e=e||0,t<0&&(t=0,n=""),e+=t*this.__indent_size,this.__ensure_cache(e),n+=this.__cache[e]},n.prototype.__ensure_cache=function(t){for(;t>=this.__cache.length;)this.__add_column()},n.prototype.__add_column=function(){var t,e=this.__cache.length,n="";this.__indent_size&&e>=this.__indent_size&&(e-=(t=Math.floor(e/this.__indent_size))*this.__indent_size,n=new Array(t+1).join(this.__indent_string)),e&&(n+=new Array(e+1).join(" ")),this.__cache.push(n)},e.prototype.__add_outputline=function(){this.previous_line=this.current_line,this.current_line=this.next_line.clone_empty(),this.__lines.push(this.current_line)},e.prototype.get_line_number=function(){return this.__lines.length},e.prototype.get_indent_string=function(t,e){return this.__indent_cache.get_indent_string(t,e)},e.prototype.get_indent_size=function(t,e){return this.__indent_cache.get_indent_size(t,e)},e.prototype.is_empty=function(){return!this.previous_line&&this.current_line.is_empty()},e.prototype.add_new_line=function(t){return!(this.is_empty()||!t&&this.just_added_newline())&&(this.raw||this.__add_outputline(),!0)},e.prototype.get_code=function(t){var e;return this.trim(!0),(e=this.current_line.pop())&&("\n"===e[e.length-1]&&(e=e.replace(/\n+$/g,"")),this.current_line.push(e)),this._end_with_newline&&this.__add_outputline(),e=this.__lines.join("\n"),e="\n"!==t?e.replace(/[\n]/g,t):e},e.prototype.set_wrap_point=function(){this.current_line._set_wrap_point()},e.prototype.set_indent=function(t,e){return this.next_line.set_indent(t=t||0,e=e||0),1<this.__lines.length?(this.current_line.set_indent(t,e),!0):(this.current_line.set_indent(),!1)},e.prototype.add_raw_token=function(t){for(var e=0;e<t.newlines;e++)this.__add_outputline();this.current_line.set_indent(-1),this.current_line.push(t.whitespace_before),this.current_line.push(t.text),this.space_before_token=!1,this.non_breaking_space=!1,this.previous_token_wrapped=!1},e.prototype.add_token=function(t){this.__add_space_before_token(),this.current_line.push(t),this.space_before_token=!1,this.non_breaking_space=!1,this.previous_token_wrapped=this.current_line._allow_wrap()},e.prototype.__add_space_before_token=function(){this.space_before_token&&!this.just_added_newline()&&(this.non_breaking_space||this.set_wrap_point(),this.current_line.push(" "))},e.prototype.remove_indent=function(t){for(var e=this.__lines.length;t<e;)this.__lines[t]._remove_indent(),t++;this.current_line._remove_wrap_indent()},e.prototype.trim=function(t){for(t=t!==undefined&&t,this.current_line.trim();t&&1<this.__lines.length&&this.current_line.is_empty();)this.__lines.pop(),this.current_line=this.__lines[this.__lines.length-1],this.current_line.trim();this.previous_line=1<this.__lines.length?this.__lines[this.__lines.length-2]:null},e.prototype.just_added_newline=function(){return this.current_line.is_empty()},e.prototype.just_added_blankline=function(){return this.is_empty()||this.current_line.is_empty()&&this.previous_line.is_empty()},e.prototype.ensure_empty_line_above=function(t,e){for(var n,i=this.__lines.length-2;0<=i&&!(n=this.__lines[i]).is_empty();){if(0!==n.item(0).indexOf(t)&&n.item(-1)!==e){this.__lines.splice(i+1,0,new _(this)),this.previous_line=this.__lines[this.__lines.length-2];break}i--}},t.exports.Output=e},function(t){t.exports.Token=function(t,e,n,i){this.type=t,this.text=e,this.comments_before=null,this.newlines=n||0,this.whitespace_before=i||"",this.parent=null,this.next=null,this.previous=null,this.opened=null,this.closed=null,this.directives=null}},function(t,e){var n="\\x24\\x30-\\x39\\x41-\\x5a\\x5f\\x61-\\x7a",
+YUI.add("moodle-atto_html-beautify",function(t,e){var s,a,r,n,i,_,u={};t.namespace("M.atto_html").beautify=u,function(){"use strict";var t,n=[function(t,e,n){var i=n(1).Beautifier,_=n(5).Options;t.exports=function(t,e){return new i(t,e).beautify()},t.exports.defaultOptions=function(){return new _}},function(n,_,t){var d,f,g,o,h,s,a,u,b,m,y,w=t(2).Output,k=t(3).Token,x=t(4),v=t(5).Options,E=t(7).Tokenizer,O=t(7).line_starters,T=t(7).positionable_operators,p=t(7).TOKEN;function l(t,e){return-1!==e.indexOf(t)}function i(t,e){return t&&t.type===p.RESERVED&&t.text===e}function c(t,e){return t&&t.type===p.RESERVED&&l(t.text,e)}function R(t,e){e.multiline_frame||e.mode===u||e.mode===b||t.remove_indent(e.start_line_index)}function r(t){return t===a}function A(t){return l(t,[m,u,b])}function e(t,e){e=e||{},this._source_text=t||"",this._output=null,this._tokens=null,this._last_last_text=null,this._flags=null,this._previous_flags=null,this._flag_store=null,this._options=new v(e)}d=["case","return","do","if","throw","else","await","break","continue","async"],f=function(t){for(var e={},n=0;n<t.length;n++)e[t[n].replace(/-/g,"_")]=t[n];return e}(["before-newline","after-newline","preserve-newline"]),g=[f.before_newline,f.preserve_newline],o="BlockStatement",h="Statement",s="ObjectLiteral",a="ArrayLiteral",u="ForInitializer",b="Conditional",m="Expression",e.prototype.create_flags=function(t,e){var n=0;return t&&(n=t.indentation_level,!this._output.just_added_newline()&&t.line_indent_level>n&&(n=t.line_indent_level)),{mode:e,parent:t,last_token:t?t.last_token:new k(p.START_BLOCK,""),last_word:t?t.last_word:"",declaration_statement:!1,declaration_assignment:!1,multiline_frame:!1,inline_frame:!1,if_block:!1,else_block:!1,class_start_block:!1,do_block:!1,do_while:!1,import_block:!1,in_case_statement:!1,in_case:!1,case_body:!1,case_block:!1,indentation_level:n,alignment:0,line_indent_level:t?t.line_indent_level:n,start_line_index:this._output.get_line_number(),ternary_depth:0}},e.prototype._reset=function(t){var e=t.match(/^[\t ]*/)[0];return this._last_last_text="",this._output=new w(this._options,e),this._output.raw=this._options.test_output_raw,this._flag_store=[],this.set_mode(o),e=new E(t,this._options),this._tokens=e.tokenize(),t},e.prototype.beautify=function(){var t,e,n;if(this._options.disabled)return this._source_text;for(t=this._reset(this._source_text),e=this._options.eol,"auto"===this._options.eol&&(e="\n",t&&x.lineBreak.test(t||"")&&(e=t.match(x.lineBreak)[0])),n=this._tokens.next();n;)this.handle_token(n),this._last_last_text=this._flags.last_token.text,this._flags.last_token=n,n=this._tokens.next();return this._output.get_code(e)},e.prototype.handle_token=function(t,e){t.type===p.START_EXPR?this.handle_start_expr(t):t.type===p.END_EXPR?this.handle_end_expr(t):t.type===p.START_BLOCK?this.handle_start_block(t):t.type===p.END_BLOCK?this.handle_end_block(t):t.type===p.WORD||t.type===p.RESERVED?this.handle_word(t):t.type===p.SEMICOLON?this.handle_semicolon(t):t.type===p.STRING?this.handle_string(t):t.type===p.EQUALS?this.handle_equals(t):t.type===p.OPERATOR?this.handle_operator(t):t.type===p.COMMA?this.handle_comma(t):t.type===p.BLOCK_COMMENT?this.handle_block_comment(t,e):t.type===p.COMMENT?this.handle_comment(t,e):t.type===p.DOT?this.handle_dot(t):t.type===p.EOF?this.handle_eof(t):(t.type,p.UNKNOWN,this.handle_unknown(t,e))},e.prototype.handle_whitespace_and_comments=function(t,e){var n,i,_,s=t.newlines,a=this._options.keep_array_indentation&&r(this._flags.mode);if(t.comments_before)for(n=t.comments_before.next();n;)this.handle_whitespace_and_comments(n,e),this.handle_token(n,e),n=t.comments_before.next();if(a)for(i=0;i<s;i+=1)this.print_newline(0<i,e);else if(this._options.max_preserve_newlines&&s>this._options.max_preserve_newlines&&(s=this._options.max_preserve_newlines),this._options.preserve_newlines&&1<s)for(this.print_newline(!1,e),_=1;_<s;_+=1)this.print_newline(!0,e)},y=["async","break","continue","return","throw","yield"],e.prototype.allow_wrap_or_preserved_newline=function(t,e){e=e!==undefined&&e,this._output.just_added_newline()||(e=this._options.preserve_newlines&&t.newlines||e,(l(this._flags.last_token.text,T)||l(t.text,T))&&(t=l(this._flags.last_token.text,T)&&l(this._options.operator_position,g)||l(t.text,T),e=e&&t),e?this.print_newline(!1,!0):this._options.wrap_line_length&&(c(this._flags.last_token,y)||this._output.set_wrap_point()))},e.prototype.print_newline=function(t,e){if(!e&&";"!==this._flags.last_token.text&&","!==this._flags.last_token.text&&"="!==this._flags.last_token.text&&(this._flags.last_token.type!==p.OPERATOR||"--"===this._flags.last_token.text||"++"===this._flags.last_token.text))for(var n=this._tokens.peek();!(this._flags.mode!==h||this._flags.if_block&&i(n,"else")||this._flags.do_block);)this.restore_mode();this._output.add_new_line(t)&&(this._flags.multiline_frame=!0)},e.prototype.print_token_line_indentation=function(t){this._output.just_added_newline()&&(this._options.keep_array_indentation&&t.newlines&&("["===t.text||r(this._flags.mode))?(this._output.current_line.set_indent(-1),this._output.current_line.push(t.whitespace_before),this._output.space_before_token=!1):this._output.set_indent(this._flags.indentation_level,this._flags.alignment)&&(this._flags.line_indent_level=this._flags.indentation_level))},e.prototype.print_token=function(t){var e;this._output.raw?this._output.add_raw_token(t):(this._options.comma_first&&t.previous&&t.previous.type===p.COMMA&&this._output.just_added_newline()&&","===this._output.previous_line.last()&&(e=this._output.previous_line.pop(),this._output.previous_line.is_empty()&&(this._output.previous_line.push(e),this._output.trim(!0),this._output.current_line.pop(),this._output.trim()),this.print_token_line_indentation(t),this._output.add_token(","),this._output.space_before_token=!0),this.print_token_line_indentation(t),this._output.non_breaking_space=!0,this._output.add_token(t.text),this._output.previous_token_wrapped&&(
+this._flags.multiline_frame=!0))},e.prototype.indent=function(){this._flags.indentation_level+=1,this._output.set_indent(this._flags.indentation_level,this._flags.alignment)},e.prototype.deindent=function(){0<this._flags.indentation_level&&(!this._flags.parent||this._flags.indentation_level>this._flags.parent.indentation_level)&&(--this._flags.indentation_level,this._output.set_indent(this._flags.indentation_level,this._flags.alignment))},e.prototype.set_mode=function(t){this._flags?(this._flag_store.push(this._flags),this._previous_flags=this._flags):this._previous_flags=this.create_flags(null,t),this._flags=this.create_flags(this._previous_flags,t),this._output.set_indent(this._flags.indentation_level,this._flags.alignment)},e.prototype.restore_mode=function(){0<this._flag_store.length&&(this._previous_flags=this._flags,this._flags=this._flag_store.pop(),this._previous_flags.mode===h&&R(this._output,this._previous_flags),this._output.set_indent(this._flags.indentation_level,this._flags.alignment))},e.prototype.start_of_object_property=function(){return this._flags.parent.mode===s&&this._flags.mode===h&&(":"===this._flags.last_token.text&&0===this._flags.ternary_depth||c(this._flags.last_token,["get","set"]))},e.prototype.start_of_statement=function(t){return!!(c(this._flags.last_token,["var","let","const"])&&t.type===p.WORD||i(this._flags.last_token,"do")||!(this._flags.parent.mode===s&&this._flags.mode===h)&&c(this._flags.last_token,y)&&!t.newlines||i(this._flags.last_token,"else")&&!(i(t,"if")&&!t.comments_before)||this._flags.last_token.type===p.END_EXPR&&(this._previous_flags.mode===u||this._previous_flags.mode===b)||this._flags.last_token.type===p.WORD&&this._flags.mode===o&&!this._flags.in_case&&!("--"===t.text||"++"===t.text)&&"function"!==this._last_last_text&&t.type!==p.WORD&&t.type!==p.RESERVED||this._flags.mode===s&&(":"===this._flags.last_token.text&&0===this._flags.ternary_depth||c(this._flags.last_token,["get","set"])))&&(this.set_mode(h),this.indent(),this.handle_whitespace_and_comments(t,!0),this.start_of_object_property()||this.allow_wrap_or_preserved_newline(t,c(t,["do","for","if","while"])),!0)},e.prototype.handle_start_expr=function(t){var e,n,i;if(this.start_of_statement(t)||this.handle_whitespace_and_comments(t),e=m,"["===t.text){if(this._flags.last_token.type===p.WORD||")"===this._flags.last_token.text)return c(this._flags.last_token,O)&&(this._output.space_before_token=!0),this.print_token(t),this.set_mode(e),this.indent(),void(this._options.space_in_paren&&(this._output.space_before_token=!0));e=a,r(this._flags.mode)&&("["!==this._flags.last_token.text&&(","!==this._flags.last_token.text||"]"!==this._last_last_text&&"}"!==this._last_last_text)||this._options.keep_array_indentation||this.print_newline()),l(this._flags.last_token.type,[p.START_EXPR,p.END_EXPR,p.WORD,p.OPERATOR,p.DOT])||(this._output.space_before_token=!0)}else this._flags.last_token.type===p.RESERVED?"for"===this._flags.last_token.text?(this._output.space_before_token=this._options.space_before_conditional,e=u):l(this._flags.last_token.text,["if","while","switch"])?(this._output.space_before_token=this._options.space_before_conditional,e=b):l(this._flags.last_word,["await","async"])?this._output.space_before_token=!0:"import"===this._flags.last_token.text&&""===t.whitespace_before?this._output.space_before_token=!1:!l(this._flags.last_token.text,O)&&"catch"!==this._flags.last_token.text||(this._output.space_before_token=!0):this._flags.last_token.type===p.EQUALS||this._flags.last_token.type===p.OPERATOR?this.start_of_object_property()||this.allow_wrap_or_preserved_newline(t):this._flags.last_token.type===p.WORD?(this._output.space_before_token=!1,n=this._tokens.peek(-3),this._options.space_after_named_function&&n&&(i=this._tokens.peek(-4),c(n,["async","function"])||"*"===n.text&&c(i,["async","function"])?this._output.space_before_token=!0:this._flags.mode===s?"{"!==n.text&&","!==n.text&&("*"!==n.text||"{"!==i.text&&","!==i.text)||(this._output.space_before_token=!0):this._flags.parent&&this._flags.parent.class_start_block&&(this._output.space_before_token=!0))):this.allow_wrap_or_preserved_newline(t),(this._flags.last_token.type===p.RESERVED&&("function"===this._flags.last_word||"typeof"===this._flags.last_word)||"*"===this._flags.last_token.text&&(l(this._last_last_text,["function","yield"])||this._flags.mode===s&&l(this._last_last_text,["{",","])))&&(this._output.space_before_token=this._options.space_after_anon_function);";"===this._flags.last_token.text||this._flags.last_token.type===p.START_BLOCK?this.print_newline():this._flags.last_token.type!==p.END_EXPR&&this._flags.last_token.type!==p.START_EXPR&&this._flags.last_token.type!==p.END_BLOCK&&"."!==this._flags.last_token.text&&this._flags.last_token.type!==p.COMMA||this.allow_wrap_or_preserved_newline(t,t.newlines),this.print_token(t),this.set_mode(e),this._options.space_in_paren&&(this._output.space_before_token=!0),this.indent()},e.prototype.handle_end_expr=function(t){for(;this._flags.mode===h;)this.restore_mode();this.handle_whitespace_and_comments(t),this._flags.multiline_frame&&this.allow_wrap_or_preserved_newline(t,"]"===t.text&&r(this._flags.mode)&&!this._options.keep_array_indentation),this._options.space_in_paren&&(this._flags.last_token.type!==p.START_EXPR||this._options.space_in_empty_paren?this._output.space_before_token=!0:(this._output.trim(),this._output.space_before_token=!1)),this.deindent(),this.print_token(t),this.restore_mode(),R(this._output,this._previous_flags),this._flags.do_while&&this._previous_flags.mode===b&&(this._previous_flags.mode=m,this._flags.do_block=!1,this._flags.do_while=!1)},e.prototype.handle_start_block=function(t){var e,n,i,_;if(this.handle_whitespace_and_comments(t),n=this._tokens.peek(),e=this._tokens.peek(1),"switch"===this._flags.last_word&&this._flags.last_token.type===p.END_EXPR?(this.set_mode(o),this._flags.in_case_statement=!0):this._flags.case_body?this.set_mode(o):e&&(l(e.text,[":",","]
+)&&l(n.type,[p.STRING,p.WORD,p.RESERVED])||l(n.text,["get","set","..."])&&l(e.type,[p.WORD,p.RESERVED]))?l(this._last_last_text,["class","interface"])&&!l(e.text,[":",","])?this.set_mode(o):this.set_mode(s):(this._flags.last_token.type!==p.OPERATOR||"=>"!==this._flags.last_token.text)&&(l(this._flags.last_token.type,[p.EQUALS,p.START_EXPR,p.COMMA,p.OPERATOR])||c(this._flags.last_token,["return","throw","import","default"]))?this.set_mode(s):this.set_mode(o),this._flags.last_token&&c(this._flags.last_token.previous,["class","extends"])&&(this._flags.class_start_block=!0),n=(e=!n.comments_before&&"}"===n.text)&&"function"===this._flags.last_word&&this._flags.last_token.type===p.END_EXPR,this._options.brace_preserve_inline){i=0,this._flags.inline_frame=!(_=null);do{if((_=this._tokens.peek((i+=1)-1)).newlines){this._flags.inline_frame=!1;break}}while(_.type!==p.EOF&&(_.type!==p.END_BLOCK||_.opened!==t))}("expand"===this._options.brace_style||"none"===this._options.brace_style&&t.newlines)&&!this._flags.inline_frame?this._flags.last_token.type!==p.OPERATOR&&(n||this._flags.last_token.type===p.EQUALS||c(this._flags.last_token,d)&&"else"!==this._flags.last_token.text)?this._output.space_before_token=!0:this.print_newline(!1,!0):(!r(this._previous_flags.mode)||this._flags.last_token.type!==p.START_EXPR&&this._flags.last_token.type!==p.COMMA||(this._flags.last_token.type!==p.COMMA&&!this._options.space_in_paren||(this._output.space_before_token=!0),(this._flags.last_token.type===p.COMMA||this._flags.last_token.type===p.START_EXPR&&this._flags.inline_frame)&&(this.allow_wrap_or_preserved_newline(t),this._previous_flags.multiline_frame=this._previous_flags.multiline_frame||this._flags.multiline_frame,this._flags.multiline_frame=!1)),this._flags.last_token.type!==p.OPERATOR&&this._flags.last_token.type!==p.START_EXPR&&(l(this._flags.last_token.type,[p.START_BLOCK,p.SEMICOLON])&&!this._flags.inline_frame?this.print_newline():this._output.space_before_token=!0)),this.print_token(t),this.indent(),e||this._options.brace_preserve_inline&&this._flags.inline_frame||this.print_newline()},e.prototype.handle_end_block=function(t){for(this.handle_whitespace_and_comments(t);this._flags.mode===h;)this.restore_mode();var e=this._flags.last_token.type===p.START_BLOCK;this._flags.inline_frame&&!e?this._output.space_before_token=!0:"expand"===this._options.brace_style?e||this.print_newline():e||(r(this._flags.mode)&&this._options.keep_array_indentation?(this._options.keep_array_indentation=!1,this.print_newline(),this._options.keep_array_indentation=!0):this.print_newline()),this.restore_mode(),this.print_token(t)},e.prototype.handle_word=function(t){var e;if(t.type===p.RESERVED&&(l(t.text,["set","get"])&&this._flags.mode!==s||"import"===t.text&&l(this._tokens.peek().text,["(","."])||l(t.text,["as","from"])&&!this._flags.import_block||this._flags.mode===s&&":"===this._tokens.peek().text)&&(t.type=p.WORD),this.start_of_statement(t)?c(this._flags.last_token,["var","let","const"])&&t.type===p.WORD&&(this._flags.declaration_statement=!0):!t.newlines||A(this._flags.mode)||this._flags.last_token.type===p.OPERATOR&&"--"!==this._flags.last_token.text&&"++"!==this._flags.last_token.text||this._flags.last_token.type===p.EQUALS||!this._options.preserve_newlines&&c(this._flags.last_token,["var","let","const","set","get"])?this.handle_whitespace_and_comments(t):(this.handle_whitespace_and_comments(t),this.print_newline()),this._flags.do_block&&!this._flags.do_while){if(i(t,"while"))return this._output.space_before_token=!0,this.print_token(t),this._output.space_before_token=!0,void(this._flags.do_while=!0);this.print_newline(),this._flags.do_block=!1}if(this._flags.if_block)if(!this._flags.else_block&&i(t,"else"))this._flags.else_block=!0;else{for(;this._flags.mode===h;)this.restore_mode();this._flags.if_block=!1,this._flags.else_block=!1}return this._flags.in_case_statement&&c(t,["case","default"])?(this.print_newline(),this._flags.case_block||!this._flags.case_body&&!this._options.jslint_happy||this.deindent(),this._flags.case_body=!1,this.print_token(t),void(this._flags.in_case=!0)):(this._flags.last_token.type!==p.COMMA&&this._flags.last_token.type!==p.START_EXPR&&this._flags.last_token.type!==p.EQUALS&&this._flags.last_token.type!==p.OPERATOR||this.start_of_object_property()||l(this._flags.last_token.text,["+","-"])&&":"===this._last_last_text&&this._flags.parent.mode===s||this.allow_wrap_or_preserved_newline(t),i(t,"function")?((l(this._flags.last_token.text,["}",";"])||this._output.just_added_newline()&&!l(this._flags.last_token.text,["(","[","{",":","=",","])&&this._flags.last_token.type!==p.OPERATOR)&&(this._output.just_added_blankline()||t.comments_before||(this.print_newline(),this.print_newline(!0))),this._flags.last_token.type===p.RESERVED||this._flags.last_token.type===p.WORD?c(this._flags.last_token,["get","set","new","export"])||c(this._flags.last_token,y)||i(this._flags.last_token,"default")&&"export"===this._last_last_text||"declare"===this._flags.last_token.text?this._output.space_before_token=!0:this.print_newline():this._flags.last_token.type===p.OPERATOR||"="===this._flags.last_token.text?this._output.space_before_token=!0:!this._flags.multiline_frame&&(A(this._flags.mode)||r(this._flags.mode))||this.print_newline(),this.print_token(t),void(this._flags.last_word=t.text)):(e="NONE",this._flags.last_token.type===p.END_BLOCK?this._previous_flags.inline_frame?e="SPACE":!c(t,["else","catch","finally","from"])||"expand"===this._options.brace_style||"end-expand"===this._options.brace_style||"none"===this._options.brace_style&&t.newlines?e="NEWLINE":(e="SPACE",this._output.space_before_token=!0):this._flags.last_token.type===p.SEMICOLON&&this._flags.mode===o?e="NEWLINE":this._flags.last_token.type===p.SEMICOLON&&A(this._flags.mode)?e="SPACE":this._flags.last_token.type===p.STRING?e="NEWLINE":this._flags.last_token.type===p.RESERVED||this._flags.last_token.type===p.WORD||"*"===this._flags.last_token.text&&(l(
+this._last_last_text,["function","yield"])||this._flags.mode===s&&l(this._last_last_text,["{",","]))?e="SPACE":this._flags.last_token.type===p.START_BLOCK?e=this._flags.inline_frame?"SPACE":"NEWLINE":this._flags.last_token.type===p.END_EXPR&&(this._output.space_before_token=!0,e="NEWLINE"),c(t,O)&&")"!==this._flags.last_token.text&&(e=this._flags.inline_frame||"else"===this._flags.last_token.text||"export"===this._flags.last_token.text?"SPACE":"NEWLINE"),c(t,["else","catch","finally"])?(this._flags.last_token.type!==p.END_BLOCK||this._previous_flags.mode!==o||"expand"===this._options.brace_style||"end-expand"===this._options.brace_style||"none"===this._options.brace_style&&t.newlines)&&!this._flags.inline_frame?this.print_newline():(this._output.trim(!0),"}"!==this._output.current_line.last()&&this.print_newline(),this._output.space_before_token=!0):"NEWLINE"===e?c(this._flags.last_token,d)||"declare"===this._flags.last_token.text&&c(t,["var","let","const"])?this._output.space_before_token=!0:this._flags.last_token.type!==p.END_EXPR?this._flags.last_token.type===p.START_EXPR&&c(t,["var","let","const"])||":"===this._flags.last_token.text||(i(t,"if")&&i(t.previous,"else")?this._output.space_before_token=!0:this.print_newline()):c(t,O)&&")"!==this._flags.last_token.text&&this.print_newline():this._flags.multiline_frame&&r(this._flags.mode)&&","===this._flags.last_token.text&&"}"===this._last_last_text?this.print_newline():"SPACE"===e&&(this._output.space_before_token=!0),!t.previous||t.previous.type!==p.WORD&&t.previous.type!==p.RESERVED||(this._output.space_before_token=!0),this.print_token(t),this._flags.last_word=t.text,void(t.type===p.RESERVED&&("do"===t.text?this._flags.do_block=!0:"if"===t.text?this._flags.if_block=!0:"import"===t.text?this._flags.import_block=!0:this._flags.import_block&&i(t,"from")&&(this._flags.import_block=!1)))))},e.prototype.handle_semicolon=function(t){this.start_of_statement(t)?this._output.space_before_token=!1:this.handle_whitespace_and_comments(t);for(var e=this._tokens.peek();!(this._flags.mode!==h||this._flags.if_block&&i(e,"else")||this._flags.do_block);)this.restore_mode();this._flags.import_block&&(this._flags.import_block=!1),this.print_token(t)},e.prototype.handle_string=function(t){t.text.startsWith("`")&&0===t.newlines&&""===t.whitespace_before&&(")"===t.previous.text||this._flags.last_token.type===p.WORD)||(this.start_of_statement(t)?this._output.space_before_token=!0:(this.handle_whitespace_and_comments(t),this._flags.last_token.type===p.RESERVED||this._flags.last_token.type===p.WORD||this._flags.inline_frame?this._output.space_before_token=!0:this._flags.last_token.type===p.COMMA||this._flags.last_token.type===p.START_EXPR||this._flags.last_token.type===p.EQUALS||this._flags.last_token.type===p.OPERATOR?this.start_of_object_property()||this.allow_wrap_or_preserved_newline(t):!t.text.startsWith("`")||this._flags.last_token.type!==p.END_EXPR||"]"!==t.previous.text&&")"!==t.previous.text||0!==t.newlines?this.print_newline():this._output.space_before_token=!0)),this.print_token(t)},e.prototype.handle_equals=function(t){this.start_of_statement(t)||this.handle_whitespace_and_comments(t),this._flags.declaration_statement&&(this._flags.declaration_assignment=!0),this._output.space_before_token=!0,this.print_token(t),this._output.space_before_token=!0},e.prototype.handle_comma=function(t){this.handle_whitespace_and_comments(t,!0),this.print_token(t),this._output.space_before_token=!0,this._flags.declaration_statement?(A(this._flags.parent.mode)&&(this._flags.declaration_assignment=!1),this._flags.declaration_assignment?(this._flags.declaration_assignment=!1,this.print_newline(!1,!0)):this._options.comma_first&&this.allow_wrap_or_preserved_newline(t)):this._flags.mode===s||this._flags.mode===h&&this._flags.parent.mode===s?(this._flags.mode===h&&this.restore_mode(),this._flags.inline_frame||this.print_newline()):this._options.comma_first&&this.allow_wrap_or_preserved_newline(t)},e.prototype.handle_operator=function(t){var e,n,i,_,s,a,r="*"===t.text&&(c(this._flags.last_token,["function","yield"])||l(this._flags.last_token.type,[p.START_BLOCK,p.COMMA,p.END_BLOCK,p.SEMICOLON])),u=l(t.text,["-","+"])&&(l(this._flags.last_token.type,[p.START_BLOCK,p.START_EXPR,p.EQUALS,p.OPERATOR])||l(this._flags.last_token.text,O)||","===this._flags.last_token.text);if(this.start_of_statement(t)||this.handle_whitespace_and_comments(t,!r),"*"!==t.text||this._flags.last_token.type!==p.DOT)if("::"!==t.text)if(l(t.text,["-","+"])&&this.start_of_object_property())this.print_token(t);else{if(this._flags.last_token.type===p.OPERATOR&&l(this._options.operator_position,g)&&this.allow_wrap_or_preserved_newline(t),":"===t.text&&this._flags.in_case)return this.print_token(t),this._flags.in_case=!1,this._flags.case_body=!0,void(this._tokens.peek().type!==p.START_BLOCK?(this.indent(),this.print_newline(),this._flags.case_block=!1):(this._flags.case_block=!0,this._output.space_before_token=!0));if(a=!(n=e=!0),":"===t.text?0===this._flags.ternary_depth?e=!1:(--this._flags.ternary_depth,a=!0):"?"===t.text&&(this._flags.ternary_depth+=1),!u&&!r&&this._options.preserve_newlines&&l(t.text,T))switch(_=(i=":"===t.text)&&a,s=i&&!a,this._options.operator_position){case f.before_newline:return this._output.space_before_token=!s,this.print_token(t),i&&!_||this.allow_wrap_or_preserved_newline(t),void(this._output.space_before_token=!0);case f.after_newline:return this._output.space_before_token=!0,!i||_?this._tokens.peek().newlines?this.print_newline(!1,!0):this.allow_wrap_or_preserved_newline(t):this._output.space_before_token=!1,this.print_token(t),void(this._output.space_before_token=!0);case f.preserve_newline:return s||this.allow_wrap_or_preserved_newline(t),e=!(this._output.just_added_newline()||s),this._output.space_before_token=e,this.print_token(t),void(this._output.space_before_token=!0)}r?(this.allow_wrap_or_preserved_newline(t),e=!1,n=(a=this._tokens.peek())&&l(a.type,[p.WORD,p.RESERVED])
+):"..."===t.text?(this.allow_wrap_or_preserved_newline(t),e=this._flags.last_token.type===p.START_BLOCK,n=!1):(l(t.text,["--","++","!","~"])||u)&&(this._flags.last_token.type!==p.COMMA&&this._flags.last_token.type!==p.START_EXPR||this.allow_wrap_or_preserved_newline(t),n=e=!1,!t.newlines||"--"!==t.text&&"++"!==t.text&&"~"!==t.text||((r=c(this._flags.last_token,d)&&t.newlines)&&(this._previous_flags.if_block||this._previous_flags.else_block)&&this.restore_mode(),this.print_newline(r,!0)),";"===this._flags.last_token.text&&A(this._flags.mode)&&(e=!0),this._flags.last_token.type===p.RESERVED?e=!0:this._flags.last_token.type===p.END_EXPR?e=!("]"===this._flags.last_token.text&&("--"===t.text||"++"===t.text)):this._flags.last_token.type===p.OPERATOR&&(e=l(t.text,["--","-","++","+"])&&l(this._flags.last_token.text,["--","-","++","+"]),l(t.text,["+","-"])&&l(this._flags.last_token.text,["--","++"])&&(n=!0)),(this._flags.mode!==o||this._flags.inline_frame)&&this._flags.mode!==h||"{"!==this._flags.last_token.text&&";"!==this._flags.last_token.text||this.print_newline()),this._output.space_before_token=this._output.space_before_token||e,this.print_token(t),this._output.space_before_token=n}else this.print_token(t);else this.print_token(t)},e.prototype.handle_block_comment=function(t,e){return this._output.raw?(this._output.add_raw_token(t),void(t.directives&&"end"===t.directives.preserve&&(this._output.raw=this._options.test_output_raw))):t.directives?(this.print_newline(!1,e),this.print_token(t),"start"===t.directives.preserve&&(this._output.raw=!0),void this.print_newline(!1,!0)):void(x.newline.test(t.text)||t.newlines?this.print_block_commment(t,e):(this._output.space_before_token=!0,this.print_token(t),this._output.space_before_token=!0))},e.prototype.print_block_commment=function(t,e){var n,i,_,s=function(t){for(var e=[],n=(t=t.replace(x.allLineBreaks,"\n")).indexOf("\n");-1!==n;)e.push(t.substring(0,n)),n=(t=t.substring(n+1)).indexOf("\n");return t.length&&e.push(t),e}(t.text),a=t.whitespace_before,r=a.length;if(this.print_newline(!1,e),this.print_token_line_indentation(t),this._output.add_token(s[0]),this.print_newline(!1,e),1<s.length){for(i=function(t,e){for(var n=0;n<t.length;n++)if(t[n].trim().charAt(0)!==e)return!1;return!0}(s=s.slice(1),"*"),_=function(t,e){for(var n,i=0,_=t.length;i<_;i++)if((n=t[i])&&0!==n.indexOf(e))return!1;return!0}(s,a),i&&(this._flags.alignment=1),n=0;n<s.length;n++)i?(this.print_token_line_indentation(t),this._output.add_token(s[n].replace(/^\s+/g,""))):_&&s[n]?(this.print_token_line_indentation(t),this._output.add_token(s[n].substring(r))):(this._output.current_line.set_indent(-1),this._output.add_token(s[n])),this.print_newline(!1,e);this._flags.alignment=0}},e.prototype.handle_comment=function(t,e){t.newlines?this.print_newline(!1,e):this._output.trim(!0),this._output.space_before_token=!0,this.print_token(t),this.print_newline(!1,e)},e.prototype.handle_dot=function(t){this.start_of_statement(t)||this.handle_whitespace_and_comments(t,!0),this._flags.last_token.text.match("^[0-9]+$")&&(this._output.space_before_token=!0),c(this._flags.last_token,d)?this._output.space_before_token=!1:this.allow_wrap_or_preserved_newline(t,")"===this._flags.last_token.text&&this._options.break_chained_methods),this._options.unindent_chained_methods&&this._output.just_added_newline()&&this.deindent(),this.print_token(t)},e.prototype.handle_unknown=function(t,e){this.print_token(t),"\n"===t.text[t.text.length-1]&&this.print_newline(!1,e)},e.prototype.handle_eof=function(t){for(;this._flags.mode===h;)this.restore_mode();this.handle_whitespace_and_comments(t)},n.exports.Beautifier=e},function(t){function _(t){this.__parent=t,this.__character_count=0,this.__indent_count=-1,this.__alignment_count=0,this.__wrap_point_index=0,this.__wrap_point_character_count=0,this.__wrap_point_indent_count=-1,this.__wrap_point_alignment_count=0,this.__items=[]}function n(t,e){this.__cache=[""],this.__indent_size=t.indent_size,this.__indent_string=t.indent_char,t.indent_with_tabs||(this.__indent_string=new Array(t.indent_size+1).join(t.indent_char)),e=e||"",0<t.indent_level&&(e=new Array(t.indent_level+1).join(this.__indent_string)),this.__base_string=e,this.__base_string_length=e.length}function e(t,e){this.__indent_cache=new n(t,e),this.raw=!1,this._end_with_newline=t.end_with_newline,this.indent_size=t.indent_size,this.wrap_line_length=t.wrap_line_length,this.indent_empty_lines=t.indent_empty_lines,this.__lines=[],this.previous_line=null,this.current_line=null,this.next_line=new _(this),this.space_before_token=!1,this.non_breaking_space=!1,this.previous_token_wrapped=!1,this.__add_outputline()}_.prototype.clone_empty=function(){var t=new _(this.__parent);return t.set_indent(this.__indent_count,this.__alignment_count),t},_.prototype.item=function(t){return t<0?this.__items[this.__items.length+t]:this.__items[t]},_.prototype.has_match=function(t){for(var e=this.__items.length-1;0<=e;e--)if(this.__items[e].match(t))return!0;return!1},_.prototype.set_indent=function(t,e){this.is_empty()&&(this.__indent_count=t||0,this.__alignment_count=e||0,this.__character_count=this.__parent.get_indent_size(this.__indent_count,this.__alignment_count))},_.prototype._set_wrap_point=function(){this.__parent.wrap_line_length&&(this.__wrap_point_index=this.__items.length,this.__wrap_point_character_count=this.__character_count,this.__wrap_point_indent_count=this.__parent.next_line.__indent_count,this.__wrap_point_alignment_count=this.__parent.next_line.__alignment_count)},_.prototype._should_wrap=function(){return this.__wrap_point_index&&this.__character_count>this.__parent.wrap_line_length&&this.__wrap_point_character_count>this.__parent.next_line.__character_count},_.prototype._allow_wrap=function(){var t;return!!this._should_wrap()&&(this.__parent.add_new_line(),(t=this.__parent.current_line).set_indent(this.__wrap_point_indent_count,this.__wrap_point_alignment_count),t.__items=this.__items.slice(
+this.__wrap_point_index),this.__items=this.__items.slice(0,this.__wrap_point_index),t.__character_count+=this.__character_count-this.__wrap_point_character_count,this.__character_count=this.__wrap_point_character_count," "===t.__items[0]&&(t.__items.splice(0,1),--t.__character_count),!0)},_.prototype.is_empty=function(){return 0===this.__items.length},_.prototype.last=function(){return this.is_empty()?null:this.__items[this.__items.length-1]},_.prototype.push=function(t){this.__items.push(t);var e=t.lastIndexOf("\n");-1!==e?this.__character_count=t.length-e:this.__character_count+=t.length},_.prototype.pop=function(){var t=null;return this.is_empty()||(t=this.__items.pop(),this.__character_count-=t.length),t},_.prototype._remove_indent=function(){0<this.__indent_count&&(--this.__indent_count,this.__character_count-=this.__parent.indent_size)},_.prototype._remove_wrap_indent=function(){0<this.__wrap_point_indent_count&&--this.__wrap_point_indent_count},_.prototype.trim=function(){for(;" "===this.last();)this.__items.pop(),--this.__character_count},_.prototype.toString=function(){var t="";return this.is_empty()?this.__parent.indent_empty_lines&&(t=this.__parent.get_indent_string(this.__indent_count)):(t=this.__parent.get_indent_string(this.__indent_count,this.__alignment_count),t+=this.__items.join("")),t},n.prototype.get_indent_size=function(t,e){var n=this.__base_string_length;return n=(n=t<0?0:n)+t*this.__indent_size+(e=e||0)},n.prototype.get_indent_string=function(t,e){var n=this.__base_string;return e=e||0,t<0&&(t=0,n=""),e+=t*this.__indent_size,this.__ensure_cache(e),n+=this.__cache[e]},n.prototype.__ensure_cache=function(t){for(;t>=this.__cache.length;)this.__add_column()},n.prototype.__add_column=function(){var t,e=this.__cache.length,n="";this.__indent_size&&e>=this.__indent_size&&(e-=(t=Math.floor(e/this.__indent_size))*this.__indent_size,n=new Array(t+1).join(this.__indent_string)),e&&(n+=new Array(e+1).join(" ")),this.__cache.push(n)},e.prototype.__add_outputline=function(){this.previous_line=this.current_line,this.current_line=this.next_line.clone_empty(),this.__lines.push(this.current_line)},e.prototype.get_line_number=function(){return this.__lines.length},e.prototype.get_indent_string=function(t,e){return this.__indent_cache.get_indent_string(t,e)},e.prototype.get_indent_size=function(t,e){return this.__indent_cache.get_indent_size(t,e)},e.prototype.is_empty=function(){return!this.previous_line&&this.current_line.is_empty()},e.prototype.add_new_line=function(t){return!(this.is_empty()||!t&&this.just_added_newline())&&(this.raw||this.__add_outputline(),!0)},e.prototype.get_code=function(t){var e;return this.trim(!0),(e=this.current_line.pop())&&("\n"===e[e.length-1]&&(e=e.replace(/\n+$/g,"")),this.current_line.push(e)),this._end_with_newline&&this.__add_outputline(),e=this.__lines.join("\n"),e="\n"!==t?e.replace(/[\n]/g,t):e},e.prototype.set_wrap_point=function(){this.current_line._set_wrap_point()},e.prototype.set_indent=function(t,e){return this.next_line.set_indent(t=t||0,e=e||0),1<this.__lines.length?(this.current_line.set_indent(t,e),!0):(this.current_line.set_indent(),!1)},e.prototype.add_raw_token=function(t){for(var e=0;e<t.newlines;e++)this.__add_outputline();this.current_line.set_indent(-1),this.current_line.push(t.whitespace_before),this.current_line.push(t.text),this.space_before_token=!1,this.non_breaking_space=!1,this.previous_token_wrapped=!1},e.prototype.add_token=function(t){this.__add_space_before_token(),this.current_line.push(t),this.space_before_token=!1,this.non_breaking_space=!1,this.previous_token_wrapped=this.current_line._allow_wrap()},e.prototype.__add_space_before_token=function(){this.space_before_token&&!this.just_added_newline()&&(this.non_breaking_space||this.set_wrap_point(),this.current_line.push(" "))},e.prototype.remove_indent=function(t){for(var e=this.__lines.length;t<e;)this.__lines[t]._remove_indent(),t++;this.current_line._remove_wrap_indent()},e.prototype.trim=function(t){for(t=t!==undefined&&t,this.current_line.trim();t&&1<this.__lines.length&&this.current_line.is_empty();)this.__lines.pop(),this.current_line=this.__lines[this.__lines.length-1],this.current_line.trim();this.previous_line=1<this.__lines.length?this.__lines[this.__lines.length-2]:null},e.prototype.just_added_newline=function(){return this.current_line.is_empty()},e.prototype.just_added_blankline=function(){return this.is_empty()||this.current_line.is_empty()&&this.previous_line.is_empty()},e.prototype.ensure_empty_line_above=function(t,e){for(var n,i=this.__lines.length-2;0<=i&&!(n=this.__lines[i]).is_empty();){if(0!==n.item(0).indexOf(t)&&n.item(-1)!==e){this.__lines.splice(i+1,0,new _(this)),this.previous_line=this.__lines[this.__lines.length-2];break}i--}},t.exports.Output=e},function(t){t.exports.Token=function(t,e,n,i){this.type=t,this.text=e,this.comments_before=null,this.newlines=n||0,this.whitespace_before=i||"",this.parent=null,this.next=null,this.previous=null,this.opened=null,this.closed=null,this.directives=null}},function(t,e){var n="\\x24\\x30-\\x39\\x41-\\x5a\\x5f\\x61-\\x7a",
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t.concat&&(e=t.concat()):"string"==typeof t&&(e=t.split(/[^a-zA-Z0-9_\/\-]+/)),e},e.prototype._get_boolean=function(t,e){t=this.raw_options[t],e=t===undefined?!!e:!!t;return e},e.prototype._get_characters=function(t,e){t=this.raw_options[t],e=e||"";return e="string"==typeof t?t.replace(/\\r/,"\r").replace(/\\n/,"\n").replace(/\\t/,"\t"):e},e.prototype._get_number=function(t,e){var t=this.raw_options[t];return e=parseInt(e,10),isNaN(e)&&(e=0),t=parseInt(t,10),t=isNaN(t)?e:t},e.prototype._get_selection=function(t,e,n){n=this._get_selection_list(t,e,n);if(1!==n.length)throw new Error("Invalid Option Value: The option '"+t+"' can only be one of the following values:\n"+e+"\nYou passed in: '"+this.raw_options[t]+"'");return n[0]},e.prototype._get_selection_list=function(t,e,n){if(!e||0===e.length)throw new Error("Selection list cannot be empty.");if(n=n||[e[0]],!this._is_valid_selection(n,e))throw new Error("Invalid Default Value!");n=this._get_array(t,n);if(!this._is_valid_selection(n,e))throw new Error("Invalid Option Value: The option '"+t+"' can contain only the following values:\n"+e+"\nYou passed in: '"+this.raw_options[t]+"'");return n},e.prototype._is_valid_selection=function(t,e){return t.length&&e.length&&!t.some(function(t){return-1===e.indexOf(t)})},t.exports.Options=e,t.exports.normalizeOpts=_,t.exports.mergeOpts=n},function(t,r,e){var o,i,n,p,l,c,d,_,f=e(8).InputScanner,g=e(9).Tokenizer,s=e(9).TOKEN,a=e(13).Directives,h=e(4),b=e(12).Pattern,m=e(14).TemplatablePattern;function u(t,e){return-1!==e.indexOf(t)}o={START_EXPR:"TK_START_EXPR",END_EXPR:"TK_END_EXPR",START_BLOCK:"TK_START_BLOCK",END_BLOCK:"TK_END_BLOCK",WORD:"TK_WORD",RESERVED:"TK_RESERVED",SEMICOLON:"TK_SEMICOLON",STRING:"TK_STRING",EQUALS:"TK_EQUALS",OPERATOR:"TK_OPERATOR",COMMA:"TK_COMMA",BLOCK_COMMENT:"TK_BLOCK_COMMENT",COMMENT:"TK_COMMENT",DOT:"TK_DOT",UNKNOWN:"TK_UNKNOWN",START:s.START,RAW:s.RAW,EOF:s.EOF},i=new a(/\/\*/,/\*\//),n=/0[xX][0123456789abcdefABCDEF_]*n?|0[oO][01234567_]*n?|0[bB][01_]*n?|\d[\d_]*n|(?:\.\d[\d_]*|\d[\d_]*\.?[\d_]*)(?:[eE][+-]?[\d_]+)?/,p=/[0-9]/,l=/[^\d\.]/,e=">>> === !== &&= ??= ||= << && >= ** != == <= >> || ?? |> < / - + > : & % ? ^ | *".split(" "),s=(s="\\?\\.(?!\\d) "+(s=(s=">>>= ... >>= <<= === >>> !== **= &&= ??= ||= => ^= :: /= << <= == && -= >= >> != -- += ** || ?? ++ %= &= *= |= |> = ! ? > < : / ^ - + * & % ~ |").replace(/[-[\]{}()*+?.,\\^$|#]/g,"\\$&"))).replace(/ /g,"|"),c=new RegExp(s),s=(a="continue,try,throw,return,var,let,const,if,switch,case,default,for,while,break,function,import,export".split(",")).concat(["do","in","of","else","get","set","new","catch","finally","typeof","yield","async","await","from","as","class","extends"]),d=new RegExp("^(?:"+s.join("|")+")$"),((s=function(t,e){
-g.call(this,t,e),this._patterns.whitespace=this._patterns.whitespace.matching(/\u00A0\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff/.source,/\u2028\u2029/.source),t=new b(this._input),e=new m(this._input).read_options(this._options),this.__patterns={template:e,identifier:e.starting_with(h.identifier).matching(h.identifierMatch),number:t.matching(n),punct:t.matching(c),comment:t.starting_with(/\/\//).until(/[\n\r\u2028\u2029]/),block_comment:t.starting_with(/\/\*/).until_after(/\*\//),html_comment_start:t.matching(/<!--/),html_comment_end:t.matching(/-->/),include:t.starting_with(/#include/).until_after(h.lineBreak),shebang:t.starting_with(/#!/).until_after(h.lineBreak),xml:t.matching(/[\s\S]*?<(\/?)([-a-zA-Z:0-9_.]+|{[^}]+?}|!\[CDATA\[[^\]]*?\]\]|)(\s*{[^}]+?}|\s+[-a-zA-Z:0-9_.]+|\s+[-a-zA-Z:0-9_.]+\s*=\s*('[^']*'|"[^"]*"|{([^{}]|{[^}]+?})+?}))*\s*(\/?)\s*>/),single_quote:e.until(/['\\\n\r\u2028\u2029]/),double_quote:e.until(/["\\\n\r\u2028\u2029]/),template_text:e.until(/[`\\$]/),template_expression:e.until(/[`}\\]/)}}).prototype=new g)._is_comment=function(t){return t.type===o.COMMENT||t.type===o.BLOCK_COMMENT||t.type===o.UNKNOWN},s.prototype._is_opening=function(t){return t.type===o.START_BLOCK||t.type===o.START_EXPR},s.prototype._is_closing=function(t,e){return(t.type===o.END_BLOCK||t.type===o.END_EXPR)&&e&&("]"===t.text&&"["===e.text||")"===t.text&&"("===e.text||"}"===t.text&&"{"===e.text)},s.prototype._reset=function(){_=!1},s.prototype._get_next_token=function(t,e){var n;return this._readWhitespace(),null===(n=this._input.peek())?this._create_token(o.EOF,""):this._read_non_javascript(n)||this._read_string(n)||this._read_word(t)||this._read_singles(n)||this._read_comment(n)||this._read_regexp(n,t)||this._read_xml(n,t)||this._read_punctuation()||this._create_token(o.UNKNOWN,this._input.next())},s.prototype._read_word=function(t){var e=this.__patterns.identifier.read();return""!==e?(e=e.replace(h.allLineBreaks,"\n"),t.type!==o.DOT&&(t.type!==o.RESERVED||"set"!==t.text&&"get"!==t.text)&&d.test(e)?"in"!==e&&"of"!==e||t.type!==o.WORD&&t.type!==o.STRING?this._create_token(o.RESERVED,e):this._create_token(o.OPERATOR,e):this._create_token(o.WORD,e)):""!==(e=this.__patterns.number.read())?this._create_token(o.WORD,e):void 0},s.prototype._read_singles=function(t){var e=null;return"("===t||"["===t?e=this._create_token(o.START_EXPR,t):")"===t||"]"===t?e=this._create_token(o.END_EXPR,t):"{"===t?e=this._create_token(o.START_BLOCK,t):"}"===t?e=this._create_token(o.END_BLOCK,t):";"===t?e=this._create_token(o.SEMICOLON,t):"."===t&&l.test(this._input.peek(1))?e=this._create_token(o.DOT,t):","===t&&(e=this._create_token(o.COMMA,t)),e&&this._input.next(),e},s.prototype._read_punctuation=function(){var t=this.__patterns.punct.read();if(""!==t)return"="===t?this._create_token(o.EQUALS,t):"?."===t?this._create_token(o.DOT,t):this._create_token(o.OPERATOR,t)},s.prototype._read_non_javascript=function(t){var e,n="";if("#"===t){if(this._is_first_token()&&(n=this.__patterns.shebang.read()))return this._create_token(o.UNKNOWN,n.trim()+"\n");if(n=this.__patterns.include.read())return this._create_token(o.UNKNOWN,n.trim()+"\n");if(t=this._input.next(),e="#",this._input.hasNext()&&this._input.testChar(p)){for(;e+=t=this._input.next(),this._input.hasNext()&&"#"!==t&&"="!==t;);return"#"===t||("["===this._input.peek()&&"]"===this._input.peek(1)?(e+="[]",this._input.next(),this._input.next()):"{"===this._input.peek()&&"}"===this._input.peek(1)&&(e+="{}",this._input.next(),this._input.next())),this._create_token(o.WORD,e)}this._input.back()}else if("<"===t&&this._is_first_token()){if(n=this.__patterns.html_comment_start.read()){for(;this._input.hasNext()&&!this._input.testChar(h.newline);)n+=this._input.next();return _=!0,this._create_token(o.COMMENT,n)}}else if(_&&"-"===t&&(n=this.__patterns.html_comment_end.read()))return _=!1,this._create_token(o.COMMENT,n);return null},s.prototype._read_comment=function(t){var e,n=null;return"/"===t&&(t="","*"===this._input.peek(1)?(t=this.__patterns.block_comment.read(),(e=i.get_directives(t))&&"start"===e.ignore&&(t+=i.readIgnored(this._input)),t=t.replace(h.allLineBreaks,"\n"),(n=this._create_token(o.BLOCK_COMMENT,t)).directives=e):"/"===this._input.peek(1)&&(t=this.__patterns.comment.read(),n=this._create_token(o.COMMENT,t))),n},s.prototype._read_string=function(t){var e;return"`"===t||"'"===t||'"'===t?(e=this._input.next(),this.has_char_escapes=!1,e+="`"===t?this._read_string_recursive("`",!0,"${"):this._read_string_recursive(t),this.has_char_escapes&&this._options.unescape_strings&&(e=function(t){var e="",n=0,i=new f(t),_=null;for(;i.hasNext();)if((_=i.match(/([\s]|[^\\]|\\\\)+/g))&&(e+=_[0]),"\\"===i.peek()){if(i.next(),"x"===i.peek())_=i.match(/x([0-9A-Fa-f]{2})/g);else{if("u"!==i.peek()){e+="\\",i.hasNext()&&(e+=i.next());continue}_=i.match(/u([0-9A-Fa-f]{4})/g)}if(!_)return t;if(126<(n=parseInt(_[1],16))&&n<=255&&0===_[0].indexOf("x"))return t;e+=0<=n&&n<32?"\\"+_[0]:34===n||39===n||92===n?"\\"+String.fromCharCode(n):String.fromCharCode(n)}return e}(e)),this._input.peek()===t&&(e+=this._input.next()),e=e.replace(h.allLineBreaks,"\n"),this._create_token(o.STRING,e)):null},s.prototype._allow_regexp_or_xml=function(t){return t.type===o.RESERVED&&u(t.text,["return","case","throw","else","do","typeof","yield"])||t.type===o.END_EXPR&&")"===t.text&&t.opened.previous.type===o.RESERVED&&u(t.opened.previous.text,["if","while","for"])||u(t.type,[o.COMMENT,o.START_EXPR,o.START_BLOCK,o.START,o.END_BLOCK,o.OPERATOR,o.EQUALS,o.EOF,o.SEMICOLON,o.COMMA])},s.prototype._read_regexp=function(t,e){var n,i,_;if("/"===t&&this._allow_regexp_or_xml(e)){for(n=this._input.next(),_=i=!1;this._input.hasNext()&&(i||_||this._input.peek()!==t)&&!this._input.testChar(h.newline);)n+=this._input.peek(),i?i=!1:(i="\\"===this._input.peek(),"["===this._input.peek()?_=!0:"]"===this._input.peek()&&(_=!1)),this._input.next();return this._input.peek()===t&&(n=(n+=this._input.next())+this._input.read(
-h.identifier)),this._create_token(o.STRING,n)}return null},s.prototype._read_xml=function(t,e){var n,i,_,s,a,u,r;if(this._options.e4x&&"<"===t&&this._allow_regexp_or_xml(e)&&(n="",i=this.__patterns.xml.read_match())){for(s=0===(_=i[2].replace(/^{\s+/,"{").replace(/\s+}$/,"}")).indexOf("{"),a=0;i&&(u=!!i[1],r=i[2],!(!!i[i.length-1]||"![CDATA["===r.slice(0,8))&&(r===_||s&&r.replace(/^{\s+/,"{").replace(/\s+}$/,"}"))&&(u?--a:++a),n+=i[0],!(a<=0));)i=this.__patterns.xml.read_match();return i||(n+=this._input.match(/[\s\S]*/g)[0]),n=n.replace(h.allLineBreaks,"\n"),this._create_token(o.STRING,n)}return null},s.prototype._read_string_recursive=function(t,e,n){var i,_,s,a;for("'"===t?_=this.__patterns.single_quote:'"'===t?_=this.__patterns.double_quote:"`"===t?_=this.__patterns.template_text:"}"===t&&(_=this.__patterns.template_expression),s=_.read(),a="";this._input.hasNext();){if((a=this._input.next())===t||!e&&h.newline.test(a)){this._input.back();break}"\\"===a&&this._input.hasNext()?("x"===(i=this._input.peek())||"u"===i?this.has_char_escapes=!0:"\r"===i&&"\n"===this._input.peek(1)&&this._input.next(),a+=this._input.next()):n&&("${"===n&&"$"===a&&"{"===this._input.peek()&&(a+=this._input.next()),n===a&&(a+="`"===t?this._read_string_recursive("}",e,"`"):this._read_string_recursive("`",e,"${"),this._input.hasNext()&&(a+=this._input.next()))),s+=a+=_.read()}return s},t.exports.Tokenizer=s,t.exports.TOKEN=o,t.exports.positionable_operators=e.slice(),t.exports.line_starters=a.slice()},function(t){var i=RegExp.prototype.hasOwnProperty("sticky");function e(t){this.__input=t||"",this.__input_length=this.__input.length,this.__position=0}e.prototype.restart=function(){this.__position=0},e.prototype.back=function(){0<this.__position&&--this.__position},e.prototype.hasNext=function(){return this.__position<this.__input_length},e.prototype.next=function(){var t=null;return this.hasNext()&&(t=this.__input.charAt(this.__position),this.__position+=1),t},e.prototype.peek=function(t){var e=null;return t=t||0,e=0<=(t+=this.__position)&&t<this.__input_length?this.__input.charAt(t):e},e.prototype.__match=function(t,e){t.lastIndex=e;var n=t.exec(this.__input);return!n||i&&t.sticky||n.index!==e&&(n=null),n},e.prototype.test=function(t,e){return e=e||0,0<=(e+=this.__position)&&e<this.__input_length&&!!this.__match(t,e)},e.prototype.testChar=function(t,e){e=this.peek(e);return t.lastIndex=0,null!==e&&t.test(e)},e.prototype.match=function(t){t=this.__match(t,this.__position);return t?this.__position+=t[0].length:t=null,t},e.prototype.read=function(t,e,n){var i,_="";return t&&(i=this.match(t))&&(_+=i[0]),!e||!i&&t||(_+=this.readUntil(e,n)),_},e.prototype.readUntil=function(t,e){var n=this.__position;return t.lastIndex=this.__position,(t=t.exec(this.__input))?(n=t.index,e&&(n+=t[0].length)):n=this.__input_length,e=this.__input.substring(this.__position,n),this.__position=n,e},e.prototype.readUntilAfter=function(t){return this.readUntil(t,!0)},e.prototype.get_regexp=function(t,e){var n=null,e=e&&i?"y":"g";return"string"==typeof t&&""!==t?n=new RegExp(t,e):t&&(n=new RegExp(t.source,e)),n},e.prototype.get_literal_regexp=function(t){return RegExp(t.replace(/[-\/\\^$*+?.()|[\]{}]/g,"\\$&"))},e.prototype.peekUntilAfter=function(t){var e=this.__position,t=this.readUntilAfter(t);return this.__position=e,t},e.prototype.lookBack=function(t){var e=this.__position-1;return e>=t.length&&this.__input.substring(e-t.length,e).toLowerCase()===t},t.exports.InputScanner=e},function(t,e,n){var i=n(8).InputScanner,s=n(3).Token,a=n(10).TokenStream,_=n(11).WhitespacePattern,u={START:"TK_START",RAW:"TK_RAW",EOF:"TK_EOF"},n=function(t,e){this._input=new i(t),this._options=e||{},this.__tokens=null,this._patterns={},this._patterns.whitespace=new _(this._input)};n.prototype.tokenize=function(){var t,e,n,i,_;for(this._input.restart(),this.__tokens=new a,this._reset(),e=new s(u.START,""),n=null,i=[],_=new a;e.type!==u.EOF;){for(t=this._get_next_token(e,n);this._is_comment(t);)_.add(t),t=this._get_next_token(e,n);_.isEmpty()||(t.comments_before=_,_=new a),t.parent=n,this._is_opening(t)?(i.push(n),n=t):n&&this._is_closing(t,n)&&((t.opened=n).closed=t,n=i.pop(),t.parent=n),(t.previous=e).next=t,this.__tokens.add(t),e=t}return this.__tokens},n.prototype._is_first_token=function(){return this.__tokens.isEmpty()},n.prototype._reset=function(){},n.prototype._get_next_token=function(t,e){this._readWhitespace();var n=this._input.read(/.+/g);return n?this._create_token(u.RAW,n):this._create_token(u.EOF,"")},n.prototype._is_comment=function(t){return!1},n.prototype._is_opening=function(t){return!1},n.prototype._is_closing=function(t,e){return!1},n.prototype._create_token=function(t,e){return new s(t,e,this._patterns.whitespace.newline_count,this._patterns.whitespace.whitespace_before_token)},n.prototype._readWhitespace=function(){return this._patterns.whitespace.read()},t.exports.Tokenizer=n,t.exports.TOKEN=u},function(t){function e(t){this.__tokens=[],this.__tokens_length=this.__tokens.length,this.__position=0,this.__parent_token=t}e.prototype.restart=function(){this.__position=0},e.prototype.isEmpty=function(){return 0===this.__tokens_length},e.prototype.hasNext=function(){return this.__position<this.__tokens_length},e.prototype.next=function(){var t=null;return this.hasNext()&&(t=this.__tokens[this.__position],this.__position+=1),t},e.prototype.peek=function(t){var e=null;return t=t||0,e=0<=(t+=this.__position)&&t<this.__tokens_length?this.__tokens[t]:e},e.prototype.add=function(t){this.__parent_token&&(t.parent=this.__parent_token),this.__tokens.push(t),this.__tokens_length+=1},t.exports.TokenStream=e},function(t,e,n){var i=n(12).Pattern;function _(t,e){i.call(this,t,e),e?this._line_regexp=this._input.get_regexp(e._line_regexp):this.__set_whitespace_patterns("",""),this.newline_count=0,this.whitespace_before_token=""}(_.prototype=new i).__set_whitespace_patterns=function(t,e){this._match_pattern=this._input.get_regexp("["+(t+="\\t ")+(e+="\\n\\r")+"]+",
-!0),this._newline_regexp=this._input.get_regexp("\\r\\n|["+e+"]")},_.prototype.read=function(){var t,e;return this.newline_count=0,this.whitespace_before_token=""," "===(t=this._input.read(this._match_pattern))?this.whitespace_before_token=" ":t&&(e=this.__split(this._newline_regexp,t),this.newline_count=e.length-1,this.whitespace_before_token=e[this.newline_count]),t},_.prototype.matching=function(t,e){var n=this._create();return n.__set_whitespace_patterns(t,e),n._update(),n},_.prototype._create=function(){return new _(this._input,this)},_.prototype.__split=function(t,e){for(var n=t.lastIndex=0,i=[],_=t.exec(e);_;)i.push(e.substring(n,_.index)),n=_.index+_[0].length,_=t.exec(e);return n<e.length?i.push(e.substring(n,e.length)):i.push(""),i},t.exports.WhitespacePattern=_},function(t){function e(t,e){this._input=t,this._starting_pattern=null,this._match_pattern=null,this._until_pattern=null,this._until_after=!1,e&&(this._starting_pattern=this._input.get_regexp(e._starting_pattern,!0),this._match_pattern=this._input.get_regexp(e._match_pattern,!0),this._until_pattern=this._input.get_regexp(e._until_pattern),this._until_after=e._until_after)}e.prototype.read=function(){var t=this._input.read(this._starting_pattern);return this._starting_pattern&&!t||(t+=this._input.read(this._match_pattern,this._until_pattern,this._until_after)),t},e.prototype.read_match=function(){return this._input.match(this._match_pattern)},e.prototype.until_after=function(t){var e=this._create();return e._until_after=!0,e._until_pattern=this._input.get_regexp(t),e._update(),e},e.prototype.until=function(t){var e=this._create();return e._until_after=!1,e._until_pattern=this._input.get_regexp(t),e._update(),e},e.prototype.starting_with=function(t){var e=this._create();return e._starting_pattern=this._input.get_regexp(t,!0),e._update(),e},e.prototype.matching=function(t){var e=this._create();return e._match_pattern=this._input.get_regexp(t,!0),e._update(),e},e.prototype._create=function(){return new e(this._input,this)},e.prototype._update=function(){},t.exports.Pattern=e},function(t){function e(t,e){t="string"==typeof t?t:t.source,e="string"==typeof e?e:e.source,this.__directives_block_pattern=new RegExp(t+/ beautify( \w+[:]\w+)+ /.source+e,"g"),this.__directive_pattern=/ (\w+)[:](\w+)/g,this.__directives_end_ignore_pattern=new RegExp(t+/\sbeautify\signore:end\s/.source+e,"g")}e.prototype.get_directives=function(t){var e,n;if(!t.match(this.__directives_block_pattern))return null;for(e={},this.__directive_pattern.lastIndex=0,n=this.__directive_pattern.exec(t);n;)e[n[1]]=n[2],n=this.__directive_pattern.exec(t);return e},e.prototype.readIgnored=function(t){return t.readUntilAfter(this.__directives_end_ignore_pattern)},t.exports.Directives=e},function(t,e,n){var i=n(12).Pattern,_={django:!1,erb:!1,handlebars:!1,php:!1,smarty:!1};function s(t,e){i.call(this,t,e),this.__template_pattern=null,this._disabled=Object.assign({},_),this._excluded=Object.assign({},_),e&&(this.__template_pattern=this._input.get_regexp(e.__template_pattern),this._excluded=Object.assign(this._excluded,e._excluded),this._disabled=Object.assign(this._disabled,e._disabled));e=new i(t);this.__patterns={handlebars_comment:e.starting_with(/{{!--/).until_after(/--}}/),handlebars_unescaped:e.starting_with(/{{{/).until_after(/}}}/),handlebars:e.starting_with(/{{/).until_after(/}}/),php:e.starting_with(/<\?(?:[= 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t="",t=this._match_pattern?this._input.read(this._starting_pattern):this._input.read(this._starting_pattern,this.__template_pattern),e=this._read_template();e;)this._match_pattern?e+=this._input.read(this._match_pattern):e+=this._input.readUntil(this.__template_pattern),t+=e,e=this._read_template();return this._until_after&&(t+=this._input.readUntilAfter(this._until_pattern)),t},s.prototype.__set_templated_pattern=function(){var t=[];this._disabled.php||t.push(this.__patterns.php._starting_pattern.source),this._disabled.handlebars||t.push(this.__patterns.handlebars._starting_pattern.source),this._disabled.erb||t.push(this.__patterns.erb._starting_pattern.source),this._disabled.django||(t.push(this.__patterns.django._starting_pattern.source),t.push(this.__patterns.django_value._starting_pattern.source),t.push(this.__patterns.django_comment._starting_pattern.source)),this._disabled.smarty||t.push(this.__patterns.smarty._starting_pattern.source),this._until_pattern&&t.push(this._until_pattern.source),this.__template_pattern=this._input.get_regexp("(?:"+t.join("|")+")")},s.prototype._read_template=function(){var t,e="",n=this._input.peek();return"<"===n?(t=this._input.peek(1),this._disabled.php||this._excluded.php||"?"!==t||(e=e||this.__patterns.php.read()),this._disabled.erb||this._excluded.erb||"%"!==t||(e=e||this.__patterns.erb.read())):"{"===n&&(this._disabled.handlebars||this._excluded.handlebars||(e=(e=(e=e||this.__patterns.handlebars_comment.read())||this.__patterns.handlebars_unescaped.read())||this.__patterns.handlebars.read()),this._disabled.django||(this._excluded.django||this._excluded.handlebars||(e=e||this.__patterns.django_value.read()),
-this._excluded.django||(e=(e=e||this.__patterns.django_comment.read())||this.__patterns.django.read())),this._disabled.smarty||this._disabled.django&&this._disabled.handlebars&&(e=(e=(e=e||this.__patterns.smarty_comment.read())||this.__patterns.smarty_literal.read())||this.__patterns.smarty.read())),e},t.exports.TemplatablePattern=s}],i={};t=function _(t){var e=i[t];return e!==undefined||(e=i[t]={exports:{}},n[t](e,e.exports,_)),e.exports}(0),s=t}(),t=s,void 0!==r?r.js_beautify=t:"undefined"!=typeof window?window.js_beautify=t:"undefined"!=typeof global&&(global.js_beautify=t),function(){"use strict";var t,n=[,,function(t){function _(t){this.__parent=t,this.__character_count=0,this.__indent_count=-1,this.__alignment_count=0,this.__wrap_point_index=0,this.__wrap_point_character_count=0,this.__wrap_point_indent_count=-1,this.__wrap_point_alignment_count=0,this.__items=[]}function 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t<0?this.__items[this.__items.length+t]:this.__items[t]},_.prototype.has_match=function(t){for(var e=this.__items.length-1;0<=e;e--)if(this.__items[e].match(t))return!0;return!1},_.prototype.set_indent=function(t,e){this.is_empty()&&(this.__indent_count=t||0,this.__alignment_count=e||0,this.__character_count=this.__parent.get_indent_size(this.__indent_count,this.__alignment_count))},_.prototype._set_wrap_point=function(){this.__parent.wrap_line_length&&(this.__wrap_point_index=this.__items.length,this.__wrap_point_character_count=this.__character_count,this.__wrap_point_indent_count=this.__parent.next_line.__indent_count,this.__wrap_point_alignment_count=this.__parent.next_line.__alignment_count)},_.prototype._should_wrap=function(){return this.__wrap_point_index&&this.__character_count>this.__parent.wrap_line_length&&this.__wrap_point_character_count>this.__parent.next_line.__character_count},_.prototype._allow_wrap=function(){var t;return!!this._should_wrap()&&(this.__parent.add_new_line(),(t=this.__parent.current_line).set_indent(this.__wrap_point_indent_count,this.__wrap_point_alignment_count),t.__items=this.__items.slice(this.__wrap_point_index),this.__items=this.__items.slice(0,this.__wrap_point_index),t.__character_count+=this.__character_count-this.__wrap_point_character_count,this.__character_count=this.__wrap_point_character_count," "===t.__items[0]&&(t.__items.splice(0,1),--t.__character_count),!0)},_.prototype.is_empty=function(){return 0===this.__items.length},_.prototype.last=function(){return this.is_empty()?null:this.__items[this.__items.length-1]},_.prototype.push=function(t){this.__items.push(t);var e=t.lastIndexOf("\n");-1!==e?this.__character_count=t.length-e:this.__character_count+=t.length},_.prototype.pop=function(){var t=null;return this.is_empty()||(t=this.__items.pop(),this.__character_count-=t.length),t},_.prototype._remove_indent=function(){0<this.__indent_count&&(--this.__indent_count,this.__character_count-=this.__parent.indent_size)},_.prototype._remove_wrap_indent=function(){0<this.__wrap_point_indent_count&&--this.__wrap_point_indent_count},_.prototype.trim=function(){for(;" "===this.last();)this.__items.pop(),--this.__character_count},_.prototype.toString=function(){var t="";return this.is_empty()?this.__parent.indent_empty_lines&&(t=this.__parent.get_indent_string(this.__indent_count)):(t=this.__parent.get_indent_string(this.__indent_count,this.__alignment_count),t+=this.__items.join("")),t},n.prototype.get_indent_size=function(t,e){var n=this.__base_string_length;return n=(n=t<0?0:n)+t*this.__indent_size+(e=e||0)},n.prototype.get_indent_string=function(t,e){var n=this.__base_string;return e=e||0,t<0&&(t=0,n=""),e+=t*this.__indent_size,this.__ensure_cache(e),n+=this.__cache[e]},n.prototype.__ensure_cache=function(t){for(;t>=this.__cache.length;)this.__add_column()},n.prototype.__add_column=function(){var t,e=this.__cache.length,n="";this.__indent_size&&e>=this.__indent_size&&(e-=(t=Math.floor(e/this.__indent_size))*this.__indent_size,n=new Array(t+1).join(this.__indent_string)),e&&(n+=new Array(e+1).join(" ")),this.__cache.push(n)},e.prototype.__add_outputline=function(){this.previous_line=this.current_line,this.current_line=this.next_line.clone_empty(),this.__lines.push(this.current_line)},e.prototype.get_line_number=function(){return this.__lines.length},e.prototype.get_indent_string=function(t,e){return this.__indent_cache.get_indent_string(t,e)},e.prototype.get_indent_size=function(t,e){return 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e=this.__lines.length;t<e;)this.__lines[t]._remove_indent(),t++;this.current_line._remove_wrap_indent()},e.prototype.trim=function(t){for(t=t!==undefined&&t,this.current_line.trim();t&&1<this.__lines.length&&this.current_line.is_empty();)this.__lines.pop(),this.current_line=this.__lines[this.__lines.length-1],this.current_line.trim();this.previous_line=1<this.__lines.length?this.__lines[this.__lines.length-2]:null},e.prototype.just_added_newline=function(){return this.current_line.is_empty()},e.prototype.just_added_blankline=function(){return this.is_empty()||this.current_line.is_empty()&&this.previous_line.is_empty()},e.prototype.ensure_empty_line_above=function(t,e){for(var n,i=this.__lines.length-2;0<=i&&!(n=this.__lines[i]).is_empty();){if(0!==n.item(0).indexOf(t)&&n.item(-1)!==e){this.__lines.splice(i+1,0,new _(this)),this.previous_line=this.__lines[this.__lines.length-2];break}i--}},t.exports.Output=e},,,,function(t){function e(t,e){this.raw_options=n(t,e),this.disabled=this._get_boolean("disabled"),this.eol=this._get_characters("eol","auto"),this.end_with_newline=this._get_boolean("end_with_newline"),this.indent_size=this._get_number("indent_size",4),this.indent_char=this._get_characters("indent_char"," "),this.indent_level=this._get_number("indent_level"),this.preserve_newlines=this._get_boolean("preserve_newlines",!0),this.max_preserve_newlines=this._get_number("max_preserve_newlines",32786),this.preserve_newlines||(this.max_preserve_newlines=0),this.indent_with_tabs=this._get_boolean("indent_with_tabs","\t"===this.indent_char),this.indent_with_tabs&&(this.indent_char="\t",1===this.indent_size&&(this.indent_size=4)),this.wrap_line_length=this._get_number("wrap_line_length",this._get_number("max_char")),this.indent_empty_lines=this._get_boolean("indent_empty_lines"),this.templating=this._get_selection_list("templating",["auto","none","django","erb","handlebars","php","smarty"],["auto"])}function n(t,e){var n,i={};for(n in t=_(t))n!==e&&(i[n]=t[n]);if(e&&t[e])for(n in t[e])i[n]=t[e][n];return i}function _(t){var e,n={};for(e in t)n[e.replace(/-/g,"_")]=t[e];return n}e.prototype._get_array=function(t,e){t=this.raw_options[t],e=e||[];return"object"==typeof t?null!==t&&"function"==typeof t.concat&&(e=t.concat()):"string"==typeof t&&(e=t.split(/[^a-zA-Z0-9_\/\-]+/)),e},e.prototype._get_boolean=function(t,e){t=this.raw_options[t],e=t===undefined?!!e:!!t;return e},e.prototype._get_characters=function(t,e){t=this.raw_options[t],e=e||"";return e="string"==typeof t?t.replace(/\\r/,"\r").replace(/\\n/,"\n").replace(/\\t/,"\t"):e},e.prototype._get_number=function(t,e){var t=this.raw_options[t];return e=parseInt(e,10),isNaN(e)&&(e=0),t=parseInt(t,10),t=isNaN(t)?e:t},e.prototype._get_selection=function(t,e,n){n=this._get_selection_list(t,e,n);if(1!==n.length)throw new Error("Invalid Option Value: The option '"+t+"' can only be one of the following values:\n"+e+"\nYou passed in: 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t,h,p,e,n,i,_,s,l,c,d,f,a,u,r,g,o;if(this._options.disabled)return this._source_text;for(t=this._source_text,"auto"===(h=this._options.eol)&&(h="\n",t&&w.test(t||"")&&(h=t.match(w)[0])),p=(t=t.replace(k,"\n")).match(/^[\t ]*/)[0],this._output=new b(this._options,p),this._input=new m(t),this._indentLevel=0,this._nestedLevel=0,this._ch=null,e=0,d=this._ch,f=c=l=s=_=i=n=!1;;){if(a=""!==this._input.read(v),u=d,this._ch=this._input.next(),"\\"===this._ch&&this._input.hasNext()&&(this._ch+=this._input.next()),d=this._ch,!this._ch)break;if("/"===this._ch&&"*"===this._input.peek())this._output.add_new_line(),this._input.back(),o=this._input.read(E),(r=y.get_directives(o))&&"start"===r.ignore&&(o+=y.readIgnored(this._input)),this.print_string(o),this.eatWhitespace(!0),this._output.add_new_line();else if("/"===this._ch&&"/"===this._input.peek())this._output.space_before_token=!0,this._input.back(),this.print_string(this._input.read(O)),this.eatWhitespace(!0);else if("@"===this._ch||"$"===this._ch)this.preserveSingleSpace(a),"{"===this._input.peek()?this.print_string(this._ch+this.eatString("}")):(this.print_string(this._ch),(r=this._input.peekUntilAfter(/[: ,;{}()[\]\/='"]/g)).match(/[ :]$/)&&(r=this.eatString(": ").replace(/\s$/,""),this.print_string(r),this._output.space_before_token=!0),"extend"===(r=r.replace(/\s$/,""))?s=!0:"import"===r&&(l=!0),r in this.NESTED_AT_RULE?(this._nestedLevel+=1,r in this.CONDITIONAL_GROUP_RULE&&(_=!0)):n||0!==e||-1===r.indexOf(":")||(i=!0,this.indent()));else if("#"===this._ch&&"{"===this._input.peek())this.preserveSingleSpace(a),this.print_string(this._ch+this.eatString("}"));else if("{"===this._ch)i&&(i=!1,this.outdent()),n=_?(_=!1,this._indentLevel>=this._nestedLevel):this._indentLevel>=this._nestedLevel-1,this._options.newline_between_rules&&n&&this._output.previous_line&&"{"!==this._output.previous_line.item(-1)&&this._output.ensure_empty_line_above("/",","),this._output.space_before_token=!0,"expand"===this._options.brace_style?(this._output.add_new_line(),this.print_string(this._ch),this.indent(),this._output.set_indent(this._indentLevel)):("("===u?this._output.space_before_token=!1:","!==u&&this.indent(),this.print_string(this._ch)),this.eatWhitespace(!0),this._output.add_new_line();else if("}"===this._ch)this.outdent(),this._output.add_new_line(),"{"===u&&this._output.trim(!0),s=l=!1,i&&(this.outdent(),i=!1),this.print_string(this._ch),n=!1,this._nestedLevel&&this._nestedLevel--,this.eatWhitespace(!0),this._output.add_new_line(),this._options.newline_between_rules&&!this._output.just_added_blankline()&&"}"!==this._input.peek()&&this._output.add_new_line(!0),")"===this._input.peek()&&(this._output.trim(!0),"expand"===this._options.brace_style&&this._output.add_new_line(!0));else if(":"===this._ch){for(g=0;g<this.NON_SEMICOLON_NEWLINE_PROPERTY.length;g++)if(this._input.lookBack(this.NON_SEMICOLON_NEWLINE_PROPERTY[g])){f=!0;break}!n&&!_||this._input.lookBack("&")||this.foundNestedPseudoClass()||this._input.lookBack("(")||s||0!==e?(this._input.lookBack(" ")&&(this._output.space_before_token=!0),
-":"===this._input.peek()?(this._ch=this._input.next(),this.print_string("::")):this.print_string(":")):(this.print_string(":"),i||(this._output.space_before_token=i=!0,this.eatWhitespace(!0),this.indent()))}else'"'===this._ch||"'"===this._ch?(this.preserveSingleSpace('"'===u||"'"===u||a),this.print_string(this._ch+this.eatString(this._ch)),this.eatWhitespace(!0)):";"===this._ch?(f=!1,0===e?(i&&(this.outdent(),i=!1),l=s=!1,this.print_string(this._ch),this.eatWhitespace(!0),"/"!==this._input.peek()&&this._output.add_new_line()):(this.print_string(this._ch),this.eatWhitespace(!0),this._output.space_before_token=!0)):"("===this._ch?this._input.lookBack("url")?(this.print_string(this._ch),this.eatWhitespace(),e++,this.indent(),this._ch=this._input.next(),")"===this._ch||'"'===this._ch||"'"===this._ch?this._input.back():this._ch&&(this.print_string(this._ch+this.eatString(")")),e&&(e--,this.outdent()))):(o=!1,this._input.lookBack("with")&&(o=!0),this.preserveSingleSpace(a||o),this.print_string(this._ch),i&&"$"===u&&this._options.selector_separator_newline?(this._output.add_new_line(),c=!0):(this.eatWhitespace(),e++,this.indent())):")"===this._ch?(e&&(e--,this.outdent()),c&&";"===this._input.peek()&&this._options.selector_separator_newline&&(c=!1,this.outdent(),this._output.add_new_line()),this.print_string(this._ch)):","===this._ch?(this.print_string(this._ch),this.eatWhitespace(!0),!this._options.selector_separator_newline||i&&!c||0!==e||l||s?this._output.space_before_token=!0:this._output.add_new_line()):">"!==this._ch&&"+"!==this._ch&&"~"!==this._ch||i||0!==e?"]"===this._ch?this.print_string(this._ch):"["===this._ch?(this.preserveSingleSpace(a),this.print_string(this._ch)):"="===this._ch?(this.eatWhitespace(),this.print_string("="),x.test(this._ch)&&(this._ch="")):"!"!==this._ch||this._input.lookBack("\\")?(this.preserveSingleSpace('"'===u||"'"===u||a),this.print_string(this._ch),!this._output.just_added_newline()&&"\n"===this._input.peek()&&f&&this._output.add_new_line()):(this._output.space_before_token=!0,this.print_string(this._ch)):this._options.space_around_combinator?(this._output.space_before_token=!0,this.print_string(this._ch),this._output.space_before_token=!0):(this.print_string(this._ch),this.eatWhitespace(),this._ch&&x.test(this._ch)&&(this._ch=""))}return this._output.get_code(h)},t.exports.Beautifier=i},function(t,e,n){var i=n(6).Options;function _(t){var e,n;for(i.call(this,t,"css"),this.selector_separator_newline=this._get_boolean("selector_separator_newline",!0),this.newline_between_rules=this._get_boolean("newline_between_rules",!0),t=this._get_boolean("space_around_selector_separator"),this.space_around_combinator=this._get_boolean("space_around_combinator")||t,e=this._get_selection_list("brace_style",["collapse","expand","end-expand","none","preserve-inline"]),this.brace_style="collapse",n=0;n<e.length;n++)"expand"!==e[n]?this.brace_style="collapse":this.brace_style=e[n]}_.prototype=new i,t.exports.Options=_}],i={};t=function _(t){var e=i[t];return e!==undefined||(e=i[t]={exports:{}},n[t](e,e.exports,_)),e.exports}(15),a=t}(),t=a,void 0!==r?r.css_beautify=t:"undefined"!=typeof window?window.css_beautify=t:"undefined"!=typeof global&&(global.css_beautify=t),function(){"use strict";var t,n=[,,function(t){function _(t){this.__parent=t,this.__character_count=0,this.__indent_count=-1,this.__alignment_count=0,this.__wrap_point_index=0,this.__wrap_point_character_count=0,this.__wrap_point_indent_count=-1,this.__wrap_point_alignment_count=0,this.__items=[]}function n(t,e){this.__cache=[""],this.__indent_size=t.indent_size,this.__indent_string=t.indent_char,t.indent_with_tabs||(this.__indent_string=new Array(t.indent_size+1).join(t.indent_char)),e=e||"",0<t.indent_level&&(e=new Array(t.indent_level+1).join(this.__indent_string)),this.__base_string=e,this.__base_string_length=e.length}function e(t,e){this.__indent_cache=new n(t,e),this.raw=!1,this._end_with_newline=t.end_with_newline,this.indent_size=t.indent_size,this.wrap_line_length=t.wrap_line_length,this.indent_empty_lines=t.indent_empty_lines,this.__lines=[],this.previous_line=null,this.current_line=null,this.next_line=new _(this),this.space_before_token=!1,this.non_breaking_space=!1,this.previous_token_wrapped=!1,this.__add_outputline()}_.prototype.clone_empty=function(){var t=new _(this.__parent);return t.set_indent(this.__indent_count,this.__alignment_count),t},_.prototype.item=function(t){return t<0?this.__items[this.__items.length+t]:this.__items[t]},_.prototype.has_match=function(t){for(var e=this.__items.length-1;0<=e;e--)if(this.__items[e].match(t))return!0;return!1},_.prototype.set_indent=function(t,e){this.is_empty()&&(this.__indent_count=t||0,this.__alignment_count=e||0,this.__character_count=this.__parent.get_indent_size(this.__indent_count,this.__alignment_count))},_.prototype._set_wrap_point=function(){this.__parent.wrap_line_length&&(this.__wrap_point_index=this.__items.length,this.__wrap_point_character_count=this.__character_count,this.__wrap_point_indent_count=this.__parent.next_line.__indent_count,this.__wrap_point_alignment_count=this.__parent.next_line.__alignment_count)},_.prototype._should_wrap=function(){return this.__wrap_point_index&&this.__character_count>this.__parent.wrap_line_length&&this.__wrap_point_character_count>this.__parent.next_line.__character_count},_.prototype._allow_wrap=function(){var t;return!!this._should_wrap()&&(this.__parent.add_new_line(),(t=this.__parent.current_line).set_indent(this.__wrap_point_indent_count,this.__wrap_point_alignment_count),t.__items=this.__items.slice(this.__wrap_point_index),this.__items=this.__items.slice(0,this.__wrap_point_index),t.__character_count+=this.__character_count-this.__wrap_point_character_count,this.__character_count=this.__wrap_point_character_count," "===t.__items[0]&&(t.__items.splice(0,1),--t.__character_count),!0)},_.prototype.is_empty=function(){return 0===this.__items.length},_.prototype.last=function(){return this.is_empty(
-)?null:this.__items[this.__items.length-1]},_.prototype.push=function(t){this.__items.push(t);var e=t.lastIndexOf("\n");-1!==e?this.__character_count=t.length-e:this.__character_count+=t.length},_.prototype.pop=function(){var t=null;return this.is_empty()||(t=this.__items.pop(),this.__character_count-=t.length),t},_.prototype._remove_indent=function(){0<this.__indent_count&&(--this.__indent_count,this.__character_count-=this.__parent.indent_size)},_.prototype._remove_wrap_indent=function(){0<this.__wrap_point_indent_count&&--this.__wrap_point_indent_count},_.prototype.trim=function(){for(;" "===this.last();)this.__items.pop(),--this.__character_count},_.prototype.toString=function(){var t="";return this.is_empty()?this.__parent.indent_empty_lines&&(t=this.__parent.get_indent_string(this.__indent_count)):(t=this.__parent.get_indent_string(this.__indent_count,this.__alignment_count),t+=this.__items.join("")),t},n.prototype.get_indent_size=function(t,e){var n=this.__base_string_length;return n=(n=t<0?0:n)+t*this.__indent_size+(e=e||0)},n.prototype.get_indent_string=function(t,e){var n=this.__base_string;return e=e||0,t<0&&(t=0,n=""),e+=t*this.__indent_size,this.__ensure_cache(e),n+=this.__cache[e]},n.prototype.__ensure_cache=function(t){for(;t>=this.__cache.length;)this.__add_column()},n.prototype.__add_column=function(){var t,e=this.__cache.length,n="";this.__indent_size&&e>=this.__indent_size&&(e-=(t=Math.floor(e/this.__indent_size))*this.__indent_size,n=new Array(t+1).join(this.__indent_string)),e&&(n+=new Array(e+1).join(" ")),this.__cache.push(n)},e.prototype.__add_outputline=function(){this.previous_line=this.current_line,this.current_line=this.next_line.clone_empty(),this.__lines.push(this.current_line)},e.prototype.get_line_number=function(){return this.__lines.length},e.prototype.get_indent_string=function(t,e){return this.__indent_cache.get_indent_string(t,e)},e.prototype.get_indent_size=function(t,e){return this.__indent_cache.get_indent_size(t,e)},e.prototype.is_empty=function(){return!this.previous_line&&this.current_line.is_empty()},e.prototype.add_new_line=function(t){return!(this.is_empty()||!t&&this.just_added_newline())&&(this.raw||this.__add_outputline(),!0)},e.prototype.get_code=function(t){var e;return this.trim(!0),(e=this.current_line.pop())&&("\n"===e[e.length-1]&&(e=e.replace(/\n+$/g,"")),this.current_line.push(e)),this._end_with_newline&&this.__add_outputline(),e=this.__lines.join("\n"),e="\n"!==t?e.replace(/[\n]/g,t):e},e.prototype.set_wrap_point=function(){this.current_line._set_wrap_point()},e.prototype.set_indent=function(t,e){return this.next_line.set_indent(t=t||0,e=e||0),1<this.__lines.length?(this.current_line.set_indent(t,e),!0):(this.current_line.set_indent(),!1)},e.prototype.add_raw_token=function(t){for(var e=0;e<t.newlines;e++)this.__add_outputline();this.current_line.set_indent(-1),this.current_line.push(t.whitespace_before),this.current_line.push(t.text),this.space_before_token=!1,this.non_breaking_space=!1,this.previous_token_wrapped=!1},e.prototype.add_token=function(t){this.__add_space_before_token(),this.current_line.push(t),this.space_before_token=!1,this.non_breaking_space=!1,this.previous_token_wrapped=this.current_line._allow_wrap()},e.prototype.__add_space_before_token=function(){this.space_before_token&&!this.just_added_newline()&&(this.non_breaking_space||this.set_wrap_point(),this.current_line.push(" "))},e.prototype.remove_indent=function(t){for(var e=this.__lines.length;t<e;)this.__lines[t]._remove_indent(),t++;this.current_line._remove_wrap_indent()},e.prototype.trim=function(t){for(t=t!==undefined&&t,this.current_line.trim();t&&1<this.__lines.length&&this.current_line.is_empty();)this.__lines.pop(),this.current_line=this.__lines[this.__lines.length-1],this.current_line.trim();this.previous_line=1<this.__lines.length?this.__lines[this.__lines.length-2]:null},e.prototype.just_added_newline=function(){return this.current_line.is_empty()},e.prototype.just_added_blankline=function(){return this.is_empty()||this.current_line.is_empty()&&this.previous_line.is_empty()},e.prototype.ensure_empty_line_above=function(t,e){for(var n,i=this.__lines.length-2;0<=i&&!(n=this.__lines[i]).is_empty();){if(0!==n.item(0).indexOf(t)&&n.item(-1)!==e){this.__lines.splice(i+1,0,new _(this)),this.previous_line=this.__lines[this.__lines.length-2];break}i--}},t.exports.Output=e},function(t){t.exports.Token=function(t,e,n,i){this.type=t,this.text=e,this.comments_before=null,this.newlines=n||0,this.whitespace_before=i||"",this.parent=null,this.next=null,this.previous=null,this.opened=null,this.closed=null,this.directives=null}},,,function(t){function e(t,e){this.raw_options=n(t,e),this.disabled=this._get_boolean("disabled"),this.eol=this._get_characters("eol","auto"),this.end_with_newline=this._get_boolean("end_with_newline"),this.indent_size=this._get_number("indent_size",4),this.indent_char=this._get_characters("indent_char"," "),this.indent_level=this._get_number("indent_level"),this.preserve_newlines=this._get_boolean("preserve_newlines",!0),this.max_preserve_newlines=this._get_number("max_preserve_newlines",32786),this.preserve_newlines||(this.max_preserve_newlines=0),this.indent_with_tabs=this._get_boolean("indent_with_tabs","\t"===this.indent_char),this.indent_with_tabs&&(this.indent_char="\t",1===this.indent_size&&(this.indent_size=4)),this.wrap_line_length=this._get_number("wrap_line_length",this._get_number("max_char")),this.indent_empty_lines=this._get_boolean("indent_empty_lines"),this.templating=this._get_selection_list("templating",["auto","none","django","erb","handlebars","php","smarty"],["auto"])}function n(t,e){var n,i={};for(n in t=_(t))n!==e&&(i[n]=t[n]);if(e&&t[e])for(n in t[e])i[n]=t[e][n];return i}function _(t){var e,n={};for(e in t)n[e.replace(/-/g,"_")]=t[e];return n}e.prototype._get_array=function(t,e){t=this.raw_options[t],e=e||[];return"object"==typeof t?null!==t&&"function"==typeof t.concat&&(e=t.concat()):"string"==typeof t&&(
-e=t.split(/[^a-zA-Z0-9_\/\-]+/)),e},e.prototype._get_boolean=function(t,e){t=this.raw_options[t],e=t===undefined?!!e:!!t;return e},e.prototype._get_characters=function(t,e){t=this.raw_options[t],e=e||"";return e="string"==typeof t?t.replace(/\\r/,"\r").replace(/\\n/,"\n").replace(/\\t/,"\t"):e},e.prototype._get_number=function(t,e){var t=this.raw_options[t];return e=parseInt(e,10),isNaN(e)&&(e=0),t=parseInt(t,10),t=isNaN(t)?e:t},e.prototype._get_selection=function(t,e,n){n=this._get_selection_list(t,e,n);if(1!==n.length)throw new Error("Invalid Option Value: The option '"+t+"' can only be one of the following values:\n"+e+"\nYou passed in: '"+this.raw_options[t]+"'");return n[0]},e.prototype._get_selection_list=function(t,e,n){if(!e||0===e.length)throw new Error("Selection list cannot be empty.");if(n=n||[e[0]],!this._is_valid_selection(n,e))throw new Error("Invalid Default Value!");n=this._get_array(t,n);if(!this._is_valid_selection(n,e))throw new Error("Invalid Option Value: The option '"+t+"' can contain only the following values:\n"+e+"\nYou passed in: '"+this.raw_options[t]+"'");return n},e.prototype._is_valid_selection=function(t,e){return t.length&&e.length&&!t.some(function(t){return-1===e.indexOf(t)})},t.exports.Options=e,t.exports.normalizeOpts=_,t.exports.mergeOpts=n},,function(t){var i=RegExp.prototype.hasOwnProperty("sticky");function e(t){this.__input=t||"",this.__input_length=this.__input.length,this.__position=0}e.prototype.restart=function(){this.__position=0},e.prototype.back=function(){0<this.__position&&--this.__position},e.prototype.hasNext=function(){return this.__position<this.__input_length},e.prototype.next=function(){var t=null;return this.hasNext()&&(t=this.__input.charAt(this.__position),this.__position+=1),t},e.prototype.peek=function(t){var e=null;return t=t||0,e=0<=(t+=this.__position)&&t<this.__input_length?this.__input.charAt(t):e},e.prototype.__match=function(t,e){t.lastIndex=e;var n=t.exec(this.__input);return!n||i&&t.sticky||n.index!==e&&(n=null),n},e.prototype.test=function(t,e){return e=e||0,0<=(e+=this.__position)&&e<this.__input_length&&!!this.__match(t,e)},e.prototype.testChar=function(t,e){e=this.peek(e);return t.lastIndex=0,null!==e&&t.test(e)},e.prototype.match=function(t){t=this.__match(t,this.__position);return t?this.__position+=t[0].length:t=null,t},e.prototype.read=function(t,e,n){var i,_="";return t&&(i=this.match(t))&&(_+=i[0]),!e||!i&&t||(_+=this.readUntil(e,n)),_},e.prototype.readUntil=function(t,e){var n=this.__position;return t.lastIndex=this.__position,(t=t.exec(this.__input))?(n=t.index,e&&(n+=t[0].length)):n=this.__input_length,e=this.__input.substring(this.__position,n),this.__position=n,e},e.prototype.readUntilAfter=function(t){return this.readUntil(t,!0)},e.prototype.get_regexp=function(t,e){var n=null,e=e&&i?"y":"g";return"string"==typeof t&&""!==t?n=new RegExp(t,e):t&&(n=new RegExp(t.source,e)),n},e.prototype.get_literal_regexp=function(t){return RegExp(t.replace(/[-\/\\^$*+?.()|[\]{}]/g,"\\$&"))},e.prototype.peekUntilAfter=function(t){var e=this.__position,t=this.readUntilAfter(t);return this.__position=e,t},e.prototype.lookBack=function(t){var e=this.__position-1;return e>=t.length&&this.__input.substring(e-t.length,e).toLowerCase()===t},t.exports.InputScanner=e},function(t,e,n){var i=n(8).InputScanner,s=n(3).Token,a=n(10).TokenStream,_=n(11).WhitespacePattern,u={START:"TK_START",RAW:"TK_RAW",EOF:"TK_EOF"},n=function(t,e){this._input=new i(t),this._options=e||{},this.__tokens=null,this._patterns={},this._patterns.whitespace=new _(this._input)};n.prototype.tokenize=function(){var t,e,n,i,_;for(this._input.restart(),this.__tokens=new a,this._reset(),e=new s(u.START,""),n=null,i=[],_=new a;e.type!==u.EOF;){for(t=this._get_next_token(e,n);this._is_comment(t);)_.add(t),t=this._get_next_token(e,n);_.isEmpty()||(t.comments_before=_,_=new a),t.parent=n,this._is_opening(t)?(i.push(n),n=t):n&&this._is_closing(t,n)&&((t.opened=n).closed=t,n=i.pop(),t.parent=n),(t.previous=e).next=t,this.__tokens.add(t),e=t}return this.__tokens},n.prototype._is_first_token=function(){return this.__tokens.isEmpty()},n.prototype._reset=function(){},n.prototype._get_next_token=function(t,e){this._readWhitespace();var n=this._input.read(/.+/g);return n?this._create_token(u.RAW,n):this._create_token(u.EOF,"")},n.prototype._is_comment=function(t){return!1},n.prototype._is_opening=function(t){return!1},n.prototype._is_closing=function(t,e){return!1},n.prototype._create_token=function(t,e){return new s(t,e,this._patterns.whitespace.newline_count,this._patterns.whitespace.whitespace_before_token)},n.prototype._readWhitespace=function(){return this._patterns.whitespace.read()},t.exports.Tokenizer=n,t.exports.TOKEN=u},function(t){function e(t){this.__tokens=[],this.__tokens_length=this.__tokens.length,this.__position=0,this.__parent_token=t}e.prototype.restart=function(){this.__position=0},e.prototype.isEmpty=function(){return 0===this.__tokens_length},e.prototype.hasNext=function(){return this.__position<this.__tokens_length},e.prototype.next=function(){var t=null;return this.hasNext()&&(t=this.__tokens[this.__position],this.__position+=1),t},e.prototype.peek=function(t){var e=null;return t=t||0,e=0<=(t+=this.__position)&&t<this.__tokens_length?this.__tokens[t]:e},e.prototype.add=function(t){this.__parent_token&&(t.parent=this.__parent_token),this.__tokens.push(t),this.__tokens_length+=1},t.exports.TokenStream=e},function(t,e,n){var i=n(12).Pattern;function _(t,e){i.call(this,t,e),e?this._line_regexp=this._input.get_regexp(e._line_regexp):this.__set_whitespace_patterns("",""),this.newline_count=0,this.whitespace_before_token=""}(_.prototype=new i).__set_whitespace_patterns=function(t,e){this._match_pattern=this._input.get_regexp("["+(t+="\\t ")+(e+="\\n\\r")+"]+",!0),this._newline_regexp=this._input.get_regexp("\\r\\n|["+e+"]")},_.prototype.read=function(){var t,e;return this.newline_count=0,this.whitespace_before_token=""," "===(t=this._input.read(
-this._match_pattern))?this.whitespace_before_token=" ":t&&(e=this.__split(this._newline_regexp,t),this.newline_count=e.length-1,this.whitespace_before_token=e[this.newline_count]),t},_.prototype.matching=function(t,e){var n=this._create();return n.__set_whitespace_patterns(t,e),n._update(),n},_.prototype._create=function(){return new _(this._input,this)},_.prototype.__split=function(t,e){for(var n=t.lastIndex=0,i=[],_=t.exec(e);_;)i.push(e.substring(n,_.index)),n=_.index+_[0].length,_=t.exec(e);return n<e.length?i.push(e.substring(n,e.length)):i.push(""),i},t.exports.WhitespacePattern=_},function(t){function e(t,e){this._input=t,this._starting_pattern=null,this._match_pattern=null,this._until_pattern=null,this._until_after=!1,e&&(this._starting_pattern=this._input.get_regexp(e._starting_pattern,!0),this._match_pattern=this._input.get_regexp(e._match_pattern,!0),this._until_pattern=this._input.get_regexp(e._until_pattern),this._until_after=e._until_after)}e.prototype.read=function(){var t=this._input.read(this._starting_pattern);return this._starting_pattern&&!t||(t+=this._input.read(this._match_pattern,this._until_pattern,this._until_after)),t},e.prototype.read_match=function(){return this._input.match(this._match_pattern)},e.prototype.until_after=function(t){var e=this._create();return e._until_after=!0,e._until_pattern=this._input.get_regexp(t),e._update(),e},e.prototype.until=function(t){var e=this._create();return e._until_after=!1,e._until_pattern=this._input.get_regexp(t),e._update(),e},e.prototype.starting_with=function(t){var e=this._create();return e._starting_pattern=this._input.get_regexp(t,!0),e._update(),e},e.prototype.matching=function(t){var e=this._create();return e._match_pattern=this._input.get_regexp(t,!0),e._update(),e},e.prototype._create=function(){return new e(this._input,this)},e.prototype._update=function(){},t.exports.Pattern=e},function(t){function e(t,e){t="string"==typeof t?t:t.source,e="string"==typeof e?e:e.source,this.__directives_block_pattern=new RegExp(t+/ beautify( \w+[:]\w+)+ /.source+e,"g"),this.__directive_pattern=/ (\w+)[:](\w+)/g,this.__directives_end_ignore_pattern=new RegExp(t+/\sbeautify\signore:end\s/.source+e,"g")}e.prototype.get_directives=function(t){var e,n;if(!t.match(this.__directives_block_pattern))return null;for(e={},this.__directive_pattern.lastIndex=0,n=this.__directive_pattern.exec(t);n;)e[n[1]]=n[2],n=this.__directive_pattern.exec(t);return e},e.prototype.readIgnored=function(t){return t.readUntilAfter(this.__directives_end_ignore_pattern)},t.exports.Directives=e},function(t,e,n){var i=n(12).Pattern,_={django:!1,erb:!1,handlebars:!1,php:!1,smarty:!1};function s(t,e){i.call(this,t,e),this.__template_pattern=null,this._disabled=Object.assign({},_),this._excluded=Object.assign({},_),e&&(this.__template_pattern=this._input.get_regexp(e.__template_pattern),this._excluded=Object.assign(this._excluded,e._excluded),this._disabled=Object.assign(this._disabled,e._disabled));e=new i(t);this.__patterns={handlebars_comment:e.starting_with(/{{!--/).until_after(/--}}/),handlebars_unescaped:e.starting_with(/{{{/).until_after(/}}}/),handlebars:e.starting_with(/{{/).until_after(/}}/),php:e.starting_with(/<\?(?:[= ]|php)/).until_after(/\?>/),erb:e.starting_with(/<%[^%]/).until_after(/[^%]%>/),django:e.starting_with(/{%/).until_after(/%}/),django_value:e.starting_with(/{{/).until_after(/}}/),django_comment:e.starting_with(/{#/).until_after(/#}/),smarty:e.starting_with(/{(?=[^}{\s\n])/).until_after(/[^\s\n]}/),smarty_comment:e.starting_with(/{\*/).until_after(/\*}/),smarty_literal:e.starting_with(/{literal}/).until_after(/{\/literal}/)}}(s.prototype=new i)._create=function(){return new s(this._input,this)},s.prototype._update=function(){this.__set_templated_pattern()},s.prototype.disable=function(t){var e=this._create();return e._disabled[t]=!0,e._update(),e},s.prototype.read_options=function(t){var e,n=this._create();for(e in _)n._disabled[e]=-1===t.templating.indexOf(e);return n._update(),n},s.prototype.exclude=function(t){var e=this._create();return e._excluded[t]=!0,e._update(),e},s.prototype.read=function(){for(var t="",t=this._match_pattern?this._input.read(this._starting_pattern):this._input.read(this._starting_pattern,this.__template_pattern),e=this._read_template();e;)this._match_pattern?e+=this._input.read(this._match_pattern):e+=this._input.readUntil(this.__template_pattern),t+=e,e=this._read_template();return this._until_after&&(t+=this._input.readUntilAfter(this._until_pattern)),t},s.prototype.__set_templated_pattern=function(){var t=[];this._disabled.php||t.push(this.__patterns.php._starting_pattern.source),this._disabled.handlebars||t.push(this.__patterns.handlebars._starting_pattern.source),this._disabled.erb||t.push(this.__patterns.erb._starting_pattern.source),this._disabled.django||(t.push(this.__patterns.django._starting_pattern.source),t.push(this.__patterns.django_value._starting_pattern.source),t.push(this.__patterns.django_comment._starting_pattern.source)),this._disabled.smarty||t.push(this.__patterns.smarty._starting_pattern.source),this._until_pattern&&t.push(this._until_pattern.source),this.__template_pattern=this._input.get_regexp("(?:"+t.join("|")+")")},s.prototype._read_template=function(){var t,e="",n=this._input.peek();return"<"===n?(t=this._input.peek(1),this._disabled.php||this._excluded.php||"?"!==t||(e=e||this.__patterns.php.read()),this._disabled.erb||this._excluded.erb||"%"!==t||(e=e||this.__patterns.erb.read())):"{"===n&&(this._disabled.handlebars||this._excluded.handlebars||(e=(e=(e=e||this.__patterns.handlebars_comment.read())||this.__patterns.handlebars_unescaped.read())||this.__patterns.handlebars.read()),this._disabled.django||(this._excluded.django||this._excluded.handlebars||(e=e||this.__patterns.django_value.read()),this._excluded.django||(e=(e=e||this.__patterns.django_comment.read())||this.__patterns.django.read())),this._disabled.smarty||this._disabled.django&&this._disabled.handlebars&&(e=(e=(
-e=e||this.__patterns.smarty_comment.read())||this.__patterns.smarty_literal.read())||this.__patterns.smarty.read())),e},t.exports.TemplatablePattern=s},,,,function(t,e,n){var _=n(19).Beautifier,i=n(20).Options;t.exports=function(t,e,n,i){return new _(t,e,n,i).beautify()},t.exports.defaultOptions=function(){return new i}},function(e,n,t){var _,s,o,i,u,r=t(20).Options,d=t(2).Output,f=t(21).Tokenizer,h=t(21).TOKEN,g=/\r\n|[\r\n]/,b=/\r\n|[\r\n]/g,p=function(t,e){this.indent_level=0,this.alignment_size=0,this.max_preserve_newlines=t.max_preserve_newlines,this.preserve_newlines=t.preserve_newlines,this._output=new d(t,e)};function a(t,e){return-1!==e.indexOf(t)}function m(t,e,n){this.parent=t||null,this.tag=e?e.tag_name:"",this.indent_level=n||0,this.parser_token=e||null}function l(t){this._printer=t,this._current_frame=null}function c(t,e,n,i){this._source_text=t||"",e=e||{},this._js_beautify=n,this._css_beautify=i,this._tag_stack=null;t=new r(e,"html");this._options=t,this._is_wrap_attributes_force="force"===this._options.wrap_attributes.substr(0,"force".length),this._is_wrap_attributes_force_expand_multiline="force-expand-multiline"===this._options.wrap_attributes,this._is_wrap_attributes_force_aligned="force-aligned"===this._options.wrap_attributes,this._is_wrap_attributes_aligned_multiple="aligned-multiple"===this._options.wrap_attributes,this._is_wrap_attributes_preserve="preserve"===this._options.wrap_attributes.substr(0,"preserve".length),this._is_wrap_attributes_preserve_aligned="preserve-aligned"===this._options.wrap_attributes}p.prototype.current_line_has_match=function(t){return this._output.current_line.has_match(t)},p.prototype.set_space_before_token=function(t,e){this._output.space_before_token=t,this._output.non_breaking_space=e},p.prototype.set_wrap_point=function(){this._output.set_indent(this.indent_level,this.alignment_size),this._output.set_wrap_point()},p.prototype.add_raw_token=function(t){this._output.add_raw_token(t)},p.prototype.print_preserved_newlines=function(t){var e,n=0;for(t.type!==h.TEXT&&t.previous.type!==h.TEXT&&(n=t.newlines?1:0),this.preserve_newlines&&(n=t.newlines<this.max_preserve_newlines+1?t.newlines:this.max_preserve_newlines+1),e=0;e<n;e++)this.print_newline(0<e);return 0!==n},p.prototype.traverse_whitespace=function(t){return!(!t.whitespace_before&&!t.newlines)&&(this.print_preserved_newlines(t)||(this._output.space_before_token=!0),!0)},p.prototype.previous_token_wrapped=function(){return this._output.previous_token_wrapped},p.prototype.print_newline=function(t){this._output.add_new_line(t)},p.prototype.print_token=function(t){t.text&&(this._output.set_indent(this.indent_level,this.alignment_size),this._output.add_token(t.text))},p.prototype.indent=function(){this.indent_level++},p.prototype.get_full_indent=function(t){return(t=this.indent_level+(t||0))<1?"":this._output.get_indent_string(t)},_=function(t){for(var e=null,n=t.next;n.type!==h.EOF&&t.closed!==n;){if(n.type===h.ATTRIBUTE&&"type"===n.text){n.next&&n.next.type===h.EQUALS&&n.next.next&&n.next.next.type===h.VALUE&&(e=n.next.next.text);break}n=n.next}return e},s=function(t,e){var n=null,i=null;return e.closed?("script"===t?n="text/javascript":"style"===t&&(n="text/css"),-1<(n=_(e)||n).search("text/css")?i="css":-1<n.search(/module|((text|application|dojo)\/(x-)?(javascript|ecmascript|jscript|livescript|(ld\+)?json|method|aspect))/)?i="javascript":-1<n.search(/(text|application|dojo)\/(x-)?(html)/)?i="html":-1<n.search(/test\/null/)&&(i="null"),i):null},l.prototype.get_parser_token=function(){return this._current_frame?this._current_frame.parser_token:null},l.prototype.record_tag=function(t){t=new m(this._current_frame,t,this._printer.indent_level);this._current_frame=t},l.prototype._try_pop_frame=function(t){var e=null;return t&&(e=t.parser_token,this._printer.indent_level=t.indent_level,this._current_frame=t.parent),e},l.prototype._get_frame=function(t,e){for(var n=this._current_frame;n&&-1===t.indexOf(n.tag);){if(e&&-1!==e.indexOf(n.tag)){n=null;break}n=n.parent}return n},l.prototype.try_pop=function(t,e){t=this._get_frame([t],e);return this._try_pop_frame(t)},l.prototype.indent_to_tag=function(t){t=this._get_frame(t);t&&(this._printer.indent_level=t.indent_level)},c.prototype.beautify=function(){var t,e,n,i,_,s,a,u,r;if(this._options.disabled)return this._source_text;for(t=this._source_text,e=this._options.eol,"auto"===this._options.eol&&(e="\n",t&&g.test(t)&&(e=t.match(g)[0])),n=(t=t.replace(b,"\n")).match(/^[\t ]*/)[0],i={text:"",type:""},_=new o,s=new p(this._options,n),a=new f(t,this._options).tokenize(),this._tag_stack=new l(s),u=null,r=a.next();r.type!==h.EOF;)r.type===h.TAG_OPEN||r.type===h.COMMENT?_=u=this._handle_tag_open(s,r,_,i):r.type===h.ATTRIBUTE||r.type===h.EQUALS||r.type===h.VALUE||r.type===h.TEXT&&!_.tag_complete?u=this._handle_inside_tag(s,r,_,a):r.type===h.TAG_CLOSE?u=this._handle_tag_close(s,r,_):r.type===h.TEXT?u=this._handle_text(s,r,_):s.add_raw_token(r),i=u,r=a.next();return s._output.get_code(e)},c.prototype._handle_tag_close=function(t,e,n){var i={text:e.text,type:e.type};return t.alignment_size=0,n.tag_complete=!0,t.set_space_before_token(e.newlines||""!==e.whitespace_before,!0),n.is_unformatted?t.add_raw_token(e):("<"===n.tag_start_char&&(t.set_space_before_token("/"===e.text[0],!0),this._is_wrap_attributes_force_expand_multiline&&n.has_wrapped_attrs&&t.print_newline(!1)),t.print_token(e)),!n.indent_content||n.is_unformatted||n.is_content_unformatted||(t.indent(),n.indent_content=!1),n.is_inline_element||n.is_unformatted||n.is_content_unformatted||t.set_wrap_point(),i},c.prototype._handle_inside_tag=function(t,e,n,i){var _,s,a,u,r=n.has_wrapped_attrs,o={text:e.text,type:e.type};if(t.set_space_before_token(e.newlines||""!==e.whitespace_before,!0),n.is_unformatted)t.add_raw_token(e);else if("{"===n.tag_start_char&&e.type===h.TEXT)t.print_preserved_newlines(e)?(e.newlines=0,t.add_raw_token(e)):t.print_token(e);else{if(e.type===h.ATTRIBUTE?(
-t.set_space_before_token(!0),n.attr_count+=1):(e.type===h.EQUALS||e.type===h.VALUE&&e.previous.type===h.EQUALS)&&t.set_space_before_token(!1),e.type===h.ATTRIBUTE&&"<"===n.tag_start_char&&((this._is_wrap_attributes_preserve||this._is_wrap_attributes_preserve_aligned)&&(t.traverse_whitespace(e),r=r||0!==e.newlines),this._is_wrap_attributes_force)){if(_=1<n.attr_count,this._is_wrap_attributes_force_expand_multiline&&1===n.attr_count){s=!0,a=0;do{if((u=i.peek(a)).type===h.ATTRIBUTE){s=!1;break}}while((a+=1)<4&&u.type!==h.EOF&&u.type!==h.TAG_CLOSE);_=!s}_&&(t.print_newline(!1),r=!0)}t.print_token(e),r=r||t.previous_token_wrapped(),n.has_wrapped_attrs=r}return o},c.prototype._handle_text=function(t,e,n){var i={text:e.text,type:"TK_CONTENT"};return n.custom_beautifier_name?this._print_custom_beatifier_text(t,e,n):n.is_unformatted||n.is_content_unformatted?t.add_raw_token(e):(t.traverse_whitespace(e),t.print_token(e)),i},c.prototype._print_custom_beatifier_text=function(t,e,n){var i,_,s,a,u,r=this;if(""!==e.text){if(i=e.text,u=1,a=s="","javascript"===n.custom_beautifier_name&&"function"==typeof this._js_beautify?_=this._js_beautify:"css"===n.custom_beautifier_name&&"function"==typeof this._css_beautify?_=this._css_beautify:"html"===n.custom_beautifier_name&&(_=function(t,e){return new c(t,e,r._js_beautify,r._css_beautify).beautify()}),"keep"===this._options.indent_scripts?u=0:"separate"===this._options.indent_scripts&&(u=-t.indent_level),u=t.get_full_indent(u),i=i.replace(/\n[ \t]*$/,""),"html"!==n.custom_beautifier_name&&"<"===i[0]&&i.match(/^(<!--|<!\[CDATA\[)/)){if(!(n=/^(<!--[^\n]*|<!\[CDATA\[)(\n?)([ \t\n]*)([\s\S]*)(-->|]]>)$/.exec(i)))return void t.add_raw_token(e);s=u+n[1]+"\n",i=n[4],n[5]&&(a=u+n[5]),i=i.replace(/\n[ \t]*$/,""),(n[2]||-1!==n[3].indexOf("\n"))&&(n=n[3].match(/[ \t]+$/))&&(e.whitespace_before=n[0])}i=i&&(_?((n=function(){this.eol="\n"}).prototype=this._options.raw_options,_(u+i,new n)):u+(i=(n=e.whitespace_before)?i.replace(new RegExp("\n("+n+")?","g"),"\n"):i).replace(/\n/g,"\n"+u)),s&&(i=i?s+i+"\n"+a:s+a),t.print_newline(!1),i&&(e.text=i,e.whitespace_before="",e.newlines=0,t.add_raw_token(e),t.print_newline(!0))}},c.prototype._handle_tag_open=function(t,e,n,i){var _=this._get_tag_open_token(e);return!n.is_unformatted&&!n.is_content_unformatted||n.is_empty_element||e.type!==h.TAG_OPEN||0!==e.text.indexOf("</")?(t.traverse_whitespace(e),this._set_tag_position(t,e,_,n,i),_.is_inline_element||t.set_wrap_point(),t.print_token(e)):(t.add_raw_token(e),_.start_tag_token=this._tag_stack.try_pop(_.tag_name)),(this._is_wrap_attributes_force_aligned||this._is_wrap_attributes_aligned_multiple||this._is_wrap_attributes_preserve_aligned)&&(_.alignment_size=e.text.length+1),_.tag_complete||_.is_unformatted||(t.alignment_size=_.alignment_size),_},o=function(t,e){var n;this.parent=t||null,this.text="",this.type="TK_TAG_OPEN",this.tag_name="",this.is_inline_element=!1,this.is_unformatted=!1,this.is_content_unformatted=!1,this.is_empty_element=!1,this.is_start_tag=!1,this.is_end_tag=!1,this.indent_content=!1,this.multiline_content=!1,this.custom_beautifier_name=null,this.start_tag_token=null,this.attr_count=0,this.has_wrapped_attrs=!1,this.alignment_size=0,this.tag_complete=!1,this.tag_start_char="",this.tag_check="",e?(this.tag_start_char=e.text[0],this.text=e.text,"<"===this.tag_start_char?(n=e.text.match(/^<([^\s>]*)/),this.tag_check=n?n[1]:""):(n=e.text.match(/^{{~?(?:[\^]|#\*?)?([^\s}]+)/),this.tag_check=n?n[1]:"",(e.text.startsWith("{{#>")||e.text.startsWith("{{~#>"))&&">"===this.tag_check[0]&&(">"===this.tag_check&&null!==e.next?this.tag_check=e.next.text.split(" ")[0]:this.tag_check=e.text.split(">")[1])),this.tag_check=this.tag_check.toLowerCase(),e.type===h.COMMENT&&(this.tag_complete=!0),this.is_start_tag="/"!==this.tag_check.charAt(0),this.tag_name=this.is_start_tag?this.tag_check:this.tag_check.substr(1),this.is_end_tag=!this.is_start_tag||e.closed&&"/>"===e.closed.text,t=2,"{"===this.tag_start_char&&3<=this.text.length&&"~"===this.text.charAt(2)&&(t=3),this.is_end_tag=this.is_end_tag||"{"===this.tag_start_char&&(this.text.length<3||/[^#\^]/.test(this.text.charAt(t)))):this.tag_complete=!0},c.prototype._get_tag_open_token=function(t){t=new o(this._tag_stack.get_parser_token(),t);return t.alignment_size=this._options.wrap_attributes_indent_size,t.is_end_tag=t.is_end_tag||a(t.tag_check,this._options.void_elements),t.is_empty_element=t.tag_complete||t.is_start_tag&&t.is_end_tag,t.is_unformatted=!t.tag_complete&&a(t.tag_check,this._options.unformatted),t.is_content_unformatted=!t.is_empty_element&&a(t.tag_check,this._options.content_unformatted),t.is_inline_element=a(t.tag_name,this._options.inline)||t.tag_name.includes("-")||"{"===t.tag_start_char,t},c.prototype._set_tag_position=function(t,e,n,i,_){n.is_empty_element||(n.is_end_tag?n.start_tag_token=this._tag_stack.try_pop(n.tag_name):(this._do_optional_end_element(n)&&(n.is_inline_element||t.print_newline(!1)),this._tag_stack.record_tag(n),"script"!==n.tag_name&&"style"!==n.tag_name||n.is_unformatted||n.is_content_unformatted||(n.custom_beautifier_name=s(n.tag_check,e)))),a(n.tag_check,this._options.extra_liners)&&(t.print_newline(!1),t._output.just_added_blankline()||t.print_newline(!0)),n.is_empty_element?("{"===n.tag_start_char&&"else"===n.tag_check&&(this._tag_stack.indent_to_tag(["if","unless","each"]),n.indent_content=!0,t.current_line_has_match(/{{#if/)||t.print_newline(!1)),"!--"===n.tag_name&&_.type===h.TAG_CLOSE&&i.is_end_tag&&-1===n.text.indexOf("\n")||(n.is_inline_element||n.is_unformatted||t.print_newline(!1),this._calcluate_parent_multiline(t,n))):n.is_end_tag?(e=!1,e=(e=n.start_tag_token&&n.start_tag_token.multiline_content)||!n.is_inline_element&&!(i.is_inline_element||i.is_unformatted)&&!(_.type===h.TAG_CLOSE&&n.start_tag_token===i)&&"TK_CONTENT"!==_.type,(e=n.is_content_unformatted||n.is_unformatted?!1:e)&&t.print_newline(!1)):(n.indent_content=!n.custom_beautifier_name,"<"===n.tag_start_char&&(
-"html"===n.tag_name?n.indent_content=this._options.indent_inner_html:"head"===n.tag_name?n.indent_content=this._options.indent_head_inner_html:"body"===n.tag_name&&(n.indent_content=this._options.indent_body_inner_html)),n.is_inline_element||n.is_unformatted||"TK_CONTENT"===_.type&&!n.is_content_unformatted||t.print_newline(!1),this._calcluate_parent_multiline(t,n))},c.prototype._calcluate_parent_multiline=function(t,e){!e.parent||!t._output.just_added_newline()||(e.is_inline_element||e.is_unformatted)&&e.parent.is_inline_element||(e.parent.multiline_content=!0)},i=["address","article","aside","blockquote","details","div","dl","fieldset","figcaption","figure","footer","form","h1","h2","h3","h4","h5","h6","header","hr","main","nav","ol","p","pre","section","table","ul"],u=["a","audio","del","ins","map","noscript","video"],c.prototype._do_optional_end_element=function(t){var e,n=null;if(!t.is_empty_element&&t.is_start_tag&&t.parent)return"body"===t.tag_name?n=n||this._tag_stack.try_pop("head"):"li"===t.tag_name?n=n||this._tag_stack.try_pop("li",["ol","ul"]):"dd"===t.tag_name||"dt"===t.tag_name?n=(n=n||this._tag_stack.try_pop("dt",["dl"]))||this._tag_stack.try_pop("dd",["dl"]):"p"===t.parent.tag_name&&-1!==i.indexOf(t.tag_name)?(e=t.parent.parent)&&-1!==u.indexOf(e.tag_name)||(n=n||this._tag_stack.try_pop("p")):"rp"===t.tag_name||"rt"===t.tag_name?n=(n=n||this._tag_stack.try_pop("rt",["ruby","rtc"]))||this._tag_stack.try_pop("rp",["ruby","rtc"]):"optgroup"===t.tag_name?n=n||this._tag_stack.try_pop("optgroup",["select"]):"option"===t.tag_name?n=n||this._tag_stack.try_pop("option",["select","datalist","optgroup"]):"colgroup"===t.tag_name?n=n||this._tag_stack.try_pop("caption",["table"]):"thead"===t.tag_name?n=(n=n||this._tag_stack.try_pop("caption",["table"]))||this._tag_stack.try_pop("colgroup",["table"]):"tbody"===t.tag_name||"tfoot"===t.tag_name?n=(n=(n=(n=n||this._tag_stack.try_pop("caption",["table"]))||this._tag_stack.try_pop("colgroup",["table"]))||this._tag_stack.try_pop("thead",["table"]))||this._tag_stack.try_pop("tbody",["table"]):"tr"===t.tag_name?n=(n=(n=n||this._tag_stack.try_pop("caption",["table"]))||this._tag_stack.try_pop("colgroup",["table"]))||this._tag_stack.try_pop("tr",["table","thead","tbody","tfoot"]):"th"!==t.tag_name&&"td"!==t.tag_name||(n=(n=n||this._tag_stack.try_pop("td",["table","thead","tbody","tfoot","tr"]))||this._tag_stack.try_pop("th",["table","thead","tbody","tfoot","tr"])),t.parent=this._tag_stack.get_parser_token(),n},e.exports.Beautifier=c},function(t,e,n){var i=n(6).Options;function _(t){i.call(this,t,"html"),1===this.templating.length&&"auto"===this.templating[0]&&(this.templating=["django","erb","handlebars","php"]),this.indent_inner_html=this._get_boolean("indent_inner_html"),this.indent_body_inner_html=this._get_boolean("indent_body_inner_html",!0),this.indent_head_inner_html=this._get_boolean("indent_head_inner_html",!0),this.indent_handlebars=this._get_boolean("indent_handlebars",!0),this.wrap_attributes=this._get_selection("wrap_attributes",["auto","force","force-aligned","force-expand-multiline","aligned-multiple","preserve","preserve-aligned"]),this.wrap_attributes_indent_size=this._get_number("wrap_attributes_indent_size",this.indent_size),this.extra_liners=this._get_array("extra_liners",["head","body","/html"]),this.inline=this._get_array("inline",["a","abbr","area","audio","b","bdi","bdo","br","button","canvas","cite","code","data","datalist","del","dfn","em","embed","i","iframe","img","input","ins","kbd","keygen","label","map","mark","math","meter","noscript","object","output","progress","q","ruby","s","samp","select","small","span","strong","sub","sup","svg","template","textarea","time","u","var","video","wbr","text","acronym","big","strike","tt"]),this.void_elements=this._get_array("void_elements",["area","base","br","col","embed","hr","img","input","keygen","link","menuitem","meta","param","source","track","wbr","!doctype","?xml","basefont","isindex"]),this.unformatted=this._get_array("unformatted",[]),this.content_unformatted=this._get_array("content_unformatted",["pre","textarea"]),this.unformatted_content_delimiter=this._get_characters("unformatted_content_delimiter"),this.indent_scripts=this._get_selection("indent_scripts",["normal","keep","separate"])}_.prototype=new i,t.exports.Options=_},function(t,o,e){var n=e(9).Tokenizer,i=e(9).TOKEN,_=e(13).Directives,s=e(14).TemplatablePattern,a=e(12).Pattern,u={TAG_OPEN:"TK_TAG_OPEN",TAG_CLOSE:"TK_TAG_CLOSE",ATTRIBUTE:"TK_ATTRIBUTE",EQUALS:"TK_EQUALS",VALUE:"TK_VALUE",COMMENT:"TK_COMMENT",TEXT:"TK_TEXT",UNKNOWN:"TK_UNKNOWN",START:i.START,RAW:i.RAW,EOF:i.EOF},r=new _(/<\!--/,/-->/),e=function(t,e){n.call(this,t,e),this._current_tag_name="",t=new s(this._input).read_options(this._options),e=new a(this._input),this.__patterns={word:t.until(/[\n\r\t <]/),single_quote:t.until_after(/'/),double_quote:t.until_after(/"/),attribute:t.until(/[\n\r\t =>]|\/>/),element_name:t.until(/[\n\r\t >\/]/),handlebars_comment:e.starting_with(/{{!--/).until_after(/--}}/),handlebars:e.starting_with(/{{/).until_after(/}}/),handlebars_open:e.until(/[\n\r\t }]/),handlebars_raw_close:e.until(/}}/),comment:e.starting_with(/<!--/).until_after(/-->/),cdata:e.starting_with(/<!\[CDATA\[/).until_after(/]]>/),conditional_comment:e.starting_with(/<!\[/).until_after(/]>/),processing:e.starting_with(/<\?/).until_after(/\?>/)},this._options.indent_handlebars&&(this.__patterns.word=this.__patterns.word.exclude("handlebars")),this._unformatted_content_delimiter=null,this._options.unformatted_content_delimiter&&(t=this._input.get_literal_regexp(this._options.unformatted_content_delimiter),this.__patterns.unformatted_content_delimiter=e.matching(t).until_after(t))};(e.prototype=new n)._is_comment=function(t){return!1},e.prototype._is_opening=function(t){return t.type===u.TAG_OPEN},e.prototype._is_closing=function(t,e){return t.type===u.TAG_CLOSE&&e&&((">"===t.text||"/>"===t.text
-)&&"<"===e.text[0]||"}}"===t.text&&"{"===e.text[0]&&"{"===e.text[1])},e.prototype._reset=function(){this._current_tag_name=""},e.prototype._get_next_token=function(t,e){var n;return this._readWhitespace(),null===(n=this._input.peek())?this._create_token(u.EOF,""):this._read_open_handlebars(n,e)||this._read_attribute(n,t,e)||this._read_close(n,e)||this._read_raw_content(n,t,e)||this._read_content_word(n)||this._read_comment_or_cdata(n)||this._read_processing(n)||this._read_open(n,e)||this._create_token(u.UNKNOWN,this._input.next())},e.prototype._read_comment_or_cdata=function(t){var e=null,n=null,i=null;return"<"===t&&("!"===this._input.peek(1)&&((n=this.__patterns.comment.read())?(i=r.get_directives(n))&&"start"===i.ignore&&(n+=r.readIgnored(this._input)):n=this.__patterns.cdata.read()),n&&((e=this._create_token(u.COMMENT,n)).directives=i)),e},e.prototype._read_processing=function(t){var e=null,n=null;return"<"===t&&(n="!"!==(t=this._input.peek(1))&&"?"!==t?n:(n=this.__patterns.conditional_comment.read())||this.__patterns.processing.read())&&((e=this._create_token(u.COMMENT,n)).directives=null),e},e.prototype._read_open=function(t,e){var n=null,i=null;return e||"<"===t&&(n=this._input.next(),"/"===this._input.peek()&&(n+=this._input.next()),n+=this.__patterns.element_name.read(),i=this._create_token(u.TAG_OPEN,n)),i},e.prototype._read_open_handlebars=function(t,e){var n=null,i=null;return e||this._options.indent_handlebars&&"{"===t&&"{"===this._input.peek(1)&&(i="!"===this._input.peek(2)?(n=(n=this.__patterns.handlebars_comment.read())||this.__patterns.handlebars.read(),this._create_token(u.COMMENT,n)):(n=this.__patterns.handlebars_open.read(),this._create_token(u.TAG_OPEN,n))),i},e.prototype._read_close=function(t,e){var n=null,i=null;return e&&("<"===e.text[0]&&(">"===t||"/"===t&&">"===this._input.peek(1))?(n=this._input.next(),"/"===t&&(n+=this._input.next()),i=this._create_token(u.TAG_CLOSE,n)):"{"===e.text[0]&&"}"===t&&"}"===this._input.peek(1)&&(this._input.next(),this._input.next(),i=this._create_token(u.TAG_CLOSE,"}}"))),i},e.prototype._read_attribute=function(t,e,n){var i=null;return n&&"<"===n.text[0]&&("="===t?i=this._create_token(u.EQUALS,this._input.next()):'"'===t||"'"===t?(n=this._input.next(),n+=('"'===t?this.__patterns.double_quote:this.__patterns.single_quote).read(),i=this._create_token(u.VALUE,n)):(t=this.__patterns.attribute.read())&&(i=e.type===u.EQUALS?this._create_token(u.VALUE,t):this._create_token(u.ATTRIBUTE,t))),i},e.prototype._is_content_unformatted=function(t){return-1===this._options.void_elements.indexOf(t)&&(-1!==this._options.content_unformatted.indexOf(t)||-1!==this._options.unformatted.indexOf(t))},e.prototype._read_raw_content=function(t,e,n){var i="";if(n&&"{"===n.text[0])i=this.__patterns.handlebars_raw_close.read();else if(e.type===u.TAG_CLOSE&&"<"===e.opened.text[0]&&"/"!==e.text[0])if("script"===(n=e.opened.text.substr(1).toLowerCase())||"style"===n){if(e=this._read_comment_or_cdata(t))return e.type=u.TEXT,e;i=this._input.readUntil(new RegExp("</"+n+"[\\n\\r\\t ]*?>","ig"))}else this._is_content_unformatted(n)&&(i=this._input.readUntil(new RegExp("</"+n+"[\\n\\r\\t ]*?>","ig")));return i?this._create_token(u.TEXT,i):null},e.prototype._read_content_word=function(t){var e="";if(e=(e=this._options.unformatted_content_delimiter&&t===this._options.unformatted_content_delimiter[0]?this.__patterns.unformatted_content_delimiter.read():e)||this.__patterns.word.read())return this._create_token(u.TEXT,e)},t.exports.Tokenizer=e,t.exports.TOKEN=u}],i={};t=function _(t){var e=i[t];return e!==undefined||(e=i[t]={exports:{}},n[t](e,e.exports,_)),e.exports}(18),u=t}(),n=u,void 0!==r?(_=i=r).html_beautify=function(t,e){return n(t,e,i.js_beautify,_.css_beautify)}:"undefined"!=typeof window?window.html_beautify=function(t,e){return n(t,e,window.js_beautify,window.css_beautify)}:"undefined"!=typeof global&&(global.html_beautify=function(t,e){return n(t,e,global.js_beautify,global.css_beautify)})},"@VERSION@");
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t?null!==t&&"function"==typeof t.concat&&(e=t.concat()):"string"==typeof t&&(e=t.split(/[^a-zA-Z0-9_\/\-]+/)),e},e.prototype._get_boolean=function(t,e){t=this.raw_options[t],e=t===undefined?!!e:!!t;return e},e.prototype._get_characters=function(t,e){t=this.raw_options[t],e=e||"";return e="string"==typeof t?t.replace(/\\r/,"\r").replace(/\\n/,"\n").replace(/\\t/,"\t"):e},e.prototype._get_number=function(t,e){var t=this.raw_options[t];return e=parseInt(e,10),isNaN(e)&&(e=0),t=parseInt(t,10),t=isNaN(t)?e:t},e.prototype._get_selection=function(t,e,n){n=this._get_selection_list(t,e,n);if(1!==n.length)throw new Error("Invalid Option Value: The option '"+t+"' can only be one of the following values:\n"+e+"\nYou passed in: '"+this.raw_options[t]+"'");return n[0]},e.prototype._get_selection_list=function(t,e,n){if(!e||0===e.length)throw new Error("Selection list cannot be empty.");if(n=n||[e[0]],!this._is_valid_selection(n,e))throw new Error("Invalid Default Value!");n=this._get_array(t,n);if(!this._is_valid_selection(n,e))throw new Error("Invalid Option Value: The option '"+t+"' can contain only the following values:\n"+e+"\nYou passed in: '"+this.raw_options[t]+"'");return n},e.prototype._is_valid_selection=function(t,e){return t.length&&e.length&&!t.some(function(t){return-1===e.indexOf(t)})},t.exports.Options=e,t.exports.normalizeOpts=_,t.exports.mergeOpts=n},function(t,u,e){var o,i,n,p,l,c,d,_,f=e(8).InputScanner,g=e(9).Tokenizer,s=e(9).TOKEN,a=e(13).Directives,h=e(4),b=e(12).Pattern,m=e(14).TemplatablePattern;function r(t,e){return-1!==e.indexOf(t)}o={START_EXPR:"TK_START_EXPR",END_EXPR:"TK_END_EXPR",START_BLOCK:"TK_START_BLOCK",END_BLOCK:"TK_END_BLOCK",WORD:"TK_WORD",RESERVED:"TK_RESERVED",SEMICOLON:"TK_SEMICOLON",STRING:"TK_STRING",EQUALS:"TK_EQUALS",OPERATOR:"TK_OPERATOR",COMMA:"TK_COMMA",BLOCK_COMMENT:"TK_BLOCK_COMMENT",COMMENT:"TK_COMMENT",DOT:"TK_DOT",UNKNOWN:"TK_UNKNOWN",START:s.START,RAW:s.RAW,EOF:s.EOF},i=new a(/\/\*/,/\*\//),n=/0[xX][0123456789abcdefABCDEF_]*n?|0[oO][01234567_]*n?|0[bB][01_]*n?|\d[\d_]*n|(?:\.\d[\d_]*|\d[\d_]*\.?[\d_]*)(?:[eE][+-]?[\d_]+)?/,p=/[0-9]/,l=/[^\d\.]/,e=">>> === !== &&= ??= ||= << && >= ** != == <= >> || ?? |> < / - + > : & % ? ^ | *".split(" "),s=(s="\\?\\.(?!\\d) "+(s=(s=">>>= ... >>= <<= === >>> !== **= &&= ??= ||= => ^= :: /= << <= == && -= >= >> != -- += ** || ?? ++ %= &= *= |= |> = ! ? > < : / ^ - + * & % ~ |").replace(/[-[\]{}()*+?.,\\^$|#]/g,"\\$&"))).replace(/ /g,"|"),c=new RegExp(s),s=(a="continue,try,throw,return,var,let,const,if,switch,case,default,for,while,break,function,import,export".split(",")).concat(["do","in","of","else","get","set","new","catch","finally","typeof","yield","async","await","from","as","class","extends"]),d=new RegExp("^(?:"+s.join("|")+")$"),((s=function(t,e){g.call(
+this,t,e),this._patterns.whitespace=this._patterns.whitespace.matching(/\u00A0\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff/.source,/\u2028\u2029/.source),t=new b(this._input),e=new m(this._input).read_options(this._options),this.__patterns={template:e,identifier:e.starting_with(h.identifier).matching(h.identifierMatch),number:t.matching(n),punct:t.matching(c),comment:t.starting_with(/\/\//).until(/[\n\r\u2028\u2029]/),block_comment:t.starting_with(/\/\*/).until_after(/\*\//),html_comment_start:t.matching(/<!--/),html_comment_end:t.matching(/-->/),include:t.starting_with(/#include/).until_after(h.lineBreak),shebang:t.starting_with(/#!/).until_after(h.lineBreak),xml:t.matching(/[\s\S]*?<(\/?)([-a-zA-Z:0-9_.]+|{[^}]+?}|!\[CDATA\[[^\]]*?\]\]|)(\s*{[^}]+?}|\s+[-a-zA-Z:0-9_.]+|\s+[-a-zA-Z:0-9_.]+\s*=\s*('[^']*'|"[^"]*"|{([^{}]|{[^}]+?})+?}))*\s*(\/?)\s*>/),single_quote:e.until(/['\\\n\r\u2028\u2029]/),double_quote:e.until(/["\\\n\r\u2028\u2029]/),template_text:e.until(/[`\\$]/),template_expression:e.until(/[`}\\]/)}}).prototype=new g)._is_comment=function(t){return t.type===o.COMMENT||t.type===o.BLOCK_COMMENT||t.type===o.UNKNOWN},s.prototype._is_opening=function(t){return t.type===o.START_BLOCK||t.type===o.START_EXPR},s.prototype._is_closing=function(t,e){return(t.type===o.END_BLOCK||t.type===o.END_EXPR)&&e&&("]"===t.text&&"["===e.text||")"===t.text&&"("===e.text||"}"===t.text&&"{"===e.text)},s.prototype._reset=function(){_=!1},s.prototype._get_next_token=function(t,e){var n;return this._readWhitespace(),null===(n=this._input.peek())?this._create_token(o.EOF,""):this._read_non_javascript(n)||this._read_string(n)||this._read_pair(n,this._input.peek(1))||this._read_word(t)||this._read_singles(n)||this._read_comment(n)||this._read_regexp(n,t)||this._read_xml(n,t)||this._read_punctuation()||this._create_token(o.UNKNOWN,this._input.next())},s.prototype._read_word=function(t){var e=this.__patterns.identifier.read();return""!==e?(e=e.replace(h.allLineBreaks,"\n"),t.type!==o.DOT&&(t.type!==o.RESERVED||"set"!==t.text&&"get"!==t.text)&&d.test(e)?"in"!==e&&"of"!==e||t.type!==o.WORD&&t.type!==o.STRING?this._create_token(o.RESERVED,e):this._create_token(o.OPERATOR,e):this._create_token(o.WORD,e)):""!==(e=this.__patterns.number.read())?this._create_token(o.WORD,e):void 0},s.prototype._read_singles=function(t){var e=null;return"("===t||"["===t?e=this._create_token(o.START_EXPR,t):")"===t||"]"===t?e=this._create_token(o.END_EXPR,t):"{"===t?e=this._create_token(o.START_BLOCK,t):"}"===t?e=this._create_token(o.END_BLOCK,t):";"===t?e=this._create_token(o.SEMICOLON,t):"."===t&&l.test(this._input.peek(1))?e=this._create_token(o.DOT,t):","===t&&(e=this._create_token(o.COMMA,t)),e&&this._input.next(),e},s.prototype._read_pair=function(t,e){var n=null;return(n="#"===t&&"{"===e?this._create_token(o.START_BLOCK,t+e):n)&&(this._input.next(),this._input.next()),n},s.prototype._read_punctuation=function(){var t=this.__patterns.punct.read();if(""!==t)return"="===t?this._create_token(o.EQUALS,t):"?."===t?this._create_token(o.DOT,t):this._create_token(o.OPERATOR,t)},s.prototype._read_non_javascript=function(t){var e,n="";if("#"===t){if(this._is_first_token()&&(n=this.__patterns.shebang.read()))return this._create_token(o.UNKNOWN,n.trim()+"\n");if(n=this.__patterns.include.read())return this._create_token(o.UNKNOWN,n.trim()+"\n");if(t=this._input.next(),e="#",this._input.hasNext()&&this._input.testChar(p)){for(;e+=t=this._input.next(),this._input.hasNext()&&"#"!==t&&"="!==t;);return"#"===t||("["===this._input.peek()&&"]"===this._input.peek(1)?(e+="[]",this._input.next(),this._input.next()):"{"===this._input.peek()&&"}"===this._input.peek(1)&&(e+="{}",this._input.next(),this._input.next())),this._create_token(o.WORD,e)}this._input.back()}else if("<"===t&&this._is_first_token()){if(n=this.__patterns.html_comment_start.read()){for(;this._input.hasNext()&&!this._input.testChar(h.newline);)n+=this._input.next();return _=!0,this._create_token(o.COMMENT,n)}}else if(_&&"-"===t&&(n=this.__patterns.html_comment_end.read()))return _=!1,this._create_token(o.COMMENT,n);return null},s.prototype._read_comment=function(t){var e,n=null;return"/"===t&&(t="","*"===this._input.peek(1)?(t=this.__patterns.block_comment.read(),(e=i.get_directives(t))&&"start"===e.ignore&&(t+=i.readIgnored(this._input)),t=t.replace(h.allLineBreaks,"\n"),(n=this._create_token(o.BLOCK_COMMENT,t)).directives=e):"/"===this._input.peek(1)&&(t=this.__patterns.comment.read(),n=this._create_token(o.COMMENT,t))),n},s.prototype._read_string=function(t){var e;return"`"===t||"'"===t||'"'===t?(e=this._input.next(),this.has_char_escapes=!1,e+="`"===t?this._read_string_recursive("`",!0,"${"):this._read_string_recursive(t),this.has_char_escapes&&this._options.unescape_strings&&(e=function(t){var e="",n=0,i=new f(t),_=null;for(;i.hasNext();)if((_=i.match(/([\s]|[^\\]|\\\\)+/g))&&(e+=_[0]),"\\"===i.peek()){if(i.next(),"x"===i.peek())_=i.match(/x([0-9A-Fa-f]{2})/g);else{if("u"!==i.peek()){e+="\\",i.hasNext()&&(e+=i.next());continue}_=(_=i.match(/u([0-9A-Fa-f]{4})/g))||i.match(/u\{([0-9A-Fa-f]+)\}/g)}if(!_)return t;if(126<(n=parseInt(_[1],16))&&n<=255&&0===_[0].indexOf("x"))return t;e+=0<=n&&n<32||1114111<n?"\\"+_[0]:34===n||39===n||92===n?"\\"+String.fromCharCode(n):String.fromCharCode(n)}return e}(e)),this._input.peek()===t&&(e+=this._input.next()),e=e.replace(h.allLineBreaks,"\n"),this._create_token(o.STRING,e)):null},s.prototype._allow_regexp_or_xml=function(t){return t.type===o.RESERVED&&r(t.text,["return","case","throw","else","do","typeof","yield"])||t.type===o.END_EXPR&&")"===t.text&&t.opened.previous.type===o.RESERVED&&r(t.opened.previous.text,["if","while","for"])||r(t.type,[o.COMMENT,o.START_EXPR,o.START_BLOCK,o.START,o.END_BLOCK,o.OPERATOR,o.EQUALS,o.EOF,o.SEMICOLON,o.COMMA])},s.prototype._read_regexp=function(t,e){var n,i,_;if("/"===t&&this._allow_regexp_or_xml(e)){for(n=this._input.next(),_=i=!1;this._input.hasNext()&&(i||_||this._input.peek()!==t
+)&&!this._input.testChar(h.newline);)n+=this._input.peek(),i?i=!1:(i="\\"===this._input.peek(),"["===this._input.peek()?_=!0:"]"===this._input.peek()&&(_=!1)),this._input.next();return this._input.peek()===t&&(n=(n+=this._input.next())+this._input.read(h.identifier)),this._create_token(o.STRING,n)}return null},s.prototype._read_xml=function(t,e){var n,i,_,s,a,r,u;if(this._options.e4x&&"<"===t&&this._allow_regexp_or_xml(e)&&(n="",i=this.__patterns.xml.read_match())){for(s=0===(_=i[2].replace(/^{\s+/,"{").replace(/\s+}$/,"}")).indexOf("{"),a=0;i&&(r=!!i[1],u=i[2],!(!!i[i.length-1]||"![CDATA["===u.slice(0,8))&&(u===_||s&&u.replace(/^{\s+/,"{").replace(/\s+}$/,"}"))&&(r?--a:++a),n+=i[0],!(a<=0));)i=this.__patterns.xml.read_match();return i||(n+=this._input.match(/[\s\S]*/g)[0]),n=n.replace(h.allLineBreaks,"\n"),this._create_token(o.STRING,n)}return null},s.prototype._read_string_recursive=function(t,e,n){var i,_,s,a;for("'"===t?_=this.__patterns.single_quote:'"'===t?_=this.__patterns.double_quote:"`"===t?_=this.__patterns.template_text:"}"===t&&(_=this.__patterns.template_expression),s=_.read(),a="";this._input.hasNext();){if((a=this._input.next())===t||!e&&h.newline.test(a)){this._input.back();break}"\\"===a&&this._input.hasNext()?("x"===(i=this._input.peek())||"u"===i?this.has_char_escapes=!0:"\r"===i&&"\n"===this._input.peek(1)&&this._input.next(),a+=this._input.next()):n&&("${"===n&&"$"===a&&"{"===this._input.peek()&&(a+=this._input.next()),n===a&&(a+="`"===t?this._read_string_recursive("}",e,"`"):this._read_string_recursive("`",e,"${"),this._input.hasNext()&&(a+=this._input.next()))),s+=a+=_.read()}return s},t.exports.Tokenizer=s,t.exports.TOKEN=o,t.exports.positionable_operators=e.slice(),t.exports.line_starters=a.slice()},function(t){var i=RegExp.prototype.hasOwnProperty("sticky");function e(t){this.__input=t||"",this.__input_length=this.__input.length,this.__position=0}e.prototype.restart=function(){this.__position=0},e.prototype.back=function(){0<this.__position&&--this.__position},e.prototype.hasNext=function(){return this.__position<this.__input_length},e.prototype.next=function(){var t=null;return this.hasNext()&&(t=this.__input.charAt(this.__position),this.__position+=1),t},e.prototype.peek=function(t){var e=null;return t=t||0,e=0<=(t+=this.__position)&&t<this.__input_length?this.__input.charAt(t):e},e.prototype.__match=function(t,e){t.lastIndex=e;var n=t.exec(this.__input);return!n||i&&t.sticky||n.index!==e&&(n=null),n},e.prototype.test=function(t,e){return e=e||0,0<=(e+=this.__position)&&e<this.__input_length&&!!this.__match(t,e)},e.prototype.testChar=function(t,e){e=this.peek(e);return t.lastIndex=0,null!==e&&t.test(e)},e.prototype.match=function(t){t=this.__match(t,this.__position);return t?this.__position+=t[0].length:t=null,t},e.prototype.read=function(t,e,n){var i,_="";return t&&(i=this.match(t))&&(_+=i[0]),!e||!i&&t||(_+=this.readUntil(e,n)),_},e.prototype.readUntil=function(t,e){var n=this.__position;return t.lastIndex=this.__position,(t=t.exec(this.__input))?(n=t.index,e&&(n+=t[0].length)):n=this.__input_length,e=this.__input.substring(this.__position,n),this.__position=n,e},e.prototype.readUntilAfter=function(t){return this.readUntil(t,!0)},e.prototype.get_regexp=function(t,e){var n=null,e=e&&i?"y":"g";return"string"==typeof t&&""!==t?n=new RegExp(t,e):t&&(n=new RegExp(t.source,e)),n},e.prototype.get_literal_regexp=function(t){return RegExp(t.replace(/[-\/\\^$*+?.()|[\]{}]/g,"\\$&"))},e.prototype.peekUntilAfter=function(t){var e=this.__position,t=this.readUntilAfter(t);return this.__position=e,t},e.prototype.lookBack=function(t){var e=this.__position-1;return e>=t.length&&this.__input.substring(e-t.length,e).toLowerCase()===t},t.exports.InputScanner=e},function(t,e,n){var i=n(8).InputScanner,s=n(3).Token,a=n(10).TokenStream,_=n(11).WhitespacePattern,r={START:"TK_START",RAW:"TK_RAW",EOF:"TK_EOF"},n=function(t,e){this._input=new i(t),this._options=e||{},this.__tokens=null,this._patterns={},this._patterns.whitespace=new _(this._input)};n.prototype.tokenize=function(){var t,e,n,i,_;for(this._input.restart(),this.__tokens=new a,this._reset(),e=new s(r.START,""),n=null,i=[],_=new a;e.type!==r.EOF;){for(t=this._get_next_token(e,n);this._is_comment(t);)_.add(t),t=this._get_next_token(e,n);_.isEmpty()||(t.comments_before=_,_=new a),t.parent=n,this._is_opening(t)?(i.push(n),n=t):n&&this._is_closing(t,n)&&((t.opened=n).closed=t,n=i.pop(),t.parent=n),(t.previous=e).next=t,this.__tokens.add(t),e=t}return this.__tokens},n.prototype._is_first_token=function(){return this.__tokens.isEmpty()},n.prototype._reset=function(){},n.prototype._get_next_token=function(t,e){this._readWhitespace();var n=this._input.read(/.+/g);return n?this._create_token(r.RAW,n):this._create_token(r.EOF,"")},n.prototype._is_comment=function(t){return!1},n.prototype._is_opening=function(t){return!1},n.prototype._is_closing=function(t,e){return!1},n.prototype._create_token=function(t,e){return new s(t,e,this._patterns.whitespace.newline_count,this._patterns.whitespace.whitespace_before_token)},n.prototype._readWhitespace=function(){return this._patterns.whitespace.read()},t.exports.Tokenizer=n,t.exports.TOKEN=r},function(t){function e(t){this.__tokens=[],this.__tokens_length=this.__tokens.length,this.__position=0,this.__parent_token=t}e.prototype.restart=function(){this.__position=0},e.prototype.isEmpty=function(){return 0===this.__tokens_length},e.prototype.hasNext=function(){return this.__position<this.__tokens_length},e.prototype.next=function(){var t=null;return this.hasNext()&&(t=this.__tokens[this.__position],this.__position+=1),t},e.prototype.peek=function(t){var e=null;return t=t||0,e=0<=(t+=this.__position)&&t<this.__tokens_length?this.__tokens[t]:e},e.prototype.add=function(t){this.__parent_token&&(t.parent=this.__parent_token),this.__tokens.push(t),this.__tokens_length+=1},t.exports.TokenStream=e},function(t,e,n){var i=n(12).Pattern;function _(t,e){i.call(this,t,e),
+e?this._line_regexp=this._input.get_regexp(e._line_regexp):this.__set_whitespace_patterns("",""),this.newline_count=0,this.whitespace_before_token=""}(_.prototype=new i).__set_whitespace_patterns=function(t,e){this._match_pattern=this._input.get_regexp("["+(t+="\\t ")+(e+="\\n\\r")+"]+",!0),this._newline_regexp=this._input.get_regexp("\\r\\n|["+e+"]")},_.prototype.read=function(){var t,e;return this.newline_count=0,this.whitespace_before_token=""," "===(t=this._input.read(this._match_pattern))?this.whitespace_before_token=" ":t&&(e=this.__split(this._newline_regexp,t),this.newline_count=e.length-1,this.whitespace_before_token=e[this.newline_count]),t},_.prototype.matching=function(t,e){var n=this._create();return n.__set_whitespace_patterns(t,e),n._update(),n},_.prototype._create=function(){return new _(this._input,this)},_.prototype.__split=function(t,e){for(var n=t.lastIndex=0,i=[],_=t.exec(e);_;)i.push(e.substring(n,_.index)),n=_.index+_[0].length,_=t.exec(e);return n<e.length?i.push(e.substring(n,e.length)):i.push(""),i},t.exports.WhitespacePattern=_},function(t){function e(t,e){this._input=t,this._starting_pattern=null,this._match_pattern=null,this._until_pattern=null,this._until_after=!1,e&&(this._starting_pattern=this._input.get_regexp(e._starting_pattern,!0),this._match_pattern=this._input.get_regexp(e._match_pattern,!0),this._until_pattern=this._input.get_regexp(e._until_pattern),this._until_after=e._until_after)}e.prototype.read=function(){var t=this._input.read(this._starting_pattern);return this._starting_pattern&&!t||(t+=this._input.read(this._match_pattern,this._until_pattern,this._until_after)),t},e.prototype.read_match=function(){return this._input.match(this._match_pattern)},e.prototype.until_after=function(t){var e=this._create();return e._until_after=!0,e._until_pattern=this._input.get_regexp(t),e._update(),e},e.prototype.until=function(t){var e=this._create();return e._until_after=!1,e._until_pattern=this._input.get_regexp(t),e._update(),e},e.prototype.starting_with=function(t){var e=this._create();return e._starting_pattern=this._input.get_regexp(t,!0),e._update(),e},e.prototype.matching=function(t){var e=this._create();return e._match_pattern=this._input.get_regexp(t,!0),e._update(),e},e.prototype._create=function(){return new e(this._input,this)},e.prototype._update=function(){},t.exports.Pattern=e},function(t){function e(t,e){t="string"==typeof t?t:t.source,e="string"==typeof e?e:e.source,this.__directives_block_pattern=new RegExp(t+/ beautify( \w+[:]\w+)+ /.source+e,"g"),this.__directive_pattern=/ (\w+)[:](\w+)/g,this.__directives_end_ignore_pattern=new RegExp(t+/\sbeautify\signore:end\s/.source+e,"g")}e.prototype.get_directives=function(t){var e,n;if(!t.match(this.__directives_block_pattern))return null;for(e={},this.__directive_pattern.lastIndex=0,n=this.__directive_pattern.exec(t);n;)e[n[1]]=n[2],n=this.__directive_pattern.exec(t);return e},e.prototype.readIgnored=function(t){return t.readUntilAfter(this.__directives_end_ignore_pattern)},t.exports.Directives=e},function(t,e,n){var i=n(12).Pattern,_={django:!1,erb:!1,handlebars:!1,php:!1,smarty:!1,angular:!1};function s(t,e){i.call(this,t,e),this.__template_pattern=null,this._disabled=Object.assign({},_),this._excluded=Object.assign({},_),e&&(this.__template_pattern=this._input.get_regexp(e.__template_pattern),this._excluded=Object.assign(this._excluded,e._excluded),this._disabled=Object.assign(this._disabled,e._disabled));e=new i(t);this.__patterns={handlebars_comment:e.starting_with(/{{!--/).until_after(/--}}/),handlebars_unescaped:e.starting_with(/{{{/).until_after(/}}}/),handlebars:e.starting_with(/{{/).until_after(/}}/),php:e.starting_with(/<\?(?:[= 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t="",t=this._match_pattern?this._input.read(this._starting_pattern):this._input.read(this._starting_pattern,this.__template_pattern),e=this._read_template();e;)this._match_pattern?e+=this._input.read(this._match_pattern):e+=this._input.readUntil(this.__template_pattern),t+=e,e=this._read_template();return this._until_after&&(t+=this._input.readUntilAfter(this._until_pattern)),t},s.prototype.__set_templated_pattern=function(){var t=[];this._disabled.php||t.push(this.__patterns.php._starting_pattern.source),this._disabled.handlebars||t.push(this.__patterns.handlebars._starting_pattern.source),this._disabled.erb||t.push(this.__patterns.erb._starting_pattern.source),this._disabled.django||(t.push(this.__patterns.django._starting_pattern.source),t.push(this.__patterns.django_value._starting_pattern.source),t.push(this.__patterns.django_comment._starting_pattern.source)),this._disabled.smarty||t.push(this.__patterns.smarty._starting_pattern.source),this._until_pattern&&t.push(this._until_pattern.source),this.__template_pattern=this._input.get_regexp("(?:"+t.join("|")+")")},s.prototype._read_template=function(){var t,e="",n=this._input.peek();return"<"===n?(t=this._input.peek(1),this._disabled.php||this._excluded.php||"?"!==t||(e=e||this.__patterns.php.read()),this._disabled.erb||this._excluded.erb||"%"!==t||(e=e||this.__patterns.erb.read())):"{"===n&&(
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e=this.__items.length-1;0<=e;e--)if(this.__items[e].match(t))return!0;return!1},_.prototype.set_indent=function(t,e){this.is_empty()&&(this.__indent_count=t||0,this.__alignment_count=e||0,this.__character_count=this.__parent.get_indent_size(this.__indent_count,this.__alignment_count))},_.prototype._set_wrap_point=function(){this.__parent.wrap_line_length&&(this.__wrap_point_index=this.__items.length,this.__wrap_point_character_count=this.__character_count,this.__wrap_point_indent_count=this.__parent.next_line.__indent_count,this.__wrap_point_alignment_count=this.__parent.next_line.__alignment_count)},_.prototype._should_wrap=function(){return this.__wrap_point_index&&this.__character_count>this.__parent.wrap_line_length&&this.__wrap_point_character_count>this.__parent.next_line.__character_count},_.prototype._allow_wrap=function(){var t;return!!this._should_wrap()&&(this.__parent.add_new_line(),(t=this.__parent.current_line).set_indent(this.__wrap_point_indent_count,this.__wrap_point_alignment_count),t.__items=this.__items.slice(this.__wrap_point_index),this.__items=this.__items.slice(0,this.__wrap_point_index),t.__character_count+=this.__character_count-this.__wrap_point_character_count,this.__character_count=this.__wrap_point_character_count," "===t.__items[0]&&(t.__items.splice(0,1),--t.__character_count),!0)},_.prototype.is_empty=function(){return 0===this.__items.length},_.prototype.last=function(){return this.is_empty()?null:this.__items[this.__items.length-1]},_.prototype.push=function(t){this.__items.push(t);var e=t.lastIndexOf("\n");-1!==e?this.__character_count=t.length-e:this.__character_count+=t.length},_.prototype.pop=function(){var t=null;return this.is_empty()||(t=this.__items.pop(),this.__character_count-=t.length),t},_.prototype._remove_indent=function(){0<this.__indent_count&&(--this.__indent_count,this.__character_count-=this.__parent.indent_size)},_.prototype._remove_wrap_indent=function(){0<this.__wrap_point_indent_count&&--this.__wrap_point_indent_count},_.prototype.trim=function(){for(;" "===this.last();)this.__items.pop(),--this.__character_count},_.prototype.toString=function(){var t="";return this.is_empty()?this.__parent.indent_empty_lines&&(t=this.__parent.get_indent_string(this.__indent_count)):(t=this.__parent.get_indent_string(this.__indent_count,this.__alignment_count),t+=this.__items.join("")),t},n.prototype.get_indent_size=function(t,e){var n=this.__base_string_length;return n=(n=t<0?0:n)+t*this.__indent_size+(e=e||0)},n.prototype.get_indent_string=function(t,e){var n=this.__base_string;return 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e=0;e<t.newlines;e++)this.__add_outputline();this.current_line.set_indent(-1),this.current_line.push(t.whitespace_before),this.current_line.push(t.text),this.space_before_token=!1,this.non_breaking_space=!1,this.previous_token_wrapped=!1},e.prototype.add_token=function(t){this.__add_space_before_token(),this.current_line.push(t),this.space_before_token=!1,this.non_breaking_space=!1,this.previous_token_wrapped=this.current_line._allow_wrap()},e.prototype.__add_space_before_token=function(){this.space_before_token&&!this.just_added_newline()&&(this.non_breaking_space||this.set_wrap_point(),this.current_line.push(" "))},e.prototype.remove_indent=function(t){for(var e=this.__lines.length;t<e;)this.__lines[t]._remove_indent(),t++;this.current_line._remove_wrap_indent()},e.prototype.trim=function(t){for(t=t!==undefined&&t,this.current_line.trim();t&&1<this.__lines.length&&this.current_line.is_empty();)this.__lines.pop(),this.current_line=this.__lines[this.__lines.length-1],this.current_line.trim();this.previous_line=1<this.__lines.length?this.__lines[this.__lines.length-2]:null},e.prototype.just_added_newline=function(){return this.current_line.is_empty()},e.prototype.just_added_blankline=function(){return this.is_empty()||this.current_line.is_empty()&&this.previous_line.is_empty()},e.prototype.ensure_empty_line_above=function(t,e){for(var n,i=this.__lines.length-2;0<=i&&!(n=this.__lines[i]).is_empty();){if(0!==n.item(0).indexOf(t)&&n.item(-1)!==e){this.__lines.splice(i+1,0,new _(this)),this.previous_line=this.__lines[this.__lines.length-2];break}i--}},t.exports.Output=e},,,,function(t){function e(t,e){this.raw_options=n(t,e),this.disabled=this._get_boolean("disabled"),this.eol=this._get_characters("eol","auto"),this.end_with_newline=this._get_boolean("end_with_newline"),this.indent_size=this._get_number("indent_size",4),this.indent_char=this._get_characters("indent_char"," "),this.indent_level=this._get_number("indent_level"),this.preserve_newlines=this._get_boolean("preserve_newlines",!0),this.max_preserve_newlines=this._get_number("max_preserve_newlines",32786),this.preserve_newlines||(this.max_preserve_newlines=0),this.indent_with_tabs=this._get_boolean("indent_with_tabs","\t"===this.indent_char),this.indent_with_tabs&&(this.indent_char="\t",1===this.indent_size&&(this.indent_size=4)),this.wrap_line_length=this._get_number("wrap_line_length",this._get_number("max_char")),this.indent_empty_lines=this._get_boolean("indent_empty_lines"),this.templating=this._get_selection_list("templating",["auto","none","angular","django","erb","handlebars","php","smarty"],["auto"])}function 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m(t),this._indentLevel=0,this._nestedLevel=0,this._ch=null,e=0,c=this._ch,d=l=s=_=i=n=!1;;){if(a=""!==this._input.read(v),r=c,this._ch=this._input.next(),"\\"===this._ch&&this._input.hasNext()&&(this._ch+=this._input.next()),c=this._ch,!this._ch)break;if("/"===this._ch&&"*"===this._input.peek())this._output.add_new_line(),this._input.back(),o=this._input.read(E),(u=y.get_directives(o))&&"start"===u.ignore&&(o+=y.readIgnored(this._input)),this.print_string(o),this.eatWhitespace(!0),this._output.add_new_line();else if("/"===this._ch&&"/"===this._input.peek())this._output.space_before_token=!0,this._input.back(),this.print_string(this._input.read(O)),this.eatWhitespace(!0);else if("$"===this._ch)this.preserveSingleSpace(a),this.print_string(this._ch),(u=this._input.peekUntilAfter(/[: ,;{}()[\]\/='"]/g)).match(/[ :]$/)&&(u=this.eatString(": ").replace(/\s+$/,""),this.print_string(u),this._output.space_before_token=!0),0===e&&-1!==u.indexOf(":")&&(i=!0,this.indent());else if("@"===this._ch)this.preserveSingleSpace(a),"{"===this._input.peek()?this.print_string(this._ch+this.eatString("}")):(this.print_string(this._ch),(o=this._input.peekUntilAfter(/[: ,;{}()[\]\/='"]/g)).match(/[ :]$/)&&(o=this.eatString(": ").replace(/\s+$/,""),this.print_string(o),this._output.space_before_token=!0),0===e&&-1!==o.indexOf(":")?(i=!0,this.indent()):o in this.NESTED_AT_RULE?(this._nestedLevel+=1,o in this.CONDITIONAL_GROUP_RULE&&(_=!0)):0!==e||i||(s=!0));else if("#"===this._ch&&"{"===this._input.peek())this.preserveSingleSpace(a),this.print_string(this._ch+this.eatString("}"));else if("{"===this._ch)i&&(i=!1,this.outdent()),s=!1,n=_?(_=!1,this._indentLevel>=this._nestedLevel):this._indentLevel>=this._nestedLevel-1,this._options.newline_between_rules&&n&&this._output.previous_line&&"{"!==this._output.previous_line.item(-1)&&this._output.ensure_empty_line_above("/",","),this._output.space_before_token=!0,"expand"===this._options.brace_style?(this._output.add_new_line(),this.print_string(this._ch),this.indent(),this._output.set_indent(this._indentLevel)):("("===r?this._output.space_before_token=!1:","!==r&&this.indent(),this.print_string(this._ch)),this.eatWhitespace(!0),this._output.add_new_line();else if("}"===this._ch)this.outdent(),this._output.add_new_line(),"{"===r&&this._output.trim(!0),i&&(this.outdent(),i=!1),this.print_string(this._ch),n=!1,this._nestedLevel&&this._nestedLevel--,this.eatWhitespace(!0),this._output.add_new_line(),
+this._options.newline_between_rules&&!this._output.just_added_blankline()&&"}"!==this._input.peek()&&this._output.add_new_line(!0),")"===this._input.peek()&&(this._output.trim(!0),"expand"===this._options.brace_style&&this._output.add_new_line(!0));else if(":"===this._ch){for(f=0;f<this.NON_SEMICOLON_NEWLINE_PROPERTY.length;f++)if(this._input.lookBack(this.NON_SEMICOLON_NEWLINE_PROPERTY[f])){d=!0;break}!n&&!_||this._input.lookBack("&")||this.foundNestedPseudoClass()||this._input.lookBack("(")||s||0!==e?(this._input.lookBack(" ")&&(this._output.space_before_token=!0),":"===this._input.peek()?(this._ch=this._input.next(),this.print_string("::")):this.print_string(":")):(this.print_string(":"),i||(this._output.space_before_token=i=!0,this.eatWhitespace(!0),this.indent()))}else'"'===this._ch||"'"===this._ch?(this.preserveSingleSpace('"'===r||"'"===r||a),this.print_string(this._ch+this.eatString(this._ch)),this.eatWhitespace(!0)):";"===this._ch?(d=!1,0===e?(i&&(this.outdent(),i=!1),s=!1,this.print_string(this._ch),this.eatWhitespace(!0),"/"!==this._input.peek()&&this._output.add_new_line()):(this.print_string(this._ch),this.eatWhitespace(!0),this._output.space_before_token=!0)):"("===this._ch?this._input.lookBack("url")?(this.print_string(this._ch),this.eatWhitespace(),e++,this.indent(),this._ch=this._input.next(),")"===this._ch||'"'===this._ch||"'"===this._ch?this._input.back():this._ch&&(this.print_string(this._ch+this.eatString(")")),e&&(e--,this.outdent()))):(g=!1,this._input.lookBack("with")&&(g=!0),this.preserveSingleSpace(a||g),this.print_string(this._ch),i&&"$"===r&&this._options.selector_separator_newline?(this._output.add_new_line(),l=!0):(this.eatWhitespace(),e++,this.indent())):")"===this._ch?(e&&(e--,this.outdent()),l&&";"===this._input.peek()&&this._options.selector_separator_newline&&(l=!1,this.outdent(),this._output.add_new_line()),this.print_string(this._ch)):","===this._ch?(this.print_string(this._ch),this.eatWhitespace(!0),!this._options.selector_separator_newline||i&&!l||0!==e||s?this._output.space_before_token=!0:this._output.add_new_line()):">"!==this._ch&&"+"!==this._ch&&"~"!==this._ch||i||0!==e?"]"===this._ch?this.print_string(this._ch):"["===this._ch?(this.preserveSingleSpace(a),this.print_string(this._ch)):"="===this._ch?(this.eatWhitespace(),this.print_string("="),x.test(this._ch)&&(this._ch="")):"!"!==this._ch||this._input.lookBack("\\")?(this.preserveSingleSpace('"'===r||"'"===r||a),this.print_string(this._ch),!this._output.just_added_newline()&&"\n"===this._input.peek()&&d&&this._output.add_new_line()):(this._output.space_before_token=!0,this.print_string(this._ch)):this._options.space_around_combinator?(this._output.space_before_token=!0,this.print_string(this._ch),this._output.space_before_token=!0):(this.print_string(this._ch),this.eatWhitespace(),this._ch&&x.test(this._ch)&&(this._ch=""))}return this._output.get_code(h)},t.exports.Beautifier=i},function(t,e,n){var i=n(6).Options;function _(t){var e,n;for(i.call(this,t,"css"),this.selector_separator_newline=this._get_boolean("selector_separator_newline",!0),this.newline_between_rules=this._get_boolean("newline_between_rules",!0),t=this._get_boolean("space_around_selector_separator"),this.space_around_combinator=this._get_boolean("space_around_combinator")||t,e=this._get_selection_list("brace_style",["collapse","expand","end-expand","none","preserve-inline"]),this.brace_style="collapse",n=0;n<e.length;n++)"expand"!==e[n]?this.brace_style="collapse":this.brace_style=e[n]}_.prototype=new i,t.exports.Options=_}],i={};t=function _(t){var e=i[t];return e!==undefined||(e=i[t]={exports:{}},n[t](e,e.exports,_)),e.exports}(15),a=t}(),t=a,void 0!==u?u.css_beautify=t:"undefined"!=typeof window?window.css_beautify=t:"undefined"!=typeof global&&(global.css_beautify=t),function(){"use strict";var t,n=[,,function(t){function _(t){this.__parent=t,this.__character_count=0,this.__indent_count=-1,this.__alignment_count=0,this.__wrap_point_index=0,this.__wrap_point_character_count=0,this.__wrap_point_indent_count=-1,this.__wrap_point_alignment_count=0,this.__items=[]}function n(t,e){this.__cache=[""],this.__indent_size=t.indent_size,this.__indent_string=t.indent_char,t.indent_with_tabs||(this.__indent_string=new Array(t.indent_size+1).join(t.indent_char)),e=e||"",0<t.indent_level&&(e=new Array(t.indent_level+1).join(this.__indent_string)),this.__base_string=e,this.__base_string_length=e.length}function e(t,e){this.__indent_cache=new n(t,e),this.raw=!1,this._end_with_newline=t.end_with_newline,this.indent_size=t.indent_size,this.wrap_line_length=t.wrap_line_length,this.indent_empty_lines=t.indent_empty_lines,this.__lines=[],this.previous_line=null,this.current_line=null,this.next_line=new _(this),this.space_before_token=!1,this.non_breaking_space=!1,this.previous_token_wrapped=!1,this.__add_outputline()}_.prototype.clone_empty=function(){var t=new _(this.__parent);return t.set_indent(this.__indent_count,this.__alignment_count),t},_.prototype.item=function(t){return t<0?this.__items[this.__items.length+t]:this.__items[t]},_.prototype.has_match=function(t){for(var e=this.__items.length-1;0<=e;e--)if(this.__items[e].match(t))return!0;return!1},_.prototype.set_indent=function(t,e){this.is_empty()&&(this.__indent_count=t||0,this.__alignment_count=e||0,this.__character_count=this.__parent.get_indent_size(this.__indent_count,this.__alignment_count))},_.prototype._set_wrap_point=function(){this.__parent.wrap_line_length&&(this.__wrap_point_index=this.__items.length,this.__wrap_point_character_count=this.__character_count,this.__wrap_point_indent_count=this.__parent.next_line.__indent_count,this.__wrap_point_alignment_count=this.__parent.next_line.__alignment_count)},_.prototype._should_wrap=function(){return this.__wrap_point_index&&this.__character_count>this.__parent.wrap_line_length&&this.__wrap_point_character_count>this.__parent.next_line.__character_count},_.prototype._allow_wrap=function(){var t;return!!this._should_wrap()&&(
+this.__parent.add_new_line(),(t=this.__parent.current_line).set_indent(this.__wrap_point_indent_count,this.__wrap_point_alignment_count),t.__items=this.__items.slice(this.__wrap_point_index),this.__items=this.__items.slice(0,this.__wrap_point_index),t.__character_count+=this.__character_count-this.__wrap_point_character_count,this.__character_count=this.__wrap_point_character_count," "===t.__items[0]&&(t.__items.splice(0,1),--t.__character_count),!0)},_.prototype.is_empty=function(){return 0===this.__items.length},_.prototype.last=function(){return this.is_empty()?null:this.__items[this.__items.length-1]},_.prototype.push=function(t){this.__items.push(t);var e=t.lastIndexOf("\n");-1!==e?this.__character_count=t.length-e:this.__character_count+=t.length},_.prototype.pop=function(){var t=null;return this.is_empty()||(t=this.__items.pop(),this.__character_count-=t.length),t},_.prototype._remove_indent=function(){0<this.__indent_count&&(--this.__indent_count,this.__character_count-=this.__parent.indent_size)},_.prototype._remove_wrap_indent=function(){0<this.__wrap_point_indent_count&&--this.__wrap_point_indent_count},_.prototype.trim=function(){for(;" "===this.last();)this.__items.pop(),--this.__character_count},_.prototype.toString=function(){var t="";return this.is_empty()?this.__parent.indent_empty_lines&&(t=this.__parent.get_indent_string(this.__indent_count)):(t=this.__parent.get_indent_string(this.__indent_count,this.__alignment_count),t+=this.__items.join("")),t},n.prototype.get_indent_size=function(t,e){var n=this.__base_string_length;return n=(n=t<0?0:n)+t*this.__indent_size+(e=e||0)},n.prototype.get_indent_string=function(t,e){var n=this.__base_string;return e=e||0,t<0&&(t=0,n=""),e+=t*this.__indent_size,this.__ensure_cache(e),n+=this.__cache[e]},n.prototype.__ensure_cache=function(t){for(;t>=this.__cache.length;)this.__add_column()},n.prototype.__add_column=function(){var t,e=this.__cache.length,n="";this.__indent_size&&e>=this.__indent_size&&(e-=(t=Math.floor(e/this.__indent_size))*this.__indent_size,n=new Array(t+1).join(this.__indent_string)),e&&(n+=new Array(e+1).join(" ")),this.__cache.push(n)},e.prototype.__add_outputline=function(){this.previous_line=this.current_line,this.current_line=this.next_line.clone_empty(),this.__lines.push(this.current_line)},e.prototype.get_line_number=function(){return this.__lines.length},e.prototype.get_indent_string=function(t,e){return this.__indent_cache.get_indent_string(t,e)},e.prototype.get_indent_size=function(t,e){return this.__indent_cache.get_indent_size(t,e)},e.prototype.is_empty=function(){return!this.previous_line&&this.current_line.is_empty()},e.prototype.add_new_line=function(t){return!(this.is_empty()||!t&&this.just_added_newline())&&(this.raw||this.__add_outputline(),!0)},e.prototype.get_code=function(t){var e;return this.trim(!0),(e=this.current_line.pop())&&("\n"===e[e.length-1]&&(e=e.replace(/\n+$/g,"")),this.current_line.push(e)),this._end_with_newline&&this.__add_outputline(),e=this.__lines.join("\n"),e="\n"!==t?e.replace(/[\n]/g,t):e},e.prototype.set_wrap_point=function(){this.current_line._set_wrap_point()},e.prototype.set_indent=function(t,e){return this.next_line.set_indent(t=t||0,e=e||0),1<this.__lines.length?(this.current_line.set_indent(t,e),!0):(this.current_line.set_indent(),!1)},e.prototype.add_raw_token=function(t){for(var e=0;e<t.newlines;e++)this.__add_outputline();this.current_line.set_indent(-1),this.current_line.push(t.whitespace_before),this.current_line.push(t.text),this.space_before_token=!1,this.non_breaking_space=!1,this.previous_token_wrapped=!1},e.prototype.add_token=function(t){this.__add_space_before_token(),this.current_line.push(t),this.space_before_token=!1,this.non_breaking_space=!1,this.previous_token_wrapped=this.current_line._allow_wrap()},e.prototype.__add_space_before_token=function(){this.space_before_token&&!this.just_added_newline()&&(this.non_breaking_space||this.set_wrap_point(),this.current_line.push(" "))},e.prototype.remove_indent=function(t){for(var e=this.__lines.length;t<e;)this.__lines[t]._remove_indent(),t++;this.current_line._remove_wrap_indent()},e.prototype.trim=function(t){for(t=t!==undefined&&t,this.current_line.trim();t&&1<this.__lines.length&&this.current_line.is_empty();)this.__lines.pop(),this.current_line=this.__lines[this.__lines.length-1],this.current_line.trim();this.previous_line=1<this.__lines.length?this.__lines[this.__lines.length-2]:null},e.prototype.just_added_newline=function(){return this.current_line.is_empty()},e.prototype.just_added_blankline=function(){return this.is_empty()||this.current_line.is_empty()&&this.previous_line.is_empty()},e.prototype.ensure_empty_line_above=function(t,e){for(var n,i=this.__lines.length-2;0<=i&&!(n=this.__lines[i]).is_empty();){if(0!==n.item(0).indexOf(t)&&n.item(-1)!==e){this.__lines.splice(i+1,0,new _(this)),this.previous_line=this.__lines[this.__lines.length-2];break}i--}},t.exports.Output=e},function(t){t.exports.Token=function(t,e,n,i){this.type=t,this.text=e,this.comments_before=null,this.newlines=n||0,this.whitespace_before=i||"",this.parent=null,this.next=null,this.previous=null,this.opened=null,this.closed=null,this.directives=null}},,,function(t){function e(t,e){this.raw_options=n(t,e),this.disabled=this._get_boolean("disabled"),this.eol=this._get_characters("eol","auto"),this.end_with_newline=this._get_boolean("end_with_newline"),this.indent_size=this._get_number("indent_size",4),this.indent_char=this._get_characters("indent_char"," "),this.indent_level=this._get_number("indent_level"),this.preserve_newlines=this._get_boolean("preserve_newlines",!0),this.max_preserve_newlines=this._get_number("max_preserve_newlines",32786),this.preserve_newlines||(this.max_preserve_newlines=0),this.indent_with_tabs=this._get_boolean("indent_with_tabs","\t"===this.indent_char),this.indent_with_tabs&&(this.indent_char="\t",1===this.indent_size&&(this.indent_size=4)),this.wrap_line_length=this._get_number("wrap_line_length",
+this._get_number("max_char")),this.indent_empty_lines=this._get_boolean("indent_empty_lines"),this.templating=this._get_selection_list("templating",["auto","none","angular","django","erb","handlebars","php","smarty"],["auto"])}function n(t,e){var n,i={};for(n in t=_(t))n!==e&&(i[n]=t[n]);if(e&&t[e])for(n in t[e])i[n]=t[e][n];return i}function _(t){var e,n={};for(e in t)n[e.replace(/-/g,"_")]=t[e];return n}e.prototype._get_array=function(t,e){t=this.raw_options[t],e=e||[];return"object"==typeof t?null!==t&&"function"==typeof t.concat&&(e=t.concat()):"string"==typeof t&&(e=t.split(/[^a-zA-Z0-9_\/\-]+/)),e},e.prototype._get_boolean=function(t,e){t=this.raw_options[t],e=t===undefined?!!e:!!t;return e},e.prototype._get_characters=function(t,e){t=this.raw_options[t],e=e||"";return e="string"==typeof t?t.replace(/\\r/,"\r").replace(/\\n/,"\n").replace(/\\t/,"\t"):e},e.prototype._get_number=function(t,e){var t=this.raw_options[t];return e=parseInt(e,10),isNaN(e)&&(e=0),t=parseInt(t,10),t=isNaN(t)?e:t},e.prototype._get_selection=function(t,e,n){n=this._get_selection_list(t,e,n);if(1!==n.length)throw new Error("Invalid Option Value: The option '"+t+"' can only be one of the following values:\n"+e+"\nYou passed in: '"+this.raw_options[t]+"'");return n[0]},e.prototype._get_selection_list=function(t,e,n){if(!e||0===e.length)throw new Error("Selection list cannot be empty.");if(n=n||[e[0]],!this._is_valid_selection(n,e))throw new Error("Invalid Default Value!");n=this._get_array(t,n);if(!this._is_valid_selection(n,e))throw new Error("Invalid Option Value: The option '"+t+"' can contain only the following values:\n"+e+"\nYou passed in: '"+this.raw_options[t]+"'");return n},e.prototype._is_valid_selection=function(t,e){return t.length&&e.length&&!t.some(function(t){return-1===e.indexOf(t)})},t.exports.Options=e,t.exports.normalizeOpts=_,t.exports.mergeOpts=n},,function(t){var i=RegExp.prototype.hasOwnProperty("sticky");function e(t){this.__input=t||"",this.__input_length=this.__input.length,this.__position=0}e.prototype.restart=function(){this.__position=0},e.prototype.back=function(){0<this.__position&&--this.__position},e.prototype.hasNext=function(){return this.__position<this.__input_length},e.prototype.next=function(){var t=null;return this.hasNext()&&(t=this.__input.charAt(this.__position),this.__position+=1),t},e.prototype.peek=function(t){var e=null;return t=t||0,e=0<=(t+=this.__position)&&t<this.__input_length?this.__input.charAt(t):e},e.prototype.__match=function(t,e){t.lastIndex=e;var n=t.exec(this.__input);return!n||i&&t.sticky||n.index!==e&&(n=null),n},e.prototype.test=function(t,e){return e=e||0,0<=(e+=this.__position)&&e<this.__input_length&&!!this.__match(t,e)},e.prototype.testChar=function(t,e){e=this.peek(e);return t.lastIndex=0,null!==e&&t.test(e)},e.prototype.match=function(t){t=this.__match(t,this.__position);return t?this.__position+=t[0].length:t=null,t},e.prototype.read=function(t,e,n){var i,_="";return t&&(i=this.match(t))&&(_+=i[0]),!e||!i&&t||(_+=this.readUntil(e,n)),_},e.prototype.readUntil=function(t,e){var n=this.__position;return t.lastIndex=this.__position,(t=t.exec(this.__input))?(n=t.index,e&&(n+=t[0].length)):n=this.__input_length,e=this.__input.substring(this.__position,n),this.__position=n,e},e.prototype.readUntilAfter=function(t){return this.readUntil(t,!0)},e.prototype.get_regexp=function(t,e){var n=null,e=e&&i?"y":"g";return"string"==typeof t&&""!==t?n=new RegExp(t,e):t&&(n=new RegExp(t.source,e)),n},e.prototype.get_literal_regexp=function(t){return RegExp(t.replace(/[-\/\\^$*+?.()|[\]{}]/g,"\\$&"))},e.prototype.peekUntilAfter=function(t){var e=this.__position,t=this.readUntilAfter(t);return this.__position=e,t},e.prototype.lookBack=function(t){var e=this.__position-1;return e>=t.length&&this.__input.substring(e-t.length,e).toLowerCase()===t},t.exports.InputScanner=e},function(t,e,n){var i=n(8).InputScanner,s=n(3).Token,a=n(10).TokenStream,_=n(11).WhitespacePattern,r={START:"TK_START",RAW:"TK_RAW",EOF:"TK_EOF"},n=function(t,e){this._input=new i(t),this._options=e||{},this.__tokens=null,this._patterns={},this._patterns.whitespace=new _(this._input)};n.prototype.tokenize=function(){var t,e,n,i,_;for(this._input.restart(),this.__tokens=new a,this._reset(),e=new s(r.START,""),n=null,i=[],_=new a;e.type!==r.EOF;){for(t=this._get_next_token(e,n);this._is_comment(t);)_.add(t),t=this._get_next_token(e,n);_.isEmpty()||(t.comments_before=_,_=new a),t.parent=n,this._is_opening(t)?(i.push(n),n=t):n&&this._is_closing(t,n)&&((t.opened=n).closed=t,n=i.pop(),t.parent=n),(t.previous=e).next=t,this.__tokens.add(t),e=t}return this.__tokens},n.prototype._is_first_token=function(){return this.__tokens.isEmpty()},n.prototype._reset=function(){},n.prototype._get_next_token=function(t,e){this._readWhitespace();var n=this._input.read(/.+/g);return n?this._create_token(r.RAW,n):this._create_token(r.EOF,"")},n.prototype._is_comment=function(t){return!1},n.prototype._is_opening=function(t){return!1},n.prototype._is_closing=function(t,e){return!1},n.prototype._create_token=function(t,e){return new s(t,e,this._patterns.whitespace.newline_count,this._patterns.whitespace.whitespace_before_token)},n.prototype._readWhitespace=function(){return this._patterns.whitespace.read()},t.exports.Tokenizer=n,t.exports.TOKEN=r},function(t){function e(t){this.__tokens=[],this.__tokens_length=this.__tokens.length,this.__position=0,this.__parent_token=t}e.prototype.restart=function(){this.__position=0},e.prototype.isEmpty=function(){return 0===this.__tokens_length},e.prototype.hasNext=function(){return this.__position<this.__tokens_length},e.prototype.next=function(){var t=null;return this.hasNext()&&(t=this.__tokens[this.__position],this.__position+=1),t},e.prototype.peek=function(t){var e=null;return t=t||0,e=0<=(t+=this.__position)&&t<this.__tokens_length?this.__tokens[t]:e},e.prototype.add=function(t){this.__parent_token&&(t.parent=this.__parent_token),this.__tokens.push(t),this.__tokens_length+=1},
+t.exports.TokenStream=e},function(t,e,n){var i=n(12).Pattern;function _(t,e){i.call(this,t,e),e?this._line_regexp=this._input.get_regexp(e._line_regexp):this.__set_whitespace_patterns("",""),this.newline_count=0,this.whitespace_before_token=""}(_.prototype=new i).__set_whitespace_patterns=function(t,e){this._match_pattern=this._input.get_regexp("["+(t+="\\t ")+(e+="\\n\\r")+"]+",!0),this._newline_regexp=this._input.get_regexp("\\r\\n|["+e+"]")},_.prototype.read=function(){var t,e;return this.newline_count=0,this.whitespace_before_token=""," "===(t=this._input.read(this._match_pattern))?this.whitespace_before_token=" ":t&&(e=this.__split(this._newline_regexp,t),this.newline_count=e.length-1,this.whitespace_before_token=e[this.newline_count]),t},_.prototype.matching=function(t,e){var n=this._create();return n.__set_whitespace_patterns(t,e),n._update(),n},_.prototype._create=function(){return new _(this._input,this)},_.prototype.__split=function(t,e){for(var n=t.lastIndex=0,i=[],_=t.exec(e);_;)i.push(e.substring(n,_.index)),n=_.index+_[0].length,_=t.exec(e);return n<e.length?i.push(e.substring(n,e.length)):i.push(""),i},t.exports.WhitespacePattern=_},function(t){function e(t,e){this._input=t,this._starting_pattern=null,this._match_pattern=null,this._until_pattern=null,this._until_after=!1,e&&(this._starting_pattern=this._input.get_regexp(e._starting_pattern,!0),this._match_pattern=this._input.get_regexp(e._match_pattern,!0),this._until_pattern=this._input.get_regexp(e._until_pattern),this._until_after=e._until_after)}e.prototype.read=function(){var t=this._input.read(this._starting_pattern);return this._starting_pattern&&!t||(t+=this._input.read(this._match_pattern,this._until_pattern,this._until_after)),t},e.prototype.read_match=function(){return this._input.match(this._match_pattern)},e.prototype.until_after=function(t){var e=this._create();return e._until_after=!0,e._until_pattern=this._input.get_regexp(t),e._update(),e},e.prototype.until=function(t){var e=this._create();return e._until_after=!1,e._until_pattern=this._input.get_regexp(t),e._update(),e},e.prototype.starting_with=function(t){var e=this._create();return e._starting_pattern=this._input.get_regexp(t,!0),e._update(),e},e.prototype.matching=function(t){var e=this._create();return e._match_pattern=this._input.get_regexp(t,!0),e._update(),e},e.prototype._create=function(){return new e(this._input,this)},e.prototype._update=function(){},t.exports.Pattern=e},function(t){function e(t,e){t="string"==typeof t?t:t.source,e="string"==typeof e?e:e.source,this.__directives_block_pattern=new RegExp(t+/ beautify( \w+[:]\w+)+ /.source+e,"g"),this.__directive_pattern=/ (\w+)[:](\w+)/g,this.__directives_end_ignore_pattern=new RegExp(t+/\sbeautify\signore:end\s/.source+e,"g")}e.prototype.get_directives=function(t){var e,n;if(!t.match(this.__directives_block_pattern))return null;for(e={},this.__directive_pattern.lastIndex=0,n=this.__directive_pattern.exec(t);n;)e[n[1]]=n[2],n=this.__directive_pattern.exec(t);return e},e.prototype.readIgnored=function(t){return t.readUntilAfter(this.__directives_end_ignore_pattern)},t.exports.Directives=e},function(t,e,n){var i=n(12).Pattern,_={django:!1,erb:!1,handlebars:!1,php:!1,smarty:!1,angular:!1};function s(t,e){i.call(this,t,e),this.__template_pattern=null,this._disabled=Object.assign({},_),this._excluded=Object.assign({},_),e&&(this.__template_pattern=this._input.get_regexp(e.__template_pattern),this._excluded=Object.assign(this._excluded,e._excluded),this._disabled=Object.assign(this._disabled,e._disabled));e=new i(t);this.__patterns={handlebars_comment:e.starting_with(/{{!--/).until_after(/--}}/),handlebars_unescaped:e.starting_with(/{{{/).until_after(/}}}/),handlebars:e.starting_with(/{{/).until_after(/}}/),php:e.starting_with(/<\?(?:[= ]|php)/).until_after(/\?>/),erb:e.starting_with(/<%[^%]/).until_after(/[^%]%>/),django:e.starting_with(/{%/).until_after(/%}/),django_value:e.starting_with(/{{/).until_after(/}}/),django_comment:e.starting_with(/{#/).until_after(/#}/),smarty:e.starting_with(/{(?=[^}{\s\n])/).until_after(/[^\s\n]}/),smarty_comment:e.starting_with(/{\*/).until_after(/\*}/),smarty_literal:e.starting_with(/{literal}/).until_after(/{\/literal}/)}}(s.prototype=new i)._create=function(){return new s(this._input,this)},s.prototype._update=function(){this.__set_templated_pattern()},s.prototype.disable=function(t){var e=this._create();return e._disabled[t]=!0,e._update(),e},s.prototype.read_options=function(t){var e,n=this._create();for(e in _)n._disabled[e]=-1===t.templating.indexOf(e);return n._update(),n},s.prototype.exclude=function(t){var e=this._create();return e._excluded[t]=!0,e._update(),e},s.prototype.read=function(){for(var t="",t=this._match_pattern?this._input.read(this._starting_pattern):this._input.read(this._starting_pattern,this.__template_pattern),e=this._read_template();e;)this._match_pattern?e+=this._input.read(this._match_pattern):e+=this._input.readUntil(this.__template_pattern),t+=e,e=this._read_template();return this._until_after&&(t+=this._input.readUntilAfter(this._until_pattern)),t},s.prototype.__set_templated_pattern=function(){var t=[];this._disabled.php||t.push(this.__patterns.php._starting_pattern.source),this._disabled.handlebars||t.push(this.__patterns.handlebars._starting_pattern.source),this._disabled.erb||t.push(this.__patterns.erb._starting_pattern.source),this._disabled.django||(t.push(this.__patterns.django._starting_pattern.source),t.push(this.__patterns.django_value._starting_pattern.source),t.push(this.__patterns.django_comment._starting_pattern.source)),this._disabled.smarty||t.push(this.__patterns.smarty._starting_pattern.source),this._until_pattern&&t.push(this._until_pattern.source),this.__template_pattern=this._input.get_regexp("(?:"+t.join("|")+")")},s.prototype._read_template=function(){var t,e="",n=this._input.peek();return"<"===n?(t=this._input.peek(1),this._disabled.php||this._excluded.php||"?"!==t||(e=e||this.__patterns.php.read()),
+this._disabled.erb||this._excluded.erb||"%"!==t||(e=e||this.__patterns.erb.read())):"{"===n&&(this._disabled.handlebars||this._excluded.handlebars||(e=(e=(e=e||this.__patterns.handlebars_comment.read())||this.__patterns.handlebars_unescaped.read())||this.__patterns.handlebars.read()),this._disabled.django||(this._excluded.django||this._excluded.handlebars||(e=e||this.__patterns.django_value.read()),this._excluded.django||(e=(e=e||this.__patterns.django_comment.read())||this.__patterns.django.read())),this._disabled.smarty||this._disabled.django&&this._disabled.handlebars&&(e=(e=(e=e||this.__patterns.smarty_comment.read())||this.__patterns.smarty_literal.read())||this.__patterns.smarty.read())),e},t.exports.TemplatablePattern=s},,,,function(t,e,n){var _=n(19).Beautifier,i=n(20).Options;t.exports=function(t,e,n,i){return new _(t,e,n,i).beautify()},t.exports.defaultOptions=function(){return new i}},function(e,n,t){var _,s,o,i,r,u=t(20).Options,d=t(2).Output,f=t(21).Tokenizer,h=t(21).TOKEN,g=/\r\n|[\r\n]/,b=/\r\n|[\r\n]/g,p=function(t,e){this.indent_level=0,this.alignment_size=0,this.max_preserve_newlines=t.max_preserve_newlines,this.preserve_newlines=t.preserve_newlines,this._output=new d(t,e)};function a(t,e){return-1!==e.indexOf(t)}function m(t,e,n){this.parent=t||null,this.tag=e?e.tag_name:"",this.indent_level=n||0,this.parser_token=e||null}function l(t){this._printer=t,this._current_frame=null}function c(t,e,n,i){this._source_text=t||"",e=e||{},this._js_beautify=n,this._css_beautify=i,this._tag_stack=null;t=new u(e,"html");this._options=t,this._is_wrap_attributes_force="force"===this._options.wrap_attributes.substr(0,"force".length),this._is_wrap_attributes_force_expand_multiline="force-expand-multiline"===this._options.wrap_attributes,this._is_wrap_attributes_force_aligned="force-aligned"===this._options.wrap_attributes,this._is_wrap_attributes_aligned_multiple="aligned-multiple"===this._options.wrap_attributes,this._is_wrap_attributes_preserve="preserve"===this._options.wrap_attributes.substr(0,"preserve".length),this._is_wrap_attributes_preserve_aligned="preserve-aligned"===this._options.wrap_attributes}p.prototype.current_line_has_match=function(t){return this._output.current_line.has_match(t)},p.prototype.set_space_before_token=function(t,e){this._output.space_before_token=t,this._output.non_breaking_space=e},p.prototype.set_wrap_point=function(){this._output.set_indent(this.indent_level,this.alignment_size),this._output.set_wrap_point()},p.prototype.add_raw_token=function(t){this._output.add_raw_token(t)},p.prototype.print_preserved_newlines=function(t){var e,n=0;for(t.type!==h.TEXT&&t.previous.type!==h.TEXT&&(n=t.newlines?1:0),this.preserve_newlines&&(n=t.newlines<this.max_preserve_newlines+1?t.newlines:this.max_preserve_newlines+1),e=0;e<n;e++)this.print_newline(0<e);return 0!==n},p.prototype.traverse_whitespace=function(t){return!(!t.whitespace_before&&!t.newlines)&&(this.print_preserved_newlines(t)||(this._output.space_before_token=!0),!0)},p.prototype.previous_token_wrapped=function(){return this._output.previous_token_wrapped},p.prototype.print_newline=function(t){this._output.add_new_line(t)},p.prototype.print_token=function(t){t.text&&(this._output.set_indent(this.indent_level,this.alignment_size),this._output.add_token(t.text))},p.prototype.indent=function(){this.indent_level++},p.prototype.deindent=function(){0<this.indent_level&&(this.indent_level--,this._output.set_indent(this.indent_level,this.alignment_size))},p.prototype.get_full_indent=function(t){return(t=this.indent_level+(t||0))<1?"":this._output.get_indent_string(t)},_=function(t){for(var e=null,n=t.next;n.type!==h.EOF&&t.closed!==n;){if(n.type===h.ATTRIBUTE&&"type"===n.text){n.next&&n.next.type===h.EQUALS&&n.next.next&&n.next.next.type===h.VALUE&&(e=n.next.next.text);break}n=n.next}return e},s=function(t,e){var n=null,i=null;return e.closed?("script"===t?n="text/javascript":"style"===t&&(n="text/css"),-1<(n=_(e)||n).search("text/css")?i="css":-1<n.search(/module|((text|application|dojo)\/(x-)?(javascript|ecmascript|jscript|livescript|(ld\+)?json|method|aspect))/)?i="javascript":-1<n.search(/(text|application|dojo)\/(x-)?(html)/)?i="html":-1<n.search(/test\/null/)&&(i="null"),i):null},l.prototype.get_parser_token=function(){return this._current_frame?this._current_frame.parser_token:null},l.prototype.record_tag=function(t){t=new m(this._current_frame,t,this._printer.indent_level);this._current_frame=t},l.prototype._try_pop_frame=function(t){var e=null;return t&&(e=t.parser_token,this._printer.indent_level=t.indent_level,this._current_frame=t.parent),e},l.prototype._get_frame=function(t,e){for(var n=this._current_frame;n&&-1===t.indexOf(n.tag);){if(e&&-1!==e.indexOf(n.tag)){n=null;break}n=n.parent}return n},l.prototype.try_pop=function(t,e){t=this._get_frame([t],e);return this._try_pop_frame(t)},l.prototype.indent_to_tag=function(t){t=this._get_frame(t);t&&(this._printer.indent_level=t.indent_level)},c.prototype.beautify=function(){var t,e,n,i,_,s,a,r,u;if(this._options.disabled)return this._source_text;for(t=this._source_text,e=this._options.eol,"auto"===this._options.eol&&(e="\n",t&&g.test(t)&&(e=t.match(g)[0])),n=(t=t.replace(b,"\n")).match(/^[\t ]*/)[0],i={text:"",type:""},_=new o,s=new p(this._options,n),a=new f(t,this._options).tokenize(),this._tag_stack=new l(s),r=null,u=a.next();u.type!==h.EOF;)u.type===h.TAG_OPEN||u.type===h.COMMENT?_=r=this._handle_tag_open(s,u,_,i,a):u.type===h.ATTRIBUTE||u.type===h.EQUALS||u.type===h.VALUE||u.type===h.TEXT&&!_.tag_complete?r=this._handle_inside_tag(s,u,_,i):u.type===h.TAG_CLOSE?r=this._handle_tag_close(s,u,_):u.type===h.TEXT?r=this._handle_text(s,u,_):u.type===h.CONTROL_FLOW_OPEN?r=this._handle_control_flow_open(s,u):u.type===h.CONTROL_FLOW_CLOSE?r=this._handle_control_flow_close(s,u):s.add_raw_token(u),i=r,u=a.next();return s._output.get_code(e)},c.prototype._handle_control_flow_open=function(t,e){var n={text:e.text,type:e.type};return t.set_space_before_token(
+e.newlines||""!==e.whitespace_before,!0),e.newlines?t.print_preserved_newlines(e):t.set_space_before_token(e.newlines||""!==e.whitespace_before,!0),t.print_token(e),t.indent(),n},c.prototype._handle_control_flow_close=function(t,e){var n={text:e.text,type:e.type};return t.deindent(),e.newlines?t.print_preserved_newlines(e):t.set_space_before_token(e.newlines||""!==e.whitespace_before,!0),t.print_token(e),n},c.prototype._handle_tag_close=function(t,e,n){var i={text:e.text,type:e.type};return t.alignment_size=0,n.tag_complete=!0,t.set_space_before_token(e.newlines||""!==e.whitespace_before,!0),n.is_unformatted?t.add_raw_token(e):("<"===n.tag_start_char&&(t.set_space_before_token("/"===e.text[0],!0),this._is_wrap_attributes_force_expand_multiline&&n.has_wrapped_attrs&&t.print_newline(!1)),t.print_token(e)),!n.indent_content||n.is_unformatted||n.is_content_unformatted||(t.indent(),n.indent_content=!1),n.is_inline_element||n.is_unformatted||n.is_content_unformatted||t.set_wrap_point(),i},c.prototype._handle_inside_tag=function(t,e,n,i){var _=n.has_wrapped_attrs,s={text:e.text,type:e.type};return t.set_space_before_token(e.newlines||""!==e.whitespace_before,!0),n.is_unformatted?t.add_raw_token(e):"{"===n.tag_start_char&&e.type===h.TEXT?t.print_preserved_newlines(e)?(e.newlines=0,t.add_raw_token(e)):t.print_token(e):(e.type===h.ATTRIBUTE?t.set_space_before_token(!0):(e.type===h.EQUALS||e.type===h.VALUE&&e.previous.type===h.EQUALS)&&t.set_space_before_token(!1),e.type===h.ATTRIBUTE&&"<"===n.tag_start_char&&((this._is_wrap_attributes_preserve||this._is_wrap_attributes_preserve_aligned)&&(t.traverse_whitespace(e),_=_||0!==e.newlines),this._is_wrap_attributes_force&&n.attr_count>=this._options.wrap_attributes_min_attrs&&(i.type!==h.TAG_OPEN||this._is_wrap_attributes_force_expand_multiline)&&(t.print_newline(!1),_=!0)),t.print_token(e),_=_||t.previous_token_wrapped(),n.has_wrapped_attrs=_),s},c.prototype._handle_text=function(t,e,n){var i={text:e.text,type:"TK_CONTENT"};return n.custom_beautifier_name?this._print_custom_beatifier_text(t,e,n):n.is_unformatted||n.is_content_unformatted?t.add_raw_token(e):(t.traverse_whitespace(e),t.print_token(e)),i},c.prototype._print_custom_beatifier_text=function(t,e,n){var i,_,s,a,r,u=this;if(""!==e.text){if(i=e.text,r=1,a=s="","javascript"===n.custom_beautifier_name&&"function"==typeof this._js_beautify?_=this._js_beautify:"css"===n.custom_beautifier_name&&"function"==typeof this._css_beautify?_=this._css_beautify:"html"===n.custom_beautifier_name&&(_=function(t,e){return new c(t,e,u._js_beautify,u._css_beautify).beautify()}),"keep"===this._options.indent_scripts?r=0:"separate"===this._options.indent_scripts&&(r=-t.indent_level),r=t.get_full_indent(r),i=i.replace(/\n[ \t]*$/,""),"html"!==n.custom_beautifier_name&&"<"===i[0]&&i.match(/^(<!--|<!\[CDATA\[)/)){if(!(n=/^(<!--[^\n]*|<!\[CDATA\[)(\n?)([ \t\n]*)([\s\S]*)(-->|]]>)$/.exec(i)))return void t.add_raw_token(e);s=r+n[1]+"\n",i=n[4],n[5]&&(a=r+n[5]),i=i.replace(/\n[ \t]*$/,""),(n[2]||-1!==n[3].indexOf("\n"))&&(n=n[3].match(/[ \t]+$/))&&(e.whitespace_before=n[0])}i=i&&(_?((n=function(){this.eol="\n"}).prototype=this._options.raw_options,_(r+i,new n)):r+(i=(n=e.whitespace_before)?i.replace(new RegExp("\n("+n+")?","g"),"\n"):i).replace(/\n/g,"\n"+r)),s&&(i=i?s+i+"\n"+a:s+a),t.print_newline(!1),i&&(e.text=i,e.whitespace_before="",e.newlines=0,t.add_raw_token(e),t.print_newline(!0))}},c.prototype._handle_tag_open=function(t,e,n,i,_){var s,a,r=this._get_tag_open_token(e);if(!n.is_unformatted&&!n.is_content_unformatted||n.is_empty_element||e.type!==h.TAG_OPEN||r.is_start_tag?(t.traverse_whitespace(e),this._set_tag_position(t,e,r,n,i),r.is_inline_element||t.set_wrap_point(),t.print_token(e)):(t.add_raw_token(e),r.start_tag_token=this._tag_stack.try_pop(r.tag_name)),r.is_start_tag&&this._is_wrap_attributes_force)for(s=0;(a=_.peek(s)).type===h.ATTRIBUTE&&(r.attr_count+=1),s+=1,a.type!==h.EOF&&a.type!==h.TAG_CLOSE;);return(this._is_wrap_attributes_force_aligned||this._is_wrap_attributes_aligned_multiple||this._is_wrap_attributes_preserve_aligned)&&(r.alignment_size=e.text.length+1),r.tag_complete||r.is_unformatted||(t.alignment_size=r.alignment_size),r},o=function(t,e){var n;this.parent=t||null,this.text="",this.type="TK_TAG_OPEN",this.tag_name="",this.is_inline_element=!1,this.is_unformatted=!1,this.is_content_unformatted=!1,this.is_empty_element=!1,this.is_start_tag=!1,this.is_end_tag=!1,this.indent_content=!1,this.multiline_content=!1,this.custom_beautifier_name=null,this.start_tag_token=null,this.attr_count=0,this.has_wrapped_attrs=!1,this.alignment_size=0,this.tag_complete=!1,this.tag_start_char="",this.tag_check="",e?(this.tag_start_char=e.text[0],this.text=e.text,"<"===this.tag_start_char?(n=e.text.match(/^<([^\s>]*)/),this.tag_check=n?n[1]:""):(n=e.text.match(/^{{~?(?:[\^]|#\*?)?([^\s}]+)/),this.tag_check=n?n[1]:"",(e.text.startsWith("{{#>")||e.text.startsWith("{{~#>"))&&">"===this.tag_check[0]&&(">"===this.tag_check&&null!==e.next?this.tag_check=e.next.text.split(" ")[0]:this.tag_check=e.text.split(">")[1])),this.tag_check=this.tag_check.toLowerCase(),e.type===h.COMMENT&&(this.tag_complete=!0),this.is_start_tag="/"!==this.tag_check.charAt(0),this.tag_name=this.is_start_tag?this.tag_check:this.tag_check.substr(1),this.is_end_tag=!this.is_start_tag||e.closed&&"/>"===e.closed.text,t=2,"{"===this.tag_start_char&&3<=this.text.length&&"~"===this.text.charAt(2)&&(t=3),this.is_end_tag=this.is_end_tag||"{"===this.tag_start_char&&(this.text.length<3||/[^#\^]/.test(this.text.charAt(t)))):this.tag_complete=!0},c.prototype._get_tag_open_token=function(t){t=new o(this._tag_stack.get_parser_token(),t);return t.alignment_size=this._options.wrap_attributes_indent_size,t.is_end_tag=t.is_end_tag||a(t.tag_check,this._options.void_elements),t.is_empty_element=t.tag_complete||t.is_start_tag&&t.is_end_tag,t.is_unformatted=!t.tag_complete&&a(t.tag_check,this._options.unformatted),t.is_content_unformatted=!t.is_empty_element&&a(
+t.tag_check,this._options.content_unformatted),t.is_inline_element=a(t.tag_name,this._options.inline)||this._options.inline_custom_elements&&t.tag_name.includes("-")||"{"===t.tag_start_char,t},c.prototype._set_tag_position=function(t,e,n,i,_){n.is_empty_element||(n.is_end_tag?n.start_tag_token=this._tag_stack.try_pop(n.tag_name):(this._do_optional_end_element(n)&&(n.is_inline_element||t.print_newline(!1)),this._tag_stack.record_tag(n),"script"!==n.tag_name&&"style"!==n.tag_name||n.is_unformatted||n.is_content_unformatted||(n.custom_beautifier_name=s(n.tag_check,e)))),a(n.tag_check,this._options.extra_liners)&&(t.print_newline(!1),t._output.just_added_blankline()||t.print_newline(!0)),n.is_empty_element?("{"===n.tag_start_char&&"else"===n.tag_check&&(this._tag_stack.indent_to_tag(["if","unless","each"]),n.indent_content=!0,t.current_line_has_match(/{{#if/)||t.print_newline(!1)),"!--"===n.tag_name&&_.type===h.TAG_CLOSE&&i.is_end_tag&&-1===n.text.indexOf("\n")||(n.is_inline_element||n.is_unformatted||t.print_newline(!1),this._calcluate_parent_multiline(t,n))):n.is_end_tag?(e=!1,e=(e=n.start_tag_token&&n.start_tag_token.multiline_content)||!n.is_inline_element&&!(i.is_inline_element||i.is_unformatted)&&!(_.type===h.TAG_CLOSE&&n.start_tag_token===i)&&"TK_CONTENT"!==_.type,(e=n.is_content_unformatted||n.is_unformatted?!1:e)&&t.print_newline(!1)):(n.indent_content=!n.custom_beautifier_name,"<"===n.tag_start_char&&("html"===n.tag_name?n.indent_content=this._options.indent_inner_html:"head"===n.tag_name?n.indent_content=this._options.indent_head_inner_html:"body"===n.tag_name&&(n.indent_content=this._options.indent_body_inner_html)),n.is_inline_element||n.is_unformatted||"TK_CONTENT"===_.type&&!n.is_content_unformatted||t.print_newline(!1),this._calcluate_parent_multiline(t,n))},c.prototype._calcluate_parent_multiline=function(t,e){!e.parent||!t._output.just_added_newline()||(e.is_inline_element||e.is_unformatted)&&e.parent.is_inline_element||(e.parent.multiline_content=!0)},i=["address","article","aside","blockquote","details","div","dl","fieldset","figcaption","figure","footer","form","h1","h2","h3","h4","h5","h6","header","hr","main","menu","nav","ol","p","pre","section","table","ul"],r=["a","audio","del","ins","map","noscript","video"],c.prototype._do_optional_end_element=function(t){var e,n=null;if(!t.is_empty_element&&t.is_start_tag&&t.parent)return"body"===t.tag_name?n=n||this._tag_stack.try_pop("head"):"li"===t.tag_name?n=n||this._tag_stack.try_pop("li",["ol","ul","menu"]):"dd"===t.tag_name||"dt"===t.tag_name?n=(n=n||this._tag_stack.try_pop("dt",["dl"]))||this._tag_stack.try_pop("dd",["dl"]):"p"===t.parent.tag_name&&-1!==i.indexOf(t.tag_name)?(e=t.parent.parent)&&-1!==r.indexOf(e.tag_name)||(n=n||this._tag_stack.try_pop("p")):"rp"===t.tag_name||"rt"===t.tag_name?n=(n=n||this._tag_stack.try_pop("rt",["ruby","rtc"]))||this._tag_stack.try_pop("rp",["ruby","rtc"]):"optgroup"===t.tag_name?n=n||this._tag_stack.try_pop("optgroup",["select"]):"option"===t.tag_name?n=n||this._tag_stack.try_pop("option",["select","datalist","optgroup"]):"colgroup"===t.tag_name?n=n||this._tag_stack.try_pop("caption",["table"]):"thead"===t.tag_name?n=(n=n||this._tag_stack.try_pop("caption",["table"]))||this._tag_stack.try_pop("colgroup",["table"]):"tbody"===t.tag_name||"tfoot"===t.tag_name?n=(n=(n=(n=n||this._tag_stack.try_pop("caption",["table"]))||this._tag_stack.try_pop("colgroup",["table"]))||this._tag_stack.try_pop("thead",["table"]))||this._tag_stack.try_pop("tbody",["table"]):"tr"===t.tag_name?n=(n=(n=n||this._tag_stack.try_pop("caption",["table"]))||this._tag_stack.try_pop("colgroup",["table"]))||this._tag_stack.try_pop("tr",["table","thead","tbody","tfoot"]):"th"!==t.tag_name&&"td"!==t.tag_name||(n=(n=n||this._tag_stack.try_pop("td",["table","thead","tbody","tfoot","tr"]))||this._tag_stack.try_pop("th",["table","thead","tbody","tfoot","tr"])),t.parent=this._tag_stack.get_parser_token(),n},e.exports.Beautifier=c},function(t,e,n){var i=n(6).Options;function _(t){i.call(this,t,"html"),1===this.templating.length&&"auto"===this.templating[0]&&(this.templating=["django","erb","handlebars","php"]),this.indent_inner_html=this._get_boolean("indent_inner_html"),this.indent_body_inner_html=this._get_boolean("indent_body_inner_html",!0),this.indent_head_inner_html=this._get_boolean("indent_head_inner_html",!0),this.indent_handlebars=this._get_boolean("indent_handlebars",!0),this.wrap_attributes=this._get_selection("wrap_attributes",["auto","force","force-aligned","force-expand-multiline","aligned-multiple","preserve","preserve-aligned"]),this.wrap_attributes_min_attrs=this._get_number("wrap_attributes_min_attrs",2),this.wrap_attributes_indent_size=this._get_number("wrap_attributes_indent_size",this.indent_size),this.extra_liners=this._get_array("extra_liners",["head","body","/html"]),this.inline=this._get_array("inline",["a","abbr","area","audio","b","bdi","bdo","br","button","canvas","cite","code","data","datalist","del","dfn","em","embed","i","iframe","img","input","ins","kbd","keygen","label","map","mark","math","meter","noscript","object","output","progress","q","ruby","s","samp","select","small","span","strong","sub","sup","svg","template","textarea","time","u","var","video","wbr","text","acronym","big","strike","tt"]),this.inline_custom_elements=this._get_boolean("inline_custom_elements",!0),this.void_elements=this._get_array("void_elements",["area","base","br","col","embed","hr","img","input","keygen","link","menuitem","meta","param","source","track","wbr","!doctype","?xml","basefont","isindex"]),this.unformatted=this._get_array("unformatted",[]),this.content_unformatted=this._get_array("content_unformatted",["pre","textarea"]),this.unformatted_content_delimiter=this._get_characters("unformatted_content_delimiter"),this.indent_scripts=this._get_selection("indent_scripts",["normal","keep","separate"])}_.prototype=new i,t.exports.Options=_},function(t,o,e){var n=e(9).Tokenizer,i=e(9).TOKEN,_=e(13).Directives,s=e(14
+).TemplatablePattern,a=e(12).Pattern,r={TAG_OPEN:"TK_TAG_OPEN",TAG_CLOSE:"TK_TAG_CLOSE",CONTROL_FLOW_OPEN:"TK_CONTROL_FLOW_OPEN",CONTROL_FLOW_CLOSE:"TK_CONTROL_FLOW_CLOSE",ATTRIBUTE:"TK_ATTRIBUTE",EQUALS:"TK_EQUALS",VALUE:"TK_VALUE",COMMENT:"TK_COMMENT",TEXT:"TK_TEXT",UNKNOWN:"TK_UNKNOWN",START:i.START,RAW:i.RAW,EOF:i.EOF},u=new _(/<\!--/,/-->/),e=function(t,e){n.call(this,t,e),this._current_tag_name="",t=new s(this._input).read_options(this._options),e=new a(this._input),this.__patterns={word:t.until(/[\n\r\t <]/),word_control_flow_close_excluded:t.until(/[\n\r\t <}]/),single_quote:t.until_after(/'/),double_quote:t.until_after(/"/),attribute:t.until(/[\n\r\t =>]|\/>/),element_name:t.until(/[\n\r\t >\/]/),angular_control_flow_start:e.matching(/\@[a-zA-Z]+[^({]*[({]/),handlebars_comment:e.starting_with(/{{!--/).until_after(/--}}/),handlebars:e.starting_with(/{{/).until_after(/}}/),handlebars_open:e.until(/[\n\r\t }]/),handlebars_raw_close:e.until(/}}/),comment:e.starting_with(/<!--/).until_after(/-->/),cdata:e.starting_with(/<!\[CDATA\[/).until_after(/]]>/),conditional_comment:e.starting_with(/<!\[/).until_after(/]>/),processing:e.starting_with(/<\?/).until_after(/\?>/)},this._options.indent_handlebars&&(this.__patterns.word=this.__patterns.word.exclude("handlebars"),this.__patterns.word_control_flow_close_excluded=this.__patterns.word_control_flow_close_excluded.exclude("handlebars")),this._unformatted_content_delimiter=null,this._options.unformatted_content_delimiter&&(t=this._input.get_literal_regexp(this._options.unformatted_content_delimiter),this.__patterns.unformatted_content_delimiter=e.matching(t).until_after(t))};(e.prototype=new n)._is_comment=function(t){return!1},e.prototype._is_opening=function(t){return t.type===r.TAG_OPEN||t.type===r.CONTROL_FLOW_OPEN},e.prototype._is_closing=function(t,e){return t.type===r.TAG_CLOSE&&e&&((">"===t.text||"/>"===t.text)&&"<"===e.text[0]||"}}"===t.text&&"{"===e.text[0]&&"{"===e.text[1])||t.type===r.CONTROL_FLOW_CLOSE&&"}"===t.text&&e.text.endsWith("{")},e.prototype._reset=function(){this._current_tag_name=""},e.prototype._get_next_token=function(t,e){var n;return this._readWhitespace(),null===(n=this._input.peek())?this._create_token(r.EOF,""):this._read_open_handlebars(n,e)||this._read_attribute(n,t,e)||this._read_close(n,e)||this._read_control_flows(n,e)||this._read_raw_content(n,t,e)||this._read_content_word(n,e)||this._read_comment_or_cdata(n)||this._read_processing(n)||this._read_open(n,e)||this._create_token(r.UNKNOWN,this._input.next())},e.prototype._read_comment_or_cdata=function(t){var e=null,n=null,i=null;return"<"===t&&("!"===this._input.peek(1)&&((n=this.__patterns.comment.read())?(i=u.get_directives(n))&&"start"===i.ignore&&(n+=u.readIgnored(this._input)):n=this.__patterns.cdata.read()),n&&((e=this._create_token(r.COMMENT,n)).directives=i)),e},e.prototype._read_processing=function(t){var e=null,n=null;return"<"===t&&(n="!"!==(t=this._input.peek(1))&&"?"!==t?n:(n=this.__patterns.conditional_comment.read())||this.__patterns.processing.read())&&((e=this._create_token(r.COMMENT,n)).directives=null),e},e.prototype._read_open=function(t,e){var n=null,i=null;return e&&e.type!==r.CONTROL_FLOW_OPEN||"<"===t&&(n=this._input.next(),"/"===this._input.peek()&&(n+=this._input.next()),n+=this.__patterns.element_name.read(),i=this._create_token(r.TAG_OPEN,n)),i},e.prototype._read_open_handlebars=function(t,e){var n=null,i=null;return e&&e.type!==r.CONTROL_FLOW_OPEN||this._options.indent_handlebars&&"{"===t&&"{"===this._input.peek(1)&&(i="!"===this._input.peek(2)?(n=(n=this.__patterns.handlebars_comment.read())||this.__patterns.handlebars.read(),this._create_token(r.COMMENT,n)):(n=this.__patterns.handlebars_open.read(),this._create_token(r.TAG_OPEN,n))),i},e.prototype._read_control_flows=function(t,e){var n,i,_,s="",a=null;if(!this._options.templating.includes("angular")||!this._options.indent_handlebars)return a;if("@"===t){if(""===(s=this.__patterns.angular_control_flow_start.read()))return a;for(n=s.endsWith("(")?1:0,i=0;(!s.endsWith("{")||n!==i)&&null!==(_=this._input.next());)"("===_?n++:")"===_&&i++,s+=_;a=this._create_token(r.CONTROL_FLOW_OPEN,s)}else"}"===t&&e&&e.type===r.CONTROL_FLOW_OPEN&&(s=this._input.next(),a=this._create_token(r.CONTROL_FLOW_CLOSE,s));return a},e.prototype._read_close=function(t,e){var n=null,i=null;return e&&e.type===r.TAG_OPEN&&("<"===e.text[0]&&(">"===t||"/"===t&&">"===this._input.peek(1))?(n=this._input.next(),"/"===t&&(n+=this._input.next()),i=this._create_token(r.TAG_CLOSE,n)):"{"===e.text[0]&&"}"===t&&"}"===this._input.peek(1)&&(this._input.next(),this._input.next(),i=this._create_token(r.TAG_CLOSE,"}}"))),i},e.prototype._read_attribute=function(t,e,n){var i=null;return n&&"<"===n.text[0]&&("="===t?i=this._create_token(r.EQUALS,this._input.next()):'"'===t||"'"===t?(n=this._input.next(),n+=('"'===t?this.__patterns.double_quote:this.__patterns.single_quote).read(),i=this._create_token(r.VALUE,n)):(t=this.__patterns.attribute.read())&&(i=e.type===r.EQUALS?this._create_token(r.VALUE,t):this._create_token(r.ATTRIBUTE,t))),i},e.prototype._is_content_unformatted=function(t){return-1===this._options.void_elements.indexOf(t)&&(-1!==this._options.content_unformatted.indexOf(t)||-1!==this._options.unformatted.indexOf(t))},e.prototype._read_raw_content=function(t,e,n){var i="";if(n&&"{"===n.text[0])i=this.__patterns.handlebars_raw_close.read();else if(e.type===r.TAG_CLOSE&&"<"===e.opened.text[0]&&"/"!==e.text[0])if("script"===(n=e.opened.text.substr(1).toLowerCase())||"style"===n){if(e=this._read_comment_or_cdata(t))return e.type=r.TEXT,e;i=this._input.readUntil(new RegExp("</"+n+"[\\n\\r\\t ]*?>","ig"))}else this._is_content_unformatted(n)&&(i=this._input.readUntil(new RegExp("</"+n+"[\\n\\r\\t ]*?>","ig")));return i?this._create_token(r.TEXT,i):null},e.prototype._read_content_word=function(t,e){var n="";if(n=(
+n=this._options.unformatted_content_delimiter&&t===this._options.unformatted_content_delimiter[0]?this.__patterns.unformatted_content_delimiter.read():n)||(e&&e.type===r.CONTROL_FLOW_OPEN?this.__patterns.word_control_flow_close_excluded:this.__patterns.word).read())return this._create_token(r.TEXT,n)},t.exports.Tokenizer=e,t.exports.TOKEN=r}],i={};t=function _(t){var e=i[t];return e!==undefined||(e=i[t]={exports:{}},n[t](e,e.exports,_)),e.exports}(18),r=t}(),n=r,void 0!==u?(_=i=u).html_beautify=function(t,e){return n(t,e,i.js_beautify,_.css_beautify)}:"undefined"!=typeof window?window.html_beautify=function(t,e){return n(t,e,window.js_beautify,window.css_beautify)}:"undefined"!=typeof global&&(global.html_beautify=function(t,e){return n(t,e,global.js_beautify,global.css_beautify)})},"@VERSION@");
\ No newline at end of file
diff --git a/lib/editor/atto/plugins/html/yui/build/moodle-atto_html-beautify/moodle-atto_html-beautify.js b/lib/editor/atto/plugins/html/yui/build/moodle-atto_html-beautify/moodle-atto_html-beautify.js
index 6ebc08992d70..4bd9ce1b0259 100644
--- a/lib/editor/atto/plugins/html/yui/build/moodle-atto_html-beautify/moodle-atto_html-beautify.js
+++ b/lib/editor/atto/plugins/html/yui/build/moodle-atto_html-beautify/moodle-atto_html-beautify.js
@@ -77,7 +77,7 @@ Y.namespace('M.atto_html').beautify = exports;
             }                   }
 
     space_after_anon_function (default false) - should the space before an anonymous function's parens be added, "function()" vs "function ()",
-          NOTE: This option is overriden by jslint_happy (i.e. if jslint_happy is true, space_after_anon_function is true by design)
+          NOTE: This option is overridden by jslint_happy (i.e. if jslint_happy is true, space_after_anon_function is true by design)
 
     brace_style (default "collapse") - "collapse" | "expand" | "end-expand" | "none" | any of the former + ",preserve-inline"
             put braces on the same line as control statements (default), or put braces on own line (Allman / ANSI style), or just put end braces on own line, or attempt to keep them where they are.
@@ -928,7 +928,7 @@ Beautifier.prototype.handle_start_block = function(current_token) {
       }
     }
     if (this._flags.last_token.type !== TOKEN.OPERATOR && this._flags.last_token.type !== TOKEN.START_EXPR) {
-      if (this._flags.last_token.type === TOKEN.START_BLOCK && !this._flags.inline_frame) {
+      if (in_array(this._flags.last_token.type, [TOKEN.START_BLOCK, TOKEN.SEMICOLON]) && !this._flags.inline_frame) {
         this.print_newline();
       } else {
         this._output.space_before_token = true;
@@ -1054,7 +1054,9 @@ Beautifier.prototype.handle_word = function(current_token) {
   }
 
   if (this._flags.last_token.type === TOKEN.COMMA || this._flags.last_token.type === TOKEN.START_EXPR || this._flags.last_token.type === TOKEN.EQUALS || this._flags.last_token.type === TOKEN.OPERATOR) {
-    if (!this.start_of_object_property()) {
+    if (!this.start_of_object_property() && !(
+        // start of object property is different for numeric values with +/- prefix operators
+        in_array(this._flags.last_token.text, ['+', '-']) && this._last_last_text === ':' && this._flags.parent.mode === MODE.ObjectLiteral)) {
       this.allow_wrap_or_preserved_newline(current_token);
     }
   }
@@ -1335,6 +1337,12 @@ Beautifier.prototype.handle_operator = function(current_token) {
     return;
   }
 
+  if (in_array(current_token.text, ['-', '+']) && this.start_of_object_property()) {
+    // numeric value with +/- symbol in front as a property
+    this.print_token(current_token);
+    return;
+  }
+
   // Allow line wrapping between operators when operator_position is
   //   set to before or preserve
   if (this._flags.last_token.type === TOKEN.OPERATOR && in_array(this._options.operator_position, OPERATOR_POSITION_BEFORE_OR_PRESERVE)) {
@@ -2161,12 +2169,13 @@ var nonASCIIidentifierChars = "\\u0300-\\u036f\\u0483-\\u0487\\u0591-\\u05bd\\u0
 //var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]");
 //var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]");
 
-var identifierStart = "(?:\\\\u[0-9a-fA-F]{4}|[" + baseASCIIidentifierStartChars + nonASCIIidentifierStartChars + "])";
-var identifierChars = "(?:\\\\u[0-9a-fA-F]{4}|[" + baseASCIIidentifierChars + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "])*";
+var unicodeEscapeOrCodePoint = "\\\\u[0-9a-fA-F]{4}|\\\\u\\{[0-9a-fA-F]+\\}";
+var identifierStart = "(?:" + unicodeEscapeOrCodePoint + "|[" + baseASCIIidentifierStartChars + nonASCIIidentifierStartChars + "])";
+var identifierChars = "(?:" + unicodeEscapeOrCodePoint + "|[" + baseASCIIidentifierChars + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "])*";
 
 exports.identifier = new RegExp(identifierStart + identifierChars, 'g');
 exports.identifierStart = new RegExp(identifierStart);
-exports.identifierMatch = new RegExp("(?:\\\\u[0-9a-fA-F]{4}|[" + baseASCIIidentifierChars + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "])+");
+exports.identifierMatch = new RegExp("(?:" + unicodeEscapeOrCodePoint + "|[" + baseASCIIidentifierChars + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "])+");
 
 var nonASCIIwhitespace = /[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]/; // jshint ignore:line
 
@@ -2355,10 +2364,10 @@ function Options(options, merge_child_field) {
 
   this.indent_empty_lines = this._get_boolean('indent_empty_lines');
 
-  // valid templating languages ['django', 'erb', 'handlebars', 'php', 'smarty']
-  // For now, 'auto' = all off for javascript, all on for html (and inline javascript).
+  // valid templating languages ['django', 'erb', 'handlebars', 'php', 'smarty', 'angular']
+  // For now, 'auto' = all off for javascript, all except angular on for html (and inline javascript/css).
   // other values ignored
-  this.templating = this._get_selection_list('templating', ['auto', 'none', 'django', 'erb', 'handlebars', 'php', 'smarty'], ['auto']);
+  this.templating = this._get_selection_list('templating', ['auto', 'none', 'angular', 'django', 'erb', 'handlebars', 'php', 'smarty'], ['auto']);
 }
 
 Options.prototype._get_array = function(name, default_value) {
@@ -2654,6 +2663,7 @@ Tokenizer.prototype._get_next_token = function(previous_token, open_token) { //
 
   token = token || this._read_non_javascript(c);
   token = token || this._read_string(c);
+  token = token || this._read_pair(c, this._input.peek(1)); // Issue #2062 hack for record type '#{'
   token = token || this._read_word(previous_token);
   token = token || this._read_singles(c);
   token = token || this._read_comment(c);
@@ -2712,6 +2722,19 @@ Tokenizer.prototype._read_singles = function(c) {
   return token;
 };
 
+Tokenizer.prototype._read_pair = function(c, d) {
+  var token = null;
+  if (c === '#' && d === '{') {
+    token = this._create_token(TOKEN.START_BLOCK, c + d);
+  }
+
+  if (token) {
+    this._input.next();
+    this._input.next();
+  }
+  return token;
+};
+
 Tokenizer.prototype._read_punctuation = function() {
   var resulting_string = this.__patterns.punct.read();
 
@@ -2957,6 +2980,9 @@ function unescape_string(s) {
         matched = input_scan.match(/x([0-9A-Fa-f]{2})/g);
       } else if (input_scan.peek() === 'u') {
         matched = input_scan.match(/u([0-9A-Fa-f]{4})/g);
+        if (!matched) {
+          matched = input_scan.match(/u\{([0-9A-Fa-f]+)\}/g);
+        }
       } else {
         out += '\\';
         if (input_scan.hasNext()) {
@@ -2980,7 +3006,9 @@ function unescape_string(s) {
       } else if (escaped >= 0x00 && escaped < 0x20) {
         // leave 0x00...0x1f escaped
         out += '\\' + matched[0];
-        continue;
+      } else if (escaped > 0x10FFFF) {
+        // If the escape sequence is out of bounds, keep the original sequence and continue conversion
+        out += '\\' + matched[0];
       } else if (escaped === 0x22 || escaped === 0x27 || escaped === 0x5c) {
         // single-quote, apostrophe, backslash - escape these
         out += '\\' + String.fromCharCode(escaped);
@@ -3803,7 +3831,8 @@ var template_names = {
   erb: false,
   handlebars: false,
   php: false,
-  smarty: false
+  smarty: false,
+  angular: false
 };
 
 // This lets templates appear anywhere we would do a readUntil
@@ -4609,10 +4638,10 @@ function Options(options, merge_child_field) {
 
   this.indent_empty_lines = this._get_boolean('indent_empty_lines');
 
-  // valid templating languages ['django', 'erb', 'handlebars', 'php', 'smarty']
-  // For now, 'auto' = all off for javascript, all on for html (and inline javascript).
+  // valid templating languages ['django', 'erb', 'handlebars', 'php', 'smarty', 'angular']
+  // For now, 'auto' = all off for javascript, all except angular on for html (and inline javascript/css).
   // other values ignored
-  this.templating = this._get_selection_list('templating', ['auto', 'none', 'django', 'erb', 'handlebars', 'php', 'smarty'], ['auto']);
+  this.templating = this._get_selection_list('templating', ['auto', 'none', 'angular', 'django', 'erb', 'handlebars', 'php', 'smarty'], ['auto']);
 }
 
 Options.prototype._get_array = function(name, default_value) {
@@ -5115,18 +5144,18 @@ function Beautifier(source_text, options) {
 
   // https://developer.mozilla.org/en-US/docs/Web/CSS/At-rule
   this.NESTED_AT_RULE = {
-    "@page": true,
-    "@font-face": true,
-    "@keyframes": true,
+    "page": true,
+    "font-face": true,
+    "keyframes": true,
     // also in CONDITIONAL_GROUP_RULE below
-    "@media": true,
-    "@supports": true,
-    "@document": true
+    "media": true,
+    "supports": true,
+    "document": true
   };
   this.CONDITIONAL_GROUP_RULE = {
-    "@media": true,
-    "@supports": true,
-    "@document": true
+    "media": true,
+    "supports": true,
+    "document": true
   };
   this.NON_SEMICOLON_NEWLINE_PROPERTY = [
     "grid-template-areas",
@@ -5254,8 +5283,7 @@ Beautifier.prototype.beautify = function() {
   // label { content: blue }
   var insidePropertyValue = false;
   var enteringConditionalGroup = false;
-  var insideAtExtend = false;
-  var insideAtImport = false;
+  var insideNonNestedAtRule = false;
   var insideScssMap = false;
   var topCharacter = this._ch;
   var insideNonSemiColonValues = false;
@@ -5310,10 +5338,30 @@ Beautifier.prototype.beautify = function() {
 
       // Ensures any new lines following the comment are preserved
       this.eatWhitespace(true);
-    } else if (this._ch === '@' || this._ch === '$') {
+    } else if (this._ch === '$') {
+      this.preserveSingleSpace(isAfterSpace);
+
+      this.print_string(this._ch);
+
+      // strip trailing space, if present, for hash property checks
+      var variable = this._input.peekUntilAfter(/[: ,;{}()[\]\/='"]/g);
+
+      if (variable.match(/[ :]$/)) {
+        // we have a variable or pseudo-class, add it and insert one space before continuing
+        variable = this.eatString(": ").replace(/\s+$/, '');
+        this.print_string(variable);
+        this._output.space_before_token = true;
+      }
+
+      // might be sass variable
+      if (parenLevel === 0 && variable.indexOf(':') !== -1) {
+        insidePropertyValue = true;
+        this.indent();
+      }
+    } else if (this._ch === '@') {
       this.preserveSingleSpace(isAfterSpace);
 
-      // deal with less propery mixins @{...}
+      // deal with less property mixins @{...}
       if (this._input.peek() === '{') {
         this.print_string(this._ch + this.eatString('}'));
       } else {
@@ -5324,29 +5372,26 @@ Beautifier.prototype.beautify = function() {
 
         if (variableOrRule.match(/[ :]$/)) {
           // we have a variable or pseudo-class, add it and insert one space before continuing
-          variableOrRule = this.eatString(": ").replace(/\s$/, '');
+          variableOrRule = this.eatString(": ").replace(/\s+$/, '');
           this.print_string(variableOrRule);
           this._output.space_before_token = true;
         }
 
-        variableOrRule = variableOrRule.replace(/\s$/, '');
-
-        if (variableOrRule === 'extend') {
-          insideAtExtend = true;
-        } else if (variableOrRule === 'import') {
-          insideAtImport = true;
-        }
+        // might be less variable
+        if (parenLevel === 0 && variableOrRule.indexOf(':') !== -1) {
+          insidePropertyValue = true;
+          this.indent();
 
-        // might be a nesting at-rule
-        if (variableOrRule in this.NESTED_AT_RULE) {
+          // might be a nesting at-rule
+        } else if (variableOrRule in this.NESTED_AT_RULE) {
           this._nestedLevel += 1;
           if (variableOrRule in this.CONDITIONAL_GROUP_RULE) {
             enteringConditionalGroup = true;
           }
-          // might be less variable
-        } else if (!insideRule && parenLevel === 0 && variableOrRule.indexOf(':') !== -1) {
-          insidePropertyValue = true;
-          this.indent();
+
+          // might be a non-nested at-rule
+        } else if (parenLevel === 0 && !insidePropertyValue) {
+          insideNonNestedAtRule = true;
         }
       }
     } else if (this._ch === '#' && this._input.peek() === '{') {
@@ -5358,6 +5403,9 @@ Beautifier.prototype.beautify = function() {
         this.outdent();
       }
 
+      // non nested at rule becomes nested
+      insideNonNestedAtRule = false;
+
       // when entering conditional groups, only rulesets are allowed
       if (enteringConditionalGroup) {
         enteringConditionalGroup = false;
@@ -5398,8 +5446,7 @@ Beautifier.prototype.beautify = function() {
       if (previous_ch === '{') {
         this._output.trim(true);
       }
-      insideAtImport = false;
-      insideAtExtend = false;
+
       if (insidePropertyValue) {
         this.outdent();
         insidePropertyValue = false;
@@ -5433,9 +5480,10 @@ Beautifier.prototype.beautify = function() {
         }
       }
 
-      if ((insideRule || enteringConditionalGroup) && !(this._input.lookBack("&") || this.foundNestedPseudoClass()) && !this._input.lookBack("(") && !insideAtExtend && parenLevel === 0) {
+      if ((insideRule || enteringConditionalGroup) && !(this._input.lookBack("&") || this.foundNestedPseudoClass()) && !this._input.lookBack("(") && !insideNonNestedAtRule && parenLevel === 0) {
         // 'property: value' delimiter
         // which could be in a conditional group query
+
         this.print_string(':');
         if (!insidePropertyValue) {
           insidePropertyValue = true;
@@ -5472,8 +5520,7 @@ Beautifier.prototype.beautify = function() {
           this.outdent();
           insidePropertyValue = false;
         }
-        insideAtExtend = false;
-        insideAtImport = false;
+        insideNonNestedAtRule = false;
         this.print_string(this._ch);
         this.eatWhitespace(true);
 
@@ -5538,7 +5585,7 @@ Beautifier.prototype.beautify = function() {
     } else if (this._ch === ',') {
       this.print_string(this._ch);
       this.eatWhitespace(true);
-      if (this._options.selector_separator_newline && (!insidePropertyValue || insideScssMap) && parenLevel === 0 && !insideAtImport && !insideAtExtend) {
+      if (this._options.selector_separator_newline && (!insidePropertyValue || insideScssMap) && parenLevel === 0 && !insideNonNestedAtRule) {
         this._output.add_new_line();
       } else {
         this._output.space_before_token = true;
@@ -6353,10 +6400,10 @@ function Options(options, merge_child_field) {
 
   this.indent_empty_lines = this._get_boolean('indent_empty_lines');
 
-  // valid templating languages ['django', 'erb', 'handlebars', 'php', 'smarty']
-  // For now, 'auto' = all off for javascript, all on for html (and inline javascript).
+  // valid templating languages ['django', 'erb', 'handlebars', 'php', 'smarty', 'angular']
+  // For now, 'auto' = all off for javascript, all except angular on for html (and inline javascript/css).
   // other values ignored
-  this.templating = this._get_selection_list('templating', ['auto', 'none', 'django', 'erb', 'handlebars', 'php', 'smarty'], ['auto']);
+  this.templating = this._get_selection_list('templating', ['auto', 'none', 'angular', 'django', 'erb', 'handlebars', 'php', 'smarty'], ['auto']);
 }
 
 Options.prototype._get_array = function(name, default_value) {
@@ -7229,7 +7276,8 @@ var template_names = {
   erb: false,
   handlebars: false,
   php: false,
-  smarty: false
+  smarty: false,
+  angular: false
 };
 
 // This lets templates appear anywhere we would do a readUntil
@@ -7572,6 +7620,13 @@ Printer.prototype.indent = function() {
   this.indent_level++;
 };
 
+Printer.prototype.deindent = function() {
+  if (this.indent_level > 0) {
+    this.indent_level--;
+    this._output.set_indent(this.indent_level, this.alignment_size);
+  }
+};
+
 Printer.prototype.get_full_indent = function(level) {
   level = this.indent_level + (level || 0);
   if (level < 1) {
@@ -7757,15 +7812,19 @@ Beautifier.prototype.beautify = function() {
   while (raw_token.type !== TOKEN.EOF) {
 
     if (raw_token.type === TOKEN.TAG_OPEN || raw_token.type === TOKEN.COMMENT) {
-      parser_token = this._handle_tag_open(printer, raw_token, last_tag_token, last_token);
+      parser_token = this._handle_tag_open(printer, raw_token, last_tag_token, last_token, tokens);
       last_tag_token = parser_token;
     } else if ((raw_token.type === TOKEN.ATTRIBUTE || raw_token.type === TOKEN.EQUALS || raw_token.type === TOKEN.VALUE) ||
       (raw_token.type === TOKEN.TEXT && !last_tag_token.tag_complete)) {
-      parser_token = this._handle_inside_tag(printer, raw_token, last_tag_token, tokens);
+      parser_token = this._handle_inside_tag(printer, raw_token, last_tag_token, last_token);
     } else if (raw_token.type === TOKEN.TAG_CLOSE) {
       parser_token = this._handle_tag_close(printer, raw_token, last_tag_token);
     } else if (raw_token.type === TOKEN.TEXT) {
       parser_token = this._handle_text(printer, raw_token, last_tag_token);
+    } else if (raw_token.type === TOKEN.CONTROL_FLOW_OPEN) {
+      parser_token = this._handle_control_flow_open(printer, raw_token);
+    } else if (raw_token.type === TOKEN.CONTROL_FLOW_CLOSE) {
+      parser_token = this._handle_control_flow_close(printer, raw_token);
     } else {
       // This should never happen, but if it does. Print the raw token
       printer.add_raw_token(raw_token);
@@ -7780,6 +7839,38 @@ Beautifier.prototype.beautify = function() {
   return sweet_code;
 };
 
+Beautifier.prototype._handle_control_flow_open = function(printer, raw_token) {
+  var parser_token = {
+    text: raw_token.text,
+    type: raw_token.type
+  };
+  printer.set_space_before_token(raw_token.newlines || raw_token.whitespace_before !== '', true);
+  if (raw_token.newlines) {
+    printer.print_preserved_newlines(raw_token);
+  } else {
+    printer.set_space_before_token(raw_token.newlines || raw_token.whitespace_before !== '', true);
+  }
+  printer.print_token(raw_token);
+  printer.indent();
+  return parser_token;
+};
+
+Beautifier.prototype._handle_control_flow_close = function(printer, raw_token) {
+  var parser_token = {
+    text: raw_token.text,
+    type: raw_token.type
+  };
+
+  printer.deindent();
+  if (raw_token.newlines) {
+    printer.print_preserved_newlines(raw_token);
+  } else {
+    printer.set_space_before_token(raw_token.newlines || raw_token.whitespace_before !== '', true);
+  }
+  printer.print_token(raw_token);
+  return parser_token;
+};
+
 Beautifier.prototype._handle_tag_close = function(printer, raw_token, last_tag_token) {
   var parser_token = {
     text: raw_token.text,
@@ -7818,7 +7909,7 @@ Beautifier.prototype._handle_tag_close = function(printer, raw_token, last_tag_t
   return parser_token;
 };
 
-Beautifier.prototype._handle_inside_tag = function(printer, raw_token, last_tag_token, tokens) {
+Beautifier.prototype._handle_inside_tag = function(printer, raw_token, last_tag_token, last_token) {
   var wrapped = last_tag_token.has_wrapped_attrs;
   var parser_token = {
     text: raw_token.text,
@@ -7839,7 +7930,6 @@ Beautifier.prototype._handle_inside_tag = function(printer, raw_token, last_tag_
   } else {
     if (raw_token.type === TOKEN.ATTRIBUTE) {
       printer.set_space_before_token(true);
-      last_tag_token.attr_count += 1;
     } else if (raw_token.type === TOKEN.EQUALS) { //no space before =
       printer.set_space_before_token(false);
     } else if (raw_token.type === TOKEN.VALUE && raw_token.previous.type === TOKEN.EQUALS) { //no space before value
@@ -7852,29 +7942,15 @@ Beautifier.prototype._handle_inside_tag = function(printer, raw_token, last_tag_
         wrapped = wrapped || raw_token.newlines !== 0;
       }
 
-
-      if (this._is_wrap_attributes_force) {
-        var force_attr_wrap = last_tag_token.attr_count > 1;
-        if (this._is_wrap_attributes_force_expand_multiline && last_tag_token.attr_count === 1) {
-          var is_only_attribute = true;
-          var peek_index = 0;
-          var peek_token;
-          do {
-            peek_token = tokens.peek(peek_index);
-            if (peek_token.type === TOKEN.ATTRIBUTE) {
-              is_only_attribute = false;
-              break;
-            }
-            peek_index += 1;
-          } while (peek_index < 4 && peek_token.type !== TOKEN.EOF && peek_token.type !== TOKEN.TAG_CLOSE);
-
-          force_attr_wrap = !is_only_attribute;
-        }
-
-        if (force_attr_wrap) {
-          printer.print_newline(false);
-          wrapped = true;
-        }
+      // Wrap for 'force' options, and if the number of attributes is at least that specified in 'wrap_attributes_min_attrs':
+      // 1. always wrap the second and beyond attributes
+      // 2. wrap the first attribute only if 'force-expand-multiline' is specified
+      if (this._is_wrap_attributes_force &&
+        last_tag_token.attr_count >= this._options.wrap_attributes_min_attrs &&
+        (last_token.type !== TOKEN.TAG_OPEN || // ie. second attribute and beyond
+          this._is_wrap_attributes_force_expand_multiline)) {
+        printer.print_newline(false);
+        wrapped = true;
       }
     }
     printer.print_token(raw_token);
@@ -8003,12 +8079,12 @@ Beautifier.prototype._print_custom_beatifier_text = function(printer, raw_token,
   }
 };
 
-Beautifier.prototype._handle_tag_open = function(printer, raw_token, last_tag_token, last_token) {
+Beautifier.prototype._handle_tag_open = function(printer, raw_token, last_tag_token, last_token, tokens) {
   var parser_token = this._get_tag_open_token(raw_token);
 
   if ((last_tag_token.is_unformatted || last_tag_token.is_content_unformatted) &&
     !last_tag_token.is_empty_element &&
-    raw_token.type === TOKEN.TAG_OPEN && raw_token.text.indexOf('</') === 0) {
+    raw_token.type === TOKEN.TAG_OPEN && !parser_token.is_start_tag) {
     // End element tags for unformatted or content_unformatted elements
     // are printed raw to keep any newlines inside them exactly the same.
     printer.add_raw_token(raw_token);
@@ -8022,6 +8098,19 @@ Beautifier.prototype._handle_tag_open = function(printer, raw_token, last_tag_to
     printer.print_token(raw_token);
   }
 
+  // count the number of attributes
+  if (parser_token.is_start_tag && this._is_wrap_attributes_force) {
+    var peek_index = 0;
+    var peek_token;
+    do {
+      peek_token = tokens.peek(peek_index);
+      if (peek_token.type === TOKEN.ATTRIBUTE) {
+        parser_token.attr_count += 1;
+      }
+      peek_index += 1;
+    } while (peek_token.type !== TOKEN.EOF && peek_token.type !== TOKEN.TAG_CLOSE);
+  }
+
   //indent attributes an auto, forced, aligned or forced-align line-wrap
   if (this._is_wrap_attributes_force_aligned || this._is_wrap_attributes_aligned_multiple || this._is_wrap_attributes_preserve_aligned) {
     parser_token.alignment_size = raw_token.text.length + 1;
@@ -8119,7 +8208,7 @@ Beautifier.prototype._get_tag_open_token = function(raw_token) { //function to g
 
   parser_token.is_unformatted = !parser_token.tag_complete && in_array(parser_token.tag_check, this._options.unformatted);
   parser_token.is_content_unformatted = !parser_token.is_empty_element && in_array(parser_token.tag_check, this._options.content_unformatted);
-  parser_token.is_inline_element = in_array(parser_token.tag_name, this._options.inline) || parser_token.tag_name.includes("-") || parser_token.tag_start_char === '{';
+  parser_token.is_inline_element = in_array(parser_token.tag_name, this._options.inline) || (this._options.inline_custom_elements && parser_token.tag_name.includes("-")) || parser_token.tag_start_char === '{';
 
   return parser_token;
 };
@@ -8226,7 +8315,7 @@ Beautifier.prototype._calcluate_parent_multiline = function(printer, parser_toke
 };
 
 //To be used for <p> tag special case:
-var p_closers = ['address', 'article', 'aside', 'blockquote', 'details', 'div', 'dl', 'fieldset', 'figcaption', 'figure', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'header', 'hr', 'main', 'nav', 'ol', 'p', 'pre', 'section', 'table', 'ul'];
+var p_closers = ['address', 'article', 'aside', 'blockquote', 'details', 'div', 'dl', 'fieldset', 'figcaption', 'figure', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'header', 'hr', 'main', 'menu', 'nav', 'ol', 'p', 'pre', 'section', 'table', 'ul'];
 var p_parent_excludes = ['a', 'audio', 'del', 'ins', 'map', 'noscript', 'video'];
 
 Beautifier.prototype._do_optional_end_element = function(parser_token) {
@@ -8249,7 +8338,7 @@ Beautifier.prototype._do_optional_end_element = function(parser_token) {
 
   } else if (parser_token.tag_name === 'li') {
     // An li element’s end tag may be omitted if the li element is immediately followed by another li element or if there is no more content in the parent element.
-    result = result || this._tag_stack.try_pop('li', ['ol', 'ul']);
+    result = result || this._tag_stack.try_pop('li', ['ol', 'ul', 'menu']);
 
   } else if (parser_token.tag_name === 'dd' || parser_token.tag_name === 'dt') {
     // A dd element’s end tag may be omitted if the dd element is immediately followed by another dd element or a dt element, or if there is no more content in the parent element.
@@ -8388,6 +8477,7 @@ function Options(options) {
   this.indent_handlebars = this._get_boolean('indent_handlebars', true);
   this.wrap_attributes = this._get_selection('wrap_attributes',
     ['auto', 'force', 'force-aligned', 'force-expand-multiline', 'aligned-multiple', 'preserve', 'preserve-aligned']);
+  this.wrap_attributes_min_attrs = this._get_number('wrap_attributes_min_attrs', 2);
   this.wrap_attributes_indent_size = this._get_number('wrap_attributes_indent_size', this.indent_size);
   this.extra_liners = this._get_array('extra_liners', ['head', 'body', '/html']);
 
@@ -8405,6 +8495,7 @@ function Options(options) {
     // obsolete inline tags
     'acronym', 'big', 'strike', 'tt'
   ]);
+  this.inline_custom_elements = this._get_boolean('inline_custom_elements', true);
   this.void_elements = this._get_array('void_elements', [
     // HTLM void elements - aka self-closing tags - aka singletons
     // https://www.w3.org/html/wg/drafts/html/master/syntax.html#void-elements
@@ -8479,6 +8570,8 @@ var Pattern = (__webpack_require__(12).Pattern);
 var TOKEN = {
   TAG_OPEN: 'TK_TAG_OPEN',
   TAG_CLOSE: 'TK_TAG_CLOSE',
+  CONTROL_FLOW_OPEN: 'TK_CONTROL_FLOW_OPEN',
+  CONTROL_FLOW_CLOSE: 'TK_CONTROL_FLOW_CLOSE',
   ATTRIBUTE: 'TK_ATTRIBUTE',
   EQUALS: 'TK_EQUALS',
   VALUE: 'TK_VALUE',
@@ -8503,11 +8596,13 @@ var Tokenizer = function(input_string, options) {
 
   this.__patterns = {
     word: templatable_reader.until(/[\n\r\t <]/),
+    word_control_flow_close_excluded: templatable_reader.until(/[\n\r\t <}]/),
     single_quote: templatable_reader.until_after(/'/),
     double_quote: templatable_reader.until_after(/"/),
     attribute: templatable_reader.until(/[\n\r\t =>]|\/>/),
     element_name: templatable_reader.until(/[\n\r\t >\/]/),
 
+    angular_control_flow_start: pattern_reader.matching(/\@[a-zA-Z]+[^({]*[({]/),
     handlebars_comment: pattern_reader.starting_with(/{{!--/).until_after(/--}}/),
     handlebars: pattern_reader.starting_with(/{{/).until_after(/}}/),
     handlebars_open: pattern_reader.until(/[\n\r\t }]/),
@@ -8521,6 +8616,7 @@ var Tokenizer = function(input_string, options) {
 
   if (this._options.indent_handlebars) {
     this.__patterns.word = this.__patterns.word.exclude('handlebars');
+    this.__patterns.word_control_flow_close_excluded = this.__patterns.word_control_flow_close_excluded.exclude('handlebars');
   }
 
   this._unformatted_content_delimiter = null;
@@ -8539,14 +8635,16 @@ Tokenizer.prototype._is_comment = function(current_token) { // jshint unused:fal
 };
 
 Tokenizer.prototype._is_opening = function(current_token) {
-  return current_token.type === TOKEN.TAG_OPEN;
+  return current_token.type === TOKEN.TAG_OPEN || current_token.type === TOKEN.CONTROL_FLOW_OPEN;
 };
 
 Tokenizer.prototype._is_closing = function(current_token, open_token) {
-  return current_token.type === TOKEN.TAG_CLOSE &&
+  return (current_token.type === TOKEN.TAG_CLOSE &&
     (open_token && (
       ((current_token.text === '>' || current_token.text === '/>') && open_token.text[0] === '<') ||
-      (current_token.text === '}}' && open_token.text[0] === '{' && open_token.text[1] === '{')));
+      (current_token.text === '}}' && open_token.text[0] === '{' && open_token.text[1] === '{')))
+  ) || (current_token.type === TOKEN.CONTROL_FLOW_CLOSE &&
+    (current_token.text === '}' && open_token.text.endsWith('{')));
 };
 
 Tokenizer.prototype._reset = function() {
@@ -8565,8 +8663,9 @@ Tokenizer.prototype._get_next_token = function(previous_token, open_token) { //
   token = token || this._read_open_handlebars(c, open_token);
   token = token || this._read_attribute(c, previous_token, open_token);
   token = token || this._read_close(c, open_token);
+  token = token || this._read_control_flows(c, open_token);
   token = token || this._read_raw_content(c, previous_token, open_token);
-  token = token || this._read_content_word(c);
+  token = token || this._read_content_word(c, open_token);
   token = token || this._read_comment_or_cdata(c);
   token = token || this._read_processing(c);
   token = token || this._read_open(c, open_token);
@@ -8631,7 +8730,7 @@ Tokenizer.prototype._read_processing = function(c) { // jshint unused:false
 Tokenizer.prototype._read_open = function(c, open_token) {
   var resulting_string = null;
   var token = null;
-  if (!open_token) {
+  if (!open_token || open_token.type === TOKEN.CONTROL_FLOW_OPEN) {
     if (c === '<') {
 
       resulting_string = this._input.next();
@@ -8648,7 +8747,7 @@ Tokenizer.prototype._read_open = function(c, open_token) {
 Tokenizer.prototype._read_open_handlebars = function(c, open_token) {
   var resulting_string = null;
   var token = null;
-  if (!open_token) {
+  if (!open_token || open_token.type === TOKEN.CONTROL_FLOW_OPEN) {
     if (this._options.indent_handlebars && c === '{' && this._input.peek(1) === '{') {
       if (this._input.peek(2) === '!') {
         resulting_string = this.__patterns.handlebars_comment.read();
@@ -8663,11 +8762,48 @@ Tokenizer.prototype._read_open_handlebars = function(c, open_token) {
   return token;
 };
 
+Tokenizer.prototype._read_control_flows = function(c, open_token) {
+  var resulting_string = '';
+  var token = null;
+  // Only check for control flows if angular templating is set AND indenting is set
+  if (!this._options.templating.includes('angular') || !this._options.indent_handlebars) {
+    return token;
+  }
+
+  if (c === '@') {
+    resulting_string = this.__patterns.angular_control_flow_start.read();
+    if (resulting_string === '') {
+      return token;
+    }
+
+    var opening_parentheses_count = resulting_string.endsWith('(') ? 1 : 0;
+    var closing_parentheses_count = 0;
+    // The opening brace of the control flow is where the number of opening and closing parentheses equal
+    // e.g. @if({value: true} !== null) { 
+    while (!(resulting_string.endsWith('{') && opening_parentheses_count === closing_parentheses_count)) {
+      var next_char = this._input.next();
+      if (next_char === null) {
+        break;
+      } else if (next_char === '(') {
+        opening_parentheses_count++;
+      } else if (next_char === ')') {
+        closing_parentheses_count++;
+      }
+      resulting_string += next_char;
+    }
+    token = this._create_token(TOKEN.CONTROL_FLOW_OPEN, resulting_string);
+  } else if (c === '}' && open_token && open_token.type === TOKEN.CONTROL_FLOW_OPEN) {
+    resulting_string = this._input.next();
+    token = this._create_token(TOKEN.CONTROL_FLOW_CLOSE, resulting_string);
+  }
+  return token;
+};
+
 
 Tokenizer.prototype._read_close = function(c, open_token) {
   var resulting_string = null;
   var token = null;
-  if (open_token) {
+  if (open_token && open_token.type === TOKEN.TAG_OPEN) {
     if (open_token.text[0] === '<' && (c === '>' || (c === '/' && this._input.peek(1) === '>'))) {
       resulting_string = this._input.next();
       if (c === '/') { //  for close tag "/>"
@@ -8754,7 +8890,7 @@ Tokenizer.prototype._read_raw_content = function(c, previous_token, open_token)
   return null;
 };
 
-Tokenizer.prototype._read_content_word = function(c) {
+Tokenizer.prototype._read_content_word = function(c, open_token) {
   var resulting_string = '';
   if (this._options.unformatted_content_delimiter) {
     if (c === this._options.unformatted_content_delimiter[0]) {
@@ -8763,7 +8899,7 @@ Tokenizer.prototype._read_content_word = function(c) {
   }
 
   if (!resulting_string) {
-    resulting_string = this.__patterns.word.read();
+    resulting_string = (open_token && open_token.type === TOKEN.CONTROL_FLOW_OPEN) ? this.__patterns.word_control_flow_close_excluded.read() : this.__patterns.word.read();
   }
   if (resulting_string) {
     return this._create_token(TOKEN.TEXT, resulting_string);
diff --git a/lib/editor/atto/plugins/html/yui/src/beautify/js/beautify-css.js b/lib/editor/atto/plugins/html/yui/src/beautify/js/beautify-css.js
index aa7d008bd8a4..36bc68577a63 100644
--- a/lib/editor/atto/plugins/html/yui/src/beautify/js/beautify-css.js
+++ b/lib/editor/atto/plugins/html/yui/src/beautify/js/beautify-css.js
@@ -571,10 +571,10 @@ function Options(options, merge_child_field) {
 
   this.indent_empty_lines = this._get_boolean('indent_empty_lines');
 
-  // valid templating languages ['django', 'erb', 'handlebars', 'php', 'smarty']
-  // For now, 'auto' = all off for javascript, all on for html (and inline javascript).
+  // valid templating languages ['django', 'erb', 'handlebars', 'php', 'smarty', 'angular']
+  // For now, 'auto' = all off for javascript, all except angular on for html (and inline javascript/css).
   // other values ignored
-  this.templating = this._get_selection_list('templating', ['auto', 'none', 'django', 'erb', 'handlebars', 'php', 'smarty'], ['auto']);
+  this.templating = this._get_selection_list('templating', ['auto', 'none', 'angular', 'django', 'erb', 'handlebars', 'php', 'smarty'], ['auto']);
 }
 
 Options.prototype._get_array = function(name, default_value) {
@@ -1077,18 +1077,18 @@ function Beautifier(source_text, options) {
 
   // https://developer.mozilla.org/en-US/docs/Web/CSS/At-rule
   this.NESTED_AT_RULE = {
-    "@page": true,
-    "@font-face": true,
-    "@keyframes": true,
+    "page": true,
+    "font-face": true,
+    "keyframes": true,
     // also in CONDITIONAL_GROUP_RULE below
-    "@media": true,
-    "@supports": true,
-    "@document": true
+    "media": true,
+    "supports": true,
+    "document": true
   };
   this.CONDITIONAL_GROUP_RULE = {
-    "@media": true,
-    "@supports": true,
-    "@document": true
+    "media": true,
+    "supports": true,
+    "document": true
   };
   this.NON_SEMICOLON_NEWLINE_PROPERTY = [
     "grid-template-areas",
@@ -1216,8 +1216,7 @@ Beautifier.prototype.beautify = function() {
   // label { content: blue }
   var insidePropertyValue = false;
   var enteringConditionalGroup = false;
-  var insideAtExtend = false;
-  var insideAtImport = false;
+  var insideNonNestedAtRule = false;
   var insideScssMap = false;
   var topCharacter = this._ch;
   var insideNonSemiColonValues = false;
@@ -1272,10 +1271,30 @@ Beautifier.prototype.beautify = function() {
 
       // Ensures any new lines following the comment are preserved
       this.eatWhitespace(true);
-    } else if (this._ch === '@' || this._ch === '$') {
+    } else if (this._ch === '$') {
       this.preserveSingleSpace(isAfterSpace);
 
-      // deal with less propery mixins @{...}
+      this.print_string(this._ch);
+
+      // strip trailing space, if present, for hash property checks
+      var variable = this._input.peekUntilAfter(/[: ,;{}()[\]\/='"]/g);
+
+      if (variable.match(/[ :]$/)) {
+        // we have a variable or pseudo-class, add it and insert one space before continuing
+        variable = this.eatString(": ").replace(/\s+$/, '');
+        this.print_string(variable);
+        this._output.space_before_token = true;
+      }
+
+      // might be sass variable
+      if (parenLevel === 0 && variable.indexOf(':') !== -1) {
+        insidePropertyValue = true;
+        this.indent();
+      }
+    } else if (this._ch === '@') {
+      this.preserveSingleSpace(isAfterSpace);
+
+      // deal with less property mixins @{...}
       if (this._input.peek() === '{') {
         this.print_string(this._ch + this.eatString('}'));
       } else {
@@ -1286,29 +1305,26 @@ Beautifier.prototype.beautify = function() {
 
         if (variableOrRule.match(/[ :]$/)) {
           // we have a variable or pseudo-class, add it and insert one space before continuing
-          variableOrRule = this.eatString(": ").replace(/\s$/, '');
+          variableOrRule = this.eatString(": ").replace(/\s+$/, '');
           this.print_string(variableOrRule);
           this._output.space_before_token = true;
         }
 
-        variableOrRule = variableOrRule.replace(/\s$/, '');
-
-        if (variableOrRule === 'extend') {
-          insideAtExtend = true;
-        } else if (variableOrRule === 'import') {
-          insideAtImport = true;
-        }
+        // might be less variable
+        if (parenLevel === 0 && variableOrRule.indexOf(':') !== -1) {
+          insidePropertyValue = true;
+          this.indent();
 
-        // might be a nesting at-rule
-        if (variableOrRule in this.NESTED_AT_RULE) {
+          // might be a nesting at-rule
+        } else if (variableOrRule in this.NESTED_AT_RULE) {
           this._nestedLevel += 1;
           if (variableOrRule in this.CONDITIONAL_GROUP_RULE) {
             enteringConditionalGroup = true;
           }
-          // might be less variable
-        } else if (!insideRule && parenLevel === 0 && variableOrRule.indexOf(':') !== -1) {
-          insidePropertyValue = true;
-          this.indent();
+
+          // might be a non-nested at-rule
+        } else if (parenLevel === 0 && !insidePropertyValue) {
+          insideNonNestedAtRule = true;
         }
       }
     } else if (this._ch === '#' && this._input.peek() === '{') {
@@ -1320,6 +1336,9 @@ Beautifier.prototype.beautify = function() {
         this.outdent();
       }
 
+      // non nested at rule becomes nested
+      insideNonNestedAtRule = false;
+
       // when entering conditional groups, only rulesets are allowed
       if (enteringConditionalGroup) {
         enteringConditionalGroup = false;
@@ -1360,8 +1379,7 @@ Beautifier.prototype.beautify = function() {
       if (previous_ch === '{') {
         this._output.trim(true);
       }
-      insideAtImport = false;
-      insideAtExtend = false;
+
       if (insidePropertyValue) {
         this.outdent();
         insidePropertyValue = false;
@@ -1395,9 +1413,10 @@ Beautifier.prototype.beautify = function() {
         }
       }
 
-      if ((insideRule || enteringConditionalGroup) && !(this._input.lookBack("&") || this.foundNestedPseudoClass()) && !this._input.lookBack("(") && !insideAtExtend && parenLevel === 0) {
+      if ((insideRule || enteringConditionalGroup) && !(this._input.lookBack("&") || this.foundNestedPseudoClass()) && !this._input.lookBack("(") && !insideNonNestedAtRule && parenLevel === 0) {
         // 'property: value' delimiter
         // which could be in a conditional group query
+
         this.print_string(':');
         if (!insidePropertyValue) {
           insidePropertyValue = true;
@@ -1434,8 +1453,7 @@ Beautifier.prototype.beautify = function() {
           this.outdent();
           insidePropertyValue = false;
         }
-        insideAtExtend = false;
-        insideAtImport = false;
+        insideNonNestedAtRule = false;
         this.print_string(this._ch);
         this.eatWhitespace(true);
 
@@ -1500,7 +1518,7 @@ Beautifier.prototype.beautify = function() {
     } else if (this._ch === ',') {
       this.print_string(this._ch);
       this.eatWhitespace(true);
-      if (this._options.selector_separator_newline && (!insidePropertyValue || insideScssMap) && parenLevel === 0 && !insideAtImport && !insideAtExtend) {
+      if (this._options.selector_separator_newline && (!insidePropertyValue || insideScssMap) && parenLevel === 0 && !insideNonNestedAtRule) {
         this._output.add_new_line();
       } else {
         this._output.space_before_token = true;
diff --git a/lib/editor/atto/plugins/html/yui/src/beautify/js/beautify-html.js b/lib/editor/atto/plugins/html/yui/src/beautify/js/beautify-html.js
index ff60dace527c..48fa73716ab9 100644
--- a/lib/editor/atto/plugins/html/yui/src/beautify/js/beautify-html.js
+++ b/lib/editor/atto/plugins/html/yui/src/beautify/js/beautify-html.js
@@ -640,10 +640,10 @@ function Options(options, merge_child_field) {
 
   this.indent_empty_lines = this._get_boolean('indent_empty_lines');
 
-  // valid templating languages ['django', 'erb', 'handlebars', 'php', 'smarty']
-  // For now, 'auto' = all off for javascript, all on for html (and inline javascript).
+  // valid templating languages ['django', 'erb', 'handlebars', 'php', 'smarty', 'angular']
+  // For now, 'auto' = all off for javascript, all except angular on for html (and inline javascript/css).
   // other values ignored
-  this.templating = this._get_selection_list('templating', ['auto', 'none', 'django', 'erb', 'handlebars', 'php', 'smarty'], ['auto']);
+  this.templating = this._get_selection_list('templating', ['auto', 'none', 'angular', 'django', 'erb', 'handlebars', 'php', 'smarty'], ['auto']);
 }
 
 Options.prototype._get_array = function(name, default_value) {
@@ -1516,7 +1516,8 @@ var template_names = {
   erb: false,
   handlebars: false,
   php: false,
-  smarty: false
+  smarty: false,
+  angular: false
 };
 
 // This lets templates appear anywhere we would do a readUntil
@@ -1859,6 +1860,13 @@ Printer.prototype.indent = function() {
   this.indent_level++;
 };
 
+Printer.prototype.deindent = function() {
+  if (this.indent_level > 0) {
+    this.indent_level--;
+    this._output.set_indent(this.indent_level, this.alignment_size);
+  }
+};
+
 Printer.prototype.get_full_indent = function(level) {
   level = this.indent_level + (level || 0);
   if (level < 1) {
@@ -2044,15 +2052,19 @@ Beautifier.prototype.beautify = function() {
   while (raw_token.type !== TOKEN.EOF) {
 
     if (raw_token.type === TOKEN.TAG_OPEN || raw_token.type === TOKEN.COMMENT) {
-      parser_token = this._handle_tag_open(printer, raw_token, last_tag_token, last_token);
+      parser_token = this._handle_tag_open(printer, raw_token, last_tag_token, last_token, tokens);
       last_tag_token = parser_token;
     } else if ((raw_token.type === TOKEN.ATTRIBUTE || raw_token.type === TOKEN.EQUALS || raw_token.type === TOKEN.VALUE) ||
       (raw_token.type === TOKEN.TEXT && !last_tag_token.tag_complete)) {
-      parser_token = this._handle_inside_tag(printer, raw_token, last_tag_token, tokens);
+      parser_token = this._handle_inside_tag(printer, raw_token, last_tag_token, last_token);
     } else if (raw_token.type === TOKEN.TAG_CLOSE) {
       parser_token = this._handle_tag_close(printer, raw_token, last_tag_token);
     } else if (raw_token.type === TOKEN.TEXT) {
       parser_token = this._handle_text(printer, raw_token, last_tag_token);
+    } else if (raw_token.type === TOKEN.CONTROL_FLOW_OPEN) {
+      parser_token = this._handle_control_flow_open(printer, raw_token);
+    } else if (raw_token.type === TOKEN.CONTROL_FLOW_CLOSE) {
+      parser_token = this._handle_control_flow_close(printer, raw_token);
     } else {
       // This should never happen, but if it does. Print the raw token
       printer.add_raw_token(raw_token);
@@ -2067,6 +2079,38 @@ Beautifier.prototype.beautify = function() {
   return sweet_code;
 };
 
+Beautifier.prototype._handle_control_flow_open = function(printer, raw_token) {
+  var parser_token = {
+    text: raw_token.text,
+    type: raw_token.type
+  };
+  printer.set_space_before_token(raw_token.newlines || raw_token.whitespace_before !== '', true);
+  if (raw_token.newlines) {
+    printer.print_preserved_newlines(raw_token);
+  } else {
+    printer.set_space_before_token(raw_token.newlines || raw_token.whitespace_before !== '', true);
+  }
+  printer.print_token(raw_token);
+  printer.indent();
+  return parser_token;
+};
+
+Beautifier.prototype._handle_control_flow_close = function(printer, raw_token) {
+  var parser_token = {
+    text: raw_token.text,
+    type: raw_token.type
+  };
+
+  printer.deindent();
+  if (raw_token.newlines) {
+    printer.print_preserved_newlines(raw_token);
+  } else {
+    printer.set_space_before_token(raw_token.newlines || raw_token.whitespace_before !== '', true);
+  }
+  printer.print_token(raw_token);
+  return parser_token;
+};
+
 Beautifier.prototype._handle_tag_close = function(printer, raw_token, last_tag_token) {
   var parser_token = {
     text: raw_token.text,
@@ -2105,7 +2149,7 @@ Beautifier.prototype._handle_tag_close = function(printer, raw_token, last_tag_t
   return parser_token;
 };
 
-Beautifier.prototype._handle_inside_tag = function(printer, raw_token, last_tag_token, tokens) {
+Beautifier.prototype._handle_inside_tag = function(printer, raw_token, last_tag_token, last_token) {
   var wrapped = last_tag_token.has_wrapped_attrs;
   var parser_token = {
     text: raw_token.text,
@@ -2126,7 +2170,6 @@ Beautifier.prototype._handle_inside_tag = function(printer, raw_token, last_tag_
   } else {
     if (raw_token.type === TOKEN.ATTRIBUTE) {
       printer.set_space_before_token(true);
-      last_tag_token.attr_count += 1;
     } else if (raw_token.type === TOKEN.EQUALS) { //no space before =
       printer.set_space_before_token(false);
     } else if (raw_token.type === TOKEN.VALUE && raw_token.previous.type === TOKEN.EQUALS) { //no space before value
@@ -2139,29 +2182,15 @@ Beautifier.prototype._handle_inside_tag = function(printer, raw_token, last_tag_
         wrapped = wrapped || raw_token.newlines !== 0;
       }
 
-
-      if (this._is_wrap_attributes_force) {
-        var force_attr_wrap = last_tag_token.attr_count > 1;
-        if (this._is_wrap_attributes_force_expand_multiline && last_tag_token.attr_count === 1) {
-          var is_only_attribute = true;
-          var peek_index = 0;
-          var peek_token;
-          do {
-            peek_token = tokens.peek(peek_index);
-            if (peek_token.type === TOKEN.ATTRIBUTE) {
-              is_only_attribute = false;
-              break;
-            }
-            peek_index += 1;
-          } while (peek_index < 4 && peek_token.type !== TOKEN.EOF && peek_token.type !== TOKEN.TAG_CLOSE);
-
-          force_attr_wrap = !is_only_attribute;
-        }
-
-        if (force_attr_wrap) {
-          printer.print_newline(false);
-          wrapped = true;
-        }
+      // Wrap for 'force' options, and if the number of attributes is at least that specified in 'wrap_attributes_min_attrs':
+      // 1. always wrap the second and beyond attributes
+      // 2. wrap the first attribute only if 'force-expand-multiline' is specified
+      if (this._is_wrap_attributes_force &&
+        last_tag_token.attr_count >= this._options.wrap_attributes_min_attrs &&
+        (last_token.type !== TOKEN.TAG_OPEN || // ie. second attribute and beyond
+          this._is_wrap_attributes_force_expand_multiline)) {
+        printer.print_newline(false);
+        wrapped = true;
       }
     }
     printer.print_token(raw_token);
@@ -2290,12 +2319,12 @@ Beautifier.prototype._print_custom_beatifier_text = function(printer, raw_token,
   }
 };
 
-Beautifier.prototype._handle_tag_open = function(printer, raw_token, last_tag_token, last_token) {
+Beautifier.prototype._handle_tag_open = function(printer, raw_token, last_tag_token, last_token, tokens) {
   var parser_token = this._get_tag_open_token(raw_token);
 
   if ((last_tag_token.is_unformatted || last_tag_token.is_content_unformatted) &&
     !last_tag_token.is_empty_element &&
-    raw_token.type === TOKEN.TAG_OPEN && raw_token.text.indexOf('</') === 0) {
+    raw_token.type === TOKEN.TAG_OPEN && !parser_token.is_start_tag) {
     // End element tags for unformatted or content_unformatted elements
     // are printed raw to keep any newlines inside them exactly the same.
     printer.add_raw_token(raw_token);
@@ -2309,6 +2338,19 @@ Beautifier.prototype._handle_tag_open = function(printer, raw_token, last_tag_to
     printer.print_token(raw_token);
   }
 
+  // count the number of attributes
+  if (parser_token.is_start_tag && this._is_wrap_attributes_force) {
+    var peek_index = 0;
+    var peek_token;
+    do {
+      peek_token = tokens.peek(peek_index);
+      if (peek_token.type === TOKEN.ATTRIBUTE) {
+        parser_token.attr_count += 1;
+      }
+      peek_index += 1;
+    } while (peek_token.type !== TOKEN.EOF && peek_token.type !== TOKEN.TAG_CLOSE);
+  }
+
   //indent attributes an auto, forced, aligned or forced-align line-wrap
   if (this._is_wrap_attributes_force_aligned || this._is_wrap_attributes_aligned_multiple || this._is_wrap_attributes_preserve_aligned) {
     parser_token.alignment_size = raw_token.text.length + 1;
@@ -2406,7 +2448,7 @@ Beautifier.prototype._get_tag_open_token = function(raw_token) { //function to g
 
   parser_token.is_unformatted = !parser_token.tag_complete && in_array(parser_token.tag_check, this._options.unformatted);
   parser_token.is_content_unformatted = !parser_token.is_empty_element && in_array(parser_token.tag_check, this._options.content_unformatted);
-  parser_token.is_inline_element = in_array(parser_token.tag_name, this._options.inline) || parser_token.tag_name.includes("-") || parser_token.tag_start_char === '{';
+  parser_token.is_inline_element = in_array(parser_token.tag_name, this._options.inline) || (this._options.inline_custom_elements && parser_token.tag_name.includes("-")) || parser_token.tag_start_char === '{';
 
   return parser_token;
 };
@@ -2513,7 +2555,7 @@ Beautifier.prototype._calcluate_parent_multiline = function(printer, parser_toke
 };
 
 //To be used for <p> tag special case:
-var p_closers = ['address', 'article', 'aside', 'blockquote', 'details', 'div', 'dl', 'fieldset', 'figcaption', 'figure', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'header', 'hr', 'main', 'nav', 'ol', 'p', 'pre', 'section', 'table', 'ul'];
+var p_closers = ['address', 'article', 'aside', 'blockquote', 'details', 'div', 'dl', 'fieldset', 'figcaption', 'figure', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'header', 'hr', 'main', 'menu', 'nav', 'ol', 'p', 'pre', 'section', 'table', 'ul'];
 var p_parent_excludes = ['a', 'audio', 'del', 'ins', 'map', 'noscript', 'video'];
 
 Beautifier.prototype._do_optional_end_element = function(parser_token) {
@@ -2536,7 +2578,7 @@ Beautifier.prototype._do_optional_end_element = function(parser_token) {
 
   } else if (parser_token.tag_name === 'li') {
     // An li element’s end tag may be omitted if the li element is immediately followed by another li element or if there is no more content in the parent element.
-    result = result || this._tag_stack.try_pop('li', ['ol', 'ul']);
+    result = result || this._tag_stack.try_pop('li', ['ol', 'ul', 'menu']);
 
   } else if (parser_token.tag_name === 'dd' || parser_token.tag_name === 'dt') {
     // A dd element’s end tag may be omitted if the dd element is immediately followed by another dd element or a dt element, or if there is no more content in the parent element.
@@ -2675,6 +2717,7 @@ function Options(options) {
   this.indent_handlebars = this._get_boolean('indent_handlebars', true);
   this.wrap_attributes = this._get_selection('wrap_attributes',
     ['auto', 'force', 'force-aligned', 'force-expand-multiline', 'aligned-multiple', 'preserve', 'preserve-aligned']);
+  this.wrap_attributes_min_attrs = this._get_number('wrap_attributes_min_attrs', 2);
   this.wrap_attributes_indent_size = this._get_number('wrap_attributes_indent_size', this.indent_size);
   this.extra_liners = this._get_array('extra_liners', ['head', 'body', '/html']);
 
@@ -2692,6 +2735,7 @@ function Options(options) {
     // obsolete inline tags
     'acronym', 'big', 'strike', 'tt'
   ]);
+  this.inline_custom_elements = this._get_boolean('inline_custom_elements', true);
   this.void_elements = this._get_array('void_elements', [
     // HTLM void elements - aka self-closing tags - aka singletons
     // https://www.w3.org/html/wg/drafts/html/master/syntax.html#void-elements
@@ -2766,6 +2810,8 @@ var Pattern = (__webpack_require__(12).Pattern);
 var TOKEN = {
   TAG_OPEN: 'TK_TAG_OPEN',
   TAG_CLOSE: 'TK_TAG_CLOSE',
+  CONTROL_FLOW_OPEN: 'TK_CONTROL_FLOW_OPEN',
+  CONTROL_FLOW_CLOSE: 'TK_CONTROL_FLOW_CLOSE',
   ATTRIBUTE: 'TK_ATTRIBUTE',
   EQUALS: 'TK_EQUALS',
   VALUE: 'TK_VALUE',
@@ -2790,11 +2836,13 @@ var Tokenizer = function(input_string, options) {
 
   this.__patterns = {
     word: templatable_reader.until(/[\n\r\t <]/),
+    word_control_flow_close_excluded: templatable_reader.until(/[\n\r\t <}]/),
     single_quote: templatable_reader.until_after(/'/),
     double_quote: templatable_reader.until_after(/"/),
     attribute: templatable_reader.until(/[\n\r\t =>]|\/>/),
     element_name: templatable_reader.until(/[\n\r\t >\/]/),
 
+    angular_control_flow_start: pattern_reader.matching(/\@[a-zA-Z]+[^({]*[({]/),
     handlebars_comment: pattern_reader.starting_with(/{{!--/).until_after(/--}}/),
     handlebars: pattern_reader.starting_with(/{{/).until_after(/}}/),
     handlebars_open: pattern_reader.until(/[\n\r\t }]/),
@@ -2808,6 +2856,7 @@ var Tokenizer = function(input_string, options) {
 
   if (this._options.indent_handlebars) {
     this.__patterns.word = this.__patterns.word.exclude('handlebars');
+    this.__patterns.word_control_flow_close_excluded = this.__patterns.word_control_flow_close_excluded.exclude('handlebars');
   }
 
   this._unformatted_content_delimiter = null;
@@ -2826,14 +2875,16 @@ Tokenizer.prototype._is_comment = function(current_token) { // jshint unused:fal
 };
 
 Tokenizer.prototype._is_opening = function(current_token) {
-  return current_token.type === TOKEN.TAG_OPEN;
+  return current_token.type === TOKEN.TAG_OPEN || current_token.type === TOKEN.CONTROL_FLOW_OPEN;
 };
 
 Tokenizer.prototype._is_closing = function(current_token, open_token) {
-  return current_token.type === TOKEN.TAG_CLOSE &&
+  return (current_token.type === TOKEN.TAG_CLOSE &&
     (open_token && (
       ((current_token.text === '>' || current_token.text === '/>') && open_token.text[0] === '<') ||
-      (current_token.text === '}}' && open_token.text[0] === '{' && open_token.text[1] === '{')));
+      (current_token.text === '}}' && open_token.text[0] === '{' && open_token.text[1] === '{')))
+  ) || (current_token.type === TOKEN.CONTROL_FLOW_CLOSE &&
+    (current_token.text === '}' && open_token.text.endsWith('{')));
 };
 
 Tokenizer.prototype._reset = function() {
@@ -2852,8 +2903,9 @@ Tokenizer.prototype._get_next_token = function(previous_token, open_token) { //
   token = token || this._read_open_handlebars(c, open_token);
   token = token || this._read_attribute(c, previous_token, open_token);
   token = token || this._read_close(c, open_token);
+  token = token || this._read_control_flows(c, open_token);
   token = token || this._read_raw_content(c, previous_token, open_token);
-  token = token || this._read_content_word(c);
+  token = token || this._read_content_word(c, open_token);
   token = token || this._read_comment_or_cdata(c);
   token = token || this._read_processing(c);
   token = token || this._read_open(c, open_token);
@@ -2918,7 +2970,7 @@ Tokenizer.prototype._read_processing = function(c) { // jshint unused:false
 Tokenizer.prototype._read_open = function(c, open_token) {
   var resulting_string = null;
   var token = null;
-  if (!open_token) {
+  if (!open_token || open_token.type === TOKEN.CONTROL_FLOW_OPEN) {
     if (c === '<') {
 
       resulting_string = this._input.next();
@@ -2935,7 +2987,7 @@ Tokenizer.prototype._read_open = function(c, open_token) {
 Tokenizer.prototype._read_open_handlebars = function(c, open_token) {
   var resulting_string = null;
   var token = null;
-  if (!open_token) {
+  if (!open_token || open_token.type === TOKEN.CONTROL_FLOW_OPEN) {
     if (this._options.indent_handlebars && c === '{' && this._input.peek(1) === '{') {
       if (this._input.peek(2) === '!') {
         resulting_string = this.__patterns.handlebars_comment.read();
@@ -2950,11 +3002,48 @@ Tokenizer.prototype._read_open_handlebars = function(c, open_token) {
   return token;
 };
 
+Tokenizer.prototype._read_control_flows = function(c, open_token) {
+  var resulting_string = '';
+  var token = null;
+  // Only check for control flows if angular templating is set AND indenting is set
+  if (!this._options.templating.includes('angular') || !this._options.indent_handlebars) {
+    return token;
+  }
+
+  if (c === '@') {
+    resulting_string = this.__patterns.angular_control_flow_start.read();
+    if (resulting_string === '') {
+      return token;
+    }
+
+    var opening_parentheses_count = resulting_string.endsWith('(') ? 1 : 0;
+    var closing_parentheses_count = 0;
+    // The opening brace of the control flow is where the number of opening and closing parentheses equal
+    // e.g. @if({value: true} !== null) { 
+    while (!(resulting_string.endsWith('{') && opening_parentheses_count === closing_parentheses_count)) {
+      var next_char = this._input.next();
+      if (next_char === null) {
+        break;
+      } else if (next_char === '(') {
+        opening_parentheses_count++;
+      } else if (next_char === ')') {
+        closing_parentheses_count++;
+      }
+      resulting_string += next_char;
+    }
+    token = this._create_token(TOKEN.CONTROL_FLOW_OPEN, resulting_string);
+  } else if (c === '}' && open_token && open_token.type === TOKEN.CONTROL_FLOW_OPEN) {
+    resulting_string = this._input.next();
+    token = this._create_token(TOKEN.CONTROL_FLOW_CLOSE, resulting_string);
+  }
+  return token;
+};
+
 
 Tokenizer.prototype._read_close = function(c, open_token) {
   var resulting_string = null;
   var token = null;
-  if (open_token) {
+  if (open_token && open_token.type === TOKEN.TAG_OPEN) {
     if (open_token.text[0] === '<' && (c === '>' || (c === '/' && this._input.peek(1) === '>'))) {
       resulting_string = this._input.next();
       if (c === '/') { //  for close tag "/>"
@@ -3041,7 +3130,7 @@ Tokenizer.prototype._read_raw_content = function(c, previous_token, open_token)
   return null;
 };
 
-Tokenizer.prototype._read_content_word = function(c) {
+Tokenizer.prototype._read_content_word = function(c, open_token) {
   var resulting_string = '';
   if (this._options.unformatted_content_delimiter) {
     if (c === this._options.unformatted_content_delimiter[0]) {
@@ -3050,7 +3139,7 @@ Tokenizer.prototype._read_content_word = function(c) {
   }
 
   if (!resulting_string) {
-    resulting_string = this.__patterns.word.read();
+    resulting_string = (open_token && open_token.type === TOKEN.CONTROL_FLOW_OPEN) ? this.__patterns.word_control_flow_close_excluded.read() : this.__patterns.word.read();
   }
   if (resulting_string) {
     return this._create_token(TOKEN.TEXT, resulting_string);
diff --git a/lib/editor/atto/plugins/html/yui/src/beautify/js/beautify.js b/lib/editor/atto/plugins/html/yui/src/beautify/js/beautify.js
index d02605dca719..377364038124 100644
--- a/lib/editor/atto/plugins/html/yui/src/beautify/js/beautify.js
+++ b/lib/editor/atto/plugins/html/yui/src/beautify/js/beautify.js
@@ -59,7 +59,7 @@
             }                   }
 
     space_after_anon_function (default false) - should the space before an anonymous function's parens be added, "function()" vs "function ()",
-          NOTE: This option is overriden by jslint_happy (i.e. if jslint_happy is true, space_after_anon_function is true by design)
+          NOTE: This option is overridden by jslint_happy (i.e. if jslint_happy is true, space_after_anon_function is true by design)
 
     brace_style (default "collapse") - "collapse" | "expand" | "end-expand" | "none" | any of the former + ",preserve-inline"
             put braces on the same line as control statements (default), or put braces on own line (Allman / ANSI style), or just put end braces on own line, or attempt to keep them where they are.
@@ -910,7 +910,7 @@ Beautifier.prototype.handle_start_block = function(current_token) {
       }
     }
     if (this._flags.last_token.type !== TOKEN.OPERATOR && this._flags.last_token.type !== TOKEN.START_EXPR) {
-      if (this._flags.last_token.type === TOKEN.START_BLOCK && !this._flags.inline_frame) {
+      if (in_array(this._flags.last_token.type, [TOKEN.START_BLOCK, TOKEN.SEMICOLON]) && !this._flags.inline_frame) {
         this.print_newline();
       } else {
         this._output.space_before_token = true;
@@ -1036,7 +1036,9 @@ Beautifier.prototype.handle_word = function(current_token) {
   }
 
   if (this._flags.last_token.type === TOKEN.COMMA || this._flags.last_token.type === TOKEN.START_EXPR || this._flags.last_token.type === TOKEN.EQUALS || this._flags.last_token.type === TOKEN.OPERATOR) {
-    if (!this.start_of_object_property()) {
+    if (!this.start_of_object_property() && !(
+        // start of object property is different for numeric values with +/- prefix operators
+        in_array(this._flags.last_token.text, ['+', '-']) && this._last_last_text === ':' && this._flags.parent.mode === MODE.ObjectLiteral)) {
       this.allow_wrap_or_preserved_newline(current_token);
     }
   }
@@ -1317,6 +1319,12 @@ Beautifier.prototype.handle_operator = function(current_token) {
     return;
   }
 
+  if (in_array(current_token.text, ['-', '+']) && this.start_of_object_property()) {
+    // numeric value with +/- symbol in front as a property
+    this.print_token(current_token);
+    return;
+  }
+
   // Allow line wrapping between operators when operator_position is
   //   set to before or preserve
   if (this._flags.last_token.type === TOKEN.OPERATOR && in_array(this._options.operator_position, OPERATOR_POSITION_BEFORE_OR_PRESERVE)) {
@@ -2143,12 +2151,13 @@ var nonASCIIidentifierChars = "\\u0300-\\u036f\\u0483-\\u0487\\u0591-\\u05bd\\u0
 //var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]");
 //var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]");
 
-var identifierStart = "(?:\\\\u[0-9a-fA-F]{4}|[" + baseASCIIidentifierStartChars + nonASCIIidentifierStartChars + "])";
-var identifierChars = "(?:\\\\u[0-9a-fA-F]{4}|[" + baseASCIIidentifierChars + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "])*";
+var unicodeEscapeOrCodePoint = "\\\\u[0-9a-fA-F]{4}|\\\\u\\{[0-9a-fA-F]+\\}";
+var identifierStart = "(?:" + unicodeEscapeOrCodePoint + "|[" + baseASCIIidentifierStartChars + nonASCIIidentifierStartChars + "])";
+var identifierChars = "(?:" + unicodeEscapeOrCodePoint + "|[" + baseASCIIidentifierChars + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "])*";
 
 exports.identifier = new RegExp(identifierStart + identifierChars, 'g');
 exports.identifierStart = new RegExp(identifierStart);
-exports.identifierMatch = new RegExp("(?:\\\\u[0-9a-fA-F]{4}|[" + baseASCIIidentifierChars + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "])+");
+exports.identifierMatch = new RegExp("(?:" + unicodeEscapeOrCodePoint + "|[" + baseASCIIidentifierChars + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "])+");
 
 var nonASCIIwhitespace = /[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]/; // jshint ignore:line
 
@@ -2337,10 +2346,10 @@ function Options(options, merge_child_field) {
 
   this.indent_empty_lines = this._get_boolean('indent_empty_lines');
 
-  // valid templating languages ['django', 'erb', 'handlebars', 'php', 'smarty']
-  // For now, 'auto' = all off for javascript, all on for html (and inline javascript).
+  // valid templating languages ['django', 'erb', 'handlebars', 'php', 'smarty', 'angular']
+  // For now, 'auto' = all off for javascript, all except angular on for html (and inline javascript/css).
   // other values ignored
-  this.templating = this._get_selection_list('templating', ['auto', 'none', 'django', 'erb', 'handlebars', 'php', 'smarty'], ['auto']);
+  this.templating = this._get_selection_list('templating', ['auto', 'none', 'angular', 'django', 'erb', 'handlebars', 'php', 'smarty'], ['auto']);
 }
 
 Options.prototype._get_array = function(name, default_value) {
@@ -2636,6 +2645,7 @@ Tokenizer.prototype._get_next_token = function(previous_token, open_token) { //
 
   token = token || this._read_non_javascript(c);
   token = token || this._read_string(c);
+  token = token || this._read_pair(c, this._input.peek(1)); // Issue #2062 hack for record type '#{'
   token = token || this._read_word(previous_token);
   token = token || this._read_singles(c);
   token = token || this._read_comment(c);
@@ -2694,6 +2704,19 @@ Tokenizer.prototype._read_singles = function(c) {
   return token;
 };
 
+Tokenizer.prototype._read_pair = function(c, d) {
+  var token = null;
+  if (c === '#' && d === '{') {
+    token = this._create_token(TOKEN.START_BLOCK, c + d);
+  }
+
+  if (token) {
+    this._input.next();
+    this._input.next();
+  }
+  return token;
+};
+
 Tokenizer.prototype._read_punctuation = function() {
   var resulting_string = this.__patterns.punct.read();
 
@@ -2939,6 +2962,9 @@ function unescape_string(s) {
         matched = input_scan.match(/x([0-9A-Fa-f]{2})/g);
       } else if (input_scan.peek() === 'u') {
         matched = input_scan.match(/u([0-9A-Fa-f]{4})/g);
+        if (!matched) {
+          matched = input_scan.match(/u\{([0-9A-Fa-f]+)\}/g);
+        }
       } else {
         out += '\\';
         if (input_scan.hasNext()) {
@@ -2962,7 +2988,9 @@ function unescape_string(s) {
       } else if (escaped >= 0x00 && escaped < 0x20) {
         // leave 0x00...0x1f escaped
         out += '\\' + matched[0];
-        continue;
+      } else if (escaped > 0x10FFFF) {
+        // If the escape sequence is out of bounds, keep the original sequence and continue conversion
+        out += '\\' + matched[0];
       } else if (escaped === 0x22 || escaped === 0x27 || escaped === 0x5c) {
         // single-quote, apostrophe, backslash - escape these
         out += '\\' + String.fromCharCode(escaped);
@@ -3785,7 +3813,8 @@ var template_names = {
   erb: false,
   handlebars: false,
   php: false,
-  smarty: false
+  smarty: false,
+  angular: false
 };
 
 // This lets templates appear anywhere we would do a readUntil
diff --git a/lib/editor/atto/plugins/html/yui/src/beautify/readme_moodle.txt b/lib/editor/atto/plugins/html/yui/src/beautify/readme_moodle.txt
index 50583795bcd4..150a51141586 100644
--- a/lib/editor/atto/plugins/html/yui/src/beautify/readme_moodle.txt
+++ b/lib/editor/atto/plugins/html/yui/src/beautify/readme_moodle.txt
@@ -1,7 +1,7 @@
 Description of importing the js-beautify library into Moodle.
 
 * Download the latest version from https://github.com/beautify-web/js-beautify/releases
-* Copy lib/beautify*.js into lib/editor/atto/plugins/html/yui/src/beautify/js
+* Copy js/lib/beautify*.js into lib/editor/atto/plugins/html/yui/src/beautify/js
 * Copy LICENSE into lib/editor/atto/plugins/html/yui/src/beautify
 * Update lib/editor/atto/plugins/html/thirdpartylibs.xml
 * Rebuild the module
diff --git a/lib/editor/tiny/plugins/premium/lang/en/tiny_premium.php b/lib/editor/tiny/plugins/premium/lang/en/tiny_premium.php
index dd88bf64b8a7..78788f06e978 100644
--- a/lib/editor/tiny/plugins/premium/lang/en/tiny_premium.php
+++ b/lib/editor/tiny/plugins/premium/lang/en/tiny_premium.php
@@ -25,8 +25,8 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$string['pluginname'] = 'Tiny premium';
+$string['pluginname'] = 'TinyMCE Premium';
 $string['apikey'] = 'API key';
-$string['apikey_desc'] = 'Your Tiny premium API key requires a paid subscription. You can find your key on your Tiny Cloud account page.';
-$string['premium:accesspremium'] = 'Access Tiny Premium features';
+$string['apikey_desc'] = '<p>Your API key is available on your <a target="_blank" href="https://www.tiny.cloud">Tiny Cloud</a> account page if you have purchased a subscription, or if you are on a free trial.</p><p>See the list of available TinyMCE Premium features for Moodle in <a target="_blank" href="https://docs.moodle.org/en/TinyMCE_editor#TinyMCE_Premium">Moodle Docs</a>.</p>';
+$string['premium:accesspremium'] = 'Access TinyMCE Premium features';
 $string['privacy:metadata'] = 'The Tiny premium plugin for TinyMCE does not store any personal data.';
diff --git a/lib/external/tests/external_api_test.php b/lib/external/tests/external_api_test.php
index cc359cae2294..f806785b7797 100644
--- a/lib/external/tests/external_api_test.php
+++ b/lib/external/tests/external_api_test.php
@@ -469,7 +469,6 @@ public function test_call_external_function(): void {
     protected function get_context_from_params() {
         $rc = new \ReflectionClass(external_api::class);
         $method = $rc->getMethod('get_context_from_params');
-        $method->setAccessible(true);
         return $method->invokeArgs(null, func_get_args());
     }
 }
diff --git a/lib/filestorage/tests/file_system_filedir_test.php b/lib/filestorage/tests/file_system_filedir_test.php
index 2d7532f405d1..69d5bca3462e 100644
--- a/lib/filestorage/tests/file_system_filedir_test.php
+++ b/lib/filestorage/tests/file_system_filedir_test.php
@@ -218,7 +218,6 @@ public function test_get_remote_path_from_hash() {
             ->willReturn($expectedresult);
 
         $method = new \ReflectionMethod(file_system_filedir::class, 'get_remote_path_from_hash');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($fs, [$contenthash]);
 
         $this->assertEquals($expectedresult, $result);
@@ -294,7 +293,6 @@ public function test_get_fulldir_from_hash($hash, $hashdir) {
 
         $fs = new file_system_filedir();
         $method = new \ReflectionMethod(file_system_filedir::class, 'get_fulldir_from_hash');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($fs, array($hash));
 
         $expectedpath = sprintf('%s/filedir/%s', $CFG->dataroot, $hashdir);
@@ -326,7 +324,6 @@ public function test_get_fulldir_from_storedfile($hash, $hashdir) {
 
         $fs = new file_system_filedir();
         $method = new \ReflectionMethod('file_system_filedir', 'get_fulldir_from_storedfile');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($fs, array($file));
 
         $expectedpath = sprintf('%s/filedir/%s', $CFG->dataroot, $hashdir);
@@ -345,7 +342,6 @@ public function test_get_fulldir_from_storedfile($hash, $hashdir) {
      */
     public function test_get_contentdir_from_hash($hash, $hashdir) {
         $method = new \ReflectionMethod(file_system_filedir::class, 'get_contentdir_from_hash');
-        $method->setAccessible(true);
 
         $fs = new file_system_filedir();
         $result = $method->invokeArgs($fs, array($hash));
@@ -365,7 +361,6 @@ public function test_get_contentdir_from_hash($hash, $hashdir) {
      */
     public function test_get_contentpath_from_hash($hash, $hashdir) {
         $method = new \ReflectionMethod(file_system_filedir::class, 'get_contentpath_from_hash');
-        $method->setAccessible(true);
 
         $fs = new file_system_filedir();
         $result = $method->invokeArgs($fs, array($hash));
@@ -389,7 +384,6 @@ public function test_get_trash_fullpath_from_hash($hash, $hashdir) {
 
         $fs = new file_system_filedir();
         $method = new \ReflectionMethod(file_system_filedir::class, 'get_trash_fullpath_from_hash');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($fs, array($hash));
 
         $expectedpath = sprintf('%s/trashdir/%s/%s', $CFG->dataroot, $hashdir, $hash);
@@ -411,7 +405,6 @@ public function test_get_trash_fulldir_from_hash($hash, $hashdir) {
 
         $fs = new file_system_filedir();
         $method = new \ReflectionMethod(file_system_filedir::class, 'get_trash_fulldir_from_hash');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($fs, array($hash));
 
         $expectedpath = sprintf('%s/trashdir/%s', $CFG->dataroot, $hashdir);
@@ -486,7 +479,6 @@ public function test_recover_file() {
 
         $fs = new file_system_filedir();
         $method = new \ReflectionMethod(file_system_filedir::class, 'recover_file');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($fs, array($file));
 
         // Test the output.
@@ -526,7 +518,6 @@ public function test_recover_file_already_present() {
 
         $fs = new file_system_filedir();
         $method = new \ReflectionMethod(file_system_filedir::class, 'recover_file');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($fs, array($file));
 
         // Test the output.
@@ -564,7 +555,6 @@ public function test_recover_file_size_mismatch() {
 
         $fs = new file_system_filedir();
         $method = new \ReflectionMethod(file_system_filedir::class, 'recover_file');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($fs, array($file));
 
         // Test the output.
@@ -601,7 +591,6 @@ public function test_recover_file_has_mismatch() {
 
         $fs = new file_system_filedir();
         $method = new \ReflectionMethod(file_system_filedir::class, 'recover_file');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($fs, array($file));
 
         // Test the output.
@@ -635,7 +624,6 @@ public function test_recover_file_alttrash() {
 
         $fs = new file_system_filedir();
         $method = new \ReflectionMethod(file_system_filedir::class, 'recover_file');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($fs, array($file));
 
         // Test the output.
@@ -675,7 +663,6 @@ public function test_recover_file_contentdir_readonly() {
 
         $fs = new file_system_filedir();
         $method = new \ReflectionMethod(file_system_filedir::class, 'recover_file');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($fs, array($file));
 
         // Test the output.
@@ -1092,7 +1079,6 @@ public function test_empty_trash() {
 
         $fs = new file_system_filedir();
         $method = new \ReflectionMethod(file_system_filedir::class, 'empty_trash');
-        $method->setAccessible(true);
         $result = $method->invoke($fs);
 
         $this->assertTrue($vfileroot->hasChild('filedir/0f/f3/' . $contenthash));
diff --git a/lib/filestorage/tests/file_system_test.php b/lib/filestorage/tests/file_system_test.php
index 9a854308ed93..edd1d8d1075f 100644
--- a/lib/filestorage/tests/file_system_test.php
+++ b/lib/filestorage/tests/file_system_test.php
@@ -494,7 +494,6 @@ public function test_is_file_removable_empty() {
         $contenthash = \file_storage::hash_from_string($filecontent);
 
         $method = new \ReflectionMethod(file_system::class, 'is_file_removable');
-        $method->setAccessible(true);
         $result = $method->invokeArgs(null, [$contenthash]);
         $this->assertFalse($result);
     }
@@ -517,7 +516,6 @@ public function test_is_file_removable_in_use() {
         $DB->method('record_exists')->willReturn(true);
 
         $method = new \ReflectionMethod(file_system::class, 'is_file_removable');
-        $method->setAccessible(true);
         $result = $method->invokeArgs(null, [$contenthash]);
 
         $this->assertFalse($result);
@@ -541,7 +539,6 @@ public function test_is_file_removable_not_in_use() {
         $DB->method('record_exists')->willReturn(false);
 
         $method = new \ReflectionMethod(file_system::class, 'is_file_removable');
-        $method->setAccessible(true);
         $result = $method->invokeArgs(null, [$contenthash]);
 
         $this->assertTrue($result);
@@ -910,7 +907,6 @@ public function test_get_imageinfo_from_path() {
         $fs = $this->get_testable_mock();
 
         $method = new \ReflectionMethod(file_system::class, 'get_imageinfo_from_path');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($fs, [$filepath]);
 
         $this->assertArrayHasKey('width', $result);
@@ -932,7 +928,6 @@ public function test_get_imageinfo_from_path_no_image() {
         $fs = $this->get_testable_mock();
 
         $method = new \ReflectionMethod(file_system::class, 'get_imageinfo_from_path');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($fs, [$filepath]);
 
         $this->assertFalse($result);
@@ -949,7 +944,6 @@ public function test_get_imageinfo_from_path_svg_viewbox() {
         $fs = $this->get_testable_mock();
 
         $method = new \ReflectionMethod(file_system::class, 'get_imageinfo_from_path');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($fs, [$filepath]);
 
         $this->assertArrayHasKey('width', $result);
@@ -971,7 +965,6 @@ public function test_get_imageinfo_from_path_svg_with_width_height() {
         $fs = $this->get_testable_mock();
 
         $method = new \ReflectionMethod(file_system::class, 'get_imageinfo_from_path');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($fs, [$filepath]);
 
         $this->assertArrayHasKey('width', $result);
@@ -993,7 +986,6 @@ public function test_get_imageinfo_from_path_svg_without_attribute() {
         $fs = $this->get_testable_mock();
 
         $method = new \ReflectionMethod(file_system::class, 'get_imageinfo_from_path');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($fs, [$filepath]);
 
         $this->assertArrayHasKey('width', $result);
@@ -1015,7 +1007,6 @@ public function test_get_imageinfo_from_path_svg_invalid() {
         $fs = $this->get_testable_mock();
 
         $method = new \ReflectionMethod(file_system::class, 'get_imageinfo_from_path');
-        $method->setAccessible(true);
         $result = $method->invokeArgs($fs, [$filepath]);
 
         $this->assertFalse($result);
diff --git a/lib/form/amd/build/events.min.js b/lib/form/amd/build/events.min.js
index 1769f39fabae..2dcca565d70b 100644
--- a/lib/form/amd/build/events.min.js
+++ b/lib/form/amd/build/events.min.js
@@ -14,6 +14,6 @@ define("core_form/events",["exports","core/str","core/event_dispatcher","jquery"
    *     window.console.log(e.target); // The form that was submitted.
    *     window.console.log(e.detail.skipValidation); // Whether form validation was skipped.
    * });
-   */let changesMadeString;Object.defineProperty(_exports,"__esModule",{value:!0}),_exports.types=_exports.triggerUploadStarted=_exports.triggerUploadCompleted=_exports.notifyUploadStarted=_exports.notifyUploadCompleted=_exports.notifyUploadChanged=_exports.notifyFormSubmittedByJavascript=_exports.notifyFormError=_exports.notifyFieldValidationFailure=_exports.eventTypes=void 0,_jquery=_interopRequireDefault(_jquery),_yui=_interopRequireDefault(_yui);const changesMadeCheck=e=>{e&&(e.returnValue=changesMadeString)},eventTypes={formError:"core_form/error",formSubmittedByJavascript:"core_form/submittedByJavascript",formFieldValidationFailed:"core_form/fieldValidationFailed",uploadStarted:"core_form/uploadStarted",uploadCompleted:"core_form/uploadCompleted",uploadChanged:"core_form/uploadChanged"};_exports.eventTypes=eventTypes;_exports.notifyFormError=field=>(0,_event_dispatcher.dispatchEvent)(eventTypes.formError,{},field);_exports.notifyFormSubmittedByJavascript=function(form){let skipValidation=arguments.length>1&&void 0!==arguments[1]&&arguments[1],fallbackHandled=arguments.length>2&&void 0!==arguments[2]&&arguments[2];skipValidation&&(window.skipClientValidation=!0);const customEvent=(0,_event_dispatcher.dispatchEvent)(eventTypes.formSubmittedByJavascript,{skipValidation:skipValidation,fallbackHandled:fallbackHandled},form);return skipValidation&&(window.skipClientValidation=!1),customEvent};_exports.notifyFieldValidationFailure=(field,message)=>(0,_event_dispatcher.dispatchEvent)(eventTypes.formFieldValidationFailed,{message:message},field,{cancelable:!0});const notifyUploadStarted=async elementId=>(changesMadeString=await(0,_str.getString)("changesmadereallygoaway","moodle"),window.addEventListener("beforeunload",changesMadeCheck),(0,_event_dispatcher.dispatchEvent)(eventTypes.uploadStarted,{},document.getElementById(elementId),{bubbles:!0,cancellable:!1}));_exports.notifyUploadStarted=notifyUploadStarted;const notifyUploadCompleted=elementId=>(window.removeEventListener("beforeunload",changesMadeCheck),(0,_event_dispatcher.dispatchEvent)(eventTypes.uploadCompleted,{},document.getElementById(elementId),{bubbles:!0,cancellable:!1}));_exports.notifyUploadCompleted=notifyUploadCompleted;const triggerUploadStarted=notifyUploadStarted;_exports.triggerUploadStarted=triggerUploadStarted;const triggerUploadCompleted=notifyUploadCompleted;_exports.triggerUploadCompleted=triggerUploadCompleted;_exports.types={uploadStarted:"core_form/uploadStarted",uploadCompleted:"core_form/uploadCompleted"};let legacyEventsRegistered=!1;legacyEventsRegistered||(_yui.default.use("event","moodle-core-event",(()=>{document.addEventListener(eventTypes.formError,(e=>{const element=_yui.default.one(e.target),formElement=_yui.default.one(e.target.closest("form"));_yui.default.Global.fire(M.core.globalEvents.FORM_ERROR,{formid:formElement.generateID(),elementid:element.generateID()})})),document.addEventListener(eventTypes.formSubmittedByJavascript,(e=>{if(e.detail.fallbackHandled)return;e.skipValidation&&(window.skipClientValidation=!0);const form=_yui.default.one(e.target);form.fire(M.core.event.FORM_SUBMIT_AJAX,{currentTarget:form,fallbackHandled:!0}),e.skipValidation&&(window.skipClientValidation=!1)}))})),document.addEventListener(eventTypes.formFieldValidationFailed,(e=>{const legacyEvent=_jquery.default.Event("core_form-field-validation");(0,_jquery.default)(e.target).trigger(legacyEvent,e.detail.message)})),legacyEventsRegistered=!0);_exports.notifyUploadChanged=elementId=>(0,_event_dispatcher.dispatchEvent)(eventTypes.uploadChanged,{},document.getElementById(elementId),{bubbles:!0,cancellable:!1})}));
+   */let changesMadeString;Object.defineProperty(_exports,"__esModule",{value:!0}),_exports.types=_exports.triggerUploadStarted=_exports.triggerUploadCompleted=_exports.notifyUploadStarted=_exports.notifyUploadCompleted=_exports.notifyUploadChanged=_exports.notifyFormSubmittedByJavascript=_exports.notifyFormError=_exports.notifyFieldValidationFailure=_exports.notifyFieldStructureChanged=_exports.eventTypes=void 0,_jquery=_interopRequireDefault(_jquery),_yui=_interopRequireDefault(_yui);const changesMadeCheck=e=>{e&&(e.returnValue=changesMadeString)},eventTypes={formError:"core_form/error",formSubmittedByJavascript:"core_form/submittedByJavascript",formFieldValidationFailed:"core_form/fieldValidationFailed",uploadStarted:"core_form/uploadStarted",uploadCompleted:"core_form/uploadCompleted",uploadChanged:"core_form/uploadChanged",fieldStructureChanged:"core_form/fieldStructureChanged"};_exports.eventTypes=eventTypes;_exports.notifyFormError=field=>(0,_event_dispatcher.dispatchEvent)(eventTypes.formError,{},field);_exports.notifyFormSubmittedByJavascript=function(form){let skipValidation=arguments.length>1&&void 0!==arguments[1]&&arguments[1],fallbackHandled=arguments.length>2&&void 0!==arguments[2]&&arguments[2];skipValidation&&(window.skipClientValidation=!0);const customEvent=(0,_event_dispatcher.dispatchEvent)(eventTypes.formSubmittedByJavascript,{skipValidation:skipValidation,fallbackHandled:fallbackHandled},form);return skipValidation&&(window.skipClientValidation=!1),customEvent};_exports.notifyFieldValidationFailure=(field,message)=>(0,_event_dispatcher.dispatchEvent)(eventTypes.formFieldValidationFailed,{message:message},field,{cancelable:!0});const notifyUploadStarted=async elementId=>(changesMadeString=await(0,_str.getString)("changesmadereallygoaway","moodle"),window.addEventListener("beforeunload",changesMadeCheck),(0,_event_dispatcher.dispatchEvent)(eventTypes.uploadStarted,{},document.getElementById(elementId),{bubbles:!0,cancellable:!1}));_exports.notifyUploadStarted=notifyUploadStarted;const notifyUploadCompleted=elementId=>(window.removeEventListener("beforeunload",changesMadeCheck),(0,_event_dispatcher.dispatchEvent)(eventTypes.uploadCompleted,{},document.getElementById(elementId),{bubbles:!0,cancellable:!1}));_exports.notifyUploadCompleted=notifyUploadCompleted;const triggerUploadStarted=notifyUploadStarted;_exports.triggerUploadStarted=triggerUploadStarted;const triggerUploadCompleted=notifyUploadCompleted;_exports.triggerUploadCompleted=triggerUploadCompleted;_exports.types={uploadStarted:"core_form/uploadStarted",uploadCompleted:"core_form/uploadCompleted"};let legacyEventsRegistered=!1;legacyEventsRegistered||(_yui.default.use("event","moodle-core-event",(()=>{document.addEventListener(eventTypes.formError,(e=>{const element=_yui.default.one(e.target),formElement=_yui.default.one(e.target.closest("form"));_yui.default.Global.fire(M.core.globalEvents.FORM_ERROR,{formid:formElement.generateID(),elementid:element.generateID()})})),document.addEventListener(eventTypes.formSubmittedByJavascript,(e=>{if(e.detail.fallbackHandled)return;e.skipValidation&&(window.skipClientValidation=!0);const form=_yui.default.one(e.target);form.fire(M.core.event.FORM_SUBMIT_AJAX,{currentTarget:form,fallbackHandled:!0}),e.skipValidation&&(window.skipClientValidation=!1)}))})),document.addEventListener(eventTypes.formFieldValidationFailed,(e=>{const legacyEvent=_jquery.default.Event("core_form-field-validation");(0,_jquery.default)(e.target).trigger(legacyEvent,e.detail.message)})),legacyEventsRegistered=!0);_exports.notifyUploadChanged=elementId=>(0,_event_dispatcher.dispatchEvent)(eventTypes.uploadChanged,{},document.getElementById(elementId),{bubbles:!0,cancellable:!1});_exports.notifyFieldStructureChanged=elementId=>(0,_event_dispatcher.dispatchEvent)(eventTypes.fieldStructureChanged,{},document.getElementById(elementId),{bubbles:!0,cancellable:!1})}));
 
 //# sourceMappingURL=events.min.js.map
\ No newline at end of file
diff --git a/lib/form/amd/build/events.min.js.map b/lib/form/amd/build/events.min.js.map
index f928286812d6..5757b431f7d2 100644
--- a/lib/form/amd/build/events.min.js.map
+++ b/lib/form/amd/build/events.min.js.map
@@ -1 +1 @@
-{"version":3,"file":"events.min.js","sources":["../src/events.js"],"sourcesContent":["// This file is part of Moodle - http://moodle.org/\n//\n// Moodle is free software: you can redistribute it and/or modify\n// it under the terms of the GNU General Public License as published by\n// the Free Software Foundation, either version 3 of the License, or\n// (at your option) any later version.\n//\n// Moodle is distributed in the hope that it will be useful,\n// but WITHOUT ANY WARRANTY; without even the implied warranty of\n// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n// GNU General Public License for more details.\n//\n// You should have received a copy of the GNU General Public License\n// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.\n\n/**\n * Javascript events for the `core_form` subsystem.\n *\n * @module core_form/events\n * @copyright 2021 Huong Nguyen <huongnv13@gmail.com>\n * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later\n * @since 3.10\n *\n * @example <caption>Example of listening to a form event.</caption>\n * import {eventTypes as formEventTypes} from 'core_form/events';\n *\n * document.addEventListener(formEventTypes.formSubmittedByJavascript, e => {\n *     window.console.log(e.target); // The form that was submitted.\n *     window.console.log(e.detail.skipValidation); // Whether form validation was skipped.\n * });\n */\n\nimport {getString} from 'core/str';\nimport {dispatchEvent} from 'core/event_dispatcher';\n\nlet changesMadeString;\n\n/**\n * Prevent user navigate away when upload progress still running.\n * @param {Event} e The event\n */\nconst changesMadeCheck = e => {\n    if (e) {\n        e.returnValue = changesMadeString;\n    }\n};\n\n/**\n * Events for `core_form`.\n *\n * @constant\n * @property {String} formError See {@link event:core_form/error}\n * @property {String} formFieldValidationFailed See {@link event:core_form/fieldValidationFailed}\n * @property {String} formSubmittedByJavascript See {@link event:core_form/submittedByJavascript}\n * @property {String} uploadChanged See {@link event:core_form/uploadChanged}\n */\nexport const eventTypes = {\n    /**\n     * An event triggered when a form contains an error\n     *\n     * @event formError\n     * @type {CustomEvent}\n     * @property {HTMLElement} target The form field which errored\n     */\n    formError: 'core_form/error',\n\n    /**\n     * An event triggered when an mform is about to be submitted via javascript.\n     *\n     * @event core_form/submittedByJavascript\n     * @type {CustomEvent}\n     * @property {HTMLElement} target The form that was submitted\n     * @property {object} detail\n     * @property {boolean} detail.skipValidation Whether the form was submitted without validation (i.e. via a Cancel button)\n     * @property {boolean} detail.fallbackHandled Whether the legacy YUI event has been handled\n     */\n    formSubmittedByJavascript: 'core_form/submittedByJavascript',\n\n    /**\n     * An event triggered upon form field validation failure.\n     *\n     * @event core_form/fieldValidationFailed\n     * @type {CustomEvent}\n     * @property {HTMLElement} target The field that failed validation\n     * @property {object} detail\n     * @property {String} detail.message The message displayed upon failure\n     */\n    formFieldValidationFailed: 'core_form/fieldValidationFailed',\n\n    /**\n     * An event triggered when an upload is started\n     *\n     * @event core_form/uploadStarted\n     * @type {CustomEvent}\n     * @property {HTMLElement} target The location where the upload began\n     */\n    uploadStarted: 'core_form/uploadStarted',\n\n    /**\n     * An event triggered when an upload completes\n     *\n     * @event core_form/uploadCompleted\n     * @type {CustomEvent}\n     * @property {HTMLElement} target The location where the upload completed\n     */\n    uploadCompleted: 'core_form/uploadCompleted',\n\n    /**\n     * An event triggered when a file upload field has been changed.\n     *\n     * @event core_form/uploadChanged\n     * @type {CustomEvent}\n     * @property {HTMLElement} target The form field which was changed\n     */\n    uploadChanged: 'core_form/uploadChanged',\n};\n\n// These are only imported for legacy.\nimport jQuery from 'jquery';\nimport Y from 'core/yui';\n\n/**\n * Trigger an event to indicate that a form field contained an error.\n *\n * @method notifyFormError\n * @param {HTMLElement} field The form field causing the error\n * @returns {CustomEvent}\n * @fires formError\n */\nexport const notifyFormError = field => dispatchEvent(eventTypes.formError, {}, field);\n\n/**\n * Trigger an event to indiciate that a form was submitted by Javascript.\n *\n * @method\n * @param {HTMLElement} form The form that was submitted\n * @param {Boolean} skipValidation Submit the form without validation. E.g. \"Cancel\".\n * @param {Boolean} fallbackHandled The legacy YUI event has been handled\n * @returns {CustomEvent}\n * @fires formSubmittedByJavascript\n */\nexport const notifyFormSubmittedByJavascript = (form, skipValidation = false, fallbackHandled = false) => {\n    if (skipValidation) {\n        window.skipClientValidation = true;\n    }\n\n    const customEvent = dispatchEvent(\n        eventTypes.formSubmittedByJavascript,\n        {\n            skipValidation,\n            fallbackHandled,\n        },\n        form\n    );\n\n    if (skipValidation) {\n        window.skipClientValidation = false;\n    }\n\n    return customEvent;\n};\n\n/**\n * Trigger an event to indicate that a form field contained an error.\n *\n * @method notifyFieldValidationFailure\n * @param {HTMLElement} field The field which failed validation\n * @param {String} message The message displayed\n * @returns {CustomEvent}\n * @fires formFieldValidationFailed\n */\nexport const notifyFieldValidationFailure = (field, message) => dispatchEvent(\n    eventTypes.formFieldValidationFailed,\n    {\n        message,\n    },\n    field,\n    {\n        cancelable: true\n    }\n);\n\n/**\n * Trigger an event to indicate that an upload was started.\n *\n * @method\n * @param {String} elementId The element which was uploaded to\n * @returns {CustomEvent}\n * @fires uploadStarted\n */\nexport const notifyUploadStarted = async elementId => {\n    // Add an additional check for changes made.\n    changesMadeString = await getString('changesmadereallygoaway', 'moodle');\n    window.addEventListener('beforeunload', changesMadeCheck);\n\n    return dispatchEvent(\n        eventTypes.uploadStarted,\n        {},\n        document.getElementById(elementId),\n        {\n            bubbles: true,\n            cancellable: false,\n        }\n    );\n};\n\n/**\n * Trigger an event to indicate that an upload was completed.\n *\n * @method\n * @param {String} elementId The element which was uploaded to\n * @returns {CustomEvent}\n * @fires uploadCompleted\n */\nexport const notifyUploadCompleted = elementId => {\n    // Remove the additional check for changes made.\n    window.removeEventListener('beforeunload', changesMadeCheck);\n\n    return dispatchEvent(\n        eventTypes.uploadCompleted,\n        {},\n        document.getElementById(elementId),\n        {\n            bubbles: true,\n            cancellable: false,\n        }\n    );\n};\n\n/**\n * Trigger upload start event.\n *\n * @method\n * @param {String} elementId\n * @returns {CustomEvent}\n * @fires uploadStarted\n * @deprecated Since Moodle 4.0 See {@link module:core_form/events.notifyUploadStarted notifyUploadStarted}\n */\nexport const triggerUploadStarted = notifyUploadStarted;\n\n/**\n * Trigger upload complete event.\n *\n * @method\n * @param {String} elementId\n * @returns {CustomEvent}\n * @fires uploadCompleted\n * @deprecated Since Moodle 4.0 See {@link module:core_form/events.notifyUploadCompleted notifyUploadCompleted}\n */\nexport const triggerUploadCompleted = notifyUploadCompleted;\n\n/**\n * List of the events.\n *\n * @deprecated since Moodle 4.0. See {@link module:core_form/events.eventTypes eventTypes} instead.\n **/\nexport const types = {\n    uploadStarted: 'core_form/uploadStarted',\n    uploadCompleted: 'core_form/uploadCompleted',\n};\n\nlet legacyEventsRegistered = false;\nif (!legacyEventsRegistered) {\n    // The following event triggers are legacy and will be removed in the future.\n    // The following approach provides a backwards-compatability layer for the new events.\n    // Code should be updated to make use of native events.\n    Y.use('event', 'moodle-core-event', () => {\n\n        // Watch for the new native formError event, and trigger the legacy YUI event.\n        document.addEventListener(eventTypes.formError, e => {\n            const element = Y.one(e.target);\n            const formElement = Y.one(e.target.closest('form'));\n\n            Y.Global.fire(\n                M.core.globalEvents.FORM_ERROR,\n                {\n                    formid: formElement.generateID(),\n                    elementid: element.generateID(),\n                }\n            );\n        });\n\n        // Watch for the new native formSubmittedByJavascript event, and trigger the legacy YUI event.\n        document.addEventListener(eventTypes.formSubmittedByJavascript, e => {\n            if (e.detail.fallbackHandled) {\n                // This event was originally generated by a YUI event.\n                // Do not generate another as this will recurse.\n                return;\n            }\n\n            if (e.skipValidation) {\n                window.skipClientValidation = true;\n            }\n\n            // Trigger the legacy YUI event.\n            const form = Y.one(e.target);\n            form.fire(\n                M.core.event.FORM_SUBMIT_AJAX,\n                {\n                    currentTarget: form,\n                    fallbackHandled: true,\n                }\n            );\n\n            if (e.skipValidation) {\n                window.skipClientValidation = false;\n            }\n        });\n    });\n\n    // Watch for the new native formFieldValidationFailed event, and trigger the legacy jQuery event.\n    document.addEventListener(eventTypes.formFieldValidationFailed, e => {\n        // Note: The \"core_form-field-validation\" event is hard-coded in core/event.\n        // This is not included to prevent cyclic module dependencies.\n        const legacyEvent = jQuery.Event(\"core_form-field-validation\");\n\n        jQuery(e.target).trigger(legacyEvent, e.detail.message);\n    });\n\n    legacyEventsRegistered = true;\n}\n\n/**\n * Trigger an event to notify the file upload field has been changed.\n *\n * @method\n * @param {string} elementId The element which was changed\n * @returns {CustomEvent}\n * @fires uploadChanged\n */\nexport const notifyUploadChanged = elementId => dispatchEvent(\n    eventTypes.uploadChanged,\n    {},\n    document.getElementById(elementId),\n    {\n        bubbles: true,\n        cancellable: false,\n    }\n);\n"],"names":["changesMadeString","changesMadeCheck","e","returnValue","eventTypes","formError","formSubmittedByJavascript","formFieldValidationFailed","uploadStarted","uploadCompleted","uploadChanged","field","form","skipValidation","fallbackHandled","window","skipClientValidation","customEvent","message","cancelable","notifyUploadStarted","async","addEventListener","document","getElementById","elementId","bubbles","cancellable","notifyUploadCompleted","removeEventListener","triggerUploadStarted","triggerUploadCompleted","legacyEventsRegistered","use","element","Y","one","target","formElement","closest","Global","fire","M","core","globalEvents","FORM_ERROR","formid","generateID","elementid","detail","event","FORM_SUBMIT_AJAX","currentTarget","legacyEvent","jQuery","Event","trigger"],"mappings":";;;;;;;;;;;;;;;;SAmCIA,mcAMEC,iBAAmBC,IACjBA,IACAA,EAAEC,YAAcH,oBAaXI,WAAa,CAQtBC,UAAW,kBAYXC,0BAA2B,kCAW3BC,0BAA2B,kCAS3BC,cAAe,0BASfC,gBAAiB,4BASjBC,cAAe,mFAeYC,QAAS,mCAAcP,WAAWC,UAAW,GAAIM,gDAYjC,SAACC,UAAMC,uEAAwBC,wEACtED,iBACAE,OAAOC,sBAAuB,SAG5BC,aAAc,mCAChBb,WAAWE,0BACX,CACIO,eAAAA,eACAC,gBAAAA,iBAEJF,aAGAC,iBACAE,OAAOC,sBAAuB,GAG3BC,mDAYiC,CAACN,MAAOO,WAAY,mCAC5Dd,WAAWG,0BACX,CACIW,QAAAA,SAEJP,MACA,CACIQ,YAAY,UAYPC,oBAAsBC,MAAAA,YAE/BrB,wBAA0B,kBAAU,0BAA2B,UAC/De,OAAOO,iBAAiB,eAAgBrB,mBAEjC,mCACHG,WAAWI,cACX,GACAe,SAASC,eAAeC,WACxB,CACIC,SAAS,EACTC,aAAa,4DAaZC,sBAAwBH,YAEjCV,OAAOc,oBAAoB,eAAgB5B,mBAEpC,mCACHG,WAAWK,gBACX,GACAc,SAASC,eAAeC,WACxB,CACIC,SAAS,EACTC,aAAa,gEAcZG,qBAAuBV,6EAWvBW,uBAAyBH,4FAOjB,CACjBpB,cAAe,0BACfC,gBAAiB,iCAGjBuB,wBAAyB,EACxBA,sCAICC,IAAI,QAAS,qBAAqB,KAGhCV,SAASD,iBAAiBlB,WAAWC,WAAWH,UACtCgC,QAAUC,aAAEC,IAAIlC,EAAEmC,QAClBC,YAAcH,aAAEC,IAAIlC,EAAEmC,OAAOE,QAAQ,sBAEzCC,OAAOC,KACLC,EAAEC,KAAKC,aAAaC,WACpB,CACIC,OAAQR,YAAYS,aACpBC,UAAWd,QAAQa,kBAM/BxB,SAASD,iBAAiBlB,WAAWE,2BAA2BJ,OACxDA,EAAE+C,OAAOnC,uBAMTZ,EAAEW,iBACFE,OAAOC,sBAAuB,SAI5BJ,KAAOuB,aAAEC,IAAIlC,EAAEmC,QACrBzB,KAAK6B,KACDC,EAAEC,KAAKO,MAAMC,iBACb,CACIC,cAAexC,KACfE,iBAAiB,IAIrBZ,EAAEW,iBACFE,OAAOC,sBAAuB,SAM1CO,SAASD,iBAAiBlB,WAAWG,2BAA2BL,UAGtDmD,YAAcC,gBAAOC,MAAM,kDAE1BrD,EAAEmC,QAAQmB,QAAQH,YAAanD,EAAE+C,OAAO/B,YAGnDc,wBAAyB,gCAWMP,YAAa,mCAC5CrB,WAAWM,cACX,GACAa,SAASC,eAAeC,WACxB,CACIC,SAAS,EACTC,aAAa"}
\ No newline at end of file
+{"version":3,"file":"events.min.js","sources":["../src/events.js"],"sourcesContent":["// This file is part of Moodle - http://moodle.org/\n//\n// Moodle is free software: you can redistribute it and/or modify\n// it under the terms of the GNU General Public License as published by\n// the Free Software Foundation, either version 3 of the License, or\n// (at your option) any later version.\n//\n// Moodle is distributed in the hope that it will be useful,\n// but WITHOUT ANY WARRANTY; without even the implied warranty of\n// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n// GNU General Public License for more details.\n//\n// You should have received a copy of the GNU General Public License\n// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.\n\n/**\n * Javascript events for the `core_form` subsystem.\n *\n * @module core_form/events\n * @copyright 2021 Huong Nguyen <huongnv13@gmail.com>\n * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later\n * @since 3.10\n *\n * @example <caption>Example of listening to a form event.</caption>\n * import {eventTypes as formEventTypes} from 'core_form/events';\n *\n * document.addEventListener(formEventTypes.formSubmittedByJavascript, e => {\n *     window.console.log(e.target); // The form that was submitted.\n *     window.console.log(e.detail.skipValidation); // Whether form validation was skipped.\n * });\n */\n\nimport {getString} from 'core/str';\nimport {dispatchEvent} from 'core/event_dispatcher';\n\nlet changesMadeString;\n\n/**\n * Prevent user navigate away when upload progress still running.\n * @param {Event} e The event\n */\nconst changesMadeCheck = e => {\n    if (e) {\n        e.returnValue = changesMadeString;\n    }\n};\n\n/**\n * Events for `core_form`.\n *\n * @constant\n * @property {String} formError See {@link event:core_form/error}\n * @property {String} formFieldValidationFailed See {@link event:core_form/fieldValidationFailed}\n * @property {String} formSubmittedByJavascript See {@link event:core_form/submittedByJavascript}\n * @property {String} uploadChanged See {@link event:core_form/uploadChanged}\n * @property {String} fieldStructureChanged See {@link event:core_form/fieldStructureChanged}\n */\nexport const eventTypes = {\n    /**\n     * An event triggered when a form contains an error\n     *\n     * @event formError\n     * @type {CustomEvent}\n     * @property {HTMLElement} target The form field which errored\n     */\n    formError: 'core_form/error',\n\n    /**\n     * An event triggered when an mform is about to be submitted via javascript.\n     *\n     * @event core_form/submittedByJavascript\n     * @type {CustomEvent}\n     * @property {HTMLElement} target The form that was submitted\n     * @property {object} detail\n     * @property {boolean} detail.skipValidation Whether the form was submitted without validation (i.e. via a Cancel button)\n     * @property {boolean} detail.fallbackHandled Whether the legacy YUI event has been handled\n     */\n    formSubmittedByJavascript: 'core_form/submittedByJavascript',\n\n    /**\n     * An event triggered upon form field validation failure.\n     *\n     * @event core_form/fieldValidationFailed\n     * @type {CustomEvent}\n     * @property {HTMLElement} target The field that failed validation\n     * @property {object} detail\n     * @property {String} detail.message The message displayed upon failure\n     */\n    formFieldValidationFailed: 'core_form/fieldValidationFailed',\n\n    /**\n     * An event triggered when an upload is started\n     *\n     * @event core_form/uploadStarted\n     * @type {CustomEvent}\n     * @property {HTMLElement} target The location where the upload began\n     */\n    uploadStarted: 'core_form/uploadStarted',\n\n    /**\n     * An event triggered when an upload completes\n     *\n     * @event core_form/uploadCompleted\n     * @type {CustomEvent}\n     * @property {HTMLElement} target The location where the upload completed\n     */\n    uploadCompleted: 'core_form/uploadCompleted',\n\n    /**\n     * An event triggered when a file upload field has been changed.\n     *\n     * @event core_form/uploadChanged\n     * @type {CustomEvent}\n     * @property {HTMLElement} target The form field which was changed\n     */\n    uploadChanged: 'core_form/uploadChanged',\n\n    /**\n     * An event triggered when a form field structure has changed.\n     *\n     * @event core_form/fieldStructureChanged\n     * @type {CustomEvent}\n     * @property {HTMLElement} target The form field that has changed\n     */\n    fieldStructureChanged: 'core_form/fieldStructureChanged',\n};\n\n// These are only imported for legacy.\nimport jQuery from 'jquery';\nimport Y from 'core/yui';\n\n/**\n * Trigger an event to indicate that a form field contained an error.\n *\n * @method notifyFormError\n * @param {HTMLElement} field The form field causing the error\n * @returns {CustomEvent}\n * @fires formError\n */\nexport const notifyFormError = field => dispatchEvent(eventTypes.formError, {}, field);\n\n/**\n * Trigger an event to indiciate that a form was submitted by Javascript.\n *\n * @method\n * @param {HTMLElement} form The form that was submitted\n * @param {Boolean} skipValidation Submit the form without validation. E.g. \"Cancel\".\n * @param {Boolean} fallbackHandled The legacy YUI event has been handled\n * @returns {CustomEvent}\n * @fires formSubmittedByJavascript\n */\nexport const notifyFormSubmittedByJavascript = (form, skipValidation = false, fallbackHandled = false) => {\n    if (skipValidation) {\n        window.skipClientValidation = true;\n    }\n\n    const customEvent = dispatchEvent(\n        eventTypes.formSubmittedByJavascript,\n        {\n            skipValidation,\n            fallbackHandled,\n        },\n        form\n    );\n\n    if (skipValidation) {\n        window.skipClientValidation = false;\n    }\n\n    return customEvent;\n};\n\n/**\n * Trigger an event to indicate that a form field contained an error.\n *\n * @method notifyFieldValidationFailure\n * @param {HTMLElement} field The field which failed validation\n * @param {String} message The message displayed\n * @returns {CustomEvent}\n * @fires formFieldValidationFailed\n */\nexport const notifyFieldValidationFailure = (field, message) => dispatchEvent(\n    eventTypes.formFieldValidationFailed,\n    {\n        message,\n    },\n    field,\n    {\n        cancelable: true\n    }\n);\n\n/**\n * Trigger an event to indicate that an upload was started.\n *\n * @method\n * @param {String} elementId The element which was uploaded to\n * @returns {CustomEvent}\n * @fires uploadStarted\n */\nexport const notifyUploadStarted = async elementId => {\n    // Add an additional check for changes made.\n    changesMadeString = await getString('changesmadereallygoaway', 'moodle');\n    window.addEventListener('beforeunload', changesMadeCheck);\n\n    return dispatchEvent(\n        eventTypes.uploadStarted,\n        {},\n        document.getElementById(elementId),\n        {\n            bubbles: true,\n            cancellable: false,\n        }\n    );\n};\n\n/**\n * Trigger an event to indicate that an upload was completed.\n *\n * @method\n * @param {String} elementId The element which was uploaded to\n * @returns {CustomEvent}\n * @fires uploadCompleted\n */\nexport const notifyUploadCompleted = elementId => {\n    // Remove the additional check for changes made.\n    window.removeEventListener('beforeunload', changesMadeCheck);\n\n    return dispatchEvent(\n        eventTypes.uploadCompleted,\n        {},\n        document.getElementById(elementId),\n        {\n            bubbles: true,\n            cancellable: false,\n        }\n    );\n};\n\n/**\n * Trigger upload start event.\n *\n * @method\n * @param {String} elementId\n * @returns {CustomEvent}\n * @fires uploadStarted\n * @deprecated Since Moodle 4.0 See {@link module:core_form/events.notifyUploadStarted notifyUploadStarted}\n */\nexport const triggerUploadStarted = notifyUploadStarted;\n\n/**\n * Trigger upload complete event.\n *\n * @method\n * @param {String} elementId\n * @returns {CustomEvent}\n * @fires uploadCompleted\n * @deprecated Since Moodle 4.0 See {@link module:core_form/events.notifyUploadCompleted notifyUploadCompleted}\n */\nexport const triggerUploadCompleted = notifyUploadCompleted;\n\n/**\n * List of the events.\n *\n * @deprecated since Moodle 4.0. See {@link module:core_form/events.eventTypes eventTypes} instead.\n **/\nexport const types = {\n    uploadStarted: 'core_form/uploadStarted',\n    uploadCompleted: 'core_form/uploadCompleted',\n};\n\nlet legacyEventsRegistered = false;\nif (!legacyEventsRegistered) {\n    // The following event triggers are legacy and will be removed in the future.\n    // The following approach provides a backwards-compatability layer for the new events.\n    // Code should be updated to make use of native events.\n    Y.use('event', 'moodle-core-event', () => {\n\n        // Watch for the new native formError event, and trigger the legacy YUI event.\n        document.addEventListener(eventTypes.formError, e => {\n            const element = Y.one(e.target);\n            const formElement = Y.one(e.target.closest('form'));\n\n            Y.Global.fire(\n                M.core.globalEvents.FORM_ERROR,\n                {\n                    formid: formElement.generateID(),\n                    elementid: element.generateID(),\n                }\n            );\n        });\n\n        // Watch for the new native formSubmittedByJavascript event, and trigger the legacy YUI event.\n        document.addEventListener(eventTypes.formSubmittedByJavascript, e => {\n            if (e.detail.fallbackHandled) {\n                // This event was originally generated by a YUI event.\n                // Do not generate another as this will recurse.\n                return;\n            }\n\n            if (e.skipValidation) {\n                window.skipClientValidation = true;\n            }\n\n            // Trigger the legacy YUI event.\n            const form = Y.one(e.target);\n            form.fire(\n                M.core.event.FORM_SUBMIT_AJAX,\n                {\n                    currentTarget: form,\n                    fallbackHandled: true,\n                }\n            );\n\n            if (e.skipValidation) {\n                window.skipClientValidation = false;\n            }\n        });\n    });\n\n    // Watch for the new native formFieldValidationFailed event, and trigger the legacy jQuery event.\n    document.addEventListener(eventTypes.formFieldValidationFailed, e => {\n        // Note: The \"core_form-field-validation\" event is hard-coded in core/event.\n        // This is not included to prevent cyclic module dependencies.\n        const legacyEvent = jQuery.Event(\"core_form-field-validation\");\n\n        jQuery(e.target).trigger(legacyEvent, e.detail.message);\n    });\n\n    legacyEventsRegistered = true;\n}\n\n/**\n * Trigger an event to notify the file upload field has been changed.\n *\n * @method\n * @param {string} elementId The element which was changed\n * @returns {CustomEvent}\n * @fires uploadChanged\n */\nexport const notifyUploadChanged = elementId => dispatchEvent(\n    eventTypes.uploadChanged,\n    {},\n    document.getElementById(elementId),\n    {\n        bubbles: true,\n        cancellable: false,\n    }\n);\n\n/**\n * Trigger an event to notify the field structure has changed.\n *\n * @method\n * @param {string} elementId The element which was changed\n * @returns {CustomEvent}\n * @fires fieldStructureChanged\n */\nexport const notifyFieldStructureChanged = elementId => dispatchEvent(\n    eventTypes.fieldStructureChanged,\n    {},\n    document.getElementById(elementId),\n    {\n        bubbles: true,\n        cancellable: false,\n    }\n);\n"],"names":["changesMadeString","changesMadeCheck","e","returnValue","eventTypes","formError","formSubmittedByJavascript","formFieldValidationFailed","uploadStarted","uploadCompleted","uploadChanged","fieldStructureChanged","field","form","skipValidation","fallbackHandled","window","skipClientValidation","customEvent","message","cancelable","notifyUploadStarted","async","addEventListener","document","getElementById","elementId","bubbles","cancellable","notifyUploadCompleted","removeEventListener","triggerUploadStarted","triggerUploadCompleted","legacyEventsRegistered","use","element","Y","one","target","formElement","closest","Global","fire","M","core","globalEvents","FORM_ERROR","formid","generateID","elementid","detail","event","FORM_SUBMIT_AJAX","currentTarget","legacyEvent","jQuery","Event","trigger"],"mappings":";;;;;;;;;;;;;;;;SAmCIA,weAMEC,iBAAmBC,IACjBA,IACAA,EAAEC,YAAcH,oBAcXI,WAAa,CAQtBC,UAAW,kBAYXC,0BAA2B,kCAW3BC,0BAA2B,kCAS3BC,cAAe,0BASfC,gBAAiB,4BASjBC,cAAe,0BASfC,sBAAuB,2FAeIC,QAAS,mCAAcR,WAAWC,UAAW,GAAIO,gDAYjC,SAACC,UAAMC,uEAAwBC,wEACtED,iBACAE,OAAOC,sBAAuB,SAG5BC,aAAc,mCAChBd,WAAWE,0BACX,CACIQ,eAAAA,eACAC,gBAAAA,iBAEJF,aAGAC,iBACAE,OAAOC,sBAAuB,GAG3BC,mDAYiC,CAACN,MAAOO,WAAY,mCAC5Df,WAAWG,0BACX,CACIY,QAAAA,SAEJP,MACA,CACIQ,YAAY,UAYPC,oBAAsBC,MAAAA,YAE/BtB,wBAA0B,kBAAU,0BAA2B,UAC/DgB,OAAOO,iBAAiB,eAAgBtB,mBAEjC,mCACHG,WAAWI,cACX,GACAgB,SAASC,eAAeC,WACxB,CACIC,SAAS,EACTC,aAAa,4DAaZC,sBAAwBH,YAEjCV,OAAOc,oBAAoB,eAAgB7B,mBAEpC,mCACHG,WAAWK,gBACX,GACAe,SAASC,eAAeC,WACxB,CACIC,SAAS,EACTC,aAAa,gEAcZG,qBAAuBV,6EAWvBW,uBAAyBH,4FAOjB,CACjBrB,cAAe,0BACfC,gBAAiB,iCAGjBwB,wBAAyB,EACxBA,sCAICC,IAAI,QAAS,qBAAqB,KAGhCV,SAASD,iBAAiBnB,WAAWC,WAAWH,UACtCiC,QAAUC,aAAEC,IAAInC,EAAEoC,QAClBC,YAAcH,aAAEC,IAAInC,EAAEoC,OAAOE,QAAQ,sBAEzCC,OAAOC,KACLC,EAAEC,KAAKC,aAAaC,WACpB,CACIC,OAAQR,YAAYS,aACpBC,UAAWd,QAAQa,kBAM/BxB,SAASD,iBAAiBnB,WAAWE,2BAA2BJ,OACxDA,EAAEgD,OAAOnC,uBAMTb,EAAEY,iBACFE,OAAOC,sBAAuB,SAI5BJ,KAAOuB,aAAEC,IAAInC,EAAEoC,QACrBzB,KAAK6B,KACDC,EAAEC,KAAKO,MAAMC,iBACb,CACIC,cAAexC,KACfE,iBAAiB,IAIrBb,EAAEY,iBACFE,OAAOC,sBAAuB,SAM1CO,SAASD,iBAAiBnB,WAAWG,2BAA2BL,UAGtDoD,YAAcC,gBAAOC,MAAM,kDAE1BtD,EAAEoC,QAAQmB,QAAQH,YAAapD,EAAEgD,OAAO/B,YAGnDc,wBAAyB,gCAWMP,YAAa,mCAC5CtB,WAAWM,cACX,GACAc,SAASC,eAAeC,WACxB,CACIC,SAAS,EACTC,aAAa,yCAYsBF,YAAa,mCACpDtB,WAAWO,sBACX,GACAa,SAASC,eAAeC,WACxB,CACIC,SAAS,EACTC,aAAa"}
\ No newline at end of file
diff --git a/lib/form/amd/src/events.js b/lib/form/amd/src/events.js
index 2cbedb241e04..b5c3b4df82da 100644
--- a/lib/form/amd/src/events.js
+++ b/lib/form/amd/src/events.js
@@ -53,6 +53,7 @@ const changesMadeCheck = e => {
  * @property {String} formFieldValidationFailed See {@link event:core_form/fieldValidationFailed}
  * @property {String} formSubmittedByJavascript See {@link event:core_form/submittedByJavascript}
  * @property {String} uploadChanged See {@link event:core_form/uploadChanged}
+ * @property {String} fieldStructureChanged See {@link event:core_form/fieldStructureChanged}
  */
 export const eventTypes = {
     /**
@@ -113,6 +114,15 @@ export const eventTypes = {
      * @property {HTMLElement} target The form field which was changed
      */
     uploadChanged: 'core_form/uploadChanged',
+
+    /**
+     * An event triggered when a form field structure has changed.
+     *
+     * @event core_form/fieldStructureChanged
+     * @type {CustomEvent}
+     * @property {HTMLElement} target The form field that has changed
+     */
+    fieldStructureChanged: 'core_form/fieldStructureChanged',
 };
 
 // These are only imported for legacy.
@@ -337,3 +347,21 @@ export const notifyUploadChanged = elementId => dispatchEvent(
         cancellable: false,
     }
 );
+
+/**
+ * Trigger an event to notify the field structure has changed.
+ *
+ * @method
+ * @param {string} elementId The element which was changed
+ * @returns {CustomEvent}
+ * @fires fieldStructureChanged
+ */
+export const notifyFieldStructureChanged = elementId => dispatchEvent(
+    eventTypes.fieldStructureChanged,
+    {},
+    document.getElementById(elementId),
+    {
+        bubbles: true,
+        cancellable: false,
+    }
+);
diff --git a/lib/form/filepicker.php b/lib/form/filepicker.php
index e10fd46bf096..8fee6b48acaf 100644
--- a/lib/form/filepicker.php
+++ b/lib/form/filepicker.php
@@ -184,11 +184,10 @@ function toHtml() {
         $html .= "<div><object type='text/html' data='$nonjsfilepicker' height='160' width='600' style='border:1px solid #000'></object></div>";
         $html .= '</noscript>';
 
-        if (!empty($options->accepted_types) && $options->accepted_types != '*') {
+        if (!empty($args->accepted_types) && $args->accepted_types != '*') {
             $html .= html_writer::tag('p', get_string('filesofthesetypes', 'form'));
             $util = new \core_form\filetypes_util();
-            $filetypes = $options->accepted_types;
-            $filetypedescriptions = $util->describe_file_types($filetypes);
+            $filetypedescriptions = $util->describe_file_types($args->accepted_types);
             $html .= $OUTPUT->render_from_template('core_form/filetypes-descriptions', $filetypedescriptions);
         }
 
diff --git a/lib/form/templates/element-group.mustache b/lib/form/templates/element-group.mustache
index 67d7866eeed0..208dd6d0d14a 100644
--- a/lib/form/templates/element-group.mustache
+++ b/lib/form/templates/element-group.mustache
@@ -7,17 +7,27 @@
         {{/element.hiddenlabel}}
     {{/label}}
     {{$element}}
-        <fieldset class="w-100 m-0 p-0 border-0">
-            {{#label}}
+        {{#label}}
+            <fieldset class="w-100 m-0 p-0 border-0">
                 <legend class="sr-only">{{label}}</legend>
-            {{/label}}
-            <div class="d-flex flex-wrap align-items-center">
-            {{#element.elements}}
-                {{{separator}}}
-                {{{html}}}
-            {{/element.elements}}
+                <div class="d-flex flex-wrap align-items-center">
+                {{#element.elements}}
+                    {{{separator}}}
+                    {{{html}}}
+                {{/element.elements}}
+                </div>
+            </fieldset>
+        {{/label}}
+        {{^label}}
+            <div class="w-100 m-0 p-0 border-0">
+                <div class="d-flex flex-wrap align-items-center">
+                {{#element.elements}}
+                    {{{separator}}}
+                    {{{html}}}
+                {{/element.elements}}
+                </div>
             </div>
-        </fieldset>
+        {{/label}}
     {{/element}}
 {{/ core_form/element-template }}
 {{#js}}
diff --git a/lib/moodlelib.php b/lib/moodlelib.php
index 1db650c1cf2f..79053882ceda 100644
--- a/lib/moodlelib.php
+++ b/lib/moodlelib.php
@@ -74,7 +74,6 @@
 // We currently include \core\param manually here to avoid broken upgrades.
 // This may change after the next LTS release as LTS releases require the previous LTS release.
 require_once(__DIR__ . '/classes/deprecation.php');
-require_once(__DIR__ . '/classes/deprecated.php');
 require_once(__DIR__ . '/classes/param.php');
 
 /**
@@ -601,6 +600,21 @@
  */
 define('MAX_PASSWORD_CHARACTERS', 128);
 
+/**
+ * Toggle sensitive feature is disabled. Used for sensitive inputs (passwords, tokens, keys).
+ */
+define('TOGGLE_SENSITIVE_DISABLED', 0);
+
+/**
+ * Toggle sensitive feature is enabled. Used for sensitive inputs (passwords, tokens, keys).
+ */
+define('TOGGLE_SENSITIVE_ENABLED', 1);
+
+/**
+ * Toggle sensitive feature is enabled for small screens only. Used for sensitive inputs (passwords, tokens, keys).
+ */
+define('TOGGLE_SENSITIVE_SMALL_SCREENS_ONLY', 2);
+
 // PARAMETER HANDLING.
 
 /**
diff --git a/lib/openspout/src/Common/Entity/Cell.php b/lib/openspout/src/Common/Entity/Cell.php
index 2cd263f2f029..af76d4de52e8 100644
--- a/lib/openspout/src/Common/Entity/Cell.php
+++ b/lib/openspout/src/Common/Entity/Cell.php
@@ -27,7 +27,7 @@ public function __construct(?Style $style)
         $this->setStyle($style);
     }
 
-    abstract public function getValue(): null|bool|string|int|float|DateTimeInterface|DateInterval;
+    abstract public function getValue(): null|bool|DateInterval|DateTimeInterface|float|int|string;
 
     final public function setStyle(?Style $style): void
     {
@@ -39,7 +39,7 @@ final public function getStyle(): Style
         return $this->style;
     }
 
-    final public static function fromValue(null|bool|string|int|float|DateTimeInterface|DateInterval $value, ?Style $style = null): self
+    final public static function fromValue(null|bool|DateInterval|DateTimeInterface|float|int|string $value, ?Style $style = null): self
     {
         if (\is_bool($value)) {
             return new BooleanCell($value, $style);
@@ -57,7 +57,7 @@ final public static function fromValue(null|bool|string|int|float|DateTimeInterf
             return new DateIntervalCell($value, $style);
         }
         if (isset($value[0]) && '=' === $value[0]) {
-            return new FormulaCell($value, $style);
+            return new FormulaCell($value, $style, null);
         }
 
         return new StringCell($value, $style);
diff --git a/lib/openspout/src/Common/Entity/Cell/BooleanCell.php b/lib/openspout/src/Common/Entity/Cell/BooleanCell.php
index 120a72b8a00e..ecba8e8c07ec 100644
--- a/lib/openspout/src/Common/Entity/Cell/BooleanCell.php
+++ b/lib/openspout/src/Common/Entity/Cell/BooleanCell.php
@@ -9,7 +9,7 @@
 
 final class BooleanCell extends Cell
 {
-    private bool $value;
+    private readonly bool $value;
 
     public function __construct(bool $value, ?Style $style)
     {
diff --git a/lib/openspout/src/Common/Entity/Cell/DateIntervalCell.php b/lib/openspout/src/Common/Entity/Cell/DateIntervalCell.php
index 75b5eaf5916b..65d30861d965 100644
--- a/lib/openspout/src/Common/Entity/Cell/DateIntervalCell.php
+++ b/lib/openspout/src/Common/Entity/Cell/DateIntervalCell.php
@@ -10,8 +10,14 @@
 
 final class DateIntervalCell extends Cell
 {
-    private DateInterval $value;
+    private readonly DateInterval $value;
 
+    /**
+     * For Excel make sure to set a format onto the style (Style::setFormat()) with the left most unit enclosed with
+     *   brackets: '[h]:mm', '[hh]:mm:ss', '[m]:ss', '[s]', etc.
+     * This makes sure excel knows what to do with the remaining time that exceeds this unit. Without brackets Excel
+     *   will interpret the value as date time and not duration if it is greater or equal 1.
+     */
     public function __construct(DateInterval $value, ?Style $style)
     {
         $this->value = $value;
diff --git a/lib/openspout/src/Common/Entity/Cell/DateTimeCell.php b/lib/openspout/src/Common/Entity/Cell/DateTimeCell.php
index 7065abf5445d..bced40060a69 100644
--- a/lib/openspout/src/Common/Entity/Cell/DateTimeCell.php
+++ b/lib/openspout/src/Common/Entity/Cell/DateTimeCell.php
@@ -10,7 +10,7 @@
 
 final class DateTimeCell extends Cell
 {
-    private DateTimeInterface $value;
+    private readonly DateTimeInterface $value;
 
     public function __construct(DateTimeInterface $value, ?Style $style)
     {
diff --git a/lib/openspout/src/Common/Entity/Cell/EmptyCell.php b/lib/openspout/src/Common/Entity/Cell/EmptyCell.php
index 8d3e41399c40..72678b961231 100644
--- a/lib/openspout/src/Common/Entity/Cell/EmptyCell.php
+++ b/lib/openspout/src/Common/Entity/Cell/EmptyCell.php
@@ -9,7 +9,7 @@
 
 final class EmptyCell extends Cell
 {
-    private ?string $value;
+    private readonly ?string $value;
 
     public function __construct(?string $value, ?Style $style)
     {
diff --git a/lib/openspout/src/Common/Entity/Cell/ErrorCell.php b/lib/openspout/src/Common/Entity/Cell/ErrorCell.php
index 2c1d677bd999..53a445e98553 100644
--- a/lib/openspout/src/Common/Entity/Cell/ErrorCell.php
+++ b/lib/openspout/src/Common/Entity/Cell/ErrorCell.php
@@ -9,7 +9,7 @@
 
 final class ErrorCell extends Cell
 {
-    private string $value;
+    private readonly string $value;
 
     public function __construct(string $value, ?Style $style)
     {
diff --git a/lib/openspout/src/Common/Entity/Cell/FormulaCell.php b/lib/openspout/src/Common/Entity/Cell/FormulaCell.php
index 97daa838cb61..2e07a96c647f 100644
--- a/lib/openspout/src/Common/Entity/Cell/FormulaCell.php
+++ b/lib/openspout/src/Common/Entity/Cell/FormulaCell.php
@@ -4,16 +4,18 @@
 
 namespace OpenSpout\Common\Entity\Cell;
 
+use DateInterval;
+use DateTimeImmutable;
 use OpenSpout\Common\Entity\Cell;
 use OpenSpout\Common\Entity\Style\Style;
 
 final class FormulaCell extends Cell
 {
-    private string $value;
-
-    public function __construct(string $value, ?Style $style)
-    {
-        $this->value = $value;
+    public function __construct(
+        private readonly string $value,
+        ?Style $style,
+        private readonly null|DateInterval|DateTimeImmutable|float|int|string $computedValue = null,
+    ) {
         parent::__construct($style);
     }
 
@@ -21,4 +23,9 @@ public function getValue(): string
     {
         return $this->value;
     }
+
+    public function getComputedValue(): null|DateInterval|DateTimeImmutable|float|int|string
+    {
+        return $this->computedValue;
+    }
 }
diff --git a/lib/openspout/src/Common/Entity/Cell/NumericCell.php b/lib/openspout/src/Common/Entity/Cell/NumericCell.php
index 810fe1113d55..ee5d0eaae4e7 100644
--- a/lib/openspout/src/Common/Entity/Cell/NumericCell.php
+++ b/lib/openspout/src/Common/Entity/Cell/NumericCell.php
@@ -9,15 +9,15 @@
 
 final class NumericCell extends Cell
 {
-    private int|float $value;
+    private readonly float|int $value;
 
-    public function __construct(int|float $value, ?Style $style)
+    public function __construct(float|int $value, ?Style $style)
     {
         $this->value = $value;
         parent::__construct($style);
     }
 
-    public function getValue(): int|float
+    public function getValue(): float|int
     {
         return $this->value;
     }
diff --git a/lib/openspout/src/Common/Entity/Cell/StringCell.php b/lib/openspout/src/Common/Entity/Cell/StringCell.php
index 94ffa8fa6d2d..85397945847a 100644
--- a/lib/openspout/src/Common/Entity/Cell/StringCell.php
+++ b/lib/openspout/src/Common/Entity/Cell/StringCell.php
@@ -9,7 +9,7 @@
 
 final class StringCell extends Cell
 {
-    private string $value;
+    private readonly string $value;
 
     public function __construct(string $value, ?Style $style)
     {
diff --git a/lib/openspout/src/Common/Entity/Row.php b/lib/openspout/src/Common/Entity/Row.php
index 6443ea19bf71..5715b9f959df 100644
--- a/lib/openspout/src/Common/Entity/Row.php
+++ b/lib/openspout/src/Common/Entity/Row.php
@@ -41,7 +41,7 @@ public function __construct(array $cells, ?Style $style = null)
      */
     public static function fromValues(array $cellValues = [], ?Style $rowStyle = null): self
     {
-        $cells = array_map(static function (null|bool|string|int|float|DateTimeInterface|DateInterval $cellValue): Cell {
+        $cells = array_map(static function (null|bool|DateInterval|DateTimeInterface|float|int|string $cellValue): Cell {
             return Cell::fromValue($cellValue);
         }, $cellValues);
 
@@ -134,7 +134,7 @@ public function getHeight(): float
      */
     public function toArray(): array
     {
-        return array_map(static function (Cell $cell): null|bool|string|int|float|DateTimeInterface|DateInterval {
+        return array_map(static function (Cell $cell): null|bool|DateInterval|DateTimeInterface|float|int|string {
             return $cell->getValue();
         }, $this->cells);
     }
diff --git a/lib/openspout/src/Common/Entity/Style/BorderPart.php b/lib/openspout/src/Common/Entity/Style/BorderPart.php
index e5819e36362d..8bd9a1abbddb 100644
--- a/lib/openspout/src/Common/Entity/Style/BorderPart.php
+++ b/lib/openspout/src/Common/Entity/Style/BorderPart.php
@@ -31,10 +31,10 @@ final class BorderPart
         Border::WIDTH_THICK,
     ];
 
-    private string $style;
-    private string $name;
-    private string $color;
-    private string $width;
+    private readonly string $style;
+    private readonly string $name;
+    private readonly string $color;
+    private readonly string $width;
 
     /**
      * @param string $name  @see  BorderPart::allowedNames
diff --git a/lib/openspout/src/Common/Entity/Style/Color.php b/lib/openspout/src/Common/Entity/Style/Color.php
index 4dd5e3e1b480..e4ee1e7026a2 100644
--- a/lib/openspout/src/Common/Entity/Style/Color.php
+++ b/lib/openspout/src/Common/Entity/Style/Color.php
@@ -65,7 +65,7 @@ public static function toARGB(string $rgbColor): string
     /**
      * Throws an exception is the color component value is outside of bounds (0 - 255).
      *
-     * @throws \OpenSpout\Common\Exception\InvalidColorException
+     * @throws InvalidColorException
      */
     private static function throwIfInvalidColorComponentValue(int $colorComponent): void
     {
diff --git a/lib/openspout/src/Common/Exception/EncodingConversionException.php b/lib/openspout/src/Common/Exception/EncodingConversionException.php
index 0a0fce8847bd..d08d0ba3af07 100644
--- a/lib/openspout/src/Common/Exception/EncodingConversionException.php
+++ b/lib/openspout/src/Common/Exception/EncodingConversionException.php
@@ -4,6 +4,4 @@
 
 namespace OpenSpout\Common\Exception;
 
-final class EncodingConversionException extends OpenSpoutException
-{
-}
+final class EncodingConversionException extends OpenSpoutException {}
diff --git a/lib/openspout/src/Common/Exception/IOException.php b/lib/openspout/src/Common/Exception/IOException.php
index b452091e6270..3e5154a75960 100644
--- a/lib/openspout/src/Common/Exception/IOException.php
+++ b/lib/openspout/src/Common/Exception/IOException.php
@@ -4,6 +4,4 @@
 
 namespace OpenSpout\Common\Exception;
 
-final class IOException extends OpenSpoutException
-{
-}
+final class IOException extends OpenSpoutException {}
diff --git a/lib/openspout/src/Common/Exception/InvalidArgumentException.php b/lib/openspout/src/Common/Exception/InvalidArgumentException.php
index 231881ad8adf..6241a1de2c41 100644
--- a/lib/openspout/src/Common/Exception/InvalidArgumentException.php
+++ b/lib/openspout/src/Common/Exception/InvalidArgumentException.php
@@ -4,6 +4,4 @@
 
 namespace OpenSpout\Common\Exception;
 
-final class InvalidArgumentException extends OpenSpoutException
-{
-}
+final class InvalidArgumentException extends OpenSpoutException {}
diff --git a/lib/openspout/src/Common/Exception/InvalidColorException.php b/lib/openspout/src/Common/Exception/InvalidColorException.php
index 98882adec5c0..0983024bafe3 100644
--- a/lib/openspout/src/Common/Exception/InvalidColorException.php
+++ b/lib/openspout/src/Common/Exception/InvalidColorException.php
@@ -4,6 +4,4 @@
 
 namespace OpenSpout\Common\Exception;
 
-final class InvalidColorException extends OpenSpoutException
-{
-}
+final class InvalidColorException extends OpenSpoutException {}
diff --git a/lib/openspout/src/Common/Exception/OpenSpoutException.php b/lib/openspout/src/Common/Exception/OpenSpoutException.php
index 9a4596ebe3ec..3753525f1116 100644
--- a/lib/openspout/src/Common/Exception/OpenSpoutException.php
+++ b/lib/openspout/src/Common/Exception/OpenSpoutException.php
@@ -6,6 +6,4 @@
 
 use Exception;
 
-abstract class OpenSpoutException extends Exception
-{
-}
+abstract class OpenSpoutException extends Exception {}
diff --git a/lib/openspout/src/Common/Exception/UnsupportedTypeException.php b/lib/openspout/src/Common/Exception/UnsupportedTypeException.php
index bcae72183007..f8d71452b4be 100644
--- a/lib/openspout/src/Common/Exception/UnsupportedTypeException.php
+++ b/lib/openspout/src/Common/Exception/UnsupportedTypeException.php
@@ -4,6 +4,4 @@
 
 namespace OpenSpout\Common\Exception;
 
-final class UnsupportedTypeException extends OpenSpoutException
-{
-}
+final class UnsupportedTypeException extends OpenSpoutException {}
diff --git a/lib/openspout/src/Common/Helper/EncodingHelper.php b/lib/openspout/src/Common/Helper/EncodingHelper.php
index d1fc51f1d9ec..82de24492266 100644
--- a/lib/openspout/src/Common/Helper/EncodingHelper.php
+++ b/lib/openspout/src/Common/Helper/EncodingHelper.php
@@ -33,9 +33,9 @@ final class EncodingHelper
     /** @var array<string, string> Map representing the encodings supporting BOMs (key) and their associated BOM (value) */
     private array $supportedEncodingsWithBom;
 
-    private bool $canUseIconv;
+    private readonly bool $canUseIconv;
 
-    private bool $canUseMbString;
+    private readonly bool $canUseMbString;
 
     public function __construct(bool $canUseIconv, bool $canUseMbString)
     {
@@ -89,7 +89,7 @@ public function getBytesOffsetToSkipBOM($filePointer, string $encoding): int
      *
      * @return string The converted, UTF-8 string
      *
-     * @throws \OpenSpout\Common\Exception\EncodingConversionException If conversion is not supported or if the conversion failed
+     * @throws EncodingConversionException If conversion is not supported or if the conversion failed
      */
     public function attemptConversionToUTF8(?string $string, string $sourceEncoding): ?string
     {
@@ -104,7 +104,7 @@ public function attemptConversionToUTF8(?string $string, string $sourceEncoding)
      *
      * @return string The converted string, encoded with the given encoding
      *
-     * @throws \OpenSpout\Common\Exception\EncodingConversionException If conversion is not supported or if the conversion failed
+     * @throws EncodingConversionException If conversion is not supported or if the conversion failed
      */
     public function attemptConversionFromUTF8(?string $string, string $targetEncoding): ?string
     {
@@ -145,7 +145,7 @@ private function hasBOM($filePointer, string $encoding): bool
      *
      * @return string The converted string, encoded with the given encoding
      *
-     * @throws \OpenSpout\Common\Exception\EncodingConversionException If conversion is not supported or if the conversion failed
+     * @throws EncodingConversionException If conversion is not supported or if the conversion failed
      */
     private function attemptConversion(?string $string, string $sourceEncoding, string $targetEncoding): ?string
     {
diff --git a/lib/openspout/src/Common/Helper/Escaper/XLSX.php b/lib/openspout/src/Common/Helper/Escaper/XLSX.php
index 130ee5f4973b..059b7d9bdc76 100644
--- a/lib/openspout/src/Common/Helper/Escaper/XLSX.php
+++ b/lib/openspout/src/Common/Helper/Escaper/XLSX.php
@@ -33,6 +33,7 @@ public function escape(string $string): string
         $this->initIfNeeded();
 
         $escapedString = $this->escapeControlCharacters($string);
+
         // @NOTE: Using ENT_QUOTES as XML entities ('<', '>', '&') as well as
         //        single/double quotes (for XML attributes) need to be encoded.
         return htmlspecialchars($escapedString, ENT_QUOTES, 'UTF-8');
diff --git a/lib/openspout/src/Common/Helper/FileSystemHelper.php b/lib/openspout/src/Common/Helper/FileSystemHelper.php
index 0fb223bb2747..2309bfe68e21 100644
--- a/lib/openspout/src/Common/Helper/FileSystemHelper.php
+++ b/lib/openspout/src/Common/Helper/FileSystemHelper.php
@@ -14,7 +14,7 @@
 final class FileSystemHelper implements FileSystemHelperInterface
 {
     /** @var string Real path of the base folder where all the I/O can occur */
-    private string $baseFolderRealPath;
+    private readonly string $baseFolderRealPath;
 
     /**
      * @param string $baseFolderPath The path of the base folder where all the I/O can occur
@@ -39,7 +39,7 @@ public function getBaseFolderRealPath(): string
      *
      * @return string Path of the created folder
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the folder or if the folder path is not inside of the base folder
+     * @throws IOException If unable to create the folder or if the folder path is not inside of the base folder
      */
     public function createFolder(string $parentFolderPath, string $folderName): string
     {
@@ -73,7 +73,7 @@ public function createFolder(string $parentFolderPath, string $folderName): stri
      *
      * @return string Path of the created file
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the file or if the file path is not inside of the base folder
+     * @throws IOException If unable to create the file or if the file path is not inside of the base folder
      */
     public function createFileWithContents(string $parentFolderPath, string $fileName, string $fileContents): string
     {
@@ -102,7 +102,7 @@ public function createFileWithContents(string $parentFolderPath, string $fileNam
      *
      * @param string $filePath Path of the file to delete
      *
-     * @throws \OpenSpout\Common\Exception\IOException If the file path is not inside of the base folder
+     * @throws IOException If the file path is not inside of the base folder
      */
     public function deleteFile(string $filePath): void
     {
@@ -118,7 +118,7 @@ public function deleteFile(string $filePath): void
      *
      * @param string $folderPath Path of the folder to delete
      *
-     * @throws \OpenSpout\Common\Exception\IOException If the folder path is not inside of the base folder
+     * @throws IOException If the folder path is not inside of the base folder
      */
     public function deleteFolderRecursively(string $folderPath): void
     {
@@ -147,8 +147,8 @@ public function deleteFolderRecursively(string $folderPath): void
      *
      * @param string $operationFolderPath The path of the folder where the I/O operation should occur
      *
-     * @throws \OpenSpout\Common\Exception\IOException If the folder where the I/O operation should occur
-     *                                                 is not inside the base folder or the base folder does not exist
+     * @throws IOException If the folder where the I/O operation should occur
+     *                     is not inside the base folder or the base folder does not exist
      */
     private function throwIfOperationNotInBaseFolder(string $operationFolderPath): void
     {
diff --git a/lib/openspout/src/Common/Helper/FileSystemHelperInterface.php b/lib/openspout/src/Common/Helper/FileSystemHelperInterface.php
index a6d12d89fa6f..390346e39a09 100644
--- a/lib/openspout/src/Common/Helper/FileSystemHelperInterface.php
+++ b/lib/openspout/src/Common/Helper/FileSystemHelperInterface.php
@@ -4,6 +4,8 @@
 
 namespace OpenSpout\Common\Helper;
 
+use OpenSpout\Common\Exception\IOException;
+
 /**
  * @internal
  */
@@ -17,7 +19,7 @@ interface FileSystemHelperInterface
      *
      * @return string Path of the created folder
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the folder or if the folder path is not inside of the base folder
+     * @throws IOException If unable to create the folder or if the folder path is not inside of the base folder
      */
     public function createFolder(string $parentFolderPath, string $folderName): string;
 
@@ -31,7 +33,7 @@ public function createFolder(string $parentFolderPath, string $folderName): stri
      *
      * @return string Path of the created file
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the file or if the file path is not inside of the base folder
+     * @throws IOException If unable to create the file or if the file path is not inside of the base folder
      */
     public function createFileWithContents(string $parentFolderPath, string $fileName, string $fileContents): string;
 
@@ -40,7 +42,7 @@ public function createFileWithContents(string $parentFolderPath, string $fileNam
      *
      * @param string $filePath Path of the file to delete
      *
-     * @throws \OpenSpout\Common\Exception\IOException If the file path is not inside of the base folder
+     * @throws IOException If the file path is not inside of the base folder
      */
     public function deleteFile(string $filePath): void;
 
@@ -49,7 +51,7 @@ public function deleteFile(string $filePath): void;
      *
      * @param string $folderPath Path of the folder to delete
      *
-     * @throws \OpenSpout\Common\Exception\IOException If the folder path is not inside of the base folder
+     * @throws IOException If the folder path is not inside of the base folder
      */
     public function deleteFolderRecursively(string $folderPath): void;
 }
diff --git a/lib/openspout/src/Common/Helper/StringHelper.php b/lib/openspout/src/Common/Helper/StringHelper.php
index dfc6d56d7f91..fb5bada0a5e0 100644
--- a/lib/openspout/src/Common/Helper/StringHelper.php
+++ b/lib/openspout/src/Common/Helper/StringHelper.php
@@ -10,7 +10,7 @@
 final class StringHelper
 {
     /** @var bool Whether the mbstring extension is loaded */
-    private bool $hasMbstringSupport;
+    private readonly bool $hasMbstringSupport;
 
     public function __construct(bool $hasMbstringSupport)
     {
diff --git a/lib/openspout/src/Reader/AbstractReader.php b/lib/openspout/src/Reader/AbstractReader.php
index 3afa0cef6b00..3582345f58eb 100644
--- a/lib/openspout/src/Reader/AbstractReader.php
+++ b/lib/openspout/src/Reader/AbstractReader.php
@@ -24,7 +24,7 @@ abstract class AbstractReader implements ReaderInterface
      *
      * @param string $filePath Path of the file to be read
      *
-     * @throws \OpenSpout\Common\Exception\IOException If the file at the given path does not exist, is not readable or is corrupted
+     * @throws IOException If the file at the given path does not exist, is not readable or is corrupted
      */
     public function open(string $filePath): void
     {
diff --git a/lib/openspout/src/Reader/CSV/Reader.php b/lib/openspout/src/Reader/CSV/Reader.php
index ac92b53e2aa3..f455dbbbf05c 100644
--- a/lib/openspout/src/Reader/CSV/Reader.php
+++ b/lib/openspout/src/Reader/CSV/Reader.php
@@ -4,6 +4,7 @@
 
 namespace OpenSpout\Reader\CSV;
 
+use OpenSpout\Common\Exception\IOException;
 use OpenSpout\Common\Helper\EncodingHelper;
 use OpenSpout\Reader\AbstractReader;
 
@@ -18,14 +19,8 @@ final class Reader extends AbstractReader
     /** @var SheetIterator To iterator over the CSV unique "sheet" */
     private SheetIterator $sheetIterator;
 
-    /** @var string Original value for the "auto_detect_line_endings" INI value */
-    private string $originalAutoDetectLineEndings;
-
-    /** @var bool Whether the code is running with PHP >= 8.1 */
-    private bool $isRunningAtLeastPhp81;
-
-    private Options $options;
-    private EncodingHelper $encodingHelper;
+    private readonly Options $options;
+    private readonly EncodingHelper $encodingHelper;
 
     public function __construct(
         ?Options $options = null,
@@ -33,7 +28,6 @@ public function __construct(
     ) {
         $this->options = $options ?? new Options();
         $this->encodingHelper = $encodingHelper ?? EncodingHelper::factory();
-        $this->isRunningAtLeastPhp81 = \PHP_VERSION_ID >= 80100;
     }
 
     public function getSheetIterator(): SheetIterator
@@ -57,20 +51,10 @@ protected function doesSupportStreamWrapper(): bool
      *
      * @param string $filePath Path of the CSV file to be read
      *
-     * @throws \OpenSpout\Common\Exception\IOException
+     * @throws IOException
      */
     protected function openReader(string $filePath): void
     {
-        // "auto_detect_line_endings" is deprecated in PHP 8.1
-        if (!$this->isRunningAtLeastPhp81) {
-            // @codeCoverageIgnoreStart
-            $originalAutoDetectLineEndings = \ini_get('auto_detect_line_endings');
-            \assert(false !== $originalAutoDetectLineEndings);
-            $this->originalAutoDetectLineEndings = $originalAutoDetectLineEndings;
-            ini_set('auto_detect_line_endings', '1');
-            // @codeCoverageIgnoreEnd
-        }
-
         $resource = fopen($filePath, 'r');
         \assert(false !== $resource);
         $this->filePointer = $resource;
@@ -92,12 +76,5 @@ protected function openReader(string $filePath): void
     protected function closeReader(): void
     {
         fclose($this->filePointer);
-
-        // "auto_detect_line_endings" is deprecated in PHP 8.1
-        if (!$this->isRunningAtLeastPhp81) {
-            // @codeCoverageIgnoreStart
-            ini_set('auto_detect_line_endings', $this->originalAutoDetectLineEndings);
-            // @codeCoverageIgnoreEnd
-        }
     }
 }
diff --git a/lib/openspout/src/Reader/CSV/RowIterator.php b/lib/openspout/src/Reader/CSV/RowIterator.php
index 88b7c00cc9b7..81f50bd7a3d1 100644
--- a/lib/openspout/src/Reader/CSV/RowIterator.php
+++ b/lib/openspout/src/Reader/CSV/RowIterator.php
@@ -6,6 +6,7 @@
 
 use OpenSpout\Common\Entity\Cell;
 use OpenSpout\Common\Entity\Row;
+use OpenSpout\Common\Exception\EncodingConversionException;
 use OpenSpout\Common\Helper\EncodingHelper;
 use OpenSpout\Reader\RowIteratorInterface;
 
@@ -26,15 +27,15 @@ final class RowIterator implements RowIteratorInterface
     private int $numReadRows = 0;
 
     /** @var null|Row Buffer used to store the current row, while checking if there are more rows to read */
-    private ?Row $rowBuffer;
+    private ?Row $rowBuffer = null;
 
     /** @var bool Indicates whether all rows have been read */
     private bool $hasReachedEndOfFile = false;
 
-    private Options $options;
+    private readonly Options $options;
 
     /** @var EncodingHelper Helper to work with different encodings */
-    private EncodingHelper $encodingHelper;
+    private readonly EncodingHelper $encodingHelper;
 
     /**
      * @param resource $filePointer Pointer to the CSV file to read
@@ -79,7 +80,7 @@ public function valid(): bool
      *
      * @see http://php.net/manual/en/iterator.next.php
      *
-     * @throws \OpenSpout\Common\Exception\EncodingConversionException If unable to convert data to UTF-8
+     * @throws EncodingConversionException If unable to convert data to UTF-8
      */
     public function next(): void
     {
@@ -123,7 +124,7 @@ private function rewindAndSkipBom(): void
     }
 
     /**
-     * @throws \OpenSpout\Common\Exception\EncodingConversionException If unable to convert data to UTF-8
+     * @throws EncodingConversionException If unable to convert data to UTF-8
      */
     private function readDataForNextRow(): void
     {
@@ -168,7 +169,7 @@ private function shouldReadNextRow($currentRowData): bool
      *
      * @return array<int, null|string>|false The row for the current file pointer, encoded in UTF-8 or FALSE if nothing to read
      *
-     * @throws \OpenSpout\Common\Exception\EncodingConversionException If unable to convert data to UTF-8
+     * @throws EncodingConversionException If unable to convert data to UTF-8
      */
     private function getNextUTF8EncodedRow(): array|false
     {
diff --git a/lib/openspout/src/Reader/CSV/Sheet.php b/lib/openspout/src/Reader/CSV/Sheet.php
index f4e1be1c6979..142e6255e206 100644
--- a/lib/openspout/src/Reader/CSV/Sheet.php
+++ b/lib/openspout/src/Reader/CSV/Sheet.php
@@ -12,7 +12,7 @@
 final class Sheet implements SheetInterface
 {
     /** @var RowIterator To iterate over the CSV's rows */
-    private RowIterator $rowIterator;
+    private readonly RowIterator $rowIterator;
 
     /**
      * @param RowIterator $rowIterator Corresponding row iterator
diff --git a/lib/openspout/src/Reader/CSV/SheetIterator.php b/lib/openspout/src/Reader/CSV/SheetIterator.php
index 7bba3aa09b63..5a2b9153e2d4 100644
--- a/lib/openspout/src/Reader/CSV/SheetIterator.php
+++ b/lib/openspout/src/Reader/CSV/SheetIterator.php
@@ -12,7 +12,7 @@
 final class SheetIterator implements SheetIteratorInterface
 {
     /** @var Sheet The CSV unique "sheet" */
-    private Sheet $sheet;
+    private readonly Sheet $sheet;
 
     /** @var bool Whether the unique "sheet" has already been read */
     private bool $hasReadUniqueSheet = false;
diff --git a/lib/openspout/src/Reader/Common/ColumnWidth.php b/lib/openspout/src/Reader/Common/ColumnWidth.php
index 1350a10e2ead..73ecb627a5a4 100644
--- a/lib/openspout/src/Reader/Common/ColumnWidth.php
+++ b/lib/openspout/src/Reader/Common/ColumnWidth.php
@@ -14,9 +14,8 @@ final class ColumnWidth
      * @param positive-int $end
      */
     public function __construct(
-        public int $start,
-        public int $end,
-        public float $width,
-    ) {
-    }
+        public readonly int $start,
+        public readonly int $end,
+        public readonly float $width,
+    ) {}
 }
diff --git a/lib/openspout/src/Reader/Common/Creator/ReaderFactory.php b/lib/openspout/src/Reader/Common/Creator/ReaderFactory.php
index c72bcfa4b91b..f769f48994a0 100644
--- a/lib/openspout/src/Reader/Common/Creator/ReaderFactory.php
+++ b/lib/openspout/src/Reader/Common/Creator/ReaderFactory.php
@@ -14,6 +14,8 @@
 /**
  * This factory is used to create readers, based on the type of the file to be read.
  * It supports CSV, XLSX and ODS formats.
+ *
+ * @deprecated Guessing mechanisms are brittle by nature and won't be provided by this library anymore
  */
 final class ReaderFactory
 {
@@ -22,7 +24,7 @@ final class ReaderFactory
      *
      * @param string $path The path to the spreadsheet file. Supported extensions are .csv,.ods and .xlsx
      *
-     * @throws \OpenSpout\Common\Exception\UnsupportedTypeException
+     * @throws UnsupportedTypeException
      */
     public static function createFromFile(string $path): ReaderInterface
     {
@@ -41,8 +43,8 @@ public static function createFromFile(string $path): ReaderInterface
      *
      * @param string $path the path to the spreadsheet file
      *
-     * @throws \OpenSpout\Common\Exception\UnsupportedTypeException
-     * @throws \OpenSpout\Common\Exception\IOException
+     * @throws UnsupportedTypeException
+     * @throws IOException
      */
     public static function createFromFileByMimeType(string $path): ReaderInterface
     {
diff --git a/lib/openspout/src/Reader/Common/XMLProcessor.php b/lib/openspout/src/Reader/Common/XMLProcessor.php
index 85dff666eba1..b185ad6e6ddb 100644
--- a/lib/openspout/src/Reader/Common/XMLProcessor.php
+++ b/lib/openspout/src/Reader/Common/XMLProcessor.php
@@ -4,6 +4,7 @@
 
 namespace OpenSpout\Reader\Common;
 
+use OpenSpout\Reader\Exception\XMLProcessingException;
 use OpenSpout\Reader\Wrapper\XMLReader;
 use ReflectionMethod;
 
@@ -25,7 +26,7 @@ final class XMLProcessor
     public const PROCESSING_STOP = 2;
 
     /** @var XMLReader The XMLReader object that will help read sheet's XML data */
-    private XMLReader $xmlReader;
+    private readonly XMLReader $xmlReader;
 
     /** @var array<string, array{reflectionMethod: ReflectionMethod, reflectionObject: object}> Registered callbacks */
     private array $callbacks = [];
@@ -55,7 +56,7 @@ public function registerCallback(string $nodeName, int $nodeType, $callback): se
      * Resumes the reading of the XML file where it was left off.
      * Stops whenever a callback indicates that reading should stop or at the end of the file.
      *
-     * @throws \OpenSpout\Reader\Exception\XMLProcessingException
+     * @throws XMLProcessingException
      */
     public function readUntilStopped(): void
     {
diff --git a/lib/openspout/src/Reader/Exception/InvalidValueException.php b/lib/openspout/src/Reader/Exception/InvalidValueException.php
index 3f5c4b042152..4475e512ea97 100644
--- a/lib/openspout/src/Reader/Exception/InvalidValueException.php
+++ b/lib/openspout/src/Reader/Exception/InvalidValueException.php
@@ -8,7 +8,7 @@
 
 final class InvalidValueException extends ReaderException
 {
-    private string $invalidValue;
+    private readonly string $invalidValue;
 
     public function __construct(string $invalidValue, string $message = '', int $code = 0, ?Throwable $previous = null)
     {
diff --git a/lib/openspout/src/Reader/Exception/IteratorNotRewindableException.php b/lib/openspout/src/Reader/Exception/IteratorNotRewindableException.php
index 80bff913fbd9..b1d5198d0786 100644
--- a/lib/openspout/src/Reader/Exception/IteratorNotRewindableException.php
+++ b/lib/openspout/src/Reader/Exception/IteratorNotRewindableException.php
@@ -4,6 +4,4 @@
 
 namespace OpenSpout\Reader\Exception;
 
-final class IteratorNotRewindableException extends ReaderException
-{
-}
+final class IteratorNotRewindableException extends ReaderException {}
diff --git a/lib/openspout/src/Reader/Exception/NoSheetsFoundException.php b/lib/openspout/src/Reader/Exception/NoSheetsFoundException.php
index b240b3dee738..3844c246a804 100644
--- a/lib/openspout/src/Reader/Exception/NoSheetsFoundException.php
+++ b/lib/openspout/src/Reader/Exception/NoSheetsFoundException.php
@@ -4,6 +4,4 @@
 
 namespace OpenSpout\Reader\Exception;
 
-final class NoSheetsFoundException extends ReaderException
-{
-}
+final class NoSheetsFoundException extends ReaderException {}
diff --git a/lib/openspout/src/Reader/Exception/ReaderException.php b/lib/openspout/src/Reader/Exception/ReaderException.php
index 676158904c93..9f5433a66d91 100644
--- a/lib/openspout/src/Reader/Exception/ReaderException.php
+++ b/lib/openspout/src/Reader/Exception/ReaderException.php
@@ -6,6 +6,4 @@
 
 use OpenSpout\Common\Exception\OpenSpoutException;
 
-abstract class ReaderException extends OpenSpoutException
-{
-}
+abstract class ReaderException extends OpenSpoutException {}
diff --git a/lib/openspout/src/Reader/Exception/ReaderNotOpenedException.php b/lib/openspout/src/Reader/Exception/ReaderNotOpenedException.php
index 913cb21aeb95..8cd2303244fb 100644
--- a/lib/openspout/src/Reader/Exception/ReaderNotOpenedException.php
+++ b/lib/openspout/src/Reader/Exception/ReaderNotOpenedException.php
@@ -4,6 +4,4 @@
 
 namespace OpenSpout\Reader\Exception;
 
-final class ReaderNotOpenedException extends ReaderException
-{
-}
+final class ReaderNotOpenedException extends ReaderException {}
diff --git a/lib/openspout/src/Reader/Exception/SharedStringNotFoundException.php b/lib/openspout/src/Reader/Exception/SharedStringNotFoundException.php
index 0f50ac69ffa7..3f8337565b97 100644
--- a/lib/openspout/src/Reader/Exception/SharedStringNotFoundException.php
+++ b/lib/openspout/src/Reader/Exception/SharedStringNotFoundException.php
@@ -4,6 +4,4 @@
 
 namespace OpenSpout\Reader\Exception;
 
-final class SharedStringNotFoundException extends ReaderException
-{
-}
+final class SharedStringNotFoundException extends ReaderException {}
diff --git a/lib/openspout/src/Reader/Exception/XMLProcessingException.php b/lib/openspout/src/Reader/Exception/XMLProcessingException.php
index bd7d1b9ea767..e4864f725ac2 100644
--- a/lib/openspout/src/Reader/Exception/XMLProcessingException.php
+++ b/lib/openspout/src/Reader/Exception/XMLProcessingException.php
@@ -4,6 +4,4 @@
 
 namespace OpenSpout\Reader\Exception;
 
-final class XMLProcessingException extends ReaderException
-{
-}
+final class XMLProcessingException extends ReaderException {}
diff --git a/lib/openspout/src/Reader/ODS/Helper/CellValueFormatter.php b/lib/openspout/src/Reader/ODS/Helper/CellValueFormatter.php
index 3202e6e2c7be..f525a471bcc0 100644
--- a/lib/openspout/src/Reader/ODS/Helper/CellValueFormatter.php
+++ b/lib/openspout/src/Reader/ODS/Helper/CellValueFormatter.php
@@ -61,10 +61,10 @@ final class CellValueFormatter
     ];
 
     /** @var bool Whether date/time values should be returned as PHP objects or be formatted as strings */
-    private bool $shouldFormatDates;
+    private readonly bool $shouldFormatDates;
 
     /** @var ODS Used to unescape XML data */
-    private ODS $escaper;
+    private readonly ODS $escaper;
 
     /**
      * @param bool $shouldFormatDates Whether date/time values should be returned as PHP objects or be formatted as strings
@@ -150,7 +150,7 @@ private function formatBooleanCellValue(DOMElement $node): bool
      *
      * @throws InvalidValueException If the value is not a valid date
      */
-    private function formatDateCellValue(DOMElement $node): string|DateTimeImmutable
+    private function formatDateCellValue(DOMElement $node): DateTimeImmutable|string
     {
         // The XML node looks like this:
         // <table:table-cell calcext:value-type="date" office:date-value="2016-05-19T16:39:00" office:value-type="date">
diff --git a/lib/openspout/src/Reader/ODS/Helper/SettingsHelper.php b/lib/openspout/src/Reader/ODS/Helper/SettingsHelper.php
index 9925e88a08f7..a3c9b9a714a6 100644
--- a/lib/openspout/src/Reader/ODS/Helper/SettingsHelper.php
+++ b/lib/openspout/src/Reader/ODS/Helper/SettingsHelper.php
@@ -43,7 +43,7 @@ public function getActiveSheetName(string $filePath): ?string
                     break;
                 }
             }
-        } catch (XMLProcessingException $exception) {  // @codeCoverageIgnore
+        } catch (XMLProcessingException) {  // @codeCoverageIgnore
             // do nothing
         }
 
diff --git a/lib/openspout/src/Reader/ODS/Reader.php b/lib/openspout/src/Reader/ODS/Reader.php
index 80a6852b8e8a..0e10b9c70b12 100644
--- a/lib/openspout/src/Reader/ODS/Reader.php
+++ b/lib/openspout/src/Reader/ODS/Reader.php
@@ -7,6 +7,7 @@
 use OpenSpout\Common\Exception\IOException;
 use OpenSpout\Common\Helper\Escaper\ODS;
 use OpenSpout\Reader\AbstractReader;
+use OpenSpout\Reader\Exception\NoSheetsFoundException;
 use OpenSpout\Reader\ODS\Helper\SettingsHelper;
 use ZipArchive;
 
@@ -17,7 +18,7 @@ final class Reader extends AbstractReader
 {
     private ZipArchive $zip;
 
-    private Options $options;
+    private readonly Options $options;
 
     /** @var SheetIterator To iterator over the ODS sheets */
     private SheetIterator $sheetIterator;
@@ -47,8 +48,8 @@ protected function doesSupportStreamWrapper(): bool
      *
      * @param string $filePath Path of the file to be read
      *
-     * @throws \OpenSpout\Common\Exception\IOException            If the file at the given path or its content cannot be read
-     * @throws \OpenSpout\Reader\Exception\NoSheetsFoundException If there are no sheets in the file
+     * @throws IOException            If the file at the given path or its content cannot be read
+     * @throws NoSheetsFoundException If there are no sheets in the file
      */
     protected function openReader(string $filePath): void
     {
diff --git a/lib/openspout/src/Reader/ODS/RowIterator.php b/lib/openspout/src/Reader/ODS/RowIterator.php
index 9bdbbd203501..cfb6eeafc9b5 100644
--- a/lib/openspout/src/Reader/ODS/RowIterator.php
+++ b/lib/openspout/src/Reader/ODS/RowIterator.php
@@ -7,9 +7,11 @@
 use DOMElement;
 use OpenSpout\Common\Entity\Cell;
 use OpenSpout\Common\Entity\Row;
+use OpenSpout\Common\Exception\IOException;
 use OpenSpout\Reader\Common\XMLProcessor;
 use OpenSpout\Reader\Exception\InvalidValueException;
 use OpenSpout\Reader\Exception\IteratorNotRewindableException;
+use OpenSpout\Reader\Exception\SharedStringNotFoundException;
 use OpenSpout\Reader\ODS\Helper\CellValueFormatter;
 use OpenSpout\Reader\RowIteratorInterface;
 use OpenSpout\Reader\Wrapper\XMLReader;
@@ -30,13 +32,13 @@ final class RowIterator implements RowIteratorInterface
     public const XML_ATTRIBUTE_NUM_ROWS_REPEATED = 'table:number-rows-repeated';
     public const XML_ATTRIBUTE_NUM_COLUMNS_REPEATED = 'table:number-columns-repeated';
 
-    private Options $options;
+    private readonly Options $options;
 
     /** @var XMLProcessor Helper Object to process XML nodes */
-    private XMLProcessor $xmlProcessor;
+    private readonly XMLProcessor $xmlProcessor;
 
     /** @var Helper\CellValueFormatter Helper to format cell values */
-    private Helper\CellValueFormatter $cellValueFormatter;
+    private readonly Helper\CellValueFormatter $cellValueFormatter;
 
     /** @var bool Whether the iterator has already been rewound once */
     private bool $hasAlreadyBeenRewound = false;
@@ -45,7 +47,7 @@ final class RowIterator implements RowIteratorInterface
     private Row $currentlyProcessedRow;
 
     /** @var null|Row Buffer used to store the current row, while checking if there are more rows to read */
-    private ?Row $rowBuffer;
+    private ?Row $rowBuffer = null;
 
     /** @var bool Indicates whether all rows have been read */
     private bool $hasReachedEndOfFile = false;
@@ -57,7 +59,7 @@ final class RowIterator implements RowIteratorInterface
     private int $nextRowIndexToBeProcessed = 1;
 
     /** @var null|Cell Last processed cell (because when reading cell at column N+1, cell N is processed) */
-    private ?Cell $lastProcessedCell;
+    private ?Cell $lastProcessedCell = null;
 
     /** @var int Number of times the last processed row should be repeated */
     private int $numRowsRepeated = 1;
@@ -90,7 +92,7 @@ public function __construct(
      *
      * @see http://php.net/manual/en/iterator.rewind.php
      *
-     * @throws \OpenSpout\Reader\Exception\IteratorNotRewindableException If the iterator is rewound more than once
+     * @throws IteratorNotRewindableException If the iterator is rewound more than once
      */
     public function rewind(): void
     {
@@ -125,8 +127,8 @@ public function valid(): bool
      *
      * @see http://php.net/manual/en/iterator.next.php
      *
-     * @throws \OpenSpout\Reader\Exception\SharedStringNotFoundException If a shared string was not found
-     * @throws \OpenSpout\Common\Exception\IOException                   If unable to read the sheet data XML
+     * @throws SharedStringNotFoundException If a shared string was not found
+     * @throws IOException                   If unable to read the sheet data XML
      */
     public function next(): void
     {
@@ -176,8 +178,8 @@ private function doesNeedDataForNextRowToBeProcessed(): bool
     }
 
     /**
-     * @throws \OpenSpout\Reader\Exception\SharedStringNotFoundException If a shared string was not found
-     * @throws \OpenSpout\Common\Exception\IOException                   If unable to read the sheet data XML
+     * @throws SharedStringNotFoundException If a shared string was not found
+     * @throws IOException                   If unable to read the sheet data XML
      */
     private function readDataForNextRow(): void
     {
diff --git a/lib/openspout/src/Reader/ODS/Sheet.php b/lib/openspout/src/Reader/ODS/Sheet.php
index 7f71d0a09e03..52917b586390 100644
--- a/lib/openspout/src/Reader/ODS/Sheet.php
+++ b/lib/openspout/src/Reader/ODS/Sheet.php
@@ -12,19 +12,19 @@
 final class Sheet implements SheetWithVisibilityInterface
 {
     /** @var RowIterator To iterate over sheet's rows */
-    private RowIterator $rowIterator;
+    private readonly RowIterator $rowIterator;
 
     /** @var int Index of the sheet, based on order in the workbook (zero-based) */
-    private int $index;
+    private readonly int $index;
 
     /** @var string Name of the sheet */
-    private string $name;
+    private readonly string $name;
 
     /** @var bool Whether the sheet was the active one */
-    private bool $isActive;
+    private readonly bool $isActive;
 
     /** @var bool Whether the sheet is visible */
-    private bool $isVisible;
+    private readonly bool $isVisible;
 
     /**
      * @param RowIterator $rowIterator    The corresponding row iterator
diff --git a/lib/openspout/src/Reader/ODS/SheetIterator.php b/lib/openspout/src/Reader/ODS/SheetIterator.php
index 9d66d1068ad5..a6b34de16438 100644
--- a/lib/openspout/src/Reader/ODS/SheetIterator.php
+++ b/lib/openspout/src/Reader/ODS/SheetIterator.php
@@ -35,15 +35,15 @@ final class SheetIterator implements SheetIteratorInterface
     public const XML_ATTRIBUTE_TABLE_DISPLAY = 'table:display';
 
     /** @var string Path of the file to be read */
-    private string $filePath;
+    private readonly string $filePath;
 
-    private Options $options;
+    private readonly Options $options;
 
     /** @var XMLReader The XMLReader object that will help read sheet's XML data */
-    private XMLReader $xmlReader;
+    private readonly XMLReader $xmlReader;
 
     /** @var ODS Used to unescape XML data */
-    private ODS $escaper;
+    private readonly ODS $escaper;
 
     /** @var bool Whether there are still at least a sheet to be read */
     private bool $hasFoundSheet;
@@ -52,7 +52,7 @@ final class SheetIterator implements SheetIteratorInterface
     private int $currentSheetIndex;
 
     /** @var string The name of the sheet that was defined as active */
-    private ?string $activeSheetName;
+    private readonly ?string $activeSheetName;
 
     /** @var array<string, bool> Associative array [STYLE_NAME] => [IS_SHEET_VISIBLE] */
     private array $sheetsVisibility;
@@ -75,7 +75,7 @@ public function __construct(
      *
      * @see http://php.net/manual/en/iterator.rewind.php
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to open the XML file containing sheets' data
+     * @throws IOException If unable to open the XML file containing sheets' data
      */
     public function rewind(): void
     {
diff --git a/lib/openspout/src/Reader/ReaderInterface.php b/lib/openspout/src/Reader/ReaderInterface.php
index 146bdf88c62d..691bdd6698e1 100644
--- a/lib/openspout/src/Reader/ReaderInterface.php
+++ b/lib/openspout/src/Reader/ReaderInterface.php
@@ -4,6 +4,8 @@
 
 namespace OpenSpout\Reader;
 
+use OpenSpout\Common\Exception\IOException;
+
 /**
  * @template T of SheetIteratorInterface
  */
@@ -15,7 +17,7 @@ interface ReaderInterface
      *
      * @param string $filePath Path of the file to be read
      *
-     * @throws \OpenSpout\Common\Exception\IOException
+     * @throws IOException
      */
     public function open(string $filePath): void;
 
@@ -24,7 +26,7 @@ public function open(string $filePath): void;
      *
      * @return T
      *
-     * @throws \OpenSpout\Reader\Exception\ReaderNotOpenedException If called before opening the reader
+     * @throws Exception\ReaderNotOpenedException If called before opening the reader
      */
     public function getSheetIterator(): SheetIteratorInterface;
 
diff --git a/lib/openspout/src/Reader/Wrapper/XMLInternalErrorsHelper.php b/lib/openspout/src/Reader/Wrapper/XMLInternalErrorsHelper.php
index 971750c5c7ec..76ccc202143d 100644
--- a/lib/openspout/src/Reader/Wrapper/XMLInternalErrorsHelper.php
+++ b/lib/openspout/src/Reader/Wrapper/XMLInternalErrorsHelper.php
@@ -28,7 +28,7 @@ private function useXMLInternalErrors(): void
      * Throws an XMLProcessingException if an error occured.
      * It also always resets the "libxml_use_internal_errors" setting back to its initial value.
      *
-     * @throws \OpenSpout\Reader\Exception\XMLProcessingException
+     * @throws XMLProcessingException
      */
     private function resetXMLInternalErrorsSettingAndThrowIfXMLErrorOccured(): void
     {
diff --git a/lib/openspout/src/Reader/Wrapper/XMLReader.php b/lib/openspout/src/Reader/Wrapper/XMLReader.php
index 8fa9663f12cb..c2ebc16bd2da 100644
--- a/lib/openspout/src/Reader/Wrapper/XMLReader.php
+++ b/lib/openspout/src/Reader/Wrapper/XMLReader.php
@@ -4,6 +4,7 @@
 
 namespace OpenSpout\Reader\Wrapper;
 
+use OpenSpout\Reader\Exception\XMLProcessingException;
 use ZipArchive;
 
 /**
@@ -59,7 +60,7 @@ public function getRealPathURIForFileInZip(string $zipFilePath, string $fileInsi
      *
      * @see \XMLReader::read
      *
-     * @throws \OpenSpout\Reader\Exception\XMLProcessingException If an error/warning occurred
+     * @throws XMLProcessingException If an error/warning occurred
      */
     public function read(): bool
     {
@@ -79,7 +80,7 @@ public function read(): bool
      *
      * @return bool TRUE on success or FALSE on failure
      *
-     * @throws \OpenSpout\Reader\Exception\XMLProcessingException If an error/warning occurred
+     * @throws XMLProcessingException If an error/warning occurred
      */
     public function readUntilNodeFound(string $nodeName): bool
     {
@@ -98,7 +99,7 @@ public function readUntilNodeFound(string $nodeName): bool
      *
      * @param null|string $localName The name of the next node to move to
      *
-     * @throws \OpenSpout\Reader\Exception\XMLProcessingException If an error/warning occurred
+     * @throws XMLProcessingException If an error/warning occurred
      */
     public function next($localName = null): bool
     {
diff --git a/lib/openspout/src/Reader/XLSX/Helper/CellHelper.php b/lib/openspout/src/Reader/XLSX/Helper/CellHelper.php
index 19c4c248df2a..0b1fec262484 100644
--- a/lib/openspout/src/Reader/XLSX/Helper/CellHelper.php
+++ b/lib/openspout/src/Reader/XLSX/Helper/CellHelper.php
@@ -27,7 +27,7 @@ final class CellHelper
      *
      * @param string $cellIndex The Excel cell index ('A1', 'BC13', ...)
      *
-     * @throws \OpenSpout\Common\Exception\InvalidArgumentException When the given cell index is invalid
+     * @throws InvalidArgumentException When the given cell index is invalid
      */
     public static function getColumnIndexFromCellIndex(string $cellIndex): int
     {
diff --git a/lib/openspout/src/Reader/XLSX/Helper/CellValueFormatter.php b/lib/openspout/src/Reader/XLSX/Helper/CellValueFormatter.php
index 4a4548db6645..0157f5c2b9cb 100644
--- a/lib/openspout/src/Reader/XLSX/Helper/CellValueFormatter.php
+++ b/lib/openspout/src/Reader/XLSX/Helper/CellValueFormatter.php
@@ -4,9 +4,11 @@
 
 namespace OpenSpout\Reader\XLSX\Helper;
 
+use DateInterval;
 use DateTimeImmutable;
 use DOMElement;
 use Exception;
+use OpenSpout\Common\Entity\Cell;
 use OpenSpout\Common\Helper\Escaper\XLSX;
 use OpenSpout\Reader\Exception\InvalidValueException;
 use OpenSpout\Reader\XLSX\Manager\SharedStringsManager;
@@ -33,6 +35,7 @@ final class CellValueFormatter
      */
     public const XML_NODE_VALUE = 'v';
     public const XML_NODE_INLINE_STRING_VALUE = 't';
+    public const XML_NODE_FORMULA = 'f';
 
     /**
      * Definition of XML attributes used to parse data.
@@ -46,19 +49,19 @@ final class CellValueFormatter
     public const NUM_SECONDS_IN_ONE_DAY = 86400;
 
     /** @var SharedStringsManager Manages shared strings */
-    private SharedStringsManager $sharedStringsManager;
+    private readonly SharedStringsManager $sharedStringsManager;
 
     /** @var StyleManagerInterface Manages styles */
-    private StyleManagerInterface $styleManager;
+    private readonly StyleManagerInterface $styleManager;
 
     /** @var bool Whether date/time values should be returned as PHP objects or be formatted as strings */
-    private bool $shouldFormatDates;
+    private readonly bool $shouldFormatDates;
 
     /** @var bool Whether date/time values should use a calendar starting in 1904 instead of 1900 */
-    private bool $shouldUse1904Dates;
+    private readonly bool $shouldUse1904Dates;
 
     /** @var XLSX Used to unescape XML data */
-    private XLSX $escaper;
+    private readonly XLSX $escaper;
 
     /**
      * @param SharedStringsManager  $sharedStringsManager Manages shared strings
@@ -83,31 +86,44 @@ public function __construct(
 
     /**
      * Returns the (unescaped) correctly marshalled, cell value associated to the given XML node.
-     *
-     * @return bool|DateTimeImmutable|float|int|string The value associated with the cell
-     *
-     * @throws InvalidValueException If the value is not valid
      */
-    public function extractAndFormatNodeValue(DOMElement $node): bool|DateTimeImmutable|float|int|string
+    public function extractAndFormatNodeValue(DOMElement $node): Cell
     {
         // Default cell type is "n"
-        $cellType = $node->getAttribute(self::XML_ATTRIBUTE_TYPE) ?: self::CELL_TYPE_NUMERIC;
-        $cellStyleId = (int) $node->getAttribute(self::XML_ATTRIBUTE_STYLE_ID);
+        $cellType = $node->getAttribute(self::XML_ATTRIBUTE_TYPE);
+        if ('' === $cellType) {
+            $cellType = self::CELL_TYPE_NUMERIC;
+        }
         $vNodeValue = $this->getVNodeValue($node);
 
-        if (('' === $vNodeValue) && (self::CELL_TYPE_INLINE_STRING !== $cellType)) {
-            return $vNodeValue;
+        if (self::CELL_TYPE_NUMERIC === $cellType) {
+            $fNodeValue = $node->getElementsByTagName(self::XML_NODE_FORMULA)->item(0)?->nodeValue;
+            if (null !== $fNodeValue) {
+                $computedValue = $this->formatNumericCellValue($vNodeValue, (int) $node->getAttribute(self::XML_ATTRIBUTE_STYLE_ID));
+
+                return new Cell\FormulaCell('='.$fNodeValue, null, $computedValue);
+            }
         }
 
-        return match ($cellType) {
+        if ('' === $vNodeValue && self::CELL_TYPE_INLINE_STRING !== $cellType) {
+            return Cell::fromValue($vNodeValue);
+        }
+
+        $rawValue = match ($cellType) {
             self::CELL_TYPE_INLINE_STRING => $this->formatInlineStringCellValue($node),
             self::CELL_TYPE_SHARED_STRING => $this->formatSharedStringCellValue($vNodeValue),
             self::CELL_TYPE_STR => $this->formatStrCellValue($vNodeValue),
             self::CELL_TYPE_BOOLEAN => $this->formatBooleanCellValue($vNodeValue),
-            self::CELL_TYPE_NUMERIC => $this->formatNumericCellValue($vNodeValue, $cellStyleId),
+            self::CELL_TYPE_NUMERIC => $this->formatNumericCellValue($vNodeValue, (int) $node->getAttribute(self::XML_ATTRIBUTE_STYLE_ID)),
             self::CELL_TYPE_DATE => $this->formatDateCellValue($vNodeValue),
-            default => throw new InvalidValueException($vNodeValue),
+            default => new Cell\ErrorCell($vNodeValue, null),
         };
+
+        if ($rawValue instanceof Cell) {
+            return $rawValue;
+        }
+
+        return Cell::fromValue($rawValue);
     }
 
     /**
@@ -178,13 +194,15 @@ private function formatStrCellValue(string $nodeValue): string
      *
      * @param int $cellStyleId 0 being the default style
      */
-    private function formatNumericCellValue(int|float|string $nodeValue, int $cellStyleId): DateTimeImmutable|float|int|string
+    private function formatNumericCellValue(float|int|string $nodeValue, int $cellStyleId): DateInterval|DateTimeImmutable|float|int|string
     {
         // Numeric values can represent numbers as well as timestamps.
         // We need to look at the style of the cell to determine whether it is one or the other.
-        $shouldFormatAsDate = $this->styleManager->shouldFormatNumericValueAsDate($cellStyleId);
+        $formatCode = $this->styleManager->getNumberFormatCode($cellStyleId);
 
-        if ($shouldFormatAsDate) {
+        if (DateIntervalFormatHelper::isDurationFormat($formatCode)) {
+            $cellValue = $this->formatExcelDateIntervalValue((float) $nodeValue, $formatCode);
+        } elseif ($this->styleManager->shouldFormatNumericValueAsDate($cellStyleId)) {
             $cellValue = $this->formatExcelTimestampValue((float) $nodeValue, $cellStyleId);
         } else {
             $nodeIntValue = (int) $nodeValue;
@@ -195,6 +213,16 @@ private function formatNumericCellValue(int|float|string $nodeValue, int $cellSt
         return $cellValue;
     }
 
+    private function formatExcelDateIntervalValue(float $nodeValue, string $excelFormat): DateInterval|string
+    {
+        $dateInterval = DateIntervalFormatHelper::createDateIntervalFromHours($nodeValue);
+        if ($this->shouldFormatDates) {
+            return DateIntervalFormatHelper::formatDateInterval($dateInterval, $excelFormat);
+        }
+
+        return $dateInterval;
+    }
+
     /**
      * Returns a cell's PHP Date value, associated to the given timestamp.
      * NOTE: The timestamp is a float representing the number of days since the base Excel date:
@@ -207,7 +235,7 @@ private function formatNumericCellValue(int|float|string $nodeValue, int $cellSt
      *
      * @see ECMA-376 Part 1 - §18.17.4
      */
-    private function formatExcelTimestampValue(float $nodeValue, int $cellStyleId): string|DateTimeImmutable
+    private function formatExcelTimestampValue(float $nodeValue, int $cellStyleId): DateTimeImmutable|string
     {
         if (!$this->isValidTimestampValue($nodeValue)) {
             throw new InvalidValueException((string) $nodeValue);
@@ -236,7 +264,7 @@ private function isValidTimestampValue(float $timestampValue): bool
      *
      * @param int $cellStyleId 0 being the default style
      */
-    private function formatExcelTimestampValueAsDateTimeValue(float $nodeValue, int $cellStyleId): string|DateTimeImmutable
+    private function formatExcelTimestampValueAsDateTimeValue(float $nodeValue, int $cellStyleId): DateTimeImmutable|string
     {
         $baseDate = $this->shouldUse1904Dates ? '1904-01-01' : '1899-12-30';
 
@@ -288,16 +316,14 @@ private function formatBooleanCellValue(string $nodeValue): bool
      * @see ECMA-376 Part 1 - §18.17.4
      *
      * @param string $nodeValue ISO 8601 Date string
-     *
-     * @throws InvalidValueException If the value is not a valid date
      */
-    private function formatDateCellValue(string $nodeValue): string|DateTimeImmutable
+    private function formatDateCellValue(string $nodeValue): Cell\ErrorCell|DateTimeImmutable|string
     {
         // Mitigate thrown Exception on invalid date-time format (http://php.net/manual/en/datetime.construct.php)
         try {
             $cellValue = ($this->shouldFormatDates) ? $nodeValue : new DateTimeImmutable($nodeValue);
-        } catch (Exception $exception) {
-            throw new InvalidValueException($nodeValue, '', 0, $exception);
+        } catch (Exception) {
+            return new Cell\ErrorCell($nodeValue, null);
         }
 
         return $cellValue;
diff --git a/lib/openspout/src/Reader/XLSX/Helper/DateIntervalFormatHelper.php b/lib/openspout/src/Reader/XLSX/Helper/DateIntervalFormatHelper.php
new file mode 100644
index 000000000000..7ae1a6e5be11
--- /dev/null
+++ b/lib/openspout/src/Reader/XLSX/Helper/DateIntervalFormatHelper.php
@@ -0,0 +1,96 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenSpout\Reader\XLSX\Helper;
+
+use DateInterval;
+
+final class DateIntervalFormatHelper
+{
+    /**
+     * @see https://www.php.net/manual/en/dateinterval.format.php.
+     */
+    private const dateIntervalFormats = [
+        'hh' => '%H',
+        'h' => '%h',
+        'mm' => '%I',
+        'm' => '%i',
+        'ss' => '%S',
+        's' => '%s',
+    ];
+
+    /**
+     * Excel stores durations as fractions of days (24h = 1).
+     *
+     * Only fills hours/minutes/seconds because those are the only values that we can format back out again.
+     * Excel can also only handle those units as duration.
+     * PHP's DateInterval is also quite limited - it will not automatically convert unit overflow
+     *  (60 seconds are not converted to 1 minute).
+     */
+    public static function createDateIntervalFromHours(float $dayFractions): DateInterval
+    {
+        $time = abs($dayFractions) * 24; // convert to hours
+        $hours = floor($time);
+        $time = ($time - $hours) * 60;
+        $minutes = (int) floor($time); // must cast to int for type strict compare below
+        $time = ($time - $minutes) * 60;
+        $seconds = (int) round($time); // must cast to int for type strict compare below
+
+        // Bubble up rounding gain if we ended up with 60 seconds - disadvantage of using fraction of days for small durations:
+        if (60 === $seconds) {
+            $seconds = 0;
+            ++$minutes;
+        }
+        if (60 === $minutes) {
+            $minutes = 0;
+            ++$hours;
+        }
+
+        $interval = new DateInterval("P0DT{$hours}H{$minutes}M{$seconds}S");
+        if ($dayFractions < 0) {
+            $interval->invert = 1;
+        }
+
+        return $interval;
+    }
+
+    public static function isDurationFormat(string $excelFormat): bool
+    {
+        // Only consider formats with leading brackets as valid duration formats (e.g. "[hh]:mm", "[mm]:ss", etc.):
+        return 1 === preg_match('/^(\[hh?](:mm(:ss)?)?|\[mm?](:ss)?|\[ss?])$/', $excelFormat);
+    }
+
+    public static function toPHPDateIntervalFormat(string $excelDateFormat, ?string &$startUnit = null): string
+    {
+        $startUnit = null;
+        $phpFormatParts = [];
+        $formatParts = explode(':', str_replace(['[', ']'], '', $excelDateFormat));
+        foreach ($formatParts as $formatPart) {
+            $startUnit ??= $formatPart;
+            $phpFormatParts[] = self::dateIntervalFormats[$formatPart];
+        }
+
+        // Add the minus sign for potential negative durations:
+        return '%r'.implode(':', $phpFormatParts);
+    }
+
+    public static function formatDateInterval(DateInterval $dateInterval, string $excelDateFormat): string
+    {
+        $phpFormat = self::toPHPDateIntervalFormat($excelDateFormat, $startUnit);
+
+        // We have to move the hours to minutes or hours+minutes to seconds if the format in Excel did the same:
+        $startUnit = $startUnit[0]; // only take the first char
+        $dateIntervalClone = clone $dateInterval;
+        if ('m' === $startUnit) {
+            $dateIntervalClone->i = $dateIntervalClone->i + $dateIntervalClone->h * 60;
+            $dateIntervalClone->h = 0;
+        } elseif ('s' === $startUnit) {
+            $dateIntervalClone->s = $dateIntervalClone->s + $dateIntervalClone->i * 60 + $dateIntervalClone->h * 3600;
+            $dateIntervalClone->i = 0;
+            $dateIntervalClone->h = 0;
+        }
+
+        return $dateIntervalClone->format($phpFormat);
+    }
+}
diff --git a/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/CachingStrategyFactory.php b/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/CachingStrategyFactory.php
index ac1a71d6c438..749e628537c2 100644
--- a/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/CachingStrategyFactory.php
+++ b/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/CachingStrategyFactory.php
@@ -50,7 +50,7 @@ final class CachingStrategyFactory implements CachingStrategyFactoryInterface
      */
     public const MAX_NUM_STRINGS_PER_TEMP_FILE = 10000;
 
-    private MemoryLimit $memoryLimit;
+    private readonly MemoryLimit $memoryLimit;
 
     public function __construct(MemoryLimit $memoryLimit)
     {
diff --git a/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/CachingStrategyInterface.php b/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/CachingStrategyInterface.php
index e120c9595a8f..bc2cb5b07f3b 100644
--- a/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/CachingStrategyInterface.php
+++ b/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/CachingStrategyInterface.php
@@ -4,6 +4,8 @@
 
 namespace OpenSpout\Reader\XLSX\Manager\SharedStringsCaching;
 
+use OpenSpout\Reader\Exception\SharedStringNotFoundException;
+
 /**
  * @internal
  */
@@ -30,7 +32,7 @@ public function closeCache(): void;
      *
      * @return string The shared string at the given index
      *
-     * @throws \OpenSpout\Reader\Exception\SharedStringNotFoundException If no shared string found for the given index
+     * @throws SharedStringNotFoundException If no shared string found for the given index
      */
     public function getStringAtIndex(int $sharedStringIndex): string;
 
diff --git a/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/FileBasedStrategy.php b/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/FileBasedStrategy.php
index f018b765424a..2e9dc35e9c1a 100644
--- a/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/FileBasedStrategy.php
+++ b/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/FileBasedStrategy.php
@@ -22,17 +22,17 @@ final class FileBasedStrategy implements CachingStrategyInterface
     public const ESCAPED_LINE_FEED_CHARACTER = '_x000A_';
 
     /** @var FileSystemHelper Helper to perform file system operations */
-    private FileSystemHelper $fileSystemHelper;
+    private readonly FileSystemHelper $fileSystemHelper;
 
     /** @var string Temporary folder where the temporary files will be created */
-    private string $tempFolder;
+    private readonly string $tempFolder;
 
     /**
      * @var int Maximum number of strings that can be stored in one temp file
      *
      * @see CachingStrategyFactory::MAX_NUM_STRINGS_PER_TEMP_FILE
      */
-    private int $maxNumStringsPerTempFile;
+    private readonly int $maxNumStringsPerTempFile;
 
     /** @var null|resource Pointer to the last temp file a shared string was written to */
     private $tempFilePointer;
@@ -61,8 +61,6 @@ public function __construct(string $tempFolder, int $maxNumStringsPerTempFile)
         $this->tempFolder = $this->fileSystemHelper->createFolder($tempFolder, uniqid('sharedstrings'));
 
         $this->maxNumStringsPerTempFile = $maxNumStringsPerTempFile;
-
-        $this->tempFilePointer = null;
     }
 
     /**
@@ -110,7 +108,7 @@ public function closeCache(): void
      *
      * @return string The shared string at the given index
      *
-     * @throws \OpenSpout\Reader\Exception\SharedStringNotFoundException If no shared string found for the given index
+     * @throws SharedStringNotFoundException If no shared string found for the given index
      */
     public function getStringAtIndex(int $sharedStringIndex): string
     {
diff --git a/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/InMemoryStrategy.php b/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/InMemoryStrategy.php
index 488581016643..a3bcffc48c8d 100644
--- a/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/InMemoryStrategy.php
+++ b/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/InMemoryStrategy.php
@@ -20,7 +20,7 @@ final class InMemoryStrategy implements CachingStrategyInterface
     private SplFixedArray $inMemoryCache;
 
     /** @var bool Whether the cache has been closed */
-    private bool $isCacheClosed;
+    private bool $isCacheClosed = false;
 
     /**
      * @param int $sharedStringsUniqueCount Number of unique shared strings
@@ -28,7 +28,6 @@ final class InMemoryStrategy implements CachingStrategyInterface
     public function __construct(int $sharedStringsUniqueCount)
     {
         $this->inMemoryCache = new SplFixedArray($sharedStringsUniqueCount);
-        $this->isCacheClosed = false;
     }
 
     /**
@@ -60,13 +59,13 @@ public function closeCache(): void
      *
      * @return string The shared string at the given index
      *
-     * @throws \OpenSpout\Reader\Exception\SharedStringNotFoundException If no shared string found for the given index
+     * @throws SharedStringNotFoundException If no shared string found for the given index
      */
     public function getStringAtIndex(int $sharedStringIndex): string
     {
         try {
             return $this->inMemoryCache->offsetGet($sharedStringIndex);
-        } catch (RuntimeException $e) {
+        } catch (RuntimeException) {
             throw new SharedStringNotFoundException("Shared string not found for index: {$sharedStringIndex}");
         }
     }
diff --git a/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/MemoryLimit.php b/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/MemoryLimit.php
index e9d76286c5e6..5645908f1bfa 100644
--- a/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/MemoryLimit.php
+++ b/lib/openspout/src/Reader/XLSX/Manager/SharedStringsCaching/MemoryLimit.php
@@ -9,7 +9,7 @@
  */
 final class MemoryLimit
 {
-    private string $memoryLimit;
+    private readonly string $memoryLimit;
 
     public function __construct(string $memoryLimit)
     {
diff --git a/lib/openspout/src/Reader/XLSX/Manager/SharedStringsManager.php b/lib/openspout/src/Reader/XLSX/Manager/SharedStringsManager.php
index 9a129a18f5f6..5a93b01a4230 100644
--- a/lib/openspout/src/Reader/XLSX/Manager/SharedStringsManager.php
+++ b/lib/openspout/src/Reader/XLSX/Manager/SharedStringsManager.php
@@ -6,6 +6,7 @@
 
 use DOMElement;
 use OpenSpout\Common\Exception\IOException;
+use OpenSpout\Reader\Exception\SharedStringNotFoundException;
 use OpenSpout\Reader\Exception\XMLProcessingException;
 use OpenSpout\Reader\Wrapper\XMLReader;
 use OpenSpout\Reader\XLSX\Manager\SharedStringsCaching\CachingStrategyFactoryInterface;
@@ -34,15 +35,15 @@ final class SharedStringsManager
     public const XML_ATTRIBUTE_VALUE_PRESERVE = 'preserve';
 
     /** @var string Path of the XLSX file being read */
-    private string $filePath;
+    private readonly string $filePath;
 
-    private Options $options;
+    private readonly Options $options;
 
     /** @var WorkbookRelationshipsManager Helps retrieving workbook relationships */
-    private WorkbookRelationshipsManager $workbookRelationshipsManager;
+    private readonly WorkbookRelationshipsManager $workbookRelationshipsManager;
 
     /** @var CachingStrategyFactoryInterface Factory to create shared strings caching strategies */
-    private CachingStrategyFactoryInterface $cachingStrategyFactory;
+    private readonly CachingStrategyFactoryInterface $cachingStrategyFactory;
 
     /** @var CachingStrategyInterface The best caching strategy for storing shared strings */
     private CachingStrategyInterface $cachingStrategy;
@@ -77,7 +78,7 @@ public function hasSharedStrings(): bool
      * The XML file can be really big with sheets containing a lot of data. That is why
      * we need to use a XML reader that provides streaming like the XMLReader library.
      *
-     * @throws \OpenSpout\Common\Exception\IOException If shared strings XML file can't be read
+     * @throws IOException If shared strings XML file can't be read
      */
     public function extractSharedStrings(): void
     {
@@ -118,7 +119,7 @@ public function extractSharedStrings(): void
      *
      * @return string The shared string at the given index
      *
-     * @throws \OpenSpout\Reader\Exception\SharedStringNotFoundException If no shared string found for the given index
+     * @throws SharedStringNotFoundException If no shared string found for the given index
      */
     public function getStringAtIndex(int $sharedStringIndex): string
     {
@@ -142,7 +143,7 @@ public function cleanup(): void
      *
      * @return null|int Number of unique shared strings in the sharedStrings.xml file
      *
-     * @throws \OpenSpout\Common\Exception\IOException If sharedStrings.xml is invalid and can't be read
+     * @throws IOException If sharedStrings.xml is invalid and can't be read
      */
     private function getSharedStringsUniqueCount(XMLReader $xmlReader): ?int
     {
diff --git a/lib/openspout/src/Reader/XLSX/Manager/SheetManager.php b/lib/openspout/src/Reader/XLSX/Manager/SheetManager.php
index 296cba3f3712..69aa11d36112 100644
--- a/lib/openspout/src/Reader/XLSX/Manager/SheetManager.php
+++ b/lib/openspout/src/Reader/XLSX/Manager/SheetManager.php
@@ -51,15 +51,15 @@ final class SheetManager
     public const SHEET_STATE_HIDDEN = 'hidden';
 
     /** @var string Path of the XLSX file being read */
-    private string $filePath;
+    private readonly string $filePath;
 
-    private Options $options;
+    private readonly Options $options;
 
     /** @var SharedStringsManager Manages shared strings */
-    private SharedStringsManager $sharedStringsManager;
+    private readonly SharedStringsManager $sharedStringsManager;
 
     /** @var XLSX Used to unescape XML data */
-    private XLSX $escaper;
+    private readonly XLSX $escaper;
 
     /** @var Sheet[] List of sheets */
     private array $sheets;
@@ -111,7 +111,7 @@ public function getSheets(): array
     }
 
     /**
-     * @param \OpenSpout\Reader\Wrapper\XMLReader $xmlReader XMLReader object, positioned on a "<workbookPr>" starting node
+     * @param XMLReader $xmlReader XMLReader object, positioned on a "<workbookPr>" starting node
      *
      * @return int A return code that indicates what action should the processor take next
      */
@@ -126,7 +126,7 @@ private function processWorkbookPropertiesStartingNode(XMLReader $xmlReader): in
     }
 
     /**
-     * @param \OpenSpout\Reader\Wrapper\XMLReader $xmlReader XMLReader object, positioned on a "<workbookView>" starting node
+     * @param XMLReader $xmlReader XMLReader object, positioned on a "<workbookView>" starting node
      *
      * @return int A return code that indicates what action should the processor take next
      */
@@ -140,7 +140,7 @@ private function processWorkbookViewStartingNode(XMLReader $xmlReader): int
     }
 
     /**
-     * @param \OpenSpout\Reader\Wrapper\XMLReader $xmlReader XMLReader object, positioned on a "<sheet>" starting node
+     * @param XMLReader $xmlReader XMLReader object, positioned on a "<sheet>" starting node
      *
      * @return int A return code that indicates what action should the processor take next
      */
@@ -166,11 +166,11 @@ private function processSheetsEndingNode(): int
      * We can find the XML file path describing the sheet inside "workbook.xml.res", by mapping with the sheet ID
      * ("r:id" in "workbook.xml", "Id" in "workbook.xml.res").
      *
-     * @param \OpenSpout\Reader\Wrapper\XMLReader $xmlReaderOnSheetNode XML Reader instance, pointing on the node describing the sheet, as defined in "workbook.xml"
-     * @param int                                 $sheetIndexZeroBased  Index of the sheet, based on order of appearance in the workbook (zero-based)
-     * @param bool                                $isSheetActive        Whether this sheet was defined as active
+     * @param XMLReader $xmlReaderOnSheetNode XML Reader instance, pointing on the node describing the sheet, as defined in "workbook.xml"
+     * @param int       $sheetIndexZeroBased  Index of the sheet, based on order of appearance in the workbook (zero-based)
+     * @param bool      $isSheetActive        Whether this sheet was defined as active
      *
-     * @return \OpenSpout\Reader\XLSX\Sheet Sheet instance
+     * @return Sheet Sheet instance
      */
     private function getSheetFromSheetXMLNode(XMLReader $xmlReaderOnSheetNode, int $sheetIndexZeroBased, bool $isSheetActive): Sheet
     {
diff --git a/lib/openspout/src/Reader/XLSX/Manager/StyleManager.php b/lib/openspout/src/Reader/XLSX/Manager/StyleManager.php
index 6c56ea8f781f..caac7dbcd86b 100644
--- a/lib/openspout/src/Reader/XLSX/Manager/StyleManager.php
+++ b/lib/openspout/src/Reader/XLSX/Manager/StyleManager.php
@@ -11,25 +11,25 @@ class StyleManager implements StyleManagerInterface
     /**
      * Nodes used to find relevant information in the styles XML file.
      */
-    public const XML_NODE_NUM_FMTS = 'numFmts';
-    public const XML_NODE_NUM_FMT = 'numFmt';
-    public const XML_NODE_CELL_XFS = 'cellXfs';
-    public const XML_NODE_XF = 'xf';
+    final public const XML_NODE_NUM_FMTS = 'numFmts';
+    final public const XML_NODE_NUM_FMT = 'numFmt';
+    final public const XML_NODE_CELL_XFS = 'cellXfs';
+    final public const XML_NODE_XF = 'xf';
 
     /**
      * Attributes used to find relevant information in the styles XML file.
      */
-    public const XML_ATTRIBUTE_NUM_FMT_ID = 'numFmtId';
-    public const XML_ATTRIBUTE_FORMAT_CODE = 'formatCode';
-    public const XML_ATTRIBUTE_APPLY_NUMBER_FORMAT = 'applyNumberFormat';
-    public const XML_ATTRIBUTE_COUNT = 'count';
+    final public const XML_ATTRIBUTE_NUM_FMT_ID = 'numFmtId';
+    final public const XML_ATTRIBUTE_FORMAT_CODE = 'formatCode';
+    final public const XML_ATTRIBUTE_APPLY_NUMBER_FORMAT = 'applyNumberFormat';
+    final public const XML_ATTRIBUTE_COUNT = 'count';
 
     /**
      * By convention, default style ID is 0.
      */
-    public const DEFAULT_STYLE_ID = 0;
+    final public const DEFAULT_STYLE_ID = 0;
 
-    public const NUMBER_FORMAT_GENERAL = 'General';
+    final public const NUMBER_FORMAT_GENERAL = 'General';
 
     /**
      * Mapping between built-in numFmtId and the associated format - for dates only.
@@ -52,10 +52,10 @@ class StyleManager implements StyleManagerInterface
     ];
 
     /** @var string Path of the XLSX file being read */
-    private string $filePath;
+    private readonly string $filePath;
 
     /** @var null|string Path of the styles XML file */
-    private ?string $stylesXMLFilePath;
+    private readonly ?string $stylesXMLFilePath;
 
     /** @var array<int, string> Array containing a mapping NUM_FMT_ID => FORMAT_CODE */
     private array $customNumberFormats;
@@ -107,7 +107,7 @@ public function getNumberFormatCode(int $styleId): string
             $numberFormatCode = self::builtinNumFmtIdToNumFormatMapping[$numFmtId];
         } else {
             $customNumberFormats = $this->getCustomNumberFormats();
-            $numberFormatCode = $customNumberFormats[$numFmtId];
+            $numberFormatCode = $customNumberFormats[$numFmtId] ?? '';
         }
 
         return $numberFormatCode;
@@ -166,7 +166,7 @@ private function extractRelevantInfo(): void
      * For simplicity, the styles attributes are kept in memory. This is possible thanks
      * to the reuse of formats. So 1 million cells should not use 1 million formats.
      *
-     * @param \OpenSpout\Reader\Wrapper\XMLReader $xmlReader XML Reader positioned on the "numFmts" node
+     * @param XMLReader $xmlReader XML Reader positioned on the "numFmts" node
      */
     private function extractNumberFormats(XMLReader $xmlReader): void
     {
@@ -188,7 +188,7 @@ private function extractNumberFormats(XMLReader $xmlReader): void
      * For simplicity, the styles attributes are kept in memory. This is possible thanks
      * to the reuse of styles. So 1 million cells should not use 1 million styles.
      *
-     * @param \OpenSpout\Reader\Wrapper\XMLReader $xmlReader XML Reader positioned on the "cellXfs" node
+     * @param XMLReader $xmlReader XML Reader positioned on the "cellXfs" node
      */
     private function extractStyleAttributes(XMLReader $xmlReader): void
     {
@@ -262,7 +262,7 @@ private function getFormatCodeForNumFmtId(int $numFmtId): ?string
         $customNumberFormats = $this->getCustomNumberFormats();
 
         // Using isset here because it is way faster than array_key_exists...
-        return (isset($customNumberFormats[$numFmtId])) ? $customNumberFormats[$numFmtId] : null;
+        return $customNumberFormats[$numFmtId] ?? null;
     }
 
     /**
@@ -296,6 +296,10 @@ private function isFormatCodeMatchingDateFormatPattern(string $formatCode): bool
         $formatCode = preg_replace($pattern, '', $formatCode);
         \assert(null !== $formatCode);
 
+        // Remove strings in double quotes, as they won't be interpreted as date format characters
+        $formatCode = preg_replace('/"[^"]+"/', '', $formatCode);
+        \assert(null !== $formatCode);
+
         // custom date formats contain specific characters to represent the date:
         // e - yy - m - d - h - s
         // and all of their variants (yyyy - mm - dd...)
diff --git a/lib/openspout/src/Reader/XLSX/Manager/WorkbookRelationshipsManager.php b/lib/openspout/src/Reader/XLSX/Manager/WorkbookRelationshipsManager.php
index 1c3e209ce32e..9ffa8874544d 100644
--- a/lib/openspout/src/Reader/XLSX/Manager/WorkbookRelationshipsManager.php
+++ b/lib/openspout/src/Reader/XLSX/Manager/WorkbookRelationshipsManager.php
@@ -35,7 +35,7 @@ final class WorkbookRelationshipsManager
     public const XML_ATTRIBUTE_TARGET = 'Target';
 
     /** @var string Path of the XLSX file being read */
-    private string $filePath;
+    private readonly string $filePath;
 
     /** @var array<string, string> Cache of the already read workbook relationships: [TYPE] => [FILE_NAME] */
     private array $cachedWorkbookRelationships;
@@ -114,7 +114,7 @@ public function getStylesXMLFilePath(): string
      *
      * @return array<string, string>
      *
-     * @throws \OpenSpout\Common\Exception\IOException If workbook.xml.rels can't be read
+     * @throws IOException If workbook.xml.rels can't be read
      */
     private function getWorkbookRelationships(): array
     {
diff --git a/lib/openspout/src/Reader/XLSX/Reader.php b/lib/openspout/src/Reader/XLSX/Reader.php
index a87b78e17d96..f9bbc0923326 100644
--- a/lib/openspout/src/Reader/XLSX/Reader.php
+++ b/lib/openspout/src/Reader/XLSX/Reader.php
@@ -7,6 +7,7 @@
 use OpenSpout\Common\Exception\IOException;
 use OpenSpout\Common\Helper\Escaper\XLSX;
 use OpenSpout\Reader\AbstractReader;
+use OpenSpout\Reader\Exception\NoSheetsFoundException;
 use OpenSpout\Reader\XLSX\Manager\SharedStringsCaching\CachingStrategyFactory;
 use OpenSpout\Reader\XLSX\Manager\SharedStringsCaching\CachingStrategyFactoryInterface;
 use OpenSpout\Reader\XLSX\Manager\SharedStringsCaching\MemoryLimit;
@@ -28,8 +29,8 @@ final class Reader extends AbstractReader
     /** @var SheetIterator To iterator over the XLSX sheets */
     private SheetIterator $sheetIterator;
 
-    private Options $options;
-    private CachingStrategyFactoryInterface $cachingStrategyFactory;
+    private readonly Options $options;
+    private readonly CachingStrategyFactoryInterface $cachingStrategyFactory;
 
     public function __construct(
         ?Options $options = null,
@@ -66,8 +67,8 @@ protected function doesSupportStreamWrapper(): bool
      *
      * @param string $filePath Path of the file to be read
      *
-     * @throws \OpenSpout\Common\Exception\IOException            If the file at the given path or its content cannot be read
-     * @throws \OpenSpout\Reader\Exception\NoSheetsFoundException If there are no sheets in the file
+     * @throws IOException            If the file at the given path or its content cannot be read
+     * @throws NoSheetsFoundException If there are no sheets in the file
      */
     protected function openReader(string $filePath): void
     {
diff --git a/lib/openspout/src/Reader/XLSX/RowIterator.php b/lib/openspout/src/Reader/XLSX/RowIterator.php
index b5ca46cc57eb..b3ad10e84c5d 100644
--- a/lib/openspout/src/Reader/XLSX/RowIterator.php
+++ b/lib/openspout/src/Reader/XLSX/RowIterator.php
@@ -7,10 +7,11 @@
 use DOMElement;
 use OpenSpout\Common\Entity\Cell;
 use OpenSpout\Common\Entity\Row;
+use OpenSpout\Common\Exception\InvalidArgumentException;
 use OpenSpout\Common\Exception\IOException;
 use OpenSpout\Reader\Common\Manager\RowManager;
 use OpenSpout\Reader\Common\XMLProcessor;
-use OpenSpout\Reader\Exception\InvalidValueException;
+use OpenSpout\Reader\Exception\SharedStringNotFoundException;
 use OpenSpout\Reader\RowIteratorInterface;
 use OpenSpout\Reader\Wrapper\XMLReader;
 use OpenSpout\Reader\XLSX\Helper\CellHelper;
@@ -35,22 +36,22 @@ final class RowIterator implements RowIteratorInterface
     public const XML_ATTRIBUTE_CELL_INDEX = 'r';
 
     /** @var string Path of the XLSX file being read */
-    private string $filePath;
+    private readonly string $filePath;
 
     /** @var string Path of the sheet data XML file as in [Content_Types].xml */
-    private string $sheetDataXMLFilePath;
+    private readonly string $sheetDataXMLFilePath;
 
     /** @var XMLReader The XMLReader object that will help read sheet's XML data */
-    private XMLReader $xmlReader;
+    private readonly XMLReader $xmlReader;
 
     /** @var XMLProcessor Helper Object to process XML nodes */
-    private XMLProcessor $xmlProcessor;
+    private readonly XMLProcessor $xmlProcessor;
 
     /** @var Helper\CellValueFormatter Helper to format cell values */
-    private Helper\CellValueFormatter $cellValueFormatter;
+    private readonly Helper\CellValueFormatter $cellValueFormatter;
 
     /** @var RowManager Manages rows */
-    private RowManager $rowManager;
+    private readonly RowManager $rowManager;
 
     /**
      * TODO: This variable can be deleted when row indices get preserved.
@@ -63,7 +64,7 @@ final class RowIterator implements RowIteratorInterface
     private Row $currentlyProcessedRow;
 
     /** @var null|Row Buffer used to store the current row, while checking if there are more rows to read */
-    private ?Row $rowBuffer;
+    private ?Row $rowBuffer = null;
 
     /** @var bool Indicates whether all rows have been read */
     private bool $hasReachedEndOfFile = false;
@@ -72,7 +73,7 @@ final class RowIterator implements RowIteratorInterface
     private int $numColumns = 0;
 
     /** @var bool Whether empty rows should be returned or skipped */
-    private bool $shouldPreserveEmptyRows;
+    private readonly bool $shouldPreserveEmptyRows;
 
     /** @var int Last row index processed (one-based) */
     private int $lastRowIndexProcessed = 0;
@@ -124,7 +125,7 @@ public function __construct(
      *
      * @see http://php.net/manual/en/iterator.rewind.php
      *
-     * @throws \OpenSpout\Common\Exception\IOException If the sheet data XML cannot be read
+     * @throws IOException If the sheet data XML cannot be read
      */
     public function rewind(): void
     {
@@ -164,8 +165,8 @@ public function valid(): bool
      *
      * @see http://php.net/manual/en/iterator.next.php
      *
-     * @throws \OpenSpout\Reader\Exception\SharedStringNotFoundException If a shared string was not found
-     * @throws \OpenSpout\Common\Exception\IOException                   If unable to read the sheet data XML
+     * @throws SharedStringNotFoundException If a shared string was not found
+     * @throws IOException                   If unable to read the sheet data XML
      */
     public function next(): void
     {
@@ -251,8 +252,8 @@ private function doesNeedDataForNextRowToBeProcessed(): bool
     }
 
     /**
-     * @throws \OpenSpout\Reader\Exception\SharedStringNotFoundException If a shared string was not found
-     * @throws \OpenSpout\Common\Exception\IOException                   If unable to read the sheet data XML
+     * @throws SharedStringNotFoundException If a shared string was not found
+     * @throws IOException                   If unable to read the sheet data XML
      */
     private function readDataForNextRow(): void
     {
@@ -317,9 +318,9 @@ private function processCellStartingNode(XMLReader $xmlReader): int
         $currentColumnIndex = $this->getColumnIndex($xmlReader);
 
         // NOTE: expand() will automatically decode all XML entities of the child nodes
-        /** @var DOMElement $node */
         $node = $xmlReader->expand();
-        $cell = $this->getCell($node);
+        \assert($node instanceof DOMElement);
+        $cell = $this->cellValueFormatter->extractAndFormatNodeValue($node);
 
         $this->currentlyProcessedRow->setCellAtIndex($cell, $currentColumnIndex);
         $this->lastColumnIndexProcessed = $currentColumnIndex;
@@ -366,7 +367,7 @@ private function processWorksheetEndingNode(): int
      *
      * @return int Row index
      *
-     * @throws \OpenSpout\Common\Exception\InvalidArgumentException When the given cell index is invalid
+     * @throws InvalidArgumentException When the given cell index is invalid
      */
     private function getRowIndex(XMLReader $xmlReader): int
     {
@@ -383,7 +384,7 @@ private function getRowIndex(XMLReader $xmlReader): int
      *
      * @return int Column index
      *
-     * @throws \OpenSpout\Common\Exception\InvalidArgumentException When the given cell index is invalid
+     * @throws InvalidArgumentException When the given cell index is invalid
      */
     private function getColumnIndex(XMLReader $xmlReader): int
     {
@@ -394,21 +395,4 @@ private function getColumnIndex(XMLReader $xmlReader): int
                 CellHelper::getColumnIndexFromCellIndex($currentCellIndex) :
                 $this->lastColumnIndexProcessed + 1;
     }
-
-    /**
-     * Returns the cell with (unescaped) correctly marshalled, cell value associated to the given XML node.
-     *
-     * @return Cell The cell set with the associated with the cell
-     */
-    private function getCell(DOMElement $node): Cell
-    {
-        try {
-            $cellValue = $this->cellValueFormatter->extractAndFormatNodeValue($node);
-            $cell = Cell::fromValue($cellValue);
-        } catch (InvalidValueException $exception) {
-            $cell = new Cell\ErrorCell($exception->getInvalidValue(), null);
-        }
-
-        return $cell;
-    }
 }
diff --git a/lib/openspout/src/Reader/XLSX/Sheet.php b/lib/openspout/src/Reader/XLSX/Sheet.php
index dc671234f75d..504b20ed33a8 100644
--- a/lib/openspout/src/Reader/XLSX/Sheet.php
+++ b/lib/openspout/src/Reader/XLSX/Sheet.php
@@ -13,22 +13,22 @@
 final class Sheet implements SheetWithVisibilityInterface
 {
     /** @var RowIterator To iterate over sheet's rows */
-    private RowIterator $rowIterator;
+    private readonly RowIterator $rowIterator;
 
     /** @var SheetHeaderReader To read the header of the sheet, containing for instance the col widths */
-    private SheetHeaderReader $headerReader;
+    private readonly SheetHeaderReader $headerReader;
 
     /** @var int Index of the sheet, based on order in the workbook (zero-based) */
-    private int $index;
+    private readonly int $index;
 
     /** @var string Name of the sheet */
-    private string $name;
+    private readonly string $name;
 
     /** @var bool Whether the sheet was the active one */
-    private bool $isActive;
+    private readonly bool $isActive;
 
     /** @var bool Whether the sheet is visible */
-    private bool $isVisible;
+    private readonly bool $isVisible;
 
     /**
      * @param RowIterator $rowIterator    The corresponding row iterator
diff --git a/lib/openspout/src/Reader/XLSX/SheetHeaderReader.php b/lib/openspout/src/Reader/XLSX/SheetHeaderReader.php
index ea4be2bb7493..5c6b4296f9bf 100644
--- a/lib/openspout/src/Reader/XLSX/SheetHeaderReader.php
+++ b/lib/openspout/src/Reader/XLSX/SheetHeaderReader.php
@@ -18,16 +18,16 @@ final class SheetHeaderReader
     public const XML_ATTRIBUTE_WIDTH = 'width';
 
     /** @var string Path of the XLSX file being read */
-    private string $filePath;
+    private readonly string $filePath;
 
     /** @var string Path of the sheet data XML file as in [Content_Types].xml */
-    private string $sheetDataXMLFilePath;
+    private readonly string $sheetDataXMLFilePath;
 
     /** @var XMLReader The XMLReader object that will help read sheet's XML data */
-    private XMLReader $xmlReader;
+    private readonly XMLReader $xmlReader;
 
     /** @var XMLProcessor Helper Object to process XML nodes */
-    private XMLProcessor $xmlProcessor;
+    private readonly XMLProcessor $xmlProcessor;
 
     /** @var ColumnWidth[] The widths of the columns in the sheet, if specified */
     private array $columnWidths = [];
diff --git a/lib/openspout/src/Writer/AutoFilter.php b/lib/openspout/src/Writer/AutoFilter.php
index b9796446457c..5fefac1068be 100644
--- a/lib/openspout/src/Writer/AutoFilter.php
+++ b/lib/openspout/src/Writer/AutoFilter.php
@@ -16,10 +16,9 @@ final class AutoFilter
      * @param positive-int   $toRow
      */
     public function __construct(
-        public int $fromColumnIndex,
-        public int $fromRow,
-        public int $toColumnIndex,
-        public int $toRow
-    ) {
-    }
+        public readonly int $fromColumnIndex,
+        public readonly int $fromRow,
+        public readonly int $toColumnIndex,
+        public readonly int $toRow
+    ) {}
 }
diff --git a/lib/openspout/src/Writer/CSV/Writer.php b/lib/openspout/src/Writer/CSV/Writer.php
index f3d94e487b00..f1087eac7801 100644
--- a/lib/openspout/src/Writer/CSV/Writer.php
+++ b/lib/openspout/src/Writer/CSV/Writer.php
@@ -15,7 +15,7 @@ final class Writer extends AbstractWriter
     /** @var string Content-Type value for the header */
     protected static string $headerContentType = 'text/csv; charset=UTF-8';
 
-    private Options $options;
+    private readonly Options $options;
 
     private int $lastWrittenRowIndex = 0;
 
@@ -49,10 +49,16 @@ protected function openWriter(): void
      */
     protected function addRowToWriter(Row $row): void
     {
-        $cells = array_map(static function (Cell\BooleanCell|Cell\EmptyCell|Cell\NumericCell|Cell\StringCell|Cell\FormulaCell $value): string {
+        $cells = array_map(static function (Cell\BooleanCell|Cell\DateIntervalCell|Cell\DateTimeCell|Cell\EmptyCell|Cell\FormulaCell|Cell\NumericCell|Cell\StringCell $value): string {
             if ($value instanceof Cell\BooleanCell) {
                 return (string) (int) $value->getValue();
             }
+            if ($value instanceof Cell\DateTimeCell) {
+                return $value->getValue()->format(DATE_ATOM);
+            }
+            if ($value instanceof Cell\DateIntervalCell) {
+                return $value->getValue()->format('P%yY%mM%dDT%hH%iM%sS%fF');
+            }
 
             return (string) $value->getValue();
         }, $row->getCells());
diff --git a/lib/openspout/src/Writer/Common/ColumnWidth.php b/lib/openspout/src/Writer/Common/ColumnWidth.php
index ba7b80205787..c24fbcb8d075 100644
--- a/lib/openspout/src/Writer/Common/ColumnWidth.php
+++ b/lib/openspout/src/Writer/Common/ColumnWidth.php
@@ -14,9 +14,8 @@ final class ColumnWidth
      * @param positive-int $end
      */
     public function __construct(
-        public int $start,
-        public int $end,
-        public float $width,
-    ) {
-    }
+        public readonly int $start,
+        public readonly int $end,
+        public readonly float $width,
+    ) {}
 }
diff --git a/lib/openspout/src/Writer/Common/Creator/WriterFactory.php b/lib/openspout/src/Writer/Common/Creator/WriterFactory.php
index 530633ecab79..4106a2dfd846 100644
--- a/lib/openspout/src/Writer/Common/Creator/WriterFactory.php
+++ b/lib/openspout/src/Writer/Common/Creator/WriterFactory.php
@@ -13,6 +13,8 @@
 /**
  * This factory is used to create writers, based on the type of the file to be read.
  * It supports CSV, XLSX and ODS formats.
+ *
+ * @deprecated Guessing mechanisms are brittle by nature and won't be provided by this library anymore
  */
 final class WriterFactory
 {
@@ -21,7 +23,7 @@ final class WriterFactory
      *
      * @param string $path The path to the spreadsheet file. Supported extensions are .csv,.ods and .xlsx
      *
-     * @throws \OpenSpout\Common\Exception\UnsupportedTypeException
+     * @throws UnsupportedTypeException
      */
     public static function createFromFile(string $path): WriterInterface
     {
diff --git a/lib/openspout/src/Writer/Common/Entity/Sheet.php b/lib/openspout/src/Writer/Common/Entity/Sheet.php
index fb41a722257c..fba9f3051772 100644
--- a/lib/openspout/src/Writer/Common/Entity/Sheet.php
+++ b/lib/openspout/src/Writer/Common/Entity/Sheet.php
@@ -7,6 +7,7 @@
 use OpenSpout\Writer\AutoFilter;
 use OpenSpout\Writer\Common\ColumnWidth;
 use OpenSpout\Writer\Common\Manager\SheetManager;
+use OpenSpout\Writer\Exception\InvalidSheetNameException;
 use OpenSpout\Writer\XLSX\Entity\SheetView;
 
 /**
@@ -17,10 +18,10 @@ final class Sheet
     public const DEFAULT_SHEET_NAME_PREFIX = 'Sheet';
 
     /** @var 0|positive-int Index of the sheet, based on order in the workbook (zero-based) */
-    private int $index;
+    private readonly int $index;
 
     /** @var string ID of the sheet's associated workbook. Used to restrict sheet name uniqueness enforcement to a single workbook */
-    private string $associatedWorkbookId;
+    private readonly string $associatedWorkbookId;
 
     /** @var string Name of the sheet */
     private string $name;
@@ -29,7 +30,7 @@ final class Sheet
     private bool $isVisible;
 
     /** @var SheetManager Sheet manager */
-    private SheetManager $sheetManager;
+    private readonly SheetManager $sheetManager;
 
     private ?SheetView $sheetView = null;
 
@@ -41,6 +42,9 @@ final class Sheet
     /** @var ColumnWidth[] Array of min-max-width arrays */
     private array $COLUMN_WIDTHS = [];
 
+    /** @var string rows to repeat at top */
+    private ?string $printTitleRows = null;
+
     /**
      * @param 0|positive-int $sheetIndex           Index of the sheet, based on order in the workbook (zero-based)
      * @param string         $associatedWorkbookId ID of the sheet's associated workbook
@@ -88,7 +92,7 @@ public function getName(): string
      *
      * @param string $name Name of the sheet
      *
-     * @throws \OpenSpout\Writer\Exception\InvalidSheetNameException if the sheet's name is invalid
+     * @throws InvalidSheetNameException if the sheet's name is invalid
      */
     public function setName(string $name): self
     {
@@ -205,4 +209,14 @@ public function getColumnWidths(): array
     {
         return $this->COLUMN_WIDTHS;
     }
+
+    public function getPrintTitleRows(): ?string
+    {
+        return $this->printTitleRows;
+    }
+
+    public function setPrintTitleRows(string $printTitleRows): void
+    {
+        $this->printTitleRows = $printTitleRows;
+    }
 }
diff --git a/lib/openspout/src/Writer/Common/Entity/Workbook.php b/lib/openspout/src/Writer/Common/Entity/Workbook.php
index e179c513b76b..859508633da8 100644
--- a/lib/openspout/src/Writer/Common/Entity/Workbook.php
+++ b/lib/openspout/src/Writer/Common/Entity/Workbook.php
@@ -13,7 +13,7 @@ final class Workbook
     private array $worksheets = [];
 
     /** @var string Timestamp based unique ID identifying the workbook */
-    private string $internalId;
+    private readonly string $internalId;
 
     /**
      * Workbook constructor.
diff --git a/lib/openspout/src/Writer/Common/Entity/Worksheet.php b/lib/openspout/src/Writer/Common/Entity/Worksheet.php
index 6fc6a2f659cb..f1db1cbffe3b 100644
--- a/lib/openspout/src/Writer/Common/Entity/Worksheet.php
+++ b/lib/openspout/src/Writer/Common/Entity/Worksheet.php
@@ -10,19 +10,19 @@
 final class Worksheet
 {
     /** @var string Path to the XML file that will contain the sheet data */
-    private string $filePath;
+    private readonly string $filePath;
 
     /** @var null|resource Pointer to the sheet data file (e.g. xl/worksheets/sheet1.xml) */
     private $filePointer;
 
     /** @var Sheet The "external" sheet */
-    private Sheet $externalSheet;
+    private readonly Sheet $externalSheet;
 
     /** @var int Maximum number of columns among all the written rows */
-    private int $maxNumColumns;
+    private int $maxNumColumns = 0;
 
     /** @var int Index of the last written row */
-    private int $lastWrittenRowIndex;
+    private int $lastWrittenRowIndex = 0;
 
     /**
      * Worksheet constructor.
@@ -30,10 +30,7 @@ final class Worksheet
     public function __construct(string $worksheetFilePath, Sheet $externalSheet)
     {
         $this->filePath = $worksheetFilePath;
-        $this->filePointer = null;
         $this->externalSheet = $externalSheet;
-        $this->maxNumColumns = 0;
-        $this->lastWrittenRowIndex = 0;
     }
 
     public function getFilePath(): string
diff --git a/lib/openspout/src/Writer/Common/Helper/FileSystemWithRootFolderHelperInterface.php b/lib/openspout/src/Writer/Common/Helper/FileSystemWithRootFolderHelperInterface.php
index afd365b12ccb..0efd02602078 100644
--- a/lib/openspout/src/Writer/Common/Helper/FileSystemWithRootFolderHelperInterface.php
+++ b/lib/openspout/src/Writer/Common/Helper/FileSystemWithRootFolderHelperInterface.php
@@ -4,6 +4,7 @@
 
 namespace OpenSpout\Writer\Common\Helper;
 
+use OpenSpout\Common\Exception\IOException;
 use OpenSpout\Common\Helper\FileSystemHelperInterface;
 
 /**
@@ -14,7 +15,7 @@ interface FileSystemWithRootFolderHelperInterface extends FileSystemHelperInterf
     /**
      * Creates all the folders needed to create a spreadsheet, as well as the files that won't change.
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create at least one of the base folders
+     * @throws IOException If unable to create at least one of the base folders
      */
     public function createBaseFilesAndFolders(): void;
 
diff --git a/lib/openspout/src/Writer/Common/Manager/AbstractWorkbookManager.php b/lib/openspout/src/Writer/Common/Manager/AbstractWorkbookManager.php
index 3411b140bb33..dc3fbb1a496b 100644
--- a/lib/openspout/src/Writer/Common/Manager/AbstractWorkbookManager.php
+++ b/lib/openspout/src/Writer/Common/Manager/AbstractWorkbookManager.php
@@ -5,6 +5,7 @@
 namespace OpenSpout\Writer\Common\Manager;
 
 use OpenSpout\Common\Entity\Row;
+use OpenSpout\Common\Exception\InvalidArgumentException;
 use OpenSpout\Common\Exception\IOException;
 use OpenSpout\Common\Helper\StringHelper;
 use OpenSpout\Writer\Common\AbstractOptions;
@@ -32,10 +33,10 @@ abstract class AbstractWorkbookManager implements WorkbookManagerInterface
     protected AbstractOptions $options;
 
     /** @var Workbook The workbook to manage */
-    private Workbook $workbook;
+    private readonly Workbook $workbook;
 
     /** @var StyleMerger Helper to merge styles */
-    private StyleMerger $styleMerger;
+    private readonly StyleMerger $styleMerger;
 
     /** @var Worksheet The worksheet where data will be written to */
     private Worksheet $currentWorksheet;
@@ -113,8 +114,8 @@ final public function setCurrentSheet(Sheet $sheet): void
      *
      * @param Row $row The row to be added
      *
-     * @throws IOException                                          If trying to create a new sheet and unable to open the sheet for writing
-     * @throws \OpenSpout\Common\Exception\InvalidArgumentException
+     * @throws IOException              If trying to create a new sheet and unable to open the sheet for writing
+     * @throws InvalidArgumentException
      */
     final public function addRowToCurrentWorksheet(Row $row): void
     {
@@ -190,7 +191,7 @@ private function cleanupTempFolder(): void
      *
      * @return Worksheet The created sheet
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to open the sheet for writing
+     * @throws IOException If unable to open the sheet for writing
      */
     private function addNewSheet(): Worksheet
     {
@@ -253,7 +254,7 @@ private function hasCurrentWorksheetReachedMaxRows(): bool
      * @param Row       $row       The row to be added
      *
      * @throws IOException
-     * @throws \OpenSpout\Common\Exception\InvalidArgumentException
+     * @throws InvalidArgumentException
      */
     private function addRowToWorksheet(Worksheet $worksheet, Row $row): void
     {
diff --git a/lib/openspout/src/Writer/Common/Manager/RegisteredStyle.php b/lib/openspout/src/Writer/Common/Manager/RegisteredStyle.php
index 1144cee528bc..ff7fe3803e06 100644
--- a/lib/openspout/src/Writer/Common/Manager/RegisteredStyle.php
+++ b/lib/openspout/src/Writer/Common/Manager/RegisteredStyle.php
@@ -13,9 +13,9 @@
  */
 final class RegisteredStyle
 {
-    private Style $style;
+    private readonly Style $style;
 
-    private bool $isMatchingRowStyle;
+    private readonly bool $isMatchingRowStyle;
 
     public function __construct(Style $style, bool $isMatchingRowStyle)
     {
diff --git a/lib/openspout/src/Writer/Common/Manager/SheetManager.php b/lib/openspout/src/Writer/Common/Manager/SheetManager.php
index 937093f4cb17..2fe54df60d85 100644
--- a/lib/openspout/src/Writer/Common/Manager/SheetManager.php
+++ b/lib/openspout/src/Writer/Common/Manager/SheetManager.php
@@ -26,7 +26,7 @@ final class SheetManager
     /** @var array<string, array<int, string>> Associative array [WORKBOOK_ID] => [[SHEET_INDEX] => [SHEET_NAME]] keeping track of sheets' name to enforce uniqueness per workbook */
     private static array $SHEETS_NAME_USED = [];
 
-    private StringHelper $stringHelper;
+    private readonly StringHelper $stringHelper;
 
     /**
      * SheetManager constructor.
@@ -43,7 +43,7 @@ public function __construct(StringHelper $stringHelper)
      *
      * @param Sheet $sheet The sheet whose future name is checked
      *
-     * @throws \OpenSpout\Writer\Exception\InvalidSheetNameException if the sheet's name is invalid
+     * @throws InvalidSheetNameException if the sheet's name is invalid
      */
     public function throwIfNameIsInvalid(string $name, Sheet $sheet): void
     {
diff --git a/lib/openspout/src/Writer/Common/Manager/Style/PossiblyUpdatedStyle.php b/lib/openspout/src/Writer/Common/Manager/Style/PossiblyUpdatedStyle.php
index c147c35aa6d0..ac6ae85851de 100644
--- a/lib/openspout/src/Writer/Common/Manager/Style/PossiblyUpdatedStyle.php
+++ b/lib/openspout/src/Writer/Common/Manager/Style/PossiblyUpdatedStyle.php
@@ -11,8 +11,8 @@
  */
 final class PossiblyUpdatedStyle
 {
-    private Style $style;
-    private bool $isUpdated;
+    private readonly Style $style;
+    private readonly bool $isUpdated;
 
     public function __construct(Style $style, bool $isUpdated)
     {
diff --git a/lib/openspout/src/Writer/Common/Manager/WorksheetManagerInterface.php b/lib/openspout/src/Writer/Common/Manager/WorksheetManagerInterface.php
index 3817cbc5a571..897dd9d4efba 100644
--- a/lib/openspout/src/Writer/Common/Manager/WorksheetManagerInterface.php
+++ b/lib/openspout/src/Writer/Common/Manager/WorksheetManagerInterface.php
@@ -5,6 +5,8 @@
 namespace OpenSpout\Writer\Common\Manager;
 
 use OpenSpout\Common\Entity\Row;
+use OpenSpout\Common\Exception\InvalidArgumentException;
+use OpenSpout\Common\Exception\IOException;
 use OpenSpout\Writer\Common\Entity\Worksheet;
 
 /**
@@ -18,8 +20,8 @@ interface WorksheetManagerInterface
      * @param Worksheet $worksheet The worksheet to add the row to
      * @param Row       $row       The row to be added
      *
-     * @throws \OpenSpout\Common\Exception\IOException              If the data cannot be written
-     * @throws \OpenSpout\Common\Exception\InvalidArgumentException If a cell value's type is not supported
+     * @throws IOException              If the data cannot be written
+     * @throws InvalidArgumentException If a cell value's type is not supported
      */
     public function addRow(Worksheet $worksheet, Row $row): void;
 
@@ -28,7 +30,7 @@ public function addRow(Worksheet $worksheet, Row $row): void;
      *
      * @param Worksheet $worksheet The worksheet to start
      *
-     * @throws \OpenSpout\Common\Exception\IOException If the sheet data file cannot be opened for writing
+     * @throws IOException If the sheet data file cannot be opened for writing
      */
     public function startSheet(Worksheet $worksheet): void;
 
diff --git a/lib/openspout/src/Writer/Exception/InvalidSheetNameException.php b/lib/openspout/src/Writer/Exception/InvalidSheetNameException.php
index a01add1ebdf5..ed9cdd93c605 100644
--- a/lib/openspout/src/Writer/Exception/InvalidSheetNameException.php
+++ b/lib/openspout/src/Writer/Exception/InvalidSheetNameException.php
@@ -4,6 +4,4 @@
 
 namespace OpenSpout\Writer\Exception;
 
-final class InvalidSheetNameException extends WriterException
-{
-}
+final class InvalidSheetNameException extends WriterException {}
diff --git a/lib/openspout/src/Writer/Exception/SheetNotFoundException.php b/lib/openspout/src/Writer/Exception/SheetNotFoundException.php
index 25622c13835a..9689ab0a1408 100644
--- a/lib/openspout/src/Writer/Exception/SheetNotFoundException.php
+++ b/lib/openspout/src/Writer/Exception/SheetNotFoundException.php
@@ -4,6 +4,4 @@
 
 namespace OpenSpout\Writer\Exception;
 
-final class SheetNotFoundException extends WriterException
-{
-}
+final class SheetNotFoundException extends WriterException {}
diff --git a/lib/openspout/src/Writer/Exception/WriterAlreadyOpenedException.php b/lib/openspout/src/Writer/Exception/WriterAlreadyOpenedException.php
index b91b3e8f4718..026a59eda0bf 100644
--- a/lib/openspout/src/Writer/Exception/WriterAlreadyOpenedException.php
+++ b/lib/openspout/src/Writer/Exception/WriterAlreadyOpenedException.php
@@ -4,6 +4,4 @@
 
 namespace OpenSpout\Writer\Exception;
 
-final class WriterAlreadyOpenedException extends WriterException
-{
-}
+final class WriterAlreadyOpenedException extends WriterException {}
diff --git a/lib/openspout/src/Writer/Exception/WriterException.php b/lib/openspout/src/Writer/Exception/WriterException.php
index 270cbb712e93..91faa27b9b74 100644
--- a/lib/openspout/src/Writer/Exception/WriterException.php
+++ b/lib/openspout/src/Writer/Exception/WriterException.php
@@ -6,6 +6,4 @@
 
 use OpenSpout\Common\Exception\OpenSpoutException;
 
-abstract class WriterException extends OpenSpoutException
-{
-}
+abstract class WriterException extends OpenSpoutException {}
diff --git a/lib/openspout/src/Writer/Exception/WriterNotOpenedException.php b/lib/openspout/src/Writer/Exception/WriterNotOpenedException.php
index 39b06fd39999..49b8db870832 100644
--- a/lib/openspout/src/Writer/Exception/WriterNotOpenedException.php
+++ b/lib/openspout/src/Writer/Exception/WriterNotOpenedException.php
@@ -4,6 +4,4 @@
 
 namespace OpenSpout\Writer\Exception;
 
-final class WriterNotOpenedException extends WriterException
-{
-}
+final class WriterNotOpenedException extends WriterException {}
diff --git a/lib/openspout/src/Writer/ODS/Helper/FileSystemHelper.php b/lib/openspout/src/Writer/ODS/Helper/FileSystemHelper.php
index a2545eae061a..df9c0e3929aa 100644
--- a/lib/openspout/src/Writer/ODS/Helper/FileSystemHelper.php
+++ b/lib/openspout/src/Writer/ODS/Helper/FileSystemHelper.php
@@ -5,6 +5,7 @@
 namespace OpenSpout\Writer\ODS\Helper;
 
 use DateTimeImmutable;
+use OpenSpout\Common\Exception\IOException;
 use OpenSpout\Common\Helper\FileSystemHelper as CommonFileSystemHelper;
 use OpenSpout\Writer\Common\Entity\Worksheet;
 use OpenSpout\Writer\Common\Helper\FileSystemWithRootFolderHelperInterface;
@@ -27,11 +28,11 @@ final class FileSystemHelper implements FileSystemWithRootFolderHelperInterface
     public const MIMETYPE_FILE_NAME = 'mimetype';
     public const STYLES_XML_FILE_NAME = 'styles.xml';
 
-    private string $baseFolderRealPath;
+    private readonly string $baseFolderRealPath;
 
     /** @var string document creator */
-    private string $creator;
-    private CommonFileSystemHelper $baseFileSystemHelper;
+    private readonly string $creator;
+    private readonly CommonFileSystemHelper $baseFileSystemHelper;
 
     /** @var string Path to the root folder inside the temp folder where the files to create the ODS will be stored */
     private string $rootFolder;
@@ -43,7 +44,7 @@ final class FileSystemHelper implements FileSystemWithRootFolderHelperInterface
     private string $sheetsContentTempFolder;
 
     /** @var ZipHelper Helper to perform tasks with Zip archive */
-    private ZipHelper $zipHelper;
+    private readonly ZipHelper $zipHelper;
 
     /**
      * @param string    $baseFolderPath The path of the base folder where all the I/O can occur
@@ -91,7 +92,7 @@ public function getSheetsContentTempFolder(): string
     /**
      * Creates all the folders needed to create a ODS file, as well as the files that won't change.
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create at least one of the base folders
+     * @throws IOException If unable to create at least one of the base folders
      */
     public function createBaseFilesAndFolders(): void
     {
@@ -214,7 +215,7 @@ public function zipRootFolderAndCopyToStream($streamPointer): void
     /**
      * Creates the folder that will be used as root.
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the folder
+     * @throws IOException If unable to create the folder
      */
     private function createRootFolder(): self
     {
@@ -226,7 +227,7 @@ private function createRootFolder(): self
     /**
      * Creates the "META-INF" folder under the root folder as well as the "manifest.xml" file in it.
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the folder or the "manifest.xml" file
+     * @throws IOException If unable to create the folder or the "manifest.xml" file
      */
     private function createMetaInfoFolderAndFile(): self
     {
@@ -240,7 +241,7 @@ private function createMetaInfoFolderAndFile(): self
     /**
      * Creates the "manifest.xml" file under the "META-INF" folder (under root).
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the file
+     * @throws IOException If unable to create the file
      */
     private function createManifestFile(): self
     {
@@ -263,7 +264,7 @@ private function createManifestFile(): self
      * Creates the temp folder where specific sheets content will be written to.
      * This folder is not part of the final ODS file and is only used to be able to jump between sheets.
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the folder
+     * @throws IOException If unable to create the folder
      */
     private function createSheetsContentTempFolder(): self
     {
@@ -275,7 +276,7 @@ private function createSheetsContentTempFolder(): self
     /**
      * Creates the "meta.xml" file under the root folder.
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the file
+     * @throws IOException If unable to create the file
      */
     private function createMetaFile(): self
     {
@@ -300,7 +301,7 @@ private function createMetaFile(): self
     /**
      * Creates the "mimetype" file under the root folder.
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the file
+     * @throws IOException If unable to create the file
      */
     private function createMimetypeFile(): self
     {
diff --git a/lib/openspout/src/Writer/ODS/Manager/Style/StyleManager.php b/lib/openspout/src/Writer/ODS/Manager/Style/StyleManager.php
index 967d33dea72e..ca516d6ea955 100644
--- a/lib/openspout/src/Writer/ODS/Manager/Style/StyleManager.php
+++ b/lib/openspout/src/Writer/ODS/Manager/Style/StyleManager.php
@@ -22,7 +22,7 @@
  */
 final class StyleManager extends CommonStyleManager
 {
-    private AbstractOptions $options;
+    private readonly AbstractOptions $options;
 
     public function __construct(StyleRegistry $styleRegistry, AbstractOptions $options)
     {
diff --git a/lib/openspout/src/Writer/ODS/Manager/WorksheetManager.php b/lib/openspout/src/Writer/ODS/Manager/WorksheetManager.php
index c77f72f43bf4..0c548fd21f4e 100644
--- a/lib/openspout/src/Writer/ODS/Manager/WorksheetManager.php
+++ b/lib/openspout/src/Writer/ODS/Manager/WorksheetManager.php
@@ -25,13 +25,13 @@
 final class WorksheetManager implements WorksheetManagerInterface
 {
     /** @var ODSEscaper Strings escaper */
-    private ODSEscaper $stringsEscaper;
+    private readonly ODSEscaper $stringsEscaper;
 
     /** @var StyleManager Manages styles */
-    private StyleManager $styleManager;
+    private readonly StyleManager $styleManager;
 
     /** @var StyleMerger Helper to merge styles together */
-    private StyleMerger $styleMerger;
+    private readonly StyleMerger $styleMerger;
 
     /**
      * WorksheetManager constructor.
@@ -51,7 +51,7 @@ public function __construct(
      *
      * @param Worksheet $worksheet The worksheet to start
      *
-     * @throws \OpenSpout\Common\Exception\IOException If the sheet data file cannot be opened for writing
+     * @throws IOException If the sheet data file cannot be opened for writing
      */
     public function startSheet(Worksheet $worksheet): void
     {
diff --git a/lib/openspout/src/Writer/ODS/Options.php b/lib/openspout/src/Writer/ODS/Options.php
index 547ee2da8056..ab26415dc2df 100644
--- a/lib/openspout/src/Writer/ODS/Options.php
+++ b/lib/openspout/src/Writer/ODS/Options.php
@@ -6,6 +6,4 @@
 
 use OpenSpout\Writer\Common\AbstractOptions;
 
-final class Options extends AbstractOptions
-{
-}
+final class Options extends AbstractOptions {}
diff --git a/lib/openspout/src/Writer/ODS/Writer.php b/lib/openspout/src/Writer/ODS/Writer.php
index 665e186bc5e8..fbbb56c07b8e 100644
--- a/lib/openspout/src/Writer/ODS/Writer.php
+++ b/lib/openspout/src/Writer/ODS/Writer.php
@@ -19,7 +19,7 @@ final class Writer extends AbstractWriterMultiSheets
 {
     /** @var string Content-Type value for the header */
     protected static string $headerContentType = 'application/vnd.oasis.opendocument.spreadsheet';
-    private Options $options;
+    private readonly Options $options;
 
     public function __construct(?Options $options = null)
     {
diff --git a/lib/openspout/src/Writer/WriterInterface.php b/lib/openspout/src/Writer/WriterInterface.php
index c294d6d16fc9..272eba96143d 100644
--- a/lib/openspout/src/Writer/WriterInterface.php
+++ b/lib/openspout/src/Writer/WriterInterface.php
@@ -5,6 +5,8 @@
 namespace OpenSpout\Writer;
 
 use OpenSpout\Common\Entity\Row;
+use OpenSpout\Common\Exception\InvalidArgumentException;
+use OpenSpout\Common\Exception\IOException;
 
 interface WriterInterface
 {
@@ -14,7 +16,7 @@ interface WriterInterface
      *
      * @param string $outputFilePath Path of the output file that will contain the data
      *
-     * @throws \OpenSpout\Common\Exception\IOException If the writer cannot be opened or if the given path is not writable
+     * @throws IOException If the writer cannot be opened or if the given path is not writable
      */
     public function openToFile(string $outputFilePath): void;
 
@@ -24,7 +26,7 @@ public function openToFile(string $outputFilePath): void;
      *
      * @param string $outputFileName Name of the output file that will contain the data. If a path is passed in, only the file name will be kept
      *
-     * @throws \OpenSpout\Common\Exception\IOException If the writer cannot be opened
+     * @throws IOException If the writer cannot be opened
      */
     public function openToBrowser(string $outputFileName): void;
 
@@ -33,8 +35,8 @@ public function openToBrowser(string $outputFileName): void;
      *
      * @param Row $row The row to be appended to the stream
      *
-     * @throws \OpenSpout\Writer\Exception\WriterNotOpenedException If the writer has not been opened yet
-     * @throws \OpenSpout\Common\Exception\IOException              If unable to write data
+     * @throws Exception\WriterNotOpenedException If the writer has not been opened yet
+     * @throws IOException                        If unable to write data
      */
     public function addRow(Row $row): void;
 
@@ -43,9 +45,9 @@ public function addRow(Row $row): void;
      *
      * @param Row[] $rows The rows to be appended to the stream
      *
-     * @throws \OpenSpout\Common\Exception\InvalidArgumentException If the input param is not valid
-     * @throws \OpenSpout\Writer\Exception\WriterNotOpenedException If the writer has not been opened yet
-     * @throws \OpenSpout\Common\Exception\IOException              If unable to write data
+     * @throws InvalidArgumentException           If the input param is not valid
+     * @throws Exception\WriterNotOpenedException If the writer has not been opened yet
+     * @throws IOException                        If unable to write data
      */
     public function addRows(array $rows): void;
 
diff --git a/lib/openspout/src/Writer/XLSX/Entity/SheetView.php b/lib/openspout/src/Writer/XLSX/Entity/SheetView.php
index 4cbd400006b0..e4f89a9a424f 100644
--- a/lib/openspout/src/Writer/XLSX/Entity/SheetView.php
+++ b/lib/openspout/src/Writer/XLSX/Entity/SheetView.php
@@ -256,7 +256,7 @@ private function getFreezeCellPaneXml(): string
     private function generateAttributes(array $data): string
     {
         // Create attribute for each key
-        $attributes = array_map(static function (string $key, bool|string|int $value): string {
+        $attributes = array_map(static function (string $key, bool|int|string $value): string {
             if (\is_bool($value)) {
                 $value = $value ? 'true' : 'false';
             }
diff --git a/lib/openspout/src/Writer/XLSX/Helper/DateIntervalHelper.php b/lib/openspout/src/Writer/XLSX/Helper/DateIntervalHelper.php
new file mode 100644
index 000000000000..5fc5017aa8a1
--- /dev/null
+++ b/lib/openspout/src/Writer/XLSX/Helper/DateIntervalHelper.php
@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenSpout\Writer\XLSX\Helper;
+
+use DateInterval;
+
+/**
+ * @internal
+ */
+final class DateIntervalHelper
+{
+    /**
+     * Excel stores time durations as fractions of days:
+     *   A value of 1 equals 24 hours, a value of 0.5 equals 12 hours, etc.
+     *
+     * Note: Excel can only display durations up to hours and it will only auto-detect this value as an actual duration
+     *     if the value is less than 1, even if you specify a custom format such als "hh:mm:ss".
+     *   To force the display into a duration format, you have to use the brackets around the left most unit
+     *     of the format, e.g. "[h]:mm" or "[mm]:ss", which tells Excel to use up all the remaining time exceeding
+     *     this unit and put it in this last unit.
+     */
+    public static function toExcel(DateInterval $interval): float
+    {
+        // For years and months we can only use the respective average of days here - this won't be accurate, but the
+        // DateInterval doesn't give us more details on those:
+        $days = $interval->y * 365.25
+            + $interval->m * 30.437
+            + $interval->d
+            + $interval->h / 24
+            + $interval->i / 24 / 60
+            + $interval->s / 24 / 60 / 60;
+
+        if (1 === $interval->invert) {
+            $days *= -1;
+        }
+
+        return $days;
+    }
+}
diff --git a/lib/openspout/src/Writer/XLSX/Helper/FileSystemHelper.php b/lib/openspout/src/Writer/XLSX/Helper/FileSystemHelper.php
index ba1293f96c1c..b39bdb6e71ea 100644
--- a/lib/openspout/src/Writer/XLSX/Helper/FileSystemHelper.php
+++ b/lib/openspout/src/Writer/XLSX/Helper/FileSystemHelper.php
@@ -5,6 +5,7 @@
 namespace OpenSpout\Writer\XLSX\Helper;
 
 use DateTimeImmutable;
+use OpenSpout\Common\Exception\IOException;
 use OpenSpout\Common\Helper\Escaper\XLSX;
 use OpenSpout\Common\Helper\FileSystemHelper as CommonFileSystemHelper;
 use OpenSpout\Writer\Common\Entity\Sheet;
@@ -40,17 +41,17 @@ final class FileSystemHelper implements FileSystemWithRootFolderHelperInterface
         <worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">
         EOD;
 
-    private string $baseFolderRealPath;
-    private CommonFileSystemHelper $baseFileSystemHelper;
+    private readonly string $baseFolderRealPath;
+    private readonly CommonFileSystemHelper $baseFileSystemHelper;
 
     /** @var ZipHelper Helper to perform tasks with Zip archive */
-    private ZipHelper $zipHelper;
+    private readonly ZipHelper $zipHelper;
 
     /** @var string document creator */
-    private string $creator;
+    private readonly string $creator;
 
     /** @var XLSX Used to escape XML data */
-    private XLSX $escaper;
+    private readonly XLSX $escaper;
 
     /** @var string Path to the root folder inside the temp folder where the files to create the XLSX will be stored */
     private string $rootFolder;
@@ -131,7 +132,7 @@ public function getSheetsContentTempFolder(): string
     /**
      * Creates all the folders needed to create a XLSX file, as well as the files that won't change.
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create at least one of the base folders
+     * @throws IOException If unable to create at least one of the base folders
      */
     public function createBaseFilesAndFolders(): void
     {
@@ -221,6 +222,9 @@ public function createWorkbookFile(array $worksheets): self
                 );
                 $definedNames .= '<definedName function="false" hidden="true" localSheetId="'.$sheet->getIndex().'" name="_xlnm._FilterDatabase" vbProcedure="false">'.$name.'</definedName>';
             }
+            if (null !== $printTitleRows = $sheet->getPrintTitleRows()) {
+                $definedNames .= '<definedName name="_xlnm.Print_Titles" localSheetId="'.$sheet->getIndex().'">'.$this->escaper->escape($sheet->getName()).'!'.$printTitleRows.'</definedName>';
+            }
         }
         if ('' !== $definedNames) {
             $workbookXmlFileContents .= '<definedNames>'.$definedNames.'</definedNames>';
@@ -307,7 +311,7 @@ public function createStylesFile(StyleManager $styleManager): self
     public function createContentFiles(Options $options, array $worksheets): self
     {
         $allMergeCells = $options->getMergeCells();
-
+        $pageSetup = $options->getPageSetup();
         foreach ($worksheets as $worksheet) {
             $contentXmlFilePath = $this->getXlWorksheetsFolder().\DIRECTORY_SEPARATOR.basename($worksheet->getFilePath());
             $worksheetFilePointer = fopen($contentXmlFilePath, 'w');
@@ -326,10 +330,15 @@ public function createContentFiles(Options $options, array $worksheets): self
                     CellHelper::getColumnLettersFromColumnIndex($autofilter->toColumnIndex),
                     $autofilter->toRow
                 );
-                fwrite($worksheetFilePointer, '<sheetPr filterMode="false"><pageSetUpPr fitToPage="false"/></sheetPr>');
+                if (isset($pageSetup) && $pageSetup->fitToPage) {
+                    fwrite($worksheetFilePointer, '<sheetPr filterMode="false"><pageSetUpPr fitToPage="true"/></sheetPr>');
+                } else {
+                    fwrite($worksheetFilePointer, '<sheetPr filterMode="false"><pageSetUpPr fitToPage="false"/></sheetPr>');
+                }
                 fwrite($worksheetFilePointer, sprintf('<dimension ref="%s"/>', $range));
+            } elseif (isset($pageSetup) && $pageSetup->fitToPage) {
+                fwrite($worksheetFilePointer, '<sheetPr><pageSetUpPr fitToPage="true"/></sheetPr>');
             }
-
             if (null !== ($sheetView = $sheet->getSheetView())) {
                 fwrite($worksheetFilePointer, '<sheetViews>'.$sheetView->getXml().'</sheetViews>');
             }
@@ -366,6 +375,12 @@ public function createContentFiles(Options $options, array $worksheets): self
                 fwrite($worksheetFilePointer, $mergeCellString);
             }
 
+            $this->getXMLFragmentForPageMargin($worksheetFilePointer, $options);
+
+            $this->getXMLFragmentForPageSetup($worksheetFilePointer, $options);
+
+            $this->getXMLFragmentForHeaderFooter($worksheetFilePointer, $options);
+
             // Add the legacy drawing for comments
             fwrite($worksheetFilePointer, '<legacyDrawing r:id="rId_comments_vml1"/>');
 
@@ -411,6 +426,93 @@ public function zipRootFolderAndCopyToStream($streamPointer): void
         $this->deleteFile($zipFilePath);
     }
 
+    /**
+     * @param resource $targetResource
+     */
+    private function getXMLFragmentForPageMargin($targetResource, Options $options): void
+    {
+        $pageMargin = $options->getPageMargin();
+        if (null === $pageMargin) {
+            return;
+        }
+
+        fwrite($targetResource, "<pageMargins top=\"{$pageMargin->top}\" right=\"{$pageMargin->right}\" bottom=\"{$pageMargin->bottom}\" left=\"{$pageMargin->left}\" header=\"{$pageMargin->header}\" footer=\"{$pageMargin->footer}\"/>");
+    }
+
+    /**
+     * @param resource $targetResource
+     */
+    private function getXMLFragmentForHeaderFooter($targetResource, Options $options): void
+    {
+        $headerFooter = $options->getHeaderFooter();
+        if (null === $headerFooter) {
+            return;
+        }
+
+        $xml = '<headerFooter';
+
+        if ($headerFooter->differentOddEven) {
+            $xml .= " differentOddEven=\"{$headerFooter->differentOddEven}\"";
+        }
+
+        $xml .= '>';
+
+        if (null !== $headerFooter->oddHeader) {
+            $xml .= "<oddHeader>{$headerFooter->oddHeader}</oddHeader>";
+        }
+
+        if (null !== $headerFooter->oddFooter) {
+            $xml .= "<oddFooter>{$headerFooter->oddFooter}</oddFooter>";
+        }
+
+        if ($headerFooter->differentOddEven) {
+            if (null !== $headerFooter->evenHeader) {
+                $xml .= "<evenHeader>{$headerFooter->evenHeader}</evenHeader>";
+            }
+
+            if (null !== $headerFooter->evenFooter) {
+                $xml .= "<evenFooter>{$headerFooter->evenFooter}</evenFooter>";
+            }
+        }
+
+        $xml .= '</headerFooter>';
+
+        fwrite($targetResource, $xml);
+    }
+
+    /**
+     * @param resource $targetResource
+     */
+    private function getXMLFragmentForPageSetup($targetResource, Options $options): void
+    {
+        $pageSetup = $options->getPageSetup();
+        if (null === $pageSetup) {
+            return;
+        }
+
+        $xml = '<pageSetup';
+
+        if (null !== $pageSetup->pageOrientation) {
+            $xml .= " orientation=\"{$pageSetup->pageOrientation->value}\"";
+        }
+
+        if (null !== $pageSetup->paperSize) {
+            $xml .= " paperSize=\"{$pageSetup->paperSize->value}\"";
+        }
+
+        if (null !== $pageSetup->fitToHeight) {
+            $xml .= " fitToHeight=\"{$pageSetup->fitToHeight}\"";
+        }
+
+        if (null !== $pageSetup->fitToWidth) {
+            $xml .= " fitToWidth=\"{$pageSetup->fitToWidth}\"";
+        }
+
+        $xml .= '/>';
+
+        fwrite($targetResource, $xml);
+    }
+
     /**
      * Construct column width references xml to inject into worksheet xml file.
      */
@@ -453,7 +555,7 @@ private function getXMLFragmentForDefaultCellSizing(Options $options): string
     /**
      * Creates the folder that will be used as root.
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the folder
+     * @throws IOException If unable to create the folder
      */
     private function createRootFolder(): self
     {
@@ -465,7 +567,7 @@ private function createRootFolder(): self
     /**
      * Creates the "_rels" folder under the root folder as well as the ".rels" file in it.
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the folder or the ".rels" file
+     * @throws IOException If unable to create the folder or the ".rels" file
      */
     private function createRelsFolderAndFile(): self
     {
@@ -479,7 +581,7 @@ private function createRelsFolderAndFile(): self
     /**
      * Creates the ".rels" file under the "_rels" folder (under root).
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the file
+     * @throws IOException If unable to create the file
      */
     private function createRelsFile(): self
     {
@@ -500,7 +602,7 @@ private function createRelsFile(): self
     /**
      * Creates the "docProps" folder under the root folder as well as the "app.xml" and "core.xml" files in it.
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the folder or one of the files
+     * @throws IOException If unable to create the folder or one of the files
      */
     private function createDocPropsFolderAndFiles(): self
     {
@@ -515,7 +617,7 @@ private function createDocPropsFolderAndFiles(): self
     /**
      * Creates the "app.xml" file under the "docProps" folder.
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the file
+     * @throws IOException If unable to create the file
      */
     private function createAppXmlFile(): self
     {
@@ -535,7 +637,7 @@ private function createAppXmlFile(): self
     /**
      * Creates the "core.xml" file under the "docProps" folder.
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the file
+     * @throws IOException If unable to create the file
      */
     private function createCoreXmlFile(): self
     {
@@ -557,7 +659,7 @@ private function createCoreXmlFile(): self
     /**
      * Creates the "xl" folder under the root folder as well as its subfolders.
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create at least one of the folders
+     * @throws IOException If unable to create at least one of the folders
      */
     private function createXlFolderAndSubFolders(): self
     {
@@ -573,7 +675,7 @@ private function createXlFolderAndSubFolders(): self
      * Creates the temp folder where specific sheets content will be written to.
      * This folder is not part of the final ODS file and is only used to be able to jump between sheets.
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the folder
+     * @throws IOException If unable to create the folder
      */
     private function createSheetsContentTempFolder(): self
     {
@@ -585,7 +687,7 @@ private function createSheetsContentTempFolder(): self
     /**
      * Creates the "_rels" folder under the "xl" folder.
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the folder
+     * @throws IOException If unable to create the folder
      */
     private function createXlRelsFolder(): self
     {
@@ -597,7 +699,7 @@ private function createXlRelsFolder(): self
     /**
      * Creates the "drawings" folder under the "xl" folder.
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the folder
+     * @throws IOException If unable to create the folder
      */
     private function createDrawingsFolder(): self
     {
@@ -609,7 +711,7 @@ private function createDrawingsFolder(): self
     /**
      * Creates the "worksheets" folder under the "xl" folder.
      *
-     * @throws \OpenSpout\Common\Exception\IOException If unable to create the folder
+     * @throws IOException If unable to create the folder
      */
     private function createXlWorksheetsFolder(): self
     {
diff --git a/lib/openspout/src/Writer/XLSX/Manager/CommentsManager.php b/lib/openspout/src/Writer/XLSX/Manager/CommentsManager.php
index 525289c37827..b86c1a4744a6 100644
--- a/lib/openspout/src/Writer/XLSX/Manager/CommentsManager.php
+++ b/lib/openspout/src/Writer/XLSX/Manager/CommentsManager.php
@@ -64,11 +64,11 @@ final class CommentsManager
      */
     private array $drawingFilePointers = [];
 
-    private string $xlFolder;
+    private readonly string $xlFolder;
 
     private int $shapeId = 1024;
 
-    private Escaper\XLSX $stringsEscaper;
+    private readonly Escaper\XLSX $stringsEscaper;
 
     /**
      * @param string $xlFolder Path to the "xl" folder
diff --git a/lib/openspout/src/Writer/XLSX/Manager/SharedStringsManager.php b/lib/openspout/src/Writer/XLSX/Manager/SharedStringsManager.php
index 3b232c7b614e..8f472ebbdcb9 100644
--- a/lib/openspout/src/Writer/XLSX/Manager/SharedStringsManager.php
+++ b/lib/openspout/src/Writer/XLSX/Manager/SharedStringsManager.php
@@ -31,7 +31,7 @@ final class SharedStringsManager
     private int $numSharedStrings = 0;
 
     /** @var Escaper\XLSX Strings escaper */
-    private Escaper\XLSX $stringsEscaper;
+    private readonly Escaper\XLSX $stringsEscaper;
 
     /**
      * @param string       $xlFolder       Path to the "xl" folder
diff --git a/lib/openspout/src/Writer/XLSX/Manager/WorksheetManager.php b/lib/openspout/src/Writer/XLSX/Manager/WorksheetManager.php
index 2c43d638d550..94ca09c87e92 100644
--- a/lib/openspout/src/Writer/XLSX/Manager/WorksheetManager.php
+++ b/lib/openspout/src/Writer/XLSX/Manager/WorksheetManager.php
@@ -17,6 +17,7 @@
 use OpenSpout\Writer\Common\Manager\Style\StyleMerger;
 use OpenSpout\Writer\Common\Manager\WorksheetManagerInterface;
 use OpenSpout\Writer\XLSX\Helper\DateHelper;
+use OpenSpout\Writer\XLSX\Helper\DateIntervalHelper;
 use OpenSpout\Writer\XLSX\Manager\Style\StyleManager;
 use OpenSpout\Writer\XLSX\Options;
 
@@ -35,24 +36,24 @@ final class WorksheetManager implements WorksheetManagerInterface
     public const MAX_CHARACTERS_PER_CELL = 32767;
 
     /** @var CommentsManager Manages comments */
-    private CommentsManager $commentsManager;
+    private readonly CommentsManager $commentsManager;
 
-    private Options $options;
+    private readonly Options $options;
 
     /** @var StyleManager Manages styles */
-    private StyleManager $styleManager;
+    private readonly StyleManager $styleManager;
 
     /** @var StyleMerger Helper to merge styles together */
-    private StyleMerger $styleMerger;
+    private readonly StyleMerger $styleMerger;
 
     /** @var SharedStringsManager Helper to write shared strings */
-    private SharedStringsManager $sharedStringsManager;
+    private readonly SharedStringsManager $sharedStringsManager;
 
     /** @var XLSXEscaper Strings escaper */
-    private XLSXEscaper $stringsEscaper;
+    private readonly XLSXEscaper $stringsEscaper;
 
     /** @var StringHelper String helper */
-    private StringHelper $stringHelper;
+    private readonly StringHelper $stringHelper;
 
     /**
      * WorksheetManager constructor.
@@ -200,6 +201,8 @@ private function getCellXML(int $rowIndexOneBased, int $columnIndexZeroBased, Ce
             $cellXML .= '><f>'.substr($cell->getValue(), 1).'</f></c>';
         } elseif ($cell instanceof Cell\DateTimeCell) {
             $cellXML .= '><v>'.DateHelper::toExcel($cell->getValue()).'</v></c>';
+        } elseif ($cell instanceof Cell\DateIntervalCell) {
+            $cellXML .= '><v>'.DateIntervalHelper::toExcel($cell->getValue()).'</v></c>';
         } elseif ($cell instanceof Cell\ErrorCell) {
             // only writes the error value if it's a string
             $cellXML .= ' t="e"><v>'.$cell->getRawValue().'</v></c>';
diff --git a/lib/openspout/src/Writer/XLSX/MergeCell.php b/lib/openspout/src/Writer/XLSX/MergeCell.php
index 3d342df529fa..02e23438bc75 100644
--- a/lib/openspout/src/Writer/XLSX/MergeCell.php
+++ b/lib/openspout/src/Writer/XLSX/MergeCell.php
@@ -17,11 +17,10 @@ final class MergeCell
      * @param positive-int   $bottomRightRow
      */
     public function __construct(
-        public int $sheetIndex,
-        public int $topLeftColumn,
-        public int $topLeftRow,
-        public int $bottomRightColumn,
-        public int $bottomRightRow,
-    ) {
-    }
+        public readonly int $sheetIndex,
+        public readonly int $topLeftColumn,
+        public readonly int $topLeftRow,
+        public readonly int $bottomRightColumn,
+        public readonly int $bottomRightRow,
+    ) {}
 }
diff --git a/lib/openspout/src/Writer/XLSX/Options.php b/lib/openspout/src/Writer/XLSX/Options.php
index 6bfd2f44419c..7f27a02b6bfc 100644
--- a/lib/openspout/src/Writer/XLSX/Options.php
+++ b/lib/openspout/src/Writer/XLSX/Options.php
@@ -6,6 +6,9 @@
 
 use OpenSpout\Common\Entity\Style\Style;
 use OpenSpout\Writer\Common\AbstractOptions;
+use OpenSpout\Writer\XLSX\Options\HeaderFooter;
+use OpenSpout\Writer\XLSX\Options\PageMargin;
+use OpenSpout\Writer\XLSX\Options\PageSetup;
 
 final class Options extends AbstractOptions
 {
@@ -17,6 +20,12 @@ final class Options extends AbstractOptions
     /** @var MergeCell[] */
     private array $MERGE_CELLS = [];
 
+    private ?PageMargin $pageMargin = null;
+
+    private ?PageSetup $pageSetup = null;
+
+    private ?HeaderFooter $headerFooter = null;
+
     public function __construct()
     {
         parent::__construct();
@@ -63,4 +72,34 @@ public function getMergeCells(): array
     {
         return $this->MERGE_CELLS;
     }
+
+    public function setPageMargin(PageMargin $pageMargin): void
+    {
+        $this->pageMargin = $pageMargin;
+    }
+
+    public function getPageMargin(): ?PageMargin
+    {
+        return $this->pageMargin;
+    }
+
+    public function setPageSetup(PageSetup $pageSetup): void
+    {
+        $this->pageSetup = $pageSetup;
+    }
+
+    public function getPageSetup(): ?PageSetup
+    {
+        return $this->pageSetup;
+    }
+
+    public function setHeaderFooter(HeaderFooter $headerFooter): void
+    {
+        $this->headerFooter = $headerFooter;
+    }
+
+    public function getHeaderFooter(): ?HeaderFooter
+    {
+        return $this->headerFooter;
+    }
 }
diff --git a/lib/openspout/src/Writer/XLSX/Options/HeaderFooter.php b/lib/openspout/src/Writer/XLSX/Options/HeaderFooter.php
new file mode 100644
index 000000000000..cda9dde390b3
--- /dev/null
+++ b/lib/openspout/src/Writer/XLSX/Options/HeaderFooter.php
@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenSpout\Writer\XLSX\Options;
+
+final class HeaderFooter
+{
+    public function __construct(
+        public readonly ?string $oddHeader = null,
+        public readonly ?string $oddFooter = null,
+        public readonly ?string $evenHeader = null,
+        public readonly ?string $evenFooter = null,
+        public readonly bool $differentOddEven = false,
+    ) {}
+}
diff --git a/lib/openspout/src/Writer/XLSX/Options/PageMargin.php b/lib/openspout/src/Writer/XLSX/Options/PageMargin.php
new file mode 100644
index 000000000000..4b4ce3b832e9
--- /dev/null
+++ b/lib/openspout/src/Writer/XLSX/Options/PageMargin.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenSpout\Writer\XLSX\Options;
+
+final class PageMargin
+{
+    public function __construct(
+        public readonly float $top = 0.75,
+        public readonly float $right = 0.7,
+        public readonly float $bottom = 0.75,
+        public readonly float $left = 0.7,
+        public readonly float $header = 0.3,
+        public readonly float $footer = 0.3
+    ) {}
+}
diff --git a/lib/openspout/src/Writer/XLSX/Options/PageOrientation.php b/lib/openspout/src/Writer/XLSX/Options/PageOrientation.php
new file mode 100644
index 000000000000..0511785ce64a
--- /dev/null
+++ b/lib/openspout/src/Writer/XLSX/Options/PageOrientation.php
@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenSpout\Writer\XLSX\Options;
+
+enum PageOrientation: string
+{
+    case PORTRAIT = 'portrait';
+    case LANDSCAPE = 'landscape';
+}
diff --git a/lib/openspout/src/Writer/XLSX/Options/PageSetup.php b/lib/openspout/src/Writer/XLSX/Options/PageSetup.php
new file mode 100644
index 000000000000..8b63622650ee
--- /dev/null
+++ b/lib/openspout/src/Writer/XLSX/Options/PageSetup.php
@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenSpout\Writer\XLSX\Options;
+
+final class PageSetup
+{
+    public readonly bool $fitToPage;
+
+    public function __construct(
+        public readonly ?PageOrientation $pageOrientation,
+        public readonly ?PaperSize $paperSize,
+        public readonly ?int $fitToHeight = null,
+        public readonly ?int $fitToWidth = null,
+    ) {
+        $this->fitToPage = null !== $fitToHeight || null !== $fitToWidth;
+    }
+}
diff --git a/lib/openspout/src/Writer/XLSX/Options/PaperSize.php b/lib/openspout/src/Writer/XLSX/Options/PaperSize.php
new file mode 100644
index 000000000000..2eb24910665b
--- /dev/null
+++ b/lib/openspout/src/Writer/XLSX/Options/PaperSize.php
@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenSpout\Writer\XLSX\Options;
+
+enum PaperSize: int
+{
+    case Letter = 1;
+    case Tabloid = 3;
+    case Ledger = 4;
+    case Legal = 5;
+    case Statement = 6;
+    case Executive = 7;
+    case A3 = 8;
+    case A4 = 9;
+    case A5 = 11;
+    case B4 = 12;
+    case B5 = 13;
+    case Folio = 14;
+    case Quarto = 15;
+    case Standard = 16;
+    case Note = 18;
+    case C = 24;
+    case D = 25;
+    case E = 26;
+    case DL = 27;
+    case C5 = 28;
+    case C3 = 29;
+    case C4 = 30;
+    case C6 = 31;
+    case C65 = 32;
+    case B6 = 35;
+}
diff --git a/lib/openspout/src/Writer/XLSX/Writer.php b/lib/openspout/src/Writer/XLSX/Writer.php
index 3fdbecb5cd9b..cab0676a00eb 100644
--- a/lib/openspout/src/Writer/XLSX/Writer.php
+++ b/lib/openspout/src/Writer/XLSX/Writer.php
@@ -23,7 +23,7 @@ final class Writer extends AbstractWriterMultiSheets
     /** @var string Content-Type value for the header */
     protected static string $headerContentType = 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet';
 
-    private Options $options;
+    private readonly Options $options;
 
     public function __construct(?Options $options = null)
     {
diff --git a/lib/outputrenderers.php b/lib/outputrenderers.php
index 193119a3c81f..5852068f61b3 100644
--- a/lib/outputrenderers.php
+++ b/lib/outputrenderers.php
@@ -35,6 +35,8 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
+use core\di;
+use core\hook\manager as hook_manager;
 use core\output\named_templatable;
 use core_completion\cm_completion_details;
 use core_course\output\activity_information;
@@ -698,33 +700,37 @@ public function standard_head_html() {
             $this->page->blocks->ensure_content_created($region, $this);
         }
 
-        $output = '';
-
         // Give plugins an opportunity to add any head elements. The callback
         // must always return a string containing valid html head content.
 
-        $hook = new \core\hook\output\standard_head_html_prepend();
-        \core\hook\manager::get_instance()->dispatch($hook);
+        $hook = new \core\hook\output\before_standard_head_html_generation($this);
+        di::get(hook_manager::class)->dispatch($hook);
         $hook->process_legacy_callbacks();
-        $output .= $hook->get_output();
 
         // Allow a url_rewrite plugin to setup any dynamic head content.
         if (isset($CFG->urlrewriteclass) && !isset($CFG->upgraderunning)) {
             $class = $CFG->urlrewriteclass;
-            $output .= $class::html_head_setup();
+            $hook->add_html($class::html_head_setup());
         }
 
-        $output .= '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />' . "\n";
-        $output .= '<meta name="keywords" content="moodle, ' . $this->page->title . '" />' . "\n";
+        $hook->add_html('<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />' . "\n");
+        $hook->add_html('<meta name="keywords" content="moodle, ' . $this->page->title . '" />' . "\n");
         // This is only set by the {@link redirect()} method
-        $output .= $this->metarefreshtag;
+        $hook->add_html($this->metarefreshtag);
 
         // Check if a periodic refresh delay has been set and make sure we arn't
         // already meta refreshing
         if ($this->metarefreshtag=='' && $this->page->periodicrefreshdelay!==null) {
-            $output .= '<meta http-equiv="refresh" content="'.$this->page->periodicrefreshdelay.';url='.$this->page->url->out().'" />';
+            $hook->add_html(
+                html_writer::empty_tag('meta', [
+                    'http-equiv' => 'refresh',
+                    'content' => $this->page->periodicrefreshdelay . ';url='.$this->page->url->out(),
+                ]),
+            );
         }
 
+        $output = $hook->get_output();
+
         // Set up help link popups for all links with the helptooltip class
         $this->page->requires->js_init_call('M.util.help_popups.setup');
 
diff --git a/lib/phpmailer/README.md b/lib/phpmailer/README.md
index 53e66f11498f..e3e4ecff3db5 100644
--- a/lib/phpmailer/README.md
+++ b/lib/phpmailer/README.md
@@ -47,7 +47,7 @@ This software is distributed under the [LGPL 2.1](http://www.gnu.org/licenses/lg
 PHPMailer is available on [Packagist](https://packagist.org/packages/phpmailer/phpmailer) (using semantic versioning), and installation via [Composer](https://getcomposer.org) is the recommended way to install PHPMailer. Just add this line to your `composer.json` file:
 
 ```json
-"phpmailer/phpmailer": "^6.8.0"
+"phpmailer/phpmailer": "^6.9.1"
 ```
 
 or run
@@ -58,7 +58,8 @@ composer require phpmailer/phpmailer
 
 Note that the `vendor` folder and the `vendor/autoload.php` script are generated by Composer; they are not part of PHPMailer.
 
-If you want to use the Gmail XOAUTH2 authentication class, you will also need to add a dependency on the `league/oauth2-client` package in your `composer.json`.
+If you want to use XOAUTH2 authentication, you will also need to add a dependency on the `league/oauth2-client` and appropriate service adapters package in your `composer.json`, or take a look at
+by @decomplexity's [SendOauth2 wrapper](https://github.com/decomplexity/SendOauth2), especially if you're using Microsoft services.
 
 Alternatively, if you're not using Composer, you
 can [download PHPMailer as a zip file](https://github.com/PHPMailer/PHPMailer/archive/master.zip), (note that docs and examples are not included in the zip file), then copy the contents of the PHPMailer folder into one of the `include_path` directories specified in your PHP configuration and load each class file manually:
@@ -150,7 +151,7 @@ PHPMailer defaults to English, but in the [language](https://github.com/PHPMaile
 $mail->setLanguage('fr', '/optional/path/to/language/directory/');
 ```
 
-We welcome corrections and new languages – if you're looking for corrections, run the [PHPMailerLangTest.php](https://github.com/PHPMailer/PHPMailer/tree/master/test/PHPMailerLangTest.php) script in the tests folder and it will show any missing translations.
+We welcome corrections and new languages – if you're looking for corrections, run the [Language/TranslationCompletenessTest.php](https://github.com/PHPMailer/PHPMailer/blob/master/test/Language/TranslationCompletenessTest.php) script in the tests folder and it will show any missing translations.
 
 ## Documentation
 Start reading at the [GitHub wiki](https://github.com/PHPMailer/PHPMailer/wiki). If you're having trouble, head for [the troubleshooting guide](https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting) as it's frequently updated.
diff --git a/lib/phpmailer/VERSION b/lib/phpmailer/VERSION
index 8a1c5c7e99c1..dc3829f5e077 100644
--- a/lib/phpmailer/VERSION
+++ b/lib/phpmailer/VERSION
@@ -1 +1 @@
-6.8.0
\ No newline at end of file
+6.9.1
diff --git a/lib/phpmailer/language/phpmailer.lang-as.php b/lib/phpmailer/language/phpmailer.lang-as.php
new file mode 100644
index 000000000000..327dfbafaf25
--- /dev/null
+++ b/lib/phpmailer/language/phpmailer.lang-as.php
@@ -0,0 +1,35 @@
+<?php
+
+/**
+ * Assamese PHPMailer language file: refer to English translation for definitive list
+ * @package PHPMailer
+ * @author Manish Sarkar <manish.n.manish@gmail.com>
+ */
+
+$PHPMAILER_LANG['authenticate']         = 'SMTP ত্ৰুটি: প্ৰমাণীকৰণ কৰিব নোৱাৰি';
+$PHPMAILER_LANG['buggy_php']            = 'আপোনাৰ PHP সংস্কৰণ এটা বাগৰ দ্বাৰা প্ৰভাৱিত হয় যাৰ ফলত নষ্ট বাৰ্তা হব পাৰে । ইয়াক সমাধান কৰিবলে, প্ৰেৰণ কৰিবলে SMTP ব্যৱহাৰ কৰক, আপোনাৰ php.ini ত mail.add_x_header বিকল্প নিষ্ক্ৰিয় কৰক, MacOS বা Linux লৈ সলনি কৰক, বা আপোনাৰ PHP সংস্কৰণ 7.0.17+ বা 7.1.3+ লৈ সলনি কৰক ।';
+$PHPMAILER_LANG['connect_host']         = 'SMTP ত্ৰুটি: SMTP চাৰ্ভাৰৰ সৈতে সংযোগ কৰিবলে অক্ষম';
+$PHPMAILER_LANG['data_not_accepted']    = 'SMTP ত্ৰুটি: তথ্য গ্ৰহণ কৰা হোৱা নাই';
+$PHPMAILER_LANG['empty_message']        = 'বাৰ্তাৰ মূখ্য অংশ খালী।';
+$PHPMAILER_LANG['encoding']             = 'অজ্ঞাত এনকোডিং: ';
+$PHPMAILER_LANG['execute']              = 'এক্সিকিউট কৰিব নোৱাৰি: ';
+$PHPMAILER_LANG['extension_missing']    = 'সম্প্ৰসাৰণ নোহোৱা হৈছে: ';
+$PHPMAILER_LANG['file_access']          = 'ফাইল অভিগম কৰিবলে অক্ষম: ';
+$PHPMAILER_LANG['file_open']            = 'ফাইল ত্ৰুটি: ফাইল খোলিবলৈ অক্ষম: ';
+$PHPMAILER_LANG['from_failed']          = 'নিম্নলিখিত প্ৰেৰকৰ ঠিকনা(সমূহ) ব্যৰ্থ: ';
+$PHPMAILER_LANG['instantiate']          = 'মেইল ফাংচনৰ এটা উদাহৰণ সৃষ্টি কৰিবলে অক্ষম';
+$PHPMAILER_LANG['invalid_address']      = 'প্ৰেৰণ কৰিব নোৱাৰি: অবৈধ ইমেইল ঠিকনা: ';
+$PHPMAILER_LANG['invalid_header']       = 'অবৈধ হেডাৰৰ নাম বা মান';
+$PHPMAILER_LANG['invalid_hostentry']    = 'অবৈধ হোষ্টেন্ট্ৰি: ';
+$PHPMAILER_LANG['invalid_host']         = 'অবৈধ হস্ট:';
+$PHPMAILER_LANG['mailer_not_supported'] = 'মেইলাৰ সমৰ্থিত নহয়।';
+$PHPMAILER_LANG['provide_address']      = 'আপুনি অন্ততঃ এটা গন্তব্য ইমেইল ঠিকনা দিব লাগিব';
+$PHPMAILER_LANG['recipients_failed']    = 'SMTP ত্ৰুটি: নিম্নলিখিত গন্তব্যস্থানসমূহ ব্যৰ্থ: ';
+$PHPMAILER_LANG['signing']              = 'স্বাক্ষৰ কৰাত ব্যৰ্থ: ';
+$PHPMAILER_LANG['smtp_code']            = 'SMTP কড: ';
+$PHPMAILER_LANG['smtp_code_ex']         = 'অতিৰিক্ত SMTP তথ্য: ';
+$PHPMAILER_LANG['smtp_detail']          = 'বিৱৰণ:';
+$PHPMAILER_LANG['smtp_connect_failed']  = 'SMTP সংযোগ() ব্যৰ্থ';
+$PHPMAILER_LANG['smtp_error']           = 'SMTP চাৰ্ভাৰৰ ত্ৰুটি: ';
+$PHPMAILER_LANG['variable_set']         = 'চলক নিৰ্ধাৰণ কৰিব পৰা নগল: ';
+$PHPMAILER_LANG['extension_missing']    = 'অনুপস্থিত সম্প্ৰসাৰণ: ';
diff --git a/lib/phpmailer/language/phpmailer.lang-bn.php b/lib/phpmailer/language/phpmailer.lang-bn.php
new file mode 100644
index 000000000000..473651080410
--- /dev/null
+++ b/lib/phpmailer/language/phpmailer.lang-bn.php
@@ -0,0 +1,35 @@
+<?php
+
+/**
+ * Bengali PHPMailer language file: refer to English translation for definitive list
+ * @package PHPMailer
+ * @author Manish Sarkar <manish.n.manish@gmail.com>
+ */
+
+$PHPMAILER_LANG['authenticate']         = 'SMTP ত্রুটি: প্রমাণীকরণ করতে অক্ষম৷';
+$PHPMAILER_LANG['buggy_php']            = 'আপনার PHP সংস্করণ একটি বাগ দ্বারা প্রভাবিত হয় যার ফলে দূষিত বার্তা হতে পারে। এটি ঠিক করতে, পাঠাতে SMTP ব্যবহার করুন, আপনার php.ini এ mail.add_x_header বিকল্পটি নিষ্ক্রিয় করুন, MacOS বা Linux-এ স্যুইচ করুন, অথবা আপনার PHP সংস্করণকে 7.0.17+ বা 7.1.3+ এ পরিবর্তন করুন।';
+$PHPMAILER_LANG['connect_host']         = 'SMTP ত্রুটি: SMTP সার্ভারের সাথে সংযোগ করতে অক্ষম৷';
+$PHPMAILER_LANG['data_not_accepted']    = 'SMTP ত্রুটি: ডেটা গ্রহণ করা হয়নি৷';
+$PHPMAILER_LANG['empty_message']        = 'বার্তার অংশটি খালি।';
+$PHPMAILER_LANG['encoding']             = 'অজানা এনকোডিং: ';
+$PHPMAILER_LANG['execute']              = 'নির্বাহ করতে অক্ষম: ';
+$PHPMAILER_LANG['extension_missing']    = 'এক্সটেনশন অনুপস্থিত:';
+$PHPMAILER_LANG['file_access']          = 'ফাইল অ্যাক্সেস করতে অক্ষম: ';
+$PHPMAILER_LANG['file_open']            = 'ফাইল ত্রুটি: ফাইল খুলতে অক্ষম: ';
+$PHPMAILER_LANG['from_failed']          = 'নিম্নলিখিত প্রেরকের ঠিকানা(গুলি) ব্যর্থ হয়েছে: ';
+$PHPMAILER_LANG['instantiate']          = 'মেল ফাংশনের একটি উদাহরণ তৈরি করতে অক্ষম৷';
+$PHPMAILER_LANG['invalid_address']      = 'পাঠাতে অক্ষম: অবৈধ ইমেল ঠিকানা: ';
+$PHPMAILER_LANG['invalid_header']       = 'অবৈধ হেডার নাম বা মান';
+$PHPMAILER_LANG['invalid_hostentry']    = 'অবৈধ হোস্টেন্ট্রি: ';
+$PHPMAILER_LANG['invalid_host']         = 'অবৈধ হোস্ট:';
+$PHPMAILER_LANG['mailer_not_supported'] = 'মেইলার সমর্থিত নয়।';
+$PHPMAILER_LANG['provide_address']      = 'আপনাকে অবশ্যই অন্তত একটি গন্তব্য ইমেল ঠিকানা প্রদান করতে হবে৷';
+$PHPMAILER_LANG['recipients_failed']    = 'SMTP ত্রুটি: নিম্নলিখিত গন্তব্যগুলি ব্যর্থ হয়েছে: ';
+$PHPMAILER_LANG['signing']              = 'স্বাক্ষর করতে ব্যর্থ হয়েছে: ';
+$PHPMAILER_LANG['smtp_code']            = 'SMTP কোড: ';
+$PHPMAILER_LANG['smtp_code_ex']         = 'অতিরিক্ত SMTP তথ্য:';
+$PHPMAILER_LANG['smtp_detail']          = 'বর্ণনা: ';
+$PHPMAILER_LANG['smtp_connect_failed']  = 'SMTP সংযোগ() ব্যর্থ হয়েছে৷';
+$PHPMAILER_LANG['smtp_error']           = 'SMTP সার্ভার ত্রুটি: ';
+$PHPMAILER_LANG['variable_set']         = 'পরিবর্তনশীল সেট করা যায়নি: ';
+$PHPMAILER_LANG['extension_missing']    = 'অনুপস্থিত এক্সটেনশন: ';
diff --git a/lib/phpmailer/language/phpmailer.lang-da.php b/lib/phpmailer/language/phpmailer.lang-da.php
index 8b7b38a6ee5f..db9a1ef5b02c 100644
--- a/lib/phpmailer/language/phpmailer.lang-da.php
+++ b/lib/phpmailer/language/phpmailer.lang-da.php
@@ -9,6 +9,7 @@
  */
 
 $PHPMAILER_LANG['authenticate']         = 'SMTP fejl: Login mislykkedes.';
+$PHPMAILER_LANG['buggy_php']            = 'Din version af PHP er berørt af en fejl, som gør at dine beskeder muligvis vises forkert. For at rette dette kan du skifte til SMTP, slå mail.add_x_header headeren i din php.ini fil fra, skifte til MacOS eller Linux eller opgradere din version af PHP til 7.0.17+ eller 7.1.3+.';
 $PHPMAILER_LANG['connect_host']         = 'SMTP fejl: Forbindelse til SMTP serveren kunne ikke oprettes.';
 $PHPMAILER_LANG['data_not_accepted']    = 'SMTP fejl: Data blev ikke accepteret.';
 $PHPMAILER_LANG['empty_message']        = 'Meddelelsen er uden indhold';
diff --git a/lib/phpmailer/language/phpmailer.lang-fi.php b/lib/phpmailer/language/phpmailer.lang-fi.php
index 243c05489e75..6d1e6373901c 100644
--- a/lib/phpmailer/language/phpmailer.lang-fi.php
+++ b/lib/phpmailer/language/phpmailer.lang-fi.php
@@ -20,7 +20,6 @@
 $PHPMAILER_LANG['mailer_not_supported'] = 'postivälitintyyppiä ei tueta.';
 $PHPMAILER_LANG['provide_address']      = 'Aseta vähintään yksi vastaanottajan sähk&ouml;postiosoite.';
 $PHPMAILER_LANG['recipients_failed']    = 'SMTP-virhe: seuraava vastaanottaja osoite on virheellinen.';
-$PHPMAILER_LANG['encoding']             = 'Tuntematon koodaustyyppi: ';
 //$PHPMAILER_LANG['signing']              = 'Signing Error: ';
 //$PHPMAILER_LANG['smtp_connect_failed']  = 'SMTP Connect() failed.';
 //$PHPMAILER_LANG['smtp_error']           = 'SMTP server error: ';
diff --git a/lib/phpmailer/language/phpmailer.lang-fr.php b/lib/phpmailer/language/phpmailer.lang-fr.php
index 38a7a8e7e5b6..0d367fcf885b 100644
--- a/lib/phpmailer/language/phpmailer.lang-fr.php
+++ b/lib/phpmailer/language/phpmailer.lang-fr.php
@@ -35,4 +35,3 @@
 $PHPMAILER_LANG['smtp_detail']          = 'Détails : ';
 $PHPMAILER_LANG['smtp_error']           = 'Erreur du serveur SMTP : ';
 $PHPMAILER_LANG['variable_set']         = 'Impossible d’initialiser ou de réinitialiser une variable : ';
-$PHPMAILER_LANG['extension_missing']    = 'Extension manquante : ';
diff --git a/lib/phpmailer/language/phpmailer.lang-nb.php b/lib/phpmailer/language/phpmailer.lang-nb.php
index 65793ce2b9fd..c9621a164f7c 100644
--- a/lib/phpmailer/language/phpmailer.lang-nb.php
+++ b/lib/phpmailer/language/phpmailer.lang-nb.php
@@ -5,22 +5,29 @@
  * @package PHPMailer
  */
 
-$PHPMAILER_LANG['authenticate']         = 'SMTP Feil: Kunne ikke autentisere.';
-$PHPMAILER_LANG['connect_host']         = 'SMTP Feil: Kunne ikke koble til SMTP tjener.';
-$PHPMAILER_LANG['data_not_accepted']    = 'SMTP Feil: Datainnhold ikke akseptert.';
-$PHPMAILER_LANG['empty_message']        = 'Meldingsinnhold mangler';
-$PHPMAILER_LANG['encoding']             = 'Ukjent koding: ';
-$PHPMAILER_LANG['execute']              = 'Kunne ikke utføre: ';
-$PHPMAILER_LANG['file_access']          = 'Får ikke tilgang til filen: ';
-$PHPMAILER_LANG['file_open']            = 'Fil Feil: Kunne ikke åpne filen: ';
-$PHPMAILER_LANG['from_failed']          = 'Følgende Frå adresse feilet: ';
-$PHPMAILER_LANG['instantiate']          = 'Kunne ikke initialisere post funksjon.';
-$PHPMAILER_LANG['invalid_address']      = 'Ugyldig adresse: ';
-$PHPMAILER_LANG['mailer_not_supported'] = ' sender er ikke støttet.';
-$PHPMAILER_LANG['provide_address']      = 'Du må opppgi minst en mottakeradresse.';
-$PHPMAILER_LANG['recipients_failed']    = 'SMTP Feil: Følgende mottakeradresse feilet: ';
-$PHPMAILER_LANG['signing']              = 'Signering Feil: ';
-$PHPMAILER_LANG['smtp_connect_failed']  = 'SMTP connect() feilet.';
-$PHPMAILER_LANG['smtp_error']           = 'SMTP server feil: ';
-$PHPMAILER_LANG['variable_set']         = 'Kan ikke skrive eller omskrive variabel: ';
-$PHPMAILER_LANG['extension_missing']    = 'Utvidelse mangler: ';
+ $PHPMAILER_LANG['authenticate']         = 'SMTP-feil: Kunne ikke autentiseres.';
+ $PHPMAILER_LANG['buggy_php']            = 'Din versjon av PHP er berørt av en feil som kan føre til ødelagte meldinger. For å løse problemet kan du bytte til SMTP, deaktivere alternativet mail.add_x_header i php.ini, bytte til MacOS eller Linux eller oppgradere PHP til versjon 7.0.17+ eller 7.1.3+.';
+ $PHPMAILER_LANG['connect_host']         = 'SMTP-feil: Kunne ikke koble til SMTP-vert.';
+ $PHPMAILER_LANG['data_not_accepted']    = 'SMTP-feil: data ikke akseptert.';
+ $PHPMAILER_LANG['empty_message']        = 'Meldingstekst mangler';
+ $PHPMAILER_LANG['encoding']             = 'Ukjent koding: ';
+ $PHPMAILER_LANG['execute']              = 'Kunne ikke utføres: ';
+ $PHPMAILER_LANG['extension_missing']    = 'Utvidelse mangler: ';
+ $PHPMAILER_LANG['file_access']          = 'Kunne ikke få tilgang til filen: ';
+ $PHPMAILER_LANG['file_open']            = 'Feil i fil: Kunne ikke åpne filen: ';
+ $PHPMAILER_LANG['from_failed']          = 'Følgende Fra-adresse mislyktes: ';
+ $PHPMAILER_LANG['instantiate']          = 'Kunne ikke instansiere e-postfunksjonen.';
+ $PHPMAILER_LANG['invalid_address']      = 'Ugyldig adresse: ';
+ $PHPMAILER_LANG['invalid_header']       = 'Ugyldig headernavn eller verdi';
+ $PHPMAILER_LANG['invalid_hostentry']    = 'Ugyldig vertsinngang: ';
+ $PHPMAILER_LANG['invalid_host']         = 'Ugyldig vert: ';
+ $PHPMAILER_LANG['mailer_not_supported'] = ' sender er ikke støttet.';
+ $PHPMAILER_LANG['provide_address']      = 'Du må oppgi minst én mottaker-e-postadresse.';
+ $PHPMAILER_LANG['recipients_failed']    = 'SMTP Feil: Følgende mottakeradresse feilet: ';
+ $PHPMAILER_LANG['signing']              = 'Signeringsfeil: ';
+ $PHPMAILER_LANG['smtp_code']            = 'SMTP-kode: ';
+ $PHPMAILER_LANG['smtp_code_ex']         = 'Ytterligere SMTP-info: ';
+ $PHPMAILER_LANG['smtp_connect_failed']  = 'SMTP connect() mislyktes.';
+ $PHPMAILER_LANG['smtp_detail']          = 'Detaljer: ';
+ $PHPMAILER_LANG['smtp_error']           = 'SMTP-serverfeil: ';
+ $PHPMAILER_LANG['variable_set']         = 'Kan ikke angi eller tilbakestille variabel: ';
diff --git a/lib/phpmailer/language/phpmailer.lang-pl.php b/lib/phpmailer/language/phpmailer.lang-pl.php
index b0469fdb7a84..cb7b2c21076f 100644
--- a/lib/phpmailer/language/phpmailer.lang-pl.php
+++ b/lib/phpmailer/language/phpmailer.lang-pl.php
@@ -6,21 +6,28 @@
  */
 
 $PHPMAILER_LANG['authenticate']         = 'Błąd SMTP: Nie można przeprowadzić uwierzytelnienia.';
+$PHPMAILER_LANG['buggy_php']            = 'Twoja wersja PHP zawiera błąd, który może powodować uszkodzenie wiadomości. Aby go naprawić, przełącz się na wysyłanie za pomocą SMTP, wyłącz opcję mail.add_x_header w php.ini, przełącz się na MacOS lub Linux lub zaktualizuj PHP do wersji 7.0.17+ lub 7.1.3+.';
 $PHPMAILER_LANG['connect_host']         = 'Błąd SMTP: Nie można połączyć się z wybranym hostem.';
 $PHPMAILER_LANG['data_not_accepted']    = 'Błąd SMTP: Dane nie zostały przyjęte.';
 $PHPMAILER_LANG['empty_message']        = 'Wiadomość jest pusta.';
 $PHPMAILER_LANG['encoding']             = 'Błędny sposób kodowania znaków: ';
 $PHPMAILER_LANG['execute']              = 'Nie można uruchomić: ';
+$PHPMAILER_LANG['extension_missing']    = 'Brakujące rozszerzenie: ';
 $PHPMAILER_LANG['file_access']          = 'Brak dostępu do pliku: ';
 $PHPMAILER_LANG['file_open']            = 'Nie można otworzyć pliku: ';
 $PHPMAILER_LANG['from_failed']          = 'Następujący adres nadawcy jest nieprawidłowy lub nie istnieje: ';
 $PHPMAILER_LANG['instantiate']          = 'Nie można wywołać funkcji mail(). Sprawdź konfigurację serwera.';
 $PHPMAILER_LANG['invalid_address']      = 'Nie można wysłać wiadomości, ' . 'następujący adres odbiorcy jest nieprawidłowy lub nie istnieje: ';
+$PHPMAILER_LANG['invalid_header']       = 'Nieprawidłowa nazwa lub wartość nagłówka';
+$PHPMAILER_LANG['invalid_hostentry']    = 'Nieprawidłowy wpis hosta: ';
+$PHPMAILER_LANG['invalid_host']         = 'Nieprawidłowy host: ';
 $PHPMAILER_LANG['provide_address']      = 'Należy podać prawidłowy adres email odbiorcy.';
 $PHPMAILER_LANG['mailer_not_supported'] = 'Wybrana metoda wysyłki wiadomości nie jest obsługiwana.';
 $PHPMAILER_LANG['recipients_failed']    = 'Błąd SMTP: Następujący odbiorcy są nieprawidłowi lub nie istnieją: ';
 $PHPMAILER_LANG['signing']              = 'Błąd podpisywania wiadomości: ';
+$PHPMAILER_LANG['smtp_code']            = 'Kod SMTP: ';
+$PHPMAILER_LANG['smtp_code_ex']         = 'Dodatkowe informacje SMTP: ';
 $PHPMAILER_LANG['smtp_connect_failed']  = 'Wywołanie funkcji SMTP Connect() zostało zakończone niepowodzeniem.';
+$PHPMAILER_LANG['smtp_detail']          = 'Szczegóły: ';
 $PHPMAILER_LANG['smtp_error']           = 'Błąd SMTP: ';
 $PHPMAILER_LANG['variable_set']         = 'Nie można ustawić lub zmodyfikować zmiennej: ';
-$PHPMAILER_LANG['extension_missing']    = 'Brakujące rozszerzenie: ';
diff --git a/lib/phpmailer/language/phpmailer.lang-si.php b/lib/phpmailer/language/phpmailer.lang-si.php
new file mode 100644
index 000000000000..dce502aa02f4
--- /dev/null
+++ b/lib/phpmailer/language/phpmailer.lang-si.php
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * Sinhalese PHPMailer language file: refer to English translation for definitive list
+ * @package PHPMailer
+ * @author Ayesh Karunaratne <ayesh@aye.sh>
+ */
+
+$PHPMAILER_LANG['authenticate']         = 'SMTP දෝෂය: සත්‍යාපනය අසාර්ථක විය.';
+$PHPMAILER_LANG['buggy_php']            = 'ඔබගේ PHP version එකෙහි පවතින දෝෂයක් නිසා email පණිවිඩ දෝෂ සහගත වීමේ හැකියාවක් ඇත. මෙය විසදීම සදහා SMTP භාවිතා කිරීම, mail.add_x_header INI setting එක අක්‍රීය කිරීම, MacOS හෝ Linux වලට මාරු වීම, හෝ ඔබගේ PHP version එක 7.0.17+ හෝ 7.1.3+ වලට අලුත් කිරීම කරගන්න.';
+$PHPMAILER_LANG['connect_host']         = 'SMTP දෝෂය: සම්බන්ධ වීමට නොහැකි විය.';
+$PHPMAILER_LANG['data_not_accepted']    = 'SMTP දෝෂය: දත්ත පිළිගනු නොලැබේ.';
+$PHPMAILER_LANG['empty_message']        = 'පණිවිඩ අන්තර්ගතය හිස්';
+$PHPMAILER_LANG['encoding']             = 'නොදන්නා කේතනය: ';
+$PHPMAILER_LANG['execute']              = 'ක්‍රියාත්මක කළ නොහැකි විය: ';
+$PHPMAILER_LANG['extension_missing']    = 'Extension එක නොමැත: ';
+$PHPMAILER_LANG['file_access']          = 'File එකට ප්‍රවේශ විය නොහැකි විය: ';
+$PHPMAILER_LANG['file_open']            = 'File දෝෂය: File එක විවෘත කළ නොහැක: ';
+$PHPMAILER_LANG['from_failed']          = 'පහත From ලිපිනයන් අසාර්ථක විය: ';
+$PHPMAILER_LANG['instantiate']          = 'mail function එක ක්‍රියාත්මක කළ නොහැක.';
+$PHPMAILER_LANG['invalid_address']      = 'වලංගු නොවන ලිපිනය: ';
+$PHPMAILER_LANG['invalid_header']       = 'වලංගු නොවන header නාමයක් හෝ අගයක්';
+$PHPMAILER_LANG['invalid_hostentry']    = 'වලංගු නොවන hostentry එකක්: ';
+$PHPMAILER_LANG['invalid_host']         = 'වලංගු නොවන host එකක්: ';
+$PHPMAILER_LANG['mailer_not_supported'] = ' mailer සහාය නොදක්වයි.';
+$PHPMAILER_LANG['provide_address']      = 'ඔබ අවම වශයෙන් එක් ලබන්නෙකුගේ ඊමේල් ලිපිනයක් සැපයිය යුතුය.';
+$PHPMAILER_LANG['recipients_failed']    = 'SMTP දෝෂය: පහත ලබන්නන් අසමත් විය: ';
+$PHPMAILER_LANG['signing']              = 'Sign කිරීමේ දෝෂය: ';
+$PHPMAILER_LANG['smtp_code']            = 'SMTP කේතය: ';
+$PHPMAILER_LANG['smtp_code_ex']         = 'අමතර SMTP තොරතුරු: ';
+$PHPMAILER_LANG['smtp_connect_failed']  = 'SMTP සම්බන්ධය අසාර්ථක විය.';
+$PHPMAILER_LANG['smtp_detail']          = 'තොරතුරු: ';
+$PHPMAILER_LANG['smtp_error']           = 'SMTP දෝෂය: ';
+$PHPMAILER_LANG['variable_set']         = 'Variable එක සැකසීමට හෝ නැවත සැකසීමට නොහැක: ';
diff --git a/lib/phpmailer/language/phpmailer.lang-zh_cn.php b/lib/phpmailer/language/phpmailer.lang-zh_cn.php
index 728a4994c523..03d491165b58 100644
--- a/lib/phpmailer/language/phpmailer.lang-zh_cn.php
+++ b/lib/phpmailer/language/phpmailer.lang-zh_cn.php
@@ -9,11 +9,13 @@
  */
 
 $PHPMAILER_LANG['authenticate']         = 'SMTP 错误：登录失败。';
+$PHPMAILER_LANG['buggy_php']            = '您的 PHP 版本存在漏洞，可能会导致消息损坏。为修复此问题，请切换到使用 SMTP 发送，在您的 php.ini 中禁用 mail.add_x_header 选项。切换到 MacOS 或 Linux，或将您的 PHP 升级到 7.0.17+ 或 7.1.3+ 版本。';
 $PHPMAILER_LANG['connect_host']         = 'SMTP 错误：无法连接到 SMTP 主机。';
 $PHPMAILER_LANG['data_not_accepted']    = 'SMTP 错误：数据不被接受。';
 $PHPMAILER_LANG['empty_message']        = '邮件正文为空。';
 $PHPMAILER_LANG['encoding']             = '未知编码：';
 $PHPMAILER_LANG['execute']              = '无法执行：';
+$PHPMAILER_LANG['extension_missing']    = '缺少扩展名：';
 $PHPMAILER_LANG['file_access']          = '无法访问文件：';
 $PHPMAILER_LANG['file_open']            = '文件错误：无法打开文件：';
 $PHPMAILER_LANG['from_failed']          = '发送地址错误：';
@@ -22,8 +24,13 @@
 $PHPMAILER_LANG['mailer_not_supported'] = '发信客户端不被支持。';
 $PHPMAILER_LANG['provide_address']      = '必须提供至少一个收件人地址。';
 $PHPMAILER_LANG['recipients_failed']    = 'SMTP 错误：收件人地址错误：';
-$PHPMAILER_LANG['signing']              = '登录失败：';
 $PHPMAILER_LANG['smtp_connect_failed']  = 'SMTP服务器连接失败。';
 $PHPMAILER_LANG['smtp_error']           = 'SMTP服务器出错：';
 $PHPMAILER_LANG['variable_set']         = '无法设置或重置变量：';
-$PHPMAILER_LANG['extension_missing']    = '丢失模块 Extension：';
+$PHPMAILER_LANG['invalid_header']       = '无效的标题名称或值';
+$PHPMAILER_LANG['invalid_hostentry']    = '无效的hostentry： ';
+$PHPMAILER_LANG['invalid_host']         = '无效的主机：';
+$PHPMAILER_LANG['signing']              = '签名错误：';
+$PHPMAILER_LANG['smtp_code']            = 'SMTP代码： ';
+$PHPMAILER_LANG['smtp_code_ex']         = '附加SMTP信息： ';
+$PHPMAILER_LANG['smtp_detail']          = '详情:';
diff --git a/lib/phpmailer/readme_moodle.txt b/lib/phpmailer/readme_moodle.txt
index ca6ff5973701..2b7bea3a96b4 100644
--- a/lib/phpmailer/readme_moodle.txt
+++ b/lib/phpmailer/readme_moodle.txt
@@ -1,10 +1,8 @@
-Description of PHPMailer 6.7.1 library import into Moodle
+Description of PHPMailer library import into Moodle
 
 We now use a vanilla version of phpmailer and do our customisations in a
 subclass.
 
-For more information on this version of PHPMailer, check out https://github.com/PHPMailer/PHPMailer/releases/tag/v6.7.1
-
 To upgrade this library:
 1. Download the latest release of PHPMailer in https://github.com/PHPMailer/PHPMailer/releases.
 2. Remove everything inside lib/phpmailer/ folder except README_MOODLE.txt, moodle_phpmailer.php and moodle_phpmailer_oauth.php.
diff --git a/lib/phpmailer/src/DSNConfigurator.php b/lib/phpmailer/src/DSNConfigurator.php
index ab707d2b4f55..566c9618f56e 100644
--- a/lib/phpmailer/src/DSNConfigurator.php
+++ b/lib/phpmailer/src/DSNConfigurator.php
@@ -80,9 +80,7 @@ private function parseDSN($dsn)
         $config = $this->parseUrl($dsn);
 
         if (false === $config || !isset($config['scheme']) || !isset($config['host'])) {
-            throw new Exception(
-                sprintf('Malformed DSN: "%s".', $dsn)
-            );
+            throw new Exception('Malformed DSN');
         }
 
         if (isset($config['query'])) {
diff --git a/lib/phpmailer/src/PHPMailer.php b/lib/phpmailer/src/PHPMailer.php
index a644d2cac710..ba4bcd472866 100644
--- a/lib/phpmailer/src/PHPMailer.php
+++ b/lib/phpmailer/src/PHPMailer.php
@@ -357,6 +357,13 @@ class PHPMailer
      */
     public $AuthType = '';
 
+    /**
+     * SMTP SMTPXClient command attibutes
+     *
+     * @var array
+     */
+    protected $SMTPXClient = [];
+
     /**
      * An implementation of the PHPMailer OAuthTokenProvider interface.
      *
@@ -750,7 +757,7 @@ class PHPMailer
      *
      * @var string
      */
-    const VERSION = '6.8.0';
+    const VERSION = '6.9.1';
 
     /**
      * Error severity: message only, continue processing.
@@ -795,7 +802,7 @@ class PHPMailer
      * The maximum line length supported by mail().
      *
      * Background: mail() will sometimes corrupt messages
-     * with headers headers longer than 65 chars, see #818.
+     * with headers longer than 65 chars, see #818.
      *
      * @var int
      */
@@ -1571,6 +1578,10 @@ public function preSend()
 
             //Validate From, Sender, and ConfirmReadingTo addresses
             foreach (['From', 'Sender', 'ConfirmReadingTo'] as $address_kind) {
+                if ($this->{$address_kind} === null) {
+                    $this->{$address_kind} = '';
+                    continue;
+                }
                 $this->{$address_kind} = trim($this->{$address_kind});
                 if (empty($this->{$address_kind})) {
                     continue;
@@ -1997,6 +2008,38 @@ public function setSMTPInstance(SMTP $smtp)
         return $this->smtp;
     }
 
+    /**
+     * Provide SMTP XCLIENT attributes
+     *
+     * @param string $name  Attribute name
+     * @param ?string $value Attribute value
+     *
+     * @return bool
+     */
+    public function setSMTPXclientAttribute($name, $value)
+    {
+        if (!in_array($name, SMTP::$xclient_allowed_attributes)) {
+            return false;
+        }
+        if (isset($this->SMTPXClient[$name]) && $value === null) {
+            unset($this->SMTPXClient[$name]);
+        } elseif ($value !== null) {
+            $this->SMTPXClient[$name] = $value;
+        }
+
+        return true;
+    }
+
+    /**
+     * Get SMTP XCLIENT attributes
+     *
+     * @return array
+     */
+    public function getSMTPXclientAttributes()
+    {
+        return $this->SMTPXClient;
+    }
+
     /**
      * Send mail via SMTP.
      * Returns false if there is a bad MAIL FROM, RCPT, or DATA input.
@@ -2025,6 +2068,9 @@ protected function smtpSend($header, $body)
         } else {
             $smtp_from = $this->Sender;
         }
+        if (count($this->SMTPXClient)) {
+            $this->smtp->xclient($this->SMTPXClient);
+        }
         if (!$this->smtp->mail($smtp_from)) {
             $this->setError($this->lang('from_failed') . $smtp_from . ' : ' . implode(',', $this->smtp->getError()));
             throw new Exception($this->ErrorInfo, self::STOP_CRITICAL);
@@ -2187,10 +2233,17 @@ public function smtpConnect($options = null)
                     $this->smtp->hello($hello);
                     //Automatically enable TLS encryption if:
                     //* it's not disabled
+                    //* we are not connecting to localhost
                     //* we have openssl extension
                     //* we are not already using SSL
                     //* the server offers STARTTLS
-                    if ($this->SMTPAutoTLS && $sslext && 'ssl' !== $secure && $this->smtp->getServerExt('STARTTLS')) {
+                    if (
+                        $this->SMTPAutoTLS &&
+                        $this->Host !== 'localhost' &&
+                        $sslext &&
+                        $secure !== 'ssl' &&
+                        $this->smtp->getServerExt('STARTTLS')
+                    ) {
                         $tls = true;
                     }
                     if ($tls) {
@@ -4047,6 +4100,79 @@ public function clearCustomHeaders()
         $this->CustomHeader = [];
     }
 
+    /**
+     * Clear a specific custom header by name or name and value.
+     * $name value can be overloaded to contain
+     * both header name and value (name:value).
+     *
+     * @param string      $name  Custom header name
+     * @param string|null $value Header value
+     *
+     * @return bool True if a header was replaced successfully
+     */
+    public function clearCustomHeader($name, $value = null)
+    {
+        if (null === $value && strpos($name, ':') !== false) {
+            //Value passed in as name:value
+            list($name, $value) = explode(':', $name, 2);
+        }
+        $name = trim($name);
+        $value = (null === $value) ? null : trim($value);
+
+        foreach ($this->CustomHeader as $k => $pair) {
+            if ($pair[0] == $name) {
+                // We remove the header if the value is not provided or it matches.
+                if (null === $value ||  $pair[1] == $value) {
+                    unset($this->CustomHeader[$k]);
+                }
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Replace a custom header.
+     * $name value can be overloaded to contain
+     * both header name and value (name:value).
+     *
+     * @param string      $name  Custom header name
+     * @param string|null $value Header value
+     *
+     * @return bool True if a header was replaced successfully
+     * @throws Exception
+     */
+    public function replaceCustomHeader($name, $value = null)
+    {
+        if (null === $value && strpos($name, ':') !== false) {
+            //Value passed in as name:value
+            list($name, $value) = explode(':', $name, 2);
+        }
+        $name = trim($name);
+        $value = (null === $value) ? '' : trim($value);
+
+        $replaced = false;
+        foreach ($this->CustomHeader as $k => $pair) {
+            if ($pair[0] == $name) {
+                if ($replaced) {
+                    unset($this->CustomHeader[$k]);
+                    continue;
+                }
+                if (strpbrk($name . $value, "\r\n") !== false) {
+                    if ($this->exceptions) {
+                        throw new Exception($this->lang('invalid_header'));
+                    }
+
+                    return false;
+                }
+                $this->CustomHeader[$k] = [$name, $value];
+                $replaced = true;
+            }
+        }
+
+        return true;
+    }
+
     /**
      * Add an error message to the error container.
      *
diff --git a/lib/phpmailer/src/SMTP.php b/lib/phpmailer/src/SMTP.php
index fc4b781a5fde..1b5b00771cf3 100644
--- a/lib/phpmailer/src/SMTP.php
+++ b/lib/phpmailer/src/SMTP.php
@@ -35,7 +35,7 @@ class SMTP
      *
      * @var string
      */
-    const VERSION = '6.8.0';
+    const VERSION = '6.9.1';
 
     /**
      * SMTP line break constant.
@@ -198,6 +198,18 @@ class SMTP
         'Mailjet' => '/[\d]{3} OK queued as (.*)/',
     ];
 
+    /**
+     * Allowed SMTP XCLIENT attributes.
+     * Must be allowed by the SMTP server. EHLO response is not checked.
+     *
+     * @see https://www.postfix.org/XCLIENT_README.html
+     *
+     * @var array
+     */
+    public static $xclient_allowed_attributes = [
+        'NAME', 'ADDR', 'PORT', 'PROTO', 'HELO', 'LOGIN', 'DESTADDR', 'DESTPORT'
+    ];
+
     /**
      * The last transaction ID issued in response to a DATA command,
      * if one was detected.
@@ -704,7 +716,7 @@ public function close()
      * Send an SMTP DATA command.
      * Issues a data command and sends the msg_data to the server,
      * finalizing the mail transaction. $msg_data is the message
-     * that is to be send with the headers. Each header needs to be
+     * that is to be sent with the headers. Each header needs to be
      * on a single line followed by a <CRLF> with the message headers
      * and the message body being separated by an additional <CRLF>.
      * Implements RFC 821: DATA <CRLF>.
@@ -732,7 +744,7 @@ public function data($msg_data)
         $lines = explode("\n", str_replace(["\r\n", "\r"], "\n", $msg_data));
 
         /* To distinguish between a complete RFC822 message and a plain message body, we check if the first field
-         * of the first line (':' separated) does not contain a space then it _should_ be a header and we will
+         * of the first line (':' separated) does not contain a space then it _should_ be a header, and we will
          * process all lines before a blank line as headers.
          */
 
@@ -971,6 +983,25 @@ public function recipient($address, $dsn = '')
         );
     }
 
+    /**
+     * Send SMTP XCLIENT command to server and check its return code.
+     *
+     * @return bool True on success
+     */
+    public function xclient(array $vars)
+    {
+        $xclient_options = "";
+        foreach ($vars as $key => $value) {
+            if (in_array($key, SMTP::$xclient_allowed_attributes)) {
+                $xclient_options .= " {$key}={$value}";
+            }
+        }
+        if (!$xclient_options) {
+            return true;
+        }
+        return $this->sendCommand('XCLIENT', 'XCLIENT' . $xclient_options, 250);
+    }
+
     /**
      * Send an SMTP RSET command.
      * Abort any transaction that is currently in progress.
diff --git a/lib/phpunit/classes/util.php b/lib/phpunit/classes/util.php
index f12010d47692..86e8fa47cbe2 100644
--- a/lib/phpunit/classes/util.php
+++ b/lib/phpunit/classes/util.php
@@ -973,7 +973,6 @@ public static function run_all_adhoc_tasks() {
     public static function call_internal_method($object, $methodname, array $params, $classname) {
         $reflection = new \ReflectionClass($classname);
         $method = $reflection->getMethod($methodname);
-        $method->setAccessible(true);
         return $method->invokeArgs($object, $params);
     }
 
diff --git a/lib/phpunit/tests/phpunit_dataset_test.php b/lib/phpunit/tests/phpunit_dataset_test.php
index 4e0aa982f743..262ef52befb2 100644
--- a/lib/phpunit/tests/phpunit_dataset_test.php
+++ b/lib/phpunit/tests/phpunit_dataset_test.php
@@ -54,11 +54,8 @@ public function test_from_files() {
         // We need public properties to check the basis.
         $dsref = new \ReflectionClass($ds);
         $dstables = $dsref->getProperty('tables');
-        $dstables->setAccessible(true);
         $dscolumns = $dsref->getProperty('columns');
-        $dscolumns->setAccessible(true);
         $dsrows = $dsref->getProperty('rows');
-        $dsrows->setAccessible(true);
 
         // Expectations.
         $exptables = ['user', 'user2'];
@@ -158,11 +155,8 @@ public function test_from_file(string $fullpath, string $tablename, ?string $exc
         // We need public properties to check the basis.
         $dsref = new \ReflectionClass($ds);
         $dstables = $dsref->getProperty('tables');
-        $dstables->setAccessible(true);
         $dscolumns = $dsref->getProperty('columns');
-        $dscolumns->setAccessible(true);
         $dsrows = $dsref->getProperty('rows');
-        $dsrows->setAccessible(true);
 
         // We are expecting an exception.
         if (!empty($exception)) {
@@ -251,11 +245,8 @@ public function test_from_string(string $content, string $type, string $tablenam
         // We need public properties to check the basis.
         $dsref = new \ReflectionClass($ds);
         $dstables = $dsref->getProperty('tables');
-        $dstables->setAccessible(true);
         $dscolumns = $dsref->getProperty('columns');
-        $dscolumns->setAccessible(true);
         $dsrows = $dsref->getProperty('rows');
-        $dsrows->setAccessible(true);
 
         // We are expecting an exception.
         if (!empty($exception)) {
@@ -397,11 +388,8 @@ public function test_from_array(array $structure, ?string $exception,
         // We need public properties to check the basis.
         $dsref = new \ReflectionClass($ds);
         $dstables = $dsref->getProperty('tables');
-        $dstables->setAccessible(true);
         $dscolumns = $dsref->getProperty('columns');
-        $dscolumns->setAccessible(true);
         $dsrows = $dsref->getProperty('rows');
-        $dsrows->setAccessible(true);
 
         // We are expecting an exception.
         if (!empty($exception)) {
@@ -491,11 +479,8 @@ public function test_load_csv(array $files, ?string $exception,
         // We need public properties to check the basis.
         $dsref = new \ReflectionClass($ds);
         $dstables = $dsref->getProperty('tables');
-        $dstables->setAccessible(true);
         $dscolumns = $dsref->getProperty('columns');
-        $dscolumns->setAccessible(true);
         $dsrows = $dsref->getProperty('rows');
-        $dsrows->setAccessible(true);
 
         // We are expecting an exception.
         if (!empty($exception)) {
@@ -662,11 +647,8 @@ public function test_load_xml(array $files, ?string $exception,
         // We need public properties to check the basis.
         $dsref = new \ReflectionClass($ds);
         $dstables = $dsref->getProperty('tables');
-        $dstables->setAccessible(true);
         $dscolumns = $dsref->getProperty('columns');
-        $dscolumns->setAccessible(true);
         $dsrows = $dsref->getProperty('rows');
-        $dsrows->setAccessible(true);
 
         // We are expecting an exception.
         if (!empty($exception)) {
diff --git a/lib/questionlib.php b/lib/questionlib.php
index b867ea2dc4c9..f1bb8c79c505 100644
--- a/lib/questionlib.php
+++ b/lib/questionlib.php
@@ -2092,262 +2092,3 @@ function is_latest(string $version, string $questionbankentryid): bool {
     }
     return false;
 }
-
-// Deprecated functions from Moodle 4.0.
-
-/**
- * Generate the URL for starting a new preview of a given question with the given options.
- * @param integer $questionid the question to preview.
- * @param string $preferredbehaviour the behaviour to use for the preview.
- * @param float $maxmark the maximum to mark the question out of.
- * @param question_display_options $displayoptions the display options to use.
- * @param int $variant the variant of the question to preview. If null, one will
- *      be picked randomly.
- * @param object $context context to run the preview in (affects things like
- *      filter settings, theme, lang, etc.) Defaults to $PAGE->context.
- * @return moodle_url the URL.
- * @deprecated since Moodle 4.0
- * @see qbank_previewquestion\helper::question_preview_url()
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function question_preview_url($questionid, $preferredbehaviour = null,
-                              $maxmark = null, $displayoptions = null, $variant = null, $context = null) {
-    debugging('Function question_preview_url() has been deprecated and moved to qbank_previewquestion plugin,
-    Please use qbank_previewquestion\previewquestion_helper::question_preview_url() instead.', DEBUG_DEVELOPER);
-
-    return \qbank_previewquestion\helper::question_preview_url($questionid, $preferredbehaviour,
-        $maxmark, $displayoptions, $variant, $context);
-}
-
-/**
- * Popup params for the question preview.
- *
- * @return array that can be passed as $params to the {@see popup_action()} constructor.
- * @deprecated since Moodle 4.0
- * @see qbank_previewquestion\previewquestion_helper::question_preview_popup_params()
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function question_preview_popup_params() {
-    debugging('Function question_preview_popup_params() has been deprecated and moved to qbank_previewquestion plugin,
-    Please use qbank_previewquestion\previewquestion_helper::question_preview_popup_params() instead.', DEBUG_DEVELOPER);
-
-    return \qbank_previewquestion\helper::question_preview_popup_params();
-}
-
-/**
- * Creates a stamp that uniquely identifies this version of the question
- *
- * In future we want this to use a hash of the question data to guarantee that
- * identical versions have the same version stamp.
- *
- * @param object $question
- * @return string A unique version stamp
- * @deprecated since Moodle 4.0
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function question_hash($question) {
-    debugging('Function question_hash() has been deprecated without replacement.', DEBUG_DEVELOPER);
-    return make_unique_id_code();
-}
-
-/**
- * Create url for question export.
- *
- * @param int $contextid
- * @param int $categoryid
- * @param string $format
- * @param string $withcategories
- * @param string $withcontexts
- * @param string $filename
- * @return moodle_url export file url
- * @deprecated since Moodle 4.0 MDL-71573
- * @see qbank_exportquestions\exportquestions_helper
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function question_make_export_url($contextid, $categoryid, $format, $withcategories,
-                                  $withcontexts, $filename) {
-    debugging('Function question_make_export_url() has been deprecated and moved to qbank_exportquestions plugin,
-    Please use qbank_exportquestions\exportquestions_helper::question_make_export_url() instead.', DEBUG_DEVELOPER);
-
-    return \qbank_exportquestions\exportquestions_helper::question_make_export_url($contextid, $categoryid, $format,
-        $withcategories, $withcontexts, $filename);
-}
-
-/**
- * Get the URL to export a single question (exportone.php).
- *
- * @param stdClass|question_definition $question the question definition as obtained from
- *      question_bank::load_question_data() or question_bank::make_question().
- *      (Only ->id and ->contextid are used.)
- * @return moodle_url the requested URL.
- * @deprecated since Moodle 4.0
- * @see \qbank_exporttoxml\helper::question_get_export_single_question_url()
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function question_get_export_single_question_url($question) {
-    debugging('Function question_get_export_single_question_url() has been deprecated and moved to qbank_exporttoxml plugin,
-     please use qbank_exporttoxml\helper::question_get_export_single_question_url() instead.', DEBUG_DEVELOPER);
-    qbank_exporttoxml\helper::question_get_export_single_question_url($question);
-}
-
-/**
- * Remove stale questions from a category.
- *
- * While questions should not be left behind when they are not used any more,
- * it does happen, maybe via restore, or old logic, or uncovered scenarios. When
- * this happens, the users are unable to delete the question category unless
- * they move those stale questions to another one category, but to them the
- * category is empty as it does not contain anything. The purpose of this function
- * is to detect the questions that may have gone stale and remove them.
- *
- * You will typically use this prior to checking if the category contains questions.
- *
- * The stale questions (unused and hidden to the user) handled are:
- * - hidden questions
- * - random questions
- *
- * @param int $categoryid The category ID.
- * @deprecated since Moodle 4.0 MDL-71585
- * @see qbank_managecategories\helper
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function question_remove_stale_questions_from_category($categoryid) {
-    debugging('Function question_remove_stale_questions_from_category()
-    has been deprecated and moved to qbank_managecategories plugin,
-    Please use qbank_managecategories\helper::question_remove_stale_questions_from_category() instead.',
-        DEBUG_DEVELOPER);
-    \qbank_managecategories\helper::question_remove_stale_questions_from_category($categoryid);
-}
-
-/**
- * Private method, only for the use of add_indented_names().
- *
- * Recursively adds an indentedname field to each category, starting with the category
- * with id $id, and dealing with that category and all its children, and
- * return a new array, with those categories in the right order.
- *
- * @param array $categories an array of categories which has had childids
- *          fields added by flatten_category_tree(). Passed by reference for
- *          performance only. It is not modfied.
- * @param int $id the category to start the indenting process from.
- * @param int $depth the indent depth. Used in recursive calls.
- * @param int $nochildrenof
- * @return array a new array of categories, in the right order for the tree.
- * @deprecated since Moodle 4.0 MDL-71585
- * @see qbank_managecategories\helper
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function flatten_category_tree(&$categories, $id, $depth = 0, $nochildrenof = -1) {
-    debugging('Function flatten_category_tree() has been deprecated and moved to qbank_managecategories plugin,
-    Please use qbank_managecategories\helper::flatten_category_tree() instead.', DEBUG_DEVELOPER);
-    return \qbank_managecategories\helper::flatten_category_tree($categories, $id, $depth, $nochildrenof);
-}
-
-/**
- * Format categories into an indented list reflecting the tree structure.
- *
- * @param array $categories An array of category objects, for example from the.
- * @param int $nochildrenof
- * @return array The formatted list of categories.
- * @deprecated since Moodle 4.0 MDL-71585
- * @see qbank_managecategories\helper
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function add_indented_names($categories, $nochildrenof = -1) {
-    debugging('Function add_indented_names() has been deprecated and moved to qbank_managecategories plugin,
-    Please use qbank_managecategories\helper::add_indented_names() instead.', DEBUG_DEVELOPER);
-    return \qbank_managecategories\helper::add_indented_names($categories, $nochildrenof);
-}
-
-/**
- * Output a select menu of question categories.
- * Categories from this course and (optionally) published categories from other courses
- * are included. Optionally, only categories the current user may edit can be included.
- *
- * @param array $contexts
- * @param bool $top
- * @param int $currentcat
- * @param integer $selected optionally, the id of a category to be selected by
- *      default in the dropdown.
- * @param int $nochildrenof
- * @deprecated since Moodle 4.0 MDL-71585
- * @see qbank_managecategories\helper
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function question_category_select_menu($contexts, $top = false, $currentcat = 0,
-                                       $selected = "", $nochildrenof = -1) {
-    debugging('Function question_category_select_menu() has been deprecated and moved to qbank_managecategories plugin,
-    Please use qbank_managecategories\helper::question_category_select_menu() instead.', DEBUG_DEVELOPER);
-    \qbank_managecategories\helper::question_category_select_menu($contexts, $top, $currentcat, $selected, $nochildrenof);
-}
-
-/**
- * Get all the category objects, including a count of the number of questions in that category,
- * for all the categories in the lists $contexts.
- *
- * @param mixed $contexts either a single contextid, or a comma-separated list of context ids.
- * @param string $sortorder used as the ORDER BY clause in the select statement.
- * @param bool $top Whether to return the top categories or not.
- * @return array of category objects.
- * @deprecated since Moodle 4.0 MDL-71585
- * @see qbank_managecategories\helper
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function get_categories_for_contexts($contexts, $sortorder = 'parent, sortorder, name ASC', $top = false) {
-    debugging('Function get_categories_for_contexts() has been deprecated and moved to qbank_managecategories plugin,
-    Please use qbank_managecategories\helper::get_categories_for_contexts() instead.', DEBUG_DEVELOPER);
-    return \qbank_managecategories\helper::get_categories_for_contexts($contexts, $sortorder, $top);
-}
-
-/**
- * Output an array of question categories.
- *
- * @param array $contexts The list of contexts.
- * @param bool $top Whether to return the top categories or not.
- * @param int $currentcat
- * @param bool $popupform
- * @param int $nochildrenof
- * @param boolean $escapecontextnames Whether the returned name of the thing is to be HTML escaped or not.
- * @return array
- * @deprecated since Moodle 4.0 MDL-71585
- * @see qbank_managecategories\helper
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function question_category_options($contexts, $top = false, $currentcat = 0,
-                                   $popupform = false, $nochildrenof = -1, $escapecontextnames = true) {
-    debugging('Function question_category_options() has been deprecated and moved to qbank_managecategories plugin,
-    Please use qbank_managecategories\helper::question_category_options() instead.', DEBUG_DEVELOPER);
-    return \qbank_managecategories\helper::question_category_options($contexts, $top, $currentcat,
-        $popupform, $nochildrenof, $escapecontextnames);
-}
-
-/**
- * Add context in categories key.
- *
- * @param array $categories The list of categories.
- * @return array
- * @deprecated since Moodle 4.0 MDL-71585
- * @see qbank_managecategories\helper
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function question_add_context_in_key($categories) {
-    debugging('Function question_add_context_in_key() has been deprecated and moved to qbank_managecategories plugin,
-    Please use qbank_managecategories\helper::question_add_context_in_key() instead.', DEBUG_DEVELOPER);
-    return \qbank_managecategories\helper::question_add_context_in_key($categories);
-}
-
-/**
- * Finds top categories in the given categories hierarchy and replace their name with a proper localised string.
- *
- * @param array $categories An array of question categories.
- * @param boolean $escape Whether the returned name of the thing is to be HTML escaped or not.
- * @return array The same question category list given to the function, with the top category names being translated.
- * @deprecated since Moodle 4.0 MDL-71585
- * @see qbank_managecategories\helper
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function question_fix_top_names($categories, $escape = true) {
-    debugging('Function question_fix_top_names() has been deprecated and moved to qbank_managecategories plugin,
-    Please use qbank_managecategories\helper::question_fix_top_names() instead.', DEBUG_DEVELOPER);
-    return \qbank_managecategories\helper::question_fix_top_names($categories, $escape);
-}
diff --git a/lib/setuplib.php b/lib/setuplib.php
index af340a89e0c9..b56ba5f97a59 100644
--- a/lib/setuplib.php
+++ b/lib/setuplib.php
@@ -958,7 +958,13 @@ function initialise_fullme() {
                 throw new moodle_exception('requirecorrectaccess', 'error', '', null,
                     'You called ' . $calledurl .', you should have called ' . $correcturl);
             }
-            redirect($CFG->wwwroot . $rurl['fullpath'], get_string('wwwrootmismatch', 'error', $CFG->wwwroot), 3);
+            $rfullpath = $rurl['fullpath'];
+            // Check that URL is under $CFG->wwwroot.
+            if (strpos($rfullpath, $wwwroot['path']) === 0) {
+                $rfullpath = substr($rurl['fullpath'], strlen($wwwroot['path']) - 1);
+                $rfullpath = (new moodle_url($rfullpath))->out(false);
+            }
+            redirect($rfullpath, get_string('wwwrootmismatch', 'error', $CFG->wwwroot), 3);
         }
     }
 
@@ -1492,7 +1498,7 @@ function disable_output_buffering() {
  */
 function is_major_upgrade_required() {
     global $CFG;
-    $lastmajordbchanges = 2022101400.03; // This should be the version where the breaking changes happen.
+    $lastmajordbchanges = 2024010400.00; // This should be the version where the breaking changes happen.
 
     $required = empty($CFG->version);
     $required = $required || (float)$CFG->version < $lastmajordbchanges;
diff --git a/calendar/templates/threemonth_month.mustache b/lib/templates/form_input_toggle_sensitive.mustache
similarity index 55%
rename from calendar/templates/threemonth_month.mustache
rename to lib/templates/form_input_toggle_sensitive.mustache
index bac1b5b68ee8..ba47b469c0c8 100644
--- a/calendar/templates/threemonth_month.mustache
+++ b/lib/templates/form_input_toggle_sensitive.mustache
@@ -15,14 +15,9 @@
     along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 }}
 {{!
-    @template core_calendar/threemonth_month
+    @template core/form_input_toggle_sensitive
 
-    @deprecated since 4.0 MDL-72810.
-    @todo MDL-73117 This will be deleted in Moodle 4.4.
-
-    Calendar view to show three months as a block.
-
-    The purpose of this template is to render a set of three months of calendar_mini in a block.
+    Moodle template for toggling senstive inputs.
 
     Classes required for JS:
     * none
@@ -30,13 +25,21 @@
     Data attributes required for JS:
     * none
 
+    Context variables required for this template:
+    * none
+
     Example context (json):
     {
+        "smallscreensonly": true,
+        "sensitiveinput": "<input type=\"password\" name=\"password\" id=\"password\">"
     }
 }}
-<div data-period="month" class="calendarwrapper"{{!
-    }} data-previous-year="{{previousperiod.year}}" data-previous-month="{{previousperiod.mon}}" {{!
-    }} data-next-year="{{nextperiod.year}}" data-next-month="{{nextperiod.mon}}" {{!
-    }}>
-    {{> core_calendar/calendar_mini}}
+<div class="toggle-sensitive-wrapper {{#smallscreensonly}}small-screens-only{{/smallscreensonly}} input-group mb-3">
+    {{{sensitiveinput}}}
+    <div class="input-group-append">
+        <button class="toggle-sensitive-btn btn btn-secondary" type="button" {{!
+            !}}aria-label="{{#str}}togglesensitive, form{{/str}}">
+            {{#pix}}t/hide, core{{/pix}}
+        </button>
+    </div>
 </div>
diff --git a/lib/templates/loginform.mustache b/lib/templates/loginform.mustache
index 05060f3ff6e9..9e5fd7aa72fd 100644
--- a/lib/templates/loginform.mustache
+++ b/lib/templates/loginform.mustache
@@ -91,7 +91,9 @@
         "sitename": "Beer & Chips",
         "logintoken": "randomstring",
         "maintenance": "For full access to this site, you need to login in as an admin.",
-        "languagemenu": "Choose language"
+        "languagemenu": "Choose language",
+        "togglepassword": true,
+        "smallscreensonly": true
     }
 }}
 
@@ -214,13 +216,24 @@
 
 {{#js}}
     {{^error}}
+        {{#togglepassword}}
+            require(['core/togglesensitive'], function(ToggleSensitive) {
+                ToggleSensitive.init("password", {{smallscreensonly}});
+            });
+        {{/togglepassword}}
         {{#autofocusform}}
-            var userNameField = document.getElementById('username');
-            if (userNameField.value.length == 0) {
-                userNameField.focus();
-            } else {
-                document.getElementById('password').focus();
-            }
+            require(['core_form/events'], function(FormEvent) {
+                function autoFocus() {
+                    const userNameField = document.getElementById('username');
+                    if (userNameField.value.length == 0) {
+                        userNameField.focus();
+                    } else {
+                        document.getElementById('password').focus();
+                    }
+                }
+                autoFocus();
+                window.addEventListener(FormEvent.eventTypes.fieldStructureChanged, autoFocus);
+            });
         {{/autofocusform}}
     {{/error}}
     {{#error}}
diff --git a/lib/tests/accesslib_test.php b/lib/tests/accesslib_test.php
index ba4f0f143acc..8b72994b1cc6 100644
--- a/lib/tests/accesslib_test.php
+++ b/lib/tests/accesslib_test.php
@@ -1965,7 +1965,6 @@ protected function setup_fake_plugin($pluginname) {
         // the access.php works.
         $mockedcomponent = new ReflectionClass(core_component::class);
         $mockedplugins = $mockedcomponent->getProperty('plugins');
-        $mockedplugins->setAccessible(true);
         $plugins = $mockedplugins->getValue();
         $plugins['fake'] = [$pluginname => "{$CFG->dirroot}/lib/tests/fixtures/fakeplugins/$pluginname"];
         $mockedplugins->setValue(null, $plugins);
@@ -4877,7 +4876,6 @@ public function test_is_parent_of(string $contextpath, string $testpath, bool $t
             ->getMock();
 
         $rcp = new ReflectionProperty($context, '_path');
-        $rcp->setAccessible(true);
         $rcp->setValue($context, $contextpath);
 
         $comparisoncontext = $this->getMockBuilder(\context::class)
@@ -4889,7 +4887,6 @@ public function test_is_parent_of(string $contextpath, string $testpath, bool $t
             ->getMock();
 
         $rcp = new ReflectionProperty($comparisoncontext, '_path');
-        $rcp->setAccessible(true);
         $rcp->setValue($comparisoncontext, $testpath);
 
         $this->assertEquals($expected, $context->is_parent_of($comparisoncontext, $testself));
@@ -4986,7 +4983,6 @@ public function test_is_child_of(string $contextpath, string $testpath, bool $te
             ->getMock();
 
         $rcp = new ReflectionProperty($context, '_path');
-        $rcp->setAccessible(true);
         $rcp->setValue($context, $contextpath);
 
         $comparisoncontext = $this->getMockBuilder(\context::class)
@@ -4998,7 +4994,6 @@ public function test_is_child_of(string $contextpath, string $testpath, bool $te
             ->getMock();
 
         $rcp = new ReflectionProperty($comparisoncontext, '_path');
-        $rcp->setAccessible(true);
         $rcp->setValue($comparisoncontext, $testpath);
 
         $this->assertEquals($expected, $context->is_child_of($comparisoncontext, $testself));
diff --git a/lib/tests/analysers_test.php b/lib/tests/analysers_test.php
index 1e5c3e813a82..875646c6b16a 100644
--- a/lib/tests/analysers_test.php
+++ b/lib/tests/analysers_test.php
@@ -57,7 +57,6 @@ public function test_courses_analyser() {
         // Just 1 sample per course.
         $class = new \ReflectionClass('\core\analytics\analyser\courses');
         $method = $class->getMethod('get_all_samples');
-        $method->setAccessible(true);
         list($sampleids, $samplesdata) = $method->invoke($analyser, $analysable);
         $this->assertCount(1, $sampleids);
         $sampleid = reset($sampleids);
@@ -107,7 +106,6 @@ public function test_site_courses_analyser() {
 
         $class = new \ReflectionClass('\core\analytics\analyser\site_courses');
         $method = $class->getMethod('get_all_samples');
-        $method->setAccessible(true);
         list($sampleids, $samplesdata) = $method->invoke($analyser, $analysable);
         $this->assertCount(3, $sampleids);
 
@@ -159,7 +157,6 @@ public function test_student_enrolments_analyser() {
 
         $class = new \ReflectionClass('\core\analytics\analyser\student_enrolments');
         $method = $class->getMethod('get_all_samples');
-        $method->setAccessible(true);
         list($sampleids, $samplesdata) = $method->invoke($analyser, $analysable);
         // Only students.
         $this->assertCount(2, $sampleids);
diff --git a/lib/tests/client_test.php b/lib/tests/client_test.php
index 2f6a71838476..66cdb3b7a7bd 100644
--- a/lib/tests/client_test.php
+++ b/lib/tests/client_test.php
@@ -109,7 +109,6 @@ public function test_map_userinfo_to_fields(array $mapping, array $expected) {
         ];
 
         $method = new ReflectionMethod("core\oauth2\client", "map_userinfo_to_fields");
-        $method->setAccessible(true);
 
         $issuer = new \core\oauth2\issuer(0);
         $mockbuilder = $this->getMockBuilder('core\oauth2\client');
diff --git a/lib/tests/completionlib_test.php b/lib/tests/completionlib_test.php
index ced754c46bf1..fb0904bbb2df 100644
--- a/lib/tests/completionlib_test.php
+++ b/lib/tests/completionlib_test.php
@@ -966,7 +966,6 @@ public function test_get_other_cm_completion_data() {
         $completioninfo = new completion_info($this->course);
 
         $method = new ReflectionMethod("completion_info", "get_other_cm_completion_data");
-        $method->setAccessible(true);
 
         // Check that fetching data for a module with custom completion provides its info.
         $choicecompletiondata = $method->invoke($completioninfo, $cmchoice, $user->id);
@@ -1813,7 +1812,6 @@ public function test_save() {
 
         // We're testing a private method, so we need to setup reflector magic.
         $method = new ReflectionMethod($ccompletion, '_save');
-        $method->setAccessible(true); // Allow accessing of private method.
         $completionid = $method->invoke($ccompletion);
         $completions = $DB->get_records('course_completions');
         $this->assertEquals(count($completions), 1);
@@ -1821,7 +1819,6 @@ public function test_save() {
 
         $ccompletion->id = 0;
         $method = new ReflectionMethod($ccompletion, '_save');
-        $method->setAccessible(true); // Allow accessing of private method.
         $completionid = $method->invoke($ccompletion);
         $this->assertDebuggingCalled('Can not update data object, no id!');
         $this->assertNull($completionid);
diff --git a/lib/tests/component_test.php b/lib/tests/component_test.php
index 5df2a1c34d89..d9c714cec5ce 100644
--- a/lib/tests/component_test.php
+++ b/lib/tests/component_test.php
@@ -640,11 +640,9 @@ public static function classloader_provider(): array {
      */
     public function test_classloader($psr0, $psr4, $classname, $includedfiles): void {
         $psr0namespaces = new ReflectionProperty('core_component', 'psr0namespaces');
-        $psr0namespaces->setAccessible(true);
         $psr0namespaces->setValue(null, $psr0);
 
         $psr4namespaces = new ReflectionProperty('core_component', 'psr4namespaces');
-        $psr4namespaces->setAccessible(true);
         $psr4namespaces->setValue(null, $psr4);
 
         core_component::classloader($classname);
@@ -775,16 +773,13 @@ public static function psr_classloader_provider(): array {
      */
     public function test_psr_classloader($psr0, $psr4, $classname, $file): void {
         $psr0namespaces = new ReflectionProperty('core_component', 'psr0namespaces');
-        $psr0namespaces->setAccessible(true);
         $psr0namespaces->setValue(null, $psr0);
 
         $psr4namespaces = new ReflectionProperty('core_component', 'psr4namespaces');
-        $psr4namespaces->setAccessible(true);
         $psr4namespaces->setValue(null, $psr4);
 
         $component = new ReflectionClass('core_component');
         $psrclassloader = $component->getMethod('psr_classloader');
-        $psrclassloader->setAccessible(true);
 
         $returnvalue = $psrclassloader->invokeArgs(null, [$classname]);
         // Normalise to forward slashes for testing comparison.
@@ -845,7 +840,6 @@ public static function get_class_file_provider(): array {
     public function test_get_class_file($classname, $prefix, $path, $separators, $result): void {
         $component = new ReflectionClass('core_component');
         $psrclassloader = $component->getMethod('get_class_file');
-        $psrclassloader->setAccessible(true);
 
         $file = $psrclassloader->invokeArgs(null, [$classname, $prefix, $path, $separators]);
         $this->assertEquals($result, $file);
diff --git a/lib/tests/core_renderer_template_exploit_test.php b/lib/tests/core_renderer_template_exploit_test.php
index 771ad6be66a9..992fa1f95bc3 100644
--- a/lib/tests/core_renderer_template_exploit_test.php
+++ b/lib/tests/core_renderer_template_exploit_test.php
@@ -410,7 +410,6 @@ public function test_core_mustache_engine_strips_js_helper(
 
         // Get the mustache engine from the renderer.
         $reflection = new \ReflectionMethod($renderer, 'get_mustache');
-        $reflection->setAccessible(true);
         $engine = $reflection->invoke($renderer);
 
         // Swap the loader out with an array loader so that we can set some
diff --git a/lib/tests/deprecation_test.php b/lib/tests/deprecation_test.php
index 12a0dd52bd93..bebad9ce3fc3 100644
--- a/lib/tests/deprecation_test.php
+++ b/lib/tests/deprecation_test.php
@@ -16,14 +16,18 @@
 
 namespace core;
 
+use core\attribute\deprecated;
+use core\attribute\deprecated_with_reference;
+
 /**
- * Tests for \core\deprecated and \core\deprecation.
+ * Tests for \core\attribute\sdeprecated and \core\deprecation.
  *
  * @package    core
  * @category   test
  * @copyright  2024 Andrew Lyons <andrew@nicols.co.uk>
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @covers \core\deprecated
+ * @covers \core\attribute\deprecated
+ * @covers \core\attribute\deprecated_with_reference
  * @covers \core\deprecation
  */
 class deprecation_test extends \advanced_testcase {
@@ -40,11 +44,13 @@ public function test_emit(
         }
 
         $attribute = new deprecated(
-            'Test description',
             ...$args,
+            replacement: 'Test replacement',
         );
 
-        deprecation::emit_deprecation_notice($attribute);
+        $rc = new \ReflectionClass(deprecation::class);
+        $method = $rc->getMethod('emit_deprecation_notice');
+        $method->invoke(null, $attribute);
 
         if ($expectdebugging) {
             $this->assertdebuggingcalledcount(1);
@@ -92,19 +98,20 @@ public static function emit_provider(): array {
      * @dataProvider get_deprecation_string_provider
      */
     public function test_get_deprecation_string(
-        string $descriptor,
+        ?string $replacement,
         ?string $since,
         ?string $reason,
-        ?string $replacement,
         ?string $mdl,
         string $expected,
     ): void {
-        $attribute = new deprecated(
-            descriptor: $descriptor,
+        $attribute = new deprecated_with_reference(
+            owner: 'Test description',
+            replacement: $replacement,
             since: $since,
             reason: $reason,
-            replacement: $replacement,
             mdl: $mdl,
+            final: false,
+            emit: true,
         );
 
         $this->assertEquals(
@@ -112,63 +119,81 @@ public function test_get_deprecation_string(
             deprecation::get_deprecation_string($attribute),
         );
 
-        deprecation::emit_deprecation_notice($attribute);
+        $rc = new \ReflectionClass(deprecation::class);
+        $method = $rc->getMethod('emit_deprecation_notice');
+        $method->invoke(null, $attribute);
+
         $this->assertDebuggingCalled($expected);
     }
 
     public static function get_deprecation_string_provider(): array {
         return [
             [
-                'Test description',
-                null,
+                'Test replacement',
                 null,
                 null,
                 null,
-                'Deprecation: Test description has been deprecated.',
+                'Deprecation: Test description has been deprecated. Use Test replacement instead.',
             ],
             [
-                'Test description',
+                'Test replacement',
                 '4.1',
                 null,
                 null,
-                null,
-                'Deprecation: Test description has been deprecated since 4.1.',
+                'Deprecation: Test description has been deprecated since 4.1. Use Test replacement instead.',
             ],
             [
-                'Test description',
+                'Test replacement',
                 null,
                 'Test reason',
                 null,
-                null,
-                'Deprecation: Test description has been deprecated. Test reason.',
+                'Deprecation: Test description has been deprecated. Test reason. Use Test replacement instead.',
             ],
             [
-                'Test description',
+                'Test replacement',
                 null,
                 null,
-                'Test replacement',
                 null,
                 'Deprecation: Test description has been deprecated. Use Test replacement instead.',
             ],
             [
-                'Test description',
-                null,
+                'Test replacement',
                 null,
                 null,
                 'https://docs.moodle.org/311/en/Deprecated',
-                'Deprecation: Test description has been deprecated. See https://docs.moodle.org/311/en/Deprecated for more information.',
+                'Deprecation: Test description has been deprecated. Use Test replacement instead. See https://docs.moodle.org/311/en/Deprecated for more information.',
             ],
             [
-                'Test description',
+                'Test replacement',
                 '4.1',
                 'Test reason',
-                'Test replacement',
                 'https://docs.moodle.org/311/en/Deprecated',
                 'Deprecation: Test description has been deprecated since 4.1. Test reason. Use Test replacement instead. See https://docs.moodle.org/311/en/Deprecated for more information.',
             ],
+            [
+                null,
+                null,
+                'Test reason',
+                null,
+                'Deprecation: Test description has been deprecated. Test reason.',
+            ],
+            [
+                null,
+                null,
+                null,
+                'MDL-80677',
+                'Deprecation: Test description has been deprecated. See MDL-80677 for more information.',
+            ],
         ];
     }
 
+    public function test_deprecated_without_replacement(): void {
+        $this->expectException(\coding_exception::class);
+        new deprecated(
+            replacement: null,
+        );
+    }
+
     /**
      * @dataProvider from_provider
      */
@@ -201,41 +226,168 @@ public static function from_provider(): array {
         return [
             // Classes.
             [\core\fixtures\deprecated_class::class, true],
+            [\core\fixtures\deprecated_interface::class, true],
+            [\core\fixtures\deprecated_trait::class, true],
             [[\core\fixtures\deprecated_class::class], true],
+            [[\core\fixtures\deprecated_interface::class], true],
+            [[\core\fixtures\deprecated_trait::class], true],
+
+            [\core\fixtures\not_deprecated_class_using_deprecated_trait_features::class, false],
+            [[\core\fixtures\not_deprecated_class_using_deprecated_trait_features::class], false],
+
             [\core\fixtures\not_deprecated_class::class, false],
+            [\core\fixtures\not_deprecated_interface::class, false],
+            [\core\fixtures\not_deprecated_trait::class, false],
             [[\core\fixtures\not_deprecated_class::class], false],
+            [[\core\fixtures\not_deprecated_interface::class], false],
+            [[\core\fixtures\not_deprecated_trait::class], false],
 
-            // Class properties.
+            // Class properties in a deprecated class.
             [\core\fixtures\deprecated_class::class . '::deprecatedproperty', true],
             [[\core\fixtures\deprecated_class::class, 'deprecatedproperty'], true],
+            [\core\fixtures\not_deprecated_class_using_deprecated_trait_features::class . '::deprecatedproperty', true],
+            [[\core\fixtures\not_deprecated_class_using_deprecated_trait_features::class, 'deprecatedproperty'], true],
+            [\core\fixtures\not_deprecated_class_using_not_deprecated_trait_features::class . '::deprecatedproperty', true],
+            [[\core\fixtures\not_deprecated_class_using_not_deprecated_trait_features::class, 'deprecatedproperty'], true],
 
-            [\core\fixtures\deprecated_class::class . '::notdeprecatedproperty', false],
-            [[\core\fixtures\deprecated_class::class, 'notdeprecatedproperty'], false],
+            [\core\fixtures\deprecated_class::class . '::notdeprecatedproperty', true],
+            [[\core\fixtures\deprecated_class::class, 'notdeprecatedproperty'], true],
+            [\core\fixtures\not_deprecated_class_using_deprecated_trait_features::class . '::notdeprecatedproperty', true],
+            [[\core\fixtures\not_deprecated_class_using_deprecated_trait_features::class, 'notdeprecatedproperty'], true],
+            [\core\fixtures\not_deprecated_class_using_not_deprecated_trait_features::class . '::notdeprecatedproperty', false],
+            [[\core\fixtures\not_deprecated_class_using_not_deprecated_trait_features::class, 'notdeprecatedproperty'], false],
 
-            // Class constants.
+            // Class constants in a deprecated class.
             [\core\fixtures\deprecated_class::class . '::DEPRECATED_CONST', true],
             [[\core\fixtures\deprecated_class::class, 'DEPRECATED_CONST'], true],
 
-            [\core\fixtures\deprecated_class::class . '::NOT_DEPRECATED_CONST', false],
-            [[\core\fixtures\deprecated_class::class, 'NOT_DEPRECATED_CONST'], false],
+            [\core\fixtures\deprecated_class::class . '::NOT_DEPRECATED_CONST', true],
+            [[\core\fixtures\deprecated_class::class, 'NOT_DEPRECATED_CONST'], true],
 
-            // Class methods.
+            // Class methods in a deprecated class.
             [\core\fixtures\deprecated_class::class . '::deprecated_method', true],
             [[\core\fixtures\deprecated_class::class, 'deprecated_method'], true],
 
-            [\core\fixtures\deprecated_class::class . '::not_deprecated_method', false],
-            [[\core\fixtures\deprecated_class::class, 'not_deprecated_method'], false],
+            [\core\fixtures\not_deprecated_class_using_deprecated_trait_features::class . '::deprecated_method', true],
+            [[\core\fixtures\not_deprecated_class_using_deprecated_trait_features::class, 'deprecated_method'], true],
+            [\core\fixtures\not_deprecated_class_using_not_deprecated_trait_features::class . '::deprecated_method', true],
+            [[\core\fixtures\not_deprecated_class_using_not_deprecated_trait_features::class, 'deprecated_method'], true],
+
+            [\core\fixtures\deprecated_class::class . '::not_deprecated_method', true],
+            [[\core\fixtures\deprecated_class::class, 'not_deprecated_method'], true],
+
+            [\core\fixtures\not_deprecated_class_using_deprecated_trait_features::class . '::not_deprecated_method', true],
+            [[\core\fixtures\not_deprecated_class_using_deprecated_trait_features::class, 'not_deprecated_method'], true],
+            [\core\fixtures\not_deprecated_class_implementing_deprecated_interface::class . '::not_deprecated_method', true],
+            [[\core\fixtures\not_deprecated_class_implementing_deprecated_interface::class, 'not_deprecated_method'], true],
+
+            // Class properties in a not-deprecated class.
+            [\core\fixtures\not_deprecated_class::class . '::deprecatedproperty', true],
+            [[\core\fixtures\not_deprecated_class::class, 'deprecatedproperty'], true],
+
+            [\core\fixtures\not_deprecated_class::class . '::notdeprecatedproperty', false],
+            [[\core\fixtures\not_deprecated_class::class, 'notdeprecatedproperty'], false],
+
+            // Class constants in a not-deprecated class.
+            [\core\fixtures\not_deprecated_class::class . '::DEPRECATED_CONST', true],
+            [[\core\fixtures\not_deprecated_class::class, 'DEPRECATED_CONST'], true],
+
+            [\core\fixtures\not_deprecated_class::class . '::NOT_DEPRECATED_CONST', false],
+            [[\core\fixtures\not_deprecated_class::class, 'NOT_DEPRECATED_CONST'], false],
+
+            [\core\fixtures\not_deprecated_interface::class . '::DEPRECATED_CONST', true],
+            [[\core\fixtures\not_deprecated_interface::class, 'DEPRECATED_CONST'], true],
+
+            [\core\fixtures\not_deprecated_interface::class . '::NOT_DEPRECATED_CONST', false],
+            [[\core\fixtures\not_deprecated_interface::class, 'NOT_DEPRECATED_CONST'], false],
+
+            // Class methods in a not-deprecated class.
+            [\core\fixtures\not_deprecated_class::class . '::deprecated_method', true],
+            [[\core\fixtures\not_deprecated_class::class, 'deprecated_method'], true],
+
+            [\core\fixtures\not_deprecated_class::class . '::not_deprecated_method', false],
+            [[\core\fixtures\not_deprecated_class::class, 'not_deprecated_method'], false],
 
             // Non-existent class.
             ['non_existent_class', false],
             [['non_existent_class'], false],
 
+            // Non-existent feature in an existent class.
+            [[\core\fixtures\not_deprecated_class::class, 'no_such_method'], false],
+
             // Not-deprecated class.
             [\core\fixtures\not_deprecated_class::class, false],
 
             // Deprecated global function.
             ['core\fixtures\deprecated_function', true],
             ['core\fixtures\not_deprecated_function', false],
+
+            // Empty array.
+            [[], false],
+        ];
+    }
+
+    /**
+     * @dataProvider deprecated_ownership_provider
+     */
+    public function test_deprecated_class(
+        array $reference,
+        string $expectedowner,
+    ): void {
+        require_once(dirname(__FILE__) . '/fixtures/deprecated_fixtures.php');
+
+        // All attributes for any part of a deprecated class should belong to the deprecated class.
+        $this->assertEquals(
+            $expectedowner,
+            deprecation::from($reference)->owner,
+        );
+    }
+
+    public static function deprecated_ownership_provider(): array {
+        return [
+            // Any part of a deprecated class will emit the deprecation for the class as a whole.
+            [
+                [\core\fixtures\deprecated_class::class],
+                \core\fixtures\deprecated_class::class,
+            ],
+            [
+                [\core\fixtures\deprecated_class::class, 'deprecatedproperty'],
+                \core\fixtures\deprecated_class::class,
+            ],
+            [
+                [\core\fixtures\deprecated_class::class, 'notdeprecatedproperty'],
+                \core\fixtures\deprecated_class::class,
+            ],
+            [
+                [\core\fixtures\deprecated_class::class, 'deprecated_method'],
+                \core\fixtures\deprecated_class::class,
+            ],
+            [
+                [\core\fixtures\deprecated_class::class, 'not_deprecated_method'],
+                \core\fixtures\deprecated_class::class,
+            ],
+            [
+                [\core\fixtures\deprecated_class::class, 'DEPRECATED_CONST'],
+                \core\fixtures\deprecated_class::class,
+            ],
+            [
+                [\core\fixtures\deprecated_class::class, 'NOT_DEPRECATED_CONST'],
+                \core\fixtures\deprecated_class::class,
+            ],
+
+            // A non-deprecated class will emit just for that feature.
+            [
+                [\core\fixtures\not_deprecated_class::class, 'deprecatedproperty'],
+                \core\fixtures\not_deprecated_class::class . '::deprecatedproperty',
+            ],
+            [
+                [\core\fixtures\not_deprecated_class::class, 'deprecated_method'],
+                \core\fixtures\not_deprecated_class::class . '::deprecated_method',
+            ],
+            [
+                [\core\fixtures\not_deprecated_class::class, 'DEPRECATED_CONST'],
+                \core\fixtures\not_deprecated_class::class . '::DEPRECATED_CONST',
+            ],
         ];
     }
 }
diff --git a/lib/tests/external/check/get_result_admintree_test.php b/lib/tests/external/check/get_result_admintree_test.php
index 5814e6c4a24b..702e40acd401 100644
--- a/lib/tests/external/check/get_result_admintree_test.php
+++ b/lib/tests/external/check/get_result_admintree_test.php
@@ -227,7 +227,6 @@ public function test_find_check_from_setting_tree(array $settings, string $searc
         $root = $this->setup_admin_tree($settings);
 
         $method = new ReflectionMethod(get_result_admintree::class, 'get_check_from_setting');
-        $method->setAccessible(true);
 
         $result = $method->invoke(new get_result_admintree(), $searchid, $searchname, $root);
 
diff --git a/lib/tests/filelib_test.php b/lib/tests/filelib_test.php
index 1e3760a4bf21..6ed87509a20f 100644
--- a/lib/tests/filelib_test.php
+++ b/lib/tests/filelib_test.php
@@ -2061,7 +2061,6 @@ class testable_curl extends curl {
     public function get_options() {
         // Access to private property.
         $rp = new \ReflectionProperty('curl', 'options');
-        $rp->setAccessible(true);
         return $rp->getValue($this);
     }
 
@@ -2073,7 +2072,6 @@ public function get_options() {
     public function set_options($options) {
         // Access to private property.
         $rp = new \ReflectionProperty('curl', 'options');
-        $rp->setAccessible(true);
         $rp->setValue($this, $options);
     }
 
@@ -2107,7 +2105,6 @@ public function unset_option($option) {
     public function call_apply_opt($options = null) {
         // Access to private method.
         $rm = new \ReflectionMethod('curl', 'apply_opt');
-        $rm->setAccessible(true);
         $ch = curl_init();
         return $rm->invoke($this, $ch, $options);
     }
diff --git a/lib/tests/filestorage_zip_archive_test.php b/lib/tests/filestorage_zip_archive_test.php
index 06eb9db2fed3..7ed424995031 100644
--- a/lib/tests/filestorage_zip_archive_test.php
+++ b/lib/tests/filestorage_zip_archive_test.php
@@ -44,7 +44,6 @@ public function test_mangle_pathname($string, $expected) {
         $ziparchive = new zip_archive();
 
         $method = new \ReflectionMethod('zip_archive', 'mangle_pathname');
-        $method->setAccessible(true);
 
         $result = $method->invoke($ziparchive, $string);
         $this->assertSame($expected, $result);
diff --git a/lib/tests/fixtures/deprecated_fixtures.php b/lib/tests/fixtures/deprecated_fixtures.php
index a5f8990f4745..3956671127d2 100644
--- a/lib/tests/fixtures/deprecated_fixtures.php
+++ b/lib/tests/fixtures/deprecated_fixtures.php
@@ -16,7 +16,7 @@
 
 namespace core\fixtures;
 
-use core\deprecated;
+use core\attribute\deprecated;
 
 /**
  * A file containing a variety of fixturs for deprecated attribute tests.
@@ -26,27 +26,111 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-#[deprecated('Deprecated class')]
+#[deprecated('not_deprecated_class')]
 class deprecated_class {
     protected string $notdeprecatedproperty = 'Not deprecated property';
 
-    #[deprecated('Deprecated property')]
+    #[deprecated('$this->notdeprecatedproperty')]
     protected string $deprecatedproperty = 'Deprecated property';
 
     const NOT_DEPRECATED_CONST = 'Not deprecated const';
 
-    #[deprecated('Deprecated const')]
+    #[deprecated('not_deprecated_class::NEW_CONSTANT')]
     const DEPRECATED_CONST = 'Deprecated const';
 
-    public function not_deprecated_method() {}
+    public function not_deprecated_method() {
+    }
 
-    #[deprecated('Deprecated method')]
-    public function deprecated_method() {}
+    #[deprecated(replacement: null, mdl: 'MDL-80677')]
+    public function deprecated_method() {
+    }
 }
 
-class not_deprecated_class {}
+class not_deprecated_class {
+    protected string $notdeprecatedproperty = 'Not deprecated property';
+
+    #[deprecated('$this->notdeprecatedproperty')]
+    protected string $deprecatedproperty = 'Deprecated property';
+
+    const NOT_DEPRECATED_CONST = 'Not deprecated const';
+
+    #[deprecated('self::NOT_DEPRECATED_CONST')]
+    const DEPRECATED_CONST = 'Deprecated const';
+
+    public function not_deprecated_method() {
+    }
+
+    #[deprecated('$this->not_deprecated_method()')]
+    public function deprecated_method() {
+    }
+}
+
+function not_deprecated_function() {
+}
+
+#[deprecated('not_deprecated_class::not_deprecated_method()')]
+function deprecated_function() {
+}
+
+interface not_deprecated_interface {
+    const NOT_DEPRECATED_CONST = 'Not deprecated const';
+
+    #[deprecated('self::NOT_DEPRECATED_CONST')]
+    const DEPRECATED_CONST = 'Deprecated const';
+
+    // Note: It does not make sense to deprecate methods in an _interface_ as the interface itself should be deprecated.
+}
+
+#[deprecated('not_deprecated_interface')]
+interface deprecated_interface {
+    const DEPRECATED_CONST = 'Deprecated const';
 
-function not_deprecated_function() {}
+    public function not_deprecated_method();
+}
+
+trait not_deprecated_trait {
+    protected string $notdeprecatedproperty = 'Not deprecated property';
+
+    #[deprecated('$this->notdeprecatedproperty')]
+    protected string $deprecatedproperty = 'Deprecated property';
+
+    public function not_deprecated_method() {
+    }
+
+    #[deprecated('$this->not_deprecated_method()')]
+    public function deprecated_method() {
+    }
+}
+
+#[deprecated(not_deprecated_trait::class)]
+trait deprecated_trait {
+    protected string $notdeprecatedproperty = 'Not deprecated property';
+
+    #[deprecated('$this->notdeprecatedproperty')]
+    protected string $deprecatedproperty = 'Deprecated property';
+
+    public function not_deprecated_method() {
+    }
+
+    #[deprecated(replacement: null, mdl: 'MDL-80677')]
+    public function deprecated_method() {
+    }
+}
+
+class not_deprecated_class_using_deprecated_trait_features {
+    use deprecated_trait;
+}
 
-#[deprecated('Deprecated function')]
-function deprecated_function() {}
+class not_deprecated_class_implementing_deprecated_interface implements deprecated_interface {
+    public function not_deprecated_method() {
+    }
+}
+
+class not_deprecated_class_using_not_deprecated_trait_features {
+    use not_deprecated_trait;
+}
+
+class not_deprecated_class_implementing_not_deprecated_interface implements not_deprecated_interface {
+    public function not_deprecated_method() {
+    }
+}
diff --git a/lib/tests/http_client_test.php b/lib/tests/http_client_test.php
index 8d405ff9a46f..b5cb24b97c54 100644
--- a/lib/tests/http_client_test.php
+++ b/lib/tests/http_client_test.php
@@ -57,12 +57,10 @@ public static function read_object_attribute(object $object, string $attributena
                     return $object->$attributename;
                 }
 
-                $attribute->setAccessible(true);
 
                 try {
                     return $attribute->getValue($object);
                 } finally {
-                    $attribute->setAccessible(false);
                 }
             } catch (\ReflectionException $e) {
                 // Do nothing.
diff --git a/lib/tests/medialib_test.php b/lib/tests/medialib_test.php
index e95bda6f6795..c5eddec9fe72 100644
--- a/lib/tests/medialib_test.php
+++ b/lib/tests/medialib_test.php
@@ -475,7 +475,6 @@ public function test_initialise() {
      */
     public function get_players_test($manager) {
         $method = new \ReflectionMethod("core_media_manager", "get_players");
-        $method->setAccessible(true);
         $players = $method->invoke($manager);
         $out = '';
         foreach ($players as $player) {
diff --git a/lib/tests/moodle_url_test.php b/lib/tests/moodle_url_test.php
index 786736a4ed36..4c36c81a3115 100644
--- a/lib/tests/moodle_url_test.php
+++ b/lib/tests/moodle_url_test.php
@@ -16,6 +16,8 @@
 
 namespace core;
 
+use GuzzleHttp\Psr7\Uri;
+
 /**
  * Tests for moodle_url.
  *
@@ -414,4 +416,33 @@ public function make_pluginfile_url_provider() {
             ],
         ];
     }
+
+    public function test_from_uri(): void {
+        global $CFG;
+
+        $uri = new Uri('http://www.example.org:447/my/file/is/here.txt?really=1');
+        $url = \moodle_url::from_uri($uri);
+        $this->assertSame('http://www.example.org:447/my/file/is/here.txt?really=1', $url->out(false));
+        $this->assertEquals(1, $url->param('really'));
+
+        $uri = new Uri('https://www.example.org/my/file/is/here.txt?really=1');
+        $url = \moodle_url::from_uri($uri);
+        $this->assertSame('https://www.example.org/my/file/is/here.txt?really=1', $url->out(false));
+        $this->assertEquals(1, $url->param('really'));
+
+        // Multiple params.
+        $uri = new Uri('https://www.example.org/my/file/is/here.txt?really=1&another=2&&more=3&moar=4');
+        $url = \moodle_url::from_uri($uri);
+        $this->assertSame('https://www.example.org/my/file/is/here.txt?really=1&another=2&more=3&moar=4', $url->out(false));
+        $this->assertEquals(1, $url->param('really'));
+        $this->assertEquals(2, $url->param('another'));
+        $this->assertEquals(3, $url->param('more'));
+        $this->assertEquals(4, $url->param('moar'));
+
+        // Anchors.
+        $uri = new Uri("{$CFG->wwwroot}/course/view/#section-1");
+        $url = \moodle_url::from_uri($uri);
+        $this->assertSame("{$CFG->wwwroot}/course/view/#section-1", $url->out(false));
+        $this->assertEmpty($url->params());
+    }
 }
diff --git a/lib/tests/moodlenet/activity_packager_test.php b/lib/tests/moodlenet/activity_packager_test.php
index c14ecfd9f940..e290c6c8e6b7 100644
--- a/lib/tests/moodlenet/activity_packager_test.php
+++ b/lib/tests/moodlenet/activity_packager_test.php
@@ -54,10 +54,8 @@ public function test_override_task_setting(): void {
         // Fetch all backup task settings.
         $rc = new \ReflectionClass(activity_packager::class);
         $rcmgetbackup = $rc->getMethod('get_backup_controller');
-        $rcmgetbackup->setAccessible(true);
         $controller = $rcmgetbackup->invoke($packager);
         $rcmgetall = $rc->getMethod('get_all_task_settings');
-        $rcmgetall->setAccessible(true);
         $tasksettings = $rcmgetall->invoke($packager, $controller);
 
         // Fetch the default settings and grab an example value (setting_root_users).
@@ -80,7 +78,6 @@ public function test_override_task_setting(): void {
         // Override the setting_root_users value, then re-fetch the settings to check the change is reflected.
         $overridevalue = ($oldvalue == 1) ? 0 : 1;
         $rcmoverridesetting = $rc->getMethod('override_task_setting');
-        $rcmoverridesetting->setAccessible(true);
         $rcmoverridesetting->invoke($packager, $tasksettings, $testsettingname, $overridevalue);
         $tasksettings = $rcmgetall->invoke($packager, $controller);
         $rootsettings = $tasksettings[\backup_root_task::class];
diff --git a/lib/tests/moodlenet/activity_sender_test.php b/lib/tests/moodlenet/activity_sender_test.php
index 3c106b9f569b..352d847f2430 100644
--- a/lib/tests/moodlenet/activity_sender_test.php
+++ b/lib/tests/moodlenet/activity_sender_test.php
@@ -95,7 +95,6 @@ public function test_prepare_share_contents(): void {
 
         // Set get_file method accessibility.
         $method = new ReflectionMethod(activity_sender::class, 'prepare_share_contents');
-        $method->setAccessible(true);
 
         // Test with invalid share format.
         $this->expectException(\moodle_exception::class);
@@ -157,7 +156,6 @@ public function test_get_resource_description(): void {
 
         // Set get_resource_description method accessibility.
         $method = new ReflectionMethod(activity_sender::class, 'get_resource_description');
-        $method->setAccessible(true);
 
         // Test the processed description.
         $processeddescription = $method->invoke(new activity_sender(
diff --git a/lib/tests/moodlenet/course_packager_test.php b/lib/tests/moodlenet/course_packager_test.php
index 780cc3655398..96b1e9af1a40 100644
--- a/lib/tests/moodlenet/course_packager_test.php
+++ b/lib/tests/moodlenet/course_packager_test.php
@@ -49,10 +49,8 @@ public function test_override_task_setting(): void {
         // Fetch all backup task settings.
         $rc = new \ReflectionClass(course_packager::class);
         $rcmgetbackup = $rc->getMethod('get_backup_controller');
-        $rcmgetbackup->setAccessible(true);
         $controller = $rcmgetbackup->invoke($packager);
         $rcmgetall = $rc->getMethod('get_all_task_settings');
-        $rcmgetall->setAccessible(true);
         $tasksettings = $rcmgetall->invoke($packager, $controller);
 
         // Fetch the default settings and grab an example value (setting_root_users).
@@ -75,7 +73,6 @@ public function test_override_task_setting(): void {
         // Override the setting_root_users value, then re-fetch the settings to check the change is reflected.
         $overridevalue = ($oldvalue == 1) ? 0 : 1;
         $rcmoverridesetting = $rc->getMethod('override_task_setting');
-        $rcmoverridesetting->setAccessible(true);
         $rcmoverridesetting->invoke($packager, $tasksettings, $testsettingname, $overridevalue);
         $tasksettings = $rcmgetall->invoke($packager, $controller);
         $rootsettings = $tasksettings[\backup_root_task::class];
diff --git a/lib/tests/moodlenet/course_partial_packager_test.php b/lib/tests/moodlenet/course_partial_packager_test.php
index 996769ee8eb4..d94c42a71f55 100644
--- a/lib/tests/moodlenet/course_partial_packager_test.php
+++ b/lib/tests/moodlenet/course_partial_packager_test.php
@@ -51,11 +51,9 @@ public function test_remove_unselected_activities(): void {
         // Fetch all backup task settings.
         $rc = new \ReflectionClass(course_partial_packager::class);
         $rcmgetbackup = $rc->getMethod('get_backup_controller');
-        $rcmgetbackup->setAccessible(true);
         $controller = $rcmgetbackup->invoke($packager);
 
         $rcmremove = $rc->getMethod('remove_unselected_activities');
-        $rcmremove->setAccessible(true);
         $rcmremove->invoke($packager, $controller);
 
         // Fetch all backup task settings for asserting them.
diff --git a/lib/tests/moodlenet/course_partial_sender_test.php b/lib/tests/moodlenet/course_partial_sender_test.php
index 0fc86fc84e6b..271720e05207 100644
--- a/lib/tests/moodlenet/course_partial_sender_test.php
+++ b/lib/tests/moodlenet/course_partial_sender_test.php
@@ -95,7 +95,6 @@ public function test_prepare_share_contents(): void {
 
         // Set get_file method accessibility.
         $method = new ReflectionMethod(course_partial_sender::class, 'prepare_share_contents');
-        $method->setAccessible(true);
 
         $httpclient = new http_client();
         $moodlenetclient = new moodlenet_client($httpclient, $this->mockoauthclient);
@@ -151,7 +150,6 @@ public function test_get_resource_description(): void {
 
         // Set get_resource_description method accessibility.
         $method = new ReflectionMethod(course_partial_sender::class, 'get_resource_description');
-        $method->setAccessible(true);
 
         // Test the processed description.
         $httpclient = new http_client();
diff --git a/lib/tests/moodlenet/course_sender_test.php b/lib/tests/moodlenet/course_sender_test.php
index 3827e5fdeaea..c6a9739be979 100644
--- a/lib/tests/moodlenet/course_sender_test.php
+++ b/lib/tests/moodlenet/course_sender_test.php
@@ -90,7 +90,6 @@ public function test_prepare_share_contents(): void {
 
         // Set get_file method accessibility.
         $method = new ReflectionMethod(course_sender::class, 'prepare_share_contents');
-        $method->setAccessible(true);
 
         // Test with invalid share format.
         $this->expectException(\moodle_exception::class);
@@ -158,7 +157,6 @@ public function test_get_resource_description(): void {
 
         // Set get_resource_description method accessibility.
         $method = new ReflectionMethod(course_sender::class, 'get_resource_description');
-        $method->setAccessible(true);
 
         // Test the processed description.
         $httpclient = new http_client();
diff --git a/lib/tests/myprofilelib_test.php b/lib/tests/myprofilelib_test.php
index a444ef28da27..fd7344f484bd 100644
--- a/lib/tests/myprofilelib_test.php
+++ b/lib/tests/myprofilelib_test.php
@@ -66,7 +66,6 @@ public function test_core_myprofile_navigation_as_admin() {
         core_myprofile_navigation($this->tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $categories = $reflector->getProperty('categories');
-        $categories->setAccessible(true);
         $cats = $categories->getValue($this->tree);
         $this->assertArrayHasKey('contact', $cats);
         $this->assertArrayHasKey('coursedetails', $cats);
@@ -76,7 +75,6 @@ public function test_core_myprofile_navigation_as_admin() {
         $this->assertArrayHasKey('loginactivity', $cats);
 
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayHasKey('fullprofile', $nodes->getValue($this->tree));
     }
 
@@ -92,7 +90,6 @@ public function test_core_myprofile_navigation_course_without_permission() {
         core_myprofile_navigation($this->tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayNotHasKey('fullprofile', $nodes->getValue($this->tree));
     }
 
@@ -106,7 +103,6 @@ public function test_core_myprofile_navigation_profile_link_as_current_user() {
         core_myprofile_navigation($this->tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayHasKey('editprofile', $nodes->getValue($this->tree));
     }
 
@@ -120,7 +116,6 @@ public function test_core_myprofile_navigation_profile_link_as_admin() {
         core_myprofile_navigation($this->tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayHasKey('editprofile', $nodes->getValue($this->tree));
     }
 
@@ -134,7 +129,6 @@ public function test_core_myprofile_navigation_preference_as_admin() {
         core_myprofile_navigation($this->tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayHasKey('preferences', $nodes->getValue($this->tree));
         $this->assertArrayHasKey('loginas', $nodes->getValue($this->tree));
     }
@@ -151,7 +145,6 @@ public function test_core_myprofile_navigation_preference_without_permission() {
         core_myprofile_navigation($this->tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayNotHasKey('loginas', $nodes->getValue($this->tree));
     }
 
@@ -189,7 +182,6 @@ public function test_core_myprofile_navigation_contact_fields_as_admin() {
         core_myprofile_navigation($this->tree, $this->user, $iscurrentuser, null);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         foreach ($hiddenfields as $field) {
             $this->assertArrayHasKey($field, $nodes->getValue($this->tree));
         }
@@ -214,7 +206,6 @@ public function test_core_myprofile_navigation_contact_field_without_permission(
         core_myprofile_navigation($this->tree, $this->user, $iscurrentuser, null);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         foreach ($hiddenfields as $field) {
             $this->assertArrayNotHasKey($field, $nodes->getValue($this->tree));
         }
@@ -262,7 +253,6 @@ public function test_core_myprofile_navigation_contact_timezone(string $hiddenus
 
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
 
         /** @var \core_user\output\myprofile\node[] $tree */
         $tree = $nodes->getValue($this->tree);
@@ -286,7 +276,6 @@ public function test_core_myprofile_navigation_login_activity() {
         core_myprofile_navigation($this->tree, $this->user, $iscurrentuser, null);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayHasKey('firstaccess', $nodes->getValue($this->tree));
         $this->assertArrayHasKey('lastaccess', $nodes->getValue($this->tree));
         $this->assertArrayHasKey('lastip', $nodes->getValue($this->tree));
@@ -305,7 +294,6 @@ public function test_core_myprofile_navigationn_login_activity_without_permissio
         core_myprofile_navigation($this->tree, $this->user, $iscurrentuser, null);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayNotHasKey('firstaccess', $nodes->getValue($this->tree));
         $this->assertArrayNotHasKey('lastaccess', $nodes->getValue($this->tree));
         $this->assertArrayNotHasKey('lastip', $nodes->getValue($this->tree));
diff --git a/lib/tests/navigation/output/primary_test.php b/lib/tests/navigation/output/primary_test.php
index 649ff0cefe92..b542762f6872 100644
--- a/lib/tests/navigation/output/primary_test.php
+++ b/lib/tests/navigation/output/primary_test.php
@@ -168,7 +168,6 @@ protected function get_custom_menu(string $config): array {
         $CFG->custommenuitems = $config;
         $output = new primary($PAGE);
         $method = new ReflectionMethod('core\navigation\output\primary', 'get_custom_menu');
-        $method->setAccessible(true);
         $renderer = $PAGE->get_renderer('core');
 
         // We can't assert the value of each menuitem "moremenuid" property (because it's random).
@@ -375,7 +374,6 @@ protected function merge_and_render_menus(?string $url = null, ?bool $ismobile =
         $primary = new primary($PAGE);
 
         $method = new ReflectionMethod('core\navigation\output\primary', 'get_primary_nav');
-        $method->setAccessible(true);
         $dataprimary = $method->invoke($primary);
 
         // Take this custom menu that would come from the  setting custommenitems.
@@ -395,7 +393,6 @@ protected function merge_and_render_menus(?string $url = null, ?bool $ismobile =
 
         $datacustom = $this->get_custom_menu($custommenuitems);
         $method = new ReflectionMethod('core\navigation\output\primary', 'merge_primary_and_custom');
-        $method->setAccessible(true);
         $menucomplete = $method->invoke($primary, $dataprimary, $datacustom, $ismobile);
         return $menucomplete;
     }
diff --git a/lib/tests/navigation/views/primary_test.php b/lib/tests/navigation/views/primary_test.php
index 2551a9031b6c..7e210bb80635 100644
--- a/lib/tests/navigation/views/primary_test.php
+++ b/lib/tests/navigation/views/primary_test.php
@@ -126,7 +126,6 @@ public function test_search_and_set_active_node(string $expectedkey, ?string $ke
 
         $primary = new primary($PAGE);
         $method = new ReflectionMethod('core\navigation\views\primary', 'search_and_set_active_node');
-        $method->setAccessible(true);
 
         $result = $method->invoke($primary, $node);
 
diff --git a/lib/tests/navigation/views/secondary_test.php b/lib/tests/navigation/views/secondary_test.php
index 619f295293d4..c99253ffd59d 100644
--- a/lib/tests/navigation/views/secondary_test.php
+++ b/lib/tests/navigation/views/secondary_test.php
@@ -63,7 +63,6 @@ public function test_get_leaf_nodes(float $siteorder, float $courseorder, float
         ];
 
         $method = new ReflectionMethod('core\navigation\views\secondary', 'get_leaf_nodes');
-        $method->setAccessible(true);
         $sortednodes = $method->invoke($secondary, $secondary, $nodes);
         foreach ($sortednodes as $order => $node) {
             $this->assertEquals($expectednodes[$order], $node->key);
@@ -216,7 +215,6 @@ public function test_active_node_scan(string $expectedkey, ?string $key = null,
         $node = $this->get_tree_initilised_to_set_activate($seturl);
         $secondary = new secondary($PAGE);
         $method = new ReflectionMethod('core\navigation\views\secondary', 'active_node_scan');
-        $method->setAccessible(true);
 
         $result = $method->invoke($secondary, $node);
 
@@ -274,7 +272,6 @@ public function test_force_nodes_into_more_menu(array $secondarynavnodesdata, ar
         }
 
         $method = new ReflectionMethod('core\navigation\views\secondary', 'force_nodes_into_more_menu');
-        $method->setAccessible(true);
         $method->invoke($secondary, $defaultmoremenunodes, $maxdisplayednodes);
 
         $actualmoremenunodes = [];
@@ -465,7 +462,6 @@ public function test_nodes_match_current_url(string $selectedurl, string $expect
         $PAGE->set_url($selectedurl);
         $secondary = new secondary($PAGE);
         $method = new ReflectionMethod('core\navigation\views\secondary', 'nodes_match_current_url');
-        $method->setAccessible(true);
         $response = $method->invoke($secondary, $node);
 
         $this->assertSame($response->key ?? null, $expectednode);
@@ -630,7 +626,6 @@ public function test_get_node_with_first_action(string $selectedkey, ?string $ex
 
         $secondary = new secondary($PAGE);
         $method = new ReflectionMethod('core\navigation\views\secondary', 'get_node_with_first_action');
-        $method->setAccessible(true);
         $response = $method->invoke($secondary, $selectednode, $selectednode);
         $this->assertEquals($expected, $response);
     }
@@ -688,7 +683,6 @@ public function test_add_external_nodes_to_secondary(array $structure, array $ex
         }
 
         $method = new ReflectionMethod('core\navigation\views\secondary', 'add_external_nodes_to_secondary');
-        $method->setAccessible(true);
         $method->invoke($secondary, $firstnode, $firstnode, $customparent);
 
         $actualnodes = $separatenode ? $customparent->get_children_key_list() : $secondary->get_children_key_list();
@@ -850,12 +844,10 @@ public function test_get_overflow_menu_data(string $selectedurl, bool $expectedn
         } else {
             // Set the correct node as active.
             $method = new ReflectionMethod('core\navigation\views\secondary', 'scan_for_active_node');
-            $method->setAccessible(true);
             $method->invoke($secondary, $secondary);
         }
 
         $method = new ReflectionMethod('core\navigation\views\secondary', 'get_overflow_menu_data');
-        $method->setAccessible(true);
         $response = $method->invoke($secondary);
         if ($expectednull) {
             $this->assertNull($response);
diff --git a/lib/tests/output/language_menu_test.php b/lib/tests/output/language_menu_test.php
index 7587227f8f30..b7f9f82d9304 100644
--- a/lib/tests/output/language_menu_test.php
+++ b/lib/tests/output/language_menu_test.php
@@ -61,7 +61,6 @@ public function test_get_lang_menu(bool $withadditionallangs, string $language,
 
         $output = new language_menu($PAGE);
         $method = new ReflectionMethod('\core\output\language_menu', 'export_for_template');
-        $method->setAccessible(true);
         $renderer = $PAGE->get_renderer('core');
 
         $response = $method->invoke($output, $renderer);
diff --git a/lib/tests/output/participants_action_bar_test.php b/lib/tests/output/participants_action_bar_test.php
index 6a1468ec5562..9c85e5358fb0 100644
--- a/lib/tests/output/participants_action_bar_test.php
+++ b/lib/tests/output/participants_action_bar_test.php
@@ -57,7 +57,6 @@ public function test_get_content_for_select($type, $expectedcount, $expecteditem
         $PAGE->set_context($context);
         $output = new participants_action_bar($course, $PAGE, null);
         $method = new ReflectionMethod('\core\output\participants_action_bar', 'get_content_for_select');
-        $method->setAccessible(true);
         $renderer = $PAGE->get_renderer('core');
 
         $response = $method->invoke($output, $renderer);
diff --git a/lib/tests/outputrequirementslib_test.php b/lib/tests/outputrequirementslib_test.php
index 28e8bced8db1..a0d9a8507c69 100644
--- a/lib/tests/outputrequirementslib_test.php
+++ b/lib/tests/outputrequirementslib_test.php
@@ -155,7 +155,6 @@ public function test_js_fix_url_moodle_url(\moodle_url $moodleurl, int $cfgslash
         $CFG->slasharguments = $cfgslashargs;
         $rc = new \ReflectionClass(\page_requirements_manager::class);
         $rcm = $rc->getMethod('js_fix_url');
-        $rcm->setAccessible(true);
         $requires = new \page_requirements_manager();
         $actualmoodleurl = $rcm->invokeArgs($requires, [$moodleurl]);
         $this->assertEquals($expected, $actualmoodleurl->out(false));
@@ -239,7 +238,6 @@ public function test_js_fix_url_plain_string(string $url, int $cfgslashargs, str
         $CFG->slasharguments = $cfgslashargs;
         $rc = new \ReflectionClass(\page_requirements_manager::class);
         $rcm = $rc->getMethod('js_fix_url');
-        $rcm->setAccessible(true);
         $requires = new \page_requirements_manager();
         $actualmoodleurl = $rcm->invokeArgs($requires, [$url]);
         $this->assertEquals($expected, $actualmoodleurl->out(false));
@@ -316,7 +314,6 @@ public function js_fix_url_plain_string_provider() {
     public function test_js_fix_url_coding_exception($url, string $exmessage) {
         $rc = new \ReflectionClass(\page_requirements_manager::class);
         $rcm = $rc->getMethod('js_fix_url');
-        $rcm->setAccessible(true);
         $requires = new \page_requirements_manager();
         $this->expectException(\coding_exception::class);
         $this->expectExceptionMessage($exmessage);
diff --git a/lib/tests/session_manager_test.php b/lib/tests/session_manager_test.php
index ad84b7f18cc5..34239875caa4 100644
--- a/lib/tests/session_manager_test.php
+++ b/lib/tests/session_manager_test.php
@@ -916,7 +916,6 @@ public function array_session_diff_provider() {
     public function test_array_session_diff(array $a, array $b, array $expected) {
         $class = new \ReflectionClass('\core\session\manager');
         $method = $class->getMethod('array_session_diff');
-        $method->setAccessible(true);
 
         $result = $method->invokeArgs(null, [$a, $b]);
         $this->assertSame($expected, $result);
diff --git a/lib/tests/session_redis_test.php b/lib/tests/session_redis_test.php
index a77a3375f00f..4d5af406a85e 100644
--- a/lib/tests/session_redis_test.php
+++ b/lib/tests/session_redis_test.php
@@ -368,7 +368,6 @@ public function test_session_redis_encrypt() {
         $sess = new \core\session\redis();
 
         $prop = new \ReflectionProperty(\core\session\redis::class, 'host');
-        $prop->setAccessible(true);
         $this->assertEquals('tls://' . TEST_SESSION_REDIS_HOST, $prop->getValue($sess));
     }
 }
diff --git a/lib/tests/setuplib_test.php b/lib/tests/setuplib_test.php
index 0ef30f714a02..75413706af81 100644
--- a/lib/tests/setuplib_test.php
+++ b/lib/tests/setuplib_test.php
@@ -491,7 +491,6 @@ public function test_core_uuid_generate_uuid_via_pecl_uuid_extension() {
 
         // The \core\uuid::generate_uuid_via_pecl_uuid_extension static method is protected. Use Reflection to call the method.
         $method = new \ReflectionMethod('\core\uuid', 'generate_uuid_via_pecl_uuid_extension');
-        $method->setAccessible(true);
         $uuid = $method->invoke(null);
         $this->assertTrue(self::is_valid_uuid_v4($uuid), "Invalid v4 uuid: '$uuid'");
     }
@@ -508,7 +507,6 @@ public function test_core_uuid_generate_uuid_via_random_bytes() {
 
         // The \core\uuid::generate_uuid_via_random_bytes static method is protected. Use Reflection to call the method.
         $method = new \ReflectionMethod('\core\uuid', 'generate_uuid_via_random_bytes');
-        $method->setAccessible(true);
         $uuid = $method->invoke(null);
         $this->assertTrue(self::is_valid_uuid_v4($uuid), "Invalid v4 uuid: '$uuid'");
     }
diff --git a/lib/tests/xhprof_test.php b/lib/tests/xhprof_test.php
index 60ccbf910db8..43fd556fda69 100644
--- a/lib/tests/xhprof_test.php
+++ b/lib/tests/xhprof_test.php
@@ -180,7 +180,6 @@ public function test_xhprof_topo_sort(array $rundata, array $expectations) {
         // Make moodle_xhprofrun::xhprof_topo_sort() accessible.
         $reflection = new \ReflectionClass('\moodle_xhprofrun');
         $method = $reflection->getMethod('xhprof_topo_sort');
-        $method->setAccessible(true);
         // Sort the data.
         $result = $method->invokeArgs(new \moodle_xhprofrun(), [$rundata]);
         $this->assertIsArray($result);
@@ -227,7 +226,6 @@ public function test_reduce_run_data(array $rundata, array $expectations) {
         // Make moodle_xhprofrun::reduce_run_data() accessible.
         $reflection = new \ReflectionClass('\moodle_xhprofrun');
         $method = $reflection->getMethod('reduce_run_data');
-        $method->setAccessible(true);
         // Reduce the data.
         $result = $method->invokeArgs(new \moodle_xhprofrun(), [$rundata]);
         $this->assertIsArray($result);
diff --git a/lib/thirdpartylibs.xml b/lib/thirdpartylibs.xml
index 5f0ad938744c..79e11d674b37 100644
--- a/lib/thirdpartylibs.xml
+++ b/lib/thirdpartylibs.xml
@@ -155,7 +155,7 @@
     <location>phpmailer</location>
     <name>PHPMailer</name>
     <description>Class for sending email using either sendmail, PHP mail(), or SMTP. Methods are based upon the standard AspEmail(tm) classes.</description>
-    <version>6.8.0</version>
+    <version>6.9.1</version>
     <license>LGPL</license>
     <licenseversion>2.1</licenseversion>
     <repository>https://github.com/PHPMailer/PHPMailer</repository>
@@ -365,7 +365,7 @@ All rights reserved.</copyright>
     <location>openspout</location>
     <name>OpenSpout</name>
     <description>Library to read and write spreadsheet files (CSV, XLSX and ODS).</description>
-    <version>4.15.0</version>
+    <version>4.23.0</version>
     <license>MIT</license>
     <repository>https://github.com/openspout/openspout</repository>
     <copyrights>
diff --git a/lib/upgrade.txt b/lib/upgrade.txt
index 10ce896f2a74..1c94bf2a7dbd 100644
--- a/lib/upgrade.txt
+++ b/lib/upgrade.txt
@@ -37,9 +37,9 @@ information provided here is intended especially for developers.
     - get_attempts_available(): Used to get the number of attempts available for the task.
 * There is a new DML method $DB->get_fieldset. For some reason, this did not exist even though get_fieldset_select etc. did.
 * The following callbacks have been migrated to hooks:
-  - before_standard_html_head() -> core\hook\output\standard_head_html_prepend
+  - before_standard_html_head() -> core\hook\output\before_standard_head_html_generation
 * Deprecated PARAM_ types with the exception of PARAM_CLEAN now emit a deprecation exception. These were all deprecated in Moodle 2.0.
-* A new \core\deprecated attribute can be used to more clearly describe deprecated methods.
+* A new \core\attribute\deprecated attribute can be used to more clearly describe deprecated methods.
 * A new \core\deprecation class can be used to inspect for deprecated attributes:
   - `\core\deprecation::is_deprecated(example::class);`
   - `\core\deprecation::emit_deprecation_if_present([self::class, 'some_method']);`
@@ -76,6 +76,20 @@ information provided here is intended especially for developers.
   as an alternative to implementing the \core\hook\described_hook interface.
 * The hook API now supports the use of the new \core\attribute\hook\replaces_callbacks() attribute
   as an alternative to implementing the \core\hook\deprecated_callback_replacement interface.
+* The following previously deprecated methods have been removed and can no longer be used:
+  - `question_preview_url`
+  - `question_preview_popup_params`
+  - `question_hash`
+  - `question_make_export_url`
+  - `question_get_export_single_question_url`
+  - `question_remove_stale_questions_from_category`
+  - `flatten_category_tree`
+  - `add_indented_names`
+  - `question_category_select_menu`
+  - `get_categories_for_contexts`
+  - `question_category_options`
+  - `question_add_context_in_key`
+  - `question_fix_top_names`
 
 === 4.3 ===
 
diff --git a/lib/weblib.php b/lib/weblib.php
index 0cac8cf5e83f..a4e6dbb9cd5c 100644
--- a/lib/weblib.php
+++ b/lib/weblib.php
@@ -30,6 +30,8 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
+use Psr\Http\Message\UriInterface;
+
 defined('MOODLE_INTERNAL') || die();
 
 // Constants.
@@ -770,6 +772,26 @@ public function set_slashargument($path, $parameter = 'file', $supported = null)
 
     // Static factory methods.
 
+    /**
+     * Create a new moodle_url instance from a UriInterface.
+     *
+     * @param UriInterface $uri
+     * @return self
+     */
+    public static function from_uri(UriInterface $uri): self {
+        $url = new self(
+            url: $uri->getScheme() . '://' . $uri->getAuthority() . $uri->getPath(),
+            anchor: $uri->getFragment() ?: null,
+        );
+
+        $params = $uri->getQuery();
+        foreach (explode('&', $params) as $param) {
+            $url->param(...explode('=', $param, 2));
+        }
+
+        return $url;
+    }
+
     /**
      * General moodle file url.
      *
diff --git a/media/player/videojs/amd/build/video-lazy.min.js b/media/player/videojs/amd/build/video-lazy.min.js
index 72bad06d90ad..fd1913983af1 100644
--- a/media/player/videojs/amd/build/video-lazy.min.js
+++ b/media/player/videojs/amd/build/video-lazy.min.js
@@ -1,6 +1,6 @@
 /**
  * @license
- * Video.js 8.3.0 <http://videojs.com/>
+ * Video.js 8.10.0 <http://videojs.com/>
  * Copyright Brightcove, Inc. <https://www.brightcove.com/>
  * Available under Apache License Version 2.0
  * <https://github.com/videojs/video.js/blob/main/LICENSE>
@@ -9,7 +9,7 @@
  * Available under Apache License Version 2.0
  * <https://github.com/mozilla/vtt.js/blob/main/LICENSE>
  */
-!function(global,factory){"object"==typeof exports&&"undefined"!=typeof module?module.exports=factory():"function"==typeof define&&define.amd?define("media_videojs/video-lazy",factory):(global="undefined"!=typeof globalThis?globalThis:global||self).videojs=factory()}(window,(function(){const hooks_={},hooks=function(type,fn){return hooks_[type]=hooks_[type]||[],fn&&(hooks_[type]=hooks_[type].concat(fn)),hooks_[type]},removeHook=function(type,fn){const index=hooks(type).indexOf(fn);return!(index<=-1)&&(hooks_[type]=hooks_[type].slice(),hooks_[type].splice(index,1),!0)},FullscreenApi={prefixed:!0},apiMap=[["requestFullscreen","exitFullscreen","fullscreenElement","fullscreenEnabled","fullscreenchange","fullscreenerror","fullscreen"],["webkitRequestFullscreen","webkitExitFullscreen","webkitFullscreenElement","webkitFullscreenEnabled","webkitfullscreenchange","webkitfullscreenerror","-webkit-full-screen"],["mozRequestFullScreen","mozCancelFullScreen","mozFullScreenElement","mozFullScreenEnabled","mozfullscreenchange","mozfullscreenerror","-moz-full-screen"],["msRequestFullscreen","msExitFullscreen","msFullscreenElement","msFullscreenEnabled","MSFullscreenChange","MSFullscreenError","-ms-fullscreen"]],specApi=apiMap[0];let browserApi;for(let i=0;i<apiMap.length;i++)if(apiMap[i][1]in document){browserApi=apiMap[i];break}if(browserApi){for(let i=0;i<browserApi.length;i++)FullscreenApi[specApi[i]]=browserApi[i];FullscreenApi.prefixed=browserApi[0]!==specApi[0]}let history=[];const log$1=function createLogger$1(name){let logByType,level="info";const log=function(){for(var _len2=arguments.length,args=new Array(_len2),_key2=0;_key2<_len2;_key2++)args[_key2]=arguments[_key2];logByType("log",level,args)};return logByType=((name,log)=>(type,level,args)=>{const lvl=log.levels[level],lvlRegExp=new RegExp("^(".concat(lvl,")$"));if("log"!==type&&args.unshift(type.toUpperCase()+":"),args.unshift(name+":"),history){history.push([].concat(args));const splice=history.length-1e3;history.splice(0,splice>0?splice:0)}if(!window.console)return;let fn=window.console[type];fn||"debug"!==type||(fn=window.console.info||window.console.log),fn&&lvl&&lvlRegExp.test(type)&&fn[Array.isArray(args)?"apply":"call"](window.console,args)})(name,log),log.createLogger=subname=>createLogger$1(name+": "+subname),log.levels={all:"debug|log|warn|error",off:"",debug:"debug|log|warn|error",info:"log|warn|error",warn:"warn|error",error:"error",DEFAULT:level},log.level=lvl=>{if("string"==typeof lvl){if(!log.levels.hasOwnProperty(lvl))throw new Error('"'.concat(lvl,'" in not a valid log level'));level=lvl}return level},(log.history=()=>history?[].concat(history):[]).filter=fname=>(history||[]).filter((historyItem=>new RegExp(".*".concat(fname,".*")).test(historyItem[0]))),log.history.clear=()=>{history&&(history.length=0)},log.history.disable=()=>{null!==history&&(history.length=0,history=null)},log.history.enable=()=>{null===history&&(history=[])},log.error=function(){for(var _len3=arguments.length,args=new Array(_len3),_key3=0;_key3<_len3;_key3++)args[_key3]=arguments[_key3];return logByType("error",level,args)},log.warn=function(){for(var _len4=arguments.length,args=new Array(_len4),_key4=0;_key4<_len4;_key4++)args[_key4]=arguments[_key4];return 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style.className=className,style},setTextContent=function(el,content){el.styleSheet?el.styleSheet.cssText=content:el.textContent=content};var DomData=new WeakMap;let _supportsPassive,_guid=3;function newGUID(){return _guid++}function _cleanUpEvents(elem,type){if(!DomData.has(elem))return;const data=DomData.get(elem);0===data.handlers[type].length&&(delete data.handlers[type],elem.removeEventListener?elem.removeEventListener(type,data.dispatcher,!1):elem.detachEvent&&elem.detachEvent("on"+type,data.dispatcher)),Object.getOwnPropertyNames(data.handlers).length<=0&&(delete data.handlers,delete data.dispatcher,delete data.disabled),0===Object.getOwnPropertyNames(data).length&&DomData.delete(elem)}function _handleMultipleEvents(fn,elem,types,callback){types.forEach((function(type){fn(elem,type,callback)}))}function fixEvent(event){if(event.fixed_)return event;function returnTrue(){return!0}function returnFalse(){return!1}if(!event||!event.isPropagationStopped||!event.isImmediatePropagationStopped){const old=event||window.event;event={};for(const key in 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event.target[event.type]&&event.target[event.type](),targetData.disabled=!1)}return!event.defaultPrevented}function one(elem,type,fn){if(Array.isArray(type))return _handleMultipleEvents(one,elem,type,fn);const func=function(){off(elem,type,func),fn.apply(this,arguments)};func.guid=fn.guid=fn.guid||newGUID(),on(elem,type,func)}function any(elem,type,fn){const func=function(){off(elem,type,func),fn.apply(this,arguments)};func.guid=fn.guid=fn.guid||newGUID(),on(elem,type,func)}var Events=Object.freeze({__proto__:null,fixEvent:fixEvent,on:on,off:off,trigger:trigger,one:one,any:any});const bind_=function(context,fn,uid){fn.guid||(fn.guid=newGUID());const bound=fn.bind(context);return bound.guid=uid?uid+"_"+fn.guid:fn.guid,bound},throttle=function(fn,wait){let last=window.performance.now();return function(){const now=window.performance.now();now-last>=wait&&(fn(...arguments),last=now)}},debounce=function(func,wait,immediate){let timeout,context=arguments.length>3&&void 0!==arguments[3]?arguments[3]:window;const cancel=()=>{context.clearTimeout(timeout),timeout=null},debounced=function(){const self=this,args=arguments;let later=function(){timeout=null,later=null,immediate||func.apply(self,args)};!timeout&&immediate&&func.apply(self,args),context.clearTimeout(timeout),timeout=context.setTimeout(later,wait)};return debounced.cancel=cancel,debounced};var Fn=Object.freeze({__proto__:null,UPDATE_REFRESH_INTERVAL:30,bind_:bind_,throttle:throttle,debounce:debounce});let EVENT_MAP;class EventTarget$2{on(type,fn){const ael=this.addEventListener;this.addEventListener=()=>{},on(this,type,fn),this.addEventListener=ael}off(type,fn){off(this,type,fn)}one(type,fn){const ael=this.addEventListener;this.addEventListener=()=>{},one(this,type,fn),this.addEventListener=ael}any(type,fn){const ael=this.addEventListener;this.addEventListener=()=>{},any(this,type,fn),this.addEventListener=ael}trigger(event){const type=event.type||event;"string"==typeof event&&(event={type:type}),event=fixEvent(event),this.allowedEvents_[type]&&this["on"+type]&&this["on"+type](event),trigger(this,event)}queueTrigger(event){EVENT_MAP||(EVENT_MAP=new Map);const type=event.type||event;let map=EVENT_MAP.get(this);map||(map=new Map,EVENT_MAP.set(this,map));const oldTimeout=map.get(type);map.delete(type),window.clearTimeout(oldTimeout);const timeout=window.setTimeout((()=>{map.delete(type),0===map.size&&(map=null,EVENT_MAP.delete(this)),this.trigger(event)}),0);map.set(type,timeout)}}EventTarget$2.prototype.allowedEvents_={},EventTarget$2.prototype.addEventListener=EventTarget$2.prototype.on,EventTarget$2.prototype.removeEventListener=EventTarget$2.prototype.off,EventTarget$2.prototype.dispatchEvent=EventTarget$2.prototype.trigger;const objName=obj=>"function"==typeof obj.name?obj.name():"string"==typeof obj.name?obj.name:obj.name_?obj.name_:obj.constructor&&obj.constructor.name?obj.constructor.name:typeof obj,isEvented=object=>object instanceof EventTarget$2||!!object.eventBusEl_&&["on","one","off","trigger"].every((k=>"function"==typeof object[k])),isValidEventType=type=>"string"==typeof type&&/\S/.test(type)||Array.isArray(type)&&!!type.length,validateTarget=(target,obj,fnName)=>{if(!target||!target.nodeName&&!isEvented(target))throw new Error("Invalid target for ".concat(objName(obj),"#").concat(fnName,"; must be a DOM node or evented object."))},validateEventType=(type,obj,fnName)=>{if(!isValidEventType(type))throw new Error("Invalid event type for ".concat(objName(obj),"#").concat(fnName,"; must be a non-empty string or array."))},validateListener=(listener,obj,fnName)=>{if("function"!=typeof listener)throw new Error("Invalid listener for ".concat(objName(obj),"#").concat(fnName,"; must be a function."))},normalizeListenArgs=(self,args,fnName)=>{const isTargetingSelf=args.length<3||args[0]===self||args[0]===self.eventBusEl_;let target,type,listener;return isTargetingSelf?(target=self.eventBusEl_,args.length>=3&&args.shift(),[type,listener]=args):[target,type,listener]=args,validateTarget(target,self,fnName),validateEventType(type,self,fnName),validateListener(listener,self,fnName),listener=bind_(self,listener),{isTargetingSelf:isTargetingSelf,target:target,type:type,listener:listener}},listen=(target,method,type,listener)=>{validateTarget(target,target,method),target.nodeName?Events[method](target,type,listener):target[method](type,listener)},EventedMixin={on(){for(var _len9=arguments.length,args=new Array(_len9),_key9=0;_key9<_len9;_key9++)args[_key9]=arguments[_key9];const{isTargetingSelf:isTargetingSelf,target:target,type:type,listener:listener}=normalizeListenArgs(this,args,"on");if(listen(target,"on",type,listener),!isTargetingSelf){const removeListenerOnDispose=()=>this.off(target,type,listener);removeListenerOnDispose.guid=listener.guid;const removeRemoverOnTargetDispose=()=>this.off("dispose",removeListenerOnDispose);removeRemoverOnTargetDispose.guid=listener.guid,listen(this,"on","dispose",removeListenerOnDispose),listen(target,"on","dispose",removeRemoverOnTargetDispose)}},one(){for(var _this=this,_len10=arguments.length,args=new Array(_len10),_key10=0;_key10<_len10;_key10++)args[_key10]=arguments[_key10];const{isTargetingSelf:isTargetingSelf,target:target,type:type,listener:listener}=normalizeListenArgs(this,args,"one");if(isTargetingSelf)listen(target,"one",type,listener);else{const wrapper=function(){_this.off(target,type,wrapper);for(var _len11=arguments.length,largs=new Array(_len11),_key11=0;_key11<_len11;_key11++)largs[_key11]=arguments[_key11];listener.apply(null,largs)};wrapper.guid=listener.guid,listen(target,"one",type,wrapper)}},any(){for(var _this2=this,_len12=arguments.length,args=new Array(_len12),_key12=0;_key12<_len12;_key12++)args[_key12]=arguments[_key12];const{isTargetingSelf:isTargetingSelf,target:target,type:type,listener:listener}=normalizeListenArgs(this,args,"any");if(isTargetingSelf)listen(target,"any",type,listener);else{const wrapper=function(){_this2.off(target,type,wrapper);for(var _len13=arguments.length,largs=new Array(_len13),_key13=0;_key13<_len13;_key13++)largs[_key13]=arguments[_key13];listener.apply(null,largs)};wrapper.guid=listener.guid,listen(target,"any",type,wrapper)}},off(targetOrType,typeOrListener,listener){if(!targetOrType||isValidEventType(targetOrType))off(this.eventBusEl_,targetOrType,typeOrListener);else{const target=targetOrType,type=typeOrListener;validateTarget(target,this,"off"),validateEventType(type,this,"off"),validateListener(listener,this,"off"),listener=bind_(this,listener),this.off("dispose",listener),target.nodeName?(off(target,type,listener),off(target,"dispose",listener)):isEvented(target)&&(target.off(type,listener),target.off("dispose",listener))}},trigger(event,hash){validateTarget(this.eventBusEl_,this,"trigger");const type=event&&"string"!=typeof event?event.type:event;if(!isValidEventType(type))throw new Error("Invalid event type for ".concat(objName(this),"#trigger; ")+"must be a non-empty string or object with a type key that has a non-empty value.");return trigger(this.eventBusEl_,event,hash)}};function evented(target){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};const{eventBusKey:eventBusKey}=options;if(eventBusKey){if(!target[eventBusKey].nodeName)throw new Error('The eventBusKey "'.concat(eventBusKey,'" does not refer to an element.'));target.eventBusEl_=target[eventBusKey]}else target.eventBusEl_=createEl("span",{className:"vjs-event-bus"});return Object.assign(target,EventedMixin),target.eventedCallbacks&&target.eventedCallbacks.forEach((callback=>{callback()})),target.on("dispose",(()=>{target.off(),[target,target.el_,target.eventBusEl_].forEach((function(val){val&&DomData.has(val)&&DomData.delete(val)})),window.setTimeout((()=>{target.eventBusEl_=null}),0)})),target}const StatefulMixin={state:{},setState(stateUpdates){let changes;return"function"==typeof stateUpdates&&(stateUpdates=stateUpdates()),each(stateUpdates,((value,key)=>{this.state[key]!==value&&(changes=changes||{},changes[key]={from:this.state[key],to:value}),this.state[key]=value})),changes&&isEvented(this)&&this.trigger({changes:changes,type:"statechanged"}),changes}};function stateful(target,defaultState){return Object.assign(target,StatefulMixin),target.state=Object.assign({},target.state,defaultState),"function"==typeof target.handleStateChanged&&isEvented(target)&&target.on("statechanged",target.handleStateChanged),target}const toLowerCase=function(string){return"string"!=typeof string?string:string.replace(/./,(w=>w.toLowerCase()))},toTitleCase$1=function(string){return"string"!=typeof string?string:string.replace(/./,(w=>w.toUpperCase()))},titleCaseEquals=function(str1,str2){return toTitleCase$1(str1)===toTitleCase$1(str2)};var Str=Object.freeze({__proto__:null,toLowerCase:toLowerCase,toTitleCase:toTitleCase$1,titleCaseEquals:titleCaseEquals}),commonjsGlobal="undefined"!=typeof globalThis?globalThis:"undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:{};function createCommonjsModule(fn,module){return fn(module={exports:{}},module.exports),module.exports}var keycode=createCommonjsModule((function(module,exports){function keyCode(searchInput){if(searchInput&&"object"==typeof searchInput){var hasKeyCode=searchInput.which||searchInput.keyCode||searchInput.charCode;hasKeyCode&&(searchInput=hasKeyCode)}if("number"==typeof searchInput)return names[searchInput];var foundNamedKey,search=String(searchInput);return(foundNamedKey=codes[search.toLowerCase()])?foundNamedKey:(foundNamedKey=aliases[search.toLowerCase()])||(1===search.length?search.charCodeAt(0):void 0)}keyCode.isEventKey=function(event,nameOrCode){if(event&&"object"==typeof event){var keyCode=event.which||event.keyCode||event.charCode;if(null==keyCode)return!1;if("string"==typeof nameOrCode){var foundNamedKey;if(foundNamedKey=codes[nameOrCode.toLowerCase()])return foundNamedKey===keyCode;if(foundNamedKey=aliases[nameOrCode.toLowerCase()])return foundNamedKey===keyCode}else if("number"==typeof nameOrCode)return nameOrCode===keyCode;return!1}};var codes=(exports=module.exports=keyCode).code=exports.codes={backspace:8,tab:9,enter:13,shift:16,ctrl:17,alt:18,"pause/break":19,"caps lock":20,esc:27,space:32,"page up":33,"page down":34,end:35,home:36,left:37,up:38,right:39,down:40,insert:45,delete:46,command:91,"left command":91,"right command":93,"numpad *":106,"numpad +":107,"numpad -":109,"numpad .":110,"numpad /":111,"num lock":144,"scroll lock":145,"my computer":182,"my calculator":183,";":186,"=":187,",":188,"-":189,".":190,"/":191,"`":192,"[":219,"\\":220,"]":221,"'":222},aliases=exports.aliases={windows:91,"⇧":16,"⌥":18,"⌃":17,"⌘":91,ctl:17,control:17,option:18,pause:19,break:19,caps:20,return:13,escape:27,spc:32,spacebar:32,pgup:33,pgdn:34,ins:45,del:46,cmd:91};for(i=97;i<123;i++)codes[String.fromCharCode(i)]=i-32;for(var i=48;i<58;i++)codes[i-48]=i;for(i=1;i<13;i++)codes["f"+i]=i+111;for(i=0;i<10;i++)codes["numpad "+i]=i+96;var names=exports.names=exports.title={};for(i in codes)names[codes[i]]=i;for(var alias in aliases)codes[alias]=aliases[alias]}));keycode.code,keycode.codes,keycode.aliases,keycode.names,keycode.title;class Component$1{constructor(player,options,ready){if(!player&&this.play?this.player_=player=this:this.player_=player,this.isDisposed_=!1,this.parentComponent_=null,this.options_=merge$2({},this.options_),options=this.options_=merge$2(this.options_,options),this.id_=options.id||options.el&&options.el.id,!this.id_){const id=player&&player.id&&player.id()||"no_player";this.id_="".concat(id,"_component_").concat(newGUID())}this.name_=options.name||null,options.el?this.el_=options.el:!1!==options.createEl&&(this.el_=this.createEl()),options.className&&this.el_&&options.className.split(" ").forEach((c=>this.addClass(c))),["on","off","one","any","trigger"].forEach((fn=>{this[fn]=void 0})),!1!==options.evented&&(evented(this,{eventBusKey:this.el_?"el_":null}),this.handleLanguagechange=this.handleLanguagechange.bind(this),this.on(this.player_,"languagechange",this.handleLanguagechange)),stateful(this,this.constructor.defaultState),this.children_=[],this.childIndex_={},this.childNameIndex_={},this.setTimeoutIds_=new Set,this.setIntervalIds_=new Set,this.rafIds_=new Set,this.namedRafs_=new Map,this.clearingTimersOnDispose_=!1,!1!==options.initChildren&&this.initChildren(),this.ready(ready),!1!==options.reportTouchActivity&&this.enableTouchActivity()}on(type,fn){}off(type,fn){}one(type,fn){}any(type,fn){}trigger(event){}dispose(){let options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};if(!this.isDisposed_){if(this.readyQueue_&&(this.readyQueue_.length=0),this.trigger({type:"dispose",bubbles:!1}),this.isDisposed_=!0,this.children_)for(let i=this.children_.length-1;i>=0;i--)this.children_[i].dispose&&this.children_[i].dispose();this.children_=null,this.childIndex_=null,this.childNameIndex_=null,this.parentComponent_=null,this.el_&&(this.el_.parentNode&&(options.restoreEl?this.el_.parentNode.replaceChild(options.restoreEl,this.el_):this.el_.parentNode.removeChild(this.el_)),this.el_=null),this.player_=null}}isDisposed(){return Boolean(this.isDisposed_)}player(){return this.player_}options(obj){return obj?(this.options_=merge$2(this.options_,obj),this.options_):this.options_}el(){return this.el_}createEl(tagName,properties,attributes){return createEl(tagName,properties,attributes)}localize(string,tokens){let defaultValue=arguments.length>2&&void 0!==arguments[2]?arguments[2]:string;const code=this.player_.language&&this.player_.language(),languages=this.player_.languages&&this.player_.languages(),language=languages&&languages[code],primaryCode=code&&code.split("-")[0],primaryLang=languages&&languages[primaryCode];let localizedString=defaultValue;return language&&language[string]?localizedString=language[string]:primaryLang&&primaryLang[string]&&(localizedString=primaryLang[string]),tokens&&(localizedString=localizedString.replace(/\{(\d+)\}/g,(function(match,index){const value=tokens[index-1];let ret=value;return void 0===value&&(ret=match),ret}))),localizedString}handleLanguagechange(){}contentEl(){return this.contentEl_||this.el_}id(){return this.id_}name(){return this.name_}children(){return this.children_}getChildById(id){return this.childIndex_[id]}getChild(name){if(name)return this.childNameIndex_[name]}getDescendant(){for(var _len14=arguments.length,names=new Array(_len14),_key14=0;_key14<_len14;_key14++)names[_key14]=arguments[_key14];names=names.reduce(((acc,n)=>acc.concat(n)),[]);let currentChild=this;for(let i=0;i<names.length;i++)if(currentChild=currentChild.getChild(names[i]),!currentChild||!currentChild.getChild)return;return currentChild}addChild(child){let component,componentName,options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},index=arguments.length>2&&void 0!==arguments[2]?arguments[2]:this.children_.length;if("string"==typeof child){componentName=toTitleCase$1(child);const componentClassName=options.componentClass||componentName;options.name=componentName;const ComponentClass=Component$1.getComponent(componentClassName);if(!ComponentClass)throw new Error("Component ".concat(componentClassName," does not exist"));if("function"!=typeof ComponentClass)return null;component=new ComponentClass(this.player_||this,options)}else component=child;if(component.parentComponent_&&component.parentComponent_.removeChild(component),this.children_.splice(index,0,component),component.parentComponent_=this,"function"==typeof component.id&&(this.childIndex_[component.id()]=component),componentName=componentName||component.name&&toTitleCase$1(component.name()),componentName&&(this.childNameIndex_[componentName]=component,this.childNameIndex_[toLowerCase(componentName)]=component),"function"==typeof component.el&&component.el()){let refNode=null;this.children_[index+1]&&(this.children_[index+1].el_?refNode=this.children_[index+1].el_:isEl(this.children_[index+1])&&(refNode=this.children_[index+1])),this.contentEl().insertBefore(component.el(),refNode)}return component}removeChild(component){if("string"==typeof component&&(component=this.getChild(component)),!component||!this.children_)return;let childFound=!1;for(let i=this.children_.length-1;i>=0;i--)if(this.children_[i]===component){childFound=!0,this.children_.splice(i,1);break}if(!childFound)return;component.parentComponent_=null,this.childIndex_[component.id()]=null,this.childNameIndex_[toTitleCase$1(component.name())]=null,this.childNameIndex_[toLowerCase(component.name())]=null;const compEl=component.el();compEl&&compEl.parentNode===this.contentEl()&&this.contentEl().removeChild(component.el())}initChildren(){const children=this.options_.children;if(children){const parentOptions=this.options_,handleAdd=child=>{const name=child.name;let opts=child.opts;if(void 0!==parentOptions[name]&&(opts=parentOptions[name]),!1===opts)return;!0===opts&&(opts={}),opts.playerOptions=this.options_.playerOptions;const newChild=this.addChild(name,opts);newChild&&(this[name]=newChild)};let workingChildren;const Tech=Component$1.getComponent("Tech");workingChildren=Array.isArray(children)?children:Object.keys(children),workingChildren.concat(Object.keys(this.options_).filter((function(child){return!workingChildren.some((function(wchild){return"string"==typeof wchild?child===wchild:child===wchild.name}))}))).map((child=>{let name,opts;return"string"==typeof child?(name=child,opts=children[name]||this.options_[name]||{}):(name=child.name,opts=child),{name:name,opts:opts}})).filter((child=>{const c=Component$1.getComponent(child.opts.componentClass||toTitleCase$1(child.name));return c&&!Tech.isTech(c)})).forEach(handleAdd)}}buildCSSClass(){return""}ready(fn){let sync=arguments.length>1&&void 0!==arguments[1]&&arguments[1];if(fn)return this.isReady_?void(sync?fn.call(this):this.setTimeout(fn,1)):(this.readyQueue_=this.readyQueue_||[],void this.readyQueue_.push(fn))}triggerReady(){this.isReady_=!0,this.setTimeout((function(){const readyQueue=this.readyQueue_;this.readyQueue_=[],readyQueue&&readyQueue.length>0&&readyQueue.forEach((function(fn){fn.call(this)}),this),this.trigger("ready")}),1)}$(selector,context){return $(selector,context||this.contentEl())}$$(selector,context){return $$(selector,context||this.contentEl())}hasClass(classToCheck){return hasClass(this.el_,classToCheck)}addClass(){for(var _len15=arguments.length,classesToAdd=new Array(_len15),_key15=0;_key15<_len15;_key15++)classesToAdd[_key15]=arguments[_key15];addClass(this.el_,...classesToAdd)}removeClass(){for(var _len16=arguments.length,classesToRemove=new Array(_len16),_key16=0;_key16<_len16;_key16++)classesToRemove[_key16]=arguments[_key16];removeClass(this.el_,...classesToRemove)}toggleClass(classToToggle,predicate){toggleClass(this.el_,classToToggle,predicate)}show(){this.removeClass("vjs-hidden")}hide(){this.addClass("vjs-hidden")}lockShowing(){this.addClass("vjs-lock-showing")}unlockShowing(){this.removeClass("vjs-lock-showing")}getAttribute(attribute){return getAttribute(this.el_,attribute)}setAttribute(attribute,value){setAttribute(this.el_,attribute,value)}removeAttribute(attribute){removeAttribute(this.el_,attribute)}width(num,skipListeners){return this.dimension("width",num,skipListeners)}height(num,skipListeners){return this.dimension("height",num,skipListeners)}dimensions(width,height){this.width(width,!0),this.height(height)}dimension(widthOrHeight,num,skipListeners){if(void 0!==num)return null!==num&&num==num||(num=0),-1!==(""+num).indexOf("%")||-1!==(""+num).indexOf("px")?this.el_.style[widthOrHeight]=num:this.el_.style[widthOrHeight]="auto"===num?"":num+"px",void(skipListeners||this.trigger("componentresize"));if(!this.el_)return 0;const val=this.el_.style[widthOrHeight],pxIndex=val.indexOf("px");return-1!==pxIndex?parseInt(val.slice(0,pxIndex),10):parseInt(this.el_["offset"+toTitleCase$1(widthOrHeight)],10)}currentDimension(widthOrHeight){let computedWidthOrHeight=0;if("width"!==widthOrHeight&&"height"!==widthOrHeight)throw new Error("currentDimension only accepts width or height value");if(computedWidthOrHeight=computedStyle(this.el_,widthOrHeight),computedWidthOrHeight=parseFloat(computedWidthOrHeight),0===computedWidthOrHeight||isNaN(computedWidthOrHeight)){const rule="offset".concat(toTitleCase$1(widthOrHeight));computedWidthOrHeight=this.el_[rule]}return computedWidthOrHeight}currentDimensions(){return{width:this.currentDimension("width"),height:this.currentDimension("height")}}currentWidth(){return this.currentDimension("width")}currentHeight(){return this.currentDimension("height")}focus(){this.el_.focus()}blur(){this.el_.blur()}handleKeyDown(event){this.player_&&(keycode.isEventKey(event,"Tab")||event.stopPropagation(),this.player_.handleKeyDown(event))}handleKeyPress(event){this.handleKeyDown(event)}emitTapEvents(){let touchStart=0,firstTouch=null;let couldBeTap;this.on("touchstart",(function(event){1===event.touches.length&&(firstTouch={pageX:event.touches[0].pageX,pageY:event.touches[0].pageY},touchStart=window.performance.now(),couldBeTap=!0)})),this.on("touchmove",(function(event){if(event.touches.length>1)couldBeTap=!1;else if(firstTouch){const xdiff=event.touches[0].pageX-firstTouch.pageX,ydiff=event.touches[0].pageY-firstTouch.pageY;Math.sqrt(xdiff*xdiff+ydiff*ydiff)>10&&(couldBeTap=!1)}}));const noTap=function(){couldBeTap=!1};this.on("touchleave",noTap),this.on("touchcancel",noTap),this.on("touchend",(function(event){if(firstTouch=null,!0===couldBeTap){window.performance.now()-touchStart<200&&(event.preventDefault(),this.trigger("tap"))}}))}enableTouchActivity(){if(!this.player()||!this.player().reportUserActivity)return;const report=bind_(this.player(),this.player().reportUserActivity);let touchHolding;this.on("touchstart",(function(){report(),this.clearInterval(touchHolding),touchHolding=this.setInterval(report,250)}));const touchEnd=function(event){report(),this.clearInterval(touchHolding)};this.on("touchmove",report),this.on("touchend",touchEnd),this.on("touchcancel",touchEnd)}setTimeout(fn,timeout){var timeoutId;return fn=bind_(this,fn),this.clearTimersOnDispose_(),timeoutId=window.setTimeout((()=>{this.setTimeoutIds_.has(timeoutId)&&this.setTimeoutIds_.delete(timeoutId),fn()}),timeout),this.setTimeoutIds_.add(timeoutId),timeoutId}clearTimeout(timeoutId){return this.setTimeoutIds_.has(timeoutId)&&(this.setTimeoutIds_.delete(timeoutId),window.clearTimeout(timeoutId)),timeoutId}setInterval(fn,interval){fn=bind_(this,fn),this.clearTimersOnDispose_();const intervalId=window.setInterval(fn,interval);return this.setIntervalIds_.add(intervalId),intervalId}clearInterval(intervalId){return this.setIntervalIds_.has(intervalId)&&(this.setIntervalIds_.delete(intervalId),window.clearInterval(intervalId)),intervalId}requestAnimationFrame(fn){var id;return this.clearTimersOnDispose_(),fn=bind_(this,fn),id=window.requestAnimationFrame((()=>{this.rafIds_.has(id)&&this.rafIds_.delete(id),fn()})),this.rafIds_.add(id),id}requestNamedAnimationFrame(name,fn){if(this.namedRafs_.has(name))return;this.clearTimersOnDispose_(),fn=bind_(this,fn);const id=this.requestAnimationFrame((()=>{fn(),this.namedRafs_.has(name)&&this.namedRafs_.delete(name)}));return this.namedRafs_.set(name,id),name}cancelNamedAnimationFrame(name){this.namedRafs_.has(name)&&(this.cancelAnimationFrame(this.namedRafs_.get(name)),this.namedRafs_.delete(name))}cancelAnimationFrame(id){return this.rafIds_.has(id)&&(this.rafIds_.delete(id),window.cancelAnimationFrame(id)),id}clearTimersOnDispose_(){this.clearingTimersOnDispose_||(this.clearingTimersOnDispose_=!0,this.one("dispose",(()=>{[["namedRafs_","cancelNamedAnimationFrame"],["rafIds_","cancelAnimationFrame"],["setTimeoutIds_","clearTimeout"],["setIntervalIds_","clearInterval"]].forEach((_ref4=>{let[idName,cancelName]=_ref4;this[idName].forEach(((val,key)=>this[cancelName](key)))})),this.clearingTimersOnDispose_=!1})))}static registerComponent(name,ComponentToRegister){if("string"!=typeof name||!name)throw new Error('Illegal component name, "'.concat(name,'"; must be a non-empty string.'));const Tech=Component$1.getComponent("Tech"),isTech=Tech&&Tech.isTech(ComponentToRegister),isComp=Component$1===ComponentToRegister||Component$1.prototype.isPrototypeOf(ComponentToRegister.prototype);if(isTech||!isComp){let reason;throw reason=isTech?"techs must be registered using Tech.registerTech()":"must be a Component subclass",new Error('Illegal component, "'.concat(name,'"; ').concat(reason,"."))}name=toTitleCase$1(name),Component$1.components_||(Component$1.components_={});const Player=Component$1.getComponent("Player");if("Player"===name&&Player&&Player.players){const players=Player.players,playerNames=Object.keys(players);if(players&&playerNames.length>0&&playerNames.map((pname=>players[pname])).every(Boolean))throw new Error("Can not register Player component after player has been created.")}return Component$1.components_[name]=ComponentToRegister,Component$1.components_[toLowerCase(name)]=ComponentToRegister,ComponentToRegister}static getComponent(name){if(name&&Component$1.components_)return Component$1.components_[name]}}function getRange(fnName,valueIndex,ranges,rangeIndex){return function(fnName,index,maxIndex){if("number"!=typeof index||index<0||index>maxIndex)throw new Error("Failed to execute '".concat(fnName,"' on 'TimeRanges': The index provided (").concat(index,") is non-numeric or out of bounds (0-").concat(maxIndex,")."))}(fnName,rangeIndex,ranges.length-1),ranges[rangeIndex][valueIndex]}function createTimeRangesObj(ranges){let timeRangesObj;return timeRangesObj=void 0===ranges||0===ranges.length?{length:0,start(){throw new Error("This TimeRanges object is empty")},end(){throw new Error("This TimeRanges object is empty")}}:{length:ranges.length,start:getRange.bind(null,"start",0,ranges),end:getRange.bind(null,"end",1,ranges)},window.Symbol&&window.Symbol.iterator&&(timeRangesObj[window.Symbol.iterator]=()=>(ranges||[]).values()),timeRangesObj}function createTimeRanges$1(start,end){return Array.isArray(start)?createTimeRangesObj(start):void 0===start||void 0===end?createTimeRangesObj():createTimeRangesObj([[start,end]])}Component$1.registerComponent("Component",Component$1);const defaultImplementation=function(seconds,guide){seconds=seconds<0?0:seconds;let s=Math.floor(seconds%60),m=Math.floor(seconds/60%60),h=Math.floor(seconds/3600);const gm=Math.floor(guide/60%60),gh=Math.floor(guide/3600);return(isNaN(seconds)||seconds===1/0)&&(h=m=s="-"),h=h>0||gh>0?h+":":"",m=((h||gm>=10)&&m<10?"0"+m:m)+":",s=s<10?"0"+s:s,h+m+s};let implementation=defaultImplementation;function setFormatTime(customImplementation){implementation=customImplementation}function resetFormatTime(){implementation=defaultImplementation}function formatTime(seconds){let guide=arguments.length>1&&void 0!==arguments[1]?arguments[1]:seconds;return implementation(seconds,guide)}var Time=Object.freeze({__proto__:null,createTimeRanges:createTimeRanges$1,createTimeRange:createTimeRanges$1,setFormatTime:setFormatTime,resetFormatTime:resetFormatTime,formatTime:formatTime});function bufferedPercent(buffered,duration){let start,end,bufferedDuration=0;if(!duration)return 0;buffered&&buffered.length||(buffered=createTimeRanges$1(0,0));for(let i=0;i<buffered.length;i++)start=buffered.start(i),end=buffered.end(i),end>duration&&(end=duration),bufferedDuration+=end-start;return bufferedDuration/duration}function MediaError(value){if(value instanceof MediaError)return value;"number"==typeof value?this.code=value:"string"==typeof value?this.message=value:isObject$1(value)&&("number"==typeof value.code&&(this.code=value.code),Object.assign(this,value)),this.message||(this.message=MediaError.defaultMessages[this.code]||"")}MediaError.prototype.code=0,MediaError.prototype.message="",MediaError.prototype.status=null,MediaError.errorTypes=["MEDIA_ERR_CUSTOM","MEDIA_ERR_ABORTED","MEDIA_ERR_NETWORK","MEDIA_ERR_DECODE","MEDIA_ERR_SRC_NOT_SUPPORTED","MEDIA_ERR_ENCRYPTED"],MediaError.defaultMessages={1:"You aborted the media playback",2:"A network error caused the media download to fail part-way.",3:"The media playback was aborted due to a corruption problem or because the media used features your browser did not support.",4:"The media could not be loaded, either because the server or network failed or because the format is not supported.",5:"The media is encrypted and we do not have the keys to decrypt it."};for(let errNum=0;errNum<MediaError.errorTypes.length;errNum++)MediaError[MediaError.errorTypes[errNum]]=errNum,MediaError.prototype[MediaError.errorTypes[errNum]]=errNum;var tuple=function(obj,reviver){var json,error=null;try{json=JSON.parse(obj,reviver)}catch(err){error=err}return[error,json]};function isPromise(value){return null!=value&&"function"==typeof value.then}function silencePromise(value){isPromise(value)&&value.then(null,(e=>{}))}const trackToJson_=function(track){return["kind","label","language","id","inBandMetadataTrackDispatchType","mode","src"].reduce(((acc,prop,i)=>(track[prop]&&(acc[prop]=track[prop]),acc)),{cues:track.cues&&Array.prototype.map.call(track.cues,(function(cue){return{startTime:cue.startTime,endTime:cue.endTime,text:cue.text,id:cue.id}}))})};var textTrackConverter_textTracksToJson=function(tech){const trackEls=tech.$$("track"),trackObjs=Array.prototype.map.call(trackEls,(t=>t.track));return Array.prototype.map.call(trackEls,(function(trackEl){const json=trackToJson_(trackEl.track);return trackEl.src&&(json.src=trackEl.src),json})).concat(Array.prototype.filter.call(tech.textTracks(),(function(track){return-1===trackObjs.indexOf(track)})).map(trackToJson_))},textTrackConverter_jsonToTextTracks=function(json,tech){return json.forEach((function(track){const addedTrack=tech.addRemoteTextTrack(track).track;!track.src&&track.cues&&track.cues.forEach((cue=>addedTrack.addCue(cue)))})),tech.textTracks()};class ModalDialog extends Component$1{constructor(player,options){super(player,options),this.handleKeyDown_=e=>this.handleKeyDown(e),this.close_=e=>this.close(e),this.opened_=this.hasBeenOpened_=this.hasBeenFilled_=!1,this.closeable(!this.options_.uncloseable),this.content(this.options_.content),this.contentEl_=createEl("div",{className:"".concat("vjs-modal-dialog","-content")},{role:"document"}),this.descEl_=createEl("p",{className:"".concat("vjs-modal-dialog","-description vjs-control-text"),id:this.el().getAttribute("aria-describedby")}),textContent(this.descEl_,this.description()),this.el_.appendChild(this.descEl_),this.el_.appendChild(this.contentEl_)}createEl(){return super.createEl("div",{className:this.buildCSSClass(),tabIndex:-1},{"aria-describedby":"".concat(this.id(),"_description"),"aria-hidden":"true","aria-label":this.label(),role:"dialog"})}dispose(){this.contentEl_=null,this.descEl_=null,this.previouslyActiveEl_=null,super.dispose()}buildCSSClass(){return"".concat("vjs-modal-dialog"," vjs-hidden ").concat(super.buildCSSClass())}label(){return this.localize(this.options_.label||"Modal Window")}description(){let desc=this.options_.description||this.localize("This is a modal window.");return this.closeable()&&(desc+=" "+this.localize("This modal can be closed by pressing the Escape key or activating the close button.")),desc}open(){if(!this.opened_){const player=this.player();this.trigger("beforemodalopen"),this.opened_=!0,(this.options_.fillAlways||!this.hasBeenOpened_&&!this.hasBeenFilled_)&&this.fill(),this.wasPlaying_=!player.paused(),this.options_.pauseOnOpen&&this.wasPlaying_&&player.pause(),this.on("keydown",this.handleKeyDown_),this.hadControls_=player.controls(),player.controls(!1),this.show(),this.conditionalFocus_(),this.el().setAttribute("aria-hidden","false"),this.trigger("modalopen"),this.hasBeenOpened_=!0}}opened(value){return"boolean"==typeof value&&this[value?"open":"close"](),this.opened_}close(){if(!this.opened_)return;const player=this.player();this.trigger("beforemodalclose"),this.opened_=!1,this.wasPlaying_&&this.options_.pauseOnOpen&&player.play(),this.off("keydown",this.handleKeyDown_),this.hadControls_&&player.controls(!0),this.hide(),this.el().setAttribute("aria-hidden","true"),this.trigger("modalclose"),this.conditionalBlur_(),this.options_.temporary&&this.dispose()}closeable(value){if("boolean"==typeof value){const closeable=this.closeable_=!!value;let close=this.getChild("closeButton");if(closeable&&!close){const temp=this.contentEl_;this.contentEl_=this.el_,close=this.addChild("closeButton",{controlText:"Close Modal Dialog"}),this.contentEl_=temp,this.on(close,"close",this.close_)}!closeable&&close&&(this.off(close,"close",this.close_),this.removeChild(close),close.dispose())}return this.closeable_}fill(){this.fillWith(this.content())}fillWith(content){const contentEl=this.contentEl(),parentEl=contentEl.parentNode,nextSiblingEl=contentEl.nextSibling;this.trigger("beforemodalfill"),this.hasBeenFilled_=!0,parentEl.removeChild(contentEl),this.empty(),insertContent(contentEl,content),this.trigger("modalfill"),nextSiblingEl?parentEl.insertBefore(contentEl,nextSiblingEl):parentEl.appendChild(contentEl);const closeButton=this.getChild("closeButton");closeButton&&parentEl.appendChild(closeButton.el_)}empty(){this.trigger("beforemodalempty"),emptyEl(this.contentEl()),this.trigger("modalempty")}content(value){return void 0!==value&&(this.content_=value),this.content_}conditionalFocus_(){const activeEl=document.activeElement,playerEl=this.player_.el_;this.previouslyActiveEl_=null,(playerEl.contains(activeEl)||playerEl===activeEl)&&(this.previouslyActiveEl_=activeEl,this.focus())}conditionalBlur_(){this.previouslyActiveEl_&&(this.previouslyActiveEl_.focus(),this.previouslyActiveEl_=null)}handleKeyDown(event){if(event.stopPropagation(),keycode.isEventKey(event,"Escape")&&this.closeable())return event.preventDefault(),void this.close();if(!keycode.isEventKey(event,"Tab"))return;const focusableEls=this.focusableEls_(),activeEl=this.el_.querySelector(":focus");let focusIndex;for(let i=0;i<focusableEls.length;i++)if(activeEl===focusableEls[i]){focusIndex=i;break}document.activeElement===this.el_&&(focusIndex=0),event.shiftKey&&0===focusIndex?(focusableEls[focusableEls.length-1].focus(),event.preventDefault()):event.shiftKey||focusIndex!==focusableEls.length-1||(focusableEls[0].focus(),event.preventDefault())}focusableEls_(){const allChildren=this.el_.querySelectorAll("*");return Array.prototype.filter.call(allChildren,(child=>(child instanceof window.HTMLAnchorElement||child instanceof window.HTMLAreaElement)&&child.hasAttribute("href")||(child instanceof window.HTMLInputElement||child instanceof window.HTMLSelectElement||child instanceof window.HTMLTextAreaElement||child instanceof window.HTMLButtonElement)&&!child.hasAttribute("disabled")||child instanceof window.HTMLIFrameElement||child instanceof window.HTMLObjectElement||child instanceof window.HTMLEmbedElement||child.hasAttribute("tabindex")&&-1!==child.getAttribute("tabindex")||child.hasAttribute("contenteditable")))}}ModalDialog.prototype.options_={pauseOnOpen:!0,temporary:!0},Component$1.registerComponent("ModalDialog",ModalDialog);class TrackList extends EventTarget$2{constructor(){let tracks=arguments.length>0&&void 0!==arguments[0]?arguments[0]:[];super(),this.tracks_=[],Object.defineProperty(this,"length",{get(){return this.tracks_.length}});for(let i=0;i<tracks.length;i++)this.addTrack(tracks[i])}addTrack(track){const index=this.tracks_.length;""+index in this||Object.defineProperty(this,index,{get(){return this.tracks_[index]}}),-1===this.tracks_.indexOf(track)&&(this.tracks_.push(track),this.trigger({track:track,type:"addtrack",target:this})),track.labelchange_=()=>{this.trigger({track:track,type:"labelchange",target:this})},isEvented(track)&&track.addEventListener("labelchange",track.labelchange_)}removeTrack(rtrack){let track;for(let i=0,l=this.length;i<l;i++)if(this[i]===rtrack){track=this[i],track.off&&track.off(),this.tracks_.splice(i,1);break}track&&this.trigger({track:track,type:"removetrack",target:this})}getTrackById(id){let result=null;for(let i=0,l=this.length;i<l;i++){const track=this[i];if(track.id===id){result=track;break}}return result}}TrackList.prototype.allowedEvents_={change:"change",addtrack:"addtrack",removetrack:"removetrack",labelchange:"labelchange"};for(const event in TrackList.prototype.allowedEvents_)TrackList.prototype["on"+event]=null;const disableOthers$1=function(list,track){for(let i=0;i<list.length;i++)Object.keys(list[i]).length&&track.id!==list[i].id&&(list[i].enabled=!1)};const disableOthers=function(list,track){for(let i=0;i<list.length;i++)Object.keys(list[i]).length&&track.id!==list[i].id&&(list[i].selected=!1)};class TextTrackList extends TrackList{addTrack(track){super.addTrack(track),this.queueChange_||(this.queueChange_=()=>this.queueTrigger("change")),this.triggerSelectedlanguagechange||(this.triggerSelectedlanguagechange_=()=>this.trigger("selectedlanguagechange")),track.addEventListener("modechange",this.queueChange_);-1===["metadata","chapters"].indexOf(track.kind)&&track.addEventListener("modechange",this.triggerSelectedlanguagechange_)}removeTrack(rtrack){super.removeTrack(rtrack),rtrack.removeEventListener&&(this.queueChange_&&rtrack.removeEventListener("modechange",this.queueChange_),this.selectedlanguagechange_&&rtrack.removeEventListener("modechange",this.triggerSelectedlanguagechange_))}}class TextTrackCueList{constructor(cues){TextTrackCueList.prototype.setCues_.call(this,cues),Object.defineProperty(this,"length",{get(){return this.length_}})}setCues_(cues){const oldLength=this.length||0;let i=0;const l=cues.length;this.cues_=cues,this.length_=cues.length;const defineProp=function(index){""+index in this||Object.defineProperty(this,""+index,{get(){return this.cues_[index]}})};if(oldLength<l)for(i=oldLength;i<l;i++)defineProp.call(this,i)}getCueById(id){let result=null;for(let i=0,l=this.length;i<l;i++){const cue=this[i];if(cue.id===id){result=cue;break}}return result}}const VideoTrackKind={alternative:"alternative",captions:"captions",main:"main",sign:"sign",subtitles:"subtitles",commentary:"commentary"},AudioTrackKind={alternative:"alternative",descriptions:"descriptions",main:"main","main-desc":"main-desc",translation:"translation",commentary:"commentary"},TextTrackKind={subtitles:"subtitles",captions:"captions",descriptions:"descriptions",chapters:"chapters",metadata:"metadata"},TextTrackMode={disabled:"disabled",hidden:"hidden",showing:"showing"};class Track extends EventTarget$2{constructor(){let options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};super();const trackProps={id:options.id||"vjs_track_"+newGUID(),kind:options.kind||"",language:options.language||""};let label=options.label||"";for(const key in trackProps)Object.defineProperty(this,key,{get:()=>trackProps[key],set(){}});Object.defineProperty(this,"label",{get:()=>label,set(newLabel){newLabel!==label&&(label=newLabel,this.trigger("labelchange"))}})}}const parseUrl=function(url){const props=["protocol","hostname","port","pathname","search","hash","host"],a=document.createElement("a");a.href=url;const details={};for(let i=0;i<props.length;i++)details[props[i]]=a[props[i]];return"http:"===details.protocol&&(details.host=details.host.replace(/:80$/,"")),"https:"===details.protocol&&(details.host=details.host.replace(/:443$/,"")),details.protocol||(details.protocol=window.location.protocol),details.host||(details.host=window.location.host),details},getAbsoluteURL=function(url){if(!url.match(/^https?:\/\//)){const a=document.createElement("a");a.href=url,url=a.href}return url},getFileExtension=function(path){if("string"==typeof path){const pathParts=/^(\/?)([\s\S]*?)((?:\.{1,2}|[^\/]+?)(\.([^\.\/\?]+)))(?:[\/]*|[\?].*)$/.exec(path);if(pathParts)return pathParts.pop().toLowerCase()}return""},isCrossOrigin=function(url){let winLoc=arguments.length>1&&void 0!==arguments[1]?arguments[1]:window.location;const urlInfo=parseUrl(url),srcProtocol=":"===urlInfo.protocol?winLoc.protocol:urlInfo.protocol,crossOrigin=srcProtocol+urlInfo.host!==winLoc.protocol+winLoc.host;return crossOrigin};var x,Url=Object.freeze({__proto__:null,parseUrl:parseUrl,getAbsoluteURL:getAbsoluteURL,getFileExtension:getFileExtension,isCrossOrigin:isCrossOrigin}),window_1="undefined"!=typeof window?window:void 0!==commonjsGlobal?commonjsGlobal:"undefined"!=typeof self?self:{},_extends_1=createCommonjsModule((function(module){function _extends(){return module.exports=_extends=Object.assign?Object.assign.bind():function(target){for(var i=1;i<arguments.length;i++){var 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+!function(global,factory){"object"==typeof exports&&"undefined"!=typeof module?module.exports=factory():"function"==typeof define&&define.amd?define("media_videojs/video-lazy",factory):(global="undefined"!=typeof globalThis?globalThis:global||self).videojs=factory()}(window,(function(){const hooks_={},hooks=function(type,fn){return hooks_[type]=hooks_[type]||[],fn&&(hooks_[type]=hooks_[type].concat(fn)),hooks_[type]},removeHook=function(type,fn){const index=hooks(type).indexOf(fn);return!(index<=-1)&&(hooks_[type]=hooks_[type].slice(),hooks_[type].splice(index,1),!0)},FullscreenApi={prefixed:!0},apiMap=[["requestFullscreen","exitFullscreen","fullscreenElement","fullscreenEnabled","fullscreenchange","fullscreenerror","fullscreen"],["webkitRequestFullscreen","webkitExitFullscreen","webkitFullscreenElement","webkitFullscreenEnabled","webkitfullscreenchange","webkitfullscreenerror","-webkit-full-screen"]],specApi=apiMap[0];let browserApi;for(let i=0;i<apiMap.length;i++)if(apiMap[i][1]in 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level},log.history=()=>history?[].concat(history):[],log.history.filter=fname=>(history||[]).filter((historyItem=>new RegExp(".*".concat(fname,".*")).test(historyItem[0]))),log.history.clear=()=>{history&&(history.length=0)},log.history.disable=()=>{null!==history&&(history.length=0,history=null)},log.history.enable=()=>{null===history&&(history=[])},log.error=function(){for(var _len3=arguments.length,args=new Array(_len3),_key3=0;_key3<_len3;_key3++)args[_key3]=arguments[_key3];return logByType("error",level,args)},log.warn=function(){for(var _len4=arguments.length,args=new Array(_len4),_key4=0;_key4<_len4;_key4++)args[_key4]=arguments[_key4];return logByType("warn",level,args)},log.debug=function(){for(var _len5=arguments.length,args=new Array(_len5),_key5=0;_key5<_len5;_key5++)args[_key5]=arguments[_key5];return logByType("debug",level,args)},log}("VIDEOJS"),createLogger=log$1.createLogger,toString$1=Object.prototype.toString,keys=function(object){return isObject$1(object)?Object.keys(object):[]};function each(object,fn){keys(object).forEach((key=>fn(object[key],key)))}function reduce(object,fn){let initial=arguments.length>2&&void 0!==arguments[2]?arguments[2]:0;return keys(object).reduce(((accum,key)=>fn(accum,object[key],key)),initial)}function isObject$1(value){return!!value&&"object"==typeof value}function isPlain(value){return isObject$1(value)&&"[object Object]"===toString$1.call(value)&&value.constructor===Object}function merge$2(){const result={};for(var _len6=arguments.length,sources=new Array(_len6),_key6=0;_key6<_len6;_key6++)sources[_key6]=arguments[_key6];return sources.forEach((source=>{source&&each(source,((value,key)=>{isPlain(value)?(isPlain(result[key])||(result[key]={}),result[key]=merge$2(result[key],value)):result[key]=value}))})),result}function values$1(){let source=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};const result=[];for(const key in source)if(source.hasOwnProperty(key)){const value=source[key];result.push(value)}return result}function defineLazyProperty(obj,key,getValue){let setter=!(arguments.length>3&&void 0!==arguments[3])||arguments[3];const set=value=>Object.defineProperty(obj,key,{value:value,enumerable:!0,writable:!0}),options={configurable:!0,enumerable:!0,get(){const value=getValue();return set(value),value}};return setter&&(options.set=set),Object.defineProperty(obj,key,options)}var Obj=Object.freeze({__proto__:null,each:each,reduce:reduce,isObject:isObject$1,isPlain:isPlain,merge:merge$2,values:values$1,defineLazyProperty:defineLazyProperty});let ANDROID_VERSION,IS_IPOD=!1,IOS_VERSION=null,IS_ANDROID=!1,IS_FIREFOX=!1,IS_EDGE=!1,IS_CHROMIUM=!1,IS_CHROME=!1,CHROMIUM_VERSION=null,CHROME_VERSION=null,IE_VERSION=null,IS_SAFARI=!1,IS_WINDOWS=!1,IS_IPAD=!1,IS_IPHONE=!1;const TOUCH_ENABLED=Boolean(isReal()&&("ontouchstart"in window||window.navigator.maxTouchPoints||window.DocumentTouch&&window.document instanceof window.DocumentTouch)),UAD=window.navigator&&window.navigator.userAgentData;if(UAD&&UAD.platform&&UAD.brands&&(IS_ANDROID="Android"===UAD.platform,IS_EDGE=Boolean(UAD.brands.find((b=>"Microsoft Edge"===b.brand))),IS_CHROMIUM=Boolean(UAD.brands.find((b=>"Chromium"===b.brand))),IS_CHROME=!IS_EDGE&&IS_CHROMIUM,CHROMIUM_VERSION=CHROME_VERSION=(UAD.brands.find((b=>"Chromium"===b.brand))||{}).version||null,IS_WINDOWS="Windows"===UAD.platform),!IS_CHROMIUM){const USER_AGENT=window.navigator&&window.navigator.userAgent||"";IS_IPOD=/iPod/i.test(USER_AGENT),IOS_VERSION=function(){const match=USER_AGENT.match(/OS (\d+)_/i);return match&&match[1]?match[1]:null}(),IS_ANDROID=/Android/i.test(USER_AGENT),ANDROID_VERSION=function(){const match=USER_AGENT.match(/Android (\d+)(?:\.(\d+))?(?:\.(\d+))*/i);if(!match)return null;const major=match[1]&&parseFloat(match[1]),minor=match[2]&&parseFloat(match[2]);return 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link=document.createElement("link");link.rel="stylesheet",link.type=styleSheet.type,link.media=styleSheet.media.mediaText,link.href=styleSheet.href,win.document.head.appendChild(link)}}))}var Dom=Object.freeze({__proto__:null,isReal:isReal,isEl:isEl,isInFrame:isInFrame,createEl:createEl,textContent:textContent,prependTo:prependTo,hasClass:hasClass,addClass:addClass,removeClass:removeClass,toggleClass:toggleClass,setAttributes:setAttributes,getAttributes:getAttributes,getAttribute:getAttribute,setAttribute:setAttribute,removeAttribute:removeAttribute,blockTextSelection:blockTextSelection,unblockTextSelection:unblockTextSelection,getBoundingClientRect:getBoundingClientRect,findPosition:findPosition,getPointerPosition:getPointerPosition,isTextNode:isTextNode$1,emptyEl:emptyEl,normalizeContent:normalizeContent,appendContent:appendContent,insertContent:insertContent,isSingleLeftClick:isSingleLeftClick,$:$,$$:$$,computedStyle:computedStyle,copyStyleSheetsToWindow:copyStyleSheetsToWindow});let videojs$1,_windowLoaded=!1;const autoSetup=function(){if(!1===videojs$1.options.autoSetup)return;const 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style.className=className,style},setTextContent=function(el,content){el.styleSheet?el.styleSheet.cssText=content:el.textContent=content};var DomData=new WeakMap;let _supportsPassive,_guid=3;function newGUID(){return _guid++}function _cleanUpEvents(elem,type){if(!DomData.has(elem))return;const data=DomData.get(elem);0===data.handlers[type].length&&(delete data.handlers[type],elem.removeEventListener?elem.removeEventListener(type,data.dispatcher,!1):elem.detachEvent&&elem.detachEvent("on"+type,data.dispatcher)),Object.getOwnPropertyNames(data.handlers).length<=0&&(delete data.handlers,delete data.dispatcher,delete data.disabled),0===Object.getOwnPropertyNames(data).length&&DomData.delete(elem)}function _handleMultipleEvents(fn,elem,types,callback){types.forEach((function(type){fn(elem,type,callback)}))}function fixEvent(event){if(event.fixed_)return event;function returnTrue(){return!0}function returnFalse(){return!1}if(!event||!event.isPropagationStopped||!event.isImmediatePropagationStopped){const old=event||window.event;event={};for(const key in old)"layerX"!==key&&"layerY"!==key&&"keyLocation"!==key&&"webkitMovementX"!==key&&"webkitMovementY"!==key&&"path"!==key&&("returnValue"===key&&old.preventDefault||(event[key]=old[key]));if(event.target||(event.target=event.srcElement||document),event.relatedTarget||(event.relatedTarget=event.fromElement===event.target?event.toElement:event.fromElement),event.preventDefault=function(){old.preventDefault&&old.preventDefault(),event.returnValue=!1,old.returnValue=!1,event.defaultPrevented=!0},event.defaultPrevented=!1,event.stopPropagation=function(){old.stopPropagation&&old.stopPropagation(),event.cancelBubble=!0,old.cancelBubble=!0,event.isPropagationStopped=returnTrue},event.isPropagationStopped=returnFalse,event.stopImmediatePropagation=function(){old.stopImmediatePropagation&&old.stopImmediatePropagation(),event.isImmediatePropagationStopped=returnTrue,event.stopPropagation()},event.isImmediatePropagationStopped=returnFalse,null!==event.clientX&&void 0!==event.clientX){const doc=document.documentElement,body=document.body;event.pageX=event.clientX+(doc&&doc.scrollLeft||body&&body.scrollLeft||0)-(doc&&doc.clientLeft||body&&body.clientLeft||0),event.pageY=event.clientY+(doc&&doc.scrollTop||body&&body.scrollTop||0)-(doc&&doc.clientTop||body&&body.clientTop||0)}event.which=event.charCode||event.keyCode,null!==event.button&&void 0!==event.button&&(event.button=1&event.button?0:4&event.button?1:2&event.button?2:0)}return event.fixed_=!0,event}const passiveEvents=["touchstart","touchmove"];function on(elem,type,fn){if(Array.isArray(type))return _handleMultipleEvents(on,elem,type,fn);DomData.has(elem)||DomData.set(elem,{});const data=DomData.get(elem);if(data.handlers||(data.handlers={}),data.handlers[type]||(data.handlers[type]=[]),fn.guid||(fn.guid=newGUID()),data.handlers[type].push(fn),data.dispatcher||(data.disabled=!1,data.dispatcher=function(event,hash){if(data.disabled)return;event=fixEvent(event);const handlers=data.handlers[event.type];if(handlers){const handlersCopy=handlers.slice(0);for(let m=0,n=handlersCopy.length;m<n&&!event.isImmediatePropagationStopped();m++)try{handlersCopy[m].call(elem,event,hash)}catch(e){log$1.error(e)}}}),1===data.handlers[type].length)if(elem.addEventListener){let options=!1;(function(){if("boolean"!=typeof _supportsPassive){_supportsPassive=!1;try{const opts=Object.defineProperty({},"passive",{get(){_supportsPassive=!0}});window.addEventListener("test",null,opts),window.removeEventListener("test",null,opts)}catch(e){}}return _supportsPassive})()&&passiveEvents.indexOf(type)>-1&&(options={passive:!0}),elem.addEventListener(type,data.dispatcher,options)}else elem.attachEvent&&elem.attachEvent("on"+type,data.dispatcher)}function off(elem,type,fn){if(!DomData.has(elem))return;const data=DomData.get(elem);if(!data.handlers)return;if(Array.isArray(type))return _handleMultipleEvents(off,elem,type,fn);const removeType=function(el,t){data.handlers[t]=[],_cleanUpEvents(el,t)};if(void 0===type){for(const t in data.handlers)Object.prototype.hasOwnProperty.call(data.handlers||{},t)&&removeType(elem,t);return}const handlers=data.handlers[type];if(handlers)if(fn){if(fn.guid)for(let n=0;n<handlers.length;n++)handlers[n].guid===fn.guid&&handlers.splice(n--,1);_cleanUpEvents(elem,type)}else removeType(elem,type)}function trigger(elem,event,hash){const elemData=DomData.has(elem)?DomData.get(elem):{},parent=elem.parentNode||elem.ownerDocument;if("string"==typeof event?event={type:event,target:elem}:event.target||(event.target=elem),event=fixEvent(event),elemData.dispatcher&&elemData.dispatcher.call(elem,event,hash),parent&&!event.isPropagationStopped()&&!0===event.bubbles)trigger.call(null,parent,event,hash);else if(!parent&&!event.defaultPrevented&&event.target&&event.target[event.type]){DomData.has(event.target)||DomData.set(event.target,{});const targetData=DomData.get(event.target);event.target[event.type]&&(targetData.disabled=!0,"function"==typeof event.target[event.type]&&event.target[event.type](),targetData.disabled=!1)}return!event.defaultPrevented}function one(elem,type,fn){if(Array.isArray(type))return _handleMultipleEvents(one,elem,type,fn);const func=function(){off(elem,type,func),fn.apply(this,arguments)};func.guid=fn.guid=fn.guid||newGUID(),on(elem,type,func)}function any(elem,type,fn){const func=function(){off(elem,type,func),fn.apply(this,arguments)};func.guid=fn.guid=fn.guid||newGUID(),on(elem,type,func)}var Events=Object.freeze({__proto__:null,fixEvent:fixEvent,on:on,off:off,trigger:trigger,one:one,any:any});const bind_=function(context,fn,uid){fn.guid||(fn.guid=newGUID());const bound=fn.bind(context);return bound.guid=uid?uid+"_"+fn.guid:fn.guid,bound},throttle=function(fn,wait){let last=window.performance.now();return function(){const now=window.performance.now();now-last>=wait&&(fn(...arguments),last=now)}},debounce=function(func,wait,immediate){let timeout,context=arguments.length>3&&void 0!==arguments[3]?arguments[3]:window;const cancel=()=>{context.clearTimeout(timeout),timeout=null},debounced=function(){const self=this,args=arguments;let later=function(){timeout=null,later=null,immediate||func.apply(self,args)};!timeout&&immediate&&func.apply(self,args),context.clearTimeout(timeout),timeout=context.setTimeout(later,wait)};return debounced.cancel=cancel,debounced};var Fn=Object.freeze({__proto__:null,UPDATE_REFRESH_INTERVAL:30,bind_:bind_,throttle:throttle,debounce:debounce});let EVENT_MAP;class EventTarget$2{on(type,fn){const ael=this.addEventListener;this.addEventListener=()=>{},on(this,type,fn),this.addEventListener=ael}off(type,fn){off(this,type,fn)}one(type,fn){const ael=this.addEventListener;this.addEventListener=()=>{},one(this,type,fn),this.addEventListener=ael}any(type,fn){const ael=this.addEventListener;this.addEventListener=()=>{},any(this,type,fn),this.addEventListener=ael}trigger(event){const type=event.type||event;"string"==typeof event&&(event={type:type}),event=fixEvent(event),this.allowedEvents_[type]&&this["on"+type]&&this["on"+type](event),trigger(this,event)}queueTrigger(event){EVENT_MAP||(EVENT_MAP=new Map);const type=event.type||event;let map=EVENT_MAP.get(this);map||(map=new Map,EVENT_MAP.set(this,map));const oldTimeout=map.get(type);map.delete(type),window.clearTimeout(oldTimeout);const timeout=window.setTimeout((()=>{map.delete(type),0===map.size&&(map=null,EVENT_MAP.delete(this)),this.trigger(event)}),0);map.set(type,timeout)}}EventTarget$2.prototype.allowedEvents_={},EventTarget$2.prototype.addEventListener=EventTarget$2.prototype.on,EventTarget$2.prototype.removeEventListener=EventTarget$2.prototype.off,EventTarget$2.prototype.dispatchEvent=EventTarget$2.prototype.trigger;const objName=obj=>"function"==typeof obj.name?obj.name():"string"==typeof obj.name?obj.name:obj.name_?obj.name_:obj.constructor&&obj.constructor.name?obj.constructor.name:typeof obj,isEvented=object=>object instanceof EventTarget$2||!!object.eventBusEl_&&["on","one","off","trigger"].every((k=>"function"==typeof object[k])),isValidEventType=type=>"string"==typeof type&&/\S/.test(type)||Array.isArray(type)&&!!type.length,validateTarget=(target,obj,fnName)=>{if(!target||!target.nodeName&&!isEvented(target))throw new Error("Invalid target for ".concat(objName(obj),"#").concat(fnName,"; must be a DOM node or evented object."))},validateEventType=(type,obj,fnName)=>{if(!isValidEventType(type))throw new Error("Invalid event type for ".concat(objName(obj),"#").concat(fnName,"; must be a non-empty string or array."))},validateListener=(listener,obj,fnName)=>{if("function"!=typeof listener)throw new Error("Invalid listener for ".concat(objName(obj),"#").concat(fnName,"; must be a function."))},normalizeListenArgs=(self,args,fnName)=>{const isTargetingSelf=args.length<3||args[0]===self||args[0]===self.eventBusEl_;let target,type,listener;return isTargetingSelf?(target=self.eventBusEl_,args.length>=3&&args.shift(),[type,listener]=args):[target,type,listener]=args,validateTarget(target,self,fnName),validateEventType(type,self,fnName),validateListener(listener,self,fnName),listener=bind_(self,listener),{isTargetingSelf:isTargetingSelf,target:target,type:type,listener:listener}},listen=(target,method,type,listener)=>{validateTarget(target,target,method),target.nodeName?Events[method](target,type,listener):target[method](type,listener)},EventedMixin={on(){for(var _len9=arguments.length,args=new Array(_len9),_key9=0;_key9<_len9;_key9++)args[_key9]=arguments[_key9];const{isTargetingSelf:isTargetingSelf,target:target,type:type,listener:listener}=normalizeListenArgs(this,args,"on");if(listen(target,"on",type,listener),!isTargetingSelf){const removeListenerOnDispose=()=>this.off(target,type,listener);removeListenerOnDispose.guid=listener.guid;const removeRemoverOnTargetDispose=()=>this.off("dispose",removeListenerOnDispose);removeRemoverOnTargetDispose.guid=listener.guid,listen(this,"on","dispose",removeListenerOnDispose),listen(target,"on","dispose",removeRemoverOnTargetDispose)}},one(){for(var _this=this,_len10=arguments.length,args=new Array(_len10),_key10=0;_key10<_len10;_key10++)args[_key10]=arguments[_key10];const{isTargetingSelf:isTargetingSelf,target:target,type:type,listener:listener}=normalizeListenArgs(this,args,"one");if(isTargetingSelf)listen(target,"one",type,listener);else{const wrapper=function(){_this.off(target,type,wrapper);for(var _len11=arguments.length,largs=new Array(_len11),_key11=0;_key11<_len11;_key11++)largs[_key11]=arguments[_key11];listener.apply(null,largs)};wrapper.guid=listener.guid,listen(target,"one",type,wrapper)}},any(){for(var _this2=this,_len12=arguments.length,args=new Array(_len12),_key12=0;_key12<_len12;_key12++)args[_key12]=arguments[_key12];const{isTargetingSelf:isTargetingSelf,target:target,type:type,listener:listener}=normalizeListenArgs(this,args,"any");if(isTargetingSelf)listen(target,"any",type,listener);else{const wrapper=function(){_this2.off(target,type,wrapper);for(var _len13=arguments.length,largs=new Array(_len13),_key13=0;_key13<_len13;_key13++)largs[_key13]=arguments[_key13];listener.apply(null,largs)};wrapper.guid=listener.guid,listen(target,"any",type,wrapper)}},off(targetOrType,typeOrListener,listener){if(!targetOrType||isValidEventType(targetOrType))off(this.eventBusEl_,targetOrType,typeOrListener);else{const target=targetOrType,type=typeOrListener;validateTarget(target,this,"off"),validateEventType(type,this,"off"),validateListener(listener,this,"off"),listener=bind_(this,listener),this.off("dispose",listener),target.nodeName?(off(target,type,listener),off(target,"dispose",listener)):isEvented(target)&&(target.off(type,listener),target.off("dispose",listener))}},trigger(event,hash){validateTarget(this.eventBusEl_,this,"trigger");const type=event&&"string"!=typeof event?event.type:event;if(!isValidEventType(type))throw new Error("Invalid event type for ".concat(objName(this),"#trigger; ")+"must be a non-empty string or object with a type key that has a non-empty value.");return trigger(this.eventBusEl_,event,hash)}};function evented(target){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};const{eventBusKey:eventBusKey}=options;if(eventBusKey){if(!target[eventBusKey].nodeName)throw new Error('The eventBusKey "'.concat(eventBusKey,'" does not refer to an element.'));target.eventBusEl_=target[eventBusKey]}else target.eventBusEl_=createEl("span",{className:"vjs-event-bus"});return Object.assign(target,EventedMixin),target.eventedCallbacks&&target.eventedCallbacks.forEach((callback=>{callback()})),target.on("dispose",(()=>{target.off(),[target,target.el_,target.eventBusEl_].forEach((function(val){val&&DomData.has(val)&&DomData.delete(val)})),window.setTimeout((()=>{target.eventBusEl_=null}),0)})),target}const StatefulMixin={state:{},setState(stateUpdates){let changes;return"function"==typeof stateUpdates&&(stateUpdates=stateUpdates()),each(stateUpdates,((value,key)=>{this.state[key]!==value&&(changes=changes||{},changes[key]={from:this.state[key],to:value}),this.state[key]=value})),changes&&isEvented(this)&&this.trigger({changes:changes,type:"statechanged"}),changes}};function stateful(target,defaultState){return Object.assign(target,StatefulMixin),target.state=Object.assign({},target.state,defaultState),"function"==typeof target.handleStateChanged&&isEvented(target)&&target.on("statechanged",target.handleStateChanged),target}const toLowerCase=function(string){return"string"!=typeof string?string:string.replace(/./,(w=>w.toLowerCase()))},toTitleCase$1=function(string){return"string"!=typeof string?string:string.replace(/./,(w=>w.toUpperCase()))},titleCaseEquals=function(str1,str2){return toTitleCase$1(str1)===toTitleCase$1(str2)};var Str=Object.freeze({__proto__:null,toLowerCase:toLowerCase,toTitleCase:toTitleCase$1,titleCaseEquals:titleCaseEquals}),commonjsGlobal="undefined"!=typeof globalThis?globalThis:"undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:{};function createCommonjsModule(fn,module){return fn(module={exports:{}},module.exports),module.exports}var keycode=createCommonjsModule((function(module,exports){function keyCode(searchInput){if(searchInput&&"object"==typeof searchInput){var hasKeyCode=searchInput.which||searchInput.keyCode||searchInput.charCode;hasKeyCode&&(searchInput=hasKeyCode)}if("number"==typeof searchInput)return names[searchInput];var foundNamedKey,search=String(searchInput);return(foundNamedKey=codes[search.toLowerCase()])?foundNamedKey:(foundNamedKey=aliases[search.toLowerCase()])||(1===search.length?search.charCodeAt(0):void 0)}keyCode.isEventKey=function(event,nameOrCode){if(event&&"object"==typeof event){var keyCode=event.which||event.keyCode||event.charCode;if(null==keyCode)return!1;if("string"==typeof nameOrCode){var foundNamedKey;if(foundNamedKey=codes[nameOrCode.toLowerCase()])return foundNamedKey===keyCode;if(foundNamedKey=aliases[nameOrCode.toLowerCase()])return foundNamedKey===keyCode}else if("number"==typeof nameOrCode)return nameOrCode===keyCode;return!1}};var codes=(exports=module.exports=keyCode).code=exports.codes={backspace:8,tab:9,enter:13,shift:16,ctrl:17,alt:18,"pause/break":19,"caps lock":20,esc:27,space:32,"page up":33,"page down":34,end:35,home:36,left:37,up:38,right:39,down:40,insert:45,delete:46,command:91,"left command":91,"right command":93,"numpad *":106,"numpad +":107,"numpad -":109,"numpad .":110,"numpad /":111,"num lock":144,"scroll lock":145,"my computer":182,"my calculator":183,";":186,"=":187,",":188,"-":189,".":190,"/":191,"`":192,"[":219,"\\":220,"]":221,"'":222},aliases=exports.aliases={windows:91,"⇧":16,"⌥":18,"⌃":17,"⌘":91,ctl:17,control:17,option:18,pause:19,break:19,caps:20,return:13,escape:27,spc:32,spacebar:32,pgup:33,pgdn:34,ins:45,del:46,cmd:91};for(i=97;i<123;i++)codes[String.fromCharCode(i)]=i-32;for(var i=48;i<58;i++)codes[i-48]=i;for(i=1;i<13;i++)codes["f"+i]=i+111;for(i=0;i<10;i++)codes["numpad "+i]=i+96;var names=exports.names=exports.title={};for(i in codes)names[codes[i]]=i;for(var alias in aliases)codes[alias]=aliases[alias]}));keycode.code,keycode.codes,keycode.aliases,keycode.names,keycode.title;class Component$1{constructor(player,options,ready){if(!player&&this.play?this.player_=player=this:this.player_=player,this.isDisposed_=!1,this.parentComponent_=null,this.options_=merge$2({},this.options_),options=this.options_=merge$2(this.options_,options),this.id_=options.id||options.el&&options.el.id,!this.id_){const id=player&&player.id&&player.id()||"no_player";this.id_="".concat(id,"_component_").concat(newGUID())}this.name_=options.name||null,options.el?this.el_=options.el:!1!==options.createEl&&(this.el_=this.createEl()),options.className&&this.el_&&options.className.split(" ").forEach((c=>this.addClass(c))),["on","off","one","any","trigger"].forEach((fn=>{this[fn]=void 0})),!1!==options.evented&&(evented(this,{eventBusKey:this.el_?"el_":null}),this.handleLanguagechange=this.handleLanguagechange.bind(this),this.on(this.player_,"languagechange",this.handleLanguagechange)),stateful(this,this.constructor.defaultState),this.children_=[],this.childIndex_={},this.childNameIndex_={},this.setTimeoutIds_=new Set,this.setIntervalIds_=new Set,this.rafIds_=new Set,this.namedRafs_=new Map,this.clearingTimersOnDispose_=!1,!1!==options.initChildren&&this.initChildren(),this.ready(ready),!1!==options.reportTouchActivity&&this.enableTouchActivity()}on(type,fn){}off(type,fn){}one(type,fn){}any(type,fn){}trigger(event,hash){}dispose(){let options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};if(!this.isDisposed_){if(this.readyQueue_&&(this.readyQueue_.length=0),this.trigger({type:"dispose",bubbles:!1}),this.isDisposed_=!0,this.children_)for(let i=this.children_.length-1;i>=0;i--)this.children_[i].dispose&&this.children_[i].dispose();this.children_=null,this.childIndex_=null,this.childNameIndex_=null,this.parentComponent_=null,this.el_&&(this.el_.parentNode&&(options.restoreEl?this.el_.parentNode.replaceChild(options.restoreEl,this.el_):this.el_.parentNode.removeChild(this.el_)),this.el_=null),this.player_=null}}isDisposed(){return Boolean(this.isDisposed_)}player(){return this.player_}options(obj){return obj?(this.options_=merge$2(this.options_,obj),this.options_):this.options_}el(){return this.el_}createEl(tagName,properties,attributes){return createEl(tagName,properties,attributes)}localize(string,tokens){let defaultValue=arguments.length>2&&void 0!==arguments[2]?arguments[2]:string;const code=this.player_.language&&this.player_.language(),languages=this.player_.languages&&this.player_.languages(),language=languages&&languages[code],primaryCode=code&&code.split("-")[0],primaryLang=languages&&languages[primaryCode];let localizedString=defaultValue;return language&&language[string]?localizedString=language[string]:primaryLang&&primaryLang[string]&&(localizedString=primaryLang[string]),tokens&&(localizedString=localizedString.replace(/\{(\d+)\}/g,(function(match,index){const value=tokens[index-1];let ret=value;return void 0===value&&(ret=match),ret}))),localizedString}handleLanguagechange(){}contentEl(){return this.contentEl_||this.el_}id(){return this.id_}name(){return this.name_}children(){return this.children_}getChildById(id){return this.childIndex_[id]}getChild(name){if(name)return this.childNameIndex_[name]}getDescendant(){for(var _len14=arguments.length,names=new Array(_len14),_key14=0;_key14<_len14;_key14++)names[_key14]=arguments[_key14];names=names.reduce(((acc,n)=>acc.concat(n)),[]);let currentChild=this;for(let i=0;i<names.length;i++)if(currentChild=currentChild.getChild(names[i]),!currentChild||!currentChild.getChild)return;return currentChild}setIcon(iconName){let el=arguments.length>1&&void 0!==arguments[1]?arguments[1]:this.el();if(!this.player_.options_.experimentalSvgIcons)return;const xmlnsURL="http://www.w3.org/2000/svg",iconContainer=createEl("span",{className:"vjs-icon-placeholder vjs-svg-icon"},{"aria-hidden":"true"}),svgEl=document.createElementNS(xmlnsURL,"svg");svgEl.setAttributeNS(null,"viewBox","0 0 512 512");const useEl=document.createElementNS(xmlnsURL,"use");return svgEl.appendChild(useEl),useEl.setAttributeNS(null,"href","#vjs-icon-".concat(iconName)),iconContainer.appendChild(svgEl),this.iconIsSet_?el.replaceChild(iconContainer,el.querySelector(".vjs-icon-placeholder")):el.appendChild(iconContainer),this.iconIsSet_=!0,iconContainer}addChild(child){let component,componentName,options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},index=arguments.length>2&&void 0!==arguments[2]?arguments[2]:this.children_.length;if("string"==typeof child){componentName=toTitleCase$1(child);const componentClassName=options.componentClass||componentName;options.name=componentName;const ComponentClass=Component$1.getComponent(componentClassName);if(!ComponentClass)throw new Error("Component ".concat(componentClassName," does not exist"));if("function"!=typeof ComponentClass)return null;component=new ComponentClass(this.player_||this,options)}else component=child;if(component.parentComponent_&&component.parentComponent_.removeChild(component),this.children_.splice(index,0,component),component.parentComponent_=this,"function"==typeof component.id&&(this.childIndex_[component.id()]=component),componentName=componentName||component.name&&toTitleCase$1(component.name()),componentName&&(this.childNameIndex_[componentName]=component,this.childNameIndex_[toLowerCase(componentName)]=component),"function"==typeof component.el&&component.el()){let refNode=null;this.children_[index+1]&&(this.children_[index+1].el_?refNode=this.children_[index+1].el_:isEl(this.children_[index+1])&&(refNode=this.children_[index+1])),this.contentEl().insertBefore(component.el(),refNode)}return component}removeChild(component){if("string"==typeof component&&(component=this.getChild(component)),!component||!this.children_)return;let childFound=!1;for(let i=this.children_.length-1;i>=0;i--)if(this.children_[i]===component){childFound=!0,this.children_.splice(i,1);break}if(!childFound)return;component.parentComponent_=null,this.childIndex_[component.id()]=null,this.childNameIndex_[toTitleCase$1(component.name())]=null,this.childNameIndex_[toLowerCase(component.name())]=null;const compEl=component.el();compEl&&compEl.parentNode===this.contentEl()&&this.contentEl().removeChild(component.el())}initChildren(){const children=this.options_.children;if(children){const parentOptions=this.options_,handleAdd=child=>{const name=child.name;let opts=child.opts;if(void 0!==parentOptions[name]&&(opts=parentOptions[name]),!1===opts)return;!0===opts&&(opts={}),opts.playerOptions=this.options_.playerOptions;const newChild=this.addChild(name,opts);newChild&&(this[name]=newChild)};let workingChildren;const Tech=Component$1.getComponent("Tech");workingChildren=Array.isArray(children)?children:Object.keys(children),workingChildren.concat(Object.keys(this.options_).filter((function(child){return!workingChildren.some((function(wchild){return"string"==typeof wchild?child===wchild:child===wchild.name}))}))).map((child=>{let name,opts;return"string"==typeof child?(name=child,opts=children[name]||this.options_[name]||{}):(name=child.name,opts=child),{name:name,opts:opts}})).filter((child=>{const c=Component$1.getComponent(child.opts.componentClass||toTitleCase$1(child.name));return c&&!Tech.isTech(c)})).forEach(handleAdd)}}buildCSSClass(){return""}ready(fn){let sync=arguments.length>1&&void 0!==arguments[1]&&arguments[1];if(fn)return this.isReady_?void(sync?fn.call(this):this.setTimeout(fn,1)):(this.readyQueue_=this.readyQueue_||[],void this.readyQueue_.push(fn))}triggerReady(){this.isReady_=!0,this.setTimeout((function(){const readyQueue=this.readyQueue_;this.readyQueue_=[],readyQueue&&readyQueue.length>0&&readyQueue.forEach((function(fn){fn.call(this)}),this),this.trigger("ready")}),1)}$(selector,context){return $(selector,context||this.contentEl())}$$(selector,context){return $$(selector,context||this.contentEl())}hasClass(classToCheck){return hasClass(this.el_,classToCheck)}addClass(){for(var _len15=arguments.length,classesToAdd=new Array(_len15),_key15=0;_key15<_len15;_key15++)classesToAdd[_key15]=arguments[_key15];addClass(this.el_,...classesToAdd)}removeClass(){for(var _len16=arguments.length,classesToRemove=new Array(_len16),_key16=0;_key16<_len16;_key16++)classesToRemove[_key16]=arguments[_key16];removeClass(this.el_,...classesToRemove)}toggleClass(classToToggle,predicate){toggleClass(this.el_,classToToggle,predicate)}show(){this.removeClass("vjs-hidden")}hide(){this.addClass("vjs-hidden")}lockShowing(){this.addClass("vjs-lock-showing")}unlockShowing(){this.removeClass("vjs-lock-showing")}getAttribute(attribute){return getAttribute(this.el_,attribute)}setAttribute(attribute,value){setAttribute(this.el_,attribute,value)}removeAttribute(attribute){removeAttribute(this.el_,attribute)}width(num,skipListeners){return this.dimension("width",num,skipListeners)}height(num,skipListeners){return this.dimension("height",num,skipListeners)}dimensions(width,height){this.width(width,!0),this.height(height)}dimension(widthOrHeight,num,skipListeners){if(void 0!==num)return null!==num&&num==num||(num=0),-1!==(""+num).indexOf("%")||-1!==(""+num).indexOf("px")?this.el_.style[widthOrHeight]=num:this.el_.style[widthOrHeight]="auto"===num?"":num+"px",void(skipListeners||this.trigger("componentresize"));if(!this.el_)return 0;const val=this.el_.style[widthOrHeight],pxIndex=val.indexOf("px");return-1!==pxIndex?parseInt(val.slice(0,pxIndex),10):parseInt(this.el_["offset"+toTitleCase$1(widthOrHeight)],10)}currentDimension(widthOrHeight){let computedWidthOrHeight=0;if("width"!==widthOrHeight&&"height"!==widthOrHeight)throw new Error("currentDimension only accepts width or height value");if(computedWidthOrHeight=computedStyle(this.el_,widthOrHeight),computedWidthOrHeight=parseFloat(computedWidthOrHeight),0===computedWidthOrHeight||isNaN(computedWidthOrHeight)){const rule="offset".concat(toTitleCase$1(widthOrHeight));computedWidthOrHeight=this.el_[rule]}return computedWidthOrHeight}currentDimensions(){return{width:this.currentDimension("width"),height:this.currentDimension("height")}}currentWidth(){return this.currentDimension("width")}currentHeight(){return this.currentDimension("height")}focus(){this.el_.focus()}blur(){this.el_.blur()}handleKeyDown(event){this.player_&&(keycode.isEventKey(event,"Tab")||event.stopPropagation(),this.player_.handleKeyDown(event))}handleKeyPress(event){this.handleKeyDown(event)}emitTapEvents(){let touchStart=0,firstTouch=null;let couldBeTap;this.on("touchstart",(function(event){1===event.touches.length&&(firstTouch={pageX:event.touches[0].pageX,pageY:event.touches[0].pageY},touchStart=window.performance.now(),couldBeTap=!0)})),this.on("touchmove",(function(event){if(event.touches.length>1)couldBeTap=!1;else if(firstTouch){const xdiff=event.touches[0].pageX-firstTouch.pageX,ydiff=event.touches[0].pageY-firstTouch.pageY;Math.sqrt(xdiff*xdiff+ydiff*ydiff)>10&&(couldBeTap=!1)}}));const noTap=function(){couldBeTap=!1};this.on("touchleave",noTap),this.on("touchcancel",noTap),this.on("touchend",(function(event){if(firstTouch=null,!0===couldBeTap){window.performance.now()-touchStart<200&&(event.preventDefault(),this.trigger("tap"))}}))}enableTouchActivity(){if(!this.player()||!this.player().reportUserActivity)return;const report=bind_(this.player(),this.player().reportUserActivity);let touchHolding;this.on("touchstart",(function(){report(),this.clearInterval(touchHolding),touchHolding=this.setInterval(report,250)}));const touchEnd=function(event){report(),this.clearInterval(touchHolding)};this.on("touchmove",report),this.on("touchend",touchEnd),this.on("touchcancel",touchEnd)}setTimeout(fn,timeout){var timeoutId;return fn=bind_(this,fn),this.clearTimersOnDispose_(),timeoutId=window.setTimeout((()=>{this.setTimeoutIds_.has(timeoutId)&&this.setTimeoutIds_.delete(timeoutId),fn()}),timeout),this.setTimeoutIds_.add(timeoutId),timeoutId}clearTimeout(timeoutId){return this.setTimeoutIds_.has(timeoutId)&&(this.setTimeoutIds_.delete(timeoutId),window.clearTimeout(timeoutId)),timeoutId}setInterval(fn,interval){fn=bind_(this,fn),this.clearTimersOnDispose_();const intervalId=window.setInterval(fn,interval);return this.setIntervalIds_.add(intervalId),intervalId}clearInterval(intervalId){return this.setIntervalIds_.has(intervalId)&&(this.setIntervalIds_.delete(intervalId),window.clearInterval(intervalId)),intervalId}requestAnimationFrame(fn){var id;return this.clearTimersOnDispose_(),fn=bind_(this,fn),id=window.requestAnimationFrame((()=>{this.rafIds_.has(id)&&this.rafIds_.delete(id),fn()})),this.rafIds_.add(id),id}requestNamedAnimationFrame(name,fn){if(this.namedRafs_.has(name))return;this.clearTimersOnDispose_(),fn=bind_(this,fn);const id=this.requestAnimationFrame((()=>{fn(),this.namedRafs_.has(name)&&this.namedRafs_.delete(name)}));return this.namedRafs_.set(name,id),name}cancelNamedAnimationFrame(name){this.namedRafs_.has(name)&&(this.cancelAnimationFrame(this.namedRafs_.get(name)),this.namedRafs_.delete(name))}cancelAnimationFrame(id){return this.rafIds_.has(id)&&(this.rafIds_.delete(id),window.cancelAnimationFrame(id)),id}clearTimersOnDispose_(){this.clearingTimersOnDispose_||(this.clearingTimersOnDispose_=!0,this.one("dispose",(()=>{[["namedRafs_","cancelNamedAnimationFrame"],["rafIds_","cancelAnimationFrame"],["setTimeoutIds_","clearTimeout"],["setIntervalIds_","clearInterval"]].forEach((_ref4=>{let[idName,cancelName]=_ref4;this[idName].forEach(((val,key)=>this[cancelName](key)))})),this.clearingTimersOnDispose_=!1})))}static registerComponent(name,ComponentToRegister){if("string"!=typeof name||!name)throw new Error('Illegal component name, "'.concat(name,'"; must be a non-empty string.'));const Tech=Component$1.getComponent("Tech"),isTech=Tech&&Tech.isTech(ComponentToRegister),isComp=Component$1===ComponentToRegister||Component$1.prototype.isPrototypeOf(ComponentToRegister.prototype);if(isTech||!isComp){let reason;throw reason=isTech?"techs must be registered using Tech.registerTech()":"must be a Component subclass",new Error('Illegal component, "'.concat(name,'"; ').concat(reason,"."))}name=toTitleCase$1(name),Component$1.components_||(Component$1.components_={});const Player=Component$1.getComponent("Player");if("Player"===name&&Player&&Player.players){const players=Player.players,playerNames=Object.keys(players);if(players&&playerNames.length>0&&playerNames.map((pname=>players[pname])).every(Boolean))throw new Error("Can not register Player component after player has been created.")}return Component$1.components_[name]=ComponentToRegister,Component$1.components_[toLowerCase(name)]=ComponentToRegister,ComponentToRegister}static getComponent(name){if(name&&Component$1.components_)return Component$1.components_[name]}}function getRange(fnName,valueIndex,ranges,rangeIndex){return function(fnName,index,maxIndex){if("number"!=typeof index||index<0||index>maxIndex)throw new Error("Failed to execute '".concat(fnName,"' on 'TimeRanges': The index provided (").concat(index,") is non-numeric or out of bounds (0-").concat(maxIndex,")."))}(fnName,rangeIndex,ranges.length-1),ranges[rangeIndex][valueIndex]}function createTimeRangesObj(ranges){let timeRangesObj;return timeRangesObj=void 0===ranges||0===ranges.length?{length:0,start(){throw new Error("This TimeRanges object is empty")},end(){throw new Error("This TimeRanges object is empty")}}:{length:ranges.length,start:getRange.bind(null,"start",0,ranges),end:getRange.bind(null,"end",1,ranges)},window.Symbol&&window.Symbol.iterator&&(timeRangesObj[window.Symbol.iterator]=()=>(ranges||[]).values()),timeRangesObj}function createTimeRanges$1(start,end){return Array.isArray(start)?createTimeRangesObj(start):void 0===start||void 0===end?createTimeRangesObj():createTimeRangesObj([[start,end]])}Component$1.registerComponent("Component",Component$1);const defaultImplementation=function(seconds,guide){seconds=seconds<0?0:seconds;let s=Math.floor(seconds%60),m=Math.floor(seconds/60%60),h=Math.floor(seconds/3600);const gm=Math.floor(guide/60%60),gh=Math.floor(guide/3600);return(isNaN(seconds)||seconds===1/0)&&(h=m=s="-"),h=h>0||gh>0?h+":":"",m=((h||gm>=10)&&m<10?"0"+m:m)+":",s=s<10?"0"+s:s,h+m+s};let implementation=defaultImplementation;function setFormatTime(customImplementation){implementation=customImplementation}function resetFormatTime(){implementation=defaultImplementation}function formatTime(seconds){let guide=arguments.length>1&&void 0!==arguments[1]?arguments[1]:seconds;return implementation(seconds,guide)}var Time=Object.freeze({__proto__:null,createTimeRanges:createTimeRanges$1,createTimeRange:createTimeRanges$1,setFormatTime:setFormatTime,resetFormatTime:resetFormatTime,formatTime:formatTime});function bufferedPercent(buffered,duration){let start,end,bufferedDuration=0;if(!duration)return 0;buffered&&buffered.length||(buffered=createTimeRanges$1(0,0));for(let i=0;i<buffered.length;i++)start=buffered.start(i),end=buffered.end(i),end>duration&&(end=duration),bufferedDuration+=end-start;return bufferedDuration/duration}function MediaError(value){if(value instanceof MediaError)return value;"number"==typeof value?this.code=value:"string"==typeof value?this.message=value:isObject$1(value)&&("number"==typeof value.code&&(this.code=value.code),Object.assign(this,value)),this.message||(this.message=MediaError.defaultMessages[this.code]||"")}MediaError.prototype.code=0,MediaError.prototype.message="",MediaError.prototype.status=null,MediaError.errorTypes=["MEDIA_ERR_CUSTOM","MEDIA_ERR_ABORTED","MEDIA_ERR_NETWORK","MEDIA_ERR_DECODE","MEDIA_ERR_SRC_NOT_SUPPORTED","MEDIA_ERR_ENCRYPTED"],MediaError.defaultMessages={1:"You aborted the media playback",2:"A network error caused the media download to fail part-way.",3:"The media playback was aborted due to a corruption problem or because the media used features your browser did not support.",4:"The media could not be loaded, either because the server or network failed or because the format is not supported.",5:"The media is encrypted and we do not have the keys to decrypt it."};for(let errNum=0;errNum<MediaError.errorTypes.length;errNum++)MediaError[MediaError.errorTypes[errNum]]=errNum,MediaError.prototype[MediaError.errorTypes[errNum]]=errNum;var tuple=function(obj,reviver){var json,error=null;try{json=JSON.parse(obj,reviver)}catch(err){error=err}return[error,json]};function isPromise(value){return null!=value&&"function"==typeof value.then}function silencePromise(value){isPromise(value)&&value.then(null,(e=>{}))}const trackToJson_=function(track){return["kind","label","language","id","inBandMetadataTrackDispatchType","mode","src"].reduce(((acc,prop,i)=>(track[prop]&&(acc[prop]=track[prop]),acc)),{cues:track.cues&&Array.prototype.map.call(track.cues,(function(cue){return{startTime:cue.startTime,endTime:cue.endTime,text:cue.text,id:cue.id}}))})};var textTrackConverter_textTracksToJson=function(tech){const trackEls=tech.$$("track"),trackObjs=Array.prototype.map.call(trackEls,(t=>t.track));return Array.prototype.map.call(trackEls,(function(trackEl){const json=trackToJson_(trackEl.track);return trackEl.src&&(json.src=trackEl.src),json})).concat(Array.prototype.filter.call(tech.textTracks(),(function(track){return-1===trackObjs.indexOf(track)})).map(trackToJson_))},textTrackConverter_jsonToTextTracks=function(json,tech){return json.forEach((function(track){const addedTrack=tech.addRemoteTextTrack(track).track;!track.src&&track.cues&&track.cues.forEach((cue=>addedTrack.addCue(cue)))})),tech.textTracks()};class ModalDialog extends Component$1{constructor(player,options){super(player,options),this.handleKeyDown_=e=>this.handleKeyDown(e),this.close_=e=>this.close(e),this.opened_=this.hasBeenOpened_=this.hasBeenFilled_=!1,this.closeable(!this.options_.uncloseable),this.content(this.options_.content),this.contentEl_=createEl("div",{className:"".concat("vjs-modal-dialog","-content")},{role:"document"}),this.descEl_=createEl("p",{className:"".concat("vjs-modal-dialog","-description vjs-control-text"),id:this.el().getAttribute("aria-describedby")}),textContent(this.descEl_,this.description()),this.el_.appendChild(this.descEl_),this.el_.appendChild(this.contentEl_)}createEl(){return super.createEl("div",{className:this.buildCSSClass(),tabIndex:-1},{"aria-describedby":"".concat(this.id(),"_description"),"aria-hidden":"true","aria-label":this.label(),role:"dialog"})}dispose(){this.contentEl_=null,this.descEl_=null,this.previouslyActiveEl_=null,super.dispose()}buildCSSClass(){return"".concat("vjs-modal-dialog"," vjs-hidden ").concat(super.buildCSSClass())}label(){return this.localize(this.options_.label||"Modal Window")}description(){let desc=this.options_.description||this.localize("This is a modal window.");return this.closeable()&&(desc+=" "+this.localize("This modal can be closed by pressing the Escape key or activating the close button.")),desc}open(){if(!this.opened_){const player=this.player();this.trigger("beforemodalopen"),this.opened_=!0,(this.options_.fillAlways||!this.hasBeenOpened_&&!this.hasBeenFilled_)&&this.fill(),this.wasPlaying_=!player.paused(),this.options_.pauseOnOpen&&this.wasPlaying_&&player.pause(),this.on("keydown",this.handleKeyDown_),this.hadControls_=player.controls(),player.controls(!1),this.show(),this.conditionalFocus_(),this.el().setAttribute("aria-hidden","false"),this.trigger("modalopen"),this.hasBeenOpened_=!0}}opened(value){return"boolean"==typeof value&&this[value?"open":"close"](),this.opened_}close(){if(!this.opened_)return;const player=this.player();this.trigger("beforemodalclose"),this.opened_=!1,this.wasPlaying_&&this.options_.pauseOnOpen&&player.play(),this.off("keydown",this.handleKeyDown_),this.hadControls_&&player.controls(!0),this.hide(),this.el().setAttribute("aria-hidden","true"),this.trigger("modalclose"),this.conditionalBlur_(),this.options_.temporary&&this.dispose()}closeable(value){if("boolean"==typeof value){const closeable=this.closeable_=!!value;let close=this.getChild("closeButton");if(closeable&&!close){const temp=this.contentEl_;this.contentEl_=this.el_,close=this.addChild("closeButton",{controlText:"Close Modal Dialog"}),this.contentEl_=temp,this.on(close,"close",this.close_)}!closeable&&close&&(this.off(close,"close",this.close_),this.removeChild(close),close.dispose())}return this.closeable_}fill(){this.fillWith(this.content())}fillWith(content){const contentEl=this.contentEl(),parentEl=contentEl.parentNode,nextSiblingEl=contentEl.nextSibling;this.trigger("beforemodalfill"),this.hasBeenFilled_=!0,parentEl.removeChild(contentEl),this.empty(),insertContent(contentEl,content),this.trigger("modalfill"),nextSiblingEl?parentEl.insertBefore(contentEl,nextSiblingEl):parentEl.appendChild(contentEl);const closeButton=this.getChild("closeButton");closeButton&&parentEl.appendChild(closeButton.el_)}empty(){this.trigger("beforemodalempty"),emptyEl(this.contentEl()),this.trigger("modalempty")}content(value){return void 0!==value&&(this.content_=value),this.content_}conditionalFocus_(){const activeEl=document.activeElement,playerEl=this.player_.el_;this.previouslyActiveEl_=null,(playerEl.contains(activeEl)||playerEl===activeEl)&&(this.previouslyActiveEl_=activeEl,this.focus())}conditionalBlur_(){this.previouslyActiveEl_&&(this.previouslyActiveEl_.focus(),this.previouslyActiveEl_=null)}handleKeyDown(event){if(event.stopPropagation(),keycode.isEventKey(event,"Escape")&&this.closeable())return event.preventDefault(),void this.close();if(!keycode.isEventKey(event,"Tab"))return;const focusableEls=this.focusableEls_(),activeEl=this.el_.querySelector(":focus");let focusIndex;for(let i=0;i<focusableEls.length;i++)if(activeEl===focusableEls[i]){focusIndex=i;break}document.activeElement===this.el_&&(focusIndex=0),event.shiftKey&&0===focusIndex?(focusableEls[focusableEls.length-1].focus(),event.preventDefault()):event.shiftKey||focusIndex!==focusableEls.length-1||(focusableEls[0].focus(),event.preventDefault())}focusableEls_(){const allChildren=this.el_.querySelectorAll("*");return Array.prototype.filter.call(allChildren,(child=>(child instanceof window.HTMLAnchorElement||child instanceof window.HTMLAreaElement)&&child.hasAttribute("href")||(child instanceof window.HTMLInputElement||child instanceof window.HTMLSelectElement||child instanceof window.HTMLTextAreaElement||child instanceof window.HTMLButtonElement)&&!child.hasAttribute("disabled")||child instanceof window.HTMLIFrameElement||child instanceof window.HTMLObjectElement||child instanceof window.HTMLEmbedElement||child.hasAttribute("tabindex")&&-1!==child.getAttribute("tabindex")||child.hasAttribute("contenteditable")))}}ModalDialog.prototype.options_={pauseOnOpen:!0,temporary:!0},Component$1.registerComponent("ModalDialog",ModalDialog);class TrackList extends EventTarget$2{constructor(){let tracks=arguments.length>0&&void 0!==arguments[0]?arguments[0]:[];super(),this.tracks_=[],Object.defineProperty(this,"length",{get(){return this.tracks_.length}});for(let i=0;i<tracks.length;i++)this.addTrack(tracks[i])}addTrack(track){const index=this.tracks_.length;""+index in this||Object.defineProperty(this,index,{get(){return this.tracks_[index]}}),-1===this.tracks_.indexOf(track)&&(this.tracks_.push(track),this.trigger({track:track,type:"addtrack",target:this})),track.labelchange_=()=>{this.trigger({track:track,type:"labelchange",target:this})},isEvented(track)&&track.addEventListener("labelchange",track.labelchange_)}removeTrack(rtrack){let track;for(let i=0,l=this.length;i<l;i++)if(this[i]===rtrack){track=this[i],track.off&&track.off(),this.tracks_.splice(i,1);break}track&&this.trigger({track:track,type:"removetrack",target:this})}getTrackById(id){let result=null;for(let i=0,l=this.length;i<l;i++){const track=this[i];if(track.id===id){result=track;break}}return result}}TrackList.prototype.allowedEvents_={change:"change",addtrack:"addtrack",removetrack:"removetrack",labelchange:"labelchange"};for(const event in TrackList.prototype.allowedEvents_)TrackList.prototype["on"+event]=null;const disableOthers$1=function(list,track){for(let i=0;i<list.length;i++)Object.keys(list[i]).length&&track.id!==list[i].id&&(list[i].enabled=!1)};const disableOthers=function(list,track){for(let i=0;i<list.length;i++)Object.keys(list[i]).length&&track.id!==list[i].id&&(list[i].selected=!1)};class TextTrackList extends TrackList{addTrack(track){super.addTrack(track),this.queueChange_||(this.queueChange_=()=>this.queueTrigger("change")),this.triggerSelectedlanguagechange||(this.triggerSelectedlanguagechange_=()=>this.trigger("selectedlanguagechange")),track.addEventListener("modechange",this.queueChange_);-1===["metadata","chapters"].indexOf(track.kind)&&track.addEventListener("modechange",this.triggerSelectedlanguagechange_)}removeTrack(rtrack){super.removeTrack(rtrack),rtrack.removeEventListener&&(this.queueChange_&&rtrack.removeEventListener("modechange",this.queueChange_),this.selectedlanguagechange_&&rtrack.removeEventListener("modechange",this.triggerSelectedlanguagechange_))}}class TextTrackCueList{constructor(cues){TextTrackCueList.prototype.setCues_.call(this,cues),Object.defineProperty(this,"length",{get(){return this.length_}})}setCues_(cues){const oldLength=this.length||0;let i=0;const l=cues.length;this.cues_=cues,this.length_=cues.length;const defineProp=function(index){""+index in this||Object.defineProperty(this,""+index,{get(){return this.cues_[index]}})};if(oldLength<l)for(i=oldLength;i<l;i++)defineProp.call(this,i)}getCueById(id){let result=null;for(let i=0,l=this.length;i<l;i++){const cue=this[i];if(cue.id===id){result=cue;break}}return result}}const VideoTrackKind={alternative:"alternative",captions:"captions",main:"main",sign:"sign",subtitles:"subtitles",commentary:"commentary"},AudioTrackKind={alternative:"alternative",descriptions:"descriptions",main:"main","main-desc":"main-desc",translation:"translation",commentary:"commentary"},TextTrackKind={subtitles:"subtitles",captions:"captions",descriptions:"descriptions",chapters:"chapters",metadata:"metadata"},TextTrackMode={disabled:"disabled",hidden:"hidden",showing:"showing"};class Track extends EventTarget$2{constructor(){let options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};super();const trackProps={id:options.id||"vjs_track_"+newGUID(),kind:options.kind||"",language:options.language||""};let label=options.label||"";for(const key in trackProps)Object.defineProperty(this,key,{get:()=>trackProps[key],set(){}});Object.defineProperty(this,"label",{get:()=>label,set(newLabel){newLabel!==label&&(label=newLabel,this.trigger("labelchange"))}})}}const parseUrl=function(url){const props=["protocol","hostname","port","pathname","search","hash","host"],a=document.createElement("a");a.href=url;const details={};for(let i=0;i<props.length;i++)details[props[i]]=a[props[i]];return"http:"===details.protocol&&(details.host=details.host.replace(/:80$/,"")),"https:"===details.protocol&&(details.host=details.host.replace(/:443$/,"")),details.protocol||(details.protocol=window.location.protocol),details.host||(details.host=window.location.host),details},getAbsoluteURL=function(url){if(!url.match(/^https?:\/\//)){const a=document.createElement("a");a.href=url,url=a.href}return url},getFileExtension=function(path){if("string"==typeof path){const pathParts=/^(\/?)([\s\S]*?)((?:\.{1,2}|[^\/]+?)(\.([^\.\/\?]+)))(?:[\/]*|[\?].*)$/.exec(path);if(pathParts)return pathParts.pop().toLowerCase()}return""},isCrossOrigin=function(url){let winLoc=arguments.length>1&&void 0!==arguments[1]?arguments[1]:window.location;const urlInfo=parseUrl(url),srcProtocol=":"===urlInfo.protocol?winLoc.protocol:urlInfo.protocol,crossOrigin=srcProtocol+urlInfo.host!==winLoc.protocol+winLoc.host;return crossOrigin};var x,Url=Object.freeze({__proto__:null,parseUrl:parseUrl,getAbsoluteURL:getAbsoluteURL,getFileExtension:getFileExtension,isCrossOrigin:isCrossOrigin}),window_1="undefined"!=typeof window?window:void 0!==commonjsGlobal?commonjsGlobal:"undefined"!=typeof self?self:{},_extends_1=createCommonjsModule((function(module){function _extends(){return module.exports=_extends=Object.assign?Object.assign.bind():function(target){for(var i=1;i<arguments.length;i++){var source=arguments[i];for(var key in source)Object.prototype.hasOwnProperty.call(source,key)&&(target[key]=source[key])}return target},module.exports.__esModule=!0,module.exports.default=module.exports,_extends.apply(this,arguments)}module.exports=_extends,module.exports.__esModule=!0,module.exports.default=module.exports})),_extends$1=(x=_extends_1)&&x.__esModule&&Object.prototype.hasOwnProperty.call(x,"default")?x.default:x,isFunction_1=function(fn){if(!fn)return!1;var string=toString.call(fn);return"[object Function]"===string||"function"==typeof fn&&"[object RegExp]"!==string||"undefined"!=typeof window&&(fn===window.setTimeout||fn===window.alert||fn===window.confirm||fn===window.prompt)},toString=Object.prototype.toString;var httpHandler=function(callback,decodeResponseBody){return void 0===decodeResponseBody&&(decodeResponseBody=!1),function(err,response,responseBody){if(err)callback(err);else if(response.statusCode>=400&&response.statusCode<=599){var cause=responseBody;if(decodeResponseBody)if(window_1.TextDecoder){var charset=function(contentTypeHeader){void 0===contentTypeHeader&&(contentTypeHeader="");return contentTypeHeader.toLowerCase().split(";").reduce((function(charset,contentType){var _contentType$split=contentType.split("="),type=_contentType$split[0],value=_contentType$split[1];return"charset"===type.trim()?value.trim():charset}),"utf-8")}(response.headers&&response.headers["content-type"]);try{cause=new TextDecoder(charset).decode(responseBody)}catch(e){}}else cause=String.fromCharCode.apply(null,new Uint8Array(responseBody));callback({cause:cause})}else callback(null,responseBody)}};createXHR.httpHandler=httpHandler;
 /**
    * @license
    * slighly modified parse-headers 2.0.2 <https://github.com/kesla/parse-headers/>
@@ -17,15 +17,15 @@
    * Available under the MIT license
    * <https://github.com/kesla/parse-headers/blob/master/LICENCE>
    */
-var lib=createXHR,default_1=createXHR;function initParams(uri,options,callback){var params=uri;return isFunction_1(options)?(callback=options,"string"==typeof uri&&(params={uri:uri})):params=_extends_1({},options,{uri:uri}),params.callback=callback,params}function createXHR(uri,options,callback){return _createXHR(options=initParams(uri,options,callback))}function _createXHR(options){if(void 0===options.callback)throw new Error("callback argument missing");var called=!1,callback=function(err,response,body){called||(called=!0,options.callback(err,response,body))};function getBody(){var body=void 0;if(body=xhr.response?xhr.response:xhr.responseText||function(xhr){try{if("document"===xhr.responseType)return xhr.responseXML;var firefoxBugTakenEffect=xhr.responseXML&&"parsererror"===xhr.responseXML.documentElement.nodeName;if(""===xhr.responseType&&!firefoxBugTakenEffect)return xhr.responseXML}catch(e){}return null}(xhr),isJson)try{body=JSON.parse(body)}catch(e){}return body}function errorFunc(evt){return clearTimeout(timeoutTimer),evt instanceof Error||(evt=new Error(""+(evt||"Unknown XMLHttpRequest Error"))),evt.statusCode=0,callback(evt,failureResponse)}function loadFunc(){if(!aborted){var status;clearTimeout(timeoutTimer),status=options.useXDR&&void 0===xhr.status?200:1223===xhr.status?204:xhr.status;var response=failureResponse,err=null;return 0!==status?(response={body:getBody(),statusCode:status,method:method,headers:{},url:uri,rawRequest:xhr},xhr.getAllResponseHeaders&&(response.headers=function(headers){var result={};return headers?(headers.trim().split("\n").forEach((function(row){var index=row.indexOf(":"),key=row.slice(0,index).trim().toLowerCase(),value=row.slice(index+1).trim();void 0===result[key]?result[key]=value:Array.isArray(result[key])?result[key].push(value):result[key]=[result[key],value]})),result):result}(xhr.getAllResponseHeaders()))):err=new Error("Internal XMLHttpRequest Error"),callback(err,response,response.body)}}var key,aborted,xhr=options.xhr||null;xhr||(xhr=options.cors||options.useXDR?new createXHR.XDomainRequest:new createXHR.XMLHttpRequest);var timeoutTimer,uri=xhr.url=options.uri||options.url,method=xhr.method=options.method||"GET",body=options.body||options.data,headers=xhr.headers=options.headers||{},sync=!!options.sync,isJson=!1,failureResponse={body:void 0,headers:{},statusCode:0,method:method,url:uri,rawRequest:xhr};if("json"in options&&!1!==options.json&&(isJson=!0,headers.accept||headers.Accept||(headers.Accept="application/json"),"GET"!==method&&"HEAD"!==method&&(headers["content-type"]||headers["Content-Type"]||(headers["Content-Type"]="application/json"),body=JSON.stringify(!0===options.json?body:options.json))),xhr.onreadystatechange=function(){4===xhr.readyState&&setTimeout(loadFunc,0)},xhr.onload=loadFunc,xhr.onerror=errorFunc,xhr.onprogress=function(){},xhr.onabort=function(){aborted=!0},xhr.ontimeout=errorFunc,xhr.open(method,uri,!sync,options.username,options.password),sync||(xhr.withCredentials=!!options.withCredentials),!sync&&options.timeout>0&&(timeoutTimer=setTimeout((function(){if(!aborted){aborted=!0,xhr.abort("timeout");var e=new Error("XMLHttpRequest timeout");e.code="ETIMEDOUT",errorFunc(e)}}),options.timeout)),xhr.setRequestHeader)for(key in headers)headers.hasOwnProperty(key)&&xhr.setRequestHeader(key,headers[key]);else if(options.headers&&!function(obj){for(var i in obj)if(obj.hasOwnProperty(i))return!1;return!0}(options.headers))throw new Error("Headers cannot be set on an XDomainRequest object");return"responseType"in options&&(xhr.responseType=options.responseType),"beforeSend"in options&&"function"==typeof options.beforeSend&&options.beforeSend(xhr),xhr.send(body||null),xhr}createXHR.XMLHttpRequest=window_1.XMLHttpRequest||function(){},createXHR.XDomainRequest="withCredentials"in new createXHR.XMLHttpRequest?createXHR.XMLHttpRequest:window_1.XDomainRequest,function(array,iterator){for(var i=0;i<array.length;i++)iterator(array[i])}(["get","put","post","patch","head","delete"],(function(method){createXHR["delete"===method?"del":method]=function(uri,options,callback){return(options=initParams(uri,options,callback)).method=method.toUpperCase(),_createXHR(options)}})),lib.default=default_1;const parseCues=function(srcContent,track){const parser=new window.WebVTT.Parser(window,window.vttjs,window.WebVTT.StringDecoder()),errors=[];parser.oncue=function(cue){track.addCue(cue)},parser.onparsingerror=function(error){errors.push(error)},parser.onflush=function(){track.trigger({type:"loadeddata",target:track})},parser.parse(srcContent),errors.length>0&&(window.console&&window.console.groupCollapsed&&window.console.groupCollapsed("Text Track parsing errors for ".concat(track.src)),errors.forEach((error=>log$1.error(error))),window.console&&window.console.groupEnd&&window.console.groupEnd()),parser.flush()},loadTrack=function(src,track){const opts={uri:src},crossOrigin=isCrossOrigin(src);crossOrigin&&(opts.cors=crossOrigin);const withCredentials="use-credentials"===track.tech_.crossOrigin();withCredentials&&(opts.withCredentials=withCredentials),lib(opts,bind_(this,(function(err,response,responseBody){if(err)return log$1.error(err,response);track.loaded_=!0,"function"!=typeof window.WebVTT?track.tech_&&track.tech_.any(["vttjsloaded","vttjserror"],(event=>{if("vttjserror"!==event.type)return parseCues(responseBody,track);log$1.error("vttjs failed to load, stopping trying to process ".concat(track.src))})):parseCues(responseBody,track)})))};class TextTrack extends Track{constructor(){let options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};if(!options.tech)throw new Error("A tech was not provided.");const settings=merge$2(options,{kind:TextTrackKind[options.kind]||"subtitles",language:options.language||options.srclang||""});let mode=TextTrackMode[settings.mode]||"disabled";const default_=settings.default;"metadata"!==settings.kind&&"chapters"!==settings.kind||(mode="hidden"),super(settings),this.tech_=settings.tech,this.cues_=[],this.activeCues_=[],this.preload_=!1!==this.tech_.preloadTextTracks;const cues=new TextTrackCueList(this.cues_),activeCues=new TextTrackCueList(this.activeCues_);let changed=!1;this.timeupdateHandler=bind_(this,(function(){let event=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};this.tech_.isDisposed()||(this.tech_.isReady_?(this.activeCues=this.activeCues,changed&&(this.trigger("cuechange"),changed=!1),"timeupdate"!==event.type&&(this.rvf_=this.tech_.requestVideoFrameCallback(this.timeupdateHandler))):"timeupdate"!==event.type&&(this.rvf_=this.tech_.requestVideoFrameCallback(this.timeupdateHandler)))}));this.tech_.one("dispose",(()=>{this.stopTracking()})),"disabled"!==mode&&this.startTracking(),Object.defineProperties(this,{default:{get:()=>default_,set(){}},mode:{get:()=>mode,set(newMode){TextTrackMode[newMode]&&mode!==newMode&&(mode=newMode,this.preload_||"disabled"===mode||0!==this.cues.length||loadTrack(this.src,this),this.stopTracking(),"disabled"!==mode&&this.startTracking(),this.trigger("modechange"))}},cues:{get(){return this.loaded_?cues:null},set(){}},activeCues:{get(){if(!this.loaded_)return null;if(0===this.cues.length)return activeCues;const ct=this.tech_.currentTime(),active=[];for(let i=0,l=this.cues.length;i<l;i++){const cue=this.cues[i];cue.startTime<=ct&&cue.endTime>=ct&&active.push(cue)}if(changed=!1,active.length!==this.activeCues_.length)changed=!0;else for(let i=0;i<active.length;i++)-1===this.activeCues_.indexOf(active[i])&&(changed=!0);return this.activeCues_=active,activeCues.setCues_(this.activeCues_),activeCues},set(){}}}),settings.src?(this.src=settings.src,this.preload_||(this.loaded_=!0),(this.preload_||"subtitles"!==settings.kind&&"captions"!==settings.kind)&&loadTrack(this.src,this)):this.loaded_=!0}startTracking(){this.rvf_=this.tech_.requestVideoFrameCallback(this.timeupdateHandler),this.tech_.on("timeupdate",this.timeupdateHandler)}stopTracking(){this.rvf_&&(this.tech_.cancelVideoFrameCallback(this.rvf_),this.rvf_=void 0),this.tech_.off("timeupdate",this.timeupdateHandler)}addCue(originalCue){let cue=originalCue;if(window.vttjs&&!(originalCue instanceof window.vttjs.VTTCue)){cue=new window.vttjs.VTTCue(originalCue.startTime,originalCue.endTime,originalCue.text);for(const prop in originalCue)prop in cue||(cue[prop]=originalCue[prop]);cue.id=originalCue.id,cue.originalCue_=originalCue}const tracks=this.tech_.textTracks();for(let i=0;i<tracks.length;i++)tracks[i]!==this&&tracks[i].removeCue(cue);this.cues_.push(cue),this.cues.setCues_(this.cues_)}removeCue(removeCue){let i=this.cues_.length;for(;i--;){const cue=this.cues_[i];if(cue===removeCue||cue.originalCue_&&cue.originalCue_===removeCue){this.cues_.splice(i,1),this.cues.setCues_(this.cues_);break}}}}TextTrack.prototype.allowedEvents_={cuechange:"cuechange"};class AudioTrack extends Track{constructor(){let options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};const settings=merge$2(options,{kind:AudioTrackKind[options.kind]||""});super(settings);let enabled=!1;Object.defineProperty(this,"enabled",{get:()=>enabled,set(newEnabled){"boolean"==typeof newEnabled&&newEnabled!==enabled&&(enabled=newEnabled,this.trigger("enabledchange"))}}),settings.enabled&&(this.enabled=settings.enabled),this.loaded_=!0}}class VideoTrack extends Track{constructor(){let options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};const settings=merge$2(options,{kind:VideoTrackKind[options.kind]||""});super(settings);let selected=!1;Object.defineProperty(this,"selected",{get:()=>selected,set(newSelected){"boolean"==typeof newSelected&&newSelected!==selected&&(selected=newSelected,this.trigger("selectedchange"))}}),settings.selected&&(this.selected=settings.selected)}}class HTMLTrackElement extends EventTarget$2{constructor(){let readyState,options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};super();const track=new TextTrack(options);this.kind=track.kind,this.src=track.src,this.srclang=track.language,this.label=track.label,this.default=track.default,Object.defineProperties(this,{readyState:{get:()=>readyState},track:{get:()=>track}}),readyState=HTMLTrackElement.NONE,track.addEventListener("loadeddata",(()=>{readyState=HTMLTrackElement.LOADED,this.trigger({type:"load",target:this})}))}}HTMLTrackElement.prototype.allowedEvents_={load:"load"},HTMLTrackElement.NONE=0,HTMLTrackElement.LOADING=1,HTMLTrackElement.LOADED=2,HTMLTrackElement.ERROR=3;const NORMAL={audio:{ListClass:class extends TrackList{constructor(){let tracks=arguments.length>0&&void 0!==arguments[0]?arguments[0]:[];for(let i=tracks.length-1;i>=0;i--)if(tracks[i].enabled){disableOthers$1(tracks,tracks[i]);break}super(tracks),this.changing_=!1}addTrack(track){track.enabled&&disableOthers$1(this,track),super.addTrack(track),track.addEventListener&&(track.enabledChange_=()=>{this.changing_||(this.changing_=!0,disableOthers$1(this,track),this.changing_=!1,this.trigger("change"))},track.addEventListener("enabledchange",track.enabledChange_))}removeTrack(rtrack){super.removeTrack(rtrack),rtrack.removeEventListener&&rtrack.enabledChange_&&(rtrack.removeEventListener("enabledchange",rtrack.enabledChange_),rtrack.enabledChange_=null)}},TrackClass:AudioTrack,capitalName:"Audio"},video:{ListClass:class extends TrackList{constructor(){let tracks=arguments.length>0&&void 0!==arguments[0]?arguments[0]:[];for(let i=tracks.length-1;i>=0;i--)if(tracks[i].selected){disableOthers(tracks,tracks[i]);break}super(tracks),this.changing_=!1,Object.defineProperty(this,"selectedIndex",{get(){for(let i=0;i<this.length;i++)if(this[i].selected)return i;return-1},set(){}})}addTrack(track){track.selected&&disableOthers(this,track),super.addTrack(track),track.addEventListener&&(track.selectedChange_=()=>{this.changing_||(this.changing_=!0,disableOthers(this,track),this.changing_=!1,this.trigger("change"))},track.addEventListener("selectedchange",track.selectedChange_))}removeTrack(rtrack){super.removeTrack(rtrack),rtrack.removeEventListener&&rtrack.selectedChange_&&(rtrack.removeEventListener("selectedchange",rtrack.selectedChange_),rtrack.selectedChange_=null)}},TrackClass:VideoTrack,capitalName:"Video"},text:{ListClass:TextTrackList,TrackClass:TextTrack,capitalName:"Text"}};Object.keys(NORMAL).forEach((function(type){NORMAL[type].getterName="".concat(type,"Tracks"),NORMAL[type].privateName="".concat(type,"Tracks_")}));const REMOTE={remoteText:{ListClass:TextTrackList,TrackClass:TextTrack,capitalName:"RemoteText",getterName:"remoteTextTracks",privateName:"remoteTextTracks_"},remoteTextEl:{ListClass:class{constructor(){let trackElements=arguments.length>0&&void 0!==arguments[0]?arguments[0]:[];this.trackElements_=[],Object.defineProperty(this,"length",{get(){return this.trackElements_.length}});for(let i=0,length=trackElements.length;i<length;i++)this.addTrackElement_(trackElements[i])}addTrackElement_(trackElement){const index=this.trackElements_.length;""+index in this||Object.defineProperty(this,index,{get(){return this.trackElements_[index]}}),-1===this.trackElements_.indexOf(trackElement)&&this.trackElements_.push(trackElement)}getTrackElementByTrack_(track){let trackElement_;for(let i=0,length=this.trackElements_.length;i<length;i++)if(track===this.trackElements_[i].track){trackElement_=this.trackElements_[i];break}return trackElement_}removeTrackElement_(trackElement){for(let i=0,length=this.trackElements_.length;i<length;i++)if(trackElement===this.trackElements_[i]){this.trackElements_[i].track&&"function"==typeof this.trackElements_[i].track.off&&this.trackElements_[i].track.off(),"function"==typeof this.trackElements_[i].off&&this.trackElements_[i].off(),this.trackElements_.splice(i,1);break}}},TrackClass:HTMLTrackElement,capitalName:"RemoteTextTrackEls",getterName:"remoteTextTrackEls",privateName:"remoteTextTrackEls_"}},ALL=Object.assign({},NORMAL,REMOTE);REMOTE.names=Object.keys(REMOTE),NORMAL.names=Object.keys(NORMAL),ALL.names=[].concat(REMOTE.names).concat(NORMAL.names);var doccy,topLevel=void 0!==commonjsGlobal?commonjsGlobal:"undefined"!=typeof window?window:{};"undefined"!=typeof document?doccy=document:(doccy=topLevel["__GLOBAL_DOCUMENT_CACHE@4"])||(doccy=topLevel["__GLOBAL_DOCUMENT_CACHE@4"]={});var document_1=doccy,_objCreate=Object.create||function(){function F(){}return function(o){if(1!==arguments.length)throw new Error("Object.create shim only accepts one parameter.");return F.prototype=o,new F}}();function ParsingError(errorData,message){this.name="ParsingError",this.code=errorData.code,this.message=message||errorData.message}function parseTimeStamp(input){function computeSeconds(h,m,s,f){return 3600*(0|h)+60*(0|m)+(0|s)+(0|f)/1e3}var m=input.match(/^(\d+):(\d{1,2})(:\d{1,2})?\.(\d{3})/);return m?m[3]?computeSeconds(m[1],m[2],m[3].replace(":",""),m[4]):m[1]>59?computeSeconds(m[1],m[2],0,m[4]):computeSeconds(0,m[1],m[2],m[4]):null}function Settings(){this.values=_objCreate(null)}function parseOptions(input,callback,keyValueDelim,groupDelim){var groups=groupDelim?input.split(groupDelim):[input];for(var i in groups)if("string"==typeof groups[i]){var kv=groups[i].split(keyValueDelim);if(2===kv.length)callback(kv[0].trim(),kv[1].trim())}}function parseCue(input,cue,regionList){var oInput=input;function consumeTimeStamp(){var ts=parseTimeStamp(input);if(null===ts)throw new ParsingError(ParsingError.Errors.BadTimeStamp,"Malformed timestamp: "+oInput);return input=input.replace(/^[^\sa-zA-Z-]+/,""),ts}function skipWhitespace(){input=input.replace(/^\s+/,"")}if(skipWhitespace(),cue.startTime=consumeTimeStamp(),skipWhitespace(),"--\x3e"!==input.substr(0,3))throw new ParsingError(ParsingError.Errors.BadTimeStamp,"Malformed time stamp (time stamps must be separated by '--\x3e'): "+oInput);input=input.substr(3),skipWhitespace(),cue.endTime=consumeTimeStamp(),skipWhitespace(),function(input,cue){var settings=new Settings;parseOptions(input,(function(k,v){switch(k){case"region":for(var i=regionList.length-1;i>=0;i--)if(regionList[i].id===v){settings.set(k,regionList[i].region);break}break;case"vertical":settings.alt(k,v,["rl","lr"]);break;case"line":var vals=v.split(","),vals0=vals[0];settings.integer(k,vals0),settings.percent(k,vals0)&&settings.set("snapToLines",!1),settings.alt(k,vals0,["auto"]),2===vals.length&&settings.alt("lineAlign",vals[1],["start","center","end"]);break;case"position":vals=v.split(","),settings.percent(k,vals[0]),2===vals.length&&settings.alt("positionAlign",vals[1],["start","center","end"]);break;case"size":settings.percent(k,v);break;case"align":settings.alt(k,v,["start","center","end","left","right"])}}),/:/,/\s/),cue.region=settings.get("region",null),cue.vertical=settings.get("vertical","");try{cue.line=settings.get("line","auto")}catch(e){}cue.lineAlign=settings.get("lineAlign","start"),cue.snapToLines=settings.get("snapToLines",!0),cue.size=settings.get("size",100);try{cue.align=settings.get("align","center")}catch(e){cue.align=settings.get("align","middle")}try{cue.position=settings.get("position","auto")}catch(e){cue.position=settings.get("position",{start:0,left:0,center:50,middle:50,end:100,right:100},cue.align)}cue.positionAlign=settings.get("positionAlign",{start:"start",left:"start",center:"center",middle:"center",end:"end",right:"end"},cue.align)}(input,cue)}ParsingError.prototype=_objCreate(Error.prototype),ParsingError.prototype.constructor=ParsingError,ParsingError.Errors={BadSignature:{code:0,message:"Malformed WebVTT signature."},BadTimeStamp:{code:1,message:"Malformed time stamp."}},Settings.prototype={set:function(k,v){this.get(k)||""===v||(this.values[k]=v)},get:function(k,dflt,defaultKey){return defaultKey?this.has(k)?this.values[k]:dflt[defaultKey]:this.has(k)?this.values[k]:dflt},has:function(k){return k in this.values},alt:function(k,v,a){for(var n=0;n<a.length;++n)if(v===a[n]){this.set(k,v);break}},integer:function(k,v){/^-?\d+$/.test(v)&&this.set(k,parseInt(v,10))},percent:function(k,v){return!!(v.match(/^([\d]{1,3})(\.[\d]*)?%$/)&&(v=parseFloat(v))>=0&&v<=100)&&(this.set(k,v),!0)}};var TEXTAREA_ELEMENT=document_1.createElement&&document_1.createElement("textarea"),TAG_NAME={c:"span",i:"i",b:"b",u:"u",ruby:"ruby",rt:"rt",v:"span",lang:"span"},DEFAULT_COLOR_CLASS={white:"rgba(255,255,255,1)",lime:"rgba(0,255,0,1)",cyan:"rgba(0,255,255,1)",red:"rgba(255,0,0,1)",yellow:"rgba(255,255,0,1)",magenta:"rgba(255,0,255,1)",blue:"rgba(0,0,255,1)",black:"rgba(0,0,0,1)"},TAG_ANNOTATION={v:"title",lang:"lang"},NEEDS_PARENT={rt:"ruby"};function parseContent(window,input){function nextToken(){if(!input)return null;var result,m=input.match(/^([^<]*)(<[^>]*>?)?/);return result=m[1]?m[1]:m[2],input=input.substr(result.length),result}function shouldAdd(current,element){return!NEEDS_PARENT[element.localName]||NEEDS_PARENT[element.localName]===current.localName}function createElement(type,annotation){var tagName=TAG_NAME[type];if(!tagName)return null;var element=window.document.createElement(tagName),name=TAG_ANNOTATION[type];return name&&annotation&&(element[name]=annotation.trim()),element}for(var t,s,rootDiv=window.document.createElement("div"),current=rootDiv,tagStack=[];null!==(t=nextToken());)if("<"!==t[0])current.appendChild(window.document.createTextNode((s=t,TEXTAREA_ELEMENT.innerHTML=s,s=TEXTAREA_ELEMENT.textContent,TEXTAREA_ELEMENT.textContent="",s)));else{if("/"===t[1]){tagStack.length&&tagStack[tagStack.length-1]===t.substr(2).replace(">","")&&(tagStack.pop(),current=current.parentNode);continue}var node,ts=parseTimeStamp(t.substr(1,t.length-2));if(ts){node=window.document.createProcessingInstruction("timestamp",ts),current.appendChild(node);continue}var m=t.match(/^<([^.\s/0-9>]+)(\.[^\s\\>]+)?([^>\\]+)?(\\?)>?$/);if(!m)continue;if(!(node=createElement(m[1],m[3])))continue;if(!shouldAdd(current,node))continue;if(m[2]){var classes=m[2].split(".");classes.forEach((function(cl){var bgColor=/^bg_/.test(cl),colorName=bgColor?cl.slice(3):cl;if(DEFAULT_COLOR_CLASS.hasOwnProperty(colorName)){var propName=bgColor?"background-color":"color",propValue=DEFAULT_COLOR_CLASS[colorName];node.style[propName]=propValue}})),node.className=classes.join(" ")}tagStack.push(m[1]),current.appendChild(node),current=node}return rootDiv}var strongRTLRanges=[[1470,1470],[1472,1472],[1475,1475],[1478,1478],[1488,1514],[1520,1524],[1544,1544],[1547,1547],[1549,1549],[1563,1563],[1566,1610],[1645,1647],[1649,1749],[1765,1766],[1774,1775],[1786,1805],[1807,1808],[1810,1839],[1869,1957],[1969,1969],[1984,2026],[2036,2037],[2042,2042],[2048,2069],[2074,2074],[2084,2084],[2088,2088],[2096,2110],[2112,2136],[2142,2142],[2208,2208],[2210,2220],[8207,8207],[64285,64285],[64287,64296],[64298,64310],[64312,64316],[64318,64318],[64320,64321],[64323,64324],[64326,64449],[64467,64829],[64848,64911],[64914,64967],[65008,65020],[65136,65140],[65142,65276],[67584,67589],[67592,67592],[67594,67637],[67639,67640],[67644,67644],[67647,67669],[67671,67679],[67840,67867],[67872,67897],[67903,67903],[67968,68023],[68030,68031],[68096,68096],[68112,68115],[68117,68119],[68121,68147],[68160,68167],[68176,68184],[68192,68223],[68352,68405],[68416,68437],[68440,68466],[68472,68479],[68608,68680],[126464,126467],[126469,126495],[126497,126498],[126500,126500],[126503,126503],[126505,126514],[126516,126519],[126521,126521],[126523,126523],[126530,126530],[126535,126535],[126537,126537],[126539,126539],[126541,126543],[126545,126546],[126548,126548],[126551,126551],[126553,126553],[126555,126555],[126557,126557],[126559,126559],[126561,126562],[126564,126564],[126567,126570],[126572,126578],[126580,126583],[126585,126588],[126590,126590],[126592,126601],[126603,126619],[126625,126627],[126629,126633],[126635,126651],[1114109,1114109]];function isStrongRTLChar(charCode){for(var i=0;i<strongRTLRanges.length;i++){var currentRange=strongRTLRanges[i];if(charCode>=currentRange[0]&&charCode<=currentRange[1])return!0}return!1}function determineBidi(cueDiv){var nodeStack=[],text="";if(!cueDiv||!cueDiv.childNodes)return"ltr";function pushNodes(nodeStack,node){for(var i=node.childNodes.length-1;i>=0;i--)nodeStack.push(node.childNodes[i])}function nextTextNode(nodeStack){if(!nodeStack||!nodeStack.length)return null;var node=nodeStack.pop(),text=node.textContent||node.innerText;if(text){var m=text.match(/^.*(\n|\r)/);return m?(nodeStack.length=0,m[0]):text}return"ruby"===node.tagName?nextTextNode(nodeStack):node.childNodes?(pushNodes(nodeStack,node),nextTextNode(nodeStack)):void 0}for(pushNodes(nodeStack,cueDiv);text=nextTextNode(nodeStack);)for(var i=0;i<text.length;i++)if(isStrongRTLChar(text.charCodeAt(i)))return"rtl";return"ltr"}function StyleBox(){}function CueStyleBox(window,cue,styleOptions){StyleBox.call(this),this.cue=cue,this.cueDiv=parseContent(window,cue.text);var styles={color:"rgba(255, 255, 255, 1)",backgroundColor:"rgba(0, 0, 0, 0.8)",position:"relative",left:0,right:0,top:0,bottom:0,display:"inline",writingMode:""===cue.vertical?"horizontal-tb":"lr"===cue.vertical?"vertical-lr":"vertical-rl",unicodeBidi:"plaintext"};this.applyStyles(styles,this.cueDiv),this.div=window.document.createElement("div"),styles={direction:determineBidi(this.cueDiv),writingMode:""===cue.vertical?"horizontal-tb":"lr"===cue.vertical?"vertical-lr":"vertical-rl",unicodeBidi:"plaintext",textAlign:"middle"===cue.align?"center":cue.align,font:styleOptions.font,whiteSpace:"pre-line",position:"absolute"},this.applyStyles(styles),this.div.appendChild(this.cueDiv);var textPos=0;switch(cue.positionAlign){case"start":textPos=cue.position;break;case"center":textPos=cue.position-cue.size/2;break;case"end":textPos=cue.position-cue.size}""===cue.vertical?this.applyStyles({left:this.formatStyle(textPos,"%"),width:this.formatStyle(cue.size,"%")}):this.applyStyles({top:this.formatStyle(textPos,"%"),height:this.formatStyle(cue.size,"%")}),this.move=function(box){this.applyStyles({top:this.formatStyle(box.top,"px"),bottom:this.formatStyle(box.bottom,"px"),left:this.formatStyle(box.left,"px"),right:this.formatStyle(box.right,"px"),height:this.formatStyle(box.height,"px"),width:this.formatStyle(box.width,"px")})}}function BoxPosition(obj){var lh,height,width,top;if(obj.div){height=obj.div.offsetHeight,width=obj.div.offsetWidth,top=obj.div.offsetTop;var rects=(rects=obj.div.childNodes)&&(rects=rects[0])&&rects.getClientRects&&rects.getClientRects();obj=obj.div.getBoundingClientRect(),lh=rects?Math.max(rects[0]&&rects[0].height||0,obj.height/rects.length):0}this.left=obj.left,this.right=obj.right,this.top=obj.top||top,this.height=obj.height||height,this.bottom=obj.bottom||top+(obj.height||height),this.width=obj.width||width,this.lineHeight=void 0!==lh?lh:obj.lineHeight}function moveBoxToLinePosition(window,styleBox,containerBox,boxPositions){var boxPosition=new BoxPosition(styleBox),cue=styleBox.cue,linePos=function(cue){if("number"==typeof cue.line&&(cue.snapToLines||cue.line>=0&&cue.line<=100))return cue.line;if(!cue.track||!cue.track.textTrackList||!cue.track.textTrackList.mediaElement)return-1;for(var track=cue.track,trackList=track.textTrackList,count=0,i=0;i<trackList.length&&trackList[i]!==track;i++)"showing"===trackList[i].mode&&count++;return-1*++count}(cue),axis=[];if(cue.snapToLines){var size;switch(cue.vertical){case"":axis=["+y","-y"],size="height";break;case"rl":axis=["+x","-x"],size="width";break;case"lr":axis=["-x","+x"],size="width"}var step=boxPosition.lineHeight,position=step*Math.round(linePos),maxPosition=containerBox[size]+step,initialAxis=axis[0];Math.abs(position)>maxPosition&&(position=position<0?-1:1,position*=Math.ceil(maxPosition/step)*step),linePos<0&&(position+=""===cue.vertical?containerBox.height:containerBox.width,axis=axis.reverse()),boxPosition.move(initialAxis,position)}else{var calculatedPercentage=boxPosition.lineHeight/containerBox.height*100;switch(cue.lineAlign){case"center":linePos-=calculatedPercentage/2;break;case"end":linePos-=calculatedPercentage}switch(cue.vertical){case"":styleBox.applyStyles({top:styleBox.formatStyle(linePos,"%")});break;case"rl":styleBox.applyStyles({left:styleBox.formatStyle(linePos,"%")});break;case"lr":styleBox.applyStyles({right:styleBox.formatStyle(linePos,"%")})}axis=["+y","-x","+x","-y"],boxPosition=new BoxPosition(styleBox)}var bestPosition=function(b,axis){for(var bestPosition,specifiedPosition=new BoxPosition(b),percentage=1,i=0;i<axis.length;i++){for(;b.overlapsOppositeAxis(containerBox,axis[i])||b.within(containerBox)&&b.overlapsAny(boxPositions);)b.move(axis[i]);if(b.within(containerBox))return b;var p=b.intersectPercentage(containerBox);percentage>p&&(bestPosition=new BoxPosition(b),percentage=p),b=new BoxPosition(specifiedPosition)}return bestPosition||specifiedPosition}(boxPosition,axis);styleBox.move(bestPosition.toCSSCompatValues(containerBox))}function WebVTT$1(){}StyleBox.prototype.applyStyles=function(styles,div){for(var prop in div=div||this.div,styles)styles.hasOwnProperty(prop)&&(div.style[prop]=styles[prop])},StyleBox.prototype.formatStyle=function(val,unit){return 0===val?0:val+unit},CueStyleBox.prototype=_objCreate(StyleBox.prototype),CueStyleBox.prototype.constructor=CueStyleBox,BoxPosition.prototype.move=function(axis,toMove){switch(toMove=void 0!==toMove?toMove:this.lineHeight,axis){case"+x":this.left+=toMove,this.right+=toMove;break;case"-x":this.left-=toMove,this.right-=toMove;break;case"+y":this.top+=toMove,this.bottom+=toMove;break;case"-y":this.top-=toMove,this.bottom-=toMove}},BoxPosition.prototype.overlaps=function(b2){return this.left<b2.right&&this.right>b2.left&&this.top<b2.bottom&&this.bottom>b2.top},BoxPosition.prototype.overlapsAny=function(boxes){for(var i=0;i<boxes.length;i++)if(this.overlaps(boxes[i]))return!0;return!1},BoxPosition.prototype.within=function(container){return this.top>=container.top&&this.bottom<=container.bottom&&this.left>=container.left&&this.right<=container.right},BoxPosition.prototype.overlapsOppositeAxis=function(container,axis){switch(axis){case"+x":return this.left<container.left;case"-x":return this.right>container.right;case"+y":return this.top<container.top;case"-y":return this.bottom>container.bottom}},BoxPosition.prototype.intersectPercentage=function(b2){return Math.max(0,Math.min(this.right,b2.right)-Math.max(this.left,b2.left))*Math.max(0,Math.min(this.bottom,b2.bottom)-Math.max(this.top,b2.top))/(this.height*this.width)},BoxPosition.prototype.toCSSCompatValues=function(reference){return{top:this.top-reference.top,bottom:reference.bottom-this.bottom,left:this.left-reference.left,right:reference.right-this.right,height:this.height,width:this.width}},BoxPosition.getSimpleBoxPosition=function(obj){var height=obj.div?obj.div.offsetHeight:obj.tagName?obj.offsetHeight:0,width=obj.div?obj.div.offsetWidth:obj.tagName?obj.offsetWidth:0,top=obj.div?obj.div.offsetTop:obj.tagName?obj.offsetTop:0;return{left:(obj=obj.div?obj.div.getBoundingClientRect():obj.tagName?obj.getBoundingClientRect():obj).left,right:obj.right,top:obj.top||top,height:obj.height||height,bottom:obj.bottom||top+(obj.height||height),width:obj.width||width}},WebVTT$1.StringDecoder=function(){return{decode:function(data){if(!data)return"";if("string"!=typeof data)throw new Error("Error - expected string data.");return decodeURIComponent(encodeURIComponent(data))}}},WebVTT$1.convertCueToDOMTree=function(window,cuetext){return window&&cuetext?parseContent(window,cuetext):null};WebVTT$1.processCues=function(window,cues,overlay){if(!window||!cues||!overlay)return null;for(;overlay.firstChild;)overlay.removeChild(overlay.firstChild);var paddedOverlay=window.document.createElement("div");if(paddedOverlay.style.position="absolute",paddedOverlay.style.left="0",paddedOverlay.style.right="0",paddedOverlay.style.top="0",paddedOverlay.style.bottom="0",paddedOverlay.style.margin="1.5%",overlay.appendChild(paddedOverlay),function(cues){for(var i=0;i<cues.length;i++)if(cues[i].hasBeenReset||!cues[i].displayState)return!0;return!1}(cues)){var boxPositions=[],containerBox=BoxPosition.getSimpleBoxPosition(paddedOverlay),styleOptions={font:Math.round(.05*containerBox.height*100)/100+"px sans-serif"};!function(){for(var styleBox,cue,i=0;i<cues.length;i++)cue=cues[i],styleBox=new CueStyleBox(window,cue,styleOptions),paddedOverlay.appendChild(styleBox.div),moveBoxToLinePosition(0,styleBox,containerBox,boxPositions),cue.displayState=styleBox.div,boxPositions.push(BoxPosition.getSimpleBoxPosition(styleBox))}()}else for(var i=0;i<cues.length;i++)paddedOverlay.appendChild(cues[i].displayState)},WebVTT$1.Parser=function(window,vttjs,decoder){decoder||(decoder=vttjs,vttjs={}),vttjs||(vttjs={}),this.window=window,this.vttjs=vttjs,this.state="INITIAL",this.buffer="",this.decoder=decoder||new TextDecoder("utf8"),this.regionList=[]},WebVTT$1.Parser.prototype={reportOrThrowError:function(e){if(!(e instanceof ParsingError))throw e;this.onparsingerror&&this.onparsingerror(e)},parse:function(data){var self=this;function collectNextLine(){for(var buffer=self.buffer,pos=0;pos<buffer.length&&"\r"!==buffer[pos]&&"\n"!==buffer[pos];)++pos;var line=buffer.substr(0,pos);return"\r"===buffer[pos]&&++pos,"\n"===buffer[pos]&&++pos,self.buffer=buffer.substr(pos),line}function parseHeader(input){input.match(/X-TIMESTAMP-MAP/)?parseOptions(input,(function(k,v){if("X-TIMESTAMP-MAP"===k)!function(input){var settings=new Settings;parseOptions(input,(function(k,v){switch(k){case"MPEGT":settings.integer(k+"S",v);break;case"LOCA":settings.set(k+"L",parseTimeStamp(v))}}),/[^\d]:/,/,/),self.ontimestampmap&&self.ontimestampmap({MPEGTS:settings.get("MPEGTS"),LOCAL:settings.get("LOCAL")})}(v)}),/=/):parseOptions(input,(function(k,v){if("Region"===k)!function(input){var settings=new Settings;if(parseOptions(input,(function(k,v){switch(k){case"id":settings.set(k,v);break;case"width":settings.percent(k,v);break;case"lines":settings.integer(k,v);break;case"regionanchor":case"viewportanchor":var xy=v.split(",");if(2!==xy.length)break;var anchor=new Settings;if(anchor.percent("x",xy[0]),anchor.percent("y",xy[1]),!anchor.has("x")||!anchor.has("y"))break;settings.set(k+"X",anchor.get("x")),settings.set(k+"Y",anchor.get("y"));break;case"scroll":settings.alt(k,v,["up"])}}),/=/,/\s/),settings.has("id")){var region=new(self.vttjs.VTTRegion||self.window.VTTRegion);region.width=settings.get("width",100),region.lines=settings.get("lines",3),region.regionAnchorX=settings.get("regionanchorX",0),region.regionAnchorY=settings.get("regionanchorY",100),region.viewportAnchorX=settings.get("viewportanchorX",0),region.viewportAnchorY=settings.get("viewportanchorY",100),region.scroll=settings.get("scroll",""),self.onregion&&self.onregion(region),self.regionList.push({id:settings.get("id"),region:region})}}(v)}),/:/)}data&&(self.buffer+=self.decoder.decode(data,{stream:!0}));try{var line;if("INITIAL"===self.state){if(!/\r\n|\n/.test(self.buffer))return this;var m=(line=collectNextLine()).match(/^WEBVTT([ \t].*)?$/);if(!m||!m[0])throw new ParsingError(ParsingError.Errors.BadSignature);self.state="HEADER"}for(var alreadyCollectedLine=!1;self.buffer;){if(!/\r\n|\n/.test(self.buffer))return this;switch(alreadyCollectedLine?alreadyCollectedLine=!1:line=collectNextLine(),self.state){case"HEADER":/:/.test(line)?parseHeader(line):line||(self.state="ID");continue;case"NOTE":line||(self.state="ID");continue;case"ID":if(/^NOTE($|[ \t])/.test(line)){self.state="NOTE";break}if(!line)continue;self.cue=new(self.vttjs.VTTCue||self.window.VTTCue)(0,0,"");try{self.cue.align="center"}catch(e){self.cue.align="middle"}if(self.state="CUE",-1===line.indexOf("--\x3e")){self.cue.id=line;continue}case"CUE":try{parseCue(line,self.cue,self.regionList)}catch(e){self.reportOrThrowError(e),self.cue=null,self.state="BADCUE";continue}self.state="CUETEXT";continue;case"CUETEXT":var hasSubstring=-1!==line.indexOf("--\x3e");if(!line||hasSubstring&&(alreadyCollectedLine=!0)){self.oncue&&self.oncue(self.cue),self.cue=null,self.state="ID";continue}self.cue.text&&(self.cue.text+="\n"),self.cue.text+=line.replace(/\u2028/g,"\n").replace(/u2029/g,"\n");continue;case"BADCUE":line||(self.state="ID");continue}}}catch(e){self.reportOrThrowError(e),"CUETEXT"===self.state&&self.cue&&self.oncue&&self.oncue(self.cue),self.cue=null,self.state="INITIAL"===self.state?"BADWEBVTT":"BADCUE"}return this},flush:function(){try{if(this.buffer+=this.decoder.decode(),(this.cue||"HEADER"===this.state)&&(this.buffer+="\n\n",this.parse()),"INITIAL"===this.state)throw new ParsingError(ParsingError.Errors.BadSignature)}catch(e){this.reportOrThrowError(e)}return this.onflush&&this.onflush(),this}};var vtt=WebVTT$1,directionSetting={"":1,lr:1,rl:1},alignSetting={start:1,center:1,end:1,left:1,right:1,auto:1,"line-left":1,"line-right":1};function findAlignSetting(value){return"string"==typeof value&&(!!alignSetting[value.toLowerCase()]&&value.toLowerCase())}function VTTCue(startTime,endTime,text){this.hasBeenReset=!1;var _id="",_pauseOnExit=!1,_startTime=startTime,_endTime=endTime,_text=text,_region=null,_vertical="",_snapToLines=!0,_line="auto",_lineAlign="start",_position="auto",_positionAlign="auto",_size=100,_align="center";Object.defineProperties(this,{id:{enumerable:!0,get:function(){return _id},set:function(value){_id=""+value}},pauseOnExit:{enumerable:!0,get:function(){return _pauseOnExit},set:function(value){_pauseOnExit=!!value}},startTime:{enumerable:!0,get:function(){return _startTime},set:function(value){if("number"!=typeof value)throw new TypeError("Start time must be set to a number.");_startTime=value,this.hasBeenReset=!0}},endTime:{enumerable:!0,get:function(){return _endTime},set:function(value){if("number"!=typeof value)throw new TypeError("End time must be set to a number.");_endTime=value,this.hasBeenReset=!0}},text:{enumerable:!0,get:function(){return _text},set:function(value){_text=""+value,this.hasBeenReset=!0}},region:{enumerable:!0,get:function(){return _region},set:function(value){_region=value,this.hasBeenReset=!0}},vertical:{enumerable:!0,get:function(){return _vertical},set:function(value){var setting=function(value){return"string"==typeof value&&!!directionSetting[value.toLowerCase()]&&value.toLowerCase()}(value);if(!1===setting)throw new SyntaxError("Vertical: an invalid or illegal direction string was specified.");_vertical=setting,this.hasBeenReset=!0}},snapToLines:{enumerable:!0,get:function(){return _snapToLines},set:function(value){_snapToLines=!!value,this.hasBeenReset=!0}},line:{enumerable:!0,get:function(){return _line},set:function(value){if("number"!=typeof value&&"auto"!==value)throw new SyntaxError("Line: an invalid number or illegal string was specified.");_line=value,this.hasBeenReset=!0}},lineAlign:{enumerable:!0,get:function(){return _lineAlign},set:function(value){var setting=findAlignSetting(value);setting?(_lineAlign=setting,this.hasBeenReset=!0):console.warn("lineAlign: an invalid or illegal string was specified.")}},position:{enumerable:!0,get:function(){return _position},set:function(value){if(value<0||value>100)throw new Error("Position must be between 0 and 100.");_position=value,this.hasBeenReset=!0}},positionAlign:{enumerable:!0,get:function(){return _positionAlign},set:function(value){var setting=findAlignSetting(value);setting?(_positionAlign=setting,this.hasBeenReset=!0):console.warn("positionAlign: an invalid or illegal string was specified.")}},size:{enumerable:!0,get:function(){return _size},set:function(value){if(value<0||value>100)throw new Error("Size must be between 0 and 100.");_size=value,this.hasBeenReset=!0}},align:{enumerable:!0,get:function(){return _align},set:function(value){var setting=findAlignSetting(value);if(!setting)throw new SyntaxError("align: an invalid or illegal alignment string was specified.");_align=setting,this.hasBeenReset=!0}}}),this.displayState=void 0}VTTCue.prototype.getCueAsHTML=function(){return WebVTT.convertCueToDOMTree(window,this.text)};var vttcue=VTTCue,scrollSetting={"":!0,up:!0};function isValidPercentValue(value){return"number"==typeof value&&value>=0&&value<=100}var vttregion=function(){var _width=100,_lines=3,_regionAnchorX=0,_regionAnchorY=100,_viewportAnchorX=0,_viewportAnchorY=100,_scroll="";Object.defineProperties(this,{width:{enumerable:!0,get:function(){return _width},set:function(value){if(!isValidPercentValue(value))throw new Error("Width must be between 0 and 100.");_width=value}},lines:{enumerable:!0,get:function(){return _lines},set:function(value){if("number"!=typeof value)throw new TypeError("Lines must be set to a number.");_lines=value}},regionAnchorY:{enumerable:!0,get:function(){return _regionAnchorY},set:function(value){if(!isValidPercentValue(value))throw new Error("RegionAnchorX must be between 0 and 100.");_regionAnchorY=value}},regionAnchorX:{enumerable:!0,get:function(){return _regionAnchorX},set:function(value){if(!isValidPercentValue(value))throw new Error("RegionAnchorY must be between 0 and 100.");_regionAnchorX=value}},viewportAnchorY:{enumerable:!0,get:function(){return _viewportAnchorY},set:function(value){if(!isValidPercentValue(value))throw new Error("ViewportAnchorY must be between 0 and 100.");_viewportAnchorY=value}},viewportAnchorX:{enumerable:!0,get:function(){return _viewportAnchorX},set:function(value){if(!isValidPercentValue(value))throw new Error("ViewportAnchorX must be between 0 and 100.");_viewportAnchorX=value}},scroll:{enumerable:!0,get:function(){return _scroll},set:function(value){var setting=function(value){return"string"==typeof value&&!!scrollSetting[value.toLowerCase()]&&value.toLowerCase()}(value);!1===setting?console.warn("Scroll: an invalid or illegal string was specified."):_scroll=setting}}})},browserIndex=createCommonjsModule((function(module){var vttjs=module.exports={WebVTT:vtt,VTTCue:vttcue,VTTRegion:vttregion};window_1.vttjs=vttjs,window_1.WebVTT=vttjs.WebVTT;var cueShim=vttjs.VTTCue,regionShim=vttjs.VTTRegion,nativeVTTCue=window_1.VTTCue,nativeVTTRegion=window_1.VTTRegion;vttjs.shim=function(){window_1.VTTCue=cueShim,window_1.VTTRegion=regionShim},vttjs.restore=function(){window_1.VTTCue=nativeVTTCue,window_1.VTTRegion=nativeVTTRegion},window_1.VTTCue||vttjs.shim()}));browserIndex.WebVTT,browserIndex.VTTCue,browserIndex.VTTRegion;class Tech extends Component$1{constructor(){let options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},ready=arguments.length>1&&void 0!==arguments[1]?arguments[1]:function(){};options.reportTouchActivity=!1,super(null,options,ready),this.onDurationChange_=e=>this.onDurationChange(e),this.trackProgress_=e=>this.trackProgress(e),this.trackCurrentTime_=e=>this.trackCurrentTime(e),this.stopTrackingCurrentTime_=e=>this.stopTrackingCurrentTime(e),this.disposeSourceHandler_=e=>this.disposeSourceHandler(e),this.queuedHanders_=new Set,this.hasStarted_=!1,this.on("playing",(function(){this.hasStarted_=!0})),this.on("loadstart",(function(){this.hasStarted_=!1})),ALL.names.forEach((name=>{const props=ALL[name];options&&options[props.getterName]&&(this[props.privateName]=options[props.getterName])})),this.featuresProgressEvents||this.manualProgressOn(),this.featuresTimeupdateEvents||this.manualTimeUpdatesOn(),["Text","Audio","Video"].forEach((track=>{!1===options["native".concat(track,"Tracks")]&&(this["featuresNative".concat(track,"Tracks")]=!1)})),!1===options.nativeCaptions||!1===options.nativeTextTracks?this.featuresNativeTextTracks=!1:!0!==options.nativeCaptions&&!0!==options.nativeTextTracks||(this.featuresNativeTextTracks=!0),this.featuresNativeTextTracks||this.emulateTextTracks(),this.preloadTextTracks=!1!==options.preloadTextTracks,this.autoRemoteTextTracks_=new ALL.text.ListClass,this.initTrackListeners(),options.nativeControlsForTouch||this.emitTapEvents(),this.constructor&&(this.name_=this.constructor.name||"Unknown Tech")}triggerSourceset(src){this.isReady_||this.one("ready",(()=>this.setTimeout((()=>this.triggerSourceset(src)),1))),this.trigger({src:src,type:"sourceset"})}manualProgressOn(){this.on("durationchange",this.onDurationChange_),this.manualProgress=!0,this.one("ready",this.trackProgress_)}manualProgressOff(){this.manualProgress=!1,this.stopTrackingProgress(),this.off("durationchange",this.onDurationChange_)}trackProgress(event){this.stopTrackingProgress(),this.progressInterval=this.setInterval(bind_(this,(function(){const numBufferedPercent=this.bufferedPercent();this.bufferedPercent_!==numBufferedPercent&&this.trigger("progress"),this.bufferedPercent_=numBufferedPercent,1===numBufferedPercent&&this.stopTrackingProgress()})),500)}onDurationChange(event){this.duration_=this.duration()}buffered(){return createTimeRanges$1(0,0)}bufferedPercent(){return bufferedPercent(this.buffered(),this.duration_)}stopTrackingProgress(){this.clearInterval(this.progressInterval)}manualTimeUpdatesOn(){this.manualTimeUpdates=!0,this.on("play",this.trackCurrentTime_),this.on("pause",this.stopTrackingCurrentTime_)}manualTimeUpdatesOff(){this.manualTimeUpdates=!1,this.stopTrackingCurrentTime(),this.off("play",this.trackCurrentTime_),this.off("pause",this.stopTrackingCurrentTime_)}trackCurrentTime(){this.currentTimeInterval&&this.stopTrackingCurrentTime(),this.currentTimeInterval=this.setInterval((function(){this.trigger({type:"timeupdate",target:this,manuallyTriggered:!0})}),250)}stopTrackingCurrentTime(){this.clearInterval(this.currentTimeInterval),this.trigger({type:"timeupdate",target:this,manuallyTriggered:!0})}dispose(){this.clearTracks(NORMAL.names),this.manualProgress&&this.manualProgressOff(),this.manualTimeUpdates&&this.manualTimeUpdatesOff(),super.dispose()}clearTracks(types){(types=[].concat(types)).forEach((type=>{const list=this["".concat(type,"Tracks")]()||[];let i=list.length;for(;i--;){const track=list[i];"text"===type&&this.removeRemoteTextTrack(track),list.removeTrack(track)}}))}cleanupAutoTextTracks(){const list=this.autoRemoteTextTracks_||[];let i=list.length;for(;i--;){const track=list[i];this.removeRemoteTextTrack(track)}}reset(){}crossOrigin(){}setCrossOrigin(){}error(err){return void 0!==err&&(this.error_=new MediaError(err),this.trigger("error")),this.error_}played(){return this.hasStarted_?createTimeRanges$1(0,0):createTimeRanges$1()}play(){}setScrubbing(_isScrubbing){}scrubbing(){}setCurrentTime(_seconds){this.manualTimeUpdates&&this.trigger({type:"timeupdate",target:this,manuallyTriggered:!0})}initTrackListeners(){NORMAL.names.forEach((name=>{const props=NORMAL[name],trackListChanges=()=>{this.trigger("".concat(name,"trackchange"))},tracks=this[props.getterName]();tracks.addEventListener("removetrack",trackListChanges),tracks.addEventListener("addtrack",trackListChanges),this.on("dispose",(()=>{tracks.removeEventListener("removetrack",trackListChanges),tracks.removeEventListener("addtrack",trackListChanges)}))}))}addWebVttScript_(){if(!window.WebVTT)if(document.body.contains(this.el())){if(!this.options_["vtt.js"]&&isPlain(browserIndex)&&Object.keys(browserIndex).length>0)return void this.trigger("vttjsloaded");const script=document.createElement("script");script.src=this.options_["vtt.js"]||"https://vjs.zencdn.net/vttjs/0.14.1/vtt.min.js",script.onload=()=>{this.trigger("vttjsloaded")},script.onerror=()=>{this.trigger("vttjserror")},this.on("dispose",(()=>{script.onload=null,script.onerror=null})),window.WebVTT=!0,this.el().parentNode.appendChild(script)}else this.ready(this.addWebVttScript_)}emulateTextTracks(){const tracks=this.textTracks(),remoteTracks=this.remoteTextTracks(),handleAddTrack=e=>tracks.addTrack(e.track),handleRemoveTrack=e=>tracks.removeTrack(e.track);remoteTracks.on("addtrack",handleAddTrack),remoteTracks.on("removetrack",handleRemoveTrack),this.addWebVttScript_();const updateDisplay=()=>this.trigger("texttrackchange"),textTracksChanges=()=>{updateDisplay();for(let i=0;i<tracks.length;i++){const track=tracks[i];track.removeEventListener("cuechange",updateDisplay),"showing"===track.mode&&track.addEventListener("cuechange",updateDisplay)}};textTracksChanges(),tracks.addEventListener("change",textTracksChanges),tracks.addEventListener("addtrack",textTracksChanges),tracks.addEventListener("removetrack",textTracksChanges),this.on("dispose",(function(){remoteTracks.off("addtrack",handleAddTrack),remoteTracks.off("removetrack",handleRemoveTrack),tracks.removeEventListener("change",textTracksChanges),tracks.removeEventListener("addtrack",textTracksChanges),tracks.removeEventListener("removetrack",textTracksChanges);for(let i=0;i<tracks.length;i++){tracks[i].removeEventListener("cuechange",updateDisplay)}}))}addTextTrack(kind,label,language){if(!kind)throw new Error("TextTrack kind is required but was not provided");return function(self,kind,label,language){let options=arguments.length>4&&void 0!==arguments[4]?arguments[4]:{};const tracks=self.textTracks();options.kind=kind,label&&(options.label=label),language&&(options.language=language),options.tech=self;const track=new ALL.text.TrackClass(options);return tracks.addTrack(track),track}(this,kind,label,language)}createRemoteTextTrack(options){const track=merge$2(options,{tech:this});return new REMOTE.remoteTextEl.TrackClass(track)}addRemoteTextTrack(){let options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},manualCleanup=arguments.length>1?arguments[1]:void 0;const htmlTrackElement=this.createRemoteTextTrack(options);return"boolean"!=typeof manualCleanup&&(manualCleanup=!1),this.remoteTextTrackEls().addTrackElement_(htmlTrackElement),this.remoteTextTracks().addTrack(htmlTrackElement.track),!1===manualCleanup&&this.ready((()=>this.autoRemoteTextTracks_.addTrack(htmlTrackElement.track))),htmlTrackElement}removeRemoteTextTrack(track){const trackElement=this.remoteTextTrackEls().getTrackElementByTrack_(track);this.remoteTextTrackEls().removeTrackElement_(trackElement),this.remoteTextTracks().removeTrack(track),this.autoRemoteTextTracks_.removeTrack(track)}getVideoPlaybackQuality(){return{}}requestPictureInPicture(){return Promise.reject()}disablePictureInPicture(){return!0}setDisablePictureInPicture(){}requestVideoFrameCallback(cb){const id=newGUID();return!this.isReady_||this.paused()?(this.queuedHanders_.add(id),this.one("playing",(()=>{this.queuedHanders_.has(id)&&(this.queuedHanders_.delete(id),cb())}))):this.requestNamedAnimationFrame(id,cb),id}cancelVideoFrameCallback(id){this.queuedHanders_.has(id)?this.queuedHanders_.delete(id):this.cancelNamedAnimationFrame(id)}setPoster(){}playsinline(){}setPlaysinline(){}overrideNativeAudioTracks(override){}overrideNativeVideoTracks(override){}canPlayType(_type){return""}static canPlayType(_type){return""}static canPlaySource(srcObj,options){return Tech.canPlayType(srcObj.type)}static isTech(component){return component.prototype instanceof Tech||component instanceof Tech||component===Tech}static registerTech(name,tech){if(Tech.techs_||(Tech.techs_={}),!Tech.isTech(tech))throw new Error("Tech ".concat(name," must be a Tech"));if(!Tech.canPlayType)throw new Error("Techs must have a static canPlayType method on them");if(!Tech.canPlaySource)throw new Error("Techs must have a static canPlaySource method on them");return name=toTitleCase$1(name),Tech.techs_[name]=tech,Tech.techs_[toLowerCase(name)]=tech,"Tech"!==name&&Tech.defaultTechOrder_.push(name),tech}static getTech(name){if(name)return Tech.techs_&&Tech.techs_[name]?Tech.techs_[name]:(name=toTitleCase$1(name),window&&window.videojs&&window.videojs[name]?(log$1.warn("The ".concat(name," tech was added to the videojs object when it should be registered using videojs.registerTech(name, tech)")),window.videojs[name]):void 0)}}ALL.names.forEach((function(name){const props=ALL[name];Tech.prototype[props.getterName]=function(){return this[props.privateName]=this[props.privateName]||new props.ListClass,this[props.privateName]}})),Tech.prototype.featuresVolumeControl=!0,Tech.prototype.featuresMuteControl=!0,Tech.prototype.featuresFullscreenResize=!1,Tech.prototype.featuresPlaybackRate=!1,Tech.prototype.featuresProgressEvents=!1,Tech.prototype.featuresSourceset=!1,Tech.prototype.featuresTimeupdateEvents=!1,Tech.prototype.featuresNativeTextTracks=!1,Tech.prototype.featuresVideoFrameCallback=!1,Tech.withSourceHandlers=function(_Tech){_Tech.registerSourceHandler=function(handler,index){let handlers=_Tech.sourceHandlers;handlers||(handlers=_Tech.sourceHandlers=[]),void 0===index&&(index=handlers.length),handlers.splice(index,0,handler)},_Tech.canPlayType=function(type){const handlers=_Tech.sourceHandlers||[];let can;for(let i=0;i<handlers.length;i++)if(can=handlers[i].canPlayType(type),can)return can;return""},_Tech.selectSourceHandler=function(source,options){const handlers=_Tech.sourceHandlers||[];let can;for(let i=0;i<handlers.length;i++)if(can=handlers[i].canHandleSource(source,options),can)return handlers[i];return null},_Tech.canPlaySource=function(srcObj,options){const sh=_Tech.selectSourceHandler(srcObj,options);return sh?sh.canHandleSource(srcObj,options):""};["seekable","seeking","duration"].forEach((function(fnName){const originalFn=this[fnName];"function"==typeof originalFn&&(this[fnName]=function(){return this.sourceHandler_&&this.sourceHandler_[fnName]?this.sourceHandler_[fnName].apply(this.sourceHandler_,arguments):originalFn.apply(this,arguments)})}),_Tech.prototype),_Tech.prototype.setSource=function(source){let sh=_Tech.selectSourceHandler(source,this.options_);sh||(_Tech.nativeSourceHandler?sh=_Tech.nativeSourceHandler:log$1.error("No source handler found for the current source.")),this.disposeSourceHandler(),this.off("dispose",this.disposeSourceHandler_),sh!==_Tech.nativeSourceHandler&&(this.currentSource_=source),this.sourceHandler_=sh.handleSource(source,this,this.options_),this.one("dispose",this.disposeSourceHandler_)},_Tech.prototype.disposeSourceHandler=function(){this.currentSource_&&(this.clearTracks(["audio","video"]),this.currentSource_=null),this.cleanupAutoTextTracks(),this.sourceHandler_&&(this.sourceHandler_.dispose&&this.sourceHandler_.dispose(),this.sourceHandler_=null)}},Component$1.registerComponent("Tech",Tech),Tech.registerTech("Tech",Tech),Tech.defaultTechOrder_=[];const middlewares={},middlewareInstances={},TERMINATOR={};function setSource(player,src,next){player.setTimeout((()=>setSourceHelper(src,middlewares[src.type],next,player)),1)}function mediate(middleware,tech,method){let arg=arguments.length>3&&void 0!==arguments[3]?arguments[3]:null;const callMethod="call"+toTitleCase$1(method),middlewareValue=middleware.reduce(middlewareIterator(callMethod),arg),terminated=middlewareValue===TERMINATOR,returnValue=terminated?null:tech[method](middlewareValue);return executeRight(middleware,method,returnValue,terminated),returnValue}const allowedGetters={buffered:1,currentTime:1,duration:1,muted:1,played:1,paused:1,seekable:1,volume:1,ended:1},allowedSetters={setCurrentTime:1,setMuted:1,setVolume:1},allowedMediators={play:1,pause:1};function middlewareIterator(method){return(value,mw)=>value===TERMINATOR?TERMINATOR:mw[method]?mw[method](value):value}function executeRight(mws,method,value,terminated){for(let i=mws.length-1;i>=0;i--){const mw=mws[i];mw[method]&&mw[method](terminated,value)}}function getOrCreateFactory(player,mwFactory){const mws=middlewareInstances[player.id()];let mw=null;if(null==mws)return mw=mwFactory(player),middlewareInstances[player.id()]=[[mwFactory,mw]],mw;for(let i=0;i<mws.length;i++){const[mwf,mwi]=mws[i];mwf===mwFactory&&(mw=mwi)}return null===mw&&(mw=mwFactory(player),mws.push([mwFactory,mw])),mw}function setSourceHelper(){let src=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},middleware=arguments.length>1&&void 0!==arguments[1]?arguments[1]:[],next=arguments.length>2?arguments[2]:void 0,player=arguments.length>3?arguments[3]:void 0,acc=arguments.length>4&&void 0!==arguments[4]?arguments[4]:[],lastRun=arguments.length>5&&void 0!==arguments[5]&&arguments[5];const[mwFactory,...mwrest]=middleware;if("string"==typeof mwFactory)setSourceHelper(src,middlewares[mwFactory],next,player,acc,lastRun);else if(mwFactory){const mw=getOrCreateFactory(player,mwFactory);if(!mw.setSource)return acc.push(mw),setSourceHelper(src,mwrest,next,player,acc,lastRun);mw.setSource(Object.assign({},src),(function(err,_src){if(err)return setSourceHelper(src,mwrest,next,player,acc,lastRun);acc.push(mw),setSourceHelper(_src,src.type===_src.type?mwrest:middlewares[_src.type],next,player,acc,lastRun)}))}else mwrest.length?setSourceHelper(src,mwrest,next,player,acc,lastRun):lastRun?next(src,acc):setSourceHelper(src,middlewares["*"],next,player,acc,!0)}const MimetypesKind={opus:"video/ogg",ogv:"video/ogg",mp4:"video/mp4",mov:"video/mp4",m4v:"video/mp4",mkv:"video/x-matroska",m4a:"audio/mp4",mp3:"audio/mpeg",aac:"audio/aac",caf:"audio/x-caf",flac:"audio/flac",oga:"audio/ogg",wav:"audio/wav",m3u8:"application/x-mpegURL",mpd:"application/dash+xml",jpg:"image/jpeg",jpeg:"image/jpeg",gif:"image/gif",png:"image/png",svg:"image/svg+xml",webp:"image/webp"},getMimetype=function(){let src=arguments.length>0&&void 0!==arguments[0]?arguments[0]:"";const ext=getFileExtension(src),mimetype=MimetypesKind[ext.toLowerCase()];return mimetype||""},filterSource=function(src){if(Array.isArray(src)){let newsrc=[];src.forEach((function(srcobj){srcobj=filterSource(srcobj),Array.isArray(srcobj)?newsrc=newsrc.concat(srcobj):isObject$1(srcobj)&&newsrc.push(srcobj)})),src=newsrc}else src="string"==typeof src&&src.trim()?[fixSource({src:src})]:isObject$1(src)&&"string"==typeof src.src&&src.src&&src.src.trim()?[fixSource(src)]:[];return src};function fixSource(src){if(!src.type){const mimetype=getMimetype(src.src);mimetype&&(src.type=mimetype)}return src}Component$1.registerComponent("MediaLoader",class extends Component$1{constructor(player,options,ready){if(super(player,merge$2({createEl:!1},options),ready),options.playerOptions.sources&&0!==options.playerOptions.sources.length)player.src(options.playerOptions.sources);else for(let i=0,j=options.playerOptions.techOrder;i<j.length;i++){const techName=toTitleCase$1(j[i]);let tech=Tech.getTech(techName);if(techName||(tech=Component$1.getComponent(techName)),tech&&tech.isSupported()){player.loadTech_(techName);break}}}});class ClickableComponent extends Component$1{constructor(player,options){super(player,options),this.options_.controlText&&this.controlText(this.options_.controlText),this.handleMouseOver_=e=>this.handleMouseOver(e),this.handleMouseOut_=e=>this.handleMouseOut(e),this.handleClick_=e=>this.handleClick(e),this.handleKeyDown_=e=>this.handleKeyDown(e),this.emitTapEvents(),this.enable()}createEl(){let tag=arguments.length>0&&void 0!==arguments[0]?arguments[0]:"div",props=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},attributes=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};props=Object.assign({className:this.buildCSSClass(),tabIndex:0},props),"button"===tag&&log$1.error("Creating a ClickableComponent with an HTML element of ".concat(tag," is not supported; use a Button instead.")),attributes=Object.assign({role:"button"},attributes),this.tabIndex_=props.tabIndex;const el=createEl(tag,props,attributes);return el.appendChild(createEl("span",{className:"vjs-icon-placeholder"},{"aria-hidden":!0})),this.createControlTextEl(el),el}dispose(){this.controlTextEl_=null,super.dispose()}createControlTextEl(el){return this.controlTextEl_=createEl("span",{className:"vjs-control-text"},{"aria-live":"polite"}),el&&el.appendChild(this.controlTextEl_),this.controlText(this.controlText_,el),this.controlTextEl_}controlText(text){let el=arguments.length>1&&void 0!==arguments[1]?arguments[1]:this.el();if(void 0===text)return this.controlText_||"Need Text";const localizedText=this.localize(text);this.controlText_=text,textContent(this.controlTextEl_,localizedText),this.nonIconControl||this.player_.options_.noUITitleAttributes||el.setAttribute("title",localizedText)}buildCSSClass(){return"vjs-control vjs-button ".concat(super.buildCSSClass())}enable(){this.enabled_||(this.enabled_=!0,this.removeClass("vjs-disabled"),this.el_.setAttribute("aria-disabled","false"),void 0!==this.tabIndex_&&this.el_.setAttribute("tabIndex",this.tabIndex_),this.on(["tap","click"],this.handleClick_),this.on("keydown",this.handleKeyDown_))}disable(){this.enabled_=!1,this.addClass("vjs-disabled"),this.el_.setAttribute("aria-disabled","true"),void 0!==this.tabIndex_&&this.el_.removeAttribute("tabIndex"),this.off("mouseover",this.handleMouseOver_),this.off("mouseout",this.handleMouseOut_),this.off(["tap","click"],this.handleClick_),this.off("keydown",this.handleKeyDown_)}handleLanguagechange(){this.controlText(this.controlText_)}handleClick(event){this.options_.clickHandler&&this.options_.clickHandler.call(this,arguments)}handleKeyDown(event){keycode.isEventKey(event,"Space")||keycode.isEventKey(event,"Enter")?(event.preventDefault(),event.stopPropagation(),this.trigger("click")):super.handleKeyDown(event)}}Component$1.registerComponent("ClickableComponent",ClickableComponent);class PosterImage extends ClickableComponent{constructor(player,options){super(player,options),this.update(),this.update_=e=>this.update(e),player.on("posterchange",this.update_)}dispose(){this.player().off("posterchange",this.update_),super.dispose()}createEl(){return createEl("div",{className:"vjs-poster"})}crossOrigin(value){if(void 0===value)return this.$("img")?this.$("img").crossOrigin:this.player_.tech_&&this.player_.tech_.isReady_?this.player_.crossOrigin():this.player_.options_.crossOrigin||this.player_.options_.crossorigin||null;null===value||"anonymous"===value||"use-credentials"===value?this.$("img")&&(this.$("img").crossOrigin=value):this.player_.log.warn('crossOrigin must be null,  "anonymous" or "use-credentials", given "'.concat(value,'"'))}update(event){const url=this.player().poster();this.setSrc(url),url?this.show():this.hide()}setSrc(url){url?(this.$("img")||this.el_.appendChild(createEl("picture",{className:"vjs-poster",tabIndex:-1},{},createEl("img",{loading:"lazy",crossOrigin:this.crossOrigin()},{alt:""}))),this.$("img").src=url):this.el_.textContent=""}handleClick(event){this.player_.controls()&&(this.player_.tech(!0)&&this.player_.tech(!0).focus(),this.player_.paused()?silencePromise(this.player_.play()):this.player_.pause())}}PosterImage.prototype.crossorigin=PosterImage.prototype.crossOrigin,Component$1.registerComponent("PosterImage",PosterImage);const fontMap={monospace:"monospace",sansSerif:"sans-serif",serif:"serif",monospaceSansSerif:'"Andale Mono", "Lucida Console", monospace',monospaceSerif:'"Courier New", monospace',proportionalSansSerif:"sans-serif",proportionalSerif:"serif",casual:'"Comic Sans MS", Impact, fantasy',script:'"Monotype Corsiva", cursive',smallcaps:'"Andale Mono", "Lucida Console", monospace, sans-serif'};function constructColor(color,opacity){let hex;if(4===color.length)hex=color[1]+color[1]+color[2]+color[2]+color[3]+color[3];else{if(7!==color.length)throw new Error("Invalid color code provided, "+color+"; must be formatted as e.g. #f0e or #f604e2.");hex=color.slice(1)}return"rgba("+parseInt(hex.slice(0,2),16)+","+parseInt(hex.slice(2,4),16)+","+parseInt(hex.slice(4,6),16)+","+opacity+")"}function tryUpdateStyle(el,style,rule){try{el.style[style]=rule}catch(e){return}}Component$1.registerComponent("TextTrackDisplay",class extends Component$1{constructor(player,options,ready){super(player,options,ready);const updateDisplayHandler=e=>this.updateDisplay(e);player.on("loadstart",(e=>this.toggleDisplay(e))),player.on("texttrackchange",updateDisplayHandler),player.on("loadedmetadata",(e=>this.preselectTrack(e))),player.ready(bind_(this,(function(){if(player.tech_&&player.tech_.featuresNativeTextTracks)return void this.hide();player.on("fullscreenchange",updateDisplayHandler),player.on("playerresize",updateDisplayHandler);const screenOrientation=window.screen.orientation||window,changeOrientationEvent=window.screen.orientation?"change":"orientationchange";screenOrientation.addEventListener(changeOrientationEvent,updateDisplayHandler),player.on("dispose",(()=>screenOrientation.removeEventListener(changeOrientationEvent,updateDisplayHandler)));const tracks=this.options_.playerOptions.tracks||[];for(let i=0;i<tracks.length;i++)this.player_.addRemoteTextTrack(tracks[i],!0);this.preselectTrack()})))}preselectTrack(){const modes={captions:1,subtitles:1},trackList=this.player_.textTracks(),userPref=this.player_.cache_.selectedLanguage;let firstDesc,firstCaptions,preferredTrack;for(let i=0;i<trackList.length;i++){const track=trackList[i];userPref&&userPref.enabled&&userPref.language&&userPref.language===track.language&&track.kind in modes?track.kind===userPref.kind?preferredTrack=track:preferredTrack||(preferredTrack=track):userPref&&!userPref.enabled?(preferredTrack=null,firstDesc=null,firstCaptions=null):track.default&&("descriptions"!==track.kind||firstDesc?track.kind in modes&&!firstCaptions&&(firstCaptions=track):firstDesc=track)}preferredTrack?preferredTrack.mode="showing":firstCaptions?firstCaptions.mode="showing":firstDesc&&(firstDesc.mode="showing")}toggleDisplay(){this.player_.tech_&&this.player_.tech_.featuresNativeTextTracks?this.hide():this.show()}createEl(){return super.createEl("div",{className:"vjs-text-track-display"},{translate:"yes","aria-live":"off","aria-atomic":"true"})}clearDisplay(){"function"==typeof window.WebVTT&&window.WebVTT.processCues(window,[],this.el_)}updateDisplay(){const tracks=this.player_.textTracks(),allowMultipleShowingTracks=this.options_.allowMultipleShowingTracks;if(this.clearDisplay(),allowMultipleShowingTracks){const showingTracks=[];for(let i=0;i<tracks.length;++i){const track=tracks[i];"showing"===track.mode&&showingTracks.push(track)}return void this.updateForTrack(showingTracks)}let descriptionsTrack=null,captionsSubtitlesTrack=null,i=tracks.length;for(;i--;){const track=tracks[i];"showing"===track.mode&&("descriptions"===track.kind?descriptionsTrack=track:captionsSubtitlesTrack=track)}captionsSubtitlesTrack?("off"!==this.getAttribute("aria-live")&&this.setAttribute("aria-live","off"),this.updateForTrack(captionsSubtitlesTrack)):descriptionsTrack&&("assertive"!==this.getAttribute("aria-live")&&this.setAttribute("aria-live","assertive"),this.updateForTrack(descriptionsTrack))}updateDisplayState(track){const overrides=this.player_.textTrackSettings.getValues(),cues=track.activeCues;let i=cues.length;for(;i--;){const cue=cues[i];if(!cue)continue;const cueDiv=cue.displayState;if(overrides.color&&(cueDiv.firstChild.style.color=overrides.color),overrides.textOpacity&&tryUpdateStyle(cueDiv.firstChild,"color",constructColor(overrides.color||"#fff",overrides.textOpacity)),overrides.backgroundColor&&(cueDiv.firstChild.style.backgroundColor=overrides.backgroundColor),overrides.backgroundOpacity&&tryUpdateStyle(cueDiv.firstChild,"backgroundColor",constructColor(overrides.backgroundColor||"#000",overrides.backgroundOpacity)),overrides.windowColor&&(overrides.windowOpacity?tryUpdateStyle(cueDiv,"backgroundColor",constructColor(overrides.windowColor,overrides.windowOpacity)):cueDiv.style.backgroundColor=overrides.windowColor),overrides.edgeStyle&&("dropshadow"===overrides.edgeStyle?cueDiv.firstChild.style.textShadow="2px 2px 3px ".concat("#222",", 2px 2px 4px ").concat("#222",", 2px 2px 5px ").concat("#222"):"raised"===overrides.edgeStyle?cueDiv.firstChild.style.textShadow="1px 1px ".concat("#222",", 2px 2px ").concat("#222",", 3px 3px ").concat("#222"):"depressed"===overrides.edgeStyle?cueDiv.firstChild.style.textShadow="1px 1px ".concat("#ccc",", 0 1px ").concat("#ccc",", -1px -1px ").concat("#222",", 0 -1px ").concat("#222"):"uniform"===overrides.edgeStyle&&(cueDiv.firstChild.style.textShadow="0 0 4px ".concat("#222",", 0 0 4px ").concat("#222",", 0 0 4px ").concat("#222",", 0 0 4px ").concat("#222"))),overrides.fontPercent&&1!==overrides.fontPercent){const fontSize=window.parseFloat(cueDiv.style.fontSize);cueDiv.style.fontSize=fontSize*overrides.fontPercent+"px",cueDiv.style.height="auto",cueDiv.style.top="auto"}overrides.fontFamily&&"default"!==overrides.fontFamily&&("small-caps"===overrides.fontFamily?cueDiv.firstChild.style.fontVariant="small-caps":cueDiv.firstChild.style.fontFamily=fontMap[overrides.fontFamily])}}updateForTrack(tracks){if(Array.isArray(tracks)||(tracks=[tracks]),"function"!=typeof window.WebVTT||tracks.every((track=>!track.activeCues)))return;const cues=[];for(let i=0;i<tracks.length;++i){const track=tracks[i];for(let j=0;j<track.activeCues.length;++j)cues.push(track.activeCues[j])}window.WebVTT.processCues(window,cues,this.el_);for(let i=0;i<tracks.length;++i){const track=tracks[i];for(let j=0;j<track.activeCues.length;++j){const cueEl=track.activeCues[j].displayState;addClass(cueEl,"vjs-text-track-cue","vjs-text-track-cue-"+(track.language?track.language:i)),track.language&&setAttribute(cueEl,"lang",track.language)}this.player_.textTrackSettings&&this.updateDisplayState(track)}}});Component$1.registerComponent("LoadingSpinner",class extends Component$1{createEl(){const isAudio=this.player_.isAudio(),playerType=this.localize(isAudio?"Audio Player":"Video Player"),controlText=createEl("span",{className:"vjs-control-text",textContent:this.localize("{1} is loading.",[playerType])}),el=super.createEl("div",{className:"vjs-loading-spinner",dir:"ltr"});return el.appendChild(controlText),el}handleLanguagechange(){this.$(".vjs-control-text").textContent=this.localize("{1} is loading.",[this.player_.isAudio()?"Audio Player":"Video Player"])}});class Button extends ClickableComponent{createEl(tag){let props=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},attributes=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};tag="button",props=Object.assign({className:this.buildCSSClass()},props),attributes=Object.assign({type:"button"},attributes);const el=createEl("button",props,attributes);return el.appendChild(createEl("span",{className:"vjs-icon-placeholder"},{"aria-hidden":!0})),this.createControlTextEl(el),el}addChild(child){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};const className=this.constructor.name;return log$1.warn("Adding an actionable (user controllable) child to a Button (".concat(className,") is not supported; use a ClickableComponent instead.")),Component$1.prototype.addChild.call(this,child,options)}enable(){super.enable(),this.el_.removeAttribute("disabled")}disable(){super.disable(),this.el_.setAttribute("disabled","disabled")}handleKeyDown(event){keycode.isEventKey(event,"Space")||keycode.isEventKey(event,"Enter")?event.stopPropagation():super.handleKeyDown(event)}}Component$1.registerComponent("Button",Button);class BigPlayButton extends Button{constructor(player,options){super(player,options),this.mouseused_=!1,this.on("mousedown",(e=>this.handleMouseDown(e)))}buildCSSClass(){return"vjs-big-play-button"}handleClick(event){const playPromise=this.player_.play();if(this.mouseused_&&event.clientX&&event.clientY)return silencePromise(playPromise),void(this.player_.tech(!0)&&this.player_.tech(!0).focus());const cb=this.player_.getChild("controlBar"),playToggle=cb&&cb.getChild("playToggle");if(!playToggle)return void this.player_.tech(!0).focus();const playFocus=()=>playToggle.focus();isPromise(playPromise)?playPromise.then(playFocus,(()=>{})):this.setTimeout(playFocus,1)}handleKeyDown(event){this.mouseused_=!1,super.handleKeyDown(event)}handleMouseDown(event){this.mouseused_=!0}}BigPlayButton.prototype.controlText_="Play Video",Component$1.registerComponent("BigPlayButton",BigPlayButton);Component$1.registerComponent("CloseButton",class extends Button{constructor(player,options){super(player,options),this.controlText(options&&options.controlText||this.localize("Close"))}buildCSSClass(){return"vjs-close-button ".concat(super.buildCSSClass())}handleClick(event){this.trigger({type:"close",bubbles:!1})}handleKeyDown(event){keycode.isEventKey(event,"Esc")?(event.preventDefault(),event.stopPropagation(),this.trigger("click")):super.handleKeyDown(event)}});class PlayToggle extends Button{constructor(player){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};super(player,options),options.replay=void 0===options.replay||options.replay,this.on(player,"play",(e=>this.handlePlay(e))),this.on(player,"pause",(e=>this.handlePause(e))),options.replay&&this.on(player,"ended",(e=>this.handleEnded(e)))}buildCSSClass(){return"vjs-play-control ".concat(super.buildCSSClass())}handleClick(event){this.player_.paused()?silencePromise(this.player_.play()):this.player_.pause()}handleSeeked(event){this.removeClass("vjs-ended"),this.player_.paused()?this.handlePause(event):this.handlePlay(event)}handlePlay(event){this.removeClass("vjs-ended","vjs-paused"),this.addClass("vjs-playing"),this.controlText("Pause")}handlePause(event){this.removeClass("vjs-playing"),this.addClass("vjs-paused"),this.controlText("Play")}handleEnded(event){this.removeClass("vjs-playing"),this.addClass("vjs-ended"),this.controlText("Replay"),this.one(this.player_,"seeked",(e=>this.handleSeeked(e)))}}PlayToggle.prototype.controlText_="Play",Component$1.registerComponent("PlayToggle",PlayToggle);class TimeDisplay extends Component$1{constructor(player,options){super(player,options),this.on(player,["timeupdate","ended"],(e=>this.updateContent(e))),this.updateTextNode_()}createEl(){const className=this.buildCSSClass(),el=super.createEl("div",{className:"".concat(className," vjs-time-control vjs-control")}),span=createEl("span",{className:"vjs-control-text",textContent:"".concat(this.localize(this.labelText_)," ")},{role:"presentation"});return el.appendChild(span),this.contentEl_=createEl("span",{className:"".concat(className,"-display")},{role:"presentation"}),el.appendChild(this.contentEl_),el}dispose(){this.contentEl_=null,this.textNode_=null,super.dispose()}updateTextNode_(){let time=arguments.length>0&&void 0!==arguments[0]?arguments[0]:0;time=formatTime(time),this.formattedTime_!==time&&(this.formattedTime_=time,this.requestNamedAnimationFrame("TimeDisplay#updateTextNode_",(()=>{if(!this.contentEl_)return;let oldNode=this.textNode_;oldNode&&this.contentEl_.firstChild!==oldNode&&(oldNode=null,log$1.warn("TimeDisplay#updateTextnode_: Prevented replacement of text node element since it was no longer a child of this node. Appending a new node instead.")),this.textNode_=document.createTextNode(this.formattedTime_),this.textNode_&&(oldNode?this.contentEl_.replaceChild(this.textNode_,oldNode):this.contentEl_.appendChild(this.textNode_))})))}updateContent(event){}}TimeDisplay.prototype.labelText_="Time",TimeDisplay.prototype.controlText_="Time",Component$1.registerComponent("TimeDisplay",TimeDisplay);class CurrentTimeDisplay extends TimeDisplay{buildCSSClass(){return"vjs-current-time"}updateContent(event){let time;time=this.player_.ended()?this.player_.duration():this.player_.scrubbing()?this.player_.getCache().currentTime:this.player_.currentTime(),this.updateTextNode_(time)}}CurrentTimeDisplay.prototype.labelText_="Current Time",CurrentTimeDisplay.prototype.controlText_="Current Time",Component$1.registerComponent("CurrentTimeDisplay",CurrentTimeDisplay);class DurationDisplay extends TimeDisplay{constructor(player,options){super(player,options);const updateContent=e=>this.updateContent(e);this.on(player,"durationchange",updateContent),this.on(player,"loadstart",updateContent),this.on(player,"loadedmetadata",updateContent)}buildCSSClass(){return"vjs-duration"}updateContent(event){const duration=this.player_.duration();this.updateTextNode_(duration)}}DurationDisplay.prototype.labelText_="Duration",DurationDisplay.prototype.controlText_="Duration",Component$1.registerComponent("DurationDisplay",DurationDisplay);Component$1.registerComponent("TimeDivider",class extends Component$1{createEl(){const el=super.createEl("div",{className:"vjs-time-control vjs-time-divider"},{"aria-hidden":!0}),div=super.createEl("div"),span=super.createEl("span",{textContent:"/"});return div.appendChild(span),el.appendChild(div),el}});class RemainingTimeDisplay extends TimeDisplay{constructor(player,options){super(player,options),this.on(player,"durationchange",(e=>this.updateContent(e)))}buildCSSClass(){return"vjs-remaining-time"}createEl(){const el=super.createEl();return!1!==this.options_.displayNegative&&el.insertBefore(createEl("span",{},{"aria-hidden":!0},"-"),this.contentEl_),el}updateContent(event){if("number"!=typeof this.player_.duration())return;let time;time=this.player_.ended()?0:this.player_.remainingTimeDisplay?this.player_.remainingTimeDisplay():this.player_.remainingTime(),this.updateTextNode_(time)}}RemainingTimeDisplay.prototype.labelText_="Remaining Time",RemainingTimeDisplay.prototype.controlText_="Remaining Time",Component$1.registerComponent("RemainingTimeDisplay",RemainingTimeDisplay);Component$1.registerComponent("LiveDisplay",class extends Component$1{constructor(player,options){super(player,options),this.updateShowing(),this.on(this.player(),"durationchange",(e=>this.updateShowing(e)))}createEl(){const el=super.createEl("div",{className:"vjs-live-control vjs-control"});return this.contentEl_=createEl("div",{className:"vjs-live-display"},{"aria-live":"off"}),this.contentEl_.appendChild(createEl("span",{className:"vjs-control-text",textContent:"".concat(this.localize("Stream Type")," ")})),this.contentEl_.appendChild(document.createTextNode(this.localize("LIVE"))),el.appendChild(this.contentEl_),el}dispose(){this.contentEl_=null,super.dispose()}updateShowing(event){this.player().duration()===1/0?this.show():this.hide()}});class SeekToLive extends Button{constructor(player,options){super(player,options),this.updateLiveEdgeStatus(),this.player_.liveTracker&&(this.updateLiveEdgeStatusHandler_=e=>this.updateLiveEdgeStatus(e),this.on(this.player_.liveTracker,"liveedgechange",this.updateLiveEdgeStatusHandler_))}createEl(){const el=super.createEl("button",{className:"vjs-seek-to-live-control vjs-control"});return this.textEl_=createEl("span",{className:"vjs-seek-to-live-text",textContent:this.localize("LIVE")},{"aria-hidden":"true"}),el.appendChild(this.textEl_),el}updateLiveEdgeStatus(){!this.player_.liveTracker||this.player_.liveTracker.atLiveEdge()?(this.setAttribute("aria-disabled",!0),this.addClass("vjs-at-live-edge"),this.controlText("Seek to live, currently playing live")):(this.setAttribute("aria-disabled",!1),this.removeClass("vjs-at-live-edge"),this.controlText("Seek to live, currently behind live"))}handleClick(){this.player_.liveTracker.seekToLiveEdge()}dispose(){this.player_.liveTracker&&this.off(this.player_.liveTracker,"liveedgechange",this.updateLiveEdgeStatusHandler_),this.textEl_=null,super.dispose()}}function clamp(number,min,max){return number=Number(number),Math.min(max,Math.max(min,isNaN(number)?min:number))}SeekToLive.prototype.controlText_="Seek to live, currently playing live",Component$1.registerComponent("SeekToLive",SeekToLive);var Num=Object.freeze({__proto__:null,clamp:clamp});class Slider extends Component$1{constructor(player,options){super(player,options),this.handleMouseDown_=e=>this.handleMouseDown(e),this.handleMouseUp_=e=>this.handleMouseUp(e),this.handleKeyDown_=e=>this.handleKeyDown(e),this.handleClick_=e=>this.handleClick(e),this.handleMouseMove_=e=>this.handleMouseMove(e),this.update_=e=>this.update(e),this.bar=this.getChild(this.options_.barName),this.vertical(!!this.options_.vertical),this.enable()}enabled(){return this.enabled_}enable(){this.enabled()||(this.on("mousedown",this.handleMouseDown_),this.on("touchstart",this.handleMouseDown_),this.on("keydown",this.handleKeyDown_),this.on("click",this.handleClick_),this.on(this.player_,"controlsvisible",this.update),this.playerEvent&&this.on(this.player_,this.playerEvent,this.update),this.removeClass("disabled"),this.setAttribute("tabindex",0),this.enabled_=!0)}disable(){if(!this.enabled())return;const doc=this.bar.el_.ownerDocument;this.off("mousedown",this.handleMouseDown_),this.off("touchstart",this.handleMouseDown_),this.off("keydown",this.handleKeyDown_),this.off("click",this.handleClick_),this.off(this.player_,"controlsvisible",this.update_),this.off(doc,"mousemove",this.handleMouseMove_),this.off(doc,"mouseup",this.handleMouseUp_),this.off(doc,"touchmove",this.handleMouseMove_),this.off(doc,"touchend",this.handleMouseUp_),this.removeAttribute("tabindex"),this.addClass("disabled"),this.playerEvent&&this.off(this.player_,this.playerEvent,this.update),this.enabled_=!1}createEl(type){let props=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},attributes=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};return props.className=props.className+" vjs-slider",props=Object.assign({tabIndex:0},props),attributes=Object.assign({role:"slider","aria-valuenow":0,"aria-valuemin":0,"aria-valuemax":100},attributes),super.createEl(type,props,attributes)}handleMouseDown(event){const doc=this.bar.el_.ownerDocument;"mousedown"===event.type&&event.preventDefault(),"touchstart"!==event.type||IS_CHROME||event.preventDefault(),blockTextSelection(),this.addClass("vjs-sliding"),this.trigger("slideractive"),this.on(doc,"mousemove",this.handleMouseMove_),this.on(doc,"mouseup",this.handleMouseUp_),this.on(doc,"touchmove",this.handleMouseMove_),this.on(doc,"touchend",this.handleMouseUp_),this.handleMouseMove(event,!0)}handleMouseMove(event){}handleMouseUp(event){const doc=this.bar.el_.ownerDocument;unblockTextSelection(),this.removeClass("vjs-sliding"),this.trigger("sliderinactive"),this.off(doc,"mousemove",this.handleMouseMove_),this.off(doc,"mouseup",this.handleMouseUp_),this.off(doc,"touchmove",this.handleMouseMove_),this.off(doc,"touchend",this.handleMouseUp_),this.update()}update(){if(!this.el_||!this.bar)return;const progress=this.getProgress();return progress===this.progress_||(this.progress_=progress,this.requestNamedAnimationFrame("Slider#update",(()=>{const sizeKey=this.vertical()?"height":"width";this.bar.el().style[sizeKey]=(100*progress).toFixed(2)+"%"}))),progress}getProgress(){return Number(clamp(this.getPercent(),0,1).toFixed(4))}calculateDistance(event){const position=getPointerPosition(this.el_,event);return this.vertical()?position.y:position.x}handleKeyDown(event){keycode.isEventKey(event,"Left")||keycode.isEventKey(event,"Down")?(event.preventDefault(),event.stopPropagation(),this.stepBack()):keycode.isEventKey(event,"Right")||keycode.isEventKey(event,"Up")?(event.preventDefault(),event.stopPropagation(),this.stepForward()):super.handleKeyDown(event)}handleClick(event){event.stopPropagation(),event.preventDefault()}vertical(bool){if(void 0===bool)return this.vertical_||!1;this.vertical_=!!bool,this.vertical_?this.addClass("vjs-slider-vertical"):this.addClass("vjs-slider-horizontal")}}Component$1.registerComponent("Slider",Slider);const percentify=(time,end)=>clamp(time/end*100,0,100).toFixed(2)+"%";Component$1.registerComponent("LoadProgressBar",class extends Component$1{constructor(player,options){super(player,options),this.partEls_=[],this.on(player,"progress",(e=>this.update(e)))}createEl(){const el=super.createEl("div",{className:"vjs-load-progress"}),wrapper=createEl("span",{className:"vjs-control-text"}),loadedText=createEl("span",{textContent:this.localize("Loaded")}),separator=document.createTextNode(": ");return this.percentageEl_=createEl("span",{className:"vjs-control-text-loaded-percentage",textContent:"0%"}),el.appendChild(wrapper),wrapper.appendChild(loadedText),wrapper.appendChild(separator),wrapper.appendChild(this.percentageEl_),el}dispose(){this.partEls_=null,this.percentageEl_=null,super.dispose()}update(event){this.requestNamedAnimationFrame("LoadProgressBar#update",(()=>{const liveTracker=this.player_.liveTracker,buffered=this.player_.buffered(),duration=liveTracker&&liveTracker.isLive()?liveTracker.seekableEnd():this.player_.duration(),bufferedEnd=this.player_.bufferedEnd(),children=this.partEls_,percent=percentify(bufferedEnd,duration);this.percent_!==percent&&(this.el_.style.width=percent,textContent(this.percentageEl_,percent),this.percent_=percent);for(let i=0;i<buffered.length;i++){const start=buffered.start(i),end=buffered.end(i);let part=children[i];part||(part=this.el_.appendChild(createEl()),children[i]=part),part.dataset.start===start&&part.dataset.end===end||(part.dataset.start=start,part.dataset.end=end,part.style.left=percentify(start,bufferedEnd),part.style.width=percentify(end-start,bufferedEnd))}for(let i=children.length;i>buffered.length;i--)this.el_.removeChild(children[i-1]);children.length=buffered.length}))}});Component$1.registerComponent("TimeTooltip",class extends Component$1{constructor(player,options){super(player,options),this.update=throttle(bind_(this,this.update),30)}createEl(){return super.createEl("div",{className:"vjs-time-tooltip"},{"aria-hidden":"true"})}update(seekBarRect,seekBarPoint,content){const tooltipRect=findPosition(this.el_),playerRect=getBoundingClientRect(this.player_.el()),seekBarPointPx=seekBarRect.width*seekBarPoint;if(!playerRect||!tooltipRect)return;const spaceLeftOfPoint=seekBarRect.left-playerRect.left+seekBarPointPx,spaceRightOfPoint=seekBarRect.width-seekBarPointPx+(playerRect.right-seekBarRect.right);let pullTooltipBy=tooltipRect.width/2;spaceLeftOfPoint<pullTooltipBy?pullTooltipBy+=pullTooltipBy-spaceLeftOfPoint:spaceRightOfPoint<pullTooltipBy&&(pullTooltipBy=spaceRightOfPoint),pullTooltipBy<0?pullTooltipBy=0:pullTooltipBy>tooltipRect.width&&(pullTooltipBy=tooltipRect.width),pullTooltipBy=Math.round(pullTooltipBy),this.el_.style.right="-".concat(pullTooltipBy,"px"),this.write(content)}write(content){textContent(this.el_,content)}updateTime(seekBarRect,seekBarPoint,time,cb){this.requestNamedAnimationFrame("TimeTooltip#updateTime",(()=>{let content;const duration=this.player_.duration();if(this.player_.liveTracker&&this.player_.liveTracker.isLive()){const liveWindow=this.player_.liveTracker.liveWindow(),secondsBehind=liveWindow-seekBarPoint*liveWindow;content=(secondsBehind<1?"":"-")+formatTime(secondsBehind,liveWindow)}else content=formatTime(time,duration);this.update(seekBarRect,seekBarPoint,content),cb&&cb()}))}});class PlayProgressBar extends Component$1{constructor(player,options){super(player,options),this.update=throttle(bind_(this,this.update),30)}createEl(){return super.createEl("div",{className:"vjs-play-progress vjs-slider-bar"},{"aria-hidden":"true"})}update(seekBarRect,seekBarPoint){const timeTooltip=this.getChild("timeTooltip");if(!timeTooltip)return;const time=this.player_.scrubbing()?this.player_.getCache().currentTime:this.player_.currentTime();timeTooltip.updateTime(seekBarRect,seekBarPoint,time)}}PlayProgressBar.prototype.options_={children:[]},IS_IOS||IS_ANDROID||PlayProgressBar.prototype.options_.children.push("timeTooltip"),Component$1.registerComponent("PlayProgressBar",PlayProgressBar);class MouseTimeDisplay extends Component$1{constructor(player,options){super(player,options),this.update=throttle(bind_(this,this.update),30)}createEl(){return super.createEl("div",{className:"vjs-mouse-display"})}update(seekBarRect,seekBarPoint){const time=seekBarPoint*this.player_.duration();this.getChild("timeTooltip").updateTime(seekBarRect,seekBarPoint,time,(()=>{this.el_.style.left="".concat(seekBarRect.width*seekBarPoint,"px")}))}}MouseTimeDisplay.prototype.options_={children:["timeTooltip"]},Component$1.registerComponent("MouseTimeDisplay",MouseTimeDisplay);class SeekBar extends Slider{constructor(player,options){super(player,options),this.setEventHandlers_()}setEventHandlers_(){this.update_=bind_(this,this.update),this.update=throttle(this.update_,30),this.on(this.player_,["ended","durationchange","timeupdate"],this.update),this.player_.liveTracker&&this.on(this.player_.liveTracker,"liveedgechange",this.update),this.updateInterval=null,this.enableIntervalHandler_=e=>this.enableInterval_(e),this.disableIntervalHandler_=e=>this.disableInterval_(e),this.on(this.player_,["playing"],this.enableIntervalHandler_),this.on(this.player_,["ended","pause","waiting"],this.disableIntervalHandler_),"hidden"in document&&"visibilityState"in document&&this.on(document,"visibilitychange",this.toggleVisibility_)}toggleVisibility_(e){"hidden"===document.visibilityState?(this.cancelNamedAnimationFrame("SeekBar#update"),this.cancelNamedAnimationFrame("Slider#update"),this.disableInterval_(e)):(this.player_.ended()||this.player_.paused()||this.enableInterval_(),this.update())}enableInterval_(){this.updateInterval||(this.updateInterval=this.setInterval(this.update,30))}disableInterval_(e){this.player_.liveTracker&&this.player_.liveTracker.isLive()&&e&&"ended"!==e.type||this.updateInterval&&(this.clearInterval(this.updateInterval),this.updateInterval=null)}createEl(){return super.createEl("div",{className:"vjs-progress-holder"},{"aria-label":this.localize("Progress Bar")})}update(event){if("hidden"===document.visibilityState)return;const percent=super.update();return this.requestNamedAnimationFrame("SeekBar#update",(()=>{const currentTime=this.player_.ended()?this.player_.duration():this.getCurrentTime_(),liveTracker=this.player_.liveTracker;let duration=this.player_.duration();liveTracker&&liveTracker.isLive()&&(duration=this.player_.liveTracker.liveCurrentTime()),this.percent_!==percent&&(this.el_.setAttribute("aria-valuenow",(100*percent).toFixed(2)),this.percent_=percent),this.currentTime_===currentTime&&this.duration_===duration||(this.el_.setAttribute("aria-valuetext",this.localize("progress bar timing: currentTime={1} duration={2}",[formatTime(currentTime,duration),formatTime(duration,duration)],"{1} of {2}")),this.currentTime_=currentTime,this.duration_=duration),this.bar&&this.bar.update(getBoundingClientRect(this.el()),this.getProgress())})),percent}userSeek_(ct){this.player_.liveTracker&&this.player_.liveTracker.isLive()&&this.player_.liveTracker.nextSeekedFromUser(),this.player_.currentTime(ct)}getCurrentTime_(){return this.player_.scrubbing()?this.player_.getCache().currentTime:this.player_.currentTime()}getPercent(){const currentTime=this.getCurrentTime_();let percent;const liveTracker=this.player_.liveTracker;return liveTracker&&liveTracker.isLive()?(percent=(currentTime-liveTracker.seekableStart())/liveTracker.liveWindow(),liveTracker.atLiveEdge()&&(percent=1)):percent=currentTime/this.player_.duration(),percent}handleMouseDown(event){isSingleLeftClick(event)&&(event.stopPropagation(),this.videoWasPlaying=!this.player_.paused(),this.player_.pause(),super.handleMouseDown(event))}handleMouseMove(event){let newTime,mouseDown=arguments.length>1&&void 0!==arguments[1]&&arguments[1];if(!isSingleLeftClick(event))return;mouseDown||this.player_.scrubbing()||this.player_.scrubbing(!0);const distance=this.calculateDistance(event),liveTracker=this.player_.liveTracker;if(liveTracker&&liveTracker.isLive()){if(distance>=.99)return void liveTracker.seekToLiveEdge();const seekableStart=liveTracker.seekableStart(),seekableEnd=liveTracker.liveCurrentTime();if(newTime=seekableStart+distance*liveTracker.liveWindow(),newTime>=seekableEnd&&(newTime=seekableEnd),newTime<=seekableStart&&(newTime=seekableStart+.1),newTime===1/0)return}else newTime=distance*this.player_.duration(),newTime===this.player_.duration()&&(newTime-=.1);this.userSeek_(newTime)}enable(){super.enable();const mouseTimeDisplay=this.getChild("mouseTimeDisplay");mouseTimeDisplay&&mouseTimeDisplay.show()}disable(){super.disable();const mouseTimeDisplay=this.getChild("mouseTimeDisplay");mouseTimeDisplay&&mouseTimeDisplay.hide()}handleMouseUp(event){super.handleMouseUp(event),event&&event.stopPropagation(),this.player_.scrubbing(!1),this.player_.trigger({type:"timeupdate",target:this,manuallyTriggered:!0}),this.videoWasPlaying?silencePromise(this.player_.play()):this.update_()}stepForward(){this.userSeek_(this.player_.currentTime()+5)}stepBack(){this.userSeek_(this.player_.currentTime()-5)}handleAction(event){this.player_.paused()?this.player_.play():this.player_.pause()}handleKeyDown(event){const liveTracker=this.player_.liveTracker;if(keycode.isEventKey(event,"Space")||keycode.isEventKey(event,"Enter"))event.preventDefault(),event.stopPropagation(),this.handleAction(event);else if(keycode.isEventKey(event,"Home"))event.preventDefault(),event.stopPropagation(),this.userSeek_(0);else if(keycode.isEventKey(event,"End"))event.preventDefault(),event.stopPropagation(),liveTracker&&liveTracker.isLive()?this.userSeek_(liveTracker.liveCurrentTime()):this.userSeek_(this.player_.duration());else if(/^[0-9]$/.test(keycode(event))){event.preventDefault(),event.stopPropagation();const gotoFraction=10*(keycode.codes[keycode(event)]-keycode.codes[0])/100;liveTracker&&liveTracker.isLive()?this.userSeek_(liveTracker.seekableStart()+liveTracker.liveWindow()*gotoFraction):this.userSeek_(this.player_.duration()*gotoFraction)}else keycode.isEventKey(event,"PgDn")?(event.preventDefault(),event.stopPropagation(),this.userSeek_(this.player_.currentTime()-60)):keycode.isEventKey(event,"PgUp")?(event.preventDefault(),event.stopPropagation(),this.userSeek_(this.player_.currentTime()+60)):super.handleKeyDown(event)}dispose(){this.disableInterval_(),this.off(this.player_,["ended","durationchange","timeupdate"],this.update),this.player_.liveTracker&&this.off(this.player_.liveTracker,"liveedgechange",this.update),this.off(this.player_,["playing"],this.enableIntervalHandler_),this.off(this.player_,["ended","pause","waiting"],this.disableIntervalHandler_),"hidden"in document&&"visibilityState"in document&&this.off(document,"visibilitychange",this.toggleVisibility_),super.dispose()}}SeekBar.prototype.options_={children:["loadProgressBar","playProgressBar"],barName:"playProgressBar"},IS_IOS||IS_ANDROID||SeekBar.prototype.options_.children.splice(1,0,"mouseTimeDisplay"),Component$1.registerComponent("SeekBar",SeekBar);class ProgressControl extends Component$1{constructor(player,options){super(player,options),this.handleMouseMove=throttle(bind_(this,this.handleMouseMove),30),this.throttledHandleMouseSeek=throttle(bind_(this,this.handleMouseSeek),30),this.handleMouseUpHandler_=e=>this.handleMouseUp(e),this.handleMouseDownHandler_=e=>this.handleMouseDown(e),this.enable()}createEl(){return super.createEl("div",{className:"vjs-progress-control vjs-control"})}handleMouseMove(event){const seekBar=this.getChild("seekBar");if(!seekBar)return;const playProgressBar=seekBar.getChild("playProgressBar"),mouseTimeDisplay=seekBar.getChild("mouseTimeDisplay");if(!playProgressBar&&!mouseTimeDisplay)return;const seekBarEl=seekBar.el(),seekBarRect=findPosition(seekBarEl);let seekBarPoint=getPointerPosition(seekBarEl,event).x;seekBarPoint=clamp(seekBarPoint,0,1),mouseTimeDisplay&&mouseTimeDisplay.update(seekBarRect,seekBarPoint),playProgressBar&&playProgressBar.update(seekBarRect,seekBar.getProgress())}handleMouseSeek(event){const seekBar=this.getChild("seekBar");seekBar&&seekBar.handleMouseMove(event)}enabled(){return this.enabled_}disable(){if(this.children().forEach((child=>child.disable&&child.disable())),this.enabled()&&(this.off(["mousedown","touchstart"],this.handleMouseDownHandler_),this.off(this.el_,"mousemove",this.handleMouseMove),this.removeListenersAddedOnMousedownAndTouchstart(),this.addClass("disabled"),this.enabled_=!1,this.player_.scrubbing())){const seekBar=this.getChild("seekBar");this.player_.scrubbing(!1),seekBar.videoWasPlaying&&silencePromise(this.player_.play())}}enable(){this.children().forEach((child=>child.enable&&child.enable())),this.enabled()||(this.on(["mousedown","touchstart"],this.handleMouseDownHandler_),this.on(this.el_,"mousemove",this.handleMouseMove),this.removeClass("disabled"),this.enabled_=!0)}removeListenersAddedOnMousedownAndTouchstart(){const doc=this.el_.ownerDocument;this.off(doc,"mousemove",this.throttledHandleMouseSeek),this.off(doc,"touchmove",this.throttledHandleMouseSeek),this.off(doc,"mouseup",this.handleMouseUpHandler_),this.off(doc,"touchend",this.handleMouseUpHandler_)}handleMouseDown(event){const doc=this.el_.ownerDocument,seekBar=this.getChild("seekBar");seekBar&&seekBar.handleMouseDown(event),this.on(doc,"mousemove",this.throttledHandleMouseSeek),this.on(doc,"touchmove",this.throttledHandleMouseSeek),this.on(doc,"mouseup",this.handleMouseUpHandler_),this.on(doc,"touchend",this.handleMouseUpHandler_)}handleMouseUp(event){const seekBar=this.getChild("seekBar");seekBar&&seekBar.handleMouseUp(event),this.removeListenersAddedOnMousedownAndTouchstart()}}ProgressControl.prototype.options_={children:["seekBar"]},Component$1.registerComponent("ProgressControl",ProgressControl);class PictureInPictureToggle extends Button{constructor(player,options){super(player,options),this.on(player,["enterpictureinpicture","leavepictureinpicture"],(e=>this.handlePictureInPictureChange(e))),this.on(player,["disablepictureinpicturechanged","loadedmetadata"],(e=>this.handlePictureInPictureEnabledChange(e))),this.on(player,["loadedmetadata","audioonlymodechange","audiopostermodechange"],(()=>{"audio"===player.currentType().substring(0,5)||player.audioPosterMode()||player.audioOnlyMode()?(player.isInPictureInPicture()&&player.exitPictureInPicture(),this.hide()):this.show()})),this.disable()}buildCSSClass(){return"vjs-picture-in-picture-control ".concat(super.buildCSSClass())}handlePictureInPictureEnabledChange(){document.pictureInPictureEnabled&&!1===this.player_.disablePictureInPicture()||this.player_.options_.enableDocumentPictureInPicture&&"documentPictureInPicture"in window?this.enable():this.disable()}handlePictureInPictureChange(event){this.player_.isInPictureInPicture()?this.controlText("Exit Picture-in-Picture"):this.controlText("Picture-in-Picture"),this.handlePictureInPictureEnabledChange()}handleClick(event){this.player_.isInPictureInPicture()?this.player_.exitPictureInPicture():this.player_.requestPictureInPicture()}}PictureInPictureToggle.prototype.controlText_="Picture-in-Picture",Component$1.registerComponent("PictureInPictureToggle",PictureInPictureToggle);class FullscreenToggle extends Button{constructor(player,options){super(player,options),this.on(player,"fullscreenchange",(e=>this.handleFullscreenChange(e))),!1===document[player.fsApi_.fullscreenEnabled]&&this.disable()}buildCSSClass(){return"vjs-fullscreen-control ".concat(super.buildCSSClass())}handleFullscreenChange(event){this.player_.isFullscreen()?this.controlText("Exit Fullscreen"):this.controlText("Fullscreen")}handleClick(event){this.player_.isFullscreen()?this.player_.exitFullscreen():this.player_.requestFullscreen()}}FullscreenToggle.prototype.controlText_="Fullscreen",Component$1.registerComponent("FullscreenToggle",FullscreenToggle);Component$1.registerComponent("VolumeLevel",class extends Component$1{createEl(){const el=super.createEl("div",{className:"vjs-volume-level"});return el.appendChild(super.createEl("span",{className:"vjs-control-text"})),el}});Component$1.registerComponent("VolumeLevelTooltip",class extends Component$1{constructor(player,options){super(player,options),this.update=throttle(bind_(this,this.update),30)}createEl(){return super.createEl("div",{className:"vjs-volume-tooltip"},{"aria-hidden":"true"})}update(rangeBarRect,rangeBarPoint,vertical,content){if(!vertical){const tooltipRect=getBoundingClientRect(this.el_),playerRect=getBoundingClientRect(this.player_.el()),volumeBarPointPx=rangeBarRect.width*rangeBarPoint;if(!playerRect||!tooltipRect)return;const spaceLeftOfPoint=rangeBarRect.left-playerRect.left+volumeBarPointPx,spaceRightOfPoint=rangeBarRect.width-volumeBarPointPx+(playerRect.right-rangeBarRect.right);let pullTooltipBy=tooltipRect.width/2;spaceLeftOfPoint<pullTooltipBy?pullTooltipBy+=pullTooltipBy-spaceLeftOfPoint:spaceRightOfPoint<pullTooltipBy&&(pullTooltipBy=spaceRightOfPoint),pullTooltipBy<0?pullTooltipBy=0:pullTooltipBy>tooltipRect.width&&(pullTooltipBy=tooltipRect.width),this.el_.style.right="-".concat(pullTooltipBy,"px")}this.write("".concat(content,"%"))}write(content){textContent(this.el_,content)}updateVolume(rangeBarRect,rangeBarPoint,vertical,volume,cb){this.requestNamedAnimationFrame("VolumeLevelTooltip#updateVolume",(()=>{this.update(rangeBarRect,rangeBarPoint,vertical,volume.toFixed(0)),cb&&cb()}))}});class MouseVolumeLevelDisplay extends Component$1{constructor(player,options){super(player,options),this.update=throttle(bind_(this,this.update),30)}createEl(){return super.createEl("div",{className:"vjs-mouse-display"})}update(rangeBarRect,rangeBarPoint,vertical){const volume=100*rangeBarPoint;this.getChild("volumeLevelTooltip").updateVolume(rangeBarRect,rangeBarPoint,vertical,volume,(()=>{vertical?this.el_.style.bottom="".concat(rangeBarRect.height*rangeBarPoint,"px"):this.el_.style.left="".concat(rangeBarRect.width*rangeBarPoint,"px")}))}}MouseVolumeLevelDisplay.prototype.options_={children:["volumeLevelTooltip"]},Component$1.registerComponent("MouseVolumeLevelDisplay",MouseVolumeLevelDisplay);class VolumeBar extends Slider{constructor(player,options){super(player,options),this.on("slideractive",(e=>this.updateLastVolume_(e))),this.on(player,"volumechange",(e=>this.updateARIAAttributes(e))),player.ready((()=>this.updateARIAAttributes()))}createEl(){return super.createEl("div",{className:"vjs-volume-bar vjs-slider-bar"},{"aria-label":this.localize("Volume Level"),"aria-live":"polite"})}handleMouseDown(event){isSingleLeftClick(event)&&super.handleMouseDown(event)}handleMouseMove(event){const mouseVolumeLevelDisplay=this.getChild("mouseVolumeLevelDisplay");if(mouseVolumeLevelDisplay){const volumeBarEl=this.el(),volumeBarRect=getBoundingClientRect(volumeBarEl),vertical=this.vertical();let volumeBarPoint=getPointerPosition(volumeBarEl,event);volumeBarPoint=vertical?volumeBarPoint.y:volumeBarPoint.x,volumeBarPoint=clamp(volumeBarPoint,0,1),mouseVolumeLevelDisplay.update(volumeBarRect,volumeBarPoint,vertical)}isSingleLeftClick(event)&&(this.checkMuted(),this.player_.volume(this.calculateDistance(event)))}checkMuted(){this.player_.muted()&&this.player_.muted(!1)}getPercent(){return this.player_.muted()?0:this.player_.volume()}stepForward(){this.checkMuted(),this.player_.volume(this.player_.volume()+.1)}stepBack(){this.checkMuted(),this.player_.volume(this.player_.volume()-.1)}updateARIAAttributes(event){const ariaValue=this.player_.muted()?0:this.volumeAsPercentage_();this.el_.setAttribute("aria-valuenow",ariaValue),this.el_.setAttribute("aria-valuetext",ariaValue+"%")}volumeAsPercentage_(){return Math.round(100*this.player_.volume())}updateLastVolume_(){const volumeBeforeDrag=this.player_.volume();this.one("sliderinactive",(()=>{0===this.player_.volume()&&this.player_.lastVolume_(volumeBeforeDrag)}))}}VolumeBar.prototype.options_={children:["volumeLevel"],barName:"volumeLevel"},IS_IOS||IS_ANDROID||VolumeBar.prototype.options_.children.splice(0,0,"mouseVolumeLevelDisplay"),VolumeBar.prototype.playerEvent="volumechange",Component$1.registerComponent("VolumeBar",VolumeBar);class VolumeControl extends Component$1{constructor(player){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};options.vertical=options.vertical||!1,(void 0===options.volumeBar||isPlain(options.volumeBar))&&(options.volumeBar=options.volumeBar||{},options.volumeBar.vertical=options.vertical),super(player,options),function(self,player){player.tech_&&!player.tech_.featuresVolumeControl&&self.addClass("vjs-hidden"),self.on(player,"loadstart",(function(){player.tech_.featuresVolumeControl?self.removeClass("vjs-hidden"):self.addClass("vjs-hidden")}))}(this,player),this.throttledHandleMouseMove=throttle(bind_(this,this.handleMouseMove),30),this.handleMouseUpHandler_=e=>this.handleMouseUp(e),this.on("mousedown",(e=>this.handleMouseDown(e))),this.on("touchstart",(e=>this.handleMouseDown(e))),this.on("mousemove",(e=>this.handleMouseMove(e))),this.on(this.volumeBar,["focus","slideractive"],(()=>{this.volumeBar.addClass("vjs-slider-active"),this.addClass("vjs-slider-active"),this.trigger("slideractive")})),this.on(this.volumeBar,["blur","sliderinactive"],(()=>{this.volumeBar.removeClass("vjs-slider-active"),this.removeClass("vjs-slider-active"),this.trigger("sliderinactive")}))}createEl(){let orientationClass="vjs-volume-horizontal";return this.options_.vertical&&(orientationClass="vjs-volume-vertical"),super.createEl("div",{className:"vjs-volume-control vjs-control ".concat(orientationClass)})}handleMouseDown(event){const doc=this.el_.ownerDocument;this.on(doc,"mousemove",this.throttledHandleMouseMove),this.on(doc,"touchmove",this.throttledHandleMouseMove),this.on(doc,"mouseup",this.handleMouseUpHandler_),this.on(doc,"touchend",this.handleMouseUpHandler_)}handleMouseUp(event){const doc=this.el_.ownerDocument;this.off(doc,"mousemove",this.throttledHandleMouseMove),this.off(doc,"touchmove",this.throttledHandleMouseMove),this.off(doc,"mouseup",this.handleMouseUpHandler_),this.off(doc,"touchend",this.handleMouseUpHandler_)}handleMouseMove(event){this.volumeBar.handleMouseMove(event)}}VolumeControl.prototype.options_={children:["volumeBar"]},Component$1.registerComponent("VolumeControl",VolumeControl);class MuteToggle extends Button{constructor(player,options){super(player,options),function(self,player){player.tech_&&!player.tech_.featuresMuteControl&&self.addClass("vjs-hidden"),self.on(player,"loadstart",(function(){player.tech_.featuresMuteControl?self.removeClass("vjs-hidden"):self.addClass("vjs-hidden")}))}(this,player),this.on(player,["loadstart","volumechange"],(e=>this.update(e)))}buildCSSClass(){return"vjs-mute-control ".concat(super.buildCSSClass())}handleClick(event){const vol=this.player_.volume(),lastVolume=this.player_.lastVolume_();if(0===vol){const volumeToSet=lastVolume<.1?.1:lastVolume;this.player_.volume(volumeToSet),this.player_.muted(!1)}else this.player_.muted(!this.player_.muted())}update(event){this.updateIcon_(),this.updateControlText_()}updateIcon_(){const vol=this.player_.volume();let level=3;IS_IOS&&this.player_.tech_&&this.player_.tech_.el_&&this.player_.muted(this.player_.tech_.el_.muted),0===vol||this.player_.muted()?level=0:vol<.33?level=1:vol<.67&&(level=2),removeClass(this.el_,[0,1,2,3].reduce(((str,i)=>str+"".concat(i?" ":"","vjs-vol-").concat(i)),"")),addClass(this.el_,"vjs-vol-".concat(level))}updateControlText_(){const text=this.player_.muted()||0===this.player_.volume()?"Unmute":"Mute";this.controlText()!==text&&this.controlText(text)}}MuteToggle.prototype.controlText_="Mute",Component$1.registerComponent("MuteToggle",MuteToggle);class VolumePanel extends Component$1{constructor(player){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};void 0!==options.inline?options.inline=options.inline:options.inline=!0,(void 0===options.volumeControl||isPlain(options.volumeControl))&&(options.volumeControl=options.volumeControl||{},options.volumeControl.vertical=!options.inline),super(player,options),this.handleKeyPressHandler_=e=>this.handleKeyPress(e),this.on(player,["loadstart"],(e=>this.volumePanelState_(e))),this.on(this.muteToggle,"keyup",(e=>this.handleKeyPress(e))),this.on(this.volumeControl,"keyup",(e=>this.handleVolumeControlKeyUp(e))),this.on("keydown",(e=>this.handleKeyPress(e))),this.on("mouseover",(e=>this.handleMouseOver(e))),this.on("mouseout",(e=>this.handleMouseOut(e))),this.on(this.volumeControl,["slideractive"],this.sliderActive_),this.on(this.volumeControl,["sliderinactive"],this.sliderInactive_)}sliderActive_(){this.addClass("vjs-slider-active")}sliderInactive_(){this.removeClass("vjs-slider-active")}volumePanelState_(){this.volumeControl.hasClass("vjs-hidden")&&this.muteToggle.hasClass("vjs-hidden")&&this.addClass("vjs-hidden"),this.volumeControl.hasClass("vjs-hidden")&&!this.muteToggle.hasClass("vjs-hidden")&&this.addClass("vjs-mute-toggle-only")}createEl(){let orientationClass="vjs-volume-panel-horizontal";return this.options_.inline||(orientationClass="vjs-volume-panel-vertical"),super.createEl("div",{className:"vjs-volume-panel vjs-control ".concat(orientationClass)})}dispose(){this.handleMouseOut(),super.dispose()}handleVolumeControlKeyUp(event){keycode.isEventKey(event,"Esc")&&this.muteToggle.focus()}handleMouseOver(event){this.addClass("vjs-hover"),on(document,"keyup",this.handleKeyPressHandler_)}handleMouseOut(event){this.removeClass("vjs-hover"),off(document,"keyup",this.handleKeyPressHandler_)}handleKeyPress(event){keycode.isEventKey(event,"Esc")&&this.handleMouseOut()}}VolumePanel.prototype.options_={children:["muteToggle","volumeControl"]},Component$1.registerComponent("VolumePanel",VolumePanel);Component$1.registerComponent("SkipForward",class extends Button{constructor(player,options){super(player,options),this.validOptions=[5,10,30],this.skipTime=this.getSkipForwardTime(),this.skipTime&&this.validOptions.includes(this.skipTime)?(this.controlText(this.localize("Skip forward {1} seconds",[this.skipTime])),this.show()):this.hide()}getSkipForwardTime(){const playerOptions=this.options_.playerOptions;return playerOptions.controlBar&&playerOptions.controlBar.skipButtons&&playerOptions.controlBar.skipButtons.forward}buildCSSClass(){return"vjs-skip-forward-".concat(this.getSkipForwardTime()," ").concat(super.buildCSSClass())}handleClick(event){const currentVideoTime=this.player_.currentTime(),liveTracker=this.player_.liveTracker,duration=liveTracker&&liveTracker.isLive()?liveTracker.seekableEnd():this.player_.duration();let newTime;newTime=currentVideoTime+this.skipTime<=duration?currentVideoTime+this.skipTime:duration,this.player_.currentTime(newTime)}handleLanguagechange(){this.controlText(this.localize("Skip forward {1} seconds",[this.skipTime]))}});class SkipBackward extends Button{constructor(player,options){super(player,options),this.validOptions=[5,10,30],this.skipTime=this.getSkipBackwardTime(),this.skipTime&&this.validOptions.includes(this.skipTime)?(this.controlText(this.localize("Skip backward {1} seconds",[this.skipTime])),this.show()):this.hide()}getSkipBackwardTime(){const playerOptions=this.options_.playerOptions;return playerOptions.controlBar&&playerOptions.controlBar.skipButtons&&playerOptions.controlBar.skipButtons.backward}buildCSSClass(){return"vjs-skip-backward-".concat(this.getSkipBackwardTime()," ").concat(super.buildCSSClass())}handleClick(event){const currentVideoTime=this.player_.currentTime(),liveTracker=this.player_.liveTracker,seekableStart=liveTracker&&liveTracker.isLive()&&liveTracker.seekableStart();let newTime;newTime=seekableStart&&currentVideoTime-this.skipTime<=seekableStart?seekableStart:currentVideoTime>=this.skipTime?currentVideoTime-this.skipTime:0,this.player_.currentTime(newTime)}handleLanguagechange(){this.controlText(this.localize("Skip backward {1} seconds",[this.skipTime]))}}SkipBackward.prototype.controlText_="Skip Backward",Component$1.registerComponent("SkipBackward",SkipBackward);class Menu extends Component$1{constructor(player,options){super(player,options),options&&(this.menuButton_=options.menuButton),this.focusedChild_=-1,this.on("keydown",(e=>this.handleKeyDown(e))),this.boundHandleBlur_=e=>this.handleBlur(e),this.boundHandleTapClick_=e=>this.handleTapClick(e)}addEventListenerForItem(component){component instanceof Component$1&&(this.on(component,"blur",this.boundHandleBlur_),this.on(component,["tap","click"],this.boundHandleTapClick_))}removeEventListenerForItem(component){component instanceof Component$1&&(this.off(component,"blur",this.boundHandleBlur_),this.off(component,["tap","click"],this.boundHandleTapClick_))}removeChild(component){"string"==typeof component&&(component=this.getChild(component)),this.removeEventListenerForItem(component),super.removeChild(component)}addItem(component){const childComponent=this.addChild(component);childComponent&&this.addEventListenerForItem(childComponent)}createEl(){const contentElType=this.options_.contentElType||"ul";this.contentEl_=createEl(contentElType,{className:"vjs-menu-content"}),this.contentEl_.setAttribute("role","menu");const el=super.createEl("div",{append:this.contentEl_,className:"vjs-menu"});return el.appendChild(this.contentEl_),on(el,"click",(function(event){event.preventDefault(),event.stopImmediatePropagation()})),el}dispose(){this.contentEl_=null,this.boundHandleBlur_=null,this.boundHandleTapClick_=null,super.dispose()}handleBlur(event){const relatedTarget=event.relatedTarget||document.activeElement;if(!this.children().some((element=>element.el()===relatedTarget))){const btn=this.menuButton_;btn&&btn.buttonPressed_&&relatedTarget!==btn.el().firstChild&&btn.unpressButton()}}handleTapClick(event){if(this.menuButton_){this.menuButton_.unpressButton();const childComponents=this.children();if(!Array.isArray(childComponents))return;const foundComponent=childComponents.filter((component=>component.el()===event.target))[0];if(!foundComponent)return;"CaptionSettingsMenuItem"!==foundComponent.name()&&this.menuButton_.focus()}}handleKeyDown(event){keycode.isEventKey(event,"Left")||keycode.isEventKey(event,"Down")?(event.preventDefault(),event.stopPropagation(),this.stepForward()):(keycode.isEventKey(event,"Right")||keycode.isEventKey(event,"Up"))&&(event.preventDefault(),event.stopPropagation(),this.stepBack())}stepForward(){let stepChild=0;void 0!==this.focusedChild_&&(stepChild=this.focusedChild_+1),this.focus(stepChild)}stepBack(){let stepChild=0;void 0!==this.focusedChild_&&(stepChild=this.focusedChild_-1),this.focus(stepChild)}focus(){let item=arguments.length>0&&void 0!==arguments[0]?arguments[0]:0;const children=this.children().slice();children.length&&children[0].hasClass("vjs-menu-title")&&children.shift(),children.length>0&&(item<0?item=0:item>=children.length&&(item=children.length-1),this.focusedChild_=item,children[item].el_.focus())}}Component$1.registerComponent("Menu",Menu);class MenuButton extends Component$1{constructor(player){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};super(player,options),this.menuButton_=new Button(player,options),this.menuButton_.controlText(this.controlText_),this.menuButton_.el_.setAttribute("aria-haspopup","true");const buttonClass=Button.prototype.buildCSSClass();this.menuButton_.el_.className=this.buildCSSClass()+" "+buttonClass,this.menuButton_.removeClass("vjs-control"),this.addChild(this.menuButton_),this.update(),this.enabled_=!0;const handleClick=e=>this.handleClick(e);this.handleMenuKeyUp_=e=>this.handleMenuKeyUp(e),this.on(this.menuButton_,"tap",handleClick),this.on(this.menuButton_,"click",handleClick),this.on(this.menuButton_,"keydown",(e=>this.handleKeyDown(e))),this.on(this.menuButton_,"mouseenter",(()=>{this.addClass("vjs-hover"),this.menu.show(),on(document,"keyup",this.handleMenuKeyUp_)})),this.on("mouseleave",(e=>this.handleMouseLeave(e))),this.on("keydown",(e=>this.handleSubmenuKeyDown(e)))}update(){const menu=this.createMenu();this.menu&&(this.menu.dispose(),this.removeChild(this.menu)),this.menu=menu,this.addChild(menu),this.buttonPressed_=!1,this.menuButton_.el_.setAttribute("aria-expanded","false"),this.items&&this.items.length<=this.hideThreshold_?(this.hide(),this.menu.contentEl_.removeAttribute("role")):(this.show(),this.menu.contentEl_.setAttribute("role","menu"))}createMenu(){const menu=new Menu(this.player_,{menuButton:this});if(this.hideThreshold_=0,this.options_.title){const titleEl=createEl("li",{className:"vjs-menu-title",textContent:toTitleCase$1(this.options_.title),tabIndex:-1}),titleComponent=new Component$1(this.player_,{el:titleEl});menu.addItem(titleComponent)}if(this.items=this.createItems(),this.items)for(let i=0;i<this.items.length;i++)menu.addItem(this.items[i]);return menu}createItems(){}createEl(){return super.createEl("div",{className:this.buildWrapperCSSClass()},{})}buildWrapperCSSClass(){let menuButtonClass="vjs-menu-button";!0===this.options_.inline?menuButtonClass+="-inline":menuButtonClass+="-popup";const buttonClass=Button.prototype.buildCSSClass();return"vjs-menu-button ".concat(menuButtonClass," ").concat(buttonClass," ").concat(super.buildCSSClass())}buildCSSClass(){let menuButtonClass="vjs-menu-button";return!0===this.options_.inline?menuButtonClass+="-inline":menuButtonClass+="-popup","vjs-menu-button ".concat(menuButtonClass," ").concat(super.buildCSSClass())}controlText(text){let el=arguments.length>1&&void 0!==arguments[1]?arguments[1]:this.menuButton_.el();return this.menuButton_.controlText(text,el)}dispose(){this.handleMouseLeave(),super.dispose()}handleClick(event){this.buttonPressed_?this.unpressButton():this.pressButton()}handleMouseLeave(event){this.removeClass("vjs-hover"),off(document,"keyup",this.handleMenuKeyUp_)}focus(){this.menuButton_.focus()}blur(){this.menuButton_.blur()}handleKeyDown(event){keycode.isEventKey(event,"Esc")||keycode.isEventKey(event,"Tab")?(this.buttonPressed_&&this.unpressButton(),keycode.isEventKey(event,"Tab")||(event.preventDefault(),this.menuButton_.focus())):(keycode.isEventKey(event,"Up")||keycode.isEventKey(event,"Down"))&&(this.buttonPressed_||(event.preventDefault(),this.pressButton()))}handleMenuKeyUp(event){(keycode.isEventKey(event,"Esc")||keycode.isEventKey(event,"Tab"))&&this.removeClass("vjs-hover")}handleSubmenuKeyPress(event){this.handleSubmenuKeyDown(event)}handleSubmenuKeyDown(event){(keycode.isEventKey(event,"Esc")||keycode.isEventKey(event,"Tab"))&&(this.buttonPressed_&&this.unpressButton(),keycode.isEventKey(event,"Tab")||(event.preventDefault(),this.menuButton_.focus()))}pressButton(){if(this.enabled_){if(this.buttonPressed_=!0,this.menu.show(),this.menu.lockShowing(),this.menuButton_.el_.setAttribute("aria-expanded","true"),IS_IOS&&isInFrame())return;this.menu.focus()}}unpressButton(){this.enabled_&&(this.buttonPressed_=!1,this.menu.unlockShowing(),this.menu.hide(),this.menuButton_.el_.setAttribute("aria-expanded","false"))}disable(){this.unpressButton(),this.enabled_=!1,this.addClass("vjs-disabled"),this.menuButton_.disable()}enable(){this.enabled_=!0,this.removeClass("vjs-disabled"),this.menuButton_.enable()}}Component$1.registerComponent("MenuButton",MenuButton);class TrackButton extends MenuButton{constructor(player,options){const tracks=options.tracks;if(super(player,options),this.items.length<=1&&this.hide(),!tracks)return;const updateHandler=bind_(this,this.update);tracks.addEventListener("removetrack",updateHandler),tracks.addEventListener("addtrack",updateHandler),tracks.addEventListener("labelchange",updateHandler),this.player_.on("ready",updateHandler),this.player_.on("dispose",(function(){tracks.removeEventListener("removetrack",updateHandler),tracks.removeEventListener("addtrack",updateHandler),tracks.removeEventListener("labelchange",updateHandler)}))}}Component$1.registerComponent("TrackButton",TrackButton);const MenuKeys=["Tab","Esc","Up","Down","Right","Left"];class MenuItem extends ClickableComponent{constructor(player,options){super(player,options),this.selectable=options.selectable,this.isSelected_=options.selected||!1,this.multiSelectable=options.multiSelectable,this.selected(this.isSelected_),this.selectable?this.multiSelectable?this.el_.setAttribute("role","menuitemcheckbox"):this.el_.setAttribute("role","menuitemradio"):this.el_.setAttribute("role","menuitem")}createEl(type,props,attrs){this.nonIconControl=!0;const el=super.createEl("li",Object.assign({className:"vjs-menu-item",tabIndex:-1},props),attrs);return el.replaceChild(createEl("span",{className:"vjs-menu-item-text",textContent:this.localize(this.options_.label)}),el.querySelector(".vjs-icon-placeholder")),el}handleKeyDown(event){MenuKeys.some((key=>keycode.isEventKey(event,key)))||super.handleKeyDown(event)}handleClick(event){this.selected(!0)}selected(selected){this.selectable&&(selected?(this.addClass("vjs-selected"),this.el_.setAttribute("aria-checked","true"),this.controlText(", selected"),this.isSelected_=!0):(this.removeClass("vjs-selected"),this.el_.setAttribute("aria-checked","false"),this.controlText(""),this.isSelected_=!1))}}Component$1.registerComponent("MenuItem",MenuItem);class TextTrackMenuItem extends MenuItem{constructor(player,options){var _this3;const track=options.track,tracks=player.textTracks();options.label=track.label||track.language||"Unknown",options.selected="showing"===track.mode,super(player,options),_this3=this,this.track=track,this.kinds=(options.kinds||[options.kind||this.track.kind]).filter(Boolean);const changeHandler=function(){for(var _len17=arguments.length,args=new Array(_len17),_key17=0;_key17<_len17;_key17++)args[_key17]=arguments[_key17];_this3.handleTracksChange.apply(_this3,args)},selectedLanguageChangeHandler=function(){for(var _len18=arguments.length,args=new Array(_len18),_key18=0;_key18<_len18;_key18++)args[_key18]=arguments[_key18];_this3.handleSelectedLanguageChange.apply(_this3,args)};if(player.on(["loadstart","texttrackchange"],changeHandler),tracks.addEventListener("change",changeHandler),tracks.addEventListener("selectedlanguagechange",selectedLanguageChangeHandler),this.on("dispose",(function(){player.off(["loadstart","texttrackchange"],changeHandler),tracks.removeEventListener("change",changeHandler),tracks.removeEventListener("selectedlanguagechange",selectedLanguageChangeHandler)})),void 0===tracks.onchange){let event;this.on(["tap","click"],(function(){if("object"!=typeof window.Event)try{event=new window.Event("change")}catch(err){}event||(event=document.createEvent("Event"),event.initEvent("change",!0,!0)),tracks.dispatchEvent(event)}))}this.handleTracksChange()}handleClick(event){const referenceTrack=this.track,tracks=this.player_.textTracks();if(super.handleClick(event),tracks)for(let i=0;i<tracks.length;i++){const track=tracks[i];-1!==this.kinds.indexOf(track.kind)&&(track===referenceTrack?"showing"!==track.mode&&(track.mode="showing"):"disabled"!==track.mode&&(track.mode="disabled"))}}handleTracksChange(event){const shouldBeSelected="showing"===this.track.mode;shouldBeSelected!==this.isSelected_&&this.selected(shouldBeSelected)}handleSelectedLanguageChange(event){if("showing"===this.track.mode){const selectedLanguage=this.player_.cache_.selectedLanguage;if(selectedLanguage&&selectedLanguage.enabled&&selectedLanguage.language===this.track.language&&selectedLanguage.kind!==this.track.kind)return;this.player_.cache_.selectedLanguage={enabled:!0,language:this.track.language,kind:this.track.kind}}}dispose(){this.track=null,super.dispose()}}Component$1.registerComponent("TextTrackMenuItem",TextTrackMenuItem);class OffTextTrackMenuItem extends TextTrackMenuItem{constructor(player,options){options.track={player:player,kind:options.kind,kinds:options.kinds,default:!1,mode:"disabled"},options.kinds||(options.kinds=[options.kind]),options.label?options.track.label=options.label:options.track.label=options.kinds.join(" and ")+" off",options.selectable=!0,options.multiSelectable=!1,super(player,options)}handleTracksChange(event){const tracks=this.player().textTracks();let shouldBeSelected=!0;for(let i=0,l=tracks.length;i<l;i++){const track=tracks[i];if(this.options_.kinds.indexOf(track.kind)>-1&&"showing"===track.mode){shouldBeSelected=!1;break}}shouldBeSelected!==this.isSelected_&&this.selected(shouldBeSelected)}handleSelectedLanguageChange(event){const tracks=this.player().textTracks();let allHidden=!0;for(let i=0,l=tracks.length;i<l;i++){const track=tracks[i];if(["captions","descriptions","subtitles"].indexOf(track.kind)>-1&&"showing"===track.mode){allHidden=!1;break}}allHidden&&(this.player_.cache_.selectedLanguage={enabled:!1})}handleLanguagechange(){this.$(".vjs-menu-item-text").textContent=this.player_.localize(this.options_.label),super.handleLanguagechange()}}Component$1.registerComponent("OffTextTrackMenuItem",OffTextTrackMenuItem);class TextTrackButton extends TrackButton{constructor(player){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};options.tracks=player.textTracks(),super(player,options)}createItems(){let label,items=arguments.length>0&&void 0!==arguments[0]?arguments[0]:[],TrackMenuItem=arguments.length>1&&void 0!==arguments[1]?arguments[1]:TextTrackMenuItem;this.label_&&(label="".concat(this.label_," off")),items.push(new OffTextTrackMenuItem(this.player_,{kinds:this.kinds_,kind:this.kind_,label:label})),this.hideThreshold_+=1;const tracks=this.player_.textTracks();Array.isArray(this.kinds_)||(this.kinds_=[this.kind_]);for(let i=0;i<tracks.length;i++){const track=tracks[i];if(this.kinds_.indexOf(track.kind)>-1){const item=new TrackMenuItem(this.player_,{track:track,kinds:this.kinds_,kind:this.kind_,selectable:!0,multiSelectable:!1});item.addClass("vjs-".concat(track.kind,"-menu-item")),items.push(item)}}return items}}Component$1.registerComponent("TextTrackButton",TextTrackButton);class ChaptersTrackMenuItem extends MenuItem{constructor(player,options){const track=options.track,cue=options.cue,currentTime=player.currentTime();options.selectable=!0,options.multiSelectable=!1,options.label=cue.text,options.selected=cue.startTime<=currentTime&&currentTime<cue.endTime,super(player,options),this.track=track,this.cue=cue}handleClick(event){super.handleClick(),this.player_.currentTime(this.cue.startTime)}}Component$1.registerComponent("ChaptersTrackMenuItem",ChaptersTrackMenuItem);class ChaptersButton extends TextTrackButton{constructor(player,options,ready){super(player,options,ready),this.selectCurrentItem_=()=>{this.items.forEach((item=>{item.selected(this.track_.activeCues[0]===item.cue)}))}}buildCSSClass(){return"vjs-chapters-button ".concat(super.buildCSSClass())}buildWrapperCSSClass(){return"vjs-chapters-button ".concat(super.buildWrapperCSSClass())}update(event){if(event&&event.track&&"chapters"!==event.track.kind)return;const track=this.findChaptersTrack();track!==this.track_?(this.setTrack(track),super.update()):(!this.items||track&&track.cues&&track.cues.length!==this.items.length)&&super.update()}setTrack(track){if(this.track_!==track){if(this.updateHandler_||(this.updateHandler_=this.update.bind(this)),this.track_){const remoteTextTrackEl=this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);remoteTextTrackEl&&remoteTextTrackEl.removeEventListener("load",this.updateHandler_),this.track_.removeEventListener("cuechange",this.selectCurrentItem_),this.track_=null}if(this.track_=track,this.track_){this.track_.mode="hidden";const remoteTextTrackEl=this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);remoteTextTrackEl&&remoteTextTrackEl.addEventListener("load",this.updateHandler_),this.track_.addEventListener("cuechange",this.selectCurrentItem_)}}}findChaptersTrack(){const tracks=this.player_.textTracks()||[];for(let i=tracks.length-1;i>=0;i--){const track=tracks[i];if(track.kind===this.kind_)return track}}getMenuCaption(){return this.track_&&this.track_.label?this.track_.label:this.localize(toTitleCase$1(this.kind_))}createMenu(){return this.options_.title=this.getMenuCaption(),super.createMenu()}createItems(){const items=[];if(!this.track_)return items;const cues=this.track_.cues;if(!cues)return items;for(let i=0,l=cues.length;i<l;i++){const cue=cues[i],mi=new ChaptersTrackMenuItem(this.player_,{track:this.track_,cue:cue});items.push(mi)}return items}}ChaptersButton.prototype.kind_="chapters",ChaptersButton.prototype.controlText_="Chapters",Component$1.registerComponent("ChaptersButton",ChaptersButton);class DescriptionsButton extends TextTrackButton{constructor(player,options,ready){super(player,options,ready);const tracks=player.textTracks(),changeHandler=bind_(this,this.handleTracksChange);tracks.addEventListener("change",changeHandler),this.on("dispose",(function(){tracks.removeEventListener("change",changeHandler)}))}handleTracksChange(event){const tracks=this.player().textTracks();let disabled=!1;for(let i=0,l=tracks.length;i<l;i++){const track=tracks[i];if(track.kind!==this.kind_&&"showing"===track.mode){disabled=!0;break}}disabled?this.disable():this.enable()}buildCSSClass(){return"vjs-descriptions-button ".concat(super.buildCSSClass())}buildWrapperCSSClass(){return"vjs-descriptions-button ".concat(super.buildWrapperCSSClass())}}DescriptionsButton.prototype.kind_="descriptions",DescriptionsButton.prototype.controlText_="Descriptions",Component$1.registerComponent("DescriptionsButton",DescriptionsButton);class SubtitlesButton extends TextTrackButton{constructor(player,options,ready){super(player,options,ready)}buildCSSClass(){return"vjs-subtitles-button ".concat(super.buildCSSClass())}buildWrapperCSSClass(){return"vjs-subtitles-button ".concat(super.buildWrapperCSSClass())}}SubtitlesButton.prototype.kind_="subtitles",SubtitlesButton.prototype.controlText_="Subtitles",Component$1.registerComponent("SubtitlesButton",SubtitlesButton);class CaptionSettingsMenuItem extends TextTrackMenuItem{constructor(player,options){options.track={player:player,kind:options.kind,label:options.kind+" settings",selectable:!1,default:!1,mode:"disabled"},options.selectable=!1,options.name="CaptionSettingsMenuItem",super(player,options),this.addClass("vjs-texttrack-settings"),this.controlText(", opens "+options.kind+" settings dialog")}handleClick(event){this.player().getChild("textTrackSettings").open()}handleLanguagechange(){this.$(".vjs-menu-item-text").textContent=this.player_.localize(this.options_.kind+" settings"),super.handleLanguagechange()}}Component$1.registerComponent("CaptionSettingsMenuItem",CaptionSettingsMenuItem);class CaptionsButton extends TextTrackButton{constructor(player,options,ready){super(player,options,ready)}buildCSSClass(){return"vjs-captions-button ".concat(super.buildCSSClass())}buildWrapperCSSClass(){return"vjs-captions-button ".concat(super.buildWrapperCSSClass())}createItems(){const items=[];return this.player().tech_&&this.player().tech_.featuresNativeTextTracks||!this.player().getChild("textTrackSettings")||(items.push(new CaptionSettingsMenuItem(this.player_,{kind:this.kind_})),this.hideThreshold_+=1),super.createItems(items)}}CaptionsButton.prototype.kind_="captions",CaptionsButton.prototype.controlText_="Captions",Component$1.registerComponent("CaptionsButton",CaptionsButton);class SubsCapsMenuItem extends TextTrackMenuItem{createEl(type,props,attrs){const el=super.createEl(type,props,attrs),parentSpan=el.querySelector(".vjs-menu-item-text");return"captions"===this.options_.track.kind&&(parentSpan.appendChild(createEl("span",{className:"vjs-icon-placeholder"},{"aria-hidden":!0})),parentSpan.appendChild(createEl("span",{className:"vjs-control-text",textContent:" ".concat(this.localize("Captions"))}))),el}}Component$1.registerComponent("SubsCapsMenuItem",SubsCapsMenuItem);class SubsCapsButton extends TextTrackButton{constructor(player){super(player,arguments.length>1&&void 0!==arguments[1]?arguments[1]:{}),this.label_="subtitles",["en","en-us","en-ca","fr-ca"].indexOf(this.player_.language_)>-1&&(this.label_="captions"),this.menuButton_.controlText(toTitleCase$1(this.label_))}buildCSSClass(){return"vjs-subs-caps-button ".concat(super.buildCSSClass())}buildWrapperCSSClass(){return"vjs-subs-caps-button ".concat(super.buildWrapperCSSClass())}createItems(){let items=[];return this.player().tech_&&this.player().tech_.featuresNativeTextTracks||!this.player().getChild("textTrackSettings")||(items.push(new CaptionSettingsMenuItem(this.player_,{kind:this.label_})),this.hideThreshold_+=1),items=super.createItems(items,SubsCapsMenuItem),items}}SubsCapsButton.prototype.kinds_=["captions","subtitles"],SubsCapsButton.prototype.controlText_="Subtitles",Component$1.registerComponent("SubsCapsButton",SubsCapsButton);class AudioTrackMenuItem extends MenuItem{constructor(player,options){var _this4;const track=options.track,tracks=player.audioTracks();options.label=track.label||track.language||"Unknown",options.selected=track.enabled,super(player,options),_this4=this,this.track=track,this.addClass("vjs-".concat(track.kind,"-menu-item"));const changeHandler=function(){for(var _len19=arguments.length,args=new Array(_len19),_key19=0;_key19<_len19;_key19++)args[_key19]=arguments[_key19];_this4.handleTracksChange.apply(_this4,args)};tracks.addEventListener("change",changeHandler),this.on("dispose",(()=>{tracks.removeEventListener("change",changeHandler)}))}createEl(type,props,attrs){const el=super.createEl(type,props,attrs),parentSpan=el.querySelector(".vjs-menu-item-text");return"main-desc"===this.options_.track.kind&&(parentSpan.appendChild(createEl("span",{className:"vjs-icon-placeholder"},{"aria-hidden":!0})),parentSpan.appendChild(createEl("span",{className:"vjs-control-text",textContent:" "+this.localize("Descriptions")}))),el}handleClick(event){if(super.handleClick(event),this.track.enabled=!0,this.player_.tech_.featuresNativeAudioTracks){const tracks=this.player_.audioTracks();for(let i=0;i<tracks.length;i++){const track=tracks[i];track!==this.track&&(track.enabled=track===this.track)}}}handleTracksChange(event){this.selected(this.track.enabled)}}Component$1.registerComponent("AudioTrackMenuItem",AudioTrackMenuItem);class AudioTrackButton extends TrackButton{constructor(player){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};options.tracks=player.audioTracks(),super(player,options)}buildCSSClass(){return"vjs-audio-button ".concat(super.buildCSSClass())}buildWrapperCSSClass(){return"vjs-audio-button ".concat(super.buildWrapperCSSClass())}createItems(){let items=arguments.length>0&&void 0!==arguments[0]?arguments[0]:[];this.hideThreshold_=1;const tracks=this.player_.audioTracks();for(let i=0;i<tracks.length;i++){const track=tracks[i];items.push(new AudioTrackMenuItem(this.player_,{track:track,selectable:!0,multiSelectable:!1}))}return items}}AudioTrackButton.prototype.controlText_="Audio Track",Component$1.registerComponent("AudioTrackButton",AudioTrackButton);class PlaybackRateMenuItem extends MenuItem{constructor(player,options){const label=options.rate,rate=parseFloat(label,10);options.label=label,options.selected=rate===player.playbackRate(),options.selectable=!0,options.multiSelectable=!1,super(player,options),this.label=label,this.rate=rate,this.on(player,"ratechange",(e=>this.update(e)))}handleClick(event){super.handleClick(),this.player().playbackRate(this.rate)}update(event){this.selected(this.player().playbackRate()===this.rate)}}PlaybackRateMenuItem.prototype.contentElType="button",Component$1.registerComponent("PlaybackRateMenuItem",PlaybackRateMenuItem);class PlaybackRateMenuButton extends MenuButton{constructor(player,options){super(player,options),this.menuButton_.el_.setAttribute("aria-describedby",this.labelElId_),this.updateVisibility(),this.updateLabel(),this.on(player,"loadstart",(e=>this.updateVisibility(e))),this.on(player,"ratechange",(e=>this.updateLabel(e))),this.on(player,"playbackrateschange",(e=>this.handlePlaybackRateschange(e)))}createEl(){const el=super.createEl();return this.labelElId_="vjs-playback-rate-value-label-"+this.id_,this.labelEl_=createEl("div",{className:"vjs-playback-rate-value",id:this.labelElId_,textContent:"1x"}),el.appendChild(this.labelEl_),el}dispose(){this.labelEl_=null,super.dispose()}buildCSSClass(){return"vjs-playback-rate ".concat(super.buildCSSClass())}buildWrapperCSSClass(){return"vjs-playback-rate ".concat(super.buildWrapperCSSClass())}createItems(){const rates=this.playbackRates(),items=[];for(let i=rates.length-1;i>=0;i--)items.push(new PlaybackRateMenuItem(this.player(),{rate:rates[i]+"x"}));return items}handlePlaybackRateschange(event){this.update()}playbackRates(){const player=this.player();return player.playbackRates&&player.playbackRates()||[]}playbackRateSupported(){return this.player().tech_&&this.player().tech_.featuresPlaybackRate&&this.playbackRates()&&this.playbackRates().length>0}updateVisibility(event){this.playbackRateSupported()?this.removeClass("vjs-hidden"):this.addClass("vjs-hidden")}updateLabel(event){this.playbackRateSupported()&&(this.labelEl_.textContent=this.player().playbackRate()+"x")}}PlaybackRateMenuButton.prototype.controlText_="Playback Rate",Component$1.registerComponent("PlaybackRateMenuButton",PlaybackRateMenuButton);class Spacer extends Component$1{buildCSSClass(){return"vjs-spacer ".concat(super.buildCSSClass())}createEl(){let tag=arguments.length>0&&void 0!==arguments[0]?arguments[0]:"div",props=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},attributes=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};return props.className||(props.className=this.buildCSSClass()),super.createEl(tag,props,attributes)}}Component$1.registerComponent("Spacer",Spacer);Component$1.registerComponent("CustomControlSpacer",class extends Spacer{buildCSSClass(){return"vjs-custom-control-spacer ".concat(super.buildCSSClass())}createEl(){return super.createEl("div",{className:this.buildCSSClass(),textContent:" "})}});class ControlBar extends Component$1{createEl(){return super.createEl("div",{className:"vjs-control-bar",dir:"ltr"})}}ControlBar.prototype.options_={children:["playToggle","skipBackward","skipForward","volumePanel","currentTimeDisplay","timeDivider","durationDisplay","progressControl","liveDisplay","seekToLive","remainingTimeDisplay","customControlSpacer","playbackRateMenuButton","chaptersButton","descriptionsButton","subsCapsButton","audioTrackButton","fullscreenToggle"]},"exitPictureInPicture"in document&&ControlBar.prototype.options_.children.splice(ControlBar.prototype.options_.children.length-1,0,"pictureInPictureToggle"),Component$1.registerComponent("ControlBar",ControlBar);class ErrorDisplay extends ModalDialog{constructor(player,options){super(player,options),this.on(player,"error",(e=>this.open(e)))}buildCSSClass(){return"vjs-error-display ".concat(super.buildCSSClass())}content(){const error=this.player().error();return error?this.localize(error.message):""}}ErrorDisplay.prototype.options_=Object.assign({},ModalDialog.prototype.options_,{pauseOnOpen:!1,fillAlways:!0,temporary:!1,uncloseable:!0}),Component$1.registerComponent("ErrorDisplay",ErrorDisplay);const COLOR_BLACK=["#000","Black"],COLOR_BLUE=["#00F","Blue"],COLOR_CYAN=["#0FF","Cyan"],COLOR_GREEN=["#0F0","Green"],COLOR_MAGENTA=["#F0F","Magenta"],COLOR_RED=["#F00","Red"],COLOR_WHITE=["#FFF","White"],COLOR_YELLOW=["#FF0","Yellow"],OPACITY_OPAQUE=["1","Opaque"],OPACITY_SEMI=["0.5","Semi-Transparent"],OPACITY_TRANS=["0","Transparent"],selectConfigs={backgroundColor:{selector:".vjs-bg-color > select",id:"captions-background-color-%s",label:"Color",options:[COLOR_BLACK,COLOR_WHITE,COLOR_RED,COLOR_GREEN,COLOR_BLUE,COLOR_YELLOW,COLOR_MAGENTA,COLOR_CYAN]},backgroundOpacity:{selector:".vjs-bg-opacity > select",id:"captions-background-opacity-%s",label:"Opacity",options:[OPACITY_OPAQUE,OPACITY_SEMI,OPACITY_TRANS]},color:{selector:".vjs-text-color > select",id:"captions-foreground-color-%s",label:"Color",options:[COLOR_WHITE,COLOR_BLACK,COLOR_RED,COLOR_GREEN,COLOR_BLUE,COLOR_YELLOW,COLOR_MAGENTA,COLOR_CYAN]},edgeStyle:{selector:".vjs-edge-style > select",id:"%s",label:"Text Edge Style",options:[["none","None"],["raised","Raised"],["depressed","Depressed"],["uniform","Uniform"],["dropshadow","Dropshadow"]]},fontFamily:{selector:".vjs-font-family > select",id:"captions-font-family-%s",label:"Font Family",options:[["proportionalSansSerif","Proportional Sans-Serif"],["monospaceSansSerif","Monospace Sans-Serif"],["proportionalSerif","Proportional Serif"],["monospaceSerif","Monospace Serif"],["casual","Casual"],["script","Script"],["small-caps","Small Caps"]]},fontPercent:{selector:".vjs-font-percent > select",id:"captions-font-size-%s",label:"Font Size",options:[["0.50","50%"],["0.75","75%"],["1.00","100%"],["1.25","125%"],["1.50","150%"],["1.75","175%"],["2.00","200%"],["3.00","300%"],["4.00","400%"]],default:2,parser:v=>"1.00"===v?null:Number(v)},textOpacity:{selector:".vjs-text-opacity > select",id:"captions-foreground-opacity-%s",label:"Opacity",options:[OPACITY_OPAQUE,OPACITY_SEMI]},windowColor:{selector:".vjs-window-color > select",id:"captions-window-color-%s",label:"Color"},windowOpacity:{selector:".vjs-window-opacity > select",id:"captions-window-opacity-%s",label:"Opacity",options:[OPACITY_TRANS,OPACITY_SEMI,OPACITY_OPAQUE]}};function parseOptionValue(value,parser){if(parser&&(value=parser(value)),value&&"none"!==value)return value}selectConfigs.windowColor.options=selectConfigs.backgroundColor.options;Component$1.registerComponent("TextTrackSettings",class extends ModalDialog{constructor(player,options){options.temporary=!1,super(player,options),this.updateDisplay=this.updateDisplay.bind(this),this.fill(),this.hasBeenOpened_=this.hasBeenFilled_=!0,this.endDialog=createEl("p",{className:"vjs-control-text",textContent:this.localize("End of dialog window.")}),this.el().appendChild(this.endDialog),this.setDefaults(),void 0===options.persistTextTrackSettings&&(this.options_.persistTextTrackSettings=this.options_.playerOptions.persistTextTrackSettings),this.on(this.$(".vjs-done-button"),"click",(()=>{this.saveSettings(),this.close()})),this.on(this.$(".vjs-default-button"),"click",(()=>{this.setDefaults(),this.updateDisplay()})),each(selectConfigs,(config=>{this.on(this.$(config.selector),"change",this.updateDisplay)})),this.options_.persistTextTrackSettings&&this.restoreSettings()}dispose(){this.endDialog=null,super.dispose()}createElSelect_(key){let legendId=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"",type=arguments.length>2&&void 0!==arguments[2]?arguments[2]:"label";const config=selectConfigs[key],id=config.id.replace("%s",this.id_),selectLabelledbyIds=[legendId,id].join(" ").trim();return["<".concat(type,' id="').concat(id,'" class="').concat("label"===type?"vjs-label":"",'">'),this.localize(config.label),"</".concat(type,">"),'<select aria-labelledby="'.concat(selectLabelledbyIds,'">')].concat(config.options.map((o=>{const optionId=id+"-"+o[1].replace(/\W+/g,"");return['<option id="'.concat(optionId,'" value="').concat(o[0],'" '),'aria-labelledby="'.concat(selectLabelledbyIds," ").concat(optionId,'">'),this.localize(o[1]),"</option>"].join("")}))).concat("</select>").join("")}createElFgColor_(){const legendId="captions-text-legend-".concat(this.id_);return['<fieldset class="vjs-fg vjs-track-setting">','<legend id="'.concat(legendId,'">'),this.localize("Text"),"</legend>",'<span class="vjs-text-color">',this.createElSelect_("color",legendId),"</span>",'<span class="vjs-text-opacity vjs-opacity">',this.createElSelect_("textOpacity",legendId),"</span>","</fieldset>"].join("")}createElBgColor_(){const legendId="captions-background-".concat(this.id_);return['<fieldset class="vjs-bg vjs-track-setting">','<legend id="'.concat(legendId,'">'),this.localize("Text Background"),"</legend>",'<span class="vjs-bg-color">',this.createElSelect_("backgroundColor",legendId),"</span>",'<span class="vjs-bg-opacity vjs-opacity">',this.createElSelect_("backgroundOpacity",legendId),"</span>","</fieldset>"].join("")}createElWinColor_(){const legendId="captions-window-".concat(this.id_);return['<fieldset class="vjs-window vjs-track-setting">','<legend id="'.concat(legendId,'">'),this.localize("Caption Area Background"),"</legend>",'<span class="vjs-window-color">',this.createElSelect_("windowColor",legendId),"</span>",'<span class="vjs-window-opacity vjs-opacity">',this.createElSelect_("windowOpacity",legendId),"</span>","</fieldset>"].join("")}createElColors_(){return createEl("div",{className:"vjs-track-settings-colors",innerHTML:[this.createElFgColor_(),this.createElBgColor_(),this.createElWinColor_()].join("")})}createElFont_(){return createEl("div",{className:"vjs-track-settings-font",innerHTML:['<fieldset class="vjs-font-percent vjs-track-setting">',this.createElSelect_("fontPercent","","legend"),"</fieldset>",'<fieldset class="vjs-edge-style vjs-track-setting">',this.createElSelect_("edgeStyle","","legend"),"</fieldset>",'<fieldset class="vjs-font-family vjs-track-setting">',this.createElSelect_("fontFamily","","legend"),"</fieldset>"].join("")})}createElControls_(){const defaultsDescription=this.localize("restore all settings to the default values");return createEl("div",{className:"vjs-track-settings-controls",innerHTML:['<button type="button" class="vjs-default-button" title="'.concat(defaultsDescription,'">'),this.localize("Reset"),'<span class="vjs-control-text"> '.concat(defaultsDescription,"</span>"),"</button>",'<button type="button" class="vjs-done-button">'.concat(this.localize("Done"),"</button>")].join("")})}content(){return[this.createElColors_(),this.createElFont_(),this.createElControls_()]}label(){return this.localize("Caption Settings Dialog")}description(){return this.localize("Beginning of dialog window. Escape will cancel and close the window.")}buildCSSClass(){return super.buildCSSClass()+" vjs-text-track-settings"}getValues(){return reduce(selectConfigs,((accum,config,key)=>{const value=(el=this.$(config.selector),parser=config.parser,parseOptionValue(el.options[el.options.selectedIndex].value,parser));var el,parser;return void 0!==value&&(accum[key]=value),accum}),{})}setValues(values){each(selectConfigs,((config,key)=>{!function(el,value,parser){if(value)for(let i=0;i<el.options.length;i++)if(parseOptionValue(el.options[i].value,parser)===value){el.selectedIndex=i;break}}(this.$(config.selector),values[key],config.parser)}))}setDefaults(){each(selectConfigs,(config=>{const index=config.hasOwnProperty("default")?config.default:0;this.$(config.selector).selectedIndex=index}))}restoreSettings(){let values;try{values=JSON.parse(window.localStorage.getItem("vjs-text-track-settings"))}catch(err){log$1.warn(err)}values&&this.setValues(values)}saveSettings(){if(!this.options_.persistTextTrackSettings)return;const values=this.getValues();try{Object.keys(values).length?window.localStorage.setItem("vjs-text-track-settings",JSON.stringify(values)):window.localStorage.removeItem("vjs-text-track-settings")}catch(err){log$1.warn(err)}}updateDisplay(){const ttDisplay=this.player_.getChild("textTrackDisplay");ttDisplay&&ttDisplay.updateDisplay()}conditionalBlur_(){this.previouslyActiveEl_=null;const cb=this.player_.controlBar,subsCapsBtn=cb&&cb.subsCapsButton,ccBtn=cb&&cb.captionsButton;subsCapsBtn?subsCapsBtn.focus():ccBtn&&ccBtn.focus()}handleLanguagechange(){this.fill()}});Component$1.registerComponent("ResizeManager",class extends Component$1{constructor(player,options){let RESIZE_OBSERVER_AVAILABLE=options.ResizeObserver||window.ResizeObserver;null===options.ResizeObserver&&(RESIZE_OBSERVER_AVAILABLE=!1);super(player,merge$2({createEl:!RESIZE_OBSERVER_AVAILABLE,reportTouchActivity:!1},options)),this.ResizeObserver=options.ResizeObserver||window.ResizeObserver,this.loadListener_=null,this.resizeObserver_=null,this.debouncedHandler_=debounce((()=>{this.resizeHandler()}),100,!1,this),RESIZE_OBSERVER_AVAILABLE?(this.resizeObserver_=new this.ResizeObserver(this.debouncedHandler_),this.resizeObserver_.observe(player.el())):(this.loadListener_=()=>{if(!this.el_||!this.el_.contentWindow)return;const debouncedHandler_=this.debouncedHandler_;let unloadListener_=this.unloadListener_=function(){off(this,"resize",debouncedHandler_),off(this,"unload",unloadListener_),unloadListener_=null};on(this.el_.contentWindow,"unload",unloadListener_),on(this.el_.contentWindow,"resize",debouncedHandler_)},this.one("load",this.loadListener_))}createEl(){return super.createEl("iframe",{className:"vjs-resize-manager",tabIndex:-1,title:this.localize("No content")},{"aria-hidden":"true"})}resizeHandler(){this.player_&&this.player_.trigger&&this.player_.trigger("playerresize")}dispose(){this.debouncedHandler_&&this.debouncedHandler_.cancel(),this.resizeObserver_&&(this.player_.el()&&this.resizeObserver_.unobserve(this.player_.el()),this.resizeObserver_.disconnect()),this.loadListener_&&this.off("load",this.loadListener_),this.el_&&this.el_.contentWindow&&this.unloadListener_&&this.unloadListener_.call(this.el_.contentWindow),this.ResizeObserver=null,this.resizeObserver=null,this.debouncedHandler_=null,this.loadListener_=null,super.dispose()}});const defaults={trackingThreshold:20,liveTolerance:15};Component$1.registerComponent("LiveTracker",class extends Component$1{constructor(player,options){super(player,merge$2(defaults,options,{createEl:!1})),this.trackLiveHandler_=()=>this.trackLive_(),this.handlePlay_=e=>this.handlePlay(e),this.handleFirstTimeupdate_=e=>this.handleFirstTimeupdate(e),this.handleSeeked_=e=>this.handleSeeked(e),this.seekToLiveEdge_=e=>this.seekToLiveEdge(e),this.reset_(),this.on(this.player_,"durationchange",(e=>this.handleDurationchange(e))),this.on(this.player_,"canplay",(()=>this.toggleTracking()))}trackLive_(){const seekable=this.player_.seekable();if(!seekable||!seekable.length)return;const newTime=Number(window.performance.now().toFixed(4)),deltaTime=-1===this.lastTime_?0:(newTime-this.lastTime_)/1e3;this.lastTime_=newTime,this.pastSeekEnd_=this.pastSeekEnd()+deltaTime;const liveCurrentTime=this.liveCurrentTime(),currentTime=this.player_.currentTime();let isBehind=this.player_.paused()||this.seekedBehindLive_||Math.abs(liveCurrentTime-currentTime)>this.options_.liveTolerance;this.timeupdateSeen_&&liveCurrentTime!==1/0||(isBehind=!1),isBehind!==this.behindLiveEdge_&&(this.behindLiveEdge_=isBehind,this.trigger("liveedgechange"))}handleDurationchange(){this.toggleTracking()}toggleTracking(){this.player_.duration()===1/0&&this.liveWindow()>=this.options_.trackingThreshold?(this.player_.options_.liveui&&this.player_.addClass("vjs-liveui"),this.startTracking()):(this.player_.removeClass("vjs-liveui"),this.stopTracking())}startTracking(){this.isTracking()||(this.timeupdateSeen_||(this.timeupdateSeen_=this.player_.hasStarted()),this.trackingInterval_=this.setInterval(this.trackLiveHandler_,30),this.trackLive_(),this.on(this.player_,["play","pause"],this.trackLiveHandler_),this.timeupdateSeen_?this.on(this.player_,"seeked",this.handleSeeked_):(this.one(this.player_,"play",this.handlePlay_),this.one(this.player_,"timeupdate",this.handleFirstTimeupdate_)))}handleFirstTimeupdate(){this.timeupdateSeen_=!0,this.on(this.player_,"seeked",this.handleSeeked_)}handleSeeked(){const timeDiff=Math.abs(this.liveCurrentTime()-this.player_.currentTime());this.seekedBehindLive_=this.nextSeekedFromUser_&&timeDiff>2,this.nextSeekedFromUser_=!1,this.trackLive_()}handlePlay(){this.one(this.player_,"timeupdate",this.seekToLiveEdge_)}reset_(){this.lastTime_=-1,this.pastSeekEnd_=0,this.lastSeekEnd_=-1,this.behindLiveEdge_=!0,this.timeupdateSeen_=!1,this.seekedBehindLive_=!1,this.nextSeekedFromUser_=!1,this.clearInterval(this.trackingInterval_),this.trackingInterval_=null,this.off(this.player_,["play","pause"],this.trackLiveHandler_),this.off(this.player_,"seeked",this.handleSeeked_),this.off(this.player_,"play",this.handlePlay_),this.off(this.player_,"timeupdate",this.handleFirstTimeupdate_),this.off(this.player_,"timeupdate",this.seekToLiveEdge_)}nextSeekedFromUser(){this.nextSeekedFromUser_=!0}stopTracking(){this.isTracking()&&(this.reset_(),this.trigger("liveedgechange"))}seekableEnd(){const seekable=this.player_.seekable(),seekableEnds=[];let i=seekable?seekable.length:0;for(;i--;)seekableEnds.push(seekable.end(i));return seekableEnds.length?seekableEnds.sort()[seekableEnds.length-1]:1/0}seekableStart(){const seekable=this.player_.seekable(),seekableStarts=[];let i=seekable?seekable.length:0;for(;i--;)seekableStarts.push(seekable.start(i));return seekableStarts.length?seekableStarts.sort()[0]:0}liveWindow(){const liveCurrentTime=this.liveCurrentTime();return liveCurrentTime===1/0?0:liveCurrentTime-this.seekableStart()}isLive(){return this.isTracking()}atLiveEdge(){return!this.behindLiveEdge()}liveCurrentTime(){return this.pastSeekEnd()+this.seekableEnd()}pastSeekEnd(){const seekableEnd=this.seekableEnd();return-1!==this.lastSeekEnd_&&seekableEnd!==this.lastSeekEnd_&&(this.pastSeekEnd_=0),this.lastSeekEnd_=seekableEnd,this.pastSeekEnd_}behindLiveEdge(){return this.behindLiveEdge_}isTracking(){return"number"==typeof this.trackingInterval_}seekToLiveEdge(){this.seekedBehindLive_=!1,this.atLiveEdge()||(this.nextSeekedFromUser_=!1,this.player_.currentTime(this.liveCurrentTime()))}dispose(){this.stopTracking(),super.dispose()}});Component$1.registerComponent("TitleBar",class extends Component$1{constructor(player,options){super(player,options),this.on("statechanged",(e=>this.updateDom_())),this.updateDom_()}createEl(){return this.els={title:createEl("div",{className:"vjs-title-bar-title",id:"vjs-title-bar-title-".concat(newGUID())}),description:createEl("div",{className:"vjs-title-bar-description",id:"vjs-title-bar-description-".concat(newGUID())})},createEl("div",{className:"vjs-title-bar"},{},Object.values(this.els))}updateDom_(){const tech=this.player_.tech_,techEl=tech&&tech.el_,techAriaAttrs={title:"aria-labelledby",description:"aria-describedby"};["title","description"].forEach((k=>{const value=this.state[k],el=this.els[k],techAriaAttr=techAriaAttrs[k];emptyEl(el),value&&textContent(el,value),techEl&&(techEl.removeAttribute(techAriaAttr),value&&techEl.setAttribute(techAriaAttr,el.id))})),this.state.title||this.state.description?this.show():this.hide()}update(options){this.setState(options)}dispose(){const tech=this.player_.tech_,techEl=tech&&tech.el_;techEl&&(techEl.removeAttribute("aria-labelledby"),techEl.removeAttribute("aria-describedby")),super.dispose(),this.els=null}});const sourcesetLoad=tech=>{const el=tech.el();if(el.hasAttribute("src"))return tech.triggerSourceset(el.src),!0;const sources=tech.$$("source"),srcUrls=[];let src="";if(!sources.length)return!1;for(let i=0;i<sources.length;i++){const url=sources[i].src;url&&-1===srcUrls.indexOf(url)&&srcUrls.push(url)}return!!srcUrls.length&&(1===srcUrls.length&&(src=srcUrls[0]),tech.triggerSourceset(src),!0)},innerHTMLDescriptorPolyfill=Object.defineProperty({},"innerHTML",{get(){return this.cloneNode(!0).innerHTML},set(v){const dummy=document.createElement(this.nodeName.toLowerCase());dummy.innerHTML=v;const docFrag=document.createDocumentFragment();for(;dummy.childNodes.length;)docFrag.appendChild(dummy.childNodes[0]);return this.innerText="",window.Element.prototype.appendChild.call(this,docFrag),this.innerHTML}}),getDescriptor=(priority,prop)=>{let descriptor={};for(let i=0;i<priority.length&&(descriptor=Object.getOwnPropertyDescriptor(priority[i],prop),!(descriptor&&descriptor.set&&descriptor.get));i++);return descriptor.enumerable=!0,descriptor.configurable=!0,descriptor},firstSourceWatch=function(tech){const el=tech.el();if(el.resetSourceWatch_)return;const old={},innerDescriptor=(tech=>getDescriptor([tech.el(),window.HTMLMediaElement.prototype,window.Element.prototype,innerHTMLDescriptorPolyfill],"innerHTML"))(tech),appendWrapper=appendFn=>function(){for(var _len20=arguments.length,args=new Array(_len20),_key20=0;_key20<_len20;_key20++)args[_key20]=arguments[_key20];const retval=appendFn.apply(el,args);return sourcesetLoad(tech),retval};["append","appendChild","insertAdjacentHTML"].forEach((k=>{el[k]&&(old[k]=el[k],el[k]=appendWrapper(old[k]))})),Object.defineProperty(el,"innerHTML",merge$2(innerDescriptor,{set:appendWrapper(innerDescriptor.set)})),el.resetSourceWatch_=()=>{el.resetSourceWatch_=null,Object.keys(old).forEach((k=>{el[k]=old[k]})),Object.defineProperty(el,"innerHTML",innerDescriptor)},tech.one("sourceset",el.resetSourceWatch_)},srcDescriptorPolyfill=Object.defineProperty({},"src",{get(){return this.hasAttribute("src")?getAbsoluteURL(window.Element.prototype.getAttribute.call(this,"src")):""},set(v){return window.Element.prototype.setAttribute.call(this,"src",v),v}}),setupSourceset=function(tech){if(!tech.featuresSourceset)return;const el=tech.el();if(el.resetSourceset_)return;const srcDescriptor=(tech=>getDescriptor([tech.el(),window.HTMLMediaElement.prototype,srcDescriptorPolyfill],"src"))(tech),oldSetAttribute=el.setAttribute,oldLoad=el.load;Object.defineProperty(el,"src",merge$2(srcDescriptor,{set:v=>{const retval=srcDescriptor.set.call(el,v);return tech.triggerSourceset(el.src),retval}})),el.setAttribute=(n,v)=>{const retval=oldSetAttribute.call(el,n,v);return/src/i.test(n)&&tech.triggerSourceset(el.src),retval},el.load=()=>{const retval=oldLoad.call(el);return sourcesetLoad(tech)||(tech.triggerSourceset(""),firstSourceWatch(tech)),retval},el.currentSrc?tech.triggerSourceset(el.currentSrc):sourcesetLoad(tech)||firstSourceWatch(tech),el.resetSourceset_=()=>{el.resetSourceset_=null,el.load=oldLoad,el.setAttribute=oldSetAttribute,Object.defineProperty(el,"src",srcDescriptor),el.resetSourceWatch_&&el.resetSourceWatch_()}};class Html5 extends Tech{constructor(options,ready){super(options,ready);const source=options.source;let crossoriginTracks=!1;if(this.featuresVideoFrameCallback=this.featuresVideoFrameCallback&&"VIDEO"===this.el_.tagName,source&&(this.el_.currentSrc!==source.src||options.tag&&3===options.tag.initNetworkState_)?this.setSource(source):this.handleLateInit_(this.el_),options.enableSourceset&&this.setupSourcesetHandling_(),this.isScrubbing_=!1,this.el_.hasChildNodes()){const nodes=this.el_.childNodes;let nodesLength=nodes.length;const removeNodes=[];for(;nodesLength--;){const node=nodes[nodesLength];"track"===node.nodeName.toLowerCase()&&(this.featuresNativeTextTracks?(this.remoteTextTrackEls().addTrackElement_(node),this.remoteTextTracks().addTrack(node.track),this.textTracks().addTrack(node.track),crossoriginTracks||this.el_.hasAttribute("crossorigin")||!isCrossOrigin(node.src)||(crossoriginTracks=!0)):removeNodes.push(node))}for(let i=0;i<removeNodes.length;i++)this.el_.removeChild(removeNodes[i])}this.proxyNativeTracks_(),this.featuresNativeTextTracks&&crossoriginTracks&&log$1.warn("Text Tracks are being loaded from another origin but the crossorigin attribute isn't used.\nThis may prevent text tracks from loading."),this.restoreMetadataTracksInIOSNativePlayer_(),(TOUCH_ENABLED||IS_IPHONE)&&!0===options.nativeControlsForTouch&&this.setControls(!0),this.proxyWebkitFullscreen_(),this.triggerReady()}dispose(){this.el_&&this.el_.resetSourceset_&&this.el_.resetSourceset_(),Html5.disposeMediaElement(this.el_),this.options_=null,super.dispose()}setupSourcesetHandling_(){setupSourceset(this)}restoreMetadataTracksInIOSNativePlayer_(){const textTracks=this.textTracks();let metadataTracksPreFullscreenState;const takeMetadataTrackSnapshot=()=>{metadataTracksPreFullscreenState=[];for(let i=0;i<textTracks.length;i++){const track=textTracks[i];"metadata"===track.kind&&metadataTracksPreFullscreenState.push({track:track,storedMode:track.mode})}};takeMetadataTrackSnapshot(),textTracks.addEventListener("change",takeMetadataTrackSnapshot),this.on("dispose",(()=>textTracks.removeEventListener("change",takeMetadataTrackSnapshot)));const restoreTrackMode=()=>{for(let i=0;i<metadataTracksPreFullscreenState.length;i++){const storedTrack=metadataTracksPreFullscreenState[i];"disabled"===storedTrack.track.mode&&storedTrack.track.mode!==storedTrack.storedMode&&(storedTrack.track.mode=storedTrack.storedMode)}textTracks.removeEventListener("change",restoreTrackMode)};this.on("webkitbeginfullscreen",(()=>{textTracks.removeEventListener("change",takeMetadataTrackSnapshot),textTracks.removeEventListener("change",restoreTrackMode),textTracks.addEventListener("change",restoreTrackMode)})),this.on("webkitendfullscreen",(()=>{textTracks.removeEventListener("change",takeMetadataTrackSnapshot),textTracks.addEventListener("change",takeMetadataTrackSnapshot),textTracks.removeEventListener("change",restoreTrackMode)}))}overrideNative_(type,override){if(override!==this["featuresNative".concat(type,"Tracks")])return;const lowerCaseType=type.toLowerCase();this["".concat(lowerCaseType,"TracksListeners_")]&&Object.keys(this["".concat(lowerCaseType,"TracksListeners_")]).forEach((eventName=>{this.el()["".concat(lowerCaseType,"Tracks")].removeEventListener(eventName,this["".concat(lowerCaseType,"TracksListeners_")][eventName])})),this["featuresNative".concat(type,"Tracks")]=!override,this["".concat(lowerCaseType,"TracksListeners_")]=null,this.proxyNativeTracksForType_(lowerCaseType)}overrideNativeAudioTracks(override){this.overrideNative_("Audio",override)}overrideNativeVideoTracks(override){this.overrideNative_("Video",override)}proxyNativeTracksForType_(name){const props=NORMAL[name],elTracks=this.el()[props.getterName],techTracks=this[props.getterName]();if(!this["featuresNative".concat(props.capitalName,"Tracks")]||!elTracks||!elTracks.addEventListener)return;const listeners={change:e=>{const event={type:"change",target:techTracks,currentTarget:techTracks,srcElement:techTracks};techTracks.trigger(event),"text"===name&&this[REMOTE.remoteText.getterName]().trigger(event)},addtrack(e){techTracks.addTrack(e.track)},removetrack(e){techTracks.removeTrack(e.track)}},removeOldTracks=function(){const removeTracks=[];for(let i=0;i<techTracks.length;i++){let found=!1;for(let j=0;j<elTracks.length;j++)if(elTracks[j]===techTracks[i]){found=!0;break}found||removeTracks.push(techTracks[i])}for(;removeTracks.length;)techTracks.removeTrack(removeTracks.shift())};this[props.getterName+"Listeners_"]=listeners,Object.keys(listeners).forEach((eventName=>{const listener=listeners[eventName];elTracks.addEventListener(eventName,listener),this.on("dispose",(e=>elTracks.removeEventListener(eventName,listener)))})),this.on("loadstart",removeOldTracks),this.on("dispose",(e=>this.off("loadstart",removeOldTracks)))}proxyNativeTracks_(){NORMAL.names.forEach((name=>{this.proxyNativeTracksForType_(name)}))}createEl(){let el=this.options_.tag;if(!el||!this.options_.playerElIngest&&!this.movingMediaElementInDOM){if(el){const clone=el.cloneNode(!0);el.parentNode&&el.parentNode.insertBefore(clone,el),Html5.disposeMediaElement(el),el=clone}else{el=document.createElement("video");const attributes=merge$2({},this.options_.tag&&getAttributes(this.options_.tag));TOUCH_ENABLED&&!0===this.options_.nativeControlsForTouch||delete attributes.controls,setAttributes(el,Object.assign(attributes,{id:this.options_.techId,class:"vjs-tech"}))}el.playerId=this.options_.playerId}void 0!==this.options_.preload&&setAttribute(el,"preload",this.options_.preload),void 0!==this.options_.disablePictureInPicture&&(el.disablePictureInPicture=this.options_.disablePictureInPicture);const settingsAttrs=["loop","muted","playsinline","autoplay"];for(let i=0;i<settingsAttrs.length;i++){const attr=settingsAttrs[i],value=this.options_[attr];void 0!==value&&(value?setAttribute(el,attr,attr):removeAttribute(el,attr),el[attr]=value)}return el}handleLateInit_(el){if(0===el.networkState||3===el.networkState)return;if(0===el.readyState){let loadstartFired=!1;const setLoadstartFired=function(){loadstartFired=!0};this.on("loadstart",setLoadstartFired);const triggerLoadstart=function(){loadstartFired||this.trigger("loadstart")};return this.on("loadedmetadata",triggerLoadstart),void this.ready((function(){this.off("loadstart",setLoadstartFired),this.off("loadedmetadata",triggerLoadstart),loadstartFired||this.trigger("loadstart")}))}const eventsToTrigger=["loadstart"];eventsToTrigger.push("loadedmetadata"),el.readyState>=2&&eventsToTrigger.push("loadeddata"),el.readyState>=3&&eventsToTrigger.push("canplay"),el.readyState>=4&&eventsToTrigger.push("canplaythrough"),this.ready((function(){eventsToTrigger.forEach((function(type){this.trigger(type)}),this)}))}setScrubbing(isScrubbing){this.isScrubbing_=isScrubbing}scrubbing(){return this.isScrubbing_}setCurrentTime(seconds){try{this.isScrubbing_&&this.el_.fastSeek&&IS_ANY_SAFARI?this.el_.fastSeek(seconds):this.el_.currentTime=seconds}catch(e){log$1(e,"Video is not ready. (Video.js)")}}duration(){if(this.el_.duration===1/0&&IS_ANDROID&&IS_CHROME&&0===this.el_.currentTime){const checkProgress=()=>{this.el_.currentTime>0&&(this.el_.duration===1/0&&this.trigger("durationchange"),this.off("timeupdate",checkProgress))};return this.on("timeupdate",checkProgress),NaN}return this.el_.duration||NaN}width(){return this.el_.offsetWidth}height(){return this.el_.offsetHeight}proxyWebkitFullscreen_(){if(!("webkitDisplayingFullscreen"in this.el_))return;const endFn=function(){this.trigger("fullscreenchange",{isFullscreen:!1}),this.el_.controls&&!this.options_.nativeControlsForTouch&&this.controls()&&(this.el_.controls=!1)},beginFn=function(){"webkitPresentationMode"in this.el_&&"picture-in-picture"!==this.el_.webkitPresentationMode&&(this.one("webkitendfullscreen",endFn),this.trigger("fullscreenchange",{isFullscreen:!0,nativeIOSFullscreen:!0}))};this.on("webkitbeginfullscreen",beginFn),this.on("dispose",(()=>{this.off("webkitbeginfullscreen",beginFn),this.off("webkitendfullscreen",endFn)}))}supportsFullScreen(){return"function"==typeof this.el_.webkitEnterFullScreen}enterFullScreen(){const video=this.el_;if(video.paused&&video.networkState<=video.HAVE_METADATA)silencePromise(this.el_.play()),this.setTimeout((function(){video.pause();try{video.webkitEnterFullScreen()}catch(e){this.trigger("fullscreenerror",e)}}),0);else try{video.webkitEnterFullScreen()}catch(e){this.trigger("fullscreenerror",e)}}exitFullScreen(){this.el_.webkitDisplayingFullscreen?this.el_.webkitExitFullScreen():this.trigger("fullscreenerror",new Error("The video is not fullscreen"))}requestPictureInPicture(){return this.el_.requestPictureInPicture()}requestVideoFrameCallback(cb){return this.featuresVideoFrameCallback&&!this.el_.webkitKeys?this.el_.requestVideoFrameCallback(cb):super.requestVideoFrameCallback(cb)}cancelVideoFrameCallback(id){this.featuresVideoFrameCallback&&!this.el_.webkitKeys?this.el_.cancelVideoFrameCallback(id):super.cancelVideoFrameCallback(id)}src(src){if(void 0===src)return this.el_.src;this.setSrc(src)}reset(){Html5.resetMediaElement(this.el_)}currentSrc(){return this.currentSource_?this.currentSource_.src:this.el_.currentSrc}setControls(val){this.el_.controls=!!val}addTextTrack(kind,label,language){return this.featuresNativeTextTracks?this.el_.addTextTrack(kind,label,language):super.addTextTrack(kind,label,language)}createRemoteTextTrack(options){if(!this.featuresNativeTextTracks)return super.createRemoteTextTrack(options);const htmlTrackElement=document.createElement("track");return options.kind&&(htmlTrackElement.kind=options.kind),options.label&&(htmlTrackElement.label=options.label),(options.language||options.srclang)&&(htmlTrackElement.srclang=options.language||options.srclang),options.default&&(htmlTrackElement.default=options.default),options.id&&(htmlTrackElement.id=options.id),options.src&&(htmlTrackElement.src=options.src),htmlTrackElement}addRemoteTextTrack(options,manualCleanup){const htmlTrackElement=super.addRemoteTextTrack(options,manualCleanup);return this.featuresNativeTextTracks&&this.el().appendChild(htmlTrackElement),htmlTrackElement}removeRemoteTextTrack(track){if(super.removeRemoteTextTrack(track),this.featuresNativeTextTracks){const tracks=this.$$("track");let i=tracks.length;for(;i--;)track!==tracks[i]&&track!==tracks[i].track||this.el().removeChild(tracks[i])}}getVideoPlaybackQuality(){if("function"==typeof this.el().getVideoPlaybackQuality)return this.el().getVideoPlaybackQuality();const videoPlaybackQuality={};return void 0!==this.el().webkitDroppedFrameCount&&void 0!==this.el().webkitDecodedFrameCount&&(videoPlaybackQuality.droppedVideoFrames=this.el().webkitDroppedFrameCount,videoPlaybackQuality.totalVideoFrames=this.el().webkitDecodedFrameCount),window.performance&&(videoPlaybackQuality.creationTime=window.performance.now()),videoPlaybackQuality}}defineLazyProperty(Html5,"TEST_VID",(function(){if(!isReal())return;const video=document.createElement("video"),track=document.createElement("track");return track.kind="captions",track.srclang="en",track.label="English",video.appendChild(track),video})),Html5.isSupported=function(){try{Html5.TEST_VID.volume=.5}catch(e){return!1}return!(!Html5.TEST_VID||!Html5.TEST_VID.canPlayType)},Html5.canPlayType=function(type){return Html5.TEST_VID.canPlayType(type)},Html5.canPlaySource=function(srcObj,options){return Html5.canPlayType(srcObj.type)},Html5.canControlVolume=function(){try{const volume=Html5.TEST_VID.volume;Html5.TEST_VID.volume=volume/2+.1;const canControl=volume!==Html5.TEST_VID.volume;return canControl&&IS_IOS?(window.setTimeout((()=>{Html5&&Html5.prototype&&(Html5.prototype.featuresVolumeControl=volume!==Html5.TEST_VID.volume)})),!1):canControl}catch(e){return!1}},Html5.canMuteVolume=function(){try{const muted=Html5.TEST_VID.muted;return Html5.TEST_VID.muted=!muted,Html5.TEST_VID.muted?setAttribute(Html5.TEST_VID,"muted","muted"):removeAttribute(Html5.TEST_VID,"muted"),muted!==Html5.TEST_VID.muted}catch(e){return!1}},Html5.canControlPlaybackRate=function(){if(IS_ANDROID&&IS_CHROME&&CHROME_VERSION<58)return!1;try{const playbackRate=Html5.TEST_VID.playbackRate;return Html5.TEST_VID.playbackRate=playbackRate/2+.1,playbackRate!==Html5.TEST_VID.playbackRate}catch(e){return!1}},Html5.canOverrideAttributes=function(){try{const noop=()=>{};Object.defineProperty(document.createElement("video"),"src",{get:noop,set:noop}),Object.defineProperty(document.createElement("audio"),"src",{get:noop,set:noop}),Object.defineProperty(document.createElement("video"),"innerHTML",{get:noop,set:noop}),Object.defineProperty(document.createElement("audio"),"innerHTML",{get:noop,set:noop})}catch(e){return!1}return!0},Html5.supportsNativeTextTracks=function(){return IS_ANY_SAFARI||IS_IOS&&IS_CHROME},Html5.supportsNativeVideoTracks=function(){return!(!Html5.TEST_VID||!Html5.TEST_VID.videoTracks)},Html5.supportsNativeAudioTracks=function(){return!(!Html5.TEST_VID||!Html5.TEST_VID.audioTracks)},Html5.Events=["loadstart","suspend","abort","error","emptied","stalled","loadedmetadata","loadeddata","canplay","canplaythrough","playing","waiting","seeking","seeked","ended","durationchange","timeupdate","progress","play","pause","ratechange","resize","volumechange"],[["featuresMuteControl","canMuteVolume"],["featuresPlaybackRate","canControlPlaybackRate"],["featuresSourceset","canOverrideAttributes"],["featuresNativeTextTracks","supportsNativeTextTracks"],["featuresNativeVideoTracks","supportsNativeVideoTracks"],["featuresNativeAudioTracks","supportsNativeAudioTracks"]].forEach((function(_ref5){let[key,fn]=_ref5;defineLazyProperty(Html5.prototype,key,(()=>Html5[fn]()),!0)})),Html5.prototype.featuresVolumeControl=Html5.canControlVolume(),Html5.prototype.movingMediaElementInDOM=!IS_IOS,Html5.prototype.featuresFullscreenResize=!0,Html5.prototype.featuresProgressEvents=!0,Html5.prototype.featuresTimeupdateEvents=!0,Html5.prototype.featuresVideoFrameCallback=!(!Html5.TEST_VID||!Html5.TEST_VID.requestVideoFrameCallback),Html5.disposeMediaElement=function(el){if(el){for(el.parentNode&&el.parentNode.removeChild(el);el.hasChildNodes();)el.removeChild(el.firstChild);el.removeAttribute("src"),"function"==typeof el.load&&function(){try{el.load()}catch(e){}}()}},Html5.resetMediaElement=function(el){if(!el)return;const sources=el.querySelectorAll("source");let i=sources.length;for(;i--;)el.removeChild(sources[i]);el.removeAttribute("src"),"function"==typeof el.load&&function(){try{el.load()}catch(e){}}()},["muted","defaultMuted","autoplay","controls","loop","playsinline"].forEach((function(prop){Html5.prototype[prop]=function(){return this.el_[prop]||this.el_.hasAttribute(prop)}})),["muted","defaultMuted","autoplay","loop","playsinline"].forEach((function(prop){Html5.prototype["set"+toTitleCase$1(prop)]=function(v){this.el_[prop]=v,v?this.el_.setAttribute(prop,prop):this.el_.removeAttribute(prop)}})),["paused","currentTime","buffered","volume","poster","preload","error","seeking","seekable","ended","playbackRate","defaultPlaybackRate","disablePictureInPicture","played","networkState","readyState","videoWidth","videoHeight","crossOrigin"].forEach((function(prop){Html5.prototype[prop]=function(){return this.el_[prop]}})),["volume","src","poster","preload","playbackRate","defaultPlaybackRate","disablePictureInPicture","crossOrigin"].forEach((function(prop){Html5.prototype["set"+toTitleCase$1(prop)]=function(v){this.el_[prop]=v}})),["pause","load","play"].forEach((function(prop){Html5.prototype[prop]=function(){return this.el_[prop]()}})),Tech.withSourceHandlers(Html5),Html5.nativeSourceHandler={},Html5.nativeSourceHandler.canPlayType=function(type){try{return Html5.TEST_VID.canPlayType(type)}catch(e){return""}},Html5.nativeSourceHandler.canHandleSource=function(source,options){if(source.type)return Html5.nativeSourceHandler.canPlayType(source.type);if(source.src){const ext=getFileExtension(source.src);return Html5.nativeSourceHandler.canPlayType("video/".concat(ext))}return""},Html5.nativeSourceHandler.handleSource=function(source,tech,options){tech.setSrc(source.src)},Html5.nativeSourceHandler.dispose=function(){},Html5.registerSourceHandler(Html5.nativeSourceHandler),Tech.registerTech("Html5",Html5);const TECH_EVENTS_RETRIGGER=["progress","abort","suspend","emptied","stalled","loadedmetadata","loadeddata","timeupdate","resize","volumechange","texttrackchange"],TECH_EVENTS_QUEUE={canplay:"CanPlay",canplaythrough:"CanPlayThrough",playing:"Playing",seeked:"Seeked"},BREAKPOINT_ORDER=["tiny","xsmall","small","medium","large","xlarge","huge"],BREAKPOINT_CLASSES={};BREAKPOINT_ORDER.forEach((k=>{const v="x"===k.charAt(0)?"x-".concat(k.substring(1)):k;BREAKPOINT_CLASSES[k]="vjs-layout-".concat(v)}));const DEFAULT_BREAKPOINTS={tiny:210,xsmall:320,small:425,medium:768,large:1440,xlarge:2560,huge:1/0};class Player extends Component$1{constructor(tag,options,ready){if(tag.id=tag.id||options.id||"vjs_video_".concat(newGUID()),(options=Object.assign(Player.getTagSettings(tag),options)).initChildren=!1,options.createEl=!1,options.evented=!1,options.reportTouchActivity=!1,!options.language){const closest=tag.closest("[lang]");closest&&(options.language=closest.getAttribute("lang"))}if(super(null,options,ready),this.boundDocumentFullscreenChange_=e=>this.documentFullscreenChange_(e),this.boundFullWindowOnEscKey_=e=>this.fullWindowOnEscKey(e),this.boundUpdateStyleEl_=e=>this.updateStyleEl_(e),this.boundApplyInitTime_=e=>this.applyInitTime_(e),this.boundUpdateCurrentBreakpoint_=e=>this.updateCurrentBreakpoint_(e),this.boundHandleTechClick_=e=>this.handleTechClick_(e),this.boundHandleTechDoubleClick_=e=>this.handleTechDoubleClick_(e),this.boundHandleTechTouchStart_=e=>this.handleTechTouchStart_(e),this.boundHandleTechTouchMove_=e=>this.handleTechTouchMove_(e),this.boundHandleTechTouchEnd_=e=>this.handleTechTouchEnd_(e),this.boundHandleTechTap_=e=>this.handleTechTap_(e),this.isFullscreen_=!1,this.log=createLogger(this.id_),this.fsApi_=FullscreenApi,this.isPosterFromTech_=!1,this.queuedCallbacks_=[],this.isReady_=!1,this.hasStarted_=!1,this.userActive_=!1,this.debugEnabled_=!1,this.audioOnlyMode_=!1,this.audioPosterMode_=!1,this.audioOnlyCache_={playerHeight:null,hiddenChildren:[]},!this.options_||!this.options_.techOrder||!this.options_.techOrder.length)throw new Error("No techOrder specified. Did you overwrite videojs.options instead of just changing the properties you want to override?");if(this.tag=tag,this.tagAttributes=tag&&getAttributes(tag),this.language(this.options_.language),options.languages){const languagesToLower={};Object.getOwnPropertyNames(options.languages).forEach((function(name){languagesToLower[name.toLowerCase()]=options.languages[name]})),this.languages_=languagesToLower}else this.languages_=Player.prototype.options_.languages;this.resetCache_(),this.poster_=options.poster||"",this.controls_=!!options.controls,tag.controls=!1,tag.removeAttribute("controls"),this.changingSrc_=!1,this.playCallbacks_=[],this.playTerminatedQueue_=[],tag.hasAttribute("autoplay")?this.autoplay(!0):this.autoplay(this.options_.autoplay),options.plugins&&Object.keys(options.plugins).forEach((name=>{if("function"!=typeof this[name])throw new Error('plugin "'.concat(name,'" does not exist'))})),this.scrubbing_=!1,this.el_=this.createEl(),evented(this,{eventBusKey:"el_"}),this.fsApi_.requestFullscreen&&(on(document,this.fsApi_.fullscreenchange,this.boundDocumentFullscreenChange_),this.on(this.fsApi_.fullscreenchange,this.boundDocumentFullscreenChange_)),this.fluid_&&this.on(["playerreset","resize"],this.boundUpdateStyleEl_);const playerOptionsCopy=merge$2(this.options_);options.plugins&&Object.keys(options.plugins).forEach((name=>{this[name](options.plugins[name])})),options.debug&&this.debug(!0),this.options_.playerOptions=playerOptionsCopy,this.middleware_=[],this.playbackRates(options.playbackRates),this.initChildren(),this.isAudio("audio"===tag.nodeName.toLowerCase()),this.controls()?this.addClass("vjs-controls-enabled"):this.addClass("vjs-controls-disabled"),this.el_.setAttribute("role","region"),this.isAudio()?this.el_.setAttribute("aria-label",this.localize("Audio Player")):this.el_.setAttribute("aria-label",this.localize("Video Player")),this.isAudio()&&this.addClass("vjs-audio"),TOUCH_ENABLED&&this.addClass("vjs-touch-enabled"),IS_IOS||this.addClass("vjs-workinghover"),Player.players[this.id_]=this;const majorVersion="8.3.0".split(".")[0];this.addClass("vjs-v".concat(majorVersion)),this.userActive(!0),this.reportUserActivity(),this.one("play",(e=>this.listenForUserActivity_(e))),this.on("keydown",(e=>this.handleKeyDown(e))),this.on("languagechange",(e=>this.handleLanguagechange(e))),this.breakpoints(this.options_.breakpoints),this.responsive(this.options_.responsive),this.on("ready",(()=>{this.audioPosterMode(this.options_.audioPosterMode),this.audioOnlyMode(this.options_.audioOnlyMode)}))}dispose(){this.trigger("dispose"),this.off("dispose"),off(document,this.fsApi_.fullscreenchange,this.boundDocumentFullscreenChange_),off(document,"keydown",this.boundFullWindowOnEscKey_),this.styleEl_&&this.styleEl_.parentNode&&(this.styleEl_.parentNode.removeChild(this.styleEl_),this.styleEl_=null),Player.players[this.id_]=null,this.tag&&this.tag.player&&(this.tag.player=null),this.el_&&this.el_.player&&(this.el_.player=null),this.tech_&&(this.tech_.dispose(),this.isPosterFromTech_=!1,this.poster_=""),this.playerElIngest_&&(this.playerElIngest_=null),this.tag&&(this.tag=null),middlewareInstances[this.id()]=null,ALL.names.forEach((name=>{const list=this[ALL[name].getterName]();list&&list.off&&list.off()})),super.dispose({restoreEl:this.options_.restoreEl})}createEl(){let el,tag=this.tag,playerElIngest=this.playerElIngest_=tag.parentNode&&tag.parentNode.hasAttribute&&tag.parentNode.hasAttribute("data-vjs-player");const divEmbed="video-js"===this.tag.tagName.toLowerCase();playerElIngest?el=this.el_=tag.parentNode:divEmbed||(el=this.el_=super.createEl("div"));const attrs=getAttributes(tag);if(divEmbed){for(el=this.el_=tag,tag=this.tag=document.createElement("video");el.children.length;)tag.appendChild(el.firstChild);hasClass(el,"video-js")||addClass(el,"video-js"),el.appendChild(tag),playerElIngest=this.playerElIngest_=el,Object.keys(el).forEach((k=>{try{tag[k]=el[k]}catch(e){}}))}if(tag.setAttribute("tabindex","-1"),attrs.tabindex="-1",IS_CHROME&&IS_WINDOWS&&(tag.setAttribute("role","application"),attrs.role="application"),tag.removeAttribute("width"),tag.removeAttribute("height"),"width"in attrs&&delete attrs.width,"height"in attrs&&delete attrs.height,Object.getOwnPropertyNames(attrs).forEach((function(attr){divEmbed&&"class"===attr||el.setAttribute(attr,attrs[attr]),divEmbed&&tag.setAttribute(attr,attrs[attr])})),tag.playerId=tag.id,tag.id+="_html5_api",tag.className="vjs-tech",tag.player=el.player=this,this.addClass("vjs-paused"),!0!==window.VIDEOJS_NO_DYNAMIC_STYLE){this.styleEl_=createStyleElement("vjs-styles-dimensions");const defaultsStyleEl=$(".vjs-styles-defaults"),head=$("head");head.insertBefore(this.styleEl_,defaultsStyleEl?defaultsStyleEl.nextSibling:head.firstChild)}this.fill_=!1,this.fluid_=!1,this.width(this.options_.width),this.height(this.options_.height),this.fill(this.options_.fill),this.fluid(this.options_.fluid),this.aspectRatio(this.options_.aspectRatio),this.crossOrigin(this.options_.crossOrigin||this.options_.crossorigin);const links=tag.getElementsByTagName("a");for(let i=0;i<links.length;i++){const linkEl=links.item(i);addClass(linkEl,"vjs-hidden"),linkEl.setAttribute("hidden","hidden")}return tag.initNetworkState_=tag.networkState,tag.parentNode&&!playerElIngest&&tag.parentNode.insertBefore(el,tag),prependTo(tag,el),this.children_.unshift(tag),this.el_.setAttribute("lang",this.language_),this.el_.setAttribute("translate","no"),this.el_=el,el}crossOrigin(value){if(void 0===value)return this.techGet_("crossOrigin");null===value||"anonymous"===value||"use-credentials"===value?(this.techCall_("setCrossOrigin",value),this.posterImage&&this.posterImage.crossOrigin(value)):log$1.warn('crossOrigin must be null,  "anonymous" or "use-credentials", given "'.concat(value,'"'))}width(value){return this.dimension("width",value)}height(value){return this.dimension("height",value)}dimension(dimension,value){const privDimension=dimension+"_";if(void 0===value)return this[privDimension]||0;if(""===value||"auto"===value)return this[privDimension]=void 0,void this.updateStyleEl_();const parsedVal=parseFloat(value);isNaN(parsedVal)?log$1.error('Improper value "'.concat(value,'" supplied for for ').concat(dimension)):(this[privDimension]=parsedVal,this.updateStyleEl_())}fluid(bool){if(void 0===bool)return!!this.fluid_;var target,callback;this.fluid_=!!bool,isEvented(this)&&this.off(["playerreset","resize"],this.boundUpdateStyleEl_),bool?(this.addClass("vjs-fluid"),this.fill(!1),callback=()=>{this.on(["playerreset","resize"],this.boundUpdateStyleEl_)},isEvented(target=this)?callback():(target.eventedCallbacks||(target.eventedCallbacks=[]),target.eventedCallbacks.push(callback))):this.removeClass("vjs-fluid"),this.updateStyleEl_()}fill(bool){if(void 0===bool)return!!this.fill_;this.fill_=!!bool,bool?(this.addClass("vjs-fill"),this.fluid(!1)):this.removeClass("vjs-fill")}aspectRatio(ratio){if(void 0===ratio)return this.aspectRatio_;if(!/^\d+\:\d+$/.test(ratio))throw new Error("Improper value supplied for aspect ratio. The format should be width:height, for example 16:9.");this.aspectRatio_=ratio,this.fluid(!0),this.updateStyleEl_()}updateStyleEl_(){if(!0===window.VIDEOJS_NO_DYNAMIC_STYLE){const width="number"==typeof this.width_?this.width_:this.options_.width,height="number"==typeof this.height_?this.height_:this.options_.height,techEl=this.tech_&&this.tech_.el();return void(techEl&&(width>=0&&(techEl.width=width),height>=0&&(techEl.height=height)))}let width,height,aspectRatio,idClass;aspectRatio=void 0!==this.aspectRatio_&&"auto"!==this.aspectRatio_?this.aspectRatio_:this.videoWidth()>0?this.videoWidth()+":"+this.videoHeight():"16:9";const ratioParts=aspectRatio.split(":"),ratioMultiplier=ratioParts[1]/ratioParts[0];width=void 0!==this.width_?this.width_:void 0!==this.height_?this.height_/ratioMultiplier:this.videoWidth()||300,height=void 0!==this.height_?this.height_:width*ratioMultiplier,idClass=/^[^a-zA-Z]/.test(this.id())?"dimensions-"+this.id():this.id()+"-dimensions",this.addClass(idClass),setTextContent(this.styleEl_,"\n      .".concat(idClass," {\n        width: ").concat(width,"px;\n        height: ").concat(height,"px;\n      }\n\n      .").concat(idClass,".vjs-fluid:not(.vjs-audio-only-mode) {\n        padding-top: ").concat(100*ratioMultiplier,"%;\n      }\n    "))}loadTech_(techName,source){this.tech_&&this.unloadTech_();const titleTechName=toTitleCase$1(techName),camelTechName=techName.charAt(0).toLowerCase()+techName.slice(1);"Html5"!==titleTechName&&this.tag&&(Tech.getTech("Html5").disposeMediaElement(this.tag),this.tag.player=null,this.tag=null),this.techName_=titleTechName,this.isReady_=!1;let autoplay=this.autoplay();("string"==typeof this.autoplay()||!0===this.autoplay()&&this.options_.normalizeAutoplay)&&(autoplay=!1);const techOptions={source:source,autoplay:autoplay,nativeControlsForTouch:this.options_.nativeControlsForTouch,playerId:this.id(),techId:"".concat(this.id(),"_").concat(camelTechName,"_api"),playsinline:this.options_.playsinline,preload:this.options_.preload,loop:this.options_.loop,disablePictureInPicture:this.options_.disablePictureInPicture,muted:this.options_.muted,poster:this.poster(),language:this.language(),playerElIngest:this.playerElIngest_||!1,"vtt.js":this.options_["vtt.js"],canOverridePoster:!!this.options_.techCanOverridePoster,enableSourceset:this.options_.enableSourceset};ALL.names.forEach((name=>{const props=ALL[name];techOptions[props.getterName]=this[props.privateName]})),Object.assign(techOptions,this.options_[titleTechName]),Object.assign(techOptions,this.options_[camelTechName]),Object.assign(techOptions,this.options_[techName.toLowerCase()]),this.tag&&(techOptions.tag=this.tag),source&&source.src===this.cache_.src&&this.cache_.currentTime>0&&(techOptions.startTime=this.cache_.currentTime);const TechClass=Tech.getTech(techName);if(!TechClass)throw new Error("No Tech named '".concat(titleTechName,"' exists! '").concat(titleTechName,"' should be registered using videojs.registerTech()'"));this.tech_=new TechClass(techOptions),this.tech_.ready(bind_(this,this.handleTechReady_),!0),textTrackConverter_jsonToTextTracks(this.textTracksJson_||[],this.tech_),TECH_EVENTS_RETRIGGER.forEach((event=>{this.on(this.tech_,event,(e=>this["handleTech".concat(toTitleCase$1(event),"_")](e)))})),Object.keys(TECH_EVENTS_QUEUE).forEach((event=>{this.on(this.tech_,event,(eventObj=>{0===this.tech_.playbackRate()&&this.tech_.seeking()?this.queuedCallbacks_.push({callback:this["handleTech".concat(TECH_EVENTS_QUEUE[event],"_")].bind(this),event:eventObj}):this["handleTech".concat(TECH_EVENTS_QUEUE[event],"_")](eventObj)}))})),this.on(this.tech_,"loadstart",(e=>this.handleTechLoadStart_(e))),this.on(this.tech_,"sourceset",(e=>this.handleTechSourceset_(e))),this.on(this.tech_,"waiting",(e=>this.handleTechWaiting_(e))),this.on(this.tech_,"ended",(e=>this.handleTechEnded_(e))),this.on(this.tech_,"seeking",(e=>this.handleTechSeeking_(e))),this.on(this.tech_,"play",(e=>this.handleTechPlay_(e))),this.on(this.tech_,"pause",(e=>this.handleTechPause_(e))),this.on(this.tech_,"durationchange",(e=>this.handleTechDurationChange_(e))),this.on(this.tech_,"fullscreenchange",((e,data)=>this.handleTechFullscreenChange_(e,data))),this.on(this.tech_,"fullscreenerror",((e,err)=>this.handleTechFullscreenError_(e,err))),this.on(this.tech_,"enterpictureinpicture",(e=>this.handleTechEnterPictureInPicture_(e))),this.on(this.tech_,"leavepictureinpicture",(e=>this.handleTechLeavePictureInPicture_(e))),this.on(this.tech_,"error",(e=>this.handleTechError_(e))),this.on(this.tech_,"posterchange",(e=>this.handleTechPosterChange_(e))),this.on(this.tech_,"textdata",(e=>this.handleTechTextData_(e))),this.on(this.tech_,"ratechange",(e=>this.handleTechRateChange_(e))),this.on(this.tech_,"loadedmetadata",this.boundUpdateStyleEl_),this.usingNativeControls(this.techGet_("controls")),this.controls()&&!this.usingNativeControls()&&this.addTechControlsListeners_(),this.tech_.el().parentNode===this.el()||"Html5"===titleTechName&&this.tag||prependTo(this.tech_.el(),this.el()),this.tag&&(this.tag.player=null,this.tag=null)}unloadTech_(){ALL.names.forEach((name=>{const props=ALL[name];this[props.privateName]=this[props.getterName]()})),this.textTracksJson_=textTrackConverter_textTracksToJson(this.tech_),this.isReady_=!1,this.tech_.dispose(),this.tech_=!1,this.isPosterFromTech_&&(this.poster_="",this.trigger("posterchange")),this.isPosterFromTech_=!1}tech(safety){return void 0===safety&&log$1.warn("Using the tech directly can be dangerous. I hope you know what you're doing.\nSee https://github.com/videojs/video.js/issues/2617 for more info.\n"),this.tech_}addTechControlsListeners_(){this.removeTechControlsListeners_(),this.on(this.tech_,"click",this.boundHandleTechClick_),this.on(this.tech_,"dblclick",this.boundHandleTechDoubleClick_),this.on(this.tech_,"touchstart",this.boundHandleTechTouchStart_),this.on(this.tech_,"touchmove",this.boundHandleTechTouchMove_),this.on(this.tech_,"touchend",this.boundHandleTechTouchEnd_),this.on(this.tech_,"tap",this.boundHandleTechTap_)}removeTechControlsListeners_(){this.off(this.tech_,"tap",this.boundHandleTechTap_),this.off(this.tech_,"touchstart",this.boundHandleTechTouchStart_),this.off(this.tech_,"touchmove",this.boundHandleTechTouchMove_),this.off(this.tech_,"touchend",this.boundHandleTechTouchEnd_),this.off(this.tech_,"click",this.boundHandleTechClick_),this.off(this.tech_,"dblclick",this.boundHandleTechDoubleClick_)}handleTechReady_(){this.triggerReady(),this.cache_.volume&&this.techCall_("setVolume",this.cache_.volume),this.handleTechPosterChange_(),this.handleTechDurationChange_()}handleTechLoadStart_(){this.removeClass("vjs-ended","vjs-seeking"),this.error(null),this.handleTechDurationChange_(),this.paused()?(this.hasStarted(!1),this.trigger("loadstart")):this.trigger("loadstart"),this.manualAutoplay_(!0===this.autoplay()&&this.options_.normalizeAutoplay?"play":this.autoplay())}manualAutoplay_(type){if(!this.tech_||"string"!=typeof type)return;const resolveMuted=()=>{const previouslyMuted=this.muted();this.muted(!0);const restoreMuted=()=>{this.muted(previouslyMuted)};this.playTerminatedQueue_.push(restoreMuted);const mutedPromise=this.play();if(isPromise(mutedPromise))return mutedPromise.catch((err=>{throw restoreMuted(),new Error("Rejection at manualAutoplay. Restoring muted value. ".concat(err||""))}))};let promise;return"any"!==type||this.muted()?promise="muted"!==type||this.muted()?this.play():resolveMuted():(promise=this.play(),isPromise(promise)&&(promise=promise.catch(resolveMuted))),isPromise(promise)?promise.then((()=>{this.trigger({type:"autoplay-success",autoplay:type})})).catch((()=>{this.trigger({type:"autoplay-failure",autoplay:type})})):void 0}updateSourceCaches_(){let srcObj=arguments.length>0&&void 0!==arguments[0]?arguments[0]:"",src=srcObj,type="";"string"!=typeof src&&(src=srcObj.src,type=srcObj.type),this.cache_.source=this.cache_.source||{},this.cache_.sources=this.cache_.sources||[],src&&!type&&(type=((player,src)=>{if(!src)return"";if(player.cache_.source.src===src&&player.cache_.source.type)return player.cache_.source.type;const matchingSources=player.cache_.sources.filter((s=>s.src===src));if(matchingSources.length)return matchingSources[0].type;const sources=player.$$("source");for(let i=0;i<sources.length;i++){const s=sources[i];if(s.type&&s.src&&s.src===src)return s.type}return getMimetype(src)})(this,src)),this.cache_.source=merge$2({},srcObj,{src:src,type:type});const matchingSources=this.cache_.sources.filter((s=>s.src&&s.src===src)),sourceElSources=[],sourceEls=this.$$("source"),matchingSourceEls=[];for(let i=0;i<sourceEls.length;i++){const sourceObj=getAttributes(sourceEls[i]);sourceElSources.push(sourceObj),sourceObj.src&&sourceObj.src===src&&matchingSourceEls.push(sourceObj.src)}matchingSourceEls.length&&!matchingSources.length?this.cache_.sources=sourceElSources:matchingSources.length||(this.cache_.sources=[this.cache_.source]),this.cache_.src=src}handleTechSourceset_(event){if(!this.changingSrc_){let updateSourceCaches=src=>this.updateSourceCaches_(src);const playerSrc=this.currentSource().src,eventSrc=event.src;playerSrc&&!/^blob:/.test(playerSrc)&&/^blob:/.test(eventSrc)&&(!this.lastSource_||this.lastSource_.tech!==eventSrc&&this.lastSource_.player!==playerSrc)&&(updateSourceCaches=()=>{}),updateSourceCaches(eventSrc),event.src||this.tech_.any(["sourceset","loadstart"],(e=>{if("sourceset"===e.type)return;const techSrc=this.techGet("currentSrc");this.lastSource_.tech=techSrc,this.updateSourceCaches_(techSrc)}))}this.lastSource_={player:this.currentSource().src,tech:event.src},this.trigger({src:event.src,type:"sourceset"})}hasStarted(request){if(void 0===request)return this.hasStarted_;request!==this.hasStarted_&&(this.hasStarted_=request,this.hasStarted_?this.addClass("vjs-has-started"):this.removeClass("vjs-has-started"))}handleTechPlay_(){this.removeClass("vjs-ended","vjs-paused"),this.addClass("vjs-playing"),this.hasStarted(!0),this.trigger("play")}handleTechRateChange_(){this.tech_.playbackRate()>0&&0===this.cache_.lastPlaybackRate&&(this.queuedCallbacks_.forEach((queued=>queued.callback(queued.event))),this.queuedCallbacks_=[]),this.cache_.lastPlaybackRate=this.tech_.playbackRate(),this.trigger("ratechange")}handleTechWaiting_(){this.addClass("vjs-waiting"),this.trigger("waiting");const timeWhenWaiting=this.currentTime(),timeUpdateListener=()=>{timeWhenWaiting!==this.currentTime()&&(this.removeClass("vjs-waiting"),this.off("timeupdate",timeUpdateListener))};this.on("timeupdate",timeUpdateListener)}handleTechCanPlay_(){this.removeClass("vjs-waiting"),this.trigger("canplay")}handleTechCanPlayThrough_(){this.removeClass("vjs-waiting"),this.trigger("canplaythrough")}handleTechPlaying_(){this.removeClass("vjs-waiting"),this.trigger("playing")}handleTechSeeking_(){this.addClass("vjs-seeking"),this.trigger("seeking")}handleTechSeeked_(){this.removeClass("vjs-seeking","vjs-ended"),this.trigger("seeked")}handleTechPause_(){this.removeClass("vjs-playing"),this.addClass("vjs-paused"),this.trigger("pause")}handleTechEnded_(){this.addClass("vjs-ended"),this.removeClass("vjs-waiting"),this.options_.loop?(this.currentTime(0),this.play()):this.paused()||this.pause(),this.trigger("ended")}handleTechDurationChange_(){this.duration(this.techGet_("duration"))}handleTechClick_(event){this.controls_&&(void 0!==this.options_&&void 0!==this.options_.userActions&&void 0!==this.options_.userActions.click&&!1===this.options_.userActions.click||(void 0!==this.options_&&void 0!==this.options_.userActions&&"function"==typeof this.options_.userActions.click?this.options_.userActions.click.call(this,event):this.paused()?silencePromise(this.play()):this.pause()))}handleTechDoubleClick_(event){if(!this.controls_)return;Array.prototype.some.call(this.$$(".vjs-control-bar, .vjs-modal-dialog"),(el=>el.contains(event.target)))||void 0!==this.options_&&void 0!==this.options_.userActions&&void 0!==this.options_.userActions.doubleClick&&!1===this.options_.userActions.doubleClick||(void 0!==this.options_&&void 0!==this.options_.userActions&&"function"==typeof this.options_.userActions.doubleClick?this.options_.userActions.doubleClick.call(this,event):this.isFullscreen()?this.exitFullscreen():this.requestFullscreen())}handleTechTap_(){this.userActive(!this.userActive())}handleTechTouchStart_(){this.userWasActive=this.userActive()}handleTechTouchMove_(){this.userWasActive&&this.reportUserActivity()}handleTechTouchEnd_(event){event.cancelable&&event.preventDefault()}toggleFullscreenClass_(){this.isFullscreen()?this.addClass("vjs-fullscreen"):this.removeClass("vjs-fullscreen")}documentFullscreenChange_(e){const targetPlayer=e.target.player;if(targetPlayer&&targetPlayer!==this)return;const el=this.el();let isFs=document[this.fsApi_.fullscreenElement]===el;!isFs&&el.matches?isFs=el.matches(":"+this.fsApi_.fullscreen):!isFs&&el.msMatchesSelector&&(isFs=el.msMatchesSelector(":"+this.fsApi_.fullscreen)),this.isFullscreen(isFs)}handleTechFullscreenChange_(event,data){data&&(data.nativeIOSFullscreen&&(this.addClass("vjs-ios-native-fs"),this.tech_.one("webkitendfullscreen",(()=>{this.removeClass("vjs-ios-native-fs")}))),this.isFullscreen(data.isFullscreen))}handleTechFullscreenError_(event,err){this.trigger("fullscreenerror",err)}togglePictureInPictureClass_(){this.isInPictureInPicture()?this.addClass("vjs-picture-in-picture"):this.removeClass("vjs-picture-in-picture")}handleTechEnterPictureInPicture_(event){this.isInPictureInPicture(!0)}handleTechLeavePictureInPicture_(event){this.isInPictureInPicture(!1)}handleTechError_(){const error=this.tech_.error();this.error(error)}handleTechTextData_(){let data=null;arguments.length>1&&(data=arguments[1]),this.trigger("textdata",data)}getCache(){return this.cache_}resetCache_(){this.cache_={currentTime:0,initTime:0,inactivityTimeout:this.options_.inactivityTimeout,duration:NaN,lastVolume:1,lastPlaybackRate:this.defaultPlaybackRate(),media:null,src:"",source:{},sources:[],playbackRates:[],volume:1}}techCall_(method,arg){this.ready((function(){if(method in allowedSetters)return function(middleware,tech,method,arg){return tech[method](middleware.reduce(middlewareIterator(method),arg))}(this.middleware_,this.tech_,method,arg);if(method in allowedMediators)return mediate(this.middleware_,this.tech_,method,arg);try{this.tech_&&this.tech_[method](arg)}catch(e){throw log$1(e),e}}),!0)}techGet_(method){if(this.tech_&&this.tech_.isReady_){if(method in allowedGetters)return function(middleware,tech,method){return middleware.reduceRight(middlewareIterator(method),tech[method]())}(this.middleware_,this.tech_,method);if(method in allowedMediators)return mediate(this.middleware_,this.tech_,method);try{return this.tech_[method]()}catch(e){if(void 0===this.tech_[method])throw log$1("Video.js: ".concat(method," method not defined for ").concat(this.techName_," playback technology."),e),e;if("TypeError"===e.name)throw log$1("Video.js: ".concat(method," unavailable on ").concat(this.techName_," playback technology element."),e),this.tech_.isReady_=!1,e;throw log$1(e),e}}}play(){return new Promise((resolve=>{this.play_(resolve)}))}play_(){let callback=arguments.length>0&&void 0!==arguments[0]?arguments[0]:silencePromise;this.playCallbacks_.push(callback);const isSrcReady=Boolean(!this.changingSrc_&&(this.src()||this.currentSrc())),isSafariOrIOS=Boolean(IS_ANY_SAFARI||IS_IOS);if(this.waitToPlay_&&(this.off(["ready","loadstart"],this.waitToPlay_),this.waitToPlay_=null),!this.isReady_||!isSrcReady)return this.waitToPlay_=e=>{this.play_()},this.one(["ready","loadstart"],this.waitToPlay_),void(!isSrcReady&&isSafariOrIOS&&this.load());const val=this.techGet_("play");isSafariOrIOS&&this.hasClass("vjs-ended")&&this.resetProgressBar_(),null===val?this.runPlayTerminatedQueue_():this.runPlayCallbacks_(val)}runPlayTerminatedQueue_(){const queue=this.playTerminatedQueue_.slice(0);this.playTerminatedQueue_=[],queue.forEach((function(q){q()}))}runPlayCallbacks_(val){const callbacks=this.playCallbacks_.slice(0);this.playCallbacks_=[],this.playTerminatedQueue_=[],callbacks.forEach((function(cb){cb(val)}))}pause(){this.techCall_("pause")}paused(){return!1!==this.techGet_("paused")}played(){return this.techGet_("played")||createTimeRanges$1(0,0)}scrubbing(isScrubbing){if(void 0===isScrubbing)return this.scrubbing_;this.scrubbing_=!!isScrubbing,this.techCall_("setScrubbing",this.scrubbing_),isScrubbing?this.addClass("vjs-scrubbing"):this.removeClass("vjs-scrubbing")}currentTime(seconds){return void 0!==seconds?(seconds<0&&(seconds=0),this.isReady_&&!this.changingSrc_&&this.tech_&&this.tech_.isReady_?(this.techCall_("setCurrentTime",seconds),void(this.cache_.initTime=0)):(this.cache_.initTime=seconds,this.off("canplay",this.boundApplyInitTime_),void this.one("canplay",this.boundApplyInitTime_))):(this.cache_.currentTime=this.techGet_("currentTime")||0,this.cache_.currentTime)}applyInitTime_(){this.currentTime(this.cache_.initTime)}duration(seconds){if(void 0===seconds)return void 0!==this.cache_.duration?this.cache_.duration:NaN;(seconds=parseFloat(seconds))<0&&(seconds=1/0),seconds!==this.cache_.duration&&(this.cache_.duration=seconds,seconds===1/0?this.addClass("vjs-live"):this.removeClass("vjs-live"),isNaN(seconds)||this.trigger("durationchange"))}remainingTime(){return this.duration()-this.currentTime()}remainingTimeDisplay(){return Math.floor(this.duration())-Math.floor(this.currentTime())}buffered(){let buffered=this.techGet_("buffered");return buffered&&buffered.length||(buffered=createTimeRanges$1(0,0)),buffered}bufferedPercent(){return bufferedPercent(this.buffered(),this.duration())}bufferedEnd(){const buffered=this.buffered(),duration=this.duration();let end=buffered.end(buffered.length-1);return end>duration&&(end=duration),end}volume(percentAsDecimal){let vol;return void 0!==percentAsDecimal?(vol=Math.max(0,Math.min(1,parseFloat(percentAsDecimal))),this.cache_.volume=vol,this.techCall_("setVolume",vol),void(vol>0&&this.lastVolume_(vol))):(vol=parseFloat(this.techGet_("volume")),isNaN(vol)?1:vol)}muted(muted){if(void 0===muted)return this.techGet_("muted")||!1;this.techCall_("setMuted",muted)}defaultMuted(defaultMuted){return void 0!==defaultMuted?this.techCall_("setDefaultMuted",defaultMuted):this.techGet_("defaultMuted")||!1}lastVolume_(percentAsDecimal){if(void 0===percentAsDecimal||0===percentAsDecimal)return this.cache_.lastVolume;this.cache_.lastVolume=percentAsDecimal}supportsFullScreen(){return this.techGet_("supportsFullScreen")||!1}isFullscreen(isFS){if(void 0!==isFS){const oldValue=this.isFullscreen_;return this.isFullscreen_=Boolean(isFS),this.isFullscreen_!==oldValue&&this.fsApi_.prefixed&&this.trigger("fullscreenchange"),void this.toggleFullscreenClass_()}return this.isFullscreen_}requestFullscreen(fullscreenOptions){this.isInPictureInPicture()&&this.exitPictureInPicture();const self=this;return new Promise(((resolve,reject)=>{function offHandler(){self.off("fullscreenerror",errorHandler),self.off("fullscreenchange",changeHandler)}function changeHandler(){offHandler(),resolve()}function errorHandler(e,err){offHandler(),reject(err)}self.one("fullscreenchange",changeHandler),self.one("fullscreenerror",errorHandler);const promise=self.requestFullscreenHelper_(fullscreenOptions);promise&&(promise.then(offHandler,offHandler),promise.then(resolve,reject))}))}requestFullscreenHelper_(fullscreenOptions){let fsOptions;if(this.fsApi_.prefixed||(fsOptions=this.options_.fullscreen&&this.options_.fullscreen.options||{},void 0!==fullscreenOptions&&(fsOptions=fullscreenOptions)),this.fsApi_.requestFullscreen){const promise=this.el_[this.fsApi_.requestFullscreen](fsOptions);return promise&&promise.then((()=>this.isFullscreen(!0)),(()=>this.isFullscreen(!1))),promise}this.tech_.supportsFullScreen()&&!0==!this.options_.preferFullWindow?this.techCall_("enterFullScreen"):this.enterFullWindow()}exitFullscreen(){const self=this;return new Promise(((resolve,reject)=>{function offHandler(){self.off("fullscreenerror",errorHandler),self.off("fullscreenchange",changeHandler)}function changeHandler(){offHandler(),resolve()}function errorHandler(e,err){offHandler(),reject(err)}self.one("fullscreenchange",changeHandler),self.one("fullscreenerror",errorHandler);const promise=self.exitFullscreenHelper_();promise&&(promise.then(offHandler,offHandler),promise.then(resolve,reject))}))}exitFullscreenHelper_(){if(this.fsApi_.requestFullscreen){const promise=document[this.fsApi_.exitFullscreen]();return promise&&silencePromise(promise.then((()=>this.isFullscreen(!1)))),promise}this.tech_.supportsFullScreen()&&!0==!this.options_.preferFullWindow?this.techCall_("exitFullScreen"):this.exitFullWindow()}enterFullWindow(){this.isFullscreen(!0),this.isFullWindow=!0,this.docOrigOverflow=document.documentElement.style.overflow,on(document,"keydown",this.boundFullWindowOnEscKey_),document.documentElement.style.overflow="hidden",addClass(document.body,"vjs-full-window"),this.trigger("enterFullWindow")}fullWindowOnEscKey(event){keycode.isEventKey(event,"Esc")&&!0===this.isFullscreen()&&(this.isFullWindow?this.exitFullWindow():this.exitFullscreen())}exitFullWindow(){this.isFullscreen(!1),this.isFullWindow=!1,off(document,"keydown",this.boundFullWindowOnEscKey_),document.documentElement.style.overflow=this.docOrigOverflow,removeClass(document.body,"vjs-full-window"),this.trigger("exitFullWindow")}disablePictureInPicture(value){if(void 0===value)return this.techGet_("disablePictureInPicture");this.techCall_("setDisablePictureInPicture",value),this.options_.disablePictureInPicture=value,this.trigger("disablepictureinpicturechanged")}isInPictureInPicture(isPiP){return void 0!==isPiP?(this.isInPictureInPicture_=!!isPiP,void this.togglePictureInPictureClass_()):!!this.isInPictureInPicture_}requestPictureInPicture(){if(this.options_.enableDocumentPictureInPicture&&window.documentPictureInPicture){const pipContainer=document.createElement(this.el().tagName);return pipContainer.classList=this.el().classList,pipContainer.classList.add("vjs-pip-container"),this.posterImage&&pipContainer.appendChild(this.posterImage.el().cloneNode(!0)),this.titleBar&&pipContainer.appendChild(this.titleBar.el().cloneNode(!0)),pipContainer.appendChild(createEl("p",{className:"vjs-pip-text"},{},this.localize("Playing in picture-in-picture"))),window.documentPictureInPicture.requestWindow({initialAspectRatio:this.videoWidth()/this.videoHeight(),copyStyleSheets:!0}).then((pipWindow=>(this.el_.parentNode.insertBefore(pipContainer,this.el_),pipWindow.document.body.append(this.el_),pipWindow.document.body.classList.add("vjs-pip-window"),this.player_.isInPictureInPicture(!0),this.player_.trigger("enterpictureinpicture"),pipWindow.addEventListener("unload",(event=>{const pipVideo=event.target.querySelector(".video-js");pipContainer.replaceWith(pipVideo),this.player_.isInPictureInPicture(!1),this.player_.trigger("leavepictureinpicture")})),pipWindow)))}return"pictureInPictureEnabled"in document&&!1===this.disablePictureInPicture()?this.techGet_("requestPictureInPicture"):Promise.reject("No PiP mode is available")}exitPictureInPicture(){return window.documentPictureInPicture&&window.documentPictureInPicture.window?(window.documentPictureInPicture.window.close(),Promise.resolve()):"pictureInPictureEnabled"in document?document.exitPictureInPicture():void 0}handleKeyDown(event){const{userActions:userActions}=this.options_;if(!userActions||!userActions.hotkeys)return;(el=>{const tagName=el.tagName.toLowerCase();if(el.isContentEditable)return!0;if("input"===tagName)return-1===["button","checkbox","hidden","radio","reset","submit"].indexOf(el.type);return-1!==["textarea"].indexOf(tagName)})(this.el_.ownerDocument.activeElement)||("function"==typeof userActions.hotkeys?userActions.hotkeys.call(this,event):this.handleHotkeys(event))}handleHotkeys(event){const hotkeys=this.options_.userActions?this.options_.userActions.hotkeys:{},{fullscreenKey:fullscreenKey=(keydownEvent=>keycode.isEventKey(keydownEvent,"f")),muteKey:muteKey=(keydownEvent=>keycode.isEventKey(keydownEvent,"m")),playPauseKey:playPauseKey=(keydownEvent=>keycode.isEventKey(keydownEvent,"k")||keycode.isEventKey(keydownEvent,"Space"))}=hotkeys;if(fullscreenKey.call(this,event)){event.preventDefault(),event.stopPropagation();const FSToggle=Component$1.getComponent("FullscreenToggle");!1!==document[this.fsApi_.fullscreenEnabled]&&FSToggle.prototype.handleClick.call(this,event)}else if(muteKey.call(this,event)){event.preventDefault(),event.stopPropagation();Component$1.getComponent("MuteToggle").prototype.handleClick.call(this,event)}else if(playPauseKey.call(this,event)){event.preventDefault(),event.stopPropagation();Component$1.getComponent("PlayToggle").prototype.handleClick.call(this,event)}}canPlayType(type){let can;for(let i=0,j=this.options_.techOrder;i<j.length;i++){const techName=j[i];let tech=Tech.getTech(techName);if(tech||(tech=Component$1.getComponent(techName)),tech){if(tech.isSupported()&&(can=tech.canPlayType(type),can))return can}else log$1.error('The "'.concat(techName,'" tech is undefined. Skipped browser support check for that tech.'))}return""}selectSource(sources){const techs=this.options_.techOrder.map((techName=>[techName,Tech.getTech(techName)])).filter((_ref6=>{let[techName,tech]=_ref6;return tech?tech.isSupported():(log$1.error('The "'.concat(techName,'" tech is undefined. Skipped browser support check for that tech.')),!1)})),findFirstPassingTechSourcePair=function(outerArray,innerArray,tester){let found;return outerArray.some((outerChoice=>innerArray.some((innerChoice=>{if(found=tester(outerChoice,innerChoice),found)return!0})))),found};let foundSourceAndTech;const finder=(_ref7,source)=>{let[techName,tech]=_ref7;if(tech.canPlaySource(source,this.options_[techName.toLowerCase()]))return{source:source,tech:techName}};var fn;return foundSourceAndTech=this.options_.sourceOrder?findFirstPassingTechSourcePair(sources,techs,(fn=finder,(a,b)=>fn(b,a))):findFirstPassingTechSourcePair(techs,sources,finder),foundSourceAndTech||!1}handleSrc_(source,isRetry){if(void 0===source)return this.cache_.src||"";this.resetRetryOnError_&&this.resetRetryOnError_();const sources=filterSource(source);if(sources.length){if(this.changingSrc_=!0,isRetry||(this.cache_.sources=sources),this.updateSourceCaches_(sources[0]),setSource(this,sources[0],((middlewareSource,mws)=>{this.middleware_=mws,isRetry||(this.cache_.sources=sources),this.updateSourceCaches_(middlewareSource);if(this.src_(middlewareSource))return sources.length>1?this.handleSrc_(sources.slice(1)):(this.changingSrc_=!1,this.setTimeout((function(){this.error({code:4,message:this.options_.notSupportedMessage})}),0),void this.triggerReady());var middleware,tech;middleware=mws,tech=this.tech_,middleware.forEach((mw=>mw.setTech&&mw.setTech(tech)))})),sources.length>1){const retry=()=>{this.error(null),this.handleSrc_(sources.slice(1),!0)},stopListeningForErrors=()=>{this.off("error",retry)};this.one("error",retry),this.one("playing",stopListeningForErrors),this.resetRetryOnError_=()=>{this.off("error",retry),this.off("playing",stopListeningForErrors)}}}else this.setTimeout((function(){this.error({code:4,message:this.options_.notSupportedMessage})}),0)}src(source){return this.handleSrc_(source,!1)}src_(source){const sourceTech=this.selectSource([source]);return!sourceTech||(titleCaseEquals(sourceTech.tech,this.techName_)?(this.ready((function(){this.tech_.constructor.prototype.hasOwnProperty("setSource")?this.techCall_("setSource",source):this.techCall_("src",source.src),this.changingSrc_=!1}),!0),!1):(this.changingSrc_=!0,this.loadTech_(sourceTech.tech,sourceTech.source),this.tech_.ready((()=>{this.changingSrc_=!1})),!1))}load(){this.techCall_("load")}reset(){if(this.paused())this.doReset_();else{silencePromise(this.play().then((()=>this.doReset_())))}}doReset_(){this.tech_&&this.tech_.clearTracks("text"),this.resetCache_(),this.poster(""),this.loadTech_(this.options_.techOrder[0],null),this.techCall_("reset"),this.resetControlBarUI_(),isEvented(this)&&this.trigger("playerreset")}resetControlBarUI_(){this.resetProgressBar_(),this.resetPlaybackRate_(),this.resetVolumeBar_()}resetProgressBar_(){this.currentTime(0);const{currentTimeDisplay:currentTimeDisplay,durationDisplay:durationDisplay,progressControl:progressControl,remainingTimeDisplay:remainingTimeDisplay}=this.controlBar||{},{seekBar:seekBar}=progressControl||{};currentTimeDisplay&&currentTimeDisplay.updateContent(),durationDisplay&&durationDisplay.updateContent(),remainingTimeDisplay&&remainingTimeDisplay.updateContent(),seekBar&&(seekBar.update(),seekBar.loadProgressBar&&seekBar.loadProgressBar.update())}resetPlaybackRate_(){this.playbackRate(this.defaultPlaybackRate()),this.handleTechRateChange_()}resetVolumeBar_(){this.volume(1),this.trigger("volumechange")}currentSources(){const source=this.currentSource(),sources=[];return 0!==Object.keys(source).length&&sources.push(source),this.cache_.sources||sources}currentSource(){return this.cache_.source||{}}currentSrc(){return this.currentSource()&&this.currentSource().src||""}currentType(){return this.currentSource()&&this.currentSource().type||""}preload(value){return void 0!==value?(this.techCall_("setPreload",value),void(this.options_.preload=value)):this.techGet_("preload")}autoplay(value){if(void 0===value)return this.options_.autoplay||!1;let techAutoplay;"string"==typeof value&&/(any|play|muted)/.test(value)||!0===value&&this.options_.normalizeAutoplay?(this.options_.autoplay=value,this.manualAutoplay_("string"==typeof value?value:"play"),techAutoplay=!1):this.options_.autoplay=!!value,techAutoplay=void 0===techAutoplay?this.options_.autoplay:techAutoplay,this.tech_&&this.techCall_("setAutoplay",techAutoplay)}playsinline(value){return void 0!==value?(this.techCall_("setPlaysinline",value),this.options_.playsinline=value,this):this.techGet_("playsinline")}loop(value){return void 0!==value?(this.techCall_("setLoop",value),void(this.options_.loop=value)):this.techGet_("loop")}poster(src){if(void 0===src)return this.poster_;src||(src=""),src!==this.poster_&&(this.poster_=src,this.techCall_("setPoster",src),this.isPosterFromTech_=!1,this.trigger("posterchange"))}handleTechPosterChange_(){if((!this.poster_||this.options_.techCanOverridePoster)&&this.tech_&&this.tech_.poster){const newPoster=this.tech_.poster()||"";newPoster!==this.poster_&&(this.poster_=newPoster,this.isPosterFromTech_=!0,this.trigger("posterchange"))}}controls(bool){if(void 0===bool)return!!this.controls_;bool=!!bool,this.controls_!==bool&&(this.controls_=bool,this.usingNativeControls()&&this.techCall_("setControls",bool),this.controls_?(this.removeClass("vjs-controls-disabled"),this.addClass("vjs-controls-enabled"),this.trigger("controlsenabled"),this.usingNativeControls()||this.addTechControlsListeners_()):(this.removeClass("vjs-controls-enabled"),this.addClass("vjs-controls-disabled"),this.trigger("controlsdisabled"),this.usingNativeControls()||this.removeTechControlsListeners_()))}usingNativeControls(bool){if(void 0===bool)return!!this.usingNativeControls_;bool=!!bool,this.usingNativeControls_!==bool&&(this.usingNativeControls_=bool,this.usingNativeControls_?(this.addClass("vjs-using-native-controls"),this.trigger("usingnativecontrols")):(this.removeClass("vjs-using-native-controls"),this.trigger("usingcustomcontrols")))}error(err){if(void 0===err)return this.error_||null;if(hooks("beforeerror").forEach((hookFunction=>{const newErr=hookFunction(this,err);isObject$1(newErr)&&!Array.isArray(newErr)||"string"==typeof newErr||"number"==typeof newErr||null===newErr?err=newErr:this.log.error("please return a value that MediaError expects in beforeerror hooks")})),this.options_.suppressNotSupportedError&&err&&4===err.code){const triggerSuppressedError=function(){this.error(err)};return this.options_.suppressNotSupportedError=!1,this.any(["click","touchstart"],triggerSuppressedError),void this.one("loadstart",(function(){this.off(["click","touchstart"],triggerSuppressedError)}))}if(null===err)return this.error_=err,this.removeClass("vjs-error"),void(this.errorDisplay&&this.errorDisplay.close());this.error_=new MediaError(err),this.addClass("vjs-error"),log$1.error("(CODE:".concat(this.error_.code," ").concat(MediaError.errorTypes[this.error_.code],")"),this.error_.message,this.error_),this.trigger("error"),hooks("error").forEach((hookFunction=>hookFunction(this,this.error_)))}reportUserActivity(event){this.userActivity_=!0}userActive(bool){if(void 0===bool)return this.userActive_;if((bool=!!bool)!==this.userActive_){if(this.userActive_=bool,this.userActive_)return this.userActivity_=!0,this.removeClass("vjs-user-inactive"),this.addClass("vjs-user-active"),void this.trigger("useractive");this.tech_&&this.tech_.one("mousemove",(function(e){e.stopPropagation(),e.preventDefault()})),this.userActivity_=!1,this.removeClass("vjs-user-active"),this.addClass("vjs-user-inactive"),this.trigger("userinactive")}}listenForUserActivity_(){let mouseInProgress,lastMoveX,lastMoveY;const handleActivity=bind_(this,this.reportUserActivity),handleMouseUpAndMouseLeave=function(event){handleActivity(),this.clearInterval(mouseInProgress)};this.on("mousedown",(function(){handleActivity(),this.clearInterval(mouseInProgress),mouseInProgress=this.setInterval(handleActivity,250)})),this.on("mousemove",(function(e){e.screenX===lastMoveX&&e.screenY===lastMoveY||(lastMoveX=e.screenX,lastMoveY=e.screenY,handleActivity())})),this.on("mouseup",handleMouseUpAndMouseLeave),this.on("mouseleave",handleMouseUpAndMouseLeave);const controlBar=this.getChild("controlBar");let inactivityTimeout;!controlBar||IS_IOS||IS_ANDROID||(controlBar.on("mouseenter",(function(event){0!==this.player().options_.inactivityTimeout&&(this.player().cache_.inactivityTimeout=this.player().options_.inactivityTimeout),this.player().options_.inactivityTimeout=0})),controlBar.on("mouseleave",(function(event){this.player().options_.inactivityTimeout=this.player().cache_.inactivityTimeout}))),this.on("keydown",handleActivity),this.on("keyup",handleActivity),this.setInterval((function(){if(!this.userActivity_)return;this.userActivity_=!1,this.userActive(!0),this.clearTimeout(inactivityTimeout);const timeout=this.options_.inactivityTimeout;timeout<=0||(inactivityTimeout=this.setTimeout((function(){this.userActivity_||this.userActive(!1)}),timeout))}),250)}playbackRate(rate){if(void 0===rate)return this.tech_&&this.tech_.featuresPlaybackRate?this.cache_.lastPlaybackRate||this.techGet_("playbackRate"):1;this.techCall_("setPlaybackRate",rate)}defaultPlaybackRate(rate){return void 0!==rate?this.techCall_("setDefaultPlaybackRate",rate):this.tech_&&this.tech_.featuresPlaybackRate?this.techGet_("defaultPlaybackRate"):1}isAudio(bool){if(void 0===bool)return!!this.isAudio_;this.isAudio_=!!bool}enableAudioOnlyUI_(){this.addClass("vjs-audio-only-mode");const playerChildren=this.children(),controlBar=this.getChild("ControlBar"),controlBarHeight=controlBar&&controlBar.currentHeight();playerChildren.forEach((child=>{child!==controlBar&&child.el_&&!child.hasClass("vjs-hidden")&&(child.hide(),this.audioOnlyCache_.hiddenChildren.push(child))})),this.audioOnlyCache_.playerHeight=this.currentHeight(),this.height(controlBarHeight),this.trigger("audioonlymodechange")}disableAudioOnlyUI_(){this.removeClass("vjs-audio-only-mode"),this.audioOnlyCache_.hiddenChildren.forEach((child=>child.show())),this.height(this.audioOnlyCache_.playerHeight),this.trigger("audioonlymodechange")}audioOnlyMode(value){if("boolean"!=typeof value||value===this.audioOnlyMode_)return this.audioOnlyMode_;if(this.audioOnlyMode_=value,value){const exitPromises=[];return this.isInPictureInPicture()&&exitPromises.push(this.exitPictureInPicture()),this.isFullscreen()&&exitPromises.push(this.exitFullscreen()),this.audioPosterMode()&&exitPromises.push(this.audioPosterMode(!1)),Promise.all(exitPromises).then((()=>this.enableAudioOnlyUI_()))}return Promise.resolve().then((()=>this.disableAudioOnlyUI_()))}enablePosterModeUI_(){(this.tech_&&this.tech_).hide(),this.addClass("vjs-audio-poster-mode"),this.trigger("audiopostermodechange")}disablePosterModeUI_(){(this.tech_&&this.tech_).show(),this.removeClass("vjs-audio-poster-mode"),this.trigger("audiopostermodechange")}audioPosterMode(value){if("boolean"!=typeof value||value===this.audioPosterMode_)return this.audioPosterMode_;if(this.audioPosterMode_=value,value){if(this.audioOnlyMode()){return this.audioOnlyMode(!1).then((()=>{this.enablePosterModeUI_()}))}return Promise.resolve().then((()=>{this.enablePosterModeUI_()}))}return Promise.resolve().then((()=>{this.disablePosterModeUI_()}))}addTextTrack(kind,label,language){if(this.tech_)return this.tech_.addTextTrack(kind,label,language)}addRemoteTextTrack(options,manualCleanup){if(this.tech_)return this.tech_.addRemoteTextTrack(options,manualCleanup)}removeRemoteTextTrack(){let obj=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},{track:track}=obj;if(track||(track=obj),this.tech_)return this.tech_.removeRemoteTextTrack(track)}getVideoPlaybackQuality(){return this.techGet_("getVideoPlaybackQuality")}videoWidth(){return this.tech_&&this.tech_.videoWidth&&this.tech_.videoWidth()||0}videoHeight(){return this.tech_&&this.tech_.videoHeight&&this.tech_.videoHeight()||0}language(code){if(void 0===code)return this.language_;this.language_!==String(code).toLowerCase()&&(this.language_=String(code).toLowerCase(),isEvented(this)&&this.trigger("languagechange"))}languages(){return merge$2(Player.prototype.options_.languages,this.languages_)}toJSON(){const options=merge$2(this.options_),tracks=options.tracks;options.tracks=[];for(let i=0;i<tracks.length;i++){let track=tracks[i];track=merge$2(track),track.player=void 0,options.tracks[i]=track}return options}createModal(content,options){(options=options||{}).content=content||"";const modal=new ModalDialog(this,options);return this.addChild(modal),modal.on("dispose",(()=>{this.removeChild(modal)})),modal.open(),modal}updateCurrentBreakpoint_(){if(!this.responsive())return;const currentBreakpoint=this.currentBreakpoint(),currentWidth=this.currentWidth();for(let i=0;i<BREAKPOINT_ORDER.length;i++){const candidateBreakpoint=BREAKPOINT_ORDER[i];if(currentWidth<=this.breakpoints_[candidateBreakpoint]){if(currentBreakpoint===candidateBreakpoint)return;currentBreakpoint&&this.removeClass(BREAKPOINT_CLASSES[currentBreakpoint]),this.addClass(BREAKPOINT_CLASSES[candidateBreakpoint]),this.breakpoint_=candidateBreakpoint;break}}}removeCurrentBreakpoint_(){const className=this.currentBreakpointClass();this.breakpoint_="",className&&this.removeClass(className)}breakpoints(breakpoints){return void 0===breakpoints||(this.breakpoint_="",this.breakpoints_=Object.assign({},DEFAULT_BREAKPOINTS,breakpoints),this.updateCurrentBreakpoint_()),Object.assign(this.breakpoints_)}responsive(value){if(void 0===value)return this.responsive_;return(value=Boolean(value))!==this.responsive_?(this.responsive_=value,value?(this.on("playerresize",this.boundUpdateCurrentBreakpoint_),this.updateCurrentBreakpoint_()):(this.off("playerresize",this.boundUpdateCurrentBreakpoint_),this.removeCurrentBreakpoint_()),value):void 0}currentBreakpoint(){return this.breakpoint_}currentBreakpointClass(){return BREAKPOINT_CLASSES[this.breakpoint_]||""}loadMedia(media,ready){if(!media||"object"!=typeof media)return;this.reset(),this.cache_.media=merge$2(media);const{artist:artist,artwork:artwork,description:description,poster:poster,src:src,textTracks:textTracks,title:title}=this.cache_.media;!artwork&&poster&&(this.cache_.media.artwork=[{src:poster,type:getMimetype(poster)}]),src&&this.src(src),poster&&this.poster(poster),Array.isArray(textTracks)&&textTracks.forEach((tt=>this.addRemoteTextTrack(tt,!1))),this.titleBar&&this.titleBar.update({title:title,description:description||artist||""}),this.ready(ready)}getMedia(){if(!this.cache_.media){const poster=this.poster(),media={src:this.currentSources(),textTracks:Array.prototype.map.call(this.remoteTextTracks(),(tt=>({kind:tt.kind,label:tt.label,language:tt.language,src:tt.src})))};return poster&&(media.poster=poster,media.artwork=[{src:media.poster,type:getMimetype(media.poster)}]),media}return merge$2(this.cache_.media)}static getTagSettings(tag){const baseOptions={sources:[],tracks:[]},tagOptions=getAttributes(tag),dataSetup=tagOptions["data-setup"];if(hasClass(tag,"vjs-fill")&&(tagOptions.fill=!0),hasClass(tag,"vjs-fluid")&&(tagOptions.fluid=!0),null!==dataSetup){const[err,data]=tuple(dataSetup||"{}");err&&log$1.error(err),Object.assign(tagOptions,data)}if(Object.assign(baseOptions,tagOptions),tag.hasChildNodes()){const children=tag.childNodes;for(let i=0,j=children.length;i<j;i++){const child=children[i],childName=child.nodeName.toLowerCase();"source"===childName?baseOptions.sources.push(getAttributes(child)):"track"===childName&&baseOptions.tracks.push(getAttributes(child))}}return baseOptions}debug(enabled){if(void 0===enabled)return this.debugEnabled_;enabled?(this.trigger("debugon"),this.previousLogLevel_=this.log.level,this.log.level("debug"),this.debugEnabled_=!0):(this.trigger("debugoff"),this.log.level(this.previousLogLevel_),this.previousLogLevel_=void 0,this.debugEnabled_=!1)}playbackRates(newRates){if(void 0===newRates)return this.cache_.playbackRates;Array.isArray(newRates)&&newRates.every((rate=>"number"==typeof rate))&&(this.cache_.playbackRates=newRates,this.trigger("playbackrateschange"))}}ALL.names.forEach((function(name){const props=ALL[name];Player.prototype[props.getterName]=function(){return this.tech_?this.tech_[props.getterName]():(this[props.privateName]=this[props.privateName]||new props.ListClass,this[props.privateName])}})),Player.prototype.crossorigin=Player.prototype.crossOrigin,Player.players={};const navigator=window.navigator;Player.prototype.options_={techOrder:Tech.defaultTechOrder_,html5:{},enableSourceset:!0,inactivityTimeout:2e3,playbackRates:[],liveui:!1,children:["mediaLoader","posterImage","titleBar","textTrackDisplay","loadingSpinner","bigPlayButton","liveTracker","controlBar","errorDisplay","textTrackSettings","resizeManager"],language:navigator&&(navigator.languages&&navigator.languages[0]||navigator.userLanguage||navigator.language)||"en",languages:{},notSupportedMessage:"No compatible source was found for this media.",normalizeAutoplay:!1,fullscreen:{options:{navigationUI:"hide"}},breakpoints:{},responsive:!1,audioOnlyMode:!1,audioPosterMode:!1},["ended","seeking","seekable","networkState","readyState"].forEach((function(fn){Player.prototype[fn]=function(){return this.techGet_(fn)}})),TECH_EVENTS_RETRIGGER.forEach((function(event){Player.prototype["handleTech".concat(toTitleCase$1(event),"_")]=function(){return this.trigger(event)}})),Component$1.registerComponent("Player",Player);const pluginStorage={},pluginExists=name=>pluginStorage.hasOwnProperty(name),getPlugin=name=>pluginExists(name)?pluginStorage[name]:void 0,markPluginAsActive=(player,name)=>{player.activePlugins_=player.activePlugins_||{},player.activePlugins_[name]=!0},triggerSetupEvent=(player,hash,before)=>{const eventName=(before?"before":"")+"pluginsetup";player.trigger(eventName,hash),player.trigger(eventName+":"+hash.name,hash)},createPluginFactory=(name,PluginSubClass)=>(PluginSubClass.prototype.name=name,function(){triggerSetupEvent(this,{name:name,plugin:PluginSubClass,instance:null},!0);for(var _len21=arguments.length,args=new Array(_len21),_key21=0;_key21<_len21;_key21++)args[_key21]=arguments[_key21];const instance=new PluginSubClass(...[this,...args]);return this[name]=()=>instance,triggerSetupEvent(this,instance.getEventHash()),instance});class Plugin{constructor(player){if(this.constructor===Plugin)throw new Error("Plugin must be sub-classed; not directly instantiated.");this.player=player,this.log||(this.log=this.player.log.createLogger(this.name)),evented(this),delete this.trigger,stateful(this,this.constructor.defaultState),markPluginAsActive(player,this.name),this.dispose=this.dispose.bind(this),player.on("dispose",this.dispose)}version(){return this.constructor.VERSION}getEventHash(){let hash=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};return hash.name=this.name,hash.plugin=this.constructor,hash.instance=this,hash}trigger(event){let hash=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};return trigger(this.eventBusEl_,event,this.getEventHash(hash))}handleStateChanged(e){}dispose(){const{name:name,player:player}=this;this.trigger("dispose"),this.off(),player.off("dispose",this.dispose),player.activePlugins_[name]=!1,this.player=this.state=null,player[name]=createPluginFactory(name,pluginStorage[name])}static isBasic(plugin){const p="string"==typeof plugin?getPlugin(plugin):plugin;return"function"==typeof p&&!Plugin.prototype.isPrototypeOf(p.prototype)}static registerPlugin(name,plugin){if("string"!=typeof name)throw new Error('Illegal plugin name, "'.concat(name,'", must be a string, was ').concat(typeof name,"."));if(pluginExists(name))log$1.warn('A plugin named "'.concat(name,'" already exists. You may want to avoid re-registering plugins!'));else if(Player.prototype.hasOwnProperty(name))throw new Error('Illegal plugin name, "'.concat(name,'", cannot share a name with an existing player method!'));if("function"!=typeof plugin)throw new Error('Illegal plugin for "'.concat(name,'", must be a function, was ').concat(typeof plugin,"."));return pluginStorage[name]=plugin,"plugin"!==name&&(Plugin.isBasic(plugin)?Player.prototype[name]=function(name,plugin){const basicPluginWrapper=function(){triggerSetupEvent(this,{name:name,plugin:plugin,instance:null},!0);const instance=plugin.apply(this,arguments);return markPluginAsActive(this,name),triggerSetupEvent(this,{name:name,plugin:plugin,instance:instance}),instance};return Object.keys(plugin).forEach((function(prop){basicPluginWrapper[prop]=plugin[prop]})),basicPluginWrapper}(name,plugin):Player.prototype[name]=createPluginFactory(name,plugin)),plugin}static deregisterPlugin(name){if("plugin"===name)throw new Error("Cannot de-register base plugin.");pluginExists(name)&&(delete pluginStorage[name],delete Player.prototype[name])}static getPlugins(){let result;return(arguments.length>0&&void 0!==arguments[0]?arguments[0]:Object.keys(pluginStorage)).forEach((name=>{const plugin=getPlugin(name);plugin&&(result=result||{},result[name]=plugin)})),result}static getPluginVersion(name){const plugin=getPlugin(name);return plugin&&plugin.VERSION||""}}function deprecateForMajor(major,oldName,newName,fn){return function(message,fn){let warned=!1;return function(){warned||log$1.warn(message),warned=!0;for(var _len22=arguments.length,args=new Array(_len22),_key22=0;_key22<_len22;_key22++)args[_key22]=arguments[_key22];return fn.apply(this,args)}}("".concat(oldName," is deprecated and will be removed in ").concat(major,".0; please use ").concat(newName," instead."),fn)}Plugin.getPlugin=getPlugin,Plugin.BASE_PLUGIN_NAME="plugin",Plugin.registerPlugin("plugin",Plugin),Player.prototype.usingPlugin=function(name){return!!this.activePlugins_&&!0===this.activePlugins_[name]},Player.prototype.hasPlugin=function(name){return!!pluginExists(name)};const normalizeId=id=>0===id.indexOf("#")?id.slice(1):id;function videojs(id,options,ready){let player=videojs.getPlayer(id);if(player)return options&&log$1.warn('Player "'.concat(id,'" is already initialised. Options will not be applied.')),ready&&player.ready(ready),player;const el="string"==typeof id?$("#"+normalizeId(id)):id;if(!isEl(el))throw new TypeError("The element or ID supplied is not valid. (videojs)");el.ownerDocument.defaultView&&el.ownerDocument.body.contains(el)||log$1.warn("The element supplied is not included in the DOM"),!0===(options=options||{}).restoreEl&&(options.restoreEl=(el.parentNode&&el.parentNode.hasAttribute("data-vjs-player")?el.parentNode:el).cloneNode(!0)),hooks("beforesetup").forEach((hookFunction=>{const opts=hookFunction(el,merge$2(options));isObject$1(opts)&&!Array.isArray(opts)?options=merge$2(options,opts):log$1.error("please return an object in beforesetup hooks")}));const PlayerComponent=Component$1.getComponent("Player");return player=new PlayerComponent(el,options,ready),hooks("setup").forEach((hookFunction=>hookFunction(player))),player}if(videojs.hooks_=hooks_,videojs.hooks=hooks,videojs.hook=function(type,fn){hooks(type,fn)},videojs.hookOnce=function(type,fn){hooks(type,[].concat(fn).map((original=>{const wrapper=function(){return removeHook(type,wrapper),original(...arguments)};return wrapper})))},videojs.removeHook=removeHook,!0!==window.VIDEOJS_NO_DYNAMIC_STYLE&&isReal()){let style=$(".vjs-styles-defaults");if(!style){style=createStyleElement("vjs-styles-defaults");const head=$("head");head&&head.insertBefore(style,head.firstChild),setTextContent(style,"\n      .video-js {\n        width: 300px;\n        height: 150px;\n      }\n\n      .vjs-fluid:not(.vjs-audio-only-mode) {\n        padding-top: 56.25%\n      }\n    ")}}autoSetupTimeout(1,videojs),videojs.VERSION="8.3.0",videojs.options=Player.prototype.options_,videojs.getPlayers=()=>Player.players,videojs.getPlayer=id=>{const players=Player.players;let tag;if("string"==typeof id){const nId=normalizeId(id),player=players[nId];if(player)return player;tag=$("#"+nId)}else tag=id;if(isEl(tag)){const{player:player,playerId:playerId}=tag;if(player||players[playerId])return player||players[playerId]}},videojs.getAllPlayers=()=>Object.keys(Player.players).map((k=>Player.players[k])).filter(Boolean),videojs.players=Player.players,videojs.getComponent=Component$1.getComponent,videojs.registerComponent=(name,comp)=>{Tech.isTech(comp)&&log$1.warn("The ".concat(name," tech was registered as a component. It should instead be registered using videojs.registerTech(name, tech)")),Component$1.registerComponent.call(Component$1,name,comp)},videojs.getTech=Tech.getTech,videojs.registerTech=Tech.registerTech,videojs.use=function(type,middleware){middlewares[type]=middlewares[type]||[],middlewares[type].push(middleware)},Object.defineProperty(videojs,"middleware",{value:{},writeable:!1,enumerable:!0}),Object.defineProperty(videojs.middleware,"TERMINATOR",{value:TERMINATOR,writeable:!1,enumerable:!0}),videojs.browser=browser,videojs.obj=Obj,videojs.mergeOptions=deprecateForMajor(9,"videojs.mergeOptions","videojs.obj.merge",merge$2),videojs.defineLazyProperty=deprecateForMajor(9,"videojs.defineLazyProperty","videojs.obj.defineLazyProperty",defineLazyProperty),videojs.bind=deprecateForMajor(9,"videojs.bind","native Function.prototype.bind",bind_),videojs.registerPlugin=Plugin.registerPlugin,videojs.deregisterPlugin=Plugin.deregisterPlugin,videojs.plugin=(name,plugin)=>(log$1.warn("videojs.plugin() is deprecated; use videojs.registerPlugin() instead"),Plugin.registerPlugin(name,plugin)),videojs.getPlugins=Plugin.getPlugins,videojs.getPlugin=Plugin.getPlugin,videojs.getPluginVersion=Plugin.getPluginVersion,videojs.addLanguage=function(code,data){return code=(""+code).toLowerCase(),videojs.options.languages=merge$2(videojs.options.languages,{[code]:data}),videojs.options.languages[code]},videojs.log=log$1,videojs.createLogger=createLogger,videojs.time=Time,videojs.createTimeRange=deprecateForMajor(9,"videojs.createTimeRange","videojs.time.createTimeRanges",createTimeRanges$1),videojs.createTimeRanges=deprecateForMajor(9,"videojs.createTimeRanges","videojs.time.createTimeRanges",createTimeRanges$1),videojs.formatTime=deprecateForMajor(9,"videojs.formatTime","videojs.time.formatTime",formatTime),videojs.setFormatTime=deprecateForMajor(9,"videojs.setFormatTime","videojs.time.setFormatTime",setFormatTime),videojs.resetFormatTime=deprecateForMajor(9,"videojs.resetFormatTime","videojs.time.resetFormatTime",resetFormatTime),videojs.parseUrl=deprecateForMajor(9,"videojs.parseUrl","videojs.url.parseUrl",parseUrl),videojs.isCrossOrigin=deprecateForMajor(9,"videojs.isCrossOrigin","videojs.url.isCrossOrigin",isCrossOrigin),videojs.EventTarget=EventTarget$2,videojs.any=any,videojs.on=on,videojs.one=one,videojs.off=off,videojs.trigger=trigger,videojs.xhr=lib,videojs.TextTrack=TextTrack,videojs.AudioTrack=AudioTrack,videojs.VideoTrack=VideoTrack,["isEl","isTextNode","createEl","hasClass","addClass","removeClass","toggleClass","setAttributes","getAttributes","emptyEl","appendContent","insertContent"].forEach((k=>{videojs[k]=function(){return log$1.warn("videojs.".concat(k,"() is deprecated; use videojs.dom.").concat(k,"() instead")),Dom[k].apply(null,arguments)}})),videojs.computedStyle=deprecateForMajor(9,"videojs.computedStyle","videojs.dom.computedStyle",computedStyle),videojs.dom=Dom,videojs.fn=Fn,videojs.num=Num,videojs.str=Str,videojs.url=Url,createCommonjsModule((function(module,exports){
-/*! @name videojs-contrib-quality-levels @version 3.0.0 @license Apache-2.0 */
-module.exports=function(videojs){function _interopDefaultLegacy(e){return e&&"object"==typeof e&&"default"in e?e:{default:e}}var videojs__default=_interopDefaultLegacy(videojs);class QualityLevel{constructor(representation){let level=this;return level.id=representation.id,level.label=level.id,level.width=representation.width,level.height=representation.height,level.bitrate=representation.bandwidth,level.frameRate=representation.frameRate,level.enabled_=representation.enabled,Object.defineProperty(level,"enabled",{get:()=>level.enabled_(),set(enable){level.enabled_(enable)}}),level}}class QualityLevelList extends videojs__default.default.EventTarget{constructor(){super();let list=this;return list.levels_=[],list.selectedIndex_=-1,Object.defineProperty(list,"selectedIndex",{get:()=>list.selectedIndex_}),Object.defineProperty(list,"length",{get:()=>list.levels_.length}),list}addQualityLevel(representation){let qualityLevel=this.getQualityLevelById(representation.id);if(qualityLevel)return qualityLevel;const index=this.levels_.length;return qualityLevel=new QualityLevel(representation),""+index in this||Object.defineProperty(this,index,{get(){return this.levels_[index]}}),this.levels_.push(qualityLevel),this.trigger({qualityLevel:qualityLevel,type:"addqualitylevel"}),qualityLevel}removeQualityLevel(qualityLevel){let removed=null;for(let i=0,l=this.length;i<l;i++)if(this[i]===qualityLevel){removed=this.levels_.splice(i,1)[0],this.selectedIndex_===i?this.selectedIndex_=-1:this.selectedIndex_>i&&this.selectedIndex_--;break}return removed&&this.trigger({qualityLevel:qualityLevel,type:"removequalitylevel"}),removed}getQualityLevelById(id){for(let i=0,l=this.length;i<l;i++){const level=this[i];if(level.id===id)return level}return null}dispose(){this.selectedIndex_=-1,this.levels_.length=0}}QualityLevelList.prototype.allowedEvents_={change:"change",addqualitylevel:"addqualitylevel",removequalitylevel:"removequalitylevel"};for(const event in QualityLevelList.prototype.allowedEvents_)QualityLevelList.prototype["on"+event]=null;var version="3.0.0";const registerPlugin=videojs__default.default.registerPlugin||videojs__default.default.plugin,initPlugin=function(player,options){const originalPluginFn=player.qualityLevels,qualityLevelList=new QualityLevelList,disposeHandler=function(){qualityLevelList.dispose(),player.qualityLevels=originalPluginFn,player.off("dispose",disposeHandler)};return player.on("dispose",disposeHandler),player.qualityLevels=()=>qualityLevelList,player.qualityLevels.VERSION=version,qualityLevelList},qualityLevels=function(options){return initPlugin(this,videojs__default.default.mergeOptions({},options))};return registerPlugin("qualityLevels",qualityLevels),qualityLevels.VERSION=version,qualityLevels}(videojs)}));var urlToolkit=createCommonjsModule((function(module,exports){var URL_REGEX,FIRST_SEGMENT_REGEX,SLASH_DOT_REGEX,SLASH_DOT_DOT_REGEX,URLToolkit;URL_REGEX=/^(?=((?:[a-zA-Z0-9+\-.]+:)?))\1(?=((?:\/\/[^\/?#]*)?))\2(?=((?:(?:[^?#\/]*\/)*[^;?#\/]*)?))\3((?:;[^?#]*)?)(\?[^#]*)?(#[^]*)?$/,FIRST_SEGMENT_REGEX=/^(?=([^\/?#]*))\1([^]*)$/,SLASH_DOT_REGEX=/(?:\/|^)\.(?=\/)/g,SLASH_DOT_DOT_REGEX=/(?:\/|^)\.\.\/(?!\.\.\/)[^\/]*(?=\/)/g,URLToolkit={buildAbsoluteURL:function(baseURL,relativeURL,opts){if(opts=opts||{},baseURL=baseURL.trim(),!(relativeURL=relativeURL.trim())){if(!opts.alwaysNormalize)return baseURL;var basePartsForNormalise=URLToolkit.parseURL(baseURL);if(!basePartsForNormalise)throw new Error("Error trying to parse base URL.");return basePartsForNormalise.path=URLToolkit.normalizePath(basePartsForNormalise.path),URLToolkit.buildURLFromParts(basePartsForNormalise)}var relativeParts=URLToolkit.parseURL(relativeURL);if(!relativeParts)throw new Error("Error trying to parse relative URL.");if(relativeParts.scheme)return opts.alwaysNormalize?(relativeParts.path=URLToolkit.normalizePath(relativeParts.path),URLToolkit.buildURLFromParts(relativeParts)):relativeURL;var baseParts=URLToolkit.parseURL(baseURL);if(!baseParts)throw new Error("Error trying to parse base URL.");if(!baseParts.netLoc&&baseParts.path&&"/"!==baseParts.path[0]){var pathParts=FIRST_SEGMENT_REGEX.exec(baseParts.path);baseParts.netLoc=pathParts[1],baseParts.path=pathParts[2]}baseParts.netLoc&&!baseParts.path&&(baseParts.path="/");var builtParts={scheme:baseParts.scheme,netLoc:relativeParts.netLoc,path:null,params:relativeParts.params,query:relativeParts.query,fragment:relativeParts.fragment};if(!relativeParts.netLoc&&(builtParts.netLoc=baseParts.netLoc,"/"!==relativeParts.path[0]))if(relativeParts.path){var baseURLPath=baseParts.path,newPath=baseURLPath.substring(0,baseURLPath.lastIndexOf("/")+1)+relativeParts.path;builtParts.path=URLToolkit.normalizePath(newPath)}else builtParts.path=baseParts.path,relativeParts.params||(builtParts.params=baseParts.params,relativeParts.query||(builtParts.query=baseParts.query));return null===builtParts.path&&(builtParts.path=opts.alwaysNormalize?URLToolkit.normalizePath(relativeParts.path):relativeParts.path),URLToolkit.buildURLFromParts(builtParts)},parseURL:function(url){var parts=URL_REGEX.exec(url);return parts?{scheme:parts[1]||"",netLoc:parts[2]||"",path:parts[3]||"",params:parts[4]||"",query:parts[5]||"",fragment:parts[6]||""}:null},normalizePath:function(path){for(path=path.split("").reverse().join("").replace(SLASH_DOT_REGEX,"");path.length!==(path=path.replace(SLASH_DOT_DOT_REGEX,"")).length;);return path.split("").reverse().join("")},buildURLFromParts:function(parts){return parts.scheme+parts.netLoc+parts.path+parts.params+parts.query+parts.fragment}},module.exports=URLToolkit})),Stream=function(){function Stream(){this.listeners={}}var _proto=Stream.prototype;return _proto.on=function(type,listener){this.listeners[type]||(this.listeners[type]=[]),this.listeners[type].push(listener)},_proto.off=function(type,listener){if(!this.listeners[type])return!1;var index=this.listeners[type].indexOf(listener);return this.listeners[type]=this.listeners[type].slice(0),this.listeners[type].splice(index,1),index>-1},_proto.trigger=function(type){var callbacks=this.listeners[type];if(callbacks)if(2===arguments.length)for(var length=callbacks.length,i=0;i<length;++i)callbacks[i].call(this,arguments[1]);else for(var args=Array.prototype.slice.call(arguments,1),_length=callbacks.length,_i=0;_i<_length;++_i)callbacks[_i].apply(this,args)},_proto.dispose=function(){this.listeners={}},_proto.pipe=function(destination){this.on("data",(function(data){destination.push(data)}))},Stream}();function decodeB64ToUint8Array$1(b64Text){for(var s,decodedString=(s=b64Text,window.atob?window.atob(s):Buffer.from(s,"base64").toString("binary")),array=new Uint8Array(decodedString.length),i=0;i<decodedString.length;i++)array[i]=decodedString.charCodeAt(i);return array}
-/*! @name m3u8-parser @version 6.0.0 @license Apache-2.0 */class LineStream extends Stream{constructor(){super(),this.buffer=""}push(data){let nextNewline;for(this.buffer+=data,nextNewline=this.buffer.indexOf("\n");nextNewline>-1;nextNewline=this.buffer.indexOf("\n"))this.trigger("data",this.buffer.substring(0,nextNewline)),this.buffer=this.buffer.substring(nextNewline+1)}}const TAB=String.fromCharCode(9),parseByterange=function(byterangeString){const match=/([0-9.]*)?@?([0-9.]*)?/.exec(byterangeString||""),result={};return match[1]&&(result.length=parseInt(match[1],10)),match[2]&&(result.offset=parseInt(match[2],10)),result},parseAttributes$1=function(attributes){const result={};if(!attributes)return result;const attrs=attributes.split(new RegExp('(?:^|,)((?:[^=]*)=(?:"[^"]*"|[^,]*))'));let attr,i=attrs.length;for(;i--;)""!==attrs[i]&&(attr=/([^=]*)=(.*)/.exec(attrs[i]).slice(1),attr[0]=attr[0].replace(/^\s+|\s+$/g,""),attr[1]=attr[1].replace(/^\s+|\s+$/g,""),attr[1]=attr[1].replace(/^['"](.*)['"]$/g,"$1"),result[attr[0]]=attr[1]);return result};class ParseStream extends Stream{constructor(){super(),this.customParsers=[],this.tagMappers=[]}push(line){let match,event;if(0===(line=line.trim()).length)return;if("#"!==line[0])return void this.trigger("data",{type:"uri",uri:line});this.tagMappers.reduce(((acc,mapper)=>{const mappedLine=mapper(line);return mappedLine===line?acc:acc.concat([mappedLine])}),[line]).forEach((newLine=>{for(let i=0;i<this.customParsers.length;i++)if(this.customParsers[i].call(this,newLine))return;if(0===newLine.indexOf("#EXT"))if(newLine=newLine.replace("\r",""),match=/^#EXTM3U/.exec(newLine),match)this.trigger("data",{type:"tag",tagType:"m3u"});else{if(match=/^#EXTINF:([0-9\.]*)?,?(.*)?$/.exec(newLine),match)return event={type:"tag",tagType:"inf"},match[1]&&(event.duration=parseFloat(match[1])),match[2]&&(event.title=match[2]),void this.trigger("data",event);if(match=/^#EXT-X-TARGETDURATION:([0-9.]*)?/.exec(newLine),match)return event={type:"tag",tagType:"targetduration"},match[1]&&(event.duration=parseInt(match[1],10)),void this.trigger("data",event);if(match=/^#EXT-X-VERSION:([0-9.]*)?/.exec(newLine),match)return event={type:"tag",tagType:"version"},match[1]&&(event.version=parseInt(match[1],10)),void this.trigger("data",event);if(match=/^#EXT-X-MEDIA-SEQUENCE:(\-?[0-9.]*)?/.exec(newLine),match)return event={type:"tag",tagType:"media-sequence"},match[1]&&(event.number=parseInt(match[1],10)),void this.trigger("data",event);if(match=/^#EXT-X-DISCONTINUITY-SEQUENCE:(\-?[0-9.]*)?/.exec(newLine),match)return event={type:"tag",tagType:"discontinuity-sequence"},match[1]&&(event.number=parseInt(match[1],10)),void this.trigger("data",event);if(match=/^#EXT-X-PLAYLIST-TYPE:(.*)?$/.exec(newLine),match)return event={type:"tag",tagType:"playlist-type"},match[1]&&(event.playlistType=match[1]),void this.trigger("data",event);if(match=/^#EXT-X-BYTERANGE:(.*)?$/.exec(newLine),match)return event=_extends$1(parseByterange(match[1]),{type:"tag",tagType:"byterange"}),void this.trigger("data",event);if(match=/^#EXT-X-ALLOW-CACHE:(YES|NO)?/.exec(newLine),match)return event={type:"tag",tagType:"allow-cache"},match[1]&&(event.allowed=!/NO/.test(match[1])),void this.trigger("data",event);if(match=/^#EXT-X-MAP:(.*)$/.exec(newLine),match){if(event={type:"tag",tagType:"map"},match[1]){const attributes=parseAttributes$1(match[1]);attributes.URI&&(event.uri=attributes.URI),attributes.BYTERANGE&&(event.byterange=parseByterange(attributes.BYTERANGE))}this.trigger("data",event)}else if(match=/^#EXT-X-STREAM-INF:(.*)$/.exec(newLine),match){if(event={type:"tag",tagType:"stream-inf"},match[1]){if(event.attributes=parseAttributes$1(match[1]),event.attributes.RESOLUTION){const split=event.attributes.RESOLUTION.split("x"),resolution={};split[0]&&(resolution.width=parseInt(split[0],10)),split[1]&&(resolution.height=parseInt(split[1],10)),event.attributes.RESOLUTION=resolution}event.attributes.BANDWIDTH&&(event.attributes.BANDWIDTH=parseInt(event.attributes.BANDWIDTH,10)),event.attributes["FRAME-RATE"]&&(event.attributes["FRAME-RATE"]=parseFloat(event.attributes["FRAME-RATE"])),event.attributes["PROGRAM-ID"]&&(event.attributes["PROGRAM-ID"]=parseInt(event.attributes["PROGRAM-ID"],10))}this.trigger("data",event)}else{if(match=/^#EXT-X-MEDIA:(.*)$/.exec(newLine),match)return event={type:"tag",tagType:"media"},match[1]&&(event.attributes=parseAttributes$1(match[1])),void this.trigger("data",event);if(match=/^#EXT-X-ENDLIST/.exec(newLine),match)this.trigger("data",{type:"tag",tagType:"endlist"});else if(match=/^#EXT-X-DISCONTINUITY/.exec(newLine),match)this.trigger("data",{type:"tag",tagType:"discontinuity"});else{if(match=/^#EXT-X-PROGRAM-DATE-TIME:(.*)$/.exec(newLine),match)return event={type:"tag",tagType:"program-date-time"},match[1]&&(event.dateTimeString=match[1],event.dateTimeObject=new Date(match[1])),void this.trigger("data",event);if(match=/^#EXT-X-KEY:(.*)$/.exec(newLine),match)return event={type:"tag",tagType:"key"},match[1]&&(event.attributes=parseAttributes$1(match[1]),event.attributes.IV&&("0x"===event.attributes.IV.substring(0,2).toLowerCase()&&(event.attributes.IV=event.attributes.IV.substring(2)),event.attributes.IV=event.attributes.IV.match(/.{8}/g),event.attributes.IV[0]=parseInt(event.attributes.IV[0],16),event.attributes.IV[1]=parseInt(event.attributes.IV[1],16),event.attributes.IV[2]=parseInt(event.attributes.IV[2],16),event.attributes.IV[3]=parseInt(event.attributes.IV[3],16),event.attributes.IV=new Uint32Array(event.attributes.IV))),void this.trigger("data",event);if(match=/^#EXT-X-START:(.*)$/.exec(newLine),match)return event={type:"tag",tagType:"start"},match[1]&&(event.attributes=parseAttributes$1(match[1]),event.attributes["TIME-OFFSET"]=parseFloat(event.attributes["TIME-OFFSET"]),event.attributes.PRECISE=/YES/.test(event.attributes.PRECISE)),void this.trigger("data",event);if(match=/^#EXT-X-CUE-OUT-CONT:(.*)?$/.exec(newLine),match)return event={type:"tag",tagType:"cue-out-cont"},match[1]?event.data=match[1]:event.data="",void this.trigger("data",event);if(match=/^#EXT-X-CUE-OUT:(.*)?$/.exec(newLine),match)return event={type:"tag",tagType:"cue-out"},match[1]?event.data=match[1]:event.data="",void this.trigger("data",event);if(match=/^#EXT-X-CUE-IN:(.*)?$/.exec(newLine),match)return event={type:"tag",tagType:"cue-in"},match[1]?event.data=match[1]:event.data="",void this.trigger("data",event);if(match=/^#EXT-X-SKIP:(.*)$/.exec(newLine),match&&match[1])return event={type:"tag",tagType:"skip"},event.attributes=parseAttributes$1(match[1]),event.attributes.hasOwnProperty("SKIPPED-SEGMENTS")&&(event.attributes["SKIPPED-SEGMENTS"]=parseInt(event.attributes["SKIPPED-SEGMENTS"],10)),event.attributes.hasOwnProperty("RECENTLY-REMOVED-DATERANGES")&&(event.attributes["RECENTLY-REMOVED-DATERANGES"]=event.attributes["RECENTLY-REMOVED-DATERANGES"].split(TAB)),void this.trigger("data",event);if(match=/^#EXT-X-PART:(.*)$/.exec(newLine),match&&match[1])return event={type:"tag",tagType:"part"},event.attributes=parseAttributes$1(match[1]),["DURATION"].forEach((function(key){event.attributes.hasOwnProperty(key)&&(event.attributes[key]=parseFloat(event.attributes[key]))})),["INDEPENDENT","GAP"].forEach((function(key){event.attributes.hasOwnProperty(key)&&(event.attributes[key]=/YES/.test(event.attributes[key]))})),event.attributes.hasOwnProperty("BYTERANGE")&&(event.attributes.byterange=parseByterange(event.attributes.BYTERANGE)),void this.trigger("data",event);if(match=/^#EXT-X-SERVER-CONTROL:(.*)$/.exec(newLine),match&&match[1])return event={type:"tag",tagType:"server-control"},event.attributes=parseAttributes$1(match[1]),["CAN-SKIP-UNTIL","PART-HOLD-BACK","HOLD-BACK"].forEach((function(key){event.attributes.hasOwnProperty(key)&&(event.attributes[key]=parseFloat(event.attributes[key]))})),["CAN-SKIP-DATERANGES","CAN-BLOCK-RELOAD"].forEach((function(key){event.attributes.hasOwnProperty(key)&&(event.attributes[key]=/YES/.test(event.attributes[key]))})),void this.trigger("data",event);if(match=/^#EXT-X-PART-INF:(.*)$/.exec(newLine),match&&match[1])return event={type:"tag",tagType:"part-inf"},event.attributes=parseAttributes$1(match[1]),["PART-TARGET"].forEach((function(key){event.attributes.hasOwnProperty(key)&&(event.attributes[key]=parseFloat(event.attributes[key]))})),void this.trigger("data",event);if(match=/^#EXT-X-PRELOAD-HINT:(.*)$/.exec(newLine),match&&match[1])return event={type:"tag",tagType:"preload-hint"},event.attributes=parseAttributes$1(match[1]),["BYTERANGE-START","BYTERANGE-LENGTH"].forEach((function(key){if(event.attributes.hasOwnProperty(key)){event.attributes[key]=parseInt(event.attributes[key],10);const subkey="BYTERANGE-LENGTH"===key?"length":"offset";event.attributes.byterange=event.attributes.byterange||{},event.attributes.byterange[subkey]=event.attributes[key],delete event.attributes[key]}})),void this.trigger("data",event);if(match=/^#EXT-X-RENDITION-REPORT:(.*)$/.exec(newLine),match&&match[1])return event={type:"tag",tagType:"rendition-report"},event.attributes=parseAttributes$1(match[1]),["LAST-MSN","LAST-PART"].forEach((function(key){event.attributes.hasOwnProperty(key)&&(event.attributes[key]=parseInt(event.attributes[key],10))})),void this.trigger("data",event);this.trigger("data",{type:"tag",data:newLine.slice(4)})}}}else this.trigger("data",{type:"comment",text:newLine.slice(1)})}))}addParser(_ref8){let{expression:expression,customType:customType,dataParser:dataParser,segment:segment}=_ref8;"function"!=typeof dataParser&&(dataParser=line=>line),this.customParsers.push((line=>{if(expression.exec(line))return this.trigger("data",{type:"custom",data:dataParser(line),customType:customType,segment:segment}),!0}))}addTagMapper(_ref9){let{expression:expression,map:map}=_ref9;this.tagMappers.push((line=>expression.test(line)?map(line):line))}}const camelCaseKeys=function(attributes){const result={};return Object.keys(attributes).forEach((function(key){var str;result[(str=key,str.toLowerCase().replace(/-(\w)/g,(a=>a[1].toUpperCase())))]=attributes[key]})),result},setHoldBack=function(manifest){const{serverControl:serverControl,targetDuration:targetDuration,partTargetDuration:partTargetDuration}=manifest;if(!serverControl)return;const tag="#EXT-X-SERVER-CONTROL",hb="holdBack",phb="partHoldBack",minTargetDuration=targetDuration&&3*targetDuration,minPartDuration=partTargetDuration&&2*partTargetDuration;targetDuration&&!serverControl.hasOwnProperty(hb)&&(serverControl[hb]=minTargetDuration,this.trigger("info",{message:"".concat(tag," defaulting HOLD-BACK to targetDuration * 3 (").concat(minTargetDuration,").")})),minTargetDuration&&serverControl[hb]<minTargetDuration&&(this.trigger("warn",{message:"".concat(tag," clamping HOLD-BACK (").concat(serverControl[hb],") to targetDuration * 3 (").concat(minTargetDuration,")")}),serverControl[hb]=minTargetDuration),partTargetDuration&&!serverControl.hasOwnProperty(phb)&&(serverControl[phb]=3*partTargetDuration,this.trigger("info",{message:"".concat(tag," defaulting PART-HOLD-BACK to partTargetDuration * 3 (").concat(serverControl[phb],").")})),partTargetDuration&&serverControl[phb]<minPartDuration&&(this.trigger("warn",{message:"".concat(tag," clamping PART-HOLD-BACK (").concat(serverControl[phb],") to partTargetDuration * 2 (").concat(minPartDuration,").")}),serverControl[phb]=minPartDuration)};class Parser extends Stream{constructor(){super(),this.lineStream=new LineStream,this.parseStream=new ParseStream,this.lineStream.pipe(this.parseStream);const self=this,uris=[];let currentMap,key,currentUri={},hasParts=!1;const noop=function(){},defaultMediaGroups={AUDIO:{},VIDEO:{},"CLOSED-CAPTIONS":{},SUBTITLES:{}};let currentTimeline=0;this.manifest={allowCache:!0,discontinuityStarts:[],segments:[]};let lastByterangeEnd=0,lastPartByterangeEnd=0;this.on("end",(()=>{currentUri.uri||!currentUri.parts&&!currentUri.preloadHints||(!currentUri.map&&currentMap&&(currentUri.map=currentMap),!currentUri.key&&key&&(currentUri.key=key),currentUri.timeline||"number"!=typeof currentTimeline||(currentUri.timeline=currentTimeline),this.manifest.preloadSegment=currentUri)})),this.parseStream.on("data",(function(entry){let mediaGroup,rendition;({tag(){({version(){entry.version&&(this.manifest.version=entry.version)},"allow-cache"(){this.manifest.allowCache=entry.allowed,"allowed"in entry||(this.trigger("info",{message:"defaulting allowCache to YES"}),this.manifest.allowCache=!0)},byterange(){const byterange={};"length"in entry&&(currentUri.byterange=byterange,byterange.length=entry.length,"offset"in entry||(entry.offset=lastByterangeEnd)),"offset"in entry&&(currentUri.byterange=byterange,byterange.offset=entry.offset),lastByterangeEnd=byterange.offset+byterange.length},endlist(){this.manifest.endList=!0},inf(){"mediaSequence"in this.manifest||(this.manifest.mediaSequence=0,this.trigger("info",{message:"defaulting media sequence to zero"})),"discontinuitySequence"in this.manifest||(this.manifest.discontinuitySequence=0,this.trigger("info",{message:"defaulting discontinuity sequence to zero"})),entry.duration>0&&(currentUri.duration=entry.duration),0===entry.duration&&(currentUri.duration=.01,this.trigger("info",{message:"updating zero segment duration to a small value"})),this.manifest.segments=uris},key(){if(entry.attributes)if("NONE"!==entry.attributes.METHOD)if(entry.attributes.URI){if("com.apple.streamingkeydelivery"===entry.attributes.KEYFORMAT)return this.manifest.contentProtection=this.manifest.contentProtection||{},void(this.manifest.contentProtection["com.apple.fps.1_0"]={attributes:entry.attributes});if("com.microsoft.playready"===entry.attributes.KEYFORMAT)return this.manifest.contentProtection=this.manifest.contentProtection||{},void(this.manifest.contentProtection["com.microsoft.playready"]={uri:entry.attributes.URI});if("urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"===entry.attributes.KEYFORMAT){return-1===["SAMPLE-AES","SAMPLE-AES-CTR","SAMPLE-AES-CENC"].indexOf(entry.attributes.METHOD)?void this.trigger("warn",{message:"invalid key method provided for Widevine"}):("SAMPLE-AES-CENC"===entry.attributes.METHOD&&this.trigger("warn",{message:"SAMPLE-AES-CENC is deprecated, please use SAMPLE-AES-CTR instead"}),"data:text/plain;base64,"!==entry.attributes.URI.substring(0,23)?void this.trigger("warn",{message:"invalid key URI provided for Widevine"}):entry.attributes.KEYID&&"0x"===entry.attributes.KEYID.substring(0,2)?(this.manifest.contentProtection=this.manifest.contentProtection||{},void(this.manifest.contentProtection["com.widevine.alpha"]={attributes:{schemeIdUri:entry.attributes.KEYFORMAT,keyId:entry.attributes.KEYID.substring(2)},pssh:decodeB64ToUint8Array$1(entry.attributes.URI.split(",")[1])})):void this.trigger("warn",{message:"invalid key ID provided for Widevine"}))}entry.attributes.METHOD||this.trigger("warn",{message:"defaulting key method to AES-128"}),key={method:entry.attributes.METHOD||"AES-128",uri:entry.attributes.URI},void 0!==entry.attributes.IV&&(key.iv=entry.attributes.IV)}else this.trigger("warn",{message:"ignoring key declaration without URI"});else key=null;else this.trigger("warn",{message:"ignoring key declaration without attribute list"})},"media-sequence"(){isFinite(entry.number)?this.manifest.mediaSequence=entry.number:this.trigger("warn",{message:"ignoring invalid media sequence: "+entry.number})},"discontinuity-sequence"(){isFinite(entry.number)?(this.manifest.discontinuitySequence=entry.number,currentTimeline=entry.number):this.trigger("warn",{message:"ignoring invalid discontinuity sequence: "+entry.number})},"playlist-type"(){/VOD|EVENT/.test(entry.playlistType)?this.manifest.playlistType=entry.playlistType:this.trigger("warn",{message:"ignoring unknown playlist type: "+entry.playlist})},map(){currentMap={},entry.uri&&(currentMap.uri=entry.uri),entry.byterange&&(currentMap.byterange=entry.byterange),key&&(currentMap.key=key)},"stream-inf"(){this.manifest.playlists=uris,this.manifest.mediaGroups=this.manifest.mediaGroups||defaultMediaGroups,entry.attributes?(currentUri.attributes||(currentUri.attributes={}),_extends$1(currentUri.attributes,entry.attributes)):this.trigger("warn",{message:"ignoring empty stream-inf attributes"})},media(){if(this.manifest.mediaGroups=this.manifest.mediaGroups||defaultMediaGroups,!(entry.attributes&&entry.attributes.TYPE&&entry.attributes["GROUP-ID"]&&entry.attributes.NAME))return void this.trigger("warn",{message:"ignoring incomplete or missing media group"});const mediaGroupType=this.manifest.mediaGroups[entry.attributes.TYPE];mediaGroupType[entry.attributes["GROUP-ID"]]=mediaGroupType[entry.attributes["GROUP-ID"]]||{},mediaGroup=mediaGroupType[entry.attributes["GROUP-ID"]],rendition={default:/yes/i.test(entry.attributes.DEFAULT)},rendition.default?rendition.autoselect=!0:rendition.autoselect=/yes/i.test(entry.attributes.AUTOSELECT),entry.attributes.LANGUAGE&&(rendition.language=entry.attributes.LANGUAGE),entry.attributes.URI&&(rendition.uri=entry.attributes.URI),entry.attributes["INSTREAM-ID"]&&(rendition.instreamId=entry.attributes["INSTREAM-ID"]),entry.attributes.CHARACTERISTICS&&(rendition.characteristics=entry.attributes.CHARACTERISTICS),entry.attributes.FORCED&&(rendition.forced=/yes/i.test(entry.attributes.FORCED)),mediaGroup[entry.attributes.NAME]=rendition},discontinuity(){currentTimeline+=1,currentUri.discontinuity=!0,this.manifest.discontinuityStarts.push(uris.length)},"program-date-time"(){void 0===this.manifest.dateTimeString&&(this.manifest.dateTimeString=entry.dateTimeString,this.manifest.dateTimeObject=entry.dateTimeObject),currentUri.dateTimeString=entry.dateTimeString,currentUri.dateTimeObject=entry.dateTimeObject},targetduration(){!isFinite(entry.duration)||entry.duration<0?this.trigger("warn",{message:"ignoring invalid target duration: "+entry.duration}):(this.manifest.targetDuration=entry.duration,setHoldBack.call(this,this.manifest))},start(){entry.attributes&&!isNaN(entry.attributes["TIME-OFFSET"])?this.manifest.start={timeOffset:entry.attributes["TIME-OFFSET"],precise:entry.attributes.PRECISE}:this.trigger("warn",{message:"ignoring start declaration without appropriate attribute list"})},"cue-out"(){currentUri.cueOut=entry.data},"cue-out-cont"(){currentUri.cueOutCont=entry.data},"cue-in"(){currentUri.cueIn=entry.data},skip(){this.manifest.skip=camelCaseKeys(entry.attributes),this.warnOnMissingAttributes_("#EXT-X-SKIP",entry.attributes,["SKIPPED-SEGMENTS"])},part(){hasParts=!0;const segmentIndex=this.manifest.segments.length,part=camelCaseKeys(entry.attributes);currentUri.parts=currentUri.parts||[],currentUri.parts.push(part),part.byterange&&(part.byterange.hasOwnProperty("offset")||(part.byterange.offset=lastPartByterangeEnd),lastPartByterangeEnd=part.byterange.offset+part.byterange.length);const partIndex=currentUri.parts.length-1;this.warnOnMissingAttributes_("#EXT-X-PART #".concat(partIndex," for segment #").concat(segmentIndex),entry.attributes,["URI","DURATION"]),this.manifest.renditionReports&&this.manifest.renditionReports.forEach(((r,i)=>{r.hasOwnProperty("lastPart")||this.trigger("warn",{message:"#EXT-X-RENDITION-REPORT #".concat(i," lacks required attribute(s): LAST-PART")})}))},"server-control"(){const attrs=this.manifest.serverControl=camelCaseKeys(entry.attributes);attrs.hasOwnProperty("canBlockReload")||(attrs.canBlockReload=!1,this.trigger("info",{message:"#EXT-X-SERVER-CONTROL defaulting CAN-BLOCK-RELOAD to false"})),setHoldBack.call(this,this.manifest),attrs.canSkipDateranges&&!attrs.hasOwnProperty("canSkipUntil")&&this.trigger("warn",{message:"#EXT-X-SERVER-CONTROL lacks required attribute CAN-SKIP-UNTIL which is required when CAN-SKIP-DATERANGES is set"})},"preload-hint"(){const segmentIndex=this.manifest.segments.length,hint=camelCaseKeys(entry.attributes),isPart=hint.type&&"PART"===hint.type;currentUri.preloadHints=currentUri.preloadHints||[],currentUri.preloadHints.push(hint),hint.byterange&&(hint.byterange.hasOwnProperty("offset")||(hint.byterange.offset=isPart?lastPartByterangeEnd:0,isPart&&(lastPartByterangeEnd=hint.byterange.offset+hint.byterange.length)));const index=currentUri.preloadHints.length-1;if(this.warnOnMissingAttributes_("#EXT-X-PRELOAD-HINT #".concat(index," for segment #").concat(segmentIndex),entry.attributes,["TYPE","URI"]),hint.type)for(let i=0;i<currentUri.preloadHints.length-1;i++){const otherHint=currentUri.preloadHints[i];otherHint.type&&(otherHint.type===hint.type&&this.trigger("warn",{message:"#EXT-X-PRELOAD-HINT #".concat(index," for segment #").concat(segmentIndex," has the same TYPE ").concat(hint.type," as preload hint #").concat(i)}))}},"rendition-report"(){const report=camelCaseKeys(entry.attributes);this.manifest.renditionReports=this.manifest.renditionReports||[],this.manifest.renditionReports.push(report);const index=this.manifest.renditionReports.length-1,required=["LAST-MSN","URI"];hasParts&&required.push("LAST-PART"),this.warnOnMissingAttributes_("#EXT-X-RENDITION-REPORT #".concat(index),entry.attributes,required)},"part-inf"(){this.manifest.partInf=camelCaseKeys(entry.attributes),this.warnOnMissingAttributes_("#EXT-X-PART-INF",entry.attributes,["PART-TARGET"]),this.manifest.partInf.partTarget&&(this.manifest.partTargetDuration=this.manifest.partInf.partTarget),setHoldBack.call(this,this.manifest)}}[entry.tagType]||noop).call(self)},uri(){currentUri.uri=entry.uri,uris.push(currentUri),this.manifest.targetDuration&&!("duration"in currentUri)&&(this.trigger("warn",{message:"defaulting segment duration to the target duration"}),currentUri.duration=this.manifest.targetDuration),key&&(currentUri.key=key),currentUri.timeline=currentTimeline,currentMap&&(currentUri.map=currentMap),lastPartByterangeEnd=0,currentUri={}},comment(){},custom(){entry.segment?(currentUri.custom=currentUri.custom||{},currentUri.custom[entry.customType]=entry.data):(this.manifest.custom=this.manifest.custom||{},this.manifest.custom[entry.customType]=entry.data)}})[entry.type].call(self)}))}warnOnMissingAttributes_(identifier,attributes,required){const missing=[];required.forEach((function(key){attributes.hasOwnProperty(key)||missing.push(key)})),missing.length&&this.trigger("warn",{message:"".concat(identifier," lacks required attribute(s): ").concat(missing.join(", "))})}push(chunk){this.lineStream.push(chunk)}end(){this.lineStream.push("\n"),this.trigger("end")}addParser(options){this.parseStream.addParser(options)}addTagMapper(options){this.parseStream.addTagMapper(options)}}var a,b,regexs={mp4:/^(av0?1|avc0?[1234]|vp0?9|flac|opus|mp3|mp4a|mp4v|stpp.ttml.im1t)/,webm:/^(vp0?[89]|av0?1|opus|vorbis)/,ogg:/^(vp0?[89]|theora|flac|opus|vorbis)/,video:/^(av0?1|avc0?[1234]|vp0?[89]|hvc1|hev1|theora|mp4v)/,audio:/^(mp4a|flac|vorbis|opus|ac-[34]|ec-3|alac|mp3|speex|aac)/,text:/^(stpp.ttml.im1t)/,muxerVideo:/^(avc0?1)/,muxerAudio:/^(mp4a)/,muxerText:/a^/},mediaTypes=["video","audio","text"],upperMediaTypes=["Video","Audio","Text"],translateLegacyCodec=function(codec){return codec?codec.replace(/avc1\.(\d+)\.(\d+)/i,(function(orig,profile,avcLevel){return"avc1."+("00"+Number(profile).toString(16)).slice(-2)+"00"+("00"+Number(avcLevel).toString(16)).slice(-2)})):codec},parseCodecs=function(codecString){void 0===codecString&&(codecString="");var codecs=codecString.split(","),result=[];return codecs.forEach((function(codec){var codecType;codec=codec.trim(),mediaTypes.forEach((function(name){var match=regexs[name].exec(codec.toLowerCase());if(match&&!(match.length<=1)){codecType=name;var type=codec.substring(0,match[1].length),details=codec.replace(type,"");result.push({type:type,details:details,mediaType:name})}})),codecType||result.push({type:codec,details:"",mediaType:"unknown"})})),result},isAudioCodec=function(codec){return void 0===codec&&(codec=""),regexs.audio.test(codec.trim().toLowerCase())},getMimeForCodec=function(codecString){if(codecString&&"string"==typeof codecString){var codec,codecs=codecString.toLowerCase().split(",").map((function(c){return translateLegacyCodec(c.trim())})),type="video";1===codecs.length&&isAudioCodec(codecs[0])?type="audio":1===codecs.length&&(void 0===(codec=codecs[0])&&(codec=""),regexs.text.test(codec.trim().toLowerCase()))&&(type="application");var container="mp4";return codecs.every((function(c){return regexs.mp4.test(c)}))?container="mp4":codecs.every((function(c){return regexs.webm.test(c)}))?container="webm":codecs.every((function(c){return regexs.ogg.test(c)}))&&(container="ogg"),type+"/"+container+';codecs="'+codecString+'"'}},browserSupportsCodec=function(codecString){return void 0===codecString&&(codecString=""),window.MediaSource&&window.MediaSource.isTypeSupported&&window.MediaSource.isTypeSupported(getMimeForCodec(codecString))||!1},muxerSupportsCodec=function(codecString){return void 0===codecString&&(codecString=""),codecString.toLowerCase().split(",").every((function(codec){codec=codec.trim();for(var i=0;i<upperMediaTypes.length;i++){if(regexs["muxer"+upperMediaTypes[i]].test(codec))return!0}return!1}))},MPEGURL_REGEX=/^(audio|video|application)\/(x-|vnd\.apple\.)?mpegurl/i,DASH_REGEX=/^application\/dash\+xml/i,simpleTypeFromSourceType=function(type){return MPEGURL_REGEX.test(type)?"hls":DASH_REGEX.test(type)?"dash":"application/vnd.videojs.vhs+json"===type?"vhs-json":null},isArrayBufferView=function(obj){return"function"===ArrayBuffer.isView?ArrayBuffer.isView(obj):obj&&obj.buffer instanceof ArrayBuffer},toUint8=function(bytes){return bytes instanceof Uint8Array?bytes:(Array.isArray(bytes)||isArrayBufferView(bytes)||bytes instanceof ArrayBuffer||(bytes="number"!=typeof bytes||"number"==typeof bytes&&bytes!=bytes?0:[bytes]),new Uint8Array(bytes&&bytes.buffer||bytes,bytes&&bytes.byteOffset||0,bytes&&bytes.byteLength||0))},BigInt=window.BigInt||Number,BYTE_TABLE=[BigInt("0x1"),BigInt("0x100"),BigInt("0x10000"),BigInt("0x1000000"),BigInt("0x100000000"),BigInt("0x10000000000"),BigInt("0x1000000000000"),BigInt("0x100000000000000"),BigInt("0x10000000000000000")];a=new Uint16Array([65484]),255===(b=new Uint8Array(a.buffer,a.byteOffset,a.byteLength))[0]||b[0];var bytesToNumber=function(bytes,_temp){var _ref=void 0===_temp?{}:_temp,_ref$signed=_ref.signed,signed=void 0!==_ref$signed&&_ref$signed,_ref$le=_ref.le,le=void 0!==_ref$le&&_ref$le;bytes=toUint8(bytes);var fn=le?"reduce":"reduceRight",number=(bytes[fn]?bytes[fn]:Array.prototype[fn]).call(bytes,(function(total,byte,i){var exponent=le?i:Math.abs(i+1-bytes.length);return total+BigInt(byte)*BYTE_TABLE[exponent]}),BigInt(0));if(signed){var max=BYTE_TABLE[bytes.length]/BigInt(2)-BigInt(1);(number=BigInt(number))>max&&(number-=max,number-=max,number-=BigInt(2))}return Number(number)},numberToBytes=function(number,_temp2){var _ref2$le=(void 0===_temp2?{}:_temp2).le,le=void 0!==_ref2$le&&_ref2$le;("bigint"!=typeof number&&"number"!=typeof number||"number"==typeof number&&number!=number)&&(number=0);for(var byteCount=function(x){return Math.ceil(function(x){return x.toString(2).length}(x)/8)}(number=BigInt(number)),bytes=new Uint8Array(new ArrayBuffer(byteCount)),i=0;i<byteCount;i++){var byteIndex=le?i:Math.abs(i+1-bytes.length);bytes[byteIndex]=Number(number/BYTE_TABLE[i]&BigInt(255)),number<0&&(bytes[byteIndex]=Math.abs(~bytes[byteIndex]),bytes[byteIndex]-=0===i?1:2)}return bytes},stringToBytes=function(string,stringIsBytes){if("string"!=typeof string&&string&&"function"==typeof string.toString&&(string=string.toString()),"string"!=typeof string)return new Uint8Array;stringIsBytes||(string=unescape(encodeURIComponent(string)));for(var view=new Uint8Array(string.length),i=0;i<string.length;i++)view[i]=string.charCodeAt(i);return view},bytesMatch=function(a,b,_temp3){var _ref3=void 0===_temp3?{}:_temp3,_ref3$offset=_ref3.offset,offset=void 0===_ref3$offset?0:_ref3$offset,_ref3$mask=_ref3.mask,mask=void 0===_ref3$mask?[]:_ref3$mask;a=toUint8(a);var fn=(b=toUint8(b)).every?b.every:Array.prototype.every;return b.length&&a.length-offset>=b.length&&fn.call(b,(function(bByte,i){return bByte===(mask[i]?mask[i]&a[offset+i]:a[offset+i])}))},resolveUrl$1=function(baseUrl,relativeUrl){if(/^[a-z]+:/i.test(relativeUrl))return relativeUrl;/^data:/.test(baseUrl)&&(baseUrl=window.location&&window.location.href||"");var nativeURL="function"==typeof window.URL,protocolLess=/^\/\//.test(baseUrl),removeLocation=!window.location&&!/\/\//i.test(baseUrl);if(nativeURL?baseUrl=new window.URL(baseUrl,window.location||"http://example.com"):/\/\//i.test(baseUrl)||(baseUrl=urlToolkit.buildAbsoluteURL(window.location&&window.location.href||"",baseUrl)),nativeURL){var newUrl=new URL(relativeUrl,baseUrl);return removeLocation?newUrl.href.slice("http://example.com".length):protocolLess?newUrl.href.slice(newUrl.protocol.length):newUrl.href}return urlToolkit.buildAbsoluteURL(baseUrl,relativeUrl)};function decodeB64ToUint8Array(b64Text){for(var s,decodedString=(s=b64Text,window.atob?window.atob(s):Buffer.from(s,"base64").toString("binary")),array=new Uint8Array(decodedString.length),i=0;i<decodedString.length;i++)array[i]=decodedString.charCodeAt(i);return array}function freeze(object,oc){return void 0===oc&&(oc=Object),oc&&"function"==typeof oc.freeze?oc.freeze(object):object}var MIME_TYPE=freeze({HTML:"text/html",isHTML:function(value){return value===MIME_TYPE.HTML},XML_APPLICATION:"application/xml",XML_TEXT:"text/xml",XML_XHTML_APPLICATION:"application/xhtml+xml",XML_SVG_IMAGE:"image/svg+xml"}),NAMESPACE$3=freeze({HTML:"http://www.w3.org/1999/xhtml",isHTML:function(uri){return uri===NAMESPACE$3.HTML},SVG:"http://www.w3.org/2000/svg",XML:"http://www.w3.org/XML/1998/namespace",XMLNS:"http://www.w3.org/2000/xmlns/"}),conventions={assign:function(target,source){if(null===target||"object"!=typeof target)throw new TypeError("target is not an object");for(var key in source)Object.prototype.hasOwnProperty.call(source,key)&&(target[key]=source[key]);return target},find:function(list,predicate,ac){if(void 0===ac&&(ac=Array.prototype),list&&"function"==typeof ac.find)return ac.find.call(list,predicate);for(var i=0;i<list.length;i++)if(Object.prototype.hasOwnProperty.call(list,i)){var item=list[i];if(predicate.call(void 0,item,i,list))return item}},freeze:freeze,MIME_TYPE:MIME_TYPE,NAMESPACE:NAMESPACE$3},find=conventions.find,NAMESPACE$2=conventions.NAMESPACE;function notEmptyString(input){return""!==input}function orderedSetReducer(current,element){return current.hasOwnProperty(element)||(current[element]=!0),current}function toOrderedSet(input){if(!input)return[];var list=function(input){return input?input.split(/[\t\n\f\r ]+/).filter(notEmptyString):[]}(input);return Object.keys(list.reduce(orderedSetReducer,{}))}function copy(src,dest){for(var p in src)Object.prototype.hasOwnProperty.call(src,p)&&(dest[p]=src[p])}function _extends(Class,Super){var pt=Class.prototype;if(!(pt instanceof Super)){function t(){}t.prototype=Super.prototype,copy(pt,t=new t),Class.prototype=pt=t}pt.constructor!=Class&&("function"!=typeof Class&&console.error("unknown Class:"+Class),pt.constructor=Class)}var NodeType={},ELEMENT_NODE=NodeType.ELEMENT_NODE=1,ATTRIBUTE_NODE=NodeType.ATTRIBUTE_NODE=2,TEXT_NODE=NodeType.TEXT_NODE=3,CDATA_SECTION_NODE=NodeType.CDATA_SECTION_NODE=4,ENTITY_REFERENCE_NODE=NodeType.ENTITY_REFERENCE_NODE=5,ENTITY_NODE=NodeType.ENTITY_NODE=6,PROCESSING_INSTRUCTION_NODE=NodeType.PROCESSING_INSTRUCTION_NODE=7,COMMENT_NODE=NodeType.COMMENT_NODE=8,DOCUMENT_NODE=NodeType.DOCUMENT_NODE=9,DOCUMENT_TYPE_NODE=NodeType.DOCUMENT_TYPE_NODE=10,DOCUMENT_FRAGMENT_NODE=NodeType.DOCUMENT_FRAGMENT_NODE=11,NOTATION_NODE=NodeType.NOTATION_NODE=12,ExceptionCode={},ExceptionMessage={};ExceptionCode.INDEX_SIZE_ERR=(ExceptionMessage[1]="Index size error",1),ExceptionCode.DOMSTRING_SIZE_ERR=(ExceptionMessage[2]="DOMString size error",2);var HIERARCHY_REQUEST_ERR=ExceptionCode.HIERARCHY_REQUEST_ERR=(ExceptionMessage[3]="Hierarchy request error",3);ExceptionCode.WRONG_DOCUMENT_ERR=(ExceptionMessage[4]="Wrong document",4),ExceptionCode.INVALID_CHARACTER_ERR=(ExceptionMessage[5]="Invalid character",5),ExceptionCode.NO_DATA_ALLOWED_ERR=(ExceptionMessage[6]="No data allowed",6),ExceptionCode.NO_MODIFICATION_ALLOWED_ERR=(ExceptionMessage[7]="No modification allowed",7);var NOT_FOUND_ERR=ExceptionCode.NOT_FOUND_ERR=(ExceptionMessage[8]="Not found",8);ExceptionCode.NOT_SUPPORTED_ERR=(ExceptionMessage[9]="Not supported",9);var INUSE_ATTRIBUTE_ERR=ExceptionCode.INUSE_ATTRIBUTE_ERR=(ExceptionMessage[10]="Attribute in use",10);function DOMException(code,message){if(message instanceof Error)var error=message;else error=this,Error.call(this,ExceptionMessage[code]),this.message=ExceptionMessage[code],Error.captureStackTrace&&Error.captureStackTrace(this,DOMException);return error.code=code,message&&(this.message=this.message+": "+message),error}function NodeList(){}function LiveNodeList(node,refresh){this._node=node,this._refresh=refresh,_updateLiveList(this)}function _updateLiveList(list){var inc=list._node._inc||list._node.ownerDocument._inc;if(list._inc!=inc){var ls=list._refresh(list._node);__set__(list,"length",ls.length),copy(ls,list),list._inc=inc}}function NamedNodeMap(){}function _findNodeIndex(list,node){for(var i=list.length;i--;)if(list[i]===node)return i}function _addNamedNode(el,list,newAttr,oldAttr){if(oldAttr?list[_findNodeIndex(list,oldAttr)]=newAttr:list[list.length++]=newAttr,el){newAttr.ownerElement=el;var doc=el.ownerDocument;doc&&(oldAttr&&_onRemoveAttribute(doc,el,oldAttr),function(doc,el,newAttr){doc&&doc._inc++,newAttr.namespaceURI===NAMESPACE$2.XMLNS&&(el._nsMap[newAttr.prefix?newAttr.localName:""]=newAttr.value)}(doc,el,newAttr))}}function _removeNamedNode(el,list,attr){var i=_findNodeIndex(list,attr);if(!(i>=0))throw new DOMException(NOT_FOUND_ERR,new Error(el.tagName+"@"+attr));for(var lastIndex=list.length-1;i<lastIndex;)list[i]=list[++i];if(list.length=lastIndex,el){var doc=el.ownerDocument;doc&&(_onRemoveAttribute(doc,el,attr),attr.ownerElement=null)}}function DOMImplementation$1(){}function Node(){}function _xmlEncoder(c){return("<"==c?"&lt;":">"==c&&"&gt;")||"&"==c&&"&amp;"||'"'==c&&"&quot;"||"&#"+c.charCodeAt()+";"}function _visitNode(node,callback){if(callback(node))return!0;if(node=node.firstChild)do{if(_visitNode(node,callback))return!0}while(node=node.nextSibling)}function Document(){this.ownerDocument=this}function _onRemoveAttribute(doc,el,newAttr,remove){doc&&doc._inc++,newAttr.namespaceURI===NAMESPACE$2.XMLNS&&delete el._nsMap[newAttr.prefix?newAttr.localName:""]}function _onUpdateChild(doc,el,newChild){if(doc&&doc._inc){doc._inc++;var cs=el.childNodes;if(newChild)cs[cs.length++]=newChild;else{for(var child=el.firstChild,i=0;child;)cs[i++]=child,child=child.nextSibling;cs.length=i,delete cs[cs.length]}}}function _removeChild(parentNode,child){var previous=child.previousSibling,next=child.nextSibling;return previous?previous.nextSibling=next:parentNode.firstChild=next,next?next.previousSibling=previous:parentNode.lastChild=previous,child.parentNode=null,child.previousSibling=null,child.nextSibling=null,_onUpdateChild(parentNode.ownerDocument,parentNode),child}function isDocTypeNode(node){return node&&node.nodeType===Node.DOCUMENT_TYPE_NODE}function isElementNode(node){return node&&node.nodeType===Node.ELEMENT_NODE}function isTextNode(node){return node&&node.nodeType===Node.TEXT_NODE}function isElementInsertionPossible(doc,child){var parentChildNodes=doc.childNodes||[];if(find(parentChildNodes,isElementNode)||isDocTypeNode(child))return!1;var docTypeNode=find(parentChildNodes,isDocTypeNode);return!(child&&docTypeNode&&parentChildNodes.indexOf(docTypeNode)>parentChildNodes.indexOf(child))}function isElementReplacementPossible(doc,child){var parentChildNodes=doc.childNodes||[];if(find(parentChildNodes,(function(node){return isElementNode(node)&&node!==child})))return!1;var docTypeNode=find(parentChildNodes,isDocTypeNode);return!(child&&docTypeNode&&parentChildNodes.indexOf(docTypeNode)>parentChildNodes.indexOf(child))}function assertPreInsertionValidity1to5(parent,node,child){if(!function(node){return node&&(node.nodeType===Node.DOCUMENT_NODE||node.nodeType===Node.DOCUMENT_FRAGMENT_NODE||node.nodeType===Node.ELEMENT_NODE)}(parent))throw new DOMException(HIERARCHY_REQUEST_ERR,"Unexpected parent node type "+parent.nodeType);if(child&&child.parentNode!==parent)throw new DOMException(NOT_FOUND_ERR,"child not in parent");if(!function(node){return node&&(isElementNode(node)||isTextNode(node)||isDocTypeNode(node)||node.nodeType===Node.DOCUMENT_FRAGMENT_NODE||node.nodeType===Node.COMMENT_NODE||node.nodeType===Node.PROCESSING_INSTRUCTION_NODE)}(node)||isDocTypeNode(node)&&parent.nodeType!==Node.DOCUMENT_NODE)throw new DOMException(HIERARCHY_REQUEST_ERR,"Unexpected node type "+node.nodeType+" for parent node type "+parent.nodeType)}function assertPreInsertionValidityInDocument(parent,node,child){var parentChildNodes=parent.childNodes||[],nodeChildNodes=node.childNodes||[];if(node.nodeType===Node.DOCUMENT_FRAGMENT_NODE){var nodeChildElements=nodeChildNodes.filter(isElementNode);if(nodeChildElements.length>1||find(nodeChildNodes,isTextNode))throw new DOMException(HIERARCHY_REQUEST_ERR,"More than one element or text in fragment");if(1===nodeChildElements.length&&!isElementInsertionPossible(parent,child))throw new DOMException(HIERARCHY_REQUEST_ERR,"Element in fragment can not be inserted before doctype")}if(isElementNode(node)&&!isElementInsertionPossible(parent,child))throw new DOMException(HIERARCHY_REQUEST_ERR,"Only one element can be added and only after doctype");if(isDocTypeNode(node)){if(find(parentChildNodes,isDocTypeNode))throw new DOMException(HIERARCHY_REQUEST_ERR,"Only one doctype is allowed");var parentElementChild=find(parentChildNodes,isElementNode);if(child&&parentChildNodes.indexOf(parentElementChild)<parentChildNodes.indexOf(child))throw new DOMException(HIERARCHY_REQUEST_ERR,"Doctype can only be inserted before an element");if(!child&&parentElementChild)throw new DOMException(HIERARCHY_REQUEST_ERR,"Doctype can not be appended since element is present")}}function assertPreReplacementValidityInDocument(parent,node,child){var parentChildNodes=parent.childNodes||[],nodeChildNodes=node.childNodes||[];if(node.nodeType===Node.DOCUMENT_FRAGMENT_NODE){var nodeChildElements=nodeChildNodes.filter(isElementNode);if(nodeChildElements.length>1||find(nodeChildNodes,isTextNode))throw new DOMException(HIERARCHY_REQUEST_ERR,"More than one element or text in fragment");if(1===nodeChildElements.length&&!isElementReplacementPossible(parent,child))throw new DOMException(HIERARCHY_REQUEST_ERR,"Element in fragment can not be inserted before doctype")}if(isElementNode(node)&&!isElementReplacementPossible(parent,child))throw new DOMException(HIERARCHY_REQUEST_ERR,"Only one element can be added and only after doctype");if(isDocTypeNode(node)){function hasDoctypeChildThatIsNotChild(node){return isDocTypeNode(node)&&node!==child}if(find(parentChildNodes,hasDoctypeChildThatIsNotChild))throw new DOMException(HIERARCHY_REQUEST_ERR,"Only one doctype is allowed");var parentElementChild=find(parentChildNodes,isElementNode);if(child&&parentChildNodes.indexOf(parentElementChild)<parentChildNodes.indexOf(child))throw new DOMException(HIERARCHY_REQUEST_ERR,"Doctype can only be inserted before an element")}}function _insertBefore(parent,node,child,_inDocumentAssertion){assertPreInsertionValidity1to5(parent,node,child),parent.nodeType===Node.DOCUMENT_NODE&&(_inDocumentAssertion||assertPreInsertionValidityInDocument)(parent,node,child);var cp=node.parentNode;if(cp&&cp.removeChild(node),node.nodeType===DOCUMENT_FRAGMENT_NODE){var newFirst=node.firstChild;if(null==newFirst)return node;var newLast=node.lastChild}else newFirst=newLast=node;var pre=child?child.previousSibling:parent.lastChild;newFirst.previousSibling=pre,newLast.nextSibling=child,pre?pre.nextSibling=newFirst:parent.firstChild=newFirst,null==child?parent.lastChild=newLast:child.previousSibling=newLast;do{newFirst.parentNode=parent}while(newFirst!==newLast&&(newFirst=newFirst.nextSibling));return _onUpdateChild(parent.ownerDocument||parent,parent),node.nodeType==DOCUMENT_FRAGMENT_NODE&&(node.firstChild=node.lastChild=null),node}function Element(){this._nsMap={}}function Attr(){}function CharacterData(){}function Text(){}function Comment(){}function CDATASection(){}function DocumentType(){}function Notation(){}function Entity(){}function EntityReference(){}function DocumentFragment(){}function ProcessingInstruction(){}function XMLSerializer(){}function nodeSerializeToString(isHtml,nodeFilter){var buf=[],refNode=9==this.nodeType&&this.documentElement||this,prefix=refNode.prefix,uri=refNode.namespaceURI;if(uri&&null==prefix&&null==(prefix=refNode.lookupPrefix(uri)))var visibleNamespaces=[{namespace:uri,prefix:null}];return serializeToString(this,buf,isHtml,nodeFilter,visibleNamespaces),buf.join("")}function needNamespaceDefine(node,isHTML,visibleNamespaces){var prefix=node.prefix||"",uri=node.namespaceURI;if(!uri)return!1;if("xml"===prefix&&uri===NAMESPACE$2.XML||uri===NAMESPACE$2.XMLNS)return!1;for(var i=visibleNamespaces.length;i--;){var ns=visibleNamespaces[i];if(ns.prefix===prefix)return ns.namespace!==uri}return!0}function addSerializedAttribute(buf,qualifiedName,value){buf.push(" ",qualifiedName,'="',value.replace(/[<>&"\t\n\r]/g,_xmlEncoder),'"')}function serializeToString(node,buf,isHTML,nodeFilter,visibleNamespaces){if(visibleNamespaces||(visibleNamespaces=[]),nodeFilter){if(!(node=nodeFilter(node)))return;if("string"==typeof node)return void buf.push(node)}switch(node.nodeType){case ELEMENT_NODE:var attrs=node.attributes,len=attrs.length,child=node.firstChild,nodeName=node.tagName,prefixedNodeName=nodeName;if(!(isHTML=NAMESPACE$2.isHTML(node.namespaceURI)||isHTML)&&!node.prefix&&node.namespaceURI){for(var defaultNS,ai=0;ai<attrs.length;ai++)if("xmlns"===attrs.item(ai).name){defaultNS=attrs.item(ai).value;break}if(!defaultNS)for(var nsi=visibleNamespaces.length-1;nsi>=0;nsi--){if(""===(namespace=visibleNamespaces[nsi]).prefix&&namespace.namespace===node.namespaceURI){defaultNS=namespace.namespace;break}}if(defaultNS!==node.namespaceURI)for(nsi=visibleNamespaces.length-1;nsi>=0;nsi--){var namespace;if((namespace=visibleNamespaces[nsi]).namespace===node.namespaceURI){namespace.prefix&&(prefixedNodeName=namespace.prefix+":"+nodeName);break}}}buf.push("<",prefixedNodeName);for(var i=0;i<len;i++){"xmlns"==(attr=attrs.item(i)).prefix?visibleNamespaces.push({prefix:attr.localName,namespace:attr.value}):"xmlns"==attr.nodeName&&visibleNamespaces.push({prefix:"",namespace:attr.value})}for(i=0;i<len;i++){var attr,prefix,uri;if(needNamespaceDefine(attr=attrs.item(i),0,visibleNamespaces))addSerializedAttribute(buf,(prefix=attr.prefix||"")?"xmlns:"+prefix:"xmlns",uri=attr.namespaceURI),visibleNamespaces.push({prefix:prefix,namespace:uri});serializeToString(attr,buf,isHTML,nodeFilter,visibleNamespaces)}if(nodeName===prefixedNodeName&&needNamespaceDefine(node,0,visibleNamespaces))addSerializedAttribute(buf,(prefix=node.prefix||"")?"xmlns:"+prefix:"xmlns",uri=node.namespaceURI),visibleNamespaces.push({prefix:prefix,namespace:uri});if(child||isHTML&&!/^(?:meta|link|img|br|hr|input)$/i.test(nodeName)){if(buf.push(">"),isHTML&&/^script$/i.test(nodeName))for(;child;)child.data?buf.push(child.data):serializeToString(child,buf,isHTML,nodeFilter,visibleNamespaces.slice()),child=child.nextSibling;else for(;child;)serializeToString(child,buf,isHTML,nodeFilter,visibleNamespaces.slice()),child=child.nextSibling;buf.push("</",prefixedNodeName,">")}else buf.push("/>");return;case DOCUMENT_NODE:case DOCUMENT_FRAGMENT_NODE:for(child=node.firstChild;child;)serializeToString(child,buf,isHTML,nodeFilter,visibleNamespaces.slice()),child=child.nextSibling;return;case ATTRIBUTE_NODE:return addSerializedAttribute(buf,node.name,node.value);case TEXT_NODE:return buf.push(node.data.replace(/[<&>]/g,_xmlEncoder));case CDATA_SECTION_NODE:return buf.push("<![CDATA[",node.data,"]]>");case COMMENT_NODE:return buf.push("\x3c!--",node.data,"--\x3e");case DOCUMENT_TYPE_NODE:var pubid=node.publicId,sysid=node.systemId;if(buf.push("<!DOCTYPE ",node.name),pubid)buf.push(" PUBLIC ",pubid),sysid&&"."!=sysid&&buf.push(" ",sysid),buf.push(">");else if(sysid&&"."!=sysid)buf.push(" SYSTEM ",sysid,">");else{var sub=node.internalSubset;sub&&buf.push(" [",sub,"]"),buf.push(">")}return;case PROCESSING_INSTRUCTION_NODE:return buf.push("<?",node.target," ",node.data,"?>");case ENTITY_REFERENCE_NODE:return buf.push("&",node.nodeName,";");default:buf.push("??",node.nodeName)}}function importNode(doc,node,deep){var node2;switch(node.nodeType){case ELEMENT_NODE:(node2=node.cloneNode(!1)).ownerDocument=doc;case DOCUMENT_FRAGMENT_NODE:break;case ATTRIBUTE_NODE:deep=!0}if(node2||(node2=node.cloneNode(!1)),node2.ownerDocument=doc,node2.parentNode=null,deep)for(var child=node.firstChild;child;)node2.appendChild(importNode(doc,child,deep)),child=child.nextSibling;return node2}function cloneNode(doc,node,deep){var node2=new node.constructor;for(var n in node)if(Object.prototype.hasOwnProperty.call(node,n)){var v=node[n];"object"!=typeof v&&v!=node2[n]&&(node2[n]=v)}switch(node.childNodes&&(node2.childNodes=new NodeList),node2.ownerDocument=doc,node2.nodeType){case ELEMENT_NODE:var attrs=node.attributes,attrs2=node2.attributes=new NamedNodeMap,len=attrs.length;attrs2._ownerElement=node2;for(var i=0;i<len;i++)node2.setAttributeNode(cloneNode(doc,attrs.item(i),!0));break;case ATTRIBUTE_NODE:deep=!0}if(deep)for(var child=node.firstChild;child;)node2.appendChild(cloneNode(doc,child,deep)),child=child.nextSibling;return node2}function __set__(object,key,value){object[key]=value}ExceptionCode.INVALID_STATE_ERR=(ExceptionMessage[11]="Invalid state",11),ExceptionCode.SYNTAX_ERR=(ExceptionMessage[12]="Syntax error",12),ExceptionCode.INVALID_MODIFICATION_ERR=(ExceptionMessage[13]="Invalid modification",13),ExceptionCode.NAMESPACE_ERR=(ExceptionMessage[14]="Invalid namespace",14),ExceptionCode.INVALID_ACCESS_ERR=(ExceptionMessage[15]="Invalid access",15),DOMException.prototype=Error.prototype,copy(ExceptionCode,DOMException),NodeList.prototype={length:0,item:function(index){return this[index]||null},toString:function(isHTML,nodeFilter){for(var buf=[],i=0;i<this.length;i++)serializeToString(this[i],buf,isHTML,nodeFilter);return buf.join("")},filter:function(predicate){return Array.prototype.filter.call(this,predicate)},indexOf:function(item){return Array.prototype.indexOf.call(this,item)}},LiveNodeList.prototype.item=function(i){return _updateLiveList(this),this[i]},_extends(LiveNodeList,NodeList),NamedNodeMap.prototype={length:0,item:NodeList.prototype.item,getNamedItem:function(key){for(var i=this.length;i--;){var attr=this[i];if(attr.nodeName==key)return attr}},setNamedItem:function(attr){var el=attr.ownerElement;if(el&&el!=this._ownerElement)throw new DOMException(INUSE_ATTRIBUTE_ERR);var oldAttr=this.getNamedItem(attr.nodeName);return _addNamedNode(this._ownerElement,this,attr,oldAttr),oldAttr},setNamedItemNS:function(attr){var oldAttr,el=attr.ownerElement;if(el&&el!=this._ownerElement)throw new DOMException(INUSE_ATTRIBUTE_ERR);return oldAttr=this.getNamedItemNS(attr.namespaceURI,attr.localName),_addNamedNode(this._ownerElement,this,attr,oldAttr),oldAttr},removeNamedItem:function(key){var attr=this.getNamedItem(key);return _removeNamedNode(this._ownerElement,this,attr),attr},removeNamedItemNS:function(namespaceURI,localName){var attr=this.getNamedItemNS(namespaceURI,localName);return _removeNamedNode(this._ownerElement,this,attr),attr},getNamedItemNS:function(namespaceURI,localName){for(var i=this.length;i--;){var node=this[i];if(node.localName==localName&&node.namespaceURI==namespaceURI)return node}return null}},DOMImplementation$1.prototype={hasFeature:function(feature,version){return!0},createDocument:function(namespaceURI,qualifiedName,doctype){var doc=new Document;if(doc.implementation=this,doc.childNodes=new NodeList,doc.doctype=doctype||null,doctype&&doc.appendChild(doctype),qualifiedName){var root=doc.createElementNS(namespaceURI,qualifiedName);doc.appendChild(root)}return doc},createDocumentType:function(qualifiedName,publicId,systemId){var node=new DocumentType;return node.name=qualifiedName,node.nodeName=qualifiedName,node.publicId=publicId||"",node.systemId=systemId||"",node}},Node.prototype={firstChild:null,lastChild:null,previousSibling:null,nextSibling:null,attributes:null,parentNode:null,childNodes:null,ownerDocument:null,nodeValue:null,namespaceURI:null,prefix:null,localName:null,insertBefore:function(newChild,refChild){return _insertBefore(this,newChild,refChild)},replaceChild:function(newChild,oldChild){_insertBefore(this,newChild,oldChild,assertPreReplacementValidityInDocument),oldChild&&this.removeChild(oldChild)},removeChild:function(oldChild){return _removeChild(this,oldChild)},appendChild:function(newChild){return this.insertBefore(newChild,null)},hasChildNodes:function(){return null!=this.firstChild},cloneNode:function(deep){return cloneNode(this.ownerDocument||this,this,deep)},normalize:function(){for(var child=this.firstChild;child;){var next=child.nextSibling;next&&next.nodeType==TEXT_NODE&&child.nodeType==TEXT_NODE?(this.removeChild(next),child.appendData(next.data)):(child.normalize(),child=next)}},isSupported:function(feature,version){return this.ownerDocument.implementation.hasFeature(feature,version)},hasAttributes:function(){return this.attributes.length>0},lookupPrefix:function(namespaceURI){for(var el=this;el;){var map=el._nsMap;if(map)for(var n in map)if(Object.prototype.hasOwnProperty.call(map,n)&&map[n]===namespaceURI)return n;el=el.nodeType==ATTRIBUTE_NODE?el.ownerDocument:el.parentNode}return null},lookupNamespaceURI:function(prefix){for(var el=this;el;){var map=el._nsMap;if(map&&Object.prototype.hasOwnProperty.call(map,prefix))return map[prefix];el=el.nodeType==ATTRIBUTE_NODE?el.ownerDocument:el.parentNode}return null},isDefaultNamespace:function(namespaceURI){return null==this.lookupPrefix(namespaceURI)}},copy(NodeType,Node),copy(NodeType,Node.prototype),Document.prototype={nodeName:"#document",nodeType:DOCUMENT_NODE,doctype:null,documentElement:null,_inc:1,insertBefore:function(newChild,refChild){if(newChild.nodeType==DOCUMENT_FRAGMENT_NODE){for(var child=newChild.firstChild;child;){var next=child.nextSibling;this.insertBefore(child,refChild),child=next}return newChild}return _insertBefore(this,newChild,refChild),newChild.ownerDocument=this,null===this.documentElement&&newChild.nodeType===ELEMENT_NODE&&(this.documentElement=newChild),newChild},removeChild:function(oldChild){return this.documentElement==oldChild&&(this.documentElement=null),_removeChild(this,oldChild)},replaceChild:function(newChild,oldChild){_insertBefore(this,newChild,oldChild,assertPreReplacementValidityInDocument),newChild.ownerDocument=this,oldChild&&this.removeChild(oldChild),isElementNode(newChild)&&(this.documentElement=newChild)},importNode:function(importedNode,deep){return importNode(this,importedNode,deep)},getElementById:function(id){var rtv=null;return _visitNode(this.documentElement,(function(node){if(node.nodeType==ELEMENT_NODE&&node.getAttribute("id")==id)return rtv=node,!0})),rtv},getElementsByClassName:function(classNames){var classNamesSet=toOrderedSet(classNames);return new LiveNodeList(this,(function(base){var ls=[];return classNamesSet.length>0&&_visitNode(base.documentElement,(function(node){if(node!==base&&node.nodeType===ELEMENT_NODE){var nodeClassNames=node.getAttribute("class");if(nodeClassNames){var matches=classNames===nodeClassNames;if(!matches){var nodeClassNamesSet=toOrderedSet(nodeClassNames);matches=classNamesSet.every((list=nodeClassNamesSet,function(element){return list&&-1!==list.indexOf(element)}))}matches&&ls.push(node)}}var list})),ls}))},createElement:function(tagName){var node=new Element;return node.ownerDocument=this,node.nodeName=tagName,node.tagName=tagName,node.localName=tagName,node.childNodes=new NodeList,(node.attributes=new NamedNodeMap)._ownerElement=node,node},createDocumentFragment:function(){var node=new DocumentFragment;return node.ownerDocument=this,node.childNodes=new NodeList,node},createTextNode:function(data){var node=new Text;return node.ownerDocument=this,node.appendData(data),node},createComment:function(data){var node=new Comment;return node.ownerDocument=this,node.appendData(data),node},createCDATASection:function(data){var node=new CDATASection;return node.ownerDocument=this,node.appendData(data),node},createProcessingInstruction:function(target,data){var node=new ProcessingInstruction;return node.ownerDocument=this,node.tagName=node.target=target,node.nodeValue=node.data=data,node},createAttribute:function(name){var node=new Attr;return node.ownerDocument=this,node.name=name,node.nodeName=name,node.localName=name,node.specified=!0,node},createEntityReference:function(name){var node=new EntityReference;return node.ownerDocument=this,node.nodeName=name,node},createElementNS:function(namespaceURI,qualifiedName){var node=new Element,pl=qualifiedName.split(":"),attrs=node.attributes=new NamedNodeMap;return node.childNodes=new NodeList,node.ownerDocument=this,node.nodeName=qualifiedName,node.tagName=qualifiedName,node.namespaceURI=namespaceURI,2==pl.length?(node.prefix=pl[0],node.localName=pl[1]):node.localName=qualifiedName,attrs._ownerElement=node,node},createAttributeNS:function(namespaceURI,qualifiedName){var node=new Attr,pl=qualifiedName.split(":");return node.ownerDocument=this,node.nodeName=qualifiedName,node.name=qualifiedName,node.namespaceURI=namespaceURI,node.specified=!0,2==pl.length?(node.prefix=pl[0],node.localName=pl[1]):node.localName=qualifiedName,node}},_extends(Document,Node),Element.prototype={nodeType:ELEMENT_NODE,hasAttribute:function(name){return null!=this.getAttributeNode(name)},getAttribute:function(name){var attr=this.getAttributeNode(name);return attr&&attr.value||""},getAttributeNode:function(name){return this.attributes.getNamedItem(name)},setAttribute:function(name,value){var attr=this.ownerDocument.createAttribute(name);attr.value=attr.nodeValue=""+value,this.setAttributeNode(attr)},removeAttribute:function(name){var attr=this.getAttributeNode(name);attr&&this.removeAttributeNode(attr)},appendChild:function(newChild){return newChild.nodeType===DOCUMENT_FRAGMENT_NODE?this.insertBefore(newChild,null):function(parentNode,newChild){return newChild.parentNode&&newChild.parentNode.removeChild(newChild),newChild.parentNode=parentNode,newChild.previousSibling=parentNode.lastChild,newChild.nextSibling=null,newChild.previousSibling?newChild.previousSibling.nextSibling=newChild:parentNode.firstChild=newChild,parentNode.lastChild=newChild,_onUpdateChild(parentNode.ownerDocument,parentNode,newChild),newChild}(this,newChild)},setAttributeNode:function(newAttr){return this.attributes.setNamedItem(newAttr)},setAttributeNodeNS:function(newAttr){return this.attributes.setNamedItemNS(newAttr)},removeAttributeNode:function(oldAttr){return this.attributes.removeNamedItem(oldAttr.nodeName)},removeAttributeNS:function(namespaceURI,localName){var old=this.getAttributeNodeNS(namespaceURI,localName);old&&this.removeAttributeNode(old)},hasAttributeNS:function(namespaceURI,localName){return null!=this.getAttributeNodeNS(namespaceURI,localName)},getAttributeNS:function(namespaceURI,localName){var attr=this.getAttributeNodeNS(namespaceURI,localName);return attr&&attr.value||""},setAttributeNS:function(namespaceURI,qualifiedName,value){var attr=this.ownerDocument.createAttributeNS(namespaceURI,qualifiedName);attr.value=attr.nodeValue=""+value,this.setAttributeNode(attr)},getAttributeNodeNS:function(namespaceURI,localName){return this.attributes.getNamedItemNS(namespaceURI,localName)},getElementsByTagName:function(tagName){return new LiveNodeList(this,(function(base){var ls=[];return _visitNode(base,(function(node){node===base||node.nodeType!=ELEMENT_NODE||"*"!==tagName&&node.tagName!=tagName||ls.push(node)})),ls}))},getElementsByTagNameNS:function(namespaceURI,localName){return new LiveNodeList(this,(function(base){var ls=[];return _visitNode(base,(function(node){node===base||node.nodeType!==ELEMENT_NODE||"*"!==namespaceURI&&node.namespaceURI!==namespaceURI||"*"!==localName&&node.localName!=localName||ls.push(node)})),ls}))}},Document.prototype.getElementsByTagName=Element.prototype.getElementsByTagName,Document.prototype.getElementsByTagNameNS=Element.prototype.getElementsByTagNameNS,_extends(Element,Node),Attr.prototype.nodeType=ATTRIBUTE_NODE,_extends(Attr,Node),CharacterData.prototype={data:"",substringData:function(offset,count){return this.data.substring(offset,offset+count)},appendData:function(text){text=this.data+text,this.nodeValue=this.data=text,this.length=text.length},insertData:function(offset,text){this.replaceData(offset,0,text)},appendChild:function(newChild){throw new Error(ExceptionMessage[HIERARCHY_REQUEST_ERR])},deleteData:function(offset,count){this.replaceData(offset,count,"")},replaceData:function(offset,count,text){text=this.data.substring(0,offset)+text+this.data.substring(offset+count),this.nodeValue=this.data=text,this.length=text.length}},_extends(CharacterData,Node),Text.prototype={nodeName:"#text",nodeType:TEXT_NODE,splitText:function(offset){var text=this.data,newText=text.substring(offset);text=text.substring(0,offset),this.data=this.nodeValue=text,this.length=text.length;var newNode=this.ownerDocument.createTextNode(newText);return this.parentNode&&this.parentNode.insertBefore(newNode,this.nextSibling),newNode}},_extends(Text,CharacterData),Comment.prototype={nodeName:"#comment",nodeType:COMMENT_NODE},_extends(Comment,CharacterData),CDATASection.prototype={nodeName:"#cdata-section",nodeType:CDATA_SECTION_NODE},_extends(CDATASection,CharacterData),DocumentType.prototype.nodeType=DOCUMENT_TYPE_NODE,_extends(DocumentType,Node),Notation.prototype.nodeType=NOTATION_NODE,_extends(Notation,Node),Entity.prototype.nodeType=ENTITY_NODE,_extends(Entity,Node),EntityReference.prototype.nodeType=ENTITY_REFERENCE_NODE,_extends(EntityReference,Node),DocumentFragment.prototype.nodeName="#document-fragment",DocumentFragment.prototype.nodeType=DOCUMENT_FRAGMENT_NODE,_extends(DocumentFragment,Node),ProcessingInstruction.prototype.nodeType=PROCESSING_INSTRUCTION_NODE,_extends(ProcessingInstruction,Node),XMLSerializer.prototype.serializeToString=function(node,isHtml,nodeFilter){return nodeSerializeToString.call(node,isHtml,nodeFilter)},Node.prototype.toString=nodeSerializeToString;try{if(Object.defineProperty){function getTextContent(node){switch(node.nodeType){case ELEMENT_NODE:case DOCUMENT_FRAGMENT_NODE:var buf=[];for(node=node.firstChild;node;)7!==node.nodeType&&8!==node.nodeType&&buf.push(getTextContent(node)),node=node.nextSibling;return buf.join("");default:return node.nodeValue}}Object.defineProperty(LiveNodeList.prototype,"length",{get:function(){return _updateLiveList(this),this.$$length}}),Object.defineProperty(Node.prototype,"textContent",{get:function(){return getTextContent(this)},set:function(data){switch(this.nodeType){case ELEMENT_NODE:case DOCUMENT_FRAGMENT_NODE:for(;this.firstChild;)this.removeChild(this.firstChild);(data||String(data))&&this.appendChild(this.ownerDocument.createTextNode(data));break;default:this.data=data,this.value=data,this.nodeValue=data}}}),__set__=function(object,key,value){object["$$"+key]=value}}}catch(e){}var dom={DocumentType:DocumentType,DOMException:DOMException,DOMImplementation:DOMImplementation$1,Element:Element,Node:Node,NodeList:NodeList,XMLSerializer:XMLSerializer},entities=createCommonjsModule((function(module,exports){var freeze=conventions.freeze;exports.XML_ENTITIES=freeze({amp:"&",apos:"'",gt:">",lt:"<",quot:'"'}),exports.HTML_ENTITIES=freeze({lt:"<",gt:">",amp:"&",quot:'"',apos:"'",Agrave:"À",Aacute:"Á",Acirc:"Â",Atilde:"Ã",Auml:"Ä",Aring:"Å",AElig:"Æ",Ccedil:"Ç",Egrave:"È",Eacute:"É",Ecirc:"Ê",Euml:"Ë",Igrave:"Ì",Iacute:"Í",Icirc:"Î",Iuml:"Ï",ETH:"Ð",Ntilde:"Ñ",Ograve:"Ò",Oacute:"Ó",Ocirc:"Ô",Otilde:"Õ",Ouml:"Ö",Oslash:"Ø",Ugrave:"Ù",Uacute:"Ú",Ucirc:"Û",Uuml:"Ü",Yacute:"Ý",THORN:"Þ",szlig:"ß",agrave:"à",aacute:"á",acirc:"â",atilde:"ã",auml:"ä",aring:"å",aelig:"æ",ccedil:"ç",egrave:"è",eacute:"é",ecirc:"ê",euml:"ë",igrave:"ì",iacute:"í",icirc:"î",iuml:"ï",eth:"ð",ntilde:"ñ",ograve:"ò",oacute:"ó",ocirc:"ô",otilde:"õ",ouml:"ö",oslash:"ø",ugrave:"ù",uacute:"ú",ucirc:"û",uuml:"ü",yacute:"ý",thorn:"þ",yuml:"ÿ",nbsp:" ",iexcl:"¡",cent:"¢",pound:"£",curren:"¤",yen:"¥",brvbar:"¦",sect:"§",uml:"¨",copy:"©",ordf:"ª",laquo:"«",not:"¬",shy:"­­",reg:"®",macr:"¯",deg:"°",plusmn:"±",sup2:"²",sup3:"³",acute:"´",micro:"µ",para:"¶",middot:"·",cedil:"¸",sup1:"¹",ordm:"º",raquo:"»",frac14:"¼",frac12:"½",frac34:"¾",iquest:"¿",times:"×",divide:"÷",forall:"∀",part:"∂",exist:"∃",empty:"∅",nabla:"∇",isin:"∈",notin:"∉",ni:"∋",prod:"∏",sum:"∑",minus:"−",lowast:"∗",radic:"√",prop:"∝",infin:"∞",ang:"∠",and:"∧",or:"∨",cap:"∩",cup:"∪",int:"∫",there4:"∴",sim:"∼",cong:"≅",asymp:"≈",ne:"≠",equiv:"≡",le:"≤",ge:"≥",sub:"⊂",sup:"⊃",nsub:"⊄",sube:"⊆",supe:"⊇",oplus:"⊕",otimes:"⊗",perp:"⊥",sdot:"⋅",Alpha:"Α",Beta:"Β",Gamma:"Γ",Delta:"Δ",Epsilon:"Ε",Zeta:"Ζ",Eta:"Η",Theta:"Θ",Iota:"Ι",Kappa:"Κ",Lambda:"Λ",Mu:"Μ",Nu:"Ν",Xi:"Ξ",Omicron:"Ο",Pi:"Π",Rho:"Ρ",Sigma:"Σ",Tau:"Τ",Upsilon:"Υ",Phi:"Φ",Chi:"Χ",Psi:"Ψ",Omega:"Ω",alpha:"α",beta:"β",gamma:"γ",delta:"δ",epsilon:"ε",zeta:"ζ",eta:"η",theta:"θ",iota:"ι",kappa:"κ",lambda:"λ",mu:"μ",nu:"ν",xi:"ξ",omicron:"ο",pi:"π",rho:"ρ",sigmaf:"ς",sigma:"σ",tau:"τ",upsilon:"υ",phi:"φ",chi:"χ",psi:"ψ",omega:"ω",thetasym:"ϑ",upsih:"ϒ",piv:"ϖ",OElig:"Œ",oelig:"œ",Scaron:"Š",scaron:"š",Yuml:"Ÿ",fnof:"ƒ",circ:"ˆ",tilde:"˜",ensp:" ",emsp:" ",thinsp:" ",zwnj:"‌",zwj:"‍",lrm:"‎",rlm:"‏",ndash:"–",mdash:"—",lsquo:"‘",rsquo:"’",sbquo:"‚",ldquo:"“",rdquo:"”",bdquo:"„",dagger:"†",Dagger:"‡",bull:"•",hellip:"…",permil:"‰",prime:"′",Prime:"″",lsaquo:"‹",rsaquo:"›",oline:"‾",euro:"€",trade:"™",larr:"←",uarr:"↑",rarr:"→",darr:"↓",harr:"↔",crarr:"↵",lceil:"⌈",rceil:"⌉",lfloor:"⌊",rfloor:"⌋",loz:"◊",spades:"♠",clubs:"♣",hearts:"♥",diams:"♦"}),exports.entityMap=exports.HTML_ENTITIES}));entities.XML_ENTITIES,entities.HTML_ENTITIES,entities.entityMap;var NAMESPACE$1=conventions.NAMESPACE,nameStartChar=/[A-Z_a-z\xC0-\xD6\xD8-\xF6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]/,nameChar=new RegExp("[\\-\\.0-9"+nameStartChar.source.slice(1,-1)+"\\u00B7\\u0300-\\u036F\\u203F-\\u2040]"),tagNamePattern=new RegExp("^"+nameStartChar.source+nameChar.source+"*(?::"+nameStartChar.source+nameChar.source+"*)?$");function ParseError$1(message,locator){this.message=message,this.locator=locator,Error.captureStackTrace&&Error.captureStackTrace(this,ParseError$1)}function XMLReader$1(){}function copyLocator(f,t){return t.lineNumber=f.lineNumber,t.columnNumber=f.columnNumber,t}function parseElementStartPart(source,start,el,currentNSMap,entityReplacer,errorHandler){function addAttribute(qname,value,startIndex){el.attributeNames.hasOwnProperty(qname)&&errorHandler.fatalError("Attribute "+qname+" redefined"),el.addValue(qname,value.replace(/[\t\n\r]/g," ").replace(/&#?\w+;/g,entityReplacer),startIndex)}for(var attrName,p=++start,s=0;;){var c=source.charAt(p);switch(c){case"=":if(1===s)attrName=source.slice(start,p),s=3;else{if(2!==s)throw new Error("attribute equal must after attrName");s=3}break;case"'":case'"':if(3===s||1===s){if(1===s&&(errorHandler.warning('attribute value must after "="'),attrName=source.slice(start,p)),start=p+1,!((p=source.indexOf(c,start))>0))throw new Error("attribute value no end '"+c+"' match");addAttribute(attrName,value=source.slice(start,p),start-1),s=5}else{if(4!=s)throw new Error('attribute value must after "="');addAttribute(attrName,value=source.slice(start,p),start),errorHandler.warning('attribute "'+attrName+'" missed start quot('+c+")!!"),start=p+1,s=5}break;case"/":switch(s){case 0:el.setTagName(source.slice(start,p));case 5:case 6:case 7:s=7,el.closed=!0;case 4:case 1:case 2:break;default:throw new Error("attribute invalid close char('/')")}break;case"":return errorHandler.error("unexpected end of input"),0==s&&el.setTagName(source.slice(start,p)),p;case">":switch(s){case 0:el.setTagName(source.slice(start,p));case 5:case 6:case 7:break;case 4:case 1:"/"===(value=source.slice(start,p)).slice(-1)&&(el.closed=!0,value=value.slice(0,-1));case 2:2===s&&(value=attrName),4==s?(errorHandler.warning('attribute "'+value+'" missed quot(")!'),addAttribute(attrName,value,start)):(NAMESPACE$1.isHTML(currentNSMap[""])&&value.match(/^(?:disabled|checked|selected)$/i)||errorHandler.warning('attribute "'+value+'" missed value!! "'+value+'" instead!!'),addAttribute(value,value,start));break;case 3:throw new Error("attribute value missed!!")}return p;case"€":c=" ";default:if(c<=" ")switch(s){case 0:el.setTagName(source.slice(start,p)),s=6;break;case 1:attrName=source.slice(start,p),s=2;break;case 4:var value=source.slice(start,p);errorHandler.warning('attribute "'+value+'" missed quot(")!!'),addAttribute(attrName,value,start);case 5:s=6}else switch(s){case 2:el.tagName,NAMESPACE$1.isHTML(currentNSMap[""])&&attrName.match(/^(?:disabled|checked|selected)$/i)||errorHandler.warning('attribute "'+attrName+'" missed value!! "'+attrName+'" instead2!!'),addAttribute(attrName,attrName,start),start=p,s=1;break;case 5:errorHandler.warning('attribute space is required"'+attrName+'"!!');case 6:s=1,start=p;break;case 3:s=4,start=p;break;case 7:throw new Error("elements closed character '/' and '>' must be connected to")}}p++}}function appendElement$1(el,domBuilder,currentNSMap){for(var tagName=el.tagName,localNSMap=null,i=el.length;i--;){var a=el[i],qName=a.qName,value=a.value;if((nsp=qName.indexOf(":"))>0)var prefix=a.prefix=qName.slice(0,nsp),localName=qName.slice(nsp+1),nsPrefix="xmlns"===prefix&&localName;else localName=qName,prefix=null,nsPrefix="xmlns"===qName&&"";a.localName=localName,!1!==nsPrefix&&(null==localNSMap&&(localNSMap={},_copy(currentNSMap,currentNSMap={})),currentNSMap[nsPrefix]=localNSMap[nsPrefix]=value,a.uri=NAMESPACE$1.XMLNS,domBuilder.startPrefixMapping(nsPrefix,value))}for(i=el.length;i--;){(prefix=(a=el[i]).prefix)&&("xml"===prefix&&(a.uri=NAMESPACE$1.XML),"xmlns"!==prefix&&(a.uri=currentNSMap[prefix||""]))}var nsp;(nsp=tagName.indexOf(":"))>0?(prefix=el.prefix=tagName.slice(0,nsp),localName=el.localName=tagName.slice(nsp+1)):(prefix=null,localName=el.localName=tagName);var ns=el.uri=currentNSMap[prefix||""];if(domBuilder.startElement(ns,localName,tagName,el),!el.closed)return el.currentNSMap=currentNSMap,el.localNSMap=localNSMap,!0;if(domBuilder.endElement(ns,localName,tagName),localNSMap)for(prefix in localNSMap)Object.prototype.hasOwnProperty.call(localNSMap,prefix)&&domBuilder.endPrefixMapping(prefix)}function parseHtmlSpecialContent(source,elStartEnd,tagName,entityReplacer,domBuilder){if(/^(?:script|textarea)$/i.test(tagName)){var elEndStart=source.indexOf("</"+tagName+">",elStartEnd),text=source.substring(elStartEnd+1,elEndStart);if(/[&<]/.test(text))return/^script$/i.test(tagName)?(domBuilder.characters(text,0,text.length),elEndStart):(text=text.replace(/&#?\w+;/g,entityReplacer),domBuilder.characters(text,0,text.length),elEndStart)}return elStartEnd+1}function fixSelfClosed(source,elStartEnd,tagName,closeMap){var pos=closeMap[tagName];return null==pos&&((pos=source.lastIndexOf("</"+tagName+">"))<elStartEnd&&(pos=source.lastIndexOf("</"+tagName)),closeMap[tagName]=pos),pos<elStartEnd}function _copy(source,target){for(var n in source)Object.prototype.hasOwnProperty.call(source,n)&&(target[n]=source[n])}function parseDCC(source,start,domBuilder,errorHandler){if("-"===source.charAt(start+2))return"-"===source.charAt(start+3)?(end=source.indexOf("--\x3e",start+4))>start?(domBuilder.comment(source,start+4,end-start-4),end+3):(errorHandler.error("Unclosed comment"),-1):-1;if("CDATA["==source.substr(start+3,6)){var end=source.indexOf("]]>",start+9);return domBuilder.startCDATA(),domBuilder.characters(source,start+9,end-start-9),domBuilder.endCDATA(),end+3}var matchs=function(source,start){var match,buf=[],reg=/'[^']+'|"[^"]+"|[^\s<>\/=]+=?|(\/?\s*>|<)/g;reg.lastIndex=start,reg.exec(source);for(;match=reg.exec(source);)if(buf.push(match),match[1])return buf}(source,start),len=matchs.length;if(len>1&&/!doctype/i.test(matchs[0][0])){var name=matchs[1][0],pubid=!1,sysid=!1;len>3&&(/^public$/i.test(matchs[2][0])?(pubid=matchs[3][0],sysid=len>4&&matchs[4][0]):/^system$/i.test(matchs[2][0])&&(sysid=matchs[3][0]));var lastMatch=matchs[len-1];return domBuilder.startDTD(name,pubid,sysid),domBuilder.endDTD(),lastMatch.index+lastMatch[0].length}return-1}function parseInstruction(source,start,domBuilder){var end=source.indexOf("?>",start);if(end){var match=source.substring(start,end).match(/^<\?(\S*)\s*([\s\S]*?)\s*$/);return match?(match[0].length,domBuilder.processingInstruction(match[1],match[2]),end+2):-1}return-1}function ElementAttributes(){this.attributeNames={}}ParseError$1.prototype=new Error,ParseError$1.prototype.name=ParseError$1.name,XMLReader$1.prototype={parse:function(source,defaultNSMap,entityMap){var domBuilder=this.domBuilder;domBuilder.startDocument(),_copy(defaultNSMap,defaultNSMap={}),function(source,defaultNSMapCopy,entityMap,domBuilder,errorHandler){function fixedFromCharCode(code){if(code>65535){var surrogate1=55296+((code-=65536)>>10),surrogate2=56320+(1023&code);return String.fromCharCode(surrogate1,surrogate2)}return String.fromCharCode(code)}function entityReplacer(a){var k=a.slice(1,-1);return Object.hasOwnProperty.call(entityMap,k)?entityMap[k]:"#"===k.charAt(0)?fixedFromCharCode(parseInt(k.substr(1).replace("x","0x"))):(errorHandler.error("entity not found:"+a),a)}function appendText(end){if(end>start){var xt=source.substring(start,end).replace(/&#?\w+;/g,entityReplacer);locator&&position(start),domBuilder.characters(xt,0,end-start),start=end}}function position(p,m){for(;p>=lineEnd&&(m=linePattern.exec(source));)lineStart=m.index,lineEnd=lineStart+m[0].length,locator.lineNumber++;locator.columnNumber=p-lineStart+1}var lineStart=0,lineEnd=0,linePattern=/.*(?:\r\n?|\n)|.*$/g,locator=domBuilder.locator,parseStack=[{currentNSMap:defaultNSMapCopy}],closeMap={},start=0;for(;;){try{var tagStart=source.indexOf("<",start);if(tagStart<0){if(!source.substr(start).match(/^\s*$/)){var doc=domBuilder.doc,text=doc.createTextNode(source.substr(start));doc.appendChild(text),domBuilder.currentElement=text}return}switch(tagStart>start&&appendText(tagStart),source.charAt(tagStart+1)){case"/":var end=source.indexOf(">",tagStart+3),tagName=source.substring(tagStart+2,end).replace(/[ \t\n\r]+$/g,""),config=parseStack.pop();end<0?(tagName=source.substring(tagStart+2).replace(/[\s<].*/,""),errorHandler.error("end tag name: "+tagName+" is not complete:"+config.tagName),end=tagStart+1+tagName.length):tagName.match(/\s</)&&(tagName=tagName.replace(/[\s<].*/,""),errorHandler.error("end tag name: "+tagName+" maybe not complete"),end=tagStart+1+tagName.length);var localNSMap=config.localNSMap,endMatch=config.tagName==tagName;if(endMatch||config.tagName&&config.tagName.toLowerCase()==tagName.toLowerCase()){if(domBuilder.endElement(config.uri,config.localName,tagName),localNSMap)for(var prefix in localNSMap)Object.prototype.hasOwnProperty.call(localNSMap,prefix)&&domBuilder.endPrefixMapping(prefix);endMatch||errorHandler.fatalError("end tag name: "+tagName+" is not match the current start tagName:"+config.tagName)}else parseStack.push(config);end++;break;case"?":locator&&position(tagStart),end=parseInstruction(source,tagStart,domBuilder);break;case"!":locator&&position(tagStart),end=parseDCC(source,tagStart,domBuilder,errorHandler);break;default:locator&&position(tagStart);var el=new ElementAttributes,currentNSMap=parseStack[parseStack.length-1].currentNSMap,len=(end=parseElementStartPart(source,tagStart,el,currentNSMap,entityReplacer,errorHandler),el.length);if(!el.closed&&fixSelfClosed(source,end,el.tagName,closeMap)&&(el.closed=!0,entityMap.nbsp||errorHandler.warning("unclosed xml attribute")),locator&&len){for(var locator2=copyLocator(locator,{}),i=0;i<len;i++){var a=el[i];position(a.offset),a.locator=copyLocator(locator,{})}domBuilder.locator=locator2,appendElement$1(el,domBuilder,currentNSMap)&&parseStack.push(el),domBuilder.locator=locator}else appendElement$1(el,domBuilder,currentNSMap)&&parseStack.push(el);NAMESPACE$1.isHTML(el.uri)&&!el.closed?end=parseHtmlSpecialContent(source,end,el.tagName,entityReplacer,domBuilder):end++}}catch(e){if(e instanceof ParseError$1)throw e;errorHandler.error("element parse error: "+e),end=-1}end>start?start=end:appendText(Math.max(tagStart,start)+1)}}(source,defaultNSMap,entityMap,domBuilder,this.errorHandler),domBuilder.endDocument()}},ElementAttributes.prototype={setTagName:function(tagName){if(!tagNamePattern.test(tagName))throw new Error("invalid tagName:"+tagName);this.tagName=tagName},addValue:function(qName,value,offset){if(!tagNamePattern.test(qName))throw new Error("invalid attribute:"+qName);this.attributeNames[qName]=this.length,this[this.length++]={qName:qName,value:value,offset:offset}},length:0,getLocalName:function(i){return this[i].localName},getLocator:function(i){return this[i].locator},getQName:function(i){return this[i].qName},getURI:function(i){return this[i].uri},getValue:function(i){return this[i].value}};var sax={XMLReader:XMLReader$1,ParseError:ParseError$1},DOMImplementation=dom.DOMImplementation,NAMESPACE=conventions.NAMESPACE,ParseError=sax.ParseError,XMLReader=sax.XMLReader;function normalizeLineEndings(input){return input.replace(/\r[\n\u0085]/g,"\n").replace(/[\r\u0085\u2028]/g,"\n")}function DOMParser$1(options){this.options=options||{locator:{}}}function DOMHandler(){this.cdata=!1}function position(locator,node){node.lineNumber=locator.lineNumber,node.columnNumber=locator.columnNumber}function _locator(l){if(l)return"\n@"+(l.systemId||"")+"#[line:"+l.lineNumber+",col:"+l.columnNumber+"]"}function _toString(chars,start,length){return"string"==typeof chars?chars.substr(start,length):chars.length>=start+length||start?new java.lang.String(chars,start,length)+"":chars}function appendElement(hander,node){hander.currentElement?hander.currentElement.appendChild(node):hander.doc.appendChild(node)}DOMParser$1.prototype.parseFromString=function(source,mimeType){var options=this.options,sax=new XMLReader,domBuilder=options.domBuilder||new DOMHandler,errorHandler=options.errorHandler,locator=options.locator,defaultNSMap=options.xmlns||{},isHTML=/\/x?html?$/.test(mimeType),entityMap=isHTML?entities.HTML_ENTITIES:entities.XML_ENTITIES;locator&&domBuilder.setDocumentLocator(locator),sax.errorHandler=function(errorImpl,domBuilder,locator){if(!errorImpl){if(domBuilder instanceof DOMHandler)return domBuilder;errorImpl=domBuilder}var errorHandler={},isCallback=errorImpl instanceof Function;function build(key){var fn=errorImpl[key];!fn&&isCallback&&(fn=2==errorImpl.length?function(msg){errorImpl(key,msg)}:errorImpl),errorHandler[key]=fn&&function(msg){fn("[xmldom "+key+"]\t"+msg+_locator(locator))}||function(){}}return locator=locator||{},build("warning"),build("error"),build("fatalError"),errorHandler}(errorHandler,domBuilder,locator),sax.domBuilder=options.domBuilder||domBuilder,isHTML&&(defaultNSMap[""]=NAMESPACE.HTML),defaultNSMap.xml=defaultNSMap.xml||NAMESPACE.XML;var normalize=options.normalizeLineEndings||normalizeLineEndings;return source&&"string"==typeof source?sax.parse(normalize(source),defaultNSMap,entityMap):sax.errorHandler.error("invalid doc source"),domBuilder.doc},DOMHandler.prototype={startDocument:function(){this.doc=(new DOMImplementation).createDocument(null,null,null),this.locator&&(this.doc.documentURI=this.locator.systemId)},startElement:function(namespaceURI,localName,qName,attrs){var doc=this.doc,el=doc.createElementNS(namespaceURI,qName||localName),len=attrs.length;appendElement(this,el),this.currentElement=el,this.locator&&position(this.locator,el);for(var i=0;i<len;i++){namespaceURI=attrs.getURI(i);var value=attrs.getValue(i),attr=(qName=attrs.getQName(i),doc.createAttributeNS(namespaceURI,qName));this.locator&&position(attrs.getLocator(i),attr),attr.value=attr.nodeValue=value,el.setAttributeNode(attr)}},endElement:function(namespaceURI,localName,qName){var current=this.currentElement;current.tagName,this.currentElement=current.parentNode},startPrefixMapping:function(prefix,uri){},endPrefixMapping:function(prefix){},processingInstruction:function(target,data){var ins=this.doc.createProcessingInstruction(target,data);this.locator&&position(this.locator,ins),appendElement(this,ins)},ignorableWhitespace:function(ch,start,length){},characters:function(chars,start,length){if(chars=_toString.apply(this,arguments)){if(this.cdata)var charNode=this.doc.createCDATASection(chars);else charNode=this.doc.createTextNode(chars);this.currentElement?this.currentElement.appendChild(charNode):/^\s*$/.test(chars)&&this.doc.appendChild(charNode),this.locator&&position(this.locator,charNode)}},skippedEntity:function(name){},endDocument:function(){this.doc.normalize()},setDocumentLocator:function(locator){(this.locator=locator)&&(locator.lineNumber=0)},comment:function(chars,start,length){chars=_toString.apply(this,arguments);var comm=this.doc.createComment(chars);this.locator&&position(this.locator,comm),appendElement(this,comm)},startCDATA:function(){this.cdata=!0},endCDATA:function(){this.cdata=!1},startDTD:function(name,publicId,systemId){var impl=this.doc.implementation;if(impl&&impl.createDocumentType){var dt=impl.createDocumentType(name,publicId,systemId);this.locator&&position(this.locator,dt),appendElement(this,dt),this.doc.doctype=dt}},warning:function(error){console.warn("[xmldom warning]\t"+error,_locator(this.locator))},error:function(error){console.error("[xmldom error]\t"+error,_locator(this.locator))},fatalError:function(error){throw new ParseError(error,this.locator)}},"endDTD,startEntity,endEntity,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,resolveEntity,getExternalSubset,notationDecl,unparsedEntityDecl".replace(/\w+/g,(function(key){DOMHandler.prototype[key]=function(){return null}}));var DOMParser={__DOMHandler:DOMHandler,normalizeLineEndings:normalizeLineEndings,DOMParser:DOMParser$1}.DOMParser;
-/*! @name mpd-parser @version 1.0.1 @license Apache-2.0 */
-const isObject=obj=>!!obj&&"object"==typeof obj,merge$1=function(){for(var _len23=arguments.length,objects=new Array(_len23),_key23=0;_key23<_len23;_key23++)objects[_key23]=arguments[_key23];return objects.reduce(((result,source)=>("object"!=typeof source||Object.keys(source).forEach((key=>{Array.isArray(result[key])&&Array.isArray(source[key])?result[key]=result[key].concat(source[key]):isObject(result[key])&&isObject(source[key])?result[key]=merge$1(result[key],source[key]):result[key]=source[key]})),result)),{})},values=o=>Object.keys(o).map((k=>o[k])),flatten=lists=>lists.reduce(((x,y)=>x.concat(y)),[]),from=list=>{if(!list.length)return[];const result=[];for(let i=0;i<list.length;i++)result.push(list[i]);return result};var errors_INVALID_NUMBER_OF_PERIOD="INVALID_NUMBER_OF_PERIOD",errors_DASH_EMPTY_MANIFEST="DASH_EMPTY_MANIFEST",errors_DASH_INVALID_XML="DASH_INVALID_XML",errors_NO_BASE_URL="NO_BASE_URL",errors_SEGMENT_TIME_UNSPECIFIED="SEGMENT_TIME_UNSPECIFIED",errors_UNSUPPORTED_UTC_TIMING_SCHEME="UNSUPPORTED_UTC_TIMING_SCHEME";const urlTypeToSegment=_ref10=>{let{baseUrl:baseUrl="",source:source="",range:range="",indexRange:indexRange=""}=_ref10;const segment={uri:source,resolvedUri:resolveUrl$1(baseUrl||"",source)};if(range||indexRange){const ranges=(range||indexRange).split("-");let length,startRange=window.BigInt?window.BigInt(ranges[0]):parseInt(ranges[0],10),endRange=window.BigInt?window.BigInt(ranges[1]):parseInt(ranges[1],10);startRange<Number.MAX_SAFE_INTEGER&&"bigint"==typeof startRange&&(startRange=Number(startRange)),endRange<Number.MAX_SAFE_INTEGER&&"bigint"==typeof endRange&&(endRange=Number(endRange)),length="bigint"==typeof endRange||"bigint"==typeof startRange?window.BigInt(endRange)-window.BigInt(startRange)+window.BigInt(1):endRange-startRange+1,"bigint"==typeof length&&length<Number.MAX_SAFE_INTEGER&&(length=Number(length)),segment.byterange={length:length,offset:startRange}}return segment},parseEndNumber=endNumber=>(endNumber&&"number"!=typeof endNumber&&(endNumber=parseInt(endNumber,10)),isNaN(endNumber)?null:endNumber),segmentRange={static(attributes){const{duration:duration,timescale:timescale=1,sourceDuration:sourceDuration,periodDuration:periodDuration}=attributes,endNumber=parseEndNumber(attributes.endNumber),segmentDuration=duration/timescale;return"number"==typeof endNumber?{start:0,end:endNumber}:"number"==typeof periodDuration?{start:0,end:periodDuration/segmentDuration}:{start:0,end:sourceDuration/segmentDuration}},dynamic(attributes){const{NOW:NOW,clientOffset:clientOffset,availabilityStartTime:availabilityStartTime,timescale:timescale=1,duration:duration,periodStart:periodStart=0,minimumUpdatePeriod:minimumUpdatePeriod=0,timeShiftBufferDepth:timeShiftBufferDepth=1/0}=attributes,endNumber=parseEndNumber(attributes.endNumber),now=(NOW+clientOffset)/1e3,periodStartWC=availabilityStartTime+periodStart,periodDuration=now+minimumUpdatePeriod-periodStartWC,segmentCount=Math.ceil(periodDuration*timescale/duration),availableStart=Math.floor((now-periodStartWC-timeShiftBufferDepth)*timescale/duration),availableEnd=Math.floor((now-periodStartWC)*timescale/duration);return{start:Math.max(0,availableStart),end:"number"==typeof endNumber?endNumber:Math.min(segmentCount,availableEnd)}}},parseByDuration=attributes=>{const{type:type,duration:duration,timescale:timescale=1,periodDuration:periodDuration,sourceDuration:sourceDuration}=attributes,{start:start,end:end}=segmentRange[type](attributes),segments=((start,end)=>{const result=[];for(let i=start;i<end;i++)result.push(i);return result})(start,end).map((attributes=>number=>{const{duration:duration,timescale:timescale=1,periodStart:periodStart,startNumber:startNumber=1}=attributes;return{number:startNumber+number,duration:duration/timescale,timeline:periodStart,time:number*duration}})(attributes));if("static"===type){const index=segments.length-1,sectionDuration="number"==typeof periodDuration?periodDuration:sourceDuration;segments[index].duration=sectionDuration-duration/timescale*index}return segments},segmentsFromBase=attributes=>{const{baseUrl:baseUrl,initialization:initialization={},sourceDuration:sourceDuration,indexRange:indexRange="",periodStart:periodStart,presentationTime:presentationTime,number:number=0,duration:duration}=attributes;if(!baseUrl)throw new Error(errors_NO_BASE_URL);const initSegment=urlTypeToSegment({baseUrl:baseUrl,source:initialization.sourceURL,range:initialization.range}),segment=urlTypeToSegment({baseUrl:baseUrl,source:baseUrl,indexRange:indexRange});if(segment.map=initSegment,duration){const segmentTimeInfo=parseByDuration(attributes);segmentTimeInfo.length&&(segment.duration=segmentTimeInfo[0].duration,segment.timeline=segmentTimeInfo[0].timeline)}else sourceDuration&&(segment.duration=sourceDuration,segment.timeline=periodStart);return segment.presentationTime=presentationTime||periodStart,segment.number=number,[segment]},addSidxSegmentsToPlaylist$1=(playlist,sidx,baseUrl)=>{const initSegment=playlist.sidx.map?playlist.sidx.map:null,sourceDuration=playlist.sidx.duration,timeline=playlist.timeline||0,sidxByteRange=playlist.sidx.byterange,sidxEnd=sidxByteRange.offset+sidxByteRange.length,timescale=sidx.timescale,mediaReferences=sidx.references.filter((r=>1!==r.referenceType)),segments=[],type=playlist.endList?"static":"dynamic",periodStart=playlist.sidx.timeline;let startIndex,presentationTime=periodStart,number=playlist.mediaSequence||0;startIndex="bigint"==typeof sidx.firstOffset?window.BigInt(sidxEnd)+sidx.firstOffset:sidxEnd+sidx.firstOffset;for(let i=0;i<mediaReferences.length;i++){const reference=sidx.references[i],size=reference.referencedSize,duration=reference.subsegmentDuration;let endIndex;endIndex="bigint"==typeof startIndex?startIndex+window.BigInt(size)-window.BigInt(1):startIndex+size-1;const indexRange="".concat(startIndex,"-").concat(endIndex),segment=segmentsFromBase({baseUrl:baseUrl,timescale:timescale,timeline:timeline,periodStart:periodStart,presentationTime:presentationTime,number:number,duration:duration,sourceDuration:sourceDuration,indexRange:indexRange,type:type})[0];initSegment&&(segment.map=initSegment),segments.push(segment),startIndex+="bigint"==typeof startIndex?window.BigInt(size):size,presentationTime+=duration/timescale,number++}return playlist.segments=segments,playlist},SUPPORTED_MEDIA_TYPES=["AUDIO","SUBTITLES"],getUniqueTimelineStarts=timelineStarts=>{return(lists=timelineStarts,keyFunction=_ref11=>{let{timeline:timeline}=_ref11;return timeline},values(lists.reduce(((acc,list)=>(list.forEach((el=>{acc[keyFunction(el)]=el})),acc)),{}))).sort(((a,b)=>a.timeline>b.timeline?1:-1));var lists,keyFunction},getMediaGroupPlaylists=manifest=>{let mediaGroupPlaylists=[];var master,callback;return master=manifest,callback=(properties,type,group,label)=>{mediaGroupPlaylists=mediaGroupPlaylists.concat(properties.playlists||[])},SUPPORTED_MEDIA_TYPES.forEach((function(mediaType){for(var groupKey in master.mediaGroups[mediaType])for(var labelKey in master.mediaGroups[mediaType][groupKey]){var mediaProperties=master.mediaGroups[mediaType][groupKey][labelKey];callback(mediaProperties,mediaType,groupKey,labelKey)}})),mediaGroupPlaylists},updateMediaSequenceForPlaylist=_ref12=>{let{playlist:playlist,mediaSequence:mediaSequence}=_ref12;playlist.mediaSequence=mediaSequence,playlist.segments.forEach(((segment,index)=>{segment.number=playlist.mediaSequence+index}))},positionManifestOnTimeline=_ref15=>{let{oldManifest:oldManifest,newManifest:newManifest}=_ref15;const oldPlaylists=oldManifest.playlists.concat(getMediaGroupPlaylists(oldManifest)),newPlaylists=newManifest.playlists.concat(getMediaGroupPlaylists(newManifest));return newManifest.timelineStarts=getUniqueTimelineStarts([oldManifest.timelineStarts,newManifest.timelineStarts]),(_ref13=>{let{oldPlaylists:oldPlaylists,newPlaylists:newPlaylists,timelineStarts:timelineStarts}=_ref13;newPlaylists.forEach((playlist=>{playlist.discontinuitySequence=timelineStarts.findIndex((function(_ref14){let{timeline:timeline}=_ref14;return timeline===playlist.timeline}));const oldPlaylist=((playlists,name)=>{for(let i=0;i<playlists.length;i++)if(playlists[i].attributes.NAME===name)return playlists[i];return null})(oldPlaylists,playlist.attributes.NAME);if(!oldPlaylist)return;if(playlist.sidx)return;const firstNewSegment=playlist.segments[0],oldMatchingSegmentIndex=oldPlaylist.segments.findIndex((function(oldSegment){return Math.abs(oldSegment.presentationTime-firstNewSegment.presentationTime)<.016666666666666666}));if(-1===oldMatchingSegmentIndex)return updateMediaSequenceForPlaylist({playlist:playlist,mediaSequence:oldPlaylist.mediaSequence+oldPlaylist.segments.length}),playlist.segments[0].discontinuity=!0,playlist.discontinuityStarts.unshift(0),void((!oldPlaylist.segments.length&&playlist.timeline>oldPlaylist.timeline||oldPlaylist.segments.length&&playlist.timeline>oldPlaylist.segments[oldPlaylist.segments.length-1].timeline)&&playlist.discontinuitySequence--);oldPlaylist.segments[oldMatchingSegmentIndex].discontinuity&&!firstNewSegment.discontinuity&&(firstNewSegment.discontinuity=!0,playlist.discontinuityStarts.unshift(0),playlist.discontinuitySequence--),updateMediaSequenceForPlaylist({playlist:playlist,mediaSequence:oldPlaylist.segments[oldMatchingSegmentIndex].number})}))})({oldPlaylists:oldPlaylists,newPlaylists:newPlaylists,timelineStarts:newManifest.timelineStarts}),newManifest},generateSidxKey=sidx=>sidx&&sidx.uri+"-"+(byterange=>{let endRange;return endRange="bigint"==typeof byterange.offset||"bigint"==typeof byterange.length?window.BigInt(byterange.offset)+window.BigInt(byterange.length)-window.BigInt(1):byterange.offset+byterange.length-1,"".concat(byterange.offset,"-").concat(endRange)})(sidx.byterange),mergeDiscontiguousPlaylists=playlists=>values(playlists.reduce(((acc,playlist)=>{const name=playlist.attributes.id+(playlist.attributes.lang||"");return acc[name]?(playlist.segments&&(playlist.segments[0]&&(playlist.segments[0].discontinuity=!0),acc[name].segments.push(...playlist.segments)),playlist.attributes.contentProtection&&(acc[name].attributes.contentProtection=playlist.attributes.contentProtection)):(acc[name]=playlist,acc[name].attributes.timelineStarts=[]),acc[name].attributes.timelineStarts.push({start:playlist.attributes.periodStart,timeline:playlist.attributes.periodStart}),acc}),{})).map((playlist=>{var l,key;return playlist.discontinuityStarts=(l=playlist.segments||[],key="discontinuity",l.reduce(((a,e,i)=>(e[key]&&a.push(i),a)),[])),playlist})),addSidxSegmentsToPlaylist=(playlist,sidxMapping)=>{const sidxKey=generateSidxKey(playlist.sidx),sidxMatch=sidxKey&&sidxMapping[sidxKey]&&sidxMapping[sidxKey].sidx;return sidxMatch&&addSidxSegmentsToPlaylist$1(playlist,sidxMatch,playlist.sidx.resolvedUri),playlist},addSidxSegmentsToPlaylists=function(playlists){let sidxMapping=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};if(!Object.keys(sidxMapping).length)return playlists;for(const i in playlists)playlists[i]=addSidxSegmentsToPlaylist(playlists[i],sidxMapping);return playlists},formatAudioPlaylist=(_ref16,isAudioOnly)=>{let{attributes:attributes,segments:segments,sidx:sidx,mediaSequence:mediaSequence,discontinuitySequence:discontinuitySequence,discontinuityStarts:discontinuityStarts}=_ref16;const playlist={attributes:{NAME:attributes.id,BANDWIDTH:attributes.bandwidth,CODECS:attributes.codecs,"PROGRAM-ID":1},uri:"",endList:"static"===attributes.type,timeline:attributes.periodStart,resolvedUri:"",targetDuration:attributes.duration,discontinuitySequence:discontinuitySequence,discontinuityStarts:discontinuityStarts,timelineStarts:attributes.timelineStarts,mediaSequence:mediaSequence,segments:segments};return attributes.contentProtection&&(playlist.contentProtection=attributes.contentProtection),sidx&&(playlist.sidx=sidx),isAudioOnly&&(playlist.attributes.AUDIO="audio",playlist.attributes.SUBTITLES="subs"),playlist},formatVttPlaylist=_ref17=>{let{attributes:attributes,segments:segments,mediaSequence:mediaSequence,discontinuityStarts:discontinuityStarts,discontinuitySequence:discontinuitySequence}=_ref17;void 0===segments&&(segments=[{uri:attributes.baseUrl,timeline:attributes.periodStart,resolvedUri:attributes.baseUrl||"",duration:attributes.sourceDuration,number:0}],attributes.duration=attributes.sourceDuration);const m3u8Attributes={NAME:attributes.id,BANDWIDTH:attributes.bandwidth,"PROGRAM-ID":1};return attributes.codecs&&(m3u8Attributes.CODECS=attributes.codecs),{attributes:m3u8Attributes,uri:"",endList:"static"===attributes.type,timeline:attributes.periodStart,resolvedUri:attributes.baseUrl||"",targetDuration:attributes.duration,timelineStarts:attributes.timelineStarts,discontinuityStarts:discontinuityStarts,discontinuitySequence:discontinuitySequence,mediaSequence:mediaSequence,segments:segments}},formatVideoPlaylist=_ref18=>{let{attributes:attributes,segments:segments,sidx:sidx,discontinuityStarts:discontinuityStarts}=_ref18;const playlist={attributes:{NAME:attributes.id,AUDIO:"audio",SUBTITLES:"subs",RESOLUTION:{width:attributes.width,height:attributes.height},CODECS:attributes.codecs,BANDWIDTH:attributes.bandwidth,"PROGRAM-ID":1},uri:"",endList:"static"===attributes.type,timeline:attributes.periodStart,resolvedUri:"",targetDuration:attributes.duration,discontinuityStarts:discontinuityStarts,timelineStarts:attributes.timelineStarts,segments:segments};return attributes.frameRate&&(playlist.attributes["FRAME-RATE"]=attributes.frameRate),attributes.contentProtection&&(playlist.contentProtection=attributes.contentProtection),sidx&&(playlist.sidx=sidx),playlist},videoOnly=_ref19=>{let{attributes:attributes}=_ref19;return"video/mp4"===attributes.mimeType||"video/webm"===attributes.mimeType||"video"===attributes.contentType},audioOnly=_ref20=>{let{attributes:attributes}=_ref20;return"audio/mp4"===attributes.mimeType||"audio/webm"===attributes.mimeType||"audio"===attributes.contentType},vttOnly=_ref21=>{let{attributes:attributes}=_ref21;return"text/vtt"===attributes.mimeType||"text"===attributes.contentType},flattenMediaGroupPlaylists=mediaGroupObject=>mediaGroupObject?Object.keys(mediaGroupObject).reduce(((acc,label)=>{const labelContents=mediaGroupObject[label];return acc.concat(labelContents.playlists)}),[]):[],toM3u8=_ref23=>{let{dashPlaylists:dashPlaylists,locations:locations,sidxMapping:sidxMapping={},previousManifest:previousManifest}=_ref23;if(!dashPlaylists.length)return{};const{sourceDuration:duration,type:type,suggestedPresentationDelay:suggestedPresentationDelay,minimumUpdatePeriod:minimumUpdatePeriod}=dashPlaylists[0].attributes,videoPlaylists=mergeDiscontiguousPlaylists(dashPlaylists.filter(videoOnly)).map(formatVideoPlaylist),audioPlaylists=mergeDiscontiguousPlaylists(dashPlaylists.filter(audioOnly)),vttPlaylists=mergeDiscontiguousPlaylists(dashPlaylists.filter(vttOnly)),captions=dashPlaylists.map((playlist=>playlist.attributes.captionServices)).filter(Boolean),manifest={allowCache:!0,discontinuityStarts:[],segments:[],endList:!0,mediaGroups:{AUDIO:{},VIDEO:{},"CLOSED-CAPTIONS":{},SUBTITLES:{}},uri:"",duration:duration,playlists:addSidxSegmentsToPlaylists(videoPlaylists,sidxMapping)};minimumUpdatePeriod>=0&&(manifest.minimumUpdatePeriod=1e3*minimumUpdatePeriod),locations&&(manifest.locations=locations),"dynamic"===type&&(manifest.suggestedPresentationDelay=suggestedPresentationDelay);const isAudioOnly=0===manifest.playlists.length,organizedAudioGroup=audioPlaylists.length?function(playlists){let mainPlaylist,sidxMapping=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},isAudioOnly=arguments.length>2&&void 0!==arguments[2]&&arguments[2];const formattedPlaylists=playlists.reduce(((a,playlist)=>{const role=playlist.attributes.role&&playlist.attributes.role.value||"",language=playlist.attributes.lang||"";let label=playlist.attributes.label||"main";if(language&&!playlist.attributes.label){const roleLabel=role?" (".concat(role,")"):"";label="".concat(playlist.attributes.lang).concat(roleLabel)}a[label]||(a[label]={language:language,autoselect:!0,default:"main"===role,playlists:[],uri:""});const formatted=addSidxSegmentsToPlaylist(formatAudioPlaylist(playlist,isAudioOnly),sidxMapping);return a[label].playlists.push(formatted),void 0===mainPlaylist&&"main"===role&&(mainPlaylist=playlist,mainPlaylist.default=!0),a}),{});mainPlaylist||(formattedPlaylists[Object.keys(formattedPlaylists)[0]].default=!0);return formattedPlaylists}(audioPlaylists,sidxMapping,isAudioOnly):null,organizedVttGroup=vttPlaylists.length?function(playlists){let sidxMapping=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};return playlists.reduce(((a,playlist)=>{const label=playlist.attributes.lang||"text";return a[label]||(a[label]={language:label,default:!1,autoselect:!1,playlists:[],uri:""}),a[label].playlists.push(addSidxSegmentsToPlaylist(formatVttPlaylist(playlist),sidxMapping)),a}),{})}(vttPlaylists,sidxMapping):null,formattedPlaylists=videoPlaylists.concat(flattenMediaGroupPlaylists(organizedAudioGroup),flattenMediaGroupPlaylists(organizedVttGroup)),playlistTimelineStarts=formattedPlaylists.map((_ref24=>{let{timelineStarts:timelineStarts}=_ref24;return timelineStarts}));var playlists,timelineStarts;return manifest.timelineStarts=getUniqueTimelineStarts(playlistTimelineStarts),playlists=formattedPlaylists,timelineStarts=manifest.timelineStarts,playlists.forEach((playlist=>{playlist.mediaSequence=0,playlist.discontinuitySequence=timelineStarts.findIndex((function(_ref22){let{timeline:timeline}=_ref22;return timeline===playlist.timeline})),playlist.segments&&playlist.segments.forEach(((segment,index)=>{segment.number=index}))})),organizedAudioGroup&&(manifest.mediaGroups.AUDIO.audio=organizedAudioGroup),organizedVttGroup&&(manifest.mediaGroups.SUBTITLES.subs=organizedVttGroup),captions.length&&(manifest.mediaGroups["CLOSED-CAPTIONS"].cc=captions.reduce(((svcObj,svc)=>svc?(svc.forEach((service=>{const{channel:channel,language:language}=service;svcObj[language]={autoselect:!1,default:!1,instreamId:channel,language:language},service.hasOwnProperty("aspectRatio")&&(svcObj[language].aspectRatio=service.aspectRatio),service.hasOwnProperty("easyReader")&&(svcObj[language].easyReader=service.easyReader),service.hasOwnProperty("3D")&&(svcObj[language]["3D"]=service["3D"])})),svcObj):svcObj),{})),previousManifest?positionManifestOnTimeline({oldManifest:previousManifest,newManifest:manifest}):manifest},getLiveRValue=(attributes,time,duration)=>{const{NOW:NOW,clientOffset:clientOffset,availabilityStartTime:availabilityStartTime,timescale:timescale=1,periodStart:periodStart=0,minimumUpdatePeriod:minimumUpdatePeriod=0}=attributes,periodDuration=(NOW+clientOffset)/1e3+minimumUpdatePeriod-(availabilityStartTime+periodStart);return Math.ceil((periodDuration*timescale-time)/duration)},parseByTimeline=(attributes,segmentTimeline)=>{const{type:type,minimumUpdatePeriod:minimumUpdatePeriod=0,media:media="",sourceDuration:sourceDuration,timescale:timescale=1,startNumber:startNumber=1,periodStart:timeline}=attributes,segments=[];let time=-1;for(let sIndex=0;sIndex<segmentTimeline.length;sIndex++){const S=segmentTimeline[sIndex],duration=S.d,repeat=S.r||0,segmentTime=S.t||0;let count;if(time<0&&(time=segmentTime),segmentTime&&segmentTime>time&&(time=segmentTime),repeat<0){const nextS=sIndex+1;count=nextS===segmentTimeline.length?"dynamic"===type&&minimumUpdatePeriod>0&&media.indexOf("$Number$")>0?getLiveRValue(attributes,time,duration):(sourceDuration*timescale-time)/duration:(segmentTimeline[nextS].t-time)/duration}else count=repeat+1;const end=startNumber+segments.length+count;let number=startNumber+segments.length;for(;number<end;)segments.push({number:number,duration:duration/timescale,time:time,timeline:timeline}),time+=duration,number++}return segments},identifierPattern=/\$([A-z]*)(?:(%0)([0-9]+)d)?\$/g,constructTemplateUrl=(url,values)=>url.replace(identifierPattern,(values=>(match,identifier,format,width)=>{if("$$"===match)return"$";if(void 0===values[identifier])return match;const value=""+values[identifier];return"RepresentationID"===identifier?value:(width=format?parseInt(width,10):1,value.length>=width?value:"".concat(new Array(width-value.length+1).join("0")).concat(value))})(values)),segmentsFromTemplate=(attributes,segmentTimeline)=>{const templateValues={RepresentationID:attributes.id,Bandwidth:attributes.bandwidth||0},{initialization:initialization={sourceURL:"",range:""}}=attributes,mapSegment=urlTypeToSegment({baseUrl:attributes.baseUrl,source:constructTemplateUrl(initialization.sourceURL,templateValues),range:initialization.range}),segments=((attributes,segmentTimeline)=>attributes.duration||segmentTimeline?attributes.duration?parseByDuration(attributes):parseByTimeline(attributes,segmentTimeline):[{number:attributes.startNumber||1,duration:attributes.sourceDuration,time:0,timeline:attributes.periodStart}])(attributes,segmentTimeline);return segments.map((segment=>{templateValues.Number=segment.number,templateValues.Time=segment.time;const uri=constructTemplateUrl(attributes.media||"",templateValues),timescale=attributes.timescale||1,presentationTimeOffset=attributes.presentationTimeOffset||0,presentationTime=attributes.periodStart+(segment.time-presentationTimeOffset)/timescale;return{uri:uri,timeline:segment.timeline,duration:segment.duration,resolvedUri:resolveUrl$1(attributes.baseUrl||"",uri),map:mapSegment,number:segment.number,presentationTime:presentationTime}}))},segmentsFromList=(attributes,segmentTimeline)=>{const{duration:duration,segmentUrls:segmentUrls=[],periodStart:periodStart}=attributes;if(!duration&&!segmentTimeline||duration&&segmentTimeline)throw new Error(errors_SEGMENT_TIME_UNSPECIFIED);const segmentUrlMap=segmentUrls.map((segmentUrlObject=>((attributes,segmentUrl)=>{const{baseUrl:baseUrl,initialization:initialization={}}=attributes,initSegment=urlTypeToSegment({baseUrl:baseUrl,source:initialization.sourceURL,range:initialization.range}),segment=urlTypeToSegment({baseUrl:baseUrl,source:segmentUrl.media,range:segmentUrl.mediaRange});return segment.map=initSegment,segment})(attributes,segmentUrlObject)));let segmentTimeInfo;duration&&(segmentTimeInfo=parseByDuration(attributes)),segmentTimeline&&(segmentTimeInfo=parseByTimeline(attributes,segmentTimeline));return segmentTimeInfo.map(((segmentTime,index)=>{if(segmentUrlMap[index]){const segment=segmentUrlMap[index],timescale=attributes.timescale||1,presentationTimeOffset=attributes.presentationTimeOffset||0;return segment.timeline=segmentTime.timeline,segment.duration=segmentTime.duration,segment.number=segmentTime.number,segment.presentationTime=periodStart+(segmentTime.time-presentationTimeOffset)/timescale,segment}})).filter((segment=>segment))},generateSegments=_ref25=>{let segmentAttributes,segmentsFn,{attributes:attributes,segmentInfo:segmentInfo}=_ref25;segmentInfo.template?(segmentsFn=segmentsFromTemplate,segmentAttributes=merge$1(attributes,segmentInfo.template)):segmentInfo.base?(segmentsFn=segmentsFromBase,segmentAttributes=merge$1(attributes,segmentInfo.base)):segmentInfo.list&&(segmentsFn=segmentsFromList,segmentAttributes=merge$1(attributes,segmentInfo.list));const segmentsInfo={attributes:attributes};if(!segmentsFn)return segmentsInfo;const segments=segmentsFn(segmentAttributes,segmentInfo.segmentTimeline);if(segmentAttributes.duration){const{duration:duration,timescale:timescale=1}=segmentAttributes;segmentAttributes.duration=duration/timescale}else segments.length?segmentAttributes.duration=segments.reduce(((max,segment)=>Math.max(max,Math.ceil(segment.duration))),0):segmentAttributes.duration=0;return segmentsInfo.attributes=segmentAttributes,segmentsInfo.segments=segments,segmentInfo.base&&segmentAttributes.indexRange&&(segmentsInfo.sidx=segments[0],segmentsInfo.segments=[]),segmentsInfo},toPlaylists=representations=>representations.map(generateSegments),findChildren=(element,name)=>from(element.childNodes).filter((_ref26=>{let{tagName:tagName}=_ref26;return tagName===name})),getContent=element=>element.textContent.trim(),parseDuration=str=>{const match=/P(?:(\d*)Y)?(?:(\d*)M)?(?:(\d*)D)?(?:T(?:(\d*)H)?(?:(\d*)M)?(?:([\d.]*)S)?)?/.exec(str);if(!match)return 0;const[year,month,day,hour,minute,second]=match.slice(1);return 31536e3*parseFloat(year||0)+2592e3*parseFloat(month||0)+86400*parseFloat(day||0)+3600*parseFloat(hour||0)+60*parseFloat(minute||0)+parseFloat(second||0)},parsers={mediaPresentationDuration:value=>parseDuration(value),availabilityStartTime(value){return/^\d+-\d+-\d+T\d+:\d+:\d+(\.\d+)?$/.test(str=value)&&(str+="Z"),Date.parse(str)/1e3;var str},minimumUpdatePeriod:value=>parseDuration(value),suggestedPresentationDelay:value=>parseDuration(value),type:value=>value,timeShiftBufferDepth:value=>parseDuration(value),start:value=>parseDuration(value),width:value=>parseInt(value,10),height:value=>parseInt(value,10),bandwidth:value=>parseInt(value,10),frameRate:value=>(value=>parseFloat(value.split("/").reduce(((prev,current)=>prev/current))))(value),startNumber:value=>parseInt(value,10),timescale:value=>parseInt(value,10),presentationTimeOffset:value=>parseInt(value,10),duration(value){const parsedValue=parseInt(value,10);return isNaN(parsedValue)?parseDuration(value):parsedValue},d:value=>parseInt(value,10),t:value=>parseInt(value,10),r:value=>parseInt(value,10),DEFAULT:value=>value},parseAttributes=el=>el&&el.attributes?from(el.attributes).reduce(((a,e)=>{const parseFn=parsers[e.name]||parsers.DEFAULT;return a[e.name]=parseFn(e.value),a}),{}):{},keySystemsMap={"urn:uuid:1077efec-c0b2-4d02-ace3-3c1e52e2fb4b":"org.w3.clearkey","urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed":"com.widevine.alpha","urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95":"com.microsoft.playready","urn:uuid:f239e769-efa3-4850-9c16-a903c6932efb":"com.adobe.primetime"},buildBaseUrls=(referenceUrls,baseUrlElements)=>baseUrlElements.length?flatten(referenceUrls.map((function(reference){return baseUrlElements.map((function(baseUrlElement){return resolveUrl$1(reference,getContent(baseUrlElement))}))}))):referenceUrls,getSegmentInformation=adaptationSet=>{const segmentTemplate=findChildren(adaptationSet,"SegmentTemplate")[0],segmentList=findChildren(adaptationSet,"SegmentList")[0],segmentUrls=segmentList&&findChildren(segmentList,"SegmentURL").map((s=>merge$1({tag:"SegmentURL"},parseAttributes(s)))),segmentBase=findChildren(adaptationSet,"SegmentBase")[0],segmentTimelineParentNode=segmentList||segmentTemplate,segmentTimeline=segmentTimelineParentNode&&findChildren(segmentTimelineParentNode,"SegmentTimeline")[0],segmentInitializationParentNode=segmentList||segmentBase||segmentTemplate,segmentInitialization=segmentInitializationParentNode&&findChildren(segmentInitializationParentNode,"Initialization")[0],template=segmentTemplate&&parseAttributes(segmentTemplate);template&&segmentInitialization?template.initialization=segmentInitialization&&parseAttributes(segmentInitialization):template&&template.initialization&&(template.initialization={sourceURL:template.initialization});const segmentInfo={template:template,segmentTimeline:segmentTimeline&&findChildren(segmentTimeline,"S").map((s=>parseAttributes(s))),list:segmentList&&merge$1(parseAttributes(segmentList),{segmentUrls:segmentUrls,initialization:parseAttributes(segmentInitialization)}),base:segmentBase&&merge$1(parseAttributes(segmentBase),{initialization:parseAttributes(segmentInitialization)})};return Object.keys(segmentInfo).forEach((key=>{segmentInfo[key]||delete segmentInfo[key]})),segmentInfo},toRepresentations=(periodAttributes,periodBaseUrls,periodSegmentInfo)=>adaptationSet=>{const adaptationSetAttributes=parseAttributes(adaptationSet),adaptationSetBaseUrls=buildBaseUrls(periodBaseUrls,findChildren(adaptationSet,"BaseURL")),role=findChildren(adaptationSet,"Role")[0],roleAttributes={role:parseAttributes(role)};let attrs=merge$1(periodAttributes,adaptationSetAttributes,roleAttributes);const accessibility=findChildren(adaptationSet,"Accessibility")[0],captionServices=(service=>{if("urn:scte:dash:cc:cea-608:2015"===service.schemeIdUri)return("string"!=typeof service.value?[]:service.value.split(";")).map((value=>{let channel,language;return language=value,/^CC\d=/.test(value)?[channel,language]=value.split("="):/^CC\d$/.test(value)&&(channel=value),{channel:channel,language:language}}));if("urn:scte:dash:cc:cea-708:2015"===service.schemeIdUri)return("string"!=typeof service.value?[]:service.value.split(";")).map((value=>{const flags={channel:void 0,language:void 0,aspectRatio:1,easyReader:0,"3D":0};if(/=/.test(value)){const[channel,opts=""]=value.split("=");flags.channel=channel,flags.language=value,opts.split(",").forEach((opt=>{const[name,val]=opt.split(":");"lang"===name?flags.language=val:"er"===name?flags.easyReader=Number(val):"war"===name?flags.aspectRatio=Number(val):"3D"===name&&(flags["3D"]=Number(val))}))}else flags.language=value;return flags.channel&&(flags.channel="SERVICE"+flags.channel),flags}))})(parseAttributes(accessibility));captionServices&&(attrs=merge$1(attrs,{captionServices:captionServices}));const label=findChildren(adaptationSet,"Label")[0];if(label&&label.childNodes.length){const labelVal=label.childNodes[0].nodeValue.trim();attrs=merge$1(attrs,{label:labelVal})}const contentProtection=findChildren(adaptationSet,"ContentProtection").reduce(((acc,node)=>{const attributes=parseAttributes(node);attributes.schemeIdUri&&(attributes.schemeIdUri=attributes.schemeIdUri.toLowerCase());const keySystem=keySystemsMap[attributes.schemeIdUri];if(keySystem){acc[keySystem]={attributes:attributes};const psshNode=findChildren(node,"cenc:pssh")[0];if(psshNode){const pssh=getContent(psshNode);acc[keySystem].pssh=pssh&&decodeB64ToUint8Array(pssh)}}return acc}),{});Object.keys(contentProtection).length&&(attrs=merge$1(attrs,{contentProtection:contentProtection}));const segmentInfo=getSegmentInformation(adaptationSet),representations=findChildren(adaptationSet,"Representation"),adaptationSetSegmentInfo=merge$1(periodSegmentInfo,segmentInfo);return flatten(representations.map(((adaptationSetAttributes,adaptationSetBaseUrls,adaptationSetSegmentInfo)=>representation=>{const repBaseUrlElements=findChildren(representation,"BaseURL"),repBaseUrls=buildBaseUrls(adaptationSetBaseUrls,repBaseUrlElements),attributes=merge$1(adaptationSetAttributes,parseAttributes(representation)),representationSegmentInfo=getSegmentInformation(representation);return repBaseUrls.map((baseUrl=>({segmentInfo:merge$1(adaptationSetSegmentInfo,representationSegmentInfo),attributes:merge$1(attributes,{baseUrl:baseUrl})})))})(attrs,adaptationSetBaseUrls,adaptationSetSegmentInfo)))},toAdaptationSets=(mpdAttributes,mpdBaseUrls)=>(period,index)=>{const periodBaseUrls=buildBaseUrls(mpdBaseUrls,findChildren(period.node,"BaseURL")),periodAttributes=merge$1(mpdAttributes,{periodStart:period.attributes.start});"number"==typeof period.attributes.duration&&(periodAttributes.periodDuration=period.attributes.duration);const adaptationSets=findChildren(period.node,"AdaptationSet"),periodSegmentInfo=getSegmentInformation(period.node);return flatten(adaptationSets.map(toRepresentations(periodAttributes,periodBaseUrls,periodSegmentInfo)))},getPeriodStart=_ref27=>{let{attributes:attributes,priorPeriodAttributes:priorPeriodAttributes,mpdType:mpdType}=_ref27;return"number"==typeof attributes.start?attributes.start:priorPeriodAttributes&&"number"==typeof priorPeriodAttributes.start&&"number"==typeof priorPeriodAttributes.duration?priorPeriodAttributes.start+priorPeriodAttributes.duration:priorPeriodAttributes||"static"!==mpdType?null:0},inheritAttributes=function(mpd){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};const{manifestUri:manifestUri="",NOW:NOW=Date.now(),clientOffset:clientOffset=0}=options,periodNodes=findChildren(mpd,"Period");if(!periodNodes.length)throw new Error(errors_INVALID_NUMBER_OF_PERIOD);const locations=findChildren(mpd,"Location"),mpdAttributes=parseAttributes(mpd),mpdBaseUrls=buildBaseUrls([manifestUri],findChildren(mpd,"BaseURL"));mpdAttributes.type=mpdAttributes.type||"static",mpdAttributes.sourceDuration=mpdAttributes.mediaPresentationDuration||0,mpdAttributes.NOW=NOW,mpdAttributes.clientOffset=clientOffset,locations.length&&(mpdAttributes.locations=locations.map(getContent));const periods=[];return periodNodes.forEach(((node,index)=>{const attributes=parseAttributes(node),priorPeriod=periods[index-1];attributes.start=getPeriodStart({attributes:attributes,priorPeriodAttributes:priorPeriod?priorPeriod.attributes:null,mpdType:mpdAttributes.type}),periods.push({node:node,attributes:attributes})})),{locations:mpdAttributes.locations,representationInfo:flatten(periods.map(toAdaptationSets(mpdAttributes,mpdBaseUrls)))}},stringToMpdXml=manifestString=>{if(""===manifestString)throw new Error(errors_DASH_EMPTY_MANIFEST);const parser=new DOMParser;let xml,mpd;try{xml=parser.parseFromString(manifestString,"application/xml"),mpd=xml&&"MPD"===xml.documentElement.tagName?xml.documentElement:null}catch(e){}if(!mpd||mpd&&mpd.getElementsByTagName("parsererror").length>0)throw new Error(errors_DASH_INVALID_XML);return mpd},parseUTCTiming=manifestString=>(mpd=>{const UTCTimingNode=findChildren(mpd,"UTCTiming")[0];if(!UTCTimingNode)return null;const attributes=parseAttributes(UTCTimingNode);switch(attributes.schemeIdUri){case"urn:mpeg:dash:utc:http-head:2014":case"urn:mpeg:dash:utc:http-head:2012":attributes.method="HEAD";break;case"urn:mpeg:dash:utc:http-xsdate:2014":case"urn:mpeg:dash:utc:http-iso:2014":case"urn:mpeg:dash:utc:http-xsdate:2012":case"urn:mpeg:dash:utc:http-iso:2012":attributes.method="GET";break;case"urn:mpeg:dash:utc:direct:2014":case"urn:mpeg:dash:utc:direct:2012":attributes.method="DIRECT",attributes.value=Date.parse(attributes.value);break;default:throw new Error(errors_UNSUPPORTED_UTC_TIMING_SCHEME)}return attributes})(stringToMpdXml(manifestString));var MAX_UINT32=Math.pow(2,32),getUint64=function(uint8){var value,dv=new DataView(uint8.buffer,uint8.byteOffset,uint8.byteLength);return dv.getBigUint64?(value=dv.getBigUint64(0))<Number.MAX_SAFE_INTEGER?Number(value):value:dv.getUint32(0)*MAX_UINT32+dv.getUint32(4)},parseSidx_1=function(data){var view=new DataView(data.buffer,data.byteOffset,data.byteLength),result={version:data[0],flags:new Uint8Array(data.subarray(1,4)),references:[],referenceId:view.getUint32(4),timescale:view.getUint32(8)},i=12;0===result.version?(result.earliestPresentationTime=view.getUint32(i),result.firstOffset=view.getUint32(i+4),i+=8):(result.earliestPresentationTime=getUint64(data.subarray(i)),result.firstOffset=getUint64(data.subarray(i+8)),i+=16),i+=2;var referenceCount=view.getUint16(i);for(i+=2;referenceCount>0;i+=12,referenceCount--)result.references.push({referenceType:(128&data[i])>>>7,referencedSize:2147483647&view.getUint32(i),subsegmentDuration:view.getUint32(i+4),startsWithSap:!!(128&data[i+8]),sapType:(112&data[i+8])>>>4,sapDeltaTime:268435455&view.getUint32(i+8)});return result},ID3=toUint8([73,68,51]),getId3Offset=function getId3Offset(bytes,offset){return void 0===offset&&(offset=0),(bytes=toUint8(bytes)).length-offset<10||!bytesMatch(bytes,ID3,{offset:offset})?offset:(offset+=function(bytes,offset){void 0===offset&&(offset=0);var flags=(bytes=toUint8(bytes))[offset+5],returnSize=bytes[offset+6]<<21|bytes[offset+7]<<14|bytes[offset+8]<<7|bytes[offset+9];return(16&flags)>>4?returnSize+20:returnSize+10}(bytes,offset),getId3Offset(bytes,offset))},normalizePath$1=function(path){return"string"==typeof path?stringToBytes(path):path},findBox=function findBox(bytes,paths,complete){void 0===complete&&(complete=!1),paths=function(paths){return Array.isArray(paths)?paths.map((function(p){return normalizePath$1(p)})):[normalizePath$1(paths)]}(paths),bytes=toUint8(bytes);var results=[];if(!paths.length)return results;for(var i=0;i<bytes.length;){var size=(bytes[i]<<24|bytes[i+1]<<16|bytes[i+2]<<8|bytes[i+3])>>>0,type=bytes.subarray(i+4,i+8);if(0===size)break;var end=i+size;if(end>bytes.length){if(complete)break;end=bytes.length}var data=bytes.subarray(i+8,end);bytesMatch(type,paths[0])&&(1===paths.length?results.push(data):results.push.apply(results,findBox(data,paths.slice(1),complete))),i=end}return results},EBML_TAGS={EBML:toUint8([26,69,223,163]),DocType:toUint8([66,130]),Segment:toUint8([24,83,128,103]),SegmentInfo:toUint8([21,73,169,102]),Tracks:toUint8([22,84,174,107]),Track:toUint8([174]),TrackNumber:toUint8([215]),DefaultDuration:toUint8([35,227,131]),TrackEntry:toUint8([174]),TrackType:toUint8([131]),FlagDefault:toUint8([136]),CodecID:toUint8([134]),CodecPrivate:toUint8([99,162]),VideoTrack:toUint8([224]),AudioTrack:toUint8([225]),Cluster:toUint8([31,67,182,117]),Timestamp:toUint8([231]),TimestampScale:toUint8([42,215,177]),BlockGroup:toUint8([160]),BlockDuration:toUint8([155]),Block:toUint8([161]),SimpleBlock:toUint8([163])},LENGTH_TABLE=[128,64,32,16,8,4,2,1],getvint=function(bytes,offset,removeLength,signed){void 0===removeLength&&(removeLength=!0),void 0===signed&&(signed=!1);var length=function(byte){for(var len=1,i=0;i<LENGTH_TABLE.length&&!(byte&LENGTH_TABLE[i]);i++)len++;return len}(bytes[offset]),valueBytes=bytes.subarray(offset,offset+length);return removeLength&&((valueBytes=Array.prototype.slice.call(bytes,offset,offset+length))[0]^=LENGTH_TABLE[length-1]),{length:length,value:bytesToNumber(valueBytes,{signed:signed}),bytes:valueBytes}},normalizePath=function normalizePath(path){return"string"==typeof path?path.match(/.{1,2}/g).map((function(p){return normalizePath(p)})):"number"==typeof path?numberToBytes(path):path},getInfinityDataSize=function getInfinityDataSize(id,bytes,offset){if(offset>=bytes.length)return bytes.length;var innerid=getvint(bytes,offset,!1);if(bytesMatch(id.bytes,innerid.bytes))return offset;var dataHeader=getvint(bytes,offset+innerid.length);return getInfinityDataSize(id,bytes,offset+dataHeader.length+dataHeader.value+innerid.length)},findEbml=function findEbml(bytes,paths){paths=function(paths){return Array.isArray(paths)?paths.map((function(p){return normalizePath(p)})):[normalizePath(paths)]}(paths),bytes=toUint8(bytes);var results=[];if(!paths.length)return results;for(var i=0;i<bytes.length;){var id=getvint(bytes,i,!1),dataHeader=getvint(bytes,i+id.length),dataStart=i+id.length+dataHeader.length;127===dataHeader.value&&(dataHeader.value=getInfinityDataSize(id,bytes,dataStart),dataHeader.value!==bytes.length&&(dataHeader.value-=dataStart));var dataEnd=dataStart+dataHeader.value>bytes.length?bytes.length:dataStart+dataHeader.value,data=bytes.subarray(dataStart,dataEnd);bytesMatch(paths[0],id.bytes)&&(1===paths.length?results.push(data):results=results.concat(findEbml(data,paths.slice(1)))),i+=id.length+dataHeader.length+data.length}return results},NAL_TYPE_ONE=toUint8([0,0,0,1]),NAL_TYPE_TWO=toUint8([0,0,1]),EMULATION_PREVENTION=toUint8([0,0,3]),discardEmulationPreventionBytes=function(bytes){for(var positions=[],i=1;i<bytes.length-2;)bytesMatch(bytes.subarray(i,i+3),EMULATION_PREVENTION)&&(positions.push(i+2),i++),i++;if(0===positions.length)return bytes;var newLength=bytes.length-positions.length,newData=new Uint8Array(newLength),sourceIndex=0;for(i=0;i<newLength;sourceIndex++,i++)sourceIndex===positions[0]&&(sourceIndex++,positions.shift()),newData[i]=bytes[sourceIndex];return newData},findNal=function(bytes,dataType,types,nalLimit){void 0===nalLimit&&(nalLimit=1/0),bytes=toUint8(bytes),types=[].concat(types);for(var nalStart,i=0,nalsFound=0;i<bytes.length&&(nalsFound<nalLimit||nalStart);){var nalOffset=void 0;if(bytesMatch(bytes.subarray(i),NAL_TYPE_ONE)?nalOffset=4:bytesMatch(bytes.subarray(i),NAL_TYPE_TWO)&&(nalOffset=3),nalOffset){if(nalsFound++,nalStart)return discardEmulationPreventionBytes(bytes.subarray(nalStart,i));var nalType=void 0;"h264"===dataType?nalType=31&bytes[i+nalOffset]:"h265"===dataType&&(nalType=bytes[i+nalOffset]>>1&63),-1!==types.indexOf(nalType)&&(nalStart=i+nalOffset),i+=nalOffset+("h264"===dataType?1:2)}else i++}return bytes.subarray(0,0)},CONSTANTS={webm:toUint8([119,101,98,109]),matroska:toUint8([109,97,116,114,111,115,107,97]),flac:toUint8([102,76,97,67]),ogg:toUint8([79,103,103,83]),ac3:toUint8([11,119]),riff:toUint8([82,73,70,70]),avi:toUint8([65,86,73]),wav:toUint8([87,65,86,69]),"3gp":toUint8([102,116,121,112,51,103]),mp4:toUint8([102,116,121,112]),fmp4:toUint8([115,116,121,112]),mov:toUint8([102,116,121,112,113,116]),moov:toUint8([109,111,111,118]),moof:toUint8([109,111,111,102])},_isLikely={aac:function(bytes){var offset=getId3Offset(bytes);return bytesMatch(bytes,[255,16],{offset:offset,mask:[255,22]})},mp3:function(bytes){var offset=getId3Offset(bytes);return bytesMatch(bytes,[255,2],{offset:offset,mask:[255,6]})},webm:function(bytes){var docType=findEbml(bytes,[EBML_TAGS.EBML,EBML_TAGS.DocType])[0];return bytesMatch(docType,CONSTANTS.webm)},mkv:function(bytes){var docType=findEbml(bytes,[EBML_TAGS.EBML,EBML_TAGS.DocType])[0];return bytesMatch(docType,CONSTANTS.matroska)},mp4:function(bytes){return!_isLikely["3gp"](bytes)&&!_isLikely.mov(bytes)&&(!(!bytesMatch(bytes,CONSTANTS.mp4,{offset:4})&&!bytesMatch(bytes,CONSTANTS.fmp4,{offset:4}))||(!(!bytesMatch(bytes,CONSTANTS.moof,{offset:4})&&!bytesMatch(bytes,CONSTANTS.moov,{offset:4}))||void 0))},mov:function(bytes){return bytesMatch(bytes,CONSTANTS.mov,{offset:4})},"3gp":function(bytes){return bytesMatch(bytes,CONSTANTS["3gp"],{offset:4})},ac3:function(bytes){var offset=getId3Offset(bytes);return bytesMatch(bytes,CONSTANTS.ac3,{offset:offset})},ts:function(bytes){if(bytes.length<189&&bytes.length>=1)return 71===bytes[0];for(var i=0;i+188<bytes.length&&i<188;){if(71===bytes[i]&&71===bytes[i+188])return!0;i+=1}return!1},flac:function(bytes){var offset=getId3Offset(bytes);return bytesMatch(bytes,CONSTANTS.flac,{offset:offset})},ogg:function(bytes){return bytesMatch(bytes,CONSTANTS.ogg)},avi:function(bytes){return bytesMatch(bytes,CONSTANTS.riff)&&bytesMatch(bytes,CONSTANTS.avi,{offset:8})},wav:function(bytes){return bytesMatch(bytes,CONSTANTS.riff)&&bytesMatch(bytes,CONSTANTS.wav,{offset:8})},h264:function(bytes){return function(bytes,type,nalLimit){return findNal(bytes,"h264",type,nalLimit)}(bytes,7,3).length},h265:function(bytes){return function(bytes,type,nalLimit){return findNal(bytes,"h265",type,nalLimit)}(bytes,[32,33],3).length}},isLikelyTypes=Object.keys(_isLikely).filter((function(t){return"ts"!==t&&"h264"!==t&&"h265"!==t})).concat(["ts","h264","h265"]);isLikelyTypes.forEach((function(type){var isLikelyFn=_isLikely[type];_isLikely[type]=function(bytes){return isLikelyFn(toUint8(bytes))}}));var secondsToVideoTs,secondsToAudioTs,videoTsToSeconds,audioTsToSeconds,isLikely=_isLikely,detectContainerForBytes=function(bytes){bytes=toUint8(bytes);for(var i=0;i<isLikelyTypes.length;i++){var type=isLikelyTypes[i];if(isLikely[type](bytes))return type}return""};secondsToVideoTs=function(seconds){return 9e4*seconds},secondsToAudioTs=function(seconds,sampleRate){return seconds*sampleRate},videoTsToSeconds=function(timestamp){return timestamp/9e4},audioTsToSeconds=function(timestamp,sampleRate){return timestamp/sampleRate};var clock_1=9e4;
-/*! @name @videojs/http-streaming @version 3.0.2 @license Apache-2.0 */
-const resolveUrl=function(baseUrl,relativeUrl){if(/^[a-z]+:/i.test(relativeUrl))return relativeUrl;/^data:/.test(baseUrl)&&(baseUrl=window.location&&window.location.href||"");var nativeURL="function"==typeof window.URL,protocolLess=/^\/\//.test(baseUrl),removeLocation=!window.location&&!/\/\//i.test(baseUrl);if(nativeURL?baseUrl=new window.URL(baseUrl,window.location||"http://example.com"):/\/\//i.test(baseUrl)||(baseUrl=urlToolkit.buildAbsoluteURL(window.location&&window.location.href||"",baseUrl)),nativeURL){var newUrl=new URL(relativeUrl,baseUrl);return removeLocation?newUrl.href.slice("http://example.com".length):protocolLess?newUrl.href.slice(newUrl.protocol.length):newUrl.href}return urlToolkit.buildAbsoluteURL(baseUrl,relativeUrl)},resolveManifestRedirect=(url,req)=>req&&req.responseURL&&url!==req.responseURL?req.responseURL:url,logger=source=>videojs.log.debug?videojs.log.debug.bind(videojs,"VHS:","".concat(source," >")):function(){};function merge(){const context=videojs.obj||videojs,fn=context.merge||context.mergeOptions;for(var _len24=arguments.length,args=new Array(_len24),_key24=0;_key24<_len24;_key24++)args[_key24]=arguments[_key24];return fn.apply(context,args)}function createTimeRanges(){const context=videojs.time||videojs,fn=context.createTimeRanges||context.createTimeRanges;for(var _len25=arguments.length,args=new Array(_len25),_key25=0;_key25<_len25;_key25++)args[_key25]=arguments[_key25];return fn.apply(context,args)}const filterRanges=function(timeRanges,predicate){const results=[];let i;if(timeRanges&&timeRanges.length)for(i=0;i<timeRanges.length;i++)predicate(timeRanges.start(i),timeRanges.end(i))&&results.push([timeRanges.start(i),timeRanges.end(i)]);return createTimeRanges(results)},findRange=function(buffered,time){return filterRanges(buffered,(function(start,end){return start-.1<=time&&end+.1>=time}))},findNextRange=function(timeRanges,time){return filterRanges(timeRanges,(function(start){return start-.03333333333333333>=time}))},printableRange=range=>{const strArr=[];if(!range||!range.length)return"";for(let i=0;i<range.length;i++)strArr.push(range.start(i)+" => "+range.end(i));return strArr.join(", ")},timeRangesToArray=timeRanges=>{const timeRangesList=[];for(let i=0;i<timeRanges.length;i++)timeRangesList.push({start:timeRanges.start(i),end:timeRanges.end(i)});return timeRangesList},lastBufferedEnd=function(a){if(a&&a.length&&a.end)return a.end(a.length-1)},timeAheadOf=function(range,startTime){let time=0;if(!range||!range.length)return time;for(let i=0;i<range.length;i++){const start=range.start(i),end=range.end(i);startTime>end||(time+=startTime>start&&startTime<=end?end-startTime:end-start)}return time},segmentDurationWithParts=(playlist,segment)=>{if(!segment.preload)return segment.duration;let result=0;return(segment.parts||[]).forEach((function(p){result+=p.duration})),(segment.preloadHints||[]).forEach((function(p){"PART"===p.type&&(result+=playlist.partTargetDuration)})),result},getPartsAndSegments=playlist=>(playlist.segments||[]).reduce(((acc,segment,si)=>(segment.parts?segment.parts.forEach((function(part,pi){acc.push({duration:part.duration,segmentIndex:si,partIndex:pi,part:part,segment:segment})})):acc.push({duration:segment.duration,segmentIndex:si,partIndex:null,segment:segment,part:null}),acc)),[]),getLastParts=media=>{const lastSegment=media.segments&&media.segments.length&&media.segments[media.segments.length-1];return lastSegment&&lastSegment.parts||[]},getKnownPartCount=_ref28=>{let{preloadSegment:preloadSegment}=_ref28;if(!preloadSegment)return;const{parts:parts,preloadHints:preloadHints}=preloadSegment;let partCount=(preloadHints||[]).reduce(((count,hint)=>count+("PART"===hint.type?1:0)),0);return partCount+=parts&&parts.length?parts.length:0,partCount},liveEdgeDelay=(main,media)=>{if(media.endList)return 0;if(main&&main.suggestedPresentationDelay)return main.suggestedPresentationDelay;const hasParts=getLastParts(media).length>0;return hasParts&&media.serverControl&&media.serverControl.partHoldBack?media.serverControl.partHoldBack:hasParts&&media.partTargetDuration?3*media.partTargetDuration:media.serverControl&&media.serverControl.holdBack?media.serverControl.holdBack:media.targetDuration?3*media.targetDuration:0},intervalDuration=function(playlist,endSequence,expired){if(void 0===endSequence&&(endSequence=playlist.mediaSequence+playlist.segments.length),endSequence<playlist.mediaSequence)return 0;const backward=function(playlist,endSequence){let result=0,i=endSequence-playlist.mediaSequence,segment=playlist.segments[i];if(segment){if(void 0!==segment.start)return{result:segment.start,precise:!0};if(void 0!==segment.end)return{result:segment.end-segment.duration,precise:!0}}for(;i--;){if(segment=playlist.segments[i],void 0!==segment.end)return{result:result+segment.end,precise:!0};if(result+=segmentDurationWithParts(playlist,segment),void 0!==segment.start)return{result:result+segment.start,precise:!0}}return{result:result,precise:!1}}(playlist,endSequence);if(backward.precise)return backward.result;const forward=function(playlist,endSequence){let segment,result=0,i=endSequence-playlist.mediaSequence;for(;i<playlist.segments.length;i++){if(segment=playlist.segments[i],void 0!==segment.start)return{result:segment.start-result,precise:!0};if(result+=segmentDurationWithParts(playlist,segment),void 0!==segment.end)return{result:segment.end-result,precise:!0}}return{result:-1,precise:!1}}(playlist,endSequence);return forward.precise?forward.result:backward.result+expired},duration=function(playlist,endSequence,expired){if(!playlist)return 0;if("number"!=typeof expired&&(expired=0),void 0===endSequence){if(playlist.totalDuration)return playlist.totalDuration;if(!playlist.endList)return window.Infinity}return intervalDuration(playlist,endSequence,expired)},sumDurations=function(_ref29){let{defaultDuration:defaultDuration,durationList:durationList,startIndex:startIndex,endIndex:endIndex}=_ref29,durations=0;if(startIndex>endIndex&&([startIndex,endIndex]=[endIndex,startIndex]),startIndex<0){for(let i=startIndex;i<Math.min(0,endIndex);i++)durations+=defaultDuration;startIndex=0}for(let i=startIndex;i<endIndex;i++)durations+=durationList[i].duration;return durations},playlistEnd=function(playlist,expired,useSafeLiveEnd,liveEdgePadding){if(!playlist||!playlist.segments)return null;if(playlist.endList)return duration(playlist);if(null===expired)return null;expired=expired||0;let lastSegmentEndTime=intervalDuration(playlist,playlist.mediaSequence+playlist.segments.length,expired);return useSafeLiveEnd&&(lastSegmentEndTime-=liveEdgePadding="number"==typeof liveEdgePadding?liveEdgePadding:liveEdgeDelay(null,playlist)),Math.max(0,lastSegmentEndTime)},isExcluded=function(playlist){return playlist.excludeUntil&&playlist.excludeUntil>Date.now()},isIncompatible=function(playlist){return playlist.excludeUntil&&playlist.excludeUntil===1/0},isEnabled=function(playlist){const excluded=isExcluded(playlist);return!playlist.disabled&&!excluded},hasAttribute=function(attr,playlist){return playlist.attributes&&playlist.attributes[attr]},isLowestEnabledRendition=(main,media)=>{if(1===main.playlists.length)return!0;const currentBandwidth=media.attributes.BANDWIDTH||Number.MAX_VALUE;return 0===main.playlists.filter((playlist=>!!isEnabled(playlist)&&(playlist.attributes.BANDWIDTH||0)<currentBandwidth)).length},playlistMatch=(a,b)=>!(!a&&!b||!a&&b||a&&!b)&&(a===b||(!(!a.id||!b.id||a.id!==b.id)||(!(!a.resolvedUri||!b.resolvedUri||a.resolvedUri!==b.resolvedUri)||!(!a.uri||!b.uri||a.uri!==b.uri)))),someAudioVariant=function(main,callback){const AUDIO=main&&main.mediaGroups&&main.mediaGroups.AUDIO||{};let found=!1;for(const groupName in AUDIO){for(const label in AUDIO[groupName])if(found=callback(AUDIO[groupName][label]),found)break;if(found)break}return!!found},isAudioOnly=main=>{if(!main||!main.playlists||!main.playlists.length){return someAudioVariant(main,(variant=>variant.playlists&&variant.playlists.length||variant.uri))}for(let i=0;i<main.playlists.length;i++){const playlist=main.playlists[i],CODECS=playlist.attributes&&playlist.attributes.CODECS;if(CODECS&&CODECS.split(",").every((c=>isAudioCodec(c))))continue;if(!someAudioVariant(main,(variant=>playlistMatch(playlist,variant))))return!1}return!0};var Playlist={liveEdgeDelay:liveEdgeDelay,duration:duration,seekable:function(playlist,expired,liveEdgePadding){const seekableStart=expired||0,seekableEnd=playlistEnd(playlist,expired,!0,liveEdgePadding);return null===seekableEnd?createTimeRanges():createTimeRanges(seekableStart,seekableEnd)},getMediaInfoForTime:function(_ref30){let{playlist:playlist,currentTime:currentTime,startingSegmentIndex:startingSegmentIndex,startingPartIndex:startingPartIndex,startTime:startTime,exactManifestTimings:exactManifestTimings}=_ref30,time=currentTime-startTime;const partsAndSegments=getPartsAndSegments(playlist);let startIndex=0;for(let i=0;i<partsAndSegments.length;i++){const partAndSegment=partsAndSegments[i];if(startingSegmentIndex===partAndSegment.segmentIndex&&("number"!=typeof startingPartIndex||"number"!=typeof partAndSegment.partIndex||startingPartIndex===partAndSegment.partIndex)){startIndex=i;break}}if(time<0){if(startIndex>0)for(let i=startIndex-1;i>=0;i--){const partAndSegment=partsAndSegments[i];if(time+=partAndSegment.duration,exactManifestTimings){if(time<0)continue}else if(time+.03333333333333333<=0)continue;return{partIndex:partAndSegment.partIndex,segmentIndex:partAndSegment.segmentIndex,startTime:startTime-sumDurations({defaultDuration:playlist.targetDuration,durationList:partsAndSegments,startIndex:startIndex,endIndex:i})}}return{partIndex:partsAndSegments[0]&&partsAndSegments[0].partIndex||null,segmentIndex:partsAndSegments[0]&&partsAndSegments[0].segmentIndex||0,startTime:currentTime}}if(startIndex<0){for(let i=startIndex;i<0;i++)if(time-=playlist.targetDuration,time<0)return{partIndex:partsAndSegments[0]&&partsAndSegments[0].partIndex||null,segmentIndex:partsAndSegments[0]&&partsAndSegments[0].segmentIndex||0,startTime:currentTime};startIndex=0}for(let i=startIndex;i<partsAndSegments.length;i++){const partAndSegment=partsAndSegments[i];if(time-=partAndSegment.duration,exactManifestTimings){if(time>0)continue}else if(time-.03333333333333333>=0)continue;return{partIndex:partAndSegment.partIndex,segmentIndex:partAndSegment.segmentIndex,startTime:startTime+sumDurations({defaultDuration:playlist.targetDuration,durationList:partsAndSegments,startIndex:startIndex,endIndex:i})}}return{segmentIndex:partsAndSegments[partsAndSegments.length-1].segmentIndex,partIndex:partsAndSegments[partsAndSegments.length-1].partIndex,startTime:currentTime}},isEnabled:isEnabled,isDisabled:function(playlist){return playlist.disabled},isExcluded:isExcluded,isIncompatible:isIncompatible,playlistEnd:playlistEnd,isAes:function(media){for(let i=0;i<media.segments.length;i++)if(media.segments[i].key)return!0;return!1},hasAttribute:hasAttribute,estimateSegmentRequestTime:function(segmentDuration,bandwidth,playlist){let bytesReceived=arguments.length>3&&void 0!==arguments[3]?arguments[3]:0;if(!hasAttribute("BANDWIDTH",playlist))return NaN;const size=segmentDuration*playlist.attributes.BANDWIDTH;return(size-8*bytesReceived)/bandwidth},isLowestEnabledRendition:isLowestEnabledRendition,isAudioOnly:isAudioOnly,playlistMatch:playlistMatch,segmentDurationWithParts:segmentDurationWithParts};const{log:log}=videojs,createPlaylistID=(index,uri)=>"".concat(index,"-").concat(uri),groupID=(type,group,label)=>"placeholder-uri-".concat(type,"-").concat(group,"-").concat(label),forEachMediaGroup=(main,callback)=>{main.mediaGroups&&["AUDIO","SUBTITLES"].forEach((mediaType=>{if(main.mediaGroups[mediaType])for(const groupKey in main.mediaGroups[mediaType])for(const labelKey in main.mediaGroups[mediaType][groupKey]){const mediaProperties=main.mediaGroups[mediaType][groupKey][labelKey];callback(mediaProperties,mediaType,groupKey,labelKey)}}))},setupMediaPlaylist=_ref32=>{let{playlist:playlist,uri:uri,id:id}=_ref32;playlist.id=id,playlist.playlistErrors_=0,uri&&(playlist.uri=uri),playlist.attributes=playlist.attributes||{}},setupMediaPlaylists=main=>{let i=main.playlists.length;for(;i--;){const playlist=main.playlists[i];setupMediaPlaylist({playlist:playlist,id:createPlaylistID(i,playlist.uri)}),playlist.resolvedUri=resolveUrl(main.uri,playlist.uri),main.playlists[playlist.id]=playlist,main.playlists[playlist.uri]=playlist,playlist.attributes.BANDWIDTH||log.warn("Invalid playlist STREAM-INF detected. Missing BANDWIDTH attribute.")}},resolveMediaGroupUris=main=>{forEachMediaGroup(main,(properties=>{properties.uri&&(properties.resolvedUri=resolveUrl(main.uri,properties.uri))}))},addPropertiesToMain=function(main,uri){let createGroupID=arguments.length>2&&void 0!==arguments[2]?arguments[2]:groupID;main.uri=uri;for(let i=0;i<main.playlists.length;i++)if(!main.playlists[i].uri){const phonyUri="placeholder-uri-".concat(i);main.playlists[i].uri=phonyUri}const audioOnlyMain=isAudioOnly(main);forEachMediaGroup(main,((properties,mediaType,groupKey,labelKey)=>{if(!properties.playlists||!properties.playlists.length){if(audioOnlyMain&&"AUDIO"===mediaType&&!properties.uri)for(let i=0;i<main.playlists.length;i++){const p=main.playlists[i];if(p.attributes&&p.attributes.AUDIO&&p.attributes.AUDIO===groupKey)return}properties.playlists=[_extends$1({},properties)]}properties.playlists.forEach((function(p,i){const groupId=createGroupID(mediaType,groupKey,labelKey,p),id=createPlaylistID(i,groupId);p.uri?p.resolvedUri=p.resolvedUri||resolveUrl(main.uri,p.uri):(p.uri=0===i?groupId:id,p.resolvedUri=p.uri),p.id=p.id||id,p.attributes=p.attributes||{},main.playlists[p.id]=p,main.playlists[p.uri]=p}))})),setupMediaPlaylists(main),resolveMediaGroupUris(main)},{EventTarget:EventTarget$1}=videojs,updateSegment=(a,b)=>{if(!a)return b;const result=merge(a,b);if(a.preloadHints&&!b.preloadHints&&delete result.preloadHints,a.parts&&!b.parts)delete result.parts;else if(a.parts&&b.parts)for(let i=0;i<b.parts.length;i++)a.parts&&a.parts[i]&&(result.parts[i]=merge(a.parts[i],b.parts[i]));return!a.skipped&&b.skipped&&(result.skipped=!1),a.preload&&!b.preload&&(result.preload=!1),result},updateSegments=(original,update,offset)=>{const oldSegments=original.slice(),newSegments=update.slice();offset=offset||0;const result=[];let currentMap;for(let newIndex=0;newIndex<newSegments.length;newIndex++){const oldSegment=oldSegments[newIndex+offset],newSegment=newSegments[newIndex];oldSegment?(currentMap=oldSegment.map||currentMap,result.push(updateSegment(oldSegment,newSegment))):(currentMap&&!newSegment.map&&(newSegment.map=currentMap),result.push(newSegment))}return result},resolveSegmentUris=(segment,baseUri)=>{!segment.resolvedUri&&segment.uri&&(segment.resolvedUri=resolveUrl(baseUri,segment.uri)),segment.key&&!segment.key.resolvedUri&&(segment.key.resolvedUri=resolveUrl(baseUri,segment.key.uri)),segment.map&&!segment.map.resolvedUri&&(segment.map.resolvedUri=resolveUrl(baseUri,segment.map.uri)),segment.map&&segment.map.key&&!segment.map.key.resolvedUri&&(segment.map.key.resolvedUri=resolveUrl(baseUri,segment.map.key.uri)),segment.parts&&segment.parts.length&&segment.parts.forEach((p=>{p.resolvedUri||(p.resolvedUri=resolveUrl(baseUri,p.uri))})),segment.preloadHints&&segment.preloadHints.length&&segment.preloadHints.forEach((p=>{p.resolvedUri||(p.resolvedUri=resolveUrl(baseUri,p.uri))}))},getAllSegments=function(media){const segments=media.segments||[],preloadSegment=media.preloadSegment;if(preloadSegment&&preloadSegment.parts&&preloadSegment.parts.length){if(preloadSegment.preloadHints)for(let i=0;i<preloadSegment.preloadHints.length;i++)if("MAP"===preloadSegment.preloadHints[i].type)return segments;preloadSegment.duration=media.targetDuration,preloadSegment.preload=!0,segments.push(preloadSegment)}return segments},isPlaylistUnchanged=(a,b)=>a===b||a.segments&&b.segments&&a.segments.length===b.segments.length&&a.endList===b.endList&&a.mediaSequence===b.mediaSequence&&a.preloadSegment===b.preloadSegment,updateMain$1=function(main,newMedia){let unchangedCheck=arguments.length>2&&void 0!==arguments[2]?arguments[2]:isPlaylistUnchanged;const result=merge(main,{}),oldMedia=result.playlists[newMedia.id];if(!oldMedia)return null;if(unchangedCheck(oldMedia,newMedia))return null;newMedia.segments=getAllSegments(newMedia);const mergedPlaylist=merge(oldMedia,newMedia);if(mergedPlaylist.preloadSegment&&!newMedia.preloadSegment&&delete mergedPlaylist.preloadSegment,oldMedia.segments){if(newMedia.skip){newMedia.segments=newMedia.segments||[];for(let i=0;i<newMedia.skip.skippedSegments;i++)newMedia.segments.unshift({skipped:!0})}mergedPlaylist.segments=updateSegments(oldMedia.segments,newMedia.segments,newMedia.mediaSequence-oldMedia.mediaSequence)}mergedPlaylist.segments.forEach((segment=>{resolveSegmentUris(segment,mergedPlaylist.resolvedUri)}));for(let i=0;i<result.playlists.length;i++)result.playlists[i].id===newMedia.id&&(result.playlists[i]=mergedPlaylist);return result.playlists[newMedia.id]=mergedPlaylist,result.playlists[newMedia.uri]=mergedPlaylist,forEachMediaGroup(main,((properties,mediaType,groupKey,labelKey)=>{if(properties.playlists)for(let i=0;i<properties.playlists.length;i++)newMedia.id===properties.playlists[i].id&&(properties.playlists[i]=mergedPlaylist)})),result},refreshDelay=(media,update)=>{const segments=media.segments||[],lastSegment=segments[segments.length-1],lastPart=lastSegment&&lastSegment.parts&&lastSegment.parts[lastSegment.parts.length-1],lastDuration=lastPart&&lastPart.duration||lastSegment&&lastSegment.duration;return update&&lastDuration?1e3*lastDuration:500*(media.partTargetDuration||media.targetDuration||10)};class PlaylistLoader extends EventTarget$1{constructor(src,vhs){let options=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};if(super(),!src)throw new Error("A non-empty playlist URL or object is required");this.logger_=logger("PlaylistLoader");const{withCredentials:withCredentials=!1}=options;this.src=src,this.vhs_=vhs,this.withCredentials=withCredentials;const vhsOptions=vhs.options_;this.customTagParsers=vhsOptions&&vhsOptions.customTagParsers||[],this.customTagMappers=vhsOptions&&vhsOptions.customTagMappers||[],this.llhls=vhsOptions&&vhsOptions.llhls,this.state="HAVE_NOTHING",this.handleMediaupdatetimeout_=this.handleMediaupdatetimeout_.bind(this),this.on("mediaupdatetimeout",this.handleMediaupdatetimeout_)}handleMediaupdatetimeout_(){if("HAVE_METADATA"!==this.state)return;const media=this.media();let uri=resolveUrl(this.main.uri,media.uri);this.llhls&&(uri=((uri,media)=>{if(media.endList||!media.serverControl)return uri;const parameters={};if(media.serverControl.canBlockReload){const{preloadSegment:preloadSegment}=media;let nextMSN=media.mediaSequence+media.segments.length;if(preloadSegment){const parts=preloadSegment.parts||[],nextPart=getKnownPartCount(media)-1;nextPart>-1&&nextPart!==parts.length-1&&(parameters._HLS_part=nextPart),(nextPart>-1||parts.length)&&nextMSN--}parameters._HLS_msn=nextMSN}if(media.serverControl&&media.serverControl.canSkipUntil&&(parameters._HLS_skip=media.serverControl.canSkipDateranges?"v2":"YES"),Object.keys(parameters).length){const parsedUri=new window.URL(uri);["_HLS_skip","_HLS_msn","_HLS_part"].forEach((function(name){parameters.hasOwnProperty(name)&&parsedUri.searchParams.set(name,parameters[name])})),uri=parsedUri.toString()}return uri})(uri,media)),this.state="HAVE_CURRENT_METADATA",this.request=this.vhs_.xhr({uri:uri,withCredentials:this.withCredentials},((error,req)=>{if(this.request)return error?this.playlistRequestError(this.request,this.media(),"HAVE_METADATA"):void this.haveMetadata({playlistString:this.request.responseText,url:this.media().uri,id:this.media().id})}))}playlistRequestError(xhr,playlist,startingState){const{uri:uri,id:id}=playlist;this.request=null,startingState&&(this.state=startingState),this.error={playlist:this.main.playlists[id],status:xhr.status,message:"HLS playlist request error at URL: ".concat(uri,"."),responseText:xhr.responseText,code:xhr.status>=500?4:2},this.trigger("error")}parseManifest_(_ref33){let{url:url,manifestString:manifestString}=_ref33;return(_ref31=>{let{onwarn:onwarn,oninfo:oninfo,manifestString:manifestString,customTagParsers:customTagParsers=[],customTagMappers:customTagMappers=[],llhls:llhls}=_ref31;const parser=new Parser;onwarn&&parser.on("warn",onwarn),oninfo&&parser.on("info",oninfo),customTagParsers.forEach((customParser=>parser.addParser(customParser))),customTagMappers.forEach((mapper=>parser.addTagMapper(mapper))),parser.push(manifestString),parser.end();const manifest=parser.manifest;if(llhls||(["preloadSegment","skip","serverControl","renditionReports","partInf","partTargetDuration"].forEach((function(k){manifest.hasOwnProperty(k)&&delete manifest[k]})),manifest.segments&&manifest.segments.forEach((function(segment){["parts","preloadHints"].forEach((function(k){segment.hasOwnProperty(k)&&delete segment[k]}))}))),!manifest.targetDuration){let targetDuration=10;manifest.segments&&manifest.segments.length&&(targetDuration=manifest.segments.reduce(((acc,s)=>Math.max(acc,s.duration)),0)),onwarn&&onwarn("manifest has no targetDuration defaulting to ".concat(targetDuration)),manifest.targetDuration=targetDuration}const parts=getLastParts(manifest);if(parts.length&&!manifest.partTargetDuration){const partTargetDuration=parts.reduce(((acc,p)=>Math.max(acc,p.duration)),0);onwarn&&(onwarn("manifest has no partTargetDuration defaulting to ".concat(partTargetDuration)),log.error("LL-HLS manifest has parts but lacks required #EXT-X-PART-INF:PART-TARGET value. See https://datatracker.ietf.org/doc/html/draft-pantos-hls-rfc8216bis-09#section-4.4.3.7. Playback is not guaranteed.")),manifest.partTargetDuration=partTargetDuration}return manifest})({onwarn:_ref34=>{let{message:message}=_ref34;return this.logger_("m3u8-parser warn for ".concat(url,": ").concat(message))},oninfo:_ref35=>{let{message:message}=_ref35;return this.logger_("m3u8-parser info for ".concat(url,": ").concat(message))},manifestString:manifestString,customTagParsers:this.customTagParsers,customTagMappers:this.customTagMappers,llhls:this.llhls})}haveMetadata(_ref36){let{playlistString:playlistString,playlistObject:playlistObject,url:url,id:id}=_ref36;this.request=null,this.state="HAVE_METADATA";const playlist=playlistObject||this.parseManifest_({url:url,manifestString:playlistString});playlist.lastRequest=Date.now(),setupMediaPlaylist({playlist:playlist,uri:url,id:id});const update=updateMain$1(this.main,playlist);this.targetDuration=playlist.partTargetDuration||playlist.targetDuration,this.pendingMedia_=null,update?(this.main=update,this.media_=this.main.playlists[id]):this.trigger("playlistunchanged"),this.updateMediaUpdateTimeout_(refreshDelay(this.media(),!!update)),this.trigger("loadedplaylist")}dispose(){this.trigger("dispose"),this.stopRequest(),window.clearTimeout(this.mediaUpdateTimeout),window.clearTimeout(this.finalRenditionTimeout),this.off()}stopRequest(){if(this.request){const oldRequest=this.request;this.request=null,oldRequest.onreadystatechange=null,oldRequest.abort()}}media(playlist,shouldDelay){if(!playlist)return this.media_;if("HAVE_NOTHING"===this.state)throw new Error("Cannot switch media playlist from "+this.state);if("string"==typeof playlist){if(!this.main.playlists[playlist])throw new Error("Unknown playlist URI: "+playlist);playlist=this.main.playlists[playlist]}if(window.clearTimeout(this.finalRenditionTimeout),shouldDelay){const delay=(playlist.partTargetDuration||playlist.targetDuration)/2*1e3||5e3;return void(this.finalRenditionTimeout=window.setTimeout(this.media.bind(this,playlist,!1),delay))}const startingState=this.state,mediaChange=!this.media_||playlist.id!==this.media_.id,mainPlaylistRef=this.main.playlists[playlist.id];if(mainPlaylistRef&&mainPlaylistRef.endList||playlist.endList&&playlist.segments.length)return this.request&&(this.request.onreadystatechange=null,this.request.abort(),this.request=null),this.state="HAVE_METADATA",this.media_=playlist,void(mediaChange&&(this.trigger("mediachanging"),"HAVE_MAIN_MANIFEST"===startingState?this.trigger("loadedmetadata"):this.trigger("mediachange")));if(this.updateMediaUpdateTimeout_(refreshDelay(playlist,!0)),mediaChange){if(this.state="SWITCHING_MEDIA",this.request){if(playlist.resolvedUri===this.request.url)return;this.request.onreadystatechange=null,this.request.abort(),this.request=null}this.media_&&this.trigger("mediachanging"),this.pendingMedia_=playlist,this.request=this.vhs_.xhr({uri:playlist.resolvedUri,withCredentials:this.withCredentials},((error,req)=>{if(this.request){if(playlist.lastRequest=Date.now(),playlist.resolvedUri=resolveManifestRedirect(playlist.resolvedUri,req),error)return this.playlistRequestError(this.request,playlist,startingState);this.haveMetadata({playlistString:req.responseText,url:playlist.uri,id:playlist.id}),"HAVE_MAIN_MANIFEST"===startingState?this.trigger("loadedmetadata"):this.trigger("mediachange")}}))}}pause(){this.mediaUpdateTimeout&&(window.clearTimeout(this.mediaUpdateTimeout),this.mediaUpdateTimeout=null),this.stopRequest(),"HAVE_NOTHING"===this.state&&(this.started=!1),"SWITCHING_MEDIA"===this.state?this.media_?this.state="HAVE_METADATA":this.state="HAVE_MAIN_MANIFEST":"HAVE_CURRENT_METADATA"===this.state&&(this.state="HAVE_METADATA")}load(shouldDelay){this.mediaUpdateTimeout&&(window.clearTimeout(this.mediaUpdateTimeout),this.mediaUpdateTimeout=null);const media=this.media();if(shouldDelay){const delay=media?(media.partTargetDuration||media.targetDuration)/2*1e3:5e3;this.mediaUpdateTimeout=window.setTimeout((()=>{this.mediaUpdateTimeout=null,this.load()}),delay)}else this.started?media&&!media.endList?this.trigger("mediaupdatetimeout"):this.trigger("loadedplaylist"):this.start()}updateMediaUpdateTimeout_(delay){this.mediaUpdateTimeout&&(window.clearTimeout(this.mediaUpdateTimeout),this.mediaUpdateTimeout=null),this.media()&&!this.media().endList&&(this.mediaUpdateTimeout=window.setTimeout((()=>{this.mediaUpdateTimeout=null,this.trigger("mediaupdatetimeout"),this.updateMediaUpdateTimeout_(delay)}),delay))}start(){if(this.started=!0,"object"==typeof this.src)return this.src.uri||(this.src.uri=window.location.href),this.src.resolvedUri=this.src.uri,void setTimeout((()=>{this.setupInitialPlaylist(this.src)}),0);this.request=this.vhs_.xhr({uri:this.src,withCredentials:this.withCredentials},((error,req)=>{if(!this.request)return;if(this.request=null,error)return this.error={status:req.status,message:"HLS playlist request error at URL: ".concat(this.src,"."),responseText:req.responseText,code:2},"HAVE_NOTHING"===this.state&&(this.started=!1),this.trigger("error");this.src=resolveManifestRedirect(this.src,req);const manifest=this.parseManifest_({manifestString:req.responseText,url:this.src});this.setupInitialPlaylist(manifest)}))}srcUri(){return"string"==typeof this.src?this.src:this.src.uri}setupInitialPlaylist(manifest){if(this.state="HAVE_MAIN_MANIFEST",manifest.playlists)return this.main=manifest,addPropertiesToMain(this.main,this.srcUri()),manifest.playlists.forEach((playlist=>{playlist.segments=getAllSegments(playlist),playlist.segments.forEach((segment=>{resolveSegmentUris(segment,playlist.resolvedUri)}))})),this.trigger("loadedplaylist"),void(this.request||this.media(this.main.playlists[0]));const uri=this.srcUri()||window.location.href;this.main=((media,uri)=>{const id=createPlaylistID(0,uri),main={mediaGroups:{AUDIO:{},VIDEO:{},"CLOSED-CAPTIONS":{},SUBTITLES:{}},uri:window.location.href,resolvedUri:window.location.href,playlists:[{uri:uri,id:id,resolvedUri:uri,attributes:{}}]};return main.playlists[id]=main.playlists[0],main.playlists[uri]=main.playlists[0],main})(0,uri),this.haveMetadata({playlistObject:manifest,url:uri,id:this.main.playlists[0].id}),this.trigger("loadedmetadata")}}const{xhr:videojsXHR}=videojs,callbackWrapper=function(request,error,response,callback){const reqResponse="arraybuffer"===request.responseType?request.response:request.responseText;!error&&reqResponse&&(request.responseTime=Date.now(),request.roundTripTime=request.responseTime-request.requestTime,request.bytesReceived=reqResponse.byteLength||reqResponse.length,request.bandwidth||(request.bandwidth=Math.floor(request.bytesReceived/request.roundTripTime*8*1e3))),response.headers&&(request.responseHeaders=response.headers),error&&"ETIMEDOUT"===error.code&&(request.timedout=!0),error||request.aborted||200===response.statusCode||206===response.statusCode||0===response.statusCode||(error=new Error("XHR Failed with a response of: "+(request&&(reqResponse||request.responseText)))),callback(error,request)},xhrFactory=function(){const xhr=function XhrFunction(options,callback){options=merge({timeout:45e3},options);const beforeRequest=XhrFunction.beforeRequest||videojs.Vhs.xhr.beforeRequest;if(beforeRequest&&"function"==typeof beforeRequest){const newOptions=beforeRequest(options);newOptions&&(options=newOptions)}const request=(!0===videojs.Vhs.xhr.original?videojsXHR:videojs.Vhs.xhr)(options,(function(error,response){return callbackWrapper(request,error,response,callback)})),originalAbort=request.abort;return request.abort=function(){return request.aborted=!0,originalAbort.apply(request,arguments)},request.uri=options.uri,request.requestTime=Date.now(),request};return xhr.original=!0,xhr},segmentXhrHeaders=function(segment){const headers={};return segment.byterange&&(headers.Range=function(byterange){let byterangeEnd;const byterangeStart=byterange.offset;return byterangeEnd="bigint"==typeof byterange.offset||"bigint"==typeof byterange.length?window.BigInt(byterange.offset)+window.BigInt(byterange.length)-window.BigInt(1):byterange.offset+byterange.length-1,"bytes="+byterangeStart+"-"+byterangeEnd}(segment.byterange)),headers},textRange=function(range,i){return range.start(i)+"-"+range.end(i)},formatHexString=function(e,i){const value=e.toString(16);return"00".substring(0,2-value.length)+value+(i%2?" ":"")},formatAsciiString=function(e){return e>=32&&e<126?String.fromCharCode(e):"."},createTransferableMessage=function(message){const transferable={};return Object.keys(message).forEach((key=>{const value=message[key];isArrayBufferView(value)?transferable[key]={bytes:value.buffer,byteOffset:value.byteOffset,byteLength:value.byteLength}:transferable[key]=value})),transferable},initSegmentId=function(initSegment){const byterange=initSegment.byterange||{length:1/0,offset:0};return[byterange.length,byterange.offset,initSegment.resolvedUri].join(",")},segmentKeyId=function(key){return key.resolvedUri},hexDump=data=>{const bytes=Array.prototype.slice.call(data);let hex,ascii,result="";for(let j=0;j<bytes.length/16;j++)hex=bytes.slice(16*j,16*j+16).map(formatHexString).join(""),ascii=bytes.slice(16*j,16*j+16).map(formatAsciiString).join(""),result+=hex+" "+ascii+"\n";return result};var utils=Object.freeze({__proto__:null,createTransferableMessage:createTransferableMessage,initSegmentId:initSegmentId,segmentKeyId:segmentKeyId,hexDump:hexDump,tagDump:_ref37=>{let{bytes:bytes}=_ref37;return hexDump(bytes)},textRanges:ranges=>{let i,result="";for(i=0;i<ranges.length;i++)result+=textRange(ranges,i)+" ";return result}});const getProgramTime=_ref38=>{let{playlist:playlist,time:time,callback:callback}=_ref38;if(!callback)throw new Error("getProgramTime: callback must be provided");if(!playlist||void 0===time)return callback({message:"getProgramTime: playlist and time must be provided"});const matchedSegment=((time,playlist)=>{if(!playlist||!playlist.segments||0===playlist.segments.length)return null;let segment,segmentEnd=0;for(let i=0;i<playlist.segments.length&&(segment=playlist.segments[i],segmentEnd=segment.videoTimingInfo?segment.videoTimingInfo.transmuxedPresentationEnd:segmentEnd+segment.duration,!(time<=segmentEnd));i++);const lastSegment=playlist.segments[playlist.segments.length-1];if(lastSegment.videoTimingInfo&&lastSegment.videoTimingInfo.transmuxedPresentationEnd<time)return null;if(time>segmentEnd){if(time>segmentEnd+.25*lastSegment.duration)return null;segment=lastSegment}return{segment:segment,estimatedStart:segment.videoTimingInfo?segment.videoTimingInfo.transmuxedPresentationStart:segmentEnd-segment.duration,type:segment.videoTimingInfo?"accurate":"estimate"}})(time,playlist);if(!matchedSegment)return callback({message:"valid programTime was not found"});if("estimate"===matchedSegment.type)return callback({message:"Accurate programTime could not be determined. Please seek to e.seekTime and try again",seekTime:matchedSegment.estimatedStart});const programTimeObject={mediaSeconds:time},programTime=((playerTime,segment)=>{if(!segment.dateTimeObject)return null;const transmuxerPrependedSeconds=segment.videoTimingInfo.transmuxerPrependedSeconds,offsetFromSegmentStart=playerTime-(segment.videoTimingInfo.transmuxedPresentationStart+transmuxerPrependedSeconds);return new Date(segment.dateTimeObject.getTime()+1e3*offsetFromSegmentStart)})(time,matchedSegment.segment);return programTime&&(programTimeObject.programDateTime=programTime.toISOString()),callback(null,programTimeObject)},seekToProgramTime=_ref39=>{let{programTime:programTime,playlist:playlist,retryCount:retryCount=2,seekTo:seekTo,pauseAfterSeek:pauseAfterSeek=!0,tech:tech,callback:callback}=_ref39;if(!callback)throw new Error("seekToProgramTime: callback must be provided");if(void 0===programTime||!playlist||!seekTo)return callback({message:"seekToProgramTime: programTime, seekTo and playlist must be provided"});if(!playlist.endList&&!tech.hasStarted_)return callback({message:"player must be playing a live stream to start buffering"});if(!(playlist=>{if(!playlist.segments||0===playlist.segments.length)return!1;for(let i=0;i<playlist.segments.length;i++)if(!playlist.segments[i].dateTimeObject)return!1;return!0})(playlist))return callback({message:"programDateTime tags must be provided in the manifest "+playlist.resolvedUri});const matchedSegment=((programTime,playlist)=>{let dateTimeObject;try{dateTimeObject=new Date(programTime)}catch(e){return null}if(!playlist||!playlist.segments||0===playlist.segments.length)return null;let segment=playlist.segments[0];if(dateTimeObject<segment.dateTimeObject)return null;for(let i=0;i<playlist.segments.length-1&&(segment=playlist.segments[i],!(dateTimeObject<playlist.segments[i+1].dateTimeObject));i++);const lastSegment=playlist.segments[playlist.segments.length-1],lastSegmentStart=lastSegment.dateTimeObject,lastSegmentDuration=lastSegment.videoTimingInfo?(videoTimingInfo=lastSegment.videoTimingInfo).transmuxedPresentationEnd-videoTimingInfo.transmuxedPresentationStart-videoTimingInfo.transmuxerPrependedSeconds:lastSegment.duration+.25*lastSegment.duration;var videoTimingInfo;return dateTimeObject>new Date(lastSegmentStart.getTime()+1e3*lastSegmentDuration)?null:(dateTimeObject>lastSegmentStart&&(segment=lastSegment),{segment:segment,estimatedStart:segment.videoTimingInfo?segment.videoTimingInfo.transmuxedPresentationStart:Playlist.duration(playlist,playlist.mediaSequence+playlist.segments.indexOf(segment)),type:segment.videoTimingInfo?"accurate":"estimate"})})(programTime,playlist);if(!matchedSegment)return callback({message:"".concat(programTime," was not found in the stream")});const segment=matchedSegment.segment,mediaOffset=((comparisonTimeStamp,programTime)=>{let segmentDateTime,programDateTime;try{segmentDateTime=new Date(comparisonTimeStamp),programDateTime=new Date(programTime)}catch(e){}const segmentTimeEpoch=segmentDateTime.getTime();return(programDateTime.getTime()-segmentTimeEpoch)/1e3})(segment.dateTimeObject,programTime);if("estimate"===matchedSegment.type)return 0===retryCount?callback({message:"".concat(programTime," is not buffered yet. Try again")}):(seekTo(matchedSegment.estimatedStart+mediaOffset),void tech.one("seeked",(()=>{seekToProgramTime({programTime:programTime,playlist:playlist,retryCount:retryCount-1,seekTo:seekTo,pauseAfterSeek:pauseAfterSeek,tech:tech,callback:callback})})));const seekToTime=segment.start+mediaOffset;tech.one("seeked",(()=>callback(null,tech.currentTime()))),pauseAfterSeek&&tech.pause(),seekTo(seekToTime)},callbackOnCompleted=(request,cb)=>{if(4===request.readyState)return cb()},containerRequest=(uri,xhr,cb)=>{let id3Offset,bytes=[],finished=!1;const endRequestAndCallback=function(err,req,type,_bytes){return req.abort(),finished=!0,cb(err,req,type,_bytes)},progressListener=function(error,request){if(finished)return;if(error)return endRequestAndCallback(error,request,"",bytes);const newPart=request.responseText.substring(bytes&&bytes.byteLength||0,request.responseText.length);if(bytes=function(){for(var _len=arguments.length,buffers=new Array(_len),_key=0;_key<_len;_key++)buffers[_key]=arguments[_key];if(buffers=buffers.filter((function(b){return b&&(b.byteLength||b.length)&&"string"!=typeof b})),buffers.length<=1)return toUint8(buffers[0]);var totalLen=buffers.reduce((function(total,buf,i){return total+(buf.byteLength||buf.length)}),0),tempBuffer=new Uint8Array(totalLen),offset=0;return buffers.forEach((function(buf){buf=toUint8(buf),tempBuffer.set(buf,offset),offset+=buf.byteLength})),tempBuffer}(bytes,stringToBytes(newPart,!0)),id3Offset=id3Offset||getId3Offset(bytes),bytes.length<10||id3Offset&&bytes.length<id3Offset+2)return callbackOnCompleted(request,(()=>endRequestAndCallback(error,request,"",bytes)));const type=detectContainerForBytes(bytes);return"ts"===type&&bytes.length<188||!type&&bytes.length<376?callbackOnCompleted(request,(()=>endRequestAndCallback(error,request,"",bytes))):endRequestAndCallback(null,request,type,bytes)},options={uri:uri,beforeSend(request){request.overrideMimeType("text/plain; charset=x-user-defined"),request.addEventListener("progress",(function(_ref40){let{total:total,loaded:loaded}=_ref40;return callbackWrapper(request,null,{statusCode:request.status},progressListener)}))}},request=xhr(options,(function(error,response){return callbackWrapper(request,error,response,progressListener)}));return request},{EventTarget:EventTarget}=videojs,dashPlaylistUnchanged=function(a,b){if(!isPlaylistUnchanged(a,b))return!1;if(a.sidx&&b.sidx&&(a.sidx.offset!==b.sidx.offset||a.sidx.length!==b.sidx.length))return!1;if(!a.sidx&&b.sidx||a.sidx&&!b.sidx)return!1;if(a.segments&&!b.segments||!a.segments&&b.segments)return!1;if(!a.segments&&!b.segments)return!0;for(let i=0;i<a.segments.length;i++){const aSegment=a.segments[i],bSegment=b.segments[i];if(aSegment.uri!==bSegment.uri)return!1;if(!aSegment.byterange&&!bSegment.byterange)continue;const aByterange=aSegment.byterange,bByterange=bSegment.byterange;if(aByterange&&!bByterange||!aByterange&&bByterange)return!1;if(aByterange.offset!==bByterange.offset||aByterange.length!==bByterange.length)return!1}return!0},dashGroupId=(type,group,label,playlist)=>{const playlistId=playlist.attributes.NAME||label;return"placeholder-uri-".concat(type,"-").concat(group,"-").concat(playlistId)},parseMainXml=_ref41=>{let{mainXml:mainXml,srcUrl:srcUrl,clientOffset:clientOffset,sidxMapping:sidxMapping,previousManifest:previousManifest}=_ref41;const manifest=function(manifestString){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};const parsedManifestInfo=inheritAttributes(stringToMpdXml(manifestString),options),playlists=toPlaylists(parsedManifestInfo.representationInfo);return toM3u8({dashPlaylists:playlists,locations:parsedManifestInfo.locations,sidxMapping:options.sidxMapping,previousManifest:options.previousManifest})}(mainXml,{manifestUri:srcUrl,clientOffset:clientOffset,sidxMapping:sidxMapping,previousManifest:previousManifest});return addPropertiesToMain(manifest,srcUrl,dashGroupId),manifest},updateMain=(oldMain,newMain,sidxMapping)=>{let noChanges=!0,update=merge(oldMain,{duration:newMain.duration,minimumUpdatePeriod:newMain.minimumUpdatePeriod,timelineStarts:newMain.timelineStarts});for(let i=0;i<newMain.playlists.length;i++){const playlist=newMain.playlists[i];if(playlist.sidx){const sidxKey=generateSidxKey(playlist.sidx);sidxMapping&&sidxMapping[sidxKey]&&sidxMapping[sidxKey].sidx&&addSidxSegmentsToPlaylist$1(playlist,sidxMapping[sidxKey].sidx,playlist.sidx.resolvedUri)}const playlistUpdate=updateMain$1(update,playlist,dashPlaylistUnchanged);playlistUpdate&&(update=playlistUpdate,noChanges=!1)}return forEachMediaGroup(newMain,((properties,type,group,label)=>{if(properties.playlists&&properties.playlists.length){const id=properties.playlists[0].id,playlistUpdate=updateMain$1(update,properties.playlists[0],dashPlaylistUnchanged);playlistUpdate&&(update=playlistUpdate,label in update.mediaGroups[type][group]||(update.mediaGroups[type][group][label]=properties),update.mediaGroups[type][group][label].playlists[0]=update.playlists[id],noChanges=!1)}})),((update,newMain)=>{forEachMediaGroup(update,((properties,type,group,label)=>{label in newMain.mediaGroups[type][group]||delete update.mediaGroups[type][group][label]}))})(update,newMain),newMain.minimumUpdatePeriod!==oldMain.minimumUpdatePeriod&&(noChanges=!1),noChanges?null:update},equivalentSidx=(a,b)=>(Boolean(!a.map&&!b.map)||Boolean(a.map&&b.map&&a.map.byterange.offset===b.map.byterange.offset&&a.map.byterange.length===b.map.byterange.length))&&a.uri===b.uri&&a.byterange.offset===b.byterange.offset&&a.byterange.length===b.byterange.length,compareSidxEntry=(playlists,oldSidxMapping)=>{const newSidxMapping={};for(const id in playlists){const currentSidxInfo=playlists[id].sidx;if(currentSidxInfo){const key=generateSidxKey(currentSidxInfo);if(!oldSidxMapping[key])break;const savedSidxInfo=oldSidxMapping[key].sidxInfo;equivalentSidx(savedSidxInfo,currentSidxInfo)&&(newSidxMapping[key]=oldSidxMapping[key])}}return newSidxMapping};class DashPlaylistLoader extends EventTarget{constructor(srcUrlOrPlaylist,vhs){let options=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{},mainPlaylistLoader=arguments.length>3?arguments[3]:void 0;super(),this.mainPlaylistLoader_=mainPlaylistLoader||this,mainPlaylistLoader||(this.isMain_=!0);const{withCredentials:withCredentials=!1}=options;if(this.vhs_=vhs,this.withCredentials=withCredentials,!srcUrlOrPlaylist)throw new Error("A non-empty playlist URL or object is required");this.on("minimumUpdatePeriod",(()=>{this.refreshXml_()})),this.on("mediaupdatetimeout",(()=>{this.refreshMedia_(this.media().id)})),this.state="HAVE_NOTHING",this.loadedPlaylists_={},this.logger_=logger("DashPlaylistLoader"),this.isMain_?(this.mainPlaylistLoader_.srcUrl=srcUrlOrPlaylist,this.mainPlaylistLoader_.sidxMapping_={}):this.childPlaylist_=srcUrlOrPlaylist}requestErrored_(err,request,startingState){return!this.request||(this.request=null,err?(this.error="object"!=typeof err||err instanceof Error?{status:request.status,message:"DASH request error at URL: "+request.uri,response:request.response,code:2}:err,startingState&&(this.state=startingState),this.trigger("error"),!0):void 0)}addSidxSegments_(playlist,startingState,cb){const sidxKey=playlist.sidx&&generateSidxKey(playlist.sidx);if(!playlist.sidx||!sidxKey||this.mainPlaylistLoader_.sidxMapping_[sidxKey])return void(this.mediaRequest_=window.setTimeout((()=>cb(!1)),0));const uri=resolveManifestRedirect(playlist.sidx.resolvedUri),fin=(err,request)=>{if(this.requestErrored_(err,request,startingState))return;const sidxMapping=this.mainPlaylistLoader_.sidxMapping_;let sidx;try{sidx=parseSidx_1(toUint8(request.response).subarray(8))}catch(e){return void this.requestErrored_(e,request,startingState)}return sidxMapping[sidxKey]={sidxInfo:playlist.sidx,sidx:sidx},addSidxSegmentsToPlaylist$1(playlist,sidx,playlist.sidx.resolvedUri),cb(!0)};this.request=containerRequest(uri,this.vhs_.xhr,((err,request,container,bytes)=>{if(err)return fin(err,request);if(!container||"mp4"!==container)return fin({status:request.status,message:"Unsupported ".concat(container||"unknown"," container type for sidx segment at URL: ").concat(uri),response:"",playlist:playlist,internal:!0,playlistExclusionDuration:1/0,code:2},request);const{offset:offset,length:length}=playlist.sidx.byterange;if(bytes.length>=length+offset)return fin(err,{response:bytes.subarray(offset,offset+length),status:request.status,uri:request.uri});this.request=this.vhs_.xhr({uri:uri,responseType:"arraybuffer",headers:segmentXhrHeaders({byterange:playlist.sidx.byterange})},fin)}))}dispose(){this.trigger("dispose"),this.stopRequest(),this.loadedPlaylists_={},window.clearTimeout(this.minimumUpdatePeriodTimeout_),window.clearTimeout(this.mediaRequest_),window.clearTimeout(this.mediaUpdateTimeout),this.mediaUpdateTimeout=null,this.mediaRequest_=null,this.minimumUpdatePeriodTimeout_=null,this.mainPlaylistLoader_.createMupOnMedia_&&(this.off("loadedmetadata",this.mainPlaylistLoader_.createMupOnMedia_),this.mainPlaylistLoader_.createMupOnMedia_=null),this.off()}hasPendingRequest(){return this.request||this.mediaRequest_}stopRequest(){if(this.request){const oldRequest=this.request;this.request=null,oldRequest.onreadystatechange=null,oldRequest.abort()}}media(playlist){if(!playlist)return this.media_;if("HAVE_NOTHING"===this.state)throw new Error("Cannot switch media playlist from "+this.state);const startingState=this.state;if("string"==typeof playlist){if(!this.mainPlaylistLoader_.main.playlists[playlist])throw new Error("Unknown playlist URI: "+playlist);playlist=this.mainPlaylistLoader_.main.playlists[playlist]}const mediaChange=!this.media_||playlist.id!==this.media_.id;if(mediaChange&&this.loadedPlaylists_[playlist.id]&&this.loadedPlaylists_[playlist.id].endList)return this.state="HAVE_METADATA",this.media_=playlist,void(mediaChange&&(this.trigger("mediachanging"),this.trigger("mediachange")));mediaChange&&(this.media_&&this.trigger("mediachanging"),this.addSidxSegments_(playlist,startingState,(sidxChanged=>{this.haveMetadata({startingState:startingState,playlist:playlist})})))}haveMetadata(_ref42){let{startingState:startingState,playlist:playlist}=_ref42;this.state="HAVE_METADATA",this.loadedPlaylists_[playlist.id]=playlist,this.mediaRequest_=null,this.refreshMedia_(playlist.id),"HAVE_MAIN_MANIFEST"===startingState?this.trigger("loadedmetadata"):this.trigger("mediachange")}pause(){this.mainPlaylistLoader_.createMupOnMedia_&&(this.off("loadedmetadata",this.mainPlaylistLoader_.createMupOnMedia_),this.mainPlaylistLoader_.createMupOnMedia_=null),this.stopRequest(),window.clearTimeout(this.mediaUpdateTimeout),this.mediaUpdateTimeout=null,this.isMain_&&(window.clearTimeout(this.mainPlaylistLoader_.minimumUpdatePeriodTimeout_),this.mainPlaylistLoader_.minimumUpdatePeriodTimeout_=null),"HAVE_NOTHING"===this.state&&(this.started=!1)}load(isFinalRendition){window.clearTimeout(this.mediaUpdateTimeout),this.mediaUpdateTimeout=null;const media=this.media();if(isFinalRendition){const delay=media?media.targetDuration/2*1e3:5e3;this.mediaUpdateTimeout=window.setTimeout((()=>this.load()),delay)}else this.started?media&&!media.endList?(this.isMain_&&!this.minimumUpdatePeriodTimeout_&&(this.trigger("minimumUpdatePeriod"),this.updateMinimumUpdatePeriodTimeout_()),this.trigger("mediaupdatetimeout")):this.trigger("loadedplaylist"):this.start()}start(){this.started=!0,this.isMain_?this.requestMain_(((req,mainChanged)=>{this.haveMain_(),this.hasPendingRequest()||this.media_||this.media(this.mainPlaylistLoader_.main.playlists[0])})):this.mediaRequest_=window.setTimeout((()=>this.haveMain_()),0)}requestMain_(cb){this.request=this.vhs_.xhr({uri:this.mainPlaylistLoader_.srcUrl,withCredentials:this.withCredentials},((error,req)=>{if(this.requestErrored_(error,req))return void("HAVE_NOTHING"===this.state&&(this.started=!1));const mainChanged=req.responseText!==this.mainPlaylistLoader_.mainXml_;return this.mainPlaylistLoader_.mainXml_=req.responseText,req.responseHeaders&&req.responseHeaders.date?this.mainLoaded_=Date.parse(req.responseHeaders.date):this.mainLoaded_=Date.now(),this.mainPlaylistLoader_.srcUrl=resolveManifestRedirect(this.mainPlaylistLoader_.srcUrl,req),mainChanged?(this.handleMain_(),void this.syncClientServerClock_((()=>cb(req,mainChanged)))):cb(req,mainChanged)}))}syncClientServerClock_(done){const utcTiming=parseUTCTiming(this.mainPlaylistLoader_.mainXml_);return null===utcTiming?(this.mainPlaylistLoader_.clientOffset_=this.mainLoaded_-Date.now(),done()):"DIRECT"===utcTiming.method?(this.mainPlaylistLoader_.clientOffset_=utcTiming.value-Date.now(),done()):void(this.request=this.vhs_.xhr({uri:resolveUrl(this.mainPlaylistLoader_.srcUrl,utcTiming.value),method:utcTiming.method,withCredentials:this.withCredentials},((error,req)=>{if(!this.request)return;if(error)return this.mainPlaylistLoader_.clientOffset_=this.mainLoaded_-Date.now(),done();let serverTime;serverTime="HEAD"===utcTiming.method?req.responseHeaders&&req.responseHeaders.date?Date.parse(req.responseHeaders.date):this.mainLoaded_:Date.parse(req.responseText),this.mainPlaylistLoader_.clientOffset_=serverTime-Date.now(),done()})))}haveMain_(){this.state="HAVE_MAIN_MANIFEST",this.isMain_?this.trigger("loadedplaylist"):this.media_||this.media(this.childPlaylist_)}handleMain_(){this.mediaRequest_=null;const oldMain=this.mainPlaylistLoader_.main;let newMain=parseMainXml({mainXml:this.mainPlaylistLoader_.mainXml_,srcUrl:this.mainPlaylistLoader_.srcUrl,clientOffset:this.mainPlaylistLoader_.clientOffset_,sidxMapping:this.mainPlaylistLoader_.sidxMapping_,previousManifest:oldMain});oldMain&&(newMain=updateMain(oldMain,newMain,this.mainPlaylistLoader_.sidxMapping_)),this.mainPlaylistLoader_.main=newMain||oldMain;const location=this.mainPlaylistLoader_.main.locations&&this.mainPlaylistLoader_.main.locations[0];return location&&location!==this.mainPlaylistLoader_.srcUrl&&(this.mainPlaylistLoader_.srcUrl=location),(!oldMain||newMain&&newMain.minimumUpdatePeriod!==oldMain.minimumUpdatePeriod)&&this.updateMinimumUpdatePeriodTimeout_(),Boolean(newMain)}updateMinimumUpdatePeriodTimeout_(){const mpl=this.mainPlaylistLoader_;mpl.createMupOnMedia_&&(mpl.off("loadedmetadata",mpl.createMupOnMedia_),mpl.createMupOnMedia_=null),mpl.minimumUpdatePeriodTimeout_&&(window.clearTimeout(mpl.minimumUpdatePeriodTimeout_),mpl.minimumUpdatePeriodTimeout_=null);let mup=mpl.main&&mpl.main.minimumUpdatePeriod;0===mup&&(mpl.media()?mup=1e3*mpl.media().targetDuration:(mpl.createMupOnMedia_=mpl.updateMinimumUpdatePeriodTimeout_,mpl.one("loadedmetadata",mpl.createMupOnMedia_))),"number"!=typeof mup||mup<=0?mup<0&&this.logger_("found invalid minimumUpdatePeriod of ".concat(mup,", not setting a timeout")):this.createMUPTimeout_(mup)}createMUPTimeout_(mup){const mpl=this.mainPlaylistLoader_;mpl.minimumUpdatePeriodTimeout_=window.setTimeout((()=>{mpl.minimumUpdatePeriodTimeout_=null,mpl.trigger("minimumUpdatePeriod"),mpl.createMUPTimeout_(mup)}),mup)}refreshXml_(){this.requestMain_(((req,mainChanged)=>{mainChanged&&(this.media_&&(this.media_=this.mainPlaylistLoader_.main.playlists[this.media_.id]),this.mainPlaylistLoader_.sidxMapping_=((main,oldSidxMapping)=>{let mediaGroupSidx=compareSidxEntry(main.playlists,oldSidxMapping);return forEachMediaGroup(main,((properties,mediaType,groupKey,labelKey)=>{if(properties.playlists&&properties.playlists.length){const playlists=properties.playlists;mediaGroupSidx=merge(mediaGroupSidx,compareSidxEntry(playlists,oldSidxMapping))}})),mediaGroupSidx})(this.mainPlaylistLoader_.main,this.mainPlaylistLoader_.sidxMapping_),this.addSidxSegments_(this.media(),this.state,(sidxChanged=>{this.refreshMedia_(this.media().id)})))}))}refreshMedia_(mediaID){if(!mediaID)throw new Error("refreshMedia_ must take a media id");this.media_&&this.isMain_&&this.handleMain_();const playlists=this.mainPlaylistLoader_.main.playlists,mediaChanged=!this.media_||this.media_!==playlists[mediaID];if(mediaChanged?this.media_=playlists[mediaID]:this.trigger("playlistunchanged"),!this.mediaUpdateTimeout){const createMediaUpdateTimeout=()=>{this.media().endList||(this.mediaUpdateTimeout=window.setTimeout((()=>{this.trigger("mediaupdatetimeout"),createMediaUpdateTimeout()}),refreshDelay(this.media(),Boolean(mediaChanged))))};createMediaUpdateTimeout()}this.trigger("loadedplaylist")}}var Config={GOAL_BUFFER_LENGTH:30,MAX_GOAL_BUFFER_LENGTH:60,BACK_BUFFER_LENGTH:30,GOAL_BUFFER_LENGTH_RATE:1,INITIAL_BANDWIDTH:4194304,BANDWIDTH_VARIANCE:1.2,BUFFER_LOW_WATER_LINE:0,MAX_BUFFER_LOW_WATER_LINE:30,EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE:16,BUFFER_LOW_WATER_LINE_RATE:1,BUFFER_HIGH_WATER_LINE:30};const browserWorkerPolyFill=function(workerObj){return workerObj.on=workerObj.addEventListener,workerObj.off=workerObj.removeEventListener,workerObj},factory=function(code){return function(){const objectUrl=function(str){try{return URL.createObjectURL(new Blob([str],{type:"application/javascript"}))}catch(e){const blob=new BlobBuilder;return blob.append(str),URL.createObjectURL(blob.getBlob())}}(code),worker=browserWorkerPolyFill(new Worker(objectUrl));worker.objURL=objectUrl;const terminate=worker.terminate;return worker.on=worker.addEventListener,worker.off=worker.removeEventListener,worker.terminate=function(){return URL.revokeObjectURL(objectUrl),terminate.call(this)},worker}},transform=function(code){return"var browserWorkerPolyFill = ".concat(browserWorkerPolyFill.toString(),";\n")+"browserWorkerPolyFill(self);\n"+code},getWorkerString=function(fn){return fn.toString().replace(/^function.+?{/,"").slice(0,-1)},workerCode$1=transform(getWorkerString((function(){var commonjsGlobal="undefined"!=typeof globalThis?globalThis:"undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:{},Stream$8=function(){this.init=function(){var listeners={};this.on=function(type,listener){listeners[type]||(listeners[type]=[]),listeners[type]=listeners[type].concat(listener)},this.off=function(type,listener){var index;return!!listeners[type]&&(index=listeners[type].indexOf(listener),listeners[type]=listeners[type].slice(),listeners[type].splice(index,1),index>-1)},this.trigger=function(type){var callbacks,i,length,args;if(callbacks=listeners[type])if(2===arguments.length)for(length=callbacks.length,i=0;i<length;++i)callbacks[i].call(this,arguments[1]);else{for(args=[],i=arguments.length,i=1;i<arguments.length;++i)args.push(arguments[i]);for(length=callbacks.length,i=0;i<length;++i)callbacks[i].apply(this,args)}},this.dispose=function(){listeners={}}}};Stream$8.prototype.pipe=function(destination){return this.on("data",(function(data){destination.push(data)})),this.on("done",(function(flushSource){destination.flush(flushSource)})),this.on("partialdone",(function(flushSource){destination.partialFlush(flushSource)})),this.on("endedtimeline",(function(flushSource){destination.endTimeline(flushSource)})),this.on("reset",(function(flushSource){destination.reset(flushSource)})),destination},Stream$8.prototype.push=function(data){this.trigger("data",data)},Stream$8.prototype.flush=function(flushSource){this.trigger("done",flushSource)},Stream$8.prototype.partialFlush=function(flushSource){this.trigger("partialdone",flushSource)},Stream$8.prototype.endTimeline=function(flushSource){this.trigger("endedtimeline",flushSource)},Stream$8.prototype.reset=function(flushSource){this.trigger("reset",flushSource)};var box,dinf,esds,ftyp,mfhd,minf,moof,moov,mvex,mvhd,trak,tkhd,mdia,mdhd,hdlr,sdtp,stbl,stsd,traf,trex,trun$1,types,MAJOR_BRAND,MINOR_VERSION,AVC1_BRAND,VIDEO_HDLR,AUDIO_HDLR,HDLR_TYPES,VMHD,SMHD,DREF,STCO,STSC,STSZ,STTS,videoSample,audioSample,audioTrun,videoTrun,trunHeader,stream=Stream$8,MAX_UINT32$1=Math.pow(2,32),numbers={getUint64:function(uint8){var value,dv=new DataView(uint8.buffer,uint8.byteOffset,uint8.byteLength);return dv.getBigUint64?(value=dv.getBigUint64(0))<Number.MAX_SAFE_INTEGER?Number(value):value:dv.getUint32(0)*MAX_UINT32$1+dv.getUint32(4)},MAX_UINT32:MAX_UINT32$1},MAX_UINT32=numbers.MAX_UINT32;!function(){var i;if(types={avc1:[],avcC:[],btrt:[],dinf:[],dref:[],esds:[],ftyp:[],hdlr:[],mdat:[],mdhd:[],mdia:[],mfhd:[],minf:[],moof:[],moov:[],mp4a:[],mvex:[],mvhd:[],pasp:[],sdtp:[],smhd:[],stbl:[],stco:[],stsc:[],stsd:[],stsz:[],stts:[],styp:[],tfdt:[],tfhd:[],traf:[],trak:[],trun:[],trex:[],tkhd:[],vmhd:[]},"undefined"!=typeof Uint8Array){for(i in types)types.hasOwnProperty(i)&&(types[i]=[i.charCodeAt(0),i.charCodeAt(1),i.charCodeAt(2),i.charCodeAt(3)]);MAJOR_BRAND=new Uint8Array(["i".charCodeAt(0),"s".charCodeAt(0),"o".charCodeAt(0),"m".charCodeAt(0)]),AVC1_BRAND=new Uint8Array(["a".charCodeAt(0),"v".charCodeAt(0),"c".charCodeAt(0),"1".charCodeAt(0)]),MINOR_VERSION=new Uint8Array([0,0,0,1]),VIDEO_HDLR=new Uint8Array([0,0,0,0,0,0,0,0,118,105,100,101,0,0,0,0,0,0,0,0,0,0,0,0,86,105,100,101,111,72,97,110,100,108,101,114,0]),AUDIO_HDLR=new Uint8Array([0,0,0,0,0,0,0,0,115,111,117,110,0,0,0,0,0,0,0,0,0,0,0,0,83,111,117,110,100,72,97,110,100,108,101,114,0]),HDLR_TYPES={video:VIDEO_HDLR,audio:AUDIO_HDLR},DREF=new Uint8Array([0,0,0,0,0,0,0,1,0,0,0,12,117,114,108,32,0,0,0,1]),SMHD=new Uint8Array([0,0,0,0,0,0,0,0]),STCO=new Uint8Array([0,0,0,0,0,0,0,0]),STSC=STCO,STSZ=new Uint8Array([0,0,0,0,0,0,0,0,0,0,0,0]),STTS=STCO,VMHD=new Uint8Array([0,0,0,1,0,0,0,0,0,0,0,0])}}(),box=function(type){var i,result,payload=[],size=0;for(i=1;i<arguments.length;i++)payload.push(arguments[i]);for(i=payload.length;i--;)size+=payload[i].byteLength;for(result=new Uint8Array(size+8),new DataView(result.buffer,result.byteOffset,result.byteLength).setUint32(0,result.byteLength),result.set(type,4),i=0,size=8;i<payload.length;i++)result.set(payload[i],size),size+=payload[i].byteLength;return result},dinf=function(){return box(types.dinf,box(types.dref,DREF))},esds=function(track){return box(types.esds,new Uint8Array([0,0,0,0,3,25,0,0,0,4,17,64,21,0,6,0,0,0,218,192,0,0,218,192,5,2,track.audioobjecttype<<3|track.samplingfrequencyindex>>>1,track.samplingfrequencyindex<<7|track.channelcount<<3,6,1,2]))},hdlr=function(type){return box(types.hdlr,HDLR_TYPES[type])},mdhd=function(track){var result=new Uint8Array([0,0,0,0,0,0,0,2,0,0,0,3,0,1,95,144,track.duration>>>24&255,track.duration>>>16&255,track.duration>>>8&255,255&track.duration,85,196,0,0]);return track.samplerate&&(result[12]=track.samplerate>>>24&255,result[13]=track.samplerate>>>16&255,result[14]=track.samplerate>>>8&255,result[15]=255&track.samplerate),box(types.mdhd,result)},mdia=function(track){return box(types.mdia,mdhd(track),hdlr(track.type),minf(track))},mfhd=function(sequenceNumber){return box(types.mfhd,new Uint8Array([0,0,0,0,(4278190080&sequenceNumber)>>24,(16711680&sequenceNumber)>>16,(65280&sequenceNumber)>>8,255&sequenceNumber]))},minf=function(track){return box(types.minf,"video"===track.type?box(types.vmhd,VMHD):box(types.smhd,SMHD),dinf(),stbl(track))},moof=function(sequenceNumber,tracks){for(var trackFragments=[],i=tracks.length;i--;)trackFragments[i]=traf(tracks[i]);return box.apply(null,[types.moof,mfhd(sequenceNumber)].concat(trackFragments))},moov=function(tracks){for(var i=tracks.length,boxes=[];i--;)boxes[i]=trak(tracks[i]);return box.apply(null,[types.moov,mvhd(4294967295)].concat(boxes).concat(mvex(tracks)))},mvex=function(tracks){for(var i=tracks.length,boxes=[];i--;)boxes[i]=trex(tracks[i]);return box.apply(null,[types.mvex].concat(boxes))},mvhd=function(duration){var bytes=new Uint8Array([0,0,0,0,0,0,0,1,0,0,0,2,0,1,95,144,(4278190080&duration)>>24,(16711680&duration)>>16,(65280&duration)>>8,255&duration,0,1,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,64,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255]);return box(types.mvhd,bytes)},sdtp=function(track){var flags,i,samples=track.samples||[],bytes=new Uint8Array(4+samples.length);for(i=0;i<samples.length;i++)flags=samples[i].flags,bytes[i+4]=flags.dependsOn<<4|flags.isDependedOn<<2|flags.hasRedundancy;return box(types.sdtp,bytes)},stbl=function(track){return box(types.stbl,stsd(track),box(types.stts,STTS),box(types.stsc,STSC),box(types.stsz,STSZ),box(types.stco,STCO))},stsd=function(track){return box(types.stsd,new Uint8Array([0,0,0,0,0,0,0,1]),"video"===track.type?videoSample(track):audioSample(track))},videoSample=function(track){var i,avc1Box,sps=track.sps||[],pps=track.pps||[],sequenceParameterSets=[],pictureParameterSets=[];for(i=0;i<sps.length;i++)sequenceParameterSets.push((65280&sps[i].byteLength)>>>8),sequenceParameterSets.push(255&sps[i].byteLength),sequenceParameterSets=sequenceParameterSets.concat(Array.prototype.slice.call(sps[i]));for(i=0;i<pps.length;i++)pictureParameterSets.push((65280&pps[i].byteLength)>>>8),pictureParameterSets.push(255&pps[i].byteLength),pictureParameterSets=pictureParameterSets.concat(Array.prototype.slice.call(pps[i]));if(avc1Box=[types.avc1,new Uint8Array([0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,(65280&track.width)>>8,255&track.width,(65280&track.height)>>8,255&track.height,0,72,0,0,0,72,0,0,0,0,0,0,0,1,19,118,105,100,101,111,106,115,45,99,111,110,116,114,105,98,45,104,108,115,0,0,0,0,0,0,0,0,0,0,0,0,0,24,17,17]),box(types.avcC,new Uint8Array([1,track.profileIdc,track.profileCompatibility,track.levelIdc,255].concat([sps.length],sequenceParameterSets,[pps.length],pictureParameterSets))),box(types.btrt,new Uint8Array([0,28,156,128,0,45,198,192,0,45,198,192]))],track.sarRatio){var hSpacing=track.sarRatio[0],vSpacing=track.sarRatio[1];avc1Box.push(box(types.pasp,new Uint8Array([(4278190080&hSpacing)>>24,(16711680&hSpacing)>>16,(65280&hSpacing)>>8,255&hSpacing,(4278190080&vSpacing)>>24,(16711680&vSpacing)>>16,(65280&vSpacing)>>8,255&vSpacing])))}return box.apply(null,avc1Box)},audioSample=function(track){return box(types.mp4a,new Uint8Array([0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,(65280&track.channelcount)>>8,255&track.channelcount,(65280&track.samplesize)>>8,255&track.samplesize,0,0,0,0,(65280&track.samplerate)>>8,255&track.samplerate,0,0]),esds(track))},tkhd=function(track){var result=new Uint8Array([0,0,0,7,0,0,0,0,0,0,0,0,(4278190080&track.id)>>24,(16711680&track.id)>>16,(65280&track.id)>>8,255&track.id,0,0,0,0,(4278190080&track.duration)>>24,(16711680&track.duration)>>16,(65280&track.duration)>>8,255&track.duration,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,64,0,0,0,(65280&track.width)>>8,255&track.width,0,0,(65280&track.height)>>8,255&track.height,0,0]);return box(types.tkhd,result)},traf=function(track){var trackFragmentHeader,trackFragmentDecodeTime,trackFragmentRun,sampleDependencyTable,upperWordBaseMediaDecodeTime,lowerWordBaseMediaDecodeTime;return trackFragmentHeader=box(types.tfhd,new Uint8Array([0,0,0,58,(4278190080&track.id)>>24,(16711680&track.id)>>16,(65280&track.id)>>8,255&track.id,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0])),upperWordBaseMediaDecodeTime=Math.floor(track.baseMediaDecodeTime/MAX_UINT32),lowerWordBaseMediaDecodeTime=Math.floor(track.baseMediaDecodeTime%MAX_UINT32),trackFragmentDecodeTime=box(types.tfdt,new Uint8Array([1,0,0,0,upperWordBaseMediaDecodeTime>>>24&255,upperWordBaseMediaDecodeTime>>>16&255,upperWordBaseMediaDecodeTime>>>8&255,255&upperWordBaseMediaDecodeTime,lowerWordBaseMediaDecodeTime>>>24&255,lowerWordBaseMediaDecodeTime>>>16&255,lowerWordBaseMediaDecodeTime>>>8&255,255&lowerWordBaseMediaDecodeTime])),92,"audio"===track.type?(trackFragmentRun=trun$1(track,92),box(types.traf,trackFragmentHeader,trackFragmentDecodeTime,trackFragmentRun)):(sampleDependencyTable=sdtp(track),trackFragmentRun=trun$1(track,sampleDependencyTable.length+92),box(types.traf,trackFragmentHeader,trackFragmentDecodeTime,trackFragmentRun,sampleDependencyTable))},trak=function(track){return track.duration=track.duration||4294967295,box(types.trak,tkhd(track),mdia(track))},trex=function(track){var result=new Uint8Array([0,0,0,0,(4278190080&track.id)>>24,(16711680&track.id)>>16,(65280&track.id)>>8,255&track.id,0,0,0,1,0,0,0,0,0,0,0,0,0,1,0,1]);return"video"!==track.type&&(result[result.length-1]=0),box(types.trex,result)},trunHeader=function(samples,offset){var durationPresent=0,sizePresent=0,flagsPresent=0,compositionTimeOffset=0;return samples.length&&(void 0!==samples[0].duration&&(durationPresent=1),void 0!==samples[0].size&&(sizePresent=2),void 0!==samples[0].flags&&(flagsPresent=4),void 0!==samples[0].compositionTimeOffset&&(compositionTimeOffset=8)),[0,0,durationPresent|sizePresent|flagsPresent|compositionTimeOffset,1,(4278190080&samples.length)>>>24,(16711680&samples.length)>>>16,(65280&samples.length)>>>8,255&samples.length,(4278190080&offset)>>>24,(16711680&offset)>>>16,(65280&offset)>>>8,255&offset]},videoTrun=function(track,offset){var bytesOffest,bytes,header,samples,sample,i;for(offset+=20+16*(samples=track.samples||[]).length,header=trunHeader(samples,offset),(bytes=new Uint8Array(header.length+16*samples.length)).set(header),bytesOffest=header.length,i=0;i<samples.length;i++)sample=samples[i],bytes[bytesOffest++]=(4278190080&sample.duration)>>>24,bytes[bytesOffest++]=(16711680&sample.duration)>>>16,bytes[bytesOffest++]=(65280&sample.duration)>>>8,bytes[bytesOffest++]=255&sample.duration,bytes[bytesOffest++]=(4278190080&sample.size)>>>24,bytes[bytesOffest++]=(16711680&sample.size)>>>16,bytes[bytesOffest++]=(65280&sample.size)>>>8,bytes[bytesOffest++]=255&sample.size,bytes[bytesOffest++]=sample.flags.isLeading<<2|sample.flags.dependsOn,bytes[bytesOffest++]=sample.flags.isDependedOn<<6|sample.flags.hasRedundancy<<4|sample.flags.paddingValue<<1|sample.flags.isNonSyncSample,bytes[bytesOffest++]=61440&sample.flags.degradationPriority,bytes[bytesOffest++]=15&sample.flags.degradationPriority,bytes[bytesOffest++]=(4278190080&sample.compositionTimeOffset)>>>24,bytes[bytesOffest++]=(16711680&sample.compositionTimeOffset)>>>16,bytes[bytesOffest++]=(65280&sample.compositionTimeOffset)>>>8,bytes[bytesOffest++]=255&sample.compositionTimeOffset;return box(types.trun,bytes)},audioTrun=function(track,offset){var bytes,bytesOffest,header,samples,sample,i;for(offset+=20+8*(samples=track.samples||[]).length,header=trunHeader(samples,offset),(bytes=new Uint8Array(header.length+8*samples.length)).set(header),bytesOffest=header.length,i=0;i<samples.length;i++)sample=samples[i],bytes[bytesOffest++]=(4278190080&sample.duration)>>>24,bytes[bytesOffest++]=(16711680&sample.duration)>>>16,bytes[bytesOffest++]=(65280&sample.duration)>>>8,bytes[bytesOffest++]=255&sample.duration,bytes[bytesOffest++]=(4278190080&sample.size)>>>24,bytes[bytesOffest++]=(16711680&sample.size)>>>16,bytes[bytesOffest++]=(65280&sample.size)>>>8,bytes[bytesOffest++]=255&sample.size;return box(types.trun,bytes)},trun$1=function(track,offset){return"audio"===track.type?audioTrun(track,offset):videoTrun(track,offset)};var silence,secondsToVideoTs,secondsToAudioTs,videoTsToSeconds,audioTsToSeconds,audioTsToVideoTs,videoTsToAudioTs,metadataTsToSeconds,mp4Generator={ftyp:ftyp=function(){return box(types.ftyp,MAJOR_BRAND,MINOR_VERSION,MAJOR_BRAND,AVC1_BRAND)},mdat:function(data){return box(types.mdat,data)},moof:moof,moov:moov,initSegment:function(tracks){var result,fileType=ftyp(),movie=moov(tracks);return(result=new Uint8Array(fileType.byteLength+movie.byteLength)).set(fileType),result.set(movie,fileType.byteLength),result}},sampleForFrame=function(frame,dataOffset){var sample={size:0,flags:{isLeading:0,dependsOn:1,isDependedOn:0,hasRedundancy:0,degradationPriority:0,isNonSyncSample:1}};return sample.dataOffset=dataOffset,sample.compositionTimeOffset=frame.pts-frame.dts,sample.duration=frame.duration,sample.size=4*frame.length,sample.size+=frame.byteLength,frame.keyFrame&&(sample.flags.dependsOn=2,sample.flags.isNonSyncSample=0),sample},frameUtils$1={groupNalsIntoFrames:function(nalUnits){var i,currentNal,currentFrame=[],frames=[];for(frames.byteLength=0,frames.nalCount=0,frames.duration=0,currentFrame.byteLength=0,i=0;i<nalUnits.length;i++)"access_unit_delimiter_rbsp"===(currentNal=nalUnits[i]).nalUnitType?(currentFrame.length&&(currentFrame.duration=currentNal.dts-currentFrame.dts,frames.byteLength+=currentFrame.byteLength,frames.nalCount+=currentFrame.length,frames.duration+=currentFrame.duration,frames.push(currentFrame)),(currentFrame=[currentNal]).byteLength=currentNal.data.byteLength,currentFrame.pts=currentNal.pts,currentFrame.dts=currentNal.dts):("slice_layer_without_partitioning_rbsp_idr"===currentNal.nalUnitType&&(currentFrame.keyFrame=!0),currentFrame.duration=currentNal.dts-currentFrame.dts,currentFrame.byteLength+=currentNal.data.byteLength,currentFrame.push(currentNal));return frames.length&&(!currentFrame.duration||currentFrame.duration<=0)&&(currentFrame.duration=frames[frames.length-1].duration),frames.byteLength+=currentFrame.byteLength,frames.nalCount+=currentFrame.length,frames.duration+=currentFrame.duration,frames.push(currentFrame),frames},groupFramesIntoGops:function(frames){var i,currentFrame,currentGop=[],gops=[];for(currentGop.byteLength=0,currentGop.nalCount=0,currentGop.duration=0,currentGop.pts=frames[0].pts,currentGop.dts=frames[0].dts,gops.byteLength=0,gops.nalCount=0,gops.duration=0,gops.pts=frames[0].pts,gops.dts=frames[0].dts,i=0;i<frames.length;i++)(currentFrame=frames[i]).keyFrame?(currentGop.length&&(gops.push(currentGop),gops.byteLength+=currentGop.byteLength,gops.nalCount+=currentGop.nalCount,gops.duration+=currentGop.duration),(currentGop=[currentFrame]).nalCount=currentFrame.length,currentGop.byteLength=currentFrame.byteLength,currentGop.pts=currentFrame.pts,currentGop.dts=currentFrame.dts,currentGop.duration=currentFrame.duration):(currentGop.duration+=currentFrame.duration,currentGop.nalCount+=currentFrame.length,currentGop.byteLength+=currentFrame.byteLength,currentGop.push(currentFrame));return gops.length&&currentGop.duration<=0&&(currentGop.duration=gops[gops.length-1].duration),gops.byteLength+=currentGop.byteLength,gops.nalCount+=currentGop.nalCount,gops.duration+=currentGop.duration,gops.push(currentGop),gops},extendFirstKeyFrame:function(gops){var currentGop;return!gops[0][0].keyFrame&&gops.length>1&&(currentGop=gops.shift(),gops.byteLength-=currentGop.byteLength,gops.nalCount-=currentGop.nalCount,gops[0][0].dts=currentGop.dts,gops[0][0].pts=currentGop.pts,gops[0][0].duration+=currentGop.duration),gops},generateSampleTable:function(gops,baseDataOffset){var h,i,sample,currentGop,currentFrame,dataOffset=baseDataOffset||0,samples=[];for(h=0;h<gops.length;h++)for(currentGop=gops[h],i=0;i<currentGop.length;i++)currentFrame=currentGop[i],dataOffset+=(sample=sampleForFrame(currentFrame,dataOffset)).size,samples.push(sample);return samples},concatenateNalData:function(gops){var h,i,j,currentGop,currentFrame,currentNal,dataOffset=0,nalsByteLength=gops.byteLength,numberOfNals=gops.nalCount,data=new Uint8Array(nalsByteLength+4*numberOfNals),view=new DataView(data.buffer);for(h=0;h<gops.length;h++)for(currentGop=gops[h],i=0;i<currentGop.length;i++)for(currentFrame=currentGop[i],j=0;j<currentFrame.length;j++)currentNal=currentFrame[j],view.setUint32(dataOffset,currentNal.data.byteLength),dataOffset+=4,data.set(currentNal.data,dataOffset),dataOffset+=currentNal.data.byteLength;return data},generateSampleTableForFrame:function(frame,baseDataOffset){var sample,samples=[];return sample=sampleForFrame(frame,baseDataOffset||0),samples.push(sample),samples},concatenateNalDataForFrame:function(frame){var i,currentNal,dataOffset=0,nalsByteLength=frame.byteLength,numberOfNals=frame.length,data=new Uint8Array(nalsByteLength+4*numberOfNals),view=new DataView(data.buffer);for(i=0;i<frame.length;i++)currentNal=frame[i],view.setUint32(dataOffset,currentNal.data.byteLength),dataOffset+=4,data.set(currentNal.data,dataOffset),dataOffset+=currentNal.data.byteLength;return data}},highPrefix=[33,16,5,32,164,27],lowPrefix=[33,65,108,84,1,2,4,8,168,2,4,8,17,191,252],zeroFill=function(count){for(var a=[];count--;)a.push(0);return a};audioTsToVideoTs=function(timestamp,sampleRate){return secondsToVideoTs(audioTsToSeconds(timestamp,sampleRate))},videoTsToAudioTs=function(timestamp,sampleRate){return secondsToAudioTs(videoTsToSeconds(timestamp),sampleRate)},metadataTsToSeconds=function(timestamp,timelineStartPts,keepOriginalTimestamps){return videoTsToSeconds(keepOriginalTimestamps?timestamp:timestamp-timelineStartPts)};var clock$2={ONE_SECOND_IN_TS:9e4,secondsToVideoTs:secondsToVideoTs=function(seconds){return 9e4*seconds},secondsToAudioTs:secondsToAudioTs=function(seconds,sampleRate){return seconds*sampleRate},videoTsToSeconds:videoTsToSeconds=function(timestamp){return timestamp/9e4},audioTsToSeconds:audioTsToSeconds=function(timestamp,sampleRate){return timestamp/sampleRate},audioTsToVideoTs:audioTsToVideoTs,videoTsToAudioTs:videoTsToAudioTs,metadataTsToSeconds:metadataTsToSeconds},coneOfSilence=function(){if(!silence){var coneOfSilence={96e3:[highPrefix,[227,64],zeroFill(154),[56]],88200:[highPrefix,[231],zeroFill(170),[56]],64e3:[highPrefix,[248,192],zeroFill(240),[56]],48e3:[highPrefix,[255,192],zeroFill(268),[55,148,128],zeroFill(54),[112]],44100:[highPrefix,[255,192],zeroFill(268),[55,163,128],zeroFill(84),[112]],32e3:[highPrefix,[255,192],zeroFill(268),[55,234],zeroFill(226),[112]],24e3:[highPrefix,[255,192],zeroFill(268),[55,255,128],zeroFill(268),[111,112],zeroFill(126),[224]],16e3:[highPrefix,[255,192],zeroFill(268),[55,255,128],zeroFill(268),[111,255],zeroFill(269),[223,108],zeroFill(195),[1,192]],12e3:[lowPrefix,zeroFill(268),[3,127,248],zeroFill(268),[6,255,240],zeroFill(268),[13,255,224],zeroFill(268),[27,253,128],zeroFill(259),[56]],11025:[lowPrefix,zeroFill(268),[3,127,248],zeroFill(268),[6,255,240],zeroFill(268),[13,255,224],zeroFill(268),[27,255,192],zeroFill(268),[55,175,128],zeroFill(108),[112]],8e3:[lowPrefix,zeroFill(268),[3,121,16],zeroFill(47),[7]]};metaTable=coneOfSilence,silence=Object.keys(metaTable).reduce((function(obj,key){return obj[key]=new Uint8Array(metaTable[key].reduce((function(arr,part){return arr.concat(part)}),[])),obj}),{})}var metaTable;return silence},clock$1=clock$2,audioFrameUtils$1={prefixWithSilence:function(track,frames,audioAppendStartTs,videoBaseMediaDecodeTime){var baseMediaDecodeTimeTs,frameDuration,silentFrame,i,firstFrame,audioGapDuration=0,audioFillFrameCount=0,audioFillDuration=0;if(frames.length&&(baseMediaDecodeTimeTs=clock$1.audioTsToVideoTs(track.baseMediaDecodeTime,track.samplerate),frameDuration=Math.ceil(clock$1.ONE_SECOND_IN_TS/(track.samplerate/1024)),audioAppendStartTs&&videoBaseMediaDecodeTime&&(audioGapDuration=baseMediaDecodeTimeTs-Math.max(audioAppendStartTs,videoBaseMediaDecodeTime),audioFillDuration=(audioFillFrameCount=Math.floor(audioGapDuration/frameDuration))*frameDuration),!(audioFillFrameCount<1||audioFillDuration>clock$1.ONE_SECOND_IN_TS/2))){for((silentFrame=coneOfSilence()[track.samplerate])||(silentFrame=frames[0].data),i=0;i<audioFillFrameCount;i++)firstFrame=frames[0],frames.splice(0,0,{data:silentFrame,dts:firstFrame.dts-frameDuration,pts:firstFrame.pts-frameDuration});return track.baseMediaDecodeTime-=Math.floor(clock$1.videoTsToAudioTs(audioFillDuration,track.samplerate)),audioFillDuration}},trimAdtsFramesByEarliestDts:function(adtsFrames,track,earliestAllowedDts){return track.minSegmentDts>=earliestAllowedDts?adtsFrames:(track.minSegmentDts=1/0,adtsFrames.filter((function(currentFrame){return currentFrame.dts>=earliestAllowedDts&&(track.minSegmentDts=Math.min(track.minSegmentDts,currentFrame.dts),track.minSegmentPts=track.minSegmentDts,!0)})))},generateSampleTable:function(frames){var i,currentFrame,samples=[];for(i=0;i<frames.length;i++)currentFrame=frames[i],samples.push({size:currentFrame.data.byteLength,duration:1024});return samples},concatenateFrameData:function(frames){var i,currentFrame,dataOffset=0,data=new Uint8Array(function(array){var i,sum=0;for(i=0;i<array.length;i++)sum+=array[i].data.byteLength;return sum}(frames));for(i=0;i<frames.length;i++)currentFrame=frames[i],data.set(currentFrame.data,dataOffset),dataOffset+=currentFrame.data.byteLength;return data}},ONE_SECOND_IN_TS$3=clock$2.ONE_SECOND_IN_TS,trackDecodeInfo$1={clearDtsInfo:function(track){delete track.minSegmentDts,delete track.maxSegmentDts,delete track.minSegmentPts,delete track.maxSegmentPts},calculateTrackBaseMediaDecodeTime:function(track,keepOriginalTimestamps){var baseMediaDecodeTime,minSegmentDts=track.minSegmentDts;return keepOriginalTimestamps||(minSegmentDts-=track.timelineStartInfo.dts),baseMediaDecodeTime=track.timelineStartInfo.baseMediaDecodeTime,baseMediaDecodeTime+=minSegmentDts,baseMediaDecodeTime=Math.max(0,baseMediaDecodeTime),"audio"===track.type&&(baseMediaDecodeTime*=track.samplerate/ONE_SECOND_IN_TS$3,baseMediaDecodeTime=Math.floor(baseMediaDecodeTime)),baseMediaDecodeTime},collectDtsInfo:function(track,data){"number"==typeof data.pts&&(void 0===track.timelineStartInfo.pts&&(track.timelineStartInfo.pts=data.pts),void 0===track.minSegmentPts?track.minSegmentPts=data.pts:track.minSegmentPts=Math.min(track.minSegmentPts,data.pts),void 0===track.maxSegmentPts?track.maxSegmentPts=data.pts:track.maxSegmentPts=Math.max(track.maxSegmentPts,data.pts)),"number"==typeof data.dts&&(void 0===track.timelineStartInfo.dts&&(track.timelineStartInfo.dts=data.dts),void 0===track.minSegmentDts?track.minSegmentDts=data.dts:track.minSegmentDts=Math.min(track.minSegmentDts,data.dts),void 0===track.maxSegmentDts?track.maxSegmentDts=data.dts:track.maxSegmentDts=Math.max(track.maxSegmentDts,data.dts))}},captionPacketParser={parseSei:function(bytes){for(var i=0,result={payloadType:-1,payloadSize:0},payloadType=0,payloadSize=0;i<bytes.byteLength&&128!==bytes[i];){for(;255===bytes[i];)payloadType+=255,i++;for(payloadType+=bytes[i++];255===bytes[i];)payloadSize+=255,i++;if(payloadSize+=bytes[i++],!result.payload&&4===payloadType){if("GA94"===String.fromCharCode(bytes[i+3],bytes[i+4],bytes[i+5],bytes[i+6])){result.payloadType=payloadType,result.payloadSize=payloadSize,result.payload=bytes.subarray(i,i+payloadSize);break}result.payload=void 0}i+=payloadSize,payloadType=0,payloadSize=0}return result},parseUserData:function(sei){return 181!==sei.payload[0]||49!=(sei.payload[1]<<8|sei.payload[2])||"GA94"!==String.fromCharCode(sei.payload[3],sei.payload[4],sei.payload[5],sei.payload[6])||3!==sei.payload[7]?null:sei.payload.subarray(8,sei.payload.length-1)},parseCaptionPackets:function(pts,userData){var i,count,offset,data,results=[];if(!(64&userData[0]))return results;for(count=31&userData[0],i=0;i<count;i++)data={type:3&userData[(offset=3*i)+2],pts:pts},4&userData[offset+2]&&(data.ccData=userData[offset+3]<<8|userData[offset+4],results.push(data));return results},discardEmulationPreventionBytes:function(data){for(var newLength,newData,length=data.byteLength,emulationPreventionBytesPositions=[],i=1;i<length-2;)0===data[i]&&0===data[i+1]&&3===data[i+2]?(emulationPreventionBytesPositions.push(i+2),i+=2):i++;if(0===emulationPreventionBytesPositions.length)return data;newLength=length-emulationPreventionBytesPositions.length,newData=new Uint8Array(newLength);var sourceIndex=0;for(i=0;i<newLength;sourceIndex++,i++)sourceIndex===emulationPreventionBytesPositions[0]&&(sourceIndex++,emulationPreventionBytesPositions.shift()),newData[i]=data[sourceIndex];return newData},USER_DATA_REGISTERED_ITU_T_T35:4},Stream$7=stream,cea708Parser=captionPacketParser,CaptionStream$2=function(options){options=options||{},CaptionStream$2.prototype.init.call(this),this.parse708captions_="boolean"!=typeof options.parse708captions||options.parse708captions,this.captionPackets_=[],this.ccStreams_=[new Cea608Stream(0,0),new Cea608Stream(0,1),new Cea608Stream(1,0),new Cea608Stream(1,1)],this.parse708captions_&&(this.cc708Stream_=new Cea708Stream({captionServices:options.captionServices})),this.reset(),this.ccStreams_.forEach((function(cc){cc.on("data",this.trigger.bind(this,"data")),cc.on("partialdone",this.trigger.bind(this,"partialdone")),cc.on("done",this.trigger.bind(this,"done"))}),this),this.parse708captions_&&(this.cc708Stream_.on("data",this.trigger.bind(this,"data")),this.cc708Stream_.on("partialdone",this.trigger.bind(this,"partialdone")),this.cc708Stream_.on("done",this.trigger.bind(this,"done")))};CaptionStream$2.prototype=new Stream$7,CaptionStream$2.prototype.push=function(event){var sei,userData,newCaptionPackets;if("sei_rbsp"===event.nalUnitType&&(sei=cea708Parser.parseSei(event.escapedRBSP)).payload&&sei.payloadType===cea708Parser.USER_DATA_REGISTERED_ITU_T_T35&&(userData=cea708Parser.parseUserData(sei)))if(event.dts<this.latestDts_)this.ignoreNextEqualDts_=!0;else{if(event.dts===this.latestDts_&&this.ignoreNextEqualDts_)return this.numSameDts_--,void(this.numSameDts_||(this.ignoreNextEqualDts_=!1));newCaptionPackets=cea708Parser.parseCaptionPackets(event.pts,userData),this.captionPackets_=this.captionPackets_.concat(newCaptionPackets),this.latestDts_!==event.dts&&(this.numSameDts_=0),this.numSameDts_++,this.latestDts_=event.dts}},CaptionStream$2.prototype.flushCCStreams=function(flushType){this.ccStreams_.forEach((function(cc){return"flush"===flushType?cc.flush():cc.partialFlush()}),this)},CaptionStream$2.prototype.flushStream=function(flushType){this.captionPackets_.length?(this.captionPackets_.forEach((function(elem,idx){elem.presortIndex=idx})),this.captionPackets_.sort((function(a,b){return a.pts===b.pts?a.presortIndex-b.presortIndex:a.pts-b.pts})),this.captionPackets_.forEach((function(packet){packet.type<2?this.dispatchCea608Packet(packet):this.dispatchCea708Packet(packet)}),this),this.captionPackets_.length=0,this.flushCCStreams(flushType)):this.flushCCStreams(flushType)},CaptionStream$2.prototype.flush=function(){return this.flushStream("flush")},CaptionStream$2.prototype.partialFlush=function(){return this.flushStream("partialFlush")},CaptionStream$2.prototype.reset=function(){this.latestDts_=null,this.ignoreNextEqualDts_=!1,this.numSameDts_=0,this.activeCea608Channel_=[null,null],this.ccStreams_.forEach((function(ccStream){ccStream.reset()}))},CaptionStream$2.prototype.dispatchCea608Packet=function(packet){this.setsTextOrXDSActive(packet)?this.activeCea608Channel_[packet.type]=null:this.setsChannel1Active(packet)?this.activeCea608Channel_[packet.type]=0:this.setsChannel2Active(packet)&&(this.activeCea608Channel_[packet.type]=1),null!==this.activeCea608Channel_[packet.type]&&this.ccStreams_[(packet.type<<1)+this.activeCea608Channel_[packet.type]].push(packet)},CaptionStream$2.prototype.setsChannel1Active=function(packet){return 4096==(30720&packet.ccData)},CaptionStream$2.prototype.setsChannel2Active=function(packet){return 6144==(30720&packet.ccData)},CaptionStream$2.prototype.setsTextOrXDSActive=function(packet){return 256==(28928&packet.ccData)||4138==(30974&packet.ccData)||6186==(30974&packet.ccData)},CaptionStream$2.prototype.dispatchCea708Packet=function(packet){this.parse708captions_&&this.cc708Stream_.push(packet)};var CHARACTER_TRANSLATION_708={127:9834,4128:32,4129:160,4133:8230,4138:352,4140:338,4144:9608,4145:8216,4146:8217,4147:8220,4148:8221,4149:8226,4153:8482,4154:353,4156:339,4157:8480,4159:376,4214:8539,4215:8540,4216:8541,4217:8542,4218:9168,4219:9124,4220:9123,4221:9135,4222:9126,4223:9121,4256:12600},within708TextBlock=function(b){return 32<=b&&b<=127||160<=b&&b<=255},Cea708Window=function(windowNum){this.windowNum=windowNum,this.reset()};Cea708Window.prototype.reset=function(){this.clearText(),this.pendingNewLine=!1,this.winAttr={},this.penAttr={},this.penLoc={},this.penColor={},this.visible=0,this.rowLock=0,this.columnLock=0,this.priority=0,this.relativePositioning=0,this.anchorVertical=0,this.anchorHorizontal=0,this.anchorPoint=0,this.rowCount=1,this.virtualRowCount=this.rowCount+1,this.columnCount=41,this.windowStyle=0,this.penStyle=0},Cea708Window.prototype.getText=function(){return this.rows.join("\n")},Cea708Window.prototype.clearText=function(){this.rows=[""],this.rowIdx=0},Cea708Window.prototype.newLine=function(pts){for(this.rows.length>=this.virtualRowCount&&"function"==typeof this.beforeRowOverflow&&this.beforeRowOverflow(pts),this.rows.length>0&&(this.rows.push(""),this.rowIdx++);this.rows.length>this.virtualRowCount;)this.rows.shift(),this.rowIdx--},Cea708Window.prototype.isEmpty=function(){return 0===this.rows.length||1===this.rows.length&&""===this.rows[0]},Cea708Window.prototype.addText=function(text){this.rows[this.rowIdx]+=text},Cea708Window.prototype.backspace=function(){if(!this.isEmpty()){var row=this.rows[this.rowIdx];this.rows[this.rowIdx]=row.substr(0,row.length-1)}};var Cea708Service=function(serviceNum,encoding,stream){this.serviceNum=serviceNum,this.text="",this.currentWindow=new Cea708Window(-1),this.windows=[],this.stream=stream,"string"==typeof encoding&&this.createTextDecoder(encoding)};Cea708Service.prototype.init=function(pts,beforeRowOverflow){this.startPts=pts;for(var win=0;win<8;win++)this.windows[win]=new Cea708Window(win),"function"==typeof beforeRowOverflow&&(this.windows[win].beforeRowOverflow=beforeRowOverflow)},Cea708Service.prototype.setCurrentWindow=function(windowNum){this.currentWindow=this.windows[windowNum]},Cea708Service.prototype.createTextDecoder=function(encoding){if("undefined"==typeof TextDecoder)this.stream.trigger("log",{level:"warn",message:"The `encoding` option is unsupported without TextDecoder support"});else try{this.textDecoder_=new TextDecoder(encoding)}catch(error){this.stream.trigger("log",{level:"warn",message:"TextDecoder could not be created with "+encoding+" encoding. "+error})}};var Cea708Stream=function(options){options=options||{},Cea708Stream.prototype.init.call(this);var serviceProps,self=this,captionServices=options.captionServices||{},captionServiceEncodings={};Object.keys(captionServices).forEach((serviceName=>{serviceProps=captionServices[serviceName],/^SERVICE/.test(serviceName)&&(captionServiceEncodings[serviceName]=serviceProps.encoding)})),this.serviceEncodings=captionServiceEncodings,this.current708Packet=null,this.services={},this.push=function(packet){3===packet.type?(self.new708Packet(),self.add708Bytes(packet)):(null===self.current708Packet&&self.new708Packet(),self.add708Bytes(packet))}};Cea708Stream.prototype=new Stream$7,Cea708Stream.prototype.new708Packet=function(){null!==this.current708Packet&&this.push708Packet(),this.current708Packet={data:[],ptsVals:[]}},Cea708Stream.prototype.add708Bytes=function(packet){var data=packet.ccData,byte0=data>>>8,byte1=255&data;this.current708Packet.ptsVals.push(packet.pts),this.current708Packet.data.push(byte0),this.current708Packet.data.push(byte1)},Cea708Stream.prototype.push708Packet=function(){var packet708=this.current708Packet,packetData=packet708.data,serviceNum=null,blockSize=null,i=0,b=packetData[i++];for(packet708.seq=b>>6,packet708.sizeCode=63&b;i<packetData.length;i++)blockSize=31&(b=packetData[i++]),7===(serviceNum=b>>5)&&blockSize>0&&(serviceNum=b=packetData[i++]),this.pushServiceBlock(serviceNum,i,blockSize),blockSize>0&&(i+=blockSize-1)},Cea708Stream.prototype.pushServiceBlock=function(serviceNum,start,size){var b,i=start,packetData=this.current708Packet.data,service=this.services[serviceNum];for(service||(service=this.initService(serviceNum,i));i<start+size&&i<packetData.length;i++)b=packetData[i],within708TextBlock(b)?i=this.handleText(i,service):24===b?i=this.multiByteCharacter(i,service):16===b?i=this.extendedCommands(i,service):128<=b&&b<=135?i=this.setCurrentWindow(i,service):152<=b&&b<=159?i=this.defineWindow(i,service):136===b?i=this.clearWindows(i,service):140===b?i=this.deleteWindows(i,service):137===b?i=this.displayWindows(i,service):138===b?i=this.hideWindows(i,service):139===b?i=this.toggleWindows(i,service):151===b?i=this.setWindowAttributes(i,service):144===b?i=this.setPenAttributes(i,service):145===b?i=this.setPenColor(i,service):146===b?i=this.setPenLocation(i,service):143===b?service=this.reset(i,service):8===b?service.currentWindow.backspace():12===b?service.currentWindow.clearText():13===b?service.currentWindow.pendingNewLine=!0:14===b?service.currentWindow.clearText():141===b&&i++},Cea708Stream.prototype.extendedCommands=function(i,service){var b=this.current708Packet.data[++i];return within708TextBlock(b)&&(i=this.handleText(i,service,{isExtended:!0})),i},Cea708Stream.prototype.getPts=function(byteIndex){return this.current708Packet.ptsVals[Math.floor(byteIndex/2)]},Cea708Stream.prototype.initService=function(serviceNum,i){var serviceName,encoding,self=this;return(serviceName="SERVICE"+serviceNum)in this.serviceEncodings&&(encoding=this.serviceEncodings[serviceName]),this.services[serviceNum]=new Cea708Service(serviceNum,encoding,self),this.services[serviceNum].init(this.getPts(i),(function(pts){self.flushDisplayed(pts,self.services[serviceNum])})),this.services[serviceNum]},Cea708Stream.prototype.handleText=function(i,service,options){var char,charCodeArray,code,newCode,isExtended=options&&options.isExtended,isMultiByte=options&&options.isMultiByte,packetData=this.current708Packet.data,extended=isExtended?4096:0,currentByte=packetData[i],nextByte=packetData[i+1],win=service.currentWindow;return service.textDecoder_&&!isExtended?(isMultiByte?(charCodeArray=[currentByte,nextByte],i++):charCodeArray=[currentByte],char=service.textDecoder_.decode(new Uint8Array(charCodeArray))):(newCode=CHARACTER_TRANSLATION_708[code=extended|currentByte]||code,char=4096&code&&code===newCode?"":String.fromCharCode(newCode)),win.pendingNewLine&&!win.isEmpty()&&win.newLine(this.getPts(i)),win.pendingNewLine=!1,win.addText(char),i},Cea708Stream.prototype.multiByteCharacter=function(i,service){var packetData=this.current708Packet.data,firstByte=packetData[i+1],secondByte=packetData[i+2];return within708TextBlock(firstByte)&&within708TextBlock(secondByte)&&(i=this.handleText(++i,service,{isMultiByte:!0})),i},Cea708Stream.prototype.setCurrentWindow=function(i,service){var windowNum=7&this.current708Packet.data[i];return service.setCurrentWindow(windowNum),i},Cea708Stream.prototype.defineWindow=function(i,service){var packetData=this.current708Packet.data,b=packetData[i],windowNum=7&b;service.setCurrentWindow(windowNum);var win=service.currentWindow;return b=packetData[++i],win.visible=(32&b)>>5,win.rowLock=(16&b)>>4,win.columnLock=(8&b)>>3,win.priority=7&b,b=packetData[++i],win.relativePositioning=(128&b)>>7,win.anchorVertical=127&b,b=packetData[++i],win.anchorHorizontal=b,b=packetData[++i],win.anchorPoint=(240&b)>>4,win.rowCount=15&b,b=packetData[++i],win.columnCount=63&b,b=packetData[++i],win.windowStyle=(56&b)>>3,win.penStyle=7&b,win.virtualRowCount=win.rowCount+1,i},Cea708Stream.prototype.setWindowAttributes=function(i,service){var packetData=this.current708Packet.data,b=packetData[i],winAttr=service.currentWindow.winAttr;return b=packetData[++i],winAttr.fillOpacity=(192&b)>>6,winAttr.fillRed=(48&b)>>4,winAttr.fillGreen=(12&b)>>2,winAttr.fillBlue=3&b,b=packetData[++i],winAttr.borderType=(192&b)>>6,winAttr.borderRed=(48&b)>>4,winAttr.borderGreen=(12&b)>>2,winAttr.borderBlue=3&b,b=packetData[++i],winAttr.borderType+=(128&b)>>5,winAttr.wordWrap=(64&b)>>6,winAttr.printDirection=(48&b)>>4,winAttr.scrollDirection=(12&b)>>2,winAttr.justify=3&b,b=packetData[++i],winAttr.effectSpeed=(240&b)>>4,winAttr.effectDirection=(12&b)>>2,winAttr.displayEffect=3&b,i},Cea708Stream.prototype.flushDisplayed=function(pts,service){for(var displayedText=[],winId=0;winId<8;winId++)service.windows[winId].visible&&!service.windows[winId].isEmpty()&&displayedText.push(service.windows[winId].getText());service.endPts=pts,service.text=displayedText.join("\n\n"),this.pushCaption(service),service.startPts=pts},Cea708Stream.prototype.pushCaption=function(service){""!==service.text&&(this.trigger("data",{startPts:service.startPts,endPts:service.endPts,text:service.text,stream:"cc708_"+service.serviceNum}),service.text="",service.startPts=service.endPts)},Cea708Stream.prototype.displayWindows=function(i,service){var b=this.current708Packet.data[++i],pts=this.getPts(i);this.flushDisplayed(pts,service);for(var winId=0;winId<8;winId++)b&1<<winId&&(service.windows[winId].visible=1);return i},Cea708Stream.prototype.hideWindows=function(i,service){var b=this.current708Packet.data[++i],pts=this.getPts(i);this.flushDisplayed(pts,service);for(var winId=0;winId<8;winId++)b&1<<winId&&(service.windows[winId].visible=0);return i},Cea708Stream.prototype.toggleWindows=function(i,service){var b=this.current708Packet.data[++i],pts=this.getPts(i);this.flushDisplayed(pts,service);for(var winId=0;winId<8;winId++)b&1<<winId&&(service.windows[winId].visible^=1);return i},Cea708Stream.prototype.clearWindows=function(i,service){var b=this.current708Packet.data[++i],pts=this.getPts(i);this.flushDisplayed(pts,service);for(var winId=0;winId<8;winId++)b&1<<winId&&service.windows[winId].clearText();return i},Cea708Stream.prototype.deleteWindows=function(i,service){var b=this.current708Packet.data[++i],pts=this.getPts(i);this.flushDisplayed(pts,service);for(var winId=0;winId<8;winId++)b&1<<winId&&service.windows[winId].reset();return i},Cea708Stream.prototype.setPenAttributes=function(i,service){var packetData=this.current708Packet.data,b=packetData[i],penAttr=service.currentWindow.penAttr;return b=packetData[++i],penAttr.textTag=(240&b)>>4,penAttr.offset=(12&b)>>2,penAttr.penSize=3&b,b=packetData[++i],penAttr.italics=(128&b)>>7,penAttr.underline=(64&b)>>6,penAttr.edgeType=(56&b)>>3,penAttr.fontStyle=7&b,i},Cea708Stream.prototype.setPenColor=function(i,service){var packetData=this.current708Packet.data,b=packetData[i],penColor=service.currentWindow.penColor;return b=packetData[++i],penColor.fgOpacity=(192&b)>>6,penColor.fgRed=(48&b)>>4,penColor.fgGreen=(12&b)>>2,penColor.fgBlue=3&b,b=packetData[++i],penColor.bgOpacity=(192&b)>>6,penColor.bgRed=(48&b)>>4,penColor.bgGreen=(12&b)>>2,penColor.bgBlue=3&b,b=packetData[++i],penColor.edgeRed=(48&b)>>4,penColor.edgeGreen=(12&b)>>2,penColor.edgeBlue=3&b,i},Cea708Stream.prototype.setPenLocation=function(i,service){var packetData=this.current708Packet.data,b=packetData[i],penLoc=service.currentWindow.penLoc;return service.currentWindow.pendingNewLine=!0,b=packetData[++i],penLoc.row=15&b,b=packetData[++i],penLoc.column=63&b,i},Cea708Stream.prototype.reset=function(i,service){var pts=this.getPts(i);return this.flushDisplayed(pts,service),this.initService(service.serviceNum,i)};var CHARACTER_TRANSLATION={42:225,92:233,94:237,95:243,96:250,123:231,124:247,125:209,126:241,127:9608,304:174,305:176,306:189,307:191,308:8482,309:162,310:163,311:9834,312:224,313:160,314:232,315:226,316:234,317:238,318:244,319:251,544:193,545:201,546:211,547:218,548:220,549:252,550:8216,551:161,552:42,553:39,554:8212,555:169,556:8480,557:8226,558:8220,559:8221,560:192,561:194,562:199,563:200,564:202,565:203,566:235,567:206,568:207,569:239,570:212,571:217,572:249,573:219,574:171,575:187,800:195,801:227,802:205,803:204,804:236,805:210,806:242,807:213,808:245,809:123,810:125,811:92,812:94,813:95,814:124,815:126,816:196,817:228,818:214,819:246,820:223,821:165,822:164,823:9474,824:197,825:229,826:216,827:248,828:9484,829:9488,830:9492,831:9496},getCharFromCode=function(code){return null===code?"":(code=CHARACTER_TRANSLATION[code]||code,String.fromCharCode(code))},ROWS=[4352,4384,4608,4640,5376,5408,5632,5664,5888,5920,4096,4864,4896,5120,5152],createDisplayBuffer=function(){for(var result=[],i=15;i--;)result.push("");return result},Cea608Stream=function(field,dataChannel){Cea608Stream.prototype.init.call(this),this.field_=field||0,this.dataChannel_=dataChannel||0,this.name_="CC"+(1+(this.field_<<1|this.dataChannel_)),this.setConstants(),this.reset(),this.push=function(packet){var data,swap,char0,char1,text;if((data=32639&packet.ccData)!==this.lastControlCode_){if(4096==(61440&data)?this.lastControlCode_=data:data!==this.PADDING_&&(this.lastControlCode_=null),char0=data>>>8,char1=255&data,data!==this.PADDING_)if(data===this.RESUME_CAPTION_LOADING_)this.mode_="popOn";else if(data===this.END_OF_CAPTION_)this.mode_="popOn",this.clearFormatting(packet.pts),this.flushDisplayed(packet.pts),swap=this.displayed_,this.displayed_=this.nonDisplayed_,this.nonDisplayed_=swap,this.startPts_=packet.pts;else if(data===this.ROLL_UP_2_ROWS_)this.rollUpRows_=2,this.setRollUp(packet.pts);else if(data===this.ROLL_UP_3_ROWS_)this.rollUpRows_=3,this.setRollUp(packet.pts);else if(data===this.ROLL_UP_4_ROWS_)this.rollUpRows_=4,this.setRollUp(packet.pts);else if(data===this.CARRIAGE_RETURN_)this.clearFormatting(packet.pts),this.flushDisplayed(packet.pts),this.shiftRowsUp_(),this.startPts_=packet.pts;else if(data===this.BACKSPACE_)"popOn"===this.mode_?this.nonDisplayed_[this.row_]=this.nonDisplayed_[this.row_].slice(0,-1):this.displayed_[this.row_]=this.displayed_[this.row_].slice(0,-1);else if(data===this.ERASE_DISPLAYED_MEMORY_)this.flushDisplayed(packet.pts),this.displayed_=createDisplayBuffer();else if(data===this.ERASE_NON_DISPLAYED_MEMORY_)this.nonDisplayed_=createDisplayBuffer();else if(data===this.RESUME_DIRECT_CAPTIONING_)"paintOn"!==this.mode_&&(this.flushDisplayed(packet.pts),this.displayed_=createDisplayBuffer()),this.mode_="paintOn",this.startPts_=packet.pts;else if(this.isSpecialCharacter(char0,char1))text=getCharFromCode((char0=(3&char0)<<8)|char1),this[this.mode_](packet.pts,text),this.column_++;else if(this.isExtCharacter(char0,char1))"popOn"===this.mode_?this.nonDisplayed_[this.row_]=this.nonDisplayed_[this.row_].slice(0,-1):this.displayed_[this.row_]=this.displayed_[this.row_].slice(0,-1),text=getCharFromCode((char0=(3&char0)<<8)|char1),this[this.mode_](packet.pts,text),this.column_++;else if(this.isMidRowCode(char0,char1))this.clearFormatting(packet.pts),this[this.mode_](packet.pts," "),this.column_++,14==(14&char1)&&this.addFormatting(packet.pts,["i"]),1==(1&char1)&&this.addFormatting(packet.pts,["u"]);else if(this.isOffsetControlCode(char0,char1))this.column_+=3&char1;else if(this.isPAC(char0,char1)){var row=ROWS.indexOf(7968&data);"rollUp"===this.mode_&&(row-this.rollUpRows_+1<0&&(row=this.rollUpRows_-1),this.setRollUp(packet.pts,row)),row!==this.row_&&(this.clearFormatting(packet.pts),this.row_=row),1&char1&&-1===this.formatting_.indexOf("u")&&this.addFormatting(packet.pts,["u"]),16==(16&data)&&(this.column_=4*((14&data)>>1)),this.isColorPAC(char1)&&14==(14&char1)&&this.addFormatting(packet.pts,["i"])}else this.isNormalChar(char0)&&(0===char1&&(char1=null),text=getCharFromCode(char0),text+=getCharFromCode(char1),this[this.mode_](packet.pts,text),this.column_+=text.length)}else this.lastControlCode_=null}};Cea608Stream.prototype=new Stream$7,Cea608Stream.prototype.flushDisplayed=function(pts){var content=this.displayed_.map((function(row,index){try{return row.trim()}catch(e){return this.trigger("log",{level:"warn",message:"Skipping a malformed 608 caption at index "+index+"."}),""}}),this).join("\n").replace(/^\n+|\n+$/g,"");content.length&&this.trigger("data",{startPts:this.startPts_,endPts:pts,text:content,stream:this.name_})},Cea608Stream.prototype.reset=function(){this.mode_="popOn",this.topRow_=0,this.startPts_=0,this.displayed_=createDisplayBuffer(),this.nonDisplayed_=createDisplayBuffer(),this.lastControlCode_=null,this.column_=0,this.row_=14,this.rollUpRows_=2,this.formatting_=[]},Cea608Stream.prototype.setConstants=function(){0===this.dataChannel_?(this.BASE_=16,this.EXT_=17,this.CONTROL_=(20|this.field_)<<8,this.OFFSET_=23):1===this.dataChannel_&&(this.BASE_=24,this.EXT_=25,this.CONTROL_=(28|this.field_)<<8,this.OFFSET_=31),this.PADDING_=0,this.RESUME_CAPTION_LOADING_=32|this.CONTROL_,this.END_OF_CAPTION_=47|this.CONTROL_,this.ROLL_UP_2_ROWS_=37|this.CONTROL_,this.ROLL_UP_3_ROWS_=38|this.CONTROL_,this.ROLL_UP_4_ROWS_=39|this.CONTROL_,this.CARRIAGE_RETURN_=45|this.CONTROL_,this.RESUME_DIRECT_CAPTIONING_=41|this.CONTROL_,this.BACKSPACE_=33|this.CONTROL_,this.ERASE_DISPLAYED_MEMORY_=44|this.CONTROL_,this.ERASE_NON_DISPLAYED_MEMORY_=46|this.CONTROL_},Cea608Stream.prototype.isSpecialCharacter=function(char0,char1){return char0===this.EXT_&&char1>=48&&char1<=63},Cea608Stream.prototype.isExtCharacter=function(char0,char1){return(char0===this.EXT_+1||char0===this.EXT_+2)&&char1>=32&&char1<=63},Cea608Stream.prototype.isMidRowCode=function(char0,char1){return char0===this.EXT_&&char1>=32&&char1<=47},Cea608Stream.prototype.isOffsetControlCode=function(char0,char1){return char0===this.OFFSET_&&char1>=33&&char1<=35},Cea608Stream.prototype.isPAC=function(char0,char1){return char0>=this.BASE_&&char0<this.BASE_+8&&char1>=64&&char1<=127},Cea608Stream.prototype.isColorPAC=function(char1){return char1>=64&&char1<=79||char1>=96&&char1<=127},Cea608Stream.prototype.isNormalChar=function(char){return char>=32&&char<=127},Cea608Stream.prototype.setRollUp=function(pts,newBaseRow){if("rollUp"!==this.mode_&&(this.row_=14,this.mode_="rollUp",this.flushDisplayed(pts),this.nonDisplayed_=createDisplayBuffer(),this.displayed_=createDisplayBuffer()),void 0!==newBaseRow&&newBaseRow!==this.row_)for(var i=0;i<this.rollUpRows_;i++)this.displayed_[newBaseRow-i]=this.displayed_[this.row_-i],this.displayed_[this.row_-i]="";void 0===newBaseRow&&(newBaseRow=this.row_),this.topRow_=newBaseRow-this.rollUpRows_+1},Cea608Stream.prototype.addFormatting=function(pts,format){this.formatting_=this.formatting_.concat(format);var text=format.reduce((function(text,format){return text+"<"+format+">"}),"");this[this.mode_](pts,text)},Cea608Stream.prototype.clearFormatting=function(pts){if(this.formatting_.length){var text=this.formatting_.reverse().reduce((function(text,format){return text+"</"+format+">"}),"");this.formatting_=[],this[this.mode_](pts,text)}},Cea608Stream.prototype.popOn=function(pts,text){var baseRow=this.nonDisplayed_[this.row_];baseRow+=text,this.nonDisplayed_[this.row_]=baseRow},Cea608Stream.prototype.rollUp=function(pts,text){var baseRow=this.displayed_[this.row_];baseRow+=text,this.displayed_[this.row_]=baseRow},Cea608Stream.prototype.shiftRowsUp_=function(){var i;for(i=0;i<this.topRow_;i++)this.displayed_[i]="";for(i=this.row_+1;i<15;i++)this.displayed_[i]="";for(i=this.topRow_;i<this.row_;i++)this.displayed_[i]=this.displayed_[i+1];this.displayed_[this.row_]=""},Cea608Stream.prototype.paintOn=function(pts,text){var baseRow=this.displayed_[this.row_];baseRow+=text,this.displayed_[this.row_]=baseRow};var captionStream={CaptionStream:CaptionStream$2,Cea608Stream:Cea608Stream,Cea708Stream:Cea708Stream},streamTypes={H264_STREAM_TYPE:27,ADTS_STREAM_TYPE:15,METADATA_STREAM_TYPE:21},Stream$6=stream,handleRollover$1=function(value,reference){var direction=1;for(value>reference&&(direction=-1);Math.abs(reference-value)>4294967296;)value+=8589934592*direction;return value},TimestampRolloverStream$1=function(type){var lastDTS,referenceDTS;TimestampRolloverStream$1.prototype.init.call(this),this.type_=type||"shared",this.push=function(data){"shared"!==this.type_&&data.type!==this.type_||(void 0===referenceDTS&&(referenceDTS=data.dts),data.dts=handleRollover$1(data.dts,referenceDTS),data.pts=handleRollover$1(data.pts,referenceDTS),lastDTS=data.dts,this.trigger("data",data))},this.flush=function(){referenceDTS=lastDTS,this.trigger("done")},this.endTimeline=function(){this.flush(),this.trigger("endedtimeline")},this.discontinuity=function(){referenceDTS=void 0,lastDTS=void 0},this.reset=function(){this.discontinuity(),this.trigger("reset")}};TimestampRolloverStream$1.prototype=new Stream$6;var MetadataStream,timestampRolloverStream={TimestampRolloverStream:TimestampRolloverStream$1,handleRollover:handleRollover$1},typedArray_typedArrayIndexOf=(typedArray,element,fromIndex)=>{if(!typedArray)return-1;for(var currentIndex=fromIndex;currentIndex<typedArray.length;currentIndex++)if(typedArray[currentIndex]===element)return currentIndex;return-1},typedArrayIndexOf=typedArray_typedArrayIndexOf,textEncodingDescriptionByte_Utf8=3,percentEncode$1=function(bytes,start,end){var i,result="";for(i=start;i<end;i++)result+="%"+("00"+bytes[i].toString(16)).slice(-2);return result},parseUtf8=function(bytes,start,end){return decodeURIComponent(percentEncode$1(bytes,start,end))},parseIso88591$1=function(bytes,start,end){return unescape(percentEncode$1(bytes,start,end))},parseSyncSafeInteger$1=function(data){return data[0]<<21|data[1]<<14|data[2]<<7|data[3]},frameParsers={APIC:function(frame){var mimeTypeEndIndex,descriptionEndIndex,i=1;frame.data[0]===textEncodingDescriptionByte_Utf8&&((mimeTypeEndIndex=typedArrayIndexOf(frame.data,0,i))<0||(frame.mimeType=parseIso88591$1(frame.data,i,mimeTypeEndIndex),i=mimeTypeEndIndex+1,frame.pictureType=frame.data[i],i++,(descriptionEndIndex=typedArrayIndexOf(frame.data,0,i))<0||(frame.description=parseUtf8(frame.data,i,descriptionEndIndex),i=descriptionEndIndex+1,"--\x3e"===frame.mimeType?frame.url=parseIso88591$1(frame.data,i,frame.data.length):frame.pictureData=frame.data.subarray(i,frame.data.length))))},"T*":function(frame){frame.data[0]===textEncodingDescriptionByte_Utf8&&(frame.value=parseUtf8(frame.data,1,frame.data.length).replace(/\0*$/,""),frame.values=frame.value.split("\0"))},TXXX:function(frame){var descriptionEndIndex;frame.data[0]===textEncodingDescriptionByte_Utf8&&-1!==(descriptionEndIndex=typedArrayIndexOf(frame.data,0,1))&&(frame.description=parseUtf8(frame.data,1,descriptionEndIndex),frame.value=parseUtf8(frame.data,descriptionEndIndex+1,frame.data.length).replace(/\0*$/,""),frame.data=frame.value)},"W*":function(frame){frame.url=parseIso88591$1(frame.data,0,frame.data.length).replace(/\0.*$/,"")},WXXX:function(frame){var descriptionEndIndex;frame.data[0]===textEncodingDescriptionByte_Utf8&&-1!==(descriptionEndIndex=typedArrayIndexOf(frame.data,0,1))&&(frame.description=parseUtf8(frame.data,1,descriptionEndIndex),frame.url=parseIso88591$1(frame.data,descriptionEndIndex+1,frame.data.length).replace(/\0.*$/,""))},PRIV:function(frame){var i;for(i=0;i<frame.data.length;i++)if(0===frame.data[i]){frame.owner=parseIso88591$1(frame.data,0,i);break}frame.privateData=frame.data.subarray(i+1),frame.data=frame.privateData}},parseId3={parseId3Frames:function(data){var frameSize,frameStart=10,tagSize=0,frames=[];if(!(data.length<10||data[0]!=="I".charCodeAt(0)||data[1]!=="D".charCodeAt(0)||data[2]!=="3".charCodeAt(0))){tagSize=parseSyncSafeInteger$1(data.subarray(6,10)),tagSize+=10,64&data[5]&&(frameStart+=4,frameStart+=parseSyncSafeInteger$1(data.subarray(10,14)),tagSize-=parseSyncSafeInteger$1(data.subarray(16,20)));do{if((frameSize=parseSyncSafeInteger$1(data.subarray(frameStart+4,frameStart+8)))<1)break;var frame={id:String.fromCharCode(data[frameStart],data[frameStart+1],data[frameStart+2],data[frameStart+3]),data:data.subarray(frameStart+10,frameStart+frameSize+10)};frame.key=frame.id,frameParsers[frame.id]?frameParsers[frame.id](frame):"T"===frame.id[0]?frameParsers["T*"](frame):"W"===frame.id[0]&&frameParsers["W*"](frame),frames.push(frame),frameStart+=10,frameStart+=frameSize}while(frameStart<tagSize);return frames}},parseSyncSafeInteger:parseSyncSafeInteger$1,frameParsers:frameParsers},StreamTypes$3=streamTypes,id3=parseId3;(MetadataStream=function(options){var i,settings={descriptor:options&&options.descriptor},tagSize=0,buffer=[],bufferSize=0;if(MetadataStream.prototype.init.call(this),this.dispatchType=StreamTypes$3.METADATA_STREAM_TYPE.toString(16),settings.descriptor)for(i=0;i<settings.descriptor.length;i++)this.dispatchType+=("00"+settings.descriptor[i].toString(16)).slice(-2);this.push=function(chunk){var tag,frameStart,frameSize,frame,i;if("timed-metadata"===chunk.type)if(chunk.dataAlignmentIndicator&&(bufferSize=0,buffer.length=0),0===buffer.length&&(chunk.data.length<10||chunk.data[0]!=="I".charCodeAt(0)||chunk.data[1]!=="D".charCodeAt(0)||chunk.data[2]!=="3".charCodeAt(0)))this.trigger("log",{level:"warn",message:"Skipping unrecognized metadata packet"});else if(buffer.push(chunk),bufferSize+=chunk.data.byteLength,1===buffer.length&&(tagSize=id3.parseSyncSafeInteger(chunk.data.subarray(6,10)),tagSize+=10),!(bufferSize<tagSize)){for(tag={data:new Uint8Array(tagSize),frames:[],pts:buffer[0].pts,dts:buffer[0].dts},i=0;i<tagSize;)tag.data.set(buffer[0].data.subarray(0,tagSize-i),i),i+=buffer[0].data.byteLength,bufferSize-=buffer[0].data.byteLength,buffer.shift();frameStart=10,64&tag.data[5]&&(frameStart+=4,frameStart+=id3.parseSyncSafeInteger(tag.data.subarray(10,14)),tagSize-=id3.parseSyncSafeInteger(tag.data.subarray(16,20)));do{if((frameSize=id3.parseSyncSafeInteger(tag.data.subarray(frameStart+4,frameStart+8)))<1){this.trigger("log",{level:"warn",message:"Malformed ID3 frame encountered. Skipping remaining metadata parsing."});break}if((frame={id:String.fromCharCode(tag.data[frameStart],tag.data[frameStart+1],tag.data[frameStart+2],tag.data[frameStart+3]),data:tag.data.subarray(frameStart+10,frameStart+frameSize+10)}).key=frame.id,id3.frameParsers[frame.id]?id3.frameParsers[frame.id](frame):"T"===frame.id[0]?id3.frameParsers["T*"](frame):"W"===frame.id[0]&&id3.frameParsers["W*"](frame),"com.apple.streaming.transportStreamTimestamp"===frame.owner){var d=frame.data,size=(1&d[3])<<30|d[4]<<22|d[5]<<14|d[6]<<6|d[7]>>>2;size*=4,size+=3&d[7],frame.timeStamp=size,void 0===tag.pts&&void 0===tag.dts&&(tag.pts=frame.timeStamp,tag.dts=frame.timeStamp),this.trigger("timestamp",frame)}tag.frames.push(frame),frameStart+=10,frameStart+=frameSize}while(frameStart<tagSize);this.trigger("data",tag)}}}).prototype=new stream;var TransportPacketStream,TransportParseStream,ElementaryStream,metadataStream=MetadataStream,Stream$4=stream,CaptionStream$1=captionStream,StreamTypes$2=streamTypes,TimestampRolloverStream=timestampRolloverStream.TimestampRolloverStream;(TransportPacketStream=function(){var buffer=new Uint8Array(188),bytesInBuffer=0;TransportPacketStream.prototype.init.call(this),this.push=function(bytes){var everything,startIndex=0,endIndex=188;for(bytesInBuffer?((everything=new Uint8Array(bytes.byteLength+bytesInBuffer)).set(buffer.subarray(0,bytesInBuffer)),everything.set(bytes,bytesInBuffer),bytesInBuffer=0):everything=bytes;endIndex<everything.byteLength;)71!==everything[startIndex]||71!==everything[endIndex]?(startIndex++,endIndex++):(this.trigger("data",everything.subarray(startIndex,endIndex)),startIndex+=188,endIndex+=188);startIndex<everything.byteLength&&(buffer.set(everything.subarray(startIndex),0),bytesInBuffer=everything.byteLength-startIndex)},this.flush=function(){188===bytesInBuffer&&71===buffer[0]&&(this.trigger("data",buffer),bytesInBuffer=0),this.trigger("done")},this.endTimeline=function(){this.flush(),this.trigger("endedtimeline")},this.reset=function(){bytesInBuffer=0,this.trigger("reset")}}).prototype=new Stream$4,TransportParseStream=function(){var parsePsi,parsePat,parsePmt,self;TransportParseStream.prototype.init.call(this),self=this,this.packetsWaitingForPmt=[],this.programMapTable=void 0,parsePsi=function(payload,psi){var offset=0;psi.payloadUnitStartIndicator&&(offset+=payload[offset]+1),"pat"===psi.type?parsePat(payload.subarray(offset),psi):parsePmt(payload.subarray(offset),psi)},parsePat=function(payload,pat){pat.section_number=payload[7],pat.last_section_number=payload[8],self.pmtPid=(31&payload[10])<<8|payload[11],pat.pmtPid=self.pmtPid},parsePmt=function(payload,pmt){var tableEnd,offset;if(1&payload[5]){for(self.programMapTable={video:null,audio:null,"timed-metadata":{}},tableEnd=3+((15&payload[1])<<8|payload[2])-4,offset=12+((15&payload[10])<<8|payload[11]);offset<tableEnd;){var streamType=payload[offset],pid=(31&payload[offset+1])<<8|payload[offset+2];streamType===StreamTypes$2.H264_STREAM_TYPE&&null===self.programMapTable.video?self.programMapTable.video=pid:streamType===StreamTypes$2.ADTS_STREAM_TYPE&&null===self.programMapTable.audio?self.programMapTable.audio=pid:streamType===StreamTypes$2.METADATA_STREAM_TYPE&&(self.programMapTable["timed-metadata"][pid]=streamType),offset+=5+((15&payload[offset+3])<<8|payload[offset+4])}pmt.programMapTable=self.programMapTable}},this.push=function(packet){var result={},offset=4;if(result.payloadUnitStartIndicator=!!(64&packet[1]),result.pid=31&packet[1],result.pid<<=8,result.pid|=packet[2],(48&packet[3])>>>4>1&&(offset+=packet[offset]+1),0===result.pid)result.type="pat",parsePsi(packet.subarray(offset),result),this.trigger("data",result);else if(result.pid===this.pmtPid)for(result.type="pmt",parsePsi(packet.subarray(offset),result),this.trigger("data",result);this.packetsWaitingForPmt.length;)this.processPes_.apply(this,this.packetsWaitingForPmt.shift());else void 0===this.programMapTable?this.packetsWaitingForPmt.push([packet,offset,result]):this.processPes_(packet,offset,result)},this.processPes_=function(packet,offset,result){result.pid===this.programMapTable.video?result.streamType=StreamTypes$2.H264_STREAM_TYPE:result.pid===this.programMapTable.audio?result.streamType=StreamTypes$2.ADTS_STREAM_TYPE:result.streamType=this.programMapTable["timed-metadata"][result.pid],result.type="pes",result.data=packet.subarray(offset),this.trigger("data",result)}},TransportParseStream.prototype=new Stream$4,TransportParseStream.STREAM_TYPES={h264:27,adts:15},ElementaryStream=function(){var programMapTable,self=this,segmentHadPmt=!1,video={data:[],size:0},audio={data:[],size:0},timedMetadata={data:[],size:0},flushStream=function(stream,type,forceFlush){var packetFlushable,fragment,packetData=new Uint8Array(stream.size),event={type:type},i=0,offset=0;if(stream.data.length&&!(stream.size<9)){for(event.trackId=stream.data[0].pid,i=0;i<stream.data.length;i++)fragment=stream.data[i],packetData.set(fragment.data,offset),offset+=fragment.data.byteLength;!function(payload,pes){var ptsDtsFlags;const startPrefix=payload[0]<<16|payload[1]<<8|payload[2];pes.data=new Uint8Array,1===startPrefix&&(pes.packetLength=6+(payload[4]<<8|payload[5]),pes.dataAlignmentIndicator=0!=(4&payload[6]),192&(ptsDtsFlags=payload[7])&&(pes.pts=(14&payload[9])<<27|(255&payload[10])<<20|(254&payload[11])<<12|(255&payload[12])<<5|(254&payload[13])>>>3,pes.pts*=4,pes.pts+=(6&payload[13])>>>1,pes.dts=pes.pts,64&ptsDtsFlags&&(pes.dts=(14&payload[14])<<27|(255&payload[15])<<20|(254&payload[16])<<12|(255&payload[17])<<5|(254&payload[18])>>>3,pes.dts*=4,pes.dts+=(6&payload[18])>>>1)),pes.data=payload.subarray(9+payload[8]))}(packetData,event),packetFlushable="video"===type||event.packetLength<=stream.size,(forceFlush||packetFlushable)&&(stream.size=0,stream.data.length=0),packetFlushable&&self.trigger("data",event)}};ElementaryStream.prototype.init.call(this),this.push=function(data){({pat:function(){},pes:function(){var stream,streamType;switch(data.streamType){case StreamTypes$2.H264_STREAM_TYPE:stream=video,streamType="video";break;case StreamTypes$2.ADTS_STREAM_TYPE:stream=audio,streamType="audio";break;case StreamTypes$2.METADATA_STREAM_TYPE:stream=timedMetadata,streamType="timed-metadata";break;default:return}data.payloadUnitStartIndicator&&flushStream(stream,streamType,!0),stream.data.push(data),stream.size+=data.data.byteLength},pmt:function(){var event={type:"metadata",tracks:[]};null!==(programMapTable=data.programMapTable).video&&event.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+programMapTable.video,codec:"avc",type:"video"}),null!==programMapTable.audio&&event.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+programMapTable.audio,codec:"adts",type:"audio"}),segmentHadPmt=!0,self.trigger("data",event)}})[data.type]()},this.reset=function(){video.size=0,video.data.length=0,audio.size=0,audio.data.length=0,this.trigger("reset")},this.flushStreams_=function(){flushStream(video,"video"),flushStream(audio,"audio"),flushStream(timedMetadata,"timed-metadata")},this.flush=function(){if(!segmentHadPmt&&programMapTable){var pmt={type:"metadata",tracks:[]};null!==programMapTable.video&&pmt.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+programMapTable.video,codec:"avc",type:"video"}),null!==programMapTable.audio&&pmt.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+programMapTable.audio,codec:"adts",type:"audio"}),self.trigger("data",pmt)}segmentHadPmt=!1,this.flushStreams_(),this.trigger("done")}},ElementaryStream.prototype=new Stream$4;var m2ts$1={PAT_PID:0,MP2T_PACKET_LENGTH:188,TransportPacketStream:TransportPacketStream,TransportParseStream:TransportParseStream,ElementaryStream:ElementaryStream,TimestampRolloverStream:TimestampRolloverStream,CaptionStream:CaptionStream$1.CaptionStream,Cea608Stream:CaptionStream$1.Cea608Stream,Cea708Stream:CaptionStream$1.Cea708Stream,MetadataStream:metadataStream};for(var type in StreamTypes$2)StreamTypes$2.hasOwnProperty(type)&&(m2ts$1[type]=StreamTypes$2[type]);var AdtsStream$1,m2ts_1=m2ts$1,ONE_SECOND_IN_TS$2=clock$2.ONE_SECOND_IN_TS,ADTS_SAMPLING_FREQUENCIES$1=[96e3,88200,64e3,48e3,44100,32e3,24e3,22050,16e3,12e3,11025,8e3,7350];(AdtsStream$1=function(handlePartialSegments){var buffer,frameNum=0;AdtsStream$1.prototype.init.call(this),this.skipWarn_=function(start,end){this.trigger("log",{level:"warn",message:"adts skiping bytes ".concat(start," to ").concat(end," in frame ").concat(frameNum," outside syncword")})},this.push=function(packet){var frameLength,protectionSkipBytes,oldBuffer,sampleCount,adtsFrameDuration,i=0;if(handlePartialSegments||(frameNum=0),"audio"===packet.type){var skip;for(buffer&&buffer.length?(oldBuffer=buffer,(buffer=new Uint8Array(oldBuffer.byteLength+packet.data.byteLength)).set(oldBuffer),buffer.set(packet.data,oldBuffer.byteLength)):buffer=packet.data;i+7<buffer.length;)if(255===buffer[i]&&240==(246&buffer[i+1])){if("number"==typeof skip&&(this.skipWarn_(skip,i),skip=null),protectionSkipBytes=2*(1&~buffer[i+1]),frameLength=(3&buffer[i+3])<<11|buffer[i+4]<<3|(224&buffer[i+5])>>5,adtsFrameDuration=(sampleCount=1024*(1+(3&buffer[i+6])))*ONE_SECOND_IN_TS$2/ADTS_SAMPLING_FREQUENCIES$1[(60&buffer[i+2])>>>2],buffer.byteLength-i<frameLength)break;this.trigger("data",{pts:packet.pts+frameNum*adtsFrameDuration,dts:packet.dts+frameNum*adtsFrameDuration,sampleCount:sampleCount,audioobjecttype:1+(buffer[i+2]>>>6&3),channelcount:(1&buffer[i+2])<<2|(192&buffer[i+3])>>>6,samplerate:ADTS_SAMPLING_FREQUENCIES$1[(60&buffer[i+2])>>>2],samplingfrequencyindex:(60&buffer[i+2])>>>2,samplesize:16,data:buffer.subarray(i+7+protectionSkipBytes,i+frameLength)}),frameNum++,i+=frameLength}else"number"!=typeof skip&&(skip=i),i++;"number"==typeof skip&&(this.skipWarn_(skip,i),skip=null),buffer=buffer.subarray(i)}},this.flush=function(){frameNum=0,this.trigger("done")},this.reset=function(){buffer=void 0,this.trigger("reset")},this.endTimeline=function(){buffer=void 0,this.trigger("endedtimeline")}}).prototype=new stream;var ExpGolomb$1,adts=AdtsStream$1;ExpGolomb$1=function(workingData){var workingBytesAvailable=workingData.byteLength,workingWord=0,workingBitsAvailable=0;this.length=function(){return 8*workingBytesAvailable},this.bitsAvailable=function(){return 8*workingBytesAvailable+workingBitsAvailable},this.loadWord=function(){var position=workingData.byteLength-workingBytesAvailable,workingBytes=new Uint8Array(4),availableBytes=Math.min(4,workingBytesAvailable);if(0===availableBytes)throw new Error("no bytes available");workingBytes.set(workingData.subarray(position,position+availableBytes)),workingWord=new DataView(workingBytes.buffer).getUint32(0),workingBitsAvailable=8*availableBytes,workingBytesAvailable-=availableBytes},this.skipBits=function(count){var skipBytes;workingBitsAvailable>count?(workingWord<<=count,workingBitsAvailable-=count):(count-=workingBitsAvailable,count-=8*(skipBytes=Math.floor(count/8)),workingBytesAvailable-=skipBytes,this.loadWord(),workingWord<<=count,workingBitsAvailable-=count)},this.readBits=function(size){var bits=Math.min(workingBitsAvailable,size),valu=workingWord>>>32-bits;return(workingBitsAvailable-=bits)>0?workingWord<<=bits:workingBytesAvailable>0&&this.loadWord(),(bits=size-bits)>0?valu<<bits|this.readBits(bits):valu},this.skipLeadingZeros=function(){var leadingZeroCount;for(leadingZeroCount=0;leadingZeroCount<workingBitsAvailable;++leadingZeroCount)if(0!=(workingWord&2147483648>>>leadingZeroCount))return workingWord<<=leadingZeroCount,workingBitsAvailable-=leadingZeroCount,leadingZeroCount;return this.loadWord(),leadingZeroCount+this.skipLeadingZeros()},this.skipUnsignedExpGolomb=function(){this.skipBits(1+this.skipLeadingZeros())},this.skipExpGolomb=function(){this.skipBits(1+this.skipLeadingZeros())},this.readUnsignedExpGolomb=function(){var clz=this.skipLeadingZeros();return this.readBits(clz+1)-1},this.readExpGolomb=function(){var valu=this.readUnsignedExpGolomb();return 1&valu?1+valu>>>1:-1*(valu>>>1)},this.readBoolean=function(){return 1===this.readBits(1)},this.readUnsignedByte=function(){return this.readBits(8)},this.loadWord()};var H264Stream$1,NalByteStream,PROFILES_WITH_OPTIONAL_SPS_DATA,Stream$2=stream,ExpGolomb=ExpGolomb$1;(NalByteStream=function(){var i,buffer,syncPoint=0;NalByteStream.prototype.init.call(this),this.push=function(data){var swapBuffer;buffer?((swapBuffer=new Uint8Array(buffer.byteLength+data.data.byteLength)).set(buffer),swapBuffer.set(data.data,buffer.byteLength),buffer=swapBuffer):buffer=data.data;for(var len=buffer.byteLength;syncPoint<len-3;syncPoint++)if(1===buffer[syncPoint+2]){i=syncPoint+5;break}for(;i<len;)switch(buffer[i]){case 0:if(0!==buffer[i-1]){i+=2;break}if(0!==buffer[i-2]){i++;break}syncPoint+3!==i-2&&this.trigger("data",buffer.subarray(syncPoint+3,i-2));do{i++}while(1!==buffer[i]&&i<len);syncPoint=i-2,i+=3;break;case 1:if(0!==buffer[i-1]||0!==buffer[i-2]){i+=3;break}this.trigger("data",buffer.subarray(syncPoint+3,i-2)),syncPoint=i-2,i+=3;break;default:i+=3}buffer=buffer.subarray(syncPoint),i-=syncPoint,syncPoint=0},this.reset=function(){buffer=null,syncPoint=0,this.trigger("reset")},this.flush=function(){buffer&&buffer.byteLength>3&&this.trigger("data",buffer.subarray(syncPoint+3)),buffer=null,syncPoint=0,this.trigger("done")},this.endTimeline=function(){this.flush(),this.trigger("endedtimeline")}}).prototype=new Stream$2,PROFILES_WITH_OPTIONAL_SPS_DATA={100:!0,110:!0,122:!0,244:!0,44:!0,83:!0,86:!0,118:!0,128:!0,138:!0,139:!0,134:!0},H264Stream$1=function(){var self,trackId,currentPts,currentDts,discardEmulationPreventionBytes,readSequenceParameterSet,skipScalingList,nalByteStream=new NalByteStream;H264Stream$1.prototype.init.call(this),self=this,this.push=function(packet){"video"===packet.type&&(trackId=packet.trackId,currentPts=packet.pts,currentDts=packet.dts,nalByteStream.push(packet))},nalByteStream.on("data",(function(data){var event={trackId:trackId,pts:currentPts,dts:currentDts,data:data,nalUnitTypeCode:31&data[0]};switch(event.nalUnitTypeCode){case 5:event.nalUnitType="slice_layer_without_partitioning_rbsp_idr";break;case 6:event.nalUnitType="sei_rbsp",event.escapedRBSP=discardEmulationPreventionBytes(data.subarray(1));break;case 7:event.nalUnitType="seq_parameter_set_rbsp",event.escapedRBSP=discardEmulationPreventionBytes(data.subarray(1)),event.config=readSequenceParameterSet(event.escapedRBSP);break;case 8:event.nalUnitType="pic_parameter_set_rbsp";break;case 9:event.nalUnitType="access_unit_delimiter_rbsp"}self.trigger("data",event)})),nalByteStream.on("done",(function(){self.trigger("done")})),nalByteStream.on("partialdone",(function(){self.trigger("partialdone")})),nalByteStream.on("reset",(function(){self.trigger("reset")})),nalByteStream.on("endedtimeline",(function(){self.trigger("endedtimeline")})),this.flush=function(){nalByteStream.flush()},this.partialFlush=function(){nalByteStream.partialFlush()},this.reset=function(){nalByteStream.reset()},this.endTimeline=function(){nalByteStream.endTimeline()},skipScalingList=function(count,expGolombDecoder){var j,lastScale=8,nextScale=8;for(j=0;j<count;j++)0!==nextScale&&(nextScale=(lastScale+expGolombDecoder.readExpGolomb()+256)%256),lastScale=0===nextScale?lastScale:nextScale},discardEmulationPreventionBytes=function(data){for(var newLength,newData,length=data.byteLength,emulationPreventionBytesPositions=[],i=1;i<length-2;)0===data[i]&&0===data[i+1]&&3===data[i+2]?(emulationPreventionBytesPositions.push(i+2),i+=2):i++;if(0===emulationPreventionBytesPositions.length)return data;newLength=length-emulationPreventionBytesPositions.length,newData=new Uint8Array(newLength);var sourceIndex=0;for(i=0;i<newLength;sourceIndex++,i++)sourceIndex===emulationPreventionBytesPositions[0]&&(sourceIndex++,emulationPreventionBytesPositions.shift()),newData[i]=data[sourceIndex];return newData},readSequenceParameterSet=function(data){var expGolombDecoder,profileIdc,levelIdc,profileCompatibility,chromaFormatIdc,picOrderCntType,numRefFramesInPicOrderCntCycle,picWidthInMbsMinus1,picHeightInMapUnitsMinus1,frameMbsOnlyFlag,scalingListCount,i,frameCropLeftOffset=0,frameCropRightOffset=0,frameCropTopOffset=0,frameCropBottomOffset=0,sarRatio=[1,1];if(profileIdc=(expGolombDecoder=new ExpGolomb(data)).readUnsignedByte(),profileCompatibility=expGolombDecoder.readUnsignedByte(),levelIdc=expGolombDecoder.readUnsignedByte(),expGolombDecoder.skipUnsignedExpGolomb(),PROFILES_WITH_OPTIONAL_SPS_DATA[profileIdc]&&(3===(chromaFormatIdc=expGolombDecoder.readUnsignedExpGolomb())&&expGolombDecoder.skipBits(1),expGolombDecoder.skipUnsignedExpGolomb(),expGolombDecoder.skipUnsignedExpGolomb(),expGolombDecoder.skipBits(1),expGolombDecoder.readBoolean()))for(scalingListCount=3!==chromaFormatIdc?8:12,i=0;i<scalingListCount;i++)expGolombDecoder.readBoolean()&&skipScalingList(i<6?16:64,expGolombDecoder);if(expGolombDecoder.skipUnsignedExpGolomb(),0===(picOrderCntType=expGolombDecoder.readUnsignedExpGolomb()))expGolombDecoder.readUnsignedExpGolomb();else if(1===picOrderCntType)for(expGolombDecoder.skipBits(1),expGolombDecoder.skipExpGolomb(),expGolombDecoder.skipExpGolomb(),numRefFramesInPicOrderCntCycle=expGolombDecoder.readUnsignedExpGolomb(),i=0;i<numRefFramesInPicOrderCntCycle;i++)expGolombDecoder.skipExpGolomb();if(expGolombDecoder.skipUnsignedExpGolomb(),expGolombDecoder.skipBits(1),picWidthInMbsMinus1=expGolombDecoder.readUnsignedExpGolomb(),picHeightInMapUnitsMinus1=expGolombDecoder.readUnsignedExpGolomb(),0===(frameMbsOnlyFlag=expGolombDecoder.readBits(1))&&expGolombDecoder.skipBits(1),expGolombDecoder.skipBits(1),expGolombDecoder.readBoolean()&&(frameCropLeftOffset=expGolombDecoder.readUnsignedExpGolomb(),frameCropRightOffset=expGolombDecoder.readUnsignedExpGolomb(),frameCropTopOffset=expGolombDecoder.readUnsignedExpGolomb(),frameCropBottomOffset=expGolombDecoder.readUnsignedExpGolomb()),expGolombDecoder.readBoolean()&&expGolombDecoder.readBoolean()){switch(expGolombDecoder.readUnsignedByte()){case 1:sarRatio=[1,1];break;case 2:sarRatio=[12,11];break;case 3:sarRatio=[10,11];break;case 4:sarRatio=[16,11];break;case 5:sarRatio=[40,33];break;case 6:sarRatio=[24,11];break;case 7:sarRatio=[20,11];break;case 8:sarRatio=[32,11];break;case 9:sarRatio=[80,33];break;case 10:sarRatio=[18,11];break;case 11:sarRatio=[15,11];break;case 12:sarRatio=[64,33];break;case 13:sarRatio=[160,99];break;case 14:sarRatio=[4,3];break;case 15:sarRatio=[3,2];break;case 16:sarRatio=[2,1];break;case 255:sarRatio=[expGolombDecoder.readUnsignedByte()<<8|expGolombDecoder.readUnsignedByte(),expGolombDecoder.readUnsignedByte()<<8|expGolombDecoder.readUnsignedByte()]}sarRatio&&(sarRatio[0],sarRatio[1])}return{profileIdc:profileIdc,levelIdc:levelIdc,profileCompatibility:profileCompatibility,width:16*(picWidthInMbsMinus1+1)-2*frameCropLeftOffset-2*frameCropRightOffset,height:(2-frameMbsOnlyFlag)*(picHeightInMapUnitsMinus1+1)*16-2*frameCropTopOffset-2*frameCropBottomOffset,sarRatio:sarRatio}}},H264Stream$1.prototype=new Stream$2;var AacStream$1,h264={H264Stream:H264Stream$1,NalByteStream:NalByteStream},ADTS_SAMPLING_FREQUENCIES=[96e3,88200,64e3,48e3,44100,32e3,24e3,22050,16e3,12e3,11025,8e3,7350],parseId3TagSize=function(header,byteIndex){var returnSize=header[byteIndex+6]<<21|header[byteIndex+7]<<14|header[byteIndex+8]<<7|header[byteIndex+9];return returnSize=returnSize>=0?returnSize:0,(16&header[byteIndex+5])>>4?returnSize+20:returnSize+10},getId3Offset=function(data,offset){return data.length-offset<10||data[offset]!=="I".charCodeAt(0)||data[offset+1]!=="D".charCodeAt(0)||data[offset+2]!=="3".charCodeAt(0)?offset:(offset+=parseId3TagSize(data,offset),getId3Offset(data,offset))},parseSyncSafeInteger=function(data){return data[0]<<21|data[1]<<14|data[2]<<7|data[3]},utils={isLikelyAacData:function(data){var offset=getId3Offset(data,0);return data.length>=offset+2&&255==(255&data[offset])&&240==(240&data[offset+1])&&16==(22&data[offset+1])},parseId3TagSize:parseId3TagSize,parseAdtsSize:function(header,byteIndex){var lowThree=(224&header[byteIndex+5])>>5,middle=header[byteIndex+4]<<3;return 6144&header[byteIndex+3]|middle|lowThree},parseType:function(header,byteIndex){return header[byteIndex]==="I".charCodeAt(0)&&header[byteIndex+1]==="D".charCodeAt(0)&&header[byteIndex+2]==="3".charCodeAt(0)?"timed-metadata":!0&header[byteIndex]&&240==(240&header[byteIndex+1])?"audio":null},parseSampleRate:function(packet){for(var i=0;i+5<packet.length;){if(255===packet[i]&&240==(246&packet[i+1]))return ADTS_SAMPLING_FREQUENCIES[(60&packet[i+2])>>>2];i++}return null},parseAacTimestamp:function(packet){var frameStart,frameSize,frame;frameStart=10,64&packet[5]&&(frameStart+=4,frameStart+=parseSyncSafeInteger(packet.subarray(10,14)));do{if((frameSize=parseSyncSafeInteger(packet.subarray(frameStart+4,frameStart+8)))<1)return null;if("PRIV"===String.fromCharCode(packet[frameStart],packet[frameStart+1],packet[frameStart+2],packet[frameStart+3])){frame=packet.subarray(frameStart+10,frameStart+frameSize+10);for(var i=0;i<frame.byteLength;i++)if(0===frame[i]){var owner=unescape(function(bytes,start,end){var i,result="";for(i=start;i<end;i++)result+="%"+("00"+bytes[i].toString(16)).slice(-2);return result}(frame,0,i));if("com.apple.streaming.transportStreamTimestamp"===owner){var d=frame.subarray(i+1),size=(1&d[3])<<30|d[4]<<22|d[5]<<14|d[6]<<6|d[7]>>>2;return size*=4,size+=3&d[7]}break}}frameStart+=10,frameStart+=frameSize}while(frameStart<packet.byteLength);return null}},aacUtils=utils;(AacStream$1=function(){var everything=new Uint8Array,timeStamp=0;AacStream$1.prototype.init.call(this),this.setTimestamp=function(timestamp){timeStamp=timestamp},this.push=function(bytes){var bytesLeft,chunk,packet,tempLength,frameSize=0,byteIndex=0;for(everything.length?(tempLength=everything.length,(everything=new Uint8Array(bytes.byteLength+tempLength)).set(everything.subarray(0,tempLength)),everything.set(bytes,tempLength)):everything=bytes;everything.length-byteIndex>=3;)if(everything[byteIndex]!=="I".charCodeAt(0)||everything[byteIndex+1]!=="D".charCodeAt(0)||everything[byteIndex+2]!=="3".charCodeAt(0))if(255!=(255&everything[byteIndex])||240!=(240&everything[byteIndex+1]))byteIndex++;else{if(everything.length-byteIndex<7)break;if(byteIndex+(frameSize=aacUtils.parseAdtsSize(everything,byteIndex))>everything.length)break;packet={type:"audio",data:everything.subarray(byteIndex,byteIndex+frameSize),pts:timeStamp,dts:timeStamp},this.trigger("data",packet),byteIndex+=frameSize}else{if(everything.length-byteIndex<10)break;if(byteIndex+(frameSize=aacUtils.parseId3TagSize(everything,byteIndex))>everything.length)break;chunk={type:"timed-metadata",data:everything.subarray(byteIndex,byteIndex+frameSize)},this.trigger("data",chunk),byteIndex+=frameSize}bytesLeft=everything.length-byteIndex,everything=bytesLeft>0?everything.subarray(byteIndex):new Uint8Array},this.reset=function(){everything=new Uint8Array,this.trigger("reset")},this.endTimeline=function(){everything=new Uint8Array,this.trigger("endedtimeline")}}).prototype=new stream;var VideoSegmentStream,AudioSegmentStream,Transmuxer,CoalesceStream,Stream=stream,mp4=mp4Generator,frameUtils=frameUtils$1,audioFrameUtils=audioFrameUtils$1,trackDecodeInfo=trackDecodeInfo$1,m2ts=m2ts_1,clock=clock$2,AdtsStream=adts,H264Stream=h264.H264Stream,AacStream=AacStream$1,isLikelyAacData=utils.isLikelyAacData,ONE_SECOND_IN_TS$1=clock$2.ONE_SECOND_IN_TS,AUDIO_PROPERTIES=["audioobjecttype","channelcount","samplerate","samplingfrequencyindex","samplesize"],VIDEO_PROPERTIES=["width","height","profileIdc","levelIdc","profileCompatibility","sarRatio"],retriggerForStream=function(key,event){event.stream=key,this.trigger("log",event)},addPipelineLogRetriggers=function(transmuxer,pipeline){for(var keys=Object.keys(pipeline),i=0;i<keys.length;i++){var key=keys[i];"headOfPipeline"!==key&&pipeline[key].on&&pipeline[key].on("log",retriggerForStream.bind(transmuxer,key))}},arrayEquals=function(a,b){var i;if(a.length!==b.length)return!1;for(i=0;i<a.length;i++)if(a[i]!==b[i])return!1;return!0},generateSegmentTimingInfo=function(baseMediaDecodeTime,startDts,startPts,endDts,endPts,prependedContentDuration){return{start:{dts:baseMediaDecodeTime,pts:baseMediaDecodeTime+(startPts-startDts)},end:{dts:baseMediaDecodeTime+(endDts-startDts),pts:baseMediaDecodeTime+(endPts-startPts)},prependedContentDuration:prependedContentDuration,baseMediaDecodeTime:baseMediaDecodeTime}};AudioSegmentStream=function(track,options){var sequenceNumber,adtsFrames=[],earliestAllowedDts=0,audioAppendStartTs=0,videoBaseMediaDecodeTime=1/0;sequenceNumber=(options=options||{}).firstSequenceNumber||0,AudioSegmentStream.prototype.init.call(this),this.push=function(data){trackDecodeInfo.collectDtsInfo(track,data),track&&AUDIO_PROPERTIES.forEach((function(prop){track[prop]=data[prop]})),adtsFrames.push(data)},this.setEarliestDts=function(earliestDts){earliestAllowedDts=earliestDts},this.setVideoBaseMediaDecodeTime=function(baseMediaDecodeTime){videoBaseMediaDecodeTime=baseMediaDecodeTime},this.setAudioAppendStart=function(timestamp){audioAppendStartTs=timestamp},this.flush=function(){var frames,moof,mdat,boxes,frameDuration,segmentDuration,videoClockCyclesOfSilencePrefixed;0!==adtsFrames.length?(frames=audioFrameUtils.trimAdtsFramesByEarliestDts(adtsFrames,track,earliestAllowedDts),track.baseMediaDecodeTime=trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track,options.keepOriginalTimestamps),videoClockCyclesOfSilencePrefixed=audioFrameUtils.prefixWithSilence(track,frames,audioAppendStartTs,videoBaseMediaDecodeTime),track.samples=audioFrameUtils.generateSampleTable(frames),mdat=mp4.mdat(audioFrameUtils.concatenateFrameData(frames)),adtsFrames=[],moof=mp4.moof(sequenceNumber,[track]),boxes=new Uint8Array(moof.byteLength+mdat.byteLength),sequenceNumber++,boxes.set(moof),boxes.set(mdat,moof.byteLength),trackDecodeInfo.clearDtsInfo(track),frameDuration=Math.ceil(1024*ONE_SECOND_IN_TS$1/track.samplerate),frames.length&&(segmentDuration=frames.length*frameDuration,this.trigger("segmentTimingInfo",generateSegmentTimingInfo(clock.audioTsToVideoTs(track.baseMediaDecodeTime,track.samplerate),frames[0].dts,frames[0].pts,frames[0].dts+segmentDuration,frames[0].pts+segmentDuration,videoClockCyclesOfSilencePrefixed||0)),this.trigger("timingInfo",{start:frames[0].pts,end:frames[0].pts+segmentDuration})),this.trigger("data",{track:track,boxes:boxes}),this.trigger("done","AudioSegmentStream")):this.trigger("done","AudioSegmentStream")},this.reset=function(){trackDecodeInfo.clearDtsInfo(track),adtsFrames=[],this.trigger("reset")}},AudioSegmentStream.prototype=new Stream,VideoSegmentStream=function(track,options){var sequenceNumber,config,pps,nalUnits=[],gopsToAlignWith=[];sequenceNumber=(options=options||{}).firstSequenceNumber||0,VideoSegmentStream.prototype.init.call(this),delete track.minPTS,this.gopCache_=[],this.push=function(nalUnit){trackDecodeInfo.collectDtsInfo(track,nalUnit),"seq_parameter_set_rbsp"!==nalUnit.nalUnitType||config||(config=nalUnit.config,track.sps=[nalUnit.data],VIDEO_PROPERTIES.forEach((function(prop){track[prop]=config[prop]}),this)),"pic_parameter_set_rbsp"!==nalUnit.nalUnitType||pps||(pps=nalUnit.data,track.pps=[nalUnit.data]),nalUnits.push(nalUnit)},this.flush=function(){for(var frames,gopForFusion,gops,moof,mdat,boxes,firstGop,lastGop,prependedContentDuration=0;nalUnits.length&&"access_unit_delimiter_rbsp"!==nalUnits[0].nalUnitType;)nalUnits.shift();if(0===nalUnits.length)return this.resetStream_(),void this.trigger("done","VideoSegmentStream");if(frames=frameUtils.groupNalsIntoFrames(nalUnits),(gops=frameUtils.groupFramesIntoGops(frames))[0][0].keyFrame||((gopForFusion=this.getGopForFusion_(nalUnits[0],track))?(prependedContentDuration=gopForFusion.duration,gops.unshift(gopForFusion),gops.byteLength+=gopForFusion.byteLength,gops.nalCount+=gopForFusion.nalCount,gops.pts=gopForFusion.pts,gops.dts=gopForFusion.dts,gops.duration+=gopForFusion.duration):gops=frameUtils.extendFirstKeyFrame(gops)),gopsToAlignWith.length){var alignedGops;if(!(alignedGops=options.alignGopsAtEnd?this.alignGopsAtEnd_(gops):this.alignGopsAtStart_(gops)))return this.gopCache_.unshift({gop:gops.pop(),pps:track.pps,sps:track.sps}),this.gopCache_.length=Math.min(6,this.gopCache_.length),nalUnits=[],this.resetStream_(),void this.trigger("done","VideoSegmentStream");trackDecodeInfo.clearDtsInfo(track),gops=alignedGops}trackDecodeInfo.collectDtsInfo(track,gops),track.samples=frameUtils.generateSampleTable(gops),mdat=mp4.mdat(frameUtils.concatenateNalData(gops)),track.baseMediaDecodeTime=trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track,options.keepOriginalTimestamps),this.trigger("processedGopsInfo",gops.map((function(gop){return{pts:gop.pts,dts:gop.dts,byteLength:gop.byteLength}}))),firstGop=gops[0],lastGop=gops[gops.length-1],this.trigger("segmentTimingInfo",generateSegmentTimingInfo(track.baseMediaDecodeTime,firstGop.dts,firstGop.pts,lastGop.dts+lastGop.duration,lastGop.pts+lastGop.duration,prependedContentDuration)),this.trigger("timingInfo",{start:gops[0].pts,end:gops[gops.length-1].pts+gops[gops.length-1].duration}),this.gopCache_.unshift({gop:gops.pop(),pps:track.pps,sps:track.sps}),this.gopCache_.length=Math.min(6,this.gopCache_.length),nalUnits=[],this.trigger("baseMediaDecodeTime",track.baseMediaDecodeTime),this.trigger("timelineStartInfo",track.timelineStartInfo),moof=mp4.moof(sequenceNumber,[track]),boxes=new Uint8Array(moof.byteLength+mdat.byteLength),sequenceNumber++,boxes.set(moof),boxes.set(mdat,moof.byteLength),this.trigger("data",{track:track,boxes:boxes}),this.resetStream_(),this.trigger("done","VideoSegmentStream")},this.reset=function(){this.resetStream_(),nalUnits=[],this.gopCache_.length=0,gopsToAlignWith.length=0,this.trigger("reset")},this.resetStream_=function(){trackDecodeInfo.clearDtsInfo(track),config=void 0,pps=void 0},this.getGopForFusion_=function(nalUnit){var dtsDistance,nearestGopObj,currentGop,currentGopObj,i,nearestDistance=1/0;for(i=0;i<this.gopCache_.length;i++)currentGop=(currentGopObj=this.gopCache_[i]).gop,track.pps&&arrayEquals(track.pps[0],currentGopObj.pps[0])&&track.sps&&arrayEquals(track.sps[0],currentGopObj.sps[0])&&(currentGop.dts<track.timelineStartInfo.dts||(dtsDistance=nalUnit.dts-currentGop.dts-currentGop.duration)>=-1e4&&dtsDistance<=45e3&&(!nearestGopObj||nearestDistance>dtsDistance)&&(nearestGopObj=currentGopObj,nearestDistance=dtsDistance));return nearestGopObj?nearestGopObj.gop:null},this.alignGopsAtStart_=function(gops){var alignIndex,gopIndex,align,gop,byteLength,nalCount,duration,alignedGops;for(byteLength=gops.byteLength,nalCount=gops.nalCount,duration=gops.duration,alignIndex=gopIndex=0;alignIndex<gopsToAlignWith.length&&gopIndex<gops.length&&(align=gopsToAlignWith[alignIndex],gop=gops[gopIndex],align.pts!==gop.pts);)gop.pts>align.pts?alignIndex++:(gopIndex++,byteLength-=gop.byteLength,nalCount-=gop.nalCount,duration-=gop.duration);return 0===gopIndex?gops:gopIndex===gops.length?null:((alignedGops=gops.slice(gopIndex)).byteLength=byteLength,alignedGops.duration=duration,alignedGops.nalCount=nalCount,alignedGops.pts=alignedGops[0].pts,alignedGops.dts=alignedGops[0].dts,alignedGops)},this.alignGopsAtEnd_=function(gops){var alignIndex,gopIndex,align,gop,alignEndIndex,matchFound,trimIndex;for(alignIndex=gopsToAlignWith.length-1,gopIndex=gops.length-1,alignEndIndex=null,matchFound=!1;alignIndex>=0&&gopIndex>=0;){if(align=gopsToAlignWith[alignIndex],gop=gops[gopIndex],align.pts===gop.pts){matchFound=!0;break}align.pts>gop.pts?alignIndex--:(alignIndex===gopsToAlignWith.length-1&&(alignEndIndex=gopIndex),gopIndex--)}if(!matchFound&&null===alignEndIndex)return null;if(0===(trimIndex=matchFound?gopIndex:alignEndIndex))return gops;var alignedGops=gops.slice(trimIndex),metadata=alignedGops.reduce((function(total,gop){return total.byteLength+=gop.byteLength,total.duration+=gop.duration,total.nalCount+=gop.nalCount,total}),{byteLength:0,duration:0,nalCount:0});return alignedGops.byteLength=metadata.byteLength,alignedGops.duration=metadata.duration,alignedGops.nalCount=metadata.nalCount,alignedGops.pts=alignedGops[0].pts,alignedGops.dts=alignedGops[0].dts,alignedGops},this.alignGopsWith=function(newGopsToAlignWith){gopsToAlignWith=newGopsToAlignWith}},VideoSegmentStream.prototype=new Stream,CoalesceStream=function(options,metadataStream){this.numberOfTracks=0,this.metadataStream=metadataStream,void 0!==(options=options||{}).remux?this.remuxTracks=!!options.remux:this.remuxTracks=!0,"boolean"==typeof options.keepOriginalTimestamps?this.keepOriginalTimestamps=options.keepOriginalTimestamps:this.keepOriginalTimestamps=!1,this.pendingTracks=[],this.videoTrack=null,this.pendingBoxes=[],this.pendingCaptions=[],this.pendingMetadata=[],this.pendingBytes=0,this.emittedTracks=0,CoalesceStream.prototype.init.call(this),this.push=function(output){return output.text?this.pendingCaptions.push(output):output.frames?this.pendingMetadata.push(output):(this.pendingTracks.push(output.track),this.pendingBytes+=output.boxes.byteLength,"video"===output.track.type&&(this.videoTrack=output.track,this.pendingBoxes.push(output.boxes)),void("audio"===output.track.type&&(this.audioTrack=output.track,this.pendingBoxes.unshift(output.boxes))))}},CoalesceStream.prototype=new Stream,CoalesceStream.prototype.flush=function(flushSource){var caption,id3,initSegment,i,offset=0,event={captions:[],captionStreams:{},metadata:[],info:{}},timelineStartPts=0;if(this.pendingTracks.length<this.numberOfTracks){if("VideoSegmentStream"!==flushSource&&"AudioSegmentStream"!==flushSource)return;if(this.remuxTracks)return;if(0===this.pendingTracks.length)return this.emittedTracks++,void(this.emittedTracks>=this.numberOfTracks&&(this.trigger("done"),this.emittedTracks=0))}if(this.videoTrack?(timelineStartPts=this.videoTrack.timelineStartInfo.pts,VIDEO_PROPERTIES.forEach((function(prop){event.info[prop]=this.videoTrack[prop]}),this)):this.audioTrack&&(timelineStartPts=this.audioTrack.timelineStartInfo.pts,AUDIO_PROPERTIES.forEach((function(prop){event.info[prop]=this.audioTrack[prop]}),this)),this.videoTrack||this.audioTrack){for(1===this.pendingTracks.length?event.type=this.pendingTracks[0].type:event.type="combined",this.emittedTracks+=this.pendingTracks.length,initSegment=mp4.initSegment(this.pendingTracks),event.initSegment=new Uint8Array(initSegment.byteLength),event.initSegment.set(initSegment),event.data=new Uint8Array(this.pendingBytes),i=0;i<this.pendingBoxes.length;i++)event.data.set(this.pendingBoxes[i],offset),offset+=this.pendingBoxes[i].byteLength;for(i=0;i<this.pendingCaptions.length;i++)(caption=this.pendingCaptions[i]).startTime=clock.metadataTsToSeconds(caption.startPts,timelineStartPts,this.keepOriginalTimestamps),caption.endTime=clock.metadataTsToSeconds(caption.endPts,timelineStartPts,this.keepOriginalTimestamps),event.captionStreams[caption.stream]=!0,event.captions.push(caption);for(i=0;i<this.pendingMetadata.length;i++)(id3=this.pendingMetadata[i]).cueTime=clock.metadataTsToSeconds(id3.pts,timelineStartPts,this.keepOriginalTimestamps),event.metadata.push(id3);for(event.metadata.dispatchType=this.metadataStream.dispatchType,this.pendingTracks.length=0,this.videoTrack=null,this.pendingBoxes.length=0,this.pendingCaptions.length=0,this.pendingBytes=0,this.pendingMetadata.length=0,this.trigger("data",event),i=0;i<event.captions.length;i++)caption=event.captions[i],this.trigger("caption",caption);for(i=0;i<event.metadata.length;i++)id3=event.metadata[i],this.trigger("id3Frame",id3)}this.emittedTracks>=this.numberOfTracks&&(this.trigger("done"),this.emittedTracks=0)},CoalesceStream.prototype.setRemux=function(val){this.remuxTracks=val},(Transmuxer=function(options){var videoTrack,audioTrack,self=this,hasFlushed=!0;Transmuxer.prototype.init.call(this),options=options||{},this.baseMediaDecodeTime=options.baseMediaDecodeTime||0,this.transmuxPipeline_={},this.setupAacPipeline=function(){var pipeline={};this.transmuxPipeline_=pipeline,pipeline.type="aac",pipeline.metadataStream=new m2ts.MetadataStream,pipeline.aacStream=new AacStream,pipeline.audioTimestampRolloverStream=new m2ts.TimestampRolloverStream("audio"),pipeline.timedMetadataTimestampRolloverStream=new m2ts.TimestampRolloverStream("timed-metadata"),pipeline.adtsStream=new AdtsStream,pipeline.coalesceStream=new CoalesceStream(options,pipeline.metadataStream),pipeline.headOfPipeline=pipeline.aacStream,pipeline.aacStream.pipe(pipeline.audioTimestampRolloverStream).pipe(pipeline.adtsStream),pipeline.aacStream.pipe(pipeline.timedMetadataTimestampRolloverStream).pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream),pipeline.metadataStream.on("timestamp",(function(frame){pipeline.aacStream.setTimestamp(frame.timeStamp)})),pipeline.aacStream.on("data",(function(data){"timed-metadata"!==data.type&&"audio"!==data.type||pipeline.audioSegmentStream||(audioTrack=audioTrack||{timelineStartInfo:{baseMediaDecodeTime:self.baseMediaDecodeTime},codec:"adts",type:"audio"},pipeline.coalesceStream.numberOfTracks++,pipeline.audioSegmentStream=new AudioSegmentStream(audioTrack,options),pipeline.audioSegmentStream.on("log",self.getLogTrigger_("audioSegmentStream")),pipeline.audioSegmentStream.on("timingInfo",self.trigger.bind(self,"audioTimingInfo")),pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream),self.trigger("trackinfo",{hasAudio:!!audioTrack,hasVideo:!!videoTrack}))})),pipeline.coalesceStream.on("data",this.trigger.bind(this,"data")),pipeline.coalesceStream.on("done",this.trigger.bind(this,"done")),addPipelineLogRetriggers(this,pipeline)},this.setupTsPipeline=function(){var pipeline={};this.transmuxPipeline_=pipeline,pipeline.type="ts",pipeline.metadataStream=new m2ts.MetadataStream,pipeline.packetStream=new m2ts.TransportPacketStream,pipeline.parseStream=new m2ts.TransportParseStream,pipeline.elementaryStream=new m2ts.ElementaryStream,pipeline.timestampRolloverStream=new m2ts.TimestampRolloverStream,pipeline.adtsStream=new AdtsStream,pipeline.h264Stream=new H264Stream,pipeline.captionStream=new m2ts.CaptionStream(options),pipeline.coalesceStream=new CoalesceStream(options,pipeline.metadataStream),pipeline.headOfPipeline=pipeline.packetStream,pipeline.packetStream.pipe(pipeline.parseStream).pipe(pipeline.elementaryStream).pipe(pipeline.timestampRolloverStream),pipeline.timestampRolloverStream.pipe(pipeline.h264Stream),pipeline.timestampRolloverStream.pipe(pipeline.adtsStream),pipeline.timestampRolloverStream.pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream),pipeline.h264Stream.pipe(pipeline.captionStream).pipe(pipeline.coalesceStream),pipeline.elementaryStream.on("data",(function(data){var i;if("metadata"===data.type){for(i=data.tracks.length;i--;)videoTrack||"video"!==data.tracks[i].type?audioTrack||"audio"!==data.tracks[i].type||((audioTrack=data.tracks[i]).timelineStartInfo.baseMediaDecodeTime=self.baseMediaDecodeTime):(videoTrack=data.tracks[i]).timelineStartInfo.baseMediaDecodeTime=self.baseMediaDecodeTime;videoTrack&&!pipeline.videoSegmentStream&&(pipeline.coalesceStream.numberOfTracks++,pipeline.videoSegmentStream=new VideoSegmentStream(videoTrack,options),pipeline.videoSegmentStream.on("log",self.getLogTrigger_("videoSegmentStream")),pipeline.videoSegmentStream.on("timelineStartInfo",(function(timelineStartInfo){audioTrack&&!options.keepOriginalTimestamps&&(audioTrack.timelineStartInfo=timelineStartInfo,pipeline.audioSegmentStream.setEarliestDts(timelineStartInfo.dts-self.baseMediaDecodeTime))})),pipeline.videoSegmentStream.on("processedGopsInfo",self.trigger.bind(self,"gopInfo")),pipeline.videoSegmentStream.on("segmentTimingInfo",self.trigger.bind(self,"videoSegmentTimingInfo")),pipeline.videoSegmentStream.on("baseMediaDecodeTime",(function(baseMediaDecodeTime){audioTrack&&pipeline.audioSegmentStream.setVideoBaseMediaDecodeTime(baseMediaDecodeTime)})),pipeline.videoSegmentStream.on("timingInfo",self.trigger.bind(self,"videoTimingInfo")),pipeline.h264Stream.pipe(pipeline.videoSegmentStream).pipe(pipeline.coalesceStream)),audioTrack&&!pipeline.audioSegmentStream&&(pipeline.coalesceStream.numberOfTracks++,pipeline.audioSegmentStream=new AudioSegmentStream(audioTrack,options),pipeline.audioSegmentStream.on("log",self.getLogTrigger_("audioSegmentStream")),pipeline.audioSegmentStream.on("timingInfo",self.trigger.bind(self,"audioTimingInfo")),pipeline.audioSegmentStream.on("segmentTimingInfo",self.trigger.bind(self,"audioSegmentTimingInfo")),pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream)),self.trigger("trackinfo",{hasAudio:!!audioTrack,hasVideo:!!videoTrack})}})),pipeline.coalesceStream.on("data",this.trigger.bind(this,"data")),pipeline.coalesceStream.on("id3Frame",(function(id3Frame){id3Frame.dispatchType=pipeline.metadataStream.dispatchType,self.trigger("id3Frame",id3Frame)})),pipeline.coalesceStream.on("caption",this.trigger.bind(this,"caption")),pipeline.coalesceStream.on("done",this.trigger.bind(this,"done")),addPipelineLogRetriggers(this,pipeline)},this.setBaseMediaDecodeTime=function(baseMediaDecodeTime){var pipeline=this.transmuxPipeline_;options.keepOriginalTimestamps||(this.baseMediaDecodeTime=baseMediaDecodeTime),audioTrack&&(audioTrack.timelineStartInfo.dts=void 0,audioTrack.timelineStartInfo.pts=void 0,trackDecodeInfo.clearDtsInfo(audioTrack),pipeline.audioTimestampRolloverStream&&pipeline.audioTimestampRolloverStream.discontinuity()),videoTrack&&(pipeline.videoSegmentStream&&(pipeline.videoSegmentStream.gopCache_=[]),videoTrack.timelineStartInfo.dts=void 0,videoTrack.timelineStartInfo.pts=void 0,trackDecodeInfo.clearDtsInfo(videoTrack),pipeline.captionStream.reset()),pipeline.timestampRolloverStream&&pipeline.timestampRolloverStream.discontinuity()},this.setAudioAppendStart=function(timestamp){audioTrack&&this.transmuxPipeline_.audioSegmentStream.setAudioAppendStart(timestamp)},this.setRemux=function(val){var pipeline=this.transmuxPipeline_;options.remux=val,pipeline&&pipeline.coalesceStream&&pipeline.coalesceStream.setRemux(val)},this.alignGopsWith=function(gopsToAlignWith){videoTrack&&this.transmuxPipeline_.videoSegmentStream&&this.transmuxPipeline_.videoSegmentStream.alignGopsWith(gopsToAlignWith)},this.getLogTrigger_=function(key){var self=this;return function(event){event.stream=key,self.trigger("log",event)}},this.push=function(data){if(hasFlushed){var isAac=isLikelyAacData(data);isAac&&"aac"!==this.transmuxPipeline_.type?this.setupAacPipeline():isAac||"ts"===this.transmuxPipeline_.type||this.setupTsPipeline(),hasFlushed=!1}this.transmuxPipeline_.headOfPipeline.push(data)},this.flush=function(){hasFlushed=!0,this.transmuxPipeline_.headOfPipeline.flush()},this.endTimeline=function(){this.transmuxPipeline_.headOfPipeline.endTimeline()},this.reset=function(){this.transmuxPipeline_.headOfPipeline&&this.transmuxPipeline_.headOfPipeline.reset()},this.resetCaptions=function(){this.transmuxPipeline_.captionStream&&this.transmuxPipeline_.captionStream.reset()}}).prototype=new Stream;var win,startTime,getTracks,getTimescaleFromMediaHeader,transmuxer={Transmuxer:Transmuxer,VideoSegmentStream:VideoSegmentStream,AudioSegmentStream:AudioSegmentStream,AUDIO_PROPERTIES:AUDIO_PROPERTIES,VIDEO_PROPERTIES:VIDEO_PROPERTIES,generateSegmentTimingInfo:generateSegmentTimingInfo},bin_toUnsigned=function(value){return value>>>0},parseType_1=function(buffer){var result="";return result+=String.fromCharCode(buffer[0]),result+=String.fromCharCode(buffer[1]),result+=String.fromCharCode(buffer[2]),result+=String.fromCharCode(buffer[3])},toUnsigned$2=bin_toUnsigned,parseType$2=parseType_1,findBox$2=function(data,path){var i,size,type,end,subresults,results=[];if(!path.length)return null;for(i=0;i<data.byteLength;)size=toUnsigned$2(data[i]<<24|data[i+1]<<16|data[i+2]<<8|data[i+3]),type=parseType$2(data.subarray(i+4,i+8)),end=size>1?i+size:data.byteLength,type===path[0]&&(1===path.length?results.push(data.subarray(i+8,end)):(subresults=findBox$2(data.subarray(i+8,end),path.slice(1))).length&&(results=results.concat(subresults))),i=end;return results},toUnsigned$1=bin_toUnsigned,getUint64$2=numbers.getUint64,parseTfdt$2=function(data){var result={version:data[0],flags:new Uint8Array(data.subarray(1,4))};return 1===result.version?result.baseMediaDecodeTime=getUint64$2(data.subarray(4)):result.baseMediaDecodeTime=toUnsigned$1(data[4]<<24|data[5]<<16|data[6]<<8|data[7]),result},parseSampleFlags=function(flags){return{isLeading:(12&flags[0])>>>2,dependsOn:3&flags[0],isDependedOn:(192&flags[1])>>>6,hasRedundancy:(48&flags[1])>>>4,paddingValue:(14&flags[1])>>>1,isNonSyncSample:1&flags[1],degradationPriority:flags[2]<<8|flags[3]}},parseTrun$2=function(data){var sample,result={version:data[0],flags:new Uint8Array(data.subarray(1,4)),samples:[]},view=new DataView(data.buffer,data.byteOffset,data.byteLength),dataOffsetPresent=1&result.flags[2],firstSampleFlagsPresent=4&result.flags[2],sampleDurationPresent=1&result.flags[1],sampleSizePresent=2&result.flags[1],sampleFlagsPresent=4&result.flags[1],sampleCompositionTimeOffsetPresent=8&result.flags[1],sampleCount=view.getUint32(4),offset=8;for(dataOffsetPresent&&(result.dataOffset=view.getInt32(offset),offset+=4),firstSampleFlagsPresent&&sampleCount&&(sample={flags:parseSampleFlags(data.subarray(offset,offset+4))},offset+=4,sampleDurationPresent&&(sample.duration=view.getUint32(offset),offset+=4),sampleSizePresent&&(sample.size=view.getUint32(offset),offset+=4),sampleCompositionTimeOffsetPresent&&(1===result.version?sample.compositionTimeOffset=view.getInt32(offset):sample.compositionTimeOffset=view.getUint32(offset),offset+=4),result.samples.push(sample),sampleCount--);sampleCount--;)sample={},sampleDurationPresent&&(sample.duration=view.getUint32(offset),offset+=4),sampleSizePresent&&(sample.size=view.getUint32(offset),offset+=4),sampleFlagsPresent&&(sample.flags=parseSampleFlags(data.subarray(offset,offset+4)),offset+=4),sampleCompositionTimeOffsetPresent&&(1===result.version?sample.compositionTimeOffset=view.getInt32(offset):sample.compositionTimeOffset=view.getUint32(offset),offset+=4),result.samples.push(sample);return result},parseTfhd$2=function(data){var i,view=new DataView(data.buffer,data.byteOffset,data.byteLength),result={version:data[0],flags:new Uint8Array(data.subarray(1,4)),trackId:view.getUint32(4)},baseDataOffsetPresent=1&result.flags[2],sampleDescriptionIndexPresent=2&result.flags[2],defaultSampleDurationPresent=8&result.flags[2],defaultSampleSizePresent=16&result.flags[2],defaultSampleFlagsPresent=32&result.flags[2],durationIsEmpty=65536&result.flags[0],defaultBaseIsMoof=131072&result.flags[0];return i=8,baseDataOffsetPresent&&(i+=4,result.baseDataOffset=view.getUint32(12),i+=4),sampleDescriptionIndexPresent&&(result.sampleDescriptionIndex=view.getUint32(i),i+=4),defaultSampleDurationPresent&&(result.defaultSampleDuration=view.getUint32(i),i+=4),defaultSampleSizePresent&&(result.defaultSampleSize=view.getUint32(i),i+=4),defaultSampleFlagsPresent&&(result.defaultSampleFlags=view.getUint32(i)),durationIsEmpty&&(result.durationIsEmpty=!0),!baseDataOffsetPresent&&defaultBaseIsMoof&&(result.baseDataOffsetIsMoof=!0),result},discardEmulationPreventionBytes=(win="undefined"!=typeof window?window:void 0!==commonjsGlobal?commonjsGlobal:"undefined"!=typeof self?self:{},captionPacketParser.discardEmulationPreventionBytes),CaptionStream=captionStream.CaptionStream,findBox$1=findBox$2,parseTfdt$1=parseTfdt$2,parseTrun$1=parseTrun$2,parseTfhd$1=parseTfhd$2,window$2=win,mapToSample=function(offset,samples){for(var approximateOffset=offset,i=0;i<samples.length;i++){var sample=samples[i];if(approximateOffset<sample.size)return sample;approximateOffset-=sample.size}return null},parseCaptionNals=function(segment,videoTrackId){var trafs=findBox$1(segment,["moof","traf"]),mdats=findBox$1(segment,["mdat"]),captionNals={},mdatTrafPairs=[];return mdats.forEach((function(mdat,index){var matchingTraf=trafs[index];mdatTrafPairs.push({mdat:mdat,traf:matchingTraf})})),mdatTrafPairs.forEach((function(pair){var samples,result,mdat=pair.mdat,traf=pair.traf,tfhd=findBox$1(traf,["tfhd"]),headerInfo=parseTfhd$1(tfhd[0]),trackId=headerInfo.trackId,tfdt=findBox$1(traf,["tfdt"]),baseMediaDecodeTime=tfdt.length>0?parseTfdt$1(tfdt[0]).baseMediaDecodeTime:0,truns=findBox$1(traf,["trun"]);videoTrackId===trackId&&truns.length>0&&(samples=function(truns,baseMediaDecodeTime,tfhd){var currentDts=baseMediaDecodeTime,defaultSampleDuration=tfhd.defaultSampleDuration||0,defaultSampleSize=tfhd.defaultSampleSize||0,trackId=tfhd.trackId,allSamples=[];return truns.forEach((function(trun){var samples=parseTrun$1(trun).samples;samples.forEach((function(sample){void 0===sample.duration&&(sample.duration=defaultSampleDuration),void 0===sample.size&&(sample.size=defaultSampleSize),sample.trackId=trackId,sample.dts=currentDts,void 0===sample.compositionTimeOffset&&(sample.compositionTimeOffset=0),"bigint"==typeof currentDts?(sample.pts=currentDts+window$2.BigInt(sample.compositionTimeOffset),currentDts+=window$2.BigInt(sample.duration)):(sample.pts=currentDts+sample.compositionTimeOffset,currentDts+=sample.duration)})),allSamples=allSamples.concat(samples)})),allSamples}(truns,baseMediaDecodeTime,headerInfo),result=function(avcStream,samples,trackId){var seiNal,i,length,lastMatchedSample,avcView=new DataView(avcStream.buffer,avcStream.byteOffset,avcStream.byteLength),result={logs:[],seiNals:[]};for(i=0;i+4<avcStream.length;i+=length)if(length=avcView.getUint32(i),i+=4,!(length<=0))switch(31&avcStream[i]){case 6:var data=avcStream.subarray(i+1,i+1+length),matchingSample=mapToSample(i,samples);if(seiNal={nalUnitType:"sei_rbsp",size:length,data:data,escapedRBSP:discardEmulationPreventionBytes(data),trackId:trackId},matchingSample)seiNal.pts=matchingSample.pts,seiNal.dts=matchingSample.dts,lastMatchedSample=matchingSample;else{if(!lastMatchedSample){result.logs.push({level:"warn",message:"We've encountered a nal unit without data at "+i+" for trackId "+trackId+". See mux.js#223."});break}seiNal.pts=lastMatchedSample.pts,seiNal.dts=lastMatchedSample.dts}result.seiNals.push(seiNal)}return result}(mdat,samples,trackId),captionNals[trackId]||(captionNals[trackId]={seiNals:[],logs:[]}),captionNals[trackId].seiNals=captionNals[trackId].seiNals.concat(result.seiNals),captionNals[trackId].logs=captionNals[trackId].logs.concat(result.logs))})),captionNals},captionParser=function(){var captionStream,segmentCache,trackId,timescale,parsedCaptions,parsingPartial,isInitialized=!1;this.isInitialized=function(){return isInitialized},this.init=function(options){captionStream=new CaptionStream,isInitialized=!0,parsingPartial=!!options&&options.isPartial,captionStream.on("data",(function(event){event.startTime=event.startPts/timescale,event.endTime=event.endPts/timescale,parsedCaptions.captions.push(event),parsedCaptions.captionStreams[event.stream]=!0})),captionStream.on("log",(function(log){parsedCaptions.logs.push(log)}))},this.isNewInit=function(videoTrackIds,timescales){return!(videoTrackIds&&0===videoTrackIds.length||timescales&&"object"==typeof timescales&&0===Object.keys(timescales).length)&&(trackId!==videoTrackIds[0]||timescale!==timescales[trackId])},this.parse=function(segment,videoTrackIds,timescales){var parsedData;if(!this.isInitialized())return null;if(!videoTrackIds||!timescales)return null;if(this.isNewInit(videoTrackIds,timescales))trackId=videoTrackIds[0],timescale=timescales[trackId];else if(null===trackId||!timescale)return segmentCache.push(segment),null;for(;segmentCache.length>0;){var cachedSegment=segmentCache.shift();this.parse(cachedSegment,videoTrackIds,timescales)}return parsedData=function(segment,trackId,timescale){if(null===trackId)return null;var trackNals=parseCaptionNals(segment,trackId)[trackId]||{};return{seiNals:trackNals.seiNals,logs:trackNals.logs,timescale:timescale}}(segment,trackId,timescale),parsedData&&parsedData.logs&&(parsedCaptions.logs=parsedCaptions.logs.concat(parsedData.logs)),null!==parsedData&&parsedData.seiNals?(this.pushNals(parsedData.seiNals),this.flushStream(),parsedCaptions):parsedCaptions.logs.length?{logs:parsedCaptions.logs,captions:[],captionStreams:[]}:null},this.pushNals=function(nals){if(!this.isInitialized()||!nals||0===nals.length)return null;nals.forEach((function(nal){captionStream.push(nal)}))},this.flushStream=function(){if(!this.isInitialized())return null;parsingPartial?captionStream.partialFlush():captionStream.flush()},this.clearParsedCaptions=function(){parsedCaptions.captions=[],parsedCaptions.captionStreams={},parsedCaptions.logs=[]},this.resetCaptionStream=function(){if(!this.isInitialized())return null;captionStream.reset()},this.clearAllCaptions=function(){this.clearParsedCaptions(),this.resetCaptionStream()},this.reset=function(){segmentCache=[],trackId=null,timescale=null,parsedCaptions?this.clearParsedCaptions():parsedCaptions={captions:[],captionStreams:{},logs:[]},this.resetCaptionStream()},this.reset()},uint8ToCString=function(data){for(var index=0,curChar=String.fromCharCode(data[index]),retString="";"\0"!==curChar;)retString+=curChar,index++,curChar=String.fromCharCode(data[index]);return retString+=curChar},getUint64$1=numbers.getUint64,isValidEmsgBox=function(version,emsg){var hasScheme="\0"!==emsg.scheme_id_uri,isValidV0Box=0===version&&isDefined(emsg.presentation_time_delta)&&hasScheme,isValidV1Box=1===version&&isDefined(emsg.presentation_time)&&hasScheme;return!(version>1)&&isValidV0Box||isValidV1Box},isDefined=function(data){return void 0!==data||null!==data},emsg$1={parseEmsgBox:function(boxData){var scheme_id_uri,value,timescale,presentation_time,presentation_time_delta,event_duration,id,offset=4,version=boxData[0];if(0===version)offset+=(scheme_id_uri=uint8ToCString(boxData.subarray(offset))).length,offset+=(value=uint8ToCString(boxData.subarray(offset))).length,timescale=(dv=new DataView(boxData.buffer)).getUint32(offset),offset+=4,presentation_time_delta=dv.getUint32(offset),offset+=4,event_duration=dv.getUint32(offset),offset+=4,id=dv.getUint32(offset),offset+=4;else if(1===version){var dv;timescale=(dv=new DataView(boxData.buffer)).getUint32(offset),offset+=4,presentation_time=getUint64$1(boxData.subarray(offset)),offset+=8,event_duration=dv.getUint32(offset),offset+=4,id=dv.getUint32(offset),offset+=4,offset+=(scheme_id_uri=uint8ToCString(boxData.subarray(offset))).length,offset+=(value=uint8ToCString(boxData.subarray(offset))).length}var emsgBox={scheme_id_uri:scheme_id_uri,value:value,timescale:timescale||1,presentation_time:presentation_time,presentation_time_delta:presentation_time_delta,event_duration:event_duration,id:id,message_data:new Uint8Array(boxData.subarray(offset,boxData.byteLength))};return isValidEmsgBox(version,emsgBox)?emsgBox:void 0},scaleTime:function(presentationTime,timescale,timeDelta,offset){return presentationTime||0===presentationTime?presentationTime/timescale:offset+timeDelta/timescale}},toUnsigned=bin_toUnsigned,toHexString=function(value){return("00"+value.toString(16)).slice(-2)},findBox=findBox$2,parseType$1=parseType_1,emsg=emsg$1,parseTfhd=parseTfhd$2,parseTrun=parseTrun$2,parseTfdt=parseTfdt$2,getUint64=numbers.getUint64,window$1=win,parseId3Frames=parseId3.parseId3Frames;startTime=function(timescale,fragment){var lowestTime=findBox(fragment,["moof","traf"]).reduce((function(acc,traf){var baseTime,tfhd=findBox(traf,["tfhd"])[0],id=toUnsigned(tfhd[4]<<24|tfhd[5]<<16|tfhd[6]<<8|tfhd[7]),scale=timescale[id]||9e4,tfdt=findBox(traf,["tfdt"])[0],dv=new DataView(tfdt.buffer,tfdt.byteOffset,tfdt.byteLength);let seconds;return"bigint"==typeof(baseTime=1===tfdt[0]?getUint64(tfdt.subarray(4,12)):dv.getUint32(4))?seconds=baseTime/window$1.BigInt(scale):"number"!=typeof baseTime||isNaN(baseTime)||(seconds=baseTime/scale),seconds<Number.MAX_SAFE_INTEGER&&(seconds=Number(seconds)),seconds<acc&&(acc=seconds),acc}),1/0);return"bigint"==typeof lowestTime||isFinite(lowestTime)?lowestTime:0},getTimescaleFromMediaHeader=function(mdhd){var index=0===mdhd[0]?12:20;return toUnsigned(mdhd[index]<<24|mdhd[index+1]<<16|mdhd[index+2]<<8|mdhd[index+3])},getTracks=function(init){var traks=findBox(init,["moov","trak"]),tracks=[];return traks.forEach((function(trak){var view,tkhdVersion,track={},tkhd=findBox(trak,["tkhd"])[0];tkhd&&(tkhdVersion=(view=new DataView(tkhd.buffer,tkhd.byteOffset,tkhd.byteLength)).getUint8(0),track.id=0===tkhdVersion?view.getUint32(12):view.getUint32(20));var hdlr=findBox(trak,["mdia","hdlr"])[0];if(hdlr){var type=parseType$1(hdlr.subarray(8,12));track.type="vide"===type?"video":"soun"===type?"audio":type}var stsd=findBox(trak,["mdia","minf","stbl","stsd"])[0];if(stsd){var sampleDescriptions=stsd.subarray(8);track.codec=parseType$1(sampleDescriptions.subarray(4,8));var codecConfig,codecBox=findBox(sampleDescriptions,[track.codec])[0];codecBox&&(/^[asm]vc[1-9]$/i.test(track.codec)?(codecConfig=codecBox.subarray(78),"avcC"===parseType$1(codecConfig.subarray(4,8))&&codecConfig.length>11?(track.codec+=".",track.codec+=toHexString(codecConfig[9]),track.codec+=toHexString(codecConfig[10]),track.codec+=toHexString(codecConfig[11])):track.codec="avc1.4d400d"):/^mp4[a,v]$/i.test(track.codec)?(codecConfig=codecBox.subarray(28),"esds"===parseType$1(codecConfig.subarray(4,8))&&codecConfig.length>20&&0!==codecConfig[19]?(track.codec+="."+toHexString(codecConfig[19]),track.codec+="."+toHexString(codecConfig[20]>>>2&63).replace(/^0/,"")):track.codec="mp4a.40.2"):track.codec=track.codec.toLowerCase())}var mdhd=findBox(trak,["mdia","mdhd"])[0];mdhd&&(track.timescale=getTimescaleFromMediaHeader(mdhd)),tracks.push(track)})),tracks};var probe$2_startTime=startTime,probe$2_tracks=getTracks,StreamTypes$1=streamTypes,parsePid=function(packet){var pid=31&packet[1];return pid<<=8,pid|=packet[2]},parsePayloadUnitStartIndicator=function(packet){return!!(64&packet[1])},parseAdaptionField=function(packet){var offset=0;return(48&packet[3])>>>4>1&&(offset+=packet[4]+1),offset},parseNalUnitType=function(type){switch(type){case 5:return"slice_layer_without_partitioning_rbsp_idr";case 6:return"sei_rbsp";case 7:return"seq_parameter_set_rbsp";case 8:return"pic_parameter_set_rbsp";case 9:return"access_unit_delimiter_rbsp";default:return null}},probe$1={parseType:function(packet,pmtPid){var pid=parsePid(packet);return 0===pid?"pat":pid===pmtPid?"pmt":pmtPid?"pes":null},parsePat:function(packet){var pusi=parsePayloadUnitStartIndicator(packet),offset=4+parseAdaptionField(packet);return pusi&&(offset+=packet[offset]+1),(31&packet[offset+10])<<8|packet[offset+11]},parsePmt:function(packet){var programMapTable={},pusi=parsePayloadUnitStartIndicator(packet),payloadOffset=4+parseAdaptionField(packet);if(pusi&&(payloadOffset+=packet[payloadOffset]+1),1&packet[payloadOffset+5]){var tableEnd;tableEnd=3+((15&packet[payloadOffset+1])<<8|packet[payloadOffset+2])-4;for(var offset=12+((15&packet[payloadOffset+10])<<8|packet[payloadOffset+11]);offset<tableEnd;){var i=payloadOffset+offset;programMapTable[(31&packet[i+1])<<8|packet[i+2]]=packet[i],offset+=5+((15&packet[i+3])<<8|packet[i+4])}return programMapTable}},parsePayloadUnitStartIndicator:parsePayloadUnitStartIndicator,parsePesType:function(packet,programMapTable){switch(programMapTable[parsePid(packet)]){case StreamTypes$1.H264_STREAM_TYPE:return"video";case StreamTypes$1.ADTS_STREAM_TYPE:return"audio";case StreamTypes$1.METADATA_STREAM_TYPE:return"timed-metadata";default:return null}},parsePesTime:function(packet){if(!parsePayloadUnitStartIndicator(packet))return null;var offset=4+parseAdaptionField(packet);if(offset>=packet.byteLength)return null;var ptsDtsFlags,pes=null;return 192&(ptsDtsFlags=packet[offset+7])&&((pes={}).pts=(14&packet[offset+9])<<27|(255&packet[offset+10])<<20|(254&packet[offset+11])<<12|(255&packet[offset+12])<<5|(254&packet[offset+13])>>>3,pes.pts*=4,pes.pts+=(6&packet[offset+13])>>>1,pes.dts=pes.pts,64&ptsDtsFlags&&(pes.dts=(14&packet[offset+14])<<27|(255&packet[offset+15])<<20|(254&packet[offset+16])<<12|(255&packet[offset+17])<<5|(254&packet[offset+18])>>>3,pes.dts*=4,pes.dts+=(6&packet[offset+18])>>>1)),pes},videoPacketContainsKeyFrame:function(packet){for(var offset=4+parseAdaptionField(packet),frameBuffer=packet.subarray(offset),frameI=0,frameSyncPoint=0,foundKeyFrame=!1;frameSyncPoint<frameBuffer.byteLength-3;frameSyncPoint++)if(1===frameBuffer[frameSyncPoint+2]){frameI=frameSyncPoint+5;break}for(;frameI<frameBuffer.byteLength;)switch(frameBuffer[frameI]){case 0:if(0!==frameBuffer[frameI-1]){frameI+=2;break}if(0!==frameBuffer[frameI-2]){frameI++;break}frameSyncPoint+3!==frameI-2&&"slice_layer_without_partitioning_rbsp_idr"===parseNalUnitType(31&frameBuffer[frameSyncPoint+3])&&(foundKeyFrame=!0);do{frameI++}while(1!==frameBuffer[frameI]&&frameI<frameBuffer.length);frameSyncPoint=frameI-2,frameI+=3;break;case 1:if(0!==frameBuffer[frameI-1]||0!==frameBuffer[frameI-2]){frameI+=3;break}"slice_layer_without_partitioning_rbsp_idr"===parseNalUnitType(31&frameBuffer[frameSyncPoint+3])&&(foundKeyFrame=!0),frameSyncPoint=frameI-2,frameI+=3;break;default:frameI+=3}return frameBuffer=frameBuffer.subarray(frameSyncPoint),frameI-=frameSyncPoint,frameSyncPoint=0,frameBuffer&&frameBuffer.byteLength>3&&"slice_layer_without_partitioning_rbsp_idr"===parseNalUnitType(31&frameBuffer[frameSyncPoint+3])&&(foundKeyFrame=!0),foundKeyFrame}},StreamTypes=streamTypes,handleRollover=timestampRolloverStream.handleRollover,probe={};probe.ts=probe$1,probe.aac=utils;var ONE_SECOND_IN_TS=clock$2.ONE_SECOND_IN_TS,parseAudioPes_=function(bytes,pmt,result){for(var packet,pesType,pusi,parsed,startIndex=0,endIndex=188,endLoop=!1;endIndex<=bytes.byteLength;)if(71!==bytes[startIndex]||71!==bytes[endIndex]&&endIndex!==bytes.byteLength)startIndex++,endIndex++;else{if(packet=bytes.subarray(startIndex,endIndex),"pes"===probe.ts.parseType(packet,pmt.pid))pesType=probe.ts.parsePesType(packet,pmt.table),pusi=probe.ts.parsePayloadUnitStartIndicator(packet),"audio"===pesType&&pusi&&(parsed=probe.ts.parsePesTime(packet))&&(parsed.type="audio",result.audio.push(parsed),endLoop=!0);if(endLoop)break;startIndex+=188,endIndex+=188}for(startIndex=(endIndex=bytes.byteLength)-188,endLoop=!1;startIndex>=0;)if(71!==bytes[startIndex]||71!==bytes[endIndex]&&endIndex!==bytes.byteLength)startIndex--,endIndex--;else{if(packet=bytes.subarray(startIndex,endIndex),"pes"===probe.ts.parseType(packet,pmt.pid))pesType=probe.ts.parsePesType(packet,pmt.table),pusi=probe.ts.parsePayloadUnitStartIndicator(packet),"audio"===pesType&&pusi&&(parsed=probe.ts.parsePesTime(packet))&&(parsed.type="audio",result.audio.push(parsed),endLoop=!0);if(endLoop)break;startIndex-=188,endIndex-=188}},parseVideoPes_=function(bytes,pmt,result){for(var packet,pesType,pusi,parsed,frame,i,pes,startIndex=0,endIndex=188,endLoop=!1,currentFrame={data:[],size:0};endIndex<bytes.byteLength;)if(71!==bytes[startIndex]||71!==bytes[endIndex])startIndex++,endIndex++;else{if(packet=bytes.subarray(startIndex,endIndex),"pes"===probe.ts.parseType(packet,pmt.pid))if(pesType=probe.ts.parsePesType(packet,pmt.table),pusi=probe.ts.parsePayloadUnitStartIndicator(packet),"video"===pesType&&(pusi&&!endLoop&&(parsed=probe.ts.parsePesTime(packet))&&(parsed.type="video",result.video.push(parsed),endLoop=!0),!result.firstKeyFrame)){if(pusi&&0!==currentFrame.size){for(frame=new Uint8Array(currentFrame.size),i=0;currentFrame.data.length;)pes=currentFrame.data.shift(),frame.set(pes,i),i+=pes.byteLength;if(probe.ts.videoPacketContainsKeyFrame(frame)){var firstKeyFrame=probe.ts.parsePesTime(frame);firstKeyFrame?(result.firstKeyFrame=firstKeyFrame,result.firstKeyFrame.type="video"):console.warn("Failed to extract PTS/DTS from PES at first keyframe. This could be an unusual TS segment, or else mux.js did not parse your TS segment correctly. If you know your TS segments do contain PTS/DTS on keyframes please file a bug report! You can try ffprobe to double check for yourself.")}currentFrame.size=0}currentFrame.data.push(packet),currentFrame.size+=packet.byteLength}if(endLoop&&result.firstKeyFrame)break;startIndex+=188,endIndex+=188}for(startIndex=(endIndex=bytes.byteLength)-188,endLoop=!1;startIndex>=0;)if(71!==bytes[startIndex]||71!==bytes[endIndex])startIndex--,endIndex--;else{if(packet=bytes.subarray(startIndex,endIndex),"pes"===probe.ts.parseType(packet,pmt.pid))pesType=probe.ts.parsePesType(packet,pmt.table),pusi=probe.ts.parsePayloadUnitStartIndicator(packet),"video"===pesType&&pusi&&(parsed=probe.ts.parsePesTime(packet))&&(parsed.type="video",result.video.push(parsed),endLoop=!0);if(endLoop)break;startIndex-=188,endIndex-=188}},inspectTs_=function(bytes){var pmt={pid:null,table:null},result={};for(var pid in function(bytes,pmt){for(var packet,startIndex=0,endIndex=188;endIndex<bytes.byteLength;)if(71!==bytes[startIndex]||71!==bytes[endIndex])startIndex++,endIndex++;else{switch(packet=bytes.subarray(startIndex,endIndex),probe.ts.parseType(packet,pmt.pid)){case"pat":pmt.pid=probe.ts.parsePat(packet);break;case"pmt":var table=probe.ts.parsePmt(packet);pmt.table=pmt.table||{},Object.keys(table).forEach((function(key){pmt.table[key]=table[key]}))}startIndex+=188,endIndex+=188}}(bytes,pmt),pmt.table){if(pmt.table.hasOwnProperty(pid))switch(pmt.table[pid]){case StreamTypes.H264_STREAM_TYPE:result.video=[],parseVideoPes_(bytes,pmt,result),0===result.video.length&&delete result.video;break;case StreamTypes.ADTS_STREAM_TYPE:result.audio=[],parseAudioPes_(bytes,pmt,result),0===result.audio.length&&delete result.audio}}return result},tsInspector_inspect=function(bytes,baseTimestamp){var result;return result=probe.aac.isLikelyAacData(bytes)?function(bytes){for(var packet,endLoop=!1,audioCount=0,sampleRate=null,timestamp=null,frameSize=0,byteIndex=0;bytes.length-byteIndex>=3;){switch(probe.aac.parseType(bytes,byteIndex)){case"timed-metadata":if(bytes.length-byteIndex<10){endLoop=!0;break}if((frameSize=probe.aac.parseId3TagSize(bytes,byteIndex))>bytes.length){endLoop=!0;break}null===timestamp&&(packet=bytes.subarray(byteIndex,byteIndex+frameSize),timestamp=probe.aac.parseAacTimestamp(packet)),byteIndex+=frameSize;break;case"audio":if(bytes.length-byteIndex<7){endLoop=!0;break}if((frameSize=probe.aac.parseAdtsSize(bytes,byteIndex))>bytes.length){endLoop=!0;break}null===sampleRate&&(packet=bytes.subarray(byteIndex,byteIndex+frameSize),sampleRate=probe.aac.parseSampleRate(packet)),audioCount++,byteIndex+=frameSize;break;default:byteIndex++}if(endLoop)return null}if(null===sampleRate||null===timestamp)return null;var audioTimescale=ONE_SECOND_IN_TS/sampleRate;return{audio:[{type:"audio",dts:timestamp,pts:timestamp},{type:"audio",dts:timestamp+1024*audioCount*audioTimescale,pts:timestamp+1024*audioCount*audioTimescale}]}}(bytes):inspectTs_(bytes),result&&(result.audio||result.video)?(function(segmentInfo,baseTimestamp){if(segmentInfo.audio&&segmentInfo.audio.length){var audioBaseTimestamp=baseTimestamp;(void 0===audioBaseTimestamp||isNaN(audioBaseTimestamp))&&(audioBaseTimestamp=segmentInfo.audio[0].dts),segmentInfo.audio.forEach((function(info){info.dts=handleRollover(info.dts,audioBaseTimestamp),info.pts=handleRollover(info.pts,audioBaseTimestamp),info.dtsTime=info.dts/ONE_SECOND_IN_TS,info.ptsTime=info.pts/ONE_SECOND_IN_TS}))}if(segmentInfo.video&&segmentInfo.video.length){var videoBaseTimestamp=baseTimestamp;if((void 0===videoBaseTimestamp||isNaN(videoBaseTimestamp))&&(videoBaseTimestamp=segmentInfo.video[0].dts),segmentInfo.video.forEach((function(info){info.dts=handleRollover(info.dts,videoBaseTimestamp),info.pts=handleRollover(info.pts,videoBaseTimestamp),info.dtsTime=info.dts/ONE_SECOND_IN_TS,info.ptsTime=info.pts/ONE_SECOND_IN_TS})),segmentInfo.firstKeyFrame){var frame=segmentInfo.firstKeyFrame;frame.dts=handleRollover(frame.dts,videoBaseTimestamp),frame.pts=handleRollover(frame.pts,videoBaseTimestamp),frame.dtsTime=frame.dts/ONE_SECOND_IN_TS,frame.ptsTime=frame.pts/ONE_SECOND_IN_TS}}}(result,baseTimestamp),result):null};class MessageHandlers{constructor(self,options){this.options=options||{},this.self=self,this.init()}init(){this.transmuxer&&this.transmuxer.dispose(),this.transmuxer=new transmuxer.Transmuxer(this.options),function(self,transmuxer){transmuxer.on("data",(function(segment){const initArray=segment.initSegment;segment.initSegment={data:initArray.buffer,byteOffset:initArray.byteOffset,byteLength:initArray.byteLength};const typedArray=segment.data;segment.data=typedArray.buffer,self.postMessage({action:"data",segment:segment,byteOffset:typedArray.byteOffset,byteLength:typedArray.byteLength},[segment.data])})),transmuxer.on("done",(function(data){self.postMessage({action:"done"})})),transmuxer.on("gopInfo",(function(gopInfo){self.postMessage({action:"gopInfo",gopInfo:gopInfo})})),transmuxer.on("videoSegmentTimingInfo",(function(timingInfo){const videoSegmentTimingInfo={start:{decode:clock$2.videoTsToSeconds(timingInfo.start.dts),presentation:clock$2.videoTsToSeconds(timingInfo.start.pts)},end:{decode:clock$2.videoTsToSeconds(timingInfo.end.dts),presentation:clock$2.videoTsToSeconds(timingInfo.end.pts)},baseMediaDecodeTime:clock$2.videoTsToSeconds(timingInfo.baseMediaDecodeTime)};timingInfo.prependedContentDuration&&(videoSegmentTimingInfo.prependedContentDuration=clock$2.videoTsToSeconds(timingInfo.prependedContentDuration)),self.postMessage({action:"videoSegmentTimingInfo",videoSegmentTimingInfo:videoSegmentTimingInfo})})),transmuxer.on("audioSegmentTimingInfo",(function(timingInfo){const audioSegmentTimingInfo={start:{decode:clock$2.videoTsToSeconds(timingInfo.start.dts),presentation:clock$2.videoTsToSeconds(timingInfo.start.pts)},end:{decode:clock$2.videoTsToSeconds(timingInfo.end.dts),presentation:clock$2.videoTsToSeconds(timingInfo.end.pts)},baseMediaDecodeTime:clock$2.videoTsToSeconds(timingInfo.baseMediaDecodeTime)};timingInfo.prependedContentDuration&&(audioSegmentTimingInfo.prependedContentDuration=clock$2.videoTsToSeconds(timingInfo.prependedContentDuration)),self.postMessage({action:"audioSegmentTimingInfo",audioSegmentTimingInfo:audioSegmentTimingInfo})})),transmuxer.on("id3Frame",(function(id3Frame){self.postMessage({action:"id3Frame",id3Frame:id3Frame})})),transmuxer.on("caption",(function(caption){self.postMessage({action:"caption",caption:caption})})),transmuxer.on("trackinfo",(function(trackInfo){self.postMessage({action:"trackinfo",trackInfo:trackInfo})})),transmuxer.on("audioTimingInfo",(function(audioTimingInfo){self.postMessage({action:"audioTimingInfo",audioTimingInfo:{start:clock$2.videoTsToSeconds(audioTimingInfo.start),end:clock$2.videoTsToSeconds(audioTimingInfo.end)}})})),transmuxer.on("videoTimingInfo",(function(videoTimingInfo){self.postMessage({action:"videoTimingInfo",videoTimingInfo:{start:clock$2.videoTsToSeconds(videoTimingInfo.start),end:clock$2.videoTsToSeconds(videoTimingInfo.end)}})})),transmuxer.on("log",(function(log){self.postMessage({action:"log",log:log})}))}(this.self,this.transmuxer)}pushMp4Captions(data){this.captionParser||(this.captionParser=new captionParser,this.captionParser.init());const segment=new Uint8Array(data.data,data.byteOffset,data.byteLength),parsed=this.captionParser.parse(segment,data.trackIds,data.timescales);this.self.postMessage({action:"mp4Captions",captions:parsed&&parsed.captions||[],logs:parsed&&parsed.logs||[],data:segment.buffer},[segment.buffer])}probeMp4StartTime(_ref43){let{timescales:timescales,data:data}=_ref43;const startTime=probe$2_startTime(timescales,data);this.self.postMessage({action:"probeMp4StartTime",startTime:startTime,data:data},[data.buffer])}probeMp4Tracks(_ref44){let{data:data}=_ref44;const tracks=probe$2_tracks(data);this.self.postMessage({action:"probeMp4Tracks",tracks:tracks,data:data},[data.buffer])}probeTs(_ref45){let{data:data,baseStartTime:baseStartTime}=_ref45;const tsStartTime="number"!=typeof baseStartTime||isNaN(baseStartTime)?void 0:baseStartTime*clock$2.ONE_SECOND_IN_TS,timeInfo=tsInspector_inspect(data,tsStartTime);let result=null;timeInfo&&(result={hasVideo:timeInfo.video&&2===timeInfo.video.length||!1,hasAudio:timeInfo.audio&&2===timeInfo.audio.length||!1},result.hasVideo&&(result.videoStart=timeInfo.video[0].ptsTime),result.hasAudio&&(result.audioStart=timeInfo.audio[0].ptsTime)),this.self.postMessage({action:"probeTs",result:result,data:data},[data.buffer])}clearAllMp4Captions(){this.captionParser&&this.captionParser.clearAllCaptions()}clearParsedMp4Captions(){this.captionParser&&this.captionParser.clearParsedCaptions()}push(data){const segment=new Uint8Array(data.data,data.byteOffset,data.byteLength);this.transmuxer.push(segment)}reset(){this.transmuxer.reset()}setTimestampOffset(data){const timestampOffset=data.timestampOffset||0;this.transmuxer.setBaseMediaDecodeTime(Math.round(clock$2.secondsToVideoTs(timestampOffset)))}setAudioAppendStart(data){this.transmuxer.setAudioAppendStart(Math.ceil(clock$2.secondsToVideoTs(data.appendStart)))}setRemux(data){this.transmuxer.setRemux(data.remux)}flush(data){this.transmuxer.flush(),self.postMessage({action:"done",type:"transmuxed"})}endTimeline(){this.transmuxer.endTimeline(),self.postMessage({action:"endedtimeline",type:"transmuxed"})}alignGopsWith(data){this.transmuxer.alignGopsWith(data.gopsToAlignWith.slice())}}self.onmessage=function(event){"init"===event.data.action&&event.data.options?this.messageHandlers=new MessageHandlers(self,event.data.options):(this.messageHandlers||(this.messageHandlers=new MessageHandlers(self)),event.data&&event.data.action&&"init"!==event.data.action&&this.messageHandlers[event.data.action]&&this.messageHandlers[event.data.action](event.data))}})));var TransmuxWorker=factory(workerCode$1);const processTransmux=options=>{const{transmuxer:transmuxer,bytes:bytes,audioAppendStart:audioAppendStart,gopsToAlignWith:gopsToAlignWith,remux:remux,onData:onData,onTrackInfo:onTrackInfo,onAudioTimingInfo:onAudioTimingInfo,onVideoTimingInfo:onVideoTimingInfo,onVideoSegmentTimingInfo:onVideoSegmentTimingInfo,onAudioSegmentTimingInfo:onAudioSegmentTimingInfo,onId3:onId3,onCaptions:onCaptions,onDone:onDone,onEndedTimeline:onEndedTimeline,onTransmuxerLog:onTransmuxerLog,isEndOfTimeline:isEndOfTimeline}=options,transmuxedData={buffer:[]};let waitForEndedTimelineEvent=isEndOfTimeline;if(transmuxer.onmessage=event=>{transmuxer.currentTransmux===options&&("data"===event.data.action&&((event,transmuxedData,callback)=>{const{type:type,initSegment:initSegment,captions:captions,captionStreams:captionStreams,metadata:metadata,videoFrameDtsTime:videoFrameDtsTime,videoFramePtsTime:videoFramePtsTime}=event.data.segment;transmuxedData.buffer.push({captions:captions,captionStreams:captionStreams,metadata:metadata});const boxes=event.data.segment.boxes||{data:event.data.segment.data},result={type:type,data:new Uint8Array(boxes.data,boxes.data.byteOffset,boxes.data.byteLength),initSegment:new Uint8Array(initSegment.data,initSegment.byteOffset,initSegment.byteLength)};void 0!==videoFrameDtsTime&&(result.videoFrameDtsTime=videoFrameDtsTime),void 0!==videoFramePtsTime&&(result.videoFramePtsTime=videoFramePtsTime),callback(result)})(event,transmuxedData,onData),"trackinfo"===event.data.action&&onTrackInfo(event.data.trackInfo),"gopInfo"===event.data.action&&((event,transmuxedData)=>{transmuxedData.gopInfo=event.data.gopInfo})(event,transmuxedData),"audioTimingInfo"===event.data.action&&onAudioTimingInfo(event.data.audioTimingInfo),"videoTimingInfo"===event.data.action&&onVideoTimingInfo(event.data.videoTimingInfo),"videoSegmentTimingInfo"===event.data.action&&onVideoSegmentTimingInfo(event.data.videoSegmentTimingInfo),"audioSegmentTimingInfo"===event.data.action&&onAudioSegmentTimingInfo(event.data.audioSegmentTimingInfo),"id3Frame"===event.data.action&&onId3([event.data.id3Frame],event.data.id3Frame.dispatchType),"caption"===event.data.action&&onCaptions(event.data.caption),"endedtimeline"===event.data.action&&(waitForEndedTimelineEvent=!1,onEndedTimeline()),"log"===event.data.action&&onTransmuxerLog(event.data.log),"transmuxed"===event.data.type&&(waitForEndedTimelineEvent||(transmuxer.onmessage=null,(_ref46=>{let{transmuxedData:transmuxedData,callback:callback}=_ref46;transmuxedData.buffer=[],callback(transmuxedData)})({transmuxedData:transmuxedData,callback:onDone}),dequeue(transmuxer))))},audioAppendStart&&transmuxer.postMessage({action:"setAudioAppendStart",appendStart:audioAppendStart}),Array.isArray(gopsToAlignWith)&&transmuxer.postMessage({action:"alignGopsWith",gopsToAlignWith:gopsToAlignWith}),void 0!==remux&&transmuxer.postMessage({action:"setRemux",remux:remux}),bytes.byteLength){const buffer=bytes instanceof ArrayBuffer?bytes:bytes.buffer,byteOffset=bytes instanceof ArrayBuffer?0:bytes.byteOffset;transmuxer.postMessage({action:"push",data:buffer,byteOffset:byteOffset,byteLength:bytes.byteLength},[buffer])}isEndOfTimeline&&transmuxer.postMessage({action:"endTimeline"}),transmuxer.postMessage({action:"flush"})},dequeue=transmuxer=>{transmuxer.currentTransmux=null,transmuxer.transmuxQueue.length&&(transmuxer.currentTransmux=transmuxer.transmuxQueue.shift(),"function"==typeof transmuxer.currentTransmux?transmuxer.currentTransmux():processTransmux(transmuxer.currentTransmux))},processAction=(transmuxer,action)=>{transmuxer.postMessage({action:action}),dequeue(transmuxer)},enqueueAction=(action,transmuxer)=>{if(!transmuxer.currentTransmux)return transmuxer.currentTransmux=action,void processAction(transmuxer,action);transmuxer.transmuxQueue.push(processAction.bind(null,transmuxer,action))},transmux=options=>{if(!options.transmuxer.currentTransmux)return options.transmuxer.currentTransmux=options,void processTransmux(options);options.transmuxer.transmuxQueue.push(options)};var segmentTransmuxer_reset=transmuxer=>{enqueueAction("reset",transmuxer)},segmentTransmuxer_createTransmuxer=options=>{const transmuxer=new TransmuxWorker;transmuxer.currentTransmux=null,transmuxer.transmuxQueue=[];const term=transmuxer.terminate;return transmuxer.terminate=()=>(transmuxer.currentTransmux=null,transmuxer.transmuxQueue.length=0,term.call(transmuxer)),transmuxer.postMessage({action:"init",options:options}),transmuxer};const workerCallback=function(options){const transmuxer=options.transmuxer,endAction=options.endAction||options.action,callback=options.callback,message=_extends$1({},options,{endAction:null,transmuxer:null,callback:null}),listenForEndEvent=event=>{event.data.action===endAction&&(transmuxer.removeEventListener("message",listenForEndEvent),event.data.data&&(event.data.data=new Uint8Array(event.data.data,options.byteOffset||0,options.byteLength||event.data.data.byteLength),options.data&&(options.data=event.data.data)),callback(event.data))};if(transmuxer.addEventListener("message",listenForEndEvent),options.data){const isArrayBuffer=options.data instanceof ArrayBuffer;message.byteOffset=isArrayBuffer?0:options.data.byteOffset,message.byteLength=options.data.byteLength;const transfers=[isArrayBuffer?options.data:options.data.buffer];transmuxer.postMessage(message,transfers)}else transmuxer.postMessage(message)},REQUEST_ERRORS_FAILURE=2,REQUEST_ERRORS_TIMEOUT=-101,REQUEST_ERRORS_ABORTED=-102,abortAll=activeXhrs=>{activeXhrs.forEach((xhr=>{xhr.abort()}))},handleErrors=(error,request)=>request.timedout?{status:request.status,message:"HLS request timed-out at URL: "+request.uri,code:REQUEST_ERRORS_TIMEOUT,xhr:request}:request.aborted?{status:request.status,message:"HLS request aborted at URL: "+request.uri,code:REQUEST_ERRORS_ABORTED,xhr:request}:error?{status:request.status,message:"HLS request errored at URL: "+request.uri,code:REQUEST_ERRORS_FAILURE,xhr:request}:"arraybuffer"===request.responseType&&0===request.response.byteLength?{status:request.status,message:"Empty HLS response at URL: "+request.uri,code:REQUEST_ERRORS_FAILURE,xhr:request}:null,handleKeyResponse=(segment,objects,finishProcessingFn)=>(error,request)=>{const response=request.response,errorObj=handleErrors(error,request);if(errorObj)return finishProcessingFn(errorObj,segment);if(16!==response.byteLength)return finishProcessingFn({status:request.status,message:"Invalid HLS key at URL: "+request.uri,code:REQUEST_ERRORS_FAILURE,xhr:request},segment);const view=new DataView(response),bytes=new Uint32Array([view.getUint32(0),view.getUint32(4),view.getUint32(8),view.getUint32(12)]);for(let i=0;i<objects.length;i++)objects[i].bytes=bytes;return finishProcessingFn(null,segment)},parseInitSegment=(segment,callback)=>{const type=detectContainerForBytes(segment.map.bytes);if("mp4"!==type){const uri=segment.map.resolvedUri||segment.map.uri;return callback({internal:!0,message:"Found unsupported ".concat(type||"unknown"," container for initialization segment at URL: ").concat(uri),code:REQUEST_ERRORS_FAILURE})}workerCallback({action:"probeMp4Tracks",data:segment.map.bytes,transmuxer:segment.transmuxer,callback:_ref47=>{let{tracks:tracks,data:data}=_ref47;return segment.map.bytes=data,tracks.forEach((function(track){segment.map.tracks=segment.map.tracks||{},segment.map.tracks[track.type]||(segment.map.tracks[track.type]=track,"number"==typeof track.id&&track.timescale&&(segment.map.timescales=segment.map.timescales||{},segment.map.timescales[track.id]=track.timescale))})),callback(null)}})},handleSegmentResponse=_ref49=>{let{segment:segment,finishProcessingFn:finishProcessingFn,responseType:responseType}=_ref49;return(error,request)=>{const errorObj=handleErrors(error,request);if(errorObj)return finishProcessingFn(errorObj,segment);const newBytes="arraybuffer"!==responseType&&request.responseText?(string=>{const view=new Uint8Array(new ArrayBuffer(string.length));for(let i=0;i<string.length;i++)view[i]=string.charCodeAt(i);return view.buffer})(request.responseText.substring(segment.lastReachedChar||0)):request.response;return segment.stats=(request=>({bandwidth:request.bandwidth,bytesReceived:request.bytesReceived||0,roundTripTime:request.roundTripTime||0}))(request),segment.key?segment.encryptedBytes=new Uint8Array(newBytes):segment.bytes=new Uint8Array(newBytes),finishProcessingFn(null,segment)}},transmuxAndNotify=_ref50=>{let{segment:segment,bytes:bytes,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog}=_ref50;const fmp4Tracks=segment.map&&segment.map.tracks||{},isMuxed=Boolean(fmp4Tracks.audio&&fmp4Tracks.video);let audioStartFn=timingInfoFn.bind(null,segment,"audio","start");const audioEndFn=timingInfoFn.bind(null,segment,"audio","end");let videoStartFn=timingInfoFn.bind(null,segment,"video","start");const videoEndFn=timingInfoFn.bind(null,segment,"video","end");workerCallback({action:"probeTs",transmuxer:segment.transmuxer,data:bytes,baseStartTime:segment.baseStartTime,callback:data=>{segment.bytes=bytes=data.data;const probeResult=data.result;probeResult&&(trackInfoFn(segment,{hasAudio:probeResult.hasAudio,hasVideo:probeResult.hasVideo,isMuxed:isMuxed}),trackInfoFn=null,probeResult.hasAudio&&!isMuxed&&audioStartFn(probeResult.audioStart),probeResult.hasVideo&&videoStartFn(probeResult.videoStart),audioStartFn=null,videoStartFn=null),transmux({bytes:bytes,transmuxer:segment.transmuxer,audioAppendStart:segment.audioAppendStart,gopsToAlignWith:segment.gopsToAlignWith,remux:isMuxed,onData:result=>{result.type="combined"===result.type?"video":result.type,dataFn(segment,result)},onTrackInfo:trackInfo=>{trackInfoFn&&(isMuxed&&(trackInfo.isMuxed=!0),trackInfoFn(segment,trackInfo))},onAudioTimingInfo:audioTimingInfo=>{audioStartFn&&void 0!==audioTimingInfo.start&&(audioStartFn(audioTimingInfo.start),audioStartFn=null),audioEndFn&&void 0!==audioTimingInfo.end&&audioEndFn(audioTimingInfo.end)},onVideoTimingInfo:videoTimingInfo=>{videoStartFn&&void 0!==videoTimingInfo.start&&(videoStartFn(videoTimingInfo.start),videoStartFn=null),videoEndFn&&void 0!==videoTimingInfo.end&&videoEndFn(videoTimingInfo.end)},onVideoSegmentTimingInfo:videoSegmentTimingInfo=>{videoSegmentTimingInfoFn(videoSegmentTimingInfo)},onAudioSegmentTimingInfo:audioSegmentTimingInfo=>{audioSegmentTimingInfoFn(audioSegmentTimingInfo)},onId3:(id3Frames,dispatchType)=>{id3Fn(segment,id3Frames,dispatchType)},onCaptions:captions=>{captionsFn(segment,[captions])},isEndOfTimeline:isEndOfTimeline,onEndedTimeline:()=>{endedTimelineFn()},onTransmuxerLog:onTransmuxerLog,onDone:result=>{doneFn&&(result.type="combined"===result.type?"video":result.type,doneFn(null,segment,result))}})}})},handleSegmentBytes=_ref51=>{let{segment:segment,bytes:bytes,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog}=_ref51,bytesAsUint8Array=new Uint8Array(bytes);if(function(bytes){return findBox(bytes,["moof"]).length>0}(bytesAsUint8Array)){segment.isFmp4=!0;const{tracks:tracks}=segment.map,trackInfo={isFmp4:!0,hasVideo:!!tracks.video,hasAudio:!!tracks.audio};tracks.audio&&tracks.audio.codec&&"enca"!==tracks.audio.codec&&(trackInfo.audioCodec=tracks.audio.codec),tracks.video&&tracks.video.codec&&"encv"!==tracks.video.codec&&(trackInfo.videoCodec=tracks.video.codec),tracks.video&&tracks.audio&&(trackInfo.isMuxed=!0),trackInfoFn(segment,trackInfo);const finishLoading=captions=>{dataFn(segment,{data:bytesAsUint8Array,type:trackInfo.hasAudio&&!trackInfo.isMuxed?"audio":"video"}),captions&&captions.length&&captionsFn(segment,captions),doneFn(null,segment,{})};workerCallback({action:"probeMp4StartTime",timescales:segment.map.timescales,data:bytesAsUint8Array,transmuxer:segment.transmuxer,callback:_ref52=>{let{data:data,startTime:startTime}=_ref52;bytes=data.buffer,segment.bytes=bytesAsUint8Array=data,trackInfo.hasAudio&&!trackInfo.isMuxed&&timingInfoFn(segment,"audio","start",startTime),trackInfo.hasVideo&&timingInfoFn(segment,"video","start",startTime),tracks.video&&data.byteLength&&segment.transmuxer?workerCallback({action:"pushMp4Captions",endAction:"mp4Captions",transmuxer:segment.transmuxer,data:bytesAsUint8Array,timescales:segment.map.timescales,trackIds:[tracks.video.id],callback:message=>{bytes=message.data.buffer,segment.bytes=bytesAsUint8Array=message.data,message.logs.forEach((function(log){onTransmuxerLog(merge(log,{stream:"mp4CaptionParser"}))})),finishLoading(message.captions)}}):finishLoading()}})}else if(segment.transmuxer){if(void 0===segment.container&&(segment.container=detectContainerForBytes(bytesAsUint8Array)),"ts"!==segment.container&&"aac"!==segment.container)return trackInfoFn(segment,{hasAudio:!1,hasVideo:!1}),void doneFn(null,segment,{});transmuxAndNotify({segment:segment,bytes:bytes,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog})}else doneFn(null,segment,{})},decrypt=function(_ref53,callback){let{id:id,key:key,encryptedBytes:encryptedBytes,decryptionWorker:decryptionWorker}=_ref53;const decryptionHandler=event=>{if(event.data.source===id){decryptionWorker.removeEventListener("message",decryptionHandler);const decrypted=event.data.decrypted;callback(new Uint8Array(decrypted.bytes,decrypted.byteOffset,decrypted.byteLength))}};let keyBytes;decryptionWorker.addEventListener("message",decryptionHandler),keyBytes=key.bytes.slice?key.bytes.slice():new Uint32Array(Array.prototype.slice.call(key.bytes)),decryptionWorker.postMessage(createTransferableMessage({source:id,encrypted:encryptedBytes,key:keyBytes,iv:key.iv}),[encryptedBytes.buffer,keyBytes.buffer])},waitForCompletion=_ref55=>{let{activeXhrs:activeXhrs,decryptionWorker:decryptionWorker,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog}=_ref55,count=0,didError=!1;return(error,segment)=>{if(!didError){if(error)return didError=!0,abortAll(activeXhrs),doneFn(error,segment);if(count+=1,count===activeXhrs.length){const segmentFinish=function(){if(segment.encryptedBytes)return(_ref54=>{let{decryptionWorker:decryptionWorker,segment:segment,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog}=_ref54;decrypt({id:segment.requestId,key:segment.key,encryptedBytes:segment.encryptedBytes,decryptionWorker:decryptionWorker},(decryptedBytes=>{segment.bytes=decryptedBytes,handleSegmentBytes({segment:segment,bytes:segment.bytes,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog})}))})({decryptionWorker:decryptionWorker,segment:segment,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog});handleSegmentBytes({segment:segment,bytes:segment.bytes,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog})};if(segment.endOfAllRequests=Date.now(),segment.map&&segment.map.encryptedBytes&&!segment.map.bytes)return decrypt({decryptionWorker:decryptionWorker,id:segment.requestId+"-init",encryptedBytes:segment.map.encryptedBytes,key:segment.map.key},(decryptedBytes=>{segment.map.bytes=decryptedBytes,parseInitSegment(segment,(parseError=>{if(parseError)return abortAll(activeXhrs),doneFn(parseError,segment);segmentFinish()}))}));segmentFinish()}}}},handleProgress=_ref57=>{let{segment:segment,progressFn:progressFn,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn}=_ref57;return event=>{if(!event.target.aborted)return segment.stats=merge(segment.stats,(progressEvent=>{const request=progressEvent.target,stats={bandwidth:1/0,bytesReceived:0,roundTripTime:Date.now()-request.requestTime||0};return stats.bytesReceived=progressEvent.loaded,stats.bandwidth=Math.floor(stats.bytesReceived/stats.roundTripTime*8*1e3),stats})(event)),!segment.stats.firstBytesReceivedAt&&segment.stats.bytesReceived&&(segment.stats.firstBytesReceivedAt=Date.now()),progressFn(event,segment)}},mediaSegmentRequest=_ref58=>{let{xhr:xhr,xhrOptions:xhrOptions,decryptionWorker:decryptionWorker,segment:segment,abortFn:abortFn,progressFn:progressFn,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog}=_ref58;const activeXhrs=[],finishProcessingFn=waitForCompletion({activeXhrs:activeXhrs,decryptionWorker:decryptionWorker,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog});if(segment.key&&!segment.key.bytes){const objects=[segment.key];segment.map&&!segment.map.bytes&&segment.map.key&&segment.map.key.resolvedUri===segment.key.resolvedUri&&objects.push(segment.map.key);const keyXhr=xhr(merge(xhrOptions,{uri:segment.key.resolvedUri,responseType:"arraybuffer"}),handleKeyResponse(segment,objects,finishProcessingFn));activeXhrs.push(keyXhr)}if(segment.map&&!segment.map.bytes){if(segment.map.key&&(!segment.key||segment.key.resolvedUri!==segment.map.key.resolvedUri)){const mapKeyXhr=xhr(merge(xhrOptions,{uri:segment.map.key.resolvedUri,responseType:"arraybuffer"}),handleKeyResponse(segment,[segment.map.key],finishProcessingFn));activeXhrs.push(mapKeyXhr)}const initSegmentOptions=merge(xhrOptions,{uri:segment.map.resolvedUri,responseType:"arraybuffer",headers:segmentXhrHeaders(segment.map)}),initSegmentRequestCallback=(_ref48=>{let{segment:segment,finishProcessingFn:finishProcessingFn}=_ref48;return(error,request)=>{const errorObj=handleErrors(error,request);if(errorObj)return finishProcessingFn(errorObj,segment);const bytes=new Uint8Array(request.response);if(segment.map.key)return segment.map.encryptedBytes=bytes,finishProcessingFn(null,segment);segment.map.bytes=bytes,parseInitSegment(segment,(function(parseError){if(parseError)return parseError.xhr=request,parseError.status=request.status,finishProcessingFn(parseError,segment);finishProcessingFn(null,segment)}))}})({segment:segment,finishProcessingFn:finishProcessingFn}),initSegmentXhr=xhr(initSegmentOptions,initSegmentRequestCallback);activeXhrs.push(initSegmentXhr)}const segmentRequestOptions=merge(xhrOptions,{uri:segment.part&&segment.part.resolvedUri||segment.resolvedUri,responseType:"arraybuffer",headers:segmentXhrHeaders(segment)}),segmentXhr=xhr(segmentRequestOptions,handleSegmentResponse({segment:segment,finishProcessingFn:finishProcessingFn,responseType:segmentRequestOptions.responseType}));segmentXhr.addEventListener("progress",handleProgress({segment:segment,progressFn:progressFn,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn})),activeXhrs.push(segmentXhr);const loadendState={};return activeXhrs.forEach((activeXhr=>{activeXhr.addEventListener("loadend",(_ref56=>{let{loadendState:loadendState,abortFn:abortFn}=_ref56;return event=>{event.target.aborted&&abortFn&&!loadendState.calledAbortFn&&(abortFn(),loadendState.calledAbortFn=!0)}})({loadendState:loadendState,abortFn:abortFn}))})),()=>abortAll(activeXhrs)},logFn$1=logger("CodecUtils"),isMaat=(main,media)=>{const mediaAttributes=media.attributes||{};return main&&main.mediaGroups&&main.mediaGroups.AUDIO&&mediaAttributes.AUDIO&&main.mediaGroups.AUDIO[mediaAttributes.AUDIO]},unwrapCodecList=function(codecList){const codecs={};return codecList.forEach((_ref59=>{let{mediaType:mediaType,type:type,details:details}=_ref59;codecs[mediaType]=codecs[mediaType]||[],codecs[mediaType].push(translateLegacyCodec("".concat(type).concat(details)))})),Object.keys(codecs).forEach((function(mediaType){if(codecs[mediaType].length>1)return logFn$1("multiple ".concat(mediaType," codecs found as attributes: ").concat(codecs[mediaType].join(", "),". Setting playlist codecs to null so that we wait for mux.js to probe segments for real codecs.")),void(codecs[mediaType]=null);codecs[mediaType]=codecs[mediaType][0]})),codecs},codecCount=function(codecObj){let count=0;return codecObj.audio&&count++,codecObj.video&&count++,count},codecsForPlaylist=function(main,media){const mediaAttributes=media.attributes||{},codecInfo=unwrapCodecList(function(media){const mediaAttributes=media.attributes||{};if(mediaAttributes.CODECS)return parseCodecs(mediaAttributes.CODECS)}(media)||[]);if(isMaat(main,media)&&!codecInfo.audio&&!((main,media)=>{if(!isMaat(main,media))return!0;const mediaAttributes=media.attributes||{},audioGroup=main.mediaGroups.AUDIO[mediaAttributes.AUDIO];for(const groupId in audioGroup)if(!audioGroup[groupId].uri&&!audioGroup[groupId].playlists)return!0;return!1})(main,media)){const defaultCodecs=unwrapCodecList(function(master,audioGroupId){if(!master.mediaGroups.AUDIO||!audioGroupId)return null;var audioGroup=master.mediaGroups.AUDIO[audioGroupId];if(!audioGroup)return null;for(var name in audioGroup){var audioType=audioGroup[name];if(audioType.default&&audioType.playlists)return parseCodecs(audioType.playlists[0].attributes.CODECS)}return null}(main,mediaAttributes.AUDIO)||[]);defaultCodecs.audio&&(codecInfo.audio=defaultCodecs.audio)}return codecInfo},logFn=logger("PlaylistSelector"),representationToString=function(representation){if(!representation||!representation.playlist)return;const playlist=representation.playlist;return JSON.stringify({id:playlist.id,bandwidth:representation.bandwidth,width:representation.width,height:representation.height,codecs:playlist.attributes&&playlist.attributes.CODECS||""})},safeGetComputedStyle=function(el,property){if(!el)return"";const result=window.getComputedStyle(el);return result?result[property]:""},stableSort=function(array,sortFn){const newArray=array.slice();array.sort((function(left,right){const cmp=sortFn(left,right);return 0===cmp?newArray.indexOf(left)-newArray.indexOf(right):cmp}))},comparePlaylistBandwidth=function(left,right){let leftBandwidth,rightBandwidth;return left.attributes.BANDWIDTH&&(leftBandwidth=left.attributes.BANDWIDTH),leftBandwidth=leftBandwidth||window.Number.MAX_VALUE,right.attributes.BANDWIDTH&&(rightBandwidth=right.attributes.BANDWIDTH),rightBandwidth=rightBandwidth||window.Number.MAX_VALUE,leftBandwidth-rightBandwidth};let simpleSelector=function(main,playerBandwidth,playerWidth,playerHeight,limitRenditionByPlayerDimensions,playlistController){if(!main)return;const options={bandwidth:playerBandwidth,width:playerWidth,height:playerHeight,limitRenditionByPlayerDimensions:limitRenditionByPlayerDimensions};let playlists=main.playlists;Playlist.isAudioOnly(main)&&(playlists=playlistController.getAudioTrackPlaylists_(),options.audioOnly=!0);let sortedPlaylistReps=playlists.map((playlist=>{let bandwidth;const width=playlist.attributes&&playlist.attributes.RESOLUTION&&playlist.attributes.RESOLUTION.width,height=playlist.attributes&&playlist.attributes.RESOLUTION&&playlist.attributes.RESOLUTION.height;return bandwidth=playlist.attributes&&playlist.attributes.BANDWIDTH,bandwidth=bandwidth||window.Number.MAX_VALUE,{bandwidth:bandwidth,width:width,height:height,playlist:playlist}}));stableSort(sortedPlaylistReps,((left,right)=>left.bandwidth-right.bandwidth)),sortedPlaylistReps=sortedPlaylistReps.filter((rep=>!Playlist.isIncompatible(rep.playlist)));let enabledPlaylistReps=sortedPlaylistReps.filter((rep=>Playlist.isEnabled(rep.playlist)));enabledPlaylistReps.length||(enabledPlaylistReps=sortedPlaylistReps.filter((rep=>!Playlist.isDisabled(rep.playlist))));const bandwidthPlaylistReps=enabledPlaylistReps.filter((rep=>rep.bandwidth*Config.BANDWIDTH_VARIANCE<playerBandwidth));let highestRemainingBandwidthRep=bandwidthPlaylistReps[bandwidthPlaylistReps.length-1];const bandwidthBestRep=bandwidthPlaylistReps.filter((rep=>rep.bandwidth===highestRemainingBandwidthRep.bandwidth))[0];if(!1===limitRenditionByPlayerDimensions){const chosenRep=bandwidthBestRep||enabledPlaylistReps[0]||sortedPlaylistReps[0];if(chosenRep&&chosenRep.playlist){let type="sortedPlaylistReps";return bandwidthBestRep&&(type="bandwidthBestRep"),enabledPlaylistReps[0]&&(type="enabledPlaylistReps"),logFn("choosing ".concat(representationToString(chosenRep)," using ").concat(type," with options"),options),chosenRep.playlist}return logFn("could not choose a playlist with options",options),null}const haveResolution=bandwidthPlaylistReps.filter((rep=>rep.width&&rep.height));stableSort(haveResolution,((left,right)=>left.width-right.width));const resolutionBestRepList=haveResolution.filter((rep=>rep.width===playerWidth&&rep.height===playerHeight));highestRemainingBandwidthRep=resolutionBestRepList[resolutionBestRepList.length-1];const resolutionBestRep=resolutionBestRepList.filter((rep=>rep.bandwidth===highestRemainingBandwidthRep.bandwidth))[0];let resolutionPlusOneList,resolutionPlusOneSmallest,resolutionPlusOneRep,leastPixelDiffRep;if(resolutionBestRep||(resolutionPlusOneList=haveResolution.filter((rep=>rep.width>playerWidth||rep.height>playerHeight)),resolutionPlusOneSmallest=resolutionPlusOneList.filter((rep=>rep.width===resolutionPlusOneList[0].width&&rep.height===resolutionPlusOneList[0].height)),highestRemainingBandwidthRep=resolutionPlusOneSmallest[resolutionPlusOneSmallest.length-1],resolutionPlusOneRep=resolutionPlusOneSmallest.filter((rep=>rep.bandwidth===highestRemainingBandwidthRep.bandwidth))[0]),playlistController.leastPixelDiffSelector){const leastPixelDiffList=haveResolution.map((rep=>(rep.pixelDiff=Math.abs(rep.width-playerWidth)+Math.abs(rep.height-playerHeight),rep)));stableSort(leastPixelDiffList,((left,right)=>left.pixelDiff===right.pixelDiff?right.bandwidth-left.bandwidth:left.pixelDiff-right.pixelDiff)),leastPixelDiffRep=leastPixelDiffList[0]}const chosenRep=leastPixelDiffRep||resolutionPlusOneRep||resolutionBestRep||bandwidthBestRep||enabledPlaylistReps[0]||sortedPlaylistReps[0];if(chosenRep&&chosenRep.playlist){let type="sortedPlaylistReps";return leastPixelDiffRep?type="leastPixelDiffRep":resolutionPlusOneRep?type="resolutionPlusOneRep":resolutionBestRep?type="resolutionBestRep":bandwidthBestRep?type="bandwidthBestRep":enabledPlaylistReps[0]&&(type="enabledPlaylistReps"),logFn("choosing ".concat(representationToString(chosenRep)," using ").concat(type," with options"),options),chosenRep.playlist}return logFn("could not choose a playlist with options",options),null};const lastBandwidthSelector=function(){const pixelRatio=this.useDevicePixelRatio&&window.devicePixelRatio||1;return simpleSelector(this.playlists.main,this.systemBandwidth,parseInt(safeGetComputedStyle(this.tech_.el(),"width"),10)*pixelRatio,parseInt(safeGetComputedStyle(this.tech_.el(),"height"),10)*pixelRatio,this.limitRenditionByPlayerDimensions,this.playlistController_)},addMetadata=_ref61=>{let{inbandTextTracks:inbandTextTracks,metadataArray:metadataArray,timestampOffset:timestampOffset,videoDuration:videoDuration}=_ref61;if(!metadataArray)return;const Cue=window.WebKitDataCue||window.VTTCue,metadataTrack=inbandTextTracks.metadataTrack_;if(!metadataTrack)return;if(metadataArray.forEach((metadata=>{const time=metadata.cueTime+timestampOffset;!("number"!=typeof time||window.isNaN(time)||time<0)&&time<1/0&&metadata.frames.forEach((frame=>{const cue=new Cue(time,time,frame.value||frame.url||frame.data||"");cue.frame=frame,cue.value=frame,function(cue){Object.defineProperties(cue.frame,{id:{get:()=>(videojs.log.warn("cue.frame.id is deprecated. Use cue.value.key instead."),cue.value.key)},value:{get:()=>(videojs.log.warn("cue.frame.value is deprecated. Use cue.value.data instead."),cue.value.data)},privateData:{get:()=>(videojs.log.warn("cue.frame.privateData is deprecated. Use cue.value.data instead."),cue.value.data)}})}(cue),metadataTrack.addCue(cue)}))})),!metadataTrack.cues||!metadataTrack.cues.length)return;const cues=metadataTrack.cues,cuesArray=[];for(let i=0;i<cues.length;i++)cues[i]&&cuesArray.push(cues[i]);const cuesGroupedByStartTime=cuesArray.reduce(((obj,cue)=>{const timeSlot=obj[cue.startTime]||[];return timeSlot.push(cue),obj[cue.startTime]=timeSlot,obj}),{}),sortedStartTimes=Object.keys(cuesGroupedByStartTime).sort(((a,b)=>Number(a)-Number(b)));sortedStartTimes.forEach(((startTime,idx)=>{const cueGroup=cuesGroupedByStartTime[startTime],nextTime=Number(sortedStartTimes[idx+1])||videoDuration;cueGroup.forEach((cue=>{cue.endTime=nextTime}))}))},removeCuesFromTrack=function(start,end,track){let i,cue;if(track&&track.cues)for(i=track.cues.length;i--;)cue=track.cues[i],cue.startTime>=start&&cue.endTime<=end&&track.removeCue(cue)},finite=num=>"number"==typeof num&&isFinite(num),segmentInfoString=segmentInfo=>{const{startOfSegment:startOfSegment,duration:duration,segment:segment,part:part,playlist:{mediaSequence:seq,id:id,segments:segments=[]},mediaIndex:index,partIndex:partIndex,timeline:timeline}=segmentInfo,segmentLen=segments.length-1;let selection="mediaIndex/partIndex increment";segmentInfo.getMediaInfoForTime?selection="getMediaInfoForTime (".concat(segmentInfo.getMediaInfoForTime,")"):segmentInfo.isSyncRequest&&(selection="getSyncSegmentCandidate (isSyncRequest)"),segmentInfo.independent&&(selection+=" with independent ".concat(segmentInfo.independent));const hasPartIndex="number"==typeof partIndex,name=segmentInfo.segment.uri?"segment":"pre-segment",zeroBasedPartCount=hasPartIndex?getKnownPartCount({preloadSegment:segment})-1:0;return"".concat(name," [").concat(seq+index,"/").concat(seq+segmentLen,"]")+(hasPartIndex?" part [".concat(partIndex,"/").concat(zeroBasedPartCount,"]"):"")+" segment start/end [".concat(segment.start," => ").concat(segment.end,"]")+(hasPartIndex?" part start/end [".concat(part.start," => ").concat(part.end,"]"):"")+" startOfSegment [".concat(startOfSegment,"]")+" duration [".concat(duration,"]")+" timeline [".concat(timeline,"]")+" selected by [".concat(selection,"]")+" playlist [".concat(id,"]")},timingInfoPropertyForMedia=mediaType=>"".concat(mediaType,"TimingInfo"),shouldWaitForTimelineChange=_ref63=>{let{timelineChangeController:timelineChangeController,currentTimeline:currentTimeline,segmentTimeline:segmentTimeline,loaderType:loaderType,audioDisabled:audioDisabled}=_ref63;if(currentTimeline===segmentTimeline)return!1;if("audio"===loaderType){const lastMainTimelineChange=timelineChangeController.lastTimelineChange({type:"main"});return!lastMainTimelineChange||lastMainTimelineChange.to!==segmentTimeline}if("main"===loaderType&&audioDisabled){const pendingAudioTimelineChange=timelineChangeController.pendingTimelineChange({type:"audio"});return!pendingAudioTimelineChange||pendingAudioTimelineChange.to!==segmentTimeline}return!1},segmentTooLong=_ref64=>{let{segmentDuration:segmentDuration,maxDuration:maxDuration}=_ref64;return!!segmentDuration&&Math.round(segmentDuration)>maxDuration+.03333333333333333},getTroublesomeSegmentDurationMessage=(segmentInfo,sourceType)=>{if("hls"!==sourceType)return null;const segmentDuration=(timingInfos=>{let maxDuration=0;return["video","audio"].forEach((function(type){const typeTimingInfo=timingInfos["".concat(type,"TimingInfo")];if(!typeTimingInfo)return;const{start:start,end:end}=typeTimingInfo;let duration;"bigint"==typeof start||"bigint"==typeof end?duration=window.BigInt(end)-window.BigInt(start):"number"==typeof start&&"number"==typeof end&&(duration=end-start),void 0!==duration&&duration>maxDuration&&(maxDuration=duration)})),"bigint"==typeof maxDuration&&maxDuration<Number.MAX_SAFE_INTEGER&&(maxDuration=Number(maxDuration)),maxDuration})({audioTimingInfo:segmentInfo.audioTimingInfo,videoTimingInfo:segmentInfo.videoTimingInfo});if(!segmentDuration)return null;const targetDuration=segmentInfo.playlist.targetDuration,isSegmentWayTooLong=segmentTooLong({segmentDuration:segmentDuration,maxDuration:2*targetDuration}),isSegmentSlightlyTooLong=segmentTooLong({segmentDuration:segmentDuration,maxDuration:targetDuration}),segmentTooLongMessage="Segment with index ".concat(segmentInfo.mediaIndex," ")+"from playlist ".concat(segmentInfo.playlist.id," ")+"has a duration of ".concat(segmentDuration," ")+"when the reported duration is ".concat(segmentInfo.duration," ")+"and the target duration is ".concat(targetDuration,". ")+"For HLS content, a duration in excess of the target duration may result in playback issues. See the HLS specification section on EXT-X-TARGETDURATION for more details: https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.3.1";return isSegmentWayTooLong||isSegmentSlightlyTooLong?{severity:isSegmentWayTooLong?"warn":"info",message:segmentTooLongMessage}:null};class SegmentLoader extends videojs.EventTarget{constructor(settings){if(super(),!settings)throw new TypeError("Initialization settings are required");if("function"!=typeof settings.currentTime)throw new TypeError("No currentTime getter specified");if(!settings.mediaSource)throw new TypeError("No MediaSource specified");this.bandwidth=settings.bandwidth,this.throughput={rate:0,count:0},this.roundTrip=NaN,this.resetStats_(),this.mediaIndex=null,this.partIndex=null,this.hasPlayed_=settings.hasPlayed,this.currentTime_=settings.currentTime,this.seekable_=settings.seekable,this.seeking_=settings.seeking,this.duration_=settings.duration,this.mediaSource_=settings.mediaSource,this.vhs_=settings.vhs,this.loaderType_=settings.loaderType,this.currentMediaInfo_=void 0,this.startingMediaInfo_=void 0,this.segmentMetadataTrack_=settings.segmentMetadataTrack,this.goalBufferLength_=settings.goalBufferLength,this.sourceType_=settings.sourceType,this.sourceUpdater_=settings.sourceUpdater,this.inbandTextTracks_=settings.inbandTextTracks,this.state_="INIT",this.timelineChangeController_=settings.timelineChangeController,this.shouldSaveSegmentTimingInfo_=!0,this.parse708captions_=settings.parse708captions,this.useDtsForTimestampOffset_=settings.useDtsForTimestampOffset,this.captionServices_=settings.captionServices,this.exactManifestTimings=settings.exactManifestTimings,this.checkBufferTimeout_=null,this.error_=void 0,this.currentTimeline_=-1,this.pendingSegment_=null,this.xhrOptions_=null,this.pendingSegments_=[],this.audioDisabled_=!1,this.isPendingTimestampOffset_=!1,this.gopBuffer_=[],this.timeMapping_=0,this.safeAppend_=videojs.browser.IE_VERSION>=11,this.appendInitSegment_={audio:!0,video:!0},this.playlistOfLastInitSegment_={audio:null,video:null},this.callQueue_=[],this.loadQueue_=[],this.metadataQueue_={id3:[],caption:[]},this.waitingOnRemove_=!1,this.quotaExceededErrorRetryTimeout_=null,this.activeInitSegmentId_=null,this.initSegments_={},this.cacheEncryptionKeys_=settings.cacheEncryptionKeys,this.keyCache_={},this.decrypter_=settings.decrypter,this.syncController_=settings.syncController,this.syncPoint_={segmentIndex:0,time:0},this.transmuxer_=this.createTransmuxer_(),this.triggerSyncInfoUpdate_=()=>this.trigger("syncinfoupdate"),this.syncController_.on("syncinfoupdate",this.triggerSyncInfoUpdate_),this.mediaSource_.addEventListener("sourceopen",(()=>{this.isEndOfStream_()||(this.ended_=!1)})),this.fetchAtBuffer_=!1,this.logger_=logger("SegmentLoader[".concat(this.loaderType_,"]")),Object.defineProperty(this,"state",{get(){return this.state_},set(newState){newState!==this.state_&&(this.logger_("".concat(this.state_," -> ").concat(newState)),this.state_=newState,this.trigger("statechange"))}}),this.sourceUpdater_.on("ready",(()=>{this.hasEnoughInfoToAppend_()&&this.processCallQueue_()})),"main"===this.loaderType_&&this.timelineChangeController_.on("pendingtimelinechange",(()=>{this.hasEnoughInfoToAppend_()&&this.processCallQueue_()})),"audio"===this.loaderType_&&this.timelineChangeController_.on("timelinechange",(()=>{this.hasEnoughInfoToLoad_()&&this.processLoadQueue_(),this.hasEnoughInfoToAppend_()&&this.processCallQueue_()}))}createTransmuxer_(){return segmentTransmuxer_createTransmuxer({remux:!1,alignGopsAtEnd:this.safeAppend_,keepOriginalTimestamps:!0,parse708captions:this.parse708captions_,captionServices:this.captionServices_})}resetStats_(){this.mediaBytesTransferred=0,this.mediaRequests=0,this.mediaRequestsAborted=0,this.mediaRequestsTimedout=0,this.mediaRequestsErrored=0,this.mediaTransferDuration=0,this.mediaSecondsLoaded=0,this.mediaAppends=0}dispose(){this.trigger("dispose"),this.state="DISPOSED",this.pause(),this.abort_(),this.transmuxer_&&this.transmuxer_.terminate(),this.resetStats_(),this.checkBufferTimeout_&&window.clearTimeout(this.checkBufferTimeout_),this.syncController_&&this.triggerSyncInfoUpdate_&&this.syncController_.off("syncinfoupdate",this.triggerSyncInfoUpdate_),this.off()}setAudio(enable){this.audioDisabled_=!enable,enable?this.appendInitSegment_.audio=!0:this.sourceUpdater_.removeAudio(0,this.duration_())}abort(){"WAITING"===this.state?(this.abort_(),this.state="READY",this.paused()||this.monitorBuffer_()):this.pendingSegment_&&(this.pendingSegment_=null)}abort_(){this.pendingSegment_&&this.pendingSegment_.abortRequests&&this.pendingSegment_.abortRequests(),this.pendingSegment_=null,this.callQueue_=[],this.loadQueue_=[],this.metadataQueue_.id3=[],this.metadataQueue_.caption=[],this.timelineChangeController_.clearPendingTimelineChange(this.loaderType_),this.waitingOnRemove_=!1,window.clearTimeout(this.quotaExceededErrorRetryTimeout_),this.quotaExceededErrorRetryTimeout_=null}checkForAbort_(requestId){return"APPENDING"!==this.state||this.pendingSegment_?!this.pendingSegment_||this.pendingSegment_.requestId!==requestId:(this.state="READY",!0)}error(error){return void 0!==error&&(this.logger_("error occurred:",error),this.error_=error),this.pendingSegment_=null,this.error_}endOfStream(){this.ended_=!0,this.transmuxer_&&segmentTransmuxer_reset(this.transmuxer_),this.gopBuffer_.length=0,this.pause(),this.trigger("ended")}buffered_(){const trackInfo=this.getMediaInfo_();if(!this.sourceUpdater_||!trackInfo)return createTimeRanges();if("main"===this.loaderType_){const{hasAudio:hasAudio,hasVideo:hasVideo,isMuxed:isMuxed}=trackInfo;if(hasVideo&&hasAudio&&!this.audioDisabled_&&!isMuxed)return this.sourceUpdater_.buffered();if(hasVideo)return this.sourceUpdater_.videoBuffered()}return this.sourceUpdater_.audioBuffered()}initSegmentForMap(map){let set=arguments.length>1&&void 0!==arguments[1]&&arguments[1];if(!map)return null;const id=initSegmentId(map);let storedMap=this.initSegments_[id];return set&&!storedMap&&map.bytes&&(this.initSegments_[id]=storedMap={resolvedUri:map.resolvedUri,byterange:map.byterange,bytes:map.bytes,tracks:map.tracks,timescales:map.timescales}),storedMap||map}segmentKey(key){let set=arguments.length>1&&void 0!==arguments[1]&&arguments[1];if(!key)return null;const id=segmentKeyId(key);let storedKey=this.keyCache_[id];this.cacheEncryptionKeys_&&set&&!storedKey&&key.bytes&&(this.keyCache_[id]=storedKey={resolvedUri:key.resolvedUri,bytes:key.bytes});const result={resolvedUri:(storedKey||key).resolvedUri};return storedKey&&(result.bytes=storedKey.bytes),result}couldBeginLoading_(){return this.playlist_&&!this.paused()}load(){if(this.monitorBuffer_(),this.playlist_)return"INIT"===this.state&&this.couldBeginLoading_()?this.init_():void(!this.couldBeginLoading_()||"READY"!==this.state&&"INIT"!==this.state||(this.state="READY"))}init_(){return this.state="READY",this.resetEverything(),this.monitorBuffer_()}playlist(newPlaylist){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};if(!newPlaylist)return;const oldPlaylist=this.playlist_,segmentInfo=this.pendingSegment_;this.playlist_=newPlaylist,this.xhrOptions_=options,"INIT"===this.state&&(newPlaylist.syncInfo={mediaSequence:newPlaylist.mediaSequence,time:0},"main"===this.loaderType_&&this.syncController_.setDateTimeMappingForStart(newPlaylist));let oldId=null;if(oldPlaylist&&(oldPlaylist.id?oldId=oldPlaylist.id:oldPlaylist.uri&&(oldId=oldPlaylist.uri)),this.logger_("playlist update [".concat(oldId," => ").concat(newPlaylist.id||newPlaylist.uri,"]")),this.trigger("syncinfoupdate"),"INIT"===this.state&&this.couldBeginLoading_())return this.init_();if(!oldPlaylist||oldPlaylist.uri!==newPlaylist.uri)return null!==this.mediaIndex&&(newPlaylist.endList?this.resyncLoader():this.resetLoader()),this.currentMediaInfo_=void 0,void this.trigger("playlistupdate");const mediaSequenceDiff=newPlaylist.mediaSequence-oldPlaylist.mediaSequence;if(this.logger_("live window shift [".concat(mediaSequenceDiff,"]")),null!==this.mediaIndex)if(this.mediaIndex-=mediaSequenceDiff,this.mediaIndex<0)this.mediaIndex=null,this.partIndex=null;else{const segment=this.playlist_.segments[this.mediaIndex];if(this.partIndex&&(!segment.parts||!segment.parts.length||!segment.parts[this.partIndex])){const mediaIndex=this.mediaIndex;this.logger_("currently processing part (index ".concat(this.partIndex,") no longer exists.")),this.resetLoader(),this.mediaIndex=mediaIndex}}segmentInfo&&(segmentInfo.mediaIndex-=mediaSequenceDiff,segmentInfo.mediaIndex<0?(segmentInfo.mediaIndex=null,segmentInfo.partIndex=null):(segmentInfo.mediaIndex>=0&&(segmentInfo.segment=newPlaylist.segments[segmentInfo.mediaIndex]),segmentInfo.partIndex>=0&&segmentInfo.segment.parts&&(segmentInfo.part=segmentInfo.segment.parts[segmentInfo.partIndex]))),this.syncController_.saveExpiredSegmentInfo(oldPlaylist,newPlaylist)}pause(){this.checkBufferTimeout_&&(window.clearTimeout(this.checkBufferTimeout_),this.checkBufferTimeout_=null)}paused(){return null===this.checkBufferTimeout_}resetEverything(done){this.ended_=!1,this.activeInitSegmentId_=null,this.appendInitSegment_={audio:!0,video:!0},this.resetLoader(),this.remove(0,1/0,done),this.transmuxer_&&(this.transmuxer_.postMessage({action:"clearAllMp4Captions"}),this.transmuxer_.postMessage({action:"reset"}))}resetLoader(){this.fetchAtBuffer_=!1,this.resyncLoader()}resyncLoader(){this.transmuxer_&&segmentTransmuxer_reset(this.transmuxer_),this.mediaIndex=null,this.partIndex=null,this.syncPoint_=null,this.isPendingTimestampOffset_=!1,this.callQueue_=[],this.loadQueue_=[],this.metadataQueue_.id3=[],this.metadataQueue_.caption=[],this.abort(),this.transmuxer_&&this.transmuxer_.postMessage({action:"clearParsedMp4Captions"})}remove(start,end){let done=arguments.length>2&&void 0!==arguments[2]?arguments[2]:()=>{},force=arguments.length>3&&void 0!==arguments[3]&&arguments[3];if(end===1/0&&(end=this.duration_()),end<=start)return void this.logger_("skipping remove because end ${end} is <= start ${start}");if(!this.sourceUpdater_||!this.getMediaInfo_())return void this.logger_("skipping remove because no source updater or starting media info");let removesRemaining=1;const removeFinished=()=>{removesRemaining--,0===removesRemaining&&done()};!force&&this.audioDisabled_||(removesRemaining++,this.sourceUpdater_.removeAudio(start,end,removeFinished)),(force||"main"===this.loaderType_)&&(this.gopBuffer_=((buffer,start,end,mapping)=>{const startPts=Math.ceil((start-mapping)*clock_1),endPts=Math.ceil((end-mapping)*clock_1),updatedBuffer=buffer.slice();let i=buffer.length;for(;i--&&!(buffer[i].pts<=endPts););if(-1===i)return updatedBuffer;let j=i+1;for(;j--&&!(buffer[j].pts<=startPts););return j=Math.max(j,0),updatedBuffer.splice(j,i-j+1),updatedBuffer})(this.gopBuffer_,start,end,this.timeMapping_),removesRemaining++,this.sourceUpdater_.removeVideo(start,end,removeFinished));for(const track in this.inbandTextTracks_)removeCuesFromTrack(start,end,this.inbandTextTracks_[track]);removeCuesFromTrack(start,end,this.segmentMetadataTrack_),removeFinished()}monitorBuffer_(){this.checkBufferTimeout_&&window.clearTimeout(this.checkBufferTimeout_),this.checkBufferTimeout_=window.setTimeout(this.monitorBufferTick_.bind(this),1)}monitorBufferTick_(){"READY"===this.state&&this.fillBuffer_(),this.checkBufferTimeout_&&window.clearTimeout(this.checkBufferTimeout_),this.checkBufferTimeout_=window.setTimeout(this.monitorBufferTick_.bind(this),500)}fillBuffer_(){if(this.sourceUpdater_.updating())return;const segmentInfo=this.chooseNextRequest_();segmentInfo&&("number"==typeof segmentInfo.timestampOffset&&(this.isPendingTimestampOffset_=!1,this.timelineChangeController_.pendingTimelineChange({type:this.loaderType_,from:this.currentTimeline_,to:segmentInfo.timeline})),this.loadSegment_(segmentInfo))}isEndOfStream_(){let mediaIndex=arguments.length>0&&void 0!==arguments[0]?arguments[0]:this.mediaIndex,playlist=arguments.length>1&&void 0!==arguments[1]?arguments[1]:this.playlist_,partIndex=arguments.length>2&&void 0!==arguments[2]?arguments[2]:this.partIndex;if(!playlist||!this.mediaSource_)return!1;const segment="number"==typeof mediaIndex&&playlist.segments[mediaIndex],appendedLastSegment=mediaIndex+1===playlist.segments.length,appendedLastPart=!segment||!segment.parts||partIndex+1===segment.parts.length;return playlist.endList&&"open"===this.mediaSource_.readyState&&appendedLastSegment&&appendedLastPart}chooseNextRequest_(){const buffered=this.buffered_(),bufferedEnd=lastBufferedEnd(buffered)||0,bufferedTime=timeAheadOf(buffered,this.currentTime_()),preloaded=!this.hasPlayed_()&&bufferedTime>=1,haveEnoughBuffer=bufferedTime>=this.goalBufferLength_(),segments=this.playlist_.segments;if(!segments.length||preloaded||haveEnoughBuffer)return null;this.syncPoint_=this.syncPoint_||this.syncController_.getSyncPoint(this.playlist_,this.duration_(),this.currentTimeline_,this.currentTime_());const next={partIndex:null,mediaIndex:null,startOfSegment:null,playlist:this.playlist_,isSyncRequest:Boolean(!this.syncPoint_)};if(next.isSyncRequest)next.mediaIndex=function(currentTimeline,segments,targetTime){segments=segments||[];const timelineSegments=[];let time=0;for(let i=0;i<segments.length;i++){const segment=segments[i];if(currentTimeline===segment.timeline&&(timelineSegments.push(i),time+=segment.duration,time>targetTime))return i}return 0===timelineSegments.length?0:timelineSegments[timelineSegments.length-1]}(this.currentTimeline_,segments,bufferedEnd);else if(null!==this.mediaIndex){const segment=segments[this.mediaIndex],partIndex="number"==typeof this.partIndex?this.partIndex:-1;next.startOfSegment=segment.end?segment.end:bufferedEnd,segment.parts&&segment.parts[partIndex+1]?(next.mediaIndex=this.mediaIndex,next.partIndex=partIndex+1):next.mediaIndex=this.mediaIndex+1}else{const{segmentIndex:segmentIndex,startTime:startTime,partIndex:partIndex}=Playlist.getMediaInfoForTime({exactManifestTimings:this.exactManifestTimings,playlist:this.playlist_,currentTime:this.fetchAtBuffer_?bufferedEnd:this.currentTime_(),startingPartIndex:this.syncPoint_.partIndex,startingSegmentIndex:this.syncPoint_.segmentIndex,startTime:this.syncPoint_.time});next.getMediaInfoForTime=this.fetchAtBuffer_?"bufferedEnd ".concat(bufferedEnd):"currentTime ".concat(this.currentTime_()),next.mediaIndex=segmentIndex,next.startOfSegment=startTime,next.partIndex=partIndex}const nextSegment=segments[next.mediaIndex];let nextPart=nextSegment&&"number"==typeof next.partIndex&&nextSegment.parts&&nextSegment.parts[next.partIndex];if(!nextSegment||"number"==typeof next.partIndex&&!nextPart)return null;if("number"!=typeof next.partIndex&&nextSegment.parts&&(next.partIndex=0,nextPart=nextSegment.parts[0]),!bufferedTime&&nextPart&&!nextPart.independent)if(0===next.partIndex){const lastSegment=segments[next.mediaIndex-1],lastSegmentLastPart=lastSegment.parts&&lastSegment.parts.length&&lastSegment.parts[lastSegment.parts.length-1];lastSegmentLastPart&&lastSegmentLastPart.independent&&(next.mediaIndex-=1,next.partIndex=lastSegment.parts.length-1,next.independent="previous segment")}else nextSegment.parts[next.partIndex-1].independent&&(next.partIndex-=1,next.independent="previous part");const ended=this.mediaSource_&&"ended"===this.mediaSource_.readyState;return next.mediaIndex>=segments.length-1&&ended&&!this.seeking_()?null:this.generateSegmentInfo_(next)}generateSegmentInfo_(options){const{independent:independent,playlist:playlist,mediaIndex:mediaIndex,startOfSegment:startOfSegment,isSyncRequest:isSyncRequest,partIndex:partIndex,forceTimestampOffset:forceTimestampOffset,getMediaInfoForTime:getMediaInfoForTime}=options,segment=playlist.segments[mediaIndex],part="number"==typeof partIndex&&segment.parts[partIndex],segmentInfo={requestId:"segment-loader-"+Math.random(),uri:part&&part.resolvedUri||segment.resolvedUri,mediaIndex:mediaIndex,partIndex:part?partIndex:null,isSyncRequest:isSyncRequest,startOfSegment:startOfSegment,playlist:playlist,bytes:null,encryptedBytes:null,timestampOffset:null,timeline:segment.timeline,duration:part&&part.duration||segment.duration,segment:segment,part:part,byteLength:0,transmuxer:this.transmuxer_,getMediaInfoForTime:getMediaInfoForTime,independent:independent},overrideCheck=void 0!==forceTimestampOffset?forceTimestampOffset:this.isPendingTimestampOffset_;segmentInfo.timestampOffset=this.timestampOffsetForSegment_({segmentTimeline:segment.timeline,currentTimeline:this.currentTimeline_,startOfSegment:startOfSegment,buffered:this.buffered_(),overrideCheck:overrideCheck});const audioBufferedEnd=lastBufferedEnd(this.sourceUpdater_.audioBuffered());return"number"==typeof audioBufferedEnd&&(segmentInfo.audioAppendStart=audioBufferedEnd-this.sourceUpdater_.audioTimestampOffset()),this.sourceUpdater_.videoBuffered().length&&(segmentInfo.gopsToAlignWith=((buffer,currentTime,mapping)=>{if(null==currentTime||!buffer.length)return[];const currentTimePts=Math.ceil((currentTime-mapping+3)*clock_1);let i;for(i=0;i<buffer.length&&!(buffer[i].pts>currentTimePts);i++);return buffer.slice(i)})(this.gopBuffer_,this.currentTime_()-this.sourceUpdater_.videoTimestampOffset(),this.timeMapping_)),segmentInfo}timestampOffsetForSegment_(options){return(_ref62=>{let{segmentTimeline:segmentTimeline,currentTimeline:currentTimeline,startOfSegment:startOfSegment,buffered:buffered,overrideCheck:overrideCheck}=_ref62;return overrideCheck||segmentTimeline!==currentTimeline?segmentTimeline<currentTimeline?startOfSegment:buffered.length?buffered.end(buffered.length-1):startOfSegment:null})(options)}earlyAbortWhenNeeded_(stats){if(this.vhs_.tech_.paused()||!this.xhrOptions_.timeout||!this.playlist_.attributes.BANDWIDTH)return;if(Date.now()-(stats.firstBytesReceivedAt||Date.now())<1e3)return;const currentTime=this.currentTime_(),measuredBandwidth=stats.bandwidth,segmentDuration=this.pendingSegment_.duration,requestTimeRemaining=Playlist.estimateSegmentRequestTime(segmentDuration,measuredBandwidth,this.playlist_,stats.bytesReceived),timeUntilRebuffer$1=function(buffered,currentTime){let playbackRate=arguments.length>2&&void 0!==arguments[2]?arguments[2]:1;return((buffered.length?buffered.end(buffered.length-1):0)-currentTime)/playbackRate}(this.buffered_(),currentTime,this.vhs_.tech_.playbackRate())-1;if(requestTimeRemaining<=timeUntilRebuffer$1)return;const switchCandidate=function(settings){const{main:main,currentTime:currentTime,bandwidth:bandwidth,duration:duration,segmentDuration:segmentDuration,timeUntilRebuffer:timeUntilRebuffer,currentTimeline:currentTimeline,syncController:syncController}=settings,compatiblePlaylists=main.playlists.filter((playlist=>!Playlist.isIncompatible(playlist)));let enabledPlaylists=compatiblePlaylists.filter(Playlist.isEnabled);enabledPlaylists.length||(enabledPlaylists=compatiblePlaylists.filter((playlist=>!Playlist.isDisabled(playlist))));const rebufferingEstimates=enabledPlaylists.filter(Playlist.hasAttribute.bind(null,"BANDWIDTH")).map((playlist=>{const numRequests=syncController.getSyncPoint(playlist,duration,currentTimeline,currentTime)?1:2;return{playlist:playlist,rebufferingImpact:Playlist.estimateSegmentRequestTime(segmentDuration,bandwidth,playlist)*numRequests-timeUntilRebuffer}})),noRebufferingPlaylists=rebufferingEstimates.filter((estimate=>estimate.rebufferingImpact<=0));return stableSort(noRebufferingPlaylists,((a,b)=>comparePlaylistBandwidth(b.playlist,a.playlist))),noRebufferingPlaylists.length?noRebufferingPlaylists[0]:(stableSort(rebufferingEstimates,((a,b)=>a.rebufferingImpact-b.rebufferingImpact)),rebufferingEstimates[0]||null)}({main:this.vhs_.playlists.main,currentTime:currentTime,bandwidth:measuredBandwidth,duration:this.duration_(),segmentDuration:segmentDuration,timeUntilRebuffer:timeUntilRebuffer$1,currentTimeline:this.currentTimeline_,syncController:this.syncController_});if(!switchCandidate)return;const timeSavedBySwitching=requestTimeRemaining-timeUntilRebuffer$1-switchCandidate.rebufferingImpact;let minimumTimeSaving=.5;timeUntilRebuffer$1<=.03333333333333333&&(minimumTimeSaving=1),!switchCandidate.playlist||switchCandidate.playlist.uri===this.playlist_.uri||timeSavedBySwitching<minimumTimeSaving||(this.bandwidth=switchCandidate.playlist.attributes.BANDWIDTH*Config.BANDWIDTH_VARIANCE+1,this.trigger("earlyabort"))}handleAbort_(segmentInfo){this.logger_("Aborting ".concat(segmentInfoString(segmentInfo))),this.mediaRequestsAborted+=1}handleProgress_(event,simpleSegment){this.earlyAbortWhenNeeded_(simpleSegment.stats),this.checkForAbort_(simpleSegment.requestId)||this.trigger("progress")}handleTrackInfo_(simpleSegment,trackInfo){this.earlyAbortWhenNeeded_(simpleSegment.stats),this.checkForAbort_(simpleSegment.requestId)||this.checkForIllegalMediaSwitch(trackInfo)||(trackInfo=trackInfo||{},function(a,b){if(!a&&!b||!a&&b||a&&!b)return!1;if(a===b)return!0;const akeys=Object.keys(a).sort(),bkeys=Object.keys(b).sort();if(akeys.length!==bkeys.length)return!1;for(let i=0;i<akeys.length;i++){const key=akeys[i];if(key!==bkeys[i])return!1;if(a[key]!==b[key])return!1}return!0}(this.currentMediaInfo_,trackInfo)||(this.appendInitSegment_={audio:!0,video:!0},this.startingMediaInfo_=trackInfo,this.currentMediaInfo_=trackInfo,this.logger_("trackinfo update",trackInfo),this.trigger("trackinfo")),this.checkForAbort_(simpleSegment.requestId)||(this.pendingSegment_.trackInfo=trackInfo,this.hasEnoughInfoToAppend_()&&this.processCallQueue_()))}handleTimingInfo_(simpleSegment,mediaType,timeType,time){if(this.earlyAbortWhenNeeded_(simpleSegment.stats),this.checkForAbort_(simpleSegment.requestId))return;const segmentInfo=this.pendingSegment_,timingInfoProperty=timingInfoPropertyForMedia(mediaType);segmentInfo[timingInfoProperty]=segmentInfo[timingInfoProperty]||{},segmentInfo[timingInfoProperty][timeType]=time,this.logger_("timinginfo: ".concat(mediaType," - ").concat(timeType," - ").concat(time)),this.hasEnoughInfoToAppend_()&&this.processCallQueue_()}handleCaptions_(simpleSegment,captionData){if(this.earlyAbortWhenNeeded_(simpleSegment.stats),this.checkForAbort_(simpleSegment.requestId))return;if(0===captionData.length)return void this.logger_("SegmentLoader received no captions from a caption event");if(!this.pendingSegment_.hasAppendedData_)return void this.metadataQueue_.caption.push(this.handleCaptions_.bind(this,simpleSegment,captionData));const timestampOffset=null===this.sourceUpdater_.videoTimestampOffset()?this.sourceUpdater_.audioTimestampOffset():this.sourceUpdater_.videoTimestampOffset(),captionTracks={};captionData.forEach((caption=>{captionTracks[caption.stream]=captionTracks[caption.stream]||{startTime:1/0,captions:[],endTime:0};const captionTrack=captionTracks[caption.stream];captionTrack.startTime=Math.min(captionTrack.startTime,caption.startTime+timestampOffset),captionTrack.endTime=Math.max(captionTrack.endTime,caption.endTime+timestampOffset),captionTrack.captions.push(caption)})),Object.keys(captionTracks).forEach((trackName=>{const{startTime:startTime,endTime:endTime,captions:captions}=captionTracks[trackName],inbandTextTracks=this.inbandTextTracks_;this.logger_("adding cues from ".concat(startTime," -> ").concat(endTime," for ").concat(trackName)),function(inbandTextTracks,tech,captionStream){if(!inbandTextTracks[captionStream]){tech.trigger({type:"usage",name:"vhs-608"});let instreamId=captionStream;/^cc708_/.test(captionStream)&&(instreamId="SERVICE"+captionStream.split("_")[1]);const track=tech.textTracks().getTrackById(instreamId);if(track)inbandTextTracks[captionStream]=track;else{let label=captionStream,language=captionStream,def=!1;const captionService=(tech.options_.vhs&&tech.options_.vhs.captionServices||{})[instreamId];captionService&&(label=captionService.label,language=captionService.language,def=captionService.default),inbandTextTracks[captionStream]=tech.addRemoteTextTrack({kind:"captions",id:instreamId,default:def,label:label,language:language},!1).track}}}(inbandTextTracks,this.vhs_.tech_,trackName),removeCuesFromTrack(startTime,endTime,inbandTextTracks[trackName]),function(_ref60){let{inbandTextTracks:inbandTextTracks,captionArray:captionArray,timestampOffset:timestampOffset}=_ref60;if(!captionArray)return;const Cue=window.WebKitDataCue||window.VTTCue;captionArray.forEach((caption=>{const track=caption.stream;inbandTextTracks[track].addCue(new Cue(caption.startTime+timestampOffset,caption.endTime+timestampOffset,caption.text))}))}({captionArray:captions,inbandTextTracks:inbandTextTracks,timestampOffset:timestampOffset})})),this.transmuxer_&&this.transmuxer_.postMessage({action:"clearParsedMp4Captions"})}handleId3_(simpleSegment,id3Frames,dispatchType){if(this.earlyAbortWhenNeeded_(simpleSegment.stats),this.checkForAbort_(simpleSegment.requestId))return;if(!this.pendingSegment_.hasAppendedData_)return void this.metadataQueue_.id3.push(this.handleId3_.bind(this,simpleSegment,id3Frames,dispatchType));const timestampOffset=null===this.sourceUpdater_.videoTimestampOffset()?this.sourceUpdater_.audioTimestampOffset():this.sourceUpdater_.videoTimestampOffset();((inbandTextTracks,dispatchType,tech)=>{inbandTextTracks.metadataTrack_||(inbandTextTracks.metadataTrack_=tech.addRemoteTextTrack({kind:"metadata",label:"Timed Metadata"},!1).track,inbandTextTracks.metadataTrack_.inBandMetadataTrackDispatchType=dispatchType)})(this.inbandTextTracks_,dispatchType,this.vhs_.tech_),addMetadata({inbandTextTracks:this.inbandTextTracks_,metadataArray:id3Frames,timestampOffset:timestampOffset,videoDuration:this.duration_()})}processMetadataQueue_(){this.metadataQueue_.id3.forEach((fn=>fn())),this.metadataQueue_.caption.forEach((fn=>fn())),this.metadataQueue_.id3=[],this.metadataQueue_.caption=[]}processCallQueue_(){const callQueue=this.callQueue_;this.callQueue_=[],callQueue.forEach((fun=>fun()))}processLoadQueue_(){const loadQueue=this.loadQueue_;this.loadQueue_=[],loadQueue.forEach((fun=>fun()))}hasEnoughInfoToLoad_(){if("audio"!==this.loaderType_)return!0;const segmentInfo=this.pendingSegment_;return!!segmentInfo&&(!this.getCurrentMediaInfo_()||!shouldWaitForTimelineChange({timelineChangeController:this.timelineChangeController_,currentTimeline:this.currentTimeline_,segmentTimeline:segmentInfo.timeline,loaderType:this.loaderType_,audioDisabled:this.audioDisabled_}))}getCurrentMediaInfo_(){let segmentInfo=arguments.length>0&&void 0!==arguments[0]?arguments[0]:this.pendingSegment_;return segmentInfo&&segmentInfo.trackInfo||this.currentMediaInfo_}getMediaInfo_(){let segmentInfo=arguments.length>0&&void 0!==arguments[0]?arguments[0]:this.pendingSegment_;return this.getCurrentMediaInfo_(segmentInfo)||this.startingMediaInfo_}getPendingSegmentPlaylist(){return this.pendingSegment_?this.pendingSegment_.playlist:null}hasEnoughInfoToAppend_(){if(!this.sourceUpdater_.ready())return!1;if(this.waitingOnRemove_||this.quotaExceededErrorRetryTimeout_)return!1;const segmentInfo=this.pendingSegment_,trackInfo=this.getCurrentMediaInfo_();if(!segmentInfo||!trackInfo)return!1;const{hasAudio:hasAudio,hasVideo:hasVideo,isMuxed:isMuxed}=trackInfo;return!(hasVideo&&!segmentInfo.videoTimingInfo)&&(!(hasAudio&&!this.audioDisabled_&&!isMuxed&&!segmentInfo.audioTimingInfo)&&!shouldWaitForTimelineChange({timelineChangeController:this.timelineChangeController_,currentTimeline:this.currentTimeline_,segmentTimeline:segmentInfo.timeline,loaderType:this.loaderType_,audioDisabled:this.audioDisabled_}))}handleData_(simpleSegment,result){if(this.earlyAbortWhenNeeded_(simpleSegment.stats),this.checkForAbort_(simpleSegment.requestId))return;if(this.callQueue_.length||!this.hasEnoughInfoToAppend_())return void this.callQueue_.push(this.handleData_.bind(this,simpleSegment,result));const segmentInfo=this.pendingSegment_;if(this.setTimeMapping_(segmentInfo.timeline),this.updateMediaSecondsLoaded_(segmentInfo.part||segmentInfo.segment),"closed"!==this.mediaSource_.readyState){if(simpleSegment.map&&(simpleSegment.map=this.initSegmentForMap(simpleSegment.map,!0),segmentInfo.segment.map=simpleSegment.map),simpleSegment.key&&this.segmentKey(simpleSegment.key,!0),segmentInfo.isFmp4=simpleSegment.isFmp4,segmentInfo.timingInfo=segmentInfo.timingInfo||{},segmentInfo.isFmp4)this.trigger("fmp4"),segmentInfo.timingInfo.start=segmentInfo[timingInfoPropertyForMedia(result.type)].start;else{const trackInfo=this.getCurrentMediaInfo_(),useVideoTimingInfo="main"===this.loaderType_&&trackInfo&&trackInfo.hasVideo;let firstVideoFrameTimeForData;useVideoTimingInfo&&(firstVideoFrameTimeForData=segmentInfo.videoTimingInfo.start),segmentInfo.timingInfo.start=this.trueSegmentStart_({currentStart:segmentInfo.timingInfo.start,playlist:segmentInfo.playlist,mediaIndex:segmentInfo.mediaIndex,currentVideoTimestampOffset:this.sourceUpdater_.videoTimestampOffset(),useVideoTimingInfo:useVideoTimingInfo,firstVideoFrameTimeForData:firstVideoFrameTimeForData,videoTimingInfo:segmentInfo.videoTimingInfo,audioTimingInfo:segmentInfo.audioTimingInfo})}if(this.updateAppendInitSegmentStatus(segmentInfo,result.type),this.updateSourceBufferTimestampOffset_(segmentInfo),segmentInfo.isSyncRequest){this.updateTimingInfoEnd_(segmentInfo),this.syncController_.saveSegmentTimingInfo({segmentInfo:segmentInfo,shouldSaveTimelineMapping:"main"===this.loaderType_});const next=this.chooseNextRequest_();if(next.mediaIndex!==segmentInfo.mediaIndex||next.partIndex!==segmentInfo.partIndex)return void this.logger_("sync segment was incorrect, not appending");this.logger_("sync segment was correct, appending")}segmentInfo.hasAppendedData_=!0,this.processMetadataQueue_(),this.appendData_(segmentInfo,result)}}updateAppendInitSegmentStatus(segmentInfo,type){"main"!==this.loaderType_||"number"!=typeof segmentInfo.timestampOffset||segmentInfo.changedTimestampOffset||(this.appendInitSegment_={audio:!0,video:!0}),this.playlistOfLastInitSegment_[type]!==segmentInfo.playlist&&(this.appendInitSegment_[type]=!0)}getInitSegmentAndUpdateState_(_ref65){let{type:type,initSegment:initSegment,map:map,playlist:playlist}=_ref65;if(map){const id=initSegmentId(map);if(this.activeInitSegmentId_===id)return null;initSegment=this.initSegmentForMap(map,!0).bytes,this.activeInitSegmentId_=id}return initSegment&&this.appendInitSegment_[type]?(this.playlistOfLastInitSegment_[type]=playlist,this.appendInitSegment_[type]=!1,this.activeInitSegmentId_=null,initSegment):null}handleQuotaExceededError_(_ref66,error){let{segmentInfo:segmentInfo,type:type,bytes:bytes}=_ref66;const audioBuffered=this.sourceUpdater_.audioBuffered(),videoBuffered=this.sourceUpdater_.videoBuffered();audioBuffered.length>1&&this.logger_("On QUOTA_EXCEEDED_ERR, found gaps in the audio buffer: "+timeRangesToArray(audioBuffered).join(", ")),videoBuffered.length>1&&this.logger_("On QUOTA_EXCEEDED_ERR, found gaps in the video buffer: "+timeRangesToArray(videoBuffered).join(", "));const audioBufferStart=audioBuffered.length?audioBuffered.start(0):0,audioBufferEnd=audioBuffered.length?audioBuffered.end(audioBuffered.length-1):0,videoBufferStart=videoBuffered.length?videoBuffered.start(0):0,videoBufferEnd=videoBuffered.length?videoBuffered.end(videoBuffered.length-1):0;if(audioBufferEnd-audioBufferStart<=1&&videoBufferEnd-videoBufferStart<=1)return this.logger_("On QUOTA_EXCEEDED_ERR, single segment too large to append to buffer, triggering an error. "+"Appended byte length: ".concat(bytes.byteLength,", ")+"audio buffer: ".concat(timeRangesToArray(audioBuffered).join(", "),", ")+"video buffer: ".concat(timeRangesToArray(videoBuffered).join(", "),", ")),this.error({message:"Quota exceeded error with append of a single segment of content",excludeUntil:1/0}),void this.trigger("error");this.waitingOnRemove_=!0,this.callQueue_.push(this.appendToSourceBuffer_.bind(this,{segmentInfo:segmentInfo,type:type,bytes:bytes}));const timeToRemoveUntil=this.currentTime_()-1;this.logger_("On QUOTA_EXCEEDED_ERR, removing audio/video from 0 to ".concat(timeToRemoveUntil)),this.remove(0,timeToRemoveUntil,(()=>{this.logger_("On QUOTA_EXCEEDED_ERR, retrying append in ".concat(1,"s")),this.waitingOnRemove_=!1,this.quotaExceededErrorRetryTimeout_=window.setTimeout((()=>{this.logger_("On QUOTA_EXCEEDED_ERR, re-processing call queue"),this.quotaExceededErrorRetryTimeout_=null,this.processCallQueue_()}),1e3)}),!0)}handleAppendError_(_ref67,error){let{segmentInfo:segmentInfo,type:type,bytes:bytes}=_ref67;error&&(22!==error.code?(this.logger_("Received non QUOTA_EXCEEDED_ERR on append",error),this.error("".concat(type," append of ").concat(bytes.length,"b failed for segment ")+"#".concat(segmentInfo.mediaIndex," in playlist ").concat(segmentInfo.playlist.id)),this.trigger("appenderror")):this.handleQuotaExceededError_({segmentInfo:segmentInfo,type:type,bytes:bytes}))}appendToSourceBuffer_(_ref68){let{segmentInfo:segmentInfo,type:type,initSegment:initSegment,data:data,bytes:bytes}=_ref68;if(!bytes){const segments=[data];let byteLength=data.byteLength;initSegment&&(segments.unshift(initSegment),byteLength+=initSegment.byteLength),bytes=(segmentObj=>{let tempBuffer,offset=0;return segmentObj.bytes&&(tempBuffer=new Uint8Array(segmentObj.bytes),segmentObj.segments.forEach((segment=>{tempBuffer.set(segment,offset),offset+=segment.byteLength}))),tempBuffer})({bytes:byteLength,segments:segments})}this.sourceUpdater_.appendBuffer({segmentInfo:segmentInfo,type:type,bytes:bytes},this.handleAppendError_.bind(this,{segmentInfo:segmentInfo,type:type,bytes:bytes}))}handleSegmentTimingInfo_(type,requestId,segmentTimingInfo){if(!this.pendingSegment_||requestId!==this.pendingSegment_.requestId)return;const segment=this.pendingSegment_.segment,timingInfoProperty="".concat(type,"TimingInfo");segment[timingInfoProperty]||(segment[timingInfoProperty]={}),segment[timingInfoProperty].transmuxerPrependedSeconds=segmentTimingInfo.prependedContentDuration||0,segment[timingInfoProperty].transmuxedPresentationStart=segmentTimingInfo.start.presentation,segment[timingInfoProperty].transmuxedDecodeStart=segmentTimingInfo.start.decode,segment[timingInfoProperty].transmuxedPresentationEnd=segmentTimingInfo.end.presentation,segment[timingInfoProperty].transmuxedDecodeEnd=segmentTimingInfo.end.decode,segment[timingInfoProperty].baseMediaDecodeTime=segmentTimingInfo.baseMediaDecodeTime}appendData_(segmentInfo,result){const{type:type,data:data}=result;if(!data||!data.byteLength)return;if("audio"===type&&this.audioDisabled_)return;const initSegment=this.getInitSegmentAndUpdateState_({type:type,initSegment:result.initSegment,playlist:segmentInfo.playlist,map:segmentInfo.isFmp4?segmentInfo.segment.map:null});this.appendToSourceBuffer_({segmentInfo:segmentInfo,type:type,initSegment:initSegment,data:data})}loadSegment_(segmentInfo){this.state="WAITING",this.pendingSegment_=segmentInfo,this.trimBackBuffer_(segmentInfo),"number"==typeof segmentInfo.timestampOffset&&this.transmuxer_&&this.transmuxer_.postMessage({action:"clearAllMp4Captions"}),this.hasEnoughInfoToLoad_()?this.updateTransmuxerAndRequestSegment_(segmentInfo):this.loadQueue_.push((()=>{const options=_extends$1({},segmentInfo,{forceTimestampOffset:!0});_extends$1(segmentInfo,this.generateSegmentInfo_(options)),this.isPendingTimestampOffset_=!1,this.updateTransmuxerAndRequestSegment_(segmentInfo)}))}updateTransmuxerAndRequestSegment_(segmentInfo){this.shouldUpdateTransmuxerTimestampOffset_(segmentInfo.timestampOffset)&&(this.gopBuffer_.length=0,segmentInfo.gopsToAlignWith=[],this.timeMapping_=0,this.transmuxer_.postMessage({action:"reset"}),this.transmuxer_.postMessage({action:"setTimestampOffset",timestampOffset:segmentInfo.timestampOffset}));const simpleSegment=this.createSimplifiedSegmentObj_(segmentInfo),isEndOfStream=this.isEndOfStream_(segmentInfo.mediaIndex,segmentInfo.playlist,segmentInfo.partIndex),isWalkingForward=null!==this.mediaIndex,isDiscontinuity=segmentInfo.timeline!==this.currentTimeline_&&segmentInfo.timeline>0,isEndOfTimeline=isEndOfStream||isWalkingForward&&isDiscontinuity;this.logger_("Requesting ".concat(segmentInfoString(segmentInfo))),simpleSegment.map&&!simpleSegment.map.bytes&&(this.logger_("going to request init segment."),this.appendInitSegment_={video:!0,audio:!0}),segmentInfo.abortRequests=mediaSegmentRequest({xhr:this.vhs_.xhr,xhrOptions:this.xhrOptions_,decryptionWorker:this.decrypter_,segment:simpleSegment,abortFn:this.handleAbort_.bind(this,segmentInfo),progressFn:this.handleProgress_.bind(this),trackInfoFn:this.handleTrackInfo_.bind(this),timingInfoFn:this.handleTimingInfo_.bind(this),videoSegmentTimingInfoFn:this.handleSegmentTimingInfo_.bind(this,"video",segmentInfo.requestId),audioSegmentTimingInfoFn:this.handleSegmentTimingInfo_.bind(this,"audio",segmentInfo.requestId),captionsFn:this.handleCaptions_.bind(this),isEndOfTimeline:isEndOfTimeline,endedTimelineFn:()=>{this.logger_("received endedtimeline callback")},id3Fn:this.handleId3_.bind(this),dataFn:this.handleData_.bind(this),doneFn:this.segmentRequestFinished_.bind(this),onTransmuxerLog:_ref69=>{let{message:message,level:level,stream:stream}=_ref69;this.logger_("".concat(segmentInfoString(segmentInfo)," logged from transmuxer stream ").concat(stream," as a ").concat(level,": ").concat(message))}})}trimBackBuffer_(segmentInfo){const removeToTime=((seekable,currentTime,targetDuration)=>{let trimTime=currentTime-Config.BACK_BUFFER_LENGTH;seekable.length&&(trimTime=Math.max(trimTime,seekable.start(0)));const maxTrimTime=currentTime-targetDuration;return Math.min(maxTrimTime,trimTime)})(this.seekable_(),this.currentTime_(),this.playlist_.targetDuration||10);removeToTime>0&&this.remove(0,removeToTime)}createSimplifiedSegmentObj_(segmentInfo){const segment=segmentInfo.segment,part=segmentInfo.part,simpleSegment={resolvedUri:part?part.resolvedUri:segment.resolvedUri,byterange:part?part.byterange:segment.byterange,requestId:segmentInfo.requestId,transmuxer:segmentInfo.transmuxer,audioAppendStart:segmentInfo.audioAppendStart,gopsToAlignWith:segmentInfo.gopsToAlignWith,part:segmentInfo.part},previousSegment=segmentInfo.playlist.segments[segmentInfo.mediaIndex-1];if(previousSegment&&previousSegment.timeline===segment.timeline&&(previousSegment.videoTimingInfo?simpleSegment.baseStartTime=previousSegment.videoTimingInfo.transmuxedDecodeEnd:previousSegment.audioTimingInfo&&(simpleSegment.baseStartTime=previousSegment.audioTimingInfo.transmuxedDecodeEnd)),segment.key){const iv=segment.key.iv||new Uint32Array([0,0,0,segmentInfo.mediaIndex+segmentInfo.playlist.mediaSequence]);simpleSegment.key=this.segmentKey(segment.key),simpleSegment.key.iv=iv}return segment.map&&(simpleSegment.map=this.initSegmentForMap(segment.map)),simpleSegment}saveTransferStats_(stats){this.mediaRequests+=1,stats&&(this.mediaBytesTransferred+=stats.bytesReceived,this.mediaTransferDuration+=stats.roundTripTime)}saveBandwidthRelatedStats_(duration,stats){this.pendingSegment_.byteLength=stats.bytesReceived,duration<.016666666666666666?this.logger_("Ignoring segment's bandwidth because its duration of ".concat(duration)+" is less than the min to record ".concat(.016666666666666666)):(this.bandwidth=stats.bandwidth,this.roundTrip=stats.roundTripTime)}handleTimeout_(){this.mediaRequestsTimedout+=1,this.bandwidth=1,this.roundTrip=NaN,this.trigger("bandwidthupdate"),this.trigger("timeout")}segmentRequestFinished_(error,simpleSegment,result){if(this.callQueue_.length)return void this.callQueue_.push(this.segmentRequestFinished_.bind(this,error,simpleSegment,result));if(this.saveTransferStats_(simpleSegment.stats),!this.pendingSegment_)return;if(simpleSegment.requestId!==this.pendingSegment_.requestId)return;if(error){if(this.pendingSegment_=null,this.state="READY",error.code===REQUEST_ERRORS_ABORTED)return;return this.pause(),error.code===REQUEST_ERRORS_TIMEOUT?void this.handleTimeout_():(this.mediaRequestsErrored+=1,this.error(error),void this.trigger("error"))}const segmentInfo=this.pendingSegment_;this.saveBandwidthRelatedStats_(segmentInfo.duration,simpleSegment.stats),segmentInfo.endOfAllRequests=simpleSegment.endOfAllRequests,result.gopInfo&&(this.gopBuffer_=((buffer,gops,replace)=>{if(!gops.length)return buffer;if(replace)return gops.slice();const start=gops[0].pts;let i=0;for(;i<buffer.length&&!(buffer[i].pts>=start);i++);return buffer.slice(0,i).concat(gops)})(this.gopBuffer_,result.gopInfo,this.safeAppend_)),this.state="APPENDING",this.trigger("appending"),this.waitForAppendsToComplete_(segmentInfo)}setTimeMapping_(timeline){const timelineMapping=this.syncController_.mappingForTimeline(timeline);null!==timelineMapping&&(this.timeMapping_=timelineMapping)}updateMediaSecondsLoaded_(segment){"number"==typeof segment.start&&"number"==typeof segment.end?this.mediaSecondsLoaded+=segment.end-segment.start:this.mediaSecondsLoaded+=segment.duration}shouldUpdateTransmuxerTimestampOffset_(timestampOffset){return null!==timestampOffset&&("main"===this.loaderType_&&timestampOffset!==this.sourceUpdater_.videoTimestampOffset()||!this.audioDisabled_&&timestampOffset!==this.sourceUpdater_.audioTimestampOffset())}trueSegmentStart_(_ref70){let{currentStart:currentStart,playlist:playlist,mediaIndex:mediaIndex,firstVideoFrameTimeForData:firstVideoFrameTimeForData,currentVideoTimestampOffset:currentVideoTimestampOffset,useVideoTimingInfo:useVideoTimingInfo,videoTimingInfo:videoTimingInfo,audioTimingInfo:audioTimingInfo}=_ref70;if(void 0!==currentStart)return currentStart;if(!useVideoTimingInfo)return audioTimingInfo.start;const previousSegment=playlist.segments[mediaIndex-1];return 0!==mediaIndex&&previousSegment&&void 0!==previousSegment.start&&previousSegment.end===firstVideoFrameTimeForData+currentVideoTimestampOffset?videoTimingInfo.start:firstVideoFrameTimeForData}waitForAppendsToComplete_(segmentInfo){const trackInfo=this.getCurrentMediaInfo_(segmentInfo);if(!trackInfo)return this.error({message:"No starting media returned, likely due to an unsupported media format.",playlistExclusionDuration:1/0}),void this.trigger("error");const{hasAudio:hasAudio,hasVideo:hasVideo,isMuxed:isMuxed}=trackInfo,waitForVideo="main"===this.loaderType_&&hasVideo,waitForAudio=!this.audioDisabled_&&hasAudio&&!isMuxed;if(segmentInfo.waitingOnAppends=0,!segmentInfo.hasAppendedData_)return segmentInfo.timingInfo||"number"!=typeof segmentInfo.timestampOffset||(this.isPendingTimestampOffset_=!0),segmentInfo.timingInfo={start:0},segmentInfo.waitingOnAppends++,this.isPendingTimestampOffset_||(this.updateSourceBufferTimestampOffset_(segmentInfo),this.processMetadataQueue_()),void this.checkAppendsDone_(segmentInfo);waitForVideo&&segmentInfo.waitingOnAppends++,waitForAudio&&segmentInfo.waitingOnAppends++,waitForVideo&&this.sourceUpdater_.videoQueueCallback(this.checkAppendsDone_.bind(this,segmentInfo)),waitForAudio&&this.sourceUpdater_.audioQueueCallback(this.checkAppendsDone_.bind(this,segmentInfo))}checkAppendsDone_(segmentInfo){this.checkForAbort_(segmentInfo.requestId)||(segmentInfo.waitingOnAppends--,0===segmentInfo.waitingOnAppends&&this.handleAppendsDone_())}checkForIllegalMediaSwitch(trackInfo){const illegalMediaSwitchError=((loaderType,startingMedia,trackInfo)=>"main"===loaderType&&startingMedia&&trackInfo?trackInfo.hasAudio||trackInfo.hasVideo?startingMedia.hasVideo&&!trackInfo.hasVideo?"Only audio found in segment when we expected video. We can't switch to audio only from a stream that had video. To get rid of this message, please add codec information to the manifest.":!startingMedia.hasVideo&&trackInfo.hasVideo?"Video found in segment when we expected only audio. We can't switch to a stream with video from an audio only stream. To get rid of this message, please add codec information to the manifest.":null:"Neither audio nor video found in segment.":null)(this.loaderType_,this.getCurrentMediaInfo_(),trackInfo);return!!illegalMediaSwitchError&&(this.error({message:illegalMediaSwitchError,playlistExclusionDuration:1/0}),this.trigger("error"),!0)}updateSourceBufferTimestampOffset_(segmentInfo){if(null===segmentInfo.timestampOffset||"number"!=typeof segmentInfo.timingInfo.start||segmentInfo.changedTimestampOffset||"main"!==this.loaderType_)return;let didChange=!1;segmentInfo.timestampOffset-=this.getSegmentStartTimeForTimestampOffsetCalculation_({videoTimingInfo:segmentInfo.segment.videoTimingInfo,audioTimingInfo:segmentInfo.segment.audioTimingInfo,timingInfo:segmentInfo.timingInfo}),segmentInfo.changedTimestampOffset=!0,segmentInfo.timestampOffset!==this.sourceUpdater_.videoTimestampOffset()&&(this.sourceUpdater_.videoTimestampOffset(segmentInfo.timestampOffset),didChange=!0),segmentInfo.timestampOffset!==this.sourceUpdater_.audioTimestampOffset()&&(this.sourceUpdater_.audioTimestampOffset(segmentInfo.timestampOffset),didChange=!0),didChange&&this.trigger("timestampoffset")}getSegmentStartTimeForTimestampOffsetCalculation_(_ref71){let{videoTimingInfo:videoTimingInfo,audioTimingInfo:audioTimingInfo,timingInfo:timingInfo}=_ref71;return this.useDtsForTimestampOffset_?videoTimingInfo&&"number"==typeof videoTimingInfo.transmuxedDecodeStart?videoTimingInfo.transmuxedDecodeStart:audioTimingInfo&&"number"==typeof audioTimingInfo.transmuxedDecodeStart?audioTimingInfo.transmuxedDecodeStart:timingInfo.start:timingInfo.start}updateTimingInfoEnd_(segmentInfo){segmentInfo.timingInfo=segmentInfo.timingInfo||{};const trackInfo=this.getMediaInfo_(),prioritizedTimingInfo="main"===this.loaderType_&&trackInfo&&trackInfo.hasVideo&&segmentInfo.videoTimingInfo?segmentInfo.videoTimingInfo:segmentInfo.audioTimingInfo;prioritizedTimingInfo&&(segmentInfo.timingInfo.end="number"==typeof prioritizedTimingInfo.end?prioritizedTimingInfo.end:prioritizedTimingInfo.start+segmentInfo.duration)}handleAppendsDone_(){if(this.pendingSegment_&&this.trigger("appendsdone"),!this.pendingSegment_)return this.state="READY",void(this.paused()||this.monitorBuffer_());const segmentInfo=this.pendingSegment_;this.updateTimingInfoEnd_(segmentInfo),this.shouldSaveSegmentTimingInfo_&&this.syncController_.saveSegmentTimingInfo({segmentInfo:segmentInfo,shouldSaveTimelineMapping:"main"===this.loaderType_});const segmentDurationMessage=getTroublesomeSegmentDurationMessage(segmentInfo,this.sourceType_);if(segmentDurationMessage&&("warn"===segmentDurationMessage.severity?videojs.log.warn(segmentDurationMessage.message):this.logger_(segmentDurationMessage.message)),this.recordThroughput_(segmentInfo),this.pendingSegment_=null,this.state="READY",segmentInfo.isSyncRequest&&(this.trigger("syncinfoupdate"),!segmentInfo.hasAppendedData_))return void this.logger_("Throwing away un-appended sync request ".concat(segmentInfoString(segmentInfo)));this.logger_("Appended ".concat(segmentInfoString(segmentInfo))),this.addSegmentMetadataCue_(segmentInfo),this.fetchAtBuffer_=!0,this.currentTimeline_!==segmentInfo.timeline&&(this.timelineChangeController_.lastTimelineChange({type:this.loaderType_,from:this.currentTimeline_,to:segmentInfo.timeline}),"main"!==this.loaderType_||this.audioDisabled_||this.timelineChangeController_.lastTimelineChange({type:"audio",from:this.currentTimeline_,to:segmentInfo.timeline})),this.currentTimeline_=segmentInfo.timeline,this.trigger("syncinfoupdate");const segment=segmentInfo.segment,part=segmentInfo.part,badSegmentGuess=segment.end&&this.currentTime_()-segment.end>3*segmentInfo.playlist.targetDuration,badPartGuess=part&&part.end&&this.currentTime_()-part.end>3*segmentInfo.playlist.partTargetDuration;if(badSegmentGuess||badPartGuess)return this.logger_("bad ".concat(badSegmentGuess?"segment":"part"," ").concat(segmentInfoString(segmentInfo))),void this.resetEverything();null!==this.mediaIndex&&this.trigger("bandwidthupdate"),this.trigger("progress"),this.mediaIndex=segmentInfo.mediaIndex,this.partIndex=segmentInfo.partIndex,this.isEndOfStream_(segmentInfo.mediaIndex,segmentInfo.playlist,segmentInfo.partIndex)&&this.endOfStream(),this.trigger("appended"),segmentInfo.hasAppendedData_&&this.mediaAppends++,this.paused()||this.monitorBuffer_()}recordThroughput_(segmentInfo){if(segmentInfo.duration<.016666666666666666)return void this.logger_("Ignoring segment's throughput because its duration of ".concat(segmentInfo.duration)+" is less than the min to record ".concat(.016666666666666666));const rate=this.throughput.rate,segmentProcessingTime=Date.now()-segmentInfo.endOfAllRequests+1,segmentProcessingThroughput=Math.floor(segmentInfo.byteLength/segmentProcessingTime*8*1e3);this.throughput.rate+=(segmentProcessingThroughput-rate)/++this.throughput.count}addSegmentMetadataCue_(segmentInfo){if(!this.segmentMetadataTrack_)return;const segment=segmentInfo.segment,start=segment.start,end=segment.end;if(!finite(start)||!finite(end))return;removeCuesFromTrack(start,end,this.segmentMetadataTrack_);const Cue=window.WebKitDataCue||window.VTTCue,value={custom:segment.custom,dateTimeObject:segment.dateTimeObject,dateTimeString:segment.dateTimeString,bandwidth:segmentInfo.playlist.attributes.BANDWIDTH,resolution:segmentInfo.playlist.attributes.RESOLUTION,codecs:segmentInfo.playlist.attributes.CODECS,byteLength:segmentInfo.byteLength,uri:segmentInfo.uri,timeline:segmentInfo.timeline,playlist:segmentInfo.playlist.id,start:start,end:end},cue=new Cue(start,end,JSON.stringify(value));cue.value=value,this.segmentMetadataTrack_.addCue(cue)}}function noop(){}const toTitleCase=function(string){return"string"!=typeof string?string:string.replace(/./,(w=>w.toUpperCase()))},bufferTypes=["video","audio"],updating=(type,sourceUpdater)=>{const sourceBuffer=sourceUpdater["".concat(type,"Buffer")];return sourceBuffer&&sourceBuffer.updating||sourceUpdater.queuePending[type]},shiftQueue=(type,sourceUpdater)=>{if(0===sourceUpdater.queue.length)return;let queueIndex=0,queueEntry=sourceUpdater.queue[queueIndex];if("mediaSource"!==queueEntry.type){if("mediaSource"!==type&&sourceUpdater.ready()&&"closed"!==sourceUpdater.mediaSource.readyState&&!updating(type,sourceUpdater)){if(queueEntry.type!==type){if(queueIndex=((type,queue)=>{for(let i=0;i<queue.length;i++){const queueEntry=queue[i];if("mediaSource"===queueEntry.type)return null;if(queueEntry.type===type)return i}return null})(type,sourceUpdater.queue),null===queueIndex)return;queueEntry=sourceUpdater.queue[queueIndex]}return sourceUpdater.queue.splice(queueIndex,1),sourceUpdater.queuePending[type]=queueEntry,queueEntry.action(type,sourceUpdater),queueEntry.doneFn?void 0:(sourceUpdater.queuePending[type]=null,void shiftQueue(type,sourceUpdater))}}else sourceUpdater.updating()||"closed"===sourceUpdater.mediaSource.readyState||(sourceUpdater.queue.shift(),queueEntry.action(sourceUpdater),queueEntry.doneFn&&queueEntry.doneFn(),shiftQueue("audio",sourceUpdater),shiftQueue("video",sourceUpdater))},cleanupBuffer=(type,sourceUpdater)=>{const buffer=sourceUpdater["".concat(type,"Buffer")],titleType=toTitleCase(type);buffer&&(buffer.removeEventListener("updateend",sourceUpdater["on".concat(titleType,"UpdateEnd_")]),buffer.removeEventListener("error",sourceUpdater["on".concat(titleType,"Error_")]),sourceUpdater.codecs[type]=null,sourceUpdater["".concat(type,"Buffer")]=null)},inSourceBuffers=(mediaSource,sourceBuffer)=>mediaSource&&sourceBuffer&&-1!==Array.prototype.indexOf.call(mediaSource.sourceBuffers,sourceBuffer),actions_appendBuffer=(bytes,segmentInfo,onError)=>(type,sourceUpdater)=>{const sourceBuffer=sourceUpdater["".concat(type,"Buffer")];if(inSourceBuffers(sourceUpdater.mediaSource,sourceBuffer)){sourceUpdater.logger_("Appending segment ".concat(segmentInfo.mediaIndex,"'s ").concat(bytes.length," bytes to ").concat(type,"Buffer"));try{sourceBuffer.appendBuffer(bytes)}catch(e){sourceUpdater.logger_("Error with code ".concat(e.code," ")+(22===e.code?"(QUOTA_EXCEEDED_ERR) ":"")+"when appending segment ".concat(segmentInfo.mediaIndex," to ").concat(type,"Buffer")),sourceUpdater.queuePending[type]=null,onError(e)}}},actions_remove=(start,end)=>(type,sourceUpdater)=>{const sourceBuffer=sourceUpdater["".concat(type,"Buffer")];if(inSourceBuffers(sourceUpdater.mediaSource,sourceBuffer)){sourceUpdater.logger_("Removing ".concat(start," to ").concat(end," from ").concat(type,"Buffer"));try{sourceBuffer.remove(start,end)}catch(e){sourceUpdater.logger_("Remove ".concat(start," to ").concat(end," from ").concat(type,"Buffer failed"))}}},actions_timestampOffset=offset=>(type,sourceUpdater)=>{const sourceBuffer=sourceUpdater["".concat(type,"Buffer")];inSourceBuffers(sourceUpdater.mediaSource,sourceBuffer)&&(sourceUpdater.logger_("Setting ".concat(type,"timestampOffset to ").concat(offset)),sourceBuffer.timestampOffset=offset)},actions_callback=callback=>(type,sourceUpdater)=>{callback()},actions_endOfStream=error=>sourceUpdater=>{if("open"===sourceUpdater.mediaSource.readyState){sourceUpdater.logger_("Calling mediaSource endOfStream(".concat(error||"",")"));try{sourceUpdater.mediaSource.endOfStream(error)}catch(e){videojs.log.warn("Failed to call media source endOfStream",e)}}},actions_duration=duration=>sourceUpdater=>{sourceUpdater.logger_("Setting mediaSource duration to ".concat(duration));try{sourceUpdater.mediaSource.duration=duration}catch(e){videojs.log.warn("Failed to set media source duration",e)}},actions_abort=()=>(type,sourceUpdater)=>{if("open"!==sourceUpdater.mediaSource.readyState)return;const sourceBuffer=sourceUpdater["".concat(type,"Buffer")];if(inSourceBuffers(sourceUpdater.mediaSource,sourceBuffer)){sourceUpdater.logger_("calling abort on ".concat(type,"Buffer"));try{sourceBuffer.abort()}catch(e){videojs.log.warn("Failed to abort on ".concat(type,"Buffer"),e)}}},actions_addSourceBuffer=(type,codec)=>sourceUpdater=>{const titleType=toTitleCase(type),mime=getMimeForCodec(codec);sourceUpdater.logger_("Adding ".concat(type,"Buffer with codec ").concat(codec," to mediaSource"));const sourceBuffer=sourceUpdater.mediaSource.addSourceBuffer(mime);sourceBuffer.addEventListener("updateend",sourceUpdater["on".concat(titleType,"UpdateEnd_")]),sourceBuffer.addEventListener("error",sourceUpdater["on".concat(titleType,"Error_")]),sourceUpdater.codecs[type]=codec,sourceUpdater["".concat(type,"Buffer")]=sourceBuffer},actions_removeSourceBuffer=type=>sourceUpdater=>{const sourceBuffer=sourceUpdater["".concat(type,"Buffer")];if(cleanupBuffer(type,sourceUpdater),inSourceBuffers(sourceUpdater.mediaSource,sourceBuffer)){sourceUpdater.logger_("Removing ".concat(type,"Buffer with codec ").concat(sourceUpdater.codecs[type]," from mediaSource"));try{sourceUpdater.mediaSource.removeSourceBuffer(sourceBuffer)}catch(e){videojs.log.warn("Failed to removeSourceBuffer ".concat(type,"Buffer"),e)}}},actions_changeType=codec=>(type,sourceUpdater)=>{const sourceBuffer=sourceUpdater["".concat(type,"Buffer")],mime=getMimeForCodec(codec);inSourceBuffers(sourceUpdater.mediaSource,sourceBuffer)&&sourceUpdater.codecs[type]!==codec&&(sourceUpdater.logger_("changing ".concat(type,"Buffer codec from ").concat(sourceUpdater.codecs[type]," to ").concat(codec)),sourceBuffer.changeType(mime),sourceUpdater.codecs[type]=codec)},pushQueue=_ref72=>{let{type:type,sourceUpdater:sourceUpdater,action:action,doneFn:doneFn,name:name}=_ref72;sourceUpdater.queue.push({type:type,action:action,doneFn:doneFn,name:name}),shiftQueue(type,sourceUpdater)},onUpdateend=(type,sourceUpdater)=>e=>{if(sourceUpdater.queuePending[type]){const doneFn=sourceUpdater.queuePending[type].doneFn;sourceUpdater.queuePending[type]=null,doneFn&&doneFn(sourceUpdater["".concat(type,"Error_")])}shiftQueue(type,sourceUpdater)};class SourceUpdater extends videojs.EventTarget{constructor(mediaSource){super(),this.mediaSource=mediaSource,this.sourceopenListener_=()=>shiftQueue("mediaSource",this),this.mediaSource.addEventListener("sourceopen",this.sourceopenListener_),this.logger_=logger("SourceUpdater"),this.audioTimestampOffset_=0,this.videoTimestampOffset_=0,this.queue=[],this.queuePending={audio:null,video:null},this.delayedAudioAppendQueue_=[],this.videoAppendQueued_=!1,this.codecs={},this.onVideoUpdateEnd_=onUpdateend("video",this),this.onAudioUpdateEnd_=onUpdateend("audio",this),this.onVideoError_=e=>{this.videoError_=e},this.onAudioError_=e=>{this.audioError_=e},this.createdSourceBuffers_=!1,this.initializedEme_=!1,this.triggeredReady_=!1}initializedEme(){this.initializedEme_=!0,this.triggerReady()}hasCreatedSourceBuffers(){return this.createdSourceBuffers_}hasInitializedAnyEme(){return this.initializedEme_}ready(){return this.hasCreatedSourceBuffers()&&this.hasInitializedAnyEme()}createSourceBuffers(codecs){this.hasCreatedSourceBuffers()||(this.addOrChangeSourceBuffers(codecs),this.createdSourceBuffers_=!0,this.trigger("createdsourcebuffers"),this.triggerReady())}triggerReady(){this.ready()&&!this.triggeredReady_&&(this.triggeredReady_=!0,this.trigger("ready"))}addSourceBuffer(type,codec){pushQueue({type:"mediaSource",sourceUpdater:this,action:actions_addSourceBuffer(type,codec),name:"addSourceBuffer"})}abort(type){pushQueue({type:type,sourceUpdater:this,action:actions_abort(type),name:"abort"})}removeSourceBuffer(type){this.canRemoveSourceBuffer()?pushQueue({type:"mediaSource",sourceUpdater:this,action:actions_removeSourceBuffer(type),name:"removeSourceBuffer"}):videojs.log.error("removeSourceBuffer is not supported!")}canRemoveSourceBuffer(){return!videojs.browser.IE_VERSION&&!videojs.browser.IS_FIREFOX&&window.MediaSource&&window.MediaSource.prototype&&"function"==typeof window.MediaSource.prototype.removeSourceBuffer}static canChangeType(){return window.SourceBuffer&&window.SourceBuffer.prototype&&"function"==typeof window.SourceBuffer.prototype.changeType}canChangeType(){return this.constructor.canChangeType()}changeType(type,codec){this.canChangeType()?pushQueue({type:type,sourceUpdater:this,action:actions_changeType(codec),name:"changeType"}):videojs.log.error("changeType is not supported!")}addOrChangeSourceBuffers(codecs){if(!codecs||"object"!=typeof codecs||0===Object.keys(codecs).length)throw new Error("Cannot addOrChangeSourceBuffers to undefined codecs");Object.keys(codecs).forEach((type=>{const codec=codecs[type];if(!this.hasCreatedSourceBuffers())return this.addSourceBuffer(type,codec);this.canChangeType()&&this.changeType(type,codec)}))}appendBuffer(options,doneFn){const{segmentInfo:segmentInfo,type:type,bytes:bytes}=options;if(this.processedAppend_=!0,"audio"===type&&this.videoBuffer&&!this.videoAppendQueued_)return this.delayedAudioAppendQueue_.push([options,doneFn]),void this.logger_("delayed audio append of ".concat(bytes.length," until video append"));if(pushQueue({type:type,sourceUpdater:this,action:actions_appendBuffer(bytes,segmentInfo||{mediaIndex:-1},doneFn),doneFn:doneFn,name:"appendBuffer"}),"video"===type){if(this.videoAppendQueued_=!0,!this.delayedAudioAppendQueue_.length)return;const queue=this.delayedAudioAppendQueue_.slice();this.logger_("queuing delayed audio ".concat(queue.length," appendBuffers")),this.delayedAudioAppendQueue_.length=0,queue.forEach((que=>{this.appendBuffer.apply(this,que)}))}}audioBuffered(){return inSourceBuffers(this.mediaSource,this.audioBuffer)&&this.audioBuffer.buffered?this.audioBuffer.buffered:createTimeRanges()}videoBuffered(){return inSourceBuffers(this.mediaSource,this.videoBuffer)&&this.videoBuffer.buffered?this.videoBuffer.buffered:createTimeRanges()}buffered(){const video=inSourceBuffers(this.mediaSource,this.videoBuffer)?this.videoBuffer:null,audio=inSourceBuffers(this.mediaSource,this.audioBuffer)?this.audioBuffer:null;return audio&&!video?this.audioBuffered():video&&!audio?this.videoBuffered():function(bufferA,bufferB){let start=null,end=null,arity=0;const extents=[],ranges=[];if(!(bufferA&&bufferA.length&&bufferB&&bufferB.length))return createTimeRanges();let count=bufferA.length;for(;count--;)extents.push({time:bufferA.start(count),type:"start"}),extents.push({time:bufferA.end(count),type:"end"});for(count=bufferB.length;count--;)extents.push({time:bufferB.start(count),type:"start"}),extents.push({time:bufferB.end(count),type:"end"});for(extents.sort((function(a,b){return a.time-b.time})),count=0;count<extents.length;count++)"start"===extents[count].type?(arity++,2===arity&&(start=extents[count].time)):"end"===extents[count].type&&(arity--,1===arity&&(end=extents[count].time)),null!==start&&null!==end&&(ranges.push([start,end]),start=null,end=null);return createTimeRanges(ranges)}(this.audioBuffered(),this.videoBuffered())}setDuration(duration){let doneFn=arguments.length>1&&void 0!==arguments[1]?arguments[1]:noop;pushQueue({type:"mediaSource",sourceUpdater:this,action:actions_duration(duration),name:"duration",doneFn:doneFn})}endOfStream(){let error=arguments.length>0&&void 0!==arguments[0]?arguments[0]:null,doneFn=arguments.length>1&&void 0!==arguments[1]?arguments[1]:noop;"string"!=typeof error&&(error=void 0),pushQueue({type:"mediaSource",sourceUpdater:this,action:actions_endOfStream(error),name:"endOfStream",doneFn:doneFn})}removeAudio(start,end){let done=arguments.length>2&&void 0!==arguments[2]?arguments[2]:noop;this.audioBuffered().length&&0!==this.audioBuffered().end(0)?pushQueue({type:"audio",sourceUpdater:this,action:actions_remove(start,end),doneFn:done,name:"remove"}):done()}removeVideo(start,end){let done=arguments.length>2&&void 0!==arguments[2]?arguments[2]:noop;this.videoBuffered().length&&0!==this.videoBuffered().end(0)?pushQueue({type:"video",sourceUpdater:this,action:actions_remove(start,end),doneFn:done,name:"remove"}):done()}updating(){return!(!updating("audio",this)&&!updating("video",this))}audioTimestampOffset(offset){return void 0!==offset&&this.audioBuffer&&this.audioTimestampOffset_!==offset&&(pushQueue({type:"audio",sourceUpdater:this,action:actions_timestampOffset(offset),name:"timestampOffset"}),this.audioTimestampOffset_=offset),this.audioTimestampOffset_}videoTimestampOffset(offset){return void 0!==offset&&this.videoBuffer&&this.videoTimestampOffset!==offset&&(pushQueue({type:"video",sourceUpdater:this,action:actions_timestampOffset(offset),name:"timestampOffset"}),this.videoTimestampOffset_=offset),this.videoTimestampOffset_}audioQueueCallback(callback){this.audioBuffer&&pushQueue({type:"audio",sourceUpdater:this,action:actions_callback(callback),name:"callback"})}videoQueueCallback(callback){this.videoBuffer&&pushQueue({type:"video",sourceUpdater:this,action:actions_callback(callback),name:"callback"})}dispose(){this.trigger("dispose"),bufferTypes.forEach((type=>{this.abort(type),this.canRemoveSourceBuffer()?this.removeSourceBuffer(type):this["".concat(type,"QueueCallback")]((()=>cleanupBuffer(type,this)))})),this.videoAppendQueued_=!1,this.delayedAudioAppendQueue_.length=0,this.sourceopenListener_&&this.mediaSource.removeEventListener("sourceopen",this.sourceopenListener_),this.off()}}const uint8ToUtf8=uintArray=>decodeURIComponent(escape(String.fromCharCode.apply(null,uintArray))),VTT_LINE_TERMINATORS=new Uint8Array("\n\n".split("").map((char=>char.charCodeAt(0))));class NoVttJsError extends Error{constructor(){super("Trying to parse received VTT cues, but there is no WebVTT. Make sure vtt.js is loaded.")}}class VTTSegmentLoader extends SegmentLoader{constructor(settings){super(settings,arguments.length>1&&void 0!==arguments[1]?arguments[1]:{}),this.mediaSource_=null,this.subtitlesTrack_=null,this.loaderType_="subtitle",this.featuresNativeTextTracks_=settings.featuresNativeTextTracks,this.loadVttJs=settings.loadVttJs,this.shouldSaveSegmentTimingInfo_=!1}createTransmuxer_(){return null}buffered_(){if(!this.subtitlesTrack_||!this.subtitlesTrack_.cues||!this.subtitlesTrack_.cues.length)return createTimeRanges();const cues=this.subtitlesTrack_.cues;return createTimeRanges([[cues[0].startTime,cues[cues.length-1].startTime]])}initSegmentForMap(map){let set=arguments.length>1&&void 0!==arguments[1]&&arguments[1];if(!map)return null;const id=initSegmentId(map);let storedMap=this.initSegments_[id];if(set&&!storedMap&&map.bytes){const combinedByteLength=VTT_LINE_TERMINATORS.byteLength+map.bytes.byteLength,combinedSegment=new Uint8Array(combinedByteLength);combinedSegment.set(map.bytes),combinedSegment.set(VTT_LINE_TERMINATORS,map.bytes.byteLength),this.initSegments_[id]=storedMap={resolvedUri:map.resolvedUri,byterange:map.byterange,bytes:combinedSegment}}return storedMap||map}couldBeginLoading_(){return this.playlist_&&this.subtitlesTrack_&&!this.paused()}init_(){return this.state="READY",this.resetEverything(),this.monitorBuffer_()}track(track){return void 0===track||(this.subtitlesTrack_=track,"INIT"===this.state&&this.couldBeginLoading_()&&this.init_()),this.subtitlesTrack_}remove(start,end){removeCuesFromTrack(start,end,this.subtitlesTrack_)}fillBuffer_(){const segmentInfo=this.chooseNextRequest_();if(segmentInfo){if(null===this.syncController_.timestampOffsetForTimeline(segmentInfo.timeline)){const checkTimestampOffset=()=>{this.state="READY",this.paused()||this.monitorBuffer_()};return this.syncController_.one("timestampoffset",checkTimestampOffset),void(this.state="WAITING_ON_TIMELINE")}this.loadSegment_(segmentInfo)}}timestampOffsetForSegment_(){return null}chooseNextRequest_(){return this.skipEmptySegments_(super.chooseNextRequest_())}skipEmptySegments_(segmentInfo){for(;segmentInfo&&segmentInfo.segment.empty;){if(segmentInfo.mediaIndex+1>=segmentInfo.playlist.segments.length){segmentInfo=null;break}segmentInfo=this.generateSegmentInfo_({playlist:segmentInfo.playlist,mediaIndex:segmentInfo.mediaIndex+1,startOfSegment:segmentInfo.startOfSegment+segmentInfo.duration,isSyncRequest:segmentInfo.isSyncRequest})}return segmentInfo}stopForError(error){this.error(error),this.state="READY",this.pause(),this.trigger("error")}segmentRequestFinished_(error,simpleSegment,result){if(!this.subtitlesTrack_)return void(this.state="READY");if(this.saveTransferStats_(simpleSegment.stats),!this.pendingSegment_)return this.state="READY",void(this.mediaRequestsAborted+=1);if(error)return error.code===REQUEST_ERRORS_TIMEOUT&&this.handleTimeout_(),error.code===REQUEST_ERRORS_ABORTED?this.mediaRequestsAborted+=1:this.mediaRequestsErrored+=1,void this.stopForError(error);const segmentInfo=this.pendingSegment_;this.saveBandwidthRelatedStats_(segmentInfo.duration,simpleSegment.stats),simpleSegment.key&&this.segmentKey(simpleSegment.key,!0),this.state="APPENDING",this.trigger("appending");const segment=segmentInfo.segment;if(segment.map&&(segment.map.bytes=simpleSegment.map.bytes),segmentInfo.bytes=simpleSegment.bytes,"function"!=typeof window.WebVTT&&"function"==typeof this.loadVttJs)return this.state="WAITING_ON_VTTJS",void this.loadVttJs().then((()=>this.segmentRequestFinished_(error,simpleSegment,result)),(()=>this.stopForError({message:"Error loading vtt.js"})));segment.requested=!0;try{this.parseVTTCues_(segmentInfo)}catch(e){return void this.stopForError({message:e.message})}if(this.updateTimeMapping_(segmentInfo,this.syncController_.timelines[segmentInfo.timeline],this.playlist_),segmentInfo.cues.length?segmentInfo.timingInfo={start:segmentInfo.cues[0].startTime,end:segmentInfo.cues[segmentInfo.cues.length-1].endTime}:segmentInfo.timingInfo={start:segmentInfo.startOfSegment,end:segmentInfo.startOfSegment+segmentInfo.duration},segmentInfo.isSyncRequest)return this.trigger("syncinfoupdate"),this.pendingSegment_=null,void(this.state="READY");segmentInfo.byteLength=segmentInfo.bytes.byteLength,this.mediaSecondsLoaded+=segment.duration,segmentInfo.cues.forEach((cue=>{this.subtitlesTrack_.addCue(this.featuresNativeTextTracks_?new window.VTTCue(cue.startTime,cue.endTime,cue.text):cue)})),function(track){const cues=track.cues;if(cues)for(let i=0;i<cues.length;i++){const duplicates=[];let occurrences=0;for(let j=0;j<cues.length;j++)cues[i].startTime===cues[j].startTime&&cues[i].endTime===cues[j].endTime&&cues[i].text===cues[j].text&&(occurrences++,occurrences>1&&duplicates.push(cues[j]));duplicates.length&&duplicates.forEach((dupe=>track.removeCue(dupe)))}}(this.subtitlesTrack_),this.handleAppendsDone_()}handleData_(){}updateTimingInfoEnd_(){}parseVTTCues_(segmentInfo){let decoder,decodeBytesToString=!1;if("function"!=typeof window.WebVTT)throw new NoVttJsError;"function"==typeof window.TextDecoder?decoder=new window.TextDecoder("utf8"):(decoder=window.WebVTT.StringDecoder(),decodeBytesToString=!0);const parser=new window.WebVTT.Parser(window,window.vttjs,decoder);if(segmentInfo.cues=[],segmentInfo.timestampmap={MPEGTS:0,LOCAL:0},parser.oncue=segmentInfo.cues.push.bind(segmentInfo.cues),parser.ontimestampmap=map=>{segmentInfo.timestampmap=map},parser.onparsingerror=error=>{videojs.log.warn("Error encountered when parsing cues: "+error.message)},segmentInfo.segment.map){let mapData=segmentInfo.segment.map.bytes;decodeBytesToString&&(mapData=uint8ToUtf8(mapData)),parser.parse(mapData)}let segmentData=segmentInfo.bytes;decodeBytesToString&&(segmentData=uint8ToUtf8(segmentData)),parser.parse(segmentData),parser.flush()}updateTimeMapping_(segmentInfo,mappingObj,playlist){const segment=segmentInfo.segment;if(!mappingObj)return;if(!segmentInfo.cues.length)return void(segment.empty=!0);const timestampmap=segmentInfo.timestampmap,diff=timestampmap.MPEGTS/clock_1-timestampmap.LOCAL+mappingObj.mapping;if(segmentInfo.cues.forEach((cue=>{cue.startTime+=diff,cue.endTime+=diff})),!playlist.syncInfo){const firstStart=segmentInfo.cues[0].startTime,lastStart=segmentInfo.cues[segmentInfo.cues.length-1].startTime;playlist.syncInfo={mediaSequence:playlist.mediaSequence+segmentInfo.mediaIndex,time:Math.min(firstStart,lastStart-segment.duration)}}}}const findAdCue=function(track,mediaTime){const cues=track.cues;for(let i=0;i<cues.length;i++){const cue=cues[i];if(mediaTime>=cue.adStartTime&&mediaTime<=cue.adEndTime)return cue}return null},syncPointStrategies=[{name:"VOD",run:(syncController,playlist,duration,currentTimeline,currentTime)=>{if(duration!==1/0){return{time:0,segmentIndex:0,partIndex:null}}return null}},{name:"ProgramDateTime",run:(syncController,playlist,duration,currentTimeline,currentTime)=>{if(!Object.keys(syncController.timelineToDatetimeMappings).length)return null;let syncPoint=null,lastDistance=null;const partsAndSegments=getPartsAndSegments(playlist);currentTime=currentTime||0;for(let i=0;i<partsAndSegments.length;i++){const partAndSegment=partsAndSegments[playlist.endList||0===currentTime?i:partsAndSegments.length-(i+1)],segment=partAndSegment.segment,datetimeMapping=syncController.timelineToDatetimeMappings[segment.timeline];if(!datetimeMapping||!segment.dateTimeObject)continue;let start=segment.dateTimeObject.getTime()/1e3+datetimeMapping;if(segment.parts&&"number"==typeof partAndSegment.partIndex)for(let z=0;z<partAndSegment.partIndex;z++)start+=segment.parts[z].duration;const distance=Math.abs(currentTime-start);if(null!==lastDistance&&(0===distance||lastDistance<distance))break;lastDistance=distance,syncPoint={time:start,segmentIndex:partAndSegment.segmentIndex,partIndex:partAndSegment.partIndex}}return syncPoint}},{name:"Segment",run:(syncController,playlist,duration,currentTimeline,currentTime)=>{let syncPoint=null,lastDistance=null;currentTime=currentTime||0;const partsAndSegments=getPartsAndSegments(playlist);for(let i=0;i<partsAndSegments.length;i++){const partAndSegment=partsAndSegments[playlist.endList||0===currentTime?i:partsAndSegments.length-(i+1)],segment=partAndSegment.segment,start=partAndSegment.part&&partAndSegment.part.start||segment&&segment.start;if(segment.timeline===currentTimeline&&void 0!==start){const distance=Math.abs(currentTime-start);if(null!==lastDistance&&lastDistance<distance)break;(!syncPoint||null===lastDistance||lastDistance>=distance)&&(lastDistance=distance,syncPoint={time:start,segmentIndex:partAndSegment.segmentIndex,partIndex:partAndSegment.partIndex})}}return syncPoint}},{name:"Discontinuity",run:(syncController,playlist,duration,currentTimeline,currentTime)=>{let syncPoint=null;if(currentTime=currentTime||0,playlist.discontinuityStarts&&playlist.discontinuityStarts.length){let lastDistance=null;for(let i=0;i<playlist.discontinuityStarts.length;i++){const segmentIndex=playlist.discontinuityStarts[i],discontinuity=playlist.discontinuitySequence+i+1,discontinuitySync=syncController.discontinuities[discontinuity];if(discontinuitySync){const distance=Math.abs(currentTime-discontinuitySync.time);if(null!==lastDistance&&lastDistance<distance)break;(!syncPoint||null===lastDistance||lastDistance>=distance)&&(lastDistance=distance,syncPoint={time:discontinuitySync.time,segmentIndex:segmentIndex,partIndex:null})}}}return syncPoint}},{name:"Playlist",run:(syncController,playlist,duration,currentTimeline,currentTime)=>{if(playlist.syncInfo){return{time:playlist.syncInfo.time,segmentIndex:playlist.syncInfo.mediaSequence-playlist.mediaSequence,partIndex:null}}return null}}];class SyncController extends videojs.EventTarget{constructor(){super(),this.timelines=[],this.discontinuities=[],this.timelineToDatetimeMappings={},this.logger_=logger("SyncController")}getSyncPoint(playlist,duration,currentTimeline,currentTime){const syncPoints=this.runStrategies_(playlist,duration,currentTimeline,currentTime);return syncPoints.length?this.selectSyncPoint_(syncPoints,{key:"time",value:currentTime}):null}getExpiredTime(playlist,duration){if(!playlist||!playlist.segments)return null;const syncPoints=this.runStrategies_(playlist,duration,playlist.discontinuitySequence,0);if(!syncPoints.length)return null;const syncPoint=this.selectSyncPoint_(syncPoints,{key:"segmentIndex",value:0});return syncPoint.segmentIndex>0&&(syncPoint.time*=-1),Math.abs(syncPoint.time+sumDurations({defaultDuration:playlist.targetDuration,durationList:playlist.segments,startIndex:syncPoint.segmentIndex,endIndex:0}))}runStrategies_(playlist,duration,currentTimeline,currentTime){const syncPoints=[];for(let i=0;i<syncPointStrategies.length;i++){const strategy=syncPointStrategies[i],syncPoint=strategy.run(this,playlist,duration,currentTimeline,currentTime);syncPoint&&(syncPoint.strategy=strategy.name,syncPoints.push({strategy:strategy.name,syncPoint:syncPoint}))}return syncPoints}selectSyncPoint_(syncPoints,target){let bestSyncPoint=syncPoints[0].syncPoint,bestDistance=Math.abs(syncPoints[0].syncPoint[target.key]-target.value),bestStrategy=syncPoints[0].strategy;for(let i=1;i<syncPoints.length;i++){const newDistance=Math.abs(syncPoints[i].syncPoint[target.key]-target.value);newDistance<bestDistance&&(bestDistance=newDistance,bestSyncPoint=syncPoints[i].syncPoint,bestStrategy=syncPoints[i].strategy)}return this.logger_("syncPoint for [".concat(target.key,": ").concat(target.value,"] chosen with strategy")+" [".concat(bestStrategy,"]: [time:").concat(bestSyncPoint.time,",")+" segmentIndex:".concat(bestSyncPoint.segmentIndex)+("number"==typeof bestSyncPoint.partIndex?",partIndex:".concat(bestSyncPoint.partIndex):"")+"]"),bestSyncPoint}saveExpiredSegmentInfo(oldPlaylist,newPlaylist){const mediaSequenceDiff=newPlaylist.mediaSequence-oldPlaylist.mediaSequence;if(mediaSequenceDiff>86400)videojs.log.warn("Not saving expired segment info. Media sequence gap ".concat(mediaSequenceDiff," is too large."));else for(let i=mediaSequenceDiff-1;i>=0;i--){const lastRemovedSegment=oldPlaylist.segments[i];if(lastRemovedSegment&&void 0!==lastRemovedSegment.start){newPlaylist.syncInfo={mediaSequence:oldPlaylist.mediaSequence+i,time:lastRemovedSegment.start},this.logger_("playlist refresh sync: [time:".concat(newPlaylist.syncInfo.time,",")+" mediaSequence: ".concat(newPlaylist.syncInfo.mediaSequence,"]")),this.trigger("syncinfoupdate");break}}}setDateTimeMappingForStart(playlist){if(this.timelineToDatetimeMappings={},playlist.segments&&playlist.segments.length&&playlist.segments[0].dateTimeObject){const firstSegment=playlist.segments[0],playlistTimestamp=firstSegment.dateTimeObject.getTime()/1e3;this.timelineToDatetimeMappings[firstSegment.timeline]=-playlistTimestamp}}saveSegmentTimingInfo(_ref73){let{segmentInfo:segmentInfo,shouldSaveTimelineMapping:shouldSaveTimelineMapping}=_ref73;const didCalculateSegmentTimeMapping=this.calculateSegmentTimeMapping_(segmentInfo,segmentInfo.timingInfo,shouldSaveTimelineMapping),segment=segmentInfo.segment;didCalculateSegmentTimeMapping&&(this.saveDiscontinuitySyncInfo_(segmentInfo),segmentInfo.playlist.syncInfo||(segmentInfo.playlist.syncInfo={mediaSequence:segmentInfo.playlist.mediaSequence+segmentInfo.mediaIndex,time:segment.start}));const dateTime=segment.dateTimeObject;segment.discontinuity&&shouldSaveTimelineMapping&&dateTime&&(this.timelineToDatetimeMappings[segment.timeline]=-dateTime.getTime()/1e3)}timestampOffsetForTimeline(timeline){return void 0===this.timelines[timeline]?null:this.timelines[timeline].time}mappingForTimeline(timeline){return void 0===this.timelines[timeline]?null:this.timelines[timeline].mapping}calculateSegmentTimeMapping_(segmentInfo,timingInfo,shouldSaveTimelineMapping){const segment=segmentInfo.segment,part=segmentInfo.part;let start,end,mappingObj=this.timelines[segmentInfo.timeline];if("number"==typeof segmentInfo.timestampOffset)mappingObj={time:segmentInfo.startOfSegment,mapping:segmentInfo.startOfSegment-timingInfo.start},shouldSaveTimelineMapping&&(this.timelines[segmentInfo.timeline]=mappingObj,this.trigger("timestampoffset"),this.logger_("time mapping for timeline ".concat(segmentInfo.timeline,": ")+"[time: ".concat(mappingObj.time,"] [mapping: ").concat(mappingObj.mapping,"]"))),start=segmentInfo.startOfSegment,end=timingInfo.end+mappingObj.mapping;else{if(!mappingObj)return!1;start=timingInfo.start+mappingObj.mapping,end=timingInfo.end+mappingObj.mapping}return part&&(part.start=start,part.end=end),(!segment.start||start<segment.start)&&(segment.start=start),segment.end=end,!0}saveDiscontinuitySyncInfo_(segmentInfo){const playlist=segmentInfo.playlist,segment=segmentInfo.segment;if(segment.discontinuity)this.discontinuities[segment.timeline]={time:segment.start,accuracy:0};else if(playlist.discontinuityStarts&&playlist.discontinuityStarts.length)for(let i=0;i<playlist.discontinuityStarts.length;i++){const segmentIndex=playlist.discontinuityStarts[i],discontinuity=playlist.discontinuitySequence+i+1,mediaIndexDiff=segmentIndex-segmentInfo.mediaIndex,accuracy=Math.abs(mediaIndexDiff);if(!this.discontinuities[discontinuity]||this.discontinuities[discontinuity].accuracy>accuracy){let time;time=mediaIndexDiff<0?segment.start-sumDurations({defaultDuration:playlist.targetDuration,durationList:playlist.segments,startIndex:segmentInfo.mediaIndex,endIndex:segmentIndex}):segment.end+sumDurations({defaultDuration:playlist.targetDuration,durationList:playlist.segments,startIndex:segmentInfo.mediaIndex+1,endIndex:segmentIndex}),this.discontinuities[discontinuity]={time:time,accuracy:accuracy}}}}dispose(){this.trigger("dispose"),this.off()}}class TimelineChangeController extends videojs.EventTarget{constructor(){super(),this.pendingTimelineChanges_={},this.lastTimelineChanges_={}}clearPendingTimelineChange(type){this.pendingTimelineChanges_[type]=null,this.trigger("pendingtimelinechange")}pendingTimelineChange(_ref74){let{type:type,from:from,to:to}=_ref74;return"number"==typeof from&&"number"==typeof to&&(this.pendingTimelineChanges_[type]={type:type,from:from,to:to},this.trigger("pendingtimelinechange")),this.pendingTimelineChanges_[type]}lastTimelineChange(_ref75){let{type:type,from:from,to:to}=_ref75;return"number"==typeof from&&"number"==typeof to&&(this.lastTimelineChanges_[type]={type:type,from:from,to:to},delete this.pendingTimelineChanges_[type],this.trigger("timelinechange")),this.lastTimelineChanges_[type]}dispose(){this.trigger("dispose"),this.pendingTimelineChanges_={},this.lastTimelineChanges_={},this.off()}}const workerCode=transform(getWorkerString((function(){var Stream=function(){function Stream(){this.listeners={}}var _proto=Stream.prototype;return _proto.on=function(type,listener){this.listeners[type]||(this.listeners[type]=[]),this.listeners[type].push(listener)},_proto.off=function(type,listener){if(!this.listeners[type])return!1;var index=this.listeners[type].indexOf(listener);return this.listeners[type]=this.listeners[type].slice(0),this.listeners[type].splice(index,1),index>-1},_proto.trigger=function(type){var callbacks=this.listeners[type];if(callbacks)if(2===arguments.length)for(var length=callbacks.length,i=0;i<length;++i)callbacks[i].call(this,arguments[1]);else for(var args=Array.prototype.slice.call(arguments,1),_length=callbacks.length,_i=0;_i<_length;++_i)callbacks[_i].apply(this,args)},_proto.dispose=function(){this.listeners={}},_proto.pipe=function(destination){this.on("data",(function(data){destination.push(data)}))},Stream}();
+var lib=createXHR,default_1=createXHR;function initParams(uri,options,callback){var params=uri;return isFunction_1(options)?(callback=options,"string"==typeof uri&&(params={uri:uri})):params=_extends_1({},options,{uri:uri}),params.callback=callback,params}function createXHR(uri,options,callback){return _createXHR(options=initParams(uri,options,callback))}function _createXHR(options){if(void 0===options.callback)throw new Error("callback argument missing");var called=!1,callback=function(err,response,body){called||(called=!0,options.callback(err,response,body))};function getBody(){var body=void 0;if(body=xhr.response?xhr.response:xhr.responseText||function(xhr){try{if("document"===xhr.responseType)return xhr.responseXML;var firefoxBugTakenEffect=xhr.responseXML&&"parsererror"===xhr.responseXML.documentElement.nodeName;if(""===xhr.responseType&&!firefoxBugTakenEffect)return xhr.responseXML}catch(e){}return null}(xhr),isJson)try{body=JSON.parse(body)}catch(e){}return body}function errorFunc(evt){return clearTimeout(timeoutTimer),evt instanceof Error||(evt=new Error(""+(evt||"Unknown XMLHttpRequest Error"))),evt.statusCode=0,callback(evt,failureResponse)}function loadFunc(){if(!aborted){var status;clearTimeout(timeoutTimer),status=options.useXDR&&void 0===xhr.status?200:1223===xhr.status?204:xhr.status;var response=failureResponse,err=null;return 0!==status?(response={body:getBody(),statusCode:status,method:method,headers:{},url:uri,rawRequest:xhr},xhr.getAllResponseHeaders&&(response.headers=function(headers){var result={};return headers?(headers.trim().split("\n").forEach((function(row){var index=row.indexOf(":"),key=row.slice(0,index).trim().toLowerCase(),value=row.slice(index+1).trim();void 0===result[key]?result[key]=value:Array.isArray(result[key])?result[key].push(value):result[key]=[result[key],value]})),result):result}(xhr.getAllResponseHeaders()))):err=new Error("Internal XMLHttpRequest Error"),callback(err,response,response.body)}}var key,aborted,xhr=options.xhr||null;xhr||(xhr=options.cors||options.useXDR?new createXHR.XDomainRequest:new createXHR.XMLHttpRequest);var timeoutTimer,uri=xhr.url=options.uri||options.url,method=xhr.method=options.method||"GET",body=options.body||options.data,headers=xhr.headers=options.headers||{},sync=!!options.sync,isJson=!1,failureResponse={body:void 0,headers:{},statusCode:0,method:method,url:uri,rawRequest:xhr};if("json"in options&&!1!==options.json&&(isJson=!0,headers.accept||headers.Accept||(headers.Accept="application/json"),"GET"!==method&&"HEAD"!==method&&(headers["content-type"]||headers["Content-Type"]||(headers["Content-Type"]="application/json"),body=JSON.stringify(!0===options.json?body:options.json))),xhr.onreadystatechange=function(){4===xhr.readyState&&setTimeout(loadFunc,0)},xhr.onload=loadFunc,xhr.onerror=errorFunc,xhr.onprogress=function(){},xhr.onabort=function(){aborted=!0},xhr.ontimeout=errorFunc,xhr.open(method,uri,!sync,options.username,options.password),sync||(xhr.withCredentials=!!options.withCredentials),!sync&&options.timeout>0&&(timeoutTimer=setTimeout((function(){if(!aborted){aborted=!0,xhr.abort("timeout");var e=new Error("XMLHttpRequest timeout");e.code="ETIMEDOUT",errorFunc(e)}}),options.timeout)),xhr.setRequestHeader)for(key in headers)headers.hasOwnProperty(key)&&xhr.setRequestHeader(key,headers[key]);else if(options.headers&&!function(obj){for(var i in obj)if(obj.hasOwnProperty(i))return!1;return!0}(options.headers))throw new Error("Headers cannot be set on an XDomainRequest object");return"responseType"in options&&(xhr.responseType=options.responseType),"beforeSend"in options&&"function"==typeof options.beforeSend&&options.beforeSend(xhr),xhr.send(body||null),xhr}createXHR.XMLHttpRequest=window_1.XMLHttpRequest||function(){},createXHR.XDomainRequest="withCredentials"in new createXHR.XMLHttpRequest?createXHR.XMLHttpRequest:window_1.XDomainRequest,function(array,iterator){for(var i=0;i<array.length;i++)iterator(array[i])}(["get","put","post","patch","head","delete"],(function(method){createXHR["delete"===method?"del":method]=function(uri,options,callback){return(options=initParams(uri,options,callback)).method=method.toUpperCase(),_createXHR(options)}})),lib.default=default_1;const parseCues=function(srcContent,track){const parser=new window.WebVTT.Parser(window,window.vttjs,window.WebVTT.StringDecoder()),errors=[];parser.oncue=function(cue){track.addCue(cue)},parser.onparsingerror=function(error){errors.push(error)},parser.onflush=function(){track.trigger({type:"loadeddata",target:track})},parser.parse(srcContent),errors.length>0&&(window.console&&window.console.groupCollapsed&&window.console.groupCollapsed("Text Track parsing errors for ".concat(track.src)),errors.forEach((error=>log$1.error(error))),window.console&&window.console.groupEnd&&window.console.groupEnd()),parser.flush()},loadTrack=function(src,track){const opts={uri:src},crossOrigin=isCrossOrigin(src);crossOrigin&&(opts.cors=crossOrigin);const withCredentials="use-credentials"===track.tech_.crossOrigin();withCredentials&&(opts.withCredentials=withCredentials),lib(opts,bind_(this,(function(err,response,responseBody){if(err)return log$1.error(err,response);track.loaded_=!0,"function"!=typeof window.WebVTT?track.tech_&&track.tech_.any(["vttjsloaded","vttjserror"],(event=>{if("vttjserror"!==event.type)return parseCues(responseBody,track);log$1.error("vttjs failed to load, stopping trying to process ".concat(track.src))})):parseCues(responseBody,track)})))};class TextTrack extends Track{constructor(){let options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};if(!options.tech)throw new Error("A tech was not provided.");const settings=merge$2(options,{kind:TextTrackKind[options.kind]||"subtitles",language:options.language||options.srclang||""});let mode=TextTrackMode[settings.mode]||"disabled";const default_=settings.default;"metadata"!==settings.kind&&"chapters"!==settings.kind||(mode="hidden"),super(settings),this.tech_=settings.tech,this.cues_=[],this.activeCues_=[],this.preload_=!1!==this.tech_.preloadTextTracks;const cues=new TextTrackCueList(this.cues_),activeCues=new TextTrackCueList(this.activeCues_);let changed=!1;this.timeupdateHandler=bind_(this,(function(){let event=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};this.tech_.isDisposed()||(this.tech_.isReady_?(this.activeCues=this.activeCues,changed&&(this.trigger("cuechange"),changed=!1),"timeupdate"!==event.type&&(this.rvf_=this.tech_.requestVideoFrameCallback(this.timeupdateHandler))):"timeupdate"!==event.type&&(this.rvf_=this.tech_.requestVideoFrameCallback(this.timeupdateHandler)))}));this.tech_.one("dispose",(()=>{this.stopTracking()})),"disabled"!==mode&&this.startTracking(),Object.defineProperties(this,{default:{get:()=>default_,set(){}},mode:{get:()=>mode,set(newMode){TextTrackMode[newMode]&&mode!==newMode&&(mode=newMode,this.preload_||"disabled"===mode||0!==this.cues.length||loadTrack(this.src,this),this.stopTracking(),"disabled"!==mode&&this.startTracking(),this.trigger("modechange"))}},cues:{get(){return this.loaded_?cues:null},set(){}},activeCues:{get(){if(!this.loaded_)return null;if(0===this.cues.length)return activeCues;const ct=this.tech_.currentTime(),active=[];for(let i=0,l=this.cues.length;i<l;i++){const cue=this.cues[i];cue.startTime<=ct&&cue.endTime>=ct&&active.push(cue)}if(changed=!1,active.length!==this.activeCues_.length)changed=!0;else for(let i=0;i<active.length;i++)-1===this.activeCues_.indexOf(active[i])&&(changed=!0);return this.activeCues_=active,activeCues.setCues_(this.activeCues_),activeCues},set(){}}}),settings.src?(this.src=settings.src,this.preload_||(this.loaded_=!0),(this.preload_||"subtitles"!==settings.kind&&"captions"!==settings.kind)&&loadTrack(this.src,this)):this.loaded_=!0}startTracking(){this.rvf_=this.tech_.requestVideoFrameCallback(this.timeupdateHandler),this.tech_.on("timeupdate",this.timeupdateHandler)}stopTracking(){this.rvf_&&(this.tech_.cancelVideoFrameCallback(this.rvf_),this.rvf_=void 0),this.tech_.off("timeupdate",this.timeupdateHandler)}addCue(originalCue){let cue=originalCue;if(!("getCueAsHTML"in cue)){cue=new window.vttjs.VTTCue(originalCue.startTime,originalCue.endTime,originalCue.text);for(const prop in originalCue)prop in cue||(cue[prop]=originalCue[prop]);cue.id=originalCue.id,cue.originalCue_=originalCue}const tracks=this.tech_.textTracks();for(let i=0;i<tracks.length;i++)tracks[i]!==this&&tracks[i].removeCue(cue);this.cues_.push(cue),this.cues.setCues_(this.cues_)}removeCue(removeCue){let i=this.cues_.length;for(;i--;){const cue=this.cues_[i];if(cue===removeCue||cue.originalCue_&&cue.originalCue_===removeCue){this.cues_.splice(i,1),this.cues.setCues_(this.cues_);break}}}}TextTrack.prototype.allowedEvents_={cuechange:"cuechange"};class AudioTrack extends Track{constructor(){let options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};const settings=merge$2(options,{kind:AudioTrackKind[options.kind]||""});super(settings);let enabled=!1;Object.defineProperty(this,"enabled",{get:()=>enabled,set(newEnabled){"boolean"==typeof newEnabled&&newEnabled!==enabled&&(enabled=newEnabled,this.trigger("enabledchange"))}}),settings.enabled&&(this.enabled=settings.enabled),this.loaded_=!0}}class VideoTrack extends Track{constructor(){let options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};const settings=merge$2(options,{kind:VideoTrackKind[options.kind]||""});super(settings);let selected=!1;Object.defineProperty(this,"selected",{get:()=>selected,set(newSelected){"boolean"==typeof newSelected&&newSelected!==selected&&(selected=newSelected,this.trigger("selectedchange"))}}),settings.selected&&(this.selected=settings.selected)}}class HTMLTrackElement extends EventTarget$2{constructor(){let readyState,options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};super();const track=new TextTrack(options);this.kind=track.kind,this.src=track.src,this.srclang=track.language,this.label=track.label,this.default=track.default,Object.defineProperties(this,{readyState:{get:()=>readyState},track:{get:()=>track}}),readyState=HTMLTrackElement.NONE,track.addEventListener("loadeddata",(()=>{readyState=HTMLTrackElement.LOADED,this.trigger({type:"load",target:this})}))}}HTMLTrackElement.prototype.allowedEvents_={load:"load"},HTMLTrackElement.NONE=0,HTMLTrackElement.LOADING=1,HTMLTrackElement.LOADED=2,HTMLTrackElement.ERROR=3;const NORMAL={audio:{ListClass:class extends TrackList{constructor(){let tracks=arguments.length>0&&void 0!==arguments[0]?arguments[0]:[];for(let i=tracks.length-1;i>=0;i--)if(tracks[i].enabled){disableOthers$1(tracks,tracks[i]);break}super(tracks),this.changing_=!1}addTrack(track){track.enabled&&disableOthers$1(this,track),super.addTrack(track),track.addEventListener&&(track.enabledChange_=()=>{this.changing_||(this.changing_=!0,disableOthers$1(this,track),this.changing_=!1,this.trigger("change"))},track.addEventListener("enabledchange",track.enabledChange_))}removeTrack(rtrack){super.removeTrack(rtrack),rtrack.removeEventListener&&rtrack.enabledChange_&&(rtrack.removeEventListener("enabledchange",rtrack.enabledChange_),rtrack.enabledChange_=null)}},TrackClass:AudioTrack,capitalName:"Audio"},video:{ListClass:class extends TrackList{constructor(){let tracks=arguments.length>0&&void 0!==arguments[0]?arguments[0]:[];for(let i=tracks.length-1;i>=0;i--)if(tracks[i].selected){disableOthers(tracks,tracks[i]);break}super(tracks),this.changing_=!1,Object.defineProperty(this,"selectedIndex",{get(){for(let i=0;i<this.length;i++)if(this[i].selected)return i;return-1},set(){}})}addTrack(track){track.selected&&disableOthers(this,track),super.addTrack(track),track.addEventListener&&(track.selectedChange_=()=>{this.changing_||(this.changing_=!0,disableOthers(this,track),this.changing_=!1,this.trigger("change"))},track.addEventListener("selectedchange",track.selectedChange_))}removeTrack(rtrack){super.removeTrack(rtrack),rtrack.removeEventListener&&rtrack.selectedChange_&&(rtrack.removeEventListener("selectedchange",rtrack.selectedChange_),rtrack.selectedChange_=null)}},TrackClass:VideoTrack,capitalName:"Video"},text:{ListClass:TextTrackList,TrackClass:TextTrack,capitalName:"Text"}};Object.keys(NORMAL).forEach((function(type){NORMAL[type].getterName="".concat(type,"Tracks"),NORMAL[type].privateName="".concat(type,"Tracks_")}));const REMOTE={remoteText:{ListClass:TextTrackList,TrackClass:TextTrack,capitalName:"RemoteText",getterName:"remoteTextTracks",privateName:"remoteTextTracks_"},remoteTextEl:{ListClass:class{constructor(){let trackElements=arguments.length>0&&void 0!==arguments[0]?arguments[0]:[];this.trackElements_=[],Object.defineProperty(this,"length",{get(){return this.trackElements_.length}});for(let i=0,length=trackElements.length;i<length;i++)this.addTrackElement_(trackElements[i])}addTrackElement_(trackElement){const index=this.trackElements_.length;""+index in this||Object.defineProperty(this,index,{get(){return this.trackElements_[index]}}),-1===this.trackElements_.indexOf(trackElement)&&this.trackElements_.push(trackElement)}getTrackElementByTrack_(track){let trackElement_;for(let i=0,length=this.trackElements_.length;i<length;i++)if(track===this.trackElements_[i].track){trackElement_=this.trackElements_[i];break}return trackElement_}removeTrackElement_(trackElement){for(let i=0,length=this.trackElements_.length;i<length;i++)if(trackElement===this.trackElements_[i]){this.trackElements_[i].track&&"function"==typeof this.trackElements_[i].track.off&&this.trackElements_[i].track.off(),"function"==typeof this.trackElements_[i].off&&this.trackElements_[i].off(),this.trackElements_.splice(i,1);break}}},TrackClass:HTMLTrackElement,capitalName:"RemoteTextTrackEls",getterName:"remoteTextTrackEls",privateName:"remoteTextTrackEls_"}},ALL=Object.assign({},NORMAL,REMOTE);REMOTE.names=Object.keys(REMOTE),NORMAL.names=Object.keys(NORMAL),ALL.names=[].concat(REMOTE.names).concat(NORMAL.names);var doccy,topLevel=void 0!==commonjsGlobal?commonjsGlobal:"undefined"!=typeof window?window:{};"undefined"!=typeof document?doccy=document:(doccy=topLevel["__GLOBAL_DOCUMENT_CACHE@4"])||(doccy=topLevel["__GLOBAL_DOCUMENT_CACHE@4"]={});var document_1=doccy,_objCreate=Object.create||function(){function F(){}return function(o){if(1!==arguments.length)throw new Error("Object.create shim only accepts one parameter.");return F.prototype=o,new F}}();function ParsingError(errorData,message){this.name="ParsingError",this.code=errorData.code,this.message=message||errorData.message}function parseTimeStamp(input){function computeSeconds(h,m,s,f){return 3600*(0|h)+60*(0|m)+(0|s)+(0|f)/1e3}var m=input.match(/^(\d+):(\d{1,2})(:\d{1,2})?\.(\d{3})/);return m?m[3]?computeSeconds(m[1],m[2],m[3].replace(":",""),m[4]):m[1]>59?computeSeconds(m[1],m[2],0,m[4]):computeSeconds(0,m[1],m[2],m[4]):null}function Settings(){this.values=_objCreate(null)}function parseOptions(input,callback,keyValueDelim,groupDelim){var groups=groupDelim?input.split(groupDelim):[input];for(var i in groups)if("string"==typeof groups[i]){var kv=groups[i].split(keyValueDelim);if(2===kv.length)callback(kv[0].trim(),kv[1].trim())}}function parseCue(input,cue,regionList){var oInput=input;function consumeTimeStamp(){var ts=parseTimeStamp(input);if(null===ts)throw new ParsingError(ParsingError.Errors.BadTimeStamp,"Malformed timestamp: "+oInput);return input=input.replace(/^[^\sa-zA-Z-]+/,""),ts}function skipWhitespace(){input=input.replace(/^\s+/,"")}if(skipWhitespace(),cue.startTime=consumeTimeStamp(),skipWhitespace(),"--\x3e"!==input.substr(0,3))throw new ParsingError(ParsingError.Errors.BadTimeStamp,"Malformed time stamp (time stamps must be separated by '--\x3e'): "+oInput);input=input.substr(3),skipWhitespace(),cue.endTime=consumeTimeStamp(),skipWhitespace(),function(input,cue){var settings=new Settings;parseOptions(input,(function(k,v){switch(k){case"region":for(var i=regionList.length-1;i>=0;i--)if(regionList[i].id===v){settings.set(k,regionList[i].region);break}break;case"vertical":settings.alt(k,v,["rl","lr"]);break;case"line":var vals=v.split(","),vals0=vals[0];settings.integer(k,vals0),settings.percent(k,vals0)&&settings.set("snapToLines",!1),settings.alt(k,vals0,["auto"]),2===vals.length&&settings.alt("lineAlign",vals[1],["start","center","end"]);break;case"position":vals=v.split(","),settings.percent(k,vals[0]),2===vals.length&&settings.alt("positionAlign",vals[1],["start","center","end"]);break;case"size":settings.percent(k,v);break;case"align":settings.alt(k,v,["start","center","end","left","right"])}}),/:/,/\s/),cue.region=settings.get("region",null),cue.vertical=settings.get("vertical","");try{cue.line=settings.get("line","auto")}catch(e){}cue.lineAlign=settings.get("lineAlign","start"),cue.snapToLines=settings.get("snapToLines",!0),cue.size=settings.get("size",100);try{cue.align=settings.get("align","center")}catch(e){cue.align=settings.get("align","middle")}try{cue.position=settings.get("position","auto")}catch(e){cue.position=settings.get("position",{start:0,left:0,center:50,middle:50,end:100,right:100},cue.align)}cue.positionAlign=settings.get("positionAlign",{start:"start",left:"start",center:"center",middle:"center",end:"end",right:"end"},cue.align)}(input,cue)}ParsingError.prototype=_objCreate(Error.prototype),ParsingError.prototype.constructor=ParsingError,ParsingError.Errors={BadSignature:{code:0,message:"Malformed WebVTT signature."},BadTimeStamp:{code:1,message:"Malformed time stamp."}},Settings.prototype={set:function(k,v){this.get(k)||""===v||(this.values[k]=v)},get:function(k,dflt,defaultKey){return defaultKey?this.has(k)?this.values[k]:dflt[defaultKey]:this.has(k)?this.values[k]:dflt},has:function(k){return k in this.values},alt:function(k,v,a){for(var n=0;n<a.length;++n)if(v===a[n]){this.set(k,v);break}},integer:function(k,v){/^-?\d+$/.test(v)&&this.set(k,parseInt(v,10))},percent:function(k,v){return!!(v.match(/^([\d]{1,3})(\.[\d]*)?%$/)&&(v=parseFloat(v))>=0&&v<=100)&&(this.set(k,v),!0)}};var TEXTAREA_ELEMENT=document_1.createElement&&document_1.createElement("textarea"),TAG_NAME={c:"span",i:"i",b:"b",u:"u",ruby:"ruby",rt:"rt",v:"span",lang:"span"},DEFAULT_COLOR_CLASS={white:"rgba(255,255,255,1)",lime:"rgba(0,255,0,1)",cyan:"rgba(0,255,255,1)",red:"rgba(255,0,0,1)",yellow:"rgba(255,255,0,1)",magenta:"rgba(255,0,255,1)",blue:"rgba(0,0,255,1)",black:"rgba(0,0,0,1)"},TAG_ANNOTATION={v:"title",lang:"lang"},NEEDS_PARENT={rt:"ruby"};function parseContent(window,input){function nextToken(){if(!input)return null;var result,m=input.match(/^([^<]*)(<[^>]*>?)?/);return result=m[1]?m[1]:m[2],input=input.substr(result.length),result}function shouldAdd(current,element){return!NEEDS_PARENT[element.localName]||NEEDS_PARENT[element.localName]===current.localName}function createElement(type,annotation){var tagName=TAG_NAME[type];if(!tagName)return null;var element=window.document.createElement(tagName),name=TAG_ANNOTATION[type];return name&&annotation&&(element[name]=annotation.trim()),element}for(var t,s,rootDiv=window.document.createElement("div"),current=rootDiv,tagStack=[];null!==(t=nextToken());)if("<"!==t[0])current.appendChild(window.document.createTextNode((s=t,TEXTAREA_ELEMENT.innerHTML=s,s=TEXTAREA_ELEMENT.textContent,TEXTAREA_ELEMENT.textContent="",s)));else{if("/"===t[1]){tagStack.length&&tagStack[tagStack.length-1]===t.substr(2).replace(">","")&&(tagStack.pop(),current=current.parentNode);continue}var node,ts=parseTimeStamp(t.substr(1,t.length-2));if(ts){node=window.document.createProcessingInstruction("timestamp",ts),current.appendChild(node);continue}var m=t.match(/^<([^.\s/0-9>]+)(\.[^\s\\>]+)?([^>\\]+)?(\\?)>?$/);if(!m)continue;if(!(node=createElement(m[1],m[3])))continue;if(!shouldAdd(current,node))continue;if(m[2]){var classes=m[2].split(".");classes.forEach((function(cl){var bgColor=/^bg_/.test(cl),colorName=bgColor?cl.slice(3):cl;if(DEFAULT_COLOR_CLASS.hasOwnProperty(colorName)){var propName=bgColor?"background-color":"color",propValue=DEFAULT_COLOR_CLASS[colorName];node.style[propName]=propValue}})),node.className=classes.join(" ")}tagStack.push(m[1]),current.appendChild(node),current=node}return rootDiv}var strongRTLRanges=[[1470,1470],[1472,1472],[1475,1475],[1478,1478],[1488,1514],[1520,1524],[1544,1544],[1547,1547],[1549,1549],[1563,1563],[1566,1610],[1645,1647],[1649,1749],[1765,1766],[1774,1775],[1786,1805],[1807,1808],[1810,1839],[1869,1957],[1969,1969],[1984,2026],[2036,2037],[2042,2042],[2048,2069],[2074,2074],[2084,2084],[2088,2088],[2096,2110],[2112,2136],[2142,2142],[2208,2208],[2210,2220],[8207,8207],[64285,64285],[64287,64296],[64298,64310],[64312,64316],[64318,64318],[64320,64321],[64323,64324],[64326,64449],[64467,64829],[64848,64911],[64914,64967],[65008,65020],[65136,65140],[65142,65276],[67584,67589],[67592,67592],[67594,67637],[67639,67640],[67644,67644],[67647,67669],[67671,67679],[67840,67867],[67872,67897],[67903,67903],[67968,68023],[68030,68031],[68096,68096],[68112,68115],[68117,68119],[68121,68147],[68160,68167],[68176,68184],[68192,68223],[68352,68405],[68416,68437],[68440,68466],[68472,68479],[68608,68680],[126464,126467],[126469,126495],[126497,126498],[126500,126500],[126503,126503],[126505,126514],[126516,126519],[126521,126521],[126523,126523],[126530,126530],[126535,126535],[126537,126537],[126539,126539],[126541,126543],[126545,126546],[126548,126548],[126551,126551],[126553,126553],[126555,126555],[126557,126557],[126559,126559],[126561,126562],[126564,126564],[126567,126570],[126572,126578],[126580,126583],[126585,126588],[126590,126590],[126592,126601],[126603,126619],[126625,126627],[126629,126633],[126635,126651],[1114109,1114109]];function isStrongRTLChar(charCode){for(var i=0;i<strongRTLRanges.length;i++){var currentRange=strongRTLRanges[i];if(charCode>=currentRange[0]&&charCode<=currentRange[1])return!0}return!1}function determineBidi(cueDiv){var nodeStack=[],text="";if(!cueDiv||!cueDiv.childNodes)return"ltr";function pushNodes(nodeStack,node){for(var i=node.childNodes.length-1;i>=0;i--)nodeStack.push(node.childNodes[i])}function nextTextNode(nodeStack){if(!nodeStack||!nodeStack.length)return null;var node=nodeStack.pop(),text=node.textContent||node.innerText;if(text){var m=text.match(/^.*(\n|\r)/);return m?(nodeStack.length=0,m[0]):text}return"ruby"===node.tagName?nextTextNode(nodeStack):node.childNodes?(pushNodes(nodeStack,node),nextTextNode(nodeStack)):void 0}for(pushNodes(nodeStack,cueDiv);text=nextTextNode(nodeStack);)for(var i=0;i<text.length;i++)if(isStrongRTLChar(text.charCodeAt(i)))return"rtl";return"ltr"}function StyleBox(){}function CueStyleBox(window,cue,styleOptions){StyleBox.call(this),this.cue=cue,this.cueDiv=parseContent(window,cue.text);var styles={color:"rgba(255, 255, 255, 1)",backgroundColor:"rgba(0, 0, 0, 0.8)",position:"relative",left:0,right:0,top:0,bottom:0,display:"inline",writingMode:""===cue.vertical?"horizontal-tb":"lr"===cue.vertical?"vertical-lr":"vertical-rl",unicodeBidi:"plaintext"};this.applyStyles(styles,this.cueDiv),this.div=window.document.createElement("div"),styles={direction:determineBidi(this.cueDiv),writingMode:""===cue.vertical?"horizontal-tb":"lr"===cue.vertical?"vertical-lr":"vertical-rl",unicodeBidi:"plaintext",textAlign:"middle"===cue.align?"center":cue.align,font:styleOptions.font,whiteSpace:"pre-line",position:"absolute"},this.applyStyles(styles),this.div.appendChild(this.cueDiv);var textPos=0;switch(cue.positionAlign){case"start":case"line-left":textPos=cue.position;break;case"center":textPos=cue.position-cue.size/2;break;case"end":case"line-right":textPos=cue.position-cue.size}""===cue.vertical?this.applyStyles({left:this.formatStyle(textPos,"%"),width:this.formatStyle(cue.size,"%")}):this.applyStyles({top:this.formatStyle(textPos,"%"),height:this.formatStyle(cue.size,"%")}),this.move=function(box){this.applyStyles({top:this.formatStyle(box.top,"px"),bottom:this.formatStyle(box.bottom,"px"),left:this.formatStyle(box.left,"px"),right:this.formatStyle(box.right,"px"),height:this.formatStyle(box.height,"px"),width:this.formatStyle(box.width,"px")})}}function BoxPosition(obj){var lh,height,width,top;if(obj.div){height=obj.div.offsetHeight,width=obj.div.offsetWidth,top=obj.div.offsetTop;var rects=(rects=obj.div.childNodes)&&(rects=rects[0])&&rects.getClientRects&&rects.getClientRects();obj=obj.div.getBoundingClientRect(),lh=rects?Math.max(rects[0]&&rects[0].height||0,obj.height/rects.length):0}this.left=obj.left,this.right=obj.right,this.top=obj.top||top,this.height=obj.height||height,this.bottom=obj.bottom||top+(obj.height||height),this.width=obj.width||width,this.lineHeight=void 0!==lh?lh:obj.lineHeight}function moveBoxToLinePosition(window,styleBox,containerBox,boxPositions){var boxPosition=new BoxPosition(styleBox),cue=styleBox.cue,linePos=function(cue){if("number"==typeof cue.line&&(cue.snapToLines||cue.line>=0&&cue.line<=100))return cue.line;if(!cue.track||!cue.track.textTrackList||!cue.track.textTrackList.mediaElement)return-1;for(var track=cue.track,trackList=track.textTrackList,count=0,i=0;i<trackList.length&&trackList[i]!==track;i++)"showing"===trackList[i].mode&&count++;return-1*++count}(cue),axis=[];if(cue.snapToLines){var size;switch(cue.vertical){case"":axis=["+y","-y"],size="height";break;case"rl":axis=["+x","-x"],size="width";break;case"lr":axis=["-x","+x"],size="width"}var step=boxPosition.lineHeight,position=step*Math.round(linePos),maxPosition=containerBox[size]+step,initialAxis=axis[0];Math.abs(position)>maxPosition&&(position=position<0?-1:1,position*=Math.ceil(maxPosition/step)*step),linePos<0&&(position+=""===cue.vertical?containerBox.height:containerBox.width,axis=axis.reverse()),boxPosition.move(initialAxis,position)}else{var calculatedPercentage=boxPosition.lineHeight/containerBox.height*100;switch(cue.lineAlign){case"center":linePos-=calculatedPercentage/2;break;case"end":linePos-=calculatedPercentage}switch(cue.vertical){case"":styleBox.applyStyles({top:styleBox.formatStyle(linePos,"%")});break;case"rl":styleBox.applyStyles({left:styleBox.formatStyle(linePos,"%")});break;case"lr":styleBox.applyStyles({right:styleBox.formatStyle(linePos,"%")})}axis=["+y","-x","+x","-y"],boxPosition=new BoxPosition(styleBox)}var bestPosition=function(b,axis){for(var bestPosition,specifiedPosition=new BoxPosition(b),percentage=1,i=0;i<axis.length;i++){for(;b.overlapsOppositeAxis(containerBox,axis[i])||b.within(containerBox)&&b.overlapsAny(boxPositions);)b.move(axis[i]);if(b.within(containerBox))return b;var p=b.intersectPercentage(containerBox);percentage>p&&(bestPosition=new BoxPosition(b),percentage=p),b=new BoxPosition(specifiedPosition)}return bestPosition||specifiedPosition}(boxPosition,axis);styleBox.move(bestPosition.toCSSCompatValues(containerBox))}function WebVTT$1(){}StyleBox.prototype.applyStyles=function(styles,div){for(var prop in div=div||this.div,styles)styles.hasOwnProperty(prop)&&(div.style[prop]=styles[prop])},StyleBox.prototype.formatStyle=function(val,unit){return 0===val?0:val+unit},CueStyleBox.prototype=_objCreate(StyleBox.prototype),CueStyleBox.prototype.constructor=CueStyleBox,BoxPosition.prototype.move=function(axis,toMove){switch(toMove=void 0!==toMove?toMove:this.lineHeight,axis){case"+x":this.left+=toMove,this.right+=toMove;break;case"-x":this.left-=toMove,this.right-=toMove;break;case"+y":this.top+=toMove,this.bottom+=toMove;break;case"-y":this.top-=toMove,this.bottom-=toMove}},BoxPosition.prototype.overlaps=function(b2){return this.left<b2.right&&this.right>b2.left&&this.top<b2.bottom&&this.bottom>b2.top},BoxPosition.prototype.overlapsAny=function(boxes){for(var i=0;i<boxes.length;i++)if(this.overlaps(boxes[i]))return!0;return!1},BoxPosition.prototype.within=function(container){return this.top>=container.top&&this.bottom<=container.bottom&&this.left>=container.left&&this.right<=container.right},BoxPosition.prototype.overlapsOppositeAxis=function(container,axis){switch(axis){case"+x":return this.left<container.left;case"-x":return this.right>container.right;case"+y":return this.top<container.top;case"-y":return this.bottom>container.bottom}},BoxPosition.prototype.intersectPercentage=function(b2){return Math.max(0,Math.min(this.right,b2.right)-Math.max(this.left,b2.left))*Math.max(0,Math.min(this.bottom,b2.bottom)-Math.max(this.top,b2.top))/(this.height*this.width)},BoxPosition.prototype.toCSSCompatValues=function(reference){return{top:this.top-reference.top,bottom:reference.bottom-this.bottom,left:this.left-reference.left,right:reference.right-this.right,height:this.height,width:this.width}},BoxPosition.getSimpleBoxPosition=function(obj){var height=obj.div?obj.div.offsetHeight:obj.tagName?obj.offsetHeight:0,width=obj.div?obj.div.offsetWidth:obj.tagName?obj.offsetWidth:0,top=obj.div?obj.div.offsetTop:obj.tagName?obj.offsetTop:0;return{left:(obj=obj.div?obj.div.getBoundingClientRect():obj.tagName?obj.getBoundingClientRect():obj).left,right:obj.right,top:obj.top||top,height:obj.height||height,bottom:obj.bottom||top+(obj.height||height),width:obj.width||width}},WebVTT$1.StringDecoder=function(){return{decode:function(data){if(!data)return"";if("string"!=typeof data)throw new Error("Error - expected string data.");return decodeURIComponent(encodeURIComponent(data))}}},WebVTT$1.convertCueToDOMTree=function(window,cuetext){return window&&cuetext?parseContent(window,cuetext):null};WebVTT$1.processCues=function(window,cues,overlay){if(!window||!cues||!overlay)return null;for(;overlay.firstChild;)overlay.removeChild(overlay.firstChild);var paddedOverlay=window.document.createElement("div");if(paddedOverlay.style.position="absolute",paddedOverlay.style.left="0",paddedOverlay.style.right="0",paddedOverlay.style.top="0",paddedOverlay.style.bottom="0",paddedOverlay.style.margin="1.5%",overlay.appendChild(paddedOverlay),function(cues){for(var i=0;i<cues.length;i++)if(cues[i].hasBeenReset||!cues[i].displayState)return!0;return!1}(cues)){var boxPositions=[],containerBox=BoxPosition.getSimpleBoxPosition(paddedOverlay),styleOptions={font:Math.round(.05*containerBox.height*100)/100+"px sans-serif"};!function(){for(var styleBox,cue,i=0;i<cues.length;i++)cue=cues[i],styleBox=new CueStyleBox(window,cue,styleOptions),paddedOverlay.appendChild(styleBox.div),moveBoxToLinePosition(0,styleBox,containerBox,boxPositions),cue.displayState=styleBox.div,boxPositions.push(BoxPosition.getSimpleBoxPosition(styleBox))}()}else for(var i=0;i<cues.length;i++)paddedOverlay.appendChild(cues[i].displayState)},WebVTT$1.Parser=function(window,vttjs,decoder){decoder||(decoder=vttjs,vttjs={}),vttjs||(vttjs={}),this.window=window,this.vttjs=vttjs,this.state="INITIAL",this.buffer="",this.decoder=decoder||new TextDecoder("utf8"),this.regionList=[]},WebVTT$1.Parser.prototype={reportOrThrowError:function(e){if(!(e instanceof ParsingError))throw e;this.onparsingerror&&this.onparsingerror(e)},parse:function(data){var self=this;function collectNextLine(){for(var buffer=self.buffer,pos=0;pos<buffer.length&&"\r"!==buffer[pos]&&"\n"!==buffer[pos];)++pos;var line=buffer.substr(0,pos);return"\r"===buffer[pos]&&++pos,"\n"===buffer[pos]&&++pos,self.buffer=buffer.substr(pos),line}function parseHeader(input){input.match(/X-TIMESTAMP-MAP/)?parseOptions(input,(function(k,v){if("X-TIMESTAMP-MAP"===k)!function(input){var settings=new Settings;parseOptions(input,(function(k,v){switch(k){case"MPEGT":settings.integer(k+"S",v);break;case"LOCA":settings.set(k+"L",parseTimeStamp(v))}}),/[^\d]:/,/,/),self.ontimestampmap&&self.ontimestampmap({MPEGTS:settings.get("MPEGTS"),LOCAL:settings.get("LOCAL")})}(v)}),/=/):parseOptions(input,(function(k,v){if("Region"===k)!function(input){var settings=new Settings;if(parseOptions(input,(function(k,v){switch(k){case"id":settings.set(k,v);break;case"width":settings.percent(k,v);break;case"lines":settings.integer(k,v);break;case"regionanchor":case"viewportanchor":var xy=v.split(",");if(2!==xy.length)break;var anchor=new Settings;if(anchor.percent("x",xy[0]),anchor.percent("y",xy[1]),!anchor.has("x")||!anchor.has("y"))break;settings.set(k+"X",anchor.get("x")),settings.set(k+"Y",anchor.get("y"));break;case"scroll":settings.alt(k,v,["up"])}}),/=/,/\s/),settings.has("id")){var region=new(self.vttjs.VTTRegion||self.window.VTTRegion);region.width=settings.get("width",100),region.lines=settings.get("lines",3),region.regionAnchorX=settings.get("regionanchorX",0),region.regionAnchorY=settings.get("regionanchorY",100),region.viewportAnchorX=settings.get("viewportanchorX",0),region.viewportAnchorY=settings.get("viewportanchorY",100),region.scroll=settings.get("scroll",""),self.onregion&&self.onregion(region),self.regionList.push({id:settings.get("id"),region:region})}}(v)}),/:/)}data&&(self.buffer+=self.decoder.decode(data,{stream:!0}));try{var line;if("INITIAL"===self.state){if(!/\r\n|\n/.test(self.buffer))return this;var m=(line=collectNextLine()).match(/^WEBVTT([ \t].*)?$/);if(!m||!m[0])throw new ParsingError(ParsingError.Errors.BadSignature);self.state="HEADER"}for(var alreadyCollectedLine=!1;self.buffer;){if(!/\r\n|\n/.test(self.buffer))return this;switch(alreadyCollectedLine?alreadyCollectedLine=!1:line=collectNextLine(),self.state){case"HEADER":/:/.test(line)?parseHeader(line):line||(self.state="ID");continue;case"NOTE":line||(self.state="ID");continue;case"ID":if(/^NOTE($|[ \t])/.test(line)){self.state="NOTE";break}if(!line)continue;self.cue=new(self.vttjs.VTTCue||self.window.VTTCue)(0,0,"");try{self.cue.align="center"}catch(e){self.cue.align="middle"}if(self.state="CUE",-1===line.indexOf("--\x3e")){self.cue.id=line;continue}case"CUE":try{parseCue(line,self.cue,self.regionList)}catch(e){self.reportOrThrowError(e),self.cue=null,self.state="BADCUE";continue}self.state="CUETEXT";continue;case"CUETEXT":var hasSubstring=-1!==line.indexOf("--\x3e");if(!line||hasSubstring&&(alreadyCollectedLine=!0)){self.oncue&&self.oncue(self.cue),self.cue=null,self.state="ID";continue}self.cue.text&&(self.cue.text+="\n"),self.cue.text+=line.replace(/\u2028/g,"\n").replace(/u2029/g,"\n");continue;case"BADCUE":line||(self.state="ID");continue}}}catch(e){self.reportOrThrowError(e),"CUETEXT"===self.state&&self.cue&&self.oncue&&self.oncue(self.cue),self.cue=null,self.state="INITIAL"===self.state?"BADWEBVTT":"BADCUE"}return this},flush:function(){try{if(this.buffer+=this.decoder.decode(),(this.cue||"HEADER"===this.state)&&(this.buffer+="\n\n",this.parse()),"INITIAL"===this.state)throw new ParsingError(ParsingError.Errors.BadSignature)}catch(e){this.reportOrThrowError(e)}return this.onflush&&this.onflush(),this}};var vtt=WebVTT$1,directionSetting={"":1,lr:1,rl:1},alignSetting={start:1,center:1,end:1,left:1,right:1,auto:1,"line-left":1,"line-right":1};function findAlignSetting(value){return"string"==typeof value&&(!!alignSetting[value.toLowerCase()]&&value.toLowerCase())}function VTTCue(startTime,endTime,text){this.hasBeenReset=!1;var _id="",_pauseOnExit=!1,_startTime=startTime,_endTime=endTime,_text=text,_region=null,_vertical="",_snapToLines=!0,_line="auto",_lineAlign="start",_position="auto",_positionAlign="auto",_size=100,_align="center";Object.defineProperties(this,{id:{enumerable:!0,get:function(){return _id},set:function(value){_id=""+value}},pauseOnExit:{enumerable:!0,get:function(){return _pauseOnExit},set:function(value){_pauseOnExit=!!value}},startTime:{enumerable:!0,get:function(){return _startTime},set:function(value){if("number"!=typeof value)throw new TypeError("Start time must be set to a number.");_startTime=value,this.hasBeenReset=!0}},endTime:{enumerable:!0,get:function(){return _endTime},set:function(value){if("number"!=typeof value)throw new TypeError("End time must be set to a number.");_endTime=value,this.hasBeenReset=!0}},text:{enumerable:!0,get:function(){return _text},set:function(value){_text=""+value,this.hasBeenReset=!0}},region:{enumerable:!0,get:function(){return _region},set:function(value){_region=value,this.hasBeenReset=!0}},vertical:{enumerable:!0,get:function(){return _vertical},set:function(value){var setting=function(value){return"string"==typeof value&&!!directionSetting[value.toLowerCase()]&&value.toLowerCase()}(value);if(!1===setting)throw new SyntaxError("Vertical: an invalid or illegal direction string was specified.");_vertical=setting,this.hasBeenReset=!0}},snapToLines:{enumerable:!0,get:function(){return _snapToLines},set:function(value){_snapToLines=!!value,this.hasBeenReset=!0}},line:{enumerable:!0,get:function(){return _line},set:function(value){if("number"!=typeof value&&"auto"!==value)throw new SyntaxError("Line: an invalid number or illegal string was specified.");_line=value,this.hasBeenReset=!0}},lineAlign:{enumerable:!0,get:function(){return _lineAlign},set:function(value){var setting=findAlignSetting(value);setting?(_lineAlign=setting,this.hasBeenReset=!0):console.warn("lineAlign: an invalid or illegal string was specified.")}},position:{enumerable:!0,get:function(){return _position},set:function(value){if(value<0||value>100)throw new Error("Position must be between 0 and 100.");_position=value,this.hasBeenReset=!0}},positionAlign:{enumerable:!0,get:function(){return _positionAlign},set:function(value){var setting=findAlignSetting(value);setting?(_positionAlign=setting,this.hasBeenReset=!0):console.warn("positionAlign: an invalid or illegal string was specified.")}},size:{enumerable:!0,get:function(){return _size},set:function(value){if(value<0||value>100)throw new Error("Size must be between 0 and 100.");_size=value,this.hasBeenReset=!0}},align:{enumerable:!0,get:function(){return _align},set:function(value){var setting=findAlignSetting(value);if(!setting)throw new SyntaxError("align: an invalid or illegal alignment string was specified.");_align=setting,this.hasBeenReset=!0}}}),this.displayState=void 0}VTTCue.prototype.getCueAsHTML=function(){return WebVTT.convertCueToDOMTree(window,this.text)};var vttcue=VTTCue,scrollSetting={"":!0,up:!0};function isValidPercentValue(value){return"number"==typeof value&&value>=0&&value<=100}var vttregion=function(){var _width=100,_lines=3,_regionAnchorX=0,_regionAnchorY=100,_viewportAnchorX=0,_viewportAnchorY=100,_scroll="";Object.defineProperties(this,{width:{enumerable:!0,get:function(){return _width},set:function(value){if(!isValidPercentValue(value))throw new Error("Width must be between 0 and 100.");_width=value}},lines:{enumerable:!0,get:function(){return _lines},set:function(value){if("number"!=typeof value)throw new TypeError("Lines must be set to a number.");_lines=value}},regionAnchorY:{enumerable:!0,get:function(){return _regionAnchorY},set:function(value){if(!isValidPercentValue(value))throw new Error("RegionAnchorX must be between 0 and 100.");_regionAnchorY=value}},regionAnchorX:{enumerable:!0,get:function(){return _regionAnchorX},set:function(value){if(!isValidPercentValue(value))throw new Error("RegionAnchorY must be between 0 and 100.");_regionAnchorX=value}},viewportAnchorY:{enumerable:!0,get:function(){return _viewportAnchorY},set:function(value){if(!isValidPercentValue(value))throw new Error("ViewportAnchorY must be between 0 and 100.");_viewportAnchorY=value}},viewportAnchorX:{enumerable:!0,get:function(){return _viewportAnchorX},set:function(value){if(!isValidPercentValue(value))throw new Error("ViewportAnchorX must be between 0 and 100.");_viewportAnchorX=value}},scroll:{enumerable:!0,get:function(){return _scroll},set:function(value){var setting=function(value){return"string"==typeof value&&!!scrollSetting[value.toLowerCase()]&&value.toLowerCase()}(value);!1===setting?console.warn("Scroll: an invalid or illegal string was specified."):_scroll=setting}}})},browserIndex=createCommonjsModule((function(module){var vttjs=module.exports={WebVTT:vtt,VTTCue:vttcue,VTTRegion:vttregion};window_1.vttjs=vttjs,window_1.WebVTT=vttjs.WebVTT;var cueShim=vttjs.VTTCue,regionShim=vttjs.VTTRegion,nativeVTTCue=window_1.VTTCue,nativeVTTRegion=window_1.VTTRegion;vttjs.shim=function(){window_1.VTTCue=cueShim,window_1.VTTRegion=regionShim},vttjs.restore=function(){window_1.VTTCue=nativeVTTCue,window_1.VTTRegion=nativeVTTRegion},window_1.VTTCue||vttjs.shim()}));browserIndex.WebVTT,browserIndex.VTTCue,browserIndex.VTTRegion;class Tech extends Component$1{constructor(){let options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},ready=arguments.length>1&&void 0!==arguments[1]?arguments[1]:function(){};options.reportTouchActivity=!1,super(null,options,ready),this.onDurationChange_=e=>this.onDurationChange(e),this.trackProgress_=e=>this.trackProgress(e),this.trackCurrentTime_=e=>this.trackCurrentTime(e),this.stopTrackingCurrentTime_=e=>this.stopTrackingCurrentTime(e),this.disposeSourceHandler_=e=>this.disposeSourceHandler(e),this.queuedHanders_=new Set,this.hasStarted_=!1,this.on("playing",(function(){this.hasStarted_=!0})),this.on("loadstart",(function(){this.hasStarted_=!1})),ALL.names.forEach((name=>{const props=ALL[name];options&&options[props.getterName]&&(this[props.privateName]=options[props.getterName])})),this.featuresProgressEvents||this.manualProgressOn(),this.featuresTimeupdateEvents||this.manualTimeUpdatesOn(),["Text","Audio","Video"].forEach((track=>{!1===options["native".concat(track,"Tracks")]&&(this["featuresNative".concat(track,"Tracks")]=!1)})),!1===options.nativeCaptions||!1===options.nativeTextTracks?this.featuresNativeTextTracks=!1:!0!==options.nativeCaptions&&!0!==options.nativeTextTracks||(this.featuresNativeTextTracks=!0),this.featuresNativeTextTracks||this.emulateTextTracks(),this.preloadTextTracks=!1!==options.preloadTextTracks,this.autoRemoteTextTracks_=new ALL.text.ListClass,this.initTrackListeners(),options.nativeControlsForTouch||this.emitTapEvents(),this.constructor&&(this.name_=this.constructor.name||"Unknown Tech")}triggerSourceset(src){this.isReady_||this.one("ready",(()=>this.setTimeout((()=>this.triggerSourceset(src)),1))),this.trigger({src:src,type:"sourceset"})}manualProgressOn(){this.on("durationchange",this.onDurationChange_),this.manualProgress=!0,this.one("ready",this.trackProgress_)}manualProgressOff(){this.manualProgress=!1,this.stopTrackingProgress(),this.off("durationchange",this.onDurationChange_)}trackProgress(event){this.stopTrackingProgress(),this.progressInterval=this.setInterval(bind_(this,(function(){const numBufferedPercent=this.bufferedPercent();this.bufferedPercent_!==numBufferedPercent&&this.trigger("progress"),this.bufferedPercent_=numBufferedPercent,1===numBufferedPercent&&this.stopTrackingProgress()})),500)}onDurationChange(event){this.duration_=this.duration()}buffered(){return createTimeRanges$1(0,0)}bufferedPercent(){return bufferedPercent(this.buffered(),this.duration_)}stopTrackingProgress(){this.clearInterval(this.progressInterval)}manualTimeUpdatesOn(){this.manualTimeUpdates=!0,this.on("play",this.trackCurrentTime_),this.on("pause",this.stopTrackingCurrentTime_)}manualTimeUpdatesOff(){this.manualTimeUpdates=!1,this.stopTrackingCurrentTime(),this.off("play",this.trackCurrentTime_),this.off("pause",this.stopTrackingCurrentTime_)}trackCurrentTime(){this.currentTimeInterval&&this.stopTrackingCurrentTime(),this.currentTimeInterval=this.setInterval((function(){this.trigger({type:"timeupdate",target:this,manuallyTriggered:!0})}),250)}stopTrackingCurrentTime(){this.clearInterval(this.currentTimeInterval),this.trigger({type:"timeupdate",target:this,manuallyTriggered:!0})}dispose(){this.clearTracks(NORMAL.names),this.manualProgress&&this.manualProgressOff(),this.manualTimeUpdates&&this.manualTimeUpdatesOff(),super.dispose()}clearTracks(types){(types=[].concat(types)).forEach((type=>{const list=this["".concat(type,"Tracks")]()||[];let i=list.length;for(;i--;){const track=list[i];"text"===type&&this.removeRemoteTextTrack(track),list.removeTrack(track)}}))}cleanupAutoTextTracks(){const list=this.autoRemoteTextTracks_||[];let i=list.length;for(;i--;){const track=list[i];this.removeRemoteTextTrack(track)}}reset(){}crossOrigin(){}setCrossOrigin(){}error(err){return void 0!==err&&(this.error_=new MediaError(err),this.trigger("error")),this.error_}played(){return this.hasStarted_?createTimeRanges$1(0,0):createTimeRanges$1()}play(){}setScrubbing(_isScrubbing){}scrubbing(){}setCurrentTime(_seconds){this.manualTimeUpdates&&this.trigger({type:"timeupdate",target:this,manuallyTriggered:!0})}initTrackListeners(){NORMAL.names.forEach((name=>{const props=NORMAL[name],trackListChanges=()=>{this.trigger("".concat(name,"trackchange"))},tracks=this[props.getterName]();tracks.addEventListener("removetrack",trackListChanges),tracks.addEventListener("addtrack",trackListChanges),this.on("dispose",(()=>{tracks.removeEventListener("removetrack",trackListChanges),tracks.removeEventListener("addtrack",trackListChanges)}))}))}addWebVttScript_(){if(!window.WebVTT)if(document.body.contains(this.el())){if(!this.options_["vtt.js"]&&isPlain(browserIndex)&&Object.keys(browserIndex).length>0)return void this.trigger("vttjsloaded");const script=document.createElement("script");script.src=this.options_["vtt.js"]||"https://vjs.zencdn.net/vttjs/0.14.1/vtt.min.js",script.onload=()=>{this.trigger("vttjsloaded")},script.onerror=()=>{this.trigger("vttjserror")},this.on("dispose",(()=>{script.onload=null,script.onerror=null})),window.WebVTT=!0,this.el().parentNode.appendChild(script)}else this.ready(this.addWebVttScript_)}emulateTextTracks(){const tracks=this.textTracks(),remoteTracks=this.remoteTextTracks(),handleAddTrack=e=>tracks.addTrack(e.track),handleRemoveTrack=e=>tracks.removeTrack(e.track);remoteTracks.on("addtrack",handleAddTrack),remoteTracks.on("removetrack",handleRemoveTrack),this.addWebVttScript_();const updateDisplay=()=>this.trigger("texttrackchange"),textTracksChanges=()=>{updateDisplay();for(let i=0;i<tracks.length;i++){const track=tracks[i];track.removeEventListener("cuechange",updateDisplay),"showing"===track.mode&&track.addEventListener("cuechange",updateDisplay)}};textTracksChanges(),tracks.addEventListener("change",textTracksChanges),tracks.addEventListener("addtrack",textTracksChanges),tracks.addEventListener("removetrack",textTracksChanges),this.on("dispose",(function(){remoteTracks.off("addtrack",handleAddTrack),remoteTracks.off("removetrack",handleRemoveTrack),tracks.removeEventListener("change",textTracksChanges),tracks.removeEventListener("addtrack",textTracksChanges),tracks.removeEventListener("removetrack",textTracksChanges);for(let i=0;i<tracks.length;i++){tracks[i].removeEventListener("cuechange",updateDisplay)}}))}addTextTrack(kind,label,language){if(!kind)throw new Error("TextTrack kind is required but was not provided");return function(self,kind,label,language){let options=arguments.length>4&&void 0!==arguments[4]?arguments[4]:{};const tracks=self.textTracks();options.kind=kind,label&&(options.label=label),language&&(options.language=language),options.tech=self;const track=new ALL.text.TrackClass(options);return tracks.addTrack(track),track}(this,kind,label,language)}createRemoteTextTrack(options){const track=merge$2(options,{tech:this});return new REMOTE.remoteTextEl.TrackClass(track)}addRemoteTextTrack(){let options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},manualCleanup=arguments.length>1?arguments[1]:void 0;const htmlTrackElement=this.createRemoteTextTrack(options);return"boolean"!=typeof manualCleanup&&(manualCleanup=!1),this.remoteTextTrackEls().addTrackElement_(htmlTrackElement),this.remoteTextTracks().addTrack(htmlTrackElement.track),!1===manualCleanup&&this.ready((()=>this.autoRemoteTextTracks_.addTrack(htmlTrackElement.track))),htmlTrackElement}removeRemoteTextTrack(track){const trackElement=this.remoteTextTrackEls().getTrackElementByTrack_(track);this.remoteTextTrackEls().removeTrackElement_(trackElement),this.remoteTextTracks().removeTrack(track),this.autoRemoteTextTracks_.removeTrack(track)}getVideoPlaybackQuality(){return{}}requestPictureInPicture(){return Promise.reject()}disablePictureInPicture(){return!0}setDisablePictureInPicture(){}requestVideoFrameCallback(cb){const id=newGUID();return!this.isReady_||this.paused()?(this.queuedHanders_.add(id),this.one("playing",(()=>{this.queuedHanders_.has(id)&&(this.queuedHanders_.delete(id),cb())}))):this.requestNamedAnimationFrame(id,cb),id}cancelVideoFrameCallback(id){this.queuedHanders_.has(id)?this.queuedHanders_.delete(id):this.cancelNamedAnimationFrame(id)}setPoster(){}playsinline(){}setPlaysinline(){}overrideNativeAudioTracks(override){}overrideNativeVideoTracks(override){}canPlayType(_type){return""}static canPlayType(_type){return""}static canPlaySource(srcObj,options){return Tech.canPlayType(srcObj.type)}static isTech(component){return component.prototype instanceof Tech||component instanceof Tech||component===Tech}static registerTech(name,tech){if(Tech.techs_||(Tech.techs_={}),!Tech.isTech(tech))throw new Error("Tech ".concat(name," must be a Tech"));if(!Tech.canPlayType)throw new Error("Techs must have a static canPlayType method on them");if(!Tech.canPlaySource)throw new Error("Techs must have a static canPlaySource method on them");return name=toTitleCase$1(name),Tech.techs_[name]=tech,Tech.techs_[toLowerCase(name)]=tech,"Tech"!==name&&Tech.defaultTechOrder_.push(name),tech}static getTech(name){if(name)return Tech.techs_&&Tech.techs_[name]?Tech.techs_[name]:(name=toTitleCase$1(name),window&&window.videojs&&window.videojs[name]?(log$1.warn("The ".concat(name," tech was added to the videojs object when it should be registered using videojs.registerTech(name, tech)")),window.videojs[name]):void 0)}}ALL.names.forEach((function(name){const props=ALL[name];Tech.prototype[props.getterName]=function(){return this[props.privateName]=this[props.privateName]||new props.ListClass,this[props.privateName]}})),Tech.prototype.featuresVolumeControl=!0,Tech.prototype.featuresMuteControl=!0,Tech.prototype.featuresFullscreenResize=!1,Tech.prototype.featuresPlaybackRate=!1,Tech.prototype.featuresProgressEvents=!1,Tech.prototype.featuresSourceset=!1,Tech.prototype.featuresTimeupdateEvents=!1,Tech.prototype.featuresNativeTextTracks=!1,Tech.prototype.featuresVideoFrameCallback=!1,Tech.withSourceHandlers=function(_Tech){_Tech.registerSourceHandler=function(handler,index){let handlers=_Tech.sourceHandlers;handlers||(handlers=_Tech.sourceHandlers=[]),void 0===index&&(index=handlers.length),handlers.splice(index,0,handler)},_Tech.canPlayType=function(type){const handlers=_Tech.sourceHandlers||[];let can;for(let i=0;i<handlers.length;i++)if(can=handlers[i].canPlayType(type),can)return can;return""},_Tech.selectSourceHandler=function(source,options){const handlers=_Tech.sourceHandlers||[];let can;for(let i=0;i<handlers.length;i++)if(can=handlers[i].canHandleSource(source,options),can)return handlers[i];return null},_Tech.canPlaySource=function(srcObj,options){const sh=_Tech.selectSourceHandler(srcObj,options);return sh?sh.canHandleSource(srcObj,options):""};["seekable","seeking","duration"].forEach((function(fnName){const originalFn=this[fnName];"function"==typeof originalFn&&(this[fnName]=function(){return this.sourceHandler_&&this.sourceHandler_[fnName]?this.sourceHandler_[fnName].apply(this.sourceHandler_,arguments):originalFn.apply(this,arguments)})}),_Tech.prototype),_Tech.prototype.setSource=function(source){let sh=_Tech.selectSourceHandler(source,this.options_);sh||(_Tech.nativeSourceHandler?sh=_Tech.nativeSourceHandler:log$1.error("No source handler found for the current source.")),this.disposeSourceHandler(),this.off("dispose",this.disposeSourceHandler_),sh!==_Tech.nativeSourceHandler&&(this.currentSource_=source),this.sourceHandler_=sh.handleSource(source,this,this.options_),this.one("dispose",this.disposeSourceHandler_)},_Tech.prototype.disposeSourceHandler=function(){this.currentSource_&&(this.clearTracks(["audio","video"]),this.currentSource_=null),this.cleanupAutoTextTracks(),this.sourceHandler_&&(this.sourceHandler_.dispose&&this.sourceHandler_.dispose(),this.sourceHandler_=null)}},Component$1.registerComponent("Tech",Tech),Tech.registerTech("Tech",Tech),Tech.defaultTechOrder_=[];const middlewares={},middlewareInstances={},TERMINATOR={};function setSource(player,src,next){player.setTimeout((()=>setSourceHelper(src,middlewares[src.type],next,player)),1)}function mediate(middleware,tech,method){let arg=arguments.length>3&&void 0!==arguments[3]?arguments[3]:null;const callMethod="call"+toTitleCase$1(method),middlewareValue=middleware.reduce(middlewareIterator(callMethod),arg),terminated=middlewareValue===TERMINATOR,returnValue=terminated?null:tech[method](middlewareValue);return executeRight(middleware,method,returnValue,terminated),returnValue}const allowedGetters={buffered:1,currentTime:1,duration:1,muted:1,played:1,paused:1,seekable:1,volume:1,ended:1},allowedSetters={setCurrentTime:1,setMuted:1,setVolume:1},allowedMediators={play:1,pause:1};function middlewareIterator(method){return(value,mw)=>value===TERMINATOR?TERMINATOR:mw[method]?mw[method](value):value}function executeRight(mws,method,value,terminated){for(let i=mws.length-1;i>=0;i--){const mw=mws[i];mw[method]&&mw[method](terminated,value)}}function getOrCreateFactory(player,mwFactory){const mws=middlewareInstances[player.id()];let mw=null;if(null==mws)return mw=mwFactory(player),middlewareInstances[player.id()]=[[mwFactory,mw]],mw;for(let i=0;i<mws.length;i++){const[mwf,mwi]=mws[i];mwf===mwFactory&&(mw=mwi)}return null===mw&&(mw=mwFactory(player),mws.push([mwFactory,mw])),mw}function setSourceHelper(){let src=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},middleware=arguments.length>1&&void 0!==arguments[1]?arguments[1]:[],next=arguments.length>2?arguments[2]:void 0,player=arguments.length>3?arguments[3]:void 0,acc=arguments.length>4&&void 0!==arguments[4]?arguments[4]:[],lastRun=arguments.length>5&&void 0!==arguments[5]&&arguments[5];const[mwFactory,...mwrest]=middleware;if("string"==typeof mwFactory)setSourceHelper(src,middlewares[mwFactory],next,player,acc,lastRun);else if(mwFactory){const mw=getOrCreateFactory(player,mwFactory);if(!mw.setSource)return acc.push(mw),setSourceHelper(src,mwrest,next,player,acc,lastRun);mw.setSource(Object.assign({},src),(function(err,_src){if(err)return setSourceHelper(src,mwrest,next,player,acc,lastRun);acc.push(mw),setSourceHelper(_src,src.type===_src.type?mwrest:middlewares[_src.type],next,player,acc,lastRun)}))}else mwrest.length?setSourceHelper(src,mwrest,next,player,acc,lastRun):lastRun?next(src,acc):setSourceHelper(src,middlewares["*"],next,player,acc,!0)}const MimetypesKind={opus:"video/ogg",ogv:"video/ogg",mp4:"video/mp4",mov:"video/mp4",m4v:"video/mp4",mkv:"video/x-matroska",m4a:"audio/mp4",mp3:"audio/mpeg",aac:"audio/aac",caf:"audio/x-caf",flac:"audio/flac",oga:"audio/ogg",wav:"audio/wav",m3u8:"application/x-mpegURL",mpd:"application/dash+xml",jpg:"image/jpeg",jpeg:"image/jpeg",gif:"image/gif",png:"image/png",svg:"image/svg+xml",webp:"image/webp"},getMimetype=function(){let src=arguments.length>0&&void 0!==arguments[0]?arguments[0]:"";const ext=getFileExtension(src),mimetype=MimetypesKind[ext.toLowerCase()];return mimetype||""},filterSource=function(src){if(Array.isArray(src)){let newsrc=[];src.forEach((function(srcobj){srcobj=filterSource(srcobj),Array.isArray(srcobj)?newsrc=newsrc.concat(srcobj):isObject$1(srcobj)&&newsrc.push(srcobj)})),src=newsrc}else src="string"==typeof src&&src.trim()?[fixSource({src:src})]:isObject$1(src)&&"string"==typeof src.src&&src.src&&src.src.trim()?[fixSource(src)]:[];return src};function fixSource(src){if(!src.type){const mimetype=getMimetype(src.src);mimetype&&(src.type=mimetype)}return src}Component$1.registerComponent("MediaLoader",class extends Component$1{constructor(player,options,ready){if(super(player,merge$2({createEl:!1},options),ready),options.playerOptions.sources&&0!==options.playerOptions.sources.length)player.src(options.playerOptions.sources);else for(let i=0,j=options.playerOptions.techOrder;i<j.length;i++){const techName=toTitleCase$1(j[i]);let tech=Tech.getTech(techName);if(techName||(tech=Component$1.getComponent(techName)),tech&&tech.isSupported()){player.loadTech_(techName);break}}}});class ClickableComponent extends Component$1{constructor(player,options){super(player,options),this.options_.controlText&&this.controlText(this.options_.controlText),this.handleMouseOver_=e=>this.handleMouseOver(e),this.handleMouseOut_=e=>this.handleMouseOut(e),this.handleClick_=e=>this.handleClick(e),this.handleKeyDown_=e=>this.handleKeyDown(e),this.emitTapEvents(),this.enable()}createEl(){let tag=arguments.length>0&&void 0!==arguments[0]?arguments[0]:"div",props=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},attributes=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};props=Object.assign({className:this.buildCSSClass(),tabIndex:0},props),"button"===tag&&log$1.error("Creating a ClickableComponent with an HTML element of ".concat(tag," is not supported; use a Button instead.")),attributes=Object.assign({role:"button"},attributes),this.tabIndex_=props.tabIndex;const el=createEl(tag,props,attributes);return this.player_.options_.experimentalSvgIcons||el.appendChild(createEl("span",{className:"vjs-icon-placeholder"},{"aria-hidden":!0})),this.createControlTextEl(el),el}dispose(){this.controlTextEl_=null,super.dispose()}createControlTextEl(el){return this.controlTextEl_=createEl("span",{className:"vjs-control-text"},{"aria-live":"polite"}),el&&el.appendChild(this.controlTextEl_),this.controlText(this.controlText_,el),this.controlTextEl_}controlText(text){let el=arguments.length>1&&void 0!==arguments[1]?arguments[1]:this.el();if(void 0===text)return this.controlText_||"Need Text";const localizedText=this.localize(text);this.controlText_=text,textContent(this.controlTextEl_,localizedText),this.nonIconControl||this.player_.options_.noUITitleAttributes||el.setAttribute("title",localizedText)}buildCSSClass(){return"vjs-control vjs-button ".concat(super.buildCSSClass())}enable(){this.enabled_||(this.enabled_=!0,this.removeClass("vjs-disabled"),this.el_.setAttribute("aria-disabled","false"),void 0!==this.tabIndex_&&this.el_.setAttribute("tabIndex",this.tabIndex_),this.on(["tap","click"],this.handleClick_),this.on("keydown",this.handleKeyDown_))}disable(){this.enabled_=!1,this.addClass("vjs-disabled"),this.el_.setAttribute("aria-disabled","true"),void 0!==this.tabIndex_&&this.el_.removeAttribute("tabIndex"),this.off("mouseover",this.handleMouseOver_),this.off("mouseout",this.handleMouseOut_),this.off(["tap","click"],this.handleClick_),this.off("keydown",this.handleKeyDown_)}handleLanguagechange(){this.controlText(this.controlText_)}handleClick(event){this.options_.clickHandler&&this.options_.clickHandler.call(this,arguments)}handleKeyDown(event){keycode.isEventKey(event,"Space")||keycode.isEventKey(event,"Enter")?(event.preventDefault(),event.stopPropagation(),this.trigger("click")):super.handleKeyDown(event)}}Component$1.registerComponent("ClickableComponent",ClickableComponent);class PosterImage extends ClickableComponent{constructor(player,options){super(player,options),this.update(),this.update_=e=>this.update(e),player.on("posterchange",this.update_)}dispose(){this.player().off("posterchange",this.update_),super.dispose()}createEl(){return createEl("div",{className:"vjs-poster"})}crossOrigin(value){if(void 0===value)return this.$("img")?this.$("img").crossOrigin:this.player_.tech_&&this.player_.tech_.isReady_?this.player_.crossOrigin():this.player_.options_.crossOrigin||this.player_.options_.crossorigin||null;null===value||"anonymous"===value||"use-credentials"===value?this.$("img")&&(this.$("img").crossOrigin=value):this.player_.log.warn('crossOrigin must be null,  "anonymous" or "use-credentials", given "'.concat(value,'"'))}update(event){const url=this.player().poster();this.setSrc(url),url?this.show():this.hide()}setSrc(url){url?(this.$("img")||this.el_.appendChild(createEl("picture",{className:"vjs-poster",tabIndex:-1},{},createEl("img",{loading:"lazy",crossOrigin:this.crossOrigin()},{alt:""}))),this.$("img").src=url):this.el_.textContent=""}handleClick(event){this.player_.controls()&&(this.player_.tech(!0)&&this.player_.tech(!0).focus(),this.player_.paused()?silencePromise(this.player_.play()):this.player_.pause())}}PosterImage.prototype.crossorigin=PosterImage.prototype.crossOrigin,Component$1.registerComponent("PosterImage",PosterImage);const fontMap={monospace:"monospace",sansSerif:"sans-serif",serif:"serif",monospaceSansSerif:'"Andale Mono", "Lucida Console", monospace',monospaceSerif:'"Courier New", monospace',proportionalSansSerif:"sans-serif",proportionalSerif:"serif",casual:'"Comic Sans MS", Impact, fantasy',script:'"Monotype Corsiva", cursive',smallcaps:'"Andale Mono", "Lucida Console", monospace, sans-serif'};function constructColor(color,opacity){let hex;if(4===color.length)hex=color[1]+color[1]+color[2]+color[2]+color[3]+color[3];else{if(7!==color.length)throw new Error("Invalid color code provided, "+color+"; must be formatted as e.g. #f0e or #f604e2.");hex=color.slice(1)}return"rgba("+parseInt(hex.slice(0,2),16)+","+parseInt(hex.slice(2,4),16)+","+parseInt(hex.slice(4,6),16)+","+opacity+")"}function tryUpdateStyle(el,style,rule){try{el.style[style]=rule}catch(e){return}}function getCSSPositionValue(position){return position?"".concat(position,"px"):""}Component$1.registerComponent("TextTrackDisplay",class extends Component$1{constructor(player,options,ready){super(player,options,ready);const updateDisplayHandler=e=>{this.updateDisplayOverlay(),this.updateDisplay(e)};player.on("loadstart",(e=>this.toggleDisplay(e))),player.on("texttrackchange",(e=>this.updateDisplay(e))),player.on("loadedmetadata",(e=>{this.updateDisplayOverlay(),this.preselectTrack(e)})),player.ready(bind_(this,(function(){if(player.tech_&&player.tech_.featuresNativeTextTracks)return void this.hide();player.on("fullscreenchange",updateDisplayHandler),player.on("playerresize",updateDisplayHandler);const screenOrientation=window.screen.orientation||window,changeOrientationEvent=window.screen.orientation?"change":"orientationchange";screenOrientation.addEventListener(changeOrientationEvent,updateDisplayHandler),player.on("dispose",(()=>screenOrientation.removeEventListener(changeOrientationEvent,updateDisplayHandler)));const tracks=this.options_.playerOptions.tracks||[];for(let i=0;i<tracks.length;i++)this.player_.addRemoteTextTrack(tracks[i],!0);this.preselectTrack()})))}preselectTrack(){const modes={captions:1,subtitles:1},trackList=this.player_.textTracks(),userPref=this.player_.cache_.selectedLanguage;let firstDesc,firstCaptions,preferredTrack;for(let i=0;i<trackList.length;i++){const track=trackList[i];userPref&&userPref.enabled&&userPref.language&&userPref.language===track.language&&track.kind in modes?track.kind===userPref.kind?preferredTrack=track:preferredTrack||(preferredTrack=track):userPref&&!userPref.enabled?(preferredTrack=null,firstDesc=null,firstCaptions=null):track.default&&("descriptions"!==track.kind||firstDesc?track.kind in modes&&!firstCaptions&&(firstCaptions=track):firstDesc=track)}preferredTrack?preferredTrack.mode="showing":firstCaptions?firstCaptions.mode="showing":firstDesc&&(firstDesc.mode="showing")}toggleDisplay(){this.player_.tech_&&this.player_.tech_.featuresNativeTextTracks?this.hide():this.show()}createEl(){return super.createEl("div",{className:"vjs-text-track-display"},{translate:"yes","aria-live":"off","aria-atomic":"true"})}clearDisplay(){"function"==typeof window.WebVTT&&window.WebVTT.processCues(window,[],this.el_)}updateDisplay(){const tracks=this.player_.textTracks(),allowMultipleShowingTracks=this.options_.allowMultipleShowingTracks;if(this.clearDisplay(),allowMultipleShowingTracks){const showingTracks=[];for(let i=0;i<tracks.length;++i){const track=tracks[i];"showing"===track.mode&&showingTracks.push(track)}return void this.updateForTrack(showingTracks)}let descriptionsTrack=null,captionsSubtitlesTrack=null,i=tracks.length;for(;i--;){const track=tracks[i];"showing"===track.mode&&("descriptions"===track.kind?descriptionsTrack=track:captionsSubtitlesTrack=track)}captionsSubtitlesTrack?("off"!==this.getAttribute("aria-live")&&this.setAttribute("aria-live","off"),this.updateForTrack(captionsSubtitlesTrack)):descriptionsTrack&&("assertive"!==this.getAttribute("aria-live")&&this.setAttribute("aria-live","assertive"),this.updateForTrack(descriptionsTrack))}updateDisplayOverlay(){if(!this.player_.videoHeight()||!window.CSS.supports("inset-inline: 10px"))return;const playerWidth=this.player_.currentWidth(),playerHeight=this.player_.currentHeight(),playerAspectRatio=playerWidth/playerHeight,videoAspectRatio=this.player_.videoWidth()/this.player_.videoHeight();let insetInlineMatch=0,insetBlockMatch=0;Math.abs(playerAspectRatio-videoAspectRatio)>.1&&(playerAspectRatio>videoAspectRatio?insetInlineMatch=Math.round((playerWidth-playerHeight*videoAspectRatio)/2):insetBlockMatch=Math.round((playerHeight-playerWidth/videoAspectRatio)/2)),tryUpdateStyle(this.el_,"insetInline",getCSSPositionValue(insetInlineMatch)),tryUpdateStyle(this.el_,"insetBlock",getCSSPositionValue(insetBlockMatch))}updateDisplayState(track){const overrides=this.player_.textTrackSettings.getValues(),cues=track.activeCues;let i=cues.length;for(;i--;){const cue=cues[i];if(!cue)continue;const cueDiv=cue.displayState;if(overrides.color&&(cueDiv.firstChild.style.color=overrides.color),overrides.textOpacity&&tryUpdateStyle(cueDiv.firstChild,"color",constructColor(overrides.color||"#fff",overrides.textOpacity)),overrides.backgroundColor&&(cueDiv.firstChild.style.backgroundColor=overrides.backgroundColor),overrides.backgroundOpacity&&tryUpdateStyle(cueDiv.firstChild,"backgroundColor",constructColor(overrides.backgroundColor||"#000",overrides.backgroundOpacity)),overrides.windowColor&&(overrides.windowOpacity?tryUpdateStyle(cueDiv,"backgroundColor",constructColor(overrides.windowColor,overrides.windowOpacity)):cueDiv.style.backgroundColor=overrides.windowColor),overrides.edgeStyle&&("dropshadow"===overrides.edgeStyle?cueDiv.firstChild.style.textShadow="2px 2px 3px ".concat("#222",", 2px 2px 4px ").concat("#222",", 2px 2px 5px ").concat("#222"):"raised"===overrides.edgeStyle?cueDiv.firstChild.style.textShadow="1px 1px ".concat("#222",", 2px 2px ").concat("#222",", 3px 3px ").concat("#222"):"depressed"===overrides.edgeStyle?cueDiv.firstChild.style.textShadow="1px 1px ".concat("#ccc",", 0 1px ").concat("#ccc",", -1px -1px ").concat("#222",", 0 -1px ").concat("#222"):"uniform"===overrides.edgeStyle&&(cueDiv.firstChild.style.textShadow="0 0 4px ".concat("#222",", 0 0 4px ").concat("#222",", 0 0 4px ").concat("#222",", 0 0 4px ").concat("#222"))),overrides.fontPercent&&1!==overrides.fontPercent){const fontSize=window.parseFloat(cueDiv.style.fontSize);cueDiv.style.fontSize=fontSize*overrides.fontPercent+"px",cueDiv.style.height="auto",cueDiv.style.top="auto"}overrides.fontFamily&&"default"!==overrides.fontFamily&&("small-caps"===overrides.fontFamily?cueDiv.firstChild.style.fontVariant="small-caps":cueDiv.firstChild.style.fontFamily=fontMap[overrides.fontFamily])}}updateForTrack(tracks){if(Array.isArray(tracks)||(tracks=[tracks]),"function"!=typeof window.WebVTT||tracks.every((track=>!track.activeCues)))return;const cues=[];for(let i=0;i<tracks.length;++i){const track=tracks[i];for(let j=0;j<track.activeCues.length;++j)cues.push(track.activeCues[j])}window.WebVTT.processCues(window,cues,this.el_);for(let i=0;i<tracks.length;++i){const track=tracks[i];for(let j=0;j<track.activeCues.length;++j){const cueEl=track.activeCues[j].displayState;addClass(cueEl,"vjs-text-track-cue","vjs-text-track-cue-"+(track.language?track.language:i)),track.language&&setAttribute(cueEl,"lang",track.language)}this.player_.textTrackSettings&&this.updateDisplayState(track)}}});Component$1.registerComponent("LoadingSpinner",class extends Component$1{createEl(){const isAudio=this.player_.isAudio(),playerType=this.localize(isAudio?"Audio Player":"Video Player"),controlText=createEl("span",{className:"vjs-control-text",textContent:this.localize("{1} is loading.",[playerType])}),el=super.createEl("div",{className:"vjs-loading-spinner",dir:"ltr"});return el.appendChild(controlText),el}handleLanguagechange(){this.$(".vjs-control-text").textContent=this.localize("{1} is loading.",[this.player_.isAudio()?"Audio Player":"Video Player"])}});class Button extends ClickableComponent{createEl(tag){let props=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},attributes=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};tag="button",props=Object.assign({className:this.buildCSSClass()},props),attributes=Object.assign({type:"button"},attributes);const el=createEl("button",props,attributes);return this.player_.options_.experimentalSvgIcons||el.appendChild(createEl("span",{className:"vjs-icon-placeholder"},{"aria-hidden":!0})),this.createControlTextEl(el),el}addChild(child){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};const className=this.constructor.name;return log$1.warn("Adding an actionable (user controllable) child to a Button (".concat(className,") is not supported; use a ClickableComponent instead.")),Component$1.prototype.addChild.call(this,child,options)}enable(){super.enable(),this.el_.removeAttribute("disabled")}disable(){super.disable(),this.el_.setAttribute("disabled","disabled")}handleKeyDown(event){keycode.isEventKey(event,"Space")||keycode.isEventKey(event,"Enter")?event.stopPropagation():super.handleKeyDown(event)}}Component$1.registerComponent("Button",Button);class BigPlayButton extends Button{constructor(player,options){super(player,options),this.mouseused_=!1,this.setIcon("play"),this.on("mousedown",(e=>this.handleMouseDown(e)))}buildCSSClass(){return"vjs-big-play-button"}handleClick(event){const playPromise=this.player_.play();if(this.mouseused_&&"clientX"in event&&"clientY"in event)return silencePromise(playPromise),void(this.player_.tech(!0)&&this.player_.tech(!0).focus());const cb=this.player_.getChild("controlBar"),playToggle=cb&&cb.getChild("playToggle");if(!playToggle)return void this.player_.tech(!0).focus();const playFocus=()=>playToggle.focus();isPromise(playPromise)?playPromise.then(playFocus,(()=>{})):this.setTimeout(playFocus,1)}handleKeyDown(event){this.mouseused_=!1,super.handleKeyDown(event)}handleMouseDown(event){this.mouseused_=!0}}BigPlayButton.prototype.controlText_="Play Video",Component$1.registerComponent("BigPlayButton",BigPlayButton);Component$1.registerComponent("CloseButton",class extends Button{constructor(player,options){super(player,options),this.setIcon("cancel"),this.controlText(options&&options.controlText||this.localize("Close"))}buildCSSClass(){return"vjs-close-button ".concat(super.buildCSSClass())}handleClick(event){this.trigger({type:"close",bubbles:!1})}handleKeyDown(event){keycode.isEventKey(event,"Esc")?(event.preventDefault(),event.stopPropagation(),this.trigger("click")):super.handleKeyDown(event)}});class PlayToggle extends Button{constructor(player){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};super(player,options),options.replay=void 0===options.replay||options.replay,this.setIcon("play"),this.on(player,"play",(e=>this.handlePlay(e))),this.on(player,"pause",(e=>this.handlePause(e))),options.replay&&this.on(player,"ended",(e=>this.handleEnded(e)))}buildCSSClass(){return"vjs-play-control ".concat(super.buildCSSClass())}handleClick(event){this.player_.paused()?silencePromise(this.player_.play()):this.player_.pause()}handleSeeked(event){this.removeClass("vjs-ended"),this.player_.paused()?this.handlePause(event):this.handlePlay(event)}handlePlay(event){this.removeClass("vjs-ended","vjs-paused"),this.addClass("vjs-playing"),this.setIcon("pause"),this.controlText("Pause")}handlePause(event){this.removeClass("vjs-playing"),this.addClass("vjs-paused"),this.setIcon("play"),this.controlText("Play")}handleEnded(event){this.removeClass("vjs-playing"),this.addClass("vjs-ended"),this.setIcon("replay"),this.controlText("Replay"),this.one(this.player_,"seeked",(e=>this.handleSeeked(e)))}}PlayToggle.prototype.controlText_="Play",Component$1.registerComponent("PlayToggle",PlayToggle);class TimeDisplay extends Component$1{constructor(player,options){super(player,options),this.on(player,["timeupdate","ended","seeking"],(e=>this.update(e))),this.updateTextNode_()}createEl(){const className=this.buildCSSClass(),el=super.createEl("div",{className:"".concat(className," vjs-time-control vjs-control")}),span=createEl("span",{className:"vjs-control-text",textContent:"".concat(this.localize(this.labelText_)," ")},{role:"presentation"});return el.appendChild(span),this.contentEl_=createEl("span",{className:"".concat(className,"-display")},{role:"presentation"}),el.appendChild(this.contentEl_),el}dispose(){this.contentEl_=null,this.textNode_=null,super.dispose()}update(event){(this.player_.options_.enableSmoothSeeking||"seeking"!==event.type)&&this.updateContent(event)}updateTextNode_(){let time=arguments.length>0&&void 0!==arguments[0]?arguments[0]:0;time=formatTime(time),this.formattedTime_!==time&&(this.formattedTime_=time,this.requestNamedAnimationFrame("TimeDisplay#updateTextNode_",(()=>{if(!this.contentEl_)return;let oldNode=this.textNode_;oldNode&&this.contentEl_.firstChild!==oldNode&&(oldNode=null,log$1.warn("TimeDisplay#updateTextnode_: Prevented replacement of text node element since it was no longer a child of this node. Appending a new node instead.")),this.textNode_=document.createTextNode(this.formattedTime_),this.textNode_&&(oldNode?this.contentEl_.replaceChild(this.textNode_,oldNode):this.contentEl_.appendChild(this.textNode_))})))}updateContent(event){}}TimeDisplay.prototype.labelText_="Time",TimeDisplay.prototype.controlText_="Time",Component$1.registerComponent("TimeDisplay",TimeDisplay);class CurrentTimeDisplay extends TimeDisplay{buildCSSClass(){return"vjs-current-time"}updateContent(event){let time;time=this.player_.ended()?this.player_.duration():this.player_.scrubbing()?this.player_.getCache().currentTime:this.player_.currentTime(),this.updateTextNode_(time)}}CurrentTimeDisplay.prototype.labelText_="Current Time",CurrentTimeDisplay.prototype.controlText_="Current Time",Component$1.registerComponent("CurrentTimeDisplay",CurrentTimeDisplay);class DurationDisplay extends TimeDisplay{constructor(player,options){super(player,options);const updateContent=e=>this.updateContent(e);this.on(player,"durationchange",updateContent),this.on(player,"loadstart",updateContent),this.on(player,"loadedmetadata",updateContent)}buildCSSClass(){return"vjs-duration"}updateContent(event){const duration=this.player_.duration();this.updateTextNode_(duration)}}DurationDisplay.prototype.labelText_="Duration",DurationDisplay.prototype.controlText_="Duration",Component$1.registerComponent("DurationDisplay",DurationDisplay);Component$1.registerComponent("TimeDivider",class extends Component$1{createEl(){const el=super.createEl("div",{className:"vjs-time-control vjs-time-divider"},{"aria-hidden":!0}),div=super.createEl("div"),span=super.createEl("span",{textContent:"/"});return div.appendChild(span),el.appendChild(div),el}});class RemainingTimeDisplay extends TimeDisplay{constructor(player,options){super(player,options),this.on(player,"durationchange",(e=>this.updateContent(e)))}buildCSSClass(){return"vjs-remaining-time"}createEl(){const el=super.createEl();return!1!==this.options_.displayNegative&&el.insertBefore(createEl("span",{},{"aria-hidden":!0},"-"),this.contentEl_),el}updateContent(event){if("number"!=typeof this.player_.duration())return;let time;time=this.player_.ended()?0:this.player_.remainingTimeDisplay?this.player_.remainingTimeDisplay():this.player_.remainingTime(),this.updateTextNode_(time)}}RemainingTimeDisplay.prototype.labelText_="Remaining Time",RemainingTimeDisplay.prototype.controlText_="Remaining Time",Component$1.registerComponent("RemainingTimeDisplay",RemainingTimeDisplay);Component$1.registerComponent("LiveDisplay",class extends Component$1{constructor(player,options){super(player,options),this.updateShowing(),this.on(this.player(),"durationchange",(e=>this.updateShowing(e)))}createEl(){const el=super.createEl("div",{className:"vjs-live-control vjs-control"});return this.contentEl_=createEl("div",{className:"vjs-live-display"},{"aria-live":"off"}),this.contentEl_.appendChild(createEl("span",{className:"vjs-control-text",textContent:"".concat(this.localize("Stream Type")," ")})),this.contentEl_.appendChild(document.createTextNode(this.localize("LIVE"))),el.appendChild(this.contentEl_),el}dispose(){this.contentEl_=null,super.dispose()}updateShowing(event){this.player().duration()===1/0?this.show():this.hide()}});class SeekToLive extends Button{constructor(player,options){super(player,options),this.updateLiveEdgeStatus(),this.player_.liveTracker&&(this.updateLiveEdgeStatusHandler_=e=>this.updateLiveEdgeStatus(e),this.on(this.player_.liveTracker,"liveedgechange",this.updateLiveEdgeStatusHandler_))}createEl(){const el=super.createEl("button",{className:"vjs-seek-to-live-control vjs-control"});return this.setIcon("circle",el),this.textEl_=createEl("span",{className:"vjs-seek-to-live-text",textContent:this.localize("LIVE")},{"aria-hidden":"true"}),el.appendChild(this.textEl_),el}updateLiveEdgeStatus(){!this.player_.liveTracker||this.player_.liveTracker.atLiveEdge()?(this.setAttribute("aria-disabled",!0),this.addClass("vjs-at-live-edge"),this.controlText("Seek to live, currently playing live")):(this.setAttribute("aria-disabled",!1),this.removeClass("vjs-at-live-edge"),this.controlText("Seek to live, currently behind live"))}handleClick(){this.player_.liveTracker.seekToLiveEdge()}dispose(){this.player_.liveTracker&&this.off(this.player_.liveTracker,"liveedgechange",this.updateLiveEdgeStatusHandler_),this.textEl_=null,super.dispose()}}function clamp(number,min,max){return number=Number(number),Math.min(max,Math.max(min,isNaN(number)?min:number))}SeekToLive.prototype.controlText_="Seek to live, currently playing live",Component$1.registerComponent("SeekToLive",SeekToLive);var Num=Object.freeze({__proto__:null,clamp:clamp});class Slider extends Component$1{constructor(player,options){super(player,options),this.handleMouseDown_=e=>this.handleMouseDown(e),this.handleMouseUp_=e=>this.handleMouseUp(e),this.handleKeyDown_=e=>this.handleKeyDown(e),this.handleClick_=e=>this.handleClick(e),this.handleMouseMove_=e=>this.handleMouseMove(e),this.update_=e=>this.update(e),this.bar=this.getChild(this.options_.barName),this.vertical(!!this.options_.vertical),this.enable()}enabled(){return this.enabled_}enable(){this.enabled()||(this.on("mousedown",this.handleMouseDown_),this.on("touchstart",this.handleMouseDown_),this.on("keydown",this.handleKeyDown_),this.on("click",this.handleClick_),this.on(this.player_,"controlsvisible",this.update),this.playerEvent&&this.on(this.player_,this.playerEvent,this.update),this.removeClass("disabled"),this.setAttribute("tabindex",0),this.enabled_=!0)}disable(){if(!this.enabled())return;const doc=this.bar.el_.ownerDocument;this.off("mousedown",this.handleMouseDown_),this.off("touchstart",this.handleMouseDown_),this.off("keydown",this.handleKeyDown_),this.off("click",this.handleClick_),this.off(this.player_,"controlsvisible",this.update_),this.off(doc,"mousemove",this.handleMouseMove_),this.off(doc,"mouseup",this.handleMouseUp_),this.off(doc,"touchmove",this.handleMouseMove_),this.off(doc,"touchend",this.handleMouseUp_),this.removeAttribute("tabindex"),this.addClass("disabled"),this.playerEvent&&this.off(this.player_,this.playerEvent,this.update),this.enabled_=!1}createEl(type){let props=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},attributes=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};return props.className=props.className+" vjs-slider",props=Object.assign({tabIndex:0},props),attributes=Object.assign({role:"slider","aria-valuenow":0,"aria-valuemin":0,"aria-valuemax":100},attributes),super.createEl(type,props,attributes)}handleMouseDown(event){const doc=this.bar.el_.ownerDocument;"mousedown"===event.type&&event.preventDefault(),"touchstart"!==event.type||IS_CHROME||event.preventDefault(),blockTextSelection(),this.addClass("vjs-sliding"),this.trigger("slideractive"),this.on(doc,"mousemove",this.handleMouseMove_),this.on(doc,"mouseup",this.handleMouseUp_),this.on(doc,"touchmove",this.handleMouseMove_),this.on(doc,"touchend",this.handleMouseUp_),this.handleMouseMove(event,!0)}handleMouseMove(event){}handleMouseUp(event){const doc=this.bar.el_.ownerDocument;unblockTextSelection(),this.removeClass("vjs-sliding"),this.trigger("sliderinactive"),this.off(doc,"mousemove",this.handleMouseMove_),this.off(doc,"mouseup",this.handleMouseUp_),this.off(doc,"touchmove",this.handleMouseMove_),this.off(doc,"touchend",this.handleMouseUp_),this.update()}update(){if(!this.el_||!this.bar)return;const progress=this.getProgress();return progress===this.progress_||(this.progress_=progress,this.requestNamedAnimationFrame("Slider#update",(()=>{const sizeKey=this.vertical()?"height":"width";this.bar.el().style[sizeKey]=(100*progress).toFixed(2)+"%"}))),progress}getProgress(){return Number(clamp(this.getPercent(),0,1).toFixed(4))}calculateDistance(event){const position=getPointerPosition(this.el_,event);return this.vertical()?position.y:position.x}handleKeyDown(event){keycode.isEventKey(event,"Left")||keycode.isEventKey(event,"Down")?(event.preventDefault(),event.stopPropagation(),this.stepBack()):keycode.isEventKey(event,"Right")||keycode.isEventKey(event,"Up")?(event.preventDefault(),event.stopPropagation(),this.stepForward()):super.handleKeyDown(event)}handleClick(event){event.stopPropagation(),event.preventDefault()}vertical(bool){if(void 0===bool)return this.vertical_||!1;this.vertical_=!!bool,this.vertical_?this.addClass("vjs-slider-vertical"):this.addClass("vjs-slider-horizontal")}}Component$1.registerComponent("Slider",Slider);const percentify=(time,end)=>clamp(time/end*100,0,100).toFixed(2)+"%";Component$1.registerComponent("LoadProgressBar",class extends Component$1{constructor(player,options){super(player,options),this.partEls_=[],this.on(player,"progress",(e=>this.update(e)))}createEl(){const el=super.createEl("div",{className:"vjs-load-progress"}),wrapper=createEl("span",{className:"vjs-control-text"}),loadedText=createEl("span",{textContent:this.localize("Loaded")}),separator=document.createTextNode(": ");return this.percentageEl_=createEl("span",{className:"vjs-control-text-loaded-percentage",textContent:"0%"}),el.appendChild(wrapper),wrapper.appendChild(loadedText),wrapper.appendChild(separator),wrapper.appendChild(this.percentageEl_),el}dispose(){this.partEls_=null,this.percentageEl_=null,super.dispose()}update(event){this.requestNamedAnimationFrame("LoadProgressBar#update",(()=>{const liveTracker=this.player_.liveTracker,buffered=this.player_.buffered(),duration=liveTracker&&liveTracker.isLive()?liveTracker.seekableEnd():this.player_.duration(),bufferedEnd=this.player_.bufferedEnd(),children=this.partEls_,percent=percentify(bufferedEnd,duration);this.percent_!==percent&&(this.el_.style.width=percent,textContent(this.percentageEl_,percent),this.percent_=percent);for(let i=0;i<buffered.length;i++){const start=buffered.start(i),end=buffered.end(i);let part=children[i];part||(part=this.el_.appendChild(createEl()),children[i]=part),part.dataset.start===start&&part.dataset.end===end||(part.dataset.start=start,part.dataset.end=end,part.style.left=percentify(start,bufferedEnd),part.style.width=percentify(end-start,bufferedEnd))}for(let i=children.length;i>buffered.length;i--)this.el_.removeChild(children[i-1]);children.length=buffered.length}))}});Component$1.registerComponent("TimeTooltip",class extends Component$1{constructor(player,options){super(player,options),this.update=throttle(bind_(this,this.update),30)}createEl(){return super.createEl("div",{className:"vjs-time-tooltip"},{"aria-hidden":"true"})}update(seekBarRect,seekBarPoint,content){const tooltipRect=findPosition(this.el_),playerRect=getBoundingClientRect(this.player_.el()),seekBarPointPx=seekBarRect.width*seekBarPoint;if(!playerRect||!tooltipRect)return;const spaceLeftOfPoint=seekBarRect.left-playerRect.left+seekBarPointPx,spaceRightOfPoint=seekBarRect.width-seekBarPointPx+(playerRect.right-seekBarRect.right);let pullTooltipBy=tooltipRect.width/2;spaceLeftOfPoint<pullTooltipBy?pullTooltipBy+=pullTooltipBy-spaceLeftOfPoint:spaceRightOfPoint<pullTooltipBy&&(pullTooltipBy=spaceRightOfPoint),pullTooltipBy<0?pullTooltipBy=0:pullTooltipBy>tooltipRect.width&&(pullTooltipBy=tooltipRect.width),pullTooltipBy=Math.round(pullTooltipBy),this.el_.style.right="-".concat(pullTooltipBy,"px"),this.write(content)}write(content){textContent(this.el_,content)}updateTime(seekBarRect,seekBarPoint,time,cb){this.requestNamedAnimationFrame("TimeTooltip#updateTime",(()=>{let content;const duration=this.player_.duration();if(this.player_.liveTracker&&this.player_.liveTracker.isLive()){const liveWindow=this.player_.liveTracker.liveWindow(),secondsBehind=liveWindow-seekBarPoint*liveWindow;content=(secondsBehind<1?"":"-")+formatTime(secondsBehind,liveWindow)}else content=formatTime(time,duration);this.update(seekBarRect,seekBarPoint,content),cb&&cb()}))}});class PlayProgressBar extends Component$1{constructor(player,options){super(player,options),this.setIcon("circle"),this.update=throttle(bind_(this,this.update),30)}createEl(){return super.createEl("div",{className:"vjs-play-progress vjs-slider-bar"},{"aria-hidden":"true"})}update(seekBarRect,seekBarPoint){const timeTooltip=this.getChild("timeTooltip");if(!timeTooltip)return;const time=this.player_.scrubbing()?this.player_.getCache().currentTime:this.player_.currentTime();timeTooltip.updateTime(seekBarRect,seekBarPoint,time)}}PlayProgressBar.prototype.options_={children:[]},IS_IOS||IS_ANDROID||PlayProgressBar.prototype.options_.children.push("timeTooltip"),Component$1.registerComponent("PlayProgressBar",PlayProgressBar);class MouseTimeDisplay extends Component$1{constructor(player,options){super(player,options),this.update=throttle(bind_(this,this.update),30)}createEl(){return super.createEl("div",{className:"vjs-mouse-display"})}update(seekBarRect,seekBarPoint){const time=seekBarPoint*this.player_.duration();this.getChild("timeTooltip").updateTime(seekBarRect,seekBarPoint,time,(()=>{this.el_.style.left="".concat(seekBarRect.width*seekBarPoint,"px")}))}}MouseTimeDisplay.prototype.options_={children:["timeTooltip"]},Component$1.registerComponent("MouseTimeDisplay",MouseTimeDisplay);class SeekBar extends Slider{constructor(player,options){super(player,options),this.setEventHandlers_()}setEventHandlers_(){this.update_=bind_(this,this.update),this.update=throttle(this.update_,30),this.on(this.player_,["ended","durationchange","timeupdate"],this.update),this.player_.liveTracker&&this.on(this.player_.liveTracker,"liveedgechange",this.update),this.updateInterval=null,this.enableIntervalHandler_=e=>this.enableInterval_(e),this.disableIntervalHandler_=e=>this.disableInterval_(e),this.on(this.player_,["playing"],this.enableIntervalHandler_),this.on(this.player_,["ended","pause","waiting"],this.disableIntervalHandler_),"hidden"in document&&"visibilityState"in document&&this.on(document,"visibilitychange",this.toggleVisibility_)}toggleVisibility_(e){"hidden"===document.visibilityState?(this.cancelNamedAnimationFrame("SeekBar#update"),this.cancelNamedAnimationFrame("Slider#update"),this.disableInterval_(e)):(this.player_.ended()||this.player_.paused()||this.enableInterval_(),this.update())}enableInterval_(){this.updateInterval||(this.updateInterval=this.setInterval(this.update,30))}disableInterval_(e){this.player_.liveTracker&&this.player_.liveTracker.isLive()&&e&&"ended"!==e.type||this.updateInterval&&(this.clearInterval(this.updateInterval),this.updateInterval=null)}createEl(){return super.createEl("div",{className:"vjs-progress-holder"},{"aria-label":this.localize("Progress Bar")})}update(event){if("hidden"===document.visibilityState)return;const percent=super.update();return this.requestNamedAnimationFrame("SeekBar#update",(()=>{const currentTime=this.player_.ended()?this.player_.duration():this.getCurrentTime_(),liveTracker=this.player_.liveTracker;let duration=this.player_.duration();liveTracker&&liveTracker.isLive()&&(duration=this.player_.liveTracker.liveCurrentTime()),this.percent_!==percent&&(this.el_.setAttribute("aria-valuenow",(100*percent).toFixed(2)),this.percent_=percent),this.currentTime_===currentTime&&this.duration_===duration||(this.el_.setAttribute("aria-valuetext",this.localize("progress bar timing: currentTime={1} duration={2}",[formatTime(currentTime,duration),formatTime(duration,duration)],"{1} of {2}")),this.currentTime_=currentTime,this.duration_=duration),this.bar&&this.bar.update(getBoundingClientRect(this.el()),this.getProgress())})),percent}userSeek_(ct){this.player_.liveTracker&&this.player_.liveTracker.isLive()&&this.player_.liveTracker.nextSeekedFromUser(),this.player_.currentTime(ct)}getCurrentTime_(){return this.player_.scrubbing()?this.player_.getCache().currentTime:this.player_.currentTime()}getPercent(){const currentTime=this.getCurrentTime_();let percent;const liveTracker=this.player_.liveTracker;return liveTracker&&liveTracker.isLive()?(percent=(currentTime-liveTracker.seekableStart())/liveTracker.liveWindow(),liveTracker.atLiveEdge()&&(percent=1)):percent=currentTime/this.player_.duration(),percent}handleMouseDown(event){isSingleLeftClick(event)&&(event.stopPropagation(),this.videoWasPlaying=!this.player_.paused(),this.player_.pause(),super.handleMouseDown(event))}handleMouseMove(event){let newTime,mouseDown=arguments.length>1&&void 0!==arguments[1]&&arguments[1];if(!isSingleLeftClick(event)||isNaN(this.player_.duration()))return;mouseDown||this.player_.scrubbing()||this.player_.scrubbing(!0);const distance=this.calculateDistance(event),liveTracker=this.player_.liveTracker;if(liveTracker&&liveTracker.isLive()){if(distance>=.99)return void liveTracker.seekToLiveEdge();const seekableStart=liveTracker.seekableStart(),seekableEnd=liveTracker.liveCurrentTime();if(newTime=seekableStart+distance*liveTracker.liveWindow(),newTime>=seekableEnd&&(newTime=seekableEnd),newTime<=seekableStart&&(newTime=seekableStart+.1),newTime===1/0)return}else newTime=distance*this.player_.duration(),newTime===this.player_.duration()&&(newTime-=.1);this.userSeek_(newTime),this.player_.options_.enableSmoothSeeking&&this.update()}enable(){super.enable();const mouseTimeDisplay=this.getChild("mouseTimeDisplay");mouseTimeDisplay&&mouseTimeDisplay.show()}disable(){super.disable();const mouseTimeDisplay=this.getChild("mouseTimeDisplay");mouseTimeDisplay&&mouseTimeDisplay.hide()}handleMouseUp(event){super.handleMouseUp(event),event&&event.stopPropagation(),this.player_.scrubbing(!1),this.player_.trigger({type:"timeupdate",target:this,manuallyTriggered:!0}),this.videoWasPlaying?silencePromise(this.player_.play()):this.update_()}stepForward(){this.userSeek_(this.player_.currentTime()+5)}stepBack(){this.userSeek_(this.player_.currentTime()-5)}handleAction(event){this.player_.paused()?this.player_.play():this.player_.pause()}handleKeyDown(event){const liveTracker=this.player_.liveTracker;if(keycode.isEventKey(event,"Space")||keycode.isEventKey(event,"Enter"))event.preventDefault(),event.stopPropagation(),this.handleAction(event);else if(keycode.isEventKey(event,"Home"))event.preventDefault(),event.stopPropagation(),this.userSeek_(0);else if(keycode.isEventKey(event,"End"))event.preventDefault(),event.stopPropagation(),liveTracker&&liveTracker.isLive()?this.userSeek_(liveTracker.liveCurrentTime()):this.userSeek_(this.player_.duration());else if(/^[0-9]$/.test(keycode(event))){event.preventDefault(),event.stopPropagation();const gotoFraction=10*(keycode.codes[keycode(event)]-keycode.codes[0])/100;liveTracker&&liveTracker.isLive()?this.userSeek_(liveTracker.seekableStart()+liveTracker.liveWindow()*gotoFraction):this.userSeek_(this.player_.duration()*gotoFraction)}else keycode.isEventKey(event,"PgDn")?(event.preventDefault(),event.stopPropagation(),this.userSeek_(this.player_.currentTime()-60)):keycode.isEventKey(event,"PgUp")?(event.preventDefault(),event.stopPropagation(),this.userSeek_(this.player_.currentTime()+60)):super.handleKeyDown(event)}dispose(){this.disableInterval_(),this.off(this.player_,["ended","durationchange","timeupdate"],this.update),this.player_.liveTracker&&this.off(this.player_.liveTracker,"liveedgechange",this.update),this.off(this.player_,["playing"],this.enableIntervalHandler_),this.off(this.player_,["ended","pause","waiting"],this.disableIntervalHandler_),"hidden"in document&&"visibilityState"in document&&this.off(document,"visibilitychange",this.toggleVisibility_),super.dispose()}}SeekBar.prototype.options_={children:["loadProgressBar","playProgressBar"],barName:"playProgressBar"},IS_IOS||IS_ANDROID||SeekBar.prototype.options_.children.splice(1,0,"mouseTimeDisplay"),Component$1.registerComponent("SeekBar",SeekBar);class ProgressControl extends Component$1{constructor(player,options){super(player,options),this.handleMouseMove=throttle(bind_(this,this.handleMouseMove),30),this.throttledHandleMouseSeek=throttle(bind_(this,this.handleMouseSeek),30),this.handleMouseUpHandler_=e=>this.handleMouseUp(e),this.handleMouseDownHandler_=e=>this.handleMouseDown(e),this.enable()}createEl(){return super.createEl("div",{className:"vjs-progress-control vjs-control"})}handleMouseMove(event){const seekBar=this.getChild("seekBar");if(!seekBar)return;const playProgressBar=seekBar.getChild("playProgressBar"),mouseTimeDisplay=seekBar.getChild("mouseTimeDisplay");if(!playProgressBar&&!mouseTimeDisplay)return;const seekBarEl=seekBar.el(),seekBarRect=findPosition(seekBarEl);let seekBarPoint=getPointerPosition(seekBarEl,event).x;seekBarPoint=clamp(seekBarPoint,0,1),mouseTimeDisplay&&mouseTimeDisplay.update(seekBarRect,seekBarPoint),playProgressBar&&playProgressBar.update(seekBarRect,seekBar.getProgress())}handleMouseSeek(event){const seekBar=this.getChild("seekBar");seekBar&&seekBar.handleMouseMove(event)}enabled(){return this.enabled_}disable(){if(this.children().forEach((child=>child.disable&&child.disable())),this.enabled()&&(this.off(["mousedown","touchstart"],this.handleMouseDownHandler_),this.off(this.el_,"mousemove",this.handleMouseMove),this.removeListenersAddedOnMousedownAndTouchstart(),this.addClass("disabled"),this.enabled_=!1,this.player_.scrubbing())){const seekBar=this.getChild("seekBar");this.player_.scrubbing(!1),seekBar.videoWasPlaying&&silencePromise(this.player_.play())}}enable(){this.children().forEach((child=>child.enable&&child.enable())),this.enabled()||(this.on(["mousedown","touchstart"],this.handleMouseDownHandler_),this.on(this.el_,"mousemove",this.handleMouseMove),this.removeClass("disabled"),this.enabled_=!0)}removeListenersAddedOnMousedownAndTouchstart(){const doc=this.el_.ownerDocument;this.off(doc,"mousemove",this.throttledHandleMouseSeek),this.off(doc,"touchmove",this.throttledHandleMouseSeek),this.off(doc,"mouseup",this.handleMouseUpHandler_),this.off(doc,"touchend",this.handleMouseUpHandler_)}handleMouseDown(event){const doc=this.el_.ownerDocument,seekBar=this.getChild("seekBar");seekBar&&seekBar.handleMouseDown(event),this.on(doc,"mousemove",this.throttledHandleMouseSeek),this.on(doc,"touchmove",this.throttledHandleMouseSeek),this.on(doc,"mouseup",this.handleMouseUpHandler_),this.on(doc,"touchend",this.handleMouseUpHandler_)}handleMouseUp(event){const seekBar=this.getChild("seekBar");seekBar&&seekBar.handleMouseUp(event),this.removeListenersAddedOnMousedownAndTouchstart()}}ProgressControl.prototype.options_={children:["seekBar"]},Component$1.registerComponent("ProgressControl",ProgressControl);class PictureInPictureToggle extends Button{constructor(player,options){super(player,options),this.setIcon("picture-in-picture-enter"),this.on(player,["enterpictureinpicture","leavepictureinpicture"],(e=>this.handlePictureInPictureChange(e))),this.on(player,["disablepictureinpicturechanged","loadedmetadata"],(e=>this.handlePictureInPictureEnabledChange(e))),this.on(player,["loadedmetadata","audioonlymodechange","audiopostermodechange"],(()=>this.handlePictureInPictureAudioModeChange())),this.disable()}buildCSSClass(){return"vjs-picture-in-picture-control vjs-hidden ".concat(super.buildCSSClass())}handlePictureInPictureAudioModeChange(){"audio"===this.player_.currentType().substring(0,5)||this.player_.audioPosterMode()||this.player_.audioOnlyMode()?(this.player_.isInPictureInPicture()&&this.player_.exitPictureInPicture(),this.hide()):this.show()}handlePictureInPictureEnabledChange(){document.pictureInPictureEnabled&&!1===this.player_.disablePictureInPicture()||this.player_.options_.enableDocumentPictureInPicture&&"documentPictureInPicture"in window?this.enable():this.disable()}handlePictureInPictureChange(event){this.player_.isInPictureInPicture()?(this.setIcon("picture-in-picture-exit"),this.controlText("Exit Picture-in-Picture")):(this.setIcon("picture-in-picture-enter"),this.controlText("Picture-in-Picture")),this.handlePictureInPictureEnabledChange()}handleClick(event){this.player_.isInPictureInPicture()?this.player_.exitPictureInPicture():this.player_.requestPictureInPicture()}show(){"function"==typeof document.exitPictureInPicture&&super.show()}}PictureInPictureToggle.prototype.controlText_="Picture-in-Picture",Component$1.registerComponent("PictureInPictureToggle",PictureInPictureToggle);class FullscreenToggle extends Button{constructor(player,options){super(player,options),this.setIcon("fullscreen-enter"),this.on(player,"fullscreenchange",(e=>this.handleFullscreenChange(e))),!1===document[player.fsApi_.fullscreenEnabled]&&this.disable()}buildCSSClass(){return"vjs-fullscreen-control ".concat(super.buildCSSClass())}handleFullscreenChange(event){this.player_.isFullscreen()?(this.controlText("Exit Fullscreen"),this.setIcon("fullscreen-exit")):(this.controlText("Fullscreen"),this.setIcon("fullscreen-enter"))}handleClick(event){this.player_.isFullscreen()?this.player_.exitFullscreen():this.player_.requestFullscreen()}}FullscreenToggle.prototype.controlText_="Fullscreen",Component$1.registerComponent("FullscreenToggle",FullscreenToggle);Component$1.registerComponent("VolumeLevel",class extends Component$1{createEl(){const el=super.createEl("div",{className:"vjs-volume-level"});return this.setIcon("circle",el),el.appendChild(super.createEl("span",{className:"vjs-control-text"})),el}});Component$1.registerComponent("VolumeLevelTooltip",class extends Component$1{constructor(player,options){super(player,options),this.update=throttle(bind_(this,this.update),30)}createEl(){return super.createEl("div",{className:"vjs-volume-tooltip"},{"aria-hidden":"true"})}update(rangeBarRect,rangeBarPoint,vertical,content){if(!vertical){const tooltipRect=getBoundingClientRect(this.el_),playerRect=getBoundingClientRect(this.player_.el()),volumeBarPointPx=rangeBarRect.width*rangeBarPoint;if(!playerRect||!tooltipRect)return;const spaceLeftOfPoint=rangeBarRect.left-playerRect.left+volumeBarPointPx,spaceRightOfPoint=rangeBarRect.width-volumeBarPointPx+(playerRect.right-rangeBarRect.right);let pullTooltipBy=tooltipRect.width/2;spaceLeftOfPoint<pullTooltipBy?pullTooltipBy+=pullTooltipBy-spaceLeftOfPoint:spaceRightOfPoint<pullTooltipBy&&(pullTooltipBy=spaceRightOfPoint),pullTooltipBy<0?pullTooltipBy=0:pullTooltipBy>tooltipRect.width&&(pullTooltipBy=tooltipRect.width),this.el_.style.right="-".concat(pullTooltipBy,"px")}this.write("".concat(content,"%"))}write(content){textContent(this.el_,content)}updateVolume(rangeBarRect,rangeBarPoint,vertical,volume,cb){this.requestNamedAnimationFrame("VolumeLevelTooltip#updateVolume",(()=>{this.update(rangeBarRect,rangeBarPoint,vertical,volume.toFixed(0)),cb&&cb()}))}});class MouseVolumeLevelDisplay extends Component$1{constructor(player,options){super(player,options),this.update=throttle(bind_(this,this.update),30)}createEl(){return super.createEl("div",{className:"vjs-mouse-display"})}update(rangeBarRect,rangeBarPoint,vertical){const volume=100*rangeBarPoint;this.getChild("volumeLevelTooltip").updateVolume(rangeBarRect,rangeBarPoint,vertical,volume,(()=>{vertical?this.el_.style.bottom="".concat(rangeBarRect.height*rangeBarPoint,"px"):this.el_.style.left="".concat(rangeBarRect.width*rangeBarPoint,"px")}))}}MouseVolumeLevelDisplay.prototype.options_={children:["volumeLevelTooltip"]},Component$1.registerComponent("MouseVolumeLevelDisplay",MouseVolumeLevelDisplay);class VolumeBar extends Slider{constructor(player,options){super(player,options),this.on("slideractive",(e=>this.updateLastVolume_(e))),this.on(player,"volumechange",(e=>this.updateARIAAttributes(e))),player.ready((()=>this.updateARIAAttributes()))}createEl(){return super.createEl("div",{className:"vjs-volume-bar vjs-slider-bar"},{"aria-label":this.localize("Volume Level"),"aria-live":"polite"})}handleMouseDown(event){isSingleLeftClick(event)&&super.handleMouseDown(event)}handleMouseMove(event){const mouseVolumeLevelDisplay=this.getChild("mouseVolumeLevelDisplay");if(mouseVolumeLevelDisplay){const volumeBarEl=this.el(),volumeBarRect=getBoundingClientRect(volumeBarEl),vertical=this.vertical();let volumeBarPoint=getPointerPosition(volumeBarEl,event);volumeBarPoint=vertical?volumeBarPoint.y:volumeBarPoint.x,volumeBarPoint=clamp(volumeBarPoint,0,1),mouseVolumeLevelDisplay.update(volumeBarRect,volumeBarPoint,vertical)}isSingleLeftClick(event)&&(this.checkMuted(),this.player_.volume(this.calculateDistance(event)))}checkMuted(){this.player_.muted()&&this.player_.muted(!1)}getPercent(){return this.player_.muted()?0:this.player_.volume()}stepForward(){this.checkMuted(),this.player_.volume(this.player_.volume()+.1)}stepBack(){this.checkMuted(),this.player_.volume(this.player_.volume()-.1)}updateARIAAttributes(event){const ariaValue=this.player_.muted()?0:this.volumeAsPercentage_();this.el_.setAttribute("aria-valuenow",ariaValue),this.el_.setAttribute("aria-valuetext",ariaValue+"%")}volumeAsPercentage_(){return Math.round(100*this.player_.volume())}updateLastVolume_(){const volumeBeforeDrag=this.player_.volume();this.one("sliderinactive",(()=>{0===this.player_.volume()&&this.player_.lastVolume_(volumeBeforeDrag)}))}}VolumeBar.prototype.options_={children:["volumeLevel"],barName:"volumeLevel"},IS_IOS||IS_ANDROID||VolumeBar.prototype.options_.children.splice(0,0,"mouseVolumeLevelDisplay"),VolumeBar.prototype.playerEvent="volumechange",Component$1.registerComponent("VolumeBar",VolumeBar);class VolumeControl extends Component$1{constructor(player){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};options.vertical=options.vertical||!1,(void 0===options.volumeBar||isPlain(options.volumeBar))&&(options.volumeBar=options.volumeBar||{},options.volumeBar.vertical=options.vertical),super(player,options),function(self,player){player.tech_&&!player.tech_.featuresVolumeControl&&self.addClass("vjs-hidden"),self.on(player,"loadstart",(function(){player.tech_.featuresVolumeControl?self.removeClass("vjs-hidden"):self.addClass("vjs-hidden")}))}(this,player),this.throttledHandleMouseMove=throttle(bind_(this,this.handleMouseMove),30),this.handleMouseUpHandler_=e=>this.handleMouseUp(e),this.on("mousedown",(e=>this.handleMouseDown(e))),this.on("touchstart",(e=>this.handleMouseDown(e))),this.on("mousemove",(e=>this.handleMouseMove(e))),this.on(this.volumeBar,["focus","slideractive"],(()=>{this.volumeBar.addClass("vjs-slider-active"),this.addClass("vjs-slider-active"),this.trigger("slideractive")})),this.on(this.volumeBar,["blur","sliderinactive"],(()=>{this.volumeBar.removeClass("vjs-slider-active"),this.removeClass("vjs-slider-active"),this.trigger("sliderinactive")}))}createEl(){let orientationClass="vjs-volume-horizontal";return this.options_.vertical&&(orientationClass="vjs-volume-vertical"),super.createEl("div",{className:"vjs-volume-control vjs-control ".concat(orientationClass)})}handleMouseDown(event){const doc=this.el_.ownerDocument;this.on(doc,"mousemove",this.throttledHandleMouseMove),this.on(doc,"touchmove",this.throttledHandleMouseMove),this.on(doc,"mouseup",this.handleMouseUpHandler_),this.on(doc,"touchend",this.handleMouseUpHandler_)}handleMouseUp(event){const doc=this.el_.ownerDocument;this.off(doc,"mousemove",this.throttledHandleMouseMove),this.off(doc,"touchmove",this.throttledHandleMouseMove),this.off(doc,"mouseup",this.handleMouseUpHandler_),this.off(doc,"touchend",this.handleMouseUpHandler_)}handleMouseMove(event){this.volumeBar.handleMouseMove(event)}}VolumeControl.prototype.options_={children:["volumeBar"]},Component$1.registerComponent("VolumeControl",VolumeControl);class MuteToggle extends Button{constructor(player,options){super(player,options),function(self,player){player.tech_&&!player.tech_.featuresMuteControl&&self.addClass("vjs-hidden"),self.on(player,"loadstart",(function(){player.tech_.featuresMuteControl?self.removeClass("vjs-hidden"):self.addClass("vjs-hidden")}))}(this,player),this.on(player,["loadstart","volumechange"],(e=>this.update(e)))}buildCSSClass(){return"vjs-mute-control ".concat(super.buildCSSClass())}handleClick(event){const vol=this.player_.volume(),lastVolume=this.player_.lastVolume_();if(0===vol){const volumeToSet=lastVolume<.1?.1:lastVolume;this.player_.volume(volumeToSet),this.player_.muted(!1)}else this.player_.muted(!this.player_.muted())}update(event){this.updateIcon_(),this.updateControlText_()}updateIcon_(){const vol=this.player_.volume();let level=3;this.setIcon("volume-high"),IS_IOS&&this.player_.tech_&&this.player_.tech_.el_&&this.player_.muted(this.player_.tech_.el_.muted),0===vol||this.player_.muted()?(this.setIcon("volume-mute"),level=0):vol<.33?(this.setIcon("volume-low"),level=1):vol<.67&&(this.setIcon("volume-medium"),level=2),removeClass(this.el_,[0,1,2,3].reduce(((str,i)=>str+"".concat(i?" ":"","vjs-vol-").concat(i)),"")),addClass(this.el_,"vjs-vol-".concat(level))}updateControlText_(){const text=this.player_.muted()||0===this.player_.volume()?"Unmute":"Mute";this.controlText()!==text&&this.controlText(text)}}MuteToggle.prototype.controlText_="Mute",Component$1.registerComponent("MuteToggle",MuteToggle);class VolumePanel extends Component$1{constructor(player){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};void 0!==options.inline?options.inline=options.inline:options.inline=!0,(void 0===options.volumeControl||isPlain(options.volumeControl))&&(options.volumeControl=options.volumeControl||{},options.volumeControl.vertical=!options.inline),super(player,options),this.handleKeyPressHandler_=e=>this.handleKeyPress(e),this.on(player,["loadstart"],(e=>this.volumePanelState_(e))),this.on(this.muteToggle,"keyup",(e=>this.handleKeyPress(e))),this.on(this.volumeControl,"keyup",(e=>this.handleVolumeControlKeyUp(e))),this.on("keydown",(e=>this.handleKeyPress(e))),this.on("mouseover",(e=>this.handleMouseOver(e))),this.on("mouseout",(e=>this.handleMouseOut(e))),this.on(this.volumeControl,["slideractive"],this.sliderActive_),this.on(this.volumeControl,["sliderinactive"],this.sliderInactive_)}sliderActive_(){this.addClass("vjs-slider-active")}sliderInactive_(){this.removeClass("vjs-slider-active")}volumePanelState_(){this.volumeControl.hasClass("vjs-hidden")&&this.muteToggle.hasClass("vjs-hidden")&&this.addClass("vjs-hidden"),this.volumeControl.hasClass("vjs-hidden")&&!this.muteToggle.hasClass("vjs-hidden")&&this.addClass("vjs-mute-toggle-only")}createEl(){let orientationClass="vjs-volume-panel-horizontal";return this.options_.inline||(orientationClass="vjs-volume-panel-vertical"),super.createEl("div",{className:"vjs-volume-panel vjs-control ".concat(orientationClass)})}dispose(){this.handleMouseOut(),super.dispose()}handleVolumeControlKeyUp(event){keycode.isEventKey(event,"Esc")&&this.muteToggle.focus()}handleMouseOver(event){this.addClass("vjs-hover"),on(document,"keyup",this.handleKeyPressHandler_)}handleMouseOut(event){this.removeClass("vjs-hover"),off(document,"keyup",this.handleKeyPressHandler_)}handleKeyPress(event){keycode.isEventKey(event,"Esc")&&this.handleMouseOut()}}VolumePanel.prototype.options_={children:["muteToggle","volumeControl"]},Component$1.registerComponent("VolumePanel",VolumePanel);class SkipForward extends Button{constructor(player,options){super(player,options),this.validOptions=[5,10,30],this.skipTime=this.getSkipForwardTime(),this.skipTime&&this.validOptions.includes(this.skipTime)?(this.setIcon("forward-".concat(this.skipTime)),this.controlText(this.localize("Skip forward {1} seconds",[this.skipTime])),this.show()):this.hide()}getSkipForwardTime(){const playerOptions=this.options_.playerOptions;return playerOptions.controlBar&&playerOptions.controlBar.skipButtons&&playerOptions.controlBar.skipButtons.forward}buildCSSClass(){return"vjs-skip-forward-".concat(this.getSkipForwardTime()," ").concat(super.buildCSSClass())}handleClick(event){if(isNaN(this.player_.duration()))return;const currentVideoTime=this.player_.currentTime(),liveTracker=this.player_.liveTracker,duration=liveTracker&&liveTracker.isLive()?liveTracker.seekableEnd():this.player_.duration();let newTime;newTime=currentVideoTime+this.skipTime<=duration?currentVideoTime+this.skipTime:duration,this.player_.currentTime(newTime)}handleLanguagechange(){this.controlText(this.localize("Skip forward {1} seconds",[this.skipTime]))}}SkipForward.prototype.controlText_="Skip Forward",Component$1.registerComponent("SkipForward",SkipForward);class SkipBackward extends Button{constructor(player,options){super(player,options),this.validOptions=[5,10,30],this.skipTime=this.getSkipBackwardTime(),this.skipTime&&this.validOptions.includes(this.skipTime)?(this.setIcon("replay-".concat(this.skipTime)),this.controlText(this.localize("Skip backward {1} seconds",[this.skipTime])),this.show()):this.hide()}getSkipBackwardTime(){const playerOptions=this.options_.playerOptions;return playerOptions.controlBar&&playerOptions.controlBar.skipButtons&&playerOptions.controlBar.skipButtons.backward}buildCSSClass(){return"vjs-skip-backward-".concat(this.getSkipBackwardTime()," ").concat(super.buildCSSClass())}handleClick(event){const currentVideoTime=this.player_.currentTime(),liveTracker=this.player_.liveTracker,seekableStart=liveTracker&&liveTracker.isLive()&&liveTracker.seekableStart();let newTime;newTime=seekableStart&&currentVideoTime-this.skipTime<=seekableStart?seekableStart:currentVideoTime>=this.skipTime?currentVideoTime-this.skipTime:0,this.player_.currentTime(newTime)}handleLanguagechange(){this.controlText(this.localize("Skip backward {1} seconds",[this.skipTime]))}}SkipBackward.prototype.controlText_="Skip Backward",Component$1.registerComponent("SkipBackward",SkipBackward);class Menu extends Component$1{constructor(player,options){super(player,options),options&&(this.menuButton_=options.menuButton),this.focusedChild_=-1,this.on("keydown",(e=>this.handleKeyDown(e))),this.boundHandleBlur_=e=>this.handleBlur(e),this.boundHandleTapClick_=e=>this.handleTapClick(e)}addEventListenerForItem(component){component instanceof Component$1&&(this.on(component,"blur",this.boundHandleBlur_),this.on(component,["tap","click"],this.boundHandleTapClick_))}removeEventListenerForItem(component){component instanceof Component$1&&(this.off(component,"blur",this.boundHandleBlur_),this.off(component,["tap","click"],this.boundHandleTapClick_))}removeChild(component){"string"==typeof component&&(component=this.getChild(component)),this.removeEventListenerForItem(component),super.removeChild(component)}addItem(component){const childComponent=this.addChild(component);childComponent&&this.addEventListenerForItem(childComponent)}createEl(){const contentElType=this.options_.contentElType||"ul";this.contentEl_=createEl(contentElType,{className:"vjs-menu-content"}),this.contentEl_.setAttribute("role","menu");const el=super.createEl("div",{append:this.contentEl_,className:"vjs-menu"});return el.appendChild(this.contentEl_),on(el,"click",(function(event){event.preventDefault(),event.stopImmediatePropagation()})),el}dispose(){this.contentEl_=null,this.boundHandleBlur_=null,this.boundHandleTapClick_=null,super.dispose()}handleBlur(event){const relatedTarget=event.relatedTarget||document.activeElement;if(!this.children().some((element=>element.el()===relatedTarget))){const btn=this.menuButton_;btn&&btn.buttonPressed_&&relatedTarget!==btn.el().firstChild&&btn.unpressButton()}}handleTapClick(event){if(this.menuButton_){this.menuButton_.unpressButton();const childComponents=this.children();if(!Array.isArray(childComponents))return;const foundComponent=childComponents.filter((component=>component.el()===event.target))[0];if(!foundComponent)return;"CaptionSettingsMenuItem"!==foundComponent.name()&&this.menuButton_.focus()}}handleKeyDown(event){keycode.isEventKey(event,"Left")||keycode.isEventKey(event,"Down")?(event.preventDefault(),event.stopPropagation(),this.stepForward()):(keycode.isEventKey(event,"Right")||keycode.isEventKey(event,"Up"))&&(event.preventDefault(),event.stopPropagation(),this.stepBack())}stepForward(){let stepChild=0;void 0!==this.focusedChild_&&(stepChild=this.focusedChild_+1),this.focus(stepChild)}stepBack(){let stepChild=0;void 0!==this.focusedChild_&&(stepChild=this.focusedChild_-1),this.focus(stepChild)}focus(){let item=arguments.length>0&&void 0!==arguments[0]?arguments[0]:0;const children=this.children().slice();children.length&&children[0].hasClass("vjs-menu-title")&&children.shift(),children.length>0&&(item<0?item=0:item>=children.length&&(item=children.length-1),this.focusedChild_=item,children[item].el_.focus())}}Component$1.registerComponent("Menu",Menu);class MenuButton extends Component$1{constructor(player){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};super(player,options),this.menuButton_=new Button(player,options),this.menuButton_.controlText(this.controlText_),this.menuButton_.el_.setAttribute("aria-haspopup","true");const buttonClass=Button.prototype.buildCSSClass();this.menuButton_.el_.className=this.buildCSSClass()+" "+buttonClass,this.menuButton_.removeClass("vjs-control"),this.addChild(this.menuButton_),this.update(),this.enabled_=!0;const handleClick=e=>this.handleClick(e);this.handleMenuKeyUp_=e=>this.handleMenuKeyUp(e),this.on(this.menuButton_,"tap",handleClick),this.on(this.menuButton_,"click",handleClick),this.on(this.menuButton_,"keydown",(e=>this.handleKeyDown(e))),this.on(this.menuButton_,"mouseenter",(()=>{this.addClass("vjs-hover"),this.menu.show(),on(document,"keyup",this.handleMenuKeyUp_)})),this.on("mouseleave",(e=>this.handleMouseLeave(e))),this.on("keydown",(e=>this.handleSubmenuKeyDown(e)))}update(){const menu=this.createMenu();this.menu&&(this.menu.dispose(),this.removeChild(this.menu)),this.menu=menu,this.addChild(menu),this.buttonPressed_=!1,this.menuButton_.el_.setAttribute("aria-expanded","false"),this.items&&this.items.length<=this.hideThreshold_?(this.hide(),this.menu.contentEl_.removeAttribute("role")):(this.show(),this.menu.contentEl_.setAttribute("role","menu"))}createMenu(){const menu=new Menu(this.player_,{menuButton:this});if(this.hideThreshold_=0,this.options_.title){const titleEl=createEl("li",{className:"vjs-menu-title",textContent:toTitleCase$1(this.options_.title),tabIndex:-1}),titleComponent=new Component$1(this.player_,{el:titleEl});menu.addItem(titleComponent)}if(this.items=this.createItems(),this.items)for(let i=0;i<this.items.length;i++)menu.addItem(this.items[i]);return menu}createItems(){}createEl(){return super.createEl("div",{className:this.buildWrapperCSSClass()},{})}setIcon(name){super.setIcon(name,this.menuButton_.el_)}buildWrapperCSSClass(){let menuButtonClass="vjs-menu-button";!0===this.options_.inline?menuButtonClass+="-inline":menuButtonClass+="-popup";const buttonClass=Button.prototype.buildCSSClass();return"vjs-menu-button ".concat(menuButtonClass," ").concat(buttonClass," ").concat(super.buildCSSClass())}buildCSSClass(){let menuButtonClass="vjs-menu-button";return!0===this.options_.inline?menuButtonClass+="-inline":menuButtonClass+="-popup","vjs-menu-button ".concat(menuButtonClass," ").concat(super.buildCSSClass())}controlText(text){let el=arguments.length>1&&void 0!==arguments[1]?arguments[1]:this.menuButton_.el();return this.menuButton_.controlText(text,el)}dispose(){this.handleMouseLeave(),super.dispose()}handleClick(event){this.buttonPressed_?this.unpressButton():this.pressButton()}handleMouseLeave(event){this.removeClass("vjs-hover"),off(document,"keyup",this.handleMenuKeyUp_)}focus(){this.menuButton_.focus()}blur(){this.menuButton_.blur()}handleKeyDown(event){keycode.isEventKey(event,"Esc")||keycode.isEventKey(event,"Tab")?(this.buttonPressed_&&this.unpressButton(),keycode.isEventKey(event,"Tab")||(event.preventDefault(),this.menuButton_.focus())):(keycode.isEventKey(event,"Up")||keycode.isEventKey(event,"Down"))&&(this.buttonPressed_||(event.preventDefault(),this.pressButton()))}handleMenuKeyUp(event){(keycode.isEventKey(event,"Esc")||keycode.isEventKey(event,"Tab"))&&this.removeClass("vjs-hover")}handleSubmenuKeyPress(event){this.handleSubmenuKeyDown(event)}handleSubmenuKeyDown(event){(keycode.isEventKey(event,"Esc")||keycode.isEventKey(event,"Tab"))&&(this.buttonPressed_&&this.unpressButton(),keycode.isEventKey(event,"Tab")||(event.preventDefault(),this.menuButton_.focus()))}pressButton(){if(this.enabled_){if(this.buttonPressed_=!0,this.menu.show(),this.menu.lockShowing(),this.menuButton_.el_.setAttribute("aria-expanded","true"),IS_IOS&&isInFrame())return;this.menu.focus()}}unpressButton(){this.enabled_&&(this.buttonPressed_=!1,this.menu.unlockShowing(),this.menu.hide(),this.menuButton_.el_.setAttribute("aria-expanded","false"))}disable(){this.unpressButton(),this.enabled_=!1,this.addClass("vjs-disabled"),this.menuButton_.disable()}enable(){this.enabled_=!0,this.removeClass("vjs-disabled"),this.menuButton_.enable()}}Component$1.registerComponent("MenuButton",MenuButton);class TrackButton extends MenuButton{constructor(player,options){const tracks=options.tracks;if(super(player,options),this.items.length<=1&&this.hide(),!tracks)return;const updateHandler=bind_(this,this.update);tracks.addEventListener("removetrack",updateHandler),tracks.addEventListener("addtrack",updateHandler),tracks.addEventListener("labelchange",updateHandler),this.player_.on("ready",updateHandler),this.player_.on("dispose",(function(){tracks.removeEventListener("removetrack",updateHandler),tracks.removeEventListener("addtrack",updateHandler),tracks.removeEventListener("labelchange",updateHandler)}))}}Component$1.registerComponent("TrackButton",TrackButton);const MenuKeys=["Tab","Esc","Up","Down","Right","Left"];class MenuItem extends ClickableComponent{constructor(player,options){super(player,options),this.selectable=options.selectable,this.isSelected_=options.selected||!1,this.multiSelectable=options.multiSelectable,this.selected(this.isSelected_),this.selectable?this.multiSelectable?this.el_.setAttribute("role","menuitemcheckbox"):this.el_.setAttribute("role","menuitemradio"):this.el_.setAttribute("role","menuitem")}createEl(type,props,attrs){this.nonIconControl=!0;const el=super.createEl("li",Object.assign({className:"vjs-menu-item",tabIndex:-1},props),attrs),menuItemEl=createEl("span",{className:"vjs-menu-item-text",textContent:this.localize(this.options_.label)});return this.player_.options_.experimentalSvgIcons?el.appendChild(menuItemEl):el.replaceChild(menuItemEl,el.querySelector(".vjs-icon-placeholder")),el}handleKeyDown(event){MenuKeys.some((key=>keycode.isEventKey(event,key)))||super.handleKeyDown(event)}handleClick(event){this.selected(!0)}selected(selected){this.selectable&&(selected?(this.addClass("vjs-selected"),this.el_.setAttribute("aria-checked","true"),this.controlText(", selected"),this.isSelected_=!0):(this.removeClass("vjs-selected"),this.el_.setAttribute("aria-checked","false"),this.controlText(""),this.isSelected_=!1))}}Component$1.registerComponent("MenuItem",MenuItem);class TextTrackMenuItem extends MenuItem{constructor(player,options){var _this3;const track=options.track,tracks=player.textTracks();options.label=track.label||track.language||"Unknown",options.selected="showing"===track.mode,super(player,options),_this3=this,this.track=track,this.kinds=(options.kinds||[options.kind||this.track.kind]).filter(Boolean);const changeHandler=function(){for(var _len17=arguments.length,args=new Array(_len17),_key17=0;_key17<_len17;_key17++)args[_key17]=arguments[_key17];_this3.handleTracksChange.apply(_this3,args)},selectedLanguageChangeHandler=function(){for(var _len18=arguments.length,args=new Array(_len18),_key18=0;_key18<_len18;_key18++)args[_key18]=arguments[_key18];_this3.handleSelectedLanguageChange.apply(_this3,args)};if(player.on(["loadstart","texttrackchange"],changeHandler),tracks.addEventListener("change",changeHandler),tracks.addEventListener("selectedlanguagechange",selectedLanguageChangeHandler),this.on("dispose",(function(){player.off(["loadstart","texttrackchange"],changeHandler),tracks.removeEventListener("change",changeHandler),tracks.removeEventListener("selectedlanguagechange",selectedLanguageChangeHandler)})),void 0===tracks.onchange){let event;this.on(["tap","click"],(function(){if("object"!=typeof window.Event)try{event=new window.Event("change")}catch(err){}event||(event=document.createEvent("Event"),event.initEvent("change",!0,!0)),tracks.dispatchEvent(event)}))}this.handleTracksChange()}handleClick(event){const referenceTrack=this.track,tracks=this.player_.textTracks();if(super.handleClick(event),tracks)for(let i=0;i<tracks.length;i++){const track=tracks[i];-1!==this.kinds.indexOf(track.kind)&&(track===referenceTrack?"showing"!==track.mode&&(track.mode="showing"):"disabled"!==track.mode&&(track.mode="disabled"))}}handleTracksChange(event){const shouldBeSelected="showing"===this.track.mode;shouldBeSelected!==this.isSelected_&&this.selected(shouldBeSelected)}handleSelectedLanguageChange(event){if("showing"===this.track.mode){const selectedLanguage=this.player_.cache_.selectedLanguage;if(selectedLanguage&&selectedLanguage.enabled&&selectedLanguage.language===this.track.language&&selectedLanguage.kind!==this.track.kind)return;this.player_.cache_.selectedLanguage={enabled:!0,language:this.track.language,kind:this.track.kind}}}dispose(){this.track=null,super.dispose()}}Component$1.registerComponent("TextTrackMenuItem",TextTrackMenuItem);class OffTextTrackMenuItem extends TextTrackMenuItem{constructor(player,options){options.track={player:player,kind:options.kind,kinds:options.kinds,default:!1,mode:"disabled"},options.kinds||(options.kinds=[options.kind]),options.label?options.track.label=options.label:options.track.label=options.kinds.join(" and ")+" off",options.selectable=!0,options.multiSelectable=!1,super(player,options)}handleTracksChange(event){const tracks=this.player().textTracks();let shouldBeSelected=!0;for(let i=0,l=tracks.length;i<l;i++){const track=tracks[i];if(this.options_.kinds.indexOf(track.kind)>-1&&"showing"===track.mode){shouldBeSelected=!1;break}}shouldBeSelected!==this.isSelected_&&this.selected(shouldBeSelected)}handleSelectedLanguageChange(event){const tracks=this.player().textTracks();let allHidden=!0;for(let i=0,l=tracks.length;i<l;i++){const track=tracks[i];if(["captions","descriptions","subtitles"].indexOf(track.kind)>-1&&"showing"===track.mode){allHidden=!1;break}}allHidden&&(this.player_.cache_.selectedLanguage={enabled:!1})}handleLanguagechange(){this.$(".vjs-menu-item-text").textContent=this.player_.localize(this.options_.label),super.handleLanguagechange()}}Component$1.registerComponent("OffTextTrackMenuItem",OffTextTrackMenuItem);class TextTrackButton extends TrackButton{constructor(player){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};options.tracks=player.textTracks(),super(player,options)}createItems(){let label,items=arguments.length>0&&void 0!==arguments[0]?arguments[0]:[],TrackMenuItem=arguments.length>1&&void 0!==arguments[1]?arguments[1]:TextTrackMenuItem;this.label_&&(label="".concat(this.label_," off")),items.push(new OffTextTrackMenuItem(this.player_,{kinds:this.kinds_,kind:this.kind_,label:label})),this.hideThreshold_+=1;const tracks=this.player_.textTracks();Array.isArray(this.kinds_)||(this.kinds_=[this.kind_]);for(let i=0;i<tracks.length;i++){const track=tracks[i];if(this.kinds_.indexOf(track.kind)>-1){const item=new TrackMenuItem(this.player_,{track:track,kinds:this.kinds_,kind:this.kind_,selectable:!0,multiSelectable:!1});item.addClass("vjs-".concat(track.kind,"-menu-item")),items.push(item)}}return items}}Component$1.registerComponent("TextTrackButton",TextTrackButton);class ChaptersTrackMenuItem extends MenuItem{constructor(player,options){const track=options.track,cue=options.cue,currentTime=player.currentTime();options.selectable=!0,options.multiSelectable=!1,options.label=cue.text,options.selected=cue.startTime<=currentTime&&currentTime<cue.endTime,super(player,options),this.track=track,this.cue=cue}handleClick(event){super.handleClick(),this.player_.currentTime(this.cue.startTime)}}Component$1.registerComponent("ChaptersTrackMenuItem",ChaptersTrackMenuItem);class ChaptersButton extends TextTrackButton{constructor(player,options,ready){super(player,options,ready),this.setIcon("chapters"),this.selectCurrentItem_=()=>{this.items.forEach((item=>{item.selected(this.track_.activeCues[0]===item.cue)}))}}buildCSSClass(){return"vjs-chapters-button ".concat(super.buildCSSClass())}buildWrapperCSSClass(){return"vjs-chapters-button ".concat(super.buildWrapperCSSClass())}update(event){if(event&&event.track&&"chapters"!==event.track.kind)return;const track=this.findChaptersTrack();track!==this.track_?(this.setTrack(track),super.update()):(!this.items||track&&track.cues&&track.cues.length!==this.items.length)&&super.update()}setTrack(track){if(this.track_!==track){if(this.updateHandler_||(this.updateHandler_=this.update.bind(this)),this.track_){const remoteTextTrackEl=this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);remoteTextTrackEl&&remoteTextTrackEl.removeEventListener("load",this.updateHandler_),this.track_.removeEventListener("cuechange",this.selectCurrentItem_),this.track_=null}if(this.track_=track,this.track_){this.track_.mode="hidden";const remoteTextTrackEl=this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);remoteTextTrackEl&&remoteTextTrackEl.addEventListener("load",this.updateHandler_),this.track_.addEventListener("cuechange",this.selectCurrentItem_)}}}findChaptersTrack(){const tracks=this.player_.textTracks()||[];for(let i=tracks.length-1;i>=0;i--){const track=tracks[i];if(track.kind===this.kind_)return track}}getMenuCaption(){return this.track_&&this.track_.label?this.track_.label:this.localize(toTitleCase$1(this.kind_))}createMenu(){return this.options_.title=this.getMenuCaption(),super.createMenu()}createItems(){const items=[];if(!this.track_)return items;const cues=this.track_.cues;if(!cues)return items;for(let i=0,l=cues.length;i<l;i++){const cue=cues[i],mi=new ChaptersTrackMenuItem(this.player_,{track:this.track_,cue:cue});items.push(mi)}return items}}ChaptersButton.prototype.kind_="chapters",ChaptersButton.prototype.controlText_="Chapters",Component$1.registerComponent("ChaptersButton",ChaptersButton);class DescriptionsButton extends TextTrackButton{constructor(player,options,ready){super(player,options,ready),this.setIcon("audio-description");const tracks=player.textTracks(),changeHandler=bind_(this,this.handleTracksChange);tracks.addEventListener("change",changeHandler),this.on("dispose",(function(){tracks.removeEventListener("change",changeHandler)}))}handleTracksChange(event){const tracks=this.player().textTracks();let disabled=!1;for(let i=0,l=tracks.length;i<l;i++){const track=tracks[i];if(track.kind!==this.kind_&&"showing"===track.mode){disabled=!0;break}}disabled?this.disable():this.enable()}buildCSSClass(){return"vjs-descriptions-button ".concat(super.buildCSSClass())}buildWrapperCSSClass(){return"vjs-descriptions-button ".concat(super.buildWrapperCSSClass())}}DescriptionsButton.prototype.kind_="descriptions",DescriptionsButton.prototype.controlText_="Descriptions",Component$1.registerComponent("DescriptionsButton",DescriptionsButton);class SubtitlesButton extends TextTrackButton{constructor(player,options,ready){super(player,options,ready),this.setIcon("subtitles")}buildCSSClass(){return"vjs-subtitles-button ".concat(super.buildCSSClass())}buildWrapperCSSClass(){return"vjs-subtitles-button ".concat(super.buildWrapperCSSClass())}}SubtitlesButton.prototype.kind_="subtitles",SubtitlesButton.prototype.controlText_="Subtitles",Component$1.registerComponent("SubtitlesButton",SubtitlesButton);class CaptionSettingsMenuItem extends TextTrackMenuItem{constructor(player,options){options.track={player:player,kind:options.kind,label:options.kind+" settings",selectable:!1,default:!1,mode:"disabled"},options.selectable=!1,options.name="CaptionSettingsMenuItem",super(player,options),this.addClass("vjs-texttrack-settings"),this.controlText(", opens "+options.kind+" settings dialog")}handleClick(event){this.player().getChild("textTrackSettings").open()}handleLanguagechange(){this.$(".vjs-menu-item-text").textContent=this.player_.localize(this.options_.kind+" settings"),super.handleLanguagechange()}}Component$1.registerComponent("CaptionSettingsMenuItem",CaptionSettingsMenuItem);class CaptionsButton extends TextTrackButton{constructor(player,options,ready){super(player,options,ready),this.setIcon("captions")}buildCSSClass(){return"vjs-captions-button ".concat(super.buildCSSClass())}buildWrapperCSSClass(){return"vjs-captions-button ".concat(super.buildWrapperCSSClass())}createItems(){const items=[];return this.player().tech_&&this.player().tech_.featuresNativeTextTracks||!this.player().getChild("textTrackSettings")||(items.push(new CaptionSettingsMenuItem(this.player_,{kind:this.kind_})),this.hideThreshold_+=1),super.createItems(items)}}CaptionsButton.prototype.kind_="captions",CaptionsButton.prototype.controlText_="Captions",Component$1.registerComponent("CaptionsButton",CaptionsButton);class SubsCapsMenuItem extends TextTrackMenuItem{createEl(type,props,attrs){const el=super.createEl(type,props,attrs),parentSpan=el.querySelector(".vjs-menu-item-text");return"captions"===this.options_.track.kind&&(this.player_.options_.experimentalSvgIcons?this.setIcon("captions",el):parentSpan.appendChild(createEl("span",{className:"vjs-icon-placeholder"},{"aria-hidden":!0})),parentSpan.appendChild(createEl("span",{className:"vjs-control-text",textContent:" ".concat(this.localize("Captions"))}))),el}}Component$1.registerComponent("SubsCapsMenuItem",SubsCapsMenuItem);class SubsCapsButton extends TextTrackButton{constructor(player){super(player,arguments.length>1&&void 0!==arguments[1]?arguments[1]:{}),this.label_="subtitles",this.setIcon("subtitles"),["en","en-us","en-ca","fr-ca"].indexOf(this.player_.language_)>-1&&(this.label_="captions",this.setIcon("captions")),this.menuButton_.controlText(toTitleCase$1(this.label_))}buildCSSClass(){return"vjs-subs-caps-button ".concat(super.buildCSSClass())}buildWrapperCSSClass(){return"vjs-subs-caps-button ".concat(super.buildWrapperCSSClass())}createItems(){let items=[];return this.player().tech_&&this.player().tech_.featuresNativeTextTracks||!this.player().getChild("textTrackSettings")||(items.push(new CaptionSettingsMenuItem(this.player_,{kind:this.label_})),this.hideThreshold_+=1),items=super.createItems(items,SubsCapsMenuItem),items}}SubsCapsButton.prototype.kinds_=["captions","subtitles"],SubsCapsButton.prototype.controlText_="Subtitles",Component$1.registerComponent("SubsCapsButton",SubsCapsButton);class AudioTrackMenuItem extends MenuItem{constructor(player,options){var _this4;const track=options.track,tracks=player.audioTracks();options.label=track.label||track.language||"Unknown",options.selected=track.enabled,super(player,options),_this4=this,this.track=track,this.addClass("vjs-".concat(track.kind,"-menu-item"));const changeHandler=function(){for(var _len19=arguments.length,args=new Array(_len19),_key19=0;_key19<_len19;_key19++)args[_key19]=arguments[_key19];_this4.handleTracksChange.apply(_this4,args)};tracks.addEventListener("change",changeHandler),this.on("dispose",(()=>{tracks.removeEventListener("change",changeHandler)}))}createEl(type,props,attrs){const el=super.createEl(type,props,attrs),parentSpan=el.querySelector(".vjs-menu-item-text");return["main-desc","description"].indexOf(this.options_.track.kind)>=0&&(parentSpan.appendChild(createEl("span",{className:"vjs-icon-placeholder"},{"aria-hidden":!0})),parentSpan.appendChild(createEl("span",{className:"vjs-control-text",textContent:" "+this.localize("Descriptions")}))),el}handleClick(event){if(super.handleClick(event),this.track.enabled=!0,this.player_.tech_.featuresNativeAudioTracks){const tracks=this.player_.audioTracks();for(let i=0;i<tracks.length;i++){const track=tracks[i];track!==this.track&&(track.enabled=track===this.track)}}}handleTracksChange(event){this.selected(this.track.enabled)}}Component$1.registerComponent("AudioTrackMenuItem",AudioTrackMenuItem);class AudioTrackButton extends TrackButton{constructor(player){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};options.tracks=player.audioTracks(),super(player,options),this.setIcon("audio")}buildCSSClass(){return"vjs-audio-button ".concat(super.buildCSSClass())}buildWrapperCSSClass(){return"vjs-audio-button ".concat(super.buildWrapperCSSClass())}createItems(){let items=arguments.length>0&&void 0!==arguments[0]?arguments[0]:[];this.hideThreshold_=1;const tracks=this.player_.audioTracks();for(let i=0;i<tracks.length;i++){const track=tracks[i];items.push(new AudioTrackMenuItem(this.player_,{track:track,selectable:!0,multiSelectable:!1}))}return items}}AudioTrackButton.prototype.controlText_="Audio Track",Component$1.registerComponent("AudioTrackButton",AudioTrackButton);class PlaybackRateMenuItem extends MenuItem{constructor(player,options){const label=options.rate,rate=parseFloat(label,10);options.label=label,options.selected=rate===player.playbackRate(),options.selectable=!0,options.multiSelectable=!1,super(player,options),this.label=label,this.rate=rate,this.on(player,"ratechange",(e=>this.update(e)))}handleClick(event){super.handleClick(),this.player().playbackRate(this.rate)}update(event){this.selected(this.player().playbackRate()===this.rate)}}PlaybackRateMenuItem.prototype.contentElType="button",Component$1.registerComponent("PlaybackRateMenuItem",PlaybackRateMenuItem);class PlaybackRateMenuButton extends MenuButton{constructor(player,options){super(player,options),this.menuButton_.el_.setAttribute("aria-describedby",this.labelElId_),this.updateVisibility(),this.updateLabel(),this.on(player,"loadstart",(e=>this.updateVisibility(e))),this.on(player,"ratechange",(e=>this.updateLabel(e))),this.on(player,"playbackrateschange",(e=>this.handlePlaybackRateschange(e)))}createEl(){const el=super.createEl();return this.labelElId_="vjs-playback-rate-value-label-"+this.id_,this.labelEl_=createEl("div",{className:"vjs-playback-rate-value",id:this.labelElId_,textContent:"1x"}),el.appendChild(this.labelEl_),el}dispose(){this.labelEl_=null,super.dispose()}buildCSSClass(){return"vjs-playback-rate ".concat(super.buildCSSClass())}buildWrapperCSSClass(){return"vjs-playback-rate ".concat(super.buildWrapperCSSClass())}createItems(){const rates=this.playbackRates(),items=[];for(let i=rates.length-1;i>=0;i--)items.push(new PlaybackRateMenuItem(this.player(),{rate:rates[i]+"x"}));return items}handlePlaybackRateschange(event){this.update()}playbackRates(){const player=this.player();return player.playbackRates&&player.playbackRates()||[]}playbackRateSupported(){return this.player().tech_&&this.player().tech_.featuresPlaybackRate&&this.playbackRates()&&this.playbackRates().length>0}updateVisibility(event){this.playbackRateSupported()?this.removeClass("vjs-hidden"):this.addClass("vjs-hidden")}updateLabel(event){this.playbackRateSupported()&&(this.labelEl_.textContent=this.player().playbackRate()+"x")}}PlaybackRateMenuButton.prototype.controlText_="Playback Rate",Component$1.registerComponent("PlaybackRateMenuButton",PlaybackRateMenuButton);class Spacer extends Component$1{buildCSSClass(){return"vjs-spacer ".concat(super.buildCSSClass())}createEl(){let tag=arguments.length>0&&void 0!==arguments[0]?arguments[0]:"div",props=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},attributes=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};return props.className||(props.className=this.buildCSSClass()),super.createEl(tag,props,attributes)}}Component$1.registerComponent("Spacer",Spacer);Component$1.registerComponent("CustomControlSpacer",class extends Spacer{buildCSSClass(){return"vjs-custom-control-spacer ".concat(super.buildCSSClass())}createEl(){return super.createEl("div",{className:this.buildCSSClass(),textContent:" "})}});class ControlBar extends Component$1{createEl(){return super.createEl("div",{className:"vjs-control-bar",dir:"ltr"})}}ControlBar.prototype.options_={children:["playToggle","skipBackward","skipForward","volumePanel","currentTimeDisplay","timeDivider","durationDisplay","progressControl","liveDisplay","seekToLive","remainingTimeDisplay","customControlSpacer","playbackRateMenuButton","chaptersButton","descriptionsButton","subsCapsButton","audioTrackButton","pictureInPictureToggle","fullscreenToggle"]},Component$1.registerComponent("ControlBar",ControlBar);class ErrorDisplay extends ModalDialog{constructor(player,options){super(player,options),this.on(player,"error",(e=>{this.close(),this.open(e)}))}buildCSSClass(){return"vjs-error-display ".concat(super.buildCSSClass())}content(){const error=this.player().error();return error?this.localize(error.message):""}}ErrorDisplay.prototype.options_=Object.assign({},ModalDialog.prototype.options_,{pauseOnOpen:!1,fillAlways:!0,temporary:!1,uncloseable:!0}),Component$1.registerComponent("ErrorDisplay",ErrorDisplay);const COLOR_BLACK=["#000","Black"],COLOR_BLUE=["#00F","Blue"],COLOR_CYAN=["#0FF","Cyan"],COLOR_GREEN=["#0F0","Green"],COLOR_MAGENTA=["#F0F","Magenta"],COLOR_RED=["#F00","Red"],COLOR_WHITE=["#FFF","White"],COLOR_YELLOW=["#FF0","Yellow"],OPACITY_OPAQUE=["1","Opaque"],OPACITY_SEMI=["0.5","Semi-Transparent"],OPACITY_TRANS=["0","Transparent"],selectConfigs={backgroundColor:{selector:".vjs-bg-color > select",id:"captions-background-color-%s",label:"Color",options:[COLOR_BLACK,COLOR_WHITE,COLOR_RED,COLOR_GREEN,COLOR_BLUE,COLOR_YELLOW,COLOR_MAGENTA,COLOR_CYAN]},backgroundOpacity:{selector:".vjs-bg-opacity > select",id:"captions-background-opacity-%s",label:"Opacity",options:[OPACITY_OPAQUE,OPACITY_SEMI,OPACITY_TRANS]},color:{selector:".vjs-text-color > select",id:"captions-foreground-color-%s",label:"Color",options:[COLOR_WHITE,COLOR_BLACK,COLOR_RED,COLOR_GREEN,COLOR_BLUE,COLOR_YELLOW,COLOR_MAGENTA,COLOR_CYAN]},edgeStyle:{selector:".vjs-edge-style > select",id:"%s",label:"Text Edge Style",options:[["none","None"],["raised","Raised"],["depressed","Depressed"],["uniform","Uniform"],["dropshadow","Drop shadow"]]},fontFamily:{selector:".vjs-font-family > select",id:"captions-font-family-%s",label:"Font Family",options:[["proportionalSansSerif","Proportional Sans-Serif"],["monospaceSansSerif","Monospace Sans-Serif"],["proportionalSerif","Proportional Serif"],["monospaceSerif","Monospace Serif"],["casual","Casual"],["script","Script"],["small-caps","Small Caps"]]},fontPercent:{selector:".vjs-font-percent > select",id:"captions-font-size-%s",label:"Font Size",options:[["0.50","50%"],["0.75","75%"],["1.00","100%"],["1.25","125%"],["1.50","150%"],["1.75","175%"],["2.00","200%"],["3.00","300%"],["4.00","400%"]],default:2,parser:v=>"1.00"===v?null:Number(v)},textOpacity:{selector:".vjs-text-opacity > select",id:"captions-foreground-opacity-%s",label:"Opacity",options:[OPACITY_OPAQUE,OPACITY_SEMI]},windowColor:{selector:".vjs-window-color > select",id:"captions-window-color-%s",label:"Color"},windowOpacity:{selector:".vjs-window-opacity > select",id:"captions-window-opacity-%s",label:"Opacity",options:[OPACITY_TRANS,OPACITY_SEMI,OPACITY_OPAQUE]}};function parseOptionValue(value,parser){if(parser&&(value=parser(value)),value&&"none"!==value)return value}selectConfigs.windowColor.options=selectConfigs.backgroundColor.options;Component$1.registerComponent("TextTrackSettings",class extends ModalDialog{constructor(player,options){options.temporary=!1,super(player,options),this.updateDisplay=this.updateDisplay.bind(this),this.fill(),this.hasBeenOpened_=this.hasBeenFilled_=!0,this.endDialog=createEl("p",{className:"vjs-control-text",textContent:this.localize("End of dialog window.")}),this.el().appendChild(this.endDialog),this.setDefaults(),void 0===options.persistTextTrackSettings&&(this.options_.persistTextTrackSettings=this.options_.playerOptions.persistTextTrackSettings),this.on(this.$(".vjs-done-button"),"click",(()=>{this.saveSettings(),this.close()})),this.on(this.$(".vjs-default-button"),"click",(()=>{this.setDefaults(),this.updateDisplay()})),each(selectConfigs,(config=>{this.on(this.$(config.selector),"change",this.updateDisplay)})),this.options_.persistTextTrackSettings&&this.restoreSettings()}dispose(){this.endDialog=null,super.dispose()}createElSelect_(key){let legendId=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"",type=arguments.length>2&&void 0!==arguments[2]?arguments[2]:"label";const config=selectConfigs[key],id=config.id.replace("%s",this.id_),selectLabelledbyIds=[legendId,id].join(" ").trim(),guid="vjs_select_".concat(newGUID());return["<".concat(type,' id="').concat(id,'"').concat("label"===type?' for="'.concat(guid,'" class="vjs-label"'):"",">"),this.localize(config.label),"</".concat(type,">"),'<select aria-labelledby="'.concat(selectLabelledbyIds,'" id="').concat(guid,'">')].concat(config.options.map((o=>{const optionId=id+"-"+o[1].replace(/\W+/g,"");return['<option id="'.concat(optionId,'" value="').concat(o[0],'" '),'aria-labelledby="'.concat(selectLabelledbyIds," ").concat(optionId,'">'),this.localize(o[1]),"</option>"].join("")}))).concat("</select>").join("")}createElFgColor_(){const legendId="captions-text-legend-".concat(this.id_);return['<fieldset class="vjs-fg vjs-track-setting">','<legend id="'.concat(legendId,'">'),this.localize("Text"),"</legend>",'<span class="vjs-text-color">',this.createElSelect_("color",legendId),"</span>",'<span class="vjs-text-opacity vjs-opacity">',this.createElSelect_("textOpacity",legendId),"</span>","</fieldset>"].join("")}createElBgColor_(){const legendId="captions-background-".concat(this.id_);return['<fieldset class="vjs-bg vjs-track-setting">','<legend id="'.concat(legendId,'">'),this.localize("Text Background"),"</legend>",'<span class="vjs-bg-color">',this.createElSelect_("backgroundColor",legendId),"</span>",'<span class="vjs-bg-opacity vjs-opacity">',this.createElSelect_("backgroundOpacity",legendId),"</span>","</fieldset>"].join("")}createElWinColor_(){const legendId="captions-window-".concat(this.id_);return['<fieldset class="vjs-window vjs-track-setting">','<legend id="'.concat(legendId,'">'),this.localize("Caption Area Background"),"</legend>",'<span class="vjs-window-color">',this.createElSelect_("windowColor",legendId),"</span>",'<span class="vjs-window-opacity vjs-opacity">',this.createElSelect_("windowOpacity",legendId),"</span>","</fieldset>"].join("")}createElColors_(){return createEl("div",{className:"vjs-track-settings-colors",innerHTML:[this.createElFgColor_(),this.createElBgColor_(),this.createElWinColor_()].join("")})}createElFont_(){return createEl("div",{className:"vjs-track-settings-font",innerHTML:['<fieldset class="vjs-font-percent vjs-track-setting">',this.createElSelect_("fontPercent","","legend"),"</fieldset>",'<fieldset class="vjs-edge-style vjs-track-setting">',this.createElSelect_("edgeStyle","","legend"),"</fieldset>",'<fieldset class="vjs-font-family vjs-track-setting">',this.createElSelect_("fontFamily","","legend"),"</fieldset>"].join("")})}createElControls_(){const defaultsDescription=this.localize("restore all settings to the default values");return createEl("div",{className:"vjs-track-settings-controls",innerHTML:['<button type="button" class="vjs-default-button" title="'.concat(defaultsDescription,'">'),this.localize("Reset"),'<span class="vjs-control-text"> '.concat(defaultsDescription,"</span>"),"</button>",'<button type="button" class="vjs-done-button">'.concat(this.localize("Done"),"</button>")].join("")})}content(){return[this.createElColors_(),this.createElFont_(),this.createElControls_()]}label(){return this.localize("Caption Settings Dialog")}description(){return this.localize("Beginning of dialog window. Escape will cancel and close the window.")}buildCSSClass(){return super.buildCSSClass()+" vjs-text-track-settings"}getValues(){return reduce(selectConfigs,((accum,config,key)=>{const value=(el=this.$(config.selector),parser=config.parser,parseOptionValue(el.options[el.options.selectedIndex].value,parser));var el,parser;return void 0!==value&&(accum[key]=value),accum}),{})}setValues(values){each(selectConfigs,((config,key)=>{!function(el,value,parser){if(value)for(let i=0;i<el.options.length;i++)if(parseOptionValue(el.options[i].value,parser)===value){el.selectedIndex=i;break}}(this.$(config.selector),values[key],config.parser)}))}setDefaults(){each(selectConfigs,(config=>{const index=config.hasOwnProperty("default")?config.default:0;this.$(config.selector).selectedIndex=index}))}restoreSettings(){let values;try{values=JSON.parse(window.localStorage.getItem("vjs-text-track-settings"))}catch(err){log$1.warn(err)}values&&this.setValues(values)}saveSettings(){if(!this.options_.persistTextTrackSettings)return;const values=this.getValues();try{Object.keys(values).length?window.localStorage.setItem("vjs-text-track-settings",JSON.stringify(values)):window.localStorage.removeItem("vjs-text-track-settings")}catch(err){log$1.warn(err)}}updateDisplay(){const ttDisplay=this.player_.getChild("textTrackDisplay");ttDisplay&&ttDisplay.updateDisplay()}conditionalBlur_(){this.previouslyActiveEl_=null;const cb=this.player_.controlBar,subsCapsBtn=cb&&cb.subsCapsButton,ccBtn=cb&&cb.captionsButton;subsCapsBtn?subsCapsBtn.focus():ccBtn&&ccBtn.focus()}handleLanguagechange(){this.fill()}});Component$1.registerComponent("ResizeManager",class extends Component$1{constructor(player,options){let RESIZE_OBSERVER_AVAILABLE=options.ResizeObserver||window.ResizeObserver;null===options.ResizeObserver&&(RESIZE_OBSERVER_AVAILABLE=!1);super(player,merge$2({createEl:!RESIZE_OBSERVER_AVAILABLE,reportTouchActivity:!1},options)),this.ResizeObserver=options.ResizeObserver||window.ResizeObserver,this.loadListener_=null,this.resizeObserver_=null,this.debouncedHandler_=debounce((()=>{this.resizeHandler()}),100,!1,this),RESIZE_OBSERVER_AVAILABLE?(this.resizeObserver_=new this.ResizeObserver(this.debouncedHandler_),this.resizeObserver_.observe(player.el())):(this.loadListener_=()=>{if(!this.el_||!this.el_.contentWindow)return;const debouncedHandler_=this.debouncedHandler_;let unloadListener_=this.unloadListener_=function(){off(this,"resize",debouncedHandler_),off(this,"unload",unloadListener_),unloadListener_=null};on(this.el_.contentWindow,"unload",unloadListener_),on(this.el_.contentWindow,"resize",debouncedHandler_)},this.one("load",this.loadListener_))}createEl(){return super.createEl("iframe",{className:"vjs-resize-manager",tabIndex:-1,title:this.localize("No content")},{"aria-hidden":"true"})}resizeHandler(){this.player_&&this.player_.trigger&&this.player_.trigger("playerresize")}dispose(){this.debouncedHandler_&&this.debouncedHandler_.cancel(),this.resizeObserver_&&(this.player_.el()&&this.resizeObserver_.unobserve(this.player_.el()),this.resizeObserver_.disconnect()),this.loadListener_&&this.off("load",this.loadListener_),this.el_&&this.el_.contentWindow&&this.unloadListener_&&this.unloadListener_.call(this.el_.contentWindow),this.ResizeObserver=null,this.resizeObserver=null,this.debouncedHandler_=null,this.loadListener_=null,super.dispose()}});const defaults={trackingThreshold:20,liveTolerance:15};Component$1.registerComponent("LiveTracker",class extends Component$1{constructor(player,options){super(player,merge$2(defaults,options,{createEl:!1})),this.trackLiveHandler_=()=>this.trackLive_(),this.handlePlay_=e=>this.handlePlay(e),this.handleFirstTimeupdate_=e=>this.handleFirstTimeupdate(e),this.handleSeeked_=e=>this.handleSeeked(e),this.seekToLiveEdge_=e=>this.seekToLiveEdge(e),this.reset_(),this.on(this.player_,"durationchange",(e=>this.handleDurationchange(e))),this.on(this.player_,"canplay",(()=>this.toggleTracking()))}trackLive_(){const seekable=this.player_.seekable();if(!seekable||!seekable.length)return;const newTime=Number(window.performance.now().toFixed(4)),deltaTime=-1===this.lastTime_?0:(newTime-this.lastTime_)/1e3;this.lastTime_=newTime,this.pastSeekEnd_=this.pastSeekEnd()+deltaTime;const liveCurrentTime=this.liveCurrentTime(),currentTime=this.player_.currentTime();let isBehind=this.player_.paused()||this.seekedBehindLive_||Math.abs(liveCurrentTime-currentTime)>this.options_.liveTolerance;this.timeupdateSeen_&&liveCurrentTime!==1/0||(isBehind=!1),isBehind!==this.behindLiveEdge_&&(this.behindLiveEdge_=isBehind,this.trigger("liveedgechange"))}handleDurationchange(){this.toggleTracking()}toggleTracking(){this.player_.duration()===1/0&&this.liveWindow()>=this.options_.trackingThreshold?(this.player_.options_.liveui&&this.player_.addClass("vjs-liveui"),this.startTracking()):(this.player_.removeClass("vjs-liveui"),this.stopTracking())}startTracking(){this.isTracking()||(this.timeupdateSeen_||(this.timeupdateSeen_=this.player_.hasStarted()),this.trackingInterval_=this.setInterval(this.trackLiveHandler_,30),this.trackLive_(),this.on(this.player_,["play","pause"],this.trackLiveHandler_),this.timeupdateSeen_?this.on(this.player_,"seeked",this.handleSeeked_):(this.one(this.player_,"play",this.handlePlay_),this.one(this.player_,"timeupdate",this.handleFirstTimeupdate_)))}handleFirstTimeupdate(){this.timeupdateSeen_=!0,this.on(this.player_,"seeked",this.handleSeeked_)}handleSeeked(){const timeDiff=Math.abs(this.liveCurrentTime()-this.player_.currentTime());this.seekedBehindLive_=this.nextSeekedFromUser_&&timeDiff>2,this.nextSeekedFromUser_=!1,this.trackLive_()}handlePlay(){this.one(this.player_,"timeupdate",this.seekToLiveEdge_)}reset_(){this.lastTime_=-1,this.pastSeekEnd_=0,this.lastSeekEnd_=-1,this.behindLiveEdge_=!0,this.timeupdateSeen_=!1,this.seekedBehindLive_=!1,this.nextSeekedFromUser_=!1,this.clearInterval(this.trackingInterval_),this.trackingInterval_=null,this.off(this.player_,["play","pause"],this.trackLiveHandler_),this.off(this.player_,"seeked",this.handleSeeked_),this.off(this.player_,"play",this.handlePlay_),this.off(this.player_,"timeupdate",this.handleFirstTimeupdate_),this.off(this.player_,"timeupdate",this.seekToLiveEdge_)}nextSeekedFromUser(){this.nextSeekedFromUser_=!0}stopTracking(){this.isTracking()&&(this.reset_(),this.trigger("liveedgechange"))}seekableEnd(){const seekable=this.player_.seekable(),seekableEnds=[];let i=seekable?seekable.length:0;for(;i--;)seekableEnds.push(seekable.end(i));return seekableEnds.length?seekableEnds.sort()[seekableEnds.length-1]:1/0}seekableStart(){const seekable=this.player_.seekable(),seekableStarts=[];let i=seekable?seekable.length:0;for(;i--;)seekableStarts.push(seekable.start(i));return seekableStarts.length?seekableStarts.sort()[0]:0}liveWindow(){const liveCurrentTime=this.liveCurrentTime();return liveCurrentTime===1/0?0:liveCurrentTime-this.seekableStart()}isLive(){return this.isTracking()}atLiveEdge(){return!this.behindLiveEdge()}liveCurrentTime(){return this.pastSeekEnd()+this.seekableEnd()}pastSeekEnd(){const seekableEnd=this.seekableEnd();return-1!==this.lastSeekEnd_&&seekableEnd!==this.lastSeekEnd_&&(this.pastSeekEnd_=0),this.lastSeekEnd_=seekableEnd,this.pastSeekEnd_}behindLiveEdge(){return this.behindLiveEdge_}isTracking(){return"number"==typeof this.trackingInterval_}seekToLiveEdge(){this.seekedBehindLive_=!1,this.atLiveEdge()||(this.nextSeekedFromUser_=!1,this.player_.currentTime(this.liveCurrentTime()))}dispose(){this.stopTracking(),super.dispose()}});Component$1.registerComponent("TitleBar",class extends Component$1{constructor(player,options){super(player,options),this.on("statechanged",(e=>this.updateDom_())),this.updateDom_()}createEl(){return this.els={title:createEl("div",{className:"vjs-title-bar-title",id:"vjs-title-bar-title-".concat(newGUID())}),description:createEl("div",{className:"vjs-title-bar-description",id:"vjs-title-bar-description-".concat(newGUID())})},createEl("div",{className:"vjs-title-bar"},{},values$1(this.els))}updateDom_(){const tech=this.player_.tech_,techEl=tech&&tech.el_,techAriaAttrs={title:"aria-labelledby",description:"aria-describedby"};["title","description"].forEach((k=>{const value=this.state[k],el=this.els[k],techAriaAttr=techAriaAttrs[k];emptyEl(el),value&&textContent(el,value),techEl&&(techEl.removeAttribute(techAriaAttr),value&&techEl.setAttribute(techAriaAttr,el.id))})),this.state.title||this.state.description?this.show():this.hide()}update(options){this.setState(options)}dispose(){const tech=this.player_.tech_,techEl=tech&&tech.el_;techEl&&(techEl.removeAttribute("aria-labelledby"),techEl.removeAttribute("aria-describedby")),super.dispose(),this.els=null}});const sourcesetLoad=tech=>{const el=tech.el();if(el.hasAttribute("src"))return tech.triggerSourceset(el.src),!0;const sources=tech.$$("source"),srcUrls=[];let src="";if(!sources.length)return!1;for(let i=0;i<sources.length;i++){const url=sources[i].src;url&&-1===srcUrls.indexOf(url)&&srcUrls.push(url)}return!!srcUrls.length&&(1===srcUrls.length&&(src=srcUrls[0]),tech.triggerSourceset(src),!0)},innerHTMLDescriptorPolyfill=Object.defineProperty({},"innerHTML",{get(){return this.cloneNode(!0).innerHTML},set(v){const dummy=document.createElement(this.nodeName.toLowerCase());dummy.innerHTML=v;const docFrag=document.createDocumentFragment();for(;dummy.childNodes.length;)docFrag.appendChild(dummy.childNodes[0]);return this.innerText="",window.Element.prototype.appendChild.call(this,docFrag),this.innerHTML}}),getDescriptor=(priority,prop)=>{let descriptor={};for(let i=0;i<priority.length&&(descriptor=Object.getOwnPropertyDescriptor(priority[i],prop),!(descriptor&&descriptor.set&&descriptor.get));i++);return descriptor.enumerable=!0,descriptor.configurable=!0,descriptor},firstSourceWatch=function(tech){const el=tech.el();if(el.resetSourceWatch_)return;const old={},innerDescriptor=(tech=>getDescriptor([tech.el(),window.HTMLMediaElement.prototype,window.Element.prototype,innerHTMLDescriptorPolyfill],"innerHTML"))(tech),appendWrapper=appendFn=>function(){for(var _len20=arguments.length,args=new Array(_len20),_key20=0;_key20<_len20;_key20++)args[_key20]=arguments[_key20];const retval=appendFn.apply(el,args);return sourcesetLoad(tech),retval};["append","appendChild","insertAdjacentHTML"].forEach((k=>{el[k]&&(old[k]=el[k],el[k]=appendWrapper(old[k]))})),Object.defineProperty(el,"innerHTML",merge$2(innerDescriptor,{set:appendWrapper(innerDescriptor.set)})),el.resetSourceWatch_=()=>{el.resetSourceWatch_=null,Object.keys(old).forEach((k=>{el[k]=old[k]})),Object.defineProperty(el,"innerHTML",innerDescriptor)},tech.one("sourceset",el.resetSourceWatch_)},srcDescriptorPolyfill=Object.defineProperty({},"src",{get(){return this.hasAttribute("src")?getAbsoluteURL(window.Element.prototype.getAttribute.call(this,"src")):""},set(v){return window.Element.prototype.setAttribute.call(this,"src",v),v}}),setupSourceset=function(tech){if(!tech.featuresSourceset)return;const el=tech.el();if(el.resetSourceset_)return;const srcDescriptor=(tech=>getDescriptor([tech.el(),window.HTMLMediaElement.prototype,srcDescriptorPolyfill],"src"))(tech),oldSetAttribute=el.setAttribute,oldLoad=el.load;Object.defineProperty(el,"src",merge$2(srcDescriptor,{set:v=>{const retval=srcDescriptor.set.call(el,v);return tech.triggerSourceset(el.src),retval}})),el.setAttribute=(n,v)=>{const retval=oldSetAttribute.call(el,n,v);return/src/i.test(n)&&tech.triggerSourceset(el.src),retval},el.load=()=>{const retval=oldLoad.call(el);return sourcesetLoad(tech)||(tech.triggerSourceset(""),firstSourceWatch(tech)),retval},el.currentSrc?tech.triggerSourceset(el.currentSrc):sourcesetLoad(tech)||firstSourceWatch(tech),el.resetSourceset_=()=>{el.resetSourceset_=null,el.load=oldLoad,el.setAttribute=oldSetAttribute,Object.defineProperty(el,"src",srcDescriptor),el.resetSourceWatch_&&el.resetSourceWatch_()}};class Html5 extends Tech{constructor(options,ready){super(options,ready);const source=options.source;let crossoriginTracks=!1;if(this.featuresVideoFrameCallback=this.featuresVideoFrameCallback&&"VIDEO"===this.el_.tagName,source&&(this.el_.currentSrc!==source.src||options.tag&&3===options.tag.initNetworkState_)?this.setSource(source):this.handleLateInit_(this.el_),options.enableSourceset&&this.setupSourcesetHandling_(),this.isScrubbing_=!1,this.el_.hasChildNodes()){const nodes=this.el_.childNodes;let nodesLength=nodes.length;const removeNodes=[];for(;nodesLength--;){const node=nodes[nodesLength];"track"===node.nodeName.toLowerCase()&&(this.featuresNativeTextTracks?(this.remoteTextTrackEls().addTrackElement_(node),this.remoteTextTracks().addTrack(node.track),this.textTracks().addTrack(node.track),crossoriginTracks||this.el_.hasAttribute("crossorigin")||!isCrossOrigin(node.src)||(crossoriginTracks=!0)):removeNodes.push(node))}for(let i=0;i<removeNodes.length;i++)this.el_.removeChild(removeNodes[i])}this.proxyNativeTracks_(),this.featuresNativeTextTracks&&crossoriginTracks&&log$1.warn("Text Tracks are being loaded from another origin but the crossorigin attribute isn't used.\nThis may prevent text tracks from loading."),this.restoreMetadataTracksInIOSNativePlayer_(),(TOUCH_ENABLED||IS_IPHONE)&&!0===options.nativeControlsForTouch&&this.setControls(!0),this.proxyWebkitFullscreen_(),this.triggerReady()}dispose(){this.el_&&this.el_.resetSourceset_&&this.el_.resetSourceset_(),Html5.disposeMediaElement(this.el_),this.options_=null,super.dispose()}setupSourcesetHandling_(){setupSourceset(this)}restoreMetadataTracksInIOSNativePlayer_(){const textTracks=this.textTracks();let metadataTracksPreFullscreenState;const takeMetadataTrackSnapshot=()=>{metadataTracksPreFullscreenState=[];for(let i=0;i<textTracks.length;i++){const track=textTracks[i];"metadata"===track.kind&&metadataTracksPreFullscreenState.push({track:track,storedMode:track.mode})}};takeMetadataTrackSnapshot(),textTracks.addEventListener("change",takeMetadataTrackSnapshot),this.on("dispose",(()=>textTracks.removeEventListener("change",takeMetadataTrackSnapshot)));const restoreTrackMode=()=>{for(let i=0;i<metadataTracksPreFullscreenState.length;i++){const storedTrack=metadataTracksPreFullscreenState[i];"disabled"===storedTrack.track.mode&&storedTrack.track.mode!==storedTrack.storedMode&&(storedTrack.track.mode=storedTrack.storedMode)}textTracks.removeEventListener("change",restoreTrackMode)};this.on("webkitbeginfullscreen",(()=>{textTracks.removeEventListener("change",takeMetadataTrackSnapshot),textTracks.removeEventListener("change",restoreTrackMode),textTracks.addEventListener("change",restoreTrackMode)})),this.on("webkitendfullscreen",(()=>{textTracks.removeEventListener("change",takeMetadataTrackSnapshot),textTracks.addEventListener("change",takeMetadataTrackSnapshot),textTracks.removeEventListener("change",restoreTrackMode)}))}overrideNative_(type,override){if(override!==this["featuresNative".concat(type,"Tracks")])return;const lowerCaseType=type.toLowerCase();this["".concat(lowerCaseType,"TracksListeners_")]&&Object.keys(this["".concat(lowerCaseType,"TracksListeners_")]).forEach((eventName=>{this.el()["".concat(lowerCaseType,"Tracks")].removeEventListener(eventName,this["".concat(lowerCaseType,"TracksListeners_")][eventName])})),this["featuresNative".concat(type,"Tracks")]=!override,this["".concat(lowerCaseType,"TracksListeners_")]=null,this.proxyNativeTracksForType_(lowerCaseType)}overrideNativeAudioTracks(override){this.overrideNative_("Audio",override)}overrideNativeVideoTracks(override){this.overrideNative_("Video",override)}proxyNativeTracksForType_(name){const props=NORMAL[name],elTracks=this.el()[props.getterName],techTracks=this[props.getterName]();if(!this["featuresNative".concat(props.capitalName,"Tracks")]||!elTracks||!elTracks.addEventListener)return;const listeners={change:e=>{const event={type:"change",target:techTracks,currentTarget:techTracks,srcElement:techTracks};techTracks.trigger(event),"text"===name&&this[REMOTE.remoteText.getterName]().trigger(event)},addtrack(e){techTracks.addTrack(e.track)},removetrack(e){techTracks.removeTrack(e.track)}},removeOldTracks=function(){const removeTracks=[];for(let i=0;i<techTracks.length;i++){let found=!1;for(let j=0;j<elTracks.length;j++)if(elTracks[j]===techTracks[i]){found=!0;break}found||removeTracks.push(techTracks[i])}for(;removeTracks.length;)techTracks.removeTrack(removeTracks.shift())};this[props.getterName+"Listeners_"]=listeners,Object.keys(listeners).forEach((eventName=>{const listener=listeners[eventName];elTracks.addEventListener(eventName,listener),this.on("dispose",(e=>elTracks.removeEventListener(eventName,listener)))})),this.on("loadstart",removeOldTracks),this.on("dispose",(e=>this.off("loadstart",removeOldTracks)))}proxyNativeTracks_(){NORMAL.names.forEach((name=>{this.proxyNativeTracksForType_(name)}))}createEl(){let el=this.options_.tag;if(!el||!this.options_.playerElIngest&&!this.movingMediaElementInDOM){if(el){const clone=el.cloneNode(!0);el.parentNode&&el.parentNode.insertBefore(clone,el),Html5.disposeMediaElement(el),el=clone}else{el=document.createElement("video");const attributes=merge$2({},this.options_.tag&&getAttributes(this.options_.tag));TOUCH_ENABLED&&!0===this.options_.nativeControlsForTouch||delete attributes.controls,setAttributes(el,Object.assign(attributes,{id:this.options_.techId,class:"vjs-tech"}))}el.playerId=this.options_.playerId}void 0!==this.options_.preload&&setAttribute(el,"preload",this.options_.preload),void 0!==this.options_.disablePictureInPicture&&(el.disablePictureInPicture=this.options_.disablePictureInPicture);const settingsAttrs=["loop","muted","playsinline","autoplay"];for(let i=0;i<settingsAttrs.length;i++){const attr=settingsAttrs[i],value=this.options_[attr];void 0!==value&&(value?setAttribute(el,attr,attr):removeAttribute(el,attr),el[attr]=value)}return el}handleLateInit_(el){if(0===el.networkState||3===el.networkState)return;if(0===el.readyState){let loadstartFired=!1;const setLoadstartFired=function(){loadstartFired=!0};this.on("loadstart",setLoadstartFired);const triggerLoadstart=function(){loadstartFired||this.trigger("loadstart")};return this.on("loadedmetadata",triggerLoadstart),void this.ready((function(){this.off("loadstart",setLoadstartFired),this.off("loadedmetadata",triggerLoadstart),loadstartFired||this.trigger("loadstart")}))}const eventsToTrigger=["loadstart"];eventsToTrigger.push("loadedmetadata"),el.readyState>=2&&eventsToTrigger.push("loadeddata"),el.readyState>=3&&eventsToTrigger.push("canplay"),el.readyState>=4&&eventsToTrigger.push("canplaythrough"),this.ready((function(){eventsToTrigger.forEach((function(type){this.trigger(type)}),this)}))}setScrubbing(isScrubbing){this.isScrubbing_=isScrubbing}scrubbing(){return this.isScrubbing_}setCurrentTime(seconds){try{this.isScrubbing_&&this.el_.fastSeek&&IS_ANY_SAFARI?this.el_.fastSeek(seconds):this.el_.currentTime=seconds}catch(e){log$1(e,"Video is not ready. (Video.js)")}}duration(){if(this.el_.duration===1/0&&IS_ANDROID&&IS_CHROME&&0===this.el_.currentTime){const checkProgress=()=>{this.el_.currentTime>0&&(this.el_.duration===1/0&&this.trigger("durationchange"),this.off("timeupdate",checkProgress))};return this.on("timeupdate",checkProgress),NaN}return this.el_.duration||NaN}width(){return this.el_.offsetWidth}height(){return this.el_.offsetHeight}proxyWebkitFullscreen_(){if(!("webkitDisplayingFullscreen"in this.el_))return;const endFn=function(){this.trigger("fullscreenchange",{isFullscreen:!1}),this.el_.controls&&!this.options_.nativeControlsForTouch&&this.controls()&&(this.el_.controls=!1)},beginFn=function(){"webkitPresentationMode"in this.el_&&"picture-in-picture"!==this.el_.webkitPresentationMode&&(this.one("webkitendfullscreen",endFn),this.trigger("fullscreenchange",{isFullscreen:!0,nativeIOSFullscreen:!0}))};this.on("webkitbeginfullscreen",beginFn),this.on("dispose",(()=>{this.off("webkitbeginfullscreen",beginFn),this.off("webkitendfullscreen",endFn)}))}supportsFullScreen(){return"function"==typeof this.el_.webkitEnterFullScreen}enterFullScreen(){const video=this.el_;if(video.paused&&video.networkState<=video.HAVE_METADATA)silencePromise(this.el_.play()),this.setTimeout((function(){video.pause();try{video.webkitEnterFullScreen()}catch(e){this.trigger("fullscreenerror",e)}}),0);else try{video.webkitEnterFullScreen()}catch(e){this.trigger("fullscreenerror",e)}}exitFullScreen(){this.el_.webkitDisplayingFullscreen?this.el_.webkitExitFullScreen():this.trigger("fullscreenerror",new Error("The video is not fullscreen"))}requestPictureInPicture(){return this.el_.requestPictureInPicture()}requestVideoFrameCallback(cb){return this.featuresVideoFrameCallback&&!this.el_.webkitKeys?this.el_.requestVideoFrameCallback(cb):super.requestVideoFrameCallback(cb)}cancelVideoFrameCallback(id){this.featuresVideoFrameCallback&&!this.el_.webkitKeys?this.el_.cancelVideoFrameCallback(id):super.cancelVideoFrameCallback(id)}src(src){if(void 0===src)return this.el_.src;this.setSrc(src)}reset(){Html5.resetMediaElement(this.el_)}currentSrc(){return this.currentSource_?this.currentSource_.src:this.el_.currentSrc}setControls(val){this.el_.controls=!!val}addTextTrack(kind,label,language){return this.featuresNativeTextTracks?this.el_.addTextTrack(kind,label,language):super.addTextTrack(kind,label,language)}createRemoteTextTrack(options){if(!this.featuresNativeTextTracks)return super.createRemoteTextTrack(options);const htmlTrackElement=document.createElement("track");return options.kind&&(htmlTrackElement.kind=options.kind),options.label&&(htmlTrackElement.label=options.label),(options.language||options.srclang)&&(htmlTrackElement.srclang=options.language||options.srclang),options.default&&(htmlTrackElement.default=options.default),options.id&&(htmlTrackElement.id=options.id),options.src&&(htmlTrackElement.src=options.src),htmlTrackElement}addRemoteTextTrack(options,manualCleanup){const htmlTrackElement=super.addRemoteTextTrack(options,manualCleanup);return this.featuresNativeTextTracks&&this.el().appendChild(htmlTrackElement),htmlTrackElement}removeRemoteTextTrack(track){if(super.removeRemoteTextTrack(track),this.featuresNativeTextTracks){const tracks=this.$$("track");let i=tracks.length;for(;i--;)track!==tracks[i]&&track!==tracks[i].track||this.el().removeChild(tracks[i])}}getVideoPlaybackQuality(){if("function"==typeof this.el().getVideoPlaybackQuality)return this.el().getVideoPlaybackQuality();const videoPlaybackQuality={};return void 0!==this.el().webkitDroppedFrameCount&&void 0!==this.el().webkitDecodedFrameCount&&(videoPlaybackQuality.droppedVideoFrames=this.el().webkitDroppedFrameCount,videoPlaybackQuality.totalVideoFrames=this.el().webkitDecodedFrameCount),window.performance&&(videoPlaybackQuality.creationTime=window.performance.now()),videoPlaybackQuality}}defineLazyProperty(Html5,"TEST_VID",(function(){if(!isReal())return;const video=document.createElement("video"),track=document.createElement("track");return track.kind="captions",track.srclang="en",track.label="English",video.appendChild(track),video})),Html5.isSupported=function(){try{Html5.TEST_VID.volume=.5}catch(e){return!1}return!(!Html5.TEST_VID||!Html5.TEST_VID.canPlayType)},Html5.canPlayType=function(type){return Html5.TEST_VID.canPlayType(type)},Html5.canPlaySource=function(srcObj,options){return Html5.canPlayType(srcObj.type)},Html5.canControlVolume=function(){try{const volume=Html5.TEST_VID.volume;Html5.TEST_VID.volume=volume/2+.1;const canControl=volume!==Html5.TEST_VID.volume;return canControl&&IS_IOS?(window.setTimeout((()=>{Html5&&Html5.prototype&&(Html5.prototype.featuresVolumeControl=volume!==Html5.TEST_VID.volume)})),!1):canControl}catch(e){return!1}},Html5.canMuteVolume=function(){try{const muted=Html5.TEST_VID.muted;return Html5.TEST_VID.muted=!muted,Html5.TEST_VID.muted?setAttribute(Html5.TEST_VID,"muted","muted"):removeAttribute(Html5.TEST_VID,"muted"),muted!==Html5.TEST_VID.muted}catch(e){return!1}},Html5.canControlPlaybackRate=function(){if(IS_ANDROID&&IS_CHROME&&CHROME_VERSION<58)return!1;try{const playbackRate=Html5.TEST_VID.playbackRate;return Html5.TEST_VID.playbackRate=playbackRate/2+.1,playbackRate!==Html5.TEST_VID.playbackRate}catch(e){return!1}},Html5.canOverrideAttributes=function(){try{const noop=()=>{};Object.defineProperty(document.createElement("video"),"src",{get:noop,set:noop}),Object.defineProperty(document.createElement("audio"),"src",{get:noop,set:noop}),Object.defineProperty(document.createElement("video"),"innerHTML",{get:noop,set:noop}),Object.defineProperty(document.createElement("audio"),"innerHTML",{get:noop,set:noop})}catch(e){return!1}return!0},Html5.supportsNativeTextTracks=function(){return IS_ANY_SAFARI||IS_IOS&&IS_CHROME},Html5.supportsNativeVideoTracks=function(){return!(!Html5.TEST_VID||!Html5.TEST_VID.videoTracks)},Html5.supportsNativeAudioTracks=function(){return!(!Html5.TEST_VID||!Html5.TEST_VID.audioTracks)},Html5.Events=["loadstart","suspend","abort","error","emptied","stalled","loadedmetadata","loadeddata","canplay","canplaythrough","playing","waiting","seeking","seeked","ended","durationchange","timeupdate","progress","play","pause","ratechange","resize","volumechange"],[["featuresMuteControl","canMuteVolume"],["featuresPlaybackRate","canControlPlaybackRate"],["featuresSourceset","canOverrideAttributes"],["featuresNativeTextTracks","supportsNativeTextTracks"],["featuresNativeVideoTracks","supportsNativeVideoTracks"],["featuresNativeAudioTracks","supportsNativeAudioTracks"]].forEach((function(_ref5){let[key,fn]=_ref5;defineLazyProperty(Html5.prototype,key,(()=>Html5[fn]()),!0)})),Html5.prototype.featuresVolumeControl=Html5.canControlVolume(),Html5.prototype.movingMediaElementInDOM=!IS_IOS,Html5.prototype.featuresFullscreenResize=!0,Html5.prototype.featuresProgressEvents=!0,Html5.prototype.featuresTimeupdateEvents=!0,Html5.prototype.featuresVideoFrameCallback=!(!Html5.TEST_VID||!Html5.TEST_VID.requestVideoFrameCallback),Html5.disposeMediaElement=function(el){if(el){for(el.parentNode&&el.parentNode.removeChild(el);el.hasChildNodes();)el.removeChild(el.firstChild);el.removeAttribute("src"),"function"==typeof el.load&&function(){try{el.load()}catch(e){}}()}},Html5.resetMediaElement=function(el){if(!el)return;const sources=el.querySelectorAll("source");let i=sources.length;for(;i--;)el.removeChild(sources[i]);el.removeAttribute("src"),"function"==typeof el.load&&function(){try{el.load()}catch(e){}}()},["muted","defaultMuted","autoplay","controls","loop","playsinline"].forEach((function(prop){Html5.prototype[prop]=function(){return this.el_[prop]||this.el_.hasAttribute(prop)}})),["muted","defaultMuted","autoplay","loop","playsinline"].forEach((function(prop){Html5.prototype["set"+toTitleCase$1(prop)]=function(v){this.el_[prop]=v,v?this.el_.setAttribute(prop,prop):this.el_.removeAttribute(prop)}})),["paused","currentTime","buffered","volume","poster","preload","error","seeking","seekable","ended","playbackRate","defaultPlaybackRate","disablePictureInPicture","played","networkState","readyState","videoWidth","videoHeight","crossOrigin"].forEach((function(prop){Html5.prototype[prop]=function(){return this.el_[prop]}})),["volume","src","poster","preload","playbackRate","defaultPlaybackRate","disablePictureInPicture","crossOrigin"].forEach((function(prop){Html5.prototype["set"+toTitleCase$1(prop)]=function(v){this.el_[prop]=v}})),["pause","load","play"].forEach((function(prop){Html5.prototype[prop]=function(){return this.el_[prop]()}})),Tech.withSourceHandlers(Html5),Html5.nativeSourceHandler={},Html5.nativeSourceHandler.canPlayType=function(type){try{return Html5.TEST_VID.canPlayType(type)}catch(e){return""}},Html5.nativeSourceHandler.canHandleSource=function(source,options){if(source.type)return Html5.nativeSourceHandler.canPlayType(source.type);if(source.src){const ext=getFileExtension(source.src);return Html5.nativeSourceHandler.canPlayType("video/".concat(ext))}return""},Html5.nativeSourceHandler.handleSource=function(source,tech,options){tech.setSrc(source.src)},Html5.nativeSourceHandler.dispose=function(){},Html5.registerSourceHandler(Html5.nativeSourceHandler),Tech.registerTech("Html5",Html5);const TECH_EVENTS_RETRIGGER=["progress","abort","suspend","emptied","stalled","loadedmetadata","loadeddata","timeupdate","resize","volumechange","texttrackchange"],TECH_EVENTS_QUEUE={canplay:"CanPlay",canplaythrough:"CanPlayThrough",playing:"Playing",seeked:"Seeked"},BREAKPOINT_ORDER=["tiny","xsmall","small","medium","large","xlarge","huge"],BREAKPOINT_CLASSES={};BREAKPOINT_ORDER.forEach((k=>{const v="x"===k.charAt(0)?"x-".concat(k.substring(1)):k;BREAKPOINT_CLASSES[k]="vjs-layout-".concat(v)}));const DEFAULT_BREAKPOINTS={tiny:210,xsmall:320,small:425,medium:768,large:1440,xlarge:2560,huge:1/0};class Player extends Component$1{constructor(tag,options,ready){if(tag.id=tag.id||options.id||"vjs_video_".concat(newGUID()),(options=Object.assign(Player.getTagSettings(tag),options)).initChildren=!1,options.createEl=!1,options.evented=!1,options.reportTouchActivity=!1,!options.language){const closest=tag.closest("[lang]");closest&&(options.language=closest.getAttribute("lang"))}if(super(null,options,ready),this.boundDocumentFullscreenChange_=e=>this.documentFullscreenChange_(e),this.boundFullWindowOnEscKey_=e=>this.fullWindowOnEscKey(e),this.boundUpdateStyleEl_=e=>this.updateStyleEl_(e),this.boundApplyInitTime_=e=>this.applyInitTime_(e),this.boundUpdateCurrentBreakpoint_=e=>this.updateCurrentBreakpoint_(e),this.boundHandleTechClick_=e=>this.handleTechClick_(e),this.boundHandleTechDoubleClick_=e=>this.handleTechDoubleClick_(e),this.boundHandleTechTouchStart_=e=>this.handleTechTouchStart_(e),this.boundHandleTechTouchMove_=e=>this.handleTechTouchMove_(e),this.boundHandleTechTouchEnd_=e=>this.handleTechTouchEnd_(e),this.boundHandleTechTap_=e=>this.handleTechTap_(e),this.isFullscreen_=!1,this.log=createLogger(this.id_),this.fsApi_=FullscreenApi,this.isPosterFromTech_=!1,this.queuedCallbacks_=[],this.isReady_=!1,this.hasStarted_=!1,this.userActive_=!1,this.debugEnabled_=!1,this.audioOnlyMode_=!1,this.audioPosterMode_=!1,this.audioOnlyCache_={playerHeight:null,hiddenChildren:[]},!this.options_||!this.options_.techOrder||!this.options_.techOrder.length)throw new Error("No techOrder specified. Did you overwrite videojs.options instead of just changing the properties you want to override?");if(this.tag=tag,this.tagAttributes=tag&&getAttributes(tag),this.language(this.options_.language),options.languages){const languagesToLower={};Object.getOwnPropertyNames(options.languages).forEach((function(name){languagesToLower[name.toLowerCase()]=options.languages[name]})),this.languages_=languagesToLower}else this.languages_=Player.prototype.options_.languages;this.resetCache_(),this.poster_=options.poster||"",this.controls_=!!options.controls,tag.controls=!1,tag.removeAttribute("controls"),this.changingSrc_=!1,this.playCallbacks_=[],this.playTerminatedQueue_=[],tag.hasAttribute("autoplay")?this.autoplay(!0):this.autoplay(this.options_.autoplay),options.plugins&&Object.keys(options.plugins).forEach((name=>{if("function"!=typeof this[name])throw new Error('plugin "'.concat(name,'" does not exist'))})),this.scrubbing_=!1,this.el_=this.createEl(),evented(this,{eventBusKey:"el_"}),this.fsApi_.requestFullscreen&&(on(document,this.fsApi_.fullscreenchange,this.boundDocumentFullscreenChange_),this.on(this.fsApi_.fullscreenchange,this.boundDocumentFullscreenChange_)),this.fluid_&&this.on(["playerreset","resize"],this.boundUpdateStyleEl_);const playerOptionsCopy=merge$2(this.options_);if(options.plugins&&Object.keys(options.plugins).forEach((name=>{this[name](options.plugins[name])})),options.debug&&this.debug(!0),this.options_.playerOptions=playerOptionsCopy,this.middleware_=[],this.playbackRates(options.playbackRates),options.experimentalSvgIcons){const parsedSVG=(new window.DOMParser).parseFromString('<svg xmlns="http://www.w3.org/2000/svg">\n  <defs>\n    <symbol viewBox="0 0 48 48" id="vjs-icon-play">\n      <path d="M16 10v28l22-14z"></path>\n    </symbol>\n    <symbol viewBox="0 0 48 48" id="vjs-icon-pause">\n      <path d="M12 38h8V10h-8v28zm16-28v28h8V10h-8z"></path>\n   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Falling back to Font Icons."),this.options_.experimentalSvgIcons=null;else{const sprite=parsedSVG.documentElement;sprite.style.display="none",this.el_.appendChild(sprite),this.addClass("vjs-svg-icons-enabled")}}this.initChildren(),this.isAudio("audio"===tag.nodeName.toLowerCase()),this.controls()?this.addClass("vjs-controls-enabled"):this.addClass("vjs-controls-disabled"),this.el_.setAttribute("role","region"),this.isAudio()?this.el_.setAttribute("aria-label",this.localize("Audio Player")):this.el_.setAttribute("aria-label",this.localize("Video Player")),this.isAudio()&&this.addClass("vjs-audio"),TOUCH_ENABLED&&this.addClass("vjs-touch-enabled"),IS_IOS||this.addClass("vjs-workinghover"),Player.players[this.id_]=this;const majorVersion="8.10.0".split(".")[0];this.addClass("vjs-v".concat(majorVersion)),this.userActive(!0),this.reportUserActivity(),this.one("play",(e=>this.listenForUserActivity_(e))),this.on("keydown",(e=>this.handleKeyDown(e))),this.on("languagechange",(e=>this.handleLanguagechange(e))),this.breakpoints(this.options_.breakpoints),this.responsive(this.options_.responsive),this.on("ready",(()=>{this.audioPosterMode(this.options_.audioPosterMode),this.audioOnlyMode(this.options_.audioOnlyMode)}))}dispose(){this.trigger("dispose"),this.off("dispose"),off(document,this.fsApi_.fullscreenchange,this.boundDocumentFullscreenChange_),off(document,"keydown",this.boundFullWindowOnEscKey_),this.styleEl_&&this.styleEl_.parentNode&&(this.styleEl_.parentNode.removeChild(this.styleEl_),this.styleEl_=null),Player.players[this.id_]=null,this.tag&&this.tag.player&&(this.tag.player=null),this.el_&&this.el_.player&&(this.el_.player=null),this.tech_&&(this.tech_.dispose(),this.isPosterFromTech_=!1,this.poster_=""),this.playerElIngest_&&(this.playerElIngest_=null),this.tag&&(this.tag=null),middlewareInstances[this.id()]=null,ALL.names.forEach((name=>{const list=this[ALL[name].getterName]();list&&list.off&&list.off()})),super.dispose({restoreEl:this.options_.restoreEl})}createEl(){let el,tag=this.tag,playerElIngest=this.playerElIngest_=tag.parentNode&&tag.parentNode.hasAttribute&&tag.parentNode.hasAttribute("data-vjs-player");const divEmbed="video-js"===this.tag.tagName.toLowerCase();playerElIngest?el=this.el_=tag.parentNode:divEmbed||(el=this.el_=super.createEl("div"));const attrs=getAttributes(tag);if(divEmbed){for(el=this.el_=tag,tag=this.tag=document.createElement("video");el.children.length;)tag.appendChild(el.firstChild);hasClass(el,"video-js")||addClass(el,"video-js"),el.appendChild(tag),playerElIngest=this.playerElIngest_=el,Object.keys(el).forEach((k=>{try{tag[k]=el[k]}catch(e){}}))}if(tag.setAttribute("tabindex","-1"),attrs.tabindex="-1",IS_CHROME&&IS_WINDOWS&&(tag.setAttribute("role","application"),attrs.role="application"),tag.removeAttribute("width"),tag.removeAttribute("height"),"width"in attrs&&delete attrs.width,"height"in attrs&&delete attrs.height,Object.getOwnPropertyNames(attrs).forEach((function(attr){divEmbed&&"class"===attr||el.setAttribute(attr,attrs[attr]),divEmbed&&tag.setAttribute(attr,attrs[attr])})),tag.playerId=tag.id,tag.id+="_html5_api",tag.className="vjs-tech",tag.player=el.player=this,this.addClass("vjs-paused"),!0!==window.VIDEOJS_NO_DYNAMIC_STYLE){this.styleEl_=createStyleElement("vjs-styles-dimensions");const defaultsStyleEl=$(".vjs-styles-defaults"),head=$("head");head.insertBefore(this.styleEl_,defaultsStyleEl?defaultsStyleEl.nextSibling:head.firstChild)}this.fill_=!1,this.fluid_=!1,this.width(this.options_.width),this.height(this.options_.height),this.fill(this.options_.fill),this.fluid(this.options_.fluid),this.aspectRatio(this.options_.aspectRatio),this.crossOrigin(this.options_.crossOrigin||this.options_.crossorigin);const links=tag.getElementsByTagName("a");for(let i=0;i<links.length;i++){const linkEl=links.item(i);addClass(linkEl,"vjs-hidden"),linkEl.setAttribute("hidden","hidden")}return tag.initNetworkState_=tag.networkState,tag.parentNode&&!playerElIngest&&tag.parentNode.insertBefore(el,tag),prependTo(tag,el),this.children_.unshift(tag),this.el_.setAttribute("lang",this.language_),this.el_.setAttribute("translate","no"),this.el_=el,el}crossOrigin(value){if(void 0===value)return this.techGet_("crossOrigin");null===value||"anonymous"===value||"use-credentials"===value?(this.techCall_("setCrossOrigin",value),this.posterImage&&this.posterImage.crossOrigin(value)):log$1.warn('crossOrigin must be null,  "anonymous" or "use-credentials", given "'.concat(value,'"'))}width(value){return this.dimension("width",value)}height(value){return this.dimension("height",value)}dimension(dimension,value){const privDimension=dimension+"_";if(void 0===value)return this[privDimension]||0;if(""===value||"auto"===value)return this[privDimension]=void 0,void this.updateStyleEl_();const parsedVal=parseFloat(value);isNaN(parsedVal)?log$1.error('Improper value "'.concat(value,'" supplied for for ').concat(dimension)):(this[privDimension]=parsedVal,this.updateStyleEl_())}fluid(bool){if(void 0===bool)return!!this.fluid_;var target,callback;this.fluid_=!!bool,isEvented(this)&&this.off(["playerreset","resize"],this.boundUpdateStyleEl_),bool?(this.addClass("vjs-fluid"),this.fill(!1),callback=()=>{this.on(["playerreset","resize"],this.boundUpdateStyleEl_)},isEvented(target=this)?callback():(target.eventedCallbacks||(target.eventedCallbacks=[]),target.eventedCallbacks.push(callback))):this.removeClass("vjs-fluid"),this.updateStyleEl_()}fill(bool){if(void 0===bool)return!!this.fill_;this.fill_=!!bool,bool?(this.addClass("vjs-fill"),this.fluid(!1)):this.removeClass("vjs-fill")}aspectRatio(ratio){if(void 0===ratio)return this.aspectRatio_;if(!/^\d+\:\d+$/.test(ratio))throw new Error("Improper value supplied for aspect ratio. The format should be width:height, for example 16:9.");this.aspectRatio_=ratio,this.fluid(!0),this.updateStyleEl_()}updateStyleEl_(){if(!0===window.VIDEOJS_NO_DYNAMIC_STYLE){const width="number"==typeof this.width_?this.width_:this.options_.width,height="number"==typeof this.height_?this.height_:this.options_.height,techEl=this.tech_&&this.tech_.el();return void(techEl&&(width>=0&&(techEl.width=width),height>=0&&(techEl.height=height)))}let width,height,aspectRatio,idClass;aspectRatio=void 0!==this.aspectRatio_&&"auto"!==this.aspectRatio_?this.aspectRatio_:this.videoWidth()>0?this.videoWidth()+":"+this.videoHeight():"16:9";const ratioParts=aspectRatio.split(":"),ratioMultiplier=ratioParts[1]/ratioParts[0];width=void 0!==this.width_?this.width_:void 0!==this.height_?this.height_/ratioMultiplier:this.videoWidth()||300,height=void 0!==this.height_?this.height_:width*ratioMultiplier,idClass=/^[^a-zA-Z]/.test(this.id())?"dimensions-"+this.id():this.id()+"-dimensions",this.addClass(idClass),setTextContent(this.styleEl_,"\n      .".concat(idClass," {\n        width: ").concat(width,"px;\n        height: ").concat(height,"px;\n      }\n\n      .").concat(idClass,".vjs-fluid:not(.vjs-audio-only-mode) {\n        padding-top: ").concat(100*ratioMultiplier,"%;\n      }\n    "))}loadTech_(techName,source){this.tech_&&this.unloadTech_();const titleTechName=toTitleCase$1(techName),camelTechName=techName.charAt(0).toLowerCase()+techName.slice(1);"Html5"!==titleTechName&&this.tag&&(Tech.getTech("Html5").disposeMediaElement(this.tag),this.tag.player=null,this.tag=null),this.techName_=titleTechName,this.isReady_=!1;let autoplay=this.autoplay();("string"==typeof this.autoplay()||!0===this.autoplay()&&this.options_.normalizeAutoplay)&&(autoplay=!1);const techOptions={source:source,autoplay:autoplay,nativeControlsForTouch:this.options_.nativeControlsForTouch,playerId:this.id(),techId:"".concat(this.id(),"_").concat(camelTechName,"_api"),playsinline:this.options_.playsinline,preload:this.options_.preload,loop:this.options_.loop,disablePictureInPicture:this.options_.disablePictureInPicture,muted:this.options_.muted,poster:this.poster(),language:this.language(),playerElIngest:this.playerElIngest_||!1,"vtt.js":this.options_["vtt.js"],canOverridePoster:!!this.options_.techCanOverridePoster,enableSourceset:this.options_.enableSourceset};ALL.names.forEach((name=>{const props=ALL[name];techOptions[props.getterName]=this[props.privateName]})),Object.assign(techOptions,this.options_[titleTechName]),Object.assign(techOptions,this.options_[camelTechName]),Object.assign(techOptions,this.options_[techName.toLowerCase()]),this.tag&&(techOptions.tag=this.tag),source&&source.src===this.cache_.src&&this.cache_.currentTime>0&&(techOptions.startTime=this.cache_.currentTime);const TechClass=Tech.getTech(techName);if(!TechClass)throw new Error("No Tech named '".concat(titleTechName,"' exists! '").concat(titleTechName,"' should be registered using videojs.registerTech()'"));this.tech_=new TechClass(techOptions),this.tech_.ready(bind_(this,this.handleTechReady_),!0),textTrackConverter_jsonToTextTracks(this.textTracksJson_||[],this.tech_),TECH_EVENTS_RETRIGGER.forEach((event=>{this.on(this.tech_,event,(e=>this["handleTech".concat(toTitleCase$1(event),"_")](e)))})),Object.keys(TECH_EVENTS_QUEUE).forEach((event=>{this.on(this.tech_,event,(eventObj=>{0===this.tech_.playbackRate()&&this.tech_.seeking()?this.queuedCallbacks_.push({callback:this["handleTech".concat(TECH_EVENTS_QUEUE[event],"_")].bind(this),event:eventObj}):this["handleTech".concat(TECH_EVENTS_QUEUE[event],"_")](eventObj)}))})),this.on(this.tech_,"loadstart",(e=>this.handleTechLoadStart_(e))),this.on(this.tech_,"sourceset",(e=>this.handleTechSourceset_(e))),this.on(this.tech_,"waiting",(e=>this.handleTechWaiting_(e))),this.on(this.tech_,"ended",(e=>this.handleTechEnded_(e))),this.on(this.tech_,"seeking",(e=>this.handleTechSeeking_(e))),this.on(this.tech_,"play",(e=>this.handleTechPlay_(e))),this.on(this.tech_,"pause",(e=>this.handleTechPause_(e))),this.on(this.tech_,"durationchange",(e=>this.handleTechDurationChange_(e))),this.on(this.tech_,"fullscreenchange",((e,data)=>this.handleTechFullscreenChange_(e,data))),this.on(this.tech_,"fullscreenerror",((e,err)=>this.handleTechFullscreenError_(e,err))),this.on(this.tech_,"enterpictureinpicture",(e=>this.handleTechEnterPictureInPicture_(e))),this.on(this.tech_,"leavepictureinpicture",(e=>this.handleTechLeavePictureInPicture_(e))),this.on(this.tech_,"error",(e=>this.handleTechError_(e))),this.on(this.tech_,"posterchange",(e=>this.handleTechPosterChange_(e))),this.on(this.tech_,"textdata",(e=>this.handleTechTextData_(e))),this.on(this.tech_,"ratechange",(e=>this.handleTechRateChange_(e))),this.on(this.tech_,"loadedmetadata",this.boundUpdateStyleEl_),this.usingNativeControls(this.techGet_("controls")),this.controls()&&!this.usingNativeControls()&&this.addTechControlsListeners_(),this.tech_.el().parentNode===this.el()||"Html5"===titleTechName&&this.tag||prependTo(this.tech_.el(),this.el()),this.tag&&(this.tag.player=null,this.tag=null)}unloadTech_(){ALL.names.forEach((name=>{const props=ALL[name];this[props.privateName]=this[props.getterName]()})),this.textTracksJson_=textTrackConverter_textTracksToJson(this.tech_),this.isReady_=!1,this.tech_.dispose(),this.tech_=!1,this.isPosterFromTech_&&(this.poster_="",this.trigger("posterchange")),this.isPosterFromTech_=!1}tech(safety){return void 0===safety&&log$1.warn("Using the tech directly can be dangerous. I hope you know what you're doing.\nSee https://github.com/videojs/video.js/issues/2617 for more info.\n"),this.tech_}version(){return{"video.js":"8.10.0"}}addTechControlsListeners_(){this.removeTechControlsListeners_(),this.on(this.tech_,"click",this.boundHandleTechClick_),this.on(this.tech_,"dblclick",this.boundHandleTechDoubleClick_),this.on(this.tech_,"touchstart",this.boundHandleTechTouchStart_),this.on(this.tech_,"touchmove",this.boundHandleTechTouchMove_),this.on(this.tech_,"touchend",this.boundHandleTechTouchEnd_),this.on(this.tech_,"tap",this.boundHandleTechTap_)}removeTechControlsListeners_(){this.off(this.tech_,"tap",this.boundHandleTechTap_),this.off(this.tech_,"touchstart",this.boundHandleTechTouchStart_),this.off(this.tech_,"touchmove",this.boundHandleTechTouchMove_),this.off(this.tech_,"touchend",this.boundHandleTechTouchEnd_),this.off(this.tech_,"click",this.boundHandleTechClick_),this.off(this.tech_,"dblclick",this.boundHandleTechDoubleClick_)}handleTechReady_(){this.triggerReady(),this.cache_.volume&&this.techCall_("setVolume",this.cache_.volume),this.handleTechPosterChange_(),this.handleTechDurationChange_()}handleTechLoadStart_(){this.removeClass("vjs-ended","vjs-seeking"),this.error(null),this.handleTechDurationChange_(),this.paused()?(this.hasStarted(!1),this.trigger("loadstart")):this.trigger("loadstart"),this.manualAutoplay_(!0===this.autoplay()&&this.options_.normalizeAutoplay?"play":this.autoplay())}manualAutoplay_(type){if(!this.tech_||"string"!=typeof type)return;const resolveMuted=()=>{const previouslyMuted=this.muted();this.muted(!0);const restoreMuted=()=>{this.muted(previouslyMuted)};this.playTerminatedQueue_.push(restoreMuted);const mutedPromise=this.play();if(isPromise(mutedPromise))return mutedPromise.catch((err=>{throw restoreMuted(),new Error("Rejection at manualAutoplay. Restoring muted value. ".concat(err||""))}))};let promise;return"any"!==type||this.muted()?promise="muted"!==type||this.muted()?this.play():resolveMuted():(promise=this.play(),isPromise(promise)&&(promise=promise.catch(resolveMuted))),isPromise(promise)?promise.then((()=>{this.trigger({type:"autoplay-success",autoplay:type})})).catch((()=>{this.trigger({type:"autoplay-failure",autoplay:type})})):void 0}updateSourceCaches_(){let srcObj=arguments.length>0&&void 0!==arguments[0]?arguments[0]:"",src=srcObj,type="";"string"!=typeof src&&(src=srcObj.src,type=srcObj.type),this.cache_.source=this.cache_.source||{},this.cache_.sources=this.cache_.sources||[],src&&!type&&(type=((player,src)=>{if(!src)return"";if(player.cache_.source.src===src&&player.cache_.source.type)return player.cache_.source.type;const matchingSources=player.cache_.sources.filter((s=>s.src===src));if(matchingSources.length)return matchingSources[0].type;const sources=player.$$("source");for(let i=0;i<sources.length;i++){const s=sources[i];if(s.type&&s.src&&s.src===src)return s.type}return getMimetype(src)})(this,src)),this.cache_.source=merge$2({},srcObj,{src:src,type:type});const matchingSources=this.cache_.sources.filter((s=>s.src&&s.src===src)),sourceElSources=[],sourceEls=this.$$("source"),matchingSourceEls=[];for(let i=0;i<sourceEls.length;i++){const sourceObj=getAttributes(sourceEls[i]);sourceElSources.push(sourceObj),sourceObj.src&&sourceObj.src===src&&matchingSourceEls.push(sourceObj.src)}matchingSourceEls.length&&!matchingSources.length?this.cache_.sources=sourceElSources:matchingSources.length||(this.cache_.sources=[this.cache_.source]),this.cache_.src=src}handleTechSourceset_(event){if(!this.changingSrc_){let updateSourceCaches=src=>this.updateSourceCaches_(src);const playerSrc=this.currentSource().src,eventSrc=event.src;playerSrc&&!/^blob:/.test(playerSrc)&&/^blob:/.test(eventSrc)&&(!this.lastSource_||this.lastSource_.tech!==eventSrc&&this.lastSource_.player!==playerSrc)&&(updateSourceCaches=()=>{}),updateSourceCaches(eventSrc),event.src||this.tech_.any(["sourceset","loadstart"],(e=>{if("sourceset"===e.type)return;const techSrc=this.techGet_("currentSrc");this.lastSource_.tech=techSrc,this.updateSourceCaches_(techSrc)}))}this.lastSource_={player:this.currentSource().src,tech:event.src},this.trigger({src:event.src,type:"sourceset"})}hasStarted(request){if(void 0===request)return this.hasStarted_;request!==this.hasStarted_&&(this.hasStarted_=request,this.hasStarted_?this.addClass("vjs-has-started"):this.removeClass("vjs-has-started"))}handleTechPlay_(){this.removeClass("vjs-ended","vjs-paused"),this.addClass("vjs-playing"),this.hasStarted(!0),this.trigger("play")}handleTechRateChange_(){this.tech_.playbackRate()>0&&0===this.cache_.lastPlaybackRate&&(this.queuedCallbacks_.forEach((queued=>queued.callback(queued.event))),this.queuedCallbacks_=[]),this.cache_.lastPlaybackRate=this.tech_.playbackRate(),this.trigger("ratechange")}handleTechWaiting_(){this.addClass("vjs-waiting"),this.trigger("waiting");const timeWhenWaiting=this.currentTime(),timeUpdateListener=()=>{timeWhenWaiting!==this.currentTime()&&(this.removeClass("vjs-waiting"),this.off("timeupdate",timeUpdateListener))};this.on("timeupdate",timeUpdateListener)}handleTechCanPlay_(){this.removeClass("vjs-waiting"),this.trigger("canplay")}handleTechCanPlayThrough_(){this.removeClass("vjs-waiting"),this.trigger("canplaythrough")}handleTechPlaying_(){this.removeClass("vjs-waiting"),this.trigger("playing")}handleTechSeeking_(){this.addClass("vjs-seeking"),this.trigger("seeking")}handleTechSeeked_(){this.removeClass("vjs-seeking","vjs-ended"),this.trigger("seeked")}handleTechPause_(){this.removeClass("vjs-playing"),this.addClass("vjs-paused"),this.trigger("pause")}handleTechEnded_(){this.addClass("vjs-ended"),this.removeClass("vjs-waiting"),this.options_.loop?(this.currentTime(0),this.play()):this.paused()||this.pause(),this.trigger("ended")}handleTechDurationChange_(){this.duration(this.techGet_("duration"))}handleTechClick_(event){this.controls_&&(void 0!==this.options_&&void 0!==this.options_.userActions&&void 0!==this.options_.userActions.click&&!1===this.options_.userActions.click||(void 0!==this.options_&&void 0!==this.options_.userActions&&"function"==typeof this.options_.userActions.click?this.options_.userActions.click.call(this,event):this.paused()?silencePromise(this.play()):this.pause()))}handleTechDoubleClick_(event){if(!this.controls_)return;Array.prototype.some.call(this.$$(".vjs-control-bar, .vjs-modal-dialog"),(el=>el.contains(event.target)))||void 0!==this.options_&&void 0!==this.options_.userActions&&void 0!==this.options_.userActions.doubleClick&&!1===this.options_.userActions.doubleClick||(void 0!==this.options_&&void 0!==this.options_.userActions&&"function"==typeof this.options_.userActions.doubleClick?this.options_.userActions.doubleClick.call(this,event):this.isFullscreen()?this.exitFullscreen():this.requestFullscreen())}handleTechTap_(){this.userActive(!this.userActive())}handleTechTouchStart_(){this.userWasActive=this.userActive()}handleTechTouchMove_(){this.userWasActive&&this.reportUserActivity()}handleTechTouchEnd_(event){event.cancelable&&event.preventDefault()}toggleFullscreenClass_(){this.isFullscreen()?this.addClass("vjs-fullscreen"):this.removeClass("vjs-fullscreen")}documentFullscreenChange_(e){const targetPlayer=e.target.player;if(targetPlayer&&targetPlayer!==this)return;const el=this.el();let isFs=document[this.fsApi_.fullscreenElement]===el;!isFs&&el.matches&&(isFs=el.matches(":"+this.fsApi_.fullscreen)),this.isFullscreen(isFs)}handleTechFullscreenChange_(event,data){data&&(data.nativeIOSFullscreen&&(this.addClass("vjs-ios-native-fs"),this.tech_.one("webkitendfullscreen",(()=>{this.removeClass("vjs-ios-native-fs")}))),this.isFullscreen(data.isFullscreen))}handleTechFullscreenError_(event,err){this.trigger("fullscreenerror",err)}togglePictureInPictureClass_(){this.isInPictureInPicture()?this.addClass("vjs-picture-in-picture"):this.removeClass("vjs-picture-in-picture")}handleTechEnterPictureInPicture_(event){this.isInPictureInPicture(!0)}handleTechLeavePictureInPicture_(event){this.isInPictureInPicture(!1)}handleTechError_(){const error=this.tech_.error();error&&this.error(error)}handleTechTextData_(){let data=null;arguments.length>1&&(data=arguments[1]),this.trigger("textdata",data)}getCache(){return this.cache_}resetCache_(){this.cache_={currentTime:0,initTime:0,inactivityTimeout:this.options_.inactivityTimeout,duration:NaN,lastVolume:1,lastPlaybackRate:this.defaultPlaybackRate(),media:null,src:"",source:{},sources:[],playbackRates:[],volume:1}}techCall_(method,arg){this.ready((function(){if(method in allowedSetters)return function(middleware,tech,method,arg){return tech[method](middleware.reduce(middlewareIterator(method),arg))}(this.middleware_,this.tech_,method,arg);if(method in allowedMediators)return mediate(this.middleware_,this.tech_,method,arg);try{this.tech_&&this.tech_[method](arg)}catch(e){throw log$1(e),e}}),!0)}techGet_(method){if(this.tech_&&this.tech_.isReady_){if(method in allowedGetters)return function(middleware,tech,method){return middleware.reduceRight(middlewareIterator(method),tech[method]())}(this.middleware_,this.tech_,method);if(method in allowedMediators)return mediate(this.middleware_,this.tech_,method);try{return this.tech_[method]()}catch(e){if(void 0===this.tech_[method])throw log$1("Video.js: ".concat(method," method not defined for ").concat(this.techName_," playback technology."),e),e;if("TypeError"===e.name)throw log$1("Video.js: ".concat(method," unavailable on ").concat(this.techName_," playback technology element."),e),this.tech_.isReady_=!1,e;throw log$1(e),e}}}play(){return new Promise((resolve=>{this.play_(resolve)}))}play_(){let callback=arguments.length>0&&void 0!==arguments[0]?arguments[0]:silencePromise;this.playCallbacks_.push(callback);const isSrcReady=Boolean(!this.changingSrc_&&(this.src()||this.currentSrc())),isSafariOrIOS=Boolean(IS_ANY_SAFARI||IS_IOS);if(this.waitToPlay_&&(this.off(["ready","loadstart"],this.waitToPlay_),this.waitToPlay_=null),!this.isReady_||!isSrcReady)return this.waitToPlay_=e=>{this.play_()},this.one(["ready","loadstart"],this.waitToPlay_),void(!isSrcReady&&isSafariOrIOS&&this.load());const val=this.techGet_("play");isSafariOrIOS&&this.hasClass("vjs-ended")&&this.resetProgressBar_(),null===val?this.runPlayTerminatedQueue_():this.runPlayCallbacks_(val)}runPlayTerminatedQueue_(){const queue=this.playTerminatedQueue_.slice(0);this.playTerminatedQueue_=[],queue.forEach((function(q){q()}))}runPlayCallbacks_(val){const callbacks=this.playCallbacks_.slice(0);this.playCallbacks_=[],this.playTerminatedQueue_=[],callbacks.forEach((function(cb){cb(val)}))}pause(){this.techCall_("pause")}paused(){return!1!==this.techGet_("paused")}played(){return this.techGet_("played")||createTimeRanges$1(0,0)}scrubbing(isScrubbing){if(void 0===isScrubbing)return this.scrubbing_;this.scrubbing_=!!isScrubbing,this.techCall_("setScrubbing",this.scrubbing_),isScrubbing?this.addClass("vjs-scrubbing"):this.removeClass("vjs-scrubbing")}currentTime(seconds){return void 0===seconds?(this.cache_.currentTime=this.techGet_("currentTime")||0,this.cache_.currentTime):(seconds<0&&(seconds=0),this.isReady_&&!this.changingSrc_&&this.tech_&&this.tech_.isReady_?(this.techCall_("setCurrentTime",seconds),this.cache_.initTime=0,void(isFinite(seconds)&&(this.cache_.currentTime=Number(seconds)))):(this.cache_.initTime=seconds,this.off("canplay",this.boundApplyInitTime_),void this.one("canplay",this.boundApplyInitTime_)))}applyInitTime_(){this.currentTime(this.cache_.initTime)}duration(seconds){if(void 0===seconds)return void 0!==this.cache_.duration?this.cache_.duration:NaN;(seconds=parseFloat(seconds))<0&&(seconds=1/0),seconds!==this.cache_.duration&&(this.cache_.duration=seconds,seconds===1/0?this.addClass("vjs-live"):this.removeClass("vjs-live"),isNaN(seconds)||this.trigger("durationchange"))}remainingTime(){return this.duration()-this.currentTime()}remainingTimeDisplay(){return Math.floor(this.duration())-Math.floor(this.currentTime())}buffered(){let buffered=this.techGet_("buffered");return buffered&&buffered.length||(buffered=createTimeRanges$1(0,0)),buffered}seekable(){let seekable=this.techGet_("seekable");return seekable&&seekable.length||(seekable=createTimeRanges$1(0,0)),seekable}seeking(){return this.techGet_("seeking")}ended(){return this.techGet_("ended")}networkState(){return this.techGet_("networkState")}readyState(){return this.techGet_("readyState")}bufferedPercent(){return bufferedPercent(this.buffered(),this.duration())}bufferedEnd(){const buffered=this.buffered(),duration=this.duration();let end=buffered.end(buffered.length-1);return end>duration&&(end=duration),end}volume(percentAsDecimal){let vol;return void 0!==percentAsDecimal?(vol=Math.max(0,Math.min(1,percentAsDecimal)),this.cache_.volume=vol,this.techCall_("setVolume",vol),void(vol>0&&this.lastVolume_(vol))):(vol=parseFloat(this.techGet_("volume")),isNaN(vol)?1:vol)}muted(muted){if(void 0===muted)return this.techGet_("muted")||!1;this.techCall_("setMuted",muted)}defaultMuted(defaultMuted){return void 0!==defaultMuted&&this.techCall_("setDefaultMuted",defaultMuted),this.techGet_("defaultMuted")||!1}lastVolume_(percentAsDecimal){if(void 0===percentAsDecimal||0===percentAsDecimal)return this.cache_.lastVolume;this.cache_.lastVolume=percentAsDecimal}supportsFullScreen(){return this.techGet_("supportsFullScreen")||!1}isFullscreen(isFS){if(void 0!==isFS){const oldValue=this.isFullscreen_;return this.isFullscreen_=Boolean(isFS),this.isFullscreen_!==oldValue&&this.fsApi_.prefixed&&this.trigger("fullscreenchange"),void this.toggleFullscreenClass_()}return this.isFullscreen_}requestFullscreen(fullscreenOptions){this.isInPictureInPicture()&&this.exitPictureInPicture();const self=this;return new Promise(((resolve,reject)=>{function offHandler(){self.off("fullscreenerror",errorHandler),self.off("fullscreenchange",changeHandler)}function changeHandler(){offHandler(),resolve()}function errorHandler(e,err){offHandler(),reject(err)}self.one("fullscreenchange",changeHandler),self.one("fullscreenerror",errorHandler);const promise=self.requestFullscreenHelper_(fullscreenOptions);promise&&(promise.then(offHandler,offHandler),promise.then(resolve,reject))}))}requestFullscreenHelper_(fullscreenOptions){let fsOptions;if(this.fsApi_.prefixed||(fsOptions=this.options_.fullscreen&&this.options_.fullscreen.options||{},void 0!==fullscreenOptions&&(fsOptions=fullscreenOptions)),this.fsApi_.requestFullscreen){const promise=this.el_[this.fsApi_.requestFullscreen](fsOptions);return promise&&promise.then((()=>this.isFullscreen(!0)),(()=>this.isFullscreen(!1))),promise}this.tech_.supportsFullScreen()&&!0==!this.options_.preferFullWindow?this.techCall_("enterFullScreen"):this.enterFullWindow()}exitFullscreen(){const self=this;return new Promise(((resolve,reject)=>{function offHandler(){self.off("fullscreenerror",errorHandler),self.off("fullscreenchange",changeHandler)}function changeHandler(){offHandler(),resolve()}function errorHandler(e,err){offHandler(),reject(err)}self.one("fullscreenchange",changeHandler),self.one("fullscreenerror",errorHandler);const promise=self.exitFullscreenHelper_();promise&&(promise.then(offHandler,offHandler),promise.then(resolve,reject))}))}exitFullscreenHelper_(){if(this.fsApi_.requestFullscreen){const promise=document[this.fsApi_.exitFullscreen]();return promise&&silencePromise(promise.then((()=>this.isFullscreen(!1)))),promise}this.tech_.supportsFullScreen()&&!0==!this.options_.preferFullWindow?this.techCall_("exitFullScreen"):this.exitFullWindow()}enterFullWindow(){this.isFullscreen(!0),this.isFullWindow=!0,this.docOrigOverflow=document.documentElement.style.overflow,on(document,"keydown",this.boundFullWindowOnEscKey_),document.documentElement.style.overflow="hidden",addClass(document.body,"vjs-full-window"),this.trigger("enterFullWindow")}fullWindowOnEscKey(event){keycode.isEventKey(event,"Esc")&&!0===this.isFullscreen()&&(this.isFullWindow?this.exitFullWindow():this.exitFullscreen())}exitFullWindow(){this.isFullscreen(!1),this.isFullWindow=!1,off(document,"keydown",this.boundFullWindowOnEscKey_),document.documentElement.style.overflow=this.docOrigOverflow,removeClass(document.body,"vjs-full-window"),this.trigger("exitFullWindow")}disablePictureInPicture(value){if(void 0===value)return this.techGet_("disablePictureInPicture");this.techCall_("setDisablePictureInPicture",value),this.options_.disablePictureInPicture=value,this.trigger("disablepictureinpicturechanged")}isInPictureInPicture(isPiP){return void 0!==isPiP?(this.isInPictureInPicture_=!!isPiP,void this.togglePictureInPictureClass_()):!!this.isInPictureInPicture_}requestPictureInPicture(){if(this.options_.enableDocumentPictureInPicture&&window.documentPictureInPicture){const pipContainer=document.createElement(this.el().tagName);return pipContainer.classList=this.el().classList,pipContainer.classList.add("vjs-pip-container"),this.posterImage&&pipContainer.appendChild(this.posterImage.el().cloneNode(!0)),this.titleBar&&pipContainer.appendChild(this.titleBar.el().cloneNode(!0)),pipContainer.appendChild(createEl("p",{className:"vjs-pip-text"},{},this.localize("Playing in picture-in-picture"))),window.documentPictureInPicture.requestWindow({width:this.videoWidth(),height:this.videoHeight()}).then((pipWindow=>(copyStyleSheetsToWindow(pipWindow),this.el_.parentNode.insertBefore(pipContainer,this.el_),pipWindow.document.body.appendChild(this.el_),pipWindow.document.body.classList.add("vjs-pip-window"),this.player_.isInPictureInPicture(!0),this.player_.trigger("enterpictureinpicture"),pipWindow.addEventListener("pagehide",(event=>{const pipVideo=event.target.querySelector(".video-js");pipContainer.parentNode.replaceChild(pipVideo,pipContainer),this.player_.isInPictureInPicture(!1),this.player_.trigger("leavepictureinpicture")})),pipWindow)))}return"pictureInPictureEnabled"in document&&!1===this.disablePictureInPicture()?this.techGet_("requestPictureInPicture"):Promise.reject("No PiP mode is available")}exitPictureInPicture(){return window.documentPictureInPicture&&window.documentPictureInPicture.window?(window.documentPictureInPicture.window.close(),Promise.resolve()):"pictureInPictureEnabled"in document?document.exitPictureInPicture():void 0}handleKeyDown(event){const{userActions:userActions}=this.options_;if(!userActions||!userActions.hotkeys)return;(el=>{const tagName=el.tagName.toLowerCase();if(el.isContentEditable)return!0;if("input"===tagName)return-1===["button","checkbox","hidden","radio","reset","submit"].indexOf(el.type);return-1!==["textarea"].indexOf(tagName)})(this.el_.ownerDocument.activeElement)||("function"==typeof userActions.hotkeys?userActions.hotkeys.call(this,event):this.handleHotkeys(event))}handleHotkeys(event){const hotkeys=this.options_.userActions?this.options_.userActions.hotkeys:{},{fullscreenKey:fullscreenKey=(keydownEvent=>keycode.isEventKey(keydownEvent,"f")),muteKey:muteKey=(keydownEvent=>keycode.isEventKey(keydownEvent,"m")),playPauseKey:playPauseKey=(keydownEvent=>keycode.isEventKey(keydownEvent,"k")||keycode.isEventKey(keydownEvent,"Space"))}=hotkeys;if(fullscreenKey.call(this,event)){event.preventDefault(),event.stopPropagation();const FSToggle=Component$1.getComponent("FullscreenToggle");!1!==document[this.fsApi_.fullscreenEnabled]&&FSToggle.prototype.handleClick.call(this,event)}else if(muteKey.call(this,event)){event.preventDefault(),event.stopPropagation();Component$1.getComponent("MuteToggle").prototype.handleClick.call(this,event)}else if(playPauseKey.call(this,event)){event.preventDefault(),event.stopPropagation();Component$1.getComponent("PlayToggle").prototype.handleClick.call(this,event)}}canPlayType(type){let can;for(let i=0,j=this.options_.techOrder;i<j.length;i++){const techName=j[i];let tech=Tech.getTech(techName);if(tech||(tech=Component$1.getComponent(techName)),tech){if(tech.isSupported()&&(can=tech.canPlayType(type),can))return can}else log$1.error('The "'.concat(techName,'" tech is undefined. Skipped browser support check for that tech.'))}return""}selectSource(sources){const techs=this.options_.techOrder.map((techName=>[techName,Tech.getTech(techName)])).filter((_ref6=>{let[techName,tech]=_ref6;return tech?tech.isSupported():(log$1.error('The "'.concat(techName,'" tech is undefined. Skipped browser support check for that tech.')),!1)})),findFirstPassingTechSourcePair=function(outerArray,innerArray,tester){let found;return outerArray.some((outerChoice=>innerArray.some((innerChoice=>{if(found=tester(outerChoice,innerChoice),found)return!0})))),found};let foundSourceAndTech;const finder=(_ref7,source)=>{let[techName,tech]=_ref7;if(tech.canPlaySource(source,this.options_[techName.toLowerCase()]))return{source:source,tech:techName}};var fn;return foundSourceAndTech=this.options_.sourceOrder?findFirstPassingTechSourcePair(sources,techs,(fn=finder,(a,b)=>fn(b,a))):findFirstPassingTechSourcePair(techs,sources,finder),foundSourceAndTech||!1}handleSrc_(source,isRetry){if(void 0===source)return this.cache_.src||"";this.resetRetryOnError_&&this.resetRetryOnError_();const sources=filterSource(source);if(sources.length){if(this.changingSrc_=!0,isRetry||(this.cache_.sources=sources),this.updateSourceCaches_(sources[0]),setSource(this,sources[0],((middlewareSource,mws)=>{this.middleware_=mws,isRetry||(this.cache_.sources=sources),this.updateSourceCaches_(middlewareSource);if(this.src_(middlewareSource))return sources.length>1?this.handleSrc_(sources.slice(1)):(this.changingSrc_=!1,this.setTimeout((function(){this.error({code:4,message:this.options_.notSupportedMessage})}),0),void this.triggerReady());var middleware,tech;middleware=mws,tech=this.tech_,middleware.forEach((mw=>mw.setTech&&mw.setTech(tech)))})),sources.length>1){const retry=()=>{this.error(null),this.handleSrc_(sources.slice(1),!0)},stopListeningForErrors=()=>{this.off("error",retry)};this.one("error",retry),this.one("playing",stopListeningForErrors),this.resetRetryOnError_=()=>{this.off("error",retry),this.off("playing",stopListeningForErrors)}}}else this.setTimeout((function(){this.error({code:4,message:this.options_.notSupportedMessage})}),0)}src(source){return this.handleSrc_(source,!1)}src_(source){const sourceTech=this.selectSource([source]);return!sourceTech||(titleCaseEquals(sourceTech.tech,this.techName_)?(this.ready((function(){this.tech_.constructor.prototype.hasOwnProperty("setSource")?this.techCall_("setSource",source):this.techCall_("src",source.src),this.changingSrc_=!1}),!0),!1):(this.changingSrc_=!0,this.loadTech_(sourceTech.tech,sourceTech.source),this.tech_.ready((()=>{this.changingSrc_=!1})),!1))}load(){this.tech_&&this.tech_.vhs?this.src(this.currentSource()):this.techCall_("load")}reset(){if(this.paused())this.doReset_();else{silencePromise(this.play().then((()=>this.doReset_())))}}doReset_(){this.tech_&&this.tech_.clearTracks("text"),this.removeClass("vjs-playing"),this.addClass("vjs-paused"),this.resetCache_(),this.poster(""),this.loadTech_(this.options_.techOrder[0],null),this.techCall_("reset"),this.resetControlBarUI_(),this.error(null),this.titleBar&&this.titleBar.update({title:void 0,description:void 0}),isEvented(this)&&this.trigger("playerreset")}resetControlBarUI_(){this.resetProgressBar_(),this.resetPlaybackRate_(),this.resetVolumeBar_()}resetProgressBar_(){this.currentTime(0);const{currentTimeDisplay:currentTimeDisplay,durationDisplay:durationDisplay,progressControl:progressControl,remainingTimeDisplay:remainingTimeDisplay}=this.controlBar||{},{seekBar:seekBar}=progressControl||{};currentTimeDisplay&&currentTimeDisplay.updateContent(),durationDisplay&&durationDisplay.updateContent(),remainingTimeDisplay&&remainingTimeDisplay.updateContent(),seekBar&&(seekBar.update(),seekBar.loadProgressBar&&seekBar.loadProgressBar.update())}resetPlaybackRate_(){this.playbackRate(this.defaultPlaybackRate()),this.handleTechRateChange_()}resetVolumeBar_(){this.volume(1),this.trigger("volumechange")}currentSources(){const source=this.currentSource(),sources=[];return 0!==Object.keys(source).length&&sources.push(source),this.cache_.sources||sources}currentSource(){return this.cache_.source||{}}currentSrc(){return this.currentSource()&&this.currentSource().src||""}currentType(){return this.currentSource()&&this.currentSource().type||""}preload(value){return void 0!==value?(this.techCall_("setPreload",value),void(this.options_.preload=value)):this.techGet_("preload")}autoplay(value){if(void 0===value)return this.options_.autoplay||!1;let techAutoplay;"string"==typeof value&&/(any|play|muted)/.test(value)||!0===value&&this.options_.normalizeAutoplay?(this.options_.autoplay=value,this.manualAutoplay_("string"==typeof value?value:"play"),techAutoplay=!1):this.options_.autoplay=!!value,techAutoplay=void 0===techAutoplay?this.options_.autoplay:techAutoplay,this.tech_&&this.techCall_("setAutoplay",techAutoplay)}playsinline(value){return void 0!==value&&(this.techCall_("setPlaysinline",value),this.options_.playsinline=value),this.techGet_("playsinline")}loop(value){return void 0!==value?(this.techCall_("setLoop",value),void(this.options_.loop=value)):this.techGet_("loop")}poster(src){if(void 0===src)return this.poster_;src||(src=""),src!==this.poster_&&(this.poster_=src,this.techCall_("setPoster",src),this.isPosterFromTech_=!1,this.trigger("posterchange"))}handleTechPosterChange_(){if((!this.poster_||this.options_.techCanOverridePoster)&&this.tech_&&this.tech_.poster){const newPoster=this.tech_.poster()||"";newPoster!==this.poster_&&(this.poster_=newPoster,this.isPosterFromTech_=!0,this.trigger("posterchange"))}}controls(bool){if(void 0===bool)return!!this.controls_;bool=!!bool,this.controls_!==bool&&(this.controls_=bool,this.usingNativeControls()&&this.techCall_("setControls",bool),this.controls_?(this.removeClass("vjs-controls-disabled"),this.addClass("vjs-controls-enabled"),this.trigger("controlsenabled"),this.usingNativeControls()||this.addTechControlsListeners_()):(this.removeClass("vjs-controls-enabled"),this.addClass("vjs-controls-disabled"),this.trigger("controlsdisabled"),this.usingNativeControls()||this.removeTechControlsListeners_()))}usingNativeControls(bool){if(void 0===bool)return!!this.usingNativeControls_;bool=!!bool,this.usingNativeControls_!==bool&&(this.usingNativeControls_=bool,this.usingNativeControls_?(this.addClass("vjs-using-native-controls"),this.trigger("usingnativecontrols")):(this.removeClass("vjs-using-native-controls"),this.trigger("usingcustomcontrols")))}error(err){if(void 0===err)return this.error_||null;if(hooks("beforeerror").forEach((hookFunction=>{const newErr=hookFunction(this,err);isObject$1(newErr)&&!Array.isArray(newErr)||"string"==typeof newErr||"number"==typeof newErr||null===newErr?err=newErr:this.log.error("please return a value that MediaError expects in beforeerror hooks")})),this.options_.suppressNotSupportedError&&err&&4===err.code){const triggerSuppressedError=function(){this.error(err)};return this.options_.suppressNotSupportedError=!1,this.any(["click","touchstart"],triggerSuppressedError),void this.one("loadstart",(function(){this.off(["click","touchstart"],triggerSuppressedError)}))}if(null===err)return this.error_=null,this.removeClass("vjs-error"),void(this.errorDisplay&&this.errorDisplay.close());this.error_=new MediaError(err),this.addClass("vjs-error"),log$1.error("(CODE:".concat(this.error_.code," ").concat(MediaError.errorTypes[this.error_.code],")"),this.error_.message,this.error_),this.trigger("error"),hooks("error").forEach((hookFunction=>hookFunction(this,this.error_)))}reportUserActivity(event){this.userActivity_=!0}userActive(bool){if(void 0===bool)return this.userActive_;if((bool=!!bool)!==this.userActive_){if(this.userActive_=bool,this.userActive_)return this.userActivity_=!0,this.removeClass("vjs-user-inactive"),this.addClass("vjs-user-active"),void this.trigger("useractive");this.tech_&&this.tech_.one("mousemove",(function(e){e.stopPropagation(),e.preventDefault()})),this.userActivity_=!1,this.removeClass("vjs-user-active"),this.addClass("vjs-user-inactive"),this.trigger("userinactive")}}listenForUserActivity_(){let mouseInProgress,lastMoveX,lastMoveY;const handleActivity=bind_(this,this.reportUserActivity),handleMouseUpAndMouseLeave=function(event){handleActivity(),this.clearInterval(mouseInProgress)};this.on("mousedown",(function(){handleActivity(),this.clearInterval(mouseInProgress),mouseInProgress=this.setInterval(handleActivity,250)})),this.on("mousemove",(function(e){e.screenX===lastMoveX&&e.screenY===lastMoveY||(lastMoveX=e.screenX,lastMoveY=e.screenY,handleActivity())})),this.on("mouseup",handleMouseUpAndMouseLeave),this.on("mouseleave",handleMouseUpAndMouseLeave);const controlBar=this.getChild("controlBar");let inactivityTimeout;!controlBar||IS_IOS||IS_ANDROID||(controlBar.on("mouseenter",(function(event){0!==this.player().options_.inactivityTimeout&&(this.player().cache_.inactivityTimeout=this.player().options_.inactivityTimeout),this.player().options_.inactivityTimeout=0})),controlBar.on("mouseleave",(function(event){this.player().options_.inactivityTimeout=this.player().cache_.inactivityTimeout}))),this.on("keydown",handleActivity),this.on("keyup",handleActivity);this.setInterval((function(){if(!this.userActivity_)return;this.userActivity_=!1,this.userActive(!0),this.clearTimeout(inactivityTimeout);const timeout=this.options_.inactivityTimeout;timeout<=0||(inactivityTimeout=this.setTimeout((function(){this.userActivity_||this.userActive(!1)}),timeout))}),250)}playbackRate(rate){if(void 0===rate)return this.tech_&&this.tech_.featuresPlaybackRate?this.cache_.lastPlaybackRate||this.techGet_("playbackRate"):1;this.techCall_("setPlaybackRate",rate)}defaultPlaybackRate(rate){return void 0!==rate?this.techCall_("setDefaultPlaybackRate",rate):this.tech_&&this.tech_.featuresPlaybackRate?this.techGet_("defaultPlaybackRate"):1}isAudio(bool){if(void 0===bool)return!!this.isAudio_;this.isAudio_=!!bool}enableAudioOnlyUI_(){this.addClass("vjs-audio-only-mode");const playerChildren=this.children(),controlBar=this.getChild("ControlBar"),controlBarHeight=controlBar&&controlBar.currentHeight();playerChildren.forEach((child=>{child!==controlBar&&child.el_&&!child.hasClass("vjs-hidden")&&(child.hide(),this.audioOnlyCache_.hiddenChildren.push(child))})),this.audioOnlyCache_.playerHeight=this.currentHeight(),this.height(controlBarHeight),this.trigger("audioonlymodechange")}disableAudioOnlyUI_(){this.removeClass("vjs-audio-only-mode"),this.audioOnlyCache_.hiddenChildren.forEach((child=>child.show())),this.height(this.audioOnlyCache_.playerHeight),this.trigger("audioonlymodechange")}audioOnlyMode(value){if("boolean"!=typeof value||value===this.audioOnlyMode_)return this.audioOnlyMode_;if(this.audioOnlyMode_=value,value){const exitPromises=[];return this.isInPictureInPicture()&&exitPromises.push(this.exitPictureInPicture()),this.isFullscreen()&&exitPromises.push(this.exitFullscreen()),this.audioPosterMode()&&exitPromises.push(this.audioPosterMode(!1)),Promise.all(exitPromises).then((()=>this.enableAudioOnlyUI_()))}return Promise.resolve().then((()=>this.disableAudioOnlyUI_()))}enablePosterModeUI_(){(this.tech_&&this.tech_).hide(),this.addClass("vjs-audio-poster-mode"),this.trigger("audiopostermodechange")}disablePosterModeUI_(){(this.tech_&&this.tech_).show(),this.removeClass("vjs-audio-poster-mode"),this.trigger("audiopostermodechange")}audioPosterMode(value){if("boolean"!=typeof value||value===this.audioPosterMode_)return this.audioPosterMode_;if(this.audioPosterMode_=value,value){if(this.audioOnlyMode()){return this.audioOnlyMode(!1).then((()=>{this.enablePosterModeUI_()}))}return Promise.resolve().then((()=>{this.enablePosterModeUI_()}))}return Promise.resolve().then((()=>{this.disablePosterModeUI_()}))}addTextTrack(kind,label,language){if(this.tech_)return this.tech_.addTextTrack(kind,label,language)}addRemoteTextTrack(options,manualCleanup){if(this.tech_)return this.tech_.addRemoteTextTrack(options,manualCleanup)}removeRemoteTextTrack(){let obj=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},{track:track}=obj;if(track||(track=obj),this.tech_)return this.tech_.removeRemoteTextTrack(track)}getVideoPlaybackQuality(){return this.techGet_("getVideoPlaybackQuality")}videoWidth(){return this.tech_&&this.tech_.videoWidth&&this.tech_.videoWidth()||0}videoHeight(){return this.tech_&&this.tech_.videoHeight&&this.tech_.videoHeight()||0}language(code){if(void 0===code)return this.language_;this.language_!==String(code).toLowerCase()&&(this.language_=String(code).toLowerCase(),isEvented(this)&&this.trigger("languagechange"))}languages(){return merge$2(Player.prototype.options_.languages,this.languages_)}toJSON(){const options=merge$2(this.options_),tracks=options.tracks;options.tracks=[];for(let i=0;i<tracks.length;i++){let track=tracks[i];track=merge$2(track),track.player=void 0,options.tracks[i]=track}return options}createModal(content,options){(options=options||{}).content=content||"";const modal=new ModalDialog(this,options);return this.addChild(modal),modal.on("dispose",(()=>{this.removeChild(modal)})),modal.open(),modal}updateCurrentBreakpoint_(){if(!this.responsive())return;const currentBreakpoint=this.currentBreakpoint(),currentWidth=this.currentWidth();for(let i=0;i<BREAKPOINT_ORDER.length;i++){const candidateBreakpoint=BREAKPOINT_ORDER[i];if(currentWidth<=this.breakpoints_[candidateBreakpoint]){if(currentBreakpoint===candidateBreakpoint)return;currentBreakpoint&&this.removeClass(BREAKPOINT_CLASSES[currentBreakpoint]),this.addClass(BREAKPOINT_CLASSES[candidateBreakpoint]),this.breakpoint_=candidateBreakpoint;break}}}removeCurrentBreakpoint_(){const className=this.currentBreakpointClass();this.breakpoint_="",className&&this.removeClass(className)}breakpoints(breakpoints){return void 0===breakpoints||(this.breakpoint_="",this.breakpoints_=Object.assign({},DEFAULT_BREAKPOINTS,breakpoints),this.updateCurrentBreakpoint_()),Object.assign(this.breakpoints_)}responsive(value){if(void 0===value)return this.responsive_;return(value=Boolean(value))!==this.responsive_?(this.responsive_=value,value?(this.on("playerresize",this.boundUpdateCurrentBreakpoint_),this.updateCurrentBreakpoint_()):(this.off("playerresize",this.boundUpdateCurrentBreakpoint_),this.removeCurrentBreakpoint_()),value):void 0}currentBreakpoint(){return this.breakpoint_}currentBreakpointClass(){return BREAKPOINT_CLASSES[this.breakpoint_]||""}loadMedia(media,ready){if(!media||"object"!=typeof media)return;const crossOrigin=this.crossOrigin();this.reset(),this.cache_.media=merge$2(media);const{artist:artist,artwork:artwork,description:description,poster:poster,src:src,textTracks:textTracks,title:title}=this.cache_.media;!artwork&&poster&&(this.cache_.media.artwork=[{src:poster,type:getMimetype(poster)}]),crossOrigin&&this.crossOrigin(crossOrigin),src&&this.src(src),poster&&this.poster(poster),Array.isArray(textTracks)&&textTracks.forEach((tt=>this.addRemoteTextTrack(tt,!1))),this.titleBar&&this.titleBar.update({title:title,description:description||artist||""}),this.ready(ready)}getMedia(){if(!this.cache_.media){const poster=this.poster(),media={src:this.currentSources(),textTracks:Array.prototype.map.call(this.remoteTextTracks(),(tt=>({kind:tt.kind,label:tt.label,language:tt.language,src:tt.src})))};return poster&&(media.poster=poster,media.artwork=[{src:media.poster,type:getMimetype(media.poster)}]),media}return merge$2(this.cache_.media)}static getTagSettings(tag){const baseOptions={sources:[],tracks:[]},tagOptions=getAttributes(tag),dataSetup=tagOptions["data-setup"];if(hasClass(tag,"vjs-fill")&&(tagOptions.fill=!0),hasClass(tag,"vjs-fluid")&&(tagOptions.fluid=!0),null!==dataSetup){const[err,data]=tuple(dataSetup||"{}");err&&log$1.error(err),Object.assign(tagOptions,data)}if(Object.assign(baseOptions,tagOptions),tag.hasChildNodes()){const children=tag.childNodes;for(let i=0,j=children.length;i<j;i++){const child=children[i],childName=child.nodeName.toLowerCase();"source"===childName?baseOptions.sources.push(getAttributes(child)):"track"===childName&&baseOptions.tracks.push(getAttributes(child))}}return baseOptions}debug(enabled){if(void 0===enabled)return this.debugEnabled_;enabled?(this.trigger("debugon"),this.previousLogLevel_=this.log.level,this.log.level("debug"),this.debugEnabled_=!0):(this.trigger("debugoff"),this.log.level(this.previousLogLevel_),this.previousLogLevel_=void 0,this.debugEnabled_=!1)}playbackRates(newRates){if(void 0===newRates)return this.cache_.playbackRates;Array.isArray(newRates)&&newRates.every((rate=>"number"==typeof rate))&&(this.cache_.playbackRates=newRates,this.trigger("playbackrateschange"))}}ALL.names.forEach((function(name){const props=ALL[name];Player.prototype[props.getterName]=function(){return this.tech_?this.tech_[props.getterName]():(this[props.privateName]=this[props.privateName]||new props.ListClass,this[props.privateName])}})),Player.prototype.crossorigin=Player.prototype.crossOrigin,Player.players={};const navigator=window.navigator;Player.prototype.options_={techOrder:Tech.defaultTechOrder_,html5:{},enableSourceset:!0,inactivityTimeout:2e3,playbackRates:[],liveui:!1,children:["mediaLoader","posterImage","titleBar","textTrackDisplay","loadingSpinner","bigPlayButton","liveTracker","controlBar","errorDisplay","textTrackSettings","resizeManager"],language:navigator&&(navigator.languages&&navigator.languages[0]||navigator.userLanguage||navigator.language)||"en",languages:{},notSupportedMessage:"No compatible source was found for this media.",normalizeAutoplay:!1,fullscreen:{options:{navigationUI:"hide"}},breakpoints:{},responsive:!1,audioOnlyMode:!1,audioPosterMode:!1,enableSmoothSeeking:!1},TECH_EVENTS_RETRIGGER.forEach((function(event){Player.prototype["handleTech".concat(toTitleCase$1(event),"_")]=function(){return this.trigger(event)}})),Component$1.registerComponent("Player",Player);const pluginStorage={},pluginExists=name=>pluginStorage.hasOwnProperty(name),getPlugin=name=>pluginExists(name)?pluginStorage[name]:void 0,markPluginAsActive=(player,name)=>{player.activePlugins_=player.activePlugins_||{},player.activePlugins_[name]=!0},triggerSetupEvent=(player,hash,before)=>{const eventName=(before?"before":"")+"pluginsetup";player.trigger(eventName,hash),player.trigger(eventName+":"+hash.name,hash)},createPluginFactory=(name,PluginSubClass)=>(PluginSubClass.prototype.name=name,function(){triggerSetupEvent(this,{name:name,plugin:PluginSubClass,instance:null},!0);for(var _len21=arguments.length,args=new Array(_len21),_key21=0;_key21<_len21;_key21++)args[_key21]=arguments[_key21];const instance=new PluginSubClass(...[this,...args]);return this[name]=()=>instance,triggerSetupEvent(this,instance.getEventHash()),instance});class Plugin{constructor(player){if(this.constructor===Plugin)throw new Error("Plugin must be sub-classed; not directly instantiated.");this.player=player,this.log||(this.log=this.player.log.createLogger(this.name)),evented(this),delete this.trigger,stateful(this,this.constructor.defaultState),markPluginAsActive(player,this.name),this.dispose=this.dispose.bind(this),player.on("dispose",this.dispose)}version(){return this.constructor.VERSION}getEventHash(){let hash=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};return hash.name=this.name,hash.plugin=this.constructor,hash.instance=this,hash}trigger(event){let hash=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};return trigger(this.eventBusEl_,event,this.getEventHash(hash))}handleStateChanged(e){}dispose(){const{name:name,player:player}=this;this.trigger("dispose"),this.off(),player.off("dispose",this.dispose),player.activePlugins_[name]=!1,this.player=this.state=null,player[name]=createPluginFactory(name,pluginStorage[name])}static isBasic(plugin){const p="string"==typeof plugin?getPlugin(plugin):plugin;return"function"==typeof p&&!Plugin.prototype.isPrototypeOf(p.prototype)}static registerPlugin(name,plugin){if("string"!=typeof name)throw new Error('Illegal plugin name, "'.concat(name,'", must be a string, was ').concat(typeof name,"."));if(pluginExists(name))log$1.warn('A plugin named "'.concat(name,'" already exists. You may want to avoid re-registering plugins!'));else if(Player.prototype.hasOwnProperty(name))throw new Error('Illegal plugin name, "'.concat(name,'", cannot share a name with an existing player method!'));if("function"!=typeof plugin)throw new Error('Illegal plugin for "'.concat(name,'", must be a function, was ').concat(typeof plugin,"."));return pluginStorage[name]=plugin,"plugin"!==name&&(Plugin.isBasic(plugin)?Player.prototype[name]=function(name,plugin){const basicPluginWrapper=function(){triggerSetupEvent(this,{name:name,plugin:plugin,instance:null},!0);const instance=plugin.apply(this,arguments);return markPluginAsActive(this,name),triggerSetupEvent(this,{name:name,plugin:plugin,instance:instance}),instance};return Object.keys(plugin).forEach((function(prop){basicPluginWrapper[prop]=plugin[prop]})),basicPluginWrapper}(name,plugin):Player.prototype[name]=createPluginFactory(name,plugin)),plugin}static deregisterPlugin(name){if("plugin"===name)throw new Error("Cannot de-register base plugin.");pluginExists(name)&&(delete pluginStorage[name],delete Player.prototype[name])}static getPlugins(){let result;return(arguments.length>0&&void 0!==arguments[0]?arguments[0]:Object.keys(pluginStorage)).forEach((name=>{const plugin=getPlugin(name);plugin&&(result=result||{},result[name]=plugin)})),result}static getPluginVersion(name){const plugin=getPlugin(name);return plugin&&plugin.VERSION||""}}function deprecateForMajor(major,oldName,newName,fn){return function(message,fn){let warned=!1;return function(){warned||log$1.warn(message),warned=!0;for(var _len22=arguments.length,args=new Array(_len22),_key22=0;_key22<_len22;_key22++)args[_key22]=arguments[_key22];return fn.apply(this,args)}}("".concat(oldName," is deprecated and will be removed in ").concat(major,".0; please use ").concat(newName," instead."),fn)}Plugin.getPlugin=getPlugin,Plugin.BASE_PLUGIN_NAME="plugin",Plugin.registerPlugin("plugin",Plugin),Player.prototype.usingPlugin=function(name){return!!this.activePlugins_&&!0===this.activePlugins_[name]},Player.prototype.hasPlugin=function(name){return!!pluginExists(name)};const normalizeId=id=>0===id.indexOf("#")?id.slice(1):id;function videojs(id,options,ready){let player=videojs.getPlayer(id);if(player)return options&&log$1.warn('Player "'.concat(id,'" is already initialised. Options will not be applied.')),ready&&player.ready(ready),player;const el="string"==typeof id?$("#"+normalizeId(id)):id;if(!isEl(el))throw new TypeError("The element or ID supplied is not valid. (videojs)");const rootNode="getRootNode"in el&&el.getRootNode()instanceof window.ShadowRoot?el.getRootNode():el.ownerDocument.body;el.ownerDocument.defaultView&&rootNode.contains(el)||log$1.warn("The element supplied is not included in the DOM"),!0===(options=options||{}).restoreEl&&(options.restoreEl=(el.parentNode&&el.parentNode.hasAttribute("data-vjs-player")?el.parentNode:el).cloneNode(!0)),hooks("beforesetup").forEach((hookFunction=>{const opts=hookFunction(el,merge$2(options));isObject$1(opts)&&!Array.isArray(opts)?options=merge$2(options,opts):log$1.error("please return an object in beforesetup hooks")}));const PlayerComponent=Component$1.getComponent("Player");return player=new PlayerComponent(el,options,ready),hooks("setup").forEach((hookFunction=>hookFunction(player))),player}if(videojs.hooks_=hooks_,videojs.hooks=hooks,videojs.hook=function(type,fn){hooks(type,fn)},videojs.hookOnce=function(type,fn){hooks(type,[].concat(fn).map((original=>{const wrapper=function(){return removeHook(type,wrapper),original(...arguments)};return wrapper})))},videojs.removeHook=removeHook,!0!==window.VIDEOJS_NO_DYNAMIC_STYLE&&isReal()){let style=$(".vjs-styles-defaults");if(!style){style=createStyleElement("vjs-styles-defaults");const head=$("head");head&&head.insertBefore(style,head.firstChild),setTextContent(style,"\n      .video-js {\n        width: 300px;\n        height: 150px;\n      }\n\n      .vjs-fluid:not(.vjs-audio-only-mode) {\n        padding-top: 56.25%\n      }\n    ")}}autoSetupTimeout(1,videojs),videojs.VERSION="8.10.0",videojs.options=Player.prototype.options_,videojs.getPlayers=()=>Player.players,videojs.getPlayer=id=>{const players=Player.players;let tag;if("string"==typeof id){const nId=normalizeId(id),player=players[nId];if(player)return player;tag=$("#"+nId)}else tag=id;if(isEl(tag)){const{player:player,playerId:playerId}=tag;if(player||players[playerId])return player||players[playerId]}},videojs.getAllPlayers=()=>Object.keys(Player.players).map((k=>Player.players[k])).filter(Boolean),videojs.players=Player.players,videojs.getComponent=Component$1.getComponent,videojs.registerComponent=(name,comp)=>(Tech.isTech(comp)&&log$1.warn("The ".concat(name," tech was registered as a component. It should instead be registered using videojs.registerTech(name, tech)")),Component$1.registerComponent.call(Component$1,name,comp)),videojs.getTech=Tech.getTech,videojs.registerTech=Tech.registerTech,videojs.use=function(type,middleware){middlewares[type]=middlewares[type]||[],middlewares[type].push(middleware)},Object.defineProperty(videojs,"middleware",{value:{},writeable:!1,enumerable:!0}),Object.defineProperty(videojs.middleware,"TERMINATOR",{value:TERMINATOR,writeable:!1,enumerable:!0}),videojs.browser=browser,videojs.obj=Obj,videojs.mergeOptions=deprecateForMajor(9,"videojs.mergeOptions","videojs.obj.merge",merge$2),videojs.defineLazyProperty=deprecateForMajor(9,"videojs.defineLazyProperty","videojs.obj.defineLazyProperty",defineLazyProperty),videojs.bind=deprecateForMajor(9,"videojs.bind","native Function.prototype.bind",bind_),videojs.registerPlugin=Plugin.registerPlugin,videojs.deregisterPlugin=Plugin.deregisterPlugin,videojs.plugin=(name,plugin)=>(log$1.warn("videojs.plugin() is deprecated; use videojs.registerPlugin() instead"),Plugin.registerPlugin(name,plugin)),videojs.getPlugins=Plugin.getPlugins,videojs.getPlugin=Plugin.getPlugin,videojs.getPluginVersion=Plugin.getPluginVersion,videojs.addLanguage=function(code,data){return code=(""+code).toLowerCase(),videojs.options.languages=merge$2(videojs.options.languages,{[code]:data}),videojs.options.languages[code]},videojs.log=log$1,videojs.createLogger=createLogger,videojs.time=Time,videojs.createTimeRange=deprecateForMajor(9,"videojs.createTimeRange","videojs.time.createTimeRanges",createTimeRanges$1),videojs.createTimeRanges=deprecateForMajor(9,"videojs.createTimeRanges","videojs.time.createTimeRanges",createTimeRanges$1),videojs.formatTime=deprecateForMajor(9,"videojs.formatTime","videojs.time.formatTime",formatTime),videojs.setFormatTime=deprecateForMajor(9,"videojs.setFormatTime","videojs.time.setFormatTime",setFormatTime),videojs.resetFormatTime=deprecateForMajor(9,"videojs.resetFormatTime","videojs.time.resetFormatTime",resetFormatTime),videojs.parseUrl=deprecateForMajor(9,"videojs.parseUrl","videojs.url.parseUrl",parseUrl),videojs.isCrossOrigin=deprecateForMajor(9,"videojs.isCrossOrigin","videojs.url.isCrossOrigin",isCrossOrigin),videojs.EventTarget=EventTarget$2,videojs.any=any,videojs.on=on,videojs.one=one,videojs.off=off,videojs.trigger=trigger,videojs.xhr=lib,videojs.TextTrack=TextTrack,videojs.AudioTrack=AudioTrack,videojs.VideoTrack=VideoTrack,["isEl","isTextNode","createEl","hasClass","addClass","removeClass","toggleClass","setAttributes","getAttributes","emptyEl","appendContent","insertContent"].forEach((k=>{videojs[k]=function(){return log$1.warn("videojs.".concat(k,"() is deprecated; use videojs.dom.").concat(k,"() instead")),Dom[k].apply(null,arguments)}})),videojs.computedStyle=deprecateForMajor(9,"videojs.computedStyle","videojs.dom.computedStyle",computedStyle),videojs.dom=Dom,videojs.fn=Fn,videojs.num=Num,videojs.str=Str,videojs.url=Url,createCommonjsModule((function(module,exports){
+/*! @name videojs-contrib-quality-levels @version 4.0.0 @license Apache-2.0 */
+module.exports=function(videojs){function _interopDefaultLegacy(e){return e&&"object"==typeof e&&"default"in e?e:{default:e}}var videojs__default=_interopDefaultLegacy(videojs);class QualityLevel{constructor(representation){let level=this;return level.id=representation.id,level.label=level.id,level.width=representation.width,level.height=representation.height,level.bitrate=representation.bandwidth,level.frameRate=representation.frameRate,level.enabled_=representation.enabled,Object.defineProperty(level,"enabled",{get:()=>level.enabled_(),set(enable){level.enabled_(enable)}}),level}}class QualityLevelList extends videojs__default.default.EventTarget{constructor(){super();let list=this;return list.levels_=[],list.selectedIndex_=-1,Object.defineProperty(list,"selectedIndex",{get:()=>list.selectedIndex_}),Object.defineProperty(list,"length",{get:()=>list.levels_.length}),list[Symbol.iterator]=()=>list.levels_.values(),list}addQualityLevel(representation){let qualityLevel=this.getQualityLevelById(representation.id);if(qualityLevel)return qualityLevel;const index=this.levels_.length;return qualityLevel=new QualityLevel(representation),""+index in this||Object.defineProperty(this,index,{get(){return this.levels_[index]}}),this.levels_.push(qualityLevel),this.trigger({qualityLevel:qualityLevel,type:"addqualitylevel"}),qualityLevel}removeQualityLevel(qualityLevel){let removed=null;for(let i=0,l=this.length;i<l;i++)if(this[i]===qualityLevel){removed=this.levels_.splice(i,1)[0],this.selectedIndex_===i?this.selectedIndex_=-1:this.selectedIndex_>i&&this.selectedIndex_--;break}return removed&&this.trigger({qualityLevel:qualityLevel,type:"removequalitylevel"}),removed}getQualityLevelById(id){for(let i=0,l=this.length;i<l;i++){const level=this[i];if(level.id===id)return level}return null}dispose(){this.selectedIndex_=-1,this.levels_.length=0}}QualityLevelList.prototype.allowedEvents_={change:"change",addqualitylevel:"addqualitylevel",removequalitylevel:"removequalitylevel"};for(const event in QualityLevelList.prototype.allowedEvents_)QualityLevelList.prototype["on"+event]=null;var version="4.0.0";const initPlugin=function(player,options){const originalPluginFn=player.qualityLevels,qualityLevelList=new QualityLevelList,disposeHandler=function(){qualityLevelList.dispose(),player.qualityLevels=originalPluginFn,player.off("dispose",disposeHandler)};return player.on("dispose",disposeHandler),player.qualityLevels=()=>qualityLevelList,player.qualityLevels.VERSION=version,qualityLevelList},qualityLevels=function(options){return initPlugin(this,videojs__default.default.obj.merge({},options))};return videojs__default.default.registerPlugin("qualityLevels",qualityLevels),qualityLevels.VERSION=version,qualityLevels}(videojs)}));var urlToolkit=createCommonjsModule((function(module,exports){var URL_REGEX,FIRST_SEGMENT_REGEX,SLASH_DOT_REGEX,SLASH_DOT_DOT_REGEX,URLToolkit;URL_REGEX=/^(?=((?:[a-zA-Z0-9+\-.]+:)?))\1(?=((?:\/\/[^\/?#]*)?))\2(?=((?:(?:[^?#\/]*\/)*[^;?#\/]*)?))\3((?:;[^?#]*)?)(\?[^#]*)?(#[^]*)?$/,FIRST_SEGMENT_REGEX=/^(?=([^\/?#]*))\1([^]*)$/,SLASH_DOT_REGEX=/(?:\/|^)\.(?=\/)/g,SLASH_DOT_DOT_REGEX=/(?:\/|^)\.\.\/(?!\.\.\/)[^\/]*(?=\/)/g,URLToolkit={buildAbsoluteURL:function(baseURL,relativeURL,opts){if(opts=opts||{},baseURL=baseURL.trim(),!(relativeURL=relativeURL.trim())){if(!opts.alwaysNormalize)return baseURL;var basePartsForNormalise=URLToolkit.parseURL(baseURL);if(!basePartsForNormalise)throw new Error("Error trying to parse base URL.");return basePartsForNormalise.path=URLToolkit.normalizePath(basePartsForNormalise.path),URLToolkit.buildURLFromParts(basePartsForNormalise)}var relativeParts=URLToolkit.parseURL(relativeURL);if(!relativeParts)throw new Error("Error trying to parse relative URL.");if(relativeParts.scheme)return opts.alwaysNormalize?(relativeParts.path=URLToolkit.normalizePath(relativeParts.path),URLToolkit.buildURLFromParts(relativeParts)):relativeURL;var baseParts=URLToolkit.parseURL(baseURL);if(!baseParts)throw new Error("Error trying to parse base URL.");if(!baseParts.netLoc&&baseParts.path&&"/"!==baseParts.path[0]){var pathParts=FIRST_SEGMENT_REGEX.exec(baseParts.path);baseParts.netLoc=pathParts[1],baseParts.path=pathParts[2]}baseParts.netLoc&&!baseParts.path&&(baseParts.path="/");var builtParts={scheme:baseParts.scheme,netLoc:relativeParts.netLoc,path:null,params:relativeParts.params,query:relativeParts.query,fragment:relativeParts.fragment};if(!relativeParts.netLoc&&(builtParts.netLoc=baseParts.netLoc,"/"!==relativeParts.path[0]))if(relativeParts.path){var baseURLPath=baseParts.path,newPath=baseURLPath.substring(0,baseURLPath.lastIndexOf("/")+1)+relativeParts.path;builtParts.path=URLToolkit.normalizePath(newPath)}else builtParts.path=baseParts.path,relativeParts.params||(builtParts.params=baseParts.params,relativeParts.query||(builtParts.query=baseParts.query));return null===builtParts.path&&(builtParts.path=opts.alwaysNormalize?URLToolkit.normalizePath(relativeParts.path):relativeParts.path),URLToolkit.buildURLFromParts(builtParts)},parseURL:function(url){var parts=URL_REGEX.exec(url);return parts?{scheme:parts[1]||"",netLoc:parts[2]||"",path:parts[3]||"",params:parts[4]||"",query:parts[5]||"",fragment:parts[6]||""}:null},normalizePath:function(path){for(path=path.split("").reverse().join("").replace(SLASH_DOT_REGEX,"");path.length!==(path=path.replace(SLASH_DOT_DOT_REGEX,"")).length;);return path.split("").reverse().join("")},buildURLFromParts:function(parts){return parts.scheme+parts.netLoc+parts.path+parts.params+parts.query+parts.fragment}},module.exports=URLToolkit})),resolveUrl$1=function(baseUrl,relativeUrl){if(/^[a-z]+:/i.test(relativeUrl))return relativeUrl;/^data:/.test(baseUrl)&&(baseUrl=window.location&&window.location.href||"");var nativeURL="function"==typeof window.URL,protocolLess=/^\/\//.test(baseUrl),removeLocation=!window.location&&!/\/\//i.test(baseUrl);if(nativeURL?baseUrl=new window.URL(baseUrl,window.location||"http://example.com"):/\/\//i.test(baseUrl)||(baseUrl=urlToolkit.buildAbsoluteURL(window.location&&window.location.href||"",baseUrl)),nativeURL){var newUrl=new URL(relativeUrl,baseUrl);return removeLocation?newUrl.href.slice("http://example.com".length):protocolLess?newUrl.href.slice(newUrl.protocol.length):newUrl.href}return urlToolkit.buildAbsoluteURL(baseUrl,relativeUrl)},Stream=function(){function Stream(){this.listeners={}}var _proto=Stream.prototype;return _proto.on=function(type,listener){this.listeners[type]||(this.listeners[type]=[]),this.listeners[type].push(listener)},_proto.off=function(type,listener){if(!this.listeners[type])return!1;var index=this.listeners[type].indexOf(listener);return this.listeners[type]=this.listeners[type].slice(0),this.listeners[type].splice(index,1),index>-1},_proto.trigger=function(type){var callbacks=this.listeners[type];if(callbacks)if(2===arguments.length)for(var length=callbacks.length,i=0;i<length;++i)callbacks[i].call(this,arguments[1]);else for(var args=Array.prototype.slice.call(arguments,1),_length=callbacks.length,_i=0;_i<_length;++_i)callbacks[_i].apply(this,args)},_proto.dispose=function(){this.listeners={}},_proto.pipe=function(destination){this.on("data",(function(data){destination.push(data)}))},Stream}();function decodeB64ToUint8Array$1(b64Text){for(var s,decodedString=(s=b64Text,window.atob?window.atob(s):Buffer.from(s,"base64").toString("binary")),array=new Uint8Array(decodedString.length),i=0;i<decodedString.length;i++)array[i]=decodedString.charCodeAt(i);return array}
+/*! @name m3u8-parser @version 7.1.0 @license Apache-2.0 */class LineStream extends Stream{constructor(){super(),this.buffer=""}push(data){let nextNewline;for(this.buffer+=data,nextNewline=this.buffer.indexOf("\n");nextNewline>-1;nextNewline=this.buffer.indexOf("\n"))this.trigger("data",this.buffer.substring(0,nextNewline)),this.buffer=this.buffer.substring(nextNewline+1)}}const TAB=String.fromCharCode(9),parseByterange=function(byterangeString){const match=/([0-9.]*)?@?([0-9.]*)?/.exec(byterangeString||""),result={};return match[1]&&(result.length=parseInt(match[1],10)),match[2]&&(result.offset=parseInt(match[2],10)),result},parseAttributes$1=function(attributes){const result={};if(!attributes)return result;const attrs=attributes.split(new RegExp('(?:^|,)((?:[^=]*)=(?:"[^"]*"|[^,]*))'));let attr,i=attrs.length;for(;i--;)""!==attrs[i]&&(attr=/([^=]*)=(.*)/.exec(attrs[i]).slice(1),attr[0]=attr[0].replace(/^\s+|\s+$/g,""),attr[1]=attr[1].replace(/^\s+|\s+$/g,""),attr[1]=attr[1].replace(/^['"](.*)['"]$/g,"$1"),result[attr[0]]=attr[1]);return result};class ParseStream extends Stream{constructor(){super(),this.customParsers=[],this.tagMappers=[]}push(line){let match,event;if(0===(line=line.trim()).length)return;if("#"!==line[0])return void this.trigger("data",{type:"uri",uri:line});this.tagMappers.reduce(((acc,mapper)=>{const mappedLine=mapper(line);return mappedLine===line?acc:acc.concat([mappedLine])}),[line]).forEach((newLine=>{for(let i=0;i<this.customParsers.length;i++)if(this.customParsers[i].call(this,newLine))return;if(0===newLine.indexOf("#EXT"))if(newLine=newLine.replace("\r",""),match=/^#EXTM3U/.exec(newLine),match)this.trigger("data",{type:"tag",tagType:"m3u"});else{if(match=/^#EXTINF:([0-9\.]*)?,?(.*)?$/.exec(newLine),match)return event={type:"tag",tagType:"inf"},match[1]&&(event.duration=parseFloat(match[1])),match[2]&&(event.title=match[2]),void this.trigger("data",event);if(match=/^#EXT-X-TARGETDURATION:([0-9.]*)?/.exec(newLine),match)return event={type:"tag",tagType:"targetduration"},match[1]&&(event.duration=parseInt(match[1],10)),void this.trigger("data",event);if(match=/^#EXT-X-VERSION:([0-9.]*)?/.exec(newLine),match)return event={type:"tag",tagType:"version"},match[1]&&(event.version=parseInt(match[1],10)),void this.trigger("data",event);if(match=/^#EXT-X-MEDIA-SEQUENCE:(\-?[0-9.]*)?/.exec(newLine),match)return event={type:"tag",tagType:"media-sequence"},match[1]&&(event.number=parseInt(match[1],10)),void this.trigger("data",event);if(match=/^#EXT-X-DISCONTINUITY-SEQUENCE:(\-?[0-9.]*)?/.exec(newLine),match)return event={type:"tag",tagType:"discontinuity-sequence"},match[1]&&(event.number=parseInt(match[1],10)),void this.trigger("data",event);if(match=/^#EXT-X-PLAYLIST-TYPE:(.*)?$/.exec(newLine),match)return event={type:"tag",tagType:"playlist-type"},match[1]&&(event.playlistType=match[1]),void this.trigger("data",event);if(match=/^#EXT-X-BYTERANGE:(.*)?$/.exec(newLine),match)return event=_extends$1(parseByterange(match[1]),{type:"tag",tagType:"byterange"}),void this.trigger("data",event);if(match=/^#EXT-X-ALLOW-CACHE:(YES|NO)?/.exec(newLine),match)return event={type:"tag",tagType:"allow-cache"},match[1]&&(event.allowed=!/NO/.test(match[1])),void this.trigger("data",event);if(match=/^#EXT-X-MAP:(.*)$/.exec(newLine),match){if(event={type:"tag",tagType:"map"},match[1]){const attributes=parseAttributes$1(match[1]);attributes.URI&&(event.uri=attributes.URI),attributes.BYTERANGE&&(event.byterange=parseByterange(attributes.BYTERANGE))}this.trigger("data",event)}else if(match=/^#EXT-X-STREAM-INF:(.*)$/.exec(newLine),match){if(event={type:"tag",tagType:"stream-inf"},match[1]){if(event.attributes=parseAttributes$1(match[1]),event.attributes.RESOLUTION){const split=event.attributes.RESOLUTION.split("x"),resolution={};split[0]&&(resolution.width=parseInt(split[0],10)),split[1]&&(resolution.height=parseInt(split[1],10)),event.attributes.RESOLUTION=resolution}event.attributes.BANDWIDTH&&(event.attributes.BANDWIDTH=parseInt(event.attributes.BANDWIDTH,10)),event.attributes["FRAME-RATE"]&&(event.attributes["FRAME-RATE"]=parseFloat(event.attributes["FRAME-RATE"])),event.attributes["PROGRAM-ID"]&&(event.attributes["PROGRAM-ID"]=parseInt(event.attributes["PROGRAM-ID"],10))}this.trigger("data",event)}else{if(match=/^#EXT-X-MEDIA:(.*)$/.exec(newLine),match)return event={type:"tag",tagType:"media"},match[1]&&(event.attributes=parseAttributes$1(match[1])),void this.trigger("data",event);if(match=/^#EXT-X-ENDLIST/.exec(newLine),match)this.trigger("data",{type:"tag",tagType:"endlist"});else if(match=/^#EXT-X-DISCONTINUITY/.exec(newLine),match)this.trigger("data",{type:"tag",tagType:"discontinuity"});else{if(match=/^#EXT-X-PROGRAM-DATE-TIME:(.*)$/.exec(newLine),match)return event={type:"tag",tagType:"program-date-time"},match[1]&&(event.dateTimeString=match[1],event.dateTimeObject=new Date(match[1])),void this.trigger("data",event);if(match=/^#EXT-X-KEY:(.*)$/.exec(newLine),match)return event={type:"tag",tagType:"key"},match[1]&&(event.attributes=parseAttributes$1(match[1]),event.attributes.IV&&("0x"===event.attributes.IV.substring(0,2).toLowerCase()&&(event.attributes.IV=event.attributes.IV.substring(2)),event.attributes.IV=event.attributes.IV.match(/.{8}/g),event.attributes.IV[0]=parseInt(event.attributes.IV[0],16),event.attributes.IV[1]=parseInt(event.attributes.IV[1],16),event.attributes.IV[2]=parseInt(event.attributes.IV[2],16),event.attributes.IV[3]=parseInt(event.attributes.IV[3],16),event.attributes.IV=new Uint32Array(event.attributes.IV))),void this.trigger("data",event);if(match=/^#EXT-X-START:(.*)$/.exec(newLine),match)return event={type:"tag",tagType:"start"},match[1]&&(event.attributes=parseAttributes$1(match[1]),event.attributes["TIME-OFFSET"]=parseFloat(event.attributes["TIME-OFFSET"]),event.attributes.PRECISE=/YES/.test(event.attributes.PRECISE)),void this.trigger("data",event);if(match=/^#EXT-X-CUE-OUT-CONT:(.*)?$/.exec(newLine),match)return event={type:"tag",tagType:"cue-out-cont"},match[1]?event.data=match[1]:event.data="",void this.trigger("data",event);if(match=/^#EXT-X-CUE-OUT:(.*)?$/.exec(newLine),match)return event={type:"tag",tagType:"cue-out"},match[1]?event.data=match[1]:event.data="",void this.trigger("data",event);if(match=/^#EXT-X-CUE-IN:(.*)?$/.exec(newLine),match)return event={type:"tag",tagType:"cue-in"},match[1]?event.data=match[1]:event.data="",void this.trigger("data",event);if(match=/^#EXT-X-SKIP:(.*)$/.exec(newLine),match&&match[1])return event={type:"tag",tagType:"skip"},event.attributes=parseAttributes$1(match[1]),event.attributes.hasOwnProperty("SKIPPED-SEGMENTS")&&(event.attributes["SKIPPED-SEGMENTS"]=parseInt(event.attributes["SKIPPED-SEGMENTS"],10)),event.attributes.hasOwnProperty("RECENTLY-REMOVED-DATERANGES")&&(event.attributes["RECENTLY-REMOVED-DATERANGES"]=event.attributes["RECENTLY-REMOVED-DATERANGES"].split(TAB)),void this.trigger("data",event);if(match=/^#EXT-X-PART:(.*)$/.exec(newLine),match&&match[1])return event={type:"tag",tagType:"part"},event.attributes=parseAttributes$1(match[1]),["DURATION"].forEach((function(key){event.attributes.hasOwnProperty(key)&&(event.attributes[key]=parseFloat(event.attributes[key]))})),["INDEPENDENT","GAP"].forEach((function(key){event.attributes.hasOwnProperty(key)&&(event.attributes[key]=/YES/.test(event.attributes[key]))})),event.attributes.hasOwnProperty("BYTERANGE")&&(event.attributes.byterange=parseByterange(event.attributes.BYTERANGE)),void this.trigger("data",event);if(match=/^#EXT-X-SERVER-CONTROL:(.*)$/.exec(newLine),match&&match[1])return event={type:"tag",tagType:"server-control"},event.attributes=parseAttributes$1(match[1]),["CAN-SKIP-UNTIL","PART-HOLD-BACK","HOLD-BACK"].forEach((function(key){event.attributes.hasOwnProperty(key)&&(event.attributes[key]=parseFloat(event.attributes[key]))})),["CAN-SKIP-DATERANGES","CAN-BLOCK-RELOAD"].forEach((function(key){event.attributes.hasOwnProperty(key)&&(event.attributes[key]=/YES/.test(event.attributes[key]))})),void this.trigger("data",event);if(match=/^#EXT-X-PART-INF:(.*)$/.exec(newLine),match&&match[1])return event={type:"tag",tagType:"part-inf"},event.attributes=parseAttributes$1(match[1]),["PART-TARGET"].forEach((function(key){event.attributes.hasOwnProperty(key)&&(event.attributes[key]=parseFloat(event.attributes[key]))})),void this.trigger("data",event);if(match=/^#EXT-X-PRELOAD-HINT:(.*)$/.exec(newLine),match&&match[1])return event={type:"tag",tagType:"preload-hint"},event.attributes=parseAttributes$1(match[1]),["BYTERANGE-START","BYTERANGE-LENGTH"].forEach((function(key){if(event.attributes.hasOwnProperty(key)){event.attributes[key]=parseInt(event.attributes[key],10);const subkey="BYTERANGE-LENGTH"===key?"length":"offset";event.attributes.byterange=event.attributes.byterange||{},event.attributes.byterange[subkey]=event.attributes[key],delete event.attributes[key]}})),void this.trigger("data",event);if(match=/^#EXT-X-RENDITION-REPORT:(.*)$/.exec(newLine),match&&match[1])return event={type:"tag",tagType:"rendition-report"},event.attributes=parseAttributes$1(match[1]),["LAST-MSN","LAST-PART"].forEach((function(key){event.attributes.hasOwnProperty(key)&&(event.attributes[key]=parseInt(event.attributes[key],10))})),void this.trigger("data",event);if(match=/^#EXT-X-DATERANGE:(.*)$/.exec(newLine),match&&match[1]){event={type:"tag",tagType:"daterange"},event.attributes=parseAttributes$1(match[1]),["ID","CLASS"].forEach((function(key){event.attributes.hasOwnProperty(key)&&(event.attributes[key]=String(event.attributes[key]))})),["START-DATE","END-DATE"].forEach((function(key){event.attributes.hasOwnProperty(key)&&(event.attributes[key]=new Date(event.attributes[key]))})),["DURATION","PLANNED-DURATION"].forEach((function(key){event.attributes.hasOwnProperty(key)&&(event.attributes[key]=parseFloat(event.attributes[key]))})),["END-ON-NEXT"].forEach((function(key){event.attributes.hasOwnProperty(key)&&(event.attributes[key]=/YES/i.test(event.attributes[key]))})),["SCTE35-CMD"," SCTE35-OUT","SCTE35-IN"].forEach((function(key){event.attributes.hasOwnProperty(key)&&(event.attributes[key]=event.attributes[key].toString(16))}));const clientAttributePattern=/^X-([A-Z]+-)+[A-Z]+$/;for(const key in event.attributes){if(!clientAttributePattern.test(key))continue;const isHexaDecimal=/[0-9A-Fa-f]{6}/g.test(event.attributes[key]),isDecimalFloating=/^\d+(\.\d+)?$/.test(event.attributes[key]);event.attributes[key]=isHexaDecimal?event.attributes[key].toString(16):isDecimalFloating?parseFloat(event.attributes[key]):String(event.attributes[key])}this.trigger("data",event)}else if(match=/^#EXT-X-INDEPENDENT-SEGMENTS/.exec(newLine),match)this.trigger("data",{type:"tag",tagType:"independent-segments"});else{if(match=/^#EXT-X-CONTENT-STEERING:(.*)$/.exec(newLine),match)return event={type:"tag",tagType:"content-steering"},event.attributes=parseAttributes$1(match[1]),void this.trigger("data",event);this.trigger("data",{type:"tag",data:newLine.slice(4)})}}}}else this.trigger("data",{type:"comment",text:newLine.slice(1)})}))}addParser(_ref8){let{expression:expression,customType:customType,dataParser:dataParser,segment:segment}=_ref8;"function"!=typeof dataParser&&(dataParser=line=>line),this.customParsers.push((line=>{if(expression.exec(line))return this.trigger("data",{type:"custom",data:dataParser(line),customType:customType,segment:segment}),!0}))}addTagMapper(_ref9){let{expression:expression,map:map}=_ref9;this.tagMappers.push((line=>expression.test(line)?map(line):line))}}const camelCaseKeys=function(attributes){const result={};return Object.keys(attributes).forEach((function(key){var str;result[(str=key,str.toLowerCase().replace(/-(\w)/g,(a=>a[1].toUpperCase())))]=attributes[key]})),result},setHoldBack=function(manifest){const{serverControl:serverControl,targetDuration:targetDuration,partTargetDuration:partTargetDuration}=manifest;if(!serverControl)return;const tag="#EXT-X-SERVER-CONTROL",hb="holdBack",phb="partHoldBack",minTargetDuration=targetDuration&&3*targetDuration,minPartDuration=partTargetDuration&&2*partTargetDuration;targetDuration&&!serverControl.hasOwnProperty(hb)&&(serverControl[hb]=minTargetDuration,this.trigger("info",{message:"".concat(tag," defaulting HOLD-BACK to targetDuration * 3 (").concat(minTargetDuration,").")})),minTargetDuration&&serverControl[hb]<minTargetDuration&&(this.trigger("warn",{message:"".concat(tag," clamping HOLD-BACK (").concat(serverControl[hb],") to targetDuration * 3 (").concat(minTargetDuration,")")}),serverControl[hb]=minTargetDuration),partTargetDuration&&!serverControl.hasOwnProperty(phb)&&(serverControl[phb]=3*partTargetDuration,this.trigger("info",{message:"".concat(tag," defaulting PART-HOLD-BACK to partTargetDuration * 3 (").concat(serverControl[phb],").")})),partTargetDuration&&serverControl[phb]<minPartDuration&&(this.trigger("warn",{message:"".concat(tag," clamping PART-HOLD-BACK (").concat(serverControl[phb],") to partTargetDuration * 2 (").concat(minPartDuration,").")}),serverControl[phb]=minPartDuration)};class Parser extends Stream{constructor(){super(),this.lineStream=new LineStream,this.parseStream=new ParseStream,this.lineStream.pipe(this.parseStream),this.lastProgramDateTime=null;const self=this,uris=[];let currentMap,key,currentUri={},hasParts=!1;const noop=function(){},defaultMediaGroups={AUDIO:{},VIDEO:{},"CLOSED-CAPTIONS":{},SUBTITLES:{}};let currentTimeline=0;this.manifest={allowCache:!0,discontinuityStarts:[],dateRanges:[],segments:[]};let lastByterangeEnd=0,lastPartByterangeEnd=0;const dateRangeTags={};this.on("end",(()=>{currentUri.uri||!currentUri.parts&&!currentUri.preloadHints||(!currentUri.map&&currentMap&&(currentUri.map=currentMap),!currentUri.key&&key&&(currentUri.key=key),currentUri.timeline||"number"!=typeof currentTimeline||(currentUri.timeline=currentTimeline),this.manifest.preloadSegment=currentUri)})),this.parseStream.on("data",(function(entry){let mediaGroup,rendition;({tag(){({version(){entry.version&&(this.manifest.version=entry.version)},"allow-cache"(){this.manifest.allowCache=entry.allowed,"allowed"in entry||(this.trigger("info",{message:"defaulting allowCache to YES"}),this.manifest.allowCache=!0)},byterange(){const byterange={};"length"in entry&&(currentUri.byterange=byterange,byterange.length=entry.length,"offset"in entry||(entry.offset=lastByterangeEnd)),"offset"in entry&&(currentUri.byterange=byterange,byterange.offset=entry.offset),lastByterangeEnd=byterange.offset+byterange.length},endlist(){this.manifest.endList=!0},inf(){"mediaSequence"in this.manifest||(this.manifest.mediaSequence=0,this.trigger("info",{message:"defaulting media sequence to zero"})),"discontinuitySequence"in this.manifest||(this.manifest.discontinuitySequence=0,this.trigger("info",{message:"defaulting discontinuity sequence to zero"})),entry.title&&(currentUri.title=entry.title),entry.duration>0&&(currentUri.duration=entry.duration),0===entry.duration&&(currentUri.duration=.01,this.trigger("info",{message:"updating zero segment duration to a small value"})),this.manifest.segments=uris},key(){if(entry.attributes)if("NONE"!==entry.attributes.METHOD)if(entry.attributes.URI){if("com.apple.streamingkeydelivery"===entry.attributes.KEYFORMAT)return this.manifest.contentProtection=this.manifest.contentProtection||{},void(this.manifest.contentProtection["com.apple.fps.1_0"]={attributes:entry.attributes});if("com.microsoft.playready"===entry.attributes.KEYFORMAT)return this.manifest.contentProtection=this.manifest.contentProtection||{},void(this.manifest.contentProtection["com.microsoft.playready"]={uri:entry.attributes.URI});if("urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"===entry.attributes.KEYFORMAT){return-1===["SAMPLE-AES","SAMPLE-AES-CTR","SAMPLE-AES-CENC"].indexOf(entry.attributes.METHOD)?void this.trigger("warn",{message:"invalid key method provided for Widevine"}):("SAMPLE-AES-CENC"===entry.attributes.METHOD&&this.trigger("warn",{message:"SAMPLE-AES-CENC is deprecated, please use SAMPLE-AES-CTR instead"}),"data:text/plain;base64,"!==entry.attributes.URI.substring(0,23)?void this.trigger("warn",{message:"invalid key URI provided for Widevine"}):entry.attributes.KEYID&&"0x"===entry.attributes.KEYID.substring(0,2)?(this.manifest.contentProtection=this.manifest.contentProtection||{},void(this.manifest.contentProtection["com.widevine.alpha"]={attributes:{schemeIdUri:entry.attributes.KEYFORMAT,keyId:entry.attributes.KEYID.substring(2)},pssh:decodeB64ToUint8Array$1(entry.attributes.URI.split(",")[1])})):void this.trigger("warn",{message:"invalid key ID provided for Widevine"}))}entry.attributes.METHOD||this.trigger("warn",{message:"defaulting key method to AES-128"}),key={method:entry.attributes.METHOD||"AES-128",uri:entry.attributes.URI},void 0!==entry.attributes.IV&&(key.iv=entry.attributes.IV)}else this.trigger("warn",{message:"ignoring key declaration without URI"});else key=null;else this.trigger("warn",{message:"ignoring key declaration without attribute list"})},"media-sequence"(){isFinite(entry.number)?this.manifest.mediaSequence=entry.number:this.trigger("warn",{message:"ignoring invalid media sequence: "+entry.number})},"discontinuity-sequence"(){isFinite(entry.number)?(this.manifest.discontinuitySequence=entry.number,currentTimeline=entry.number):this.trigger("warn",{message:"ignoring invalid discontinuity sequence: "+entry.number})},"playlist-type"(){/VOD|EVENT/.test(entry.playlistType)?this.manifest.playlistType=entry.playlistType:this.trigger("warn",{message:"ignoring unknown playlist type: "+entry.playlist})},map(){currentMap={},entry.uri&&(currentMap.uri=entry.uri),entry.byterange&&(currentMap.byterange=entry.byterange),key&&(currentMap.key=key)},"stream-inf"(){this.manifest.playlists=uris,this.manifest.mediaGroups=this.manifest.mediaGroups||defaultMediaGroups,entry.attributes?(currentUri.attributes||(currentUri.attributes={}),_extends$1(currentUri.attributes,entry.attributes)):this.trigger("warn",{message:"ignoring empty stream-inf attributes"})},media(){if(this.manifest.mediaGroups=this.manifest.mediaGroups||defaultMediaGroups,!(entry.attributes&&entry.attributes.TYPE&&entry.attributes["GROUP-ID"]&&entry.attributes.NAME))return void this.trigger("warn",{message:"ignoring incomplete or missing media group"});const mediaGroupType=this.manifest.mediaGroups[entry.attributes.TYPE];mediaGroupType[entry.attributes["GROUP-ID"]]=mediaGroupType[entry.attributes["GROUP-ID"]]||{},mediaGroup=mediaGroupType[entry.attributes["GROUP-ID"]],rendition={default:/yes/i.test(entry.attributes.DEFAULT)},rendition.default?rendition.autoselect=!0:rendition.autoselect=/yes/i.test(entry.attributes.AUTOSELECT),entry.attributes.LANGUAGE&&(rendition.language=entry.attributes.LANGUAGE),entry.attributes.URI&&(rendition.uri=entry.attributes.URI),entry.attributes["INSTREAM-ID"]&&(rendition.instreamId=entry.attributes["INSTREAM-ID"]),entry.attributes.CHARACTERISTICS&&(rendition.characteristics=entry.attributes.CHARACTERISTICS),entry.attributes.FORCED&&(rendition.forced=/yes/i.test(entry.attributes.FORCED)),mediaGroup[entry.attributes.NAME]=rendition},discontinuity(){currentTimeline+=1,currentUri.discontinuity=!0,this.manifest.discontinuityStarts.push(uris.length)},"program-date-time"(){void 0===this.manifest.dateTimeString&&(this.manifest.dateTimeString=entry.dateTimeString,this.manifest.dateTimeObject=entry.dateTimeObject),currentUri.dateTimeString=entry.dateTimeString,currentUri.dateTimeObject=entry.dateTimeObject;const{lastProgramDateTime:lastProgramDateTime}=this;this.lastProgramDateTime=new Date(entry.dateTimeString).getTime(),null===lastProgramDateTime&&this.manifest.segments.reduceRight(((programDateTime,segment)=>(segment.programDateTime=programDateTime-1e3*segment.duration,segment.programDateTime)),this.lastProgramDateTime)},targetduration(){!isFinite(entry.duration)||entry.duration<0?this.trigger("warn",{message:"ignoring invalid target duration: "+entry.duration}):(this.manifest.targetDuration=entry.duration,setHoldBack.call(this,this.manifest))},start(){entry.attributes&&!isNaN(entry.attributes["TIME-OFFSET"])?this.manifest.start={timeOffset:entry.attributes["TIME-OFFSET"],precise:entry.attributes.PRECISE}:this.trigger("warn",{message:"ignoring start declaration without appropriate attribute list"})},"cue-out"(){currentUri.cueOut=entry.data},"cue-out-cont"(){currentUri.cueOutCont=entry.data},"cue-in"(){currentUri.cueIn=entry.data},skip(){this.manifest.skip=camelCaseKeys(entry.attributes),this.warnOnMissingAttributes_("#EXT-X-SKIP",entry.attributes,["SKIPPED-SEGMENTS"])},part(){hasParts=!0;const segmentIndex=this.manifest.segments.length,part=camelCaseKeys(entry.attributes);currentUri.parts=currentUri.parts||[],currentUri.parts.push(part),part.byterange&&(part.byterange.hasOwnProperty("offset")||(part.byterange.offset=lastPartByterangeEnd),lastPartByterangeEnd=part.byterange.offset+part.byterange.length);const partIndex=currentUri.parts.length-1;this.warnOnMissingAttributes_("#EXT-X-PART #".concat(partIndex," for segment #").concat(segmentIndex),entry.attributes,["URI","DURATION"]),this.manifest.renditionReports&&this.manifest.renditionReports.forEach(((r,i)=>{r.hasOwnProperty("lastPart")||this.trigger("warn",{message:"#EXT-X-RENDITION-REPORT #".concat(i," lacks required attribute(s): LAST-PART")})}))},"server-control"(){const attrs=this.manifest.serverControl=camelCaseKeys(entry.attributes);attrs.hasOwnProperty("canBlockReload")||(attrs.canBlockReload=!1,this.trigger("info",{message:"#EXT-X-SERVER-CONTROL defaulting CAN-BLOCK-RELOAD to false"})),setHoldBack.call(this,this.manifest),attrs.canSkipDateranges&&!attrs.hasOwnProperty("canSkipUntil")&&this.trigger("warn",{message:"#EXT-X-SERVER-CONTROL lacks required attribute CAN-SKIP-UNTIL which is required when CAN-SKIP-DATERANGES is set"})},"preload-hint"(){const segmentIndex=this.manifest.segments.length,hint=camelCaseKeys(entry.attributes),isPart=hint.type&&"PART"===hint.type;currentUri.preloadHints=currentUri.preloadHints||[],currentUri.preloadHints.push(hint),hint.byterange&&(hint.byterange.hasOwnProperty("offset")||(hint.byterange.offset=isPart?lastPartByterangeEnd:0,isPart&&(lastPartByterangeEnd=hint.byterange.offset+hint.byterange.length)));const index=currentUri.preloadHints.length-1;if(this.warnOnMissingAttributes_("#EXT-X-PRELOAD-HINT #".concat(index," for segment #").concat(segmentIndex),entry.attributes,["TYPE","URI"]),hint.type)for(let i=0;i<currentUri.preloadHints.length-1;i++){const otherHint=currentUri.preloadHints[i];otherHint.type&&(otherHint.type===hint.type&&this.trigger("warn",{message:"#EXT-X-PRELOAD-HINT #".concat(index," for segment #").concat(segmentIndex," has the same TYPE ").concat(hint.type," as preload hint #").concat(i)}))}},"rendition-report"(){const report=camelCaseKeys(entry.attributes);this.manifest.renditionReports=this.manifest.renditionReports||[],this.manifest.renditionReports.push(report);const index=this.manifest.renditionReports.length-1,required=["LAST-MSN","URI"];hasParts&&required.push("LAST-PART"),this.warnOnMissingAttributes_("#EXT-X-RENDITION-REPORT #".concat(index),entry.attributes,required)},"part-inf"(){this.manifest.partInf=camelCaseKeys(entry.attributes),this.warnOnMissingAttributes_("#EXT-X-PART-INF",entry.attributes,["PART-TARGET"]),this.manifest.partInf.partTarget&&(this.manifest.partTargetDuration=this.manifest.partInf.partTarget),setHoldBack.call(this,this.manifest)},daterange(){this.manifest.dateRanges.push(camelCaseKeys(entry.attributes));const index=this.manifest.dateRanges.length-1;this.warnOnMissingAttributes_("#EXT-X-DATERANGE #".concat(index),entry.attributes,["ID","START-DATE"]);const dateRange=this.manifest.dateRanges[index];dateRange.endDate&&dateRange.startDate&&new Date(dateRange.endDate)<new 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attr,prefix,uri;if(needNamespaceDefine(attr=attrs.item(i),0,visibleNamespaces))addSerializedAttribute(buf,(prefix=attr.prefix||"")?"xmlns:"+prefix:"xmlns",uri=attr.namespaceURI),visibleNamespaces.push({prefix:prefix,namespace:uri});serializeToString(attr,buf,isHTML,nodeFilter,visibleNamespaces)}if(nodeName===prefixedNodeName&&needNamespaceDefine(node,0,visibleNamespaces))addSerializedAttribute(buf,(prefix=node.prefix||"")?"xmlns:"+prefix:"xmlns",uri=node.namespaceURI),visibleNamespaces.push({prefix:prefix,namespace:uri});if(child||isHTML&&!/^(?:meta|link|img|br|hr|input)$/i.test(nodeName)){if(buf.push(">"),isHTML&&/^script$/i.test(nodeName))for(;child;)child.data?buf.push(child.data):serializeToString(child,buf,isHTML,nodeFilter,visibleNamespaces.slice()),child=child.nextSibling;else for(;child;)serializeToString(child,buf,isHTML,nodeFilter,visibleNamespaces.slice()),child=child.nextSibling;buf.push("</",prefixedNodeName,">")}else buf.push("/>");return;case DOCUMENT_NODE:case DOCUMENT_FRAGMENT_NODE:for(child=node.firstChild;child;)serializeToString(child,buf,isHTML,nodeFilter,visibleNamespaces.slice()),child=child.nextSibling;return;case ATTRIBUTE_NODE:return addSerializedAttribute(buf,node.name,node.value);case TEXT_NODE:return buf.push(node.data.replace(/[<&>]/g,_xmlEncoder));case CDATA_SECTION_NODE:return buf.push("<![CDATA[",node.data,"]]>");case COMMENT_NODE:return buf.push("\x3c!--",node.data,"--\x3e");case DOCUMENT_TYPE_NODE:var pubid=node.publicId,sysid=node.systemId;if(buf.push("<!DOCTYPE ",node.name),pubid)buf.push(" PUBLIC ",pubid),sysid&&"."!=sysid&&buf.push(" ",sysid),buf.push(">");else if(sysid&&"."!=sysid)buf.push(" SYSTEM ",sysid,">");else{var sub=node.internalSubset;sub&&buf.push(" [",sub,"]"),buf.push(">")}return;case PROCESSING_INSTRUCTION_NODE:return buf.push("<?",node.target," ",node.data,"?>");case ENTITY_REFERENCE_NODE:return buf.push("&",node.nodeName,";");default:buf.push("??",node.nodeName)}}function importNode(doc,node,deep){var node2;switch(node.nodeType){case ELEMENT_NODE:(node2=node.cloneNode(!1)).ownerDocument=doc;case DOCUMENT_FRAGMENT_NODE:break;case ATTRIBUTE_NODE:deep=!0}if(node2||(node2=node.cloneNode(!1)),node2.ownerDocument=doc,node2.parentNode=null,deep)for(var child=node.firstChild;child;)node2.appendChild(importNode(doc,child,deep)),child=child.nextSibling;return node2}function cloneNode(doc,node,deep){var node2=new node.constructor;for(var n in node)if(Object.prototype.hasOwnProperty.call(node,n)){var v=node[n];"object"!=typeof v&&v!=node2[n]&&(node2[n]=v)}switch(node.childNodes&&(node2.childNodes=new NodeList),node2.ownerDocument=doc,node2.nodeType){case ELEMENT_NODE:var attrs=node.attributes,attrs2=node2.attributes=new NamedNodeMap,len=attrs.length;attrs2._ownerElement=node2;for(var i=0;i<len;i++)node2.setAttributeNode(cloneNode(doc,attrs.item(i),!0));break;case ATTRIBUTE_NODE:deep=!0}if(deep)for(var child=node.firstChild;child;)node2.appendChild(cloneNode(doc,child,deep)),child=child.nextSibling;return node2}function __set__(object,key,value){object[key]=value}ExceptionCode.INVALID_STATE_ERR=(ExceptionMessage[11]="Invalid state",11),ExceptionCode.SYNTAX_ERR=(ExceptionMessage[12]="Syntax error",12),ExceptionCode.INVALID_MODIFICATION_ERR=(ExceptionMessage[13]="Invalid modification",13),ExceptionCode.NAMESPACE_ERR=(ExceptionMessage[14]="Invalid namespace",14),ExceptionCode.INVALID_ACCESS_ERR=(ExceptionMessage[15]="Invalid access",15),DOMException.prototype=Error.prototype,copy(ExceptionCode,DOMException),NodeList.prototype={length:0,item:function(index){return index>=0&&index<this.length?this[index]:null},toString:function(isHTML,nodeFilter){for(var buf=[],i=0;i<this.length;i++)serializeToString(this[i],buf,isHTML,nodeFilter);return buf.join("")},filter:function(predicate){return Array.prototype.filter.call(this,predicate)},indexOf:function(item){return Array.prototype.indexOf.call(this,item)}},LiveNodeList.prototype.item=function(i){return _updateLiveList(this),this[i]||null},_extends(LiveNodeList,NodeList),NamedNodeMap.prototype={length:0,item:NodeList.prototype.item,getNamedItem:function(key){for(var i=this.length;i--;){var attr=this[i];if(attr.nodeName==key)return attr}},setNamedItem:function(attr){var el=attr.ownerElement;if(el&&el!=this._ownerElement)throw new DOMException(INUSE_ATTRIBUTE_ERR);var oldAttr=this.getNamedItem(attr.nodeName);return _addNamedNode(this._ownerElement,this,attr,oldAttr),oldAttr},setNamedItemNS:function(attr){var oldAttr,el=attr.ownerElement;if(el&&el!=this._ownerElement)throw new DOMException(INUSE_ATTRIBUTE_ERR);return oldAttr=this.getNamedItemNS(attr.namespaceURI,attr.localName),_addNamedNode(this._ownerElement,this,attr,oldAttr),oldAttr},removeNamedItem:function(key){var attr=this.getNamedItem(key);return _removeNamedNode(this._ownerElement,this,attr),attr},removeNamedItemNS:function(namespaceURI,localName){var attr=this.getNamedItemNS(namespaceURI,localName);return _removeNamedNode(this._ownerElement,this,attr),attr},getNamedItemNS:function(namespaceURI,localName){for(var i=this.length;i--;){var node=this[i];if(node.localName==localName&&node.namespaceURI==namespaceURI)return node}return null}},DOMImplementation$1.prototype={hasFeature:function(feature,version){return!0},createDocument:function(namespaceURI,qualifiedName,doctype){var doc=new Document;if(doc.implementation=this,doc.childNodes=new NodeList,doc.doctype=doctype||null,doctype&&doc.appendChild(doctype),qualifiedName){var root=doc.createElementNS(namespaceURI,qualifiedName);doc.appendChild(root)}return doc},createDocumentType:function(qualifiedName,publicId,systemId){var node=new DocumentType;return node.name=qualifiedName,node.nodeName=qualifiedName,node.publicId=publicId||"",node.systemId=systemId||"",node}},Node.prototype={firstChild:null,lastChild:null,previousSibling:null,nextSibling:null,attributes:null,parentNode:null,childNodes:null,ownerDocument:null,nodeValue:null,namespaceURI:null,prefix:null,localName:null,insertBefore:function(newChild,refChild){return _insertBefore(this,newChild,refChild)},replaceChild:function(newChild,oldChild){_insertBefore(this,newChild,oldChild,assertPreReplacementValidityInDocument),oldChild&&this.removeChild(oldChild)},removeChild:function(oldChild){return _removeChild(this,oldChild)},appendChild:function(newChild){return this.insertBefore(newChild,null)},hasChildNodes:function(){return null!=this.firstChild},cloneNode:function(deep){return cloneNode(this.ownerDocument||this,this,deep)},normalize:function(){for(var child=this.firstChild;child;){var next=child.nextSibling;next&&next.nodeType==TEXT_NODE&&child.nodeType==TEXT_NODE?(this.removeChild(next),child.appendData(next.data)):(child.normalize(),child=next)}},isSupported:function(feature,version){return this.ownerDocument.implementation.hasFeature(feature,version)},hasAttributes:function(){return this.attributes.length>0},lookupPrefix:function(namespaceURI){for(var el=this;el;){var map=el._nsMap;if(map)for(var n in map)if(Object.prototype.hasOwnProperty.call(map,n)&&map[n]===namespaceURI)return n;el=el.nodeType==ATTRIBUTE_NODE?el.ownerDocument:el.parentNode}return null},lookupNamespaceURI:function(prefix){for(var el=this;el;){var map=el._nsMap;if(map&&Object.prototype.hasOwnProperty.call(map,prefix))return map[prefix];el=el.nodeType==ATTRIBUTE_NODE?el.ownerDocument:el.parentNode}return null},isDefaultNamespace:function(namespaceURI){return null==this.lookupPrefix(namespaceURI)}},copy(NodeType,Node),copy(NodeType,Node.prototype),Document.prototype={nodeName:"#document",nodeType:DOCUMENT_NODE,doctype:null,documentElement:null,_inc:1,insertBefore:function(newChild,refChild){if(newChild.nodeType==DOCUMENT_FRAGMENT_NODE){for(var child=newChild.firstChild;child;){var next=child.nextSibling;this.insertBefore(child,refChild),child=next}return newChild}return _insertBefore(this,newChild,refChild),newChild.ownerDocument=this,null===this.documentElement&&newChild.nodeType===ELEMENT_NODE&&(this.documentElement=newChild),newChild},removeChild:function(oldChild){return this.documentElement==oldChild&&(this.documentElement=null),_removeChild(this,oldChild)},replaceChild:function(newChild,oldChild){_insertBefore(this,newChild,oldChild,assertPreReplacementValidityInDocument),newChild.ownerDocument=this,oldChild&&this.removeChild(oldChild),isElementNode(newChild)&&(this.documentElement=newChild)},importNode:function(importedNode,deep){return importNode(this,importedNode,deep)},getElementById:function(id){var rtv=null;return _visitNode(this.documentElement,(function(node){if(node.nodeType==ELEMENT_NODE&&node.getAttribute("id")==id)return rtv=node,!0})),rtv},getElementsByClassName:function(classNames){var classNamesSet=toOrderedSet(classNames);return new LiveNodeList(this,(function(base){var ls=[];return classNamesSet.length>0&&_visitNode(base.documentElement,(function(node){if(node!==base&&node.nodeType===ELEMENT_NODE){var nodeClassNames=node.getAttribute("class");if(nodeClassNames){var matches=classNames===nodeClassNames;if(!matches){var nodeClassNamesSet=toOrderedSet(nodeClassNames);matches=classNamesSet.every((list=nodeClassNamesSet,function(element){return list&&-1!==list.indexOf(element)}))}matches&&ls.push(node)}}var list})),ls}))},createElement:function(tagName){var node=new Element;return node.ownerDocument=this,node.nodeName=tagName,node.tagName=tagName,node.localName=tagName,node.childNodes=new NodeList,(node.attributes=new NamedNodeMap)._ownerElement=node,node},createDocumentFragment:function(){var node=new DocumentFragment;return node.ownerDocument=this,node.childNodes=new NodeList,node},createTextNode:function(data){var node=new Text;return node.ownerDocument=this,node.appendData(data),node},createComment:function(data){var node=new Comment;return node.ownerDocument=this,node.appendData(data),node},createCDATASection:function(data){var node=new CDATASection;return node.ownerDocument=this,node.appendData(data),node},createProcessingInstruction:function(target,data){var node=new ProcessingInstruction;return node.ownerDocument=this,node.tagName=node.nodeName=node.target=target,node.nodeValue=node.data=data,node},createAttribute:function(name){var node=new Attr;return node.ownerDocument=this,node.name=name,node.nodeName=name,node.localName=name,node.specified=!0,node},createEntityReference:function(name){var node=new EntityReference;return node.ownerDocument=this,node.nodeName=name,node},createElementNS:function(namespaceURI,qualifiedName){var node=new Element,pl=qualifiedName.split(":"),attrs=node.attributes=new NamedNodeMap;return node.childNodes=new NodeList,node.ownerDocument=this,node.nodeName=qualifiedName,node.tagName=qualifiedName,node.namespaceURI=namespaceURI,2==pl.length?(node.prefix=pl[0],node.localName=pl[1]):node.localName=qualifiedName,attrs._ownerElement=node,node},createAttributeNS:function(namespaceURI,qualifiedName){var node=new Attr,pl=qualifiedName.split(":");return node.ownerDocument=this,node.nodeName=qualifiedName,node.name=qualifiedName,node.namespaceURI=namespaceURI,node.specified=!0,2==pl.length?(node.prefix=pl[0],node.localName=pl[1]):node.localName=qualifiedName,node}},_extends(Document,Node),Element.prototype={nodeType:ELEMENT_NODE,hasAttribute:function(name){return null!=this.getAttributeNode(name)},getAttribute:function(name){var attr=this.getAttributeNode(name);return attr&&attr.value||""},getAttributeNode:function(name){return this.attributes.getNamedItem(name)},setAttribute:function(name,value){var attr=this.ownerDocument.createAttribute(name);attr.value=attr.nodeValue=""+value,this.setAttributeNode(attr)},removeAttribute:function(name){var attr=this.getAttributeNode(name);attr&&this.removeAttributeNode(attr)},appendChild:function(newChild){return newChild.nodeType===DOCUMENT_FRAGMENT_NODE?this.insertBefore(newChild,null):function(parentNode,newChild){return newChild.parentNode&&newChild.parentNode.removeChild(newChild),newChild.parentNode=parentNode,newChild.previousSibling=parentNode.lastChild,newChild.nextSibling=null,newChild.previousSibling?newChild.previousSibling.nextSibling=newChild:parentNode.firstChild=newChild,parentNode.lastChild=newChild,_onUpdateChild(parentNode.ownerDocument,parentNode,newChild),newChild}(this,newChild)},setAttributeNode:function(newAttr){return this.attributes.setNamedItem(newAttr)},setAttributeNodeNS:function(newAttr){return this.attributes.setNamedItemNS(newAttr)},removeAttributeNode:function(oldAttr){return this.attributes.removeNamedItem(oldAttr.nodeName)},removeAttributeNS:function(namespaceURI,localName){var old=this.getAttributeNodeNS(namespaceURI,localName);old&&this.removeAttributeNode(old)},hasAttributeNS:function(namespaceURI,localName){return null!=this.getAttributeNodeNS(namespaceURI,localName)},getAttributeNS:function(namespaceURI,localName){var attr=this.getAttributeNodeNS(namespaceURI,localName);return attr&&attr.value||""},setAttributeNS:function(namespaceURI,qualifiedName,value){var attr=this.ownerDocument.createAttributeNS(namespaceURI,qualifiedName);attr.value=attr.nodeValue=""+value,this.setAttributeNode(attr)},getAttributeNodeNS:function(namespaceURI,localName){return this.attributes.getNamedItemNS(namespaceURI,localName)},getElementsByTagName:function(tagName){return new LiveNodeList(this,(function(base){var ls=[];return _visitNode(base,(function(node){node===base||node.nodeType!=ELEMENT_NODE||"*"!==tagName&&node.tagName!=tagName||ls.push(node)})),ls}))},getElementsByTagNameNS:function(namespaceURI,localName){return new LiveNodeList(this,(function(base){var ls=[];return _visitNode(base,(function(node){node===base||node.nodeType!==ELEMENT_NODE||"*"!==namespaceURI&&node.namespaceURI!==namespaceURI||"*"!==localName&&node.localName!=localName||ls.push(node)})),ls}))}},Document.prototype.getElementsByTagName=Element.prototype.getElementsByTagName,Document.prototype.getElementsByTagNameNS=Element.prototype.getElementsByTagNameNS,_extends(Element,Node),Attr.prototype.nodeType=ATTRIBUTE_NODE,_extends(Attr,Node),CharacterData.prototype={data:"",substringData:function(offset,count){return this.data.substring(offset,offset+count)},appendData:function(text){text=this.data+text,this.nodeValue=this.data=text,this.length=text.length},insertData:function(offset,text){this.replaceData(offset,0,text)},appendChild:function(newChild){throw new Error(ExceptionMessage[HIERARCHY_REQUEST_ERR])},deleteData:function(offset,count){this.replaceData(offset,count,"")},replaceData:function(offset,count,text){text=this.data.substring(0,offset)+text+this.data.substring(offset+count),this.nodeValue=this.data=text,this.length=text.length}},_extends(CharacterData,Node),Text.prototype={nodeName:"#text",nodeType:TEXT_NODE,splitText:function(offset){var text=this.data,newText=text.substring(offset);text=text.substring(0,offset),this.data=this.nodeValue=text,this.length=text.length;var newNode=this.ownerDocument.createTextNode(newText);return this.parentNode&&this.parentNode.insertBefore(newNode,this.nextSibling),newNode}},_extends(Text,CharacterData),Comment.prototype={nodeName:"#comment",nodeType:COMMENT_NODE},_extends(Comment,CharacterData),CDATASection.prototype={nodeName:"#cdata-section",nodeType:CDATA_SECTION_NODE},_extends(CDATASection,CharacterData),DocumentType.prototype.nodeType=DOCUMENT_TYPE_NODE,_extends(DocumentType,Node),Notation.prototype.nodeType=NOTATION_NODE,_extends(Notation,Node),Entity.prototype.nodeType=ENTITY_NODE,_extends(Entity,Node),EntityReference.prototype.nodeType=ENTITY_REFERENCE_NODE,_extends(EntityReference,Node),DocumentFragment.prototype.nodeName="#document-fragment",DocumentFragment.prototype.nodeType=DOCUMENT_FRAGMENT_NODE,_extends(DocumentFragment,Node),ProcessingInstruction.prototype.nodeType=PROCESSING_INSTRUCTION_NODE,_extends(ProcessingInstruction,Node),XMLSerializer.prototype.serializeToString=function(node,isHtml,nodeFilter){return nodeSerializeToString.call(node,isHtml,nodeFilter)},Node.prototype.toString=nodeSerializeToString;try{if(Object.defineProperty){function getTextContent(node){switch(node.nodeType){case ELEMENT_NODE:case DOCUMENT_FRAGMENT_NODE:var buf=[];for(node=node.firstChild;node;)7!==node.nodeType&&8!==node.nodeType&&buf.push(getTextContent(node)),node=node.nextSibling;return buf.join("");default:return node.nodeValue}}Object.defineProperty(LiveNodeList.prototype,"length",{get:function(){return _updateLiveList(this),this.$$length}}),Object.defineProperty(Node.prototype,"textContent",{get:function(){return getTextContent(this)},set:function(data){switch(this.nodeType){case ELEMENT_NODE:case DOCUMENT_FRAGMENT_NODE:for(;this.firstChild;)this.removeChild(this.firstChild);(data||String(data))&&this.appendChild(this.ownerDocument.createTextNode(data));break;default:this.data=data,this.value=data,this.nodeValue=data}}}),__set__=function(object,key,value){object["$$"+key]=value}}}catch(e){}var dom={DocumentType:DocumentType,DOMException:DOMException,DOMImplementation:DOMImplementation$1,Element:Element,Node:Node,NodeList:NodeList,XMLSerializer:XMLSerializer},entities=createCommonjsModule((function(module,exports){var freeze=conventions.freeze;exports.XML_ENTITIES=freeze({amp:"&",apos:"'",gt:">",lt:"<",quot:'"'}),exports.HTML_ENTITIES=freeze({Aacute:"Á",aacute:"á",Abreve:"Ă",abreve:"ă",ac:"∾",acd:"∿",acE:"∾̳",Acirc:"Â",acirc:"â",acute:"´",Acy:"А",acy:"а",AElig:"Æ",aelig:"æ",af:"⁡",Afr:"𝔄",afr:"𝔞",Agrave:"À",agrave:"à",alefsym:"ℵ",aleph:"ℵ",Alpha:"Α",alpha:"α",Amacr:"Ā",amacr:"ā",amalg:"⨿",AMP:"&",amp:"&",And:"⩓",and:"∧",andand:"⩕",andd:"⩜",andslope:"⩘",andv:"⩚",ang:"∠",ange:"⦤",angle:"∠",angmsd:"∡",angmsdaa:"⦨",angmsdab:"⦩",angmsdac:"⦪",angmsdad:"⦫",angmsdae:"⦬",angmsdaf:"⦭",angmsdag:"⦮",angmsdah:"⦯",angrt:"∟",angrtvb:"⊾",angrtvbd:"⦝",angsph:"∢",angst:"Å",angzarr:"⍼",Aogon:"Ą",aogon:"ą",Aopf:"𝔸",aopf:"𝕒",ap:"≈",apacir:"⩯",apE:"⩰",ape:"≊",apid:"≋",apos:"'",ApplyFunction:"⁡",approx:"≈",approxeq:"≊",Aring:"Å",aring:"å",Ascr:"𝒜",ascr:"𝒶",Assign:"≔",ast:"*",asymp:"≈",asympeq:"≍",Atilde:"Ã",atilde:"ã",Auml:"Ä",auml:"ä",awconint:"∳",awint:"⨑",backcong:"≌",backepsilon:"϶",backprime:"‵",backsim:"∽",backsimeq:"⋍",Backslash:"∖",Barv:"⫧",barvee:"⊽",Barwed:"⌆",barwed:"⌅",barwedge:"⌅",bbrk:"⎵",bbrktbrk:"⎶",bcong:"≌",Bcy:"Б",bcy:"б",bdquo:"„",becaus:"∵",Because:"∵",because:"∵",bemptyv:"⦰",bepsi:"϶",bernou:"ℬ",Bernoullis:"ℬ",Beta:"Β",beta:"β",beth:"ℶ",between:"≬",Bfr:"𝔅",bfr:"𝔟",bigcap:"⋂",bigcirc:"◯",bigcup:"⋃",bigodot:"⨀",bigoplus:"⨁",bigotimes:"⨂",bigsqcup:"⨆",bigstar:"★",bigtriangledown:"▽",bigtriangleup:"△",biguplus:"⨄",bigvee:"⋁",bigwedge:"⋀",bkarow:"⤍",blacklozenge:"⧫",blacksquare:"▪",blacktriangle:"▴",blacktriangledown:"▾",blacktriangleleft:"◂",blacktriangleright:"▸",blank:"␣",blk12:"▒",blk14:"░",blk34:"▓",block:"█",bne:"=⃥",bnequiv:"≡⃥",bNot:"⫭",bnot:"⌐",Bopf:"𝔹",bopf:"𝕓",bot:"⊥",bottom:"⊥",bowtie:"⋈",boxbox:"⧉",boxDL:"╗",boxDl:"╖",boxdL:"╕",boxdl:"┐",boxDR:"╔",boxDr:"╓",boxdR:"╒",boxdr:"┌",boxH:"═",boxh:"─",boxHD:"╦",boxHd:"╤",boxhD:"╥",boxhd:"┬",boxHU:"╩",boxHu:"╧",boxhU:"╨",boxhu:"┴",boxminus:"⊟",boxplus:"⊞",boxtimes:"⊠",boxUL:"╝",boxUl:"╜",boxuL:"╛",boxul:"┘",boxUR:"╚",boxUr:"╙",boxuR:"╘",boxur:"└",boxV:"║",boxv:"│",boxVH:"╬",boxVh:"╫",boxvH:"╪",boxvh:"┼",boxVL:"╣",boxVl:"╢",boxvL:"╡",boxvl:"┤",boxVR:"╠",boxVr:"╟",boxvR:"╞",boxvr:"├",bprime:"‵",Breve:"˘",breve:"˘",brvbar:"¦",Bscr:"ℬ",bscr:"𝒷",bsemi:"⁏",bsim:"∽",bsime:"⋍",bsol:"\\",bsolb:"⧅",bsolhsub:"⟈",bull:"•",bullet:"•",bump:"≎",bumpE:"⪮",bumpe:"≏",Bumpeq:"≎",bumpeq:"≏",Cacute:"Ć",cacute:"ć",Cap:"⋒",cap:"∩",capand:"⩄",capbrcup:"⩉",capcap:"⩋",capcup:"⩇",capdot:"⩀",CapitalDifferentialD:"ⅅ",caps:"∩︀",caret:"⁁",caron:"ˇ",Cayleys:"ℭ",ccaps:"⩍",Ccaron:"Č",ccaron:"č",Ccedil:"Ç",ccedil:"ç",Ccirc:"Ĉ",ccirc:"ĉ",Cconint:"∰",ccups:"⩌",ccupssm:"⩐",Cdot:"Ċ",cdot:"ċ",cedil:"¸",Cedilla:"¸",cemptyv:"⦲",cent:"¢",CenterDot:"·",centerdot:"·",Cfr:"ℭ",cfr:"𝔠",CHcy:"Ч",chcy:"ч",check:"✓",checkmark:"✓",Chi:"Χ",chi:"χ",cir:"○",circ:"ˆ",circeq:"≗",circlearrowleft:"↺",circlearrowright:"↻",circledast:"⊛",circledcirc:"⊚",circleddash:"⊝",CircleDot:"⊙",circledR:"®",circledS:"Ⓢ",CircleMinus:"⊖",CirclePlus:"⊕",CircleTimes:"⊗",cirE:"⧃",cire:"≗",cirfnint:"⨐",cirmid:"⫯",cirscir:"⧂",ClockwiseContourIntegral:"∲",CloseCurlyDoubleQuote:"”",CloseCurlyQuote:"’",clubs:"♣",clubsuit:"♣",Colon:"∷",colon:":",Colone:"⩴",colone:"≔",coloneq:"≔",comma:",",commat:"@",comp:"∁",compfn:"∘",complement:"∁",complexes:"ℂ",cong:"≅",congdot:"⩭",Congruent:"≡",Conint:"∯",conint:"∮",ContourIntegral:"∮",Copf:"ℂ",copf:"𝕔",coprod:"∐",Coproduct:"∐",COPY:"©",copy:"©",copysr:"℗",CounterClockwiseContourIntegral:"∳",crarr:"↵",Cross:"⨯",cross:"✗",Cscr:"𝒞",cscr:"𝒸",csub:"⫏",csube:"⫑",csup:"⫐",csupe:"⫒",ctdot:"⋯",cudarrl:"⤸",cudarrr:"⤵",cuepr:"⋞",cuesc:"⋟",cularr:"↶",cularrp:"⤽",Cup:"⋓",cup:"∪",cupbrcap:"⩈",CupCap:"≍",cupcap:"⩆",cupcup:"⩊",cupdot:"⊍",cupor:"⩅",cups:"∪︀",curarr:"↷",curarrm:"⤼",curlyeqprec:"⋞",curlyeqsucc:"⋟",curlyvee:"⋎",curlywedge:"⋏",curren:"¤",curvearrowleft:"↶",curvearrowright:"↷",cuvee:"⋎",cuwed:"⋏",cwconint:"∲",cwint:"∱",cylcty:"⌭",Dagger:"‡",dagger:"†",daleth:"ℸ",Darr:"↡",dArr:"⇓",darr:"↓",dash:"‐",Dashv:"⫤",dashv:"⊣",dbkarow:"⤏",dblac:"˝",Dcaron:"Ď",dcaron:"ď",Dcy:"Д",dcy:"д",DD:"ⅅ",dd:"ⅆ",ddagger:"‡",ddarr:"⇊",DDotrahd:"⤑",ddotseq:"⩷",deg:"°",Del:"∇",Delta:"Δ",delta:"δ",demptyv:"⦱",dfisht:"⥿",Dfr:"𝔇",dfr:"𝔡",dHar:"⥥",dharl:"⇃",dharr:"⇂",DiacriticalAcute:"´",DiacriticalDot:"˙",DiacriticalDoubleAcute:"˝",DiacriticalGrave:"`",DiacriticalTilde:"˜",diam:"⋄",Diamond:"⋄",diamond:"⋄",diamondsuit:"♦",diams:"♦",die:"¨",DifferentialD:"ⅆ",digamma:"ϝ",disin:"⋲",div:"÷",divide:"÷",divideontimes:"⋇",divonx:"⋇",DJcy:"Ђ",djcy:"ђ",dlcorn:"⌞",dlcrop:"⌍",dollar:"$",Dopf:"𝔻",dopf:"𝕕",Dot:"¨",dot:"˙",DotDot:"⃜",doteq:"≐",doteqdot:"≑",DotEqual:"≐",dotminus:"∸",dotplus:"∔",dotsquare:"⊡",doublebarwedge:"⌆",DoubleContourIntegral:"∯",DoubleDot:"¨",DoubleDownArrow:"⇓",DoubleLeftArrow:"⇐",DoubleLeftRightArrow:"⇔",DoubleLeftTee:"⫤",DoubleLongLeftArrow:"⟸",DoubleLongLeftRightArrow:"⟺",DoubleLongRightArrow:"⟹",DoubleRightArrow:"⇒",DoubleRightTee:"⊨",DoubleUpArrow:"⇑",DoubleUpDownArrow:"⇕",DoubleVerticalBar:"∥",DownArrow:"↓",Downarrow:"⇓",downarrow:"↓",DownArrowBar:"⤓",DownArrowUpArrow:"⇵",DownBreve:"̑",downdownarrows:"⇊",downharpoonleft:"⇃",downharpoonright:"⇂",DownLeftRightVector:"⥐",DownLeftTeeVector:"⥞",DownLeftVector:"↽",DownLeftVectorBar:"⥖",DownRightTeeVector:"⥟",DownRightVector:"⇁",DownRightVectorBar:"⥗",DownTee:"⊤",DownTeeArrow:"↧",drbkarow:"⤐",drcorn:"⌟",drcrop:"⌌",Dscr:"𝒟",dscr:"𝒹",DScy:"Ѕ",dscy:"ѕ",dsol:"⧶",Dstrok:"Đ",dstrok:"đ",dtdot:"⋱",dtri:"▿",dtrif:"▾",duarr:"⇵",duhar:"⥯",dwangle:"⦦",DZcy:"Џ",dzcy:"џ",dzigrarr:"⟿",Eacute:"É",eacute:"é",easter:"⩮",Ecaron:"Ě",ecaron:"ě",ecir:"≖",Ecirc:"Ê",ecirc:"ê",ecolon:"≕",Ecy:"Э",ecy:"э",eDDot:"⩷",Edot:"Ė",eDot:"≑",edot:"ė",ee:"ⅇ",efDot:"≒",Efr:"𝔈",efr:"𝔢",eg:"⪚",Egrave:"È",egrave:"è",egs:"⪖",egsdot:"⪘",el:"⪙",Element:"∈",elinters:"⏧",ell:"ℓ",els:"⪕",elsdot:"⪗",Emacr:"Ē",emacr:"ē",empty:"∅",emptyset:"∅",EmptySmallSquare:"◻",emptyv:"∅",EmptyVerySmallSquare:"▫",emsp:" ",emsp13:" ",emsp14:" ",ENG:"Ŋ",eng:"ŋ",ensp:" ",Eogon:"Ę",eogon:"ę",Eopf:"𝔼",eopf:"𝕖",epar:"⋕",eparsl:"⧣",eplus:"⩱",epsi:"ε",Epsilon:"Ε",epsilon:"ε",epsiv:"ϵ",eqcirc:"≖",eqcolon:"≕",eqsim:"≂",eqslantgtr:"⪖",eqslantless:"⪕",Equal:"⩵",equals:"=",EqualTilde:"≂",equest:"≟",Equilibrium:"⇌",equiv:"≡",equivDD:"⩸",eqvparsl:"⧥",erarr:"⥱",erDot:"≓",Escr:"ℰ",escr:"ℯ",esdot:"≐",Esim:"⩳",esim:"≂",Eta:"Η",eta:"η",ETH:"Ð",eth:"ð",Euml:"Ë",euml:"ë",euro:"€",excl:"!",exist:"∃",Exists:"∃",expectation:"ℰ",ExponentialE:"ⅇ",exponentiale:"ⅇ",fallingdotseq:"≒",Fcy:"Ф",fcy:"ф",female:"♀",ffilig:"ffi",fflig:"ff",ffllig:"ffl",Ffr:"𝔉",ffr:"𝔣",filig:"fi",FilledSmallSquare:"◼",FilledVerySmallSquare:"▪",fjlig:"fj",flat:"♭",fllig:"fl",fltns:"▱",fnof:"ƒ",Fopf:"𝔽",fopf:"𝕗",ForAll:"∀",forall:"∀",fork:"⋔",forkv:"⫙",Fouriertrf:"ℱ",fpartint:"⨍",frac12:"½",frac13:"⅓",frac14:"¼",frac15:"⅕",frac16:"⅙",frac18:"⅛",frac23:"⅔",frac25:"⅖",frac34:"¾",frac35:"⅗",frac38:"⅜",frac45:"⅘",frac56:"⅚",frac58:"⅝",frac78:"⅞",frasl:"⁄",frown:"⌢",Fscr:"ℱ",fscr:"𝒻",gacute:"ǵ",Gamma:"Γ",gamma:"γ",Gammad:"Ϝ",gammad:"ϝ",gap:"⪆",Gbreve:"Ğ",gbreve:"ğ",Gcedil:"Ģ",Gcirc:"Ĝ",gcirc:"ĝ",Gcy:"Г",gcy:"г",Gdot:"Ġ",gdot:"ġ",gE:"≧",ge:"≥",gEl:"⪌",gel:"⋛",geq:"≥",geqq:"≧",geqslant:"⩾",ges:"⩾",gescc:"⪩",gesdot:"⪀",gesdoto:"⪂",gesdotol:"⪄",gesl:"⋛︀",gesles:"⪔",Gfr:"𝔊",gfr:"𝔤",Gg:"⋙",gg:"≫",ggg:"⋙",gimel:"ℷ",GJcy:"Ѓ",gjcy:"ѓ",gl:"≷",gla:"⪥",glE:"⪒",glj:"⪤",gnap:"⪊",gnapprox:"⪊",gnE:"≩",gne:"⪈",gneq:"⪈",gneqq:"≩",gnsim:"⋧",Gopf:"𝔾",gopf:"𝕘",grave:"`",GreaterEqual:"≥",GreaterEqualLess:"⋛",GreaterFullEqual:"≧",GreaterGreater:"⪢",GreaterLess:"≷",GreaterSlantEqual:"⩾",GreaterTilde:"≳",Gscr:"𝒢",gscr:"ℊ",gsim:"≳",gsime:"⪎",gsiml:"⪐",Gt:"≫",GT:">",gt:">",gtcc:"⪧",gtcir:"⩺",gtdot:"⋗",gtlPar:"⦕",gtquest:"⩼",gtrapprox:"⪆",gtrarr:"⥸",gtrdot:"⋗",gtreqless:"⋛",gtreqqless:"⪌",gtrless:"≷",gtrsim:"≳",gvertneqq:"≩︀",gvnE:"≩︀",Hacek:"ˇ",hairsp:" ",half:"½",hamilt:"ℋ",HARDcy:"Ъ",hardcy:"ъ",hArr:"⇔",harr:"↔",harrcir:"⥈",harrw:"↭",Hat:"^",hbar:"ℏ",Hcirc:"Ĥ",hcirc:"ĥ",hearts:"♥",heartsuit:"♥",hellip:"…",hercon:"⊹",Hfr:"ℌ",hfr:"𝔥",HilbertSpace:"ℋ",hksearow:"⤥",hkswarow:"⤦",hoarr:"⇿",homtht:"∻",hookleftarrow:"↩",hookrightarrow:"↪",Hopf:"ℍ",hopf:"𝕙",horbar:"―",HorizontalLine:"─",Hscr:"ℋ",hscr:"𝒽",hslash:"ℏ",Hstrok:"Ħ",hstrok:"ħ",HumpDownHump:"≎",HumpEqual:"≏",hybull:"⁃",hyphen:"‐",Iacute:"Í",iacute:"í",ic:"⁣",Icirc:"Î",icirc:"î",Icy:"И",icy:"и",Idot:"İ",IEcy:"Е",iecy:"е",iexcl:"¡",iff:"⇔",Ifr:"ℑ",ifr:"𝔦",Igrave:"Ì",igrave:"ì",ii:"ⅈ",iiiint:"⨌",iiint:"∭",iinfin:"⧜",iiota:"℩",IJlig:"IJ",ijlig:"ij",Im:"ℑ",Imacr:"Ī",imacr:"ī",image:"ℑ",ImaginaryI:"ⅈ",imagline:"ℐ",imagpart:"ℑ",imath:"ı",imof:"⊷",imped:"Ƶ",Implies:"⇒",in:"∈",incare:"℅",infin:"∞",infintie:"⧝",inodot:"ı",Int:"∬",int:"∫",intcal:"⊺",integers:"ℤ",Integral:"∫",intercal:"⊺",Intersection:"⋂",intlarhk:"⨗",intprod:"⨼",InvisibleComma:"⁣",InvisibleTimes:"⁢",IOcy:"Ё",iocy:"ё",Iogon:"Į",iogon:"į",Iopf:"𝕀",iopf:"𝕚",Iota:"Ι",iota:"ι",iprod:"⨼",iquest:"¿",Iscr:"ℐ",iscr:"𝒾",isin:"∈",isindot:"⋵",isinE:"⋹",isins:"⋴",isinsv:"⋳",isinv:"∈",it:"⁢",Itilde:"Ĩ",itilde:"ĩ",Iukcy:"І",iukcy:"і",Iuml:"Ï",iuml:"ï",Jcirc:"Ĵ",jcirc:"ĵ",Jcy:"Й",jcy:"й",Jfr:"𝔍",jfr:"𝔧",jmath:"ȷ",Jopf:"𝕁",jopf:"𝕛",Jscr:"𝒥",jscr:"𝒿",Jsercy:"Ј",jsercy:"ј",Jukcy:"Є",jukcy:"є",Kappa:"Κ",kappa:"κ",kappav:"ϰ",Kcedil:"Ķ",kcedil:"ķ",Kcy:"К",kcy:"к",Kfr:"𝔎",kfr:"𝔨",kgreen:"ĸ",KHcy:"Х",khcy:"х",KJcy:"Ќ",kjcy:"ќ",Kopf:"𝕂",kopf:"𝕜",Kscr:"𝒦",kscr:"𝓀",lAarr:"⇚",Lacute:"Ĺ",lacute:"ĺ",laemptyv:"⦴",lagran:"ℒ",Lambda:"Λ",lambda:"λ",Lang:"⟪",lang:"⟨",langd:"⦑",langle:"⟨",lap:"⪅",Laplacetrf:"ℒ",laquo:"«",Larr:"↞",lArr:"⇐",larr:"←",larrb:"⇤",larrbfs:"⤟",larrfs:"⤝",larrhk:"↩",larrlp:"↫",larrpl:"⤹",larrsim:"⥳",larrtl:"↢",lat:"⪫",lAtail:"⤛",latail:"⤙",late:"⪭",lates:"⪭︀",lBarr:"⤎",lbarr:"⤌",lbbrk:"❲",lbrace:"{",lbrack:"[",lbrke:"⦋",lbrksld:"⦏",lbrkslu:"⦍",Lcaron:"Ľ",lcaron:"ľ",Lcedil:"Ļ",lcedil:"ļ",lceil:"⌈",lcub:"{",Lcy:"Л",lcy:"л",ldca:"⤶",ldquo:"“",ldquor:"„",ldrdhar:"⥧",ldrushar:"⥋",ldsh:"↲",lE:"≦",le:"≤",LeftAngleBracket:"⟨",LeftArrow:"←",Leftarrow:"⇐",leftarrow:"←",LeftArrowBar:"⇤",LeftArrowRightArrow:"⇆",leftarrowtail:"↢",LeftCeiling:"⌈",LeftDoubleBracket:"⟦",LeftDownTeeVector:"⥡",LeftDownVector:"⇃",LeftDownVectorBar:"⥙",LeftFloor:"⌊",leftharpoondown:"↽",leftharpoonup:"↼",leftleftarrows:"⇇",LeftRightArrow:"↔",Leftrightarrow:"⇔",leftrightarrow:"↔",leftrightarrows:"⇆",leftrightharpoons:"⇋",leftrightsquigarrow:"↭",LeftRightVector:"⥎",LeftTee:"⊣",LeftTeeArrow:"↤",LeftTeeVector:"⥚",leftthreetimes:"⋋",LeftTriangle:"⊲",LeftTriangleBar:"⧏",LeftTriangleEqual:"⊴",LeftUpDownVector:"⥑",LeftUpTeeVector:"⥠",LeftUpVector:"↿",LeftUpVectorBar:"⥘",LeftVector:"↼",LeftVectorBar:"⥒",lEg:"⪋",leg:"⋚",leq:"≤",leqq:"≦",leqslant:"⩽",les:"⩽",lescc:"⪨",lesdot:"⩿",lesdoto:"⪁",lesdotor:"⪃",lesg:"⋚︀",lesges:"⪓",lessapprox:"⪅",lessdot:"⋖",lesseqgtr:"⋚",lesseqqgtr:"⪋",LessEqualGreater:"⋚",LessFullEqual:"≦",LessGreater:"≶",lessgtr:"≶",LessLess:"⪡",lesssim:"≲",LessSlantEqual:"⩽",LessTilde:"≲",lfisht:"⥼",lfloor:"⌊",Lfr:"𝔏",lfr:"𝔩",lg:"≶",lgE:"⪑",lHar:"⥢",lhard:"↽",lharu:"↼",lharul:"⥪",lhblk:"▄",LJcy:"Љ",ljcy:"љ",Ll:"⋘",ll:"≪",llarr:"⇇",llcorner:"⌞",Lleftarrow:"⇚",llhard:"⥫",lltri:"◺",Lmidot:"Ŀ",lmidot:"ŀ",lmoust:"⎰",lmoustache:"⎰",lnap:"⪉",lnapprox:"⪉",lnE:"≨",lne:"⪇",lneq:"⪇",lneqq:"≨",lnsim:"⋦",loang:"⟬",loarr:"⇽",lobrk:"⟦",LongLeftArrow:"⟵",Longleftarrow:"⟸",longleftarrow:"⟵",LongLeftRightArrow:"⟷",Longleftrightarrow:"⟺",longleftrightarrow:"⟷",longmapsto:"⟼",LongRightArrow:"⟶",Longrightarrow:"⟹",longrightarrow:"⟶",looparrowleft:"↫",looparrowright:"↬",lopar:"⦅",Lopf:"𝕃",lopf:"𝕝",loplus:"⨭",lotimes:"⨴",lowast:"∗",lowbar:"_",LowerLeftArrow:"↙",LowerRightArrow:"↘",loz:"◊",lozenge:"◊",lozf:"⧫",lpar:"(",lparlt:"⦓",lrarr:"⇆",lrcorner:"⌟",lrhar:"⇋",lrhard:"⥭",lrm:"‎",lrtri:"⊿",lsaquo:"‹",Lscr:"ℒ",lscr:"𝓁",Lsh:"↰",lsh:"↰",lsim:"≲",lsime:"⪍",lsimg:"⪏",lsqb:"[",lsquo:"‘",lsquor:"‚",Lstrok:"Ł",lstrok:"ł",Lt:"≪",LT:"<",lt:"<",ltcc:"⪦",ltcir:"⩹",ltdot:"⋖",lthree:"⋋",ltimes:"⋉",ltlarr:"⥶",ltquest:"⩻",ltri:"◃",ltrie:"⊴",ltrif:"◂",ltrPar:"⦖",lurdshar:"⥊",luruhar:"⥦",lvertneqq:"≨︀",lvnE:"≨︀",macr:"¯",male:"♂",malt:"✠",maltese:"✠",Map:"⤅",map:"↦",mapsto:"↦",mapstodown:"↧",mapstoleft:"↤",mapstoup:"↥",marker:"▮",mcomma:"⨩",Mcy:"М",mcy:"м",mdash:"—",mDDot:"∺",measuredangle:"∡",MediumSpace:" ",Mellintrf:"ℳ",Mfr:"𝔐",mfr:"𝔪",mho:"℧",micro:"µ",mid:"∣",midast:"*",midcir:"⫰",middot:"·",minus:"−",minusb:"⊟",minusd:"∸",minusdu:"⨪",MinusPlus:"∓",mlcp:"⫛",mldr:"…",mnplus:"∓",models:"⊧",Mopf:"𝕄",mopf:"𝕞",mp:"∓",Mscr:"ℳ",mscr:"𝓂",mstpos:"∾",Mu:"Μ",mu:"μ",multimap:"⊸",mumap:"⊸",nabla:"∇",Nacute:"Ń",nacute:"ń",nang:"∠⃒",nap:"≉",napE:"⩰̸",napid:"≋̸",napos:"ʼn",napprox:"≉",natur:"♮",natural:"♮",naturals:"ℕ",nbsp:" ",nbump:"≎̸",nbumpe:"≏̸",ncap:"⩃",Ncaron:"Ň",ncaron:"ň",Ncedil:"Ņ",ncedil:"ņ",ncong:"≇",ncongdot:"⩭̸",ncup:"⩂",Ncy:"Н",ncy:"н",ndash:"–",ne:"≠",nearhk:"⤤",neArr:"⇗",nearr:"↗",nearrow:"↗",nedot:"≐̸",NegativeMediumSpace:"​",NegativeThickSpace:"​",NegativeThinSpace:"​",NegativeVeryThinSpace:"​",nequiv:"≢",nesear:"⤨",nesim:"≂̸",NestedGreaterGreater:"≫",NestedLessLess:"≪",NewLine:"\n",nexist:"∄",nexists:"∄",Nfr:"𝔑",nfr:"𝔫",ngE:"≧̸",nge:"≱",ngeq:"≱",ngeqq:"≧̸",ngeqslant:"⩾̸",nges:"⩾̸",nGg:"⋙̸",ngsim:"≵",nGt:"≫⃒",ngt:"≯",ngtr:"≯",nGtv:"≫̸",nhArr:"⇎",nharr:"↮",nhpar:"⫲",ni:"∋",nis:"⋼",nisd:"⋺",niv:"∋",NJcy:"Њ",njcy:"њ",nlArr:"⇍",nlarr:"↚",nldr:"‥",nlE:"≦̸",nle:"≰",nLeftarrow:"⇍",nleftarrow:"↚",nLeftrightarrow:"⇎",nleftrightarrow:"↮",nleq:"≰",nleqq:"≦̸",nleqslant:"⩽̸",nles:"⩽̸",nless:"≮",nLl:"⋘̸",nlsim:"≴",nLt:"≪⃒",nlt:"≮",nltri:"⋪",nltrie:"⋬",nLtv:"≪̸",nmid:"∤",NoBreak:"⁠",NonBreakingSpace:" ",Nopf:"ℕ",nopf:"𝕟",Not:"⫬",not:"¬",NotCongruent:"≢",NotCupCap:"≭",NotDoubleVerticalBar:"∦",NotElement:"∉",NotEqual:"≠",NotEqualTilde:"≂̸",NotExists:"∄",NotGreater:"≯",NotGreaterEqual:"≱",NotGreaterFullEqual:"≧̸",NotGreaterGreater:"≫̸",NotGreaterLess:"≹",NotGreaterSlantEqual:"⩾̸",NotGreaterTilde:"≵",NotHumpDownHump:"≎̸",NotHumpEqual:"≏̸",notin:"∉",notindot:"⋵̸",notinE:"⋹̸",notinva:"∉",notinvb:"⋷",notinvc:"⋶",NotLeftTriangle:"⋪",NotLeftTriangleBar:"⧏̸",NotLeftTriangleEqual:"⋬",NotLess:"≮",NotLessEqual:"≰",NotLessGreater:"≸",NotLessLess:"≪̸",NotLessSlantEqual:"⩽̸",NotLessTilde:"≴",NotNestedGreaterGreater:"⪢̸",NotNestedLessLess:"⪡̸",notni:"∌",notniva:"∌",notnivb:"⋾",notnivc:"⋽",NotPrecedes:"⊀",NotPrecedesEqual:"⪯̸",NotPrecedesSlantEqual:"⋠",NotReverseElement:"∌",NotRightTriangle:"⋫",NotRightTriangleBar:"⧐̸",NotRightTriangleEqual:"⋭",NotSquareSubset:"⊏̸",NotSquareSubsetEqual:"⋢",NotSquareSuperset:"⊐̸",NotSquareSupersetEqual:"⋣",NotSubset:"⊂⃒",NotSubsetEqual:"⊈",NotSucceeds:"⊁",NotSucceedsEqual:"⪰̸",NotSucceedsSlantEqual:"⋡",NotSucceedsTilde:"≿̸",NotSuperset:"⊃⃒",NotSupersetEqual:"⊉",NotTilde:"≁",NotTildeEqual:"≄",NotTildeFullEqual:"≇",NotTildeTilde:"≉",NotVerticalBar:"∤",npar:"∦",nparallel:"∦",nparsl:"⫽⃥",npart:"∂̸",npolint:"⨔",npr:"⊀",nprcue:"⋠",npre:"⪯̸",nprec:"⊀",npreceq:"⪯̸",nrArr:"⇏",nrarr:"↛",nrarrc:"⤳̸",nrarrw:"↝̸",nRightarrow:"⇏",nrightarrow:"↛",nrtri:"⋫",nrtrie:"⋭",nsc:"⊁",nsccue:"⋡",nsce:"⪰̸",Nscr:"𝒩",nscr:"𝓃",nshortmid:"∤",nshortparallel:"∦",nsim:"≁",nsime:"≄",nsimeq:"≄",nsmid:"∤",nspar:"∦",nsqsube:"⋢",nsqsupe:"⋣",nsub:"⊄",nsubE:"⫅̸",nsube:"⊈",nsubset:"⊂⃒",nsubseteq:"⊈",nsubseteqq:"⫅̸",nsucc:"⊁",nsucceq:"⪰̸",nsup:"⊅",nsupE:"⫆̸",nsupe:"⊉",nsupset:"⊃⃒",nsupseteq:"⊉",nsupseteqq:"⫆̸",ntgl:"≹",Ntilde:"Ñ",ntilde:"ñ",ntlg:"≸",ntriangleleft:"⋪",ntrianglelefteq:"⋬",ntriangleright:"⋫",ntrianglerighteq:"⋭",Nu:"Ν",nu:"ν",num:"#",numero:"№",numsp:" ",nvap:"≍⃒",nVDash:"⊯",nVdash:"⊮",nvDash:"⊭",nvdash:"⊬",nvge:"≥⃒",nvgt:">⃒",nvHarr:"⤄",nvinfin:"⧞",nvlArr:"⤂",nvle:"≤⃒",nvlt:"<⃒",nvltrie:"⊴⃒",nvrArr:"⤃",nvrtrie:"⊵⃒",nvsim:"∼⃒",nwarhk:"⤣",nwArr:"⇖",nwarr:"↖",nwarrow:"↖",nwnear:"⤧",Oacute:"Ó",oacute:"ó",oast:"⊛",ocir:"⊚",Ocirc:"Ô",ocirc:"ô",Ocy:"О",ocy:"о",odash:"⊝",Odblac:"Ő",odblac:"ő",odiv:"⨸",odot:"⊙",odsold:"⦼",OElig:"Œ",oelig:"œ",ofcir:"⦿",Ofr:"𝔒",ofr:"𝔬",ogon:"˛",Ograve:"Ò",ograve:"ò",ogt:"⧁",ohbar:"⦵",ohm:"Ω",oint:"∮",olarr:"↺",olcir:"⦾",olcross:"⦻",oline:"‾",olt:"⧀",Omacr:"Ō",omacr:"ō",Omega:"Ω",omega:"ω",Omicron:"Ο",omicron:"ο",omid:"⦶",ominus:"⊖",Oopf:"𝕆",oopf:"𝕠",opar:"⦷",OpenCurlyDoubleQuote:"“",OpenCurlyQuote:"‘",operp:"⦹",oplus:"⊕",Or:"⩔",or:"∨",orarr:"↻",ord:"⩝",order:"ℴ",orderof:"ℴ",ordf:"ª",ordm:"º",origof:"⊶",oror:"⩖",orslope:"⩗",orv:"⩛",oS:"Ⓢ",Oscr:"𝒪",oscr:"ℴ",Oslash:"Ø",oslash:"ø",osol:"⊘",Otilde:"Õ",otilde:"õ",Otimes:"⨷",otimes:"⊗",otimesas:"⨶",Ouml:"Ö",ouml:"ö",ovbar:"⌽",OverBar:"‾",OverBrace:"⏞",OverBracket:"⎴",OverParenthesis:"⏜",par:"∥",para:"¶",parallel:"∥",parsim:"⫳",parsl:"⫽",part:"∂",PartialD:"∂",Pcy:"П",pcy:"п",percnt:"%",period:".",permil:"‰",perp:"⊥",pertenk:"‱",Pfr:"𝔓",pfr:"𝔭",Phi:"Φ",phi:"φ",phiv:"ϕ",phmmat:"ℳ",phone:"☎",Pi:"Π",pi:"π",pitchfork:"⋔",piv:"ϖ",planck:"ℏ",planckh:"ℎ",plankv:"ℏ",plus:"+",plusacir:"⨣",plusb:"⊞",pluscir:"⨢",plusdo:"∔",plusdu:"⨥",pluse:"⩲",PlusMinus:"±",plusmn:"±",plussim:"⨦",plustwo:"⨧",pm:"±",Poincareplane:"ℌ",pointint:"⨕",Popf:"ℙ",popf:"𝕡",pound:"£",Pr:"⪻",pr:"≺",prap:"⪷",prcue:"≼",prE:"⪳",pre:"⪯",prec:"≺",precapprox:"⪷",preccurlyeq:"≼",Precedes:"≺",PrecedesEqual:"⪯",PrecedesSlantEqual:"≼",PrecedesTilde:"≾",preceq:"⪯",precnapprox:"⪹",precneqq:"⪵",precnsim:"⋨",precsim:"≾",Prime:"″",prime:"′",primes:"ℙ",prnap:"⪹",prnE:"⪵",prnsim:"⋨",prod:"∏",Product:"∏",profalar:"⌮",profline:"⌒",profsurf:"⌓",prop:"∝",Proportion:"∷",Proportional:"∝",propto:"∝",prsim:"≾",prurel:"⊰",Pscr:"𝒫",pscr:"𝓅",Psi:"Ψ",psi:"ψ",puncsp:" ",Qfr:"𝔔",qfr:"𝔮",qint:"⨌",Qopf:"ℚ",qopf:"𝕢",qprime:"⁗",Qscr:"𝒬",qscr:"𝓆",quaternions:"ℍ",quatint:"⨖",quest:"?",questeq:"≟",QUOT:'"',quot:'"',rAarr:"⇛",race:"∽̱",Racute:"Ŕ",racute:"ŕ",radic:"√",raemptyv:"⦳",Rang:"⟫",rang:"⟩",rangd:"⦒",range:"⦥",rangle:"⟩",raquo:"»",Rarr:"↠",rArr:"⇒",rarr:"→",rarrap:"⥵",rarrb:"⇥",rarrbfs:"⤠",rarrc:"⤳",rarrfs:"⤞",rarrhk:"↪",rarrlp:"↬",rarrpl:"⥅",rarrsim:"⥴",Rarrtl:"⤖",rarrtl:"↣",rarrw:"↝",rAtail:"⤜",ratail:"⤚",ratio:"∶",rationals:"ℚ",RBarr:"⤐",rBarr:"⤏",rbarr:"⤍",rbbrk:"❳",rbrace:"}",rbrack:"]",rbrke:"⦌",rbrksld:"⦎",rbrkslu:"⦐",Rcaron:"Ř",rcaron:"ř",Rcedil:"Ŗ",rcedil:"ŗ",rceil:"⌉",rcub:"}",Rcy:"Р",rcy:"р",rdca:"⤷",rdldhar:"⥩",rdquo:"”",rdquor:"”",rdsh:"↳",Re:"ℜ",real:"ℜ",realine:"ℛ",realpart:"ℜ",reals:"ℝ",rect:"▭",REG:"®",reg:"®",ReverseElement:"∋",ReverseEquilibrium:"⇋",ReverseUpEquilibrium:"⥯",rfisht:"⥽",rfloor:"⌋",Rfr:"ℜ",rfr:"𝔯",rHar:"⥤",rhard:"⇁",rharu:"⇀",rharul:"⥬",Rho:"Ρ",rho:"ρ",rhov:"ϱ",RightAngleBracket:"⟩",RightArrow:"→",Rightarrow:"⇒",rightarrow:"→",RightArrowBar:"⇥",RightArrowLeftArrow:"⇄",rightarrowtail:"↣",RightCeiling:"⌉",RightDoubleBracket:"⟧",RightDownTeeVector:"⥝",RightDownVector:"⇂",RightDownVectorBar:"⥕",RightFloor:"⌋",rightharpoondown:"⇁",rightharpoonup:"⇀",rightleftarrows:"⇄",rightleftharpoons:"⇌",rightrightarrows:"⇉",rightsquigarrow:"↝",RightTee:"⊢",RightTeeArrow:"↦",RightTeeVector:"⥛",rightthreetimes:"⋌",RightTriangle:"⊳",RightTriangleBar:"⧐",RightTriangleEqual:"⊵",RightUpDownVector:"⥏",RightUpTeeVector:"⥜",RightUpVector:"↾",RightUpVectorBar:"⥔",RightVector:"⇀",RightVectorBar:"⥓",ring:"˚",risingdotseq:"≓",rlarr:"⇄",rlhar:"⇌",rlm:"‏",rmoust:"⎱",rmoustache:"⎱",rnmid:"⫮",roang:"⟭",roarr:"⇾",robrk:"⟧",ropar:"⦆",Ropf:"ℝ",ropf:"𝕣",roplus:"⨮",rotimes:"⨵",RoundImplies:"⥰",rpar:")",rpargt:"⦔",rppolint:"⨒",rrarr:"⇉",Rrightarrow:"⇛",rsaquo:"›",Rscr:"ℛ",rscr:"𝓇",Rsh:"↱",rsh:"↱",rsqb:"]",rsquo:"’",rsquor:"’",rthree:"⋌",rtimes:"⋊",rtri:"▹",rtrie:"⊵",rtrif:"▸",rtriltri:"⧎",RuleDelayed:"⧴",ruluhar:"⥨",rx:"℞",Sacute:"Ś",sacute:"ś",sbquo:"‚",Sc:"⪼",sc:"≻",scap:"⪸",Scaron:"Š",scaron:"š",sccue:"≽",scE:"⪴",sce:"⪰",Scedil:"Ş",scedil:"ş",Scirc:"Ŝ",scirc:"ŝ",scnap:"⪺",scnE:"⪶",scnsim:"⋩",scpolint:"⨓",scsim:"≿",Scy:"С",scy:"с",sdot:"⋅",sdotb:"⊡",sdote:"⩦",searhk:"⤥",seArr:"⇘",searr:"↘",searrow:"↘",sect:"§",semi:";",seswar:"⤩",setminus:"∖",setmn:"∖",sext:"✶",Sfr:"𝔖",sfr:"𝔰",sfrown:"⌢",sharp:"♯",SHCHcy:"Щ",shchcy:"щ",SHcy:"Ш",shcy:"ш",ShortDownArrow:"↓",ShortLeftArrow:"←",shortmid:"∣",shortparallel:"∥",ShortRightArrow:"→",ShortUpArrow:"↑",shy:"­",Sigma:"Σ",sigma:"σ",sigmaf:"ς",sigmav:"ς",sim:"∼",simdot:"⩪",sime:"≃",simeq:"≃",simg:"⪞",simgE:"⪠",siml:"⪝",simlE:"⪟",simne:"≆",simplus:"⨤",simrarr:"⥲",slarr:"←",SmallCircle:"∘",smallsetminus:"∖",smashp:"⨳",smeparsl:"⧤",smid:"∣",smile:"⌣",smt:"⪪",smte:"⪬",smtes:"⪬︀",SOFTcy:"Ь",softcy:"ь",sol:"/",solb:"⧄",solbar:"⌿",Sopf:"𝕊",sopf:"𝕤",spades:"♠",spadesuit:"♠",spar:"∥",sqcap:"⊓",sqcaps:"⊓︀",sqcup:"⊔",sqcups:"⊔︀",Sqrt:"√",sqsub:"⊏",sqsube:"⊑",sqsubset:"⊏",sqsubseteq:"⊑",sqsup:"⊐",sqsupe:"⊒",sqsupset:"⊐",sqsupseteq:"⊒",squ:"□",Square:"□",square:"□",SquareIntersection:"⊓",SquareSubset:"⊏",SquareSubsetEqual:"⊑",SquareSuperset:"⊐",SquareSupersetEqual:"⊒",SquareUnion:"⊔",squarf:"▪",squf:"▪",srarr:"→",Sscr:"𝒮",sscr:"𝓈",ssetmn:"∖",ssmile:"⌣",sstarf:"⋆",Star:"⋆",star:"☆",starf:"★",straightepsilon:"ϵ",straightphi:"ϕ",strns:"¯",Sub:"⋐",sub:"⊂",subdot:"⪽",subE:"⫅",sube:"⊆",subedot:"⫃",submult:"⫁",subnE:"⫋",subne:"⊊",subplus:"⪿",subrarr:"⥹",Subset:"⋐",subset:"⊂",subseteq:"⊆",subseteqq:"⫅",SubsetEqual:"⊆",subsetneq:"⊊",subsetneqq:"⫋",subsim:"⫇",subsub:"⫕",subsup:"⫓",succ:"≻",succapprox:"⪸",succcurlyeq:"≽",Succeeds:"≻",SucceedsEqual:"⪰",SucceedsSlantEqual:"≽",SucceedsTilde:"≿",succeq:"⪰",succnapprox:"⪺",succneqq:"⪶",succnsim:"⋩",succsim:"≿",SuchThat:"∋",Sum:"∑",sum:"∑",sung:"♪",Sup:"⋑",sup:"⊃",sup1:"¹",sup2:"²",sup3:"³",supdot:"⪾",supdsub:"⫘",supE:"⫆",supe:"⊇",supedot:"⫄",Superset:"⊃",SupersetEqual:"⊇",suphsol:"⟉",suphsub:"⫗",suplarr:"⥻",supmult:"⫂",supnE:"⫌",supne:"⊋",supplus:"⫀",Supset:"⋑",supset:"⊃",supseteq:"⊇",supseteqq:"⫆",supsetneq:"⊋",supsetneqq:"⫌",supsim:"⫈",supsub:"⫔",supsup:"⫖",swarhk:"⤦",swArr:"⇙",swarr:"↙",swarrow:"↙",swnwar:"⤪",szlig:"ß",Tab:"\t",target:"⌖",Tau:"Τ",tau:"τ",tbrk:"⎴",Tcaron:"Ť",tcaron:"ť",Tcedil:"Ţ",tcedil:"ţ",Tcy:"Т",tcy:"т",tdot:"⃛",telrec:"⌕",Tfr:"𝔗",tfr:"𝔱",there4:"∴",Therefore:"∴",therefore:"∴",Theta:"Θ",theta:"θ",thetasym:"ϑ",thetav:"ϑ",thickapprox:"≈",thicksim:"∼",ThickSpace:"  ",thinsp:" ",ThinSpace:" ",thkap:"≈",thksim:"∼",THORN:"Þ",thorn:"þ",Tilde:"∼",tilde:"˜",TildeEqual:"≃",TildeFullEqual:"≅",TildeTilde:"≈",times:"×",timesb:"⊠",timesbar:"⨱",timesd:"⨰",tint:"∭",toea:"⤨",top:"⊤",topbot:"⌶",topcir:"⫱",Topf:"𝕋",topf:"𝕥",topfork:"⫚",tosa:"⤩",tprime:"‴",TRADE:"™",trade:"™",triangle:"▵",triangledown:"▿",triangleleft:"◃",trianglelefteq:"⊴",triangleq:"≜",triangleright:"▹",trianglerighteq:"⊵",tridot:"◬",trie:"≜",triminus:"⨺",TripleDot:"⃛",triplus:"⨹",trisb:"⧍",tritime:"⨻",trpezium:"⏢",Tscr:"𝒯",tscr:"𝓉",TScy:"Ц",tscy:"ц",TSHcy:"Ћ",tshcy:"ћ",Tstrok:"Ŧ",tstrok:"ŧ",twixt:"≬",twoheadleftarrow:"↞",twoheadrightarrow:"↠",Uacute:"Ú",uacute:"ú",Uarr:"↟",uArr:"⇑",uarr:"↑",Uarrocir:"⥉",Ubrcy:"Ў",ubrcy:"ў",Ubreve:"Ŭ",ubreve:"ŭ",Ucirc:"Û",ucirc:"û",Ucy:"У",ucy:"у",udarr:"⇅",Udblac:"Ű",udblac:"ű",udhar:"⥮",ufisht:"⥾",Ufr:"𝔘",ufr:"𝔲",Ugrave:"Ù",ugrave:"ù",uHar:"⥣",uharl:"↿",uharr:"↾",uhblk:"▀",ulcorn:"⌜",ulcorner:"⌜",ulcrop:"⌏",ultri:"◸",Umacr:"Ū",umacr:"ū",uml:"¨",UnderBar:"_",UnderBrace:"⏟",UnderBracket:"⎵",UnderParenthesis:"⏝",Union:"⋃",UnionPlus:"⊎",Uogon:"Ų",uogon:"ų",Uopf:"𝕌",uopf:"𝕦",UpArrow:"↑",Uparrow:"⇑",uparrow:"↑",UpArrowBar:"⤒",UpArrowDownArrow:"⇅",UpDownArrow:"↕",Updownarrow:"⇕",updownarrow:"↕",UpEquilibrium:"⥮",upharpoonleft:"↿",upharpoonright:"↾",uplus:"⊎",UpperLeftArrow:"↖",UpperRightArrow:"↗",Upsi:"ϒ",upsi:"υ",upsih:"ϒ",Upsilon:"Υ",upsilon:"υ",UpTee:"⊥",UpTeeArrow:"↥",upuparrows:"⇈",urcorn:"⌝",urcorner:"⌝",urcrop:"⌎",Uring:"Ů",uring:"ů",urtri:"◹",Uscr:"𝒰",uscr:"𝓊",utdot:"⋰",Utilde:"Ũ",utilde:"ũ",utri:"▵",utrif:"▴",uuarr:"⇈",Uuml:"Ü",uuml:"ü",uwangle:"⦧",vangrt:"⦜",varepsilon:"ϵ",varkappa:"ϰ",varnothing:"∅",varphi:"ϕ",varpi:"ϖ",varpropto:"∝",vArr:"⇕",varr:"↕",varrho:"ϱ",varsigma:"ς",varsubsetneq:"⊊︀",varsubsetneqq:"⫋︀",varsupsetneq:"⊋︀",varsupsetneqq:"⫌︀",vartheta:"ϑ",vartriangleleft:"⊲",vartriangleright:"⊳",Vbar:"⫫",vBar:"⫨",vBarv:"⫩",Vcy:"В",vcy:"в",VDash:"⊫",Vdash:"⊩",vDash:"⊨",vdash:"⊢",Vdashl:"⫦",Vee:"⋁",vee:"∨",veebar:"⊻",veeeq:"≚",vellip:"⋮",Verbar:"‖",verbar:"|",Vert:"‖",vert:"|",VerticalBar:"∣",VerticalLine:"|",VerticalSeparator:"❘",VerticalTilde:"≀",VeryThinSpace:" ",Vfr:"𝔙",vfr:"𝔳",vltri:"⊲",vnsub:"⊂⃒",vnsup:"⊃⃒",Vopf:"𝕍",vopf:"𝕧",vprop:"∝",vrtri:"⊳",Vscr:"𝒱",vscr:"𝓋",vsubnE:"⫋︀",vsubne:"⊊︀",vsupnE:"⫌︀",vsupne:"⊋︀",Vvdash:"⊪",vzigzag:"⦚",Wcirc:"Ŵ",wcirc:"ŵ",wedbar:"⩟",Wedge:"⋀",wedge:"∧",wedgeq:"≙",weierp:"℘",Wfr:"𝔚",wfr:"𝔴",Wopf:"𝕎",wopf:"𝕨",wp:"℘",wr:"≀",wreath:"≀",Wscr:"𝒲",wscr:"𝓌",xcap:"⋂",xcirc:"◯",xcup:"⋃",xdtri:"▽",Xfr:"𝔛",xfr:"𝔵",xhArr:"⟺",xharr:"⟷",Xi:"Ξ",xi:"ξ",xlArr:"⟸",xlarr:"⟵",xmap:"⟼",xnis:"⋻",xodot:"⨀",Xopf:"𝕏",xopf:"𝕩",xoplus:"⨁",xotime:"⨂",xrArr:"⟹",xrarr:"⟶",Xscr:"𝒳",xscr:"𝓍",xsqcup:"⨆",xuplus:"⨄",xutri:"△",xvee:"⋁",xwedge:"⋀",Yacute:"Ý",yacute:"ý",YAcy:"Я",yacy:"я",Ycirc:"Ŷ",ycirc:"ŷ",Ycy:"Ы",ycy:"ы",yen:"¥",Yfr:"𝔜",yfr:"𝔶",YIcy:"Ї",yicy:"ї",Yopf:"𝕐",yopf:"𝕪",Yscr:"𝒴",yscr:"𝓎",YUcy:"Ю",yucy:"ю",Yuml:"Ÿ",yuml:"ÿ",Zacute:"Ź",zacute:"ź",Zcaron:"Ž",zcaron:"ž",Zcy:"З",zcy:"з",Zdot:"Ż",zdot:"ż",zeetrf:"ℨ",ZeroWidthSpace:"​",Zeta:"Ζ",zeta:"ζ",Zfr:"ℨ",zfr:"𝔷",ZHcy:"Ж",zhcy:"ж",zigrarr:"⇝",Zopf:"ℤ",zopf:"𝕫",Zscr:"𝒵",zscr:"𝓏",zwj:"‍",zwnj:"‌"}),exports.entityMap=exports.HTML_ENTITIES}));entities.XML_ENTITIES,entities.HTML_ENTITIES,entities.entityMap;var NAMESPACE$1=conventions.NAMESPACE,nameStartChar=/[A-Z_a-z\xC0-\xD6\xD8-\xF6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]/,nameChar=new RegExp("[\\-\\.0-9"+nameStartChar.source.slice(1,-1)+"\\u00B7\\u0300-\\u036F\\u203F-\\u2040]"),tagNamePattern=new RegExp("^"+nameStartChar.source+nameChar.source+"*(?::"+nameStartChar.source+nameChar.source+"*)?$");function ParseError$1(message,locator){this.message=message,this.locator=locator,Error.captureStackTrace&&Error.captureStackTrace(this,ParseError$1)}function XMLReader$1(){}function copyLocator(f,t){return t.lineNumber=f.lineNumber,t.columnNumber=f.columnNumber,t}function parseElementStartPart(source,start,el,currentNSMap,entityReplacer,errorHandler){function addAttribute(qname,value,startIndex){el.attributeNames.hasOwnProperty(qname)&&errorHandler.fatalError("Attribute "+qname+" redefined"),el.addValue(qname,value.replace(/[\t\n\r]/g," ").replace(/&#?\w+;/g,entityReplacer),startIndex)}for(var attrName,p=++start,s=0;;){var c=source.charAt(p);switch(c){case"=":if(1===s)attrName=source.slice(start,p),s=3;else{if(2!==s)throw new Error("attribute equal must after attrName");s=3}break;case"'":case'"':if(3===s||1===s){if(1===s&&(errorHandler.warning('attribute value must after "="'),attrName=source.slice(start,p)),start=p+1,!((p=source.indexOf(c,start))>0))throw new Error("attribute value no end '"+c+"' match");addAttribute(attrName,value=source.slice(start,p),start-1),s=5}else{if(4!=s)throw new Error('attribute value must after "="');addAttribute(attrName,value=source.slice(start,p),start),errorHandler.warning('attribute "'+attrName+'" missed start quot('+c+")!!"),start=p+1,s=5}break;case"/":switch(s){case 0:el.setTagName(source.slice(start,p));case 5:case 6:case 7:s=7,el.closed=!0;case 4:case 1:break;case 2:el.closed=!0;break;default:throw new Error("attribute invalid close char('/')")}break;case"":return errorHandler.error("unexpected end of input"),0==s&&el.setTagName(source.slice(start,p)),p;case">":switch(s){case 0:el.setTagName(source.slice(start,p));case 5:case 6:case 7:break;case 4:case 1:"/"===(value=source.slice(start,p)).slice(-1)&&(el.closed=!0,value=value.slice(0,-1));case 2:2===s&&(value=attrName),4==s?(errorHandler.warning('attribute "'+value+'" missed quot(")!'),addAttribute(attrName,value,start)):(NAMESPACE$1.isHTML(currentNSMap[""])&&value.match(/^(?:disabled|checked|selected)$/i)||errorHandler.warning('attribute "'+value+'" missed value!! "'+value+'" instead!!'),addAttribute(value,value,start));break;case 3:throw new Error("attribute value missed!!")}return p;case"€":c=" ";default:if(c<=" ")switch(s){case 0:el.setTagName(source.slice(start,p)),s=6;break;case 1:attrName=source.slice(start,p),s=2;break;case 4:var value=source.slice(start,p);errorHandler.warning('attribute "'+value+'" missed quot(")!!'),addAttribute(attrName,value,start);case 5:s=6}else switch(s){case 2:el.tagName,NAMESPACE$1.isHTML(currentNSMap[""])&&attrName.match(/^(?:disabled|checked|selected)$/i)||errorHandler.warning('attribute "'+attrName+'" missed value!! "'+attrName+'" instead2!!'),addAttribute(attrName,attrName,start),start=p,s=1;break;case 5:errorHandler.warning('attribute space is required"'+attrName+'"!!');case 6:s=1,start=p;break;case 3:s=4,start=p;break;case 7:throw new Error("elements closed character '/' and '>' must be connected to")}}p++}}function appendElement$1(el,domBuilder,currentNSMap){for(var tagName=el.tagName,localNSMap=null,i=el.length;i--;){var a=el[i],qName=a.qName,value=a.value;if((nsp=qName.indexOf(":"))>0)var prefix=a.prefix=qName.slice(0,nsp),localName=qName.slice(nsp+1),nsPrefix="xmlns"===prefix&&localName;else localName=qName,prefix=null,nsPrefix="xmlns"===qName&&"";a.localName=localName,!1!==nsPrefix&&(null==localNSMap&&(localNSMap={},_copy(currentNSMap,currentNSMap={})),currentNSMap[nsPrefix]=localNSMap[nsPrefix]=value,a.uri=NAMESPACE$1.XMLNS,domBuilder.startPrefixMapping(nsPrefix,value))}for(i=el.length;i--;){(prefix=(a=el[i]).prefix)&&("xml"===prefix&&(a.uri=NAMESPACE$1.XML),"xmlns"!==prefix&&(a.uri=currentNSMap[prefix||""]))}var nsp;(nsp=tagName.indexOf(":"))>0?(prefix=el.prefix=tagName.slice(0,nsp),localName=el.localName=tagName.slice(nsp+1)):(prefix=null,localName=el.localName=tagName);var ns=el.uri=currentNSMap[prefix||""];if(domBuilder.startElement(ns,localName,tagName,el),!el.closed)return el.currentNSMap=currentNSMap,el.localNSMap=localNSMap,!0;if(domBuilder.endElement(ns,localName,tagName),localNSMap)for(prefix in localNSMap)Object.prototype.hasOwnProperty.call(localNSMap,prefix)&&domBuilder.endPrefixMapping(prefix)}function parseHtmlSpecialContent(source,elStartEnd,tagName,entityReplacer,domBuilder){if(/^(?:script|textarea)$/i.test(tagName)){var elEndStart=source.indexOf("</"+tagName+">",elStartEnd),text=source.substring(elStartEnd+1,elEndStart);if(/[&<]/.test(text))return/^script$/i.test(tagName)?(domBuilder.characters(text,0,text.length),elEndStart):(text=text.replace(/&#?\w+;/g,entityReplacer),domBuilder.characters(text,0,text.length),elEndStart)}return elStartEnd+1}function fixSelfClosed(source,elStartEnd,tagName,closeMap){var pos=closeMap[tagName];return null==pos&&((pos=source.lastIndexOf("</"+tagName+">"))<elStartEnd&&(pos=source.lastIndexOf("</"+tagName)),closeMap[tagName]=pos),pos<elStartEnd}function _copy(source,target){for(var n in source)Object.prototype.hasOwnProperty.call(source,n)&&(target[n]=source[n])}function parseDCC(source,start,domBuilder,errorHandler){if("-"===source.charAt(start+2))return"-"===source.charAt(start+3)?(end=source.indexOf("--\x3e",start+4))>start?(domBuilder.comment(source,start+4,end-start-4),end+3):(errorHandler.error("Unclosed comment"),-1):-1;if("CDATA["==source.substr(start+3,6)){var end=source.indexOf("]]>",start+9);return domBuilder.startCDATA(),domBuilder.characters(source,start+9,end-start-9),domBuilder.endCDATA(),end+3}var matchs=function(source,start){var match,buf=[],reg=/'[^']+'|"[^"]+"|[^\s<>\/=]+=?|(\/?\s*>|<)/g;reg.lastIndex=start,reg.exec(source);for(;match=reg.exec(source);)if(buf.push(match),match[1])return buf}(source,start),len=matchs.length;if(len>1&&/!doctype/i.test(matchs[0][0])){var name=matchs[1][0],pubid=!1,sysid=!1;len>3&&(/^public$/i.test(matchs[2][0])?(pubid=matchs[3][0],sysid=len>4&&matchs[4][0]):/^system$/i.test(matchs[2][0])&&(sysid=matchs[3][0]));var lastMatch=matchs[len-1];return domBuilder.startDTD(name,pubid,sysid),domBuilder.endDTD(),lastMatch.index+lastMatch[0].length}return-1}function parseInstruction(source,start,domBuilder){var end=source.indexOf("?>",start);if(end){var match=source.substring(start,end).match(/^<\?(\S*)\s*([\s\S]*?)\s*$/);return match?(match[0].length,domBuilder.processingInstruction(match[1],match[2]),end+2):-1}return-1}function ElementAttributes(){this.attributeNames={}}ParseError$1.prototype=new Error,ParseError$1.prototype.name=ParseError$1.name,XMLReader$1.prototype={parse:function(source,defaultNSMap,entityMap){var domBuilder=this.domBuilder;domBuilder.startDocument(),_copy(defaultNSMap,defaultNSMap={}),function(source,defaultNSMapCopy,entityMap,domBuilder,errorHandler){function fixedFromCharCode(code){if(code>65535){var surrogate1=55296+((code-=65536)>>10),surrogate2=56320+(1023&code);return String.fromCharCode(surrogate1,surrogate2)}return String.fromCharCode(code)}function entityReplacer(a){var k=a.slice(1,-1);return Object.hasOwnProperty.call(entityMap,k)?entityMap[k]:"#"===k.charAt(0)?fixedFromCharCode(parseInt(k.substr(1).replace("x","0x"))):(errorHandler.error("entity not found:"+a),a)}function appendText(end){if(end>start){var xt=source.substring(start,end).replace(/&#?\w+;/g,entityReplacer);locator&&position(start),domBuilder.characters(xt,0,end-start),start=end}}function position(p,m){for(;p>=lineEnd&&(m=linePattern.exec(source));)lineStart=m.index,lineEnd=lineStart+m[0].length,locator.lineNumber++;locator.columnNumber=p-lineStart+1}var lineStart=0,lineEnd=0,linePattern=/.*(?:\r\n?|\n)|.*$/g,locator=domBuilder.locator,parseStack=[{currentNSMap:defaultNSMapCopy}],closeMap={},start=0;for(;;){try{var tagStart=source.indexOf("<",start);if(tagStart<0){if(!source.substr(start).match(/^\s*$/)){var doc=domBuilder.doc,text=doc.createTextNode(source.substr(start));doc.appendChild(text),domBuilder.currentElement=text}return}switch(tagStart>start&&appendText(tagStart),source.charAt(tagStart+1)){case"/":var end=source.indexOf(">",tagStart+3),tagName=source.substring(tagStart+2,end).replace(/[ \t\n\r]+$/g,""),config=parseStack.pop();end<0?(tagName=source.substring(tagStart+2).replace(/[\s<].*/,""),errorHandler.error("end tag name: "+tagName+" is not complete:"+config.tagName),end=tagStart+1+tagName.length):tagName.match(/\s</)&&(tagName=tagName.replace(/[\s<].*/,""),errorHandler.error("end tag name: "+tagName+" maybe not complete"),end=tagStart+1+tagName.length);var localNSMap=config.localNSMap,endMatch=config.tagName==tagName;if(endMatch||config.tagName&&config.tagName.toLowerCase()==tagName.toLowerCase()){if(domBuilder.endElement(config.uri,config.localName,tagName),localNSMap)for(var prefix in localNSMap)Object.prototype.hasOwnProperty.call(localNSMap,prefix)&&domBuilder.endPrefixMapping(prefix);endMatch||errorHandler.fatalError("end tag name: "+tagName+" is not match the current start tagName:"+config.tagName)}else parseStack.push(config);end++;break;case"?":locator&&position(tagStart),end=parseInstruction(source,tagStart,domBuilder);break;case"!":locator&&position(tagStart),end=parseDCC(source,tagStart,domBuilder,errorHandler);break;default:locator&&position(tagStart);var el=new ElementAttributes,currentNSMap=parseStack[parseStack.length-1].currentNSMap,len=(end=parseElementStartPart(source,tagStart,el,currentNSMap,entityReplacer,errorHandler),el.length);if(!el.closed&&fixSelfClosed(source,end,el.tagName,closeMap)&&(el.closed=!0,entityMap.nbsp||errorHandler.warning("unclosed xml attribute")),locator&&len){for(var locator2=copyLocator(locator,{}),i=0;i<len;i++){var a=el[i];position(a.offset),a.locator=copyLocator(locator,{})}domBuilder.locator=locator2,appendElement$1(el,domBuilder,currentNSMap)&&parseStack.push(el),domBuilder.locator=locator}else appendElement$1(el,domBuilder,currentNSMap)&&parseStack.push(el);NAMESPACE$1.isHTML(el.uri)&&!el.closed?end=parseHtmlSpecialContent(source,end,el.tagName,entityReplacer,domBuilder):end++}}catch(e){if(e instanceof ParseError$1)throw e;errorHandler.error("element parse error: "+e),end=-1}end>start?start=end:appendText(Math.max(tagStart,start)+1)}}(source,defaultNSMap,entityMap,domBuilder,this.errorHandler),domBuilder.endDocument()}},ElementAttributes.prototype={setTagName:function(tagName){if(!tagNamePattern.test(tagName))throw new Error("invalid tagName:"+tagName);this.tagName=tagName},addValue:function(qName,value,offset){if(!tagNamePattern.test(qName))throw new Error("invalid attribute:"+qName);this.attributeNames[qName]=this.length,this[this.length++]={qName:qName,value:value,offset:offset}},length:0,getLocalName:function(i){return this[i].localName},getLocator:function(i){return this[i].locator},getQName:function(i){return this[i].qName},getURI:function(i){return this[i].uri},getValue:function(i){return this[i].value}};var sax={XMLReader:XMLReader$1,ParseError:ParseError$1},DOMImplementation=dom.DOMImplementation,NAMESPACE=conventions.NAMESPACE,ParseError=sax.ParseError,XMLReader=sax.XMLReader;function normalizeLineEndings(input){return input.replace(/\r[\n\u0085]/g,"\n").replace(/[\r\u0085\u2028]/g,"\n")}function DOMParser$1(options){this.options=options||{locator:{}}}function DOMHandler(){this.cdata=!1}function position(locator,node){node.lineNumber=locator.lineNumber,node.columnNumber=locator.columnNumber}function _locator(l){if(l)return"\n@"+(l.systemId||"")+"#[line:"+l.lineNumber+",col:"+l.columnNumber+"]"}function _toString(chars,start,length){return"string"==typeof chars?chars.substr(start,length):chars.length>=start+length||start?new java.lang.String(chars,start,length)+"":chars}function appendElement(hander,node){hander.currentElement?hander.currentElement.appendChild(node):hander.doc.appendChild(node)}DOMParser$1.prototype.parseFromString=function(source,mimeType){var options=this.options,sax=new XMLReader,domBuilder=options.domBuilder||new DOMHandler,errorHandler=options.errorHandler,locator=options.locator,defaultNSMap=options.xmlns||{},isHTML=/\/x?html?$/.test(mimeType),entityMap=isHTML?entities.HTML_ENTITIES:entities.XML_ENTITIES;locator&&domBuilder.setDocumentLocator(locator),sax.errorHandler=function(errorImpl,domBuilder,locator){if(!errorImpl){if(domBuilder instanceof DOMHandler)return domBuilder;errorImpl=domBuilder}var errorHandler={},isCallback=errorImpl instanceof Function;function build(key){var fn=errorImpl[key];!fn&&isCallback&&(fn=2==errorImpl.length?function(msg){errorImpl(key,msg)}:errorImpl),errorHandler[key]=fn&&function(msg){fn("[xmldom "+key+"]\t"+msg+_locator(locator))}||function(){}}return locator=locator||{},build("warning"),build("error"),build("fatalError"),errorHandler}(errorHandler,domBuilder,locator),sax.domBuilder=options.domBuilder||domBuilder,isHTML&&(defaultNSMap[""]=NAMESPACE.HTML),defaultNSMap.xml=defaultNSMap.xml||NAMESPACE.XML;var normalize=options.normalizeLineEndings||normalizeLineEndings;return source&&"string"==typeof source?sax.parse(normalize(source),defaultNSMap,entityMap):sax.errorHandler.error("invalid doc source"),domBuilder.doc},DOMHandler.prototype={startDocument:function(){this.doc=(new DOMImplementation).createDocument(null,null,null),this.locator&&(this.doc.documentURI=this.locator.systemId)},startElement:function(namespaceURI,localName,qName,attrs){var doc=this.doc,el=doc.createElementNS(namespaceURI,qName||localName),len=attrs.length;appendElement(this,el),this.currentElement=el,this.locator&&position(this.locator,el);for(var i=0;i<len;i++){namespaceURI=attrs.getURI(i);var value=attrs.getValue(i),attr=(qName=attrs.getQName(i),doc.createAttributeNS(namespaceURI,qName));this.locator&&position(attrs.getLocator(i),attr),attr.value=attr.nodeValue=value,el.setAttributeNode(attr)}},endElement:function(namespaceURI,localName,qName){var current=this.currentElement;current.tagName,this.currentElement=current.parentNode},startPrefixMapping:function(prefix,uri){},endPrefixMapping:function(prefix){},processingInstruction:function(target,data){var ins=this.doc.createProcessingInstruction(target,data);this.locator&&position(this.locator,ins),appendElement(this,ins)},ignorableWhitespace:function(ch,start,length){},characters:function(chars,start,length){if(chars=_toString.apply(this,arguments)){if(this.cdata)var charNode=this.doc.createCDATASection(chars);else charNode=this.doc.createTextNode(chars);this.currentElement?this.currentElement.appendChild(charNode):/^\s*$/.test(chars)&&this.doc.appendChild(charNode),this.locator&&position(this.locator,charNode)}},skippedEntity:function(name){},endDocument:function(){this.doc.normalize()},setDocumentLocator:function(locator){(this.locator=locator)&&(locator.lineNumber=0)},comment:function(chars,start,length){chars=_toString.apply(this,arguments);var comm=this.doc.createComment(chars);this.locator&&position(this.locator,comm),appendElement(this,comm)},startCDATA:function(){this.cdata=!0},endCDATA:function(){this.cdata=!1},startDTD:function(name,publicId,systemId){var impl=this.doc.implementation;if(impl&&impl.createDocumentType){var dt=impl.createDocumentType(name,publicId,systemId);this.locator&&position(this.locator,dt),appendElement(this,dt),this.doc.doctype=dt}},warning:function(error){console.warn("[xmldom warning]\t"+error,_locator(this.locator))},error:function(error){console.error("[xmldom error]\t"+error,_locator(this.locator))},fatalError:function(error){throw new ParseError(error,this.locator)}},"endDTD,startEntity,endEntity,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,resolveEntity,getExternalSubset,notationDecl,unparsedEntityDecl".replace(/\w+/g,(function(key){DOMHandler.prototype[key]=function(){return null}}));var DOMParser={__DOMHandler:DOMHandler,normalizeLineEndings:normalizeLineEndings,DOMParser:DOMParser$1}.DOMParser;
+/*! @name mpd-parser @version 1.3.0 @license Apache-2.0 */
+const isObject=obj=>!!obj&&"object"==typeof obj,merge$1=function(){for(var _len23=arguments.length,objects=new Array(_len23),_key23=0;_key23<_len23;_key23++)objects[_key23]=arguments[_key23];return objects.reduce(((result,source)=>("object"!=typeof source||Object.keys(source).forEach((key=>{Array.isArray(result[key])&&Array.isArray(source[key])?result[key]=result[key].concat(source[key]):isObject(result[key])&&isObject(source[key])?result[key]=merge$1(result[key],source[key]):result[key]=source[key]})),result)),{})},values=o=>Object.keys(o).map((k=>o[k])),flatten=lists=>lists.reduce(((x,y)=>x.concat(y)),[]),from=list=>{if(!list.length)return[];const result=[];for(let i=0;i<list.length;i++)result.push(list[i]);return result};var errors_INVALID_NUMBER_OF_PERIOD="INVALID_NUMBER_OF_PERIOD",errors_DASH_EMPTY_MANIFEST="DASH_EMPTY_MANIFEST",errors_DASH_INVALID_XML="DASH_INVALID_XML",errors_NO_BASE_URL="NO_BASE_URL",errors_SEGMENT_TIME_UNSPECIFIED="SEGMENT_TIME_UNSPECIFIED",errors_UNSUPPORTED_UTC_TIMING_SCHEME="UNSUPPORTED_UTC_TIMING_SCHEME";const urlTypeToSegment=_ref10=>{let{baseUrl:baseUrl="",source:source="",range:range="",indexRange:indexRange=""}=_ref10;const segment={uri:source,resolvedUri:resolveUrl$1(baseUrl||"",source)};if(range||indexRange){const ranges=(range||indexRange).split("-");let length,startRange=window.BigInt?window.BigInt(ranges[0]):parseInt(ranges[0],10),endRange=window.BigInt?window.BigInt(ranges[1]):parseInt(ranges[1],10);startRange<Number.MAX_SAFE_INTEGER&&"bigint"==typeof startRange&&(startRange=Number(startRange)),endRange<Number.MAX_SAFE_INTEGER&&"bigint"==typeof endRange&&(endRange=Number(endRange)),length="bigint"==typeof endRange||"bigint"==typeof startRange?window.BigInt(endRange)-window.BigInt(startRange)+window.BigInt(1):endRange-startRange+1,"bigint"==typeof length&&length<Number.MAX_SAFE_INTEGER&&(length=Number(length)),segment.byterange={length:length,offset:startRange}}return segment},parseEndNumber=endNumber=>(endNumber&&"number"!=typeof endNumber&&(endNumber=parseInt(endNumber,10)),isNaN(endNumber)?null:endNumber),segmentRange={static(attributes){const{duration:duration,timescale:timescale=1,sourceDuration:sourceDuration,periodDuration:periodDuration}=attributes,endNumber=parseEndNumber(attributes.endNumber),segmentDuration=duration/timescale;return"number"==typeof endNumber?{start:0,end:endNumber}:"number"==typeof periodDuration?{start:0,end:periodDuration/segmentDuration}:{start:0,end:sourceDuration/segmentDuration}},dynamic(attributes){const{NOW:NOW,clientOffset:clientOffset,availabilityStartTime:availabilityStartTime,timescale:timescale=1,duration:duration,periodStart:periodStart=0,minimumUpdatePeriod:minimumUpdatePeriod=0,timeShiftBufferDepth:timeShiftBufferDepth=1/0}=attributes,endNumber=parseEndNumber(attributes.endNumber),now=(NOW+clientOffset)/1e3,periodStartWC=availabilityStartTime+periodStart,periodDuration=now+minimumUpdatePeriod-periodStartWC,segmentCount=Math.ceil(periodDuration*timescale/duration),availableStart=Math.floor((now-periodStartWC-timeShiftBufferDepth)*timescale/duration),availableEnd=Math.floor((now-periodStartWC)*timescale/duration);return{start:Math.max(0,availableStart),end:"number"==typeof endNumber?endNumber:Math.min(segmentCount,availableEnd)}}},parseByDuration=attributes=>{const{type:type,duration:duration,timescale:timescale=1,periodDuration:periodDuration,sourceDuration:sourceDuration}=attributes,{start:start,end:end}=segmentRange[type](attributes),segments=((start,end)=>{const result=[];for(let i=start;i<end;i++)result.push(i);return result})(start,end).map((attributes=>number=>{const{duration:duration,timescale:timescale=1,periodStart:periodStart,startNumber:startNumber=1}=attributes;return{number:startNumber+number,duration:duration/timescale,timeline:periodStart,time:number*duration}})(attributes));if("static"===type){const index=segments.length-1,sectionDuration="number"==typeof periodDuration?periodDuration:sourceDuration;segments[index].duration=sectionDuration-duration/timescale*index}return segments},segmentsFromBase=attributes=>{const{baseUrl:baseUrl,initialization:initialization={},sourceDuration:sourceDuration,indexRange:indexRange="",periodStart:periodStart,presentationTime:presentationTime,number:number=0,duration:duration}=attributes;if(!baseUrl)throw new Error(errors_NO_BASE_URL);const initSegment=urlTypeToSegment({baseUrl:baseUrl,source:initialization.sourceURL,range:initialization.range}),segment=urlTypeToSegment({baseUrl:baseUrl,source:baseUrl,indexRange:indexRange});if(segment.map=initSegment,duration){const segmentTimeInfo=parseByDuration(attributes);segmentTimeInfo.length&&(segment.duration=segmentTimeInfo[0].duration,segment.timeline=segmentTimeInfo[0].timeline)}else sourceDuration&&(segment.duration=sourceDuration,segment.timeline=periodStart);return segment.presentationTime=presentationTime||periodStart,segment.number=number,[segment]},addSidxSegmentsToPlaylist$1=(playlist,sidx,baseUrl)=>{const initSegment=playlist.sidx.map?playlist.sidx.map:null,sourceDuration=playlist.sidx.duration,timeline=playlist.timeline||0,sidxByteRange=playlist.sidx.byterange,sidxEnd=sidxByteRange.offset+sidxByteRange.length,timescale=sidx.timescale,mediaReferences=sidx.references.filter((r=>1!==r.referenceType)),segments=[],type=playlist.endList?"static":"dynamic",periodStart=playlist.sidx.timeline;let startIndex,presentationTime=periodStart,number=playlist.mediaSequence||0;startIndex="bigint"==typeof sidx.firstOffset?window.BigInt(sidxEnd)+sidx.firstOffset:sidxEnd+sidx.firstOffset;for(let i=0;i<mediaReferences.length;i++){const reference=sidx.references[i],size=reference.referencedSize,duration=reference.subsegmentDuration;let endIndex;endIndex="bigint"==typeof startIndex?startIndex+window.BigInt(size)-window.BigInt(1):startIndex+size-1;const indexRange="".concat(startIndex,"-").concat(endIndex),segment=segmentsFromBase({baseUrl:baseUrl,timescale:timescale,timeline:timeline,periodStart:periodStart,presentationTime:presentationTime,number:number,duration:duration,sourceDuration:sourceDuration,indexRange:indexRange,type:type})[0];initSegment&&(segment.map=initSegment),segments.push(segment),startIndex+="bigint"==typeof startIndex?window.BigInt(size):size,presentationTime+=duration/timescale,number++}return playlist.segments=segments,playlist},SUPPORTED_MEDIA_TYPES=["AUDIO","SUBTITLES"],getUniqueTimelineStarts=timelineStarts=>{return(lists=timelineStarts,keyFunction=_ref11=>{let{timeline:timeline}=_ref11;return timeline},values(lists.reduce(((acc,list)=>(list.forEach((el=>{acc[keyFunction(el)]=el})),acc)),{}))).sort(((a,b)=>a.timeline>b.timeline?1:-1));var lists,keyFunction},getMediaGroupPlaylists=manifest=>{let mediaGroupPlaylists=[];var master,callback;return master=manifest,callback=(properties,type,group,label)=>{mediaGroupPlaylists=mediaGroupPlaylists.concat(properties.playlists||[])},SUPPORTED_MEDIA_TYPES.forEach((function(mediaType){for(var groupKey in master.mediaGroups[mediaType])for(var labelKey in master.mediaGroups[mediaType][groupKey]){var mediaProperties=master.mediaGroups[mediaType][groupKey][labelKey];callback(mediaProperties,mediaType,groupKey,labelKey)}})),mediaGroupPlaylists},updateMediaSequenceForPlaylist=_ref12=>{let{playlist:playlist,mediaSequence:mediaSequence}=_ref12;playlist.mediaSequence=mediaSequence,playlist.segments.forEach(((segment,index)=>{segment.number=playlist.mediaSequence+index}))},positionManifestOnTimeline=_ref15=>{let{oldManifest:oldManifest,newManifest:newManifest}=_ref15;const oldPlaylists=oldManifest.playlists.concat(getMediaGroupPlaylists(oldManifest)),newPlaylists=newManifest.playlists.concat(getMediaGroupPlaylists(newManifest));return newManifest.timelineStarts=getUniqueTimelineStarts([oldManifest.timelineStarts,newManifest.timelineStarts]),(_ref13=>{let{oldPlaylists:oldPlaylists,newPlaylists:newPlaylists,timelineStarts:timelineStarts}=_ref13;newPlaylists.forEach((playlist=>{playlist.discontinuitySequence=timelineStarts.findIndex((function(_ref14){let{timeline:timeline}=_ref14;return timeline===playlist.timeline}));const oldPlaylist=((playlists,name)=>{for(let i=0;i<playlists.length;i++)if(playlists[i].attributes.NAME===name)return playlists[i];return null})(oldPlaylists,playlist.attributes.NAME);if(!oldPlaylist)return;if(playlist.sidx)return;const firstNewSegment=playlist.segments[0],oldMatchingSegmentIndex=oldPlaylist.segments.findIndex((function(oldSegment){return Math.abs(oldSegment.presentationTime-firstNewSegment.presentationTime)<.016666666666666666}));if(-1===oldMatchingSegmentIndex)return updateMediaSequenceForPlaylist({playlist:playlist,mediaSequence:oldPlaylist.mediaSequence+oldPlaylist.segments.length}),playlist.segments[0].discontinuity=!0,playlist.discontinuityStarts.unshift(0),void((!oldPlaylist.segments.length&&playlist.timeline>oldPlaylist.timeline||oldPlaylist.segments.length&&playlist.timeline>oldPlaylist.segments[oldPlaylist.segments.length-1].timeline)&&playlist.discontinuitySequence--);oldPlaylist.segments[oldMatchingSegmentIndex].discontinuity&&!firstNewSegment.discontinuity&&(firstNewSegment.discontinuity=!0,playlist.discontinuityStarts.unshift(0),playlist.discontinuitySequence--),updateMediaSequenceForPlaylist({playlist:playlist,mediaSequence:oldPlaylist.segments[oldMatchingSegmentIndex].number})}))})({oldPlaylists:oldPlaylists,newPlaylists:newPlaylists,timelineStarts:newManifest.timelineStarts}),newManifest},generateSidxKey=sidx=>sidx&&sidx.uri+"-"+(byterange=>{let endRange;return endRange="bigint"==typeof byterange.offset||"bigint"==typeof byterange.length?window.BigInt(byterange.offset)+window.BigInt(byterange.length)-window.BigInt(1):byterange.offset+byterange.length-1,"".concat(byterange.offset,"-").concat(endRange)})(sidx.byterange),mergeDiscontiguousPlaylists=playlists=>{const playlistsByBaseUrl=playlists.reduce((function(acc,cur){return acc[cur.attributes.baseUrl]||(acc[cur.attributes.baseUrl]=[]),acc[cur.attributes.baseUrl].push(cur),acc}),{});let allPlaylists=[];return Object.values(playlistsByBaseUrl).forEach((playlistGroup=>{const mergedPlaylists=values(playlistGroup.reduce(((acc,playlist)=>{const name=playlist.attributes.id+(playlist.attributes.lang||"");return acc[name]?(playlist.segments&&(playlist.segments[0]&&(playlist.segments[0].discontinuity=!0),acc[name].segments.push(...playlist.segments)),playlist.attributes.contentProtection&&(acc[name].attributes.contentProtection=playlist.attributes.contentProtection)):(acc[name]=playlist,acc[name].attributes.timelineStarts=[]),acc[name].attributes.timelineStarts.push({start:playlist.attributes.periodStart,timeline:playlist.attributes.periodStart}),acc}),{}));allPlaylists=allPlaylists.concat(mergedPlaylists)})),allPlaylists.map((playlist=>{var l,key;return playlist.discontinuityStarts=(l=playlist.segments||[],key="discontinuity",l.reduce(((a,e,i)=>(e[key]&&a.push(i),a)),[])),playlist}))},addSidxSegmentsToPlaylist=(playlist,sidxMapping)=>{const sidxKey=generateSidxKey(playlist.sidx),sidxMatch=sidxKey&&sidxMapping[sidxKey]&&sidxMapping[sidxKey].sidx;return sidxMatch&&addSidxSegmentsToPlaylist$1(playlist,sidxMatch,playlist.sidx.resolvedUri),playlist},addSidxSegmentsToPlaylists=function(playlists){let sidxMapping=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};if(!Object.keys(sidxMapping).length)return playlists;for(const i in playlists)playlists[i]=addSidxSegmentsToPlaylist(playlists[i],sidxMapping);return playlists},formatAudioPlaylist=(_ref16,isAudioOnly)=>{let{attributes:attributes,segments:segments,sidx:sidx,mediaSequence:mediaSequence,discontinuitySequence:discontinuitySequence,discontinuityStarts:discontinuityStarts}=_ref16;const playlist={attributes:{NAME:attributes.id,BANDWIDTH:attributes.bandwidth,CODECS:attributes.codecs,"PROGRAM-ID":1},uri:"",endList:"static"===attributes.type,timeline:attributes.periodStart,resolvedUri:attributes.baseUrl||"",targetDuration:attributes.duration,discontinuitySequence:discontinuitySequence,discontinuityStarts:discontinuityStarts,timelineStarts:attributes.timelineStarts,mediaSequence:mediaSequence,segments:segments};return attributes.contentProtection&&(playlist.contentProtection=attributes.contentProtection),attributes.serviceLocation&&(playlist.attributes.serviceLocation=attributes.serviceLocation),sidx&&(playlist.sidx=sidx),isAudioOnly&&(playlist.attributes.AUDIO="audio",playlist.attributes.SUBTITLES="subs"),playlist},formatVttPlaylist=_ref17=>{let{attributes:attributes,segments:segments,mediaSequence:mediaSequence,discontinuityStarts:discontinuityStarts,discontinuitySequence:discontinuitySequence}=_ref17;void 0===segments&&(segments=[{uri:attributes.baseUrl,timeline:attributes.periodStart,resolvedUri:attributes.baseUrl||"",duration:attributes.sourceDuration,number:0}],attributes.duration=attributes.sourceDuration);const m3u8Attributes={NAME:attributes.id,BANDWIDTH:attributes.bandwidth,"PROGRAM-ID":1};attributes.codecs&&(m3u8Attributes.CODECS=attributes.codecs);const vttPlaylist={attributes:m3u8Attributes,uri:"",endList:"static"===attributes.type,timeline:attributes.periodStart,resolvedUri:attributes.baseUrl||"",targetDuration:attributes.duration,timelineStarts:attributes.timelineStarts,discontinuityStarts:discontinuityStarts,discontinuitySequence:discontinuitySequence,mediaSequence:mediaSequence,segments:segments};return attributes.serviceLocation&&(vttPlaylist.attributes.serviceLocation=attributes.serviceLocation),vttPlaylist},formatVideoPlaylist=_ref18=>{let{attributes:attributes,segments:segments,sidx:sidx,discontinuityStarts:discontinuityStarts}=_ref18;const playlist={attributes:{NAME:attributes.id,AUDIO:"audio",SUBTITLES:"subs",RESOLUTION:{width:attributes.width,height:attributes.height},CODECS:attributes.codecs,BANDWIDTH:attributes.bandwidth,"PROGRAM-ID":1},uri:"",endList:"static"===attributes.type,timeline:attributes.periodStart,resolvedUri:attributes.baseUrl||"",targetDuration:attributes.duration,discontinuityStarts:discontinuityStarts,timelineStarts:attributes.timelineStarts,segments:segments};return attributes.frameRate&&(playlist.attributes["FRAME-RATE"]=attributes.frameRate),attributes.contentProtection&&(playlist.contentProtection=attributes.contentProtection),attributes.serviceLocation&&(playlist.attributes.serviceLocation=attributes.serviceLocation),sidx&&(playlist.sidx=sidx),playlist},videoOnly=_ref19=>{let{attributes:attributes}=_ref19;return"video/mp4"===attributes.mimeType||"video/webm"===attributes.mimeType||"video"===attributes.contentType},audioOnly=_ref20=>{let{attributes:attributes}=_ref20;return"audio/mp4"===attributes.mimeType||"audio/webm"===attributes.mimeType||"audio"===attributes.contentType},vttOnly=_ref21=>{let{attributes:attributes}=_ref21;return"text/vtt"===attributes.mimeType||"text"===attributes.contentType},flattenMediaGroupPlaylists=mediaGroupObject=>mediaGroupObject?Object.keys(mediaGroupObject).reduce(((acc,label)=>{const labelContents=mediaGroupObject[label];return acc.concat(labelContents.playlists)}),[]):[],toM3u8=_ref23=>{let{dashPlaylists:dashPlaylists,locations:locations,contentSteering:contentSteering,sidxMapping:sidxMapping={},previousManifest:previousManifest,eventStream:eventStream}=_ref23;if(!dashPlaylists.length)return{};const{sourceDuration:duration,type:type,suggestedPresentationDelay:suggestedPresentationDelay,minimumUpdatePeriod:minimumUpdatePeriod}=dashPlaylists[0].attributes,videoPlaylists=mergeDiscontiguousPlaylists(dashPlaylists.filter(videoOnly)).map(formatVideoPlaylist),audioPlaylists=mergeDiscontiguousPlaylists(dashPlaylists.filter(audioOnly)),vttPlaylists=mergeDiscontiguousPlaylists(dashPlaylists.filter(vttOnly)),captions=dashPlaylists.map((playlist=>playlist.attributes.captionServices)).filter(Boolean),manifest={allowCache:!0,discontinuityStarts:[],segments:[],endList:!0,mediaGroups:{AUDIO:{},VIDEO:{},"CLOSED-CAPTIONS":{},SUBTITLES:{}},uri:"",duration:duration,playlists:addSidxSegmentsToPlaylists(videoPlaylists,sidxMapping)};minimumUpdatePeriod>=0&&(manifest.minimumUpdatePeriod=1e3*minimumUpdatePeriod),locations&&(manifest.locations=locations),contentSteering&&(manifest.contentSteering=contentSteering),"dynamic"===type&&(manifest.suggestedPresentationDelay=suggestedPresentationDelay),eventStream&&eventStream.length>0&&(manifest.eventStream=eventStream);const isAudioOnly=0===manifest.playlists.length,organizedAudioGroup=audioPlaylists.length?function(playlists){let mainPlaylist,sidxMapping=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},isAudioOnly=arguments.length>2&&void 0!==arguments[2]&&arguments[2];const formattedPlaylists=playlists.reduce(((a,playlist)=>{const role=playlist.attributes.role&&playlist.attributes.role.value||"",language=playlist.attributes.lang||"";let label=playlist.attributes.label||"main";if(language&&!playlist.attributes.label){const roleLabel=role?" (".concat(role,")"):"";label="".concat(playlist.attributes.lang).concat(roleLabel)}a[label]||(a[label]={language:language,autoselect:!0,default:"main"===role,playlists:[],uri:""});const formatted=addSidxSegmentsToPlaylist(formatAudioPlaylist(playlist,isAudioOnly),sidxMapping);return a[label].playlists.push(formatted),void 0===mainPlaylist&&"main"===role&&(mainPlaylist=playlist,mainPlaylist.default=!0),a}),{});mainPlaylist||(formattedPlaylists[Object.keys(formattedPlaylists)[0]].default=!0);return formattedPlaylists}(audioPlaylists,sidxMapping,isAudioOnly):null,organizedVttGroup=vttPlaylists.length?function(playlists){let sidxMapping=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};return playlists.reduce(((a,playlist)=>{const label=playlist.attributes.label||playlist.attributes.lang||"text";return a[label]||(a[label]={language:label,default:!1,autoselect:!1,playlists:[],uri:""}),a[label].playlists.push(addSidxSegmentsToPlaylist(formatVttPlaylist(playlist),sidxMapping)),a}),{})}(vttPlaylists,sidxMapping):null,formattedPlaylists=videoPlaylists.concat(flattenMediaGroupPlaylists(organizedAudioGroup),flattenMediaGroupPlaylists(organizedVttGroup)),playlistTimelineStarts=formattedPlaylists.map((_ref24=>{let{timelineStarts:timelineStarts}=_ref24;return timelineStarts}));var playlists,timelineStarts;return manifest.timelineStarts=getUniqueTimelineStarts(playlistTimelineStarts),playlists=formattedPlaylists,timelineStarts=manifest.timelineStarts,playlists.forEach((playlist=>{playlist.mediaSequence=0,playlist.discontinuitySequence=timelineStarts.findIndex((function(_ref22){let{timeline:timeline}=_ref22;return timeline===playlist.timeline})),playlist.segments&&playlist.segments.forEach(((segment,index)=>{segment.number=index}))})),organizedAudioGroup&&(manifest.mediaGroups.AUDIO.audio=organizedAudioGroup),organizedVttGroup&&(manifest.mediaGroups.SUBTITLES.subs=organizedVttGroup),captions.length&&(manifest.mediaGroups["CLOSED-CAPTIONS"].cc=captions.reduce(((svcObj,svc)=>svc?(svc.forEach((service=>{const{channel:channel,language:language}=service;svcObj[language]={autoselect:!1,default:!1,instreamId:channel,language:language},service.hasOwnProperty("aspectRatio")&&(svcObj[language].aspectRatio=service.aspectRatio),service.hasOwnProperty("easyReader")&&(svcObj[language].easyReader=service.easyReader),service.hasOwnProperty("3D")&&(svcObj[language]["3D"]=service["3D"])})),svcObj):svcObj),{})),previousManifest?positionManifestOnTimeline({oldManifest:previousManifest,newManifest:manifest}):manifest},getLiveRValue=(attributes,time,duration)=>{const{NOW:NOW,clientOffset:clientOffset,availabilityStartTime:availabilityStartTime,timescale:timescale=1,periodStart:periodStart=0,minimumUpdatePeriod:minimumUpdatePeriod=0}=attributes,periodDuration=(NOW+clientOffset)/1e3+minimumUpdatePeriod-(availabilityStartTime+periodStart);return Math.ceil((periodDuration*timescale-time)/duration)},parseByTimeline=(attributes,segmentTimeline)=>{const{type:type,minimumUpdatePeriod:minimumUpdatePeriod=0,media:media="",sourceDuration:sourceDuration,timescale:timescale=1,startNumber:startNumber=1,periodStart:timeline}=attributes,segments=[];let time=-1;for(let sIndex=0;sIndex<segmentTimeline.length;sIndex++){const S=segmentTimeline[sIndex],duration=S.d,repeat=S.r||0,segmentTime=S.t||0;let count;if(time<0&&(time=segmentTime),segmentTime&&segmentTime>time&&(time=segmentTime),repeat<0){const nextS=sIndex+1;count=nextS===segmentTimeline.length?"dynamic"===type&&minimumUpdatePeriod>0&&media.indexOf("$Number$")>0?getLiveRValue(attributes,time,duration):(sourceDuration*timescale-time)/duration:(segmentTimeline[nextS].t-time)/duration}else count=repeat+1;const end=startNumber+segments.length+count;let number=startNumber+segments.length;for(;number<end;)segments.push({number:number,duration:duration/timescale,time:time,timeline:timeline}),time+=duration,number++}return segments},identifierPattern=/\$([A-z]*)(?:(%0)([0-9]+)d)?\$/g,constructTemplateUrl=(url,values)=>url.replace(identifierPattern,(values=>(match,identifier,format,width)=>{if("$$"===match)return"$";if(void 0===values[identifier])return match;const value=""+values[identifier];return"RepresentationID"===identifier?value:(width=format?parseInt(width,10):1,value.length>=width?value:"".concat(new Array(width-value.length+1).join("0")).concat(value))})(values)),segmentsFromTemplate=(attributes,segmentTimeline)=>{const templateValues={RepresentationID:attributes.id,Bandwidth:attributes.bandwidth||0},{initialization:initialization={sourceURL:"",range:""}}=attributes,mapSegment=urlTypeToSegment({baseUrl:attributes.baseUrl,source:constructTemplateUrl(initialization.sourceURL,templateValues),range:initialization.range}),segments=((attributes,segmentTimeline)=>attributes.duration||segmentTimeline?attributes.duration?parseByDuration(attributes):parseByTimeline(attributes,segmentTimeline):[{number:attributes.startNumber||1,duration:attributes.sourceDuration,time:0,timeline:attributes.periodStart}])(attributes,segmentTimeline);return segments.map((segment=>{templateValues.Number=segment.number,templateValues.Time=segment.time;const uri=constructTemplateUrl(attributes.media||"",templateValues),timescale=attributes.timescale||1,presentationTimeOffset=attributes.presentationTimeOffset||0,presentationTime=attributes.periodStart+(segment.time-presentationTimeOffset)/timescale;return{uri:uri,timeline:segment.timeline,duration:segment.duration,resolvedUri:resolveUrl$1(attributes.baseUrl||"",uri),map:mapSegment,number:segment.number,presentationTime:presentationTime}}))},segmentsFromList=(attributes,segmentTimeline)=>{const{duration:duration,segmentUrls:segmentUrls=[],periodStart:periodStart}=attributes;if(!duration&&!segmentTimeline||duration&&segmentTimeline)throw new Error(errors_SEGMENT_TIME_UNSPECIFIED);const segmentUrlMap=segmentUrls.map((segmentUrlObject=>((attributes,segmentUrl)=>{const{baseUrl:baseUrl,initialization:initialization={}}=attributes,initSegment=urlTypeToSegment({baseUrl:baseUrl,source:initialization.sourceURL,range:initialization.range}),segment=urlTypeToSegment({baseUrl:baseUrl,source:segmentUrl.media,range:segmentUrl.mediaRange});return segment.map=initSegment,segment})(attributes,segmentUrlObject)));let segmentTimeInfo;duration&&(segmentTimeInfo=parseByDuration(attributes)),segmentTimeline&&(segmentTimeInfo=parseByTimeline(attributes,segmentTimeline));return segmentTimeInfo.map(((segmentTime,index)=>{if(segmentUrlMap[index]){const segment=segmentUrlMap[index],timescale=attributes.timescale||1,presentationTimeOffset=attributes.presentationTimeOffset||0;return segment.timeline=segmentTime.timeline,segment.duration=segmentTime.duration,segment.number=segmentTime.number,segment.presentationTime=periodStart+(segmentTime.time-presentationTimeOffset)/timescale,segment}})).filter((segment=>segment))},generateSegments=_ref25=>{let segmentAttributes,segmentsFn,{attributes:attributes,segmentInfo:segmentInfo}=_ref25;segmentInfo.template?(segmentsFn=segmentsFromTemplate,segmentAttributes=merge$1(attributes,segmentInfo.template)):segmentInfo.base?(segmentsFn=segmentsFromBase,segmentAttributes=merge$1(attributes,segmentInfo.base)):segmentInfo.list&&(segmentsFn=segmentsFromList,segmentAttributes=merge$1(attributes,segmentInfo.list));const segmentsInfo={attributes:attributes};if(!segmentsFn)return segmentsInfo;const segments=segmentsFn(segmentAttributes,segmentInfo.segmentTimeline);if(segmentAttributes.duration){const{duration:duration,timescale:timescale=1}=segmentAttributes;segmentAttributes.duration=duration/timescale}else segments.length?segmentAttributes.duration=segments.reduce(((max,segment)=>Math.max(max,Math.ceil(segment.duration))),0):segmentAttributes.duration=0;return segmentsInfo.attributes=segmentAttributes,segmentsInfo.segments=segments,segmentInfo.base&&segmentAttributes.indexRange&&(segmentsInfo.sidx=segments[0],segmentsInfo.segments=[]),segmentsInfo},toPlaylists=representations=>representations.map(generateSegments),findChildren=(element,name)=>from(element.childNodes).filter((_ref26=>{let{tagName:tagName}=_ref26;return tagName===name})),getContent=element=>element.textContent.trim(),parseDuration=str=>{const match=/P(?:(\d*)Y)?(?:(\d*)M)?(?:(\d*)D)?(?:T(?:(\d*)H)?(?:(\d*)M)?(?:([\d.]*)S)?)?/.exec(str);if(!match)return 0;const[year,month,day,hour,minute,second]=match.slice(1);return 31536e3*parseFloat(year||0)+2592e3*parseFloat(month||0)+86400*parseFloat(day||0)+3600*parseFloat(hour||0)+60*parseFloat(minute||0)+parseFloat(second||0)},parsers={mediaPresentationDuration:value=>parseDuration(value),availabilityStartTime(value){return/^\d+-\d+-\d+T\d+:\d+:\d+(\.\d+)?$/.test(str=value)&&(str+="Z"),Date.parse(str)/1e3;var str},minimumUpdatePeriod:value=>parseDuration(value),suggestedPresentationDelay:value=>parseDuration(value),type:value=>value,timeShiftBufferDepth:value=>parseDuration(value),start:value=>parseDuration(value),width:value=>parseInt(value,10),height:value=>parseInt(value,10),bandwidth:value=>parseInt(value,10),frameRate:value=>(value=>parseFloat(value.split("/").reduce(((prev,current)=>prev/current))))(value),startNumber:value=>parseInt(value,10),timescale:value=>parseInt(value,10),presentationTimeOffset:value=>parseInt(value,10),duration(value){const parsedValue=parseInt(value,10);return isNaN(parsedValue)?parseDuration(value):parsedValue},d:value=>parseInt(value,10),t:value=>parseInt(value,10),r:value=>parseInt(value,10),presentationTime:value=>parseInt(value,10),DEFAULT:value=>value},parseAttributes=el=>el&&el.attributes?from(el.attributes).reduce(((a,e)=>{const parseFn=parsers[e.name]||parsers.DEFAULT;return a[e.name]=parseFn(e.value),a}),{}):{},keySystemsMap={"urn:uuid:1077efec-c0b2-4d02-ace3-3c1e52e2fb4b":"org.w3.clearkey","urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed":"com.widevine.alpha","urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95":"com.microsoft.playready","urn:uuid:f239e769-efa3-4850-9c16-a903c6932efb":"com.adobe.primetime","urn:mpeg:dash:mp4protection:2011":"mp4protection"},buildBaseUrls=(references,baseUrlElements)=>baseUrlElements.length?flatten(references.map((function(reference){return baseUrlElements.map((function(baseUrlElement){const initialBaseUrl=getContent(baseUrlElement),resolvedBaseUrl=resolveUrl$1(reference.baseUrl,initialBaseUrl),finalBaseUrl=merge$1(parseAttributes(baseUrlElement),{baseUrl:resolvedBaseUrl});return resolvedBaseUrl!==initialBaseUrl&&!finalBaseUrl.serviceLocation&&reference.serviceLocation&&(finalBaseUrl.serviceLocation=reference.serviceLocation),finalBaseUrl}))}))):references,getSegmentInformation=adaptationSet=>{const segmentTemplate=findChildren(adaptationSet,"SegmentTemplate")[0],segmentList=findChildren(adaptationSet,"SegmentList")[0],segmentUrls=segmentList&&findChildren(segmentList,"SegmentURL").map((s=>merge$1({tag:"SegmentURL"},parseAttributes(s)))),segmentBase=findChildren(adaptationSet,"SegmentBase")[0],segmentTimelineParentNode=segmentList||segmentTemplate,segmentTimeline=segmentTimelineParentNode&&findChildren(segmentTimelineParentNode,"SegmentTimeline")[0],segmentInitializationParentNode=segmentList||segmentBase||segmentTemplate,segmentInitialization=segmentInitializationParentNode&&findChildren(segmentInitializationParentNode,"Initialization")[0],template=segmentTemplate&&parseAttributes(segmentTemplate);template&&segmentInitialization?template.initialization=segmentInitialization&&parseAttributes(segmentInitialization):template&&template.initialization&&(template.initialization={sourceURL:template.initialization});const segmentInfo={template:template,segmentTimeline:segmentTimeline&&findChildren(segmentTimeline,"S").map((s=>parseAttributes(s))),list:segmentList&&merge$1(parseAttributes(segmentList),{segmentUrls:segmentUrls,initialization:parseAttributes(segmentInitialization)}),base:segmentBase&&merge$1(parseAttributes(segmentBase),{initialization:parseAttributes(segmentInitialization)})};return Object.keys(segmentInfo).forEach((key=>{segmentInfo[key]||delete segmentInfo[key]})),segmentInfo},toEventStream=period=>flatten(findChildren(period.node,"EventStream").map((eventStream=>{const eventStreamAttributes=parseAttributes(eventStream),schemeIdUri=eventStreamAttributes.schemeIdUri;return findChildren(eventStream,"Event").map((event=>{const eventAttributes=parseAttributes(event),presentationTime=eventAttributes.presentationTime||0,timescale=eventStreamAttributes.timescale||1,duration=eventAttributes.duration||0,start=presentationTime/timescale+period.attributes.start;return{schemeIdUri:schemeIdUri,value:eventStreamAttributes.value,id:eventAttributes.id,start:start,end:start+duration/timescale,messageData:getContent(event)||eventAttributes.messageData,contentEncoding:eventStreamAttributes.contentEncoding,presentationTimeOffset:eventStreamAttributes.presentationTimeOffset||0}}))}))),toRepresentations=(periodAttributes,periodBaseUrls,periodSegmentInfo)=>adaptationSet=>{const adaptationSetAttributes=parseAttributes(adaptationSet),adaptationSetBaseUrls=buildBaseUrls(periodBaseUrls,findChildren(adaptationSet,"BaseURL")),role=findChildren(adaptationSet,"Role")[0],roleAttributes={role:parseAttributes(role)};let attrs=merge$1(periodAttributes,adaptationSetAttributes,roleAttributes);const accessibility=findChildren(adaptationSet,"Accessibility")[0],captionServices=(service=>{if("urn:scte:dash:cc:cea-608:2015"===service.schemeIdUri)return("string"!=typeof service.value?[]:service.value.split(";")).map((value=>{let channel,language;return language=value,/^CC\d=/.test(value)?[channel,language]=value.split("="):/^CC\d$/.test(value)&&(channel=value),{channel:channel,language:language}}));if("urn:scte:dash:cc:cea-708:2015"===service.schemeIdUri)return("string"!=typeof service.value?[]:service.value.split(";")).map((value=>{const flags={channel:void 0,language:void 0,aspectRatio:1,easyReader:0,"3D":0};if(/=/.test(value)){const[channel,opts=""]=value.split("=");flags.channel=channel,flags.language=value,opts.split(",").forEach((opt=>{const[name,val]=opt.split(":");"lang"===name?flags.language=val:"er"===name?flags.easyReader=Number(val):"war"===name?flags.aspectRatio=Number(val):"3D"===name&&(flags["3D"]=Number(val))}))}else flags.language=value;return flags.channel&&(flags.channel="SERVICE"+flags.channel),flags}))})(parseAttributes(accessibility));captionServices&&(attrs=merge$1(attrs,{captionServices:captionServices}));const label=findChildren(adaptationSet,"Label")[0];if(label&&label.childNodes.length){const labelVal=label.childNodes[0].nodeValue.trim();attrs=merge$1(attrs,{label:labelVal})}const contentProtection=findChildren(adaptationSet,"ContentProtection").reduce(((acc,node)=>{const attributes=parseAttributes(node);attributes.schemeIdUri&&(attributes.schemeIdUri=attributes.schemeIdUri.toLowerCase());const keySystem=keySystemsMap[attributes.schemeIdUri];if(keySystem){acc[keySystem]={attributes:attributes};const psshNode=findChildren(node,"cenc:pssh")[0];if(psshNode){const pssh=getContent(psshNode);acc[keySystem].pssh=pssh&&decodeB64ToUint8Array(pssh)}}return acc}),{});Object.keys(contentProtection).length&&(attrs=merge$1(attrs,{contentProtection:contentProtection}));const segmentInfo=getSegmentInformation(adaptationSet),representations=findChildren(adaptationSet,"Representation"),adaptationSetSegmentInfo=merge$1(periodSegmentInfo,segmentInfo);return flatten(representations.map(((adaptationSetAttributes,adaptationSetBaseUrls,adaptationSetSegmentInfo)=>representation=>{const repBaseUrlElements=findChildren(representation,"BaseURL"),repBaseUrls=buildBaseUrls(adaptationSetBaseUrls,repBaseUrlElements),attributes=merge$1(adaptationSetAttributes,parseAttributes(representation)),representationSegmentInfo=getSegmentInformation(representation);return repBaseUrls.map((baseUrl=>({segmentInfo:merge$1(adaptationSetSegmentInfo,representationSegmentInfo),attributes:merge$1(attributes,baseUrl)})))})(attrs,adaptationSetBaseUrls,adaptationSetSegmentInfo)))},toAdaptationSets=(mpdAttributes,mpdBaseUrls)=>(period,index)=>{const periodBaseUrls=buildBaseUrls(mpdBaseUrls,findChildren(period.node,"BaseURL")),periodAttributes=merge$1(mpdAttributes,{periodStart:period.attributes.start});"number"==typeof period.attributes.duration&&(periodAttributes.periodDuration=period.attributes.duration);const adaptationSets=findChildren(period.node,"AdaptationSet"),periodSegmentInfo=getSegmentInformation(period.node);return flatten(adaptationSets.map(toRepresentations(periodAttributes,periodBaseUrls,periodSegmentInfo)))},generateContentSteeringInformation=(contentSteeringNodes,eventHandler)=>{if(contentSteeringNodes.length>1&&eventHandler({type:"warn",message:"The MPD manifest should contain no more than one ContentSteering tag"}),!contentSteeringNodes.length)return null;const infoFromContentSteeringTag=merge$1({serverURL:getContent(contentSteeringNodes[0])},parseAttributes(contentSteeringNodes[0]));return infoFromContentSteeringTag.queryBeforeStart="true"===infoFromContentSteeringTag.queryBeforeStart,infoFromContentSteeringTag},getPeriodStart=_ref27=>{let{attributes:attributes,priorPeriodAttributes:priorPeriodAttributes,mpdType:mpdType}=_ref27;return"number"==typeof attributes.start?attributes.start:priorPeriodAttributes&&"number"==typeof priorPeriodAttributes.start&&"number"==typeof priorPeriodAttributes.duration?priorPeriodAttributes.start+priorPeriodAttributes.duration:priorPeriodAttributes||"static"!==mpdType?null:0},inheritAttributes=function(mpd){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};const{manifestUri:manifestUri="",NOW:NOW=Date.now(),clientOffset:clientOffset=0,eventHandler:eventHandler=function(){}}=options,periodNodes=findChildren(mpd,"Period");if(!periodNodes.length)throw new Error(errors_INVALID_NUMBER_OF_PERIOD);const locations=findChildren(mpd,"Location"),mpdAttributes=parseAttributes(mpd),mpdBaseUrls=buildBaseUrls([{baseUrl:manifestUri}],findChildren(mpd,"BaseURL")),contentSteeringNodes=findChildren(mpd,"ContentSteering");mpdAttributes.type=mpdAttributes.type||"static",mpdAttributes.sourceDuration=mpdAttributes.mediaPresentationDuration||0,mpdAttributes.NOW=NOW,mpdAttributes.clientOffset=clientOffset,locations.length&&(mpdAttributes.locations=locations.map(getContent));const periods=[];return periodNodes.forEach(((node,index)=>{const attributes=parseAttributes(node),priorPeriod=periods[index-1];attributes.start=getPeriodStart({attributes:attributes,priorPeriodAttributes:priorPeriod?priorPeriod.attributes:null,mpdType:mpdAttributes.type}),periods.push({node:node,attributes:attributes})})),{locations:mpdAttributes.locations,contentSteeringInfo:generateContentSteeringInformation(contentSteeringNodes,eventHandler),representationInfo:flatten(periods.map(toAdaptationSets(mpdAttributes,mpdBaseUrls))),eventStream:flatten(periods.map(toEventStream))}},stringToMpdXml=manifestString=>{if(""===manifestString)throw new Error(errors_DASH_EMPTY_MANIFEST);const parser=new DOMParser;let xml,mpd;try{xml=parser.parseFromString(manifestString,"application/xml"),mpd=xml&&"MPD"===xml.documentElement.tagName?xml.documentElement:null}catch(e){}if(!mpd||mpd&&mpd.getElementsByTagName("parsererror").length>0)throw new Error(errors_DASH_INVALID_XML);return mpd},parseUTCTiming=manifestString=>(mpd=>{const UTCTimingNode=findChildren(mpd,"UTCTiming")[0];if(!UTCTimingNode)return null;const attributes=parseAttributes(UTCTimingNode);switch(attributes.schemeIdUri){case"urn:mpeg:dash:utc:http-head:2014":case"urn:mpeg:dash:utc:http-head:2012":attributes.method="HEAD";break;case"urn:mpeg:dash:utc:http-xsdate:2014":case"urn:mpeg:dash:utc:http-iso:2014":case"urn:mpeg:dash:utc:http-xsdate:2012":case"urn:mpeg:dash:utc:http-iso:2012":attributes.method="GET";break;case"urn:mpeg:dash:utc:direct:2014":case"urn:mpeg:dash:utc:direct:2012":attributes.method="DIRECT",attributes.value=Date.parse(attributes.value);break;default:throw new Error(errors_UNSUPPORTED_UTC_TIMING_SCHEME)}return attributes})(stringToMpdXml(manifestString));var MAX_UINT32=Math.pow(2,32),getUint64=function(uint8){var value,dv=new DataView(uint8.buffer,uint8.byteOffset,uint8.byteLength);return dv.getBigUint64?(value=dv.getBigUint64(0))<Number.MAX_SAFE_INTEGER?Number(value):value:dv.getUint32(0)*MAX_UINT32+dv.getUint32(4)},parseSidx_1=function(data){var view=new DataView(data.buffer,data.byteOffset,data.byteLength),result={version:data[0],flags:new Uint8Array(data.subarray(1,4)),references:[],referenceId:view.getUint32(4),timescale:view.getUint32(8)},i=12;0===result.version?(result.earliestPresentationTime=view.getUint32(i),result.firstOffset=view.getUint32(i+4),i+=8):(result.earliestPresentationTime=getUint64(data.subarray(i)),result.firstOffset=getUint64(data.subarray(i+8)),i+=16),i+=2;var referenceCount=view.getUint16(i);for(i+=2;referenceCount>0;i+=12,referenceCount--)result.references.push({referenceType:(128&data[i])>>>7,referencedSize:2147483647&view.getUint32(i),subsegmentDuration:view.getUint32(i+4),startsWithSap:!!(128&data[i+8]),sapType:(112&data[i+8])>>>4,sapDeltaTime:268435455&view.getUint32(i+8)});return result},ID3=toUint8([73,68,51]),getId3Offset=function getId3Offset(bytes,offset){return void 0===offset&&(offset=0),(bytes=toUint8(bytes)).length-offset<10||!bytesMatch(bytes,ID3,{offset:offset})?offset:(offset+=function(bytes,offset){void 0===offset&&(offset=0);var flags=(bytes=toUint8(bytes))[offset+5],returnSize=bytes[offset+6]<<21|bytes[offset+7]<<14|bytes[offset+8]<<7|bytes[offset+9];return(16&flags)>>4?returnSize+20:returnSize+10}(bytes,offset),getId3Offset(bytes,offset))},normalizePath$1=function(path){return"string"==typeof path?stringToBytes(path):path},findBox=function findBox(bytes,paths,complete){void 0===complete&&(complete=!1),paths=function(paths){return Array.isArray(paths)?paths.map((function(p){return normalizePath$1(p)})):[normalizePath$1(paths)]}(paths),bytes=toUint8(bytes);var results=[];if(!paths.length)return results;for(var i=0;i<bytes.length;){var size=(bytes[i]<<24|bytes[i+1]<<16|bytes[i+2]<<8|bytes[i+3])>>>0,type=bytes.subarray(i+4,i+8);if(0===size)break;var end=i+size;if(end>bytes.length){if(complete)break;end=bytes.length}var data=bytes.subarray(i+8,end);bytesMatch(type,paths[0])&&(1===paths.length?results.push(data):results.push.apply(results,findBox(data,paths.slice(1),complete))),i=end}return results},EBML_TAGS={EBML:toUint8([26,69,223,163]),DocType:toUint8([66,130]),Segment:toUint8([24,83,128,103]),SegmentInfo:toUint8([21,73,169,102]),Tracks:toUint8([22,84,174,107]),Track:toUint8([174]),TrackNumber:toUint8([215]),DefaultDuration:toUint8([35,227,131]),TrackEntry:toUint8([174]),TrackType:toUint8([131]),FlagDefault:toUint8([136]),CodecID:toUint8([134]),CodecPrivate:toUint8([99,162]),VideoTrack:toUint8([224]),AudioTrack:toUint8([225]),Cluster:toUint8([31,67,182,117]),Timestamp:toUint8([231]),TimestampScale:toUint8([42,215,177]),BlockGroup:toUint8([160]),BlockDuration:toUint8([155]),Block:toUint8([161]),SimpleBlock:toUint8([163])},LENGTH_TABLE=[128,64,32,16,8,4,2,1],getvint=function(bytes,offset,removeLength,signed){void 0===removeLength&&(removeLength=!0),void 0===signed&&(signed=!1);var length=function(byte){for(var len=1,i=0;i<LENGTH_TABLE.length&&!(byte&LENGTH_TABLE[i]);i++)len++;return len}(bytes[offset]),valueBytes=bytes.subarray(offset,offset+length);return removeLength&&((valueBytes=Array.prototype.slice.call(bytes,offset,offset+length))[0]^=LENGTH_TABLE[length-1]),{length:length,value:bytesToNumber(valueBytes,{signed:signed}),bytes:valueBytes}},normalizePath=function normalizePath(path){return"string"==typeof path?path.match(/.{1,2}/g).map((function(p){return normalizePath(p)})):"number"==typeof path?numberToBytes(path):path},getInfinityDataSize=function getInfinityDataSize(id,bytes,offset){if(offset>=bytes.length)return bytes.length;var innerid=getvint(bytes,offset,!1);if(bytesMatch(id.bytes,innerid.bytes))return offset;var dataHeader=getvint(bytes,offset+innerid.length);return getInfinityDataSize(id,bytes,offset+dataHeader.length+dataHeader.value+innerid.length)},findEbml=function findEbml(bytes,paths){paths=function(paths){return Array.isArray(paths)?paths.map((function(p){return normalizePath(p)})):[normalizePath(paths)]}(paths),bytes=toUint8(bytes);var results=[];if(!paths.length)return results;for(var i=0;i<bytes.length;){var id=getvint(bytes,i,!1),dataHeader=getvint(bytes,i+id.length),dataStart=i+id.length+dataHeader.length;127===dataHeader.value&&(dataHeader.value=getInfinityDataSize(id,bytes,dataStart),dataHeader.value!==bytes.length&&(dataHeader.value-=dataStart));var dataEnd=dataStart+dataHeader.value>bytes.length?bytes.length:dataStart+dataHeader.value,data=bytes.subarray(dataStart,dataEnd);bytesMatch(paths[0],id.bytes)&&(1===paths.length?results.push(data):results=results.concat(findEbml(data,paths.slice(1)))),i+=id.length+dataHeader.length+data.length}return results},NAL_TYPE_ONE=toUint8([0,0,0,1]),NAL_TYPE_TWO=toUint8([0,0,1]),EMULATION_PREVENTION=toUint8([0,0,3]),discardEmulationPreventionBytes=function(bytes){for(var positions=[],i=1;i<bytes.length-2;)bytesMatch(bytes.subarray(i,i+3),EMULATION_PREVENTION)&&(positions.push(i+2),i++),i++;if(0===positions.length)return bytes;var newLength=bytes.length-positions.length,newData=new Uint8Array(newLength),sourceIndex=0;for(i=0;i<newLength;sourceIndex++,i++)sourceIndex===positions[0]&&(sourceIndex++,positions.shift()),newData[i]=bytes[sourceIndex];return newData},findNal=function(bytes,dataType,types,nalLimit){void 0===nalLimit&&(nalLimit=1/0),bytes=toUint8(bytes),types=[].concat(types);for(var nalStart,i=0,nalsFound=0;i<bytes.length&&(nalsFound<nalLimit||nalStart);){var nalOffset=void 0;if(bytesMatch(bytes.subarray(i),NAL_TYPE_ONE)?nalOffset=4:bytesMatch(bytes.subarray(i),NAL_TYPE_TWO)&&(nalOffset=3),nalOffset){if(nalsFound++,nalStart)return discardEmulationPreventionBytes(bytes.subarray(nalStart,i));var nalType=void 0;"h264"===dataType?nalType=31&bytes[i+nalOffset]:"h265"===dataType&&(nalType=bytes[i+nalOffset]>>1&63),-1!==types.indexOf(nalType)&&(nalStart=i+nalOffset),i+=nalOffset+("h264"===dataType?1:2)}else i++}return bytes.subarray(0,0)},CONSTANTS={webm:toUint8([119,101,98,109]),matroska:toUint8([109,97,116,114,111,115,107,97]),flac:toUint8([102,76,97,67]),ogg:toUint8([79,103,103,83]),ac3:toUint8([11,119]),riff:toUint8([82,73,70,70]),avi:toUint8([65,86,73]),wav:toUint8([87,65,86,69]),"3gp":toUint8([102,116,121,112,51,103]),mp4:toUint8([102,116,121,112]),fmp4:toUint8([115,116,121,112]),mov:toUint8([102,116,121,112,113,116]),moov:toUint8([109,111,111,118]),moof:toUint8([109,111,111,102])},_isLikely={aac:function(bytes){var offset=getId3Offset(bytes);return bytesMatch(bytes,[255,16],{offset:offset,mask:[255,22]})},mp3:function(bytes){var offset=getId3Offset(bytes);return bytesMatch(bytes,[255,2],{offset:offset,mask:[255,6]})},webm:function(bytes){var docType=findEbml(bytes,[EBML_TAGS.EBML,EBML_TAGS.DocType])[0];return bytesMatch(docType,CONSTANTS.webm)},mkv:function(bytes){var docType=findEbml(bytes,[EBML_TAGS.EBML,EBML_TAGS.DocType])[0];return bytesMatch(docType,CONSTANTS.matroska)},mp4:function(bytes){return!_isLikely["3gp"](bytes)&&!_isLikely.mov(bytes)&&(!(!bytesMatch(bytes,CONSTANTS.mp4,{offset:4})&&!bytesMatch(bytes,CONSTANTS.fmp4,{offset:4}))||(!(!bytesMatch(bytes,CONSTANTS.moof,{offset:4})&&!bytesMatch(bytes,CONSTANTS.moov,{offset:4}))||void 0))},mov:function(bytes){return bytesMatch(bytes,CONSTANTS.mov,{offset:4})},"3gp":function(bytes){return bytesMatch(bytes,CONSTANTS["3gp"],{offset:4})},ac3:function(bytes){var offset=getId3Offset(bytes);return bytesMatch(bytes,CONSTANTS.ac3,{offset:offset})},ts:function(bytes){if(bytes.length<189&&bytes.length>=1)return 71===bytes[0];for(var i=0;i+188<bytes.length&&i<188;){if(71===bytes[i]&&71===bytes[i+188])return!0;i+=1}return!1},flac:function(bytes){var offset=getId3Offset(bytes);return bytesMatch(bytes,CONSTANTS.flac,{offset:offset})},ogg:function(bytes){return bytesMatch(bytes,CONSTANTS.ogg)},avi:function(bytes){return bytesMatch(bytes,CONSTANTS.riff)&&bytesMatch(bytes,CONSTANTS.avi,{offset:8})},wav:function(bytes){return bytesMatch(bytes,CONSTANTS.riff)&&bytesMatch(bytes,CONSTANTS.wav,{offset:8})},h264:function(bytes){return function(bytes,type,nalLimit){return findNal(bytes,"h264",type,nalLimit)}(bytes,7,3).length},h265:function(bytes){return function(bytes,type,nalLimit){return findNal(bytes,"h265",type,nalLimit)}(bytes,[32,33],3).length}},isLikelyTypes=Object.keys(_isLikely).filter((function(t){return"ts"!==t&&"h264"!==t&&"h265"!==t})).concat(["ts","h264","h265"]);isLikelyTypes.forEach((function(type){var isLikelyFn=_isLikely[type];_isLikely[type]=function(bytes){return isLikelyFn(toUint8(bytes))}}));var secondsToVideoTs,secondsToAudioTs,videoTsToSeconds,audioTsToSeconds,isLikely=_isLikely,detectContainerForBytes=function(bytes){bytes=toUint8(bytes);for(var i=0;i<isLikelyTypes.length;i++){var type=isLikelyTypes[i];if(isLikely[type](bytes))return type}return""};secondsToVideoTs=function(seconds){return 9e4*seconds},secondsToAudioTs=function(seconds,sampleRate){return seconds*sampleRate},videoTsToSeconds=function(timestamp){return timestamp/9e4},audioTsToSeconds=function(timestamp,sampleRate){return timestamp/sampleRate};var clock_1=9e4;
+/*! @name @videojs/http-streaming @version 3.10.0 @license Apache-2.0 */
+const resolveUrl=resolveUrl$1,resolveManifestRedirect=(url,req)=>req&&req.responseURL&&url!==req.responseURL?req.responseURL:url,logger=source=>videojs.log.debug?videojs.log.debug.bind(videojs,"VHS:","".concat(source," >")):function(){};function merge(){const context=videojs.obj||videojs,fn=context.merge||context.mergeOptions;for(var _len24=arguments.length,args=new Array(_len24),_key24=0;_key24<_len24;_key24++)args[_key24]=arguments[_key24];return fn.apply(context,args)}function createTimeRanges(){const context=videojs.time||videojs,fn=context.createTimeRanges||context.createTimeRanges;for(var _len25=arguments.length,args=new Array(_len25),_key25=0;_key25<_len25;_key25++)args[_key25]=arguments[_key25];return fn.apply(context,args)}const filterRanges=function(timeRanges,predicate){const results=[];let i;if(timeRanges&&timeRanges.length)for(i=0;i<timeRanges.length;i++)predicate(timeRanges.start(i),timeRanges.end(i))&&results.push([timeRanges.start(i),timeRanges.end(i)]);return createTimeRanges(results)},findRange=function(buffered,time){return filterRanges(buffered,(function(start,end){return start-.1<=time&&end+.1>=time}))},findNextRange=function(timeRanges,time){return filterRanges(timeRanges,(function(start){return start-.03333333333333333>=time}))},printableRange=range=>{const strArr=[];if(!range||!range.length)return"";for(let i=0;i<range.length;i++)strArr.push(range.start(i)+" => "+range.end(i));return strArr.join(", ")},timeRangesToArray=timeRanges=>{const timeRangesList=[];for(let i=0;i<timeRanges.length;i++)timeRangesList.push({start:timeRanges.start(i),end:timeRanges.end(i)});return timeRangesList},lastBufferedEnd=function(a){if(a&&a.length&&a.end)return a.end(a.length-1)},timeAheadOf=function(range,startTime){let time=0;if(!range||!range.length)return time;for(let i=0;i<range.length;i++){const start=range.start(i),end=range.end(i);startTime>end||(time+=startTime>start&&startTime<=end?end-startTime:end-start)}return time},segmentDurationWithParts=(playlist,segment)=>{if(!segment.preload)return segment.duration;let result=0;return(segment.parts||[]).forEach((function(p){result+=p.duration})),(segment.preloadHints||[]).forEach((function(p){"PART"===p.type&&(result+=playlist.partTargetDuration)})),result},getPartsAndSegments=playlist=>(playlist.segments||[]).reduce(((acc,segment,si)=>(segment.parts?segment.parts.forEach((function(part,pi){acc.push({duration:part.duration,segmentIndex:si,partIndex:pi,part:part,segment:segment})})):acc.push({duration:segment.duration,segmentIndex:si,partIndex:null,segment:segment,part:null}),acc)),[]),getLastParts=media=>{const lastSegment=media.segments&&media.segments.length&&media.segments[media.segments.length-1];return lastSegment&&lastSegment.parts||[]},getKnownPartCount=_ref28=>{let{preloadSegment:preloadSegment}=_ref28;if(!preloadSegment)return;const{parts:parts,preloadHints:preloadHints}=preloadSegment;let partCount=(preloadHints||[]).reduce(((count,hint)=>count+("PART"===hint.type?1:0)),0);return partCount+=parts&&parts.length?parts.length:0,partCount},liveEdgeDelay=(main,media)=>{if(media.endList)return 0;if(main&&main.suggestedPresentationDelay)return main.suggestedPresentationDelay;const hasParts=getLastParts(media).length>0;return hasParts&&media.serverControl&&media.serverControl.partHoldBack?media.serverControl.partHoldBack:hasParts&&media.partTargetDuration?3*media.partTargetDuration:media.serverControl&&media.serverControl.holdBack?media.serverControl.holdBack:media.targetDuration?3*media.targetDuration:0},intervalDuration=function(playlist,endSequence,expired){if(void 0===endSequence&&(endSequence=playlist.mediaSequence+playlist.segments.length),endSequence<playlist.mediaSequence)return 0;const backward=function(playlist,endSequence){let result=0,i=endSequence-playlist.mediaSequence,segment=playlist.segments[i];if(segment){if(void 0!==segment.start)return{result:segment.start,precise:!0};if(void 0!==segment.end)return{result:segment.end-segment.duration,precise:!0}}for(;i--;){if(segment=playlist.segments[i],void 0!==segment.end)return{result:result+segment.end,precise:!0};if(result+=segmentDurationWithParts(playlist,segment),void 0!==segment.start)return{result:result+segment.start,precise:!0}}return{result:result,precise:!1}}(playlist,endSequence);if(backward.precise)return backward.result;const forward=function(playlist,endSequence){let segment,result=0,i=endSequence-playlist.mediaSequence;for(;i<playlist.segments.length;i++){if(segment=playlist.segments[i],void 0!==segment.start)return{result:segment.start-result,precise:!0};if(result+=segmentDurationWithParts(playlist,segment),void 0!==segment.end)return{result:segment.end-result,precise:!0}}return{result:-1,precise:!1}}(playlist,endSequence);return forward.precise?forward.result:backward.result+expired},duration=function(playlist,endSequence,expired){if(!playlist)return 0;if("number"!=typeof expired&&(expired=0),void 0===endSequence){if(playlist.totalDuration)return playlist.totalDuration;if(!playlist.endList)return window.Infinity}return intervalDuration(playlist,endSequence,expired)},sumDurations=function(_ref29){let{defaultDuration:defaultDuration,durationList:durationList,startIndex:startIndex,endIndex:endIndex}=_ref29,durations=0;if(startIndex>endIndex&&([startIndex,endIndex]=[endIndex,startIndex]),startIndex<0){for(let i=startIndex;i<Math.min(0,endIndex);i++)durations+=defaultDuration;startIndex=0}for(let i=startIndex;i<endIndex;i++)durations+=durationList[i].duration;return durations},playlistEnd=function(playlist,expired,useSafeLiveEnd,liveEdgePadding){if(!playlist||!playlist.segments)return null;if(playlist.endList)return duration(playlist);if(null===expired)return null;expired=expired||0;let lastSegmentEndTime=intervalDuration(playlist,playlist.mediaSequence+playlist.segments.length,expired);return useSafeLiveEnd&&(lastSegmentEndTime-=liveEdgePadding="number"==typeof liveEdgePadding?liveEdgePadding:liveEdgeDelay(null,playlist)),Math.max(0,lastSegmentEndTime)},isExcluded=function(playlist){return playlist.excludeUntil&&playlist.excludeUntil>Date.now()},isIncompatible=function(playlist){return playlist.excludeUntil&&playlist.excludeUntil===1/0},isEnabled=function(playlist){const excluded=isExcluded(playlist);return!playlist.disabled&&!excluded},hasAttribute=function(attr,playlist){return playlist.attributes&&playlist.attributes[attr]},isLowestEnabledRendition=(main,media)=>{if(1===main.playlists.length)return!0;const currentBandwidth=media.attributes.BANDWIDTH||Number.MAX_VALUE;return 0===main.playlists.filter((playlist=>!!isEnabled(playlist)&&(playlist.attributes.BANDWIDTH||0)<currentBandwidth)).length},playlistMatch=(a,b)=>!(!a&&!b||!a&&b||a&&!b)&&(a===b||(!(!a.id||!b.id||a.id!==b.id)||(!(!a.resolvedUri||!b.resolvedUri||a.resolvedUri!==b.resolvedUri)||!(!a.uri||!b.uri||a.uri!==b.uri)))),someAudioVariant=function(main,callback){const AUDIO=main&&main.mediaGroups&&main.mediaGroups.AUDIO||{};let found=!1;for(const groupName in AUDIO){for(const label in AUDIO[groupName])if(found=callback(AUDIO[groupName][label]),found)break;if(found)break}return!!found},isAudioOnly=main=>{if(!main||!main.playlists||!main.playlists.length){return someAudioVariant(main,(variant=>variant.playlists&&variant.playlists.length||variant.uri))}for(let i=0;i<main.playlists.length;i++){const playlist=main.playlists[i],CODECS=playlist.attributes&&playlist.attributes.CODECS;if(CODECS&&CODECS.split(",").every((c=>isAudioCodec(c))))continue;if(!someAudioVariant(main,(variant=>playlistMatch(playlist,variant))))return!1}return!0};var Playlist={liveEdgeDelay:liveEdgeDelay,duration:duration,seekable:function(playlist,expired,liveEdgePadding){const seekableStart=expired||0;let seekableEnd=playlistEnd(playlist,expired,!0,liveEdgePadding);return null===seekableEnd?createTimeRanges():(seekableEnd<seekableStart&&(seekableEnd=seekableStart),createTimeRanges(seekableStart,seekableEnd))},getMediaInfoForTime:function(_ref30){let{playlist:playlist,currentTime:currentTime,startingSegmentIndex:startingSegmentIndex,startingPartIndex:startingPartIndex,startTime:startTime,exactManifestTimings:exactManifestTimings}=_ref30,time=currentTime-startTime;const partsAndSegments=getPartsAndSegments(playlist);let startIndex=0;for(let i=0;i<partsAndSegments.length;i++){const partAndSegment=partsAndSegments[i];if(startingSegmentIndex===partAndSegment.segmentIndex&&("number"!=typeof startingPartIndex||"number"!=typeof partAndSegment.partIndex||startingPartIndex===partAndSegment.partIndex)){startIndex=i;break}}if(time<0){if(startIndex>0)for(let i=startIndex-1;i>=0;i--){const partAndSegment=partsAndSegments[i];if(time+=partAndSegment.duration,exactManifestTimings){if(time<0)continue}else if(time+.03333333333333333<=0)continue;return{partIndex:partAndSegment.partIndex,segmentIndex:partAndSegment.segmentIndex,startTime:startTime-sumDurations({defaultDuration:playlist.targetDuration,durationList:partsAndSegments,startIndex:startIndex,endIndex:i})}}return{partIndex:partsAndSegments[0]&&partsAndSegments[0].partIndex||null,segmentIndex:partsAndSegments[0]&&partsAndSegments[0].segmentIndex||0,startTime:currentTime}}if(startIndex<0){for(let i=startIndex;i<0;i++)if(time-=playlist.targetDuration,time<0)return{partIndex:partsAndSegments[0]&&partsAndSegments[0].partIndex||null,segmentIndex:partsAndSegments[0]&&partsAndSegments[0].segmentIndex||0,startTime:currentTime};startIndex=0}for(let i=startIndex;i<partsAndSegments.length;i++){const partAndSegment=partsAndSegments[i];time-=partAndSegment.duration;const isExtremelyCloseToTheEnd=partAndSegment.duration>.03333333333333333&&time+.03333333333333333>=0;if(!(0===time)&&!isExtremelyCloseToTheEnd||i===partsAndSegments.length-1){if(exactManifestTimings){if(time>0)continue}else if(time-.03333333333333333>=0)continue;return{partIndex:partAndSegment.partIndex,segmentIndex:partAndSegment.segmentIndex,startTime:startTime+sumDurations({defaultDuration:playlist.targetDuration,durationList:partsAndSegments,startIndex:startIndex,endIndex:i})}}}return{segmentIndex:partsAndSegments[partsAndSegments.length-1].segmentIndex,partIndex:partsAndSegments[partsAndSegments.length-1].partIndex,startTime:currentTime}},isEnabled:isEnabled,isDisabled:function(playlist){return playlist.disabled},isExcluded:isExcluded,isIncompatible:isIncompatible,playlistEnd:playlistEnd,isAes:function(media){for(let i=0;i<media.segments.length;i++)if(media.segments[i].key)return!0;return!1},hasAttribute:hasAttribute,estimateSegmentRequestTime:function(segmentDuration,bandwidth,playlist){let bytesReceived=arguments.length>3&&void 0!==arguments[3]?arguments[3]:0;if(!hasAttribute("BANDWIDTH",playlist))return NaN;const size=segmentDuration*playlist.attributes.BANDWIDTH;return(size-8*bytesReceived)/bandwidth},isLowestEnabledRendition:isLowestEnabledRendition,isAudioOnly:isAudioOnly,playlistMatch:playlistMatch,segmentDurationWithParts:segmentDurationWithParts};const{log:log}=videojs,createPlaylistID=(index,uri)=>"".concat(index,"-").concat(uri),groupID=(type,group,label)=>"placeholder-uri-".concat(type,"-").concat(group,"-").concat(label),forEachMediaGroup=(main,callback)=>{main.mediaGroups&&["AUDIO","SUBTITLES"].forEach((mediaType=>{if(main.mediaGroups[mediaType])for(const groupKey in main.mediaGroups[mediaType])for(const labelKey in main.mediaGroups[mediaType][groupKey]){const mediaProperties=main.mediaGroups[mediaType][groupKey][labelKey];callback(mediaProperties,mediaType,groupKey,labelKey)}}))},setupMediaPlaylist=_ref32=>{let{playlist:playlist,uri:uri,id:id}=_ref32;playlist.id=id,playlist.playlistErrors_=0,uri&&(playlist.uri=uri),playlist.attributes=playlist.attributes||{}},setupMediaPlaylists=main=>{let i=main.playlists.length;for(;i--;){const playlist=main.playlists[i];setupMediaPlaylist({playlist:playlist,id:createPlaylistID(i,playlist.uri)}),playlist.resolvedUri=resolveUrl(main.uri,playlist.uri),main.playlists[playlist.id]=playlist,main.playlists[playlist.uri]=playlist,playlist.attributes.BANDWIDTH||log.warn("Invalid playlist STREAM-INF detected. Missing BANDWIDTH attribute.")}},resolveMediaGroupUris=main=>{forEachMediaGroup(main,(properties=>{properties.uri&&(properties.resolvedUri=resolveUrl(main.uri,properties.uri))}))},addPropertiesToMain=function(main,uri){let createGroupID=arguments.length>2&&void 0!==arguments[2]?arguments[2]:groupID;main.uri=uri;for(let i=0;i<main.playlists.length;i++)if(!main.playlists[i].uri){const phonyUri="placeholder-uri-".concat(i);main.playlists[i].uri=phonyUri}const audioOnlyMain=isAudioOnly(main);forEachMediaGroup(main,((properties,mediaType,groupKey,labelKey)=>{if(!properties.playlists||!properties.playlists.length){if(audioOnlyMain&&"AUDIO"===mediaType&&!properties.uri)for(let i=0;i<main.playlists.length;i++){const p=main.playlists[i];if(p.attributes&&p.attributes.AUDIO&&p.attributes.AUDIO===groupKey)return}properties.playlists=[_extends$1({},properties)]}properties.playlists.forEach((function(p,i){const groupId=createGroupID(mediaType,groupKey,labelKey,p),id=createPlaylistID(i,groupId);p.uri?p.resolvedUri=p.resolvedUri||resolveUrl(main.uri,p.uri):(p.uri=0===i?groupId:id,p.resolvedUri=p.uri),p.id=p.id||id,p.attributes=p.attributes||{},main.playlists[p.id]=p,main.playlists[p.uri]=p}))})),setupMediaPlaylists(main),resolveMediaGroupUris(main)};class DateRangesStorage{constructor(){this.offset_=null,this.pendingDateRanges_=new Map,this.processedDateRanges_=new Map}setOffset(){let segments=arguments.length>0&&void 0!==arguments[0]?arguments[0]:[];if(null!==this.offset_)return;if(!segments.length)return;const[firstSegment]=segments;void 0!==firstSegment.programDateTime&&(this.offset_=firstSegment.programDateTime/1e3)}setPendingDateRanges(){let dateRanges=arguments.length>0&&void 0!==arguments[0]?arguments[0]:[];if(!dateRanges.length)return;const[dateRange]=dateRanges,startTime=dateRange.startDate.getTime();this.trimProcessedDateRanges_(startTime),this.pendingDateRanges_=dateRanges.reduce(((map,pendingDateRange)=>(map.set(pendingDateRange.id,pendingDateRange),map)),new Map)}processDateRange(dateRange){this.pendingDateRanges_.delete(dateRange.id),this.processedDateRanges_.set(dateRange.id,dateRange)}getDateRangesToProcess(){if(null===this.offset_)return[];const dateRangeClasses={},dateRangesToProcess=[];this.pendingDateRanges_.forEach(((dateRange,id)=>{if(!this.processedDateRanges_.has(id)&&(dateRange.startTime=dateRange.startDate.getTime()/1e3-this.offset_,dateRange.processDateRange=()=>this.processDateRange(dateRange),dateRangesToProcess.push(dateRange),dateRange.class))if(dateRangeClasses[dateRange.class]){const length=dateRangeClasses[dateRange.class].push(dateRange);dateRange.classListIndex=length-1}else dateRangeClasses[dateRange.class]=[dateRange],dateRange.classListIndex=0}));for(const dateRange of dateRangesToProcess){const classList=dateRangeClasses[dateRange.class]||[];dateRange.endDate?dateRange.endTime=dateRange.endDate.getTime()/1e3-this.offset_:dateRange.endOnNext&&classList[dateRange.classListIndex+1]?dateRange.endTime=classList[dateRange.classListIndex+1].startTime:dateRange.duration?dateRange.endTime=dateRange.startTime+dateRange.duration:dateRange.plannedDuration?dateRange.endTime=dateRange.startTime+dateRange.plannedDuration:dateRange.endTime=dateRange.startTime}return dateRangesToProcess}trimProcessedDateRanges_(startTime){new Map(this.processedDateRanges_).forEach(((dateRange,id)=>{dateRange.startDate.getTime()<startTime&&this.processedDateRanges_.delete(id)}))}}const{EventTarget:EventTarget$1}=videojs,updateSegment=(a,b)=>{if(!a)return b;const result=merge(a,b);if(a.preloadHints&&!b.preloadHints&&delete result.preloadHints,a.parts&&!b.parts)delete result.parts;else if(a.parts&&b.parts)for(let i=0;i<b.parts.length;i++)a.parts&&a.parts[i]&&(result.parts[i]=merge(a.parts[i],b.parts[i]));return!a.skipped&&b.skipped&&(result.skipped=!1),a.preload&&!b.preload&&(result.preload=!1),result},updateSegments=(original,update,offset)=>{const oldSegments=original.slice(),newSegments=update.slice();offset=offset||0;const result=[];let currentMap;for(let newIndex=0;newIndex<newSegments.length;newIndex++){const oldSegment=oldSegments[newIndex+offset],newSegment=newSegments[newIndex];oldSegment?(currentMap=oldSegment.map||currentMap,result.push(updateSegment(oldSegment,newSegment))):(currentMap&&!newSegment.map&&(newSegment.map=currentMap),result.push(newSegment))}return result},resolveSegmentUris=(segment,baseUri)=>{!segment.resolvedUri&&segment.uri&&(segment.resolvedUri=resolveUrl(baseUri,segment.uri)),segment.key&&!segment.key.resolvedUri&&(segment.key.resolvedUri=resolveUrl(baseUri,segment.key.uri)),segment.map&&!segment.map.resolvedUri&&(segment.map.resolvedUri=resolveUrl(baseUri,segment.map.uri)),segment.map&&segment.map.key&&!segment.map.key.resolvedUri&&(segment.map.key.resolvedUri=resolveUrl(baseUri,segment.map.key.uri)),segment.parts&&segment.parts.length&&segment.parts.forEach((p=>{p.resolvedUri||(p.resolvedUri=resolveUrl(baseUri,p.uri))})),segment.preloadHints&&segment.preloadHints.length&&segment.preloadHints.forEach((p=>{p.resolvedUri||(p.resolvedUri=resolveUrl(baseUri,p.uri))}))},getAllSegments=function(media){const segments=media.segments||[],preloadSegment=media.preloadSegment;if(preloadSegment&&preloadSegment.parts&&preloadSegment.parts.length){if(preloadSegment.preloadHints)for(let i=0;i<preloadSegment.preloadHints.length;i++)if("MAP"===preloadSegment.preloadHints[i].type)return segments;preloadSegment.duration=media.targetDuration,preloadSegment.preload=!0,segments.push(preloadSegment)}return segments},isPlaylistUnchanged=(a,b)=>a===b||a.segments&&b.segments&&a.segments.length===b.segments.length&&a.endList===b.endList&&a.mediaSequence===b.mediaSequence&&a.preloadSegment===b.preloadSegment,updateMain$1=function(main,newMedia){let unchangedCheck=arguments.length>2&&void 0!==arguments[2]?arguments[2]:isPlaylistUnchanged;const result=merge(main,{}),oldMedia=result.playlists[newMedia.id];if(!oldMedia)return null;if(unchangedCheck(oldMedia,newMedia))return null;newMedia.segments=getAllSegments(newMedia);const mergedPlaylist=merge(oldMedia,newMedia);if(mergedPlaylist.preloadSegment&&!newMedia.preloadSegment&&delete mergedPlaylist.preloadSegment,oldMedia.segments){if(newMedia.skip){newMedia.segments=newMedia.segments||[];for(let i=0;i<newMedia.skip.skippedSegments;i++)newMedia.segments.unshift({skipped:!0})}mergedPlaylist.segments=updateSegments(oldMedia.segments,newMedia.segments,newMedia.mediaSequence-oldMedia.mediaSequence)}mergedPlaylist.segments.forEach((segment=>{resolveSegmentUris(segment,mergedPlaylist.resolvedUri)}));for(let i=0;i<result.playlists.length;i++)result.playlists[i].id===newMedia.id&&(result.playlists[i]=mergedPlaylist);return result.playlists[newMedia.id]=mergedPlaylist,result.playlists[newMedia.uri]=mergedPlaylist,forEachMediaGroup(main,((properties,mediaType,groupKey,labelKey)=>{if(properties.playlists)for(let i=0;i<properties.playlists.length;i++)newMedia.id===properties.playlists[i].id&&(properties.playlists[i]=mergedPlaylist)})),result},refreshDelay=(media,update)=>{const segments=media.segments||[],lastSegment=segments[segments.length-1],lastPart=lastSegment&&lastSegment.parts&&lastSegment.parts[lastSegment.parts.length-1],lastDuration=lastPart&&lastPart.duration||lastSegment&&lastSegment.duration;return update&&lastDuration?1e3*lastDuration:500*(media.partTargetDuration||media.targetDuration||10)};class PlaylistLoader extends EventTarget$1{constructor(src,vhs){let options=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};if(super(),!src)throw new Error("A non-empty playlist URL or object is required");this.logger_=logger("PlaylistLoader");const{withCredentials:withCredentials=!1}=options;this.src=src,this.vhs_=vhs,this.withCredentials=withCredentials,this.addDateRangesToTextTrack_=options.addDateRangesToTextTrack;const vhsOptions=vhs.options_;this.customTagParsers=vhsOptions&&vhsOptions.customTagParsers||[],this.customTagMappers=vhsOptions&&vhsOptions.customTagMappers||[],this.llhls=vhsOptions&&vhsOptions.llhls,this.dateRangesStorage_=new DateRangesStorage,this.state="HAVE_NOTHING",this.handleMediaupdatetimeout_=this.handleMediaupdatetimeout_.bind(this),this.on("mediaupdatetimeout",this.handleMediaupdatetimeout_),this.on("loadedplaylist",this.handleLoadedPlaylist_.bind(this))}handleLoadedPlaylist_(){const mediaPlaylist=this.media();if(!mediaPlaylist)return;this.dateRangesStorage_.setOffset(mediaPlaylist.segments),this.dateRangesStorage_.setPendingDateRanges(mediaPlaylist.dateRanges);const availableDateRanges=this.dateRangesStorage_.getDateRangesToProcess();availableDateRanges.length&&this.addDateRangesToTextTrack_&&this.addDateRangesToTextTrack_(availableDateRanges)}handleMediaupdatetimeout_(){if("HAVE_METADATA"!==this.state)return;const media=this.media();let uri=resolveUrl(this.main.uri,media.uri);this.llhls&&(uri=((uri,media)=>{if(media.endList||!media.serverControl)return uri;const parameters={};if(media.serverControl.canBlockReload){const{preloadSegment:preloadSegment}=media;let nextMSN=media.mediaSequence+media.segments.length;if(preloadSegment){const parts=preloadSegment.parts||[],nextPart=getKnownPartCount(media)-1;nextPart>-1&&nextPart!==parts.length-1&&(parameters._HLS_part=nextPart),(nextPart>-1||parts.length)&&nextMSN--}parameters._HLS_msn=nextMSN}if(media.serverControl&&media.serverControl.canSkipUntil&&(parameters._HLS_skip=media.serverControl.canSkipDateranges?"v2":"YES"),Object.keys(parameters).length){const parsedUri=new window.URL(uri);["_HLS_skip","_HLS_msn","_HLS_part"].forEach((function(name){parameters.hasOwnProperty(name)&&parsedUri.searchParams.set(name,parameters[name])})),uri=parsedUri.toString()}return uri})(uri,media)),this.state="HAVE_CURRENT_METADATA",this.request=this.vhs_.xhr({uri:uri,withCredentials:this.withCredentials},((error,req)=>{if(this.request)return error?this.playlistRequestError(this.request,this.media(),"HAVE_METADATA"):void this.haveMetadata({playlistString:this.request.responseText,url:this.media().uri,id:this.media().id})}))}playlistRequestError(xhr,playlist,startingState){const{uri:uri,id:id}=playlist;this.request=null,startingState&&(this.state=startingState),this.error={playlist:this.main.playlists[id],status:xhr.status,message:"HLS playlist request error at URL: ".concat(uri,"."),responseText:xhr.responseText,code:xhr.status>=500?4:2},this.trigger("error")}parseManifest_(_ref33){let{url:url,manifestString:manifestString}=_ref33;return(_ref31=>{let{onwarn:onwarn,oninfo:oninfo,manifestString:manifestString,customTagParsers:customTagParsers=[],customTagMappers:customTagMappers=[],llhls:llhls}=_ref31;const parser=new Parser;onwarn&&parser.on("warn",onwarn),oninfo&&parser.on("info",oninfo),customTagParsers.forEach((customParser=>parser.addParser(customParser))),customTagMappers.forEach((mapper=>parser.addTagMapper(mapper))),parser.push(manifestString),parser.end();const manifest=parser.manifest;if(llhls||(["preloadSegment","skip","serverControl","renditionReports","partInf","partTargetDuration"].forEach((function(k){manifest.hasOwnProperty(k)&&delete manifest[k]})),manifest.segments&&manifest.segments.forEach((function(segment){["parts","preloadHints"].forEach((function(k){segment.hasOwnProperty(k)&&delete segment[k]}))}))),!manifest.targetDuration){let targetDuration=10;manifest.segments&&manifest.segments.length&&(targetDuration=manifest.segments.reduce(((acc,s)=>Math.max(acc,s.duration)),0)),onwarn&&onwarn({message:"manifest has no targetDuration defaulting to ".concat(targetDuration)}),manifest.targetDuration=targetDuration}const parts=getLastParts(manifest);if(parts.length&&!manifest.partTargetDuration){const partTargetDuration=parts.reduce(((acc,p)=>Math.max(acc,p.duration)),0);onwarn&&(onwarn({message:"manifest has no partTargetDuration defaulting to ".concat(partTargetDuration)}),log.error("LL-HLS manifest has parts but lacks required #EXT-X-PART-INF:PART-TARGET value. See https://datatracker.ietf.org/doc/html/draft-pantos-hls-rfc8216bis-09#section-4.4.3.7. Playback is not guaranteed.")),manifest.partTargetDuration=partTargetDuration}return manifest})({onwarn:_ref34=>{let{message:message}=_ref34;return this.logger_("m3u8-parser warn for ".concat(url,": ").concat(message))},oninfo:_ref35=>{let{message:message}=_ref35;return this.logger_("m3u8-parser info for ".concat(url,": ").concat(message))},manifestString:manifestString,customTagParsers:this.customTagParsers,customTagMappers:this.customTagMappers,llhls:this.llhls})}haveMetadata(_ref36){let{playlistString:playlistString,playlistObject:playlistObject,url:url,id:id}=_ref36;this.request=null,this.state="HAVE_METADATA";const playlist=playlistObject||this.parseManifest_({url:url,manifestString:playlistString});playlist.lastRequest=Date.now(),setupMediaPlaylist({playlist:playlist,uri:url,id:id});const update=updateMain$1(this.main,playlist);this.targetDuration=playlist.partTargetDuration||playlist.targetDuration,this.pendingMedia_=null,update?(this.main=update,this.media_=this.main.playlists[id]):this.trigger("playlistunchanged"),this.updateMediaUpdateTimeout_(refreshDelay(this.media(),!!update)),this.trigger("loadedplaylist")}dispose(){this.trigger("dispose"),this.stopRequest(),window.clearTimeout(this.mediaUpdateTimeout),window.clearTimeout(this.finalRenditionTimeout),this.dateRangesStorage_=new DateRangesStorage,this.off()}stopRequest(){if(this.request){const oldRequest=this.request;this.request=null,oldRequest.onreadystatechange=null,oldRequest.abort()}}media(playlist,shouldDelay){if(!playlist)return this.media_;if("HAVE_NOTHING"===this.state)throw new Error("Cannot switch media playlist from "+this.state);if("string"==typeof playlist){if(!this.main.playlists[playlist])throw new Error("Unknown playlist URI: "+playlist);playlist=this.main.playlists[playlist]}if(window.clearTimeout(this.finalRenditionTimeout),shouldDelay){const delay=(playlist.partTargetDuration||playlist.targetDuration)/2*1e3||5e3;return void(this.finalRenditionTimeout=window.setTimeout(this.media.bind(this,playlist,!1),delay))}const startingState=this.state,mediaChange=!this.media_||playlist.id!==this.media_.id,mainPlaylistRef=this.main.playlists[playlist.id];if(mainPlaylistRef&&mainPlaylistRef.endList||playlist.endList&&playlist.segments.length)return this.request&&(this.request.onreadystatechange=null,this.request.abort(),this.request=null),this.state="HAVE_METADATA",this.media_=playlist,void(mediaChange&&(this.trigger("mediachanging"),"HAVE_MAIN_MANIFEST"===startingState?this.trigger("loadedmetadata"):this.trigger("mediachange")));if(this.updateMediaUpdateTimeout_(refreshDelay(playlist,!0)),mediaChange){if(this.state="SWITCHING_MEDIA",this.request){if(playlist.resolvedUri===this.request.url)return;this.request.onreadystatechange=null,this.request.abort(),this.request=null}this.media_&&this.trigger("mediachanging"),this.pendingMedia_=playlist,this.request=this.vhs_.xhr({uri:playlist.resolvedUri,withCredentials:this.withCredentials},((error,req)=>{if(this.request){if(playlist.lastRequest=Date.now(),playlist.resolvedUri=resolveManifestRedirect(playlist.resolvedUri,req),error)return this.playlistRequestError(this.request,playlist,startingState);this.haveMetadata({playlistString:req.responseText,url:playlist.uri,id:playlist.id}),"HAVE_MAIN_MANIFEST"===startingState?this.trigger("loadedmetadata"):this.trigger("mediachange")}}))}}pause(){this.mediaUpdateTimeout&&(window.clearTimeout(this.mediaUpdateTimeout),this.mediaUpdateTimeout=null),this.stopRequest(),"HAVE_NOTHING"===this.state&&(this.started=!1),"SWITCHING_MEDIA"===this.state?this.media_?this.state="HAVE_METADATA":this.state="HAVE_MAIN_MANIFEST":"HAVE_CURRENT_METADATA"===this.state&&(this.state="HAVE_METADATA")}load(shouldDelay){this.mediaUpdateTimeout&&(window.clearTimeout(this.mediaUpdateTimeout),this.mediaUpdateTimeout=null);const media=this.media();if(shouldDelay){const delay=media?(media.partTargetDuration||media.targetDuration)/2*1e3:5e3;this.mediaUpdateTimeout=window.setTimeout((()=>{this.mediaUpdateTimeout=null,this.load()}),delay)}else this.started?media&&!media.endList?this.trigger("mediaupdatetimeout"):this.trigger("loadedplaylist"):this.start()}updateMediaUpdateTimeout_(delay){this.mediaUpdateTimeout&&(window.clearTimeout(this.mediaUpdateTimeout),this.mediaUpdateTimeout=null),this.media()&&!this.media().endList&&(this.mediaUpdateTimeout=window.setTimeout((()=>{this.mediaUpdateTimeout=null,this.trigger("mediaupdatetimeout"),this.updateMediaUpdateTimeout_(delay)}),delay))}start(){if(this.started=!0,"object"==typeof this.src)return this.src.uri||(this.src.uri=window.location.href),this.src.resolvedUri=this.src.uri,void setTimeout((()=>{this.setupInitialPlaylist(this.src)}),0);this.request=this.vhs_.xhr({uri:this.src,withCredentials:this.withCredentials},((error,req)=>{if(!this.request)return;if(this.request=null,error)return this.error={status:req.status,message:"HLS playlist request error at URL: ".concat(this.src,"."),responseText:req.responseText,code:2},"HAVE_NOTHING"===this.state&&(this.started=!1),this.trigger("error");this.src=resolveManifestRedirect(this.src,req);const manifest=this.parseManifest_({manifestString:req.responseText,url:this.src});this.setupInitialPlaylist(manifest)}))}srcUri(){return"string"==typeof this.src?this.src:this.src.uri}setupInitialPlaylist(manifest){if(this.state="HAVE_MAIN_MANIFEST",manifest.playlists)return this.main=manifest,addPropertiesToMain(this.main,this.srcUri()),manifest.playlists.forEach((playlist=>{playlist.segments=getAllSegments(playlist),playlist.segments.forEach((segment=>{resolveSegmentUris(segment,playlist.resolvedUri)}))})),this.trigger("loadedplaylist"),void(this.request||this.media(this.main.playlists[0]));const uri=this.srcUri()||window.location.href;this.main=((media,uri)=>{const id=createPlaylistID(0,uri),main={mediaGroups:{AUDIO:{},VIDEO:{},"CLOSED-CAPTIONS":{},SUBTITLES:{}},uri:window.location.href,resolvedUri:window.location.href,playlists:[{uri:uri,id:id,resolvedUri:uri,attributes:{}}]};return main.playlists[id]=main.playlists[0],main.playlists[uri]=main.playlists[0],main})(0,uri),this.haveMetadata({playlistObject:manifest,url:uri,id:this.main.playlists[0].id}),this.trigger("loadedmetadata")}updateOrDeleteClone(clone,isUpdate){const main=this.main,pathway=clone.ID;let i=main.playlists.length;for(;i--;){const p=main.playlists[i];if(p.attributes["PATHWAY-ID"]===pathway){const oldPlaylistUri=p.resolvedUri,oldPlaylistId=p.id;if(isUpdate){const newPlaylistUri=this.createCloneURI_(p.resolvedUri,clone),newPlaylistId=createPlaylistID(pathway,newPlaylistUri),attributes=this.createCloneAttributes_(pathway,p.attributes),updatedPlaylist=this.createClonePlaylist_(p,newPlaylistId,clone,attributes);main.playlists[i]=updatedPlaylist,main.playlists[newPlaylistId]=updatedPlaylist,main.playlists[newPlaylistUri]=updatedPlaylist}else main.playlists.splice(i,1);delete main.playlists[oldPlaylistId],delete main.playlists[oldPlaylistUri]}}this.updateOrDeleteCloneMedia(clone,isUpdate)}updateOrDeleteCloneMedia(clone,isUpdate){const main=this.main,id=clone.ID;["AUDIO","SUBTITLES","CLOSED-CAPTIONS"].forEach((mediaType=>{if(main.mediaGroups[mediaType]&&main.mediaGroups[mediaType][id])for(const groupKey in main.mediaGroups[mediaType])if(groupKey===id){for(const labelKey in main.mediaGroups[mediaType][groupKey]){main.mediaGroups[mediaType][groupKey][labelKey].playlists.forEach(((p,i)=>{const oldMediaPlaylist=main.playlists[p.id],oldPlaylistId=oldMediaPlaylist.id,oldPlaylistUri=oldMediaPlaylist.resolvedUri;delete main.playlists[oldPlaylistId],delete main.playlists[oldPlaylistUri]}))}delete main.mediaGroups[mediaType][groupKey]}})),isUpdate&&this.createClonedMediaGroups_(clone)}addClonePathway(clone){let basePlaylist=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};const main=this.main,index=main.playlists.length,uri=this.createCloneURI_(basePlaylist.resolvedUri,clone),playlistId=createPlaylistID(clone.ID,uri),attributes=this.createCloneAttributes_(clone.ID,basePlaylist.attributes),playlist=this.createClonePlaylist_(basePlaylist,playlistId,clone,attributes);main.playlists[index]=playlist,main.playlists[playlistId]=playlist,main.playlists[uri]=playlist,this.createClonedMediaGroups_(clone)}createClonedMediaGroups_(clone){const id=clone.ID,baseID=clone["BASE-ID"],main=this.main;["AUDIO","SUBTITLES","CLOSED-CAPTIONS"].forEach((mediaType=>{if(main.mediaGroups[mediaType]&&!main.mediaGroups[mediaType][id])for(const groupKey in main.mediaGroups[mediaType])if(groupKey===baseID){main.mediaGroups[mediaType][id]={};for(const labelKey in main.mediaGroups[mediaType][groupKey]){const oldMedia=main.mediaGroups[mediaType][groupKey][labelKey];main.mediaGroups[mediaType][id][labelKey]=_extends$1({},oldMedia);const newMedia=main.mediaGroups[mediaType][id][labelKey],newUri=this.createCloneURI_(oldMedia.resolvedUri,clone);newMedia.resolvedUri=newUri,newMedia.uri=newUri,newMedia.playlists=[],oldMedia.playlists.forEach(((p,i)=>{const oldMediaPlaylist=main.playlists[p.id],group=groupID(mediaType,id,labelKey),newPlaylistID=createPlaylistID(id,group);if(oldMediaPlaylist&&!main.playlists[newPlaylistID]){const newMediaPlaylist=this.createClonePlaylist_(oldMediaPlaylist,newPlaylistID,clone),newPlaylistUri=newMediaPlaylist.resolvedUri;main.playlists[newPlaylistID]=newMediaPlaylist,main.playlists[newPlaylistUri]=newMediaPlaylist}newMedia.playlists[i]=this.createClonePlaylist_(p,newPlaylistID,clone)}))}}}))}createClonePlaylist_(basePlaylist,id,clone,attributes){const uri=this.createCloneURI_(basePlaylist.resolvedUri,clone),newProps={resolvedUri:uri,uri:uri,id:id};return basePlaylist.segments&&(newProps.segments=[]),attributes&&(newProps.attributes=attributes),merge(basePlaylist,newProps)}createCloneURI_(baseURI,clone){const uri=new URL(baseURI);uri.hostname=clone["URI-REPLACEMENT"].HOST;const params=clone["URI-REPLACEMENT"].PARAMS;for(const key of Object.keys(params))uri.searchParams.set(key,params[key]);return uri.href}createCloneAttributes_(id,oldAttributes){const attributes={"PATHWAY-ID":id};return["AUDIO","SUBTITLES","CLOSED-CAPTIONS"].forEach((mediaType=>{oldAttributes[mediaType]&&(attributes[mediaType]=id)})),attributes}getKeyIdSet(playlist){if(playlist.contentProtection){const keyIds=new Set;for(const keysystem in playlist.contentProtection){const keyId=playlist.contentProtection[keysystem].attributes.keyId;keyId&&keyIds.add(keyId.toLowerCase())}return keyIds}}}const{xhr:videojsXHR}=videojs,callbackWrapper=function(request,error,response,callback){const reqResponse="arraybuffer"===request.responseType?request.response:request.responseText;!error&&reqResponse&&(request.responseTime=Date.now(),request.roundTripTime=request.responseTime-request.requestTime,request.bytesReceived=reqResponse.byteLength||reqResponse.length,request.bandwidth||(request.bandwidth=Math.floor(request.bytesReceived/request.roundTripTime*8*1e3))),response.headers&&(request.responseHeaders=response.headers),error&&"ETIMEDOUT"===error.code&&(request.timedout=!0),error||request.aborted||200===response.statusCode||206===response.statusCode||0===response.statusCode||(error=new Error("XHR Failed with a response of: "+(request&&(reqResponse||request.responseText)))),callback(error,request)},xhrFactory=function(){const xhr=function XhrFunction(options,callback){options=merge({timeout:45e3},options);const beforeRequest=XhrFunction.beforeRequest||videojs.Vhs.xhr.beforeRequest,_requestCallbackSet=XhrFunction._requestCallbackSet||videojs.Vhs.xhr._requestCallbackSet||new Set,_responseCallbackSet=XhrFunction._responseCallbackSet||videojs.Vhs.xhr._responseCallbackSet;beforeRequest&&"function"==typeof beforeRequest&&(videojs.log.warn("beforeRequest is deprecated, use onRequest instead."),_requestCallbackSet.add(beforeRequest));const xhrMethod=!0===videojs.Vhs.xhr.original?videojsXHR:videojs.Vhs.xhr,beforeRequestOptions=((requestSet,options)=>{if(!requestSet||!requestSet.size)return;let newOptions=options;return requestSet.forEach((requestCallback=>{newOptions=requestCallback(newOptions)})),newOptions})(_requestCallbackSet,options);_requestCallbackSet.delete(beforeRequest);const request=xhrMethod(beforeRequestOptions||options,(function(error,response){return((responseSet,request,error,response)=>{responseSet&&responseSet.size&&responseSet.forEach((responseCallback=>{responseCallback(request,error,response)}))})(_responseCallbackSet,request,error,response),callbackWrapper(request,error,response,callback)})),originalAbort=request.abort;return request.abort=function(){return request.aborted=!0,originalAbort.apply(request,arguments)},request.uri=options.uri,request.requestTime=Date.now(),request};return xhr.original=!0,xhr},segmentXhrHeaders=function(segment){const headers={};return segment.byterange&&(headers.Range=function(byterange){let byterangeEnd;const byterangeStart=byterange.offset;return byterangeEnd="bigint"==typeof byterange.offset||"bigint"==typeof byterange.length?window.BigInt(byterange.offset)+window.BigInt(byterange.length)-window.BigInt(1):byterange.offset+byterange.length-1,"bytes="+byterangeStart+"-"+byterangeEnd}(segment.byterange)),headers},textRange=function(range,i){return range.start(i)+"-"+range.end(i)},formatHexString=function(e,i){const value=e.toString(16);return"00".substring(0,2-value.length)+value+(i%2?" ":"")},formatAsciiString=function(e){return e>=32&&e<126?String.fromCharCode(e):"."},createTransferableMessage=function(message){const transferable={};return Object.keys(message).forEach((key=>{const value=message[key];isArrayBufferView(value)?transferable[key]={bytes:value.buffer,byteOffset:value.byteOffset,byteLength:value.byteLength}:transferable[key]=value})),transferable},initSegmentId=function(initSegment){const byterange=initSegment.byterange||{length:1/0,offset:0};return[byterange.length,byterange.offset,initSegment.resolvedUri].join(",")},segmentKeyId=function(key){return key.resolvedUri},hexDump=data=>{const bytes=Array.prototype.slice.call(data);let hex,ascii,result="";for(let j=0;j<bytes.length/16;j++)hex=bytes.slice(16*j,16*j+16).map(formatHexString).join(""),ascii=bytes.slice(16*j,16*j+16).map(formatAsciiString).join(""),result+=hex+" "+ascii+"\n";return result};var utils=Object.freeze({__proto__:null,createTransferableMessage:createTransferableMessage,initSegmentId:initSegmentId,segmentKeyId:segmentKeyId,hexDump:hexDump,tagDump:_ref37=>{let{bytes:bytes}=_ref37;return hexDump(bytes)},textRanges:ranges=>{let i,result="";for(i=0;i<ranges.length;i++)result+=textRange(ranges,i)+" ";return result}});const getProgramTime=_ref38=>{let{playlist:playlist,time:time,callback:callback}=_ref38;if(!callback)throw new Error("getProgramTime: callback must be provided");if(!playlist||void 0===time)return callback({message:"getProgramTime: playlist and time must be provided"});const matchedSegment=((time,playlist)=>{if(!playlist||!playlist.segments||0===playlist.segments.length)return null;let segment,segmentEnd=0;for(let i=0;i<playlist.segments.length&&(segment=playlist.segments[i],segmentEnd=segment.videoTimingInfo?segment.videoTimingInfo.transmuxedPresentationEnd:segmentEnd+segment.duration,!(time<=segmentEnd));i++);const lastSegment=playlist.segments[playlist.segments.length-1];if(lastSegment.videoTimingInfo&&lastSegment.videoTimingInfo.transmuxedPresentationEnd<time)return null;if(time>segmentEnd){if(time>segmentEnd+.25*lastSegment.duration)return null;segment=lastSegment}return{segment:segment,estimatedStart:segment.videoTimingInfo?segment.videoTimingInfo.transmuxedPresentationStart:segmentEnd-segment.duration,type:segment.videoTimingInfo?"accurate":"estimate"}})(time,playlist);if(!matchedSegment)return callback({message:"valid programTime was not found"});if("estimate"===matchedSegment.type)return callback({message:"Accurate programTime could not be determined. Please seek to e.seekTime and try again",seekTime:matchedSegment.estimatedStart});const programTimeObject={mediaSeconds:time},programTime=((playerTime,segment)=>{if(!segment.dateTimeObject)return null;const transmuxerPrependedSeconds=segment.videoTimingInfo.transmuxerPrependedSeconds,offsetFromSegmentStart=playerTime-(segment.videoTimingInfo.transmuxedPresentationStart+transmuxerPrependedSeconds);return new Date(segment.dateTimeObject.getTime()+1e3*offsetFromSegmentStart)})(time,matchedSegment.segment);return programTime&&(programTimeObject.programDateTime=programTime.toISOString()),callback(null,programTimeObject)},seekToProgramTime=_ref39=>{let{programTime:programTime,playlist:playlist,retryCount:retryCount=2,seekTo:seekTo,pauseAfterSeek:pauseAfterSeek=!0,tech:tech,callback:callback}=_ref39;if(!callback)throw new Error("seekToProgramTime: callback must be provided");if(void 0===programTime||!playlist||!seekTo)return callback({message:"seekToProgramTime: programTime, seekTo and playlist must be provided"});if(!playlist.endList&&!tech.hasStarted_)return callback({message:"player must be playing a live stream to start buffering"});if(!(playlist=>{if(!playlist.segments||0===playlist.segments.length)return!1;for(let i=0;i<playlist.segments.length;i++)if(!playlist.segments[i].dateTimeObject)return!1;return!0})(playlist))return callback({message:"programDateTime tags must be provided in the manifest "+playlist.resolvedUri});const matchedSegment=((programTime,playlist)=>{let dateTimeObject;try{dateTimeObject=new Date(programTime)}catch(e){return null}if(!playlist||!playlist.segments||0===playlist.segments.length)return null;let segment=playlist.segments[0];if(dateTimeObject<new Date(segment.dateTimeObject))return null;for(let i=0;i<playlist.segments.length-1&&(segment=playlist.segments[i],!(dateTimeObject<new Date(playlist.segments[i+1].dateTimeObject)));i++);const lastSegment=playlist.segments[playlist.segments.length-1],lastSegmentStart=lastSegment.dateTimeObject,lastSegmentDuration=lastSegment.videoTimingInfo?(videoTimingInfo=lastSegment.videoTimingInfo).transmuxedPresentationEnd-videoTimingInfo.transmuxedPresentationStart-videoTimingInfo.transmuxerPrependedSeconds:lastSegment.duration+.25*lastSegment.duration;var videoTimingInfo;return dateTimeObject>new Date(lastSegmentStart.getTime()+1e3*lastSegmentDuration)?null:(dateTimeObject>new Date(lastSegmentStart)&&(segment=lastSegment),{segment:segment,estimatedStart:segment.videoTimingInfo?segment.videoTimingInfo.transmuxedPresentationStart:Playlist.duration(playlist,playlist.mediaSequence+playlist.segments.indexOf(segment)),type:segment.videoTimingInfo?"accurate":"estimate"})})(programTime,playlist);if(!matchedSegment)return callback({message:"".concat(programTime," was not found in the stream")});const segment=matchedSegment.segment,mediaOffset=((comparisonTimeStamp,programTime)=>{let segmentDateTime,programDateTime;try{segmentDateTime=new Date(comparisonTimeStamp),programDateTime=new Date(programTime)}catch(e){}const segmentTimeEpoch=segmentDateTime.getTime();return(programDateTime.getTime()-segmentTimeEpoch)/1e3})(segment.dateTimeObject,programTime);if("estimate"===matchedSegment.type)return 0===retryCount?callback({message:"".concat(programTime," is not buffered yet. Try again")}):(seekTo(matchedSegment.estimatedStart+mediaOffset),void tech.one("seeked",(()=>{seekToProgramTime({programTime:programTime,playlist:playlist,retryCount:retryCount-1,seekTo:seekTo,pauseAfterSeek:pauseAfterSeek,tech:tech,callback:callback})})));const seekToTime=segment.start+mediaOffset;tech.one("seeked",(()=>callback(null,tech.currentTime()))),pauseAfterSeek&&tech.pause(),seekTo(seekToTime)},callbackOnCompleted=(request,cb)=>{if(4===request.readyState)return cb()},containerRequest=(uri,xhr,cb)=>{let id3Offset,bytes=[],finished=!1;const endRequestAndCallback=function(err,req,type,_bytes){return req.abort(),finished=!0,cb(err,req,type,_bytes)},progressListener=function(error,request){if(finished)return;if(error)return endRequestAndCallback(error,request,"",bytes);const newPart=request.responseText.substring(bytes&&bytes.byteLength||0,request.responseText.length);if(bytes=function(){for(var _len=arguments.length,buffers=new Array(_len),_key=0;_key<_len;_key++)buffers[_key]=arguments[_key];if(buffers=buffers.filter((function(b){return b&&(b.byteLength||b.length)&&"string"!=typeof b})),buffers.length<=1)return toUint8(buffers[0]);var totalLen=buffers.reduce((function(total,buf,i){return total+(buf.byteLength||buf.length)}),0),tempBuffer=new Uint8Array(totalLen),offset=0;return buffers.forEach((function(buf){buf=toUint8(buf),tempBuffer.set(buf,offset),offset+=buf.byteLength})),tempBuffer}(bytes,stringToBytes(newPart,!0)),id3Offset=id3Offset||getId3Offset(bytes),bytes.length<10||id3Offset&&bytes.length<id3Offset+2)return callbackOnCompleted(request,(()=>endRequestAndCallback(error,request,"",bytes)));const type=detectContainerForBytes(bytes);return"ts"===type&&bytes.length<188||!type&&bytes.length<376?callbackOnCompleted(request,(()=>endRequestAndCallback(error,request,"",bytes))):endRequestAndCallback(null,request,type,bytes)},options={uri:uri,beforeSend(request){request.overrideMimeType("text/plain; charset=x-user-defined"),request.addEventListener("progress",(function(_ref40){let{total:total,loaded:loaded}=_ref40;return callbackWrapper(request,null,{statusCode:request.status},progressListener)}))}},request=xhr(options,(function(error,response){return callbackWrapper(request,error,response,progressListener)}));return request},{EventTarget:EventTarget}=videojs,dashPlaylistUnchanged=function(a,b){if(!isPlaylistUnchanged(a,b))return!1;if(a.sidx&&b.sidx&&(a.sidx.offset!==b.sidx.offset||a.sidx.length!==b.sidx.length))return!1;if(!a.sidx&&b.sidx||a.sidx&&!b.sidx)return!1;if(a.segments&&!b.segments||!a.segments&&b.segments)return!1;if(!a.segments&&!b.segments)return!0;for(let i=0;i<a.segments.length;i++){const aSegment=a.segments[i],bSegment=b.segments[i];if(aSegment.uri!==bSegment.uri)return!1;if(!aSegment.byterange&&!bSegment.byterange)continue;const aByterange=aSegment.byterange,bByterange=bSegment.byterange;if(aByterange&&!bByterange||!aByterange&&bByterange)return!1;if(aByterange.offset!==bByterange.offset||aByterange.length!==bByterange.length)return!1}return!0},dashGroupId=(type,group,label,playlist)=>{const playlistId=playlist.attributes.NAME||label;return"placeholder-uri-".concat(type,"-").concat(group,"-").concat(playlistId)},parseMainXml=_ref41=>{let{mainXml:mainXml,srcUrl:srcUrl,clientOffset:clientOffset,sidxMapping:sidxMapping,previousManifest:previousManifest}=_ref41;const manifest=function(manifestString){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};const parsedManifestInfo=inheritAttributes(stringToMpdXml(manifestString),options),playlists=toPlaylists(parsedManifestInfo.representationInfo);return toM3u8({dashPlaylists:playlists,locations:parsedManifestInfo.locations,contentSteering:parsedManifestInfo.contentSteeringInfo,sidxMapping:options.sidxMapping,previousManifest:options.previousManifest,eventStream:parsedManifestInfo.eventStream})}(mainXml,{manifestUri:srcUrl,clientOffset:clientOffset,sidxMapping:sidxMapping,previousManifest:previousManifest});return addPropertiesToMain(manifest,srcUrl,dashGroupId),manifest},updateMain=(oldMain,newMain,sidxMapping)=>{let noChanges=!0,update=merge(oldMain,{duration:newMain.duration,minimumUpdatePeriod:newMain.minimumUpdatePeriod,timelineStarts:newMain.timelineStarts});for(let i=0;i<newMain.playlists.length;i++){const playlist=newMain.playlists[i];if(playlist.sidx){const sidxKey=generateSidxKey(playlist.sidx);sidxMapping&&sidxMapping[sidxKey]&&sidxMapping[sidxKey].sidx&&addSidxSegmentsToPlaylist$1(playlist,sidxMapping[sidxKey].sidx,playlist.sidx.resolvedUri)}const playlistUpdate=updateMain$1(update,playlist,dashPlaylistUnchanged);playlistUpdate&&(update=playlistUpdate,noChanges=!1)}return forEachMediaGroup(newMain,((properties,type,group,label)=>{if(properties.playlists&&properties.playlists.length){const id=properties.playlists[0].id,playlistUpdate=updateMain$1(update,properties.playlists[0],dashPlaylistUnchanged);playlistUpdate&&(update=playlistUpdate,label in update.mediaGroups[type][group]||(update.mediaGroups[type][group][label]=properties),update.mediaGroups[type][group][label].playlists[0]=update.playlists[id],noChanges=!1)}})),((update,newMain)=>{forEachMediaGroup(update,((properties,type,group,label)=>{label in newMain.mediaGroups[type][group]||delete update.mediaGroups[type][group][label]}))})(update,newMain),newMain.minimumUpdatePeriod!==oldMain.minimumUpdatePeriod&&(noChanges=!1),noChanges?null:update},equivalentSidx=(a,b)=>(Boolean(!a.map&&!b.map)||Boolean(a.map&&b.map&&a.map.byterange.offset===b.map.byterange.offset&&a.map.byterange.length===b.map.byterange.length))&&a.uri===b.uri&&a.byterange.offset===b.byterange.offset&&a.byterange.length===b.byterange.length,compareSidxEntry=(playlists,oldSidxMapping)=>{const newSidxMapping={};for(const id in playlists){const currentSidxInfo=playlists[id].sidx;if(currentSidxInfo){const key=generateSidxKey(currentSidxInfo);if(!oldSidxMapping[key])break;const savedSidxInfo=oldSidxMapping[key].sidxInfo;equivalentSidx(savedSidxInfo,currentSidxInfo)&&(newSidxMapping[key]=oldSidxMapping[key])}}return newSidxMapping};class DashPlaylistLoader extends EventTarget{constructor(srcUrlOrPlaylist,vhs){let options=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{},mainPlaylistLoader=arguments.length>3?arguments[3]:void 0;super(),this.mainPlaylistLoader_=mainPlaylistLoader||this,mainPlaylistLoader||(this.isMain_=!0);const{withCredentials:withCredentials=!1}=options;if(this.vhs_=vhs,this.withCredentials=withCredentials,this.addMetadataToTextTrack=options.addMetadataToTextTrack,!srcUrlOrPlaylist)throw new Error("A non-empty playlist URL or object is required");this.on("minimumUpdatePeriod",(()=>{this.refreshXml_()})),this.on("mediaupdatetimeout",(()=>{this.refreshMedia_(this.media().id)})),this.state="HAVE_NOTHING",this.loadedPlaylists_={},this.logger_=logger("DashPlaylistLoader"),this.isMain_?(this.mainPlaylistLoader_.srcUrl=srcUrlOrPlaylist,this.mainPlaylistLoader_.sidxMapping_={}):this.childPlaylist_=srcUrlOrPlaylist}requestErrored_(err,request,startingState){return!this.request||(this.request=null,err?(this.error="object"!=typeof err||err instanceof Error?{status:request.status,message:"DASH request error at URL: "+request.uri,response:request.response,code:2}:err,startingState&&(this.state=startingState),this.trigger("error"),!0):void 0)}addSidxSegments_(playlist,startingState,cb){const sidxKey=playlist.sidx&&generateSidxKey(playlist.sidx);if(!playlist.sidx||!sidxKey||this.mainPlaylistLoader_.sidxMapping_[sidxKey])return void(this.mediaRequest_=window.setTimeout((()=>cb(!1)),0));const uri=resolveManifestRedirect(playlist.sidx.resolvedUri),fin=(err,request)=>{if(this.requestErrored_(err,request,startingState))return;const sidxMapping=this.mainPlaylistLoader_.sidxMapping_;let sidx;try{sidx=parseSidx_1(toUint8(request.response).subarray(8))}catch(e){return void this.requestErrored_(e,request,startingState)}return sidxMapping[sidxKey]={sidxInfo:playlist.sidx,sidx:sidx},addSidxSegmentsToPlaylist$1(playlist,sidx,playlist.sidx.resolvedUri),cb(!0)};this.request=containerRequest(uri,this.vhs_.xhr,((err,request,container,bytes)=>{if(err)return fin(err,request);if(!container||"mp4"!==container)return fin({status:request.status,message:"Unsupported ".concat(container||"unknown"," container type for sidx segment at URL: ").concat(uri),response:"",playlist:playlist,internal:!0,playlistExclusionDuration:1/0,code:2},request);const{offset:offset,length:length}=playlist.sidx.byterange;if(bytes.length>=length+offset)return fin(err,{response:bytes.subarray(offset,offset+length),status:request.status,uri:request.uri});this.request=this.vhs_.xhr({uri:uri,responseType:"arraybuffer",headers:segmentXhrHeaders({byterange:playlist.sidx.byterange})},fin)}))}dispose(){this.trigger("dispose"),this.stopRequest(),this.loadedPlaylists_={},window.clearTimeout(this.minimumUpdatePeriodTimeout_),window.clearTimeout(this.mediaRequest_),window.clearTimeout(this.mediaUpdateTimeout),this.mediaUpdateTimeout=null,this.mediaRequest_=null,this.minimumUpdatePeriodTimeout_=null,this.mainPlaylistLoader_.createMupOnMedia_&&(this.off("loadedmetadata",this.mainPlaylistLoader_.createMupOnMedia_),this.mainPlaylistLoader_.createMupOnMedia_=null),this.off()}hasPendingRequest(){return this.request||this.mediaRequest_}stopRequest(){if(this.request){const oldRequest=this.request;this.request=null,oldRequest.onreadystatechange=null,oldRequest.abort()}}media(playlist){if(!playlist)return this.media_;if("HAVE_NOTHING"===this.state)throw new Error("Cannot switch media playlist from "+this.state);const startingState=this.state;if("string"==typeof playlist){if(!this.mainPlaylistLoader_.main.playlists[playlist])throw new Error("Unknown playlist URI: "+playlist);playlist=this.mainPlaylistLoader_.main.playlists[playlist]}const mediaChange=!this.media_||playlist.id!==this.media_.id;if(mediaChange&&this.loadedPlaylists_[playlist.id]&&this.loadedPlaylists_[playlist.id].endList)return this.state="HAVE_METADATA",this.media_=playlist,void(mediaChange&&(this.trigger("mediachanging"),this.trigger("mediachange")));mediaChange&&(this.media_&&this.trigger("mediachanging"),this.addSidxSegments_(playlist,startingState,(sidxChanged=>{this.haveMetadata({startingState:startingState,playlist:playlist})})))}haveMetadata(_ref42){let{startingState:startingState,playlist:playlist}=_ref42;this.state="HAVE_METADATA",this.loadedPlaylists_[playlist.id]=playlist,this.mediaRequest_=null,this.refreshMedia_(playlist.id),"HAVE_MAIN_MANIFEST"===startingState?this.trigger("loadedmetadata"):this.trigger("mediachange")}pause(){this.mainPlaylistLoader_.createMupOnMedia_&&(this.off("loadedmetadata",this.mainPlaylistLoader_.createMupOnMedia_),this.mainPlaylistLoader_.createMupOnMedia_=null),this.stopRequest(),window.clearTimeout(this.mediaUpdateTimeout),this.mediaUpdateTimeout=null,this.isMain_&&(window.clearTimeout(this.mainPlaylistLoader_.minimumUpdatePeriodTimeout_),this.mainPlaylistLoader_.minimumUpdatePeriodTimeout_=null),"HAVE_NOTHING"===this.state&&(this.started=!1)}load(isFinalRendition){window.clearTimeout(this.mediaUpdateTimeout),this.mediaUpdateTimeout=null;const media=this.media();if(isFinalRendition){const delay=media?media.targetDuration/2*1e3:5e3;this.mediaUpdateTimeout=window.setTimeout((()=>this.load()),delay)}else this.started?media&&!media.endList?(this.isMain_&&!this.minimumUpdatePeriodTimeout_&&(this.trigger("minimumUpdatePeriod"),this.updateMinimumUpdatePeriodTimeout_()),this.trigger("mediaupdatetimeout")):this.trigger("loadedplaylist"):this.start()}start(){this.started=!0,this.isMain_?this.requestMain_(((req,mainChanged)=>{this.haveMain_(),this.hasPendingRequest()||this.media_||this.media(this.mainPlaylistLoader_.main.playlists[0])})):this.mediaRequest_=window.setTimeout((()=>this.haveMain_()),0)}requestMain_(cb){this.request=this.vhs_.xhr({uri:this.mainPlaylistLoader_.srcUrl,withCredentials:this.withCredentials},((error,req)=>{if(this.requestErrored_(error,req))return void("HAVE_NOTHING"===this.state&&(this.started=!1));const mainChanged=req.responseText!==this.mainPlaylistLoader_.mainXml_;return this.mainPlaylistLoader_.mainXml_=req.responseText,req.responseHeaders&&req.responseHeaders.date?this.mainLoaded_=Date.parse(req.responseHeaders.date):this.mainLoaded_=Date.now(),this.mainPlaylistLoader_.srcUrl=resolveManifestRedirect(this.mainPlaylistLoader_.srcUrl,req),mainChanged?(this.handleMain_(),void this.syncClientServerClock_((()=>cb(req,mainChanged)))):cb(req,mainChanged)}))}syncClientServerClock_(done){const utcTiming=parseUTCTiming(this.mainPlaylistLoader_.mainXml_);return null===utcTiming?(this.mainPlaylistLoader_.clientOffset_=this.mainLoaded_-Date.now(),done()):"DIRECT"===utcTiming.method?(this.mainPlaylistLoader_.clientOffset_=utcTiming.value-Date.now(),done()):void(this.request=this.vhs_.xhr({uri:resolveUrl(this.mainPlaylistLoader_.srcUrl,utcTiming.value),method:utcTiming.method,withCredentials:this.withCredentials},((error,req)=>{if(!this.request)return;if(error)return this.mainPlaylistLoader_.clientOffset_=this.mainLoaded_-Date.now(),done();let serverTime;serverTime="HEAD"===utcTiming.method?req.responseHeaders&&req.responseHeaders.date?Date.parse(req.responseHeaders.date):this.mainLoaded_:Date.parse(req.responseText),this.mainPlaylistLoader_.clientOffset_=serverTime-Date.now(),done()})))}haveMain_(){this.state="HAVE_MAIN_MANIFEST",this.isMain_?this.trigger("loadedplaylist"):this.media_||this.media(this.childPlaylist_)}handleMain_(){this.mediaRequest_=null;const oldMain=this.mainPlaylistLoader_.main;let newMain=parseMainXml({mainXml:this.mainPlaylistLoader_.mainXml_,srcUrl:this.mainPlaylistLoader_.srcUrl,clientOffset:this.mainPlaylistLoader_.clientOffset_,sidxMapping:this.mainPlaylistLoader_.sidxMapping_,previousManifest:oldMain});oldMain&&(newMain=updateMain(oldMain,newMain,this.mainPlaylistLoader_.sidxMapping_)),this.mainPlaylistLoader_.main=newMain||oldMain;const location=this.mainPlaylistLoader_.main.locations&&this.mainPlaylistLoader_.main.locations[0];return location&&location!==this.mainPlaylistLoader_.srcUrl&&(this.mainPlaylistLoader_.srcUrl=location),(!oldMain||newMain&&newMain.minimumUpdatePeriod!==oldMain.minimumUpdatePeriod)&&this.updateMinimumUpdatePeriodTimeout_(),this.addEventStreamToMetadataTrack_(newMain),Boolean(newMain)}updateMinimumUpdatePeriodTimeout_(){const mpl=this.mainPlaylistLoader_;mpl.createMupOnMedia_&&(mpl.off("loadedmetadata",mpl.createMupOnMedia_),mpl.createMupOnMedia_=null),mpl.minimumUpdatePeriodTimeout_&&(window.clearTimeout(mpl.minimumUpdatePeriodTimeout_),mpl.minimumUpdatePeriodTimeout_=null);let mup=mpl.main&&mpl.main.minimumUpdatePeriod;0===mup&&(mpl.media()?mup=1e3*mpl.media().targetDuration:(mpl.createMupOnMedia_=mpl.updateMinimumUpdatePeriodTimeout_,mpl.one("loadedmetadata",mpl.createMupOnMedia_))),"number"!=typeof mup||mup<=0?mup<0&&this.logger_("found invalid minimumUpdatePeriod of ".concat(mup,", not setting a timeout")):this.createMUPTimeout_(mup)}createMUPTimeout_(mup){const mpl=this.mainPlaylistLoader_;mpl.minimumUpdatePeriodTimeout_=window.setTimeout((()=>{mpl.minimumUpdatePeriodTimeout_=null,mpl.trigger("minimumUpdatePeriod"),mpl.createMUPTimeout_(mup)}),mup)}refreshXml_(){this.requestMain_(((req,mainChanged)=>{mainChanged&&(this.media_&&(this.media_=this.mainPlaylistLoader_.main.playlists[this.media_.id]),this.mainPlaylistLoader_.sidxMapping_=((main,oldSidxMapping)=>{let mediaGroupSidx=compareSidxEntry(main.playlists,oldSidxMapping);return forEachMediaGroup(main,((properties,mediaType,groupKey,labelKey)=>{if(properties.playlists&&properties.playlists.length){const playlists=properties.playlists;mediaGroupSidx=merge(mediaGroupSidx,compareSidxEntry(playlists,oldSidxMapping))}})),mediaGroupSidx})(this.mainPlaylistLoader_.main,this.mainPlaylistLoader_.sidxMapping_),this.addSidxSegments_(this.media(),this.state,(sidxChanged=>{this.refreshMedia_(this.media().id)})))}))}refreshMedia_(mediaID){if(!mediaID)throw new Error("refreshMedia_ must take a media id");this.media_&&this.isMain_&&this.handleMain_();const playlists=this.mainPlaylistLoader_.main.playlists,mediaChanged=!this.media_||this.media_!==playlists[mediaID];if(mediaChanged?this.media_=playlists[mediaID]:this.trigger("playlistunchanged"),!this.mediaUpdateTimeout){const createMediaUpdateTimeout=()=>{this.media().endList||(this.mediaUpdateTimeout=window.setTimeout((()=>{this.trigger("mediaupdatetimeout"),createMediaUpdateTimeout()}),refreshDelay(this.media(),Boolean(mediaChanged))))};createMediaUpdateTimeout()}this.trigger("loadedplaylist")}addEventStreamToMetadataTrack_(newMain){if(newMain&&this.mainPlaylistLoader_.main.eventStream){const metadataArray=this.mainPlaylistLoader_.main.eventStream.map((eventStreamNode=>({cueTime:eventStreamNode.start,frames:[{data:eventStreamNode.messageData}]})));this.addMetadataToTextTrack("EventStream",metadataArray,this.mainPlaylistLoader_.main.duration)}}getKeyIdSet(playlist){if(playlist.contentProtection){const keyIds=new Set;for(const keysystem in playlist.contentProtection){const defaultKID=playlist.contentProtection[keysystem].attributes["cenc:default_KID"];defaultKID&&keyIds.add(defaultKID.replace(/-/g,"").toLowerCase())}return keyIds}}}var Config={GOAL_BUFFER_LENGTH:30,MAX_GOAL_BUFFER_LENGTH:60,BACK_BUFFER_LENGTH:30,GOAL_BUFFER_LENGTH_RATE:1,INITIAL_BANDWIDTH:4194304,BANDWIDTH_VARIANCE:1.2,BUFFER_LOW_WATER_LINE:0,MAX_BUFFER_LOW_WATER_LINE:30,EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE:16,BUFFER_LOW_WATER_LINE_RATE:1,BUFFER_HIGH_WATER_LINE:30};const browserWorkerPolyFill=function(workerObj){return workerObj.on=workerObj.addEventListener,workerObj.off=workerObj.removeEventListener,workerObj},factory=function(code){return function(){const objectUrl=function(str){try{return URL.createObjectURL(new Blob([str],{type:"application/javascript"}))}catch(e){const blob=new BlobBuilder;return blob.append(str),URL.createObjectURL(blob.getBlob())}}(code),worker=browserWorkerPolyFill(new Worker(objectUrl));worker.objURL=objectUrl;const terminate=worker.terminate;return worker.on=worker.addEventListener,worker.off=worker.removeEventListener,worker.terminate=function(){return URL.revokeObjectURL(objectUrl),terminate.call(this)},worker}},transform=function(code){return"var browserWorkerPolyFill = ".concat(browserWorkerPolyFill.toString(),";\n")+"browserWorkerPolyFill(self);\n"+code},getWorkerString=function(fn){return fn.toString().replace(/^function.+?{/,"").slice(0,-1)},workerCode$1=transform(getWorkerString((function(){var commonjsGlobal="undefined"!=typeof globalThis?globalThis:"undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:{},Stream$8=function(){this.init=function(){var listeners={};this.on=function(type,listener){listeners[type]||(listeners[type]=[]),listeners[type]=listeners[type].concat(listener)},this.off=function(type,listener){var 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this.on("data",(function(data){destination.push(data)})),this.on("done",(function(flushSource){destination.flush(flushSource)})),this.on("partialdone",(function(flushSource){destination.partialFlush(flushSource)})),this.on("endedtimeline",(function(flushSource){destination.endTimeline(flushSource)})),this.on("reset",(function(flushSource){destination.reset(flushSource)})),destination},Stream$8.prototype.push=function(data){this.trigger("data",data)},Stream$8.prototype.flush=function(flushSource){this.trigger("done",flushSource)},Stream$8.prototype.partialFlush=function(flushSource){this.trigger("partialdone",flushSource)},Stream$8.prototype.endTimeline=function(flushSource){this.trigger("endedtimeline",flushSource)},Stream$8.prototype.reset=function(flushSource){this.trigger("reset",flushSource)};var box,dinf,esds,ftyp,mfhd,minf,moof,moov,mvex,mvhd,trak,tkhd,mdia,mdhd,hdlr,sdtp,stbl,stsd,traf,trex,trun$1,types,MAJOR_BRAND,MINOR_VERSION,AVC1_BRAND,VIDEO_HDLR,AUDIO_HDLR,HDLR_TYPES,VMHD,SMHD,DREF,STCO,STSC,STSZ,STTS,videoSample,audioSample,audioTrun,videoTrun,trunHeader,stream=Stream$8,MAX_UINT32$1=Math.pow(2,32),numbers={getUint64:function(uint8){var value,dv=new DataView(uint8.buffer,uint8.byteOffset,uint8.byteLength);return dv.getBigUint64?(value=dv.getBigUint64(0))<Number.MAX_SAFE_INTEGER?Number(value):value:dv.getUint32(0)*MAX_UINT32$1+dv.getUint32(4)},MAX_UINT32:MAX_UINT32$1},MAX_UINT32=numbers.MAX_UINT32;!function(){var i;if(types={avc1:[],avcC:[],btrt:[],dinf:[],dref:[],esds:[],ftyp:[],hdlr:[],mdat:[],mdhd:[],mdia:[],mfhd:[],minf:[],moof:[],moov:[],mp4a:[],mvex:[],mvhd:[],pasp:[],sdtp:[],smhd:[],stbl:[],stco:[],stsc:[],stsd:[],stsz:[],stts:[],styp:[],tfdt:[],tfhd:[],traf:[],trak:[],trun:[],trex:[],tkhd:[],vmhd:[]},"undefined"!=typeof Uint8Array){for(i in types)types.hasOwnProperty(i)&&(types[i]=[i.charCodeAt(0),i.charCodeAt(1),i.charCodeAt(2),i.charCodeAt(3)]);MAJOR_BRAND=new Uint8Array(["i".charCodeAt(0),"s".charCodeAt(0),"o".charCodeAt(0),"m".charCodeAt(0)]),AVC1_BRAND=new Uint8Array(["a".charCodeAt(0),"v".charCodeAt(0),"c".charCodeAt(0),"1".charCodeAt(0)]),MINOR_VERSION=new Uint8Array([0,0,0,1]),VIDEO_HDLR=new Uint8Array([0,0,0,0,0,0,0,0,118,105,100,101,0,0,0,0,0,0,0,0,0,0,0,0,86,105,100,101,111,72,97,110,100,108,101,114,0]),AUDIO_HDLR=new Uint8Array([0,0,0,0,0,0,0,0,115,111,117,110,0,0,0,0,0,0,0,0,0,0,0,0,83,111,117,110,100,72,97,110,100,108,101,114,0]),HDLR_TYPES={video:VIDEO_HDLR,audio:AUDIO_HDLR},DREF=new Uint8Array([0,0,0,0,0,0,0,1,0,0,0,12,117,114,108,32,0,0,0,1]),SMHD=new Uint8Array([0,0,0,0,0,0,0,0]),STCO=new Uint8Array([0,0,0,0,0,0,0,0]),STSC=STCO,STSZ=new Uint8Array([0,0,0,0,0,0,0,0,0,0,0,0]),STTS=STCO,VMHD=new Uint8Array([0,0,0,1,0,0,0,0,0,0,0,0])}}(),box=function(type){var i,result,payload=[],size=0;for(i=1;i<arguments.length;i++)payload.push(arguments[i]);for(i=payload.length;i--;)size+=payload[i].byteLength;for(result=new Uint8Array(size+8),new DataView(result.buffer,result.byteOffset,result.byteLength).setUint32(0,result.byteLength),result.set(type,4),i=0,size=8;i<payload.length;i++)result.set(payload[i],size),size+=payload[i].byteLength;return result},dinf=function(){return box(types.dinf,box(types.dref,DREF))},esds=function(track){return box(types.esds,new Uint8Array([0,0,0,0,3,25,0,0,0,4,17,64,21,0,6,0,0,0,218,192,0,0,218,192,5,2,track.audioobjecttype<<3|track.samplingfrequencyindex>>>1,track.samplingfrequencyindex<<7|track.channelcount<<3,6,1,2]))},hdlr=function(type){return box(types.hdlr,HDLR_TYPES[type])},mdhd=function(track){var result=new Uint8Array([0,0,0,0,0,0,0,2,0,0,0,3,0,1,95,144,track.duration>>>24&255,track.duration>>>16&255,track.duration>>>8&255,255&track.duration,85,196,0,0]);return track.samplerate&&(result[12]=track.samplerate>>>24&255,result[13]=track.samplerate>>>16&255,result[14]=track.samplerate>>>8&255,result[15]=255&track.samplerate),box(types.mdhd,result)},mdia=function(track){return box(types.mdia,mdhd(track),hdlr(track.type),minf(track))},mfhd=function(sequenceNumber){return box(types.mfhd,new Uint8Array([0,0,0,0,(4278190080&sequenceNumber)>>24,(16711680&sequenceNumber)>>16,(65280&sequenceNumber)>>8,255&sequenceNumber]))},minf=function(track){return box(types.minf,"video"===track.type?box(types.vmhd,VMHD):box(types.smhd,SMHD),dinf(),stbl(track))},moof=function(sequenceNumber,tracks){for(var trackFragments=[],i=tracks.length;i--;)trackFragments[i]=traf(tracks[i]);return box.apply(null,[types.moof,mfhd(sequenceNumber)].concat(trackFragments))},moov=function(tracks){for(var i=tracks.length,boxes=[];i--;)boxes[i]=trak(tracks[i]);return box.apply(null,[types.moov,mvhd(4294967295)].concat(boxes).concat(mvex(tracks)))},mvex=function(tracks){for(var i=tracks.length,boxes=[];i--;)boxes[i]=trex(tracks[i]);return box.apply(null,[types.mvex].concat(boxes))},mvhd=function(duration){var bytes=new Uint8Array([0,0,0,0,0,0,0,1,0,0,0,2,0,1,95,144,(4278190080&duration)>>24,(16711680&duration)>>16,(65280&duration)>>8,255&duration,0,1,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,64,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,255,255,255,255]);return box(types.mvhd,bytes)},sdtp=function(track){var flags,i,samples=track.samples||[],bytes=new Uint8Array(4+samples.length);for(i=0;i<samples.length;i++)flags=samples[i].flags,bytes[i+4]=flags.dependsOn<<4|flags.isDependedOn<<2|flags.hasRedundancy;return box(types.sdtp,bytes)},stbl=function(track){return box(types.stbl,stsd(track),box(types.stts,STTS),box(types.stsc,STSC),box(types.stsz,STSZ),box(types.stco,STCO))},stsd=function(track){return box(types.stsd,new Uint8Array([0,0,0,0,0,0,0,1]),"video"===track.type?videoSample(track):audioSample(track))},videoSample=function(track){var i,avc1Box,sps=track.sps||[],pps=track.pps||[],sequenceParameterSets=[],pictureParameterSets=[];for(i=0;i<sps.length;i++)sequenceParameterSets.push((65280&sps[i].byteLength)>>>8),sequenceParameterSets.push(255&sps[i].byteLength),sequenceParameterSets=sequenceParameterSets.concat(Array.prototype.slice.call(sps[i]));for(i=0;i<pps.length;i++)pictureParameterSets.push((65280&pps[i].byteLength)>>>8),pictureParameterSets.push(255&pps[i].byteLength),pictureParameterSets=pictureParameterSets.concat(Array.prototype.slice.call(pps[i]));if(avc1Box=[types.avc1,new Uint8Array([0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,(65280&track.width)>>8,255&track.width,(65280&track.height)>>8,255&track.height,0,72,0,0,0,72,0,0,0,0,0,0,0,1,19,118,105,100,101,111,106,115,45,99,111,110,116,114,105,98,45,104,108,115,0,0,0,0,0,0,0,0,0,0,0,0,0,24,17,17]),box(types.avcC,new Uint8Array([1,track.profileIdc,track.profileCompatibility,track.levelIdc,255].concat([sps.length],sequenceParameterSets,[pps.length],pictureParameterSets))),box(types.btrt,new Uint8Array([0,28,156,128,0,45,198,192,0,45,198,192]))],track.sarRatio){var hSpacing=track.sarRatio[0],vSpacing=track.sarRatio[1];avc1Box.push(box(types.pasp,new Uint8Array([(4278190080&hSpacing)>>24,(16711680&hSpacing)>>16,(65280&hSpacing)>>8,255&hSpacing,(4278190080&vSpacing)>>24,(16711680&vSpacing)>>16,(65280&vSpacing)>>8,255&vSpacing])))}return box.apply(null,avc1Box)},audioSample=function(track){return box(types.mp4a,new Uint8Array([0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,(65280&track.channelcount)>>8,255&track.channelcount,(65280&track.samplesize)>>8,255&track.samplesize,0,0,0,0,(65280&track.samplerate)>>8,255&track.samplerate,0,0]),esds(track))},tkhd=function(track){var result=new Uint8Array([0,0,0,7,0,0,0,0,0,0,0,0,(4278190080&track.id)>>24,(16711680&track.id)>>16,(65280&track.id)>>8,255&track.id,0,0,0,0,(4278190080&track.duration)>>24,(16711680&track.duration)>>16,(65280&track.duration)>>8,255&track.duration,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,64,0,0,0,(65280&track.width)>>8,255&track.width,0,0,(65280&track.height)>>8,255&track.height,0,0]);return box(types.tkhd,result)},traf=function(track){var trackFragmentHeader,trackFragmentDecodeTime,trackFragmentRun,sampleDependencyTable,upperWordBaseMediaDecodeTime,lowerWordBaseMediaDecodeTime;return trackFragmentHeader=box(types.tfhd,new Uint8Array([0,0,0,58,(4278190080&track.id)>>24,(16711680&track.id)>>16,(65280&track.id)>>8,255&track.id,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0])),upperWordBaseMediaDecodeTime=Math.floor(track.baseMediaDecodeTime/MAX_UINT32),lowerWordBaseMediaDecodeTime=Math.floor(track.baseMediaDecodeTime%MAX_UINT32),trackFragmentDecodeTime=box(types.tfdt,new Uint8Array([1,0,0,0,upperWordBaseMediaDecodeTime>>>24&255,upperWordBaseMediaDecodeTime>>>16&255,upperWordBaseMediaDecodeTime>>>8&255,255&upperWordBaseMediaDecodeTime,lowerWordBaseMediaDecodeTime>>>24&255,lowerWordBaseMediaDecodeTime>>>16&255,lowerWordBaseMediaDecodeTime>>>8&255,255&lowerWordBaseMediaDecodeTime])),92,"audio"===track.type?(trackFragmentRun=trun$1(track,92),box(types.traf,trackFragmentHeader,trackFragmentDecodeTime,trackFragmentRun)):(sampleDependencyTable=sdtp(track),trackFragmentRun=trun$1(track,sampleDependencyTable.length+92),box(types.traf,trackFragmentHeader,trackFragmentDecodeTime,trackFragmentRun,sampleDependencyTable))},trak=function(track){return track.duration=track.duration||4294967295,box(types.trak,tkhd(track),mdia(track))},trex=function(track){var result=new Uint8Array([0,0,0,0,(4278190080&track.id)>>24,(16711680&track.id)>>16,(65280&track.id)>>8,255&track.id,0,0,0,1,0,0,0,0,0,0,0,0,0,1,0,1]);return"video"!==track.type&&(result[result.length-1]=0),box(types.trex,result)},trunHeader=function(samples,offset){var durationPresent=0,sizePresent=0,flagsPresent=0,compositionTimeOffset=0;return samples.length&&(void 0!==samples[0].duration&&(durationPresent=1),void 0!==samples[0].size&&(sizePresent=2),void 0!==samples[0].flags&&(flagsPresent=4),void 0!==samples[0].compositionTimeOffset&&(compositionTimeOffset=8)),[0,0,durationPresent|sizePresent|flagsPresent|compositionTimeOffset,1,(4278190080&samples.length)>>>24,(16711680&samples.length)>>>16,(65280&samples.length)>>>8,255&samples.length,(4278190080&offset)>>>24,(16711680&offset)>>>16,(65280&offset)>>>8,255&offset]},videoTrun=function(track,offset){var bytesOffest,bytes,header,samples,sample,i;for(offset+=20+16*(samples=track.samples||[]).length,header=trunHeader(samples,offset),(bytes=new Uint8Array(header.length+16*samples.length)).set(header),bytesOffest=header.length,i=0;i<samples.length;i++)sample=samples[i],bytes[bytesOffest++]=(4278190080&sample.duration)>>>24,bytes[bytesOffest++]=(16711680&sample.duration)>>>16,bytes[bytesOffest++]=(65280&sample.duration)>>>8,bytes[bytesOffest++]=255&sample.duration,bytes[bytesOffest++]=(4278190080&sample.size)>>>24,bytes[bytesOffest++]=(16711680&sample.size)>>>16,bytes[bytesOffest++]=(65280&sample.size)>>>8,bytes[bytesOffest++]=255&sample.size,bytes[bytesOffest++]=sample.flags.isLeading<<2|sample.flags.dependsOn,bytes[bytesOffest++]=sample.flags.isDependedOn<<6|sample.flags.hasRedundancy<<4|sample.flags.paddingValue<<1|sample.flags.isNonSyncSample,bytes[bytesOffest++]=61440&sample.flags.degradationPriority,bytes[bytesOffest++]=15&sample.flags.degradationPriority,bytes[bytesOffest++]=(4278190080&sample.compositionTimeOffset)>>>24,bytes[bytesOffest++]=(16711680&sample.compositionTimeOffset)>>>16,bytes[bytesOffest++]=(65280&sample.compositionTimeOffset)>>>8,bytes[bytesOffest++]=255&sample.compositionTimeOffset;return box(types.trun,bytes)},audioTrun=function(track,offset){var bytes,bytesOffest,header,samples,sample,i;for(offset+=20+8*(samples=track.samples||[]).length,header=trunHeader(samples,offset),(bytes=new Uint8Array(header.length+8*samples.length)).set(header),bytesOffest=header.length,i=0;i<samples.length;i++)sample=samples[i],bytes[bytesOffest++]=(4278190080&sample.duration)>>>24,bytes[bytesOffest++]=(16711680&sample.duration)>>>16,bytes[bytesOffest++]=(65280&sample.duration)>>>8,bytes[bytesOffest++]=255&sample.duration,bytes[bytesOffest++]=(4278190080&sample.size)>>>24,bytes[bytesOffest++]=(16711680&sample.size)>>>16,bytes[bytesOffest++]=(65280&sample.size)>>>8,bytes[bytesOffest++]=255&sample.size;return box(types.trun,bytes)},trun$1=function(track,offset){return"audio"===track.type?audioTrun(track,offset):videoTrun(track,offset)};var silence,secondsToVideoTs,secondsToAudioTs,videoTsToSeconds,audioTsToSeconds,audioTsToVideoTs,videoTsToAudioTs,metadataTsToSeconds,mp4Generator={ftyp:ftyp=function(){return box(types.ftyp,MAJOR_BRAND,MINOR_VERSION,MAJOR_BRAND,AVC1_BRAND)},mdat:function(data){return box(types.mdat,data)},moof:moof,moov:moov,initSegment:function(tracks){var result,fileType=ftyp(),movie=moov(tracks);return(result=new Uint8Array(fileType.byteLength+movie.byteLength)).set(fileType),result.set(movie,fileType.byteLength),result}},sampleForFrame=function(frame,dataOffset){var sample={size:0,flags:{isLeading:0,dependsOn:1,isDependedOn:0,hasRedundancy:0,degradationPriority:0,isNonSyncSample:1}};return sample.dataOffset=dataOffset,sample.compositionTimeOffset=frame.pts-frame.dts,sample.duration=frame.duration,sample.size=4*frame.length,sample.size+=frame.byteLength,frame.keyFrame&&(sample.flags.dependsOn=2,sample.flags.isNonSyncSample=0),sample},frameUtils$1={groupNalsIntoFrames:function(nalUnits){var i,currentNal,currentFrame=[],frames=[];for(frames.byteLength=0,frames.nalCount=0,frames.duration=0,currentFrame.byteLength=0,i=0;i<nalUnits.length;i++)"access_unit_delimiter_rbsp"===(currentNal=nalUnits[i]).nalUnitType?(currentFrame.length&&(currentFrame.duration=currentNal.dts-currentFrame.dts,frames.byteLength+=currentFrame.byteLength,frames.nalCount+=currentFrame.length,frames.duration+=currentFrame.duration,frames.push(currentFrame)),(currentFrame=[currentNal]).byteLength=currentNal.data.byteLength,currentFrame.pts=currentNal.pts,currentFrame.dts=currentNal.dts):("slice_layer_without_partitioning_rbsp_idr"===currentNal.nalUnitType&&(currentFrame.keyFrame=!0),currentFrame.duration=currentNal.dts-currentFrame.dts,currentFrame.byteLength+=currentNal.data.byteLength,currentFrame.push(currentNal));return frames.length&&(!currentFrame.duration||currentFrame.duration<=0)&&(currentFrame.duration=frames[frames.length-1].duration),frames.byteLength+=currentFrame.byteLength,frames.nalCount+=currentFrame.length,frames.duration+=currentFrame.duration,frames.push(currentFrame),frames},groupFramesIntoGops:function(frames){var i,currentFrame,currentGop=[],gops=[];for(currentGop.byteLength=0,currentGop.nalCount=0,currentGop.duration=0,currentGop.pts=frames[0].pts,currentGop.dts=frames[0].dts,gops.byteLength=0,gops.nalCount=0,gops.duration=0,gops.pts=frames[0].pts,gops.dts=frames[0].dts,i=0;i<frames.length;i++)(currentFrame=frames[i]).keyFrame?(currentGop.length&&(gops.push(currentGop),gops.byteLength+=currentGop.byteLength,gops.nalCount+=currentGop.nalCount,gops.duration+=currentGop.duration),(currentGop=[currentFrame]).nalCount=currentFrame.length,currentGop.byteLength=currentFrame.byteLength,currentGop.pts=currentFrame.pts,currentGop.dts=currentFrame.dts,currentGop.duration=currentFrame.duration):(currentGop.duration+=currentFrame.duration,currentGop.nalCount+=currentFrame.length,currentGop.byteLength+=currentFrame.byteLength,currentGop.push(currentFrame));return gops.length&&currentGop.duration<=0&&(currentGop.duration=gops[gops.length-1].duration),gops.byteLength+=currentGop.byteLength,gops.nalCount+=currentGop.nalCount,gops.duration+=currentGop.duration,gops.push(currentGop),gops},extendFirstKeyFrame:function(gops){var currentGop;return!gops[0][0].keyFrame&&gops.length>1&&(currentGop=gops.shift(),gops.byteLength-=currentGop.byteLength,gops.nalCount-=currentGop.nalCount,gops[0][0].dts=currentGop.dts,gops[0][0].pts=currentGop.pts,gops[0][0].duration+=currentGop.duration),gops},generateSampleTable:function(gops,baseDataOffset){var h,i,sample,currentGop,currentFrame,dataOffset=baseDataOffset||0,samples=[];for(h=0;h<gops.length;h++)for(currentGop=gops[h],i=0;i<currentGop.length;i++)currentFrame=currentGop[i],dataOffset+=(sample=sampleForFrame(currentFrame,dataOffset)).size,samples.push(sample);return samples},concatenateNalData:function(gops){var h,i,j,currentGop,currentFrame,currentNal,dataOffset=0,nalsByteLength=gops.byteLength,numberOfNals=gops.nalCount,data=new Uint8Array(nalsByteLength+4*numberOfNals),view=new DataView(data.buffer);for(h=0;h<gops.length;h++)for(currentGop=gops[h],i=0;i<currentGop.length;i++)for(currentFrame=currentGop[i],j=0;j<currentFrame.length;j++)currentNal=currentFrame[j],view.setUint32(dataOffset,currentNal.data.byteLength),dataOffset+=4,data.set(currentNal.data,dataOffset),dataOffset+=currentNal.data.byteLength;return data},generateSampleTableForFrame:function(frame,baseDataOffset){var sample,samples=[];return sample=sampleForFrame(frame,baseDataOffset||0),samples.push(sample),samples},concatenateNalDataForFrame:function(frame){var i,currentNal,dataOffset=0,nalsByteLength=frame.byteLength,numberOfNals=frame.length,data=new Uint8Array(nalsByteLength+4*numberOfNals),view=new DataView(data.buffer);for(i=0;i<frame.length;i++)currentNal=frame[i],view.setUint32(dataOffset,currentNal.data.byteLength),dataOffset+=4,data.set(currentNal.data,dataOffset),dataOffset+=currentNal.data.byteLength;return data}},highPrefix=[33,16,5,32,164,27],lowPrefix=[33,65,108,84,1,2,4,8,168,2,4,8,17,191,252],zeroFill=function(count){for(var a=[];count--;)a.push(0);return a};audioTsToVideoTs=function(timestamp,sampleRate){return secondsToVideoTs(audioTsToSeconds(timestamp,sampleRate))},videoTsToAudioTs=function(timestamp,sampleRate){return secondsToAudioTs(videoTsToSeconds(timestamp),sampleRate)},metadataTsToSeconds=function(timestamp,timelineStartPts,keepOriginalTimestamps){return videoTsToSeconds(keepOriginalTimestamps?timestamp:timestamp-timelineStartPts)};var clock$2={ONE_SECOND_IN_TS:9e4,secondsToVideoTs:secondsToVideoTs=function(seconds){return 9e4*seconds},secondsToAudioTs:secondsToAudioTs=function(seconds,sampleRate){return seconds*sampleRate},videoTsToSeconds:videoTsToSeconds=function(timestamp){return timestamp/9e4},audioTsToSeconds:audioTsToSeconds=function(timestamp,sampleRate){return timestamp/sampleRate},audioTsToVideoTs:audioTsToVideoTs,videoTsToAudioTs:videoTsToAudioTs,metadataTsToSeconds:metadataTsToSeconds},coneOfSilence=function(){if(!silence){var coneOfSilence={96e3:[highPrefix,[227,64],zeroFill(154),[56]],88200:[highPrefix,[231],zeroFill(170),[56]],64e3:[highPrefix,[248,192],zeroFill(240),[56]],48e3:[highPrefix,[255,192],zeroFill(268),[55,148,128],zeroFill(54),[112]],44100:[highPrefix,[255,192],zeroFill(268),[55,163,128],zeroFill(84),[112]],32e3:[highPrefix,[255,192],zeroFill(268),[55,234],zeroFill(226),[112]],24e3:[highPrefix,[255,192],zeroFill(268),[55,255,128],zeroFill(268),[111,112],zeroFill(126),[224]],16e3:[highPrefix,[255,192],zeroFill(268),[55,255,128],zeroFill(268),[111,255],zeroFill(269),[223,108],zeroFill(195),[1,192]],12e3:[lowPrefix,zeroFill(268),[3,127,248],zeroFill(268),[6,255,240],zeroFill(268),[13,255,224],zeroFill(268),[27,253,128],zeroFill(259),[56]],11025:[lowPrefix,zeroFill(268),[3,127,248],zeroFill(268),[6,255,240],zeroFill(268),[13,255,224],zeroFill(268),[27,255,192],zeroFill(268),[55,175,128],zeroFill(108),[112]],8e3:[lowPrefix,zeroFill(268),[3,121,16],zeroFill(47),[7]]};metaTable=coneOfSilence,silence=Object.keys(metaTable).reduce((function(obj,key){return obj[key]=new Uint8Array(metaTable[key].reduce((function(arr,part){return arr.concat(part)}),[])),obj}),{})}var metaTable;return silence},clock$1=clock$2,audioFrameUtils$1={prefixWithSilence:function(track,frames,audioAppendStartTs,videoBaseMediaDecodeTime){var baseMediaDecodeTimeTs,frameDuration,silentFrame,i,firstFrame,audioGapDuration=0,audioFillFrameCount=0,audioFillDuration=0;if(frames.length&&(baseMediaDecodeTimeTs=clock$1.audioTsToVideoTs(track.baseMediaDecodeTime,track.samplerate),frameDuration=Math.ceil(clock$1.ONE_SECOND_IN_TS/(track.samplerate/1024)),audioAppendStartTs&&videoBaseMediaDecodeTime&&(audioGapDuration=baseMediaDecodeTimeTs-Math.max(audioAppendStartTs,videoBaseMediaDecodeTime),audioFillDuration=(audioFillFrameCount=Math.floor(audioGapDuration/frameDuration))*frameDuration),!(audioFillFrameCount<1||audioFillDuration>clock$1.ONE_SECOND_IN_TS/2))){for((silentFrame=coneOfSilence()[track.samplerate])||(silentFrame=frames[0].data),i=0;i<audioFillFrameCount;i++)firstFrame=frames[0],frames.splice(0,0,{data:silentFrame,dts:firstFrame.dts-frameDuration,pts:firstFrame.pts-frameDuration});return track.baseMediaDecodeTime-=Math.floor(clock$1.videoTsToAudioTs(audioFillDuration,track.samplerate)),audioFillDuration}},trimAdtsFramesByEarliestDts:function(adtsFrames,track,earliestAllowedDts){return track.minSegmentDts>=earliestAllowedDts?adtsFrames:(track.minSegmentDts=1/0,adtsFrames.filter((function(currentFrame){return currentFrame.dts>=earliestAllowedDts&&(track.minSegmentDts=Math.min(track.minSegmentDts,currentFrame.dts),track.minSegmentPts=track.minSegmentDts,!0)})))},generateSampleTable:function(frames){var i,currentFrame,samples=[];for(i=0;i<frames.length;i++)currentFrame=frames[i],samples.push({size:currentFrame.data.byteLength,duration:1024});return samples},concatenateFrameData:function(frames){var i,currentFrame,dataOffset=0,data=new Uint8Array(function(array){var i,sum=0;for(i=0;i<array.length;i++)sum+=array[i].data.byteLength;return sum}(frames));for(i=0;i<frames.length;i++)currentFrame=frames[i],data.set(currentFrame.data,dataOffset),dataOffset+=currentFrame.data.byteLength;return data}},ONE_SECOND_IN_TS$3=clock$2.ONE_SECOND_IN_TS,trackDecodeInfo$1={clearDtsInfo:function(track){delete track.minSegmentDts,delete track.maxSegmentDts,delete track.minSegmentPts,delete track.maxSegmentPts},calculateTrackBaseMediaDecodeTime:function(track,keepOriginalTimestamps){var baseMediaDecodeTime,minSegmentDts=track.minSegmentDts;return keepOriginalTimestamps||(minSegmentDts-=track.timelineStartInfo.dts),baseMediaDecodeTime=track.timelineStartInfo.baseMediaDecodeTime,baseMediaDecodeTime+=minSegmentDts,baseMediaDecodeTime=Math.max(0,baseMediaDecodeTime),"audio"===track.type&&(baseMediaDecodeTime*=track.samplerate/ONE_SECOND_IN_TS$3,baseMediaDecodeTime=Math.floor(baseMediaDecodeTime)),baseMediaDecodeTime},collectDtsInfo:function(track,data){"number"==typeof data.pts&&(void 0===track.timelineStartInfo.pts&&(track.timelineStartInfo.pts=data.pts),void 0===track.minSegmentPts?track.minSegmentPts=data.pts:track.minSegmentPts=Math.min(track.minSegmentPts,data.pts),void 0===track.maxSegmentPts?track.maxSegmentPts=data.pts:track.maxSegmentPts=Math.max(track.maxSegmentPts,data.pts)),"number"==typeof data.dts&&(void 0===track.timelineStartInfo.dts&&(track.timelineStartInfo.dts=data.dts),void 0===track.minSegmentDts?track.minSegmentDts=data.dts:track.minSegmentDts=Math.min(track.minSegmentDts,data.dts),void 0===track.maxSegmentDts?track.maxSegmentDts=data.dts:track.maxSegmentDts=Math.max(track.maxSegmentDts,data.dts))}},captionPacketParser={parseSei:function(bytes){for(var i=0,result={payloadType:-1,payloadSize:0},payloadType=0,payloadSize=0;i<bytes.byteLength&&128!==bytes[i];){for(;255===bytes[i];)payloadType+=255,i++;for(payloadType+=bytes[i++];255===bytes[i];)payloadSize+=255,i++;if(payloadSize+=bytes[i++],!result.payload&&4===payloadType){if("GA94"===String.fromCharCode(bytes[i+3],bytes[i+4],bytes[i+5],bytes[i+6])){result.payloadType=payloadType,result.payloadSize=payloadSize,result.payload=bytes.subarray(i,i+payloadSize);break}result.payload=void 0}i+=payloadSize,payloadType=0,payloadSize=0}return result},parseUserData:function(sei){return 181!==sei.payload[0]||49!=(sei.payload[1]<<8|sei.payload[2])||"GA94"!==String.fromCharCode(sei.payload[3],sei.payload[4],sei.payload[5],sei.payload[6])||3!==sei.payload[7]?null:sei.payload.subarray(8,sei.payload.length-1)},parseCaptionPackets:function(pts,userData){var i,count,offset,data,results=[];if(!(64&userData[0]))return results;for(count=31&userData[0],i=0;i<count;i++)data={type:3&userData[(offset=3*i)+2],pts:pts},4&userData[offset+2]&&(data.ccData=userData[offset+3]<<8|userData[offset+4],results.push(data));return results},discardEmulationPreventionBytes:function(data){for(var newLength,newData,length=data.byteLength,emulationPreventionBytesPositions=[],i=1;i<length-2;)0===data[i]&&0===data[i+1]&&3===data[i+2]?(emulationPreventionBytesPositions.push(i+2),i+=2):i++;if(0===emulationPreventionBytesPositions.length)return data;newLength=length-emulationPreventionBytesPositions.length,newData=new Uint8Array(newLength);var sourceIndex=0;for(i=0;i<newLength;sourceIndex++,i++)sourceIndex===emulationPreventionBytesPositions[0]&&(sourceIndex++,emulationPreventionBytesPositions.shift()),newData[i]=data[sourceIndex];return newData},USER_DATA_REGISTERED_ITU_T_T35:4},Stream$7=stream,cea708Parser=captionPacketParser,CaptionStream$2=function(options){options=options||{},CaptionStream$2.prototype.init.call(this),this.parse708captions_="boolean"!=typeof options.parse708captions||options.parse708captions,this.captionPackets_=[],this.ccStreams_=[new Cea608Stream(0,0),new Cea608Stream(0,1),new Cea608Stream(1,0),new Cea608Stream(1,1)],this.parse708captions_&&(this.cc708Stream_=new Cea708Stream({captionServices:options.captionServices})),this.reset(),this.ccStreams_.forEach((function(cc){cc.on("data",this.trigger.bind(this,"data")),cc.on("partialdone",this.trigger.bind(this,"partialdone")),cc.on("done",this.trigger.bind(this,"done"))}),this),this.parse708captions_&&(this.cc708Stream_.on("data",this.trigger.bind(this,"data")),this.cc708Stream_.on("partialdone",this.trigger.bind(this,"partialdone")),this.cc708Stream_.on("done",this.trigger.bind(this,"done")))};CaptionStream$2.prototype=new Stream$7,CaptionStream$2.prototype.push=function(event){var sei,userData,newCaptionPackets;if("sei_rbsp"===event.nalUnitType&&(sei=cea708Parser.parseSei(event.escapedRBSP)).payload&&sei.payloadType===cea708Parser.USER_DATA_REGISTERED_ITU_T_T35&&(userData=cea708Parser.parseUserData(sei)))if(event.dts<this.latestDts_)this.ignoreNextEqualDts_=!0;else{if(event.dts===this.latestDts_&&this.ignoreNextEqualDts_)return this.numSameDts_--,void(this.numSameDts_||(this.ignoreNextEqualDts_=!1));newCaptionPackets=cea708Parser.parseCaptionPackets(event.pts,userData),this.captionPackets_=this.captionPackets_.concat(newCaptionPackets),this.latestDts_!==event.dts&&(this.numSameDts_=0),this.numSameDts_++,this.latestDts_=event.dts}},CaptionStream$2.prototype.flushCCStreams=function(flushType){this.ccStreams_.forEach((function(cc){return"flush"===flushType?cc.flush():cc.partialFlush()}),this)},CaptionStream$2.prototype.flushStream=function(flushType){this.captionPackets_.length?(this.captionPackets_.forEach((function(elem,idx){elem.presortIndex=idx})),this.captionPackets_.sort((function(a,b){return a.pts===b.pts?a.presortIndex-b.presortIndex:a.pts-b.pts})),this.captionPackets_.forEach((function(packet){packet.type<2?this.dispatchCea608Packet(packet):this.dispatchCea708Packet(packet)}),this),this.captionPackets_.length=0,this.flushCCStreams(flushType)):this.flushCCStreams(flushType)},CaptionStream$2.prototype.flush=function(){return this.flushStream("flush")},CaptionStream$2.prototype.partialFlush=function(){return this.flushStream("partialFlush")},CaptionStream$2.prototype.reset=function(){this.latestDts_=null,this.ignoreNextEqualDts_=!1,this.numSameDts_=0,this.activeCea608Channel_=[null,null],this.ccStreams_.forEach((function(ccStream){ccStream.reset()}))},CaptionStream$2.prototype.dispatchCea608Packet=function(packet){this.setsTextOrXDSActive(packet)?this.activeCea608Channel_[packet.type]=null:this.setsChannel1Active(packet)?this.activeCea608Channel_[packet.type]=0:this.setsChannel2Active(packet)&&(this.activeCea608Channel_[packet.type]=1),null!==this.activeCea608Channel_[packet.type]&&this.ccStreams_[(packet.type<<1)+this.activeCea608Channel_[packet.type]].push(packet)},CaptionStream$2.prototype.setsChannel1Active=function(packet){return 4096==(30720&packet.ccData)},CaptionStream$2.prototype.setsChannel2Active=function(packet){return 6144==(30720&packet.ccData)},CaptionStream$2.prototype.setsTextOrXDSActive=function(packet){return 256==(28928&packet.ccData)||4138==(30974&packet.ccData)||6186==(30974&packet.ccData)},CaptionStream$2.prototype.dispatchCea708Packet=function(packet){this.parse708captions_&&this.cc708Stream_.push(packet)};var CHARACTER_TRANSLATION_708={127:9834,4128:32,4129:160,4133:8230,4138:352,4140:338,4144:9608,4145:8216,4146:8217,4147:8220,4148:8221,4149:8226,4153:8482,4154:353,4156:339,4157:8480,4159:376,4214:8539,4215:8540,4216:8541,4217:8542,4218:9168,4219:9124,4220:9123,4221:9135,4222:9126,4223:9121,4256:12600},within708TextBlock=function(b){return 32<=b&&b<=127||160<=b&&b<=255},Cea708Window=function(windowNum){this.windowNum=windowNum,this.reset()};Cea708Window.prototype.reset=function(){this.clearText(),this.pendingNewLine=!1,this.winAttr={},this.penAttr={},this.penLoc={},this.penColor={},this.visible=0,this.rowLock=0,this.columnLock=0,this.priority=0,this.relativePositioning=0,this.anchorVertical=0,this.anchorHorizontal=0,this.anchorPoint=0,this.rowCount=1,this.virtualRowCount=this.rowCount+1,this.columnCount=41,this.windowStyle=0,this.penStyle=0},Cea708Window.prototype.getText=function(){return this.rows.join("\n")},Cea708Window.prototype.clearText=function(){this.rows=[""],this.rowIdx=0},Cea708Window.prototype.newLine=function(pts){for(this.rows.length>=this.virtualRowCount&&"function"==typeof this.beforeRowOverflow&&this.beforeRowOverflow(pts),this.rows.length>0&&(this.rows.push(""),this.rowIdx++);this.rows.length>this.virtualRowCount;)this.rows.shift(),this.rowIdx--},Cea708Window.prototype.isEmpty=function(){return 0===this.rows.length||1===this.rows.length&&""===this.rows[0]},Cea708Window.prototype.addText=function(text){this.rows[this.rowIdx]+=text},Cea708Window.prototype.backspace=function(){if(!this.isEmpty()){var row=this.rows[this.rowIdx];this.rows[this.rowIdx]=row.substr(0,row.length-1)}};var Cea708Service=function(serviceNum,encoding,stream){this.serviceNum=serviceNum,this.text="",this.currentWindow=new Cea708Window(-1),this.windows=[],this.stream=stream,"string"==typeof encoding&&this.createTextDecoder(encoding)};Cea708Service.prototype.init=function(pts,beforeRowOverflow){this.startPts=pts;for(var win=0;win<8;win++)this.windows[win]=new Cea708Window(win),"function"==typeof beforeRowOverflow&&(this.windows[win].beforeRowOverflow=beforeRowOverflow)},Cea708Service.prototype.setCurrentWindow=function(windowNum){this.currentWindow=this.windows[windowNum]},Cea708Service.prototype.createTextDecoder=function(encoding){if("undefined"==typeof TextDecoder)this.stream.trigger("log",{level:"warn",message:"The `encoding` option is unsupported without TextDecoder support"});else try{this.textDecoder_=new TextDecoder(encoding)}catch(error){this.stream.trigger("log",{level:"warn",message:"TextDecoder could not be created with "+encoding+" encoding. "+error})}};var Cea708Stream=function(options){options=options||{},Cea708Stream.prototype.init.call(this);var serviceProps,self=this,captionServices=options.captionServices||{},captionServiceEncodings={};Object.keys(captionServices).forEach((serviceName=>{serviceProps=captionServices[serviceName],/^SERVICE/.test(serviceName)&&(captionServiceEncodings[serviceName]=serviceProps.encoding)})),this.serviceEncodings=captionServiceEncodings,this.current708Packet=null,this.services={},this.push=function(packet){3===packet.type?(self.new708Packet(),self.add708Bytes(packet)):(null===self.current708Packet&&self.new708Packet(),self.add708Bytes(packet))}};Cea708Stream.prototype=new Stream$7,Cea708Stream.prototype.new708Packet=function(){null!==this.current708Packet&&this.push708Packet(),this.current708Packet={data:[],ptsVals:[]}},Cea708Stream.prototype.add708Bytes=function(packet){var data=packet.ccData,byte0=data>>>8,byte1=255&data;this.current708Packet.ptsVals.push(packet.pts),this.current708Packet.data.push(byte0),this.current708Packet.data.push(byte1)},Cea708Stream.prototype.push708Packet=function(){var packet708=this.current708Packet,packetData=packet708.data,serviceNum=null,blockSize=null,i=0,b=packetData[i++];for(packet708.seq=b>>6,packet708.sizeCode=63&b;i<packetData.length;i++)blockSize=31&(b=packetData[i++]),7===(serviceNum=b>>5)&&blockSize>0&&(serviceNum=b=packetData[i++]),this.pushServiceBlock(serviceNum,i,blockSize),blockSize>0&&(i+=blockSize-1)},Cea708Stream.prototype.pushServiceBlock=function(serviceNum,start,size){var b,i=start,packetData=this.current708Packet.data,service=this.services[serviceNum];for(service||(service=this.initService(serviceNum,i));i<start+size&&i<packetData.length;i++)b=packetData[i],within708TextBlock(b)?i=this.handleText(i,service):24===b?i=this.multiByteCharacter(i,service):16===b?i=this.extendedCommands(i,service):128<=b&&b<=135?i=this.setCurrentWindow(i,service):152<=b&&b<=159?i=this.defineWindow(i,service):136===b?i=this.clearWindows(i,service):140===b?i=this.deleteWindows(i,service):137===b?i=this.displayWindows(i,service):138===b?i=this.hideWindows(i,service):139===b?i=this.toggleWindows(i,service):151===b?i=this.setWindowAttributes(i,service):144===b?i=this.setPenAttributes(i,service):145===b?i=this.setPenColor(i,service):146===b?i=this.setPenLocation(i,service):143===b?service=this.reset(i,service):8===b?service.currentWindow.backspace():12===b?service.currentWindow.clearText():13===b?service.currentWindow.pendingNewLine=!0:14===b?service.currentWindow.clearText():141===b&&i++},Cea708Stream.prototype.extendedCommands=function(i,service){var b=this.current708Packet.data[++i];return within708TextBlock(b)&&(i=this.handleText(i,service,{isExtended:!0})),i},Cea708Stream.prototype.getPts=function(byteIndex){return this.current708Packet.ptsVals[Math.floor(byteIndex/2)]},Cea708Stream.prototype.initService=function(serviceNum,i){var serviceName,encoding,self=this;return(serviceName="SERVICE"+serviceNum)in this.serviceEncodings&&(encoding=this.serviceEncodings[serviceName]),this.services[serviceNum]=new Cea708Service(serviceNum,encoding,self),this.services[serviceNum].init(this.getPts(i),(function(pts){self.flushDisplayed(pts,self.services[serviceNum])})),this.services[serviceNum]},Cea708Stream.prototype.handleText=function(i,service,options){var char,charCodeArray,code,newCode,isExtended=options&&options.isExtended,isMultiByte=options&&options.isMultiByte,packetData=this.current708Packet.data,extended=isExtended?4096:0,currentByte=packetData[i],nextByte=packetData[i+1],win=service.currentWindow;if(isMultiByte?(charCodeArray=[currentByte,nextByte],i++):charCodeArray=[currentByte],service.textDecoder_&&!isExtended)char=service.textDecoder_.decode(new Uint8Array(charCodeArray));else if(isMultiByte){const unicode=charCodeArray.map((byte=>("0"+(255&byte).toString(16)).slice(-2))).join("");char=String.fromCharCode(parseInt(unicode,16))}else newCode=CHARACTER_TRANSLATION_708[code=extended|currentByte]||code,char=4096&code&&code===newCode?"":String.fromCharCode(newCode);return win.pendingNewLine&&!win.isEmpty()&&win.newLine(this.getPts(i)),win.pendingNewLine=!1,win.addText(char),i},Cea708Stream.prototype.multiByteCharacter=function(i,service){var packetData=this.current708Packet.data,firstByte=packetData[i+1],secondByte=packetData[i+2];return within708TextBlock(firstByte)&&within708TextBlock(secondByte)&&(i=this.handleText(++i,service,{isMultiByte:!0})),i},Cea708Stream.prototype.setCurrentWindow=function(i,service){var windowNum=7&this.current708Packet.data[i];return service.setCurrentWindow(windowNum),i},Cea708Stream.prototype.defineWindow=function(i,service){var packetData=this.current708Packet.data,b=packetData[i],windowNum=7&b;service.setCurrentWindow(windowNum);var win=service.currentWindow;return b=packetData[++i],win.visible=(32&b)>>5,win.rowLock=(16&b)>>4,win.columnLock=(8&b)>>3,win.priority=7&b,b=packetData[++i],win.relativePositioning=(128&b)>>7,win.anchorVertical=127&b,b=packetData[++i],win.anchorHorizontal=b,b=packetData[++i],win.anchorPoint=(240&b)>>4,win.rowCount=15&b,b=packetData[++i],win.columnCount=63&b,b=packetData[++i],win.windowStyle=(56&b)>>3,win.penStyle=7&b,win.virtualRowCount=win.rowCount+1,i},Cea708Stream.prototype.setWindowAttributes=function(i,service){var packetData=this.current708Packet.data,b=packetData[i],winAttr=service.currentWindow.winAttr;return b=packetData[++i],winAttr.fillOpacity=(192&b)>>6,winAttr.fillRed=(48&b)>>4,winAttr.fillGreen=(12&b)>>2,winAttr.fillBlue=3&b,b=packetData[++i],winAttr.borderType=(192&b)>>6,winAttr.borderRed=(48&b)>>4,winAttr.borderGreen=(12&b)>>2,winAttr.borderBlue=3&b,b=packetData[++i],winAttr.borderType+=(128&b)>>5,winAttr.wordWrap=(64&b)>>6,winAttr.printDirection=(48&b)>>4,winAttr.scrollDirection=(12&b)>>2,winAttr.justify=3&b,b=packetData[++i],winAttr.effectSpeed=(240&b)>>4,winAttr.effectDirection=(12&b)>>2,winAttr.displayEffect=3&b,i},Cea708Stream.prototype.flushDisplayed=function(pts,service){for(var displayedText=[],winId=0;winId<8;winId++)service.windows[winId].visible&&!service.windows[winId].isEmpty()&&displayedText.push(service.windows[winId].getText());service.endPts=pts,service.text=displayedText.join("\n\n"),this.pushCaption(service),service.startPts=pts},Cea708Stream.prototype.pushCaption=function(service){""!==service.text&&(this.trigger("data",{startPts:service.startPts,endPts:service.endPts,text:service.text,stream:"cc708_"+service.serviceNum}),service.text="",service.startPts=service.endPts)},Cea708Stream.prototype.displayWindows=function(i,service){var b=this.current708Packet.data[++i],pts=this.getPts(i);this.flushDisplayed(pts,service);for(var winId=0;winId<8;winId++)b&1<<winId&&(service.windows[winId].visible=1);return i},Cea708Stream.prototype.hideWindows=function(i,service){var b=this.current708Packet.data[++i],pts=this.getPts(i);this.flushDisplayed(pts,service);for(var winId=0;winId<8;winId++)b&1<<winId&&(service.windows[winId].visible=0);return i},Cea708Stream.prototype.toggleWindows=function(i,service){var b=this.current708Packet.data[++i],pts=this.getPts(i);this.flushDisplayed(pts,service);for(var winId=0;winId<8;winId++)b&1<<winId&&(service.windows[winId].visible^=1);return i},Cea708Stream.prototype.clearWindows=function(i,service){var b=this.current708Packet.data[++i],pts=this.getPts(i);this.flushDisplayed(pts,service);for(var winId=0;winId<8;winId++)b&1<<winId&&service.windows[winId].clearText();return i},Cea708Stream.prototype.deleteWindows=function(i,service){var b=this.current708Packet.data[++i],pts=this.getPts(i);this.flushDisplayed(pts,service);for(var winId=0;winId<8;winId++)b&1<<winId&&service.windows[winId].reset();return i},Cea708Stream.prototype.setPenAttributes=function(i,service){var packetData=this.current708Packet.data,b=packetData[i],penAttr=service.currentWindow.penAttr;return b=packetData[++i],penAttr.textTag=(240&b)>>4,penAttr.offset=(12&b)>>2,penAttr.penSize=3&b,b=packetData[++i],penAttr.italics=(128&b)>>7,penAttr.underline=(64&b)>>6,penAttr.edgeType=(56&b)>>3,penAttr.fontStyle=7&b,i},Cea708Stream.prototype.setPenColor=function(i,service){var packetData=this.current708Packet.data,b=packetData[i],penColor=service.currentWindow.penColor;return b=packetData[++i],penColor.fgOpacity=(192&b)>>6,penColor.fgRed=(48&b)>>4,penColor.fgGreen=(12&b)>>2,penColor.fgBlue=3&b,b=packetData[++i],penColor.bgOpacity=(192&b)>>6,penColor.bgRed=(48&b)>>4,penColor.bgGreen=(12&b)>>2,penColor.bgBlue=3&b,b=packetData[++i],penColor.edgeRed=(48&b)>>4,penColor.edgeGreen=(12&b)>>2,penColor.edgeBlue=3&b,i},Cea708Stream.prototype.setPenLocation=function(i,service){var packetData=this.current708Packet.data,b=packetData[i],penLoc=service.currentWindow.penLoc;return service.currentWindow.pendingNewLine=!0,b=packetData[++i],penLoc.row=15&b,b=packetData[++i],penLoc.column=63&b,i},Cea708Stream.prototype.reset=function(i,service){var pts=this.getPts(i);return this.flushDisplayed(pts,service),this.initService(service.serviceNum,i)};var CHARACTER_TRANSLATION={42:225,92:233,94:237,95:243,96:250,123:231,124:247,125:209,126:241,127:9608,304:174,305:176,306:189,307:191,308:8482,309:162,310:163,311:9834,312:224,313:160,314:232,315:226,316:234,317:238,318:244,319:251,544:193,545:201,546:211,547:218,548:220,549:252,550:8216,551:161,552:42,553:39,554:8212,555:169,556:8480,557:8226,558:8220,559:8221,560:192,561:194,562:199,563:200,564:202,565:203,566:235,567:206,568:207,569:239,570:212,571:217,572:249,573:219,574:171,575:187,800:195,801:227,802:205,803:204,804:236,805:210,806:242,807:213,808:245,809:123,810:125,811:92,812:94,813:95,814:124,815:126,816:196,817:228,818:214,819:246,820:223,821:165,822:164,823:9474,824:197,825:229,826:216,827:248,828:9484,829:9488,830:9492,831:9496},getCharFromCode=function(code){return null===code?"":(code=CHARACTER_TRANSLATION[code]||code,String.fromCharCode(code))},ROWS=[4352,4384,4608,4640,5376,5408,5632,5664,5888,5920,4096,4864,4896,5120,5152],createDisplayBuffer=function(){for(var result=[],i=15;i--;)result.push({text:"",indent:0,offset:0});return result},Cea608Stream=function(field,dataChannel){Cea608Stream.prototype.init.call(this),this.field_=field||0,this.dataChannel_=dataChannel||0,this.name_="CC"+(1+(this.field_<<1|this.dataChannel_)),this.setConstants(),this.reset(),this.push=function(packet){var data,swap,char0,char1,text;if((data=32639&packet.ccData)!==this.lastControlCode_){if(4096==(61440&data)?this.lastControlCode_=data:data!==this.PADDING_&&(this.lastControlCode_=null),char0=data>>>8,char1=255&data,data!==this.PADDING_)if(data===this.RESUME_CAPTION_LOADING_)this.mode_="popOn";else if(data===this.END_OF_CAPTION_)this.mode_="popOn",this.clearFormatting(packet.pts),this.flushDisplayed(packet.pts),swap=this.displayed_,this.displayed_=this.nonDisplayed_,this.nonDisplayed_=swap,this.startPts_=packet.pts;else if(data===this.ROLL_UP_2_ROWS_)this.rollUpRows_=2,this.setRollUp(packet.pts);else if(data===this.ROLL_UP_3_ROWS_)this.rollUpRows_=3,this.setRollUp(packet.pts);else if(data===this.ROLL_UP_4_ROWS_)this.rollUpRows_=4,this.setRollUp(packet.pts);else if(data===this.CARRIAGE_RETURN_)this.clearFormatting(packet.pts),this.flushDisplayed(packet.pts),this.shiftRowsUp_(),this.startPts_=packet.pts;else if(data===this.BACKSPACE_)"popOn"===this.mode_?this.nonDisplayed_[this.row_].text=this.nonDisplayed_[this.row_].text.slice(0,-1):this.displayed_[this.row_].text=this.displayed_[this.row_].text.slice(0,-1);else if(data===this.ERASE_DISPLAYED_MEMORY_)this.flushDisplayed(packet.pts),this.displayed_=createDisplayBuffer();else if(data===this.ERASE_NON_DISPLAYED_MEMORY_)this.nonDisplayed_=createDisplayBuffer();else if(data===this.RESUME_DIRECT_CAPTIONING_)"paintOn"!==this.mode_&&(this.flushDisplayed(packet.pts),this.displayed_=createDisplayBuffer()),this.mode_="paintOn",this.startPts_=packet.pts;else if(this.isSpecialCharacter(char0,char1))text=getCharFromCode((char0=(3&char0)<<8)|char1),this[this.mode_](packet.pts,text),this.column_++;else if(this.isExtCharacter(char0,char1))"popOn"===this.mode_?this.nonDisplayed_[this.row_].text=this.nonDisplayed_[this.row_].text.slice(0,-1):this.displayed_[this.row_].text=this.displayed_[this.row_].text.slice(0,-1),text=getCharFromCode((char0=(3&char0)<<8)|char1),this[this.mode_](packet.pts,text),this.column_++;else if(this.isMidRowCode(char0,char1))this.clearFormatting(packet.pts),this[this.mode_](packet.pts," "),this.column_++,14==(14&char1)&&this.addFormatting(packet.pts,["i"]),1==(1&char1)&&this.addFormatting(packet.pts,["u"]);else if(this.isOffsetControlCode(char0,char1)){const offset=3&char1;this.nonDisplayed_[this.row_].offset=offset,this.column_+=offset}else if(this.isPAC(char0,char1)){var row=ROWS.indexOf(7968&data);if("rollUp"===this.mode_&&(row-this.rollUpRows_+1<0&&(row=this.rollUpRows_-1),this.setRollUp(packet.pts,row)),row!==this.row_&&(this.clearFormatting(packet.pts),this.row_=row),1&char1&&-1===this.formatting_.indexOf("u")&&this.addFormatting(packet.pts,["u"]),16==(16&data)){const indentations=(14&data)>>1;this.column_=4*indentations,this.nonDisplayed_[this.row_].indent+=indentations}this.isColorPAC(char1)&&14==(14&char1)&&this.addFormatting(packet.pts,["i"])}else this.isNormalChar(char0)&&(0===char1&&(char1=null),text=getCharFromCode(char0),text+=getCharFromCode(char1),this[this.mode_](packet.pts,text),this.column_+=text.length)}else this.lastControlCode_=null}};Cea608Stream.prototype=new Stream$7,Cea608Stream.prototype.flushDisplayed=function(pts){const logWarning=index=>{this.trigger("log",{level:"warn",message:"Skipping a malformed 608 caption at index "+index+"."})},content=[];this.displayed_.forEach(((row,i)=>{if(row&&row.text&&row.text.length){try{row.text=row.text.trim()}catch(e){logWarning(i)}row.text.length&&content.push({text:row.text,line:i+1,position:10+Math.min(70,10*row.indent)+2.5*row.offset})}else null==row&&logWarning(i)})),content.length&&this.trigger("data",{startPts:this.startPts_,endPts:pts,content:content,stream:this.name_})},Cea608Stream.prototype.reset=function(){this.mode_="popOn",this.topRow_=0,this.startPts_=0,this.displayed_=createDisplayBuffer(),this.nonDisplayed_=createDisplayBuffer(),this.lastControlCode_=null,this.column_=0,this.row_=14,this.rollUpRows_=2,this.formatting_=[]},Cea608Stream.prototype.setConstants=function(){0===this.dataChannel_?(this.BASE_=16,this.EXT_=17,this.CONTROL_=(20|this.field_)<<8,this.OFFSET_=23):1===this.dataChannel_&&(this.BASE_=24,this.EXT_=25,this.CONTROL_=(28|this.field_)<<8,this.OFFSET_=31),this.PADDING_=0,this.RESUME_CAPTION_LOADING_=32|this.CONTROL_,this.END_OF_CAPTION_=47|this.CONTROL_,this.ROLL_UP_2_ROWS_=37|this.CONTROL_,this.ROLL_UP_3_ROWS_=38|this.CONTROL_,this.ROLL_UP_4_ROWS_=39|this.CONTROL_,this.CARRIAGE_RETURN_=45|this.CONTROL_,this.RESUME_DIRECT_CAPTIONING_=41|this.CONTROL_,this.BACKSPACE_=33|this.CONTROL_,this.ERASE_DISPLAYED_MEMORY_=44|this.CONTROL_,this.ERASE_NON_DISPLAYED_MEMORY_=46|this.CONTROL_},Cea608Stream.prototype.isSpecialCharacter=function(char0,char1){return char0===this.EXT_&&char1>=48&&char1<=63},Cea608Stream.prototype.isExtCharacter=function(char0,char1){return(char0===this.EXT_+1||char0===this.EXT_+2)&&char1>=32&&char1<=63},Cea608Stream.prototype.isMidRowCode=function(char0,char1){return char0===this.EXT_&&char1>=32&&char1<=47},Cea608Stream.prototype.isOffsetControlCode=function(char0,char1){return char0===this.OFFSET_&&char1>=33&&char1<=35},Cea608Stream.prototype.isPAC=function(char0,char1){return char0>=this.BASE_&&char0<this.BASE_+8&&char1>=64&&char1<=127},Cea608Stream.prototype.isColorPAC=function(char1){return char1>=64&&char1<=79||char1>=96&&char1<=127},Cea608Stream.prototype.isNormalChar=function(char){return char>=32&&char<=127},Cea608Stream.prototype.setRollUp=function(pts,newBaseRow){if("rollUp"!==this.mode_&&(this.row_=14,this.mode_="rollUp",this.flushDisplayed(pts),this.nonDisplayed_=createDisplayBuffer(),this.displayed_=createDisplayBuffer()),void 0!==newBaseRow&&newBaseRow!==this.row_)for(var i=0;i<this.rollUpRows_;i++)this.displayed_[newBaseRow-i]=this.displayed_[this.row_-i],this.displayed_[this.row_-i]={text:"",indent:0,offset:0};void 0===newBaseRow&&(newBaseRow=this.row_),this.topRow_=newBaseRow-this.rollUpRows_+1},Cea608Stream.prototype.addFormatting=function(pts,format){this.formatting_=this.formatting_.concat(format);var text=format.reduce((function(text,format){return text+"<"+format+">"}),"");this[this.mode_](pts,text)},Cea608Stream.prototype.clearFormatting=function(pts){if(this.formatting_.length){var text=this.formatting_.reverse().reduce((function(text,format){return text+"</"+format+">"}),"");this.formatting_=[],this[this.mode_](pts,text)}},Cea608Stream.prototype.popOn=function(pts,text){var baseRow=this.nonDisplayed_[this.row_].text;baseRow+=text,this.nonDisplayed_[this.row_].text=baseRow},Cea608Stream.prototype.rollUp=function(pts,text){var baseRow=this.displayed_[this.row_].text;baseRow+=text,this.displayed_[this.row_].text=baseRow},Cea608Stream.prototype.shiftRowsUp_=function(){var i;for(i=0;i<this.topRow_;i++)this.displayed_[i]={text:"",indent:0,offset:0};for(i=this.row_+1;i<15;i++)this.displayed_[i]={text:"",indent:0,offset:0};for(i=this.topRow_;i<this.row_;i++)this.displayed_[i]=this.displayed_[i+1];this.displayed_[this.row_]={text:"",indent:0,offset:0}},Cea608Stream.prototype.paintOn=function(pts,text){var baseRow=this.displayed_[this.row_].text;baseRow+=text,this.displayed_[this.row_].text=baseRow};var captionStream={CaptionStream:CaptionStream$2,Cea608Stream:Cea608Stream,Cea708Stream:Cea708Stream},streamTypes={H264_STREAM_TYPE:27,ADTS_STREAM_TYPE:15,METADATA_STREAM_TYPE:21},Stream$6=stream,handleRollover$1=function(value,reference){var direction=1;for(value>reference&&(direction=-1);Math.abs(reference-value)>4294967296;)value+=8589934592*direction;return value},TimestampRolloverStream$1=function(type){var lastDTS,referenceDTS;TimestampRolloverStream$1.prototype.init.call(this),this.type_=type||"shared",this.push=function(data){"metadata"!==data.type?"shared"!==this.type_&&data.type!==this.type_||(void 0===referenceDTS&&(referenceDTS=data.dts),data.dts=handleRollover$1(data.dts,referenceDTS),data.pts=handleRollover$1(data.pts,referenceDTS),lastDTS=data.dts,this.trigger("data",data)):this.trigger("data",data)},this.flush=function(){referenceDTS=lastDTS,this.trigger("done")},this.endTimeline=function(){this.flush(),this.trigger("endedtimeline")},this.discontinuity=function(){referenceDTS=void 0,lastDTS=void 0},this.reset=function(){this.discontinuity(),this.trigger("reset")}};TimestampRolloverStream$1.prototype=new Stream$6;var MetadataStream,timestampRolloverStream={TimestampRolloverStream:TimestampRolloverStream$1,handleRollover:handleRollover$1},typedArray_typedArrayIndexOf=(typedArray,element,fromIndex)=>{if(!typedArray)return-1;for(var currentIndex=fromIndex;currentIndex<typedArray.length;currentIndex++)if(typedArray[currentIndex]===element)return currentIndex;return-1},typedArrayIndexOf=typedArray_typedArrayIndexOf,textEncodingDescriptionByte_Utf8=3,percentEncode$1=function(bytes,start,end){var i,result="";for(i=start;i<end;i++)result+="%"+("00"+bytes[i].toString(16)).slice(-2);return result},parseUtf8=function(bytes,start,end){return decodeURIComponent(percentEncode$1(bytes,start,end))},parseIso88591$1=function(bytes,start,end){return unescape(percentEncode$1(bytes,start,end))},parseSyncSafeInteger$1=function(data){return data[0]<<21|data[1]<<14|data[2]<<7|data[3]},frameParsers={APIC:function(frame){var mimeTypeEndIndex,descriptionEndIndex,i=1;frame.data[0]===textEncodingDescriptionByte_Utf8&&((mimeTypeEndIndex=typedArrayIndexOf(frame.data,0,i))<0||(frame.mimeType=parseIso88591$1(frame.data,i,mimeTypeEndIndex),i=mimeTypeEndIndex+1,frame.pictureType=frame.data[i],i++,(descriptionEndIndex=typedArrayIndexOf(frame.data,0,i))<0||(frame.description=parseUtf8(frame.data,i,descriptionEndIndex),i=descriptionEndIndex+1,"--\x3e"===frame.mimeType?frame.url=parseIso88591$1(frame.data,i,frame.data.length):frame.pictureData=frame.data.subarray(i,frame.data.length))))},"T*":function(frame){frame.data[0]===textEncodingDescriptionByte_Utf8&&(frame.value=parseUtf8(frame.data,1,frame.data.length).replace(/\0*$/,""),frame.values=frame.value.split("\0"))},TXXX:function(frame){var descriptionEndIndex;frame.data[0]===textEncodingDescriptionByte_Utf8&&-1!==(descriptionEndIndex=typedArrayIndexOf(frame.data,0,1))&&(frame.description=parseUtf8(frame.data,1,descriptionEndIndex),frame.value=parseUtf8(frame.data,descriptionEndIndex+1,frame.data.length).replace(/\0*$/,""),frame.data=frame.value)},"W*":function(frame){frame.url=parseIso88591$1(frame.data,0,frame.data.length).replace(/\0.*$/,"")},WXXX:function(frame){var descriptionEndIndex;frame.data[0]===textEncodingDescriptionByte_Utf8&&-1!==(descriptionEndIndex=typedArrayIndexOf(frame.data,0,1))&&(frame.description=parseUtf8(frame.data,1,descriptionEndIndex),frame.url=parseIso88591$1(frame.data,descriptionEndIndex+1,frame.data.length).replace(/\0.*$/,""))},PRIV:function(frame){var i;for(i=0;i<frame.data.length;i++)if(0===frame.data[i]){frame.owner=parseIso88591$1(frame.data,0,i);break}frame.privateData=frame.data.subarray(i+1),frame.data=frame.privateData}},parseId3={parseId3Frames:function(data){var frameSize,frameStart=10,tagSize=0,frames=[];if(!(data.length<10||data[0]!=="I".charCodeAt(0)||data[1]!=="D".charCodeAt(0)||data[2]!=="3".charCodeAt(0))){tagSize=parseSyncSafeInteger$1(data.subarray(6,10)),tagSize+=10,64&data[5]&&(frameStart+=4,frameStart+=parseSyncSafeInteger$1(data.subarray(10,14)),tagSize-=parseSyncSafeInteger$1(data.subarray(16,20)));do{if((frameSize=parseSyncSafeInteger$1(data.subarray(frameStart+4,frameStart+8)))<1)break;var frame={id:String.fromCharCode(data[frameStart],data[frameStart+1],data[frameStart+2],data[frameStart+3]),data:data.subarray(frameStart+10,frameStart+frameSize+10)};frame.key=frame.id,frameParsers[frame.id]?frameParsers[frame.id](frame):"T"===frame.id[0]?frameParsers["T*"](frame):"W"===frame.id[0]&&frameParsers["W*"](frame),frames.push(frame),frameStart+=10,frameStart+=frameSize}while(frameStart<tagSize);return frames}},parseSyncSafeInteger:parseSyncSafeInteger$1,frameParsers:frameParsers},StreamTypes$3=streamTypes,id3=parseId3;(MetadataStream=function(options){var i,settings={descriptor:options&&options.descriptor},tagSize=0,buffer=[],bufferSize=0;if(MetadataStream.prototype.init.call(this),this.dispatchType=StreamTypes$3.METADATA_STREAM_TYPE.toString(16),settings.descriptor)for(i=0;i<settings.descriptor.length;i++)this.dispatchType+=("00"+settings.descriptor[i].toString(16)).slice(-2);this.push=function(chunk){var tag,frameStart,frameSize,frame,i;if("timed-metadata"===chunk.type)if(chunk.dataAlignmentIndicator&&(bufferSize=0,buffer.length=0),0===buffer.length&&(chunk.data.length<10||chunk.data[0]!=="I".charCodeAt(0)||chunk.data[1]!=="D".charCodeAt(0)||chunk.data[2]!=="3".charCodeAt(0)))this.trigger("log",{level:"warn",message:"Skipping unrecognized metadata packet"});else if(buffer.push(chunk),bufferSize+=chunk.data.byteLength,1===buffer.length&&(tagSize=id3.parseSyncSafeInteger(chunk.data.subarray(6,10)),tagSize+=10),!(bufferSize<tagSize)){for(tag={data:new Uint8Array(tagSize),frames:[],pts:buffer[0].pts,dts:buffer[0].dts},i=0;i<tagSize;)tag.data.set(buffer[0].data.subarray(0,tagSize-i),i),i+=buffer[0].data.byteLength,bufferSize-=buffer[0].data.byteLength,buffer.shift();frameStart=10,64&tag.data[5]&&(frameStart+=4,frameStart+=id3.parseSyncSafeInteger(tag.data.subarray(10,14)),tagSize-=id3.parseSyncSafeInteger(tag.data.subarray(16,20)));do{if((frameSize=id3.parseSyncSafeInteger(tag.data.subarray(frameStart+4,frameStart+8)))<1){this.trigger("log",{level:"warn",message:"Malformed ID3 frame encountered. Skipping remaining metadata parsing."});break}if((frame={id:String.fromCharCode(tag.data[frameStart],tag.data[frameStart+1],tag.data[frameStart+2],tag.data[frameStart+3]),data:tag.data.subarray(frameStart+10,frameStart+frameSize+10)}).key=frame.id,id3.frameParsers[frame.id]?id3.frameParsers[frame.id](frame):"T"===frame.id[0]?id3.frameParsers["T*"](frame):"W"===frame.id[0]&&id3.frameParsers["W*"](frame),"com.apple.streaming.transportStreamTimestamp"===frame.owner){var d=frame.data,size=(1&d[3])<<30|d[4]<<22|d[5]<<14|d[6]<<6|d[7]>>>2;size*=4,size+=3&d[7],frame.timeStamp=size,void 0===tag.pts&&void 0===tag.dts&&(tag.pts=frame.timeStamp,tag.dts=frame.timeStamp),this.trigger("timestamp",frame)}tag.frames.push(frame),frameStart+=10,frameStart+=frameSize}while(frameStart<tagSize);this.trigger("data",tag)}}}).prototype=new stream;var TransportPacketStream,TransportParseStream,ElementaryStream,metadataStream=MetadataStream,Stream$4=stream,CaptionStream$1=captionStream,StreamTypes$2=streamTypes,TimestampRolloverStream=timestampRolloverStream.TimestampRolloverStream;(TransportPacketStream=function(){var buffer=new Uint8Array(188),bytesInBuffer=0;TransportPacketStream.prototype.init.call(this),this.push=function(bytes){var everything,startIndex=0,endIndex=188;for(bytesInBuffer?((everything=new Uint8Array(bytes.byteLength+bytesInBuffer)).set(buffer.subarray(0,bytesInBuffer)),everything.set(bytes,bytesInBuffer),bytesInBuffer=0):everything=bytes;endIndex<everything.byteLength;)71!==everything[startIndex]||71!==everything[endIndex]?(startIndex++,endIndex++):(this.trigger("data",everything.subarray(startIndex,endIndex)),startIndex+=188,endIndex+=188);startIndex<everything.byteLength&&(buffer.set(everything.subarray(startIndex),0),bytesInBuffer=everything.byteLength-startIndex)},this.flush=function(){188===bytesInBuffer&&71===buffer[0]&&(this.trigger("data",buffer),bytesInBuffer=0),this.trigger("done")},this.endTimeline=function(){this.flush(),this.trigger("endedtimeline")},this.reset=function(){bytesInBuffer=0,this.trigger("reset")}}).prototype=new Stream$4,TransportParseStream=function(){var parsePsi,parsePat,parsePmt,self;TransportParseStream.prototype.init.call(this),self=this,this.packetsWaitingForPmt=[],this.programMapTable=void 0,parsePsi=function(payload,psi){var offset=0;psi.payloadUnitStartIndicator&&(offset+=payload[offset]+1),"pat"===psi.type?parsePat(payload.subarray(offset),psi):parsePmt(payload.subarray(offset),psi)},parsePat=function(payload,pat){pat.section_number=payload[7],pat.last_section_number=payload[8],self.pmtPid=(31&payload[10])<<8|payload[11],pat.pmtPid=self.pmtPid},parsePmt=function(payload,pmt){var tableEnd,offset;if(1&payload[5]){for(self.programMapTable={video:null,audio:null,"timed-metadata":{}},tableEnd=3+((15&payload[1])<<8|payload[2])-4,offset=12+((15&payload[10])<<8|payload[11]);offset<tableEnd;){var streamType=payload[offset],pid=(31&payload[offset+1])<<8|payload[offset+2];streamType===StreamTypes$2.H264_STREAM_TYPE&&null===self.programMapTable.video?self.programMapTable.video=pid:streamType===StreamTypes$2.ADTS_STREAM_TYPE&&null===self.programMapTable.audio?self.programMapTable.audio=pid:streamType===StreamTypes$2.METADATA_STREAM_TYPE&&(self.programMapTable["timed-metadata"][pid]=streamType),offset+=5+((15&payload[offset+3])<<8|payload[offset+4])}pmt.programMapTable=self.programMapTable}},this.push=function(packet){var result={},offset=4;if(result.payloadUnitStartIndicator=!!(64&packet[1]),result.pid=31&packet[1],result.pid<<=8,result.pid|=packet[2],(48&packet[3])>>>4>1&&(offset+=packet[offset]+1),0===result.pid)result.type="pat",parsePsi(packet.subarray(offset),result),this.trigger("data",result);else if(result.pid===this.pmtPid)for(result.type="pmt",parsePsi(packet.subarray(offset),result),this.trigger("data",result);this.packetsWaitingForPmt.length;)this.processPes_.apply(this,this.packetsWaitingForPmt.shift());else void 0===this.programMapTable?this.packetsWaitingForPmt.push([packet,offset,result]):this.processPes_(packet,offset,result)},this.processPes_=function(packet,offset,result){result.pid===this.programMapTable.video?result.streamType=StreamTypes$2.H264_STREAM_TYPE:result.pid===this.programMapTable.audio?result.streamType=StreamTypes$2.ADTS_STREAM_TYPE:result.streamType=this.programMapTable["timed-metadata"][result.pid],result.type="pes",result.data=packet.subarray(offset),this.trigger("data",result)}},TransportParseStream.prototype=new Stream$4,TransportParseStream.STREAM_TYPES={h264:27,adts:15},ElementaryStream=function(){var programMapTable,self=this,segmentHadPmt=!1,video={data:[],size:0},audio={data:[],size:0},timedMetadata={data:[],size:0},flushStream=function(stream,type,forceFlush){var packetFlushable,fragment,packetData=new Uint8Array(stream.size),event={type:type},i=0,offset=0;if(stream.data.length&&!(stream.size<9)){for(event.trackId=stream.data[0].pid,i=0;i<stream.data.length;i++)fragment=stream.data[i],packetData.set(fragment.data,offset),offset+=fragment.data.byteLength;!function(payload,pes){var ptsDtsFlags;const startPrefix=payload[0]<<16|payload[1]<<8|payload[2];pes.data=new Uint8Array,1===startPrefix&&(pes.packetLength=6+(payload[4]<<8|payload[5]),pes.dataAlignmentIndicator=0!=(4&payload[6]),192&(ptsDtsFlags=payload[7])&&(pes.pts=(14&payload[9])<<27|(255&payload[10])<<20|(254&payload[11])<<12|(255&payload[12])<<5|(254&payload[13])>>>3,pes.pts*=4,pes.pts+=(6&payload[13])>>>1,pes.dts=pes.pts,64&ptsDtsFlags&&(pes.dts=(14&payload[14])<<27|(255&payload[15])<<20|(254&payload[16])<<12|(255&payload[17])<<5|(254&payload[18])>>>3,pes.dts*=4,pes.dts+=(6&payload[18])>>>1)),pes.data=payload.subarray(9+payload[8]))}(packetData,event),packetFlushable="video"===type||event.packetLength<=stream.size,(forceFlush||packetFlushable)&&(stream.size=0,stream.data.length=0),packetFlushable&&self.trigger("data",event)}};ElementaryStream.prototype.init.call(this),this.push=function(data){({pat:function(){},pes:function(){var stream,streamType;switch(data.streamType){case StreamTypes$2.H264_STREAM_TYPE:stream=video,streamType="video";break;case StreamTypes$2.ADTS_STREAM_TYPE:stream=audio,streamType="audio";break;case StreamTypes$2.METADATA_STREAM_TYPE:stream=timedMetadata,streamType="timed-metadata";break;default:return}data.payloadUnitStartIndicator&&flushStream(stream,streamType,!0),stream.data.push(data),stream.size+=data.data.byteLength},pmt:function(){var event={type:"metadata",tracks:[]};null!==(programMapTable=data.programMapTable).video&&event.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+programMapTable.video,codec:"avc",type:"video"}),null!==programMapTable.audio&&event.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+programMapTable.audio,codec:"adts",type:"audio"}),segmentHadPmt=!0,self.trigger("data",event)}})[data.type]()},this.reset=function(){video.size=0,video.data.length=0,audio.size=0,audio.data.length=0,this.trigger("reset")},this.flushStreams_=function(){flushStream(video,"video"),flushStream(audio,"audio"),flushStream(timedMetadata,"timed-metadata")},this.flush=function(){if(!segmentHadPmt&&programMapTable){var pmt={type:"metadata",tracks:[]};null!==programMapTable.video&&pmt.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+programMapTable.video,codec:"avc",type:"video"}),null!==programMapTable.audio&&pmt.tracks.push({timelineStartInfo:{baseMediaDecodeTime:0},id:+programMapTable.audio,codec:"adts",type:"audio"}),self.trigger("data",pmt)}segmentHadPmt=!1,this.flushStreams_(),this.trigger("done")}},ElementaryStream.prototype=new Stream$4;var m2ts$1={PAT_PID:0,MP2T_PACKET_LENGTH:188,TransportPacketStream:TransportPacketStream,TransportParseStream:TransportParseStream,ElementaryStream:ElementaryStream,TimestampRolloverStream:TimestampRolloverStream,CaptionStream:CaptionStream$1.CaptionStream,Cea608Stream:CaptionStream$1.Cea608Stream,Cea708Stream:CaptionStream$1.Cea708Stream,MetadataStream:metadataStream};for(var type in StreamTypes$2)StreamTypes$2.hasOwnProperty(type)&&(m2ts$1[type]=StreamTypes$2[type]);var AdtsStream$1,m2ts_1=m2ts$1,ONE_SECOND_IN_TS$2=clock$2.ONE_SECOND_IN_TS,ADTS_SAMPLING_FREQUENCIES$1=[96e3,88200,64e3,48e3,44100,32e3,24e3,22050,16e3,12e3,11025,8e3,7350];(AdtsStream$1=function(handlePartialSegments){var buffer,frameNum=0;AdtsStream$1.prototype.init.call(this),this.skipWarn_=function(start,end){this.trigger("log",{level:"warn",message:"adts skiping bytes ".concat(start," to ").concat(end," in frame ").concat(frameNum," outside syncword")})},this.push=function(packet){var frameLength,protectionSkipBytes,oldBuffer,sampleCount,adtsFrameDuration,i=0;if(handlePartialSegments||(frameNum=0),"audio"===packet.type){var skip;for(buffer&&buffer.length?(oldBuffer=buffer,(buffer=new Uint8Array(oldBuffer.byteLength+packet.data.byteLength)).set(oldBuffer),buffer.set(packet.data,oldBuffer.byteLength)):buffer=packet.data;i+7<buffer.length;)if(255===buffer[i]&&240==(246&buffer[i+1])){if("number"==typeof skip&&(this.skipWarn_(skip,i),skip=null),protectionSkipBytes=2*(1&~buffer[i+1]),frameLength=(3&buffer[i+3])<<11|buffer[i+4]<<3|(224&buffer[i+5])>>5,adtsFrameDuration=(sampleCount=1024*(1+(3&buffer[i+6])))*ONE_SECOND_IN_TS$2/ADTS_SAMPLING_FREQUENCIES$1[(60&buffer[i+2])>>>2],buffer.byteLength-i<frameLength)break;this.trigger("data",{pts:packet.pts+frameNum*adtsFrameDuration,dts:packet.dts+frameNum*adtsFrameDuration,sampleCount:sampleCount,audioobjecttype:1+(buffer[i+2]>>>6&3),channelcount:(1&buffer[i+2])<<2|(192&buffer[i+3])>>>6,samplerate:ADTS_SAMPLING_FREQUENCIES$1[(60&buffer[i+2])>>>2],samplingfrequencyindex:(60&buffer[i+2])>>>2,samplesize:16,data:buffer.subarray(i+7+protectionSkipBytes,i+frameLength)}),frameNum++,i+=frameLength}else"number"!=typeof skip&&(skip=i),i++;"number"==typeof skip&&(this.skipWarn_(skip,i),skip=null),buffer=buffer.subarray(i)}},this.flush=function(){frameNum=0,this.trigger("done")},this.reset=function(){buffer=void 0,this.trigger("reset")},this.endTimeline=function(){buffer=void 0,this.trigger("endedtimeline")}}).prototype=new stream;var ExpGolomb$1,adts=AdtsStream$1;ExpGolomb$1=function(workingData){var workingBytesAvailable=workingData.byteLength,workingWord=0,workingBitsAvailable=0;this.length=function(){return 8*workingBytesAvailable},this.bitsAvailable=function(){return 8*workingBytesAvailable+workingBitsAvailable},this.loadWord=function(){var position=workingData.byteLength-workingBytesAvailable,workingBytes=new Uint8Array(4),availableBytes=Math.min(4,workingBytesAvailable);if(0===availableBytes)throw new Error("no bytes available");workingBytes.set(workingData.subarray(position,position+availableBytes)),workingWord=new DataView(workingBytes.buffer).getUint32(0),workingBitsAvailable=8*availableBytes,workingBytesAvailable-=availableBytes},this.skipBits=function(count){var skipBytes;workingBitsAvailable>count?(workingWord<<=count,workingBitsAvailable-=count):(count-=workingBitsAvailable,count-=8*(skipBytes=Math.floor(count/8)),workingBytesAvailable-=skipBytes,this.loadWord(),workingWord<<=count,workingBitsAvailable-=count)},this.readBits=function(size){var bits=Math.min(workingBitsAvailable,size),valu=workingWord>>>32-bits;return(workingBitsAvailable-=bits)>0?workingWord<<=bits:workingBytesAvailable>0&&this.loadWord(),(bits=size-bits)>0?valu<<bits|this.readBits(bits):valu},this.skipLeadingZeros=function(){var leadingZeroCount;for(leadingZeroCount=0;leadingZeroCount<workingBitsAvailable;++leadingZeroCount)if(0!=(workingWord&2147483648>>>leadingZeroCount))return workingWord<<=leadingZeroCount,workingBitsAvailable-=leadingZeroCount,leadingZeroCount;return this.loadWord(),leadingZeroCount+this.skipLeadingZeros()},this.skipUnsignedExpGolomb=function(){this.skipBits(1+this.skipLeadingZeros())},this.skipExpGolomb=function(){this.skipBits(1+this.skipLeadingZeros())},this.readUnsignedExpGolomb=function(){var clz=this.skipLeadingZeros();return this.readBits(clz+1)-1},this.readExpGolomb=function(){var valu=this.readUnsignedExpGolomb();return 1&valu?1+valu>>>1:-1*(valu>>>1)},this.readBoolean=function(){return 1===this.readBits(1)},this.readUnsignedByte=function(){return this.readBits(8)},this.loadWord()};var H264Stream$1,NalByteStream,PROFILES_WITH_OPTIONAL_SPS_DATA,Stream$2=stream,ExpGolomb=ExpGolomb$1;(NalByteStream=function(){var i,buffer,syncPoint=0;NalByteStream.prototype.init.call(this),this.push=function(data){var swapBuffer;buffer?((swapBuffer=new Uint8Array(buffer.byteLength+data.data.byteLength)).set(buffer),swapBuffer.set(data.data,buffer.byteLength),buffer=swapBuffer):buffer=data.data;for(var len=buffer.byteLength;syncPoint<len-3;syncPoint++)if(1===buffer[syncPoint+2]){i=syncPoint+5;break}for(;i<len;)switch(buffer[i]){case 0:if(0!==buffer[i-1]){i+=2;break}if(0!==buffer[i-2]){i++;break}syncPoint+3!==i-2&&this.trigger("data",buffer.subarray(syncPoint+3,i-2));do{i++}while(1!==buffer[i]&&i<len);syncPoint=i-2,i+=3;break;case 1:if(0!==buffer[i-1]||0!==buffer[i-2]){i+=3;break}this.trigger("data",buffer.subarray(syncPoint+3,i-2)),syncPoint=i-2,i+=3;break;default:i+=3}buffer=buffer.subarray(syncPoint),i-=syncPoint,syncPoint=0},this.reset=function(){buffer=null,syncPoint=0,this.trigger("reset")},this.flush=function(){buffer&&buffer.byteLength>3&&this.trigger("data",buffer.subarray(syncPoint+3)),buffer=null,syncPoint=0,this.trigger("done")},this.endTimeline=function(){this.flush(),this.trigger("endedtimeline")}}).prototype=new Stream$2,PROFILES_WITH_OPTIONAL_SPS_DATA={100:!0,110:!0,122:!0,244:!0,44:!0,83:!0,86:!0,118:!0,128:!0,138:!0,139:!0,134:!0},H264Stream$1=function(){var self,trackId,currentPts,currentDts,discardEmulationPreventionBytes,readSequenceParameterSet,skipScalingList,nalByteStream=new NalByteStream;H264Stream$1.prototype.init.call(this),self=this,this.push=function(packet){"video"===packet.type&&(trackId=packet.trackId,currentPts=packet.pts,currentDts=packet.dts,nalByteStream.push(packet))},nalByteStream.on("data",(function(data){var event={trackId:trackId,pts:currentPts,dts:currentDts,data:data,nalUnitTypeCode:31&data[0]};switch(event.nalUnitTypeCode){case 5:event.nalUnitType="slice_layer_without_partitioning_rbsp_idr";break;case 6:event.nalUnitType="sei_rbsp",event.escapedRBSP=discardEmulationPreventionBytes(data.subarray(1));break;case 7:event.nalUnitType="seq_parameter_set_rbsp",event.escapedRBSP=discardEmulationPreventionBytes(data.subarray(1)),event.config=readSequenceParameterSet(event.escapedRBSP);break;case 8:event.nalUnitType="pic_parameter_set_rbsp";break;case 9:event.nalUnitType="access_unit_delimiter_rbsp"}self.trigger("data",event)})),nalByteStream.on("done",(function(){self.trigger("done")})),nalByteStream.on("partialdone",(function(){self.trigger("partialdone")})),nalByteStream.on("reset",(function(){self.trigger("reset")})),nalByteStream.on("endedtimeline",(function(){self.trigger("endedtimeline")})),this.flush=function(){nalByteStream.flush()},this.partialFlush=function(){nalByteStream.partialFlush()},this.reset=function(){nalByteStream.reset()},this.endTimeline=function(){nalByteStream.endTimeline()},skipScalingList=function(count,expGolombDecoder){var j,lastScale=8,nextScale=8;for(j=0;j<count;j++)0!==nextScale&&(nextScale=(lastScale+expGolombDecoder.readExpGolomb()+256)%256),lastScale=0===nextScale?lastScale:nextScale},discardEmulationPreventionBytes=function(data){for(var newLength,newData,length=data.byteLength,emulationPreventionBytesPositions=[],i=1;i<length-2;)0===data[i]&&0===data[i+1]&&3===data[i+2]?(emulationPreventionBytesPositions.push(i+2),i+=2):i++;if(0===emulationPreventionBytesPositions.length)return data;newLength=length-emulationPreventionBytesPositions.length,newData=new Uint8Array(newLength);var sourceIndex=0;for(i=0;i<newLength;sourceIndex++,i++)sourceIndex===emulationPreventionBytesPositions[0]&&(sourceIndex++,emulationPreventionBytesPositions.shift()),newData[i]=data[sourceIndex];return newData},readSequenceParameterSet=function(data){var expGolombDecoder,profileIdc,levelIdc,profileCompatibility,chromaFormatIdc,picOrderCntType,numRefFramesInPicOrderCntCycle,picWidthInMbsMinus1,picHeightInMapUnitsMinus1,frameMbsOnlyFlag,scalingListCount,i,frameCropLeftOffset=0,frameCropRightOffset=0,frameCropTopOffset=0,frameCropBottomOffset=0,sarRatio=[1,1];if(profileIdc=(expGolombDecoder=new ExpGolomb(data)).readUnsignedByte(),profileCompatibility=expGolombDecoder.readUnsignedByte(),levelIdc=expGolombDecoder.readUnsignedByte(),expGolombDecoder.skipUnsignedExpGolomb(),PROFILES_WITH_OPTIONAL_SPS_DATA[profileIdc]&&(3===(chromaFormatIdc=expGolombDecoder.readUnsignedExpGolomb())&&expGolombDecoder.skipBits(1),expGolombDecoder.skipUnsignedExpGolomb(),expGolombDecoder.skipUnsignedExpGolomb(),expGolombDecoder.skipBits(1),expGolombDecoder.readBoolean()))for(scalingListCount=3!==chromaFormatIdc?8:12,i=0;i<scalingListCount;i++)expGolombDecoder.readBoolean()&&skipScalingList(i<6?16:64,expGolombDecoder);if(expGolombDecoder.skipUnsignedExpGolomb(),0===(picOrderCntType=expGolombDecoder.readUnsignedExpGolomb()))expGolombDecoder.readUnsignedExpGolomb();else if(1===picOrderCntType)for(expGolombDecoder.skipBits(1),expGolombDecoder.skipExpGolomb(),expGolombDecoder.skipExpGolomb(),numRefFramesInPicOrderCntCycle=expGolombDecoder.readUnsignedExpGolomb(),i=0;i<numRefFramesInPicOrderCntCycle;i++)expGolombDecoder.skipExpGolomb();if(expGolombDecoder.skipUnsignedExpGolomb(),expGolombDecoder.skipBits(1),picWidthInMbsMinus1=expGolombDecoder.readUnsignedExpGolomb(),picHeightInMapUnitsMinus1=expGolombDecoder.readUnsignedExpGolomb(),0===(frameMbsOnlyFlag=expGolombDecoder.readBits(1))&&expGolombDecoder.skipBits(1),expGolombDecoder.skipBits(1),expGolombDecoder.readBoolean()&&(frameCropLeftOffset=expGolombDecoder.readUnsignedExpGolomb(),frameCropRightOffset=expGolombDecoder.readUnsignedExpGolomb(),frameCropTopOffset=expGolombDecoder.readUnsignedExpGolomb(),frameCropBottomOffset=expGolombDecoder.readUnsignedExpGolomb()),expGolombDecoder.readBoolean()&&expGolombDecoder.readBoolean()){switch(expGolombDecoder.readUnsignedByte()){case 1:sarRatio=[1,1];break;case 2:sarRatio=[12,11];break;case 3:sarRatio=[10,11];break;case 4:sarRatio=[16,11];break;case 5:sarRatio=[40,33];break;case 6:sarRatio=[24,11];break;case 7:sarRatio=[20,11];break;case 8:sarRatio=[32,11];break;case 9:sarRatio=[80,33];break;case 10:sarRatio=[18,11];break;case 11:sarRatio=[15,11];break;case 12:sarRatio=[64,33];break;case 13:sarRatio=[160,99];break;case 14:sarRatio=[4,3];break;case 15:sarRatio=[3,2];break;case 16:sarRatio=[2,1];break;case 255:sarRatio=[expGolombDecoder.readUnsignedByte()<<8|expGolombDecoder.readUnsignedByte(),expGolombDecoder.readUnsignedByte()<<8|expGolombDecoder.readUnsignedByte()]}sarRatio&&(sarRatio[0],sarRatio[1])}return{profileIdc:profileIdc,levelIdc:levelIdc,profileCompatibility:profileCompatibility,width:16*(picWidthInMbsMinus1+1)-2*frameCropLeftOffset-2*frameCropRightOffset,height:(2-frameMbsOnlyFlag)*(picHeightInMapUnitsMinus1+1)*16-2*frameCropTopOffset-2*frameCropBottomOffset,sarRatio:sarRatio}}},H264Stream$1.prototype=new Stream$2;var AacStream$1,h264={H264Stream:H264Stream$1,NalByteStream:NalByteStream},ADTS_SAMPLING_FREQUENCIES=[96e3,88200,64e3,48e3,44100,32e3,24e3,22050,16e3,12e3,11025,8e3,7350],parseId3TagSize=function(header,byteIndex){var returnSize=header[byteIndex+6]<<21|header[byteIndex+7]<<14|header[byteIndex+8]<<7|header[byteIndex+9];return returnSize=returnSize>=0?returnSize:0,(16&header[byteIndex+5])>>4?returnSize+20:returnSize+10},getId3Offset=function(data,offset){return data.length-offset<10||data[offset]!=="I".charCodeAt(0)||data[offset+1]!=="D".charCodeAt(0)||data[offset+2]!=="3".charCodeAt(0)?offset:(offset+=parseId3TagSize(data,offset),getId3Offset(data,offset))},parseSyncSafeInteger=function(data){return data[0]<<21|data[1]<<14|data[2]<<7|data[3]},utils={isLikelyAacData:function(data){var offset=getId3Offset(data,0);return data.length>=offset+2&&255==(255&data[offset])&&240==(240&data[offset+1])&&16==(22&data[offset+1])},parseId3TagSize:parseId3TagSize,parseAdtsSize:function(header,byteIndex){var lowThree=(224&header[byteIndex+5])>>5,middle=header[byteIndex+4]<<3;return 6144&header[byteIndex+3]|middle|lowThree},parseType:function(header,byteIndex){return header[byteIndex]==="I".charCodeAt(0)&&header[byteIndex+1]==="D".charCodeAt(0)&&header[byteIndex+2]==="3".charCodeAt(0)?"timed-metadata":!0&header[byteIndex]&&240==(240&header[byteIndex+1])?"audio":null},parseSampleRate:function(packet){for(var i=0;i+5<packet.length;){if(255===packet[i]&&240==(246&packet[i+1]))return ADTS_SAMPLING_FREQUENCIES[(60&packet[i+2])>>>2];i++}return null},parseAacTimestamp:function(packet){var frameStart,frameSize,frame;frameStart=10,64&packet[5]&&(frameStart+=4,frameStart+=parseSyncSafeInteger(packet.subarray(10,14)));do{if((frameSize=parseSyncSafeInteger(packet.subarray(frameStart+4,frameStart+8)))<1)return null;if("PRIV"===String.fromCharCode(packet[frameStart],packet[frameStart+1],packet[frameStart+2],packet[frameStart+3])){frame=packet.subarray(frameStart+10,frameStart+frameSize+10);for(var i=0;i<frame.byteLength;i++)if(0===frame[i]){var owner=unescape(function(bytes,start,end){var i,result="";for(i=start;i<end;i++)result+="%"+("00"+bytes[i].toString(16)).slice(-2);return result}(frame,0,i));if("com.apple.streaming.transportStreamTimestamp"===owner){var d=frame.subarray(i+1),size=(1&d[3])<<30|d[4]<<22|d[5]<<14|d[6]<<6|d[7]>>>2;return size*=4,size+=3&d[7]}break}}frameStart+=10,frameStart+=frameSize}while(frameStart<packet.byteLength);return null}},aacUtils=utils;(AacStream$1=function(){var everything=new Uint8Array,timeStamp=0;AacStream$1.prototype.init.call(this),this.setTimestamp=function(timestamp){timeStamp=timestamp},this.push=function(bytes){var bytesLeft,chunk,packet,tempLength,frameSize=0,byteIndex=0;for(everything.length?(tempLength=everything.length,(everything=new Uint8Array(bytes.byteLength+tempLength)).set(everything.subarray(0,tempLength)),everything.set(bytes,tempLength)):everything=bytes;everything.length-byteIndex>=3;)if(everything[byteIndex]!=="I".charCodeAt(0)||everything[byteIndex+1]!=="D".charCodeAt(0)||everything[byteIndex+2]!=="3".charCodeAt(0))if(255!=(255&everything[byteIndex])||240!=(240&everything[byteIndex+1]))byteIndex++;else{if(everything.length-byteIndex<7)break;if(byteIndex+(frameSize=aacUtils.parseAdtsSize(everything,byteIndex))>everything.length)break;packet={type:"audio",data:everything.subarray(byteIndex,byteIndex+frameSize),pts:timeStamp,dts:timeStamp},this.trigger("data",packet),byteIndex+=frameSize}else{if(everything.length-byteIndex<10)break;if(byteIndex+(frameSize=aacUtils.parseId3TagSize(everything,byteIndex))>everything.length)break;chunk={type:"timed-metadata",data:everything.subarray(byteIndex,byteIndex+frameSize)},this.trigger("data",chunk),byteIndex+=frameSize}bytesLeft=everything.length-byteIndex,everything=bytesLeft>0?everything.subarray(byteIndex):new Uint8Array},this.reset=function(){everything=new Uint8Array,this.trigger("reset")},this.endTimeline=function(){everything=new Uint8Array,this.trigger("endedtimeline")}}).prototype=new stream;var VideoSegmentStream,AudioSegmentStream,Transmuxer,CoalesceStream,Stream=stream,mp4=mp4Generator,frameUtils=frameUtils$1,audioFrameUtils=audioFrameUtils$1,trackDecodeInfo=trackDecodeInfo$1,m2ts=m2ts_1,clock=clock$2,AdtsStream=adts,H264Stream=h264.H264Stream,AacStream=AacStream$1,isLikelyAacData=utils.isLikelyAacData,ONE_SECOND_IN_TS$1=clock$2.ONE_SECOND_IN_TS,AUDIO_PROPERTIES=["audioobjecttype","channelcount","samplerate","samplingfrequencyindex","samplesize"],VIDEO_PROPERTIES=["width","height","profileIdc","levelIdc","profileCompatibility","sarRatio"],retriggerForStream=function(key,event){event.stream=key,this.trigger("log",event)},addPipelineLogRetriggers=function(transmuxer,pipeline){for(var keys=Object.keys(pipeline),i=0;i<keys.length;i++){var key=keys[i];"headOfPipeline"!==key&&pipeline[key].on&&pipeline[key].on("log",retriggerForStream.bind(transmuxer,key))}},arrayEquals=function(a,b){var i;if(a.length!==b.length)return!1;for(i=0;i<a.length;i++)if(a[i]!==b[i])return!1;return!0},generateSegmentTimingInfo=function(baseMediaDecodeTime,startDts,startPts,endDts,endPts,prependedContentDuration){return{start:{dts:baseMediaDecodeTime,pts:baseMediaDecodeTime+(startPts-startDts)},end:{dts:baseMediaDecodeTime+(endDts-startDts),pts:baseMediaDecodeTime+(endPts-startPts)},prependedContentDuration:prependedContentDuration,baseMediaDecodeTime:baseMediaDecodeTime}};AudioSegmentStream=function(track,options){var sequenceNumber,adtsFrames=[],earliestAllowedDts=0,audioAppendStartTs=0,videoBaseMediaDecodeTime=1/0;sequenceNumber=(options=options||{}).firstSequenceNumber||0,AudioSegmentStream.prototype.init.call(this),this.push=function(data){trackDecodeInfo.collectDtsInfo(track,data),track&&AUDIO_PROPERTIES.forEach((function(prop){track[prop]=data[prop]})),adtsFrames.push(data)},this.setEarliestDts=function(earliestDts){earliestAllowedDts=earliestDts},this.setVideoBaseMediaDecodeTime=function(baseMediaDecodeTime){videoBaseMediaDecodeTime=baseMediaDecodeTime},this.setAudioAppendStart=function(timestamp){audioAppendStartTs=timestamp},this.flush=function(){var frames,moof,mdat,boxes,frameDuration,segmentDuration,videoClockCyclesOfSilencePrefixed;0!==adtsFrames.length?(frames=audioFrameUtils.trimAdtsFramesByEarliestDts(adtsFrames,track,earliestAllowedDts),track.baseMediaDecodeTime=trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track,options.keepOriginalTimestamps),videoClockCyclesOfSilencePrefixed=audioFrameUtils.prefixWithSilence(track,frames,audioAppendStartTs,videoBaseMediaDecodeTime),track.samples=audioFrameUtils.generateSampleTable(frames),mdat=mp4.mdat(audioFrameUtils.concatenateFrameData(frames)),adtsFrames=[],moof=mp4.moof(sequenceNumber,[track]),boxes=new Uint8Array(moof.byteLength+mdat.byteLength),sequenceNumber++,boxes.set(moof),boxes.set(mdat,moof.byteLength),trackDecodeInfo.clearDtsInfo(track),frameDuration=Math.ceil(1024*ONE_SECOND_IN_TS$1/track.samplerate),frames.length&&(segmentDuration=frames.length*frameDuration,this.trigger("segmentTimingInfo",generateSegmentTimingInfo(clock.audioTsToVideoTs(track.baseMediaDecodeTime,track.samplerate),frames[0].dts,frames[0].pts,frames[0].dts+segmentDuration,frames[0].pts+segmentDuration,videoClockCyclesOfSilencePrefixed||0)),this.trigger("timingInfo",{start:frames[0].pts,end:frames[0].pts+segmentDuration})),this.trigger("data",{track:track,boxes:boxes}),this.trigger("done","AudioSegmentStream")):this.trigger("done","AudioSegmentStream")},this.reset=function(){trackDecodeInfo.clearDtsInfo(track),adtsFrames=[],this.trigger("reset")}},AudioSegmentStream.prototype=new Stream,VideoSegmentStream=function(track,options){var sequenceNumber,config,pps,nalUnits=[],gopsToAlignWith=[];sequenceNumber=(options=options||{}).firstSequenceNumber||0,VideoSegmentStream.prototype.init.call(this),delete track.minPTS,this.gopCache_=[],this.push=function(nalUnit){trackDecodeInfo.collectDtsInfo(track,nalUnit),"seq_parameter_set_rbsp"!==nalUnit.nalUnitType||config||(config=nalUnit.config,track.sps=[nalUnit.data],VIDEO_PROPERTIES.forEach((function(prop){track[prop]=config[prop]}),this)),"pic_parameter_set_rbsp"!==nalUnit.nalUnitType||pps||(pps=nalUnit.data,track.pps=[nalUnit.data]),nalUnits.push(nalUnit)},this.flush=function(){for(var frames,gopForFusion,gops,moof,mdat,boxes,firstGop,lastGop,prependedContentDuration=0;nalUnits.length&&"access_unit_delimiter_rbsp"!==nalUnits[0].nalUnitType;)nalUnits.shift();if(0===nalUnits.length)return this.resetStream_(),void this.trigger("done","VideoSegmentStream");if(frames=frameUtils.groupNalsIntoFrames(nalUnits),(gops=frameUtils.groupFramesIntoGops(frames))[0][0].keyFrame||((gopForFusion=this.getGopForFusion_(nalUnits[0],track))?(prependedContentDuration=gopForFusion.duration,gops.unshift(gopForFusion),gops.byteLength+=gopForFusion.byteLength,gops.nalCount+=gopForFusion.nalCount,gops.pts=gopForFusion.pts,gops.dts=gopForFusion.dts,gops.duration+=gopForFusion.duration):gops=frameUtils.extendFirstKeyFrame(gops)),gopsToAlignWith.length){var alignedGops;if(!(alignedGops=options.alignGopsAtEnd?this.alignGopsAtEnd_(gops):this.alignGopsAtStart_(gops)))return this.gopCache_.unshift({gop:gops.pop(),pps:track.pps,sps:track.sps}),this.gopCache_.length=Math.min(6,this.gopCache_.length),nalUnits=[],this.resetStream_(),void this.trigger("done","VideoSegmentStream");trackDecodeInfo.clearDtsInfo(track),gops=alignedGops}trackDecodeInfo.collectDtsInfo(track,gops),track.samples=frameUtils.generateSampleTable(gops),mdat=mp4.mdat(frameUtils.concatenateNalData(gops)),track.baseMediaDecodeTime=trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track,options.keepOriginalTimestamps),this.trigger("processedGopsInfo",gops.map((function(gop){return{pts:gop.pts,dts:gop.dts,byteLength:gop.byteLength}}))),firstGop=gops[0],lastGop=gops[gops.length-1],this.trigger("segmentTimingInfo",generateSegmentTimingInfo(track.baseMediaDecodeTime,firstGop.dts,firstGop.pts,lastGop.dts+lastGop.duration,lastGop.pts+lastGop.duration,prependedContentDuration)),this.trigger("timingInfo",{start:gops[0].pts,end:gops[gops.length-1].pts+gops[gops.length-1].duration}),this.gopCache_.unshift({gop:gops.pop(),pps:track.pps,sps:track.sps}),this.gopCache_.length=Math.min(6,this.gopCache_.length),nalUnits=[],this.trigger("baseMediaDecodeTime",track.baseMediaDecodeTime),this.trigger("timelineStartInfo",track.timelineStartInfo),moof=mp4.moof(sequenceNumber,[track]),boxes=new Uint8Array(moof.byteLength+mdat.byteLength),sequenceNumber++,boxes.set(moof),boxes.set(mdat,moof.byteLength),this.trigger("data",{track:track,boxes:boxes}),this.resetStream_(),this.trigger("done","VideoSegmentStream")},this.reset=function(){this.resetStream_(),nalUnits=[],this.gopCache_.length=0,gopsToAlignWith.length=0,this.trigger("reset")},this.resetStream_=function(){trackDecodeInfo.clearDtsInfo(track),config=void 0,pps=void 0},this.getGopForFusion_=function(nalUnit){var dtsDistance,nearestGopObj,currentGop,currentGopObj,i,nearestDistance=1/0;for(i=0;i<this.gopCache_.length;i++)currentGop=(currentGopObj=this.gopCache_[i]).gop,track.pps&&arrayEquals(track.pps[0],currentGopObj.pps[0])&&track.sps&&arrayEquals(track.sps[0],currentGopObj.sps[0])&&(currentGop.dts<track.timelineStartInfo.dts||(dtsDistance=nalUnit.dts-currentGop.dts-currentGop.duration)>=-1e4&&dtsDistance<=45e3&&(!nearestGopObj||nearestDistance>dtsDistance)&&(nearestGopObj=currentGopObj,nearestDistance=dtsDistance));return nearestGopObj?nearestGopObj.gop:null},this.alignGopsAtStart_=function(gops){var alignIndex,gopIndex,align,gop,byteLength,nalCount,duration,alignedGops;for(byteLength=gops.byteLength,nalCount=gops.nalCount,duration=gops.duration,alignIndex=gopIndex=0;alignIndex<gopsToAlignWith.length&&gopIndex<gops.length&&(align=gopsToAlignWith[alignIndex],gop=gops[gopIndex],align.pts!==gop.pts);)gop.pts>align.pts?alignIndex++:(gopIndex++,byteLength-=gop.byteLength,nalCount-=gop.nalCount,duration-=gop.duration);return 0===gopIndex?gops:gopIndex===gops.length?null:((alignedGops=gops.slice(gopIndex)).byteLength=byteLength,alignedGops.duration=duration,alignedGops.nalCount=nalCount,alignedGops.pts=alignedGops[0].pts,alignedGops.dts=alignedGops[0].dts,alignedGops)},this.alignGopsAtEnd_=function(gops){var alignIndex,gopIndex,align,gop,alignEndIndex,matchFound,trimIndex;for(alignIndex=gopsToAlignWith.length-1,gopIndex=gops.length-1,alignEndIndex=null,matchFound=!1;alignIndex>=0&&gopIndex>=0;){if(align=gopsToAlignWith[alignIndex],gop=gops[gopIndex],align.pts===gop.pts){matchFound=!0;break}align.pts>gop.pts?alignIndex--:(alignIndex===gopsToAlignWith.length-1&&(alignEndIndex=gopIndex),gopIndex--)}if(!matchFound&&null===alignEndIndex)return null;if(0===(trimIndex=matchFound?gopIndex:alignEndIndex))return gops;var alignedGops=gops.slice(trimIndex),metadata=alignedGops.reduce((function(total,gop){return total.byteLength+=gop.byteLength,total.duration+=gop.duration,total.nalCount+=gop.nalCount,total}),{byteLength:0,duration:0,nalCount:0});return alignedGops.byteLength=metadata.byteLength,alignedGops.duration=metadata.duration,alignedGops.nalCount=metadata.nalCount,alignedGops.pts=alignedGops[0].pts,alignedGops.dts=alignedGops[0].dts,alignedGops},this.alignGopsWith=function(newGopsToAlignWith){gopsToAlignWith=newGopsToAlignWith}},VideoSegmentStream.prototype=new Stream,CoalesceStream=function(options,metadataStream){this.numberOfTracks=0,this.metadataStream=metadataStream,void 0!==(options=options||{}).remux?this.remuxTracks=!!options.remux:this.remuxTracks=!0,"boolean"==typeof options.keepOriginalTimestamps?this.keepOriginalTimestamps=options.keepOriginalTimestamps:this.keepOriginalTimestamps=!1,this.pendingTracks=[],this.videoTrack=null,this.pendingBoxes=[],this.pendingCaptions=[],this.pendingMetadata=[],this.pendingBytes=0,this.emittedTracks=0,CoalesceStream.prototype.init.call(this),this.push=function(output){return output.content||output.text?this.pendingCaptions.push(output):output.frames?this.pendingMetadata.push(output):(this.pendingTracks.push(output.track),this.pendingBytes+=output.boxes.byteLength,"video"===output.track.type&&(this.videoTrack=output.track,this.pendingBoxes.push(output.boxes)),void("audio"===output.track.type&&(this.audioTrack=output.track,this.pendingBoxes.unshift(output.boxes))))}},CoalesceStream.prototype=new Stream,CoalesceStream.prototype.flush=function(flushSource){var caption,id3,initSegment,i,offset=0,event={captions:[],captionStreams:{},metadata:[],info:{}},timelineStartPts=0;if(this.pendingTracks.length<this.numberOfTracks){if("VideoSegmentStream"!==flushSource&&"AudioSegmentStream"!==flushSource)return;if(this.remuxTracks)return;if(0===this.pendingTracks.length)return this.emittedTracks++,void(this.emittedTracks>=this.numberOfTracks&&(this.trigger("done"),this.emittedTracks=0))}if(this.videoTrack?(timelineStartPts=this.videoTrack.timelineStartInfo.pts,VIDEO_PROPERTIES.forEach((function(prop){event.info[prop]=this.videoTrack[prop]}),this)):this.audioTrack&&(timelineStartPts=this.audioTrack.timelineStartInfo.pts,AUDIO_PROPERTIES.forEach((function(prop){event.info[prop]=this.audioTrack[prop]}),this)),this.videoTrack||this.audioTrack){for(1===this.pendingTracks.length?event.type=this.pendingTracks[0].type:event.type="combined",this.emittedTracks+=this.pendingTracks.length,initSegment=mp4.initSegment(this.pendingTracks),event.initSegment=new Uint8Array(initSegment.byteLength),event.initSegment.set(initSegment),event.data=new Uint8Array(this.pendingBytes),i=0;i<this.pendingBoxes.length;i++)event.data.set(this.pendingBoxes[i],offset),offset+=this.pendingBoxes[i].byteLength;for(i=0;i<this.pendingCaptions.length;i++)(caption=this.pendingCaptions[i]).startTime=clock.metadataTsToSeconds(caption.startPts,timelineStartPts,this.keepOriginalTimestamps),caption.endTime=clock.metadataTsToSeconds(caption.endPts,timelineStartPts,this.keepOriginalTimestamps),event.captionStreams[caption.stream]=!0,event.captions.push(caption);for(i=0;i<this.pendingMetadata.length;i++)(id3=this.pendingMetadata[i]).cueTime=clock.metadataTsToSeconds(id3.pts,timelineStartPts,this.keepOriginalTimestamps),event.metadata.push(id3);for(event.metadata.dispatchType=this.metadataStream.dispatchType,this.pendingTracks.length=0,this.videoTrack=null,this.pendingBoxes.length=0,this.pendingCaptions.length=0,this.pendingBytes=0,this.pendingMetadata.length=0,this.trigger("data",event),i=0;i<event.captions.length;i++)caption=event.captions[i],this.trigger("caption",caption);for(i=0;i<event.metadata.length;i++)id3=event.metadata[i],this.trigger("id3Frame",id3)}this.emittedTracks>=this.numberOfTracks&&(this.trigger("done"),this.emittedTracks=0)},CoalesceStream.prototype.setRemux=function(val){this.remuxTracks=val},(Transmuxer=function(options){var videoTrack,audioTrack,self=this,hasFlushed=!0;Transmuxer.prototype.init.call(this),options=options||{},this.baseMediaDecodeTime=options.baseMediaDecodeTime||0,this.transmuxPipeline_={},this.setupAacPipeline=function(){var pipeline={};this.transmuxPipeline_=pipeline,pipeline.type="aac",pipeline.metadataStream=new m2ts.MetadataStream,pipeline.aacStream=new AacStream,pipeline.audioTimestampRolloverStream=new m2ts.TimestampRolloverStream("audio"),pipeline.timedMetadataTimestampRolloverStream=new m2ts.TimestampRolloverStream("timed-metadata"),pipeline.adtsStream=new AdtsStream,pipeline.coalesceStream=new CoalesceStream(options,pipeline.metadataStream),pipeline.headOfPipeline=pipeline.aacStream,pipeline.aacStream.pipe(pipeline.audioTimestampRolloverStream).pipe(pipeline.adtsStream),pipeline.aacStream.pipe(pipeline.timedMetadataTimestampRolloverStream).pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream),pipeline.metadataStream.on("timestamp",(function(frame){pipeline.aacStream.setTimestamp(frame.timeStamp)})),pipeline.aacStream.on("data",(function(data){"timed-metadata"!==data.type&&"audio"!==data.type||pipeline.audioSegmentStream||(audioTrack=audioTrack||{timelineStartInfo:{baseMediaDecodeTime:self.baseMediaDecodeTime},codec:"adts",type:"audio"},pipeline.coalesceStream.numberOfTracks++,pipeline.audioSegmentStream=new AudioSegmentStream(audioTrack,options),pipeline.audioSegmentStream.on("log",self.getLogTrigger_("audioSegmentStream")),pipeline.audioSegmentStream.on("timingInfo",self.trigger.bind(self,"audioTimingInfo")),pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream),self.trigger("trackinfo",{hasAudio:!!audioTrack,hasVideo:!!videoTrack}))})),pipeline.coalesceStream.on("data",this.trigger.bind(this,"data")),pipeline.coalesceStream.on("done",this.trigger.bind(this,"done")),addPipelineLogRetriggers(this,pipeline)},this.setupTsPipeline=function(){var pipeline={};this.transmuxPipeline_=pipeline,pipeline.type="ts",pipeline.metadataStream=new m2ts.MetadataStream,pipeline.packetStream=new m2ts.TransportPacketStream,pipeline.parseStream=new m2ts.TransportParseStream,pipeline.elementaryStream=new m2ts.ElementaryStream,pipeline.timestampRolloverStream=new m2ts.TimestampRolloverStream,pipeline.adtsStream=new AdtsStream,pipeline.h264Stream=new H264Stream,pipeline.captionStream=new m2ts.CaptionStream(options),pipeline.coalesceStream=new CoalesceStream(options,pipeline.metadataStream),pipeline.headOfPipeline=pipeline.packetStream,pipeline.packetStream.pipe(pipeline.parseStream).pipe(pipeline.elementaryStream).pipe(pipeline.timestampRolloverStream),pipeline.timestampRolloverStream.pipe(pipeline.h264Stream),pipeline.timestampRolloverStream.pipe(pipeline.adtsStream),pipeline.timestampRolloverStream.pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream),pipeline.h264Stream.pipe(pipeline.captionStream).pipe(pipeline.coalesceStream),pipeline.elementaryStream.on("data",(function(data){var i;if("metadata"===data.type){for(i=data.tracks.length;i--;)videoTrack||"video"!==data.tracks[i].type?audioTrack||"audio"!==data.tracks[i].type||((audioTrack=data.tracks[i]).timelineStartInfo.baseMediaDecodeTime=self.baseMediaDecodeTime):(videoTrack=data.tracks[i]).timelineStartInfo.baseMediaDecodeTime=self.baseMediaDecodeTime;videoTrack&&!pipeline.videoSegmentStream&&(pipeline.coalesceStream.numberOfTracks++,pipeline.videoSegmentStream=new VideoSegmentStream(videoTrack,options),pipeline.videoSegmentStream.on("log",self.getLogTrigger_("videoSegmentStream")),pipeline.videoSegmentStream.on("timelineStartInfo",(function(timelineStartInfo){audioTrack&&!options.keepOriginalTimestamps&&(audioTrack.timelineStartInfo=timelineStartInfo,pipeline.audioSegmentStream.setEarliestDts(timelineStartInfo.dts-self.baseMediaDecodeTime))})),pipeline.videoSegmentStream.on("processedGopsInfo",self.trigger.bind(self,"gopInfo")),pipeline.videoSegmentStream.on("segmentTimingInfo",self.trigger.bind(self,"videoSegmentTimingInfo")),pipeline.videoSegmentStream.on("baseMediaDecodeTime",(function(baseMediaDecodeTime){audioTrack&&pipeline.audioSegmentStream.setVideoBaseMediaDecodeTime(baseMediaDecodeTime)})),pipeline.videoSegmentStream.on("timingInfo",self.trigger.bind(self,"videoTimingInfo")),pipeline.h264Stream.pipe(pipeline.videoSegmentStream).pipe(pipeline.coalesceStream)),audioTrack&&!pipeline.audioSegmentStream&&(pipeline.coalesceStream.numberOfTracks++,pipeline.audioSegmentStream=new AudioSegmentStream(audioTrack,options),pipeline.audioSegmentStream.on("log",self.getLogTrigger_("audioSegmentStream")),pipeline.audioSegmentStream.on("timingInfo",self.trigger.bind(self,"audioTimingInfo")),pipeline.audioSegmentStream.on("segmentTimingInfo",self.trigger.bind(self,"audioSegmentTimingInfo")),pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream)),self.trigger("trackinfo",{hasAudio:!!audioTrack,hasVideo:!!videoTrack})}})),pipeline.coalesceStream.on("data",this.trigger.bind(this,"data")),pipeline.coalesceStream.on("id3Frame",(function(id3Frame){id3Frame.dispatchType=pipeline.metadataStream.dispatchType,self.trigger("id3Frame",id3Frame)})),pipeline.coalesceStream.on("caption",this.trigger.bind(this,"caption")),pipeline.coalesceStream.on("done",this.trigger.bind(this,"done")),addPipelineLogRetriggers(this,pipeline)},this.setBaseMediaDecodeTime=function(baseMediaDecodeTime){var pipeline=this.transmuxPipeline_;options.keepOriginalTimestamps||(this.baseMediaDecodeTime=baseMediaDecodeTime),audioTrack&&(audioTrack.timelineStartInfo.dts=void 0,audioTrack.timelineStartInfo.pts=void 0,trackDecodeInfo.clearDtsInfo(audioTrack),pipeline.audioTimestampRolloverStream&&pipeline.audioTimestampRolloverStream.discontinuity()),videoTrack&&(pipeline.videoSegmentStream&&(pipeline.videoSegmentStream.gopCache_=[]),videoTrack.timelineStartInfo.dts=void 0,videoTrack.timelineStartInfo.pts=void 0,trackDecodeInfo.clearDtsInfo(videoTrack),pipeline.captionStream.reset()),pipeline.timestampRolloverStream&&pipeline.timestampRolloverStream.discontinuity()},this.setAudioAppendStart=function(timestamp){audioTrack&&this.transmuxPipeline_.audioSegmentStream.setAudioAppendStart(timestamp)},this.setRemux=function(val){var pipeline=this.transmuxPipeline_;options.remux=val,pipeline&&pipeline.coalesceStream&&pipeline.coalesceStream.setRemux(val)},this.alignGopsWith=function(gopsToAlignWith){videoTrack&&this.transmuxPipeline_.videoSegmentStream&&this.transmuxPipeline_.videoSegmentStream.alignGopsWith(gopsToAlignWith)},this.getLogTrigger_=function(key){var self=this;return function(event){event.stream=key,self.trigger("log",event)}},this.push=function(data){if(hasFlushed){var isAac=isLikelyAacData(data);isAac&&"aac"!==this.transmuxPipeline_.type?this.setupAacPipeline():isAac||"ts"===this.transmuxPipeline_.type||this.setupTsPipeline(),hasFlushed=!1}this.transmuxPipeline_.headOfPipeline.push(data)},this.flush=function(){hasFlushed=!0,this.transmuxPipeline_.headOfPipeline.flush()},this.endTimeline=function(){this.transmuxPipeline_.headOfPipeline.endTimeline()},this.reset=function(){this.transmuxPipeline_.headOfPipeline&&this.transmuxPipeline_.headOfPipeline.reset()},this.resetCaptions=function(){this.transmuxPipeline_.captionStream&&this.transmuxPipeline_.captionStream.reset()}}).prototype=new Stream;var win,startTime,getTracks,getTimescaleFromMediaHeader,getEmsgID3,transmuxer={Transmuxer:Transmuxer,VideoSegmentStream:VideoSegmentStream,AudioSegmentStream:AudioSegmentStream,AUDIO_PROPERTIES:AUDIO_PROPERTIES,VIDEO_PROPERTIES:VIDEO_PROPERTIES,generateSegmentTimingInfo:generateSegmentTimingInfo},bin_toUnsigned=function(value){return value>>>0},parseType_1=function(buffer){var result="";return result+=String.fromCharCode(buffer[0]),result+=String.fromCharCode(buffer[1]),result+=String.fromCharCode(buffer[2]),result+=String.fromCharCode(buffer[3])},toUnsigned$2=bin_toUnsigned,parseType$2=parseType_1,findBox$2=function(data,path){var i,size,type,end,subresults,results=[];if(!path.length)return null;for(i=0;i<data.byteLength;)size=toUnsigned$2(data[i]<<24|data[i+1]<<16|data[i+2]<<8|data[i+3]),type=parseType$2(data.subarray(i+4,i+8)),end=size>1?i+size:data.byteLength,type===path[0]&&(1===path.length?results.push(data.subarray(i+8,end)):(subresults=findBox$2(data.subarray(i+8,end),path.slice(1))).length&&(results=results.concat(subresults))),i=end;return results},toUnsigned$1=bin_toUnsigned,getUint64$2=numbers.getUint64,parseTfdt$2=function(data){var result={version:data[0],flags:new Uint8Array(data.subarray(1,4))};return 1===result.version?result.baseMediaDecodeTime=getUint64$2(data.subarray(4)):result.baseMediaDecodeTime=toUnsigned$1(data[4]<<24|data[5]<<16|data[6]<<8|data[7]),result},parseSampleFlags=function(flags){return{isLeading:(12&flags[0])>>>2,dependsOn:3&flags[0],isDependedOn:(192&flags[1])>>>6,hasRedundancy:(48&flags[1])>>>4,paddingValue:(14&flags[1])>>>1,isNonSyncSample:1&flags[1],degradationPriority:flags[2]<<8|flags[3]}},parseTrun$2=function(data){var sample,result={version:data[0],flags:new Uint8Array(data.subarray(1,4)),samples:[]},view=new DataView(data.buffer,data.byteOffset,data.byteLength),dataOffsetPresent=1&result.flags[2],firstSampleFlagsPresent=4&result.flags[2],sampleDurationPresent=1&result.flags[1],sampleSizePresent=2&result.flags[1],sampleFlagsPresent=4&result.flags[1],sampleCompositionTimeOffsetPresent=8&result.flags[1],sampleCount=view.getUint32(4),offset=8;for(dataOffsetPresent&&(result.dataOffset=view.getInt32(offset),offset+=4),firstSampleFlagsPresent&&sampleCount&&(sample={flags:parseSampleFlags(data.subarray(offset,offset+4))},offset+=4,sampleDurationPresent&&(sample.duration=view.getUint32(offset),offset+=4),sampleSizePresent&&(sample.size=view.getUint32(offset),offset+=4),sampleCompositionTimeOffsetPresent&&(1===result.version?sample.compositionTimeOffset=view.getInt32(offset):sample.compositionTimeOffset=view.getUint32(offset),offset+=4),result.samples.push(sample),sampleCount--);sampleCount--;)sample={},sampleDurationPresent&&(sample.duration=view.getUint32(offset),offset+=4),sampleSizePresent&&(sample.size=view.getUint32(offset),offset+=4),sampleFlagsPresent&&(sample.flags=parseSampleFlags(data.subarray(offset,offset+4)),offset+=4),sampleCompositionTimeOffsetPresent&&(1===result.version?sample.compositionTimeOffset=view.getInt32(offset):sample.compositionTimeOffset=view.getUint32(offset),offset+=4),result.samples.push(sample);return result},parseTfhd$2=function(data){var i,view=new DataView(data.buffer,data.byteOffset,data.byteLength),result={version:data[0],flags:new Uint8Array(data.subarray(1,4)),trackId:view.getUint32(4)},baseDataOffsetPresent=1&result.flags[2],sampleDescriptionIndexPresent=2&result.flags[2],defaultSampleDurationPresent=8&result.flags[2],defaultSampleSizePresent=16&result.flags[2],defaultSampleFlagsPresent=32&result.flags[2],durationIsEmpty=65536&result.flags[0],defaultBaseIsMoof=131072&result.flags[0];return i=8,baseDataOffsetPresent&&(i+=4,result.baseDataOffset=view.getUint32(12),i+=4),sampleDescriptionIndexPresent&&(result.sampleDescriptionIndex=view.getUint32(i),i+=4),defaultSampleDurationPresent&&(result.defaultSampleDuration=view.getUint32(i),i+=4),defaultSampleSizePresent&&(result.defaultSampleSize=view.getUint32(i),i+=4),defaultSampleFlagsPresent&&(result.defaultSampleFlags=view.getUint32(i)),durationIsEmpty&&(result.durationIsEmpty=!0),!baseDataOffsetPresent&&defaultBaseIsMoof&&(result.baseDataOffsetIsMoof=!0),result},discardEmulationPreventionBytes=(win="undefined"!=typeof window?window:void 0!==commonjsGlobal?commonjsGlobal:"undefined"!=typeof self?self:{},captionPacketParser.discardEmulationPreventionBytes),CaptionStream=captionStream.CaptionStream,findBox$1=findBox$2,parseTfdt$1=parseTfdt$2,parseTrun$1=parseTrun$2,parseTfhd$1=parseTfhd$2,window$2=win,mapToSample=function(offset,samples){for(var approximateOffset=offset,i=0;i<samples.length;i++){var sample=samples[i];if(approximateOffset<sample.size)return sample;approximateOffset-=sample.size}return null},parseCaptionNals=function(segment,videoTrackId){var trafs=findBox$1(segment,["moof","traf"]),mdats=findBox$1(segment,["mdat"]),captionNals={},mdatTrafPairs=[];return mdats.forEach((function(mdat,index){var matchingTraf=trafs[index];mdatTrafPairs.push({mdat:mdat,traf:matchingTraf})})),mdatTrafPairs.forEach((function(pair){var samples,result,mdat=pair.mdat,traf=pair.traf,tfhd=findBox$1(traf,["tfhd"]),headerInfo=parseTfhd$1(tfhd[0]),trackId=headerInfo.trackId,tfdt=findBox$1(traf,["tfdt"]),baseMediaDecodeTime=tfdt.length>0?parseTfdt$1(tfdt[0]).baseMediaDecodeTime:0,truns=findBox$1(traf,["trun"]);videoTrackId===trackId&&truns.length>0&&(samples=function(truns,baseMediaDecodeTime,tfhd){var currentDts=baseMediaDecodeTime,defaultSampleDuration=tfhd.defaultSampleDuration||0,defaultSampleSize=tfhd.defaultSampleSize||0,trackId=tfhd.trackId,allSamples=[];return truns.forEach((function(trun){var samples=parseTrun$1(trun).samples;samples.forEach((function(sample){void 0===sample.duration&&(sample.duration=defaultSampleDuration),void 0===sample.size&&(sample.size=defaultSampleSize),sample.trackId=trackId,sample.dts=currentDts,void 0===sample.compositionTimeOffset&&(sample.compositionTimeOffset=0),"bigint"==typeof currentDts?(sample.pts=currentDts+window$2.BigInt(sample.compositionTimeOffset),currentDts+=window$2.BigInt(sample.duration)):(sample.pts=currentDts+sample.compositionTimeOffset,currentDts+=sample.duration)})),allSamples=allSamples.concat(samples)})),allSamples}(truns,baseMediaDecodeTime,headerInfo),result=function(avcStream,samples,trackId){var seiNal,i,length,lastMatchedSample,avcView=new DataView(avcStream.buffer,avcStream.byteOffset,avcStream.byteLength),result={logs:[],seiNals:[]};for(i=0;i+4<avcStream.length;i+=length)if(length=avcView.getUint32(i),i+=4,!(length<=0))switch(31&avcStream[i]){case 6:var data=avcStream.subarray(i+1,i+1+length),matchingSample=mapToSample(i,samples);if(seiNal={nalUnitType:"sei_rbsp",size:length,data:data,escapedRBSP:discardEmulationPreventionBytes(data),trackId:trackId},matchingSample)seiNal.pts=matchingSample.pts,seiNal.dts=matchingSample.dts,lastMatchedSample=matchingSample;else{if(!lastMatchedSample){result.logs.push({level:"warn",message:"We've encountered a nal unit without data at "+i+" for trackId "+trackId+". See mux.js#223."});break}seiNal.pts=lastMatchedSample.pts,seiNal.dts=lastMatchedSample.dts}result.seiNals.push(seiNal)}return result}(mdat,samples,trackId),captionNals[trackId]||(captionNals[trackId]={seiNals:[],logs:[]}),captionNals[trackId].seiNals=captionNals[trackId].seiNals.concat(result.seiNals),captionNals[trackId].logs=captionNals[trackId].logs.concat(result.logs))})),captionNals},captionParser=function(){var captionStream,segmentCache,trackId,timescale,parsedCaptions,parsingPartial,isInitialized=!1;this.isInitialized=function(){return isInitialized},this.init=function(options){captionStream=new CaptionStream,isInitialized=!0,parsingPartial=!!options&&options.isPartial,captionStream.on("data",(function(event){event.startTime=event.startPts/timescale,event.endTime=event.endPts/timescale,parsedCaptions.captions.push(event),parsedCaptions.captionStreams[event.stream]=!0})),captionStream.on("log",(function(log){parsedCaptions.logs.push(log)}))},this.isNewInit=function(videoTrackIds,timescales){return!(videoTrackIds&&0===videoTrackIds.length||timescales&&"object"==typeof timescales&&0===Object.keys(timescales).length)&&(trackId!==videoTrackIds[0]||timescale!==timescales[trackId])},this.parse=function(segment,videoTrackIds,timescales){var parsedData;if(!this.isInitialized())return null;if(!videoTrackIds||!timescales)return null;if(this.isNewInit(videoTrackIds,timescales))trackId=videoTrackIds[0],timescale=timescales[trackId];else if(null===trackId||!timescale)return segmentCache.push(segment),null;for(;segmentCache.length>0;){var cachedSegment=segmentCache.shift();this.parse(cachedSegment,videoTrackIds,timescales)}return parsedData=function(segment,trackId,timescale){if(null===trackId)return null;var trackNals=parseCaptionNals(segment,trackId)[trackId]||{};return{seiNals:trackNals.seiNals,logs:trackNals.logs,timescale:timescale}}(segment,trackId,timescale),parsedData&&parsedData.logs&&(parsedCaptions.logs=parsedCaptions.logs.concat(parsedData.logs)),null!==parsedData&&parsedData.seiNals?(this.pushNals(parsedData.seiNals),this.flushStream(),parsedCaptions):parsedCaptions.logs.length?{logs:parsedCaptions.logs,captions:[],captionStreams:[]}:null},this.pushNals=function(nals){if(!this.isInitialized()||!nals||0===nals.length)return null;nals.forEach((function(nal){captionStream.push(nal)}))},this.flushStream=function(){if(!this.isInitialized())return null;parsingPartial?captionStream.partialFlush():captionStream.flush()},this.clearParsedCaptions=function(){parsedCaptions.captions=[],parsedCaptions.captionStreams={},parsedCaptions.logs=[]},this.resetCaptionStream=function(){if(!this.isInitialized())return null;captionStream.reset()},this.clearAllCaptions=function(){this.clearParsedCaptions(),this.resetCaptionStream()},this.reset=function(){segmentCache=[],trackId=null,timescale=null,parsedCaptions?this.clearParsedCaptions():parsedCaptions={captions:[],captionStreams:{},logs:[]},this.resetCaptionStream()},this.reset()},uint8ToCString=function(data){for(var index=0,curChar=String.fromCharCode(data[index]),retString="";"\0"!==curChar;)retString+=curChar,index++,curChar=String.fromCharCode(data[index]);return retString+=curChar},getUint64$1=numbers.getUint64,isValidEmsgBox=function(version,emsg){var hasScheme="\0"!==emsg.scheme_id_uri,isValidV0Box=0===version&&isDefined(emsg.presentation_time_delta)&&hasScheme,isValidV1Box=1===version&&isDefined(emsg.presentation_time)&&hasScheme;return!(version>1)&&isValidV0Box||isValidV1Box},isDefined=function(data){return void 0!==data||null!==data},emsg$1={parseEmsgBox:function(boxData){var scheme_id_uri,value,timescale,presentation_time,presentation_time_delta,event_duration,id,offset=4,version=boxData[0];if(0===version)offset+=(scheme_id_uri=uint8ToCString(boxData.subarray(offset))).length,offset+=(value=uint8ToCString(boxData.subarray(offset))).length,timescale=(dv=new DataView(boxData.buffer)).getUint32(offset),offset+=4,presentation_time_delta=dv.getUint32(offset),offset+=4,event_duration=dv.getUint32(offset),offset+=4,id=dv.getUint32(offset),offset+=4;else if(1===version){var dv;timescale=(dv=new DataView(boxData.buffer)).getUint32(offset),offset+=4,presentation_time=getUint64$1(boxData.subarray(offset)),offset+=8,event_duration=dv.getUint32(offset),offset+=4,id=dv.getUint32(offset),offset+=4,offset+=(scheme_id_uri=uint8ToCString(boxData.subarray(offset))).length,offset+=(value=uint8ToCString(boxData.subarray(offset))).length}var emsgBox={scheme_id_uri:scheme_id_uri,value:value,timescale:timescale||1,presentation_time:presentation_time,presentation_time_delta:presentation_time_delta,event_duration:event_duration,id:id,message_data:new Uint8Array(boxData.subarray(offset,boxData.byteLength))};return isValidEmsgBox(version,emsgBox)?emsgBox:void 0},scaleTime:function(presentationTime,timescale,timeDelta,offset){return presentationTime||0===presentationTime?presentationTime/timescale:offset+timeDelta/timescale}},toUnsigned=bin_toUnsigned,toHexString=function(value){return("00"+value.toString(16)).slice(-2)},findBox=findBox$2,parseType$1=parseType_1,emsg=emsg$1,parseTfhd=parseTfhd$2,parseTrun=parseTrun$2,parseTfdt=parseTfdt$2,getUint64=numbers.getUint64,window$1=win,parseId3Frames=parseId3.parseId3Frames;startTime=function(timescale,fragment){var lowestTime=findBox(fragment,["moof","traf"]).reduce((function(acc,traf){var baseTime,tfhd=findBox(traf,["tfhd"])[0],id=toUnsigned(tfhd[4]<<24|tfhd[5]<<16|tfhd[6]<<8|tfhd[7]),scale=timescale[id]||9e4,tfdt=findBox(traf,["tfdt"])[0],dv=new DataView(tfdt.buffer,tfdt.byteOffset,tfdt.byteLength);let seconds;return"bigint"==typeof(baseTime=1===tfdt[0]?getUint64(tfdt.subarray(4,12)):dv.getUint32(4))?seconds=baseTime/window$1.BigInt(scale):"number"!=typeof baseTime||isNaN(baseTime)||(seconds=baseTime/scale),seconds<Number.MAX_SAFE_INTEGER&&(seconds=Number(seconds)),seconds<acc&&(acc=seconds),acc}),1/0);return"bigint"==typeof lowestTime||isFinite(lowestTime)?lowestTime:0},getTimescaleFromMediaHeader=function(mdhd){var index=0===mdhd[0]?12:20;return toUnsigned(mdhd[index]<<24|mdhd[index+1]<<16|mdhd[index+2]<<8|mdhd[index+3])},getTracks=function(init){var traks=findBox(init,["moov","trak"]),tracks=[];return traks.forEach((function(trak){var view,tkhdVersion,track={},tkhd=findBox(trak,["tkhd"])[0];tkhd&&(tkhdVersion=(view=new DataView(tkhd.buffer,tkhd.byteOffset,tkhd.byteLength)).getUint8(0),track.id=0===tkhdVersion?view.getUint32(12):view.getUint32(20));var hdlr=findBox(trak,["mdia","hdlr"])[0];if(hdlr){var type=parseType$1(hdlr.subarray(8,12));track.type="vide"===type?"video":"soun"===type?"audio":type}var stsd=findBox(trak,["mdia","minf","stbl","stsd"])[0];if(stsd){var sampleDescriptions=stsd.subarray(8);track.codec=parseType$1(sampleDescriptions.subarray(4,8));var codecConfig,codecBox=findBox(sampleDescriptions,[track.codec])[0];codecBox&&(/^[asm]vc[1-9]$/i.test(track.codec)?(codecConfig=codecBox.subarray(78),"avcC"===parseType$1(codecConfig.subarray(4,8))&&codecConfig.length>11?(track.codec+=".",track.codec+=toHexString(codecConfig[9]),track.codec+=toHexString(codecConfig[10]),track.codec+=toHexString(codecConfig[11])):track.codec="avc1.4d400d"):/^mp4[a,v]$/i.test(track.codec)?(codecConfig=codecBox.subarray(28),"esds"===parseType$1(codecConfig.subarray(4,8))&&codecConfig.length>20&&0!==codecConfig[19]?(track.codec+="."+toHexString(codecConfig[19]),track.codec+="."+toHexString(codecConfig[20]>>>2&63).replace(/^0/,"")):track.codec="mp4a.40.2"):track.codec=track.codec.toLowerCase())}var mdhd=findBox(trak,["mdia","mdhd"])[0];mdhd&&(track.timescale=getTimescaleFromMediaHeader(mdhd)),tracks.push(track)})),tracks},getEmsgID3=function(segmentData){let offset=arguments.length>1&&void 0!==arguments[1]?arguments[1]:0;var emsgBoxes=findBox(segmentData,["emsg"]);return emsgBoxes.map((data=>{var parsedBox=emsg.parseEmsgBox(new Uint8Array(data)),parsedId3Frames=parseId3Frames(parsedBox.message_data);return{cueTime:emsg.scaleTime(parsedBox.presentation_time,parsedBox.timescale,parsedBox.presentation_time_delta,offset),duration:emsg.scaleTime(parsedBox.event_duration,parsedBox.timescale),frames:parsedId3Frames}}))};var probe$2_startTime=startTime,probe$2_tracks=getTracks,probe$2_getEmsgID3=getEmsgID3,StreamTypes$1=streamTypes,parsePid=function(packet){var pid=31&packet[1];return pid<<=8,pid|=packet[2]},parsePayloadUnitStartIndicator=function(packet){return!!(64&packet[1])},parseAdaptionField=function(packet){var offset=0;return(48&packet[3])>>>4>1&&(offset+=packet[4]+1),offset},parseNalUnitType=function(type){switch(type){case 5:return"slice_layer_without_partitioning_rbsp_idr";case 6:return"sei_rbsp";case 7:return"seq_parameter_set_rbsp";case 8:return"pic_parameter_set_rbsp";case 9:return"access_unit_delimiter_rbsp";default:return null}},probe$1={parseType:function(packet,pmtPid){var pid=parsePid(packet);return 0===pid?"pat":pid===pmtPid?"pmt":pmtPid?"pes":null},parsePat:function(packet){var pusi=parsePayloadUnitStartIndicator(packet),offset=4+parseAdaptionField(packet);return pusi&&(offset+=packet[offset]+1),(31&packet[offset+10])<<8|packet[offset+11]},parsePmt:function(packet){var programMapTable={},pusi=parsePayloadUnitStartIndicator(packet),payloadOffset=4+parseAdaptionField(packet);if(pusi&&(payloadOffset+=packet[payloadOffset]+1),1&packet[payloadOffset+5]){var tableEnd;tableEnd=3+((15&packet[payloadOffset+1])<<8|packet[payloadOffset+2])-4;for(var offset=12+((15&packet[payloadOffset+10])<<8|packet[payloadOffset+11]);offset<tableEnd;){var i=payloadOffset+offset;programMapTable[(31&packet[i+1])<<8|packet[i+2]]=packet[i],offset+=5+((15&packet[i+3])<<8|packet[i+4])}return programMapTable}},parsePayloadUnitStartIndicator:parsePayloadUnitStartIndicator,parsePesType:function(packet,programMapTable){switch(programMapTable[parsePid(packet)]){case StreamTypes$1.H264_STREAM_TYPE:return"video";case StreamTypes$1.ADTS_STREAM_TYPE:return"audio";case StreamTypes$1.METADATA_STREAM_TYPE:return"timed-metadata";default:return null}},parsePesTime:function(packet){if(!parsePayloadUnitStartIndicator(packet))return null;var offset=4+parseAdaptionField(packet);if(offset>=packet.byteLength)return null;var ptsDtsFlags,pes=null;return 192&(ptsDtsFlags=packet[offset+7])&&((pes={}).pts=(14&packet[offset+9])<<27|(255&packet[offset+10])<<20|(254&packet[offset+11])<<12|(255&packet[offset+12])<<5|(254&packet[offset+13])>>>3,pes.pts*=4,pes.pts+=(6&packet[offset+13])>>>1,pes.dts=pes.pts,64&ptsDtsFlags&&(pes.dts=(14&packet[offset+14])<<27|(255&packet[offset+15])<<20|(254&packet[offset+16])<<12|(255&packet[offset+17])<<5|(254&packet[offset+18])>>>3,pes.dts*=4,pes.dts+=(6&packet[offset+18])>>>1)),pes},videoPacketContainsKeyFrame:function(packet){for(var offset=4+parseAdaptionField(packet),frameBuffer=packet.subarray(offset),frameI=0,frameSyncPoint=0,foundKeyFrame=!1;frameSyncPoint<frameBuffer.byteLength-3;frameSyncPoint++)if(1===frameBuffer[frameSyncPoint+2]){frameI=frameSyncPoint+5;break}for(;frameI<frameBuffer.byteLength;)switch(frameBuffer[frameI]){case 0:if(0!==frameBuffer[frameI-1]){frameI+=2;break}if(0!==frameBuffer[frameI-2]){frameI++;break}frameSyncPoint+3!==frameI-2&&"slice_layer_without_partitioning_rbsp_idr"===parseNalUnitType(31&frameBuffer[frameSyncPoint+3])&&(foundKeyFrame=!0);do{frameI++}while(1!==frameBuffer[frameI]&&frameI<frameBuffer.length);frameSyncPoint=frameI-2,frameI+=3;break;case 1:if(0!==frameBuffer[frameI-1]||0!==frameBuffer[frameI-2]){frameI+=3;break}"slice_layer_without_partitioning_rbsp_idr"===parseNalUnitType(31&frameBuffer[frameSyncPoint+3])&&(foundKeyFrame=!0),frameSyncPoint=frameI-2,frameI+=3;break;default:frameI+=3}return frameBuffer=frameBuffer.subarray(frameSyncPoint),frameI-=frameSyncPoint,frameSyncPoint=0,frameBuffer&&frameBuffer.byteLength>3&&"slice_layer_without_partitioning_rbsp_idr"===parseNalUnitType(31&frameBuffer[frameSyncPoint+3])&&(foundKeyFrame=!0),foundKeyFrame}},StreamTypes=streamTypes,handleRollover=timestampRolloverStream.handleRollover,probe={};probe.ts=probe$1,probe.aac=utils;var ONE_SECOND_IN_TS=clock$2.ONE_SECOND_IN_TS,parseAudioPes_=function(bytes,pmt,result){for(var packet,pesType,pusi,parsed,startIndex=0,endIndex=188,endLoop=!1;endIndex<=bytes.byteLength;)if(71!==bytes[startIndex]||71!==bytes[endIndex]&&endIndex!==bytes.byteLength)startIndex++,endIndex++;else{if(packet=bytes.subarray(startIndex,endIndex),"pes"===probe.ts.parseType(packet,pmt.pid))pesType=probe.ts.parsePesType(packet,pmt.table),pusi=probe.ts.parsePayloadUnitStartIndicator(packet),"audio"===pesType&&pusi&&(parsed=probe.ts.parsePesTime(packet))&&(parsed.type="audio",result.audio.push(parsed),endLoop=!0);if(endLoop)break;startIndex+=188,endIndex+=188}for(startIndex=(endIndex=bytes.byteLength)-188,endLoop=!1;startIndex>=0;)if(71!==bytes[startIndex]||71!==bytes[endIndex]&&endIndex!==bytes.byteLength)startIndex--,endIndex--;else{if(packet=bytes.subarray(startIndex,endIndex),"pes"===probe.ts.parseType(packet,pmt.pid))pesType=probe.ts.parsePesType(packet,pmt.table),pusi=probe.ts.parsePayloadUnitStartIndicator(packet),"audio"===pesType&&pusi&&(parsed=probe.ts.parsePesTime(packet))&&(parsed.type="audio",result.audio.push(parsed),endLoop=!0);if(endLoop)break;startIndex-=188,endIndex-=188}},parseVideoPes_=function(bytes,pmt,result){for(var packet,pesType,pusi,parsed,frame,i,pes,startIndex=0,endIndex=188,endLoop=!1,currentFrame={data:[],size:0};endIndex<bytes.byteLength;)if(71!==bytes[startIndex]||71!==bytes[endIndex])startIndex++,endIndex++;else{if(packet=bytes.subarray(startIndex,endIndex),"pes"===probe.ts.parseType(packet,pmt.pid))if(pesType=probe.ts.parsePesType(packet,pmt.table),pusi=probe.ts.parsePayloadUnitStartIndicator(packet),"video"===pesType&&(pusi&&!endLoop&&(parsed=probe.ts.parsePesTime(packet))&&(parsed.type="video",result.video.push(parsed),endLoop=!0),!result.firstKeyFrame)){if(pusi&&0!==currentFrame.size){for(frame=new Uint8Array(currentFrame.size),i=0;currentFrame.data.length;)pes=currentFrame.data.shift(),frame.set(pes,i),i+=pes.byteLength;if(probe.ts.videoPacketContainsKeyFrame(frame)){var firstKeyFrame=probe.ts.parsePesTime(frame);firstKeyFrame?(result.firstKeyFrame=firstKeyFrame,result.firstKeyFrame.type="video"):console.warn("Failed to extract PTS/DTS from PES at first keyframe. This could be an unusual TS segment, or else mux.js did not parse your TS segment correctly. If you know your TS segments do contain PTS/DTS on keyframes please file a bug report! You can try ffprobe to double check for yourself.")}currentFrame.size=0}currentFrame.data.push(packet),currentFrame.size+=packet.byteLength}if(endLoop&&result.firstKeyFrame)break;startIndex+=188,endIndex+=188}for(startIndex=(endIndex=bytes.byteLength)-188,endLoop=!1;startIndex>=0;)if(71!==bytes[startIndex]||71!==bytes[endIndex])startIndex--,endIndex--;else{if(packet=bytes.subarray(startIndex,endIndex),"pes"===probe.ts.parseType(packet,pmt.pid))pesType=probe.ts.parsePesType(packet,pmt.table),pusi=probe.ts.parsePayloadUnitStartIndicator(packet),"video"===pesType&&pusi&&(parsed=probe.ts.parsePesTime(packet))&&(parsed.type="video",result.video.push(parsed),endLoop=!0);if(endLoop)break;startIndex-=188,endIndex-=188}},inspectTs_=function(bytes){var pmt={pid:null,table:null},result={};for(var pid in function(bytes,pmt){for(var packet,startIndex=0,endIndex=188;endIndex<bytes.byteLength;)if(71!==bytes[startIndex]||71!==bytes[endIndex])startIndex++,endIndex++;else{switch(packet=bytes.subarray(startIndex,endIndex),probe.ts.parseType(packet,pmt.pid)){case"pat":pmt.pid=probe.ts.parsePat(packet);break;case"pmt":var table=probe.ts.parsePmt(packet);pmt.table=pmt.table||{},Object.keys(table).forEach((function(key){pmt.table[key]=table[key]}))}startIndex+=188,endIndex+=188}}(bytes,pmt),pmt.table){if(pmt.table.hasOwnProperty(pid))switch(pmt.table[pid]){case StreamTypes.H264_STREAM_TYPE:result.video=[],parseVideoPes_(bytes,pmt,result),0===result.video.length&&delete result.video;break;case StreamTypes.ADTS_STREAM_TYPE:result.audio=[],parseAudioPes_(bytes,pmt,result),0===result.audio.length&&delete result.audio}}return result},tsInspector_inspect=function(bytes,baseTimestamp){var result;return result=probe.aac.isLikelyAacData(bytes)?function(bytes){for(var packet,endLoop=!1,audioCount=0,sampleRate=null,timestamp=null,frameSize=0,byteIndex=0;bytes.length-byteIndex>=3;){switch(probe.aac.parseType(bytes,byteIndex)){case"timed-metadata":if(bytes.length-byteIndex<10){endLoop=!0;break}if((frameSize=probe.aac.parseId3TagSize(bytes,byteIndex))>bytes.length){endLoop=!0;break}null===timestamp&&(packet=bytes.subarray(byteIndex,byteIndex+frameSize),timestamp=probe.aac.parseAacTimestamp(packet)),byteIndex+=frameSize;break;case"audio":if(bytes.length-byteIndex<7){endLoop=!0;break}if((frameSize=probe.aac.parseAdtsSize(bytes,byteIndex))>bytes.length){endLoop=!0;break}null===sampleRate&&(packet=bytes.subarray(byteIndex,byteIndex+frameSize),sampleRate=probe.aac.parseSampleRate(packet)),audioCount++,byteIndex+=frameSize;break;default:byteIndex++}if(endLoop)return null}if(null===sampleRate||null===timestamp)return null;var audioTimescale=ONE_SECOND_IN_TS/sampleRate;return{audio:[{type:"audio",dts:timestamp,pts:timestamp},{type:"audio",dts:timestamp+1024*audioCount*audioTimescale,pts:timestamp+1024*audioCount*audioTimescale}]}}(bytes):inspectTs_(bytes),result&&(result.audio||result.video)?(function(segmentInfo,baseTimestamp){if(segmentInfo.audio&&segmentInfo.audio.length){var audioBaseTimestamp=baseTimestamp;(void 0===audioBaseTimestamp||isNaN(audioBaseTimestamp))&&(audioBaseTimestamp=segmentInfo.audio[0].dts),segmentInfo.audio.forEach((function(info){info.dts=handleRollover(info.dts,audioBaseTimestamp),info.pts=handleRollover(info.pts,audioBaseTimestamp),info.dtsTime=info.dts/ONE_SECOND_IN_TS,info.ptsTime=info.pts/ONE_SECOND_IN_TS}))}if(segmentInfo.video&&segmentInfo.video.length){var videoBaseTimestamp=baseTimestamp;if((void 0===videoBaseTimestamp||isNaN(videoBaseTimestamp))&&(videoBaseTimestamp=segmentInfo.video[0].dts),segmentInfo.video.forEach((function(info){info.dts=handleRollover(info.dts,videoBaseTimestamp),info.pts=handleRollover(info.pts,videoBaseTimestamp),info.dtsTime=info.dts/ONE_SECOND_IN_TS,info.ptsTime=info.pts/ONE_SECOND_IN_TS})),segmentInfo.firstKeyFrame){var frame=segmentInfo.firstKeyFrame;frame.dts=handleRollover(frame.dts,videoBaseTimestamp),frame.pts=handleRollover(frame.pts,videoBaseTimestamp),frame.dtsTime=frame.dts/ONE_SECOND_IN_TS,frame.ptsTime=frame.pts/ONE_SECOND_IN_TS}}}(result,baseTimestamp),result):null};class MessageHandlers{constructor(self,options){this.options=options||{},this.self=self,this.init()}init(){this.transmuxer&&this.transmuxer.dispose(),this.transmuxer=new transmuxer.Transmuxer(this.options),function(self,transmuxer){transmuxer.on("data",(function(segment){const initArray=segment.initSegment;segment.initSegment={data:initArray.buffer,byteOffset:initArray.byteOffset,byteLength:initArray.byteLength};const typedArray=segment.data;segment.data=typedArray.buffer,self.postMessage({action:"data",segment:segment,byteOffset:typedArray.byteOffset,byteLength:typedArray.byteLength},[segment.data])})),transmuxer.on("done",(function(data){self.postMessage({action:"done"})})),transmuxer.on("gopInfo",(function(gopInfo){self.postMessage({action:"gopInfo",gopInfo:gopInfo})})),transmuxer.on("videoSegmentTimingInfo",(function(timingInfo){const videoSegmentTimingInfo={start:{decode:clock$2.videoTsToSeconds(timingInfo.start.dts),presentation:clock$2.videoTsToSeconds(timingInfo.start.pts)},end:{decode:clock$2.videoTsToSeconds(timingInfo.end.dts),presentation:clock$2.videoTsToSeconds(timingInfo.end.pts)},baseMediaDecodeTime:clock$2.videoTsToSeconds(timingInfo.baseMediaDecodeTime)};timingInfo.prependedContentDuration&&(videoSegmentTimingInfo.prependedContentDuration=clock$2.videoTsToSeconds(timingInfo.prependedContentDuration)),self.postMessage({action:"videoSegmentTimingInfo",videoSegmentTimingInfo:videoSegmentTimingInfo})})),transmuxer.on("audioSegmentTimingInfo",(function(timingInfo){const audioSegmentTimingInfo={start:{decode:clock$2.videoTsToSeconds(timingInfo.start.dts),presentation:clock$2.videoTsToSeconds(timingInfo.start.pts)},end:{decode:clock$2.videoTsToSeconds(timingInfo.end.dts),presentation:clock$2.videoTsToSeconds(timingInfo.end.pts)},baseMediaDecodeTime:clock$2.videoTsToSeconds(timingInfo.baseMediaDecodeTime)};timingInfo.prependedContentDuration&&(audioSegmentTimingInfo.prependedContentDuration=clock$2.videoTsToSeconds(timingInfo.prependedContentDuration)),self.postMessage({action:"audioSegmentTimingInfo",audioSegmentTimingInfo:audioSegmentTimingInfo})})),transmuxer.on("id3Frame",(function(id3Frame){self.postMessage({action:"id3Frame",id3Frame:id3Frame})})),transmuxer.on("caption",(function(caption){self.postMessage({action:"caption",caption:caption})})),transmuxer.on("trackinfo",(function(trackInfo){self.postMessage({action:"trackinfo",trackInfo:trackInfo})})),transmuxer.on("audioTimingInfo",(function(audioTimingInfo){self.postMessage({action:"audioTimingInfo",audioTimingInfo:{start:clock$2.videoTsToSeconds(audioTimingInfo.start),end:clock$2.videoTsToSeconds(audioTimingInfo.end)}})})),transmuxer.on("videoTimingInfo",(function(videoTimingInfo){self.postMessage({action:"videoTimingInfo",videoTimingInfo:{start:clock$2.videoTsToSeconds(videoTimingInfo.start),end:clock$2.videoTsToSeconds(videoTimingInfo.end)}})})),transmuxer.on("log",(function(log){self.postMessage({action:"log",log:log})}))}(this.self,this.transmuxer)}pushMp4Captions(data){this.captionParser||(this.captionParser=new captionParser,this.captionParser.init());const segment=new Uint8Array(data.data,data.byteOffset,data.byteLength),parsed=this.captionParser.parse(segment,data.trackIds,data.timescales);this.self.postMessage({action:"mp4Captions",captions:parsed&&parsed.captions||[],logs:parsed&&parsed.logs||[],data:segment.buffer},[segment.buffer])}probeMp4StartTime(_ref43){let{timescales:timescales,data:data}=_ref43;const startTime=probe$2_startTime(timescales,data);this.self.postMessage({action:"probeMp4StartTime",startTime:startTime,data:data},[data.buffer])}probeMp4Tracks(_ref44){let{data:data}=_ref44;const tracks=probe$2_tracks(data);this.self.postMessage({action:"probeMp4Tracks",tracks:tracks,data:data},[data.buffer])}probeEmsgID3(_ref45){let{data:data,offset:offset}=_ref45;const id3Frames=probe$2_getEmsgID3(data,offset);this.self.postMessage({action:"probeEmsgID3",id3Frames:id3Frames,emsgData:data},[data.buffer])}probeTs(_ref46){let{data:data,baseStartTime:baseStartTime}=_ref46;const tsStartTime="number"!=typeof baseStartTime||isNaN(baseStartTime)?void 0:baseStartTime*clock$2.ONE_SECOND_IN_TS,timeInfo=tsInspector_inspect(data,tsStartTime);let result=null;timeInfo&&(result={hasVideo:timeInfo.video&&2===timeInfo.video.length||!1,hasAudio:timeInfo.audio&&2===timeInfo.audio.length||!1},result.hasVideo&&(result.videoStart=timeInfo.video[0].ptsTime),result.hasAudio&&(result.audioStart=timeInfo.audio[0].ptsTime)),this.self.postMessage({action:"probeTs",result:result,data:data},[data.buffer])}clearAllMp4Captions(){this.captionParser&&this.captionParser.clearAllCaptions()}clearParsedMp4Captions(){this.captionParser&&this.captionParser.clearParsedCaptions()}push(data){const segment=new Uint8Array(data.data,data.byteOffset,data.byteLength);this.transmuxer.push(segment)}reset(){this.transmuxer.reset()}setTimestampOffset(data){const timestampOffset=data.timestampOffset||0;this.transmuxer.setBaseMediaDecodeTime(Math.round(clock$2.secondsToVideoTs(timestampOffset)))}setAudioAppendStart(data){this.transmuxer.setAudioAppendStart(Math.ceil(clock$2.secondsToVideoTs(data.appendStart)))}setRemux(data){this.transmuxer.setRemux(data.remux)}flush(data){this.transmuxer.flush(),self.postMessage({action:"done",type:"transmuxed"})}endTimeline(){this.transmuxer.endTimeline(),self.postMessage({action:"endedtimeline",type:"transmuxed"})}alignGopsWith(data){this.transmuxer.alignGopsWith(data.gopsToAlignWith.slice())}}self.onmessage=function(event){"init"===event.data.action&&event.data.options?this.messageHandlers=new MessageHandlers(self,event.data.options):(this.messageHandlers||(this.messageHandlers=new MessageHandlers(self)),event.data&&event.data.action&&"init"!==event.data.action&&this.messageHandlers[event.data.action]&&this.messageHandlers[event.data.action](event.data))}})));var TransmuxWorker=factory(workerCode$1);const processTransmux=options=>{const{transmuxer:transmuxer,bytes:bytes,audioAppendStart:audioAppendStart,gopsToAlignWith:gopsToAlignWith,remux:remux,onData:onData,onTrackInfo:onTrackInfo,onAudioTimingInfo:onAudioTimingInfo,onVideoTimingInfo:onVideoTimingInfo,onVideoSegmentTimingInfo:onVideoSegmentTimingInfo,onAudioSegmentTimingInfo:onAudioSegmentTimingInfo,onId3:onId3,onCaptions:onCaptions,onDone:onDone,onEndedTimeline:onEndedTimeline,onTransmuxerLog:onTransmuxerLog,isEndOfTimeline:isEndOfTimeline}=options,transmuxedData={buffer:[]};let waitForEndedTimelineEvent=isEndOfTimeline;if(transmuxer.onmessage=event=>{transmuxer.currentTransmux===options&&("data"===event.data.action&&((event,transmuxedData,callback)=>{const{type:type,initSegment:initSegment,captions:captions,captionStreams:captionStreams,metadata:metadata,videoFrameDtsTime:videoFrameDtsTime,videoFramePtsTime:videoFramePtsTime}=event.data.segment;transmuxedData.buffer.push({captions:captions,captionStreams:captionStreams,metadata:metadata});const boxes=event.data.segment.boxes||{data:event.data.segment.data},result={type:type,data:new Uint8Array(boxes.data,boxes.data.byteOffset,boxes.data.byteLength),initSegment:new Uint8Array(initSegment.data,initSegment.byteOffset,initSegment.byteLength)};void 0!==videoFrameDtsTime&&(result.videoFrameDtsTime=videoFrameDtsTime),void 0!==videoFramePtsTime&&(result.videoFramePtsTime=videoFramePtsTime),callback(result)})(event,transmuxedData,onData),"trackinfo"===event.data.action&&onTrackInfo(event.data.trackInfo),"gopInfo"===event.data.action&&((event,transmuxedData)=>{transmuxedData.gopInfo=event.data.gopInfo})(event,transmuxedData),"audioTimingInfo"===event.data.action&&onAudioTimingInfo(event.data.audioTimingInfo),"videoTimingInfo"===event.data.action&&onVideoTimingInfo(event.data.videoTimingInfo),"videoSegmentTimingInfo"===event.data.action&&onVideoSegmentTimingInfo(event.data.videoSegmentTimingInfo),"audioSegmentTimingInfo"===event.data.action&&onAudioSegmentTimingInfo(event.data.audioSegmentTimingInfo),"id3Frame"===event.data.action&&onId3([event.data.id3Frame],event.data.id3Frame.dispatchType),"caption"===event.data.action&&onCaptions(event.data.caption),"endedtimeline"===event.data.action&&(waitForEndedTimelineEvent=!1,onEndedTimeline()),"log"===event.data.action&&onTransmuxerLog(event.data.log),"transmuxed"===event.data.type&&(waitForEndedTimelineEvent||(transmuxer.onmessage=null,(_ref47=>{let{transmuxedData:transmuxedData,callback:callback}=_ref47;transmuxedData.buffer=[],callback(transmuxedData)})({transmuxedData:transmuxedData,callback:onDone}),dequeue(transmuxer))))},audioAppendStart&&transmuxer.postMessage({action:"setAudioAppendStart",appendStart:audioAppendStart}),Array.isArray(gopsToAlignWith)&&transmuxer.postMessage({action:"alignGopsWith",gopsToAlignWith:gopsToAlignWith}),void 0!==remux&&transmuxer.postMessage({action:"setRemux",remux:remux}),bytes.byteLength){const buffer=bytes instanceof ArrayBuffer?bytes:bytes.buffer,byteOffset=bytes instanceof ArrayBuffer?0:bytes.byteOffset;transmuxer.postMessage({action:"push",data:buffer,byteOffset:byteOffset,byteLength:bytes.byteLength},[buffer])}isEndOfTimeline&&transmuxer.postMessage({action:"endTimeline"}),transmuxer.postMessage({action:"flush"})},dequeue=transmuxer=>{transmuxer.currentTransmux=null,transmuxer.transmuxQueue.length&&(transmuxer.currentTransmux=transmuxer.transmuxQueue.shift(),"function"==typeof transmuxer.currentTransmux?transmuxer.currentTransmux():processTransmux(transmuxer.currentTransmux))},processAction=(transmuxer,action)=>{transmuxer.postMessage({action:action}),dequeue(transmuxer)},enqueueAction=(action,transmuxer)=>{if(!transmuxer.currentTransmux)return transmuxer.currentTransmux=action,void processAction(transmuxer,action);transmuxer.transmuxQueue.push(processAction.bind(null,transmuxer,action))},transmux=options=>{if(!options.transmuxer.currentTransmux)return options.transmuxer.currentTransmux=options,void processTransmux(options);options.transmuxer.transmuxQueue.push(options)};var segmentTransmuxer_reset=transmuxer=>{enqueueAction("reset",transmuxer)},segmentTransmuxer_createTransmuxer=options=>{const transmuxer=new TransmuxWorker;transmuxer.currentTransmux=null,transmuxer.transmuxQueue=[];const term=transmuxer.terminate;return transmuxer.terminate=()=>(transmuxer.currentTransmux=null,transmuxer.transmuxQueue.length=0,term.call(transmuxer)),transmuxer.postMessage({action:"init",options:options}),transmuxer};const workerCallback=function(options){const transmuxer=options.transmuxer,endAction=options.endAction||options.action,callback=options.callback,message=_extends$1({},options,{endAction:null,transmuxer:null,callback:null}),listenForEndEvent=event=>{event.data.action===endAction&&(transmuxer.removeEventListener("message",listenForEndEvent),event.data.data&&(event.data.data=new Uint8Array(event.data.data,options.byteOffset||0,options.byteLength||event.data.data.byteLength),options.data&&(options.data=event.data.data)),callback(event.data))};if(transmuxer.addEventListener("message",listenForEndEvent),options.data){const isArrayBuffer=options.data instanceof ArrayBuffer;message.byteOffset=isArrayBuffer?0:options.data.byteOffset,message.byteLength=options.data.byteLength;const transfers=[isArrayBuffer?options.data:options.data.buffer];transmuxer.postMessage(message,transfers)}else transmuxer.postMessage(message)},REQUEST_ERRORS_FAILURE=2,REQUEST_ERRORS_TIMEOUT=-101,REQUEST_ERRORS_ABORTED=-102,abortAll=activeXhrs=>{activeXhrs.forEach((xhr=>{xhr.abort()}))},handleErrors=(error,request)=>request.timedout?{status:request.status,message:"HLS request timed-out at URL: "+request.uri,code:REQUEST_ERRORS_TIMEOUT,xhr:request}:request.aborted?{status:request.status,message:"HLS request aborted at URL: "+request.uri,code:REQUEST_ERRORS_ABORTED,xhr:request}:error?{status:request.status,message:"HLS request errored at URL: "+request.uri,code:REQUEST_ERRORS_FAILURE,xhr:request}:"arraybuffer"===request.responseType&&0===request.response.byteLength?{status:request.status,message:"Empty HLS response at URL: "+request.uri,code:REQUEST_ERRORS_FAILURE,xhr:request}:null,handleKeyResponse=(segment,objects,finishProcessingFn)=>(error,request)=>{const response=request.response,errorObj=handleErrors(error,request);if(errorObj)return finishProcessingFn(errorObj,segment);if(16!==response.byteLength)return finishProcessingFn({status:request.status,message:"Invalid HLS key at URL: "+request.uri,code:REQUEST_ERRORS_FAILURE,xhr:request},segment);const view=new DataView(response),bytes=new Uint32Array([view.getUint32(0),view.getUint32(4),view.getUint32(8),view.getUint32(12)]);for(let i=0;i<objects.length;i++)objects[i].bytes=bytes;return finishProcessingFn(null,segment)},parseInitSegment=(segment,callback)=>{const type=detectContainerForBytes(segment.map.bytes);if("mp4"!==type){const uri=segment.map.resolvedUri||segment.map.uri;return callback({internal:!0,message:"Found unsupported ".concat(type||"unknown"," container for initialization segment at URL: ").concat(uri),code:REQUEST_ERRORS_FAILURE})}workerCallback({action:"probeMp4Tracks",data:segment.map.bytes,transmuxer:segment.transmuxer,callback:_ref48=>{let{tracks:tracks,data:data}=_ref48;return segment.map.bytes=data,tracks.forEach((function(track){segment.map.tracks=segment.map.tracks||{},segment.map.tracks[track.type]||(segment.map.tracks[track.type]=track,"number"==typeof track.id&&track.timescale&&(segment.map.timescales=segment.map.timescales||{},segment.map.timescales[track.id]=track.timescale))})),callback(null)}})},handleSegmentResponse=_ref50=>{let{segment:segment,finishProcessingFn:finishProcessingFn,responseType:responseType}=_ref50;return(error,request)=>{const errorObj=handleErrors(error,request);if(errorObj)return finishProcessingFn(errorObj,segment);const newBytes="arraybuffer"!==responseType&&request.responseText?(string=>{const view=new Uint8Array(new ArrayBuffer(string.length));for(let i=0;i<string.length;i++)view[i]=string.charCodeAt(i);return view.buffer})(request.responseText.substring(segment.lastReachedChar||0)):request.response;return segment.stats=(request=>({bandwidth:request.bandwidth,bytesReceived:request.bytesReceived||0,roundTripTime:request.roundTripTime||0}))(request),segment.key?segment.encryptedBytes=new Uint8Array(newBytes):segment.bytes=new Uint8Array(newBytes),finishProcessingFn(null,segment)}},transmuxAndNotify=_ref51=>{let{segment:segment,bytes:bytes,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog}=_ref51;const fmp4Tracks=segment.map&&segment.map.tracks||{},isMuxed=Boolean(fmp4Tracks.audio&&fmp4Tracks.video);let audioStartFn=timingInfoFn.bind(null,segment,"audio","start");const audioEndFn=timingInfoFn.bind(null,segment,"audio","end");let videoStartFn=timingInfoFn.bind(null,segment,"video","start");const videoEndFn=timingInfoFn.bind(null,segment,"video","end");workerCallback({action:"probeTs",transmuxer:segment.transmuxer,data:bytes,baseStartTime:segment.baseStartTime,callback:data=>{segment.bytes=bytes=data.data;const probeResult=data.result;probeResult&&(trackInfoFn(segment,{hasAudio:probeResult.hasAudio,hasVideo:probeResult.hasVideo,isMuxed:isMuxed}),trackInfoFn=null),transmux({bytes:bytes,transmuxer:segment.transmuxer,audioAppendStart:segment.audioAppendStart,gopsToAlignWith:segment.gopsToAlignWith,remux:isMuxed,onData:result=>{result.type="combined"===result.type?"video":result.type,dataFn(segment,result)},onTrackInfo:trackInfo=>{trackInfoFn&&(isMuxed&&(trackInfo.isMuxed=!0),trackInfoFn(segment,trackInfo))},onAudioTimingInfo:audioTimingInfo=>{audioStartFn&&void 0!==audioTimingInfo.start&&(audioStartFn(audioTimingInfo.start),audioStartFn=null),audioEndFn&&void 0!==audioTimingInfo.end&&audioEndFn(audioTimingInfo.end)},onVideoTimingInfo:videoTimingInfo=>{videoStartFn&&void 0!==videoTimingInfo.start&&(videoStartFn(videoTimingInfo.start),videoStartFn=null),videoEndFn&&void 0!==videoTimingInfo.end&&videoEndFn(videoTimingInfo.end)},onVideoSegmentTimingInfo:videoSegmentTimingInfo=>{videoSegmentTimingInfoFn(videoSegmentTimingInfo)},onAudioSegmentTimingInfo:audioSegmentTimingInfo=>{audioSegmentTimingInfoFn(audioSegmentTimingInfo)},onId3:(id3Frames,dispatchType)=>{id3Fn(segment,id3Frames,dispatchType)},onCaptions:captions=>{captionsFn(segment,[captions])},isEndOfTimeline:isEndOfTimeline,onEndedTimeline:()=>{endedTimelineFn()},onTransmuxerLog:onTransmuxerLog,onDone:result=>{doneFn&&(result.type="combined"===result.type?"video":result.type,doneFn(null,segment,result))}})}})},handleSegmentBytes=_ref52=>{let{segment:segment,bytes:bytes,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog}=_ref52,bytesAsUint8Array=new Uint8Array(bytes);if(function(bytes){return findBox(bytes,["moof"]).length>0}(bytesAsUint8Array)){segment.isFmp4=!0;const{tracks:tracks}=segment.map,trackInfo={isFmp4:!0,hasVideo:!!tracks.video,hasAudio:!!tracks.audio};tracks.audio&&tracks.audio.codec&&"enca"!==tracks.audio.codec&&(trackInfo.audioCodec=tracks.audio.codec),tracks.video&&tracks.video.codec&&"encv"!==tracks.video.codec&&(trackInfo.videoCodec=tracks.video.codec),tracks.video&&tracks.audio&&(trackInfo.isMuxed=!0),trackInfoFn(segment,trackInfo);const finishLoading=(captions,id3Frames)=>{dataFn(segment,{data:bytesAsUint8Array,type:trackInfo.hasAudio&&!trackInfo.isMuxed?"audio":"video"}),id3Frames&&id3Frames.length&&id3Fn(segment,id3Frames),captions&&captions.length&&captionsFn(segment,captions),doneFn(null,segment,{})};workerCallback({action:"probeMp4StartTime",timescales:segment.map.timescales,data:bytesAsUint8Array,transmuxer:segment.transmuxer,callback:_ref53=>{let{data:data,startTime:startTime}=_ref53;bytes=data.buffer,segment.bytes=bytesAsUint8Array=data,trackInfo.hasAudio&&!trackInfo.isMuxed&&timingInfoFn(segment,"audio","start",startTime),trackInfo.hasVideo&&timingInfoFn(segment,"video","start",startTime),workerCallback({action:"probeEmsgID3",data:bytesAsUint8Array,transmuxer:segment.transmuxer,offset:startTime,callback:_ref54=>{let{emsgData:emsgData,id3Frames:id3Frames}=_ref54;bytes=emsgData.buffer,segment.bytes=bytesAsUint8Array=emsgData,tracks.video&&emsgData.byteLength&&segment.transmuxer?workerCallback({action:"pushMp4Captions",endAction:"mp4Captions",transmuxer:segment.transmuxer,data:bytesAsUint8Array,timescales:segment.map.timescales,trackIds:[tracks.video.id],callback:message=>{bytes=message.data.buffer,segment.bytes=bytesAsUint8Array=message.data,message.logs.forEach((function(log){onTransmuxerLog(merge(log,{stream:"mp4CaptionParser"}))})),finishLoading(message.captions,id3Frames)}}):finishLoading(void 0,id3Frames)}})}})}else if(segment.transmuxer){if(void 0===segment.container&&(segment.container=detectContainerForBytes(bytesAsUint8Array)),"ts"!==segment.container&&"aac"!==segment.container)return trackInfoFn(segment,{hasAudio:!1,hasVideo:!1}),void doneFn(null,segment,{});transmuxAndNotify({segment:segment,bytes:bytes,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog})}else doneFn(null,segment,{})},decrypt=function(_ref55,callback){let{id:id,key:key,encryptedBytes:encryptedBytes,decryptionWorker:decryptionWorker}=_ref55;const decryptionHandler=event=>{if(event.data.source===id){decryptionWorker.removeEventListener("message",decryptionHandler);const decrypted=event.data.decrypted;callback(new Uint8Array(decrypted.bytes,decrypted.byteOffset,decrypted.byteLength))}};let keyBytes;decryptionWorker.addEventListener("message",decryptionHandler),keyBytes=key.bytes.slice?key.bytes.slice():new Uint32Array(Array.prototype.slice.call(key.bytes)),decryptionWorker.postMessage(createTransferableMessage({source:id,encrypted:encryptedBytes,key:keyBytes,iv:key.iv}),[encryptedBytes.buffer,keyBytes.buffer])},waitForCompletion=_ref57=>{let{activeXhrs:activeXhrs,decryptionWorker:decryptionWorker,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog}=_ref57,count=0,didError=!1;return(error,segment)=>{if(!didError){if(error)return didError=!0,abortAll(activeXhrs),doneFn(error,segment);if(count+=1,count===activeXhrs.length){const segmentFinish=function(){if(segment.encryptedBytes)return(_ref56=>{let{decryptionWorker:decryptionWorker,segment:segment,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog}=_ref56;decrypt({id:segment.requestId,key:segment.key,encryptedBytes:segment.encryptedBytes,decryptionWorker:decryptionWorker},(decryptedBytes=>{segment.bytes=decryptedBytes,handleSegmentBytes({segment:segment,bytes:segment.bytes,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog})}))})({decryptionWorker:decryptionWorker,segment:segment,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog});handleSegmentBytes({segment:segment,bytes:segment.bytes,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog})};if(segment.endOfAllRequests=Date.now(),segment.map&&segment.map.encryptedBytes&&!segment.map.bytes)return decrypt({decryptionWorker:decryptionWorker,id:segment.requestId+"-init",encryptedBytes:segment.map.encryptedBytes,key:segment.map.key},(decryptedBytes=>{segment.map.bytes=decryptedBytes,parseInitSegment(segment,(parseError=>{if(parseError)return abortAll(activeXhrs),doneFn(parseError,segment);segmentFinish()}))}));segmentFinish()}}}},handleProgress=_ref59=>{let{segment:segment,progressFn:progressFn,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn}=_ref59;return event=>{if(!event.target.aborted)return segment.stats=merge(segment.stats,(progressEvent=>{const request=progressEvent.target,stats={bandwidth:1/0,bytesReceived:0,roundTripTime:Date.now()-request.requestTime||0};return stats.bytesReceived=progressEvent.loaded,stats.bandwidth=Math.floor(stats.bytesReceived/stats.roundTripTime*8*1e3),stats})(event)),!segment.stats.firstBytesReceivedAt&&segment.stats.bytesReceived&&(segment.stats.firstBytesReceivedAt=Date.now()),progressFn(event,segment)}},mediaSegmentRequest=_ref60=>{let{xhr:xhr,xhrOptions:xhrOptions,decryptionWorker:decryptionWorker,segment:segment,abortFn:abortFn,progressFn:progressFn,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog}=_ref60;const activeXhrs=[],finishProcessingFn=waitForCompletion({activeXhrs:activeXhrs,decryptionWorker:decryptionWorker,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn,doneFn:doneFn,onTransmuxerLog:onTransmuxerLog});if(segment.key&&!segment.key.bytes){const objects=[segment.key];segment.map&&!segment.map.bytes&&segment.map.key&&segment.map.key.resolvedUri===segment.key.resolvedUri&&objects.push(segment.map.key);const keyXhr=xhr(merge(xhrOptions,{uri:segment.key.resolvedUri,responseType:"arraybuffer"}),handleKeyResponse(segment,objects,finishProcessingFn));activeXhrs.push(keyXhr)}if(segment.map&&!segment.map.bytes){if(segment.map.key&&(!segment.key||segment.key.resolvedUri!==segment.map.key.resolvedUri)){const mapKeyXhr=xhr(merge(xhrOptions,{uri:segment.map.key.resolvedUri,responseType:"arraybuffer"}),handleKeyResponse(segment,[segment.map.key],finishProcessingFn));activeXhrs.push(mapKeyXhr)}const initSegmentOptions=merge(xhrOptions,{uri:segment.map.resolvedUri,responseType:"arraybuffer",headers:segmentXhrHeaders(segment.map)}),initSegmentRequestCallback=(_ref49=>{let{segment:segment,finishProcessingFn:finishProcessingFn}=_ref49;return(error,request)=>{const errorObj=handleErrors(error,request);if(errorObj)return finishProcessingFn(errorObj,segment);const bytes=new Uint8Array(request.response);if(segment.map.key)return segment.map.encryptedBytes=bytes,finishProcessingFn(null,segment);segment.map.bytes=bytes,parseInitSegment(segment,(function(parseError){if(parseError)return parseError.xhr=request,parseError.status=request.status,finishProcessingFn(parseError,segment);finishProcessingFn(null,segment)}))}})({segment:segment,finishProcessingFn:finishProcessingFn}),initSegmentXhr=xhr(initSegmentOptions,initSegmentRequestCallback);activeXhrs.push(initSegmentXhr)}const segmentRequestOptions=merge(xhrOptions,{uri:segment.part&&segment.part.resolvedUri||segment.resolvedUri,responseType:"arraybuffer",headers:segmentXhrHeaders(segment)}),segmentXhr=xhr(segmentRequestOptions,handleSegmentResponse({segment:segment,finishProcessingFn:finishProcessingFn,responseType:segmentRequestOptions.responseType}));segmentXhr.addEventListener("progress",handleProgress({segment:segment,progressFn:progressFn,trackInfoFn:trackInfoFn,timingInfoFn:timingInfoFn,videoSegmentTimingInfoFn:videoSegmentTimingInfoFn,audioSegmentTimingInfoFn:audioSegmentTimingInfoFn,id3Fn:id3Fn,captionsFn:captionsFn,isEndOfTimeline:isEndOfTimeline,endedTimelineFn:endedTimelineFn,dataFn:dataFn})),activeXhrs.push(segmentXhr);const loadendState={};return activeXhrs.forEach((activeXhr=>{activeXhr.addEventListener("loadend",(_ref58=>{let{loadendState:loadendState,abortFn:abortFn}=_ref58;return event=>{event.target.aborted&&abortFn&&!loadendState.calledAbortFn&&(abortFn(),loadendState.calledAbortFn=!0)}})({loadendState:loadendState,abortFn:abortFn}))})),()=>abortAll(activeXhrs)},logFn$1=logger("CodecUtils"),isMaat=(main,media)=>{const mediaAttributes=media.attributes||{};return main&&main.mediaGroups&&main.mediaGroups.AUDIO&&mediaAttributes.AUDIO&&main.mediaGroups.AUDIO[mediaAttributes.AUDIO]},unwrapCodecList=function(codecList){const codecs={};return codecList.forEach((_ref61=>{let{mediaType:mediaType,type:type,details:details}=_ref61;codecs[mediaType]=codecs[mediaType]||[],codecs[mediaType].push(translateLegacyCodec("".concat(type).concat(details)))})),Object.keys(codecs).forEach((function(mediaType){if(codecs[mediaType].length>1)return logFn$1("multiple ".concat(mediaType," codecs found as attributes: ").concat(codecs[mediaType].join(", "),". Setting playlist codecs to null so that we wait for mux.js to probe segments for real codecs.")),void(codecs[mediaType]=null);codecs[mediaType]=codecs[mediaType][0]})),codecs},codecCount=function(codecObj){let count=0;return codecObj.audio&&count++,codecObj.video&&count++,count},codecsForPlaylist=function(main,media){const mediaAttributes=media.attributes||{},codecInfo=unwrapCodecList(function(media){const mediaAttributes=media.attributes||{};if(mediaAttributes.CODECS)return parseCodecs(mediaAttributes.CODECS)}(media)||[]);if(isMaat(main,media)&&!codecInfo.audio&&!((main,media)=>{if(!isMaat(main,media))return!0;const mediaAttributes=media.attributes||{},audioGroup=main.mediaGroups.AUDIO[mediaAttributes.AUDIO];for(const groupId in audioGroup)if(!audioGroup[groupId].uri&&!audioGroup[groupId].playlists)return!0;return!1})(main,media)){const defaultCodecs=unwrapCodecList(function(master,audioGroupId){if(!master.mediaGroups.AUDIO||!audioGroupId)return null;var audioGroup=master.mediaGroups.AUDIO[audioGroupId];if(!audioGroup)return null;for(var name in audioGroup){var audioType=audioGroup[name];if(audioType.default&&audioType.playlists)return parseCodecs(audioType.playlists[0].attributes.CODECS)}return null}(main,mediaAttributes.AUDIO)||[]);defaultCodecs.audio&&(codecInfo.audio=defaultCodecs.audio)}return codecInfo},logFn=logger("PlaylistSelector"),representationToString=function(representation){if(!representation||!representation.playlist)return;const playlist=representation.playlist;return JSON.stringify({id:playlist.id,bandwidth:representation.bandwidth,width:representation.width,height:representation.height,codecs:playlist.attributes&&playlist.attributes.CODECS||""})},safeGetComputedStyle=function(el,property){if(!el)return"";const result=window.getComputedStyle(el);return result?result[property]:""},stableSort=function(array,sortFn){const newArray=array.slice();array.sort((function(left,right){const cmp=sortFn(left,right);return 0===cmp?newArray.indexOf(left)-newArray.indexOf(right):cmp}))},comparePlaylistBandwidth=function(left,right){let leftBandwidth,rightBandwidth;return left.attributes.BANDWIDTH&&(leftBandwidth=left.attributes.BANDWIDTH),leftBandwidth=leftBandwidth||window.Number.MAX_VALUE,right.attributes.BANDWIDTH&&(rightBandwidth=right.attributes.BANDWIDTH),rightBandwidth=rightBandwidth||window.Number.MAX_VALUE,leftBandwidth-rightBandwidth};let simpleSelector=function(main,playerBandwidth,playerWidth,playerHeight,limitRenditionByPlayerDimensions,playlistController){if(!main)return;const options={bandwidth:playerBandwidth,width:playerWidth,height:playerHeight,limitRenditionByPlayerDimensions:limitRenditionByPlayerDimensions};let playlists=main.playlists;Playlist.isAudioOnly(main)&&(playlists=playlistController.getAudioTrackPlaylists_(),options.audioOnly=!0);let sortedPlaylistReps=playlists.map((playlist=>{let bandwidth;const width=playlist.attributes&&playlist.attributes.RESOLUTION&&playlist.attributes.RESOLUTION.width,height=playlist.attributes&&playlist.attributes.RESOLUTION&&playlist.attributes.RESOLUTION.height;return bandwidth=playlist.attributes&&playlist.attributes.BANDWIDTH,bandwidth=bandwidth||window.Number.MAX_VALUE,{bandwidth:bandwidth,width:width,height:height,playlist:playlist}}));stableSort(sortedPlaylistReps,((left,right)=>left.bandwidth-right.bandwidth)),sortedPlaylistReps=sortedPlaylistReps.filter((rep=>!Playlist.isIncompatible(rep.playlist)));let enabledPlaylistReps=sortedPlaylistReps.filter((rep=>Playlist.isEnabled(rep.playlist)));enabledPlaylistReps.length||(enabledPlaylistReps=sortedPlaylistReps.filter((rep=>!Playlist.isDisabled(rep.playlist))));const bandwidthPlaylistReps=enabledPlaylistReps.filter((rep=>rep.bandwidth*Config.BANDWIDTH_VARIANCE<playerBandwidth));let highestRemainingBandwidthRep=bandwidthPlaylistReps[bandwidthPlaylistReps.length-1];const bandwidthBestRep=bandwidthPlaylistReps.filter((rep=>rep.bandwidth===highestRemainingBandwidthRep.bandwidth))[0];if(!1===limitRenditionByPlayerDimensions){const chosenRep=bandwidthBestRep||enabledPlaylistReps[0]||sortedPlaylistReps[0];if(chosenRep&&chosenRep.playlist){let type="sortedPlaylistReps";return bandwidthBestRep&&(type="bandwidthBestRep"),enabledPlaylistReps[0]&&(type="enabledPlaylistReps"),logFn("choosing ".concat(representationToString(chosenRep)," using ").concat(type," with options"),options),chosenRep.playlist}return logFn("could not choose a playlist with options",options),null}const haveResolution=bandwidthPlaylistReps.filter((rep=>rep.width&&rep.height));stableSort(haveResolution,((left,right)=>left.width-right.width));const resolutionBestRepList=haveResolution.filter((rep=>rep.width===playerWidth&&rep.height===playerHeight));highestRemainingBandwidthRep=resolutionBestRepList[resolutionBestRepList.length-1];const resolutionBestRep=resolutionBestRepList.filter((rep=>rep.bandwidth===highestRemainingBandwidthRep.bandwidth))[0];let resolutionPlusOneList,resolutionPlusOneSmallest,resolutionPlusOneRep,leastPixelDiffRep;if(resolutionBestRep||(resolutionPlusOneList=haveResolution.filter((rep=>rep.width>playerWidth||rep.height>playerHeight)),resolutionPlusOneSmallest=resolutionPlusOneList.filter((rep=>rep.width===resolutionPlusOneList[0].width&&rep.height===resolutionPlusOneList[0].height)),highestRemainingBandwidthRep=resolutionPlusOneSmallest[resolutionPlusOneSmallest.length-1],resolutionPlusOneRep=resolutionPlusOneSmallest.filter((rep=>rep.bandwidth===highestRemainingBandwidthRep.bandwidth))[0]),playlistController.leastPixelDiffSelector){const leastPixelDiffList=haveResolution.map((rep=>(rep.pixelDiff=Math.abs(rep.width-playerWidth)+Math.abs(rep.height-playerHeight),rep)));stableSort(leastPixelDiffList,((left,right)=>left.pixelDiff===right.pixelDiff?right.bandwidth-left.bandwidth:left.pixelDiff-right.pixelDiff)),leastPixelDiffRep=leastPixelDiffList[0]}const chosenRep=leastPixelDiffRep||resolutionPlusOneRep||resolutionBestRep||bandwidthBestRep||enabledPlaylistReps[0]||sortedPlaylistReps[0];if(chosenRep&&chosenRep.playlist){let type="sortedPlaylistReps";return leastPixelDiffRep?type="leastPixelDiffRep":resolutionPlusOneRep?type="resolutionPlusOneRep":resolutionBestRep?type="resolutionBestRep":bandwidthBestRep?type="bandwidthBestRep":enabledPlaylistReps[0]&&(type="enabledPlaylistReps"),logFn("choosing ".concat(representationToString(chosenRep)," using ").concat(type," with options"),options),chosenRep.playlist}return logFn("could not choose a playlist with options",options),null};const lastBandwidthSelector=function(){const pixelRatio=this.useDevicePixelRatio&&window.devicePixelRatio||1;return simpleSelector(this.playlists.main,this.systemBandwidth,parseInt(safeGetComputedStyle(this.tech_.el(),"width"),10)*pixelRatio,parseInt(safeGetComputedStyle(this.tech_.el(),"height"),10)*pixelRatio,this.limitRenditionByPlayerDimensions,this.playlistController_)},addMetadata=_ref63=>{let{inbandTextTracks:inbandTextTracks,metadataArray:metadataArray,timestampOffset:timestampOffset,videoDuration:videoDuration}=_ref63;if(!metadataArray)return;const Cue=window.WebKitDataCue||window.VTTCue,metadataTrack=inbandTextTracks.metadataTrack_;if(!metadataTrack)return;if(metadataArray.forEach((metadata=>{const time=metadata.cueTime+timestampOffset;!("number"!=typeof time||window.isNaN(time)||time<0)&&time<1/0&&metadata.frames&&metadata.frames.length&&metadata.frames.forEach((frame=>{const cue=new Cue(time,time,frame.value||frame.url||frame.data||"");cue.frame=frame,cue.value=frame,function(cue){Object.defineProperties(cue.frame,{id:{get:()=>(videojs.log.warn("cue.frame.id is deprecated. Use cue.value.key instead."),cue.value.key)},value:{get:()=>(videojs.log.warn("cue.frame.value is deprecated. Use cue.value.data instead."),cue.value.data)},privateData:{get:()=>(videojs.log.warn("cue.frame.privateData is deprecated. Use cue.value.data instead."),cue.value.data)}})}(cue),metadataTrack.addCue(cue)}))})),!metadataTrack.cues||!metadataTrack.cues.length)return;const cues=metadataTrack.cues,cuesArray=[];for(let i=0;i<cues.length;i++)cues[i]&&cuesArray.push(cues[i]);const cuesGroupedByStartTime=cuesArray.reduce(((obj,cue)=>{const timeSlot=obj[cue.startTime]||[];return timeSlot.push(cue),obj[cue.startTime]=timeSlot,obj}),{}),sortedStartTimes=Object.keys(cuesGroupedByStartTime).sort(((a,b)=>Number(a)-Number(b)));sortedStartTimes.forEach(((startTime,idx)=>{const cueGroup=cuesGroupedByStartTime[startTime],finiteDuration=isFinite(videoDuration)?videoDuration:startTime,nextTime=Number(sortedStartTimes[idx+1])||finiteDuration;cueGroup.forEach((cue=>{cue.endTime=nextTime}))}))},dateRangeAttr={id:"ID",class:"CLASS",startDate:"START-DATE",duration:"DURATION",endDate:"END-DATE",endOnNext:"END-ON-NEXT",plannedDuration:"PLANNED-DURATION",scte35Out:"SCTE35-OUT",scte35In:"SCTE35-IN"},dateRangeKeysToOmit=new Set(["id","class","startDate","duration","endDate","endOnNext","startTime","endTime","processDateRange"]),createMetadataTrackIfNotExists=(inbandTextTracks,dispatchType,tech)=>{inbandTextTracks.metadataTrack_||(inbandTextTracks.metadataTrack_=tech.addRemoteTextTrack({kind:"metadata",label:"Timed Metadata"},!1).track,videojs.browser.IS_ANY_SAFARI||(inbandTextTracks.metadataTrack_.inBandMetadataTrackDispatchType=dispatchType))},removeCuesFromTrack=function(start,end,track){let i,cue;if(track&&track.cues)for(i=track.cues.length;i--;)cue=track.cues[i],cue.startTime>=start&&cue.endTime<=end&&track.removeCue(cue)},finite=num=>"number"==typeof num&&isFinite(num),segmentInfoString=segmentInfo=>{const{startOfSegment:startOfSegment,duration:duration,segment:segment,part:part,playlist:{mediaSequence:seq,id:id,segments:segments=[]},mediaIndex:index,partIndex:partIndex,timeline:timeline}=segmentInfo,segmentLen=segments.length-1;let selection="mediaIndex/partIndex increment";segmentInfo.getMediaInfoForTime?selection="getMediaInfoForTime (".concat(segmentInfo.getMediaInfoForTime,")"):segmentInfo.isSyncRequest&&(selection="getSyncSegmentCandidate (isSyncRequest)"),segmentInfo.independent&&(selection+=" with independent ".concat(segmentInfo.independent));const hasPartIndex="number"==typeof partIndex,name=segmentInfo.segment.uri?"segment":"pre-segment",zeroBasedPartCount=hasPartIndex?getKnownPartCount({preloadSegment:segment})-1:0;return"".concat(name," [").concat(seq+index,"/").concat(seq+segmentLen,"]")+(hasPartIndex?" part [".concat(partIndex,"/").concat(zeroBasedPartCount,"]"):"")+" segment start/end [".concat(segment.start," => ").concat(segment.end,"]")+(hasPartIndex?" part start/end [".concat(part.start," => ").concat(part.end,"]"):"")+" startOfSegment [".concat(startOfSegment,"]")+" duration [".concat(duration,"]")+" timeline [".concat(timeline,"]")+" selected by [".concat(selection,"]")+" playlist [".concat(id,"]")},timingInfoPropertyForMedia=mediaType=>"".concat(mediaType,"TimingInfo"),shouldWaitForTimelineChange=_ref66=>{let{timelineChangeController:timelineChangeController,currentTimeline:currentTimeline,segmentTimeline:segmentTimeline,loaderType:loaderType,audioDisabled:audioDisabled}=_ref66;if(currentTimeline===segmentTimeline)return!1;if("audio"===loaderType){const lastMainTimelineChange=timelineChangeController.lastTimelineChange({type:"main"});return!lastMainTimelineChange||lastMainTimelineChange.to!==segmentTimeline}if("main"===loaderType&&audioDisabled){const pendingAudioTimelineChange=timelineChangeController.pendingTimelineChange({type:"audio"});return!pendingAudioTimelineChange||pendingAudioTimelineChange.to!==segmentTimeline}return!1},segmentTooLong=_ref67=>{let{segmentDuration:segmentDuration,maxDuration:maxDuration}=_ref67;return!!segmentDuration&&Math.round(segmentDuration)>maxDuration+.03333333333333333},getTroublesomeSegmentDurationMessage=(segmentInfo,sourceType)=>{if("hls"!==sourceType)return null;const segmentDuration=(timingInfos=>{let maxDuration=0;return["video","audio"].forEach((function(type){const typeTimingInfo=timingInfos["".concat(type,"TimingInfo")];if(!typeTimingInfo)return;const{start:start,end:end}=typeTimingInfo;let duration;"bigint"==typeof start||"bigint"==typeof end?duration=window.BigInt(end)-window.BigInt(start):"number"==typeof start&&"number"==typeof end&&(duration=end-start),void 0!==duration&&duration>maxDuration&&(maxDuration=duration)})),"bigint"==typeof maxDuration&&maxDuration<Number.MAX_SAFE_INTEGER&&(maxDuration=Number(maxDuration)),maxDuration})({audioTimingInfo:segmentInfo.audioTimingInfo,videoTimingInfo:segmentInfo.videoTimingInfo});if(!segmentDuration)return null;const targetDuration=segmentInfo.playlist.targetDuration,isSegmentWayTooLong=segmentTooLong({segmentDuration:segmentDuration,maxDuration:2*targetDuration}),isSegmentSlightlyTooLong=segmentTooLong({segmentDuration:segmentDuration,maxDuration:targetDuration}),segmentTooLongMessage="Segment with index ".concat(segmentInfo.mediaIndex," ")+"from playlist ".concat(segmentInfo.playlist.id," ")+"has a duration of ".concat(segmentDuration," ")+"when the reported duration is ".concat(segmentInfo.duration," ")+"and the target duration is ".concat(targetDuration,". ")+"For HLS content, a duration in excess of the target duration may result in playback issues. See the HLS specification section on EXT-X-TARGETDURATION for more details: https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.3.1";return isSegmentWayTooLong||isSegmentSlightlyTooLong?{severity:isSegmentWayTooLong?"warn":"info",message:segmentTooLongMessage}:null};class SegmentLoader extends videojs.EventTarget{constructor(settings){if(super(),!settings)throw new TypeError("Initialization settings are required");if("function"!=typeof settings.currentTime)throw new TypeError("No currentTime getter specified");if(!settings.mediaSource)throw new TypeError("No MediaSource specified");this.bandwidth=settings.bandwidth,this.throughput={rate:0,count:0},this.roundTrip=NaN,this.resetStats_(),this.mediaIndex=null,this.partIndex=null,this.hasPlayed_=settings.hasPlayed,this.currentTime_=settings.currentTime,this.seekable_=settings.seekable,this.seeking_=settings.seeking,this.duration_=settings.duration,this.mediaSource_=settings.mediaSource,this.vhs_=settings.vhs,this.loaderType_=settings.loaderType,this.currentMediaInfo_=void 0,this.startingMediaInfo_=void 0,this.segmentMetadataTrack_=settings.segmentMetadataTrack,this.goalBufferLength_=settings.goalBufferLength,this.sourceType_=settings.sourceType,this.sourceUpdater_=settings.sourceUpdater,this.inbandTextTracks_=settings.inbandTextTracks,this.state_="INIT",this.timelineChangeController_=settings.timelineChangeController,this.shouldSaveSegmentTimingInfo_=!0,this.parse708captions_=settings.parse708captions,this.useDtsForTimestampOffset_=settings.useDtsForTimestampOffset,this.captionServices_=settings.captionServices,this.exactManifestTimings=settings.exactManifestTimings,this.addMetadataToTextTrack=settings.addMetadataToTextTrack,this.checkBufferTimeout_=null,this.error_=void 0,this.currentTimeline_=-1,this.shouldForceTimestampOffsetAfterResync_=!1,this.pendingSegment_=null,this.xhrOptions_=null,this.pendingSegments_=[],this.audioDisabled_=!1,this.isPendingTimestampOffset_=!1,this.gopBuffer_=[],this.timeMapping_=0,this.safeAppend_=!1,this.appendInitSegment_={audio:!0,video:!0},this.playlistOfLastInitSegment_={audio:null,video:null},this.callQueue_=[],this.loadQueue_=[],this.metadataQueue_={id3:[],caption:[]},this.waitingOnRemove_=!1,this.quotaExceededErrorRetryTimeout_=null,this.activeInitSegmentId_=null,this.initSegments_={},this.cacheEncryptionKeys_=settings.cacheEncryptionKeys,this.keyCache_={},this.decrypter_=settings.decrypter,this.syncController_=settings.syncController,this.syncPoint_={segmentIndex:0,time:0},this.transmuxer_=this.createTransmuxer_(),this.triggerSyncInfoUpdate_=()=>this.trigger("syncinfoupdate"),this.syncController_.on("syncinfoupdate",this.triggerSyncInfoUpdate_),this.mediaSource_.addEventListener("sourceopen",(()=>{this.isEndOfStream_()||(this.ended_=!1)})),this.fetchAtBuffer_=!1,this.logger_=logger("SegmentLoader[".concat(this.loaderType_,"]")),Object.defineProperty(this,"state",{get(){return this.state_},set(newState){newState!==this.state_&&(this.logger_("".concat(this.state_," -> ").concat(newState)),this.state_=newState,this.trigger("statechange"))}}),this.sourceUpdater_.on("ready",(()=>{this.hasEnoughInfoToAppend_()&&this.processCallQueue_()})),"main"===this.loaderType_&&this.timelineChangeController_.on("pendingtimelinechange",(()=>{this.hasEnoughInfoToAppend_()&&this.processCallQueue_()})),"audio"===this.loaderType_&&this.timelineChangeController_.on("timelinechange",(()=>{this.hasEnoughInfoToLoad_()&&this.processLoadQueue_(),this.hasEnoughInfoToAppend_()&&this.processCallQueue_()}))}createTransmuxer_(){return segmentTransmuxer_createTransmuxer({remux:!1,alignGopsAtEnd:this.safeAppend_,keepOriginalTimestamps:!0,parse708captions:this.parse708captions_,captionServices:this.captionServices_})}resetStats_(){this.mediaBytesTransferred=0,this.mediaRequests=0,this.mediaRequestsAborted=0,this.mediaRequestsTimedout=0,this.mediaRequestsErrored=0,this.mediaTransferDuration=0,this.mediaSecondsLoaded=0,this.mediaAppends=0}dispose(){this.trigger("dispose"),this.state="DISPOSED",this.pause(),this.abort_(),this.transmuxer_&&this.transmuxer_.terminate(),this.resetStats_(),this.checkBufferTimeout_&&window.clearTimeout(this.checkBufferTimeout_),this.syncController_&&this.triggerSyncInfoUpdate_&&this.syncController_.off("syncinfoupdate",this.triggerSyncInfoUpdate_),this.off()}setAudio(enable){this.audioDisabled_=!enable,enable?this.appendInitSegment_.audio=!0:this.sourceUpdater_.removeAudio(0,this.duration_())}abort(){"WAITING"===this.state?(this.abort_(),this.state="READY",this.paused()||this.monitorBuffer_()):this.pendingSegment_&&(this.pendingSegment_=null)}abort_(){this.pendingSegment_&&this.pendingSegment_.abortRequests&&this.pendingSegment_.abortRequests(),this.pendingSegment_=null,this.callQueue_=[],this.loadQueue_=[],this.metadataQueue_.id3=[],this.metadataQueue_.caption=[],this.timelineChangeController_.clearPendingTimelineChange(this.loaderType_),this.waitingOnRemove_=!1,window.clearTimeout(this.quotaExceededErrorRetryTimeout_),this.quotaExceededErrorRetryTimeout_=null}checkForAbort_(requestId){return"APPENDING"!==this.state||this.pendingSegment_?!this.pendingSegment_||this.pendingSegment_.requestId!==requestId:(this.state="READY",!0)}error(error){return void 0!==error&&(this.logger_("error occurred:",error),this.error_=error),this.pendingSegment_=null,this.error_}endOfStream(){this.ended_=!0,this.transmuxer_&&segmentTransmuxer_reset(this.transmuxer_),this.gopBuffer_.length=0,this.pause(),this.trigger("ended")}buffered_(){const trackInfo=this.getMediaInfo_();if(!this.sourceUpdater_||!trackInfo)return createTimeRanges();if("main"===this.loaderType_){const{hasAudio:hasAudio,hasVideo:hasVideo,isMuxed:isMuxed}=trackInfo;if(hasVideo&&hasAudio&&!this.audioDisabled_&&!isMuxed)return this.sourceUpdater_.buffered();if(hasVideo)return this.sourceUpdater_.videoBuffered()}return this.sourceUpdater_.audioBuffered()}initSegmentForMap(map){let set=arguments.length>1&&void 0!==arguments[1]&&arguments[1];if(!map)return null;const id=initSegmentId(map);let storedMap=this.initSegments_[id];return set&&!storedMap&&map.bytes&&(this.initSegments_[id]=storedMap={resolvedUri:map.resolvedUri,byterange:map.byterange,bytes:map.bytes,tracks:map.tracks,timescales:map.timescales}),storedMap||map}segmentKey(key){let set=arguments.length>1&&void 0!==arguments[1]&&arguments[1];if(!key)return null;const id=segmentKeyId(key);let storedKey=this.keyCache_[id];this.cacheEncryptionKeys_&&set&&!storedKey&&key.bytes&&(this.keyCache_[id]=storedKey={resolvedUri:key.resolvedUri,bytes:key.bytes});const result={resolvedUri:(storedKey||key).resolvedUri};return storedKey&&(result.bytes=storedKey.bytes),result}couldBeginLoading_(){return this.playlist_&&!this.paused()}load(){if(this.monitorBuffer_(),this.playlist_)return"INIT"===this.state&&this.couldBeginLoading_()?this.init_():void(!this.couldBeginLoading_()||"READY"!==this.state&&"INIT"!==this.state||(this.state="READY"))}init_(){return this.state="READY",this.resetEverything(),this.monitorBuffer_()}playlist(newPlaylist){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};if(!newPlaylist)return;const oldPlaylist=this.playlist_,segmentInfo=this.pendingSegment_;this.playlist_=newPlaylist,this.xhrOptions_=options,"INIT"===this.state&&(newPlaylist.syncInfo={mediaSequence:newPlaylist.mediaSequence,time:0},"main"===this.loaderType_&&this.syncController_.setDateTimeMappingForStart(newPlaylist));let oldId=null;if(oldPlaylist&&(oldPlaylist.id?oldId=oldPlaylist.id:oldPlaylist.uri&&(oldId=oldPlaylist.uri)),this.logger_("playlist update [".concat(oldId," => ").concat(newPlaylist.id||newPlaylist.uri,"]")),this.syncController_.updateMediaSequenceMap(newPlaylist,this.currentTime_(),this.loaderType_),this.trigger("syncinfoupdate"),"INIT"===this.state&&this.couldBeginLoading_())return this.init_();if(!oldPlaylist||oldPlaylist.uri!==newPlaylist.uri){if(null!==this.mediaIndex){!newPlaylist.endList&&"number"==typeof newPlaylist.partTargetDuration?this.resetLoader():this.resyncLoader()}return this.currentMediaInfo_=void 0,void this.trigger("playlistupdate")}const mediaSequenceDiff=newPlaylist.mediaSequence-oldPlaylist.mediaSequence;if(this.logger_("live window shift [".concat(mediaSequenceDiff,"]")),null!==this.mediaIndex)if(this.mediaIndex-=mediaSequenceDiff,this.mediaIndex<0)this.mediaIndex=null,this.partIndex=null;else{const segment=this.playlist_.segments[this.mediaIndex];if(this.partIndex&&(!segment.parts||!segment.parts.length||!segment.parts[this.partIndex])){const mediaIndex=this.mediaIndex;this.logger_("currently processing part (index ".concat(this.partIndex,") no longer exists.")),this.resetLoader(),this.mediaIndex=mediaIndex}}segmentInfo&&(segmentInfo.mediaIndex-=mediaSequenceDiff,segmentInfo.mediaIndex<0?(segmentInfo.mediaIndex=null,segmentInfo.partIndex=null):(segmentInfo.mediaIndex>=0&&(segmentInfo.segment=newPlaylist.segments[segmentInfo.mediaIndex]),segmentInfo.partIndex>=0&&segmentInfo.segment.parts&&(segmentInfo.part=segmentInfo.segment.parts[segmentInfo.partIndex]))),this.syncController_.saveExpiredSegmentInfo(oldPlaylist,newPlaylist)}pause(){this.checkBufferTimeout_&&(window.clearTimeout(this.checkBufferTimeout_),this.checkBufferTimeout_=null)}paused(){return null===this.checkBufferTimeout_}resetEverything(done){this.ended_=!1,this.activeInitSegmentId_=null,this.appendInitSegment_={audio:!0,video:!0},this.resetLoader(),this.remove(0,1/0,done),this.transmuxer_&&(this.transmuxer_.postMessage({action:"clearAllMp4Captions"}),this.transmuxer_.postMessage({action:"reset"}))}resetLoader(){this.fetchAtBuffer_=!1,this.resyncLoader()}resyncLoader(){this.transmuxer_&&segmentTransmuxer_reset(this.transmuxer_),this.mediaIndex=null,this.partIndex=null,this.syncPoint_=null,this.isPendingTimestampOffset_=!1,this.shouldForceTimestampOffsetAfterResync_=!0,this.callQueue_=[],this.loadQueue_=[],this.metadataQueue_.id3=[],this.metadataQueue_.caption=[],this.abort(),this.transmuxer_&&this.transmuxer_.postMessage({action:"clearParsedMp4Captions"})}remove(start,end){let done=arguments.length>2&&void 0!==arguments[2]?arguments[2]:()=>{},force=arguments.length>3&&void 0!==arguments[3]&&arguments[3];if(end===1/0&&(end=this.duration_()),end<=start)return void this.logger_("skipping remove because end ${end} is <= start ${start}");if(!this.sourceUpdater_||!this.getMediaInfo_())return void this.logger_("skipping remove because no source updater or starting media info");let removesRemaining=1;const removeFinished=()=>{removesRemaining--,0===removesRemaining&&done()};!force&&this.audioDisabled_||(removesRemaining++,this.sourceUpdater_.removeAudio(start,end,removeFinished)),(force||"main"===this.loaderType_)&&(this.gopBuffer_=((buffer,start,end,mapping)=>{const startPts=Math.ceil((start-mapping)*clock_1),endPts=Math.ceil((end-mapping)*clock_1),updatedBuffer=buffer.slice();let i=buffer.length;for(;i--&&!(buffer[i].pts<=endPts););if(-1===i)return updatedBuffer;let j=i+1;for(;j--&&!(buffer[j].pts<=startPts););return j=Math.max(j,0),updatedBuffer.splice(j,i-j+1),updatedBuffer})(this.gopBuffer_,start,end,this.timeMapping_),removesRemaining++,this.sourceUpdater_.removeVideo(start,end,removeFinished));for(const track in this.inbandTextTracks_)removeCuesFromTrack(start,end,this.inbandTextTracks_[track]);removeCuesFromTrack(start,end,this.segmentMetadataTrack_),removeFinished()}monitorBuffer_(){this.checkBufferTimeout_&&window.clearTimeout(this.checkBufferTimeout_),this.checkBufferTimeout_=window.setTimeout(this.monitorBufferTick_.bind(this),1)}monitorBufferTick_(){"READY"===this.state&&this.fillBuffer_(),this.checkBufferTimeout_&&window.clearTimeout(this.checkBufferTimeout_),this.checkBufferTimeout_=window.setTimeout(this.monitorBufferTick_.bind(this),500)}fillBuffer_(){if(this.sourceUpdater_.updating())return;const segmentInfo=this.chooseNextRequest_();segmentInfo&&("number"==typeof segmentInfo.timestampOffset&&(this.isPendingTimestampOffset_=!1,this.timelineChangeController_.pendingTimelineChange({type:this.loaderType_,from:this.currentTimeline_,to:segmentInfo.timeline})),this.loadSegment_(segmentInfo))}isEndOfStream_(){let mediaIndex=arguments.length>0&&void 0!==arguments[0]?arguments[0]:this.mediaIndex,playlist=arguments.length>1&&void 0!==arguments[1]?arguments[1]:this.playlist_,partIndex=arguments.length>2&&void 0!==arguments[2]?arguments[2]:this.partIndex;if(!playlist||!this.mediaSource_)return!1;const segment="number"==typeof mediaIndex&&playlist.segments[mediaIndex],appendedLastSegment=mediaIndex+1===playlist.segments.length,appendedLastPart=!segment||!segment.parts||partIndex+1===segment.parts.length;return playlist.endList&&"open"===this.mediaSource_.readyState&&appendedLastSegment&&appendedLastPart}chooseNextRequest_(){const buffered=this.buffered_(),bufferedEnd=lastBufferedEnd(buffered)||0,bufferedTime=timeAheadOf(buffered,this.currentTime_()),preloaded=!this.hasPlayed_()&&bufferedTime>=1,haveEnoughBuffer=bufferedTime>=this.goalBufferLength_(),segments=this.playlist_.segments;if(!segments.length||preloaded||haveEnoughBuffer)return null;this.syncPoint_=this.syncPoint_||this.syncController_.getSyncPoint(this.playlist_,this.duration_(),this.currentTimeline_,this.currentTime_(),this.loaderType_);const next={partIndex:null,mediaIndex:null,startOfSegment:null,playlist:this.playlist_,isSyncRequest:Boolean(!this.syncPoint_)};if(next.isSyncRequest)next.mediaIndex=function(currentTimeline,segments,targetTime){segments=segments||[];const timelineSegments=[];let time=0;for(let i=0;i<segments.length;i++){const segment=segments[i];if(currentTimeline===segment.timeline&&(timelineSegments.push(i),time+=segment.duration,time>targetTime))return i}return 0===timelineSegments.length?0:timelineSegments[timelineSegments.length-1]}(this.currentTimeline_,segments,bufferedEnd),this.logger_("choose next request. Can not find sync point. Fallback to media Index: ".concat(next.mediaIndex));else if(null!==this.mediaIndex){const segment=segments[this.mediaIndex],partIndex="number"==typeof this.partIndex?this.partIndex:-1;next.startOfSegment=segment.end?segment.end:bufferedEnd,segment.parts&&segment.parts[partIndex+1]?(next.mediaIndex=this.mediaIndex,next.partIndex=partIndex+1):next.mediaIndex=this.mediaIndex+1}else{const{segmentIndex:segmentIndex,startTime:startTime,partIndex:partIndex}=Playlist.getMediaInfoForTime({exactManifestTimings:this.exactManifestTimings,playlist:this.playlist_,currentTime:this.fetchAtBuffer_?bufferedEnd:this.currentTime_(),startingPartIndex:this.syncPoint_.partIndex,startingSegmentIndex:this.syncPoint_.segmentIndex,startTime:this.syncPoint_.time});next.getMediaInfoForTime=this.fetchAtBuffer_?"bufferedEnd ".concat(bufferedEnd):"currentTime ".concat(this.currentTime_()),next.mediaIndex=segmentIndex,next.startOfSegment=startTime,next.partIndex=partIndex,this.logger_("choose next request. Playlist switched and we have a sync point. Media Index: ".concat(next.mediaIndex," "))}const nextSegment=segments[next.mediaIndex];let nextPart=nextSegment&&"number"==typeof next.partIndex&&nextSegment.parts&&nextSegment.parts[next.partIndex];if(!nextSegment||"number"==typeof next.partIndex&&!nextPart)return null;"number"!=typeof next.partIndex&&nextSegment.parts&&(next.partIndex=0,nextPart=nextSegment.parts[0]);const hasIndependentSegments=this.vhs_.playlists&&this.vhs_.playlists.main&&this.vhs_.playlists.main.independentSegments||this.playlist_.independentSegments;if(!bufferedTime&&nextPart&&!hasIndependentSegments&&!nextPart.independent)if(0===next.partIndex){const lastSegment=segments[next.mediaIndex-1],lastSegmentLastPart=lastSegment.parts&&lastSegment.parts.length&&lastSegment.parts[lastSegment.parts.length-1];lastSegmentLastPart&&lastSegmentLastPart.independent&&(next.mediaIndex-=1,next.partIndex=lastSegment.parts.length-1,next.independent="previous segment")}else nextSegment.parts[next.partIndex-1].independent&&(next.partIndex-=1,next.independent="previous part");const ended=this.mediaSource_&&"ended"===this.mediaSource_.readyState;return next.mediaIndex>=segments.length-1&&ended&&!this.seeking_()?null:(this.shouldForceTimestampOffsetAfterResync_&&(this.shouldForceTimestampOffsetAfterResync_=!1,next.forceTimestampOffset=!0,this.logger_("choose next request. Force timestamp offset after loader resync")),this.generateSegmentInfo_(next))}generateSegmentInfo_(options){const{independent:independent,playlist:playlist,mediaIndex:mediaIndex,startOfSegment:startOfSegment,isSyncRequest:isSyncRequest,partIndex:partIndex,forceTimestampOffset:forceTimestampOffset,getMediaInfoForTime:getMediaInfoForTime}=options,segment=playlist.segments[mediaIndex],part="number"==typeof partIndex&&segment.parts[partIndex],segmentInfo={requestId:"segment-loader-"+Math.random(),uri:part&&part.resolvedUri||segment.resolvedUri,mediaIndex:mediaIndex,partIndex:part?partIndex:null,isSyncRequest:isSyncRequest,startOfSegment:startOfSegment,playlist:playlist,bytes:null,encryptedBytes:null,timestampOffset:null,timeline:segment.timeline,duration:part&&part.duration||segment.duration,segment:segment,part:part,byteLength:0,transmuxer:this.transmuxer_,getMediaInfoForTime:getMediaInfoForTime,independent:independent},overrideCheck=void 0!==forceTimestampOffset?forceTimestampOffset:this.isPendingTimestampOffset_;segmentInfo.timestampOffset=this.timestampOffsetForSegment_({segmentTimeline:segment.timeline,currentTimeline:this.currentTimeline_,startOfSegment:startOfSegment,buffered:this.buffered_(),overrideCheck:overrideCheck});const audioBufferedEnd=lastBufferedEnd(this.sourceUpdater_.audioBuffered());return"number"==typeof audioBufferedEnd&&(segmentInfo.audioAppendStart=audioBufferedEnd-this.sourceUpdater_.audioTimestampOffset()),this.sourceUpdater_.videoBuffered().length&&(segmentInfo.gopsToAlignWith=((buffer,currentTime,mapping)=>{if(null==currentTime||!buffer.length)return[];const currentTimePts=Math.ceil((currentTime-mapping+3)*clock_1);let i;for(i=0;i<buffer.length&&!(buffer[i].pts>currentTimePts);i++);return buffer.slice(i)})(this.gopBuffer_,this.currentTime_()-this.sourceUpdater_.videoTimestampOffset(),this.timeMapping_)),segmentInfo}timestampOffsetForSegment_(options){return(_ref65=>{let{segmentTimeline:segmentTimeline,currentTimeline:currentTimeline,startOfSegment:startOfSegment,buffered:buffered,overrideCheck:overrideCheck}=_ref65;return overrideCheck||segmentTimeline!==currentTimeline?segmentTimeline<currentTimeline?startOfSegment:buffered.length?buffered.end(buffered.length-1):startOfSegment:null})(options)}earlyAbortWhenNeeded_(stats){if(this.vhs_.tech_.paused()||!this.xhrOptions_.timeout||!this.playlist_.attributes.BANDWIDTH)return;if(Date.now()-(stats.firstBytesReceivedAt||Date.now())<1e3)return;const currentTime=this.currentTime_(),measuredBandwidth=stats.bandwidth,segmentDuration=this.pendingSegment_.duration,requestTimeRemaining=Playlist.estimateSegmentRequestTime(segmentDuration,measuredBandwidth,this.playlist_,stats.bytesReceived),timeUntilRebuffer$1=function(buffered,currentTime){let playbackRate=arguments.length>2&&void 0!==arguments[2]?arguments[2]:1;return((buffered.length?buffered.end(buffered.length-1):0)-currentTime)/playbackRate}(this.buffered_(),currentTime,this.vhs_.tech_.playbackRate())-1;if(requestTimeRemaining<=timeUntilRebuffer$1)return;const switchCandidate=function(settings){const{main:main,currentTime:currentTime,bandwidth:bandwidth,duration:duration,segmentDuration:segmentDuration,timeUntilRebuffer:timeUntilRebuffer,currentTimeline:currentTimeline,syncController:syncController}=settings,compatiblePlaylists=main.playlists.filter((playlist=>!Playlist.isIncompatible(playlist)));let enabledPlaylists=compatiblePlaylists.filter(Playlist.isEnabled);enabledPlaylists.length||(enabledPlaylists=compatiblePlaylists.filter((playlist=>!Playlist.isDisabled(playlist))));const rebufferingEstimates=enabledPlaylists.filter(Playlist.hasAttribute.bind(null,"BANDWIDTH")).map((playlist=>{const numRequests=syncController.getSyncPoint(playlist,duration,currentTimeline,currentTime)?1:2;return{playlist:playlist,rebufferingImpact:Playlist.estimateSegmentRequestTime(segmentDuration,bandwidth,playlist)*numRequests-timeUntilRebuffer}})),noRebufferingPlaylists=rebufferingEstimates.filter((estimate=>estimate.rebufferingImpact<=0));return stableSort(noRebufferingPlaylists,((a,b)=>comparePlaylistBandwidth(b.playlist,a.playlist))),noRebufferingPlaylists.length?noRebufferingPlaylists[0]:(stableSort(rebufferingEstimates,((a,b)=>a.rebufferingImpact-b.rebufferingImpact)),rebufferingEstimates[0]||null)}({main:this.vhs_.playlists.main,currentTime:currentTime,bandwidth:measuredBandwidth,duration:this.duration_(),segmentDuration:segmentDuration,timeUntilRebuffer:timeUntilRebuffer$1,currentTimeline:this.currentTimeline_,syncController:this.syncController_});if(!switchCandidate)return;const timeSavedBySwitching=requestTimeRemaining-timeUntilRebuffer$1-switchCandidate.rebufferingImpact;let minimumTimeSaving=.5;timeUntilRebuffer$1<=.03333333333333333&&(minimumTimeSaving=1),!switchCandidate.playlist||switchCandidate.playlist.uri===this.playlist_.uri||timeSavedBySwitching<minimumTimeSaving||(this.bandwidth=switchCandidate.playlist.attributes.BANDWIDTH*Config.BANDWIDTH_VARIANCE+1,this.trigger("earlyabort"))}handleAbort_(segmentInfo){this.logger_("Aborting ".concat(segmentInfoString(segmentInfo))),this.mediaRequestsAborted+=1}handleProgress_(event,simpleSegment){this.earlyAbortWhenNeeded_(simpleSegment.stats),this.checkForAbort_(simpleSegment.requestId)||this.trigger("progress")}handleTrackInfo_(simpleSegment,trackInfo){this.earlyAbortWhenNeeded_(simpleSegment.stats),this.checkForAbort_(simpleSegment.requestId)||this.checkForIllegalMediaSwitch(trackInfo)||(trackInfo=trackInfo||{},function(a,b){if(!a&&!b||!a&&b||a&&!b)return!1;if(a===b)return!0;const akeys=Object.keys(a).sort(),bkeys=Object.keys(b).sort();if(akeys.length!==bkeys.length)return!1;for(let i=0;i<akeys.length;i++){const key=akeys[i];if(key!==bkeys[i])return!1;if(a[key]!==b[key])return!1}return!0}(this.currentMediaInfo_,trackInfo)||(this.appendInitSegment_={audio:!0,video:!0},this.startingMediaInfo_=trackInfo,this.currentMediaInfo_=trackInfo,this.logger_("trackinfo update",trackInfo),this.trigger("trackinfo")),this.checkForAbort_(simpleSegment.requestId)||(this.pendingSegment_.trackInfo=trackInfo,this.hasEnoughInfoToAppend_()&&this.processCallQueue_()))}handleTimingInfo_(simpleSegment,mediaType,timeType,time){if(this.earlyAbortWhenNeeded_(simpleSegment.stats),this.checkForAbort_(simpleSegment.requestId))return;const segmentInfo=this.pendingSegment_,timingInfoProperty=timingInfoPropertyForMedia(mediaType);segmentInfo[timingInfoProperty]=segmentInfo[timingInfoProperty]||{},segmentInfo[timingInfoProperty][timeType]=time,this.logger_("timinginfo: ".concat(mediaType," - ").concat(timeType," - ").concat(time)),this.hasEnoughInfoToAppend_()&&this.processCallQueue_()}handleCaptions_(simpleSegment,captionData){if(this.earlyAbortWhenNeeded_(simpleSegment.stats),this.checkForAbort_(simpleSegment.requestId))return;if(0===captionData.length)return void this.logger_("SegmentLoader received no captions from a caption event");if(!this.pendingSegment_.hasAppendedData_)return void this.metadataQueue_.caption.push(this.handleCaptions_.bind(this,simpleSegment,captionData));const timestampOffset=null===this.sourceUpdater_.videoTimestampOffset()?this.sourceUpdater_.audioTimestampOffset():this.sourceUpdater_.videoTimestampOffset(),captionTracks={};captionData.forEach((caption=>{captionTracks[caption.stream]=captionTracks[caption.stream]||{startTime:1/0,captions:[],endTime:0};const captionTrack=captionTracks[caption.stream];captionTrack.startTime=Math.min(captionTrack.startTime,caption.startTime+timestampOffset),captionTrack.endTime=Math.max(captionTrack.endTime,caption.endTime+timestampOffset),captionTrack.captions.push(caption)})),Object.keys(captionTracks).forEach((trackName=>{const{startTime:startTime,endTime:endTime,captions:captions}=captionTracks[trackName],inbandTextTracks=this.inbandTextTracks_;this.logger_("adding cues from ".concat(startTime," -> ").concat(endTime," for ").concat(trackName)),function(inbandTextTracks,tech,captionStream){if(!inbandTextTracks[captionStream]){tech.trigger({type:"usage",name:"vhs-608"});let instreamId=captionStream;/^cc708_/.test(captionStream)&&(instreamId="SERVICE"+captionStream.split("_")[1]);const track=tech.textTracks().getTrackById(instreamId);if(track)inbandTextTracks[captionStream]=track;else{let label=captionStream,language=captionStream,def=!1;const captionService=(tech.options_.vhs&&tech.options_.vhs.captionServices||{})[instreamId];captionService&&(label=captionService.label,language=captionService.language,def=captionService.default),inbandTextTracks[captionStream]=tech.addRemoteTextTrack({kind:"captions",id:instreamId,default:def,label:label,language:language},!1).track}}}(inbandTextTracks,this.vhs_.tech_,trackName),removeCuesFromTrack(startTime,endTime,inbandTextTracks[trackName]),function(_ref62){let{inbandTextTracks:inbandTextTracks,captionArray:captionArray,timestampOffset:timestampOffset}=_ref62;if(!captionArray)return;const Cue=window.WebKitDataCue||window.VTTCue;captionArray.forEach((caption=>{const track=caption.stream;caption.content?caption.content.forEach((value=>{const cue=new Cue(caption.startTime+timestampOffset,caption.endTime+timestampOffset,value.text);cue.line=value.line,cue.align="left",cue.position=value.position,cue.positionAlign="line-left",inbandTextTracks[track].addCue(cue)})):inbandTextTracks[track].addCue(new Cue(caption.startTime+timestampOffset,caption.endTime+timestampOffset,caption.text))}))}({captionArray:captions,inbandTextTracks:inbandTextTracks,timestampOffset:timestampOffset})})),this.transmuxer_&&this.transmuxer_.postMessage({action:"clearParsedMp4Captions"})}handleId3_(simpleSegment,id3Frames,dispatchType){if(this.earlyAbortWhenNeeded_(simpleSegment.stats),this.checkForAbort_(simpleSegment.requestId))return;this.pendingSegment_.hasAppendedData_?this.addMetadataToTextTrack(dispatchType,id3Frames,this.duration_()):this.metadataQueue_.id3.push(this.handleId3_.bind(this,simpleSegment,id3Frames,dispatchType))}processMetadataQueue_(){this.metadataQueue_.id3.forEach((fn=>fn())),this.metadataQueue_.caption.forEach((fn=>fn())),this.metadataQueue_.id3=[],this.metadataQueue_.caption=[]}processCallQueue_(){const callQueue=this.callQueue_;this.callQueue_=[],callQueue.forEach((fun=>fun()))}processLoadQueue_(){const loadQueue=this.loadQueue_;this.loadQueue_=[],loadQueue.forEach((fun=>fun()))}hasEnoughInfoToLoad_(){if("audio"!==this.loaderType_)return!0;const segmentInfo=this.pendingSegment_;return!!segmentInfo&&(!this.getCurrentMediaInfo_()||!shouldWaitForTimelineChange({timelineChangeController:this.timelineChangeController_,currentTimeline:this.currentTimeline_,segmentTimeline:segmentInfo.timeline,loaderType:this.loaderType_,audioDisabled:this.audioDisabled_}))}getCurrentMediaInfo_(){let segmentInfo=arguments.length>0&&void 0!==arguments[0]?arguments[0]:this.pendingSegment_;return segmentInfo&&segmentInfo.trackInfo||this.currentMediaInfo_}getMediaInfo_(){let segmentInfo=arguments.length>0&&void 0!==arguments[0]?arguments[0]:this.pendingSegment_;return this.getCurrentMediaInfo_(segmentInfo)||this.startingMediaInfo_}getPendingSegmentPlaylist(){return this.pendingSegment_?this.pendingSegment_.playlist:null}hasEnoughInfoToAppend_(){if(!this.sourceUpdater_.ready())return!1;if(this.waitingOnRemove_||this.quotaExceededErrorRetryTimeout_)return!1;const segmentInfo=this.pendingSegment_,trackInfo=this.getCurrentMediaInfo_();if(!segmentInfo||!trackInfo)return!1;const{hasAudio:hasAudio,hasVideo:hasVideo,isMuxed:isMuxed}=trackInfo;return!(hasVideo&&!segmentInfo.videoTimingInfo)&&(!(hasAudio&&!this.audioDisabled_&&!isMuxed&&!segmentInfo.audioTimingInfo)&&!shouldWaitForTimelineChange({timelineChangeController:this.timelineChangeController_,currentTimeline:this.currentTimeline_,segmentTimeline:segmentInfo.timeline,loaderType:this.loaderType_,audioDisabled:this.audioDisabled_}))}handleData_(simpleSegment,result){if(this.earlyAbortWhenNeeded_(simpleSegment.stats),this.checkForAbort_(simpleSegment.requestId))return;if(this.callQueue_.length||!this.hasEnoughInfoToAppend_())return void this.callQueue_.push(this.handleData_.bind(this,simpleSegment,result));const segmentInfo=this.pendingSegment_;if(this.setTimeMapping_(segmentInfo.timeline),this.updateMediaSecondsLoaded_(segmentInfo.part||segmentInfo.segment),"closed"!==this.mediaSource_.readyState){if(simpleSegment.map&&(simpleSegment.map=this.initSegmentForMap(simpleSegment.map,!0),segmentInfo.segment.map=simpleSegment.map),simpleSegment.key&&this.segmentKey(simpleSegment.key,!0),segmentInfo.isFmp4=simpleSegment.isFmp4,segmentInfo.timingInfo=segmentInfo.timingInfo||{},segmentInfo.isFmp4)this.trigger("fmp4"),segmentInfo.timingInfo.start=segmentInfo[timingInfoPropertyForMedia(result.type)].start;else{const trackInfo=this.getCurrentMediaInfo_(),useVideoTimingInfo="main"===this.loaderType_&&trackInfo&&trackInfo.hasVideo;let firstVideoFrameTimeForData;useVideoTimingInfo&&(firstVideoFrameTimeForData=segmentInfo.videoTimingInfo.start),segmentInfo.timingInfo.start=this.trueSegmentStart_({currentStart:segmentInfo.timingInfo.start,playlist:segmentInfo.playlist,mediaIndex:segmentInfo.mediaIndex,currentVideoTimestampOffset:this.sourceUpdater_.videoTimestampOffset(),useVideoTimingInfo:useVideoTimingInfo,firstVideoFrameTimeForData:firstVideoFrameTimeForData,videoTimingInfo:segmentInfo.videoTimingInfo,audioTimingInfo:segmentInfo.audioTimingInfo})}if(this.updateAppendInitSegmentStatus(segmentInfo,result.type),this.updateSourceBufferTimestampOffset_(segmentInfo),segmentInfo.isSyncRequest){this.updateTimingInfoEnd_(segmentInfo),this.syncController_.saveSegmentTimingInfo({segmentInfo:segmentInfo,shouldSaveTimelineMapping:"main"===this.loaderType_});const next=this.chooseNextRequest_();if(next.mediaIndex!==segmentInfo.mediaIndex||next.partIndex!==segmentInfo.partIndex)return void this.logger_("sync segment was incorrect, not appending");this.logger_("sync segment was correct, appending")}segmentInfo.hasAppendedData_=!0,this.processMetadataQueue_(),this.appendData_(segmentInfo,result)}}updateAppendInitSegmentStatus(segmentInfo,type){"main"!==this.loaderType_||"number"!=typeof segmentInfo.timestampOffset||segmentInfo.changedTimestampOffset||(this.appendInitSegment_={audio:!0,video:!0}),this.playlistOfLastInitSegment_[type]!==segmentInfo.playlist&&(this.appendInitSegment_[type]=!0)}getInitSegmentAndUpdateState_(_ref68){let{type:type,initSegment:initSegment,map:map,playlist:playlist}=_ref68;if(map){const id=initSegmentId(map);if(this.activeInitSegmentId_===id)return null;initSegment=this.initSegmentForMap(map,!0).bytes,this.activeInitSegmentId_=id}return initSegment&&this.appendInitSegment_[type]?(this.playlistOfLastInitSegment_[type]=playlist,this.appendInitSegment_[type]=!1,this.activeInitSegmentId_=null,initSegment):null}handleQuotaExceededError_(_ref69,error){let{segmentInfo:segmentInfo,type:type,bytes:bytes}=_ref69;const audioBuffered=this.sourceUpdater_.audioBuffered(),videoBuffered=this.sourceUpdater_.videoBuffered();audioBuffered.length>1&&this.logger_("On QUOTA_EXCEEDED_ERR, found gaps in the audio buffer: "+timeRangesToArray(audioBuffered).join(", ")),videoBuffered.length>1&&this.logger_("On QUOTA_EXCEEDED_ERR, found gaps in the video buffer: "+timeRangesToArray(videoBuffered).join(", "));const audioBufferStart=audioBuffered.length?audioBuffered.start(0):0,audioBufferEnd=audioBuffered.length?audioBuffered.end(audioBuffered.length-1):0,videoBufferStart=videoBuffered.length?videoBuffered.start(0):0,videoBufferEnd=videoBuffered.length?videoBuffered.end(videoBuffered.length-1):0;if(audioBufferEnd-audioBufferStart<=1&&videoBufferEnd-videoBufferStart<=1)return this.logger_("On QUOTA_EXCEEDED_ERR, single segment too large to append to buffer, triggering an error. "+"Appended byte length: ".concat(bytes.byteLength,", ")+"audio buffer: ".concat(timeRangesToArray(audioBuffered).join(", "),", ")+"video buffer: ".concat(timeRangesToArray(videoBuffered).join(", "),", ")),this.error({message:"Quota exceeded error with append of a single segment of content",excludeUntil:1/0}),void this.trigger("error");this.waitingOnRemove_=!0,this.callQueue_.push(this.appendToSourceBuffer_.bind(this,{segmentInfo:segmentInfo,type:type,bytes:bytes}));const timeToRemoveUntil=this.currentTime_()-1;this.logger_("On QUOTA_EXCEEDED_ERR, removing audio/video from 0 to ".concat(timeToRemoveUntil)),this.remove(0,timeToRemoveUntil,(()=>{this.logger_("On QUOTA_EXCEEDED_ERR, retrying append in ".concat(1,"s")),this.waitingOnRemove_=!1,this.quotaExceededErrorRetryTimeout_=window.setTimeout((()=>{this.logger_("On QUOTA_EXCEEDED_ERR, re-processing call queue"),this.quotaExceededErrorRetryTimeout_=null,this.processCallQueue_()}),1e3)}),!0)}handleAppendError_(_ref70,error){let{segmentInfo:segmentInfo,type:type,bytes:bytes}=_ref70;error&&(22!==error.code?(this.logger_("Received non QUOTA_EXCEEDED_ERR on append",error),this.error("".concat(type," append of ").concat(bytes.length,"b failed for segment ")+"#".concat(segmentInfo.mediaIndex," in playlist ").concat(segmentInfo.playlist.id)),this.trigger("appenderror")):this.handleQuotaExceededError_({segmentInfo:segmentInfo,type:type,bytes:bytes}))}appendToSourceBuffer_(_ref71){let{segmentInfo:segmentInfo,type:type,initSegment:initSegment,data:data,bytes:bytes}=_ref71;if(!bytes){const segments=[data];let byteLength=data.byteLength;initSegment&&(segments.unshift(initSegment),byteLength+=initSegment.byteLength),bytes=(segmentObj=>{let tempBuffer,offset=0;return segmentObj.bytes&&(tempBuffer=new Uint8Array(segmentObj.bytes),segmentObj.segments.forEach((segment=>{tempBuffer.set(segment,offset),offset+=segment.byteLength}))),tempBuffer})({bytes:byteLength,segments:segments})}this.sourceUpdater_.appendBuffer({segmentInfo:segmentInfo,type:type,bytes:bytes},this.handleAppendError_.bind(this,{segmentInfo:segmentInfo,type:type,bytes:bytes}))}handleSegmentTimingInfo_(type,requestId,segmentTimingInfo){if(!this.pendingSegment_||requestId!==this.pendingSegment_.requestId)return;const segment=this.pendingSegment_.segment,timingInfoProperty="".concat(type,"TimingInfo");segment[timingInfoProperty]||(segment[timingInfoProperty]={}),segment[timingInfoProperty].transmuxerPrependedSeconds=segmentTimingInfo.prependedContentDuration||0,segment[timingInfoProperty].transmuxedPresentationStart=segmentTimingInfo.start.presentation,segment[timingInfoProperty].transmuxedDecodeStart=segmentTimingInfo.start.decode,segment[timingInfoProperty].transmuxedPresentationEnd=segmentTimingInfo.end.presentation,segment[timingInfoProperty].transmuxedDecodeEnd=segmentTimingInfo.end.decode,segment[timingInfoProperty].baseMediaDecodeTime=segmentTimingInfo.baseMediaDecodeTime}appendData_(segmentInfo,result){const{type:type,data:data}=result;if(!data||!data.byteLength)return;if("audio"===type&&this.audioDisabled_)return;const initSegment=this.getInitSegmentAndUpdateState_({type:type,initSegment:result.initSegment,playlist:segmentInfo.playlist,map:segmentInfo.isFmp4?segmentInfo.segment.map:null});this.appendToSourceBuffer_({segmentInfo:segmentInfo,type:type,initSegment:initSegment,data:data})}loadSegment_(segmentInfo){this.state="WAITING",this.pendingSegment_=segmentInfo,this.trimBackBuffer_(segmentInfo),"number"==typeof segmentInfo.timestampOffset&&this.transmuxer_&&this.transmuxer_.postMessage({action:"clearAllMp4Captions"}),this.hasEnoughInfoToLoad_()?this.updateTransmuxerAndRequestSegment_(segmentInfo):this.loadQueue_.push((()=>{const options=_extends$1({},segmentInfo,{forceTimestampOffset:!0});_extends$1(segmentInfo,this.generateSegmentInfo_(options)),this.isPendingTimestampOffset_=!1,this.updateTransmuxerAndRequestSegment_(segmentInfo)}))}updateTransmuxerAndRequestSegment_(segmentInfo){this.shouldUpdateTransmuxerTimestampOffset_(segmentInfo.timestampOffset)&&(this.gopBuffer_.length=0,segmentInfo.gopsToAlignWith=[],this.timeMapping_=0,this.transmuxer_.postMessage({action:"reset"}),this.transmuxer_.postMessage({action:"setTimestampOffset",timestampOffset:segmentInfo.timestampOffset}));const simpleSegment=this.createSimplifiedSegmentObj_(segmentInfo),isEndOfStream=this.isEndOfStream_(segmentInfo.mediaIndex,segmentInfo.playlist,segmentInfo.partIndex),isWalkingForward=null!==this.mediaIndex,isDiscontinuity=segmentInfo.timeline!==this.currentTimeline_&&segmentInfo.timeline>0,isEndOfTimeline=isEndOfStream||isWalkingForward&&isDiscontinuity;this.logger_("Requesting ".concat(segmentInfoString(segmentInfo))),simpleSegment.map&&!simpleSegment.map.bytes&&(this.logger_("going to request init segment."),this.appendInitSegment_={video:!0,audio:!0}),segmentInfo.abortRequests=mediaSegmentRequest({xhr:this.vhs_.xhr,xhrOptions:this.xhrOptions_,decryptionWorker:this.decrypter_,segment:simpleSegment,abortFn:this.handleAbort_.bind(this,segmentInfo),progressFn:this.handleProgress_.bind(this),trackInfoFn:this.handleTrackInfo_.bind(this),timingInfoFn:this.handleTimingInfo_.bind(this),videoSegmentTimingInfoFn:this.handleSegmentTimingInfo_.bind(this,"video",segmentInfo.requestId),audioSegmentTimingInfoFn:this.handleSegmentTimingInfo_.bind(this,"audio",segmentInfo.requestId),captionsFn:this.handleCaptions_.bind(this),isEndOfTimeline:isEndOfTimeline,endedTimelineFn:()=>{this.logger_("received endedtimeline callback")},id3Fn:this.handleId3_.bind(this),dataFn:this.handleData_.bind(this),doneFn:this.segmentRequestFinished_.bind(this),onTransmuxerLog:_ref72=>{let{message:message,level:level,stream:stream}=_ref72;this.logger_("".concat(segmentInfoString(segmentInfo)," logged from transmuxer stream ").concat(stream," as a ").concat(level,": ").concat(message))}})}trimBackBuffer_(segmentInfo){const removeToTime=((seekable,currentTime,targetDuration)=>{let trimTime=currentTime-Config.BACK_BUFFER_LENGTH;seekable.length&&(trimTime=Math.max(trimTime,seekable.start(0)));const maxTrimTime=currentTime-targetDuration;return Math.min(maxTrimTime,trimTime)})(this.seekable_(),this.currentTime_(),this.playlist_.targetDuration||10);removeToTime>0&&this.remove(0,removeToTime)}createSimplifiedSegmentObj_(segmentInfo){const segment=segmentInfo.segment,part=segmentInfo.part,simpleSegment={resolvedUri:part?part.resolvedUri:segment.resolvedUri,byterange:part?part.byterange:segment.byterange,requestId:segmentInfo.requestId,transmuxer:segmentInfo.transmuxer,audioAppendStart:segmentInfo.audioAppendStart,gopsToAlignWith:segmentInfo.gopsToAlignWith,part:segmentInfo.part},previousSegment=segmentInfo.playlist.segments[segmentInfo.mediaIndex-1];if(previousSegment&&previousSegment.timeline===segment.timeline&&(previousSegment.videoTimingInfo?simpleSegment.baseStartTime=previousSegment.videoTimingInfo.transmuxedDecodeEnd:previousSegment.audioTimingInfo&&(simpleSegment.baseStartTime=previousSegment.audioTimingInfo.transmuxedDecodeEnd)),segment.key){const iv=segment.key.iv||new Uint32Array([0,0,0,segmentInfo.mediaIndex+segmentInfo.playlist.mediaSequence]);simpleSegment.key=this.segmentKey(segment.key),simpleSegment.key.iv=iv}return segment.map&&(simpleSegment.map=this.initSegmentForMap(segment.map)),simpleSegment}saveTransferStats_(stats){this.mediaRequests+=1,stats&&(this.mediaBytesTransferred+=stats.bytesReceived,this.mediaTransferDuration+=stats.roundTripTime)}saveBandwidthRelatedStats_(duration,stats){this.pendingSegment_.byteLength=stats.bytesReceived,duration<.016666666666666666?this.logger_("Ignoring segment's bandwidth because its duration of ".concat(duration)+" is less than the min to record ".concat(.016666666666666666)):(this.bandwidth=stats.bandwidth,this.roundTrip=stats.roundTripTime)}handleTimeout_(){this.mediaRequestsTimedout+=1,this.bandwidth=1,this.roundTrip=NaN,this.trigger("bandwidthupdate"),this.trigger("timeout")}segmentRequestFinished_(error,simpleSegment,result){if(this.callQueue_.length)return void this.callQueue_.push(this.segmentRequestFinished_.bind(this,error,simpleSegment,result));if(this.saveTransferStats_(simpleSegment.stats),!this.pendingSegment_)return;if(simpleSegment.requestId!==this.pendingSegment_.requestId)return;if(error){if(this.pendingSegment_=null,this.state="READY",error.code===REQUEST_ERRORS_ABORTED)return;return this.pause(),error.code===REQUEST_ERRORS_TIMEOUT?void this.handleTimeout_():(this.mediaRequestsErrored+=1,this.error(error),void this.trigger("error"))}const segmentInfo=this.pendingSegment_;this.saveBandwidthRelatedStats_(segmentInfo.duration,simpleSegment.stats),segmentInfo.endOfAllRequests=simpleSegment.endOfAllRequests,result.gopInfo&&(this.gopBuffer_=((buffer,gops,replace)=>{if(!gops.length)return buffer;if(replace)return gops.slice();const start=gops[0].pts;let i=0;for(;i<buffer.length&&!(buffer[i].pts>=start);i++);return buffer.slice(0,i).concat(gops)})(this.gopBuffer_,result.gopInfo,this.safeAppend_)),this.state="APPENDING",this.trigger("appending"),this.waitForAppendsToComplete_(segmentInfo)}setTimeMapping_(timeline){const timelineMapping=this.syncController_.mappingForTimeline(timeline);null!==timelineMapping&&(this.timeMapping_=timelineMapping)}updateMediaSecondsLoaded_(segment){"number"==typeof segment.start&&"number"==typeof segment.end?this.mediaSecondsLoaded+=segment.end-segment.start:this.mediaSecondsLoaded+=segment.duration}shouldUpdateTransmuxerTimestampOffset_(timestampOffset){return null!==timestampOffset&&("main"===this.loaderType_&&timestampOffset!==this.sourceUpdater_.videoTimestampOffset()||!this.audioDisabled_&&timestampOffset!==this.sourceUpdater_.audioTimestampOffset())}trueSegmentStart_(_ref73){let{currentStart:currentStart,playlist:playlist,mediaIndex:mediaIndex,firstVideoFrameTimeForData:firstVideoFrameTimeForData,currentVideoTimestampOffset:currentVideoTimestampOffset,useVideoTimingInfo:useVideoTimingInfo,videoTimingInfo:videoTimingInfo,audioTimingInfo:audioTimingInfo}=_ref73;if(void 0!==currentStart)return currentStart;if(!useVideoTimingInfo)return audioTimingInfo.start;const previousSegment=playlist.segments[mediaIndex-1];return 0!==mediaIndex&&previousSegment&&void 0!==previousSegment.start&&previousSegment.end===firstVideoFrameTimeForData+currentVideoTimestampOffset?videoTimingInfo.start:firstVideoFrameTimeForData}waitForAppendsToComplete_(segmentInfo){const trackInfo=this.getCurrentMediaInfo_(segmentInfo);if(!trackInfo)return this.error({message:"No starting media returned, likely due to an unsupported media format.",playlistExclusionDuration:1/0}),void this.trigger("error");const{hasAudio:hasAudio,hasVideo:hasVideo,isMuxed:isMuxed}=trackInfo,waitForVideo="main"===this.loaderType_&&hasVideo,waitForAudio=!this.audioDisabled_&&hasAudio&&!isMuxed;if(segmentInfo.waitingOnAppends=0,!segmentInfo.hasAppendedData_)return segmentInfo.timingInfo||"number"!=typeof segmentInfo.timestampOffset||(this.isPendingTimestampOffset_=!0),segmentInfo.timingInfo={start:0},segmentInfo.waitingOnAppends++,this.isPendingTimestampOffset_||(this.updateSourceBufferTimestampOffset_(segmentInfo),this.processMetadataQueue_()),void this.checkAppendsDone_(segmentInfo);waitForVideo&&segmentInfo.waitingOnAppends++,waitForAudio&&segmentInfo.waitingOnAppends++,waitForVideo&&this.sourceUpdater_.videoQueueCallback(this.checkAppendsDone_.bind(this,segmentInfo)),waitForAudio&&this.sourceUpdater_.audioQueueCallback(this.checkAppendsDone_.bind(this,segmentInfo))}checkAppendsDone_(segmentInfo){this.checkForAbort_(segmentInfo.requestId)||(segmentInfo.waitingOnAppends--,0===segmentInfo.waitingOnAppends&&this.handleAppendsDone_())}checkForIllegalMediaSwitch(trackInfo){const illegalMediaSwitchError=((loaderType,startingMedia,trackInfo)=>"main"===loaderType&&startingMedia&&trackInfo?trackInfo.hasAudio||trackInfo.hasVideo?startingMedia.hasVideo&&!trackInfo.hasVideo?"Only audio found in segment when we expected video. We can't switch to audio only from a stream that had video. To get rid of this message, please add codec information to the manifest.":!startingMedia.hasVideo&&trackInfo.hasVideo?"Video found in segment when we expected only audio. We can't switch to a stream with video from an audio only stream. To get rid of this message, please add codec information to the manifest.":null:"Neither audio nor video found in segment.":null)(this.loaderType_,this.getCurrentMediaInfo_(),trackInfo);return!!illegalMediaSwitchError&&(this.error({message:illegalMediaSwitchError,playlistExclusionDuration:1/0}),this.trigger("error"),!0)}updateSourceBufferTimestampOffset_(segmentInfo){if(null===segmentInfo.timestampOffset||"number"!=typeof segmentInfo.timingInfo.start||segmentInfo.changedTimestampOffset||"main"!==this.loaderType_)return;let didChange=!1;segmentInfo.timestampOffset-=this.getSegmentStartTimeForTimestampOffsetCalculation_({videoTimingInfo:segmentInfo.segment.videoTimingInfo,audioTimingInfo:segmentInfo.segment.audioTimingInfo,timingInfo:segmentInfo.timingInfo}),segmentInfo.changedTimestampOffset=!0,segmentInfo.timestampOffset!==this.sourceUpdater_.videoTimestampOffset()&&(this.sourceUpdater_.videoTimestampOffset(segmentInfo.timestampOffset),didChange=!0),segmentInfo.timestampOffset!==this.sourceUpdater_.audioTimestampOffset()&&(this.sourceUpdater_.audioTimestampOffset(segmentInfo.timestampOffset),didChange=!0),didChange&&this.trigger("timestampoffset")}getSegmentStartTimeForTimestampOffsetCalculation_(_ref74){let{videoTimingInfo:videoTimingInfo,audioTimingInfo:audioTimingInfo,timingInfo:timingInfo}=_ref74;return this.useDtsForTimestampOffset_?videoTimingInfo&&"number"==typeof videoTimingInfo.transmuxedDecodeStart?videoTimingInfo.transmuxedDecodeStart:audioTimingInfo&&"number"==typeof audioTimingInfo.transmuxedDecodeStart?audioTimingInfo.transmuxedDecodeStart:timingInfo.start:timingInfo.start}updateTimingInfoEnd_(segmentInfo){segmentInfo.timingInfo=segmentInfo.timingInfo||{};const trackInfo=this.getMediaInfo_(),prioritizedTimingInfo="main"===this.loaderType_&&trackInfo&&trackInfo.hasVideo&&segmentInfo.videoTimingInfo?segmentInfo.videoTimingInfo:segmentInfo.audioTimingInfo;prioritizedTimingInfo&&(segmentInfo.timingInfo.end="number"==typeof prioritizedTimingInfo.end?prioritizedTimingInfo.end:prioritizedTimingInfo.start+segmentInfo.duration)}handleAppendsDone_(){if(this.pendingSegment_&&this.trigger("appendsdone"),!this.pendingSegment_)return this.state="READY",void(this.paused()||this.monitorBuffer_());const segmentInfo=this.pendingSegment_;this.updateTimingInfoEnd_(segmentInfo),this.shouldSaveSegmentTimingInfo_&&this.syncController_.saveSegmentTimingInfo({segmentInfo:segmentInfo,shouldSaveTimelineMapping:"main"===this.loaderType_});const segmentDurationMessage=getTroublesomeSegmentDurationMessage(segmentInfo,this.sourceType_);if(segmentDurationMessage&&("warn"===segmentDurationMessage.severity?videojs.log.warn(segmentDurationMessage.message):this.logger_(segmentDurationMessage.message)),this.recordThroughput_(segmentInfo),this.pendingSegment_=null,this.state="READY",segmentInfo.isSyncRequest&&(this.trigger("syncinfoupdate"),!segmentInfo.hasAppendedData_))return void this.logger_("Throwing away un-appended sync request ".concat(segmentInfoString(segmentInfo)));this.logger_("Appended ".concat(segmentInfoString(segmentInfo))),this.addSegmentMetadataCue_(segmentInfo),this.fetchAtBuffer_=!0,this.currentTimeline_!==segmentInfo.timeline&&(this.timelineChangeController_.lastTimelineChange({type:this.loaderType_,from:this.currentTimeline_,to:segmentInfo.timeline}),"main"!==this.loaderType_||this.audioDisabled_||this.timelineChangeController_.lastTimelineChange({type:"audio",from:this.currentTimeline_,to:segmentInfo.timeline})),this.currentTimeline_=segmentInfo.timeline,this.trigger("syncinfoupdate");const segment=segmentInfo.segment,part=segmentInfo.part,badSegmentGuess=segment.end&&this.currentTime_()-segment.end>3*segmentInfo.playlist.targetDuration,badPartGuess=part&&part.end&&this.currentTime_()-part.end>3*segmentInfo.playlist.partTargetDuration;if(badSegmentGuess||badPartGuess)return this.logger_("bad ".concat(badSegmentGuess?"segment":"part"," ").concat(segmentInfoString(segmentInfo))),void this.resetEverything();null!==this.mediaIndex&&this.trigger("bandwidthupdate"),this.trigger("progress"),this.mediaIndex=segmentInfo.mediaIndex,this.partIndex=segmentInfo.partIndex,this.isEndOfStream_(segmentInfo.mediaIndex,segmentInfo.playlist,segmentInfo.partIndex)&&this.endOfStream(),this.trigger("appended"),segmentInfo.hasAppendedData_&&this.mediaAppends++,this.paused()||this.monitorBuffer_()}recordThroughput_(segmentInfo){if(segmentInfo.duration<.016666666666666666)return void this.logger_("Ignoring segment's throughput because its duration of ".concat(segmentInfo.duration)+" is less than the min to record ".concat(.016666666666666666));const rate=this.throughput.rate,segmentProcessingTime=Date.now()-segmentInfo.endOfAllRequests+1,segmentProcessingThroughput=Math.floor(segmentInfo.byteLength/segmentProcessingTime*8*1e3);this.throughput.rate+=(segmentProcessingThroughput-rate)/++this.throughput.count}addSegmentMetadataCue_(segmentInfo){if(!this.segmentMetadataTrack_)return;const segment=segmentInfo.segment,start=segment.start,end=segment.end;if(!finite(start)||!finite(end))return;removeCuesFromTrack(start,end,this.segmentMetadataTrack_);const Cue=window.WebKitDataCue||window.VTTCue,value={custom:segment.custom,dateTimeObject:segment.dateTimeObject,dateTimeString:segment.dateTimeString,programDateTime:segment.programDateTime,bandwidth:segmentInfo.playlist.attributes.BANDWIDTH,resolution:segmentInfo.playlist.attributes.RESOLUTION,codecs:segmentInfo.playlist.attributes.CODECS,byteLength:segmentInfo.byteLength,uri:segmentInfo.uri,timeline:segmentInfo.timeline,playlist:segmentInfo.playlist.id,start:start,end:end},cue=new Cue(start,end,JSON.stringify(value));cue.value=value,this.segmentMetadataTrack_.addCue(cue)}}function noop(){}const toTitleCase=function(string){return"string"!=typeof string?string:string.replace(/./,(w=>w.toUpperCase()))},bufferTypes=["video","audio"],updating=(type,sourceUpdater)=>{const sourceBuffer=sourceUpdater["".concat(type,"Buffer")];return sourceBuffer&&sourceBuffer.updating||sourceUpdater.queuePending[type]},shiftQueue=(type,sourceUpdater)=>{if(0===sourceUpdater.queue.length)return;let queueIndex=0,queueEntry=sourceUpdater.queue[queueIndex];if("mediaSource"!==queueEntry.type){if("mediaSource"!==type&&sourceUpdater.ready()&&"closed"!==sourceUpdater.mediaSource.readyState&&!updating(type,sourceUpdater)){if(queueEntry.type!==type){if(queueIndex=((type,queue)=>{for(let i=0;i<queue.length;i++){const queueEntry=queue[i];if("mediaSource"===queueEntry.type)return null;if(queueEntry.type===type)return i}return null})(type,sourceUpdater.queue),null===queueIndex)return;queueEntry=sourceUpdater.queue[queueIndex]}return sourceUpdater.queue.splice(queueIndex,1),sourceUpdater.queuePending[type]=queueEntry,queueEntry.action(type,sourceUpdater),queueEntry.doneFn?void 0:(sourceUpdater.queuePending[type]=null,void shiftQueue(type,sourceUpdater))}}else sourceUpdater.updating()||"closed"===sourceUpdater.mediaSource.readyState||(sourceUpdater.queue.shift(),queueEntry.action(sourceUpdater),queueEntry.doneFn&&queueEntry.doneFn(),shiftQueue("audio",sourceUpdater),shiftQueue("video",sourceUpdater))},cleanupBuffer=(type,sourceUpdater)=>{const buffer=sourceUpdater["".concat(type,"Buffer")],titleType=toTitleCase(type);buffer&&(buffer.removeEventListener("updateend",sourceUpdater["on".concat(titleType,"UpdateEnd_")]),buffer.removeEventListener("error",sourceUpdater["on".concat(titleType,"Error_")]),sourceUpdater.codecs[type]=null,sourceUpdater["".concat(type,"Buffer")]=null)},inSourceBuffers=(mediaSource,sourceBuffer)=>mediaSource&&sourceBuffer&&-1!==Array.prototype.indexOf.call(mediaSource.sourceBuffers,sourceBuffer),actions_appendBuffer=(bytes,segmentInfo,onError)=>(type,sourceUpdater)=>{const sourceBuffer=sourceUpdater["".concat(type,"Buffer")];if(inSourceBuffers(sourceUpdater.mediaSource,sourceBuffer)){sourceUpdater.logger_("Appending segment ".concat(segmentInfo.mediaIndex,"'s ").concat(bytes.length," bytes to ").concat(type,"Buffer"));try{sourceBuffer.appendBuffer(bytes)}catch(e){sourceUpdater.logger_("Error with code ".concat(e.code," ")+(22===e.code?"(QUOTA_EXCEEDED_ERR) ":"")+"when appending segment ".concat(segmentInfo.mediaIndex," to ").concat(type,"Buffer")),sourceUpdater.queuePending[type]=null,onError(e)}}},actions_remove=(start,end)=>(type,sourceUpdater)=>{const sourceBuffer=sourceUpdater["".concat(type,"Buffer")];if(inSourceBuffers(sourceUpdater.mediaSource,sourceBuffer)){sourceUpdater.logger_("Removing ".concat(start," to ").concat(end," from ").concat(type,"Buffer"));try{sourceBuffer.remove(start,end)}catch(e){sourceUpdater.logger_("Remove ".concat(start," to ").concat(end," from ").concat(type,"Buffer failed"))}}},actions_timestampOffset=offset=>(type,sourceUpdater)=>{const sourceBuffer=sourceUpdater["".concat(type,"Buffer")];inSourceBuffers(sourceUpdater.mediaSource,sourceBuffer)&&(sourceUpdater.logger_("Setting ".concat(type,"timestampOffset to ").concat(offset)),sourceBuffer.timestampOffset=offset)},actions_callback=callback=>(type,sourceUpdater)=>{callback()},actions_endOfStream=error=>sourceUpdater=>{if("open"===sourceUpdater.mediaSource.readyState){sourceUpdater.logger_("Calling mediaSource endOfStream(".concat(error||"",")"));try{sourceUpdater.mediaSource.endOfStream(error)}catch(e){videojs.log.warn("Failed to call media source endOfStream",e)}}},actions_duration=duration=>sourceUpdater=>{sourceUpdater.logger_("Setting mediaSource duration to ".concat(duration));try{sourceUpdater.mediaSource.duration=duration}catch(e){videojs.log.warn("Failed to set media source duration",e)}},actions_abort=()=>(type,sourceUpdater)=>{if("open"!==sourceUpdater.mediaSource.readyState)return;const sourceBuffer=sourceUpdater["".concat(type,"Buffer")];if(inSourceBuffers(sourceUpdater.mediaSource,sourceBuffer)){sourceUpdater.logger_("calling abort on ".concat(type,"Buffer"));try{sourceBuffer.abort()}catch(e){videojs.log.warn("Failed to abort on ".concat(type,"Buffer"),e)}}},actions_addSourceBuffer=(type,codec)=>sourceUpdater=>{const titleType=toTitleCase(type),mime=getMimeForCodec(codec);sourceUpdater.logger_("Adding ".concat(type,"Buffer with codec ").concat(codec," to mediaSource"));const sourceBuffer=sourceUpdater.mediaSource.addSourceBuffer(mime);sourceBuffer.addEventListener("updateend",sourceUpdater["on".concat(titleType,"UpdateEnd_")]),sourceBuffer.addEventListener("error",sourceUpdater["on".concat(titleType,"Error_")]),sourceUpdater.codecs[type]=codec,sourceUpdater["".concat(type,"Buffer")]=sourceBuffer},actions_removeSourceBuffer=type=>sourceUpdater=>{const sourceBuffer=sourceUpdater["".concat(type,"Buffer")];if(cleanupBuffer(type,sourceUpdater),inSourceBuffers(sourceUpdater.mediaSource,sourceBuffer)){sourceUpdater.logger_("Removing ".concat(type,"Buffer with codec ").concat(sourceUpdater.codecs[type]," from mediaSource"));try{sourceUpdater.mediaSource.removeSourceBuffer(sourceBuffer)}catch(e){videojs.log.warn("Failed to removeSourceBuffer ".concat(type,"Buffer"),e)}}},actions_changeType=codec=>(type,sourceUpdater)=>{const sourceBuffer=sourceUpdater["".concat(type,"Buffer")],mime=getMimeForCodec(codec);if(inSourceBuffers(sourceUpdater.mediaSource,sourceBuffer)&&sourceUpdater.codecs[type]!==codec){sourceUpdater.logger_("changing ".concat(type,"Buffer codec from ").concat(sourceUpdater.codecs[type]," to ").concat(codec));try{sourceBuffer.changeType(mime),sourceUpdater.codecs[type]=codec}catch(e){videojs.log.warn("Failed to changeType on ".concat(type,"Buffer"),e)}}},pushQueue=_ref75=>{let{type:type,sourceUpdater:sourceUpdater,action:action,doneFn:doneFn,name:name}=_ref75;sourceUpdater.queue.push({type:type,action:action,doneFn:doneFn,name:name}),shiftQueue(type,sourceUpdater)},onUpdateend=(type,sourceUpdater)=>e=>{if(sourceUpdater.queuePending[type]){const doneFn=sourceUpdater.queuePending[type].doneFn;sourceUpdater.queuePending[type]=null,doneFn&&doneFn(sourceUpdater["".concat(type,"Error_")])}shiftQueue(type,sourceUpdater)};class SourceUpdater extends videojs.EventTarget{constructor(mediaSource){super(),this.mediaSource=mediaSource,this.sourceopenListener_=()=>shiftQueue("mediaSource",this),this.mediaSource.addEventListener("sourceopen",this.sourceopenListener_),this.logger_=logger("SourceUpdater"),this.audioTimestampOffset_=0,this.videoTimestampOffset_=0,this.queue=[],this.queuePending={audio:null,video:null},this.delayedAudioAppendQueue_=[],this.videoAppendQueued_=!1,this.codecs={},this.onVideoUpdateEnd_=onUpdateend("video",this),this.onAudioUpdateEnd_=onUpdateend("audio",this),this.onVideoError_=e=>{this.videoError_=e},this.onAudioError_=e=>{this.audioError_=e},this.createdSourceBuffers_=!1,this.initializedEme_=!1,this.triggeredReady_=!1}initializedEme(){this.initializedEme_=!0,this.triggerReady()}hasCreatedSourceBuffers(){return this.createdSourceBuffers_}hasInitializedAnyEme(){return this.initializedEme_}ready(){return this.hasCreatedSourceBuffers()&&this.hasInitializedAnyEme()}createSourceBuffers(codecs){this.hasCreatedSourceBuffers()||(this.addOrChangeSourceBuffers(codecs),this.createdSourceBuffers_=!0,this.trigger("createdsourcebuffers"),this.triggerReady())}triggerReady(){this.ready()&&!this.triggeredReady_&&(this.triggeredReady_=!0,this.trigger("ready"))}addSourceBuffer(type,codec){pushQueue({type:"mediaSource",sourceUpdater:this,action:actions_addSourceBuffer(type,codec),name:"addSourceBuffer"})}abort(type){pushQueue({type:type,sourceUpdater:this,action:actions_abort(type),name:"abort"})}removeSourceBuffer(type){this.canRemoveSourceBuffer()?pushQueue({type:"mediaSource",sourceUpdater:this,action:actions_removeSourceBuffer(type),name:"removeSourceBuffer"}):videojs.log.error("removeSourceBuffer is not supported!")}canRemoveSourceBuffer(){return!videojs.browser.IS_FIREFOX&&window.MediaSource&&window.MediaSource.prototype&&"function"==typeof window.MediaSource.prototype.removeSourceBuffer}static canChangeType(){return window.SourceBuffer&&window.SourceBuffer.prototype&&"function"==typeof window.SourceBuffer.prototype.changeType}canChangeType(){return this.constructor.canChangeType()}changeType(type,codec){this.canChangeType()?pushQueue({type:type,sourceUpdater:this,action:actions_changeType(codec),name:"changeType"}):videojs.log.error("changeType is not supported!")}addOrChangeSourceBuffers(codecs){if(!codecs||"object"!=typeof codecs||0===Object.keys(codecs).length)throw new Error("Cannot addOrChangeSourceBuffers to undefined codecs");Object.keys(codecs).forEach((type=>{const codec=codecs[type];if(!this.hasCreatedSourceBuffers())return this.addSourceBuffer(type,codec);this.canChangeType()&&this.changeType(type,codec)}))}appendBuffer(options,doneFn){const{segmentInfo:segmentInfo,type:type,bytes:bytes}=options;if(this.processedAppend_=!0,"audio"===type&&this.videoBuffer&&!this.videoAppendQueued_)return this.delayedAudioAppendQueue_.push([options,doneFn]),void this.logger_("delayed audio append of ".concat(bytes.length," until video append"));if(pushQueue({type:type,sourceUpdater:this,action:actions_appendBuffer(bytes,segmentInfo||{mediaIndex:-1},doneFn),doneFn:doneFn,name:"appendBuffer"}),"video"===type){if(this.videoAppendQueued_=!0,!this.delayedAudioAppendQueue_.length)return;const queue=this.delayedAudioAppendQueue_.slice();this.logger_("queuing delayed audio ".concat(queue.length," appendBuffers")),this.delayedAudioAppendQueue_.length=0,queue.forEach((que=>{this.appendBuffer.apply(this,que)}))}}audioBuffered(){return inSourceBuffers(this.mediaSource,this.audioBuffer)&&this.audioBuffer.buffered?this.audioBuffer.buffered:createTimeRanges()}videoBuffered(){return inSourceBuffers(this.mediaSource,this.videoBuffer)&&this.videoBuffer.buffered?this.videoBuffer.buffered:createTimeRanges()}buffered(){const video=inSourceBuffers(this.mediaSource,this.videoBuffer)?this.videoBuffer:null,audio=inSourceBuffers(this.mediaSource,this.audioBuffer)?this.audioBuffer:null;return audio&&!video?this.audioBuffered():video&&!audio?this.videoBuffered():function(bufferA,bufferB){let start=null,end=null,arity=0;const extents=[],ranges=[];if(!(bufferA&&bufferA.length&&bufferB&&bufferB.length))return createTimeRanges();let count=bufferA.length;for(;count--;)extents.push({time:bufferA.start(count),type:"start"}),extents.push({time:bufferA.end(count),type:"end"});for(count=bufferB.length;count--;)extents.push({time:bufferB.start(count),type:"start"}),extents.push({time:bufferB.end(count),type:"end"});for(extents.sort((function(a,b){return a.time-b.time})),count=0;count<extents.length;count++)"start"===extents[count].type?(arity++,2===arity&&(start=extents[count].time)):"end"===extents[count].type&&(arity--,1===arity&&(end=extents[count].time)),null!==start&&null!==end&&(ranges.push([start,end]),start=null,end=null);return createTimeRanges(ranges)}(this.audioBuffered(),this.videoBuffered())}setDuration(duration){let doneFn=arguments.length>1&&void 0!==arguments[1]?arguments[1]:noop;pushQueue({type:"mediaSource",sourceUpdater:this,action:actions_duration(duration),name:"duration",doneFn:doneFn})}endOfStream(){let error=arguments.length>0&&void 0!==arguments[0]?arguments[0]:null,doneFn=arguments.length>1&&void 0!==arguments[1]?arguments[1]:noop;"string"!=typeof error&&(error=void 0),pushQueue({type:"mediaSource",sourceUpdater:this,action:actions_endOfStream(error),name:"endOfStream",doneFn:doneFn})}removeAudio(start,end){let done=arguments.length>2&&void 0!==arguments[2]?arguments[2]:noop;this.audioBuffered().length&&0!==this.audioBuffered().end(0)?pushQueue({type:"audio",sourceUpdater:this,action:actions_remove(start,end),doneFn:done,name:"remove"}):done()}removeVideo(start,end){let done=arguments.length>2&&void 0!==arguments[2]?arguments[2]:noop;this.videoBuffered().length&&0!==this.videoBuffered().end(0)?pushQueue({type:"video",sourceUpdater:this,action:actions_remove(start,end),doneFn:done,name:"remove"}):done()}updating(){return!(!updating("audio",this)&&!updating("video",this))}audioTimestampOffset(offset){return void 0!==offset&&this.audioBuffer&&this.audioTimestampOffset_!==offset&&(pushQueue({type:"audio",sourceUpdater:this,action:actions_timestampOffset(offset),name:"timestampOffset"}),this.audioTimestampOffset_=offset),this.audioTimestampOffset_}videoTimestampOffset(offset){return void 0!==offset&&this.videoBuffer&&this.videoTimestampOffset!==offset&&(pushQueue({type:"video",sourceUpdater:this,action:actions_timestampOffset(offset),name:"timestampOffset"}),this.videoTimestampOffset_=offset),this.videoTimestampOffset_}audioQueueCallback(callback){this.audioBuffer&&pushQueue({type:"audio",sourceUpdater:this,action:actions_callback(callback),name:"callback"})}videoQueueCallback(callback){this.videoBuffer&&pushQueue({type:"video",sourceUpdater:this,action:actions_callback(callback),name:"callback"})}dispose(){this.trigger("dispose"),bufferTypes.forEach((type=>{this.abort(type),this.canRemoveSourceBuffer()?this.removeSourceBuffer(type):this["".concat(type,"QueueCallback")]((()=>cleanupBuffer(type,this)))})),this.videoAppendQueued_=!1,this.delayedAudioAppendQueue_.length=0,this.sourceopenListener_&&this.mediaSource.removeEventListener("sourceopen",this.sourceopenListener_),this.off()}}const uint8ToUtf8=uintArray=>decodeURIComponent(escape(String.fromCharCode.apply(null,uintArray))),VTT_LINE_TERMINATORS=new Uint8Array("\n\n".split("").map((char=>char.charCodeAt(0))));class NoVttJsError extends Error{constructor(){super("Trying to parse received VTT cues, but there is no WebVTT. Make sure vtt.js is loaded.")}}class VTTSegmentLoader extends SegmentLoader{constructor(settings){super(settings,arguments.length>1&&void 0!==arguments[1]?arguments[1]:{}),this.mediaSource_=null,this.subtitlesTrack_=null,this.loaderType_="subtitle",this.featuresNativeTextTracks_=settings.featuresNativeTextTracks,this.loadVttJs=settings.loadVttJs,this.shouldSaveSegmentTimingInfo_=!1}createTransmuxer_(){return null}buffered_(){if(!this.subtitlesTrack_||!this.subtitlesTrack_.cues||!this.subtitlesTrack_.cues.length)return createTimeRanges();const cues=this.subtitlesTrack_.cues;return createTimeRanges([[cues[0].startTime,cues[cues.length-1].startTime]])}initSegmentForMap(map){let set=arguments.length>1&&void 0!==arguments[1]&&arguments[1];if(!map)return null;const id=initSegmentId(map);let storedMap=this.initSegments_[id];if(set&&!storedMap&&map.bytes){const combinedByteLength=VTT_LINE_TERMINATORS.byteLength+map.bytes.byteLength,combinedSegment=new Uint8Array(combinedByteLength);combinedSegment.set(map.bytes),combinedSegment.set(VTT_LINE_TERMINATORS,map.bytes.byteLength),this.initSegments_[id]=storedMap={resolvedUri:map.resolvedUri,byterange:map.byterange,bytes:combinedSegment}}return storedMap||map}couldBeginLoading_(){return this.playlist_&&this.subtitlesTrack_&&!this.paused()}init_(){return this.state="READY",this.resetEverything(),this.monitorBuffer_()}track(track){return void 0===track||(this.subtitlesTrack_=track,"INIT"===this.state&&this.couldBeginLoading_()&&this.init_()),this.subtitlesTrack_}remove(start,end){removeCuesFromTrack(start,end,this.subtitlesTrack_)}fillBuffer_(){const segmentInfo=this.chooseNextRequest_();if(segmentInfo){if(null===this.syncController_.timestampOffsetForTimeline(segmentInfo.timeline)){const checkTimestampOffset=()=>{this.state="READY",this.paused()||this.monitorBuffer_()};return this.syncController_.one("timestampoffset",checkTimestampOffset),void(this.state="WAITING_ON_TIMELINE")}this.loadSegment_(segmentInfo)}}timestampOffsetForSegment_(){return null}chooseNextRequest_(){return this.skipEmptySegments_(super.chooseNextRequest_())}skipEmptySegments_(segmentInfo){for(;segmentInfo&&segmentInfo.segment.empty;){if(segmentInfo.mediaIndex+1>=segmentInfo.playlist.segments.length){segmentInfo=null;break}segmentInfo=this.generateSegmentInfo_({playlist:segmentInfo.playlist,mediaIndex:segmentInfo.mediaIndex+1,startOfSegment:segmentInfo.startOfSegment+segmentInfo.duration,isSyncRequest:segmentInfo.isSyncRequest})}return segmentInfo}stopForError(error){this.error(error),this.state="READY",this.pause(),this.trigger("error")}segmentRequestFinished_(error,simpleSegment,result){if(!this.subtitlesTrack_)return void(this.state="READY");if(this.saveTransferStats_(simpleSegment.stats),!this.pendingSegment_)return this.state="READY",void(this.mediaRequestsAborted+=1);if(error)return error.code===REQUEST_ERRORS_TIMEOUT&&this.handleTimeout_(),error.code===REQUEST_ERRORS_ABORTED?this.mediaRequestsAborted+=1:this.mediaRequestsErrored+=1,void this.stopForError(error);const segmentInfo=this.pendingSegment_;this.saveBandwidthRelatedStats_(segmentInfo.duration,simpleSegment.stats),simpleSegment.key&&this.segmentKey(simpleSegment.key,!0),this.state="APPENDING",this.trigger("appending");const segment=segmentInfo.segment;if(segment.map&&(segment.map.bytes=simpleSegment.map.bytes),segmentInfo.bytes=simpleSegment.bytes,"function"!=typeof window.WebVTT&&"function"==typeof this.loadVttJs)return this.state="WAITING_ON_VTTJS",void this.loadVttJs().then((()=>this.segmentRequestFinished_(error,simpleSegment,result)),(()=>this.stopForError({message:"Error loading vtt.js"})));segment.requested=!0;try{this.parseVTTCues_(segmentInfo)}catch(e){return void this.stopForError({message:e.message})}if(this.updateTimeMapping_(segmentInfo,this.syncController_.timelines[segmentInfo.timeline],this.playlist_),segmentInfo.cues.length?segmentInfo.timingInfo={start:segmentInfo.cues[0].startTime,end:segmentInfo.cues[segmentInfo.cues.length-1].endTime}:segmentInfo.timingInfo={start:segmentInfo.startOfSegment,end:segmentInfo.startOfSegment+segmentInfo.duration},segmentInfo.isSyncRequest)return this.trigger("syncinfoupdate"),this.pendingSegment_=null,void(this.state="READY");segmentInfo.byteLength=segmentInfo.bytes.byteLength,this.mediaSecondsLoaded+=segment.duration,segmentInfo.cues.forEach((cue=>{this.subtitlesTrack_.addCue(this.featuresNativeTextTracks_?new window.VTTCue(cue.startTime,cue.endTime,cue.text):cue)})),function(track){const cues=track.cues;if(!cues)return;const uniqueCues={};for(let i=cues.length-1;i>=0;i--){const cue=cues[i],cueKey="".concat(cue.startTime,"-").concat(cue.endTime,"-").concat(cue.text);uniqueCues[cueKey]?track.removeCue(cue):uniqueCues[cueKey]=cue}}(this.subtitlesTrack_),this.handleAppendsDone_()}handleData_(){}updateTimingInfoEnd_(){}parseVTTCues_(segmentInfo){let decoder,decodeBytesToString=!1;if("function"!=typeof window.WebVTT)throw new NoVttJsError;"function"==typeof window.TextDecoder?decoder=new window.TextDecoder("utf8"):(decoder=window.WebVTT.StringDecoder(),decodeBytesToString=!0);const parser=new window.WebVTT.Parser(window,window.vttjs,decoder);if(segmentInfo.cues=[],segmentInfo.timestampmap={MPEGTS:0,LOCAL:0},parser.oncue=segmentInfo.cues.push.bind(segmentInfo.cues),parser.ontimestampmap=map=>{segmentInfo.timestampmap=map},parser.onparsingerror=error=>{videojs.log.warn("Error encountered when parsing cues: "+error.message)},segmentInfo.segment.map){let mapData=segmentInfo.segment.map.bytes;decodeBytesToString&&(mapData=uint8ToUtf8(mapData)),parser.parse(mapData)}let segmentData=segmentInfo.bytes;decodeBytesToString&&(segmentData=uint8ToUtf8(segmentData)),parser.parse(segmentData),parser.flush()}updateTimeMapping_(segmentInfo,mappingObj,playlist){const segment=segmentInfo.segment;if(!mappingObj)return;if(!segmentInfo.cues.length)return void(segment.empty=!0);const{MPEGTS:MPEGTS,LOCAL:LOCAL}=segmentInfo.timestampmap,diff=MPEGTS/clock_1-LOCAL+mappingObj.mapping;if(segmentInfo.cues.forEach((cue=>{const duration=cue.endTime-cue.startTime,startTime=0===MPEGTS?cue.startTime+diff:this.handleRollover_(cue.startTime+diff,mappingObj.time);cue.startTime=Math.max(startTime,0),cue.endTime=Math.max(startTime+duration,0)})),!playlist.syncInfo){const firstStart=segmentInfo.cues[0].startTime,lastStart=segmentInfo.cues[segmentInfo.cues.length-1].startTime;playlist.syncInfo={mediaSequence:playlist.mediaSequence+segmentInfo.mediaIndex,time:Math.min(firstStart,lastStart-segment.duration)}}}handleRollover_(value,reference){if(null===reference)return value;let valueIn90khz=value*clock_1;const referenceIn90khz=reference*clock_1;let offset;for(offset=referenceIn90khz<valueIn90khz?-8589934592:8589934592;Math.abs(valueIn90khz-referenceIn90khz)>4294967296;)valueIn90khz+=offset;return valueIn90khz/clock_1}}const findAdCue=function(track,mediaTime){const cues=track.cues;for(let i=0;i<cues.length;i++){const cue=cues[i];if(mediaTime>=cue.adStartTime&&mediaTime<=cue.adEndTime)return cue}return null},syncPointStrategies=[{name:"VOD",run:(syncController,playlist,duration,currentTimeline,currentTime)=>{if(duration!==1/0){return{time:0,segmentIndex:0,partIndex:null}}return null}},{name:"MediaSequence",run:(syncController,playlist,duration,currentTimeline,currentTime,type)=>{if(!type)return null;const mediaSequenceMap=syncController.getMediaSequenceMap(type);if(!mediaSequenceMap||0===mediaSequenceMap.size)return null;if(void 0===playlist.mediaSequence||!Array.isArray(playlist.segments)||!playlist.segments.length)return null;let currentMediaSequence=playlist.mediaSequence,segmentIndex=0;for(const segment of playlist.segments){const range=mediaSequenceMap.get(currentMediaSequence);if(!range)break;if(currentTime>=range.start&&currentTime<range.end){if(Array.isArray(segment.parts)&&segment.parts.length){let currentPartStart=range.start,partIndex=0;for(const part of segment.parts){const start=currentPartStart,end=start+part.duration;if(currentTime>=start&&currentTime<end)return{time:range.start,segmentIndex:segmentIndex,partIndex:partIndex};partIndex++,currentPartStart=end}}return{time:range.start,segmentIndex:segmentIndex,partIndex:null}}segmentIndex++,currentMediaSequence++}return null}},{name:"ProgramDateTime",run:(syncController,playlist,duration,currentTimeline,currentTime)=>{if(!Object.keys(syncController.timelineToDatetimeMappings).length)return null;let syncPoint=null,lastDistance=null;const partsAndSegments=getPartsAndSegments(playlist);currentTime=currentTime||0;for(let i=0;i<partsAndSegments.length;i++){const partAndSegment=partsAndSegments[playlist.endList||0===currentTime?i:partsAndSegments.length-(i+1)],segment=partAndSegment.segment,datetimeMapping=syncController.timelineToDatetimeMappings[segment.timeline];if(!datetimeMapping||!segment.dateTimeObject)continue;let start=segment.dateTimeObject.getTime()/1e3+datetimeMapping;if(segment.parts&&"number"==typeof partAndSegment.partIndex)for(let z=0;z<partAndSegment.partIndex;z++)start+=segment.parts[z].duration;const distance=Math.abs(currentTime-start);if(null!==lastDistance&&(0===distance||lastDistance<distance))break;lastDistance=distance,syncPoint={time:start,segmentIndex:partAndSegment.segmentIndex,partIndex:partAndSegment.partIndex}}return syncPoint}},{name:"Segment",run:(syncController,playlist,duration,currentTimeline,currentTime)=>{let syncPoint=null,lastDistance=null;currentTime=currentTime||0;const partsAndSegments=getPartsAndSegments(playlist);for(let i=0;i<partsAndSegments.length;i++){const partAndSegment=partsAndSegments[playlist.endList||0===currentTime?i:partsAndSegments.length-(i+1)],segment=partAndSegment.segment,start=partAndSegment.part&&partAndSegment.part.start||segment&&segment.start;if(segment.timeline===currentTimeline&&void 0!==start){const distance=Math.abs(currentTime-start);if(null!==lastDistance&&lastDistance<distance)break;(!syncPoint||null===lastDistance||lastDistance>=distance)&&(lastDistance=distance,syncPoint={time:start,segmentIndex:partAndSegment.segmentIndex,partIndex:partAndSegment.partIndex})}}return syncPoint}},{name:"Discontinuity",run:(syncController,playlist,duration,currentTimeline,currentTime)=>{let syncPoint=null;if(currentTime=currentTime||0,playlist.discontinuityStarts&&playlist.discontinuityStarts.length){let lastDistance=null;for(let i=0;i<playlist.discontinuityStarts.length;i++){const segmentIndex=playlist.discontinuityStarts[i],discontinuity=playlist.discontinuitySequence+i+1,discontinuitySync=syncController.discontinuities[discontinuity];if(discontinuitySync){const distance=Math.abs(currentTime-discontinuitySync.time);if(null!==lastDistance&&lastDistance<distance)break;(!syncPoint||null===lastDistance||lastDistance>=distance)&&(lastDistance=distance,syncPoint={time:discontinuitySync.time,segmentIndex:segmentIndex,partIndex:null})}}}return syncPoint}},{name:"Playlist",run:(syncController,playlist,duration,currentTimeline,currentTime)=>{if(playlist.syncInfo){return{time:playlist.syncInfo.time,segmentIndex:playlist.syncInfo.mediaSequence-playlist.mediaSequence,partIndex:null}}return null}}];class SyncController extends videojs.EventTarget{constructor(){super(),this.timelines=[],this.discontinuities=[],this.timelineToDatetimeMappings={},this.mediaSequenceStorage_=new Map,this.logger_=logger("SyncController")}getMediaSequenceMap(type){return this.mediaSequenceStorage_.get(type)}updateMediaSequenceMap(playlist,currentTime,type){if(void 0===playlist.mediaSequence||!Array.isArray(playlist.segments)||!playlist.segments.length)return;const currentMap=this.getMediaSequenceMap(type),result=new Map;let currentBaseTime,currentMediaSequence=playlist.mediaSequence;currentMap?currentMap.has(playlist.mediaSequence)?currentBaseTime=currentMap.get(playlist.mediaSequence).start:(this.logger_("MediaSequence sync for ".concat(type," segment loader - received a gap between playlists.\nFallback base time to: ").concat(currentTime,".\nReceived media sequence: ").concat(currentMediaSequence,".\nCurrent map: "),currentMap),currentBaseTime=currentTime):currentBaseTime=0,this.logger_("MediaSequence sync for ".concat(type," segment loader.\nReceived media sequence: ").concat(currentMediaSequence,".\nbase time is ").concat(currentBaseTime,"\nCurrent map: "),currentMap),playlist.segments.forEach((segment=>{const start=currentBaseTime,end=start+segment.duration,range={start:start,end:end};result.set(currentMediaSequence,range),currentMediaSequence++,currentBaseTime=end})),this.mediaSequenceStorage_.set(type,result)}getSyncPoint(playlist,duration,currentTimeline,currentTime,type){if(duration!==1/0){return syncPointStrategies.find((_ref76=>{let{name:name}=_ref76;return"VOD"===name})).run(this,playlist,duration)}const syncPoints=this.runStrategies_(playlist,duration,currentTimeline,currentTime,type);if(!syncPoints.length)return null;for(const syncPointInfo of syncPoints){const{syncPoint:syncPoint,strategy:strategy}=syncPointInfo,{segmentIndex:segmentIndex,time:time}=syncPoint;if(segmentIndex<0)continue;const start=time,end=start+playlist.segments[segmentIndex].duration;if(this.logger_("Strategy: ".concat(strategy,". Current time: ").concat(currentTime,". selected segment: ").concat(segmentIndex,". Time: [").concat(start," -> ").concat(end,"]}")),currentTime>=start&&currentTime<end)return this.logger_("Found sync point with exact match: ",syncPoint),syncPoint}return this.selectSyncPoint_(syncPoints,{key:"time",value:currentTime})}getExpiredTime(playlist,duration){if(!playlist||!playlist.segments)return null;const syncPoints=this.runStrategies_(playlist,duration,playlist.discontinuitySequence,0,"main");if(!syncPoints.length)return null;const syncPoint=this.selectSyncPoint_(syncPoints,{key:"segmentIndex",value:0});return syncPoint.segmentIndex>0&&(syncPoint.time*=-1),Math.abs(syncPoint.time+sumDurations({defaultDuration:playlist.targetDuration,durationList:playlist.segments,startIndex:syncPoint.segmentIndex,endIndex:0}))}runStrategies_(playlist,duration,currentTimeline,currentTime,type){const syncPoints=[];for(let i=0;i<syncPointStrategies.length;i++){const strategy=syncPointStrategies[i],syncPoint=strategy.run(this,playlist,duration,currentTimeline,currentTime,type);syncPoint&&(syncPoint.strategy=strategy.name,syncPoints.push({strategy:strategy.name,syncPoint:syncPoint}))}return syncPoints}selectSyncPoint_(syncPoints,target){let bestSyncPoint=syncPoints[0].syncPoint,bestDistance=Math.abs(syncPoints[0].syncPoint[target.key]-target.value),bestStrategy=syncPoints[0].strategy;for(let i=1;i<syncPoints.length;i++){const newDistance=Math.abs(syncPoints[i].syncPoint[target.key]-target.value);newDistance<bestDistance&&(bestDistance=newDistance,bestSyncPoint=syncPoints[i].syncPoint,bestStrategy=syncPoints[i].strategy)}return this.logger_("syncPoint for [".concat(target.key,": ").concat(target.value,"] chosen with strategy")+" [".concat(bestStrategy,"]: [time:").concat(bestSyncPoint.time,",")+" segmentIndex:".concat(bestSyncPoint.segmentIndex)+("number"==typeof bestSyncPoint.partIndex?",partIndex:".concat(bestSyncPoint.partIndex):"")+"]"),bestSyncPoint}saveExpiredSegmentInfo(oldPlaylist,newPlaylist){const mediaSequenceDiff=newPlaylist.mediaSequence-oldPlaylist.mediaSequence;if(mediaSequenceDiff>86400)videojs.log.warn("Not saving expired segment info. Media sequence gap ".concat(mediaSequenceDiff," is too large."));else for(let i=mediaSequenceDiff-1;i>=0;i--){const lastRemovedSegment=oldPlaylist.segments[i];if(lastRemovedSegment&&void 0!==lastRemovedSegment.start){newPlaylist.syncInfo={mediaSequence:oldPlaylist.mediaSequence+i,time:lastRemovedSegment.start},this.logger_("playlist refresh sync: [time:".concat(newPlaylist.syncInfo.time,",")+" mediaSequence: ".concat(newPlaylist.syncInfo.mediaSequence,"]")),this.trigger("syncinfoupdate");break}}}setDateTimeMappingForStart(playlist){if(this.timelineToDatetimeMappings={},playlist.segments&&playlist.segments.length&&playlist.segments[0].dateTimeObject){const firstSegment=playlist.segments[0],playlistTimestamp=firstSegment.dateTimeObject.getTime()/1e3;this.timelineToDatetimeMappings[firstSegment.timeline]=-playlistTimestamp}}saveSegmentTimingInfo(_ref77){let{segmentInfo:segmentInfo,shouldSaveTimelineMapping:shouldSaveTimelineMapping}=_ref77;const didCalculateSegmentTimeMapping=this.calculateSegmentTimeMapping_(segmentInfo,segmentInfo.timingInfo,shouldSaveTimelineMapping),segment=segmentInfo.segment;didCalculateSegmentTimeMapping&&(this.saveDiscontinuitySyncInfo_(segmentInfo),segmentInfo.playlist.syncInfo||(segmentInfo.playlist.syncInfo={mediaSequence:segmentInfo.playlist.mediaSequence+segmentInfo.mediaIndex,time:segment.start}));const dateTime=segment.dateTimeObject;segment.discontinuity&&shouldSaveTimelineMapping&&dateTime&&(this.timelineToDatetimeMappings[segment.timeline]=-dateTime.getTime()/1e3)}timestampOffsetForTimeline(timeline){return void 0===this.timelines[timeline]?null:this.timelines[timeline].time}mappingForTimeline(timeline){return void 0===this.timelines[timeline]?null:this.timelines[timeline].mapping}calculateSegmentTimeMapping_(segmentInfo,timingInfo,shouldSaveTimelineMapping){const segment=segmentInfo.segment,part=segmentInfo.part;let start,end,mappingObj=this.timelines[segmentInfo.timeline];if("number"==typeof segmentInfo.timestampOffset)mappingObj={time:segmentInfo.startOfSegment,mapping:segmentInfo.startOfSegment-timingInfo.start},shouldSaveTimelineMapping&&(this.timelines[segmentInfo.timeline]=mappingObj,this.trigger("timestampoffset"),this.logger_("time mapping for timeline ".concat(segmentInfo.timeline,": ")+"[time: ".concat(mappingObj.time,"] [mapping: ").concat(mappingObj.mapping,"]"))),start=segmentInfo.startOfSegment,end=timingInfo.end+mappingObj.mapping;else{if(!mappingObj)return!1;start=timingInfo.start+mappingObj.mapping,end=timingInfo.end+mappingObj.mapping}return part&&(part.start=start,part.end=end),(!segment.start||start<segment.start)&&(segment.start=start),segment.end=end,!0}saveDiscontinuitySyncInfo_(segmentInfo){const playlist=segmentInfo.playlist,segment=segmentInfo.segment;if(segment.discontinuity)this.discontinuities[segment.timeline]={time:segment.start,accuracy:0};else if(playlist.discontinuityStarts&&playlist.discontinuityStarts.length)for(let i=0;i<playlist.discontinuityStarts.length;i++){const segmentIndex=playlist.discontinuityStarts[i],discontinuity=playlist.discontinuitySequence+i+1,mediaIndexDiff=segmentIndex-segmentInfo.mediaIndex,accuracy=Math.abs(mediaIndexDiff);if(!this.discontinuities[discontinuity]||this.discontinuities[discontinuity].accuracy>accuracy){let time;time=mediaIndexDiff<0?segment.start-sumDurations({defaultDuration:playlist.targetDuration,durationList:playlist.segments,startIndex:segmentInfo.mediaIndex,endIndex:segmentIndex}):segment.end+sumDurations({defaultDuration:playlist.targetDuration,durationList:playlist.segments,startIndex:segmentInfo.mediaIndex+1,endIndex:segmentIndex}),this.discontinuities[discontinuity]={time:time,accuracy:accuracy}}}}dispose(){this.trigger("dispose"),this.off()}}class TimelineChangeController extends videojs.EventTarget{constructor(){super(),this.pendingTimelineChanges_={},this.lastTimelineChanges_={}}clearPendingTimelineChange(type){this.pendingTimelineChanges_[type]=null,this.trigger("pendingtimelinechange")}pendingTimelineChange(_ref78){let{type:type,from:from,to:to}=_ref78;return"number"==typeof from&&"number"==typeof to&&(this.pendingTimelineChanges_[type]={type:type,from:from,to:to},this.trigger("pendingtimelinechange")),this.pendingTimelineChanges_[type]}lastTimelineChange(_ref79){let{type:type,from:from,to:to}=_ref79;return"number"==typeof from&&"number"==typeof to&&(this.lastTimelineChanges_[type]={type:type,from:from,to:to},delete this.pendingTimelineChanges_[type],this.trigger("timelinechange")),this.lastTimelineChanges_[type]}dispose(){this.trigger("dispose"),this.pendingTimelineChanges_={},this.lastTimelineChanges_={},this.off()}}const workerCode=transform(getWorkerString((function(){var Stream=function(){function Stream(){this.listeners={}}var _proto=Stream.prototype;return _proto.on=function(type,listener){this.listeners[type]||(this.listeners[type]=[]),this.listeners[type].push(listener)},_proto.off=function(type,listener){if(!this.listeners[type])return!1;var index=this.listeners[type].indexOf(listener);return this.listeners[type]=this.listeners[type].slice(0),this.listeners[type].splice(index,1),index>-1},_proto.trigger=function(type){var callbacks=this.listeners[type];if(callbacks)if(2===arguments.length)for(var length=callbacks.length,i=0;i<length;++i)callbacks[i].call(this,arguments[1]);else for(var args=Array.prototype.slice.call(arguments,1),_length=callbacks.length,_i=0;_i<_length;++_i)callbacks[_i].apply(this,args)},_proto.dispose=function(){this.listeners={}},_proto.pipe=function(destination){this.on("data",(function(data){destination.push(data)}))},Stream}();
 /*! @name pkcs7 @version 1.0.4 @license Apache-2.0 */let aesTables=null;class AES{constructor(key){let i,j,tmp;aesTables||(aesTables=function(){const tables=[[[],[],[],[],[]],[[],[],[],[],[]]],encTable=tables[0],decTable=tables[1],sbox=encTable[4],sboxInv=decTable[4];let i,x,xInv;const d=[],th=[];let x2,x4,x8,s,tEnc,tDec;for(i=0;i<256;i++)th[(d[i]=i<<1^283*(i>>7))^i]=i;for(x=xInv=0;!sbox[x];x^=x2||1,xInv=th[xInv]||1)for(s=xInv^xInv<<1^xInv<<2^xInv<<3^xInv<<4,s=s>>8^255&s^99,sbox[x]=s,sboxInv[s]=x,x8=d[x4=d[x2=d[x]]],tDec=16843009*x8^65537*x4^257*x2^16843008*x,tEnc=257*d[s]^16843008*s,i=0;i<4;i++)encTable[i][x]=tEnc=tEnc<<24^tEnc>>>8,decTable[i][s]=tDec=tDec<<24^tDec>>>8;for(i=0;i<5;i++)encTable[i]=encTable[i].slice(0),decTable[i]=decTable[i].slice(0);return tables}()),this._tables=[[aesTables[0][0].slice(),aesTables[0][1].slice(),aesTables[0][2].slice(),aesTables[0][3].slice(),aesTables[0][4].slice()],[aesTables[1][0].slice(),aesTables[1][1].slice(),aesTables[1][2].slice(),aesTables[1][3].slice(),aesTables[1][4].slice()]];const sbox=this._tables[0][4],decTable=this._tables[1],keyLen=key.length;let rcon=1;if(4!==keyLen&&6!==keyLen&&8!==keyLen)throw new Error("Invalid aes key size");const encKey=key.slice(0),decKey=[];for(this._key=[encKey,decKey],i=keyLen;i<4*keyLen+28;i++)tmp=encKey[i-1],(i%keyLen==0||8===keyLen&&i%keyLen==4)&&(tmp=sbox[tmp>>>24]<<24^sbox[tmp>>16&255]<<16^sbox[tmp>>8&255]<<8^sbox[255&tmp],i%keyLen==0&&(tmp=tmp<<8^tmp>>>24^rcon<<24,rcon=rcon<<1^283*(rcon>>7))),encKey[i]=encKey[i-keyLen]^tmp;for(j=0;i;j++,i--)tmp=encKey[3&j?i:i-4],decKey[j]=i<=4||j<4?tmp:decTable[0][sbox[tmp>>>24]]^decTable[1][sbox[tmp>>16&255]]^decTable[2][sbox[tmp>>8&255]]^decTable[3][sbox[255&tmp]]}decrypt(encrypted0,encrypted1,encrypted2,encrypted3,out,offset){const key=this._key[1];let a2,b2,c2,a=encrypted0^key[0],b=encrypted3^key[1],c=encrypted2^key[2],d=encrypted1^key[3];const nInnerRounds=key.length/4-2;let i,kIndex=4;const table=this._tables[1],table0=table[0],table1=table[1],table2=table[2],table3=table[3],sbox=table[4];for(i=0;i<nInnerRounds;i++)a2=table0[a>>>24]^table1[b>>16&255]^table2[c>>8&255]^table3[255&d]^key[kIndex],b2=table0[b>>>24]^table1[c>>16&255]^table2[d>>8&255]^table3[255&a]^key[kIndex+1],c2=table0[c>>>24]^table1[d>>16&255]^table2[a>>8&255]^table3[255&b]^key[kIndex+2],d=table0[d>>>24]^table1[a>>16&255]^table2[b>>8&255]^table3[255&c]^key[kIndex+3],kIndex+=4,a=a2,b=b2,c=c2;for(i=0;i<4;i++)out[(3&-i)+offset]=sbox[a>>>24]<<24^sbox[b>>16&255]<<16^sbox[c>>8&255]<<8^sbox[255&d]^key[kIndex++],a2=a,a=b,b=c,c=d,d=a2}}class AsyncStream extends Stream{constructor(){super(Stream),this.jobs=[],this.delay=1,this.timeout_=null}processJob_(){this.jobs.shift()(),this.jobs.length?this.timeout_=setTimeout(this.processJob_.bind(this),this.delay):this.timeout_=null}push(job){this.jobs.push(job),this.timeout_||(this.timeout_=setTimeout(this.processJob_.bind(this),this.delay))}}const ntoh=function(word){return word<<24|(65280&word)<<8|(16711680&word)>>8|word>>>24};class Decrypter{constructor(encrypted,key,initVector,done){const step=Decrypter.STEP,encrypted32=new Int32Array(encrypted.buffer),decrypted=new Uint8Array(encrypted.byteLength);let i=0;for(this.asyncStream_=new AsyncStream,this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i,i+step),key,initVector,decrypted)),i=step;i<encrypted32.length;i+=step)initVector=new Uint32Array([ntoh(encrypted32[i-4]),ntoh(encrypted32[i-3]),ntoh(encrypted32[i-2]),ntoh(encrypted32[i-1])]),this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i,i+step),key,initVector,decrypted));this.asyncStream_.push((function(){var padded;
-/*! @name aes-decrypter @version 4.0.1 @license Apache-2.0 */done(null,(padded=decrypted).subarray(0,padded.byteLength-padded[padded.byteLength-1]))}))}static get STEP(){return 32e3}decryptChunk_(encrypted,key,initVector,decrypted){return function(){const bytes=function(encrypted,key,initVector){const encrypted32=new Int32Array(encrypted.buffer,encrypted.byteOffset,encrypted.byteLength>>2),decipher=new AES(Array.prototype.slice.call(key)),decrypted=new Uint8Array(encrypted.byteLength),decrypted32=new Int32Array(decrypted.buffer);let init0,init1,init2,init3,encrypted0,encrypted1,encrypted2,encrypted3,wordIx;for(init0=initVector[0],init1=initVector[1],init2=initVector[2],init3=initVector[3],wordIx=0;wordIx<encrypted32.length;wordIx+=4)encrypted0=ntoh(encrypted32[wordIx]),encrypted1=ntoh(encrypted32[wordIx+1]),encrypted2=ntoh(encrypted32[wordIx+2]),encrypted3=ntoh(encrypted32[wordIx+3]),decipher.decrypt(encrypted0,encrypted1,encrypted2,encrypted3,decrypted32,wordIx),decrypted32[wordIx]=ntoh(decrypted32[wordIx]^init0),decrypted32[wordIx+1]=ntoh(decrypted32[wordIx+1]^init1),decrypted32[wordIx+2]=ntoh(decrypted32[wordIx+2]^init2),decrypted32[wordIx+3]=ntoh(decrypted32[wordIx+3]^init3),init0=encrypted0,init1=encrypted1,init2=encrypted2,init3=encrypted3;return decrypted}(encrypted,key,initVector);decrypted.set(bytes,encrypted.byteOffset)}}}var win,commonjsGlobal="undefined"!=typeof globalThis?globalThis:"undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:{};win="undefined"!=typeof window?window:void 0!==commonjsGlobal?commonjsGlobal:"undefined"!=typeof self?self:{};var BigInt=win.BigInt||Number;BigInt("0x1"),BigInt("0x100"),BigInt("0x10000"),BigInt("0x1000000"),BigInt("0x100000000"),BigInt("0x10000000000"),BigInt("0x1000000000000"),BigInt("0x100000000000000"),BigInt("0x10000000000000000"),function(){var a=new Uint16Array([65484]),b=new Uint8Array(a.buffer,a.byteOffset,a.byteLength);255===b[0]||b[0]}();const createTransferableMessage=function(message){const transferable={};return Object.keys(message).forEach((key=>{const value=message[key];var obj;obj=value,("function"===ArrayBuffer.isView?ArrayBuffer.isView(obj):obj&&obj.buffer instanceof ArrayBuffer)?transferable[key]={bytes:value.buffer,byteOffset:value.byteOffset,byteLength:value.byteLength}:transferable[key]=value})),transferable};self.onmessage=function(event){const data=event.data,encrypted=new Uint8Array(data.encrypted.bytes,data.encrypted.byteOffset,data.encrypted.byteLength),key=new Uint32Array(data.key.bytes,data.key.byteOffset,data.key.byteLength/4),iv=new Uint32Array(data.iv.bytes,data.iv.byteOffset,data.iv.byteLength/4);new Decrypter(encrypted,key,iv,(function(err,bytes){self.postMessage(createTransferableMessage({source:data.source,decrypted:bytes}),[bytes.buffer])}))}})));var Decrypter=factory(workerCode);const audioTrackKind_=properties=>{let kind=properties.default?"main":"alternative";return properties.characteristics&&properties.characteristics.indexOf("public.accessibility.describes-video")>=0&&(kind="main-desc"),kind},stopLoaders=(segmentLoader,mediaType)=>{segmentLoader.abort(),segmentLoader.pause(),mediaType&&mediaType.activePlaylistLoader&&(mediaType.activePlaylistLoader.pause(),mediaType.activePlaylistLoader=null)},startLoaders=(playlistLoader,mediaType)=>{mediaType.activePlaylistLoader=playlistLoader,playlistLoader.load()},onError={AUDIO:(type,settings)=>()=>{const{segmentLoaders:{[type]:segmentLoader},mediaTypes:{[type]:mediaType},excludePlaylist:excludePlaylist}=settings;stopLoaders(segmentLoader,mediaType);const activeTrack=mediaType.activeTrack(),activeGroup=mediaType.activeGroup(),id=(activeGroup.filter((group=>group.default))[0]||activeGroup[0]).id,defaultTrack=mediaType.tracks[id];if(activeTrack!==defaultTrack){videojs.log.warn("Problem encountered loading the alternate audio track.Switching back to default.");for(const trackId in mediaType.tracks)mediaType.tracks[trackId].enabled=mediaType.tracks[trackId]===defaultTrack;mediaType.onTrackChanged()}else excludePlaylist({error:{message:"Problem encountered loading the default audio track."}})},SUBTITLES:(type,settings)=>()=>{const{segmentLoaders:{[type]:segmentLoader},mediaTypes:{[type]:mediaType}}=settings;videojs.log.warn("Problem encountered loading the subtitle track.Disabling subtitle track."),stopLoaders(segmentLoader,mediaType);const track=mediaType.activeTrack();track&&(track.mode="disabled"),mediaType.onTrackChanged()}},setupListeners={AUDIO:(type,playlistLoader,settings)=>{if(!playlistLoader)return;const{tech:tech,requestOptions:requestOptions,segmentLoaders:{[type]:segmentLoader}}=settings;playlistLoader.on("loadedmetadata",(()=>{const media=playlistLoader.media();segmentLoader.playlist(media,requestOptions),(!tech.paused()||media.endList&&"none"!==tech.preload())&&segmentLoader.load()})),playlistLoader.on("loadedplaylist",(()=>{segmentLoader.playlist(playlistLoader.media(),requestOptions),tech.paused()||segmentLoader.load()})),playlistLoader.on("error",onError[type](type,settings))},SUBTITLES:(type,playlistLoader,settings)=>{const{tech:tech,requestOptions:requestOptions,segmentLoaders:{[type]:segmentLoader},mediaTypes:{[type]:mediaType}}=settings;playlistLoader.on("loadedmetadata",(()=>{const media=playlistLoader.media();segmentLoader.playlist(media,requestOptions),segmentLoader.track(mediaType.activeTrack()),(!tech.paused()||media.endList&&"none"!==tech.preload())&&segmentLoader.load()})),playlistLoader.on("loadedplaylist",(()=>{segmentLoader.playlist(playlistLoader.media(),requestOptions),tech.paused()||segmentLoader.load()})),playlistLoader.on("error",onError[type](type,settings))}},initialize={AUDIO:(type,settings)=>{const{vhs:vhs,sourceType:sourceType,segmentLoaders:{[type]:segmentLoader},requestOptions:requestOptions,main:{mediaGroups:mediaGroups},mediaTypes:{[type]:{groups:groups,tracks:tracks,logger_:logger_}},mainPlaylistLoader:mainPlaylistLoader}=settings,audioOnlyMain=isAudioOnly(mainPlaylistLoader.main);mediaGroups[type]&&0!==Object.keys(mediaGroups[type]).length||(mediaGroups[type]={main:{default:{default:!0}}},audioOnlyMain&&(mediaGroups[type].main.default.playlists=mainPlaylistLoader.main.playlists));for(const groupId in mediaGroups[type]){groups[groupId]||(groups[groupId]=[]);for(const variantLabel in mediaGroups[type][groupId]){let playlistLoader,properties=mediaGroups[type][groupId][variantLabel];if(audioOnlyMain?(logger_("AUDIO group '".concat(groupId,"' label '").concat(variantLabel,"' is a main playlist")),properties.isMainPlaylist=!0,playlistLoader=null):playlistLoader="vhs-json"===sourceType&&properties.playlists?new PlaylistLoader(properties.playlists[0],vhs,requestOptions):properties.resolvedUri?new PlaylistLoader(properties.resolvedUri,vhs,requestOptions):properties.playlists&&"dash"===sourceType?new DashPlaylistLoader(properties.playlists[0],vhs,requestOptions,mainPlaylistLoader):null,properties=merge({id:variantLabel,playlistLoader:playlistLoader},properties),setupListeners[type](type,properties.playlistLoader,settings),groups[groupId].push(properties),void 0===tracks[variantLabel]){const track=new videojs.AudioTrack({id:variantLabel,kind:audioTrackKind_(properties),enabled:!1,language:properties.language,default:properties.default,label:variantLabel});tracks[variantLabel]=track}}}segmentLoader.on("error",onError[type](type,settings))},SUBTITLES:(type,settings)=>{const{tech:tech,vhs:vhs,sourceType:sourceType,segmentLoaders:{[type]:segmentLoader},requestOptions:requestOptions,main:{mediaGroups:mediaGroups},mediaTypes:{[type]:{groups:groups,tracks:tracks}},mainPlaylistLoader:mainPlaylistLoader}=settings;for(const groupId in mediaGroups[type]){groups[groupId]||(groups[groupId]=[]);for(const variantLabel in mediaGroups[type][groupId]){if(mediaGroups[type][groupId][variantLabel].forced)continue;let playlistLoader,properties=mediaGroups[type][groupId][variantLabel];if("hls"===sourceType)playlistLoader=new PlaylistLoader(properties.resolvedUri,vhs,requestOptions);else if("dash"===sourceType){if(!properties.playlists.filter((p=>p.excludeUntil!==1/0)).length)return;playlistLoader=new DashPlaylistLoader(properties.playlists[0],vhs,requestOptions,mainPlaylistLoader)}else"vhs-json"===sourceType&&(playlistLoader=new PlaylistLoader(properties.playlists?properties.playlists[0]:properties.resolvedUri,vhs,requestOptions));if(properties=merge({id:variantLabel,playlistLoader:playlistLoader},properties),setupListeners[type](type,properties.playlistLoader,settings),groups[groupId].push(properties),void 0===tracks[variantLabel]){const track=tech.addRemoteTextTrack({id:variantLabel,kind:"subtitles",default:properties.default&&properties.autoselect,language:properties.language,label:variantLabel},!1).track;tracks[variantLabel]=track}}}segmentLoader.on("error",onError[type](type,settings))},"CLOSED-CAPTIONS":(type,settings)=>{const{tech:tech,main:{mediaGroups:mediaGroups},mediaTypes:{[type]:{groups:groups,tracks:tracks}}}=settings;for(const groupId in mediaGroups[type]){groups[groupId]||(groups[groupId]=[]);for(const variantLabel in mediaGroups[type][groupId]){const properties=mediaGroups[type][groupId][variantLabel];if(!/^(?:CC|SERVICE)/.test(properties.instreamId))continue;const captionServices=tech.options_.vhs&&tech.options_.vhs.captionServices||{};let newProps={label:variantLabel,language:properties.language,instreamId:properties.instreamId,default:properties.default&&properties.autoselect};if(captionServices[newProps.instreamId]&&(newProps=merge(newProps,captionServices[newProps.instreamId])),void 0===newProps.default&&delete newProps.default,groups[groupId].push(merge({id:variantLabel},properties)),void 0===tracks[variantLabel]){const track=tech.addRemoteTextTrack({id:newProps.instreamId,kind:"captions",default:newProps.default,language:newProps.language,label:newProps.label},!1).track;tracks[variantLabel]=track}}}}},groupMatch=(list,media)=>{for(let i=0;i<list.length;i++){if(playlistMatch(media,list[i]))return!0;if(list[i].playlists&&groupMatch(list[i].playlists,media))return!0}return!1},activeTrack={AUDIO:(type,settings)=>()=>{const{mediaTypes:{[type]:{tracks:tracks}}}=settings;for(const id in tracks)if(tracks[id].enabled)return tracks[id];return null},SUBTITLES:(type,settings)=>()=>{const{mediaTypes:{[type]:{tracks:tracks}}}=settings;for(const id in tracks)if("showing"===tracks[id].mode||"hidden"===tracks[id].mode)return tracks[id];return null}},setupMediaGroups=settings=>{["AUDIO","SUBTITLES","CLOSED-CAPTIONS"].forEach((type=>{initialize[type](type,settings)}));const{mediaTypes:mediaTypes,mainPlaylistLoader:mainPlaylistLoader,tech:tech,vhs:vhs,segmentLoaders:{AUDIO:audioSegmentLoader,main:mainSegmentLoader}}=settings;["AUDIO","SUBTITLES"].forEach((type=>{mediaTypes[type].activeGroup=((type,settings)=>track=>{const{mainPlaylistLoader:mainPlaylistLoader,mediaTypes:{[type]:{groups:groups}}}=settings,media=mainPlaylistLoader.media();if(!media)return null;let variants=null;media.attributes[type]&&(variants=groups[media.attributes[type]]);const groupKeys=Object.keys(groups);if(!variants)if("AUDIO"===type&&groupKeys.length>1&&isAudioOnly(settings.main))for(let i=0;i<groupKeys.length;i++){const groupPropertyList=groups[groupKeys[i]];if(groupMatch(groupPropertyList,media)){variants=groupPropertyList;break}}else groups.main?variants=groups.main:1===groupKeys.length&&(variants=groups[groupKeys[0]]);return void 0===track?variants:null!==track&&variants&&variants.filter((props=>props.id===track.id))[0]||null})(type,settings),mediaTypes[type].activeTrack=activeTrack[type](type,settings),mediaTypes[type].onGroupChanged=((type,settings)=>()=>{const{segmentLoaders:{[type]:segmentLoader,main:mainSegmentLoader},mediaTypes:{[type]:mediaType}}=settings,activeTrack=mediaType.activeTrack(),activeGroup=mediaType.getActiveGroup(),previousActiveLoader=mediaType.activePlaylistLoader,lastGroup=mediaType.lastGroup_;activeGroup&&lastGroup&&activeGroup.id===lastGroup.id||(mediaType.lastGroup_=activeGroup,mediaType.lastTrack_=activeTrack,stopLoaders(segmentLoader,mediaType),activeGroup&&!activeGroup.isMainPlaylist&&(activeGroup.playlistLoader?(segmentLoader.resyncLoader(),startLoaders(activeGroup.playlistLoader,mediaType)):previousActiveLoader&&mainSegmentLoader.resetEverything()))})(type,settings),mediaTypes[type].onGroupChanging=((type,settings)=>()=>{const{segmentLoaders:{[type]:segmentLoader},mediaTypes:{[type]:mediaType}}=settings;mediaType.lastGroup_=null,segmentLoader.abort(),segmentLoader.pause()})(type,settings),mediaTypes[type].onTrackChanged=((type,settings)=>()=>{const{mainPlaylistLoader:mainPlaylistLoader,segmentLoaders:{[type]:segmentLoader,main:mainSegmentLoader},mediaTypes:{[type]:mediaType}}=settings,activeTrack=mediaType.activeTrack(),activeGroup=mediaType.getActiveGroup(),previousActiveLoader=mediaType.activePlaylistLoader,lastTrack=mediaType.lastTrack_;if((!lastTrack||!activeTrack||lastTrack.id!==activeTrack.id)&&(mediaType.lastGroup_=activeGroup,mediaType.lastTrack_=activeTrack,stopLoaders(segmentLoader,mediaType),activeGroup)){if(activeGroup.isMainPlaylist){if(!activeTrack||!lastTrack||activeTrack.id===lastTrack.id)return;const pc=settings.vhs.playlistController_,newPlaylist=pc.selectPlaylist();if(pc.media()===newPlaylist)return;return mediaType.logger_("track change. Switching main audio from ".concat(lastTrack.id," to ").concat(activeTrack.id)),mainPlaylistLoader.pause(),mainSegmentLoader.resetEverything(),void pc.fastQualityChange_(newPlaylist)}if("AUDIO"===type){if(!activeGroup.playlistLoader)return mainSegmentLoader.setAudio(!0),void mainSegmentLoader.resetEverything();segmentLoader.setAudio(!0),mainSegmentLoader.setAudio(!1)}previousActiveLoader!==activeGroup.playlistLoader?(segmentLoader.track&&segmentLoader.track(activeTrack),segmentLoader.resetEverything(),startLoaders(activeGroup.playlistLoader,mediaType)):startLoaders(activeGroup.playlistLoader,mediaType)}})(type,settings),mediaTypes[type].getActiveGroup=((type,_ref76)=>{let{mediaTypes:mediaTypes}=_ref76;return()=>{const activeTrack_=mediaTypes[type].activeTrack();return activeTrack_?mediaTypes[type].activeGroup(activeTrack_):null}})(type,settings)}));const audioGroup=mediaTypes.AUDIO.activeGroup();if(audioGroup){const groupId=(audioGroup.filter((group=>group.default))[0]||audioGroup[0]).id;mediaTypes.AUDIO.tracks[groupId].enabled=!0,mediaTypes.AUDIO.onGroupChanged(),mediaTypes.AUDIO.onTrackChanged();mediaTypes.AUDIO.getActiveGroup().playlistLoader?(mainSegmentLoader.setAudio(!1),audioSegmentLoader.setAudio(!0)):mainSegmentLoader.setAudio(!0)}mainPlaylistLoader.on("mediachange",(()=>{["AUDIO","SUBTITLES"].forEach((type=>mediaTypes[type].onGroupChanged()))})),mainPlaylistLoader.on("mediachanging",(()=>{["AUDIO","SUBTITLES"].forEach((type=>mediaTypes[type].onGroupChanging()))}));const onAudioTrackChanged=()=>{mediaTypes.AUDIO.onTrackChanged(),tech.trigger({type:"usage",name:"vhs-audio-change"})};tech.audioTracks().addEventListener("change",onAudioTrackChanged),tech.remoteTextTracks().addEventListener("change",mediaTypes.SUBTITLES.onTrackChanged),vhs.on("dispose",(()=>{tech.audioTracks().removeEventListener("change",onAudioTrackChanged),tech.remoteTextTracks().removeEventListener("change",mediaTypes.SUBTITLES.onTrackChanged)})),tech.clearTracks("audio");for(const id in mediaTypes.AUDIO.tracks)tech.audioTracks().addTrack(mediaTypes.AUDIO.tracks[id])};let Vhs$1;const loaderStats=["mediaRequests","mediaRequestsAborted","mediaRequestsTimedout","mediaRequestsErrored","mediaTransferDuration","mediaBytesTransferred","mediaAppends"],sumLoaderStat=function(stat){return this.audioSegmentLoader_[stat]+this.mainSegmentLoader_[stat]};class PlaylistController extends videojs.EventTarget{constructor(options){super();const{src:src,withCredentials:withCredentials,tech:tech,bandwidth:bandwidth,externVhs:externVhs,useCueTags:useCueTags,playlistExclusionDuration:playlistExclusionDuration,enableLowInitialPlaylist:enableLowInitialPlaylist,sourceType:sourceType,cacheEncryptionKeys:cacheEncryptionKeys,bufferBasedABR:bufferBasedABR,leastPixelDiffSelector:leastPixelDiffSelector,captionServices:captionServices}=options;if(!src)throw new Error("A non-empty playlist URL or JSON manifest string is required");let{maxPlaylistRetries:maxPlaylistRetries}=options;null==maxPlaylistRetries&&(maxPlaylistRetries=1/0),Vhs$1=externVhs,this.bufferBasedABR=Boolean(bufferBasedABR),this.leastPixelDiffSelector=Boolean(leastPixelDiffSelector),this.withCredentials=withCredentials,this.tech_=tech,this.vhs_=tech.vhs,this.sourceType_=sourceType,this.useCueTags_=useCueTags,this.playlistExclusionDuration=playlistExclusionDuration,this.maxPlaylistRetries=maxPlaylistRetries,this.enableLowInitialPlaylist=enableLowInitialPlaylist,this.useCueTags_&&(this.cueTagsTrack_=this.tech_.addTextTrack("metadata","ad-cues"),this.cueTagsTrack_.inBandMetadataTrackDispatchType=""),this.requestOptions_={withCredentials:withCredentials,maxPlaylistRetries:maxPlaylistRetries,timeout:null},this.on("error",this.pauseLoading),this.mediaTypes_=(()=>{const mediaTypes={};return["AUDIO","SUBTITLES","CLOSED-CAPTIONS"].forEach((type=>{mediaTypes[type]={groups:{},tracks:{},activePlaylistLoader:null,activeGroup:noop,activeTrack:noop,getActiveGroup:noop,onGroupChanged:noop,onTrackChanged:noop,lastTrack_:null,logger_:logger("MediaGroups[".concat(type,"]"))}})),mediaTypes})(),this.mediaSource=new window.MediaSource,this.handleDurationChange_=this.handleDurationChange_.bind(this),this.handleSourceOpen_=this.handleSourceOpen_.bind(this),this.handleSourceEnded_=this.handleSourceEnded_.bind(this),this.mediaSource.addEventListener("durationchange",this.handleDurationChange_),this.mediaSource.addEventListener("sourceopen",this.handleSourceOpen_),this.mediaSource.addEventListener("sourceended",this.handleSourceEnded_),this.seekable_=createTimeRanges(),this.hasPlayed_=!1,this.syncController_=new SyncController(options),this.segmentMetadataTrack_=tech.addRemoteTextTrack({kind:"metadata",label:"segment-metadata"},!1).track,this.decrypter_=new Decrypter,this.sourceUpdater_=new SourceUpdater(this.mediaSource),this.inbandTextTracks_={},this.timelineChangeController_=new TimelineChangeController;const segmentLoaderSettings={vhs:this.vhs_,parse708captions:options.parse708captions,useDtsForTimestampOffset:options.useDtsForTimestampOffset,captionServices:captionServices,mediaSource:this.mediaSource,currentTime:this.tech_.currentTime.bind(this.tech_),seekable:()=>this.seekable(),seeking:()=>this.tech_.seeking(),duration:()=>this.duration(),hasPlayed:()=>this.hasPlayed_,goalBufferLength:()=>this.goalBufferLength(),bandwidth:bandwidth,syncController:this.syncController_,decrypter:this.decrypter_,sourceType:this.sourceType_,inbandTextTracks:this.inbandTextTracks_,cacheEncryptionKeys:cacheEncryptionKeys,sourceUpdater:this.sourceUpdater_,timelineChangeController:this.timelineChangeController_,exactManifestTimings:options.exactManifestTimings};this.mainPlaylistLoader_="dash"===this.sourceType_?new DashPlaylistLoader(src,this.vhs_,this.requestOptions_):new PlaylistLoader(src,this.vhs_,this.requestOptions_),this.setupMainPlaylistLoaderListeners_(),this.mainSegmentLoader_=new SegmentLoader(merge(segmentLoaderSettings,{segmentMetadataTrack:this.segmentMetadataTrack_,loaderType:"main"}),options),this.audioSegmentLoader_=new SegmentLoader(merge(segmentLoaderSettings,{loaderType:"audio"}),options),this.subtitleSegmentLoader_=new VTTSegmentLoader(merge(segmentLoaderSettings,{loaderType:"vtt",featuresNativeTextTracks:this.tech_.featuresNativeTextTracks,loadVttJs:()=>new Promise(((resolve,reject)=>{function onLoad(){tech.off("vttjserror",onError),resolve()}function onError(){tech.off("vttjsloaded",onLoad),reject()}tech.one("vttjsloaded",onLoad),tech.one("vttjserror",onError),tech.addWebVttScript_()}))}),options),this.setupSegmentLoaderListeners_(),this.bufferBasedABR&&(this.mainPlaylistLoader_.one("loadedplaylist",(()=>this.startABRTimer_())),this.tech_.on("pause",(()=>this.stopABRTimer_())),this.tech_.on("play",(()=>this.startABRTimer_()))),loaderStats.forEach((stat=>{this[stat+"_"]=sumLoaderStat.bind(this,stat)})),this.logger_=logger("pc"),this.triggeredFmp4Usage=!1,"none"===this.tech_.preload()?(this.loadOnPlay_=()=>{this.loadOnPlay_=null,this.mainPlaylistLoader_.load()},this.tech_.one("play",this.loadOnPlay_)):this.mainPlaylistLoader_.load(),this.timeToLoadedData__=-1,this.mainAppendsToLoadedData__=-1,this.audioAppendsToLoadedData__=-1;const event="none"===this.tech_.preload()?"play":"loadstart";this.tech_.one(event,(()=>{const timeToLoadedDataStart=Date.now();this.tech_.one("loadeddata",(()=>{this.timeToLoadedData__=Date.now()-timeToLoadedDataStart,this.mainAppendsToLoadedData__=this.mainSegmentLoader_.mediaAppends,this.audioAppendsToLoadedData__=this.audioSegmentLoader_.mediaAppends}))}))}mainAppendsToLoadedData_(){return this.mainAppendsToLoadedData__}audioAppendsToLoadedData_(){return this.audioAppendsToLoadedData__}appendsToLoadedData_(){const main=this.mainAppendsToLoadedData_(),audio=this.audioAppendsToLoadedData_();return-1===main||-1===audio?-1:main+audio}timeToLoadedData_(){return this.timeToLoadedData__}checkABR_(){let reason=arguments.length>0&&void 0!==arguments[0]?arguments[0]:"abr";const nextPlaylist=this.selectPlaylist();nextPlaylist&&this.shouldSwitchToMedia_(nextPlaylist)&&this.switchMedia_(nextPlaylist,reason)}switchMedia_(playlist,cause,delay){const oldMedia=this.media(),oldId=oldMedia&&(oldMedia.id||oldMedia.uri),newId=playlist.id||playlist.uri;oldId&&oldId!==newId&&(this.logger_("switch media ".concat(oldId," -> ").concat(newId," from ").concat(cause)),this.tech_.trigger({type:"usage",name:"vhs-rendition-change-".concat(cause)})),this.mainPlaylistLoader_.media(playlist,delay)}startABRTimer_(){this.stopABRTimer_(),this.abrTimer_=window.setInterval((()=>this.checkABR_()),250)}stopABRTimer_(){this.tech_.scrubbing&&this.tech_.scrubbing()||(window.clearInterval(this.abrTimer_),this.abrTimer_=null)}getAudioTrackPlaylists_(){const main=this.main(),defaultPlaylists=main&&main.playlists||[];if(!main||!main.mediaGroups||!main.mediaGroups.AUDIO)return defaultPlaylists;const AUDIO=main.mediaGroups.AUDIO,groupKeys=Object.keys(AUDIO);let track;if(Object.keys(this.mediaTypes_.AUDIO.groups).length)track=this.mediaTypes_.AUDIO.activeTrack();else{const defaultGroup=AUDIO.main||groupKeys.length&&AUDIO[groupKeys[0]];for(const label in defaultGroup)if(defaultGroup[label].default){track={label:label};break}}if(!track)return defaultPlaylists;const playlists=[];for(const group in AUDIO)if(AUDIO[group][track.label]){const properties=AUDIO[group][track.label];if(properties.playlists&&properties.playlists.length)playlists.push.apply(playlists,properties.playlists);else if(properties.uri)playlists.push(properties);else if(main.playlists.length)for(let i=0;i<main.playlists.length;i++){const playlist=main.playlists[i];playlist.attributes&&playlist.attributes.AUDIO&&playlist.attributes.AUDIO===group&&playlists.push(playlist)}}return playlists.length?playlists:defaultPlaylists}setupMainPlaylistLoaderListeners_(){this.mainPlaylistLoader_.on("loadedmetadata",(()=>{const media=this.mainPlaylistLoader_.media(),requestTimeout=1.5*media.targetDuration*1e3;isLowestEnabledRendition(this.mainPlaylistLoader_.main,this.mainPlaylistLoader_.media())?this.requestOptions_.timeout=0:this.requestOptions_.timeout=requestTimeout,media.endList&&"none"!==this.tech_.preload()&&(this.mainSegmentLoader_.playlist(media,this.requestOptions_),this.mainSegmentLoader_.load()),setupMediaGroups({sourceType:this.sourceType_,segmentLoaders:{AUDIO:this.audioSegmentLoader_,SUBTITLES:this.subtitleSegmentLoader_,main:this.mainSegmentLoader_},tech:this.tech_,requestOptions:this.requestOptions_,mainPlaylistLoader:this.mainPlaylistLoader_,vhs:this.vhs_,main:this.main(),mediaTypes:this.mediaTypes_,excludePlaylist:this.excludePlaylist.bind(this)}),this.triggerPresenceUsage_(this.main(),media),this.setupFirstPlay(),!this.mediaTypes_.AUDIO.activePlaylistLoader||this.mediaTypes_.AUDIO.activePlaylistLoader.media()?this.trigger("selectedinitialmedia"):this.mediaTypes_.AUDIO.activePlaylistLoader.one("loadedmetadata",(()=>{this.trigger("selectedinitialmedia")}))})),this.mainPlaylistLoader_.on("loadedplaylist",(()=>{this.loadOnPlay_&&this.tech_.off("play",this.loadOnPlay_);let updatedPlaylist=this.mainPlaylistLoader_.media();if(!updatedPlaylist){let selectedMedia;if(this.excludeUnsupportedVariants_(),this.enableLowInitialPlaylist&&(selectedMedia=this.selectInitialPlaylist()),selectedMedia||(selectedMedia=this.selectPlaylist()),!selectedMedia||!this.shouldSwitchToMedia_(selectedMedia))return;this.initialMedia_=selectedMedia,this.switchMedia_(this.initialMedia_,"initial");if(!("vhs-json"===this.sourceType_&&this.initialMedia_.segments))return;updatedPlaylist=this.initialMedia_}this.handleUpdatedMediaPlaylist(updatedPlaylist)})),this.mainPlaylistLoader_.on("error",(()=>{const error=this.mainPlaylistLoader_.error;this.excludePlaylist({playlistToExclude:error.playlist,error:error})})),this.mainPlaylistLoader_.on("mediachanging",(()=>{this.mainSegmentLoader_.abort(),this.mainSegmentLoader_.pause()})),this.mainPlaylistLoader_.on("mediachange",(()=>{const media=this.mainPlaylistLoader_.media(),requestTimeout=1.5*media.targetDuration*1e3;isLowestEnabledRendition(this.mainPlaylistLoader_.main,this.mainPlaylistLoader_.media())?this.requestOptions_.timeout=0:this.requestOptions_.timeout=requestTimeout,this.mainPlaylistLoader_.load(),this.mainSegmentLoader_.playlist(media,this.requestOptions_),this.mainSegmentLoader_.load(),this.tech_.trigger({type:"mediachange",bubbles:!0})})),this.mainPlaylistLoader_.on("playlistunchanged",(()=>{const updatedPlaylist=this.mainPlaylistLoader_.media();if("playlist-unchanged"===updatedPlaylist.lastExcludeReason_)return;this.stuckAtPlaylistEnd_(updatedPlaylist)&&(this.excludePlaylist({error:{message:"Playlist no longer updating.",reason:"playlist-unchanged"}}),this.tech_.trigger("playliststuck"))})),this.mainPlaylistLoader_.on("renditiondisabled",(()=>{this.tech_.trigger({type:"usage",name:"vhs-rendition-disabled"})})),this.mainPlaylistLoader_.on("renditionenabled",(()=>{this.tech_.trigger({type:"usage",name:"vhs-rendition-enabled"})}))}handleUpdatedMediaPlaylist(updatedPlaylist){this.useCueTags_&&this.updateAdCues_(updatedPlaylist),this.mainSegmentLoader_.playlist(updatedPlaylist,this.requestOptions_),this.updateDuration(!updatedPlaylist.endList),this.tech_.paused()||(this.mainSegmentLoader_.load(),this.audioSegmentLoader_&&this.audioSegmentLoader_.load())}triggerPresenceUsage_(main,media){const mediaGroups=main.mediaGroups||{};let defaultDemuxed=!0;const audioGroupKeys=Object.keys(mediaGroups.AUDIO);for(const mediaGroup in mediaGroups.AUDIO)for(const label in mediaGroups.AUDIO[mediaGroup]){mediaGroups.AUDIO[mediaGroup][label].uri||(defaultDemuxed=!1)}defaultDemuxed&&this.tech_.trigger({type:"usage",name:"vhs-demuxed"}),Object.keys(mediaGroups.SUBTITLES).length&&this.tech_.trigger({type:"usage",name:"vhs-webvtt"}),Vhs$1.Playlist.isAes(media)&&this.tech_.trigger({type:"usage",name:"vhs-aes"}),audioGroupKeys.length&&Object.keys(mediaGroups.AUDIO[audioGroupKeys[0]]).length>1&&this.tech_.trigger({type:"usage",name:"vhs-alternate-audio"}),this.useCueTags_&&this.tech_.trigger({type:"usage",name:"vhs-playlist-cue-tags"})}shouldSwitchToMedia_(nextPlaylist){const currentPlaylist=this.mainPlaylistLoader_.media()||this.mainPlaylistLoader_.pendingMedia_,currentTime=this.tech_.currentTime(),bufferLowWaterLine=this.bufferLowWaterLine(),bufferHighWaterLine=this.bufferHighWaterLine();return function(_ref77){let{currentPlaylist:currentPlaylist,buffered:buffered,currentTime:currentTime,nextPlaylist:nextPlaylist,bufferLowWaterLine:bufferLowWaterLine,bufferHighWaterLine:bufferHighWaterLine,duration:duration,bufferBasedABR:bufferBasedABR,log:log}=_ref77;if(!nextPlaylist)return videojs.log.warn("We received no playlist to switch to. Please check your stream."),!1;const sharedLogLine="allowing switch ".concat(currentPlaylist&&currentPlaylist.id||"null"," -> ").concat(nextPlaylist.id);if(!currentPlaylist)return log("".concat(sharedLogLine," as current playlist is not set")),!0;if(nextPlaylist.id===currentPlaylist.id)return!1;const isBuffered=Boolean(findRange(buffered,currentTime).length);if(!currentPlaylist.endList)return isBuffered||"number"!=typeof currentPlaylist.partTargetDuration?(log("".concat(sharedLogLine," as current playlist is live")),!0):(log("not ".concat(sharedLogLine," as current playlist is live llhls, but currentTime isn't in buffered.")),!1);const forwardBuffer=timeAheadOf(buffered,currentTime),maxBufferLowWaterLine=bufferBasedABR?Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE:Config.MAX_BUFFER_LOW_WATER_LINE;if(duration<maxBufferLowWaterLine)return log("".concat(sharedLogLine," as duration < max low water line (").concat(duration," < ").concat(maxBufferLowWaterLine,")")),!0;const nextBandwidth=nextPlaylist.attributes.BANDWIDTH,currBandwidth=currentPlaylist.attributes.BANDWIDTH;if(nextBandwidth<currBandwidth&&(!bufferBasedABR||forwardBuffer<bufferHighWaterLine)){let logLine="".concat(sharedLogLine," as next bandwidth < current bandwidth (").concat(nextBandwidth," < ").concat(currBandwidth,")");return bufferBasedABR&&(logLine+=" and forwardBuffer < bufferHighWaterLine (".concat(forwardBuffer," < ").concat(bufferHighWaterLine,")")),log(logLine),!0}if((!bufferBasedABR||nextBandwidth>currBandwidth)&&forwardBuffer>=bufferLowWaterLine){let logLine="".concat(sharedLogLine," as forwardBuffer >= bufferLowWaterLine (").concat(forwardBuffer," >= ").concat(bufferLowWaterLine,")");return bufferBasedABR&&(logLine+=" and next bandwidth > current bandwidth (".concat(nextBandwidth," > ").concat(currBandwidth,")")),log(logLine),!0}return log("not ".concat(sharedLogLine," as no switching criteria met")),!1}({buffered:this.tech_.buffered(),currentTime:currentTime,currentPlaylist:currentPlaylist,nextPlaylist:nextPlaylist,bufferLowWaterLine:bufferLowWaterLine,bufferHighWaterLine:bufferHighWaterLine,duration:this.duration(),bufferBasedABR:this.bufferBasedABR,log:this.logger_})}setupSegmentLoaderListeners_(){this.mainSegmentLoader_.on("bandwidthupdate",(()=>{this.checkABR_("bandwidthupdate"),this.tech_.trigger("bandwidthupdate")})),this.mainSegmentLoader_.on("timeout",(()=>{this.bufferBasedABR&&this.mainSegmentLoader_.load()})),this.bufferBasedABR||this.mainSegmentLoader_.on("progress",(()=>{this.trigger("progress")})),this.mainSegmentLoader_.on("error",(()=>{const error=this.mainSegmentLoader_.error();this.excludePlaylist({playlistToExclude:error.playlist,error:error})})),this.mainSegmentLoader_.on("appenderror",(()=>{this.error=this.mainSegmentLoader_.error_,this.trigger("error")})),this.mainSegmentLoader_.on("syncinfoupdate",(()=>{this.onSyncInfoUpdate_()})),this.mainSegmentLoader_.on("timestampoffset",(()=>{this.tech_.trigger({type:"usage",name:"vhs-timestamp-offset"})})),this.audioSegmentLoader_.on("syncinfoupdate",(()=>{this.onSyncInfoUpdate_()})),this.audioSegmentLoader_.on("appenderror",(()=>{this.error=this.audioSegmentLoader_.error_,this.trigger("error")})),this.mainSegmentLoader_.on("ended",(()=>{this.logger_("main segment loader ended"),this.onEndOfStream()})),this.mainSegmentLoader_.on("earlyabort",(event=>{this.bufferBasedABR||(this.delegateLoaders_("all",["abort"]),this.excludePlaylist({error:{message:"Aborted early because there isn't enough bandwidth to complete the request without rebuffering."},playlistExclusionDuration:120}))}));const updateCodecs=()=>{if(!this.sourceUpdater_.hasCreatedSourceBuffers())return this.tryToCreateSourceBuffers_();const codecs=this.getCodecsOrExclude_();codecs&&this.sourceUpdater_.addOrChangeSourceBuffers(codecs)};this.mainSegmentLoader_.on("trackinfo",updateCodecs),this.audioSegmentLoader_.on("trackinfo",updateCodecs),this.mainSegmentLoader_.on("fmp4",(()=>{this.triggeredFmp4Usage||(this.tech_.trigger({type:"usage",name:"vhs-fmp4"}),this.triggeredFmp4Usage=!0)})),this.audioSegmentLoader_.on("fmp4",(()=>{this.triggeredFmp4Usage||(this.tech_.trigger({type:"usage",name:"vhs-fmp4"}),this.triggeredFmp4Usage=!0)})),this.audioSegmentLoader_.on("ended",(()=>{this.logger_("audioSegmentLoader ended"),this.onEndOfStream()}))}mediaSecondsLoaded_(){return Math.max(this.audioSegmentLoader_.mediaSecondsLoaded+this.mainSegmentLoader_.mediaSecondsLoaded)}load(){this.mainSegmentLoader_.load(),this.mediaTypes_.AUDIO.activePlaylistLoader&&this.audioSegmentLoader_.load(),this.mediaTypes_.SUBTITLES.activePlaylistLoader&&this.subtitleSegmentLoader_.load()}fastQualityChange_(){let media=arguments.length>0&&void 0!==arguments[0]?arguments[0]:this.selectPlaylist();media!==this.mainPlaylistLoader_.media()?(this.switchMedia_(media,"fast-quality"),this.mainSegmentLoader_.resetEverything((()=>{videojs.browser.IE_VERSION||videojs.browser.IS_EDGE?this.tech_.setCurrentTime(this.tech_.currentTime()+.04):this.tech_.setCurrentTime(this.tech_.currentTime())}))):this.logger_("skipping fastQualityChange because new media is same as old")}play(){if(this.setupFirstPlay())return;this.tech_.ended()&&this.tech_.setCurrentTime(0),this.hasPlayed_&&this.load();const seekable=this.tech_.seekable();return this.tech_.duration()===1/0&&this.tech_.currentTime()<seekable.start(0)?this.tech_.setCurrentTime(seekable.end(seekable.length-1)):void 0}setupFirstPlay(){const media=this.mainPlaylistLoader_.media();if(!media||this.tech_.paused()||this.hasPlayed_)return!1;if(!media.endList){const seekable=this.seekable();if(!seekable.length)return!1;if(videojs.browser.IE_VERSION&&0===this.tech_.readyState())return this.tech_.one("loadedmetadata",(()=>{this.trigger("firstplay"),this.tech_.setCurrentTime(seekable.end(0)),this.hasPlayed_=!0})),!1;this.trigger("firstplay"),this.tech_.setCurrentTime(seekable.end(0))}return this.hasPlayed_=!0,this.load(),!0}handleSourceOpen_(){if(this.tryToCreateSourceBuffers_(),this.tech_.autoplay()){const playPromise=this.tech_.play();void 0!==playPromise&&"function"==typeof playPromise.then&&playPromise.then(null,(e=>{}))}this.trigger("sourceopen")}handleSourceEnded_(){if(!this.inbandTextTracks_.metadataTrack_)return;const cues=this.inbandTextTracks_.metadataTrack_.cues;if(!cues||!cues.length)return;const duration=this.duration();cues[cues.length-1].endTime=isNaN(duration)||Math.abs(duration)===1/0?Number.MAX_VALUE:duration}handleDurationChange_(){this.tech_.trigger("durationchange")}onEndOfStream(){let isEndOfStream=this.mainSegmentLoader_.ended_;if(this.mediaTypes_.AUDIO.activePlaylistLoader){const mainMediaInfo=this.mainSegmentLoader_.getCurrentMediaInfo_();isEndOfStream=!mainMediaInfo||mainMediaInfo.hasVideo?isEndOfStream&&this.audioSegmentLoader_.ended_:this.audioSegmentLoader_.ended_}isEndOfStream&&(this.stopABRTimer_(),this.sourceUpdater_.endOfStream())}stuckAtPlaylistEnd_(playlist){if(!this.seekable().length)return!1;const expired=this.syncController_.getExpiredTime(playlist,this.duration());if(null===expired)return!1;const absolutePlaylistEnd=Vhs$1.Playlist.playlistEnd(playlist,expired),currentTime=this.tech_.currentTime(),buffered=this.tech_.buffered();if(!buffered.length)return absolutePlaylistEnd-currentTime<=.1;const bufferedEnd=buffered.end(buffered.length-1);return bufferedEnd-currentTime<=.1&&absolutePlaylistEnd-bufferedEnd<=.1}excludePlaylist(_ref78){let{playlistToExclude:playlistToExclude=this.mainPlaylistLoader_.media(),error:error={},playlistExclusionDuration:playlistExclusionDuration}=_ref78;if(playlistToExclude=playlistToExclude||this.mainPlaylistLoader_.media(),playlistExclusionDuration=playlistExclusionDuration||error.playlistExclusionDuration||this.playlistExclusionDuration,!playlistToExclude)return this.error=error,void("open"!==this.mediaSource.readyState?this.trigger("error"):this.sourceUpdater_.endOfStream("network"));playlistToExclude.playlistErrors_++;const playlists=this.mainPlaylistLoader_.main.playlists,enabledPlaylists=playlists.filter(isEnabled),isFinalRendition=1===enabledPlaylists.length&&enabledPlaylists[0]===playlistToExclude;if(1===playlists.length&&playlistExclusionDuration!==1/0)return videojs.log.warn("Problem encountered with playlist ".concat(playlistToExclude.id,". ")+"Trying again since it is the only playlist."),this.tech_.trigger("retryplaylist"),this.mainPlaylistLoader_.load(isFinalRendition);if(isFinalRendition){let reincluded=!1;playlists.forEach((playlist=>{if(playlist===playlistToExclude)return;const excludeUntil=playlist.excludeUntil;void 0!==excludeUntil&&excludeUntil!==1/0&&(reincluded=!0,delete playlist.excludeUntil)})),reincluded&&(videojs.log.warn("Removing other playlists from the exclusion list because the last rendition is about to be excluded."),this.tech_.trigger("retryplaylist"))}let excludeUntil;excludeUntil=playlistToExclude.playlistErrors_>this.maxPlaylistRetries?1/0:Date.now()+1e3*playlistExclusionDuration,playlistToExclude.excludeUntil=excludeUntil,error.reason&&(playlistToExclude.lastExcludeReason_=error.reason),this.tech_.trigger("excludeplaylist"),this.tech_.trigger({type:"usage",name:"vhs-rendition-excluded"});const nextPlaylist=this.selectPlaylist();if(!nextPlaylist)return this.error="Playback cannot continue. No available working or supported playlists.",void this.trigger("error");const logFn=error.internal?this.logger_:videojs.log.warn,errorMessage=error.message?" "+error.message:"";logFn("".concat(error.internal?"Internal problem":"Problem"," encountered with playlist ").concat(playlistToExclude.id,".")+"".concat(errorMessage," Switching to playlist ").concat(nextPlaylist.id,".")),nextPlaylist.attributes.AUDIO!==playlistToExclude.attributes.AUDIO&&this.delegateLoaders_("audio",["abort","pause"]),nextPlaylist.attributes.SUBTITLES!==playlistToExclude.attributes.SUBTITLES&&this.delegateLoaders_("subtitle",["abort","pause"]),this.delegateLoaders_("main",["abort","pause"]);const delayDuration=nextPlaylist.targetDuration/2*1e3||5e3,shouldDelay="number"==typeof nextPlaylist.lastRequest&&Date.now()-nextPlaylist.lastRequest<=delayDuration;return this.switchMedia_(nextPlaylist,"exclude",isFinalRendition||shouldDelay)}pauseLoading(){this.delegateLoaders_("all",["abort","pause"]),this.stopABRTimer_()}delegateLoaders_(filter,fnNames){const loaders=[],dontFilterPlaylist="all"===filter;(dontFilterPlaylist||"main"===filter)&&loaders.push(this.mainPlaylistLoader_);const mediaTypes=[];(dontFilterPlaylist||"audio"===filter)&&mediaTypes.push("AUDIO"),(dontFilterPlaylist||"subtitle"===filter)&&(mediaTypes.push("CLOSED-CAPTIONS"),mediaTypes.push("SUBTITLES")),mediaTypes.forEach((mediaType=>{const loader=this.mediaTypes_[mediaType]&&this.mediaTypes_[mediaType].activePlaylistLoader;loader&&loaders.push(loader)})),["main","audio","subtitle"].forEach((name=>{const loader=this["".concat(name,"SegmentLoader_")];!loader||filter!==name&&"all"!==filter||loaders.push(loader)})),loaders.forEach((loader=>fnNames.forEach((fnName=>{"function"==typeof loader[fnName]&&loader[fnName]()}))))}setCurrentTime(currentTime){const buffered=findRange(this.tech_.buffered(),currentTime);return this.mainPlaylistLoader_&&this.mainPlaylistLoader_.media()&&this.mainPlaylistLoader_.media().segments?buffered&&buffered.length?currentTime:(this.mainSegmentLoader_.resetEverything(),this.mainSegmentLoader_.abort(),this.mediaTypes_.AUDIO.activePlaylistLoader&&(this.audioSegmentLoader_.resetEverything(),this.audioSegmentLoader_.abort()),this.mediaTypes_.SUBTITLES.activePlaylistLoader&&(this.subtitleSegmentLoader_.resetEverything(),this.subtitleSegmentLoader_.abort()),void this.load()):0}duration(){if(!this.mainPlaylistLoader_)return 0;const media=this.mainPlaylistLoader_.media();return media?media.endList?this.mediaSource?this.mediaSource.duration:Vhs$1.Playlist.duration(media):1/0:0}seekable(){return this.seekable_}onSyncInfoUpdate_(){let audioSeekable;if(!this.mainPlaylistLoader_)return;let media=this.mainPlaylistLoader_.media();if(!media)return;let expired=this.syncController_.getExpiredTime(media,this.duration());if(null===expired)return;const main=this.mainPlaylistLoader_.main,mainSeekable=Vhs$1.Playlist.seekable(media,expired,Vhs$1.Playlist.liveEdgeDelay(main,media));if(0===mainSeekable.length)return;if(this.mediaTypes_.AUDIO.activePlaylistLoader){if(media=this.mediaTypes_.AUDIO.activePlaylistLoader.media(),expired=this.syncController_.getExpiredTime(media,this.duration()),null===expired)return;if(audioSeekable=Vhs$1.Playlist.seekable(media,expired,Vhs$1.Playlist.liveEdgeDelay(main,media)),0===audioSeekable.length)return}let oldEnd,oldStart;this.seekable_&&this.seekable_.length&&(oldEnd=this.seekable_.end(0),oldStart=this.seekable_.start(0)),audioSeekable?audioSeekable.start(0)>mainSeekable.end(0)||mainSeekable.start(0)>audioSeekable.end(0)?this.seekable_=mainSeekable:this.seekable_=createTimeRanges([[audioSeekable.start(0)>mainSeekable.start(0)?audioSeekable.start(0):mainSeekable.start(0),audioSeekable.end(0)<mainSeekable.end(0)?audioSeekable.end(0):mainSeekable.end(0)]]):this.seekable_=mainSeekable,this.seekable_&&this.seekable_.length&&this.seekable_.end(0)===oldEnd&&this.seekable_.start(0)===oldStart||(this.logger_("seekable updated [".concat(printableRange(this.seekable_),"]")),this.tech_.trigger("seekablechanged"))}updateDuration(isLive){if(this.updateDuration_&&(this.mediaSource.removeEventListener("sourceopen",this.updateDuration_),this.updateDuration_=null),"open"!==this.mediaSource.readyState)return this.updateDuration_=this.updateDuration.bind(this,isLive),void this.mediaSource.addEventListener("sourceopen",this.updateDuration_);if(isLive){const seekable=this.seekable();if(!seekable.length)return;return void((isNaN(this.mediaSource.duration)||this.mediaSource.duration<seekable.end(seekable.length-1))&&this.sourceUpdater_.setDuration(seekable.end(seekable.length-1)))}const buffered=this.tech_.buffered();let duration=Vhs$1.Playlist.duration(this.mainPlaylistLoader_.media());buffered.length>0&&(duration=Math.max(duration,buffered.end(buffered.length-1))),this.mediaSource.duration!==duration&&this.sourceUpdater_.setDuration(duration)}dispose(){this.trigger("dispose"),this.decrypter_.terminate(),this.mainPlaylistLoader_.dispose(),this.mainSegmentLoader_.dispose(),this.loadOnPlay_&&this.tech_.off("play",this.loadOnPlay_),["AUDIO","SUBTITLES"].forEach((type=>{const groups=this.mediaTypes_[type].groups;for(const id in groups)groups[id].forEach((group=>{group.playlistLoader&&group.playlistLoader.dispose()}))})),this.audioSegmentLoader_.dispose(),this.subtitleSegmentLoader_.dispose(),this.sourceUpdater_.dispose(),this.timelineChangeController_.dispose(),this.stopABRTimer_(),this.updateDuration_&&this.mediaSource.removeEventListener("sourceopen",this.updateDuration_),this.mediaSource.removeEventListener("durationchange",this.handleDurationChange_),this.mediaSource.removeEventListener("sourceopen",this.handleSourceOpen_),this.mediaSource.removeEventListener("sourceended",this.handleSourceEnded_),this.off()}main(){return this.mainPlaylistLoader_.main}media(){return this.mainPlaylistLoader_.media()||this.initialMedia_}areMediaTypesKnown_(){const usingAudioLoader=!!this.mediaTypes_.AUDIO.activePlaylistLoader,hasMainMediaInfo=!!this.mainSegmentLoader_.getCurrentMediaInfo_(),hasAudioMediaInfo=!usingAudioLoader||!!this.audioSegmentLoader_.getCurrentMediaInfo_();return!(!hasMainMediaInfo||!hasAudioMediaInfo)}getCodecsOrExclude_(){const media={main:this.mainSegmentLoader_.getCurrentMediaInfo_()||{},audio:this.audioSegmentLoader_.getCurrentMediaInfo_()||{}},playlist=this.mainSegmentLoader_.getPendingSegmentPlaylist()||this.media();media.video=media.main;const playlistCodecs=codecsForPlaylist(this.main(),playlist),codecs={},usingAudioLoader=!!this.mediaTypes_.AUDIO.activePlaylistLoader;if(media.main.hasVideo&&(codecs.video=playlistCodecs.video||media.main.videoCodec||"avc1.4d400d"),media.main.isMuxed&&(codecs.video+=",".concat(playlistCodecs.audio||media.main.audioCodec||"mp4a.40.2")),(media.main.hasAudio&&!media.main.isMuxed||media.audio.hasAudio||usingAudioLoader)&&(codecs.audio=playlistCodecs.audio||media.main.audioCodec||media.audio.audioCodec||"mp4a.40.2",media.audio.isFmp4=media.main.hasAudio&&!media.main.isMuxed?media.main.isFmp4:media.audio.isFmp4),!codecs.audio&&!codecs.video)return void this.excludePlaylist({playlistToExclude:playlist,error:{message:"Could not determine codecs for playlist."},playlistExclusionDuration:1/0});const unsupportedCodecs={};let unsupportedAudio;if(["video","audio"].forEach((function(type){if(codecs.hasOwnProperty(type)&&(isFmp4=media[type].isFmp4,codec=codecs[type],!(isFmp4?browserSupportsCodec(codec):muxerSupportsCodec(codec)))){const supporter=media[type].isFmp4?"browser":"muxer";unsupportedCodecs[supporter]=unsupportedCodecs[supporter]||[],unsupportedCodecs[supporter].push(codecs[type]),"audio"===type&&(unsupportedAudio=supporter)}var isFmp4,codec})),usingAudioLoader&&unsupportedAudio&&playlist.attributes.AUDIO){const audioGroup=playlist.attributes.AUDIO;this.main().playlists.forEach((variant=>{(variant.attributes&&variant.attributes.AUDIO)===audioGroup&&variant!==playlist&&(variant.excludeUntil=1/0)})),this.logger_("excluding audio group ".concat(audioGroup," as ").concat(unsupportedAudio,' does not support codec(s): "').concat(codecs.audio,'"'))}if(!Object.keys(unsupportedCodecs).length){if(this.sourceUpdater_.hasCreatedSourceBuffers()&&!this.sourceUpdater_.canChangeType()){const switchMessages=[];if(["video","audio"].forEach((type=>{const newCodec=(parseCodecs(this.sourceUpdater_.codecs[type]||"")[0]||{}).type,oldCodec=(parseCodecs(codecs[type]||"")[0]||{}).type;newCodec&&oldCodec&&newCodec.toLowerCase()!==oldCodec.toLowerCase()&&switchMessages.push('"'.concat(this.sourceUpdater_.codecs[type],'" -> "').concat(codecs[type],'"'))})),switchMessages.length)return void this.excludePlaylist({playlistToExclude:playlist,error:{message:"Codec switching not supported: ".concat(switchMessages.join(", "),"."),internal:!0},playlistExclusionDuration:1/0})}return codecs}{const message=Object.keys(unsupportedCodecs).reduce(((acc,supporter)=>(acc&&(acc+=", "),acc+="".concat(supporter,' does not support codec(s): "').concat(unsupportedCodecs[supporter].join(","),'"'))),"")+".";this.excludePlaylist({playlistToExclude:playlist,error:{internal:!0,message:message},playlistExclusionDuration:1/0})}}tryToCreateSourceBuffers_(){if("open"!==this.mediaSource.readyState||this.sourceUpdater_.hasCreatedSourceBuffers())return;if(!this.areMediaTypesKnown_())return;const codecs=this.getCodecsOrExclude_();if(!codecs)return;this.sourceUpdater_.createSourceBuffers(codecs);const codecString=[codecs.video,codecs.audio].filter(Boolean).join(",");this.excludeIncompatibleVariants_(codecString)}excludeUnsupportedVariants_(){const playlists=this.main().playlists,ids=[];Object.keys(playlists).forEach((key=>{const variant=playlists[key];if(-1!==ids.indexOf(variant.id))return;ids.push(variant.id);const codecs=codecsForPlaylist(this.main,variant),unsupported=[];!codecs.audio||muxerSupportsCodec(codecs.audio)||browserSupportsCodec(codecs.audio)||unsupported.push("audio codec ".concat(codecs.audio)),!codecs.video||muxerSupportsCodec(codecs.video)||browserSupportsCodec(codecs.video)||unsupported.push("video codec ".concat(codecs.video)),codecs.text&&"stpp.ttml.im1t"===codecs.text&&unsupported.push("text codec ".concat(codecs.text)),unsupported.length&&(variant.excludeUntil=1/0,this.logger_("excluding ".concat(variant.id," for unsupported: ").concat(unsupported.join(", "))))}))}excludeIncompatibleVariants_(codecString){const ids=[],playlists=this.main().playlists,codecs=unwrapCodecList(parseCodecs(codecString)),codecCount_=codecCount(codecs),videoDetails=codecs.video&&parseCodecs(codecs.video)[0]||null,audioDetails=codecs.audio&&parseCodecs(codecs.audio)[0]||null;Object.keys(playlists).forEach((key=>{const variant=playlists[key];if(-1!==ids.indexOf(variant.id)||variant.excludeUntil===1/0)return;ids.push(variant.id);const exclusionReasons=[],variantCodecs=codecsForPlaylist(this.mainPlaylistLoader_.main,variant),variantCodecCount=codecCount(variantCodecs);if(variantCodecs.audio||variantCodecs.video){if(variantCodecCount!==codecCount_&&exclusionReasons.push('codec count "'.concat(variantCodecCount,'" !== "').concat(codecCount_,'"')),!this.sourceUpdater_.canChangeType()){const variantVideoDetails=variantCodecs.video&&parseCodecs(variantCodecs.video)[0]||null,variantAudioDetails=variantCodecs.audio&&parseCodecs(variantCodecs.audio)[0]||null;variantVideoDetails&&videoDetails&&variantVideoDetails.type.toLowerCase()!==videoDetails.type.toLowerCase()&&exclusionReasons.push('video codec "'.concat(variantVideoDetails.type,'" !== "').concat(videoDetails.type,'"')),variantAudioDetails&&audioDetails&&variantAudioDetails.type.toLowerCase()!==audioDetails.type.toLowerCase()&&exclusionReasons.push('audio codec "'.concat(variantAudioDetails.type,'" !== "').concat(audioDetails.type,'"'))}exclusionReasons.length&&(variant.excludeUntil=1/0,this.logger_("excluding ".concat(variant.id,": ").concat(exclusionReasons.join(" && "))))}}))}updateAdCues_(media){let offset=0;const seekable=this.seekable();seekable.length&&(offset=seekable.start(0)),function(media,track){let offset=arguments.length>2&&void 0!==arguments[2]?arguments[2]:0;if(!media.segments)return;let cue,mediaTime=offset;for(let i=0;i<media.segments.length;i++){const segment=media.segments[i];if(cue||(cue=findAdCue(track,mediaTime+segment.duration/2)),cue){if("cueIn"in segment){cue.endTime=mediaTime,cue.adEndTime=mediaTime,mediaTime+=segment.duration,cue=null;continue}if(mediaTime<cue.endTime){mediaTime+=segment.duration;continue}cue.endTime+=segment.duration}else if("cueOut"in segment&&(cue=new window.VTTCue(mediaTime,mediaTime+segment.duration,segment.cueOut),cue.adStartTime=mediaTime,cue.adEndTime=mediaTime+parseFloat(segment.cueOut),track.addCue(cue)),"cueOutCont"in segment){const[adOffset,adTotal]=segment.cueOutCont.split("/").map(parseFloat);cue=new window.VTTCue(mediaTime,mediaTime+segment.duration,""),cue.adStartTime=mediaTime-adOffset,cue.adEndTime=cue.adStartTime+adTotal,track.addCue(cue)}mediaTime+=segment.duration}}(media,this.cueTagsTrack_,offset)}goalBufferLength(){const currentTime=this.tech_.currentTime(),initial=Config.GOAL_BUFFER_LENGTH,rate=Config.GOAL_BUFFER_LENGTH_RATE,max=Math.max(initial,Config.MAX_GOAL_BUFFER_LENGTH);return Math.min(initial+currentTime*rate,max)}bufferLowWaterLine(){const currentTime=this.tech_.currentTime(),initial=Config.BUFFER_LOW_WATER_LINE,rate=Config.BUFFER_LOW_WATER_LINE_RATE,max=Math.max(initial,Config.MAX_BUFFER_LOW_WATER_LINE),newMax=Math.max(initial,Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE);return Math.min(initial+currentTime*rate,this.bufferBasedABR?newMax:max)}bufferHighWaterLine(){return Config.BUFFER_HIGH_WATER_LINE}}class Representation{constructor(vhsHandler,playlist,id){const{playlistController_:pc}=vhsHandler,qualityChangeFunction=pc.fastQualityChange_.bind(pc);if(playlist.attributes){const resolution=playlist.attributes.RESOLUTION;this.width=resolution&&resolution.width,this.height=resolution&&resolution.height,this.bandwidth=playlist.attributes.BANDWIDTH,this.frameRate=playlist.attributes["FRAME-RATE"]}var loader,playlistID,changePlaylistFn;this.codecs=codecsForPlaylist(pc.main(),playlist),this.playlist=playlist,this.id=id,this.enabled=(loader=vhsHandler.playlists,playlistID=playlist.id,changePlaylistFn=qualityChangeFunction,enable=>{const playlist=loader.main.playlists[playlistID],incompatible=isIncompatible(playlist),currentlyEnabled=isEnabled(playlist);return void 0===enable?currentlyEnabled:(enable?delete playlist.disabled:playlist.disabled=!0,enable===currentlyEnabled||incompatible||(changePlaylistFn(),enable?loader.trigger("renditionenabled"):loader.trigger("renditiondisabled")),enable)})}}const timerCancelEvents=["seeking","seeked","pause","playing","error"];class PlaybackWatcher{constructor(options){this.playlistController_=options.playlistController,this.tech_=options.tech,this.seekable=options.seekable,this.allowSeeksWithinUnsafeLiveWindow=options.allowSeeksWithinUnsafeLiveWindow,this.liveRangeSafeTimeDelta=options.liveRangeSafeTimeDelta,this.media=options.media,this.consecutiveUpdates=0,this.lastRecordedTime=null,this.checkCurrentTimeTimeout_=null,this.logger_=logger("PlaybackWatcher"),this.logger_("initialize");const playHandler=()=>this.monitorCurrentTime_(),canPlayHandler=()=>this.monitorCurrentTime_(),waitingHandler=()=>this.techWaiting_(),cancelTimerHandler=()=>this.resetTimeUpdate_(),pc=this.playlistController_,loaderTypes=["main","subtitle","audio"],loaderChecks={};loaderTypes.forEach((type=>{loaderChecks[type]={reset:()=>this.resetSegmentDownloads_(type),updateend:()=>this.checkSegmentDownloads_(type)},pc["".concat(type,"SegmentLoader_")].on("appendsdone",loaderChecks[type].updateend),pc["".concat(type,"SegmentLoader_")].on("playlistupdate",loaderChecks[type].reset),this.tech_.on(["seeked","seeking"],loaderChecks[type].reset)}));const setSeekingHandlers=fn=>{["main","audio"].forEach((type=>{pc["".concat(type,"SegmentLoader_")][fn]("appended",this.seekingAppendCheck_)}))};this.seekingAppendCheck_=()=>{this.fixesBadSeeks_()&&(this.consecutiveUpdates=0,this.lastRecordedTime=this.tech_.currentTime(),setSeekingHandlers("off"))},this.clearSeekingAppendCheck_=()=>setSeekingHandlers("off"),this.watchForBadSeeking_=()=>{this.clearSeekingAppendCheck_(),setSeekingHandlers("on")},this.tech_.on("seeked",this.clearSeekingAppendCheck_),this.tech_.on("seeking",this.watchForBadSeeking_),this.tech_.on("waiting",waitingHandler),this.tech_.on(timerCancelEvents,cancelTimerHandler),this.tech_.on("canplay",canPlayHandler),this.tech_.one("play",playHandler),this.dispose=()=>{this.clearSeekingAppendCheck_(),this.logger_("dispose"),this.tech_.off("waiting",waitingHandler),this.tech_.off(timerCancelEvents,cancelTimerHandler),this.tech_.off("canplay",canPlayHandler),this.tech_.off("play",playHandler),this.tech_.off("seeking",this.watchForBadSeeking_),this.tech_.off("seeked",this.clearSeekingAppendCheck_),loaderTypes.forEach((type=>{pc["".concat(type,"SegmentLoader_")].off("appendsdone",loaderChecks[type].updateend),pc["".concat(type,"SegmentLoader_")].off("playlistupdate",loaderChecks[type].reset),this.tech_.off(["seeked","seeking"],loaderChecks[type].reset)})),this.checkCurrentTimeTimeout_&&window.clearTimeout(this.checkCurrentTimeTimeout_),this.resetTimeUpdate_()}}monitorCurrentTime_(){this.checkCurrentTime_(),this.checkCurrentTimeTimeout_&&window.clearTimeout(this.checkCurrentTimeTimeout_),this.checkCurrentTimeTimeout_=window.setTimeout(this.monitorCurrentTime_.bind(this),250)}resetSegmentDownloads_(type){const loader=this.playlistController_["".concat(type,"SegmentLoader_")];this["".concat(type,"StalledDownloads_")]>0&&this.logger_("resetting possible stalled download count for ".concat(type," loader")),this["".concat(type,"StalledDownloads_")]=0,this["".concat(type,"Buffered_")]=loader.buffered_()}checkSegmentDownloads_(type){const pc=this.playlistController_,loader=pc["".concat(type,"SegmentLoader_")],buffered=loader.buffered_(),isBufferedDifferent=function(a,b){if(a===b)return!1;if(!a&&b||!b&&a)return!0;if(a.length!==b.length)return!0;for(let i=0;i<a.length;i++)if(a.start(i)!==b.start(i)||a.end(i)!==b.end(i))return!0;return!1}(this["".concat(type,"Buffered_")],buffered);this["".concat(type,"Buffered_")]=buffered,isBufferedDifferent?this.resetSegmentDownloads_(type):(this["".concat(type,"StalledDownloads_")]++,this.logger_("found #".concat(this["".concat(type,"StalledDownloads_")]," ").concat(type," appends that did not increase buffer (possible stalled download)"),{playlistId:loader.playlist_&&loader.playlist_.id,buffered:timeRangesToArray(buffered)}),this["".concat(type,"StalledDownloads_")]<10||(this.logger_("".concat(type," loader stalled download exclusion")),this.resetSegmentDownloads_(type),this.tech_.trigger({type:"usage",name:"vhs-".concat(type,"-download-exclusion")}),"subtitle"!==type&&pc.excludePlaylist({error:{message:"Excessive ".concat(type," segment downloading detected.")},playlistExclusionDuration:1/0})))}checkCurrentTime_(){if(this.tech_.paused()||this.tech_.seeking())return;const currentTime=this.tech_.currentTime(),buffered=this.tech_.buffered();if(this.lastRecordedTime===currentTime&&(!buffered.length||currentTime+.1>=buffered.end(buffered.length-1)))return this.techWaiting_();this.consecutiveUpdates>=5&&currentTime===this.lastRecordedTime?(this.consecutiveUpdates++,this.waiting_()):currentTime===this.lastRecordedTime?this.consecutiveUpdates++:(this.consecutiveUpdates=0,this.lastRecordedTime=currentTime)}resetTimeUpdate_(){this.consecutiveUpdates=0}fixesBadSeeks_(){if(!this.tech_.seeking())return!1;const seekable=this.seekable(),currentTime=this.tech_.currentTime();let seekTo;if(this.afterSeekableWindow_(seekable,currentTime,this.media(),this.allowSeeksWithinUnsafeLiveWindow)){seekTo=seekable.end(seekable.length-1)}if(this.beforeSeekableWindow_(seekable,currentTime)){const seekableStart=seekable.start(0);seekTo=seekableStart+(seekableStart===seekable.end(0)?0:.1)}if(void 0!==seekTo)return this.logger_("Trying to seek outside of seekable at time ".concat(currentTime," with ")+"seekable range ".concat(printableRange(seekable),". Seeking to ")+"".concat(seekTo,".")),this.tech_.setCurrentTime(seekTo),!0;const sourceUpdater=this.playlistController_.sourceUpdater_,buffered=this.tech_.buffered(),audioBuffered=sourceUpdater.audioBuffer?sourceUpdater.audioBuffered():null,videoBuffered=sourceUpdater.videoBuffer?sourceUpdater.videoBuffered():null,media=this.media(),minAppendedDuration=media.partTargetDuration?media.partTargetDuration:2*(media.targetDuration-.03333333333333333),bufferedToCheck=[audioBuffered,videoBuffered];for(let i=0;i<bufferedToCheck.length;i++){if(!bufferedToCheck[i])continue;if(timeAheadOf(bufferedToCheck[i],currentTime)<minAppendedDuration)return!1}const nextRange=findNextRange(buffered,currentTime);return 0!==nextRange.length&&(seekTo=nextRange.start(0)+.1,this.logger_("Buffered region starts (".concat(nextRange.start(0),") ")+" just beyond seek point (".concat(currentTime,"). Seeking to ").concat(seekTo,".")),this.tech_.setCurrentTime(seekTo),!0)}waiting_(){if(this.techWaiting_())return;const currentTime=this.tech_.currentTime(),buffered=this.tech_.buffered(),currentRange=findRange(buffered,currentTime);return currentRange.length&&currentTime+3<=currentRange.end(0)?(this.resetTimeUpdate_(),this.tech_.setCurrentTime(currentTime),this.logger_("Stopped at ".concat(currentTime," while inside a buffered region ")+"[".concat(currentRange.start(0)," -> ").concat(currentRange.end(0),"]. Attempting to resume ")+"playback by seeking to the current time."),void this.tech_.trigger({type:"usage",name:"vhs-unknown-waiting"})):void 0}techWaiting_(){const seekable=this.seekable(),currentTime=this.tech_.currentTime();if(this.tech_.seeking())return!0;if(this.beforeSeekableWindow_(seekable,currentTime)){const livePoint=seekable.end(seekable.length-1);return this.logger_("Fell out of live window at time ".concat(currentTime,". Seeking to ")+"live point (seekable end) ".concat(livePoint)),this.resetTimeUpdate_(),this.tech_.setCurrentTime(livePoint),this.tech_.trigger({type:"usage",name:"vhs-live-resync"}),!0}const sourceUpdater=this.tech_.vhs.playlistController_.sourceUpdater_,buffered=this.tech_.buffered();if(this.videoUnderflow_({audioBuffered:sourceUpdater.audioBuffered(),videoBuffered:sourceUpdater.videoBuffered(),currentTime:currentTime}))return this.resetTimeUpdate_(),this.tech_.setCurrentTime(currentTime),this.tech_.trigger({type:"usage",name:"vhs-video-underflow"}),!0;const nextRange=findNextRange(buffered,currentTime);return nextRange.length>0&&(this.logger_("Stopped at ".concat(currentTime," and seeking to ").concat(nextRange.start(0))),this.resetTimeUpdate_(),this.skipTheGap_(currentTime),!0)}afterSeekableWindow_(seekable,currentTime,playlist){let allowSeeksWithinUnsafeLiveWindow=arguments.length>3&&void 0!==arguments[3]&&arguments[3];if(!seekable.length)return!1;let allowedEnd=seekable.end(seekable.length-1)+.1;return!playlist.endList&&allowSeeksWithinUnsafeLiveWindow&&(allowedEnd=seekable.end(seekable.length-1)+3*playlist.targetDuration),currentTime>allowedEnd}beforeSeekableWindow_(seekable,currentTime){return!!(seekable.length&&seekable.start(0)>0&&currentTime<seekable.start(0)-this.liveRangeSafeTimeDelta)}videoUnderflow_(_ref79){let gap,{videoBuffered:videoBuffered,audioBuffered:audioBuffered,currentTime:currentTime}=_ref79;if(videoBuffered){if(videoBuffered.length&&audioBuffered.length){const lastVideoRange=findRange(videoBuffered,currentTime-3),videoRange=findRange(videoBuffered,currentTime),audioRange=findRange(audioBuffered,currentTime);audioRange.length&&!videoRange.length&&lastVideoRange.length&&(gap={start:lastVideoRange.end(0),end:audioRange.end(0)})}else{findNextRange(videoBuffered,currentTime).length||(gap=this.gapFromVideoUnderflow_(videoBuffered,currentTime))}return!!gap&&(this.logger_("Encountered a gap in video from ".concat(gap.start," to ").concat(gap.end,". ")+"Seeking to current time ".concat(currentTime)),!0)}}skipTheGap_(scheduledCurrentTime){const buffered=this.tech_.buffered(),currentTime=this.tech_.currentTime(),nextRange=findNextRange(buffered,currentTime);this.resetTimeUpdate_(),0!==nextRange.length&&currentTime===scheduledCurrentTime&&(this.logger_("skipTheGap_:","currentTime:",currentTime,"scheduled currentTime:",scheduledCurrentTime,"nextRange start:",nextRange.start(0)),this.tech_.setCurrentTime(nextRange.start(0)+.03333333333333333),this.tech_.trigger({type:"usage",name:"vhs-gap-skip"}))}gapFromVideoUnderflow_(buffered,currentTime){const gaps=function(buffered){if(buffered.length<2)return createTimeRanges();const ranges=[];for(let i=1;i<buffered.length;i++){const start=buffered.end(i-1),end=buffered.start(i);ranges.push([start,end])}return createTimeRanges(ranges)}(buffered);for(let i=0;i<gaps.length;i++){const start=gaps.start(i),end=gaps.end(i);if(currentTime-start<4&&currentTime-start>2)return{start:start,end:end}}return null}}const defaultOptions={errorInterval:30,getSource(next){return next(this.tech({IWillNotUseThisInPlugins:!0}).currentSource_||this.currentSource())}},initPlugin=function(player,options){let lastCalled=0,seekTo=0;const localOptions=merge(defaultOptions,options);player.ready((()=>{player.trigger({type:"usage",name:"vhs-error-reload-initialized"})}));const loadedMetadataHandler=function(){seekTo&&player.currentTime(seekTo)},setSource=function(sourceObj){null!=sourceObj&&(seekTo=player.duration()!==1/0&&player.currentTime()||0,player.one("loadedmetadata",loadedMetadataHandler),player.src(sourceObj),player.trigger({type:"usage",name:"vhs-error-reload"}),player.play())},errorHandler=function(){if(Date.now()-lastCalled<1e3*localOptions.errorInterval)player.trigger({type:"usage",name:"vhs-error-reload-canceled"});else{if(localOptions.getSource&&"function"==typeof localOptions.getSource)return lastCalled=Date.now(),localOptions.getSource.call(player,setSource);videojs.log.error("ERROR: reloadSourceOnError - The option getSource must be a function!")}},cleanupEvents=function(){player.off("loadedmetadata",loadedMetadataHandler),player.off("error",errorHandler),player.off("dispose",cleanupEvents)};player.on("error",errorHandler),player.on("dispose",cleanupEvents),player.reloadSourceOnError=function(newOptions){cleanupEvents(),initPlugin(player,newOptions)}},reloadSourceOnError=function(options){initPlugin(this,options)};const Vhs={PlaylistLoader:PlaylistLoader,Playlist:Playlist,utils:utils,STANDARD_PLAYLIST_SELECTOR:lastBandwidthSelector,INITIAL_PLAYLIST_SELECTOR:function(){const playlists=this.playlists.main.playlists.filter(Playlist.isEnabled);stableSort(playlists,((a,b)=>comparePlaylistBandwidth(a,b)));return playlists.filter((playlist=>!!codecsForPlaylist(this.playlists.main,playlist).video))[0]||null},lastBandwidthSelector:lastBandwidthSelector,movingAverageBandwidthSelector:function(decay){let average=-1,lastSystemBandwidth=-1;if(decay<0||decay>1)throw new Error("Moving average bandwidth decay must be between 0 and 1.");return function(){const pixelRatio=this.useDevicePixelRatio&&window.devicePixelRatio||1;return average<0&&(average=this.systemBandwidth,lastSystemBandwidth=this.systemBandwidth),this.systemBandwidth>0&&this.systemBandwidth!==lastSystemBandwidth&&(average=decay*this.systemBandwidth+(1-decay)*average,lastSystemBandwidth=this.systemBandwidth),simpleSelector(this.playlists.main,average,parseInt(safeGetComputedStyle(this.tech_.el(),"width"),10)*pixelRatio,parseInt(safeGetComputedStyle(this.tech_.el(),"height"),10)*pixelRatio,this.limitRenditionByPlayerDimensions,this.playlistController_)}},comparePlaylistBandwidth:comparePlaylistBandwidth,comparePlaylistResolution:function(left,right){let leftWidth,rightWidth;return left.attributes.RESOLUTION&&left.attributes.RESOLUTION.width&&(leftWidth=left.attributes.RESOLUTION.width),leftWidth=leftWidth||window.Number.MAX_VALUE,right.attributes.RESOLUTION&&right.attributes.RESOLUTION.width&&(rightWidth=right.attributes.RESOLUTION.width),rightWidth=rightWidth||window.Number.MAX_VALUE,leftWidth===rightWidth&&left.attributes.BANDWIDTH&&right.attributes.BANDWIDTH?left.attributes.BANDWIDTH-right.attributes.BANDWIDTH:leftWidth-rightWidth},xhr:xhrFactory()};Object.keys(Config).forEach((prop=>{Object.defineProperty(Vhs,prop,{get:()=>(videojs.log.warn("using Vhs.".concat(prop," is UNSAFE be sure you know what you are doing")),Config[prop]),set(value){videojs.log.warn("using Vhs.".concat(prop," is UNSAFE be sure you know what you are doing")),"number"!=typeof value||value<0?videojs.log.warn("value of Vhs.".concat(prop," must be greater than or equal to 0")):Config[prop]=value}})}));const handleVhsMediaChange=function(qualityLevels,playlistLoader){const newPlaylist=playlistLoader.media();let selectedIndex=-1;for(let i=0;i<qualityLevels.length;i++)if(qualityLevels[i].id===newPlaylist.id){selectedIndex=i;break}qualityLevels.selectedIndex_=selectedIndex,qualityLevels.trigger({selectedIndex:selectedIndex,type:"change"})};Vhs.canPlaySource=function(){return videojs.log.warn("VHS is no longer a tech. Please remove it from your player's techOrder.")};const waitForKeySessionCreation=_ref80=>{let{player:player,sourceKeySystems:sourceKeySystems,audioMedia:audioMedia,mainPlaylists:mainPlaylists}=_ref80;if(!player.eme.initializeMediaKeys)return Promise.resolve();const keySystemsOptionsArr=((playlists,keySystems)=>playlists.reduce(((keySystemsArr,playlist)=>{if(!playlist.contentProtection)return keySystemsArr;const keySystemsOptions=keySystems.reduce(((keySystemsObj,keySystem)=>{const keySystemOptions=playlist.contentProtection[keySystem];return keySystemOptions&&keySystemOptions.pssh&&(keySystemsObj[keySystem]={pssh:keySystemOptions.pssh}),keySystemsObj}),{});return Object.keys(keySystemsOptions).length&&keySystemsArr.push(keySystemsOptions),keySystemsArr}),[]))(audioMedia?mainPlaylists.concat([audioMedia]):mainPlaylists,Object.keys(sourceKeySystems)),initializationFinishedPromises=[],keySessionCreatedPromises=[];return keySystemsOptionsArr.forEach((keySystemsOptions=>{keySessionCreatedPromises.push(new Promise(((resolve,reject)=>{player.tech_.one("keysessioncreated",resolve)}))),initializationFinishedPromises.push(new Promise(((resolve,reject)=>{player.eme.initializeMediaKeys({keySystems:keySystemsOptions},(err=>{err?reject(err):resolve()}))})))})),Promise.race([Promise.all(initializationFinishedPromises),Promise.race(keySessionCreatedPromises)])},setupEmeOptions=_ref81=>{let{player:player,sourceKeySystems:sourceKeySystems,media:media,audioMedia:audioMedia}=_ref81;const sourceOptions=((keySystemOptions,mainPlaylist,audioPlaylist)=>{if(!keySystemOptions)return keySystemOptions;let codecs={};mainPlaylist&&mainPlaylist.attributes&&mainPlaylist.attributes.CODECS&&(codecs=unwrapCodecList(parseCodecs(mainPlaylist.attributes.CODECS))),audioPlaylist&&audioPlaylist.attributes&&audioPlaylist.attributes.CODECS&&(codecs.audio=audioPlaylist.attributes.CODECS);const videoContentType=getMimeForCodec(codecs.video),audioContentType=getMimeForCodec(codecs.audio),keySystemContentTypes={};for(const keySystem in keySystemOptions)keySystemContentTypes[keySystem]={},audioContentType&&(keySystemContentTypes[keySystem].audioContentType=audioContentType),videoContentType&&(keySystemContentTypes[keySystem].videoContentType=videoContentType),mainPlaylist.contentProtection&&mainPlaylist.contentProtection[keySystem]&&mainPlaylist.contentProtection[keySystem].pssh&&(keySystemContentTypes[keySystem].pssh=mainPlaylist.contentProtection[keySystem].pssh),"string"==typeof keySystemOptions[keySystem]&&(keySystemContentTypes[keySystem].url=keySystemOptions[keySystem]);return merge(keySystemOptions,keySystemContentTypes)})(sourceKeySystems,media,audioMedia);return!!sourceOptions&&(player.currentSource().keySystems=sourceOptions,!(sourceOptions&&!player.eme)||(videojs.log.warn("DRM encrypted source cannot be decrypted without a DRM plugin"),!1))},getVhsLocalStorage=()=>{if(!window.localStorage)return null;const storedObject=window.localStorage.getItem("videojs-vhs");if(!storedObject)return null;try{return JSON.parse(storedObject)}catch(e){return null}};Vhs.supportsNativeHls=function(){if(!document||!document.createElement)return!1;const video=document.createElement("video");if(!videojs.getTech("Html5").isSupported())return!1;return["application/vnd.apple.mpegurl","audio/mpegurl","audio/x-mpegurl","application/x-mpegurl","video/x-mpegurl","video/mpegurl","application/mpegurl"].some((function(canItPlay){return/maybe|probably/i.test(video.canPlayType(canItPlay))}))}(),Vhs.supportsNativeDash=!!(document&&document.createElement&&videojs.getTech("Html5").isSupported())&&/maybe|probably/i.test(document.createElement("video").canPlayType("application/dash+xml")),Vhs.supportsTypeNatively=type=>"hls"===type?Vhs.supportsNativeHls:"dash"===type&&Vhs.supportsNativeDash,Vhs.isSupported=function(){return videojs.log.warn("VHS is no longer a tech. Please remove it from your player's techOrder.")};const Component=videojs.getComponent("Component");class VhsHandler extends Component{constructor(source,tech,options){if(super(tech,options.vhs),"number"==typeof options.initialBandwidth&&(this.options_.bandwidth=options.initialBandwidth),this.logger_=logger("VhsHandler"),tech.options_&&tech.options_.playerId){const _player=videojs.getPlayer(tech.options_.playerId);this.player_=_player}if(this.tech_=tech,this.source_=source,this.stats={},this.ignoreNextSeekingEvent_=!1,this.setOptions_(),this.options_.overrideNative&&tech.overrideNativeAudioTracks&&tech.overrideNativeVideoTracks)tech.overrideNativeAudioTracks(!0),tech.overrideNativeVideoTracks(!0);else if(this.options_.overrideNative&&(tech.featuresNativeVideoTracks||tech.featuresNativeAudioTracks))throw new Error("Overriding native VHS requires emulated tracks. See https://git.io/vMpjB");this.on(document,["fullscreenchange","webkitfullscreenchange","mozfullscreenchange","MSFullscreenChange"],(event=>{const fullscreenElement=document.fullscreenElement||document.webkitFullscreenElement||document.mozFullScreenElement||document.msFullscreenElement;fullscreenElement&&fullscreenElement.contains(this.tech_.el())?this.playlistController_.fastQualityChange_():this.playlistController_.checkABR_()})),this.on(this.tech_,"seeking",(function(){this.ignoreNextSeekingEvent_?this.ignoreNextSeekingEvent_=!1:this.setCurrentTime(this.tech_.currentTime())})),this.on(this.tech_,"error",(function(){this.tech_.error()&&this.playlistController_&&this.playlistController_.pauseLoading()})),this.on(this.tech_,"play",this.play)}setOptions_(){if(this.options_.withCredentials=this.options_.withCredentials||!1,this.options_.limitRenditionByPlayerDimensions=!1!==this.options_.limitRenditionByPlayerDimensions,this.options_.useDevicePixelRatio=this.options_.useDevicePixelRatio||!1,this.options_.useBandwidthFromLocalStorage=void 0!==this.source_.useBandwidthFromLocalStorage?this.source_.useBandwidthFromLocalStorage:this.options_.useBandwidthFromLocalStorage||!1,this.options_.useNetworkInformationApi=this.options_.useNetworkInformationApi||!1,this.options_.useDtsForTimestampOffset=this.options_.useDtsForTimestampOffset||!1,this.options_.customTagParsers=this.options_.customTagParsers||[],this.options_.customTagMappers=this.options_.customTagMappers||[],this.options_.cacheEncryptionKeys=this.options_.cacheEncryptionKeys||!1,this.options_.llhls=!1!==this.options_.llhls,this.options_.bufferBasedABR=this.options_.bufferBasedABR||!1,"number"!=typeof this.options_.playlistExclusionDuration&&(this.options_.playlistExclusionDuration=300),"number"!=typeof this.options_.bandwidth&&this.options_.useBandwidthFromLocalStorage){const storedObject=getVhsLocalStorage();storedObject&&storedObject.bandwidth&&(this.options_.bandwidth=storedObject.bandwidth,this.tech_.trigger({type:"usage",name:"vhs-bandwidth-from-local-storage"})),storedObject&&storedObject.throughput&&(this.options_.throughput=storedObject.throughput,this.tech_.trigger({type:"usage",name:"vhs-throughput-from-local-storage"}))}"number"!=typeof this.options_.bandwidth&&(this.options_.bandwidth=Config.INITIAL_BANDWIDTH),this.options_.enableLowInitialPlaylist=this.options_.enableLowInitialPlaylist&&this.options_.bandwidth===Config.INITIAL_BANDWIDTH,["withCredentials","useDevicePixelRatio","limitRenditionByPlayerDimensions","bandwidth","customTagParsers","customTagMappers","cacheEncryptionKeys","playlistSelector","initialPlaylistSelector","bufferBasedABR","liveRangeSafeTimeDelta","llhls","useNetworkInformationApi","useDtsForTimestampOffset","exactManifestTimings","leastPixelDiffSelector"].forEach((option=>{void 0!==this.source_[option]&&(this.options_[option]=this.source_[option])})),this.limitRenditionByPlayerDimensions=this.options_.limitRenditionByPlayerDimensions,this.useDevicePixelRatio=this.options_.useDevicePixelRatio}src(src,type){if(!src)return;var dataUri;this.setOptions_(),this.options_.src=0===(dataUri=this.source_.src).toLowerCase().indexOf("data:application/vnd.videojs.vhs+json,")?JSON.parse(dataUri.substring(dataUri.indexOf(",")+1)):dataUri,this.options_.tech=this.tech_,this.options_.externVhs=Vhs,this.options_.sourceType=simpleTypeFromSourceType(type),this.options_.seekTo=time=>{this.tech_.setCurrentTime(time)},this.playlistController_=new PlaylistController(this.options_);const playbackWatcherOptions=merge({liveRangeSafeTimeDelta:.1},this.options_,{seekable:()=>this.seekable(),media:()=>this.playlistController_.media(),playlistController:this.playlistController_});this.playbackWatcher_=new PlaybackWatcher(playbackWatcherOptions),this.playlistController_.on("error",(()=>{const player=videojs.players[this.tech_.options_.playerId];let error=this.playlistController_.error;"object"!=typeof error||error.code?"string"==typeof error&&(error={message:error,code:3}):error.code=3,player.error(error)}));const defaultSelector=this.options_.bufferBasedABR?Vhs.movingAverageBandwidthSelector(.55):Vhs.STANDARD_PLAYLIST_SELECTOR;this.playlistController_.selectPlaylist=this.selectPlaylist?this.selectPlaylist.bind(this):defaultSelector.bind(this),this.playlistController_.selectInitialPlaylist=Vhs.INITIAL_PLAYLIST_SELECTOR.bind(this),this.playlists=this.playlistController_.mainPlaylistLoader_,this.mediaSource=this.playlistController_.mediaSource,Object.defineProperties(this,{selectPlaylist:{get(){return this.playlistController_.selectPlaylist},set(selectPlaylist){this.playlistController_.selectPlaylist=selectPlaylist.bind(this)}},throughput:{get(){return this.playlistController_.mainSegmentLoader_.throughput.rate},set(throughput){this.playlistController_.mainSegmentLoader_.throughput.rate=throughput,this.playlistController_.mainSegmentLoader_.throughput.count=1}},bandwidth:{get(){let playerBandwidthEst=this.playlistController_.mainSegmentLoader_.bandwidth;const networkInformation=window.navigator.connection||window.navigator.mozConnection||window.navigator.webkitConnection;if(this.options_.useNetworkInformationApi&&networkInformation){const networkInfoBandwidthEstBitsPerSec=1e3*networkInformation.downlink*1e3;playerBandwidthEst=networkInfoBandwidthEstBitsPerSec>=1e7&&playerBandwidthEst>=1e7?Math.max(playerBandwidthEst,networkInfoBandwidthEstBitsPerSec):networkInfoBandwidthEstBitsPerSec}return playerBandwidthEst},set(bandwidth){this.playlistController_.mainSegmentLoader_.bandwidth=bandwidth,this.playlistController_.mainSegmentLoader_.throughput={rate:0,count:0}}},systemBandwidth:{get(){const invBandwidth=1/(this.bandwidth||1);let invThroughput;invThroughput=this.throughput>0?1/this.throughput:0;return Math.floor(1/(invBandwidth+invThroughput))},set(){videojs.log.error('The "systemBandwidth" property is read-only')}}}),this.options_.bandwidth&&(this.bandwidth=this.options_.bandwidth),this.options_.throughput&&(this.throughput=this.options_.throughput),Object.defineProperties(this.stats,{bandwidth:{get:()=>this.bandwidth||0,enumerable:!0},mediaRequests:{get:()=>this.playlistController_.mediaRequests_()||0,enumerable:!0},mediaRequestsAborted:{get:()=>this.playlistController_.mediaRequestsAborted_()||0,enumerable:!0},mediaRequestsTimedout:{get:()=>this.playlistController_.mediaRequestsTimedout_()||0,enumerable:!0},mediaRequestsErrored:{get:()=>this.playlistController_.mediaRequestsErrored_()||0,enumerable:!0},mediaTransferDuration:{get:()=>this.playlistController_.mediaTransferDuration_()||0,enumerable:!0},mediaBytesTransferred:{get:()=>this.playlistController_.mediaBytesTransferred_()||0,enumerable:!0},mediaSecondsLoaded:{get:()=>this.playlistController_.mediaSecondsLoaded_()||0,enumerable:!0},mediaAppends:{get:()=>this.playlistController_.mediaAppends_()||0,enumerable:!0},mainAppendsToLoadedData:{get:()=>this.playlistController_.mainAppendsToLoadedData_()||0,enumerable:!0},audioAppendsToLoadedData:{get:()=>this.playlistController_.audioAppendsToLoadedData_()||0,enumerable:!0},appendsToLoadedData:{get:()=>this.playlistController_.appendsToLoadedData_()||0,enumerable:!0},timeToLoadedData:{get:()=>this.playlistController_.timeToLoadedData_()||0,enumerable:!0},buffered:{get:()=>timeRangesToArray(this.tech_.buffered()),enumerable:!0},currentTime:{get:()=>this.tech_.currentTime(),enumerable:!0},currentSource:{get:()=>this.tech_.currentSource_,enumerable:!0},currentTech:{get:()=>this.tech_.name_,enumerable:!0},duration:{get:()=>this.tech_.duration(),enumerable:!0},main:{get:()=>this.playlists.main,enumerable:!0},playerDimensions:{get:()=>this.tech_.currentDimensions(),enumerable:!0},seekable:{get:()=>timeRangesToArray(this.tech_.seekable()),enumerable:!0},timestamp:{get:()=>Date.now(),enumerable:!0},videoPlaybackQuality:{get:()=>this.tech_.getVideoPlaybackQuality(),enumerable:!0}}),this.tech_.one("canplay",this.playlistController_.setupFirstPlay.bind(this.playlistController_)),this.tech_.on("bandwidthupdate",(()=>{this.options_.useBandwidthFromLocalStorage&&(options=>{if(!window.localStorage)return!1;let objectToStore=getVhsLocalStorage();objectToStore=objectToStore?merge(objectToStore,options):options;try{window.localStorage.setItem("videojs-vhs",JSON.stringify(objectToStore))}catch(e){return!1}})({bandwidth:this.bandwidth,throughput:Math.round(this.throughput)})})),this.playlistController_.on("selectedinitialmedia",(()=>{var vhsHandler;(vhsHandler=this).representations=()=>{const main=vhsHandler.playlistController_.main(),playlists=isAudioOnly(main)?vhsHandler.playlistController_.getAudioTrackPlaylists_():main.playlists;return playlists?playlists.filter((media=>!isIncompatible(media))).map(((e,i)=>new Representation(vhsHandler,e,e.id))):[]}})),this.playlistController_.sourceUpdater_.on("createdsourcebuffers",(()=>{this.setupEme_()})),this.on(this.playlistController_,"progress",(function(){this.tech_.trigger("progress")})),this.on(this.playlistController_,"firstplay",(function(){this.ignoreNextSeekingEvent_=!0})),this.setupQualityLevels_(),this.tech_.el()&&(this.mediaSourceUrl_=window.URL.createObjectURL(this.playlistController_.mediaSource),this.tech_.src(this.mediaSourceUrl_))}createKeySessions_(){const audioPlaylistLoader=this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader;this.logger_("waiting for EME key session creation"),waitForKeySessionCreation({player:this.player_,sourceKeySystems:this.source_.keySystems,audioMedia:audioPlaylistLoader&&audioPlaylistLoader.media(),mainPlaylists:this.playlists.main.playlists}).then((()=>{this.logger_("created EME key session"),this.playlistController_.sourceUpdater_.initializedEme()})).catch((err=>{this.logger_("error while creating EME key session",err),this.player_.error({message:"Failed to initialize media keys for EME",code:3})}))}handleWaitingForKey_(){this.logger_("waitingforkey fired, attempting to create any new key sessions"),this.createKeySessions_()}setupEme_(){const audioPlaylistLoader=this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader,didSetupEmeOptions=setupEmeOptions({player:this.player_,sourceKeySystems:this.source_.keySystems,media:this.playlists.media(),audioMedia:audioPlaylistLoader&&audioPlaylistLoader.media()});this.player_.tech_.on("keystatuschange",(e=>{if("output-restricted"!==e.status)return;const mainPlaylist=this.playlistController_.main();if(!mainPlaylist||!mainPlaylist.playlists)return;const excludedHDPlaylists=[];mainPlaylist.playlists.forEach((playlist=>{playlist&&playlist.attributes&&playlist.attributes.RESOLUTION&&playlist.attributes.RESOLUTION.height>=720&&(!playlist.excludeUntil||playlist.excludeUntil<1/0)&&(playlist.excludeUntil=1/0,excludedHDPlaylists.push(playlist))})),excludedHDPlaylists.length&&(videojs.log.warn('DRM keystatus changed to "output-restricted." Removing the following HD playlists that will most likely fail to play and clearing the buffer. This may be due to HDCP restrictions on the stream and the capabilities of the current device.',...excludedHDPlaylists),this.playlistController_.fastQualityChange_())})),this.handleWaitingForKey_=this.handleWaitingForKey_.bind(this),this.player_.tech_.on("waitingforkey",this.handleWaitingForKey_),11!==videojs.browser.IE_VERSION&&didSetupEmeOptions?this.createKeySessions_():this.playlistController_.sourceUpdater_.initializedEme()}setupQualityLevels_(){const player=videojs.players[this.tech_.options_.playerId];player&&player.qualityLevels&&!this.qualityLevels_&&(this.qualityLevels_=player.qualityLevels(),this.playlistController_.on("selectedinitialmedia",(()=>{var qualityLevels,vhs;qualityLevels=this.qualityLevels_,(vhs=this).representations().forEach((rep=>{qualityLevels.addQualityLevel(rep)})),handleVhsMediaChange(qualityLevels,vhs.playlists)})),this.playlists.on("mediachange",(()=>{handleVhsMediaChange(this.qualityLevels_,this.playlists)})))}static version(){return{"@videojs/http-streaming":"3.0.2","mux.js":"6.3.0","mpd-parser":"1.0.1","m3u8-parser":"6.0.0","aes-decrypter":"4.0.1"}}version(){return this.constructor.version()}canChangeType(){return SourceUpdater.canChangeType()}play(){this.playlistController_.play()}setCurrentTime(currentTime){this.playlistController_.setCurrentTime(currentTime)}duration(){return this.playlistController_.duration()}seekable(){return this.playlistController_.seekable()}dispose(){this.playbackWatcher_&&this.playbackWatcher_.dispose(),this.playlistController_&&this.playlistController_.dispose(),this.qualityLevels_&&this.qualityLevels_.dispose(),this.tech_&&this.tech_.vhs&&delete this.tech_.vhs,this.mediaSourceUrl_&&window.URL.revokeObjectURL&&(window.URL.revokeObjectURL(this.mediaSourceUrl_),this.mediaSourceUrl_=null),this.tech_&&this.tech_.off("waitingforkey",this.handleWaitingForKey_),super.dispose()}convertToProgramTime(time,callback){return getProgramTime({playlist:this.playlistController_.media(),time:time,callback:callback})}seekToProgramTime(programTime,callback){let pauseAfterSeek=!(arguments.length>2&&void 0!==arguments[2])||arguments[2],retryCount=arguments.length>3&&void 0!==arguments[3]?arguments[3]:2;return seekToProgramTime({programTime:programTime,playlist:this.playlistController_.media(),retryCount:retryCount,pauseAfterSeek:pauseAfterSeek,seekTo:this.options_.seekTo,tech:this.options_.tech,callback:callback})}}const VhsSourceHandler={name:"videojs-http-streaming",VERSION:"3.0.2",canHandleSource(srcObj){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};const localOptions=merge(videojs.options,options);return VhsSourceHandler.canPlayType(srcObj.type,localOptions)},handleSource(source,tech){let options=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};const localOptions=merge(videojs.options,options);return tech.vhs=new VhsHandler(source,tech,localOptions),tech.vhs.xhr=xhrFactory(),tech.vhs.src(source.src,source.type),tech.vhs},canPlayType(type,options){const simpleType=simpleTypeFromSourceType(type);if(!simpleType)return"";const overrideNative=VhsSourceHandler.getOverrideNative(options);return!Vhs.supportsTypeNatively(simpleType)||overrideNative?"maybe":""},getOverrideNative(){let options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};const{vhs:vhs={}}=options,defaultOverrideNative=!(videojs.browser.IS_ANY_SAFARI||videojs.browser.IS_IOS),{overrideNative:overrideNative=defaultOverrideNative}=vhs;return overrideNative}};return browserSupportsCodec("avc1.4d400d,mp4a.40.2")&&videojs.getTech("Html5").registerSourceHandler(VhsSourceHandler,0),videojs.VhsHandler=VhsHandler,videojs.VhsSourceHandler=VhsSourceHandler,videojs.Vhs=Vhs,videojs.use||videojs.registerComponent("Vhs",Vhs),videojs.options.vhs=videojs.options.vhs||{},videojs.getPlugin&&videojs.getPlugin("reloadSourceOnError")||videojs.registerPlugin("reloadSourceOnError",reloadSourceOnError),videojs}));
+/*! @name aes-decrypter @version 4.0.1 @license Apache-2.0 */done(null,(padded=decrypted).subarray(0,padded.byteLength-padded[padded.byteLength-1]))}))}static get STEP(){return 32e3}decryptChunk_(encrypted,key,initVector,decrypted){return function(){const bytes=function(encrypted,key,initVector){const encrypted32=new Int32Array(encrypted.buffer,encrypted.byteOffset,encrypted.byteLength>>2),decipher=new AES(Array.prototype.slice.call(key)),decrypted=new Uint8Array(encrypted.byteLength),decrypted32=new Int32Array(decrypted.buffer);let init0,init1,init2,init3,encrypted0,encrypted1,encrypted2,encrypted3,wordIx;for(init0=initVector[0],init1=initVector[1],init2=initVector[2],init3=initVector[3],wordIx=0;wordIx<encrypted32.length;wordIx+=4)encrypted0=ntoh(encrypted32[wordIx]),encrypted1=ntoh(encrypted32[wordIx+1]),encrypted2=ntoh(encrypted32[wordIx+2]),encrypted3=ntoh(encrypted32[wordIx+3]),decipher.decrypt(encrypted0,encrypted1,encrypted2,encrypted3,decrypted32,wordIx),decrypted32[wordIx]=ntoh(decrypted32[wordIx]^init0),decrypted32[wordIx+1]=ntoh(decrypted32[wordIx+1]^init1),decrypted32[wordIx+2]=ntoh(decrypted32[wordIx+2]^init2),decrypted32[wordIx+3]=ntoh(decrypted32[wordIx+3]^init3),init0=encrypted0,init1=encrypted1,init2=encrypted2,init3=encrypted3;return decrypted}(encrypted,key,initVector);decrypted.set(bytes,encrypted.byteOffset)}}}var win,commonjsGlobal="undefined"!=typeof globalThis?globalThis:"undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:{};win="undefined"!=typeof window?window:void 0!==commonjsGlobal?commonjsGlobal:"undefined"!=typeof self?self:{};var BigInt=win.BigInt||Number;BigInt("0x1"),BigInt("0x100"),BigInt("0x10000"),BigInt("0x1000000"),BigInt("0x100000000"),BigInt("0x10000000000"),BigInt("0x1000000000000"),BigInt("0x100000000000000"),BigInt("0x10000000000000000"),function(){var a=new Uint16Array([65484]),b=new Uint8Array(a.buffer,a.byteOffset,a.byteLength);255===b[0]||b[0]}();const createTransferableMessage=function(message){const transferable={};return Object.keys(message).forEach((key=>{const value=message[key];var obj;obj=value,("function"===ArrayBuffer.isView?ArrayBuffer.isView(obj):obj&&obj.buffer instanceof ArrayBuffer)?transferable[key]={bytes:value.buffer,byteOffset:value.byteOffset,byteLength:value.byteLength}:transferable[key]=value})),transferable};self.onmessage=function(event){const data=event.data,encrypted=new Uint8Array(data.encrypted.bytes,data.encrypted.byteOffset,data.encrypted.byteLength),key=new Uint32Array(data.key.bytes,data.key.byteOffset,data.key.byteLength/4),iv=new Uint32Array(data.iv.bytes,data.iv.byteOffset,data.iv.byteLength/4);new Decrypter(encrypted,key,iv,(function(err,bytes){self.postMessage(createTransferableMessage({source:data.source,decrypted:bytes}),[bytes.buffer])}))}})));var Decrypter=factory(workerCode);const audioTrackKind_=properties=>{let kind=properties.default?"main":"alternative";return properties.characteristics&&properties.characteristics.indexOf("public.accessibility.describes-video")>=0&&(kind="main-desc"),kind},stopLoaders=(segmentLoader,mediaType)=>{segmentLoader.abort(),segmentLoader.pause(),mediaType&&mediaType.activePlaylistLoader&&(mediaType.activePlaylistLoader.pause(),mediaType.activePlaylistLoader=null)},startLoaders=(playlistLoader,mediaType)=>{mediaType.activePlaylistLoader=playlistLoader,playlistLoader.load()},onError={AUDIO:(type,settings)=>()=>{const{mediaTypes:{[type]:mediaType},excludePlaylist:excludePlaylist}=settings,activeTrack=mediaType.activeTrack(),activeGroup=mediaType.activeGroup(),id=(activeGroup.filter((group=>group.default))[0]||activeGroup[0]).id,defaultTrack=mediaType.tracks[id];if(activeTrack!==defaultTrack){videojs.log.warn("Problem encountered loading the alternate audio track.Switching back to default.");for(const trackId in mediaType.tracks)mediaType.tracks[trackId].enabled=mediaType.tracks[trackId]===defaultTrack;mediaType.onTrackChanged()}else excludePlaylist({error:{message:"Problem encountered loading the default audio track."}})},SUBTITLES:(type,settings)=>()=>{const{mediaTypes:{[type]:mediaType}}=settings;videojs.log.warn("Problem encountered loading the subtitle track.Disabling subtitle track.");const track=mediaType.activeTrack();track&&(track.mode="disabled"),mediaType.onTrackChanged()}},setupListeners={AUDIO:(type,playlistLoader,settings)=>{if(!playlistLoader)return;const{tech:tech,requestOptions:requestOptions,segmentLoaders:{[type]:segmentLoader}}=settings;playlistLoader.on("loadedmetadata",(()=>{const media=playlistLoader.media();segmentLoader.playlist(media,requestOptions),(!tech.paused()||media.endList&&"none"!==tech.preload())&&segmentLoader.load()})),playlistLoader.on("loadedplaylist",(()=>{segmentLoader.playlist(playlistLoader.media(),requestOptions),tech.paused()||segmentLoader.load()})),playlistLoader.on("error",onError[type](type,settings))},SUBTITLES:(type,playlistLoader,settings)=>{const{tech:tech,requestOptions:requestOptions,segmentLoaders:{[type]:segmentLoader},mediaTypes:{[type]:mediaType}}=settings;playlistLoader.on("loadedmetadata",(()=>{const media=playlistLoader.media();segmentLoader.playlist(media,requestOptions),segmentLoader.track(mediaType.activeTrack()),(!tech.paused()||media.endList&&"none"!==tech.preload())&&segmentLoader.load()})),playlistLoader.on("loadedplaylist",(()=>{segmentLoader.playlist(playlistLoader.media(),requestOptions),tech.paused()||segmentLoader.load()})),playlistLoader.on("error",onError[type](type,settings))}},initialize={AUDIO:(type,settings)=>{const{vhs:vhs,sourceType:sourceType,segmentLoaders:{[type]:segmentLoader},requestOptions:requestOptions,main:{mediaGroups:mediaGroups},mediaTypes:{[type]:{groups:groups,tracks:tracks,logger_:logger_}},mainPlaylistLoader:mainPlaylistLoader}=settings,audioOnlyMain=isAudioOnly(mainPlaylistLoader.main);mediaGroups[type]&&0!==Object.keys(mediaGroups[type]).length||(mediaGroups[type]={main:{default:{default:!0}}},audioOnlyMain&&(mediaGroups[type].main.default.playlists=mainPlaylistLoader.main.playlists));for(const groupId in mediaGroups[type]){groups[groupId]||(groups[groupId]=[]);for(const variantLabel in mediaGroups[type][groupId]){let playlistLoader,properties=mediaGroups[type][groupId][variantLabel];if(audioOnlyMain?(logger_("AUDIO group '".concat(groupId,"' label '").concat(variantLabel,"' is a main playlist")),properties.isMainPlaylist=!0,playlistLoader=null):playlistLoader="vhs-json"===sourceType&&properties.playlists?new PlaylistLoader(properties.playlists[0],vhs,requestOptions):properties.resolvedUri?new PlaylistLoader(properties.resolvedUri,vhs,requestOptions):properties.playlists&&"dash"===sourceType?new DashPlaylistLoader(properties.playlists[0],vhs,requestOptions,mainPlaylistLoader):null,properties=merge({id:variantLabel,playlistLoader:playlistLoader},properties),setupListeners[type](type,properties.playlistLoader,settings),groups[groupId].push(properties),void 0===tracks[variantLabel]){const track=new videojs.AudioTrack({id:variantLabel,kind:audioTrackKind_(properties),enabled:!1,language:properties.language,default:properties.default,label:variantLabel});tracks[variantLabel]=track}}}segmentLoader.on("error",onError[type](type,settings))},SUBTITLES:(type,settings)=>{const{tech:tech,vhs:vhs,sourceType:sourceType,segmentLoaders:{[type]:segmentLoader},requestOptions:requestOptions,main:{mediaGroups:mediaGroups},mediaTypes:{[type]:{groups:groups,tracks:tracks}},mainPlaylistLoader:mainPlaylistLoader}=settings;for(const groupId in mediaGroups[type]){groups[groupId]||(groups[groupId]=[]);for(const variantLabel in mediaGroups[type][groupId]){if(!vhs.options_.useForcedSubtitles&&mediaGroups[type][groupId][variantLabel].forced)continue;let playlistLoader,properties=mediaGroups[type][groupId][variantLabel];if("hls"===sourceType)playlistLoader=new PlaylistLoader(properties.resolvedUri,vhs,requestOptions);else if("dash"===sourceType){if(!properties.playlists.filter((p=>p.excludeUntil!==1/0)).length)return;playlistLoader=new DashPlaylistLoader(properties.playlists[0],vhs,requestOptions,mainPlaylistLoader)}else"vhs-json"===sourceType&&(playlistLoader=new PlaylistLoader(properties.playlists?properties.playlists[0]:properties.resolvedUri,vhs,requestOptions));if(properties=merge({id:variantLabel,playlistLoader:playlistLoader},properties),setupListeners[type](type,properties.playlistLoader,settings),groups[groupId].push(properties),void 0===tracks[variantLabel]){const track=tech.addRemoteTextTrack({id:variantLabel,kind:"subtitles",default:properties.default&&properties.autoselect,language:properties.language,label:variantLabel},!1).track;tracks[variantLabel]=track}}}segmentLoader.on("error",onError[type](type,settings))},"CLOSED-CAPTIONS":(type,settings)=>{const{tech:tech,main:{mediaGroups:mediaGroups},mediaTypes:{[type]:{groups:groups,tracks:tracks}}}=settings;for(const groupId in mediaGroups[type]){groups[groupId]||(groups[groupId]=[]);for(const variantLabel in mediaGroups[type][groupId]){const properties=mediaGroups[type][groupId][variantLabel];if(!/^(?:CC|SERVICE)/.test(properties.instreamId))continue;const captionServices=tech.options_.vhs&&tech.options_.vhs.captionServices||{};let newProps={label:variantLabel,language:properties.language,instreamId:properties.instreamId,default:properties.default&&properties.autoselect};if(captionServices[newProps.instreamId]&&(newProps=merge(newProps,captionServices[newProps.instreamId])),void 0===newProps.default&&delete newProps.default,groups[groupId].push(merge({id:variantLabel},properties)),void 0===tracks[variantLabel]){const track=tech.addRemoteTextTrack({id:newProps.instreamId,kind:"captions",default:newProps.default,language:newProps.language,label:newProps.label},!1).track;tracks[variantLabel]=track}}}}},groupMatch=(list,media)=>{for(let i=0;i<list.length;i++){if(playlistMatch(media,list[i]))return!0;if(list[i].playlists&&groupMatch(list[i].playlists,media))return!0}return!1},activeTrack={AUDIO:(type,settings)=>()=>{const{mediaTypes:{[type]:{tracks:tracks}}}=settings;for(const id in tracks)if(tracks[id].enabled)return tracks[id];return null},SUBTITLES:(type,settings)=>()=>{const{mediaTypes:{[type]:{tracks:tracks}}}=settings;for(const id in tracks)if("showing"===tracks[id].mode||"hidden"===tracks[id].mode)return tracks[id];return null}},setupMediaGroups=settings=>{["AUDIO","SUBTITLES","CLOSED-CAPTIONS"].forEach((type=>{initialize[type](type,settings)}));const{mediaTypes:mediaTypes,mainPlaylistLoader:mainPlaylistLoader,tech:tech,vhs:vhs,segmentLoaders:{AUDIO:audioSegmentLoader,main:mainSegmentLoader}}=settings;["AUDIO","SUBTITLES"].forEach((type=>{mediaTypes[type].activeGroup=((type,settings)=>track=>{const{mainPlaylistLoader:mainPlaylistLoader,mediaTypes:{[type]:{groups:groups}}}=settings,media=mainPlaylistLoader.media();if(!media)return null;let variants=null;media.attributes[type]&&(variants=groups[media.attributes[type]]);const groupKeys=Object.keys(groups);if(!variants)if("AUDIO"===type&&groupKeys.length>1&&isAudioOnly(settings.main))for(let i=0;i<groupKeys.length;i++){const groupPropertyList=groups[groupKeys[i]];if(groupMatch(groupPropertyList,media)){variants=groupPropertyList;break}}else groups.main?variants=groups.main:1===groupKeys.length&&(variants=groups[groupKeys[0]]);return void 0===track?variants:null!==track&&variants&&variants.filter((props=>props.id===track.id))[0]||null})(type,settings),mediaTypes[type].activeTrack=activeTrack[type](type,settings),mediaTypes[type].onGroupChanged=((type,settings)=>()=>{const{segmentLoaders:{[type]:segmentLoader,main:mainSegmentLoader},mediaTypes:{[type]:mediaType}}=settings,activeTrack=mediaType.activeTrack(),activeGroup=mediaType.getActiveGroup(),previousActiveLoader=mediaType.activePlaylistLoader,lastGroup=mediaType.lastGroup_;activeGroup&&lastGroup&&activeGroup.id===lastGroup.id||(mediaType.lastGroup_=activeGroup,mediaType.lastTrack_=activeTrack,stopLoaders(segmentLoader,mediaType),activeGroup&&!activeGroup.isMainPlaylist&&(activeGroup.playlistLoader?(segmentLoader.resyncLoader(),startLoaders(activeGroup.playlistLoader,mediaType)):previousActiveLoader&&mainSegmentLoader.resetEverything()))})(type,settings),mediaTypes[type].onGroupChanging=((type,settings)=>()=>{const{segmentLoaders:{[type]:segmentLoader},mediaTypes:{[type]:mediaType}}=settings;mediaType.lastGroup_=null,segmentLoader.abort(),segmentLoader.pause()})(type,settings),mediaTypes[type].onTrackChanged=((type,settings)=>()=>{const{mainPlaylistLoader:mainPlaylistLoader,segmentLoaders:{[type]:segmentLoader,main:mainSegmentLoader},mediaTypes:{[type]:mediaType}}=settings,activeTrack=mediaType.activeTrack(),activeGroup=mediaType.getActiveGroup(),previousActiveLoader=mediaType.activePlaylistLoader,lastTrack=mediaType.lastTrack_;if((!lastTrack||!activeTrack||lastTrack.id!==activeTrack.id)&&(mediaType.lastGroup_=activeGroup,mediaType.lastTrack_=activeTrack,stopLoaders(segmentLoader,mediaType),activeGroup)){if(activeGroup.isMainPlaylist){if(!activeTrack||!lastTrack||activeTrack.id===lastTrack.id)return;const pc=settings.vhs.playlistController_,newPlaylist=pc.selectPlaylist();if(pc.media()===newPlaylist)return;return mediaType.logger_("track change. Switching main audio from ".concat(lastTrack.id," to ").concat(activeTrack.id)),mainPlaylistLoader.pause(),mainSegmentLoader.resetEverything(),void pc.fastQualityChange_(newPlaylist)}if("AUDIO"===type){if(!activeGroup.playlistLoader)return mainSegmentLoader.setAudio(!0),void mainSegmentLoader.resetEverything();segmentLoader.setAudio(!0),mainSegmentLoader.setAudio(!1)}previousActiveLoader!==activeGroup.playlistLoader?(segmentLoader.track&&segmentLoader.track(activeTrack),segmentLoader.resetEverything(),startLoaders(activeGroup.playlistLoader,mediaType)):startLoaders(activeGroup.playlistLoader,mediaType)}})(type,settings),mediaTypes[type].getActiveGroup=((type,_ref80)=>{let{mediaTypes:mediaTypes}=_ref80;return()=>{const activeTrack_=mediaTypes[type].activeTrack();return activeTrack_?mediaTypes[type].activeGroup(activeTrack_):null}})(type,settings)}));const audioGroup=mediaTypes.AUDIO.activeGroup();if(audioGroup){const groupId=(audioGroup.filter((group=>group.default))[0]||audioGroup[0]).id;mediaTypes.AUDIO.tracks[groupId].enabled=!0,mediaTypes.AUDIO.onGroupChanged(),mediaTypes.AUDIO.onTrackChanged();mediaTypes.AUDIO.getActiveGroup().playlistLoader?(mainSegmentLoader.setAudio(!1),audioSegmentLoader.setAudio(!0)):mainSegmentLoader.setAudio(!0)}mainPlaylistLoader.on("mediachange",(()=>{["AUDIO","SUBTITLES"].forEach((type=>mediaTypes[type].onGroupChanged()))})),mainPlaylistLoader.on("mediachanging",(()=>{["AUDIO","SUBTITLES"].forEach((type=>mediaTypes[type].onGroupChanging()))}));const onAudioTrackChanged=()=>{mediaTypes.AUDIO.onTrackChanged(),tech.trigger({type:"usage",name:"vhs-audio-change"})};tech.audioTracks().addEventListener("change",onAudioTrackChanged),tech.remoteTextTracks().addEventListener("change",mediaTypes.SUBTITLES.onTrackChanged),vhs.on("dispose",(()=>{tech.audioTracks().removeEventListener("change",onAudioTrackChanged),tech.remoteTextTracks().removeEventListener("change",mediaTypes.SUBTITLES.onTrackChanged)})),tech.clearTracks("audio");for(const id in mediaTypes.AUDIO.tracks)tech.audioTracks().addTrack(mediaTypes.AUDIO.tracks[id])};class SteeringManifest{constructor(){this.priority_=[],this.pathwayClones_=new Map}set version(number){1===number&&(this.version_=number)}set ttl(seconds){this.ttl_=seconds||300}set reloadUri(uri){uri&&(this.reloadUri_=resolveUrl(this.reloadUri_,uri))}set priority(array){array&&array.length&&(this.priority_=array)}set pathwayClones(array){array&&array.length&&(this.pathwayClones_=new Map(array.map((clone=>[clone.ID,clone]))))}get version(){return this.version_}get ttl(){return this.ttl_}get reloadUri(){return this.reloadUri_}get priority(){return this.priority_}get pathwayClones(){return this.pathwayClones_}}class ContentSteeringController extends videojs.EventTarget{constructor(xhr,bandwidth){super(),this.currentPathway=null,this.defaultPathway=null,this.queryBeforeStart=!1,this.availablePathways_=new Set,this.steeringManifest=new SteeringManifest,this.proxyServerUrl_=null,this.manifestType_=null,this.ttlTimeout_=null,this.request_=null,this.currentPathwayClones=new Map,this.nextPathwayClones=new Map,this.excludedSteeringManifestURLs=new Set,this.logger_=logger("Content Steering"),this.xhr_=xhr,this.getBandwidth_=bandwidth}assignTagProperties(baseUrl,steeringTag){this.manifestType_=steeringTag.serverUri?"HLS":"DASH";const steeringUri=steeringTag.serverUri||steeringTag.serverURL;if(!steeringUri)return this.logger_("steering manifest URL is ".concat(steeringUri,", cannot request steering manifest.")),void this.trigger("error");steeringUri.startsWith("data:")?this.decodeDataUriManifest_(steeringUri.substring(steeringUri.indexOf(",")+1)):(this.steeringManifest.reloadUri=resolveUrl(baseUrl,steeringUri),this.defaultPathway=steeringTag.pathwayId||steeringTag.defaultServiceLocation,this.queryBeforeStart=steeringTag.queryBeforeStart,this.proxyServerUrl_=steeringTag.proxyServerURL,this.defaultPathway&&!this.queryBeforeStart&&this.trigger("content-steering"))}requestSteeringManifest(initial){const reloadUri=this.steeringManifest.reloadUri;if(!reloadUri)return;const uri=initial?reloadUri:this.getRequestURI(reloadUri);if(!uri)return this.logger_("No valid content steering manifest URIs. Stopping content steering."),this.trigger("error"),void this.dispose();this.request_=this.xhr_({uri:uri},((error,errorInfo)=>{if(error){if(410===errorInfo.status)return this.logger_("manifest request 410 ".concat(error,".")),this.logger_("There will be no more content steering requests to ".concat(uri," this session.")),void this.excludedSteeringManifestURLs.add(uri);if(429===errorInfo.status){const retrySeconds=errorInfo.responseHeaders["retry-after"];return this.logger_("manifest request 429 ".concat(error,".")),this.logger_("content steering will retry in ".concat(retrySeconds," seconds.")),void this.startTTLTimeout_(parseInt(retrySeconds,10))}return this.logger_("manifest failed to load ".concat(error,".")),void this.startTTLTimeout_()}const steeringManifestJson=JSON.parse(this.request_.responseText);this.assignSteeringProperties_(steeringManifestJson),this.startTTLTimeout_()}))}setProxyServerUrl_(steeringUrl){const steeringUrlObject=new window.URL(steeringUrl),proxyServerUrlObject=new window.URL(this.proxyServerUrl_);return proxyServerUrlObject.searchParams.set("url",encodeURI(steeringUrlObject.toString())),this.setSteeringParams_(proxyServerUrlObject.toString())}decodeDataUriManifest_(dataUri){const steeringManifestJson=JSON.parse(window.atob(dataUri));this.assignSteeringProperties_(steeringManifestJson)}setSteeringParams_(url){const urlObject=new window.URL(url),path=this.getPathway(),networkThroughput=this.getBandwidth_();if(path){const pathwayKey="_".concat(this.manifestType_,"_pathway");urlObject.searchParams.set(pathwayKey,path)}if(networkThroughput){const throughputKey="_".concat(this.manifestType_,"_throughput");urlObject.searchParams.set(throughputKey,networkThroughput)}return urlObject.toString()}assignSteeringProperties_(steeringJson){if(this.steeringManifest.version=steeringJson.VERSION,!this.steeringManifest.version)return this.logger_("manifest version is ".concat(steeringJson.VERSION,", which is not supported.")),void this.trigger("error");this.steeringManifest.ttl=steeringJson.TTL,this.steeringManifest.reloadUri=steeringJson["RELOAD-URI"],this.steeringManifest.priority=steeringJson["PATHWAY-PRIORITY"]||steeringJson["SERVICE-LOCATION-PRIORITY"],this.steeringManifest.pathwayClones=steeringJson["PATHWAY-CLONES"],this.nextPathwayClones=this.steeringManifest.pathwayClones,this.availablePathways_.size||(this.logger_("There are no available pathways for content steering. Ending content steering."),this.trigger("error"),this.dispose());const nextPathway=(pathwaysByPriority=>{for(const path of pathwaysByPriority)if(this.availablePathways_.has(path))return path;return[...this.availablePathways_][0]})(this.steeringManifest.priority);this.currentPathway!==nextPathway&&(this.currentPathway=nextPathway,this.trigger("content-steering"))}getPathway(){return this.currentPathway||this.defaultPathway}getRequestURI(reloadUri){if(!reloadUri)return null;const isExcluded=uri=>this.excludedSteeringManifestURLs.has(uri);if(this.proxyServerUrl_){const proxyURI=this.setProxyServerUrl_(reloadUri);if(!isExcluded(proxyURI))return proxyURI}const steeringURI=this.setSteeringParams_(reloadUri);return isExcluded(steeringURI)?null:steeringURI}startTTLTimeout_(){const ttlMS=1e3*(arguments.length>0&&void 0!==arguments[0]?arguments[0]:this.steeringManifest.ttl);this.ttlTimeout_=window.setTimeout((()=>{this.requestSteeringManifest()}),ttlMS)}clearTTLTimeout_(){window.clearTimeout(this.ttlTimeout_),this.ttlTimeout_=null}abort(){this.request_&&this.request_.abort(),this.request_=null}dispose(){this.off("content-steering"),this.off("error"),this.abort(),this.clearTTLTimeout_(),this.currentPathway=null,this.defaultPathway=null,this.queryBeforeStart=null,this.proxyServerUrl_=null,this.manifestType_=null,this.ttlTimeout_=null,this.request_=null,this.excludedSteeringManifestURLs=new Set,this.availablePathways_=new Set,this.steeringManifest=new SteeringManifest}addAvailablePathway(pathway){pathway&&this.availablePathways_.add(pathway)}clearAvailablePathways(){this.availablePathways_.clear()}excludePathway(pathway){return this.availablePathways_.delete(pathway)}didDASHTagChange(baseURL,newTag){return!newTag&&this.steeringManifest.reloadUri||newTag&&(resolveUrl(baseURL,newTag.serverURL)!==this.steeringManifest.reloadUri||newTag.defaultServiceLocation!==this.defaultPathway||newTag.queryBeforeStart!==this.queryBeforeStart||newTag.proxyServerURL!==this.proxyServerUrl_)}getAvailablePathways(){return this.availablePathways_}}let Vhs$1;const loaderStats=["mediaRequests","mediaRequestsAborted","mediaRequestsTimedout","mediaRequestsErrored","mediaTransferDuration","mediaBytesTransferred","mediaAppends"],sumLoaderStat=function(stat){return this.audioSegmentLoader_[stat]+this.mainSegmentLoader_[stat]};class PlaylistController extends videojs.EventTarget{constructor(options){super();const{src:src,withCredentials:withCredentials,tech:tech,bandwidth:bandwidth,externVhs:externVhs,useCueTags:useCueTags,playlistExclusionDuration:playlistExclusionDuration,enableLowInitialPlaylist:enableLowInitialPlaylist,sourceType:sourceType,cacheEncryptionKeys:cacheEncryptionKeys,bufferBasedABR:bufferBasedABR,leastPixelDiffSelector:leastPixelDiffSelector,captionServices:captionServices}=options;if(!src)throw new Error("A non-empty playlist URL or JSON manifest string is required");let{maxPlaylistRetries:maxPlaylistRetries}=options;null==maxPlaylistRetries&&(maxPlaylistRetries=1/0),Vhs$1=externVhs,this.bufferBasedABR=Boolean(bufferBasedABR),this.leastPixelDiffSelector=Boolean(leastPixelDiffSelector),this.withCredentials=withCredentials,this.tech_=tech,this.vhs_=tech.vhs,this.sourceType_=sourceType,this.useCueTags_=useCueTags,this.playlistExclusionDuration=playlistExclusionDuration,this.maxPlaylistRetries=maxPlaylistRetries,this.enableLowInitialPlaylist=enableLowInitialPlaylist,this.useCueTags_&&(this.cueTagsTrack_=this.tech_.addTextTrack("metadata","ad-cues"),this.cueTagsTrack_.inBandMetadataTrackDispatchType=""),this.requestOptions_={withCredentials:withCredentials,maxPlaylistRetries:maxPlaylistRetries,timeout:null},this.on("error",this.pauseLoading),this.mediaTypes_=(()=>{const mediaTypes={};return["AUDIO","SUBTITLES","CLOSED-CAPTIONS"].forEach((type=>{mediaTypes[type]={groups:{},tracks:{},activePlaylistLoader:null,activeGroup:noop,activeTrack:noop,getActiveGroup:noop,onGroupChanged:noop,onTrackChanged:noop,lastTrack_:null,logger_:logger("MediaGroups[".concat(type,"]"))}})),mediaTypes})(),this.mediaSource=new window.MediaSource,this.handleDurationChange_=this.handleDurationChange_.bind(this),this.handleSourceOpen_=this.handleSourceOpen_.bind(this),this.handleSourceEnded_=this.handleSourceEnded_.bind(this),this.mediaSource.addEventListener("durationchange",this.handleDurationChange_),this.mediaSource.addEventListener("sourceopen",this.handleSourceOpen_),this.mediaSource.addEventListener("sourceended",this.handleSourceEnded_),this.seekable_=createTimeRanges(),this.hasPlayed_=!1,this.syncController_=new SyncController(options),this.segmentMetadataTrack_=tech.addRemoteTextTrack({kind:"metadata",label:"segment-metadata"},!1).track,this.decrypter_=new Decrypter,this.sourceUpdater_=new SourceUpdater(this.mediaSource),this.inbandTextTracks_={},this.timelineChangeController_=new TimelineChangeController,this.keyStatusMap_=new Map;const segmentLoaderSettings={vhs:this.vhs_,parse708captions:options.parse708captions,useDtsForTimestampOffset:options.useDtsForTimestampOffset,captionServices:captionServices,mediaSource:this.mediaSource,currentTime:this.tech_.currentTime.bind(this.tech_),seekable:()=>this.seekable(),seeking:()=>this.tech_.seeking(),duration:()=>this.duration(),hasPlayed:()=>this.hasPlayed_,goalBufferLength:()=>this.goalBufferLength(),bandwidth:bandwidth,syncController:this.syncController_,decrypter:this.decrypter_,sourceType:this.sourceType_,inbandTextTracks:this.inbandTextTracks_,cacheEncryptionKeys:cacheEncryptionKeys,sourceUpdater:this.sourceUpdater_,timelineChangeController:this.timelineChangeController_,exactManifestTimings:options.exactManifestTimings,addMetadataToTextTrack:this.addMetadataToTextTrack.bind(this)};this.mainPlaylistLoader_="dash"===this.sourceType_?new DashPlaylistLoader(src,this.vhs_,merge(this.requestOptions_,{addMetadataToTextTrack:this.addMetadataToTextTrack.bind(this)})):new PlaylistLoader(src,this.vhs_,merge(this.requestOptions_,{addDateRangesToTextTrack:this.addDateRangesToTextTrack_.bind(this)})),this.setupMainPlaylistLoaderListeners_(),this.mainSegmentLoader_=new SegmentLoader(merge(segmentLoaderSettings,{segmentMetadataTrack:this.segmentMetadataTrack_,loaderType:"main"}),options),this.audioSegmentLoader_=new SegmentLoader(merge(segmentLoaderSettings,{loaderType:"audio"}),options),this.subtitleSegmentLoader_=new VTTSegmentLoader(merge(segmentLoaderSettings,{loaderType:"vtt",featuresNativeTextTracks:this.tech_.featuresNativeTextTracks,loadVttJs:()=>new Promise(((resolve,reject)=>{function onLoad(){tech.off("vttjserror",onError),resolve()}function onError(){tech.off("vttjsloaded",onLoad),reject()}tech.one("vttjsloaded",onLoad),tech.one("vttjserror",onError),tech.addWebVttScript_()}))}),options);this.contentSteeringController_=new ContentSteeringController(this.vhs_.xhr,(()=>this.mainSegmentLoader_.bandwidth)),this.setupSegmentLoaderListeners_(),this.bufferBasedABR&&(this.mainPlaylistLoader_.one("loadedplaylist",(()=>this.startABRTimer_())),this.tech_.on("pause",(()=>this.stopABRTimer_())),this.tech_.on("play",(()=>this.startABRTimer_()))),loaderStats.forEach((stat=>{this[stat+"_"]=sumLoaderStat.bind(this,stat)})),this.logger_=logger("pc"),this.triggeredFmp4Usage=!1,"none"===this.tech_.preload()?(this.loadOnPlay_=()=>{this.loadOnPlay_=null,this.mainPlaylistLoader_.load()},this.tech_.one("play",this.loadOnPlay_)):this.mainPlaylistLoader_.load(),this.timeToLoadedData__=-1,this.mainAppendsToLoadedData__=-1,this.audioAppendsToLoadedData__=-1;const event="none"===this.tech_.preload()?"play":"loadstart";this.tech_.one(event,(()=>{const timeToLoadedDataStart=Date.now();this.tech_.one("loadeddata",(()=>{this.timeToLoadedData__=Date.now()-timeToLoadedDataStart,this.mainAppendsToLoadedData__=this.mainSegmentLoader_.mediaAppends,this.audioAppendsToLoadedData__=this.audioSegmentLoader_.mediaAppends}))}))}mainAppendsToLoadedData_(){return this.mainAppendsToLoadedData__}audioAppendsToLoadedData_(){return this.audioAppendsToLoadedData__}appendsToLoadedData_(){const main=this.mainAppendsToLoadedData_(),audio=this.audioAppendsToLoadedData_();return-1===main||-1===audio?-1:main+audio}timeToLoadedData_(){return this.timeToLoadedData__}checkABR_(){let reason=arguments.length>0&&void 0!==arguments[0]?arguments[0]:"abr";const nextPlaylist=this.selectPlaylist();nextPlaylist&&this.shouldSwitchToMedia_(nextPlaylist)&&this.switchMedia_(nextPlaylist,reason)}switchMedia_(playlist,cause,delay){const oldMedia=this.media(),oldId=oldMedia&&(oldMedia.id||oldMedia.uri),newId=playlist&&(playlist.id||playlist.uri);oldId&&oldId!==newId&&(this.logger_("switch media ".concat(oldId," -> ").concat(newId," from ").concat(cause)),this.tech_.trigger({type:"usage",name:"vhs-rendition-change-".concat(cause)})),this.mainPlaylistLoader_.media(playlist,delay)}switchMediaForDASHContentSteering_(){["AUDIO","SUBTITLES","CLOSED-CAPTIONS"].forEach((type=>{const mediaType=this.mediaTypes_[type],activeGroup=mediaType?mediaType.activeGroup():null,pathway=this.contentSteeringController_.getPathway();if(activeGroup&&pathway){const dashMediaPlaylists=(activeGroup.length?activeGroup[0].playlists:activeGroup.playlists).filter((p=>p.attributes.serviceLocation===pathway));dashMediaPlaylists.length&&this.mediaTypes_[type].activePlaylistLoader.media(dashMediaPlaylists[0])}}))}startABRTimer_(){this.stopABRTimer_(),this.abrTimer_=window.setInterval((()=>this.checkABR_()),250)}stopABRTimer_(){this.tech_.scrubbing&&this.tech_.scrubbing()||(window.clearInterval(this.abrTimer_),this.abrTimer_=null)}getAudioTrackPlaylists_(){const main=this.main(),defaultPlaylists=main&&main.playlists||[];if(!main||!main.mediaGroups||!main.mediaGroups.AUDIO)return defaultPlaylists;const AUDIO=main.mediaGroups.AUDIO,groupKeys=Object.keys(AUDIO);let track;if(Object.keys(this.mediaTypes_.AUDIO.groups).length)track=this.mediaTypes_.AUDIO.activeTrack();else{const defaultGroup=AUDIO.main||groupKeys.length&&AUDIO[groupKeys[0]];for(const label in defaultGroup)if(defaultGroup[label].default){track={label:label};break}}if(!track)return defaultPlaylists;const playlists=[];for(const group in AUDIO)if(AUDIO[group][track.label]){const properties=AUDIO[group][track.label];if(properties.playlists&&properties.playlists.length)playlists.push.apply(playlists,properties.playlists);else if(properties.uri)playlists.push(properties);else if(main.playlists.length)for(let i=0;i<main.playlists.length;i++){const playlist=main.playlists[i];playlist.attributes&&playlist.attributes.AUDIO&&playlist.attributes.AUDIO===group&&playlists.push(playlist)}}return playlists.length?playlists:defaultPlaylists}setupMainPlaylistLoaderListeners_(){this.mainPlaylistLoader_.on("loadedmetadata",(()=>{const media=this.mainPlaylistLoader_.media(),requestTimeout=1.5*media.targetDuration*1e3;isLowestEnabledRendition(this.mainPlaylistLoader_.main,this.mainPlaylistLoader_.media())?this.requestOptions_.timeout=0:this.requestOptions_.timeout=requestTimeout,media.endList&&"none"!==this.tech_.preload()&&(this.mainSegmentLoader_.playlist(media,this.requestOptions_),this.mainSegmentLoader_.load()),setupMediaGroups({sourceType:this.sourceType_,segmentLoaders:{AUDIO:this.audioSegmentLoader_,SUBTITLES:this.subtitleSegmentLoader_,main:this.mainSegmentLoader_},tech:this.tech_,requestOptions:this.requestOptions_,mainPlaylistLoader:this.mainPlaylistLoader_,vhs:this.vhs_,main:this.main(),mediaTypes:this.mediaTypes_,excludePlaylist:this.excludePlaylist.bind(this)}),this.triggerPresenceUsage_(this.main(),media),this.setupFirstPlay(),!this.mediaTypes_.AUDIO.activePlaylistLoader||this.mediaTypes_.AUDIO.activePlaylistLoader.media()?this.trigger("selectedinitialmedia"):this.mediaTypes_.AUDIO.activePlaylistLoader.one("loadedmetadata",(()=>{this.trigger("selectedinitialmedia")}))})),this.mainPlaylistLoader_.on("loadedplaylist",(()=>{this.loadOnPlay_&&this.tech_.off("play",this.loadOnPlay_);let updatedPlaylist=this.mainPlaylistLoader_.media();if(!updatedPlaylist){let selectedMedia;if(this.attachContentSteeringListeners_(),this.initContentSteeringController_(),this.excludeUnsupportedVariants_(),this.enableLowInitialPlaylist&&(selectedMedia=this.selectInitialPlaylist()),selectedMedia||(selectedMedia=this.selectPlaylist()),!selectedMedia||!this.shouldSwitchToMedia_(selectedMedia))return;this.initialMedia_=selectedMedia,this.switchMedia_(this.initialMedia_,"initial");if(!("vhs-json"===this.sourceType_&&this.initialMedia_.segments))return;updatedPlaylist=this.initialMedia_}this.handleUpdatedMediaPlaylist(updatedPlaylist)})),this.mainPlaylistLoader_.on("error",(()=>{const error=this.mainPlaylistLoader_.error;this.excludePlaylist({playlistToExclude:error.playlist,error:error})})),this.mainPlaylistLoader_.on("mediachanging",(()=>{this.mainSegmentLoader_.abort(),this.mainSegmentLoader_.pause()})),this.mainPlaylistLoader_.on("mediachange",(()=>{const media=this.mainPlaylistLoader_.media(),requestTimeout=1.5*media.targetDuration*1e3;isLowestEnabledRendition(this.mainPlaylistLoader_.main,this.mainPlaylistLoader_.media())?this.requestOptions_.timeout=0:this.requestOptions_.timeout=requestTimeout,"dash"===this.sourceType_&&this.mainPlaylistLoader_.load(),this.mainSegmentLoader_.pause(),this.mainSegmentLoader_.playlist(media,this.requestOptions_),this.waitingForFastQualityPlaylistReceived_?this.runFastQualitySwitch_():this.mainSegmentLoader_.load(),this.tech_.trigger({type:"mediachange",bubbles:!0})})),this.mainPlaylistLoader_.on("playlistunchanged",(()=>{const updatedPlaylist=this.mainPlaylistLoader_.media();if("playlist-unchanged"===updatedPlaylist.lastExcludeReason_)return;this.stuckAtPlaylistEnd_(updatedPlaylist)&&(this.excludePlaylist({error:{message:"Playlist no longer updating.",reason:"playlist-unchanged"}}),this.tech_.trigger("playliststuck"))})),this.mainPlaylistLoader_.on("renditiondisabled",(()=>{this.tech_.trigger({type:"usage",name:"vhs-rendition-disabled"})})),this.mainPlaylistLoader_.on("renditionenabled",(()=>{this.tech_.trigger({type:"usage",name:"vhs-rendition-enabled"})}))}handleUpdatedMediaPlaylist(updatedPlaylist){this.useCueTags_&&this.updateAdCues_(updatedPlaylist),this.mainSegmentLoader_.pause(),this.mainSegmentLoader_.playlist(updatedPlaylist,this.requestOptions_),this.waitingForFastQualityPlaylistReceived_&&this.runFastQualitySwitch_(),this.updateDuration(!updatedPlaylist.endList),this.tech_.paused()||(this.mainSegmentLoader_.load(),this.audioSegmentLoader_&&this.audioSegmentLoader_.load())}triggerPresenceUsage_(main,media){const mediaGroups=main.mediaGroups||{};let defaultDemuxed=!0;const audioGroupKeys=Object.keys(mediaGroups.AUDIO);for(const mediaGroup in mediaGroups.AUDIO)for(const label in mediaGroups.AUDIO[mediaGroup]){mediaGroups.AUDIO[mediaGroup][label].uri||(defaultDemuxed=!1)}defaultDemuxed&&this.tech_.trigger({type:"usage",name:"vhs-demuxed"}),Object.keys(mediaGroups.SUBTITLES).length&&this.tech_.trigger({type:"usage",name:"vhs-webvtt"}),Vhs$1.Playlist.isAes(media)&&this.tech_.trigger({type:"usage",name:"vhs-aes"}),audioGroupKeys.length&&Object.keys(mediaGroups.AUDIO[audioGroupKeys[0]]).length>1&&this.tech_.trigger({type:"usage",name:"vhs-alternate-audio"}),this.useCueTags_&&this.tech_.trigger({type:"usage",name:"vhs-playlist-cue-tags"})}shouldSwitchToMedia_(nextPlaylist){const currentPlaylist=this.mainPlaylistLoader_.media()||this.mainPlaylistLoader_.pendingMedia_,currentTime=this.tech_.currentTime(),bufferLowWaterLine=this.bufferLowWaterLine(),bufferHighWaterLine=this.bufferHighWaterLine();return function(_ref81){let{currentPlaylist:currentPlaylist,buffered:buffered,currentTime:currentTime,nextPlaylist:nextPlaylist,bufferLowWaterLine:bufferLowWaterLine,bufferHighWaterLine:bufferHighWaterLine,duration:duration,bufferBasedABR:bufferBasedABR,log:log}=_ref81;if(!nextPlaylist)return videojs.log.warn("We received no playlist to switch to. Please check your stream."),!1;const sharedLogLine="allowing switch ".concat(currentPlaylist&&currentPlaylist.id||"null"," -> ").concat(nextPlaylist.id);if(!currentPlaylist)return log("".concat(sharedLogLine," as current playlist is not set")),!0;if(nextPlaylist.id===currentPlaylist.id)return!1;const isBuffered=Boolean(findRange(buffered,currentTime).length);if(!currentPlaylist.endList)return isBuffered||"number"!=typeof currentPlaylist.partTargetDuration?(log("".concat(sharedLogLine," as current playlist is live")),!0):(log("not ".concat(sharedLogLine," as current playlist is live llhls, but currentTime isn't in buffered.")),!1);const forwardBuffer=timeAheadOf(buffered,currentTime),maxBufferLowWaterLine=bufferBasedABR?Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE:Config.MAX_BUFFER_LOW_WATER_LINE;if(duration<maxBufferLowWaterLine)return log("".concat(sharedLogLine," as duration < max low water line (").concat(duration," < ").concat(maxBufferLowWaterLine,")")),!0;const nextBandwidth=nextPlaylist.attributes.BANDWIDTH,currBandwidth=currentPlaylist.attributes.BANDWIDTH;if(nextBandwidth<currBandwidth&&(!bufferBasedABR||forwardBuffer<bufferHighWaterLine)){let logLine="".concat(sharedLogLine," as next bandwidth < current bandwidth (").concat(nextBandwidth," < ").concat(currBandwidth,")");return bufferBasedABR&&(logLine+=" and forwardBuffer < bufferHighWaterLine (".concat(forwardBuffer," < ").concat(bufferHighWaterLine,")")),log(logLine),!0}if((!bufferBasedABR||nextBandwidth>currBandwidth)&&forwardBuffer>=bufferLowWaterLine){let logLine="".concat(sharedLogLine," as forwardBuffer >= bufferLowWaterLine (").concat(forwardBuffer," >= ").concat(bufferLowWaterLine,")");return bufferBasedABR&&(logLine+=" and next bandwidth > current bandwidth (".concat(nextBandwidth," > ").concat(currBandwidth,")")),log(logLine),!0}return log("not ".concat(sharedLogLine," as no switching criteria met")),!1}({buffered:this.tech_.buffered(),currentTime:currentTime,currentPlaylist:currentPlaylist,nextPlaylist:nextPlaylist,bufferLowWaterLine:bufferLowWaterLine,bufferHighWaterLine:bufferHighWaterLine,duration:this.duration(),bufferBasedABR:this.bufferBasedABR,log:this.logger_})}setupSegmentLoaderListeners_(){this.mainSegmentLoader_.on("bandwidthupdate",(()=>{this.checkABR_("bandwidthupdate"),this.tech_.trigger("bandwidthupdate")})),this.mainSegmentLoader_.on("timeout",(()=>{this.bufferBasedABR&&this.mainSegmentLoader_.load()})),this.bufferBasedABR||this.mainSegmentLoader_.on("progress",(()=>{this.trigger("progress")})),this.mainSegmentLoader_.on("error",(()=>{const error=this.mainSegmentLoader_.error();this.excludePlaylist({playlistToExclude:error.playlist,error:error})})),this.mainSegmentLoader_.on("appenderror",(()=>{this.error=this.mainSegmentLoader_.error_,this.trigger("error")})),this.mainSegmentLoader_.on("syncinfoupdate",(()=>{this.onSyncInfoUpdate_()})),this.mainSegmentLoader_.on("timestampoffset",(()=>{this.tech_.trigger({type:"usage",name:"vhs-timestamp-offset"})})),this.audioSegmentLoader_.on("syncinfoupdate",(()=>{this.onSyncInfoUpdate_()})),this.audioSegmentLoader_.on("appenderror",(()=>{this.error=this.audioSegmentLoader_.error_,this.trigger("error")})),this.mainSegmentLoader_.on("ended",(()=>{this.logger_("main segment loader ended"),this.onEndOfStream()})),this.mainSegmentLoader_.on("earlyabort",(event=>{this.bufferBasedABR||(this.delegateLoaders_("all",["abort"]),this.excludePlaylist({error:{message:"Aborted early because there isn't enough bandwidth to complete the request without rebuffering."},playlistExclusionDuration:10}))}));const updateCodecs=()=>{if(!this.sourceUpdater_.hasCreatedSourceBuffers())return this.tryToCreateSourceBuffers_();const codecs=this.getCodecsOrExclude_();codecs&&this.sourceUpdater_.addOrChangeSourceBuffers(codecs)};this.mainSegmentLoader_.on("trackinfo",updateCodecs),this.audioSegmentLoader_.on("trackinfo",updateCodecs),this.mainSegmentLoader_.on("fmp4",(()=>{this.triggeredFmp4Usage||(this.tech_.trigger({type:"usage",name:"vhs-fmp4"}),this.triggeredFmp4Usage=!0)})),this.audioSegmentLoader_.on("fmp4",(()=>{this.triggeredFmp4Usage||(this.tech_.trigger({type:"usage",name:"vhs-fmp4"}),this.triggeredFmp4Usage=!0)})),this.audioSegmentLoader_.on("ended",(()=>{this.logger_("audioSegmentLoader ended"),this.onEndOfStream()}))}mediaSecondsLoaded_(){return Math.max(this.audioSegmentLoader_.mediaSecondsLoaded+this.mainSegmentLoader_.mediaSecondsLoaded)}load(){this.mainSegmentLoader_.load(),this.mediaTypes_.AUDIO.activePlaylistLoader&&this.audioSegmentLoader_.load(),this.mediaTypes_.SUBTITLES.activePlaylistLoader&&this.subtitleSegmentLoader_.load()}fastQualityChange_(){let media=arguments.length>0&&void 0!==arguments[0]?arguments[0]:this.selectPlaylist();media&&media===this.mainPlaylistLoader_.media()?this.logger_("skipping fastQualityChange because new media is same as old"):(this.switchMedia_(media,"fast-quality"),this.waitingForFastQualityPlaylistReceived_=!0)}runFastQualitySwitch_(){this.waitingForFastQualityPlaylistReceived_=!1,this.mainSegmentLoader_.pause(),this.mainSegmentLoader_.resetEverything((()=>{this.tech_.setCurrentTime(this.tech_.currentTime())}))}play(){if(this.setupFirstPlay())return;this.tech_.ended()&&this.tech_.setCurrentTime(0),this.hasPlayed_&&this.load();const seekable=this.tech_.seekable();return this.tech_.duration()===1/0&&this.tech_.currentTime()<seekable.start(0)?this.tech_.setCurrentTime(seekable.end(seekable.length-1)):void 0}setupFirstPlay(){const media=this.mainPlaylistLoader_.media();if(!media||this.tech_.paused()||this.hasPlayed_)return!1;if(!media.endList||media.start){const seekable=this.seekable();if(!seekable.length)return!1;const seekableEnd=seekable.end(0);let startPoint=seekableEnd;if(media.start){const offset=media.start.timeOffset;startPoint=offset<0?Math.max(seekableEnd+offset,seekable.start(0)):Math.min(seekableEnd,offset)}this.trigger("firstplay"),this.tech_.setCurrentTime(startPoint)}return this.hasPlayed_=!0,this.load(),!0}handleSourceOpen_(){if(this.tryToCreateSourceBuffers_(),this.tech_.autoplay()){const playPromise=this.tech_.play();void 0!==playPromise&&"function"==typeof playPromise.then&&playPromise.then(null,(e=>{}))}this.trigger("sourceopen")}handleSourceEnded_(){if(!this.inbandTextTracks_.metadataTrack_)return;const cues=this.inbandTextTracks_.metadataTrack_.cues;if(!cues||!cues.length)return;const duration=this.duration();cues[cues.length-1].endTime=isNaN(duration)||Math.abs(duration)===1/0?Number.MAX_VALUE:duration}handleDurationChange_(){this.tech_.trigger("durationchange")}onEndOfStream(){let isEndOfStream=this.mainSegmentLoader_.ended_;if(this.mediaTypes_.AUDIO.activePlaylistLoader){const mainMediaInfo=this.mainSegmentLoader_.getCurrentMediaInfo_();isEndOfStream=!mainMediaInfo||mainMediaInfo.hasVideo?isEndOfStream&&this.audioSegmentLoader_.ended_:this.audioSegmentLoader_.ended_}isEndOfStream&&(this.stopABRTimer_(),this.sourceUpdater_.endOfStream())}stuckAtPlaylistEnd_(playlist){if(!this.seekable().length)return!1;const expired=this.syncController_.getExpiredTime(playlist,this.duration());if(null===expired)return!1;const absolutePlaylistEnd=Vhs$1.Playlist.playlistEnd(playlist,expired),currentTime=this.tech_.currentTime(),buffered=this.tech_.buffered();if(!buffered.length)return absolutePlaylistEnd-currentTime<=.1;const bufferedEnd=buffered.end(buffered.length-1);return bufferedEnd-currentTime<=.1&&absolutePlaylistEnd-bufferedEnd<=.1}excludePlaylist(_ref82){let{playlistToExclude:playlistToExclude=this.mainPlaylistLoader_.media(),error:error={},playlistExclusionDuration:playlistExclusionDuration}=_ref82;if(playlistToExclude=playlistToExclude||this.mainPlaylistLoader_.media(),playlistExclusionDuration=playlistExclusionDuration||error.playlistExclusionDuration||this.playlistExclusionDuration,!playlistToExclude)return this.error=error,void("open"!==this.mediaSource.readyState?this.trigger("error"):this.sourceUpdater_.endOfStream("network"));playlistToExclude.playlistErrors_++;const playlists=this.mainPlaylistLoader_.main.playlists,enabledPlaylists=playlists.filter(isEnabled),isFinalRendition=1===enabledPlaylists.length&&enabledPlaylists[0]===playlistToExclude;if(1===playlists.length&&playlistExclusionDuration!==1/0)return videojs.log.warn("Problem encountered with playlist ".concat(playlistToExclude.id,". ")+"Trying again since it is the only playlist."),this.tech_.trigger("retryplaylist"),this.mainPlaylistLoader_.load(isFinalRendition);if(isFinalRendition){if(this.main().contentSteering){const pathway=this.pathwayAttribute_(playlistToExclude),reIncludeDelay=1e3*this.contentSteeringController_.steeringManifest.ttl;return this.contentSteeringController_.excludePathway(pathway),this.excludeThenChangePathway_(),void setTimeout((()=>{this.contentSteeringController_.addAvailablePathway(pathway)}),reIncludeDelay)}let reincluded=!1;playlists.forEach((playlist=>{if(playlist===playlistToExclude)return;const excludeUntil=playlist.excludeUntil;void 0!==excludeUntil&&excludeUntil!==1/0&&(reincluded=!0,delete playlist.excludeUntil)})),reincluded&&(videojs.log.warn("Removing other playlists from the exclusion list because the last rendition is about to be excluded."),this.tech_.trigger("retryplaylist"))}let excludeUntil;excludeUntil=playlistToExclude.playlistErrors_>this.maxPlaylistRetries?1/0:Date.now()+1e3*playlistExclusionDuration,playlistToExclude.excludeUntil=excludeUntil,error.reason&&(playlistToExclude.lastExcludeReason_=error.reason),this.tech_.trigger("excludeplaylist"),this.tech_.trigger({type:"usage",name:"vhs-rendition-excluded"});const nextPlaylist=this.selectPlaylist();if(!nextPlaylist)return this.error="Playback cannot continue. No available working or supported playlists.",void this.trigger("error");const logFn=error.internal?this.logger_:videojs.log.warn,errorMessage=error.message?" "+error.message:"";logFn("".concat(error.internal?"Internal problem":"Problem"," encountered with playlist ").concat(playlistToExclude.id,".")+"".concat(errorMessage," Switching to playlist ").concat(nextPlaylist.id,".")),nextPlaylist.attributes.AUDIO!==playlistToExclude.attributes.AUDIO&&this.delegateLoaders_("audio",["abort","pause"]),nextPlaylist.attributes.SUBTITLES!==playlistToExclude.attributes.SUBTITLES&&this.delegateLoaders_("subtitle",["abort","pause"]),this.delegateLoaders_("main",["abort","pause"]);const delayDuration=nextPlaylist.targetDuration/2*1e3||5e3,shouldDelay="number"==typeof nextPlaylist.lastRequest&&Date.now()-nextPlaylist.lastRequest<=delayDuration;return this.switchMedia_(nextPlaylist,"exclude",isFinalRendition||shouldDelay)}pauseLoading(){this.delegateLoaders_("all",["abort","pause"]),this.stopABRTimer_()}delegateLoaders_(filter,fnNames){const loaders=[],dontFilterPlaylist="all"===filter;(dontFilterPlaylist||"main"===filter)&&loaders.push(this.mainPlaylistLoader_);const mediaTypes=[];(dontFilterPlaylist||"audio"===filter)&&mediaTypes.push("AUDIO"),(dontFilterPlaylist||"subtitle"===filter)&&(mediaTypes.push("CLOSED-CAPTIONS"),mediaTypes.push("SUBTITLES")),mediaTypes.forEach((mediaType=>{const loader=this.mediaTypes_[mediaType]&&this.mediaTypes_[mediaType].activePlaylistLoader;loader&&loaders.push(loader)})),["main","audio","subtitle"].forEach((name=>{const loader=this["".concat(name,"SegmentLoader_")];!loader||filter!==name&&"all"!==filter||loaders.push(loader)})),loaders.forEach((loader=>fnNames.forEach((fnName=>{"function"==typeof loader[fnName]&&loader[fnName]()}))))}setCurrentTime(currentTime){const buffered=findRange(this.tech_.buffered(),currentTime);return this.mainPlaylistLoader_&&this.mainPlaylistLoader_.media()&&this.mainPlaylistLoader_.media().segments?buffered&&buffered.length?currentTime:(this.mainSegmentLoader_.pause(),this.mainSegmentLoader_.resetEverything(),this.mediaTypes_.AUDIO.activePlaylistLoader&&(this.audioSegmentLoader_.pause(),this.audioSegmentLoader_.resetEverything()),this.mediaTypes_.SUBTITLES.activePlaylistLoader&&(this.subtitleSegmentLoader_.pause(),this.subtitleSegmentLoader_.resetEverything()),void this.load()):0}duration(){if(!this.mainPlaylistLoader_)return 0;const media=this.mainPlaylistLoader_.media();return media?media.endList?this.mediaSource?this.mediaSource.duration:Vhs$1.Playlist.duration(media):1/0:0}seekable(){return this.seekable_}onSyncInfoUpdate_(){let audioSeekable;if(!this.mainPlaylistLoader_)return;let media=this.mainPlaylistLoader_.media();if(!media)return;let expired=this.syncController_.getExpiredTime(media,this.duration());if(null===expired)return;const main=this.mainPlaylistLoader_.main,mainSeekable=Vhs$1.Playlist.seekable(media,expired,Vhs$1.Playlist.liveEdgeDelay(main,media));if(0===mainSeekable.length)return;if(this.mediaTypes_.AUDIO.activePlaylistLoader){if(media=this.mediaTypes_.AUDIO.activePlaylistLoader.media(),expired=this.syncController_.getExpiredTime(media,this.duration()),null===expired)return;if(audioSeekable=Vhs$1.Playlist.seekable(media,expired,Vhs$1.Playlist.liveEdgeDelay(main,media)),0===audioSeekable.length)return}let oldEnd,oldStart;this.seekable_&&this.seekable_.length&&(oldEnd=this.seekable_.end(0),oldStart=this.seekable_.start(0)),audioSeekable?audioSeekable.start(0)>mainSeekable.end(0)||mainSeekable.start(0)>audioSeekable.end(0)?this.seekable_=mainSeekable:this.seekable_=createTimeRanges([[audioSeekable.start(0)>mainSeekable.start(0)?audioSeekable.start(0):mainSeekable.start(0),audioSeekable.end(0)<mainSeekable.end(0)?audioSeekable.end(0):mainSeekable.end(0)]]):this.seekable_=mainSeekable,this.seekable_&&this.seekable_.length&&this.seekable_.end(0)===oldEnd&&this.seekable_.start(0)===oldStart||(this.logger_("seekable updated [".concat(printableRange(this.seekable_),"]")),this.tech_.trigger("seekablechanged"))}updateDuration(isLive){if(this.updateDuration_&&(this.mediaSource.removeEventListener("sourceopen",this.updateDuration_),this.updateDuration_=null),"open"!==this.mediaSource.readyState)return this.updateDuration_=this.updateDuration.bind(this,isLive),void this.mediaSource.addEventListener("sourceopen",this.updateDuration_);if(isLive){const seekable=this.seekable();if(!seekable.length)return;return void((isNaN(this.mediaSource.duration)||this.mediaSource.duration<seekable.end(seekable.length-1))&&this.sourceUpdater_.setDuration(seekable.end(seekable.length-1)))}const buffered=this.tech_.buffered();let duration=Vhs$1.Playlist.duration(this.mainPlaylistLoader_.media());buffered.length>0&&(duration=Math.max(duration,buffered.end(buffered.length-1))),this.mediaSource.duration!==duration&&this.sourceUpdater_.setDuration(duration)}dispose(){this.trigger("dispose"),this.decrypter_.terminate(),this.mainPlaylistLoader_.dispose(),this.mainSegmentLoader_.dispose(),this.contentSteeringController_.dispose(),this.keyStatusMap_.clear(),this.loadOnPlay_&&this.tech_.off("play",this.loadOnPlay_),["AUDIO","SUBTITLES"].forEach((type=>{const groups=this.mediaTypes_[type].groups;for(const id in groups)groups[id].forEach((group=>{group.playlistLoader&&group.playlistLoader.dispose()}))})),this.audioSegmentLoader_.dispose(),this.subtitleSegmentLoader_.dispose(),this.sourceUpdater_.dispose(),this.timelineChangeController_.dispose(),this.stopABRTimer_(),this.updateDuration_&&this.mediaSource.removeEventListener("sourceopen",this.updateDuration_),this.mediaSource.removeEventListener("durationchange",this.handleDurationChange_),this.mediaSource.removeEventListener("sourceopen",this.handleSourceOpen_),this.mediaSource.removeEventListener("sourceended",this.handleSourceEnded_),this.off()}main(){return this.mainPlaylistLoader_.main}media(){return this.mainPlaylistLoader_.media()||this.initialMedia_}areMediaTypesKnown_(){const usingAudioLoader=!!this.mediaTypes_.AUDIO.activePlaylistLoader,hasMainMediaInfo=!!this.mainSegmentLoader_.getCurrentMediaInfo_(),hasAudioMediaInfo=!usingAudioLoader||!!this.audioSegmentLoader_.getCurrentMediaInfo_();return!(!hasMainMediaInfo||!hasAudioMediaInfo)}getCodecsOrExclude_(){const media={main:this.mainSegmentLoader_.getCurrentMediaInfo_()||{},audio:this.audioSegmentLoader_.getCurrentMediaInfo_()||{}},playlist=this.mainSegmentLoader_.getPendingSegmentPlaylist()||this.media();media.video=media.main;const playlistCodecs=codecsForPlaylist(this.main(),playlist),codecs={},usingAudioLoader=!!this.mediaTypes_.AUDIO.activePlaylistLoader;if(media.main.hasVideo&&(codecs.video=playlistCodecs.video||media.main.videoCodec||"avc1.4d400d"),media.main.isMuxed&&(codecs.video+=",".concat(playlistCodecs.audio||media.main.audioCodec||"mp4a.40.2")),(media.main.hasAudio&&!media.main.isMuxed||media.audio.hasAudio||usingAudioLoader)&&(codecs.audio=playlistCodecs.audio||media.main.audioCodec||media.audio.audioCodec||"mp4a.40.2",media.audio.isFmp4=media.main.hasAudio&&!media.main.isMuxed?media.main.isFmp4:media.audio.isFmp4),!codecs.audio&&!codecs.video)return void this.excludePlaylist({playlistToExclude:playlist,error:{message:"Could not determine codecs for playlist."},playlistExclusionDuration:1/0});const unsupportedCodecs={};let unsupportedAudio;if(["video","audio"].forEach((function(type){if(codecs.hasOwnProperty(type)&&(isFmp4=media[type].isFmp4,codec=codecs[type],!(isFmp4?browserSupportsCodec(codec):muxerSupportsCodec(codec)))){const supporter=media[type].isFmp4?"browser":"muxer";unsupportedCodecs[supporter]=unsupportedCodecs[supporter]||[],unsupportedCodecs[supporter].push(codecs[type]),"audio"===type&&(unsupportedAudio=supporter)}var isFmp4,codec})),usingAudioLoader&&unsupportedAudio&&playlist.attributes.AUDIO){const audioGroup=playlist.attributes.AUDIO;this.main().playlists.forEach((variant=>{(variant.attributes&&variant.attributes.AUDIO)===audioGroup&&variant!==playlist&&(variant.excludeUntil=1/0)})),this.logger_("excluding audio group ".concat(audioGroup," as ").concat(unsupportedAudio,' does not support codec(s): "').concat(codecs.audio,'"'))}if(!Object.keys(unsupportedCodecs).length){if(this.sourceUpdater_.hasCreatedSourceBuffers()&&!this.sourceUpdater_.canChangeType()){const switchMessages=[];if(["video","audio"].forEach((type=>{const newCodec=(parseCodecs(this.sourceUpdater_.codecs[type]||"")[0]||{}).type,oldCodec=(parseCodecs(codecs[type]||"")[0]||{}).type;newCodec&&oldCodec&&newCodec.toLowerCase()!==oldCodec.toLowerCase()&&switchMessages.push('"'.concat(this.sourceUpdater_.codecs[type],'" -> "').concat(codecs[type],'"'))})),switchMessages.length)return void this.excludePlaylist({playlistToExclude:playlist,error:{message:"Codec switching not supported: ".concat(switchMessages.join(", "),"."),internal:!0},playlistExclusionDuration:1/0})}return codecs}{const message=Object.keys(unsupportedCodecs).reduce(((acc,supporter)=>(acc&&(acc+=", "),acc+="".concat(supporter,' does not support codec(s): "').concat(unsupportedCodecs[supporter].join(","),'"'))),"")+".";this.excludePlaylist({playlistToExclude:playlist,error:{internal:!0,message:message},playlistExclusionDuration:1/0})}}tryToCreateSourceBuffers_(){if("open"!==this.mediaSource.readyState||this.sourceUpdater_.hasCreatedSourceBuffers())return;if(!this.areMediaTypesKnown_())return;const codecs=this.getCodecsOrExclude_();if(!codecs)return;this.sourceUpdater_.createSourceBuffers(codecs);const codecString=[codecs.video,codecs.audio].filter(Boolean).join(",");this.excludeIncompatibleVariants_(codecString)}excludeUnsupportedVariants_(){const playlists=this.main().playlists,ids=[];Object.keys(playlists).forEach((key=>{const variant=playlists[key];if(-1!==ids.indexOf(variant.id))return;ids.push(variant.id);const codecs=codecsForPlaylist(this.main,variant),unsupported=[];!codecs.audio||muxerSupportsCodec(codecs.audio)||browserSupportsCodec(codecs.audio)||unsupported.push("audio codec ".concat(codecs.audio)),!codecs.video||muxerSupportsCodec(codecs.video)||browserSupportsCodec(codecs.video)||unsupported.push("video codec ".concat(codecs.video)),codecs.text&&"stpp.ttml.im1t"===codecs.text&&unsupported.push("text codec ".concat(codecs.text)),unsupported.length&&(variant.excludeUntil=1/0,this.logger_("excluding ".concat(variant.id," for unsupported: ").concat(unsupported.join(", "))))}))}excludeIncompatibleVariants_(codecString){const ids=[],playlists=this.main().playlists,codecs=unwrapCodecList(parseCodecs(codecString)),codecCount_=codecCount(codecs),videoDetails=codecs.video&&parseCodecs(codecs.video)[0]||null,audioDetails=codecs.audio&&parseCodecs(codecs.audio)[0]||null;Object.keys(playlists).forEach((key=>{const variant=playlists[key];if(-1!==ids.indexOf(variant.id)||variant.excludeUntil===1/0)return;ids.push(variant.id);const exclusionReasons=[],variantCodecs=codecsForPlaylist(this.mainPlaylistLoader_.main,variant),variantCodecCount=codecCount(variantCodecs);if(variantCodecs.audio||variantCodecs.video){if(variantCodecCount!==codecCount_&&exclusionReasons.push('codec count "'.concat(variantCodecCount,'" !== "').concat(codecCount_,'"')),!this.sourceUpdater_.canChangeType()){const variantVideoDetails=variantCodecs.video&&parseCodecs(variantCodecs.video)[0]||null,variantAudioDetails=variantCodecs.audio&&parseCodecs(variantCodecs.audio)[0]||null;variantVideoDetails&&videoDetails&&variantVideoDetails.type.toLowerCase()!==videoDetails.type.toLowerCase()&&exclusionReasons.push('video codec "'.concat(variantVideoDetails.type,'" !== "').concat(videoDetails.type,'"')),variantAudioDetails&&audioDetails&&variantAudioDetails.type.toLowerCase()!==audioDetails.type.toLowerCase()&&exclusionReasons.push('audio codec "'.concat(variantAudioDetails.type,'" !== "').concat(audioDetails.type,'"'))}exclusionReasons.length&&(variant.excludeUntil=1/0,this.logger_("excluding ".concat(variant.id,": ").concat(exclusionReasons.join(" && "))))}}))}updateAdCues_(media){let offset=0;const seekable=this.seekable();seekable.length&&(offset=seekable.start(0)),function(media,track){let offset=arguments.length>2&&void 0!==arguments[2]?arguments[2]:0;if(!media.segments)return;let cue,mediaTime=offset;for(let i=0;i<media.segments.length;i++){const segment=media.segments[i];if(cue||(cue=findAdCue(track,mediaTime+segment.duration/2)),cue){if("cueIn"in segment){cue.endTime=mediaTime,cue.adEndTime=mediaTime,mediaTime+=segment.duration,cue=null;continue}if(mediaTime<cue.endTime){mediaTime+=segment.duration;continue}cue.endTime+=segment.duration}else if("cueOut"in segment&&(cue=new window.VTTCue(mediaTime,mediaTime+segment.duration,segment.cueOut),cue.adStartTime=mediaTime,cue.adEndTime=mediaTime+parseFloat(segment.cueOut),track.addCue(cue)),"cueOutCont"in segment){const[adOffset,adTotal]=segment.cueOutCont.split("/").map(parseFloat);cue=new window.VTTCue(mediaTime,mediaTime+segment.duration,""),cue.adStartTime=mediaTime-adOffset,cue.adEndTime=cue.adStartTime+adTotal,track.addCue(cue)}mediaTime+=segment.duration}}(media,this.cueTagsTrack_,offset)}goalBufferLength(){const currentTime=this.tech_.currentTime(),initial=Config.GOAL_BUFFER_LENGTH,rate=Config.GOAL_BUFFER_LENGTH_RATE,max=Math.max(initial,Config.MAX_GOAL_BUFFER_LENGTH);return Math.min(initial+currentTime*rate,max)}bufferLowWaterLine(){const currentTime=this.tech_.currentTime(),initial=Config.BUFFER_LOW_WATER_LINE,rate=Config.BUFFER_LOW_WATER_LINE_RATE,max=Math.max(initial,Config.MAX_BUFFER_LOW_WATER_LINE),newMax=Math.max(initial,Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE);return Math.min(initial+currentTime*rate,this.bufferBasedABR?newMax:max)}bufferHighWaterLine(){return Config.BUFFER_HIGH_WATER_LINE}addDateRangesToTextTrack_(dateRanges){createMetadataTrackIfNotExists(this.inbandTextTracks_,"com.apple.streaming",this.tech_),(_ref64=>{let{inbandTextTracks:inbandTextTracks,dateRanges:dateRanges}=_ref64;const metadataTrack=inbandTextTracks.metadataTrack_;if(!metadataTrack)return;const Cue=window.WebKitDataCue||window.VTTCue;dateRanges.forEach((dateRange=>{for(const key of Object.keys(dateRange)){if(dateRangeKeysToOmit.has(key))continue;const cue=new Cue(dateRange.startTime,dateRange.endTime,"");cue.id=dateRange.id,cue.type="com.apple.quicktime.HLS",cue.value={key:dateRangeAttr[key],data:dateRange[key]},"scte35Out"!==key&&"scte35In"!==key||(cue.value.data=new Uint8Array(cue.value.data.match(/[\da-f]{2}/gi)).buffer),metadataTrack.addCue(cue)}dateRange.processDateRange()}))})({inbandTextTracks:this.inbandTextTracks_,dateRanges:dateRanges})}addMetadataToTextTrack(dispatchType,metadataArray,videoDuration){const timestampOffset=this.sourceUpdater_.videoBuffer?this.sourceUpdater_.videoTimestampOffset():this.sourceUpdater_.audioTimestampOffset();createMetadataTrackIfNotExists(this.inbandTextTracks_,dispatchType,this.tech_),addMetadata({inbandTextTracks:this.inbandTextTracks_,metadataArray:metadataArray,timestampOffset:timestampOffset,videoDuration:videoDuration})}pathwayAttribute_(playlist){return playlist.attributes["PATHWAY-ID"]||playlist.attributes.serviceLocation}initContentSteeringController_(){const main=this.main();if(main.contentSteering){for(const playlist of main.playlists)this.contentSteeringController_.addAvailablePathway(this.pathwayAttribute_(playlist));this.contentSteeringController_.assignTagProperties(main.uri,main.contentSteering),this.contentSteeringController_.queryBeforeStart?this.contentSteeringController_.requestSteeringManifest(!0):this.tech_.one("canplay",(()=>{this.contentSteeringController_.requestSteeringManifest()}))}}resetContentSteeringController_(){this.contentSteeringController_.clearAvailablePathways(),this.contentSteeringController_.dispose(),this.initContentSteeringController_()}attachContentSteeringListeners_(){this.contentSteeringController_.on("content-steering",this.excludeThenChangePathway_.bind(this)),"dash"===this.sourceType_&&this.mainPlaylistLoader_.on("loadedplaylist",(()=>{const main=this.main();(this.contentSteeringController_.didDASHTagChange(main.uri,main.contentSteering)||(()=>{const availablePathways=this.contentSteeringController_.getAvailablePathways(),newPathways=[];for(const playlist of main.playlists){const serviceLocation=playlist.attributes.serviceLocation;if(serviceLocation&&(newPathways.push(serviceLocation),!availablePathways.has(serviceLocation)))return!0}return!(newPathways.length||!availablePathways.size)})())&&this.resetContentSteeringController_()}))}excludeThenChangePathway_(){const currentPathway=this.contentSteeringController_.getPathway();if(!currentPathway)return;this.handlePathwayClones_();const playlists=this.main().playlists,ids=new Set;let didEnablePlaylists=!1;Object.keys(playlists).forEach((key=>{const variant=playlists[key],pathwayId=this.pathwayAttribute_(variant),differentPathwayId=pathwayId&&currentPathway!==pathwayId;variant.excludeUntil===1/0&&"content-steering"===variant.lastExcludeReason_&&!differentPathwayId&&(delete variant.excludeUntil,delete variant.lastExcludeReason_,didEnablePlaylists=!0);const noExcludeUntil=!variant.excludeUntil&&variant.excludeUntil!==1/0;!ids.has(variant.id)&&differentPathwayId&&noExcludeUntil&&(ids.add(variant.id),variant.excludeUntil=1/0,variant.lastExcludeReason_="content-steering",this.logger_("excluding ".concat(variant.id," for ").concat(variant.lastExcludeReason_)))})),"DASH"===this.contentSteeringController_.manifestType_&&Object.keys(this.mediaTypes_).forEach((key=>{const type=this.mediaTypes_[key];if(type.activePlaylistLoader){const currentPlaylist=type.activePlaylistLoader.media_;currentPlaylist&&currentPlaylist.attributes.serviceLocation!==currentPathway&&(didEnablePlaylists=!0)}})),didEnablePlaylists&&this.changeSegmentPathway_()}handlePathwayClones_(){const playlists=this.main().playlists,currentPathwayClones=this.contentSteeringController_.currentPathwayClones,nextPathwayClones=this.contentSteeringController_.nextPathwayClones;if(currentPathwayClones&&currentPathwayClones.size||nextPathwayClones&&nextPathwayClones.size){for(const[id,clone]of currentPathwayClones.entries()){nextPathwayClones.get(id)||(this.mainPlaylistLoader_.updateOrDeleteClone(clone),this.contentSteeringController_.excludePathway(id))}for(const[id,clone]of nextPathwayClones.entries()){const oldClone=currentPathwayClones.get(id);if(oldClone)this.equalPathwayClones_(oldClone,clone)||(this.mainPlaylistLoader_.updateOrDeleteClone(clone,!0),this.contentSteeringController_.addAvailablePathway(id));else{playlists.filter((p=>p.attributes["PATHWAY-ID"]===clone["BASE-ID"])).forEach((p=>{this.mainPlaylistLoader_.addClonePathway(clone,p)})),this.contentSteeringController_.addAvailablePathway(id)}}this.contentSteeringController_.currentPathwayClones=new Map(JSON.parse(JSON.stringify([...nextPathwayClones])))}}equalPathwayClones_(a,b){if(a["BASE-ID"]!==b["BASE-ID"]||a.ID!==b.ID||a["URI-REPLACEMENT"].HOST!==b["URI-REPLACEMENT"].HOST)return!1;const aParams=a["URI-REPLACEMENT"].PARAMS,bParams=b["URI-REPLACEMENT"].PARAMS;for(const p in aParams)if(aParams[p]!==bParams[p])return!1;for(const p in bParams)if(aParams[p]!==bParams[p])return!1;return!0}changeSegmentPathway_(){const nextPlaylist=this.selectPlaylist();this.pauseLoading(),"DASH"===this.contentSteeringController_.manifestType_&&this.switchMediaForDASHContentSteering_(),this.switchMedia_(nextPlaylist,"content-steering")}excludeNonUsablePlaylistsByKeyId_(){if(!this.mainPlaylistLoader_||!this.mainPlaylistLoader_.main)return;let nonUsableKeyStatusCount=0;this.mainPlaylistLoader_.main.playlists.forEach((playlist=>{const keyIdSet=this.mainPlaylistLoader_.getKeyIdSet(playlist);keyIdSet&&keyIdSet.size&&keyIdSet.forEach((key=>{const hasUsableKeyStatus=this.keyStatusMap_.has(key)&&"usable"===this.keyStatusMap_.get(key),nonUsableExclusion="non-usable"===playlist.lastExcludeReason_&&playlist.excludeUntil===1/0;hasUsableKeyStatus?hasUsableKeyStatus&&nonUsableExclusion&&(delete playlist.excludeUntil,delete playlist.lastExcludeReason_,this.logger_("enabling playlist ".concat(playlist.id," because key ID ").concat(key," is ").concat("usable"))):(playlist.excludeUntil!==1/0&&"non-usable"!==playlist.lastExcludeReason_&&(playlist.excludeUntil=1/0,playlist.lastExcludeReason_="non-usable",this.logger_("excluding playlist ".concat(playlist.id," because the key ID ").concat(key," doesn't exist in the keyStatusMap or is not ").concat("usable"))),nonUsableKeyStatusCount++)}))})),nonUsableKeyStatusCount>=this.mainPlaylistLoader_.main.playlists.length&&this.mainPlaylistLoader_.main.playlists.forEach((playlist=>{const isNonHD=playlist&&playlist.attributes&&playlist.attributes.RESOLUTION&&playlist.attributes.RESOLUTION.height<720,excludedForNonUsableKey=playlist.excludeUntil===1/0&&"non-usable"===playlist.lastExcludeReason_;isNonHD&&excludedForNonUsableKey&&(delete playlist.excludeUntil,videojs.log.warn("enabling non-HD playlist ".concat(playlist.id," because all playlists were excluded due to ").concat("non-usable"," key IDs")))}))}addKeyStatus_(keyId,status){const formattedKeyIdString=("string"==typeof keyId?keyId:(buffer=>{const uInt8Buffer=new Uint8Array(buffer);return Array.from(uInt8Buffer).map((byte=>byte.toString(16).padStart(2,"0"))).join("")})(keyId)).slice(0,32).toLowerCase();this.logger_("KeyStatus '".concat(status,"' with key ID ").concat(formattedKeyIdString," added to the keyStatusMap")),this.keyStatusMap_.set(formattedKeyIdString,status)}updatePlaylistByKeyStatus(keyId,status){this.addKeyStatus_(keyId,status),this.waitingForFastQualityPlaylistReceived_||this.excludeNonUsableThenChangePlaylist_(),this.mainPlaylistLoader_.off("loadedplaylist",this.excludeNonUsableThenChangePlaylist_.bind(this)),this.mainPlaylistLoader_.on("loadedplaylist",this.excludeNonUsableThenChangePlaylist_.bind(this))}excludeNonUsableThenChangePlaylist_(){this.excludeNonUsablePlaylistsByKeyId_(),this.fastQualityChange_()}}class Representation{constructor(vhsHandler,playlist,id){const{playlistController_:pc}=vhsHandler,qualityChangeFunction=pc.fastQualityChange_.bind(pc);if(playlist.attributes){const resolution=playlist.attributes.RESOLUTION;this.width=resolution&&resolution.width,this.height=resolution&&resolution.height,this.bandwidth=playlist.attributes.BANDWIDTH,this.frameRate=playlist.attributes["FRAME-RATE"]}var loader,playlistID,changePlaylistFn;this.codecs=codecsForPlaylist(pc.main(),playlist),this.playlist=playlist,this.id=id,this.enabled=(loader=vhsHandler.playlists,playlistID=playlist.id,changePlaylistFn=qualityChangeFunction,enable=>{const playlist=loader.main.playlists[playlistID],incompatible=isIncompatible(playlist),currentlyEnabled=isEnabled(playlist);return void 0===enable?currentlyEnabled:(enable?delete playlist.disabled:playlist.disabled=!0,enable===currentlyEnabled||incompatible||(changePlaylistFn(),enable?loader.trigger("renditionenabled"):loader.trigger("renditiondisabled")),enable)})}}const timerCancelEvents=["seeking","seeked","pause","playing","error"];class PlaybackWatcher{constructor(options){this.playlistController_=options.playlistController,this.tech_=options.tech,this.seekable=options.seekable,this.allowSeeksWithinUnsafeLiveWindow=options.allowSeeksWithinUnsafeLiveWindow,this.liveRangeSafeTimeDelta=options.liveRangeSafeTimeDelta,this.media=options.media,this.consecutiveUpdates=0,this.lastRecordedTime=null,this.checkCurrentTimeTimeout_=null,this.logger_=logger("PlaybackWatcher"),this.logger_("initialize");const playHandler=()=>this.monitorCurrentTime_(),canPlayHandler=()=>this.monitorCurrentTime_(),waitingHandler=()=>this.techWaiting_(),cancelTimerHandler=()=>this.resetTimeUpdate_(),pc=this.playlistController_,loaderTypes=["main","subtitle","audio"],loaderChecks={};loaderTypes.forEach((type=>{loaderChecks[type]={reset:()=>this.resetSegmentDownloads_(type),updateend:()=>this.checkSegmentDownloads_(type)},pc["".concat(type,"SegmentLoader_")].on("appendsdone",loaderChecks[type].updateend),pc["".concat(type,"SegmentLoader_")].on("playlistupdate",loaderChecks[type].reset),this.tech_.on(["seeked","seeking"],loaderChecks[type].reset)}));const setSeekingHandlers=fn=>{["main","audio"].forEach((type=>{pc["".concat(type,"SegmentLoader_")][fn]("appended",this.seekingAppendCheck_)}))};this.seekingAppendCheck_=()=>{this.fixesBadSeeks_()&&(this.consecutiveUpdates=0,this.lastRecordedTime=this.tech_.currentTime(),setSeekingHandlers("off"))},this.clearSeekingAppendCheck_=()=>setSeekingHandlers("off"),this.watchForBadSeeking_=()=>{this.clearSeekingAppendCheck_(),setSeekingHandlers("on")},this.tech_.on("seeked",this.clearSeekingAppendCheck_),this.tech_.on("seeking",this.watchForBadSeeking_),this.tech_.on("waiting",waitingHandler),this.tech_.on(timerCancelEvents,cancelTimerHandler),this.tech_.on("canplay",canPlayHandler),this.tech_.one("play",playHandler),this.dispose=()=>{this.clearSeekingAppendCheck_(),this.logger_("dispose"),this.tech_.off("waiting",waitingHandler),this.tech_.off(timerCancelEvents,cancelTimerHandler),this.tech_.off("canplay",canPlayHandler),this.tech_.off("play",playHandler),this.tech_.off("seeking",this.watchForBadSeeking_),this.tech_.off("seeked",this.clearSeekingAppendCheck_),loaderTypes.forEach((type=>{pc["".concat(type,"SegmentLoader_")].off("appendsdone",loaderChecks[type].updateend),pc["".concat(type,"SegmentLoader_")].off("playlistupdate",loaderChecks[type].reset),this.tech_.off(["seeked","seeking"],loaderChecks[type].reset)})),this.checkCurrentTimeTimeout_&&window.clearTimeout(this.checkCurrentTimeTimeout_),this.resetTimeUpdate_()}}monitorCurrentTime_(){this.checkCurrentTime_(),this.checkCurrentTimeTimeout_&&window.clearTimeout(this.checkCurrentTimeTimeout_),this.checkCurrentTimeTimeout_=window.setTimeout(this.monitorCurrentTime_.bind(this),250)}resetSegmentDownloads_(type){const loader=this.playlistController_["".concat(type,"SegmentLoader_")];this["".concat(type,"StalledDownloads_")]>0&&this.logger_("resetting possible stalled download count for ".concat(type," loader")),this["".concat(type,"StalledDownloads_")]=0,this["".concat(type,"Buffered_")]=loader.buffered_()}checkSegmentDownloads_(type){const pc=this.playlistController_,loader=pc["".concat(type,"SegmentLoader_")],buffered=loader.buffered_(),isBufferedDifferent=function(a,b){if(a===b)return!1;if(!a&&b||!b&&a)return!0;if(a.length!==b.length)return!0;for(let i=0;i<a.length;i++)if(a.start(i)!==b.start(i)||a.end(i)!==b.end(i))return!0;return!1}(this["".concat(type,"Buffered_")],buffered);this["".concat(type,"Buffered_")]=buffered,isBufferedDifferent?this.resetSegmentDownloads_(type):(this["".concat(type,"StalledDownloads_")]++,this.logger_("found #".concat(this["".concat(type,"StalledDownloads_")]," ").concat(type," appends that did not increase buffer (possible stalled download)"),{playlistId:loader.playlist_&&loader.playlist_.id,buffered:timeRangesToArray(buffered)}),this["".concat(type,"StalledDownloads_")]<10||(this.logger_("".concat(type," loader stalled download exclusion")),this.resetSegmentDownloads_(type),this.tech_.trigger({type:"usage",name:"vhs-".concat(type,"-download-exclusion")}),"subtitle"!==type&&pc.excludePlaylist({error:{message:"Excessive ".concat(type," segment downloading detected.")},playlistExclusionDuration:1/0})))}checkCurrentTime_(){if(this.tech_.paused()||this.tech_.seeking())return;const currentTime=this.tech_.currentTime(),buffered=this.tech_.buffered();if(this.lastRecordedTime===currentTime&&(!buffered.length||currentTime+.1>=buffered.end(buffered.length-1)))return this.techWaiting_();this.consecutiveUpdates>=5&&currentTime===this.lastRecordedTime?(this.consecutiveUpdates++,this.waiting_()):currentTime===this.lastRecordedTime?this.consecutiveUpdates++:(this.consecutiveUpdates=0,this.lastRecordedTime=currentTime)}resetTimeUpdate_(){this.consecutiveUpdates=0}fixesBadSeeks_(){if(!this.tech_.seeking())return!1;const seekable=this.seekable(),currentTime=this.tech_.currentTime();let seekTo;if(this.afterSeekableWindow_(seekable,currentTime,this.media(),this.allowSeeksWithinUnsafeLiveWindow)){seekTo=seekable.end(seekable.length-1)}if(this.beforeSeekableWindow_(seekable,currentTime)){const seekableStart=seekable.start(0);seekTo=seekableStart+(seekableStart===seekable.end(0)?0:.1)}if(void 0!==seekTo)return this.logger_("Trying to seek outside of seekable at time ".concat(currentTime," with ")+"seekable range ".concat(printableRange(seekable),". Seeking to ")+"".concat(seekTo,".")),this.tech_.setCurrentTime(seekTo),!0;const sourceUpdater=this.playlistController_.sourceUpdater_,buffered=this.tech_.buffered(),audioBuffered=sourceUpdater.audioBuffer?sourceUpdater.audioBuffered():null,videoBuffered=sourceUpdater.videoBuffer?sourceUpdater.videoBuffered():null,media=this.media(),minAppendedDuration=media.partTargetDuration?media.partTargetDuration:2*(media.targetDuration-.03333333333333333),bufferedToCheck=[audioBuffered,videoBuffered];for(let i=0;i<bufferedToCheck.length;i++){if(!bufferedToCheck[i])continue;if(timeAheadOf(bufferedToCheck[i],currentTime)<minAppendedDuration)return!1}const nextRange=findNextRange(buffered,currentTime);return 0!==nextRange.length&&(seekTo=nextRange.start(0)+.1,this.logger_("Buffered region starts (".concat(nextRange.start(0),") ")+" just beyond seek point (".concat(currentTime,"). Seeking to ").concat(seekTo,".")),this.tech_.setCurrentTime(seekTo),!0)}waiting_(){if(this.techWaiting_())return;const currentTime=this.tech_.currentTime(),buffered=this.tech_.buffered(),currentRange=findRange(buffered,currentTime);return currentRange.length&&currentTime+3<=currentRange.end(0)?(this.resetTimeUpdate_(),this.tech_.setCurrentTime(currentTime),this.logger_("Stopped at ".concat(currentTime," while inside a buffered region ")+"[".concat(currentRange.start(0)," -> ").concat(currentRange.end(0),"]. Attempting to resume ")+"playback by seeking to the current time."),void this.tech_.trigger({type:"usage",name:"vhs-unknown-waiting"})):void 0}techWaiting_(){const seekable=this.seekable(),currentTime=this.tech_.currentTime();if(this.tech_.seeking())return!0;if(this.beforeSeekableWindow_(seekable,currentTime)){const livePoint=seekable.end(seekable.length-1);return this.logger_("Fell out of live window at time ".concat(currentTime,". Seeking to ")+"live point (seekable end) ".concat(livePoint)),this.resetTimeUpdate_(),this.tech_.setCurrentTime(livePoint),this.tech_.trigger({type:"usage",name:"vhs-live-resync"}),!0}const sourceUpdater=this.tech_.vhs.playlistController_.sourceUpdater_,buffered=this.tech_.buffered();if(this.videoUnderflow_({audioBuffered:sourceUpdater.audioBuffered(),videoBuffered:sourceUpdater.videoBuffered(),currentTime:currentTime}))return this.resetTimeUpdate_(),this.tech_.setCurrentTime(currentTime),this.tech_.trigger({type:"usage",name:"vhs-video-underflow"}),!0;const nextRange=findNextRange(buffered,currentTime);return nextRange.length>0&&(this.logger_("Stopped at ".concat(currentTime," and seeking to ").concat(nextRange.start(0))),this.resetTimeUpdate_(),this.skipTheGap_(currentTime),!0)}afterSeekableWindow_(seekable,currentTime,playlist){let allowSeeksWithinUnsafeLiveWindow=arguments.length>3&&void 0!==arguments[3]&&arguments[3];if(!seekable.length)return!1;let allowedEnd=seekable.end(seekable.length-1)+.1;const isLive=!playlist.endList,isLLHLS="number"==typeof playlist.partTargetDuration;return isLive&&(isLLHLS||allowSeeksWithinUnsafeLiveWindow)&&(allowedEnd=seekable.end(seekable.length-1)+3*playlist.targetDuration),currentTime>allowedEnd}beforeSeekableWindow_(seekable,currentTime){return!!(seekable.length&&seekable.start(0)>0&&currentTime<seekable.start(0)-this.liveRangeSafeTimeDelta)}videoUnderflow_(_ref83){let gap,{videoBuffered:videoBuffered,audioBuffered:audioBuffered,currentTime:currentTime}=_ref83;if(videoBuffered){if(videoBuffered.length&&audioBuffered.length){const lastVideoRange=findRange(videoBuffered,currentTime-3),videoRange=findRange(videoBuffered,currentTime),audioRange=findRange(audioBuffered,currentTime);audioRange.length&&!videoRange.length&&lastVideoRange.length&&(gap={start:lastVideoRange.end(0),end:audioRange.end(0)})}else{findNextRange(videoBuffered,currentTime).length||(gap=this.gapFromVideoUnderflow_(videoBuffered,currentTime))}return!!gap&&(this.logger_("Encountered a gap in video from ".concat(gap.start," to ").concat(gap.end,". ")+"Seeking to current time ".concat(currentTime)),!0)}}skipTheGap_(scheduledCurrentTime){const buffered=this.tech_.buffered(),currentTime=this.tech_.currentTime(),nextRange=findNextRange(buffered,currentTime);this.resetTimeUpdate_(),0!==nextRange.length&&currentTime===scheduledCurrentTime&&(this.logger_("skipTheGap_:","currentTime:",currentTime,"scheduled currentTime:",scheduledCurrentTime,"nextRange start:",nextRange.start(0)),this.tech_.setCurrentTime(nextRange.start(0)+.03333333333333333),this.tech_.trigger({type:"usage",name:"vhs-gap-skip"}))}gapFromVideoUnderflow_(buffered,currentTime){const gaps=function(buffered){if(buffered.length<2)return createTimeRanges();const ranges=[];for(let i=1;i<buffered.length;i++){const start=buffered.end(i-1),end=buffered.start(i);ranges.push([start,end])}return createTimeRanges(ranges)}(buffered);for(let i=0;i<gaps.length;i++){const start=gaps.start(i),end=gaps.end(i);if(currentTime-start<4&&currentTime-start>2)return{start:start,end:end}}return null}}const defaultOptions={errorInterval:30,getSource(next){return next(this.tech({IWillNotUseThisInPlugins:!0}).currentSource_||this.currentSource())}},initPlugin=function(player,options){let lastCalled=0,seekTo=0;const localOptions=merge(defaultOptions,options);player.ready((()=>{player.trigger({type:"usage",name:"vhs-error-reload-initialized"})}));const loadedMetadataHandler=function(){seekTo&&player.currentTime(seekTo)},setSource=function(sourceObj){null!=sourceObj&&(seekTo=player.duration()!==1/0&&player.currentTime()||0,player.one("loadedmetadata",loadedMetadataHandler),player.src(sourceObj),player.trigger({type:"usage",name:"vhs-error-reload"}),player.play())},errorHandler=function(){if(Date.now()-lastCalled<1e3*localOptions.errorInterval)player.trigger({type:"usage",name:"vhs-error-reload-canceled"});else{if(localOptions.getSource&&"function"==typeof localOptions.getSource)return lastCalled=Date.now(),localOptions.getSource.call(player,setSource);videojs.log.error("ERROR: reloadSourceOnError - The option getSource must be a function!")}},cleanupEvents=function(){player.off("loadedmetadata",loadedMetadataHandler),player.off("error",errorHandler),player.off("dispose",cleanupEvents)};player.on("error",errorHandler),player.on("dispose",cleanupEvents),player.reloadSourceOnError=function(newOptions){cleanupEvents(),initPlugin(player,newOptions)}},reloadSourceOnError=function(options){initPlugin(this,options)};const Vhs={PlaylistLoader:PlaylistLoader,Playlist:Playlist,utils:utils,STANDARD_PLAYLIST_SELECTOR:lastBandwidthSelector,INITIAL_PLAYLIST_SELECTOR:function(){const playlists=this.playlists.main.playlists.filter(Playlist.isEnabled);stableSort(playlists,((a,b)=>comparePlaylistBandwidth(a,b)));return playlists.filter((playlist=>!!codecsForPlaylist(this.playlists.main,playlist).video))[0]||null},lastBandwidthSelector:lastBandwidthSelector,movingAverageBandwidthSelector:function(decay){let average=-1,lastSystemBandwidth=-1;if(decay<0||decay>1)throw new Error("Moving average bandwidth decay must be between 0 and 1.");return function(){const pixelRatio=this.useDevicePixelRatio&&window.devicePixelRatio||1;return average<0&&(average=this.systemBandwidth,lastSystemBandwidth=this.systemBandwidth),this.systemBandwidth>0&&this.systemBandwidth!==lastSystemBandwidth&&(average=decay*this.systemBandwidth+(1-decay)*average,lastSystemBandwidth=this.systemBandwidth),simpleSelector(this.playlists.main,average,parseInt(safeGetComputedStyle(this.tech_.el(),"width"),10)*pixelRatio,parseInt(safeGetComputedStyle(this.tech_.el(),"height"),10)*pixelRatio,this.limitRenditionByPlayerDimensions,this.playlistController_)}},comparePlaylistBandwidth:comparePlaylistBandwidth,comparePlaylistResolution:function(left,right){let leftWidth,rightWidth;return left.attributes.RESOLUTION&&left.attributes.RESOLUTION.width&&(leftWidth=left.attributes.RESOLUTION.width),leftWidth=leftWidth||window.Number.MAX_VALUE,right.attributes.RESOLUTION&&right.attributes.RESOLUTION.width&&(rightWidth=right.attributes.RESOLUTION.width),rightWidth=rightWidth||window.Number.MAX_VALUE,leftWidth===rightWidth&&left.attributes.BANDWIDTH&&right.attributes.BANDWIDTH?left.attributes.BANDWIDTH-right.attributes.BANDWIDTH:leftWidth-rightWidth},xhr:xhrFactory()};Object.keys(Config).forEach((prop=>{Object.defineProperty(Vhs,prop,{get:()=>(videojs.log.warn("using Vhs.".concat(prop," is UNSAFE be sure you know what you are doing")),Config[prop]),set(value){videojs.log.warn("using Vhs.".concat(prop," is UNSAFE be sure you know what you are doing")),"number"!=typeof value||value<0?videojs.log.warn("value of Vhs.".concat(prop," must be greater than or equal to 0")):Config[prop]=value}})}));const handleVhsMediaChange=function(qualityLevels,playlistLoader){const newPlaylist=playlistLoader.media();let selectedIndex=-1;for(let i=0;i<qualityLevels.length;i++)if(qualityLevels[i].id===newPlaylist.id){selectedIndex=i;break}qualityLevels.selectedIndex_=selectedIndex,qualityLevels.trigger({selectedIndex:selectedIndex,type:"change"})};Vhs.canPlaySource=function(){return videojs.log.warn("VHS is no longer a tech. Please remove it from your player's techOrder.")};const waitForKeySessionCreation=_ref84=>{let{player:player,sourceKeySystems:sourceKeySystems,audioMedia:audioMedia,mainPlaylists:mainPlaylists}=_ref84;if(!player.eme.initializeMediaKeys)return Promise.resolve();const keySystemsOptionsArr=((playlists,keySystems)=>playlists.reduce(((keySystemsArr,playlist)=>{if(!playlist.contentProtection)return keySystemsArr;const keySystemsOptions=keySystems.reduce(((keySystemsObj,keySystem)=>{const keySystemOptions=playlist.contentProtection[keySystem];return keySystemOptions&&keySystemOptions.pssh&&(keySystemsObj[keySystem]={pssh:keySystemOptions.pssh}),keySystemsObj}),{});return Object.keys(keySystemsOptions).length&&keySystemsArr.push(keySystemsOptions),keySystemsArr}),[]))(audioMedia?mainPlaylists.concat([audioMedia]):mainPlaylists,Object.keys(sourceKeySystems)),initializationFinishedPromises=[],keySessionCreatedPromises=[];return keySystemsOptionsArr.forEach((keySystemsOptions=>{keySessionCreatedPromises.push(new Promise(((resolve,reject)=>{player.tech_.one("keysessioncreated",resolve)}))),initializationFinishedPromises.push(new Promise(((resolve,reject)=>{player.eme.initializeMediaKeys({keySystems:keySystemsOptions},(err=>{err?reject(err):resolve()}))})))})),Promise.race([Promise.all(initializationFinishedPromises),Promise.race(keySessionCreatedPromises)])},setupEmeOptions=_ref85=>{let{player:player,sourceKeySystems:sourceKeySystems,media:media,audioMedia:audioMedia}=_ref85;const sourceOptions=((keySystemOptions,mainPlaylist,audioPlaylist)=>{if(!keySystemOptions)return keySystemOptions;let codecs={};mainPlaylist&&mainPlaylist.attributes&&mainPlaylist.attributes.CODECS&&(codecs=unwrapCodecList(parseCodecs(mainPlaylist.attributes.CODECS))),audioPlaylist&&audioPlaylist.attributes&&audioPlaylist.attributes.CODECS&&(codecs.audio=audioPlaylist.attributes.CODECS);const videoContentType=getMimeForCodec(codecs.video),audioContentType=getMimeForCodec(codecs.audio),keySystemContentTypes={};for(const keySystem in keySystemOptions)keySystemContentTypes[keySystem]={},audioContentType&&(keySystemContentTypes[keySystem].audioContentType=audioContentType),videoContentType&&(keySystemContentTypes[keySystem].videoContentType=videoContentType),mainPlaylist.contentProtection&&mainPlaylist.contentProtection[keySystem]&&mainPlaylist.contentProtection[keySystem].pssh&&(keySystemContentTypes[keySystem].pssh=mainPlaylist.contentProtection[keySystem].pssh),"string"==typeof keySystemOptions[keySystem]&&(keySystemContentTypes[keySystem].url=keySystemOptions[keySystem]);return merge(keySystemOptions,keySystemContentTypes)})(sourceKeySystems,media,audioMedia);return!!sourceOptions&&(player.currentSource().keySystems=sourceOptions,!(sourceOptions&&!player.eme)||(videojs.log.warn("DRM encrypted source cannot be decrypted without a DRM plugin"),!1))},getVhsLocalStorage=()=>{if(!window.localStorage)return null;const storedObject=window.localStorage.getItem("videojs-vhs");if(!storedObject)return null;try{return JSON.parse(storedObject)}catch(e){return null}},addOnRequestHook=(xhr,callback)=>{xhr._requestCallbackSet||(xhr._requestCallbackSet=new Set),xhr._requestCallbackSet.add(callback)},addOnResponseHook=(xhr,callback)=>{xhr._responseCallbackSet||(xhr._responseCallbackSet=new Set),xhr._responseCallbackSet.add(callback)},removeOnRequestHook=(xhr,callback)=>{xhr._requestCallbackSet&&(xhr._requestCallbackSet.delete(callback),xhr._requestCallbackSet.size||delete xhr._requestCallbackSet)},removeOnResponseHook=(xhr,callback)=>{xhr._responseCallbackSet&&(xhr._responseCallbackSet.delete(callback),xhr._responseCallbackSet.size||delete xhr._responseCallbackSet)};Vhs.supportsNativeHls=function(){if(!document||!document.createElement)return!1;const video=document.createElement("video");if(!videojs.getTech("Html5").isSupported())return!1;return["application/vnd.apple.mpegurl","audio/mpegurl","audio/x-mpegurl","application/x-mpegurl","video/x-mpegurl","video/mpegurl","application/mpegurl"].some((function(canItPlay){return/maybe|probably/i.test(video.canPlayType(canItPlay))}))}(),Vhs.supportsNativeDash=!!(document&&document.createElement&&videojs.getTech("Html5").isSupported())&&/maybe|probably/i.test(document.createElement("video").canPlayType("application/dash+xml")),Vhs.supportsTypeNatively=type=>"hls"===type?Vhs.supportsNativeHls:"dash"===type&&Vhs.supportsNativeDash,Vhs.isSupported=function(){return videojs.log.warn("VHS is no longer a tech. Please remove it from your player's techOrder.")},Vhs.xhr.onRequest=function(callback){addOnRequestHook(Vhs.xhr,callback)},Vhs.xhr.onResponse=function(callback){addOnResponseHook(Vhs.xhr,callback)},Vhs.xhr.offRequest=function(callback){removeOnRequestHook(Vhs.xhr,callback)},Vhs.xhr.offResponse=function(callback){removeOnResponseHook(Vhs.xhr,callback)};const Component=videojs.getComponent("Component");class VhsHandler extends Component{constructor(source,tech,options){if(super(tech,options.vhs),"number"==typeof options.initialBandwidth&&(this.options_.bandwidth=options.initialBandwidth),this.logger_=logger("VhsHandler"),tech.options_&&tech.options_.playerId){const _player=videojs.getPlayer(tech.options_.playerId);this.player_=_player}if(this.tech_=tech,this.source_=source,this.stats={},this.ignoreNextSeekingEvent_=!1,this.setOptions_(),this.options_.overrideNative&&tech.overrideNativeAudioTracks&&tech.overrideNativeVideoTracks)tech.overrideNativeAudioTracks(!0),tech.overrideNativeVideoTracks(!0);else if(this.options_.overrideNative&&(tech.featuresNativeVideoTracks||tech.featuresNativeAudioTracks))throw new Error("Overriding native VHS requires emulated tracks. See https://git.io/vMpjB");this.on(document,["fullscreenchange","webkitfullscreenchange","mozfullscreenchange","MSFullscreenChange"],(event=>{const fullscreenElement=document.fullscreenElement||document.webkitFullscreenElement||document.mozFullScreenElement||document.msFullscreenElement;fullscreenElement&&fullscreenElement.contains(this.tech_.el())?this.playlistController_.fastQualityChange_():this.playlistController_.checkABR_()})),this.on(this.tech_,"seeking",(function(){this.ignoreNextSeekingEvent_?this.ignoreNextSeekingEvent_=!1:this.setCurrentTime(this.tech_.currentTime())})),this.on(this.tech_,"error",(function(){this.tech_.error()&&this.playlistController_&&this.playlistController_.pauseLoading()})),this.on(this.tech_,"play",this.play)}setOptions_(){let options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};if(this.options_=merge(this.options_,options),this.options_.withCredentials=this.options_.withCredentials||!1,this.options_.limitRenditionByPlayerDimensions=!1!==this.options_.limitRenditionByPlayerDimensions,this.options_.useDevicePixelRatio=this.options_.useDevicePixelRatio||!1,this.options_.useBandwidthFromLocalStorage=void 0!==this.source_.useBandwidthFromLocalStorage?this.source_.useBandwidthFromLocalStorage:this.options_.useBandwidthFromLocalStorage||!1,this.options_.useForcedSubtitles=this.options_.useForcedSubtitles||!1,this.options_.useNetworkInformationApi=this.options_.useNetworkInformationApi||!1,this.options_.useDtsForTimestampOffset=this.options_.useDtsForTimestampOffset||!1,this.options_.customTagParsers=this.options_.customTagParsers||[],this.options_.customTagMappers=this.options_.customTagMappers||[],this.options_.cacheEncryptionKeys=this.options_.cacheEncryptionKeys||!1,this.options_.llhls=!1!==this.options_.llhls,this.options_.bufferBasedABR=this.options_.bufferBasedABR||!1,"number"!=typeof this.options_.playlistExclusionDuration&&(this.options_.playlistExclusionDuration=60),"number"!=typeof this.options_.bandwidth&&this.options_.useBandwidthFromLocalStorage){const storedObject=getVhsLocalStorage();storedObject&&storedObject.bandwidth&&(this.options_.bandwidth=storedObject.bandwidth,this.tech_.trigger({type:"usage",name:"vhs-bandwidth-from-local-storage"})),storedObject&&storedObject.throughput&&(this.options_.throughput=storedObject.throughput,this.tech_.trigger({type:"usage",name:"vhs-throughput-from-local-storage"}))}"number"!=typeof this.options_.bandwidth&&(this.options_.bandwidth=Config.INITIAL_BANDWIDTH),this.options_.enableLowInitialPlaylist=this.options_.enableLowInitialPlaylist&&this.options_.bandwidth===Config.INITIAL_BANDWIDTH,["withCredentials","useDevicePixelRatio","limitRenditionByPlayerDimensions","bandwidth","customTagParsers","customTagMappers","cacheEncryptionKeys","playlistSelector","initialPlaylistSelector","bufferBasedABR","liveRangeSafeTimeDelta","llhls","useForcedSubtitles","useNetworkInformationApi","useDtsForTimestampOffset","exactManifestTimings","leastPixelDiffSelector"].forEach((option=>{void 0!==this.source_[option]&&(this.options_[option]=this.source_[option])})),this.limitRenditionByPlayerDimensions=this.options_.limitRenditionByPlayerDimensions,this.useDevicePixelRatio=this.options_.useDevicePixelRatio}setOptions(){let options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};this.setOptions_(options)}src(src,type){if(!src)return;var dataUri;this.setOptions_(),this.options_.src=0===(dataUri=this.source_.src).toLowerCase().indexOf("data:application/vnd.videojs.vhs+json,")?JSON.parse(dataUri.substring(dataUri.indexOf(",")+1)):dataUri,this.options_.tech=this.tech_,this.options_.externVhs=Vhs,this.options_.sourceType=simpleTypeFromSourceType(type),this.options_.seekTo=time=>{this.tech_.setCurrentTime(time)},this.playlistController_=new PlaylistController(this.options_);const playbackWatcherOptions=merge({liveRangeSafeTimeDelta:.1},this.options_,{seekable:()=>this.seekable(),media:()=>this.playlistController_.media(),playlistController:this.playlistController_});this.playbackWatcher_=new PlaybackWatcher(playbackWatcherOptions),this.playlistController_.on("error",(()=>{const player=videojs.players[this.tech_.options_.playerId];let error=this.playlistController_.error;"object"!=typeof error||error.code?"string"==typeof error&&(error={message:error,code:3}):error.code=3,player.error(error)}));const defaultSelector=this.options_.bufferBasedABR?Vhs.movingAverageBandwidthSelector(.55):Vhs.STANDARD_PLAYLIST_SELECTOR;this.playlistController_.selectPlaylist=this.selectPlaylist?this.selectPlaylist.bind(this):defaultSelector.bind(this),this.playlistController_.selectInitialPlaylist=Vhs.INITIAL_PLAYLIST_SELECTOR.bind(this),this.playlists=this.playlistController_.mainPlaylistLoader_,this.mediaSource=this.playlistController_.mediaSource,Object.defineProperties(this,{selectPlaylist:{get(){return this.playlistController_.selectPlaylist},set(selectPlaylist){this.playlistController_.selectPlaylist=selectPlaylist.bind(this)}},throughput:{get(){return this.playlistController_.mainSegmentLoader_.throughput.rate},set(throughput){this.playlistController_.mainSegmentLoader_.throughput.rate=throughput,this.playlistController_.mainSegmentLoader_.throughput.count=1}},bandwidth:{get(){let playerBandwidthEst=this.playlistController_.mainSegmentLoader_.bandwidth;const networkInformation=window.navigator.connection||window.navigator.mozConnection||window.navigator.webkitConnection;if(this.options_.useNetworkInformationApi&&networkInformation){const networkInfoBandwidthEstBitsPerSec=1e3*networkInformation.downlink*1e3;playerBandwidthEst=networkInfoBandwidthEstBitsPerSec>=1e7&&playerBandwidthEst>=1e7?Math.max(playerBandwidthEst,networkInfoBandwidthEstBitsPerSec):networkInfoBandwidthEstBitsPerSec}return playerBandwidthEst},set(bandwidth){this.playlistController_.mainSegmentLoader_.bandwidth=bandwidth,this.playlistController_.mainSegmentLoader_.throughput={rate:0,count:0}}},systemBandwidth:{get(){const invBandwidth=1/(this.bandwidth||1);let invThroughput;invThroughput=this.throughput>0?1/this.throughput:0;return Math.floor(1/(invBandwidth+invThroughput))},set(){videojs.log.error('The "systemBandwidth" property is read-only')}}}),this.options_.bandwidth&&(this.bandwidth=this.options_.bandwidth),this.options_.throughput&&(this.throughput=this.options_.throughput),Object.defineProperties(this.stats,{bandwidth:{get:()=>this.bandwidth||0,enumerable:!0},mediaRequests:{get:()=>this.playlistController_.mediaRequests_()||0,enumerable:!0},mediaRequestsAborted:{get:()=>this.playlistController_.mediaRequestsAborted_()||0,enumerable:!0},mediaRequestsTimedout:{get:()=>this.playlistController_.mediaRequestsTimedout_()||0,enumerable:!0},mediaRequestsErrored:{get:()=>this.playlistController_.mediaRequestsErrored_()||0,enumerable:!0},mediaTransferDuration:{get:()=>this.playlistController_.mediaTransferDuration_()||0,enumerable:!0},mediaBytesTransferred:{get:()=>this.playlistController_.mediaBytesTransferred_()||0,enumerable:!0},mediaSecondsLoaded:{get:()=>this.playlistController_.mediaSecondsLoaded_()||0,enumerable:!0},mediaAppends:{get:()=>this.playlistController_.mediaAppends_()||0,enumerable:!0},mainAppendsToLoadedData:{get:()=>this.playlistController_.mainAppendsToLoadedData_()||0,enumerable:!0},audioAppendsToLoadedData:{get:()=>this.playlistController_.audioAppendsToLoadedData_()||0,enumerable:!0},appendsToLoadedData:{get:()=>this.playlistController_.appendsToLoadedData_()||0,enumerable:!0},timeToLoadedData:{get:()=>this.playlistController_.timeToLoadedData_()||0,enumerable:!0},buffered:{get:()=>timeRangesToArray(this.tech_.buffered()),enumerable:!0},currentTime:{get:()=>this.tech_.currentTime(),enumerable:!0},currentSource:{get:()=>this.tech_.currentSource_,enumerable:!0},currentTech:{get:()=>this.tech_.name_,enumerable:!0},duration:{get:()=>this.tech_.duration(),enumerable:!0},main:{get:()=>this.playlists.main,enumerable:!0},playerDimensions:{get:()=>this.tech_.currentDimensions(),enumerable:!0},seekable:{get:()=>timeRangesToArray(this.tech_.seekable()),enumerable:!0},timestamp:{get:()=>Date.now(),enumerable:!0},videoPlaybackQuality:{get:()=>this.tech_.getVideoPlaybackQuality(),enumerable:!0}}),this.tech_.one("canplay",this.playlistController_.setupFirstPlay.bind(this.playlistController_)),this.tech_.on("bandwidthupdate",(()=>{this.options_.useBandwidthFromLocalStorage&&(options=>{if(!window.localStorage)return!1;let objectToStore=getVhsLocalStorage();objectToStore=objectToStore?merge(objectToStore,options):options;try{window.localStorage.setItem("videojs-vhs",JSON.stringify(objectToStore))}catch(e){return!1}})({bandwidth:this.bandwidth,throughput:Math.round(this.throughput)})})),this.playlistController_.on("selectedinitialmedia",(()=>{var vhsHandler;(vhsHandler=this).representations=()=>{const main=vhsHandler.playlistController_.main(),playlists=isAudioOnly(main)?vhsHandler.playlistController_.getAudioTrackPlaylists_():main.playlists;return playlists?playlists.filter((media=>!isIncompatible(media))).map(((e,i)=>new Representation(vhsHandler,e,e.id))):[]}})),this.playlistController_.sourceUpdater_.on("createdsourcebuffers",(()=>{this.setupEme_()})),this.on(this.playlistController_,"progress",(function(){this.tech_.trigger("progress")})),this.on(this.playlistController_,"firstplay",(function(){this.ignoreNextSeekingEvent_=!0})),this.setupQualityLevels_(),this.tech_.el()&&(this.mediaSourceUrl_=window.URL.createObjectURL(this.playlistController_.mediaSource),this.tech_.src(this.mediaSourceUrl_))}createKeySessions_(){const audioPlaylistLoader=this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader;this.logger_("waiting for EME key session creation"),waitForKeySessionCreation({player:this.player_,sourceKeySystems:this.source_.keySystems,audioMedia:audioPlaylistLoader&&audioPlaylistLoader.media(),mainPlaylists:this.playlists.main.playlists}).then((()=>{this.logger_("created EME key session"),this.playlistController_.sourceUpdater_.initializedEme()})).catch((err=>{this.logger_("error while creating EME key session",err),this.player_.error({message:"Failed to initialize media keys for EME",code:3})}))}handleWaitingForKey_(){this.logger_("waitingforkey fired, attempting to create any new key sessions"),this.createKeySessions_()}setupEme_(){const audioPlaylistLoader=this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader,didSetupEmeOptions=setupEmeOptions({player:this.player_,sourceKeySystems:this.source_.keySystems,media:this.playlists.media(),audioMedia:audioPlaylistLoader&&audioPlaylistLoader.media()});this.player_.tech_.on("keystatuschange",(e=>{this.playlistController_.updatePlaylistByKeyStatus(e.keyId,e.status)})),this.handleWaitingForKey_=this.handleWaitingForKey_.bind(this),this.player_.tech_.on("waitingforkey",this.handleWaitingForKey_),didSetupEmeOptions?this.createKeySessions_():this.playlistController_.sourceUpdater_.initializedEme()}setupQualityLevels_(){const player=videojs.players[this.tech_.options_.playerId];player&&player.qualityLevels&&!this.qualityLevels_&&(this.qualityLevels_=player.qualityLevels(),this.playlistController_.on("selectedinitialmedia",(()=>{var qualityLevels,vhs;qualityLevels=this.qualityLevels_,(vhs=this).representations().forEach((rep=>{qualityLevels.addQualityLevel(rep)})),handleVhsMediaChange(qualityLevels,vhs.playlists)})),this.playlists.on("mediachange",(()=>{handleVhsMediaChange(this.qualityLevels_,this.playlists)})))}static version(){return{"@videojs/http-streaming":"3.10.0","mux.js":"7.0.2","mpd-parser":"1.3.0","m3u8-parser":"7.1.0","aes-decrypter":"4.0.1"}}version(){return this.constructor.version()}canChangeType(){return SourceUpdater.canChangeType()}play(){this.playlistController_.play()}setCurrentTime(currentTime){this.playlistController_.setCurrentTime(currentTime)}duration(){return this.playlistController_.duration()}seekable(){return this.playlistController_.seekable()}dispose(){this.playbackWatcher_&&this.playbackWatcher_.dispose(),this.playlistController_&&this.playlistController_.dispose(),this.qualityLevels_&&this.qualityLevels_.dispose(),this.tech_&&this.tech_.vhs&&delete this.tech_.vhs,this.mediaSourceUrl_&&window.URL.revokeObjectURL&&(window.URL.revokeObjectURL(this.mediaSourceUrl_),this.mediaSourceUrl_=null),this.tech_&&this.tech_.off("waitingforkey",this.handleWaitingForKey_),super.dispose()}convertToProgramTime(time,callback){return getProgramTime({playlist:this.playlistController_.media(),time:time,callback:callback})}seekToProgramTime(programTime,callback){let pauseAfterSeek=!(arguments.length>2&&void 0!==arguments[2])||arguments[2],retryCount=arguments.length>3&&void 0!==arguments[3]?arguments[3]:2;return seekToProgramTime({programTime:programTime,playlist:this.playlistController_.media(),retryCount:retryCount,pauseAfterSeek:pauseAfterSeek,seekTo:this.options_.seekTo,tech:this.options_.tech,callback:callback})}setupXhrHooks_(){this.xhr.onRequest=callback=>{addOnRequestHook(this.xhr,callback)},this.xhr.onResponse=callback=>{addOnResponseHook(this.xhr,callback)},this.xhr.offRequest=callback=>{removeOnRequestHook(this.xhr,callback)},this.xhr.offResponse=callback=>{removeOnResponseHook(this.xhr,callback)},this.player_.trigger("xhr-hooks-ready")}}const VhsSourceHandler={name:"videojs-http-streaming",VERSION:"3.10.0",canHandleSource(srcObj){let options=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};const localOptions=merge(videojs.options,options);return VhsSourceHandler.canPlayType(srcObj.type,localOptions)},handleSource(source,tech){let options=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{};const localOptions=merge(videojs.options,options);return tech.vhs=new VhsHandler(source,tech,localOptions),tech.vhs.xhr=xhrFactory(),tech.vhs.setupXhrHooks_(),tech.vhs.src(source.src,source.type),tech.vhs},canPlayType(type,options){const simpleType=simpleTypeFromSourceType(type);if(!simpleType)return"";const overrideNative=VhsSourceHandler.getOverrideNative(options);return!Vhs.supportsTypeNatively(simpleType)||overrideNative?"maybe":""},getOverrideNative(){let options=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};const{vhs:vhs={}}=options,defaultOverrideNative=!(videojs.browser.IS_ANY_SAFARI||videojs.browser.IS_IOS),{overrideNative:overrideNative=defaultOverrideNative}=vhs;return overrideNative}};return browserSupportsCodec("avc1.4d400d,mp4a.40.2")&&videojs.getTech("Html5").registerSourceHandler(VhsSourceHandler,0),videojs.VhsHandler=VhsHandler,videojs.VhsSourceHandler=VhsSourceHandler,videojs.Vhs=Vhs,videojs.use||videojs.registerComponent("Vhs",Vhs),videojs.options.vhs=videojs.options.vhs||{},videojs.getPlugin&&videojs.getPlugin("reloadSourceOnError")||videojs.registerPlugin("reloadSourceOnError",reloadSourceOnError),videojs}));
 
 //# sourceMappingURL=video-lazy.min.js.map
\ No newline at end of file
diff --git a/media/player/videojs/amd/build/video-lazy.min.js.map b/media/player/videojs/amd/build/video-lazy.min.js.map
index edb51eaf093a..478c36dc43b1 100644
--- a/media/player/videojs/amd/build/video-lazy.min.js.map
+++ b/media/player/videojs/amd/build/video-lazy.min.js.map
@@ -1 +1 @@
-{"version":3,"file":"video-lazy.min.js","sources":["../src/video-lazy.js"],"sourcesContent":["/**\n * @license\n * Video.js 8.3.0 <http://videojs.com/>\n * Copyright Brightcove, Inc. <https://www.brightcove.com/>\n * Available under Apache License Version 2.0\n * <https://github.com/videojs/video.js/blob/main/LICENSE>\n *\n * Includes vtt.js <https://github.com/mozilla/vtt.js>\n * Available under Apache License Version 2.0\n * <https://github.com/mozilla/vtt.js/blob/main/LICENSE>\n */\n\n(function (global, factory) {\n    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :\n        typeof define === 'function' && define.amd ? define(factory) :\n            (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.videojs = factory());\n})(this, (function () { 'use strict';\n\n    var version$5 = \"8.3.0\";\n\n    /**\n     * An Object that contains lifecycle hooks as keys which point to an array\n     * of functions that are run when a lifecycle is triggered\n     *\n     * @private\n     */\n    const hooks_ = {};\n\n    /**\n     * Get a list of hooks for a specific lifecycle\n     *\n     * @param  {string} type\n     *         the lifecycle to get hooks from\n     *\n     * @param  {Function|Function[]} [fn]\n     *         Optionally add a hook (or hooks) to the lifecycle that your are getting.\n     *\n     * @return {Array}\n     *         an array of hooks, or an empty array if there are none.\n     */\n    const hooks = function (type, fn) {\n        hooks_[type] = hooks_[type] || [];\n        if (fn) {\n            hooks_[type] = hooks_[type].concat(fn);\n        }\n        return hooks_[type];\n    };\n\n    /**\n     * Add a function hook to a specific videojs lifecycle.\n     *\n     * @param {string} type\n     *        the lifecycle to hook the function to.\n     *\n     * @param {Function|Function[]}\n     *        The function or array of functions to attach.\n     */\n    const hook = function (type, fn) {\n        hooks(type, fn);\n    };\n\n    /**\n     * Remove a hook from a specific videojs lifecycle.\n     *\n     * @param  {string} type\n     *         the lifecycle that the function hooked to\n     *\n     * @param  {Function} fn\n     *         The hooked function to remove\n     *\n     * @return {boolean}\n     *         The function that was removed or undef\n     */\n    const removeHook = function (type, fn) {\n        const index = hooks(type).indexOf(fn);\n        if (index <= -1) {\n            return false;\n        }\n        hooks_[type] = hooks_[type].slice();\n        hooks_[type].splice(index, 1);\n        return true;\n    };\n\n    /**\n     * Add a function hook that will only run once to a specific videojs lifecycle.\n     *\n     * @param {string} type\n     *        the lifecycle to hook the function to.\n     *\n     * @param {Function|Function[]}\n     *        The function or array of functions to attach.\n     */\n    const hookOnce = function (type, fn) {\n        hooks(type, [].concat(fn).map(original => {\n            const wrapper = (...args) => {\n                removeHook(type, wrapper);\n                return original(...args);\n            };\n            return wrapper;\n        }));\n    };\n\n    /**\n     * @file fullscreen-api.js\n     * @module fullscreen-api\n     */\n\n    /**\n     * Store the browser-specific methods for the fullscreen API.\n     *\n     * @type {Object}\n     * @see [Specification]{@link https://fullscreen.spec.whatwg.org}\n     * @see [Map Approach From Screenfull.js]{@link https://github.com/sindresorhus/screenfull.js}\n     */\n    const FullscreenApi = {\n        prefixed: true\n    };\n\n    // browser API methods\n    const apiMap = [['requestFullscreen', 'exitFullscreen', 'fullscreenElement', 'fullscreenEnabled', 'fullscreenchange', 'fullscreenerror', 'fullscreen'],\n        // WebKit\n        ['webkitRequestFullscreen', 'webkitExitFullscreen', 'webkitFullscreenElement', 'webkitFullscreenEnabled', 'webkitfullscreenchange', 'webkitfullscreenerror', '-webkit-full-screen'],\n        // Mozilla\n        ['mozRequestFullScreen', 'mozCancelFullScreen', 'mozFullScreenElement', 'mozFullScreenEnabled', 'mozfullscreenchange', 'mozfullscreenerror', '-moz-full-screen'],\n        // Microsoft\n        ['msRequestFullscreen', 'msExitFullscreen', 'msFullscreenElement', 'msFullscreenEnabled', 'MSFullscreenChange', 'MSFullscreenError', '-ms-fullscreen']];\n    const specApi = apiMap[0];\n    let browserApi;\n\n    // determine the supported set of functions\n    for (let i = 0; i < apiMap.length; i++) {\n        // check for exitFullscreen function\n        if (apiMap[i][1] in document) {\n            browserApi = apiMap[i];\n            break;\n        }\n    }\n\n    // map the browser API names to the spec API names\n    if (browserApi) {\n        for (let i = 0; i < browserApi.length; i++) {\n            FullscreenApi[specApi[i]] = browserApi[i];\n        }\n        FullscreenApi.prefixed = browserApi[0] !== specApi[0];\n    }\n\n    /**\n     * @file create-logger.js\n     * @module create-logger\n     */\n\n        // This is the private tracking variable for the logging history.\n    let history = [];\n\n    /**\n     * Log messages to the console and history based on the type of message\n     *\n     * @private\n     * @param  {string} type\n     *         The name of the console method to use.\n     *\n     * @param  {Array} args\n     *         The arguments to be passed to the matching console method.\n     */\n    const LogByTypeFactory = (name, log) => (type, level, args) => {\n        const lvl = log.levels[level];\n        const lvlRegExp = new RegExp(`^(${lvl})$`);\n        if (type !== 'log') {\n            // Add the type to the front of the message when it's not \"log\".\n            args.unshift(type.toUpperCase() + ':');\n        }\n\n        // Add console prefix after adding to history.\n        args.unshift(name + ':');\n\n        // Add a clone of the args at this point to history.\n        if (history) {\n            history.push([].concat(args));\n\n            // only store 1000 history entries\n            const splice = history.length - 1000;\n            history.splice(0, splice > 0 ? splice : 0);\n        }\n\n        // If there's no console then don't try to output messages, but they will\n        // still be stored in history.\n        if (!window.console) {\n            return;\n        }\n\n        // Was setting these once outside of this function, but containing them\n        // in the function makes it easier to test cases where console doesn't exist\n        // when the module is executed.\n        let fn = window.console[type];\n        if (!fn && type === 'debug') {\n            // Certain browsers don't have support for console.debug. For those, we\n            // should default to the closest comparable log.\n            fn = window.console.info || window.console.log;\n        }\n\n        // Bail out if there's no console or if this type is not allowed by the\n        // current logging level.\n        if (!fn || !lvl || !lvlRegExp.test(type)) {\n            return;\n        }\n        fn[Array.isArray(args) ? 'apply' : 'call'](window.console, args);\n    };\n    function createLogger$1(name) {\n        // This is the private tracking variable for logging level.\n        let level = 'info';\n\n        // the curried logByType bound to the specific log and history\n        let logByType;\n\n        /**\n         * Logs plain debug messages. Similar to `console.log`.\n         *\n         * Due to [limitations](https://github.com/jsdoc3/jsdoc/issues/955#issuecomment-313829149)\n         * of our JSDoc template, we cannot properly document this as both a function\n         * and a namespace, so its function signature is documented here.\n         *\n         * #### Arguments\n         * ##### *args\n         * *[]\n         *\n         * Any combination of values that could be passed to `console.log()`.\n         *\n         * #### Return Value\n         *\n         * `undefined`\n         *\n         * @namespace\n         * @param    {...*} args\n         *           One or more messages or objects that should be logged.\n         */\n        const log = function (...args) {\n            logByType('log', level, args);\n        };\n\n        // This is the logByType helper that the logging methods below use\n        logByType = LogByTypeFactory(name, log);\n\n        /**\n         * Create a new sublogger which chains the old name to the new name.\n         *\n         * For example, doing `videojs.log.createLogger('player')` and then using that logger will log the following:\n         * ```js\n         *  mylogger('foo');\n         *  // > VIDEOJS: player: foo\n         * ```\n         *\n         * @param {string} name\n         *        The name to add call the new logger\n         * @return {Object}\n         */\n        log.createLogger = subname => createLogger$1(name + ': ' + subname);\n\n        /**\n         * Enumeration of available logging levels, where the keys are the level names\n         * and the values are `|`-separated strings containing logging methods allowed\n         * in that logging level. These strings are used to create a regular expression\n         * matching the function name being called.\n         *\n         * Levels provided by Video.js are:\n         *\n         * - `off`: Matches no calls. Any value that can be cast to `false` will have\n         *   this effect. The most restrictive.\n         * - `all`: Matches only Video.js-provided functions (`debug`, `log`,\n         *   `log.warn`, and `log.error`).\n         * - `debug`: Matches `log.debug`, `log`, `log.warn`, and `log.error` calls.\n         * - `info` (default): Matches `log`, `log.warn`, and `log.error` calls.\n         * - `warn`: Matches `log.warn` and `log.error` calls.\n         * - `error`: Matches only `log.error` calls.\n         *\n         * @type {Object}\n         */\n        log.levels = {\n            all: 'debug|log|warn|error',\n            off: '',\n            debug: 'debug|log|warn|error',\n            info: 'log|warn|error',\n            warn: 'warn|error',\n            error: 'error',\n            DEFAULT: level\n        };\n\n        /**\n         * Get or set the current logging level.\n         *\n         * If a string matching a key from {@link module:log.levels} is provided, acts\n         * as a setter.\n         *\n         * @param  {string} [lvl]\n         *         Pass a valid level to set a new logging level.\n         *\n         * @return {string}\n         *         The current logging level.\n         */\n        log.level = lvl => {\n            if (typeof lvl === 'string') {\n                if (!log.levels.hasOwnProperty(lvl)) {\n                    throw new Error(`\"${lvl}\" in not a valid log level`);\n                }\n                level = lvl;\n            }\n            return level;\n        };\n\n        /**\n         * Returns an array containing everything that has been logged to the history.\n         *\n         * This array is a shallow clone of the internal history record. However, its\n         * contents are _not_ cloned; so, mutating objects inside this array will\n         * mutate them in history.\n         *\n         * @return {Array}\n         */\n        log.history = () => history ? [].concat(history) : [];\n\n        /**\n         * Allows you to filter the history by the given logger name\n         *\n         * @param {string} fname\n         *        The name to filter by\n         *\n         * @return {Array}\n         *         The filtered list to return\n         */\n        log.history.filter = fname => {\n            return (history || []).filter(historyItem => {\n                // if the first item in each historyItem includes `fname`, then it's a match\n                return new RegExp(`.*${fname}.*`).test(historyItem[0]);\n            });\n        };\n\n        /**\n         * Clears the internal history tracking, but does not prevent further history\n         * tracking.\n         */\n        log.history.clear = () => {\n            if (history) {\n                history.length = 0;\n            }\n        };\n\n        /**\n         * Disable history tracking if it is currently enabled.\n         */\n        log.history.disable = () => {\n            if (history !== null) {\n                history.length = 0;\n                history = null;\n            }\n        };\n\n        /**\n         * Enable history tracking if it is currently disabled.\n         */\n        log.history.enable = () => {\n            if (history === null) {\n                history = [];\n            }\n        };\n\n        /**\n         * Logs error messages. Similar to `console.error`.\n         *\n         * @param {...*} args\n         *        One or more messages or objects that should be logged as an error\n         */\n        log.error = (...args) => logByType('error', level, args);\n\n        /**\n         * Logs warning messages. Similar to `console.warn`.\n         *\n         * @param {...*} args\n         *        One or more messages or objects that should be logged as a warning.\n         */\n        log.warn = (...args) => logByType('warn', level, args);\n\n        /**\n         * Logs debug messages. Similar to `console.debug`, but may also act as a comparable\n         * log if `console.debug` is not available\n         *\n         * @param {...*} args\n         *        One or more messages or objects that should be logged as debug.\n         */\n        log.debug = (...args) => logByType('debug', level, args);\n        return log;\n    }\n\n    /**\n     * @file log.js\n     * @module log\n     */\n    const log$1 = createLogger$1('VIDEOJS');\n    const createLogger = log$1.createLogger;\n\n    /**\n     * @file obj.js\n     * @module obj\n     */\n\n    /**\n     * @callback obj:EachCallback\n     *\n     * @param {*} value\n     *        The current key for the object that is being iterated over.\n     *\n     * @param {string} key\n     *        The current key-value for object that is being iterated over\n     */\n\n    /**\n     * @callback obj:ReduceCallback\n     *\n     * @param {*} accum\n     *        The value that is accumulating over the reduce loop.\n     *\n     * @param {*} value\n     *        The current key for the object that is being iterated over.\n     *\n     * @param {string} key\n     *        The current key-value for object that is being iterated over\n     *\n     * @return {*}\n     *         The new accumulated value.\n     */\n    const toString$1 = Object.prototype.toString;\n\n    /**\n     * Get the keys of an Object\n     *\n     * @param {Object}\n     *        The Object to get the keys from\n     *\n     * @return {string[]}\n     *         An array of the keys from the object. Returns an empty array if the\n     *         object passed in was invalid or had no keys.\n     *\n     * @private\n     */\n    const keys = function (object) {\n        return isObject$1(object) ? Object.keys(object) : [];\n    };\n\n    /**\n     * Array-like iteration for objects.\n     *\n     * @param {Object} object\n     *        The object to iterate over\n     *\n     * @param {obj:EachCallback} fn\n     *        The callback function which is called for each key in the object.\n     */\n    function each(object, fn) {\n        keys(object).forEach(key => fn(object[key], key));\n    }\n\n    /**\n     * Array-like reduce for objects.\n     *\n     * @param {Object} object\n     *        The Object that you want to reduce.\n     *\n     * @param {Function} fn\n     *         A callback function which is called for each key in the object. It\n     *         receives the accumulated value and the per-iteration value and key\n     *         as arguments.\n     *\n     * @param {*} [initial = 0]\n     *        Starting value\n     *\n     * @return {*}\n     *         The final accumulated value.\n     */\n    function reduce(object, fn, initial = 0) {\n        return keys(object).reduce((accum, key) => fn(accum, object[key], key), initial);\n    }\n\n    /**\n     * Returns whether a value is an object of any kind - including DOM nodes,\n     * arrays, regular expressions, etc. Not functions, though.\n     *\n     * This avoids the gotcha where using `typeof` on a `null` value\n     * results in `'object'`.\n     *\n     * @param  {Object} value\n     * @return {boolean}\n     */\n    function isObject$1(value) {\n        return !!value && typeof value === 'object';\n    }\n\n    /**\n     * Returns whether an object appears to be a \"plain\" object - that is, a\n     * direct instance of `Object`.\n     *\n     * @param  {Object} value\n     * @return {boolean}\n     */\n    function isPlain(value) {\n        return isObject$1(value) && toString$1.call(value) === '[object Object]' && value.constructor === Object;\n    }\n\n    /**\n     * Merge two objects recursively.\n     *\n     * Performs a deep merge like\n     * {@link https://lodash.com/docs/4.17.10#merge|lodash.merge}, but only merges\n     * plain objects (not arrays, elements, or anything else).\n     *\n     * Non-plain object values will be copied directly from the right-most\n     * argument.\n     *\n     * @param   {Object[]} sources\n     *          One or more objects to merge into a new object.\n     *\n     * @return {Object}\n     *          A new object that is the merged result of all sources.\n     */\n    function merge$2(...sources) {\n        const result = {};\n        sources.forEach(source => {\n            if (!source) {\n                return;\n            }\n            each(source, (value, key) => {\n                if (!isPlain(value)) {\n                    result[key] = value;\n                    return;\n                }\n                if (!isPlain(result[key])) {\n                    result[key] = {};\n                }\n                result[key] = merge$2(result[key], value);\n            });\n        });\n        return result;\n    }\n\n    /**\n     * Object.defineProperty but \"lazy\", which means that the value is only set after\n     * it is retrieved the first time, rather than being set right away.\n     *\n     * @param {Object} obj the object to set the property on\n     * @param {string} key the key for the property to set\n     * @param {Function} getValue the function used to get the value when it is needed.\n     * @param {boolean} setter whether a setter should be allowed or not\n     */\n    function defineLazyProperty(obj, key, getValue, setter = true) {\n        const set = value => Object.defineProperty(obj, key, {\n            value,\n            enumerable: true,\n            writable: true\n        });\n        const options = {\n            configurable: true,\n            enumerable: true,\n            get() {\n                const value = getValue();\n                set(value);\n                return value;\n            }\n        };\n        if (setter) {\n            options.set = set;\n        }\n        return Object.defineProperty(obj, key, options);\n    }\n\n    var Obj = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        each: each,\n        reduce: reduce,\n        isObject: isObject$1,\n        isPlain: isPlain,\n        merge: merge$2,\n        defineLazyProperty: defineLazyProperty\n    });\n\n    /**\n     * @file browser.js\n     * @module browser\n     */\n\n    /**\n     * Whether or not this device is an iPod.\n     *\n     * @static\n     * @type {Boolean}\n     */\n    let IS_IPOD = false;\n\n    /**\n     * The detected iOS version - or `null`.\n     *\n     * @static\n     * @type {string|null}\n     */\n    let IOS_VERSION = null;\n\n    /**\n     * Whether or not this is an Android device.\n     *\n     * @static\n     * @type {Boolean}\n     */\n    let IS_ANDROID = false;\n\n    /**\n     * The detected Android version - or `null` if not Android or indeterminable.\n     *\n     * @static\n     * @type {number|string|null}\n     */\n    let ANDROID_VERSION;\n\n    /**\n     * Whether or not this is Mozilla Firefox.\n     *\n     * @static\n     * @type {Boolean}\n     */\n    let IS_FIREFOX = false;\n\n    /**\n     * Whether or not this is Microsoft Edge.\n     *\n     * @static\n     * @type {Boolean}\n     */\n    let IS_EDGE = false;\n\n    /**\n     * Whether or not this is any Chromium Browser\n     *\n     * @static\n     * @type {Boolean}\n     */\n    let IS_CHROMIUM = false;\n\n    /**\n     * Whether or not this is any Chromium browser that is not Edge.\n     *\n     * This will also be `true` for Chrome on iOS, which will have different support\n     * as it is actually Safari under the hood.\n     *\n     * Deprecated, as the behaviour to not match Edge was to prevent Legacy Edge's UA matching.\n     * IS_CHROMIUM should be used instead.\n     * \"Chromium but not Edge\" could be explicitly tested with IS_CHROMIUM && !IS_EDGE\n     *\n     * @static\n     * @deprecated\n     * @type {Boolean}\n     */\n    let IS_CHROME = false;\n\n    /**\n     * The detected Chromium version - or `null`.\n     *\n     * @static\n     * @type {number|null}\n     */\n    let CHROMIUM_VERSION = null;\n\n    /**\n     * The detected Google Chrome version - or `null`.\n     * This has always been the _Chromium_ version, i.e. would return on Chromium Edge.\n     * Deprecated, use CHROMIUM_VERSION instead.\n     *\n     * @static\n     * @deprecated\n     * @type {number|null}\n     */\n    let CHROME_VERSION = null;\n\n    /**\n     * The detected Internet Explorer version - or `null`.\n     *\n     * @static\n     * @deprecated\n     * @type {number|null}\n     */\n    let IE_VERSION = null;\n\n    /**\n     * Whether or not this is desktop Safari.\n     *\n     * @static\n     * @type {Boolean}\n     */\n    let IS_SAFARI = false;\n\n    /**\n     * Whether or not this is a Windows machine.\n     *\n     * @static\n     * @type {Boolean}\n     */\n    let IS_WINDOWS = false;\n\n    /**\n     * Whether or not this device is an iPad.\n     *\n     * @static\n     * @type {Boolean}\n     */\n    let IS_IPAD = false;\n\n    /**\n     * Whether or not this device is an iPhone.\n     *\n     * @static\n     * @type {Boolean}\n     */\n        // The Facebook app's UIWebView identifies as both an iPhone and iPad, so\n        // to identify iPhones, we need to exclude iPads.\n        // http://artsy.github.io/blog/2012/10/18/the-perils-of-ios-user-agent-sniffing/\n    let IS_IPHONE = false;\n\n    /**\n     * Whether or not this device is touch-enabled.\n     *\n     * @static\n     * @const\n     * @type {Boolean}\n     */\n    const TOUCH_ENABLED = Boolean(isReal() && ('ontouchstart' in window || window.navigator.maxTouchPoints || window.DocumentTouch && window.document instanceof window.DocumentTouch));\n    const UAD = window.navigator && window.navigator.userAgentData;\n    if (UAD) {\n        // If userAgentData is present, use it instead of userAgent to avoid warnings\n        // Currently only implemented on Chromium\n        // userAgentData does not expose Android version, so ANDROID_VERSION remains `null`\n\n        IS_ANDROID = UAD.platform === 'Android';\n        IS_EDGE = Boolean(UAD.brands.find(b => b.brand === 'Microsoft Edge'));\n        IS_CHROMIUM = Boolean(UAD.brands.find(b => b.brand === 'Chromium'));\n        IS_CHROME = !IS_EDGE && IS_CHROMIUM;\n        CHROMIUM_VERSION = CHROME_VERSION = (UAD.brands.find(b => b.brand === 'Chromium') || {}).version || null;\n        IS_WINDOWS = UAD.platform === 'Windows';\n    }\n\n    // If the browser is not Chromium, either userAgentData is not present which could be an old Chromium browser,\n    //  or it's a browser that has added userAgentData since that we don't have tests for yet. In either case,\n    // the checks need to be made agiainst the regular userAgent string.\n    if (!IS_CHROMIUM) {\n        const USER_AGENT = window.navigator && window.navigator.userAgent || '';\n        IS_IPOD = /iPod/i.test(USER_AGENT);\n        IOS_VERSION = function () {\n            const match = USER_AGENT.match(/OS (\\d+)_/i);\n            if (match && match[1]) {\n                return match[1];\n            }\n            return null;\n        }();\n        IS_ANDROID = /Android/i.test(USER_AGENT);\n        ANDROID_VERSION = function () {\n            // This matches Android Major.Minor.Patch versions\n            // ANDROID_VERSION is Major.Minor as a Number, if Minor isn't available, then only Major is returned\n            const match = USER_AGENT.match(/Android (\\d+)(?:\\.(\\d+))?(?:\\.(\\d+))*/i);\n            if (!match) {\n                return null;\n            }\n            const major = match[1] && parseFloat(match[1]);\n            const minor = match[2] && parseFloat(match[2]);\n            if (major && minor) {\n                return parseFloat(match[1] + '.' + match[2]);\n            } else if (major) {\n                return major;\n            }\n            return null;\n        }();\n        IS_FIREFOX = /Firefox/i.test(USER_AGENT);\n        IS_EDGE = /Edg/i.test(USER_AGENT);\n        IS_CHROMIUM = /Chrome/i.test(USER_AGENT) || /CriOS/i.test(USER_AGENT);\n        IS_CHROME = !IS_EDGE && IS_CHROMIUM;\n        CHROMIUM_VERSION = CHROME_VERSION = function () {\n            const match = USER_AGENT.match(/(Chrome|CriOS)\\/(\\d+)/);\n            if (match && match[2]) {\n                return parseFloat(match[2]);\n            }\n            return null;\n        }();\n        IE_VERSION = function () {\n            const result = /MSIE\\s(\\d+)\\.\\d/.exec(USER_AGENT);\n            let version = result && parseFloat(result[1]);\n            if (!version && /Trident\\/7.0/i.test(USER_AGENT) && /rv:11.0/.test(USER_AGENT)) {\n                // IE 11 has a different user agent string than other IE versions\n                version = 11.0;\n            }\n            return version;\n        }();\n        IS_SAFARI = /Safari/i.test(USER_AGENT) && !IS_CHROME && !IS_ANDROID && !IS_EDGE;\n        IS_WINDOWS = /Windows/i.test(USER_AGENT);\n        IS_IPAD = /iPad/i.test(USER_AGENT) || IS_SAFARI && TOUCH_ENABLED && !/iPhone/i.test(USER_AGENT);\n        IS_IPHONE = /iPhone/i.test(USER_AGENT) && !IS_IPAD;\n    }\n\n    /**\n     * Whether or not this is an iOS device.\n     *\n     * @static\n     * @const\n     * @type {Boolean}\n     */\n    const IS_IOS = IS_IPHONE || IS_IPAD || IS_IPOD;\n\n    /**\n     * Whether or not this is any flavor of Safari - including iOS.\n     *\n     * @static\n     * @const\n     * @type {Boolean}\n     */\n    const IS_ANY_SAFARI = (IS_SAFARI || IS_IOS) && !IS_CHROME;\n\n    var browser = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        get IS_IPOD () { return IS_IPOD; },\n        get IOS_VERSION () { return IOS_VERSION; },\n        get IS_ANDROID () { return IS_ANDROID; },\n        get ANDROID_VERSION () { return ANDROID_VERSION; },\n        get IS_FIREFOX () { return IS_FIREFOX; },\n        get IS_EDGE () { return IS_EDGE; },\n        get IS_CHROMIUM () { return IS_CHROMIUM; },\n        get IS_CHROME () { return IS_CHROME; },\n        get CHROMIUM_VERSION () { return CHROMIUM_VERSION; },\n        get CHROME_VERSION () { return CHROME_VERSION; },\n        get IE_VERSION () { return IE_VERSION; },\n        get IS_SAFARI () { return IS_SAFARI; },\n        get IS_WINDOWS () { return IS_WINDOWS; },\n        get IS_IPAD () { return IS_IPAD; },\n        get IS_IPHONE () { return IS_IPHONE; },\n        TOUCH_ENABLED: TOUCH_ENABLED,\n        IS_IOS: IS_IOS,\n        IS_ANY_SAFARI: IS_ANY_SAFARI\n    });\n\n    /**\n     * @file dom.js\n     * @module dom\n     */\n\n    /**\n     * Detect if a value is a string with any non-whitespace characters.\n     *\n     * @private\n     * @param  {string} str\n     *         The string to check\n     *\n     * @return {boolean}\n     *         Will be `true` if the string is non-blank, `false` otherwise.\n     *\n     */\n    function isNonBlankString(str) {\n        // we use str.trim as it will trim any whitespace characters\n        // from the front or back of non-whitespace characters. aka\n        // Any string that contains non-whitespace characters will\n        // still contain them after `trim` but whitespace only strings\n        // will have a length of 0, failing this check.\n        return typeof str === 'string' && Boolean(str.trim());\n    }\n\n    /**\n     * Throws an error if the passed string has whitespace. This is used by\n     * class methods to be relatively consistent with the classList API.\n     *\n     * @private\n     * @param  {string} str\n     *         The string to check for whitespace.\n     *\n     * @throws {Error}\n     *         Throws an error if there is whitespace in the string.\n     */\n    function throwIfWhitespace(str) {\n        // str.indexOf instead of regex because str.indexOf is faster performance wise.\n        if (str.indexOf(' ') >= 0) {\n            throw new Error('class has illegal whitespace characters');\n        }\n    }\n\n    /**\n     * Whether the current DOM interface appears to be real (i.e. not simulated).\n     *\n     * @return {boolean}\n     *         Will be `true` if the DOM appears to be real, `false` otherwise.\n     */\n    function isReal() {\n        // Both document and window will never be undefined thanks to `global`.\n        return document === window.document;\n    }\n\n    /**\n     * Determines, via duck typing, whether or not a value is a DOM element.\n     *\n     * @param  {*} value\n     *         The value to check.\n     *\n     * @return {boolean}\n     *         Will be `true` if the value is a DOM element, `false` otherwise.\n     */\n    function isEl(value) {\n        return isObject$1(value) && value.nodeType === 1;\n    }\n\n    /**\n     * Determines if the current DOM is embedded in an iframe.\n     *\n     * @return {boolean}\n     *         Will be `true` if the DOM is embedded in an iframe, `false`\n     *         otherwise.\n     */\n    function isInFrame() {\n        // We need a try/catch here because Safari will throw errors when attempting\n        // to get either `parent` or `self`\n        try {\n            return window.parent !== window.self;\n        } catch (x) {\n            return true;\n        }\n    }\n\n    /**\n     * Creates functions to query the DOM using a given method.\n     *\n     * @private\n     * @param   {string} method\n     *          The method to create the query with.\n     *\n     * @return  {Function}\n     *          The query method\n     */\n    function createQuerier(method) {\n        return function (selector, context) {\n            if (!isNonBlankString(selector)) {\n                return document[method](null);\n            }\n            if (isNonBlankString(context)) {\n                context = document.querySelector(context);\n            }\n            const ctx = isEl(context) ? context : document;\n            return ctx[method] && ctx[method](selector);\n        };\n    }\n\n    /**\n     * Creates an element and applies properties, attributes, and inserts content.\n     *\n     * @param  {string} [tagName='div']\n     *         Name of tag to be created.\n     *\n     * @param  {Object} [properties={}]\n     *         Element properties to be applied.\n     *\n     * @param  {Object} [attributes={}]\n     *         Element attributes to be applied.\n     *\n     * @param {ContentDescriptor} [content]\n     *        A content descriptor object.\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n    function createEl(tagName = 'div', properties = {}, attributes = {}, content) {\n        const el = document.createElement(tagName);\n        Object.getOwnPropertyNames(properties).forEach(function (propName) {\n            const val = properties[propName];\n\n            // Handle textContent since it's not supported everywhere and we have a\n            // method for it.\n            if (propName === 'textContent') {\n                textContent(el, val);\n            } else if (el[propName] !== val || propName === 'tabIndex') {\n                el[propName] = val;\n            }\n        });\n        Object.getOwnPropertyNames(attributes).forEach(function (attrName) {\n            el.setAttribute(attrName, attributes[attrName]);\n        });\n        if (content) {\n            appendContent(el, content);\n        }\n        return el;\n    }\n\n    /**\n     * Injects text into an element, replacing any existing contents entirely.\n     *\n     * @param  {Element} el\n     *         The element to add text content into\n     *\n     * @param  {string} text\n     *         The text content to add.\n     *\n     * @return {Element}\n     *         The element with added text content.\n     */\n    function textContent(el, text) {\n        if (typeof el.textContent === 'undefined') {\n            el.innerText = text;\n        } else {\n            el.textContent = text;\n        }\n        return el;\n    }\n\n    /**\n     * Insert an element as the first child node of another\n     *\n     * @param {Element} child\n     *        Element to insert\n     *\n     * @param {Element} parent\n     *        Element to insert child into\n     */\n    function prependTo(child, parent) {\n        if (parent.firstChild) {\n            parent.insertBefore(child, parent.firstChild);\n        } else {\n            parent.appendChild(child);\n        }\n    }\n\n    /**\n     * Check if an element has a class name.\n     *\n     * @param  {Element} element\n     *         Element to check\n     *\n     * @param  {string} classToCheck\n     *         Class name to check for\n     *\n     * @return {boolean}\n     *         Will be `true` if the element has a class, `false` otherwise.\n     *\n     * @throws {Error}\n     *         Throws an error if `classToCheck` has white space.\n     */\n    function hasClass(element, classToCheck) {\n        throwIfWhitespace(classToCheck);\n        return element.classList.contains(classToCheck);\n    }\n\n    /**\n     * Add a class name to an element.\n     *\n     * @param  {Element} element\n     *         Element to add class name to.\n     *\n     * @param  {...string} classesToAdd\n     *         One or more class name to add.\n     *\n     * @return {Element}\n     *         The DOM element with the added class name.\n     */\n    function addClass(element, ...classesToAdd) {\n        element.classList.add(...classesToAdd.reduce((prev, current) => prev.concat(current.split(/\\s+/)), []));\n        return element;\n    }\n\n    /**\n     * Remove a class name from an element.\n     *\n     * @param  {Element} element\n     *         Element to remove a class name from.\n     *\n     * @param  {...string} classesToRemove\n     *         One or more class name to remove.\n     *\n     * @return {Element}\n     *         The DOM element with class name removed.\n     */\n    function removeClass(element, ...classesToRemove) {\n        // Protect in case the player gets disposed\n        if (!element) {\n            log$1.warn(\"removeClass was called with an element that doesn't exist\");\n            return null;\n        }\n        element.classList.remove(...classesToRemove.reduce((prev, current) => prev.concat(current.split(/\\s+/)), []));\n        return element;\n    }\n\n    /**\n     * The callback definition for toggleClass.\n     *\n     * @callback module:dom~PredicateCallback\n     * @param    {Element} element\n     *           The DOM element of the Component.\n     *\n     * @param    {string} classToToggle\n     *           The `className` that wants to be toggled\n     *\n     * @return   {boolean|undefined}\n     *           If `true` is returned, the `classToToggle` will be added to the\n     *           `element`. If `false`, the `classToToggle` will be removed from\n     *           the `element`. If `undefined`, the callback will be ignored.\n     */\n\n    /**\n     * Adds or removes a class name to/from an element depending on an optional\n     * condition or the presence/absence of the class name.\n     *\n     * @param  {Element} element\n     *         The element to toggle a class name on.\n     *\n     * @param  {string} classToToggle\n     *         The class that should be toggled.\n     *\n     * @param  {boolean|module:dom~PredicateCallback} [predicate]\n     *         See the return value for {@link module:dom~PredicateCallback}\n     *\n     * @return {Element}\n     *         The element with a class that has been toggled.\n     */\n    function toggleClass(element, classToToggle, predicate) {\n        if (typeof predicate === 'function') {\n            predicate = predicate(element, classToToggle);\n        }\n        if (typeof predicate !== 'boolean') {\n            predicate = undefined;\n        }\n        classToToggle.split(/\\s+/).forEach(className => element.classList.toggle(className, predicate));\n        return element;\n    }\n\n    /**\n     * Apply attributes to an HTML element.\n     *\n     * @param {Element} el\n     *        Element to add attributes to.\n     *\n     * @param {Object} [attributes]\n     *        Attributes to be applied.\n     */\n    function setAttributes(el, attributes) {\n        Object.getOwnPropertyNames(attributes).forEach(function (attrName) {\n            const attrValue = attributes[attrName];\n            if (attrValue === null || typeof attrValue === 'undefined' || attrValue === false) {\n                el.removeAttribute(attrName);\n            } else {\n                el.setAttribute(attrName, attrValue === true ? '' : attrValue);\n            }\n        });\n    }\n\n    /**\n     * Get an element's attribute values, as defined on the HTML tag.\n     *\n     * Attributes are not the same as properties. They're defined on the tag\n     * or with setAttribute.\n     *\n     * @param  {Element} tag\n     *         Element from which to get tag attributes.\n     *\n     * @return {Object}\n     *         All attributes of the element. Boolean attributes will be `true` or\n     *         `false`, others will be strings.\n     */\n    function getAttributes(tag) {\n        const obj = {};\n\n        // known boolean attributes\n        // we can check for matching boolean properties, but not all browsers\n        // and not all tags know about these attributes, so, we still want to check them manually\n        const knownBooleans = ',' + 'autoplay,controls,playsinline,loop,muted,default,defaultMuted' + ',';\n        if (tag && tag.attributes && tag.attributes.length > 0) {\n            const attrs = tag.attributes;\n            for (let i = attrs.length - 1; i >= 0; i--) {\n                const attrName = attrs[i].name;\n                let attrVal = attrs[i].value;\n\n                // check for known booleans\n                // the matching element property will return a value for typeof\n                if (typeof tag[attrName] === 'boolean' || knownBooleans.indexOf(',' + attrName + ',') !== -1) {\n                    // the value of an included boolean attribute is typically an empty\n                    // string ('') which would equal false if we just check for a false value.\n                    // we also don't want support bad code like autoplay='false'\n                    attrVal = attrVal !== null ? true : false;\n                }\n                obj[attrName] = attrVal;\n            }\n        }\n        return obj;\n    }\n\n    /**\n     * Get the value of an element's attribute.\n     *\n     * @param {Element} el\n     *        A DOM element.\n     *\n     * @param {string} attribute\n     *        Attribute to get the value of.\n     *\n     * @return {string}\n     *         The value of the attribute.\n     */\n    function getAttribute(el, attribute) {\n        return el.getAttribute(attribute);\n    }\n\n    /**\n     * Set the value of an element's attribute.\n     *\n     * @param {Element} el\n     *        A DOM element.\n     *\n     * @param {string} attribute\n     *        Attribute to set.\n     *\n     * @param {string} value\n     *        Value to set the attribute to.\n     */\n    function setAttribute(el, attribute, value) {\n        el.setAttribute(attribute, value);\n    }\n\n    /**\n     * Remove an element's attribute.\n     *\n     * @param {Element} el\n     *        A DOM element.\n     *\n     * @param {string} attribute\n     *        Attribute to remove.\n     */\n    function removeAttribute(el, attribute) {\n        el.removeAttribute(attribute);\n    }\n\n    /**\n     * Attempt to block the ability to select text.\n     */\n    function blockTextSelection() {\n        document.body.focus();\n        document.onselectstart = function () {\n            return false;\n        };\n    }\n\n    /**\n     * Turn off text selection blocking.\n     */\n    function unblockTextSelection() {\n        document.onselectstart = function () {\n            return true;\n        };\n    }\n\n    /**\n     * Identical to the native `getBoundingClientRect` function, but ensures that\n     * the method is supported at all (it is in all browsers we claim to support)\n     * and that the element is in the DOM before continuing.\n     *\n     * This wrapper function also shims properties which are not provided by some\n     * older browsers (namely, IE8).\n     *\n     * Additionally, some browsers do not support adding properties to a\n     * `ClientRect`/`DOMRect` object; so, we shallow-copy it with the standard\n     * properties (except `x` and `y` which are not widely supported). This helps\n     * avoid implementations where keys are non-enumerable.\n     *\n     * @param  {Element} el\n     *         Element whose `ClientRect` we want to calculate.\n     *\n     * @return {Object|undefined}\n     *         Always returns a plain object - or `undefined` if it cannot.\n     */\n    function getBoundingClientRect(el) {\n        if (el && el.getBoundingClientRect && el.parentNode) {\n            const rect = el.getBoundingClientRect();\n            const result = {};\n            ['bottom', 'height', 'left', 'right', 'top', 'width'].forEach(k => {\n                if (rect[k] !== undefined) {\n                    result[k] = rect[k];\n                }\n            });\n            if (!result.height) {\n                result.height = parseFloat(computedStyle(el, 'height'));\n            }\n            if (!result.width) {\n                result.width = parseFloat(computedStyle(el, 'width'));\n            }\n            return result;\n        }\n    }\n\n    /**\n     * Represents the position of a DOM element on the page.\n     *\n     * @typedef  {Object} module:dom~Position\n     *\n     * @property {number} left\n     *           Pixels to the left.\n     *\n     * @property {number} top\n     *           Pixels from the top.\n     */\n\n    /**\n     * Get the position of an element in the DOM.\n     *\n     * Uses `getBoundingClientRect` technique from John Resig.\n     *\n     * @see http://ejohn.org/blog/getboundingclientrect-is-awesome/\n     *\n     * @param  {Element} el\n     *         Element from which to get offset.\n     *\n     * @return {module:dom~Position}\n     *         The position of the element that was passed in.\n     */\n    function findPosition(el) {\n        if (!el || el && !el.offsetParent) {\n            return {\n                left: 0,\n                top: 0,\n                width: 0,\n                height: 0\n            };\n        }\n        const width = el.offsetWidth;\n        const height = el.offsetHeight;\n        let left = 0;\n        let top = 0;\n        while (el.offsetParent && el !== document[FullscreenApi.fullscreenElement]) {\n            left += el.offsetLeft;\n            top += el.offsetTop;\n            el = el.offsetParent;\n        }\n        return {\n            left,\n            top,\n            width,\n            height\n        };\n    }\n\n    /**\n     * Represents x and y coordinates for a DOM element or mouse pointer.\n     *\n     * @typedef  {Object} module:dom~Coordinates\n     *\n     * @property {number} x\n     *           x coordinate in pixels\n     *\n     * @property {number} y\n     *           y coordinate in pixels\n     */\n\n    /**\n     * Get the pointer position within an element.\n     *\n     * The base on the coordinates are the bottom left of the element.\n     *\n     * @param  {Element} el\n     *         Element on which to get the pointer position on.\n     *\n     * @param  {Event} event\n     *         Event object.\n     *\n     * @return {module:dom~Coordinates}\n     *         A coordinates object corresponding to the mouse position.\n     *\n     */\n    function getPointerPosition(el, event) {\n        const translated = {\n            x: 0,\n            y: 0\n        };\n        if (IS_IOS) {\n            let item = el;\n            while (item && item.nodeName.toLowerCase() !== 'html') {\n                const transform = computedStyle(item, 'transform');\n                if (/^matrix/.test(transform)) {\n                    const values = transform.slice(7, -1).split(/,\\s/).map(Number);\n                    translated.x += values[4];\n                    translated.y += values[5];\n                } else if (/^matrix3d/.test(transform)) {\n                    const values = transform.slice(9, -1).split(/,\\s/).map(Number);\n                    translated.x += values[12];\n                    translated.y += values[13];\n                }\n                item = item.parentNode;\n            }\n        }\n        const position = {};\n        const boxTarget = findPosition(event.target);\n        const box = findPosition(el);\n        const boxW = box.width;\n        const boxH = box.height;\n        let offsetY = event.offsetY - (box.top - boxTarget.top);\n        let offsetX = event.offsetX - (box.left - boxTarget.left);\n        if (event.changedTouches) {\n            offsetX = event.changedTouches[0].pageX - box.left;\n            offsetY = event.changedTouches[0].pageY + box.top;\n            if (IS_IOS) {\n                offsetX -= translated.x;\n                offsetY -= translated.y;\n            }\n        }\n        position.y = 1 - Math.max(0, Math.min(1, offsetY / boxH));\n        position.x = Math.max(0, Math.min(1, offsetX / boxW));\n        return position;\n    }\n\n    /**\n     * Determines, via duck typing, whether or not a value is a text node.\n     *\n     * @param  {*} value\n     *         Check if this value is a text node.\n     *\n     * @return {boolean}\n     *         Will be `true` if the value is a text node, `false` otherwise.\n     */\n    function isTextNode$1(value) {\n        return isObject$1(value) && value.nodeType === 3;\n    }\n\n    /**\n     * Empties the contents of an element.\n     *\n     * @param  {Element} el\n     *         The element to empty children from\n     *\n     * @return {Element}\n     *         The element with no children\n     */\n    function emptyEl(el) {\n        while (el.firstChild) {\n            el.removeChild(el.firstChild);\n        }\n        return el;\n    }\n\n    /**\n     * This is a mixed value that describes content to be injected into the DOM\n     * via some method. It can be of the following types:\n     *\n     * Type       | Description\n     * -----------|-------------\n     * `string`   | The value will be normalized into a text node.\n     * `Element`  | The value will be accepted as-is.\n     * `Text`     | A TextNode. The value will be accepted as-is.\n     * `Array`    | A one-dimensional array of strings, elements, text nodes, or functions. These functions should return a string, element, or text node (any other return value, like an array, will be ignored).\n     * `Function` | A function, which is expected to return a string, element, text node, or array - any of the other possible values described above. This means that a content descriptor could be a function that returns an array of functions, but those second-level functions must return strings, elements, or text nodes.\n     *\n     * @typedef {string|Element|Text|Array|Function} ContentDescriptor\n     */\n\n    /**\n     * Normalizes content for eventual insertion into the DOM.\n     *\n     * This allows a wide range of content definition methods, but helps protect\n     * from falling into the trap of simply writing to `innerHTML`, which could\n     * be an XSS concern.\n     *\n     * The content for an element can be passed in multiple types and\n     * combinations, whose behavior is as follows:\n     *\n     * @param {ContentDescriptor} content\n     *        A content descriptor value.\n     *\n     * @return {Array}\n     *         All of the content that was passed in, normalized to an array of\n     *         elements or text nodes.\n     */\n    function normalizeContent(content) {\n        // First, invoke content if it is a function. If it produces an array,\n        // that needs to happen before normalization.\n        if (typeof content === 'function') {\n            content = content();\n        }\n\n        // Next up, normalize to an array, so one or many items can be normalized,\n        // filtered, and returned.\n        return (Array.isArray(content) ? content : [content]).map(value => {\n            // First, invoke value if it is a function to produce a new value,\n            // which will be subsequently normalized to a Node of some kind.\n            if (typeof value === 'function') {\n                value = value();\n            }\n            if (isEl(value) || isTextNode$1(value)) {\n                return value;\n            }\n            if (typeof value === 'string' && /\\S/.test(value)) {\n                return document.createTextNode(value);\n            }\n        }).filter(value => value);\n    }\n\n    /**\n     * Normalizes and appends content to an element.\n     *\n     * @param  {Element} el\n     *         Element to append normalized content to.\n     *\n     * @param {ContentDescriptor} content\n     *        A content descriptor value.\n     *\n     * @return {Element}\n     *         The element with appended normalized content.\n     */\n    function appendContent(el, content) {\n        normalizeContent(content).forEach(node => el.appendChild(node));\n        return el;\n    }\n\n    /**\n     * Normalizes and inserts content into an element; this is identical to\n     * `appendContent()`, except it empties the element first.\n     *\n     * @param {Element} el\n     *        Element to insert normalized content into.\n     *\n     * @param {ContentDescriptor} content\n     *        A content descriptor value.\n     *\n     * @return {Element}\n     *         The element with inserted normalized content.\n     */\n    function insertContent(el, content) {\n        return appendContent(emptyEl(el), content);\n    }\n\n    /**\n     * Check if an event was a single left click.\n     *\n     * @param  {Event} event\n     *         Event object.\n     *\n     * @return {boolean}\n     *         Will be `true` if a single left click, `false` otherwise.\n     */\n    function isSingleLeftClick(event) {\n        // Note: if you create something draggable, be sure to\n        // call it on both `mousedown` and `mousemove` event,\n        // otherwise `mousedown` should be enough for a button\n\n        if (event.button === undefined && event.buttons === undefined) {\n            // Why do we need `buttons` ?\n            // Because, middle mouse sometimes have this:\n            // e.button === 0 and e.buttons === 4\n            // Furthermore, we want to prevent combination click, something like\n            // HOLD middlemouse then left click, that would be\n            // e.button === 0, e.buttons === 5\n            // just `button` is not gonna work\n\n            // Alright, then what this block does ?\n            // this is for chrome `simulate mobile devices`\n            // I want to support this as well\n\n            return true;\n        }\n        if (event.button === 0 && event.buttons === undefined) {\n            // Touch screen, sometimes on some specific device, `buttons`\n            // doesn't have anything (safari on ios, blackberry...)\n\n            return true;\n        }\n\n        // `mouseup` event on a single left click has\n        // `button` and `buttons` equal to 0\n        if (event.type === 'mouseup' && event.button === 0 && event.buttons === 0) {\n            return true;\n        }\n        if (event.button !== 0 || event.buttons !== 1) {\n            // This is the reason we have those if else block above\n            // if any special case we can catch and let it slide\n            // we do it above, when get to here, this definitely\n            // is-not-left-click\n\n            return false;\n        }\n        return true;\n    }\n\n    /**\n     * Finds a single DOM element matching `selector` within the optional\n     * `context` of another DOM element (defaulting to `document`).\n     *\n     * @param  {string} selector\n     *         A valid CSS selector, which will be passed to `querySelector`.\n     *\n     * @param  {Element|String} [context=document]\n     *         A DOM element within which to query. Can also be a selector\n     *         string in which case the first matching element will be used\n     *         as context. If missing (or no element matches selector), falls\n     *         back to `document`.\n     *\n     * @return {Element|null}\n     *         The element that was found or null.\n     */\n    const $ = createQuerier('querySelector');\n\n    /**\n     * Finds a all DOM elements matching `selector` within the optional\n     * `context` of another DOM element (defaulting to `document`).\n     *\n     * @param  {string} selector\n     *         A valid CSS selector, which will be passed to `querySelectorAll`.\n     *\n     * @param  {Element|String} [context=document]\n     *         A DOM element within which to query. Can also be a selector\n     *         string in which case the first matching element will be used\n     *         as context. If missing (or no element matches selector), falls\n     *         back to `document`.\n     *\n     * @return {NodeList}\n     *         A element list of elements that were found. Will be empty if none\n     *         were found.\n     *\n     */\n    const $$ = createQuerier('querySelectorAll');\n\n    /**\n     * A safe getComputedStyle.\n     *\n     * This is needed because in Firefox, if the player is loaded in an iframe with\n     * `display:none`, then `getComputedStyle` returns `null`, so, we do a\n     * null-check to make sure that the player doesn't break in these cases.\n     *\n     * @param    {Element} el\n     *           The element you want the computed style of\n     *\n     * @param    {string} prop\n     *           The property name you want\n     *\n     * @see      https://bugzilla.mozilla.org/show_bug.cgi?id=548397\n     */\n    function computedStyle(el, prop) {\n        if (!el || !prop) {\n            return '';\n        }\n        if (typeof window.getComputedStyle === 'function') {\n            let computedStyleValue;\n            try {\n                computedStyleValue = window.getComputedStyle(el);\n            } catch (e) {\n                return '';\n            }\n            return computedStyleValue ? computedStyleValue.getPropertyValue(prop) || computedStyleValue[prop] : '';\n        }\n        return '';\n    }\n\n    var Dom = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        isReal: isReal,\n        isEl: isEl,\n        isInFrame: isInFrame,\n        createEl: createEl,\n        textContent: textContent,\n        prependTo: prependTo,\n        hasClass: hasClass,\n        addClass: addClass,\n        removeClass: removeClass,\n        toggleClass: toggleClass,\n        setAttributes: setAttributes,\n        getAttributes: getAttributes,\n        getAttribute: getAttribute,\n        setAttribute: setAttribute,\n        removeAttribute: removeAttribute,\n        blockTextSelection: blockTextSelection,\n        unblockTextSelection: unblockTextSelection,\n        getBoundingClientRect: getBoundingClientRect,\n        findPosition: findPosition,\n        getPointerPosition: getPointerPosition,\n        isTextNode: isTextNode$1,\n        emptyEl: emptyEl,\n        normalizeContent: normalizeContent,\n        appendContent: appendContent,\n        insertContent: insertContent,\n        isSingleLeftClick: isSingleLeftClick,\n        $: $,\n        $$: $$,\n        computedStyle: computedStyle\n    });\n\n    /**\n     * @file setup.js - Functions for setting up a player without\n     * user interaction based on the data-setup `attribute` of the video tag.\n     *\n     * @module setup\n     */\n    let _windowLoaded = false;\n    let videojs$1;\n\n    /**\n     * Set up any tags that have a data-setup `attribute` when the player is started.\n     */\n    const autoSetup = function () {\n        if (videojs$1.options.autoSetup === false) {\n            return;\n        }\n        const vids = Array.prototype.slice.call(document.getElementsByTagName('video'));\n        const audios = Array.prototype.slice.call(document.getElementsByTagName('audio'));\n        const divs = Array.prototype.slice.call(document.getElementsByTagName('video-js'));\n        const mediaEls = vids.concat(audios, divs);\n\n        // Check if any media elements exist\n        if (mediaEls && mediaEls.length > 0) {\n            for (let i = 0, e = mediaEls.length; i < e; i++) {\n                const mediaEl = mediaEls[i];\n\n                // Check if element exists, has getAttribute func.\n                if (mediaEl && mediaEl.getAttribute) {\n                    // Make sure this player hasn't already been set up.\n                    if (mediaEl.player === undefined) {\n                        const options = mediaEl.getAttribute('data-setup');\n\n                        // Check if data-setup attr exists.\n                        // We only auto-setup if they've added the data-setup attr.\n                        if (options !== null) {\n                            // Create new video.js instance.\n                            videojs$1(mediaEl);\n                        }\n                    }\n\n                    // If getAttribute isn't defined, we need to wait for the DOM.\n                } else {\n                    autoSetupTimeout(1);\n                    break;\n                }\n            }\n\n            // No videos were found, so keep looping unless page is finished loading.\n        } else if (!_windowLoaded) {\n            autoSetupTimeout(1);\n        }\n    };\n\n    /**\n     * Wait until the page is loaded before running autoSetup. This will be called in\n     * autoSetup if `hasLoaded` returns false.\n     *\n     * @param {number} wait\n     *        How long to wait in ms\n     *\n     * @param {module:videojs} [vjs]\n     *        The videojs library function\n     */\n    function autoSetupTimeout(wait, vjs) {\n        // Protect against breakage in non-browser environments\n        if (!isReal()) {\n            return;\n        }\n        if (vjs) {\n            videojs$1 = vjs;\n        }\n        window.setTimeout(autoSetup, wait);\n    }\n\n    /**\n     * Used to set the internal tracking of window loaded state to true.\n     *\n     * @private\n     */\n    function setWindowLoaded() {\n        _windowLoaded = true;\n        window.removeEventListener('load', setWindowLoaded);\n    }\n    if (isReal()) {\n        if (document.readyState === 'complete') {\n            setWindowLoaded();\n        } else {\n            /**\n             * Listen for the load event on window, and set _windowLoaded to true.\n             *\n             * We use a standard event listener here to avoid incrementing the GUID\n             * before any players are created.\n             *\n             * @listens load\n             */\n            window.addEventListener('load', setWindowLoaded);\n        }\n    }\n\n    /**\n     * @file stylesheet.js\n     * @module stylesheet\n     */\n\n    /**\n     * Create a DOM style element given a className for it.\n     *\n     * @param {string} className\n     *        The className to add to the created style element.\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n    const createStyleElement = function (className) {\n        const style = document.createElement('style');\n        style.className = className;\n        return style;\n    };\n\n    /**\n     * Add text to a DOM element.\n     *\n     * @param {Element} el\n     *        The Element to add text content to.\n     *\n     * @param {string} content\n     *        The text to add to the element.\n     */\n    const setTextContent = function (el, content) {\n        if (el.styleSheet) {\n            el.styleSheet.cssText = content;\n        } else {\n            el.textContent = content;\n        }\n    };\n\n    /**\n     * @file dom-data.js\n     * @module dom-data\n     */\n\n    /**\n     * Element Data Store.\n     *\n     * Allows for binding data to an element without putting it directly on the\n     * element. Ex. Event listeners are stored here.\n     * (also from jsninja.com, slightly modified and updated for closure compiler)\n     *\n     * @type {Object}\n     * @private\n     */\n    var DomData = new WeakMap();\n\n    /**\n     * @file guid.js\n     * @module guid\n     */\n\n        // Default value for GUIDs. This allows us to reset the GUID counter in tests.\n        //\n        // The initial GUID is 3 because some users have come to rely on the first\n        // default player ID ending up as `vjs_video_3`.\n        //\n        // See: https://github.com/videojs/video.js/pull/6216\n    const _initialGuid = 3;\n\n    /**\n     * Unique ID for an element or function\n     *\n     * @type {Number}\n     */\n    let _guid = _initialGuid;\n\n    /**\n     * Get a unique auto-incrementing ID by number that has not been returned before.\n     *\n     * @return {number}\n     *         A new unique ID.\n     */\n    function newGUID() {\n        return _guid++;\n    }\n\n    /**\n     * @file events.js. An Event System (John Resig - Secrets of a JS Ninja http://jsninja.com/)\n     * (Original book version wasn't completely usable, so fixed some things and made Closure Compiler compatible)\n     * This should work very similarly to jQuery's events, however it's based off the book version which isn't as\n     * robust as jquery's, so there's probably some differences.\n     *\n     * @file events.js\n     * @module events\n     */\n\n    /**\n     * Clean up the listener cache and dispatchers\n     *\n     * @param {Element|Object} elem\n     *        Element to clean up\n     *\n     * @param {string} type\n     *        Type of event to clean up\n     */\n    function _cleanUpEvents(elem, type) {\n        if (!DomData.has(elem)) {\n            return;\n        }\n        const data = DomData.get(elem);\n\n        // Remove the events of a particular type if there are none left\n        if (data.handlers[type].length === 0) {\n            delete data.handlers[type];\n            // data.handlers[type] = null;\n            // Setting to null was causing an error with data.handlers\n\n            // Remove the meta-handler from the element\n            if (elem.removeEventListener) {\n                elem.removeEventListener(type, data.dispatcher, false);\n            } else if (elem.detachEvent) {\n                elem.detachEvent('on' + type, data.dispatcher);\n            }\n        }\n\n        // Remove the events object if there are no types left\n        if (Object.getOwnPropertyNames(data.handlers).length <= 0) {\n            delete data.handlers;\n            delete data.dispatcher;\n            delete data.disabled;\n        }\n\n        // Finally remove the element data if there is no data left\n        if (Object.getOwnPropertyNames(data).length === 0) {\n            DomData.delete(elem);\n        }\n    }\n\n    /**\n     * Loops through an array of event types and calls the requested method for each type.\n     *\n     * @param {Function} fn\n     *        The event method we want to use.\n     *\n     * @param {Element|Object} elem\n     *        Element or object to bind listeners to\n     *\n     * @param {string} type\n     *        Type of event to bind to.\n     *\n     * @param {Function} callback\n     *        Event listener.\n     */\n    function _handleMultipleEvents(fn, elem, types, callback) {\n        types.forEach(function (type) {\n            // Call the event method for each one of the types\n            fn(elem, type, callback);\n        });\n    }\n\n    /**\n     * Fix a native event to have standard property values\n     *\n     * @param {Object} event\n     *        Event object to fix.\n     *\n     * @return {Object}\n     *         Fixed event object.\n     */\n    function fixEvent(event) {\n        if (event.fixed_) {\n            return event;\n        }\n        function returnTrue() {\n            return true;\n        }\n        function returnFalse() {\n            return false;\n        }\n\n        // Test if fixing up is needed\n        // Used to check if !event.stopPropagation instead of isPropagationStopped\n        // But native events return true for stopPropagation, but don't have\n        // other expected methods like isPropagationStopped. Seems to be a problem\n        // with the Javascript Ninja code. So we're just overriding all events now.\n        if (!event || !event.isPropagationStopped || !event.isImmediatePropagationStopped) {\n            const old = event || window.event;\n            event = {};\n            // Clone the old object so that we can modify the values event = {};\n            // IE8 Doesn't like when you mess with native event properties\n            // Firefox returns false for event.hasOwnProperty('type') and other props\n            //  which makes copying more difficult.\n            // TODO: Probably best to create a whitelist of event props\n            for (const key in old) {\n                // Safari 6.0.3 warns you if you try to copy deprecated layerX/Y\n                // Chrome warns you if you try to copy deprecated keyboardEvent.keyLocation\n                // and webkitMovementX/Y\n                // Lighthouse complains if Event.path is copied\n                if (key !== 'layerX' && key !== 'layerY' && key !== 'keyLocation' && key !== 'webkitMovementX' && key !== 'webkitMovementY' && key !== 'path') {\n                    // Chrome 32+ warns if you try to copy deprecated returnValue, but\n                    // we still want to if preventDefault isn't supported (IE8).\n                    if (!(key === 'returnValue' && old.preventDefault)) {\n                        event[key] = old[key];\n                    }\n                }\n            }\n\n            // The event occurred on this element\n            if (!event.target) {\n                event.target = event.srcElement || document;\n            }\n\n            // Handle which other element the event is related to\n            if (!event.relatedTarget) {\n                event.relatedTarget = event.fromElement === event.target ? event.toElement : event.fromElement;\n            }\n\n            // Stop the default browser action\n            event.preventDefault = function () {\n                if (old.preventDefault) {\n                    old.preventDefault();\n                }\n                event.returnValue = false;\n                old.returnValue = false;\n                event.defaultPrevented = true;\n            };\n            event.defaultPrevented = false;\n\n            // Stop the event from bubbling\n            event.stopPropagation = function () {\n                if (old.stopPropagation) {\n                    old.stopPropagation();\n                }\n                event.cancelBubble = true;\n                old.cancelBubble = true;\n                event.isPropagationStopped = returnTrue;\n            };\n            event.isPropagationStopped = returnFalse;\n\n            // Stop the event from bubbling and executing other handlers\n            event.stopImmediatePropagation = function () {\n                if (old.stopImmediatePropagation) {\n                    old.stopImmediatePropagation();\n                }\n                event.isImmediatePropagationStopped = returnTrue;\n                event.stopPropagation();\n            };\n            event.isImmediatePropagationStopped = returnFalse;\n\n            // Handle mouse position\n            if (event.clientX !== null && event.clientX !== undefined) {\n                const doc = document.documentElement;\n                const body = document.body;\n                event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc && doc.clientLeft || body && body.clientLeft || 0);\n                event.pageY = event.clientY + (doc && doc.scrollTop || body && body.scrollTop || 0) - (doc && doc.clientTop || body && body.clientTop || 0);\n            }\n\n            // Handle key presses\n            event.which = event.charCode || event.keyCode;\n\n            // Fix button for mouse clicks:\n            // 0 == left; 1 == middle; 2 == right\n            if (event.button !== null && event.button !== undefined) {\n                // The following is disabled because it does not pass videojs-standard\n                // and... yikes.\n                /* eslint-disable */\n                event.button = event.button & 1 ? 0 : event.button & 4 ? 1 : event.button & 2 ? 2 : 0;\n                /* eslint-enable */\n            }\n        }\n\n        event.fixed_ = true;\n        // Returns fixed-up instance\n        return event;\n    }\n\n    /**\n     * Whether passive event listeners are supported\n     */\n    let _supportsPassive;\n    const supportsPassive = function () {\n        if (typeof _supportsPassive !== 'boolean') {\n            _supportsPassive = false;\n            try {\n                const opts = Object.defineProperty({}, 'passive', {\n                    get() {\n                        _supportsPassive = true;\n                    }\n                });\n                window.addEventListener('test', null, opts);\n                window.removeEventListener('test', null, opts);\n            } catch (e) {\n                // disregard\n            }\n        }\n        return _supportsPassive;\n    };\n\n    /**\n     * Touch events Chrome expects to be passive\n     */\n    const passiveEvents = ['touchstart', 'touchmove'];\n\n    /**\n     * Add an event listener to element\n     * It stores the handler function in a separate cache object\n     * and adds a generic handler to the element's event,\n     * along with a unique id (guid) to the element.\n     *\n     * @param {Element|Object} elem\n     *        Element or object to bind listeners to\n     *\n     * @param {string|string[]} type\n     *        Type of event to bind to.\n     *\n     * @param {Function} fn\n     *        Event listener.\n     */\n    function on(elem, type, fn) {\n        if (Array.isArray(type)) {\n            return _handleMultipleEvents(on, elem, type, fn);\n        }\n        if (!DomData.has(elem)) {\n            DomData.set(elem, {});\n        }\n        const data = DomData.get(elem);\n\n        // We need a place to store all our handler data\n        if (!data.handlers) {\n            data.handlers = {};\n        }\n        if (!data.handlers[type]) {\n            data.handlers[type] = [];\n        }\n        if (!fn.guid) {\n            fn.guid = newGUID();\n        }\n        data.handlers[type].push(fn);\n        if (!data.dispatcher) {\n            data.disabled = false;\n            data.dispatcher = function (event, hash) {\n                if (data.disabled) {\n                    return;\n                }\n                event = fixEvent(event);\n                const handlers = data.handlers[event.type];\n                if (handlers) {\n                    // Copy handlers so if handlers are added/removed during the process it doesn't throw everything off.\n                    const handlersCopy = handlers.slice(0);\n                    for (let m = 0, n = handlersCopy.length; m < n; m++) {\n                        if (event.isImmediatePropagationStopped()) {\n                            break;\n                        } else {\n                            try {\n                                handlersCopy[m].call(elem, event, hash);\n                            } catch (e) {\n                                log$1.error(e);\n                            }\n                        }\n                    }\n                }\n            };\n        }\n        if (data.handlers[type].length === 1) {\n            if (elem.addEventListener) {\n                let options = false;\n                if (supportsPassive() && passiveEvents.indexOf(type) > -1) {\n                    options = {\n                        passive: true\n                    };\n                }\n                elem.addEventListener(type, data.dispatcher, options);\n            } else if (elem.attachEvent) {\n                elem.attachEvent('on' + type, data.dispatcher);\n            }\n        }\n    }\n\n    /**\n     * Removes event listeners from an element\n     *\n     * @param {Element|Object} elem\n     *        Object to remove listeners from.\n     *\n     * @param {string|string[]} [type]\n     *        Type of listener to remove. Don't include to remove all events from element.\n     *\n     * @param {Function} [fn]\n     *        Specific listener to remove. Don't include to remove listeners for an event\n     *        type.\n     */\n    function off(elem, type, fn) {\n        // Don't want to add a cache object through getElData if not needed\n        if (!DomData.has(elem)) {\n            return;\n        }\n        const data = DomData.get(elem);\n\n        // If no events exist, nothing to unbind\n        if (!data.handlers) {\n            return;\n        }\n        if (Array.isArray(type)) {\n            return _handleMultipleEvents(off, elem, type, fn);\n        }\n\n        // Utility function\n        const removeType = function (el, t) {\n            data.handlers[t] = [];\n            _cleanUpEvents(el, t);\n        };\n\n        // Are we removing all bound events?\n        if (type === undefined) {\n            for (const t in data.handlers) {\n                if (Object.prototype.hasOwnProperty.call(data.handlers || {}, t)) {\n                    removeType(elem, t);\n                }\n            }\n            return;\n        }\n        const handlers = data.handlers[type];\n\n        // If no handlers exist, nothing to unbind\n        if (!handlers) {\n            return;\n        }\n\n        // If no listener was provided, remove all listeners for type\n        if (!fn) {\n            removeType(elem, type);\n            return;\n        }\n\n        // We're only removing a single handler\n        if (fn.guid) {\n            for (let n = 0; n < handlers.length; n++) {\n                if (handlers[n].guid === fn.guid) {\n                    handlers.splice(n--, 1);\n                }\n            }\n        }\n        _cleanUpEvents(elem, type);\n    }\n\n    /**\n     * Trigger an event for an element\n     *\n     * @param {Element|Object} elem\n     *        Element to trigger an event on\n     *\n     * @param {EventTarget~Event|string} event\n     *        A string (the type) or an event object with a type attribute\n     *\n     * @param {Object} [hash]\n     *        data hash to pass along with the event\n     *\n     * @return {boolean|undefined}\n     *         Returns the opposite of `defaultPrevented` if default was\n     *         prevented. Otherwise, returns `undefined`\n     */\n    function trigger(elem, event, hash) {\n        // Fetches element data and a reference to the parent (for bubbling).\n        // Don't want to add a data object to cache for every parent,\n        // so checking hasElData first.\n        const elemData = DomData.has(elem) ? DomData.get(elem) : {};\n        const parent = elem.parentNode || elem.ownerDocument;\n        // type = event.type || event,\n        // handler;\n\n        // If an event name was passed as a string, creates an event out of it\n        if (typeof event === 'string') {\n            event = {\n                type: event,\n                target: elem\n            };\n        } else if (!event.target) {\n            event.target = elem;\n        }\n\n        // Normalizes the event properties.\n        event = fixEvent(event);\n\n        // If the passed element has a dispatcher, executes the established handlers.\n        if (elemData.dispatcher) {\n            elemData.dispatcher.call(elem, event, hash);\n        }\n\n        // Unless explicitly stopped or the event does not bubble (e.g. media events)\n        // recursively calls this function to bubble the event up the DOM.\n        if (parent && !event.isPropagationStopped() && event.bubbles === true) {\n            trigger.call(null, parent, event, hash);\n\n            // If at the top of the DOM, triggers the default action unless disabled.\n        } else if (!parent && !event.defaultPrevented && event.target && event.target[event.type]) {\n            if (!DomData.has(event.target)) {\n                DomData.set(event.target, {});\n            }\n            const targetData = DomData.get(event.target);\n\n            // Checks if the target has a default action for this event.\n            if (event.target[event.type]) {\n                // Temporarily disables event dispatching on the target as we have already executed the handler.\n                targetData.disabled = true;\n                // Executes the default action.\n                if (typeof event.target[event.type] === 'function') {\n                    event.target[event.type]();\n                }\n                // Re-enables event dispatching.\n                targetData.disabled = false;\n            }\n        }\n\n        // Inform the triggerer if the default was prevented by returning false\n        return !event.defaultPrevented;\n    }\n\n    /**\n     * Trigger a listener only once for an event.\n     *\n     * @param {Element|Object} elem\n     *        Element or object to bind to.\n     *\n     * @param {string|string[]} type\n     *        Name/type of event\n     *\n     * @param {Event~EventListener} fn\n     *        Event listener function\n     */\n    function one(elem, type, fn) {\n        if (Array.isArray(type)) {\n            return _handleMultipleEvents(one, elem, type, fn);\n        }\n        const func = function () {\n            off(elem, type, func);\n            fn.apply(this, arguments);\n        };\n\n        // copy the guid to the new function so it can removed using the original function's ID\n        func.guid = fn.guid = fn.guid || newGUID();\n        on(elem, type, func);\n    }\n\n    /**\n     * Trigger a listener only once and then turn if off for all\n     * configured events\n     *\n     * @param {Element|Object} elem\n     *        Element or object to bind to.\n     *\n     * @param {string|string[]} type\n     *        Name/type of event\n     *\n     * @param {Event~EventListener} fn\n     *        Event listener function\n     */\n    function any(elem, type, fn) {\n        const func = function () {\n            off(elem, type, func);\n            fn.apply(this, arguments);\n        };\n\n        // copy the guid to the new function so it can removed using the original function's ID\n        func.guid = fn.guid = fn.guid || newGUID();\n\n        // multiple ons, but one off for everything\n        on(elem, type, func);\n    }\n\n    var Events = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        fixEvent: fixEvent,\n        on: on,\n        off: off,\n        trigger: trigger,\n        one: one,\n        any: any\n    });\n\n    /**\n     * @file fn.js\n     * @module fn\n     */\n    const UPDATE_REFRESH_INTERVAL = 30;\n\n    /**\n     * A private, internal-only function for changing the context of a function.\n     *\n     * It also stores a unique id on the function so it can be easily removed from\n     * events.\n     *\n     * @private\n     * @function\n     * @param    {*} context\n     *           The object to bind as scope.\n     *\n     * @param    {Function} fn\n     *           The function to be bound to a scope.\n     *\n     * @param    {number} [uid]\n     *           An optional unique ID for the function to be set\n     *\n     * @return   {Function}\n     *           The new function that will be bound into the context given\n     */\n    const bind_ = function (context, fn, uid) {\n        // Make sure the function has a unique ID\n        if (!fn.guid) {\n            fn.guid = newGUID();\n        }\n\n        // Create the new function that changes the context\n        const bound = fn.bind(context);\n\n        // Allow for the ability to individualize this function\n        // Needed in the case where multiple objects might share the same prototype\n        // IF both items add an event listener with the same function, then you try to remove just one\n        // it will remove both because they both have the same guid.\n        // when using this, you need to use the bind method when you remove the listener as well.\n        // currently used in text tracks\n        bound.guid = uid ? uid + '_' + fn.guid : fn.guid;\n        return bound;\n    };\n\n    /**\n     * Wraps the given function, `fn`, with a new function that only invokes `fn`\n     * at most once per every `wait` milliseconds.\n     *\n     * @function\n     * @param    {Function} fn\n     *           The function to be throttled.\n     *\n     * @param    {number}   wait\n     *           The number of milliseconds by which to throttle.\n     *\n     * @return   {Function}\n     */\n    const throttle = function (fn, wait) {\n        let last = window.performance.now();\n        const throttled = function (...args) {\n            const now = window.performance.now();\n            if (now - last >= wait) {\n                fn(...args);\n                last = now;\n            }\n        };\n        return throttled;\n    };\n\n    /**\n     * Creates a debounced function that delays invoking `func` until after `wait`\n     * milliseconds have elapsed since the last time the debounced function was\n     * invoked.\n     *\n     * Inspired by lodash and underscore implementations.\n     *\n     * @function\n     * @param    {Function} func\n     *           The function to wrap with debounce behavior.\n     *\n     * @param    {number} wait\n     *           The number of milliseconds to wait after the last invocation.\n     *\n     * @param    {boolean} [immediate]\n     *           Whether or not to invoke the function immediately upon creation.\n     *\n     * @param    {Object} [context=window]\n     *           The \"context\" in which the debounced function should debounce. For\n     *           example, if this function should be tied to a Video.js player,\n     *           the player can be passed here. Alternatively, defaults to the\n     *           global `window` object.\n     *\n     * @return   {Function}\n     *           A debounced function.\n     */\n    const debounce = function (func, wait, immediate, context = window) {\n        let timeout;\n        const cancel = () => {\n            context.clearTimeout(timeout);\n            timeout = null;\n        };\n\n        /* eslint-disable consistent-this */\n        const debounced = function () {\n            const self = this;\n            const args = arguments;\n            let later = function () {\n                timeout = null;\n                later = null;\n                if (!immediate) {\n                    func.apply(self, args);\n                }\n            };\n            if (!timeout && immediate) {\n                func.apply(self, args);\n            }\n            context.clearTimeout(timeout);\n            timeout = context.setTimeout(later, wait);\n        };\n        /* eslint-enable consistent-this */\n\n        debounced.cancel = cancel;\n        return debounced;\n    };\n\n    var Fn = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        UPDATE_REFRESH_INTERVAL: UPDATE_REFRESH_INTERVAL,\n        bind_: bind_,\n        throttle: throttle,\n        debounce: debounce\n    });\n\n    /**\n     * @file src/js/event-target.js\n     */\n    let EVENT_MAP;\n\n    /**\n     * `EventTarget` is a class that can have the same API as the DOM `EventTarget`. It\n     * adds shorthand functions that wrap around lengthy functions. For example:\n     * the `on` function is a wrapper around `addEventListener`.\n     *\n     * @see [EventTarget Spec]{@link https://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-EventTarget}\n     * @class EventTarget\n     */\n    class EventTarget$2 {\n        /**\n         * Adds an `event listener` to an instance of an `EventTarget`. An `event listener` is a\n         * function that will get called when an event with a certain name gets triggered.\n         *\n         * @param {string|string[]} type\n         *        An event name or an array of event names.\n         *\n         * @param {Function} fn\n         *        The function to call with `EventTarget`s\n         */\n        on(type, fn) {\n            // Remove the addEventListener alias before calling Events.on\n            // so we don't get into an infinite type loop\n            const ael = this.addEventListener;\n            this.addEventListener = () => {};\n            on(this, type, fn);\n            this.addEventListener = ael;\n        }\n        /**\n         * Removes an `event listener` for a specific event from an instance of `EventTarget`.\n         * This makes it so that the `event listener` will no longer get called when the\n         * named event happens.\n         *\n         * @param {string|string[]} type\n         *        An event name or an array of event names.\n         *\n         * @param {Function} fn\n         *        The function to remove.\n         */\n        off(type, fn) {\n            off(this, type, fn);\n        }\n        /**\n         * This function will add an `event listener` that gets triggered only once. After the\n         * first trigger it will get removed. This is like adding an `event listener`\n         * with {@link EventTarget#on} that calls {@link EventTarget#off} on itself.\n         *\n         * @param {string|string[]} type\n         *        An event name or an array of event names.\n         *\n         * @param {Function} fn\n         *        The function to be called once for each event name.\n         */\n        one(type, fn) {\n            // Remove the addEventListener aliasing Events.on\n            // so we don't get into an infinite type loop\n            const ael = this.addEventListener;\n            this.addEventListener = () => {};\n            one(this, type, fn);\n            this.addEventListener = ael;\n        }\n        /**\n         * This function will add an `event listener` that gets triggered only once and is\n         * removed from all events. This is like adding an array of `event listener`s\n         * with {@link EventTarget#on} that calls {@link EventTarget#off} on all events the\n         * first time it is triggered.\n         *\n         * @param {string|string[]} type\n         *        An event name or an array of event names.\n         *\n         * @param {Function} fn\n         *        The function to be called once for each event name.\n         */\n        any(type, fn) {\n            // Remove the addEventListener aliasing Events.on\n            // so we don't get into an infinite type loop\n            const ael = this.addEventListener;\n            this.addEventListener = () => {};\n            any(this, type, fn);\n            this.addEventListener = ael;\n        }\n        /**\n         * This function causes an event to happen. This will then cause any `event listeners`\n         * that are waiting for that event, to get called. If there are no `event listeners`\n         * for an event then nothing will happen.\n         *\n         * If the name of the `Event` that is being triggered is in `EventTarget.allowedEvents_`.\n         * Trigger will also call the `on` + `uppercaseEventName` function.\n         *\n         * Example:\n         * 'click' is in `EventTarget.allowedEvents_`, so, trigger will attempt to call\n         * `onClick` if it exists.\n         *\n         * @param {string|EventTarget~Event|Object} event\n         *        The name of the event, an `Event`, or an object with a key of type set to\n         *        an event name.\n         */\n        trigger(event) {\n            const type = event.type || event;\n\n            // deprecation\n            // In a future version we should default target to `this`\n            // similar to how we default the target to `elem` in\n            // `Events.trigger`. Right now the default `target` will be\n            // `document` due to the `Event.fixEvent` call.\n            if (typeof event === 'string') {\n                event = {\n                    type\n                };\n            }\n            event = fixEvent(event);\n            if (this.allowedEvents_[type] && this['on' + type]) {\n                this['on' + type](event);\n            }\n            trigger(this, event);\n        }\n        queueTrigger(event) {\n            // only set up EVENT_MAP if it'll be used\n            if (!EVENT_MAP) {\n                EVENT_MAP = new Map();\n            }\n            const type = event.type || event;\n            let map = EVENT_MAP.get(this);\n            if (!map) {\n                map = new Map();\n                EVENT_MAP.set(this, map);\n            }\n            const oldTimeout = map.get(type);\n            map.delete(type);\n            window.clearTimeout(oldTimeout);\n            const timeout = window.setTimeout(() => {\n                map.delete(type);\n                // if we cleared out all timeouts for the current target, delete its map\n                if (map.size === 0) {\n                    map = null;\n                    EVENT_MAP.delete(this);\n                }\n                this.trigger(event);\n            }, 0);\n            map.set(type, timeout);\n        }\n    }\n\n    /**\n     * A Custom DOM event.\n     *\n     * @typedef {CustomEvent} Event\n     * @see [Properties]{@link https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent}\n     */\n\n    /**\n     * All event listeners should follow the following format.\n     *\n     * @callback EventTarget~EventListener\n     * @this {EventTarget}\n     *\n     * @param {Event} event\n     *        the event that triggered this function\n     *\n     * @param {Object} [hash]\n     *        hash of data sent during the event\n     */\n\n    /**\n     * An object containing event names as keys and booleans as values.\n     *\n     * > NOTE: If an event name is set to a true value here {@link EventTarget#trigger}\n     *         will have extra functionality. See that function for more information.\n     *\n     * @property EventTarget.prototype.allowedEvents_\n     * @private\n     */\n    EventTarget$2.prototype.allowedEvents_ = {};\n\n    /**\n     * An alias of {@link EventTarget#on}. Allows `EventTarget` to mimic\n     * the standard DOM API.\n     *\n     * @function\n     * @see {@link EventTarget#on}\n     */\n    EventTarget$2.prototype.addEventListener = EventTarget$2.prototype.on;\n\n    /**\n     * An alias of {@link EventTarget#off}. Allows `EventTarget` to mimic\n     * the standard DOM API.\n     *\n     * @function\n     * @see {@link EventTarget#off}\n     */\n    EventTarget$2.prototype.removeEventListener = EventTarget$2.prototype.off;\n\n    /**\n     * An alias of {@link EventTarget#trigger}. Allows `EventTarget` to mimic\n     * the standard DOM API.\n     *\n     * @function\n     * @see {@link EventTarget#trigger}\n     */\n    EventTarget$2.prototype.dispatchEvent = EventTarget$2.prototype.trigger;\n\n    /**\n     * @file mixins/evented.js\n     * @module evented\n     */\n    const objName = obj => {\n        if (typeof obj.name === 'function') {\n            return obj.name();\n        }\n        if (typeof obj.name === 'string') {\n            return obj.name;\n        }\n        if (obj.name_) {\n            return obj.name_;\n        }\n        if (obj.constructor && obj.constructor.name) {\n            return obj.constructor.name;\n        }\n        return typeof obj;\n    };\n\n    /**\n     * Returns whether or not an object has had the evented mixin applied.\n     *\n     * @param  {Object} object\n     *         An object to test.\n     *\n     * @return {boolean}\n     *         Whether or not the object appears to be evented.\n     */\n    const isEvented = object => object instanceof EventTarget$2 || !!object.eventBusEl_ && ['on', 'one', 'off', 'trigger'].every(k => typeof object[k] === 'function');\n\n    /**\n     * Adds a callback to run after the evented mixin applied.\n     *\n     * @param  {Object} object\n     *         An object to Add\n     * @param  {Function} callback\n     *         The callback to run.\n     */\n    const addEventedCallback = (target, callback) => {\n        if (isEvented(target)) {\n            callback();\n        } else {\n            if (!target.eventedCallbacks) {\n                target.eventedCallbacks = [];\n            }\n            target.eventedCallbacks.push(callback);\n        }\n    };\n\n    /**\n     * Whether a value is a valid event type - non-empty string or array.\n     *\n     * @private\n     * @param  {string|Array} type\n     *         The type value to test.\n     *\n     * @return {boolean}\n     *         Whether or not the type is a valid event type.\n     */\n    const isValidEventType = type =>\n        // The regex here verifies that the `type` contains at least one non-\n        // whitespace character.\n        typeof type === 'string' && /\\S/.test(type) || Array.isArray(type) && !!type.length;\n\n    /**\n     * Validates a value to determine if it is a valid event target. Throws if not.\n     *\n     * @private\n     * @throws {Error}\n     *         If the target does not appear to be a valid event target.\n     *\n     * @param  {Object} target\n     *         The object to test.\n     *\n     * @param  {Object} obj\n     *         The evented object we are validating for\n     *\n     * @param  {string} fnName\n     *         The name of the evented mixin function that called this.\n     */\n    const validateTarget = (target, obj, fnName) => {\n        if (!target || !target.nodeName && !isEvented(target)) {\n            throw new Error(`Invalid target for ${objName(obj)}#${fnName}; must be a DOM node or evented object.`);\n        }\n    };\n\n    /**\n     * Validates a value to determine if it is a valid event target. Throws if not.\n     *\n     * @private\n     * @throws {Error}\n     *         If the type does not appear to be a valid event type.\n     *\n     * @param  {string|Array} type\n     *         The type to test.\n     *\n     * @param  {Object} obj\n     *         The evented object we are validating for\n     *\n     * @param  {string} fnName\n     *         The name of the evented mixin function that called this.\n     */\n    const validateEventType = (type, obj, fnName) => {\n        if (!isValidEventType(type)) {\n            throw new Error(`Invalid event type for ${objName(obj)}#${fnName}; must be a non-empty string or array.`);\n        }\n    };\n\n    /**\n     * Validates a value to determine if it is a valid listener. Throws if not.\n     *\n     * @private\n     * @throws {Error}\n     *         If the listener is not a function.\n     *\n     * @param  {Function} listener\n     *         The listener to test.\n     *\n     * @param  {Object} obj\n     *         The evented object we are validating for\n     *\n     * @param  {string} fnName\n     *         The name of the evented mixin function that called this.\n     */\n    const validateListener = (listener, obj, fnName) => {\n        if (typeof listener !== 'function') {\n            throw new Error(`Invalid listener for ${objName(obj)}#${fnName}; must be a function.`);\n        }\n    };\n\n    /**\n     * Takes an array of arguments given to `on()` or `one()`, validates them, and\n     * normalizes them into an object.\n     *\n     * @private\n     * @param  {Object} self\n     *         The evented object on which `on()` or `one()` was called. This\n     *         object will be bound as the `this` value for the listener.\n     *\n     * @param  {Array} args\n     *         An array of arguments passed to `on()` or `one()`.\n     *\n     * @param  {string} fnName\n     *         The name of the evented mixin function that called this.\n     *\n     * @return {Object}\n     *         An object containing useful values for `on()` or `one()` calls.\n     */\n    const normalizeListenArgs = (self, args, fnName) => {\n        // If the number of arguments is less than 3, the target is always the\n        // evented object itself.\n        const isTargetingSelf = args.length < 3 || args[0] === self || args[0] === self.eventBusEl_;\n        let target;\n        let type;\n        let listener;\n        if (isTargetingSelf) {\n            target = self.eventBusEl_;\n\n            // Deal with cases where we got 3 arguments, but we are still listening to\n            // the evented object itself.\n            if (args.length >= 3) {\n                args.shift();\n            }\n            [type, listener] = args;\n        } else {\n            [target, type, listener] = args;\n        }\n        validateTarget(target, self, fnName);\n        validateEventType(type, self, fnName);\n        validateListener(listener, self, fnName);\n        listener = bind_(self, listener);\n        return {\n            isTargetingSelf,\n            target,\n            type,\n            listener\n        };\n    };\n\n    /**\n     * Adds the listener to the event type(s) on the target, normalizing for\n     * the type of target.\n     *\n     * @private\n     * @param  {Element|Object} target\n     *         A DOM node or evented object.\n     *\n     * @param  {string} method\n     *         The event binding method to use (\"on\" or \"one\").\n     *\n     * @param  {string|Array} type\n     *         One or more event type(s).\n     *\n     * @param  {Function} listener\n     *         A listener function.\n     */\n    const listen = (target, method, type, listener) => {\n        validateTarget(target, target, method);\n        if (target.nodeName) {\n            Events[method](target, type, listener);\n        } else {\n            target[method](type, listener);\n        }\n    };\n\n    /**\n     * Contains methods that provide event capabilities to an object which is passed\n     * to {@link module:evented|evented}.\n     *\n     * @mixin EventedMixin\n     */\n    const EventedMixin = {\n        /**\n         * Add a listener to an event (or events) on this object or another evented\n         * object.\n         *\n         * @param  {string|Array|Element|Object} targetOrType\n         *         If this is a string or array, it represents the event type(s)\n         *         that will trigger the listener.\n         *\n         *         Another evented object can be passed here instead, which will\n         *         cause the listener to listen for events on _that_ object.\n         *\n         *         In either case, the listener's `this` value will be bound to\n         *         this object.\n         *\n         * @param  {string|Array|Function} typeOrListener\n         *         If the first argument was a string or array, this should be the\n         *         listener function. Otherwise, this is a string or array of event\n         *         type(s).\n         *\n         * @param  {Function} [listener]\n         *         If the first argument was another evented object, this will be\n         *         the listener function.\n         */\n        on(...args) {\n            const {\n                isTargetingSelf,\n                target,\n                type,\n                listener\n            } = normalizeListenArgs(this, args, 'on');\n            listen(target, 'on', type, listener);\n\n            // If this object is listening to another evented object.\n            if (!isTargetingSelf) {\n                // If this object is disposed, remove the listener.\n                const removeListenerOnDispose = () => this.off(target, type, listener);\n\n                // Use the same function ID as the listener so we can remove it later it\n                // using the ID of the original listener.\n                removeListenerOnDispose.guid = listener.guid;\n\n                // Add a listener to the target's dispose event as well. This ensures\n                // that if the target is disposed BEFORE this object, we remove the\n                // removal listener that was just added. Otherwise, we create a memory leak.\n                const removeRemoverOnTargetDispose = () => this.off('dispose', removeListenerOnDispose);\n\n                // Use the same function ID as the listener so we can remove it later\n                // it using the ID of the original listener.\n                removeRemoverOnTargetDispose.guid = listener.guid;\n                listen(this, 'on', 'dispose', removeListenerOnDispose);\n                listen(target, 'on', 'dispose', removeRemoverOnTargetDispose);\n            }\n        },\n        /**\n         * Add a listener to an event (or events) on this object or another evented\n         * object. The listener will be called once per event and then removed.\n         *\n         * @param  {string|Array|Element|Object} targetOrType\n         *         If this is a string or array, it represents the event type(s)\n         *         that will trigger the listener.\n         *\n         *         Another evented object can be passed here instead, which will\n         *         cause the listener to listen for events on _that_ object.\n         *\n         *         In either case, the listener's `this` value will be bound to\n         *         this object.\n         *\n         * @param  {string|Array|Function} typeOrListener\n         *         If the first argument was a string or array, this should be the\n         *         listener function. Otherwise, this is a string or array of event\n         *         type(s).\n         *\n         * @param  {Function} [listener]\n         *         If the first argument was another evented object, this will be\n         *         the listener function.\n         */\n        one(...args) {\n            const {\n                isTargetingSelf,\n                target,\n                type,\n                listener\n            } = normalizeListenArgs(this, args, 'one');\n\n            // Targeting this evented object.\n            if (isTargetingSelf) {\n                listen(target, 'one', type, listener);\n\n                // Targeting another evented object.\n            } else {\n                // TODO: This wrapper is incorrect! It should only\n                //       remove the wrapper for the event type that called it.\n                //       Instead all listeners are removed on the first trigger!\n                //       see https://github.com/videojs/video.js/issues/5962\n                const wrapper = (...largs) => {\n                    this.off(target, type, wrapper);\n                    listener.apply(null, largs);\n                };\n\n                // Use the same function ID as the listener so we can remove it later\n                // it using the ID of the original listener.\n                wrapper.guid = listener.guid;\n                listen(target, 'one', type, wrapper);\n            }\n        },\n        /**\n         * Add a listener to an event (or events) on this object or another evented\n         * object. The listener will only be called once for the first event that is triggered\n         * then removed.\n         *\n         * @param  {string|Array|Element|Object} targetOrType\n         *         If this is a string or array, it represents the event type(s)\n         *         that will trigger the listener.\n         *\n         *         Another evented object can be passed here instead, which will\n         *         cause the listener to listen for events on _that_ object.\n         *\n         *         In either case, the listener's `this` value will be bound to\n         *         this object.\n         *\n         * @param  {string|Array|Function} typeOrListener\n         *         If the first argument was a string or array, this should be the\n         *         listener function. Otherwise, this is a string or array of event\n         *         type(s).\n         *\n         * @param  {Function} [listener]\n         *         If the first argument was another evented object, this will be\n         *         the listener function.\n         */\n        any(...args) {\n            const {\n                isTargetingSelf,\n                target,\n                type,\n                listener\n            } = normalizeListenArgs(this, args, 'any');\n\n            // Targeting this evented object.\n            if (isTargetingSelf) {\n                listen(target, 'any', type, listener);\n\n                // Targeting another evented object.\n            } else {\n                const wrapper = (...largs) => {\n                    this.off(target, type, wrapper);\n                    listener.apply(null, largs);\n                };\n\n                // Use the same function ID as the listener so we can remove it later\n                // it using the ID of the original listener.\n                wrapper.guid = listener.guid;\n                listen(target, 'any', type, wrapper);\n            }\n        },\n        /**\n         * Removes listener(s) from event(s) on an evented object.\n         *\n         * @param  {string|Array|Element|Object} [targetOrType]\n         *         If this is a string or array, it represents the event type(s).\n         *\n         *         Another evented object can be passed here instead, in which case\n         *         ALL 3 arguments are _required_.\n         *\n         * @param  {string|Array|Function} [typeOrListener]\n         *         If the first argument was a string or array, this may be the\n         *         listener function. Otherwise, this is a string or array of event\n         *         type(s).\n         *\n         * @param  {Function} [listener]\n         *         If the first argument was another evented object, this will be\n         *         the listener function; otherwise, _all_ listeners bound to the\n         *         event type(s) will be removed.\n         */\n        off(targetOrType, typeOrListener, listener) {\n            // Targeting this evented object.\n            if (!targetOrType || isValidEventType(targetOrType)) {\n                off(this.eventBusEl_, targetOrType, typeOrListener);\n\n                // Targeting another evented object.\n            } else {\n                const target = targetOrType;\n                const type = typeOrListener;\n\n                // Fail fast and in a meaningful way!\n                validateTarget(target, this, 'off');\n                validateEventType(type, this, 'off');\n                validateListener(listener, this, 'off');\n\n                // Ensure there's at least a guid, even if the function hasn't been used\n                listener = bind_(this, listener);\n\n                // Remove the dispose listener on this evented object, which was given\n                // the same guid as the event listener in on().\n                this.off('dispose', listener);\n                if (target.nodeName) {\n                    off(target, type, listener);\n                    off(target, 'dispose', listener);\n                } else if (isEvented(target)) {\n                    target.off(type, listener);\n                    target.off('dispose', listener);\n                }\n            }\n        },\n        /**\n         * Fire an event on this evented object, causing its listeners to be called.\n         *\n         * @param   {string|Object} event\n         *          An event type or an object with a type property.\n         *\n         * @param   {Object} [hash]\n         *          An additional object to pass along to listeners.\n         *\n         * @return {boolean}\n         *          Whether or not the default behavior was prevented.\n         */\n        trigger(event, hash) {\n            validateTarget(this.eventBusEl_, this, 'trigger');\n            const type = event && typeof event !== 'string' ? event.type : event;\n            if (!isValidEventType(type)) {\n                throw new Error(`Invalid event type for ${objName(this)}#trigger; ` + 'must be a non-empty string or object with a type key that has a non-empty value.');\n            }\n            return trigger(this.eventBusEl_, event, hash);\n        }\n    };\n\n    /**\n     * Applies {@link module:evented~EventedMixin|EventedMixin} to a target object.\n     *\n     * @param  {Object} target\n     *         The object to which to add event methods.\n     *\n     * @param  {Object} [options={}]\n     *         Options for customizing the mixin behavior.\n     *\n     * @param  {string} [options.eventBusKey]\n     *         By default, adds a `eventBusEl_` DOM element to the target object,\n     *         which is used as an event bus. If the target object already has a\n     *         DOM element that should be used, pass its key here.\n     *\n     * @return {Object}\n     *         The target object.\n     */\n    function evented(target, options = {}) {\n        const {\n            eventBusKey\n        } = options;\n\n        // Set or create the eventBusEl_.\n        if (eventBusKey) {\n            if (!target[eventBusKey].nodeName) {\n                throw new Error(`The eventBusKey \"${eventBusKey}\" does not refer to an element.`);\n            }\n            target.eventBusEl_ = target[eventBusKey];\n        } else {\n            target.eventBusEl_ = createEl('span', {\n                className: 'vjs-event-bus'\n            });\n        }\n        Object.assign(target, EventedMixin);\n        if (target.eventedCallbacks) {\n            target.eventedCallbacks.forEach(callback => {\n                callback();\n            });\n        }\n\n        // When any evented object is disposed, it removes all its listeners.\n        target.on('dispose', () => {\n            target.off();\n            [target, target.el_, target.eventBusEl_].forEach(function (val) {\n                if (val && DomData.has(val)) {\n                    DomData.delete(val);\n                }\n            });\n            window.setTimeout(() => {\n                target.eventBusEl_ = null;\n            }, 0);\n        });\n        return target;\n    }\n\n    /**\n     * @file mixins/stateful.js\n     * @module stateful\n     */\n\n    /**\n     * Contains methods that provide statefulness to an object which is passed\n     * to {@link module:stateful}.\n     *\n     * @mixin StatefulMixin\n     */\n    const StatefulMixin = {\n        /**\n         * A hash containing arbitrary keys and values representing the state of\n         * the object.\n         *\n         * @type {Object}\n         */\n        state: {},\n        /**\n         * Set the state of an object by mutating its\n         * {@link module:stateful~StatefulMixin.state|state} object in place.\n         *\n         * @fires   module:stateful~StatefulMixin#statechanged\n         * @param   {Object|Function} stateUpdates\n         *          A new set of properties to shallow-merge into the plugin state.\n         *          Can be a plain object or a function returning a plain object.\n         *\n         * @return {Object|undefined}\n         *          An object containing changes that occurred. If no changes\n         *          occurred, returns `undefined`.\n         */\n        setState(stateUpdates) {\n            // Support providing the `stateUpdates` state as a function.\n            if (typeof stateUpdates === 'function') {\n                stateUpdates = stateUpdates();\n            }\n            let changes;\n            each(stateUpdates, (value, key) => {\n                // Record the change if the value is different from what's in the\n                // current state.\n                if (this.state[key] !== value) {\n                    changes = changes || {};\n                    changes[key] = {\n                        from: this.state[key],\n                        to: value\n                    };\n                }\n                this.state[key] = value;\n            });\n\n            // Only trigger \"statechange\" if there were changes AND we have a trigger\n            // function. This allows us to not require that the target object be an\n            // evented object.\n            if (changes && isEvented(this)) {\n                /**\n                 * An event triggered on an object that is both\n                 * {@link module:stateful|stateful} and {@link module:evented|evented}\n                 * indicating that its state has changed.\n                 *\n                 * @event    module:stateful~StatefulMixin#statechanged\n                 * @type     {Object}\n                 * @property {Object} changes\n                 *           A hash containing the properties that were changed and\n                 *           the values they were changed `from` and `to`.\n                 */\n                this.trigger({\n                    changes,\n                    type: 'statechanged'\n                });\n            }\n            return changes;\n        }\n    };\n\n    /**\n     * Applies {@link module:stateful~StatefulMixin|StatefulMixin} to a target\n     * object.\n     *\n     * If the target object is {@link module:evented|evented} and has a\n     * `handleStateChanged` method, that method will be automatically bound to the\n     * `statechanged` event on itself.\n     *\n     * @param   {Object} target\n     *          The object to be made stateful.\n     *\n     * @param   {Object} [defaultState]\n     *          A default set of properties to populate the newly-stateful object's\n     *          `state` property.\n     *\n     * @return {Object}\n     *          Returns the `target`.\n     */\n    function stateful(target, defaultState) {\n        Object.assign(target, StatefulMixin);\n\n        // This happens after the mixing-in because we need to replace the `state`\n        // added in that step.\n        target.state = Object.assign({}, target.state, defaultState);\n\n        // Auto-bind the `handleStateChanged` method of the target object if it exists.\n        if (typeof target.handleStateChanged === 'function' && isEvented(target)) {\n            target.on('statechanged', target.handleStateChanged);\n        }\n        return target;\n    }\n\n    /**\n     * @file str.js\n     * @module to-lower-case\n     */\n\n    /**\n     * Lowercase the first letter of a string.\n     *\n     * @param {string} string\n     *        String to be lowercased\n     *\n     * @return {string}\n     *         The string with a lowercased first letter\n     */\n    const toLowerCase = function (string) {\n        if (typeof string !== 'string') {\n            return string;\n        }\n        return string.replace(/./, w => w.toLowerCase());\n    };\n\n    /**\n     * Uppercase the first letter of a string.\n     *\n     * @param {string} string\n     *        String to be uppercased\n     *\n     * @return {string}\n     *         The string with an uppercased first letter\n     */\n    const toTitleCase$1 = function (string) {\n        if (typeof string !== 'string') {\n            return string;\n        }\n        return string.replace(/./, w => w.toUpperCase());\n    };\n\n    /**\n     * Compares the TitleCase versions of the two strings for equality.\n     *\n     * @param {string} str1\n     *        The first string to compare\n     *\n     * @param {string} str2\n     *        The second string to compare\n     *\n     * @return {boolean}\n     *         Whether the TitleCase versions of the strings are equal\n     */\n    const titleCaseEquals = function (str1, str2) {\n        return toTitleCase$1(str1) === toTitleCase$1(str2);\n    };\n\n    var Str = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        toLowerCase: toLowerCase,\n        toTitleCase: toTitleCase$1,\n        titleCaseEquals: titleCaseEquals\n    });\n\n    var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};\n\n    function unwrapExports (x) {\n        return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;\n    }\n\n    function createCommonjsModule(fn, module) {\n        return module = { exports: {} }, fn(module, module.exports), module.exports;\n    }\n\n    var keycode = createCommonjsModule(function (module, exports) {\n        // Source: http://jsfiddle.net/vWx8V/\n        // http://stackoverflow.com/questions/5603195/full-list-of-javascript-keycodes\n\n        /**\n         * Conenience method returns corresponding value for given keyName or keyCode.\n         *\n         * @param {Mixed} keyCode {Number} or keyName {String}\n         * @return {Mixed}\n         * @api public\n         */\n\n        function keyCode(searchInput) {\n            // Keyboard Events\n            if (searchInput && 'object' === typeof searchInput) {\n                var hasKeyCode = searchInput.which || searchInput.keyCode || searchInput.charCode;\n                if (hasKeyCode) searchInput = hasKeyCode;\n            }\n\n            // Numbers\n            if ('number' === typeof searchInput) return names[searchInput];\n\n            // Everything else (cast to string)\n            var search = String(searchInput);\n\n            // check codes\n            var foundNamedKey = codes[search.toLowerCase()];\n            if (foundNamedKey) return foundNamedKey;\n\n            // check aliases\n            var foundNamedKey = aliases[search.toLowerCase()];\n            if (foundNamedKey) return foundNamedKey;\n\n            // weird character?\n            if (search.length === 1) return search.charCodeAt(0);\n            return undefined;\n        }\n\n        /**\n         * Compares a keyboard event with a given keyCode or keyName.\n         *\n         * @param {Event} event Keyboard event that should be tested\n         * @param {Mixed} keyCode {Number} or keyName {String}\n         * @return {Boolean}\n         * @api public\n         */\n        keyCode.isEventKey = function isEventKey(event, nameOrCode) {\n            if (event && 'object' === typeof event) {\n                var keyCode = event.which || event.keyCode || event.charCode;\n                if (keyCode === null || keyCode === undefined) {\n                    return false;\n                }\n                if (typeof nameOrCode === 'string') {\n                    // check codes\n                    var foundNamedKey = codes[nameOrCode.toLowerCase()];\n                    if (foundNamedKey) {\n                        return foundNamedKey === keyCode;\n                    }\n\n                    // check aliases\n                    var foundNamedKey = aliases[nameOrCode.toLowerCase()];\n                    if (foundNamedKey) {\n                        return foundNamedKey === keyCode;\n                    }\n                } else if (typeof nameOrCode === 'number') {\n                    return nameOrCode === keyCode;\n                }\n                return false;\n            }\n        };\n        exports = module.exports = keyCode;\n\n        /**\n         * Get by name\n         *\n         *   exports.code['enter'] // => 13\n         */\n\n        var codes = exports.code = exports.codes = {\n            'backspace': 8,\n            'tab': 9,\n            'enter': 13,\n            'shift': 16,\n            'ctrl': 17,\n            'alt': 18,\n            'pause/break': 19,\n            'caps lock': 20,\n            'esc': 27,\n            'space': 32,\n            'page up': 33,\n            'page down': 34,\n            'end': 35,\n            'home': 36,\n            'left': 37,\n            'up': 38,\n            'right': 39,\n            'down': 40,\n            'insert': 45,\n            'delete': 46,\n            'command': 91,\n            'left command': 91,\n            'right command': 93,\n            'numpad *': 106,\n            'numpad +': 107,\n            'numpad -': 109,\n            'numpad .': 110,\n            'numpad /': 111,\n            'num lock': 144,\n            'scroll lock': 145,\n            'my computer': 182,\n            'my calculator': 183,\n            ';': 186,\n            '=': 187,\n            ',': 188,\n            '-': 189,\n            '.': 190,\n            '/': 191,\n            '`': 192,\n            '[': 219,\n            '\\\\': 220,\n            ']': 221,\n            \"'\": 222\n        };\n\n        // Helper aliases\n\n        var aliases = exports.aliases = {\n            'windows': 91,\n            '⇧': 16,\n            '⌥': 18,\n            '⌃': 17,\n            '⌘': 91,\n            'ctl': 17,\n            'control': 17,\n            'option': 18,\n            'pause': 19,\n            'break': 19,\n            'caps': 20,\n            'return': 13,\n            'escape': 27,\n            'spc': 32,\n            'spacebar': 32,\n            'pgup': 33,\n            'pgdn': 34,\n            'ins': 45,\n            'del': 46,\n            'cmd': 91\n        };\n\n        /*!\n     * Programatically add the following\n     */\n\n        // lower case chars\n        for (i = 97; i < 123; i++) codes[String.fromCharCode(i)] = i - 32;\n\n        // numbers\n        for (var i = 48; i < 58; i++) codes[i - 48] = i;\n\n        // function keys\n        for (i = 1; i < 13; i++) codes['f' + i] = i + 111;\n\n        // numpad keys\n        for (i = 0; i < 10; i++) codes['numpad ' + i] = i + 96;\n\n        /**\n         * Get by code\n         *\n         *   exports.name[13] // => 'Enter'\n         */\n\n        var names = exports.names = exports.title = {}; // title for backward compat\n\n        // Create reverse mapping\n        for (i in codes) names[codes[i]] = i;\n\n        // Add aliases\n        for (var alias in aliases) {\n            codes[alias] = aliases[alias];\n        }\n    });\n    keycode.code;\n    keycode.codes;\n    keycode.aliases;\n    keycode.names;\n    keycode.title;\n\n    /**\n     * Player Component - Base class for all UI objects\n     *\n     * @file component.js\n     */\n\n    /**\n     * Base class for all UI Components.\n     * Components are UI objects which represent both a javascript object and an element\n     * in the DOM. They can be children of other components, and can have\n     * children themselves.\n     *\n     * Components can also use methods from {@link EventTarget}\n     */\n    class Component$1 {\n        /**\n         * A callback that is called when a component is ready. Does not have any\n         * parameters and any callback value will be ignored.\n         *\n         * @callback ReadyCallback\n         * @this Component\n         */\n\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of component options.\n         *\n         * @param {Object[]} [options.children]\n         *        An array of children objects to initialize this component with. Children objects have\n         *        a name property that will be used if more than one component of the same type needs to be\n         *        added.\n         *\n         * @param  {string} [options.className]\n         *         A class or space separated list of classes to add the component\n         *\n         * @param {ReadyCallback} [ready]\n         *        Function that gets called when the `Component` is ready.\n         */\n        constructor(player, options, ready) {\n            // The component might be the player itself and we can't pass `this` to super\n            if (!player && this.play) {\n                this.player_ = player = this; // eslint-disable-line\n            } else {\n                this.player_ = player;\n            }\n            this.isDisposed_ = false;\n\n            // Hold the reference to the parent component via `addChild` method\n            this.parentComponent_ = null;\n\n            // Make a copy of prototype.options_ to protect against overriding defaults\n            this.options_ = merge$2({}, this.options_);\n\n            // Updated options with supplied options\n            options = this.options_ = merge$2(this.options_, options);\n\n            // Get ID from options or options element if one is supplied\n            this.id_ = options.id || options.el && options.el.id;\n\n            // If there was no ID from the options, generate one\n            if (!this.id_) {\n                // Don't require the player ID function in the case of mock players\n                const id = player && player.id && player.id() || 'no_player';\n                this.id_ = `${id}_component_${newGUID()}`;\n            }\n            this.name_ = options.name || null;\n\n            // Create element if one wasn't provided in options\n            if (options.el) {\n                this.el_ = options.el;\n            } else if (options.createEl !== false) {\n                this.el_ = this.createEl();\n            }\n            if (options.className && this.el_) {\n                options.className.split(' ').forEach(c => this.addClass(c));\n            }\n\n            // Remove the placeholder event methods. If the component is evented, the\n            // real methods are added next\n            ['on', 'off', 'one', 'any', 'trigger'].forEach(fn => {\n                this[fn] = undefined;\n            });\n\n            // if evented is anything except false, we want to mixin in evented\n            if (options.evented !== false) {\n                // Make this an evented object and use `el_`, if available, as its event bus\n                evented(this, {\n                    eventBusKey: this.el_ ? 'el_' : null\n                });\n                this.handleLanguagechange = this.handleLanguagechange.bind(this);\n                this.on(this.player_, 'languagechange', this.handleLanguagechange);\n            }\n            stateful(this, this.constructor.defaultState);\n            this.children_ = [];\n            this.childIndex_ = {};\n            this.childNameIndex_ = {};\n            this.setTimeoutIds_ = new Set();\n            this.setIntervalIds_ = new Set();\n            this.rafIds_ = new Set();\n            this.namedRafs_ = new Map();\n            this.clearingTimersOnDispose_ = false;\n\n            // Add any child components in options\n            if (options.initChildren !== false) {\n                this.initChildren();\n            }\n\n            // Don't want to trigger ready here or it will go before init is actually\n            // finished for all children that run this constructor\n            this.ready(ready);\n            if (options.reportTouchActivity !== false) {\n                this.enableTouchActivity();\n            }\n        }\n\n        // `on`, `off`, `one`, `any` and `trigger` are here so tsc includes them in definitions.\n        // They are replaced or removed in the constructor\n\n        /**\n         * Adds an `event listener` to an instance of an `EventTarget`. An `event listener` is a\n         * function that will get called when an event with a certain name gets triggered.\n         *\n         * @param {string|string[]} type\n         *        An event name or an array of event names.\n         *\n         * @param {Function} fn\n         *        The function to call with `EventTarget`s\n         */\n        on(type, fn) {}\n\n        /**\n         * Removes an `event listener` for a specific event from an instance of `EventTarget`.\n         * This makes it so that the `event listener` will no longer get called when the\n         * named event happens.\n         *\n         * @param {string|string[]} type\n         *        An event name or an array of event names.\n         *\n         * @param {Function} fn\n         *        The function to remove.\n         */\n        off(type, fn) {}\n\n        /**\n         * This function will add an `event listener` that gets triggered only once. After the\n         * first trigger it will get removed. This is like adding an `event listener`\n         * with {@link EventTarget#on} that calls {@link EventTarget#off} on itself.\n         *\n         * @param {string|string[]} type\n         *        An event name or an array of event names.\n         *\n         * @param {Function} fn\n         *        The function to be called once for each event name.\n         */\n        one(type, fn) {}\n\n        /**\n         * This function will add an `event listener` that gets triggered only once and is\n         * removed from all events. This is like adding an array of `event listener`s\n         * with {@link EventTarget#on} that calls {@link EventTarget#off} on all events the\n         * first time it is triggered.\n         *\n         * @param {string|string[]} type\n         *        An event name or an array of event names.\n         *\n         * @param {Function} fn\n         *        The function to be called once for each event name.\n         */\n        any(type, fn) {}\n\n        /**\n         * This function causes an event to happen. This will then cause any `event listeners`\n         * that are waiting for that event, to get called. If there are no `event listeners`\n         * for an event then nothing will happen.\n         *\n         * If the name of the `Event` that is being triggered is in `EventTarget.allowedEvents_`.\n         * Trigger will also call the `on` + `uppercaseEventName` function.\n         *\n         * Example:\n         * 'click' is in `EventTarget.allowedEvents_`, so, trigger will attempt to call\n         * `onClick` if it exists.\n         *\n         * @param {string|Event|Object} event\n         *        The name of the event, an `Event`, or an object with a key of type set to\n         *        an event name.\n         */\n        trigger(event) {}\n\n        /**\n         * Dispose of the `Component` and all child components.\n         *\n         * @fires Component#dispose\n         *\n         * @param {Object} options\n         * @param {Element} options.originalEl element with which to replace player element\n         */\n        dispose(options = {}) {\n            // Bail out if the component has already been disposed.\n            if (this.isDisposed_) {\n                return;\n            }\n            if (this.readyQueue_) {\n                this.readyQueue_.length = 0;\n            }\n\n            /**\n             * Triggered when a `Component` is disposed.\n             *\n             * @event Component#dispose\n             * @type {Event}\n             *\n             * @property {boolean} [bubbles=false]\n             *           set to false so that the dispose event does not\n             *           bubble up\n             */\n            this.trigger({\n                type: 'dispose',\n                bubbles: false\n            });\n            this.isDisposed_ = true;\n\n            // Dispose all children.\n            if (this.children_) {\n                for (let i = this.children_.length - 1; i >= 0; i--) {\n                    if (this.children_[i].dispose) {\n                        this.children_[i].dispose();\n                    }\n                }\n            }\n\n            // Delete child references\n            this.children_ = null;\n            this.childIndex_ = null;\n            this.childNameIndex_ = null;\n            this.parentComponent_ = null;\n            if (this.el_) {\n                // Remove element from DOM\n                if (this.el_.parentNode) {\n                    if (options.restoreEl) {\n                        this.el_.parentNode.replaceChild(options.restoreEl, this.el_);\n                    } else {\n                        this.el_.parentNode.removeChild(this.el_);\n                    }\n                }\n                this.el_ = null;\n            }\n\n            // remove reference to the player after disposing of the element\n            this.player_ = null;\n        }\n\n        /**\n         * Determine whether or not this component has been disposed.\n         *\n         * @return {boolean}\n         *         If the component has been disposed, will be `true`. Otherwise, `false`.\n         */\n        isDisposed() {\n            return Boolean(this.isDisposed_);\n        }\n\n        /**\n         * Return the {@link Player} that the `Component` has attached to.\n         *\n         * @return { import('./player').default }\n         *         The player that this `Component` has attached to.\n         */\n        player() {\n            return this.player_;\n        }\n\n        /**\n         * Deep merge of options objects with new options.\n         * > Note: When both `obj` and `options` contain properties whose values are objects.\n         *         The two properties get merged using {@link module:obj.merge}\n         *\n         * @param {Object} obj\n         *        The object that contains new options.\n         *\n         * @return {Object}\n         *         A new object of `this.options_` and `obj` merged together.\n         */\n        options(obj) {\n            if (!obj) {\n                return this.options_;\n            }\n            this.options_ = merge$2(this.options_, obj);\n            return this.options_;\n        }\n\n        /**\n         * Get the `Component`s DOM element\n         *\n         * @return {Element}\n         *         The DOM element for this `Component`.\n         */\n        el() {\n            return this.el_;\n        }\n\n        /**\n         * Create the `Component`s DOM element.\n         *\n         * @param {string} [tagName]\n         *        Element's DOM node type. e.g. 'div'\n         *\n         * @param {Object} [properties]\n         *        An object of properties that should be set.\n         *\n         * @param {Object} [attributes]\n         *        An object of attributes that should be set.\n         *\n         * @return {Element}\n         *         The element that gets created.\n         */\n        createEl(tagName, properties, attributes) {\n            return createEl(tagName, properties, attributes);\n        }\n\n        /**\n         * Localize a string given the string in english.\n         *\n         * If tokens are provided, it'll try and run a simple token replacement on the provided string.\n         * The tokens it looks for look like `{1}` with the index being 1-indexed into the tokens array.\n         *\n         * If a `defaultValue` is provided, it'll use that over `string`,\n         * if a value isn't found in provided language files.\n         * This is useful if you want to have a descriptive key for token replacement\n         * but have a succinct localized string and not require `en.json` to be included.\n         *\n         * Currently, it is used for the progress bar timing.\n         * ```js\n         * {\n         *   \"progress bar timing: currentTime={1} duration={2}\": \"{1} of {2}\"\n         * }\n         * ```\n         * It is then used like so:\n         * ```js\n         * this.localize('progress bar timing: currentTime={1} duration{2}',\n         *               [this.player_.currentTime(), this.player_.duration()],\n         *               '{1} of {2}');\n         * ```\n         *\n         * Which outputs something like: `01:23 of 24:56`.\n         *\n         *\n         * @param {string} string\n         *        The string to localize and the key to lookup in the language files.\n         * @param {string[]} [tokens]\n         *        If the current item has token replacements, provide the tokens here.\n         * @param {string} [defaultValue]\n         *        Defaults to `string`. Can be a default value to use for token replacement\n         *        if the lookup key is needed to be separate.\n         *\n         * @return {string}\n         *         The localized string or if no localization exists the english string.\n         */\n        localize(string, tokens, defaultValue = string) {\n            const code = this.player_.language && this.player_.language();\n            const languages = this.player_.languages && this.player_.languages();\n            const language = languages && languages[code];\n            const primaryCode = code && code.split('-')[0];\n            const primaryLang = languages && languages[primaryCode];\n            let localizedString = defaultValue;\n            if (language && language[string]) {\n                localizedString = language[string];\n            } else if (primaryLang && primaryLang[string]) {\n                localizedString = primaryLang[string];\n            }\n            if (tokens) {\n                localizedString = localizedString.replace(/\\{(\\d+)\\}/g, function (match, index) {\n                    const value = tokens[index - 1];\n                    let ret = value;\n                    if (typeof value === 'undefined') {\n                        ret = match;\n                    }\n                    return ret;\n                });\n            }\n            return localizedString;\n        }\n\n        /**\n         * Handles language change for the player in components. Should be overridden by sub-components.\n         *\n         * @abstract\n         */\n        handleLanguagechange() {}\n\n        /**\n         * Return the `Component`s DOM element. This is where children get inserted.\n         * This will usually be the the same as the element returned in {@link Component#el}.\n         *\n         * @return {Element}\n         *         The content element for this `Component`.\n         */\n        contentEl() {\n            return this.contentEl_ || this.el_;\n        }\n\n        /**\n         * Get this `Component`s ID\n         *\n         * @return {string}\n         *         The id of this `Component`\n         */\n        id() {\n            return this.id_;\n        }\n\n        /**\n         * Get the `Component`s name. The name gets used to reference the `Component`\n         * and is set during registration.\n         *\n         * @return {string}\n         *         The name of this `Component`.\n         */\n        name() {\n            return this.name_;\n        }\n\n        /**\n         * Get an array of all child components\n         *\n         * @return {Array}\n         *         The children\n         */\n        children() {\n            return this.children_;\n        }\n\n        /**\n         * Returns the child `Component` with the given `id`.\n         *\n         * @param {string} id\n         *        The id of the child `Component` to get.\n         *\n         * @return {Component|undefined}\n         *         The child `Component` with the given `id` or undefined.\n         */\n        getChildById(id) {\n            return this.childIndex_[id];\n        }\n\n        /**\n         * Returns the child `Component` with the given `name`.\n         *\n         * @param {string} name\n         *        The name of the child `Component` to get.\n         *\n         * @return {Component|undefined}\n         *         The child `Component` with the given `name` or undefined.\n         */\n        getChild(name) {\n            if (!name) {\n                return;\n            }\n            return this.childNameIndex_[name];\n        }\n\n        /**\n         * Returns the descendant `Component` following the givent\n         * descendant `names`. For instance ['foo', 'bar', 'baz'] would\n         * try to get 'foo' on the current component, 'bar' on the 'foo'\n         * component and 'baz' on the 'bar' component and return undefined\n         * if any of those don't exist.\n         *\n         * @param {...string[]|...string} names\n         *        The name of the child `Component` to get.\n         *\n         * @return {Component|undefined}\n         *         The descendant `Component` following the given descendant\n         *         `names` or undefined.\n         */\n        getDescendant(...names) {\n            // flatten array argument into the main array\n            names = names.reduce((acc, n) => acc.concat(n), []);\n            let currentChild = this;\n            for (let i = 0; i < names.length; i++) {\n                currentChild = currentChild.getChild(names[i]);\n                if (!currentChild || !currentChild.getChild) {\n                    return;\n                }\n            }\n            return currentChild;\n        }\n\n        /**\n         * Add a child `Component` inside the current `Component`.\n         *\n         *\n         * @param {string|Component} child\n         *        The name or instance of a child to add.\n         *\n         * @param {Object} [options={}]\n         *        The key/value store of options that will get passed to children of\n         *        the child.\n         *\n         * @param {number} [index=this.children_.length]\n         *        The index to attempt to add a child into.\n         *\n         * @return {Component}\n         *         The `Component` that gets added as a child. When using a string the\n         *         `Component` will get created by this process.\n         */\n        addChild(child, options = {}, index = this.children_.length) {\n            let component;\n            let componentName;\n\n            // If child is a string, create component with options\n            if (typeof child === 'string') {\n                componentName = toTitleCase$1(child);\n                const componentClassName = options.componentClass || componentName;\n\n                // Set name through options\n                options.name = componentName;\n\n                // Create a new object & element for this controls set\n                // If there's no .player_, this is a player\n                const ComponentClass = Component$1.getComponent(componentClassName);\n                if (!ComponentClass) {\n                    throw new Error(`Component ${componentClassName} does not exist`);\n                }\n\n                // data stored directly on the videojs object may be\n                // misidentified as a component to retain\n                // backwards-compatibility with 4.x. check to make sure the\n                // component class can be instantiated.\n                if (typeof ComponentClass !== 'function') {\n                    return null;\n                }\n                component = new ComponentClass(this.player_ || this, options);\n\n                // child is a component instance\n            } else {\n                component = child;\n            }\n            if (component.parentComponent_) {\n                component.parentComponent_.removeChild(component);\n            }\n            this.children_.splice(index, 0, component);\n            component.parentComponent_ = this;\n            if (typeof component.id === 'function') {\n                this.childIndex_[component.id()] = component;\n            }\n\n            // If a name wasn't used to create the component, check if we can use the\n            // name function of the component\n            componentName = componentName || component.name && toTitleCase$1(component.name());\n            if (componentName) {\n                this.childNameIndex_[componentName] = component;\n                this.childNameIndex_[toLowerCase(componentName)] = component;\n            }\n\n            // Add the UI object's element to the container div (box)\n            // Having an element is not required\n            if (typeof component.el === 'function' && component.el()) {\n                // If inserting before a component, insert before that component's element\n                let refNode = null;\n                if (this.children_[index + 1]) {\n                    // Most children are components, but the video tech is an HTML element\n                    if (this.children_[index + 1].el_) {\n                        refNode = this.children_[index + 1].el_;\n                    } else if (isEl(this.children_[index + 1])) {\n                        refNode = this.children_[index + 1];\n                    }\n                }\n                this.contentEl().insertBefore(component.el(), refNode);\n            }\n\n            // Return so it can stored on parent object if desired.\n            return component;\n        }\n\n        /**\n         * Remove a child `Component` from this `Component`s list of children. Also removes\n         * the child `Component`s element from this `Component`s element.\n         *\n         * @param {Component} component\n         *        The child `Component` to remove.\n         */\n        removeChild(component) {\n            if (typeof component === 'string') {\n                component = this.getChild(component);\n            }\n            if (!component || !this.children_) {\n                return;\n            }\n            let childFound = false;\n            for (let i = this.children_.length - 1; i >= 0; i--) {\n                if (this.children_[i] === component) {\n                    childFound = true;\n                    this.children_.splice(i, 1);\n                    break;\n                }\n            }\n            if (!childFound) {\n                return;\n            }\n            component.parentComponent_ = null;\n            this.childIndex_[component.id()] = null;\n            this.childNameIndex_[toTitleCase$1(component.name())] = null;\n            this.childNameIndex_[toLowerCase(component.name())] = null;\n            const compEl = component.el();\n            if (compEl && compEl.parentNode === this.contentEl()) {\n                this.contentEl().removeChild(component.el());\n            }\n        }\n\n        /**\n         * Add and initialize default child `Component`s based upon options.\n         */\n        initChildren() {\n            const children = this.options_.children;\n            if (children) {\n                // `this` is `parent`\n                const parentOptions = this.options_;\n                const handleAdd = child => {\n                    const name = child.name;\n                    let opts = child.opts;\n\n                    // Allow options for children to be set at the parent options\n                    // e.g. videojs(id, { controlBar: false });\n                    // instead of videojs(id, { children: { controlBar: false });\n                    if (parentOptions[name] !== undefined) {\n                        opts = parentOptions[name];\n                    }\n\n                    // Allow for disabling default components\n                    // e.g. options['children']['posterImage'] = false\n                    if (opts === false) {\n                        return;\n                    }\n\n                    // Allow options to be passed as a simple boolean if no configuration\n                    // is necessary.\n                    if (opts === true) {\n                        opts = {};\n                    }\n\n                    // We also want to pass the original player options\n                    // to each component as well so they don't need to\n                    // reach back into the player for options later.\n                    opts.playerOptions = this.options_.playerOptions;\n\n                    // Create and add the child component.\n                    // Add a direct reference to the child by name on the parent instance.\n                    // If two of the same component are used, different names should be supplied\n                    // for each\n                    const newChild = this.addChild(name, opts);\n                    if (newChild) {\n                        this[name] = newChild;\n                    }\n                };\n\n                // Allow for an array of children details to passed in the options\n                let workingChildren;\n                const Tech = Component$1.getComponent('Tech');\n                if (Array.isArray(children)) {\n                    workingChildren = children;\n                } else {\n                    workingChildren = Object.keys(children);\n                }\n                workingChildren\n                    // children that are in this.options_ but also in workingChildren  would\n                    // give us extra children we do not want. So, we want to filter them out.\n                    .concat(Object.keys(this.options_).filter(function (child) {\n                        return !workingChildren.some(function (wchild) {\n                            if (typeof wchild === 'string') {\n                                return child === wchild;\n                            }\n                            return child === wchild.name;\n                        });\n                    })).map(child => {\n                    let name;\n                    let opts;\n                    if (typeof child === 'string') {\n                        name = child;\n                        opts = children[name] || this.options_[name] || {};\n                    } else {\n                        name = child.name;\n                        opts = child;\n                    }\n                    return {\n                        name,\n                        opts\n                    };\n                }).filter(child => {\n                    // we have to make sure that child.name isn't in the techOrder since\n                    // techs are registered as Components but can't aren't compatible\n                    // See https://github.com/videojs/video.js/issues/2772\n                    const c = Component$1.getComponent(child.opts.componentClass || toTitleCase$1(child.name));\n                    return c && !Tech.isTech(c);\n                }).forEach(handleAdd);\n            }\n        }\n\n        /**\n         * Builds the default DOM class name. Should be overridden by sub-components.\n         *\n         * @return {string}\n         *         The DOM class name for this object.\n         *\n         * @abstract\n         */\n        buildCSSClass() {\n            // Child classes can include a function that does:\n            // return 'CLASS NAME' + this._super();\n            return '';\n        }\n\n        /**\n         * Bind a listener to the component's ready state.\n         * Different from event listeners in that if the ready event has already happened\n         * it will trigger the function immediately.\n         *\n         * @param {ReadyCallback} fn\n         *        Function that gets called when the `Component` is ready.\n         *\n         * @return {Component}\n         *         Returns itself; method can be chained.\n         */\n        ready(fn, sync = false) {\n            if (!fn) {\n                return;\n            }\n            if (!this.isReady_) {\n                this.readyQueue_ = this.readyQueue_ || [];\n                this.readyQueue_.push(fn);\n                return;\n            }\n            if (sync) {\n                fn.call(this);\n            } else {\n                // Call the function asynchronously by default for consistency\n                this.setTimeout(fn, 1);\n            }\n        }\n\n        /**\n         * Trigger all the ready listeners for this `Component`.\n         *\n         * @fires Component#ready\n         */\n        triggerReady() {\n            this.isReady_ = true;\n\n            // Ensure ready is triggered asynchronously\n            this.setTimeout(function () {\n                const readyQueue = this.readyQueue_;\n\n                // Reset Ready Queue\n                this.readyQueue_ = [];\n                if (readyQueue && readyQueue.length > 0) {\n                    readyQueue.forEach(function (fn) {\n                        fn.call(this);\n                    }, this);\n                }\n\n                // Allow for using event listeners also\n                /**\n                 * Triggered when a `Component` is ready.\n                 *\n                 * @event Component#ready\n                 * @type {Event}\n                 */\n                this.trigger('ready');\n            }, 1);\n        }\n\n        /**\n         * Find a single DOM element matching a `selector`. This can be within the `Component`s\n         * `contentEl()` or another custom context.\n         *\n         * @param {string} selector\n         *        A valid CSS selector, which will be passed to `querySelector`.\n         *\n         * @param {Element|string} [context=this.contentEl()]\n         *        A DOM element within which to query. Can also be a selector string in\n         *        which case the first matching element will get used as context. If\n         *        missing `this.contentEl()` gets used. If  `this.contentEl()` returns\n         *        nothing it falls back to `document`.\n         *\n         * @return {Element|null}\n         *         the dom element that was found, or null\n         *\n         * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors)\n         */\n        $(selector, context) {\n            return $(selector, context || this.contentEl());\n        }\n\n        /**\n         * Finds all DOM element matching a `selector`. This can be within the `Component`s\n         * `contentEl()` or another custom context.\n         *\n         * @param {string} selector\n         *        A valid CSS selector, which will be passed to `querySelectorAll`.\n         *\n         * @param {Element|string} [context=this.contentEl()]\n         *        A DOM element within which to query. Can also be a selector string in\n         *        which case the first matching element will get used as context. If\n         *        missing `this.contentEl()` gets used. If  `this.contentEl()` returns\n         *        nothing it falls back to `document`.\n         *\n         * @return {NodeList}\n         *         a list of dom elements that were found\n         *\n         * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors)\n         */\n        $$(selector, context) {\n            return $$(selector, context || this.contentEl());\n        }\n\n        /**\n         * Check if a component's element has a CSS class name.\n         *\n         * @param {string} classToCheck\n         *        CSS class name to check.\n         *\n         * @return {boolean}\n         *         - True if the `Component` has the class.\n         *         - False if the `Component` does not have the class`\n         */\n        hasClass(classToCheck) {\n            return hasClass(this.el_, classToCheck);\n        }\n\n        /**\n         * Add a CSS class name to the `Component`s element.\n         *\n         * @param {...string} classesToAdd\n         *        One or more CSS class name to add.\n         */\n        addClass(...classesToAdd) {\n            addClass(this.el_, ...classesToAdd);\n        }\n\n        /**\n         * Remove a CSS class name from the `Component`s element.\n         *\n         * @param {...string} classesToRemove\n         *        One or more CSS class name to remove.\n         */\n        removeClass(...classesToRemove) {\n            removeClass(this.el_, ...classesToRemove);\n        }\n\n        /**\n         * Add or remove a CSS class name from the component's element.\n         * - `classToToggle` gets added when {@link Component#hasClass} would return false.\n         * - `classToToggle` gets removed when {@link Component#hasClass} would return true.\n         *\n         * @param  {string} classToToggle\n         *         The class to add or remove based on (@link Component#hasClass}\n         *\n         * @param  {boolean|Dom~predicate} [predicate]\n         *         An {@link Dom~predicate} function or a boolean\n         */\n        toggleClass(classToToggle, predicate) {\n            toggleClass(this.el_, classToToggle, predicate);\n        }\n\n        /**\n         * Show the `Component`s element if it is hidden by removing the\n         * 'vjs-hidden' class name from it.\n         */\n        show() {\n            this.removeClass('vjs-hidden');\n        }\n\n        /**\n         * Hide the `Component`s element if it is currently showing by adding the\n         * 'vjs-hidden` class name to it.\n         */\n        hide() {\n            this.addClass('vjs-hidden');\n        }\n\n        /**\n         * Lock a `Component`s element in its visible state by adding the 'vjs-lock-showing'\n         * class name to it. Used during fadeIn/fadeOut.\n         *\n         * @private\n         */\n        lockShowing() {\n            this.addClass('vjs-lock-showing');\n        }\n\n        /**\n         * Unlock a `Component`s element from its visible state by removing the 'vjs-lock-showing'\n         * class name from it. Used during fadeIn/fadeOut.\n         *\n         * @private\n         */\n        unlockShowing() {\n            this.removeClass('vjs-lock-showing');\n        }\n\n        /**\n         * Get the value of an attribute on the `Component`s element.\n         *\n         * @param {string} attribute\n         *        Name of the attribute to get the value from.\n         *\n         * @return {string|null}\n         *         - The value of the attribute that was asked for.\n         *         - Can be an empty string on some browsers if the attribute does not exist\n         *           or has no value\n         *         - Most browsers will return null if the attribute does not exist or has\n         *           no value.\n         *\n         * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/getAttribute}\n         */\n        getAttribute(attribute) {\n            return getAttribute(this.el_, attribute);\n        }\n\n        /**\n         * Set the value of an attribute on the `Component`'s element\n         *\n         * @param {string} attribute\n         *        Name of the attribute to set.\n         *\n         * @param {string} value\n         *        Value to set the attribute to.\n         *\n         * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/setAttribute}\n         */\n        setAttribute(attribute, value) {\n            setAttribute(this.el_, attribute, value);\n        }\n\n        /**\n         * Remove an attribute from the `Component`s element.\n         *\n         * @param {string} attribute\n         *        Name of the attribute to remove.\n         *\n         * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/removeAttribute}\n         */\n        removeAttribute(attribute) {\n            removeAttribute(this.el_, attribute);\n        }\n\n        /**\n         * Get or set the width of the component based upon the CSS styles.\n         * See {@link Component#dimension} for more detailed information.\n         *\n         * @param {number|string} [num]\n         *        The width that you want to set postfixed with '%', 'px' or nothing.\n         *\n         * @param {boolean} [skipListeners]\n         *        Skip the componentresize event trigger\n         *\n         * @return {number|string}\n         *         The width when getting, zero if there is no width. Can be a string\n         *           postpixed with '%' or 'px'.\n         */\n        width(num, skipListeners) {\n            return this.dimension('width', num, skipListeners);\n        }\n\n        /**\n         * Get or set the height of the component based upon the CSS styles.\n         * See {@link Component#dimension} for more detailed information.\n         *\n         * @param {number|string} [num]\n         *        The height that you want to set postfixed with '%', 'px' or nothing.\n         *\n         * @param {boolean} [skipListeners]\n         *        Skip the componentresize event trigger\n         *\n         * @return {number|string}\n         *         The width when getting, zero if there is no width. Can be a string\n         *         postpixed with '%' or 'px'.\n         */\n        height(num, skipListeners) {\n            return this.dimension('height', num, skipListeners);\n        }\n\n        /**\n         * Set both the width and height of the `Component` element at the same time.\n         *\n         * @param  {number|string} width\n         *         Width to set the `Component`s element to.\n         *\n         * @param  {number|string} height\n         *         Height to set the `Component`s element to.\n         */\n        dimensions(width, height) {\n            // Skip componentresize listeners on width for optimization\n            this.width(width, true);\n            this.height(height);\n        }\n\n        /**\n         * Get or set width or height of the `Component` element. This is the shared code\n         * for the {@link Component#width} and {@link Component#height}.\n         *\n         * Things to know:\n         * - If the width or height in an number this will return the number postfixed with 'px'.\n         * - If the width/height is a percent this will return the percent postfixed with '%'\n         * - Hidden elements have a width of 0 with `window.getComputedStyle`. This function\n         *   defaults to the `Component`s `style.width` and falls back to `window.getComputedStyle`.\n         *   See [this]{@link http://www.foliotek.com/devblog/getting-the-width-of-a-hidden-element-with-jquery-using-width/}\n         *   for more information\n         * - If you want the computed style of the component, use {@link Component#currentWidth}\n         *   and {@link {Component#currentHeight}\n         *\n         * @fires Component#componentresize\n         *\n         * @param {string} widthOrHeight\n         8        'width' or 'height'\n         *\n         * @param  {number|string} [num]\n         8         New dimension\n         *\n         * @param  {boolean} [skipListeners]\n         *         Skip componentresize event trigger\n         *\n         * @return {number}\n         *         The dimension when getting or 0 if unset\n         */\n        dimension(widthOrHeight, num, skipListeners) {\n            if (num !== undefined) {\n                // Set to zero if null or literally NaN (NaN !== NaN)\n                if (num === null || num !== num) {\n                    num = 0;\n                }\n\n                // Check if using css width/height (% or px) and adjust\n                if (('' + num).indexOf('%') !== -1 || ('' + num).indexOf('px') !== -1) {\n                    this.el_.style[widthOrHeight] = num;\n                } else if (num === 'auto') {\n                    this.el_.style[widthOrHeight] = '';\n                } else {\n                    this.el_.style[widthOrHeight] = num + 'px';\n                }\n\n                // skipListeners allows us to avoid triggering the resize event when setting both width and height\n                if (!skipListeners) {\n                    /**\n                     * Triggered when a component is resized.\n                     *\n                     * @event Component#componentresize\n                     * @type {Event}\n                     */\n                    this.trigger('componentresize');\n                }\n                return;\n            }\n\n            // Not setting a value, so getting it\n            // Make sure element exists\n            if (!this.el_) {\n                return 0;\n            }\n\n            // Get dimension value from style\n            const val = this.el_.style[widthOrHeight];\n            const pxIndex = val.indexOf('px');\n            if (pxIndex !== -1) {\n                // Return the pixel value with no 'px'\n                return parseInt(val.slice(0, pxIndex), 10);\n            }\n\n            // No px so using % or no style was set, so falling back to offsetWidth/height\n            // If component has display:none, offset will return 0\n            // TODO: handle display:none and no dimension style using px\n            return parseInt(this.el_['offset' + toTitleCase$1(widthOrHeight)], 10);\n        }\n\n        /**\n         * Get the computed width or the height of the component's element.\n         *\n         * Uses `window.getComputedStyle`.\n         *\n         * @param {string} widthOrHeight\n         *        A string containing 'width' or 'height'. Whichever one you want to get.\n         *\n         * @return {number}\n         *         The dimension that gets asked for or 0 if nothing was set\n         *         for that dimension.\n         */\n        currentDimension(widthOrHeight) {\n            let computedWidthOrHeight = 0;\n            if (widthOrHeight !== 'width' && widthOrHeight !== 'height') {\n                throw new Error('currentDimension only accepts width or height value');\n            }\n            computedWidthOrHeight = computedStyle(this.el_, widthOrHeight);\n\n            // remove 'px' from variable and parse as integer\n            computedWidthOrHeight = parseFloat(computedWidthOrHeight);\n\n            // if the computed value is still 0, it's possible that the browser is lying\n            // and we want to check the offset values.\n            // This code also runs wherever getComputedStyle doesn't exist.\n            if (computedWidthOrHeight === 0 || isNaN(computedWidthOrHeight)) {\n                const rule = `offset${toTitleCase$1(widthOrHeight)}`;\n                computedWidthOrHeight = this.el_[rule];\n            }\n            return computedWidthOrHeight;\n        }\n\n        /**\n         * An object that contains width and height values of the `Component`s\n         * computed style. Uses `window.getComputedStyle`.\n         *\n         * @typedef {Object} Component~DimensionObject\n         *\n         * @property {number} width\n         *           The width of the `Component`s computed style.\n         *\n         * @property {number} height\n         *           The height of the `Component`s computed style.\n         */\n\n        /**\n         * Get an object that contains computed width and height values of the\n         * component's element.\n         *\n         * Uses `window.getComputedStyle`.\n         *\n         * @return {Component~DimensionObject}\n         *         The computed dimensions of the component's element.\n         */\n        currentDimensions() {\n            return {\n                width: this.currentDimension('width'),\n                height: this.currentDimension('height')\n            };\n        }\n\n        /**\n         * Get the computed width of the component's element.\n         *\n         * Uses `window.getComputedStyle`.\n         *\n         * @return {number}\n         *         The computed width of the component's element.\n         */\n        currentWidth() {\n            return this.currentDimension('width');\n        }\n\n        /**\n         * Get the computed height of the component's element.\n         *\n         * Uses `window.getComputedStyle`.\n         *\n         * @return {number}\n         *         The computed height of the component's element.\n         */\n        currentHeight() {\n            return this.currentDimension('height');\n        }\n\n        /**\n         * Set the focus to this component\n         */\n        focus() {\n            this.el_.focus();\n        }\n\n        /**\n         * Remove the focus from this component\n         */\n        blur() {\n            this.el_.blur();\n        }\n\n        /**\n         * When this Component receives a `keydown` event which it does not process,\n         *  it passes the event to the Player for handling.\n         *\n         * @param {KeyboardEvent} event\n         *        The `keydown` event that caused this function to be called.\n         */\n        handleKeyDown(event) {\n            if (this.player_) {\n                // We only stop propagation here because we want unhandled events to fall\n                // back to the browser. Exclude Tab for focus trapping.\n                if (!keycode.isEventKey(event, 'Tab')) {\n                    event.stopPropagation();\n                }\n                this.player_.handleKeyDown(event);\n            }\n        }\n\n        /**\n         * Many components used to have a `handleKeyPress` method, which was poorly\n         * named because it listened to a `keydown` event. This method name now\n         * delegates to `handleKeyDown`. This means anyone calling `handleKeyPress`\n         * will not see their method calls stop working.\n         *\n         * @param {Event} event\n         *        The event that caused this function to be called.\n         */\n        handleKeyPress(event) {\n            this.handleKeyDown(event);\n        }\n\n        /**\n         * Emit a 'tap' events when touch event support gets detected. This gets used to\n         * support toggling the controls through a tap on the video. They get enabled\n         * because every sub-component would have extra overhead otherwise.\n         *\n         * @private\n         * @fires Component#tap\n         * @listens Component#touchstart\n         * @listens Component#touchmove\n         * @listens Component#touchleave\n         * @listens Component#touchcancel\n         * @listens Component#touchend\n         */\n        emitTapEvents() {\n            // Track the start time so we can determine how long the touch lasted\n            let touchStart = 0;\n            let firstTouch = null;\n\n            // Maximum movement allowed during a touch event to still be considered a tap\n            // Other popular libs use anywhere from 2 (hammer.js) to 15,\n            // so 10 seems like a nice, round number.\n            const tapMovementThreshold = 10;\n\n            // The maximum length a touch can be while still being considered a tap\n            const touchTimeThreshold = 200;\n            let couldBeTap;\n            this.on('touchstart', function (event) {\n                // If more than one finger, don't consider treating this as a click\n                if (event.touches.length === 1) {\n                    // Copy pageX/pageY from the object\n                    firstTouch = {\n                        pageX: event.touches[0].pageX,\n                        pageY: event.touches[0].pageY\n                    };\n                    // Record start time so we can detect a tap vs. \"touch and hold\"\n                    touchStart = window.performance.now();\n                    // Reset couldBeTap tracking\n                    couldBeTap = true;\n                }\n            });\n            this.on('touchmove', function (event) {\n                // If more than one finger, don't consider treating this as a click\n                if (event.touches.length > 1) {\n                    couldBeTap = false;\n                } else if (firstTouch) {\n                    // Some devices will throw touchmoves for all but the slightest of taps.\n                    // So, if we moved only a small distance, this could still be a tap\n                    const xdiff = event.touches[0].pageX - firstTouch.pageX;\n                    const ydiff = event.touches[0].pageY - firstTouch.pageY;\n                    const touchDistance = Math.sqrt(xdiff * xdiff + ydiff * ydiff);\n                    if (touchDistance > tapMovementThreshold) {\n                        couldBeTap = false;\n                    }\n                }\n            });\n            const noTap = function () {\n                couldBeTap = false;\n            };\n\n            // TODO: Listen to the original target. http://youtu.be/DujfpXOKUp8?t=13m8s\n            this.on('touchleave', noTap);\n            this.on('touchcancel', noTap);\n\n            // When the touch ends, measure how long it took and trigger the appropriate\n            // event\n            this.on('touchend', function (event) {\n                firstTouch = null;\n                // Proceed only if the touchmove/leave/cancel event didn't happen\n                if (couldBeTap === true) {\n                    // Measure how long the touch lasted\n                    const touchTime = window.performance.now() - touchStart;\n\n                    // Make sure the touch was less than the threshold to be considered a tap\n                    if (touchTime < touchTimeThreshold) {\n                        // Don't let browser turn this into a click\n                        event.preventDefault();\n                        /**\n                         * Triggered when a `Component` is tapped.\n                         *\n                         * @event Component#tap\n                         * @type {MouseEvent}\n                         */\n                        this.trigger('tap');\n                        // It may be good to copy the touchend event object and change the\n                        // type to tap, if the other event properties aren't exact after\n                        // Events.fixEvent runs (e.g. event.target)\n                    }\n                }\n            });\n        }\n\n        /**\n         * This function reports user activity whenever touch events happen. This can get\n         * turned off by any sub-components that wants touch events to act another way.\n         *\n         * Report user touch activity when touch events occur. User activity gets used to\n         * determine when controls should show/hide. It is simple when it comes to mouse\n         * events, because any mouse event should show the controls. So we capture mouse\n         * events that bubble up to the player and report activity when that happens.\n         * With touch events it isn't as easy as `touchstart` and `touchend` toggle player\n         * controls. So touch events can't help us at the player level either.\n         *\n         * User activity gets checked asynchronously. So what could happen is a tap event\n         * on the video turns the controls off. Then the `touchend` event bubbles up to\n         * the player. Which, if it reported user activity, would turn the controls right\n         * back on. We also don't want to completely block touch events from bubbling up.\n         * Furthermore a `touchmove` event and anything other than a tap, should not turn\n         * controls back on.\n         *\n         * @listens Component#touchstart\n         * @listens Component#touchmove\n         * @listens Component#touchend\n         * @listens Component#touchcancel\n         */\n        enableTouchActivity() {\n            // Don't continue if the root player doesn't support reporting user activity\n            if (!this.player() || !this.player().reportUserActivity) {\n                return;\n            }\n\n            // listener for reporting that the user is active\n            const report = bind_(this.player(), this.player().reportUserActivity);\n            let touchHolding;\n            this.on('touchstart', function () {\n                report();\n                // For as long as the they are touching the device or have their mouse down,\n                // we consider them active even if they're not moving their finger or mouse.\n                // So we want to continue to update that they are active\n                this.clearInterval(touchHolding);\n                // report at the same interval as activityCheck\n                touchHolding = this.setInterval(report, 250);\n            });\n            const touchEnd = function (event) {\n                report();\n                // stop the interval that maintains activity if the touch is holding\n                this.clearInterval(touchHolding);\n            };\n            this.on('touchmove', report);\n            this.on('touchend', touchEnd);\n            this.on('touchcancel', touchEnd);\n        }\n\n        /**\n         * A callback that has no parameters and is bound into `Component`s context.\n         *\n         * @callback Component~GenericCallback\n         * @this Component\n         */\n\n        /**\n         * Creates a function that runs after an `x` millisecond timeout. This function is a\n         * wrapper around `window.setTimeout`. There are a few reasons to use this one\n         * instead though:\n         * 1. It gets cleared via  {@link Component#clearTimeout} when\n         *    {@link Component#dispose} gets called.\n         * 2. The function callback will gets turned into a {@link Component~GenericCallback}\n         *\n         * > Note: You can't use `window.clearTimeout` on the id returned by this function. This\n         *         will cause its dispose listener not to get cleaned up! Please use\n         *         {@link Component#clearTimeout} or {@link Component#dispose} instead.\n         *\n         * @param {Component~GenericCallback} fn\n         *        The function that will be run after `timeout`.\n         *\n         * @param {number} timeout\n         *        Timeout in milliseconds to delay before executing the specified function.\n         *\n         * @return {number}\n         *         Returns a timeout ID that gets used to identify the timeout. It can also\n         *         get used in {@link Component#clearTimeout} to clear the timeout that\n         *         was set.\n         *\n         * @listens Component#dispose\n         * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setTimeout}\n         */\n        setTimeout(fn, timeout) {\n            // declare as variables so they are properly available in timeout function\n            // eslint-disable-next-line\n            var timeoutId;\n            fn = bind_(this, fn);\n            this.clearTimersOnDispose_();\n            timeoutId = window.setTimeout(() => {\n                if (this.setTimeoutIds_.has(timeoutId)) {\n                    this.setTimeoutIds_.delete(timeoutId);\n                }\n                fn();\n            }, timeout);\n            this.setTimeoutIds_.add(timeoutId);\n            return timeoutId;\n        }\n\n        /**\n         * Clears a timeout that gets created via `window.setTimeout` or\n         * {@link Component#setTimeout}. If you set a timeout via {@link Component#setTimeout}\n         * use this function instead of `window.clearTimout`. If you don't your dispose\n         * listener will not get cleaned up until {@link Component#dispose}!\n         *\n         * @param {number} timeoutId\n         *        The id of the timeout to clear. The return value of\n         *        {@link Component#setTimeout} or `window.setTimeout`.\n         *\n         * @return {number}\n         *         Returns the timeout id that was cleared.\n         *\n         * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearTimeout}\n         */\n        clearTimeout(timeoutId) {\n            if (this.setTimeoutIds_.has(timeoutId)) {\n                this.setTimeoutIds_.delete(timeoutId);\n                window.clearTimeout(timeoutId);\n            }\n            return timeoutId;\n        }\n\n        /**\n         * Creates a function that gets run every `x` milliseconds. This function is a wrapper\n         * around `window.setInterval`. There are a few reasons to use this one instead though.\n         * 1. It gets cleared via  {@link Component#clearInterval} when\n         *    {@link Component#dispose} gets called.\n         * 2. The function callback will be a {@link Component~GenericCallback}\n         *\n         * @param {Component~GenericCallback} fn\n         *        The function to run every `x` seconds.\n         *\n         * @param {number} interval\n         *        Execute the specified function every `x` milliseconds.\n         *\n         * @return {number}\n         *         Returns an id that can be used to identify the interval. It can also be be used in\n         *         {@link Component#clearInterval} to clear the interval.\n         *\n         * @listens Component#dispose\n         * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setInterval}\n         */\n        setInterval(fn, interval) {\n            fn = bind_(this, fn);\n            this.clearTimersOnDispose_();\n            const intervalId = window.setInterval(fn, interval);\n            this.setIntervalIds_.add(intervalId);\n            return intervalId;\n        }\n\n        /**\n         * Clears an interval that gets created via `window.setInterval` or\n         * {@link Component#setInterval}. If you set an interval via {@link Component#setInterval}\n         * use this function instead of `window.clearInterval`. If you don't your dispose\n         * listener will not get cleaned up until {@link Component#dispose}!\n         *\n         * @param {number} intervalId\n         *        The id of the interval to clear. The return value of\n         *        {@link Component#setInterval} or `window.setInterval`.\n         *\n         * @return {number}\n         *         Returns the interval id that was cleared.\n         *\n         * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearInterval}\n         */\n        clearInterval(intervalId) {\n            if (this.setIntervalIds_.has(intervalId)) {\n                this.setIntervalIds_.delete(intervalId);\n                window.clearInterval(intervalId);\n            }\n            return intervalId;\n        }\n\n        /**\n         * Queues up a callback to be passed to requestAnimationFrame (rAF), but\n         * with a few extra bonuses:\n         *\n         * - Supports browsers that do not support rAF by falling back to\n         *   {@link Component#setTimeout}.\n         *\n         * - The callback is turned into a {@link Component~GenericCallback} (i.e.\n         *   bound to the component).\n         *\n         * - Automatic cancellation of the rAF callback is handled if the component\n         *   is disposed before it is called.\n         *\n         * @param  {Component~GenericCallback} fn\n         *         A function that will be bound to this component and executed just\n         *         before the browser's next repaint.\n         *\n         * @return {number}\n         *         Returns an rAF ID that gets used to identify the timeout. It can\n         *         also be used in {@link Component#cancelAnimationFrame} to cancel\n         *         the animation frame callback.\n         *\n         * @listens Component#dispose\n         * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/requestAnimationFrame}\n         */\n        requestAnimationFrame(fn) {\n            this.clearTimersOnDispose_();\n\n            // declare as variables so they are properly available in rAF function\n            // eslint-disable-next-line\n            var id;\n            fn = bind_(this, fn);\n            id = window.requestAnimationFrame(() => {\n                if (this.rafIds_.has(id)) {\n                    this.rafIds_.delete(id);\n                }\n                fn();\n            });\n            this.rafIds_.add(id);\n            return id;\n        }\n\n        /**\n         * Request an animation frame, but only one named animation\n         * frame will be queued. Another will never be added until\n         * the previous one finishes.\n         *\n         * @param {string} name\n         *        The name to give this requestAnimationFrame\n         *\n         * @param  {Component~GenericCallback} fn\n         *         A function that will be bound to this component and executed just\n         *         before the browser's next repaint.\n         */\n        requestNamedAnimationFrame(name, fn) {\n            if (this.namedRafs_.has(name)) {\n                return;\n            }\n            this.clearTimersOnDispose_();\n            fn = bind_(this, fn);\n            const id = this.requestAnimationFrame(() => {\n                fn();\n                if (this.namedRafs_.has(name)) {\n                    this.namedRafs_.delete(name);\n                }\n            });\n            this.namedRafs_.set(name, id);\n            return name;\n        }\n\n        /**\n         * Cancels a current named animation frame if it exists.\n         *\n         * @param {string} name\n         *        The name of the requestAnimationFrame to cancel.\n         */\n        cancelNamedAnimationFrame(name) {\n            if (!this.namedRafs_.has(name)) {\n                return;\n            }\n            this.cancelAnimationFrame(this.namedRafs_.get(name));\n            this.namedRafs_.delete(name);\n        }\n\n        /**\n         * Cancels a queued callback passed to {@link Component#requestAnimationFrame}\n         * (rAF).\n         *\n         * If you queue an rAF callback via {@link Component#requestAnimationFrame},\n         * use this function instead of `window.cancelAnimationFrame`. If you don't,\n         * your dispose listener will not get cleaned up until {@link Component#dispose}!\n         *\n         * @param {number} id\n         *        The rAF ID to clear. The return value of {@link Component#requestAnimationFrame}.\n         *\n         * @return {number}\n         *         Returns the rAF ID that was cleared.\n         *\n         * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/cancelAnimationFrame}\n         */\n        cancelAnimationFrame(id) {\n            if (this.rafIds_.has(id)) {\n                this.rafIds_.delete(id);\n                window.cancelAnimationFrame(id);\n            }\n            return id;\n        }\n\n        /**\n         * A function to setup `requestAnimationFrame`, `setTimeout`,\n         * and `setInterval`, clearing on dispose.\n         *\n         * > Previously each timer added and removed dispose listeners on it's own.\n         * For better performance it was decided to batch them all, and use `Set`s\n         * to track outstanding timer ids.\n         *\n         * @private\n         */\n        clearTimersOnDispose_() {\n            if (this.clearingTimersOnDispose_) {\n                return;\n            }\n            this.clearingTimersOnDispose_ = true;\n            this.one('dispose', () => {\n                [['namedRafs_', 'cancelNamedAnimationFrame'], ['rafIds_', 'cancelAnimationFrame'], ['setTimeoutIds_', 'clearTimeout'], ['setIntervalIds_', 'clearInterval']].forEach(([idName, cancelName]) => {\n                    // for a `Set` key will actually be the value again\n                    // so forEach((val, val) =>` but for maps we want to use\n                    // the key.\n                    this[idName].forEach((val, key) => this[cancelName](key));\n                });\n                this.clearingTimersOnDispose_ = false;\n            });\n        }\n\n        /**\n         * Register a `Component` with `videojs` given the name and the component.\n         *\n         * > NOTE: {@link Tech}s should not be registered as a `Component`. {@link Tech}s\n         *         should be registered using {@link Tech.registerTech} or\n         *         {@link videojs:videojs.registerTech}.\n         *\n         * > NOTE: This function can also be seen on videojs as\n         *         {@link videojs:videojs.registerComponent}.\n         *\n         * @param {string} name\n         *        The name of the `Component` to register.\n         *\n         * @param {Component} ComponentToRegister\n         *        The `Component` class to register.\n         *\n         * @return {Component}\n         *         The `Component` that was registered.\n         */\n        static registerComponent(name, ComponentToRegister) {\n            if (typeof name !== 'string' || !name) {\n                throw new Error(`Illegal component name, \"${name}\"; must be a non-empty string.`);\n            }\n            const Tech = Component$1.getComponent('Tech');\n\n            // We need to make sure this check is only done if Tech has been registered.\n            const isTech = Tech && Tech.isTech(ComponentToRegister);\n            const isComp = Component$1 === ComponentToRegister || Component$1.prototype.isPrototypeOf(ComponentToRegister.prototype);\n            if (isTech || !isComp) {\n                let reason;\n                if (isTech) {\n                    reason = 'techs must be registered using Tech.registerTech()';\n                } else {\n                    reason = 'must be a Component subclass';\n                }\n                throw new Error(`Illegal component, \"${name}\"; ${reason}.`);\n            }\n            name = toTitleCase$1(name);\n            if (!Component$1.components_) {\n                Component$1.components_ = {};\n            }\n            const Player = Component$1.getComponent('Player');\n            if (name === 'Player' && Player && Player.players) {\n                const players = Player.players;\n                const playerNames = Object.keys(players);\n\n                // If we have players that were disposed, then their name will still be\n                // in Players.players. So, we must loop through and verify that the value\n                // for each item is not null. This allows registration of the Player component\n                // after all players have been disposed or before any were created.\n                if (players && playerNames.length > 0 && playerNames.map(pname => players[pname]).every(Boolean)) {\n                    throw new Error('Can not register Player component after player has been created.');\n                }\n            }\n            Component$1.components_[name] = ComponentToRegister;\n            Component$1.components_[toLowerCase(name)] = ComponentToRegister;\n            return ComponentToRegister;\n        }\n\n        /**\n         * Get a `Component` based on the name it was registered with.\n         *\n         * @param {string} name\n         *        The Name of the component to get.\n         *\n         * @return {Component}\n         *         The `Component` that got registered under the given name.\n         */\n        static getComponent(name) {\n            if (!name || !Component$1.components_) {\n                return;\n            }\n            return Component$1.components_[name];\n        }\n    }\n    Component$1.registerComponent('Component', Component$1);\n\n    /**\n     * @file time.js\n     * @module time\n     */\n\n    /**\n     * Returns the time for the specified index at the start or end\n     * of a TimeRange object.\n     *\n     * @typedef    {Function} TimeRangeIndex\n     *\n     * @param      {number} [index=0]\n     *             The range number to return the time for.\n     *\n     * @return     {number}\n     *             The time offset at the specified index.\n     *\n     * @deprecated The index argument must be provided.\n     *             In the future, leaving it out will throw an error.\n     */\n\n    /**\n     * An object that contains ranges of time, which mimics {@link TimeRanges}.\n     *\n     * @typedef  {Object} TimeRange\n     *\n     * @property {number} length\n     *           The number of time ranges represented by this object.\n     *\n     * @property {module:time~TimeRangeIndex} start\n     *           Returns the time offset at which a specified time range begins.\n     *\n     * @property {module:time~TimeRangeIndex} end\n     *           Returns the time offset at which a specified time range ends.\n     *\n     * @see https://developer.mozilla.org/en-US/docs/Web/API/TimeRanges\n     */\n\n    /**\n     * Check if any of the time ranges are over the maximum index.\n     *\n     * @private\n     * @param   {string} fnName\n     *          The function name to use for logging\n     *\n     * @param   {number} index\n     *          The index to check\n     *\n     * @param   {number} maxIndex\n     *          The maximum possible index\n     *\n     * @throws  {Error} if the timeRanges provided are over the maxIndex\n     */\n    function rangeCheck(fnName, index, maxIndex) {\n        if (typeof index !== 'number' || index < 0 || index > maxIndex) {\n            throw new Error(`Failed to execute '${fnName}' on 'TimeRanges': The index provided (${index}) is non-numeric or out of bounds (0-${maxIndex}).`);\n        }\n    }\n\n    /**\n     * Get the time for the specified index at the start or end\n     * of a TimeRange object.\n     *\n     * @private\n     * @param      {string} fnName\n     *             The function name to use for logging\n     *\n     * @param      {string} valueIndex\n     *             The property that should be used to get the time. should be\n     *             'start' or 'end'\n     *\n     * @param      {Array} ranges\n     *             An array of time ranges\n     *\n     * @param      {Array} [rangeIndex=0]\n     *             The index to start the search at\n     *\n     * @return     {number}\n     *             The time that offset at the specified index.\n     *\n     * @deprecated rangeIndex must be set to a value, in the future this will throw an error.\n     * @throws     {Error} if rangeIndex is more than the length of ranges\n     */\n    function getRange(fnName, valueIndex, ranges, rangeIndex) {\n        rangeCheck(fnName, rangeIndex, ranges.length - 1);\n        return ranges[rangeIndex][valueIndex];\n    }\n\n    /**\n     * Create a time range object given ranges of time.\n     *\n     * @private\n     * @param   {Array} [ranges]\n     *          An array of time ranges.\n     *\n     * @return  {TimeRange}\n     */\n    function createTimeRangesObj(ranges) {\n        let timeRangesObj;\n        if (ranges === undefined || ranges.length === 0) {\n            timeRangesObj = {\n                length: 0,\n                start() {\n                    throw new Error('This TimeRanges object is empty');\n                },\n                end() {\n                    throw new Error('This TimeRanges object is empty');\n                }\n            };\n        } else {\n            timeRangesObj = {\n                length: ranges.length,\n                start: getRange.bind(null, 'start', 0, ranges),\n                end: getRange.bind(null, 'end', 1, ranges)\n            };\n        }\n        if (window.Symbol && window.Symbol.iterator) {\n            timeRangesObj[window.Symbol.iterator] = () => (ranges || []).values();\n        }\n        return timeRangesObj;\n    }\n\n    /**\n     * Create a `TimeRange` object which mimics an\n     * {@link https://developer.mozilla.org/en-US/docs/Web/API/TimeRanges|HTML5 TimeRanges instance}.\n     *\n     * @param {number|Array[]} start\n     *        The start of a single range (a number) or an array of ranges (an\n     *        array of arrays of two numbers each).\n     *\n     * @param {number} end\n     *        The end of a single range. Cannot be used with the array form of\n     *        the `start` argument.\n     *\n     * @return {TimeRange}\n     */\n    function createTimeRanges$1(start, end) {\n        if (Array.isArray(start)) {\n            return createTimeRangesObj(start);\n        } else if (start === undefined || end === undefined) {\n            return createTimeRangesObj();\n        }\n        return createTimeRangesObj([[start, end]]);\n    }\n\n    /**\n     * Format seconds as a time string, H:MM:SS or M:SS. Supplying a guide (in\n     * seconds) will force a number of leading zeros to cover the length of the\n     * guide.\n     *\n     * @private\n     * @param  {number} seconds\n     *         Number of seconds to be turned into a string\n     *\n     * @param  {number} guide\n     *         Number (in seconds) to model the string after\n     *\n     * @return {string}\n     *         Time formatted as H:MM:SS or M:SS\n     */\n    const defaultImplementation = function (seconds, guide) {\n        seconds = seconds < 0 ? 0 : seconds;\n        let s = Math.floor(seconds % 60);\n        let m = Math.floor(seconds / 60 % 60);\n        let h = Math.floor(seconds / 3600);\n        const gm = Math.floor(guide / 60 % 60);\n        const gh = Math.floor(guide / 3600);\n\n        // handle invalid times\n        if (isNaN(seconds) || seconds === Infinity) {\n            // '-' is false for all relational operators (e.g. <, >=) so this setting\n            // will add the minimum number of fields specified by the guide\n            h = m = s = '-';\n        }\n\n        // Check if we need to show hours\n        h = h > 0 || gh > 0 ? h + ':' : '';\n\n        // If hours are showing, we may need to add a leading zero.\n        // Always show at least one digit of minutes.\n        m = ((h || gm >= 10) && m < 10 ? '0' + m : m) + ':';\n\n        // Check if leading zero is need for seconds\n        s = s < 10 ? '0' + s : s;\n        return h + m + s;\n    };\n\n    // Internal pointer to the current implementation.\n    let implementation = defaultImplementation;\n\n    /**\n     * Replaces the default formatTime implementation with a custom implementation.\n     *\n     * @param {Function} customImplementation\n     *        A function which will be used in place of the default formatTime\n     *        implementation. Will receive the current time in seconds and the\n     *        guide (in seconds) as arguments.\n     */\n    function setFormatTime(customImplementation) {\n        implementation = customImplementation;\n    }\n\n    /**\n     * Resets formatTime to the default implementation.\n     */\n    function resetFormatTime() {\n        implementation = defaultImplementation;\n    }\n\n    /**\n     * Delegates to either the default time formatting function or a custom\n     * function supplied via `setFormatTime`.\n     *\n     * Formats seconds as a time string (H:MM:SS or M:SS). Supplying a\n     * guide (in seconds) will force a number of leading zeros to cover the\n     * length of the guide.\n     *\n     * @example  formatTime(125, 600) === \"02:05\"\n     * @param    {number} seconds\n     *           Number of seconds to be turned into a string\n     *\n     * @param    {number} guide\n     *           Number (in seconds) to model the string after\n     *\n     * @return   {string}\n     *           Time formatted as H:MM:SS or M:SS\n     */\n    function formatTime(seconds, guide = seconds) {\n        return implementation(seconds, guide);\n    }\n\n    var Time = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        createTimeRanges: createTimeRanges$1,\n        createTimeRange: createTimeRanges$1,\n        setFormatTime: setFormatTime,\n        resetFormatTime: resetFormatTime,\n        formatTime: formatTime\n    });\n\n    /**\n     * @file buffer.js\n     * @module buffer\n     */\n\n    /**\n     * Compute the percentage of the media that has been buffered.\n     *\n     * @param { import('./time').TimeRange } buffered\n     *        The current `TimeRanges` object representing buffered time ranges\n     *\n     * @param {number} duration\n     *        Total duration of the media\n     *\n     * @return {number}\n     *         Percent buffered of the total duration in decimal form.\n     */\n    function bufferedPercent(buffered, duration) {\n        let bufferedDuration = 0;\n        let start;\n        let end;\n        if (!duration) {\n            return 0;\n        }\n        if (!buffered || !buffered.length) {\n            buffered = createTimeRanges$1(0, 0);\n        }\n        for (let i = 0; i < buffered.length; i++) {\n            start = buffered.start(i);\n            end = buffered.end(i);\n\n            // buffered end can be bigger than duration by a very small fraction\n            if (end > duration) {\n                end = duration;\n            }\n            bufferedDuration += end - start;\n        }\n        return bufferedDuration / duration;\n    }\n\n    /**\n     * @file media-error.js\n     */\n\n    /**\n     * A Custom `MediaError` class which mimics the standard HTML5 `MediaError` class.\n     *\n     * @param {number|string|Object|MediaError} value\n     *        This can be of multiple types:\n     *        - number: should be a standard error code\n     *        - string: an error message (the code will be 0)\n     *        - Object: arbitrary properties\n     *        - `MediaError` (native): used to populate a video.js `MediaError` object\n     *        - `MediaError` (video.js): will return itself if it's already a\n     *          video.js `MediaError` object.\n     *\n     * @see [MediaError Spec]{@link https://dev.w3.org/html5/spec-author-view/video.html#mediaerror}\n     * @see [Encrypted MediaError Spec]{@link https://www.w3.org/TR/2013/WD-encrypted-media-20130510/#error-codes}\n     *\n     * @class MediaError\n     */\n    function MediaError(value) {\n        // Allow redundant calls to this constructor to avoid having `instanceof`\n        // checks peppered around the code.\n        if (value instanceof MediaError) {\n            return value;\n        }\n        if (typeof value === 'number') {\n            this.code = value;\n        } else if (typeof value === 'string') {\n            // default code is zero, so this is a custom error\n            this.message = value;\n        } else if (isObject$1(value)) {\n            // We assign the `code` property manually because native `MediaError` objects\n            // do not expose it as an own/enumerable property of the object.\n            if (typeof value.code === 'number') {\n                this.code = value.code;\n            }\n            Object.assign(this, value);\n        }\n        if (!this.message) {\n            this.message = MediaError.defaultMessages[this.code] || '';\n        }\n    }\n\n    /**\n     * The error code that refers two one of the defined `MediaError` types\n     *\n     * @type {Number}\n     */\n    MediaError.prototype.code = 0;\n\n    /**\n     * An optional message that to show with the error. Message is not part of the HTML5\n     * video spec but allows for more informative custom errors.\n     *\n     * @type {String}\n     */\n    MediaError.prototype.message = '';\n\n    /**\n     * An optional status code that can be set by plugins to allow even more detail about\n     * the error. For example a plugin might provide a specific HTTP status code and an\n     * error message for that code. Then when the plugin gets that error this class will\n     * know how to display an error message for it. This allows a custom message to show\n     * up on the `Player` error overlay.\n     *\n     * @type {Array}\n     */\n    MediaError.prototype.status = null;\n\n    /**\n     * Errors indexed by the W3C standard. The order **CANNOT CHANGE**! See the\n     * specification listed under {@link MediaError} for more information.\n     *\n     * @enum {array}\n     * @readonly\n     * @property {string} 0 - MEDIA_ERR_CUSTOM\n     * @property {string} 1 - MEDIA_ERR_ABORTED\n     * @property {string} 2 - MEDIA_ERR_NETWORK\n     * @property {string} 3 - MEDIA_ERR_DECODE\n     * @property {string} 4 - MEDIA_ERR_SRC_NOT_SUPPORTED\n     * @property {string} 5 - MEDIA_ERR_ENCRYPTED\n     */\n    MediaError.errorTypes = ['MEDIA_ERR_CUSTOM', 'MEDIA_ERR_ABORTED', 'MEDIA_ERR_NETWORK', 'MEDIA_ERR_DECODE', 'MEDIA_ERR_SRC_NOT_SUPPORTED', 'MEDIA_ERR_ENCRYPTED'];\n\n    /**\n     * The default `MediaError` messages based on the {@link MediaError.errorTypes}.\n     *\n     * @type {Array}\n     * @constant\n     */\n    MediaError.defaultMessages = {\n        1: 'You aborted the media playback',\n        2: 'A network error caused the media download to fail part-way.',\n        3: 'The media playback was aborted due to a corruption problem or because the media used features your browser did not support.',\n        4: 'The media could not be loaded, either because the server or network failed or because the format is not supported.',\n        5: 'The media is encrypted and we do not have the keys to decrypt it.'\n    };\n\n    // Add types as properties on MediaError\n    // e.g. MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED = 4;\n    for (let errNum = 0; errNum < MediaError.errorTypes.length; errNum++) {\n        MediaError[MediaError.errorTypes[errNum]] = errNum;\n        // values should be accessible on both the class and instance\n        MediaError.prototype[MediaError.errorTypes[errNum]] = errNum;\n    }\n\n    var tuple = SafeParseTuple;\n    function SafeParseTuple(obj, reviver) {\n        var json;\n        var error = null;\n        try {\n            json = JSON.parse(obj, reviver);\n        } catch (err) {\n            error = err;\n        }\n        return [error, json];\n    }\n\n    /**\n     * Returns whether an object is `Promise`-like (i.e. has a `then` method).\n     *\n     * @param  {Object}  value\n     *         An object that may or may not be `Promise`-like.\n     *\n     * @return {boolean}\n     *         Whether or not the object is `Promise`-like.\n     */\n    function isPromise(value) {\n        return value !== undefined && value !== null && typeof value.then === 'function';\n    }\n\n    /**\n     * Silence a Promise-like object.\n     *\n     * This is useful for avoiding non-harmful, but potentially confusing \"uncaught\n     * play promise\" rejection error messages.\n     *\n     * @param  {Object} value\n     *         An object that may or may not be `Promise`-like.\n     */\n    function silencePromise(value) {\n        if (isPromise(value)) {\n            value.then(null, e => {});\n        }\n    }\n\n    /**\n     * @file text-track-list-converter.js Utilities for capturing text track state and\n     * re-creating tracks based on a capture.\n     *\n     * @module text-track-list-converter\n     */\n\n    /**\n     * Examine a single {@link TextTrack} and return a JSON-compatible javascript object that\n     * represents the {@link TextTrack}'s state.\n     *\n     * @param {TextTrack} track\n     *        The text track to query.\n     *\n     * @return {Object}\n     *         A serializable javascript representation of the TextTrack.\n     * @private\n     */\n    const trackToJson_ = function (track) {\n        const ret = ['kind', 'label', 'language', 'id', 'inBandMetadataTrackDispatchType', 'mode', 'src'].reduce((acc, prop, i) => {\n            if (track[prop]) {\n                acc[prop] = track[prop];\n            }\n            return acc;\n        }, {\n            cues: track.cues && Array.prototype.map.call(track.cues, function (cue) {\n                return {\n                    startTime: cue.startTime,\n                    endTime: cue.endTime,\n                    text: cue.text,\n                    id: cue.id\n                };\n            })\n        });\n        return ret;\n    };\n\n    /**\n     * Examine a {@link Tech} and return a JSON-compatible javascript array that represents the\n     * state of all {@link TextTrack}s currently configured. The return array is compatible with\n     * {@link text-track-list-converter:jsonToTextTracks}.\n     *\n     * @param { import('../tech/tech').default } tech\n     *        The tech object to query\n     *\n     * @return {Array}\n     *         A serializable javascript representation of the {@link Tech}s\n     *         {@link TextTrackList}.\n     */\n    const textTracksToJson = function (tech) {\n        const trackEls = tech.$$('track');\n        const trackObjs = Array.prototype.map.call(trackEls, t => t.track);\n        const tracks = Array.prototype.map.call(trackEls, function (trackEl) {\n            const json = trackToJson_(trackEl.track);\n            if (trackEl.src) {\n                json.src = trackEl.src;\n            }\n            return json;\n        });\n        return tracks.concat(Array.prototype.filter.call(tech.textTracks(), function (track) {\n            return trackObjs.indexOf(track) === -1;\n        }).map(trackToJson_));\n    };\n\n    /**\n     * Create a set of remote {@link TextTrack}s on a {@link Tech} based on an array of javascript\n     * object {@link TextTrack} representations.\n     *\n     * @param {Array} json\n     *        An array of `TextTrack` representation objects, like those that would be\n     *        produced by `textTracksToJson`.\n     *\n     * @param {Tech} tech\n     *        The `Tech` to create the `TextTrack`s on.\n     */\n    const jsonToTextTracks = function (json, tech) {\n        json.forEach(function (track) {\n            const addedTrack = tech.addRemoteTextTrack(track).track;\n            if (!track.src && track.cues) {\n                track.cues.forEach(cue => addedTrack.addCue(cue));\n            }\n        });\n        return tech.textTracks();\n    };\n    var textTrackConverter = {\n        textTracksToJson,\n        jsonToTextTracks,\n        trackToJson_\n    };\n\n    /**\n     * @file modal-dialog.js\n     */\n    const MODAL_CLASS_NAME = 'vjs-modal-dialog';\n\n    /**\n     * The `ModalDialog` displays over the video and its controls, which blocks\n     * interaction with the player until it is closed.\n     *\n     * Modal dialogs include a \"Close\" button and will close when that button\n     * is activated - or when ESC is pressed anywhere.\n     *\n     * @extends Component\n     */\n    class ModalDialog extends Component$1 {\n        /**\n         * Create an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param { import('./utils/dom').ContentDescriptor} [options.content=undefined]\n         *        Provide customized content for this modal.\n         *\n         * @param {string} [options.description]\n         *        A text description for the modal, primarily for accessibility.\n         *\n         * @param {boolean} [options.fillAlways=false]\n         *        Normally, modals are automatically filled only the first time\n         *        they open. This tells the modal to refresh its content\n         *        every time it opens.\n         *\n         * @param {string} [options.label]\n         *        A text label for the modal, primarily for accessibility.\n         *\n         * @param {boolean} [options.pauseOnOpen=true]\n         *        If `true`, playback will will be paused if playing when\n         *        the modal opens, and resumed when it closes.\n         *\n         * @param {boolean} [options.temporary=true]\n         *        If `true`, the modal can only be opened once; it will be\n         *        disposed as soon as it's closed.\n         *\n         * @param {boolean} [options.uncloseable=false]\n         *        If `true`, the user will not be able to close the modal\n         *        through the UI in the normal ways. Programmatic closing is\n         *        still possible.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.handleKeyDown_ = e => this.handleKeyDown(e);\n            this.close_ = e => this.close(e);\n            this.opened_ = this.hasBeenOpened_ = this.hasBeenFilled_ = false;\n            this.closeable(!this.options_.uncloseable);\n            this.content(this.options_.content);\n\n            // Make sure the contentEl is defined AFTER any children are initialized\n            // because we only want the contents of the modal in the contentEl\n            // (not the UI elements like the close button).\n            this.contentEl_ = createEl('div', {\n                className: `${MODAL_CLASS_NAME}-content`\n            }, {\n                role: 'document'\n            });\n            this.descEl_ = createEl('p', {\n                className: `${MODAL_CLASS_NAME}-description vjs-control-text`,\n                id: this.el().getAttribute('aria-describedby')\n            });\n            textContent(this.descEl_, this.description());\n            this.el_.appendChild(this.descEl_);\n            this.el_.appendChild(this.contentEl_);\n        }\n\n        /**\n         * Create the `ModalDialog`'s DOM element\n         *\n         * @return {Element}\n         *         The DOM element that gets created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: this.buildCSSClass(),\n                tabIndex: -1\n            }, {\n                'aria-describedby': `${this.id()}_description`,\n                'aria-hidden': 'true',\n                'aria-label': this.label(),\n                'role': 'dialog'\n            });\n        }\n        dispose() {\n            this.contentEl_ = null;\n            this.descEl_ = null;\n            this.previouslyActiveEl_ = null;\n            super.dispose();\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `${MODAL_CLASS_NAME} vjs-hidden ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * Returns the label string for this modal. Primarily used for accessibility.\n         *\n         * @return {string}\n         *         the localized or raw label of this modal.\n         */\n        label() {\n            return this.localize(this.options_.label || 'Modal Window');\n        }\n\n        /**\n         * Returns the description string for this modal. Primarily used for\n         * accessibility.\n         *\n         * @return {string}\n         *         The localized or raw description of this modal.\n         */\n        description() {\n            let desc = this.options_.description || this.localize('This is a modal window.');\n\n            // Append a universal closeability message if the modal is closeable.\n            if (this.closeable()) {\n                desc += ' ' + this.localize('This modal can be closed by pressing the Escape key or activating the close button.');\n            }\n            return desc;\n        }\n\n        /**\n         * Opens the modal.\n         *\n         * @fires ModalDialog#beforemodalopen\n         * @fires ModalDialog#modalopen\n         */\n        open() {\n            if (!this.opened_) {\n                const player = this.player();\n\n                /**\n                 * Fired just before a `ModalDialog` is opened.\n                 *\n                 * @event ModalDialog#beforemodalopen\n                 * @type {Event}\n                 */\n                this.trigger('beforemodalopen');\n                this.opened_ = true;\n\n                // Fill content if the modal has never opened before and\n                // never been filled.\n                if (this.options_.fillAlways || !this.hasBeenOpened_ && !this.hasBeenFilled_) {\n                    this.fill();\n                }\n\n                // If the player was playing, pause it and take note of its previously\n                // playing state.\n                this.wasPlaying_ = !player.paused();\n                if (this.options_.pauseOnOpen && this.wasPlaying_) {\n                    player.pause();\n                }\n                this.on('keydown', this.handleKeyDown_);\n\n                // Hide controls and note if they were enabled.\n                this.hadControls_ = player.controls();\n                player.controls(false);\n                this.show();\n                this.conditionalFocus_();\n                this.el().setAttribute('aria-hidden', 'false');\n\n                /**\n                 * Fired just after a `ModalDialog` is opened.\n                 *\n                 * @event ModalDialog#modalopen\n                 * @type {Event}\n                 */\n                this.trigger('modalopen');\n                this.hasBeenOpened_ = true;\n            }\n        }\n\n        /**\n         * If the `ModalDialog` is currently open or closed.\n         *\n         * @param  {boolean} [value]\n         *         If given, it will open (`true`) or close (`false`) the modal.\n         *\n         * @return {boolean}\n         *         the current open state of the modaldialog\n         */\n        opened(value) {\n            if (typeof value === 'boolean') {\n                this[value ? 'open' : 'close']();\n            }\n            return this.opened_;\n        }\n\n        /**\n         * Closes the modal, does nothing if the `ModalDialog` is\n         * not open.\n         *\n         * @fires ModalDialog#beforemodalclose\n         * @fires ModalDialog#modalclose\n         */\n        close() {\n            if (!this.opened_) {\n                return;\n            }\n            const player = this.player();\n\n            /**\n             * Fired just before a `ModalDialog` is closed.\n             *\n             * @event ModalDialog#beforemodalclose\n             * @type {Event}\n             */\n            this.trigger('beforemodalclose');\n            this.opened_ = false;\n            if (this.wasPlaying_ && this.options_.pauseOnOpen) {\n                player.play();\n            }\n            this.off('keydown', this.handleKeyDown_);\n            if (this.hadControls_) {\n                player.controls(true);\n            }\n            this.hide();\n            this.el().setAttribute('aria-hidden', 'true');\n\n            /**\n             * Fired just after a `ModalDialog` is closed.\n             *\n             * @event ModalDialog#modalclose\n             * @type {Event}\n             */\n            this.trigger('modalclose');\n            this.conditionalBlur_();\n            if (this.options_.temporary) {\n                this.dispose();\n            }\n        }\n\n        /**\n         * Check to see if the `ModalDialog` is closeable via the UI.\n         *\n         * @param  {boolean} [value]\n         *         If given as a boolean, it will set the `closeable` option.\n         *\n         * @return {boolean}\n         *         Returns the final value of the closable option.\n         */\n        closeable(value) {\n            if (typeof value === 'boolean') {\n                const closeable = this.closeable_ = !!value;\n                let close = this.getChild('closeButton');\n\n                // If this is being made closeable and has no close button, add one.\n                if (closeable && !close) {\n                    // The close button should be a child of the modal - not its\n                    // content element, so temporarily change the content element.\n                    const temp = this.contentEl_;\n                    this.contentEl_ = this.el_;\n                    close = this.addChild('closeButton', {\n                        controlText: 'Close Modal Dialog'\n                    });\n                    this.contentEl_ = temp;\n                    this.on(close, 'close', this.close_);\n                }\n\n                // If this is being made uncloseable and has a close button, remove it.\n                if (!closeable && close) {\n                    this.off(close, 'close', this.close_);\n                    this.removeChild(close);\n                    close.dispose();\n                }\n            }\n            return this.closeable_;\n        }\n\n        /**\n         * Fill the modal's content element with the modal's \"content\" option.\n         * The content element will be emptied before this change takes place.\n         */\n        fill() {\n            this.fillWith(this.content());\n        }\n\n        /**\n         * Fill the modal's content element with arbitrary content.\n         * The content element will be emptied before this change takes place.\n         *\n         * @fires ModalDialog#beforemodalfill\n         * @fires ModalDialog#modalfill\n         *\n         * @param { import('./utils/dom').ContentDescriptor} [content]\n         *        The same rules apply to this as apply to the `content` option.\n         */\n        fillWith(content) {\n            const contentEl = this.contentEl();\n            const parentEl = contentEl.parentNode;\n            const nextSiblingEl = contentEl.nextSibling;\n\n            /**\n             * Fired just before a `ModalDialog` is filled with content.\n             *\n             * @event ModalDialog#beforemodalfill\n             * @type {Event}\n             */\n            this.trigger('beforemodalfill');\n            this.hasBeenFilled_ = true;\n\n            // Detach the content element from the DOM before performing\n            // manipulation to avoid modifying the live DOM multiple times.\n            parentEl.removeChild(contentEl);\n            this.empty();\n            insertContent(contentEl, content);\n            /**\n             * Fired just after a `ModalDialog` is filled with content.\n             *\n             * @event ModalDialog#modalfill\n             * @type {Event}\n             */\n            this.trigger('modalfill');\n\n            // Re-inject the re-filled content element.\n            if (nextSiblingEl) {\n                parentEl.insertBefore(contentEl, nextSiblingEl);\n            } else {\n                parentEl.appendChild(contentEl);\n            }\n\n            // make sure that the close button is last in the dialog DOM\n            const closeButton = this.getChild('closeButton');\n            if (closeButton) {\n                parentEl.appendChild(closeButton.el_);\n            }\n        }\n\n        /**\n         * Empties the content element. This happens anytime the modal is filled.\n         *\n         * @fires ModalDialog#beforemodalempty\n         * @fires ModalDialog#modalempty\n         */\n        empty() {\n            /**\n             * Fired just before a `ModalDialog` is emptied.\n             *\n             * @event ModalDialog#beforemodalempty\n             * @type {Event}\n             */\n            this.trigger('beforemodalempty');\n            emptyEl(this.contentEl());\n\n            /**\n             * Fired just after a `ModalDialog` is emptied.\n             *\n             * @event ModalDialog#modalempty\n             * @type {Event}\n             */\n            this.trigger('modalempty');\n        }\n\n        /**\n         * Gets or sets the modal content, which gets normalized before being\n         * rendered into the DOM.\n         *\n         * This does not update the DOM or fill the modal, but it is called during\n         * that process.\n         *\n         * @param  { import('./utils/dom').ContentDescriptor} [value]\n         *         If defined, sets the internal content value to be used on the\n         *         next call(s) to `fill`. This value is normalized before being\n         *         inserted. To \"clear\" the internal content value, pass `null`.\n         *\n         * @return { import('./utils/dom').ContentDescriptor}\n         *         The current content of the modal dialog\n         */\n        content(value) {\n            if (typeof value !== 'undefined') {\n                this.content_ = value;\n            }\n            return this.content_;\n        }\n\n        /**\n         * conditionally focus the modal dialog if focus was previously on the player.\n         *\n         * @private\n         */\n        conditionalFocus_() {\n            const activeEl = document.activeElement;\n            const playerEl = this.player_.el_;\n            this.previouslyActiveEl_ = null;\n            if (playerEl.contains(activeEl) || playerEl === activeEl) {\n                this.previouslyActiveEl_ = activeEl;\n                this.focus();\n            }\n        }\n\n        /**\n         * conditionally blur the element and refocus the last focused element\n         *\n         * @private\n         */\n        conditionalBlur_() {\n            if (this.previouslyActiveEl_) {\n                this.previouslyActiveEl_.focus();\n                this.previouslyActiveEl_ = null;\n            }\n        }\n\n        /**\n         * Keydown handler. Attached when modal is focused.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            // Do not allow keydowns to reach out of the modal dialog.\n            event.stopPropagation();\n            if (keycode.isEventKey(event, 'Escape') && this.closeable()) {\n                event.preventDefault();\n                this.close();\n                return;\n            }\n\n            // exit early if it isn't a tab key\n            if (!keycode.isEventKey(event, 'Tab')) {\n                return;\n            }\n            const focusableEls = this.focusableEls_();\n            const activeEl = this.el_.querySelector(':focus');\n            let focusIndex;\n            for (let i = 0; i < focusableEls.length; i++) {\n                if (activeEl === focusableEls[i]) {\n                    focusIndex = i;\n                    break;\n                }\n            }\n            if (document.activeElement === this.el_) {\n                focusIndex = 0;\n            }\n            if (event.shiftKey && focusIndex === 0) {\n                focusableEls[focusableEls.length - 1].focus();\n                event.preventDefault();\n            } else if (!event.shiftKey && focusIndex === focusableEls.length - 1) {\n                focusableEls[0].focus();\n                event.preventDefault();\n            }\n        }\n\n        /**\n         * get all focusable elements\n         *\n         * @private\n         */\n        focusableEls_() {\n            const allChildren = this.el_.querySelectorAll('*');\n            return Array.prototype.filter.call(allChildren, child => {\n                return (child instanceof window.HTMLAnchorElement || child instanceof window.HTMLAreaElement) && child.hasAttribute('href') || (child instanceof window.HTMLInputElement || child instanceof window.HTMLSelectElement || child instanceof window.HTMLTextAreaElement || child instanceof window.HTMLButtonElement) && !child.hasAttribute('disabled') || child instanceof window.HTMLIFrameElement || child instanceof window.HTMLObjectElement || child instanceof window.HTMLEmbedElement || child.hasAttribute('tabindex') && child.getAttribute('tabindex') !== -1 || child.hasAttribute('contenteditable');\n            });\n        }\n    }\n\n    /**\n     * Default options for `ModalDialog` default options.\n     *\n     * @type {Object}\n     * @private\n     */\n    ModalDialog.prototype.options_ = {\n        pauseOnOpen: true,\n        temporary: true\n    };\n    Component$1.registerComponent('ModalDialog', ModalDialog);\n\n    /**\n     * @file track-list.js\n     */\n\n    /**\n     * Common functionaliy between {@link TextTrackList}, {@link AudioTrackList}, and\n     * {@link VideoTrackList}\n     *\n     * @extends EventTarget\n     */\n    class TrackList extends EventTarget$2 {\n        /**\n         * Create an instance of this class\n         *\n         * @param { import('./track').default[] } tracks\n         *        A list of tracks to initialize the list with.\n         *\n         * @abstract\n         */\n        constructor(tracks = []) {\n            super();\n            this.tracks_ = [];\n\n            /**\n             * @memberof TrackList\n             * @member {number} length\n             *         The current number of `Track`s in the this Trackist.\n             * @instance\n             */\n            Object.defineProperty(this, 'length', {\n                get() {\n                    return this.tracks_.length;\n                }\n            });\n            for (let i = 0; i < tracks.length; i++) {\n                this.addTrack(tracks[i]);\n            }\n        }\n\n        /**\n         * Add a {@link Track} to the `TrackList`\n         *\n         * @param { import('./track').default } track\n         *        The audio, video, or text track to add to the list.\n         *\n         * @fires TrackList#addtrack\n         */\n        addTrack(track) {\n            const index = this.tracks_.length;\n            if (!('' + index in this)) {\n                Object.defineProperty(this, index, {\n                    get() {\n                        return this.tracks_[index];\n                    }\n                });\n            }\n\n            // Do not add duplicate tracks\n            if (this.tracks_.indexOf(track) === -1) {\n                this.tracks_.push(track);\n                /**\n                 * Triggered when a track is added to a track list.\n                 *\n                 * @event TrackList#addtrack\n                 * @type {Event}\n                 * @property {Track} track\n                 *           A reference to track that was added.\n                 */\n                this.trigger({\n                    track,\n                    type: 'addtrack',\n                    target: this\n                });\n            }\n\n            /**\n             * Triggered when a track label is changed.\n             *\n             * @event TrackList#addtrack\n             * @type {Event}\n             * @property {Track} track\n             *           A reference to track that was added.\n             */\n            track.labelchange_ = () => {\n                this.trigger({\n                    track,\n                    type: 'labelchange',\n                    target: this\n                });\n            };\n            if (isEvented(track)) {\n                track.addEventListener('labelchange', track.labelchange_);\n            }\n        }\n\n        /**\n         * Remove a {@link Track} from the `TrackList`\n         *\n         * @param { import('./track').default } rtrack\n         *        The audio, video, or text track to remove from the list.\n         *\n         * @fires TrackList#removetrack\n         */\n        removeTrack(rtrack) {\n            let track;\n            for (let i = 0, l = this.length; i < l; i++) {\n                if (this[i] === rtrack) {\n                    track = this[i];\n                    if (track.off) {\n                        track.off();\n                    }\n                    this.tracks_.splice(i, 1);\n                    break;\n                }\n            }\n            if (!track) {\n                return;\n            }\n\n            /**\n             * Triggered when a track is removed from track list.\n             *\n             * @event TrackList#removetrack\n             * @type {Event}\n             * @property {Track} track\n             *           A reference to track that was removed.\n             */\n            this.trigger({\n                track,\n                type: 'removetrack',\n                target: this\n            });\n        }\n\n        /**\n         * Get a Track from the TrackList by a tracks id\n         *\n         * @param {string} id - the id of the track to get\n         * @method getTrackById\n         * @return { import('./track').default }\n         * @private\n         */\n        getTrackById(id) {\n            let result = null;\n            for (let i = 0, l = this.length; i < l; i++) {\n                const track = this[i];\n                if (track.id === id) {\n                    result = track;\n                    break;\n                }\n            }\n            return result;\n        }\n    }\n\n    /**\n     * Triggered when a different track is selected/enabled.\n     *\n     * @event TrackList#change\n     * @type {Event}\n     */\n\n    /**\n     * Events that can be called with on + eventName. See {@link EventHandler}.\n     *\n     * @property {Object} TrackList#allowedEvents_\n     * @private\n     */\n    TrackList.prototype.allowedEvents_ = {\n        change: 'change',\n        addtrack: 'addtrack',\n        removetrack: 'removetrack',\n        labelchange: 'labelchange'\n    };\n\n    // emulate attribute EventHandler support to allow for feature detection\n    for (const event in TrackList.prototype.allowedEvents_) {\n        TrackList.prototype['on' + event] = null;\n    }\n\n    /**\n     * @file audio-track-list.js\n     */\n\n    /**\n     * Anywhere we call this function we diverge from the spec\n     * as we only support one enabled audiotrack at a time\n     *\n     * @param {AudioTrackList} list\n     *        list to work on\n     *\n     * @param { import('./audio-track').default } track\n     *        The track to skip\n     *\n     * @private\n     */\n    const disableOthers$1 = function (list, track) {\n        for (let i = 0; i < list.length; i++) {\n            if (!Object.keys(list[i]).length || track.id === list[i].id) {\n                continue;\n            }\n            // another audio track is enabled, disable it\n            list[i].enabled = false;\n        }\n    };\n\n    /**\n     * The current list of {@link AudioTrack} for a media file.\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotracklist}\n     * @extends TrackList\n     */\n    class AudioTrackList extends TrackList {\n        /**\n         * Create an instance of this class.\n         *\n         * @param {AudioTrack[]} [tracks=[]]\n         *        A list of `AudioTrack` to instantiate the list with.\n         */\n        constructor(tracks = []) {\n            // make sure only 1 track is enabled\n            // sorted from last index to first index\n            for (let i = tracks.length - 1; i >= 0; i--) {\n                if (tracks[i].enabled) {\n                    disableOthers$1(tracks, tracks[i]);\n                    break;\n                }\n            }\n            super(tracks);\n            this.changing_ = false;\n        }\n\n        /**\n         * Add an {@link AudioTrack} to the `AudioTrackList`.\n         *\n         * @param { import('./audio-track').default } track\n         *        The AudioTrack to add to the list\n         *\n         * @fires TrackList#addtrack\n         */\n        addTrack(track) {\n            if (track.enabled) {\n                disableOthers$1(this, track);\n            }\n            super.addTrack(track);\n            // native tracks don't have this\n            if (!track.addEventListener) {\n                return;\n            }\n            track.enabledChange_ = () => {\n                // when we are disabling other tracks (since we don't support\n                // more than one track at a time) we will set changing_\n                // to true so that we don't trigger additional change events\n                if (this.changing_) {\n                    return;\n                }\n                this.changing_ = true;\n                disableOthers$1(this, track);\n                this.changing_ = false;\n                this.trigger('change');\n            };\n\n            /**\n             * @listens AudioTrack#enabledchange\n             * @fires TrackList#change\n             */\n            track.addEventListener('enabledchange', track.enabledChange_);\n        }\n        removeTrack(rtrack) {\n            super.removeTrack(rtrack);\n            if (rtrack.removeEventListener && rtrack.enabledChange_) {\n                rtrack.removeEventListener('enabledchange', rtrack.enabledChange_);\n                rtrack.enabledChange_ = null;\n            }\n        }\n    }\n\n    /**\n     * @file video-track-list.js\n     */\n\n    /**\n     * Un-select all other {@link VideoTrack}s that are selected.\n     *\n     * @param {VideoTrackList} list\n     *        list to work on\n     *\n     * @param { import('./video-track').default } track\n     *        The track to skip\n     *\n     * @private\n     */\n    const disableOthers = function (list, track) {\n        for (let i = 0; i < list.length; i++) {\n            if (!Object.keys(list[i]).length || track.id === list[i].id) {\n                continue;\n            }\n            // another video track is enabled, disable it\n            list[i].selected = false;\n        }\n    };\n\n    /**\n     * The current list of {@link VideoTrack} for a video.\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotracklist}\n     * @extends TrackList\n     */\n    class VideoTrackList extends TrackList {\n        /**\n         * Create an instance of this class.\n         *\n         * @param {VideoTrack[]} [tracks=[]]\n         *        A list of `VideoTrack` to instantiate the list with.\n         */\n        constructor(tracks = []) {\n            // make sure only 1 track is enabled\n            // sorted from last index to first index\n            for (let i = tracks.length - 1; i >= 0; i--) {\n                if (tracks[i].selected) {\n                    disableOthers(tracks, tracks[i]);\n                    break;\n                }\n            }\n            super(tracks);\n            this.changing_ = false;\n\n            /**\n             * @member {number} VideoTrackList#selectedIndex\n             *         The current index of the selected {@link VideoTrack`}.\n             */\n            Object.defineProperty(this, 'selectedIndex', {\n                get() {\n                    for (let i = 0; i < this.length; i++) {\n                        if (this[i].selected) {\n                            return i;\n                        }\n                    }\n                    return -1;\n                },\n                set() {}\n            });\n        }\n\n        /**\n         * Add a {@link VideoTrack} to the `VideoTrackList`.\n         *\n         * @param { import('./video-track').default } track\n         *        The VideoTrack to add to the list\n         *\n         * @fires TrackList#addtrack\n         */\n        addTrack(track) {\n            if (track.selected) {\n                disableOthers(this, track);\n            }\n            super.addTrack(track);\n            // native tracks don't have this\n            if (!track.addEventListener) {\n                return;\n            }\n            track.selectedChange_ = () => {\n                if (this.changing_) {\n                    return;\n                }\n                this.changing_ = true;\n                disableOthers(this, track);\n                this.changing_ = false;\n                this.trigger('change');\n            };\n\n            /**\n             * @listens VideoTrack#selectedchange\n             * @fires TrackList#change\n             */\n            track.addEventListener('selectedchange', track.selectedChange_);\n        }\n        removeTrack(rtrack) {\n            super.removeTrack(rtrack);\n            if (rtrack.removeEventListener && rtrack.selectedChange_) {\n                rtrack.removeEventListener('selectedchange', rtrack.selectedChange_);\n                rtrack.selectedChange_ = null;\n            }\n        }\n    }\n\n    /**\n     * @file text-track-list.js\n     */\n\n    /**\n     * The current list of {@link TextTrack} for a media file.\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttracklist}\n     * @extends TrackList\n     */\n    class TextTrackList extends TrackList {\n        /**\n         * Add a {@link TextTrack} to the `TextTrackList`\n         *\n         * @param { import('./text-track').default } track\n         *        The text track to add to the list.\n         *\n         * @fires TrackList#addtrack\n         */\n        addTrack(track) {\n            super.addTrack(track);\n            if (!this.queueChange_) {\n                this.queueChange_ = () => this.queueTrigger('change');\n            }\n            if (!this.triggerSelectedlanguagechange) {\n                this.triggerSelectedlanguagechange_ = () => this.trigger('selectedlanguagechange');\n            }\n\n            /**\n             * @listens TextTrack#modechange\n             * @fires TrackList#change\n             */\n            track.addEventListener('modechange', this.queueChange_);\n            const nonLanguageTextTrackKind = ['metadata', 'chapters'];\n            if (nonLanguageTextTrackKind.indexOf(track.kind) === -1) {\n                track.addEventListener('modechange', this.triggerSelectedlanguagechange_);\n            }\n        }\n        removeTrack(rtrack) {\n            super.removeTrack(rtrack);\n\n            // manually remove the event handlers we added\n            if (rtrack.removeEventListener) {\n                if (this.queueChange_) {\n                    rtrack.removeEventListener('modechange', this.queueChange_);\n                }\n                if (this.selectedlanguagechange_) {\n                    rtrack.removeEventListener('modechange', this.triggerSelectedlanguagechange_);\n                }\n            }\n        }\n    }\n\n    /**\n     * @file html-track-element-list.js\n     */\n\n    /**\n     * The current list of {@link HtmlTrackElement}s.\n     */\n    class HtmlTrackElementList {\n        /**\n         * Create an instance of this class.\n         *\n         * @param {HtmlTrackElement[]} [tracks=[]]\n         *        A list of `HtmlTrackElement` to instantiate the list with.\n         */\n        constructor(trackElements = []) {\n            this.trackElements_ = [];\n\n            /**\n             * @memberof HtmlTrackElementList\n             * @member {number} length\n             *         The current number of `Track`s in the this Trackist.\n             * @instance\n             */\n            Object.defineProperty(this, 'length', {\n                get() {\n                    return this.trackElements_.length;\n                }\n            });\n            for (let i = 0, length = trackElements.length; i < length; i++) {\n                this.addTrackElement_(trackElements[i]);\n            }\n        }\n\n        /**\n         * Add an {@link HtmlTrackElement} to the `HtmlTrackElementList`\n         *\n         * @param {HtmlTrackElement} trackElement\n         *        The track element to add to the list.\n         *\n         * @private\n         */\n        addTrackElement_(trackElement) {\n            const index = this.trackElements_.length;\n            if (!('' + index in this)) {\n                Object.defineProperty(this, index, {\n                    get() {\n                        return this.trackElements_[index];\n                    }\n                });\n            }\n\n            // Do not add duplicate elements\n            if (this.trackElements_.indexOf(trackElement) === -1) {\n                this.trackElements_.push(trackElement);\n            }\n        }\n\n        /**\n         * Get an {@link HtmlTrackElement} from the `HtmlTrackElementList` given an\n         * {@link TextTrack}.\n         *\n         * @param {TextTrack} track\n         *        The track associated with a track element.\n         *\n         * @return {HtmlTrackElement|undefined}\n         *         The track element that was found or undefined.\n         *\n         * @private\n         */\n        getTrackElementByTrack_(track) {\n            let trackElement_;\n            for (let i = 0, length = this.trackElements_.length; i < length; i++) {\n                if (track === this.trackElements_[i].track) {\n                    trackElement_ = this.trackElements_[i];\n                    break;\n                }\n            }\n            return trackElement_;\n        }\n\n        /**\n         * Remove a {@link HtmlTrackElement} from the `HtmlTrackElementList`\n         *\n         * @param {HtmlTrackElement} trackElement\n         *        The track element to remove from the list.\n         *\n         * @private\n         */\n        removeTrackElement_(trackElement) {\n            for (let i = 0, length = this.trackElements_.length; i < length; i++) {\n                if (trackElement === this.trackElements_[i]) {\n                    if (this.trackElements_[i].track && typeof this.trackElements_[i].track.off === 'function') {\n                        this.trackElements_[i].track.off();\n                    }\n                    if (typeof this.trackElements_[i].off === 'function') {\n                        this.trackElements_[i].off();\n                    }\n                    this.trackElements_.splice(i, 1);\n                    break;\n                }\n            }\n        }\n    }\n\n    /**\n     * @file text-track-cue-list.js\n     */\n\n    /**\n     * @typedef {Object} TextTrackCueList~TextTrackCue\n     *\n     * @property {string} id\n     *           The unique id for this text track cue\n     *\n     * @property {number} startTime\n     *           The start time for this text track cue\n     *\n     * @property {number} endTime\n     *           The end time for this text track cue\n     *\n     * @property {boolean} pauseOnExit\n     *           Pause when the end time is reached if true.\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcue}\n     */\n\n    /**\n     * A List of TextTrackCues.\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcuelist}\n     */\n    class TextTrackCueList {\n        /**\n         * Create an instance of this class..\n         *\n         * @param {Array} cues\n         *        A list of cues to be initialized with\n         */\n        constructor(cues) {\n            TextTrackCueList.prototype.setCues_.call(this, cues);\n\n            /**\n             * @memberof TextTrackCueList\n             * @member {number} length\n             *         The current number of `TextTrackCue`s in the TextTrackCueList.\n             * @instance\n             */\n            Object.defineProperty(this, 'length', {\n                get() {\n                    return this.length_;\n                }\n            });\n        }\n\n        /**\n         * A setter for cues in this list. Creates getters\n         * an an index for the cues.\n         *\n         * @param {Array} cues\n         *        An array of cues to set\n         *\n         * @private\n         */\n        setCues_(cues) {\n            const oldLength = this.length || 0;\n            let i = 0;\n            const l = cues.length;\n            this.cues_ = cues;\n            this.length_ = cues.length;\n            const defineProp = function (index) {\n                if (!('' + index in this)) {\n                    Object.defineProperty(this, '' + index, {\n                        get() {\n                            return this.cues_[index];\n                        }\n                    });\n                }\n            };\n            if (oldLength < l) {\n                i = oldLength;\n                for (; i < l; i++) {\n                    defineProp.call(this, i);\n                }\n            }\n        }\n\n        /**\n         * Get a `TextTrackCue` that is currently in the `TextTrackCueList` by id.\n         *\n         * @param {string} id\n         *        The id of the cue that should be searched for.\n         *\n         * @return {TextTrackCueList~TextTrackCue|null}\n         *         A single cue or null if none was found.\n         */\n        getCueById(id) {\n            let result = null;\n            for (let i = 0, l = this.length; i < l; i++) {\n                const cue = this[i];\n                if (cue.id === id) {\n                    result = cue;\n                    break;\n                }\n            }\n            return result;\n        }\n    }\n\n    /**\n     * @file track-kinds.js\n     */\n\n    /**\n     * All possible `VideoTrackKind`s\n     *\n     * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-videotrack-kind\n     * @typedef VideoTrack~Kind\n     * @enum\n     */\n    const VideoTrackKind = {\n        alternative: 'alternative',\n        captions: 'captions',\n        main: 'main',\n        sign: 'sign',\n        subtitles: 'subtitles',\n        commentary: 'commentary'\n    };\n\n    /**\n     * All possible `AudioTrackKind`s\n     *\n     * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-audiotrack-kind\n     * @typedef AudioTrack~Kind\n     * @enum\n     */\n    const AudioTrackKind = {\n        'alternative': 'alternative',\n        'descriptions': 'descriptions',\n        'main': 'main',\n        'main-desc': 'main-desc',\n        'translation': 'translation',\n        'commentary': 'commentary'\n    };\n\n    /**\n     * All possible `TextTrackKind`s\n     *\n     * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-texttrack-kind\n     * @typedef TextTrack~Kind\n     * @enum\n     */\n    const TextTrackKind = {\n        subtitles: 'subtitles',\n        captions: 'captions',\n        descriptions: 'descriptions',\n        chapters: 'chapters',\n        metadata: 'metadata'\n    };\n\n    /**\n     * All possible `TextTrackMode`s\n     *\n     * @see https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackmode\n     * @typedef TextTrack~Mode\n     * @enum\n     */\n    const TextTrackMode = {\n        disabled: 'disabled',\n        hidden: 'hidden',\n        showing: 'showing'\n    };\n\n    /**\n     * @file track.js\n     */\n\n    /**\n     * A Track class that contains all of the common functionality for {@link AudioTrack},\n     * {@link VideoTrack}, and {@link TextTrack}.\n     *\n     * > Note: This class should not be used directly\n     *\n     * @see {@link https://html.spec.whatwg.org/multipage/embedded-content.html}\n     * @extends EventTarget\n     * @abstract\n     */\n    class Track extends EventTarget$2 {\n        /**\n         * Create an instance of this class.\n         *\n         * @param {Object} [options={}]\n         *        Object of option names and values\n         *\n         * @param {string} [options.kind='']\n         *        A valid kind for the track type you are creating.\n         *\n         * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n         *        A unique id for this AudioTrack.\n         *\n         * @param {string} [options.label='']\n         *        The menu label for this track.\n         *\n         * @param {string} [options.language='']\n         *        A valid two character language code.\n         *\n         * @abstract\n         */\n        constructor(options = {}) {\n            super();\n            const trackProps = {\n                id: options.id || 'vjs_track_' + newGUID(),\n                kind: options.kind || '',\n                language: options.language || ''\n            };\n            let label = options.label || '';\n\n            /**\n             * @memberof Track\n             * @member {string} id\n             *         The id of this track. Cannot be changed after creation.\n             * @instance\n             *\n             * @readonly\n             */\n\n            /**\n             * @memberof Track\n             * @member {string} kind\n             *         The kind of track that this is. Cannot be changed after creation.\n             * @instance\n             *\n             * @readonly\n             */\n\n            /**\n             * @memberof Track\n             * @member {string} language\n             *         The two letter language code for this track. Cannot be changed after\n             *         creation.\n             * @instance\n             *\n             * @readonly\n             */\n\n            for (const key in trackProps) {\n                Object.defineProperty(this, key, {\n                    get() {\n                        return trackProps[key];\n                    },\n                    set() {}\n                });\n            }\n\n            /**\n             * @memberof Track\n             * @member {string} label\n             *         The label of this track. Cannot be changed after creation.\n             * @instance\n             *\n             * @fires Track#labelchange\n             */\n            Object.defineProperty(this, 'label', {\n                get() {\n                    return label;\n                },\n                set(newLabel) {\n                    if (newLabel !== label) {\n                        label = newLabel;\n\n                        /**\n                         * An event that fires when label changes on this track.\n                         *\n                         * > Note: This is not part of the spec!\n                         *\n                         * @event Track#labelchange\n                         * @type {Event}\n                         */\n                        this.trigger('labelchange');\n                    }\n                }\n            });\n        }\n    }\n\n    /**\n     * @file url.js\n     * @module url\n     */\n\n    /**\n     * @typedef {Object} url:URLObject\n     *\n     * @property {string} protocol\n     *           The protocol of the url that was parsed.\n     *\n     * @property {string} hostname\n     *           The hostname of the url that was parsed.\n     *\n     * @property {string} port\n     *           The port of the url that was parsed.\n     *\n     * @property {string} pathname\n     *           The pathname of the url that was parsed.\n     *\n     * @property {string} search\n     *           The search query of the url that was parsed.\n     *\n     * @property {string} hash\n     *           The hash of the url that was parsed.\n     *\n     * @property {string} host\n     *           The host of the url that was parsed.\n     */\n\n    /**\n     * Resolve and parse the elements of a URL.\n     *\n     * @function\n     * @param    {String} url\n     *           The url to parse\n     *\n     * @return   {url:URLObject}\n     *           An object of url details\n     */\n    const parseUrl = function (url) {\n        // This entire method can be replace with URL once we are able to drop IE11\n\n        const props = ['protocol', 'hostname', 'port', 'pathname', 'search', 'hash', 'host'];\n\n        // add the url to an anchor and let the browser parse the URL\n        const a = document.createElement('a');\n        a.href = url;\n\n        // Copy the specific URL properties to a new object\n        // This is also needed for IE because the anchor loses its\n        // properties when it's removed from the dom\n        const details = {};\n        for (let i = 0; i < props.length; i++) {\n            details[props[i]] = a[props[i]];\n        }\n\n        // IE adds the port to the host property unlike everyone else. If\n        // a port identifier is added for standard ports, strip it.\n        if (details.protocol === 'http:') {\n            details.host = details.host.replace(/:80$/, '');\n        }\n        if (details.protocol === 'https:') {\n            details.host = details.host.replace(/:443$/, '');\n        }\n        if (!details.protocol) {\n            details.protocol = window.location.protocol;\n        }\n\n        /* istanbul ignore if */\n        if (!details.host) {\n            details.host = window.location.host;\n        }\n        return details;\n    };\n\n    /**\n     * Get absolute version of relative URL.\n     *\n     * @function\n     * @param    {string} url\n     *           URL to make absolute\n     *\n     * @return   {string}\n     *           Absolute URL\n     *\n     * @see      http://stackoverflow.com/questions/470832/getting-an-absolute-url-from-a-relative-one-ie6-issue\n     */\n    const getAbsoluteURL = function (url) {\n        // Check if absolute URL\n        if (!url.match(/^https?:\\/\\//)) {\n            // Add the url to an anchor and let the browser parse it to convert to an absolute url\n            const a = document.createElement('a');\n            a.href = url;\n            url = a.href;\n        }\n        return url;\n    };\n\n    /**\n     * Returns the extension of the passed file name. It will return an empty string\n     * if passed an invalid path.\n     *\n     * @function\n     * @param    {string} path\n     *           The fileName path like '/path/to/file.mp4'\n     *\n     * @return  {string}\n     *           The extension in lower case or an empty string if no\n     *           extension could be found.\n     */\n    const getFileExtension = function (path) {\n        if (typeof path === 'string') {\n            const splitPathRe = /^(\\/?)([\\s\\S]*?)((?:\\.{1,2}|[^\\/]+?)(\\.([^\\.\\/\\?]+)))(?:[\\/]*|[\\?].*)$/;\n            const pathParts = splitPathRe.exec(path);\n            if (pathParts) {\n                return pathParts.pop().toLowerCase();\n            }\n        }\n        return '';\n    };\n\n    /**\n     * Returns whether the url passed is a cross domain request or not.\n     *\n     * @function\n     * @param    {string} url\n     *           The url to check.\n     *\n     * @param    {Object} [winLoc]\n     *           the domain to check the url against, defaults to window.location\n     *\n     * @param    {string} [winLoc.protocol]\n     *           The window location protocol defaults to window.location.protocol\n     *\n     * @param    {string} [winLoc.host]\n     *           The window location host defaults to window.location.host\n     *\n     * @return   {boolean}\n     *           Whether it is a cross domain request or not.\n     */\n    const isCrossOrigin = function (url, winLoc = window.location) {\n        const urlInfo = parseUrl(url);\n\n        // IE8 protocol relative urls will return ':' for protocol\n        const srcProtocol = urlInfo.protocol === ':' ? winLoc.protocol : urlInfo.protocol;\n\n        // Check if url is for another domain/origin\n        // IE8 doesn't know location.origin, so we won't rely on it here\n        const crossOrigin = srcProtocol + urlInfo.host !== winLoc.protocol + winLoc.host;\n        return crossOrigin;\n    };\n\n    var Url = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        parseUrl: parseUrl,\n        getAbsoluteURL: getAbsoluteURL,\n        getFileExtension: getFileExtension,\n        isCrossOrigin: isCrossOrigin\n    });\n\n    var win;\n    if (typeof window !== \"undefined\") {\n        win = window;\n    } else if (typeof commonjsGlobal !== \"undefined\") {\n        win = commonjsGlobal;\n    } else if (typeof self !== \"undefined\") {\n        win = self;\n    } else {\n        win = {};\n    }\n    var window_1 = win;\n\n    var _extends_1 = createCommonjsModule(function (module) {\n        function _extends() {\n            module.exports = _extends = Object.assign ? Object.assign.bind() : function (target) {\n                for (var i = 1; i < arguments.length; i++) {\n                    var source = arguments[i];\n                    for (var key in source) {\n                        if (Object.prototype.hasOwnProperty.call(source, key)) {\n                            target[key] = source[key];\n                        }\n                    }\n                }\n                return target;\n            }, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;\n            return _extends.apply(this, arguments);\n        }\n        module.exports = _extends, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;\n    });\n    var _extends$1 = unwrapExports(_extends_1);\n\n    var isFunction_1 = isFunction;\n    var toString = Object.prototype.toString;\n    function isFunction(fn) {\n        if (!fn) {\n            return false;\n        }\n        var string = toString.call(fn);\n        return string === '[object Function]' || typeof fn === 'function' && string !== '[object RegExp]' || typeof window !== 'undefined' && (\n            // IE8 and below\n            fn === window.setTimeout || fn === window.alert || fn === window.confirm || fn === window.prompt);\n    }\n\n    var httpResponseHandler = function httpResponseHandler(callback, decodeResponseBody) {\n        if (decodeResponseBody === void 0) {\n            decodeResponseBody = false;\n        }\n        return function (err, response, responseBody) {\n            // if the XHR failed, return that error\n            if (err) {\n                callback(err);\n                return;\n            } // if the HTTP status code is 4xx or 5xx, the request also failed\n\n            if (response.statusCode >= 400 && response.statusCode <= 599) {\n                var cause = responseBody;\n                if (decodeResponseBody) {\n                    if (window_1.TextDecoder) {\n                        var charset = getCharset(response.headers && response.headers['content-type']);\n                        try {\n                            cause = new TextDecoder(charset).decode(responseBody);\n                        } catch (e) {}\n                    } else {\n                        cause = String.fromCharCode.apply(null, new Uint8Array(responseBody));\n                    }\n                }\n                callback({\n                    cause: cause\n                });\n                return;\n            } // otherwise, request succeeded\n\n            callback(null, responseBody);\n        };\n    };\n    function getCharset(contentTypeHeader) {\n        if (contentTypeHeader === void 0) {\n            contentTypeHeader = '';\n        }\n        return contentTypeHeader.toLowerCase().split(';').reduce(function (charset, contentType) {\n            var _contentType$split = contentType.split('='),\n                type = _contentType$split[0],\n                value = _contentType$split[1];\n            if (type.trim() === 'charset') {\n                return value.trim();\n            }\n            return charset;\n        }, 'utf-8');\n    }\n    var httpHandler = httpResponseHandler;\n\n    createXHR.httpHandler = httpHandler;\n    /**\n     * @license\n     * slighly modified parse-headers 2.0.2 <https://github.com/kesla/parse-headers/>\n     * Copyright (c) 2014 David Björklund\n     * Available under the MIT license\n     * <https://github.com/kesla/parse-headers/blob/master/LICENCE>\n     */\n\n    var parseHeaders = function parseHeaders(headers) {\n        var result = {};\n        if (!headers) {\n            return result;\n        }\n        headers.trim().split('\\n').forEach(function (row) {\n            var index = row.indexOf(':');\n            var key = row.slice(0, index).trim().toLowerCase();\n            var value = row.slice(index + 1).trim();\n            if (typeof result[key] === 'undefined') {\n                result[key] = value;\n            } else if (Array.isArray(result[key])) {\n                result[key].push(value);\n            } else {\n                result[key] = [result[key], value];\n            }\n        });\n        return result;\n    };\n    var lib = createXHR; // Allow use of default import syntax in TypeScript\n\n    var default_1 = createXHR;\n    createXHR.XMLHttpRequest = window_1.XMLHttpRequest || noop$1;\n    createXHR.XDomainRequest = \"withCredentials\" in new createXHR.XMLHttpRequest() ? createXHR.XMLHttpRequest : window_1.XDomainRequest;\n    forEachArray([\"get\", \"put\", \"post\", \"patch\", \"head\", \"delete\"], function (method) {\n        createXHR[method === \"delete\" ? \"del\" : method] = function (uri, options, callback) {\n            options = initParams(uri, options, callback);\n            options.method = method.toUpperCase();\n            return _createXHR(options);\n        };\n    });\n    function forEachArray(array, iterator) {\n        for (var i = 0; i < array.length; i++) {\n            iterator(array[i]);\n        }\n    }\n    function isEmpty(obj) {\n        for (var i in obj) {\n            if (obj.hasOwnProperty(i)) return false;\n        }\n        return true;\n    }\n    function initParams(uri, options, callback) {\n        var params = uri;\n        if (isFunction_1(options)) {\n            callback = options;\n            if (typeof uri === \"string\") {\n                params = {\n                    uri: uri\n                };\n            }\n        } else {\n            params = _extends_1({}, options, {\n                uri: uri\n            });\n        }\n        params.callback = callback;\n        return params;\n    }\n    function createXHR(uri, options, callback) {\n        options = initParams(uri, options, callback);\n        return _createXHR(options);\n    }\n    function _createXHR(options) {\n        if (typeof options.callback === \"undefined\") {\n            throw new Error(\"callback argument missing\");\n        }\n        var called = false;\n        var callback = function cbOnce(err, response, body) {\n            if (!called) {\n                called = true;\n                options.callback(err, response, body);\n            }\n        };\n        function readystatechange() {\n            if (xhr.readyState === 4) {\n                setTimeout(loadFunc, 0);\n            }\n        }\n        function getBody() {\n            // Chrome with requestType=blob throws errors arround when even testing access to responseText\n            var body = undefined;\n            if (xhr.response) {\n                body = xhr.response;\n            } else {\n                body = xhr.responseText || getXml(xhr);\n            }\n            if (isJson) {\n                try {\n                    body = JSON.parse(body);\n                } catch (e) {}\n            }\n            return body;\n        }\n        function errorFunc(evt) {\n            clearTimeout(timeoutTimer);\n            if (!(evt instanceof Error)) {\n                evt = new Error(\"\" + (evt || \"Unknown XMLHttpRequest Error\"));\n            }\n            evt.statusCode = 0;\n            return callback(evt, failureResponse);\n        } // will load the data & process the response in a special response object\n\n        function loadFunc() {\n            if (aborted) return;\n            var status;\n            clearTimeout(timeoutTimer);\n            if (options.useXDR && xhr.status === undefined) {\n                //IE8 CORS GET successful response doesn't have a status field, but body is fine\n                status = 200;\n            } else {\n                status = xhr.status === 1223 ? 204 : xhr.status;\n            }\n            var response = failureResponse;\n            var err = null;\n            if (status !== 0) {\n                response = {\n                    body: getBody(),\n                    statusCode: status,\n                    method: method,\n                    headers: {},\n                    url: uri,\n                    rawRequest: xhr\n                };\n                if (xhr.getAllResponseHeaders) {\n                    //remember xhr can in fact be XDR for CORS in IE\n                    response.headers = parseHeaders(xhr.getAllResponseHeaders());\n                }\n            } else {\n                err = new Error(\"Internal XMLHttpRequest Error\");\n            }\n            return callback(err, response, response.body);\n        }\n        var xhr = options.xhr || null;\n        if (!xhr) {\n            if (options.cors || options.useXDR) {\n                xhr = new createXHR.XDomainRequest();\n            } else {\n                xhr = new createXHR.XMLHttpRequest();\n            }\n        }\n        var key;\n        var aborted;\n        var uri = xhr.url = options.uri || options.url;\n        var method = xhr.method = options.method || \"GET\";\n        var body = options.body || options.data;\n        var headers = xhr.headers = options.headers || {};\n        var sync = !!options.sync;\n        var isJson = false;\n        var timeoutTimer;\n        var failureResponse = {\n            body: undefined,\n            headers: {},\n            statusCode: 0,\n            method: method,\n            url: uri,\n            rawRequest: xhr\n        };\n        if (\"json\" in options && options.json !== false) {\n            isJson = true;\n            headers[\"accept\"] || headers[\"Accept\"] || (headers[\"Accept\"] = \"application/json\"); //Don't override existing accept header declared by user\n\n            if (method !== \"GET\" && method !== \"HEAD\") {\n                headers[\"content-type\"] || headers[\"Content-Type\"] || (headers[\"Content-Type\"] = \"application/json\"); //Don't override existing accept header declared by user\n\n                body = JSON.stringify(options.json === true ? body : options.json);\n            }\n        }\n        xhr.onreadystatechange = readystatechange;\n        xhr.onload = loadFunc;\n        xhr.onerror = errorFunc; // IE9 must have onprogress be set to a unique function.\n\n        xhr.onprogress = function () {// IE must die\n        };\n        xhr.onabort = function () {\n            aborted = true;\n        };\n        xhr.ontimeout = errorFunc;\n        xhr.open(method, uri, !sync, options.username, options.password); //has to be after open\n\n        if (!sync) {\n            xhr.withCredentials = !!options.withCredentials;\n        } // Cannot set timeout with sync request\n        // not setting timeout on the xhr object, because of old webkits etc. not handling that correctly\n        // both npm's request and jquery 1.x use this kind of timeout, so this is being consistent\n\n        if (!sync && options.timeout > 0) {\n            timeoutTimer = setTimeout(function () {\n                if (aborted) return;\n                aborted = true; //IE9 may still call readystatechange\n\n                xhr.abort(\"timeout\");\n                var e = new Error(\"XMLHttpRequest timeout\");\n                e.code = \"ETIMEDOUT\";\n                errorFunc(e);\n            }, options.timeout);\n        }\n        if (xhr.setRequestHeader) {\n            for (key in headers) {\n                if (headers.hasOwnProperty(key)) {\n                    xhr.setRequestHeader(key, headers[key]);\n                }\n            }\n        } else if (options.headers && !isEmpty(options.headers)) {\n            throw new Error(\"Headers cannot be set on an XDomainRequest object\");\n        }\n        if (\"responseType\" in options) {\n            xhr.responseType = options.responseType;\n        }\n        if (\"beforeSend\" in options && typeof options.beforeSend === \"function\") {\n            options.beforeSend(xhr);\n        } // Microsoft Edge browser sends \"undefined\" when send is called with undefined value.\n        // XMLHttpRequest spec says to pass null as body to indicate no body\n        // See https://github.com/naugtur/xhr/issues/100.\n\n        xhr.send(body || null);\n        return xhr;\n    }\n    function getXml(xhr) {\n        // xhr.responseXML will throw Exception \"InvalidStateError\" or \"DOMException\"\n        // See https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/responseXML.\n        try {\n            if (xhr.responseType === \"document\") {\n                return xhr.responseXML;\n            }\n            var firefoxBugTakenEffect = xhr.responseXML && xhr.responseXML.documentElement.nodeName === \"parsererror\";\n            if (xhr.responseType === \"\" && !firefoxBugTakenEffect) {\n                return xhr.responseXML;\n            }\n        } catch (e) {}\n        return null;\n    }\n    function noop$1() {}\n    lib.default = default_1;\n\n    /**\n     * @file text-track.js\n     */\n\n    /**\n     * Takes a webvtt file contents and parses it into cues\n     *\n     * @param {string} srcContent\n     *        webVTT file contents\n     *\n     * @param {TextTrack} track\n     *        TextTrack to add cues to. Cues come from the srcContent.\n     *\n     * @private\n     */\n    const parseCues = function (srcContent, track) {\n        const parser = new window.WebVTT.Parser(window, window.vttjs, window.WebVTT.StringDecoder());\n        const errors = [];\n        parser.oncue = function (cue) {\n            track.addCue(cue);\n        };\n        parser.onparsingerror = function (error) {\n            errors.push(error);\n        };\n        parser.onflush = function () {\n            track.trigger({\n                type: 'loadeddata',\n                target: track\n            });\n        };\n        parser.parse(srcContent);\n        if (errors.length > 0) {\n            if (window.console && window.console.groupCollapsed) {\n                window.console.groupCollapsed(`Text Track parsing errors for ${track.src}`);\n            }\n            errors.forEach(error => log$1.error(error));\n            if (window.console && window.console.groupEnd) {\n                window.console.groupEnd();\n            }\n        }\n        parser.flush();\n    };\n\n    /**\n     * Load a `TextTrack` from a specified url.\n     *\n     * @param {string} src\n     *        Url to load track from.\n     *\n     * @param {TextTrack} track\n     *        Track to add cues to. Comes from the content at the end of `url`.\n     *\n     * @private\n     */\n    const loadTrack = function (src, track) {\n        const opts = {\n            uri: src\n        };\n        const crossOrigin = isCrossOrigin(src);\n        if (crossOrigin) {\n            opts.cors = crossOrigin;\n        }\n        const withCredentials = track.tech_.crossOrigin() === 'use-credentials';\n        if (withCredentials) {\n            opts.withCredentials = withCredentials;\n        }\n        lib(opts, bind_(this, function (err, response, responseBody) {\n            if (err) {\n                return log$1.error(err, response);\n            }\n            track.loaded_ = true;\n\n            // Make sure that vttjs has loaded, otherwise, wait till it finished loading\n            // NOTE: this is only used for the alt/video.novtt.js build\n            if (typeof window.WebVTT !== 'function') {\n                if (track.tech_) {\n                    // to prevent use before define eslint error, we define loadHandler\n                    // as a let here\n                    track.tech_.any(['vttjsloaded', 'vttjserror'], event => {\n                        if (event.type === 'vttjserror') {\n                            log$1.error(`vttjs failed to load, stopping trying to process ${track.src}`);\n                            return;\n                        }\n                        return parseCues(responseBody, track);\n                    });\n                }\n            } else {\n                parseCues(responseBody, track);\n            }\n        }));\n    };\n\n    /**\n     * A representation of a single `TextTrack`.\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrack}\n     * @extends Track\n     */\n    class TextTrack extends Track {\n        /**\n         * Create an instance of this class.\n         *\n         * @param {Object} options={}\n         *        Object of option names and values\n         *\n         * @param { import('../tech/tech').default } options.tech\n         *        A reference to the tech that owns this TextTrack.\n         *\n         * @param {TextTrack~Kind} [options.kind='subtitles']\n         *        A valid text track kind.\n         *\n         * @param {TextTrack~Mode} [options.mode='disabled']\n         *        A valid text track mode.\n         *\n         * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n         *        A unique id for this TextTrack.\n         *\n         * @param {string} [options.label='']\n         *        The menu label for this track.\n         *\n         * @param {string} [options.language='']\n         *        A valid two character language code.\n         *\n         * @param {string} [options.srclang='']\n         *        A valid two character language code. An alternative, but deprioritized\n         *        version of `options.language`\n         *\n         * @param {string} [options.src]\n         *        A url to TextTrack cues.\n         *\n         * @param {boolean} [options.default]\n         *        If this track should default to on or off.\n         */\n        constructor(options = {}) {\n            if (!options.tech) {\n                throw new Error('A tech was not provided.');\n            }\n            const settings = merge$2(options, {\n                kind: TextTrackKind[options.kind] || 'subtitles',\n                language: options.language || options.srclang || ''\n            });\n            let mode = TextTrackMode[settings.mode] || 'disabled';\n            const default_ = settings.default;\n            if (settings.kind === 'metadata' || settings.kind === 'chapters') {\n                mode = 'hidden';\n            }\n            super(settings);\n            this.tech_ = settings.tech;\n            this.cues_ = [];\n            this.activeCues_ = [];\n            this.preload_ = this.tech_.preloadTextTracks !== false;\n            const cues = new TextTrackCueList(this.cues_);\n            const activeCues = new TextTrackCueList(this.activeCues_);\n            let changed = false;\n            this.timeupdateHandler = bind_(this, function (event = {}) {\n                if (this.tech_.isDisposed()) {\n                    return;\n                }\n                if (!this.tech_.isReady_) {\n                    if (event.type !== 'timeupdate') {\n                        this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler);\n                    }\n                    return;\n                }\n\n                // Accessing this.activeCues for the side-effects of updating itself\n                // due to its nature as a getter function. Do not remove or cues will\n                // stop updating!\n                // Use the setter to prevent deletion from uglify (pure_getters rule)\n                this.activeCues = this.activeCues;\n                if (changed) {\n                    this.trigger('cuechange');\n                    changed = false;\n                }\n                if (event.type !== 'timeupdate') {\n                    this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler);\n                }\n            });\n            const disposeHandler = () => {\n                this.stopTracking();\n            };\n            this.tech_.one('dispose', disposeHandler);\n            if (mode !== 'disabled') {\n                this.startTracking();\n            }\n            Object.defineProperties(this, {\n                /**\n                 * @memberof TextTrack\n                 * @member {boolean} default\n                 *         If this track was set to be on or off by default. Cannot be changed after\n                 *         creation.\n                 * @instance\n                 *\n                 * @readonly\n                 */\n                default: {\n                    get() {\n                        return default_;\n                    },\n                    set() {}\n                },\n                /**\n                 * @memberof TextTrack\n                 * @member {string} mode\n                 *         Set the mode of this TextTrack to a valid {@link TextTrack~Mode}. Will\n                 *         not be set if setting to an invalid mode.\n                 * @instance\n                 *\n                 * @fires TextTrack#modechange\n                 */\n                mode: {\n                    get() {\n                        return mode;\n                    },\n                    set(newMode) {\n                        if (!TextTrackMode[newMode]) {\n                            return;\n                        }\n                        if (mode === newMode) {\n                            return;\n                        }\n                        mode = newMode;\n                        if (!this.preload_ && mode !== 'disabled' && this.cues.length === 0) {\n                            // On-demand load.\n                            loadTrack(this.src, this);\n                        }\n                        this.stopTracking();\n                        if (mode !== 'disabled') {\n                            this.startTracking();\n                        }\n                        /**\n                         * An event that fires when mode changes on this track. This allows\n                         * the TextTrackList that holds this track to act accordingly.\n                         *\n                         * > Note: This is not part of the spec!\n                         *\n                         * @event TextTrack#modechange\n                         * @type {Event}\n                         */\n                        this.trigger('modechange');\n                    }\n                },\n                /**\n                 * @memberof TextTrack\n                 * @member {TextTrackCueList} cues\n                 *         The text track cue list for this TextTrack.\n                 * @instance\n                 */\n                cues: {\n                    get() {\n                        if (!this.loaded_) {\n                            return null;\n                        }\n                        return cues;\n                    },\n                    set() {}\n                },\n                /**\n                 * @memberof TextTrack\n                 * @member {TextTrackCueList} activeCues\n                 *         The list text track cues that are currently active for this TextTrack.\n                 * @instance\n                 */\n                activeCues: {\n                    get() {\n                        if (!this.loaded_) {\n                            return null;\n                        }\n\n                        // nothing to do\n                        if (this.cues.length === 0) {\n                            return activeCues;\n                        }\n                        const ct = this.tech_.currentTime();\n                        const active = [];\n                        for (let i = 0, l = this.cues.length; i < l; i++) {\n                            const cue = this.cues[i];\n                            if (cue.startTime <= ct && cue.endTime >= ct) {\n                                active.push(cue);\n                            }\n                        }\n                        changed = false;\n                        if (active.length !== this.activeCues_.length) {\n                            changed = true;\n                        } else {\n                            for (let i = 0; i < active.length; i++) {\n                                if (this.activeCues_.indexOf(active[i]) === -1) {\n                                    changed = true;\n                                }\n                            }\n                        }\n                        this.activeCues_ = active;\n                        activeCues.setCues_(this.activeCues_);\n                        return activeCues;\n                    },\n                    // /!\\ Keep this setter empty (see the timeupdate handler above)\n                    set() {}\n                }\n            });\n            if (settings.src) {\n                this.src = settings.src;\n                if (!this.preload_) {\n                    // Tracks will load on-demand.\n                    // Act like we're loaded for other purposes.\n                    this.loaded_ = true;\n                }\n                if (this.preload_ || settings.kind !== 'subtitles' && settings.kind !== 'captions') {\n                    loadTrack(this.src, this);\n                }\n            } else {\n                this.loaded_ = true;\n            }\n        }\n        startTracking() {\n            // More precise cues based on requestVideoFrameCallback with a requestAnimationFram fallback\n            this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler);\n            // Also listen to timeupdate in case rVFC/rAF stops (window in background, audio in video el)\n            this.tech_.on('timeupdate', this.timeupdateHandler);\n        }\n        stopTracking() {\n            if (this.rvf_) {\n                this.tech_.cancelVideoFrameCallback(this.rvf_);\n                this.rvf_ = undefined;\n            }\n            this.tech_.off('timeupdate', this.timeupdateHandler);\n        }\n\n        /**\n         * Add a cue to the internal list of cues.\n         *\n         * @param {TextTrack~Cue} cue\n         *        The cue to add to our internal list\n         */\n        addCue(originalCue) {\n            let cue = originalCue;\n            if (window.vttjs && !(originalCue instanceof window.vttjs.VTTCue)) {\n                cue = new window.vttjs.VTTCue(originalCue.startTime, originalCue.endTime, originalCue.text);\n                for (const prop in originalCue) {\n                    if (!(prop in cue)) {\n                        cue[prop] = originalCue[prop];\n                    }\n                }\n\n                // make sure that `id` is copied over\n                cue.id = originalCue.id;\n                cue.originalCue_ = originalCue;\n            }\n            const tracks = this.tech_.textTracks();\n            for (let i = 0; i < tracks.length; i++) {\n                if (tracks[i] !== this) {\n                    tracks[i].removeCue(cue);\n                }\n            }\n            this.cues_.push(cue);\n            this.cues.setCues_(this.cues_);\n        }\n\n        /**\n         * Remove a cue from our internal list\n         *\n         * @param {TextTrack~Cue} removeCue\n         *        The cue to remove from our internal list\n         */\n        removeCue(removeCue) {\n            let i = this.cues_.length;\n            while (i--) {\n                const cue = this.cues_[i];\n                if (cue === removeCue || cue.originalCue_ && cue.originalCue_ === removeCue) {\n                    this.cues_.splice(i, 1);\n                    this.cues.setCues_(this.cues_);\n                    break;\n                }\n            }\n        }\n    }\n\n    /**\n     * cuechange - One or more cues in the track have become active or stopped being active.\n     */\n    TextTrack.prototype.allowedEvents_ = {\n        cuechange: 'cuechange'\n    };\n\n    /**\n     * A representation of a single `AudioTrack`. If it is part of an {@link AudioTrackList}\n     * only one `AudioTrack` in the list will be enabled at a time.\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotrack}\n     * @extends Track\n     */\n    class AudioTrack extends Track {\n        /**\n         * Create an instance of this class.\n         *\n         * @param {Object} [options={}]\n         *        Object of option names and values\n         *\n         * @param {AudioTrack~Kind} [options.kind='']\n         *        A valid audio track kind\n         *\n         * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n         *        A unique id for this AudioTrack.\n         *\n         * @param {string} [options.label='']\n         *        The menu label for this track.\n         *\n         * @param {string} [options.language='']\n         *        A valid two character language code.\n         *\n         * @param {boolean} [options.enabled]\n         *        If this track is the one that is currently playing. If this track is part of\n         *        an {@link AudioTrackList}, only one {@link AudioTrack} will be enabled.\n         */\n        constructor(options = {}) {\n            const settings = merge$2(options, {\n                kind: AudioTrackKind[options.kind] || ''\n            });\n            super(settings);\n            let enabled = false;\n\n            /**\n             * @memberof AudioTrack\n             * @member {boolean} enabled\n             *         If this `AudioTrack` is enabled or not. When setting this will\n             *         fire {@link AudioTrack#enabledchange} if the state of enabled is changed.\n             * @instance\n             *\n             * @fires VideoTrack#selectedchange\n             */\n            Object.defineProperty(this, 'enabled', {\n                get() {\n                    return enabled;\n                },\n                set(newEnabled) {\n                    // an invalid or unchanged value\n                    if (typeof newEnabled !== 'boolean' || newEnabled === enabled) {\n                        return;\n                    }\n                    enabled = newEnabled;\n\n                    /**\n                     * An event that fires when enabled changes on this track. This allows\n                     * the AudioTrackList that holds this track to act accordingly.\n                     *\n                     * > Note: This is not part of the spec! Native tracks will do\n                     *         this internally without an event.\n                     *\n                     * @event AudioTrack#enabledchange\n                     * @type {Event}\n                     */\n                    this.trigger('enabledchange');\n                }\n            });\n\n            // if the user sets this track to selected then\n            // set selected to that true value otherwise\n            // we keep it false\n            if (settings.enabled) {\n                this.enabled = settings.enabled;\n            }\n            this.loaded_ = true;\n        }\n    }\n\n    /**\n     * A representation of a single `VideoTrack`.\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotrack}\n     * @extends Track\n     */\n    class VideoTrack extends Track {\n        /**\n         * Create an instance of this class.\n         *\n         * @param {Object} [options={}]\n         *        Object of option names and values\n         *\n         * @param {string} [options.kind='']\n         *        A valid {@link VideoTrack~Kind}\n         *\n         * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n         *        A unique id for this AudioTrack.\n         *\n         * @param {string} [options.label='']\n         *        The menu label for this track.\n         *\n         * @param {string} [options.language='']\n         *        A valid two character language code.\n         *\n         * @param {boolean} [options.selected]\n         *        If this track is the one that is currently playing.\n         */\n        constructor(options = {}) {\n            const settings = merge$2(options, {\n                kind: VideoTrackKind[options.kind] || ''\n            });\n            super(settings);\n            let selected = false;\n\n            /**\n             * @memberof VideoTrack\n             * @member {boolean} selected\n             *         If this `VideoTrack` is selected or not. When setting this will\n             *         fire {@link VideoTrack#selectedchange} if the state of selected changed.\n             * @instance\n             *\n             * @fires VideoTrack#selectedchange\n             */\n            Object.defineProperty(this, 'selected', {\n                get() {\n                    return selected;\n                },\n                set(newSelected) {\n                    // an invalid or unchanged value\n                    if (typeof newSelected !== 'boolean' || newSelected === selected) {\n                        return;\n                    }\n                    selected = newSelected;\n\n                    /**\n                     * An event that fires when selected changes on this track. This allows\n                     * the VideoTrackList that holds this track to act accordingly.\n                     *\n                     * > Note: This is not part of the spec! Native tracks will do\n                     *         this internally without an event.\n                     *\n                     * @event VideoTrack#selectedchange\n                     * @type {Event}\n                     */\n                    this.trigger('selectedchange');\n                }\n            });\n\n            // if the user sets this track to selected then\n            // set selected to that true value otherwise\n            // we keep it false\n            if (settings.selected) {\n                this.selected = settings.selected;\n            }\n        }\n    }\n\n    /**\n     * @file html-track-element.js\n     */\n\n    /**\n     * A single track represented in the DOM.\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#htmltrackelement}\n     * @extends EventTarget\n     */\n    class HTMLTrackElement extends EventTarget$2 {\n        /**\n         * Create an instance of this class.\n         *\n         * @param {Object} options={}\n         *        Object of option names and values\n         *\n         * @param { import('../tech/tech').default } options.tech\n         *        A reference to the tech that owns this HTMLTrackElement.\n         *\n         * @param {TextTrack~Kind} [options.kind='subtitles']\n         *        A valid text track kind.\n         *\n         * @param {TextTrack~Mode} [options.mode='disabled']\n         *        A valid text track mode.\n         *\n         * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n         *        A unique id for this TextTrack.\n         *\n         * @param {string} [options.label='']\n         *        The menu label for this track.\n         *\n         * @param {string} [options.language='']\n         *        A valid two character language code.\n         *\n         * @param {string} [options.srclang='']\n         *        A valid two character language code. An alternative, but deprioritized\n         *        version of `options.language`\n         *\n         * @param {string} [options.src]\n         *        A url to TextTrack cues.\n         *\n         * @param {boolean} [options.default]\n         *        If this track should default to on or off.\n         */\n        constructor(options = {}) {\n            super();\n            let readyState;\n            const track = new TextTrack(options);\n            this.kind = track.kind;\n            this.src = track.src;\n            this.srclang = track.language;\n            this.label = track.label;\n            this.default = track.default;\n            Object.defineProperties(this, {\n                /**\n                 * @memberof HTMLTrackElement\n                 * @member {HTMLTrackElement~ReadyState} readyState\n                 *         The current ready state of the track element.\n                 * @instance\n                 */\n                readyState: {\n                    get() {\n                        return readyState;\n                    }\n                },\n                /**\n                 * @memberof HTMLTrackElement\n                 * @member {TextTrack} track\n                 *         The underlying TextTrack object.\n                 * @instance\n                 *\n                 */\n                track: {\n                    get() {\n                        return track;\n                    }\n                }\n            });\n            readyState = HTMLTrackElement.NONE;\n\n            /**\n             * @listens TextTrack#loadeddata\n             * @fires HTMLTrackElement#load\n             */\n            track.addEventListener('loadeddata', () => {\n                readyState = HTMLTrackElement.LOADED;\n                this.trigger({\n                    type: 'load',\n                    target: this\n                });\n            });\n        }\n    }\n    HTMLTrackElement.prototype.allowedEvents_ = {\n        load: 'load'\n    };\n\n    /**\n     * The text track not loaded state.\n     *\n     * @type {number}\n     * @static\n     */\n    HTMLTrackElement.NONE = 0;\n\n    /**\n     * The text track loading state.\n     *\n     * @type {number}\n     * @static\n     */\n    HTMLTrackElement.LOADING = 1;\n\n    /**\n     * The text track loaded state.\n     *\n     * @type {number}\n     * @static\n     */\n    HTMLTrackElement.LOADED = 2;\n\n    /**\n     * The text track failed to load state.\n     *\n     * @type {number}\n     * @static\n     */\n    HTMLTrackElement.ERROR = 3;\n\n    /*\n   * This file contains all track properties that are used in\n   * player.js, tech.js, html5.js and possibly other techs in the future.\n   */\n\n    const NORMAL = {\n        audio: {\n            ListClass: AudioTrackList,\n            TrackClass: AudioTrack,\n            capitalName: 'Audio'\n        },\n        video: {\n            ListClass: VideoTrackList,\n            TrackClass: VideoTrack,\n            capitalName: 'Video'\n        },\n        text: {\n            ListClass: TextTrackList,\n            TrackClass: TextTrack,\n            capitalName: 'Text'\n        }\n    };\n    Object.keys(NORMAL).forEach(function (type) {\n        NORMAL[type].getterName = `${type}Tracks`;\n        NORMAL[type].privateName = `${type}Tracks_`;\n    });\n    const REMOTE = {\n        remoteText: {\n            ListClass: TextTrackList,\n            TrackClass: TextTrack,\n            capitalName: 'RemoteText',\n            getterName: 'remoteTextTracks',\n            privateName: 'remoteTextTracks_'\n        },\n        remoteTextEl: {\n            ListClass: HtmlTrackElementList,\n            TrackClass: HTMLTrackElement,\n            capitalName: 'RemoteTextTrackEls',\n            getterName: 'remoteTextTrackEls',\n            privateName: 'remoteTextTrackEls_'\n        }\n    };\n    const ALL = Object.assign({}, NORMAL, REMOTE);\n    REMOTE.names = Object.keys(REMOTE);\n    NORMAL.names = Object.keys(NORMAL);\n    ALL.names = [].concat(REMOTE.names).concat(NORMAL.names);\n\n    var minDoc = {};\n\n    var topLevel = typeof commonjsGlobal !== 'undefined' ? commonjsGlobal : typeof window !== 'undefined' ? window : {};\n    var doccy;\n    if (typeof document !== 'undefined') {\n        doccy = document;\n    } else {\n        doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'];\n        if (!doccy) {\n            doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'] = minDoc;\n        }\n    }\n    var document_1 = doccy;\n\n    /**\n     * Copyright 2013 vtt.js Contributors\n     *\n     * Licensed under the Apache License, Version 2.0 (the \"License\");\n     * you may not use this file except in compliance with the License.\n     * You may obtain a copy of the License at\n     *\n     *   http://www.apache.org/licenses/LICENSE-2.0\n     *\n     * Unless required by applicable law or agreed to in writing, software\n     * distributed under the License is distributed on an \"AS IS\" BASIS,\n     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n     * See the License for the specific language governing permissions and\n     * limitations under the License.\n     */\n\n    /* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */\n    /* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */\n\n    var _objCreate = Object.create || function () {\n        function F() {}\n        return function (o) {\n            if (arguments.length !== 1) {\n                throw new Error('Object.create shim only accepts one parameter.');\n            }\n            F.prototype = o;\n            return new F();\n        };\n    }();\n\n    // Creates a new ParserError object from an errorData object. The errorData\n    // object should have default code and message properties. The default message\n    // property can be overriden by passing in a message parameter.\n    // See ParsingError.Errors below for acceptable errors.\n    function ParsingError(errorData, message) {\n        this.name = \"ParsingError\";\n        this.code = errorData.code;\n        this.message = message || errorData.message;\n    }\n    ParsingError.prototype = _objCreate(Error.prototype);\n    ParsingError.prototype.constructor = ParsingError;\n\n    // ParsingError metadata for acceptable ParsingErrors.\n    ParsingError.Errors = {\n        BadSignature: {\n            code: 0,\n            message: \"Malformed WebVTT signature.\"\n        },\n        BadTimeStamp: {\n            code: 1,\n            message: \"Malformed time stamp.\"\n        }\n    };\n\n    // Try to parse input as a time stamp.\n    function parseTimeStamp(input) {\n        function computeSeconds(h, m, s, f) {\n            return (h | 0) * 3600 + (m | 0) * 60 + (s | 0) + (f | 0) / 1000;\n        }\n        var m = input.match(/^(\\d+):(\\d{1,2})(:\\d{1,2})?\\.(\\d{3})/);\n        if (!m) {\n            return null;\n        }\n        if (m[3]) {\n            // Timestamp takes the form of [hours]:[minutes]:[seconds].[milliseconds]\n            return computeSeconds(m[1], m[2], m[3].replace(\":\", \"\"), m[4]);\n        } else if (m[1] > 59) {\n            // Timestamp takes the form of [hours]:[minutes].[milliseconds]\n            // First position is hours as it's over 59.\n            return computeSeconds(m[1], m[2], 0, m[4]);\n        } else {\n            // Timestamp takes the form of [minutes]:[seconds].[milliseconds]\n            return computeSeconds(0, m[1], m[2], m[4]);\n        }\n    }\n\n    // A settings object holds key/value pairs and will ignore anything but the first\n    // assignment to a specific key.\n    function Settings() {\n        this.values = _objCreate(null);\n    }\n    Settings.prototype = {\n        // Only accept the first assignment to any key.\n        set: function (k, v) {\n            if (!this.get(k) && v !== \"\") {\n                this.values[k] = v;\n            }\n        },\n        // Return the value for a key, or a default value.\n        // If 'defaultKey' is passed then 'dflt' is assumed to be an object with\n        // a number of possible default values as properties where 'defaultKey' is\n        // the key of the property that will be chosen; otherwise it's assumed to be\n        // a single value.\n        get: function (k, dflt, defaultKey) {\n            if (defaultKey) {\n                return this.has(k) ? this.values[k] : dflt[defaultKey];\n            }\n            return this.has(k) ? this.values[k] : dflt;\n        },\n        // Check whether we have a value for a key.\n        has: function (k) {\n            return k in this.values;\n        },\n        // Accept a setting if its one of the given alternatives.\n        alt: function (k, v, a) {\n            for (var n = 0; n < a.length; ++n) {\n                if (v === a[n]) {\n                    this.set(k, v);\n                    break;\n                }\n            }\n        },\n        // Accept a setting if its a valid (signed) integer.\n        integer: function (k, v) {\n            if (/^-?\\d+$/.test(v)) {\n                // integer\n                this.set(k, parseInt(v, 10));\n            }\n        },\n        // Accept a setting if its a valid percentage.\n        percent: function (k, v) {\n            if (v.match(/^([\\d]{1,3})(\\.[\\d]*)?%$/)) {\n                v = parseFloat(v);\n                if (v >= 0 && v <= 100) {\n                    this.set(k, v);\n                    return true;\n                }\n            }\n            return false;\n        }\n    };\n\n    // Helper function to parse input into groups separated by 'groupDelim', and\n    // interprete each group as a key/value pair separated by 'keyValueDelim'.\n    function parseOptions(input, callback, keyValueDelim, groupDelim) {\n        var groups = groupDelim ? input.split(groupDelim) : [input];\n        for (var i in groups) {\n            if (typeof groups[i] !== \"string\") {\n                continue;\n            }\n            var kv = groups[i].split(keyValueDelim);\n            if (kv.length !== 2) {\n                continue;\n            }\n            var k = kv[0].trim();\n            var v = kv[1].trim();\n            callback(k, v);\n        }\n    }\n    function parseCue(input, cue, regionList) {\n        // Remember the original input if we need to throw an error.\n        var oInput = input;\n        // 4.1 WebVTT timestamp\n        function consumeTimeStamp() {\n            var ts = parseTimeStamp(input);\n            if (ts === null) {\n                throw new ParsingError(ParsingError.Errors.BadTimeStamp, \"Malformed timestamp: \" + oInput);\n            }\n            // Remove time stamp from input.\n            input = input.replace(/^[^\\sa-zA-Z-]+/, \"\");\n            return ts;\n        }\n\n        // 4.4.2 WebVTT cue settings\n        function consumeCueSettings(input, cue) {\n            var settings = new Settings();\n            parseOptions(input, function (k, v) {\n                switch (k) {\n                    case \"region\":\n                        // Find the last region we parsed with the same region id.\n                        for (var i = regionList.length - 1; i >= 0; i--) {\n                            if (regionList[i].id === v) {\n                                settings.set(k, regionList[i].region);\n                                break;\n                            }\n                        }\n                        break;\n                    case \"vertical\":\n                        settings.alt(k, v, [\"rl\", \"lr\"]);\n                        break;\n                    case \"line\":\n                        var vals = v.split(\",\"),\n                            vals0 = vals[0];\n                        settings.integer(k, vals0);\n                        settings.percent(k, vals0) ? settings.set(\"snapToLines\", false) : null;\n                        settings.alt(k, vals0, [\"auto\"]);\n                        if (vals.length === 2) {\n                            settings.alt(\"lineAlign\", vals[1], [\"start\", \"center\", \"end\"]);\n                        }\n                        break;\n                    case \"position\":\n                        vals = v.split(\",\");\n                        settings.percent(k, vals[0]);\n                        if (vals.length === 2) {\n                            settings.alt(\"positionAlign\", vals[1], [\"start\", \"center\", \"end\"]);\n                        }\n                        break;\n                    case \"size\":\n                        settings.percent(k, v);\n                        break;\n                    case \"align\":\n                        settings.alt(k, v, [\"start\", \"center\", \"end\", \"left\", \"right\"]);\n                        break;\n                }\n            }, /:/, /\\s/);\n\n            // Apply default values for any missing fields.\n            cue.region = settings.get(\"region\", null);\n            cue.vertical = settings.get(\"vertical\", \"\");\n            try {\n                cue.line = settings.get(\"line\", \"auto\");\n            } catch (e) {}\n            cue.lineAlign = settings.get(\"lineAlign\", \"start\");\n            cue.snapToLines = settings.get(\"snapToLines\", true);\n            cue.size = settings.get(\"size\", 100);\n            // Safari still uses the old middle value and won't accept center\n            try {\n                cue.align = settings.get(\"align\", \"center\");\n            } catch (e) {\n                cue.align = settings.get(\"align\", \"middle\");\n            }\n            try {\n                cue.position = settings.get(\"position\", \"auto\");\n            } catch (e) {\n                cue.position = settings.get(\"position\", {\n                    start: 0,\n                    left: 0,\n                    center: 50,\n                    middle: 50,\n                    end: 100,\n                    right: 100\n                }, cue.align);\n            }\n            cue.positionAlign = settings.get(\"positionAlign\", {\n                start: \"start\",\n                left: \"start\",\n                center: \"center\",\n                middle: \"center\",\n                end: \"end\",\n                right: \"end\"\n            }, cue.align);\n        }\n        function skipWhitespace() {\n            input = input.replace(/^\\s+/, \"\");\n        }\n\n        // 4.1 WebVTT cue timings.\n        skipWhitespace();\n        cue.startTime = consumeTimeStamp(); // (1) collect cue start time\n        skipWhitespace();\n        if (input.substr(0, 3) !== \"-->\") {\n            // (3) next characters must match \"-->\"\n            throw new ParsingError(ParsingError.Errors.BadTimeStamp, \"Malformed time stamp (time stamps must be separated by '-->'): \" + oInput);\n        }\n        input = input.substr(3);\n        skipWhitespace();\n        cue.endTime = consumeTimeStamp(); // (5) collect cue end time\n\n        // 4.1 WebVTT cue settings list.\n        skipWhitespace();\n        consumeCueSettings(input, cue);\n    }\n\n    // When evaluating this file as part of a Webpack bundle for server\n    // side rendering, `document` is an empty object.\n    var TEXTAREA_ELEMENT = document_1.createElement && document_1.createElement(\"textarea\");\n    var TAG_NAME = {\n        c: \"span\",\n        i: \"i\",\n        b: \"b\",\n        u: \"u\",\n        ruby: \"ruby\",\n        rt: \"rt\",\n        v: \"span\",\n        lang: \"span\"\n    };\n\n    // 5.1 default text color\n    // 5.2 default text background color is equivalent to text color with bg_ prefix\n    var DEFAULT_COLOR_CLASS = {\n        white: 'rgba(255,255,255,1)',\n        lime: 'rgba(0,255,0,1)',\n        cyan: 'rgba(0,255,255,1)',\n        red: 'rgba(255,0,0,1)',\n        yellow: 'rgba(255,255,0,1)',\n        magenta: 'rgba(255,0,255,1)',\n        blue: 'rgba(0,0,255,1)',\n        black: 'rgba(0,0,0,1)'\n    };\n    var TAG_ANNOTATION = {\n        v: \"title\",\n        lang: \"lang\"\n    };\n    var NEEDS_PARENT = {\n        rt: \"ruby\"\n    };\n\n    // Parse content into a document fragment.\n    function parseContent(window, input) {\n        function nextToken() {\n            // Check for end-of-string.\n            if (!input) {\n                return null;\n            }\n\n            // Consume 'n' characters from the input.\n            function consume(result) {\n                input = input.substr(result.length);\n                return result;\n            }\n            var m = input.match(/^([^<]*)(<[^>]*>?)?/);\n            // If there is some text before the next tag, return it, otherwise return\n            // the tag.\n            return consume(m[1] ? m[1] : m[2]);\n        }\n        function unescape(s) {\n            TEXTAREA_ELEMENT.innerHTML = s;\n            s = TEXTAREA_ELEMENT.textContent;\n            TEXTAREA_ELEMENT.textContent = \"\";\n            return s;\n        }\n        function shouldAdd(current, element) {\n            return !NEEDS_PARENT[element.localName] || NEEDS_PARENT[element.localName] === current.localName;\n        }\n\n        // Create an element for this tag.\n        function createElement(type, annotation) {\n            var tagName = TAG_NAME[type];\n            if (!tagName) {\n                return null;\n            }\n            var element = window.document.createElement(tagName);\n            var name = TAG_ANNOTATION[type];\n            if (name && annotation) {\n                element[name] = annotation.trim();\n            }\n            return element;\n        }\n        var rootDiv = window.document.createElement(\"div\"),\n            current = rootDiv,\n            t,\n            tagStack = [];\n        while ((t = nextToken()) !== null) {\n            if (t[0] === '<') {\n                if (t[1] === \"/\") {\n                    // If the closing tag matches, move back up to the parent node.\n                    if (tagStack.length && tagStack[tagStack.length - 1] === t.substr(2).replace(\">\", \"\")) {\n                        tagStack.pop();\n                        current = current.parentNode;\n                    }\n                    // Otherwise just ignore the end tag.\n                    continue;\n                }\n                var ts = parseTimeStamp(t.substr(1, t.length - 2));\n                var node;\n                if (ts) {\n                    // Timestamps are lead nodes as well.\n                    node = window.document.createProcessingInstruction(\"timestamp\", ts);\n                    current.appendChild(node);\n                    continue;\n                }\n                var m = t.match(/^<([^.\\s/0-9>]+)(\\.[^\\s\\\\>]+)?([^>\\\\]+)?(\\\\?)>?$/);\n                // If we can't parse the tag, skip to the next tag.\n                if (!m) {\n                    continue;\n                }\n                // Try to construct an element, and ignore the tag if we couldn't.\n                node = createElement(m[1], m[3]);\n                if (!node) {\n                    continue;\n                }\n                // Determine if the tag should be added based on the context of where it\n                // is placed in the cuetext.\n                if (!shouldAdd(current, node)) {\n                    continue;\n                }\n                // Set the class list (as a list of classes, separated by space).\n                if (m[2]) {\n                    var classes = m[2].split('.');\n                    classes.forEach(function (cl) {\n                        var bgColor = /^bg_/.test(cl);\n                        // slice out `bg_` if it's a background color\n                        var colorName = bgColor ? cl.slice(3) : cl;\n                        if (DEFAULT_COLOR_CLASS.hasOwnProperty(colorName)) {\n                            var propName = bgColor ? 'background-color' : 'color';\n                            var propValue = DEFAULT_COLOR_CLASS[colorName];\n                            node.style[propName] = propValue;\n                        }\n                    });\n                    node.className = classes.join(' ');\n                }\n                // Append the node to the current node, and enter the scope of the new\n                // node.\n                tagStack.push(m[1]);\n                current.appendChild(node);\n                current = node;\n                continue;\n            }\n\n            // Text nodes are leaf nodes.\n            current.appendChild(window.document.createTextNode(unescape(t)));\n        }\n        return rootDiv;\n    }\n\n    // This is a list of all the Unicode characters that have a strong\n    // right-to-left category. What this means is that these characters are\n    // written right-to-left for sure. It was generated by pulling all the strong\n    // right-to-left characters out of the Unicode data table. That table can\n    // found at: http://www.unicode.org/Public/UNIDATA/UnicodeData.txt\n    var strongRTLRanges = [[0x5be, 0x5be], [0x5c0, 0x5c0], [0x5c3, 0x5c3], [0x5c6, 0x5c6], [0x5d0, 0x5ea], [0x5f0, 0x5f4], [0x608, 0x608], [0x60b, 0x60b], [0x60d, 0x60d], [0x61b, 0x61b], [0x61e, 0x64a], [0x66d, 0x66f], [0x671, 0x6d5], [0x6e5, 0x6e6], [0x6ee, 0x6ef], [0x6fa, 0x70d], [0x70f, 0x710], [0x712, 0x72f], [0x74d, 0x7a5], [0x7b1, 0x7b1], [0x7c0, 0x7ea], [0x7f4, 0x7f5], [0x7fa, 0x7fa], [0x800, 0x815], [0x81a, 0x81a], [0x824, 0x824], [0x828, 0x828], [0x830, 0x83e], [0x840, 0x858], [0x85e, 0x85e], [0x8a0, 0x8a0], [0x8a2, 0x8ac], [0x200f, 0x200f], [0xfb1d, 0xfb1d], [0xfb1f, 0xfb28], [0xfb2a, 0xfb36], [0xfb38, 0xfb3c], [0xfb3e, 0xfb3e], [0xfb40, 0xfb41], [0xfb43, 0xfb44], [0xfb46, 0xfbc1], [0xfbd3, 0xfd3d], [0xfd50, 0xfd8f], [0xfd92, 0xfdc7], [0xfdf0, 0xfdfc], [0xfe70, 0xfe74], [0xfe76, 0xfefc], [0x10800, 0x10805], [0x10808, 0x10808], [0x1080a, 0x10835], [0x10837, 0x10838], [0x1083c, 0x1083c], [0x1083f, 0x10855], [0x10857, 0x1085f], [0x10900, 0x1091b], [0x10920, 0x10939], [0x1093f, 0x1093f], [0x10980, 0x109b7], [0x109be, 0x109bf], [0x10a00, 0x10a00], [0x10a10, 0x10a13], [0x10a15, 0x10a17], [0x10a19, 0x10a33], [0x10a40, 0x10a47], [0x10a50, 0x10a58], [0x10a60, 0x10a7f], [0x10b00, 0x10b35], [0x10b40, 0x10b55], [0x10b58, 0x10b72], [0x10b78, 0x10b7f], [0x10c00, 0x10c48], [0x1ee00, 0x1ee03], [0x1ee05, 0x1ee1f], [0x1ee21, 0x1ee22], [0x1ee24, 0x1ee24], [0x1ee27, 0x1ee27], [0x1ee29, 0x1ee32], [0x1ee34, 0x1ee37], [0x1ee39, 0x1ee39], [0x1ee3b, 0x1ee3b], [0x1ee42, 0x1ee42], [0x1ee47, 0x1ee47], [0x1ee49, 0x1ee49], [0x1ee4b, 0x1ee4b], [0x1ee4d, 0x1ee4f], [0x1ee51, 0x1ee52], [0x1ee54, 0x1ee54], [0x1ee57, 0x1ee57], [0x1ee59, 0x1ee59], [0x1ee5b, 0x1ee5b], [0x1ee5d, 0x1ee5d], [0x1ee5f, 0x1ee5f], [0x1ee61, 0x1ee62], [0x1ee64, 0x1ee64], [0x1ee67, 0x1ee6a], [0x1ee6c, 0x1ee72], [0x1ee74, 0x1ee77], [0x1ee79, 0x1ee7c], [0x1ee7e, 0x1ee7e], [0x1ee80, 0x1ee89], [0x1ee8b, 0x1ee9b], [0x1eea1, 0x1eea3], [0x1eea5, 0x1eea9], [0x1eeab, 0x1eebb], [0x10fffd, 0x10fffd]];\n    function isStrongRTLChar(charCode) {\n        for (var i = 0; i < strongRTLRanges.length; i++) {\n            var currentRange = strongRTLRanges[i];\n            if (charCode >= currentRange[0] && charCode <= currentRange[1]) {\n                return true;\n            }\n        }\n        return false;\n    }\n    function determineBidi(cueDiv) {\n        var nodeStack = [],\n            text = \"\",\n            charCode;\n        if (!cueDiv || !cueDiv.childNodes) {\n            return \"ltr\";\n        }\n        function pushNodes(nodeStack, node) {\n            for (var i = node.childNodes.length - 1; i >= 0; i--) {\n                nodeStack.push(node.childNodes[i]);\n            }\n        }\n        function nextTextNode(nodeStack) {\n            if (!nodeStack || !nodeStack.length) {\n                return null;\n            }\n            var node = nodeStack.pop(),\n                text = node.textContent || node.innerText;\n            if (text) {\n                // TODO: This should match all unicode type B characters (paragraph\n                // separator characters). See issue #115.\n                var m = text.match(/^.*(\\n|\\r)/);\n                if (m) {\n                    nodeStack.length = 0;\n                    return m[0];\n                }\n                return text;\n            }\n            if (node.tagName === \"ruby\") {\n                return nextTextNode(nodeStack);\n            }\n            if (node.childNodes) {\n                pushNodes(nodeStack, node);\n                return nextTextNode(nodeStack);\n            }\n        }\n        pushNodes(nodeStack, cueDiv);\n        while (text = nextTextNode(nodeStack)) {\n            for (var i = 0; i < text.length; i++) {\n                charCode = text.charCodeAt(i);\n                if (isStrongRTLChar(charCode)) {\n                    return \"rtl\";\n                }\n            }\n        }\n        return \"ltr\";\n    }\n    function computeLinePos(cue) {\n        if (typeof cue.line === \"number\" && (cue.snapToLines || cue.line >= 0 && cue.line <= 100)) {\n            return cue.line;\n        }\n        if (!cue.track || !cue.track.textTrackList || !cue.track.textTrackList.mediaElement) {\n            return -1;\n        }\n        var track = cue.track,\n            trackList = track.textTrackList,\n            count = 0;\n        for (var i = 0; i < trackList.length && trackList[i] !== track; i++) {\n            if (trackList[i].mode === \"showing\") {\n                count++;\n            }\n        }\n        return ++count * -1;\n    }\n    function StyleBox() {}\n\n    // Apply styles to a div. If there is no div passed then it defaults to the\n    // div on 'this'.\n    StyleBox.prototype.applyStyles = function (styles, div) {\n        div = div || this.div;\n        for (var prop in styles) {\n            if (styles.hasOwnProperty(prop)) {\n                div.style[prop] = styles[prop];\n            }\n        }\n    };\n    StyleBox.prototype.formatStyle = function (val, unit) {\n        return val === 0 ? 0 : val + unit;\n    };\n\n    // Constructs the computed display state of the cue (a div). Places the div\n    // into the overlay which should be a block level element (usually a div).\n    function CueStyleBox(window, cue, styleOptions) {\n        StyleBox.call(this);\n        this.cue = cue;\n\n        // Parse our cue's text into a DOM tree rooted at 'cueDiv'. This div will\n        // have inline positioning and will function as the cue background box.\n        this.cueDiv = parseContent(window, cue.text);\n        var styles = {\n            color: \"rgba(255, 255, 255, 1)\",\n            backgroundColor: \"rgba(0, 0, 0, 0.8)\",\n            position: \"relative\",\n            left: 0,\n            right: 0,\n            top: 0,\n            bottom: 0,\n            display: \"inline\",\n            writingMode: cue.vertical === \"\" ? \"horizontal-tb\" : cue.vertical === \"lr\" ? \"vertical-lr\" : \"vertical-rl\",\n            unicodeBidi: \"plaintext\"\n        };\n        this.applyStyles(styles, this.cueDiv);\n\n        // Create an absolutely positioned div that will be used to position the cue\n        // div. Note, all WebVTT cue-setting alignments are equivalent to the CSS\n        // mirrors of them except middle instead of center on Safari.\n        this.div = window.document.createElement(\"div\");\n        styles = {\n            direction: determineBidi(this.cueDiv),\n            writingMode: cue.vertical === \"\" ? \"horizontal-tb\" : cue.vertical === \"lr\" ? \"vertical-lr\" : \"vertical-rl\",\n            unicodeBidi: \"plaintext\",\n            textAlign: cue.align === \"middle\" ? \"center\" : cue.align,\n            font: styleOptions.font,\n            whiteSpace: \"pre-line\",\n            position: \"absolute\"\n        };\n        this.applyStyles(styles);\n        this.div.appendChild(this.cueDiv);\n\n        // Calculate the distance from the reference edge of the viewport to the text\n        // position of the cue box. The reference edge will be resolved later when\n        // the box orientation styles are applied.\n        var textPos = 0;\n        switch (cue.positionAlign) {\n            case \"start\":\n                textPos = cue.position;\n                break;\n            case \"center\":\n                textPos = cue.position - cue.size / 2;\n                break;\n            case \"end\":\n                textPos = cue.position - cue.size;\n                break;\n        }\n\n        // Horizontal box orientation; textPos is the distance from the left edge of the\n        // area to the left edge of the box and cue.size is the distance extending to\n        // the right from there.\n        if (cue.vertical === \"\") {\n            this.applyStyles({\n                left: this.formatStyle(textPos, \"%\"),\n                width: this.formatStyle(cue.size, \"%\")\n            });\n            // Vertical box orientation; textPos is the distance from the top edge of the\n            // area to the top edge of the box and cue.size is the height extending\n            // downwards from there.\n        } else {\n            this.applyStyles({\n                top: this.formatStyle(textPos, \"%\"),\n                height: this.formatStyle(cue.size, \"%\")\n            });\n        }\n        this.move = function (box) {\n            this.applyStyles({\n                top: this.formatStyle(box.top, \"px\"),\n                bottom: this.formatStyle(box.bottom, \"px\"),\n                left: this.formatStyle(box.left, \"px\"),\n                right: this.formatStyle(box.right, \"px\"),\n                height: this.formatStyle(box.height, \"px\"),\n                width: this.formatStyle(box.width, \"px\")\n            });\n        };\n    }\n    CueStyleBox.prototype = _objCreate(StyleBox.prototype);\n    CueStyleBox.prototype.constructor = CueStyleBox;\n\n    // Represents the co-ordinates of an Element in a way that we can easily\n    // compute things with such as if it overlaps or intersects with another Element.\n    // Can initialize it with either a StyleBox or another BoxPosition.\n    function BoxPosition(obj) {\n        // Either a BoxPosition was passed in and we need to copy it, or a StyleBox\n        // was passed in and we need to copy the results of 'getBoundingClientRect'\n        // as the object returned is readonly. All co-ordinate values are in reference\n        // to the viewport origin (top left).\n        var lh, height, width, top;\n        if (obj.div) {\n            height = obj.div.offsetHeight;\n            width = obj.div.offsetWidth;\n            top = obj.div.offsetTop;\n            var rects = (rects = obj.div.childNodes) && (rects = rects[0]) && rects.getClientRects && rects.getClientRects();\n            obj = obj.div.getBoundingClientRect();\n            // In certain cases the outter div will be slightly larger then the sum of\n            // the inner div's lines. This could be due to bold text, etc, on some platforms.\n            // In this case we should get the average line height and use that. This will\n            // result in the desired behaviour.\n            lh = rects ? Math.max(rects[0] && rects[0].height || 0, obj.height / rects.length) : 0;\n        }\n        this.left = obj.left;\n        this.right = obj.right;\n        this.top = obj.top || top;\n        this.height = obj.height || height;\n        this.bottom = obj.bottom || top + (obj.height || height);\n        this.width = obj.width || width;\n        this.lineHeight = lh !== undefined ? lh : obj.lineHeight;\n    }\n\n    // Move the box along a particular axis. Optionally pass in an amount to move\n    // the box. If no amount is passed then the default is the line height of the\n    // box.\n    BoxPosition.prototype.move = function (axis, toMove) {\n        toMove = toMove !== undefined ? toMove : this.lineHeight;\n        switch (axis) {\n            case \"+x\":\n                this.left += toMove;\n                this.right += toMove;\n                break;\n            case \"-x\":\n                this.left -= toMove;\n                this.right -= toMove;\n                break;\n            case \"+y\":\n                this.top += toMove;\n                this.bottom += toMove;\n                break;\n            case \"-y\":\n                this.top -= toMove;\n                this.bottom -= toMove;\n                break;\n        }\n    };\n\n    // Check if this box overlaps another box, b2.\n    BoxPosition.prototype.overlaps = function (b2) {\n        return this.left < b2.right && this.right > b2.left && this.top < b2.bottom && this.bottom > b2.top;\n    };\n\n    // Check if this box overlaps any other boxes in boxes.\n    BoxPosition.prototype.overlapsAny = function (boxes) {\n        for (var i = 0; i < boxes.length; i++) {\n            if (this.overlaps(boxes[i])) {\n                return true;\n            }\n        }\n        return false;\n    };\n\n    // Check if this box is within another box.\n    BoxPosition.prototype.within = function (container) {\n        return this.top >= container.top && this.bottom <= container.bottom && this.left >= container.left && this.right <= container.right;\n    };\n\n    // Check if this box is entirely within the container or it is overlapping\n    // on the edge opposite of the axis direction passed. For example, if \"+x\" is\n    // passed and the box is overlapping on the left edge of the container, then\n    // return true.\n    BoxPosition.prototype.overlapsOppositeAxis = function (container, axis) {\n        switch (axis) {\n            case \"+x\":\n                return this.left < container.left;\n            case \"-x\":\n                return this.right > container.right;\n            case \"+y\":\n                return this.top < container.top;\n            case \"-y\":\n                return this.bottom > container.bottom;\n        }\n    };\n\n    // Find the percentage of the area that this box is overlapping with another\n    // box.\n    BoxPosition.prototype.intersectPercentage = function (b2) {\n        var x = Math.max(0, Math.min(this.right, b2.right) - Math.max(this.left, b2.left)),\n            y = Math.max(0, Math.min(this.bottom, b2.bottom) - Math.max(this.top, b2.top)),\n            intersectArea = x * y;\n        return intersectArea / (this.height * this.width);\n    };\n\n    // Convert the positions from this box to CSS compatible positions using\n    // the reference container's positions. This has to be done because this\n    // box's positions are in reference to the viewport origin, whereas, CSS\n    // values are in referecne to their respective edges.\n    BoxPosition.prototype.toCSSCompatValues = function (reference) {\n        return {\n            top: this.top - reference.top,\n            bottom: reference.bottom - this.bottom,\n            left: this.left - reference.left,\n            right: reference.right - this.right,\n            height: this.height,\n            width: this.width\n        };\n    };\n\n    // Get an object that represents the box's position without anything extra.\n    // Can pass a StyleBox, HTMLElement, or another BoxPositon.\n    BoxPosition.getSimpleBoxPosition = function (obj) {\n        var height = obj.div ? obj.div.offsetHeight : obj.tagName ? obj.offsetHeight : 0;\n        var width = obj.div ? obj.div.offsetWidth : obj.tagName ? obj.offsetWidth : 0;\n        var top = obj.div ? obj.div.offsetTop : obj.tagName ? obj.offsetTop : 0;\n        obj = obj.div ? obj.div.getBoundingClientRect() : obj.tagName ? obj.getBoundingClientRect() : obj;\n        var ret = {\n            left: obj.left,\n            right: obj.right,\n            top: obj.top || top,\n            height: obj.height || height,\n            bottom: obj.bottom || top + (obj.height || height),\n            width: obj.width || width\n        };\n        return ret;\n    };\n\n    // Move a StyleBox to its specified, or next best, position. The containerBox\n    // is the box that contains the StyleBox, such as a div. boxPositions are\n    // a list of other boxes that the styleBox can't overlap with.\n    function moveBoxToLinePosition(window, styleBox, containerBox, boxPositions) {\n        // Find the best position for a cue box, b, on the video. The axis parameter\n        // is a list of axis, the order of which, it will move the box along. For example:\n        // Passing [\"+x\", \"-x\"] will move the box first along the x axis in the positive\n        // direction. If it doesn't find a good position for it there it will then move\n        // it along the x axis in the negative direction.\n        function findBestPosition(b, axis) {\n            var bestPosition,\n                specifiedPosition = new BoxPosition(b),\n                percentage = 1; // Highest possible so the first thing we get is better.\n\n            for (var i = 0; i < axis.length; i++) {\n                while (b.overlapsOppositeAxis(containerBox, axis[i]) || b.within(containerBox) && b.overlapsAny(boxPositions)) {\n                    b.move(axis[i]);\n                }\n                // We found a spot where we aren't overlapping anything. This is our\n                // best position.\n                if (b.within(containerBox)) {\n                    return b;\n                }\n                var p = b.intersectPercentage(containerBox);\n                // If we're outside the container box less then we were on our last try\n                // then remember this position as the best position.\n                if (percentage > p) {\n                    bestPosition = new BoxPosition(b);\n                    percentage = p;\n                }\n                // Reset the box position to the specified position.\n                b = new BoxPosition(specifiedPosition);\n            }\n            return bestPosition || specifiedPosition;\n        }\n        var boxPosition = new BoxPosition(styleBox),\n            cue = styleBox.cue,\n            linePos = computeLinePos(cue),\n            axis = [];\n\n        // If we have a line number to align the cue to.\n        if (cue.snapToLines) {\n            var size;\n            switch (cue.vertical) {\n                case \"\":\n                    axis = [\"+y\", \"-y\"];\n                    size = \"height\";\n                    break;\n                case \"rl\":\n                    axis = [\"+x\", \"-x\"];\n                    size = \"width\";\n                    break;\n                case \"lr\":\n                    axis = [\"-x\", \"+x\"];\n                    size = \"width\";\n                    break;\n            }\n            var step = boxPosition.lineHeight,\n                position = step * Math.round(linePos),\n                maxPosition = containerBox[size] + step,\n                initialAxis = axis[0];\n\n            // If the specified intial position is greater then the max position then\n            // clamp the box to the amount of steps it would take for the box to\n            // reach the max position.\n            if (Math.abs(position) > maxPosition) {\n                position = position < 0 ? -1 : 1;\n                position *= Math.ceil(maxPosition / step) * step;\n            }\n\n            // If computed line position returns negative then line numbers are\n            // relative to the bottom of the video instead of the top. Therefore, we\n            // need to increase our initial position by the length or width of the\n            // video, depending on the writing direction, and reverse our axis directions.\n            if (linePos < 0) {\n                position += cue.vertical === \"\" ? containerBox.height : containerBox.width;\n                axis = axis.reverse();\n            }\n\n            // Move the box to the specified position. This may not be its best\n            // position.\n            boxPosition.move(initialAxis, position);\n        } else {\n            // If we have a percentage line value for the cue.\n            var calculatedPercentage = boxPosition.lineHeight / containerBox.height * 100;\n            switch (cue.lineAlign) {\n                case \"center\":\n                    linePos -= calculatedPercentage / 2;\n                    break;\n                case \"end\":\n                    linePos -= calculatedPercentage;\n                    break;\n            }\n\n            // Apply initial line position to the cue box.\n            switch (cue.vertical) {\n                case \"\":\n                    styleBox.applyStyles({\n                        top: styleBox.formatStyle(linePos, \"%\")\n                    });\n                    break;\n                case \"rl\":\n                    styleBox.applyStyles({\n                        left: styleBox.formatStyle(linePos, \"%\")\n                    });\n                    break;\n                case \"lr\":\n                    styleBox.applyStyles({\n                        right: styleBox.formatStyle(linePos, \"%\")\n                    });\n                    break;\n            }\n            axis = [\"+y\", \"-x\", \"+x\", \"-y\"];\n\n            // Get the box position again after we've applied the specified positioning\n            // to it.\n            boxPosition = new BoxPosition(styleBox);\n        }\n        var bestPosition = findBestPosition(boxPosition, axis);\n        styleBox.move(bestPosition.toCSSCompatValues(containerBox));\n    }\n    function WebVTT$1() {\n        // Nothing\n    }\n\n    // Helper to allow strings to be decoded instead of the default binary utf8 data.\n    WebVTT$1.StringDecoder = function () {\n        return {\n            decode: function (data) {\n                if (!data) {\n                    return \"\";\n                }\n                if (typeof data !== \"string\") {\n                    throw new Error(\"Error - expected string data.\");\n                }\n                return decodeURIComponent(encodeURIComponent(data));\n            }\n        };\n    };\n    WebVTT$1.convertCueToDOMTree = function (window, cuetext) {\n        if (!window || !cuetext) {\n            return null;\n        }\n        return parseContent(window, cuetext);\n    };\n    var FONT_SIZE_PERCENT = 0.05;\n    var FONT_STYLE = \"sans-serif\";\n    var CUE_BACKGROUND_PADDING = \"1.5%\";\n\n    // Runs the processing model over the cues and regions passed to it.\n    // @param overlay A block level element (usually a div) that the computed cues\n    //                and regions will be placed into.\n    WebVTT$1.processCues = function (window, cues, overlay) {\n        if (!window || !cues || !overlay) {\n            return null;\n        }\n\n        // Remove all previous children.\n        while (overlay.firstChild) {\n            overlay.removeChild(overlay.firstChild);\n        }\n        var paddedOverlay = window.document.createElement(\"div\");\n        paddedOverlay.style.position = \"absolute\";\n        paddedOverlay.style.left = \"0\";\n        paddedOverlay.style.right = \"0\";\n        paddedOverlay.style.top = \"0\";\n        paddedOverlay.style.bottom = \"0\";\n        paddedOverlay.style.margin = CUE_BACKGROUND_PADDING;\n        overlay.appendChild(paddedOverlay);\n\n        // Determine if we need to compute the display states of the cues. This could\n        // be the case if a cue's state has been changed since the last computation or\n        // if it has not been computed yet.\n        function shouldCompute(cues) {\n            for (var i = 0; i < cues.length; i++) {\n                if (cues[i].hasBeenReset || !cues[i].displayState) {\n                    return true;\n                }\n            }\n            return false;\n        }\n\n        // We don't need to recompute the cues' display states. Just reuse them.\n        if (!shouldCompute(cues)) {\n            for (var i = 0; i < cues.length; i++) {\n                paddedOverlay.appendChild(cues[i].displayState);\n            }\n            return;\n        }\n        var boxPositions = [],\n            containerBox = BoxPosition.getSimpleBoxPosition(paddedOverlay),\n            fontSize = Math.round(containerBox.height * FONT_SIZE_PERCENT * 100) / 100;\n        var styleOptions = {\n            font: fontSize + \"px \" + FONT_STYLE\n        };\n        (function () {\n            var styleBox, cue;\n            for (var i = 0; i < cues.length; i++) {\n                cue = cues[i];\n\n                // Compute the intial position and styles of the cue div.\n                styleBox = new CueStyleBox(window, cue, styleOptions);\n                paddedOverlay.appendChild(styleBox.div);\n\n                // Move the cue div to it's correct line position.\n                moveBoxToLinePosition(window, styleBox, containerBox, boxPositions);\n\n                // Remember the computed div so that we don't have to recompute it later\n                // if we don't have too.\n                cue.displayState = styleBox.div;\n                boxPositions.push(BoxPosition.getSimpleBoxPosition(styleBox));\n            }\n        })();\n    };\n    WebVTT$1.Parser = function (window, vttjs, decoder) {\n        if (!decoder) {\n            decoder = vttjs;\n            vttjs = {};\n        }\n        if (!vttjs) {\n            vttjs = {};\n        }\n        this.window = window;\n        this.vttjs = vttjs;\n        this.state = \"INITIAL\";\n        this.buffer = \"\";\n        this.decoder = decoder || new TextDecoder(\"utf8\");\n        this.regionList = [];\n    };\n    WebVTT$1.Parser.prototype = {\n        // If the error is a ParsingError then report it to the consumer if\n        // possible. If it's not a ParsingError then throw it like normal.\n        reportOrThrowError: function (e) {\n            if (e instanceof ParsingError) {\n                this.onparsingerror && this.onparsingerror(e);\n            } else {\n                throw e;\n            }\n        },\n        parse: function (data) {\n            var self = this;\n\n            // If there is no data then we won't decode it, but will just try to parse\n            // whatever is in buffer already. This may occur in circumstances, for\n            // example when flush() is called.\n            if (data) {\n                // Try to decode the data that we received.\n                self.buffer += self.decoder.decode(data, {\n                    stream: true\n                });\n            }\n            function collectNextLine() {\n                var buffer = self.buffer;\n                var pos = 0;\n                while (pos < buffer.length && buffer[pos] !== '\\r' && buffer[pos] !== '\\n') {\n                    ++pos;\n                }\n                var line = buffer.substr(0, pos);\n                // Advance the buffer early in case we fail below.\n                if (buffer[pos] === '\\r') {\n                    ++pos;\n                }\n                if (buffer[pos] === '\\n') {\n                    ++pos;\n                }\n                self.buffer = buffer.substr(pos);\n                return line;\n            }\n\n            // 3.4 WebVTT region and WebVTT region settings syntax\n            function parseRegion(input) {\n                var settings = new Settings();\n                parseOptions(input, function (k, v) {\n                    switch (k) {\n                        case \"id\":\n                            settings.set(k, v);\n                            break;\n                        case \"width\":\n                            settings.percent(k, v);\n                            break;\n                        case \"lines\":\n                            settings.integer(k, v);\n                            break;\n                        case \"regionanchor\":\n                        case \"viewportanchor\":\n                            var xy = v.split(',');\n                            if (xy.length !== 2) {\n                                break;\n                            }\n                            // We have to make sure both x and y parse, so use a temporary\n                            // settings object here.\n                            var anchor = new Settings();\n                            anchor.percent(\"x\", xy[0]);\n                            anchor.percent(\"y\", xy[1]);\n                            if (!anchor.has(\"x\") || !anchor.has(\"y\")) {\n                                break;\n                            }\n                            settings.set(k + \"X\", anchor.get(\"x\"));\n                            settings.set(k + \"Y\", anchor.get(\"y\"));\n                            break;\n                        case \"scroll\":\n                            settings.alt(k, v, [\"up\"]);\n                            break;\n                    }\n                }, /=/, /\\s/);\n\n                // Create the region, using default values for any values that were not\n                // specified.\n                if (settings.has(\"id\")) {\n                    var region = new (self.vttjs.VTTRegion || self.window.VTTRegion)();\n                    region.width = settings.get(\"width\", 100);\n                    region.lines = settings.get(\"lines\", 3);\n                    region.regionAnchorX = settings.get(\"regionanchorX\", 0);\n                    region.regionAnchorY = settings.get(\"regionanchorY\", 100);\n                    region.viewportAnchorX = settings.get(\"viewportanchorX\", 0);\n                    region.viewportAnchorY = settings.get(\"viewportanchorY\", 100);\n                    region.scroll = settings.get(\"scroll\", \"\");\n                    // Register the region.\n                    self.onregion && self.onregion(region);\n                    // Remember the VTTRegion for later in case we parse any VTTCues that\n                    // reference it.\n                    self.regionList.push({\n                        id: settings.get(\"id\"),\n                        region: region\n                    });\n                }\n            }\n\n            // draft-pantos-http-live-streaming-20\n            // https://tools.ietf.org/html/draft-pantos-http-live-streaming-20#section-3.5\n            // 3.5 WebVTT\n            function parseTimestampMap(input) {\n                var settings = new Settings();\n                parseOptions(input, function (k, v) {\n                    switch (k) {\n                        case \"MPEGT\":\n                            settings.integer(k + 'S', v);\n                            break;\n                        case \"LOCA\":\n                            settings.set(k + 'L', parseTimeStamp(v));\n                            break;\n                    }\n                }, /[^\\d]:/, /,/);\n                self.ontimestampmap && self.ontimestampmap({\n                    \"MPEGTS\": settings.get(\"MPEGTS\"),\n                    \"LOCAL\": settings.get(\"LOCAL\")\n                });\n            }\n\n            // 3.2 WebVTT metadata header syntax\n            function parseHeader(input) {\n                if (input.match(/X-TIMESTAMP-MAP/)) {\n                    // This line contains HLS X-TIMESTAMP-MAP metadata\n                    parseOptions(input, function (k, v) {\n                        switch (k) {\n                            case \"X-TIMESTAMP-MAP\":\n                                parseTimestampMap(v);\n                                break;\n                        }\n                    }, /=/);\n                } else {\n                    parseOptions(input, function (k, v) {\n                        switch (k) {\n                            case \"Region\":\n                                // 3.3 WebVTT region metadata header syntax\n                                parseRegion(v);\n                                break;\n                        }\n                    }, /:/);\n                }\n            }\n\n            // 5.1 WebVTT file parsing.\n            try {\n                var line;\n                if (self.state === \"INITIAL\") {\n                    // We can't start parsing until we have the first line.\n                    if (!/\\r\\n|\\n/.test(self.buffer)) {\n                        return this;\n                    }\n                    line = collectNextLine();\n                    var m = line.match(/^WEBVTT([ \\t].*)?$/);\n                    if (!m || !m[0]) {\n                        throw new ParsingError(ParsingError.Errors.BadSignature);\n                    }\n                    self.state = \"HEADER\";\n                }\n                var alreadyCollectedLine = false;\n                while (self.buffer) {\n                    // We can't parse a line until we have the full line.\n                    if (!/\\r\\n|\\n/.test(self.buffer)) {\n                        return this;\n                    }\n                    if (!alreadyCollectedLine) {\n                        line = collectNextLine();\n                    } else {\n                        alreadyCollectedLine = false;\n                    }\n                    switch (self.state) {\n                        case \"HEADER\":\n                            // 13-18 - Allow a header (metadata) under the WEBVTT line.\n                            if (/:/.test(line)) {\n                                parseHeader(line);\n                            } else if (!line) {\n                                // An empty line terminates the header and starts the body (cues).\n                                self.state = \"ID\";\n                            }\n                            continue;\n                        case \"NOTE\":\n                            // Ignore NOTE blocks.\n                            if (!line) {\n                                self.state = \"ID\";\n                            }\n                            continue;\n                        case \"ID\":\n                            // Check for the start of NOTE blocks.\n                            if (/^NOTE($|[ \\t])/.test(line)) {\n                                self.state = \"NOTE\";\n                                break;\n                            }\n                            // 19-29 - Allow any number of line terminators, then initialize new cue values.\n                            if (!line) {\n                                continue;\n                            }\n                            self.cue = new (self.vttjs.VTTCue || self.window.VTTCue)(0, 0, \"\");\n                            // Safari still uses the old middle value and won't accept center\n                            try {\n                                self.cue.align = \"center\";\n                            } catch (e) {\n                                self.cue.align = \"middle\";\n                            }\n                            self.state = \"CUE\";\n                            // 30-39 - Check if self line contains an optional identifier or timing data.\n                            if (line.indexOf(\"-->\") === -1) {\n                                self.cue.id = line;\n                                continue;\n                            }\n                        // Process line as start of a cue.\n                        /*falls through*/\n                        case \"CUE\":\n                            // 40 - Collect cue timings and settings.\n                            try {\n                                parseCue(line, self.cue, self.regionList);\n                            } catch (e) {\n                                self.reportOrThrowError(e);\n                                // In case of an error ignore rest of the cue.\n                                self.cue = null;\n                                self.state = \"BADCUE\";\n                                continue;\n                            }\n                            self.state = \"CUETEXT\";\n                            continue;\n                        case \"CUETEXT\":\n                            var hasSubstring = line.indexOf(\"-->\") !== -1;\n                            // 34 - If we have an empty line then report the cue.\n                            // 35 - If we have the special substring '-->' then report the cue,\n                            // but do not collect the line as we need to process the current\n                            // one as a new cue.\n                            if (!line || hasSubstring && (alreadyCollectedLine = true)) {\n                                // We are done parsing self cue.\n                                self.oncue && self.oncue(self.cue);\n                                self.cue = null;\n                                self.state = \"ID\";\n                                continue;\n                            }\n                            if (self.cue.text) {\n                                self.cue.text += \"\\n\";\n                            }\n                            self.cue.text += line.replace(/\\u2028/g, '\\n').replace(/u2029/g, '\\n');\n                            continue;\n                        case \"BADCUE\":\n                            // BADCUE\n                            // 54-62 - Collect and discard the remaining cue.\n                            if (!line) {\n                                self.state = \"ID\";\n                            }\n                            continue;\n                    }\n                }\n            } catch (e) {\n                self.reportOrThrowError(e);\n\n                // If we are currently parsing a cue, report what we have.\n                if (self.state === \"CUETEXT\" && self.cue && self.oncue) {\n                    self.oncue(self.cue);\n                }\n                self.cue = null;\n                // Enter BADWEBVTT state if header was not parsed correctly otherwise\n                // another exception occurred so enter BADCUE state.\n                self.state = self.state === \"INITIAL\" ? \"BADWEBVTT\" : \"BADCUE\";\n            }\n            return this;\n        },\n        flush: function () {\n            var self = this;\n            try {\n                // Finish decoding the stream.\n                self.buffer += self.decoder.decode();\n                // Synthesize the end of the current cue or region.\n                if (self.cue || self.state === \"HEADER\") {\n                    self.buffer += \"\\n\\n\";\n                    self.parse();\n                }\n                // If we've flushed, parsed, and we're still on the INITIAL state then\n                // that means we don't have enough of the stream to parse the first\n                // line.\n                if (self.state === \"INITIAL\") {\n                    throw new ParsingError(ParsingError.Errors.BadSignature);\n                }\n            } catch (e) {\n                self.reportOrThrowError(e);\n            }\n            self.onflush && self.onflush();\n            return this;\n        }\n    };\n    var vtt = WebVTT$1;\n\n    /**\n     * Copyright 2013 vtt.js Contributors\n     *\n     * Licensed under the Apache License, Version 2.0 (the \"License\");\n     * you may not use this file except in compliance with the License.\n     * You may obtain a copy of the License at\n     *\n     *   http://www.apache.org/licenses/LICENSE-2.0\n     *\n     * Unless required by applicable law or agreed to in writing, software\n     * distributed under the License is distributed on an \"AS IS\" BASIS,\n     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n     * See the License for the specific language governing permissions and\n     * limitations under the License.\n     */\n\n    var autoKeyword = \"auto\";\n    var directionSetting = {\n        \"\": 1,\n        \"lr\": 1,\n        \"rl\": 1\n    };\n    var alignSetting = {\n        \"start\": 1,\n        \"center\": 1,\n        \"end\": 1,\n        \"left\": 1,\n        \"right\": 1,\n        \"auto\": 1,\n        \"line-left\": 1,\n        \"line-right\": 1\n    };\n    function findDirectionSetting(value) {\n        if (typeof value !== \"string\") {\n            return false;\n        }\n        var dir = directionSetting[value.toLowerCase()];\n        return dir ? value.toLowerCase() : false;\n    }\n    function findAlignSetting(value) {\n        if (typeof value !== \"string\") {\n            return false;\n        }\n        var align = alignSetting[value.toLowerCase()];\n        return align ? value.toLowerCase() : false;\n    }\n    function VTTCue(startTime, endTime, text) {\n        /**\n         * Shim implementation specific properties. These properties are not in\n         * the spec.\n         */\n\n        // Lets us know when the VTTCue's data has changed in such a way that we need\n        // to recompute its display state. This lets us compute its display state\n        // lazily.\n        this.hasBeenReset = false;\n\n        /**\n         * VTTCue and TextTrackCue properties\n         * http://dev.w3.org/html5/webvtt/#vttcue-interface\n         */\n\n        var _id = \"\";\n        var _pauseOnExit = false;\n        var _startTime = startTime;\n        var _endTime = endTime;\n        var _text = text;\n        var _region = null;\n        var _vertical = \"\";\n        var _snapToLines = true;\n        var _line = \"auto\";\n        var _lineAlign = \"start\";\n        var _position = \"auto\";\n        var _positionAlign = \"auto\";\n        var _size = 100;\n        var _align = \"center\";\n        Object.defineProperties(this, {\n            \"id\": {\n                enumerable: true,\n                get: function () {\n                    return _id;\n                },\n                set: function (value) {\n                    _id = \"\" + value;\n                }\n            },\n            \"pauseOnExit\": {\n                enumerable: true,\n                get: function () {\n                    return _pauseOnExit;\n                },\n                set: function (value) {\n                    _pauseOnExit = !!value;\n                }\n            },\n            \"startTime\": {\n                enumerable: true,\n                get: function () {\n                    return _startTime;\n                },\n                set: function (value) {\n                    if (typeof value !== \"number\") {\n                        throw new TypeError(\"Start time must be set to a number.\");\n                    }\n                    _startTime = value;\n                    this.hasBeenReset = true;\n                }\n            },\n            \"endTime\": {\n                enumerable: true,\n                get: function () {\n                    return _endTime;\n                },\n                set: function (value) {\n                    if (typeof value !== \"number\") {\n                        throw new TypeError(\"End time must be set to a number.\");\n                    }\n                    _endTime = value;\n                    this.hasBeenReset = true;\n                }\n            },\n            \"text\": {\n                enumerable: true,\n                get: function () {\n                    return _text;\n                },\n                set: function (value) {\n                    _text = \"\" + value;\n                    this.hasBeenReset = true;\n                }\n            },\n            \"region\": {\n                enumerable: true,\n                get: function () {\n                    return _region;\n                },\n                set: function (value) {\n                    _region = value;\n                    this.hasBeenReset = true;\n                }\n            },\n            \"vertical\": {\n                enumerable: true,\n                get: function () {\n                    return _vertical;\n                },\n                set: function (value) {\n                    var setting = findDirectionSetting(value);\n                    // Have to check for false because the setting an be an empty string.\n                    if (setting === false) {\n                        throw new SyntaxError(\"Vertical: an invalid or illegal direction string was specified.\");\n                    }\n                    _vertical = setting;\n                    this.hasBeenReset = true;\n                }\n            },\n            \"snapToLines\": {\n                enumerable: true,\n                get: function () {\n                    return _snapToLines;\n                },\n                set: function (value) {\n                    _snapToLines = !!value;\n                    this.hasBeenReset = true;\n                }\n            },\n            \"line\": {\n                enumerable: true,\n                get: function () {\n                    return _line;\n                },\n                set: function (value) {\n                    if (typeof value !== \"number\" && value !== autoKeyword) {\n                        throw new SyntaxError(\"Line: an invalid number or illegal string was specified.\");\n                    }\n                    _line = value;\n                    this.hasBeenReset = true;\n                }\n            },\n            \"lineAlign\": {\n                enumerable: true,\n                get: function () {\n                    return _lineAlign;\n                },\n                set: function (value) {\n                    var setting = findAlignSetting(value);\n                    if (!setting) {\n                        console.warn(\"lineAlign: an invalid or illegal string was specified.\");\n                    } else {\n                        _lineAlign = setting;\n                        this.hasBeenReset = true;\n                    }\n                }\n            },\n            \"position\": {\n                enumerable: true,\n                get: function () {\n                    return _position;\n                },\n                set: function (value) {\n                    if (value < 0 || value > 100) {\n                        throw new Error(\"Position must be between 0 and 100.\");\n                    }\n                    _position = value;\n                    this.hasBeenReset = true;\n                }\n            },\n            \"positionAlign\": {\n                enumerable: true,\n                get: function () {\n                    return _positionAlign;\n                },\n                set: function (value) {\n                    var setting = findAlignSetting(value);\n                    if (!setting) {\n                        console.warn(\"positionAlign: an invalid or illegal string was specified.\");\n                    } else {\n                        _positionAlign = setting;\n                        this.hasBeenReset = true;\n                    }\n                }\n            },\n            \"size\": {\n                enumerable: true,\n                get: function () {\n                    return _size;\n                },\n                set: function (value) {\n                    if (value < 0 || value > 100) {\n                        throw new Error(\"Size must be between 0 and 100.\");\n                    }\n                    _size = value;\n                    this.hasBeenReset = true;\n                }\n            },\n            \"align\": {\n                enumerable: true,\n                get: function () {\n                    return _align;\n                },\n                set: function (value) {\n                    var setting = findAlignSetting(value);\n                    if (!setting) {\n                        throw new SyntaxError(\"align: an invalid or illegal alignment string was specified.\");\n                    }\n                    _align = setting;\n                    this.hasBeenReset = true;\n                }\n            }\n        });\n\n        /**\n         * Other <track> spec defined properties\n         */\n\n        // http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#text-track-cue-display-state\n        this.displayState = undefined;\n    }\n\n    /**\n     * VTTCue methods\n     */\n\n    VTTCue.prototype.getCueAsHTML = function () {\n        // Assume WebVTT.convertCueToDOMTree is on the global.\n        return WebVTT.convertCueToDOMTree(window, this.text);\n    };\n    var vttcue = VTTCue;\n\n    /**\n     * Copyright 2013 vtt.js Contributors\n     *\n     * Licensed under the Apache License, Version 2.0 (the \"License\");\n     * you may not use this file except in compliance with the License.\n     * You may obtain a copy of the License at\n     *\n     *   http://www.apache.org/licenses/LICENSE-2.0\n     *\n     * Unless required by applicable law or agreed to in writing, software\n     * distributed under the License is distributed on an \"AS IS\" BASIS,\n     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n     * See the License for the specific language governing permissions and\n     * limitations under the License.\n     */\n\n    var scrollSetting = {\n        \"\": true,\n        \"up\": true\n    };\n    function findScrollSetting(value) {\n        if (typeof value !== \"string\") {\n            return false;\n        }\n        var scroll = scrollSetting[value.toLowerCase()];\n        return scroll ? value.toLowerCase() : false;\n    }\n    function isValidPercentValue(value) {\n        return typeof value === \"number\" && value >= 0 && value <= 100;\n    }\n\n    // VTTRegion shim http://dev.w3.org/html5/webvtt/#vttregion-interface\n    function VTTRegion() {\n        var _width = 100;\n        var _lines = 3;\n        var _regionAnchorX = 0;\n        var _regionAnchorY = 100;\n        var _viewportAnchorX = 0;\n        var _viewportAnchorY = 100;\n        var _scroll = \"\";\n        Object.defineProperties(this, {\n            \"width\": {\n                enumerable: true,\n                get: function () {\n                    return _width;\n                },\n                set: function (value) {\n                    if (!isValidPercentValue(value)) {\n                        throw new Error(\"Width must be between 0 and 100.\");\n                    }\n                    _width = value;\n                }\n            },\n            \"lines\": {\n                enumerable: true,\n                get: function () {\n                    return _lines;\n                },\n                set: function (value) {\n                    if (typeof value !== \"number\") {\n                        throw new TypeError(\"Lines must be set to a number.\");\n                    }\n                    _lines = value;\n                }\n            },\n            \"regionAnchorY\": {\n                enumerable: true,\n                get: function () {\n                    return _regionAnchorY;\n                },\n                set: function (value) {\n                    if (!isValidPercentValue(value)) {\n                        throw new Error(\"RegionAnchorX must be between 0 and 100.\");\n                    }\n                    _regionAnchorY = value;\n                }\n            },\n            \"regionAnchorX\": {\n                enumerable: true,\n                get: function () {\n                    return _regionAnchorX;\n                },\n                set: function (value) {\n                    if (!isValidPercentValue(value)) {\n                        throw new Error(\"RegionAnchorY must be between 0 and 100.\");\n                    }\n                    _regionAnchorX = value;\n                }\n            },\n            \"viewportAnchorY\": {\n                enumerable: true,\n                get: function () {\n                    return _viewportAnchorY;\n                },\n                set: function (value) {\n                    if (!isValidPercentValue(value)) {\n                        throw new Error(\"ViewportAnchorY must be between 0 and 100.\");\n                    }\n                    _viewportAnchorY = value;\n                }\n            },\n            \"viewportAnchorX\": {\n                enumerable: true,\n                get: function () {\n                    return _viewportAnchorX;\n                },\n                set: function (value) {\n                    if (!isValidPercentValue(value)) {\n                        throw new Error(\"ViewportAnchorX must be between 0 and 100.\");\n                    }\n                    _viewportAnchorX = value;\n                }\n            },\n            \"scroll\": {\n                enumerable: true,\n                get: function () {\n                    return _scroll;\n                },\n                set: function (value) {\n                    var setting = findScrollSetting(value);\n                    // Have to check for false as an empty string is a legal value.\n                    if (setting === false) {\n                        console.warn(\"Scroll: an invalid or illegal string was specified.\");\n                    } else {\n                        _scroll = setting;\n                    }\n                }\n            }\n        });\n    }\n    var vttregion = VTTRegion;\n\n    var browserIndex = createCommonjsModule(function (module) {\n        /**\n         * Copyright 2013 vtt.js Contributors\n         *\n         * Licensed under the Apache License, Version 2.0 (the \"License\");\n         * you may not use this file except in compliance with the License.\n         * You may obtain a copy of the License at\n         *\n         *   http://www.apache.org/licenses/LICENSE-2.0\n         *\n         * Unless required by applicable law or agreed to in writing, software\n         * distributed under the License is distributed on an \"AS IS\" BASIS,\n         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n         * See the License for the specific language governing permissions and\n         * limitations under the License.\n         */\n\n            // Default exports for Node. Export the extended versions of VTTCue and\n            // VTTRegion in Node since we likely want the capability to convert back and\n            // forth between JSON. If we don't then it's not that big of a deal since we're\n            // off browser.\n\n        var vttjs = module.exports = {\n                WebVTT: vtt,\n                VTTCue: vttcue,\n                VTTRegion: vttregion\n            };\n        window_1.vttjs = vttjs;\n        window_1.WebVTT = vttjs.WebVTT;\n        var cueShim = vttjs.VTTCue;\n        var regionShim = vttjs.VTTRegion;\n        var nativeVTTCue = window_1.VTTCue;\n        var nativeVTTRegion = window_1.VTTRegion;\n        vttjs.shim = function () {\n            window_1.VTTCue = cueShim;\n            window_1.VTTRegion = regionShim;\n        };\n        vttjs.restore = function () {\n            window_1.VTTCue = nativeVTTCue;\n            window_1.VTTRegion = nativeVTTRegion;\n        };\n        if (!window_1.VTTCue) {\n            vttjs.shim();\n        }\n    });\n    browserIndex.WebVTT;\n    browserIndex.VTTCue;\n    browserIndex.VTTRegion;\n\n    /**\n     * @file tech.js\n     */\n\n    /**\n     * An Object containing a structure like: `{src: 'url', type: 'mimetype'}` or string\n     * that just contains the src url alone.\n     * * `var SourceObject = {src: 'http://ex.com/video.mp4', type: 'video/mp4'};`\n     * `var SourceString = 'http://example.com/some-video.mp4';`\n     *\n     * @typedef {Object|string} Tech~SourceObject\n     *\n     * @property {string} src\n     *           The url to the source\n     *\n     * @property {string} type\n     *           The mime type of the source\n     */\n\n    /**\n     * A function used by {@link Tech} to create a new {@link TextTrack}.\n     *\n     * @private\n     *\n     * @param {Tech} self\n     *        An instance of the Tech class.\n     *\n     * @param {string} kind\n     *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)\n     *\n     * @param {string} [label]\n     *        Label to identify the text track\n     *\n     * @param {string} [language]\n     *        Two letter language abbreviation\n     *\n     * @param {Object} [options={}]\n     *        An object with additional text track options\n     *\n     * @return {TextTrack}\n     *          The text track that was created.\n     */\n    function createTrackHelper(self, kind, label, language, options = {}) {\n        const tracks = self.textTracks();\n        options.kind = kind;\n        if (label) {\n            options.label = label;\n        }\n        if (language) {\n            options.language = language;\n        }\n        options.tech = self;\n        const track = new ALL.text.TrackClass(options);\n        tracks.addTrack(track);\n        return track;\n    }\n\n    /**\n     * This is the base class for media playback technology controllers, such as\n     * {@link HTML5}\n     *\n     * @extends Component\n     */\n    class Tech extends Component$1 {\n        /**\n         * Create an instance of this Tech.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {Function} [ready]\n         *        Callback function to call when the `HTML5` Tech is ready.\n         */\n        constructor(options = {}, ready = function () {}) {\n            // we don't want the tech to report user activity automatically.\n            // This is done manually in addControlsListeners\n            options.reportTouchActivity = false;\n            super(null, options, ready);\n            this.onDurationChange_ = e => this.onDurationChange(e);\n            this.trackProgress_ = e => this.trackProgress(e);\n            this.trackCurrentTime_ = e => this.trackCurrentTime(e);\n            this.stopTrackingCurrentTime_ = e => this.stopTrackingCurrentTime(e);\n            this.disposeSourceHandler_ = e => this.disposeSourceHandler(e);\n            this.queuedHanders_ = new Set();\n\n            // keep track of whether the current source has played at all to\n            // implement a very limited played()\n            this.hasStarted_ = false;\n            this.on('playing', function () {\n                this.hasStarted_ = true;\n            });\n            this.on('loadstart', function () {\n                this.hasStarted_ = false;\n            });\n            ALL.names.forEach(name => {\n                const props = ALL[name];\n                if (options && options[props.getterName]) {\n                    this[props.privateName] = options[props.getterName];\n                }\n            });\n\n            // Manually track progress in cases where the browser/tech doesn't report it.\n            if (!this.featuresProgressEvents) {\n                this.manualProgressOn();\n            }\n\n            // Manually track timeupdates in cases where the browser/tech doesn't report it.\n            if (!this.featuresTimeupdateEvents) {\n                this.manualTimeUpdatesOn();\n            }\n            ['Text', 'Audio', 'Video'].forEach(track => {\n                if (options[`native${track}Tracks`] === false) {\n                    this[`featuresNative${track}Tracks`] = false;\n                }\n            });\n            if (options.nativeCaptions === false || options.nativeTextTracks === false) {\n                this.featuresNativeTextTracks = false;\n            } else if (options.nativeCaptions === true || options.nativeTextTracks === true) {\n                this.featuresNativeTextTracks = true;\n            }\n            if (!this.featuresNativeTextTracks) {\n                this.emulateTextTracks();\n            }\n            this.preloadTextTracks = options.preloadTextTracks !== false;\n            this.autoRemoteTextTracks_ = new ALL.text.ListClass();\n            this.initTrackListeners();\n\n            // Turn on component tap events only if not using native controls\n            if (!options.nativeControlsForTouch) {\n                this.emitTapEvents();\n            }\n            if (this.constructor) {\n                this.name_ = this.constructor.name || 'Unknown Tech';\n            }\n        }\n\n        /**\n         * A special function to trigger source set in a way that will allow player\n         * to re-trigger if the player or tech are not ready yet.\n         *\n         * @fires Tech#sourceset\n         * @param {string} src The source string at the time of the source changing.\n         */\n        triggerSourceset(src) {\n            if (!this.isReady_) {\n                // on initial ready we have to trigger source set\n                // 1ms after ready so that player can watch for it.\n                this.one('ready', () => this.setTimeout(() => this.triggerSourceset(src), 1));\n            }\n\n            /**\n             * Fired when the source is set on the tech causing the media element\n             * to reload.\n             *\n             * @see {@link Player#event:sourceset}\n             * @event Tech#sourceset\n             * @type {Event}\n             */\n            this.trigger({\n                src,\n                type: 'sourceset'\n            });\n        }\n\n        /* Fallbacks for unsupported event types\n    ================================================================================ */\n\n        /**\n         * Polyfill the `progress` event for browsers that don't support it natively.\n         *\n         * @see {@link Tech#trackProgress}\n         */\n        manualProgressOn() {\n            this.on('durationchange', this.onDurationChange_);\n            this.manualProgress = true;\n\n            // Trigger progress watching when a source begins loading\n            this.one('ready', this.trackProgress_);\n        }\n\n        /**\n         * Turn off the polyfill for `progress` events that was created in\n         * {@link Tech#manualProgressOn}\n         */\n        manualProgressOff() {\n            this.manualProgress = false;\n            this.stopTrackingProgress();\n            this.off('durationchange', this.onDurationChange_);\n        }\n\n        /**\n         * This is used to trigger a `progress` event when the buffered percent changes. It\n         * sets an interval function that will be called every 500 milliseconds to check if the\n         * buffer end percent has changed.\n         *\n         * > This function is called by {@link Tech#manualProgressOn}\n         *\n         * @param {Event} event\n         *        The `ready` event that caused this to run.\n         *\n         * @listens Tech#ready\n         * @fires Tech#progress\n         */\n        trackProgress(event) {\n            this.stopTrackingProgress();\n            this.progressInterval = this.setInterval(bind_(this, function () {\n                // Don't trigger unless buffered amount is greater than last time\n\n                const numBufferedPercent = this.bufferedPercent();\n                if (this.bufferedPercent_ !== numBufferedPercent) {\n                    /**\n                     * See {@link Player#progress}\n                     *\n                     * @event Tech#progress\n                     * @type {Event}\n                     */\n                    this.trigger('progress');\n                }\n                this.bufferedPercent_ = numBufferedPercent;\n                if (numBufferedPercent === 1) {\n                    this.stopTrackingProgress();\n                }\n            }), 500);\n        }\n\n        /**\n         * Update our internal duration on a `durationchange` event by calling\n         * {@link Tech#duration}.\n         *\n         * @param {Event} event\n         *        The `durationchange` event that caused this to run.\n         *\n         * @listens Tech#durationchange\n         */\n        onDurationChange(event) {\n            this.duration_ = this.duration();\n        }\n\n        /**\n         * Get and create a `TimeRange` object for buffering.\n         *\n         * @return { import('../utils/time').TimeRange }\n         *         The time range object that was created.\n         */\n        buffered() {\n            return createTimeRanges$1(0, 0);\n        }\n\n        /**\n         * Get the percentage of the current video that is currently buffered.\n         *\n         * @return {number}\n         *         A number from 0 to 1 that represents the decimal percentage of the\n         *         video that is buffered.\n         *\n         */\n        bufferedPercent() {\n            return bufferedPercent(this.buffered(), this.duration_);\n        }\n\n        /**\n         * Turn off the polyfill for `progress` events that was created in\n         * {@link Tech#manualProgressOn}\n         * Stop manually tracking progress events by clearing the interval that was set in\n         * {@link Tech#trackProgress}.\n         */\n        stopTrackingProgress() {\n            this.clearInterval(this.progressInterval);\n        }\n\n        /**\n         * Polyfill the `timeupdate` event for browsers that don't support it.\n         *\n         * @see {@link Tech#trackCurrentTime}\n         */\n        manualTimeUpdatesOn() {\n            this.manualTimeUpdates = true;\n            this.on('play', this.trackCurrentTime_);\n            this.on('pause', this.stopTrackingCurrentTime_);\n        }\n\n        /**\n         * Turn off the polyfill for `timeupdate` events that was created in\n         * {@link Tech#manualTimeUpdatesOn}\n         */\n        manualTimeUpdatesOff() {\n            this.manualTimeUpdates = false;\n            this.stopTrackingCurrentTime();\n            this.off('play', this.trackCurrentTime_);\n            this.off('pause', this.stopTrackingCurrentTime_);\n        }\n\n        /**\n         * Sets up an interval function to track current time and trigger `timeupdate` every\n         * 250 milliseconds.\n         *\n         * @listens Tech#play\n         * @triggers Tech#timeupdate\n         */\n        trackCurrentTime() {\n            if (this.currentTimeInterval) {\n                this.stopTrackingCurrentTime();\n            }\n            this.currentTimeInterval = this.setInterval(function () {\n                /**\n                 * Triggered at an interval of 250ms to indicated that time is passing in the video.\n                 *\n                 * @event Tech#timeupdate\n                 * @type {Event}\n                 */\n                this.trigger({\n                    type: 'timeupdate',\n                    target: this,\n                    manuallyTriggered: true\n                });\n\n                // 42 = 24 fps // 250 is what Webkit uses // FF uses 15\n            }, 250);\n        }\n\n        /**\n         * Stop the interval function created in {@link Tech#trackCurrentTime} so that the\n         * `timeupdate` event is no longer triggered.\n         *\n         * @listens {Tech#pause}\n         */\n        stopTrackingCurrentTime() {\n            this.clearInterval(this.currentTimeInterval);\n\n            // #1002 - if the video ends right before the next timeupdate would happen,\n            // the progress bar won't make it all the way to the end\n            this.trigger({\n                type: 'timeupdate',\n                target: this,\n                manuallyTriggered: true\n            });\n        }\n\n        /**\n         * Turn off all event polyfills, clear the `Tech`s {@link AudioTrackList},\n         * {@link VideoTrackList}, and {@link TextTrackList}, and dispose of this Tech.\n         *\n         * @fires Component#dispose\n         */\n        dispose() {\n            // clear out all tracks because we can't reuse them between techs\n            this.clearTracks(NORMAL.names);\n\n            // Turn off any manual progress or timeupdate tracking\n            if (this.manualProgress) {\n                this.manualProgressOff();\n            }\n            if (this.manualTimeUpdates) {\n                this.manualTimeUpdatesOff();\n            }\n            super.dispose();\n        }\n\n        /**\n         * Clear out a single `TrackList` or an array of `TrackLists` given their names.\n         *\n         * > Note: Techs without source handlers should call this between sources for `video`\n         *         & `audio` tracks. You don't want to use them between tracks!\n         *\n         * @param {string[]|string} types\n         *        TrackList names to clear, valid names are `video`, `audio`, and\n         *        `text`.\n         */\n        clearTracks(types) {\n            types = [].concat(types);\n            // clear out all tracks because we can't reuse them between techs\n            types.forEach(type => {\n                const list = this[`${type}Tracks`]() || [];\n                let i = list.length;\n                while (i--) {\n                    const track = list[i];\n                    if (type === 'text') {\n                        this.removeRemoteTextTrack(track);\n                    }\n                    list.removeTrack(track);\n                }\n            });\n        }\n\n        /**\n         * Remove any TextTracks added via addRemoteTextTrack that are\n         * flagged for automatic garbage collection\n         */\n        cleanupAutoTextTracks() {\n            const list = this.autoRemoteTextTracks_ || [];\n            let i = list.length;\n            while (i--) {\n                const track = list[i];\n                this.removeRemoteTextTrack(track);\n            }\n        }\n\n        /**\n         * Reset the tech, which will removes all sources and reset the internal readyState.\n         *\n         * @abstract\n         */\n        reset() {}\n\n        /**\n         * Get the value of `crossOrigin` from the tech.\n         *\n         * @abstract\n         *\n         * @see {Html5#crossOrigin}\n         */\n        crossOrigin() {}\n\n        /**\n         * Set the value of `crossOrigin` on the tech.\n         *\n         * @abstract\n         *\n         * @param {string} crossOrigin the crossOrigin value\n         * @see {Html5#setCrossOrigin}\n         */\n        setCrossOrigin() {}\n\n        /**\n         * Get or set an error on the Tech.\n         *\n         * @param {MediaError} [err]\n         *        Error to set on the Tech\n         *\n         * @return {MediaError|null}\n         *         The current error object on the tech, or null if there isn't one.\n         */\n        error(err) {\n            if (err !== undefined) {\n                this.error_ = new MediaError(err);\n                this.trigger('error');\n            }\n            return this.error_;\n        }\n\n        /**\n         * Returns the `TimeRange`s that have been played through for the current source.\n         *\n         * > NOTE: This implementation is incomplete. It does not track the played `TimeRange`.\n         *         It only checks whether the source has played at all or not.\n         *\n         * @return {TimeRange}\n         *         - A single time range if this video has played\n         *         - An empty set of ranges if not.\n         */\n        played() {\n            if (this.hasStarted_) {\n                return createTimeRanges$1(0, 0);\n            }\n            return createTimeRanges$1();\n        }\n\n        /**\n         * Start playback\n         *\n         * @abstract\n         *\n         * @see {Html5#play}\n         */\n        play() {}\n\n        /**\n         * Set whether we are scrubbing or not\n         *\n         * @abstract\n         * @param {boolean} _isScrubbing\n         *                  - true for we are currently scrubbing\n         *                  - false for we are no longer scrubbing\n         *\n         * @see {Html5#setScrubbing}\n         */\n        setScrubbing(_isScrubbing) {}\n\n        /**\n         * Get whether we are scrubbing or not\n         *\n         * @abstract\n         *\n         * @see {Html5#scrubbing}\n         */\n        scrubbing() {}\n\n        /**\n         * Causes a manual time update to occur if {@link Tech#manualTimeUpdatesOn} was\n         * previously called.\n         *\n         * @param {number} _seconds\n         *        Set the current time of the media to this.\n         * @fires Tech#timeupdate\n         */\n        setCurrentTime(_seconds) {\n            // improve the accuracy of manual timeupdates\n            if (this.manualTimeUpdates) {\n                /**\n                 * A manual `timeupdate` event.\n                 *\n                 * @event Tech#timeupdate\n                 * @type {Event}\n                 */\n                this.trigger({\n                    type: 'timeupdate',\n                    target: this,\n                    manuallyTriggered: true\n                });\n            }\n        }\n\n        /**\n         * Turn on listeners for {@link VideoTrackList}, {@link {AudioTrackList}, and\n         * {@link TextTrackList} events.\n         *\n         * This adds {@link EventTarget~EventListeners} for `addtrack`, and  `removetrack`.\n         *\n         * @fires Tech#audiotrackchange\n         * @fires Tech#videotrackchange\n         * @fires Tech#texttrackchange\n         */\n        initTrackListeners() {\n            /**\n             * Triggered when tracks are added or removed on the Tech {@link AudioTrackList}\n             *\n             * @event Tech#audiotrackchange\n             * @type {Event}\n             */\n\n            /**\n             * Triggered when tracks are added or removed on the Tech {@link VideoTrackList}\n             *\n             * @event Tech#videotrackchange\n             * @type {Event}\n             */\n\n            /**\n             * Triggered when tracks are added or removed on the Tech {@link TextTrackList}\n             *\n             * @event Tech#texttrackchange\n             * @type {Event}\n             */\n            NORMAL.names.forEach(name => {\n                const props = NORMAL[name];\n                const trackListChanges = () => {\n                    this.trigger(`${name}trackchange`);\n                };\n                const tracks = this[props.getterName]();\n                tracks.addEventListener('removetrack', trackListChanges);\n                tracks.addEventListener('addtrack', trackListChanges);\n                this.on('dispose', () => {\n                    tracks.removeEventListener('removetrack', trackListChanges);\n                    tracks.removeEventListener('addtrack', trackListChanges);\n                });\n            });\n        }\n\n        /**\n         * Emulate TextTracks using vtt.js if necessary\n         *\n         * @fires Tech#vttjsloaded\n         * @fires Tech#vttjserror\n         */\n        addWebVttScript_() {\n            if (window.WebVTT) {\n                return;\n            }\n\n            // Initially, Tech.el_ is a child of a dummy-div wait until the Component system\n            // signals that the Tech is ready at which point Tech.el_ is part of the DOM\n            // before inserting the WebVTT script\n            if (document.body.contains(this.el())) {\n                // load via require if available and vtt.js script location was not passed in\n                // as an option. novtt builds will turn the above require call into an empty object\n                // which will cause this if check to always fail.\n                if (!this.options_['vtt.js'] && isPlain(browserIndex) && Object.keys(browserIndex).length > 0) {\n                    this.trigger('vttjsloaded');\n                    return;\n                }\n\n                // load vtt.js via the script location option or the cdn of no location was\n                // passed in\n                const script = document.createElement('script');\n                script.src = this.options_['vtt.js'] || 'https://vjs.zencdn.net/vttjs/0.14.1/vtt.min.js';\n                script.onload = () => {\n                    /**\n                     * Fired when vtt.js is loaded.\n                     *\n                     * @event Tech#vttjsloaded\n                     * @type {Event}\n                     */\n                    this.trigger('vttjsloaded');\n                };\n                script.onerror = () => {\n                    /**\n                     * Fired when vtt.js was not loaded due to an error\n                     *\n                     * @event Tech#vttjsloaded\n                     * @type {Event}\n                     */\n                    this.trigger('vttjserror');\n                };\n                this.on('dispose', () => {\n                    script.onload = null;\n                    script.onerror = null;\n                });\n                // but have not loaded yet and we set it to true before the inject so that\n                // we don't overwrite the injected window.WebVTT if it loads right away\n                window.WebVTT = true;\n                this.el().parentNode.appendChild(script);\n            } else {\n                this.ready(this.addWebVttScript_);\n            }\n        }\n\n        /**\n         * Emulate texttracks\n         *\n         */\n        emulateTextTracks() {\n            const tracks = this.textTracks();\n            const remoteTracks = this.remoteTextTracks();\n            const handleAddTrack = e => tracks.addTrack(e.track);\n            const handleRemoveTrack = e => tracks.removeTrack(e.track);\n            remoteTracks.on('addtrack', handleAddTrack);\n            remoteTracks.on('removetrack', handleRemoveTrack);\n            this.addWebVttScript_();\n            const updateDisplay = () => this.trigger('texttrackchange');\n            const textTracksChanges = () => {\n                updateDisplay();\n                for (let i = 0; i < tracks.length; i++) {\n                    const track = tracks[i];\n                    track.removeEventListener('cuechange', updateDisplay);\n                    if (track.mode === 'showing') {\n                        track.addEventListener('cuechange', updateDisplay);\n                    }\n                }\n            };\n            textTracksChanges();\n            tracks.addEventListener('change', textTracksChanges);\n            tracks.addEventListener('addtrack', textTracksChanges);\n            tracks.addEventListener('removetrack', textTracksChanges);\n            this.on('dispose', function () {\n                remoteTracks.off('addtrack', handleAddTrack);\n                remoteTracks.off('removetrack', handleRemoveTrack);\n                tracks.removeEventListener('change', textTracksChanges);\n                tracks.removeEventListener('addtrack', textTracksChanges);\n                tracks.removeEventListener('removetrack', textTracksChanges);\n                for (let i = 0; i < tracks.length; i++) {\n                    const track = tracks[i];\n                    track.removeEventListener('cuechange', updateDisplay);\n                }\n            });\n        }\n\n        /**\n         * Create and returns a remote {@link TextTrack} object.\n         *\n         * @param {string} kind\n         *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)\n         *\n         * @param {string} [label]\n         *        Label to identify the text track\n         *\n         * @param {string} [language]\n         *        Two letter language abbreviation\n         *\n         * @return {TextTrack}\n         *         The TextTrack that gets created.\n         */\n        addTextTrack(kind, label, language) {\n            if (!kind) {\n                throw new Error('TextTrack kind is required but was not provided');\n            }\n            return createTrackHelper(this, kind, label, language);\n        }\n\n        /**\n         * Create an emulated TextTrack for use by addRemoteTextTrack\n         *\n         * This is intended to be overridden by classes that inherit from\n         * Tech in order to create native or custom TextTracks.\n         *\n         * @param {Object} options\n         *        The object should contain the options to initialize the TextTrack with.\n         *\n         * @param {string} [options.kind]\n         *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata).\n         *\n         * @param {string} [options.label].\n         *        Label to identify the text track\n         *\n         * @param {string} [options.language]\n         *        Two letter language abbreviation.\n         *\n         * @return {HTMLTrackElement}\n         *         The track element that gets created.\n         */\n        createRemoteTextTrack(options) {\n            const track = merge$2(options, {\n                tech: this\n            });\n            return new REMOTE.remoteTextEl.TrackClass(track);\n        }\n\n        /**\n         * Creates a remote text track object and returns an html track element.\n         *\n         * > Note: This can be an emulated {@link HTMLTrackElement} or a native one.\n         *\n         * @param {Object} options\n         *        See {@link Tech#createRemoteTextTrack} for more detailed properties.\n         *\n         * @param {boolean} [manualCleanup=false]\n         *        - When false: the TextTrack will be automatically removed from the video\n         *          element whenever the source changes\n         *        - When True: The TextTrack will have to be cleaned up manually\n         *\n         * @return {HTMLTrackElement}\n         *         An Html Track Element.\n         *\n         */\n        addRemoteTextTrack(options = {}, manualCleanup) {\n            const htmlTrackElement = this.createRemoteTextTrack(options);\n            if (typeof manualCleanup !== 'boolean') {\n                manualCleanup = false;\n            }\n\n            // store HTMLTrackElement and TextTrack to remote list\n            this.remoteTextTrackEls().addTrackElement_(htmlTrackElement);\n            this.remoteTextTracks().addTrack(htmlTrackElement.track);\n            if (manualCleanup === false) {\n                // create the TextTrackList if it doesn't exist\n                this.ready(() => this.autoRemoteTextTracks_.addTrack(htmlTrackElement.track));\n            }\n            return htmlTrackElement;\n        }\n\n        /**\n         * Remove a remote text track from the remote `TextTrackList`.\n         *\n         * @param {TextTrack} track\n         *        `TextTrack` to remove from the `TextTrackList`\n         */\n        removeRemoteTextTrack(track) {\n            const trackElement = this.remoteTextTrackEls().getTrackElementByTrack_(track);\n\n            // remove HTMLTrackElement and TextTrack from remote list\n            this.remoteTextTrackEls().removeTrackElement_(trackElement);\n            this.remoteTextTracks().removeTrack(track);\n            this.autoRemoteTextTracks_.removeTrack(track);\n        }\n\n        /**\n         * Gets available media playback quality metrics as specified by the W3C's Media\n         * Playback Quality API.\n         *\n         * @see [Spec]{@link https://wicg.github.io/media-playback-quality}\n         *\n         * @return {Object}\n         *         An object with supported media playback quality metrics\n         *\n         * @abstract\n         */\n        getVideoPlaybackQuality() {\n            return {};\n        }\n\n        /**\n         * Attempt to create a floating video window always on top of other windows\n         * so that users may continue consuming media while they interact with other\n         * content sites, or applications on their device.\n         *\n         * @see [Spec]{@link https://wicg.github.io/picture-in-picture}\n         *\n         * @return {Promise|undefined}\n         *         A promise with a Picture-in-Picture window if the browser supports\n         *         Promises (or one was passed in as an option). It returns undefined\n         *         otherwise.\n         *\n         * @abstract\n         */\n        requestPictureInPicture() {\n            return Promise.reject();\n        }\n\n        /**\n         * A method to check for the value of the 'disablePictureInPicture' <video> property.\n         * Defaults to true, as it should be considered disabled if the tech does not support pip\n         *\n         * @abstract\n         */\n        disablePictureInPicture() {\n            return true;\n        }\n\n        /**\n         * A method to set or unset the 'disablePictureInPicture' <video> property.\n         *\n         * @abstract\n         */\n        setDisablePictureInPicture() {}\n\n        /**\n         * A fallback implementation of requestVideoFrameCallback using requestAnimationFrame\n         *\n         * @param {function} cb\n         * @return {number} request id\n         */\n        requestVideoFrameCallback(cb) {\n            const id = newGUID();\n            if (!this.isReady_ || this.paused()) {\n                this.queuedHanders_.add(id);\n                this.one('playing', () => {\n                    if (this.queuedHanders_.has(id)) {\n                        this.queuedHanders_.delete(id);\n                        cb();\n                    }\n                });\n            } else {\n                this.requestNamedAnimationFrame(id, cb);\n            }\n            return id;\n        }\n\n        /**\n         * A fallback implementation of cancelVideoFrameCallback\n         *\n         * @param {number} id id of callback to be cancelled\n         */\n        cancelVideoFrameCallback(id) {\n            if (this.queuedHanders_.has(id)) {\n                this.queuedHanders_.delete(id);\n            } else {\n                this.cancelNamedAnimationFrame(id);\n            }\n        }\n\n        /**\n         * A method to set a poster from a `Tech`.\n         *\n         * @abstract\n         */\n        setPoster() {}\n\n        /**\n         * A method to check for the presence of the 'playsinline' <video> attribute.\n         *\n         * @abstract\n         */\n        playsinline() {}\n\n        /**\n         * A method to set or unset the 'playsinline' <video> attribute.\n         *\n         * @abstract\n         */\n        setPlaysinline() {}\n\n        /**\n         * Attempt to force override of native audio tracks.\n         *\n         * @param {boolean} override - If set to true native audio will be overridden,\n         * otherwise native audio will potentially be used.\n         *\n         * @abstract\n         */\n        overrideNativeAudioTracks(override) {}\n\n        /**\n         * Attempt to force override of native video tracks.\n         *\n         * @param {boolean} override - If set to true native video will be overridden,\n         * otherwise native video will potentially be used.\n         *\n         * @abstract\n         */\n        overrideNativeVideoTracks(override) {}\n\n        /**\n         * Check if the tech can support the given mime-type.\n         *\n         * The base tech does not support any type, but source handlers might\n         * overwrite this.\n         *\n         * @param  {string} _type\n         *         The mimetype to check for support\n         *\n         * @return {string}\n         *         'probably', 'maybe', or empty string\n         *\n         * @see [Spec]{@link https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/canPlayType}\n         *\n         * @abstract\n         */\n        canPlayType(_type) {\n            return '';\n        }\n\n        /**\n         * Check if the type is supported by this tech.\n         *\n         * The base tech does not support any type, but source handlers might\n         * overwrite this.\n         *\n         * @param {string} _type\n         *        The media type to check\n         * @return {string} Returns the native video element's response\n         */\n        static canPlayType(_type) {\n            return '';\n        }\n\n        /**\n         * Check if the tech can support the given source\n         *\n         * @param {Object} srcObj\n         *        The source object\n         * @param {Object} options\n         *        The options passed to the tech\n         * @return {string} 'probably', 'maybe', or '' (empty string)\n         */\n        static canPlaySource(srcObj, options) {\n            return Tech.canPlayType(srcObj.type);\n        }\n\n        /*\n     * Return whether the argument is a Tech or not.\n     * Can be passed either a Class like `Html5` or a instance like `player.tech_`\n     *\n     * @param {Object} component\n     *        The item to check\n     *\n     * @return {boolean}\n     *         Whether it is a tech or not\n     *         - True if it is a tech\n     *         - False if it is not\n     */\n        static isTech(component) {\n            return component.prototype instanceof Tech || component instanceof Tech || component === Tech;\n        }\n\n        /**\n         * Registers a `Tech` into a shared list for videojs.\n         *\n         * @param {string} name\n         *        Name of the `Tech` to register.\n         *\n         * @param {Object} tech\n         *        The `Tech` class to register.\n         */\n        static registerTech(name, tech) {\n            if (!Tech.techs_) {\n                Tech.techs_ = {};\n            }\n            if (!Tech.isTech(tech)) {\n                throw new Error(`Tech ${name} must be a Tech`);\n            }\n            if (!Tech.canPlayType) {\n                throw new Error('Techs must have a static canPlayType method on them');\n            }\n            if (!Tech.canPlaySource) {\n                throw new Error('Techs must have a static canPlaySource method on them');\n            }\n            name = toTitleCase$1(name);\n            Tech.techs_[name] = tech;\n            Tech.techs_[toLowerCase(name)] = tech;\n            if (name !== 'Tech') {\n                // camel case the techName for use in techOrder\n                Tech.defaultTechOrder_.push(name);\n            }\n            return tech;\n        }\n\n        /**\n         * Get a `Tech` from the shared list by name.\n         *\n         * @param {string} name\n         *        `camelCase` or `TitleCase` name of the Tech to get\n         *\n         * @return {Tech|undefined}\n         *         The `Tech` or undefined if there was no tech with the name requested.\n         */\n        static getTech(name) {\n            if (!name) {\n                return;\n            }\n            if (Tech.techs_ && Tech.techs_[name]) {\n                return Tech.techs_[name];\n            }\n            name = toTitleCase$1(name);\n            if (window && window.videojs && window.videojs[name]) {\n                log$1.warn(`The ${name} tech was added to the videojs object when it should be registered using videojs.registerTech(name, tech)`);\n                return window.videojs[name];\n            }\n        }\n    }\n\n    /**\n     * Get the {@link VideoTrackList}\n     *\n     * @returns {VideoTrackList}\n     * @method Tech.prototype.videoTracks\n     */\n\n    /**\n     * Get the {@link AudioTrackList}\n     *\n     * @returns {AudioTrackList}\n     * @method Tech.prototype.audioTracks\n     */\n\n    /**\n     * Get the {@link TextTrackList}\n     *\n     * @returns {TextTrackList}\n     * @method Tech.prototype.textTracks\n     */\n\n    /**\n     * Get the remote element {@link TextTrackList}\n     *\n     * @returns {TextTrackList}\n     * @method Tech.prototype.remoteTextTracks\n     */\n\n    /**\n     * Get the remote element {@link HtmlTrackElementList}\n     *\n     * @returns {HtmlTrackElementList}\n     * @method Tech.prototype.remoteTextTrackEls\n     */\n\n    ALL.names.forEach(function (name) {\n        const props = ALL[name];\n        Tech.prototype[props.getterName] = function () {\n            this[props.privateName] = this[props.privateName] || new props.ListClass();\n            return this[props.privateName];\n        };\n    });\n\n    /**\n     * List of associated text tracks\n     *\n     * @type {TextTrackList}\n     * @private\n     * @property Tech#textTracks_\n     */\n\n    /**\n     * List of associated audio tracks.\n     *\n     * @type {AudioTrackList}\n     * @private\n     * @property Tech#audioTracks_\n     */\n\n    /**\n     * List of associated video tracks.\n     *\n     * @type {VideoTrackList}\n     * @private\n     * @property Tech#videoTracks_\n     */\n\n    /**\n     * Boolean indicating whether the `Tech` supports volume control.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Tech.prototype.featuresVolumeControl = true;\n\n    /**\n     * Boolean indicating whether the `Tech` supports muting volume.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Tech.prototype.featuresMuteControl = true;\n\n    /**\n     * Boolean indicating whether the `Tech` supports fullscreen resize control.\n     * Resizing plugins using request fullscreen reloads the plugin\n     *\n     * @type {boolean}\n     * @default\n     */\n    Tech.prototype.featuresFullscreenResize = false;\n\n    /**\n     * Boolean indicating whether the `Tech` supports changing the speed at which the video\n     * plays. Examples:\n     *   - Set player to play 2x (twice) as fast\n     *   - Set player to play 0.5x (half) as fast\n     *\n     * @type {boolean}\n     * @default\n     */\n    Tech.prototype.featuresPlaybackRate = false;\n\n    /**\n     * Boolean indicating whether the `Tech` supports the `progress` event.\n     * This will be used to determine if {@link Tech#manualProgressOn} should be called.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Tech.prototype.featuresProgressEvents = false;\n\n    /**\n     * Boolean indicating whether the `Tech` supports the `sourceset` event.\n     *\n     * A tech should set this to `true` and then use {@link Tech#triggerSourceset}\n     * to trigger a {@link Tech#event:sourceset} at the earliest time after getting\n     * a new source.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Tech.prototype.featuresSourceset = false;\n\n    /**\n     * Boolean indicating whether the `Tech` supports the `timeupdate` event.\n     * This will be used to determine if {@link Tech#manualTimeUpdates} should be called.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Tech.prototype.featuresTimeupdateEvents = false;\n\n    /**\n     * Boolean indicating whether the `Tech` supports the native `TextTrack`s.\n     * This will help us integrate with native `TextTrack`s if the browser supports them.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Tech.prototype.featuresNativeTextTracks = false;\n\n    /**\n     * Boolean indicating whether the `Tech` supports `requestVideoFrameCallback`.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Tech.prototype.featuresVideoFrameCallback = false;\n\n    /**\n     * A functional mixin for techs that want to use the Source Handler pattern.\n     * Source handlers are scripts for handling specific formats.\n     * The source handler pattern is used for adaptive formats (HLS, DASH) that\n     * manually load video data and feed it into a Source Buffer (Media Source Extensions)\n     * Example: `Tech.withSourceHandlers.call(MyTech);`\n     *\n     * @param {Tech} _Tech\n     *        The tech to add source handler functions to.\n     *\n     * @mixes Tech~SourceHandlerAdditions\n     */\n    Tech.withSourceHandlers = function (_Tech) {\n        /**\n         * Register a source handler\n         *\n         * @param {Function} handler\n         *        The source handler class\n         *\n         * @param {number} [index]\n         *        Register it at the following index\n         */\n        _Tech.registerSourceHandler = function (handler, index) {\n            let handlers = _Tech.sourceHandlers;\n            if (!handlers) {\n                handlers = _Tech.sourceHandlers = [];\n            }\n            if (index === undefined) {\n                // add to the end of the list\n                index = handlers.length;\n            }\n            handlers.splice(index, 0, handler);\n        };\n\n        /**\n         * Check if the tech can support the given type. Also checks the\n         * Techs sourceHandlers.\n         *\n         * @param {string} type\n         *         The mimetype to check.\n         *\n         * @return {string}\n         *         'probably', 'maybe', or '' (empty string)\n         */\n        _Tech.canPlayType = function (type) {\n            const handlers = _Tech.sourceHandlers || [];\n            let can;\n            for (let i = 0; i < handlers.length; i++) {\n                can = handlers[i].canPlayType(type);\n                if (can) {\n                    return can;\n                }\n            }\n            return '';\n        };\n\n        /**\n         * Returns the first source handler that supports the source.\n         *\n         * TODO: Answer question: should 'probably' be prioritized over 'maybe'\n         *\n         * @param {Tech~SourceObject} source\n         *        The source object\n         *\n         * @param {Object} options\n         *        The options passed to the tech\n         *\n         * @return {SourceHandler|null}\n         *          The first source handler that supports the source or null if\n         *          no SourceHandler supports the source\n         */\n        _Tech.selectSourceHandler = function (source, options) {\n            const handlers = _Tech.sourceHandlers || [];\n            let can;\n            for (let i = 0; i < handlers.length; i++) {\n                can = handlers[i].canHandleSource(source, options);\n                if (can) {\n                    return handlers[i];\n                }\n            }\n            return null;\n        };\n\n        /**\n         * Check if the tech can support the given source.\n         *\n         * @param {Tech~SourceObject} srcObj\n         *        The source object\n         *\n         * @param {Object} options\n         *        The options passed to the tech\n         *\n         * @return {string}\n         *         'probably', 'maybe', or '' (empty string)\n         */\n        _Tech.canPlaySource = function (srcObj, options) {\n            const sh = _Tech.selectSourceHandler(srcObj, options);\n            if (sh) {\n                return sh.canHandleSource(srcObj, options);\n            }\n            return '';\n        };\n\n        /**\n         * When using a source handler, prefer its implementation of\n         * any function normally provided by the tech.\n         */\n        const deferrable = ['seekable', 'seeking', 'duration'];\n\n        /**\n         * A wrapper around {@link Tech#seekable} that will call a `SourceHandler`s seekable\n         * function if it exists, with a fallback to the Techs seekable function.\n         *\n         * @method _Tech.seekable\n         */\n\n        /**\n         * A wrapper around {@link Tech#duration} that will call a `SourceHandler`s duration\n         * function if it exists, otherwise it will fallback to the techs duration function.\n         *\n         * @method _Tech.duration\n         */\n\n        deferrable.forEach(function (fnName) {\n            const originalFn = this[fnName];\n            if (typeof originalFn !== 'function') {\n                return;\n            }\n            this[fnName] = function () {\n                if (this.sourceHandler_ && this.sourceHandler_[fnName]) {\n                    return this.sourceHandler_[fnName].apply(this.sourceHandler_, arguments);\n                }\n                return originalFn.apply(this, arguments);\n            };\n        }, _Tech.prototype);\n\n        /**\n         * Create a function for setting the source using a source object\n         * and source handlers.\n         * Should never be called unless a source handler was found.\n         *\n         * @param {Tech~SourceObject} source\n         *        A source object with src and type keys\n         */\n        _Tech.prototype.setSource = function (source) {\n            let sh = _Tech.selectSourceHandler(source, this.options_);\n            if (!sh) {\n                // Fall back to a native source handler when unsupported sources are\n                // deliberately set\n                if (_Tech.nativeSourceHandler) {\n                    sh = _Tech.nativeSourceHandler;\n                } else {\n                    log$1.error('No source handler found for the current source.');\n                }\n            }\n\n            // Dispose any existing source handler\n            this.disposeSourceHandler();\n            this.off('dispose', this.disposeSourceHandler_);\n            if (sh !== _Tech.nativeSourceHandler) {\n                this.currentSource_ = source;\n            }\n            this.sourceHandler_ = sh.handleSource(source, this, this.options_);\n            this.one('dispose', this.disposeSourceHandler_);\n        };\n\n        /**\n         * Clean up any existing SourceHandlers and listeners when the Tech is disposed.\n         *\n         * @listens Tech#dispose\n         */\n        _Tech.prototype.disposeSourceHandler = function () {\n            // if we have a source and get another one\n            // then we are loading something new\n            // than clear all of our current tracks\n            if (this.currentSource_) {\n                this.clearTracks(['audio', 'video']);\n                this.currentSource_ = null;\n            }\n\n            // always clean up auto-text tracks\n            this.cleanupAutoTextTracks();\n            if (this.sourceHandler_) {\n                if (this.sourceHandler_.dispose) {\n                    this.sourceHandler_.dispose();\n                }\n                this.sourceHandler_ = null;\n            }\n        };\n    };\n\n    // The base Tech class needs to be registered as a Component. It is the only\n    // Tech that can be registered as a Component.\n    Component$1.registerComponent('Tech', Tech);\n    Tech.registerTech('Tech', Tech);\n\n    /**\n     * A list of techs that should be added to techOrder on Players\n     *\n     * @private\n     */\n    Tech.defaultTechOrder_ = [];\n\n    /**\n     * @file middleware.js\n     * @module middleware\n     */\n    const middlewares = {};\n    const middlewareInstances = {};\n    const TERMINATOR = {};\n\n    /**\n     * A middleware object is a plain JavaScript object that has methods that\n     * match the {@link Tech} methods found in the lists of allowed\n     * {@link module:middleware.allowedGetters|getters},\n     * {@link module:middleware.allowedSetters|setters}, and\n     * {@link module:middleware.allowedMediators|mediators}.\n     *\n     * @typedef {Object} MiddlewareObject\n     */\n\n    /**\n     * A middleware factory function that should return a\n     * {@link module:middleware~MiddlewareObject|MiddlewareObject}.\n     *\n     * This factory will be called for each player when needed, with the player\n     * passed in as an argument.\n     *\n     * @callback MiddlewareFactory\n     * @param { import('../player').default } player\n     *        A Video.js player.\n     */\n\n    /**\n     * Define a middleware that the player should use by way of a factory function\n     * that returns a middleware object.\n     *\n     * @param  {string} type\n     *         The MIME type to match or `\"*\"` for all MIME types.\n     *\n     * @param  {MiddlewareFactory} middleware\n     *         A middleware factory function that will be executed for\n     *         matching types.\n     */\n    function use(type, middleware) {\n        middlewares[type] = middlewares[type] || [];\n        middlewares[type].push(middleware);\n    }\n\n    /**\n     * Asynchronously sets a source using middleware by recursing through any\n     * matching middlewares and calling `setSource` on each, passing along the\n     * previous returned value each time.\n     *\n     * @param  { import('../player').default } player\n     *         A {@link Player} instance.\n     *\n     * @param  {Tech~SourceObject} src\n     *         A source object.\n     *\n     * @param  {Function}\n     *         The next middleware to run.\n     */\n    function setSource(player, src, next) {\n        player.setTimeout(() => setSourceHelper(src, middlewares[src.type], next, player), 1);\n    }\n\n    /**\n     * When the tech is set, passes the tech to each middleware's `setTech` method.\n     *\n     * @param {Object[]} middleware\n     *        An array of middleware instances.\n     *\n     * @param { import('../tech/tech').default } tech\n     *        A Video.js tech.\n     */\n    function setTech(middleware, tech) {\n        middleware.forEach(mw => mw.setTech && mw.setTech(tech));\n    }\n\n    /**\n     * Calls a getter on the tech first, through each middleware\n     * from right to left to the player.\n     *\n     * @param  {Object[]} middleware\n     *         An array of middleware instances.\n     *\n     * @param  { import('../tech/tech').default } tech\n     *         The current tech.\n     *\n     * @param  {string} method\n     *         A method name.\n     *\n     * @return {*}\n     *         The final value from the tech after middleware has intercepted it.\n     */\n    function get(middleware, tech, method) {\n        return middleware.reduceRight(middlewareIterator(method), tech[method]());\n    }\n\n    /**\n     * Takes the argument given to the player and calls the setter method on each\n     * middleware from left to right to the tech.\n     *\n     * @param  {Object[]} middleware\n     *         An array of middleware instances.\n     *\n     * @param  { import('../tech/tech').default } tech\n     *         The current tech.\n     *\n     * @param  {string} method\n     *         A method name.\n     *\n     * @param  {*} arg\n     *         The value to set on the tech.\n     *\n     * @return {*}\n     *         The return value of the `method` of the `tech`.\n     */\n    function set(middleware, tech, method, arg) {\n        return tech[method](middleware.reduce(middlewareIterator(method), arg));\n    }\n\n    /**\n     * Takes the argument given to the player and calls the `call` version of the\n     * method on each middleware from left to right.\n     *\n     * Then, call the passed in method on the tech and return the result unchanged\n     * back to the player, through middleware, this time from right to left.\n     *\n     * @param  {Object[]} middleware\n     *         An array of middleware instances.\n     *\n     * @param  { import('../tech/tech').default } tech\n     *         The current tech.\n     *\n     * @param  {string} method\n     *         A method name.\n     *\n     * @param  {*} arg\n     *         The value to set on the tech.\n     *\n     * @return {*}\n     *         The return value of the `method` of the `tech`, regardless of the\n     *         return values of middlewares.\n     */\n    function mediate(middleware, tech, method, arg = null) {\n        const callMethod = 'call' + toTitleCase$1(method);\n        const middlewareValue = middleware.reduce(middlewareIterator(callMethod), arg);\n        const terminated = middlewareValue === TERMINATOR;\n        // deprecated. The `null` return value should instead return TERMINATOR to\n        // prevent confusion if a techs method actually returns null.\n        const returnValue = terminated ? null : tech[method](middlewareValue);\n        executeRight(middleware, method, returnValue, terminated);\n        return returnValue;\n    }\n\n    /**\n     * Enumeration of allowed getters where the keys are method names.\n     *\n     * @type {Object}\n     */\n    const allowedGetters = {\n        buffered: 1,\n        currentTime: 1,\n        duration: 1,\n        muted: 1,\n        played: 1,\n        paused: 1,\n        seekable: 1,\n        volume: 1,\n        ended: 1\n    };\n\n    /**\n     * Enumeration of allowed setters where the keys are method names.\n     *\n     * @type {Object}\n     */\n    const allowedSetters = {\n        setCurrentTime: 1,\n        setMuted: 1,\n        setVolume: 1\n    };\n\n    /**\n     * Enumeration of allowed mediators where the keys are method names.\n     *\n     * @type {Object}\n     */\n    const allowedMediators = {\n        play: 1,\n        pause: 1\n    };\n    function middlewareIterator(method) {\n        return (value, mw) => {\n            // if the previous middleware terminated, pass along the termination\n            if (value === TERMINATOR) {\n                return TERMINATOR;\n            }\n            if (mw[method]) {\n                return mw[method](value);\n            }\n            return value;\n        };\n    }\n    function executeRight(mws, method, value, terminated) {\n        for (let i = mws.length - 1; i >= 0; i--) {\n            const mw = mws[i];\n            if (mw[method]) {\n                mw[method](terminated, value);\n            }\n        }\n    }\n\n    /**\n     * Clear the middleware cache for a player.\n     *\n     * @param  { import('../player').default } player\n     *         A {@link Player} instance.\n     */\n    function clearCacheForPlayer(player) {\n        middlewareInstances[player.id()] = null;\n    }\n\n    /**\n     * {\n     *  [playerId]: [[mwFactory, mwInstance], ...]\n     * }\n     *\n     * @private\n     */\n    function getOrCreateFactory(player, mwFactory) {\n        const mws = middlewareInstances[player.id()];\n        let mw = null;\n        if (mws === undefined || mws === null) {\n            mw = mwFactory(player);\n            middlewareInstances[player.id()] = [[mwFactory, mw]];\n            return mw;\n        }\n        for (let i = 0; i < mws.length; i++) {\n            const [mwf, mwi] = mws[i];\n            if (mwf !== mwFactory) {\n                continue;\n            }\n            mw = mwi;\n        }\n        if (mw === null) {\n            mw = mwFactory(player);\n            mws.push([mwFactory, mw]);\n        }\n        return mw;\n    }\n    function setSourceHelper(src = {}, middleware = [], next, player, acc = [], lastRun = false) {\n        const [mwFactory, ...mwrest] = middleware;\n\n        // if mwFactory is a string, then we're at a fork in the road\n        if (typeof mwFactory === 'string') {\n            setSourceHelper(src, middlewares[mwFactory], next, player, acc, lastRun);\n\n            // if we have an mwFactory, call it with the player to get the mw,\n            // then call the mw's setSource method\n        } else if (mwFactory) {\n            const mw = getOrCreateFactory(player, mwFactory);\n\n            // if setSource isn't present, implicitly select this middleware\n            if (!mw.setSource) {\n                acc.push(mw);\n                return setSourceHelper(src, mwrest, next, player, acc, lastRun);\n            }\n            mw.setSource(Object.assign({}, src), function (err, _src) {\n                // something happened, try the next middleware on the current level\n                // make sure to use the old src\n                if (err) {\n                    return setSourceHelper(src, mwrest, next, player, acc, lastRun);\n                }\n\n                // we've succeeded, now we need to go deeper\n                acc.push(mw);\n\n                // if it's the same type, continue down the current chain\n                // otherwise, we want to go down the new chain\n                setSourceHelper(_src, src.type === _src.type ? mwrest : middlewares[_src.type], next, player, acc, lastRun);\n            });\n        } else if (mwrest.length) {\n            setSourceHelper(src, mwrest, next, player, acc, lastRun);\n        } else if (lastRun) {\n            next(src, acc);\n        } else {\n            setSourceHelper(src, middlewares['*'], next, player, acc, true);\n        }\n    }\n\n    /**\n     * Mimetypes\n     *\n     * @see https://www.iana.org/assignments/media-types/media-types.xhtml\n     * @typedef Mimetypes~Kind\n     * @enum\n     */\n    const MimetypesKind = {\n        opus: 'video/ogg',\n        ogv: 'video/ogg',\n        mp4: 'video/mp4',\n        mov: 'video/mp4',\n        m4v: 'video/mp4',\n        mkv: 'video/x-matroska',\n        m4a: 'audio/mp4',\n        mp3: 'audio/mpeg',\n        aac: 'audio/aac',\n        caf: 'audio/x-caf',\n        flac: 'audio/flac',\n        oga: 'audio/ogg',\n        wav: 'audio/wav',\n        m3u8: 'application/x-mpegURL',\n        mpd: 'application/dash+xml',\n        jpg: 'image/jpeg',\n        jpeg: 'image/jpeg',\n        gif: 'image/gif',\n        png: 'image/png',\n        svg: 'image/svg+xml',\n        webp: 'image/webp'\n    };\n\n    /**\n     * Get the mimetype of a given src url if possible\n     *\n     * @param {string} src\n     *        The url to the src\n     *\n     * @return {string}\n     *         return the mimetype if it was known or empty string otherwise\n     */\n    const getMimetype = function (src = '') {\n        const ext = getFileExtension(src);\n        const mimetype = MimetypesKind[ext.toLowerCase()];\n        return mimetype || '';\n    };\n\n    /**\n     * Find the mime type of a given source string if possible. Uses the player\n     * source cache.\n     *\n     * @param { import('../player').default } player\n     *        The player object\n     *\n     * @param {string} src\n     *        The source string\n     *\n     * @return {string}\n     *         The type that was found\n     */\n    const findMimetype = (player, src) => {\n        if (!src) {\n            return '';\n        }\n\n        // 1. check for the type in the `source` cache\n        if (player.cache_.source.src === src && player.cache_.source.type) {\n            return player.cache_.source.type;\n        }\n\n        // 2. see if we have this source in our `currentSources` cache\n        const matchingSources = player.cache_.sources.filter(s => s.src === src);\n        if (matchingSources.length) {\n            return matchingSources[0].type;\n        }\n\n        // 3. look for the src url in source elements and use the type there\n        const sources = player.$$('source');\n        for (let i = 0; i < sources.length; i++) {\n            const s = sources[i];\n            if (s.type && s.src && s.src === src) {\n                return s.type;\n            }\n        }\n\n        // 4. finally fallback to our list of mime types based on src url extension\n        return getMimetype(src);\n    };\n\n    /**\n     * @module filter-source\n     */\n\n    /**\n     * Filter out single bad source objects or multiple source objects in an\n     * array. Also flattens nested source object arrays into a 1 dimensional\n     * array of source objects.\n     *\n     * @param {Tech~SourceObject|Tech~SourceObject[]} src\n     *        The src object to filter\n     *\n     * @return {Tech~SourceObject[]}\n     *         An array of sourceobjects containing only valid sources\n     *\n     * @private\n     */\n    const filterSource = function (src) {\n        // traverse array\n        if (Array.isArray(src)) {\n            let newsrc = [];\n            src.forEach(function (srcobj) {\n                srcobj = filterSource(srcobj);\n                if (Array.isArray(srcobj)) {\n                    newsrc = newsrc.concat(srcobj);\n                } else if (isObject$1(srcobj)) {\n                    newsrc.push(srcobj);\n                }\n            });\n            src = newsrc;\n        } else if (typeof src === 'string' && src.trim()) {\n            // convert string into object\n            src = [fixSource({\n                src\n            })];\n        } else if (isObject$1(src) && typeof src.src === 'string' && src.src && src.src.trim()) {\n            // src is already valid\n            src = [fixSource(src)];\n        } else {\n            // invalid source, turn it into an empty array\n            src = [];\n        }\n        return src;\n    };\n\n    /**\n     * Checks src mimetype, adding it when possible\n     *\n     * @param {Tech~SourceObject} src\n     *        The src object to check\n     * @return {Tech~SourceObject}\n     *        src Object with known type\n     */\n    function fixSource(src) {\n        if (!src.type) {\n            const mimetype = getMimetype(src.src);\n            if (mimetype) {\n                src.type = mimetype;\n            }\n        }\n        return src;\n    }\n\n    /**\n     * @file loader.js\n     */\n\n    /**\n     * The `MediaLoader` is the `Component` that decides which playback technology to load\n     * when a player is initialized.\n     *\n     * @extends Component\n     */\n    class MediaLoader extends Component$1 {\n        /**\n         * Create an instance of this class.\n         *\n         * @param { import('../player').default } player\n         *        The `Player` that this class should attach to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {Function} [ready]\n         *        The function that is run when this component is ready.\n         */\n        constructor(player, options, ready) {\n            // MediaLoader has no element\n            const options_ = merge$2({\n                createEl: false\n            }, options);\n            super(player, options_, ready);\n\n            // If there are no sources when the player is initialized,\n            // load the first supported playback technology.\n\n            if (!options.playerOptions.sources || options.playerOptions.sources.length === 0) {\n                for (let i = 0, j = options.playerOptions.techOrder; i < j.length; i++) {\n                    const techName = toTitleCase$1(j[i]);\n                    let tech = Tech.getTech(techName);\n\n                    // Support old behavior of techs being registered as components.\n                    // Remove once that deprecated behavior is removed.\n                    if (!techName) {\n                        tech = Component$1.getComponent(techName);\n                    }\n\n                    // Check if the browser supports this technology\n                    if (tech && tech.isSupported()) {\n                        player.loadTech_(techName);\n                        break;\n                    }\n                }\n            } else {\n                // Loop through playback technologies (e.g. HTML5) and check for support.\n                // Then load the best source.\n                // A few assumptions here:\n                //   All playback technologies respect preload false.\n                player.src(options.playerOptions.sources);\n            }\n        }\n    }\n    Component$1.registerComponent('MediaLoader', MediaLoader);\n\n    /**\n     * @file clickable-component.js\n     */\n\n    /**\n     * Component which is clickable or keyboard actionable, but is not a\n     * native HTML button.\n     *\n     * @extends Component\n     */\n    class ClickableComponent extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param  { import('./player').default } player\n         *         The `Player` that this class should be attached to.\n         *\n         * @param  {Object} [options]\n         *         The key/value store of component options.\n         *\n         * @param  {function} [options.clickHandler]\n         *         The function to call when the button is clicked / activated\n         *\n         * @param  {string} [options.controlText]\n         *         The text to set on the button\n         *\n         * @param  {string} [options.className]\n         *         A class or space separated list of classes to add the component\n         *\n         */\n        constructor(player, options) {\n            super(player, options);\n            if (this.options_.controlText) {\n                this.controlText(this.options_.controlText);\n            }\n            this.handleMouseOver_ = e => this.handleMouseOver(e);\n            this.handleMouseOut_ = e => this.handleMouseOut(e);\n            this.handleClick_ = e => this.handleClick(e);\n            this.handleKeyDown_ = e => this.handleKeyDown(e);\n            this.emitTapEvents();\n            this.enable();\n        }\n\n        /**\n         * Create the `ClickableComponent`s DOM element.\n         *\n         * @param {string} [tag=div]\n         *        The element's node type.\n         *\n         * @param {Object} [props={}]\n         *        An object of properties that should be set on the element.\n         *\n         * @param {Object} [attributes={}]\n         *        An object of attributes that should be set on the element.\n         *\n         * @return {Element}\n         *         The element that gets created.\n         */\n        createEl(tag = 'div', props = {}, attributes = {}) {\n            props = Object.assign({\n                className: this.buildCSSClass(),\n                tabIndex: 0\n            }, props);\n            if (tag === 'button') {\n                log$1.error(`Creating a ClickableComponent with an HTML element of ${tag} is not supported; use a Button instead.`);\n            }\n\n            // Add ARIA attributes for clickable element which is not a native HTML button\n            attributes = Object.assign({\n                role: 'button'\n            }, attributes);\n            this.tabIndex_ = props.tabIndex;\n            const el = createEl(tag, props, attributes);\n            el.appendChild(createEl('span', {\n                className: 'vjs-icon-placeholder'\n            }, {\n                'aria-hidden': true\n            }));\n            this.createControlTextEl(el);\n            return el;\n        }\n        dispose() {\n            // remove controlTextEl_ on dispose\n            this.controlTextEl_ = null;\n            super.dispose();\n        }\n\n        /**\n         * Create a control text element on this `ClickableComponent`\n         *\n         * @param {Element} [el]\n         *        Parent element for the control text.\n         *\n         * @return {Element}\n         *         The control text element that gets created.\n         */\n        createControlTextEl(el) {\n            this.controlTextEl_ = createEl('span', {\n                className: 'vjs-control-text'\n            }, {\n                // let the screen reader user know that the text of the element may change\n                'aria-live': 'polite'\n            });\n            if (el) {\n                el.appendChild(this.controlTextEl_);\n            }\n            this.controlText(this.controlText_, el);\n            return this.controlTextEl_;\n        }\n\n        /**\n         * Get or set the localize text to use for the controls on the `ClickableComponent`.\n         *\n         * @param {string} [text]\n         *        Control text for element.\n         *\n         * @param {Element} [el=this.el()]\n         *        Element to set the title on.\n         *\n         * @return {string}\n         *         - The control text when getting\n         */\n        controlText(text, el = this.el()) {\n            if (text === undefined) {\n                return this.controlText_ || 'Need Text';\n            }\n            const localizedText = this.localize(text);\n\n            /** @protected */\n            this.controlText_ = text;\n            textContent(this.controlTextEl_, localizedText);\n            if (!this.nonIconControl && !this.player_.options_.noUITitleAttributes) {\n                // Set title attribute if only an icon is shown\n                el.setAttribute('title', localizedText);\n            }\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-control vjs-button ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * Enable this `ClickableComponent`\n         */\n        enable() {\n            if (!this.enabled_) {\n                this.enabled_ = true;\n                this.removeClass('vjs-disabled');\n                this.el_.setAttribute('aria-disabled', 'false');\n                if (typeof this.tabIndex_ !== 'undefined') {\n                    this.el_.setAttribute('tabIndex', this.tabIndex_);\n                }\n                this.on(['tap', 'click'], this.handleClick_);\n                this.on('keydown', this.handleKeyDown_);\n            }\n        }\n\n        /**\n         * Disable this `ClickableComponent`\n         */\n        disable() {\n            this.enabled_ = false;\n            this.addClass('vjs-disabled');\n            this.el_.setAttribute('aria-disabled', 'true');\n            if (typeof this.tabIndex_ !== 'undefined') {\n                this.el_.removeAttribute('tabIndex');\n            }\n            this.off('mouseover', this.handleMouseOver_);\n            this.off('mouseout', this.handleMouseOut_);\n            this.off(['tap', 'click'], this.handleClick_);\n            this.off('keydown', this.handleKeyDown_);\n        }\n\n        /**\n         * Handles language change in ClickableComponent for the player in components\n         *\n         *\n         */\n        handleLanguagechange() {\n            this.controlText(this.controlText_);\n        }\n\n        /**\n         * Event handler that is called when a `ClickableComponent` receives a\n         * `click` or `tap` event.\n         *\n         * @param {Event} event\n         *        The `tap` or `click` event that caused this function to be called.\n         *\n         * @listens tap\n         * @listens click\n         * @abstract\n         */\n        handleClick(event) {\n            if (this.options_.clickHandler) {\n                this.options_.clickHandler.call(this, arguments);\n            }\n        }\n\n        /**\n         * Event handler that is called when a `ClickableComponent` receives a\n         * `keydown` event.\n         *\n         * By default, if the key is Space or Enter, it will trigger a `click` event.\n         *\n         * @param {Event} event\n         *        The `keydown` event that caused this function to be called.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            // Support Space or Enter key operation to fire a click event. Also,\n            // prevent the event from propagating through the DOM and triggering\n            // Player hotkeys.\n            if (keycode.isEventKey(event, 'Space') || keycode.isEventKey(event, 'Enter')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.trigger('click');\n            } else {\n                // Pass keypress handling up for unsupported keys\n                super.handleKeyDown(event);\n            }\n        }\n    }\n    Component$1.registerComponent('ClickableComponent', ClickableComponent);\n\n    /**\n     * @file poster-image.js\n     */\n\n    /**\n     * A `ClickableComponent` that handles showing the poster image for the player.\n     *\n     * @extends ClickableComponent\n     */\n    class PosterImage extends ClickableComponent {\n        /**\n         * Create an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should attach to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.update();\n            this.update_ = e => this.update(e);\n            player.on('posterchange', this.update_);\n        }\n\n        /**\n         * Clean up and dispose of the `PosterImage`.\n         */\n        dispose() {\n            this.player().off('posterchange', this.update_);\n            super.dispose();\n        }\n\n        /**\n         * Create the `PosterImage`s DOM element.\n         *\n         * @return {Element}\n         *         The element that gets created.\n         */\n        createEl() {\n            // The el is an empty div to keep position in the DOM\n            // A picture and img el will be inserted when a source is set\n            return createEl('div', {\n                className: 'vjs-poster'\n            });\n        }\n\n        /**\n         * Get or set the `PosterImage`'s crossOrigin option.\n         *\n         * @param {string|null} [value]\n         *        The value to set the crossOrigin to. If an argument is\n         *        given, must be one of `'anonymous'` or `'use-credentials'`, or 'null'.\n         *\n         * @return {string|null}\n         *         - The current crossOrigin value of the `Player` when getting.\n         *         - undefined when setting\n         */\n        crossOrigin(value) {\n            // `null` can be set to unset a value\n            if (typeof value === 'undefined') {\n                if (this.$('img')) {\n                    // If the poster's element exists, give its value\n                    return this.$('img').crossOrigin;\n                } else if (this.player_.tech_ && this.player_.tech_.isReady_) {\n                    // If not but the tech is ready, query the tech\n                    return this.player_.crossOrigin();\n                }\n                // Otherwise check options as the  poster is usually set before the state of crossorigin\n                // can be retrieved by the getter\n                return this.player_.options_.crossOrigin || this.player_.options_.crossorigin || null;\n            }\n            if (value !== null && value !== 'anonymous' && value !== 'use-credentials') {\n                this.player_.log.warn(`crossOrigin must be null,  \"anonymous\" or \"use-credentials\", given \"${value}\"`);\n                return;\n            }\n            if (this.$('img')) {\n                this.$('img').crossOrigin = value;\n            }\n            return;\n        }\n\n        /**\n         * An {@link EventTarget~EventListener} for {@link Player#posterchange} events.\n         *\n         * @listens Player#posterchange\n         *\n         * @param {Event} [event]\n         *        The `Player#posterchange` event that triggered this function.\n         */\n        update(event) {\n            const url = this.player().poster();\n            this.setSrc(url);\n\n            // If there's no poster source we should display:none on this component\n            // so it's not still clickable or right-clickable\n            if (url) {\n                this.show();\n            } else {\n                this.hide();\n            }\n        }\n\n        /**\n         * Set the source of the `PosterImage` depending on the display method. (Re)creates\n         * the inner picture and img elementss when needed.\n         *\n         * @param {string} [url]\n         *        The URL to the source for the `PosterImage`. If not specified or falsy,\n         *        any source and ant inner picture/img are removed.\n         */\n        setSrc(url) {\n            if (!url) {\n                this.el_.textContent = '';\n                return;\n            }\n            if (!this.$('img')) {\n                this.el_.appendChild(createEl('picture', {\n                    className: 'vjs-poster',\n                    // Don't want poster to be tabbable.\n                    tabIndex: -1\n                }, {}, createEl('img', {\n                    loading: 'lazy',\n                    crossOrigin: this.crossOrigin()\n                }, {\n                    alt: ''\n                })));\n            }\n            this.$('img').src = url;\n        }\n\n        /**\n         * An {@link EventTarget~EventListener} for clicks on the `PosterImage`. See\n         * {@link ClickableComponent#handleClick} for instances where this will be triggered.\n         *\n         * @listens tap\n         * @listens click\n         * @listens keydown\n         *\n         * @param {Event} event\n         +        The `click`, `tap` or `keydown` event that caused this function to be called.\n         */\n        handleClick(event) {\n            // We don't want a click to trigger playback when controls are disabled\n            if (!this.player_.controls()) {\n                return;\n            }\n            if (this.player_.tech(true)) {\n                this.player_.tech(true).focus();\n            }\n            if (this.player_.paused()) {\n                silencePromise(this.player_.play());\n            } else {\n                this.player_.pause();\n            }\n        }\n    }\n\n    /**\n     * Get or set the `PosterImage`'s crossorigin option. For the HTML5 player, this\n     * sets the `crossOrigin` property on the `<img>` tag to control the CORS\n     * behavior.\n     *\n     * @param {string|null} [value]\n     *        The value to set the `PosterImages`'s crossorigin to. If an argument is\n     *        given, must be one of `anonymous` or `use-credentials`.\n     *\n     * @return {string|null|undefined}\n     *         - The current crossorigin value of the `Player` when getting.\n     *         - undefined when setting\n     */\n    PosterImage.prototype.crossorigin = PosterImage.prototype.crossOrigin;\n    Component$1.registerComponent('PosterImage', PosterImage);\n\n    /**\n     * @file text-track-display.js\n     */\n    const darkGray = '#222';\n    const lightGray = '#ccc';\n    const fontMap = {\n        monospace: 'monospace',\n        sansSerif: 'sans-serif',\n        serif: 'serif',\n        monospaceSansSerif: '\"Andale Mono\", \"Lucida Console\", monospace',\n        monospaceSerif: '\"Courier New\", monospace',\n        proportionalSansSerif: 'sans-serif',\n        proportionalSerif: 'serif',\n        casual: '\"Comic Sans MS\", Impact, fantasy',\n        script: '\"Monotype Corsiva\", cursive',\n        smallcaps: '\"Andale Mono\", \"Lucida Console\", monospace, sans-serif'\n    };\n\n    /**\n     * Construct an rgba color from a given hex color code.\n     *\n     * @param {number} color\n     *        Hex number for color, like #f0e or #f604e2.\n     *\n     * @param {number} opacity\n     *        Value for opacity, 0.0 - 1.0.\n     *\n     * @return {string}\n     *         The rgba color that was created, like 'rgba(255, 0, 0, 0.3)'.\n     */\n    function constructColor(color, opacity) {\n        let hex;\n        if (color.length === 4) {\n            // color looks like \"#f0e\"\n            hex = color[1] + color[1] + color[2] + color[2] + color[3] + color[3];\n        } else if (color.length === 7) {\n            // color looks like \"#f604e2\"\n            hex = color.slice(1);\n        } else {\n            throw new Error('Invalid color code provided, ' + color + '; must be formatted as e.g. #f0e or #f604e2.');\n        }\n        return 'rgba(' + parseInt(hex.slice(0, 2), 16) + ',' + parseInt(hex.slice(2, 4), 16) + ',' + parseInt(hex.slice(4, 6), 16) + ',' + opacity + ')';\n    }\n\n    /**\n     * Try to update the style of a DOM element. Some style changes will throw an error,\n     * particularly in IE8. Those should be noops.\n     *\n     * @param {Element} el\n     *        The DOM element to be styled.\n     *\n     * @param {string} style\n     *        The CSS property on the element that should be styled.\n     *\n     * @param {string} rule\n     *        The style rule that should be applied to the property.\n     *\n     * @private\n     */\n    function tryUpdateStyle(el, style, rule) {\n        try {\n            el.style[style] = rule;\n        } catch (e) {\n            // Satisfies linter.\n            return;\n        }\n    }\n\n    /**\n     * The component for displaying text track cues.\n     *\n     * @extends Component\n     */\n    class TextTrackDisplay extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {Function} [ready]\n         *        The function to call when `TextTrackDisplay` is ready.\n         */\n        constructor(player, options, ready) {\n            super(player, options, ready);\n            const updateDisplayHandler = e => this.updateDisplay(e);\n            player.on('loadstart', e => this.toggleDisplay(e));\n            player.on('texttrackchange', updateDisplayHandler);\n            player.on('loadedmetadata', e => this.preselectTrack(e));\n\n            // This used to be called during player init, but was causing an error\n            // if a track should show by default and the display hadn't loaded yet.\n            // Should probably be moved to an external track loader when we support\n            // tracks that don't need a display.\n            player.ready(bind_(this, function () {\n                if (player.tech_ && player.tech_.featuresNativeTextTracks) {\n                    this.hide();\n                    return;\n                }\n                player.on('fullscreenchange', updateDisplayHandler);\n                player.on('playerresize', updateDisplayHandler);\n                const screenOrientation = window.screen.orientation || window;\n                const changeOrientationEvent = window.screen.orientation ? 'change' : 'orientationchange';\n                screenOrientation.addEventListener(changeOrientationEvent, updateDisplayHandler);\n                player.on('dispose', () => screenOrientation.removeEventListener(changeOrientationEvent, updateDisplayHandler));\n                const tracks = this.options_.playerOptions.tracks || [];\n                for (let i = 0; i < tracks.length; i++) {\n                    this.player_.addRemoteTextTrack(tracks[i], true);\n                }\n                this.preselectTrack();\n            }));\n        }\n\n        /**\n         * Preselect a track following this precedence:\n         * - matches the previously selected {@link TextTrack}'s language and kind\n         * - matches the previously selected {@link TextTrack}'s language only\n         * - is the first default captions track\n         * - is the first default descriptions track\n         *\n         * @listens Player#loadstart\n         */\n        preselectTrack() {\n            const modes = {\n                captions: 1,\n                subtitles: 1\n            };\n            const trackList = this.player_.textTracks();\n            const userPref = this.player_.cache_.selectedLanguage;\n            let firstDesc;\n            let firstCaptions;\n            let preferredTrack;\n            for (let i = 0; i < trackList.length; i++) {\n                const track = trackList[i];\n                if (userPref && userPref.enabled && userPref.language && userPref.language === track.language && track.kind in modes) {\n                    // Always choose the track that matches both language and kind\n                    if (track.kind === userPref.kind) {\n                        preferredTrack = track;\n                        // or choose the first track that matches language\n                    } else if (!preferredTrack) {\n                        preferredTrack = track;\n                    }\n\n                    // clear everything if offTextTrackMenuItem was clicked\n                } else if (userPref && !userPref.enabled) {\n                    preferredTrack = null;\n                    firstDesc = null;\n                    firstCaptions = null;\n                } else if (track.default) {\n                    if (track.kind === 'descriptions' && !firstDesc) {\n                        firstDesc = track;\n                    } else if (track.kind in modes && !firstCaptions) {\n                        firstCaptions = track;\n                    }\n                }\n            }\n\n            // The preferredTrack matches the user preference and takes\n            // precedence over all the other tracks.\n            // So, display the preferredTrack before the first default track\n            // and the subtitles/captions track before the descriptions track\n            if (preferredTrack) {\n                preferredTrack.mode = 'showing';\n            } else if (firstCaptions) {\n                firstCaptions.mode = 'showing';\n            } else if (firstDesc) {\n                firstDesc.mode = 'showing';\n            }\n        }\n\n        /**\n         * Turn display of {@link TextTrack}'s from the current state into the other state.\n         * There are only two states:\n         * - 'shown'\n         * - 'hidden'\n         *\n         * @listens Player#loadstart\n         */\n        toggleDisplay() {\n            if (this.player_.tech_ && this.player_.tech_.featuresNativeTextTracks) {\n                this.hide();\n            } else {\n                this.show();\n            }\n        }\n\n        /**\n         * Create the {@link Component}'s DOM element.\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-text-track-display'\n            }, {\n                'translate': 'yes',\n                'aria-live': 'off',\n                'aria-atomic': 'true'\n            });\n        }\n\n        /**\n         * Clear all displayed {@link TextTrack}s.\n         */\n        clearDisplay() {\n            if (typeof window.WebVTT === 'function') {\n                window.WebVTT.processCues(window, [], this.el_);\n            }\n        }\n\n        /**\n         * Update the displayed TextTrack when a either a {@link Player#texttrackchange} or\n         * a {@link Player#fullscreenchange} is fired.\n         *\n         * @listens Player#texttrackchange\n         * @listens Player#fullscreenchange\n         */\n        updateDisplay() {\n            const tracks = this.player_.textTracks();\n            const allowMultipleShowingTracks = this.options_.allowMultipleShowingTracks;\n            this.clearDisplay();\n            if (allowMultipleShowingTracks) {\n                const showingTracks = [];\n                for (let i = 0; i < tracks.length; ++i) {\n                    const track = tracks[i];\n                    if (track.mode !== 'showing') {\n                        continue;\n                    }\n                    showingTracks.push(track);\n                }\n                this.updateForTrack(showingTracks);\n                return;\n            }\n\n            //  Track display prioritization model: if multiple tracks are 'showing',\n            //  display the first 'subtitles' or 'captions' track which is 'showing',\n            //  otherwise display the first 'descriptions' track which is 'showing'\n\n            let descriptionsTrack = null;\n            let captionsSubtitlesTrack = null;\n            let i = tracks.length;\n            while (i--) {\n                const track = tracks[i];\n                if (track.mode === 'showing') {\n                    if (track.kind === 'descriptions') {\n                        descriptionsTrack = track;\n                    } else {\n                        captionsSubtitlesTrack = track;\n                    }\n                }\n            }\n            if (captionsSubtitlesTrack) {\n                if (this.getAttribute('aria-live') !== 'off') {\n                    this.setAttribute('aria-live', 'off');\n                }\n                this.updateForTrack(captionsSubtitlesTrack);\n            } else if (descriptionsTrack) {\n                if (this.getAttribute('aria-live') !== 'assertive') {\n                    this.setAttribute('aria-live', 'assertive');\n                }\n                this.updateForTrack(descriptionsTrack);\n            }\n        }\n\n        /**\n         * Style {@Link TextTrack} activeCues according to {@Link TextTrackSettings}.\n         *\n         * @param {TextTrack} track\n         *        Text track object containing active cues to style.\n         */\n        updateDisplayState(track) {\n            const overrides = this.player_.textTrackSettings.getValues();\n            const cues = track.activeCues;\n            let i = cues.length;\n            while (i--) {\n                const cue = cues[i];\n                if (!cue) {\n                    continue;\n                }\n                const cueDiv = cue.displayState;\n                if (overrides.color) {\n                    cueDiv.firstChild.style.color = overrides.color;\n                }\n                if (overrides.textOpacity) {\n                    tryUpdateStyle(cueDiv.firstChild, 'color', constructColor(overrides.color || '#fff', overrides.textOpacity));\n                }\n                if (overrides.backgroundColor) {\n                    cueDiv.firstChild.style.backgroundColor = overrides.backgroundColor;\n                }\n                if (overrides.backgroundOpacity) {\n                    tryUpdateStyle(cueDiv.firstChild, 'backgroundColor', constructColor(overrides.backgroundColor || '#000', overrides.backgroundOpacity));\n                }\n                if (overrides.windowColor) {\n                    if (overrides.windowOpacity) {\n                        tryUpdateStyle(cueDiv, 'backgroundColor', constructColor(overrides.windowColor, overrides.windowOpacity));\n                    } else {\n                        cueDiv.style.backgroundColor = overrides.windowColor;\n                    }\n                }\n                if (overrides.edgeStyle) {\n                    if (overrides.edgeStyle === 'dropshadow') {\n                        cueDiv.firstChild.style.textShadow = `2px 2px 3px ${darkGray}, 2px 2px 4px ${darkGray}, 2px 2px 5px ${darkGray}`;\n                    } else if (overrides.edgeStyle === 'raised') {\n                        cueDiv.firstChild.style.textShadow = `1px 1px ${darkGray}, 2px 2px ${darkGray}, 3px 3px ${darkGray}`;\n                    } else if (overrides.edgeStyle === 'depressed') {\n                        cueDiv.firstChild.style.textShadow = `1px 1px ${lightGray}, 0 1px ${lightGray}, -1px -1px ${darkGray}, 0 -1px ${darkGray}`;\n                    } else if (overrides.edgeStyle === 'uniform') {\n                        cueDiv.firstChild.style.textShadow = `0 0 4px ${darkGray}, 0 0 4px ${darkGray}, 0 0 4px ${darkGray}, 0 0 4px ${darkGray}`;\n                    }\n                }\n                if (overrides.fontPercent && overrides.fontPercent !== 1) {\n                    const fontSize = window.parseFloat(cueDiv.style.fontSize);\n                    cueDiv.style.fontSize = fontSize * overrides.fontPercent + 'px';\n                    cueDiv.style.height = 'auto';\n                    cueDiv.style.top = 'auto';\n                }\n                if (overrides.fontFamily && overrides.fontFamily !== 'default') {\n                    if (overrides.fontFamily === 'small-caps') {\n                        cueDiv.firstChild.style.fontVariant = 'small-caps';\n                    } else {\n                        cueDiv.firstChild.style.fontFamily = fontMap[overrides.fontFamily];\n                    }\n                }\n            }\n        }\n\n        /**\n         * Add an {@link TextTrack} to to the {@link Tech}s {@link TextTrackList}.\n         *\n         * @param {TextTrack|TextTrack[]} tracks\n         *        Text track object or text track array to be added to the list.\n         */\n        updateForTrack(tracks) {\n            if (!Array.isArray(tracks)) {\n                tracks = [tracks];\n            }\n            if (typeof window.WebVTT !== 'function' || tracks.every(track => {\n                return !track.activeCues;\n            })) {\n                return;\n            }\n            const cues = [];\n\n            // push all active track cues\n            for (let i = 0; i < tracks.length; ++i) {\n                const track = tracks[i];\n                for (let j = 0; j < track.activeCues.length; ++j) {\n                    cues.push(track.activeCues[j]);\n                }\n            }\n\n            // removes all cues before it processes new ones\n            window.WebVTT.processCues(window, cues, this.el_);\n\n            // add unique class to each language text track & add settings styling if necessary\n            for (let i = 0; i < tracks.length; ++i) {\n                const track = tracks[i];\n                for (let j = 0; j < track.activeCues.length; ++j) {\n                    const cueEl = track.activeCues[j].displayState;\n                    addClass(cueEl, 'vjs-text-track-cue', 'vjs-text-track-cue-' + (track.language ? track.language : i));\n                    if (track.language) {\n                        setAttribute(cueEl, 'lang', track.language);\n                    }\n                }\n                if (this.player_.textTrackSettings) {\n                    this.updateDisplayState(track);\n                }\n            }\n        }\n    }\n    Component$1.registerComponent('TextTrackDisplay', TextTrackDisplay);\n\n    /**\n     * @file loading-spinner.js\n     */\n\n    /**\n     * A loading spinner for use during waiting/loading events.\n     *\n     * @extends Component\n     */\n    class LoadingSpinner extends Component$1 {\n        /**\n         * Create the `LoadingSpinner`s DOM element.\n         *\n         * @return {Element}\n         *         The dom element that gets created.\n         */\n        createEl() {\n            const isAudio = this.player_.isAudio();\n            const playerType = this.localize(isAudio ? 'Audio Player' : 'Video Player');\n            const controlText = createEl('span', {\n                className: 'vjs-control-text',\n                textContent: this.localize('{1} is loading.', [playerType])\n            });\n            const el = super.createEl('div', {\n                className: 'vjs-loading-spinner',\n                dir: 'ltr'\n            });\n            el.appendChild(controlText);\n            return el;\n        }\n\n        /**\n         * Update control text on languagechange\n         */\n        handleLanguagechange() {\n            this.$('.vjs-control-text').textContent = this.localize('{1} is loading.', [this.player_.isAudio() ? 'Audio Player' : 'Video Player']);\n        }\n    }\n    Component$1.registerComponent('LoadingSpinner', LoadingSpinner);\n\n    /**\n     * @file button.js\n     */\n\n    /**\n     * Base class for all buttons.\n     *\n     * @extends ClickableComponent\n     */\n    class Button extends ClickableComponent {\n        /**\n         * Create the `Button`s DOM element.\n         *\n         * @param {string} [tag=\"button\"]\n         *        The element's node type. This argument is IGNORED: no matter what\n         *        is passed, it will always create a `button` element.\n         *\n         * @param {Object} [props={}]\n         *        An object of properties that should be set on the element.\n         *\n         * @param {Object} [attributes={}]\n         *        An object of attributes that should be set on the element.\n         *\n         * @return {Element}\n         *         The element that gets created.\n         */\n        createEl(tag, props = {}, attributes = {}) {\n            tag = 'button';\n            props = Object.assign({\n                className: this.buildCSSClass()\n            }, props);\n\n            // Add attributes for button element\n            attributes = Object.assign({\n                // Necessary since the default button type is \"submit\"\n                type: 'button'\n            }, attributes);\n            const el = createEl(tag, props, attributes);\n            el.appendChild(createEl('span', {\n                className: 'vjs-icon-placeholder'\n            }, {\n                'aria-hidden': true\n            }));\n            this.createControlTextEl(el);\n            return el;\n        }\n\n        /**\n         * Add a child `Component` inside of this `Button`.\n         *\n         * @param {string|Component} child\n         *        The name or instance of a child to add.\n         *\n         * @param {Object} [options={}]\n         *        The key/value store of options that will get passed to children of\n         *        the child.\n         *\n         * @return {Component}\n         *         The `Component` that gets added as a child. When using a string the\n         *         `Component` will get created by this process.\n         *\n         * @deprecated since version 5\n         */\n        addChild(child, options = {}) {\n            const className = this.constructor.name;\n            log$1.warn(`Adding an actionable (user controllable) child to a Button (${className}) is not supported; use a ClickableComponent instead.`);\n\n            // Avoid the error message generated by ClickableComponent's addChild method\n            return Component$1.prototype.addChild.call(this, child, options);\n        }\n\n        /**\n         * Enable the `Button` element so that it can be activated or clicked. Use this with\n         * {@link Button#disable}.\n         */\n        enable() {\n            super.enable();\n            this.el_.removeAttribute('disabled');\n        }\n\n        /**\n         * Disable the `Button` element so that it cannot be activated or clicked. Use this with\n         * {@link Button#enable}.\n         */\n        disable() {\n            super.disable();\n            this.el_.setAttribute('disabled', 'disabled');\n        }\n\n        /**\n         * This gets called when a `Button` has focus and `keydown` is triggered via a key\n         * press.\n         *\n         * @param {Event} event\n         *        The event that caused this function to get called.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            // Ignore Space or Enter key operation, which is handled by the browser for\n            // a button - though not for its super class, ClickableComponent. Also,\n            // prevent the event from propagating through the DOM and triggering Player\n            // hotkeys. We do not preventDefault here because we _want_ the browser to\n            // handle it.\n            if (keycode.isEventKey(event, 'Space') || keycode.isEventKey(event, 'Enter')) {\n                event.stopPropagation();\n                return;\n            }\n\n            // Pass keypress handling up for unsupported keys\n            super.handleKeyDown(event);\n        }\n    }\n    Component$1.registerComponent('Button', Button);\n\n    /**\n     * @file big-play-button.js\n     */\n\n    /**\n     * The initial play button that shows before the video has played. The hiding of the\n     * `BigPlayButton` get done via CSS and `Player` states.\n     *\n     * @extends Button\n     */\n    class BigPlayButton extends Button {\n        constructor(player, options) {\n            super(player, options);\n            this.mouseused_ = false;\n            this.on('mousedown', e => this.handleMouseDown(e));\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object. Always returns 'vjs-big-play-button'.\n         */\n        buildCSSClass() {\n            return 'vjs-big-play-button';\n        }\n\n        /**\n         * This gets called when a `BigPlayButton` \"clicked\". See {@link ClickableComponent}\n         * for more detailed information on what a click can be.\n         *\n         * @param {KeyboardEvent} event\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            const playPromise = this.player_.play();\n\n            // exit early if clicked via the mouse\n            if (this.mouseused_ && event.clientX && event.clientY) {\n                silencePromise(playPromise);\n                if (this.player_.tech(true)) {\n                    this.player_.tech(true).focus();\n                }\n                return;\n            }\n            const cb = this.player_.getChild('controlBar');\n            const playToggle = cb && cb.getChild('playToggle');\n            if (!playToggle) {\n                this.player_.tech(true).focus();\n                return;\n            }\n            const playFocus = () => playToggle.focus();\n            if (isPromise(playPromise)) {\n                playPromise.then(playFocus, () => {});\n            } else {\n                this.setTimeout(playFocus, 1);\n            }\n        }\n        handleKeyDown(event) {\n            this.mouseused_ = false;\n            super.handleKeyDown(event);\n        }\n        handleMouseDown(event) {\n            this.mouseused_ = true;\n        }\n    }\n\n    /**\n     * The text that should display over the `BigPlayButton`s controls. Added to for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    BigPlayButton.prototype.controlText_ = 'Play Video';\n    Component$1.registerComponent('BigPlayButton', BigPlayButton);\n\n    /**\n     * @file close-button.js\n     */\n\n    /**\n     * The `CloseButton` is a `{@link Button}` that fires a `close` event when\n     * it gets clicked.\n     *\n     * @extends Button\n     */\n    class CloseButton extends Button {\n        /**\n         * Creates an instance of the this class.\n         *\n         * @param  { import('./player').default } player\n         *         The `Player` that this class should be attached to.\n         *\n         * @param  {Object} [options]\n         *         The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.controlText(options && options.controlText || this.localize('Close'));\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-close-button ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * This gets called when a `CloseButton` gets clicked. See\n         * {@link ClickableComponent#handleClick} for more information on when\n         * this will be triggered\n         *\n         * @param {Event} event\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         * @fires CloseButton#close\n         */\n        handleClick(event) {\n            /**\n             * Triggered when the a `CloseButton` is clicked.\n             *\n             * @event CloseButton#close\n             * @type {Event}\n             *\n             * @property {boolean} [bubbles=false]\n             *           set to false so that the close event does not\n             *           bubble up to parents if there is no listener\n             */\n            this.trigger({\n                type: 'close',\n                bubbles: false\n            });\n        }\n        /**\n         * Event handler that is called when a `CloseButton` receives a\n         * `keydown` event.\n         *\n         * By default, if the key is Esc, it will trigger a `click` event.\n         *\n         * @param {Event} event\n         *        The `keydown` event that caused this function to be called.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            // Esc button will trigger `click` event\n            if (keycode.isEventKey(event, 'Esc')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.trigger('click');\n            } else {\n                // Pass keypress handling up for unsupported keys\n                super.handleKeyDown(event);\n            }\n        }\n    }\n    Component$1.registerComponent('CloseButton', CloseButton);\n\n    /**\n     * @file play-toggle.js\n     */\n\n    /**\n     * Button to toggle between play and pause.\n     *\n     * @extends Button\n     */\n    class PlayToggle extends Button {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options={}]\n         *        The key/value store of player options.\n         */\n        constructor(player, options = {}) {\n            super(player, options);\n\n            // show or hide replay icon\n            options.replay = options.replay === undefined || options.replay;\n            this.on(player, 'play', e => this.handlePlay(e));\n            this.on(player, 'pause', e => this.handlePause(e));\n            if (options.replay) {\n                this.on(player, 'ended', e => this.handleEnded(e));\n            }\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-play-control ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * This gets called when an `PlayToggle` is \"clicked\". See\n         * {@link ClickableComponent} for more detailed information on what a click can be.\n         *\n         * @param {Event} [event]\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            if (this.player_.paused()) {\n                silencePromise(this.player_.play());\n            } else {\n                this.player_.pause();\n            }\n        }\n\n        /**\n         * This gets called once after the video has ended and the user seeks so that\n         * we can change the replay button back to a play button.\n         *\n         * @param {Event} [event]\n         *        The event that caused this function to run.\n         *\n         * @listens Player#seeked\n         */\n        handleSeeked(event) {\n            this.removeClass('vjs-ended');\n            if (this.player_.paused()) {\n                this.handlePause(event);\n            } else {\n                this.handlePlay(event);\n            }\n        }\n\n        /**\n         * Add the vjs-playing class to the element so it can change appearance.\n         *\n         * @param {Event} [event]\n         *        The event that caused this function to run.\n         *\n         * @listens Player#play\n         */\n        handlePlay(event) {\n            this.removeClass('vjs-ended', 'vjs-paused');\n            this.addClass('vjs-playing');\n            // change the button text to \"Pause\"\n            this.controlText('Pause');\n        }\n\n        /**\n         * Add the vjs-paused class to the element so it can change appearance.\n         *\n         * @param {Event} [event]\n         *        The event that caused this function to run.\n         *\n         * @listens Player#pause\n         */\n        handlePause(event) {\n            this.removeClass('vjs-playing');\n            this.addClass('vjs-paused');\n            // change the button text to \"Play\"\n            this.controlText('Play');\n        }\n\n        /**\n         * Add the vjs-ended class to the element so it can change appearance\n         *\n         * @param {Event} [event]\n         *        The event that caused this function to run.\n         *\n         * @listens Player#ended\n         */\n        handleEnded(event) {\n            this.removeClass('vjs-playing');\n            this.addClass('vjs-ended');\n            // change the button text to \"Replay\"\n            this.controlText('Replay');\n\n            // on the next seek remove the replay button\n            this.one(this.player_, 'seeked', e => this.handleSeeked(e));\n        }\n    }\n\n    /**\n     * The text that should display over the `PlayToggle`s controls. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    PlayToggle.prototype.controlText_ = 'Play';\n    Component$1.registerComponent('PlayToggle', PlayToggle);\n\n    /**\n     * @file time-display.js\n     */\n\n    /**\n     * Displays time information about the video\n     *\n     * @extends Component\n     */\n    class TimeDisplay extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.on(player, ['timeupdate', 'ended'], e => this.updateContent(e));\n            this.updateTextNode_();\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            const className = this.buildCSSClass();\n            const el = super.createEl('div', {\n                className: `${className} vjs-time-control vjs-control`\n            });\n            const span = createEl('span', {\n                className: 'vjs-control-text',\n                textContent: `${this.localize(this.labelText_)}\\u00a0`\n            }, {\n                role: 'presentation'\n            });\n            el.appendChild(span);\n            this.contentEl_ = createEl('span', {\n                className: `${className}-display`\n            }, {\n                // span elements have no implicit role, but some screen readers (notably VoiceOver)\n                // treat them as a break between items in the DOM when using arrow keys\n                // (or left-to-right swipes on iOS) to read contents of a page. Using\n                // role='presentation' causes VoiceOver to NOT treat this span as a break.\n                role: 'presentation'\n            });\n            el.appendChild(this.contentEl_);\n            return el;\n        }\n        dispose() {\n            this.contentEl_ = null;\n            this.textNode_ = null;\n            super.dispose();\n        }\n\n        /**\n         * Updates the time display text node with a new time\n         *\n         * @param {number} [time=0] the time to update to\n         *\n         * @private\n         */\n        updateTextNode_(time = 0) {\n            time = formatTime(time);\n            if (this.formattedTime_ === time) {\n                return;\n            }\n            this.formattedTime_ = time;\n            this.requestNamedAnimationFrame('TimeDisplay#updateTextNode_', () => {\n                if (!this.contentEl_) {\n                    return;\n                }\n                let oldNode = this.textNode_;\n                if (oldNode && this.contentEl_.firstChild !== oldNode) {\n                    oldNode = null;\n                    log$1.warn('TimeDisplay#updateTextnode_: Prevented replacement of text node element since it was no longer a child of this node. Appending a new node instead.');\n                }\n                this.textNode_ = document.createTextNode(this.formattedTime_);\n                if (!this.textNode_) {\n                    return;\n                }\n                if (oldNode) {\n                    this.contentEl_.replaceChild(this.textNode_, oldNode);\n                } else {\n                    this.contentEl_.appendChild(this.textNode_);\n                }\n            });\n        }\n\n        /**\n         * To be filled out in the child class, should update the displayed time\n         * in accordance with the fact that the current time has changed.\n         *\n         * @param {Event} [event]\n         *        The `timeupdate`  event that caused this to run.\n         *\n         * @listens Player#timeupdate\n         */\n        updateContent(event) {}\n    }\n\n    /**\n     * The text that is added to the `TimeDisplay` for screen reader users.\n     *\n     * @type {string}\n     * @private\n     */\n    TimeDisplay.prototype.labelText_ = 'Time';\n\n    /**\n     * The text that should display over the `TimeDisplay`s controls. Added to for localization.\n     *\n     * @type {string}\n     * @protected\n     *\n     * @deprecated in v7; controlText_ is not used in non-active display Components\n     */\n    TimeDisplay.prototype.controlText_ = 'Time';\n    Component$1.registerComponent('TimeDisplay', TimeDisplay);\n\n    /**\n     * @file current-time-display.js\n     */\n\n    /**\n     * Displays the current time\n     *\n     * @extends Component\n     */\n    class CurrentTimeDisplay extends TimeDisplay {\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return 'vjs-current-time';\n        }\n\n        /**\n         * Update current time display\n         *\n         * @param {Event} [event]\n         *        The `timeupdate` event that caused this function to run.\n         *\n         * @listens Player#timeupdate\n         */\n        updateContent(event) {\n            // Allows for smooth scrubbing, when player can't keep up.\n            let time;\n            if (this.player_.ended()) {\n                time = this.player_.duration();\n            } else {\n                time = this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();\n            }\n            this.updateTextNode_(time);\n        }\n    }\n\n    /**\n     * The text that is added to the `CurrentTimeDisplay` for screen reader users.\n     *\n     * @type {string}\n     * @private\n     */\n    CurrentTimeDisplay.prototype.labelText_ = 'Current Time';\n\n    /**\n     * The text that should display over the `CurrentTimeDisplay`s controls. Added to for localization.\n     *\n     * @type {string}\n     * @protected\n     *\n     * @deprecated in v7; controlText_ is not used in non-active display Components\n     */\n    CurrentTimeDisplay.prototype.controlText_ = 'Current Time';\n    Component$1.registerComponent('CurrentTimeDisplay', CurrentTimeDisplay);\n\n    /**\n     * @file duration-display.js\n     */\n\n    /**\n     * Displays the duration\n     *\n     * @extends Component\n     */\n    class DurationDisplay extends TimeDisplay {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            const updateContent = e => this.updateContent(e);\n\n            // we do not want to/need to throttle duration changes,\n            // as they should always display the changed duration as\n            // it has changed\n            this.on(player, 'durationchange', updateContent);\n\n            // Listen to loadstart because the player duration is reset when a new media element is loaded,\n            // but the durationchange on the user agent will not fire.\n            // @see [Spec]{@link https://www.w3.org/TR/2011/WD-html5-20110113/video.html#media-element-load-algorithm}\n            this.on(player, 'loadstart', updateContent);\n\n            // Also listen for timeupdate (in the parent) and loadedmetadata because removing those\n            // listeners could have broken dependent applications/libraries. These\n            // can likely be removed for 7.0.\n            this.on(player, 'loadedmetadata', updateContent);\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return 'vjs-duration';\n        }\n\n        /**\n         * Update duration time display.\n         *\n         * @param {Event} [event]\n         *        The `durationchange`, `timeupdate`, or `loadedmetadata` event that caused\n         *        this function to be called.\n         *\n         * @listens Player#durationchange\n         * @listens Player#timeupdate\n         * @listens Player#loadedmetadata\n         */\n        updateContent(event) {\n            const duration = this.player_.duration();\n            this.updateTextNode_(duration);\n        }\n    }\n\n    /**\n     * The text that is added to the `DurationDisplay` for screen reader users.\n     *\n     * @type {string}\n     * @private\n     */\n    DurationDisplay.prototype.labelText_ = 'Duration';\n\n    /**\n     * The text that should display over the `DurationDisplay`s controls. Added to for localization.\n     *\n     * @type {string}\n     * @protected\n     *\n     * @deprecated in v7; controlText_ is not used in non-active display Components\n     */\n    DurationDisplay.prototype.controlText_ = 'Duration';\n    Component$1.registerComponent('DurationDisplay', DurationDisplay);\n\n    /**\n     * @file time-divider.js\n     */\n\n    /**\n     * The separator between the current time and duration.\n     * Can be hidden if it's not needed in the design.\n     *\n     * @extends Component\n     */\n    class TimeDivider extends Component$1 {\n        /**\n         * Create the component's DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            const el = super.createEl('div', {\n                className: 'vjs-time-control vjs-time-divider'\n            }, {\n                // this element and its contents can be hidden from assistive techs since\n                // it is made extraneous by the announcement of the control text\n                // for the current time and duration displays\n                'aria-hidden': true\n            });\n            const div = super.createEl('div');\n            const span = super.createEl('span', {\n                textContent: '/'\n            });\n            div.appendChild(span);\n            el.appendChild(div);\n            return el;\n        }\n    }\n    Component$1.registerComponent('TimeDivider', TimeDivider);\n\n    /**\n     * @file remaining-time-display.js\n     */\n\n    /**\n     * Displays the time left in the video\n     *\n     * @extends Component\n     */\n    class RemainingTimeDisplay extends TimeDisplay {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.on(player, 'durationchange', e => this.updateContent(e));\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return 'vjs-remaining-time';\n        }\n\n        /**\n         * Create the `Component`'s DOM element with the \"minus\" character prepend to the time\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            const el = super.createEl();\n            if (this.options_.displayNegative !== false) {\n                el.insertBefore(createEl('span', {}, {\n                    'aria-hidden': true\n                }, '-'), this.contentEl_);\n            }\n            return el;\n        }\n\n        /**\n         * Update remaining time display.\n         *\n         * @param {Event} [event]\n         *        The `timeupdate` or `durationchange` event that caused this to run.\n         *\n         * @listens Player#timeupdate\n         * @listens Player#durationchange\n         */\n        updateContent(event) {\n            if (typeof this.player_.duration() !== 'number') {\n                return;\n            }\n            let time;\n\n            // @deprecated We should only use remainingTimeDisplay\n            // as of video.js 7\n            if (this.player_.ended()) {\n                time = 0;\n            } else if (this.player_.remainingTimeDisplay) {\n                time = this.player_.remainingTimeDisplay();\n            } else {\n                time = this.player_.remainingTime();\n            }\n            this.updateTextNode_(time);\n        }\n    }\n\n    /**\n     * The text that is added to the `RemainingTimeDisplay` for screen reader users.\n     *\n     * @type {string}\n     * @private\n     */\n    RemainingTimeDisplay.prototype.labelText_ = 'Remaining Time';\n\n    /**\n     * The text that should display over the `RemainingTimeDisplay`s controls. Added to for localization.\n     *\n     * @type {string}\n     * @protected\n     *\n     * @deprecated in v7; controlText_ is not used in non-active display Components\n     */\n    RemainingTimeDisplay.prototype.controlText_ = 'Remaining Time';\n    Component$1.registerComponent('RemainingTimeDisplay', RemainingTimeDisplay);\n\n    /**\n     * @file live-display.js\n     */\n\n    // TODO - Future make it click to snap to live\n\n    /**\n     * Displays the live indicator when duration is Infinity.\n     *\n     * @extends Component\n     */\n    class LiveDisplay extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.updateShowing();\n            this.on(this.player(), 'durationchange', e => this.updateShowing(e));\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            const el = super.createEl('div', {\n                className: 'vjs-live-control vjs-control'\n            });\n            this.contentEl_ = createEl('div', {\n                className: 'vjs-live-display'\n            }, {\n                'aria-live': 'off'\n            });\n            this.contentEl_.appendChild(createEl('span', {\n                className: 'vjs-control-text',\n                textContent: `${this.localize('Stream Type')}\\u00a0`\n            }));\n            this.contentEl_.appendChild(document.createTextNode(this.localize('LIVE')));\n            el.appendChild(this.contentEl_);\n            return el;\n        }\n        dispose() {\n            this.contentEl_ = null;\n            super.dispose();\n        }\n\n        /**\n         * Check the duration to see if the LiveDisplay should be showing or not. Then show/hide\n         * it accordingly\n         *\n         * @param {Event} [event]\n         *        The {@link Player#durationchange} event that caused this function to run.\n         *\n         * @listens Player#durationchange\n         */\n        updateShowing(event) {\n            if (this.player().duration() === Infinity) {\n                this.show();\n            } else {\n                this.hide();\n            }\n        }\n    }\n    Component$1.registerComponent('LiveDisplay', LiveDisplay);\n\n    /**\n     * @file seek-to-live.js\n     */\n\n    /**\n     * Displays the live indicator when duration is Infinity.\n     *\n     * @extends Component\n     */\n    class SeekToLive extends Button {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.updateLiveEdgeStatus();\n            if (this.player_.liveTracker) {\n                this.updateLiveEdgeStatusHandler_ = e => this.updateLiveEdgeStatus(e);\n                this.on(this.player_.liveTracker, 'liveedgechange', this.updateLiveEdgeStatusHandler_);\n            }\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            const el = super.createEl('button', {\n                className: 'vjs-seek-to-live-control vjs-control'\n            });\n            this.textEl_ = createEl('span', {\n                className: 'vjs-seek-to-live-text',\n                textContent: this.localize('LIVE')\n            }, {\n                'aria-hidden': 'true'\n            });\n            el.appendChild(this.textEl_);\n            return el;\n        }\n\n        /**\n         * Update the state of this button if we are at the live edge\n         * or not\n         */\n        updateLiveEdgeStatus() {\n            // default to live edge\n            if (!this.player_.liveTracker || this.player_.liveTracker.atLiveEdge()) {\n                this.setAttribute('aria-disabled', true);\n                this.addClass('vjs-at-live-edge');\n                this.controlText('Seek to live, currently playing live');\n            } else {\n                this.setAttribute('aria-disabled', false);\n                this.removeClass('vjs-at-live-edge');\n                this.controlText('Seek to live, currently behind live');\n            }\n        }\n\n        /**\n         * On click bring us as near to the live point as possible.\n         * This requires that we wait for the next `live-seekable-change`\n         * event which will happen every segment length seconds.\n         */\n        handleClick() {\n            this.player_.liveTracker.seekToLiveEdge();\n        }\n\n        /**\n         * Dispose of the element and stop tracking\n         */\n        dispose() {\n            if (this.player_.liveTracker) {\n                this.off(this.player_.liveTracker, 'liveedgechange', this.updateLiveEdgeStatusHandler_);\n            }\n            this.textEl_ = null;\n            super.dispose();\n        }\n    }\n    /**\n     * The text that should display over the `SeekToLive`s control. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    SeekToLive.prototype.controlText_ = 'Seek to live, currently playing live';\n    Component$1.registerComponent('SeekToLive', SeekToLive);\n\n    /**\n     * @file num.js\n     * @module num\n     */\n\n    /**\n     * Keep a number between a min and a max value\n     *\n     * @param {number} number\n     *        The number to clamp\n     *\n     * @param {number} min\n     *        The minimum value\n     * @param {number} max\n     *        The maximum value\n     *\n     * @return {number}\n     *         the clamped number\n     */\n    function clamp(number, min, max) {\n        number = Number(number);\n        return Math.min(max, Math.max(min, isNaN(number) ? min : number));\n    }\n\n    var Num = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        clamp: clamp\n    });\n\n    /**\n     * @file slider.js\n     */\n\n    /**\n     * The base functionality for a slider. Can be vertical or horizontal.\n     * For instance the volume bar or the seek bar on a video is a slider.\n     *\n     * @extends Component\n     */\n    class Slider extends Component$1 {\n        /**\n         * Create an instance of this class\n         *\n         * @param { import('../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.handleMouseDown_ = e => this.handleMouseDown(e);\n            this.handleMouseUp_ = e => this.handleMouseUp(e);\n            this.handleKeyDown_ = e => this.handleKeyDown(e);\n            this.handleClick_ = e => this.handleClick(e);\n            this.handleMouseMove_ = e => this.handleMouseMove(e);\n            this.update_ = e => this.update(e);\n\n            // Set property names to bar to match with the child Slider class is looking for\n            this.bar = this.getChild(this.options_.barName);\n\n            // Set a horizontal or vertical class on the slider depending on the slider type\n            this.vertical(!!this.options_.vertical);\n            this.enable();\n        }\n\n        /**\n         * Are controls are currently enabled for this slider or not.\n         *\n         * @return {boolean}\n         *         true if controls are enabled, false otherwise\n         */\n        enabled() {\n            return this.enabled_;\n        }\n\n        /**\n         * Enable controls for this slider if they are disabled\n         */\n        enable() {\n            if (this.enabled()) {\n                return;\n            }\n            this.on('mousedown', this.handleMouseDown_);\n            this.on('touchstart', this.handleMouseDown_);\n            this.on('keydown', this.handleKeyDown_);\n            this.on('click', this.handleClick_);\n\n            // TODO: deprecated, controlsvisible does not seem to be fired\n            this.on(this.player_, 'controlsvisible', this.update);\n            if (this.playerEvent) {\n                this.on(this.player_, this.playerEvent, this.update);\n            }\n            this.removeClass('disabled');\n            this.setAttribute('tabindex', 0);\n            this.enabled_ = true;\n        }\n\n        /**\n         * Disable controls for this slider if they are enabled\n         */\n        disable() {\n            if (!this.enabled()) {\n                return;\n            }\n            const doc = this.bar.el_.ownerDocument;\n            this.off('mousedown', this.handleMouseDown_);\n            this.off('touchstart', this.handleMouseDown_);\n            this.off('keydown', this.handleKeyDown_);\n            this.off('click', this.handleClick_);\n            this.off(this.player_, 'controlsvisible', this.update_);\n            this.off(doc, 'mousemove', this.handleMouseMove_);\n            this.off(doc, 'mouseup', this.handleMouseUp_);\n            this.off(doc, 'touchmove', this.handleMouseMove_);\n            this.off(doc, 'touchend', this.handleMouseUp_);\n            this.removeAttribute('tabindex');\n            this.addClass('disabled');\n            if (this.playerEvent) {\n                this.off(this.player_, this.playerEvent, this.update);\n            }\n            this.enabled_ = false;\n        }\n\n        /**\n         * Create the `Slider`s DOM element.\n         *\n         * @param {string} type\n         *        Type of element to create.\n         *\n         * @param {Object} [props={}]\n         *        List of properties in Object form.\n         *\n         * @param {Object} [attributes={}]\n         *        list of attributes in Object form.\n         *\n         * @return {Element}\n         *         The element that gets created.\n         */\n        createEl(type, props = {}, attributes = {}) {\n            // Add the slider element class to all sub classes\n            props.className = props.className + ' vjs-slider';\n            props = Object.assign({\n                tabIndex: 0\n            }, props);\n            attributes = Object.assign({\n                'role': 'slider',\n                'aria-valuenow': 0,\n                'aria-valuemin': 0,\n                'aria-valuemax': 100\n            }, attributes);\n            return super.createEl(type, props, attributes);\n        }\n\n        /**\n         * Handle `mousedown` or `touchstart` events on the `Slider`.\n         *\n         * @param {MouseEvent} event\n         *        `mousedown` or `touchstart` event that triggered this function\n         *\n         * @listens mousedown\n         * @listens touchstart\n         * @fires Slider#slideractive\n         */\n        handleMouseDown(event) {\n            const doc = this.bar.el_.ownerDocument;\n            if (event.type === 'mousedown') {\n                event.preventDefault();\n            }\n            // Do not call preventDefault() on touchstart in Chrome\n            // to avoid console warnings. Use a 'touch-action: none' style\n            // instead to prevent unintended scrolling.\n            // https://developers.google.com/web/updates/2017/01/scrolling-intervention\n            if (event.type === 'touchstart' && !IS_CHROME) {\n                event.preventDefault();\n            }\n            blockTextSelection();\n            this.addClass('vjs-sliding');\n            /**\n             * Triggered when the slider is in an active state\n             *\n             * @event Slider#slideractive\n             * @type {MouseEvent}\n             */\n            this.trigger('slideractive');\n            this.on(doc, 'mousemove', this.handleMouseMove_);\n            this.on(doc, 'mouseup', this.handleMouseUp_);\n            this.on(doc, 'touchmove', this.handleMouseMove_);\n            this.on(doc, 'touchend', this.handleMouseUp_);\n            this.handleMouseMove(event, true);\n        }\n\n        /**\n         * Handle the `mousemove`, `touchmove`, and `mousedown` events on this `Slider`.\n         * The `mousemove` and `touchmove` events will only only trigger this function during\n         * `mousedown` and `touchstart`. This is due to {@link Slider#handleMouseDown} and\n         * {@link Slider#handleMouseUp}.\n         *\n         * @param {MouseEvent} event\n         *        `mousedown`, `mousemove`, `touchstart`, or `touchmove` event that triggered\n         *        this function\n         * @param {boolean} mouseDown this is a flag that should be set to true if `handleMouseMove` is called directly. It allows us to skip things that should not happen if coming from mouse down but should happen on regular mouse move handler. Defaults to false.\n         *\n         * @listens mousemove\n         * @listens touchmove\n         */\n        handleMouseMove(event) {}\n\n        /**\n         * Handle `mouseup` or `touchend` events on the `Slider`.\n         *\n         * @param {MouseEvent} event\n         *        `mouseup` or `touchend` event that triggered this function.\n         *\n         * @listens touchend\n         * @listens mouseup\n         * @fires Slider#sliderinactive\n         */\n        handleMouseUp(event) {\n            const doc = this.bar.el_.ownerDocument;\n            unblockTextSelection();\n            this.removeClass('vjs-sliding');\n            /**\n             * Triggered when the slider is no longer in an active state.\n             *\n             * @event Slider#sliderinactive\n             * @type {Event}\n             */\n            this.trigger('sliderinactive');\n            this.off(doc, 'mousemove', this.handleMouseMove_);\n            this.off(doc, 'mouseup', this.handleMouseUp_);\n            this.off(doc, 'touchmove', this.handleMouseMove_);\n            this.off(doc, 'touchend', this.handleMouseUp_);\n            this.update();\n        }\n\n        /**\n         * Update the progress bar of the `Slider`.\n         *\n         * @return {number}\n         *          The percentage of progress the progress bar represents as a\n         *          number from 0 to 1.\n         */\n        update() {\n            // In VolumeBar init we have a setTimeout for update that pops and update\n            // to the end of the execution stack. The player is destroyed before then\n            // update will cause an error\n            // If there's no bar...\n            if (!this.el_ || !this.bar) {\n                return;\n            }\n\n            // clamp progress between 0 and 1\n            // and only round to four decimal places, as we round to two below\n            const progress = this.getProgress();\n            if (progress === this.progress_) {\n                return progress;\n            }\n            this.progress_ = progress;\n            this.requestNamedAnimationFrame('Slider#update', () => {\n                // Set the new bar width or height\n                const sizeKey = this.vertical() ? 'height' : 'width';\n\n                // Convert to a percentage for css value\n                this.bar.el().style[sizeKey] = (progress * 100).toFixed(2) + '%';\n            });\n            return progress;\n        }\n\n        /**\n         * Get the percentage of the bar that should be filled\n         * but clamped and rounded.\n         *\n         * @return {number}\n         *         percentage filled that the slider is\n         */\n        getProgress() {\n            return Number(clamp(this.getPercent(), 0, 1).toFixed(4));\n        }\n\n        /**\n         * Calculate distance for slider\n         *\n         * @param {Event} event\n         *        The event that caused this function to run.\n         *\n         * @return {number}\n         *         The current position of the Slider.\n         *         - position.x for vertical `Slider`s\n         *         - position.y for horizontal `Slider`s\n         */\n        calculateDistance(event) {\n            const position = getPointerPosition(this.el_, event);\n            if (this.vertical()) {\n                return position.y;\n            }\n            return position.x;\n        }\n\n        /**\n         * Handle a `keydown` event on the `Slider`. Watches for left, right, up, and down\n         * arrow keys. This function will only be called when the slider has focus. See\n         * {@link Slider#handleFocus} and {@link Slider#handleBlur}.\n         *\n         * @param {KeyboardEvent} event\n         *        the `keydown` event that caused this function to run.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            // Left and Down Arrows\n            if (keycode.isEventKey(event, 'Left') || keycode.isEventKey(event, 'Down')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.stepBack();\n\n                // Up and Right Arrows\n            } else if (keycode.isEventKey(event, 'Right') || keycode.isEventKey(event, 'Up')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.stepForward();\n            } else {\n                // Pass keydown handling up for unsupported keys\n                super.handleKeyDown(event);\n            }\n        }\n\n        /**\n         * Listener for click events on slider, used to prevent clicks\n         *   from bubbling up to parent elements like button menus.\n         *\n         * @param {Object} event\n         *        Event that caused this object to run\n         */\n        handleClick(event) {\n            event.stopPropagation();\n            event.preventDefault();\n        }\n\n        /**\n         * Get/set if slider is horizontal for vertical\n         *\n         * @param {boolean} [bool]\n         *        - true if slider is vertical,\n         *        - false is horizontal\n         *\n         * @return {boolean}\n         *         - true if slider is vertical, and getting\n         *         - false if the slider is horizontal, and getting\n         */\n        vertical(bool) {\n            if (bool === undefined) {\n                return this.vertical_ || false;\n            }\n            this.vertical_ = !!bool;\n            if (this.vertical_) {\n                this.addClass('vjs-slider-vertical');\n            } else {\n                this.addClass('vjs-slider-horizontal');\n            }\n        }\n    }\n    Component$1.registerComponent('Slider', Slider);\n\n    /**\n     * @file load-progress-bar.js\n     */\n\n        // get the percent width of a time compared to the total end\n    const percentify = (time, end) => clamp(time / end * 100, 0, 100).toFixed(2) + '%';\n\n    /**\n     * Shows loading progress\n     *\n     * @extends Component\n     */\n    class LoadProgressBar extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.partEls_ = [];\n            this.on(player, 'progress', e => this.update(e));\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            const el = super.createEl('div', {\n                className: 'vjs-load-progress'\n            });\n            const wrapper = createEl('span', {\n                className: 'vjs-control-text'\n            });\n            const loadedText = createEl('span', {\n                textContent: this.localize('Loaded')\n            });\n            const separator = document.createTextNode(': ');\n            this.percentageEl_ = createEl('span', {\n                className: 'vjs-control-text-loaded-percentage',\n                textContent: '0%'\n            });\n            el.appendChild(wrapper);\n            wrapper.appendChild(loadedText);\n            wrapper.appendChild(separator);\n            wrapper.appendChild(this.percentageEl_);\n            return el;\n        }\n        dispose() {\n            this.partEls_ = null;\n            this.percentageEl_ = null;\n            super.dispose();\n        }\n\n        /**\n         * Update progress bar\n         *\n         * @param {Event} [event]\n         *        The `progress` event that caused this function to run.\n         *\n         * @listens Player#progress\n         */\n        update(event) {\n            this.requestNamedAnimationFrame('LoadProgressBar#update', () => {\n                const liveTracker = this.player_.liveTracker;\n                const buffered = this.player_.buffered();\n                const duration = liveTracker && liveTracker.isLive() ? liveTracker.seekableEnd() : this.player_.duration();\n                const bufferedEnd = this.player_.bufferedEnd();\n                const children = this.partEls_;\n                const percent = percentify(bufferedEnd, duration);\n                if (this.percent_ !== percent) {\n                    // update the width of the progress bar\n                    this.el_.style.width = percent;\n                    // update the control-text\n                    textContent(this.percentageEl_, percent);\n                    this.percent_ = percent;\n                }\n\n                // add child elements to represent the individual buffered time ranges\n                for (let i = 0; i < buffered.length; i++) {\n                    const start = buffered.start(i);\n                    const end = buffered.end(i);\n                    let part = children[i];\n                    if (!part) {\n                        part = this.el_.appendChild(createEl());\n                        children[i] = part;\n                    }\n\n                    //  only update if changed\n                    if (part.dataset.start === start && part.dataset.end === end) {\n                        continue;\n                    }\n                    part.dataset.start = start;\n                    part.dataset.end = end;\n\n                    // set the percent based on the width of the progress bar (bufferedEnd)\n                    part.style.left = percentify(start, bufferedEnd);\n                    part.style.width = percentify(end - start, bufferedEnd);\n                }\n\n                // remove unused buffered range elements\n                for (let i = children.length; i > buffered.length; i--) {\n                    this.el_.removeChild(children[i - 1]);\n                }\n                children.length = buffered.length;\n            });\n        }\n    }\n    Component$1.registerComponent('LoadProgressBar', LoadProgressBar);\n\n    /**\n     * @file time-tooltip.js\n     */\n\n    /**\n     * Time tooltips display a time above the progress bar.\n     *\n     * @extends Component\n     */\n    class TimeTooltip extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The {@link Player} that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);\n        }\n\n        /**\n         * Create the time tooltip DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-time-tooltip'\n            }, {\n                'aria-hidden': 'true'\n            });\n        }\n\n        /**\n         * Updates the position of the time tooltip relative to the `SeekBar`.\n         *\n         * @param {Object} seekBarRect\n         *        The `ClientRect` for the {@link SeekBar} element.\n         *\n         * @param {number} seekBarPoint\n         *        A number from 0 to 1, representing a horizontal reference point\n         *        from the left edge of the {@link SeekBar}\n         */\n        update(seekBarRect, seekBarPoint, content) {\n            const tooltipRect = findPosition(this.el_);\n            const playerRect = getBoundingClientRect(this.player_.el());\n            const seekBarPointPx = seekBarRect.width * seekBarPoint;\n\n            // do nothing if either rect isn't available\n            // for example, if the player isn't in the DOM for testing\n            if (!playerRect || !tooltipRect) {\n                return;\n            }\n\n            // This is the space left of the `seekBarPoint` available within the bounds\n            // of the player. We calculate any gap between the left edge of the player\n            // and the left edge of the `SeekBar` and add the number of pixels in the\n            // `SeekBar` before hitting the `seekBarPoint`\n            const spaceLeftOfPoint = seekBarRect.left - playerRect.left + seekBarPointPx;\n\n            // This is the space right of the `seekBarPoint` available within the bounds\n            // of the player. We calculate the number of pixels from the `seekBarPoint`\n            // to the right edge of the `SeekBar` and add to that any gap between the\n            // right edge of the `SeekBar` and the player.\n            const spaceRightOfPoint = seekBarRect.width - seekBarPointPx + (playerRect.right - seekBarRect.right);\n\n            // This is the number of pixels by which the tooltip will need to be pulled\n            // further to the right to center it over the `seekBarPoint`.\n            let pullTooltipBy = tooltipRect.width / 2;\n\n            // Adjust the `pullTooltipBy` distance to the left or right depending on\n            // the results of the space calculations above.\n            if (spaceLeftOfPoint < pullTooltipBy) {\n                pullTooltipBy += pullTooltipBy - spaceLeftOfPoint;\n            } else if (spaceRightOfPoint < pullTooltipBy) {\n                pullTooltipBy = spaceRightOfPoint;\n            }\n\n            // Due to the imprecision of decimal/ratio based calculations and varying\n            // rounding behaviors, there are cases where the spacing adjustment is off\n            // by a pixel or two. This adds insurance to these calculations.\n            if (pullTooltipBy < 0) {\n                pullTooltipBy = 0;\n            } else if (pullTooltipBy > tooltipRect.width) {\n                pullTooltipBy = tooltipRect.width;\n            }\n\n            // prevent small width fluctuations within 0.4px from\n            // changing the value below.\n            // This really helps for live to prevent the play\n            // progress time tooltip from jittering\n            pullTooltipBy = Math.round(pullTooltipBy);\n            this.el_.style.right = `-${pullTooltipBy}px`;\n            this.write(content);\n        }\n\n        /**\n         * Write the time to the tooltip DOM element.\n         *\n         * @param {string} content\n         *        The formatted time for the tooltip.\n         */\n        write(content) {\n            textContent(this.el_, content);\n        }\n\n        /**\n         * Updates the position of the time tooltip relative to the `SeekBar`.\n         *\n         * @param {Object} seekBarRect\n         *        The `ClientRect` for the {@link SeekBar} element.\n         *\n         * @param {number} seekBarPoint\n         *        A number from 0 to 1, representing a horizontal reference point\n         *        from the left edge of the {@link SeekBar}\n         *\n         * @param {number} time\n         *        The time to update the tooltip to, not used during live playback\n         *\n         * @param {Function} cb\n         *        A function that will be called during the request animation frame\n         *        for tooltips that need to do additional animations from the default\n         */\n        updateTime(seekBarRect, seekBarPoint, time, cb) {\n            this.requestNamedAnimationFrame('TimeTooltip#updateTime', () => {\n                let content;\n                const duration = this.player_.duration();\n                if (this.player_.liveTracker && this.player_.liveTracker.isLive()) {\n                    const liveWindow = this.player_.liveTracker.liveWindow();\n                    const secondsBehind = liveWindow - seekBarPoint * liveWindow;\n                    content = (secondsBehind < 1 ? '' : '-') + formatTime(secondsBehind, liveWindow);\n                } else {\n                    content = formatTime(time, duration);\n                }\n                this.update(seekBarRect, seekBarPoint, content);\n                if (cb) {\n                    cb();\n                }\n            });\n        }\n    }\n    Component$1.registerComponent('TimeTooltip', TimeTooltip);\n\n    /**\n     * @file play-progress-bar.js\n     */\n\n    /**\n     * Used by {@link SeekBar} to display media playback progress as part of the\n     * {@link ProgressControl}.\n     *\n     * @extends Component\n     */\n    class PlayProgressBar extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The {@link Player} that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);\n        }\n\n        /**\n         * Create the the DOM element for this class.\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-play-progress vjs-slider-bar'\n            }, {\n                'aria-hidden': 'true'\n            });\n        }\n\n        /**\n         * Enqueues updates to its own DOM as well as the DOM of its\n         * {@link TimeTooltip} child.\n         *\n         * @param {Object} seekBarRect\n         *        The `ClientRect` for the {@link SeekBar} element.\n         *\n         * @param {number} seekBarPoint\n         *        A number from 0 to 1, representing a horizontal reference point\n         *        from the left edge of the {@link SeekBar}\n         */\n        update(seekBarRect, seekBarPoint) {\n            const timeTooltip = this.getChild('timeTooltip');\n            if (!timeTooltip) {\n                return;\n            }\n            const time = this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();\n            timeTooltip.updateTime(seekBarRect, seekBarPoint, time);\n        }\n    }\n\n    /**\n     * Default options for {@link PlayProgressBar}.\n     *\n     * @type {Object}\n     * @private\n     */\n    PlayProgressBar.prototype.options_ = {\n        children: []\n    };\n\n    // Time tooltips should not be added to a player on mobile devices\n    if (!IS_IOS && !IS_ANDROID) {\n        PlayProgressBar.prototype.options_.children.push('timeTooltip');\n    }\n    Component$1.registerComponent('PlayProgressBar', PlayProgressBar);\n\n    /**\n     * @file mouse-time-display.js\n     */\n\n    /**\n     * The {@link MouseTimeDisplay} component tracks mouse movement over the\n     * {@link ProgressControl}. It displays an indicator and a {@link TimeTooltip}\n     * indicating the time which is represented by a given point in the\n     * {@link ProgressControl}.\n     *\n     * @extends Component\n     */\n    class MouseTimeDisplay extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The {@link Player} that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);\n        }\n\n        /**\n         * Create the DOM element for this class.\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-mouse-display'\n            });\n        }\n\n        /**\n         * Enqueues updates to its own DOM as well as the DOM of its\n         * {@link TimeTooltip} child.\n         *\n         * @param {Object} seekBarRect\n         *        The `ClientRect` for the {@link SeekBar} element.\n         *\n         * @param {number} seekBarPoint\n         *        A number from 0 to 1, representing a horizontal reference point\n         *        from the left edge of the {@link SeekBar}\n         */\n        update(seekBarRect, seekBarPoint) {\n            const time = seekBarPoint * this.player_.duration();\n            this.getChild('timeTooltip').updateTime(seekBarRect, seekBarPoint, time, () => {\n                this.el_.style.left = `${seekBarRect.width * seekBarPoint}px`;\n            });\n        }\n    }\n\n    /**\n     * Default options for `MouseTimeDisplay`\n     *\n     * @type {Object}\n     * @private\n     */\n    MouseTimeDisplay.prototype.options_ = {\n        children: ['timeTooltip']\n    };\n    Component$1.registerComponent('MouseTimeDisplay', MouseTimeDisplay);\n\n    /**\n     * @file seek-bar.js\n     */\n\n        // The number of seconds the `step*` functions move the timeline.\n    const STEP_SECONDS = 5;\n\n    // The multiplier of STEP_SECONDS that PgUp/PgDown move the timeline.\n    const PAGE_KEY_MULTIPLIER = 12;\n\n    /**\n     * Seek bar and container for the progress bars. Uses {@link PlayProgressBar}\n     * as its `bar`.\n     *\n     * @extends Slider\n     */\n    class SeekBar extends Slider {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.setEventHandlers_();\n        }\n\n        /**\n         * Sets the event handlers\n         *\n         * @private\n         */\n        setEventHandlers_() {\n            this.update_ = bind_(this, this.update);\n            this.update = throttle(this.update_, UPDATE_REFRESH_INTERVAL);\n            this.on(this.player_, ['ended', 'durationchange', 'timeupdate'], this.update);\n            if (this.player_.liveTracker) {\n                this.on(this.player_.liveTracker, 'liveedgechange', this.update);\n            }\n\n            // when playing, let's ensure we smoothly update the play progress bar\n            // via an interval\n            this.updateInterval = null;\n            this.enableIntervalHandler_ = e => this.enableInterval_(e);\n            this.disableIntervalHandler_ = e => this.disableInterval_(e);\n            this.on(this.player_, ['playing'], this.enableIntervalHandler_);\n            this.on(this.player_, ['ended', 'pause', 'waiting'], this.disableIntervalHandler_);\n\n            // we don't need to update the play progress if the document is hidden,\n            // also, this causes the CPU to spike and eventually crash the page on IE11.\n            if ('hidden' in document && 'visibilityState' in document) {\n                this.on(document, 'visibilitychange', this.toggleVisibility_);\n            }\n        }\n        toggleVisibility_(e) {\n            if (document.visibilityState === 'hidden') {\n                this.cancelNamedAnimationFrame('SeekBar#update');\n                this.cancelNamedAnimationFrame('Slider#update');\n                this.disableInterval_(e);\n            } else {\n                if (!this.player_.ended() && !this.player_.paused()) {\n                    this.enableInterval_();\n                }\n\n                // we just switched back to the page and someone may be looking, so, update ASAP\n                this.update();\n            }\n        }\n        enableInterval_() {\n            if (this.updateInterval) {\n                return;\n            }\n            this.updateInterval = this.setInterval(this.update, UPDATE_REFRESH_INTERVAL);\n        }\n        disableInterval_(e) {\n            if (this.player_.liveTracker && this.player_.liveTracker.isLive() && e && e.type !== 'ended') {\n                return;\n            }\n            if (!this.updateInterval) {\n                return;\n            }\n            this.clearInterval(this.updateInterval);\n            this.updateInterval = null;\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-progress-holder'\n            }, {\n                'aria-label': this.localize('Progress Bar')\n            });\n        }\n\n        /**\n         * This function updates the play progress bar and accessibility\n         * attributes to whatever is passed in.\n         *\n         * @param {Event} [event]\n         *        The `timeupdate` or `ended` event that caused this to run.\n         *\n         * @listens Player#timeupdate\n         *\n         * @return {number}\n         *          The current percent at a number from 0-1\n         */\n        update(event) {\n            // ignore updates while the tab is hidden\n            if (document.visibilityState === 'hidden') {\n                return;\n            }\n            const percent = super.update();\n            this.requestNamedAnimationFrame('SeekBar#update', () => {\n                const currentTime = this.player_.ended() ? this.player_.duration() : this.getCurrentTime_();\n                const liveTracker = this.player_.liveTracker;\n                let duration = this.player_.duration();\n                if (liveTracker && liveTracker.isLive()) {\n                    duration = this.player_.liveTracker.liveCurrentTime();\n                }\n                if (this.percent_ !== percent) {\n                    // machine readable value of progress bar (percentage complete)\n                    this.el_.setAttribute('aria-valuenow', (percent * 100).toFixed(2));\n                    this.percent_ = percent;\n                }\n                if (this.currentTime_ !== currentTime || this.duration_ !== duration) {\n                    // human readable value of progress bar (time complete)\n                    this.el_.setAttribute('aria-valuetext', this.localize('progress bar timing: currentTime={1} duration={2}', [formatTime(currentTime, duration), formatTime(duration, duration)], '{1} of {2}'));\n                    this.currentTime_ = currentTime;\n                    this.duration_ = duration;\n                }\n\n                // update the progress bar time tooltip with the current time\n                if (this.bar) {\n                    this.bar.update(getBoundingClientRect(this.el()), this.getProgress());\n                }\n            });\n            return percent;\n        }\n\n        /**\n         * Prevent liveThreshold from causing seeks to seem like they\n         * are not happening from a user perspective.\n         *\n         * @param {number} ct\n         *        current time to seek to\n         */\n        userSeek_(ct) {\n            if (this.player_.liveTracker && this.player_.liveTracker.isLive()) {\n                this.player_.liveTracker.nextSeekedFromUser();\n            }\n            this.player_.currentTime(ct);\n        }\n\n        /**\n         * Get the value of current time but allows for smooth scrubbing,\n         * when player can't keep up.\n         *\n         * @return {number}\n         *         The current time value to display\n         *\n         * @private\n         */\n        getCurrentTime_() {\n            return this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();\n        }\n\n        /**\n         * Get the percentage of media played so far.\n         *\n         * @return {number}\n         *         The percentage of media played so far (0 to 1).\n         */\n        getPercent() {\n            const currentTime = this.getCurrentTime_();\n            let percent;\n            const liveTracker = this.player_.liveTracker;\n            if (liveTracker && liveTracker.isLive()) {\n                percent = (currentTime - liveTracker.seekableStart()) / liveTracker.liveWindow();\n\n                // prevent the percent from changing at the live edge\n                if (liveTracker.atLiveEdge()) {\n                    percent = 1;\n                }\n            } else {\n                percent = currentTime / this.player_.duration();\n            }\n            return percent;\n        }\n\n        /**\n         * Handle mouse down on seek bar\n         *\n         * @param {MouseEvent} event\n         *        The `mousedown` event that caused this to run.\n         *\n         * @listens mousedown\n         */\n        handleMouseDown(event) {\n            if (!isSingleLeftClick(event)) {\n                return;\n            }\n\n            // Stop event propagation to prevent double fire in progress-control.js\n            event.stopPropagation();\n            this.videoWasPlaying = !this.player_.paused();\n            this.player_.pause();\n            super.handleMouseDown(event);\n        }\n\n        /**\n         * Handle mouse move on seek bar\n         *\n         * @param {MouseEvent} event\n         *        The `mousemove` event that caused this to run.\n         * @param {boolean} mouseDown this is a flag that should be set to true if `handleMouseMove` is called directly. It allows us to skip things that should not happen if coming from mouse down but should happen on regular mouse move handler. Defaults to false\n         *\n         * @listens mousemove\n         */\n        handleMouseMove(event, mouseDown = false) {\n            if (!isSingleLeftClick(event)) {\n                return;\n            }\n            if (!mouseDown && !this.player_.scrubbing()) {\n                this.player_.scrubbing(true);\n            }\n            let newTime;\n            const distance = this.calculateDistance(event);\n            const liveTracker = this.player_.liveTracker;\n            if (!liveTracker || !liveTracker.isLive()) {\n                newTime = distance * this.player_.duration();\n\n                // Don't let video end while scrubbing.\n                if (newTime === this.player_.duration()) {\n                    newTime = newTime - 0.1;\n                }\n            } else {\n                if (distance >= 0.99) {\n                    liveTracker.seekToLiveEdge();\n                    return;\n                }\n                const seekableStart = liveTracker.seekableStart();\n                const seekableEnd = liveTracker.liveCurrentTime();\n                newTime = seekableStart + distance * liveTracker.liveWindow();\n\n                // Don't let video end while scrubbing.\n                if (newTime >= seekableEnd) {\n                    newTime = seekableEnd;\n                }\n\n                // Compensate for precision differences so that currentTime is not less\n                // than seekable start\n                if (newTime <= seekableStart) {\n                    newTime = seekableStart + 0.1;\n                }\n\n                // On android seekableEnd can be Infinity sometimes,\n                // this will cause newTime to be Infinity, which is\n                // not a valid currentTime.\n                if (newTime === Infinity) {\n                    return;\n                }\n            }\n\n            // Set new time (tell player to seek to new time)\n            this.userSeek_(newTime);\n        }\n        enable() {\n            super.enable();\n            const mouseTimeDisplay = this.getChild('mouseTimeDisplay');\n            if (!mouseTimeDisplay) {\n                return;\n            }\n            mouseTimeDisplay.show();\n        }\n        disable() {\n            super.disable();\n            const mouseTimeDisplay = this.getChild('mouseTimeDisplay');\n            if (!mouseTimeDisplay) {\n                return;\n            }\n            mouseTimeDisplay.hide();\n        }\n\n        /**\n         * Handle mouse up on seek bar\n         *\n         * @param {MouseEvent} event\n         *        The `mouseup` event that caused this to run.\n         *\n         * @listens mouseup\n         */\n        handleMouseUp(event) {\n            super.handleMouseUp(event);\n\n            // Stop event propagation to prevent double fire in progress-control.js\n            if (event) {\n                event.stopPropagation();\n            }\n            this.player_.scrubbing(false);\n\n            /**\n             * Trigger timeupdate because we're done seeking and the time has changed.\n             * This is particularly useful for if the player is paused to time the time displays.\n             *\n             * @event Tech#timeupdate\n             * @type {Event}\n             */\n            this.player_.trigger({\n                type: 'timeupdate',\n                target: this,\n                manuallyTriggered: true\n            });\n            if (this.videoWasPlaying) {\n                silencePromise(this.player_.play());\n            } else {\n                // We're done seeking and the time has changed.\n                // If the player is paused, make sure we display the correct time on the seek bar.\n                this.update_();\n            }\n        }\n\n        /**\n         * Move more quickly fast forward for keyboard-only users\n         */\n        stepForward() {\n            this.userSeek_(this.player_.currentTime() + STEP_SECONDS);\n        }\n\n        /**\n         * Move more quickly rewind for keyboard-only users\n         */\n        stepBack() {\n            this.userSeek_(this.player_.currentTime() - STEP_SECONDS);\n        }\n\n        /**\n         * Toggles the playback state of the player\n         * This gets called when enter or space is used on the seekbar\n         *\n         * @param {KeyboardEvent} event\n         *        The `keydown` event that caused this function to be called\n         *\n         */\n        handleAction(event) {\n            if (this.player_.paused()) {\n                this.player_.play();\n            } else {\n                this.player_.pause();\n            }\n        }\n\n        /**\n         * Called when this SeekBar has focus and a key gets pressed down.\n         * Supports the following keys:\n         *\n         *   Space or Enter key fire a click event\n         *   Home key moves to start of the timeline\n         *   End key moves to end of the timeline\n         *   Digit \"0\" through \"9\" keys move to 0%, 10% ... 80%, 90% of the timeline\n         *   PageDown key moves back a larger step than ArrowDown\n         *   PageUp key moves forward a large step\n         *\n         * @param {KeyboardEvent} event\n         *        The `keydown` event that caused this function to be called.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            const liveTracker = this.player_.liveTracker;\n            if (keycode.isEventKey(event, 'Space') || keycode.isEventKey(event, 'Enter')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.handleAction(event);\n            } else if (keycode.isEventKey(event, 'Home')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.userSeek_(0);\n            } else if (keycode.isEventKey(event, 'End')) {\n                event.preventDefault();\n                event.stopPropagation();\n                if (liveTracker && liveTracker.isLive()) {\n                    this.userSeek_(liveTracker.liveCurrentTime());\n                } else {\n                    this.userSeek_(this.player_.duration());\n                }\n            } else if (/^[0-9]$/.test(keycode(event))) {\n                event.preventDefault();\n                event.stopPropagation();\n                const gotoFraction = (keycode.codes[keycode(event)] - keycode.codes['0']) * 10.0 / 100.0;\n                if (liveTracker && liveTracker.isLive()) {\n                    this.userSeek_(liveTracker.seekableStart() + liveTracker.liveWindow() * gotoFraction);\n                } else {\n                    this.userSeek_(this.player_.duration() * gotoFraction);\n                }\n            } else if (keycode.isEventKey(event, 'PgDn')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.userSeek_(this.player_.currentTime() - STEP_SECONDS * PAGE_KEY_MULTIPLIER);\n            } else if (keycode.isEventKey(event, 'PgUp')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.userSeek_(this.player_.currentTime() + STEP_SECONDS * PAGE_KEY_MULTIPLIER);\n            } else {\n                // Pass keydown handling up for unsupported keys\n                super.handleKeyDown(event);\n            }\n        }\n        dispose() {\n            this.disableInterval_();\n            this.off(this.player_, ['ended', 'durationchange', 'timeupdate'], this.update);\n            if (this.player_.liveTracker) {\n                this.off(this.player_.liveTracker, 'liveedgechange', this.update);\n            }\n            this.off(this.player_, ['playing'], this.enableIntervalHandler_);\n            this.off(this.player_, ['ended', 'pause', 'waiting'], this.disableIntervalHandler_);\n\n            // we don't need to update the play progress if the document is hidden,\n            // also, this causes the CPU to spike and eventually crash the page on IE11.\n            if ('hidden' in document && 'visibilityState' in document) {\n                this.off(document, 'visibilitychange', this.toggleVisibility_);\n            }\n            super.dispose();\n        }\n    }\n\n    /**\n     * Default options for the `SeekBar`\n     *\n     * @type {Object}\n     * @private\n     */\n    SeekBar.prototype.options_ = {\n        children: ['loadProgressBar', 'playProgressBar'],\n        barName: 'playProgressBar'\n    };\n\n    // MouseTimeDisplay tooltips should not be added to a player on mobile devices\n    if (!IS_IOS && !IS_ANDROID) {\n        SeekBar.prototype.options_.children.splice(1, 0, 'mouseTimeDisplay');\n    }\n    Component$1.registerComponent('SeekBar', SeekBar);\n\n    /**\n     * @file progress-control.js\n     */\n\n    /**\n     * The Progress Control component contains the seek bar, load progress,\n     * and play progress.\n     *\n     * @extends Component\n     */\n    class ProgressControl extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.handleMouseMove = throttle(bind_(this, this.handleMouseMove), UPDATE_REFRESH_INTERVAL);\n            this.throttledHandleMouseSeek = throttle(bind_(this, this.handleMouseSeek), UPDATE_REFRESH_INTERVAL);\n            this.handleMouseUpHandler_ = e => this.handleMouseUp(e);\n            this.handleMouseDownHandler_ = e => this.handleMouseDown(e);\n            this.enable();\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-progress-control vjs-control'\n            });\n        }\n\n        /**\n         * When the mouse moves over the `ProgressControl`, the pointer position\n         * gets passed down to the `MouseTimeDisplay` component.\n         *\n         * @param {Event} event\n         *        The `mousemove` event that caused this function to run.\n         *\n         * @listen mousemove\n         */\n        handleMouseMove(event) {\n            const seekBar = this.getChild('seekBar');\n            if (!seekBar) {\n                return;\n            }\n            const playProgressBar = seekBar.getChild('playProgressBar');\n            const mouseTimeDisplay = seekBar.getChild('mouseTimeDisplay');\n            if (!playProgressBar && !mouseTimeDisplay) {\n                return;\n            }\n            const seekBarEl = seekBar.el();\n            const seekBarRect = findPosition(seekBarEl);\n            let seekBarPoint = getPointerPosition(seekBarEl, event).x;\n\n            // The default skin has a gap on either side of the `SeekBar`. This means\n            // that it's possible to trigger this behavior outside the boundaries of\n            // the `SeekBar`. This ensures we stay within it at all times.\n            seekBarPoint = clamp(seekBarPoint, 0, 1);\n            if (mouseTimeDisplay) {\n                mouseTimeDisplay.update(seekBarRect, seekBarPoint);\n            }\n            if (playProgressBar) {\n                playProgressBar.update(seekBarRect, seekBar.getProgress());\n            }\n        }\n\n        /**\n         * A throttled version of the {@link ProgressControl#handleMouseSeek} listener.\n         *\n         * @method ProgressControl#throttledHandleMouseSeek\n         * @param {Event} event\n         *        The `mousemove` event that caused this function to run.\n         *\n         * @listen mousemove\n         * @listen touchmove\n         */\n\n        /**\n         * Handle `mousemove` or `touchmove` events on the `ProgressControl`.\n         *\n         * @param {Event} event\n         *        `mousedown` or `touchstart` event that triggered this function\n         *\n         * @listens mousemove\n         * @listens touchmove\n         */\n        handleMouseSeek(event) {\n            const seekBar = this.getChild('seekBar');\n            if (seekBar) {\n                seekBar.handleMouseMove(event);\n            }\n        }\n\n        /**\n         * Are controls are currently enabled for this progress control.\n         *\n         * @return {boolean}\n         *         true if controls are enabled, false otherwise\n         */\n        enabled() {\n            return this.enabled_;\n        }\n\n        /**\n         * Disable all controls on the progress control and its children\n         */\n        disable() {\n            this.children().forEach(child => child.disable && child.disable());\n            if (!this.enabled()) {\n                return;\n            }\n            this.off(['mousedown', 'touchstart'], this.handleMouseDownHandler_);\n            this.off(this.el_, 'mousemove', this.handleMouseMove);\n            this.removeListenersAddedOnMousedownAndTouchstart();\n            this.addClass('disabled');\n            this.enabled_ = false;\n\n            // Restore normal playback state if controls are disabled while scrubbing\n            if (this.player_.scrubbing()) {\n                const seekBar = this.getChild('seekBar');\n                this.player_.scrubbing(false);\n                if (seekBar.videoWasPlaying) {\n                    silencePromise(this.player_.play());\n                }\n            }\n        }\n\n        /**\n         * Enable all controls on the progress control and its children\n         */\n        enable() {\n            this.children().forEach(child => child.enable && child.enable());\n            if (this.enabled()) {\n                return;\n            }\n            this.on(['mousedown', 'touchstart'], this.handleMouseDownHandler_);\n            this.on(this.el_, 'mousemove', this.handleMouseMove);\n            this.removeClass('disabled');\n            this.enabled_ = true;\n        }\n\n        /**\n         * Cleanup listeners after the user finishes interacting with the progress controls\n         */\n        removeListenersAddedOnMousedownAndTouchstart() {\n            const doc = this.el_.ownerDocument;\n            this.off(doc, 'mousemove', this.throttledHandleMouseSeek);\n            this.off(doc, 'touchmove', this.throttledHandleMouseSeek);\n            this.off(doc, 'mouseup', this.handleMouseUpHandler_);\n            this.off(doc, 'touchend', this.handleMouseUpHandler_);\n        }\n\n        /**\n         * Handle `mousedown` or `touchstart` events on the `ProgressControl`.\n         *\n         * @param {Event} event\n         *        `mousedown` or `touchstart` event that triggered this function\n         *\n         * @listens mousedown\n         * @listens touchstart\n         */\n        handleMouseDown(event) {\n            const doc = this.el_.ownerDocument;\n            const seekBar = this.getChild('seekBar');\n            if (seekBar) {\n                seekBar.handleMouseDown(event);\n            }\n            this.on(doc, 'mousemove', this.throttledHandleMouseSeek);\n            this.on(doc, 'touchmove', this.throttledHandleMouseSeek);\n            this.on(doc, 'mouseup', this.handleMouseUpHandler_);\n            this.on(doc, 'touchend', this.handleMouseUpHandler_);\n        }\n\n        /**\n         * Handle `mouseup` or `touchend` events on the `ProgressControl`.\n         *\n         * @param {Event} event\n         *        `mouseup` or `touchend` event that triggered this function.\n         *\n         * @listens touchend\n         * @listens mouseup\n         */\n        handleMouseUp(event) {\n            const seekBar = this.getChild('seekBar');\n            if (seekBar) {\n                seekBar.handleMouseUp(event);\n            }\n            this.removeListenersAddedOnMousedownAndTouchstart();\n        }\n    }\n\n    /**\n     * Default options for `ProgressControl`\n     *\n     * @type {Object}\n     * @private\n     */\n    ProgressControl.prototype.options_ = {\n        children: ['seekBar']\n    };\n    Component$1.registerComponent('ProgressControl', ProgressControl);\n\n    /**\n     * @file picture-in-picture-toggle.js\n     */\n\n    /**\n     * Toggle Picture-in-Picture mode\n     *\n     * @extends Button\n     */\n    class PictureInPictureToggle extends Button {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @listens Player#enterpictureinpicture\n         * @listens Player#leavepictureinpicture\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.on(player, ['enterpictureinpicture', 'leavepictureinpicture'], e => this.handlePictureInPictureChange(e));\n            this.on(player, ['disablepictureinpicturechanged', 'loadedmetadata'], e => this.handlePictureInPictureEnabledChange(e));\n            this.on(player, ['loadedmetadata', 'audioonlymodechange', 'audiopostermodechange'], () => {\n                // This audio detection will not detect HLS or DASH audio-only streams because there was no reliable way to detect them at the time\n                const isSourceAudio = player.currentType().substring(0, 5) === 'audio';\n                if (isSourceAudio || player.audioPosterMode() || player.audioOnlyMode()) {\n                    if (player.isInPictureInPicture()) {\n                        player.exitPictureInPicture();\n                    }\n                    this.hide();\n                } else {\n                    this.show();\n                }\n            });\n\n            // TODO: Deactivate button on player emptied event.\n            this.disable();\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-picture-in-picture-control ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * Enables or disables button based on availability of a Picture-In-Picture mode.\n         *\n         * Enabled if\n         * - `player.options().enableDocumentPictureInPicture` is true and\n         *   window.documentPictureInPicture is available; or\n         * - `player.disablePictureInPicture()` is false and\n         *   element.requestPictureInPicture is available\n         */\n        handlePictureInPictureEnabledChange() {\n            if (document.pictureInPictureEnabled && this.player_.disablePictureInPicture() === false || this.player_.options_.enableDocumentPictureInPicture && 'documentPictureInPicture' in window) {\n                this.enable();\n            } else {\n                this.disable();\n            }\n        }\n\n        /**\n         * Handles enterpictureinpicture and leavepictureinpicture on the player and change control text accordingly.\n         *\n         * @param {Event} [event]\n         *        The {@link Player#enterpictureinpicture} or {@link Player#leavepictureinpicture} event that caused this function to be\n         *        called.\n         *\n         * @listens Player#enterpictureinpicture\n         * @listens Player#leavepictureinpicture\n         */\n        handlePictureInPictureChange(event) {\n            if (this.player_.isInPictureInPicture()) {\n                this.controlText('Exit Picture-in-Picture');\n            } else {\n                this.controlText('Picture-in-Picture');\n            }\n            this.handlePictureInPictureEnabledChange();\n        }\n\n        /**\n         * This gets called when an `PictureInPictureToggle` is \"clicked\". See\n         * {@link ClickableComponent} for more detailed information on what a click can be.\n         *\n         * @param {Event} [event]\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            if (!this.player_.isInPictureInPicture()) {\n                this.player_.requestPictureInPicture();\n            } else {\n                this.player_.exitPictureInPicture();\n            }\n        }\n    }\n\n    /**\n     * The text that should display over the `PictureInPictureToggle`s controls. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    PictureInPictureToggle.prototype.controlText_ = 'Picture-in-Picture';\n    Component$1.registerComponent('PictureInPictureToggle', PictureInPictureToggle);\n\n    /**\n     * @file fullscreen-toggle.js\n     */\n\n    /**\n     * Toggle fullscreen video\n     *\n     * @extends Button\n     */\n    class FullscreenToggle extends Button {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.on(player, 'fullscreenchange', e => this.handleFullscreenChange(e));\n            if (document[player.fsApi_.fullscreenEnabled] === false) {\n                this.disable();\n            }\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-fullscreen-control ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * Handles fullscreenchange on the player and change control text accordingly.\n         *\n         * @param {Event} [event]\n         *        The {@link Player#fullscreenchange} event that caused this function to be\n         *        called.\n         *\n         * @listens Player#fullscreenchange\n         */\n        handleFullscreenChange(event) {\n            if (this.player_.isFullscreen()) {\n                this.controlText('Exit Fullscreen');\n            } else {\n                this.controlText('Fullscreen');\n            }\n        }\n\n        /**\n         * This gets called when an `FullscreenToggle` is \"clicked\". See\n         * {@link ClickableComponent} for more detailed information on what a click can be.\n         *\n         * @param {Event} [event]\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            if (!this.player_.isFullscreen()) {\n                this.player_.requestFullscreen();\n            } else {\n                this.player_.exitFullscreen();\n            }\n        }\n    }\n\n    /**\n     * The text that should display over the `FullscreenToggle`s controls. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    FullscreenToggle.prototype.controlText_ = 'Fullscreen';\n    Component$1.registerComponent('FullscreenToggle', FullscreenToggle);\n\n    /**\n     * Check if volume control is supported and if it isn't hide the\n     * `Component` that was passed  using the `vjs-hidden` class.\n     *\n     * @param { import('../../component').default } self\n     *        The component that should be hidden if volume is unsupported\n     *\n     * @param { import('../../player').default } player\n     *        A reference to the player\n     *\n     * @private\n     */\n    const checkVolumeSupport = function (self, player) {\n        // hide volume controls when they're not supported by the current tech\n        if (player.tech_ && !player.tech_.featuresVolumeControl) {\n            self.addClass('vjs-hidden');\n        }\n        self.on(player, 'loadstart', function () {\n            if (!player.tech_.featuresVolumeControl) {\n                self.addClass('vjs-hidden');\n            } else {\n                self.removeClass('vjs-hidden');\n            }\n        });\n    };\n\n    /**\n     * @file volume-level.js\n     */\n\n    /**\n     * Shows volume level\n     *\n     * @extends Component\n     */\n    class VolumeLevel extends Component$1 {\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            const el = super.createEl('div', {\n                className: 'vjs-volume-level'\n            });\n            el.appendChild(super.createEl('span', {\n                className: 'vjs-control-text'\n            }));\n            return el;\n        }\n    }\n    Component$1.registerComponent('VolumeLevel', VolumeLevel);\n\n    /**\n     * @file volume-level-tooltip.js\n     */\n\n    /**\n     * Volume level tooltips display a volume above or side by side the volume bar.\n     *\n     * @extends Component\n     */\n    class VolumeLevelTooltip extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The {@link Player} that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);\n        }\n\n        /**\n         * Create the volume tooltip DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-volume-tooltip'\n            }, {\n                'aria-hidden': 'true'\n            });\n        }\n\n        /**\n         * Updates the position of the tooltip relative to the `VolumeBar` and\n         * its content text.\n         *\n         * @param {Object} rangeBarRect\n         *        The `ClientRect` for the {@link VolumeBar} element.\n         *\n         * @param {number} rangeBarPoint\n         *        A number from 0 to 1, representing a horizontal/vertical reference point\n         *        from the left edge of the {@link VolumeBar}\n         *\n         * @param {boolean} vertical\n         *        Referees to the Volume control position\n         *        in the control bar{@link VolumeControl}\n         *\n         */\n        update(rangeBarRect, rangeBarPoint, vertical, content) {\n            if (!vertical) {\n                const tooltipRect = getBoundingClientRect(this.el_);\n                const playerRect = getBoundingClientRect(this.player_.el());\n                const volumeBarPointPx = rangeBarRect.width * rangeBarPoint;\n                if (!playerRect || !tooltipRect) {\n                    return;\n                }\n                const spaceLeftOfPoint = rangeBarRect.left - playerRect.left + volumeBarPointPx;\n                const spaceRightOfPoint = rangeBarRect.width - volumeBarPointPx + (playerRect.right - rangeBarRect.right);\n                let pullTooltipBy = tooltipRect.width / 2;\n                if (spaceLeftOfPoint < pullTooltipBy) {\n                    pullTooltipBy += pullTooltipBy - spaceLeftOfPoint;\n                } else if (spaceRightOfPoint < pullTooltipBy) {\n                    pullTooltipBy = spaceRightOfPoint;\n                }\n                if (pullTooltipBy < 0) {\n                    pullTooltipBy = 0;\n                } else if (pullTooltipBy > tooltipRect.width) {\n                    pullTooltipBy = tooltipRect.width;\n                }\n                this.el_.style.right = `-${pullTooltipBy}px`;\n            }\n            this.write(`${content}%`);\n        }\n\n        /**\n         * Write the volume to the tooltip DOM element.\n         *\n         * @param {string} content\n         *        The formatted volume for the tooltip.\n         */\n        write(content) {\n            textContent(this.el_, content);\n        }\n\n        /**\n         * Updates the position of the volume tooltip relative to the `VolumeBar`.\n         *\n         * @param {Object} rangeBarRect\n         *        The `ClientRect` for the {@link VolumeBar} element.\n         *\n         * @param {number} rangeBarPoint\n         *        A number from 0 to 1, representing a horizontal/vertical reference point\n         *        from the left edge of the {@link VolumeBar}\n         *\n         * @param {boolean} vertical\n         *        Referees to the Volume control position\n         *        in the control bar{@link VolumeControl}\n         *\n         * @param {number} volume\n         *        The volume level to update the tooltip to\n         *\n         * @param {Function} cb\n         *        A function that will be called during the request animation frame\n         *        for tooltips that need to do additional animations from the default\n         */\n        updateVolume(rangeBarRect, rangeBarPoint, vertical, volume, cb) {\n            this.requestNamedAnimationFrame('VolumeLevelTooltip#updateVolume', () => {\n                this.update(rangeBarRect, rangeBarPoint, vertical, volume.toFixed(0));\n                if (cb) {\n                    cb();\n                }\n            });\n        }\n    }\n    Component$1.registerComponent('VolumeLevelTooltip', VolumeLevelTooltip);\n\n    /**\n     * @file mouse-volume-level-display.js\n     */\n\n    /**\n     * The {@link MouseVolumeLevelDisplay} component tracks mouse movement over the\n     * {@link VolumeControl}. It displays an indicator and a {@link VolumeLevelTooltip}\n     * indicating the volume level which is represented by a given point in the\n     * {@link VolumeBar}.\n     *\n     * @extends Component\n     */\n    class MouseVolumeLevelDisplay extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The {@link Player} that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);\n        }\n\n        /**\n         * Create the DOM element for this class.\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-mouse-display'\n            });\n        }\n\n        /**\n         * Enquires updates to its own DOM as well as the DOM of its\n         * {@link VolumeLevelTooltip} child.\n         *\n         * @param {Object} rangeBarRect\n         *        The `ClientRect` for the {@link VolumeBar} element.\n         *\n         * @param {number} rangeBarPoint\n         *        A number from 0 to 1, representing a horizontal/vertical reference point\n         *        from the left edge of the {@link VolumeBar}\n         *\n         * @param {boolean} vertical\n         *        Referees to the Volume control position\n         *        in the control bar{@link VolumeControl}\n         *\n         */\n        update(rangeBarRect, rangeBarPoint, vertical) {\n            const volume = 100 * rangeBarPoint;\n            this.getChild('volumeLevelTooltip').updateVolume(rangeBarRect, rangeBarPoint, vertical, volume, () => {\n                if (vertical) {\n                    this.el_.style.bottom = `${rangeBarRect.height * rangeBarPoint}px`;\n                } else {\n                    this.el_.style.left = `${rangeBarRect.width * rangeBarPoint}px`;\n                }\n            });\n        }\n    }\n\n    /**\n     * Default options for `MouseVolumeLevelDisplay`\n     *\n     * @type {Object}\n     * @private\n     */\n    MouseVolumeLevelDisplay.prototype.options_ = {\n        children: ['volumeLevelTooltip']\n    };\n    Component$1.registerComponent('MouseVolumeLevelDisplay', MouseVolumeLevelDisplay);\n\n    /**\n     * @file volume-bar.js\n     */\n\n    /**\n     * The bar that contains the volume level and can be clicked on to adjust the level\n     *\n     * @extends Slider\n     */\n    class VolumeBar extends Slider {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.on('slideractive', e => this.updateLastVolume_(e));\n            this.on(player, 'volumechange', e => this.updateARIAAttributes(e));\n            player.ready(() => this.updateARIAAttributes());\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-volume-bar vjs-slider-bar'\n            }, {\n                'aria-label': this.localize('Volume Level'),\n                'aria-live': 'polite'\n            });\n        }\n\n        /**\n         * Handle mouse down on volume bar\n         *\n         * @param {Event} event\n         *        The `mousedown` event that caused this to run.\n         *\n         * @listens mousedown\n         */\n        handleMouseDown(event) {\n            if (!isSingleLeftClick(event)) {\n                return;\n            }\n            super.handleMouseDown(event);\n        }\n\n        /**\n         * Handle movement events on the {@link VolumeMenuButton}.\n         *\n         * @param {Event} event\n         *        The event that caused this function to run.\n         *\n         * @listens mousemove\n         */\n        handleMouseMove(event) {\n            const mouseVolumeLevelDisplay = this.getChild('mouseVolumeLevelDisplay');\n            if (mouseVolumeLevelDisplay) {\n                const volumeBarEl = this.el();\n                const volumeBarRect = getBoundingClientRect(volumeBarEl);\n                const vertical = this.vertical();\n                let volumeBarPoint = getPointerPosition(volumeBarEl, event);\n                volumeBarPoint = vertical ? volumeBarPoint.y : volumeBarPoint.x;\n                // The default skin has a gap on either side of the `VolumeBar`. This means\n                // that it's possible to trigger this behavior outside the boundaries of\n                // the `VolumeBar`. This ensures we stay within it at all times.\n                volumeBarPoint = clamp(volumeBarPoint, 0, 1);\n                mouseVolumeLevelDisplay.update(volumeBarRect, volumeBarPoint, vertical);\n            }\n            if (!isSingleLeftClick(event)) {\n                return;\n            }\n            this.checkMuted();\n            this.player_.volume(this.calculateDistance(event));\n        }\n\n        /**\n         * If the player is muted unmute it.\n         */\n        checkMuted() {\n            if (this.player_.muted()) {\n                this.player_.muted(false);\n            }\n        }\n\n        /**\n         * Get percent of volume level\n         *\n         * @return {number}\n         *         Volume level percent as a decimal number.\n         */\n        getPercent() {\n            if (this.player_.muted()) {\n                return 0;\n            }\n            return this.player_.volume();\n        }\n\n        /**\n         * Increase volume level for keyboard users\n         */\n        stepForward() {\n            this.checkMuted();\n            this.player_.volume(this.player_.volume() + 0.1);\n        }\n\n        /**\n         * Decrease volume level for keyboard users\n         */\n        stepBack() {\n            this.checkMuted();\n            this.player_.volume(this.player_.volume() - 0.1);\n        }\n\n        /**\n         * Update ARIA accessibility attributes\n         *\n         * @param {Event} [event]\n         *        The `volumechange` event that caused this function to run.\n         *\n         * @listens Player#volumechange\n         */\n        updateARIAAttributes(event) {\n            const ariaValue = this.player_.muted() ? 0 : this.volumeAsPercentage_();\n            this.el_.setAttribute('aria-valuenow', ariaValue);\n            this.el_.setAttribute('aria-valuetext', ariaValue + '%');\n        }\n\n        /**\n         * Returns the current value of the player volume as a percentage\n         *\n         * @private\n         */\n        volumeAsPercentage_() {\n            return Math.round(this.player_.volume() * 100);\n        }\n\n        /**\n         * When user starts dragging the VolumeBar, store the volume and listen for\n         * the end of the drag. When the drag ends, if the volume was set to zero,\n         * set lastVolume to the stored volume.\n         *\n         * @listens slideractive\n         * @private\n         */\n        updateLastVolume_() {\n            const volumeBeforeDrag = this.player_.volume();\n            this.one('sliderinactive', () => {\n                if (this.player_.volume() === 0) {\n                    this.player_.lastVolume_(volumeBeforeDrag);\n                }\n            });\n        }\n    }\n\n    /**\n     * Default options for the `VolumeBar`\n     *\n     * @type {Object}\n     * @private\n     */\n    VolumeBar.prototype.options_ = {\n        children: ['volumeLevel'],\n        barName: 'volumeLevel'\n    };\n\n    // MouseVolumeLevelDisplay tooltip should not be added to a player on mobile devices\n    if (!IS_IOS && !IS_ANDROID) {\n        VolumeBar.prototype.options_.children.splice(0, 0, 'mouseVolumeLevelDisplay');\n    }\n\n    /**\n     * Call the update event for this Slider when this event happens on the player.\n     *\n     * @type {string}\n     */\n    VolumeBar.prototype.playerEvent = 'volumechange';\n    Component$1.registerComponent('VolumeBar', VolumeBar);\n\n    /**\n     * @file volume-control.js\n     */\n\n    /**\n     * The component for controlling the volume level\n     *\n     * @extends Component\n     */\n    class VolumeControl extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options={}]\n         *        The key/value store of player options.\n         */\n        constructor(player, options = {}) {\n            options.vertical = options.vertical || false;\n\n            // Pass the vertical option down to the VolumeBar if\n            // the VolumeBar is turned on.\n            if (typeof options.volumeBar === 'undefined' || isPlain(options.volumeBar)) {\n                options.volumeBar = options.volumeBar || {};\n                options.volumeBar.vertical = options.vertical;\n            }\n            super(player, options);\n\n            // hide this control if volume support is missing\n            checkVolumeSupport(this, player);\n            this.throttledHandleMouseMove = throttle(bind_(this, this.handleMouseMove), UPDATE_REFRESH_INTERVAL);\n            this.handleMouseUpHandler_ = e => this.handleMouseUp(e);\n            this.on('mousedown', e => this.handleMouseDown(e));\n            this.on('touchstart', e => this.handleMouseDown(e));\n            this.on('mousemove', e => this.handleMouseMove(e));\n\n            // while the slider is active (the mouse has been pressed down and\n            // is dragging) or in focus we do not want to hide the VolumeBar\n            this.on(this.volumeBar, ['focus', 'slideractive'], () => {\n                this.volumeBar.addClass('vjs-slider-active');\n                this.addClass('vjs-slider-active');\n                this.trigger('slideractive');\n            });\n            this.on(this.volumeBar, ['blur', 'sliderinactive'], () => {\n                this.volumeBar.removeClass('vjs-slider-active');\n                this.removeClass('vjs-slider-active');\n                this.trigger('sliderinactive');\n            });\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            let orientationClass = 'vjs-volume-horizontal';\n            if (this.options_.vertical) {\n                orientationClass = 'vjs-volume-vertical';\n            }\n            return super.createEl('div', {\n                className: `vjs-volume-control vjs-control ${orientationClass}`\n            });\n        }\n\n        /**\n         * Handle `mousedown` or `touchstart` events on the `VolumeControl`.\n         *\n         * @param {Event} event\n         *        `mousedown` or `touchstart` event that triggered this function\n         *\n         * @listens mousedown\n         * @listens touchstart\n         */\n        handleMouseDown(event) {\n            const doc = this.el_.ownerDocument;\n            this.on(doc, 'mousemove', this.throttledHandleMouseMove);\n            this.on(doc, 'touchmove', this.throttledHandleMouseMove);\n            this.on(doc, 'mouseup', this.handleMouseUpHandler_);\n            this.on(doc, 'touchend', this.handleMouseUpHandler_);\n        }\n\n        /**\n         * Handle `mouseup` or `touchend` events on the `VolumeControl`.\n         *\n         * @param {Event} event\n         *        `mouseup` or `touchend` event that triggered this function.\n         *\n         * @listens touchend\n         * @listens mouseup\n         */\n        handleMouseUp(event) {\n            const doc = this.el_.ownerDocument;\n            this.off(doc, 'mousemove', this.throttledHandleMouseMove);\n            this.off(doc, 'touchmove', this.throttledHandleMouseMove);\n            this.off(doc, 'mouseup', this.handleMouseUpHandler_);\n            this.off(doc, 'touchend', this.handleMouseUpHandler_);\n        }\n\n        /**\n         * Handle `mousedown` or `touchstart` events on the `VolumeControl`.\n         *\n         * @param {Event} event\n         *        `mousedown` or `touchstart` event that triggered this function\n         *\n         * @listens mousedown\n         * @listens touchstart\n         */\n        handleMouseMove(event) {\n            this.volumeBar.handleMouseMove(event);\n        }\n    }\n\n    /**\n     * Default options for the `VolumeControl`\n     *\n     * @type {Object}\n     * @private\n     */\n    VolumeControl.prototype.options_ = {\n        children: ['volumeBar']\n    };\n    Component$1.registerComponent('VolumeControl', VolumeControl);\n\n    /**\n     * Check if muting volume is supported and if it isn't hide the mute toggle\n     * button.\n     *\n     * @param { import('../../component').default } self\n     *        A reference to the mute toggle button\n     *\n     * @param { import('../../player').default } player\n     *        A reference to the player\n     *\n     * @private\n     */\n    const checkMuteSupport = function (self, player) {\n        // hide mute toggle button if it's not supported by the current tech\n        if (player.tech_ && !player.tech_.featuresMuteControl) {\n            self.addClass('vjs-hidden');\n        }\n        self.on(player, 'loadstart', function () {\n            if (!player.tech_.featuresMuteControl) {\n                self.addClass('vjs-hidden');\n            } else {\n                self.removeClass('vjs-hidden');\n            }\n        });\n    };\n\n    /**\n     * @file mute-toggle.js\n     */\n\n    /**\n     * A button component for muting the audio.\n     *\n     * @extends Button\n     */\n    class MuteToggle extends Button {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n\n            // hide this control if volume support is missing\n            checkMuteSupport(this, player);\n            this.on(player, ['loadstart', 'volumechange'], e => this.update(e));\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-mute-control ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * This gets called when an `MuteToggle` is \"clicked\". See\n         * {@link ClickableComponent} for more detailed information on what a click can be.\n         *\n         * @param {Event} [event]\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            const vol = this.player_.volume();\n            const lastVolume = this.player_.lastVolume_();\n            if (vol === 0) {\n                const volumeToSet = lastVolume < 0.1 ? 0.1 : lastVolume;\n                this.player_.volume(volumeToSet);\n                this.player_.muted(false);\n            } else {\n                this.player_.muted(this.player_.muted() ? false : true);\n            }\n        }\n\n        /**\n         * Update the `MuteToggle` button based on the state of `volume` and `muted`\n         * on the player.\n         *\n         * @param {Event} [event]\n         *        The {@link Player#loadstart} event if this function was called\n         *        through an event.\n         *\n         * @listens Player#loadstart\n         * @listens Player#volumechange\n         */\n        update(event) {\n            this.updateIcon_();\n            this.updateControlText_();\n        }\n\n        /**\n         * Update the appearance of the `MuteToggle` icon.\n         *\n         * Possible states (given `level` variable below):\n         * - 0: crossed out\n         * - 1: zero bars of volume\n         * - 2: one bar of volume\n         * - 3: two bars of volume\n         *\n         * @private\n         */\n        updateIcon_() {\n            const vol = this.player_.volume();\n            let level = 3;\n\n            // in iOS when a player is loaded with muted attribute\n            // and volume is changed with a native mute button\n            // we want to make sure muted state is updated\n            if (IS_IOS && this.player_.tech_ && this.player_.tech_.el_) {\n                this.player_.muted(this.player_.tech_.el_.muted);\n            }\n            if (vol === 0 || this.player_.muted()) {\n                level = 0;\n            } else if (vol < 0.33) {\n                level = 1;\n            } else if (vol < 0.67) {\n                level = 2;\n            }\n            removeClass(this.el_, [0, 1, 2, 3].reduce((str, i) => str + `${i ? ' ' : ''}vjs-vol-${i}`, ''));\n            addClass(this.el_, `vjs-vol-${level}`);\n        }\n\n        /**\n         * If `muted` has changed on the player, update the control text\n         * (`title` attribute on `vjs-mute-control` element and content of\n         * `vjs-control-text` element).\n         *\n         * @private\n         */\n        updateControlText_() {\n            const soundOff = this.player_.muted() || this.player_.volume() === 0;\n            const text = soundOff ? 'Unmute' : 'Mute';\n            if (this.controlText() !== text) {\n                this.controlText(text);\n            }\n        }\n    }\n\n    /**\n     * The text that should display over the `MuteToggle`s controls. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    MuteToggle.prototype.controlText_ = 'Mute';\n    Component$1.registerComponent('MuteToggle', MuteToggle);\n\n    /**\n     * @file volume-control.js\n     */\n\n    /**\n     * A Component to contain the MuteToggle and VolumeControl so that\n     * they can work together.\n     *\n     * @extends Component\n     */\n    class VolumePanel extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options={}]\n         *        The key/value store of player options.\n         */\n        constructor(player, options = {}) {\n            if (typeof options.inline !== 'undefined') {\n                options.inline = options.inline;\n            } else {\n                options.inline = true;\n            }\n\n            // pass the inline option down to the VolumeControl as vertical if\n            // the VolumeControl is on.\n            if (typeof options.volumeControl === 'undefined' || isPlain(options.volumeControl)) {\n                options.volumeControl = options.volumeControl || {};\n                options.volumeControl.vertical = !options.inline;\n            }\n            super(player, options);\n\n            // this handler is used by mouse handler methods below\n            this.handleKeyPressHandler_ = e => this.handleKeyPress(e);\n            this.on(player, ['loadstart'], e => this.volumePanelState_(e));\n            this.on(this.muteToggle, 'keyup', e => this.handleKeyPress(e));\n            this.on(this.volumeControl, 'keyup', e => this.handleVolumeControlKeyUp(e));\n            this.on('keydown', e => this.handleKeyPress(e));\n            this.on('mouseover', e => this.handleMouseOver(e));\n            this.on('mouseout', e => this.handleMouseOut(e));\n\n            // while the slider is active (the mouse has been pressed down and\n            // is dragging) we do not want to hide the VolumeBar\n            this.on(this.volumeControl, ['slideractive'], this.sliderActive_);\n            this.on(this.volumeControl, ['sliderinactive'], this.sliderInactive_);\n        }\n\n        /**\n         * Add vjs-slider-active class to the VolumePanel\n         *\n         * @listens VolumeControl#slideractive\n         * @private\n         */\n        sliderActive_() {\n            this.addClass('vjs-slider-active');\n        }\n\n        /**\n         * Removes vjs-slider-active class to the VolumePanel\n         *\n         * @listens VolumeControl#sliderinactive\n         * @private\n         */\n        sliderInactive_() {\n            this.removeClass('vjs-slider-active');\n        }\n\n        /**\n         * Adds vjs-hidden or vjs-mute-toggle-only to the VolumePanel\n         * depending on MuteToggle and VolumeControl state\n         *\n         * @listens Player#loadstart\n         * @private\n         */\n        volumePanelState_() {\n            // hide volume panel if neither volume control or mute toggle\n            // are displayed\n            if (this.volumeControl.hasClass('vjs-hidden') && this.muteToggle.hasClass('vjs-hidden')) {\n                this.addClass('vjs-hidden');\n            }\n\n            // if only mute toggle is visible we don't want\n            // volume panel expanding when hovered or active\n            if (this.volumeControl.hasClass('vjs-hidden') && !this.muteToggle.hasClass('vjs-hidden')) {\n                this.addClass('vjs-mute-toggle-only');\n            }\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            let orientationClass = 'vjs-volume-panel-horizontal';\n            if (!this.options_.inline) {\n                orientationClass = 'vjs-volume-panel-vertical';\n            }\n            return super.createEl('div', {\n                className: `vjs-volume-panel vjs-control ${orientationClass}`\n            });\n        }\n\n        /**\n         * Dispose of the `volume-panel` and all child components.\n         */\n        dispose() {\n            this.handleMouseOut();\n            super.dispose();\n        }\n\n        /**\n         * Handles `keyup` events on the `VolumeControl`, looking for ESC, which closes\n         * the volume panel and sets focus on `MuteToggle`.\n         *\n         * @param {Event} event\n         *        The `keyup` event that caused this function to be called.\n         *\n         * @listens keyup\n         */\n        handleVolumeControlKeyUp(event) {\n            if (keycode.isEventKey(event, 'Esc')) {\n                this.muteToggle.focus();\n            }\n        }\n\n        /**\n         * This gets called when a `VolumePanel` gains hover via a `mouseover` event.\n         * Turns on listening for `mouseover` event. When they happen it\n         * calls `this.handleMouseOver`.\n         *\n         * @param {Event} event\n         *        The `mouseover` event that caused this function to be called.\n         *\n         * @listens mouseover\n         */\n        handleMouseOver(event) {\n            this.addClass('vjs-hover');\n            on(document, 'keyup', this.handleKeyPressHandler_);\n        }\n\n        /**\n         * This gets called when a `VolumePanel` gains hover via a `mouseout` event.\n         * Turns on listening for `mouseout` event. When they happen it\n         * calls `this.handleMouseOut`.\n         *\n         * @param {Event} event\n         *        The `mouseout` event that caused this function to be called.\n         *\n         * @listens mouseout\n         */\n        handleMouseOut(event) {\n            this.removeClass('vjs-hover');\n            off(document, 'keyup', this.handleKeyPressHandler_);\n        }\n\n        /**\n         * Handles `keyup` event on the document or `keydown` event on the `VolumePanel`,\n         * looking for ESC, which hides the `VolumeControl`.\n         *\n         * @param {Event} event\n         *        The keypress that triggered this event.\n         *\n         * @listens keydown | keyup\n         */\n        handleKeyPress(event) {\n            if (keycode.isEventKey(event, 'Esc')) {\n                this.handleMouseOut();\n            }\n        }\n    }\n\n    /**\n     * Default options for the `VolumeControl`\n     *\n     * @type {Object}\n     * @private\n     */\n    VolumePanel.prototype.options_ = {\n        children: ['muteToggle', 'volumeControl']\n    };\n    Component$1.registerComponent('VolumePanel', VolumePanel);\n\n    /**\n     * Button to skip forward a configurable amount of time\n     * through a video. Renders in the control bar.\n     *\n     * e.g. options: {controlBar: {skipButtons: forward: 5}}\n     *\n     * @extends Button\n     */\n    class SkipForward extends Button {\n        constructor(player, options) {\n            super(player, options);\n            this.validOptions = [5, 10, 30];\n            this.skipTime = this.getSkipForwardTime();\n            if (this.skipTime && this.validOptions.includes(this.skipTime)) {\n                this.controlText(this.localize('Skip forward {1} seconds', [this.skipTime]));\n                this.show();\n            } else {\n                this.hide();\n            }\n        }\n        getSkipForwardTime() {\n            const playerOptions = this.options_.playerOptions;\n            return playerOptions.controlBar && playerOptions.controlBar.skipButtons && playerOptions.controlBar.skipButtons.forward;\n        }\n        buildCSSClass() {\n            return `vjs-skip-forward-${this.getSkipForwardTime()} ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * On click, skips forward in the duration/seekable range by a configurable amount of seconds.\n         * If the time left in the duration/seekable range is less than the configured 'skip forward' time,\n         * skips to end of duration/seekable range.\n         *\n         * Handle a click on a `SkipForward` button\n         *\n         * @param {EventTarget~Event} event\n         *        The `click` event that caused this function\n         *        to be called\n         */\n        handleClick(event) {\n            const currentVideoTime = this.player_.currentTime();\n            const liveTracker = this.player_.liveTracker;\n            const duration = liveTracker && liveTracker.isLive() ? liveTracker.seekableEnd() : this.player_.duration();\n            let newTime;\n            if (currentVideoTime + this.skipTime <= duration) {\n                newTime = currentVideoTime + this.skipTime;\n            } else {\n                newTime = duration;\n            }\n            this.player_.currentTime(newTime);\n        }\n\n        /**\n         * Update control text on languagechange\n         */\n        handleLanguagechange() {\n            this.controlText(this.localize('Skip forward {1} seconds', [this.skipTime]));\n        }\n    }\n    Component$1.registerComponent('SkipForward', SkipForward);\n\n    /**\n     * Button to skip backward a configurable amount of time\n     * through a video. Renders in the control bar.\n     *\n     *  * e.g. options: {controlBar: {skipButtons: backward: 5}}\n     *\n     * @extends Button\n     */\n    class SkipBackward extends Button {\n        constructor(player, options) {\n            super(player, options);\n            this.validOptions = [5, 10, 30];\n            this.skipTime = this.getSkipBackwardTime();\n            if (this.skipTime && this.validOptions.includes(this.skipTime)) {\n                this.controlText(this.localize('Skip backward {1} seconds', [this.skipTime]));\n                this.show();\n            } else {\n                this.hide();\n            }\n        }\n        getSkipBackwardTime() {\n            const playerOptions = this.options_.playerOptions;\n            return playerOptions.controlBar && playerOptions.controlBar.skipButtons && playerOptions.controlBar.skipButtons.backward;\n        }\n        buildCSSClass() {\n            return `vjs-skip-backward-${this.getSkipBackwardTime()} ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * On click, skips backward in the video by a configurable amount of seconds.\n         * If the current time in the video is less than the configured 'skip backward' time,\n         * skips to beginning of video or seekable range.\n         *\n         * Handle a click on a `SkipBackward` button\n         *\n         * @param {EventTarget~Event} event\n         *        The `click` event that caused this function\n         *        to be called\n         */\n        handleClick(event) {\n            const currentVideoTime = this.player_.currentTime();\n            const liveTracker = this.player_.liveTracker;\n            const seekableStart = liveTracker && liveTracker.isLive() && liveTracker.seekableStart();\n            let newTime;\n            if (seekableStart && currentVideoTime - this.skipTime <= seekableStart) {\n                newTime = seekableStart;\n            } else if (currentVideoTime >= this.skipTime) {\n                newTime = currentVideoTime - this.skipTime;\n            } else {\n                newTime = 0;\n            }\n            this.player_.currentTime(newTime);\n        }\n\n        /**\n         * Update control text on languagechange\n         */\n        handleLanguagechange() {\n            this.controlText(this.localize('Skip backward {1} seconds', [this.skipTime]));\n        }\n    }\n    SkipBackward.prototype.controlText_ = 'Skip Backward';\n    Component$1.registerComponent('SkipBackward', SkipBackward);\n\n    /**\n     * @file menu.js\n     */\n\n    /**\n     * The Menu component is used to build popup menus, including subtitle and\n     * captions selection menus.\n     *\n     * @extends Component\n     */\n    class Menu extends Component$1 {\n        /**\n         * Create an instance of this class.\n         *\n         * @param { import('../player').default } player\n         *        the player that this component should attach to\n         *\n         * @param {Object} [options]\n         *        Object of option names and values\n         *\n         */\n        constructor(player, options) {\n            super(player, options);\n            if (options) {\n                this.menuButton_ = options.menuButton;\n            }\n            this.focusedChild_ = -1;\n            this.on('keydown', e => this.handleKeyDown(e));\n\n            // All the menu item instances share the same blur handler provided by the menu container.\n            this.boundHandleBlur_ = e => this.handleBlur(e);\n            this.boundHandleTapClick_ = e => this.handleTapClick(e);\n        }\n\n        /**\n         * Add event listeners to the {@link MenuItem}.\n         *\n         * @param {Object} component\n         *        The instance of the `MenuItem` to add listeners to.\n         *\n         */\n        addEventListenerForItem(component) {\n            if (!(component instanceof Component$1)) {\n                return;\n            }\n            this.on(component, 'blur', this.boundHandleBlur_);\n            this.on(component, ['tap', 'click'], this.boundHandleTapClick_);\n        }\n\n        /**\n         * Remove event listeners from the {@link MenuItem}.\n         *\n         * @param {Object} component\n         *        The instance of the `MenuItem` to remove listeners.\n         *\n         */\n        removeEventListenerForItem(component) {\n            if (!(component instanceof Component$1)) {\n                return;\n            }\n            this.off(component, 'blur', this.boundHandleBlur_);\n            this.off(component, ['tap', 'click'], this.boundHandleTapClick_);\n        }\n\n        /**\n         * This method will be called indirectly when the component has been added\n         * before the component adds to the new menu instance by `addItem`.\n         * In this case, the original menu instance will remove the component\n         * by calling `removeChild`.\n         *\n         * @param {Object} component\n         *        The instance of the `MenuItem`\n         */\n        removeChild(component) {\n            if (typeof component === 'string') {\n                component = this.getChild(component);\n            }\n            this.removeEventListenerForItem(component);\n            super.removeChild(component);\n        }\n\n        /**\n         * Add a {@link MenuItem} to the menu.\n         *\n         * @param {Object|string} component\n         *        The name or instance of the `MenuItem` to add.\n         *\n         */\n        addItem(component) {\n            const childComponent = this.addChild(component);\n            if (childComponent) {\n                this.addEventListenerForItem(childComponent);\n            }\n        }\n\n        /**\n         * Create the `Menu`s DOM element.\n         *\n         * @return {Element}\n         *         the element that was created\n         */\n        createEl() {\n            const contentElType = this.options_.contentElType || 'ul';\n            this.contentEl_ = createEl(contentElType, {\n                className: 'vjs-menu-content'\n            });\n            this.contentEl_.setAttribute('role', 'menu');\n            const el = super.createEl('div', {\n                append: this.contentEl_,\n                className: 'vjs-menu'\n            });\n            el.appendChild(this.contentEl_);\n\n            // Prevent clicks from bubbling up. Needed for Menu Buttons,\n            // where a click on the parent is significant\n            on(el, 'click', function (event) {\n                event.preventDefault();\n                event.stopImmediatePropagation();\n            });\n            return el;\n        }\n        dispose() {\n            this.contentEl_ = null;\n            this.boundHandleBlur_ = null;\n            this.boundHandleTapClick_ = null;\n            super.dispose();\n        }\n\n        /**\n         * Called when a `MenuItem` loses focus.\n         *\n         * @param {Event} event\n         *        The `blur` event that caused this function to be called.\n         *\n         * @listens blur\n         */\n        handleBlur(event) {\n            const relatedTarget = event.relatedTarget || document.activeElement;\n\n            // Close menu popup when a user clicks outside the menu\n            if (!this.children().some(element => {\n                return element.el() === relatedTarget;\n            })) {\n                const btn = this.menuButton_;\n                if (btn && btn.buttonPressed_ && relatedTarget !== btn.el().firstChild) {\n                    btn.unpressButton();\n                }\n            }\n        }\n\n        /**\n         * Called when a `MenuItem` gets clicked or tapped.\n         *\n         * @param {Event} event\n         *        The `click` or `tap` event that caused this function to be called.\n         *\n         * @listens click,tap\n         */\n        handleTapClick(event) {\n            // Unpress the associated MenuButton, and move focus back to it\n            if (this.menuButton_) {\n                this.menuButton_.unpressButton();\n                const childComponents = this.children();\n                if (!Array.isArray(childComponents)) {\n                    return;\n                }\n                const foundComponent = childComponents.filter(component => component.el() === event.target)[0];\n                if (!foundComponent) {\n                    return;\n                }\n\n                // don't focus menu button if item is a caption settings item\n                // because focus will move elsewhere\n                if (foundComponent.name() !== 'CaptionSettingsMenuItem') {\n                    this.menuButton_.focus();\n                }\n            }\n        }\n\n        /**\n         * Handle a `keydown` event on this menu. This listener is added in the constructor.\n         *\n         * @param {Event} event\n         *        A `keydown` event that happened on the menu.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            // Left and Down Arrows\n            if (keycode.isEventKey(event, 'Left') || keycode.isEventKey(event, 'Down')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.stepForward();\n\n                // Up and Right Arrows\n            } else if (keycode.isEventKey(event, 'Right') || keycode.isEventKey(event, 'Up')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.stepBack();\n            }\n        }\n\n        /**\n         * Move to next (lower) menu item for keyboard users.\n         */\n        stepForward() {\n            let stepChild = 0;\n            if (this.focusedChild_ !== undefined) {\n                stepChild = this.focusedChild_ + 1;\n            }\n            this.focus(stepChild);\n        }\n\n        /**\n         * Move to previous (higher) menu item for keyboard users.\n         */\n        stepBack() {\n            let stepChild = 0;\n            if (this.focusedChild_ !== undefined) {\n                stepChild = this.focusedChild_ - 1;\n            }\n            this.focus(stepChild);\n        }\n\n        /**\n         * Set focus on a {@link MenuItem} in the `Menu`.\n         *\n         * @param {Object|string} [item=0]\n         *        Index of child item set focus on.\n         */\n        focus(item = 0) {\n            const children = this.children().slice();\n            const haveTitle = children.length && children[0].hasClass('vjs-menu-title');\n            if (haveTitle) {\n                children.shift();\n            }\n            if (children.length > 0) {\n                if (item < 0) {\n                    item = 0;\n                } else if (item >= children.length) {\n                    item = children.length - 1;\n                }\n                this.focusedChild_ = item;\n                children[item].el_.focus();\n            }\n        }\n    }\n    Component$1.registerComponent('Menu', Menu);\n\n    /**\n     * @file menu-button.js\n     */\n\n    /**\n     * A `MenuButton` class for any popup {@link Menu}.\n     *\n     * @extends Component\n     */\n    class MenuButton extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options={}]\n         *        The key/value store of player options.\n         */\n        constructor(player, options = {}) {\n            super(player, options);\n            this.menuButton_ = new Button(player, options);\n            this.menuButton_.controlText(this.controlText_);\n            this.menuButton_.el_.setAttribute('aria-haspopup', 'true');\n\n            // Add buildCSSClass values to the button, not the wrapper\n            const buttonClass = Button.prototype.buildCSSClass();\n            this.menuButton_.el_.className = this.buildCSSClass() + ' ' + buttonClass;\n            this.menuButton_.removeClass('vjs-control');\n            this.addChild(this.menuButton_);\n            this.update();\n            this.enabled_ = true;\n            const handleClick = e => this.handleClick(e);\n            this.handleMenuKeyUp_ = e => this.handleMenuKeyUp(e);\n            this.on(this.menuButton_, 'tap', handleClick);\n            this.on(this.menuButton_, 'click', handleClick);\n            this.on(this.menuButton_, 'keydown', e => this.handleKeyDown(e));\n            this.on(this.menuButton_, 'mouseenter', () => {\n                this.addClass('vjs-hover');\n                this.menu.show();\n                on(document, 'keyup', this.handleMenuKeyUp_);\n            });\n            this.on('mouseleave', e => this.handleMouseLeave(e));\n            this.on('keydown', e => this.handleSubmenuKeyDown(e));\n        }\n\n        /**\n         * Update the menu based on the current state of its items.\n         */\n        update() {\n            const menu = this.createMenu();\n            if (this.menu) {\n                this.menu.dispose();\n                this.removeChild(this.menu);\n            }\n            this.menu = menu;\n            this.addChild(menu);\n\n            /**\n             * Track the state of the menu button\n             *\n             * @type {Boolean}\n             * @private\n             */\n            this.buttonPressed_ = false;\n            this.menuButton_.el_.setAttribute('aria-expanded', 'false');\n            if (this.items && this.items.length <= this.hideThreshold_) {\n                this.hide();\n                this.menu.contentEl_.removeAttribute('role');\n            } else {\n                this.show();\n                this.menu.contentEl_.setAttribute('role', 'menu');\n            }\n        }\n\n        /**\n         * Create the menu and add all items to it.\n         *\n         * @return {Menu}\n         *         The constructed menu\n         */\n        createMenu() {\n            const menu = new Menu(this.player_, {\n                menuButton: this\n            });\n\n            /**\n             * Hide the menu if the number of items is less than or equal to this threshold. This defaults\n             * to 0 and whenever we add items which can be hidden to the menu we'll increment it. We list\n             * it here because every time we run `createMenu` we need to reset the value.\n             *\n             * @protected\n             * @type {Number}\n             */\n            this.hideThreshold_ = 0;\n\n            // Add a title list item to the top\n            if (this.options_.title) {\n                const titleEl = createEl('li', {\n                    className: 'vjs-menu-title',\n                    textContent: toTitleCase$1(this.options_.title),\n                    tabIndex: -1\n                });\n                const titleComponent = new Component$1(this.player_, {\n                    el: titleEl\n                });\n                menu.addItem(titleComponent);\n            }\n            this.items = this.createItems();\n            if (this.items) {\n                // Add menu items to the menu\n                for (let i = 0; i < this.items.length; i++) {\n                    menu.addItem(this.items[i]);\n                }\n            }\n            return menu;\n        }\n\n        /**\n         * Create the list of menu items. Specific to each subclass.\n         *\n         * @abstract\n         */\n        createItems() {}\n\n        /**\n         * Create the `MenuButtons`s DOM element.\n         *\n         * @return {Element}\n         *         The element that gets created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: this.buildWrapperCSSClass()\n            }, {});\n        }\n\n        /**\n         * Allow sub components to stack CSS class names for the wrapper element\n         *\n         * @return {string}\n         *         The constructed wrapper DOM `className`\n         */\n        buildWrapperCSSClass() {\n            let menuButtonClass = 'vjs-menu-button';\n\n            // If the inline option is passed, we want to use different styles altogether.\n            if (this.options_.inline === true) {\n                menuButtonClass += '-inline';\n            } else {\n                menuButtonClass += '-popup';\n            }\n\n            // TODO: Fix the CSS so that this isn't necessary\n            const buttonClass = Button.prototype.buildCSSClass();\n            return `vjs-menu-button ${menuButtonClass} ${buttonClass} ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            let menuButtonClass = 'vjs-menu-button';\n\n            // If the inline option is passed, we want to use different styles altogether.\n            if (this.options_.inline === true) {\n                menuButtonClass += '-inline';\n            } else {\n                menuButtonClass += '-popup';\n            }\n            return `vjs-menu-button ${menuButtonClass} ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * Get or set the localized control text that will be used for accessibility.\n         *\n         * > NOTE: This will come from the internal `menuButton_` element.\n         *\n         * @param {string} [text]\n         *        Control text for element.\n         *\n         * @param {Element} [el=this.menuButton_.el()]\n         *        Element to set the title on.\n         *\n         * @return {string}\n         *         - The control text when getting\n         */\n        controlText(text, el = this.menuButton_.el()) {\n            return this.menuButton_.controlText(text, el);\n        }\n\n        /**\n         * Dispose of the `menu-button` and all child components.\n         */\n        dispose() {\n            this.handleMouseLeave();\n            super.dispose();\n        }\n\n        /**\n         * Handle a click on a `MenuButton`.\n         * See {@link ClickableComponent#handleClick} for instances where this is called.\n         *\n         * @param {Event} event\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            if (this.buttonPressed_) {\n                this.unpressButton();\n            } else {\n                this.pressButton();\n            }\n        }\n\n        /**\n         * Handle `mouseleave` for `MenuButton`.\n         *\n         * @param {Event} event\n         *        The `mouseleave` event that caused this function to be called.\n         *\n         * @listens mouseleave\n         */\n        handleMouseLeave(event) {\n            this.removeClass('vjs-hover');\n            off(document, 'keyup', this.handleMenuKeyUp_);\n        }\n\n        /**\n         * Set the focus to the actual button, not to this element\n         */\n        focus() {\n            this.menuButton_.focus();\n        }\n\n        /**\n         * Remove the focus from the actual button, not this element\n         */\n        blur() {\n            this.menuButton_.blur();\n        }\n\n        /**\n         * Handle tab, escape, down arrow, and up arrow keys for `MenuButton`. See\n         * {@link ClickableComponent#handleKeyDown} for instances where this is called.\n         *\n         * @param {Event} event\n         *        The `keydown` event that caused this function to be called.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            // Escape or Tab unpress the 'button'\n            if (keycode.isEventKey(event, 'Esc') || keycode.isEventKey(event, 'Tab')) {\n                if (this.buttonPressed_) {\n                    this.unpressButton();\n                }\n\n                // Don't preventDefault for Tab key - we still want to lose focus\n                if (!keycode.isEventKey(event, 'Tab')) {\n                    event.preventDefault();\n                    // Set focus back to the menu button's button\n                    this.menuButton_.focus();\n                }\n                // Up Arrow or Down Arrow also 'press' the button to open the menu\n            } else if (keycode.isEventKey(event, 'Up') || keycode.isEventKey(event, 'Down')) {\n                if (!this.buttonPressed_) {\n                    event.preventDefault();\n                    this.pressButton();\n                }\n            }\n        }\n\n        /**\n         * Handle a `keyup` event on a `MenuButton`. The listener for this is added in\n         * the constructor.\n         *\n         * @param {Event} event\n         *        Key press event\n         *\n         * @listens keyup\n         */\n        handleMenuKeyUp(event) {\n            // Escape hides popup menu\n            if (keycode.isEventKey(event, 'Esc') || keycode.isEventKey(event, 'Tab')) {\n                this.removeClass('vjs-hover');\n            }\n        }\n\n        /**\n         * This method name now delegates to `handleSubmenuKeyDown`. This means\n         * anyone calling `handleSubmenuKeyPress` will not see their method calls\n         * stop working.\n         *\n         * @param {Event} event\n         *        The event that caused this function to be called.\n         */\n        handleSubmenuKeyPress(event) {\n            this.handleSubmenuKeyDown(event);\n        }\n\n        /**\n         * Handle a `keydown` event on a sub-menu. The listener for this is added in\n         * the constructor.\n         *\n         * @param {Event} event\n         *        Key press event\n         *\n         * @listens keydown\n         */\n        handleSubmenuKeyDown(event) {\n            // Escape or Tab unpress the 'button'\n            if (keycode.isEventKey(event, 'Esc') || keycode.isEventKey(event, 'Tab')) {\n                if (this.buttonPressed_) {\n                    this.unpressButton();\n                }\n                // Don't preventDefault for Tab key - we still want to lose focus\n                if (!keycode.isEventKey(event, 'Tab')) {\n                    event.preventDefault();\n                    // Set focus back to the menu button's button\n                    this.menuButton_.focus();\n                }\n            }\n        }\n\n        /**\n         * Put the current `MenuButton` into a pressed state.\n         */\n        pressButton() {\n            if (this.enabled_) {\n                this.buttonPressed_ = true;\n                this.menu.show();\n                this.menu.lockShowing();\n                this.menuButton_.el_.setAttribute('aria-expanded', 'true');\n\n                // set the focus into the submenu, except on iOS where it is resulting in\n                // undesired scrolling behavior when the player is in an iframe\n                if (IS_IOS && isInFrame()) {\n                    // Return early so that the menu isn't focused\n                    return;\n                }\n                this.menu.focus();\n            }\n        }\n\n        /**\n         * Take the current `MenuButton` out of a pressed state.\n         */\n        unpressButton() {\n            if (this.enabled_) {\n                this.buttonPressed_ = false;\n                this.menu.unlockShowing();\n                this.menu.hide();\n                this.menuButton_.el_.setAttribute('aria-expanded', 'false');\n            }\n        }\n\n        /**\n         * Disable the `MenuButton`. Don't allow it to be clicked.\n         */\n        disable() {\n            this.unpressButton();\n            this.enabled_ = false;\n            this.addClass('vjs-disabled');\n            this.menuButton_.disable();\n        }\n\n        /**\n         * Enable the `MenuButton`. Allow it to be clicked.\n         */\n        enable() {\n            this.enabled_ = true;\n            this.removeClass('vjs-disabled');\n            this.menuButton_.enable();\n        }\n    }\n    Component$1.registerComponent('MenuButton', MenuButton);\n\n    /**\n     * @file track-button.js\n     */\n\n    /**\n     * The base class for buttons that toggle specific  track types (e.g. subtitles).\n     *\n     * @extends MenuButton\n     */\n    class TrackButton extends MenuButton {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            const tracks = options.tracks;\n            super(player, options);\n            if (this.items.length <= 1) {\n                this.hide();\n            }\n            if (!tracks) {\n                return;\n            }\n            const updateHandler = bind_(this, this.update);\n            tracks.addEventListener('removetrack', updateHandler);\n            tracks.addEventListener('addtrack', updateHandler);\n            tracks.addEventListener('labelchange', updateHandler);\n            this.player_.on('ready', updateHandler);\n            this.player_.on('dispose', function () {\n                tracks.removeEventListener('removetrack', updateHandler);\n                tracks.removeEventListener('addtrack', updateHandler);\n                tracks.removeEventListener('labelchange', updateHandler);\n            });\n        }\n    }\n    Component$1.registerComponent('TrackButton', TrackButton);\n\n    /**\n     * @file menu-keys.js\n     */\n\n    /**\n     * All keys used for operation of a menu (`MenuButton`, `Menu`, and `MenuItem`)\n     * Note that 'Enter' and 'Space' are not included here (otherwise they would\n     * prevent the `MenuButton` and `MenuItem` from being keyboard-clickable)\n     *\n     * @typedef MenuKeys\n     * @array\n     */\n    const MenuKeys = ['Tab', 'Esc', 'Up', 'Down', 'Right', 'Left'];\n\n    /**\n     * @file menu-item.js\n     */\n\n    /**\n     * The component for a menu item. `<li>`\n     *\n     * @extends ClickableComponent\n     */\n    class MenuItem extends ClickableComponent {\n        /**\n         * Creates an instance of the this class.\n         *\n         * @param { import('../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options={}]\n         *        The key/value store of player options.\n         *\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.selectable = options.selectable;\n            this.isSelected_ = options.selected || false;\n            this.multiSelectable = options.multiSelectable;\n            this.selected(this.isSelected_);\n            if (this.selectable) {\n                if (this.multiSelectable) {\n                    this.el_.setAttribute('role', 'menuitemcheckbox');\n                } else {\n                    this.el_.setAttribute('role', 'menuitemradio');\n                }\n            } else {\n                this.el_.setAttribute('role', 'menuitem');\n            }\n        }\n\n        /**\n         * Create the `MenuItem's DOM element\n         *\n         * @param {string} [type=li]\n         *        Element's node type, not actually used, always set to `li`.\n         *\n         * @param {Object} [props={}]\n         *        An object of properties that should be set on the element\n         *\n         * @param {Object} [attrs={}]\n         *        An object of attributes that should be set on the element\n         *\n         * @return {Element}\n         *         The element that gets created.\n         */\n        createEl(type, props, attrs) {\n            // The control is textual, not just an icon\n            this.nonIconControl = true;\n            const el = super.createEl('li', Object.assign({\n                className: 'vjs-menu-item',\n                tabIndex: -1\n            }, props), attrs);\n\n            // swap icon with menu item text.\n            el.replaceChild(createEl('span', {\n                className: 'vjs-menu-item-text',\n                textContent: this.localize(this.options_.label)\n            }), el.querySelector('.vjs-icon-placeholder'));\n            return el;\n        }\n\n        /**\n         * Ignore keys which are used by the menu, but pass any other ones up. See\n         * {@link ClickableComponent#handleKeyDown} for instances where this is called.\n         *\n         * @param {Event} event\n         *        The `keydown` event that caused this function to be called.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            if (!MenuKeys.some(key => keycode.isEventKey(event, key))) {\n                // Pass keydown handling up for unused keys\n                super.handleKeyDown(event);\n            }\n        }\n\n        /**\n         * Any click on a `MenuItem` puts it into the selected state.\n         * See {@link ClickableComponent#handleClick} for instances where this is called.\n         *\n         * @param {Event} event\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            this.selected(true);\n        }\n\n        /**\n         * Set the state for this menu item as selected or not.\n         *\n         * @param {boolean} selected\n         *        if the menu item is selected or not\n         */\n        selected(selected) {\n            if (this.selectable) {\n                if (selected) {\n                    this.addClass('vjs-selected');\n                    this.el_.setAttribute('aria-checked', 'true');\n                    // aria-checked isn't fully supported by browsers/screen readers,\n                    // so indicate selected state to screen reader in the control text.\n                    this.controlText(', selected');\n                    this.isSelected_ = true;\n                } else {\n                    this.removeClass('vjs-selected');\n                    this.el_.setAttribute('aria-checked', 'false');\n                    // Indicate un-selected state to screen reader\n                    this.controlText('');\n                    this.isSelected_ = false;\n                }\n            }\n        }\n    }\n    Component$1.registerComponent('MenuItem', MenuItem);\n\n    /**\n     * @file text-track-menu-item.js\n     */\n\n    /**\n     * The specific menu item type for selecting a language within a text track kind\n     *\n     * @extends MenuItem\n     */\n    class TextTrackMenuItem extends MenuItem {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            const track = options.track;\n            const tracks = player.textTracks();\n\n            // Modify options for parent MenuItem class's init.\n            options.label = track.label || track.language || 'Unknown';\n            options.selected = track.mode === 'showing';\n            super(player, options);\n            this.track = track;\n            // Determine the relevant kind(s) of tracks for this component and filter\n            // out empty kinds.\n            this.kinds = (options.kinds || [options.kind || this.track.kind]).filter(Boolean);\n            const changeHandler = (...args) => {\n                this.handleTracksChange.apply(this, args);\n            };\n            const selectedLanguageChangeHandler = (...args) => {\n                this.handleSelectedLanguageChange.apply(this, args);\n            };\n            player.on(['loadstart', 'texttrackchange'], changeHandler);\n            tracks.addEventListener('change', changeHandler);\n            tracks.addEventListener('selectedlanguagechange', selectedLanguageChangeHandler);\n            this.on('dispose', function () {\n                player.off(['loadstart', 'texttrackchange'], changeHandler);\n                tracks.removeEventListener('change', changeHandler);\n                tracks.removeEventListener('selectedlanguagechange', selectedLanguageChangeHandler);\n            });\n\n            // iOS7 doesn't dispatch change events to TextTrackLists when an\n            // associated track's mode changes. Without something like\n            // Object.observe() (also not present on iOS7), it's not\n            // possible to detect changes to the mode attribute and polyfill\n            // the change event. As a poor substitute, we manually dispatch\n            // change events whenever the controls modify the mode.\n            if (tracks.onchange === undefined) {\n                let event;\n                this.on(['tap', 'click'], function () {\n                    if (typeof window.Event !== 'object') {\n                        // Android 2.3 throws an Illegal Constructor error for window.Event\n                        try {\n                            event = new window.Event('change');\n                        } catch (err) {\n                            // continue regardless of error\n                        }\n                    }\n                    if (!event) {\n                        event = document.createEvent('Event');\n                        event.initEvent('change', true, true);\n                    }\n                    tracks.dispatchEvent(event);\n                });\n            }\n\n            // set the default state based on current tracks\n            this.handleTracksChange();\n        }\n\n        /**\n         * This gets called when an `TextTrackMenuItem` is \"clicked\". See\n         * {@link ClickableComponent} for more detailed information on what a click can be.\n         *\n         * @param {Event} event\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            const referenceTrack = this.track;\n            const tracks = this.player_.textTracks();\n            super.handleClick(event);\n            if (!tracks) {\n                return;\n            }\n            for (let i = 0; i < tracks.length; i++) {\n                const track = tracks[i];\n\n                // If the track from the text tracks list is not of the right kind,\n                // skip it. We do not want to affect tracks of incompatible kind(s).\n                if (this.kinds.indexOf(track.kind) === -1) {\n                    continue;\n                }\n\n                // If this text track is the component's track and it is not showing,\n                // set it to showing.\n                if (track === referenceTrack) {\n                    if (track.mode !== 'showing') {\n                        track.mode = 'showing';\n                    }\n\n                    // If this text track is not the component's track and it is not\n                    // disabled, set it to disabled.\n                } else if (track.mode !== 'disabled') {\n                    track.mode = 'disabled';\n                }\n            }\n        }\n\n        /**\n         * Handle text track list change\n         *\n         * @param {Event} event\n         *        The `change` event that caused this function to be called.\n         *\n         * @listens TextTrackList#change\n         */\n        handleTracksChange(event) {\n            const shouldBeSelected = this.track.mode === 'showing';\n\n            // Prevent redundant selected() calls because they may cause\n            // screen readers to read the appended control text unnecessarily\n            if (shouldBeSelected !== this.isSelected_) {\n                this.selected(shouldBeSelected);\n            }\n        }\n        handleSelectedLanguageChange(event) {\n            if (this.track.mode === 'showing') {\n                const selectedLanguage = this.player_.cache_.selectedLanguage;\n\n                // Don't replace the kind of track across the same language\n                if (selectedLanguage && selectedLanguage.enabled && selectedLanguage.language === this.track.language && selectedLanguage.kind !== this.track.kind) {\n                    return;\n                }\n                this.player_.cache_.selectedLanguage = {\n                    enabled: true,\n                    language: this.track.language,\n                    kind: this.track.kind\n                };\n            }\n        }\n        dispose() {\n            // remove reference to track object on dispose\n            this.track = null;\n            super.dispose();\n        }\n    }\n    Component$1.registerComponent('TextTrackMenuItem', TextTrackMenuItem);\n\n    /**\n     * @file off-text-track-menu-item.js\n     */\n\n    /**\n     * A special menu item for turning of a specific type of text track\n     *\n     * @extends TextTrackMenuItem\n     */\n    class OffTextTrackMenuItem extends TextTrackMenuItem {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            // Create pseudo track info\n            // Requires options['kind']\n            options.track = {\n                player,\n                // it is no longer necessary to store `kind` or `kinds` on the track itself\n                // since they are now stored in the `kinds` property of all instances of\n                // TextTrackMenuItem, but this will remain for backwards compatibility\n                kind: options.kind,\n                kinds: options.kinds,\n                default: false,\n                mode: 'disabled'\n            };\n            if (!options.kinds) {\n                options.kinds = [options.kind];\n            }\n            if (options.label) {\n                options.track.label = options.label;\n            } else {\n                options.track.label = options.kinds.join(' and ') + ' off';\n            }\n\n            // MenuItem is selectable\n            options.selectable = true;\n            // MenuItem is NOT multiSelectable (i.e. only one can be marked \"selected\" at a time)\n            options.multiSelectable = false;\n            super(player, options);\n        }\n\n        /**\n         * Handle text track change\n         *\n         * @param {Event} event\n         *        The event that caused this function to run\n         */\n        handleTracksChange(event) {\n            const tracks = this.player().textTracks();\n            let shouldBeSelected = true;\n            for (let i = 0, l = tracks.length; i < l; i++) {\n                const track = tracks[i];\n                if (this.options_.kinds.indexOf(track.kind) > -1 && track.mode === 'showing') {\n                    shouldBeSelected = false;\n                    break;\n                }\n            }\n\n            // Prevent redundant selected() calls because they may cause\n            // screen readers to read the appended control text unnecessarily\n            if (shouldBeSelected !== this.isSelected_) {\n                this.selected(shouldBeSelected);\n            }\n        }\n        handleSelectedLanguageChange(event) {\n            const tracks = this.player().textTracks();\n            let allHidden = true;\n            for (let i = 0, l = tracks.length; i < l; i++) {\n                const track = tracks[i];\n                if (['captions', 'descriptions', 'subtitles'].indexOf(track.kind) > -1 && track.mode === 'showing') {\n                    allHidden = false;\n                    break;\n                }\n            }\n            if (allHidden) {\n                this.player_.cache_.selectedLanguage = {\n                    enabled: false\n                };\n            }\n        }\n\n        /**\n         * Update control text and label on languagechange\n         */\n        handleLanguagechange() {\n            this.$('.vjs-menu-item-text').textContent = this.player_.localize(this.options_.label);\n            super.handleLanguagechange();\n        }\n    }\n    Component$1.registerComponent('OffTextTrackMenuItem', OffTextTrackMenuItem);\n\n    /**\n     * @file text-track-button.js\n     */\n\n    /**\n     * The base class for buttons that toggle specific text track types (e.g. subtitles)\n     *\n     * @extends MenuButton\n     */\n    class TextTrackButton extends TrackButton {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options={}]\n         *        The key/value store of player options.\n         */\n        constructor(player, options = {}) {\n            options.tracks = player.textTracks();\n            super(player, options);\n        }\n\n        /**\n         * Create a menu item for each text track\n         *\n         * @param {TextTrackMenuItem[]} [items=[]]\n         *        Existing array of items to use during creation\n         *\n         * @return {TextTrackMenuItem[]}\n         *         Array of menu items that were created\n         */\n        createItems(items = [], TrackMenuItem = TextTrackMenuItem) {\n            // Label is an override for the [track] off label\n            // USed to localise captions/subtitles\n            let label;\n            if (this.label_) {\n                label = `${this.label_} off`;\n            }\n            // Add an OFF menu item to turn all tracks off\n            items.push(new OffTextTrackMenuItem(this.player_, {\n                kinds: this.kinds_,\n                kind: this.kind_,\n                label\n            }));\n            this.hideThreshold_ += 1;\n            const tracks = this.player_.textTracks();\n            if (!Array.isArray(this.kinds_)) {\n                this.kinds_ = [this.kind_];\n            }\n            for (let i = 0; i < tracks.length; i++) {\n                const track = tracks[i];\n\n                // only add tracks that are of an appropriate kind and have a label\n                if (this.kinds_.indexOf(track.kind) > -1) {\n                    const item = new TrackMenuItem(this.player_, {\n                        track,\n                        kinds: this.kinds_,\n                        kind: this.kind_,\n                        // MenuItem is selectable\n                        selectable: true,\n                        // MenuItem is NOT multiSelectable (i.e. only one can be marked \"selected\" at a time)\n                        multiSelectable: false\n                    });\n                    item.addClass(`vjs-${track.kind}-menu-item`);\n                    items.push(item);\n                }\n            }\n            return items;\n        }\n    }\n    Component$1.registerComponent('TextTrackButton', TextTrackButton);\n\n    /**\n     * @file chapters-track-menu-item.js\n     */\n\n    /**\n     * The chapter track menu item\n     *\n     * @extends MenuItem\n     */\n    class ChaptersTrackMenuItem extends MenuItem {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            const track = options.track;\n            const cue = options.cue;\n            const currentTime = player.currentTime();\n\n            // Modify options for parent MenuItem class's init.\n            options.selectable = true;\n            options.multiSelectable = false;\n            options.label = cue.text;\n            options.selected = cue.startTime <= currentTime && currentTime < cue.endTime;\n            super(player, options);\n            this.track = track;\n            this.cue = cue;\n        }\n\n        /**\n         * This gets called when an `ChaptersTrackMenuItem` is \"clicked\". See\n         * {@link ClickableComponent} for more detailed information on what a click can be.\n         *\n         * @param {Event} [event]\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            super.handleClick();\n            this.player_.currentTime(this.cue.startTime);\n        }\n    }\n    Component$1.registerComponent('ChaptersTrackMenuItem', ChaptersTrackMenuItem);\n\n    /**\n     * @file chapters-button.js\n     */\n\n    /**\n     * The button component for toggling and selecting chapters\n     * Chapters act much differently than other text tracks\n     * Cues are navigation vs. other tracks of alternative languages\n     *\n     * @extends TextTrackButton\n     */\n    class ChaptersButton extends TextTrackButton {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {Function} [ready]\n         *        The function to call when this function is ready.\n         */\n        constructor(player, options, ready) {\n            super(player, options, ready);\n            this.selectCurrentItem_ = () => {\n                this.items.forEach(item => {\n                    item.selected(this.track_.activeCues[0] === item.cue);\n                });\n            };\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-chapters-button ${super.buildCSSClass()}`;\n        }\n        buildWrapperCSSClass() {\n            return `vjs-chapters-button ${super.buildWrapperCSSClass()}`;\n        }\n\n        /**\n         * Update the menu based on the current state of its items.\n         *\n         * @param {Event} [event]\n         *        An event that triggered this function to run.\n         *\n         * @listens TextTrackList#addtrack\n         * @listens TextTrackList#removetrack\n         * @listens TextTrackList#change\n         */\n        update(event) {\n            if (event && event.track && event.track.kind !== 'chapters') {\n                return;\n            }\n            const track = this.findChaptersTrack();\n            if (track !== this.track_) {\n                this.setTrack(track);\n                super.update();\n            } else if (!this.items || track && track.cues && track.cues.length !== this.items.length) {\n                // Update the menu initially or if the number of cues has changed since set\n                super.update();\n            }\n        }\n\n        /**\n         * Set the currently selected track for the chapters button.\n         *\n         * @param {TextTrack} track\n         *        The new track to select. Nothing will change if this is the currently selected\n         *        track.\n         */\n        setTrack(track) {\n            if (this.track_ === track) {\n                return;\n            }\n            if (!this.updateHandler_) {\n                this.updateHandler_ = this.update.bind(this);\n            }\n\n            // here this.track_ refers to the old track instance\n            if (this.track_) {\n                const remoteTextTrackEl = this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);\n                if (remoteTextTrackEl) {\n                    remoteTextTrackEl.removeEventListener('load', this.updateHandler_);\n                }\n                this.track_.removeEventListener('cuechange', this.selectCurrentItem_);\n                this.track_ = null;\n            }\n            this.track_ = track;\n\n            // here this.track_ refers to the new track instance\n            if (this.track_) {\n                this.track_.mode = 'hidden';\n                const remoteTextTrackEl = this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);\n                if (remoteTextTrackEl) {\n                    remoteTextTrackEl.addEventListener('load', this.updateHandler_);\n                }\n                this.track_.addEventListener('cuechange', this.selectCurrentItem_);\n            }\n        }\n\n        /**\n         * Find the track object that is currently in use by this ChaptersButton\n         *\n         * @return {TextTrack|undefined}\n         *         The current track or undefined if none was found.\n         */\n        findChaptersTrack() {\n            const tracks = this.player_.textTracks() || [];\n            for (let i = tracks.length - 1; i >= 0; i--) {\n                // We will always choose the last track as our chaptersTrack\n                const track = tracks[i];\n                if (track.kind === this.kind_) {\n                    return track;\n                }\n            }\n        }\n\n        /**\n         * Get the caption for the ChaptersButton based on the track label. This will also\n         * use the current tracks localized kind as a fallback if a label does not exist.\n         *\n         * @return {string}\n         *         The tracks current label or the localized track kind.\n         */\n        getMenuCaption() {\n            if (this.track_ && this.track_.label) {\n                return this.track_.label;\n            }\n            return this.localize(toTitleCase$1(this.kind_));\n        }\n\n        /**\n         * Create menu from chapter track\n         *\n         * @return { import('../../menu/menu').default }\n         *         New menu for the chapter buttons\n         */\n        createMenu() {\n            this.options_.title = this.getMenuCaption();\n            return super.createMenu();\n        }\n\n        /**\n         * Create a menu item for each text track\n         *\n         * @return  { import('./text-track-menu-item').default[] }\n         *         Array of menu items\n         */\n        createItems() {\n            const items = [];\n            if (!this.track_) {\n                return items;\n            }\n            const cues = this.track_.cues;\n            if (!cues) {\n                return items;\n            }\n            for (let i = 0, l = cues.length; i < l; i++) {\n                const cue = cues[i];\n                const mi = new ChaptersTrackMenuItem(this.player_, {\n                    track: this.track_,\n                    cue\n                });\n                items.push(mi);\n            }\n            return items;\n        }\n    }\n\n    /**\n     * `kind` of TextTrack to look for to associate it with this menu.\n     *\n     * @type {string}\n     * @private\n     */\n    ChaptersButton.prototype.kind_ = 'chapters';\n\n    /**\n     * The text that should display over the `ChaptersButton`s controls. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    ChaptersButton.prototype.controlText_ = 'Chapters';\n    Component$1.registerComponent('ChaptersButton', ChaptersButton);\n\n    /**\n     * @file descriptions-button.js\n     */\n\n    /**\n     * The button component for toggling and selecting descriptions\n     *\n     * @extends TextTrackButton\n     */\n    class DescriptionsButton extends TextTrackButton {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {Function} [ready]\n         *        The function to call when this component is ready.\n         */\n        constructor(player, options, ready) {\n            super(player, options, ready);\n            const tracks = player.textTracks();\n            const changeHandler = bind_(this, this.handleTracksChange);\n            tracks.addEventListener('change', changeHandler);\n            this.on('dispose', function () {\n                tracks.removeEventListener('change', changeHandler);\n            });\n        }\n\n        /**\n         * Handle text track change\n         *\n         * @param {Event} event\n         *        The event that caused this function to run\n         *\n         * @listens TextTrackList#change\n         */\n        handleTracksChange(event) {\n            const tracks = this.player().textTracks();\n            let disabled = false;\n\n            // Check whether a track of a different kind is showing\n            for (let i = 0, l = tracks.length; i < l; i++) {\n                const track = tracks[i];\n                if (track.kind !== this.kind_ && track.mode === 'showing') {\n                    disabled = true;\n                    break;\n                }\n            }\n\n            // If another track is showing, disable this menu button\n            if (disabled) {\n                this.disable();\n            } else {\n                this.enable();\n            }\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-descriptions-button ${super.buildCSSClass()}`;\n        }\n        buildWrapperCSSClass() {\n            return `vjs-descriptions-button ${super.buildWrapperCSSClass()}`;\n        }\n    }\n\n    /**\n     * `kind` of TextTrack to look for to associate it with this menu.\n     *\n     * @type {string}\n     * @private\n     */\n    DescriptionsButton.prototype.kind_ = 'descriptions';\n\n    /**\n     * The text that should display over the `DescriptionsButton`s controls. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    DescriptionsButton.prototype.controlText_ = 'Descriptions';\n    Component$1.registerComponent('DescriptionsButton', DescriptionsButton);\n\n    /**\n     * @file subtitles-button.js\n     */\n\n    /**\n     * The button component for toggling and selecting subtitles\n     *\n     * @extends TextTrackButton\n     */\n    class SubtitlesButton extends TextTrackButton {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {Function} [ready]\n         *        The function to call when this component is ready.\n         */\n        constructor(player, options, ready) {\n            super(player, options, ready);\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-subtitles-button ${super.buildCSSClass()}`;\n        }\n        buildWrapperCSSClass() {\n            return `vjs-subtitles-button ${super.buildWrapperCSSClass()}`;\n        }\n    }\n\n    /**\n     * `kind` of TextTrack to look for to associate it with this menu.\n     *\n     * @type {string}\n     * @private\n     */\n    SubtitlesButton.prototype.kind_ = 'subtitles';\n\n    /**\n     * The text that should display over the `SubtitlesButton`s controls. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    SubtitlesButton.prototype.controlText_ = 'Subtitles';\n    Component$1.registerComponent('SubtitlesButton', SubtitlesButton);\n\n    /**\n     * @file caption-settings-menu-item.js\n     */\n\n    /**\n     * The menu item for caption track settings menu\n     *\n     * @extends TextTrackMenuItem\n     */\n    class CaptionSettingsMenuItem extends TextTrackMenuItem {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            options.track = {\n                player,\n                kind: options.kind,\n                label: options.kind + ' settings',\n                selectable: false,\n                default: false,\n                mode: 'disabled'\n            };\n\n            // CaptionSettingsMenuItem has no concept of 'selected'\n            options.selectable = false;\n            options.name = 'CaptionSettingsMenuItem';\n            super(player, options);\n            this.addClass('vjs-texttrack-settings');\n            this.controlText(', opens ' + options.kind + ' settings dialog');\n        }\n\n        /**\n         * This gets called when an `CaptionSettingsMenuItem` is \"clicked\". See\n         * {@link ClickableComponent} for more detailed information on what a click can be.\n         *\n         * @param {Event} [event]\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            this.player().getChild('textTrackSettings').open();\n        }\n\n        /**\n         * Update control text and label on languagechange\n         */\n        handleLanguagechange() {\n            this.$('.vjs-menu-item-text').textContent = this.player_.localize(this.options_.kind + ' settings');\n            super.handleLanguagechange();\n        }\n    }\n    Component$1.registerComponent('CaptionSettingsMenuItem', CaptionSettingsMenuItem);\n\n    /**\n     * @file captions-button.js\n     */\n\n    /**\n     * The button component for toggling and selecting captions\n     *\n     * @extends TextTrackButton\n     */\n    class CaptionsButton extends TextTrackButton {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {Function} [ready]\n         *        The function to call when this component is ready.\n         */\n        constructor(player, options, ready) {\n            super(player, options, ready);\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-captions-button ${super.buildCSSClass()}`;\n        }\n        buildWrapperCSSClass() {\n            return `vjs-captions-button ${super.buildWrapperCSSClass()}`;\n        }\n\n        /**\n         * Create caption menu items\n         *\n         * @return {CaptionSettingsMenuItem[]}\n         *         The array of current menu items.\n         */\n        createItems() {\n            const items = [];\n            if (!(this.player().tech_ && this.player().tech_.featuresNativeTextTracks) && this.player().getChild('textTrackSettings')) {\n                items.push(new CaptionSettingsMenuItem(this.player_, {\n                    kind: this.kind_\n                }));\n                this.hideThreshold_ += 1;\n            }\n            return super.createItems(items);\n        }\n    }\n\n    /**\n     * `kind` of TextTrack to look for to associate it with this menu.\n     *\n     * @type {string}\n     * @private\n     */\n    CaptionsButton.prototype.kind_ = 'captions';\n\n    /**\n     * The text that should display over the `CaptionsButton`s controls. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    CaptionsButton.prototype.controlText_ = 'Captions';\n    Component$1.registerComponent('CaptionsButton', CaptionsButton);\n\n    /**\n     * @file subs-caps-menu-item.js\n     */\n\n    /**\n     * SubsCapsMenuItem has an [cc] icon to distinguish captions from subtitles\n     * in the SubsCapsMenu.\n     *\n     * @extends TextTrackMenuItem\n     */\n    class SubsCapsMenuItem extends TextTrackMenuItem {\n        createEl(type, props, attrs) {\n            const el = super.createEl(type, props, attrs);\n            const parentSpan = el.querySelector('.vjs-menu-item-text');\n            if (this.options_.track.kind === 'captions') {\n                parentSpan.appendChild(createEl('span', {\n                    className: 'vjs-icon-placeholder'\n                }, {\n                    'aria-hidden': true\n                }));\n                parentSpan.appendChild(createEl('span', {\n                    className: 'vjs-control-text',\n                    // space added as the text will visually flow with the\n                    // label\n                    textContent: ` ${this.localize('Captions')}`\n                }));\n            }\n            return el;\n        }\n    }\n    Component$1.registerComponent('SubsCapsMenuItem', SubsCapsMenuItem);\n\n    /**\n     * @file sub-caps-button.js\n     */\n\n    /**\n     * The button component for toggling and selecting captions and/or subtitles\n     *\n     * @extends TextTrackButton\n     */\n    class SubsCapsButton extends TextTrackButton {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {Function} [ready]\n         *        The function to call when this component is ready.\n         */\n        constructor(player, options = {}) {\n            super(player, options);\n\n            // Although North America uses \"captions\" in most cases for\n            // \"captions and subtitles\" other locales use \"subtitles\"\n            this.label_ = 'subtitles';\n            if (['en', 'en-us', 'en-ca', 'fr-ca'].indexOf(this.player_.language_) > -1) {\n                this.label_ = 'captions';\n            }\n            this.menuButton_.controlText(toTitleCase$1(this.label_));\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-subs-caps-button ${super.buildCSSClass()}`;\n        }\n        buildWrapperCSSClass() {\n            return `vjs-subs-caps-button ${super.buildWrapperCSSClass()}`;\n        }\n\n        /**\n         * Create caption/subtitles menu items\n         *\n         * @return {CaptionSettingsMenuItem[]}\n         *         The array of current menu items.\n         */\n        createItems() {\n            let items = [];\n            if (!(this.player().tech_ && this.player().tech_.featuresNativeTextTracks) && this.player().getChild('textTrackSettings')) {\n                items.push(new CaptionSettingsMenuItem(this.player_, {\n                    kind: this.label_\n                }));\n                this.hideThreshold_ += 1;\n            }\n            items = super.createItems(items, SubsCapsMenuItem);\n            return items;\n        }\n    }\n\n    /**\n     * `kind`s of TextTrack to look for to associate it with this menu.\n     *\n     * @type {array}\n     * @private\n     */\n    SubsCapsButton.prototype.kinds_ = ['captions', 'subtitles'];\n\n    /**\n     * The text that should display over the `SubsCapsButton`s controls.\n     *\n     *\n     * @type {string}\n     * @protected\n     */\n    SubsCapsButton.prototype.controlText_ = 'Subtitles';\n    Component$1.registerComponent('SubsCapsButton', SubsCapsButton);\n\n    /**\n     * @file audio-track-menu-item.js\n     */\n\n    /**\n     * An {@link AudioTrack} {@link MenuItem}\n     *\n     * @extends MenuItem\n     */\n    class AudioTrackMenuItem extends MenuItem {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            const track = options.track;\n            const tracks = player.audioTracks();\n\n            // Modify options for parent MenuItem class's init.\n            options.label = track.label || track.language || 'Unknown';\n            options.selected = track.enabled;\n            super(player, options);\n            this.track = track;\n            this.addClass(`vjs-${track.kind}-menu-item`);\n            const changeHandler = (...args) => {\n                this.handleTracksChange.apply(this, args);\n            };\n            tracks.addEventListener('change', changeHandler);\n            this.on('dispose', () => {\n                tracks.removeEventListener('change', changeHandler);\n            });\n        }\n        createEl(type, props, attrs) {\n            const el = super.createEl(type, props, attrs);\n            const parentSpan = el.querySelector('.vjs-menu-item-text');\n            if (this.options_.track.kind === 'main-desc') {\n                parentSpan.appendChild(createEl('span', {\n                    className: 'vjs-icon-placeholder'\n                }, {\n                    'aria-hidden': true\n                }));\n                parentSpan.appendChild(createEl('span', {\n                    className: 'vjs-control-text',\n                    textContent: ' ' + this.localize('Descriptions')\n                }));\n            }\n            return el;\n        }\n\n        /**\n         * This gets called when an `AudioTrackMenuItem is \"clicked\". See {@link ClickableComponent}\n         * for more detailed information on what a click can be.\n         *\n         * @param {Event} [event]\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            super.handleClick(event);\n\n            // the audio track list will automatically toggle other tracks\n            // off for us.\n            this.track.enabled = true;\n\n            // when native audio tracks are used, we want to make sure that other tracks are turned off\n            if (this.player_.tech_.featuresNativeAudioTracks) {\n                const tracks = this.player_.audioTracks();\n                for (let i = 0; i < tracks.length; i++) {\n                    const track = tracks[i];\n\n                    // skip the current track since we enabled it above\n                    if (track === this.track) {\n                        continue;\n                    }\n                    track.enabled = track === this.track;\n                }\n            }\n        }\n\n        /**\n         * Handle any {@link AudioTrack} change.\n         *\n         * @param {Event} [event]\n         *        The {@link AudioTrackList#change} event that caused this to run.\n         *\n         * @listens AudioTrackList#change\n         */\n        handleTracksChange(event) {\n            this.selected(this.track.enabled);\n        }\n    }\n    Component$1.registerComponent('AudioTrackMenuItem', AudioTrackMenuItem);\n\n    /**\n     * @file audio-track-button.js\n     */\n\n    /**\n     * The base class for buttons that toggle specific {@link AudioTrack} types.\n     *\n     * @extends TrackButton\n     */\n    class AudioTrackButton extends TrackButton {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param {Player} player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options={}]\n         *        The key/value store of player options.\n         */\n        constructor(player, options = {}) {\n            options.tracks = player.audioTracks();\n            super(player, options);\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-audio-button ${super.buildCSSClass()}`;\n        }\n        buildWrapperCSSClass() {\n            return `vjs-audio-button ${super.buildWrapperCSSClass()}`;\n        }\n\n        /**\n         * Create a menu item for each audio track\n         *\n         * @param {AudioTrackMenuItem[]} [items=[]]\n         *        An array of existing menu items to use.\n         *\n         * @return {AudioTrackMenuItem[]}\n         *         An array of menu items\n         */\n        createItems(items = []) {\n            // if there's only one audio track, there no point in showing it\n            this.hideThreshold_ = 1;\n            const tracks = this.player_.audioTracks();\n            for (let i = 0; i < tracks.length; i++) {\n                const track = tracks[i];\n                items.push(new AudioTrackMenuItem(this.player_, {\n                    track,\n                    // MenuItem is selectable\n                    selectable: true,\n                    // MenuItem is NOT multiSelectable (i.e. only one can be marked \"selected\" at a time)\n                    multiSelectable: false\n                }));\n            }\n            return items;\n        }\n    }\n\n    /**\n     * The text that should display over the `AudioTrackButton`s controls. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    AudioTrackButton.prototype.controlText_ = 'Audio Track';\n    Component$1.registerComponent('AudioTrackButton', AudioTrackButton);\n\n    /**\n     * @file playback-rate-menu-item.js\n     */\n\n    /**\n     * The specific menu item type for selecting a playback rate.\n     *\n     * @extends MenuItem\n     */\n    class PlaybackRateMenuItem extends MenuItem {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            const label = options.rate;\n            const rate = parseFloat(label, 10);\n\n            // Modify options for parent MenuItem class's init.\n            options.label = label;\n            options.selected = rate === player.playbackRate();\n            options.selectable = true;\n            options.multiSelectable = false;\n            super(player, options);\n            this.label = label;\n            this.rate = rate;\n            this.on(player, 'ratechange', e => this.update(e));\n        }\n\n        /**\n         * This gets called when an `PlaybackRateMenuItem` is \"clicked\". See\n         * {@link ClickableComponent} for more detailed information on what a click can be.\n         *\n         * @param {Event} [event]\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            super.handleClick();\n            this.player().playbackRate(this.rate);\n        }\n\n        /**\n         * Update the PlaybackRateMenuItem when the playbackrate changes.\n         *\n         * @param {Event} [event]\n         *        The `ratechange` event that caused this function to run.\n         *\n         * @listens Player#ratechange\n         */\n        update(event) {\n            this.selected(this.player().playbackRate() === this.rate);\n        }\n    }\n\n    /**\n     * The text that should display over the `PlaybackRateMenuItem`s controls. Added for localization.\n     *\n     * @type {string}\n     * @private\n     */\n    PlaybackRateMenuItem.prototype.contentElType = 'button';\n    Component$1.registerComponent('PlaybackRateMenuItem', PlaybackRateMenuItem);\n\n    /**\n     * @file playback-rate-menu-button.js\n     */\n\n    /**\n     * The component for controlling the playback rate.\n     *\n     * @extends MenuButton\n     */\n    class PlaybackRateMenuButton extends MenuButton {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.menuButton_.el_.setAttribute('aria-describedby', this.labelElId_);\n            this.updateVisibility();\n            this.updateLabel();\n            this.on(player, 'loadstart', e => this.updateVisibility(e));\n            this.on(player, 'ratechange', e => this.updateLabel(e));\n            this.on(player, 'playbackrateschange', e => this.handlePlaybackRateschange(e));\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            const el = super.createEl();\n            this.labelElId_ = 'vjs-playback-rate-value-label-' + this.id_;\n            this.labelEl_ = createEl('div', {\n                className: 'vjs-playback-rate-value',\n                id: this.labelElId_,\n                textContent: '1x'\n            });\n            el.appendChild(this.labelEl_);\n            return el;\n        }\n        dispose() {\n            this.labelEl_ = null;\n            super.dispose();\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-playback-rate ${super.buildCSSClass()}`;\n        }\n        buildWrapperCSSClass() {\n            return `vjs-playback-rate ${super.buildWrapperCSSClass()}`;\n        }\n\n        /**\n         * Create the list of menu items. Specific to each subclass.\n         *\n         */\n        createItems() {\n            const rates = this.playbackRates();\n            const items = [];\n            for (let i = rates.length - 1; i >= 0; i--) {\n                items.push(new PlaybackRateMenuItem(this.player(), {\n                    rate: rates[i] + 'x'\n                }));\n            }\n            return items;\n        }\n\n        /**\n         * On playbackrateschange, update the menu to account for the new items.\n         *\n         * @listens Player#playbackrateschange\n         */\n        handlePlaybackRateschange(event) {\n            this.update();\n        }\n\n        /**\n         * Get possible playback rates\n         *\n         * @return {Array}\n         *         All possible playback rates\n         */\n        playbackRates() {\n            const player = this.player();\n            return player.playbackRates && player.playbackRates() || [];\n        }\n\n        /**\n         * Get whether playback rates is supported by the tech\n         * and an array of playback rates exists\n         *\n         * @return {boolean}\n         *         Whether changing playback rate is supported\n         */\n        playbackRateSupported() {\n            return this.player().tech_ && this.player().tech_.featuresPlaybackRate && this.playbackRates() && this.playbackRates().length > 0;\n        }\n\n        /**\n         * Hide playback rate controls when they're no playback rate options to select\n         *\n         * @param {Event} [event]\n         *        The event that caused this function to run.\n         *\n         * @listens Player#loadstart\n         */\n        updateVisibility(event) {\n            if (this.playbackRateSupported()) {\n                this.removeClass('vjs-hidden');\n            } else {\n                this.addClass('vjs-hidden');\n            }\n        }\n\n        /**\n         * Update button label when rate changed\n         *\n         * @param {Event} [event]\n         *        The event that caused this function to run.\n         *\n         * @listens Player#ratechange\n         */\n        updateLabel(event) {\n            if (this.playbackRateSupported()) {\n                this.labelEl_.textContent = this.player().playbackRate() + 'x';\n            }\n        }\n    }\n\n    /**\n     * The text that should display over the `PlaybackRateMenuButton`s controls.\n     *\n     * Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    PlaybackRateMenuButton.prototype.controlText_ = 'Playback Rate';\n    Component$1.registerComponent('PlaybackRateMenuButton', PlaybackRateMenuButton);\n\n    /**\n     * @file spacer.js\n     */\n\n    /**\n     * Just an empty spacer element that can be used as an append point for plugins, etc.\n     * Also can be used to create space between elements when necessary.\n     *\n     * @extends Component\n     */\n    class Spacer extends Component$1 {\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-spacer ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl(tag = 'div', props = {}, attributes = {}) {\n            if (!props.className) {\n                props.className = this.buildCSSClass();\n            }\n            return super.createEl(tag, props, attributes);\n        }\n    }\n    Component$1.registerComponent('Spacer', Spacer);\n\n    /**\n     * @file custom-control-spacer.js\n     */\n\n    /**\n     * Spacer specifically meant to be used as an insertion point for new plugins, etc.\n     *\n     * @extends Spacer\n     */\n    class CustomControlSpacer extends Spacer {\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-custom-control-spacer ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: this.buildCSSClass(),\n                // No-flex/table-cell mode requires there be some content\n                // in the cell to fill the remaining space of the table.\n                textContent: '\\u00a0'\n            });\n        }\n    }\n    Component$1.registerComponent('CustomControlSpacer', CustomControlSpacer);\n\n    /**\n     * @file control-bar.js\n     */\n\n    /**\n     * Container of main controls.\n     *\n     * @extends Component\n     */\n    class ControlBar extends Component$1 {\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-control-bar',\n                dir: 'ltr'\n            });\n        }\n    }\n\n    /**\n     * Default options for `ControlBar`\n     *\n     * @type {Object}\n     * @private\n     */\n    ControlBar.prototype.options_ = {\n        children: ['playToggle', 'skipBackward', 'skipForward', 'volumePanel', 'currentTimeDisplay', 'timeDivider', 'durationDisplay', 'progressControl', 'liveDisplay', 'seekToLive', 'remainingTimeDisplay', 'customControlSpacer', 'playbackRateMenuButton', 'chaptersButton', 'descriptionsButton', 'subsCapsButton', 'audioTrackButton', 'fullscreenToggle']\n    };\n    if ('exitPictureInPicture' in document) {\n        ControlBar.prototype.options_.children.splice(ControlBar.prototype.options_.children.length - 1, 0, 'pictureInPictureToggle');\n    }\n    Component$1.registerComponent('ControlBar', ControlBar);\n\n    /**\n     * @file error-display.js\n     */\n\n    /**\n     * A display that indicates an error has occurred. This means that the video\n     * is unplayable.\n     *\n     * @extends ModalDialog\n     */\n    class ErrorDisplay extends ModalDialog {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param  { import('./player').default } player\n         *         The `Player` that this class should be attached to.\n         *\n         * @param  {Object} [options]\n         *         The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.on(player, 'error', e => this.open(e));\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         *\n         * @deprecated Since version 5.\n         */\n        buildCSSClass() {\n            return `vjs-error-display ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * Gets the localized error message based on the `Player`s error.\n         *\n         * @return {string}\n         *         The `Player`s error message localized or an empty string.\n         */\n        content() {\n            const error = this.player().error();\n            return error ? this.localize(error.message) : '';\n        }\n    }\n\n    /**\n     * The default options for an `ErrorDisplay`.\n     *\n     * @private\n     */\n    ErrorDisplay.prototype.options_ = Object.assign({}, ModalDialog.prototype.options_, {\n        pauseOnOpen: false,\n        fillAlways: true,\n        temporary: false,\n        uncloseable: true\n    });\n    Component$1.registerComponent('ErrorDisplay', ErrorDisplay);\n\n    /**\n     * @file text-track-settings.js\n     */\n    const LOCAL_STORAGE_KEY$1 = 'vjs-text-track-settings';\n    const COLOR_BLACK = ['#000', 'Black'];\n    const COLOR_BLUE = ['#00F', 'Blue'];\n    const COLOR_CYAN = ['#0FF', 'Cyan'];\n    const COLOR_GREEN = ['#0F0', 'Green'];\n    const COLOR_MAGENTA = ['#F0F', 'Magenta'];\n    const COLOR_RED = ['#F00', 'Red'];\n    const COLOR_WHITE = ['#FFF', 'White'];\n    const COLOR_YELLOW = ['#FF0', 'Yellow'];\n    const OPACITY_OPAQUE = ['1', 'Opaque'];\n    const OPACITY_SEMI = ['0.5', 'Semi-Transparent'];\n    const OPACITY_TRANS = ['0', 'Transparent'];\n\n    // Configuration for the various <select> elements in the DOM of this component.\n    //\n    // Possible keys include:\n    //\n    // `default`:\n    //   The default option index. Only needs to be provided if not zero.\n    // `parser`:\n    //   A function which is used to parse the value from the selected option in\n    //   a customized way.\n    // `selector`:\n    //   The selector used to find the associated <select> element.\n    const selectConfigs = {\n        backgroundColor: {\n            selector: '.vjs-bg-color > select',\n            id: 'captions-background-color-%s',\n            label: 'Color',\n            options: [COLOR_BLACK, COLOR_WHITE, COLOR_RED, COLOR_GREEN, COLOR_BLUE, COLOR_YELLOW, COLOR_MAGENTA, COLOR_CYAN]\n        },\n        backgroundOpacity: {\n            selector: '.vjs-bg-opacity > select',\n            id: 'captions-background-opacity-%s',\n            label: 'Opacity',\n            options: [OPACITY_OPAQUE, OPACITY_SEMI, OPACITY_TRANS]\n        },\n        color: {\n            selector: '.vjs-text-color > select',\n            id: 'captions-foreground-color-%s',\n            label: 'Color',\n            options: [COLOR_WHITE, COLOR_BLACK, COLOR_RED, COLOR_GREEN, COLOR_BLUE, COLOR_YELLOW, COLOR_MAGENTA, COLOR_CYAN]\n        },\n        edgeStyle: {\n            selector: '.vjs-edge-style > select',\n            id: '%s',\n            label: 'Text Edge Style',\n            options: [['none', 'None'], ['raised', 'Raised'], ['depressed', 'Depressed'], ['uniform', 'Uniform'], ['dropshadow', 'Dropshadow']]\n        },\n        fontFamily: {\n            selector: '.vjs-font-family > select',\n            id: 'captions-font-family-%s',\n            label: 'Font Family',\n            options: [['proportionalSansSerif', 'Proportional Sans-Serif'], ['monospaceSansSerif', 'Monospace Sans-Serif'], ['proportionalSerif', 'Proportional Serif'], ['monospaceSerif', 'Monospace Serif'], ['casual', 'Casual'], ['script', 'Script'], ['small-caps', 'Small Caps']]\n        },\n        fontPercent: {\n            selector: '.vjs-font-percent > select',\n            id: 'captions-font-size-%s',\n            label: 'Font Size',\n            options: [['0.50', '50%'], ['0.75', '75%'], ['1.00', '100%'], ['1.25', '125%'], ['1.50', '150%'], ['1.75', '175%'], ['2.00', '200%'], ['3.00', '300%'], ['4.00', '400%']],\n            default: 2,\n            parser: v => v === '1.00' ? null : Number(v)\n        },\n        textOpacity: {\n            selector: '.vjs-text-opacity > select',\n            id: 'captions-foreground-opacity-%s',\n            label: 'Opacity',\n            options: [OPACITY_OPAQUE, OPACITY_SEMI]\n        },\n        // Options for this object are defined below.\n        windowColor: {\n            selector: '.vjs-window-color > select',\n            id: 'captions-window-color-%s',\n            label: 'Color'\n        },\n        // Options for this object are defined below.\n        windowOpacity: {\n            selector: '.vjs-window-opacity > select',\n            id: 'captions-window-opacity-%s',\n            label: 'Opacity',\n            options: [OPACITY_TRANS, OPACITY_SEMI, OPACITY_OPAQUE]\n        }\n    };\n    selectConfigs.windowColor.options = selectConfigs.backgroundColor.options;\n\n    /**\n     * Get the actual value of an option.\n     *\n     * @param  {string} value\n     *         The value to get\n     *\n     * @param  {Function} [parser]\n     *         Optional function to adjust the value.\n     *\n     * @return {*}\n     *         - Will be `undefined` if no value exists\n     *         - Will be `undefined` if the given value is \"none\".\n     *         - Will be the actual value otherwise.\n     *\n     * @private\n     */\n    function parseOptionValue(value, parser) {\n        if (parser) {\n            value = parser(value);\n        }\n        if (value && value !== 'none') {\n            return value;\n        }\n    }\n\n    /**\n     * Gets the value of the selected <option> element within a <select> element.\n     *\n     * @param  {Element} el\n     *         the element to look in\n     *\n     * @param  {Function} [parser]\n     *         Optional function to adjust the value.\n     *\n     * @return {*}\n     *         - Will be `undefined` if no value exists\n     *         - Will be `undefined` if the given value is \"none\".\n     *         - Will be the actual value otherwise.\n     *\n     * @private\n     */\n    function getSelectedOptionValue(el, parser) {\n        const value = el.options[el.options.selectedIndex].value;\n        return parseOptionValue(value, parser);\n    }\n\n    /**\n     * Sets the selected <option> element within a <select> element based on a\n     * given value.\n     *\n     * @param {Element} el\n     *        The element to look in.\n     *\n     * @param {string} value\n     *        the property to look on.\n     *\n     * @param {Function} [parser]\n     *        Optional function to adjust the value before comparing.\n     *\n     * @private\n     */\n    function setSelectedOption(el, value, parser) {\n        if (!value) {\n            return;\n        }\n        for (let i = 0; i < el.options.length; i++) {\n            if (parseOptionValue(el.options[i].value, parser) === value) {\n                el.selectedIndex = i;\n                break;\n            }\n        }\n    }\n\n    /**\n     * Manipulate Text Tracks settings.\n     *\n     * @extends ModalDialog\n     */\n    class TextTrackSettings extends ModalDialog {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../player').default } player\n         *         The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *         The key/value store of player options.\n         */\n        constructor(player, options) {\n            options.temporary = false;\n            super(player, options);\n            this.updateDisplay = this.updateDisplay.bind(this);\n\n            // fill the modal and pretend we have opened it\n            this.fill();\n            this.hasBeenOpened_ = this.hasBeenFilled_ = true;\n            this.endDialog = createEl('p', {\n                className: 'vjs-control-text',\n                textContent: this.localize('End of dialog window.')\n            });\n            this.el().appendChild(this.endDialog);\n            this.setDefaults();\n\n            // Grab `persistTextTrackSettings` from the player options if not passed in child options\n            if (options.persistTextTrackSettings === undefined) {\n                this.options_.persistTextTrackSettings = this.options_.playerOptions.persistTextTrackSettings;\n            }\n            this.on(this.$('.vjs-done-button'), 'click', () => {\n                this.saveSettings();\n                this.close();\n            });\n            this.on(this.$('.vjs-default-button'), 'click', () => {\n                this.setDefaults();\n                this.updateDisplay();\n            });\n            each(selectConfigs, config => {\n                this.on(this.$(config.selector), 'change', this.updateDisplay);\n            });\n            if (this.options_.persistTextTrackSettings) {\n                this.restoreSettings();\n            }\n        }\n        dispose() {\n            this.endDialog = null;\n            super.dispose();\n        }\n\n        /**\n         * Create a <select> element with configured options.\n         *\n         * @param {string} key\n         *        Configuration key to use during creation.\n         *\n         * @return {string}\n         *         An HTML string.\n         *\n         * @private\n         */\n        createElSelect_(key, legendId = '', type = 'label') {\n            const config = selectConfigs[key];\n            const id = config.id.replace('%s', this.id_);\n            const selectLabelledbyIds = [legendId, id].join(' ').trim();\n            return [`<${type} id=\"${id}\" class=\"${type === 'label' ? 'vjs-label' : ''}\">`, this.localize(config.label), `</${type}>`, `<select aria-labelledby=\"${selectLabelledbyIds}\">`].concat(config.options.map(o => {\n                const optionId = id + '-' + o[1].replace(/\\W+/g, '');\n                return [`<option id=\"${optionId}\" value=\"${o[0]}\" `, `aria-labelledby=\"${selectLabelledbyIds} ${optionId}\">`, this.localize(o[1]), '</option>'].join('');\n            })).concat('</select>').join('');\n        }\n\n        /**\n         * Create foreground color element for the component\n         *\n         * @return {string}\n         *         An HTML string.\n         *\n         * @private\n         */\n        createElFgColor_() {\n            const legendId = `captions-text-legend-${this.id_}`;\n            return ['<fieldset class=\"vjs-fg vjs-track-setting\">', `<legend id=\"${legendId}\">`, this.localize('Text'), '</legend>', '<span class=\"vjs-text-color\">', this.createElSelect_('color', legendId), '</span>', '<span class=\"vjs-text-opacity vjs-opacity\">', this.createElSelect_('textOpacity', legendId), '</span>', '</fieldset>'].join('');\n        }\n\n        /**\n         * Create background color element for the component\n         *\n         * @return {string}\n         *         An HTML string.\n         *\n         * @private\n         */\n        createElBgColor_() {\n            const legendId = `captions-background-${this.id_}`;\n            return ['<fieldset class=\"vjs-bg vjs-track-setting\">', `<legend id=\"${legendId}\">`, this.localize('Text Background'), '</legend>', '<span class=\"vjs-bg-color\">', this.createElSelect_('backgroundColor', legendId), '</span>', '<span class=\"vjs-bg-opacity vjs-opacity\">', this.createElSelect_('backgroundOpacity', legendId), '</span>', '</fieldset>'].join('');\n        }\n\n        /**\n         * Create window color element for the component\n         *\n         * @return {string}\n         *         An HTML string.\n         *\n         * @private\n         */\n        createElWinColor_() {\n            const legendId = `captions-window-${this.id_}`;\n            return ['<fieldset class=\"vjs-window vjs-track-setting\">', `<legend id=\"${legendId}\">`, this.localize('Caption Area Background'), '</legend>', '<span class=\"vjs-window-color\">', this.createElSelect_('windowColor', legendId), '</span>', '<span class=\"vjs-window-opacity vjs-opacity\">', this.createElSelect_('windowOpacity', legendId), '</span>', '</fieldset>'].join('');\n        }\n\n        /**\n         * Create color elements for the component\n         *\n         * @return {Element}\n         *         The element that was created\n         *\n         * @private\n         */\n        createElColors_() {\n            return createEl('div', {\n                className: 'vjs-track-settings-colors',\n                innerHTML: [this.createElFgColor_(), this.createElBgColor_(), this.createElWinColor_()].join('')\n            });\n        }\n\n        /**\n         * Create font elements for the component\n         *\n         * @return {Element}\n         *         The element that was created.\n         *\n         * @private\n         */\n        createElFont_() {\n            return createEl('div', {\n                className: 'vjs-track-settings-font',\n                innerHTML: ['<fieldset class=\"vjs-font-percent vjs-track-setting\">', this.createElSelect_('fontPercent', '', 'legend'), '</fieldset>', '<fieldset class=\"vjs-edge-style vjs-track-setting\">', this.createElSelect_('edgeStyle', '', 'legend'), '</fieldset>', '<fieldset class=\"vjs-font-family vjs-track-setting\">', this.createElSelect_('fontFamily', '', 'legend'), '</fieldset>'].join('')\n            });\n        }\n\n        /**\n         * Create controls for the component\n         *\n         * @return {Element}\n         *         The element that was created.\n         *\n         * @private\n         */\n        createElControls_() {\n            const defaultsDescription = this.localize('restore all settings to the default values');\n            return createEl('div', {\n                className: 'vjs-track-settings-controls',\n                innerHTML: [`<button type=\"button\" class=\"vjs-default-button\" title=\"${defaultsDescription}\">`, this.localize('Reset'), `<span class=\"vjs-control-text\"> ${defaultsDescription}</span>`, '</button>', `<button type=\"button\" class=\"vjs-done-button\">${this.localize('Done')}</button>`].join('')\n            });\n        }\n        content() {\n            return [this.createElColors_(), this.createElFont_(), this.createElControls_()];\n        }\n        label() {\n            return this.localize('Caption Settings Dialog');\n        }\n        description() {\n            return this.localize('Beginning of dialog window. Escape will cancel and close the window.');\n        }\n        buildCSSClass() {\n            return super.buildCSSClass() + ' vjs-text-track-settings';\n        }\n\n        /**\n         * Gets an object of text track settings (or null).\n         *\n         * @return {Object}\n         *         An object with config values parsed from the DOM or localStorage.\n         */\n        getValues() {\n            return reduce(selectConfigs, (accum, config, key) => {\n                const value = getSelectedOptionValue(this.$(config.selector), config.parser);\n                if (value !== undefined) {\n                    accum[key] = value;\n                }\n                return accum;\n            }, {});\n        }\n\n        /**\n         * Sets text track settings from an object of values.\n         *\n         * @param {Object} values\n         *        An object with config values parsed from the DOM or localStorage.\n         */\n        setValues(values) {\n            each(selectConfigs, (config, key) => {\n                setSelectedOption(this.$(config.selector), values[key], config.parser);\n            });\n        }\n\n        /**\n         * Sets all `<select>` elements to their default values.\n         */\n        setDefaults() {\n            each(selectConfigs, config => {\n                const index = config.hasOwnProperty('default') ? config.default : 0;\n                this.$(config.selector).selectedIndex = index;\n            });\n        }\n\n        /**\n         * Restore texttrack settings from localStorage\n         */\n        restoreSettings() {\n            let values;\n            try {\n                values = JSON.parse(window.localStorage.getItem(LOCAL_STORAGE_KEY$1));\n            } catch (err) {\n                log$1.warn(err);\n            }\n            if (values) {\n                this.setValues(values);\n            }\n        }\n\n        /**\n         * Save text track settings to localStorage\n         */\n        saveSettings() {\n            if (!this.options_.persistTextTrackSettings) {\n                return;\n            }\n            const values = this.getValues();\n            try {\n                if (Object.keys(values).length) {\n                    window.localStorage.setItem(LOCAL_STORAGE_KEY$1, JSON.stringify(values));\n                } else {\n                    window.localStorage.removeItem(LOCAL_STORAGE_KEY$1);\n                }\n            } catch (err) {\n                log$1.warn(err);\n            }\n        }\n\n        /**\n         * Update display of text track settings\n         */\n        updateDisplay() {\n            const ttDisplay = this.player_.getChild('textTrackDisplay');\n            if (ttDisplay) {\n                ttDisplay.updateDisplay();\n            }\n        }\n\n        /**\n         * conditionally blur the element and refocus the captions button\n         *\n         * @private\n         */\n        conditionalBlur_() {\n            this.previouslyActiveEl_ = null;\n            const cb = this.player_.controlBar;\n            const subsCapsBtn = cb && cb.subsCapsButton;\n            const ccBtn = cb && cb.captionsButton;\n            if (subsCapsBtn) {\n                subsCapsBtn.focus();\n            } else if (ccBtn) {\n                ccBtn.focus();\n            }\n        }\n\n        /**\n         * Repopulate dialog with new localizations on languagechange\n         */\n        handleLanguagechange() {\n            this.fill();\n        }\n    }\n    Component$1.registerComponent('TextTrackSettings', TextTrackSettings);\n\n    /**\n     * @file resize-manager.js\n     */\n\n    /**\n     * A Resize Manager. It is in charge of triggering `playerresize` on the player in the right conditions.\n     *\n     * It'll either create an iframe and use a debounced resize handler on it or use the new {@link https://wicg.github.io/ResizeObserver/|ResizeObserver}.\n     *\n     * If the ResizeObserver is available natively, it will be used. A polyfill can be passed in as an option.\n     * If a `playerresize` event is not needed, the ResizeManager component can be removed from the player, see the example below.\n     *\n     * @example <caption>How to disable the resize manager</caption>\n     * const player = videojs('#vid', {\n     *   resizeManager: false\n     * });\n     *\n     * @see {@link https://wicg.github.io/ResizeObserver/|ResizeObserver specification}\n     *\n     * @extends Component\n     */\n    class ResizeManager extends Component$1 {\n        /**\n         * Create the ResizeManager.\n         *\n         * @param {Object} player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of ResizeManager options.\n         *\n         * @param {Object} [options.ResizeObserver]\n         *        A polyfill for ResizeObserver can be passed in here.\n         *        If this is set to null it will ignore the native ResizeObserver and fall back to the iframe fallback.\n         */\n        constructor(player, options) {\n            let RESIZE_OBSERVER_AVAILABLE = options.ResizeObserver || window.ResizeObserver;\n\n            // if `null` was passed, we want to disable the ResizeObserver\n            if (options.ResizeObserver === null) {\n                RESIZE_OBSERVER_AVAILABLE = false;\n            }\n\n            // Only create an element when ResizeObserver isn't available\n            const options_ = merge$2({\n                createEl: !RESIZE_OBSERVER_AVAILABLE,\n                reportTouchActivity: false\n            }, options);\n            super(player, options_);\n            this.ResizeObserver = options.ResizeObserver || window.ResizeObserver;\n            this.loadListener_ = null;\n            this.resizeObserver_ = null;\n            this.debouncedHandler_ = debounce(() => {\n                this.resizeHandler();\n            }, 100, false, this);\n            if (RESIZE_OBSERVER_AVAILABLE) {\n                this.resizeObserver_ = new this.ResizeObserver(this.debouncedHandler_);\n                this.resizeObserver_.observe(player.el());\n            } else {\n                this.loadListener_ = () => {\n                    if (!this.el_ || !this.el_.contentWindow) {\n                        return;\n                    }\n                    const debouncedHandler_ = this.debouncedHandler_;\n                    let unloadListener_ = this.unloadListener_ = function () {\n                        off(this, 'resize', debouncedHandler_);\n                        off(this, 'unload', unloadListener_);\n                        unloadListener_ = null;\n                    };\n\n                    // safari and edge can unload the iframe before resizemanager dispose\n                    // we have to dispose of event handlers correctly before that happens\n                    on(this.el_.contentWindow, 'unload', unloadListener_);\n                    on(this.el_.contentWindow, 'resize', debouncedHandler_);\n                };\n                this.one('load', this.loadListener_);\n            }\n        }\n        createEl() {\n            return super.createEl('iframe', {\n                className: 'vjs-resize-manager',\n                tabIndex: -1,\n                title: this.localize('No content')\n            }, {\n                'aria-hidden': 'true'\n            });\n        }\n\n        /**\n         * Called when a resize is triggered on the iframe or a resize is observed via the ResizeObserver\n         *\n         * @fires Player#playerresize\n         */\n        resizeHandler() {\n            /**\n             * Called when the player size has changed\n             *\n             * @event Player#playerresize\n             * @type {Event}\n             */\n            // make sure player is still around to trigger\n            // prevents this from causing an error after dispose\n            if (!this.player_ || !this.player_.trigger) {\n                return;\n            }\n            this.player_.trigger('playerresize');\n        }\n        dispose() {\n            if (this.debouncedHandler_) {\n                this.debouncedHandler_.cancel();\n            }\n            if (this.resizeObserver_) {\n                if (this.player_.el()) {\n                    this.resizeObserver_.unobserve(this.player_.el());\n                }\n                this.resizeObserver_.disconnect();\n            }\n            if (this.loadListener_) {\n                this.off('load', this.loadListener_);\n            }\n            if (this.el_ && this.el_.contentWindow && this.unloadListener_) {\n                this.unloadListener_.call(this.el_.contentWindow);\n            }\n            this.ResizeObserver = null;\n            this.resizeObserver = null;\n            this.debouncedHandler_ = null;\n            this.loadListener_ = null;\n            super.dispose();\n        }\n    }\n    Component$1.registerComponent('ResizeManager', ResizeManager);\n\n    const defaults = {\n        trackingThreshold: 20,\n        liveTolerance: 15\n    };\n\n    /*\n    track when we are at the live edge, and other helpers for live playback */\n\n    /**\n     * A class for checking live current time and determining when the player\n     * is at or behind the live edge.\n     */\n    class LiveTracker extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {number} [options.trackingThreshold=20]\n         *        Number of seconds of live window (seekableEnd - seekableStart) that\n         *        media needs to have before the liveui will be shown.\n         *\n         * @param {number} [options.liveTolerance=15]\n         *        Number of seconds behind live that we have to be\n         *        before we will be considered non-live. Note that this will only\n         *        be used when playing at the live edge. This allows large seekable end\n         *        changes to not effect whether we are live or not.\n         */\n        constructor(player, options) {\n            // LiveTracker does not need an element\n            const options_ = merge$2(defaults, options, {\n                createEl: false\n            });\n            super(player, options_);\n            this.trackLiveHandler_ = () => this.trackLive_();\n            this.handlePlay_ = e => this.handlePlay(e);\n            this.handleFirstTimeupdate_ = e => this.handleFirstTimeupdate(e);\n            this.handleSeeked_ = e => this.handleSeeked(e);\n            this.seekToLiveEdge_ = e => this.seekToLiveEdge(e);\n            this.reset_();\n            this.on(this.player_, 'durationchange', e => this.handleDurationchange(e));\n            // we should try to toggle tracking on canplay as native playback engines, like Safari\n            // may not have the proper values for things like seekableEnd until then\n            this.on(this.player_, 'canplay', () => this.toggleTracking());\n        }\n\n        /**\n         * all the functionality for tracking when seek end changes\n         * and for tracking how far past seek end we should be\n         */\n        trackLive_() {\n            const seekable = this.player_.seekable();\n\n            // skip undefined seekable\n            if (!seekable || !seekable.length) {\n                return;\n            }\n            const newTime = Number(window.performance.now().toFixed(4));\n            const deltaTime = this.lastTime_ === -1 ? 0 : (newTime - this.lastTime_) / 1000;\n            this.lastTime_ = newTime;\n            this.pastSeekEnd_ = this.pastSeekEnd() + deltaTime;\n            const liveCurrentTime = this.liveCurrentTime();\n            const currentTime = this.player_.currentTime();\n\n            // we are behind live if any are true\n            // 1. the player is paused\n            // 2. the user seeked to a location 2 seconds away from live\n            // 3. the difference between live and current time is greater\n            //    liveTolerance which defaults to 15s\n            let isBehind = this.player_.paused() || this.seekedBehindLive_ || Math.abs(liveCurrentTime - currentTime) > this.options_.liveTolerance;\n\n            // we cannot be behind if\n            // 1. until we have not seen a timeupdate yet\n            // 2. liveCurrentTime is Infinity, which happens on Android and Native Safari\n            if (!this.timeupdateSeen_ || liveCurrentTime === Infinity) {\n                isBehind = false;\n            }\n            if (isBehind !== this.behindLiveEdge_) {\n                this.behindLiveEdge_ = isBehind;\n                this.trigger('liveedgechange');\n            }\n        }\n\n        /**\n         * handle a durationchange event on the player\n         * and start/stop tracking accordingly.\n         */\n        handleDurationchange() {\n            this.toggleTracking();\n        }\n\n        /**\n         * start/stop tracking\n         */\n        toggleTracking() {\n            if (this.player_.duration() === Infinity && this.liveWindow() >= this.options_.trackingThreshold) {\n                if (this.player_.options_.liveui) {\n                    this.player_.addClass('vjs-liveui');\n                }\n                this.startTracking();\n            } else {\n                this.player_.removeClass('vjs-liveui');\n                this.stopTracking();\n            }\n        }\n\n        /**\n         * start tracking live playback\n         */\n        startTracking() {\n            if (this.isTracking()) {\n                return;\n            }\n\n            // If we haven't seen a timeupdate, we need to check whether playback\n            // began before this component started tracking. This can happen commonly\n            // when using autoplay.\n            if (!this.timeupdateSeen_) {\n                this.timeupdateSeen_ = this.player_.hasStarted();\n            }\n            this.trackingInterval_ = this.setInterval(this.trackLiveHandler_, UPDATE_REFRESH_INTERVAL);\n            this.trackLive_();\n            this.on(this.player_, ['play', 'pause'], this.trackLiveHandler_);\n            if (!this.timeupdateSeen_) {\n                this.one(this.player_, 'play', this.handlePlay_);\n                this.one(this.player_, 'timeupdate', this.handleFirstTimeupdate_);\n            } else {\n                this.on(this.player_, 'seeked', this.handleSeeked_);\n            }\n        }\n\n        /**\n         * handle the first timeupdate on the player if it wasn't already playing\n         * when live tracker started tracking.\n         */\n        handleFirstTimeupdate() {\n            this.timeupdateSeen_ = true;\n            this.on(this.player_, 'seeked', this.handleSeeked_);\n        }\n\n        /**\n         * Keep track of what time a seek starts, and listen for seeked\n         * to find where a seek ends.\n         */\n        handleSeeked() {\n            const timeDiff = Math.abs(this.liveCurrentTime() - this.player_.currentTime());\n            this.seekedBehindLive_ = this.nextSeekedFromUser_ && timeDiff > 2;\n            this.nextSeekedFromUser_ = false;\n            this.trackLive_();\n        }\n\n        /**\n         * handle the first play on the player, and make sure that we seek\n         * right to the live edge.\n         */\n        handlePlay() {\n            this.one(this.player_, 'timeupdate', this.seekToLiveEdge_);\n        }\n\n        /**\n         * Stop tracking, and set all internal variables to\n         * their initial value.\n         */\n        reset_() {\n            this.lastTime_ = -1;\n            this.pastSeekEnd_ = 0;\n            this.lastSeekEnd_ = -1;\n            this.behindLiveEdge_ = true;\n            this.timeupdateSeen_ = false;\n            this.seekedBehindLive_ = false;\n            this.nextSeekedFromUser_ = false;\n            this.clearInterval(this.trackingInterval_);\n            this.trackingInterval_ = null;\n            this.off(this.player_, ['play', 'pause'], this.trackLiveHandler_);\n            this.off(this.player_, 'seeked', this.handleSeeked_);\n            this.off(this.player_, 'play', this.handlePlay_);\n            this.off(this.player_, 'timeupdate', this.handleFirstTimeupdate_);\n            this.off(this.player_, 'timeupdate', this.seekToLiveEdge_);\n        }\n\n        /**\n         * The next seeked event is from the user. Meaning that any seek\n         * > 2s behind live will be considered behind live for real and\n         * liveTolerance will be ignored.\n         */\n        nextSeekedFromUser() {\n            this.nextSeekedFromUser_ = true;\n        }\n\n        /**\n         * stop tracking live playback\n         */\n        stopTracking() {\n            if (!this.isTracking()) {\n                return;\n            }\n            this.reset_();\n            this.trigger('liveedgechange');\n        }\n\n        /**\n         * A helper to get the player seekable end\n         * so that we don't have to null check everywhere\n         *\n         * @return {number}\n         *         The furthest seekable end or Infinity.\n         */\n        seekableEnd() {\n            const seekable = this.player_.seekable();\n            const seekableEnds = [];\n            let i = seekable ? seekable.length : 0;\n            while (i--) {\n                seekableEnds.push(seekable.end(i));\n            }\n\n            // grab the furthest seekable end after sorting, or if there are none\n            // default to Infinity\n            return seekableEnds.length ? seekableEnds.sort()[seekableEnds.length - 1] : Infinity;\n        }\n\n        /**\n         * A helper to get the player seekable start\n         * so that we don't have to null check everywhere\n         *\n         * @return {number}\n         *         The earliest seekable start or 0.\n         */\n        seekableStart() {\n            const seekable = this.player_.seekable();\n            const seekableStarts = [];\n            let i = seekable ? seekable.length : 0;\n            while (i--) {\n                seekableStarts.push(seekable.start(i));\n            }\n\n            // grab the first seekable start after sorting, or if there are none\n            // default to 0\n            return seekableStarts.length ? seekableStarts.sort()[0] : 0;\n        }\n\n        /**\n         * Get the live time window aka\n         * the amount of time between seekable start and\n         * live current time.\n         *\n         * @return {number}\n         *         The amount of seconds that are seekable in\n         *         the live video.\n         */\n        liveWindow() {\n            const liveCurrentTime = this.liveCurrentTime();\n\n            // if liveCurrenTime is Infinity then we don't have a liveWindow at all\n            if (liveCurrentTime === Infinity) {\n                return 0;\n            }\n            return liveCurrentTime - this.seekableStart();\n        }\n\n        /**\n         * Determines if the player is live, only checks if this component\n         * is tracking live playback or not\n         *\n         * @return {boolean}\n         *         Whether liveTracker is tracking\n         */\n        isLive() {\n            return this.isTracking();\n        }\n\n        /**\n         * Determines if currentTime is at the live edge and won't fall behind\n         * on each seekableendchange\n         *\n         * @return {boolean}\n         *         Whether playback is at the live edge\n         */\n        atLiveEdge() {\n            return !this.behindLiveEdge();\n        }\n\n        /**\n         * get what we expect the live current time to be\n         *\n         * @return {number}\n         *         The expected live current time\n         */\n        liveCurrentTime() {\n            return this.pastSeekEnd() + this.seekableEnd();\n        }\n\n        /**\n         * The number of seconds that have occurred after seekable end\n         * changed. This will be reset to 0 once seekable end changes.\n         *\n         * @return {number}\n         *         Seconds past the current seekable end\n         */\n        pastSeekEnd() {\n            const seekableEnd = this.seekableEnd();\n            if (this.lastSeekEnd_ !== -1 && seekableEnd !== this.lastSeekEnd_) {\n                this.pastSeekEnd_ = 0;\n            }\n            this.lastSeekEnd_ = seekableEnd;\n            return this.pastSeekEnd_;\n        }\n\n        /**\n         * If we are currently behind the live edge, aka currentTime will be\n         * behind on a seekableendchange\n         *\n         * @return {boolean}\n         *         If we are behind the live edge\n         */\n        behindLiveEdge() {\n            return this.behindLiveEdge_;\n        }\n\n        /**\n         * Whether live tracker is currently tracking or not.\n         */\n        isTracking() {\n            return typeof this.trackingInterval_ === 'number';\n        }\n\n        /**\n         * Seek to the live edge if we are behind the live edge\n         */\n        seekToLiveEdge() {\n            this.seekedBehindLive_ = false;\n            if (this.atLiveEdge()) {\n                return;\n            }\n            this.nextSeekedFromUser_ = false;\n            this.player_.currentTime(this.liveCurrentTime());\n        }\n\n        /**\n         * Dispose of liveTracker\n         */\n        dispose() {\n            this.stopTracking();\n            super.dispose();\n        }\n    }\n    Component$1.registerComponent('LiveTracker', LiveTracker);\n\n    /**\n     * Displays an element over the player which contains an optional title and\n     * description for the current content.\n     *\n     * Much of the code for this component originated in the now obsolete\n     * videojs-dock plugin: https://github.com/brightcove/videojs-dock/\n     *\n     * @extends Component\n     */\n    class TitleBar extends Component$1 {\n        constructor(player, options) {\n            super(player, options);\n            this.on('statechanged', e => this.updateDom_());\n            this.updateDom_();\n        }\n\n        /**\n         * Create the `TitleBar`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            this.els = {\n                title: createEl('div', {\n                    className: 'vjs-title-bar-title',\n                    id: `vjs-title-bar-title-${newGUID()}`\n                }),\n                description: createEl('div', {\n                    className: 'vjs-title-bar-description',\n                    id: `vjs-title-bar-description-${newGUID()}`\n                })\n            };\n            return createEl('div', {\n                className: 'vjs-title-bar'\n            }, {}, Object.values(this.els));\n        }\n\n        /**\n         * Updates the DOM based on the component's state object.\n         */\n        updateDom_() {\n            const tech = this.player_.tech_;\n            const techEl = tech && tech.el_;\n            const techAriaAttrs = {\n                title: 'aria-labelledby',\n                description: 'aria-describedby'\n            };\n            ['title', 'description'].forEach(k => {\n                const value = this.state[k];\n                const el = this.els[k];\n                const techAriaAttr = techAriaAttrs[k];\n                emptyEl(el);\n                if (value) {\n                    textContent(el, value);\n                }\n\n                // If there is a tech element available, update its ARIA attributes\n                // according to whether a title and/or description have been provided.\n                if (techEl) {\n                    techEl.removeAttribute(techAriaAttr);\n                    if (value) {\n                        techEl.setAttribute(techAriaAttr, el.id);\n                    }\n                }\n            });\n            if (this.state.title || this.state.description) {\n                this.show();\n            } else {\n                this.hide();\n            }\n        }\n\n        /**\n         * Update the contents of the title bar component with new title and\n         * description text.\n         *\n         * If both title and description are missing, the title bar will be hidden.\n         *\n         * If either title or description are present, the title bar will be visible.\n         *\n         * NOTE: Any previously set value will be preserved. To unset a previously\n         * set value, you must pass an empty string or null.\n         *\n         * For example:\n         *\n         * ```\n         * update({title: 'foo', description: 'bar'}) // title: 'foo', description: 'bar'\n         * update({description: 'bar2'}) // title: 'foo', description: 'bar2'\n         * update({title: ''}) // title: '', description: 'bar2'\n         * update({title: 'foo', description: null}) // title: 'foo', description: null\n         * ```\n         *\n         * @param  {Object} [options={}]\n         *         An options object. When empty, the title bar will be hidden.\n         *\n         * @param  {string} [options.title]\n         *         A title to display in the title bar.\n         *\n         * @param  {string} [options.description]\n         *         A description to display in the title bar.\n         */\n        update(options) {\n            this.setState(options);\n        }\n\n        /**\n         * Dispose the component.\n         */\n        dispose() {\n            const tech = this.player_.tech_;\n            const techEl = tech && tech.el_;\n            if (techEl) {\n                techEl.removeAttribute('aria-labelledby');\n                techEl.removeAttribute('aria-describedby');\n            }\n            super.dispose();\n            this.els = null;\n        }\n    }\n    Component$1.registerComponent('TitleBar', TitleBar);\n\n    /**\n     * This function is used to fire a sourceset when there is something\n     * similar to `mediaEl.load()` being called. It will try to find the source via\n     * the `src` attribute and then the `<source>` elements. It will then fire `sourceset`\n     * with the source that was found or empty string if we cannot know. If it cannot\n     * find a source then `sourceset` will not be fired.\n     *\n     * @param { import('./html5').default } tech\n     *        The tech object that sourceset was setup on\n     *\n     * @return {boolean}\n     *         returns false if the sourceset was not fired and true otherwise.\n     */\n    const sourcesetLoad = tech => {\n        const el = tech.el();\n\n        // if `el.src` is set, that source will be loaded.\n        if (el.hasAttribute('src')) {\n            tech.triggerSourceset(el.src);\n            return true;\n        }\n\n        /**\n         * Since there isn't a src property on the media element, source elements will be used for\n         * implementing the source selection algorithm. This happens asynchronously and\n         * for most cases were there is more than one source we cannot tell what source will\n         * be loaded, without re-implementing the source selection algorithm. At this time we are not\n         * going to do that. There are three special cases that we do handle here though:\n         *\n         * 1. If there are no sources, do not fire `sourceset`.\n         * 2. If there is only one `<source>` with a `src` property/attribute that is our `src`\n         * 3. If there is more than one `<source>` but all of them have the same `src` url.\n         *    That will be our src.\n         */\n        const sources = tech.$$('source');\n        const srcUrls = [];\n        let src = '';\n\n        // if there are no sources, do not fire sourceset\n        if (!sources.length) {\n            return false;\n        }\n\n        // only count valid/non-duplicate source elements\n        for (let i = 0; i < sources.length; i++) {\n            const url = sources[i].src;\n            if (url && srcUrls.indexOf(url) === -1) {\n                srcUrls.push(url);\n            }\n        }\n\n        // there were no valid sources\n        if (!srcUrls.length) {\n            return false;\n        }\n\n        // there is only one valid source element url\n        // use that\n        if (srcUrls.length === 1) {\n            src = srcUrls[0];\n        }\n        tech.triggerSourceset(src);\n        return true;\n    };\n\n    /**\n     * our implementation of an `innerHTML` descriptor for browsers\n     * that do not have one.\n     */\n    const innerHTMLDescriptorPolyfill = Object.defineProperty({}, 'innerHTML', {\n        get() {\n            return this.cloneNode(true).innerHTML;\n        },\n        set(v) {\n            // make a dummy node to use innerHTML on\n            const dummy = document.createElement(this.nodeName.toLowerCase());\n\n            // set innerHTML to the value provided\n            dummy.innerHTML = v;\n\n            // make a document fragment to hold the nodes from dummy\n            const docFrag = document.createDocumentFragment();\n\n            // copy all of the nodes created by the innerHTML on dummy\n            // to the document fragment\n            while (dummy.childNodes.length) {\n                docFrag.appendChild(dummy.childNodes[0]);\n            }\n\n            // remove content\n            this.innerText = '';\n\n            // now we add all of that html in one by appending the\n            // document fragment. This is how innerHTML does it.\n            window.Element.prototype.appendChild.call(this, docFrag);\n\n            // then return the result that innerHTML's setter would\n            return this.innerHTML;\n        }\n    });\n\n    /**\n     * Get a property descriptor given a list of priorities and the\n     * property to get.\n     */\n    const getDescriptor = (priority, prop) => {\n        let descriptor = {};\n        for (let i = 0; i < priority.length; i++) {\n            descriptor = Object.getOwnPropertyDescriptor(priority[i], prop);\n            if (descriptor && descriptor.set && descriptor.get) {\n                break;\n            }\n        }\n        descriptor.enumerable = true;\n        descriptor.configurable = true;\n        return descriptor;\n    };\n    const getInnerHTMLDescriptor = tech => getDescriptor([tech.el(), window.HTMLMediaElement.prototype, window.Element.prototype, innerHTMLDescriptorPolyfill], 'innerHTML');\n\n    /**\n     * Patches browser internal functions so that we can tell synchronously\n     * if a `<source>` was appended to the media element. For some reason this\n     * causes a `sourceset` if the the media element is ready and has no source.\n     * This happens when:\n     * - The page has just loaded and the media element does not have a source.\n     * - The media element was emptied of all sources, then `load()` was called.\n     *\n     * It does this by patching the following functions/properties when they are supported:\n     *\n     * - `append()` - can be used to add a `<source>` element to the media element\n     * - `appendChild()` - can be used to add a `<source>` element to the media element\n     * - `insertAdjacentHTML()` -  can be used to add a `<source>` element to the media element\n     * - `innerHTML` -  can be used to add a `<source>` element to the media element\n     *\n     * @param {Html5} tech\n     *        The tech object that sourceset is being setup on.\n     */\n    const firstSourceWatch = function (tech) {\n        const el = tech.el();\n\n        // make sure firstSourceWatch isn't setup twice.\n        if (el.resetSourceWatch_) {\n            return;\n        }\n        const old = {};\n        const innerDescriptor = getInnerHTMLDescriptor(tech);\n        const appendWrapper = appendFn => (...args) => {\n            const retval = appendFn.apply(el, args);\n            sourcesetLoad(tech);\n            return retval;\n        };\n        ['append', 'appendChild', 'insertAdjacentHTML'].forEach(k => {\n            if (!el[k]) {\n                return;\n            }\n\n            // store the old function\n            old[k] = el[k];\n\n            // call the old function with a sourceset if a source\n            // was loaded\n            el[k] = appendWrapper(old[k]);\n        });\n        Object.defineProperty(el, 'innerHTML', merge$2(innerDescriptor, {\n            set: appendWrapper(innerDescriptor.set)\n        }));\n        el.resetSourceWatch_ = () => {\n            el.resetSourceWatch_ = null;\n            Object.keys(old).forEach(k => {\n                el[k] = old[k];\n            });\n            Object.defineProperty(el, 'innerHTML', innerDescriptor);\n        };\n\n        // on the first sourceset, we need to revert our changes\n        tech.one('sourceset', el.resetSourceWatch_);\n    };\n\n    /**\n     * our implementation of a `src` descriptor for browsers\n     * that do not have one\n     */\n    const srcDescriptorPolyfill = Object.defineProperty({}, 'src', {\n        get() {\n            if (this.hasAttribute('src')) {\n                return getAbsoluteURL(window.Element.prototype.getAttribute.call(this, 'src'));\n            }\n            return '';\n        },\n        set(v) {\n            window.Element.prototype.setAttribute.call(this, 'src', v);\n            return v;\n        }\n    });\n    const getSrcDescriptor = tech => getDescriptor([tech.el(), window.HTMLMediaElement.prototype, srcDescriptorPolyfill], 'src');\n\n    /**\n     * setup `sourceset` handling on the `Html5` tech. This function\n     * patches the following element properties/functions:\n     *\n     * - `src` - to determine when `src` is set\n     * - `setAttribute()` - to determine when `src` is set\n     * - `load()` - this re-triggers the source selection algorithm, and can\n     *              cause a sourceset.\n     *\n     * If there is no source when we are adding `sourceset` support or during a `load()`\n     * we also patch the functions listed in `firstSourceWatch`.\n     *\n     * @param {Html5} tech\n     *        The tech to patch\n     */\n    const setupSourceset = function (tech) {\n        if (!tech.featuresSourceset) {\n            return;\n        }\n        const el = tech.el();\n\n        // make sure sourceset isn't setup twice.\n        if (el.resetSourceset_) {\n            return;\n        }\n        const srcDescriptor = getSrcDescriptor(tech);\n        const oldSetAttribute = el.setAttribute;\n        const oldLoad = el.load;\n        Object.defineProperty(el, 'src', merge$2(srcDescriptor, {\n            set: v => {\n                const retval = srcDescriptor.set.call(el, v);\n\n                // we use the getter here to get the actual value set on src\n                tech.triggerSourceset(el.src);\n                return retval;\n            }\n        }));\n        el.setAttribute = (n, v) => {\n            const retval = oldSetAttribute.call(el, n, v);\n            if (/src/i.test(n)) {\n                tech.triggerSourceset(el.src);\n            }\n            return retval;\n        };\n        el.load = () => {\n            const retval = oldLoad.call(el);\n\n            // if load was called, but there was no source to fire\n            // sourceset on. We have to watch for a source append\n            // as that can trigger a `sourceset` when the media element\n            // has no source\n            if (!sourcesetLoad(tech)) {\n                tech.triggerSourceset('');\n                firstSourceWatch(tech);\n            }\n            return retval;\n        };\n        if (el.currentSrc) {\n            tech.triggerSourceset(el.currentSrc);\n        } else if (!sourcesetLoad(tech)) {\n            firstSourceWatch(tech);\n        }\n        el.resetSourceset_ = () => {\n            el.resetSourceset_ = null;\n            el.load = oldLoad;\n            el.setAttribute = oldSetAttribute;\n            Object.defineProperty(el, 'src', srcDescriptor);\n            if (el.resetSourceWatch_) {\n                el.resetSourceWatch_();\n            }\n        };\n    };\n\n    /**\n     * @file html5.js\n     */\n\n    /**\n     * HTML5 Media Controller - Wrapper for HTML5 Media API\n     *\n     * @mixes Tech~SourceHandlerAdditions\n     * @extends Tech\n     */\n    class Html5 extends Tech {\n        /**\n         * Create an instance of this Tech.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {Function} [ready]\n         *        Callback function to call when the `HTML5` Tech is ready.\n         */\n        constructor(options, ready) {\n            super(options, ready);\n            const source = options.source;\n            let crossoriginTracks = false;\n            this.featuresVideoFrameCallback = this.featuresVideoFrameCallback && this.el_.tagName === 'VIDEO';\n\n            // Set the source if one is provided\n            // 1) Check if the source is new (if not, we want to keep the original so playback isn't interrupted)\n            // 2) Check to see if the network state of the tag was failed at init, and if so, reset the source\n            // anyway so the error gets fired.\n            if (source && (this.el_.currentSrc !== source.src || options.tag && options.tag.initNetworkState_ === 3)) {\n                this.setSource(source);\n            } else {\n                this.handleLateInit_(this.el_);\n            }\n\n            // setup sourceset after late sourceset/init\n            if (options.enableSourceset) {\n                this.setupSourcesetHandling_();\n            }\n            this.isScrubbing_ = false;\n            if (this.el_.hasChildNodes()) {\n                const nodes = this.el_.childNodes;\n                let nodesLength = nodes.length;\n                const removeNodes = [];\n                while (nodesLength--) {\n                    const node = nodes[nodesLength];\n                    const nodeName = node.nodeName.toLowerCase();\n                    if (nodeName === 'track') {\n                        if (!this.featuresNativeTextTracks) {\n                            // Empty video tag tracks so the built-in player doesn't use them also.\n                            // This may not be fast enough to stop HTML5 browsers from reading the tags\n                            // so we'll need to turn off any default tracks if we're manually doing\n                            // captions and subtitles. videoElement.textTracks\n                            removeNodes.push(node);\n                        } else {\n                            // store HTMLTrackElement and TextTrack to remote list\n                            this.remoteTextTrackEls().addTrackElement_(node);\n                            this.remoteTextTracks().addTrack(node.track);\n                            this.textTracks().addTrack(node.track);\n                            if (!crossoriginTracks && !this.el_.hasAttribute('crossorigin') && isCrossOrigin(node.src)) {\n                                crossoriginTracks = true;\n                            }\n                        }\n                    }\n                }\n                for (let i = 0; i < removeNodes.length; i++) {\n                    this.el_.removeChild(removeNodes[i]);\n                }\n            }\n            this.proxyNativeTracks_();\n            if (this.featuresNativeTextTracks && crossoriginTracks) {\n                log$1.warn('Text Tracks are being loaded from another origin but the crossorigin attribute isn\\'t used.\\n' + 'This may prevent text tracks from loading.');\n            }\n\n            // prevent iOS Safari from disabling metadata text tracks during native playback\n            this.restoreMetadataTracksInIOSNativePlayer_();\n\n            // Determine if native controls should be used\n            // Our goal should be to get the custom controls on mobile solid everywhere\n            // so we can remove this all together. Right now this will block custom\n            // controls on touch enabled laptops like the Chrome Pixel\n            if ((TOUCH_ENABLED || IS_IPHONE) && options.nativeControlsForTouch === true) {\n                this.setControls(true);\n            }\n\n            // on iOS, we want to proxy `webkitbeginfullscreen` and `webkitendfullscreen`\n            // into a `fullscreenchange` event\n            this.proxyWebkitFullscreen_();\n            this.triggerReady();\n        }\n\n        /**\n         * Dispose of `HTML5` media element and remove all tracks.\n         */\n        dispose() {\n            if (this.el_ && this.el_.resetSourceset_) {\n                this.el_.resetSourceset_();\n            }\n            Html5.disposeMediaElement(this.el_);\n            this.options_ = null;\n\n            // tech will handle clearing of the emulated track list\n            super.dispose();\n        }\n\n        /**\n         * Modify the media element so that we can detect when\n         * the source is changed. Fires `sourceset` just after the source has changed\n         */\n        setupSourcesetHandling_() {\n            setupSourceset(this);\n        }\n\n        /**\n         * When a captions track is enabled in the iOS Safari native player, all other\n         * tracks are disabled (including metadata tracks), which nulls all of their\n         * associated cue points. This will restore metadata tracks to their pre-fullscreen\n         * state in those cases so that cue points are not needlessly lost.\n         *\n         * @private\n         */\n        restoreMetadataTracksInIOSNativePlayer_() {\n            const textTracks = this.textTracks();\n            let metadataTracksPreFullscreenState;\n\n            // captures a snapshot of every metadata track's current state\n            const takeMetadataTrackSnapshot = () => {\n                metadataTracksPreFullscreenState = [];\n                for (let i = 0; i < textTracks.length; i++) {\n                    const track = textTracks[i];\n                    if (track.kind === 'metadata') {\n                        metadataTracksPreFullscreenState.push({\n                            track,\n                            storedMode: track.mode\n                        });\n                    }\n                }\n            };\n\n            // snapshot each metadata track's initial state, and update the snapshot\n            // each time there is a track 'change' event\n            takeMetadataTrackSnapshot();\n            textTracks.addEventListener('change', takeMetadataTrackSnapshot);\n            this.on('dispose', () => textTracks.removeEventListener('change', takeMetadataTrackSnapshot));\n            const restoreTrackMode = () => {\n                for (let i = 0; i < metadataTracksPreFullscreenState.length; i++) {\n                    const storedTrack = metadataTracksPreFullscreenState[i];\n                    if (storedTrack.track.mode === 'disabled' && storedTrack.track.mode !== storedTrack.storedMode) {\n                        storedTrack.track.mode = storedTrack.storedMode;\n                    }\n                }\n                // we only want this handler to be executed on the first 'change' event\n                textTracks.removeEventListener('change', restoreTrackMode);\n            };\n\n            // when we enter fullscreen playback, stop updating the snapshot and\n            // restore all track modes to their pre-fullscreen state\n            this.on('webkitbeginfullscreen', () => {\n                textTracks.removeEventListener('change', takeMetadataTrackSnapshot);\n\n                // remove the listener before adding it just in case it wasn't previously removed\n                textTracks.removeEventListener('change', restoreTrackMode);\n                textTracks.addEventListener('change', restoreTrackMode);\n            });\n\n            // start updating the snapshot again after leaving fullscreen\n            this.on('webkitendfullscreen', () => {\n                // remove the listener before adding it just in case it wasn't previously removed\n                textTracks.removeEventListener('change', takeMetadataTrackSnapshot);\n                textTracks.addEventListener('change', takeMetadataTrackSnapshot);\n\n                // remove the restoreTrackMode handler in case it wasn't triggered during fullscreen playback\n                textTracks.removeEventListener('change', restoreTrackMode);\n            });\n        }\n\n        /**\n         * Attempt to force override of tracks for the given type\n         *\n         * @param {string} type - Track type to override, possible values include 'Audio',\n         * 'Video', and 'Text'.\n         * @param {boolean} override - If set to true native audio/video will be overridden,\n         * otherwise native audio/video will potentially be used.\n         * @private\n         */\n        overrideNative_(type, override) {\n            // If there is no behavioral change don't add/remove listeners\n            if (override !== this[`featuresNative${type}Tracks`]) {\n                return;\n            }\n            const lowerCaseType = type.toLowerCase();\n            if (this[`${lowerCaseType}TracksListeners_`]) {\n                Object.keys(this[`${lowerCaseType}TracksListeners_`]).forEach(eventName => {\n                    const elTracks = this.el()[`${lowerCaseType}Tracks`];\n                    elTracks.removeEventListener(eventName, this[`${lowerCaseType}TracksListeners_`][eventName]);\n                });\n            }\n            this[`featuresNative${type}Tracks`] = !override;\n            this[`${lowerCaseType}TracksListeners_`] = null;\n            this.proxyNativeTracksForType_(lowerCaseType);\n        }\n\n        /**\n         * Attempt to force override of native audio tracks.\n         *\n         * @param {boolean} override - If set to true native audio will be overridden,\n         * otherwise native audio will potentially be used.\n         */\n        overrideNativeAudioTracks(override) {\n            this.overrideNative_('Audio', override);\n        }\n\n        /**\n         * Attempt to force override of native video tracks.\n         *\n         * @param {boolean} override - If set to true native video will be overridden,\n         * otherwise native video will potentially be used.\n         */\n        overrideNativeVideoTracks(override) {\n            this.overrideNative_('Video', override);\n        }\n\n        /**\n         * Proxy native track list events for the given type to our track\n         * lists if the browser we are playing in supports that type of track list.\n         *\n         * @param {string} name - Track type; values include 'audio', 'video', and 'text'\n         * @private\n         */\n        proxyNativeTracksForType_(name) {\n            const props = NORMAL[name];\n            const elTracks = this.el()[props.getterName];\n            const techTracks = this[props.getterName]();\n            if (!this[`featuresNative${props.capitalName}Tracks`] || !elTracks || !elTracks.addEventListener) {\n                return;\n            }\n            const listeners = {\n                change: e => {\n                    const event = {\n                        type: 'change',\n                        target: techTracks,\n                        currentTarget: techTracks,\n                        srcElement: techTracks\n                    };\n                    techTracks.trigger(event);\n\n                    // if we are a text track change event, we should also notify the\n                    // remote text track list. This can potentially cause a false positive\n                    // if we were to get a change event on a non-remote track and\n                    // we triggered the event on the remote text track list which doesn't\n                    // contain that track. However, best practices mean looping through the\n                    // list of tracks and searching for the appropriate mode value, so,\n                    // this shouldn't pose an issue\n                    if (name === 'text') {\n                        this[REMOTE.remoteText.getterName]().trigger(event);\n                    }\n                },\n                addtrack(e) {\n                    techTracks.addTrack(e.track);\n                },\n                removetrack(e) {\n                    techTracks.removeTrack(e.track);\n                }\n            };\n            const removeOldTracks = function () {\n                const removeTracks = [];\n                for (let i = 0; i < techTracks.length; i++) {\n                    let found = false;\n                    for (let j = 0; j < elTracks.length; j++) {\n                        if (elTracks[j] === techTracks[i]) {\n                            found = true;\n                            break;\n                        }\n                    }\n                    if (!found) {\n                        removeTracks.push(techTracks[i]);\n                    }\n                }\n                while (removeTracks.length) {\n                    techTracks.removeTrack(removeTracks.shift());\n                }\n            };\n            this[props.getterName + 'Listeners_'] = listeners;\n            Object.keys(listeners).forEach(eventName => {\n                const listener = listeners[eventName];\n                elTracks.addEventListener(eventName, listener);\n                this.on('dispose', e => elTracks.removeEventListener(eventName, listener));\n            });\n\n            // Remove (native) tracks that are not used anymore\n            this.on('loadstart', removeOldTracks);\n            this.on('dispose', e => this.off('loadstart', removeOldTracks));\n        }\n\n        /**\n         * Proxy all native track list events to our track lists if the browser we are playing\n         * in supports that type of track list.\n         *\n         * @private\n         */\n        proxyNativeTracks_() {\n            NORMAL.names.forEach(name => {\n                this.proxyNativeTracksForType_(name);\n            });\n        }\n\n        /**\n         * Create the `Html5` Tech's DOM element.\n         *\n         * @return {Element}\n         *         The element that gets created.\n         */\n        createEl() {\n            let el = this.options_.tag;\n\n            // Check if this browser supports moving the element into the box.\n            // On the iPhone video will break if you move the element,\n            // So we have to create a brand new element.\n            // If we ingested the player div, we do not need to move the media element.\n            if (!el || !(this.options_.playerElIngest || this.movingMediaElementInDOM)) {\n                // If the original tag is still there, clone and remove it.\n                if (el) {\n                    const clone = el.cloneNode(true);\n                    if (el.parentNode) {\n                        el.parentNode.insertBefore(clone, el);\n                    }\n                    Html5.disposeMediaElement(el);\n                    el = clone;\n                } else {\n                    el = document.createElement('video');\n\n                    // determine if native controls should be used\n                    const tagAttributes = this.options_.tag && getAttributes(this.options_.tag);\n                    const attributes = merge$2({}, tagAttributes);\n                    if (!TOUCH_ENABLED || this.options_.nativeControlsForTouch !== true) {\n                        delete attributes.controls;\n                    }\n                    setAttributes(el, Object.assign(attributes, {\n                        id: this.options_.techId,\n                        class: 'vjs-tech'\n                    }));\n                }\n                el.playerId = this.options_.playerId;\n            }\n            if (typeof this.options_.preload !== 'undefined') {\n                setAttribute(el, 'preload', this.options_.preload);\n            }\n            if (this.options_.disablePictureInPicture !== undefined) {\n                el.disablePictureInPicture = this.options_.disablePictureInPicture;\n            }\n\n            // Update specific tag settings, in case they were overridden\n            // `autoplay` has to be *last* so that `muted` and `playsinline` are present\n            // when iOS/Safari or other browsers attempt to autoplay.\n            const settingsAttrs = ['loop', 'muted', 'playsinline', 'autoplay'];\n            for (let i = 0; i < settingsAttrs.length; i++) {\n                const attr = settingsAttrs[i];\n                const value = this.options_[attr];\n                if (typeof value !== 'undefined') {\n                    if (value) {\n                        setAttribute(el, attr, attr);\n                    } else {\n                        removeAttribute(el, attr);\n                    }\n                    el[attr] = value;\n                }\n            }\n            return el;\n        }\n\n        /**\n         * This will be triggered if the loadstart event has already fired, before videojs was\n         * ready. Two known examples of when this can happen are:\n         * 1. If we're loading the playback object after it has started loading\n         * 2. The media is already playing the (often with autoplay on) then\n         *\n         * This function will fire another loadstart so that videojs can catchup.\n         *\n         * @fires Tech#loadstart\n         *\n         * @return {undefined}\n         *         returns nothing.\n         */\n        handleLateInit_(el) {\n            if (el.networkState === 0 || el.networkState === 3) {\n                // The video element hasn't started loading the source yet\n                // or didn't find a source\n                return;\n            }\n            if (el.readyState === 0) {\n                // NetworkState is set synchronously BUT loadstart is fired at the\n                // end of the current stack, usually before setInterval(fn, 0).\n                // So at this point we know loadstart may have already fired or is\n                // about to fire, and either way the player hasn't seen it yet.\n                // We don't want to fire loadstart prematurely here and cause a\n                // double loadstart so we'll wait and see if it happens between now\n                // and the next loop, and fire it if not.\n                // HOWEVER, we also want to make sure it fires before loadedmetadata\n                // which could also happen between now and the next loop, so we'll\n                // watch for that also.\n                let loadstartFired = false;\n                const setLoadstartFired = function () {\n                    loadstartFired = true;\n                };\n                this.on('loadstart', setLoadstartFired);\n                const triggerLoadstart = function () {\n                    // We did miss the original loadstart. Make sure the player\n                    // sees loadstart before loadedmetadata\n                    if (!loadstartFired) {\n                        this.trigger('loadstart');\n                    }\n                };\n                this.on('loadedmetadata', triggerLoadstart);\n                this.ready(function () {\n                    this.off('loadstart', setLoadstartFired);\n                    this.off('loadedmetadata', triggerLoadstart);\n                    if (!loadstartFired) {\n                        // We did miss the original native loadstart. Fire it now.\n                        this.trigger('loadstart');\n                    }\n                });\n                return;\n            }\n\n            // From here on we know that loadstart already fired and we missed it.\n            // The other readyState events aren't as much of a problem if we double\n            // them, so not going to go to as much trouble as loadstart to prevent\n            // that unless we find reason to.\n            const eventsToTrigger = ['loadstart'];\n\n            // loadedmetadata: newly equal to HAVE_METADATA (1) or greater\n            eventsToTrigger.push('loadedmetadata');\n\n            // loadeddata: newly increased to HAVE_CURRENT_DATA (2) or greater\n            if (el.readyState >= 2) {\n                eventsToTrigger.push('loadeddata');\n            }\n\n            // canplay: newly increased to HAVE_FUTURE_DATA (3) or greater\n            if (el.readyState >= 3) {\n                eventsToTrigger.push('canplay');\n            }\n\n            // canplaythrough: newly equal to HAVE_ENOUGH_DATA (4)\n            if (el.readyState >= 4) {\n                eventsToTrigger.push('canplaythrough');\n            }\n\n            // We still need to give the player time to add event listeners\n            this.ready(function () {\n                eventsToTrigger.forEach(function (type) {\n                    this.trigger(type);\n                }, this);\n            });\n        }\n\n        /**\n         * Set whether we are scrubbing or not.\n         * This is used to decide whether we should use `fastSeek` or not.\n         * `fastSeek` is used to provide trick play on Safari browsers.\n         *\n         * @param {boolean} isScrubbing\n         *                  - true for we are currently scrubbing\n         *                  - false for we are no longer scrubbing\n         */\n        setScrubbing(isScrubbing) {\n            this.isScrubbing_ = isScrubbing;\n        }\n\n        /**\n         * Get whether we are scrubbing or not.\n         *\n         * @return {boolean} isScrubbing\n         *                  - true for we are currently scrubbing\n         *                  - false for we are no longer scrubbing\n         */\n        scrubbing() {\n            return this.isScrubbing_;\n        }\n\n        /**\n         * Set current time for the `HTML5` tech.\n         *\n         * @param {number} seconds\n         *        Set the current time of the media to this.\n         */\n        setCurrentTime(seconds) {\n            try {\n                if (this.isScrubbing_ && this.el_.fastSeek && IS_ANY_SAFARI) {\n                    this.el_.fastSeek(seconds);\n                } else {\n                    this.el_.currentTime = seconds;\n                }\n            } catch (e) {\n                log$1(e, 'Video is not ready. (Video.js)');\n                // this.warning(VideoJS.warnings.videoNotReady);\n            }\n        }\n\n        /**\n         * Get the current duration of the HTML5 media element.\n         *\n         * @return {number}\n         *         The duration of the media or 0 if there is no duration.\n         */\n        duration() {\n            // Android Chrome will report duration as Infinity for VOD HLS until after\n            // playback has started, which triggers the live display erroneously.\n            // Return NaN if playback has not started and trigger a durationupdate once\n            // the duration can be reliably known.\n            if (this.el_.duration === Infinity && IS_ANDROID && IS_CHROME && this.el_.currentTime === 0) {\n                // Wait for the first `timeupdate` with currentTime > 0 - there may be\n                // several with 0\n                const checkProgress = () => {\n                    if (this.el_.currentTime > 0) {\n                        // Trigger durationchange for genuinely live video\n                        if (this.el_.duration === Infinity) {\n                            this.trigger('durationchange');\n                        }\n                        this.off('timeupdate', checkProgress);\n                    }\n                };\n                this.on('timeupdate', checkProgress);\n                return NaN;\n            }\n            return this.el_.duration || NaN;\n        }\n\n        /**\n         * Get the current width of the HTML5 media element.\n         *\n         * @return {number}\n         *         The width of the HTML5 media element.\n         */\n        width() {\n            return this.el_.offsetWidth;\n        }\n\n        /**\n         * Get the current height of the HTML5 media element.\n         *\n         * @return {number}\n         *         The height of the HTML5 media element.\n         */\n        height() {\n            return this.el_.offsetHeight;\n        }\n\n        /**\n         * Proxy iOS `webkitbeginfullscreen` and `webkitendfullscreen` into\n         * `fullscreenchange` event.\n         *\n         * @private\n         * @fires fullscreenchange\n         * @listens webkitendfullscreen\n         * @listens webkitbeginfullscreen\n         * @listens webkitbeginfullscreen\n         */\n        proxyWebkitFullscreen_() {\n            if (!('webkitDisplayingFullscreen' in this.el_)) {\n                return;\n            }\n            const endFn = function () {\n                this.trigger('fullscreenchange', {\n                    isFullscreen: false\n                });\n                // Safari will sometimes set controls on the videoelement when existing fullscreen.\n                if (this.el_.controls && !this.options_.nativeControlsForTouch && this.controls()) {\n                    this.el_.controls = false;\n                }\n            };\n            const beginFn = function () {\n                if ('webkitPresentationMode' in this.el_ && this.el_.webkitPresentationMode !== 'picture-in-picture') {\n                    this.one('webkitendfullscreen', endFn);\n                    this.trigger('fullscreenchange', {\n                        isFullscreen: true,\n                        // set a flag in case another tech triggers fullscreenchange\n                        nativeIOSFullscreen: true\n                    });\n                }\n            };\n            this.on('webkitbeginfullscreen', beginFn);\n            this.on('dispose', () => {\n                this.off('webkitbeginfullscreen', beginFn);\n                this.off('webkitendfullscreen', endFn);\n            });\n        }\n\n        /**\n         * Check if fullscreen is supported on the video el.\n         *\n         * @return {boolean}\n         *         - True if fullscreen is supported.\n         *         - False if fullscreen is not supported.\n         */\n        supportsFullScreen() {\n            return typeof this.el_.webkitEnterFullScreen === 'function';\n        }\n\n        /**\n         * Request that the `HTML5` Tech enter fullscreen.\n         */\n        enterFullScreen() {\n            const video = this.el_;\n            if (video.paused && video.networkState <= video.HAVE_METADATA) {\n                // attempt to prime the video element for programmatic access\n                // this isn't necessary on the desktop but shouldn't hurt\n                silencePromise(this.el_.play());\n\n                // playing and pausing synchronously during the transition to fullscreen\n                // can get iOS ~6.1 devices into a play/pause loop\n                this.setTimeout(function () {\n                    video.pause();\n                    try {\n                        video.webkitEnterFullScreen();\n                    } catch (e) {\n                        this.trigger('fullscreenerror', e);\n                    }\n                }, 0);\n            } else {\n                try {\n                    video.webkitEnterFullScreen();\n                } catch (e) {\n                    this.trigger('fullscreenerror', e);\n                }\n            }\n        }\n\n        /**\n         * Request that the `HTML5` Tech exit fullscreen.\n         */\n        exitFullScreen() {\n            if (!this.el_.webkitDisplayingFullscreen) {\n                this.trigger('fullscreenerror', new Error('The video is not fullscreen'));\n                return;\n            }\n            this.el_.webkitExitFullScreen();\n        }\n\n        /**\n         * Create a floating video window always on top of other windows so that users may\n         * continue consuming media while they interact with other content sites, or\n         * applications on their device.\n         *\n         * @see [Spec]{@link https://wicg.github.io/picture-in-picture}\n         *\n         * @return {Promise}\n         *         A promise with a Picture-in-Picture window.\n         */\n        requestPictureInPicture() {\n            return this.el_.requestPictureInPicture();\n        }\n\n        /**\n         * Native requestVideoFrameCallback if supported by browser/tech, or fallback\n         * Don't use rVCF on Safari when DRM is playing, as it doesn't fire\n         * Needs to be checked later than the constructor\n         * This will be a false positive for clear sources loaded after a Fairplay source\n         *\n         * @param {function} cb function to call\n         * @return {number} id of request\n         */\n        requestVideoFrameCallback(cb) {\n            if (this.featuresVideoFrameCallback && !this.el_.webkitKeys) {\n                return this.el_.requestVideoFrameCallback(cb);\n            }\n            return super.requestVideoFrameCallback(cb);\n        }\n\n        /**\n         * Native or fallback requestVideoFrameCallback\n         *\n         * @param {number} id request id to cancel\n         */\n        cancelVideoFrameCallback(id) {\n            if (this.featuresVideoFrameCallback && !this.el_.webkitKeys) {\n                this.el_.cancelVideoFrameCallback(id);\n            } else {\n                super.cancelVideoFrameCallback(id);\n            }\n        }\n\n        /**\n         * A getter/setter for the `Html5` Tech's source object.\n         * > Note: Please use {@link Html5#setSource}\n         *\n         * @param {Tech~SourceObject} [src]\n         *        The source object you want to set on the `HTML5` techs element.\n         *\n         * @return {Tech~SourceObject|undefined}\n         *         - The current source object when a source is not passed in.\n         *         - undefined when setting\n         *\n         * @deprecated Since version 5.\n         */\n        src(src) {\n            if (src === undefined) {\n                return this.el_.src;\n            }\n\n            // Setting src through `src` instead of `setSrc` will be deprecated\n            this.setSrc(src);\n        }\n\n        /**\n         * Reset the tech by removing all sources and then calling\n         * {@link Html5.resetMediaElement}.\n         */\n        reset() {\n            Html5.resetMediaElement(this.el_);\n        }\n\n        /**\n         * Get the current source on the `HTML5` Tech. Falls back to returning the source from\n         * the HTML5 media element.\n         *\n         * @return {Tech~SourceObject}\n         *         The current source object from the HTML5 tech. With a fallback to the\n         *         elements source.\n         */\n        currentSrc() {\n            if (this.currentSource_) {\n                return this.currentSource_.src;\n            }\n            return this.el_.currentSrc;\n        }\n\n        /**\n         * Set controls attribute for the HTML5 media Element.\n         *\n         * @param {string} val\n         *        Value to set the controls attribute to\n         */\n        setControls(val) {\n            this.el_.controls = !!val;\n        }\n\n        /**\n         * Create and returns a remote {@link TextTrack} object.\n         *\n         * @param {string} kind\n         *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)\n         *\n         * @param {string} [label]\n         *        Label to identify the text track\n         *\n         * @param {string} [language]\n         *        Two letter language abbreviation\n         *\n         * @return {TextTrack}\n         *         The TextTrack that gets created.\n         */\n        addTextTrack(kind, label, language) {\n            if (!this.featuresNativeTextTracks) {\n                return super.addTextTrack(kind, label, language);\n            }\n            return this.el_.addTextTrack(kind, label, language);\n        }\n\n        /**\n         * Creates either native TextTrack or an emulated TextTrack depending\n         * on the value of `featuresNativeTextTracks`\n         *\n         * @param {Object} options\n         *        The object should contain the options to initialize the TextTrack with.\n         *\n         * @param {string} [options.kind]\n         *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata).\n         *\n         * @param {string} [options.label]\n         *        Label to identify the text track\n         *\n         * @param {string} [options.language]\n         *        Two letter language abbreviation.\n         *\n         * @param {boolean} [options.default]\n         *        Default this track to on.\n         *\n         * @param {string} [options.id]\n         *        The internal id to assign this track.\n         *\n         * @param {string} [options.src]\n         *        A source url for the track.\n         *\n         * @return {HTMLTrackElement}\n         *         The track element that gets created.\n         */\n        createRemoteTextTrack(options) {\n            if (!this.featuresNativeTextTracks) {\n                return super.createRemoteTextTrack(options);\n            }\n            const htmlTrackElement = document.createElement('track');\n            if (options.kind) {\n                htmlTrackElement.kind = options.kind;\n            }\n            if (options.label) {\n                htmlTrackElement.label = options.label;\n            }\n            if (options.language || options.srclang) {\n                htmlTrackElement.srclang = options.language || options.srclang;\n            }\n            if (options.default) {\n                htmlTrackElement.default = options.default;\n            }\n            if (options.id) {\n                htmlTrackElement.id = options.id;\n            }\n            if (options.src) {\n                htmlTrackElement.src = options.src;\n            }\n            return htmlTrackElement;\n        }\n\n        /**\n         * Creates a remote text track object and returns an html track element.\n         *\n         * @param {Object} options The object should contain values for\n         * kind, language, label, and src (location of the WebVTT file)\n         * @param {boolean} [manualCleanup=false] if set to true, the TextTrack\n         * will not be removed from the TextTrackList and HtmlTrackElementList\n         * after a source change\n         * @return {HTMLTrackElement} An Html Track Element.\n         * This can be an emulated {@link HTMLTrackElement} or a native one.\n         *\n         */\n        addRemoteTextTrack(options, manualCleanup) {\n            const htmlTrackElement = super.addRemoteTextTrack(options, manualCleanup);\n            if (this.featuresNativeTextTracks) {\n                this.el().appendChild(htmlTrackElement);\n            }\n            return htmlTrackElement;\n        }\n\n        /**\n         * Remove remote `TextTrack` from `TextTrackList` object\n         *\n         * @param {TextTrack} track\n         *        `TextTrack` object to remove\n         */\n        removeRemoteTextTrack(track) {\n            super.removeRemoteTextTrack(track);\n            if (this.featuresNativeTextTracks) {\n                const tracks = this.$$('track');\n                let i = tracks.length;\n                while (i--) {\n                    if (track === tracks[i] || track === tracks[i].track) {\n                        this.el().removeChild(tracks[i]);\n                    }\n                }\n            }\n        }\n\n        /**\n         * Gets available media playback quality metrics as specified by the W3C's Media\n         * Playback Quality API.\n         *\n         * @see [Spec]{@link https://wicg.github.io/media-playback-quality}\n         *\n         * @return {Object}\n         *         An object with supported media playback quality metrics\n         */\n        getVideoPlaybackQuality() {\n            if (typeof this.el().getVideoPlaybackQuality === 'function') {\n                return this.el().getVideoPlaybackQuality();\n            }\n            const videoPlaybackQuality = {};\n            if (typeof this.el().webkitDroppedFrameCount !== 'undefined' && typeof this.el().webkitDecodedFrameCount !== 'undefined') {\n                videoPlaybackQuality.droppedVideoFrames = this.el().webkitDroppedFrameCount;\n                videoPlaybackQuality.totalVideoFrames = this.el().webkitDecodedFrameCount;\n            }\n            if (window.performance) {\n                videoPlaybackQuality.creationTime = window.performance.now();\n            }\n            return videoPlaybackQuality;\n        }\n    }\n\n    /* HTML5 Support Testing ---------------------------------------------------- */\n\n    /**\n     * Element for testing browser HTML5 media capabilities\n     *\n     * @type {Element}\n     * @constant\n     * @private\n     */\n    defineLazyProperty(Html5, 'TEST_VID', function () {\n        if (!isReal()) {\n            return;\n        }\n        const video = document.createElement('video');\n        const track = document.createElement('track');\n        track.kind = 'captions';\n        track.srclang = 'en';\n        track.label = 'English';\n        video.appendChild(track);\n        return video;\n    });\n\n    /**\n     * Check if HTML5 media is supported by this browser/device.\n     *\n     * @return {boolean}\n     *         - True if HTML5 media is supported.\n     *         - False if HTML5 media is not supported.\n     */\n    Html5.isSupported = function () {\n        // IE with no Media Player is a LIAR! (#984)\n        try {\n            Html5.TEST_VID.volume = 0.5;\n        } catch (e) {\n            return false;\n        }\n        return !!(Html5.TEST_VID && Html5.TEST_VID.canPlayType);\n    };\n\n    /**\n     * Check if the tech can support the given type\n     *\n     * @param {string} type\n     *        The mimetype to check\n     * @return {string} 'probably', 'maybe', or '' (empty string)\n     */\n    Html5.canPlayType = function (type) {\n        return Html5.TEST_VID.canPlayType(type);\n    };\n\n    /**\n     * Check if the tech can support the given source\n     *\n     * @param {Object} srcObj\n     *        The source object\n     * @param {Object} options\n     *        The options passed to the tech\n     * @return {string} 'probably', 'maybe', or '' (empty string)\n     */\n    Html5.canPlaySource = function (srcObj, options) {\n        return Html5.canPlayType(srcObj.type);\n    };\n\n    /**\n     * Check if the volume can be changed in this browser/device.\n     * Volume cannot be changed in a lot of mobile devices.\n     * Specifically, it can't be changed from 1 on iOS.\n     *\n     * @return {boolean}\n     *         - True if volume can be controlled\n     *         - False otherwise\n     */\n    Html5.canControlVolume = function () {\n        // IE will error if Windows Media Player not installed #3315\n        try {\n            const volume = Html5.TEST_VID.volume;\n            Html5.TEST_VID.volume = volume / 2 + 0.1;\n            const canControl = volume !== Html5.TEST_VID.volume;\n\n            // With the introduction of iOS 15, there are cases where the volume is read as\n            // changed but reverts back to its original state at the start of the next tick.\n            // To determine whether volume can be controlled on iOS,\n            // a timeout is set and the volume is checked asynchronously.\n            // Since `features` doesn't currently work asynchronously, the value is manually set.\n            if (canControl && IS_IOS) {\n                window.setTimeout(() => {\n                    if (Html5 && Html5.prototype) {\n                        Html5.prototype.featuresVolumeControl = volume !== Html5.TEST_VID.volume;\n                    }\n                });\n\n                // default iOS to false, which will be updated in the timeout above.\n                return false;\n            }\n            return canControl;\n        } catch (e) {\n            return false;\n        }\n    };\n\n    /**\n     * Check if the volume can be muted in this browser/device.\n     * Some devices, e.g. iOS, don't allow changing volume\n     * but permits muting/unmuting.\n     *\n     * @return {boolean}\n     *      - True if volume can be muted\n     *      - False otherwise\n     */\n    Html5.canMuteVolume = function () {\n        try {\n            const muted = Html5.TEST_VID.muted;\n\n            // in some versions of iOS muted property doesn't always\n            // work, so we want to set both property and attribute\n            Html5.TEST_VID.muted = !muted;\n            if (Html5.TEST_VID.muted) {\n                setAttribute(Html5.TEST_VID, 'muted', 'muted');\n            } else {\n                removeAttribute(Html5.TEST_VID, 'muted', 'muted');\n            }\n            return muted !== Html5.TEST_VID.muted;\n        } catch (e) {\n            return false;\n        }\n    };\n\n    /**\n     * Check if the playback rate can be changed in this browser/device.\n     *\n     * @return {boolean}\n     *         - True if playback rate can be controlled\n     *         - False otherwise\n     */\n    Html5.canControlPlaybackRate = function () {\n        // Playback rate API is implemented in Android Chrome, but doesn't do anything\n        // https://github.com/videojs/video.js/issues/3180\n        if (IS_ANDROID && IS_CHROME && CHROME_VERSION < 58) {\n            return false;\n        }\n        // IE will error if Windows Media Player not installed #3315\n        try {\n            const playbackRate = Html5.TEST_VID.playbackRate;\n            Html5.TEST_VID.playbackRate = playbackRate / 2 + 0.1;\n            return playbackRate !== Html5.TEST_VID.playbackRate;\n        } catch (e) {\n            return false;\n        }\n    };\n\n    /**\n     * Check if we can override a video/audio elements attributes, with\n     * Object.defineProperty.\n     *\n     * @return {boolean}\n     *         - True if builtin attributes can be overridden\n     *         - False otherwise\n     */\n    Html5.canOverrideAttributes = function () {\n        // if we cannot overwrite the src/innerHTML property, there is no support\n        // iOS 7 safari for instance cannot do this.\n        try {\n            const noop = () => {};\n            Object.defineProperty(document.createElement('video'), 'src', {\n                get: noop,\n                set: noop\n            });\n            Object.defineProperty(document.createElement('audio'), 'src', {\n                get: noop,\n                set: noop\n            });\n            Object.defineProperty(document.createElement('video'), 'innerHTML', {\n                get: noop,\n                set: noop\n            });\n            Object.defineProperty(document.createElement('audio'), 'innerHTML', {\n                get: noop,\n                set: noop\n            });\n        } catch (e) {\n            return false;\n        }\n        return true;\n    };\n\n    /**\n     * Check to see if native `TextTrack`s are supported by this browser/device.\n     *\n     * @return {boolean}\n     *         - True if native `TextTrack`s are supported.\n     *         - False otherwise\n     */\n    Html5.supportsNativeTextTracks = function () {\n        return IS_ANY_SAFARI || IS_IOS && IS_CHROME;\n    };\n\n    /**\n     * Check to see if native `VideoTrack`s are supported by this browser/device\n     *\n     * @return {boolean}\n     *        - True if native `VideoTrack`s are supported.\n     *        - False otherwise\n     */\n    Html5.supportsNativeVideoTracks = function () {\n        return !!(Html5.TEST_VID && Html5.TEST_VID.videoTracks);\n    };\n\n    /**\n     * Check to see if native `AudioTrack`s are supported by this browser/device\n     *\n     * @return {boolean}\n     *        - True if native `AudioTrack`s are supported.\n     *        - False otherwise\n     */\n    Html5.supportsNativeAudioTracks = function () {\n        return !!(Html5.TEST_VID && Html5.TEST_VID.audioTracks);\n    };\n\n    /**\n     * An array of events available on the Html5 tech.\n     *\n     * @private\n     * @type {Array}\n     */\n    Html5.Events = ['loadstart', 'suspend', 'abort', 'error', 'emptied', 'stalled', 'loadedmetadata', 'loadeddata', 'canplay', 'canplaythrough', 'playing', 'waiting', 'seeking', 'seeked', 'ended', 'durationchange', 'timeupdate', 'progress', 'play', 'pause', 'ratechange', 'resize', 'volumechange'];\n\n    /**\n     * Boolean indicating whether the `Tech` supports volume control.\n     *\n     * @type {boolean}\n     * @default {@link Html5.canControlVolume}\n     */\n    /**\n     * Boolean indicating whether the `Tech` supports muting volume.\n     *\n     * @type {boolean}\n     * @default {@link Html5.canMuteVolume}\n     */\n\n    /**\n     * Boolean indicating whether the `Tech` supports changing the speed at which the media\n     * plays. Examples:\n     *   - Set player to play 2x (twice) as fast\n     *   - Set player to play 0.5x (half) as fast\n     *\n     * @type {boolean}\n     * @default {@link Html5.canControlPlaybackRate}\n     */\n\n    /**\n     * Boolean indicating whether the `Tech` supports the `sourceset` event.\n     *\n     * @type {boolean}\n     * @default\n     */\n    /**\n     * Boolean indicating whether the `HTML5` tech currently supports native `TextTrack`s.\n     *\n     * @type {boolean}\n     * @default {@link Html5.supportsNativeTextTracks}\n     */\n    /**\n     * Boolean indicating whether the `HTML5` tech currently supports native `VideoTrack`s.\n     *\n     * @type {boolean}\n     * @default {@link Html5.supportsNativeVideoTracks}\n     */\n    /**\n     * Boolean indicating whether the `HTML5` tech currently supports native `AudioTrack`s.\n     *\n     * @type {boolean}\n     * @default {@link Html5.supportsNativeAudioTracks}\n     */\n    [['featuresMuteControl', 'canMuteVolume'], ['featuresPlaybackRate', 'canControlPlaybackRate'], ['featuresSourceset', 'canOverrideAttributes'], ['featuresNativeTextTracks', 'supportsNativeTextTracks'], ['featuresNativeVideoTracks', 'supportsNativeVideoTracks'], ['featuresNativeAudioTracks', 'supportsNativeAudioTracks']].forEach(function ([key, fn]) {\n        defineLazyProperty(Html5.prototype, key, () => Html5[fn](), true);\n    });\n    Html5.prototype.featuresVolumeControl = Html5.canControlVolume();\n\n    /**\n     * Boolean indicating whether the `HTML5` tech currently supports the media element\n     * moving in the DOM. iOS breaks if you move the media element, so this is set this to\n     * false there. Everywhere else this should be true.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Html5.prototype.movingMediaElementInDOM = !IS_IOS;\n\n    // TODO: Previous comment: No longer appears to be used. Can probably be removed.\n    //       Is this true?\n    /**\n     * Boolean indicating whether the `HTML5` tech currently supports automatic media resize\n     * when going into fullscreen.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Html5.prototype.featuresFullscreenResize = true;\n\n    /**\n     * Boolean indicating whether the `HTML5` tech currently supports the progress event.\n     * If this is false, manual `progress` events will be triggered instead.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Html5.prototype.featuresProgressEvents = true;\n\n    /**\n     * Boolean indicating whether the `HTML5` tech currently supports the timeupdate event.\n     * If this is false, manual `timeupdate` events will be triggered instead.\n     *\n     * @default\n     */\n    Html5.prototype.featuresTimeupdateEvents = true;\n\n    /**\n     * Whether the HTML5 el supports `requestVideoFrameCallback`\n     *\n     * @type {boolean}\n     */\n    Html5.prototype.featuresVideoFrameCallback = !!(Html5.TEST_VID && Html5.TEST_VID.requestVideoFrameCallback);\n    Html5.disposeMediaElement = function (el) {\n        if (!el) {\n            return;\n        }\n        if (el.parentNode) {\n            el.parentNode.removeChild(el);\n        }\n\n        // remove any child track or source nodes to prevent their loading\n        while (el.hasChildNodes()) {\n            el.removeChild(el.firstChild);\n        }\n\n        // remove any src reference. not setting `src=''` because that causes a warning\n        // in firefox\n        el.removeAttribute('src');\n\n        // force the media element to update its loading state by calling load()\n        // however IE on Windows 7N has a bug that throws an error so need a try/catch (#793)\n        if (typeof el.load === 'function') {\n            // wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473)\n            (function () {\n                try {\n                    el.load();\n                } catch (e) {\n                    // not supported\n                }\n            })();\n        }\n    };\n    Html5.resetMediaElement = function (el) {\n        if (!el) {\n            return;\n        }\n        const sources = el.querySelectorAll('source');\n        let i = sources.length;\n        while (i--) {\n            el.removeChild(sources[i]);\n        }\n\n        // remove any src reference.\n        // not setting `src=''` because that throws an error\n        el.removeAttribute('src');\n        if (typeof el.load === 'function') {\n            // wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473)\n            (function () {\n                try {\n                    el.load();\n                } catch (e) {\n                    // satisfy linter\n                }\n            })();\n        }\n    };\n\n    /* Native HTML5 element property wrapping ----------------------------------- */\n    // Wrap native boolean attributes with getters that check both property and attribute\n    // The list is as followed:\n    // muted, defaultMuted, autoplay, controls, loop, playsinline\n    [\n        /**\n         * Get the value of `muted` from the media element. `muted` indicates\n         * that the volume for the media should be set to silent. This does not actually change\n         * the `volume` attribute.\n         *\n         * @method Html5#muted\n         * @return {boolean}\n         *         - True if the value of `volume` should be ignored and the audio set to silent.\n         *         - False if the value of `volume` should be used.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted}\n         */\n        'muted',\n        /**\n         * Get the value of `defaultMuted` from the media element. `defaultMuted` indicates\n         * whether the media should start muted or not. Only changes the default state of the\n         * media. `muted` and `defaultMuted` can have different values. {@link Html5#muted} indicates the\n         * current state.\n         *\n         * @method Html5#defaultMuted\n         * @return {boolean}\n         *         - The value of `defaultMuted` from the media element.\n         *         - True indicates that the media should start muted.\n         *         - False indicates that the media should not start muted\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted}\n         */\n        'defaultMuted',\n        /**\n         * Get the value of `autoplay` from the media element. `autoplay` indicates\n         * that the media should start to play as soon as the page is ready.\n         *\n         * @method Html5#autoplay\n         * @return {boolean}\n         *         - The value of `autoplay` from the media element.\n         *         - True indicates that the media should start as soon as the page loads.\n         *         - False indicates that the media should not start as soon as the page loads.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay}\n         */\n        'autoplay',\n        /**\n         * Get the value of `controls` from the media element. `controls` indicates\n         * whether the native media controls should be shown or hidden.\n         *\n         * @method Html5#controls\n         * @return {boolean}\n         *         - The value of `controls` from the media element.\n         *         - True indicates that native controls should be showing.\n         *         - False indicates that native controls should be hidden.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-controls}\n         */\n        'controls',\n        /**\n         * Get the value of `loop` from the media element. `loop` indicates\n         * that the media should return to the start of the media and continue playing once\n         * it reaches the end.\n         *\n         * @method Html5#loop\n         * @return {boolean}\n         *         - The value of `loop` from the media element.\n         *         - True indicates that playback should seek back to start once\n         *           the end of a media is reached.\n         *         - False indicates that playback should not loop back to the start when the\n         *           end of the media is reached.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop}\n         */\n        'loop',\n        /**\n         * Get the value of `playsinline` from the media element. `playsinline` indicates\n         * to the browser that non-fullscreen playback is preferred when fullscreen\n         * playback is the native default, such as in iOS Safari.\n         *\n         * @method Html5#playsinline\n         * @return {boolean}\n         *         - The value of `playsinline` from the media element.\n         *         - True indicates that the media should play inline.\n         *         - False indicates that the media should not play inline.\n         *\n         * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}\n         */\n        'playsinline'].forEach(function (prop) {\n        Html5.prototype[prop] = function () {\n            return this.el_[prop] || this.el_.hasAttribute(prop);\n        };\n    });\n\n    // Wrap native boolean attributes with setters that set both property and attribute\n    // The list is as followed:\n    // setMuted, setDefaultMuted, setAutoplay, setLoop, setPlaysinline\n    // setControls is special-cased above\n    [\n        /**\n         * Set the value of `muted` on the media element. `muted` indicates that the current\n         * audio level should be silent.\n         *\n         * @method Html5#setMuted\n         * @param {boolean} muted\n         *        - True if the audio should be set to silent\n         *        - False otherwise\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted}\n         */\n        'muted',\n        /**\n         * Set the value of `defaultMuted` on the media element. `defaultMuted` indicates that the current\n         * audio level should be silent, but will only effect the muted level on initial playback..\n         *\n         * @method Html5.prototype.setDefaultMuted\n         * @param {boolean} defaultMuted\n         *        - True if the audio should be set to silent\n         *        - False otherwise\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted}\n         */\n        'defaultMuted',\n        /**\n         * Set the value of `autoplay` on the media element. `autoplay` indicates\n         * that the media should start to play as soon as the page is ready.\n         *\n         * @method Html5#setAutoplay\n         * @param {boolean} autoplay\n         *         - True indicates that the media should start as soon as the page loads.\n         *         - False indicates that the media should not start as soon as the page loads.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay}\n         */\n        'autoplay',\n        /**\n         * Set the value of `loop` on the media element. `loop` indicates\n         * that the media should return to the start of the media and continue playing once\n         * it reaches the end.\n         *\n         * @method Html5#setLoop\n         * @param {boolean} loop\n         *         - True indicates that playback should seek back to start once\n         *           the end of a media is reached.\n         *         - False indicates that playback should not loop back to the start when the\n         *           end of the media is reached.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop}\n         */\n        'loop',\n        /**\n         * Set the value of `playsinline` from the media element. `playsinline` indicates\n         * to the browser that non-fullscreen playback is preferred when fullscreen\n         * playback is the native default, such as in iOS Safari.\n         *\n         * @method Html5#setPlaysinline\n         * @param {boolean} playsinline\n         *         - True indicates that the media should play inline.\n         *         - False indicates that the media should not play inline.\n         *\n         * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}\n         */\n        'playsinline'].forEach(function (prop) {\n        Html5.prototype['set' + toTitleCase$1(prop)] = function (v) {\n            this.el_[prop] = v;\n            if (v) {\n                this.el_.setAttribute(prop, prop);\n            } else {\n                this.el_.removeAttribute(prop);\n            }\n        };\n    });\n\n    // Wrap native properties with a getter\n    // The list is as followed\n    // paused, currentTime, buffered, volume, poster, preload, error, seeking\n    // seekable, ended, playbackRate, defaultPlaybackRate, disablePictureInPicture\n    // played, networkState, readyState, videoWidth, videoHeight, crossOrigin\n    [\n        /**\n         * Get the value of `paused` from the media element. `paused` indicates whether the media element\n         * is currently paused or not.\n         *\n         * @method Html5#paused\n         * @return {boolean}\n         *         The value of `paused` from the media element.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-paused}\n         */\n        'paused',\n        /**\n         * Get the value of `currentTime` from the media element. `currentTime` indicates\n         * the current second that the media is at in playback.\n         *\n         * @method Html5#currentTime\n         * @return {number}\n         *         The value of `currentTime` from the media element.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-currenttime}\n         */\n        'currentTime',\n        /**\n         * Get the value of `buffered` from the media element. `buffered` is a `TimeRange`\n         * object that represents the parts of the media that are already downloaded and\n         * available for playback.\n         *\n         * @method Html5#buffered\n         * @return {TimeRange}\n         *         The value of `buffered` from the media element.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-buffered}\n         */\n        'buffered',\n        /**\n         * Get the value of `volume` from the media element. `volume` indicates\n         * the current playback volume of audio for a media. `volume` will be a value from 0\n         * (silent) to 1 (loudest and default).\n         *\n         * @method Html5#volume\n         * @return {number}\n         *         The value of `volume` from the media element. Value will be between 0-1.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume}\n         */\n        'volume',\n        /**\n         * Get the value of `poster` from the media element. `poster` indicates\n         * that the url of an image file that can/will be shown when no media data is available.\n         *\n         * @method Html5#poster\n         * @return {string}\n         *         The value of `poster` from the media element. Value will be a url to an\n         *         image.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-video-poster}\n         */\n        'poster',\n        /**\n         * Get the value of `preload` from the media element. `preload` indicates\n         * what should download before the media is interacted with. It can have the following\n         * values:\n         * - none: nothing should be downloaded\n         * - metadata: poster and the first few frames of the media may be downloaded to get\n         *   media dimensions and other metadata\n         * - auto: allow the media and metadata for the media to be downloaded before\n         *    interaction\n         *\n         * @method Html5#preload\n         * @return {string}\n         *         The value of `preload` from the media element. Will be 'none', 'metadata',\n         *         or 'auto'.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload}\n         */\n        'preload',\n        /**\n         * Get the value of the `error` from the media element. `error` indicates any\n         * MediaError that may have occurred during playback. If error returns null there is no\n         * current error.\n         *\n         * @method Html5#error\n         * @return {MediaError|null}\n         *         The value of `error` from the media element. Will be `MediaError` if there\n         *         is a current error and null otherwise.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-error}\n         */\n        'error',\n        /**\n         * Get the value of `seeking` from the media element. `seeking` indicates whether the\n         * media is currently seeking to a new position or not.\n         *\n         * @method Html5#seeking\n         * @return {boolean}\n         *         - The value of `seeking` from the media element.\n         *         - True indicates that the media is currently seeking to a new position.\n         *         - False indicates that the media is not seeking to a new position at this time.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seeking}\n         */\n        'seeking',\n        /**\n         * Get the value of `seekable` from the media element. `seekable` returns a\n         * `TimeRange` object indicating ranges of time that can currently be `seeked` to.\n         *\n         * @method Html5#seekable\n         * @return {TimeRange}\n         *         The value of `seekable` from the media element. A `TimeRange` object\n         *         indicating the current ranges of time that can be seeked to.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seekable}\n         */\n        'seekable',\n        /**\n         * Get the value of `ended` from the media element. `ended` indicates whether\n         * the media has reached the end or not.\n         *\n         * @method Html5#ended\n         * @return {boolean}\n         *         - The value of `ended` from the media element.\n         *         - True indicates that the media has ended.\n         *         - False indicates that the media has not ended.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-ended}\n         */\n        'ended',\n        /**\n         * Get the value of `playbackRate` from the media element. `playbackRate` indicates\n         * the rate at which the media is currently playing back. Examples:\n         *   - if playbackRate is set to 2, media will play twice as fast.\n         *   - if playbackRate is set to 0.5, media will play half as fast.\n         *\n         * @method Html5#playbackRate\n         * @return {number}\n         *         The value of `playbackRate` from the media element. A number indicating\n         *         the current playback speed of the media, where 1 is normal speed.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}\n         */\n        'playbackRate',\n        /**\n         * Get the value of `defaultPlaybackRate` from the media element. `defaultPlaybackRate` indicates\n         * the rate at which the media is currently playing back. This value will not indicate the current\n         * `playbackRate` after playback has started, use {@link Html5#playbackRate} for that.\n         *\n         * Examples:\n         *   - if defaultPlaybackRate is set to 2, media will play twice as fast.\n         *   - if defaultPlaybackRate is set to 0.5, media will play half as fast.\n         *\n         * @method Html5.prototype.defaultPlaybackRate\n         * @return {number}\n         *         The value of `defaultPlaybackRate` from the media element. A number indicating\n         *         the current playback speed of the media, where 1 is normal speed.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}\n         */\n        'defaultPlaybackRate',\n        /**\n         * Get the value of 'disablePictureInPicture' from the video element.\n         *\n         * @method Html5#disablePictureInPicture\n         * @return {boolean} value\n         *         - The value of `disablePictureInPicture` from the video element.\n         *         - True indicates that the video can't be played in Picture-In-Picture mode\n         *         - False indicates that the video can be played in Picture-In-Picture mode\n         *\n         * @see [Spec]{@link https://w3c.github.io/picture-in-picture/#disable-pip}\n         */\n        'disablePictureInPicture',\n        /**\n         * Get the value of `played` from the media element. `played` returns a `TimeRange`\n         * object representing points in the media timeline that have been played.\n         *\n         * @method Html5#played\n         * @return {TimeRange}\n         *         The value of `played` from the media element. A `TimeRange` object indicating\n         *         the ranges of time that have been played.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-played}\n         */\n        'played',\n        /**\n         * Get the value of `networkState` from the media element. `networkState` indicates\n         * the current network state. It returns an enumeration from the following list:\n         * - 0: NETWORK_EMPTY\n         * - 1: NETWORK_IDLE\n         * - 2: NETWORK_LOADING\n         * - 3: NETWORK_NO_SOURCE\n         *\n         * @method Html5#networkState\n         * @return {number}\n         *         The value of `networkState` from the media element. This will be a number\n         *         from the list in the description.\n         *\n         * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-networkstate}\n         */\n        'networkState',\n        /**\n         * Get the value of `readyState` from the media element. `readyState` indicates\n         * the current state of the media element. It returns an enumeration from the\n         * following list:\n         * - 0: HAVE_NOTHING\n         * - 1: HAVE_METADATA\n         * - 2: HAVE_CURRENT_DATA\n         * - 3: HAVE_FUTURE_DATA\n         * - 4: HAVE_ENOUGH_DATA\n         *\n         * @method Html5#readyState\n         * @return {number}\n         *         The value of `readyState` from the media element. This will be a number\n         *         from the list in the description.\n         *\n         * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#ready-states}\n         */\n        'readyState',\n        /**\n         * Get the value of `videoWidth` from the video element. `videoWidth` indicates\n         * the current width of the video in css pixels.\n         *\n         * @method Html5#videoWidth\n         * @return {number}\n         *         The value of `videoWidth` from the video element. This will be a number\n         *         in css pixels.\n         *\n         * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth}\n         */\n        'videoWidth',\n        /**\n         * Get the value of `videoHeight` from the video element. `videoHeight` indicates\n         * the current height of the video in css pixels.\n         *\n         * @method Html5#videoHeight\n         * @return {number}\n         *         The value of `videoHeight` from the video element. This will be a number\n         *         in css pixels.\n         *\n         * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth}\n         */\n        'videoHeight',\n        /**\n         * Get the value of `crossOrigin` from the media element. `crossOrigin` indicates\n         * to the browser that should sent the cookies along with the requests for the\n         * different assets/playlists\n         *\n         * @method Html5#crossOrigin\n         * @return {string}\n         *         - anonymous indicates that the media should not sent cookies.\n         *         - use-credentials indicates that the media should sent cookies along the requests.\n         *\n         * @see [Spec]{@link https://html.spec.whatwg.org/#attr-media-crossorigin}\n         */\n        'crossOrigin'].forEach(function (prop) {\n        Html5.prototype[prop] = function () {\n            return this.el_[prop];\n        };\n    });\n\n    // Wrap native properties with a setter in this format:\n    // set + toTitleCase(name)\n    // The list is as follows:\n    // setVolume, setSrc, setPoster, setPreload, setPlaybackRate, setDefaultPlaybackRate,\n    // setDisablePictureInPicture, setCrossOrigin\n    [\n        /**\n         * Set the value of `volume` on the media element. `volume` indicates the current\n         * audio level as a percentage in decimal form. This means that 1 is 100%, 0.5 is 50%, and\n         * so on.\n         *\n         * @method Html5#setVolume\n         * @param {number} percentAsDecimal\n         *        The volume percent as a decimal. Valid range is from 0-1.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume}\n         */\n        'volume',\n        /**\n         * Set the value of `src` on the media element. `src` indicates the current\n         * {@link Tech~SourceObject} for the media.\n         *\n         * @method Html5#setSrc\n         * @param {Tech~SourceObject} src\n         *        The source object to set as the current source.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-src}\n         */\n        'src',\n        /**\n         * Set the value of `poster` on the media element. `poster` is the url to\n         * an image file that can/will be shown when no media data is available.\n         *\n         * @method Html5#setPoster\n         * @param {string} poster\n         *        The url to an image that should be used as the `poster` for the media\n         *        element.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-poster}\n         */\n        'poster',\n        /**\n         * Set the value of `preload` on the media element. `preload` indicates\n         * what should download before the media is interacted with. It can have the following\n         * values:\n         * - none: nothing should be downloaded\n         * - metadata: poster and the first few frames of the media may be downloaded to get\n         *   media dimensions and other metadata\n         * - auto: allow the media and metadata for the media to be downloaded before\n         *    interaction\n         *\n         * @method Html5#setPreload\n         * @param {string} preload\n         *         The value of `preload` to set on the media element. Must be 'none', 'metadata',\n         *         or 'auto'.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload}\n         */\n        'preload',\n        /**\n         * Set the value of `playbackRate` on the media element. `playbackRate` indicates\n         * the rate at which the media should play back. Examples:\n         *   - if playbackRate is set to 2, media will play twice as fast.\n         *   - if playbackRate is set to 0.5, media will play half as fast.\n         *\n         * @method Html5#setPlaybackRate\n         * @return {number}\n         *         The value of `playbackRate` from the media element. A number indicating\n         *         the current playback speed of the media, where 1 is normal speed.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}\n         */\n        'playbackRate',\n        /**\n         * Set the value of `defaultPlaybackRate` on the media element. `defaultPlaybackRate` indicates\n         * the rate at which the media should play back upon initial startup. Changing this value\n         * after a video has started will do nothing. Instead you should used {@link Html5#setPlaybackRate}.\n         *\n         * Example Values:\n         *   - if playbackRate is set to 2, media will play twice as fast.\n         *   - if playbackRate is set to 0.5, media will play half as fast.\n         *\n         * @method Html5.prototype.setDefaultPlaybackRate\n         * @return {number}\n         *         The value of `defaultPlaybackRate` from the media element. A number indicating\n         *         the current playback speed of the media, where 1 is normal speed.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultplaybackrate}\n         */\n        'defaultPlaybackRate',\n        /**\n         * Prevents the browser from suggesting a Picture-in-Picture context menu\n         * or to request Picture-in-Picture automatically in some cases.\n         *\n         * @method Html5#setDisablePictureInPicture\n         * @param {boolean} value\n         *         The true value will disable Picture-in-Picture mode.\n         *\n         * @see [Spec]{@link https://w3c.github.io/picture-in-picture/#disable-pip}\n         */\n        'disablePictureInPicture',\n        /**\n         * Set the value of `crossOrigin` from the media element. `crossOrigin` indicates\n         * to the browser that should sent the cookies along with the requests for the\n         * different assets/playlists\n         *\n         * @method Html5#setCrossOrigin\n         * @param {string} crossOrigin\n         *         - anonymous indicates that the media should not sent cookies.\n         *         - use-credentials indicates that the media should sent cookies along the requests.\n         *\n         * @see [Spec]{@link https://html.spec.whatwg.org/#attr-media-crossorigin}\n         */\n        'crossOrigin'].forEach(function (prop) {\n        Html5.prototype['set' + toTitleCase$1(prop)] = function (v) {\n            this.el_[prop] = v;\n        };\n    });\n\n    // wrap native functions with a function\n    // The list is as follows:\n    // pause, load, play\n    [\n        /**\n         * A wrapper around the media elements `pause` function. This will call the `HTML5`\n         * media elements `pause` function.\n         *\n         * @method Html5#pause\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-pause}\n         */\n        'pause',\n        /**\n         * A wrapper around the media elements `load` function. This will call the `HTML5`s\n         * media element `load` function.\n         *\n         * @method Html5#load\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-load}\n         */\n        'load',\n        /**\n         * A wrapper around the media elements `play` function. This will call the `HTML5`s\n         * media element `play` function.\n         *\n         * @method Html5#play\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-play}\n         */\n        'play'].forEach(function (prop) {\n        Html5.prototype[prop] = function () {\n            return this.el_[prop]();\n        };\n    });\n    Tech.withSourceHandlers(Html5);\n\n    /**\n     * Native source handler for Html5, simply passes the source to the media element.\n     *\n     * @property {Tech~SourceObject} source\n     *        The source object\n     *\n     * @property {Html5} tech\n     *        The instance of the HTML5 tech.\n     */\n    Html5.nativeSourceHandler = {};\n\n    /**\n     * Check if the media element can play the given mime type.\n     *\n     * @param {string} type\n     *        The mimetype to check\n     *\n     * @return {string}\n     *         'probably', 'maybe', or '' (empty string)\n     */\n    Html5.nativeSourceHandler.canPlayType = function (type) {\n        // IE without MediaPlayer throws an error (#519)\n        try {\n            return Html5.TEST_VID.canPlayType(type);\n        } catch (e) {\n            return '';\n        }\n    };\n\n    /**\n     * Check if the media element can handle a source natively.\n     *\n     * @param {Tech~SourceObject} source\n     *         The source object\n     *\n     * @param {Object} [options]\n     *         Options to be passed to the tech.\n     *\n     * @return {string}\n     *         'probably', 'maybe', or '' (empty string).\n     */\n    Html5.nativeSourceHandler.canHandleSource = function (source, options) {\n        // If a type was provided we should rely on that\n        if (source.type) {\n            return Html5.nativeSourceHandler.canPlayType(source.type);\n\n            // If no type, fall back to checking 'video/[EXTENSION]'\n        } else if (source.src) {\n            const ext = getFileExtension(source.src);\n            return Html5.nativeSourceHandler.canPlayType(`video/${ext}`);\n        }\n        return '';\n    };\n\n    /**\n     * Pass the source to the native media element.\n     *\n     * @param {Tech~SourceObject} source\n     *        The source object\n     *\n     * @param {Html5} tech\n     *        The instance of the Html5 tech\n     *\n     * @param {Object} [options]\n     *        The options to pass to the source\n     */\n    Html5.nativeSourceHandler.handleSource = function (source, tech, options) {\n        tech.setSrc(source.src);\n    };\n\n    /**\n     * A noop for the native dispose function, as cleanup is not needed.\n     */\n    Html5.nativeSourceHandler.dispose = function () {};\n\n    // Register the native source handler\n    Html5.registerSourceHandler(Html5.nativeSourceHandler);\n    Tech.registerTech('Html5', Html5);\n\n    /**\n     * @file player.js\n     */\n\n        // The following tech events are simply re-triggered\n        // on the player when they happen\n    const TECH_EVENTS_RETRIGGER = [\n            /**\n             * Fired while the user agent is downloading media data.\n             *\n             * @event Player#progress\n             * @type {Event}\n             */\n            /**\n             * Retrigger the `progress` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechProgress_\n             * @fires Player#progress\n             * @listens Tech#progress\n             */\n            'progress',\n            /**\n             * Fires when the loading of an audio/video is aborted.\n             *\n             * @event Player#abort\n             * @type {Event}\n             */\n            /**\n             * Retrigger the `abort` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechAbort_\n             * @fires Player#abort\n             * @listens Tech#abort\n             */\n            'abort',\n            /**\n             * Fires when the browser is intentionally not getting media data.\n             *\n             * @event Player#suspend\n             * @type {Event}\n             */\n            /**\n             * Retrigger the `suspend` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechSuspend_\n             * @fires Player#suspend\n             * @listens Tech#suspend\n             */\n            'suspend',\n            /**\n             * Fires when the current playlist is empty.\n             *\n             * @event Player#emptied\n             * @type {Event}\n             */\n            /**\n             * Retrigger the `emptied` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechEmptied_\n             * @fires Player#emptied\n             * @listens Tech#emptied\n             */\n            'emptied',\n            /**\n             * Fires when the browser is trying to get media data, but data is not available.\n             *\n             * @event Player#stalled\n             * @type {Event}\n             */\n            /**\n             * Retrigger the `stalled` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechStalled_\n             * @fires Player#stalled\n             * @listens Tech#stalled\n             */\n            'stalled',\n            /**\n             * Fires when the browser has loaded meta data for the audio/video.\n             *\n             * @event Player#loadedmetadata\n             * @type {Event}\n             */\n            /**\n             * Retrigger the `loadedmetadata` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechLoadedmetadata_\n             * @fires Player#loadedmetadata\n             * @listens Tech#loadedmetadata\n             */\n            'loadedmetadata',\n            /**\n             * Fires when the browser has loaded the current frame of the audio/video.\n             *\n             * @event Player#loadeddata\n             * @type {event}\n             */\n            /**\n             * Retrigger the `loadeddata` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechLoaddeddata_\n             * @fires Player#loadeddata\n             * @listens Tech#loadeddata\n             */\n            'loadeddata',\n            /**\n             * Fires when the current playback position has changed.\n             *\n             * @event Player#timeupdate\n             * @type {event}\n             */\n            /**\n             * Retrigger the `timeupdate` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechTimeUpdate_\n             * @fires Player#timeupdate\n             * @listens Tech#timeupdate\n             */\n            'timeupdate',\n            /**\n             * Fires when the video's intrinsic dimensions change\n             *\n             * @event Player#resize\n             * @type {event}\n             */\n            /**\n             * Retrigger the `resize` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechResize_\n             * @fires Player#resize\n             * @listens Tech#resize\n             */\n            'resize',\n            /**\n             * Fires when the volume has been changed\n             *\n             * @event Player#volumechange\n             * @type {event}\n             */\n            /**\n             * Retrigger the `volumechange` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechVolumechange_\n             * @fires Player#volumechange\n             * @listens Tech#volumechange\n             */\n            'volumechange',\n            /**\n             * Fires when the text track has been changed\n             *\n             * @event Player#texttrackchange\n             * @type {event}\n             */\n            /**\n             * Retrigger the `texttrackchange` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechTexttrackchange_\n             * @fires Player#texttrackchange\n             * @listens Tech#texttrackchange\n             */\n            'texttrackchange'];\n\n    // events to queue when playback rate is zero\n    // this is a hash for the sole purpose of mapping non-camel-cased event names\n    // to camel-cased function names\n    const TECH_EVENTS_QUEUE = {\n        canplay: 'CanPlay',\n        canplaythrough: 'CanPlayThrough',\n        playing: 'Playing',\n        seeked: 'Seeked'\n    };\n    const BREAKPOINT_ORDER = ['tiny', 'xsmall', 'small', 'medium', 'large', 'xlarge', 'huge'];\n    const BREAKPOINT_CLASSES = {};\n\n    // grep: vjs-layout-tiny\n    // grep: vjs-layout-x-small\n    // grep: vjs-layout-small\n    // grep: vjs-layout-medium\n    // grep: vjs-layout-large\n    // grep: vjs-layout-x-large\n    // grep: vjs-layout-huge\n    BREAKPOINT_ORDER.forEach(k => {\n        const v = k.charAt(0) === 'x' ? `x-${k.substring(1)}` : k;\n        BREAKPOINT_CLASSES[k] = `vjs-layout-${v}`;\n    });\n    const DEFAULT_BREAKPOINTS = {\n        tiny: 210,\n        xsmall: 320,\n        small: 425,\n        medium: 768,\n        large: 1440,\n        xlarge: 2560,\n        huge: Infinity\n    };\n\n    /**\n     * An instance of the `Player` class is created when any of the Video.js setup methods\n     * are used to initialize a video.\n     *\n     * After an instance has been created it can be accessed globally in three ways:\n     * 1. By calling `videojs.getPlayer('example_video_1');`\n     * 2. By calling `videojs('example_video_1');` (not recomended)\n     * 2. By using it directly via  `videojs.players.example_video_1;`\n     *\n     * @extends Component\n     * @global\n     */\n    class Player extends Component$1 {\n        /**\n         * Create an instance of this class.\n         *\n         * @param {Element} tag\n         *        The original video DOM element used for configuring options.\n         *\n         * @param {Object} [options]\n         *        Object of option names and values.\n         *\n         * @param {Function} [ready]\n         *        Ready callback function.\n         */\n        constructor(tag, options, ready) {\n            // Make sure tag ID exists\n            tag.id = tag.id || options.id || `vjs_video_${newGUID()}`;\n\n            // Set Options\n            // The options argument overrides options set in the video tag\n            // which overrides globally set options.\n            // This latter part coincides with the load order\n            // (tag must exist before Player)\n            options = Object.assign(Player.getTagSettings(tag), options);\n\n            // Delay the initialization of children because we need to set up\n            // player properties first, and can't use `this` before `super()`\n            options.initChildren = false;\n\n            // Same with creating the element\n            options.createEl = false;\n\n            // don't auto mixin the evented mixin\n            options.evented = false;\n\n            // we don't want the player to report touch activity on itself\n            // see enableTouchActivity in Component\n            options.reportTouchActivity = false;\n\n            // If language is not set, get the closest lang attribute\n            if (!options.language) {\n                const closest = tag.closest('[lang]');\n                if (closest) {\n                    options.language = closest.getAttribute('lang');\n                }\n            }\n\n            // Run base component initializing with new options\n            super(null, options, ready);\n\n            // Create bound methods for document listeners.\n            this.boundDocumentFullscreenChange_ = e => this.documentFullscreenChange_(e);\n            this.boundFullWindowOnEscKey_ = e => this.fullWindowOnEscKey(e);\n            this.boundUpdateStyleEl_ = e => this.updateStyleEl_(e);\n            this.boundApplyInitTime_ = e => this.applyInitTime_(e);\n            this.boundUpdateCurrentBreakpoint_ = e => this.updateCurrentBreakpoint_(e);\n            this.boundHandleTechClick_ = e => this.handleTechClick_(e);\n            this.boundHandleTechDoubleClick_ = e => this.handleTechDoubleClick_(e);\n            this.boundHandleTechTouchStart_ = e => this.handleTechTouchStart_(e);\n            this.boundHandleTechTouchMove_ = e => this.handleTechTouchMove_(e);\n            this.boundHandleTechTouchEnd_ = e => this.handleTechTouchEnd_(e);\n            this.boundHandleTechTap_ = e => this.handleTechTap_(e);\n\n            // default isFullscreen_ to false\n            this.isFullscreen_ = false;\n\n            // create logger\n            this.log = createLogger(this.id_);\n\n            // Hold our own reference to fullscreen api so it can be mocked in tests\n            this.fsApi_ = FullscreenApi;\n\n            // Tracks when a tech changes the poster\n            this.isPosterFromTech_ = false;\n\n            // Holds callback info that gets queued when playback rate is zero\n            // and a seek is happening\n            this.queuedCallbacks_ = [];\n\n            // Turn off API access because we're loading a new tech that might load asynchronously\n            this.isReady_ = false;\n\n            // Init state hasStarted_\n            this.hasStarted_ = false;\n\n            // Init state userActive_\n            this.userActive_ = false;\n\n            // Init debugEnabled_\n            this.debugEnabled_ = false;\n\n            // Init state audioOnlyMode_\n            this.audioOnlyMode_ = false;\n\n            // Init state audioPosterMode_\n            this.audioPosterMode_ = false;\n\n            // Init state audioOnlyCache_\n            this.audioOnlyCache_ = {\n                playerHeight: null,\n                hiddenChildren: []\n            };\n\n            // if the global option object was accidentally blown away by\n            // someone, bail early with an informative error\n            if (!this.options_ || !this.options_.techOrder || !this.options_.techOrder.length) {\n                throw new Error('No techOrder specified. Did you overwrite ' + 'videojs.options instead of just changing the ' + 'properties you want to override?');\n            }\n\n            // Store the original tag used to set options\n            this.tag = tag;\n\n            // Store the tag attributes used to restore html5 element\n            this.tagAttributes = tag && getAttributes(tag);\n\n            // Update current language\n            this.language(this.options_.language);\n\n            // Update Supported Languages\n            if (options.languages) {\n                // Normalise player option languages to lowercase\n                const languagesToLower = {};\n                Object.getOwnPropertyNames(options.languages).forEach(function (name) {\n                    languagesToLower[name.toLowerCase()] = options.languages[name];\n                });\n                this.languages_ = languagesToLower;\n            } else {\n                this.languages_ = Player.prototype.options_.languages;\n            }\n            this.resetCache_();\n\n            // Set poster\n            this.poster_ = options.poster || '';\n\n            // Set controls\n            this.controls_ = !!options.controls;\n\n            // Original tag settings stored in options\n            // now remove immediately so native controls don't flash.\n            // May be turned back on by HTML5 tech if nativeControlsForTouch is true\n            tag.controls = false;\n            tag.removeAttribute('controls');\n            this.changingSrc_ = false;\n            this.playCallbacks_ = [];\n            this.playTerminatedQueue_ = [];\n\n            // the attribute overrides the option\n            if (tag.hasAttribute('autoplay')) {\n                this.autoplay(true);\n            } else {\n                // otherwise use the setter to validate and\n                // set the correct value.\n                this.autoplay(this.options_.autoplay);\n            }\n\n            // check plugins\n            if (options.plugins) {\n                Object.keys(options.plugins).forEach(name => {\n                    if (typeof this[name] !== 'function') {\n                        throw new Error(`plugin \"${name}\" does not exist`);\n                    }\n                });\n            }\n\n            /*\n       * Store the internal state of scrubbing\n       *\n       * @private\n       * @return {Boolean} True if the user is scrubbing\n       */\n            this.scrubbing_ = false;\n            this.el_ = this.createEl();\n\n            // Make this an evented object and use `el_` as its event bus.\n            evented(this, {\n                eventBusKey: 'el_'\n            });\n\n            // listen to document and player fullscreenchange handlers so we receive those events\n            // before a user can receive them so we can update isFullscreen appropriately.\n            // make sure that we listen to fullscreenchange events before everything else to make sure that\n            // our isFullscreen method is updated properly for internal components as well as external.\n            if (this.fsApi_.requestFullscreen) {\n                on(document, this.fsApi_.fullscreenchange, this.boundDocumentFullscreenChange_);\n                this.on(this.fsApi_.fullscreenchange, this.boundDocumentFullscreenChange_);\n            }\n            if (this.fluid_) {\n                this.on(['playerreset', 'resize'], this.boundUpdateStyleEl_);\n            }\n            // We also want to pass the original player options to each component and plugin\n            // as well so they don't need to reach back into the player for options later.\n            // We also need to do another copy of this.options_ so we don't end up with\n            // an infinite loop.\n            const playerOptionsCopy = merge$2(this.options_);\n\n            // Load plugins\n            if (options.plugins) {\n                Object.keys(options.plugins).forEach(name => {\n                    this[name](options.plugins[name]);\n                });\n            }\n\n            // Enable debug mode to fire debugon event for all plugins.\n            if (options.debug) {\n                this.debug(true);\n            }\n            this.options_.playerOptions = playerOptionsCopy;\n            this.middleware_ = [];\n            this.playbackRates(options.playbackRates);\n            this.initChildren();\n\n            // Set isAudio based on whether or not an audio tag was used\n            this.isAudio(tag.nodeName.toLowerCase() === 'audio');\n\n            // Update controls className. Can't do this when the controls are initially\n            // set because the element doesn't exist yet.\n            if (this.controls()) {\n                this.addClass('vjs-controls-enabled');\n            } else {\n                this.addClass('vjs-controls-disabled');\n            }\n\n            // Set ARIA label and region role depending on player type\n            this.el_.setAttribute('role', 'region');\n            if (this.isAudio()) {\n                this.el_.setAttribute('aria-label', this.localize('Audio Player'));\n            } else {\n                this.el_.setAttribute('aria-label', this.localize('Video Player'));\n            }\n            if (this.isAudio()) {\n                this.addClass('vjs-audio');\n            }\n\n            // TODO: Make this smarter. Toggle user state between touching/mousing\n            // using events, since devices can have both touch and mouse events.\n            // TODO: Make this check be performed again when the window switches between monitors\n            // (See https://github.com/videojs/video.js/issues/5683)\n            if (TOUCH_ENABLED) {\n                this.addClass('vjs-touch-enabled');\n            }\n\n            // iOS Safari has broken hover handling\n            if (!IS_IOS) {\n                this.addClass('vjs-workinghover');\n            }\n\n            // Make player easily findable by ID\n            Player.players[this.id_] = this;\n\n            // Add a major version class to aid css in plugins\n            const majorVersion = version$5.split('.')[0];\n            this.addClass(`vjs-v${majorVersion}`);\n\n            // When the player is first initialized, trigger activity so components\n            // like the control bar show themselves if needed\n            this.userActive(true);\n            this.reportUserActivity();\n            this.one('play', e => this.listenForUserActivity_(e));\n            this.on('keydown', e => this.handleKeyDown(e));\n            this.on('languagechange', e => this.handleLanguagechange(e));\n            this.breakpoints(this.options_.breakpoints);\n            this.responsive(this.options_.responsive);\n\n            // Calling both the audio mode methods after the player is fully\n            // setup to be able to listen to the events triggered by them\n            this.on('ready', () => {\n                // Calling the audioPosterMode method first so that\n                // the audioOnlyMode can take precedence when both options are set to true\n                this.audioPosterMode(this.options_.audioPosterMode);\n                this.audioOnlyMode(this.options_.audioOnlyMode);\n            });\n        }\n\n        /**\n         * Destroys the video player and does any necessary cleanup.\n         *\n         * This is especially helpful if you are dynamically adding and removing videos\n         * to/from the DOM.\n         *\n         * @fires Player#dispose\n         */\n        dispose() {\n            /**\n             * Called when the player is being disposed of.\n             *\n             * @event Player#dispose\n             * @type {Event}\n             */\n            this.trigger('dispose');\n            // prevent dispose from being called twice\n            this.off('dispose');\n\n            // Make sure all player-specific document listeners are unbound. This is\n            off(document, this.fsApi_.fullscreenchange, this.boundDocumentFullscreenChange_);\n            off(document, 'keydown', this.boundFullWindowOnEscKey_);\n            if (this.styleEl_ && this.styleEl_.parentNode) {\n                this.styleEl_.parentNode.removeChild(this.styleEl_);\n                this.styleEl_ = null;\n            }\n\n            // Kill reference to this player\n            Player.players[this.id_] = null;\n            if (this.tag && this.tag.player) {\n                this.tag.player = null;\n            }\n            if (this.el_ && this.el_.player) {\n                this.el_.player = null;\n            }\n            if (this.tech_) {\n                this.tech_.dispose();\n                this.isPosterFromTech_ = false;\n                this.poster_ = '';\n            }\n            if (this.playerElIngest_) {\n                this.playerElIngest_ = null;\n            }\n            if (this.tag) {\n                this.tag = null;\n            }\n            clearCacheForPlayer(this);\n\n            // remove all event handlers for track lists\n            // all tracks and track listeners are removed on\n            // tech dispose\n            ALL.names.forEach(name => {\n                const props = ALL[name];\n                const list = this[props.getterName]();\n\n                // if it is not a native list\n                // we have to manually remove event listeners\n                if (list && list.off) {\n                    list.off();\n                }\n            });\n\n            // the actual .el_ is removed here, or replaced if\n            super.dispose({\n                restoreEl: this.options_.restoreEl\n            });\n        }\n\n        /**\n         * Create the `Player`'s DOM element.\n         *\n         * @return {Element}\n         *         The DOM element that gets created.\n         */\n        createEl() {\n            let tag = this.tag;\n            let el;\n            let playerElIngest = this.playerElIngest_ = tag.parentNode && tag.parentNode.hasAttribute && tag.parentNode.hasAttribute('data-vjs-player');\n            const divEmbed = this.tag.tagName.toLowerCase() === 'video-js';\n            if (playerElIngest) {\n                el = this.el_ = tag.parentNode;\n            } else if (!divEmbed) {\n                el = this.el_ = super.createEl('div');\n            }\n\n            // Copy over all the attributes from the tag, including ID and class\n            // ID will now reference player box, not the video tag\n            const attrs = getAttributes(tag);\n            if (divEmbed) {\n                el = this.el_ = tag;\n                tag = this.tag = document.createElement('video');\n                while (el.children.length) {\n                    tag.appendChild(el.firstChild);\n                }\n                if (!hasClass(el, 'video-js')) {\n                    addClass(el, 'video-js');\n                }\n                el.appendChild(tag);\n                playerElIngest = this.playerElIngest_ = el;\n                // move properties over from our custom `video-js` element\n                // to our new `video` element. This will move things like\n                // `src` or `controls` that were set via js before the player\n                // was initialized.\n                Object.keys(el).forEach(k => {\n                    try {\n                        tag[k] = el[k];\n                    } catch (e) {\n                        // we got a a property like outerHTML which we can't actually copy, ignore it\n                    }\n                });\n            }\n\n            // set tabindex to -1 to remove the video element from the focus order\n            tag.setAttribute('tabindex', '-1');\n            attrs.tabindex = '-1';\n\n            // Workaround for #4583 on Chrome (on Windows) with JAWS.\n            // See https://github.com/FreedomScientific/VFO-standards-support/issues/78\n            // Note that we can't detect if JAWS is being used, but this ARIA attribute\n            // doesn't change behavior of Chrome if JAWS is not being used\n            if (IS_CHROME && IS_WINDOWS) {\n                tag.setAttribute('role', 'application');\n                attrs.role = 'application';\n            }\n\n            // Remove width/height attrs from tag so CSS can make it 100% width/height\n            tag.removeAttribute('width');\n            tag.removeAttribute('height');\n            if ('width' in attrs) {\n                delete attrs.width;\n            }\n            if ('height' in attrs) {\n                delete attrs.height;\n            }\n            Object.getOwnPropertyNames(attrs).forEach(function (attr) {\n                // don't copy over the class attribute to the player element when we're in a div embed\n                // the class is already set up properly in the divEmbed case\n                // and we want to make sure that the `video-js` class doesn't get lost\n                if (!(divEmbed && attr === 'class')) {\n                    el.setAttribute(attr, attrs[attr]);\n                }\n                if (divEmbed) {\n                    tag.setAttribute(attr, attrs[attr]);\n                }\n            });\n\n            // Update tag id/class for use as HTML5 playback tech\n            // Might think we should do this after embedding in container so .vjs-tech class\n            // doesn't flash 100% width/height, but class only applies with .video-js parent\n            tag.playerId = tag.id;\n            tag.id += '_html5_api';\n            tag.className = 'vjs-tech';\n\n            // Make player findable on elements\n            tag.player = el.player = this;\n            // Default state of video is paused\n            this.addClass('vjs-paused');\n\n            // Add a style element in the player that we'll use to set the width/height\n            // of the player in a way that's still overridable by CSS, just like the\n            // video element\n            if (window.VIDEOJS_NO_DYNAMIC_STYLE !== true) {\n                this.styleEl_ = createStyleElement('vjs-styles-dimensions');\n                const defaultsStyleEl = $('.vjs-styles-defaults');\n                const head = $('head');\n                head.insertBefore(this.styleEl_, defaultsStyleEl ? defaultsStyleEl.nextSibling : head.firstChild);\n            }\n            this.fill_ = false;\n            this.fluid_ = false;\n\n            // Pass in the width/height/aspectRatio options which will update the style el\n            this.width(this.options_.width);\n            this.height(this.options_.height);\n            this.fill(this.options_.fill);\n            this.fluid(this.options_.fluid);\n            this.aspectRatio(this.options_.aspectRatio);\n            // support both crossOrigin and crossorigin to reduce confusion and issues around the name\n            this.crossOrigin(this.options_.crossOrigin || this.options_.crossorigin);\n\n            // Hide any links within the video/audio tag,\n            // because IE doesn't hide them completely from screen readers.\n            const links = tag.getElementsByTagName('a');\n            for (let i = 0; i < links.length; i++) {\n                const linkEl = links.item(i);\n                addClass(linkEl, 'vjs-hidden');\n                linkEl.setAttribute('hidden', 'hidden');\n            }\n\n            // insertElFirst seems to cause the networkState to flicker from 3 to 2, so\n            // keep track of the original for later so we can know if the source originally failed\n            tag.initNetworkState_ = tag.networkState;\n\n            // Wrap video tag in div (el/box) container\n            if (tag.parentNode && !playerElIngest) {\n                tag.parentNode.insertBefore(el, tag);\n            }\n\n            // insert the tag as the first child of the player element\n            // then manually add it to the children array so that this.addChild\n            // will work properly for other components\n            //\n            // Breaks iPhone, fixed in HTML5 setup.\n            prependTo(tag, el);\n            this.children_.unshift(tag);\n\n            // Set lang attr on player to ensure CSS :lang() in consistent with player\n            // if it's been set to something different to the doc\n            this.el_.setAttribute('lang', this.language_);\n            this.el_.setAttribute('translate', 'no');\n            this.el_ = el;\n            return el;\n        }\n\n        /**\n         * Get or set the `Player`'s crossOrigin option. For the HTML5 player, this\n         * sets the `crossOrigin` property on the `<video>` tag to control the CORS\n         * behavior.\n         *\n         * @see [Video Element Attributes]{@link https://developer.mozilla.org/en-US/docs/Web/HTML/Element/video#attr-crossorigin}\n         *\n         * @param {string|null} [value]\n         *        The value to set the `Player`'s crossOrigin to. If an argument is\n         *        given, must be one of `'anonymous'` or `'use-credentials'`, or 'null'.\n         *\n         * @return {string|null|undefined}\n         *         - The current crossOrigin value of the `Player` when getting.\n         *         - undefined when setting\n         */\n        crossOrigin(value) {\n            // `null` can be set to unset a value\n            if (typeof value === 'undefined') {\n                return this.techGet_('crossOrigin');\n            }\n            if (value !== null && value !== 'anonymous' && value !== 'use-credentials') {\n                log$1.warn(`crossOrigin must be null,  \"anonymous\" or \"use-credentials\", given \"${value}\"`);\n                return;\n            }\n            this.techCall_('setCrossOrigin', value);\n            if (this.posterImage) {\n                this.posterImage.crossOrigin(value);\n            }\n            return;\n        }\n\n        /**\n         * A getter/setter for the `Player`'s width. Returns the player's configured value.\n         * To get the current width use `currentWidth()`.\n         *\n         * @param {number} [value]\n         *        The value to set the `Player`'s width to.\n         *\n         * @return {number}\n         *         The current width of the `Player` when getting.\n         */\n        width(value) {\n            return this.dimension('width', value);\n        }\n\n        /**\n         * A getter/setter for the `Player`'s height. Returns the player's configured value.\n         * To get the current height use `currentheight()`.\n         *\n         * @param {number} [value]\n         *        The value to set the `Player`'s height to.\n         *\n         * @return {number}\n         *         The current height of the `Player` when getting.\n         */\n        height(value) {\n            return this.dimension('height', value);\n        }\n\n        /**\n         * A getter/setter for the `Player`'s width & height.\n         *\n         * @param {string} dimension\n         *        This string can be:\n         *        - 'width'\n         *        - 'height'\n         *\n         * @param {number} [value]\n         *        Value for dimension specified in the first argument.\n         *\n         * @return {number}\n         *         The dimension arguments value when getting (width/height).\n         */\n        dimension(dimension, value) {\n            const privDimension = dimension + '_';\n            if (value === undefined) {\n                return this[privDimension] || 0;\n            }\n            if (value === '' || value === 'auto') {\n                // If an empty string is given, reset the dimension to be automatic\n                this[privDimension] = undefined;\n                this.updateStyleEl_();\n                return;\n            }\n            const parsedVal = parseFloat(value);\n            if (isNaN(parsedVal)) {\n                log$1.error(`Improper value \"${value}\" supplied for for ${dimension}`);\n                return;\n            }\n            this[privDimension] = parsedVal;\n            this.updateStyleEl_();\n        }\n\n        /**\n         * A getter/setter/toggler for the vjs-fluid `className` on the `Player`.\n         *\n         * Turning this on will turn off fill mode.\n         *\n         * @param {boolean} [bool]\n         *        - A value of true adds the class.\n         *        - A value of false removes the class.\n         *        - No value will be a getter.\n         *\n         * @return {boolean|undefined}\n         *         - The value of fluid when getting.\n         *         - `undefined` when setting.\n         */\n        fluid(bool) {\n            if (bool === undefined) {\n                return !!this.fluid_;\n            }\n            this.fluid_ = !!bool;\n            if (isEvented(this)) {\n                this.off(['playerreset', 'resize'], this.boundUpdateStyleEl_);\n            }\n            if (bool) {\n                this.addClass('vjs-fluid');\n                this.fill(false);\n                addEventedCallback(this, () => {\n                    this.on(['playerreset', 'resize'], this.boundUpdateStyleEl_);\n                });\n            } else {\n                this.removeClass('vjs-fluid');\n            }\n            this.updateStyleEl_();\n        }\n\n        /**\n         * A getter/setter/toggler for the vjs-fill `className` on the `Player`.\n         *\n         * Turning this on will turn off fluid mode.\n         *\n         * @param {boolean} [bool]\n         *        - A value of true adds the class.\n         *        - A value of false removes the class.\n         *        - No value will be a getter.\n         *\n         * @return {boolean|undefined}\n         *         - The value of fluid when getting.\n         *         - `undefined` when setting.\n         */\n        fill(bool) {\n            if (bool === undefined) {\n                return !!this.fill_;\n            }\n            this.fill_ = !!bool;\n            if (bool) {\n                this.addClass('vjs-fill');\n                this.fluid(false);\n            } else {\n                this.removeClass('vjs-fill');\n            }\n        }\n\n        /**\n         * Get/Set the aspect ratio\n         *\n         * @param {string} [ratio]\n         *        Aspect ratio for player\n         *\n         * @return {string|undefined}\n         *         returns the current aspect ratio when getting\n         */\n\n        /**\n         * A getter/setter for the `Player`'s aspect ratio.\n         *\n         * @param {string} [ratio]\n         *        The value to set the `Player`'s aspect ratio to.\n         *\n         * @return {string|undefined}\n         *         - The current aspect ratio of the `Player` when getting.\n         *         - undefined when setting\n         */\n        aspectRatio(ratio) {\n            if (ratio === undefined) {\n                return this.aspectRatio_;\n            }\n\n            // Check for width:height format\n            if (!/^\\d+\\:\\d+$/.test(ratio)) {\n                throw new Error('Improper value supplied for aspect ratio. The format should be width:height, for example 16:9.');\n            }\n            this.aspectRatio_ = ratio;\n\n            // We're assuming if you set an aspect ratio you want fluid mode,\n            // because in fixed mode you could calculate width and height yourself.\n            this.fluid(true);\n            this.updateStyleEl_();\n        }\n\n        /**\n         * Update styles of the `Player` element (height, width and aspect ratio).\n         *\n         * @private\n         * @listens Tech#loadedmetadata\n         */\n        updateStyleEl_() {\n            if (window.VIDEOJS_NO_DYNAMIC_STYLE === true) {\n                const width = typeof this.width_ === 'number' ? this.width_ : this.options_.width;\n                const height = typeof this.height_ === 'number' ? this.height_ : this.options_.height;\n                const techEl = this.tech_ && this.tech_.el();\n                if (techEl) {\n                    if (width >= 0) {\n                        techEl.width = width;\n                    }\n                    if (height >= 0) {\n                        techEl.height = height;\n                    }\n                }\n                return;\n            }\n            let width;\n            let height;\n            let aspectRatio;\n            let idClass;\n\n            // The aspect ratio is either used directly or to calculate width and height.\n            if (this.aspectRatio_ !== undefined && this.aspectRatio_ !== 'auto') {\n                // Use any aspectRatio that's been specifically set\n                aspectRatio = this.aspectRatio_;\n            } else if (this.videoWidth() > 0) {\n                // Otherwise try to get the aspect ratio from the video metadata\n                aspectRatio = this.videoWidth() + ':' + this.videoHeight();\n            } else {\n                // Or use a default. The video element's is 2:1, but 16:9 is more common.\n                aspectRatio = '16:9';\n            }\n\n            // Get the ratio as a decimal we can use to calculate dimensions\n            const ratioParts = aspectRatio.split(':');\n            const ratioMultiplier = ratioParts[1] / ratioParts[0];\n            if (this.width_ !== undefined) {\n                // Use any width that's been specifically set\n                width = this.width_;\n            } else if (this.height_ !== undefined) {\n                // Or calculate the width from the aspect ratio if a height has been set\n                width = this.height_ / ratioMultiplier;\n            } else {\n                // Or use the video's metadata, or use the video el's default of 300\n                width = this.videoWidth() || 300;\n            }\n            if (this.height_ !== undefined) {\n                // Use any height that's been specifically set\n                height = this.height_;\n            } else {\n                // Otherwise calculate the height from the ratio and the width\n                height = width * ratioMultiplier;\n            }\n\n            // Ensure the CSS class is valid by starting with an alpha character\n            if (/^[^a-zA-Z]/.test(this.id())) {\n                idClass = 'dimensions-' + this.id();\n            } else {\n                idClass = this.id() + '-dimensions';\n            }\n\n            // Ensure the right class is still on the player for the style element\n            this.addClass(idClass);\n            setTextContent(this.styleEl_, `\n      .${idClass} {\n        width: ${width}px;\n        height: ${height}px;\n      }\n\n      .${idClass}.vjs-fluid:not(.vjs-audio-only-mode) {\n        padding-top: ${ratioMultiplier * 100}%;\n      }\n    `);\n        }\n\n        /**\n         * Load/Create an instance of playback {@link Tech} including element\n         * and API methods. Then append the `Tech` element in `Player` as a child.\n         *\n         * @param {string} techName\n         *        name of the playback technology\n         *\n         * @param {string} source\n         *        video source\n         *\n         * @private\n         */\n        loadTech_(techName, source) {\n            // Pause and remove current playback technology\n            if (this.tech_) {\n                this.unloadTech_();\n            }\n            const titleTechName = toTitleCase$1(techName);\n            const camelTechName = techName.charAt(0).toLowerCase() + techName.slice(1);\n\n            // get rid of the HTML5 video tag as soon as we are using another tech\n            if (titleTechName !== 'Html5' && this.tag) {\n                Tech.getTech('Html5').disposeMediaElement(this.tag);\n                this.tag.player = null;\n                this.tag = null;\n            }\n            this.techName_ = titleTechName;\n\n            // Turn off API access because we're loading a new tech that might load asynchronously\n            this.isReady_ = false;\n            let autoplay = this.autoplay();\n\n            // if autoplay is a string (or `true` with normalizeAutoplay: true) we pass false to the tech\n            // because the player is going to handle autoplay on `loadstart`\n            if (typeof this.autoplay() === 'string' || this.autoplay() === true && this.options_.normalizeAutoplay) {\n                autoplay = false;\n            }\n\n            // Grab tech-specific options from player options and add source and parent element to use.\n            const techOptions = {\n                source,\n                autoplay,\n                'nativeControlsForTouch': this.options_.nativeControlsForTouch,\n                'playerId': this.id(),\n                'techId': `${this.id()}_${camelTechName}_api`,\n                'playsinline': this.options_.playsinline,\n                'preload': this.options_.preload,\n                'loop': this.options_.loop,\n                'disablePictureInPicture': this.options_.disablePictureInPicture,\n                'muted': this.options_.muted,\n                'poster': this.poster(),\n                'language': this.language(),\n                'playerElIngest': this.playerElIngest_ || false,\n                'vtt.js': this.options_['vtt.js'],\n                'canOverridePoster': !!this.options_.techCanOverridePoster,\n                'enableSourceset': this.options_.enableSourceset\n            };\n            ALL.names.forEach(name => {\n                const props = ALL[name];\n                techOptions[props.getterName] = this[props.privateName];\n            });\n            Object.assign(techOptions, this.options_[titleTechName]);\n            Object.assign(techOptions, this.options_[camelTechName]);\n            Object.assign(techOptions, this.options_[techName.toLowerCase()]);\n            if (this.tag) {\n                techOptions.tag = this.tag;\n            }\n            if (source && source.src === this.cache_.src && this.cache_.currentTime > 0) {\n                techOptions.startTime = this.cache_.currentTime;\n            }\n\n            // Initialize tech instance\n            const TechClass = Tech.getTech(techName);\n            if (!TechClass) {\n                throw new Error(`No Tech named '${titleTechName}' exists! '${titleTechName}' should be registered using videojs.registerTech()'`);\n            }\n            this.tech_ = new TechClass(techOptions);\n\n            // player.triggerReady is always async, so don't need this to be async\n            this.tech_.ready(bind_(this, this.handleTechReady_), true);\n            textTrackConverter.jsonToTextTracks(this.textTracksJson_ || [], this.tech_);\n\n            // Listen to all HTML5-defined events and trigger them on the player\n            TECH_EVENTS_RETRIGGER.forEach(event => {\n                this.on(this.tech_, event, e => this[`handleTech${toTitleCase$1(event)}_`](e));\n            });\n            Object.keys(TECH_EVENTS_QUEUE).forEach(event => {\n                this.on(this.tech_, event, eventObj => {\n                    if (this.tech_.playbackRate() === 0 && this.tech_.seeking()) {\n                        this.queuedCallbacks_.push({\n                            callback: this[`handleTech${TECH_EVENTS_QUEUE[event]}_`].bind(this),\n                            event: eventObj\n                        });\n                        return;\n                    }\n                    this[`handleTech${TECH_EVENTS_QUEUE[event]}_`](eventObj);\n                });\n            });\n            this.on(this.tech_, 'loadstart', e => this.handleTechLoadStart_(e));\n            this.on(this.tech_, 'sourceset', e => this.handleTechSourceset_(e));\n            this.on(this.tech_, 'waiting', e => this.handleTechWaiting_(e));\n            this.on(this.tech_, 'ended', e => this.handleTechEnded_(e));\n            this.on(this.tech_, 'seeking', e => this.handleTechSeeking_(e));\n            this.on(this.tech_, 'play', e => this.handleTechPlay_(e));\n            this.on(this.tech_, 'pause', e => this.handleTechPause_(e));\n            this.on(this.tech_, 'durationchange', e => this.handleTechDurationChange_(e));\n            this.on(this.tech_, 'fullscreenchange', (e, data) => this.handleTechFullscreenChange_(e, data));\n            this.on(this.tech_, 'fullscreenerror', (e, err) => this.handleTechFullscreenError_(e, err));\n            this.on(this.tech_, 'enterpictureinpicture', e => this.handleTechEnterPictureInPicture_(e));\n            this.on(this.tech_, 'leavepictureinpicture', e => this.handleTechLeavePictureInPicture_(e));\n            this.on(this.tech_, 'error', e => this.handleTechError_(e));\n            this.on(this.tech_, 'posterchange', e => this.handleTechPosterChange_(e));\n            this.on(this.tech_, 'textdata', e => this.handleTechTextData_(e));\n            this.on(this.tech_, 'ratechange', e => this.handleTechRateChange_(e));\n            this.on(this.tech_, 'loadedmetadata', this.boundUpdateStyleEl_);\n            this.usingNativeControls(this.techGet_('controls'));\n            if (this.controls() && !this.usingNativeControls()) {\n                this.addTechControlsListeners_();\n            }\n\n            // Add the tech element in the DOM if it was not already there\n            // Make sure to not insert the original video element if using Html5\n            if (this.tech_.el().parentNode !== this.el() && (titleTechName !== 'Html5' || !this.tag)) {\n                prependTo(this.tech_.el(), this.el());\n            }\n\n            // Get rid of the original video tag reference after the first tech is loaded\n            if (this.tag) {\n                this.tag.player = null;\n                this.tag = null;\n            }\n        }\n\n        /**\n         * Unload and dispose of the current playback {@link Tech}.\n         *\n         * @private\n         */\n        unloadTech_() {\n            // Save the current text tracks so that we can reuse the same text tracks with the next tech\n            ALL.names.forEach(name => {\n                const props = ALL[name];\n                this[props.privateName] = this[props.getterName]();\n            });\n            this.textTracksJson_ = textTrackConverter.textTracksToJson(this.tech_);\n            this.isReady_ = false;\n            this.tech_.dispose();\n            this.tech_ = false;\n            if (this.isPosterFromTech_) {\n                this.poster_ = '';\n                this.trigger('posterchange');\n            }\n            this.isPosterFromTech_ = false;\n        }\n\n        /**\n         * Return a reference to the current {@link Tech}.\n         * It will print a warning by default about the danger of using the tech directly\n         * but any argument that is passed in will silence the warning.\n         *\n         * @param {*} [safety]\n         *        Anything passed in to silence the warning\n         *\n         * @return {Tech}\n         *         The Tech\n         */\n        tech(safety) {\n            if (safety === undefined) {\n                log$1.warn('Using the tech directly can be dangerous. I hope you know what you\\'re doing.\\n' + 'See https://github.com/videojs/video.js/issues/2617 for more info.\\n');\n            }\n            return this.tech_;\n        }\n\n        /**\n         * Set up click and touch listeners for the playback element\n         *\n         * - On desktops: a click on the video itself will toggle playback\n         * - On mobile devices: a click on the video toggles controls\n         *   which is done by toggling the user state between active and\n         *   inactive\n         * - A tap can signal that a user has become active or has become inactive\n         *   e.g. a quick tap on an iPhone movie should reveal the controls. Another\n         *   quick tap should hide them again (signaling the user is in an inactive\n         *   viewing state)\n         * - In addition to this, we still want the user to be considered inactive after\n         *   a few seconds of inactivity.\n         *\n         * > Note: the only part of iOS interaction we can't mimic with this setup\n         * is a touch and hold on the video element counting as activity in order to\n         * keep the controls showing, but that shouldn't be an issue. A touch and hold\n         * on any controls will still keep the user active\n         *\n         * @private\n         */\n        addTechControlsListeners_() {\n            // Make sure to remove all the previous listeners in case we are called multiple times.\n            this.removeTechControlsListeners_();\n            this.on(this.tech_, 'click', this.boundHandleTechClick_);\n            this.on(this.tech_, 'dblclick', this.boundHandleTechDoubleClick_);\n\n            // If the controls were hidden we don't want that to change without a tap event\n            // so we'll check if the controls were already showing before reporting user\n            // activity\n            this.on(this.tech_, 'touchstart', this.boundHandleTechTouchStart_);\n            this.on(this.tech_, 'touchmove', this.boundHandleTechTouchMove_);\n            this.on(this.tech_, 'touchend', this.boundHandleTechTouchEnd_);\n\n            // The tap listener needs to come after the touchend listener because the tap\n            // listener cancels out any reportedUserActivity when setting userActive(false)\n            this.on(this.tech_, 'tap', this.boundHandleTechTap_);\n        }\n\n        /**\n         * Remove the listeners used for click and tap controls. This is needed for\n         * toggling to controls disabled, where a tap/touch should do nothing.\n         *\n         * @private\n         */\n        removeTechControlsListeners_() {\n            // We don't want to just use `this.off()` because there might be other needed\n            // listeners added by techs that extend this.\n            this.off(this.tech_, 'tap', this.boundHandleTechTap_);\n            this.off(this.tech_, 'touchstart', this.boundHandleTechTouchStart_);\n            this.off(this.tech_, 'touchmove', this.boundHandleTechTouchMove_);\n            this.off(this.tech_, 'touchend', this.boundHandleTechTouchEnd_);\n            this.off(this.tech_, 'click', this.boundHandleTechClick_);\n            this.off(this.tech_, 'dblclick', this.boundHandleTechDoubleClick_);\n        }\n\n        /**\n         * Player waits for the tech to be ready\n         *\n         * @private\n         */\n        handleTechReady_() {\n            this.triggerReady();\n\n            // Keep the same volume as before\n            if (this.cache_.volume) {\n                this.techCall_('setVolume', this.cache_.volume);\n            }\n\n            // Look if the tech found a higher resolution poster while loading\n            this.handleTechPosterChange_();\n\n            // Update the duration if available\n            this.handleTechDurationChange_();\n        }\n\n        /**\n         * Retrigger the `loadstart` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#loadstart\n         * @listens Tech#loadstart\n         * @private\n         */\n        handleTechLoadStart_() {\n            // TODO: Update to use `emptied` event instead. See #1277.\n\n            this.removeClass('vjs-ended', 'vjs-seeking');\n\n            // reset the error state\n            this.error(null);\n\n            // Update the duration\n            this.handleTechDurationChange_();\n            if (!this.paused()) {\n                /**\n                 * Fired when the user agent begins looking for media data\n                 *\n                 * @event Player#loadstart\n                 * @type {Event}\n                 */\n                this.trigger('loadstart');\n            } else {\n                // reset the hasStarted state\n                this.hasStarted(false);\n                this.trigger('loadstart');\n            }\n\n            // autoplay happens after loadstart for the browser,\n            // so we mimic that behavior\n            this.manualAutoplay_(this.autoplay() === true && this.options_.normalizeAutoplay ? 'play' : this.autoplay());\n        }\n\n        /**\n         * Handle autoplay string values, rather than the typical boolean\n         * values that should be handled by the tech. Note that this is not\n         * part of any specification. Valid values and what they do can be\n         * found on the autoplay getter at Player#autoplay()\n         */\n        manualAutoplay_(type) {\n            if (!this.tech_ || typeof type !== 'string') {\n                return;\n            }\n\n            // Save original muted() value, set muted to true, and attempt to play().\n            // On promise rejection, restore muted from saved value\n            const resolveMuted = () => {\n                const previouslyMuted = this.muted();\n                this.muted(true);\n                const restoreMuted = () => {\n                    this.muted(previouslyMuted);\n                };\n\n                // restore muted on play terminatation\n                this.playTerminatedQueue_.push(restoreMuted);\n                const mutedPromise = this.play();\n                if (!isPromise(mutedPromise)) {\n                    return;\n                }\n                return mutedPromise.catch(err => {\n                    restoreMuted();\n                    throw new Error(`Rejection at manualAutoplay. Restoring muted value. ${err ? err : ''}`);\n                });\n            };\n            let promise;\n\n            // if muted defaults to true\n            // the only thing we can do is call play\n            if (type === 'any' && !this.muted()) {\n                promise = this.play();\n                if (isPromise(promise)) {\n                    promise = promise.catch(resolveMuted);\n                }\n            } else if (type === 'muted' && !this.muted()) {\n                promise = resolveMuted();\n            } else {\n                promise = this.play();\n            }\n            if (!isPromise(promise)) {\n                return;\n            }\n            return promise.then(() => {\n                this.trigger({\n                    type: 'autoplay-success',\n                    autoplay: type\n                });\n            }).catch(() => {\n                this.trigger({\n                    type: 'autoplay-failure',\n                    autoplay: type\n                });\n            });\n        }\n\n        /**\n         * Update the internal source caches so that we return the correct source from\n         * `src()`, `currentSource()`, and `currentSources()`.\n         *\n         * > Note: `currentSources` will not be updated if the source that is passed in exists\n         *         in the current `currentSources` cache.\n         *\n         *\n         * @param {Tech~SourceObject} srcObj\n         *        A string or object source to update our caches to.\n         */\n        updateSourceCaches_(srcObj = '') {\n            let src = srcObj;\n            let type = '';\n            if (typeof src !== 'string') {\n                src = srcObj.src;\n                type = srcObj.type;\n            }\n\n            // make sure all the caches are set to default values\n            // to prevent null checking\n            this.cache_.source = this.cache_.source || {};\n            this.cache_.sources = this.cache_.sources || [];\n\n            // try to get the type of the src that was passed in\n            if (src && !type) {\n                type = findMimetype(this, src);\n            }\n\n            // update `currentSource` cache always\n            this.cache_.source = merge$2({}, srcObj, {\n                src,\n                type\n            });\n            const matchingSources = this.cache_.sources.filter(s => s.src && s.src === src);\n            const sourceElSources = [];\n            const sourceEls = this.$$('source');\n            const matchingSourceEls = [];\n            for (let i = 0; i < sourceEls.length; i++) {\n                const sourceObj = getAttributes(sourceEls[i]);\n                sourceElSources.push(sourceObj);\n                if (sourceObj.src && sourceObj.src === src) {\n                    matchingSourceEls.push(sourceObj.src);\n                }\n            }\n\n            // if we have matching source els but not matching sources\n            // the current source cache is not up to date\n            if (matchingSourceEls.length && !matchingSources.length) {\n                this.cache_.sources = sourceElSources;\n                // if we don't have matching source or source els set the\n                // sources cache to the `currentSource` cache\n            } else if (!matchingSources.length) {\n                this.cache_.sources = [this.cache_.source];\n            }\n\n            // update the tech `src` cache\n            this.cache_.src = src;\n        }\n\n        /**\n         * *EXPERIMENTAL* Fired when the source is set or changed on the {@link Tech}\n         * causing the media element to reload.\n         *\n         * It will fire for the initial source and each subsequent source.\n         * This event is a custom event from Video.js and is triggered by the {@link Tech}.\n         *\n         * The event object for this event contains a `src` property that will contain the source\n         * that was available when the event was triggered. This is generally only necessary if Video.js\n         * is switching techs while the source was being changed.\n         *\n         * It is also fired when `load` is called on the player (or media element)\n         * because the {@link https://html.spec.whatwg.org/multipage/media.html#dom-media-load|specification for `load`}\n         * says that the resource selection algorithm needs to be aborted and restarted.\n         * In this case, it is very likely that the `src` property will be set to the\n         * empty string `\"\"` to indicate we do not know what the source will be but\n         * that it is changing.\n         *\n         * *This event is currently still experimental and may change in minor releases.*\n         * __To use this, pass `enableSourceset` option to the player.__\n         *\n         * @event Player#sourceset\n         * @type {Event}\n         * @prop {string} src\n         *                The source url available when the `sourceset` was triggered.\n         *                It will be an empty string if we cannot know what the source is\n         *                but know that the source will change.\n         */\n        /**\n         * Retrigger the `sourceset` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#sourceset\n         * @listens Tech#sourceset\n         * @private\n         */\n        handleTechSourceset_(event) {\n            // only update the source cache when the source\n            // was not updated using the player api\n            if (!this.changingSrc_) {\n                let updateSourceCaches = src => this.updateSourceCaches_(src);\n                const playerSrc = this.currentSource().src;\n                const eventSrc = event.src;\n\n                // if we have a playerSrc that is not a blob, and a tech src that is a blob\n                if (playerSrc && !/^blob:/.test(playerSrc) && /^blob:/.test(eventSrc)) {\n                    // if both the tech source and the player source were updated we assume\n                    // something like @videojs/http-streaming did the sourceset and skip updating the source cache.\n                    if (!this.lastSource_ || this.lastSource_.tech !== eventSrc && this.lastSource_.player !== playerSrc) {\n                        updateSourceCaches = () => {};\n                    }\n                }\n\n                // update the source to the initial source right away\n                // in some cases this will be empty string\n                updateSourceCaches(eventSrc);\n\n                // if the `sourceset` `src` was an empty string\n                // wait for a `loadstart` to update the cache to `currentSrc`.\n                // If a sourceset happens before a `loadstart`, we reset the state\n                if (!event.src) {\n                    this.tech_.any(['sourceset', 'loadstart'], e => {\n                        // if a sourceset happens before a `loadstart` there\n                        // is nothing to do as this `handleTechSourceset_`\n                        // will be called again and this will be handled there.\n                        if (e.type === 'sourceset') {\n                            return;\n                        }\n                        const techSrc = this.techGet('currentSrc');\n                        this.lastSource_.tech = techSrc;\n                        this.updateSourceCaches_(techSrc);\n                    });\n                }\n            }\n            this.lastSource_ = {\n                player: this.currentSource().src,\n                tech: event.src\n            };\n            this.trigger({\n                src: event.src,\n                type: 'sourceset'\n            });\n        }\n\n        /**\n         * Add/remove the vjs-has-started class\n         *\n         *\n         * @param {boolean} request\n         *        - true: adds the class\n         *        - false: remove the class\n         *\n         * @return {boolean}\n         *         the boolean value of hasStarted_\n         */\n        hasStarted(request) {\n            if (request === undefined) {\n                // act as getter, if we have no request to change\n                return this.hasStarted_;\n            }\n            if (request === this.hasStarted_) {\n                return;\n            }\n            this.hasStarted_ = request;\n            if (this.hasStarted_) {\n                this.addClass('vjs-has-started');\n            } else {\n                this.removeClass('vjs-has-started');\n            }\n        }\n\n        /**\n         * Fired whenever the media begins or resumes playback\n         *\n         * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-play}\n         * @fires Player#play\n         * @listens Tech#play\n         * @private\n         */\n        handleTechPlay_() {\n            this.removeClass('vjs-ended', 'vjs-paused');\n            this.addClass('vjs-playing');\n\n            // hide the poster when the user hits play\n            this.hasStarted(true);\n            /**\n             * Triggered whenever an {@link Tech#play} event happens. Indicates that\n             * playback has started or resumed.\n             *\n             * @event Player#play\n             * @type {Event}\n             */\n            this.trigger('play');\n        }\n\n        /**\n         * Retrigger the `ratechange` event that was triggered by the {@link Tech}.\n         *\n         * If there were any events queued while the playback rate was zero, fire\n         * those events now.\n         *\n         * @private\n         * @method Player#handleTechRateChange_\n         * @fires Player#ratechange\n         * @listens Tech#ratechange\n         */\n        handleTechRateChange_() {\n            if (this.tech_.playbackRate() > 0 && this.cache_.lastPlaybackRate === 0) {\n                this.queuedCallbacks_.forEach(queued => queued.callback(queued.event));\n                this.queuedCallbacks_ = [];\n            }\n            this.cache_.lastPlaybackRate = this.tech_.playbackRate();\n            /**\n             * Fires when the playing speed of the audio/video is changed\n             *\n             * @event Player#ratechange\n             * @type {event}\n             */\n            this.trigger('ratechange');\n        }\n\n        /**\n         * Retrigger the `waiting` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#waiting\n         * @listens Tech#waiting\n         * @private\n         */\n        handleTechWaiting_() {\n            this.addClass('vjs-waiting');\n            /**\n             * A readyState change on the DOM element has caused playback to stop.\n             *\n             * @event Player#waiting\n             * @type {Event}\n             */\n            this.trigger('waiting');\n\n            // Browsers may emit a timeupdate event after a waiting event. In order to prevent\n            // premature removal of the waiting class, wait for the time to change.\n            const timeWhenWaiting = this.currentTime();\n            const timeUpdateListener = () => {\n                if (timeWhenWaiting !== this.currentTime()) {\n                    this.removeClass('vjs-waiting');\n                    this.off('timeupdate', timeUpdateListener);\n                }\n            };\n            this.on('timeupdate', timeUpdateListener);\n        }\n\n        /**\n         * Retrigger the `canplay` event that was triggered by the {@link Tech}.\n         * > Note: This is not consistent between browsers. See #1351\n         *\n         * @fires Player#canplay\n         * @listens Tech#canplay\n         * @private\n         */\n        handleTechCanPlay_() {\n            this.removeClass('vjs-waiting');\n            /**\n             * The media has a readyState of HAVE_FUTURE_DATA or greater.\n             *\n             * @event Player#canplay\n             * @type {Event}\n             */\n            this.trigger('canplay');\n        }\n\n        /**\n         * Retrigger the `canplaythrough` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#canplaythrough\n         * @listens Tech#canplaythrough\n         * @private\n         */\n        handleTechCanPlayThrough_() {\n            this.removeClass('vjs-waiting');\n            /**\n             * The media has a readyState of HAVE_ENOUGH_DATA or greater. This means that the\n             * entire media file can be played without buffering.\n             *\n             * @event Player#canplaythrough\n             * @type {Event}\n             */\n            this.trigger('canplaythrough');\n        }\n\n        /**\n         * Retrigger the `playing` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#playing\n         * @listens Tech#playing\n         * @private\n         */\n        handleTechPlaying_() {\n            this.removeClass('vjs-waiting');\n            /**\n             * The media is no longer blocked from playback, and has started playing.\n             *\n             * @event Player#playing\n             * @type {Event}\n             */\n            this.trigger('playing');\n        }\n\n        /**\n         * Retrigger the `seeking` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#seeking\n         * @listens Tech#seeking\n         * @private\n         */\n        handleTechSeeking_() {\n            this.addClass('vjs-seeking');\n            /**\n             * Fired whenever the player is jumping to a new time\n             *\n             * @event Player#seeking\n             * @type {Event}\n             */\n            this.trigger('seeking');\n        }\n\n        /**\n         * Retrigger the `seeked` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#seeked\n         * @listens Tech#seeked\n         * @private\n         */\n        handleTechSeeked_() {\n            this.removeClass('vjs-seeking', 'vjs-ended');\n            /**\n             * Fired when the player has finished jumping to a new time\n             *\n             * @event Player#seeked\n             * @type {Event}\n             */\n            this.trigger('seeked');\n        }\n\n        /**\n         * Retrigger the `pause` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#pause\n         * @listens Tech#pause\n         * @private\n         */\n        handleTechPause_() {\n            this.removeClass('vjs-playing');\n            this.addClass('vjs-paused');\n            /**\n             * Fired whenever the media has been paused\n             *\n             * @event Player#pause\n             * @type {Event}\n             */\n            this.trigger('pause');\n        }\n\n        /**\n         * Retrigger the `ended` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#ended\n         * @listens Tech#ended\n         * @private\n         */\n        handleTechEnded_() {\n            this.addClass('vjs-ended');\n            this.removeClass('vjs-waiting');\n            if (this.options_.loop) {\n                this.currentTime(0);\n                this.play();\n            } else if (!this.paused()) {\n                this.pause();\n            }\n\n            /**\n             * Fired when the end of the media resource is reached (currentTime == duration)\n             *\n             * @event Player#ended\n             * @type {Event}\n             */\n            this.trigger('ended');\n        }\n\n        /**\n         * Fired when the duration of the media resource is first known or changed\n         *\n         * @listens Tech#durationchange\n         * @private\n         */\n        handleTechDurationChange_() {\n            this.duration(this.techGet_('duration'));\n        }\n\n        /**\n         * Handle a click on the media element to play/pause\n         *\n         * @param {Event} event\n         *        the event that caused this function to trigger\n         *\n         * @listens Tech#click\n         * @private\n         */\n        handleTechClick_(event) {\n            // When controls are disabled a click should not toggle playback because\n            // the click is considered a control\n            if (!this.controls_) {\n                return;\n            }\n            if (this.options_ === undefined || this.options_.userActions === undefined || this.options_.userActions.click === undefined || this.options_.userActions.click !== false) {\n                if (this.options_ !== undefined && this.options_.userActions !== undefined && typeof this.options_.userActions.click === 'function') {\n                    this.options_.userActions.click.call(this, event);\n                } else if (this.paused()) {\n                    silencePromise(this.play());\n                } else {\n                    this.pause();\n                }\n            }\n        }\n\n        /**\n         * Handle a double-click on the media element to enter/exit fullscreen\n         *\n         * @param {Event} event\n         *        the event that caused this function to trigger\n         *\n         * @listens Tech#dblclick\n         * @private\n         */\n        handleTechDoubleClick_(event) {\n            if (!this.controls_) {\n                return;\n            }\n\n            // we do not want to toggle fullscreen state\n            // when double-clicking inside a control bar or a modal\n            const inAllowedEls = Array.prototype.some.call(this.$$('.vjs-control-bar, .vjs-modal-dialog'), el => el.contains(event.target));\n            if (!inAllowedEls) {\n                /*\n         * options.userActions.doubleClick\n         *\n         * If `undefined` or `true`, double-click toggles fullscreen if controls are present\n         * Set to `false` to disable double-click handling\n         * Set to a function to substitute an external double-click handler\n         */\n                if (this.options_ === undefined || this.options_.userActions === undefined || this.options_.userActions.doubleClick === undefined || this.options_.userActions.doubleClick !== false) {\n                    if (this.options_ !== undefined && this.options_.userActions !== undefined && typeof this.options_.userActions.doubleClick === 'function') {\n                        this.options_.userActions.doubleClick.call(this, event);\n                    } else if (this.isFullscreen()) {\n                        this.exitFullscreen();\n                    } else {\n                        this.requestFullscreen();\n                    }\n                }\n            }\n        }\n\n        /**\n         * Handle a tap on the media element. It will toggle the user\n         * activity state, which hides and shows the controls.\n         *\n         * @listens Tech#tap\n         * @private\n         */\n        handleTechTap_() {\n            this.userActive(!this.userActive());\n        }\n\n        /**\n         * Handle touch to start\n         *\n         * @listens Tech#touchstart\n         * @private\n         */\n        handleTechTouchStart_() {\n            this.userWasActive = this.userActive();\n        }\n\n        /**\n         * Handle touch to move\n         *\n         * @listens Tech#touchmove\n         * @private\n         */\n        handleTechTouchMove_() {\n            if (this.userWasActive) {\n                this.reportUserActivity();\n            }\n        }\n\n        /**\n         * Handle touch to end\n         *\n         * @param {Event} event\n         *        the touchend event that triggered\n         *        this function\n         *\n         * @listens Tech#touchend\n         * @private\n         */\n        handleTechTouchEnd_(event) {\n            // Stop the mouse events from also happening\n            if (event.cancelable) {\n                event.preventDefault();\n            }\n        }\n\n        /**\n         * @private\n         */\n        toggleFullscreenClass_() {\n            if (this.isFullscreen()) {\n                this.addClass('vjs-fullscreen');\n            } else {\n                this.removeClass('vjs-fullscreen');\n            }\n        }\n\n        /**\n         * when the document fschange event triggers it calls this\n         */\n        documentFullscreenChange_(e) {\n            const targetPlayer = e.target.player;\n\n            // if another player was fullscreen\n            // do a null check for targetPlayer because older firefox's would put document as e.target\n            if (targetPlayer && targetPlayer !== this) {\n                return;\n            }\n            const el = this.el();\n            let isFs = document[this.fsApi_.fullscreenElement] === el;\n            if (!isFs && el.matches) {\n                isFs = el.matches(':' + this.fsApi_.fullscreen);\n            } else if (!isFs && el.msMatchesSelector) {\n                isFs = el.msMatchesSelector(':' + this.fsApi_.fullscreen);\n            }\n            this.isFullscreen(isFs);\n        }\n\n        /**\n         * Handle Tech Fullscreen Change\n         *\n         * @param {Event} event\n         *        the fullscreenchange event that triggered this function\n         *\n         * @param {Object} data\n         *        the data that was sent with the event\n         *\n         * @private\n         * @listens Tech#fullscreenchange\n         * @fires Player#fullscreenchange\n         */\n        handleTechFullscreenChange_(event, data) {\n            if (data) {\n                if (data.nativeIOSFullscreen) {\n                    this.addClass('vjs-ios-native-fs');\n                    this.tech_.one('webkitendfullscreen', () => {\n                        this.removeClass('vjs-ios-native-fs');\n                    });\n                }\n                this.isFullscreen(data.isFullscreen);\n            }\n        }\n        handleTechFullscreenError_(event, err) {\n            this.trigger('fullscreenerror', err);\n        }\n\n        /**\n         * @private\n         */\n        togglePictureInPictureClass_() {\n            if (this.isInPictureInPicture()) {\n                this.addClass('vjs-picture-in-picture');\n            } else {\n                this.removeClass('vjs-picture-in-picture');\n            }\n        }\n\n        /**\n         * Handle Tech Enter Picture-in-Picture.\n         *\n         * @param {Event} event\n         *        the enterpictureinpicture event that triggered this function\n         *\n         * @private\n         * @listens Tech#enterpictureinpicture\n         */\n        handleTechEnterPictureInPicture_(event) {\n            this.isInPictureInPicture(true);\n        }\n\n        /**\n         * Handle Tech Leave Picture-in-Picture.\n         *\n         * @param {Event} event\n         *        the leavepictureinpicture event that triggered this function\n         *\n         * @private\n         * @listens Tech#leavepictureinpicture\n         */\n        handleTechLeavePictureInPicture_(event) {\n            this.isInPictureInPicture(false);\n        }\n\n        /**\n         * Fires when an error occurred during the loading of an audio/video.\n         *\n         * @private\n         * @listens Tech#error\n         */\n        handleTechError_() {\n            const error = this.tech_.error();\n            this.error(error);\n        }\n\n        /**\n         * Retrigger the `textdata` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#textdata\n         * @listens Tech#textdata\n         * @private\n         */\n        handleTechTextData_() {\n            let data = null;\n            if (arguments.length > 1) {\n                data = arguments[1];\n            }\n\n            /**\n             * Fires when we get a textdata event from tech\n             *\n             * @event Player#textdata\n             * @type {Event}\n             */\n            this.trigger('textdata', data);\n        }\n\n        /**\n         * Get object for cached values.\n         *\n         * @return {Object}\n         *         get the current object cache\n         */\n        getCache() {\n            return this.cache_;\n        }\n\n        /**\n         * Resets the internal cache object.\n         *\n         * Using this function outside the player constructor or reset method may\n         * have unintended side-effects.\n         *\n         * @private\n         */\n        resetCache_() {\n            this.cache_ = {\n                // Right now, the currentTime is not _really_ cached because it is always\n                // retrieved from the tech (see: currentTime). However, for completeness,\n                // we set it to zero here to ensure that if we do start actually caching\n                // it, we reset it along with everything else.\n                currentTime: 0,\n                initTime: 0,\n                inactivityTimeout: this.options_.inactivityTimeout,\n                duration: NaN,\n                lastVolume: 1,\n                lastPlaybackRate: this.defaultPlaybackRate(),\n                media: null,\n                src: '',\n                source: {},\n                sources: [],\n                playbackRates: [],\n                volume: 1\n            };\n        }\n\n        /**\n         * Pass values to the playback tech\n         *\n         * @param {string} [method]\n         *        the method to call\n         *\n         * @param {Object} arg\n         *        the argument to pass\n         *\n         * @private\n         */\n        techCall_(method, arg) {\n            // If it's not ready yet, call method when it is\n\n            this.ready(function () {\n                if (method in allowedSetters) {\n                    return set(this.middleware_, this.tech_, method, arg);\n                } else if (method in allowedMediators) {\n                    return mediate(this.middleware_, this.tech_, method, arg);\n                }\n                try {\n                    if (this.tech_) {\n                        this.tech_[method](arg);\n                    }\n                } catch (e) {\n                    log$1(e);\n                    throw e;\n                }\n            }, true);\n        }\n\n        /**\n         * Mediate attempt to call playback tech method\n         * and return the value of the method called.\n         *\n         * @param {string} method\n         *        Tech method\n         *\n         * @return {*}\n         *         Value returned by the tech method called, undefined if tech\n         *         is not ready or tech method is not present\n         *\n         * @private\n         */\n        techGet_(method) {\n            if (!this.tech_ || !this.tech_.isReady_) {\n                return;\n            }\n            if (method in allowedGetters) {\n                return get(this.middleware_, this.tech_, method);\n            } else if (method in allowedMediators) {\n                return mediate(this.middleware_, this.tech_, method);\n            }\n\n            // Log error when playback tech object is present but method\n            // is undefined or unavailable\n            try {\n                return this.tech_[method]();\n            } catch (e) {\n                // When building additional tech libs, an expected method may not be defined yet\n                if (this.tech_[method] === undefined) {\n                    log$1(`Video.js: ${method} method not defined for ${this.techName_} playback technology.`, e);\n                    throw e;\n                }\n\n                // When a method isn't available on the object it throws a TypeError\n                if (e.name === 'TypeError') {\n                    log$1(`Video.js: ${method} unavailable on ${this.techName_} playback technology element.`, e);\n                    this.tech_.isReady_ = false;\n                    throw e;\n                }\n\n                // If error unknown, just log and throw\n                log$1(e);\n                throw e;\n            }\n        }\n\n        /**\n         * Attempt to begin playback at the first opportunity.\n         *\n         * @return {Promise|undefined}\n         *         Returns a promise if the browser supports Promises (or one\n         *         was passed in as an option). This promise will be resolved on\n         *         the return value of play. If this is undefined it will fulfill the\n         *         promise chain otherwise the promise chain will be fulfilled when\n         *         the promise from play is fulfilled.\n         */\n        play() {\n            return new Promise(resolve => {\n                this.play_(resolve);\n            });\n        }\n\n        /**\n         * The actual logic for play, takes a callback that will be resolved on the\n         * return value of play. This allows us to resolve to the play promise if there\n         * is one on modern browsers.\n         *\n         * @private\n         * @param {Function} [callback]\n         *        The callback that should be called when the techs play is actually called\n         */\n        play_(callback = silencePromise) {\n            this.playCallbacks_.push(callback);\n            const isSrcReady = Boolean(!this.changingSrc_ && (this.src() || this.currentSrc()));\n            const isSafariOrIOS = Boolean(IS_ANY_SAFARI || IS_IOS);\n\n            // treat calls to play_ somewhat like the `one` event function\n            if (this.waitToPlay_) {\n                this.off(['ready', 'loadstart'], this.waitToPlay_);\n                this.waitToPlay_ = null;\n            }\n\n            // if the player/tech is not ready or the src itself is not ready\n            // queue up a call to play on `ready` or `loadstart`\n            if (!this.isReady_ || !isSrcReady) {\n                this.waitToPlay_ = e => {\n                    this.play_();\n                };\n                this.one(['ready', 'loadstart'], this.waitToPlay_);\n\n                // if we are in Safari, there is a high chance that loadstart will trigger after the gesture timeperiod\n                // in that case, we need to prime the video element by calling load so it'll be ready in time\n                if (!isSrcReady && isSafariOrIOS) {\n                    this.load();\n                }\n                return;\n            }\n\n            // If the player/tech is ready and we have a source, we can attempt playback.\n            const val = this.techGet_('play');\n\n            // For native playback, reset the progress bar if we get a play call from a replay.\n            const isNativeReplay = isSafariOrIOS && this.hasClass('vjs-ended');\n            if (isNativeReplay) {\n                this.resetProgressBar_();\n            }\n            // play was terminated if the returned value is null\n            if (val === null) {\n                this.runPlayTerminatedQueue_();\n            } else {\n                this.runPlayCallbacks_(val);\n            }\n        }\n\n        /**\n         * These functions will be run when if play is terminated. If play\n         * runPlayCallbacks_ is run these function will not be run. This allows us\n         * to differentiate between a terminated play and an actual call to play.\n         */\n        runPlayTerminatedQueue_() {\n            const queue = this.playTerminatedQueue_.slice(0);\n            this.playTerminatedQueue_ = [];\n            queue.forEach(function (q) {\n                q();\n            });\n        }\n\n        /**\n         * When a callback to play is delayed we have to run these\n         * callbacks when play is actually called on the tech. This function\n         * runs the callbacks that were delayed and accepts the return value\n         * from the tech.\n         *\n         * @param {undefined|Promise} val\n         *        The return value from the tech.\n         */\n        runPlayCallbacks_(val) {\n            const callbacks = this.playCallbacks_.slice(0);\n            this.playCallbacks_ = [];\n            // clear play terminatedQueue since we finished a real play\n            this.playTerminatedQueue_ = [];\n            callbacks.forEach(function (cb) {\n                cb(val);\n            });\n        }\n\n        /**\n         * Pause the video playback\n         *\n         * @return {Player}\n         *         A reference to the player object this function was called on\n         */\n        pause() {\n            this.techCall_('pause');\n        }\n\n        /**\n         * Check if the player is paused or has yet to play\n         *\n         * @return {boolean}\n         *         - false: if the media is currently playing\n         *         - true: if media is not currently playing\n         */\n        paused() {\n            // The initial state of paused should be true (in Safari it's actually false)\n            return this.techGet_('paused') === false ? false : true;\n        }\n\n        /**\n         * Get a TimeRange object representing the current ranges of time that the user\n         * has played.\n         *\n         * @return { import('./utils/time').TimeRange }\n         *         A time range object that represents all the increments of time that have\n         *         been played.\n         */\n        played() {\n            return this.techGet_('played') || createTimeRanges$1(0, 0);\n        }\n\n        /**\n         * Returns whether or not the user is \"scrubbing\". Scrubbing is\n         * when the user has clicked the progress bar handle and is\n         * dragging it along the progress bar.\n         *\n         * @param {boolean} [isScrubbing]\n         *        whether the user is or is not scrubbing\n         *\n         * @return {boolean}\n         *         The value of scrubbing when getting\n         */\n        scrubbing(isScrubbing) {\n            if (typeof isScrubbing === 'undefined') {\n                return this.scrubbing_;\n            }\n            this.scrubbing_ = !!isScrubbing;\n            this.techCall_('setScrubbing', this.scrubbing_);\n            if (isScrubbing) {\n                this.addClass('vjs-scrubbing');\n            } else {\n                this.removeClass('vjs-scrubbing');\n            }\n        }\n\n        /**\n         * Get or set the current time (in seconds)\n         *\n         * @param {number|string} [seconds]\n         *        The time to seek to in seconds\n         *\n         * @return {number}\n         *         - the current time in seconds when getting\n         */\n        currentTime(seconds) {\n            if (typeof seconds !== 'undefined') {\n                if (seconds < 0) {\n                    seconds = 0;\n                }\n                if (!this.isReady_ || this.changingSrc_ || !this.tech_ || !this.tech_.isReady_) {\n                    this.cache_.initTime = seconds;\n                    this.off('canplay', this.boundApplyInitTime_);\n                    this.one('canplay', this.boundApplyInitTime_);\n                    return;\n                }\n                this.techCall_('setCurrentTime', seconds);\n                this.cache_.initTime = 0;\n                return;\n            }\n\n            // cache last currentTime and return. default to 0 seconds\n            //\n            // Caching the currentTime is meant to prevent a massive amount of reads on the tech's\n            // currentTime when scrubbing, but may not provide much performance benefit after all.\n            // Should be tested. Also something has to read the actual current time or the cache will\n            // never get updated.\n            this.cache_.currentTime = this.techGet_('currentTime') || 0;\n            return this.cache_.currentTime;\n        }\n\n        /**\n         * Apply the value of initTime stored in cache as currentTime.\n         *\n         * @private\n         */\n        applyInitTime_() {\n            this.currentTime(this.cache_.initTime);\n        }\n\n        /**\n         * Normally gets the length in time of the video in seconds;\n         * in all but the rarest use cases an argument will NOT be passed to the method\n         *\n         * > **NOTE**: The video must have started loading before the duration can be\n         * known, and depending on preload behaviour may not be known until the video starts\n         * playing.\n         *\n         * @fires Player#durationchange\n         *\n         * @param {number} [seconds]\n         *        The duration of the video to set in seconds\n         *\n         * @return {number}\n         *         - The duration of the video in seconds when getting\n         */\n        duration(seconds) {\n            if (seconds === undefined) {\n                // return NaN if the duration is not known\n                return this.cache_.duration !== undefined ? this.cache_.duration : NaN;\n            }\n            seconds = parseFloat(seconds);\n\n            // Standardize on Infinity for signaling video is live\n            if (seconds < 0) {\n                seconds = Infinity;\n            }\n            if (seconds !== this.cache_.duration) {\n                // Cache the last set value for optimized scrubbing\n                this.cache_.duration = seconds;\n                if (seconds === Infinity) {\n                    this.addClass('vjs-live');\n                } else {\n                    this.removeClass('vjs-live');\n                }\n                if (!isNaN(seconds)) {\n                    // Do not fire durationchange unless the duration value is known.\n                    // @see [Spec]{@link https://www.w3.org/TR/2011/WD-html5-20110113/video.html#media-element-load-algorithm}\n\n                    /**\n                     * @event Player#durationchange\n                     * @type {Event}\n                     */\n                    this.trigger('durationchange');\n                }\n            }\n        }\n\n        /**\n         * Calculates how much time is left in the video. Not part\n         * of the native video API.\n         *\n         * @return {number}\n         *         The time remaining in seconds\n         */\n        remainingTime() {\n            return this.duration() - this.currentTime();\n        }\n\n        /**\n         * A remaining time function that is intended to be used when\n         * the time is to be displayed directly to the user.\n         *\n         * @return {number}\n         *         The rounded time remaining in seconds\n         */\n        remainingTimeDisplay() {\n            return Math.floor(this.duration()) - Math.floor(this.currentTime());\n        }\n\n        //\n        // Kind of like an array of portions of the video that have been downloaded.\n\n        /**\n         * Get a TimeRange object with an array of the times of the video\n         * that have been downloaded. If you just want the percent of the\n         * video that's been downloaded, use bufferedPercent.\n         *\n         * @see [Buffered Spec]{@link http://dev.w3.org/html5/spec/video.html#dom-media-buffered}\n         *\n         * @return { import('./utils/time').TimeRange }\n         *         A mock {@link TimeRanges} object (following HTML spec)\n         */\n        buffered() {\n            let buffered = this.techGet_('buffered');\n            if (!buffered || !buffered.length) {\n                buffered = createTimeRanges$1(0, 0);\n            }\n            return buffered;\n        }\n\n        /**\n         * Get the percent (as a decimal) of the video that's been downloaded.\n         * This method is not a part of the native HTML video API.\n         *\n         * @return {number}\n         *         A decimal between 0 and 1 representing the percent\n         *         that is buffered 0 being 0% and 1 being 100%\n         */\n        bufferedPercent() {\n            return bufferedPercent(this.buffered(), this.duration());\n        }\n\n        /**\n         * Get the ending time of the last buffered time range\n         * This is used in the progress bar to encapsulate all time ranges.\n         *\n         * @return {number}\n         *         The end of the last buffered time range\n         */\n        bufferedEnd() {\n            const buffered = this.buffered();\n            const duration = this.duration();\n            let end = buffered.end(buffered.length - 1);\n            if (end > duration) {\n                end = duration;\n            }\n            return end;\n        }\n\n        /**\n         * Get or set the current volume of the media\n         *\n         * @param  {number} [percentAsDecimal]\n         *         The new volume as a decimal percent:\n         *         - 0 is muted/0%/off\n         *         - 1.0 is 100%/full\n         *         - 0.5 is half volume or 50%\n         *\n         * @return {number}\n         *         The current volume as a percent when getting\n         */\n        volume(percentAsDecimal) {\n            let vol;\n            if (percentAsDecimal !== undefined) {\n                // Force value to between 0 and 1\n                vol = Math.max(0, Math.min(1, parseFloat(percentAsDecimal)));\n                this.cache_.volume = vol;\n                this.techCall_('setVolume', vol);\n                if (vol > 0) {\n                    this.lastVolume_(vol);\n                }\n                return;\n            }\n\n            // Default to 1 when returning current volume.\n            vol = parseFloat(this.techGet_('volume'));\n            return isNaN(vol) ? 1 : vol;\n        }\n\n        /**\n         * Get the current muted state, or turn mute on or off\n         *\n         * @param {boolean} [muted]\n         *        - true to mute\n         *        - false to unmute\n         *\n         * @return {boolean}\n         *         - true if mute is on and getting\n         *         - false if mute is off and getting\n         */\n        muted(muted) {\n            if (muted !== undefined) {\n                this.techCall_('setMuted', muted);\n                return;\n            }\n            return this.techGet_('muted') || false;\n        }\n\n        /**\n         * Get the current defaultMuted state, or turn defaultMuted on or off. defaultMuted\n         * indicates the state of muted on initial playback.\n         *\n         * ```js\n         *   var myPlayer = videojs('some-player-id');\n         *\n         *   myPlayer.src(\"http://www.example.com/path/to/video.mp4\");\n         *\n         *   // get, should be false\n         *   console.log(myPlayer.defaultMuted());\n         *   // set to true\n         *   myPlayer.defaultMuted(true);\n         *   // get should be true\n         *   console.log(myPlayer.defaultMuted());\n         * ```\n         *\n         * @param {boolean} [defaultMuted]\n         *        - true to mute\n         *        - false to unmute\n         *\n         * @return {boolean|Player}\n         *         - true if defaultMuted is on and getting\n         *         - false if defaultMuted is off and getting\n         *         - A reference to the current player when setting\n         */\n        defaultMuted(defaultMuted) {\n            if (defaultMuted !== undefined) {\n                return this.techCall_('setDefaultMuted', defaultMuted);\n            }\n            return this.techGet_('defaultMuted') || false;\n        }\n\n        /**\n         * Get the last volume, or set it\n         *\n         * @param  {number} [percentAsDecimal]\n         *         The new last volume as a decimal percent:\n         *         - 0 is muted/0%/off\n         *         - 1.0 is 100%/full\n         *         - 0.5 is half volume or 50%\n         *\n         * @return {number}\n         *         the current value of lastVolume as a percent when getting\n         *\n         * @private\n         */\n        lastVolume_(percentAsDecimal) {\n            if (percentAsDecimal !== undefined && percentAsDecimal !== 0) {\n                this.cache_.lastVolume = percentAsDecimal;\n                return;\n            }\n            return this.cache_.lastVolume;\n        }\n\n        /**\n         * Check if current tech can support native fullscreen\n         * (e.g. with built in controls like iOS)\n         *\n         * @return {boolean}\n         *         if native fullscreen is supported\n         */\n        supportsFullScreen() {\n            return this.techGet_('supportsFullScreen') || false;\n        }\n\n        /**\n         * Check if the player is in fullscreen mode or tell the player that it\n         * is or is not in fullscreen mode.\n         *\n         * > NOTE: As of the latest HTML5 spec, isFullscreen is no longer an official\n         * property and instead document.fullscreenElement is used. But isFullscreen is\n         * still a valuable property for internal player workings.\n         *\n         * @param  {boolean} [isFS]\n         *         Set the players current fullscreen state\n         *\n         * @return {boolean}\n         *         - true if fullscreen is on and getting\n         *         - false if fullscreen is off and getting\n         */\n        isFullscreen(isFS) {\n            if (isFS !== undefined) {\n                const oldValue = this.isFullscreen_;\n                this.isFullscreen_ = Boolean(isFS);\n\n                // if we changed fullscreen state and we're in prefixed mode, trigger fullscreenchange\n                // this is the only place where we trigger fullscreenchange events for older browsers\n                // fullWindow mode is treated as a prefixed event and will get a fullscreenchange event as well\n                if (this.isFullscreen_ !== oldValue && this.fsApi_.prefixed) {\n                    /**\n                     * @event Player#fullscreenchange\n                     * @type {Event}\n                     */\n                    this.trigger('fullscreenchange');\n                }\n                this.toggleFullscreenClass_();\n                return;\n            }\n            return this.isFullscreen_;\n        }\n\n        /**\n         * Increase the size of the video to full screen\n         * In some browsers, full screen is not supported natively, so it enters\n         * \"full window mode\", where the video fills the browser window.\n         * In browsers and devices that support native full screen, sometimes the\n         * browser's default controls will be shown, and not the Video.js custom skin.\n         * This includes most mobile devices (iOS, Android) and older versions of\n         * Safari.\n         *\n         * @param  {Object} [fullscreenOptions]\n         *         Override the player fullscreen options\n         *\n         * @fires Player#fullscreenchange\n         */\n        requestFullscreen(fullscreenOptions) {\n            if (this.isInPictureInPicture()) {\n                this.exitPictureInPicture();\n            }\n            const self = this;\n            return new Promise((resolve, reject) => {\n                function offHandler() {\n                    self.off('fullscreenerror', errorHandler);\n                    self.off('fullscreenchange', changeHandler);\n                }\n                function changeHandler() {\n                    offHandler();\n                    resolve();\n                }\n                function errorHandler(e, err) {\n                    offHandler();\n                    reject(err);\n                }\n                self.one('fullscreenchange', changeHandler);\n                self.one('fullscreenerror', errorHandler);\n                const promise = self.requestFullscreenHelper_(fullscreenOptions);\n                if (promise) {\n                    promise.then(offHandler, offHandler);\n                    promise.then(resolve, reject);\n                }\n            });\n        }\n        requestFullscreenHelper_(fullscreenOptions) {\n            let fsOptions;\n\n            // Only pass fullscreen options to requestFullscreen in spec-compliant browsers.\n            // Use defaults or player configured option unless passed directly to this method.\n            if (!this.fsApi_.prefixed) {\n                fsOptions = this.options_.fullscreen && this.options_.fullscreen.options || {};\n                if (fullscreenOptions !== undefined) {\n                    fsOptions = fullscreenOptions;\n                }\n            }\n\n            // This method works as follows:\n            // 1. if a fullscreen api is available, use it\n            //   1. call requestFullscreen with potential options\n            //   2. if we got a promise from above, use it to update isFullscreen()\n            // 2. otherwise, if the tech supports fullscreen, call `enterFullScreen` on it.\n            //   This is particularly used for iPhone, older iPads, and non-safari browser on iOS.\n            // 3. otherwise, use \"fullWindow\" mode\n            if (this.fsApi_.requestFullscreen) {\n                const promise = this.el_[this.fsApi_.requestFullscreen](fsOptions);\n\n                // Even on browsers with promise support this may not return a promise\n                if (promise) {\n                    promise.then(() => this.isFullscreen(true), () => this.isFullscreen(false));\n                }\n                return promise;\n            } else if (this.tech_.supportsFullScreen() && !this.options_.preferFullWindow === true) {\n                // we can't take the video.js controls fullscreen but we can go fullscreen\n                // with native controls\n                this.techCall_('enterFullScreen');\n            } else {\n                // fullscreen isn't supported so we'll just stretch the video element to\n                // fill the viewport\n                this.enterFullWindow();\n            }\n        }\n\n        /**\n         * Return the video to its normal size after having been in full screen mode\n         *\n         * @fires Player#fullscreenchange\n         */\n        exitFullscreen() {\n            const self = this;\n            return new Promise((resolve, reject) => {\n                function offHandler() {\n                    self.off('fullscreenerror', errorHandler);\n                    self.off('fullscreenchange', changeHandler);\n                }\n                function changeHandler() {\n                    offHandler();\n                    resolve();\n                }\n                function errorHandler(e, err) {\n                    offHandler();\n                    reject(err);\n                }\n                self.one('fullscreenchange', changeHandler);\n                self.one('fullscreenerror', errorHandler);\n                const promise = self.exitFullscreenHelper_();\n                if (promise) {\n                    promise.then(offHandler, offHandler);\n                    // map the promise to our resolve/reject methods\n                    promise.then(resolve, reject);\n                }\n            });\n        }\n        exitFullscreenHelper_() {\n            if (this.fsApi_.requestFullscreen) {\n                const promise = document[this.fsApi_.exitFullscreen]();\n\n                // Even on browsers with promise support this may not return a promise\n                if (promise) {\n                    // we're splitting the promise here, so, we want to catch the\n                    // potential error so that this chain doesn't have unhandled errors\n                    silencePromise(promise.then(() => this.isFullscreen(false)));\n                }\n                return promise;\n            } else if (this.tech_.supportsFullScreen() && !this.options_.preferFullWindow === true) {\n                this.techCall_('exitFullScreen');\n            } else {\n                this.exitFullWindow();\n            }\n        }\n\n        /**\n         * When fullscreen isn't supported we can stretch the\n         * video container to as wide as the browser will let us.\n         *\n         * @fires Player#enterFullWindow\n         */\n        enterFullWindow() {\n            this.isFullscreen(true);\n            this.isFullWindow = true;\n\n            // Storing original doc overflow value to return to when fullscreen is off\n            this.docOrigOverflow = document.documentElement.style.overflow;\n\n            // Add listener for esc key to exit fullscreen\n            on(document, 'keydown', this.boundFullWindowOnEscKey_);\n\n            // Hide any scroll bars\n            document.documentElement.style.overflow = 'hidden';\n\n            // Apply fullscreen styles\n            addClass(document.body, 'vjs-full-window');\n\n            /**\n             * @event Player#enterFullWindow\n             * @type {Event}\n             */\n            this.trigger('enterFullWindow');\n        }\n\n        /**\n         * Check for call to either exit full window or\n         * full screen on ESC key\n         *\n         * @param {string} event\n         *        Event to check for key press\n         */\n        fullWindowOnEscKey(event) {\n            if (keycode.isEventKey(event, 'Esc')) {\n                if (this.isFullscreen() === true) {\n                    if (!this.isFullWindow) {\n                        this.exitFullscreen();\n                    } else {\n                        this.exitFullWindow();\n                    }\n                }\n            }\n        }\n\n        /**\n         * Exit full window\n         *\n         * @fires Player#exitFullWindow\n         */\n        exitFullWindow() {\n            this.isFullscreen(false);\n            this.isFullWindow = false;\n            off(document, 'keydown', this.boundFullWindowOnEscKey_);\n\n            // Unhide scroll bars.\n            document.documentElement.style.overflow = this.docOrigOverflow;\n\n            // Remove fullscreen styles\n            removeClass(document.body, 'vjs-full-window');\n\n            // Resize the box, controller, and poster to original sizes\n            // this.positionAll();\n            /**\n             * @event Player#exitFullWindow\n             * @type {Event}\n             */\n            this.trigger('exitFullWindow');\n        }\n\n        /**\n         * Disable Picture-in-Picture mode.\n         *\n         * @param {boolean} value\n         *                  - true will disable Picture-in-Picture mode\n         *                  - false will enable Picture-in-Picture mode\n         */\n        disablePictureInPicture(value) {\n            if (value === undefined) {\n                return this.techGet_('disablePictureInPicture');\n            }\n            this.techCall_('setDisablePictureInPicture', value);\n            this.options_.disablePictureInPicture = value;\n            this.trigger('disablepictureinpicturechanged');\n        }\n\n        /**\n         * Check if the player is in Picture-in-Picture mode or tell the player that it\n         * is or is not in Picture-in-Picture mode.\n         *\n         * @param  {boolean} [isPiP]\n         *         Set the players current Picture-in-Picture state\n         *\n         * @return {boolean}\n         *         - true if Picture-in-Picture is on and getting\n         *         - false if Picture-in-Picture is off and getting\n         */\n        isInPictureInPicture(isPiP) {\n            if (isPiP !== undefined) {\n                this.isInPictureInPicture_ = !!isPiP;\n                this.togglePictureInPictureClass_();\n                return;\n            }\n            return !!this.isInPictureInPicture_;\n        }\n\n        /**\n         * Create a floating video window always on top of other windows so that users may\n         * continue consuming media while they interact with other content sites, or\n         * applications on their device.\n         *\n         * This can use document picture-in-picture or element picture in picture\n         *\n         * Set `enableDocumentPictureInPicture` to `true` to use docPiP on a supported browser\n         * Else set `disablePictureInPicture` to `false` to disable elPiP on a supported browser\n         *\n         *\n         * @see [Spec]{@link https://w3c.github.io/picture-in-picture/}\n         * @see [Spec]{@link https://wicg.github.io/document-picture-in-picture/}\n         *\n         * @fires Player#enterpictureinpicture\n         *\n         * @return {Promise}\n         *         A promise with a Picture-in-Picture window.\n         */\n        requestPictureInPicture() {\n            if (this.options_.enableDocumentPictureInPicture && window.documentPictureInPicture) {\n                const pipContainer = document.createElement(this.el().tagName);\n                pipContainer.classList = this.el().classList;\n                pipContainer.classList.add('vjs-pip-container');\n                if (this.posterImage) {\n                    pipContainer.appendChild(this.posterImage.el().cloneNode(true));\n                }\n                if (this.titleBar) {\n                    pipContainer.appendChild(this.titleBar.el().cloneNode(true));\n                }\n                pipContainer.appendChild(createEl('p', {\n                    className: 'vjs-pip-text'\n                }, {}, this.localize('Playing in picture-in-picture')));\n                return window.documentPictureInPicture.requestWindow({\n                    // The aspect ratio won't be correct, Chrome bug https://crbug.com/1407629\n                    initialAspectRatio: this.videoWidth() / this.videoHeight(),\n                    copyStyleSheets: true\n                }).then(pipWindow => {\n                    this.el_.parentNode.insertBefore(pipContainer, this.el_);\n                    pipWindow.document.body.append(this.el_);\n                    pipWindow.document.body.classList.add('vjs-pip-window');\n                    this.player_.isInPictureInPicture(true);\n                    this.player_.trigger('enterpictureinpicture');\n\n                    // Listen for the PiP closing event to move the video back.\n                    pipWindow.addEventListener('unload', event => {\n                        const pipVideo = event.target.querySelector('.video-js');\n                        pipContainer.replaceWith(pipVideo);\n                        this.player_.isInPictureInPicture(false);\n                        this.player_.trigger('leavepictureinpicture');\n                    });\n                    return pipWindow;\n                });\n            }\n            if ('pictureInPictureEnabled' in document && this.disablePictureInPicture() === false) {\n                /**\n                 * This event fires when the player enters picture in picture mode\n                 *\n                 * @event Player#enterpictureinpicture\n                 * @type {Event}\n                 */\n                return this.techGet_('requestPictureInPicture');\n            }\n            return Promise.reject('No PiP mode is available');\n        }\n\n        /**\n         * Exit Picture-in-Picture mode.\n         *\n         * @see [Spec]{@link https://wicg.github.io/picture-in-picture}\n         *\n         * @fires Player#leavepictureinpicture\n         *\n         * @return {Promise}\n         *         A promise.\n         */\n        exitPictureInPicture() {\n            if (window.documentPictureInPicture && window.documentPictureInPicture.window) {\n                // With documentPictureInPicture, Player#leavepictureinpicture is fired in the unload handler\n                window.documentPictureInPicture.window.close();\n                return Promise.resolve();\n            }\n            if ('pictureInPictureEnabled' in document) {\n                /**\n                 * This event fires when the player leaves picture in picture mode\n                 *\n                 * @event Player#leavepictureinpicture\n                 * @type {Event}\n                 */\n                return document.exitPictureInPicture();\n            }\n        }\n\n        /**\n         * Called when this Player has focus and a key gets pressed down, or when\n         * any Component of this player receives a key press that it doesn't handle.\n         * This allows player-wide hotkeys (either as defined below, or optionally\n         * by an external function).\n         *\n         * @param {Event} event\n         *        The `keydown` event that caused this function to be called.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            const {\n                userActions\n            } = this.options_;\n\n            // Bail out if hotkeys are not configured.\n            if (!userActions || !userActions.hotkeys) {\n                return;\n            }\n\n            // Function that determines whether or not to exclude an element from\n            // hotkeys handling.\n            const excludeElement = el => {\n                const tagName = el.tagName.toLowerCase();\n\n                // The first and easiest test is for `contenteditable` elements.\n                if (el.isContentEditable) {\n                    return true;\n                }\n\n                // Inputs matching these types will still trigger hotkey handling as\n                // they are not text inputs.\n                const allowedInputTypes = ['button', 'checkbox', 'hidden', 'radio', 'reset', 'submit'];\n                if (tagName === 'input') {\n                    return allowedInputTypes.indexOf(el.type) === -1;\n                }\n\n                // The final test is by tag name. These tags will be excluded entirely.\n                const excludedTags = ['textarea'];\n                return excludedTags.indexOf(tagName) !== -1;\n            };\n\n            // Bail out if the user is focused on an interactive form element.\n            if (excludeElement(this.el_.ownerDocument.activeElement)) {\n                return;\n            }\n            if (typeof userActions.hotkeys === 'function') {\n                userActions.hotkeys.call(this, event);\n            } else {\n                this.handleHotkeys(event);\n            }\n        }\n\n        /**\n         * Called when this Player receives a hotkey keydown event.\n         * Supported player-wide hotkeys are:\n         *\n         *   f          - toggle fullscreen\n         *   m          - toggle mute\n         *   k or Space - toggle play/pause\n         *\n         * @param {Event} event\n         *        The `keydown` event that caused this function to be called.\n         */\n        handleHotkeys(event) {\n            const hotkeys = this.options_.userActions ? this.options_.userActions.hotkeys : {};\n\n            // set fullscreenKey, muteKey, playPauseKey from `hotkeys`, use defaults if not set\n            const {\n                fullscreenKey = keydownEvent => keycode.isEventKey(keydownEvent, 'f'),\n                muteKey = keydownEvent => keycode.isEventKey(keydownEvent, 'm'),\n                playPauseKey = keydownEvent => keycode.isEventKey(keydownEvent, 'k') || keycode.isEventKey(keydownEvent, 'Space')\n            } = hotkeys;\n            if (fullscreenKey.call(this, event)) {\n                event.preventDefault();\n                event.stopPropagation();\n                const FSToggle = Component$1.getComponent('FullscreenToggle');\n                if (document[this.fsApi_.fullscreenEnabled] !== false) {\n                    FSToggle.prototype.handleClick.call(this, event);\n                }\n            } else if (muteKey.call(this, event)) {\n                event.preventDefault();\n                event.stopPropagation();\n                const MuteToggle = Component$1.getComponent('MuteToggle');\n                MuteToggle.prototype.handleClick.call(this, event);\n            } else if (playPauseKey.call(this, event)) {\n                event.preventDefault();\n                event.stopPropagation();\n                const PlayToggle = Component$1.getComponent('PlayToggle');\n                PlayToggle.prototype.handleClick.call(this, event);\n            }\n        }\n\n        /**\n         * Check whether the player can play a given mimetype\n         *\n         * @see https://www.w3.org/TR/2011/WD-html5-20110113/video.html#dom-navigator-canplaytype\n         *\n         * @param {string} type\n         *        The mimetype to check\n         *\n         * @return {string}\n         *         'probably', 'maybe', or '' (empty string)\n         */\n        canPlayType(type) {\n            let can;\n\n            // Loop through each playback technology in the options order\n            for (let i = 0, j = this.options_.techOrder; i < j.length; i++) {\n                const techName = j[i];\n                let tech = Tech.getTech(techName);\n\n                // Support old behavior of techs being registered as components.\n                // Remove once that deprecated behavior is removed.\n                if (!tech) {\n                    tech = Component$1.getComponent(techName);\n                }\n\n                // Check if the current tech is defined before continuing\n                if (!tech) {\n                    log$1.error(`The \"${techName}\" tech is undefined. Skipped browser support check for that tech.`);\n                    continue;\n                }\n\n                // Check if the browser supports this technology\n                if (tech.isSupported()) {\n                    can = tech.canPlayType(type);\n                    if (can) {\n                        return can;\n                    }\n                }\n            }\n            return '';\n        }\n\n        /**\n         * Select source based on tech-order or source-order\n         * Uses source-order selection if `options.sourceOrder` is truthy. Otherwise,\n         * defaults to tech-order selection\n         *\n         * @param {Array} sources\n         *        The sources for a media asset\n         *\n         * @return {Object|boolean}\n         *         Object of source and tech order or false\n         */\n        selectSource(sources) {\n            // Get only the techs specified in `techOrder` that exist and are supported by the\n            // current platform\n            const techs = this.options_.techOrder.map(techName => {\n                return [techName, Tech.getTech(techName)];\n            }).filter(([techName, tech]) => {\n                // Check if the current tech is defined before continuing\n                if (tech) {\n                    // Check if the browser supports this technology\n                    return tech.isSupported();\n                }\n                log$1.error(`The \"${techName}\" tech is undefined. Skipped browser support check for that tech.`);\n                return false;\n            });\n\n            // Iterate over each `innerArray` element once per `outerArray` element and execute\n            // `tester` with both. If `tester` returns a non-falsy value, exit early and return\n            // that value.\n            const findFirstPassingTechSourcePair = function (outerArray, innerArray, tester) {\n                let found;\n                outerArray.some(outerChoice => {\n                    return innerArray.some(innerChoice => {\n                        found = tester(outerChoice, innerChoice);\n                        if (found) {\n                            return true;\n                        }\n                    });\n                });\n                return found;\n            };\n            let foundSourceAndTech;\n            const flip = fn => (a, b) => fn(b, a);\n            const finder = ([techName, tech], source) => {\n                if (tech.canPlaySource(source, this.options_[techName.toLowerCase()])) {\n                    return {\n                        source,\n                        tech: techName\n                    };\n                }\n            };\n\n            // Depending on the truthiness of `options.sourceOrder`, we swap the order of techs and sources\n            // to select from them based on their priority.\n            if (this.options_.sourceOrder) {\n                // Source-first ordering\n                foundSourceAndTech = findFirstPassingTechSourcePair(sources, techs, flip(finder));\n            } else {\n                // Tech-first ordering\n                foundSourceAndTech = findFirstPassingTechSourcePair(techs, sources, finder);\n            }\n            return foundSourceAndTech || false;\n        }\n\n        /**\n         * Executes source setting and getting logic\n         *\n         * @param {Tech~SourceObject|Tech~SourceObject[]|string} [source]\n         *        A SourceObject, an array of SourceObjects, or a string referencing\n         *        a URL to a media source. It is _highly recommended_ that an object\n         *        or array of objects is used here, so that source selection\n         *        algorithms can take the `type` into account.\n         *\n         *        If not provided, this method acts as a getter.\n         * @param {boolean} isRetry\n         *        Indicates whether this is being called internally as a result of a retry\n         *\n         * @return {string|undefined}\n         *         If the `source` argument is missing, returns the current source\n         *         URL. Otherwise, returns nothing/undefined.\n         */\n        handleSrc_(source, isRetry) {\n            // getter usage\n            if (typeof source === 'undefined') {\n                return this.cache_.src || '';\n            }\n\n            // Reset retry behavior for new source\n            if (this.resetRetryOnError_) {\n                this.resetRetryOnError_();\n            }\n\n            // filter out invalid sources and turn our source into\n            // an array of source objects\n            const sources = filterSource(source);\n\n            // if a source was passed in then it is invalid because\n            // it was filtered to a zero length Array. So we have to\n            // show an error\n            if (!sources.length) {\n                this.setTimeout(function () {\n                    this.error({\n                        code: 4,\n                        message: this.options_.notSupportedMessage\n                    });\n                }, 0);\n                return;\n            }\n\n            // initial sources\n            this.changingSrc_ = true;\n\n            // Only update the cached source list if we are not retrying a new source after error,\n            // since in that case we want to include the failed source(s) in the cache\n            if (!isRetry) {\n                this.cache_.sources = sources;\n            }\n            this.updateSourceCaches_(sources[0]);\n\n            // middlewareSource is the source after it has been changed by middleware\n            setSource(this, sources[0], (middlewareSource, mws) => {\n                this.middleware_ = mws;\n\n                // since sourceSet is async we have to update the cache again after we select a source since\n                // the source that is selected could be out of order from the cache update above this callback.\n                if (!isRetry) {\n                    this.cache_.sources = sources;\n                }\n                this.updateSourceCaches_(middlewareSource);\n                const err = this.src_(middlewareSource);\n                if (err) {\n                    if (sources.length > 1) {\n                        return this.handleSrc_(sources.slice(1));\n                    }\n                    this.changingSrc_ = false;\n\n                    // We need to wrap this in a timeout to give folks a chance to add error event handlers\n                    this.setTimeout(function () {\n                        this.error({\n                            code: 4,\n                            message: this.options_.notSupportedMessage\n                        });\n                    }, 0);\n\n                    // we could not find an appropriate tech, but let's still notify the delegate that this is it\n                    // this needs a better comment about why this is needed\n                    this.triggerReady();\n                    return;\n                }\n                setTech(mws, this.tech_);\n            });\n\n            // Try another available source if this one fails before playback.\n            if (sources.length > 1) {\n                const retry = () => {\n                    // Remove the error modal\n                    this.error(null);\n                    this.handleSrc_(sources.slice(1), true);\n                };\n                const stopListeningForErrors = () => {\n                    this.off('error', retry);\n                };\n                this.one('error', retry);\n                this.one('playing', stopListeningForErrors);\n                this.resetRetryOnError_ = () => {\n                    this.off('error', retry);\n                    this.off('playing', stopListeningForErrors);\n                };\n            }\n        }\n\n        /**\n         * Get or set the video source.\n         *\n         * @param {Tech~SourceObject|Tech~SourceObject[]|string} [source]\n         *        A SourceObject, an array of SourceObjects, or a string referencing\n         *        a URL to a media source. It is _highly recommended_ that an object\n         *        or array of objects is used here, so that source selection\n         *        algorithms can take the `type` into account.\n         *\n         *        If not provided, this method acts as a getter.\n         *\n         * @return {string|undefined}\n         *         If the `source` argument is missing, returns the current source\n         *         URL. Otherwise, returns nothing/undefined.\n         */\n        src(source) {\n            return this.handleSrc_(source, false);\n        }\n\n        /**\n         * Set the source object on the tech, returns a boolean that indicates whether\n         * there is a tech that can play the source or not\n         *\n         * @param {Tech~SourceObject} source\n         *        The source object to set on the Tech\n         *\n         * @return {boolean}\n         *         - True if there is no Tech to playback this source\n         *         - False otherwise\n         *\n         * @private\n         */\n        src_(source) {\n            const sourceTech = this.selectSource([source]);\n            if (!sourceTech) {\n                return true;\n            }\n            if (!titleCaseEquals(sourceTech.tech, this.techName_)) {\n                this.changingSrc_ = true;\n                // load this technology with the chosen source\n                this.loadTech_(sourceTech.tech, sourceTech.source);\n                this.tech_.ready(() => {\n                    this.changingSrc_ = false;\n                });\n                return false;\n            }\n\n            // wait until the tech is ready to set the source\n            // and set it synchronously if possible (#2326)\n            this.ready(function () {\n                // The setSource tech method was added with source handlers\n                // so older techs won't support it\n                // We need to check the direct prototype for the case where subclasses\n                // of the tech do not support source handlers\n                if (this.tech_.constructor.prototype.hasOwnProperty('setSource')) {\n                    this.techCall_('setSource', source);\n                } else {\n                    this.techCall_('src', source.src);\n                }\n                this.changingSrc_ = false;\n            }, true);\n            return false;\n        }\n\n        /**\n         * Begin loading the src data.\n         */\n        load() {\n            this.techCall_('load');\n        }\n\n        /**\n         * Reset the player. Loads the first tech in the techOrder,\n         * removes all the text tracks in the existing `tech`,\n         * and calls `reset` on the `tech`.\n         */\n        reset() {\n            if (this.paused()) {\n                this.doReset_();\n            } else {\n                const playPromise = this.play();\n                silencePromise(playPromise.then(() => this.doReset_()));\n            }\n        }\n        doReset_() {\n            if (this.tech_) {\n                this.tech_.clearTracks('text');\n            }\n            this.resetCache_();\n            this.poster('');\n            this.loadTech_(this.options_.techOrder[0], null);\n            this.techCall_('reset');\n            this.resetControlBarUI_();\n            if (isEvented(this)) {\n                this.trigger('playerreset');\n            }\n        }\n\n        /**\n         * Reset Control Bar's UI by calling sub-methods that reset\n         * all of Control Bar's components\n         */\n        resetControlBarUI_() {\n            this.resetProgressBar_();\n            this.resetPlaybackRate_();\n            this.resetVolumeBar_();\n        }\n\n        /**\n         * Reset tech's progress so progress bar is reset in the UI\n         */\n        resetProgressBar_() {\n            this.currentTime(0);\n            const {\n                currentTimeDisplay,\n                durationDisplay,\n                progressControl,\n                remainingTimeDisplay\n            } = this.controlBar || {};\n            const {\n                seekBar\n            } = progressControl || {};\n            if (currentTimeDisplay) {\n                currentTimeDisplay.updateContent();\n            }\n            if (durationDisplay) {\n                durationDisplay.updateContent();\n            }\n            if (remainingTimeDisplay) {\n                remainingTimeDisplay.updateContent();\n            }\n            if (seekBar) {\n                seekBar.update();\n                if (seekBar.loadProgressBar) {\n                    seekBar.loadProgressBar.update();\n                }\n            }\n        }\n\n        /**\n         * Reset Playback ratio\n         */\n        resetPlaybackRate_() {\n            this.playbackRate(this.defaultPlaybackRate());\n            this.handleTechRateChange_();\n        }\n\n        /**\n         * Reset Volume bar\n         */\n        resetVolumeBar_() {\n            this.volume(1.0);\n            this.trigger('volumechange');\n        }\n\n        /**\n         * Returns all of the current source objects.\n         *\n         * @return {Tech~SourceObject[]}\n         *         The current source objects\n         */\n        currentSources() {\n            const source = this.currentSource();\n            const sources = [];\n\n            // assume `{}` or `{ src }`\n            if (Object.keys(source).length !== 0) {\n                sources.push(source);\n            }\n            return this.cache_.sources || sources;\n        }\n\n        /**\n         * Returns the current source object.\n         *\n         * @return {Tech~SourceObject}\n         *         The current source object\n         */\n        currentSource() {\n            return this.cache_.source || {};\n        }\n\n        /**\n         * Returns the fully qualified URL of the current source value e.g. http://mysite.com/video.mp4\n         * Can be used in conjunction with `currentType` to assist in rebuilding the current source object.\n         *\n         * @return {string}\n         *         The current source\n         */\n        currentSrc() {\n            return this.currentSource() && this.currentSource().src || '';\n        }\n\n        /**\n         * Get the current source type e.g. video/mp4\n         * This can allow you rebuild the current source object so that you could load the same\n         * source and tech later\n         *\n         * @return {string}\n         *         The source MIME type\n         */\n        currentType() {\n            return this.currentSource() && this.currentSource().type || '';\n        }\n\n        /**\n         * Get or set the preload attribute\n         *\n         * @param {boolean} [value]\n         *        - true means that we should preload\n         *        - false means that we should not preload\n         *\n         * @return {string}\n         *         The preload attribute value when getting\n         */\n        preload(value) {\n            if (value !== undefined) {\n                this.techCall_('setPreload', value);\n                this.options_.preload = value;\n                return;\n            }\n            return this.techGet_('preload');\n        }\n\n        /**\n         * Get or set the autoplay option. When this is a boolean it will\n         * modify the attribute on the tech. When this is a string the attribute on\n         * the tech will be removed and `Player` will handle autoplay on loadstarts.\n         *\n         * @param {boolean|string} [value]\n         *        - true: autoplay using the browser behavior\n         *        - false: do not autoplay\n         *        - 'play': call play() on every loadstart\n         *        - 'muted': call muted() then play() on every loadstart\n         *        - 'any': call play() on every loadstart. if that fails call muted() then play().\n         *        - *: values other than those listed here will be set `autoplay` to true\n         *\n         * @return {boolean|string}\n         *         The current value of autoplay when getting\n         */\n        autoplay(value) {\n            // getter usage\n            if (value === undefined) {\n                return this.options_.autoplay || false;\n            }\n            let techAutoplay;\n\n            // if the value is a valid string set it to that, or normalize `true` to 'play', if need be\n            if (typeof value === 'string' && /(any|play|muted)/.test(value) || value === true && this.options_.normalizeAutoplay) {\n                this.options_.autoplay = value;\n                this.manualAutoplay_(typeof value === 'string' ? value : 'play');\n                techAutoplay = false;\n\n                // any falsy value sets autoplay to false in the browser,\n                // lets do the same\n            } else if (!value) {\n                this.options_.autoplay = false;\n\n                // any other value (ie truthy) sets autoplay to true\n            } else {\n                this.options_.autoplay = true;\n            }\n            techAutoplay = typeof techAutoplay === 'undefined' ? this.options_.autoplay : techAutoplay;\n\n            // if we don't have a tech then we do not queue up\n            // a setAutoplay call on tech ready. We do this because the\n            // autoplay option will be passed in the constructor and we\n            // do not need to set it twice\n            if (this.tech_) {\n                this.techCall_('setAutoplay', techAutoplay);\n            }\n        }\n\n        /**\n         * Set or unset the playsinline attribute.\n         * Playsinline tells the browser that non-fullscreen playback is preferred.\n         *\n         * @param {boolean} [value]\n         *        - true means that we should try to play inline by default\n         *        - false means that we should use the browser's default playback mode,\n         *          which in most cases is inline. iOS Safari is a notable exception\n         *          and plays fullscreen by default.\n         *\n         * @return {string|Player}\n         *         - the current value of playsinline\n         *         - the player when setting\n         *\n         * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}\n         */\n        playsinline(value) {\n            if (value !== undefined) {\n                this.techCall_('setPlaysinline', value);\n                this.options_.playsinline = value;\n                return this;\n            }\n            return this.techGet_('playsinline');\n        }\n\n        /**\n         * Get or set the loop attribute on the video element.\n         *\n         * @param {boolean} [value]\n         *        - true means that we should loop the video\n         *        - false means that we should not loop the video\n         *\n         * @return {boolean}\n         *         The current value of loop when getting\n         */\n        loop(value) {\n            if (value !== undefined) {\n                this.techCall_('setLoop', value);\n                this.options_.loop = value;\n                return;\n            }\n            return this.techGet_('loop');\n        }\n\n        /**\n         * Get or set the poster image source url\n         *\n         * @fires Player#posterchange\n         *\n         * @param {string} [src]\n         *        Poster image source URL\n         *\n         * @return {string}\n         *         The current value of poster when getting\n         */\n        poster(src) {\n            if (src === undefined) {\n                return this.poster_;\n            }\n\n            // The correct way to remove a poster is to set as an empty string\n            // other falsey values will throw errors\n            if (!src) {\n                src = '';\n            }\n            if (src === this.poster_) {\n                return;\n            }\n\n            // update the internal poster variable\n            this.poster_ = src;\n\n            // update the tech's poster\n            this.techCall_('setPoster', src);\n            this.isPosterFromTech_ = false;\n\n            // alert components that the poster has been set\n            /**\n             * This event fires when the poster image is changed on the player.\n             *\n             * @event Player#posterchange\n             * @type {Event}\n             */\n            this.trigger('posterchange');\n        }\n\n        /**\n         * Some techs (e.g. YouTube) can provide a poster source in an\n         * asynchronous way. We want the poster component to use this\n         * poster source so that it covers up the tech's controls.\n         * (YouTube's play button). However we only want to use this\n         * source if the player user hasn't set a poster through\n         * the normal APIs.\n         *\n         * @fires Player#posterchange\n         * @listens Tech#posterchange\n         * @private\n         */\n        handleTechPosterChange_() {\n            if ((!this.poster_ || this.options_.techCanOverridePoster) && this.tech_ && this.tech_.poster) {\n                const newPoster = this.tech_.poster() || '';\n                if (newPoster !== this.poster_) {\n                    this.poster_ = newPoster;\n                    this.isPosterFromTech_ = true;\n\n                    // Let components know the poster has changed\n                    this.trigger('posterchange');\n                }\n            }\n        }\n\n        /**\n         * Get or set whether or not the controls are showing.\n         *\n         * @fires Player#controlsenabled\n         *\n         * @param {boolean} [bool]\n         *        - true to turn controls on\n         *        - false to turn controls off\n         *\n         * @return {boolean}\n         *         The current value of controls when getting\n         */\n        controls(bool) {\n            if (bool === undefined) {\n                return !!this.controls_;\n            }\n            bool = !!bool;\n\n            // Don't trigger a change event unless it actually changed\n            if (this.controls_ === bool) {\n                return;\n            }\n            this.controls_ = bool;\n            if (this.usingNativeControls()) {\n                this.techCall_('setControls', bool);\n            }\n            if (this.controls_) {\n                this.removeClass('vjs-controls-disabled');\n                this.addClass('vjs-controls-enabled');\n                /**\n                 * @event Player#controlsenabled\n                 * @type {Event}\n                 */\n                this.trigger('controlsenabled');\n                if (!this.usingNativeControls()) {\n                    this.addTechControlsListeners_();\n                }\n            } else {\n                this.removeClass('vjs-controls-enabled');\n                this.addClass('vjs-controls-disabled');\n                /**\n                 * @event Player#controlsdisabled\n                 * @type {Event}\n                 */\n                this.trigger('controlsdisabled');\n                if (!this.usingNativeControls()) {\n                    this.removeTechControlsListeners_();\n                }\n            }\n        }\n\n        /**\n         * Toggle native controls on/off. Native controls are the controls built into\n         * devices (e.g. default iPhone controls) or other techs\n         * (e.g. Vimeo Controls)\n         * **This should only be set by the current tech, because only the tech knows\n         * if it can support native controls**\n         *\n         * @fires Player#usingnativecontrols\n         * @fires Player#usingcustomcontrols\n         *\n         * @param {boolean} [bool]\n         *        - true to turn native controls on\n         *        - false to turn native controls off\n         *\n         * @return {boolean}\n         *         The current value of native controls when getting\n         */\n        usingNativeControls(bool) {\n            if (bool === undefined) {\n                return !!this.usingNativeControls_;\n            }\n            bool = !!bool;\n\n            // Don't trigger a change event unless it actually changed\n            if (this.usingNativeControls_ === bool) {\n                return;\n            }\n            this.usingNativeControls_ = bool;\n            if (this.usingNativeControls_) {\n                this.addClass('vjs-using-native-controls');\n\n                /**\n                 * player is using the native device controls\n                 *\n                 * @event Player#usingnativecontrols\n                 * @type {Event}\n                 */\n                this.trigger('usingnativecontrols');\n            } else {\n                this.removeClass('vjs-using-native-controls');\n\n                /**\n                 * player is using the custom HTML controls\n                 *\n                 * @event Player#usingcustomcontrols\n                 * @type {Event}\n                 */\n                this.trigger('usingcustomcontrols');\n            }\n        }\n\n        /**\n         * Set or get the current MediaError\n         *\n         * @fires Player#error\n         *\n         * @param  {MediaError|string|number} [err]\n         *         A MediaError or a string/number to be turned\n         *         into a MediaError\n         *\n         * @return {MediaError|null}\n         *         The current MediaError when getting (or null)\n         */\n        error(err) {\n            if (err === undefined) {\n                return this.error_ || null;\n            }\n\n            // allow hooks to modify error object\n            hooks('beforeerror').forEach(hookFunction => {\n                const newErr = hookFunction(this, err);\n                if (!(isObject$1(newErr) && !Array.isArray(newErr) || typeof newErr === 'string' || typeof newErr === 'number' || newErr === null)) {\n                    this.log.error('please return a value that MediaError expects in beforeerror hooks');\n                    return;\n                }\n                err = newErr;\n            });\n\n            // Suppress the first error message for no compatible source until\n            // user interaction\n            if (this.options_.suppressNotSupportedError && err && err.code === 4) {\n                const triggerSuppressedError = function () {\n                    this.error(err);\n                };\n                this.options_.suppressNotSupportedError = false;\n                this.any(['click', 'touchstart'], triggerSuppressedError);\n                this.one('loadstart', function () {\n                    this.off(['click', 'touchstart'], triggerSuppressedError);\n                });\n                return;\n            }\n\n            // restoring to default\n            if (err === null) {\n                this.error_ = err;\n                this.removeClass('vjs-error');\n                if (this.errorDisplay) {\n                    this.errorDisplay.close();\n                }\n                return;\n            }\n            this.error_ = new MediaError(err);\n\n            // add the vjs-error classname to the player\n            this.addClass('vjs-error');\n\n            // log the name of the error type and any message\n            // IE11 logs \"[object object]\" and required you to expand message to see error object\n            log$1.error(`(CODE:${this.error_.code} ${MediaError.errorTypes[this.error_.code]})`, this.error_.message, this.error_);\n\n            /**\n             * @event Player#error\n             * @type {Event}\n             */\n            this.trigger('error');\n\n            // notify hooks of the per player error\n            hooks('error').forEach(hookFunction => hookFunction(this, this.error_));\n            return;\n        }\n\n        /**\n         * Report user activity\n         *\n         * @param {Object} event\n         *        Event object\n         */\n        reportUserActivity(event) {\n            this.userActivity_ = true;\n        }\n\n        /**\n         * Get/set if user is active\n         *\n         * @fires Player#useractive\n         * @fires Player#userinactive\n         *\n         * @param {boolean} [bool]\n         *        - true if the user is active\n         *        - false if the user is inactive\n         *\n         * @return {boolean}\n         *         The current value of userActive when getting\n         */\n        userActive(bool) {\n            if (bool === undefined) {\n                return this.userActive_;\n            }\n            bool = !!bool;\n            if (bool === this.userActive_) {\n                return;\n            }\n            this.userActive_ = bool;\n            if (this.userActive_) {\n                this.userActivity_ = true;\n                this.removeClass('vjs-user-inactive');\n                this.addClass('vjs-user-active');\n                /**\n                 * @event Player#useractive\n                 * @type {Event}\n                 */\n                this.trigger('useractive');\n                return;\n            }\n\n            // Chrome/Safari/IE have bugs where when you change the cursor it can\n            // trigger a mousemove event. This causes an issue when you're hiding\n            // the cursor when the user is inactive, and a mousemove signals user\n            // activity. Making it impossible to go into inactive mode. Specifically\n            // this happens in fullscreen when we really need to hide the cursor.\n            //\n            // When this gets resolved in ALL browsers it can be removed\n            // https://code.google.com/p/chromium/issues/detail?id=103041\n            if (this.tech_) {\n                this.tech_.one('mousemove', function (e) {\n                    e.stopPropagation();\n                    e.preventDefault();\n                });\n            }\n            this.userActivity_ = false;\n            this.removeClass('vjs-user-active');\n            this.addClass('vjs-user-inactive');\n            /**\n             * @event Player#userinactive\n             * @type {Event}\n             */\n            this.trigger('userinactive');\n        }\n\n        /**\n         * Listen for user activity based on timeout value\n         *\n         * @private\n         */\n        listenForUserActivity_() {\n            let mouseInProgress;\n            let lastMoveX;\n            let lastMoveY;\n            const handleActivity = bind_(this, this.reportUserActivity);\n            const handleMouseMove = function (e) {\n                // #1068 - Prevent mousemove spamming\n                // Chrome Bug: https://code.google.com/p/chromium/issues/detail?id=366970\n                if (e.screenX !== lastMoveX || e.screenY !== lastMoveY) {\n                    lastMoveX = e.screenX;\n                    lastMoveY = e.screenY;\n                    handleActivity();\n                }\n            };\n            const handleMouseDown = function () {\n                handleActivity();\n                // For as long as the they are touching the device or have their mouse down,\n                // we consider them active even if they're not moving their finger or mouse.\n                // So we want to continue to update that they are active\n                this.clearInterval(mouseInProgress);\n                // Setting userActivity=true now and setting the interval to the same time\n                // as the activityCheck interval (250) should ensure we never miss the\n                // next activityCheck\n                mouseInProgress = this.setInterval(handleActivity, 250);\n            };\n            const handleMouseUpAndMouseLeave = function (event) {\n                handleActivity();\n                // Stop the interval that maintains activity if the mouse/touch is down\n                this.clearInterval(mouseInProgress);\n            };\n\n            // Any mouse movement will be considered user activity\n            this.on('mousedown', handleMouseDown);\n            this.on('mousemove', handleMouseMove);\n            this.on('mouseup', handleMouseUpAndMouseLeave);\n            this.on('mouseleave', handleMouseUpAndMouseLeave);\n            const controlBar = this.getChild('controlBar');\n\n            // Fixes bug on Android & iOS where when tapping progressBar (when control bar is displayed)\n            // controlBar would no longer be hidden by default timeout.\n            if (controlBar && !IS_IOS && !IS_ANDROID) {\n                controlBar.on('mouseenter', function (event) {\n                    if (this.player().options_.inactivityTimeout !== 0) {\n                        this.player().cache_.inactivityTimeout = this.player().options_.inactivityTimeout;\n                    }\n                    this.player().options_.inactivityTimeout = 0;\n                });\n                controlBar.on('mouseleave', function (event) {\n                    this.player().options_.inactivityTimeout = this.player().cache_.inactivityTimeout;\n                });\n            }\n\n            // Listen for keyboard navigation\n            // Shouldn't need to use inProgress interval because of key repeat\n            this.on('keydown', handleActivity);\n            this.on('keyup', handleActivity);\n\n            // Run an interval every 250 milliseconds instead of stuffing everything into\n            // the mousemove/touchmove function itself, to prevent performance degradation.\n            // `this.reportUserActivity` simply sets this.userActivity_ to true, which\n            // then gets picked up by this loop\n            // http://ejohn.org/blog/learning-from-twitter/\n            let inactivityTimeout;\n            this.setInterval(function () {\n                // Check to see if mouse/touch activity has happened\n                if (!this.userActivity_) {\n                    return;\n                }\n\n                // Reset the activity tracker\n                this.userActivity_ = false;\n\n                // If the user state was inactive, set the state to active\n                this.userActive(true);\n\n                // Clear any existing inactivity timeout to start the timer over\n                this.clearTimeout(inactivityTimeout);\n                const timeout = this.options_.inactivityTimeout;\n                if (timeout <= 0) {\n                    return;\n                }\n\n                // In <timeout> milliseconds, if no more activity has occurred the\n                // user will be considered inactive\n                inactivityTimeout = this.setTimeout(function () {\n                    // Protect against the case where the inactivityTimeout can trigger just\n                    // before the next user activity is picked up by the activity check loop\n                    // causing a flicker\n                    if (!this.userActivity_) {\n                        this.userActive(false);\n                    }\n                }, timeout);\n            }, 250);\n        }\n\n        /**\n         * Gets or sets the current playback rate. A playback rate of\n         * 1.0 represents normal speed and 0.5 would indicate half-speed\n         * playback, for instance.\n         *\n         * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-playbackrate\n         *\n         * @param {number} [rate]\n         *       New playback rate to set.\n         *\n         * @return {number}\n         *         The current playback rate when getting or 1.0\n         */\n        playbackRate(rate) {\n            if (rate !== undefined) {\n                // NOTE: this.cache_.lastPlaybackRate is set from the tech handler\n                // that is registered above\n                this.techCall_('setPlaybackRate', rate);\n                return;\n            }\n            if (this.tech_ && this.tech_.featuresPlaybackRate) {\n                return this.cache_.lastPlaybackRate || this.techGet_('playbackRate');\n            }\n            return 1.0;\n        }\n\n        /**\n         * Gets or sets the current default playback rate. A default playback rate of\n         * 1.0 represents normal speed and 0.5 would indicate half-speed playback, for instance.\n         * defaultPlaybackRate will only represent what the initial playbackRate of a video was, not\n         * not the current playbackRate.\n         *\n         * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-defaultplaybackrate\n         *\n         * @param {number} [rate]\n         *       New default playback rate to set.\n         *\n         * @return {number|Player}\n         *         - The default playback rate when getting or 1.0\n         *         - the player when setting\n         */\n        defaultPlaybackRate(rate) {\n            if (rate !== undefined) {\n                return this.techCall_('setDefaultPlaybackRate', rate);\n            }\n            if (this.tech_ && this.tech_.featuresPlaybackRate) {\n                return this.techGet_('defaultPlaybackRate');\n            }\n            return 1.0;\n        }\n\n        /**\n         * Gets or sets the audio flag\n         *\n         * @param {boolean} bool\n         *        - true signals that this is an audio player\n         *        - false signals that this is not an audio player\n         *\n         * @return {boolean}\n         *         The current value of isAudio when getting\n         */\n        isAudio(bool) {\n            if (bool !== undefined) {\n                this.isAudio_ = !!bool;\n                return;\n            }\n            return !!this.isAudio_;\n        }\n        enableAudioOnlyUI_() {\n            // Update styling immediately to show the control bar so we can get its height\n            this.addClass('vjs-audio-only-mode');\n            const playerChildren = this.children();\n            const controlBar = this.getChild('ControlBar');\n            const controlBarHeight = controlBar && controlBar.currentHeight();\n\n            // Hide all player components except the control bar. Control bar components\n            // needed only for video are hidden with CSS\n            playerChildren.forEach(child => {\n                if (child === controlBar) {\n                    return;\n                }\n                if (child.el_ && !child.hasClass('vjs-hidden')) {\n                    child.hide();\n                    this.audioOnlyCache_.hiddenChildren.push(child);\n                }\n            });\n            this.audioOnlyCache_.playerHeight = this.currentHeight();\n\n            // Set the player height the same as the control bar\n            this.height(controlBarHeight);\n            this.trigger('audioonlymodechange');\n        }\n        disableAudioOnlyUI_() {\n            this.removeClass('vjs-audio-only-mode');\n\n            // Show player components that were previously hidden\n            this.audioOnlyCache_.hiddenChildren.forEach(child => child.show());\n\n            // Reset player height\n            this.height(this.audioOnlyCache_.playerHeight);\n            this.trigger('audioonlymodechange');\n        }\n\n        /**\n         * Get the current audioOnlyMode state or set audioOnlyMode to true or false.\n         *\n         * Setting this to `true` will hide all player components except the control bar,\n         * as well as control bar components needed only for video.\n         *\n         * @param {boolean} [value]\n         *         The value to set audioOnlyMode to.\n         *\n         * @return {Promise|boolean}\n         *        A Promise is returned when setting the state, and a boolean when getting\n         *        the present state\n         */\n        audioOnlyMode(value) {\n            if (typeof value !== 'boolean' || value === this.audioOnlyMode_) {\n                return this.audioOnlyMode_;\n            }\n            this.audioOnlyMode_ = value;\n\n            // Enable Audio Only Mode\n            if (value) {\n                const exitPromises = [];\n\n                // Fullscreen and PiP are not supported in audioOnlyMode, so exit if we need to.\n                if (this.isInPictureInPicture()) {\n                    exitPromises.push(this.exitPictureInPicture());\n                }\n                if (this.isFullscreen()) {\n                    exitPromises.push(this.exitFullscreen());\n                }\n                if (this.audioPosterMode()) {\n                    exitPromises.push(this.audioPosterMode(false));\n                }\n                return Promise.all(exitPromises).then(() => this.enableAudioOnlyUI_());\n            }\n\n            // Disable Audio Only Mode\n            return Promise.resolve().then(() => this.disableAudioOnlyUI_());\n        }\n        enablePosterModeUI_() {\n            // Hide the video element and show the poster image to enable posterModeUI\n            const tech = this.tech_ && this.tech_;\n            tech.hide();\n            this.addClass('vjs-audio-poster-mode');\n            this.trigger('audiopostermodechange');\n        }\n        disablePosterModeUI_() {\n            // Show the video element and hide the poster image to disable posterModeUI\n            const tech = this.tech_ && this.tech_;\n            tech.show();\n            this.removeClass('vjs-audio-poster-mode');\n            this.trigger('audiopostermodechange');\n        }\n\n        /**\n         * Get the current audioPosterMode state or set audioPosterMode to true or false\n         *\n         * @param {boolean} [value]\n         *         The value to set audioPosterMode to.\n         *\n         * @return {Promise|boolean}\n         *         A Promise is returned when setting the state, and a boolean when getting\n         *        the present state\n         */\n        audioPosterMode(value) {\n            if (typeof value !== 'boolean' || value === this.audioPosterMode_) {\n                return this.audioPosterMode_;\n            }\n            this.audioPosterMode_ = value;\n            if (value) {\n                if (this.audioOnlyMode()) {\n                    const audioOnlyModePromise = this.audioOnlyMode(false);\n                    return audioOnlyModePromise.then(() => {\n                        // enable audio poster mode after audio only mode is disabled\n                        this.enablePosterModeUI_();\n                    });\n                }\n                return Promise.resolve().then(() => {\n                    // enable audio poster mode\n                    this.enablePosterModeUI_();\n                });\n            }\n            return Promise.resolve().then(() => {\n                // disable audio poster mode\n                this.disablePosterModeUI_();\n            });\n        }\n\n        /**\n         * A helper method for adding a {@link TextTrack} to our\n         * {@link TextTrackList}.\n         *\n         * In addition to the W3C settings we allow adding additional info through options.\n         *\n         * @see http://www.w3.org/html/wg/drafts/html/master/embedded-content-0.html#dom-media-addtexttrack\n         *\n         * @param {string} [kind]\n         *        the kind of TextTrack you are adding\n         *\n         * @param {string} [label]\n         *        the label to give the TextTrack label\n         *\n         * @param {string} [language]\n         *        the language to set on the TextTrack\n         *\n         * @return {TextTrack|undefined}\n         *         the TextTrack that was added or undefined\n         *         if there is no tech\n         */\n        addTextTrack(kind, label, language) {\n            if (this.tech_) {\n                return this.tech_.addTextTrack(kind, label, language);\n            }\n        }\n\n        /**\n         * Create a remote {@link TextTrack} and an {@link HTMLTrackElement}.\n         *\n         * @param {Object} options\n         *        Options to pass to {@link HTMLTrackElement} during creation. See\n         *        {@link HTMLTrackElement} for object properties that you should use.\n         *\n         * @param {boolean} [manualCleanup=false] if set to true, the TextTrack will not be removed\n         *                                        from the TextTrackList and HtmlTrackElementList\n         *                                        after a source change\n         *\n         * @return { import('./tracks/html-track-element').default }\n         *         the HTMLTrackElement that was created and added\n         *         to the HtmlTrackElementList and the remote\n         *         TextTrackList\n         *\n         */\n        addRemoteTextTrack(options, manualCleanup) {\n            if (this.tech_) {\n                return this.tech_.addRemoteTextTrack(options, manualCleanup);\n            }\n        }\n\n        /**\n         * Remove a remote {@link TextTrack} from the respective\n         * {@link TextTrackList} and {@link HtmlTrackElementList}.\n         *\n         * @param {Object} track\n         *        Remote {@link TextTrack} to remove\n         *\n         * @return {undefined}\n         *         does not return anything\n         */\n        removeRemoteTextTrack(obj = {}) {\n            let {\n                track\n            } = obj;\n            if (!track) {\n                track = obj;\n            }\n\n            // destructure the input into an object with a track argument, defaulting to arguments[0]\n            // default the whole argument to an empty object if nothing was passed in\n\n            if (this.tech_) {\n                return this.tech_.removeRemoteTextTrack(track);\n            }\n        }\n\n        /**\n         * Gets available media playback quality metrics as specified by the W3C's Media\n         * Playback Quality API.\n         *\n         * @see [Spec]{@link https://wicg.github.io/media-playback-quality}\n         *\n         * @return {Object|undefined}\n         *         An object with supported media playback quality metrics or undefined if there\n         *         is no tech or the tech does not support it.\n         */\n        getVideoPlaybackQuality() {\n            return this.techGet_('getVideoPlaybackQuality');\n        }\n\n        /**\n         * Get video width\n         *\n         * @return {number}\n         *         current video width\n         */\n        videoWidth() {\n            return this.tech_ && this.tech_.videoWidth && this.tech_.videoWidth() || 0;\n        }\n\n        /**\n         * Get video height\n         *\n         * @return {number}\n         *         current video height\n         */\n        videoHeight() {\n            return this.tech_ && this.tech_.videoHeight && this.tech_.videoHeight() || 0;\n        }\n\n        /**\n         * The player's language code.\n         *\n         * Changing the language will trigger\n         * [languagechange]{@link Player#event:languagechange}\n         * which Components can use to update control text.\n         * ClickableComponent will update its control text by default on\n         * [languagechange]{@link Player#event:languagechange}.\n         *\n         * @fires Player#languagechange\n         *\n         * @param {string} [code]\n         *        the language code to set the player to\n         *\n         * @return {string}\n         *         The current language code when getting\n         */\n        language(code) {\n            if (code === undefined) {\n                return this.language_;\n            }\n            if (this.language_ !== String(code).toLowerCase()) {\n                this.language_ = String(code).toLowerCase();\n\n                // during first init, it's possible some things won't be evented\n                if (isEvented(this)) {\n                    /**\n                     * fires when the player language change\n                     *\n                     * @event Player#languagechange\n                     * @type {Event}\n                     */\n                    this.trigger('languagechange');\n                }\n            }\n        }\n\n        /**\n         * Get the player's language dictionary\n         * Merge every time, because a newly added plugin might call videojs.addLanguage() at any time\n         * Languages specified directly in the player options have precedence\n         *\n         * @return {Array}\n         *         An array of of supported languages\n         */\n        languages() {\n            return merge$2(Player.prototype.options_.languages, this.languages_);\n        }\n\n        /**\n         * returns a JavaScript object representing the current track\n         * information. **DOES not return it as JSON**\n         *\n         * @return {Object}\n         *         Object representing the current of track info\n         */\n        toJSON() {\n            const options = merge$2(this.options_);\n            const tracks = options.tracks;\n            options.tracks = [];\n            for (let i = 0; i < tracks.length; i++) {\n                let track = tracks[i];\n\n                // deep merge tracks and null out player so no circular references\n                track = merge$2(track);\n                track.player = undefined;\n                options.tracks[i] = track;\n            }\n            return options;\n        }\n\n        /**\n         * Creates a simple modal dialog (an instance of the {@link ModalDialog}\n         * component) that immediately overlays the player with arbitrary\n         * content and removes itself when closed.\n         *\n         * @param {string|Function|Element|Array|null} content\n         *        Same as {@link ModalDialog#content}'s param of the same name.\n         *        The most straight-forward usage is to provide a string or DOM\n         *        element.\n         *\n         * @param {Object} [options]\n         *        Extra options which will be passed on to the {@link ModalDialog}.\n         *\n         * @return {ModalDialog}\n         *         the {@link ModalDialog} that was created\n         */\n        createModal(content, options) {\n            options = options || {};\n            options.content = content || '';\n            const modal = new ModalDialog(this, options);\n            this.addChild(modal);\n            modal.on('dispose', () => {\n                this.removeChild(modal);\n            });\n            modal.open();\n            return modal;\n        }\n\n        /**\n         * Change breakpoint classes when the player resizes.\n         *\n         * @private\n         */\n        updateCurrentBreakpoint_() {\n            if (!this.responsive()) {\n                return;\n            }\n            const currentBreakpoint = this.currentBreakpoint();\n            const currentWidth = this.currentWidth();\n            for (let i = 0; i < BREAKPOINT_ORDER.length; i++) {\n                const candidateBreakpoint = BREAKPOINT_ORDER[i];\n                const maxWidth = this.breakpoints_[candidateBreakpoint];\n                if (currentWidth <= maxWidth) {\n                    // The current breakpoint did not change, nothing to do.\n                    if (currentBreakpoint === candidateBreakpoint) {\n                        return;\n                    }\n\n                    // Only remove a class if there is a current breakpoint.\n                    if (currentBreakpoint) {\n                        this.removeClass(BREAKPOINT_CLASSES[currentBreakpoint]);\n                    }\n                    this.addClass(BREAKPOINT_CLASSES[candidateBreakpoint]);\n                    this.breakpoint_ = candidateBreakpoint;\n                    break;\n                }\n            }\n        }\n\n        /**\n         * Removes the current breakpoint.\n         *\n         * @private\n         */\n        removeCurrentBreakpoint_() {\n            const className = this.currentBreakpointClass();\n            this.breakpoint_ = '';\n            if (className) {\n                this.removeClass(className);\n            }\n        }\n\n        /**\n         * Get or set breakpoints on the player.\n         *\n         * Calling this method with an object or `true` will remove any previous\n         * custom breakpoints and start from the defaults again.\n         *\n         * @param  {Object|boolean} [breakpoints]\n         *         If an object is given, it can be used to provide custom\n         *         breakpoints. If `true` is given, will set default breakpoints.\n         *         If this argument is not given, will simply return the current\n         *         breakpoints.\n         *\n         * @param  {number} [breakpoints.tiny]\n         *         The maximum width for the \"vjs-layout-tiny\" class.\n         *\n         * @param  {number} [breakpoints.xsmall]\n         *         The maximum width for the \"vjs-layout-x-small\" class.\n         *\n         * @param  {number} [breakpoints.small]\n         *         The maximum width for the \"vjs-layout-small\" class.\n         *\n         * @param  {number} [breakpoints.medium]\n         *         The maximum width for the \"vjs-layout-medium\" class.\n         *\n         * @param  {number} [breakpoints.large]\n         *         The maximum width for the \"vjs-layout-large\" class.\n         *\n         * @param  {number} [breakpoints.xlarge]\n         *         The maximum width for the \"vjs-layout-x-large\" class.\n         *\n         * @param  {number} [breakpoints.huge]\n         *         The maximum width for the \"vjs-layout-huge\" class.\n         *\n         * @return {Object}\n         *         An object mapping breakpoint names to maximum width values.\n         */\n        breakpoints(breakpoints) {\n            // Used as a getter.\n            if (breakpoints === undefined) {\n                return Object.assign(this.breakpoints_);\n            }\n            this.breakpoint_ = '';\n            this.breakpoints_ = Object.assign({}, DEFAULT_BREAKPOINTS, breakpoints);\n\n            // When breakpoint definitions change, we need to update the currently\n            // selected breakpoint.\n            this.updateCurrentBreakpoint_();\n\n            // Clone the breakpoints before returning.\n            return Object.assign(this.breakpoints_);\n        }\n\n        /**\n         * Get or set a flag indicating whether or not this player should adjust\n         * its UI based on its dimensions.\n         *\n         * @param  {boolean} value\n         *         Should be `true` if the player should adjust its UI based on its\n         *         dimensions; otherwise, should be `false`.\n         *\n         * @return {boolean}\n         *         Will be `true` if this player should adjust its UI based on its\n         *         dimensions; otherwise, will be `false`.\n         */\n        responsive(value) {\n            // Used as a getter.\n            if (value === undefined) {\n                return this.responsive_;\n            }\n            value = Boolean(value);\n            const current = this.responsive_;\n\n            // Nothing changed.\n            if (value === current) {\n                return;\n            }\n\n            // The value actually changed, set it.\n            this.responsive_ = value;\n\n            // Start listening for breakpoints and set the initial breakpoint if the\n            // player is now responsive.\n            if (value) {\n                this.on('playerresize', this.boundUpdateCurrentBreakpoint_);\n                this.updateCurrentBreakpoint_();\n\n                // Stop listening for breakpoints if the player is no longer responsive.\n            } else {\n                this.off('playerresize', this.boundUpdateCurrentBreakpoint_);\n                this.removeCurrentBreakpoint_();\n            }\n            return value;\n        }\n\n        /**\n         * Get current breakpoint name, if any.\n         *\n         * @return {string}\n         *         If there is currently a breakpoint set, returns a the key from the\n         *         breakpoints object matching it. Otherwise, returns an empty string.\n         */\n        currentBreakpoint() {\n            return this.breakpoint_;\n        }\n\n        /**\n         * Get the current breakpoint class name.\n         *\n         * @return {string}\n         *         The matching class name (e.g. `\"vjs-layout-tiny\"` or\n         *         `\"vjs-layout-large\"`) for the current breakpoint. Empty string if\n         *         there is no current breakpoint.\n         */\n        currentBreakpointClass() {\n            return BREAKPOINT_CLASSES[this.breakpoint_] || '';\n        }\n\n        /**\n         * An object that describes a single piece of media.\n         *\n         * Properties that are not part of this type description will be retained; so,\n         * this can be viewed as a generic metadata storage mechanism as well.\n         *\n         * @see      {@link https://wicg.github.io/mediasession/#the-mediametadata-interface}\n         * @typedef  {Object} Player~MediaObject\n         *\n         * @property {string} [album]\n         *           Unused, except if this object is passed to the `MediaSession`\n         *           API.\n         *\n         * @property {string} [artist]\n         *           Unused, except if this object is passed to the `MediaSession`\n         *           API.\n         *\n         * @property {Object[]} [artwork]\n         *           Unused, except if this object is passed to the `MediaSession`\n         *           API. If not specified, will be populated via the `poster`, if\n         *           available.\n         *\n         * @property {string} [poster]\n         *           URL to an image that will display before playback.\n         *\n         * @property {Tech~SourceObject|Tech~SourceObject[]|string} [src]\n         *           A single source object, an array of source objects, or a string\n         *           referencing a URL to a media source. It is _highly recommended_\n         *           that an object or array of objects is used here, so that source\n         *           selection algorithms can take the `type` into account.\n         *\n         * @property {string} [title]\n         *           Unused, except if this object is passed to the `MediaSession`\n         *           API.\n         *\n         * @property {Object[]} [textTracks]\n         *           An array of objects to be used to create text tracks, following\n         *           the {@link https://www.w3.org/TR/html50/embedded-content-0.html#the-track-element|native track element format}.\n         *           For ease of removal, these will be created as \"remote\" text\n         *           tracks and set to automatically clean up on source changes.\n         *\n         *           These objects may have properties like `src`, `kind`, `label`,\n         *           and `language`, see {@link Tech#createRemoteTextTrack}.\n         */\n\n        /**\n         * Populate the player using a {@link Player~MediaObject|MediaObject}.\n         *\n         * @param  {Player~MediaObject} media\n         *         A media object.\n         *\n         * @param  {Function} ready\n         *         A callback to be called when the player is ready.\n         */\n        loadMedia(media, ready) {\n            if (!media || typeof media !== 'object') {\n                return;\n            }\n            this.reset();\n\n            // Clone the media object so it cannot be mutated from outside.\n            this.cache_.media = merge$2(media);\n            const {\n                artist,\n                artwork,\n                description,\n                poster,\n                src,\n                textTracks,\n                title\n            } = this.cache_.media;\n\n            // If `artwork` is not given, create it using `poster`.\n            if (!artwork && poster) {\n                this.cache_.media.artwork = [{\n                    src: poster,\n                    type: getMimetype(poster)\n                }];\n            }\n            if (src) {\n                this.src(src);\n            }\n            if (poster) {\n                this.poster(poster);\n            }\n            if (Array.isArray(textTracks)) {\n                textTracks.forEach(tt => this.addRemoteTextTrack(tt, false));\n            }\n            if (this.titleBar) {\n                this.titleBar.update({\n                    title,\n                    description: description || artist || ''\n                });\n            }\n            this.ready(ready);\n        }\n\n        /**\n         * Get a clone of the current {@link Player~MediaObject} for this player.\n         *\n         * If the `loadMedia` method has not been used, will attempt to return a\n         * {@link Player~MediaObject} based on the current state of the player.\n         *\n         * @return {Player~MediaObject}\n         */\n        getMedia() {\n            if (!this.cache_.media) {\n                const poster = this.poster();\n                const src = this.currentSources();\n                const textTracks = Array.prototype.map.call(this.remoteTextTracks(), tt => ({\n                    kind: tt.kind,\n                    label: tt.label,\n                    language: tt.language,\n                    src: tt.src\n                }));\n                const media = {\n                    src,\n                    textTracks\n                };\n                if (poster) {\n                    media.poster = poster;\n                    media.artwork = [{\n                        src: media.poster,\n                        type: getMimetype(media.poster)\n                    }];\n                }\n                return media;\n            }\n            return merge$2(this.cache_.media);\n        }\n\n        /**\n         * Gets tag settings\n         *\n         * @param {Element} tag\n         *        The player tag\n         *\n         * @return {Object}\n         *         An object containing all of the settings\n         *         for a player tag\n         */\n        static getTagSettings(tag) {\n            const baseOptions = {\n                sources: [],\n                tracks: []\n            };\n            const tagOptions = getAttributes(tag);\n            const dataSetup = tagOptions['data-setup'];\n            if (hasClass(tag, 'vjs-fill')) {\n                tagOptions.fill = true;\n            }\n            if (hasClass(tag, 'vjs-fluid')) {\n                tagOptions.fluid = true;\n            }\n\n            // Check if data-setup attr exists.\n            if (dataSetup !== null) {\n                // Parse options JSON\n                // If empty string, make it a parsable json object.\n                const [err, data] = tuple(dataSetup || '{}');\n                if (err) {\n                    log$1.error(err);\n                }\n                Object.assign(tagOptions, data);\n            }\n            Object.assign(baseOptions, tagOptions);\n\n            // Get tag children settings\n            if (tag.hasChildNodes()) {\n                const children = tag.childNodes;\n                for (let i = 0, j = children.length; i < j; i++) {\n                    const child = children[i];\n                    // Change case needed: http://ejohn.org/blog/nodename-case-sensitivity/\n                    const childName = child.nodeName.toLowerCase();\n                    if (childName === 'source') {\n                        baseOptions.sources.push(getAttributes(child));\n                    } else if (childName === 'track') {\n                        baseOptions.tracks.push(getAttributes(child));\n                    }\n                }\n            }\n            return baseOptions;\n        }\n\n        /**\n         * Set debug mode to enable/disable logs at info level.\n         *\n         * @param {boolean} enabled\n         * @fires Player#debugon\n         * @fires Player#debugoff\n         */\n        debug(enabled) {\n            if (enabled === undefined) {\n                return this.debugEnabled_;\n            }\n            if (enabled) {\n                this.trigger('debugon');\n                this.previousLogLevel_ = this.log.level;\n                this.log.level('debug');\n                this.debugEnabled_ = true;\n            } else {\n                this.trigger('debugoff');\n                this.log.level(this.previousLogLevel_);\n                this.previousLogLevel_ = undefined;\n                this.debugEnabled_ = false;\n            }\n        }\n\n        /**\n         * Set or get current playback rates.\n         * Takes an array and updates the playback rates menu with the new items.\n         * Pass in an empty array to hide the menu.\n         * Values other than arrays are ignored.\n         *\n         * @fires Player#playbackrateschange\n         * @param {number[]} newRates\n         *                   The new rates that the playback rates menu should update to.\n         *                   An empty array will hide the menu\n         * @return {number[]} When used as a getter will return the current playback rates\n         */\n        playbackRates(newRates) {\n            if (newRates === undefined) {\n                return this.cache_.playbackRates;\n            }\n\n            // ignore any value that isn't an array\n            if (!Array.isArray(newRates)) {\n                return;\n            }\n\n            // ignore any arrays that don't only contain numbers\n            if (!newRates.every(rate => typeof rate === 'number')) {\n                return;\n            }\n            this.cache_.playbackRates = newRates;\n\n            /**\n             * fires when the playback rates in a player are changed\n             *\n             * @event Player#playbackrateschange\n             * @type {Event}\n             */\n            this.trigger('playbackrateschange');\n        }\n    }\n\n    /**\n     * Get the {@link VideoTrackList}\n     *\n     * @link https://html.spec.whatwg.org/multipage/embedded-content.html#videotracklist\n     *\n     * @return {VideoTrackList}\n     *         the current video track list\n     *\n     * @method Player.prototype.videoTracks\n     */\n\n    /**\n     * Get the {@link AudioTrackList}\n     *\n     * @link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotracklist\n     *\n     * @return {AudioTrackList}\n     *         the current audio track list\n     *\n     * @method Player.prototype.audioTracks\n     */\n\n    /**\n     * Get the {@link TextTrackList}\n     *\n     * @link http://www.w3.org/html/wg/drafts/html/master/embedded-content-0.html#dom-media-texttracks\n     *\n     * @return {TextTrackList}\n     *         the current text track list\n     *\n     * @method Player.prototype.textTracks\n     */\n\n    /**\n     * Get the remote {@link TextTrackList}\n     *\n     * @return {TextTrackList}\n     *         The current remote text track list\n     *\n     * @method Player.prototype.remoteTextTracks\n     */\n\n    /**\n     * Get the remote {@link HtmlTrackElementList} tracks.\n     *\n     * @return {HtmlTrackElementList}\n     *         The current remote text track element list\n     *\n     * @method Player.prototype.remoteTextTrackEls\n     */\n\n    ALL.names.forEach(function (name) {\n        const props = ALL[name];\n        Player.prototype[props.getterName] = function () {\n            if (this.tech_) {\n                return this.tech_[props.getterName]();\n            }\n\n            // if we have not yet loadTech_, we create {video,audio,text}Tracks_\n            // these will be passed to the tech during loading\n            this[props.privateName] = this[props.privateName] || new props.ListClass();\n            return this[props.privateName];\n        };\n    });\n\n    /**\n     * Get or set the `Player`'s crossorigin option. For the HTML5 player, this\n     * sets the `crossOrigin` property on the `<video>` tag to control the CORS\n     * behavior.\n     *\n     * @see [Video Element Attributes]{@link https://developer.mozilla.org/en-US/docs/Web/HTML/Element/video#attr-crossorigin}\n     *\n     * @param {string} [value]\n     *        The value to set the `Player`'s crossorigin to. If an argument is\n     *        given, must be one of `anonymous` or `use-credentials`.\n     *\n     * @return {string|undefined}\n     *         - The current crossorigin value of the `Player` when getting.\n     *         - undefined when setting\n     */\n    Player.prototype.crossorigin = Player.prototype.crossOrigin;\n\n    /**\n     * Global enumeration of players.\n     *\n     * The keys are the player IDs and the values are either the {@link Player}\n     * instance or `null` for disposed players.\n     *\n     * @type {Object}\n     */\n    Player.players = {};\n    const navigator = window.navigator;\n\n    /*\n   * Player instance options, surfaced using options\n   * options = Player.prototype.options_\n   * Make changes in options, not here.\n   *\n   * @type {Object}\n   * @private\n   */\n    Player.prototype.options_ = {\n        // Default order of fallback technology\n        techOrder: Tech.defaultTechOrder_,\n        html5: {},\n        // enable sourceset by default\n        enableSourceset: true,\n        // default inactivity timeout\n        inactivityTimeout: 2000,\n        // default playback rates\n        playbackRates: [],\n        // Add playback rate selection by adding rates\n        // 'playbackRates': [0.5, 1, 1.5, 2],\n        liveui: false,\n        // Included control sets\n        children: ['mediaLoader', 'posterImage', 'titleBar', 'textTrackDisplay', 'loadingSpinner', 'bigPlayButton', 'liveTracker', 'controlBar', 'errorDisplay', 'textTrackSettings', 'resizeManager'],\n        language: navigator && (navigator.languages && navigator.languages[0] || navigator.userLanguage || navigator.language) || 'en',\n        // locales and their language translations\n        languages: {},\n        // Default message to show when a video cannot be played.\n        notSupportedMessage: 'No compatible source was found for this media.',\n        normalizeAutoplay: false,\n        fullscreen: {\n            options: {\n                navigationUI: 'hide'\n            }\n        },\n        breakpoints: {},\n        responsive: false,\n        audioOnlyMode: false,\n        audioPosterMode: false\n    };\n    [\n        /**\n         * Returns whether or not the player is in the \"ended\" state.\n         *\n         * @return {Boolean} True if the player is in the ended state, false if not.\n         * @method Player#ended\n         */\n        'ended',\n        /**\n         * Returns whether or not the player is in the \"seeking\" state.\n         *\n         * @return {Boolean} True if the player is in the seeking state, false if not.\n         * @method Player#seeking\n         */\n        'seeking',\n        /**\n         * Returns the TimeRanges of the media that are currently available\n         * for seeking to.\n         *\n         * @return {TimeRanges} the seekable intervals of the media timeline\n         * @method Player#seekable\n         */\n        'seekable',\n        /**\n         * Returns the current state of network activity for the element, from\n         * the codes in the list below.\n         * - NETWORK_EMPTY (numeric value 0)\n         *   The element has not yet been initialised. All attributes are in\n         *   their initial states.\n         * - NETWORK_IDLE (numeric value 1)\n         *   The element's resource selection algorithm is active and has\n         *   selected a resource, but it is not actually using the network at\n         *   this time.\n         * - NETWORK_LOADING (numeric value 2)\n         *   The user agent is actively trying to download data.\n         * - NETWORK_NO_SOURCE (numeric value 3)\n         *   The element's resource selection algorithm is active, but it has\n         *   not yet found a resource to use.\n         *\n         * @see https://html.spec.whatwg.org/multipage/embedded-content.html#network-states\n         * @return {number} the current network activity state\n         * @method Player#networkState\n         */\n        'networkState',\n        /**\n         * Returns a value that expresses the current state of the element\n         * with respect to rendering the current playback position, from the\n         * codes in the list below.\n         * - HAVE_NOTHING (numeric value 0)\n         *   No information regarding the media resource is available.\n         * - HAVE_METADATA (numeric value 1)\n         *   Enough of the resource has been obtained that the duration of the\n         *   resource is available.\n         * - HAVE_CURRENT_DATA (numeric value 2)\n         *   Data for the immediate current playback position is available.\n         * - HAVE_FUTURE_DATA (numeric value 3)\n         *   Data for the immediate current playback position is available, as\n         *   well as enough data for the user agent to advance the current\n         *   playback position in the direction of playback.\n         * - HAVE_ENOUGH_DATA (numeric value 4)\n         *   The user agent estimates that enough data is available for\n         *   playback to proceed uninterrupted.\n         *\n         * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-readystate\n         * @return {number} the current playback rendering state\n         * @method Player#readyState\n         */\n        'readyState'].forEach(function (fn) {\n        Player.prototype[fn] = function () {\n            return this.techGet_(fn);\n        };\n    });\n    TECH_EVENTS_RETRIGGER.forEach(function (event) {\n        Player.prototype[`handleTech${toTitleCase$1(event)}_`] = function () {\n            return this.trigger(event);\n        };\n    });\n\n    /**\n     * Fired when the player has initial duration and dimension information\n     *\n     * @event Player#loadedmetadata\n     * @type {Event}\n     */\n\n    /**\n     * Fired when the player has downloaded data at the current playback position\n     *\n     * @event Player#loadeddata\n     * @type {Event}\n     */\n\n    /**\n     * Fired when the current playback position has changed *\n     * During playback this is fired every 15-250 milliseconds, depending on the\n     * playback technology in use.\n     *\n     * @event Player#timeupdate\n     * @type {Event}\n     */\n\n    /**\n     * Fired when the volume changes\n     *\n     * @event Player#volumechange\n     * @type {Event}\n     */\n\n    /**\n     * Reports whether or not a player has a plugin available.\n     *\n     * This does not report whether or not the plugin has ever been initialized\n     * on this player. For that, [usingPlugin]{@link Player#usingPlugin}.\n     *\n     * @method Player#hasPlugin\n     * @param  {string}  name\n     *         The name of a plugin.\n     *\n     * @return {boolean}\n     *         Whether or not this player has the requested plugin available.\n     */\n\n    /**\n     * Reports whether or not a player is using a plugin by name.\n     *\n     * For basic plugins, this only reports whether the plugin has _ever_ been\n     * initialized on this player.\n     *\n     * @method Player#usingPlugin\n     * @param  {string} name\n     *         The name of a plugin.\n     *\n     * @return {boolean}\n     *         Whether or not this player is using the requested plugin.\n     */\n\n    Component$1.registerComponent('Player', Player);\n\n    /**\n     * @file plugin.js\n     */\n\n    /**\n     * The base plugin name.\n     *\n     * @private\n     * @constant\n     * @type {string}\n     */\n    const BASE_PLUGIN_NAME = 'plugin';\n\n    /**\n     * The key on which a player's active plugins cache is stored.\n     *\n     * @private\n     * @constant\n     * @type     {string}\n     */\n    const PLUGIN_CACHE_KEY = 'activePlugins_';\n\n    /**\n     * Stores registered plugins in a private space.\n     *\n     * @private\n     * @type    {Object}\n     */\n    const pluginStorage = {};\n\n    /**\n     * Reports whether or not a plugin has been registered.\n     *\n     * @private\n     * @param   {string} name\n     *          The name of a plugin.\n     *\n     * @return {boolean}\n     *          Whether or not the plugin has been registered.\n     */\n    const pluginExists = name => pluginStorage.hasOwnProperty(name);\n\n    /**\n     * Get a single registered plugin by name.\n     *\n     * @private\n     * @param   {string} name\n     *          The name of a plugin.\n     *\n     * @return {typeof Plugin|Function|undefined}\n     *          The plugin (or undefined).\n     */\n    const getPlugin = name => pluginExists(name) ? pluginStorage[name] : undefined;\n\n    /**\n     * Marks a plugin as \"active\" on a player.\n     *\n     * Also, ensures that the player has an object for tracking active plugins.\n     *\n     * @private\n     * @param   {Player} player\n     *          A Video.js player instance.\n     *\n     * @param   {string} name\n     *          The name of a plugin.\n     */\n    const markPluginAsActive = (player, name) => {\n        player[PLUGIN_CACHE_KEY] = player[PLUGIN_CACHE_KEY] || {};\n        player[PLUGIN_CACHE_KEY][name] = true;\n    };\n\n    /**\n     * Triggers a pair of plugin setup events.\n     *\n     * @private\n     * @param  {Player} player\n     *         A Video.js player instance.\n     *\n     * @param  {Plugin~PluginEventHash} hash\n     *         A plugin event hash.\n     *\n     * @param  {boolean} [before]\n     *         If true, prefixes the event name with \"before\". In other words,\n     *         use this to trigger \"beforepluginsetup\" instead of \"pluginsetup\".\n     */\n    const triggerSetupEvent = (player, hash, before) => {\n        const eventName = (before ? 'before' : '') + 'pluginsetup';\n        player.trigger(eventName, hash);\n        player.trigger(eventName + ':' + hash.name, hash);\n    };\n\n    /**\n     * Takes a basic plugin function and returns a wrapper function which marks\n     * on the player that the plugin has been activated.\n     *\n     * @private\n     * @param   {string} name\n     *          The name of the plugin.\n     *\n     * @param   {Function} plugin\n     *          The basic plugin.\n     *\n     * @return {Function}\n     *          A wrapper function for the given plugin.\n     */\n    const createBasicPlugin = function (name, plugin) {\n        const basicPluginWrapper = function () {\n            // We trigger the \"beforepluginsetup\" and \"pluginsetup\" events on the player\n            // regardless, but we want the hash to be consistent with the hash provided\n            // for advanced plugins.\n            //\n            // The only potentially counter-intuitive thing here is the `instance` in\n            // the \"pluginsetup\" event is the value returned by the `plugin` function.\n            triggerSetupEvent(this, {\n                name,\n                plugin,\n                instance: null\n            }, true);\n            const instance = plugin.apply(this, arguments);\n            markPluginAsActive(this, name);\n            triggerSetupEvent(this, {\n                name,\n                plugin,\n                instance\n            });\n            return instance;\n        };\n        Object.keys(plugin).forEach(function (prop) {\n            basicPluginWrapper[prop] = plugin[prop];\n        });\n        return basicPluginWrapper;\n    };\n\n    /**\n     * Takes a plugin sub-class and returns a factory function for generating\n     * instances of it.\n     *\n     * This factory function will replace itself with an instance of the requested\n     * sub-class of Plugin.\n     *\n     * @private\n     * @param   {string} name\n     *          The name of the plugin.\n     *\n     * @param   {Plugin} PluginSubClass\n     *          The advanced plugin.\n     *\n     * @return {Function}\n     */\n    const createPluginFactory = (name, PluginSubClass) => {\n        // Add a `name` property to the plugin prototype so that each plugin can\n        // refer to itself by name.\n        PluginSubClass.prototype.name = name;\n        return function (...args) {\n            triggerSetupEvent(this, {\n                name,\n                plugin: PluginSubClass,\n                instance: null\n            }, true);\n            const instance = new PluginSubClass(...[this, ...args]);\n\n            // The plugin is replaced by a function that returns the current instance.\n            this[name] = () => instance;\n            triggerSetupEvent(this, instance.getEventHash());\n            return instance;\n        };\n    };\n\n    /**\n     * Parent class for all advanced plugins.\n     *\n     * @mixes   module:evented~EventedMixin\n     * @mixes   module:stateful~StatefulMixin\n     * @fires   Player#beforepluginsetup\n     * @fires   Player#beforepluginsetup:$name\n     * @fires   Player#pluginsetup\n     * @fires   Player#pluginsetup:$name\n     * @listens Player#dispose\n     * @throws  {Error}\n     *          If attempting to instantiate the base {@link Plugin} class\n     *          directly instead of via a sub-class.\n     */\n    class Plugin {\n        /**\n         * Creates an instance of this class.\n         *\n         * Sub-classes should call `super` to ensure plugins are properly initialized.\n         *\n         * @param {Player} player\n         *        A Video.js player instance.\n         */\n        constructor(player) {\n            if (this.constructor === Plugin) {\n                throw new Error('Plugin must be sub-classed; not directly instantiated.');\n            }\n            this.player = player;\n            if (!this.log) {\n                this.log = this.player.log.createLogger(this.name);\n            }\n\n            // Make this object evented, but remove the added `trigger` method so we\n            // use the prototype version instead.\n            evented(this);\n            delete this.trigger;\n            stateful(this, this.constructor.defaultState);\n            markPluginAsActive(player, this.name);\n\n            // Auto-bind the dispose method so we can use it as a listener and unbind\n            // it later easily.\n            this.dispose = this.dispose.bind(this);\n\n            // If the player is disposed, dispose the plugin.\n            player.on('dispose', this.dispose);\n        }\n\n        /**\n         * Get the version of the plugin that was set on <pluginName>.VERSION\n         */\n        version() {\n            return this.constructor.VERSION;\n        }\n\n        /**\n         * Each event triggered by plugins includes a hash of additional data with\n         * conventional properties.\n         *\n         * This returns that object or mutates an existing hash.\n         *\n         * @param   {Object} [hash={}]\n         *          An object to be used as event an event hash.\n         *\n         * @return {Plugin~PluginEventHash}\n         *          An event hash object with provided properties mixed-in.\n         */\n        getEventHash(hash = {}) {\n            hash.name = this.name;\n            hash.plugin = this.constructor;\n            hash.instance = this;\n            return hash;\n        }\n\n        /**\n         * Triggers an event on the plugin object and overrides\n         * {@link module:evented~EventedMixin.trigger|EventedMixin.trigger}.\n         *\n         * @param   {string|Object} event\n         *          An event type or an object with a type property.\n         *\n         * @param   {Object} [hash={}]\n         *          Additional data hash to merge with a\n         *          {@link Plugin~PluginEventHash|PluginEventHash}.\n         *\n         * @return {boolean}\n         *          Whether or not default was prevented.\n         */\n        trigger(event, hash = {}) {\n            return trigger(this.eventBusEl_, event, this.getEventHash(hash));\n        }\n\n        /**\n         * Handles \"statechanged\" events on the plugin. No-op by default, override by\n         * subclassing.\n         *\n         * @abstract\n         * @param    {Event} e\n         *           An event object provided by a \"statechanged\" event.\n         *\n         * @param    {Object} e.changes\n         *           An object describing changes that occurred with the \"statechanged\"\n         *           event.\n         */\n        handleStateChanged(e) {}\n\n        /**\n         * Disposes a plugin.\n         *\n         * Subclasses can override this if they want, but for the sake of safety,\n         * it's probably best to subscribe the \"dispose\" event.\n         *\n         * @fires Plugin#dispose\n         */\n        dispose() {\n            const {\n                name,\n                player\n            } = this;\n\n            /**\n             * Signals that a advanced plugin is about to be disposed.\n             *\n             * @event Plugin#dispose\n             * @type  {Event}\n             */\n            this.trigger('dispose');\n            this.off();\n            player.off('dispose', this.dispose);\n\n            // Eliminate any possible sources of leaking memory by clearing up\n            // references between the player and the plugin instance and nulling out\n            // the plugin's state and replacing methods with a function that throws.\n            player[PLUGIN_CACHE_KEY][name] = false;\n            this.player = this.state = null;\n\n            // Finally, replace the plugin name on the player with a new factory\n            // function, so that the plugin is ready to be set up again.\n            player[name] = createPluginFactory(name, pluginStorage[name]);\n        }\n\n        /**\n         * Determines if a plugin is a basic plugin (i.e. not a sub-class of `Plugin`).\n         *\n         * @param   {string|Function} plugin\n         *          If a string, matches the name of a plugin. If a function, will be\n         *          tested directly.\n         *\n         * @return {boolean}\n         *          Whether or not a plugin is a basic plugin.\n         */\n        static isBasic(plugin) {\n            const p = typeof plugin === 'string' ? getPlugin(plugin) : plugin;\n            return typeof p === 'function' && !Plugin.prototype.isPrototypeOf(p.prototype);\n        }\n\n        /**\n         * Register a Video.js plugin.\n         *\n         * @param   {string} name\n         *          The name of the plugin to be registered. Must be a string and\n         *          must not match an existing plugin or a method on the `Player`\n         *          prototype.\n         *\n         * @param   {typeof Plugin|Function} plugin\n         *          A sub-class of `Plugin` or a function for basic plugins.\n         *\n         * @return {typeof Plugin|Function}\n         *          For advanced plugins, a factory function for that plugin. For\n         *          basic plugins, a wrapper function that initializes the plugin.\n         */\n        static registerPlugin(name, plugin) {\n            if (typeof name !== 'string') {\n                throw new Error(`Illegal plugin name, \"${name}\", must be a string, was ${typeof name}.`);\n            }\n            if (pluginExists(name)) {\n                log$1.warn(`A plugin named \"${name}\" already exists. You may want to avoid re-registering plugins!`);\n            } else if (Player.prototype.hasOwnProperty(name)) {\n                throw new Error(`Illegal plugin name, \"${name}\", cannot share a name with an existing player method!`);\n            }\n            if (typeof plugin !== 'function') {\n                throw new Error(`Illegal plugin for \"${name}\", must be a function, was ${typeof plugin}.`);\n            }\n            pluginStorage[name] = plugin;\n\n            // Add a player prototype method for all sub-classed plugins (but not for\n            // the base Plugin class).\n            if (name !== BASE_PLUGIN_NAME) {\n                if (Plugin.isBasic(plugin)) {\n                    Player.prototype[name] = createBasicPlugin(name, plugin);\n                } else {\n                    Player.prototype[name] = createPluginFactory(name, plugin);\n                }\n            }\n            return plugin;\n        }\n\n        /**\n         * De-register a Video.js plugin.\n         *\n         * @param  {string} name\n         *         The name of the plugin to be de-registered. Must be a string that\n         *         matches an existing plugin.\n         *\n         * @throws {Error}\n         *         If an attempt is made to de-register the base plugin.\n         */\n        static deregisterPlugin(name) {\n            if (name === BASE_PLUGIN_NAME) {\n                throw new Error('Cannot de-register base plugin.');\n            }\n            if (pluginExists(name)) {\n                delete pluginStorage[name];\n                delete Player.prototype[name];\n            }\n        }\n\n        /**\n         * Gets an object containing multiple Video.js plugins.\n         *\n         * @param   {Array} [names]\n         *          If provided, should be an array of plugin names. Defaults to _all_\n         *          plugin names.\n         *\n         * @return {Object|undefined}\n         *          An object containing plugin(s) associated with their name(s) or\n         *          `undefined` if no matching plugins exist).\n         */\n        static getPlugins(names = Object.keys(pluginStorage)) {\n            let result;\n            names.forEach(name => {\n                const plugin = getPlugin(name);\n                if (plugin) {\n                    result = result || {};\n                    result[name] = plugin;\n                }\n            });\n            return result;\n        }\n\n        /**\n         * Gets a plugin's version, if available\n         *\n         * @param   {string} name\n         *          The name of a plugin.\n         *\n         * @return {string}\n         *          The plugin's version or an empty string.\n         */\n        static getPluginVersion(name) {\n            const plugin = getPlugin(name);\n            return plugin && plugin.VERSION || '';\n        }\n    }\n\n    /**\n     * Gets a plugin by name if it exists.\n     *\n     * @static\n     * @method   getPlugin\n     * @memberOf Plugin\n     * @param    {string} name\n     *           The name of a plugin.\n     *\n     * @returns  {typeof Plugin|Function|undefined}\n     *           The plugin (or `undefined`).\n     */\n    Plugin.getPlugin = getPlugin;\n\n    /**\n     * The name of the base plugin class as it is registered.\n     *\n     * @type {string}\n     */\n    Plugin.BASE_PLUGIN_NAME = BASE_PLUGIN_NAME;\n    Plugin.registerPlugin(BASE_PLUGIN_NAME, Plugin);\n\n    /**\n     * Documented in player.js\n     *\n     * @ignore\n     */\n    Player.prototype.usingPlugin = function (name) {\n        return !!this[PLUGIN_CACHE_KEY] && this[PLUGIN_CACHE_KEY][name] === true;\n    };\n\n    /**\n     * Documented in player.js\n     *\n     * @ignore\n     */\n    Player.prototype.hasPlugin = function (name) {\n        return !!pluginExists(name);\n    };\n\n    /**\n     * Signals that a plugin is about to be set up on a player.\n     *\n     * @event    Player#beforepluginsetup\n     * @type     {Plugin~PluginEventHash}\n     */\n\n    /**\n     * Signals that a plugin is about to be set up on a player - by name. The name\n     * is the name of the plugin.\n     *\n     * @event    Player#beforepluginsetup:$name\n     * @type     {Plugin~PluginEventHash}\n     */\n\n    /**\n     * Signals that a plugin has just been set up on a player.\n     *\n     * @event    Player#pluginsetup\n     * @type     {Plugin~PluginEventHash}\n     */\n\n    /**\n     * Signals that a plugin has just been set up on a player - by name. The name\n     * is the name of the plugin.\n     *\n     * @event    Player#pluginsetup:$name\n     * @type     {Plugin~PluginEventHash}\n     */\n\n    /**\n     * @typedef  {Object} Plugin~PluginEventHash\n     *\n     * @property {string} instance\n     *           For basic plugins, the return value of the plugin function. For\n     *           advanced plugins, the plugin instance on which the event is fired.\n     *\n     * @property {string} name\n     *           The name of the plugin.\n     *\n     * @property {string} plugin\n     *           For basic plugins, the plugin function. For advanced plugins, the\n     *           plugin class/constructor.\n     */\n\n    /**\n     * @file deprecate.js\n     * @module deprecate\n     */\n\n    /**\n     * Decorate a function with a deprecation message the first time it is called.\n     *\n     * @param  {string}   message\n     *         A deprecation message to log the first time the returned function\n     *         is called.\n     *\n     * @param  {Function} fn\n     *         The function to be deprecated.\n     *\n     * @return {Function}\n     *         A wrapper function that will log a deprecation warning the first\n     *         time it is called. The return value will be the return value of\n     *         the wrapped function.\n     */\n    function deprecate(message, fn) {\n        let warned = false;\n        return function (...args) {\n            if (!warned) {\n                log$1.warn(message);\n            }\n            warned = true;\n            return fn.apply(this, args);\n        };\n    }\n\n    /**\n     * Internal function used to mark a function as deprecated in the next major\n     * version with consistent messaging.\n     *\n     * @param  {number}   major   The major version where it will be removed\n     * @param  {string}   oldName The old function name\n     * @param  {string}   newName The new function name\n     * @param  {Function} fn      The function to deprecate\n     * @return {Function}         The decorated function\n     */\n    function deprecateForMajor(major, oldName, newName, fn) {\n        return deprecate(`${oldName} is deprecated and will be removed in ${major}.0; please use ${newName} instead.`, fn);\n    }\n\n    /**\n     * @file video.js\n     * @module videojs\n     */\n\n    /**\n     * Normalize an `id` value by trimming off a leading `#`\n     *\n     * @private\n     * @param   {string} id\n     *          A string, maybe with a leading `#`.\n     *\n     * @return {string}\n     *          The string, without any leading `#`.\n     */\n    const normalizeId = id => id.indexOf('#') === 0 ? id.slice(1) : id;\n\n    /**\n     * A callback that is called when a component is ready. Does not have any\n     * parameters and any callback value will be ignored. See: {@link Component~ReadyCallback}\n     *\n     * @callback ReadyCallback\n     */\n\n    /**\n     * The `videojs()` function doubles as the main function for users to create a\n     * {@link Player} instance as well as the main library namespace.\n     *\n     * It can also be used as a getter for a pre-existing {@link Player} instance.\n     * However, we _strongly_ recommend using `videojs.getPlayer()` for this\n     * purpose because it avoids any potential for unintended initialization.\n     *\n     * Due to [limitations](https://github.com/jsdoc3/jsdoc/issues/955#issuecomment-313829149)\n     * of our JSDoc template, we cannot properly document this as both a function\n     * and a namespace, so its function signature is documented here.\n     *\n     * #### Arguments\n     * ##### id\n     * string|Element, **required**\n     *\n     * Video element or video element ID.\n     *\n     * ##### options\n     * Object, optional\n     *\n     * Options object for providing settings.\n     * See: [Options Guide](https://docs.videojs.com/tutorial-options.html).\n     *\n     * ##### ready\n     * {@link Component~ReadyCallback}, optional\n     *\n     * A function to be called when the {@link Player} and {@link Tech} are ready.\n     *\n     * #### Return Value\n     *\n     * The `videojs()` function returns a {@link Player} instance.\n     *\n     * @namespace\n     *\n     * @borrows AudioTrack as AudioTrack\n     * @borrows Component.getComponent as getComponent\n     * @borrows module:events.on as on\n     * @borrows module:events.one as one\n     * @borrows module:events.off as off\n     * @borrows module:events.trigger as trigger\n     * @borrows EventTarget as EventTarget\n     * @borrows module:middleware.use as use\n     * @borrows Player.players as players\n     * @borrows Plugin.registerPlugin as registerPlugin\n     * @borrows Plugin.deregisterPlugin as deregisterPlugin\n     * @borrows Plugin.getPlugins as getPlugins\n     * @borrows Plugin.getPlugin as getPlugin\n     * @borrows Plugin.getPluginVersion as getPluginVersion\n     * @borrows Tech.getTech as getTech\n     * @borrows Tech.registerTech as registerTech\n     * @borrows TextTrack as TextTrack\n     * @borrows VideoTrack as VideoTrack\n     *\n     * @param  {string|Element} id\n     *         Video element or video element ID.\n     *\n     * @param  {Object} [options]\n     *         Options object for providing settings.\n     *         See: [Options Guide](https://docs.videojs.com/tutorial-options.html).\n     *\n     * @param  {ReadyCallback} [ready]\n     *         A function to be called when the {@link Player} and {@link Tech} are\n     *         ready.\n     *\n     * @return {Player}\n     *         The `videojs()` function returns a {@link Player|Player} instance.\n     */\n    function videojs(id, options, ready) {\n        let player = videojs.getPlayer(id);\n        if (player) {\n            if (options) {\n                log$1.warn(`Player \"${id}\" is already initialised. Options will not be applied.`);\n            }\n            if (ready) {\n                player.ready(ready);\n            }\n            return player;\n        }\n        const el = typeof id === 'string' ? $('#' + normalizeId(id)) : id;\n        if (!isEl(el)) {\n            throw new TypeError('The element or ID supplied is not valid. (videojs)');\n        }\n\n        // document.body.contains(el) will only check if el is contained within that one document.\n        // This causes problems for elements in iframes.\n        // Instead, use the element's ownerDocument instead of the global document.\n        // This will make sure that the element is indeed in the dom of that document.\n        // Additionally, check that the document in question has a default view.\n        // If the document is no longer attached to the dom, the defaultView of the document will be null.\n        if (!el.ownerDocument.defaultView || !el.ownerDocument.body.contains(el)) {\n            log$1.warn('The element supplied is not included in the DOM');\n        }\n        options = options || {};\n\n        // Store a copy of the el before modification, if it is to be restored in destroy()\n        // If div ingest, store the parent div\n        if (options.restoreEl === true) {\n            options.restoreEl = (el.parentNode && el.parentNode.hasAttribute('data-vjs-player') ? el.parentNode : el).cloneNode(true);\n        }\n        hooks('beforesetup').forEach(hookFunction => {\n            const opts = hookFunction(el, merge$2(options));\n            if (!isObject$1(opts) || Array.isArray(opts)) {\n                log$1.error('please return an object in beforesetup hooks');\n                return;\n            }\n            options = merge$2(options, opts);\n        });\n\n        // We get the current \"Player\" component here in case an integration has\n        // replaced it with a custom player.\n        const PlayerComponent = Component$1.getComponent('Player');\n        player = new PlayerComponent(el, options, ready);\n        hooks('setup').forEach(hookFunction => hookFunction(player));\n        return player;\n    }\n    videojs.hooks_ = hooks_;\n    videojs.hooks = hooks;\n    videojs.hook = hook;\n    videojs.hookOnce = hookOnce;\n    videojs.removeHook = removeHook;\n\n    // Add default styles\n    if (window.VIDEOJS_NO_DYNAMIC_STYLE !== true && isReal()) {\n        let style = $('.vjs-styles-defaults');\n        if (!style) {\n            style = createStyleElement('vjs-styles-defaults');\n            const head = $('head');\n            if (head) {\n                head.insertBefore(style, head.firstChild);\n            }\n            setTextContent(style, `\n      .video-js {\n        width: 300px;\n        height: 150px;\n      }\n\n      .vjs-fluid:not(.vjs-audio-only-mode) {\n        padding-top: 56.25%\n      }\n    `);\n        }\n    }\n\n    // Run Auto-load players\n    // You have to wait at least once in case this script is loaded after your\n    // video in the DOM (weird behavior only with minified version)\n    autoSetupTimeout(1, videojs);\n\n    /**\n     * Current Video.js version. Follows [semantic versioning](https://semver.org/).\n     *\n     * @type {string}\n     */\n    videojs.VERSION = version$5;\n\n    /**\n     * The global options object. These are the settings that take effect\n     * if no overrides are specified when the player is created.\n     *\n     * @type {Object}\n     */\n    videojs.options = Player.prototype.options_;\n\n    /**\n     * Get an object with the currently created players, keyed by player ID\n     *\n     * @return {Object}\n     *         The created players\n     */\n    videojs.getPlayers = () => Player.players;\n\n    /**\n     * Get a single player based on an ID or DOM element.\n     *\n     * This is useful if you want to check if an element or ID has an associated\n     * Video.js player, but not create one if it doesn't.\n     *\n     * @param   {string|Element} id\n     *          An HTML element - `<video>`, `<audio>`, or `<video-js>` -\n     *          or a string matching the `id` of such an element.\n     *\n     * @return {Player|undefined}\n     *          A player instance or `undefined` if there is no player instance\n     *          matching the argument.\n     */\n    videojs.getPlayer = id => {\n        const players = Player.players;\n        let tag;\n        if (typeof id === 'string') {\n            const nId = normalizeId(id);\n            const player = players[nId];\n            if (player) {\n                return player;\n            }\n            tag = $('#' + nId);\n        } else {\n            tag = id;\n        }\n        if (isEl(tag)) {\n            const {\n                player,\n                playerId\n            } = tag;\n\n            // Element may have a `player` property referring to an already created\n            // player instance. If so, return that.\n            if (player || players[playerId]) {\n                return player || players[playerId];\n            }\n        }\n    };\n\n    /**\n     * Returns an array of all current players.\n     *\n     * @return {Array}\n     *         An array of all players. The array will be in the order that\n     *         `Object.keys` provides, which could potentially vary between\n     *         JavaScript engines.\n     *\n     */\n    videojs.getAllPlayers = () =>\n        // Disposed players leave a key with a `null` value, so we need to make sure\n        // we filter those out.\n        Object.keys(Player.players).map(k => Player.players[k]).filter(Boolean);\n    videojs.players = Player.players;\n    videojs.getComponent = Component$1.getComponent;\n\n    /**\n     * Register a component so it can referred to by name. Used when adding to other\n     * components, either through addChild `component.addChild('myComponent')` or through\n     * default children options  `{ children: ['myComponent'] }`.\n     *\n     * > NOTE: You could also just initialize the component before adding.\n     * `component.addChild(new MyComponent());`\n     *\n     * @param {string} name\n     *        The class name of the component\n     *\n     * @param {Component} comp\n     *        The component class\n     *\n     * @return {Component}\n     *         The newly registered component\n     */\n    videojs.registerComponent = (name, comp) => {\n        if (Tech.isTech(comp)) {\n            log$1.warn(`The ${name} tech was registered as a component. It should instead be registered using videojs.registerTech(name, tech)`);\n        }\n        Component$1.registerComponent.call(Component$1, name, comp);\n    };\n    videojs.getTech = Tech.getTech;\n    videojs.registerTech = Tech.registerTech;\n    videojs.use = use;\n\n    /**\n     * An object that can be returned by a middleware to signify\n     * that the middleware is being terminated.\n     *\n     * @type {object}\n     * @property {object} middleware.TERMINATOR\n     */\n    Object.defineProperty(videojs, 'middleware', {\n        value: {},\n        writeable: false,\n        enumerable: true\n    });\n    Object.defineProperty(videojs.middleware, 'TERMINATOR', {\n        value: TERMINATOR,\n        writeable: false,\n        enumerable: true\n    });\n\n    /**\n     * A reference to the {@link module:browser|browser utility module} as an object.\n     *\n     * @type {Object}\n     * @see  {@link module:browser|browser}\n     */\n    videojs.browser = browser;\n\n    /**\n     * A reference to the {@link module:obj|obj utility module} as an object.\n     *\n     * @type {Object}\n     * @see  {@link module:obj|obj}\n     */\n    videojs.obj = Obj;\n\n    /**\n     * Deprecated reference to the {@link module:obj.merge|merge function}\n     *\n     * @type {Function}\n     * @see {@link module:obj.merge|merge}\n     * @deprecated Deprecated and will be removed in 9.0. Please use videojs.obj.merge instead.\n     */\n    videojs.mergeOptions = deprecateForMajor(9, 'videojs.mergeOptions', 'videojs.obj.merge', merge$2);\n\n    /**\n     * Deprecated reference to the {@link module:obj.defineLazyProperty|defineLazyProperty function}\n     *\n     * @type {Function}\n     * @see {@link module:obj.defineLazyProperty|defineLazyProperty}\n     * @deprecated Deprecated and will be removed in 9.0. Please use videojs.obj.defineLazyProperty instead.\n     */\n    videojs.defineLazyProperty = deprecateForMajor(9, 'videojs.defineLazyProperty', 'videojs.obj.defineLazyProperty', defineLazyProperty);\n\n    /**\n     * Deprecated reference to the {@link module:fn.bind_|fn.bind_ function}\n     *\n     * @type {Function}\n     * @see {@link module:fn.bind_|fn.bind_}\n     * @deprecated Deprecated and will be removed in 9.0. Please use native Function.prototype.bind instead.\n     */\n    videojs.bind = deprecateForMajor(9, 'videojs.bind', 'native Function.prototype.bind', bind_);\n    videojs.registerPlugin = Plugin.registerPlugin;\n    videojs.deregisterPlugin = Plugin.deregisterPlugin;\n\n    /**\n     * Deprecated method to register a plugin with Video.js\n     *\n     * @deprecated Deprecated and will be removed in 9.0. Use videojs.registerPlugin() instead.\n     *\n     * @param {string} name\n     *        The plugin name\n     *\n     * @param {Plugin|Function} plugin\n     *         The plugin sub-class or function\n     */\n    videojs.plugin = (name, plugin) => {\n        log$1.warn('videojs.plugin() is deprecated; use videojs.registerPlugin() instead');\n        return Plugin.registerPlugin(name, plugin);\n    };\n    videojs.getPlugins = Plugin.getPlugins;\n    videojs.getPlugin = Plugin.getPlugin;\n    videojs.getPluginVersion = Plugin.getPluginVersion;\n\n    /**\n     * Adding languages so that they're available to all players.\n     * Example: `videojs.addLanguage('es', { 'Hello': 'Hola' });`\n     *\n     * @param {string} code\n     *        The language code or dictionary property\n     *\n     * @param {Object} data\n     *        The data values to be translated\n     *\n     * @return {Object}\n     *         The resulting language dictionary object\n     */\n    videojs.addLanguage = function (code, data) {\n        code = ('' + code).toLowerCase();\n        videojs.options.languages = merge$2(videojs.options.languages, {\n            [code]: data\n        });\n        return videojs.options.languages[code];\n    };\n\n    /**\n     * A reference to the {@link module:log|log utility module} as an object.\n     *\n     * @type {Function}\n     * @see  {@link module:log|log}\n     */\n    videojs.log = log$1;\n    videojs.createLogger = createLogger;\n\n    /**\n     * A reference to the {@link module:time|time utility module} as an object.\n     *\n     * @type {Object}\n     * @see {@link module:time|time}\n     */\n    videojs.time = Time;\n\n    /**\n     * Deprecated reference to the {@link module:time.createTimeRanges|createTimeRanges function}\n     *\n     * @type {Function}\n     * @see {@link module:time.createTimeRanges|createTimeRanges}\n     * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.createTimeRanges instead.\n     */\n    videojs.createTimeRange = deprecateForMajor(9, 'videojs.createTimeRange', 'videojs.time.createTimeRanges', createTimeRanges$1);\n\n    /**\n     * Deprecated reference to the {@link module:time.createTimeRanges|createTimeRanges function}\n     *\n     * @type {Function}\n     * @see {@link module:time.createTimeRanges|createTimeRanges}\n     * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.createTimeRanges instead.\n     */\n    videojs.createTimeRanges = deprecateForMajor(9, 'videojs.createTimeRanges', 'videojs.time.createTimeRanges', createTimeRanges$1);\n\n    /**\n     * Deprecated reference to the {@link module:time.formatTime|formatTime function}\n     *\n     * @type {Function}\n     * @see {@link module:time.formatTime|formatTime}\n     * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.format instead.\n     */\n    videojs.formatTime = deprecateForMajor(9, 'videojs.formatTime', 'videojs.time.formatTime', formatTime);\n\n    /**\n     * Deprecated reference to the {@link module:time.setFormatTime|setFormatTime function}\n     *\n     * @type {Function}\n     * @see {@link module:time.setFormatTime|setFormatTime}\n     * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.setFormat instead.\n     */\n    videojs.setFormatTime = deprecateForMajor(9, 'videojs.setFormatTime', 'videojs.time.setFormatTime', setFormatTime);\n\n    /**\n     * Deprecated reference to the {@link module:time.resetFormatTime|resetFormatTime function}\n     *\n     * @type {Function}\n     * @see {@link module:time.resetFormatTime|resetFormatTime}\n     * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.resetFormat instead.\n     */\n    videojs.resetFormatTime = deprecateForMajor(9, 'videojs.resetFormatTime', 'videojs.time.resetFormatTime', resetFormatTime);\n\n    /**\n     * Deprecated reference to the {@link module:url.parseUrl|Url.parseUrl function}\n     *\n     * @type {Function}\n     * @see {@link module:url.parseUrl|parseUrl}\n     * @deprecated Deprecated and will be removed in 9.0. Please use videojs.url.parseUrl instead.\n     */\n    videojs.parseUrl = deprecateForMajor(9, 'videojs.parseUrl', 'videojs.url.parseUrl', parseUrl);\n\n    /**\n     * Deprecated reference to the {@link module:url.isCrossOrigin|Url.isCrossOrigin function}\n     *\n     * @type {Function}\n     * @see {@link module:url.isCrossOrigin|isCrossOrigin}\n     * @deprecated Deprecated and will be removed in 9.0. Please use videojs.url.isCrossOrigin instead.\n     */\n    videojs.isCrossOrigin = deprecateForMajor(9, 'videojs.isCrossOrigin', 'videojs.url.isCrossOrigin', isCrossOrigin);\n    videojs.EventTarget = EventTarget$2;\n    videojs.any = any;\n    videojs.on = on;\n    videojs.one = one;\n    videojs.off = off;\n    videojs.trigger = trigger;\n\n    /**\n     * A cross-browser XMLHttpRequest wrapper.\n     *\n     * @function\n     * @param    {Object} options\n     *           Settings for the request.\n     *\n     * @return   {XMLHttpRequest|XDomainRequest}\n     *           The request object.\n     *\n     * @see      https://github.com/Raynos/xhr\n     */\n    videojs.xhr = lib;\n    videojs.TextTrack = TextTrack;\n    videojs.AudioTrack = AudioTrack;\n    videojs.VideoTrack = VideoTrack;\n    ['isEl', 'isTextNode', 'createEl', 'hasClass', 'addClass', 'removeClass', 'toggleClass', 'setAttributes', 'getAttributes', 'emptyEl', 'appendContent', 'insertContent'].forEach(k => {\n        videojs[k] = function () {\n            log$1.warn(`videojs.${k}() is deprecated; use videojs.dom.${k}() instead`);\n            return Dom[k].apply(null, arguments);\n        };\n    });\n    videojs.computedStyle = deprecateForMajor(9, 'videojs.computedStyle', 'videojs.dom.computedStyle', computedStyle);\n\n    /**\n     * A reference to the {@link module:dom|DOM utility module} as an object.\n     *\n     * @type {Object}\n     * @see {@link module:dom|dom}\n     */\n    videojs.dom = Dom;\n\n    /**\n     * A reference to the {@link module:fn|fn utility module} as an object.\n     *\n     * @type {Object}\n     * @see {@link module:fn|fn}\n     */\n    videojs.fn = Fn;\n\n    /**\n     * A reference to the {@link module:num|num utility module} as an object.\n     *\n     * @type {Object}\n     * @see {@link module:num|num}\n     */\n    videojs.num = Num;\n\n    /**\n     * A reference to the {@link module:str|str utility module} as an object.\n     *\n     * @type {Object}\n     * @see {@link module:str|str}\n     */\n    videojs.str = Str;\n\n    /**\n     * A reference to the {@link module:url|URL utility module} as an object.\n     *\n     * @type {Object}\n     * @see {@link module:url|url}\n     */\n    videojs.url = Url;\n\n    createCommonjsModule(function (module, exports) {\n        /*! @name videojs-contrib-quality-levels @version 3.0.0 @license Apache-2.0 */\n        (function (global, factory) {\n            module.exports = factory(videojs) ;\n        })(commonjsGlobal, function (videojs) {\n\n            function _interopDefaultLegacy(e) {\n                return e && typeof e === 'object' && 'default' in e ? e : {\n                    'default': e\n                };\n            }\n            var videojs__default = /*#__PURE__*/_interopDefaultLegacy(videojs);\n\n            /**\n             * A single QualityLevel.\n             *\n             * interface QualityLevel {\n             *   readonly attribute DOMString id;\n             *            attribute DOMString label;\n             *   readonly attribute long width;\n             *   readonly attribute long height;\n             *   readonly attribute long bitrate;\n             *            attribute boolean enabled;\n             * };\n             *\n             * @class QualityLevel\n             */\n            class QualityLevel {\n                /**\n                 * Creates a QualityLevel\n                 *\n                 * @param {Representation|Object} representation The representation of the quality level\n                 * @param {string}   representation.id        Unique id of the QualityLevel\n                 * @param {number=}  representation.width     Resolution width of the QualityLevel\n                 * @param {number=}  representation.height    Resolution height of the QualityLevel\n                 * @param {number}   representation.bandwidth Bitrate of the QualityLevel\n                 * @param {number=}  representation.frameRate Frame-rate of the QualityLevel\n                 * @param {Function} representation.enabled   Callback to enable/disable QualityLevel\n                 */\n                constructor(representation) {\n                    let level = this; // eslint-disable-line\n\n                    level.id = representation.id;\n                    level.label = level.id;\n                    level.width = representation.width;\n                    level.height = representation.height;\n                    level.bitrate = representation.bandwidth;\n                    level.frameRate = representation.frameRate;\n                    level.enabled_ = representation.enabled;\n                    Object.defineProperty(level, 'enabled', {\n                        /**\n                         * Get whether the QualityLevel is enabled.\n                         *\n                         * @return {boolean} True if the QualityLevel is enabled.\n                         */\n                        get() {\n                            return level.enabled_();\n                        },\n                        /**\n                         * Enable or disable the QualityLevel.\n                         *\n                         * @param {boolean} enable true to enable QualityLevel, false to disable.\n                         */\n                        set(enable) {\n                            level.enabled_(enable);\n                        }\n                    });\n                    return level;\n                }\n            }\n\n            /**\n             * A list of QualityLevels.\n             *\n             * interface QualityLevelList : EventTarget {\n             *   getter QualityLevel (unsigned long index);\n             *   readonly attribute unsigned long length;\n             *   readonly attribute long selectedIndex;\n             *\n             *   void addQualityLevel(QualityLevel qualityLevel)\n             *   void removeQualityLevel(QualityLevel remove)\n             *   QualityLevel? getQualityLevelById(DOMString id);\n             *\n             *   attribute EventHandler onchange;\n             *   attribute EventHandler onaddqualitylevel;\n             *   attribute EventHandler onremovequalitylevel;\n             * };\n             *\n             * @extends videojs.EventTarget\n             * @class QualityLevelList\n             */\n\n            class QualityLevelList extends videojs__default['default'].EventTarget {\n                constructor() {\n                    super();\n                    let list = this; // eslint-disable-line\n\n                    list.levels_ = [];\n                    list.selectedIndex_ = -1;\n                    /**\n                     * Get the index of the currently selected QualityLevel.\n                     *\n                     * @returns {number} The index of the selected QualityLevel. -1 if none selected.\n                     * @readonly\n                     */\n\n                    Object.defineProperty(list, 'selectedIndex', {\n                        get() {\n                            return list.selectedIndex_;\n                        }\n                    });\n                    /**\n                     * Get the length of the list of QualityLevels.\n                     *\n                     * @returns {number} The length of the list.\n                     * @readonly\n                     */\n\n                    Object.defineProperty(list, 'length', {\n                        get() {\n                            return list.levels_.length;\n                        }\n                    });\n                    return list;\n                }\n                /**\n                 * Adds a quality level to the list.\n                 *\n                 * @param {Representation|Object} representation The representation of the quality level\n                 * @param {string}   representation.id        Unique id of the QualityLevel\n                 * @param {number=}  representation.width     Resolution width of the QualityLevel\n                 * @param {number=}  representation.height    Resolution height of the QualityLevel\n                 * @param {number}   representation.bandwidth Bitrate of the QualityLevel\n                 * @param {number=}  representation.frameRate Frame-rate of the QualityLevel\n                 * @param {Function} representation.enabled   Callback to enable/disable QualityLevel\n                 * @return {QualityLevel} the QualityLevel added to the list\n                 * @method addQualityLevel\n                 */\n\n                addQualityLevel(representation) {\n                    let qualityLevel = this.getQualityLevelById(representation.id); // Do not add duplicate quality levels\n\n                    if (qualityLevel) {\n                        return qualityLevel;\n                    }\n                    const index = this.levels_.length;\n                    qualityLevel = new QualityLevel(representation);\n                    if (!('' + index in this)) {\n                        Object.defineProperty(this, index, {\n                            get() {\n                                return this.levels_[index];\n                            }\n                        });\n                    }\n                    this.levels_.push(qualityLevel);\n                    this.trigger({\n                        qualityLevel,\n                        type: 'addqualitylevel'\n                    });\n                    return qualityLevel;\n                }\n                /**\n                 * Removes a quality level from the list.\n                 *\n                 * @param {QualityLevel} remove QualityLevel to remove to the list.\n                 * @return {QualityLevel|null} the QualityLevel removed or null if nothing removed\n                 * @method removeQualityLevel\n                 */\n\n                removeQualityLevel(qualityLevel) {\n                    let removed = null;\n                    for (let i = 0, l = this.length; i < l; i++) {\n                        if (this[i] === qualityLevel) {\n                            removed = this.levels_.splice(i, 1)[0];\n                            if (this.selectedIndex_ === i) {\n                                this.selectedIndex_ = -1;\n                            } else if (this.selectedIndex_ > i) {\n                                this.selectedIndex_--;\n                            }\n                            break;\n                        }\n                    }\n                    if (removed) {\n                        this.trigger({\n                            qualityLevel,\n                            type: 'removequalitylevel'\n                        });\n                    }\n                    return removed;\n                }\n                /**\n                 * Searches for a QualityLevel with the given id.\n                 *\n                 * @param {string} id The id of the QualityLevel to find.\n                 * @return {QualityLevel|null} The QualityLevel with id, or null if not found.\n                 * @method getQualityLevelById\n                 */\n\n                getQualityLevelById(id) {\n                    for (let i = 0, l = this.length; i < l; i++) {\n                        const level = this[i];\n                        if (level.id === id) {\n                            return level;\n                        }\n                    }\n                    return null;\n                }\n                /**\n                 * Resets the list of QualityLevels to empty\n                 *\n                 * @method dispose\n                 */\n\n                dispose() {\n                    this.selectedIndex_ = -1;\n                    this.levels_.length = 0;\n                }\n            }\n            /**\n             * change - The selected QualityLevel has changed.\n             * addqualitylevel - A QualityLevel has been added to the QualityLevelList.\n             * removequalitylevel - A QualityLevel has been removed from the QualityLevelList.\n             */\n\n            QualityLevelList.prototype.allowedEvents_ = {\n                change: 'change',\n                addqualitylevel: 'addqualitylevel',\n                removequalitylevel: 'removequalitylevel'\n            }; // emulate attribute EventHandler support to allow for feature detection\n\n            for (const event in QualityLevelList.prototype.allowedEvents_) {\n                QualityLevelList.prototype['on' + event] = null;\n            }\n            var version = \"3.0.0\";\n            const registerPlugin = videojs__default['default'].registerPlugin || videojs__default['default'].plugin;\n            /**\n             * Initialization function for the qualityLevels plugin. Sets up the QualityLevelList and\n             * event handlers.\n             *\n             * @param {Player} player Player object.\n             * @param {Object} options Plugin options object.\n             * @function initPlugin\n             */\n\n            const initPlugin = function (player, options) {\n                const originalPluginFn = player.qualityLevels;\n                const qualityLevelList = new QualityLevelList();\n                const disposeHandler = function () {\n                    qualityLevelList.dispose();\n                    player.qualityLevels = originalPluginFn;\n                    player.off('dispose', disposeHandler);\n                };\n                player.on('dispose', disposeHandler);\n                player.qualityLevels = () => qualityLevelList;\n                player.qualityLevels.VERSION = version;\n                return qualityLevelList;\n            };\n            /**\n             * A video.js plugin.\n             *\n             * In the plugin function, the value of `this` is a video.js `Player`\n             * instance. You cannot rely on the player being in a \"ready\" state here,\n             * depending on how the plugin is invoked. This may or may not be important\n             * to you; if not, remove the wait for \"ready\"!\n             *\n             * @param {Object} options Plugin options object\n             * @function qualityLevels\n             */\n\n            const qualityLevels = function (options) {\n                return initPlugin(this, videojs__default['default'].mergeOptions({}, options));\n            }; // Register the plugin with video.js.\n\n            registerPlugin('qualityLevels', qualityLevels); // Include the version number.\n\n            qualityLevels.VERSION = version;\n            return qualityLevels;\n        });\n    });\n\n    var urlToolkit = createCommonjsModule(function (module, exports) {\n        // see https://tools.ietf.org/html/rfc1808\n\n        (function (root) {\n            var URL_REGEX = /^(?=((?:[a-zA-Z0-9+\\-.]+:)?))\\1(?=((?:\\/\\/[^\\/?#]*)?))\\2(?=((?:(?:[^?#\\/]*\\/)*[^;?#\\/]*)?))\\3((?:;[^?#]*)?)(\\?[^#]*)?(#[^]*)?$/;\n            var FIRST_SEGMENT_REGEX = /^(?=([^\\/?#]*))\\1([^]*)$/;\n            var SLASH_DOT_REGEX = /(?:\\/|^)\\.(?=\\/)/g;\n            var SLASH_DOT_DOT_REGEX = /(?:\\/|^)\\.\\.\\/(?!\\.\\.\\/)[^\\/]*(?=\\/)/g;\n            var URLToolkit = {\n                // If opts.alwaysNormalize is true then the path will always be normalized even when it starts with / or //\n                // E.g\n                // With opts.alwaysNormalize = false (default, spec compliant)\n                // http://a.com/b/cd + /e/f/../g => http://a.com/e/f/../g\n                // With opts.alwaysNormalize = true (not spec compliant)\n                // http://a.com/b/cd + /e/f/../g => http://a.com/e/g\n                buildAbsoluteURL: function (baseURL, relativeURL, opts) {\n                    opts = opts || {};\n                    // remove any remaining space and CRLF\n                    baseURL = baseURL.trim();\n                    relativeURL = relativeURL.trim();\n                    if (!relativeURL) {\n                        // 2a) If the embedded URL is entirely empty, it inherits the\n                        // entire base URL (i.e., is set equal to the base URL)\n                        // and we are done.\n                        if (!opts.alwaysNormalize) {\n                            return baseURL;\n                        }\n                        var basePartsForNormalise = URLToolkit.parseURL(baseURL);\n                        if (!basePartsForNormalise) {\n                            throw new Error('Error trying to parse base URL.');\n                        }\n                        basePartsForNormalise.path = URLToolkit.normalizePath(basePartsForNormalise.path);\n                        return URLToolkit.buildURLFromParts(basePartsForNormalise);\n                    }\n                    var relativeParts = URLToolkit.parseURL(relativeURL);\n                    if (!relativeParts) {\n                        throw new Error('Error trying to parse relative URL.');\n                    }\n                    if (relativeParts.scheme) {\n                        // 2b) If the embedded URL starts with a scheme name, it is\n                        // interpreted as an absolute URL and we are done.\n                        if (!opts.alwaysNormalize) {\n                            return relativeURL;\n                        }\n                        relativeParts.path = URLToolkit.normalizePath(relativeParts.path);\n                        return URLToolkit.buildURLFromParts(relativeParts);\n                    }\n                    var baseParts = URLToolkit.parseURL(baseURL);\n                    if (!baseParts) {\n                        throw new Error('Error trying to parse base URL.');\n                    }\n                    if (!baseParts.netLoc && baseParts.path && baseParts.path[0] !== '/') {\n                        // If netLoc missing and path doesn't start with '/', assume everthing before the first '/' is the netLoc\n                        // This causes 'example.com/a' to be handled as '//example.com/a' instead of '/example.com/a'\n                        var pathParts = FIRST_SEGMENT_REGEX.exec(baseParts.path);\n                        baseParts.netLoc = pathParts[1];\n                        baseParts.path = pathParts[2];\n                    }\n                    if (baseParts.netLoc && !baseParts.path) {\n                        baseParts.path = '/';\n                    }\n                    var builtParts = {\n                        // 2c) Otherwise, the embedded URL inherits the scheme of\n                        // the base URL.\n                        scheme: baseParts.scheme,\n                        netLoc: relativeParts.netLoc,\n                        path: null,\n                        params: relativeParts.params,\n                        query: relativeParts.query,\n                        fragment: relativeParts.fragment\n                    };\n                    if (!relativeParts.netLoc) {\n                        // 3) If the embedded URL's <net_loc> is non-empty, we skip to\n                        // Step 7.  Otherwise, the embedded URL inherits the <net_loc>\n                        // (if any) of the base URL.\n                        builtParts.netLoc = baseParts.netLoc;\n                        // 4) If the embedded URL path is preceded by a slash \"/\", the\n                        // path is not relative and we skip to Step 7.\n                        if (relativeParts.path[0] !== '/') {\n                            if (!relativeParts.path) {\n                                // 5) If the embedded URL path is empty (and not preceded by a\n                                // slash), then the embedded URL inherits the base URL path\n                                builtParts.path = baseParts.path;\n                                // 5a) if the embedded URL's <params> is non-empty, we skip to\n                                // step 7; otherwise, it inherits the <params> of the base\n                                // URL (if any) and\n                                if (!relativeParts.params) {\n                                    builtParts.params = baseParts.params;\n                                    // 5b) if the embedded URL's <query> is non-empty, we skip to\n                                    // step 7; otherwise, it inherits the <query> of the base\n                                    // URL (if any) and we skip to step 7.\n                                    if (!relativeParts.query) {\n                                        builtParts.query = baseParts.query;\n                                    }\n                                }\n                            } else {\n                                // 6) The last segment of the base URL's path (anything\n                                // following the rightmost slash \"/\", or the entire path if no\n                                // slash is present) is removed and the embedded URL's path is\n                                // appended in its place.\n                                var baseURLPath = baseParts.path;\n                                var newPath = baseURLPath.substring(0, baseURLPath.lastIndexOf('/') + 1) + relativeParts.path;\n                                builtParts.path = URLToolkit.normalizePath(newPath);\n                            }\n                        }\n                    }\n                    if (builtParts.path === null) {\n                        builtParts.path = opts.alwaysNormalize ? URLToolkit.normalizePath(relativeParts.path) : relativeParts.path;\n                    }\n                    return URLToolkit.buildURLFromParts(builtParts);\n                },\n                parseURL: function (url) {\n                    var parts = URL_REGEX.exec(url);\n                    if (!parts) {\n                        return null;\n                    }\n                    return {\n                        scheme: parts[1] || '',\n                        netLoc: parts[2] || '',\n                        path: parts[3] || '',\n                        params: parts[4] || '',\n                        query: parts[5] || '',\n                        fragment: parts[6] || ''\n                    };\n                },\n                normalizePath: function (path) {\n                    // The following operations are\n                    // then applied, in order, to the new path:\n                    // 6a) All occurrences of \"./\", where \".\" is a complete path\n                    // segment, are removed.\n                    // 6b) If the path ends with \".\" as a complete path segment,\n                    // that \".\" is removed.\n                    path = path.split('').reverse().join('').replace(SLASH_DOT_REGEX, '');\n                    // 6c) All occurrences of \"<segment>/../\", where <segment> is a\n                    // complete path segment not equal to \"..\", are removed.\n                    // Removal of these path segments is performed iteratively,\n                    // removing the leftmost matching pattern on each iteration,\n                    // until no matching pattern remains.\n                    // 6d) If the path ends with \"<segment>/..\", where <segment> is a\n                    // complete path segment not equal to \"..\", that\n                    // \"<segment>/..\" is removed.\n                    while (path.length !== (path = path.replace(SLASH_DOT_DOT_REGEX, '')).length) {}\n                    return path.split('').reverse().join('');\n                },\n                buildURLFromParts: function (parts) {\n                    return parts.scheme + parts.netLoc + parts.path + parts.params + parts.query + parts.fragment;\n                }\n            };\n            module.exports = URLToolkit;\n        })();\n    });\n\n    var DEFAULT_LOCATION$1 = 'http://example.com';\n    var resolveUrl$2 = function resolveUrl(baseUrl, relativeUrl) {\n        // return early if we don't need to resolve\n        if (/^[a-z]+:/i.test(relativeUrl)) {\n            return relativeUrl;\n        } // if baseUrl is a data URI, ignore it and resolve everything relative to window.location\n\n        if (/^data:/.test(baseUrl)) {\n            baseUrl = window.location && window.location.href || '';\n        } // IE11 supports URL but not the URL constructor\n        // feature detect the behavior we want\n\n        var nativeURL = typeof window.URL === 'function';\n        var protocolLess = /^\\/\\//.test(baseUrl); // remove location if window.location isn't available (i.e. we're in node)\n        // and if baseUrl isn't an absolute url\n\n        var removeLocation = !window.location && !/\\/\\//i.test(baseUrl); // if the base URL is relative then combine with the current location\n\n        if (nativeURL) {\n            baseUrl = new window.URL(baseUrl, window.location || DEFAULT_LOCATION$1);\n        } else if (!/\\/\\//i.test(baseUrl)) {\n            baseUrl = urlToolkit.buildAbsoluteURL(window.location && window.location.href || '', baseUrl);\n        }\n        if (nativeURL) {\n            var newUrl = new URL(relativeUrl, baseUrl); // if we're a protocol-less url, remove the protocol\n            // and if we're location-less, remove the location\n            // otherwise, return the url unmodified\n\n            if (removeLocation) {\n                return newUrl.href.slice(DEFAULT_LOCATION$1.length);\n            } else if (protocolLess) {\n                return newUrl.href.slice(newUrl.protocol.length);\n            }\n            return newUrl.href;\n        }\n        return urlToolkit.buildAbsoluteURL(baseUrl, relativeUrl);\n    };\n\n    /**\n     * @file stream.js\n     */\n\n    /**\n     * A lightweight readable stream implemention that handles event dispatching.\n     *\n     * @class Stream\n     */\n    var Stream = /*#__PURE__*/function () {\n        function Stream() {\n            this.listeners = {};\n        }\n        /**\n         * Add a listener for a specified event type.\n         *\n         * @param {string} type the event name\n         * @param {Function} listener the callback to be invoked when an event of\n         * the specified type occurs\n         */\n\n        var _proto = Stream.prototype;\n        _proto.on = function on(type, listener) {\n            if (!this.listeners[type]) {\n                this.listeners[type] = [];\n            }\n            this.listeners[type].push(listener);\n        }\n        /**\n         * Remove a listener for a specified event type.\n         *\n         * @param {string} type the event name\n         * @param {Function} listener  a function previously registered for this\n         * type of event through `on`\n         * @return {boolean} if we could turn it off or not\n         */;\n\n        _proto.off = function off(type, listener) {\n            if (!this.listeners[type]) {\n                return false;\n            }\n            var index = this.listeners[type].indexOf(listener); // TODO: which is better?\n            // In Video.js we slice listener functions\n            // on trigger so that it does not mess up the order\n            // while we loop through.\n            //\n            // Here we slice on off so that the loop in trigger\n            // can continue using it's old reference to loop without\n            // messing up the order.\n\n            this.listeners[type] = this.listeners[type].slice(0);\n            this.listeners[type].splice(index, 1);\n            return index > -1;\n        }\n        /**\n         * Trigger an event of the specified type on this stream. Any additional\n         * arguments to this function are passed as parameters to event listeners.\n         *\n         * @param {string} type the event name\n         */;\n\n        _proto.trigger = function trigger(type) {\n            var callbacks = this.listeners[type];\n            if (!callbacks) {\n                return;\n            } // Slicing the arguments on every invocation of this method\n            // can add a significant amount of overhead. Avoid the\n            // intermediate object creation for the common case of a\n            // single callback argument\n\n            if (arguments.length === 2) {\n                var length = callbacks.length;\n                for (var i = 0; i < length; ++i) {\n                    callbacks[i].call(this, arguments[1]);\n                }\n            } else {\n                var args = Array.prototype.slice.call(arguments, 1);\n                var _length = callbacks.length;\n                for (var _i = 0; _i < _length; ++_i) {\n                    callbacks[_i].apply(this, args);\n                }\n            }\n        }\n        /**\n         * Destroys the stream and cleans up.\n         */;\n\n        _proto.dispose = function dispose() {\n            this.listeners = {};\n        }\n        /**\n         * Forwards all `data` events on this stream to the destination stream. The\n         * destination stream should provide a method `push` to receive the data\n         * events as they arrive.\n         *\n         * @param {Stream} destination the stream that will receive all `data` events\n         * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n         */;\n\n        _proto.pipe = function pipe(destination) {\n            this.on('data', function (data) {\n                destination.push(data);\n            });\n        };\n        return Stream;\n    }();\n\n    var atob$1 = function atob(s) {\n        return window.atob ? window.atob(s) : Buffer.from(s, 'base64').toString('binary');\n    };\n    function decodeB64ToUint8Array$1(b64Text) {\n        var decodedString = atob$1(b64Text);\n        var array = new Uint8Array(decodedString.length);\n        for (var i = 0; i < decodedString.length; i++) {\n            array[i] = decodedString.charCodeAt(i);\n        }\n        return array;\n    }\n\n    /*! @name m3u8-parser @version 6.0.0 @license Apache-2.0 */\n\n    /**\n     * @file m3u8/line-stream.js\n     */\n    /**\n     * A stream that buffers string input and generates a `data` event for each\n     * line.\n     *\n     * @class LineStream\n     * @extends Stream\n     */\n\n    class LineStream extends Stream {\n        constructor() {\n            super();\n            this.buffer = '';\n        }\n        /**\n         * Add new data to be parsed.\n         *\n         * @param {string} data the text to process\n         */\n\n        push(data) {\n            let nextNewline;\n            this.buffer += data;\n            nextNewline = this.buffer.indexOf('\\n');\n            for (; nextNewline > -1; nextNewline = this.buffer.indexOf('\\n')) {\n                this.trigger('data', this.buffer.substring(0, nextNewline));\n                this.buffer = this.buffer.substring(nextNewline + 1);\n            }\n        }\n    }\n    const TAB = String.fromCharCode(0x09);\n    const parseByterange = function (byterangeString) {\n        // optionally match and capture 0+ digits before `@`\n        // optionally match and capture 0+ digits after `@`\n        const match = /([0-9.]*)?@?([0-9.]*)?/.exec(byterangeString || '');\n        const result = {};\n        if (match[1]) {\n            result.length = parseInt(match[1], 10);\n        }\n        if (match[2]) {\n            result.offset = parseInt(match[2], 10);\n        }\n        return result;\n    };\n    /**\n     * \"forgiving\" attribute list psuedo-grammar:\n     * attributes -> keyvalue (',' keyvalue)*\n     * keyvalue   -> key '=' value\n     * key        -> [^=]*\n     * value      -> '\"' [^\"]* '\"' | [^,]*\n     */\n\n    const attributeSeparator = function () {\n        const key = '[^=]*';\n        const value = '\"[^\"]*\"|[^,]*';\n        const keyvalue = '(?:' + key + ')=(?:' + value + ')';\n        return new RegExp('(?:^|,)(' + keyvalue + ')');\n    };\n    /**\n     * Parse attributes from a line given the separator\n     *\n     * @param {string} attributes the attribute line to parse\n     */\n\n    const parseAttributes$1 = function (attributes) {\n        const result = {};\n        if (!attributes) {\n            return result;\n        } // split the string using attributes as the separator\n\n        const attrs = attributes.split(attributeSeparator());\n        let i = attrs.length;\n        let attr;\n        while (i--) {\n            // filter out unmatched portions of the string\n            if (attrs[i] === '') {\n                continue;\n            } // split the key and value\n\n            attr = /([^=]*)=(.*)/.exec(attrs[i]).slice(1); // trim whitespace and remove optional quotes around the value\n\n            attr[0] = attr[0].replace(/^\\s+|\\s+$/g, '');\n            attr[1] = attr[1].replace(/^\\s+|\\s+$/g, '');\n            attr[1] = attr[1].replace(/^['\"](.*)['\"]$/g, '$1');\n            result[attr[0]] = attr[1];\n        }\n        return result;\n    };\n    /**\n     * A line-level M3U8 parser event stream. It expects to receive input one\n     * line at a time and performs a context-free parse of its contents. A stream\n     * interpretation of a manifest can be useful if the manifest is expected to\n     * be too large to fit comfortably into memory or the entirety of the input\n     * is not immediately available. Otherwise, it's probably much easier to work\n     * with a regular `Parser` object.\n     *\n     * Produces `data` events with an object that captures the parser's\n     * interpretation of the input. That object has a property `tag` that is one\n     * of `uri`, `comment`, or `tag`. URIs only have a single additional\n     * property, `line`, which captures the entirety of the input without\n     * interpretation. Comments similarly have a single additional property\n     * `text` which is the input without the leading `#`.\n     *\n     * Tags always have a property `tagType` which is the lower-cased version of\n     * the M3U8 directive without the `#EXT` or `#EXT-X-` prefix. For instance,\n     * `#EXT-X-MEDIA-SEQUENCE` becomes `media-sequence` when parsed. Unrecognized\n     * tags are given the tag type `unknown` and a single additional property\n     * `data` with the remainder of the input.\n     *\n     * @class ParseStream\n     * @extends Stream\n     */\n\n    class ParseStream extends Stream {\n        constructor() {\n            super();\n            this.customParsers = [];\n            this.tagMappers = [];\n        }\n        /**\n         * Parses an additional line of input.\n         *\n         * @param {string} line a single line of an M3U8 file to parse\n         */\n\n        push(line) {\n            let match;\n            let event; // strip whitespace\n\n            line = line.trim();\n            if (line.length === 0) {\n                // ignore empty lines\n                return;\n            } // URIs\n\n            if (line[0] !== '#') {\n                this.trigger('data', {\n                    type: 'uri',\n                    uri: line\n                });\n                return;\n            } // map tags\n\n            const newLines = this.tagMappers.reduce((acc, mapper) => {\n                const mappedLine = mapper(line); // skip if unchanged\n\n                if (mappedLine === line) {\n                    return acc;\n                }\n                return acc.concat([mappedLine]);\n            }, [line]);\n            newLines.forEach(newLine => {\n                for (let i = 0; i < this.customParsers.length; i++) {\n                    if (this.customParsers[i].call(this, newLine)) {\n                        return;\n                    }\n                } // Comments\n\n                if (newLine.indexOf('#EXT') !== 0) {\n                    this.trigger('data', {\n                        type: 'comment',\n                        text: newLine.slice(1)\n                    });\n                    return;\n                } // strip off any carriage returns here so the regex matching\n                // doesn't have to account for them.\n\n                newLine = newLine.replace('\\r', ''); // Tags\n\n                match = /^#EXTM3U/.exec(newLine);\n                if (match) {\n                    this.trigger('data', {\n                        type: 'tag',\n                        tagType: 'm3u'\n                    });\n                    return;\n                }\n                match = /^#EXTINF:([0-9\\.]*)?,?(.*)?$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'inf'\n                    };\n                    if (match[1]) {\n                        event.duration = parseFloat(match[1]);\n                    }\n                    if (match[2]) {\n                        event.title = match[2];\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-TARGETDURATION:([0-9.]*)?/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'targetduration'\n                    };\n                    if (match[1]) {\n                        event.duration = parseInt(match[1], 10);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-VERSION:([0-9.]*)?/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'version'\n                    };\n                    if (match[1]) {\n                        event.version = parseInt(match[1], 10);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-MEDIA-SEQUENCE:(\\-?[0-9.]*)?/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'media-sequence'\n                    };\n                    if (match[1]) {\n                        event.number = parseInt(match[1], 10);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-DISCONTINUITY-SEQUENCE:(\\-?[0-9.]*)?/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'discontinuity-sequence'\n                    };\n                    if (match[1]) {\n                        event.number = parseInt(match[1], 10);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-PLAYLIST-TYPE:(.*)?$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'playlist-type'\n                    };\n                    if (match[1]) {\n                        event.playlistType = match[1];\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-BYTERANGE:(.*)?$/.exec(newLine);\n                if (match) {\n                    event = _extends$1(parseByterange(match[1]), {\n                        type: 'tag',\n                        tagType: 'byterange'\n                    });\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-ALLOW-CACHE:(YES|NO)?/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'allow-cache'\n                    };\n                    if (match[1]) {\n                        event.allowed = !/NO/.test(match[1]);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-MAP:(.*)$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'map'\n                    };\n                    if (match[1]) {\n                        const attributes = parseAttributes$1(match[1]);\n                        if (attributes.URI) {\n                            event.uri = attributes.URI;\n                        }\n                        if (attributes.BYTERANGE) {\n                            event.byterange = parseByterange(attributes.BYTERANGE);\n                        }\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-STREAM-INF:(.*)$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'stream-inf'\n                    };\n                    if (match[1]) {\n                        event.attributes = parseAttributes$1(match[1]);\n                        if (event.attributes.RESOLUTION) {\n                            const split = event.attributes.RESOLUTION.split('x');\n                            const resolution = {};\n                            if (split[0]) {\n                                resolution.width = parseInt(split[0], 10);\n                            }\n                            if (split[1]) {\n                                resolution.height = parseInt(split[1], 10);\n                            }\n                            event.attributes.RESOLUTION = resolution;\n                        }\n                        if (event.attributes.BANDWIDTH) {\n                            event.attributes.BANDWIDTH = parseInt(event.attributes.BANDWIDTH, 10);\n                        }\n                        if (event.attributes['FRAME-RATE']) {\n                            event.attributes['FRAME-RATE'] = parseFloat(event.attributes['FRAME-RATE']);\n                        }\n                        if (event.attributes['PROGRAM-ID']) {\n                            event.attributes['PROGRAM-ID'] = parseInt(event.attributes['PROGRAM-ID'], 10);\n                        }\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-MEDIA:(.*)$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'media'\n                    };\n                    if (match[1]) {\n                        event.attributes = parseAttributes$1(match[1]);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-ENDLIST/.exec(newLine);\n                if (match) {\n                    this.trigger('data', {\n                        type: 'tag',\n                        tagType: 'endlist'\n                    });\n                    return;\n                }\n                match = /^#EXT-X-DISCONTINUITY/.exec(newLine);\n                if (match) {\n                    this.trigger('data', {\n                        type: 'tag',\n                        tagType: 'discontinuity'\n                    });\n                    return;\n                }\n                match = /^#EXT-X-PROGRAM-DATE-TIME:(.*)$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'program-date-time'\n                    };\n                    if (match[1]) {\n                        event.dateTimeString = match[1];\n                        event.dateTimeObject = new Date(match[1]);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-KEY:(.*)$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'key'\n                    };\n                    if (match[1]) {\n                        event.attributes = parseAttributes$1(match[1]); // parse the IV string into a Uint32Array\n\n                        if (event.attributes.IV) {\n                            if (event.attributes.IV.substring(0, 2).toLowerCase() === '0x') {\n                                event.attributes.IV = event.attributes.IV.substring(2);\n                            }\n                            event.attributes.IV = event.attributes.IV.match(/.{8}/g);\n                            event.attributes.IV[0] = parseInt(event.attributes.IV[0], 16);\n                            event.attributes.IV[1] = parseInt(event.attributes.IV[1], 16);\n                            event.attributes.IV[2] = parseInt(event.attributes.IV[2], 16);\n                            event.attributes.IV[3] = parseInt(event.attributes.IV[3], 16);\n                            event.attributes.IV = new Uint32Array(event.attributes.IV);\n                        }\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-START:(.*)$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'start'\n                    };\n                    if (match[1]) {\n                        event.attributes = parseAttributes$1(match[1]);\n                        event.attributes['TIME-OFFSET'] = parseFloat(event.attributes['TIME-OFFSET']);\n                        event.attributes.PRECISE = /YES/.test(event.attributes.PRECISE);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-CUE-OUT-CONT:(.*)?$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'cue-out-cont'\n                    };\n                    if (match[1]) {\n                        event.data = match[1];\n                    } else {\n                        event.data = '';\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-CUE-OUT:(.*)?$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'cue-out'\n                    };\n                    if (match[1]) {\n                        event.data = match[1];\n                    } else {\n                        event.data = '';\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-CUE-IN:(.*)?$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'cue-in'\n                    };\n                    if (match[1]) {\n                        event.data = match[1];\n                    } else {\n                        event.data = '';\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-SKIP:(.*)$/.exec(newLine);\n                if (match && match[1]) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'skip'\n                    };\n                    event.attributes = parseAttributes$1(match[1]);\n                    if (event.attributes.hasOwnProperty('SKIPPED-SEGMENTS')) {\n                        event.attributes['SKIPPED-SEGMENTS'] = parseInt(event.attributes['SKIPPED-SEGMENTS'], 10);\n                    }\n                    if (event.attributes.hasOwnProperty('RECENTLY-REMOVED-DATERANGES')) {\n                        event.attributes['RECENTLY-REMOVED-DATERANGES'] = event.attributes['RECENTLY-REMOVED-DATERANGES'].split(TAB);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-PART:(.*)$/.exec(newLine);\n                if (match && match[1]) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'part'\n                    };\n                    event.attributes = parseAttributes$1(match[1]);\n                    ['DURATION'].forEach(function (key) {\n                        if (event.attributes.hasOwnProperty(key)) {\n                            event.attributes[key] = parseFloat(event.attributes[key]);\n                        }\n                    });\n                    ['INDEPENDENT', 'GAP'].forEach(function (key) {\n                        if (event.attributes.hasOwnProperty(key)) {\n                            event.attributes[key] = /YES/.test(event.attributes[key]);\n                        }\n                    });\n                    if (event.attributes.hasOwnProperty('BYTERANGE')) {\n                        event.attributes.byterange = parseByterange(event.attributes.BYTERANGE);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-SERVER-CONTROL:(.*)$/.exec(newLine);\n                if (match && match[1]) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'server-control'\n                    };\n                    event.attributes = parseAttributes$1(match[1]);\n                    ['CAN-SKIP-UNTIL', 'PART-HOLD-BACK', 'HOLD-BACK'].forEach(function (key) {\n                        if (event.attributes.hasOwnProperty(key)) {\n                            event.attributes[key] = parseFloat(event.attributes[key]);\n                        }\n                    });\n                    ['CAN-SKIP-DATERANGES', 'CAN-BLOCK-RELOAD'].forEach(function (key) {\n                        if (event.attributes.hasOwnProperty(key)) {\n                            event.attributes[key] = /YES/.test(event.attributes[key]);\n                        }\n                    });\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-PART-INF:(.*)$/.exec(newLine);\n                if (match && match[1]) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'part-inf'\n                    };\n                    event.attributes = parseAttributes$1(match[1]);\n                    ['PART-TARGET'].forEach(function (key) {\n                        if (event.attributes.hasOwnProperty(key)) {\n                            event.attributes[key] = parseFloat(event.attributes[key]);\n                        }\n                    });\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-PRELOAD-HINT:(.*)$/.exec(newLine);\n                if (match && match[1]) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'preload-hint'\n                    };\n                    event.attributes = parseAttributes$1(match[1]);\n                    ['BYTERANGE-START', 'BYTERANGE-LENGTH'].forEach(function (key) {\n                        if (event.attributes.hasOwnProperty(key)) {\n                            event.attributes[key] = parseInt(event.attributes[key], 10);\n                            const subkey = key === 'BYTERANGE-LENGTH' ? 'length' : 'offset';\n                            event.attributes.byterange = event.attributes.byterange || {};\n                            event.attributes.byterange[subkey] = event.attributes[key]; // only keep the parsed byterange object.\n\n                            delete event.attributes[key];\n                        }\n                    });\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-RENDITION-REPORT:(.*)$/.exec(newLine);\n                if (match && match[1]) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'rendition-report'\n                    };\n                    event.attributes = parseAttributes$1(match[1]);\n                    ['LAST-MSN', 'LAST-PART'].forEach(function (key) {\n                        if (event.attributes.hasOwnProperty(key)) {\n                            event.attributes[key] = parseInt(event.attributes[key], 10);\n                        }\n                    });\n                    this.trigger('data', event);\n                    return;\n                } // unknown tag type\n\n                this.trigger('data', {\n                    type: 'tag',\n                    data: newLine.slice(4)\n                });\n            });\n        }\n        /**\n         * Add a parser for custom headers\n         *\n         * @param {Object}   options              a map of options for the added parser\n         * @param {RegExp}   options.expression   a regular expression to match the custom header\n         * @param {string}   options.customType   the custom type to register to the output\n         * @param {Function} [options.dataParser] function to parse the line into an object\n         * @param {boolean}  [options.segment]    should tag data be attached to the segment object\n         */\n\n        addParser({\n                      expression,\n                      customType,\n                      dataParser,\n                      segment\n                  }) {\n            if (typeof dataParser !== 'function') {\n                dataParser = line => line;\n            }\n            this.customParsers.push(line => {\n                const match = expression.exec(line);\n                if (match) {\n                    this.trigger('data', {\n                        type: 'custom',\n                        data: dataParser(line),\n                        customType,\n                        segment\n                    });\n                    return true;\n                }\n            });\n        }\n        /**\n         * Add a custom header mapper\n         *\n         * @param {Object}   options\n         * @param {RegExp}   options.expression   a regular expression to match the custom header\n         * @param {Function} options.map          function to translate tag into a different tag\n         */\n\n        addTagMapper({\n                         expression,\n                         map\n                     }) {\n            const mapFn = line => {\n                if (expression.test(line)) {\n                    return map(line);\n                }\n                return line;\n            };\n            this.tagMappers.push(mapFn);\n        }\n    }\n    const camelCase = str => str.toLowerCase().replace(/-(\\w)/g, a => a[1].toUpperCase());\n    const camelCaseKeys = function (attributes) {\n        const result = {};\n        Object.keys(attributes).forEach(function (key) {\n            result[camelCase(key)] = attributes[key];\n        });\n        return result;\n    }; // set SERVER-CONTROL hold back based upon targetDuration and partTargetDuration\n    // we need this helper because defaults are based upon targetDuration and\n    // partTargetDuration being set, but they may not be if SERVER-CONTROL appears before\n    // target durations are set.\n\n    const setHoldBack = function (manifest) {\n        const {\n            serverControl,\n            targetDuration,\n            partTargetDuration\n        } = manifest;\n        if (!serverControl) {\n            return;\n        }\n        const tag = '#EXT-X-SERVER-CONTROL';\n        const hb = 'holdBack';\n        const phb = 'partHoldBack';\n        const minTargetDuration = targetDuration && targetDuration * 3;\n        const minPartDuration = partTargetDuration && partTargetDuration * 2;\n        if (targetDuration && !serverControl.hasOwnProperty(hb)) {\n            serverControl[hb] = minTargetDuration;\n            this.trigger('info', {\n                message: `${tag} defaulting HOLD-BACK to targetDuration * 3 (${minTargetDuration}).`\n            });\n        }\n        if (minTargetDuration && serverControl[hb] < minTargetDuration) {\n            this.trigger('warn', {\n                message: `${tag} clamping HOLD-BACK (${serverControl[hb]}) to targetDuration * 3 (${minTargetDuration})`\n            });\n            serverControl[hb] = minTargetDuration;\n        } // default no part hold back to part target duration * 3\n\n        if (partTargetDuration && !serverControl.hasOwnProperty(phb)) {\n            serverControl[phb] = partTargetDuration * 3;\n            this.trigger('info', {\n                message: `${tag} defaulting PART-HOLD-BACK to partTargetDuration * 3 (${serverControl[phb]}).`\n            });\n        } // if part hold back is too small default it to part target duration * 2\n\n        if (partTargetDuration && serverControl[phb] < minPartDuration) {\n            this.trigger('warn', {\n                message: `${tag} clamping PART-HOLD-BACK (${serverControl[phb]}) to partTargetDuration * 2 (${minPartDuration}).`\n            });\n            serverControl[phb] = minPartDuration;\n        }\n    };\n    /**\n     * A parser for M3U8 files. The current interpretation of the input is\n     * exposed as a property `manifest` on parser objects. It's just two lines to\n     * create and parse a manifest once you have the contents available as a string:\n     *\n     * ```js\n     * var parser = new m3u8.Parser();\n     * parser.push(xhr.responseText);\n     * ```\n     *\n     * New input can later be applied to update the manifest object by calling\n     * `push` again.\n     *\n     * The parser attempts to create a usable manifest object even if the\n     * underlying input is somewhat nonsensical. It emits `info` and `warning`\n     * events during the parse if it encounters input that seems invalid or\n     * requires some property of the manifest object to be defaulted.\n     *\n     * @class Parser\n     * @extends Stream\n     */\n\n    class Parser extends Stream {\n        constructor() {\n            super();\n            this.lineStream = new LineStream();\n            this.parseStream = new ParseStream();\n            this.lineStream.pipe(this.parseStream);\n            /* eslint-disable consistent-this */\n\n            const self = this;\n            /* eslint-enable consistent-this */\n\n            const uris = [];\n            let currentUri = {}; // if specified, the active EXT-X-MAP definition\n\n            let currentMap; // if specified, the active decryption key\n\n            let key;\n            let hasParts = false;\n            const noop = function () {};\n            const defaultMediaGroups = {\n                'AUDIO': {},\n                'VIDEO': {},\n                'CLOSED-CAPTIONS': {},\n                'SUBTITLES': {}\n            }; // This is the Widevine UUID from DASH IF IOP. The same exact string is\n            // used in MPDs with Widevine encrypted streams.\n\n            const widevineUuid = 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed'; // group segments into numbered timelines delineated by discontinuities\n\n            let currentTimeline = 0; // the manifest is empty until the parse stream begins delivering data\n\n            this.manifest = {\n                allowCache: true,\n                discontinuityStarts: [],\n                segments: []\n            }; // keep track of the last seen segment's byte range end, as segments are not required\n            // to provide the offset, in which case it defaults to the next byte after the\n            // previous segment\n\n            let lastByterangeEnd = 0; // keep track of the last seen part's byte range end.\n\n            let lastPartByterangeEnd = 0;\n            this.on('end', () => {\n                // only add preloadSegment if we don't yet have a uri for it.\n                // and we actually have parts/preloadHints\n                if (currentUri.uri || !currentUri.parts && !currentUri.preloadHints) {\n                    return;\n                }\n                if (!currentUri.map && currentMap) {\n                    currentUri.map = currentMap;\n                }\n                if (!currentUri.key && key) {\n                    currentUri.key = key;\n                }\n                if (!currentUri.timeline && typeof currentTimeline === 'number') {\n                    currentUri.timeline = currentTimeline;\n                }\n                this.manifest.preloadSegment = currentUri;\n            }); // update the manifest with the m3u8 entry from the parse stream\n\n            this.parseStream.on('data', function (entry) {\n                let mediaGroup;\n                let rendition;\n                ({\n                    tag() {\n                        // switch based on the tag type\n                        (({\n                            version() {\n                                if (entry.version) {\n                                    this.manifest.version = entry.version;\n                                }\n                            },\n                            'allow-cache'() {\n                                this.manifest.allowCache = entry.allowed;\n                                if (!('allowed' in entry)) {\n                                    this.trigger('info', {\n                                        message: 'defaulting allowCache to YES'\n                                    });\n                                    this.manifest.allowCache = true;\n                                }\n                            },\n                            byterange() {\n                                const byterange = {};\n                                if ('length' in entry) {\n                                    currentUri.byterange = byterange;\n                                    byterange.length = entry.length;\n                                    if (!('offset' in entry)) {\n                                        /*\n                     * From the latest spec (as of this writing):\n                     * https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.2.2\n                     *\n                     * Same text since EXT-X-BYTERANGE's introduction in draft 7:\n                     * https://tools.ietf.org/html/draft-pantos-http-live-streaming-07#section-3.3.1)\n                     *\n                     * \"If o [offset] is not present, the sub-range begins at the next byte\n                     * following the sub-range of the previous media segment.\"\n                     */\n                                        entry.offset = lastByterangeEnd;\n                                    }\n                                }\n                                if ('offset' in entry) {\n                                    currentUri.byterange = byterange;\n                                    byterange.offset = entry.offset;\n                                }\n                                lastByterangeEnd = byterange.offset + byterange.length;\n                            },\n                            endlist() {\n                                this.manifest.endList = true;\n                            },\n                            inf() {\n                                if (!('mediaSequence' in this.manifest)) {\n                                    this.manifest.mediaSequence = 0;\n                                    this.trigger('info', {\n                                        message: 'defaulting media sequence to zero'\n                                    });\n                                }\n                                if (!('discontinuitySequence' in this.manifest)) {\n                                    this.manifest.discontinuitySequence = 0;\n                                    this.trigger('info', {\n                                        message: 'defaulting discontinuity sequence to zero'\n                                    });\n                                }\n                                if (entry.duration > 0) {\n                                    currentUri.duration = entry.duration;\n                                }\n                                if (entry.duration === 0) {\n                                    currentUri.duration = 0.01;\n                                    this.trigger('info', {\n                                        message: 'updating zero segment duration to a small value'\n                                    });\n                                }\n                                this.manifest.segments = uris;\n                            },\n                            key() {\n                                if (!entry.attributes) {\n                                    this.trigger('warn', {\n                                        message: 'ignoring key declaration without attribute list'\n                                    });\n                                    return;\n                                } // clear the active encryption key\n\n                                if (entry.attributes.METHOD === 'NONE') {\n                                    key = null;\n                                    return;\n                                }\n                                if (!entry.attributes.URI) {\n                                    this.trigger('warn', {\n                                        message: 'ignoring key declaration without URI'\n                                    });\n                                    return;\n                                }\n                                if (entry.attributes.KEYFORMAT === 'com.apple.streamingkeydelivery') {\n                                    this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this.\n\n                                    this.manifest.contentProtection['com.apple.fps.1_0'] = {\n                                        attributes: entry.attributes\n                                    };\n                                    return;\n                                }\n                                if (entry.attributes.KEYFORMAT === 'com.microsoft.playready') {\n                                    this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this.\n\n                                    this.manifest.contentProtection['com.microsoft.playready'] = {\n                                        uri: entry.attributes.URI\n                                    };\n                                    return;\n                                } // check if the content is encrypted for Widevine\n                                // Widevine/HLS spec: https://storage.googleapis.com/wvdocs/Widevine_DRM_HLS.pdf\n\n                                if (entry.attributes.KEYFORMAT === widevineUuid) {\n                                    const VALID_METHODS = ['SAMPLE-AES', 'SAMPLE-AES-CTR', 'SAMPLE-AES-CENC'];\n                                    if (VALID_METHODS.indexOf(entry.attributes.METHOD) === -1) {\n                                        this.trigger('warn', {\n                                            message: 'invalid key method provided for Widevine'\n                                        });\n                                        return;\n                                    }\n                                    if (entry.attributes.METHOD === 'SAMPLE-AES-CENC') {\n                                        this.trigger('warn', {\n                                            message: 'SAMPLE-AES-CENC is deprecated, please use SAMPLE-AES-CTR instead'\n                                        });\n                                    }\n                                    if (entry.attributes.URI.substring(0, 23) !== 'data:text/plain;base64,') {\n                                        this.trigger('warn', {\n                                            message: 'invalid key URI provided for Widevine'\n                                        });\n                                        return;\n                                    }\n                                    if (!(entry.attributes.KEYID && entry.attributes.KEYID.substring(0, 2) === '0x')) {\n                                        this.trigger('warn', {\n                                            message: 'invalid key ID provided for Widevine'\n                                        });\n                                        return;\n                                    } // if Widevine key attributes are valid, store them as `contentProtection`\n                                    // on the manifest to emulate Widevine tag structure in a DASH mpd\n\n                                    this.manifest.contentProtection = this.manifest.contentProtection || {};\n                                    this.manifest.contentProtection['com.widevine.alpha'] = {\n                                        attributes: {\n                                            schemeIdUri: entry.attributes.KEYFORMAT,\n                                            // remove '0x' from the key id string\n                                            keyId: entry.attributes.KEYID.substring(2)\n                                        },\n                                        // decode the base64-encoded PSSH box\n                                        pssh: decodeB64ToUint8Array$1(entry.attributes.URI.split(',')[1])\n                                    };\n                                    return;\n                                }\n                                if (!entry.attributes.METHOD) {\n                                    this.trigger('warn', {\n                                        message: 'defaulting key method to AES-128'\n                                    });\n                                } // setup an encryption key for upcoming segments\n\n                                key = {\n                                    method: entry.attributes.METHOD || 'AES-128',\n                                    uri: entry.attributes.URI\n                                };\n                                if (typeof entry.attributes.IV !== 'undefined') {\n                                    key.iv = entry.attributes.IV;\n                                }\n                            },\n                            'media-sequence'() {\n                                if (!isFinite(entry.number)) {\n                                    this.trigger('warn', {\n                                        message: 'ignoring invalid media sequence: ' + entry.number\n                                    });\n                                    return;\n                                }\n                                this.manifest.mediaSequence = entry.number;\n                            },\n                            'discontinuity-sequence'() {\n                                if (!isFinite(entry.number)) {\n                                    this.trigger('warn', {\n                                        message: 'ignoring invalid discontinuity sequence: ' + entry.number\n                                    });\n                                    return;\n                                }\n                                this.manifest.discontinuitySequence = entry.number;\n                                currentTimeline = entry.number;\n                            },\n                            'playlist-type'() {\n                                if (!/VOD|EVENT/.test(entry.playlistType)) {\n                                    this.trigger('warn', {\n                                        message: 'ignoring unknown playlist type: ' + entry.playlist\n                                    });\n                                    return;\n                                }\n                                this.manifest.playlistType = entry.playlistType;\n                            },\n                            map() {\n                                currentMap = {};\n                                if (entry.uri) {\n                                    currentMap.uri = entry.uri;\n                                }\n                                if (entry.byterange) {\n                                    currentMap.byterange = entry.byterange;\n                                }\n                                if (key) {\n                                    currentMap.key = key;\n                                }\n                            },\n                            'stream-inf'() {\n                                this.manifest.playlists = uris;\n                                this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;\n                                if (!entry.attributes) {\n                                    this.trigger('warn', {\n                                        message: 'ignoring empty stream-inf attributes'\n                                    });\n                                    return;\n                                }\n                                if (!currentUri.attributes) {\n                                    currentUri.attributes = {};\n                                }\n                                _extends$1(currentUri.attributes, entry.attributes);\n                            },\n                            media() {\n                                this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;\n                                if (!(entry.attributes && entry.attributes.TYPE && entry.attributes['GROUP-ID'] && entry.attributes.NAME)) {\n                                    this.trigger('warn', {\n                                        message: 'ignoring incomplete or missing media group'\n                                    });\n                                    return;\n                                } // find the media group, creating defaults as necessary\n\n                                const mediaGroupType = this.manifest.mediaGroups[entry.attributes.TYPE];\n                                mediaGroupType[entry.attributes['GROUP-ID']] = mediaGroupType[entry.attributes['GROUP-ID']] || {};\n                                mediaGroup = mediaGroupType[entry.attributes['GROUP-ID']]; // collect the rendition metadata\n\n                                rendition = {\n                                    default: /yes/i.test(entry.attributes.DEFAULT)\n                                };\n                                if (rendition.default) {\n                                    rendition.autoselect = true;\n                                } else {\n                                    rendition.autoselect = /yes/i.test(entry.attributes.AUTOSELECT);\n                                }\n                                if (entry.attributes.LANGUAGE) {\n                                    rendition.language = entry.attributes.LANGUAGE;\n                                }\n                                if (entry.attributes.URI) {\n                                    rendition.uri = entry.attributes.URI;\n                                }\n                                if (entry.attributes['INSTREAM-ID']) {\n                                    rendition.instreamId = entry.attributes['INSTREAM-ID'];\n                                }\n                                if (entry.attributes.CHARACTERISTICS) {\n                                    rendition.characteristics = entry.attributes.CHARACTERISTICS;\n                                }\n                                if (entry.attributes.FORCED) {\n                                    rendition.forced = /yes/i.test(entry.attributes.FORCED);\n                                } // insert the new rendition\n\n                                mediaGroup[entry.attributes.NAME] = rendition;\n                            },\n                            discontinuity() {\n                                currentTimeline += 1;\n                                currentUri.discontinuity = true;\n                                this.manifest.discontinuityStarts.push(uris.length);\n                            },\n                            'program-date-time'() {\n                                if (typeof this.manifest.dateTimeString === 'undefined') {\n                                    // PROGRAM-DATE-TIME is a media-segment tag, but for backwards\n                                    // compatibility, we add the first occurence of the PROGRAM-DATE-TIME tag\n                                    // to the manifest object\n                                    // TODO: Consider removing this in future major version\n                                    this.manifest.dateTimeString = entry.dateTimeString;\n                                    this.manifest.dateTimeObject = entry.dateTimeObject;\n                                }\n                                currentUri.dateTimeString = entry.dateTimeString;\n                                currentUri.dateTimeObject = entry.dateTimeObject;\n                            },\n                            targetduration() {\n                                if (!isFinite(entry.duration) || entry.duration < 0) {\n                                    this.trigger('warn', {\n                                        message: 'ignoring invalid target duration: ' + entry.duration\n                                    });\n                                    return;\n                                }\n                                this.manifest.targetDuration = entry.duration;\n                                setHoldBack.call(this, this.manifest);\n                            },\n                            start() {\n                                if (!entry.attributes || isNaN(entry.attributes['TIME-OFFSET'])) {\n                                    this.trigger('warn', {\n                                        message: 'ignoring start declaration without appropriate attribute list'\n                                    });\n                                    return;\n                                }\n                                this.manifest.start = {\n                                    timeOffset: entry.attributes['TIME-OFFSET'],\n                                    precise: entry.attributes.PRECISE\n                                };\n                            },\n                            'cue-out'() {\n                                currentUri.cueOut = entry.data;\n                            },\n                            'cue-out-cont'() {\n                                currentUri.cueOutCont = entry.data;\n                            },\n                            'cue-in'() {\n                                currentUri.cueIn = entry.data;\n                            },\n                            'skip'() {\n                                this.manifest.skip = camelCaseKeys(entry.attributes);\n                                this.warnOnMissingAttributes_('#EXT-X-SKIP', entry.attributes, ['SKIPPED-SEGMENTS']);\n                            },\n                            'part'() {\n                                hasParts = true; // parts are always specifed before a segment\n\n                                const segmentIndex = this.manifest.segments.length;\n                                const part = camelCaseKeys(entry.attributes);\n                                currentUri.parts = currentUri.parts || [];\n                                currentUri.parts.push(part);\n                                if (part.byterange) {\n                                    if (!part.byterange.hasOwnProperty('offset')) {\n                                        part.byterange.offset = lastPartByterangeEnd;\n                                    }\n                                    lastPartByterangeEnd = part.byterange.offset + part.byterange.length;\n                                }\n                                const partIndex = currentUri.parts.length - 1;\n                                this.warnOnMissingAttributes_(`#EXT-X-PART #${partIndex} for segment #${segmentIndex}`, entry.attributes, ['URI', 'DURATION']);\n                                if (this.manifest.renditionReports) {\n                                    this.manifest.renditionReports.forEach((r, i) => {\n                                        if (!r.hasOwnProperty('lastPart')) {\n                                            this.trigger('warn', {\n                                                message: `#EXT-X-RENDITION-REPORT #${i} lacks required attribute(s): LAST-PART`\n                                            });\n                                        }\n                                    });\n                                }\n                            },\n                            'server-control'() {\n                                const attrs = this.manifest.serverControl = camelCaseKeys(entry.attributes);\n                                if (!attrs.hasOwnProperty('canBlockReload')) {\n                                    attrs.canBlockReload = false;\n                                    this.trigger('info', {\n                                        message: '#EXT-X-SERVER-CONTROL defaulting CAN-BLOCK-RELOAD to false'\n                                    });\n                                }\n                                setHoldBack.call(this, this.manifest);\n                                if (attrs.canSkipDateranges && !attrs.hasOwnProperty('canSkipUntil')) {\n                                    this.trigger('warn', {\n                                        message: '#EXT-X-SERVER-CONTROL lacks required attribute CAN-SKIP-UNTIL which is required when CAN-SKIP-DATERANGES is set'\n                                    });\n                                }\n                            },\n                            'preload-hint'() {\n                                // parts are always specifed before a segment\n                                const segmentIndex = this.manifest.segments.length;\n                                const hint = camelCaseKeys(entry.attributes);\n                                const isPart = hint.type && hint.type === 'PART';\n                                currentUri.preloadHints = currentUri.preloadHints || [];\n                                currentUri.preloadHints.push(hint);\n                                if (hint.byterange) {\n                                    if (!hint.byterange.hasOwnProperty('offset')) {\n                                        // use last part byterange end or zero if not a part.\n                                        hint.byterange.offset = isPart ? lastPartByterangeEnd : 0;\n                                        if (isPart) {\n                                            lastPartByterangeEnd = hint.byterange.offset + hint.byterange.length;\n                                        }\n                                    }\n                                }\n                                const index = currentUri.preloadHints.length - 1;\n                                this.warnOnMissingAttributes_(`#EXT-X-PRELOAD-HINT #${index} for segment #${segmentIndex}`, entry.attributes, ['TYPE', 'URI']);\n                                if (!hint.type) {\n                                    return;\n                                } // search through all preload hints except for the current one for\n                                // a duplicate type.\n\n                                for (let i = 0; i < currentUri.preloadHints.length - 1; i++) {\n                                    const otherHint = currentUri.preloadHints[i];\n                                    if (!otherHint.type) {\n                                        continue;\n                                    }\n                                    if (otherHint.type === hint.type) {\n                                        this.trigger('warn', {\n                                            message: `#EXT-X-PRELOAD-HINT #${index} for segment #${segmentIndex} has the same TYPE ${hint.type} as preload hint #${i}`\n                                        });\n                                    }\n                                }\n                            },\n                            'rendition-report'() {\n                                const report = camelCaseKeys(entry.attributes);\n                                this.manifest.renditionReports = this.manifest.renditionReports || [];\n                                this.manifest.renditionReports.push(report);\n                                const index = this.manifest.renditionReports.length - 1;\n                                const required = ['LAST-MSN', 'URI'];\n                                if (hasParts) {\n                                    required.push('LAST-PART');\n                                }\n                                this.warnOnMissingAttributes_(`#EXT-X-RENDITION-REPORT #${index}`, entry.attributes, required);\n                            },\n                            'part-inf'() {\n                                this.manifest.partInf = camelCaseKeys(entry.attributes);\n                                this.warnOnMissingAttributes_('#EXT-X-PART-INF', entry.attributes, ['PART-TARGET']);\n                                if (this.manifest.partInf.partTarget) {\n                                    this.manifest.partTargetDuration = this.manifest.partInf.partTarget;\n                                }\n                                setHoldBack.call(this, this.manifest);\n                            }\n                        })[entry.tagType] || noop).call(self);\n                    },\n                    uri() {\n                        currentUri.uri = entry.uri;\n                        uris.push(currentUri); // if no explicit duration was declared, use the target duration\n\n                        if (this.manifest.targetDuration && !('duration' in currentUri)) {\n                            this.trigger('warn', {\n                                message: 'defaulting segment duration to the target duration'\n                            });\n                            currentUri.duration = this.manifest.targetDuration;\n                        } // annotate with encryption information, if necessary\n\n                        if (key) {\n                            currentUri.key = key;\n                        }\n                        currentUri.timeline = currentTimeline; // annotate with initialization segment information, if necessary\n\n                        if (currentMap) {\n                            currentUri.map = currentMap;\n                        } // reset the last byterange end as it needs to be 0 between parts\n\n                        lastPartByterangeEnd = 0; // prepare for the next URI\n\n                        currentUri = {};\n                    },\n                    comment() {// comments are not important for playback\n                    },\n                    custom() {\n                        // if this is segment-level data attach the output to the segment\n                        if (entry.segment) {\n                            currentUri.custom = currentUri.custom || {};\n                            currentUri.custom[entry.customType] = entry.data; // if this is manifest-level data attach to the top level manifest object\n                        } else {\n                            this.manifest.custom = this.manifest.custom || {};\n                            this.manifest.custom[entry.customType] = entry.data;\n                        }\n                    }\n                })[entry.type].call(self);\n            });\n        }\n        warnOnMissingAttributes_(identifier, attributes, required) {\n            const missing = [];\n            required.forEach(function (key) {\n                if (!attributes.hasOwnProperty(key)) {\n                    missing.push(key);\n                }\n            });\n            if (missing.length) {\n                this.trigger('warn', {\n                    message: `${identifier} lacks required attribute(s): ${missing.join(', ')}`\n                });\n            }\n        }\n        /**\n         * Parse the input string and update the manifest object.\n         *\n         * @param {string} chunk a potentially incomplete portion of the manifest\n         */\n\n        push(chunk) {\n            this.lineStream.push(chunk);\n        }\n        /**\n         * Flush any remaining input. This can be handy if the last line of an M3U8\n         * manifest did not contain a trailing newline but the file has been\n         * completely received.\n         */\n\n        end() {\n            // flush any buffered input\n            this.lineStream.push('\\n');\n            this.trigger('end');\n        }\n        /**\n         * Add an additional parser for non-standard tags\n         *\n         * @param {Object}   options              a map of options for the added parser\n         * @param {RegExp}   options.expression   a regular expression to match the custom header\n         * @param {string}   options.type         the type to register to the output\n         * @param {Function} [options.dataParser] function to parse the line into an object\n         * @param {boolean}  [options.segment]    should tag data be attached to the segment object\n         */\n\n        addParser(options) {\n            this.parseStream.addParser(options);\n        }\n        /**\n         * Add a custom header mapper\n         *\n         * @param {Object}   options\n         * @param {RegExp}   options.expression   a regular expression to match the custom header\n         * @param {Function} options.map          function to translate tag into a different tag\n         */\n\n        addTagMapper(options) {\n            this.parseStream.addTagMapper(options);\n        }\n    }\n\n    var regexs = {\n        // to determine mime types\n        mp4: /^(av0?1|avc0?[1234]|vp0?9|flac|opus|mp3|mp4a|mp4v|stpp.ttml.im1t)/,\n        webm: /^(vp0?[89]|av0?1|opus|vorbis)/,\n        ogg: /^(vp0?[89]|theora|flac|opus|vorbis)/,\n        // to determine if a codec is audio or video\n        video: /^(av0?1|avc0?[1234]|vp0?[89]|hvc1|hev1|theora|mp4v)/,\n        audio: /^(mp4a|flac|vorbis|opus|ac-[34]|ec-3|alac|mp3|speex|aac)/,\n        text: /^(stpp.ttml.im1t)/,\n        // mux.js support regex\n        muxerVideo: /^(avc0?1)/,\n        muxerAudio: /^(mp4a)/,\n        // match nothing as muxer does not support text right now.\n        // there cannot never be a character before the start of a string\n        // so this matches nothing.\n        muxerText: /a^/\n    };\n    var mediaTypes = ['video', 'audio', 'text'];\n    var upperMediaTypes = ['Video', 'Audio', 'Text'];\n    /**\n     * Replace the old apple-style `avc1.<dd>.<dd>` codec string with the standard\n     * `avc1.<hhhhhh>`\n     *\n     * @param {string} codec\n     *        Codec string to translate\n     * @return {string}\n     *         The translated codec string\n     */\n\n    var translateLegacyCodec = function translateLegacyCodec(codec) {\n        if (!codec) {\n            return codec;\n        }\n        return codec.replace(/avc1\\.(\\d+)\\.(\\d+)/i, function (orig, profile, avcLevel) {\n            var profileHex = ('00' + Number(profile).toString(16)).slice(-2);\n            var avcLevelHex = ('00' + Number(avcLevel).toString(16)).slice(-2);\n            return 'avc1.' + profileHex + '00' + avcLevelHex;\n        });\n    };\n    /**\n     * @typedef {Object} ParsedCodecInfo\n     * @property {number} codecCount\n     *           Number of codecs parsed\n     * @property {string} [videoCodec]\n     *           Parsed video codec (if found)\n     * @property {string} [videoObjectTypeIndicator]\n     *           Video object type indicator (if found)\n     * @property {string|null} audioProfile\n     *           Audio profile\n     */\n\n    /**\n     * Parses a codec string to retrieve the number of codecs specified, the video codec and\n     * object type indicator, and the audio profile.\n     *\n     * @param {string} [codecString]\n     *        The codec string to parse\n     * @return {ParsedCodecInfo}\n     *         Parsed codec info\n     */\n\n    var parseCodecs = function parseCodecs(codecString) {\n        if (codecString === void 0) {\n            codecString = '';\n        }\n        var codecs = codecString.split(',');\n        var result = [];\n        codecs.forEach(function (codec) {\n            codec = codec.trim();\n            var codecType;\n            mediaTypes.forEach(function (name) {\n                var match = regexs[name].exec(codec.toLowerCase());\n                if (!match || match.length <= 1) {\n                    return;\n                }\n                codecType = name; // maintain codec case\n\n                var type = codec.substring(0, match[1].length);\n                var details = codec.replace(type, '');\n                result.push({\n                    type: type,\n                    details: details,\n                    mediaType: name\n                });\n            });\n            if (!codecType) {\n                result.push({\n                    type: codec,\n                    details: '',\n                    mediaType: 'unknown'\n                });\n            }\n        });\n        return result;\n    };\n    /**\n     * Returns a ParsedCodecInfo object for the default alternate audio playlist if there is\n     * a default alternate audio playlist for the provided audio group.\n     *\n     * @param {Object} master\n     *        The master playlist\n     * @param {string} audioGroupId\n     *        ID of the audio group for which to find the default codec info\n     * @return {ParsedCodecInfo}\n     *         Parsed codec info\n     */\n\n    var codecsFromDefault = function codecsFromDefault(master, audioGroupId) {\n        if (!master.mediaGroups.AUDIO || !audioGroupId) {\n            return null;\n        }\n        var audioGroup = master.mediaGroups.AUDIO[audioGroupId];\n        if (!audioGroup) {\n            return null;\n        }\n        for (var name in audioGroup) {\n            var audioType = audioGroup[name];\n            if (audioType.default && audioType.playlists) {\n                // codec should be the same for all playlists within the audio type\n                return parseCodecs(audioType.playlists[0].attributes.CODECS);\n            }\n        }\n        return null;\n    };\n    var isAudioCodec = function isAudioCodec(codec) {\n        if (codec === void 0) {\n            codec = '';\n        }\n        return regexs.audio.test(codec.trim().toLowerCase());\n    };\n    var isTextCodec = function isTextCodec(codec) {\n        if (codec === void 0) {\n            codec = '';\n        }\n        return regexs.text.test(codec.trim().toLowerCase());\n    };\n    var getMimeForCodec = function getMimeForCodec(codecString) {\n        if (!codecString || typeof codecString !== 'string') {\n            return;\n        }\n        var codecs = codecString.toLowerCase().split(',').map(function (c) {\n            return translateLegacyCodec(c.trim());\n        }); // default to video type\n\n        var type = 'video'; // only change to audio type if the only codec we have is\n        // audio\n\n        if (codecs.length === 1 && isAudioCodec(codecs[0])) {\n            type = 'audio';\n        } else if (codecs.length === 1 && isTextCodec(codecs[0])) {\n            // text uses application/<container> for now\n            type = 'application';\n        } // default the container to mp4\n\n        var container = 'mp4'; // every codec must be able to go into the container\n        // for that container to be the correct one\n\n        if (codecs.every(function (c) {\n            return regexs.mp4.test(c);\n        })) {\n            container = 'mp4';\n        } else if (codecs.every(function (c) {\n            return regexs.webm.test(c);\n        })) {\n            container = 'webm';\n        } else if (codecs.every(function (c) {\n            return regexs.ogg.test(c);\n        })) {\n            container = 'ogg';\n        }\n        return type + \"/\" + container + \";codecs=\\\"\" + codecString + \"\\\"\";\n    };\n    var browserSupportsCodec = function browserSupportsCodec(codecString) {\n        if (codecString === void 0) {\n            codecString = '';\n        }\n        return window.MediaSource && window.MediaSource.isTypeSupported && window.MediaSource.isTypeSupported(getMimeForCodec(codecString)) || false;\n    };\n    var muxerSupportsCodec = function muxerSupportsCodec(codecString) {\n        if (codecString === void 0) {\n            codecString = '';\n        }\n        return codecString.toLowerCase().split(',').every(function (codec) {\n            codec = codec.trim(); // any match is supported.\n\n            for (var i = 0; i < upperMediaTypes.length; i++) {\n                var type = upperMediaTypes[i];\n                if (regexs[\"muxer\" + type].test(codec)) {\n                    return true;\n                }\n            }\n            return false;\n        });\n    };\n    var DEFAULT_AUDIO_CODEC = 'mp4a.40.2';\n    var DEFAULT_VIDEO_CODEC = 'avc1.4d400d';\n\n    var MPEGURL_REGEX = /^(audio|video|application)\\/(x-|vnd\\.apple\\.)?mpegurl/i;\n    var DASH_REGEX = /^application\\/dash\\+xml/i;\n    /**\n     * Returns a string that describes the type of source based on a video source object's\n     * media type.\n     *\n     * @see {@link https://dev.w3.org/html5/pf-summary/video.html#dom-source-type|Source Type}\n     *\n     * @param {string} type\n     *        Video source object media type\n     * @return {('hls'|'dash'|'vhs-json'|null)}\n     *         VHS source type string\n     */\n\n    var simpleTypeFromSourceType = function simpleTypeFromSourceType(type) {\n        if (MPEGURL_REGEX.test(type)) {\n            return 'hls';\n        }\n        if (DASH_REGEX.test(type)) {\n            return 'dash';\n        } // Denotes the special case of a manifest object passed to http-streaming instead of a\n        // source URL.\n        //\n        // See https://en.wikipedia.org/wiki/Media_type for details on specifying media types.\n        //\n        // In this case, vnd stands for vendor, video.js for the organization, VHS for this\n        // project, and the +json suffix identifies the structure of the media type.\n\n        if (type === 'application/vnd.videojs.vhs+json') {\n            return 'vhs-json';\n        }\n        return null;\n    };\n\n    // const log2 = Math.log2 ? Math.log2 : (x) => (Math.log(x) / Math.log(2));\n    // we used to do this with log2 but BigInt does not support builtin math\n    // Math.ceil(log2(x));\n\n    var countBits = function countBits(x) {\n        return x.toString(2).length;\n    }; // count the number of whole bytes it would take to represent a number\n\n    var countBytes = function countBytes(x) {\n        return Math.ceil(countBits(x) / 8);\n    };\n    var isArrayBufferView = function isArrayBufferView(obj) {\n        if (ArrayBuffer.isView === 'function') {\n            return ArrayBuffer.isView(obj);\n        }\n        return obj && obj.buffer instanceof ArrayBuffer;\n    };\n    var isTypedArray = function isTypedArray(obj) {\n        return isArrayBufferView(obj);\n    };\n    var toUint8 = function toUint8(bytes) {\n        if (bytes instanceof Uint8Array) {\n            return bytes;\n        }\n        if (!Array.isArray(bytes) && !isTypedArray(bytes) && !(bytes instanceof ArrayBuffer)) {\n            // any non-number or NaN leads to empty uint8array\n            // eslint-disable-next-line\n            if (typeof bytes !== 'number' || typeof bytes === 'number' && bytes !== bytes) {\n                bytes = 0;\n            } else {\n                bytes = [bytes];\n            }\n        }\n        return new Uint8Array(bytes && bytes.buffer || bytes, bytes && bytes.byteOffset || 0, bytes && bytes.byteLength || 0);\n    };\n    var BigInt = window.BigInt || Number;\n    var BYTE_TABLE = [BigInt('0x1'), BigInt('0x100'), BigInt('0x10000'), BigInt('0x1000000'), BigInt('0x100000000'), BigInt('0x10000000000'), BigInt('0x1000000000000'), BigInt('0x100000000000000'), BigInt('0x10000000000000000')];\n    (function () {\n        var a = new Uint16Array([0xFFCC]);\n        var b = new Uint8Array(a.buffer, a.byteOffset, a.byteLength);\n        if (b[0] === 0xFF) {\n            return 'big';\n        }\n        if (b[0] === 0xCC) {\n            return 'little';\n        }\n        return 'unknown';\n    })();\n    var bytesToNumber = function bytesToNumber(bytes, _temp) {\n        var _ref = _temp === void 0 ? {} : _temp,\n            _ref$signed = _ref.signed,\n            signed = _ref$signed === void 0 ? false : _ref$signed,\n            _ref$le = _ref.le,\n            le = _ref$le === void 0 ? false : _ref$le;\n        bytes = toUint8(bytes);\n        var fn = le ? 'reduce' : 'reduceRight';\n        var obj = bytes[fn] ? bytes[fn] : Array.prototype[fn];\n        var number = obj.call(bytes, function (total, byte, i) {\n            var exponent = le ? i : Math.abs(i + 1 - bytes.length);\n            return total + BigInt(byte) * BYTE_TABLE[exponent];\n        }, BigInt(0));\n        if (signed) {\n            var max = BYTE_TABLE[bytes.length] / BigInt(2) - BigInt(1);\n            number = BigInt(number);\n            if (number > max) {\n                number -= max;\n                number -= max;\n                number -= BigInt(2);\n            }\n        }\n        return Number(number);\n    };\n    var numberToBytes = function numberToBytes(number, _temp2) {\n        var _ref2 = _temp2 === void 0 ? {} : _temp2,\n            _ref2$le = _ref2.le,\n            le = _ref2$le === void 0 ? false : _ref2$le;\n\n        // eslint-disable-next-line\n        if (typeof number !== 'bigint' && typeof number !== 'number' || typeof number === 'number' && number !== number) {\n            number = 0;\n        }\n        number = BigInt(number);\n        var byteCount = countBytes(number);\n        var bytes = new Uint8Array(new ArrayBuffer(byteCount));\n        for (var i = 0; i < byteCount; i++) {\n            var byteIndex = le ? i : Math.abs(i + 1 - bytes.length);\n            bytes[byteIndex] = Number(number / BYTE_TABLE[i] & BigInt(0xFF));\n            if (number < 0) {\n                bytes[byteIndex] = Math.abs(~bytes[byteIndex]);\n                bytes[byteIndex] -= i === 0 ? 1 : 2;\n            }\n        }\n        return bytes;\n    };\n    var stringToBytes = function stringToBytes(string, stringIsBytes) {\n        if (typeof string !== 'string' && string && typeof string.toString === 'function') {\n            string = string.toString();\n        }\n        if (typeof string !== 'string') {\n            return new Uint8Array();\n        } // If the string already is bytes, we don't have to do this\n        // otherwise we do this so that we split multi length characters\n        // into individual bytes\n\n        if (!stringIsBytes) {\n            string = unescape(encodeURIComponent(string));\n        }\n        var view = new Uint8Array(string.length);\n        for (var i = 0; i < string.length; i++) {\n            view[i] = string.charCodeAt(i);\n        }\n        return view;\n    };\n    var concatTypedArrays = function concatTypedArrays() {\n        for (var _len = arguments.length, buffers = new Array(_len), _key = 0; _key < _len; _key++) {\n            buffers[_key] = arguments[_key];\n        }\n        buffers = buffers.filter(function (b) {\n            return b && (b.byteLength || b.length) && typeof b !== 'string';\n        });\n        if (buffers.length <= 1) {\n            // for 0 length we will return empty uint8\n            // for 1 length we return the first uint8\n            return toUint8(buffers[0]);\n        }\n        var totalLen = buffers.reduce(function (total, buf, i) {\n            return total + (buf.byteLength || buf.length);\n        }, 0);\n        var tempBuffer = new Uint8Array(totalLen);\n        var offset = 0;\n        buffers.forEach(function (buf) {\n            buf = toUint8(buf);\n            tempBuffer.set(buf, offset);\n            offset += buf.byteLength;\n        });\n        return tempBuffer;\n    };\n    /**\n     * Check if the bytes \"b\" are contained within bytes \"a\".\n     *\n     * @param {Uint8Array|Array} a\n     *        Bytes to check in\n     *\n     * @param {Uint8Array|Array} b\n     *        Bytes to check for\n     *\n     * @param {Object} options\n     *        options\n     *\n     * @param {Array|Uint8Array} [offset=0]\n     *        offset to use when looking at bytes in a\n     *\n     * @param {Array|Uint8Array} [mask=[]]\n     *        mask to use on bytes before comparison.\n     *\n     * @return {boolean}\n     *         If all bytes in b are inside of a, taking into account\n     *         bit masks.\n     */\n\n    var bytesMatch = function bytesMatch(a, b, _temp3) {\n        var _ref3 = _temp3 === void 0 ? {} : _temp3,\n            _ref3$offset = _ref3.offset,\n            offset = _ref3$offset === void 0 ? 0 : _ref3$offset,\n            _ref3$mask = _ref3.mask,\n            mask = _ref3$mask === void 0 ? [] : _ref3$mask;\n        a = toUint8(a);\n        b = toUint8(b); // ie 11 does not support uint8 every\n\n        var fn = b.every ? b.every : Array.prototype.every;\n        return b.length && a.length - offset >= b.length &&\n            // ie 11 doesn't support every on uin8\n            fn.call(b, function (bByte, i) {\n                var aByte = mask[i] ? mask[i] & a[offset + i] : a[offset + i];\n                return bByte === aByte;\n            });\n    };\n\n    var DEFAULT_LOCATION = 'http://example.com';\n    var resolveUrl$1 = function resolveUrl(baseUrl, relativeUrl) {\n        // return early if we don't need to resolve\n        if (/^[a-z]+:/i.test(relativeUrl)) {\n            return relativeUrl;\n        } // if baseUrl is a data URI, ignore it and resolve everything relative to window.location\n\n        if (/^data:/.test(baseUrl)) {\n            baseUrl = window.location && window.location.href || '';\n        } // IE11 supports URL but not the URL constructor\n        // feature detect the behavior we want\n\n        var nativeURL = typeof window.URL === 'function';\n        var protocolLess = /^\\/\\//.test(baseUrl); // remove location if window.location isn't available (i.e. we're in node)\n        // and if baseUrl isn't an absolute url\n\n        var removeLocation = !window.location && !/\\/\\//i.test(baseUrl); // if the base URL is relative then combine with the current location\n\n        if (nativeURL) {\n            baseUrl = new window.URL(baseUrl, window.location || DEFAULT_LOCATION);\n        } else if (!/\\/\\//i.test(baseUrl)) {\n            baseUrl = urlToolkit.buildAbsoluteURL(window.location && window.location.href || '', baseUrl);\n        }\n        if (nativeURL) {\n            var newUrl = new URL(relativeUrl, baseUrl); // if we're a protocol-less url, remove the protocol\n            // and if we're location-less, remove the location\n            // otherwise, return the url unmodified\n\n            if (removeLocation) {\n                return newUrl.href.slice(DEFAULT_LOCATION.length);\n            } else if (protocolLess) {\n                return newUrl.href.slice(newUrl.protocol.length);\n            }\n            return newUrl.href;\n        }\n        return urlToolkit.buildAbsoluteURL(baseUrl, relativeUrl);\n    };\n\n    /**\n     * Loops through all supported media groups in master and calls the provided\n     * callback for each group\n     *\n     * @param {Object} master\n     *        The parsed master manifest object\n     * @param {string[]} groups\n     *        The media groups to call the callback for\n     * @param {Function} callback\n     *        Callback to call for each media group\n     */\n    var forEachMediaGroup$1 = function forEachMediaGroup(master, groups, callback) {\n        groups.forEach(function (mediaType) {\n            for (var groupKey in master.mediaGroups[mediaType]) {\n                for (var labelKey in master.mediaGroups[mediaType][groupKey]) {\n                    var mediaProperties = master.mediaGroups[mediaType][groupKey][labelKey];\n                    callback(mediaProperties, mediaType, groupKey, labelKey);\n                }\n            }\n        });\n    };\n\n    var atob = function atob(s) {\n        return window.atob ? window.atob(s) : Buffer.from(s, 'base64').toString('binary');\n    };\n    function decodeB64ToUint8Array(b64Text) {\n        var decodedString = atob(b64Text);\n        var array = new Uint8Array(decodedString.length);\n        for (var i = 0; i < decodedString.length; i++) {\n            array[i] = decodedString.charCodeAt(i);\n        }\n        return array;\n    }\n\n    /**\n     * Ponyfill for `Array.prototype.find` which is only available in ES6 runtimes.\n     *\n     * Works with anything that has a `length` property and index access properties, including NodeList.\n     *\n     * @template {unknown} T\n     * @param {Array<T> | ({length:number, [number]: T})} list\n     * @param {function (item: T, index: number, list:Array<T> | ({length:number, [number]: T})):boolean} predicate\n     * @param {Partial<Pick<ArrayConstructor['prototype'], 'find'>>?} ac `Array.prototype` by default,\n     * \t\t\t\tallows injecting a custom implementation in tests\n     * @returns {T | undefined}\n     *\n     * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find\n     * @see https://tc39.es/ecma262/multipage/indexed-collections.html#sec-array.prototype.find\n     */\n    function find$1(list, predicate, ac) {\n        if (ac === undefined) {\n            ac = Array.prototype;\n        }\n        if (list && typeof ac.find === 'function') {\n            return ac.find.call(list, predicate);\n        }\n        for (var i = 0; i < list.length; i++) {\n            if (Object.prototype.hasOwnProperty.call(list, i)) {\n                var item = list[i];\n                if (predicate.call(undefined, item, i, list)) {\n                    return item;\n                }\n            }\n        }\n    }\n\n    /**\n     * \"Shallow freezes\" an object to render it immutable.\n     * Uses `Object.freeze` if available,\n     * otherwise the immutability is only in the type.\n     *\n     * Is used to create \"enum like\" objects.\n     *\n     * @template T\n     * @param {T} object the object to freeze\n     * @param {Pick<ObjectConstructor, 'freeze'> = Object} oc `Object` by default,\n     * \t\t\t\tallows to inject custom object constructor for tests\n     * @returns {Readonly<T>}\n     *\n     * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze\n     */\n    function freeze(object, oc) {\n        if (oc === undefined) {\n            oc = Object;\n        }\n        return oc && typeof oc.freeze === 'function' ? oc.freeze(object) : object;\n    }\n\n    /**\n     * Since we can not rely on `Object.assign` we provide a simplified version\n     * that is sufficient for our needs.\n     *\n     * @param {Object} target\n     * @param {Object | null | undefined} source\n     *\n     * @returns {Object} target\n     * @throws TypeError if target is not an object\n     *\n     * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign\n     * @see https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object.assign\n     */\n    function assign(target, source) {\n        if (target === null || typeof target !== 'object') {\n            throw new TypeError('target is not an object');\n        }\n        for (var key in source) {\n            if (Object.prototype.hasOwnProperty.call(source, key)) {\n                target[key] = source[key];\n            }\n        }\n        return target;\n    }\n\n    /**\n     * All mime types that are allowed as input to `DOMParser.parseFromString`\n     *\n     * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString#Argument02 MDN\n     * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#domparsersupportedtype WHATWG HTML Spec\n     * @see DOMParser.prototype.parseFromString\n     */\n    var MIME_TYPE = freeze({\n        /**\n         * `text/html`, the only mime type that triggers treating an XML document as HTML.\n         *\n         * @see DOMParser.SupportedType.isHTML\n         * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration\n         * @see https://en.wikipedia.org/wiki/HTML Wikipedia\n         * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN\n         * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring WHATWG HTML Spec\n         */\n        HTML: 'text/html',\n        /**\n         * Helper method to check a mime type if it indicates an HTML document\n         *\n         * @param {string} [value]\n         * @returns {boolean}\n         *\n         * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration\n         * @see https://en.wikipedia.org/wiki/HTML Wikipedia\n         * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN\n         * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring \t */\n        isHTML: function (value) {\n            return value === MIME_TYPE.HTML;\n        },\n        /**\n         * `application/xml`, the standard mime type for XML documents.\n         *\n         * @see https://www.iana.org/assignments/media-types/application/xml IANA MimeType registration\n         * @see https://tools.ietf.org/html/rfc7303#section-9.1 RFC 7303\n         * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia\n         */\n        XML_APPLICATION: 'application/xml',\n        /**\n         * `text/html`, an alias for `application/xml`.\n         *\n         * @see https://tools.ietf.org/html/rfc7303#section-9.2 RFC 7303\n         * @see https://www.iana.org/assignments/media-types/text/xml IANA MimeType registration\n         * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia\n         */\n        XML_TEXT: 'text/xml',\n        /**\n         * `application/xhtml+xml`, indicates an XML document that has the default HTML namespace,\n         * but is parsed as an XML document.\n         *\n         * @see https://www.iana.org/assignments/media-types/application/xhtml+xml IANA MimeType registration\n         * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument WHATWG DOM Spec\n         * @see https://en.wikipedia.org/wiki/XHTML Wikipedia\n         */\n        XML_XHTML_APPLICATION: 'application/xhtml+xml',\n        /**\n         * `image/svg+xml`,\n         *\n         * @see https://www.iana.org/assignments/media-types/image/svg+xml IANA MimeType registration\n         * @see https://www.w3.org/TR/SVG11/ W3C SVG 1.1\n         * @see https://en.wikipedia.org/wiki/Scalable_Vector_Graphics Wikipedia\n         */\n        XML_SVG_IMAGE: 'image/svg+xml'\n    });\n\n    /**\n     * Namespaces that are used in this code base.\n     *\n     * @see http://www.w3.org/TR/REC-xml-names\n     */\n    var NAMESPACE$3 = freeze({\n        /**\n         * The XHTML namespace.\n         *\n         * @see http://www.w3.org/1999/xhtml\n         */\n        HTML: 'http://www.w3.org/1999/xhtml',\n        /**\n         * Checks if `uri` equals `NAMESPACE.HTML`.\n         *\n         * @param {string} [uri]\n         *\n         * @see NAMESPACE.HTML\n         */\n        isHTML: function (uri) {\n            return uri === NAMESPACE$3.HTML;\n        },\n        /**\n         * The SVG namespace.\n         *\n         * @see http://www.w3.org/2000/svg\n         */\n        SVG: 'http://www.w3.org/2000/svg',\n        /**\n         * The `xml:` namespace.\n         *\n         * @see http://www.w3.org/XML/1998/namespace\n         */\n        XML: 'http://www.w3.org/XML/1998/namespace',\n        /**\n         * The `xmlns:` namespace\n         *\n         * @see https://www.w3.org/2000/xmlns/\n         */\n        XMLNS: 'http://www.w3.org/2000/xmlns/'\n    });\n    var assign_1 = assign;\n    var find_1 = find$1;\n    var freeze_1 = freeze;\n    var MIME_TYPE_1 = MIME_TYPE;\n    var NAMESPACE_1 = NAMESPACE$3;\n    var conventions = {\n        assign: assign_1,\n        find: find_1,\n        freeze: freeze_1,\n        MIME_TYPE: MIME_TYPE_1,\n        NAMESPACE: NAMESPACE_1\n    };\n\n    var find = conventions.find;\n    var NAMESPACE$2 = conventions.NAMESPACE;\n\n    /**\n     * A prerequisite for `[].filter`, to drop elements that are empty\n     * @param {string} input\n     * @returns {boolean}\n     */\n    function notEmptyString(input) {\n        return input !== '';\n    }\n    /**\n     * @see https://infra.spec.whatwg.org/#split-on-ascii-whitespace\n     * @see https://infra.spec.whatwg.org/#ascii-whitespace\n     *\n     * @param {string} input\n     * @returns {string[]} (can be empty)\n     */\n    function splitOnASCIIWhitespace(input) {\n        // U+0009 TAB, U+000A LF, U+000C FF, U+000D CR, U+0020 SPACE\n        return input ? input.split(/[\\t\\n\\f\\r ]+/).filter(notEmptyString) : [];\n    }\n\n    /**\n     * Adds element as a key to current if it is not already present.\n     *\n     * @param {Record<string, boolean | undefined>} current\n     * @param {string} element\n     * @returns {Record<string, boolean | undefined>}\n     */\n    function orderedSetReducer(current, element) {\n        if (!current.hasOwnProperty(element)) {\n            current[element] = true;\n        }\n        return current;\n    }\n\n    /**\n     * @see https://infra.spec.whatwg.org/#ordered-set\n     * @param {string} input\n     * @returns {string[]}\n     */\n    function toOrderedSet(input) {\n        if (!input) return [];\n        var list = splitOnASCIIWhitespace(input);\n        return Object.keys(list.reduce(orderedSetReducer, {}));\n    }\n\n    /**\n     * Uses `list.indexOf` to implement something like `Array.prototype.includes`,\n     * which we can not rely on being available.\n     *\n     * @param {any[]} list\n     * @returns {function(any): boolean}\n     */\n    function arrayIncludes(list) {\n        return function (element) {\n            return list && list.indexOf(element) !== -1;\n        };\n    }\n    function copy(src, dest) {\n        for (var p in src) {\n            if (Object.prototype.hasOwnProperty.call(src, p)) {\n                dest[p] = src[p];\n            }\n        }\n    }\n\n    /**\n     ^\\w+\\.prototype\\.([_\\w]+)\\s*=\\s*((?:.*\\{\\s*?[\\r\\n][\\s\\S]*?^})|\\S.*?(?=[;\\r\\n]));?\n     ^\\w+\\.prototype\\.([_\\w]+)\\s*=\\s*(\\S.*?(?=[;\\r\\n]));?\n     */\n    function _extends(Class, Super) {\n        var pt = Class.prototype;\n        if (!(pt instanceof Super)) {\n            function t() {}\n            t.prototype = Super.prototype;\n            t = new t();\n            copy(pt, t);\n            Class.prototype = pt = t;\n        }\n        if (pt.constructor != Class) {\n            if (typeof Class != 'function') {\n                console.error(\"unknown Class:\" + Class);\n            }\n            pt.constructor = Class;\n        }\n    }\n\n    // Node Types\n    var NodeType = {};\n    var ELEMENT_NODE = NodeType.ELEMENT_NODE = 1;\n    var ATTRIBUTE_NODE = NodeType.ATTRIBUTE_NODE = 2;\n    var TEXT_NODE = NodeType.TEXT_NODE = 3;\n    var CDATA_SECTION_NODE = NodeType.CDATA_SECTION_NODE = 4;\n    var ENTITY_REFERENCE_NODE = NodeType.ENTITY_REFERENCE_NODE = 5;\n    var ENTITY_NODE = NodeType.ENTITY_NODE = 6;\n    var PROCESSING_INSTRUCTION_NODE = NodeType.PROCESSING_INSTRUCTION_NODE = 7;\n    var COMMENT_NODE = NodeType.COMMENT_NODE = 8;\n    var DOCUMENT_NODE = NodeType.DOCUMENT_NODE = 9;\n    var DOCUMENT_TYPE_NODE = NodeType.DOCUMENT_TYPE_NODE = 10;\n    var DOCUMENT_FRAGMENT_NODE = NodeType.DOCUMENT_FRAGMENT_NODE = 11;\n    var NOTATION_NODE = NodeType.NOTATION_NODE = 12;\n\n    // ExceptionCode\n    var ExceptionCode = {};\n    var ExceptionMessage = {};\n    ExceptionCode.INDEX_SIZE_ERR = (ExceptionMessage[1] = \"Index size error\", 1);\n    ExceptionCode.DOMSTRING_SIZE_ERR = (ExceptionMessage[2] = \"DOMString size error\", 2);\n    var HIERARCHY_REQUEST_ERR = ExceptionCode.HIERARCHY_REQUEST_ERR = (ExceptionMessage[3] = \"Hierarchy request error\", 3);\n    ExceptionCode.WRONG_DOCUMENT_ERR = (ExceptionMessage[4] = \"Wrong document\", 4);\n    ExceptionCode.INVALID_CHARACTER_ERR = (ExceptionMessage[5] = \"Invalid character\", 5);\n    ExceptionCode.NO_DATA_ALLOWED_ERR = (ExceptionMessage[6] = \"No data allowed\", 6);\n    ExceptionCode.NO_MODIFICATION_ALLOWED_ERR = (ExceptionMessage[7] = \"No modification allowed\", 7);\n    var NOT_FOUND_ERR = ExceptionCode.NOT_FOUND_ERR = (ExceptionMessage[8] = \"Not found\", 8);\n    ExceptionCode.NOT_SUPPORTED_ERR = (ExceptionMessage[9] = \"Not supported\", 9);\n    var INUSE_ATTRIBUTE_ERR = ExceptionCode.INUSE_ATTRIBUTE_ERR = (ExceptionMessage[10] = \"Attribute in use\", 10);\n    //level2\n    ExceptionCode.INVALID_STATE_ERR = (ExceptionMessage[11] = \"Invalid state\", 11);\n    ExceptionCode.SYNTAX_ERR = (ExceptionMessage[12] = \"Syntax error\", 12);\n    ExceptionCode.INVALID_MODIFICATION_ERR = (ExceptionMessage[13] = \"Invalid modification\", 13);\n    ExceptionCode.NAMESPACE_ERR = (ExceptionMessage[14] = \"Invalid namespace\", 14);\n    ExceptionCode.INVALID_ACCESS_ERR = (ExceptionMessage[15] = \"Invalid access\", 15);\n\n    /**\n     * DOM Level 2\n     * Object DOMException\n     * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/ecma-script-binding.html\n     * @see http://www.w3.org/TR/REC-DOM-Level-1/ecma-script-language-binding.html\n     */\n    function DOMException(code, message) {\n        if (message instanceof Error) {\n            var error = message;\n        } else {\n            error = this;\n            Error.call(this, ExceptionMessage[code]);\n            this.message = ExceptionMessage[code];\n            if (Error.captureStackTrace) Error.captureStackTrace(this, DOMException);\n        }\n        error.code = code;\n        if (message) this.message = this.message + \": \" + message;\n        return error;\n    }\n    DOMException.prototype = Error.prototype;\n    copy(ExceptionCode, DOMException);\n\n    /**\n     * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-536297177\n     * The NodeList interface provides the abstraction of an ordered collection of nodes, without defining or constraining how this collection is implemented. NodeList objects in the DOM are live.\n     * The items in the NodeList are accessible via an integral index, starting from 0.\n     */\n    function NodeList() {}\n    NodeList.prototype = {\n        /**\n         * The number of nodes in the list. The range of valid child node indices is 0 to length-1 inclusive.\n         * @standard level1\n         */\n        length: 0,\n        /**\n         * Returns the indexth item in the collection. If index is greater than or equal to the number of nodes in the list, this returns null.\n         * @standard level1\n         * @param index  unsigned long\n         *   Index into the collection.\n         * @return Node\n         * \tThe node at the indexth position in the NodeList, or null if that is not a valid index.\n         */\n        item: function (index) {\n            return this[index] || null;\n        },\n        toString: function (isHTML, nodeFilter) {\n            for (var buf = [], i = 0; i < this.length; i++) {\n                serializeToString(this[i], buf, isHTML, nodeFilter);\n            }\n            return buf.join('');\n        },\n        /**\n         * @private\n         * @param {function (Node):boolean} predicate\n         * @returns {Node[]}\n         */\n        filter: function (predicate) {\n            return Array.prototype.filter.call(this, predicate);\n        },\n        /**\n         * @private\n         * @param {Node} item\n         * @returns {number}\n         */\n        indexOf: function (item) {\n            return Array.prototype.indexOf.call(this, item);\n        }\n    };\n    function LiveNodeList(node, refresh) {\n        this._node = node;\n        this._refresh = refresh;\n        _updateLiveList(this);\n    }\n    function _updateLiveList(list) {\n        var inc = list._node._inc || list._node.ownerDocument._inc;\n        if (list._inc != inc) {\n            var ls = list._refresh(list._node);\n            //console.log(ls.length)\n            __set__(list, 'length', ls.length);\n            copy(ls, list);\n            list._inc = inc;\n        }\n    }\n    LiveNodeList.prototype.item = function (i) {\n        _updateLiveList(this);\n        return this[i];\n    };\n    _extends(LiveNodeList, NodeList);\n\n    /**\n     * Objects implementing the NamedNodeMap interface are used\n     * to represent collections of nodes that can be accessed by name.\n     * Note that NamedNodeMap does not inherit from NodeList;\n     * NamedNodeMaps are not maintained in any particular order.\n     * Objects contained in an object implementing NamedNodeMap may also be accessed by an ordinal index,\n     * but this is simply to allow convenient enumeration of the contents of a NamedNodeMap,\n     * and does not imply that the DOM specifies an order to these Nodes.\n     * NamedNodeMap objects in the DOM are live.\n     * used for attributes or DocumentType entities\n     */\n    function NamedNodeMap() {}\n    function _findNodeIndex(list, node) {\n        var i = list.length;\n        while (i--) {\n            if (list[i] === node) {\n                return i;\n            }\n        }\n    }\n    function _addNamedNode(el, list, newAttr, oldAttr) {\n        if (oldAttr) {\n            list[_findNodeIndex(list, oldAttr)] = newAttr;\n        } else {\n            list[list.length++] = newAttr;\n        }\n        if (el) {\n            newAttr.ownerElement = el;\n            var doc = el.ownerDocument;\n            if (doc) {\n                oldAttr && _onRemoveAttribute(doc, el, oldAttr);\n                _onAddAttribute(doc, el, newAttr);\n            }\n        }\n    }\n    function _removeNamedNode(el, list, attr) {\n        //console.log('remove attr:'+attr)\n        var i = _findNodeIndex(list, attr);\n        if (i >= 0) {\n            var lastIndex = list.length - 1;\n            while (i < lastIndex) {\n                list[i] = list[++i];\n            }\n            list.length = lastIndex;\n            if (el) {\n                var doc = el.ownerDocument;\n                if (doc) {\n                    _onRemoveAttribute(doc, el, attr);\n                    attr.ownerElement = null;\n                }\n            }\n        } else {\n            throw new DOMException(NOT_FOUND_ERR, new Error(el.tagName + '@' + attr));\n        }\n    }\n    NamedNodeMap.prototype = {\n        length: 0,\n        item: NodeList.prototype.item,\n        getNamedItem: function (key) {\n            //\t\tif(key.indexOf(':')>0 || key == 'xmlns'){\n            //\t\t\treturn null;\n            //\t\t}\n            //console.log()\n            var i = this.length;\n            while (i--) {\n                var attr = this[i];\n                //console.log(attr.nodeName,key)\n                if (attr.nodeName == key) {\n                    return attr;\n                }\n            }\n        },\n        setNamedItem: function (attr) {\n            var el = attr.ownerElement;\n            if (el && el != this._ownerElement) {\n                throw new DOMException(INUSE_ATTRIBUTE_ERR);\n            }\n            var oldAttr = this.getNamedItem(attr.nodeName);\n            _addNamedNode(this._ownerElement, this, attr, oldAttr);\n            return oldAttr;\n        },\n        /* returns Node */\n        setNamedItemNS: function (attr) {\n            // raises: WRONG_DOCUMENT_ERR,NO_MODIFICATION_ALLOWED_ERR,INUSE_ATTRIBUTE_ERR\n            var el = attr.ownerElement,\n                oldAttr;\n            if (el && el != this._ownerElement) {\n                throw new DOMException(INUSE_ATTRIBUTE_ERR);\n            }\n            oldAttr = this.getNamedItemNS(attr.namespaceURI, attr.localName);\n            _addNamedNode(this._ownerElement, this, attr, oldAttr);\n            return oldAttr;\n        },\n        /* returns Node */\n        removeNamedItem: function (key) {\n            var attr = this.getNamedItem(key);\n            _removeNamedNode(this._ownerElement, this, attr);\n            return attr;\n        },\n        // raises: NOT_FOUND_ERR,NO_MODIFICATION_ALLOWED_ERR\n\n        //for level2\n        removeNamedItemNS: function (namespaceURI, localName) {\n            var attr = this.getNamedItemNS(namespaceURI, localName);\n            _removeNamedNode(this._ownerElement, this, attr);\n            return attr;\n        },\n        getNamedItemNS: function (namespaceURI, localName) {\n            var i = this.length;\n            while (i--) {\n                var node = this[i];\n                if (node.localName == localName && node.namespaceURI == namespaceURI) {\n                    return node;\n                }\n            }\n            return null;\n        }\n    };\n\n    /**\n     * The DOMImplementation interface represents an object providing methods\n     * which are not dependent on any particular document.\n     * Such an object is returned by the `Document.implementation` property.\n     *\n     * __The individual methods describe the differences compared to the specs.__\n     *\n     * @constructor\n     *\n     * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation MDN\n     * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-102161490 DOM Level 1 Core (Initial)\n     * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#ID-102161490 DOM Level 2 Core\n     * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-102161490 DOM Level 3 Core\n     * @see https://dom.spec.whatwg.org/#domimplementation DOM Living Standard\n     */\n    function DOMImplementation$1() {}\n    DOMImplementation$1.prototype = {\n        /**\n         * The DOMImplementation.hasFeature() method returns a Boolean flag indicating if a given feature is supported.\n         * The different implementations fairly diverged in what kind of features were reported.\n         * The latest version of the spec settled to force this method to always return true, where the functionality was accurate and in use.\n         *\n         * @deprecated It is deprecated and modern browsers return true in all cases.\n         *\n         * @param {string} feature\n         * @param {string} [version]\n         * @returns {boolean} always true\n         *\n         * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/hasFeature MDN\n         * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-5CED94D7 DOM Level 1 Core\n         * @see https://dom.spec.whatwg.org/#dom-domimplementation-hasfeature DOM Living Standard\n         */\n        hasFeature: function (feature, version) {\n            return true;\n        },\n        /**\n         * Creates an XML Document object of the specified type with its document element.\n         *\n         * __It behaves slightly different from the description in the living standard__:\n         * - There is no interface/class `XMLDocument`, it returns a `Document` instance.\n         * - `contentType`, `encoding`, `mode`, `origin`, `url` fields are currently not declared.\n         * - this implementation is not validating names or qualified names\n         *   (when parsing XML strings, the SAX parser takes care of that)\n         *\n         * @param {string|null} namespaceURI\n         * @param {string} qualifiedName\n         * @param {DocumentType=null} doctype\n         * @returns {Document}\n         *\n         * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocument MDN\n         * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocument DOM Level 2 Core (initial)\n         * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument  DOM Level 2 Core\n         *\n         * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract\n         * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names\n         * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names\n         */\n        createDocument: function (namespaceURI, qualifiedName, doctype) {\n            var doc = new Document();\n            doc.implementation = this;\n            doc.childNodes = new NodeList();\n            doc.doctype = doctype || null;\n            if (doctype) {\n                doc.appendChild(doctype);\n            }\n            if (qualifiedName) {\n                var root = doc.createElementNS(namespaceURI, qualifiedName);\n                doc.appendChild(root);\n            }\n            return doc;\n        },\n        /**\n         * Returns a doctype, with the given `qualifiedName`, `publicId`, and `systemId`.\n         *\n         * __This behavior is slightly different from the in the specs__:\n         * - this implementation is not validating names or qualified names\n         *   (when parsing XML strings, the SAX parser takes care of that)\n         *\n         * @param {string} qualifiedName\n         * @param {string} [publicId]\n         * @param {string} [systemId]\n         * @returns {DocumentType} which can either be used with `DOMImplementation.createDocument` upon document creation\n         * \t\t\t\t  or can be put into the document via methods like `Node.insertBefore()` or `Node.replaceChild()`\n         *\n         * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocumentType MDN\n         * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocType DOM Level 2 Core\n         * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocumenttype DOM Living Standard\n         *\n         * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract\n         * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names\n         * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names\n         */\n        createDocumentType: function (qualifiedName, publicId, systemId) {\n            var node = new DocumentType();\n            node.name = qualifiedName;\n            node.nodeName = qualifiedName;\n            node.publicId = publicId || '';\n            node.systemId = systemId || '';\n            return node;\n        }\n    };\n\n    /**\n     * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-1950641247\n     */\n\n    function Node() {}\n    Node.prototype = {\n        firstChild: null,\n        lastChild: null,\n        previousSibling: null,\n        nextSibling: null,\n        attributes: null,\n        parentNode: null,\n        childNodes: null,\n        ownerDocument: null,\n        nodeValue: null,\n        namespaceURI: null,\n        prefix: null,\n        localName: null,\n        // Modified in DOM Level 2:\n        insertBefore: function (newChild, refChild) {\n            //raises\n            return _insertBefore(this, newChild, refChild);\n        },\n        replaceChild: function (newChild, oldChild) {\n            //raises\n            _insertBefore(this, newChild, oldChild, assertPreReplacementValidityInDocument);\n            if (oldChild) {\n                this.removeChild(oldChild);\n            }\n        },\n        removeChild: function (oldChild) {\n            return _removeChild(this, oldChild);\n        },\n        appendChild: function (newChild) {\n            return this.insertBefore(newChild, null);\n        },\n        hasChildNodes: function () {\n            return this.firstChild != null;\n        },\n        cloneNode: function (deep) {\n            return cloneNode(this.ownerDocument || this, this, deep);\n        },\n        // Modified in DOM Level 2:\n        normalize: function () {\n            var child = this.firstChild;\n            while (child) {\n                var next = child.nextSibling;\n                if (next && next.nodeType == TEXT_NODE && child.nodeType == TEXT_NODE) {\n                    this.removeChild(next);\n                    child.appendData(next.data);\n                } else {\n                    child.normalize();\n                    child = next;\n                }\n            }\n        },\n        // Introduced in DOM Level 2:\n        isSupported: function (feature, version) {\n            return this.ownerDocument.implementation.hasFeature(feature, version);\n        },\n        // Introduced in DOM Level 2:\n        hasAttributes: function () {\n            return this.attributes.length > 0;\n        },\n        /**\n         * Look up the prefix associated to the given namespace URI, starting from this node.\n         * **The default namespace declarations are ignored by this method.**\n         * See Namespace Prefix Lookup for details on the algorithm used by this method.\n         *\n         * _Note: The implementation seems to be incomplete when compared to the algorithm described in the specs._\n         *\n         * @param {string | null} namespaceURI\n         * @returns {string | null}\n         * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-lookupNamespacePrefix\n         * @see https://www.w3.org/TR/DOM-Level-3-Core/namespaces-algorithms.html#lookupNamespacePrefixAlgo\n         * @see https://dom.spec.whatwg.org/#dom-node-lookupprefix\n         * @see https://github.com/xmldom/xmldom/issues/322\n         */\n        lookupPrefix: function (namespaceURI) {\n            var el = this;\n            while (el) {\n                var map = el._nsMap;\n                //console.dir(map)\n                if (map) {\n                    for (var n in map) {\n                        if (Object.prototype.hasOwnProperty.call(map, n) && map[n] === namespaceURI) {\n                            return n;\n                        }\n                    }\n                }\n                el = el.nodeType == ATTRIBUTE_NODE ? el.ownerDocument : el.parentNode;\n            }\n            return null;\n        },\n        // Introduced in DOM Level 3:\n        lookupNamespaceURI: function (prefix) {\n            var el = this;\n            while (el) {\n                var map = el._nsMap;\n                //console.dir(map)\n                if (map) {\n                    if (Object.prototype.hasOwnProperty.call(map, prefix)) {\n                        return map[prefix];\n                    }\n                }\n                el = el.nodeType == ATTRIBUTE_NODE ? el.ownerDocument : el.parentNode;\n            }\n            return null;\n        },\n        // Introduced in DOM Level 3:\n        isDefaultNamespace: function (namespaceURI) {\n            var prefix = this.lookupPrefix(namespaceURI);\n            return prefix == null;\n        }\n    };\n    function _xmlEncoder(c) {\n        return c == '<' && '&lt;' || c == '>' && '&gt;' || c == '&' && '&amp;' || c == '\"' && '&quot;' || '&#' + c.charCodeAt() + ';';\n    }\n    copy(NodeType, Node);\n    copy(NodeType, Node.prototype);\n\n    /**\n     * @param callback return true for continue,false for break\n     * @return boolean true: break visit;\n     */\n    function _visitNode(node, callback) {\n        if (callback(node)) {\n            return true;\n        }\n        if (node = node.firstChild) {\n            do {\n                if (_visitNode(node, callback)) {\n                    return true;\n                }\n            } while (node = node.nextSibling);\n        }\n    }\n    function Document() {\n        this.ownerDocument = this;\n    }\n    function _onAddAttribute(doc, el, newAttr) {\n        doc && doc._inc++;\n        var ns = newAttr.namespaceURI;\n        if (ns === NAMESPACE$2.XMLNS) {\n            //update namespace\n            el._nsMap[newAttr.prefix ? newAttr.localName : ''] = newAttr.value;\n        }\n    }\n    function _onRemoveAttribute(doc, el, newAttr, remove) {\n        doc && doc._inc++;\n        var ns = newAttr.namespaceURI;\n        if (ns === NAMESPACE$2.XMLNS) {\n            //update namespace\n            delete el._nsMap[newAttr.prefix ? newAttr.localName : ''];\n        }\n    }\n\n    /**\n     * Updates `el.childNodes`, updating the indexed items and it's `length`.\n     * Passing `newChild` means it will be appended.\n     * Otherwise it's assumed that an item has been removed,\n     * and `el.firstNode` and it's `.nextSibling` are used\n     * to walk the current list of child nodes.\n     *\n     * @param {Document} doc\n     * @param {Node} el\n     * @param {Node} [newChild]\n     * @private\n     */\n    function _onUpdateChild(doc, el, newChild) {\n        if (doc && doc._inc) {\n            doc._inc++;\n            //update childNodes\n            var cs = el.childNodes;\n            if (newChild) {\n                cs[cs.length++] = newChild;\n            } else {\n                var child = el.firstChild;\n                var i = 0;\n                while (child) {\n                    cs[i++] = child;\n                    child = child.nextSibling;\n                }\n                cs.length = i;\n                delete cs[cs.length];\n            }\n        }\n    }\n\n    /**\n     * Removes the connections between `parentNode` and `child`\n     * and any existing `child.previousSibling` or `child.nextSibling`.\n     *\n     * @see https://github.com/xmldom/xmldom/issues/135\n     * @see https://github.com/xmldom/xmldom/issues/145\n     *\n     * @param {Node} parentNode\n     * @param {Node} child\n     * @returns {Node} the child that was removed.\n     * @private\n     */\n    function _removeChild(parentNode, child) {\n        var previous = child.previousSibling;\n        var next = child.nextSibling;\n        if (previous) {\n            previous.nextSibling = next;\n        } else {\n            parentNode.firstChild = next;\n        }\n        if (next) {\n            next.previousSibling = previous;\n        } else {\n            parentNode.lastChild = previous;\n        }\n        child.parentNode = null;\n        child.previousSibling = null;\n        child.nextSibling = null;\n        _onUpdateChild(parentNode.ownerDocument, parentNode);\n        return child;\n    }\n\n    /**\n     * Returns `true` if `node` can be a parent for insertion.\n     * @param {Node} node\n     * @returns {boolean}\n     */\n    function hasValidParentNodeType(node) {\n        return node && (node.nodeType === Node.DOCUMENT_NODE || node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || node.nodeType === Node.ELEMENT_NODE);\n    }\n\n    /**\n     * Returns `true` if `node` can be inserted according to it's `nodeType`.\n     * @param {Node} node\n     * @returns {boolean}\n     */\n    function hasInsertableNodeType(node) {\n        return node && (isElementNode(node) || isTextNode(node) || isDocTypeNode(node) || node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || node.nodeType === Node.COMMENT_NODE || node.nodeType === Node.PROCESSING_INSTRUCTION_NODE);\n    }\n\n    /**\n     * Returns true if `node` is a DOCTYPE node\n     * @param {Node} node\n     * @returns {boolean}\n     */\n    function isDocTypeNode(node) {\n        return node && node.nodeType === Node.DOCUMENT_TYPE_NODE;\n    }\n\n    /**\n     * Returns true if the node is an element\n     * @param {Node} node\n     * @returns {boolean}\n     */\n    function isElementNode(node) {\n        return node && node.nodeType === Node.ELEMENT_NODE;\n    }\n    /**\n     * Returns true if `node` is a text node\n     * @param {Node} node\n     * @returns {boolean}\n     */\n    function isTextNode(node) {\n        return node && node.nodeType === Node.TEXT_NODE;\n    }\n\n    /**\n     * Check if en element node can be inserted before `child`, or at the end if child is falsy,\n     * according to the presence and position of a doctype node on the same level.\n     *\n     * @param {Document} doc The document node\n     * @param {Node} child the node that would become the nextSibling if the element would be inserted\n     * @returns {boolean} `true` if an element can be inserted before child\n     * @private\n     * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n     */\n    function isElementInsertionPossible(doc, child) {\n        var parentChildNodes = doc.childNodes || [];\n        if (find(parentChildNodes, isElementNode) || isDocTypeNode(child)) {\n            return false;\n        }\n        var docTypeNode = find(parentChildNodes, isDocTypeNode);\n        return !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));\n    }\n\n    /**\n     * Check if en element node can be inserted before `child`, or at the end if child is falsy,\n     * according to the presence and position of a doctype node on the same level.\n     *\n     * @param {Node} doc The document node\n     * @param {Node} child the node that would become the nextSibling if the element would be inserted\n     * @returns {boolean} `true` if an element can be inserted before child\n     * @private\n     * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n     */\n    function isElementReplacementPossible(doc, child) {\n        var parentChildNodes = doc.childNodes || [];\n        function hasElementChildThatIsNotChild(node) {\n            return isElementNode(node) && node !== child;\n        }\n        if (find(parentChildNodes, hasElementChildThatIsNotChild)) {\n            return false;\n        }\n        var docTypeNode = find(parentChildNodes, isDocTypeNode);\n        return !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));\n    }\n\n    /**\n     * @private\n     * Steps 1-5 of the checks before inserting and before replacing a child are the same.\n     *\n     * @param {Node} parent the parent node to insert `node` into\n     * @param {Node} node the node to insert\n     * @param {Node=} child the node that should become the `nextSibling` of `node`\n     * @returns {Node}\n     * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n     * @throws DOMException if `child` is provided but is not a child of `parent`.\n     * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n     * @see https://dom.spec.whatwg.org/#concept-node-replace\n     */\n    function assertPreInsertionValidity1to5(parent, node, child) {\n        // 1. If `parent` is not a Document, DocumentFragment, or Element node, then throw a \"HierarchyRequestError\" DOMException.\n        if (!hasValidParentNodeType(parent)) {\n            throw new DOMException(HIERARCHY_REQUEST_ERR, 'Unexpected parent node type ' + parent.nodeType);\n        }\n        // 2. If `node` is a host-including inclusive ancestor of `parent`, then throw a \"HierarchyRequestError\" DOMException.\n        // not implemented!\n        // 3. If `child` is non-null and its parent is not `parent`, then throw a \"NotFoundError\" DOMException.\n        if (child && child.parentNode !== parent) {\n            throw new DOMException(NOT_FOUND_ERR, 'child not in parent');\n        }\n        if (\n            // 4. If `node` is not a DocumentFragment, DocumentType, Element, or CharacterData node, then throw a \"HierarchyRequestError\" DOMException.\n            !hasInsertableNodeType(node) ||\n            // 5. If either `node` is a Text node and `parent` is a document,\n            // the sax parser currently adds top level text nodes, this will be fixed in 0.9.0\n            // || (node.nodeType === Node.TEXT_NODE && parent.nodeType === Node.DOCUMENT_NODE)\n            // or `node` is a doctype and `parent` is not a document, then throw a \"HierarchyRequestError\" DOMException.\n            isDocTypeNode(node) && parent.nodeType !== Node.DOCUMENT_NODE) {\n            throw new DOMException(HIERARCHY_REQUEST_ERR, 'Unexpected node type ' + node.nodeType + ' for parent node type ' + parent.nodeType);\n        }\n    }\n\n    /**\n     * @private\n     * Step 6 of the checks before inserting and before replacing a child are different.\n     *\n     * @param {Document} parent the parent node to insert `node` into\n     * @param {Node} node the node to insert\n     * @param {Node | undefined} child the node that should become the `nextSibling` of `node`\n     * @returns {Node}\n     * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n     * @throws DOMException if `child` is provided but is not a child of `parent`.\n     * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n     * @see https://dom.spec.whatwg.org/#concept-node-replace\n     */\n    function assertPreInsertionValidityInDocument(parent, node, child) {\n        var parentChildNodes = parent.childNodes || [];\n        var nodeChildNodes = node.childNodes || [];\n\n        // DocumentFragment\n        if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {\n            var nodeChildElements = nodeChildNodes.filter(isElementNode);\n            // If node has more than one element child or has a Text node child.\n            if (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');\n            }\n            // Otherwise, if `node` has one element child and either `parent` has an element child,\n            // `child` is a doctype, or `child` is non-null and a doctype is following `child`.\n            if (nodeChildElements.length === 1 && !isElementInsertionPossible(parent, child)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');\n            }\n        }\n        // Element\n        if (isElementNode(node)) {\n            // `parent` has an element child, `child` is a doctype,\n            // or `child` is non-null and a doctype is following `child`.\n            if (!isElementInsertionPossible(parent, child)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');\n            }\n        }\n        // DocumentType\n        if (isDocTypeNode(node)) {\n            // `parent` has a doctype child,\n            if (find(parentChildNodes, isDocTypeNode)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');\n            }\n            var parentElementChild = find(parentChildNodes, isElementNode);\n            // `child` is non-null and an element is preceding `child`,\n            if (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');\n            }\n            // or `child` is null and `parent` has an element child.\n            if (!child && parentElementChild) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can not be appended since element is present');\n            }\n        }\n    }\n\n    /**\n     * @private\n     * Step 6 of the checks before inserting and before replacing a child are different.\n     *\n     * @param {Document} parent the parent node to insert `node` into\n     * @param {Node} node the node to insert\n     * @param {Node | undefined} child the node that should become the `nextSibling` of `node`\n     * @returns {Node}\n     * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n     * @throws DOMException if `child` is provided but is not a child of `parent`.\n     * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n     * @see https://dom.spec.whatwg.org/#concept-node-replace\n     */\n    function assertPreReplacementValidityInDocument(parent, node, child) {\n        var parentChildNodes = parent.childNodes || [];\n        var nodeChildNodes = node.childNodes || [];\n\n        // DocumentFragment\n        if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {\n            var nodeChildElements = nodeChildNodes.filter(isElementNode);\n            // If `node` has more than one element child or has a Text node child.\n            if (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');\n            }\n            // Otherwise, if `node` has one element child and either `parent` has an element child that is not `child` or a doctype is following `child`.\n            if (nodeChildElements.length === 1 && !isElementReplacementPossible(parent, child)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');\n            }\n        }\n        // Element\n        if (isElementNode(node)) {\n            // `parent` has an element child that is not `child` or a doctype is following `child`.\n            if (!isElementReplacementPossible(parent, child)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');\n            }\n        }\n        // DocumentType\n        if (isDocTypeNode(node)) {\n            function hasDoctypeChildThatIsNotChild(node) {\n                return isDocTypeNode(node) && node !== child;\n            }\n\n            // `parent` has a doctype child that is not `child`,\n            if (find(parentChildNodes, hasDoctypeChildThatIsNotChild)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');\n            }\n            var parentElementChild = find(parentChildNodes, isElementNode);\n            // or an element is preceding `child`.\n            if (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');\n            }\n        }\n    }\n\n    /**\n     * @private\n     * @param {Node} parent the parent node to insert `node` into\n     * @param {Node} node the node to insert\n     * @param {Node=} child the node that should become the `nextSibling` of `node`\n     * @returns {Node}\n     * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n     * @throws DOMException if `child` is provided but is not a child of `parent`.\n     * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n     */\n    function _insertBefore(parent, node, child, _inDocumentAssertion) {\n        // To ensure pre-insertion validity of a node into a parent before a child, run these steps:\n        assertPreInsertionValidity1to5(parent, node, child);\n\n        // If parent is a document, and any of the statements below, switched on the interface node implements,\n        // are true, then throw a \"HierarchyRequestError\" DOMException.\n        if (parent.nodeType === Node.DOCUMENT_NODE) {\n            (_inDocumentAssertion || assertPreInsertionValidityInDocument)(parent, node, child);\n        }\n        var cp = node.parentNode;\n        if (cp) {\n            cp.removeChild(node); //remove and update\n        }\n\n        if (node.nodeType === DOCUMENT_FRAGMENT_NODE) {\n            var newFirst = node.firstChild;\n            if (newFirst == null) {\n                return node;\n            }\n            var newLast = node.lastChild;\n        } else {\n            newFirst = newLast = node;\n        }\n        var pre = child ? child.previousSibling : parent.lastChild;\n        newFirst.previousSibling = pre;\n        newLast.nextSibling = child;\n        if (pre) {\n            pre.nextSibling = newFirst;\n        } else {\n            parent.firstChild = newFirst;\n        }\n        if (child == null) {\n            parent.lastChild = newLast;\n        } else {\n            child.previousSibling = newLast;\n        }\n        do {\n            newFirst.parentNode = parent;\n        } while (newFirst !== newLast && (newFirst = newFirst.nextSibling));\n        _onUpdateChild(parent.ownerDocument || parent, parent);\n        //console.log(parent.lastChild.nextSibling == null)\n        if (node.nodeType == DOCUMENT_FRAGMENT_NODE) {\n            node.firstChild = node.lastChild = null;\n        }\n        return node;\n    }\n\n    /**\n     * Appends `newChild` to `parentNode`.\n     * If `newChild` is already connected to a `parentNode` it is first removed from it.\n     *\n     * @see https://github.com/xmldom/xmldom/issues/135\n     * @see https://github.com/xmldom/xmldom/issues/145\n     * @param {Node} parentNode\n     * @param {Node} newChild\n     * @returns {Node}\n     * @private\n     */\n    function _appendSingleChild(parentNode, newChild) {\n        if (newChild.parentNode) {\n            newChild.parentNode.removeChild(newChild);\n        }\n        newChild.parentNode = parentNode;\n        newChild.previousSibling = parentNode.lastChild;\n        newChild.nextSibling = null;\n        if (newChild.previousSibling) {\n            newChild.previousSibling.nextSibling = newChild;\n        } else {\n            parentNode.firstChild = newChild;\n        }\n        parentNode.lastChild = newChild;\n        _onUpdateChild(parentNode.ownerDocument, parentNode, newChild);\n        return newChild;\n    }\n    Document.prototype = {\n        //implementation : null,\n        nodeName: '#document',\n        nodeType: DOCUMENT_NODE,\n        /**\n         * The DocumentType node of the document.\n         *\n         * @readonly\n         * @type DocumentType\n         */\n        doctype: null,\n        documentElement: null,\n        _inc: 1,\n        insertBefore: function (newChild, refChild) {\n            //raises\n            if (newChild.nodeType == DOCUMENT_FRAGMENT_NODE) {\n                var child = newChild.firstChild;\n                while (child) {\n                    var next = child.nextSibling;\n                    this.insertBefore(child, refChild);\n                    child = next;\n                }\n                return newChild;\n            }\n            _insertBefore(this, newChild, refChild);\n            newChild.ownerDocument = this;\n            if (this.documentElement === null && newChild.nodeType === ELEMENT_NODE) {\n                this.documentElement = newChild;\n            }\n            return newChild;\n        },\n        removeChild: function (oldChild) {\n            if (this.documentElement == oldChild) {\n                this.documentElement = null;\n            }\n            return _removeChild(this, oldChild);\n        },\n        replaceChild: function (newChild, oldChild) {\n            //raises\n            _insertBefore(this, newChild, oldChild, assertPreReplacementValidityInDocument);\n            newChild.ownerDocument = this;\n            if (oldChild) {\n                this.removeChild(oldChild);\n            }\n            if (isElementNode(newChild)) {\n                this.documentElement = newChild;\n            }\n        },\n        // Introduced in DOM Level 2:\n        importNode: function (importedNode, deep) {\n            return importNode(this, importedNode, deep);\n        },\n        // Introduced in DOM Level 2:\n        getElementById: function (id) {\n            var rtv = null;\n            _visitNode(this.documentElement, function (node) {\n                if (node.nodeType == ELEMENT_NODE) {\n                    if (node.getAttribute('id') == id) {\n                        rtv = node;\n                        return true;\n                    }\n                }\n            });\n            return rtv;\n        },\n        /**\n         * The `getElementsByClassName` method of `Document` interface returns an array-like object\n         * of all child elements which have **all** of the given class name(s).\n         *\n         * Returns an empty list if `classeNames` is an empty string or only contains HTML white space characters.\n         *\n         *\n         * Warning: This is a live LiveNodeList.\n         * Changes in the DOM will reflect in the array as the changes occur.\n         * If an element selected by this array no longer qualifies for the selector,\n         * it will automatically be removed. Be aware of this for iteration purposes.\n         *\n         * @param {string} classNames is a string representing the class name(s) to match; multiple class names are separated by (ASCII-)whitespace\n         *\n         * @see https://developer.mozilla.org/en-US/docs/Web/API/Document/getElementsByClassName\n         * @see https://dom.spec.whatwg.org/#concept-getelementsbyclassname\n         */\n        getElementsByClassName: function (classNames) {\n            var classNamesSet = toOrderedSet(classNames);\n            return new LiveNodeList(this, function (base) {\n                var ls = [];\n                if (classNamesSet.length > 0) {\n                    _visitNode(base.documentElement, function (node) {\n                        if (node !== base && node.nodeType === ELEMENT_NODE) {\n                            var nodeClassNames = node.getAttribute('class');\n                            // can be null if the attribute does not exist\n                            if (nodeClassNames) {\n                                // before splitting and iterating just compare them for the most common case\n                                var matches = classNames === nodeClassNames;\n                                if (!matches) {\n                                    var nodeClassNamesSet = toOrderedSet(nodeClassNames);\n                                    matches = classNamesSet.every(arrayIncludes(nodeClassNamesSet));\n                                }\n                                if (matches) {\n                                    ls.push(node);\n                                }\n                            }\n                        }\n                    });\n                }\n                return ls;\n            });\n        },\n        //document factory method:\n        createElement: function (tagName) {\n            var node = new Element();\n            node.ownerDocument = this;\n            node.nodeName = tagName;\n            node.tagName = tagName;\n            node.localName = tagName;\n            node.childNodes = new NodeList();\n            var attrs = node.attributes = new NamedNodeMap();\n            attrs._ownerElement = node;\n            return node;\n        },\n        createDocumentFragment: function () {\n            var node = new DocumentFragment();\n            node.ownerDocument = this;\n            node.childNodes = new NodeList();\n            return node;\n        },\n        createTextNode: function (data) {\n            var node = new Text();\n            node.ownerDocument = this;\n            node.appendData(data);\n            return node;\n        },\n        createComment: function (data) {\n            var node = new Comment();\n            node.ownerDocument = this;\n            node.appendData(data);\n            return node;\n        },\n        createCDATASection: function (data) {\n            var node = new CDATASection();\n            node.ownerDocument = this;\n            node.appendData(data);\n            return node;\n        },\n        createProcessingInstruction: function (target, data) {\n            var node = new ProcessingInstruction();\n            node.ownerDocument = this;\n            node.tagName = node.target = target;\n            node.nodeValue = node.data = data;\n            return node;\n        },\n        createAttribute: function (name) {\n            var node = new Attr();\n            node.ownerDocument = this;\n            node.name = name;\n            node.nodeName = name;\n            node.localName = name;\n            node.specified = true;\n            return node;\n        },\n        createEntityReference: function (name) {\n            var node = new EntityReference();\n            node.ownerDocument = this;\n            node.nodeName = name;\n            return node;\n        },\n        // Introduced in DOM Level 2:\n        createElementNS: function (namespaceURI, qualifiedName) {\n            var node = new Element();\n            var pl = qualifiedName.split(':');\n            var attrs = node.attributes = new NamedNodeMap();\n            node.childNodes = new NodeList();\n            node.ownerDocument = this;\n            node.nodeName = qualifiedName;\n            node.tagName = qualifiedName;\n            node.namespaceURI = namespaceURI;\n            if (pl.length == 2) {\n                node.prefix = pl[0];\n                node.localName = pl[1];\n            } else {\n                //el.prefix = null;\n                node.localName = qualifiedName;\n            }\n            attrs._ownerElement = node;\n            return node;\n        },\n        // Introduced in DOM Level 2:\n        createAttributeNS: function (namespaceURI, qualifiedName) {\n            var node = new Attr();\n            var pl = qualifiedName.split(':');\n            node.ownerDocument = this;\n            node.nodeName = qualifiedName;\n            node.name = qualifiedName;\n            node.namespaceURI = namespaceURI;\n            node.specified = true;\n            if (pl.length == 2) {\n                node.prefix = pl[0];\n                node.localName = pl[1];\n            } else {\n                //el.prefix = null;\n                node.localName = qualifiedName;\n            }\n            return node;\n        }\n    };\n    _extends(Document, Node);\n    function Element() {\n        this._nsMap = {};\n    }\n    Element.prototype = {\n        nodeType: ELEMENT_NODE,\n        hasAttribute: function (name) {\n            return this.getAttributeNode(name) != null;\n        },\n        getAttribute: function (name) {\n            var attr = this.getAttributeNode(name);\n            return attr && attr.value || '';\n        },\n        getAttributeNode: function (name) {\n            return this.attributes.getNamedItem(name);\n        },\n        setAttribute: function (name, value) {\n            var attr = this.ownerDocument.createAttribute(name);\n            attr.value = attr.nodeValue = \"\" + value;\n            this.setAttributeNode(attr);\n        },\n        removeAttribute: function (name) {\n            var attr = this.getAttributeNode(name);\n            attr && this.removeAttributeNode(attr);\n        },\n        //four real opeartion method\n        appendChild: function (newChild) {\n            if (newChild.nodeType === DOCUMENT_FRAGMENT_NODE) {\n                return this.insertBefore(newChild, null);\n            } else {\n                return _appendSingleChild(this, newChild);\n            }\n        },\n        setAttributeNode: function (newAttr) {\n            return this.attributes.setNamedItem(newAttr);\n        },\n        setAttributeNodeNS: function (newAttr) {\n            return this.attributes.setNamedItemNS(newAttr);\n        },\n        removeAttributeNode: function (oldAttr) {\n            //console.log(this == oldAttr.ownerElement)\n            return this.attributes.removeNamedItem(oldAttr.nodeName);\n        },\n        //get real attribute name,and remove it by removeAttributeNode\n        removeAttributeNS: function (namespaceURI, localName) {\n            var old = this.getAttributeNodeNS(namespaceURI, localName);\n            old && this.removeAttributeNode(old);\n        },\n        hasAttributeNS: function (namespaceURI, localName) {\n            return this.getAttributeNodeNS(namespaceURI, localName) != null;\n        },\n        getAttributeNS: function (namespaceURI, localName) {\n            var attr = this.getAttributeNodeNS(namespaceURI, localName);\n            return attr && attr.value || '';\n        },\n        setAttributeNS: function (namespaceURI, qualifiedName, value) {\n            var attr = this.ownerDocument.createAttributeNS(namespaceURI, qualifiedName);\n            attr.value = attr.nodeValue = \"\" + value;\n            this.setAttributeNode(attr);\n        },\n        getAttributeNodeNS: function (namespaceURI, localName) {\n            return this.attributes.getNamedItemNS(namespaceURI, localName);\n        },\n        getElementsByTagName: function (tagName) {\n            return new LiveNodeList(this, function (base) {\n                var ls = [];\n                _visitNode(base, function (node) {\n                    if (node !== base && node.nodeType == ELEMENT_NODE && (tagName === '*' || node.tagName == tagName)) {\n                        ls.push(node);\n                    }\n                });\n                return ls;\n            });\n        },\n        getElementsByTagNameNS: function (namespaceURI, localName) {\n            return new LiveNodeList(this, function (base) {\n                var ls = [];\n                _visitNode(base, function (node) {\n                    if (node !== base && node.nodeType === ELEMENT_NODE && (namespaceURI === '*' || node.namespaceURI === namespaceURI) && (localName === '*' || node.localName == localName)) {\n                        ls.push(node);\n                    }\n                });\n                return ls;\n            });\n        }\n    };\n    Document.prototype.getElementsByTagName = Element.prototype.getElementsByTagName;\n    Document.prototype.getElementsByTagNameNS = Element.prototype.getElementsByTagNameNS;\n    _extends(Element, Node);\n    function Attr() {}\n    Attr.prototype.nodeType = ATTRIBUTE_NODE;\n    _extends(Attr, Node);\n    function CharacterData() {}\n    CharacterData.prototype = {\n        data: '',\n        substringData: function (offset, count) {\n            return this.data.substring(offset, offset + count);\n        },\n        appendData: function (text) {\n            text = this.data + text;\n            this.nodeValue = this.data = text;\n            this.length = text.length;\n        },\n        insertData: function (offset, text) {\n            this.replaceData(offset, 0, text);\n        },\n        appendChild: function (newChild) {\n            throw new Error(ExceptionMessage[HIERARCHY_REQUEST_ERR]);\n        },\n        deleteData: function (offset, count) {\n            this.replaceData(offset, count, \"\");\n        },\n        replaceData: function (offset, count, text) {\n            var start = this.data.substring(0, offset);\n            var end = this.data.substring(offset + count);\n            text = start + text + end;\n            this.nodeValue = this.data = text;\n            this.length = text.length;\n        }\n    };\n    _extends(CharacterData, Node);\n    function Text() {}\n    Text.prototype = {\n        nodeName: \"#text\",\n        nodeType: TEXT_NODE,\n        splitText: function (offset) {\n            var text = this.data;\n            var newText = text.substring(offset);\n            text = text.substring(0, offset);\n            this.data = this.nodeValue = text;\n            this.length = text.length;\n            var newNode = this.ownerDocument.createTextNode(newText);\n            if (this.parentNode) {\n                this.parentNode.insertBefore(newNode, this.nextSibling);\n            }\n            return newNode;\n        }\n    };\n    _extends(Text, CharacterData);\n    function Comment() {}\n    Comment.prototype = {\n        nodeName: \"#comment\",\n        nodeType: COMMENT_NODE\n    };\n    _extends(Comment, CharacterData);\n    function CDATASection() {}\n    CDATASection.prototype = {\n        nodeName: \"#cdata-section\",\n        nodeType: CDATA_SECTION_NODE\n    };\n    _extends(CDATASection, CharacterData);\n    function DocumentType() {}\n    DocumentType.prototype.nodeType = DOCUMENT_TYPE_NODE;\n    _extends(DocumentType, Node);\n    function Notation() {}\n    Notation.prototype.nodeType = NOTATION_NODE;\n    _extends(Notation, Node);\n    function Entity() {}\n    Entity.prototype.nodeType = ENTITY_NODE;\n    _extends(Entity, Node);\n    function EntityReference() {}\n    EntityReference.prototype.nodeType = ENTITY_REFERENCE_NODE;\n    _extends(EntityReference, Node);\n    function DocumentFragment() {}\n    DocumentFragment.prototype.nodeName = \"#document-fragment\";\n    DocumentFragment.prototype.nodeType = DOCUMENT_FRAGMENT_NODE;\n    _extends(DocumentFragment, Node);\n    function ProcessingInstruction() {}\n    ProcessingInstruction.prototype.nodeType = PROCESSING_INSTRUCTION_NODE;\n    _extends(ProcessingInstruction, Node);\n    function XMLSerializer() {}\n    XMLSerializer.prototype.serializeToString = function (node, isHtml, nodeFilter) {\n        return nodeSerializeToString.call(node, isHtml, nodeFilter);\n    };\n    Node.prototype.toString = nodeSerializeToString;\n    function nodeSerializeToString(isHtml, nodeFilter) {\n        var buf = [];\n        var refNode = this.nodeType == 9 && this.documentElement || this;\n        var prefix = refNode.prefix;\n        var uri = refNode.namespaceURI;\n        if (uri && prefix == null) {\n            //console.log(prefix)\n            var prefix = refNode.lookupPrefix(uri);\n            if (prefix == null) {\n                //isHTML = true;\n                var visibleNamespaces = [{\n                    namespace: uri,\n                    prefix: null\n                }\n                    //{namespace:uri,prefix:''}\n                ];\n            }\n        }\n\n        serializeToString(this, buf, isHtml, nodeFilter, visibleNamespaces);\n        //console.log('###',this.nodeType,uri,prefix,buf.join(''))\n        return buf.join('');\n    }\n    function needNamespaceDefine(node, isHTML, visibleNamespaces) {\n        var prefix = node.prefix || '';\n        var uri = node.namespaceURI;\n        // According to [Namespaces in XML 1.0](https://www.w3.org/TR/REC-xml-names/#ns-using) ,\n        // and more specifically https://www.w3.org/TR/REC-xml-names/#nsc-NoPrefixUndecl :\n        // > In a namespace declaration for a prefix [...], the attribute value MUST NOT be empty.\n        // in a similar manner [Namespaces in XML 1.1](https://www.w3.org/TR/xml-names11/#ns-using)\n        // and more specifically https://www.w3.org/TR/xml-names11/#nsc-NSDeclared :\n        // > [...] Furthermore, the attribute value [...] must not be an empty string.\n        // so serializing empty namespace value like xmlns:ds=\"\" would produce an invalid XML document.\n        if (!uri) {\n            return false;\n        }\n        if (prefix === \"xml\" && uri === NAMESPACE$2.XML || uri === NAMESPACE$2.XMLNS) {\n            return false;\n        }\n        var i = visibleNamespaces.length;\n        while (i--) {\n            var ns = visibleNamespaces[i];\n            // get namespace prefix\n            if (ns.prefix === prefix) {\n                return ns.namespace !== uri;\n            }\n        }\n        return true;\n    }\n    /**\n     * Well-formed constraint: No < in Attribute Values\n     * > The replacement text of any entity referred to directly or indirectly\n     * > in an attribute value must not contain a <.\n     * @see https://www.w3.org/TR/xml11/#CleanAttrVals\n     * @see https://www.w3.org/TR/xml11/#NT-AttValue\n     *\n     * Literal whitespace other than space that appear in attribute values\n     * are serialized as their entity references, so they will be preserved.\n     * (In contrast to whitespace literals in the input which are normalized to spaces)\n     * @see https://www.w3.org/TR/xml11/#AVNormalize\n     * @see https://w3c.github.io/DOM-Parsing/#serializing-an-element-s-attributes\n     */\n    function addSerializedAttribute(buf, qualifiedName, value) {\n        buf.push(' ', qualifiedName, '=\"', value.replace(/[<>&\"\\t\\n\\r]/g, _xmlEncoder), '\"');\n    }\n    function serializeToString(node, buf, isHTML, nodeFilter, visibleNamespaces) {\n        if (!visibleNamespaces) {\n            visibleNamespaces = [];\n        }\n        if (nodeFilter) {\n            node = nodeFilter(node);\n            if (node) {\n                if (typeof node == 'string') {\n                    buf.push(node);\n                    return;\n                }\n            } else {\n                return;\n            }\n            //buf.sort.apply(attrs, attributeSorter);\n        }\n\n        switch (node.nodeType) {\n            case ELEMENT_NODE:\n                var attrs = node.attributes;\n                var len = attrs.length;\n                var child = node.firstChild;\n                var nodeName = node.tagName;\n                isHTML = NAMESPACE$2.isHTML(node.namespaceURI) || isHTML;\n                var prefixedNodeName = nodeName;\n                if (!isHTML && !node.prefix && node.namespaceURI) {\n                    var defaultNS;\n                    // lookup current default ns from `xmlns` attribute\n                    for (var ai = 0; ai < attrs.length; ai++) {\n                        if (attrs.item(ai).name === 'xmlns') {\n                            defaultNS = attrs.item(ai).value;\n                            break;\n                        }\n                    }\n                    if (!defaultNS) {\n                        // lookup current default ns in visibleNamespaces\n                        for (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {\n                            var namespace = visibleNamespaces[nsi];\n                            if (namespace.prefix === '' && namespace.namespace === node.namespaceURI) {\n                                defaultNS = namespace.namespace;\n                                break;\n                            }\n                        }\n                    }\n                    if (defaultNS !== node.namespaceURI) {\n                        for (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {\n                            var namespace = visibleNamespaces[nsi];\n                            if (namespace.namespace === node.namespaceURI) {\n                                if (namespace.prefix) {\n                                    prefixedNodeName = namespace.prefix + ':' + nodeName;\n                                }\n                                break;\n                            }\n                        }\n                    }\n                }\n                buf.push('<', prefixedNodeName);\n                for (var i = 0; i < len; i++) {\n                    // add namespaces for attributes\n                    var attr = attrs.item(i);\n                    if (attr.prefix == 'xmlns') {\n                        visibleNamespaces.push({\n                            prefix: attr.localName,\n                            namespace: attr.value\n                        });\n                    } else if (attr.nodeName == 'xmlns') {\n                        visibleNamespaces.push({\n                            prefix: '',\n                            namespace: attr.value\n                        });\n                    }\n                }\n                for (var i = 0; i < len; i++) {\n                    var attr = attrs.item(i);\n                    if (needNamespaceDefine(attr, isHTML, visibleNamespaces)) {\n                        var prefix = attr.prefix || '';\n                        var uri = attr.namespaceURI;\n                        addSerializedAttribute(buf, prefix ? 'xmlns:' + prefix : \"xmlns\", uri);\n                        visibleNamespaces.push({\n                            prefix: prefix,\n                            namespace: uri\n                        });\n                    }\n                    serializeToString(attr, buf, isHTML, nodeFilter, visibleNamespaces);\n                }\n\n                // add namespace for current node\n                if (nodeName === prefixedNodeName && needNamespaceDefine(node, isHTML, visibleNamespaces)) {\n                    var prefix = node.prefix || '';\n                    var uri = node.namespaceURI;\n                    addSerializedAttribute(buf, prefix ? 'xmlns:' + prefix : \"xmlns\", uri);\n                    visibleNamespaces.push({\n                        prefix: prefix,\n                        namespace: uri\n                    });\n                }\n                if (child || isHTML && !/^(?:meta|link|img|br|hr|input)$/i.test(nodeName)) {\n                    buf.push('>');\n                    //if is cdata child node\n                    if (isHTML && /^script$/i.test(nodeName)) {\n                        while (child) {\n                            if (child.data) {\n                                buf.push(child.data);\n                            } else {\n                                serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());\n                            }\n                            child = child.nextSibling;\n                        }\n                    } else {\n                        while (child) {\n                            serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());\n                            child = child.nextSibling;\n                        }\n                    }\n                    buf.push('</', prefixedNodeName, '>');\n                } else {\n                    buf.push('/>');\n                }\n                // remove added visible namespaces\n                //visibleNamespaces.length = startVisibleNamespaces;\n                return;\n            case DOCUMENT_NODE:\n            case DOCUMENT_FRAGMENT_NODE:\n                var child = node.firstChild;\n                while (child) {\n                    serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());\n                    child = child.nextSibling;\n                }\n                return;\n            case ATTRIBUTE_NODE:\n                return addSerializedAttribute(buf, node.name, node.value);\n            case TEXT_NODE:\n                /**\n                 * The ampersand character (&) and the left angle bracket (<) must not appear in their literal form,\n                 * except when used as markup delimiters, or within a comment, a processing instruction, or a CDATA section.\n                 * If they are needed elsewhere, they must be escaped using either numeric character references or the strings\n                 * `&amp;` and `&lt;` respectively.\n                 * The right angle bracket (>) may be represented using the string \" &gt; \", and must, for compatibility,\n                 * be escaped using either `&gt;` or a character reference when it appears in the string `]]>` in content,\n                 * when that string is not marking the end of a CDATA section.\n                 *\n                 * In the content of elements, character data is any string of characters\n                 * which does not contain the start-delimiter of any markup\n                 * and does not include the CDATA-section-close delimiter, `]]>`.\n                 *\n                 * @see https://www.w3.org/TR/xml/#NT-CharData\n                 * @see https://w3c.github.io/DOM-Parsing/#xml-serializing-a-text-node\n                 */\n                return buf.push(node.data.replace(/[<&>]/g, _xmlEncoder));\n            case CDATA_SECTION_NODE:\n                return buf.push('<![CDATA[', node.data, ']]>');\n            case COMMENT_NODE:\n                return buf.push(\"<!--\", node.data, \"-->\");\n            case DOCUMENT_TYPE_NODE:\n                var pubid = node.publicId;\n                var sysid = node.systemId;\n                buf.push('<!DOCTYPE ', node.name);\n                if (pubid) {\n                    buf.push(' PUBLIC ', pubid);\n                    if (sysid && sysid != '.') {\n                        buf.push(' ', sysid);\n                    }\n                    buf.push('>');\n                } else if (sysid && sysid != '.') {\n                    buf.push(' SYSTEM ', sysid, '>');\n                } else {\n                    var sub = node.internalSubset;\n                    if (sub) {\n                        buf.push(\" [\", sub, \"]\");\n                    }\n                    buf.push(\">\");\n                }\n                return;\n            case PROCESSING_INSTRUCTION_NODE:\n                return buf.push(\"<?\", node.target, \" \", node.data, \"?>\");\n            case ENTITY_REFERENCE_NODE:\n                return buf.push('&', node.nodeName, ';');\n            //case ENTITY_NODE:\n            //case NOTATION_NODE:\n            default:\n                buf.push('??', node.nodeName);\n        }\n    }\n    function importNode(doc, node, deep) {\n        var node2;\n        switch (node.nodeType) {\n            case ELEMENT_NODE:\n                node2 = node.cloneNode(false);\n                node2.ownerDocument = doc;\n            //var attrs = node2.attributes;\n            //var len = attrs.length;\n            //for(var i=0;i<len;i++){\n            //node2.setAttributeNodeNS(importNode(doc,attrs.item(i),deep));\n            //}\n            case DOCUMENT_FRAGMENT_NODE:\n                break;\n            case ATTRIBUTE_NODE:\n                deep = true;\n                break;\n            //case ENTITY_REFERENCE_NODE:\n            //case PROCESSING_INSTRUCTION_NODE:\n            ////case TEXT_NODE:\n            //case CDATA_SECTION_NODE:\n            //case COMMENT_NODE:\n            //\tdeep = false;\n            //\tbreak;\n            //case DOCUMENT_NODE:\n            //case DOCUMENT_TYPE_NODE:\n            //cannot be imported.\n            //case ENTITY_NODE:\n            //case NOTATION_NODE：\n            //can not hit in level3\n            //default:throw e;\n        }\n\n        if (!node2) {\n            node2 = node.cloneNode(false); //false\n        }\n\n        node2.ownerDocument = doc;\n        node2.parentNode = null;\n        if (deep) {\n            var child = node.firstChild;\n            while (child) {\n                node2.appendChild(importNode(doc, child, deep));\n                child = child.nextSibling;\n            }\n        }\n        return node2;\n    }\n    //\n    //var _relationMap = {firstChild:1,lastChild:1,previousSibling:1,nextSibling:1,\n    //\t\t\t\t\tattributes:1,childNodes:1,parentNode:1,documentElement:1,doctype,};\n    function cloneNode(doc, node, deep) {\n        var node2 = new node.constructor();\n        for (var n in node) {\n            if (Object.prototype.hasOwnProperty.call(node, n)) {\n                var v = node[n];\n                if (typeof v != \"object\") {\n                    if (v != node2[n]) {\n                        node2[n] = v;\n                    }\n                }\n            }\n        }\n        if (node.childNodes) {\n            node2.childNodes = new NodeList();\n        }\n        node2.ownerDocument = doc;\n        switch (node2.nodeType) {\n            case ELEMENT_NODE:\n                var attrs = node.attributes;\n                var attrs2 = node2.attributes = new NamedNodeMap();\n                var len = attrs.length;\n                attrs2._ownerElement = node2;\n                for (var i = 0; i < len; i++) {\n                    node2.setAttributeNode(cloneNode(doc, attrs.item(i), true));\n                }\n                break;\n            case ATTRIBUTE_NODE:\n                deep = true;\n        }\n        if (deep) {\n            var child = node.firstChild;\n            while (child) {\n                node2.appendChild(cloneNode(doc, child, deep));\n                child = child.nextSibling;\n            }\n        }\n        return node2;\n    }\n    function __set__(object, key, value) {\n        object[key] = value;\n    }\n    //do dynamic\n    try {\n        if (Object.defineProperty) {\n            Object.defineProperty(LiveNodeList.prototype, 'length', {\n                get: function () {\n                    _updateLiveList(this);\n                    return this.$$length;\n                }\n            });\n            Object.defineProperty(Node.prototype, 'textContent', {\n                get: function () {\n                    return getTextContent(this);\n                },\n                set: function (data) {\n                    switch (this.nodeType) {\n                        case ELEMENT_NODE:\n                        case DOCUMENT_FRAGMENT_NODE:\n                            while (this.firstChild) {\n                                this.removeChild(this.firstChild);\n                            }\n                            if (data || String(data)) {\n                                this.appendChild(this.ownerDocument.createTextNode(data));\n                            }\n                            break;\n                        default:\n                            this.data = data;\n                            this.value = data;\n                            this.nodeValue = data;\n                    }\n                }\n            });\n            function getTextContent(node) {\n                switch (node.nodeType) {\n                    case ELEMENT_NODE:\n                    case DOCUMENT_FRAGMENT_NODE:\n                        var buf = [];\n                        node = node.firstChild;\n                        while (node) {\n                            if (node.nodeType !== 7 && node.nodeType !== 8) {\n                                buf.push(getTextContent(node));\n                            }\n                            node = node.nextSibling;\n                        }\n                        return buf.join('');\n                    default:\n                        return node.nodeValue;\n                }\n            }\n            __set__ = function (object, key, value) {\n                //console.log(value)\n                object['$$' + key] = value;\n            };\n        }\n    } catch (e) {//ie8\n    }\n\n    //if(typeof require == 'function'){\n    var DocumentType_1 = DocumentType;\n    var DOMException_1 = DOMException;\n    var DOMImplementation_1 = DOMImplementation$1;\n    var Element_1 = Element;\n    var Node_1 = Node;\n    var NodeList_1 = NodeList;\n    var XMLSerializer_1 = XMLSerializer;\n    //}\n\n    var dom = {\n        DocumentType: DocumentType_1,\n        DOMException: DOMException_1,\n        DOMImplementation: DOMImplementation_1,\n        Element: Element_1,\n        Node: Node_1,\n        NodeList: NodeList_1,\n        XMLSerializer: XMLSerializer_1\n    };\n\n    var entities = createCommonjsModule(function (module, exports) {\n        var freeze = conventions.freeze;\n\n        /**\n         * The entities that are predefined in every XML document.\n         *\n         * @see https://www.w3.org/TR/2006/REC-xml11-20060816/#sec-predefined-ent W3C XML 1.1\n         * @see https://www.w3.org/TR/2008/REC-xml-20081126/#sec-predefined-ent W3C XML 1.0\n         * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Predefined_entities_in_XML Wikipedia\n         */\n        exports.XML_ENTITIES = freeze({\n            amp: '&',\n            apos: \"'\",\n            gt: '>',\n            lt: '<',\n            quot: '\"'\n        });\n\n        /**\n         * A map of currently 241 entities that are detected in an HTML document.\n         * They contain all entries from `XML_ENTITIES`.\n         *\n         * @see XML_ENTITIES\n         * @see DOMParser.parseFromString\n         * @see DOMImplementation.prototype.createHTMLDocument\n         * @see https://html.spec.whatwg.org/#named-character-references WHATWG HTML(5) Spec\n         * @see https://www.w3.org/TR/xml-entity-names/ W3C XML Entity Names\n         * @see https://www.w3.org/TR/html4/sgml/entities.html W3C HTML4/SGML\n         * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Character_entity_references_in_HTML Wikipedia (HTML)\n         * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Entities_representing_special_characters_in_XHTML Wikpedia (XHTML)\n         */\n        exports.HTML_ENTITIES = freeze({\n            lt: '<',\n            gt: '>',\n            amp: '&',\n            quot: '\"',\n            apos: \"'\",\n            Agrave: \"À\",\n            Aacute: \"Á\",\n            Acirc: \"Â\",\n            Atilde: \"Ã\",\n            Auml: \"Ä\",\n            Aring: \"Å\",\n            AElig: \"Æ\",\n            Ccedil: \"Ç\",\n            Egrave: \"È\",\n            Eacute: \"É\",\n            Ecirc: \"Ê\",\n            Euml: \"Ë\",\n            Igrave: \"Ì\",\n            Iacute: \"Í\",\n            Icirc: \"Î\",\n            Iuml: \"Ï\",\n            ETH: \"Ð\",\n            Ntilde: \"Ñ\",\n            Ograve: \"Ò\",\n            Oacute: \"Ó\",\n            Ocirc: \"Ô\",\n            Otilde: \"Õ\",\n            Ouml: \"Ö\",\n            Oslash: \"Ø\",\n            Ugrave: \"Ù\",\n            Uacute: \"Ú\",\n            Ucirc: \"Û\",\n            Uuml: \"Ü\",\n            Yacute: \"Ý\",\n            THORN: \"Þ\",\n            szlig: \"ß\",\n            agrave: \"à\",\n            aacute: \"á\",\n            acirc: \"â\",\n            atilde: \"ã\",\n            auml: \"ä\",\n            aring: \"å\",\n            aelig: \"æ\",\n            ccedil: \"ç\",\n            egrave: \"è\",\n            eacute: \"é\",\n            ecirc: \"ê\",\n            euml: \"ë\",\n            igrave: \"ì\",\n            iacute: \"í\",\n            icirc: \"î\",\n            iuml: \"ï\",\n            eth: \"ð\",\n            ntilde: \"ñ\",\n            ograve: \"ò\",\n            oacute: \"ó\",\n            ocirc: \"ô\",\n            otilde: \"õ\",\n            ouml: \"ö\",\n            oslash: \"ø\",\n            ugrave: \"ù\",\n            uacute: \"ú\",\n            ucirc: \"û\",\n            uuml: \"ü\",\n            yacute: \"ý\",\n            thorn: \"þ\",\n            yuml: \"ÿ\",\n            nbsp: \"\\u00a0\",\n            iexcl: \"¡\",\n            cent: \"¢\",\n            pound: \"£\",\n            curren: \"¤\",\n            yen: \"¥\",\n            brvbar: \"¦\",\n            sect: \"§\",\n            uml: \"¨\",\n            copy: \"©\",\n            ordf: \"ª\",\n            laquo: \"«\",\n            not: \"¬\",\n            shy: \"­­\",\n            reg: \"®\",\n            macr: \"¯\",\n            deg: \"°\",\n            plusmn: \"±\",\n            sup2: \"²\",\n            sup3: \"³\",\n            acute: \"´\",\n            micro: \"µ\",\n            para: \"¶\",\n            middot: \"·\",\n            cedil: \"¸\",\n            sup1: \"¹\",\n            ordm: \"º\",\n            raquo: \"»\",\n            frac14: \"¼\",\n            frac12: \"½\",\n            frac34: \"¾\",\n            iquest: \"¿\",\n            times: \"×\",\n            divide: \"÷\",\n            forall: \"∀\",\n            part: \"∂\",\n            exist: \"∃\",\n            empty: \"∅\",\n            nabla: \"∇\",\n            isin: \"∈\",\n            notin: \"∉\",\n            ni: \"∋\",\n            prod: \"∏\",\n            sum: \"∑\",\n            minus: \"−\",\n            lowast: \"∗\",\n            radic: \"√\",\n            prop: \"∝\",\n            infin: \"∞\",\n            ang: \"∠\",\n            and: \"∧\",\n            or: \"∨\",\n            cap: \"∩\",\n            cup: \"∪\",\n            'int': \"∫\",\n            there4: \"∴\",\n            sim: \"∼\",\n            cong: \"≅\",\n            asymp: \"≈\",\n            ne: \"≠\",\n            equiv: \"≡\",\n            le: \"≤\",\n            ge: \"≥\",\n            sub: \"⊂\",\n            sup: \"⊃\",\n            nsub: \"⊄\",\n            sube: \"⊆\",\n            supe: \"⊇\",\n            oplus: \"⊕\",\n            otimes: \"⊗\",\n            perp: \"⊥\",\n            sdot: \"⋅\",\n            Alpha: \"Α\",\n            Beta: \"Β\",\n            Gamma: \"Γ\",\n            Delta: \"Δ\",\n            Epsilon: \"Ε\",\n            Zeta: \"Ζ\",\n            Eta: \"Η\",\n            Theta: \"Θ\",\n            Iota: \"Ι\",\n            Kappa: \"Κ\",\n            Lambda: \"Λ\",\n            Mu: \"Μ\",\n            Nu: \"Ν\",\n            Xi: \"Ξ\",\n            Omicron: \"Ο\",\n            Pi: \"Π\",\n            Rho: \"Ρ\",\n            Sigma: \"Σ\",\n            Tau: \"Τ\",\n            Upsilon: \"Υ\",\n            Phi: \"Φ\",\n            Chi: \"Χ\",\n            Psi: \"Ψ\",\n            Omega: \"Ω\",\n            alpha: \"α\",\n            beta: \"β\",\n            gamma: \"γ\",\n            delta: \"δ\",\n            epsilon: \"ε\",\n            zeta: \"ζ\",\n            eta: \"η\",\n            theta: \"θ\",\n            iota: \"ι\",\n            kappa: \"κ\",\n            lambda: \"λ\",\n            mu: \"μ\",\n            nu: \"ν\",\n            xi: \"ξ\",\n            omicron: \"ο\",\n            pi: \"π\",\n            rho: \"ρ\",\n            sigmaf: \"ς\",\n            sigma: \"σ\",\n            tau: \"τ\",\n            upsilon: \"υ\",\n            phi: \"φ\",\n            chi: \"χ\",\n            psi: \"ψ\",\n            omega: \"ω\",\n            thetasym: \"ϑ\",\n            upsih: \"ϒ\",\n            piv: \"ϖ\",\n            OElig: \"Œ\",\n            oelig: \"œ\",\n            Scaron: \"Š\",\n            scaron: \"š\",\n            Yuml: \"Ÿ\",\n            fnof: \"ƒ\",\n            circ: \"ˆ\",\n            tilde: \"˜\",\n            ensp: \" \",\n            emsp: \" \",\n            thinsp: \" \",\n            zwnj: \"‌\",\n            zwj: \"‍\",\n            lrm: \"‎\",\n            rlm: \"‏\",\n            ndash: \"–\",\n            mdash: \"—\",\n            lsquo: \"‘\",\n            rsquo: \"’\",\n            sbquo: \"‚\",\n            ldquo: \"“\",\n            rdquo: \"”\",\n            bdquo: \"„\",\n            dagger: \"†\",\n            Dagger: \"‡\",\n            bull: \"•\",\n            hellip: \"…\",\n            permil: \"‰\",\n            prime: \"′\",\n            Prime: \"″\",\n            lsaquo: \"‹\",\n            rsaquo: \"›\",\n            oline: \"‾\",\n            euro: \"€\",\n            trade: \"™\",\n            larr: \"←\",\n            uarr: \"↑\",\n            rarr: \"→\",\n            darr: \"↓\",\n            harr: \"↔\",\n            crarr: \"↵\",\n            lceil: \"⌈\",\n            rceil: \"⌉\",\n            lfloor: \"⌊\",\n            rfloor: \"⌋\",\n            loz: \"◊\",\n            spades: \"♠\",\n            clubs: \"♣\",\n            hearts: \"♥\",\n            diams: \"♦\"\n        });\n\n        /**\n         * @deprecated use `HTML_ENTITIES` instead\n         * @see HTML_ENTITIES\n         */\n        exports.entityMap = exports.HTML_ENTITIES;\n    });\n    entities.XML_ENTITIES;\n    entities.HTML_ENTITIES;\n    entities.entityMap;\n\n    var NAMESPACE$1 = conventions.NAMESPACE;\n\n    //[4]   \tNameStartChar\t   ::=   \t\":\" | [A-Z] | \"_\" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]\n    //[4a]   \tNameChar\t   ::=   \tNameStartChar | \"-\" | \".\" | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]\n    //[5]   \tName\t   ::=   \tNameStartChar (NameChar)*\n    var nameStartChar = /[A-Z_a-z\\xC0-\\xD6\\xD8-\\xF6\\u00F8-\\u02FF\\u0370-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD]/; //\\u10000-\\uEFFFF\n    var nameChar = new RegExp(\"[\\\\-\\\\.0-9\" + nameStartChar.source.slice(1, -1) + \"\\\\u00B7\\\\u0300-\\\\u036F\\\\u203F-\\\\u2040]\");\n    var tagNamePattern = new RegExp('^' + nameStartChar.source + nameChar.source + '*(?:\\:' + nameStartChar.source + nameChar.source + '*)?$');\n    //var tagNamePattern = /^[a-zA-Z_][\\w\\-\\.]*(?:\\:[a-zA-Z_][\\w\\-\\.]*)?$/\n    //var handlers = 'resolveEntity,getExternalSubset,characters,endDocument,endElement,endPrefixMapping,ignorableWhitespace,processingInstruction,setDocumentLocator,skippedEntity,startDocument,startElement,startPrefixMapping,notationDecl,unparsedEntityDecl,error,fatalError,warning,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,comment,endCDATA,endDTD,endEntity,startCDATA,startDTD,startEntity'.split(',')\n\n    //S_TAG,\tS_ATTR,\tS_EQ,\tS_ATTR_NOQUOT_VALUE\n    //S_ATTR_SPACE,\tS_ATTR_END,\tS_TAG_SPACE, S_TAG_CLOSE\n    var S_TAG = 0; //tag name offerring\n    var S_ATTR = 1; //attr name offerring\n    var S_ATTR_SPACE = 2; //attr name end and space offer\n    var S_EQ = 3; //=space?\n    var S_ATTR_NOQUOT_VALUE = 4; //attr value(no quot value only)\n    var S_ATTR_END = 5; //attr value end and no space(quot end)\n    var S_TAG_SPACE = 6; //(attr value end || tag end ) && (space offer)\n    var S_TAG_CLOSE = 7; //closed el<el />\n\n    /**\n     * Creates an error that will not be caught by XMLReader aka the SAX parser.\n     *\n     * @param {string} message\n     * @param {any?} locator Optional, can provide details about the location in the source\n     * @constructor\n     */\n    function ParseError$1(message, locator) {\n        this.message = message;\n        this.locator = locator;\n        if (Error.captureStackTrace) Error.captureStackTrace(this, ParseError$1);\n    }\n    ParseError$1.prototype = new Error();\n    ParseError$1.prototype.name = ParseError$1.name;\n    function XMLReader$1() {}\n    XMLReader$1.prototype = {\n        parse: function (source, defaultNSMap, entityMap) {\n            var domBuilder = this.domBuilder;\n            domBuilder.startDocument();\n            _copy(defaultNSMap, defaultNSMap = {});\n            parse$1(source, defaultNSMap, entityMap, domBuilder, this.errorHandler);\n            domBuilder.endDocument();\n        }\n    };\n    function parse$1(source, defaultNSMapCopy, entityMap, domBuilder, errorHandler) {\n        function fixedFromCharCode(code) {\n            // String.prototype.fromCharCode does not supports\n            // > 2 bytes unicode chars directly\n            if (code > 0xffff) {\n                code -= 0x10000;\n                var surrogate1 = 0xd800 + (code >> 10),\n                    surrogate2 = 0xdc00 + (code & 0x3ff);\n                return String.fromCharCode(surrogate1, surrogate2);\n            } else {\n                return String.fromCharCode(code);\n            }\n        }\n        function entityReplacer(a) {\n            var k = a.slice(1, -1);\n            if (Object.hasOwnProperty.call(entityMap, k)) {\n                return entityMap[k];\n            } else if (k.charAt(0) === '#') {\n                return fixedFromCharCode(parseInt(k.substr(1).replace('x', '0x')));\n            } else {\n                errorHandler.error('entity not found:' + a);\n                return a;\n            }\n        }\n        function appendText(end) {\n            //has some bugs\n            if (end > start) {\n                var xt = source.substring(start, end).replace(/&#?\\w+;/g, entityReplacer);\n                locator && position(start);\n                domBuilder.characters(xt, 0, end - start);\n                start = end;\n            }\n        }\n        function position(p, m) {\n            while (p >= lineEnd && (m = linePattern.exec(source))) {\n                lineStart = m.index;\n                lineEnd = lineStart + m[0].length;\n                locator.lineNumber++;\n                //console.log('line++:',locator,startPos,endPos)\n            }\n\n            locator.columnNumber = p - lineStart + 1;\n        }\n        var lineStart = 0;\n        var lineEnd = 0;\n        var linePattern = /.*(?:\\r\\n?|\\n)|.*$/g;\n        var locator = domBuilder.locator;\n        var parseStack = [{\n            currentNSMap: defaultNSMapCopy\n        }];\n        var closeMap = {};\n        var start = 0;\n        while (true) {\n            try {\n                var tagStart = source.indexOf('<', start);\n                if (tagStart < 0) {\n                    if (!source.substr(start).match(/^\\s*$/)) {\n                        var doc = domBuilder.doc;\n                        var text = doc.createTextNode(source.substr(start));\n                        doc.appendChild(text);\n                        domBuilder.currentElement = text;\n                    }\n                    return;\n                }\n                if (tagStart > start) {\n                    appendText(tagStart);\n                }\n                switch (source.charAt(tagStart + 1)) {\n                    case '/':\n                        var end = source.indexOf('>', tagStart + 3);\n                        var tagName = source.substring(tagStart + 2, end).replace(/[ \\t\\n\\r]+$/g, '');\n                        var config = parseStack.pop();\n                        if (end < 0) {\n                            tagName = source.substring(tagStart + 2).replace(/[\\s<].*/, '');\n                            errorHandler.error(\"end tag name: \" + tagName + ' is not complete:' + config.tagName);\n                            end = tagStart + 1 + tagName.length;\n                        } else if (tagName.match(/\\s</)) {\n                            tagName = tagName.replace(/[\\s<].*/, '');\n                            errorHandler.error(\"end tag name: \" + tagName + ' maybe not complete');\n                            end = tagStart + 1 + tagName.length;\n                        }\n                        var localNSMap = config.localNSMap;\n                        var endMatch = config.tagName == tagName;\n                        var endIgnoreCaseMach = endMatch || config.tagName && config.tagName.toLowerCase() == tagName.toLowerCase();\n                        if (endIgnoreCaseMach) {\n                            domBuilder.endElement(config.uri, config.localName, tagName);\n                            if (localNSMap) {\n                                for (var prefix in localNSMap) {\n                                    if (Object.prototype.hasOwnProperty.call(localNSMap, prefix)) {\n                                        domBuilder.endPrefixMapping(prefix);\n                                    }\n                                }\n                            }\n                            if (!endMatch) {\n                                errorHandler.fatalError(\"end tag name: \" + tagName + ' is not match the current start tagName:' + config.tagName); // No known test case\n                            }\n                        } else {\n                            parseStack.push(config);\n                        }\n                        end++;\n                        break;\n                    // end elment\n                    case '?':\n                        // <?...?>\n                        locator && position(tagStart);\n                        end = parseInstruction(source, tagStart, domBuilder);\n                        break;\n                    case '!':\n                        // <!doctype,<![CDATA,<!--\n                        locator && position(tagStart);\n                        end = parseDCC(source, tagStart, domBuilder, errorHandler);\n                        break;\n                    default:\n                        locator && position(tagStart);\n                        var el = new ElementAttributes();\n                        var currentNSMap = parseStack[parseStack.length - 1].currentNSMap;\n                        //elStartEnd\n                        var end = parseElementStartPart(source, tagStart, el, currentNSMap, entityReplacer, errorHandler);\n                        var len = el.length;\n                        if (!el.closed && fixSelfClosed(source, end, el.tagName, closeMap)) {\n                            el.closed = true;\n                            if (!entityMap.nbsp) {\n                                errorHandler.warning('unclosed xml attribute');\n                            }\n                        }\n                        if (locator && len) {\n                            var locator2 = copyLocator(locator, {});\n                            //try{//attribute position fixed\n                            for (var i = 0; i < len; i++) {\n                                var a = el[i];\n                                position(a.offset);\n                                a.locator = copyLocator(locator, {});\n                            }\n                            domBuilder.locator = locator2;\n                            if (appendElement$1(el, domBuilder, currentNSMap)) {\n                                parseStack.push(el);\n                            }\n                            domBuilder.locator = locator;\n                        } else {\n                            if (appendElement$1(el, domBuilder, currentNSMap)) {\n                                parseStack.push(el);\n                            }\n                        }\n                        if (NAMESPACE$1.isHTML(el.uri) && !el.closed) {\n                            end = parseHtmlSpecialContent(source, end, el.tagName, entityReplacer, domBuilder);\n                        } else {\n                            end++;\n                        }\n                }\n            } catch (e) {\n                if (e instanceof ParseError$1) {\n                    throw e;\n                }\n                errorHandler.error('element parse error: ' + e);\n                end = -1;\n            }\n            if (end > start) {\n                start = end;\n            } else {\n                //TODO: 这里有可能sax回退，有位置错误风险\n                appendText(Math.max(tagStart, start) + 1);\n            }\n        }\n    }\n    function copyLocator(f, t) {\n        t.lineNumber = f.lineNumber;\n        t.columnNumber = f.columnNumber;\n        return t;\n    }\n\n    /**\n     * @see #appendElement(source,elStartEnd,el,selfClosed,entityReplacer,domBuilder,parseStack);\n     * @return end of the elementStartPart(end of elementEndPart for selfClosed el)\n     */\n    function parseElementStartPart(source, start, el, currentNSMap, entityReplacer, errorHandler) {\n        /**\n         * @param {string} qname\n         * @param {string} value\n         * @param {number} startIndex\n         */\n        function addAttribute(qname, value, startIndex) {\n            if (el.attributeNames.hasOwnProperty(qname)) {\n                errorHandler.fatalError('Attribute ' + qname + ' redefined');\n            }\n            el.addValue(qname,\n                // @see https://www.w3.org/TR/xml/#AVNormalize\n                // since the xmldom sax parser does not \"interpret\" DTD the following is not implemented:\n                // - recursive replacement of (DTD) entity references\n                // - trimming and collapsing multiple spaces into a single one for attributes that are not of type CDATA\n                value.replace(/[\\t\\n\\r]/g, ' ').replace(/&#?\\w+;/g, entityReplacer), startIndex);\n        }\n        var attrName;\n        var value;\n        var p = ++start;\n        var s = S_TAG; //status\n        while (true) {\n            var c = source.charAt(p);\n            switch (c) {\n                case '=':\n                    if (s === S_ATTR) {\n                        //attrName\n                        attrName = source.slice(start, p);\n                        s = S_EQ;\n                    } else if (s === S_ATTR_SPACE) {\n                        s = S_EQ;\n                    } else {\n                        //fatalError: equal must after attrName or space after attrName\n                        throw new Error('attribute equal must after attrName'); // No known test case\n                    }\n\n                    break;\n                case '\\'':\n                case '\"':\n                    if (s === S_EQ || s === S_ATTR //|| s == S_ATTR_SPACE\n                    ) {\n                        //equal\n                        if (s === S_ATTR) {\n                            errorHandler.warning('attribute value must after \"=\"');\n                            attrName = source.slice(start, p);\n                        }\n                        start = p + 1;\n                        p = source.indexOf(c, start);\n                        if (p > 0) {\n                            value = source.slice(start, p);\n                            addAttribute(attrName, value, start - 1);\n                            s = S_ATTR_END;\n                        } else {\n                            //fatalError: no end quot match\n                            throw new Error('attribute value no end \\'' + c + '\\' match');\n                        }\n                    } else if (s == S_ATTR_NOQUOT_VALUE) {\n                        value = source.slice(start, p);\n                        addAttribute(attrName, value, start);\n                        errorHandler.warning('attribute \"' + attrName + '\" missed start quot(' + c + ')!!');\n                        start = p + 1;\n                        s = S_ATTR_END;\n                    } else {\n                        //fatalError: no equal before\n                        throw new Error('attribute value must after \"=\"'); // No known test case\n                    }\n\n                    break;\n                case '/':\n                    switch (s) {\n                        case S_TAG:\n                            el.setTagName(source.slice(start, p));\n                        case S_ATTR_END:\n                        case S_TAG_SPACE:\n                        case S_TAG_CLOSE:\n                            s = S_TAG_CLOSE;\n                            el.closed = true;\n                        case S_ATTR_NOQUOT_VALUE:\n                        case S_ATTR:\n                        case S_ATTR_SPACE:\n                            break;\n                        //case S_EQ:\n                        default:\n                            throw new Error(\"attribute invalid close char('/')\");\n                        // No known test case\n                    }\n\n                    break;\n                case '':\n                    //end document\n                    errorHandler.error('unexpected end of input');\n                    if (s == S_TAG) {\n                        el.setTagName(source.slice(start, p));\n                    }\n                    return p;\n                case '>':\n                    switch (s) {\n                        case S_TAG:\n                            el.setTagName(source.slice(start, p));\n                        case S_ATTR_END:\n                        case S_TAG_SPACE:\n                        case S_TAG_CLOSE:\n                            break;\n                        //normal\n                        case S_ATTR_NOQUOT_VALUE: //Compatible state\n                        case S_ATTR:\n                            value = source.slice(start, p);\n                            if (value.slice(-1) === '/') {\n                                el.closed = true;\n                                value = value.slice(0, -1);\n                            }\n                        case S_ATTR_SPACE:\n                            if (s === S_ATTR_SPACE) {\n                                value = attrName;\n                            }\n                            if (s == S_ATTR_NOQUOT_VALUE) {\n                                errorHandler.warning('attribute \"' + value + '\" missed quot(\")!');\n                                addAttribute(attrName, value, start);\n                            } else {\n                                if (!NAMESPACE$1.isHTML(currentNSMap['']) || !value.match(/^(?:disabled|checked|selected)$/i)) {\n                                    errorHandler.warning('attribute \"' + value + '\" missed value!! \"' + value + '\" instead!!');\n                                }\n                                addAttribute(value, value, start);\n                            }\n                            break;\n                        case S_EQ:\n                            throw new Error('attribute value missed!!');\n                    }\n                    //\t\t\tconsole.log(tagName,tagNamePattern,tagNamePattern.test(tagName))\n                    return p;\n                /*xml space '\\x20' | #x9 | #xD | #xA; */\n                case '\\u0080':\n                    c = ' ';\n                default:\n                    if (c <= ' ') {\n                        //space\n                        switch (s) {\n                            case S_TAG:\n                                el.setTagName(source.slice(start, p)); //tagName\n                                s = S_TAG_SPACE;\n                                break;\n                            case S_ATTR:\n                                attrName = source.slice(start, p);\n                                s = S_ATTR_SPACE;\n                                break;\n                            case S_ATTR_NOQUOT_VALUE:\n                                var value = source.slice(start, p);\n                                errorHandler.warning('attribute \"' + value + '\" missed quot(\")!!');\n                                addAttribute(attrName, value, start);\n                            case S_ATTR_END:\n                                s = S_TAG_SPACE;\n                                break;\n                            //case S_TAG_SPACE:\n                            //case S_EQ:\n                            //case S_ATTR_SPACE:\n                            //\tvoid();break;\n                            //case S_TAG_CLOSE:\n                            //ignore warning\n                        }\n                    } else {\n                        //not space\n                        //S_TAG,\tS_ATTR,\tS_EQ,\tS_ATTR_NOQUOT_VALUE\n                        //S_ATTR_SPACE,\tS_ATTR_END,\tS_TAG_SPACE, S_TAG_CLOSE\n                        switch (s) {\n                            //case S_TAG:void();break;\n                            //case S_ATTR:void();break;\n                            //case S_ATTR_NOQUOT_VALUE:void();break;\n                            case S_ATTR_SPACE:\n                                el.tagName;\n                                if (!NAMESPACE$1.isHTML(currentNSMap['']) || !attrName.match(/^(?:disabled|checked|selected)$/i)) {\n                                    errorHandler.warning('attribute \"' + attrName + '\" missed value!! \"' + attrName + '\" instead2!!');\n                                }\n                                addAttribute(attrName, attrName, start);\n                                start = p;\n                                s = S_ATTR;\n                                break;\n                            case S_ATTR_END:\n                                errorHandler.warning('attribute space is required\"' + attrName + '\"!!');\n                            case S_TAG_SPACE:\n                                s = S_ATTR;\n                                start = p;\n                                break;\n                            case S_EQ:\n                                s = S_ATTR_NOQUOT_VALUE;\n                                start = p;\n                                break;\n                            case S_TAG_CLOSE:\n                                throw new Error(\"elements closed character '/' and '>' must be connected to\");\n                        }\n                    }\n            } //end outer switch\n            //console.log('p++',p)\n            p++;\n        }\n    }\n    /**\n     * @return true if has new namespace define\n     */\n    function appendElement$1(el, domBuilder, currentNSMap) {\n        var tagName = el.tagName;\n        var localNSMap = null;\n        //var currentNSMap = parseStack[parseStack.length-1].currentNSMap;\n        var i = el.length;\n        while (i--) {\n            var a = el[i];\n            var qName = a.qName;\n            var value = a.value;\n            var nsp = qName.indexOf(':');\n            if (nsp > 0) {\n                var prefix = a.prefix = qName.slice(0, nsp);\n                var localName = qName.slice(nsp + 1);\n                var nsPrefix = prefix === 'xmlns' && localName;\n            } else {\n                localName = qName;\n                prefix = null;\n                nsPrefix = qName === 'xmlns' && '';\n            }\n            //can not set prefix,because prefix !== ''\n            a.localName = localName;\n            //prefix == null for no ns prefix attribute\n            if (nsPrefix !== false) {\n                //hack!!\n                if (localNSMap == null) {\n                    localNSMap = {};\n                    //console.log(currentNSMap,0)\n                    _copy(currentNSMap, currentNSMap = {});\n                    //console.log(currentNSMap,1)\n                }\n\n                currentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;\n                a.uri = NAMESPACE$1.XMLNS;\n                domBuilder.startPrefixMapping(nsPrefix, value);\n            }\n        }\n        var i = el.length;\n        while (i--) {\n            a = el[i];\n            var prefix = a.prefix;\n            if (prefix) {\n                //no prefix attribute has no namespace\n                if (prefix === 'xml') {\n                    a.uri = NAMESPACE$1.XML;\n                }\n                if (prefix !== 'xmlns') {\n                    a.uri = currentNSMap[prefix || ''];\n\n                    //{console.log('###'+a.qName,domBuilder.locator.systemId+'',currentNSMap,a.uri)}\n                }\n            }\n        }\n\n        var nsp = tagName.indexOf(':');\n        if (nsp > 0) {\n            prefix = el.prefix = tagName.slice(0, nsp);\n            localName = el.localName = tagName.slice(nsp + 1);\n        } else {\n            prefix = null; //important!!\n            localName = el.localName = tagName;\n        }\n        //no prefix element has default namespace\n        var ns = el.uri = currentNSMap[prefix || ''];\n        domBuilder.startElement(ns, localName, tagName, el);\n        //endPrefixMapping and startPrefixMapping have not any help for dom builder\n        //localNSMap = null\n        if (el.closed) {\n            domBuilder.endElement(ns, localName, tagName);\n            if (localNSMap) {\n                for (prefix in localNSMap) {\n                    if (Object.prototype.hasOwnProperty.call(localNSMap, prefix)) {\n                        domBuilder.endPrefixMapping(prefix);\n                    }\n                }\n            }\n        } else {\n            el.currentNSMap = currentNSMap;\n            el.localNSMap = localNSMap;\n            //parseStack.push(el);\n            return true;\n        }\n    }\n    function parseHtmlSpecialContent(source, elStartEnd, tagName, entityReplacer, domBuilder) {\n        if (/^(?:script|textarea)$/i.test(tagName)) {\n            var elEndStart = source.indexOf('</' + tagName + '>', elStartEnd);\n            var text = source.substring(elStartEnd + 1, elEndStart);\n            if (/[&<]/.test(text)) {\n                if (/^script$/i.test(tagName)) {\n                    //if(!/\\]\\]>/.test(text)){\n                    //lexHandler.startCDATA();\n                    domBuilder.characters(text, 0, text.length);\n                    //lexHandler.endCDATA();\n                    return elEndStart;\n                    //}\n                } //}else{//text area\n                text = text.replace(/&#?\\w+;/g, entityReplacer);\n                domBuilder.characters(text, 0, text.length);\n                return elEndStart;\n                //}\n            }\n        }\n\n        return elStartEnd + 1;\n    }\n    function fixSelfClosed(source, elStartEnd, tagName, closeMap) {\n        //if(tagName in closeMap){\n        var pos = closeMap[tagName];\n        if (pos == null) {\n            //console.log(tagName)\n            pos = source.lastIndexOf('</' + tagName + '>');\n            if (pos < elStartEnd) {\n                //忘记闭合\n                pos = source.lastIndexOf('</' + tagName);\n            }\n            closeMap[tagName] = pos;\n        }\n        return pos < elStartEnd;\n        //}\n    }\n\n    function _copy(source, target) {\n        for (var n in source) {\n            if (Object.prototype.hasOwnProperty.call(source, n)) {\n                target[n] = source[n];\n            }\n        }\n    }\n    function parseDCC(source, start, domBuilder, errorHandler) {\n        //sure start with '<!'\n        var next = source.charAt(start + 2);\n        switch (next) {\n            case '-':\n                if (source.charAt(start + 3) === '-') {\n                    var end = source.indexOf('-->', start + 4);\n                    //append comment source.substring(4,end)//<!--\n                    if (end > start) {\n                        domBuilder.comment(source, start + 4, end - start - 4);\n                        return end + 3;\n                    } else {\n                        errorHandler.error(\"Unclosed comment\");\n                        return -1;\n                    }\n                } else {\n                    //error\n                    return -1;\n                }\n            default:\n                if (source.substr(start + 3, 6) == 'CDATA[') {\n                    var end = source.indexOf(']]>', start + 9);\n                    domBuilder.startCDATA();\n                    domBuilder.characters(source, start + 9, end - start - 9);\n                    domBuilder.endCDATA();\n                    return end + 3;\n                }\n                //<!DOCTYPE\n                //startDTD(java.lang.String name, java.lang.String publicId, java.lang.String systemId)\n                var matchs = split(source, start);\n                var len = matchs.length;\n                if (len > 1 && /!doctype/i.test(matchs[0][0])) {\n                    var name = matchs[1][0];\n                    var pubid = false;\n                    var sysid = false;\n                    if (len > 3) {\n                        if (/^public$/i.test(matchs[2][0])) {\n                            pubid = matchs[3][0];\n                            sysid = len > 4 && matchs[4][0];\n                        } else if (/^system$/i.test(matchs[2][0])) {\n                            sysid = matchs[3][0];\n                        }\n                    }\n                    var lastMatch = matchs[len - 1];\n                    domBuilder.startDTD(name, pubid, sysid);\n                    domBuilder.endDTD();\n                    return lastMatch.index + lastMatch[0].length;\n                }\n        }\n        return -1;\n    }\n    function parseInstruction(source, start, domBuilder) {\n        var end = source.indexOf('?>', start);\n        if (end) {\n            var match = source.substring(start, end).match(/^<\\?(\\S*)\\s*([\\s\\S]*?)\\s*$/);\n            if (match) {\n                match[0].length;\n                domBuilder.processingInstruction(match[1], match[2]);\n                return end + 2;\n            } else {\n                //error\n                return -1;\n            }\n        }\n        return -1;\n    }\n    function ElementAttributes() {\n        this.attributeNames = {};\n    }\n    ElementAttributes.prototype = {\n        setTagName: function (tagName) {\n            if (!tagNamePattern.test(tagName)) {\n                throw new Error('invalid tagName:' + tagName);\n            }\n            this.tagName = tagName;\n        },\n        addValue: function (qName, value, offset) {\n            if (!tagNamePattern.test(qName)) {\n                throw new Error('invalid attribute:' + qName);\n            }\n            this.attributeNames[qName] = this.length;\n            this[this.length++] = {\n                qName: qName,\n                value: value,\n                offset: offset\n            };\n        },\n        length: 0,\n        getLocalName: function (i) {\n            return this[i].localName;\n        },\n        getLocator: function (i) {\n            return this[i].locator;\n        },\n        getQName: function (i) {\n            return this[i].qName;\n        },\n        getURI: function (i) {\n            return this[i].uri;\n        },\n        getValue: function (i) {\n            return this[i].value;\n        }\n        //\t,getIndex:function(uri, localName)){\n        //\t\tif(localName){\n        //\n        //\t\t}else{\n        //\t\t\tvar qName = uri\n        //\t\t}\n        //\t},\n        //\tgetValue:function(){return this.getValue(this.getIndex.apply(this,arguments))},\n        //\tgetType:function(uri,localName){}\n        //\tgetType:function(i){},\n    };\n\n    function split(source, start) {\n        var match;\n        var buf = [];\n        var reg = /'[^']+'|\"[^\"]+\"|[^\\s<>\\/=]+=?|(\\/?\\s*>|<)/g;\n        reg.lastIndex = start;\n        reg.exec(source); //skip <\n        while (match = reg.exec(source)) {\n            buf.push(match);\n            if (match[1]) return buf;\n        }\n    }\n    var XMLReader_1 = XMLReader$1;\n    var ParseError_1 = ParseError$1;\n    var sax = {\n        XMLReader: XMLReader_1,\n        ParseError: ParseError_1\n    };\n\n    var DOMImplementation = dom.DOMImplementation;\n    var NAMESPACE = conventions.NAMESPACE;\n    var ParseError = sax.ParseError;\n    var XMLReader = sax.XMLReader;\n\n    /**\n     * Normalizes line ending according to https://www.w3.org/TR/xml11/#sec-line-ends:\n     *\n     * > XML parsed entities are often stored in computer files which,\n     * > for editing convenience, are organized into lines.\n     * > These lines are typically separated by some combination\n     * > of the characters CARRIAGE RETURN (#xD) and LINE FEED (#xA).\n     * >\n     * > To simplify the tasks of applications, the XML processor must behave\n     * > as if it normalized all line breaks in external parsed entities (including the document entity)\n     * > on input, before parsing, by translating all of the following to a single #xA character:\n     * >\n     * > 1. the two-character sequence #xD #xA\n     * > 2. the two-character sequence #xD #x85\n     * > 3. the single character #x85\n     * > 4. the single character #x2028\n     * > 5. any #xD character that is not immediately followed by #xA or #x85.\n     *\n     * @param {string} input\n     * @returns {string}\n     */\n    function normalizeLineEndings(input) {\n        return input.replace(/\\r[\\n\\u0085]/g, '\\n').replace(/[\\r\\u0085\\u2028]/g, '\\n');\n    }\n\n    /**\n     * @typedef Locator\n     * @property {number} [columnNumber]\n     * @property {number} [lineNumber]\n     */\n\n    /**\n     * @typedef DOMParserOptions\n     * @property {DOMHandler} [domBuilder]\n     * @property {Function} [errorHandler]\n     * @property {(string) => string} [normalizeLineEndings] used to replace line endings before parsing\n     * \t\t\t\t\t\tdefaults to `normalizeLineEndings`\n     * @property {Locator} [locator]\n     * @property {Record<string, string>} [xmlns]\n     *\n     * @see normalizeLineEndings\n     */\n\n    /**\n     * The DOMParser interface provides the ability to parse XML or HTML source code\n     * from a string into a DOM `Document`.\n     *\n     * _xmldom is different from the spec in that it allows an `options` parameter,\n     * to override the default behavior._\n     *\n     * @param {DOMParserOptions} [options]\n     * @constructor\n     *\n     * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser\n     * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-parsing-and-serialization\n     */\n    function DOMParser$1(options) {\n        this.options = options || {\n            locator: {}\n        };\n    }\n    DOMParser$1.prototype.parseFromString = function (source, mimeType) {\n        var options = this.options;\n        var sax = new XMLReader();\n        var domBuilder = options.domBuilder || new DOMHandler(); //contentHandler and LexicalHandler\n        var errorHandler = options.errorHandler;\n        var locator = options.locator;\n        var defaultNSMap = options.xmlns || {};\n        var isHTML = /\\/x?html?$/.test(mimeType); //mimeType.toLowerCase().indexOf('html') > -1;\n        var entityMap = isHTML ? entities.HTML_ENTITIES : entities.XML_ENTITIES;\n        if (locator) {\n            domBuilder.setDocumentLocator(locator);\n        }\n        sax.errorHandler = buildErrorHandler(errorHandler, domBuilder, locator);\n        sax.domBuilder = options.domBuilder || domBuilder;\n        if (isHTML) {\n            defaultNSMap[''] = NAMESPACE.HTML;\n        }\n        defaultNSMap.xml = defaultNSMap.xml || NAMESPACE.XML;\n        var normalize = options.normalizeLineEndings || normalizeLineEndings;\n        if (source && typeof source === 'string') {\n            sax.parse(normalize(source), defaultNSMap, entityMap);\n        } else {\n            sax.errorHandler.error('invalid doc source');\n        }\n        return domBuilder.doc;\n    };\n    function buildErrorHandler(errorImpl, domBuilder, locator) {\n        if (!errorImpl) {\n            if (domBuilder instanceof DOMHandler) {\n                return domBuilder;\n            }\n            errorImpl = domBuilder;\n        }\n        var errorHandler = {};\n        var isCallback = errorImpl instanceof Function;\n        locator = locator || {};\n        function build(key) {\n            var fn = errorImpl[key];\n            if (!fn && isCallback) {\n                fn = errorImpl.length == 2 ? function (msg) {\n                    errorImpl(key, msg);\n                } : errorImpl;\n            }\n            errorHandler[key] = fn && function (msg) {\n                fn('[xmldom ' + key + ']\\t' + msg + _locator(locator));\n            } || function () {};\n        }\n        build('warning');\n        build('error');\n        build('fatalError');\n        return errorHandler;\n    }\n\n    //console.log('#\\n\\n\\n\\n\\n\\n\\n####')\n    /**\n     * +ContentHandler+ErrorHandler\n     * +LexicalHandler+EntityResolver2\n     * -DeclHandler-DTDHandler\n     *\n     * DefaultHandler:EntityResolver, DTDHandler, ContentHandler, ErrorHandler\n     * DefaultHandler2:DefaultHandler,LexicalHandler, DeclHandler, EntityResolver2\n     * @link http://www.saxproject.org/apidoc/org/xml/sax/helpers/DefaultHandler.html\n     */\n    function DOMHandler() {\n        this.cdata = false;\n    }\n    function position(locator, node) {\n        node.lineNumber = locator.lineNumber;\n        node.columnNumber = locator.columnNumber;\n    }\n    /**\n     * @see org.xml.sax.ContentHandler#startDocument\n     * @link http://www.saxproject.org/apidoc/org/xml/sax/ContentHandler.html\n     */\n    DOMHandler.prototype = {\n        startDocument: function () {\n            this.doc = new DOMImplementation().createDocument(null, null, null);\n            if (this.locator) {\n                this.doc.documentURI = this.locator.systemId;\n            }\n        },\n        startElement: function (namespaceURI, localName, qName, attrs) {\n            var doc = this.doc;\n            var el = doc.createElementNS(namespaceURI, qName || localName);\n            var len = attrs.length;\n            appendElement(this, el);\n            this.currentElement = el;\n            this.locator && position(this.locator, el);\n            for (var i = 0; i < len; i++) {\n                var namespaceURI = attrs.getURI(i);\n                var value = attrs.getValue(i);\n                var qName = attrs.getQName(i);\n                var attr = doc.createAttributeNS(namespaceURI, qName);\n                this.locator && position(attrs.getLocator(i), attr);\n                attr.value = attr.nodeValue = value;\n                el.setAttributeNode(attr);\n            }\n        },\n        endElement: function (namespaceURI, localName, qName) {\n            var current = this.currentElement;\n            current.tagName;\n            this.currentElement = current.parentNode;\n        },\n        startPrefixMapping: function (prefix, uri) {},\n        endPrefixMapping: function (prefix) {},\n        processingInstruction: function (target, data) {\n            var ins = this.doc.createProcessingInstruction(target, data);\n            this.locator && position(this.locator, ins);\n            appendElement(this, ins);\n        },\n        ignorableWhitespace: function (ch, start, length) {},\n        characters: function (chars, start, length) {\n            chars = _toString.apply(this, arguments);\n            //console.log(chars)\n            if (chars) {\n                if (this.cdata) {\n                    var charNode = this.doc.createCDATASection(chars);\n                } else {\n                    var charNode = this.doc.createTextNode(chars);\n                }\n                if (this.currentElement) {\n                    this.currentElement.appendChild(charNode);\n                } else if (/^\\s*$/.test(chars)) {\n                    this.doc.appendChild(charNode);\n                    //process xml\n                }\n\n                this.locator && position(this.locator, charNode);\n            }\n        },\n        skippedEntity: function (name) {},\n        endDocument: function () {\n            this.doc.normalize();\n        },\n        setDocumentLocator: function (locator) {\n            if (this.locator = locator) {\n                // && !('lineNumber' in locator)){\n                locator.lineNumber = 0;\n            }\n        },\n        //LexicalHandler\n        comment: function (chars, start, length) {\n            chars = _toString.apply(this, arguments);\n            var comm = this.doc.createComment(chars);\n            this.locator && position(this.locator, comm);\n            appendElement(this, comm);\n        },\n        startCDATA: function () {\n            //used in characters() methods\n            this.cdata = true;\n        },\n        endCDATA: function () {\n            this.cdata = false;\n        },\n        startDTD: function (name, publicId, systemId) {\n            var impl = this.doc.implementation;\n            if (impl && impl.createDocumentType) {\n                var dt = impl.createDocumentType(name, publicId, systemId);\n                this.locator && position(this.locator, dt);\n                appendElement(this, dt);\n                this.doc.doctype = dt;\n            }\n        },\n        /**\n         * @see org.xml.sax.ErrorHandler\n         * @link http://www.saxproject.org/apidoc/org/xml/sax/ErrorHandler.html\n         */\n        warning: function (error) {\n            console.warn('[xmldom warning]\\t' + error, _locator(this.locator));\n        },\n        error: function (error) {\n            console.error('[xmldom error]\\t' + error, _locator(this.locator));\n        },\n        fatalError: function (error) {\n            throw new ParseError(error, this.locator);\n        }\n    };\n    function _locator(l) {\n        if (l) {\n            return '\\n@' + (l.systemId || '') + '#[line:' + l.lineNumber + ',col:' + l.columnNumber + ']';\n        }\n    }\n    function _toString(chars, start, length) {\n        if (typeof chars == 'string') {\n            return chars.substr(start, length);\n        } else {\n            //java sax connect width xmldom on rhino(what about: \"? && !(chars instanceof String)\")\n            if (chars.length >= start + length || start) {\n                return new java.lang.String(chars, start, length) + '';\n            }\n            return chars;\n        }\n    }\n\n    /*\n   * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/LexicalHandler.html\n   * used method of org.xml.sax.ext.LexicalHandler:\n   *  #comment(chars, start, length)\n   *  #startCDATA()\n   *  #endCDATA()\n   *  #startDTD(name, publicId, systemId)\n   *\n   *\n   * IGNORED method of org.xml.sax.ext.LexicalHandler:\n   *  #endDTD()\n   *  #startEntity(name)\n   *  #endEntity(name)\n   *\n   *\n   * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/DeclHandler.html\n   * IGNORED method of org.xml.sax.ext.DeclHandler\n   * \t#attributeDecl(eName, aName, type, mode, value)\n   *  #elementDecl(name, model)\n   *  #externalEntityDecl(name, publicId, systemId)\n   *  #internalEntityDecl(name, value)\n   * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/EntityResolver2.html\n   * IGNORED method of org.xml.sax.EntityResolver2\n   *  #resolveEntity(String name,String publicId,String baseURI,String systemId)\n   *  #resolveEntity(publicId, systemId)\n   *  #getExternalSubset(name, baseURI)\n   * @link http://www.saxproject.org/apidoc/org/xml/sax/DTDHandler.html\n   * IGNORED method of org.xml.sax.DTDHandler\n   *  #notationDecl(name, publicId, systemId) {};\n   *  #unparsedEntityDecl(name, publicId, systemId, notationName) {};\n   */\n    \"endDTD,startEntity,endEntity,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,resolveEntity,getExternalSubset,notationDecl,unparsedEntityDecl\".replace(/\\w+/g, function (key) {\n        DOMHandler.prototype[key] = function () {\n            return null;\n        };\n    });\n\n    /* Private static helpers treated below as private instance methods, so don't need to add these to the public API; we might use a Relator to also get rid of non-standard public properties */\n    function appendElement(hander, node) {\n        if (!hander.currentElement) {\n            hander.doc.appendChild(node);\n        } else {\n            hander.currentElement.appendChild(node);\n        }\n    } //appendChild and setAttributeNS are preformance key\n\n    var __DOMHandler = DOMHandler;\n    var normalizeLineEndings_1 = normalizeLineEndings;\n    var DOMParser_1 = DOMParser$1;\n    var domParser = {\n        __DOMHandler: __DOMHandler,\n        normalizeLineEndings: normalizeLineEndings_1,\n        DOMParser: DOMParser_1\n    };\n\n    var DOMParser = domParser.DOMParser;\n\n    /*! @name mpd-parser @version 1.0.1 @license Apache-2.0 */\n    const isObject = obj => {\n        return !!obj && typeof obj === 'object';\n    };\n    const merge$1 = (...objects) => {\n        return objects.reduce((result, source) => {\n            if (typeof source !== 'object') {\n                return result;\n            }\n            Object.keys(source).forEach(key => {\n                if (Array.isArray(result[key]) && Array.isArray(source[key])) {\n                    result[key] = result[key].concat(source[key]);\n                } else if (isObject(result[key]) && isObject(source[key])) {\n                    result[key] = merge$1(result[key], source[key]);\n                } else {\n                    result[key] = source[key];\n                }\n            });\n            return result;\n        }, {});\n    };\n    const values = o => Object.keys(o).map(k => o[k]);\n    const range = (start, end) => {\n        const result = [];\n        for (let i = start; i < end; i++) {\n            result.push(i);\n        }\n        return result;\n    };\n    const flatten = lists => lists.reduce((x, y) => x.concat(y), []);\n    const from = list => {\n        if (!list.length) {\n            return [];\n        }\n        const result = [];\n        for (let i = 0; i < list.length; i++) {\n            result.push(list[i]);\n        }\n        return result;\n    };\n    const findIndexes = (l, key) => l.reduce((a, e, i) => {\n        if (e[key]) {\n            a.push(i);\n        }\n        return a;\n    }, []);\n    /**\n     * Returns a union of the included lists provided each element can be identified by a key.\n     *\n     * @param {Array} list - list of lists to get the union of\n     * @param {Function} keyFunction - the function to use as a key for each element\n     *\n     * @return {Array} the union of the arrays\n     */\n\n    const union = (lists, keyFunction) => {\n        return values(lists.reduce((acc, list) => {\n            list.forEach(el => {\n                acc[keyFunction(el)] = el;\n            });\n            return acc;\n        }, {}));\n    };\n    var errors = {\n        INVALID_NUMBER_OF_PERIOD: 'INVALID_NUMBER_OF_PERIOD',\n        DASH_EMPTY_MANIFEST: 'DASH_EMPTY_MANIFEST',\n        DASH_INVALID_XML: 'DASH_INVALID_XML',\n        NO_BASE_URL: 'NO_BASE_URL',\n        MISSING_SEGMENT_INFORMATION: 'MISSING_SEGMENT_INFORMATION',\n        SEGMENT_TIME_UNSPECIFIED: 'SEGMENT_TIME_UNSPECIFIED',\n        UNSUPPORTED_UTC_TIMING_SCHEME: 'UNSUPPORTED_UTC_TIMING_SCHEME'\n    };\n\n    /**\n     * @typedef {Object} SingleUri\n     * @property {string} uri - relative location of segment\n     * @property {string} resolvedUri - resolved location of segment\n     * @property {Object} byterange - Object containing information on how to make byte range\n     *   requests following byte-range-spec per RFC2616.\n     * @property {String} byterange.length - length of range request\n     * @property {String} byterange.offset - byte offset of range request\n     *\n     * @see https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.1\n     */\n\n    /**\n     * Converts a URLType node (5.3.9.2.3 Table 13) to a segment object\n     * that conforms to how m3u8-parser is structured\n     *\n     * @see https://github.com/videojs/m3u8-parser\n     *\n     * @param {string} baseUrl - baseUrl provided by <BaseUrl> nodes\n     * @param {string} source - source url for segment\n     * @param {string} range - optional range used for range calls,\n     *   follows  RFC 2616, Clause 14.35.1\n     * @return {SingleUri} full segment information transformed into a format similar\n     *   to m3u8-parser\n     */\n\n    const urlTypeToSegment = ({\n                                  baseUrl = '',\n                                  source = '',\n                                  range = '',\n                                  indexRange = ''\n                              }) => {\n        const segment = {\n            uri: source,\n            resolvedUri: resolveUrl$1(baseUrl || '', source)\n        };\n        if (range || indexRange) {\n            const rangeStr = range ? range : indexRange;\n            const ranges = rangeStr.split('-'); // default to parsing this as a BigInt if possible\n\n            let startRange = window.BigInt ? window.BigInt(ranges[0]) : parseInt(ranges[0], 10);\n            let endRange = window.BigInt ? window.BigInt(ranges[1]) : parseInt(ranges[1], 10); // convert back to a number if less than MAX_SAFE_INTEGER\n\n            if (startRange < Number.MAX_SAFE_INTEGER && typeof startRange === 'bigint') {\n                startRange = Number(startRange);\n            }\n            if (endRange < Number.MAX_SAFE_INTEGER && typeof endRange === 'bigint') {\n                endRange = Number(endRange);\n            }\n            let length;\n            if (typeof endRange === 'bigint' || typeof startRange === 'bigint') {\n                length = window.BigInt(endRange) - window.BigInt(startRange) + window.BigInt(1);\n            } else {\n                length = endRange - startRange + 1;\n            }\n            if (typeof length === 'bigint' && length < Number.MAX_SAFE_INTEGER) {\n                length = Number(length);\n            } // byterange should be inclusive according to\n            // RFC 2616, Clause 14.35.1\n\n            segment.byterange = {\n                length,\n                offset: startRange\n            };\n        }\n        return segment;\n    };\n    const byteRangeToString = byterange => {\n        // `endRange` is one less than `offset + length` because the HTTP range\n        // header uses inclusive ranges\n        let endRange;\n        if (typeof byterange.offset === 'bigint' || typeof byterange.length === 'bigint') {\n            endRange = window.BigInt(byterange.offset) + window.BigInt(byterange.length) - window.BigInt(1);\n        } else {\n            endRange = byterange.offset + byterange.length - 1;\n        }\n        return `${byterange.offset}-${endRange}`;\n    };\n\n    /**\n     * parse the end number attribue that can be a string\n     * number, or undefined.\n     *\n     * @param {string|number|undefined} endNumber\n     *        The end number attribute.\n     *\n     * @return {number|null}\n     *          The result of parsing the end number.\n     */\n\n    const parseEndNumber = endNumber => {\n        if (endNumber && typeof endNumber !== 'number') {\n            endNumber = parseInt(endNumber, 10);\n        }\n        if (isNaN(endNumber)) {\n            return null;\n        }\n        return endNumber;\n    };\n    /**\n     * Functions for calculating the range of available segments in static and dynamic\n     * manifests.\n     */\n\n    const segmentRange = {\n        /**\n         * Returns the entire range of available segments for a static MPD\n         *\n         * @param {Object} attributes\n         *        Inheritied MPD attributes\n         * @return {{ start: number, end: number }}\n         *         The start and end numbers for available segments\n         */\n        static(attributes) {\n            const {\n                duration,\n                timescale = 1,\n                sourceDuration,\n                periodDuration\n            } = attributes;\n            const endNumber = parseEndNumber(attributes.endNumber);\n            const segmentDuration = duration / timescale;\n            if (typeof endNumber === 'number') {\n                return {\n                    start: 0,\n                    end: endNumber\n                };\n            }\n            if (typeof periodDuration === 'number') {\n                return {\n                    start: 0,\n                    end: periodDuration / segmentDuration\n                };\n            }\n            return {\n                start: 0,\n                end: sourceDuration / segmentDuration\n            };\n        },\n        /**\n         * Returns the current live window range of available segments for a dynamic MPD\n         *\n         * @param {Object} attributes\n         *        Inheritied MPD attributes\n         * @return {{ start: number, end: number }}\n         *         The start and end numbers for available segments\n         */\n        dynamic(attributes) {\n            const {\n                NOW,\n                clientOffset,\n                availabilityStartTime,\n                timescale = 1,\n                duration,\n                periodStart = 0,\n                minimumUpdatePeriod = 0,\n                timeShiftBufferDepth = Infinity\n            } = attributes;\n            const endNumber = parseEndNumber(attributes.endNumber); // clientOffset is passed in at the top level of mpd-parser and is an offset calculated\n            // after retrieving UTC server time.\n\n            const now = (NOW + clientOffset) / 1000; // WC stands for Wall Clock.\n            // Convert the period start time to EPOCH.\n\n            const periodStartWC = availabilityStartTime + periodStart; // Period end in EPOCH is manifest's retrieval time + time until next update.\n\n            const periodEndWC = now + minimumUpdatePeriod;\n            const periodDuration = periodEndWC - periodStartWC;\n            const segmentCount = Math.ceil(periodDuration * timescale / duration);\n            const availableStart = Math.floor((now - periodStartWC - timeShiftBufferDepth) * timescale / duration);\n            const availableEnd = Math.floor((now - periodStartWC) * timescale / duration);\n            return {\n                start: Math.max(0, availableStart),\n                end: typeof endNumber === 'number' ? endNumber : Math.min(segmentCount, availableEnd)\n            };\n        }\n    };\n    /**\n     * Maps a range of numbers to objects with information needed to build the corresponding\n     * segment list\n     *\n     * @name toSegmentsCallback\n     * @function\n     * @param {number} number\n     *        Number of the segment\n     * @param {number} index\n     *        Index of the number in the range list\n     * @return {{ number: Number, duration: Number, timeline: Number, time: Number }}\n     *         Object with segment timing and duration info\n     */\n\n    /**\n     * Returns a callback for Array.prototype.map for mapping a range of numbers to\n     * information needed to build the segment list.\n     *\n     * @param {Object} attributes\n     *        Inherited MPD attributes\n     * @return {toSegmentsCallback}\n     *         Callback map function\n     */\n\n    const toSegments = attributes => number => {\n        const {\n            duration,\n            timescale = 1,\n            periodStart,\n            startNumber = 1\n        } = attributes;\n        return {\n            number: startNumber + number,\n            duration: duration / timescale,\n            timeline: periodStart,\n            time: number * duration\n        };\n    };\n    /**\n     * Returns a list of objects containing segment timing and duration info used for\n     * building the list of segments. This uses the @duration attribute specified\n     * in the MPD manifest to derive the range of segments.\n     *\n     * @param {Object} attributes\n     *        Inherited MPD attributes\n     * @return {{number: number, duration: number, time: number, timeline: number}[]}\n     *         List of Objects with segment timing and duration info\n     */\n\n    const parseByDuration = attributes => {\n        const {\n            type,\n            duration,\n            timescale = 1,\n            periodDuration,\n            sourceDuration\n        } = attributes;\n        const {\n            start,\n            end\n        } = segmentRange[type](attributes);\n        const segments = range(start, end).map(toSegments(attributes));\n        if (type === 'static') {\n            const index = segments.length - 1; // section is either a period or the full source\n\n            const sectionDuration = typeof periodDuration === 'number' ? periodDuration : sourceDuration; // final segment may be less than full segment duration\n\n            segments[index].duration = sectionDuration - duration / timescale * index;\n        }\n        return segments;\n    };\n\n    /**\n     * Translates SegmentBase into a set of segments.\n     * (DASH SPEC Section 5.3.9.3.2) contains a set of <SegmentURL> nodes.  Each\n     * node should be translated into segment.\n     *\n     * @param {Object} attributes\n     *   Object containing all inherited attributes from parent elements with attribute\n     *   names as keys\n     * @return {Object.<Array>} list of segments\n     */\n\n    const segmentsFromBase = attributes => {\n        const {\n            baseUrl,\n            initialization = {},\n            sourceDuration,\n            indexRange = '',\n            periodStart,\n            presentationTime,\n            number = 0,\n            duration\n        } = attributes; // base url is required for SegmentBase to work, per spec (Section 5.3.9.2.1)\n\n        if (!baseUrl) {\n            throw new Error(errors.NO_BASE_URL);\n        }\n        const initSegment = urlTypeToSegment({\n            baseUrl,\n            source: initialization.sourceURL,\n            range: initialization.range\n        });\n        const segment = urlTypeToSegment({\n            baseUrl,\n            source: baseUrl,\n            indexRange\n        });\n        segment.map = initSegment; // If there is a duration, use it, otherwise use the given duration of the source\n        // (since SegmentBase is only for one total segment)\n\n        if (duration) {\n            const segmentTimeInfo = parseByDuration(attributes);\n            if (segmentTimeInfo.length) {\n                segment.duration = segmentTimeInfo[0].duration;\n                segment.timeline = segmentTimeInfo[0].timeline;\n            }\n        } else if (sourceDuration) {\n            segment.duration = sourceDuration;\n            segment.timeline = periodStart;\n        } // If presentation time is provided, these segments are being generated by SIDX\n        // references, and should use the time provided. For the general case of SegmentBase,\n        // there should only be one segment in the period, so its presentation time is the same\n        // as its period start.\n\n        segment.presentationTime = presentationTime || periodStart;\n        segment.number = number;\n        return [segment];\n    };\n    /**\n     * Given a playlist, a sidx box, and a baseUrl, update the segment list of the playlist\n     * according to the sidx information given.\n     *\n     * playlist.sidx has metadadata about the sidx where-as the sidx param\n     * is the parsed sidx box itself.\n     *\n     * @param {Object} playlist the playlist to update the sidx information for\n     * @param {Object} sidx the parsed sidx box\n     * @return {Object} the playlist object with the updated sidx information\n     */\n\n    const addSidxSegmentsToPlaylist$1 = (playlist, sidx, baseUrl) => {\n        // Retain init segment information\n        const initSegment = playlist.sidx.map ? playlist.sidx.map : null; // Retain source duration from initial main manifest parsing\n\n        const sourceDuration = playlist.sidx.duration; // Retain source timeline\n\n        const timeline = playlist.timeline || 0;\n        const sidxByteRange = playlist.sidx.byterange;\n        const sidxEnd = sidxByteRange.offset + sidxByteRange.length; // Retain timescale of the parsed sidx\n\n        const timescale = sidx.timescale; // referenceType 1 refers to other sidx boxes\n\n        const mediaReferences = sidx.references.filter(r => r.referenceType !== 1);\n        const segments = [];\n        const type = playlist.endList ? 'static' : 'dynamic';\n        const periodStart = playlist.sidx.timeline;\n        let presentationTime = periodStart;\n        let number = playlist.mediaSequence || 0; // firstOffset is the offset from the end of the sidx box\n\n        let startIndex; // eslint-disable-next-line\n\n        if (typeof sidx.firstOffset === 'bigint') {\n            startIndex = window.BigInt(sidxEnd) + sidx.firstOffset;\n        } else {\n            startIndex = sidxEnd + sidx.firstOffset;\n        }\n        for (let i = 0; i < mediaReferences.length; i++) {\n            const reference = sidx.references[i]; // size of the referenced (sub)segment\n\n            const size = reference.referencedSize; // duration of the referenced (sub)segment, in  the  timescale\n            // this will be converted to seconds when generating segments\n\n            const duration = reference.subsegmentDuration; // should be an inclusive range\n\n            let endIndex; // eslint-disable-next-line\n\n            if (typeof startIndex === 'bigint') {\n                endIndex = startIndex + window.BigInt(size) - window.BigInt(1);\n            } else {\n                endIndex = startIndex + size - 1;\n            }\n            const indexRange = `${startIndex}-${endIndex}`;\n            const attributes = {\n                baseUrl,\n                timescale,\n                timeline,\n                periodStart,\n                presentationTime,\n                number,\n                duration,\n                sourceDuration,\n                indexRange,\n                type\n            };\n            const segment = segmentsFromBase(attributes)[0];\n            if (initSegment) {\n                segment.map = initSegment;\n            }\n            segments.push(segment);\n            if (typeof startIndex === 'bigint') {\n                startIndex += window.BigInt(size);\n            } else {\n                startIndex += size;\n            }\n            presentationTime += duration / timescale;\n            number++;\n        }\n        playlist.segments = segments;\n        return playlist;\n    };\n    const SUPPORTED_MEDIA_TYPES = ['AUDIO', 'SUBTITLES']; // allow one 60fps frame as leniency (arbitrarily chosen)\n\n    const TIME_FUDGE = 1 / 60;\n    /**\n     * Given a list of timelineStarts, combines, dedupes, and sorts them.\n     *\n     * @param {TimelineStart[]} timelineStarts - list of timeline starts\n     *\n     * @return {TimelineStart[]} the combined and deduped timeline starts\n     */\n\n    const getUniqueTimelineStarts = timelineStarts => {\n        return union(timelineStarts, ({\n                                          timeline\n                                      }) => timeline).sort((a, b) => a.timeline > b.timeline ? 1 : -1);\n    };\n    /**\n     * Finds the playlist with the matching NAME attribute.\n     *\n     * @param {Array} playlists - playlists to search through\n     * @param {string} name - the NAME attribute to search for\n     *\n     * @return {Object|null} the matching playlist object, or null\n     */\n\n    const findPlaylistWithName = (playlists, name) => {\n        for (let i = 0; i < playlists.length; i++) {\n            if (playlists[i].attributes.NAME === name) {\n                return playlists[i];\n            }\n        }\n        return null;\n    };\n    /**\n     * Gets a flattened array of media group playlists.\n     *\n     * @param {Object} manifest - the main manifest object\n     *\n     * @return {Array} the media group playlists\n     */\n\n    const getMediaGroupPlaylists = manifest => {\n        let mediaGroupPlaylists = [];\n        forEachMediaGroup$1(manifest, SUPPORTED_MEDIA_TYPES, (properties, type, group, label) => {\n            mediaGroupPlaylists = mediaGroupPlaylists.concat(properties.playlists || []);\n        });\n        return mediaGroupPlaylists;\n    };\n    /**\n     * Updates the playlist's media sequence numbers.\n     *\n     * @param {Object} config - options object\n     * @param {Object} config.playlist - the playlist to update\n     * @param {number} config.mediaSequence - the mediaSequence number to start with\n     */\n\n    const updateMediaSequenceForPlaylist = ({\n                                                playlist,\n                                                mediaSequence\n                                            }) => {\n        playlist.mediaSequence = mediaSequence;\n        playlist.segments.forEach((segment, index) => {\n            segment.number = playlist.mediaSequence + index;\n        });\n    };\n    /**\n     * Updates the media and discontinuity sequence numbers of newPlaylists given oldPlaylists\n     * and a complete list of timeline starts.\n     *\n     * If no matching playlist is found, only the discontinuity sequence number of the playlist\n     * will be updated.\n     *\n     * Since early available timelines are not supported, at least one segment must be present.\n     *\n     * @param {Object} config - options object\n     * @param {Object[]} oldPlaylists - the old playlists to use as a reference\n     * @param {Object[]} newPlaylists - the new playlists to update\n     * @param {Object} timelineStarts - all timelineStarts seen in the stream to this point\n     */\n\n    const updateSequenceNumbers = ({\n                                       oldPlaylists,\n                                       newPlaylists,\n                                       timelineStarts\n                                   }) => {\n        newPlaylists.forEach(playlist => {\n            playlist.discontinuitySequence = timelineStarts.findIndex(function ({\n                                                                                    timeline\n                                                                                }) {\n                return timeline === playlist.timeline;\n            }); // Playlists NAMEs come from DASH Representation IDs, which are mandatory\n            // (see ISO_23009-1-2012 5.3.5.2).\n            //\n            // If the same Representation existed in a prior Period, it will retain the same NAME.\n\n            const oldPlaylist = findPlaylistWithName(oldPlaylists, playlist.attributes.NAME);\n            if (!oldPlaylist) {\n                // Since this is a new playlist, the media sequence values can start from 0 without\n                // consequence.\n                return;\n            } // TODO better support for live SIDX\n            //\n            // As of this writing, mpd-parser does not support multiperiod SIDX (in live or VOD).\n            // This is evident by a playlist only having a single SIDX reference. In a multiperiod\n            // playlist there would need to be multiple SIDX references. In addition, live SIDX is\n            // not supported when the SIDX properties change on refreshes.\n            //\n            // In the future, if support needs to be added, the merging logic here can be called\n            // after SIDX references are resolved. For now, exit early to prevent exceptions being\n            // thrown due to undefined references.\n\n            if (playlist.sidx) {\n                return;\n            } // Since we don't yet support early available timelines, we don't need to support\n            // playlists with no segments.\n\n            const firstNewSegment = playlist.segments[0];\n            const oldMatchingSegmentIndex = oldPlaylist.segments.findIndex(function (oldSegment) {\n                return Math.abs(oldSegment.presentationTime - firstNewSegment.presentationTime) < TIME_FUDGE;\n            }); // No matching segment from the old playlist means the entire playlist was refreshed.\n            // In this case the media sequence should account for this update, and the new segments\n            // should be marked as discontinuous from the prior content, since the last prior\n            // timeline was removed.\n\n            if (oldMatchingSegmentIndex === -1) {\n                updateMediaSequenceForPlaylist({\n                    playlist,\n                    mediaSequence: oldPlaylist.mediaSequence + oldPlaylist.segments.length\n                });\n                playlist.segments[0].discontinuity = true;\n                playlist.discontinuityStarts.unshift(0); // No matching segment does not necessarily mean there's missing content.\n                //\n                // If the new playlist's timeline is the same as the last seen segment's timeline,\n                // then a discontinuity can be added to identify that there's potentially missing\n                // content. If there's no missing content, the discontinuity should still be rather\n                // harmless. It's possible that if segment durations are accurate enough, that the\n                // existence of a gap can be determined using the presentation times and durations,\n                // but if the segment timing info is off, it may introduce more problems than simply\n                // adding the discontinuity.\n                //\n                // If the new playlist's timeline is different from the last seen segment's timeline,\n                // then a discontinuity can be added to identify that this is the first seen segment\n                // of a new timeline. However, the logic at the start of this function that\n                // determined the disconinuity sequence by timeline index is now off by one (the\n                // discontinuity of the newest timeline hasn't yet fallen off the manifest...since\n                // we added it), so the disconinuity sequence must be decremented.\n                //\n                // A period may also have a duration of zero, so the case of no segments is handled\n                // here even though we don't yet support early available periods.\n\n                if (!oldPlaylist.segments.length && playlist.timeline > oldPlaylist.timeline || oldPlaylist.segments.length && playlist.timeline > oldPlaylist.segments[oldPlaylist.segments.length - 1].timeline) {\n                    playlist.discontinuitySequence--;\n                }\n                return;\n            } // If the first segment matched with a prior segment on a discontinuity (it's matching\n            // on the first segment of a period), then the discontinuitySequence shouldn't be the\n            // timeline's matching one, but instead should be the one prior, and the first segment\n            // of the new manifest should be marked with a discontinuity.\n            //\n            // The reason for this special case is that discontinuity sequence shows how many\n            // discontinuities have fallen off of the playlist, and discontinuities are marked on\n            // the first segment of a new \"timeline.\" Because of this, while DASH will retain that\n            // Period while the \"timeline\" exists, HLS keeps track of it via the discontinuity\n            // sequence, and that first segment is an indicator, but can be removed before that\n            // timeline is gone.\n\n            const oldMatchingSegment = oldPlaylist.segments[oldMatchingSegmentIndex];\n            if (oldMatchingSegment.discontinuity && !firstNewSegment.discontinuity) {\n                firstNewSegment.discontinuity = true;\n                playlist.discontinuityStarts.unshift(0);\n                playlist.discontinuitySequence--;\n            }\n            updateMediaSequenceForPlaylist({\n                playlist,\n                mediaSequence: oldPlaylist.segments[oldMatchingSegmentIndex].number\n            });\n        });\n    };\n    /**\n     * Given an old parsed manifest object and a new parsed manifest object, updates the\n     * sequence and timing values within the new manifest to ensure that it lines up with the\n     * old.\n     *\n     * @param {Array} oldManifest - the old main manifest object\n     * @param {Array} newManifest - the new main manifest object\n     *\n     * @return {Object} the updated new manifest object\n     */\n\n    const positionManifestOnTimeline = ({\n                                            oldManifest,\n                                            newManifest\n                                        }) => {\n        // Starting from v4.1.2 of the IOP, section 4.4.3.3 states:\n        //\n        // \"MPD@availabilityStartTime and Period@start shall not be changed over MPD updates.\"\n        //\n        // This was added from https://github.com/Dash-Industry-Forum/DASH-IF-IOP/issues/160\n        //\n        // Because of this change, and the difficulty of supporting periods with changing start\n        // times, periods with changing start times are not supported. This makes the logic much\n        // simpler, since periods with the same start time can be considerred the same period\n        // across refreshes.\n        //\n        // To give an example as to the difficulty of handling periods where the start time may\n        // change, if a single period manifest is refreshed with another manifest with a single\n        // period, and both the start and end times are increased, then the only way to determine\n        // if it's a new period or an old one that has changed is to look through the segments of\n        // each playlist and determine the presentation time bounds to find a match. In addition,\n        // if the period start changed to exceed the old period end, then there would be no\n        // match, and it would not be possible to determine whether the refreshed period is a new\n        // one or the old one.\n        const oldPlaylists = oldManifest.playlists.concat(getMediaGroupPlaylists(oldManifest));\n        const newPlaylists = newManifest.playlists.concat(getMediaGroupPlaylists(newManifest)); // Save all seen timelineStarts to the new manifest. Although this potentially means that\n        // there's a \"memory leak\" in that it will never stop growing, in reality, only a couple\n        // of properties are saved for each seen Period. Even long running live streams won't\n        // generate too many Periods, unless the stream is watched for decades. In the future,\n        // this can be optimized by mapping to discontinuity sequence numbers for each timeline,\n        // but it may not become an issue, and the additional info can be useful for debugging.\n\n        newManifest.timelineStarts = getUniqueTimelineStarts([oldManifest.timelineStarts, newManifest.timelineStarts]);\n        updateSequenceNumbers({\n            oldPlaylists,\n            newPlaylists,\n            timelineStarts: newManifest.timelineStarts\n        });\n        return newManifest;\n    };\n    const generateSidxKey = sidx => sidx && sidx.uri + '-' + byteRangeToString(sidx.byterange);\n    const mergeDiscontiguousPlaylists = playlists => {\n        const mergedPlaylists = values(playlists.reduce((acc, playlist) => {\n            // assuming playlist IDs are the same across periods\n            // TODO: handle multiperiod where representation sets are not the same\n            // across periods\n            const name = playlist.attributes.id + (playlist.attributes.lang || '');\n            if (!acc[name]) {\n                // First Period\n                acc[name] = playlist;\n                acc[name].attributes.timelineStarts = [];\n            } else {\n                // Subsequent Periods\n                if (playlist.segments) {\n                    // first segment of subsequent periods signal a discontinuity\n                    if (playlist.segments[0]) {\n                        playlist.segments[0].discontinuity = true;\n                    }\n                    acc[name].segments.push(...playlist.segments);\n                } // bubble up contentProtection, this assumes all DRM content\n                // has the same contentProtection\n\n                if (playlist.attributes.contentProtection) {\n                    acc[name].attributes.contentProtection = playlist.attributes.contentProtection;\n                }\n            }\n            acc[name].attributes.timelineStarts.push({\n                // Although they represent the same number, it's important to have both to make it\n                // compatible with HLS potentially having a similar attribute.\n                start: playlist.attributes.periodStart,\n                timeline: playlist.attributes.periodStart\n            });\n            return acc;\n        }, {}));\n        return mergedPlaylists.map(playlist => {\n            playlist.discontinuityStarts = findIndexes(playlist.segments || [], 'discontinuity');\n            return playlist;\n        });\n    };\n    const addSidxSegmentsToPlaylist = (playlist, sidxMapping) => {\n        const sidxKey = generateSidxKey(playlist.sidx);\n        const sidxMatch = sidxKey && sidxMapping[sidxKey] && sidxMapping[sidxKey].sidx;\n        if (sidxMatch) {\n            addSidxSegmentsToPlaylist$1(playlist, sidxMatch, playlist.sidx.resolvedUri);\n        }\n        return playlist;\n    };\n    const addSidxSegmentsToPlaylists = (playlists, sidxMapping = {}) => {\n        if (!Object.keys(sidxMapping).length) {\n            return playlists;\n        }\n        for (const i in playlists) {\n            playlists[i] = addSidxSegmentsToPlaylist(playlists[i], sidxMapping);\n        }\n        return playlists;\n    };\n    const formatAudioPlaylist = ({\n                                     attributes,\n                                     segments,\n                                     sidx,\n                                     mediaSequence,\n                                     discontinuitySequence,\n                                     discontinuityStarts\n                                 }, isAudioOnly) => {\n        const playlist = {\n            attributes: {\n                NAME: attributes.id,\n                BANDWIDTH: attributes.bandwidth,\n                CODECS: attributes.codecs,\n                ['PROGRAM-ID']: 1\n            },\n            uri: '',\n            endList: attributes.type === 'static',\n            timeline: attributes.periodStart,\n            resolvedUri: '',\n            targetDuration: attributes.duration,\n            discontinuitySequence,\n            discontinuityStarts,\n            timelineStarts: attributes.timelineStarts,\n            mediaSequence,\n            segments\n        };\n        if (attributes.contentProtection) {\n            playlist.contentProtection = attributes.contentProtection;\n        }\n        if (sidx) {\n            playlist.sidx = sidx;\n        }\n        if (isAudioOnly) {\n            playlist.attributes.AUDIO = 'audio';\n            playlist.attributes.SUBTITLES = 'subs';\n        }\n        return playlist;\n    };\n    const formatVttPlaylist = ({\n                                   attributes,\n                                   segments,\n                                   mediaSequence,\n                                   discontinuityStarts,\n                                   discontinuitySequence\n                               }) => {\n        if (typeof segments === 'undefined') {\n            // vtt tracks may use single file in BaseURL\n            segments = [{\n                uri: attributes.baseUrl,\n                timeline: attributes.periodStart,\n                resolvedUri: attributes.baseUrl || '',\n                duration: attributes.sourceDuration,\n                number: 0\n            }]; // targetDuration should be the same duration as the only segment\n\n            attributes.duration = attributes.sourceDuration;\n        }\n        const m3u8Attributes = {\n            NAME: attributes.id,\n            BANDWIDTH: attributes.bandwidth,\n            ['PROGRAM-ID']: 1\n        };\n        if (attributes.codecs) {\n            m3u8Attributes.CODECS = attributes.codecs;\n        }\n        return {\n            attributes: m3u8Attributes,\n            uri: '',\n            endList: attributes.type === 'static',\n            timeline: attributes.periodStart,\n            resolvedUri: attributes.baseUrl || '',\n            targetDuration: attributes.duration,\n            timelineStarts: attributes.timelineStarts,\n            discontinuityStarts,\n            discontinuitySequence,\n            mediaSequence,\n            segments\n        };\n    };\n    const organizeAudioPlaylists = (playlists, sidxMapping = {}, isAudioOnly = false) => {\n        let mainPlaylist;\n        const formattedPlaylists = playlists.reduce((a, playlist) => {\n            const role = playlist.attributes.role && playlist.attributes.role.value || '';\n            const language = playlist.attributes.lang || '';\n            let label = playlist.attributes.label || 'main';\n            if (language && !playlist.attributes.label) {\n                const roleLabel = role ? ` (${role})` : '';\n                label = `${playlist.attributes.lang}${roleLabel}`;\n            }\n            if (!a[label]) {\n                a[label] = {\n                    language,\n                    autoselect: true,\n                    default: role === 'main',\n                    playlists: [],\n                    uri: ''\n                };\n            }\n            const formatted = addSidxSegmentsToPlaylist(formatAudioPlaylist(playlist, isAudioOnly), sidxMapping);\n            a[label].playlists.push(formatted);\n            if (typeof mainPlaylist === 'undefined' && role === 'main') {\n                mainPlaylist = playlist;\n                mainPlaylist.default = true;\n            }\n            return a;\n        }, {}); // if no playlists have role \"main\", mark the first as main\n\n        if (!mainPlaylist) {\n            const firstLabel = Object.keys(formattedPlaylists)[0];\n            formattedPlaylists[firstLabel].default = true;\n        }\n        return formattedPlaylists;\n    };\n    const organizeVttPlaylists = (playlists, sidxMapping = {}) => {\n        return playlists.reduce((a, playlist) => {\n            const label = playlist.attributes.lang || 'text';\n            if (!a[label]) {\n                a[label] = {\n                    language: label,\n                    default: false,\n                    autoselect: false,\n                    playlists: [],\n                    uri: ''\n                };\n            }\n            a[label].playlists.push(addSidxSegmentsToPlaylist(formatVttPlaylist(playlist), sidxMapping));\n            return a;\n        }, {});\n    };\n    const organizeCaptionServices = captionServices => captionServices.reduce((svcObj, svc) => {\n        if (!svc) {\n            return svcObj;\n        }\n        svc.forEach(service => {\n            const {\n                channel,\n                language\n            } = service;\n            svcObj[language] = {\n                autoselect: false,\n                default: false,\n                instreamId: channel,\n                language\n            };\n            if (service.hasOwnProperty('aspectRatio')) {\n                svcObj[language].aspectRatio = service.aspectRatio;\n            }\n            if (service.hasOwnProperty('easyReader')) {\n                svcObj[language].easyReader = service.easyReader;\n            }\n            if (service.hasOwnProperty('3D')) {\n                svcObj[language]['3D'] = service['3D'];\n            }\n        });\n        return svcObj;\n    }, {});\n    const formatVideoPlaylist = ({\n                                     attributes,\n                                     segments,\n                                     sidx,\n                                     discontinuityStarts\n                                 }) => {\n        const playlist = {\n            attributes: {\n                NAME: attributes.id,\n                AUDIO: 'audio',\n                SUBTITLES: 'subs',\n                RESOLUTION: {\n                    width: attributes.width,\n                    height: attributes.height\n                },\n                CODECS: attributes.codecs,\n                BANDWIDTH: attributes.bandwidth,\n                ['PROGRAM-ID']: 1\n            },\n            uri: '',\n            endList: attributes.type === 'static',\n            timeline: attributes.periodStart,\n            resolvedUri: '',\n            targetDuration: attributes.duration,\n            discontinuityStarts,\n            timelineStarts: attributes.timelineStarts,\n            segments\n        };\n        if (attributes.frameRate) {\n            playlist.attributes['FRAME-RATE'] = attributes.frameRate;\n        }\n        if (attributes.contentProtection) {\n            playlist.contentProtection = attributes.contentProtection;\n        }\n        if (sidx) {\n            playlist.sidx = sidx;\n        }\n        return playlist;\n    };\n    const videoOnly = ({\n                           attributes\n                       }) => attributes.mimeType === 'video/mp4' || attributes.mimeType === 'video/webm' || attributes.contentType === 'video';\n    const audioOnly = ({\n                           attributes\n                       }) => attributes.mimeType === 'audio/mp4' || attributes.mimeType === 'audio/webm' || attributes.contentType === 'audio';\n    const vttOnly = ({\n                         attributes\n                     }) => attributes.mimeType === 'text/vtt' || attributes.contentType === 'text';\n    /**\n     * Contains start and timeline properties denoting a timeline start. For DASH, these will\n     * be the same number.\n     *\n     * @typedef {Object} TimelineStart\n     * @property {number} start - the start time of the timeline\n     * @property {number} timeline - the timeline number\n     */\n\n    /**\n     * Adds appropriate media and discontinuity sequence values to the segments and playlists.\n     *\n     * Throughout mpd-parser, the `number` attribute is used in relation to `startNumber`, a\n     * DASH specific attribute used in constructing segment URI's from templates. However, from\n     * an HLS perspective, the `number` attribute on a segment would be its `mediaSequence`\n     * value, which should start at the original media sequence value (or 0) and increment by 1\n     * for each segment thereafter. Since DASH's `startNumber` values are independent per\n     * period, it doesn't make sense to use it for `number`. Instead, assume everything starts\n     * from a 0 mediaSequence value and increment from there.\n     *\n     * Note that VHS currently doesn't use the `number` property, but it can be helpful for\n     * debugging and making sense of the manifest.\n     *\n     * For live playlists, to account for values increasing in manifests when periods are\n     * removed on refreshes, merging logic should be used to update the numbers to their\n     * appropriate values (to ensure they're sequential and increasing).\n     *\n     * @param {Object[]} playlists - the playlists to update\n     * @param {TimelineStart[]} timelineStarts - the timeline starts for the manifest\n     */\n\n    const addMediaSequenceValues = (playlists, timelineStarts) => {\n        // increment all segments sequentially\n        playlists.forEach(playlist => {\n            playlist.mediaSequence = 0;\n            playlist.discontinuitySequence = timelineStarts.findIndex(function ({\n                                                                                    timeline\n                                                                                }) {\n                return timeline === playlist.timeline;\n            });\n            if (!playlist.segments) {\n                return;\n            }\n            playlist.segments.forEach((segment, index) => {\n                segment.number = index;\n            });\n        });\n    };\n    /**\n     * Given a media group object, flattens all playlists within the media group into a single\n     * array.\n     *\n     * @param {Object} mediaGroupObject - the media group object\n     *\n     * @return {Object[]}\n     *         The media group playlists\n     */\n\n    const flattenMediaGroupPlaylists = mediaGroupObject => {\n        if (!mediaGroupObject) {\n            return [];\n        }\n        return Object.keys(mediaGroupObject).reduce((acc, label) => {\n            const labelContents = mediaGroupObject[label];\n            return acc.concat(labelContents.playlists);\n        }, []);\n    };\n    const toM3u8 = ({\n                        dashPlaylists,\n                        locations,\n                        sidxMapping = {},\n                        previousManifest\n                    }) => {\n        if (!dashPlaylists.length) {\n            return {};\n        } // grab all main manifest attributes\n\n        const {\n            sourceDuration: duration,\n            type,\n            suggestedPresentationDelay,\n            minimumUpdatePeriod\n        } = dashPlaylists[0].attributes;\n        const videoPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(videoOnly)).map(formatVideoPlaylist);\n        const audioPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(audioOnly));\n        const vttPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(vttOnly));\n        const captions = dashPlaylists.map(playlist => playlist.attributes.captionServices).filter(Boolean);\n        const manifest = {\n            allowCache: true,\n            discontinuityStarts: [],\n            segments: [],\n            endList: true,\n            mediaGroups: {\n                AUDIO: {},\n                VIDEO: {},\n                ['CLOSED-CAPTIONS']: {},\n                SUBTITLES: {}\n            },\n            uri: '',\n            duration,\n            playlists: addSidxSegmentsToPlaylists(videoPlaylists, sidxMapping)\n        };\n        if (minimumUpdatePeriod >= 0) {\n            manifest.minimumUpdatePeriod = minimumUpdatePeriod * 1000;\n        }\n        if (locations) {\n            manifest.locations = locations;\n        }\n        if (type === 'dynamic') {\n            manifest.suggestedPresentationDelay = suggestedPresentationDelay;\n        }\n        const isAudioOnly = manifest.playlists.length === 0;\n        const organizedAudioGroup = audioPlaylists.length ? organizeAudioPlaylists(audioPlaylists, sidxMapping, isAudioOnly) : null;\n        const organizedVttGroup = vttPlaylists.length ? organizeVttPlaylists(vttPlaylists, sidxMapping) : null;\n        const formattedPlaylists = videoPlaylists.concat(flattenMediaGroupPlaylists(organizedAudioGroup), flattenMediaGroupPlaylists(organizedVttGroup));\n        const playlistTimelineStarts = formattedPlaylists.map(({\n                                                                   timelineStarts\n                                                               }) => timelineStarts);\n        manifest.timelineStarts = getUniqueTimelineStarts(playlistTimelineStarts);\n        addMediaSequenceValues(formattedPlaylists, manifest.timelineStarts);\n        if (organizedAudioGroup) {\n            manifest.mediaGroups.AUDIO.audio = organizedAudioGroup;\n        }\n        if (organizedVttGroup) {\n            manifest.mediaGroups.SUBTITLES.subs = organizedVttGroup;\n        }\n        if (captions.length) {\n            manifest.mediaGroups['CLOSED-CAPTIONS'].cc = organizeCaptionServices(captions);\n        }\n        if (previousManifest) {\n            return positionManifestOnTimeline({\n                oldManifest: previousManifest,\n                newManifest: manifest\n            });\n        }\n        return manifest;\n    };\n\n    /**\n     * Calculates the R (repetition) value for a live stream (for the final segment\n     * in a manifest where the r value is negative 1)\n     *\n     * @param {Object} attributes\n     *        Object containing all inherited attributes from parent elements with attribute\n     *        names as keys\n     * @param {number} time\n     *        current time (typically the total time up until the final segment)\n     * @param {number} duration\n     *        duration property for the given <S />\n     *\n     * @return {number}\n     *        R value to reach the end of the given period\n     */\n    const getLiveRValue = (attributes, time, duration) => {\n        const {\n            NOW,\n            clientOffset,\n            availabilityStartTime,\n            timescale = 1,\n            periodStart = 0,\n            minimumUpdatePeriod = 0\n        } = attributes;\n        const now = (NOW + clientOffset) / 1000;\n        const periodStartWC = availabilityStartTime + periodStart;\n        const periodEndWC = now + minimumUpdatePeriod;\n        const periodDuration = periodEndWC - periodStartWC;\n        return Math.ceil((periodDuration * timescale - time) / duration);\n    };\n    /**\n     * Uses information provided by SegmentTemplate.SegmentTimeline to determine segment\n     * timing and duration\n     *\n     * @param {Object} attributes\n     *        Object containing all inherited attributes from parent elements with attribute\n     *        names as keys\n     * @param {Object[]} segmentTimeline\n     *        List of objects representing the attributes of each S element contained within\n     *\n     * @return {{number: number, duration: number, time: number, timeline: number}[]}\n     *         List of Objects with segment timing and duration info\n     */\n\n    const parseByTimeline = (attributes, segmentTimeline) => {\n        const {\n            type,\n            minimumUpdatePeriod = 0,\n            media = '',\n            sourceDuration,\n            timescale = 1,\n            startNumber = 1,\n            periodStart: timeline\n        } = attributes;\n        const segments = [];\n        let time = -1;\n        for (let sIndex = 0; sIndex < segmentTimeline.length; sIndex++) {\n            const S = segmentTimeline[sIndex];\n            const duration = S.d;\n            const repeat = S.r || 0;\n            const segmentTime = S.t || 0;\n            if (time < 0) {\n                // first segment\n                time = segmentTime;\n            }\n            if (segmentTime && segmentTime > time) {\n                // discontinuity\n                // TODO: How to handle this type of discontinuity\n                // timeline++ here would treat it like HLS discontuity and content would\n                // get appended without gap\n                // E.G.\n                //  <S t=\"0\" d=\"1\" />\n                //  <S d=\"1\" />\n                //  <S d=\"1\" />\n                //  <S t=\"5\" d=\"1\" />\n                // would have $Time$ values of [0, 1, 2, 5]\n                // should this be appened at time positions [0, 1, 2, 3],(#EXT-X-DISCONTINUITY)\n                // or [0, 1, 2, gap, gap, 5]? (#EXT-X-GAP)\n                // does the value of sourceDuration consider this when calculating arbitrary\n                // negative @r repeat value?\n                // E.G. Same elements as above with this added at the end\n                //  <S d=\"1\" r=\"-1\" />\n                //  with a sourceDuration of 10\n                // Would the 2 gaps be included in the time duration calculations resulting in\n                // 8 segments with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9] or 10 segments\n                // with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9, 10, 11] ?\n                time = segmentTime;\n            }\n            let count;\n            if (repeat < 0) {\n                const nextS = sIndex + 1;\n                if (nextS === segmentTimeline.length) {\n                    // last segment\n                    if (type === 'dynamic' && minimumUpdatePeriod > 0 && media.indexOf('$Number$') > 0) {\n                        count = getLiveRValue(attributes, time, duration);\n                    } else {\n                        // TODO: This may be incorrect depending on conclusion of TODO above\n                        count = (sourceDuration * timescale - time) / duration;\n                    }\n                } else {\n                    count = (segmentTimeline[nextS].t - time) / duration;\n                }\n            } else {\n                count = repeat + 1;\n            }\n            const end = startNumber + segments.length + count;\n            let number = startNumber + segments.length;\n            while (number < end) {\n                segments.push({\n                    number,\n                    duration: duration / timescale,\n                    time,\n                    timeline\n                });\n                time += duration;\n                number++;\n            }\n        }\n        return segments;\n    };\n    const identifierPattern = /\\$([A-z]*)(?:(%0)([0-9]+)d)?\\$/g;\n    /**\n     * Replaces template identifiers with corresponding values. To be used as the callback\n     * for String.prototype.replace\n     *\n     * @name replaceCallback\n     * @function\n     * @param {string} match\n     *        Entire match of identifier\n     * @param {string} identifier\n     *        Name of matched identifier\n     * @param {string} format\n     *        Format tag string. Its presence indicates that padding is expected\n     * @param {string} width\n     *        Desired length of the replaced value. Values less than this width shall be left\n     *        zero padded\n     * @return {string}\n     *         Replacement for the matched identifier\n     */\n\n    /**\n     * Returns a function to be used as a callback for String.prototype.replace to replace\n     * template identifiers\n     *\n     * @param {Obect} values\n     *        Object containing values that shall be used to replace known identifiers\n     * @param {number} values.RepresentationID\n     *        Value of the Representation@id attribute\n     * @param {number} values.Number\n     *        Number of the corresponding segment\n     * @param {number} values.Bandwidth\n     *        Value of the Representation@bandwidth attribute.\n     * @param {number} values.Time\n     *        Timestamp value of the corresponding segment\n     * @return {replaceCallback}\n     *         Callback to be used with String.prototype.replace to replace identifiers\n     */\n\n    const identifierReplacement = values => (match, identifier, format, width) => {\n        if (match === '$$') {\n            // escape sequence\n            return '$';\n        }\n        if (typeof values[identifier] === 'undefined') {\n            return match;\n        }\n        const value = '' + values[identifier];\n        if (identifier === 'RepresentationID') {\n            // Format tag shall not be present with RepresentationID\n            return value;\n        }\n        if (!format) {\n            width = 1;\n        } else {\n            width = parseInt(width, 10);\n        }\n        if (value.length >= width) {\n            return value;\n        }\n        return `${new Array(width - value.length + 1).join('0')}${value}`;\n    };\n    /**\n     * Constructs a segment url from a template string\n     *\n     * @param {string} url\n     *        Template string to construct url from\n     * @param {Obect} values\n     *        Object containing values that shall be used to replace known identifiers\n     * @param {number} values.RepresentationID\n     *        Value of the Representation@id attribute\n     * @param {number} values.Number\n     *        Number of the corresponding segment\n     * @param {number} values.Bandwidth\n     *        Value of the Representation@bandwidth attribute.\n     * @param {number} values.Time\n     *        Timestamp value of the corresponding segment\n     * @return {string}\n     *         Segment url with identifiers replaced\n     */\n\n    const constructTemplateUrl = (url, values) => url.replace(identifierPattern, identifierReplacement(values));\n    /**\n     * Generates a list of objects containing timing and duration information about each\n     * segment needed to generate segment uris and the complete segment object\n     *\n     * @param {Object} attributes\n     *        Object containing all inherited attributes from parent elements with attribute\n     *        names as keys\n     * @param {Object[]|undefined} segmentTimeline\n     *        List of objects representing the attributes of each S element contained within\n     *        the SegmentTimeline element\n     * @return {{number: number, duration: number, time: number, timeline: number}[]}\n     *         List of Objects with segment timing and duration info\n     */\n\n    const parseTemplateInfo = (attributes, segmentTimeline) => {\n        if (!attributes.duration && !segmentTimeline) {\n            // if neither @duration or SegmentTimeline are present, then there shall be exactly\n            // one media segment\n            return [{\n                number: attributes.startNumber || 1,\n                duration: attributes.sourceDuration,\n                time: 0,\n                timeline: attributes.periodStart\n            }];\n        }\n        if (attributes.duration) {\n            return parseByDuration(attributes);\n        }\n        return parseByTimeline(attributes, segmentTimeline);\n    };\n    /**\n     * Generates a list of segments using information provided by the SegmentTemplate element\n     *\n     * @param {Object} attributes\n     *        Object containing all inherited attributes from parent elements with attribute\n     *        names as keys\n     * @param {Object[]|undefined} segmentTimeline\n     *        List of objects representing the attributes of each S element contained within\n     *        the SegmentTimeline element\n     * @return {Object[]}\n     *         List of segment objects\n     */\n\n    const segmentsFromTemplate = (attributes, segmentTimeline) => {\n        const templateValues = {\n            RepresentationID: attributes.id,\n            Bandwidth: attributes.bandwidth || 0\n        };\n        const {\n            initialization = {\n                sourceURL: '',\n                range: ''\n            }\n        } = attributes;\n        const mapSegment = urlTypeToSegment({\n            baseUrl: attributes.baseUrl,\n            source: constructTemplateUrl(initialization.sourceURL, templateValues),\n            range: initialization.range\n        });\n        const segments = parseTemplateInfo(attributes, segmentTimeline);\n        return segments.map(segment => {\n            templateValues.Number = segment.number;\n            templateValues.Time = segment.time;\n            const uri = constructTemplateUrl(attributes.media || '', templateValues); // See DASH spec section 5.3.9.2.2\n            // - if timescale isn't present on any level, default to 1.\n\n            const timescale = attributes.timescale || 1; // - if presentationTimeOffset isn't present on any level, default to 0\n\n            const presentationTimeOffset = attributes.presentationTimeOffset || 0;\n            const presentationTime =\n                // Even if the @t attribute is not specified for the segment, segment.time is\n                // calculated in mpd-parser prior to this, so it's assumed to be available.\n                attributes.periodStart + (segment.time - presentationTimeOffset) / timescale;\n            const map = {\n                uri,\n                timeline: segment.timeline,\n                duration: segment.duration,\n                resolvedUri: resolveUrl$1(attributes.baseUrl || '', uri),\n                map: mapSegment,\n                number: segment.number,\n                presentationTime\n            };\n            return map;\n        });\n    };\n\n    /**\n     * Converts a <SegmentUrl> (of type URLType from the DASH spec 5.3.9.2 Table 14)\n     * to an object that matches the output of a segment in videojs/mpd-parser\n     *\n     * @param {Object} attributes\n     *   Object containing all inherited attributes from parent elements with attribute\n     *   names as keys\n     * @param {Object} segmentUrl\n     *   <SegmentURL> node to translate into a segment object\n     * @return {Object} translated segment object\n     */\n\n    const SegmentURLToSegmentObject = (attributes, segmentUrl) => {\n        const {\n            baseUrl,\n            initialization = {}\n        } = attributes;\n        const initSegment = urlTypeToSegment({\n            baseUrl,\n            source: initialization.sourceURL,\n            range: initialization.range\n        });\n        const segment = urlTypeToSegment({\n            baseUrl,\n            source: segmentUrl.media,\n            range: segmentUrl.mediaRange\n        });\n        segment.map = initSegment;\n        return segment;\n    };\n    /**\n     * Generates a list of segments using information provided by the SegmentList element\n     * SegmentList (DASH SPEC Section 5.3.9.3.2) contains a set of <SegmentURL> nodes.  Each\n     * node should be translated into segment.\n     *\n     * @param {Object} attributes\n     *   Object containing all inherited attributes from parent elements with attribute\n     *   names as keys\n     * @param {Object[]|undefined} segmentTimeline\n     *        List of objects representing the attributes of each S element contained within\n     *        the SegmentTimeline element\n     * @return {Object.<Array>} list of segments\n     */\n\n    const segmentsFromList = (attributes, segmentTimeline) => {\n        const {\n            duration,\n            segmentUrls = [],\n            periodStart\n        } = attributes; // Per spec (5.3.9.2.1) no way to determine segment duration OR\n        // if both SegmentTimeline and @duration are defined, it is outside of spec.\n\n        if (!duration && !segmentTimeline || duration && segmentTimeline) {\n            throw new Error(errors.SEGMENT_TIME_UNSPECIFIED);\n        }\n        const segmentUrlMap = segmentUrls.map(segmentUrlObject => SegmentURLToSegmentObject(attributes, segmentUrlObject));\n        let segmentTimeInfo;\n        if (duration) {\n            segmentTimeInfo = parseByDuration(attributes);\n        }\n        if (segmentTimeline) {\n            segmentTimeInfo = parseByTimeline(attributes, segmentTimeline);\n        }\n        const segments = segmentTimeInfo.map((segmentTime, index) => {\n            if (segmentUrlMap[index]) {\n                const segment = segmentUrlMap[index]; // See DASH spec section 5.3.9.2.2\n                // - if timescale isn't present on any level, default to 1.\n\n                const timescale = attributes.timescale || 1; // - if presentationTimeOffset isn't present on any level, default to 0\n\n                const presentationTimeOffset = attributes.presentationTimeOffset || 0;\n                segment.timeline = segmentTime.timeline;\n                segment.duration = segmentTime.duration;\n                segment.number = segmentTime.number;\n                segment.presentationTime = periodStart + (segmentTime.time - presentationTimeOffset) / timescale;\n                return segment;\n            } // Since we're mapping we should get rid of any blank segments (in case\n            // the given SegmentTimeline is handling for more elements than we have\n            // SegmentURLs for).\n        }).filter(segment => segment);\n        return segments;\n    };\n    const generateSegments = ({\n                                  attributes,\n                                  segmentInfo\n                              }) => {\n        let segmentAttributes;\n        let segmentsFn;\n        if (segmentInfo.template) {\n            segmentsFn = segmentsFromTemplate;\n            segmentAttributes = merge$1(attributes, segmentInfo.template);\n        } else if (segmentInfo.base) {\n            segmentsFn = segmentsFromBase;\n            segmentAttributes = merge$1(attributes, segmentInfo.base);\n        } else if (segmentInfo.list) {\n            segmentsFn = segmentsFromList;\n            segmentAttributes = merge$1(attributes, segmentInfo.list);\n        }\n        const segmentsInfo = {\n            attributes\n        };\n        if (!segmentsFn) {\n            return segmentsInfo;\n        }\n        const segments = segmentsFn(segmentAttributes, segmentInfo.segmentTimeline); // The @duration attribute will be used to determin the playlist's targetDuration which\n        // must be in seconds. Since we've generated the segment list, we no longer need\n        // @duration to be in @timescale units, so we can convert it here.\n\n        if (segmentAttributes.duration) {\n            const {\n                duration,\n                timescale = 1\n            } = segmentAttributes;\n            segmentAttributes.duration = duration / timescale;\n        } else if (segments.length) {\n            // if there is no @duration attribute, use the largest segment duration as\n            // as target duration\n            segmentAttributes.duration = segments.reduce((max, segment) => {\n                return Math.max(max, Math.ceil(segment.duration));\n            }, 0);\n        } else {\n            segmentAttributes.duration = 0;\n        }\n        segmentsInfo.attributes = segmentAttributes;\n        segmentsInfo.segments = segments; // This is a sidx box without actual segment information\n\n        if (segmentInfo.base && segmentAttributes.indexRange) {\n            segmentsInfo.sidx = segments[0];\n            segmentsInfo.segments = [];\n        }\n        return segmentsInfo;\n    };\n    const toPlaylists = representations => representations.map(generateSegments);\n    const findChildren = (element, name) => from(element.childNodes).filter(({\n                                                                                 tagName\n                                                                             }) => tagName === name);\n    const getContent = element => element.textContent.trim();\n\n    /**\n     * Converts the provided string that may contain a division operation to a number.\n     *\n     * @param {string} value - the provided string value\n     *\n     * @return {number} the parsed string value\n     */\n    const parseDivisionValue = value => {\n        return parseFloat(value.split('/').reduce((prev, current) => prev / current));\n    };\n    const parseDuration = str => {\n        const SECONDS_IN_YEAR = 365 * 24 * 60 * 60;\n        const SECONDS_IN_MONTH = 30 * 24 * 60 * 60;\n        const SECONDS_IN_DAY = 24 * 60 * 60;\n        const SECONDS_IN_HOUR = 60 * 60;\n        const SECONDS_IN_MIN = 60; // P10Y10M10DT10H10M10.1S\n\n        const durationRegex = /P(?:(\\d*)Y)?(?:(\\d*)M)?(?:(\\d*)D)?(?:T(?:(\\d*)H)?(?:(\\d*)M)?(?:([\\d.]*)S)?)?/;\n        const match = durationRegex.exec(str);\n        if (!match) {\n            return 0;\n        }\n        const [year, month, day, hour, minute, second] = match.slice(1);\n        return parseFloat(year || 0) * SECONDS_IN_YEAR + parseFloat(month || 0) * SECONDS_IN_MONTH + parseFloat(day || 0) * SECONDS_IN_DAY + parseFloat(hour || 0) * SECONDS_IN_HOUR + parseFloat(minute || 0) * SECONDS_IN_MIN + parseFloat(second || 0);\n    };\n    const parseDate = str => {\n        // Date format without timezone according to ISO 8601\n        // YYY-MM-DDThh:mm:ss.ssssss\n        const dateRegex = /^\\d+-\\d+-\\d+T\\d+:\\d+:\\d+(\\.\\d+)?$/; // If the date string does not specifiy a timezone, we must specifiy UTC. This is\n        // expressed by ending with 'Z'\n\n        if (dateRegex.test(str)) {\n            str += 'Z';\n        }\n        return Date.parse(str);\n    };\n    const parsers = {\n        /**\n         * Specifies the duration of the entire Media Presentation. Format is a duration string\n         * as specified in ISO 8601\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The duration in seconds\n         */\n        mediaPresentationDuration(value) {\n            return parseDuration(value);\n        },\n        /**\n         * Specifies the Segment availability start time for all Segments referred to in this\n         * MPD. For a dynamic manifest, it specifies the anchor for the earliest availability\n         * time. Format is a date string as specified in ISO 8601\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The date as seconds from unix epoch\n         */\n        availabilityStartTime(value) {\n            return parseDate(value) / 1000;\n        },\n        /**\n         * Specifies the smallest period between potential changes to the MPD. Format is a\n         * duration string as specified in ISO 8601\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The duration in seconds\n         */\n        minimumUpdatePeriod(value) {\n            return parseDuration(value);\n        },\n        /**\n         * Specifies the suggested presentation delay. Format is a\n         * duration string as specified in ISO 8601\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The duration in seconds\n         */\n        suggestedPresentationDelay(value) {\n            return parseDuration(value);\n        },\n        /**\n         * specifices the type of mpd. Can be either \"static\" or \"dynamic\"\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         *\n         * @return {string}\n         *         The type as a string\n         */\n        type(value) {\n            return value;\n        },\n        /**\n         * Specifies the duration of the smallest time shifting buffer for any Representation\n         * in the MPD. Format is a duration string as specified in ISO 8601\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The duration in seconds\n         */\n        timeShiftBufferDepth(value) {\n            return parseDuration(value);\n        },\n        /**\n         * Specifies the PeriodStart time of the Period relative to the availabilityStarttime.\n         * Format is a duration string as specified in ISO 8601\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The duration in seconds\n         */\n        start(value) {\n            return parseDuration(value);\n        },\n        /**\n         * Specifies the width of the visual presentation\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed width\n         */\n        width(value) {\n            return parseInt(value, 10);\n        },\n        /**\n         * Specifies the height of the visual presentation\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed height\n         */\n        height(value) {\n            return parseInt(value, 10);\n        },\n        /**\n         * Specifies the bitrate of the representation\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed bandwidth\n         */\n        bandwidth(value) {\n            return parseInt(value, 10);\n        },\n        /**\n         * Specifies the frame rate of the representation\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed frame rate\n         */\n        frameRate(value) {\n            return parseDivisionValue(value);\n        },\n        /**\n         * Specifies the number of the first Media Segment in this Representation in the Period\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed number\n         */\n        startNumber(value) {\n            return parseInt(value, 10);\n        },\n        /**\n         * Specifies the timescale in units per seconds\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed timescale\n         */\n        timescale(value) {\n            return parseInt(value, 10);\n        },\n        /**\n         * Specifies the presentationTimeOffset.\n         *\n         * @param {string} value\n         *        value of the attribute as a string\n         *\n         * @return {number}\n         *         The parsed presentationTimeOffset\n         */\n        presentationTimeOffset(value) {\n            return parseInt(value, 10);\n        },\n        /**\n         * Specifies the constant approximate Segment duration\n         * NOTE: The <Period> element also contains an @duration attribute. This duration\n         *       specifies the duration of the Period. This attribute is currently not\n         *       supported by the rest of the parser, however we still check for it to prevent\n         *       errors.\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed duration\n         */\n        duration(value) {\n            const parsedValue = parseInt(value, 10);\n            if (isNaN(parsedValue)) {\n                return parseDuration(value);\n            }\n            return parsedValue;\n        },\n        /**\n         * Specifies the Segment duration, in units of the value of the @timescale.\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed duration\n         */\n        d(value) {\n            return parseInt(value, 10);\n        },\n        /**\n         * Specifies the MPD start time, in @timescale units, the first Segment in the series\n         * starts relative to the beginning of the Period\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed time\n         */\n        t(value) {\n            return parseInt(value, 10);\n        },\n        /**\n         * Specifies the repeat count of the number of following contiguous Segments with the\n         * same duration expressed by the value of @d\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed number\n         */\n        r(value) {\n            return parseInt(value, 10);\n        },\n        /**\n         * Default parser for all other attributes. Acts as a no-op and just returns the value\n         * as a string\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {string}\n         *         Unparsed value\n         */\n        DEFAULT(value) {\n            return value;\n        }\n    };\n    /**\n     * Gets all the attributes and values of the provided node, parses attributes with known\n     * types, and returns an object with attribute names mapped to values.\n     *\n     * @param {Node} el\n     *        The node to parse attributes from\n     * @return {Object}\n     *         Object with all attributes of el parsed\n     */\n\n    const parseAttributes = el => {\n        if (!(el && el.attributes)) {\n            return {};\n        }\n        return from(el.attributes).reduce((a, e) => {\n            const parseFn = parsers[e.name] || parsers.DEFAULT;\n            a[e.name] = parseFn(e.value);\n            return a;\n        }, {});\n    };\n    const keySystemsMap = {\n        'urn:uuid:1077efec-c0b2-4d02-ace3-3c1e52e2fb4b': 'org.w3.clearkey',\n        'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed': 'com.widevine.alpha',\n        'urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95': 'com.microsoft.playready',\n        'urn:uuid:f239e769-efa3-4850-9c16-a903c6932efb': 'com.adobe.primetime'\n    };\n    /**\n     * Builds a list of urls that is the product of the reference urls and BaseURL values\n     *\n     * @param {string[]} referenceUrls\n     *        List of reference urls to resolve to\n     * @param {Node[]} baseUrlElements\n     *        List of BaseURL nodes from the mpd\n     * @return {string[]}\n     *         List of resolved urls\n     */\n\n    const buildBaseUrls = (referenceUrls, baseUrlElements) => {\n        if (!baseUrlElements.length) {\n            return referenceUrls;\n        }\n        return flatten(referenceUrls.map(function (reference) {\n            return baseUrlElements.map(function (baseUrlElement) {\n                return resolveUrl$1(reference, getContent(baseUrlElement));\n            });\n        }));\n    };\n    /**\n     * Contains all Segment information for its containing AdaptationSet\n     *\n     * @typedef {Object} SegmentInformation\n     * @property {Object|undefined} template\n     *           Contains the attributes for the SegmentTemplate node\n     * @property {Object[]|undefined} segmentTimeline\n     *           Contains a list of atrributes for each S node within the SegmentTimeline node\n     * @property {Object|undefined} list\n     *           Contains the attributes for the SegmentList node\n     * @property {Object|undefined} base\n     *           Contains the attributes for the SegmentBase node\n     */\n\n    /**\n     * Returns all available Segment information contained within the AdaptationSet node\n     *\n     * @param {Node} adaptationSet\n     *        The AdaptationSet node to get Segment information from\n     * @return {SegmentInformation}\n     *         The Segment information contained within the provided AdaptationSet\n     */\n\n    const getSegmentInformation = adaptationSet => {\n        const segmentTemplate = findChildren(adaptationSet, 'SegmentTemplate')[0];\n        const segmentList = findChildren(adaptationSet, 'SegmentList')[0];\n        const segmentUrls = segmentList && findChildren(segmentList, 'SegmentURL').map(s => merge$1({\n            tag: 'SegmentURL'\n        }, parseAttributes(s)));\n        const segmentBase = findChildren(adaptationSet, 'SegmentBase')[0];\n        const segmentTimelineParentNode = segmentList || segmentTemplate;\n        const segmentTimeline = segmentTimelineParentNode && findChildren(segmentTimelineParentNode, 'SegmentTimeline')[0];\n        const segmentInitializationParentNode = segmentList || segmentBase || segmentTemplate;\n        const segmentInitialization = segmentInitializationParentNode && findChildren(segmentInitializationParentNode, 'Initialization')[0]; // SegmentTemplate is handled slightly differently, since it can have both\n        // @initialization and an <Initialization> node.  @initialization can be templated,\n        // while the node can have a url and range specified.  If the <SegmentTemplate> has\n        // both @initialization and an <Initialization> subelement we opt to override with\n        // the node, as this interaction is not defined in the spec.\n\n        const template = segmentTemplate && parseAttributes(segmentTemplate);\n        if (template && segmentInitialization) {\n            template.initialization = segmentInitialization && parseAttributes(segmentInitialization);\n        } else if (template && template.initialization) {\n            // If it is @initialization we convert it to an object since this is the format that\n            // later functions will rely on for the initialization segment.  This is only valid\n            // for <SegmentTemplate>\n            template.initialization = {\n                sourceURL: template.initialization\n            };\n        }\n        const segmentInfo = {\n            template,\n            segmentTimeline: segmentTimeline && findChildren(segmentTimeline, 'S').map(s => parseAttributes(s)),\n            list: segmentList && merge$1(parseAttributes(segmentList), {\n                segmentUrls,\n                initialization: parseAttributes(segmentInitialization)\n            }),\n            base: segmentBase && merge$1(parseAttributes(segmentBase), {\n                initialization: parseAttributes(segmentInitialization)\n            })\n        };\n        Object.keys(segmentInfo).forEach(key => {\n            if (!segmentInfo[key]) {\n                delete segmentInfo[key];\n            }\n        });\n        return segmentInfo;\n    };\n    /**\n     * Contains Segment information and attributes needed to construct a Playlist object\n     * from a Representation\n     *\n     * @typedef {Object} RepresentationInformation\n     * @property {SegmentInformation} segmentInfo\n     *           Segment information for this Representation\n     * @property {Object} attributes\n     *           Inherited attributes for this Representation\n     */\n\n    /**\n     * Maps a Representation node to an object containing Segment information and attributes\n     *\n     * @name inheritBaseUrlsCallback\n     * @function\n     * @param {Node} representation\n     *        Representation node from the mpd\n     * @return {RepresentationInformation}\n     *         Representation information needed to construct a Playlist object\n     */\n\n    /**\n     * Returns a callback for Array.prototype.map for mapping Representation nodes to\n     * Segment information and attributes using inherited BaseURL nodes.\n     *\n     * @param {Object} adaptationSetAttributes\n     *        Contains attributes inherited by the AdaptationSet\n     * @param {string[]} adaptationSetBaseUrls\n     *        Contains list of resolved base urls inherited by the AdaptationSet\n     * @param {SegmentInformation} adaptationSetSegmentInfo\n     *        Contains Segment information for the AdaptationSet\n     * @return {inheritBaseUrlsCallback}\n     *         Callback map function\n     */\n\n    const inheritBaseUrls = (adaptationSetAttributes, adaptationSetBaseUrls, adaptationSetSegmentInfo) => representation => {\n        const repBaseUrlElements = findChildren(representation, 'BaseURL');\n        const repBaseUrls = buildBaseUrls(adaptationSetBaseUrls, repBaseUrlElements);\n        const attributes = merge$1(adaptationSetAttributes, parseAttributes(representation));\n        const representationSegmentInfo = getSegmentInformation(representation);\n        return repBaseUrls.map(baseUrl => {\n            return {\n                segmentInfo: merge$1(adaptationSetSegmentInfo, representationSegmentInfo),\n                attributes: merge$1(attributes, {\n                    baseUrl\n                })\n            };\n        });\n    };\n    /**\n     * Tranforms a series of content protection nodes to\n     * an object containing pssh data by key system\n     *\n     * @param {Node[]} contentProtectionNodes\n     *        Content protection nodes\n     * @return {Object}\n     *        Object containing pssh data by key system\n     */\n\n    const generateKeySystemInformation = contentProtectionNodes => {\n        return contentProtectionNodes.reduce((acc, node) => {\n            const attributes = parseAttributes(node); // Although it could be argued that according to the UUID RFC spec the UUID string (a-f chars) should be generated\n            // as a lowercase string it also mentions it should be treated as case-insensitive on input. Since the key system\n            // UUIDs in the keySystemsMap are hardcoded as lowercase in the codebase there isn't any reason not to do\n            // .toLowerCase() on the input UUID string from the manifest (at least I could not think of one).\n\n            if (attributes.schemeIdUri) {\n                attributes.schemeIdUri = attributes.schemeIdUri.toLowerCase();\n            }\n            const keySystem = keySystemsMap[attributes.schemeIdUri];\n            if (keySystem) {\n                acc[keySystem] = {\n                    attributes\n                };\n                const psshNode = findChildren(node, 'cenc:pssh')[0];\n                if (psshNode) {\n                    const pssh = getContent(psshNode);\n                    acc[keySystem].pssh = pssh && decodeB64ToUint8Array(pssh);\n                }\n            }\n            return acc;\n        }, {});\n    }; // defined in ANSI_SCTE 214-1 2016\n\n    const parseCaptionServiceMetadata = service => {\n        // 608 captions\n        if (service.schemeIdUri === 'urn:scte:dash:cc:cea-608:2015') {\n            const values = typeof service.value !== 'string' ? [] : service.value.split(';');\n            return values.map(value => {\n                let channel;\n                let language; // default language to value\n\n                language = value;\n                if (/^CC\\d=/.test(value)) {\n                    [channel, language] = value.split('=');\n                } else if (/^CC\\d$/.test(value)) {\n                    channel = value;\n                }\n                return {\n                    channel,\n                    language\n                };\n            });\n        } else if (service.schemeIdUri === 'urn:scte:dash:cc:cea-708:2015') {\n            const values = typeof service.value !== 'string' ? [] : service.value.split(';');\n            return values.map(value => {\n                const flags = {\n                    // service or channel number 1-63\n                    'channel': undefined,\n                    // language is a 3ALPHA per ISO 639.2/B\n                    // field is required\n                    'language': undefined,\n                    // BIT 1/0 or ?\n                    // default value is 1, meaning 16:9 aspect ratio, 0 is 4:3, ? is unknown\n                    'aspectRatio': 1,\n                    // BIT 1/0\n                    // easy reader flag indicated the text is tailed to the needs of beginning readers\n                    // default 0, or off\n                    'easyReader': 0,\n                    // BIT 1/0\n                    // If 3d metadata is present (CEA-708.1) then 1\n                    // default 0\n                    '3D': 0\n                };\n                if (/=/.test(value)) {\n                    const [channel, opts = ''] = value.split('=');\n                    flags.channel = channel;\n                    flags.language = value;\n                    opts.split(',').forEach(opt => {\n                        const [name, val] = opt.split(':');\n                        if (name === 'lang') {\n                            flags.language = val; // er for easyReadery\n                        } else if (name === 'er') {\n                            flags.easyReader = Number(val); // war for wide aspect ratio\n                        } else if (name === 'war') {\n                            flags.aspectRatio = Number(val);\n                        } else if (name === '3D') {\n                            flags['3D'] = Number(val);\n                        }\n                    });\n                } else {\n                    flags.language = value;\n                }\n                if (flags.channel) {\n                    flags.channel = 'SERVICE' + flags.channel;\n                }\n                return flags;\n            });\n        }\n    };\n    /**\n     * Maps an AdaptationSet node to a list of Representation information objects\n     *\n     * @name toRepresentationsCallback\n     * @function\n     * @param {Node} adaptationSet\n     *        AdaptationSet node from the mpd\n     * @return {RepresentationInformation[]}\n     *         List of objects containing Representaion information\n     */\n\n    /**\n     * Returns a callback for Array.prototype.map for mapping AdaptationSet nodes to a list of\n     * Representation information objects\n     *\n     * @param {Object} periodAttributes\n     *        Contains attributes inherited by the Period\n     * @param {string[]} periodBaseUrls\n     *        Contains list of resolved base urls inherited by the Period\n     * @param {string[]} periodSegmentInfo\n     *        Contains Segment Information at the period level\n     * @return {toRepresentationsCallback}\n     *         Callback map function\n     */\n\n    const toRepresentations = (periodAttributes, periodBaseUrls, periodSegmentInfo) => adaptationSet => {\n        const adaptationSetAttributes = parseAttributes(adaptationSet);\n        const adaptationSetBaseUrls = buildBaseUrls(periodBaseUrls, findChildren(adaptationSet, 'BaseURL'));\n        const role = findChildren(adaptationSet, 'Role')[0];\n        const roleAttributes = {\n            role: parseAttributes(role)\n        };\n        let attrs = merge$1(periodAttributes, adaptationSetAttributes, roleAttributes);\n        const accessibility = findChildren(adaptationSet, 'Accessibility')[0];\n        const captionServices = parseCaptionServiceMetadata(parseAttributes(accessibility));\n        if (captionServices) {\n            attrs = merge$1(attrs, {\n                captionServices\n            });\n        }\n        const label = findChildren(adaptationSet, 'Label')[0];\n        if (label && label.childNodes.length) {\n            const labelVal = label.childNodes[0].nodeValue.trim();\n            attrs = merge$1(attrs, {\n                label: labelVal\n            });\n        }\n        const contentProtection = generateKeySystemInformation(findChildren(adaptationSet, 'ContentProtection'));\n        if (Object.keys(contentProtection).length) {\n            attrs = merge$1(attrs, {\n                contentProtection\n            });\n        }\n        const segmentInfo = getSegmentInformation(adaptationSet);\n        const representations = findChildren(adaptationSet, 'Representation');\n        const adaptationSetSegmentInfo = merge$1(periodSegmentInfo, segmentInfo);\n        return flatten(representations.map(inheritBaseUrls(attrs, adaptationSetBaseUrls, adaptationSetSegmentInfo)));\n    };\n    /**\n     * Contains all period information for mapping nodes onto adaptation sets.\n     *\n     * @typedef {Object} PeriodInformation\n     * @property {Node} period.node\n     *           Period node from the mpd\n     * @property {Object} period.attributes\n     *           Parsed period attributes from node plus any added\n     */\n\n    /**\n     * Maps a PeriodInformation object to a list of Representation information objects for all\n     * AdaptationSet nodes contained within the Period.\n     *\n     * @name toAdaptationSetsCallback\n     * @function\n     * @param {PeriodInformation} period\n     *        Period object containing necessary period information\n     * @param {number} periodStart\n     *        Start time of the Period within the mpd\n     * @return {RepresentationInformation[]}\n     *         List of objects containing Representaion information\n     */\n\n    /**\n     * Returns a callback for Array.prototype.map for mapping Period nodes to a list of\n     * Representation information objects\n     *\n     * @param {Object} mpdAttributes\n     *        Contains attributes inherited by the mpd\n     * @param {string[]} mpdBaseUrls\n     *        Contains list of resolved base urls inherited by the mpd\n     * @return {toAdaptationSetsCallback}\n     *         Callback map function\n     */\n\n    const toAdaptationSets = (mpdAttributes, mpdBaseUrls) => (period, index) => {\n        const periodBaseUrls = buildBaseUrls(mpdBaseUrls, findChildren(period.node, 'BaseURL'));\n        const periodAttributes = merge$1(mpdAttributes, {\n            periodStart: period.attributes.start\n        });\n        if (typeof period.attributes.duration === 'number') {\n            periodAttributes.periodDuration = period.attributes.duration;\n        }\n        const adaptationSets = findChildren(period.node, 'AdaptationSet');\n        const periodSegmentInfo = getSegmentInformation(period.node);\n        return flatten(adaptationSets.map(toRepresentations(periodAttributes, periodBaseUrls, periodSegmentInfo)));\n    };\n    /**\n     * Gets Period@start property for a given period.\n     *\n     * @param {Object} options\n     *        Options object\n     * @param {Object} options.attributes\n     *        Period attributes\n     * @param {Object} [options.priorPeriodAttributes]\n     *        Prior period attributes (if prior period is available)\n     * @param {string} options.mpdType\n     *        The MPD@type these periods came from\n     * @return {number|null}\n     *         The period start, or null if it's an early available period or error\n     */\n\n    const getPeriodStart = ({\n                                attributes,\n                                priorPeriodAttributes,\n                                mpdType\n                            }) => {\n        // Summary of period start time calculation from DASH spec section 5.3.2.1\n        //\n        // A period's start is the first period's start + time elapsed after playing all\n        // prior periods to this one. Periods continue one after the other in time (without\n        // gaps) until the end of the presentation.\n        //\n        // The value of Period@start should be:\n        // 1. if Period@start is present: value of Period@start\n        // 2. if previous period exists and it has @duration: previous Period@start +\n        //    previous Period@duration\n        // 3. if this is first period and MPD@type is 'static': 0\n        // 4. in all other cases, consider the period an \"early available period\" (note: not\n        //    currently supported)\n        // (1)\n        if (typeof attributes.start === 'number') {\n            return attributes.start;\n        } // (2)\n\n        if (priorPeriodAttributes && typeof priorPeriodAttributes.start === 'number' && typeof priorPeriodAttributes.duration === 'number') {\n            return priorPeriodAttributes.start + priorPeriodAttributes.duration;\n        } // (3)\n\n        if (!priorPeriodAttributes && mpdType === 'static') {\n            return 0;\n        } // (4)\n        // There is currently no logic for calculating the Period@start value if there is\n        // no Period@start or prior Period@start and Period@duration available. This is not made\n        // explicit by the DASH interop guidelines or the DASH spec, however, since there's\n        // nothing about any other resolution strategies, it's implied. Thus, this case should\n        // be considered an early available period, or error, and null should suffice for both\n        // of those cases.\n\n        return null;\n    };\n    /**\n     * Traverses the mpd xml tree to generate a list of Representation information objects\n     * that have inherited attributes from parent nodes\n     *\n     * @param {Node} mpd\n     *        The root node of the mpd\n     * @param {Object} options\n     *        Available options for inheritAttributes\n     * @param {string} options.manifestUri\n     *        The uri source of the mpd\n     * @param {number} options.NOW\n     *        Current time per DASH IOP.  Default is current time in ms since epoch\n     * @param {number} options.clientOffset\n     *        Client time difference from NOW (in milliseconds)\n     * @return {RepresentationInformation[]}\n     *         List of objects containing Representation information\n     */\n\n    const inheritAttributes = (mpd, options = {}) => {\n        const {\n            manifestUri = '',\n            NOW = Date.now(),\n            clientOffset = 0\n        } = options;\n        const periodNodes = findChildren(mpd, 'Period');\n        if (!periodNodes.length) {\n            throw new Error(errors.INVALID_NUMBER_OF_PERIOD);\n        }\n        const locations = findChildren(mpd, 'Location');\n        const mpdAttributes = parseAttributes(mpd);\n        const mpdBaseUrls = buildBaseUrls([manifestUri], findChildren(mpd, 'BaseURL')); // See DASH spec section 5.3.1.2, Semantics of MPD element. Default type to 'static'.\n\n        mpdAttributes.type = mpdAttributes.type || 'static';\n        mpdAttributes.sourceDuration = mpdAttributes.mediaPresentationDuration || 0;\n        mpdAttributes.NOW = NOW;\n        mpdAttributes.clientOffset = clientOffset;\n        if (locations.length) {\n            mpdAttributes.locations = locations.map(getContent);\n        }\n        const periods = []; // Since toAdaptationSets acts on individual periods right now, the simplest approach to\n        // adding properties that require looking at prior periods is to parse attributes and add\n        // missing ones before toAdaptationSets is called. If more such properties are added, it\n        // may be better to refactor toAdaptationSets.\n\n        periodNodes.forEach((node, index) => {\n            const attributes = parseAttributes(node); // Use the last modified prior period, as it may contain added information necessary\n            // for this period.\n\n            const priorPeriod = periods[index - 1];\n            attributes.start = getPeriodStart({\n                attributes,\n                priorPeriodAttributes: priorPeriod ? priorPeriod.attributes : null,\n                mpdType: mpdAttributes.type\n            });\n            periods.push({\n                node,\n                attributes\n            });\n        });\n        return {\n            locations: mpdAttributes.locations,\n            representationInfo: flatten(periods.map(toAdaptationSets(mpdAttributes, mpdBaseUrls)))\n        };\n    };\n    const stringToMpdXml = manifestString => {\n        if (manifestString === '') {\n            throw new Error(errors.DASH_EMPTY_MANIFEST);\n        }\n        const parser = new DOMParser();\n        let xml;\n        let mpd;\n        try {\n            xml = parser.parseFromString(manifestString, 'application/xml');\n            mpd = xml && xml.documentElement.tagName === 'MPD' ? xml.documentElement : null;\n        } catch (e) {// ie 11 throwsw on invalid xml\n        }\n        if (!mpd || mpd && mpd.getElementsByTagName('parsererror').length > 0) {\n            throw new Error(errors.DASH_INVALID_XML);\n        }\n        return mpd;\n    };\n\n    /**\n     * Parses the manifest for a UTCTiming node, returning the nodes attributes if found\n     *\n     * @param {string} mpd\n     *        XML string of the MPD manifest\n     * @return {Object|null}\n     *         Attributes of UTCTiming node specified in the manifest. Null if none found\n     */\n\n    const parseUTCTimingScheme = mpd => {\n        const UTCTimingNode = findChildren(mpd, 'UTCTiming')[0];\n        if (!UTCTimingNode) {\n            return null;\n        }\n        const attributes = parseAttributes(UTCTimingNode);\n        switch (attributes.schemeIdUri) {\n            case 'urn:mpeg:dash:utc:http-head:2014':\n            case 'urn:mpeg:dash:utc:http-head:2012':\n                attributes.method = 'HEAD';\n                break;\n            case 'urn:mpeg:dash:utc:http-xsdate:2014':\n            case 'urn:mpeg:dash:utc:http-iso:2014':\n            case 'urn:mpeg:dash:utc:http-xsdate:2012':\n            case 'urn:mpeg:dash:utc:http-iso:2012':\n                attributes.method = 'GET';\n                break;\n            case 'urn:mpeg:dash:utc:direct:2014':\n            case 'urn:mpeg:dash:utc:direct:2012':\n                attributes.method = 'DIRECT';\n                attributes.value = Date.parse(attributes.value);\n                break;\n            case 'urn:mpeg:dash:utc:http-ntp:2014':\n            case 'urn:mpeg:dash:utc:ntp:2014':\n            case 'urn:mpeg:dash:utc:sntp:2014':\n            default:\n                throw new Error(errors.UNSUPPORTED_UTC_TIMING_SCHEME);\n        }\n        return attributes;\n    };\n    /*\n   * Given a DASH manifest string and options, parses the DASH manifest into an object in the\n   * form outputed by m3u8-parser and accepted by videojs/http-streaming.\n   *\n   * For live DASH manifests, if `previousManifest` is provided in options, then the newly\n   * parsed DASH manifest will have its media sequence and discontinuity sequence values\n   * updated to reflect its position relative to the prior manifest.\n   *\n   * @param {string} manifestString - the DASH manifest as a string\n   * @param {options} [options] - any options\n   *\n   * @return {Object} the manifest object\n   */\n\n    const parse = (manifestString, options = {}) => {\n        const parsedManifestInfo = inheritAttributes(stringToMpdXml(manifestString), options);\n        const playlists = toPlaylists(parsedManifestInfo.representationInfo);\n        return toM3u8({\n            dashPlaylists: playlists,\n            locations: parsedManifestInfo.locations,\n            sidxMapping: options.sidxMapping,\n            previousManifest: options.previousManifest\n        });\n    };\n    /**\n     * Parses the manifest for a UTCTiming node, returning the nodes attributes if found\n     *\n     * @param {string} manifestString\n     *        XML string of the MPD manifest\n     * @return {Object|null}\n     *         Attributes of UTCTiming node specified in the manifest. Null if none found\n     */\n\n    const parseUTCTiming = manifestString => parseUTCTimingScheme(stringToMpdXml(manifestString));\n\n    var MAX_UINT32 = Math.pow(2, 32);\n    var getUint64$1 = function (uint8) {\n        var dv = new DataView(uint8.buffer, uint8.byteOffset, uint8.byteLength);\n        var value;\n        if (dv.getBigUint64) {\n            value = dv.getBigUint64(0);\n            if (value < Number.MAX_SAFE_INTEGER) {\n                return Number(value);\n            }\n            return value;\n        }\n        return dv.getUint32(0) * MAX_UINT32 + dv.getUint32(4);\n    };\n    var numbers = {\n        getUint64: getUint64$1,\n        MAX_UINT32: MAX_UINT32\n    };\n\n    var getUint64 = numbers.getUint64;\n    var parseSidx = function (data) {\n        var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n            result = {\n                version: data[0],\n                flags: new Uint8Array(data.subarray(1, 4)),\n                references: [],\n                referenceId: view.getUint32(4),\n                timescale: view.getUint32(8)\n            },\n            i = 12;\n        if (result.version === 0) {\n            result.earliestPresentationTime = view.getUint32(i);\n            result.firstOffset = view.getUint32(i + 4);\n            i += 8;\n        } else {\n            // read 64 bits\n            result.earliestPresentationTime = getUint64(data.subarray(i));\n            result.firstOffset = getUint64(data.subarray(i + 8));\n            i += 16;\n        }\n        i += 2; // reserved\n\n        var referenceCount = view.getUint16(i);\n        i += 2; // start of references\n\n        for (; referenceCount > 0; i += 12, referenceCount--) {\n            result.references.push({\n                referenceType: (data[i] & 0x80) >>> 7,\n                referencedSize: view.getUint32(i) & 0x7FFFFFFF,\n                subsegmentDuration: view.getUint32(i + 4),\n                startsWithSap: !!(data[i + 8] & 0x80),\n                sapType: (data[i + 8] & 0x70) >>> 4,\n                sapDeltaTime: view.getUint32(i + 8) & 0x0FFFFFFF\n            });\n        }\n        return result;\n    };\n    var parseSidx_1 = parseSidx;\n\n    var ID3 = toUint8([0x49, 0x44, 0x33]);\n    var getId3Size = function getId3Size(bytes, offset) {\n        if (offset === void 0) {\n            offset = 0;\n        }\n        bytes = toUint8(bytes);\n        var flags = bytes[offset + 5];\n        var returnSize = bytes[offset + 6] << 21 | bytes[offset + 7] << 14 | bytes[offset + 8] << 7 | bytes[offset + 9];\n        var footerPresent = (flags & 16) >> 4;\n        if (footerPresent) {\n            return returnSize + 20;\n        }\n        return returnSize + 10;\n    };\n    var getId3Offset = function getId3Offset(bytes, offset) {\n        if (offset === void 0) {\n            offset = 0;\n        }\n        bytes = toUint8(bytes);\n        if (bytes.length - offset < 10 || !bytesMatch(bytes, ID3, {\n            offset: offset\n        })) {\n            return offset;\n        }\n        offset += getId3Size(bytes, offset); // recursive check for id3 tags as some files\n        // have multiple ID3 tag sections even though\n        // they should not.\n\n        return getId3Offset(bytes, offset);\n    };\n\n    var normalizePath$1 = function normalizePath(path) {\n        if (typeof path === 'string') {\n            return stringToBytes(path);\n        }\n        if (typeof path === 'number') {\n            return path;\n        }\n        return path;\n    };\n    var normalizePaths$1 = function normalizePaths(paths) {\n        if (!Array.isArray(paths)) {\n            return [normalizePath$1(paths)];\n        }\n        return paths.map(function (p) {\n            return normalizePath$1(p);\n        });\n    };\n    /**\n     * find any number of boxes by name given a path to it in an iso bmff\n     * such as mp4.\n     *\n     * @param {TypedArray} bytes\n     *        bytes for the iso bmff to search for boxes in\n     *\n     * @param {Uint8Array[]|string[]|string|Uint8Array} name\n     *        An array of paths or a single path representing the name\n     *        of boxes to search through in bytes. Paths may be\n     *        uint8 (character codes) or strings.\n     *\n     * @param {boolean} [complete=false]\n     *        Should we search only for complete boxes on the final path.\n     *        This is very useful when you do not want to get back partial boxes\n     *        in the case of streaming files.\n     *\n     * @return {Uint8Array[]}\n     *         An array of the end paths that we found.\n     */\n\n    var findBox = function findBox(bytes, paths, complete) {\n        if (complete === void 0) {\n            complete = false;\n        }\n        paths = normalizePaths$1(paths);\n        bytes = toUint8(bytes);\n        var results = [];\n        if (!paths.length) {\n            // short-circuit the search for empty paths\n            return results;\n        }\n        var i = 0;\n        while (i < bytes.length) {\n            var size = (bytes[i] << 24 | bytes[i + 1] << 16 | bytes[i + 2] << 8 | bytes[i + 3]) >>> 0;\n            var type = bytes.subarray(i + 4, i + 8); // invalid box format.\n\n            if (size === 0) {\n                break;\n            }\n            var end = i + size;\n            if (end > bytes.length) {\n                // this box is bigger than the number of bytes we have\n                // and complete is set, we cannot find any more boxes.\n                if (complete) {\n                    break;\n                }\n                end = bytes.length;\n            }\n            var data = bytes.subarray(i + 8, end);\n            if (bytesMatch(type, paths[0])) {\n                if (paths.length === 1) {\n                    // this is the end of the path and we've found the box we were\n                    // looking for\n                    results.push(data);\n                } else {\n                    // recursively search for the next box along the path\n                    results.push.apply(results, findBox(data, paths.slice(1), complete));\n                }\n            }\n            i = end;\n        } // we've finished searching all of bytes\n\n        return results;\n    };\n\n    // https://matroska-org.github.io/libebml/specs.html\n    // https://www.matroska.org/technical/elements.html\n    // https://www.webmproject.org/docs/container/\n\n    var EBML_TAGS = {\n        EBML: toUint8([0x1A, 0x45, 0xDF, 0xA3]),\n        DocType: toUint8([0x42, 0x82]),\n        Segment: toUint8([0x18, 0x53, 0x80, 0x67]),\n        SegmentInfo: toUint8([0x15, 0x49, 0xA9, 0x66]),\n        Tracks: toUint8([0x16, 0x54, 0xAE, 0x6B]),\n        Track: toUint8([0xAE]),\n        TrackNumber: toUint8([0xd7]),\n        DefaultDuration: toUint8([0x23, 0xe3, 0x83]),\n        TrackEntry: toUint8([0xAE]),\n        TrackType: toUint8([0x83]),\n        FlagDefault: toUint8([0x88]),\n        CodecID: toUint8([0x86]),\n        CodecPrivate: toUint8([0x63, 0xA2]),\n        VideoTrack: toUint8([0xe0]),\n        AudioTrack: toUint8([0xe1]),\n        // Not used yet, but will be used for live webm/mkv\n        // see https://www.matroska.org/technical/basics.html#block-structure\n        // see https://www.matroska.org/technical/basics.html#simpleblock-structure\n        Cluster: toUint8([0x1F, 0x43, 0xB6, 0x75]),\n        Timestamp: toUint8([0xE7]),\n        TimestampScale: toUint8([0x2A, 0xD7, 0xB1]),\n        BlockGroup: toUint8([0xA0]),\n        BlockDuration: toUint8([0x9B]),\n        Block: toUint8([0xA1]),\n        SimpleBlock: toUint8([0xA3])\n    };\n    /**\n     * This is a simple table to determine the length\n     * of things in ebml. The length is one based (starts at 1,\n     * rather than zero) and for every zero bit before a one bit\n     * we add one to length. We also need this table because in some\n     * case we have to xor all the length bits from another value.\n     */\n\n    var LENGTH_TABLE = [128, 64, 32, 16, 8, 4, 2, 1];\n    var getLength = function getLength(byte) {\n        var len = 1;\n        for (var i = 0; i < LENGTH_TABLE.length; i++) {\n            if (byte & LENGTH_TABLE[i]) {\n                break;\n            }\n            len++;\n        }\n        return len;\n    }; // length in ebml is stored in the first 4 to 8 bits\n    // of the first byte. 4 for the id length and 8 for the\n    // data size length. Length is measured by converting the number to binary\n    // then 1 + the number of zeros before a 1 is encountered starting\n    // from the left.\n\n    var getvint = function getvint(bytes, offset, removeLength, signed) {\n        if (removeLength === void 0) {\n            removeLength = true;\n        }\n        if (signed === void 0) {\n            signed = false;\n        }\n        var length = getLength(bytes[offset]);\n        var valueBytes = bytes.subarray(offset, offset + length); // NOTE that we do **not** subarray here because we need to copy these bytes\n        // as they will be modified below to remove the dataSizeLen bits and we do not\n        // want to modify the original data. normally we could just call slice on\n        // uint8array but ie 11 does not support that...\n\n        if (removeLength) {\n            valueBytes = Array.prototype.slice.call(bytes, offset, offset + length);\n            valueBytes[0] ^= LENGTH_TABLE[length - 1];\n        }\n        return {\n            length: length,\n            value: bytesToNumber(valueBytes, {\n                signed: signed\n            }),\n            bytes: valueBytes\n        };\n    };\n    var normalizePath = function normalizePath(path) {\n        if (typeof path === 'string') {\n            return path.match(/.{1,2}/g).map(function (p) {\n                return normalizePath(p);\n            });\n        }\n        if (typeof path === 'number') {\n            return numberToBytes(path);\n        }\n        return path;\n    };\n    var normalizePaths = function normalizePaths(paths) {\n        if (!Array.isArray(paths)) {\n            return [normalizePath(paths)];\n        }\n        return paths.map(function (p) {\n            return normalizePath(p);\n        });\n    };\n    var getInfinityDataSize = function getInfinityDataSize(id, bytes, offset) {\n        if (offset >= bytes.length) {\n            return bytes.length;\n        }\n        var innerid = getvint(bytes, offset, false);\n        if (bytesMatch(id.bytes, innerid.bytes)) {\n            return offset;\n        }\n        var dataHeader = getvint(bytes, offset + innerid.length);\n        return getInfinityDataSize(id, bytes, offset + dataHeader.length + dataHeader.value + innerid.length);\n    };\n    /**\n     * Notes on the EBLM format.\n     *\n     * EBLM uses \"vints\" tags. Every vint tag contains\n     * two parts\n     *\n     * 1. The length from the first byte. You get this by\n     *    converting the byte to binary and counting the zeros\n     *    before a 1. Then you add 1 to that. Examples\n     *    00011111 = length 4 because there are 3 zeros before a 1.\n     *    00100000 = length 3 because there are 2 zeros before a 1.\n     *    00000011 = length 7 because there are 6 zeros before a 1.\n     *\n     * 2. The bits used for length are removed from the first byte\n     *    Then all the bytes are merged into a value. NOTE: this\n     *    is not the case for id ebml tags as there id includes\n     *    length bits.\n     *\n     */\n\n    var findEbml = function findEbml(bytes, paths) {\n        paths = normalizePaths(paths);\n        bytes = toUint8(bytes);\n        var results = [];\n        if (!paths.length) {\n            return results;\n        }\n        var i = 0;\n        while (i < bytes.length) {\n            var id = getvint(bytes, i, false);\n            var dataHeader = getvint(bytes, i + id.length);\n            var dataStart = i + id.length + dataHeader.length; // dataSize is unknown or this is a live stream\n\n            if (dataHeader.value === 0x7f) {\n                dataHeader.value = getInfinityDataSize(id, bytes, dataStart);\n                if (dataHeader.value !== bytes.length) {\n                    dataHeader.value -= dataStart;\n                }\n            }\n            var dataEnd = dataStart + dataHeader.value > bytes.length ? bytes.length : dataStart + dataHeader.value;\n            var data = bytes.subarray(dataStart, dataEnd);\n            if (bytesMatch(paths[0], id.bytes)) {\n                if (paths.length === 1) {\n                    // this is the end of the paths and we've found the tag we were\n                    // looking for\n                    results.push(data);\n                } else {\n                    // recursively search for the next tag inside of the data\n                    // of this one\n                    results = results.concat(findEbml(data, paths.slice(1)));\n                }\n            }\n            var totalLength = id.length + dataHeader.length + data.length; // move past this tag entirely, we are not looking for it\n\n            i += totalLength;\n        }\n        return results;\n    }; // see https://www.matroska.org/technical/basics.html#block-structure\n\n    var NAL_TYPE_ONE = toUint8([0x00, 0x00, 0x00, 0x01]);\n    var NAL_TYPE_TWO = toUint8([0x00, 0x00, 0x01]);\n    var EMULATION_PREVENTION = toUint8([0x00, 0x00, 0x03]);\n    /**\n     * Expunge any \"Emulation Prevention\" bytes from a \"Raw Byte\n     * Sequence Payload\"\n     *\n     * @param data {Uint8Array} the bytes of a RBSP from a NAL\n     * unit\n     * @return {Uint8Array} the RBSP without any Emulation\n     * Prevention Bytes\n     */\n\n    var discardEmulationPreventionBytes = function discardEmulationPreventionBytes(bytes) {\n        var positions = [];\n        var i = 1; // Find all `Emulation Prevention Bytes`\n\n        while (i < bytes.length - 2) {\n            if (bytesMatch(bytes.subarray(i, i + 3), EMULATION_PREVENTION)) {\n                positions.push(i + 2);\n                i++;\n            }\n            i++;\n        } // If no Emulation Prevention Bytes were found just return the original\n        // array\n\n        if (positions.length === 0) {\n            return bytes;\n        } // Create a new array to hold the NAL unit data\n\n        var newLength = bytes.length - positions.length;\n        var newData = new Uint8Array(newLength);\n        var sourceIndex = 0;\n        for (i = 0; i < newLength; sourceIndex++, i++) {\n            if (sourceIndex === positions[0]) {\n                // Skip this byte\n                sourceIndex++; // Remove this position index\n\n                positions.shift();\n            }\n            newData[i] = bytes[sourceIndex];\n        }\n        return newData;\n    };\n    var findNal = function findNal(bytes, dataType, types, nalLimit) {\n        if (nalLimit === void 0) {\n            nalLimit = Infinity;\n        }\n        bytes = toUint8(bytes);\n        types = [].concat(types);\n        var i = 0;\n        var nalStart;\n        var nalsFound = 0; // keep searching until:\n        // we reach the end of bytes\n        // we reach the maximum number of nals they want to seach\n        // NOTE: that we disregard nalLimit when we have found the start\n        // of the nal we want so that we can find the end of the nal we want.\n\n        while (i < bytes.length && (nalsFound < nalLimit || nalStart)) {\n            var nalOffset = void 0;\n            if (bytesMatch(bytes.subarray(i), NAL_TYPE_ONE)) {\n                nalOffset = 4;\n            } else if (bytesMatch(bytes.subarray(i), NAL_TYPE_TWO)) {\n                nalOffset = 3;\n            } // we are unsynced,\n            // find the next nal unit\n\n            if (!nalOffset) {\n                i++;\n                continue;\n            }\n            nalsFound++;\n            if (nalStart) {\n                return discardEmulationPreventionBytes(bytes.subarray(nalStart, i));\n            }\n            var nalType = void 0;\n            if (dataType === 'h264') {\n                nalType = bytes[i + nalOffset] & 0x1f;\n            } else if (dataType === 'h265') {\n                nalType = bytes[i + nalOffset] >> 1 & 0x3f;\n            }\n            if (types.indexOf(nalType) !== -1) {\n                nalStart = i + nalOffset;\n            } // nal header is 1 length for h264, and 2 for h265\n\n            i += nalOffset + (dataType === 'h264' ? 1 : 2);\n        }\n        return bytes.subarray(0, 0);\n    };\n    var findH264Nal = function findH264Nal(bytes, type, nalLimit) {\n        return findNal(bytes, 'h264', type, nalLimit);\n    };\n    var findH265Nal = function findH265Nal(bytes, type, nalLimit) {\n        return findNal(bytes, 'h265', type, nalLimit);\n    };\n\n    var CONSTANTS = {\n        // \"webm\" string literal in hex\n        'webm': toUint8([0x77, 0x65, 0x62, 0x6d]),\n        // \"matroska\" string literal in hex\n        'matroska': toUint8([0x6d, 0x61, 0x74, 0x72, 0x6f, 0x73, 0x6b, 0x61]),\n        // \"fLaC\" string literal in hex\n        'flac': toUint8([0x66, 0x4c, 0x61, 0x43]),\n        // \"OggS\" string literal in hex\n        'ogg': toUint8([0x4f, 0x67, 0x67, 0x53]),\n        // ac-3 sync byte, also works for ec-3 as that is simply a codec\n        // of ac-3\n        'ac3': toUint8([0x0b, 0x77]),\n        // \"RIFF\" string literal in hex used for wav and avi\n        'riff': toUint8([0x52, 0x49, 0x46, 0x46]),\n        // \"AVI\" string literal in hex\n        'avi': toUint8([0x41, 0x56, 0x49]),\n        // \"WAVE\" string literal in hex\n        'wav': toUint8([0x57, 0x41, 0x56, 0x45]),\n        // \"ftyp3g\" string literal in hex\n        '3gp': toUint8([0x66, 0x74, 0x79, 0x70, 0x33, 0x67]),\n        // \"ftyp\" string literal in hex\n        'mp4': toUint8([0x66, 0x74, 0x79, 0x70]),\n        // \"styp\" string literal in hex\n        'fmp4': toUint8([0x73, 0x74, 0x79, 0x70]),\n        // \"ftypqt\" string literal in hex\n        'mov': toUint8([0x66, 0x74, 0x79, 0x70, 0x71, 0x74]),\n        // moov string literal in hex\n        'moov': toUint8([0x6D, 0x6F, 0x6F, 0x76]),\n        // moof string literal in hex\n        'moof': toUint8([0x6D, 0x6F, 0x6F, 0x66])\n    };\n    var _isLikely = {\n        aac: function aac(bytes) {\n            var offset = getId3Offset(bytes);\n            return bytesMatch(bytes, [0xFF, 0x10], {\n                offset: offset,\n                mask: [0xFF, 0x16]\n            });\n        },\n        mp3: function mp3(bytes) {\n            var offset = getId3Offset(bytes);\n            return bytesMatch(bytes, [0xFF, 0x02], {\n                offset: offset,\n                mask: [0xFF, 0x06]\n            });\n        },\n        webm: function webm(bytes) {\n            var docType = findEbml(bytes, [EBML_TAGS.EBML, EBML_TAGS.DocType])[0]; // check if DocType EBML tag is webm\n\n            return bytesMatch(docType, CONSTANTS.webm);\n        },\n        mkv: function mkv(bytes) {\n            var docType = findEbml(bytes, [EBML_TAGS.EBML, EBML_TAGS.DocType])[0]; // check if DocType EBML tag is matroska\n\n            return bytesMatch(docType, CONSTANTS.matroska);\n        },\n        mp4: function mp4(bytes) {\n            // if this file is another base media file format, it is not mp4\n            if (_isLikely['3gp'](bytes) || _isLikely.mov(bytes)) {\n                return false;\n            } // if this file starts with a ftyp or styp box its mp4\n\n            if (bytesMatch(bytes, CONSTANTS.mp4, {\n                offset: 4\n            }) || bytesMatch(bytes, CONSTANTS.fmp4, {\n                offset: 4\n            })) {\n                return true;\n            } // if this file starts with a moof/moov box its mp4\n\n            if (bytesMatch(bytes, CONSTANTS.moof, {\n                offset: 4\n            }) || bytesMatch(bytes, CONSTANTS.moov, {\n                offset: 4\n            })) {\n                return true;\n            }\n        },\n        mov: function mov(bytes) {\n            return bytesMatch(bytes, CONSTANTS.mov, {\n                offset: 4\n            });\n        },\n        '3gp': function gp(bytes) {\n            return bytesMatch(bytes, CONSTANTS['3gp'], {\n                offset: 4\n            });\n        },\n        ac3: function ac3(bytes) {\n            var offset = getId3Offset(bytes);\n            return bytesMatch(bytes, CONSTANTS.ac3, {\n                offset: offset\n            });\n        },\n        ts: function ts(bytes) {\n            if (bytes.length < 189 && bytes.length >= 1) {\n                return bytes[0] === 0x47;\n            }\n            var i = 0; // check the first 376 bytes for two matching sync bytes\n\n            while (i + 188 < bytes.length && i < 188) {\n                if (bytes[i] === 0x47 && bytes[i + 188] === 0x47) {\n                    return true;\n                }\n                i += 1;\n            }\n            return false;\n        },\n        flac: function flac(bytes) {\n            var offset = getId3Offset(bytes);\n            return bytesMatch(bytes, CONSTANTS.flac, {\n                offset: offset\n            });\n        },\n        ogg: function ogg(bytes) {\n            return bytesMatch(bytes, CONSTANTS.ogg);\n        },\n        avi: function avi(bytes) {\n            return bytesMatch(bytes, CONSTANTS.riff) && bytesMatch(bytes, CONSTANTS.avi, {\n                offset: 8\n            });\n        },\n        wav: function wav(bytes) {\n            return bytesMatch(bytes, CONSTANTS.riff) && bytesMatch(bytes, CONSTANTS.wav, {\n                offset: 8\n            });\n        },\n        'h264': function h264(bytes) {\n            // find seq_parameter_set_rbsp\n            return findH264Nal(bytes, 7, 3).length;\n        },\n        'h265': function h265(bytes) {\n            // find video_parameter_set_rbsp or seq_parameter_set_rbsp\n            return findH265Nal(bytes, [32, 33], 3).length;\n        }\n    }; // get all the isLikely functions\n    // but make sure 'ts' is above h264 and h265\n    // but below everything else as it is the least specific\n\n    var isLikelyTypes = Object.keys(_isLikely) // remove ts, h264, h265\n        .filter(function (t) {\n            return t !== 'ts' && t !== 'h264' && t !== 'h265';\n        }) // add it back to the bottom\n        .concat(['ts', 'h264', 'h265']); // make sure we are dealing with uint8 data.\n\n    isLikelyTypes.forEach(function (type) {\n        var isLikelyFn = _isLikely[type];\n        _isLikely[type] = function (bytes) {\n            return isLikelyFn(toUint8(bytes));\n        };\n    }); // export after wrapping\n\n    var isLikely = _isLikely; // A useful list of file signatures can be found here\n    // https://en.wikipedia.org/wiki/List_of_file_signatures\n\n    var detectContainerForBytes = function detectContainerForBytes(bytes) {\n        bytes = toUint8(bytes);\n        for (var i = 0; i < isLikelyTypes.length; i++) {\n            var type = isLikelyTypes[i];\n            if (isLikely[type](bytes)) {\n                return type;\n            }\n        }\n        return '';\n    }; // fmp4 is not a container\n\n    var isLikelyFmp4MediaSegment = function isLikelyFmp4MediaSegment(bytes) {\n        return findBox(bytes, ['moof']).length > 0;\n    };\n\n    /**\n     * mux.js\n     *\n     * Copyright (c) Brightcove\n     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n     */\n    var ONE_SECOND_IN_TS = 90000,\n        // 90kHz clock\n        secondsToVideoTs,\n        secondsToAudioTs,\n        videoTsToSeconds,\n        audioTsToSeconds,\n        audioTsToVideoTs,\n        videoTsToAudioTs,\n        metadataTsToSeconds;\n    secondsToVideoTs = function (seconds) {\n        return seconds * ONE_SECOND_IN_TS;\n    };\n    secondsToAudioTs = function (seconds, sampleRate) {\n        return seconds * sampleRate;\n    };\n    videoTsToSeconds = function (timestamp) {\n        return timestamp / ONE_SECOND_IN_TS;\n    };\n    audioTsToSeconds = function (timestamp, sampleRate) {\n        return timestamp / sampleRate;\n    };\n    audioTsToVideoTs = function (timestamp, sampleRate) {\n        return secondsToVideoTs(audioTsToSeconds(timestamp, sampleRate));\n    };\n    videoTsToAudioTs = function (timestamp, sampleRate) {\n        return secondsToAudioTs(videoTsToSeconds(timestamp), sampleRate);\n    };\n\n    /**\n     * Adjust ID3 tag or caption timing information by the timeline pts values\n     * (if keepOriginalTimestamps is false) and convert to seconds\n     */\n    metadataTsToSeconds = function (timestamp, timelineStartPts, keepOriginalTimestamps) {\n        return videoTsToSeconds(keepOriginalTimestamps ? timestamp : timestamp - timelineStartPts);\n    };\n    var clock = {\n        ONE_SECOND_IN_TS: ONE_SECOND_IN_TS,\n        secondsToVideoTs: secondsToVideoTs,\n        secondsToAudioTs: secondsToAudioTs,\n        videoTsToSeconds: videoTsToSeconds,\n        audioTsToSeconds: audioTsToSeconds,\n        audioTsToVideoTs: audioTsToVideoTs,\n        videoTsToAudioTs: videoTsToAudioTs,\n        metadataTsToSeconds: metadataTsToSeconds\n    };\n    var clock_1 = clock.ONE_SECOND_IN_TS;\n\n    /*! @name @videojs/http-streaming @version 3.0.2 @license Apache-2.0 */\n\n    /**\n     * @file resolve-url.js - Handling how URLs are resolved and manipulated\n     */\n    const resolveUrl = resolveUrl$2;\n    /**\n     * If the xhr request was redirected, return the responseURL, otherwise,\n     * return the original url.\n     *\n     * @api private\n     *\n     * @param  {string} url - an url being requested\n     * @param  {XMLHttpRequest} req - xhr request result\n     *\n     * @return {string}\n     */\n\n    const resolveManifestRedirect = (url, req) => {\n        // To understand how the responseURL below is set and generated:\n        // - https://fetch.spec.whatwg.org/#concept-response-url\n        // - https://fetch.spec.whatwg.org/#atomic-http-redirect-handling\n        if (req && req.responseURL && url !== req.responseURL) {\n            return req.responseURL;\n        }\n        return url;\n    };\n    const logger = source => {\n        if (videojs.log.debug) {\n            return videojs.log.debug.bind(videojs, 'VHS:', `${source} >`);\n        }\n        return function () {};\n    };\n\n    /**\n     * Provides a compatibility layer between Video.js 7 and 8 API changes for VHS.\n     */\n    /**\n     * Delegates to videojs.obj.merge (Video.js 8) or\n     * videojs.mergeOptions (Video.js 7).\n     */\n\n    function merge(...args) {\n        const context = videojs.obj || videojs;\n        const fn = context.merge || context.mergeOptions;\n        return fn.apply(context, args);\n    }\n    /**\n     * Delegates to videojs.time.createTimeRanges (Video.js 8) or\n     * videojs.createTimeRanges (Video.js 7).\n     */\n\n    function createTimeRanges(...args) {\n        const context = videojs.time || videojs;\n        const fn = context.createTimeRanges || context.createTimeRanges;\n        return fn.apply(context, args);\n    }\n\n    /**\n     * ranges\n     *\n     * Utilities for working with TimeRanges.\n     *\n     */\n\n    const TIME_FUDGE_FACTOR = 1 / 30; // Comparisons between time values such as current time and the end of the buffered range\n    // can be misleading because of precision differences or when the current media has poorly\n    // aligned audio and video, which can cause values to be slightly off from what you would\n    // expect. This value is what we consider to be safe to use in such comparisons to account\n    // for these scenarios.\n\n    const SAFE_TIME_DELTA = TIME_FUDGE_FACTOR * 3;\n    const filterRanges = function (timeRanges, predicate) {\n        const results = [];\n        let i;\n        if (timeRanges && timeRanges.length) {\n            // Search for ranges that match the predicate\n            for (i = 0; i < timeRanges.length; i++) {\n                if (predicate(timeRanges.start(i), timeRanges.end(i))) {\n                    results.push([timeRanges.start(i), timeRanges.end(i)]);\n                }\n            }\n        }\n        return createTimeRanges(results);\n    };\n    /**\n     * Attempts to find the buffered TimeRange that contains the specified\n     * time.\n     *\n     * @param {TimeRanges} buffered - the TimeRanges object to query\n     * @param {number} time  - the time to filter on.\n     * @return {TimeRanges} a new TimeRanges object\n     */\n\n    const findRange = function (buffered, time) {\n        return filterRanges(buffered, function (start, end) {\n            return start - SAFE_TIME_DELTA <= time && end + SAFE_TIME_DELTA >= time;\n        });\n    };\n    /**\n     * Returns the TimeRanges that begin later than the specified time.\n     *\n     * @param {TimeRanges} timeRanges - the TimeRanges object to query\n     * @param {number} time - the time to filter on.\n     * @return {TimeRanges} a new TimeRanges object.\n     */\n\n    const findNextRange = function (timeRanges, time) {\n        return filterRanges(timeRanges, function (start) {\n            return start - TIME_FUDGE_FACTOR >= time;\n        });\n    };\n    /**\n     * Returns gaps within a list of TimeRanges\n     *\n     * @param {TimeRanges} buffered - the TimeRanges object\n     * @return {TimeRanges} a TimeRanges object of gaps\n     */\n\n    const findGaps = function (buffered) {\n        if (buffered.length < 2) {\n            return createTimeRanges();\n        }\n        const ranges = [];\n        for (let i = 1; i < buffered.length; i++) {\n            const start = buffered.end(i - 1);\n            const end = buffered.start(i);\n            ranges.push([start, end]);\n        }\n        return createTimeRanges(ranges);\n    };\n    /**\n     * Calculate the intersection of two TimeRanges\n     *\n     * @param {TimeRanges} bufferA\n     * @param {TimeRanges} bufferB\n     * @return {TimeRanges} The interesection of `bufferA` with `bufferB`\n     */\n\n    const bufferIntersection = function (bufferA, bufferB) {\n        let start = null;\n        let end = null;\n        let arity = 0;\n        const extents = [];\n        const ranges = [];\n        if (!bufferA || !bufferA.length || !bufferB || !bufferB.length) {\n            return createTimeRanges();\n        } // Handle the case where we have both buffers and create an\n        // intersection of the two\n\n        let count = bufferA.length; // A) Gather up all start and end times\n\n        while (count--) {\n            extents.push({\n                time: bufferA.start(count),\n                type: 'start'\n            });\n            extents.push({\n                time: bufferA.end(count),\n                type: 'end'\n            });\n        }\n        count = bufferB.length;\n        while (count--) {\n            extents.push({\n                time: bufferB.start(count),\n                type: 'start'\n            });\n            extents.push({\n                time: bufferB.end(count),\n                type: 'end'\n            });\n        } // B) Sort them by time\n\n        extents.sort(function (a, b) {\n            return a.time - b.time;\n        }); // C) Go along one by one incrementing arity for start and decrementing\n        //    arity for ends\n\n        for (count = 0; count < extents.length; count++) {\n            if (extents[count].type === 'start') {\n                arity++; // D) If arity is ever incremented to 2 we are entering an\n                //    overlapping range\n\n                if (arity === 2) {\n                    start = extents[count].time;\n                }\n            } else if (extents[count].type === 'end') {\n                arity--; // E) If arity is ever decremented to 1 we leaving an\n                //    overlapping range\n\n                if (arity === 1) {\n                    end = extents[count].time;\n                }\n            } // F) Record overlapping ranges\n\n            if (start !== null && end !== null) {\n                ranges.push([start, end]);\n                start = null;\n                end = null;\n            }\n        }\n        return createTimeRanges(ranges);\n    };\n    /**\n     * Gets a human readable string for a TimeRange\n     *\n     * @param {TimeRange} range\n     * @return {string} a human readable string\n     */\n\n    const printableRange = range => {\n        const strArr = [];\n        if (!range || !range.length) {\n            return '';\n        }\n        for (let i = 0; i < range.length; i++) {\n            strArr.push(range.start(i) + ' => ' + range.end(i));\n        }\n        return strArr.join(', ');\n    };\n    /**\n     * Calculates the amount of time left in seconds until the player hits the end of the\n     * buffer and causes a rebuffer\n     *\n     * @param {TimeRange} buffered\n     *        The state of the buffer\n     * @param {Numnber} currentTime\n     *        The current time of the player\n     * @param {number} playbackRate\n     *        The current playback rate of the player. Defaults to 1.\n     * @return {number}\n     *         Time until the player has to start rebuffering in seconds.\n     * @function timeUntilRebuffer\n     */\n\n    const timeUntilRebuffer = function (buffered, currentTime, playbackRate = 1) {\n        const bufferedEnd = buffered.length ? buffered.end(buffered.length - 1) : 0;\n        return (bufferedEnd - currentTime) / playbackRate;\n    };\n    /**\n     * Converts a TimeRanges object into an array representation\n     *\n     * @param {TimeRanges} timeRanges\n     * @return {Array}\n     */\n\n    const timeRangesToArray = timeRanges => {\n        const timeRangesList = [];\n        for (let i = 0; i < timeRanges.length; i++) {\n            timeRangesList.push({\n                start: timeRanges.start(i),\n                end: timeRanges.end(i)\n            });\n        }\n        return timeRangesList;\n    };\n    /**\n     * Determines if two time range objects are different.\n     *\n     * @param {TimeRange} a\n     *        the first time range object to check\n     *\n     * @param {TimeRange} b\n     *        the second time range object to check\n     *\n     * @return {Boolean}\n     *         Whether the time range objects differ\n     */\n\n    const isRangeDifferent = function (a, b) {\n        // same object\n        if (a === b) {\n            return false;\n        } // one or the other is undefined\n\n        if (!a && b || !b && a) {\n            return true;\n        } // length is different\n\n        if (a.length !== b.length) {\n            return true;\n        } // see if any start/end pair is different\n\n        for (let i = 0; i < a.length; i++) {\n            if (a.start(i) !== b.start(i) || a.end(i) !== b.end(i)) {\n                return true;\n            }\n        } // if the length and every pair is the same\n        // this is the same time range\n\n        return false;\n    };\n    const lastBufferedEnd = function (a) {\n        if (!a || !a.length || !a.end) {\n            return;\n        }\n        return a.end(a.length - 1);\n    };\n    /**\n     * A utility function to add up the amount of time in a timeRange\n     * after a specified startTime.\n     * ie:[[0, 10], [20, 40], [50, 60]] with a startTime 0\n     *     would return 40 as there are 40s seconds after 0 in the timeRange\n     *\n     * @param {TimeRange} range\n     *        The range to check against\n     * @param {number} startTime\n     *        The time in the time range that you should start counting from\n     *\n     * @return {number}\n     *          The number of seconds in the buffer passed the specified time.\n     */\n\n    const timeAheadOf = function (range, startTime) {\n        let time = 0;\n        if (!range || !range.length) {\n            return time;\n        }\n        for (let i = 0; i < range.length; i++) {\n            const start = range.start(i);\n            const end = range.end(i); // startTime is after this range entirely\n\n            if (startTime > end) {\n                continue;\n            } // startTime is within this range\n\n            if (startTime > start && startTime <= end) {\n                time += end - startTime;\n                continue;\n            } // startTime is before this range.\n\n            time += end - start;\n        }\n        return time;\n    };\n\n    /**\n     * @file playlist.js\n     *\n     * Playlist related utilities.\n     */\n    /**\n     * Get the duration of a segment, with special cases for\n     * llhls segments that do not have a duration yet.\n     *\n     * @param {Object} playlist\n     *        the playlist that the segment belongs to.\n     * @param {Object} segment\n     *        the segment to get a duration for.\n     *\n     * @return {number}\n     *          the segment duration\n     */\n\n    const segmentDurationWithParts = (playlist, segment) => {\n        // if this isn't a preload segment\n        // then we will have a segment duration that is accurate.\n        if (!segment.preload) {\n            return segment.duration;\n        } // otherwise we have to add up parts and preload hints\n        // to get an up to date duration.\n\n        let result = 0;\n        (segment.parts || []).forEach(function (p) {\n            result += p.duration;\n        }); // for preload hints we have to use partTargetDuration\n        // as they won't even have a duration yet.\n\n        (segment.preloadHints || []).forEach(function (p) {\n            if (p.type === 'PART') {\n                result += playlist.partTargetDuration;\n            }\n        });\n        return result;\n    };\n    /**\n     * A function to get a combined list of parts and segments with durations\n     * and indexes.\n     *\n     * @param {Playlist} playlist the playlist to get the list for.\n     *\n     * @return {Array} The part/segment list.\n     */\n\n    const getPartsAndSegments = playlist => (playlist.segments || []).reduce((acc, segment, si) => {\n        if (segment.parts) {\n            segment.parts.forEach(function (part, pi) {\n                acc.push({\n                    duration: part.duration,\n                    segmentIndex: si,\n                    partIndex: pi,\n                    part,\n                    segment\n                });\n            });\n        } else {\n            acc.push({\n                duration: segment.duration,\n                segmentIndex: si,\n                partIndex: null,\n                segment,\n                part: null\n            });\n        }\n        return acc;\n    }, []);\n    const getLastParts = media => {\n        const lastSegment = media.segments && media.segments.length && media.segments[media.segments.length - 1];\n        return lastSegment && lastSegment.parts || [];\n    };\n    const getKnownPartCount = ({\n                                   preloadSegment\n                               }) => {\n        if (!preloadSegment) {\n            return;\n        }\n        const {\n            parts,\n            preloadHints\n        } = preloadSegment;\n        let partCount = (preloadHints || []).reduce((count, hint) => count + (hint.type === 'PART' ? 1 : 0), 0);\n        partCount += parts && parts.length ? parts.length : 0;\n        return partCount;\n    };\n    /**\n     * Get the number of seconds to delay from the end of a\n     * live playlist.\n     *\n     * @param {Playlist} main the main playlist\n     * @param {Playlist} media the media playlist\n     * @return {number} the hold back in seconds.\n     */\n\n    const liveEdgeDelay = (main, media) => {\n        if (media.endList) {\n            return 0;\n        } // dash suggestedPresentationDelay trumps everything\n\n        if (main && main.suggestedPresentationDelay) {\n            return main.suggestedPresentationDelay;\n        }\n        const hasParts = getLastParts(media).length > 0; // look for \"part\" delays from ll-hls first\n\n        if (hasParts && media.serverControl && media.serverControl.partHoldBack) {\n            return media.serverControl.partHoldBack;\n        } else if (hasParts && media.partTargetDuration) {\n            return media.partTargetDuration * 3; // finally look for full segment delays\n        } else if (media.serverControl && media.serverControl.holdBack) {\n            return media.serverControl.holdBack;\n        } else if (media.targetDuration) {\n            return media.targetDuration * 3;\n        }\n        return 0;\n    };\n    /**\n     * walk backward until we find a duration we can use\n     * or return a failure\n     *\n     * @param {Playlist} playlist the playlist to walk through\n     * @param {Number} endSequence the mediaSequence to stop walking on\n     */\n\n    const backwardDuration = function (playlist, endSequence) {\n        let result = 0;\n        let i = endSequence - playlist.mediaSequence; // if a start time is available for segment immediately following\n        // the interval, use it\n\n        let segment = playlist.segments[i]; // Walk backward until we find the latest segment with timeline\n        // information that is earlier than endSequence\n\n        if (segment) {\n            if (typeof segment.start !== 'undefined') {\n                return {\n                    result: segment.start,\n                    precise: true\n                };\n            }\n            if (typeof segment.end !== 'undefined') {\n                return {\n                    result: segment.end - segment.duration,\n                    precise: true\n                };\n            }\n        }\n        while (i--) {\n            segment = playlist.segments[i];\n            if (typeof segment.end !== 'undefined') {\n                return {\n                    result: result + segment.end,\n                    precise: true\n                };\n            }\n            result += segmentDurationWithParts(playlist, segment);\n            if (typeof segment.start !== 'undefined') {\n                return {\n                    result: result + segment.start,\n                    precise: true\n                };\n            }\n        }\n        return {\n            result,\n            precise: false\n        };\n    };\n    /**\n     * walk forward until we find a duration we can use\n     * or return a failure\n     *\n     * @param {Playlist} playlist the playlist to walk through\n     * @param {number} endSequence the mediaSequence to stop walking on\n     */\n\n    const forwardDuration = function (playlist, endSequence) {\n        let result = 0;\n        let segment;\n        let i = endSequence - playlist.mediaSequence; // Walk forward until we find the earliest segment with timeline\n        // information\n\n        for (; i < playlist.segments.length; i++) {\n            segment = playlist.segments[i];\n            if (typeof segment.start !== 'undefined') {\n                return {\n                    result: segment.start - result,\n                    precise: true\n                };\n            }\n            result += segmentDurationWithParts(playlist, segment);\n            if (typeof segment.end !== 'undefined') {\n                return {\n                    result: segment.end - result,\n                    precise: true\n                };\n            }\n        } // indicate we didn't find a useful duration estimate\n\n        return {\n            result: -1,\n            precise: false\n        };\n    };\n    /**\n     * Calculate the media duration from the segments associated with a\n     * playlist. The duration of a subinterval of the available segments\n     * may be calculated by specifying an end index.\n     *\n     * @param {Object} playlist a media playlist object\n     * @param {number=} endSequence an exclusive upper boundary\n     * for the playlist.  Defaults to playlist length.\n     * @param {number} expired the amount of time that has dropped\n     * off the front of the playlist in a live scenario\n     * @return {number} the duration between the first available segment\n     * and end index.\n     */\n\n    const intervalDuration = function (playlist, endSequence, expired) {\n        if (typeof endSequence === 'undefined') {\n            endSequence = playlist.mediaSequence + playlist.segments.length;\n        }\n        if (endSequence < playlist.mediaSequence) {\n            return 0;\n        } // do a backward walk to estimate the duration\n\n        const backward = backwardDuration(playlist, endSequence);\n        if (backward.precise) {\n            // if we were able to base our duration estimate on timing\n            // information provided directly from the Media Source, return\n            // it\n            return backward.result;\n        } // walk forward to see if a precise duration estimate can be made\n        // that way\n\n        const forward = forwardDuration(playlist, endSequence);\n        if (forward.precise) {\n            // we found a segment that has been buffered and so it's\n            // position is known precisely\n            return forward.result;\n        } // return the less-precise, playlist-based duration estimate\n\n        return backward.result + expired;\n    };\n    /**\n     * Calculates the duration of a playlist. If a start and end index\n     * are specified, the duration will be for the subset of the media\n     * timeline between those two indices. The total duration for live\n     * playlists is always Infinity.\n     *\n     * @param {Object} playlist a media playlist object\n     * @param {number=} endSequence an exclusive upper\n     * boundary for the playlist. Defaults to the playlist media\n     * sequence number plus its length.\n     * @param {number=} expired the amount of time that has\n     * dropped off the front of the playlist in a live scenario\n     * @return {number} the duration between the start index and end\n     * index.\n     */\n\n    const duration = function (playlist, endSequence, expired) {\n        if (!playlist) {\n            return 0;\n        }\n        if (typeof expired !== 'number') {\n            expired = 0;\n        } // if a slice of the total duration is not requested, use\n        // playlist-level duration indicators when they're present\n\n        if (typeof endSequence === 'undefined') {\n            // if present, use the duration specified in the playlist\n            if (playlist.totalDuration) {\n                return playlist.totalDuration;\n            } // duration should be Infinity for live playlists\n\n            if (!playlist.endList) {\n                return window.Infinity;\n            }\n        } // calculate the total duration based on the segment durations\n\n        return intervalDuration(playlist, endSequence, expired);\n    };\n    /**\n     * Calculate the time between two indexes in the current playlist\n     * neight the start- nor the end-index need to be within the current\n     * playlist in which case, the targetDuration of the playlist is used\n     * to approximate the durations of the segments\n     *\n     * @param {Array} options.durationList list to iterate over for durations.\n     * @param {number} options.defaultDuration duration to use for elements before or after the durationList\n     * @param {number} options.startIndex partsAndSegments index to start\n     * @param {number} options.endIndex partsAndSegments index to end.\n     * @return {number} the number of seconds between startIndex and endIndex\n     */\n\n    const sumDurations = function ({\n                                       defaultDuration,\n                                       durationList,\n                                       startIndex,\n                                       endIndex\n                                   }) {\n        let durations = 0;\n        if (startIndex > endIndex) {\n            [startIndex, endIndex] = [endIndex, startIndex];\n        }\n        if (startIndex < 0) {\n            for (let i = startIndex; i < Math.min(0, endIndex); i++) {\n                durations += defaultDuration;\n            }\n            startIndex = 0;\n        }\n        for (let i = startIndex; i < endIndex; i++) {\n            durations += durationList[i].duration;\n        }\n        return durations;\n    };\n    /**\n     * Calculates the playlist end time\n     *\n     * @param {Object} playlist a media playlist object\n     * @param {number=} expired the amount of time that has\n     *                  dropped off the front of the playlist in a live scenario\n     * @param {boolean|false} useSafeLiveEnd a boolean value indicating whether or not the\n     *                        playlist end calculation should consider the safe live end\n     *                        (truncate the playlist end by three segments). This is normally\n     *                        used for calculating the end of the playlist's seekable range.\n     *                        This takes into account the value of liveEdgePadding.\n     *                        Setting liveEdgePadding to 0 is equivalent to setting this to false.\n     * @param {number} liveEdgePadding a number indicating how far from the end of the playlist we should be in seconds.\n     *                 If this is provided, it is used in the safe live end calculation.\n     *                 Setting useSafeLiveEnd=false or liveEdgePadding=0 are equivalent.\n     *                 Corresponds to suggestedPresentationDelay in DASH manifests.\n     * @return {number} the end time of playlist\n     * @function playlistEnd\n     */\n\n    const playlistEnd = function (playlist, expired, useSafeLiveEnd, liveEdgePadding) {\n        if (!playlist || !playlist.segments) {\n            return null;\n        }\n        if (playlist.endList) {\n            return duration(playlist);\n        }\n        if (expired === null) {\n            return null;\n        }\n        expired = expired || 0;\n        let lastSegmentEndTime = intervalDuration(playlist, playlist.mediaSequence + playlist.segments.length, expired);\n        if (useSafeLiveEnd) {\n            liveEdgePadding = typeof liveEdgePadding === 'number' ? liveEdgePadding : liveEdgeDelay(null, playlist);\n            lastSegmentEndTime -= liveEdgePadding;\n        } // don't return a time less than zero\n\n        return Math.max(0, lastSegmentEndTime);\n    };\n    /**\n     * Calculates the interval of time that is currently seekable in a\n     * playlist. The returned time ranges are relative to the earliest\n     * moment in the specified playlist that is still available. A full\n     * seekable implementation for live streams would need to offset\n     * these values by the duration of content that has expired from the\n     * stream.\n     *\n     * @param {Object} playlist a media playlist object\n     * dropped off the front of the playlist in a live scenario\n     * @param {number=} expired the amount of time that has\n     * dropped off the front of the playlist in a live scenario\n     * @param {number} liveEdgePadding how far from the end of the playlist we should be in seconds.\n     *        Corresponds to suggestedPresentationDelay in DASH manifests.\n     * @return {TimeRanges} the periods of time that are valid targets\n     * for seeking\n     */\n\n    const seekable = function (playlist, expired, liveEdgePadding) {\n        const useSafeLiveEnd = true;\n        const seekableStart = expired || 0;\n        const seekableEnd = playlistEnd(playlist, expired, useSafeLiveEnd, liveEdgePadding);\n        if (seekableEnd === null) {\n            return createTimeRanges();\n        }\n        return createTimeRanges(seekableStart, seekableEnd);\n    };\n    /**\n     * Determine the index and estimated starting time of the segment that\n     * contains a specified playback position in a media playlist.\n     *\n     * @param {Object} options.playlist the media playlist to query\n     * @param {number} options.currentTime The number of seconds since the earliest\n     * possible position to determine the containing segment for\n     * @param {number} options.startTime the time when the segment/part starts\n     * @param {number} options.startingSegmentIndex the segment index to start looking at.\n     * @param {number?} [options.startingPartIndex] the part index to look at within the segment.\n     *\n     * @return {Object} an object with partIndex, segmentIndex, and startTime.\n     */\n\n    const getMediaInfoForTime = function ({\n                                              playlist,\n                                              currentTime,\n                                              startingSegmentIndex,\n                                              startingPartIndex,\n                                              startTime,\n                                              exactManifestTimings\n                                          }) {\n        let time = currentTime - startTime;\n        const partsAndSegments = getPartsAndSegments(playlist);\n        let startIndex = 0;\n        for (let i = 0; i < partsAndSegments.length; i++) {\n            const partAndSegment = partsAndSegments[i];\n            if (startingSegmentIndex !== partAndSegment.segmentIndex) {\n                continue;\n            } // skip this if part index does not match.\n\n            if (typeof startingPartIndex === 'number' && typeof partAndSegment.partIndex === 'number' && startingPartIndex !== partAndSegment.partIndex) {\n                continue;\n            }\n            startIndex = i;\n            break;\n        }\n        if (time < 0) {\n            // Walk backward from startIndex in the playlist, adding durations\n            // until we find a segment that contains `time` and return it\n            if (startIndex > 0) {\n                for (let i = startIndex - 1; i >= 0; i--) {\n                    const partAndSegment = partsAndSegments[i];\n                    time += partAndSegment.duration;\n                    if (exactManifestTimings) {\n                        if (time < 0) {\n                            continue;\n                        }\n                    } else if (time + TIME_FUDGE_FACTOR <= 0) {\n                        continue;\n                    }\n                    return {\n                        partIndex: partAndSegment.partIndex,\n                        segmentIndex: partAndSegment.segmentIndex,\n                        startTime: startTime - sumDurations({\n                            defaultDuration: playlist.targetDuration,\n                            durationList: partsAndSegments,\n                            startIndex,\n                            endIndex: i\n                        })\n                    };\n                }\n            } // We were unable to find a good segment within the playlist\n            // so select the first segment\n\n            return {\n                partIndex: partsAndSegments[0] && partsAndSegments[0].partIndex || null,\n                segmentIndex: partsAndSegments[0] && partsAndSegments[0].segmentIndex || 0,\n                startTime: currentTime\n            };\n        } // When startIndex is negative, we first walk forward to first segment\n        // adding target durations. If we \"run out of time\" before getting to\n        // the first segment, return the first segment\n\n        if (startIndex < 0) {\n            for (let i = startIndex; i < 0; i++) {\n                time -= playlist.targetDuration;\n                if (time < 0) {\n                    return {\n                        partIndex: partsAndSegments[0] && partsAndSegments[0].partIndex || null,\n                        segmentIndex: partsAndSegments[0] && partsAndSegments[0].segmentIndex || 0,\n                        startTime: currentTime\n                    };\n                }\n            }\n            startIndex = 0;\n        } // Walk forward from startIndex in the playlist, subtracting durations\n        // until we find a segment that contains `time` and return it\n\n        for (let i = startIndex; i < partsAndSegments.length; i++) {\n            const partAndSegment = partsAndSegments[i];\n            time -= partAndSegment.duration;\n            if (exactManifestTimings) {\n                if (time > 0) {\n                    continue;\n                }\n            } else if (time - TIME_FUDGE_FACTOR >= 0) {\n                continue;\n            }\n            return {\n                partIndex: partAndSegment.partIndex,\n                segmentIndex: partAndSegment.segmentIndex,\n                startTime: startTime + sumDurations({\n                    defaultDuration: playlist.targetDuration,\n                    durationList: partsAndSegments,\n                    startIndex,\n                    endIndex: i\n                })\n            };\n        } // We are out of possible candidates so load the last one...\n\n        return {\n            segmentIndex: partsAndSegments[partsAndSegments.length - 1].segmentIndex,\n            partIndex: partsAndSegments[partsAndSegments.length - 1].partIndex,\n            startTime: currentTime\n        };\n    };\n    /**\n     * Check whether the playlist is excluded or not.\n     *\n     * @param {Object} playlist the media playlist object\n     * @return {boolean} whether the playlist is excluded or not\n     * @function isExcluded\n     */\n\n    const isExcluded = function (playlist) {\n        return playlist.excludeUntil && playlist.excludeUntil > Date.now();\n    };\n    /**\n     * Check whether the playlist is compatible with current playback configuration or has\n     * been excluded permanently for being incompatible.\n     *\n     * @param {Object} playlist the media playlist object\n     * @return {boolean} whether the playlist is incompatible or not\n     * @function isIncompatible\n     */\n\n    const isIncompatible = function (playlist) {\n        return playlist.excludeUntil && playlist.excludeUntil === Infinity;\n    };\n    /**\n     * Check whether the playlist is enabled or not.\n     *\n     * @param {Object} playlist the media playlist object\n     * @return {boolean} whether the playlist is enabled or not\n     * @function isEnabled\n     */\n\n    const isEnabled = function (playlist) {\n        const excluded = isExcluded(playlist);\n        return !playlist.disabled && !excluded;\n    };\n    /**\n     * Check whether the playlist has been manually disabled through the representations api.\n     *\n     * @param {Object} playlist the media playlist object\n     * @return {boolean} whether the playlist is disabled manually or not\n     * @function isDisabled\n     */\n\n    const isDisabled = function (playlist) {\n        return playlist.disabled;\n    };\n    /**\n     * Returns whether the current playlist is an AES encrypted HLS stream\n     *\n     * @return {boolean} true if it's an AES encrypted HLS stream\n     */\n\n    const isAes = function (media) {\n        for (let i = 0; i < media.segments.length; i++) {\n            if (media.segments[i].key) {\n                return true;\n            }\n        }\n        return false;\n    };\n    /**\n     * Checks if the playlist has a value for the specified attribute\n     *\n     * @param {string} attr\n     *        Attribute to check for\n     * @param {Object} playlist\n     *        The media playlist object\n     * @return {boolean}\n     *         Whether the playlist contains a value for the attribute or not\n     * @function hasAttribute\n     */\n\n    const hasAttribute = function (attr, playlist) {\n        return playlist.attributes && playlist.attributes[attr];\n    };\n    /**\n     * Estimates the time required to complete a segment download from the specified playlist\n     *\n     * @param {number} segmentDuration\n     *        Duration of requested segment\n     * @param {number} bandwidth\n     *        Current measured bandwidth of the player\n     * @param {Object} playlist\n     *        The media playlist object\n     * @param {number=} bytesReceived\n     *        Number of bytes already received for the request. Defaults to 0\n     * @return {number|NaN}\n     *         The estimated time to request the segment. NaN if bandwidth information for\n     *         the given playlist is unavailable\n     * @function estimateSegmentRequestTime\n     */\n\n    const estimateSegmentRequestTime = function (segmentDuration, bandwidth, playlist, bytesReceived = 0) {\n        if (!hasAttribute('BANDWIDTH', playlist)) {\n            return NaN;\n        }\n        const size = segmentDuration * playlist.attributes.BANDWIDTH;\n        return (size - bytesReceived * 8) / bandwidth;\n    };\n    /*\n   * Returns whether the current playlist is the lowest rendition\n   *\n   * @return {Boolean} true if on lowest rendition\n   */\n\n    const isLowestEnabledRendition = (main, media) => {\n        if (main.playlists.length === 1) {\n            return true;\n        }\n        const currentBandwidth = media.attributes.BANDWIDTH || Number.MAX_VALUE;\n        return main.playlists.filter(playlist => {\n            if (!isEnabled(playlist)) {\n                return false;\n            }\n            return (playlist.attributes.BANDWIDTH || 0) < currentBandwidth;\n        }).length === 0;\n    };\n    const playlistMatch = (a, b) => {\n        // both playlits are null\n        // or only one playlist is non-null\n        // no match\n        if (!a && !b || !a && b || a && !b) {\n            return false;\n        } // playlist objects are the same, match\n\n        if (a === b) {\n            return true;\n        } // first try to use id as it should be the most\n        // accurate\n\n        if (a.id && b.id && a.id === b.id) {\n            return true;\n        } // next try to use reslovedUri as it should be the\n        // second most accurate.\n\n        if (a.resolvedUri && b.resolvedUri && a.resolvedUri === b.resolvedUri) {\n            return true;\n        } // finally try to use uri as it should be accurate\n        // but might miss a few cases for relative uris\n\n        if (a.uri && b.uri && a.uri === b.uri) {\n            return true;\n        }\n        return false;\n    };\n    const someAudioVariant = function (main, callback) {\n        const AUDIO = main && main.mediaGroups && main.mediaGroups.AUDIO || {};\n        let found = false;\n        for (const groupName in AUDIO) {\n            for (const label in AUDIO[groupName]) {\n                found = callback(AUDIO[groupName][label]);\n                if (found) {\n                    break;\n                }\n            }\n            if (found) {\n                break;\n            }\n        }\n        return !!found;\n    };\n    const isAudioOnly = main => {\n        // we are audio only if we have no main playlists but do\n        // have media group playlists.\n        if (!main || !main.playlists || !main.playlists.length) {\n            // without audio variants or playlists this\n            // is not an audio only main.\n            const found = someAudioVariant(main, variant => variant.playlists && variant.playlists.length || variant.uri);\n            return found;\n        } // if every playlist has only an audio codec it is audio only\n\n        for (let i = 0; i < main.playlists.length; i++) {\n            const playlist = main.playlists[i];\n            const CODECS = playlist.attributes && playlist.attributes.CODECS; // all codecs are audio, this is an audio playlist.\n\n            if (CODECS && CODECS.split(',').every(c => isAudioCodec(c))) {\n                continue;\n            } // playlist is in an audio group it is audio only\n\n            const found = someAudioVariant(main, variant => playlistMatch(playlist, variant));\n            if (found) {\n                continue;\n            } // if we make it here this playlist isn't audio and we\n            // are not audio only\n\n            return false;\n        } // if we make it past every playlist without returning, then\n        // this is an audio only playlist.\n\n        return true;\n    }; // exports\n\n    var Playlist = {\n        liveEdgeDelay,\n        duration,\n        seekable,\n        getMediaInfoForTime,\n        isEnabled,\n        isDisabled,\n        isExcluded,\n        isIncompatible,\n        playlistEnd,\n        isAes,\n        hasAttribute,\n        estimateSegmentRequestTime,\n        isLowestEnabledRendition,\n        isAudioOnly,\n        playlistMatch,\n        segmentDurationWithParts\n    };\n    const {\n        log\n    } = videojs;\n    const createPlaylistID = (index, uri) => {\n        return `${index}-${uri}`;\n    }; // default function for creating a group id\n\n    const groupID = (type, group, label) => {\n        return `placeholder-uri-${type}-${group}-${label}`;\n    };\n    /**\n     * Parses a given m3u8 playlist\n     *\n     * @param {Function} [onwarn]\n     *        a function to call when the parser triggers a warning event.\n     * @param {Function} [oninfo]\n     *        a function to call when the parser triggers an info event.\n     * @param {string} manifestString\n     *        The downloaded manifest string\n     * @param {Object[]} [customTagParsers]\n     *        An array of custom tag parsers for the m3u8-parser instance\n     * @param {Object[]} [customTagMappers]\n     *        An array of custom tag mappers for the m3u8-parser instance\n     * @param {boolean} [llhls]\n     *        Whether to keep ll-hls features in the manifest after parsing.\n     * @return {Object}\n     *         The manifest object\n     */\n\n    const parseManifest = ({\n                               onwarn,\n                               oninfo,\n                               manifestString,\n                               customTagParsers = [],\n                               customTagMappers = [],\n                               llhls\n                           }) => {\n        const parser = new Parser();\n        if (onwarn) {\n            parser.on('warn', onwarn);\n        }\n        if (oninfo) {\n            parser.on('info', oninfo);\n        }\n        customTagParsers.forEach(customParser => parser.addParser(customParser));\n        customTagMappers.forEach(mapper => parser.addTagMapper(mapper));\n        parser.push(manifestString);\n        parser.end();\n        const manifest = parser.manifest; // remove llhls features from the parsed manifest\n        // if we don't want llhls support.\n\n        if (!llhls) {\n            ['preloadSegment', 'skip', 'serverControl', 'renditionReports', 'partInf', 'partTargetDuration'].forEach(function (k) {\n                if (manifest.hasOwnProperty(k)) {\n                    delete manifest[k];\n                }\n            });\n            if (manifest.segments) {\n                manifest.segments.forEach(function (segment) {\n                    ['parts', 'preloadHints'].forEach(function (k) {\n                        if (segment.hasOwnProperty(k)) {\n                            delete segment[k];\n                        }\n                    });\n                });\n            }\n        }\n        if (!manifest.targetDuration) {\n            let targetDuration = 10;\n            if (manifest.segments && manifest.segments.length) {\n                targetDuration = manifest.segments.reduce((acc, s) => Math.max(acc, s.duration), 0);\n            }\n            if (onwarn) {\n                onwarn(`manifest has no targetDuration defaulting to ${targetDuration}`);\n            }\n            manifest.targetDuration = targetDuration;\n        }\n        const parts = getLastParts(manifest);\n        if (parts.length && !manifest.partTargetDuration) {\n            const partTargetDuration = parts.reduce((acc, p) => Math.max(acc, p.duration), 0);\n            if (onwarn) {\n                onwarn(`manifest has no partTargetDuration defaulting to ${partTargetDuration}`);\n                log.error('LL-HLS manifest has parts but lacks required #EXT-X-PART-INF:PART-TARGET value. See https://datatracker.ietf.org/doc/html/draft-pantos-hls-rfc8216bis-09#section-4.4.3.7. Playback is not guaranteed.');\n            }\n            manifest.partTargetDuration = partTargetDuration;\n        }\n        return manifest;\n    };\n    /**\n     * Loops through all supported media groups in main and calls the provided\n     * callback for each group\n     *\n     * @param {Object} main\n     *        The parsed main manifest object\n     * @param {Function} callback\n     *        Callback to call for each media group\n     */\n\n    const forEachMediaGroup = (main, callback) => {\n        if (!main.mediaGroups) {\n            return;\n        }\n        ['AUDIO', 'SUBTITLES'].forEach(mediaType => {\n            if (!main.mediaGroups[mediaType]) {\n                return;\n            }\n            for (const groupKey in main.mediaGroups[mediaType]) {\n                for (const labelKey in main.mediaGroups[mediaType][groupKey]) {\n                    const mediaProperties = main.mediaGroups[mediaType][groupKey][labelKey];\n                    callback(mediaProperties, mediaType, groupKey, labelKey);\n                }\n            }\n        });\n    };\n    /**\n     * Adds properties and attributes to the playlist to keep consistent functionality for\n     * playlists throughout VHS.\n     *\n     * @param {Object} config\n     *        Arguments object\n     * @param {Object} config.playlist\n     *        The media playlist\n     * @param {string} [config.uri]\n     *        The uri to the media playlist (if media playlist is not from within a main\n     *        playlist)\n     * @param {string} id\n     *        ID to use for the playlist\n     */\n\n    const setupMediaPlaylist = ({\n                                    playlist,\n                                    uri,\n                                    id\n                                }) => {\n        playlist.id = id;\n        playlist.playlistErrors_ = 0;\n        if (uri) {\n            // For media playlists, m3u8-parser does not have access to a URI, as HLS media\n            // playlists do not contain their own source URI, but one is needed for consistency in\n            // VHS.\n            playlist.uri = uri;\n        } // For HLS main playlists, even though certain attributes MUST be defined, the\n        // stream may still be played without them.\n        // For HLS media playlists, m3u8-parser does not attach an attributes object to the\n        // manifest.\n        //\n        // To avoid undefined reference errors through the project, and make the code easier\n        // to write/read, add an empty attributes object for these cases.\n\n        playlist.attributes = playlist.attributes || {};\n    };\n    /**\n     * Adds ID, resolvedUri, and attributes properties to each playlist of the main, where\n     * necessary. In addition, creates playlist IDs for each playlist and adds playlist ID to\n     * playlist references to the playlists array.\n     *\n     * @param {Object} main\n     *        The main playlist\n     */\n\n    const setupMediaPlaylists = main => {\n        let i = main.playlists.length;\n        while (i--) {\n            const playlist = main.playlists[i];\n            setupMediaPlaylist({\n                playlist,\n                id: createPlaylistID(i, playlist.uri)\n            });\n            playlist.resolvedUri = resolveUrl(main.uri, playlist.uri);\n            main.playlists[playlist.id] = playlist; // URI reference added for backwards compatibility\n\n            main.playlists[playlist.uri] = playlist; // Although the spec states an #EXT-X-STREAM-INF tag MUST have a BANDWIDTH attribute,\n            // the stream can be played without it. Although an attributes property may have been\n            // added to the playlist to prevent undefined references, issue a warning to fix the\n            // manifest.\n\n            if (!playlist.attributes.BANDWIDTH) {\n                log.warn('Invalid playlist STREAM-INF detected. Missing BANDWIDTH attribute.');\n            }\n        }\n    };\n    /**\n     * Adds resolvedUri properties to each media group.\n     *\n     * @param {Object} main\n     *        The main playlist\n     */\n\n    const resolveMediaGroupUris = main => {\n        forEachMediaGroup(main, properties => {\n            if (properties.uri) {\n                properties.resolvedUri = resolveUrl(main.uri, properties.uri);\n            }\n        });\n    };\n    /**\n     * Creates a main playlist wrapper to insert a sole media playlist into.\n     *\n     * @param {Object} media\n     *        Media playlist\n     * @param {string} uri\n     *        The media URI\n     *\n     * @return {Object}\n     *         main playlist\n     */\n\n    const mainForMedia = (media, uri) => {\n        const id = createPlaylistID(0, uri);\n        const main = {\n            mediaGroups: {\n                'AUDIO': {},\n                'VIDEO': {},\n                'CLOSED-CAPTIONS': {},\n                'SUBTITLES': {}\n            },\n            uri: window.location.href,\n            resolvedUri: window.location.href,\n            playlists: [{\n                uri,\n                id,\n                resolvedUri: uri,\n                // m3u8-parser does not attach an attributes property to media playlists so make\n                // sure that the property is attached to avoid undefined reference errors\n                attributes: {}\n            }]\n        }; // set up ID reference\n\n        main.playlists[id] = main.playlists[0]; // URI reference added for backwards compatibility\n\n        main.playlists[uri] = main.playlists[0];\n        return main;\n    };\n    /**\n     * Does an in-place update of the main manifest to add updated playlist URI references\n     * as well as other properties needed by VHS that aren't included by the parser.\n     *\n     * @param {Object} main\n     *        main manifest object\n     * @param {string} uri\n     *        The source URI\n     * @param {function} createGroupID\n     *        A function to determine how to create the groupID for mediaGroups\n     */\n\n    const addPropertiesToMain = (main, uri, createGroupID = groupID) => {\n        main.uri = uri;\n        for (let i = 0; i < main.playlists.length; i++) {\n            if (!main.playlists[i].uri) {\n                // Set up phony URIs for the playlists since playlists are referenced by their URIs\n                // throughout VHS, but some formats (e.g., DASH) don't have external URIs\n                // TODO: consider adding dummy URIs in mpd-parser\n                const phonyUri = `placeholder-uri-${i}`;\n                main.playlists[i].uri = phonyUri;\n            }\n        }\n        const audioOnlyMain = isAudioOnly(main);\n        forEachMediaGroup(main, (properties, mediaType, groupKey, labelKey) => {\n            // add a playlist array under properties\n            if (!properties.playlists || !properties.playlists.length) {\n                // If the manifest is audio only and this media group does not have a uri, check\n                // if the media group is located in the main list of playlists. If it is, don't add\n                // placeholder properties as it shouldn't be considered an alternate audio track.\n                if (audioOnlyMain && mediaType === 'AUDIO' && !properties.uri) {\n                    for (let i = 0; i < main.playlists.length; i++) {\n                        const p = main.playlists[i];\n                        if (p.attributes && p.attributes.AUDIO && p.attributes.AUDIO === groupKey) {\n                            return;\n                        }\n                    }\n                }\n                properties.playlists = [_extends$1({}, properties)];\n            }\n            properties.playlists.forEach(function (p, i) {\n                const groupId = createGroupID(mediaType, groupKey, labelKey, p);\n                const id = createPlaylistID(i, groupId);\n                if (p.uri) {\n                    p.resolvedUri = p.resolvedUri || resolveUrl(main.uri, p.uri);\n                } else {\n                    // DEPRECATED, this has been added to prevent a breaking change.\n                    // previously we only ever had a single media group playlist, so\n                    // we mark the first playlist uri without prepending the index as we used to\n                    // ideally we would do all of the playlists the same way.\n                    p.uri = i === 0 ? groupId : id; // don't resolve a placeholder uri to an absolute url, just use\n                    // the placeholder again\n\n                    p.resolvedUri = p.uri;\n                }\n                p.id = p.id || id; // add an empty attributes object, all playlists are\n                // expected to have this.\n\n                p.attributes = p.attributes || {}; // setup ID and URI references (URI for backwards compatibility)\n\n                main.playlists[p.id] = p;\n                main.playlists[p.uri] = p;\n            });\n        });\n        setupMediaPlaylists(main);\n        resolveMediaGroupUris(main);\n    };\n\n    /**\n     * @file playlist-loader.js\n     *\n     * A state machine that manages the loading, caching, and updating of\n     * M3U8 playlists.\n     *\n     */\n    const {\n        EventTarget: EventTarget$1\n    } = videojs;\n    const addLLHLSQueryDirectives = (uri, media) => {\n        if (media.endList || !media.serverControl) {\n            return uri;\n        }\n        const parameters = {};\n        if (media.serverControl.canBlockReload) {\n            const {\n                preloadSegment\n            } = media; // next msn is a zero based value, length is not.\n\n            let nextMSN = media.mediaSequence + media.segments.length; // If preload segment has parts then it is likely\n            // that we are going to request a part of that preload segment.\n            // the logic below is used to determine that.\n\n            if (preloadSegment) {\n                const parts = preloadSegment.parts || []; // _HLS_part is a zero based index\n\n                const nextPart = getKnownPartCount(media) - 1; // if nextPart is > -1 and not equal to just the\n                // length of parts, then we know we had part preload hints\n                // and we need to add the _HLS_part= query\n\n                if (nextPart > -1 && nextPart !== parts.length - 1) {\n                    // add existing parts to our preload hints\n                    // eslint-disable-next-line\n                    parameters._HLS_part = nextPart;\n                } // this if statement makes sure that we request the msn\n                // of the preload segment if:\n                // 1. the preload segment had parts (and was not yet a full segment)\n                //    but was added to our segments array\n                // 2. the preload segment had preload hints for parts that are not in\n                //    the manifest yet.\n                // in all other cases we want the segment after the preload segment\n                // which will be given by using media.segments.length because it is 1 based\n                // rather than 0 based.\n\n                if (nextPart > -1 || parts.length) {\n                    nextMSN--;\n                }\n            } // add _HLS_msn= in front of any _HLS_part query\n            // eslint-disable-next-line\n\n            parameters._HLS_msn = nextMSN;\n        }\n        if (media.serverControl && media.serverControl.canSkipUntil) {\n            // add _HLS_skip= infront of all other queries.\n            // eslint-disable-next-line\n            parameters._HLS_skip = media.serverControl.canSkipDateranges ? 'v2' : 'YES';\n        }\n        if (Object.keys(parameters).length) {\n            const parsedUri = new window.URL(uri);\n            ['_HLS_skip', '_HLS_msn', '_HLS_part'].forEach(function (name) {\n                if (!parameters.hasOwnProperty(name)) {\n                    return;\n                }\n                parsedUri.searchParams.set(name, parameters[name]);\n            });\n            uri = parsedUri.toString();\n        }\n        return uri;\n    };\n    /**\n     * Returns a new segment object with properties and\n     * the parts array merged.\n     *\n     * @param {Object} a the old segment\n     * @param {Object} b the new segment\n     *\n     * @return {Object} the merged segment\n     */\n\n    const updateSegment = (a, b) => {\n        if (!a) {\n            return b;\n        }\n        const result = merge(a, b); // if only the old segment has preload hints\n        // and the new one does not, remove preload hints.\n\n        if (a.preloadHints && !b.preloadHints) {\n            delete result.preloadHints;\n        } // if only the old segment has parts\n        // then the parts are no longer valid\n\n        if (a.parts && !b.parts) {\n            delete result.parts; // if both segments have parts\n            // copy part propeties from the old segment\n            // to the new one.\n        } else if (a.parts && b.parts) {\n            for (let i = 0; i < b.parts.length; i++) {\n                if (a.parts && a.parts[i]) {\n                    result.parts[i] = merge(a.parts[i], b.parts[i]);\n                }\n            }\n        } // set skipped to false for segments that have\n        // have had information merged from the old segment.\n\n        if (!a.skipped && b.skipped) {\n            result.skipped = false;\n        } // set preload to false for segments that have\n        // had information added in the new segment.\n\n        if (a.preload && !b.preload) {\n            result.preload = false;\n        }\n        return result;\n    };\n    /**\n     * Returns a new array of segments that is the result of merging\n     * properties from an older list of segments onto an updated\n     * list. No properties on the updated playlist will be ovewritten.\n     *\n     * @param {Array} original the outdated list of segments\n     * @param {Array} update the updated list of segments\n     * @param {number=} offset the index of the first update\n     * segment in the original segment list. For non-live playlists,\n     * this should always be zero and does not need to be\n     * specified. For live playlists, it should be the difference\n     * between the media sequence numbers in the original and updated\n     * playlists.\n     * @return {Array} a list of merged segment objects\n     */\n\n    const updateSegments = (original, update, offset) => {\n        const oldSegments = original.slice();\n        const newSegments = update.slice();\n        offset = offset || 0;\n        const result = [];\n        let currentMap;\n        for (let newIndex = 0; newIndex < newSegments.length; newIndex++) {\n            const oldSegment = oldSegments[newIndex + offset];\n            const newSegment = newSegments[newIndex];\n            if (oldSegment) {\n                currentMap = oldSegment.map || currentMap;\n                result.push(updateSegment(oldSegment, newSegment));\n            } else {\n                // carry over map to new segment if it is missing\n                if (currentMap && !newSegment.map) {\n                    newSegment.map = currentMap;\n                }\n                result.push(newSegment);\n            }\n        }\n        return result;\n    };\n    const resolveSegmentUris = (segment, baseUri) => {\n        // preloadSegment will not have a uri at all\n        // as the segment isn't actually in the manifest yet, only parts\n        if (!segment.resolvedUri && segment.uri) {\n            segment.resolvedUri = resolveUrl(baseUri, segment.uri);\n        }\n        if (segment.key && !segment.key.resolvedUri) {\n            segment.key.resolvedUri = resolveUrl(baseUri, segment.key.uri);\n        }\n        if (segment.map && !segment.map.resolvedUri) {\n            segment.map.resolvedUri = resolveUrl(baseUri, segment.map.uri);\n        }\n        if (segment.map && segment.map.key && !segment.map.key.resolvedUri) {\n            segment.map.key.resolvedUri = resolveUrl(baseUri, segment.map.key.uri);\n        }\n        if (segment.parts && segment.parts.length) {\n            segment.parts.forEach(p => {\n                if (p.resolvedUri) {\n                    return;\n                }\n                p.resolvedUri = resolveUrl(baseUri, p.uri);\n            });\n        }\n        if (segment.preloadHints && segment.preloadHints.length) {\n            segment.preloadHints.forEach(p => {\n                if (p.resolvedUri) {\n                    return;\n                }\n                p.resolvedUri = resolveUrl(baseUri, p.uri);\n            });\n        }\n    };\n    const getAllSegments = function (media) {\n        const segments = media.segments || [];\n        const preloadSegment = media.preloadSegment; // a preloadSegment with only preloadHints is not currently\n        // a usable segment, only include a preloadSegment that has\n        // parts.\n\n        if (preloadSegment && preloadSegment.parts && preloadSegment.parts.length) {\n            // if preloadHints has a MAP that means that the\n            // init segment is going to change. We cannot use any of the parts\n            // from this preload segment.\n            if (preloadSegment.preloadHints) {\n                for (let i = 0; i < preloadSegment.preloadHints.length; i++) {\n                    if (preloadSegment.preloadHints[i].type === 'MAP') {\n                        return segments;\n                    }\n                }\n            } // set the duration for our preload segment to target duration.\n\n            preloadSegment.duration = media.targetDuration;\n            preloadSegment.preload = true;\n            segments.push(preloadSegment);\n        }\n        return segments;\n    }; // consider the playlist unchanged if the playlist object is the same or\n    // the number of segments is equal, the media sequence number is unchanged,\n    // and this playlist hasn't become the end of the playlist\n\n    const isPlaylistUnchanged = (a, b) => a === b || a.segments && b.segments && a.segments.length === b.segments.length && a.endList === b.endList && a.mediaSequence === b.mediaSequence && a.preloadSegment === b.preloadSegment;\n    /**\n     * Returns a new main playlist that is the result of merging an\n     * updated media playlist into the original version. If the\n     * updated media playlist does not match any of the playlist\n     * entries in the original main playlist, null is returned.\n     *\n     * @param {Object} main a parsed main M3U8 object\n     * @param {Object} media a parsed media M3U8 object\n     * @return {Object} a new object that represents the original\n     * main playlist with the updated media playlist merged in, or\n     * null if the merge produced no change.\n     */\n\n    const updateMain$1 = (main, newMedia, unchangedCheck = isPlaylistUnchanged) => {\n        const result = merge(main, {});\n        const oldMedia = result.playlists[newMedia.id];\n        if (!oldMedia) {\n            return null;\n        }\n        if (unchangedCheck(oldMedia, newMedia)) {\n            return null;\n        }\n        newMedia.segments = getAllSegments(newMedia);\n        const mergedPlaylist = merge(oldMedia, newMedia); // always use the new media's preload segment\n\n        if (mergedPlaylist.preloadSegment && !newMedia.preloadSegment) {\n            delete mergedPlaylist.preloadSegment;\n        } // if the update could overlap existing segment information, merge the two segment lists\n\n        if (oldMedia.segments) {\n            if (newMedia.skip) {\n                newMedia.segments = newMedia.segments || []; // add back in objects for skipped segments, so that we merge\n                // old properties into the new segments\n\n                for (let i = 0; i < newMedia.skip.skippedSegments; i++) {\n                    newMedia.segments.unshift({\n                        skipped: true\n                    });\n                }\n            }\n            mergedPlaylist.segments = updateSegments(oldMedia.segments, newMedia.segments, newMedia.mediaSequence - oldMedia.mediaSequence);\n        } // resolve any segment URIs to prevent us from having to do it later\n\n        mergedPlaylist.segments.forEach(segment => {\n            resolveSegmentUris(segment, mergedPlaylist.resolvedUri);\n        }); // TODO Right now in the playlists array there are two references to each playlist, one\n        // that is referenced by index, and one by URI. The index reference may no longer be\n        // necessary.\n\n        for (let i = 0; i < result.playlists.length; i++) {\n            if (result.playlists[i].id === newMedia.id) {\n                result.playlists[i] = mergedPlaylist;\n            }\n        }\n        result.playlists[newMedia.id] = mergedPlaylist; // URI reference added for backwards compatibility\n\n        result.playlists[newMedia.uri] = mergedPlaylist; // update media group playlist references.\n\n        forEachMediaGroup(main, (properties, mediaType, groupKey, labelKey) => {\n            if (!properties.playlists) {\n                return;\n            }\n            for (let i = 0; i < properties.playlists.length; i++) {\n                if (newMedia.id === properties.playlists[i].id) {\n                    properties.playlists[i] = mergedPlaylist;\n                }\n            }\n        });\n        return result;\n    };\n    /**\n     * Calculates the time to wait before refreshing a live playlist\n     *\n     * @param {Object} media\n     *        The current media\n     * @param {boolean} update\n     *        True if there were any updates from the last refresh, false otherwise\n     * @return {number}\n     *         The time in ms to wait before refreshing the live playlist\n     */\n\n    const refreshDelay = (media, update) => {\n        const segments = media.segments || [];\n        const lastSegment = segments[segments.length - 1];\n        const lastPart = lastSegment && lastSegment.parts && lastSegment.parts[lastSegment.parts.length - 1];\n        const lastDuration = lastPart && lastPart.duration || lastSegment && lastSegment.duration;\n        if (update && lastDuration) {\n            return lastDuration * 1000;\n        } // if the playlist is unchanged since the last reload or last segment duration\n        // cannot be determined, try again after half the target duration\n\n        return (media.partTargetDuration || media.targetDuration || 10) * 500;\n    };\n    /**\n     * Load a playlist from a remote location\n     *\n     * @class PlaylistLoader\n     * @extends Stream\n     * @param {string|Object} src url or object of manifest\n     * @param {boolean} withCredentials the withCredentials xhr option\n     * @class\n     */\n\n    class PlaylistLoader extends EventTarget$1 {\n        constructor(src, vhs, options = {}) {\n            super();\n            if (!src) {\n                throw new Error('A non-empty playlist URL or object is required');\n            }\n            this.logger_ = logger('PlaylistLoader');\n            const {\n                withCredentials = false\n            } = options;\n            this.src = src;\n            this.vhs_ = vhs;\n            this.withCredentials = withCredentials;\n            const vhsOptions = vhs.options_;\n            this.customTagParsers = vhsOptions && vhsOptions.customTagParsers || [];\n            this.customTagMappers = vhsOptions && vhsOptions.customTagMappers || [];\n            this.llhls = vhsOptions && vhsOptions.llhls; // initialize the loader state\n\n            this.state = 'HAVE_NOTHING'; // live playlist staleness timeout\n\n            this.handleMediaupdatetimeout_ = this.handleMediaupdatetimeout_.bind(this);\n            this.on('mediaupdatetimeout', this.handleMediaupdatetimeout_);\n        }\n        handleMediaupdatetimeout_() {\n            if (this.state !== 'HAVE_METADATA') {\n                // only refresh the media playlist if no other activity is going on\n                return;\n            }\n            const media = this.media();\n            let uri = resolveUrl(this.main.uri, media.uri);\n            if (this.llhls) {\n                uri = addLLHLSQueryDirectives(uri, media);\n            }\n            this.state = 'HAVE_CURRENT_METADATA';\n            this.request = this.vhs_.xhr({\n                uri,\n                withCredentials: this.withCredentials\n            }, (error, req) => {\n                // disposed\n                if (!this.request) {\n                    return;\n                }\n                if (error) {\n                    return this.playlistRequestError(this.request, this.media(), 'HAVE_METADATA');\n                }\n                this.haveMetadata({\n                    playlistString: this.request.responseText,\n                    url: this.media().uri,\n                    id: this.media().id\n                });\n            });\n        }\n        playlistRequestError(xhr, playlist, startingState) {\n            const {\n                uri,\n                id\n            } = playlist; // any in-flight request is now finished\n\n            this.request = null;\n            if (startingState) {\n                this.state = startingState;\n            }\n            this.error = {\n                playlist: this.main.playlists[id],\n                status: xhr.status,\n                message: `HLS playlist request error at URL: ${uri}.`,\n                responseText: xhr.responseText,\n                code: xhr.status >= 500 ? 4 : 2\n            };\n            this.trigger('error');\n        }\n        parseManifest_({\n                           url,\n                           manifestString\n                       }) {\n            return parseManifest({\n                onwarn: ({\n                             message\n                         }) => this.logger_(`m3u8-parser warn for ${url}: ${message}`),\n                oninfo: ({\n                             message\n                         }) => this.logger_(`m3u8-parser info for ${url}: ${message}`),\n                manifestString,\n                customTagParsers: this.customTagParsers,\n                customTagMappers: this.customTagMappers,\n                llhls: this.llhls\n            });\n        }\n        /**\n         * Update the playlist loader's state in response to a new or updated playlist.\n         *\n         * @param {string} [playlistString]\n         *        Playlist string (if playlistObject is not provided)\n         * @param {Object} [playlistObject]\n         *        Playlist object (if playlistString is not provided)\n         * @param {string} url\n         *        URL of playlist\n         * @param {string} id\n         *        ID to use for playlist\n         */\n\n        haveMetadata({\n                         playlistString,\n                         playlistObject,\n                         url,\n                         id\n                     }) {\n            // any in-flight request is now finished\n            this.request = null;\n            this.state = 'HAVE_METADATA';\n            const playlist = playlistObject || this.parseManifest_({\n                url,\n                manifestString: playlistString\n            });\n            playlist.lastRequest = Date.now();\n            setupMediaPlaylist({\n                playlist,\n                uri: url,\n                id\n            }); // merge this playlist into the main manifest\n\n            const update = updateMain$1(this.main, playlist);\n            this.targetDuration = playlist.partTargetDuration || playlist.targetDuration;\n            this.pendingMedia_ = null;\n            if (update) {\n                this.main = update;\n                this.media_ = this.main.playlists[id];\n            } else {\n                this.trigger('playlistunchanged');\n            }\n            this.updateMediaUpdateTimeout_(refreshDelay(this.media(), !!update));\n            this.trigger('loadedplaylist');\n        }\n        /**\n         * Abort any outstanding work and clean up.\n         */\n\n        dispose() {\n            this.trigger('dispose');\n            this.stopRequest();\n            window.clearTimeout(this.mediaUpdateTimeout);\n            window.clearTimeout(this.finalRenditionTimeout);\n            this.off();\n        }\n        stopRequest() {\n            if (this.request) {\n                const oldRequest = this.request;\n                this.request = null;\n                oldRequest.onreadystatechange = null;\n                oldRequest.abort();\n            }\n        }\n        /**\n         * When called without any arguments, returns the currently\n         * active media playlist. When called with a single argument,\n         * triggers the playlist loader to asynchronously switch to the\n         * specified media playlist. Calling this method while the\n         * loader is in the HAVE_NOTHING causes an error to be emitted\n         * but otherwise has no effect.\n         *\n         * @param {Object=} playlist the parsed media playlist\n         * object to switch to\n         * @param {boolean=} shouldDelay whether we should delay the request by half target duration\n         *\n         * @return {Playlist} the current loaded media\n         */\n\n        media(playlist, shouldDelay) {\n            // getter\n            if (!playlist) {\n                return this.media_;\n            } // setter\n\n            if (this.state === 'HAVE_NOTHING') {\n                throw new Error('Cannot switch media playlist from ' + this.state);\n            } // find the playlist object if the target playlist has been\n            // specified by URI\n\n            if (typeof playlist === 'string') {\n                if (!this.main.playlists[playlist]) {\n                    throw new Error('Unknown playlist URI: ' + playlist);\n                }\n                playlist = this.main.playlists[playlist];\n            }\n            window.clearTimeout(this.finalRenditionTimeout);\n            if (shouldDelay) {\n                const delay = (playlist.partTargetDuration || playlist.targetDuration) / 2 * 1000 || 5 * 1000;\n                this.finalRenditionTimeout = window.setTimeout(this.media.bind(this, playlist, false), delay);\n                return;\n            }\n            const startingState = this.state;\n            const mediaChange = !this.media_ || playlist.id !== this.media_.id;\n            const mainPlaylistRef = this.main.playlists[playlist.id]; // switch to fully loaded playlists immediately\n\n            if (mainPlaylistRef && mainPlaylistRef.endList ||\n                // handle the case of a playlist object (e.g., if using vhs-json with a resolved\n                // media playlist or, for the case of demuxed audio, a resolved audio media group)\n                playlist.endList && playlist.segments.length) {\n                // abort outstanding playlist requests\n                if (this.request) {\n                    this.request.onreadystatechange = null;\n                    this.request.abort();\n                    this.request = null;\n                }\n                this.state = 'HAVE_METADATA';\n                this.media_ = playlist; // trigger media change if the active media has been updated\n\n                if (mediaChange) {\n                    this.trigger('mediachanging');\n                    if (startingState === 'HAVE_MAIN_MANIFEST') {\n                        // The initial playlist was a main manifest, and the first media selected was\n                        // also provided (in the form of a resolved playlist object) as part of the\n                        // source object (rather than just a URL). Therefore, since the media playlist\n                        // doesn't need to be requested, loadedmetadata won't trigger as part of the\n                        // normal flow, and needs an explicit trigger here.\n                        this.trigger('loadedmetadata');\n                    } else {\n                        this.trigger('mediachange');\n                    }\n                }\n                return;\n            } // We update/set the timeout here so that live playlists\n            // that are not a media change will \"start\" the loader as expected.\n            // We expect that this function will start the media update timeout\n            // cycle again. This also prevents a playlist switch failure from\n            // causing us to stall during live.\n\n            this.updateMediaUpdateTimeout_(refreshDelay(playlist, true)); // switching to the active playlist is a no-op\n\n            if (!mediaChange) {\n                return;\n            }\n            this.state = 'SWITCHING_MEDIA'; // there is already an outstanding playlist request\n\n            if (this.request) {\n                if (playlist.resolvedUri === this.request.url) {\n                    // requesting to switch to the same playlist multiple times\n                    // has no effect after the first\n                    return;\n                }\n                this.request.onreadystatechange = null;\n                this.request.abort();\n                this.request = null;\n            } // request the new playlist\n\n            if (this.media_) {\n                this.trigger('mediachanging');\n            }\n            this.pendingMedia_ = playlist;\n            this.request = this.vhs_.xhr({\n                uri: playlist.resolvedUri,\n                withCredentials: this.withCredentials\n            }, (error, req) => {\n                // disposed\n                if (!this.request) {\n                    return;\n                }\n                playlist.lastRequest = Date.now();\n                playlist.resolvedUri = resolveManifestRedirect(playlist.resolvedUri, req);\n                if (error) {\n                    return this.playlistRequestError(this.request, playlist, startingState);\n                }\n                this.haveMetadata({\n                    playlistString: req.responseText,\n                    url: playlist.uri,\n                    id: playlist.id\n                }); // fire loadedmetadata the first time a media playlist is loaded\n\n                if (startingState === 'HAVE_MAIN_MANIFEST') {\n                    this.trigger('loadedmetadata');\n                } else {\n                    this.trigger('mediachange');\n                }\n            });\n        }\n        /**\n         * pause loading of the playlist\n         */\n\n        pause() {\n            if (this.mediaUpdateTimeout) {\n                window.clearTimeout(this.mediaUpdateTimeout);\n                this.mediaUpdateTimeout = null;\n            }\n            this.stopRequest();\n            if (this.state === 'HAVE_NOTHING') {\n                // If we pause the loader before any data has been retrieved, its as if we never\n                // started, so reset to an unstarted state.\n                this.started = false;\n            } // Need to restore state now that no activity is happening\n\n            if (this.state === 'SWITCHING_MEDIA') {\n                // if the loader was in the process of switching media, it should either return to\n                // HAVE_MAIN_MANIFEST or HAVE_METADATA depending on if the loader has loaded a media\n                // playlist yet. This is determined by the existence of loader.media_\n                if (this.media_) {\n                    this.state = 'HAVE_METADATA';\n                } else {\n                    this.state = 'HAVE_MAIN_MANIFEST';\n                }\n            } else if (this.state === 'HAVE_CURRENT_METADATA') {\n                this.state = 'HAVE_METADATA';\n            }\n        }\n        /**\n         * start loading of the playlist\n         */\n\n        load(shouldDelay) {\n            if (this.mediaUpdateTimeout) {\n                window.clearTimeout(this.mediaUpdateTimeout);\n                this.mediaUpdateTimeout = null;\n            }\n            const media = this.media();\n            if (shouldDelay) {\n                const delay = media ? (media.partTargetDuration || media.targetDuration) / 2 * 1000 : 5 * 1000;\n                this.mediaUpdateTimeout = window.setTimeout(() => {\n                    this.mediaUpdateTimeout = null;\n                    this.load();\n                }, delay);\n                return;\n            }\n            if (!this.started) {\n                this.start();\n                return;\n            }\n            if (media && !media.endList) {\n                this.trigger('mediaupdatetimeout');\n            } else {\n                this.trigger('loadedplaylist');\n            }\n        }\n        updateMediaUpdateTimeout_(delay) {\n            if (this.mediaUpdateTimeout) {\n                window.clearTimeout(this.mediaUpdateTimeout);\n                this.mediaUpdateTimeout = null;\n            } // we only have use mediaupdatetimeout for live playlists.\n\n            if (!this.media() || this.media().endList) {\n                return;\n            }\n            this.mediaUpdateTimeout = window.setTimeout(() => {\n                this.mediaUpdateTimeout = null;\n                this.trigger('mediaupdatetimeout');\n                this.updateMediaUpdateTimeout_(delay);\n            }, delay);\n        }\n        /**\n         * start loading of the playlist\n         */\n\n        start() {\n            this.started = true;\n            if (typeof this.src === 'object') {\n                // in the case of an entirely constructed manifest object (meaning there's no actual\n                // manifest on a server), default the uri to the page's href\n                if (!this.src.uri) {\n                    this.src.uri = window.location.href;\n                } // resolvedUri is added on internally after the initial request. Since there's no\n                // request for pre-resolved manifests, add on resolvedUri here.\n\n                this.src.resolvedUri = this.src.uri; // Since a manifest object was passed in as the source (instead of a URL), the first\n                // request can be skipped (since the top level of the manifest, at a minimum, is\n                // already available as a parsed manifest object). However, if the manifest object\n                // represents a main playlist, some media playlists may need to be resolved before\n                // the starting segment list is available. Therefore, go directly to setup of the\n                // initial playlist, and let the normal flow continue from there.\n                //\n                // Note that the call to setup is asynchronous, as other sections of VHS may assume\n                // that the first request is asynchronous.\n\n                setTimeout(() => {\n                    this.setupInitialPlaylist(this.src);\n                }, 0);\n                return;\n            } // request the specified URL\n\n            this.request = this.vhs_.xhr({\n                uri: this.src,\n                withCredentials: this.withCredentials\n            }, (error, req) => {\n                // disposed\n                if (!this.request) {\n                    return;\n                } // clear the loader's request reference\n\n                this.request = null;\n                if (error) {\n                    this.error = {\n                        status: req.status,\n                        message: `HLS playlist request error at URL: ${this.src}.`,\n                        responseText: req.responseText,\n                        // MEDIA_ERR_NETWORK\n                        code: 2\n                    };\n                    if (this.state === 'HAVE_NOTHING') {\n                        this.started = false;\n                    }\n                    return this.trigger('error');\n                }\n                this.src = resolveManifestRedirect(this.src, req);\n                const manifest = this.parseManifest_({\n                    manifestString: req.responseText,\n                    url: this.src\n                });\n                this.setupInitialPlaylist(manifest);\n            });\n        }\n        srcUri() {\n            return typeof this.src === 'string' ? this.src : this.src.uri;\n        }\n        /**\n         * Given a manifest object that's either a main or media playlist, trigger the proper\n         * events and set the state of the playlist loader.\n         *\n         * If the manifest object represents a main playlist, `loadedplaylist` will be\n         * triggered to allow listeners to select a playlist. If none is selected, the loader\n         * will default to the first one in the playlists array.\n         *\n         * If the manifest object represents a media playlist, `loadedplaylist` will be\n         * triggered followed by `loadedmetadata`, as the only available playlist is loaded.\n         *\n         * In the case of a media playlist, a main playlist object wrapper with one playlist\n         * will be created so that all logic can handle playlists in the same fashion (as an\n         * assumed manifest object schema).\n         *\n         * @param {Object} manifest\n         *        The parsed manifest object\n         */\n\n        setupInitialPlaylist(manifest) {\n            this.state = 'HAVE_MAIN_MANIFEST';\n            if (manifest.playlists) {\n                this.main = manifest;\n                addPropertiesToMain(this.main, this.srcUri()); // If the initial main playlist has playlists wtih segments already resolved,\n                // then resolve URIs in advance, as they are usually done after a playlist request,\n                // which may not happen if the playlist is resolved.\n\n                manifest.playlists.forEach(playlist => {\n                    playlist.segments = getAllSegments(playlist);\n                    playlist.segments.forEach(segment => {\n                        resolveSegmentUris(segment, playlist.resolvedUri);\n                    });\n                });\n                this.trigger('loadedplaylist');\n                if (!this.request) {\n                    // no media playlist was specifically selected so start\n                    // from the first listed one\n                    this.media(this.main.playlists[0]);\n                }\n                return;\n            } // In order to support media playlists passed in as vhs-json, the case where the uri\n            // is not provided as part of the manifest should be considered, and an appropriate\n            // default used.\n\n            const uri = this.srcUri() || window.location.href;\n            this.main = mainForMedia(manifest, uri);\n            this.haveMetadata({\n                playlistObject: manifest,\n                url: uri,\n                id: this.main.playlists[0].id\n            });\n            this.trigger('loadedmetadata');\n        }\n    }\n\n    /**\n     * @file xhr.js\n     */\n    const {\n        xhr: videojsXHR\n    } = videojs;\n    const callbackWrapper = function (request, error, response, callback) {\n        const reqResponse = request.responseType === 'arraybuffer' ? request.response : request.responseText;\n        if (!error && reqResponse) {\n            request.responseTime = Date.now();\n            request.roundTripTime = request.responseTime - request.requestTime;\n            request.bytesReceived = reqResponse.byteLength || reqResponse.length;\n            if (!request.bandwidth) {\n                request.bandwidth = Math.floor(request.bytesReceived / request.roundTripTime * 8 * 1000);\n            }\n        }\n        if (response.headers) {\n            request.responseHeaders = response.headers;\n        } // videojs.xhr now uses a specific code on the error\n        // object to signal that a request has timed out instead\n        // of setting a boolean on the request object\n\n        if (error && error.code === 'ETIMEDOUT') {\n            request.timedout = true;\n        } // videojs.xhr no longer considers status codes outside of 200 and 0\n        // (for file uris) to be errors, but the old XHR did, so emulate that\n        // behavior. Status 206 may be used in response to byterange requests.\n\n        if (!error && !request.aborted && response.statusCode !== 200 && response.statusCode !== 206 && response.statusCode !== 0) {\n            error = new Error('XHR Failed with a response of: ' + (request && (reqResponse || request.responseText)));\n        }\n        callback(error, request);\n    };\n    const xhrFactory = function () {\n        const xhr = function XhrFunction(options, callback) {\n            // Add a default timeout\n            options = merge({\n                timeout: 45e3\n            }, options); // Allow an optional user-specified function to modify the option\n            // object before we construct the xhr request\n\n            const beforeRequest = XhrFunction.beforeRequest || videojs.Vhs.xhr.beforeRequest;\n            if (beforeRequest && typeof beforeRequest === 'function') {\n                const newOptions = beforeRequest(options);\n                if (newOptions) {\n                    options = newOptions;\n                }\n            } // Use the standard videojs.xhr() method unless `videojs.Vhs.xhr` has been overriden\n            // TODO: switch back to videojs.Vhs.xhr.name === 'XhrFunction' when we drop IE11\n\n            const xhrMethod = videojs.Vhs.xhr.original === true ? videojsXHR : videojs.Vhs.xhr;\n            const request = xhrMethod(options, function (error, response) {\n                return callbackWrapper(request, error, response, callback);\n            });\n            const originalAbort = request.abort;\n            request.abort = function () {\n                request.aborted = true;\n                return originalAbort.apply(request, arguments);\n            };\n            request.uri = options.uri;\n            request.requestTime = Date.now();\n            return request;\n        };\n        xhr.original = true;\n        return xhr;\n    };\n    /**\n     * Turns segment byterange into a string suitable for use in\n     * HTTP Range requests\n     *\n     * @param {Object} byterange - an object with two values defining the start and end\n     *                             of a byte-range\n     */\n\n    const byterangeStr = function (byterange) {\n        // `byterangeEnd` is one less than `offset + length` because the HTTP range\n        // header uses inclusive ranges\n        let byterangeEnd;\n        const byterangeStart = byterange.offset;\n        if (typeof byterange.offset === 'bigint' || typeof byterange.length === 'bigint') {\n            byterangeEnd = window.BigInt(byterange.offset) + window.BigInt(byterange.length) - window.BigInt(1);\n        } else {\n            byterangeEnd = byterange.offset + byterange.length - 1;\n        }\n        return 'bytes=' + byterangeStart + '-' + byterangeEnd;\n    };\n    /**\n     * Defines headers for use in the xhr request for a particular segment.\n     *\n     * @param {Object} segment - a simplified copy of the segmentInfo object\n     *                           from SegmentLoader\n     */\n\n    const segmentXhrHeaders = function (segment) {\n        const headers = {};\n        if (segment.byterange) {\n            headers.Range = byterangeStr(segment.byterange);\n        }\n        return headers;\n    };\n\n    /**\n     * @file bin-utils.js\n     */\n\n    /**\n     * convert a TimeRange to text\n     *\n     * @param {TimeRange} range the timerange to use for conversion\n     * @param {number} i the iterator on the range to convert\n     * @return {string} the range in string format\n     */\n\n    const textRange = function (range, i) {\n        return range.start(i) + '-' + range.end(i);\n    };\n    /**\n     * format a number as hex string\n     *\n     * @param {number} e The number\n     * @param {number} i the iterator\n     * @return {string} the hex formatted number as a string\n     */\n\n    const formatHexString = function (e, i) {\n        const value = e.toString(16);\n        return '00'.substring(0, 2 - value.length) + value + (i % 2 ? ' ' : '');\n    };\n    const formatAsciiString = function (e) {\n        if (e >= 0x20 && e < 0x7e) {\n            return String.fromCharCode(e);\n        }\n        return '.';\n    };\n    /**\n     * Creates an object for sending to a web worker modifying properties that are TypedArrays\n     * into a new object with seperated properties for the buffer, byteOffset, and byteLength.\n     *\n     * @param {Object} message\n     *        Object of properties and values to send to the web worker\n     * @return {Object}\n     *         Modified message with TypedArray values expanded\n     * @function createTransferableMessage\n     */\n\n    const createTransferableMessage = function (message) {\n        const transferable = {};\n        Object.keys(message).forEach(key => {\n            const value = message[key];\n            if (isArrayBufferView(value)) {\n                transferable[key] = {\n                    bytes: value.buffer,\n                    byteOffset: value.byteOffset,\n                    byteLength: value.byteLength\n                };\n            } else {\n                transferable[key] = value;\n            }\n        });\n        return transferable;\n    };\n    /**\n     * Returns a unique string identifier for a media initialization\n     * segment.\n     *\n     * @param {Object} initSegment\n     *        the init segment object.\n     *\n     * @return {string} the generated init segment id\n     */\n\n    const initSegmentId = function (initSegment) {\n        const byterange = initSegment.byterange || {\n            length: Infinity,\n            offset: 0\n        };\n        return [byterange.length, byterange.offset, initSegment.resolvedUri].join(',');\n    };\n    /**\n     * Returns a unique string identifier for a media segment key.\n     *\n     * @param {Object} key the encryption key\n     * @return {string} the unique id for the media segment key.\n     */\n\n    const segmentKeyId = function (key) {\n        return key.resolvedUri;\n    };\n    /**\n     * utils to help dump binary data to the console\n     *\n     * @param {Array|TypedArray} data\n     *        data to dump to a string\n     *\n     * @return {string} the data as a hex string.\n     */\n\n    const hexDump = data => {\n        const bytes = Array.prototype.slice.call(data);\n        const step = 16;\n        let result = '';\n        let hex;\n        let ascii;\n        for (let j = 0; j < bytes.length / step; j++) {\n            hex = bytes.slice(j * step, j * step + step).map(formatHexString).join('');\n            ascii = bytes.slice(j * step, j * step + step).map(formatAsciiString).join('');\n            result += hex + ' ' + ascii + '\\n';\n        }\n        return result;\n    };\n    const tagDump = ({\n                         bytes\n                     }) => hexDump(bytes);\n    const textRanges = ranges => {\n        let result = '';\n        let i;\n        for (i = 0; i < ranges.length; i++) {\n            result += textRange(ranges, i) + ' ';\n        }\n        return result;\n    };\n    var utils = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        createTransferableMessage: createTransferableMessage,\n        initSegmentId: initSegmentId,\n        segmentKeyId: segmentKeyId,\n        hexDump: hexDump,\n        tagDump: tagDump,\n        textRanges: textRanges\n    });\n\n    // TODO handle fmp4 case where the timing info is accurate and doesn't involve transmux\n    // 25% was arbitrarily chosen, and may need to be refined over time.\n\n    const SEGMENT_END_FUDGE_PERCENT = 0.25;\n    /**\n     * Converts a player time (any time that can be gotten/set from player.currentTime(),\n     * e.g., any time within player.seekable().start(0) to player.seekable().end(0)) to a\n     * program time (any time referencing the real world (e.g., EXT-X-PROGRAM-DATE-TIME)).\n     *\n     * The containing segment is required as the EXT-X-PROGRAM-DATE-TIME serves as an \"anchor\n     * point\" (a point where we have a mapping from program time to player time, with player\n     * time being the post transmux start of the segment).\n     *\n     * For more details, see [this doc](../../docs/program-time-from-player-time.md).\n     *\n     * @param {number} playerTime the player time\n     * @param {Object} segment the segment which contains the player time\n     * @return {Date} program time\n     */\n\n    const playerTimeToProgramTime = (playerTime, segment) => {\n        if (!segment.dateTimeObject) {\n            // Can't convert without an \"anchor point\" for the program time (i.e., a time that can\n            // be used to map the start of a segment with a real world time).\n            return null;\n        }\n        const transmuxerPrependedSeconds = segment.videoTimingInfo.transmuxerPrependedSeconds;\n        const transmuxedStart = segment.videoTimingInfo.transmuxedPresentationStart; // get the start of the content from before old content is prepended\n\n        const startOfSegment = transmuxedStart + transmuxerPrependedSeconds;\n        const offsetFromSegmentStart = playerTime - startOfSegment;\n        return new Date(segment.dateTimeObject.getTime() + offsetFromSegmentStart * 1000);\n    };\n    const originalSegmentVideoDuration = videoTimingInfo => {\n        return videoTimingInfo.transmuxedPresentationEnd - videoTimingInfo.transmuxedPresentationStart - videoTimingInfo.transmuxerPrependedSeconds;\n    };\n    /**\n     * Finds a segment that contains the time requested given as an ISO-8601 string. The\n     * returned segment might be an estimate or an accurate match.\n     *\n     * @param {string} programTime The ISO-8601 programTime to find a match for\n     * @param {Object} playlist A playlist object to search within\n     */\n\n    const findSegmentForProgramTime = (programTime, playlist) => {\n        // Assumptions:\n        //  - verifyProgramDateTimeTags has already been run\n        //  - live streams have been started\n        let dateTimeObject;\n        try {\n            dateTimeObject = new Date(programTime);\n        } catch (e) {\n            return null;\n        }\n        if (!playlist || !playlist.segments || playlist.segments.length === 0) {\n            return null;\n        }\n        let segment = playlist.segments[0];\n        if (dateTimeObject < segment.dateTimeObject) {\n            // Requested time is before stream start.\n            return null;\n        }\n        for (let i = 0; i < playlist.segments.length - 1; i++) {\n            segment = playlist.segments[i];\n            const nextSegmentStart = playlist.segments[i + 1].dateTimeObject;\n            if (dateTimeObject < nextSegmentStart) {\n                break;\n            }\n        }\n        const lastSegment = playlist.segments[playlist.segments.length - 1];\n        const lastSegmentStart = lastSegment.dateTimeObject;\n        const lastSegmentDuration = lastSegment.videoTimingInfo ? originalSegmentVideoDuration(lastSegment.videoTimingInfo) : lastSegment.duration + lastSegment.duration * SEGMENT_END_FUDGE_PERCENT;\n        const lastSegmentEnd = new Date(lastSegmentStart.getTime() + lastSegmentDuration * 1000);\n        if (dateTimeObject > lastSegmentEnd) {\n            // Beyond the end of the stream, or our best guess of the end of the stream.\n            return null;\n        }\n        if (dateTimeObject > lastSegmentStart) {\n            segment = lastSegment;\n        }\n        return {\n            segment,\n            estimatedStart: segment.videoTimingInfo ? segment.videoTimingInfo.transmuxedPresentationStart : Playlist.duration(playlist, playlist.mediaSequence + playlist.segments.indexOf(segment)),\n            // Although, given that all segments have accurate date time objects, the segment\n            // selected should be accurate, unless the video has been transmuxed at some point\n            // (determined by the presence of the videoTimingInfo object), the segment's \"player\n            // time\" (the start time in the player) can't be considered accurate.\n            type: segment.videoTimingInfo ? 'accurate' : 'estimate'\n        };\n    };\n    /**\n     * Finds a segment that contains the given player time(in seconds).\n     *\n     * @param {number} time The player time to find a match for\n     * @param {Object} playlist A playlist object to search within\n     */\n\n    const findSegmentForPlayerTime = (time, playlist) => {\n        // Assumptions:\n        // - there will always be a segment.duration\n        // - we can start from zero\n        // - segments are in time order\n        if (!playlist || !playlist.segments || playlist.segments.length === 0) {\n            return null;\n        }\n        let segmentEnd = 0;\n        let segment;\n        for (let i = 0; i < playlist.segments.length; i++) {\n            segment = playlist.segments[i]; // videoTimingInfo is set after the segment is downloaded and transmuxed, and\n            // should contain the most accurate values we have for the segment's player times.\n            //\n            // Use the accurate transmuxedPresentationEnd value if it is available, otherwise fall\n            // back to an estimate based on the manifest derived (inaccurate) segment.duration, to\n            // calculate an end value.\n\n            segmentEnd = segment.videoTimingInfo ? segment.videoTimingInfo.transmuxedPresentationEnd : segmentEnd + segment.duration;\n            if (time <= segmentEnd) {\n                break;\n            }\n        }\n        const lastSegment = playlist.segments[playlist.segments.length - 1];\n        if (lastSegment.videoTimingInfo && lastSegment.videoTimingInfo.transmuxedPresentationEnd < time) {\n            // The time requested is beyond the stream end.\n            return null;\n        }\n        if (time > segmentEnd) {\n            // The time is within or beyond the last segment.\n            //\n            // Check to see if the time is beyond a reasonable guess of the end of the stream.\n            if (time > segmentEnd + lastSegment.duration * SEGMENT_END_FUDGE_PERCENT) {\n                // Technically, because the duration value is only an estimate, the time may still\n                // exist in the last segment, however, there isn't enough information to make even\n                // a reasonable estimate.\n                return null;\n            }\n            segment = lastSegment;\n        }\n        return {\n            segment,\n            estimatedStart: segment.videoTimingInfo ? segment.videoTimingInfo.transmuxedPresentationStart : segmentEnd - segment.duration,\n            // Because videoTimingInfo is only set after transmux, it is the only way to get\n            // accurate timing values.\n            type: segment.videoTimingInfo ? 'accurate' : 'estimate'\n        };\n    };\n    /**\n     * Gives the offset of the comparisonTimestamp from the programTime timestamp in seconds.\n     * If the offset returned is positive, the programTime occurs after the\n     * comparisonTimestamp.\n     * If the offset is negative, the programTime occurs before the comparisonTimestamp.\n     *\n     * @param {string} comparisonTimeStamp An ISO-8601 timestamp to compare against\n     * @param {string} programTime The programTime as an ISO-8601 string\n     * @return {number} offset\n     */\n\n    const getOffsetFromTimestamp = (comparisonTimeStamp, programTime) => {\n        let segmentDateTime;\n        let programDateTime;\n        try {\n            segmentDateTime = new Date(comparisonTimeStamp);\n            programDateTime = new Date(programTime);\n        } catch (e) {// TODO handle error\n        }\n        const segmentTimeEpoch = segmentDateTime.getTime();\n        const programTimeEpoch = programDateTime.getTime();\n        return (programTimeEpoch - segmentTimeEpoch) / 1000;\n    };\n    /**\n     * Checks that all segments in this playlist have programDateTime tags.\n     *\n     * @param {Object} playlist A playlist object\n     */\n\n    const verifyProgramDateTimeTags = playlist => {\n        if (!playlist.segments || playlist.segments.length === 0) {\n            return false;\n        }\n        for (let i = 0; i < playlist.segments.length; i++) {\n            const segment = playlist.segments[i];\n            if (!segment.dateTimeObject) {\n                return false;\n            }\n        }\n        return true;\n    };\n    /**\n     * Returns the programTime of the media given a playlist and a playerTime.\n     * The playlist must have programDateTime tags for a programDateTime tag to be returned.\n     * If the segments containing the time requested have not been buffered yet, an estimate\n     * may be returned to the callback.\n     *\n     * @param {Object} args\n     * @param {Object} args.playlist A playlist object to search within\n     * @param {number} time A playerTime in seconds\n     * @param {Function} callback(err, programTime)\n     * @return {string} err.message A detailed error message\n     * @return {Object} programTime\n     * @return {number} programTime.mediaSeconds The streamTime in seconds\n     * @return {string} programTime.programDateTime The programTime as an ISO-8601 String\n     */\n\n    const getProgramTime = ({\n                                playlist,\n                                time = undefined,\n                                callback\n                            }) => {\n        if (!callback) {\n            throw new Error('getProgramTime: callback must be provided');\n        }\n        if (!playlist || time === undefined) {\n            return callback({\n                message: 'getProgramTime: playlist and time must be provided'\n            });\n        }\n        const matchedSegment = findSegmentForPlayerTime(time, playlist);\n        if (!matchedSegment) {\n            return callback({\n                message: 'valid programTime was not found'\n            });\n        }\n        if (matchedSegment.type === 'estimate') {\n            return callback({\n                message: 'Accurate programTime could not be determined.' + ' Please seek to e.seekTime and try again',\n                seekTime: matchedSegment.estimatedStart\n            });\n        }\n        const programTimeObject = {\n            mediaSeconds: time\n        };\n        const programTime = playerTimeToProgramTime(time, matchedSegment.segment);\n        if (programTime) {\n            programTimeObject.programDateTime = programTime.toISOString();\n        }\n        return callback(null, programTimeObject);\n    };\n    /**\n     * Seeks in the player to a time that matches the given programTime ISO-8601 string.\n     *\n     * @param {Object} args\n     * @param {string} args.programTime A programTime to seek to as an ISO-8601 String\n     * @param {Object} args.playlist A playlist to look within\n     * @param {number} args.retryCount The number of times to try for an accurate seek. Default is 2.\n     * @param {Function} args.seekTo A method to perform a seek\n     * @param {boolean} args.pauseAfterSeek Whether to end in a paused state after seeking. Default is true.\n     * @param {Object} args.tech The tech to seek on\n     * @param {Function} args.callback(err, newTime) A callback to return the new time to\n     * @return {string} err.message A detailed error message\n     * @return {number} newTime The exact time that was seeked to in seconds\n     */\n\n    const seekToProgramTime = ({\n                                   programTime,\n                                   playlist,\n                                   retryCount = 2,\n                                   seekTo,\n                                   pauseAfterSeek = true,\n                                   tech,\n                                   callback\n                               }) => {\n        if (!callback) {\n            throw new Error('seekToProgramTime: callback must be provided');\n        }\n        if (typeof programTime === 'undefined' || !playlist || !seekTo) {\n            return callback({\n                message: 'seekToProgramTime: programTime, seekTo and playlist must be provided'\n            });\n        }\n        if (!playlist.endList && !tech.hasStarted_) {\n            return callback({\n                message: 'player must be playing a live stream to start buffering'\n            });\n        }\n        if (!verifyProgramDateTimeTags(playlist)) {\n            return callback({\n                message: 'programDateTime tags must be provided in the manifest ' + playlist.resolvedUri\n            });\n        }\n        const matchedSegment = findSegmentForProgramTime(programTime, playlist); // no match\n\n        if (!matchedSegment) {\n            return callback({\n                message: `${programTime} was not found in the stream`\n            });\n        }\n        const segment = matchedSegment.segment;\n        const mediaOffset = getOffsetFromTimestamp(segment.dateTimeObject, programTime);\n        if (matchedSegment.type === 'estimate') {\n            // we've run out of retries\n            if (retryCount === 0) {\n                return callback({\n                    message: `${programTime} is not buffered yet. Try again`\n                });\n            }\n            seekTo(matchedSegment.estimatedStart + mediaOffset);\n            tech.one('seeked', () => {\n                seekToProgramTime({\n                    programTime,\n                    playlist,\n                    retryCount: retryCount - 1,\n                    seekTo,\n                    pauseAfterSeek,\n                    tech,\n                    callback\n                });\n            });\n            return;\n        } // Since the segment.start value is determined from the buffered end or ending time\n        // of the prior segment, the seekToTime doesn't need to account for any transmuxer\n        // modifications.\n\n        const seekToTime = segment.start + mediaOffset;\n        const seekedCallback = () => {\n            return callback(null, tech.currentTime());\n        }; // listen for seeked event\n\n        tech.one('seeked', seekedCallback); // pause before seeking as video.js will restore this state\n\n        if (pauseAfterSeek) {\n            tech.pause();\n        }\n        seekTo(seekToTime);\n    };\n\n    // which will only happen if the request is complete.\n\n    const callbackOnCompleted = (request, cb) => {\n        if (request.readyState === 4) {\n            return cb();\n        }\n        return;\n    };\n    const containerRequest = (uri, xhr, cb) => {\n        let bytes = [];\n        let id3Offset;\n        let finished = false;\n        const endRequestAndCallback = function (err, req, type, _bytes) {\n            req.abort();\n            finished = true;\n            return cb(err, req, type, _bytes);\n        };\n        const progressListener = function (error, request) {\n            if (finished) {\n                return;\n            }\n            if (error) {\n                return endRequestAndCallback(error, request, '', bytes);\n            } // grap the new part of content that was just downloaded\n\n            const newPart = request.responseText.substring(bytes && bytes.byteLength || 0, request.responseText.length); // add that onto bytes\n\n            bytes = concatTypedArrays(bytes, stringToBytes(newPart, true));\n            id3Offset = id3Offset || getId3Offset(bytes); // we need at least 10 bytes to determine a type\n            // or we need at least two bytes after an id3Offset\n\n            if (bytes.length < 10 || id3Offset && bytes.length < id3Offset + 2) {\n                return callbackOnCompleted(request, () => endRequestAndCallback(error, request, '', bytes));\n            }\n            const type = detectContainerForBytes(bytes); // if this looks like a ts segment but we don't have enough data\n            // to see the second sync byte, wait until we have enough data\n            // before declaring it ts\n\n            if (type === 'ts' && bytes.length < 188) {\n                return callbackOnCompleted(request, () => endRequestAndCallback(error, request, '', bytes));\n            } // this may be an unsynced ts segment\n            // wait for 376 bytes before detecting no container\n\n            if (!type && bytes.length < 376) {\n                return callbackOnCompleted(request, () => endRequestAndCallback(error, request, '', bytes));\n            }\n            return endRequestAndCallback(null, request, type, bytes);\n        };\n        const options = {\n            uri,\n            beforeSend(request) {\n                // this forces the browser to pass the bytes to us unprocessed\n                request.overrideMimeType('text/plain; charset=x-user-defined');\n                request.addEventListener('progress', function ({\n                                                                   total,\n                                                                   loaded\n                                                               }) {\n                    return callbackWrapper(request, null, {\n                        statusCode: request.status\n                    }, progressListener);\n                });\n            }\n        };\n        const request = xhr(options, function (error, response) {\n            return callbackWrapper(request, error, response, progressListener);\n        });\n        return request;\n    };\n    const {\n        EventTarget\n    } = videojs;\n    const dashPlaylistUnchanged = function (a, b) {\n        if (!isPlaylistUnchanged(a, b)) {\n            return false;\n        } // for dash the above check will often return true in scenarios where\n        // the playlist actually has changed because mediaSequence isn't a\n        // dash thing, and we often set it to 1. So if the playlists have the same amount\n        // of segments we return true.\n        // So for dash we need to make sure that the underlying segments are different.\n        // if sidx changed then the playlists are different.\n\n        if (a.sidx && b.sidx && (a.sidx.offset !== b.sidx.offset || a.sidx.length !== b.sidx.length)) {\n            return false;\n        } else if (!a.sidx && b.sidx || a.sidx && !b.sidx) {\n            return false;\n        } // one or the other does not have segments\n        // there was a change.\n\n        if (a.segments && !b.segments || !a.segments && b.segments) {\n            return false;\n        } // neither has segments nothing changed\n\n        if (!a.segments && !b.segments) {\n            return true;\n        } // check segments themselves\n\n        for (let i = 0; i < a.segments.length; i++) {\n            const aSegment = a.segments[i];\n            const bSegment = b.segments[i]; // if uris are different between segments there was a change\n\n            if (aSegment.uri !== bSegment.uri) {\n                return false;\n            } // neither segment has a byterange, there will be no byterange change.\n\n            if (!aSegment.byterange && !bSegment.byterange) {\n                continue;\n            }\n            const aByterange = aSegment.byterange;\n            const bByterange = bSegment.byterange; // if byterange only exists on one of the segments, there was a change.\n\n            if (aByterange && !bByterange || !aByterange && bByterange) {\n                return false;\n            } // if both segments have byterange with different offsets, there was a change.\n\n            if (aByterange.offset !== bByterange.offset || aByterange.length !== bByterange.length) {\n                return false;\n            }\n        } // if everything was the same with segments, this is the same playlist.\n\n        return true;\n    };\n    /**\n     * Use the representation IDs from the mpd object to create groupIDs, the NAME is set to mandatory representation\n     * ID in the parser. This allows for continuous playout across periods with the same representation IDs\n     * (continuous periods as defined in DASH-IF 3.2.12). This is assumed in the mpd-parser as well. If we want to support\n     * periods without continuous playback this function may need modification as well as the parser.\n     */\n\n    const dashGroupId = (type, group, label, playlist) => {\n        // If the manifest somehow does not have an ID (non-dash compliant), use the label.\n        const playlistId = playlist.attributes.NAME || label;\n        return `placeholder-uri-${type}-${group}-${playlistId}`;\n    };\n    /**\n     * Parses the main XML string and updates playlist URI references.\n     *\n     * @param {Object} config\n     *        Object of arguments\n     * @param {string} config.mainXml\n     *        The mpd XML\n     * @param {string} config.srcUrl\n     *        The mpd URL\n     * @param {Date} config.clientOffset\n     *         A time difference between server and client\n     * @param {Object} config.sidxMapping\n     *        SIDX mappings for moof/mdat URIs and byte ranges\n     * @return {Object}\n     *         The parsed mpd manifest object\n     */\n\n    const parseMainXml = ({\n                              mainXml,\n                              srcUrl,\n                              clientOffset,\n                              sidxMapping,\n                              previousManifest\n                          }) => {\n        const manifest = parse(mainXml, {\n            manifestUri: srcUrl,\n            clientOffset,\n            sidxMapping,\n            previousManifest\n        });\n        addPropertiesToMain(manifest, srcUrl, dashGroupId);\n        return manifest;\n    };\n    /**\n     * Removes any mediaGroup labels that no longer exist in the newMain\n     *\n     * @param {Object} update\n     *         The previous mpd object being updated\n     * @param {Object} newMain\n     *         The new mpd object\n     */\n\n    const removeOldMediaGroupLabels = (update, newMain) => {\n        forEachMediaGroup(update, (properties, type, group, label) => {\n            if (!(label in newMain.mediaGroups[type][group])) {\n                delete update.mediaGroups[type][group][label];\n            }\n        });\n    };\n    /**\n     * Returns a new main manifest that is the result of merging an updated main manifest\n     * into the original version.\n     *\n     * @param {Object} oldMain\n     *        The old parsed mpd object\n     * @param {Object} newMain\n     *        The updated parsed mpd object\n     * @return {Object}\n     *         A new object representing the original main manifest with the updated media\n     *         playlists merged in\n     */\n\n    const updateMain = (oldMain, newMain, sidxMapping) => {\n        let noChanges = true;\n        let update = merge(oldMain, {\n            // These are top level properties that can be updated\n            duration: newMain.duration,\n            minimumUpdatePeriod: newMain.minimumUpdatePeriod,\n            timelineStarts: newMain.timelineStarts\n        }); // First update the playlists in playlist list\n\n        for (let i = 0; i < newMain.playlists.length; i++) {\n            const playlist = newMain.playlists[i];\n            if (playlist.sidx) {\n                const sidxKey = generateSidxKey(playlist.sidx); // add sidx segments to the playlist if we have all the sidx info already\n\n                if (sidxMapping && sidxMapping[sidxKey] && sidxMapping[sidxKey].sidx) {\n                    addSidxSegmentsToPlaylist$1(playlist, sidxMapping[sidxKey].sidx, playlist.sidx.resolvedUri);\n                }\n            }\n            const playlistUpdate = updateMain$1(update, playlist, dashPlaylistUnchanged);\n            if (playlistUpdate) {\n                update = playlistUpdate;\n                noChanges = false;\n            }\n        } // Then update media group playlists\n\n        forEachMediaGroup(newMain, (properties, type, group, label) => {\n            if (properties.playlists && properties.playlists.length) {\n                const id = properties.playlists[0].id;\n                const playlistUpdate = updateMain$1(update, properties.playlists[0], dashPlaylistUnchanged);\n                if (playlistUpdate) {\n                    update = playlistUpdate; // add new mediaGroup label if it doesn't exist and assign the new mediaGroup.\n\n                    if (!(label in update.mediaGroups[type][group])) {\n                        update.mediaGroups[type][group][label] = properties;\n                    } // update the playlist reference within media groups\n\n                    update.mediaGroups[type][group][label].playlists[0] = update.playlists[id];\n                    noChanges = false;\n                }\n            }\n        }); // remove mediaGroup labels and references that no longer exist in the newMain\n\n        removeOldMediaGroupLabels(update, newMain);\n        if (newMain.minimumUpdatePeriod !== oldMain.minimumUpdatePeriod) {\n            noChanges = false;\n        }\n        if (noChanges) {\n            return null;\n        }\n        return update;\n    }; // SIDX should be equivalent if the URI and byteranges of the SIDX match.\n    // If the SIDXs have maps, the two maps should match,\n    // both `a` and `b` missing SIDXs is considered matching.\n    // If `a` or `b` but not both have a map, they aren't matching.\n\n    const equivalentSidx = (a, b) => {\n        const neitherMap = Boolean(!a.map && !b.map);\n        const equivalentMap = neitherMap || Boolean(a.map && b.map && a.map.byterange.offset === b.map.byterange.offset && a.map.byterange.length === b.map.byterange.length);\n        return equivalentMap && a.uri === b.uri && a.byterange.offset === b.byterange.offset && a.byterange.length === b.byterange.length;\n    }; // exported for testing\n\n    const compareSidxEntry = (playlists, oldSidxMapping) => {\n        const newSidxMapping = {};\n        for (const id in playlists) {\n            const playlist = playlists[id];\n            const currentSidxInfo = playlist.sidx;\n            if (currentSidxInfo) {\n                const key = generateSidxKey(currentSidxInfo);\n                if (!oldSidxMapping[key]) {\n                    break;\n                }\n                const savedSidxInfo = oldSidxMapping[key].sidxInfo;\n                if (equivalentSidx(savedSidxInfo, currentSidxInfo)) {\n                    newSidxMapping[key] = oldSidxMapping[key];\n                }\n            }\n        }\n        return newSidxMapping;\n    };\n    /**\n     *  A function that filters out changed items as they need to be requested separately.\n     *\n     *  The method is exported for testing\n     *\n     *  @param {Object} main the parsed mpd XML returned via mpd-parser\n     *  @param {Object} oldSidxMapping the SIDX to compare against\n     */\n\n    const filterChangedSidxMappings = (main, oldSidxMapping) => {\n        const videoSidx = compareSidxEntry(main.playlists, oldSidxMapping);\n        let mediaGroupSidx = videoSidx;\n        forEachMediaGroup(main, (properties, mediaType, groupKey, labelKey) => {\n            if (properties.playlists && properties.playlists.length) {\n                const playlists = properties.playlists;\n                mediaGroupSidx = merge(mediaGroupSidx, compareSidxEntry(playlists, oldSidxMapping));\n            }\n        });\n        return mediaGroupSidx;\n    };\n    class DashPlaylistLoader extends EventTarget {\n        // DashPlaylistLoader must accept either a src url or a playlist because subsequent\n        // playlist loader setups from media groups will expect to be able to pass a playlist\n        // (since there aren't external URLs to media playlists with DASH)\n        constructor(srcUrlOrPlaylist, vhs, options = {}, mainPlaylistLoader) {\n            super();\n            this.mainPlaylistLoader_ = mainPlaylistLoader || this;\n            if (!mainPlaylistLoader) {\n                this.isMain_ = true;\n            }\n            const {\n                withCredentials = false\n            } = options;\n            this.vhs_ = vhs;\n            this.withCredentials = withCredentials;\n            if (!srcUrlOrPlaylist) {\n                throw new Error('A non-empty playlist URL or object is required');\n            } // event naming?\n\n            this.on('minimumUpdatePeriod', () => {\n                this.refreshXml_();\n            }); // live playlist staleness timeout\n\n            this.on('mediaupdatetimeout', () => {\n                this.refreshMedia_(this.media().id);\n            });\n            this.state = 'HAVE_NOTHING';\n            this.loadedPlaylists_ = {};\n            this.logger_ = logger('DashPlaylistLoader'); // initialize the loader state\n            // The mainPlaylistLoader will be created with a string\n\n            if (this.isMain_) {\n                this.mainPlaylistLoader_.srcUrl = srcUrlOrPlaylist; // TODO: reset sidxMapping between period changes\n                // once multi-period is refactored\n\n                this.mainPlaylistLoader_.sidxMapping_ = {};\n            } else {\n                this.childPlaylist_ = srcUrlOrPlaylist;\n            }\n        }\n        requestErrored_(err, request, startingState) {\n            // disposed\n            if (!this.request) {\n                return true;\n            } // pending request is cleared\n\n            this.request = null;\n            if (err) {\n                // use the provided error object or create one\n                // based on the request/response\n                this.error = typeof err === 'object' && !(err instanceof Error) ? err : {\n                    status: request.status,\n                    message: 'DASH request error at URL: ' + request.uri,\n                    response: request.response,\n                    // MEDIA_ERR_NETWORK\n                    code: 2\n                };\n                if (startingState) {\n                    this.state = startingState;\n                }\n                this.trigger('error');\n                return true;\n            }\n        }\n        /**\n         * Verify that the container of the sidx segment can be parsed\n         * and if it can, get and parse that segment.\n         */\n\n        addSidxSegments_(playlist, startingState, cb) {\n            const sidxKey = playlist.sidx && generateSidxKey(playlist.sidx); // playlist lacks sidx or sidx segments were added to this playlist already.\n\n            if (!playlist.sidx || !sidxKey || this.mainPlaylistLoader_.sidxMapping_[sidxKey]) {\n                // keep this function async\n                this.mediaRequest_ = window.setTimeout(() => cb(false), 0);\n                return;\n            } // resolve the segment URL relative to the playlist\n\n            const uri = resolveManifestRedirect(playlist.sidx.resolvedUri);\n            const fin = (err, request) => {\n                if (this.requestErrored_(err, request, startingState)) {\n                    return;\n                }\n                const sidxMapping = this.mainPlaylistLoader_.sidxMapping_;\n                let sidx;\n                try {\n                    sidx = parseSidx_1(toUint8(request.response).subarray(8));\n                } catch (e) {\n                    // sidx parsing failed.\n                    this.requestErrored_(e, request, startingState);\n                    return;\n                }\n                sidxMapping[sidxKey] = {\n                    sidxInfo: playlist.sidx,\n                    sidx\n                };\n                addSidxSegmentsToPlaylist$1(playlist, sidx, playlist.sidx.resolvedUri);\n                return cb(true);\n            };\n            this.request = containerRequest(uri, this.vhs_.xhr, (err, request, container, bytes) => {\n                if (err) {\n                    return fin(err, request);\n                }\n                if (!container || container !== 'mp4') {\n                    return fin({\n                        status: request.status,\n                        message: `Unsupported ${container || 'unknown'} container type for sidx segment at URL: ${uri}`,\n                        // response is just bytes in this case\n                        // but we really don't want to return that.\n                        response: '',\n                        playlist,\n                        internal: true,\n                        playlistExclusionDuration: Infinity,\n                        // MEDIA_ERR_NETWORK\n                        code: 2\n                    }, request);\n                } // if we already downloaded the sidx bytes in the container request, use them\n\n                const {\n                    offset,\n                    length\n                } = playlist.sidx.byterange;\n                if (bytes.length >= length + offset) {\n                    return fin(err, {\n                        response: bytes.subarray(offset, offset + length),\n                        status: request.status,\n                        uri: request.uri\n                    });\n                } // otherwise request sidx bytes\n\n                this.request = this.vhs_.xhr({\n                    uri,\n                    responseType: 'arraybuffer',\n                    headers: segmentXhrHeaders({\n                        byterange: playlist.sidx.byterange\n                    })\n                }, fin);\n            });\n        }\n        dispose() {\n            this.trigger('dispose');\n            this.stopRequest();\n            this.loadedPlaylists_ = {};\n            window.clearTimeout(this.minimumUpdatePeriodTimeout_);\n            window.clearTimeout(this.mediaRequest_);\n            window.clearTimeout(this.mediaUpdateTimeout);\n            this.mediaUpdateTimeout = null;\n            this.mediaRequest_ = null;\n            this.minimumUpdatePeriodTimeout_ = null;\n            if (this.mainPlaylistLoader_.createMupOnMedia_) {\n                this.off('loadedmetadata', this.mainPlaylistLoader_.createMupOnMedia_);\n                this.mainPlaylistLoader_.createMupOnMedia_ = null;\n            }\n            this.off();\n        }\n        hasPendingRequest() {\n            return this.request || this.mediaRequest_;\n        }\n        stopRequest() {\n            if (this.request) {\n                const oldRequest = this.request;\n                this.request = null;\n                oldRequest.onreadystatechange = null;\n                oldRequest.abort();\n            }\n        }\n        media(playlist) {\n            // getter\n            if (!playlist) {\n                return this.media_;\n            } // setter\n\n            if (this.state === 'HAVE_NOTHING') {\n                throw new Error('Cannot switch media playlist from ' + this.state);\n            }\n            const startingState = this.state; // find the playlist object if the target playlist has been specified by URI\n\n            if (typeof playlist === 'string') {\n                if (!this.mainPlaylistLoader_.main.playlists[playlist]) {\n                    throw new Error('Unknown playlist URI: ' + playlist);\n                }\n                playlist = this.mainPlaylistLoader_.main.playlists[playlist];\n            }\n            const mediaChange = !this.media_ || playlist.id !== this.media_.id; // switch to previously loaded playlists immediately\n\n            if (mediaChange && this.loadedPlaylists_[playlist.id] && this.loadedPlaylists_[playlist.id].endList) {\n                this.state = 'HAVE_METADATA';\n                this.media_ = playlist; // trigger media change if the active media has been updated\n\n                if (mediaChange) {\n                    this.trigger('mediachanging');\n                    this.trigger('mediachange');\n                }\n                return;\n            } // switching to the active playlist is a no-op\n\n            if (!mediaChange) {\n                return;\n            } // switching from an already loaded playlist\n\n            if (this.media_) {\n                this.trigger('mediachanging');\n            }\n            this.addSidxSegments_(playlist, startingState, sidxChanged => {\n                // everything is ready just continue to haveMetadata\n                this.haveMetadata({\n                    startingState,\n                    playlist\n                });\n            });\n        }\n        haveMetadata({\n                         startingState,\n                         playlist\n                     }) {\n            this.state = 'HAVE_METADATA';\n            this.loadedPlaylists_[playlist.id] = playlist;\n            this.mediaRequest_ = null; // This will trigger loadedplaylist\n\n            this.refreshMedia_(playlist.id); // fire loadedmetadata the first time a media playlist is loaded\n            // to resolve setup of media groups\n\n            if (startingState === 'HAVE_MAIN_MANIFEST') {\n                this.trigger('loadedmetadata');\n            } else {\n                // trigger media change if the active media has been updated\n                this.trigger('mediachange');\n            }\n        }\n        pause() {\n            if (this.mainPlaylistLoader_.createMupOnMedia_) {\n                this.off('loadedmetadata', this.mainPlaylistLoader_.createMupOnMedia_);\n                this.mainPlaylistLoader_.createMupOnMedia_ = null;\n            }\n            this.stopRequest();\n            window.clearTimeout(this.mediaUpdateTimeout);\n            this.mediaUpdateTimeout = null;\n            if (this.isMain_) {\n                window.clearTimeout(this.mainPlaylistLoader_.minimumUpdatePeriodTimeout_);\n                this.mainPlaylistLoader_.minimumUpdatePeriodTimeout_ = null;\n            }\n            if (this.state === 'HAVE_NOTHING') {\n                // If we pause the loader before any data has been retrieved, its as if we never\n                // started, so reset to an unstarted state.\n                this.started = false;\n            }\n        }\n        load(isFinalRendition) {\n            window.clearTimeout(this.mediaUpdateTimeout);\n            this.mediaUpdateTimeout = null;\n            const media = this.media();\n            if (isFinalRendition) {\n                const delay = media ? media.targetDuration / 2 * 1000 : 5 * 1000;\n                this.mediaUpdateTimeout = window.setTimeout(() => this.load(), delay);\n                return;\n            } // because the playlists are internal to the manifest, load should either load the\n            // main manifest, or do nothing but trigger an event\n\n            if (!this.started) {\n                this.start();\n                return;\n            }\n            if (media && !media.endList) {\n                // Check to see if this is the main loader and the MUP was cleared (this happens\n                // when the loader was paused). `media` should be set at this point since one is always\n                // set during `start()`.\n                if (this.isMain_ && !this.minimumUpdatePeriodTimeout_) {\n                    // Trigger minimumUpdatePeriod to refresh the main manifest\n                    this.trigger('minimumUpdatePeriod'); // Since there was no prior minimumUpdatePeriodTimeout it should be recreated\n\n                    this.updateMinimumUpdatePeriodTimeout_();\n                }\n                this.trigger('mediaupdatetimeout');\n            } else {\n                this.trigger('loadedplaylist');\n            }\n        }\n        start() {\n            this.started = true; // We don't need to request the main manifest again\n            // Call this asynchronously to match the xhr request behavior below\n\n            if (!this.isMain_) {\n                this.mediaRequest_ = window.setTimeout(() => this.haveMain_(), 0);\n                return;\n            }\n            this.requestMain_((req, mainChanged) => {\n                this.haveMain_();\n                if (!this.hasPendingRequest() && !this.media_) {\n                    this.media(this.mainPlaylistLoader_.main.playlists[0]);\n                }\n            });\n        }\n        requestMain_(cb) {\n            this.request = this.vhs_.xhr({\n                uri: this.mainPlaylistLoader_.srcUrl,\n                withCredentials: this.withCredentials\n            }, (error, req) => {\n                if (this.requestErrored_(error, req)) {\n                    if (this.state === 'HAVE_NOTHING') {\n                        this.started = false;\n                    }\n                    return;\n                }\n                const mainChanged = req.responseText !== this.mainPlaylistLoader_.mainXml_;\n                this.mainPlaylistLoader_.mainXml_ = req.responseText;\n                if (req.responseHeaders && req.responseHeaders.date) {\n                    this.mainLoaded_ = Date.parse(req.responseHeaders.date);\n                } else {\n                    this.mainLoaded_ = Date.now();\n                }\n                this.mainPlaylistLoader_.srcUrl = resolveManifestRedirect(this.mainPlaylistLoader_.srcUrl, req);\n                if (mainChanged) {\n                    this.handleMain_();\n                    this.syncClientServerClock_(() => {\n                        return cb(req, mainChanged);\n                    });\n                    return;\n                }\n                return cb(req, mainChanged);\n            });\n        }\n        /**\n         * Parses the main xml for UTCTiming node to sync the client clock to the server\n         * clock. If the UTCTiming node requires a HEAD or GET request, that request is made.\n         *\n         * @param {Function} done\n         *        Function to call when clock sync has completed\n         */\n\n        syncClientServerClock_(done) {\n            const utcTiming = parseUTCTiming(this.mainPlaylistLoader_.mainXml_); // No UTCTiming element found in the mpd. Use Date header from mpd request as the\n            // server clock\n\n            if (utcTiming === null) {\n                this.mainPlaylistLoader_.clientOffset_ = this.mainLoaded_ - Date.now();\n                return done();\n            }\n            if (utcTiming.method === 'DIRECT') {\n                this.mainPlaylistLoader_.clientOffset_ = utcTiming.value - Date.now();\n                return done();\n            }\n            this.request = this.vhs_.xhr({\n                uri: resolveUrl(this.mainPlaylistLoader_.srcUrl, utcTiming.value),\n                method: utcTiming.method,\n                withCredentials: this.withCredentials\n            }, (error, req) => {\n                // disposed\n                if (!this.request) {\n                    return;\n                }\n                if (error) {\n                    // sync request failed, fall back to using date header from mpd\n                    // TODO: log warning\n                    this.mainPlaylistLoader_.clientOffset_ = this.mainLoaded_ - Date.now();\n                    return done();\n                }\n                let serverTime;\n                if (utcTiming.method === 'HEAD') {\n                    if (!req.responseHeaders || !req.responseHeaders.date) {\n                        // expected date header not preset, fall back to using date header from mpd\n                        // TODO: log warning\n                        serverTime = this.mainLoaded_;\n                    } else {\n                        serverTime = Date.parse(req.responseHeaders.date);\n                    }\n                } else {\n                    serverTime = Date.parse(req.responseText);\n                }\n                this.mainPlaylistLoader_.clientOffset_ = serverTime - Date.now();\n                done();\n            });\n        }\n        haveMain_() {\n            this.state = 'HAVE_MAIN_MANIFEST';\n            if (this.isMain_) {\n                // We have the main playlist at this point, so\n                // trigger this to allow PlaylistController\n                // to make an initial playlist selection\n                this.trigger('loadedplaylist');\n            } else if (!this.media_) {\n                // no media playlist was specifically selected so select\n                // the one the child playlist loader was created with\n                this.media(this.childPlaylist_);\n            }\n        }\n        handleMain_() {\n            // clear media request\n            this.mediaRequest_ = null;\n            const oldMain = this.mainPlaylistLoader_.main;\n            let newMain = parseMainXml({\n                mainXml: this.mainPlaylistLoader_.mainXml_,\n                srcUrl: this.mainPlaylistLoader_.srcUrl,\n                clientOffset: this.mainPlaylistLoader_.clientOffset_,\n                sidxMapping: this.mainPlaylistLoader_.sidxMapping_,\n                previousManifest: oldMain\n            }); // if we have an old main to compare the new main against\n\n            if (oldMain) {\n                newMain = updateMain(oldMain, newMain, this.mainPlaylistLoader_.sidxMapping_);\n            } // only update main if we have a new main\n\n            this.mainPlaylistLoader_.main = newMain ? newMain : oldMain;\n            const location = this.mainPlaylistLoader_.main.locations && this.mainPlaylistLoader_.main.locations[0];\n            if (location && location !== this.mainPlaylistLoader_.srcUrl) {\n                this.mainPlaylistLoader_.srcUrl = location;\n            }\n            if (!oldMain || newMain && newMain.minimumUpdatePeriod !== oldMain.minimumUpdatePeriod) {\n                this.updateMinimumUpdatePeriodTimeout_();\n            }\n            return Boolean(newMain);\n        }\n        updateMinimumUpdatePeriodTimeout_() {\n            const mpl = this.mainPlaylistLoader_; // cancel any pending creation of mup on media\n            // a new one will be added if needed.\n\n            if (mpl.createMupOnMedia_) {\n                mpl.off('loadedmetadata', mpl.createMupOnMedia_);\n                mpl.createMupOnMedia_ = null;\n            } // clear any pending timeouts\n\n            if (mpl.minimumUpdatePeriodTimeout_) {\n                window.clearTimeout(mpl.minimumUpdatePeriodTimeout_);\n                mpl.minimumUpdatePeriodTimeout_ = null;\n            }\n            let mup = mpl.main && mpl.main.minimumUpdatePeriod; // If the minimumUpdatePeriod has a value of 0, that indicates that the current\n            // MPD has no future validity, so a new one will need to be acquired when new\n            // media segments are to be made available. Thus, we use the target duration\n            // in this case\n\n            if (mup === 0) {\n                if (mpl.media()) {\n                    mup = mpl.media().targetDuration * 1000;\n                } else {\n                    mpl.createMupOnMedia_ = mpl.updateMinimumUpdatePeriodTimeout_;\n                    mpl.one('loadedmetadata', mpl.createMupOnMedia_);\n                }\n            } // if minimumUpdatePeriod is invalid or <= zero, which\n            // can happen when a live video becomes VOD. skip timeout\n            // creation.\n\n            if (typeof mup !== 'number' || mup <= 0) {\n                if (mup < 0) {\n                    this.logger_(`found invalid minimumUpdatePeriod of ${mup}, not setting a timeout`);\n                }\n                return;\n            }\n            this.createMUPTimeout_(mup);\n        }\n        createMUPTimeout_(mup) {\n            const mpl = this.mainPlaylistLoader_;\n            mpl.minimumUpdatePeriodTimeout_ = window.setTimeout(() => {\n                mpl.minimumUpdatePeriodTimeout_ = null;\n                mpl.trigger('minimumUpdatePeriod');\n                mpl.createMUPTimeout_(mup);\n            }, mup);\n        }\n        /**\n         * Sends request to refresh the main xml and updates the parsed main manifest\n         */\n\n        refreshXml_() {\n            this.requestMain_((req, mainChanged) => {\n                if (!mainChanged) {\n                    return;\n                }\n                if (this.media_) {\n                    this.media_ = this.mainPlaylistLoader_.main.playlists[this.media_.id];\n                } // This will filter out updated sidx info from the mapping\n\n                this.mainPlaylistLoader_.sidxMapping_ = filterChangedSidxMappings(this.mainPlaylistLoader_.main, this.mainPlaylistLoader_.sidxMapping_);\n                this.addSidxSegments_(this.media(), this.state, sidxChanged => {\n                    // TODO: do we need to reload the current playlist?\n                    this.refreshMedia_(this.media().id);\n                });\n            });\n        }\n        /**\n         * Refreshes the media playlist by re-parsing the main xml and updating playlist\n         * references. If this is an alternate loader, the updated parsed manifest is retrieved\n         * from the main loader.\n         */\n\n        refreshMedia_(mediaID) {\n            if (!mediaID) {\n                throw new Error('refreshMedia_ must take a media id');\n            } // for main we have to reparse the main xml\n            // to re-create segments based on current timing values\n            // which may change media. We only skip updating the main manifest\n            // if this is the first time this.media_ is being set.\n            // as main was just parsed in that case.\n\n            if (this.media_ && this.isMain_) {\n                this.handleMain_();\n            }\n            const playlists = this.mainPlaylistLoader_.main.playlists;\n            const mediaChanged = !this.media_ || this.media_ !== playlists[mediaID];\n            if (mediaChanged) {\n                this.media_ = playlists[mediaID];\n            } else {\n                this.trigger('playlistunchanged');\n            }\n            if (!this.mediaUpdateTimeout) {\n                const createMediaUpdateTimeout = () => {\n                    if (this.media().endList) {\n                        return;\n                    }\n                    this.mediaUpdateTimeout = window.setTimeout(() => {\n                        this.trigger('mediaupdatetimeout');\n                        createMediaUpdateTimeout();\n                    }, refreshDelay(this.media(), Boolean(mediaChanged)));\n                };\n                createMediaUpdateTimeout();\n            }\n            this.trigger('loadedplaylist');\n        }\n    }\n    var Config = {\n        GOAL_BUFFER_LENGTH: 30,\n        MAX_GOAL_BUFFER_LENGTH: 60,\n        BACK_BUFFER_LENGTH: 30,\n        GOAL_BUFFER_LENGTH_RATE: 1,\n        // 0.5 MB/s\n        INITIAL_BANDWIDTH: 4194304,\n        // A fudge factor to apply to advertised playlist bitrates to account for\n        // temporary flucations in client bandwidth\n        BANDWIDTH_VARIANCE: 1.2,\n        // How much of the buffer must be filled before we consider upswitching\n        BUFFER_LOW_WATER_LINE: 0,\n        MAX_BUFFER_LOW_WATER_LINE: 30,\n        // TODO: Remove this when experimentalBufferBasedABR is removed\n        EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE: 16,\n        BUFFER_LOW_WATER_LINE_RATE: 1,\n        // If the buffer is greater than the high water line, we won't switch down\n        BUFFER_HIGH_WATER_LINE: 30\n    };\n    const stringToArrayBuffer = string => {\n        const view = new Uint8Array(new ArrayBuffer(string.length));\n        for (let i = 0; i < string.length; i++) {\n            view[i] = string.charCodeAt(i);\n        }\n        return view.buffer;\n    };\n\n    /* global Blob, BlobBuilder, Worker */\n    // unify worker interface\n    const browserWorkerPolyFill = function (workerObj) {\n        // node only supports on/off\n        workerObj.on = workerObj.addEventListener;\n        workerObj.off = workerObj.removeEventListener;\n        return workerObj;\n    };\n    const createObjectURL = function (str) {\n        try {\n            return URL.createObjectURL(new Blob([str], {\n                type: 'application/javascript'\n            }));\n        } catch (e) {\n            const blob = new BlobBuilder();\n            blob.append(str);\n            return URL.createObjectURL(blob.getBlob());\n        }\n    };\n    const factory = function (code) {\n        return function () {\n            const objectUrl = createObjectURL(code);\n            const worker = browserWorkerPolyFill(new Worker(objectUrl));\n            worker.objURL = objectUrl;\n            const terminate = worker.terminate;\n            worker.on = worker.addEventListener;\n            worker.off = worker.removeEventListener;\n            worker.terminate = function () {\n                URL.revokeObjectURL(objectUrl);\n                return terminate.call(this);\n            };\n            return worker;\n        };\n    };\n    const transform = function (code) {\n        return `var browserWorkerPolyFill = ${browserWorkerPolyFill.toString()};\\n` + 'browserWorkerPolyFill(self);\\n' + code;\n    };\n    const getWorkerString = function (fn) {\n        return fn.toString().replace(/^function.+?{/, '').slice(0, -1);\n    };\n\n    /* rollup-plugin-worker-factory start for worker!/Users/ddashkevich/projects/http-streaming/src/transmuxer-worker.js */\n    const workerCode$1 = transform(getWorkerString(function () {\n        var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * A lightweight readable stream implemention that handles event dispatching.\n         * Objects that inherit from streams should call init in their constructors.\n         */\n\n        var Stream$8 = function () {\n            this.init = function () {\n                var listeners = {};\n                /**\n                 * Add a listener for a specified event type.\n                 * @param type {string} the event name\n                 * @param listener {function} the callback to be invoked when an event of\n                 * the specified type occurs\n                 */\n\n                this.on = function (type, listener) {\n                    if (!listeners[type]) {\n                        listeners[type] = [];\n                    }\n                    listeners[type] = listeners[type].concat(listener);\n                };\n                /**\n                 * Remove a listener for a specified event type.\n                 * @param type {string} the event name\n                 * @param listener {function} a function previously registered for this\n                 * type of event through `on`\n                 */\n\n                this.off = function (type, listener) {\n                    var index;\n                    if (!listeners[type]) {\n                        return false;\n                    }\n                    index = listeners[type].indexOf(listener);\n                    listeners[type] = listeners[type].slice();\n                    listeners[type].splice(index, 1);\n                    return index > -1;\n                };\n                /**\n                 * Trigger an event of the specified type on this stream. Any additional\n                 * arguments to this function are passed as parameters to event listeners.\n                 * @param type {string} the event name\n                 */\n\n                this.trigger = function (type) {\n                    var callbacks, i, length, args;\n                    callbacks = listeners[type];\n                    if (!callbacks) {\n                        return;\n                    } // Slicing the arguments on every invocation of this method\n                    // can add a significant amount of overhead. Avoid the\n                    // intermediate object creation for the common case of a\n                    // single callback argument\n\n                    if (arguments.length === 2) {\n                        length = callbacks.length;\n                        for (i = 0; i < length; ++i) {\n                            callbacks[i].call(this, arguments[1]);\n                        }\n                    } else {\n                        args = [];\n                        i = arguments.length;\n                        for (i = 1; i < arguments.length; ++i) {\n                            args.push(arguments[i]);\n                        }\n                        length = callbacks.length;\n                        for (i = 0; i < length; ++i) {\n                            callbacks[i].apply(this, args);\n                        }\n                    }\n                };\n                /**\n                 * Destroys the stream and cleans up.\n                 */\n\n                this.dispose = function () {\n                    listeners = {};\n                };\n            };\n        };\n        /**\n         * Forwards all `data` events on this stream to the destination stream. The\n         * destination stream should provide a method `push` to receive the data\n         * events as they arrive.\n         * @param destination {stream} the stream that will receive all `data` events\n         * @param autoFlush {boolean} if false, we will not call `flush` on the destination\n         *                            when the current stream emits a 'done' event\n         * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n         */\n\n        Stream$8.prototype.pipe = function (destination) {\n            this.on('data', function (data) {\n                destination.push(data);\n            });\n            this.on('done', function (flushSource) {\n                destination.flush(flushSource);\n            });\n            this.on('partialdone', function (flushSource) {\n                destination.partialFlush(flushSource);\n            });\n            this.on('endedtimeline', function (flushSource) {\n                destination.endTimeline(flushSource);\n            });\n            this.on('reset', function (flushSource) {\n                destination.reset(flushSource);\n            });\n            return destination;\n        }; // Default stream functions that are expected to be overridden to perform\n        // actual work. These are provided by the prototype as a sort of no-op\n        // implementation so that we don't have to check for their existence in the\n        // `pipe` function above.\n\n        Stream$8.prototype.push = function (data) {\n            this.trigger('data', data);\n        };\n        Stream$8.prototype.flush = function (flushSource) {\n            this.trigger('done', flushSource);\n        };\n        Stream$8.prototype.partialFlush = function (flushSource) {\n            this.trigger('partialdone', flushSource);\n        };\n        Stream$8.prototype.endTimeline = function (flushSource) {\n            this.trigger('endedtimeline', flushSource);\n        };\n        Stream$8.prototype.reset = function (flushSource) {\n            this.trigger('reset', flushSource);\n        };\n        var stream = Stream$8;\n        var MAX_UINT32$1 = Math.pow(2, 32);\n        var getUint64$3 = function (uint8) {\n            var dv = new DataView(uint8.buffer, uint8.byteOffset, uint8.byteLength);\n            var value;\n            if (dv.getBigUint64) {\n                value = dv.getBigUint64(0);\n                if (value < Number.MAX_SAFE_INTEGER) {\n                    return Number(value);\n                }\n                return value;\n            }\n            return dv.getUint32(0) * MAX_UINT32$1 + dv.getUint32(4);\n        };\n        var numbers = {\n            getUint64: getUint64$3,\n            MAX_UINT32: MAX_UINT32$1\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Functions that generate fragmented MP4s suitable for use with Media\n         * Source Extensions.\n         */\n\n        var MAX_UINT32 = numbers.MAX_UINT32;\n        var box, dinf, esds, ftyp, mdat, mfhd, minf, moof, moov, mvex, mvhd, trak, tkhd, mdia, mdhd, hdlr, sdtp, stbl, stsd, traf, trex, trun$1, types, MAJOR_BRAND, MINOR_VERSION, AVC1_BRAND, VIDEO_HDLR, AUDIO_HDLR, HDLR_TYPES, VMHD, SMHD, DREF, STCO, STSC, STSZ, STTS; // pre-calculate constants\n\n        (function () {\n            var i;\n            types = {\n                avc1: [],\n                // codingname\n                avcC: [],\n                btrt: [],\n                dinf: [],\n                dref: [],\n                esds: [],\n                ftyp: [],\n                hdlr: [],\n                mdat: [],\n                mdhd: [],\n                mdia: [],\n                mfhd: [],\n                minf: [],\n                moof: [],\n                moov: [],\n                mp4a: [],\n                // codingname\n                mvex: [],\n                mvhd: [],\n                pasp: [],\n                sdtp: [],\n                smhd: [],\n                stbl: [],\n                stco: [],\n                stsc: [],\n                stsd: [],\n                stsz: [],\n                stts: [],\n                styp: [],\n                tfdt: [],\n                tfhd: [],\n                traf: [],\n                trak: [],\n                trun: [],\n                trex: [],\n                tkhd: [],\n                vmhd: []\n            }; // In environments where Uint8Array is undefined (e.g., IE8), skip set up so that we\n            // don't throw an error\n\n            if (typeof Uint8Array === 'undefined') {\n                return;\n            }\n            for (i in types) {\n                if (types.hasOwnProperty(i)) {\n                    types[i] = [i.charCodeAt(0), i.charCodeAt(1), i.charCodeAt(2), i.charCodeAt(3)];\n                }\n            }\n            MAJOR_BRAND = new Uint8Array(['i'.charCodeAt(0), 's'.charCodeAt(0), 'o'.charCodeAt(0), 'm'.charCodeAt(0)]);\n            AVC1_BRAND = new Uint8Array(['a'.charCodeAt(0), 'v'.charCodeAt(0), 'c'.charCodeAt(0), '1'.charCodeAt(0)]);\n            MINOR_VERSION = new Uint8Array([0, 0, 0, 1]);\n            VIDEO_HDLR = new Uint8Array([0x00,\n                // version 0\n                0x00, 0x00, 0x00,\n                // flags\n                0x00, 0x00, 0x00, 0x00,\n                // pre_defined\n                0x76, 0x69, 0x64, 0x65,\n                // handler_type: 'vide'\n                0x00, 0x00, 0x00, 0x00,\n                // reserved\n                0x00, 0x00, 0x00, 0x00,\n                // reserved\n                0x00, 0x00, 0x00, 0x00,\n                // reserved\n                0x56, 0x69, 0x64, 0x65, 0x6f, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'VideoHandler'\n            ]);\n\n            AUDIO_HDLR = new Uint8Array([0x00,\n                // version 0\n                0x00, 0x00, 0x00,\n                // flags\n                0x00, 0x00, 0x00, 0x00,\n                // pre_defined\n                0x73, 0x6f, 0x75, 0x6e,\n                // handler_type: 'soun'\n                0x00, 0x00, 0x00, 0x00,\n                // reserved\n                0x00, 0x00, 0x00, 0x00,\n                // reserved\n                0x00, 0x00, 0x00, 0x00,\n                // reserved\n                0x53, 0x6f, 0x75, 0x6e, 0x64, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'SoundHandler'\n            ]);\n\n            HDLR_TYPES = {\n                video: VIDEO_HDLR,\n                audio: AUDIO_HDLR\n            };\n            DREF = new Uint8Array([0x00,\n                // version 0\n                0x00, 0x00, 0x00,\n                // flags\n                0x00, 0x00, 0x00, 0x01,\n                // entry_count\n                0x00, 0x00, 0x00, 0x0c,\n                // entry_size\n                0x75, 0x72, 0x6c, 0x20,\n                // 'url' type\n                0x00,\n                // version 0\n                0x00, 0x00, 0x01 // entry_flags\n            ]);\n\n            SMHD = new Uint8Array([0x00,\n                // version\n                0x00, 0x00, 0x00,\n                // flags\n                0x00, 0x00,\n                // balance, 0 means centered\n                0x00, 0x00 // reserved\n            ]);\n\n            STCO = new Uint8Array([0x00,\n                // version\n                0x00, 0x00, 0x00,\n                // flags\n                0x00, 0x00, 0x00, 0x00 // entry_count\n            ]);\n\n            STSC = STCO;\n            STSZ = new Uint8Array([0x00,\n                // version\n                0x00, 0x00, 0x00,\n                // flags\n                0x00, 0x00, 0x00, 0x00,\n                // sample_size\n                0x00, 0x00, 0x00, 0x00 // sample_count\n            ]);\n\n            STTS = STCO;\n            VMHD = new Uint8Array([0x00,\n                // version\n                0x00, 0x00, 0x01,\n                // flags\n                0x00, 0x00,\n                // graphicsmode\n                0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // opcolor\n            ]);\n        })();\n\n        box = function (type) {\n            var payload = [],\n                size = 0,\n                i,\n                result,\n                view;\n            for (i = 1; i < arguments.length; i++) {\n                payload.push(arguments[i]);\n            }\n            i = payload.length; // calculate the total size we need to allocate\n\n            while (i--) {\n                size += payload[i].byteLength;\n            }\n            result = new Uint8Array(size + 8);\n            view = new DataView(result.buffer, result.byteOffset, result.byteLength);\n            view.setUint32(0, result.byteLength);\n            result.set(type, 4); // copy the payload into the result\n\n            for (i = 0, size = 8; i < payload.length; i++) {\n                result.set(payload[i], size);\n                size += payload[i].byteLength;\n            }\n            return result;\n        };\n        dinf = function () {\n            return box(types.dinf, box(types.dref, DREF));\n        };\n        esds = function (track) {\n            return box(types.esds, new Uint8Array([0x00,\n                // version\n                0x00, 0x00, 0x00,\n                // flags\n                // ES_Descriptor\n                0x03,\n                // tag, ES_DescrTag\n                0x19,\n                // length\n                0x00, 0x00,\n                // ES_ID\n                0x00,\n                // streamDependenceFlag, URL_flag, reserved, streamPriority\n                // DecoderConfigDescriptor\n                0x04,\n                // tag, DecoderConfigDescrTag\n                0x11,\n                // length\n                0x40,\n                // object type\n                0x15,\n                // streamType\n                0x00, 0x06, 0x00,\n                // bufferSizeDB\n                0x00, 0x00, 0xda, 0xc0,\n                // maxBitrate\n                0x00, 0x00, 0xda, 0xc0,\n                // avgBitrate\n                // DecoderSpecificInfo\n                0x05,\n                // tag, DecoderSpecificInfoTag\n                0x02,\n                // length\n                // ISO/IEC 14496-3, AudioSpecificConfig\n                // for samplingFrequencyIndex see ISO/IEC 13818-7:2006, 8.1.3.2.2, Table 35\n                track.audioobjecttype << 3 | track.samplingfrequencyindex >>> 1, track.samplingfrequencyindex << 7 | track.channelcount << 3, 0x06, 0x01, 0x02 // GASpecificConfig\n            ]));\n        };\n\n        ftyp = function () {\n            return box(types.ftyp, MAJOR_BRAND, MINOR_VERSION, MAJOR_BRAND, AVC1_BRAND);\n        };\n        hdlr = function (type) {\n            return box(types.hdlr, HDLR_TYPES[type]);\n        };\n        mdat = function (data) {\n            return box(types.mdat, data);\n        };\n        mdhd = function (track) {\n            var result = new Uint8Array([0x00,\n                // version 0\n                0x00, 0x00, 0x00,\n                // flags\n                0x00, 0x00, 0x00, 0x02,\n                // creation_time\n                0x00, 0x00, 0x00, 0x03,\n                // modification_time\n                0x00, 0x01, 0x5f, 0x90,\n                // timescale, 90,000 \"ticks\" per second\n                track.duration >>> 24 & 0xFF, track.duration >>> 16 & 0xFF, track.duration >>> 8 & 0xFF, track.duration & 0xFF,\n                // duration\n                0x55, 0xc4,\n                // 'und' language (undetermined)\n                0x00, 0x00]); // Use the sample rate from the track metadata, when it is\n            // defined. The sample rate can be parsed out of an ADTS header, for\n            // instance.\n\n            if (track.samplerate) {\n                result[12] = track.samplerate >>> 24 & 0xFF;\n                result[13] = track.samplerate >>> 16 & 0xFF;\n                result[14] = track.samplerate >>> 8 & 0xFF;\n                result[15] = track.samplerate & 0xFF;\n            }\n            return box(types.mdhd, result);\n        };\n        mdia = function (track) {\n            return box(types.mdia, mdhd(track), hdlr(track.type), minf(track));\n        };\n        mfhd = function (sequenceNumber) {\n            return box(types.mfhd, new Uint8Array([0x00, 0x00, 0x00, 0x00,\n                // flags\n                (sequenceNumber & 0xFF000000) >> 24, (sequenceNumber & 0xFF0000) >> 16, (sequenceNumber & 0xFF00) >> 8, sequenceNumber & 0xFF // sequence_number\n            ]));\n        };\n\n        minf = function (track) {\n            return box(types.minf, track.type === 'video' ? box(types.vmhd, VMHD) : box(types.smhd, SMHD), dinf(), stbl(track));\n        };\n        moof = function (sequenceNumber, tracks) {\n            var trackFragments = [],\n                i = tracks.length; // build traf boxes for each track fragment\n\n            while (i--) {\n                trackFragments[i] = traf(tracks[i]);\n            }\n            return box.apply(null, [types.moof, mfhd(sequenceNumber)].concat(trackFragments));\n        };\n        /**\n         * Returns a movie box.\n         * @param tracks {array} the tracks associated with this movie\n         * @see ISO/IEC 14496-12:2012(E), section 8.2.1\n         */\n\n        moov = function (tracks) {\n            var i = tracks.length,\n                boxes = [];\n            while (i--) {\n                boxes[i] = trak(tracks[i]);\n            }\n            return box.apply(null, [types.moov, mvhd(0xffffffff)].concat(boxes).concat(mvex(tracks)));\n        };\n        mvex = function (tracks) {\n            var i = tracks.length,\n                boxes = [];\n            while (i--) {\n                boxes[i] = trex(tracks[i]);\n            }\n            return box.apply(null, [types.mvex].concat(boxes));\n        };\n        mvhd = function (duration) {\n            var bytes = new Uint8Array([0x00,\n                // version 0\n                0x00, 0x00, 0x00,\n                // flags\n                0x00, 0x00, 0x00, 0x01,\n                // creation_time\n                0x00, 0x00, 0x00, 0x02,\n                // modification_time\n                0x00, 0x01, 0x5f, 0x90,\n                // timescale, 90,000 \"ticks\" per second\n                (duration & 0xFF000000) >> 24, (duration & 0xFF0000) >> 16, (duration & 0xFF00) >> 8, duration & 0xFF,\n                // duration\n                0x00, 0x01, 0x00, 0x00,\n                // 1.0 rate\n                0x01, 0x00,\n                // 1.0 volume\n                0x00, 0x00,\n                // reserved\n                0x00, 0x00, 0x00, 0x00,\n                // reserved\n                0x00, 0x00, 0x00, 0x00,\n                // reserved\n                0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00,\n                // transformation: unity matrix\n                0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\n                // pre_defined\n                0xff, 0xff, 0xff, 0xff // next_track_ID\n            ]);\n\n            return box(types.mvhd, bytes);\n        };\n        sdtp = function (track) {\n            var samples = track.samples || [],\n                bytes = new Uint8Array(4 + samples.length),\n                flags,\n                i; // leave the full box header (4 bytes) all zero\n            // write the sample table\n\n            for (i = 0; i < samples.length; i++) {\n                flags = samples[i].flags;\n                bytes[i + 4] = flags.dependsOn << 4 | flags.isDependedOn << 2 | flags.hasRedundancy;\n            }\n            return box(types.sdtp, bytes);\n        };\n        stbl = function (track) {\n            return box(types.stbl, stsd(track), box(types.stts, STTS), box(types.stsc, STSC), box(types.stsz, STSZ), box(types.stco, STCO));\n        };\n        (function () {\n            var videoSample, audioSample;\n            stsd = function (track) {\n                return box(types.stsd, new Uint8Array([0x00,\n                    // version 0\n                    0x00, 0x00, 0x00,\n                    // flags\n                    0x00, 0x00, 0x00, 0x01]), track.type === 'video' ? videoSample(track) : audioSample(track));\n            };\n            videoSample = function (track) {\n                var sps = track.sps || [],\n                    pps = track.pps || [],\n                    sequenceParameterSets = [],\n                    pictureParameterSets = [],\n                    i,\n                    avc1Box; // assemble the SPSs\n\n                for (i = 0; i < sps.length; i++) {\n                    sequenceParameterSets.push((sps[i].byteLength & 0xFF00) >>> 8);\n                    sequenceParameterSets.push(sps[i].byteLength & 0xFF); // sequenceParameterSetLength\n\n                    sequenceParameterSets = sequenceParameterSets.concat(Array.prototype.slice.call(sps[i])); // SPS\n                } // assemble the PPSs\n\n                for (i = 0; i < pps.length; i++) {\n                    pictureParameterSets.push((pps[i].byteLength & 0xFF00) >>> 8);\n                    pictureParameterSets.push(pps[i].byteLength & 0xFF);\n                    pictureParameterSets = pictureParameterSets.concat(Array.prototype.slice.call(pps[i]));\n                }\n                avc1Box = [types.avc1, new Uint8Array([0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\n                    // reserved\n                    0x00, 0x01,\n                    // data_reference_index\n                    0x00, 0x00,\n                    // pre_defined\n                    0x00, 0x00,\n                    // reserved\n                    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\n                    // pre_defined\n                    (track.width & 0xff00) >> 8, track.width & 0xff,\n                    // width\n                    (track.height & 0xff00) >> 8, track.height & 0xff,\n                    // height\n                    0x00, 0x48, 0x00, 0x00,\n                    // horizresolution\n                    0x00, 0x48, 0x00, 0x00,\n                    // vertresolution\n                    0x00, 0x00, 0x00, 0x00,\n                    // reserved\n                    0x00, 0x01,\n                    // frame_count\n                    0x13, 0x76, 0x69, 0x64, 0x65, 0x6f, 0x6a, 0x73, 0x2d, 0x63, 0x6f, 0x6e, 0x74, 0x72, 0x69, 0x62, 0x2d, 0x68, 0x6c, 0x73, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\n                    // compressorname\n                    0x00, 0x18,\n                    // depth = 24\n                    0x11, 0x11 // pre_defined = -1\n                ]), box(types.avcC, new Uint8Array([0x01,\n                    // configurationVersion\n                    track.profileIdc,\n                    // AVCProfileIndication\n                    track.profileCompatibility,\n                    // profile_compatibility\n                    track.levelIdc,\n                    // AVCLevelIndication\n                    0xff // lengthSizeMinusOne, hard-coded to 4 bytes\n                ].concat([sps.length],\n                    // numOfSequenceParameterSets\n                    sequenceParameterSets,\n                    // \"SPS\"\n                    [pps.length],\n                    // numOfPictureParameterSets\n                    pictureParameterSets // \"PPS\"\n                ))), box(types.btrt, new Uint8Array([0x00, 0x1c, 0x9c, 0x80,\n                    // bufferSizeDB\n                    0x00, 0x2d, 0xc6, 0xc0,\n                    // maxBitrate\n                    0x00, 0x2d, 0xc6, 0xc0 // avgBitrate\n                ]))];\n\n                if (track.sarRatio) {\n                    var hSpacing = track.sarRatio[0],\n                        vSpacing = track.sarRatio[1];\n                    avc1Box.push(box(types.pasp, new Uint8Array([(hSpacing & 0xFF000000) >> 24, (hSpacing & 0xFF0000) >> 16, (hSpacing & 0xFF00) >> 8, hSpacing & 0xFF, (vSpacing & 0xFF000000) >> 24, (vSpacing & 0xFF0000) >> 16, (vSpacing & 0xFF00) >> 8, vSpacing & 0xFF])));\n                }\n                return box.apply(null, avc1Box);\n            };\n            audioSample = function (track) {\n                return box(types.mp4a, new Uint8Array([\n                    // SampleEntry, ISO/IEC 14496-12\n                    0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\n                    // reserved\n                    0x00, 0x01,\n                    // data_reference_index\n                    // AudioSampleEntry, ISO/IEC 14496-12\n                    0x00, 0x00, 0x00, 0x00,\n                    // reserved\n                    0x00, 0x00, 0x00, 0x00,\n                    // reserved\n                    (track.channelcount & 0xff00) >> 8, track.channelcount & 0xff,\n                    // channelcount\n                    (track.samplesize & 0xff00) >> 8, track.samplesize & 0xff,\n                    // samplesize\n                    0x00, 0x00,\n                    // pre_defined\n                    0x00, 0x00,\n                    // reserved\n                    (track.samplerate & 0xff00) >> 8, track.samplerate & 0xff, 0x00, 0x00 // samplerate, 16.16\n                    // MP4AudioSampleEntry, ISO/IEC 14496-14\n                ]), esds(track));\n            };\n        })();\n        tkhd = function (track) {\n            var result = new Uint8Array([0x00,\n                // version 0\n                0x00, 0x00, 0x07,\n                // flags\n                0x00, 0x00, 0x00, 0x00,\n                // creation_time\n                0x00, 0x00, 0x00, 0x00,\n                // modification_time\n                (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF,\n                // track_ID\n                0x00, 0x00, 0x00, 0x00,\n                // reserved\n                (track.duration & 0xFF000000) >> 24, (track.duration & 0xFF0000) >> 16, (track.duration & 0xFF00) >> 8, track.duration & 0xFF,\n                // duration\n                0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\n                // reserved\n                0x00, 0x00,\n                // layer\n                0x00, 0x00,\n                // alternate_group\n                0x01, 0x00,\n                // non-audio track volume\n                0x00, 0x00,\n                // reserved\n                0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00,\n                // transformation: unity matrix\n                (track.width & 0xFF00) >> 8, track.width & 0xFF, 0x00, 0x00,\n                // width\n                (track.height & 0xFF00) >> 8, track.height & 0xFF, 0x00, 0x00 // height\n            ]);\n\n            return box(types.tkhd, result);\n        };\n        /**\n         * Generate a track fragment (traf) box. A traf box collects metadata\n         * about tracks in a movie fragment (moof) box.\n         */\n\n        traf = function (track) {\n            var trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun, sampleDependencyTable, dataOffset, upperWordBaseMediaDecodeTime, lowerWordBaseMediaDecodeTime;\n            trackFragmentHeader = box(types.tfhd, new Uint8Array([0x00,\n                // version 0\n                0x00, 0x00, 0x3a,\n                // flags\n                (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF,\n                // track_ID\n                0x00, 0x00, 0x00, 0x01,\n                // sample_description_index\n                0x00, 0x00, 0x00, 0x00,\n                // default_sample_duration\n                0x00, 0x00, 0x00, 0x00,\n                // default_sample_size\n                0x00, 0x00, 0x00, 0x00 // default_sample_flags\n            ]));\n\n            upperWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime / MAX_UINT32);\n            lowerWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime % MAX_UINT32);\n            trackFragmentDecodeTime = box(types.tfdt, new Uint8Array([0x01,\n                // version 1\n                0x00, 0x00, 0x00,\n                // flags\n                // baseMediaDecodeTime\n                upperWordBaseMediaDecodeTime >>> 24 & 0xFF, upperWordBaseMediaDecodeTime >>> 16 & 0xFF, upperWordBaseMediaDecodeTime >>> 8 & 0xFF, upperWordBaseMediaDecodeTime & 0xFF, lowerWordBaseMediaDecodeTime >>> 24 & 0xFF, lowerWordBaseMediaDecodeTime >>> 16 & 0xFF, lowerWordBaseMediaDecodeTime >>> 8 & 0xFF, lowerWordBaseMediaDecodeTime & 0xFF])); // the data offset specifies the number of bytes from the start of\n            // the containing moof to the first payload byte of the associated\n            // mdat\n\n            dataOffset = 32 +\n                // tfhd\n                20 +\n                // tfdt\n                8 +\n                // traf header\n                16 +\n                // mfhd\n                8 +\n                // moof header\n                8; // mdat header\n            // audio tracks require less metadata\n\n            if (track.type === 'audio') {\n                trackFragmentRun = trun$1(track, dataOffset);\n                return box(types.traf, trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun);\n            } // video tracks should contain an independent and disposable samples\n            // box (sdtp)\n            // generate one and adjust offsets to match\n\n            sampleDependencyTable = sdtp(track);\n            trackFragmentRun = trun$1(track, sampleDependencyTable.length + dataOffset);\n            return box(types.traf, trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun, sampleDependencyTable);\n        };\n        /**\n         * Generate a track box.\n         * @param track {object} a track definition\n         * @return {Uint8Array} the track box\n         */\n\n        trak = function (track) {\n            track.duration = track.duration || 0xffffffff;\n            return box(types.trak, tkhd(track), mdia(track));\n        };\n        trex = function (track) {\n            var result = new Uint8Array([0x00,\n                // version 0\n                0x00, 0x00, 0x00,\n                // flags\n                (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF,\n                // track_ID\n                0x00, 0x00, 0x00, 0x01,\n                // default_sample_description_index\n                0x00, 0x00, 0x00, 0x00,\n                // default_sample_duration\n                0x00, 0x00, 0x00, 0x00,\n                // default_sample_size\n                0x00, 0x01, 0x00, 0x01 // default_sample_flags\n            ]); // the last two bytes of default_sample_flags is the sample\n            // degradation priority, a hint about the importance of this sample\n            // relative to others. Lower the degradation priority for all sample\n            // types other than video.\n\n            if (track.type !== 'video') {\n                result[result.length - 1] = 0x00;\n            }\n            return box(types.trex, result);\n        };\n        (function () {\n            var audioTrun, videoTrun, trunHeader; // This method assumes all samples are uniform. That is, if a\n            // duration is present for the first sample, it will be present for\n            // all subsequent samples.\n            // see ISO/IEC 14496-12:2012, Section 8.8.8.1\n\n            trunHeader = function (samples, offset) {\n                var durationPresent = 0,\n                    sizePresent = 0,\n                    flagsPresent = 0,\n                    compositionTimeOffset = 0; // trun flag constants\n\n                if (samples.length) {\n                    if (samples[0].duration !== undefined) {\n                        durationPresent = 0x1;\n                    }\n                    if (samples[0].size !== undefined) {\n                        sizePresent = 0x2;\n                    }\n                    if (samples[0].flags !== undefined) {\n                        flagsPresent = 0x4;\n                    }\n                    if (samples[0].compositionTimeOffset !== undefined) {\n                        compositionTimeOffset = 0x8;\n                    }\n                }\n                return [0x00,\n                    // version 0\n                    0x00, durationPresent | sizePresent | flagsPresent | compositionTimeOffset, 0x01,\n                    // flags\n                    (samples.length & 0xFF000000) >>> 24, (samples.length & 0xFF0000) >>> 16, (samples.length & 0xFF00) >>> 8, samples.length & 0xFF,\n                    // sample_count\n                    (offset & 0xFF000000) >>> 24, (offset & 0xFF0000) >>> 16, (offset & 0xFF00) >>> 8, offset & 0xFF // data_offset\n                ];\n            };\n\n            videoTrun = function (track, offset) {\n                var bytesOffest, bytes, header, samples, sample, i;\n                samples = track.samples || [];\n                offset += 8 + 12 + 16 * samples.length;\n                header = trunHeader(samples, offset);\n                bytes = new Uint8Array(header.length + samples.length * 16);\n                bytes.set(header);\n                bytesOffest = header.length;\n                for (i = 0; i < samples.length; i++) {\n                    sample = samples[i];\n                    bytes[bytesOffest++] = (sample.duration & 0xFF000000) >>> 24;\n                    bytes[bytesOffest++] = (sample.duration & 0xFF0000) >>> 16;\n                    bytes[bytesOffest++] = (sample.duration & 0xFF00) >>> 8;\n                    bytes[bytesOffest++] = sample.duration & 0xFF; // sample_duration\n\n                    bytes[bytesOffest++] = (sample.size & 0xFF000000) >>> 24;\n                    bytes[bytesOffest++] = (sample.size & 0xFF0000) >>> 16;\n                    bytes[bytesOffest++] = (sample.size & 0xFF00) >>> 8;\n                    bytes[bytesOffest++] = sample.size & 0xFF; // sample_size\n\n                    bytes[bytesOffest++] = sample.flags.isLeading << 2 | sample.flags.dependsOn;\n                    bytes[bytesOffest++] = sample.flags.isDependedOn << 6 | sample.flags.hasRedundancy << 4 | sample.flags.paddingValue << 1 | sample.flags.isNonSyncSample;\n                    bytes[bytesOffest++] = sample.flags.degradationPriority & 0xF0 << 8;\n                    bytes[bytesOffest++] = sample.flags.degradationPriority & 0x0F; // sample_flags\n\n                    bytes[bytesOffest++] = (sample.compositionTimeOffset & 0xFF000000) >>> 24;\n                    bytes[bytesOffest++] = (sample.compositionTimeOffset & 0xFF0000) >>> 16;\n                    bytes[bytesOffest++] = (sample.compositionTimeOffset & 0xFF00) >>> 8;\n                    bytes[bytesOffest++] = sample.compositionTimeOffset & 0xFF; // sample_composition_time_offset\n                }\n\n                return box(types.trun, bytes);\n            };\n            audioTrun = function (track, offset) {\n                var bytes, bytesOffest, header, samples, sample, i;\n                samples = track.samples || [];\n                offset += 8 + 12 + 8 * samples.length;\n                header = trunHeader(samples, offset);\n                bytes = new Uint8Array(header.length + samples.length * 8);\n                bytes.set(header);\n                bytesOffest = header.length;\n                for (i = 0; i < samples.length; i++) {\n                    sample = samples[i];\n                    bytes[bytesOffest++] = (sample.duration & 0xFF000000) >>> 24;\n                    bytes[bytesOffest++] = (sample.duration & 0xFF0000) >>> 16;\n                    bytes[bytesOffest++] = (sample.duration & 0xFF00) >>> 8;\n                    bytes[bytesOffest++] = sample.duration & 0xFF; // sample_duration\n\n                    bytes[bytesOffest++] = (sample.size & 0xFF000000) >>> 24;\n                    bytes[bytesOffest++] = (sample.size & 0xFF0000) >>> 16;\n                    bytes[bytesOffest++] = (sample.size & 0xFF00) >>> 8;\n                    bytes[bytesOffest++] = sample.size & 0xFF; // sample_size\n                }\n\n                return box(types.trun, bytes);\n            };\n            trun$1 = function (track, offset) {\n                if (track.type === 'audio') {\n                    return audioTrun(track, offset);\n                }\n                return videoTrun(track, offset);\n            };\n        })();\n        var mp4Generator = {\n            ftyp: ftyp,\n            mdat: mdat,\n            moof: moof,\n            moov: moov,\n            initSegment: function (tracks) {\n                var fileType = ftyp(),\n                    movie = moov(tracks),\n                    result;\n                result = new Uint8Array(fileType.byteLength + movie.byteLength);\n                result.set(fileType);\n                result.set(movie, fileType.byteLength);\n                return result;\n            }\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n            // composed of the nal units that make up that frame\n            // Also keep track of cummulative data about the frame from the nal units such\n            // as the frame duration, starting pts, etc.\n\n        var groupNalsIntoFrames = function (nalUnits) {\n                var i,\n                    currentNal,\n                    currentFrame = [],\n                    frames = []; // TODO added for LHLS, make sure this is OK\n\n                frames.byteLength = 0;\n                frames.nalCount = 0;\n                frames.duration = 0;\n                currentFrame.byteLength = 0;\n                for (i = 0; i < nalUnits.length; i++) {\n                    currentNal = nalUnits[i]; // Split on 'aud'-type nal units\n\n                    if (currentNal.nalUnitType === 'access_unit_delimiter_rbsp') {\n                        // Since the very first nal unit is expected to be an AUD\n                        // only push to the frames array when currentFrame is not empty\n                        if (currentFrame.length) {\n                            currentFrame.duration = currentNal.dts - currentFrame.dts; // TODO added for LHLS, make sure this is OK\n\n                            frames.byteLength += currentFrame.byteLength;\n                            frames.nalCount += currentFrame.length;\n                            frames.duration += currentFrame.duration;\n                            frames.push(currentFrame);\n                        }\n                        currentFrame = [currentNal];\n                        currentFrame.byteLength = currentNal.data.byteLength;\n                        currentFrame.pts = currentNal.pts;\n                        currentFrame.dts = currentNal.dts;\n                    } else {\n                        // Specifically flag key frames for ease of use later\n                        if (currentNal.nalUnitType === 'slice_layer_without_partitioning_rbsp_idr') {\n                            currentFrame.keyFrame = true;\n                        }\n                        currentFrame.duration = currentNal.dts - currentFrame.dts;\n                        currentFrame.byteLength += currentNal.data.byteLength;\n                        currentFrame.push(currentNal);\n                    }\n                } // For the last frame, use the duration of the previous frame if we\n                // have nothing better to go on\n\n                if (frames.length && (!currentFrame.duration || currentFrame.duration <= 0)) {\n                    currentFrame.duration = frames[frames.length - 1].duration;\n                } // Push the final frame\n                // TODO added for LHLS, make sure this is OK\n\n                frames.byteLength += currentFrame.byteLength;\n                frames.nalCount += currentFrame.length;\n                frames.duration += currentFrame.duration;\n                frames.push(currentFrame);\n                return frames;\n            }; // Convert an array of frames into an array of Gop with each Gop being composed\n        // of the frames that make up that Gop\n        // Also keep track of cummulative data about the Gop from the frames such as the\n        // Gop duration, starting pts, etc.\n\n        var groupFramesIntoGops = function (frames) {\n            var i,\n                currentFrame,\n                currentGop = [],\n                gops = []; // We must pre-set some of the values on the Gop since we\n            // keep running totals of these values\n\n            currentGop.byteLength = 0;\n            currentGop.nalCount = 0;\n            currentGop.duration = 0;\n            currentGop.pts = frames[0].pts;\n            currentGop.dts = frames[0].dts; // store some metadata about all the Gops\n\n            gops.byteLength = 0;\n            gops.nalCount = 0;\n            gops.duration = 0;\n            gops.pts = frames[0].pts;\n            gops.dts = frames[0].dts;\n            for (i = 0; i < frames.length; i++) {\n                currentFrame = frames[i];\n                if (currentFrame.keyFrame) {\n                    // Since the very first frame is expected to be an keyframe\n                    // only push to the gops array when currentGop is not empty\n                    if (currentGop.length) {\n                        gops.push(currentGop);\n                        gops.byteLength += currentGop.byteLength;\n                        gops.nalCount += currentGop.nalCount;\n                        gops.duration += currentGop.duration;\n                    }\n                    currentGop = [currentFrame];\n                    currentGop.nalCount = currentFrame.length;\n                    currentGop.byteLength = currentFrame.byteLength;\n                    currentGop.pts = currentFrame.pts;\n                    currentGop.dts = currentFrame.dts;\n                    currentGop.duration = currentFrame.duration;\n                } else {\n                    currentGop.duration += currentFrame.duration;\n                    currentGop.nalCount += currentFrame.length;\n                    currentGop.byteLength += currentFrame.byteLength;\n                    currentGop.push(currentFrame);\n                }\n            }\n            if (gops.length && currentGop.duration <= 0) {\n                currentGop.duration = gops[gops.length - 1].duration;\n            }\n            gops.byteLength += currentGop.byteLength;\n            gops.nalCount += currentGop.nalCount;\n            gops.duration += currentGop.duration; // push the final Gop\n\n            gops.push(currentGop);\n            return gops;\n        };\n        /*\n     * Search for the first keyframe in the GOPs and throw away all frames\n     * until that keyframe. Then extend the duration of the pulled keyframe\n     * and pull the PTS and DTS of the keyframe so that it covers the time\n     * range of the frames that were disposed.\n     *\n     * @param {Array} gops video GOPs\n     * @returns {Array} modified video GOPs\n     */\n\n        var extendFirstKeyFrame = function (gops) {\n            var currentGop;\n            if (!gops[0][0].keyFrame && gops.length > 1) {\n                // Remove the first GOP\n                currentGop = gops.shift();\n                gops.byteLength -= currentGop.byteLength;\n                gops.nalCount -= currentGop.nalCount; // Extend the first frame of what is now the\n                // first gop to cover the time period of the\n                // frames we just removed\n\n                gops[0][0].dts = currentGop.dts;\n                gops[0][0].pts = currentGop.pts;\n                gops[0][0].duration += currentGop.duration;\n            }\n            return gops;\n        };\n        /**\n         * Default sample object\n         * see ISO/IEC 14496-12:2012, section 8.6.4.3\n         */\n\n        var createDefaultSample = function () {\n            return {\n                size: 0,\n                flags: {\n                    isLeading: 0,\n                    dependsOn: 1,\n                    isDependedOn: 0,\n                    hasRedundancy: 0,\n                    degradationPriority: 0,\n                    isNonSyncSample: 1\n                }\n            };\n        };\n        /*\n     * Collates information from a video frame into an object for eventual\n     * entry into an MP4 sample table.\n     *\n     * @param {Object} frame the video frame\n     * @param {Number} dataOffset the byte offset to position the sample\n     * @return {Object} object containing sample table info for a frame\n     */\n\n        var sampleForFrame = function (frame, dataOffset) {\n            var sample = createDefaultSample();\n            sample.dataOffset = dataOffset;\n            sample.compositionTimeOffset = frame.pts - frame.dts;\n            sample.duration = frame.duration;\n            sample.size = 4 * frame.length; // Space for nal unit size\n\n            sample.size += frame.byteLength;\n            if (frame.keyFrame) {\n                sample.flags.dependsOn = 2;\n                sample.flags.isNonSyncSample = 0;\n            }\n            return sample;\n        }; // generate the track's sample table from an array of gops\n\n        var generateSampleTable$1 = function (gops, baseDataOffset) {\n            var h,\n                i,\n                sample,\n                currentGop,\n                currentFrame,\n                dataOffset = baseDataOffset || 0,\n                samples = [];\n            for (h = 0; h < gops.length; h++) {\n                currentGop = gops[h];\n                for (i = 0; i < currentGop.length; i++) {\n                    currentFrame = currentGop[i];\n                    sample = sampleForFrame(currentFrame, dataOffset);\n                    dataOffset += sample.size;\n                    samples.push(sample);\n                }\n            }\n            return samples;\n        }; // generate the track's raw mdat data from an array of gops\n\n        var concatenateNalData = function (gops) {\n            var h,\n                i,\n                j,\n                currentGop,\n                currentFrame,\n                currentNal,\n                dataOffset = 0,\n                nalsByteLength = gops.byteLength,\n                numberOfNals = gops.nalCount,\n                totalByteLength = nalsByteLength + 4 * numberOfNals,\n                data = new Uint8Array(totalByteLength),\n                view = new DataView(data.buffer); // For each Gop..\n\n            for (h = 0; h < gops.length; h++) {\n                currentGop = gops[h]; // For each Frame..\n\n                for (i = 0; i < currentGop.length; i++) {\n                    currentFrame = currentGop[i]; // For each NAL..\n\n                    for (j = 0; j < currentFrame.length; j++) {\n                        currentNal = currentFrame[j];\n                        view.setUint32(dataOffset, currentNal.data.byteLength);\n                        dataOffset += 4;\n                        data.set(currentNal.data, dataOffset);\n                        dataOffset += currentNal.data.byteLength;\n                    }\n                }\n            }\n            return data;\n        }; // generate the track's sample table from a frame\n\n        var generateSampleTableForFrame = function (frame, baseDataOffset) {\n            var sample,\n                dataOffset = baseDataOffset || 0,\n                samples = [];\n            sample = sampleForFrame(frame, dataOffset);\n            samples.push(sample);\n            return samples;\n        }; // generate the track's raw mdat data from a frame\n\n        var concatenateNalDataForFrame = function (frame) {\n            var i,\n                currentNal,\n                dataOffset = 0,\n                nalsByteLength = frame.byteLength,\n                numberOfNals = frame.length,\n                totalByteLength = nalsByteLength + 4 * numberOfNals,\n                data = new Uint8Array(totalByteLength),\n                view = new DataView(data.buffer); // For each NAL..\n\n            for (i = 0; i < frame.length; i++) {\n                currentNal = frame[i];\n                view.setUint32(dataOffset, currentNal.data.byteLength);\n                dataOffset += 4;\n                data.set(currentNal.data, dataOffset);\n                dataOffset += currentNal.data.byteLength;\n            }\n            return data;\n        };\n        var frameUtils$1 = {\n            groupNalsIntoFrames: groupNalsIntoFrames,\n            groupFramesIntoGops: groupFramesIntoGops,\n            extendFirstKeyFrame: extendFirstKeyFrame,\n            generateSampleTable: generateSampleTable$1,\n            concatenateNalData: concatenateNalData,\n            generateSampleTableForFrame: generateSampleTableForFrame,\n            concatenateNalDataForFrame: concatenateNalDataForFrame\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n\n        var highPrefix = [33, 16, 5, 32, 164, 27];\n        var lowPrefix = [33, 65, 108, 84, 1, 2, 4, 8, 168, 2, 4, 8, 17, 191, 252];\n        var zeroFill = function (count) {\n            var a = [];\n            while (count--) {\n                a.push(0);\n            }\n            return a;\n        };\n        var makeTable = function (metaTable) {\n            return Object.keys(metaTable).reduce(function (obj, key) {\n                obj[key] = new Uint8Array(metaTable[key].reduce(function (arr, part) {\n                    return arr.concat(part);\n                }, []));\n                return obj;\n            }, {});\n        };\n        var silence;\n        var silence_1 = function () {\n            if (!silence) {\n                // Frames-of-silence to use for filling in missing AAC frames\n                var coneOfSilence = {\n                    96000: [highPrefix, [227, 64], zeroFill(154), [56]],\n                    88200: [highPrefix, [231], zeroFill(170), [56]],\n                    64000: [highPrefix, [248, 192], zeroFill(240), [56]],\n                    48000: [highPrefix, [255, 192], zeroFill(268), [55, 148, 128], zeroFill(54), [112]],\n                    44100: [highPrefix, [255, 192], zeroFill(268), [55, 163, 128], zeroFill(84), [112]],\n                    32000: [highPrefix, [255, 192], zeroFill(268), [55, 234], zeroFill(226), [112]],\n                    24000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 112], zeroFill(126), [224]],\n                    16000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 255], zeroFill(269), [223, 108], zeroFill(195), [1, 192]],\n                    12000: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 253, 128], zeroFill(259), [56]],\n                    11025: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 255, 192], zeroFill(268), [55, 175, 128], zeroFill(108), [112]],\n                    8000: [lowPrefix, zeroFill(268), [3, 121, 16], zeroFill(47), [7]]\n                };\n                silence = makeTable(coneOfSilence);\n            }\n            return silence;\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n\n        var ONE_SECOND_IN_TS$4 = 90000,\n            // 90kHz clock\n            secondsToVideoTs,\n            secondsToAudioTs,\n            videoTsToSeconds,\n            audioTsToSeconds,\n            audioTsToVideoTs,\n            videoTsToAudioTs,\n            metadataTsToSeconds;\n        secondsToVideoTs = function (seconds) {\n            return seconds * ONE_SECOND_IN_TS$4;\n        };\n        secondsToAudioTs = function (seconds, sampleRate) {\n            return seconds * sampleRate;\n        };\n        videoTsToSeconds = function (timestamp) {\n            return timestamp / ONE_SECOND_IN_TS$4;\n        };\n        audioTsToSeconds = function (timestamp, sampleRate) {\n            return timestamp / sampleRate;\n        };\n        audioTsToVideoTs = function (timestamp, sampleRate) {\n            return secondsToVideoTs(audioTsToSeconds(timestamp, sampleRate));\n        };\n        videoTsToAudioTs = function (timestamp, sampleRate) {\n            return secondsToAudioTs(videoTsToSeconds(timestamp), sampleRate);\n        };\n        /**\n         * Adjust ID3 tag or caption timing information by the timeline pts values\n         * (if keepOriginalTimestamps is false) and convert to seconds\n         */\n\n        metadataTsToSeconds = function (timestamp, timelineStartPts, keepOriginalTimestamps) {\n            return videoTsToSeconds(keepOriginalTimestamps ? timestamp : timestamp - timelineStartPts);\n        };\n        var clock$2 = {\n            ONE_SECOND_IN_TS: ONE_SECOND_IN_TS$4,\n            secondsToVideoTs: secondsToVideoTs,\n            secondsToAudioTs: secondsToAudioTs,\n            videoTsToSeconds: videoTsToSeconds,\n            audioTsToSeconds: audioTsToSeconds,\n            audioTsToVideoTs: audioTsToVideoTs,\n            videoTsToAudioTs: videoTsToAudioTs,\n            metadataTsToSeconds: metadataTsToSeconds\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n\n        var coneOfSilence = silence_1;\n        var clock$1 = clock$2;\n        /**\n         * Sum the `byteLength` properties of the data in each AAC frame\n         */\n\n        var sumFrameByteLengths = function (array) {\n            var i,\n                currentObj,\n                sum = 0; // sum the byteLength's all each nal unit in the frame\n\n            for (i = 0; i < array.length; i++) {\n                currentObj = array[i];\n                sum += currentObj.data.byteLength;\n            }\n            return sum;\n        }; // Possibly pad (prefix) the audio track with silence if appending this track\n        // would lead to the introduction of a gap in the audio buffer\n\n        var prefixWithSilence = function (track, frames, audioAppendStartTs, videoBaseMediaDecodeTime) {\n            var baseMediaDecodeTimeTs,\n                frameDuration = 0,\n                audioGapDuration = 0,\n                audioFillFrameCount = 0,\n                audioFillDuration = 0,\n                silentFrame,\n                i,\n                firstFrame;\n            if (!frames.length) {\n                return;\n            }\n            baseMediaDecodeTimeTs = clock$1.audioTsToVideoTs(track.baseMediaDecodeTime, track.samplerate); // determine frame clock duration based on sample rate, round up to avoid overfills\n\n            frameDuration = Math.ceil(clock$1.ONE_SECOND_IN_TS / (track.samplerate / 1024));\n            if (audioAppendStartTs && videoBaseMediaDecodeTime) {\n                // insert the shortest possible amount (audio gap or audio to video gap)\n                audioGapDuration = baseMediaDecodeTimeTs - Math.max(audioAppendStartTs, videoBaseMediaDecodeTime); // number of full frames in the audio gap\n\n                audioFillFrameCount = Math.floor(audioGapDuration / frameDuration);\n                audioFillDuration = audioFillFrameCount * frameDuration;\n            } // don't attempt to fill gaps smaller than a single frame or larger\n            // than a half second\n\n            if (audioFillFrameCount < 1 || audioFillDuration > clock$1.ONE_SECOND_IN_TS / 2) {\n                return;\n            }\n            silentFrame = coneOfSilence()[track.samplerate];\n            if (!silentFrame) {\n                // we don't have a silent frame pregenerated for the sample rate, so use a frame\n                // from the content instead\n                silentFrame = frames[0].data;\n            }\n            for (i = 0; i < audioFillFrameCount; i++) {\n                firstFrame = frames[0];\n                frames.splice(0, 0, {\n                    data: silentFrame,\n                    dts: firstFrame.dts - frameDuration,\n                    pts: firstFrame.pts - frameDuration\n                });\n            }\n            track.baseMediaDecodeTime -= Math.floor(clock$1.videoTsToAudioTs(audioFillDuration, track.samplerate));\n            return audioFillDuration;\n        }; // If the audio segment extends before the earliest allowed dts\n        // value, remove AAC frames until starts at or after the earliest\n        // allowed DTS so that we don't end up with a negative baseMedia-\n        // DecodeTime for the audio track\n\n        var trimAdtsFramesByEarliestDts = function (adtsFrames, track, earliestAllowedDts) {\n            if (track.minSegmentDts >= earliestAllowedDts) {\n                return adtsFrames;\n            } // We will need to recalculate the earliest segment Dts\n\n            track.minSegmentDts = Infinity;\n            return adtsFrames.filter(function (currentFrame) {\n                // If this is an allowed frame, keep it and record it's Dts\n                if (currentFrame.dts >= earliestAllowedDts) {\n                    track.minSegmentDts = Math.min(track.minSegmentDts, currentFrame.dts);\n                    track.minSegmentPts = track.minSegmentDts;\n                    return true;\n                } // Otherwise, discard it\n\n                return false;\n            });\n        }; // generate the track's raw mdat data from an array of frames\n\n        var generateSampleTable = function (frames) {\n            var i,\n                currentFrame,\n                samples = [];\n            for (i = 0; i < frames.length; i++) {\n                currentFrame = frames[i];\n                samples.push({\n                    size: currentFrame.data.byteLength,\n                    duration: 1024 // For AAC audio, all samples contain 1024 samples\n                });\n            }\n\n            return samples;\n        }; // generate the track's sample table from an array of frames\n\n        var concatenateFrameData = function (frames) {\n            var i,\n                currentFrame,\n                dataOffset = 0,\n                data = new Uint8Array(sumFrameByteLengths(frames));\n            for (i = 0; i < frames.length; i++) {\n                currentFrame = frames[i];\n                data.set(currentFrame.data, dataOffset);\n                dataOffset += currentFrame.data.byteLength;\n            }\n            return data;\n        };\n        var audioFrameUtils$1 = {\n            prefixWithSilence: prefixWithSilence,\n            trimAdtsFramesByEarliestDts: trimAdtsFramesByEarliestDts,\n            generateSampleTable: generateSampleTable,\n            concatenateFrameData: concatenateFrameData\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n\n        var ONE_SECOND_IN_TS$3 = clock$2.ONE_SECOND_IN_TS;\n        /**\n         * Store information about the start and end of the track and the\n         * duration for each frame/sample we process in order to calculate\n         * the baseMediaDecodeTime\n         */\n\n        var collectDtsInfo = function (track, data) {\n            if (typeof data.pts === 'number') {\n                if (track.timelineStartInfo.pts === undefined) {\n                    track.timelineStartInfo.pts = data.pts;\n                }\n                if (track.minSegmentPts === undefined) {\n                    track.minSegmentPts = data.pts;\n                } else {\n                    track.minSegmentPts = Math.min(track.minSegmentPts, data.pts);\n                }\n                if (track.maxSegmentPts === undefined) {\n                    track.maxSegmentPts = data.pts;\n                } else {\n                    track.maxSegmentPts = Math.max(track.maxSegmentPts, data.pts);\n                }\n            }\n            if (typeof data.dts === 'number') {\n                if (track.timelineStartInfo.dts === undefined) {\n                    track.timelineStartInfo.dts = data.dts;\n                }\n                if (track.minSegmentDts === undefined) {\n                    track.minSegmentDts = data.dts;\n                } else {\n                    track.minSegmentDts = Math.min(track.minSegmentDts, data.dts);\n                }\n                if (track.maxSegmentDts === undefined) {\n                    track.maxSegmentDts = data.dts;\n                } else {\n                    track.maxSegmentDts = Math.max(track.maxSegmentDts, data.dts);\n                }\n            }\n        };\n        /**\n         * Clear values used to calculate the baseMediaDecodeTime between\n         * tracks\n         */\n\n        var clearDtsInfo = function (track) {\n            delete track.minSegmentDts;\n            delete track.maxSegmentDts;\n            delete track.minSegmentPts;\n            delete track.maxSegmentPts;\n        };\n        /**\n         * Calculate the track's baseMediaDecodeTime based on the earliest\n         * DTS the transmuxer has ever seen and the minimum DTS for the\n         * current track\n         * @param track {object} track metadata configuration\n         * @param keepOriginalTimestamps {boolean} If true, keep the timestamps\n         *        in the source; false to adjust the first segment to start at 0.\n         */\n\n        var calculateTrackBaseMediaDecodeTime = function (track, keepOriginalTimestamps) {\n            var baseMediaDecodeTime,\n                scale,\n                minSegmentDts = track.minSegmentDts; // Optionally adjust the time so the first segment starts at zero.\n\n            if (!keepOriginalTimestamps) {\n                minSegmentDts -= track.timelineStartInfo.dts;\n            } // track.timelineStartInfo.baseMediaDecodeTime is the location, in time, where\n            // we want the start of the first segment to be placed\n\n            baseMediaDecodeTime = track.timelineStartInfo.baseMediaDecodeTime; // Add to that the distance this segment is from the very first\n\n            baseMediaDecodeTime += minSegmentDts; // baseMediaDecodeTime must not become negative\n\n            baseMediaDecodeTime = Math.max(0, baseMediaDecodeTime);\n            if (track.type === 'audio') {\n                // Audio has a different clock equal to the sampling_rate so we need to\n                // scale the PTS values into the clock rate of the track\n                scale = track.samplerate / ONE_SECOND_IN_TS$3;\n                baseMediaDecodeTime *= scale;\n                baseMediaDecodeTime = Math.floor(baseMediaDecodeTime);\n            }\n            return baseMediaDecodeTime;\n        };\n        var trackDecodeInfo$1 = {\n            clearDtsInfo: clearDtsInfo,\n            calculateTrackBaseMediaDecodeTime: calculateTrackBaseMediaDecodeTime,\n            collectDtsInfo: collectDtsInfo\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Reads in-band caption information from a video elementary\n         * stream. Captions must follow the CEA-708 standard for injection\n         * into an MPEG-2 transport streams.\n         * @see https://en.wikipedia.org/wiki/CEA-708\n         * @see https://www.gpo.gov/fdsys/pkg/CFR-2007-title47-vol1/pdf/CFR-2007-title47-vol1-sec15-119.pdf\n         */\n            // payload type field to indicate how they are to be\n            // interpreted. CEAS-708 caption content is always transmitted with\n            // payload type 0x04.\n\n        var USER_DATA_REGISTERED_ITU_T_T35 = 4,\n            RBSP_TRAILING_BITS = 128;\n        /**\n         * Parse a supplemental enhancement information (SEI) NAL unit.\n         * Stops parsing once a message of type ITU T T35 has been found.\n         *\n         * @param bytes {Uint8Array} the bytes of a SEI NAL unit\n         * @return {object} the parsed SEI payload\n         * @see Rec. ITU-T H.264, 7.3.2.3.1\n         */\n\n        var parseSei = function (bytes) {\n            var i = 0,\n                result = {\n                    payloadType: -1,\n                    payloadSize: 0\n                },\n                payloadType = 0,\n                payloadSize = 0; // go through the sei_rbsp parsing each each individual sei_message\n\n            while (i < bytes.byteLength) {\n                // stop once we have hit the end of the sei_rbsp\n                if (bytes[i] === RBSP_TRAILING_BITS) {\n                    break;\n                } // Parse payload type\n\n                while (bytes[i] === 0xFF) {\n                    payloadType += 255;\n                    i++;\n                }\n                payloadType += bytes[i++]; // Parse payload size\n\n                while (bytes[i] === 0xFF) {\n                    payloadSize += 255;\n                    i++;\n                }\n                payloadSize += bytes[i++]; // this sei_message is a 608/708 caption so save it and break\n                // there can only ever be one caption message in a frame's sei\n\n                if (!result.payload && payloadType === USER_DATA_REGISTERED_ITU_T_T35) {\n                    var userIdentifier = String.fromCharCode(bytes[i + 3], bytes[i + 4], bytes[i + 5], bytes[i + 6]);\n                    if (userIdentifier === 'GA94') {\n                        result.payloadType = payloadType;\n                        result.payloadSize = payloadSize;\n                        result.payload = bytes.subarray(i, i + payloadSize);\n                        break;\n                    } else {\n                        result.payload = void 0;\n                    }\n                } // skip the payload and parse the next message\n\n                i += payloadSize;\n                payloadType = 0;\n                payloadSize = 0;\n            }\n            return result;\n        }; // see ANSI/SCTE 128-1 (2013), section 8.1\n\n        var parseUserData = function (sei) {\n            // itu_t_t35_contry_code must be 181 (United States) for\n            // captions\n            if (sei.payload[0] !== 181) {\n                return null;\n            } // itu_t_t35_provider_code should be 49 (ATSC) for captions\n\n            if ((sei.payload[1] << 8 | sei.payload[2]) !== 49) {\n                return null;\n            } // the user_identifier should be \"GA94\" to indicate ATSC1 data\n\n            if (String.fromCharCode(sei.payload[3], sei.payload[4], sei.payload[5], sei.payload[6]) !== 'GA94') {\n                return null;\n            } // finally, user_data_type_code should be 0x03 for caption data\n\n            if (sei.payload[7] !== 0x03) {\n                return null;\n            } // return the user_data_type_structure and strip the trailing\n            // marker bits\n\n            return sei.payload.subarray(8, sei.payload.length - 1);\n        }; // see CEA-708-D, section 4.4\n\n        var parseCaptionPackets = function (pts, userData) {\n            var results = [],\n                i,\n                count,\n                offset,\n                data; // if this is just filler, return immediately\n\n            if (!(userData[0] & 0x40)) {\n                return results;\n            } // parse out the cc_data_1 and cc_data_2 fields\n\n            count = userData[0] & 0x1f;\n            for (i = 0; i < count; i++) {\n                offset = i * 3;\n                data = {\n                    type: userData[offset + 2] & 0x03,\n                    pts: pts\n                }; // capture cc data when cc_valid is 1\n\n                if (userData[offset + 2] & 0x04) {\n                    data.ccData = userData[offset + 3] << 8 | userData[offset + 4];\n                    results.push(data);\n                }\n            }\n            return results;\n        };\n        var discardEmulationPreventionBytes$1 = function (data) {\n            var length = data.byteLength,\n                emulationPreventionBytesPositions = [],\n                i = 1,\n                newLength,\n                newData; // Find all `Emulation Prevention Bytes`\n\n            while (i < length - 2) {\n                if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {\n                    emulationPreventionBytesPositions.push(i + 2);\n                    i += 2;\n                } else {\n                    i++;\n                }\n            } // If no Emulation Prevention Bytes were found just return the original\n            // array\n\n            if (emulationPreventionBytesPositions.length === 0) {\n                return data;\n            } // Create a new array to hold the NAL unit data\n\n            newLength = length - emulationPreventionBytesPositions.length;\n            newData = new Uint8Array(newLength);\n            var sourceIndex = 0;\n            for (i = 0; i < newLength; sourceIndex++, i++) {\n                if (sourceIndex === emulationPreventionBytesPositions[0]) {\n                    // Skip this byte\n                    sourceIndex++; // Remove this position index\n\n                    emulationPreventionBytesPositions.shift();\n                }\n                newData[i] = data[sourceIndex];\n            }\n            return newData;\n        }; // exports\n\n        var captionPacketParser = {\n            parseSei: parseSei,\n            parseUserData: parseUserData,\n            parseCaptionPackets: parseCaptionPackets,\n            discardEmulationPreventionBytes: discardEmulationPreventionBytes$1,\n            USER_DATA_REGISTERED_ITU_T_T35: USER_DATA_REGISTERED_ITU_T_T35\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Reads in-band caption information from a video elementary\n         * stream. Captions must follow the CEA-708 standard for injection\n         * into an MPEG-2 transport streams.\n         * @see https://en.wikipedia.org/wiki/CEA-708\n         * @see https://www.gpo.gov/fdsys/pkg/CFR-2007-title47-vol1/pdf/CFR-2007-title47-vol1-sec15-119.pdf\n         */\n            // Link To Transport\n            // -----------------\n\n        var Stream$7 = stream;\n        var cea708Parser = captionPacketParser;\n        var CaptionStream$2 = function (options) {\n            options = options || {};\n            CaptionStream$2.prototype.init.call(this); // parse708captions flag, default to true\n\n            this.parse708captions_ = typeof options.parse708captions === 'boolean' ? options.parse708captions : true;\n            this.captionPackets_ = [];\n            this.ccStreams_ = [new Cea608Stream(0, 0),\n                // eslint-disable-line no-use-before-define\n                new Cea608Stream(0, 1),\n                // eslint-disable-line no-use-before-define\n                new Cea608Stream(1, 0),\n                // eslint-disable-line no-use-before-define\n                new Cea608Stream(1, 1) // eslint-disable-line no-use-before-define\n            ];\n\n            if (this.parse708captions_) {\n                this.cc708Stream_ = new Cea708Stream({\n                    captionServices: options.captionServices\n                }); // eslint-disable-line no-use-before-define\n            }\n\n            this.reset(); // forward data and done events from CCs to this CaptionStream\n\n            this.ccStreams_.forEach(function (cc) {\n                cc.on('data', this.trigger.bind(this, 'data'));\n                cc.on('partialdone', this.trigger.bind(this, 'partialdone'));\n                cc.on('done', this.trigger.bind(this, 'done'));\n            }, this);\n            if (this.parse708captions_) {\n                this.cc708Stream_.on('data', this.trigger.bind(this, 'data'));\n                this.cc708Stream_.on('partialdone', this.trigger.bind(this, 'partialdone'));\n                this.cc708Stream_.on('done', this.trigger.bind(this, 'done'));\n            }\n        };\n        CaptionStream$2.prototype = new Stream$7();\n        CaptionStream$2.prototype.push = function (event) {\n            var sei, userData, newCaptionPackets; // only examine SEI NALs\n\n            if (event.nalUnitType !== 'sei_rbsp') {\n                return;\n            } // parse the sei\n\n            sei = cea708Parser.parseSei(event.escapedRBSP); // no payload data, skip\n\n            if (!sei.payload) {\n                return;\n            } // ignore everything but user_data_registered_itu_t_t35\n\n            if (sei.payloadType !== cea708Parser.USER_DATA_REGISTERED_ITU_T_T35) {\n                return;\n            } // parse out the user data payload\n\n            userData = cea708Parser.parseUserData(sei); // ignore unrecognized userData\n\n            if (!userData) {\n                return;\n            } // Sometimes, the same segment # will be downloaded twice. To stop the\n            // caption data from being processed twice, we track the latest dts we've\n            // received and ignore everything with a dts before that. However, since\n            // data for a specific dts can be split across packets on either side of\n            // a segment boundary, we need to make sure we *don't* ignore the packets\n            // from the *next* segment that have dts === this.latestDts_. By constantly\n            // tracking the number of packets received with dts === this.latestDts_, we\n            // know how many should be ignored once we start receiving duplicates.\n\n            if (event.dts < this.latestDts_) {\n                // We've started getting older data, so set the flag.\n                this.ignoreNextEqualDts_ = true;\n                return;\n            } else if (event.dts === this.latestDts_ && this.ignoreNextEqualDts_) {\n                this.numSameDts_--;\n                if (!this.numSameDts_) {\n                    // We've received the last duplicate packet, time to start processing again\n                    this.ignoreNextEqualDts_ = false;\n                }\n                return;\n            } // parse out CC data packets and save them for later\n\n            newCaptionPackets = cea708Parser.parseCaptionPackets(event.pts, userData);\n            this.captionPackets_ = this.captionPackets_.concat(newCaptionPackets);\n            if (this.latestDts_ !== event.dts) {\n                this.numSameDts_ = 0;\n            }\n            this.numSameDts_++;\n            this.latestDts_ = event.dts;\n        };\n        CaptionStream$2.prototype.flushCCStreams = function (flushType) {\n            this.ccStreams_.forEach(function (cc) {\n                return flushType === 'flush' ? cc.flush() : cc.partialFlush();\n            }, this);\n        };\n        CaptionStream$2.prototype.flushStream = function (flushType) {\n            // make sure we actually parsed captions before proceeding\n            if (!this.captionPackets_.length) {\n                this.flushCCStreams(flushType);\n                return;\n            } // In Chrome, the Array#sort function is not stable so add a\n            // presortIndex that we can use to ensure we get a stable-sort\n\n            this.captionPackets_.forEach(function (elem, idx) {\n                elem.presortIndex = idx;\n            }); // sort caption byte-pairs based on their PTS values\n\n            this.captionPackets_.sort(function (a, b) {\n                if (a.pts === b.pts) {\n                    return a.presortIndex - b.presortIndex;\n                }\n                return a.pts - b.pts;\n            });\n            this.captionPackets_.forEach(function (packet) {\n                if (packet.type < 2) {\n                    // Dispatch packet to the right Cea608Stream\n                    this.dispatchCea608Packet(packet);\n                } else {\n                    // Dispatch packet to the Cea708Stream\n                    this.dispatchCea708Packet(packet);\n                }\n            }, this);\n            this.captionPackets_.length = 0;\n            this.flushCCStreams(flushType);\n        };\n        CaptionStream$2.prototype.flush = function () {\n            return this.flushStream('flush');\n        }; // Only called if handling partial data\n\n        CaptionStream$2.prototype.partialFlush = function () {\n            return this.flushStream('partialFlush');\n        };\n        CaptionStream$2.prototype.reset = function () {\n            this.latestDts_ = null;\n            this.ignoreNextEqualDts_ = false;\n            this.numSameDts_ = 0;\n            this.activeCea608Channel_ = [null, null];\n            this.ccStreams_.forEach(function (ccStream) {\n                ccStream.reset();\n            });\n        }; // From the CEA-608 spec:\n\n        /*\n     * When XDS sub-packets are interleaved with other services, the end of each sub-packet shall be followed\n     * by a control pair to change to a different service. When any of the control codes from 0x10 to 0x1F is\n     * used to begin a control code pair, it indicates the return to captioning or Text data. The control code pair\n     * and subsequent data should then be processed according to the FCC rules. It may be necessary for the\n     * line 21 data encoder to automatically insert a control code pair (i.e. RCL, RU2, RU3, RU4, RDC, or RTD)\n     * to switch to captioning or Text.\n    */\n        // With that in mind, we ignore any data between an XDS control code and a\n        // subsequent closed-captioning control code.\n\n        CaptionStream$2.prototype.dispatchCea608Packet = function (packet) {\n            // NOTE: packet.type is the CEA608 field\n            if (this.setsTextOrXDSActive(packet)) {\n                this.activeCea608Channel_[packet.type] = null;\n            } else if (this.setsChannel1Active(packet)) {\n                this.activeCea608Channel_[packet.type] = 0;\n            } else if (this.setsChannel2Active(packet)) {\n                this.activeCea608Channel_[packet.type] = 1;\n            }\n            if (this.activeCea608Channel_[packet.type] === null) {\n                // If we haven't received anything to set the active channel, or the\n                // packets are Text/XDS data, discard the data; we don't want jumbled\n                // captions\n                return;\n            }\n            this.ccStreams_[(packet.type << 1) + this.activeCea608Channel_[packet.type]].push(packet);\n        };\n        CaptionStream$2.prototype.setsChannel1Active = function (packet) {\n            return (packet.ccData & 0x7800) === 0x1000;\n        };\n        CaptionStream$2.prototype.setsChannel2Active = function (packet) {\n            return (packet.ccData & 0x7800) === 0x1800;\n        };\n        CaptionStream$2.prototype.setsTextOrXDSActive = function (packet) {\n            return (packet.ccData & 0x7100) === 0x0100 || (packet.ccData & 0x78fe) === 0x102a || (packet.ccData & 0x78fe) === 0x182a;\n        };\n        CaptionStream$2.prototype.dispatchCea708Packet = function (packet) {\n            if (this.parse708captions_) {\n                this.cc708Stream_.push(packet);\n            }\n        }; // ----------------------\n        // Session to Application\n        // ----------------------\n        // This hash maps special and extended character codes to their\n        // proper Unicode equivalent. The first one-byte key is just a\n        // non-standard character code. The two-byte keys that follow are\n        // the extended CEA708 character codes, along with the preceding\n        // 0x10 extended character byte to distinguish these codes from\n        // non-extended character codes. Every CEA708 character code that\n        // is not in this object maps directly to a standard unicode\n        // character code.\n        // The transparent space and non-breaking transparent space are\n        // technically not fully supported since there is no code to\n        // make them transparent, so they have normal non-transparent\n        // stand-ins.\n        // The special closed caption (CC) character isn't a standard\n        // unicode character, so a fairly similar unicode character was\n        // chosen in it's place.\n\n        var CHARACTER_TRANSLATION_708 = {\n            0x7f: 0x266a,\n            // ♪\n            0x1020: 0x20,\n            // Transparent Space\n            0x1021: 0xa0,\n            // Nob-breaking Transparent Space\n            0x1025: 0x2026,\n            // …\n            0x102a: 0x0160,\n            // Š\n            0x102c: 0x0152,\n            // Œ\n            0x1030: 0x2588,\n            // █\n            0x1031: 0x2018,\n            // ‘\n            0x1032: 0x2019,\n            // ’\n            0x1033: 0x201c,\n            // “\n            0x1034: 0x201d,\n            // ”\n            0x1035: 0x2022,\n            // •\n            0x1039: 0x2122,\n            // ™\n            0x103a: 0x0161,\n            // š\n            0x103c: 0x0153,\n            // œ\n            0x103d: 0x2120,\n            // ℠\n            0x103f: 0x0178,\n            // Ÿ\n            0x1076: 0x215b,\n            // ⅛\n            0x1077: 0x215c,\n            // ⅜\n            0x1078: 0x215d,\n            // ⅝\n            0x1079: 0x215e,\n            // ⅞\n            0x107a: 0x23d0,\n            // ⏐\n            0x107b: 0x23a4,\n            // ⎤\n            0x107c: 0x23a3,\n            // ⎣\n            0x107d: 0x23af,\n            // ⎯\n            0x107e: 0x23a6,\n            // ⎦\n            0x107f: 0x23a1,\n            // ⎡\n            0x10a0: 0x3138 // ㄸ (CC char)\n        };\n\n        var get708CharFromCode = function (code) {\n            var newCode = CHARACTER_TRANSLATION_708[code] || code;\n            if (code & 0x1000 && code === newCode) {\n                // Invalid extended code\n                return '';\n            }\n            return String.fromCharCode(newCode);\n        };\n        var within708TextBlock = function (b) {\n            return 0x20 <= b && b <= 0x7f || 0xa0 <= b && b <= 0xff;\n        };\n        var Cea708Window = function (windowNum) {\n            this.windowNum = windowNum;\n            this.reset();\n        };\n        Cea708Window.prototype.reset = function () {\n            this.clearText();\n            this.pendingNewLine = false;\n            this.winAttr = {};\n            this.penAttr = {};\n            this.penLoc = {};\n            this.penColor = {}; // These default values are arbitrary,\n            // defineWindow will usually override them\n\n            this.visible = 0;\n            this.rowLock = 0;\n            this.columnLock = 0;\n            this.priority = 0;\n            this.relativePositioning = 0;\n            this.anchorVertical = 0;\n            this.anchorHorizontal = 0;\n            this.anchorPoint = 0;\n            this.rowCount = 1;\n            this.virtualRowCount = this.rowCount + 1;\n            this.columnCount = 41;\n            this.windowStyle = 0;\n            this.penStyle = 0;\n        };\n        Cea708Window.prototype.getText = function () {\n            return this.rows.join('\\n');\n        };\n        Cea708Window.prototype.clearText = function () {\n            this.rows = [''];\n            this.rowIdx = 0;\n        };\n        Cea708Window.prototype.newLine = function (pts) {\n            if (this.rows.length >= this.virtualRowCount && typeof this.beforeRowOverflow === 'function') {\n                this.beforeRowOverflow(pts);\n            }\n            if (this.rows.length > 0) {\n                this.rows.push('');\n                this.rowIdx++;\n            } // Show all virtual rows since there's no visible scrolling\n\n            while (this.rows.length > this.virtualRowCount) {\n                this.rows.shift();\n                this.rowIdx--;\n            }\n        };\n        Cea708Window.prototype.isEmpty = function () {\n            if (this.rows.length === 0) {\n                return true;\n            } else if (this.rows.length === 1) {\n                return this.rows[0] === '';\n            }\n            return false;\n        };\n        Cea708Window.prototype.addText = function (text) {\n            this.rows[this.rowIdx] += text;\n        };\n        Cea708Window.prototype.backspace = function () {\n            if (!this.isEmpty()) {\n                var row = this.rows[this.rowIdx];\n                this.rows[this.rowIdx] = row.substr(0, row.length - 1);\n            }\n        };\n        var Cea708Service = function (serviceNum, encoding, stream) {\n            this.serviceNum = serviceNum;\n            this.text = '';\n            this.currentWindow = new Cea708Window(-1);\n            this.windows = [];\n            this.stream = stream; // Try to setup a TextDecoder if an `encoding` value was provided\n\n            if (typeof encoding === 'string') {\n                this.createTextDecoder(encoding);\n            }\n        };\n        /**\n         * Initialize service windows\n         * Must be run before service use\n         *\n         * @param  {Integer}  pts               PTS value\n         * @param  {Function} beforeRowOverflow Function to execute before row overflow of a window\n         */\n\n        Cea708Service.prototype.init = function (pts, beforeRowOverflow) {\n            this.startPts = pts;\n            for (var win = 0; win < 8; win++) {\n                this.windows[win] = new Cea708Window(win);\n                if (typeof beforeRowOverflow === 'function') {\n                    this.windows[win].beforeRowOverflow = beforeRowOverflow;\n                }\n            }\n        };\n        /**\n         * Set current window of service to be affected by commands\n         *\n         * @param  {Integer} windowNum Window number\n         */\n\n        Cea708Service.prototype.setCurrentWindow = function (windowNum) {\n            this.currentWindow = this.windows[windowNum];\n        };\n        /**\n         * Try to create a TextDecoder if it is natively supported\n         */\n\n        Cea708Service.prototype.createTextDecoder = function (encoding) {\n            if (typeof TextDecoder === 'undefined') {\n                this.stream.trigger('log', {\n                    level: 'warn',\n                    message: 'The `encoding` option is unsupported without TextDecoder support'\n                });\n            } else {\n                try {\n                    this.textDecoder_ = new TextDecoder(encoding);\n                } catch (error) {\n                    this.stream.trigger('log', {\n                        level: 'warn',\n                        message: 'TextDecoder could not be created with ' + encoding + ' encoding. ' + error\n                    });\n                }\n            }\n        };\n        var Cea708Stream = function (options) {\n            options = options || {};\n            Cea708Stream.prototype.init.call(this);\n            var self = this;\n            var captionServices = options.captionServices || {};\n            var captionServiceEncodings = {};\n            var serviceProps; // Get service encodings from captionServices option block\n\n            Object.keys(captionServices).forEach(serviceName => {\n                serviceProps = captionServices[serviceName];\n                if (/^SERVICE/.test(serviceName)) {\n                    captionServiceEncodings[serviceName] = serviceProps.encoding;\n                }\n            });\n            this.serviceEncodings = captionServiceEncodings;\n            this.current708Packet = null;\n            this.services = {};\n            this.push = function (packet) {\n                if (packet.type === 3) {\n                    // 708 packet start\n                    self.new708Packet();\n                    self.add708Bytes(packet);\n                } else {\n                    if (self.current708Packet === null) {\n                        // This should only happen at the start of a file if there's no packet start.\n                        self.new708Packet();\n                    }\n                    self.add708Bytes(packet);\n                }\n            };\n        };\n        Cea708Stream.prototype = new Stream$7();\n        /**\n         * Push current 708 packet, create new 708 packet.\n         */\n\n        Cea708Stream.prototype.new708Packet = function () {\n            if (this.current708Packet !== null) {\n                this.push708Packet();\n            }\n            this.current708Packet = {\n                data: [],\n                ptsVals: []\n            };\n        };\n        /**\n         * Add pts and both bytes from packet into current 708 packet.\n         */\n\n        Cea708Stream.prototype.add708Bytes = function (packet) {\n            var data = packet.ccData;\n            var byte0 = data >>> 8;\n            var byte1 = data & 0xff; // I would just keep a list of packets instead of bytes, but it isn't clear in the spec\n            // that service blocks will always line up with byte pairs.\n\n            this.current708Packet.ptsVals.push(packet.pts);\n            this.current708Packet.data.push(byte0);\n            this.current708Packet.data.push(byte1);\n        };\n        /**\n         * Parse completed 708 packet into service blocks and push each service block.\n         */\n\n        Cea708Stream.prototype.push708Packet = function () {\n            var packet708 = this.current708Packet;\n            var packetData = packet708.data;\n            var serviceNum = null;\n            var blockSize = null;\n            var i = 0;\n            var b = packetData[i++];\n            packet708.seq = b >> 6;\n            packet708.sizeCode = b & 0x3f; // 0b00111111;\n\n            for (; i < packetData.length; i++) {\n                b = packetData[i++];\n                serviceNum = b >> 5;\n                blockSize = b & 0x1f; // 0b00011111\n\n                if (serviceNum === 7 && blockSize > 0) {\n                    // Extended service num\n                    b = packetData[i++];\n                    serviceNum = b;\n                }\n                this.pushServiceBlock(serviceNum, i, blockSize);\n                if (blockSize > 0) {\n                    i += blockSize - 1;\n                }\n            }\n        };\n        /**\n         * Parse service block, execute commands, read text.\n         *\n         * Note: While many of these commands serve important purposes,\n         * many others just parse out the parameters or attributes, but\n         * nothing is done with them because this is not a full and complete\n         * implementation of the entire 708 spec.\n         *\n         * @param  {Integer} serviceNum Service number\n         * @param  {Integer} start      Start index of the 708 packet data\n         * @param  {Integer} size       Block size\n         */\n\n        Cea708Stream.prototype.pushServiceBlock = function (serviceNum, start, size) {\n            var b;\n            var i = start;\n            var packetData = this.current708Packet.data;\n            var service = this.services[serviceNum];\n            if (!service) {\n                service = this.initService(serviceNum, i);\n            }\n            for (; i < start + size && i < packetData.length; i++) {\n                b = packetData[i];\n                if (within708TextBlock(b)) {\n                    i = this.handleText(i, service);\n                } else if (b === 0x18) {\n                    i = this.multiByteCharacter(i, service);\n                } else if (b === 0x10) {\n                    i = this.extendedCommands(i, service);\n                } else if (0x80 <= b && b <= 0x87) {\n                    i = this.setCurrentWindow(i, service);\n                } else if (0x98 <= b && b <= 0x9f) {\n                    i = this.defineWindow(i, service);\n                } else if (b === 0x88) {\n                    i = this.clearWindows(i, service);\n                } else if (b === 0x8c) {\n                    i = this.deleteWindows(i, service);\n                } else if (b === 0x89) {\n                    i = this.displayWindows(i, service);\n                } else if (b === 0x8a) {\n                    i = this.hideWindows(i, service);\n                } else if (b === 0x8b) {\n                    i = this.toggleWindows(i, service);\n                } else if (b === 0x97) {\n                    i = this.setWindowAttributes(i, service);\n                } else if (b === 0x90) {\n                    i = this.setPenAttributes(i, service);\n                } else if (b === 0x91) {\n                    i = this.setPenColor(i, service);\n                } else if (b === 0x92) {\n                    i = this.setPenLocation(i, service);\n                } else if (b === 0x8f) {\n                    service = this.reset(i, service);\n                } else if (b === 0x08) {\n                    // BS: Backspace\n                    service.currentWindow.backspace();\n                } else if (b === 0x0c) {\n                    // FF: Form feed\n                    service.currentWindow.clearText();\n                } else if (b === 0x0d) {\n                    // CR: Carriage return\n                    service.currentWindow.pendingNewLine = true;\n                } else if (b === 0x0e) {\n                    // HCR: Horizontal carriage return\n                    service.currentWindow.clearText();\n                } else if (b === 0x8d) {\n                    // DLY: Delay, nothing to do\n                    i++;\n                } else ;\n            }\n        };\n        /**\n         * Execute an extended command\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.extendedCommands = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[++i];\n            if (within708TextBlock(b)) {\n                i = this.handleText(i, service, {\n                    isExtended: true\n                });\n            }\n            return i;\n        };\n        /**\n         * Get PTS value of a given byte index\n         *\n         * @param  {Integer} byteIndex  Index of the byte\n         * @return {Integer}            PTS\n         */\n\n        Cea708Stream.prototype.getPts = function (byteIndex) {\n            // There's 1 pts value per 2 bytes\n            return this.current708Packet.ptsVals[Math.floor(byteIndex / 2)];\n        };\n        /**\n         * Initializes a service\n         *\n         * @param  {Integer} serviceNum Service number\n         * @return {Service}            Initialized service object\n         */\n\n        Cea708Stream.prototype.initService = function (serviceNum, i) {\n            var serviceName = 'SERVICE' + serviceNum;\n            var self = this;\n            var serviceName;\n            var encoding;\n            if (serviceName in this.serviceEncodings) {\n                encoding = this.serviceEncodings[serviceName];\n            }\n            this.services[serviceNum] = new Cea708Service(serviceNum, encoding, self);\n            this.services[serviceNum].init(this.getPts(i), function (pts) {\n                self.flushDisplayed(pts, self.services[serviceNum]);\n            });\n            return this.services[serviceNum];\n        };\n        /**\n         * Execute text writing to current window\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.handleText = function (i, service, options) {\n            var isExtended = options && options.isExtended;\n            var isMultiByte = options && options.isMultiByte;\n            var packetData = this.current708Packet.data;\n            var extended = isExtended ? 0x1000 : 0x0000;\n            var currentByte = packetData[i];\n            var nextByte = packetData[i + 1];\n            var win = service.currentWindow;\n            var char;\n            var charCodeArray; // Use the TextDecoder if one was created for this service\n\n            if (service.textDecoder_ && !isExtended) {\n                if (isMultiByte) {\n                    charCodeArray = [currentByte, nextByte];\n                    i++;\n                } else {\n                    charCodeArray = [currentByte];\n                }\n                char = service.textDecoder_.decode(new Uint8Array(charCodeArray));\n            } else {\n                char = get708CharFromCode(extended | currentByte);\n            }\n            if (win.pendingNewLine && !win.isEmpty()) {\n                win.newLine(this.getPts(i));\n            }\n            win.pendingNewLine = false;\n            win.addText(char);\n            return i;\n        };\n        /**\n         * Handle decoding of multibyte character\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.multiByteCharacter = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var firstByte = packetData[i + 1];\n            var secondByte = packetData[i + 2];\n            if (within708TextBlock(firstByte) && within708TextBlock(secondByte)) {\n                i = this.handleText(++i, service, {\n                    isMultiByte: true\n                });\n            }\n            return i;\n        };\n        /**\n         * Parse and execute the CW# command.\n         *\n         * Set the current window.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.setCurrentWindow = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[i];\n            var windowNum = b & 0x07;\n            service.setCurrentWindow(windowNum);\n            return i;\n        };\n        /**\n         * Parse and execute the DF# command.\n         *\n         * Define a window and set it as the current window.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.defineWindow = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[i];\n            var windowNum = b & 0x07;\n            service.setCurrentWindow(windowNum);\n            var win = service.currentWindow;\n            b = packetData[++i];\n            win.visible = (b & 0x20) >> 5; // v\n\n            win.rowLock = (b & 0x10) >> 4; // rl\n\n            win.columnLock = (b & 0x08) >> 3; // cl\n\n            win.priority = b & 0x07; // p\n\n            b = packetData[++i];\n            win.relativePositioning = (b & 0x80) >> 7; // rp\n\n            win.anchorVertical = b & 0x7f; // av\n\n            b = packetData[++i];\n            win.anchorHorizontal = b; // ah\n\n            b = packetData[++i];\n            win.anchorPoint = (b & 0xf0) >> 4; // ap\n\n            win.rowCount = b & 0x0f; // rc\n\n            b = packetData[++i];\n            win.columnCount = b & 0x3f; // cc\n\n            b = packetData[++i];\n            win.windowStyle = (b & 0x38) >> 3; // ws\n\n            win.penStyle = b & 0x07; // ps\n            // The spec says there are (rowCount+1) \"virtual rows\"\n\n            win.virtualRowCount = win.rowCount + 1;\n            return i;\n        };\n        /**\n         * Parse and execute the SWA command.\n         *\n         * Set attributes of the current window.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.setWindowAttributes = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[i];\n            var winAttr = service.currentWindow.winAttr;\n            b = packetData[++i];\n            winAttr.fillOpacity = (b & 0xc0) >> 6; // fo\n\n            winAttr.fillRed = (b & 0x30) >> 4; // fr\n\n            winAttr.fillGreen = (b & 0x0c) >> 2; // fg\n\n            winAttr.fillBlue = b & 0x03; // fb\n\n            b = packetData[++i];\n            winAttr.borderType = (b & 0xc0) >> 6; // bt\n\n            winAttr.borderRed = (b & 0x30) >> 4; // br\n\n            winAttr.borderGreen = (b & 0x0c) >> 2; // bg\n\n            winAttr.borderBlue = b & 0x03; // bb\n\n            b = packetData[++i];\n            winAttr.borderType += (b & 0x80) >> 5; // bt\n\n            winAttr.wordWrap = (b & 0x40) >> 6; // ww\n\n            winAttr.printDirection = (b & 0x30) >> 4; // pd\n\n            winAttr.scrollDirection = (b & 0x0c) >> 2; // sd\n\n            winAttr.justify = b & 0x03; // j\n\n            b = packetData[++i];\n            winAttr.effectSpeed = (b & 0xf0) >> 4; // es\n\n            winAttr.effectDirection = (b & 0x0c) >> 2; // ed\n\n            winAttr.displayEffect = b & 0x03; // de\n\n            return i;\n        };\n        /**\n         * Gather text from all displayed windows and push a caption to output.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         */\n\n        Cea708Stream.prototype.flushDisplayed = function (pts, service) {\n            var displayedText = []; // TODO: Positioning not supported, displaying multiple windows will not necessarily\n            // display text in the correct order, but sample files so far have not shown any issue.\n\n            for (var winId = 0; winId < 8; winId++) {\n                if (service.windows[winId].visible && !service.windows[winId].isEmpty()) {\n                    displayedText.push(service.windows[winId].getText());\n                }\n            }\n            service.endPts = pts;\n            service.text = displayedText.join('\\n\\n');\n            this.pushCaption(service);\n            service.startPts = pts;\n        };\n        /**\n         * Push a caption to output if the caption contains text.\n         *\n         * @param  {Service} service  The service object to be affected\n         */\n\n        Cea708Stream.prototype.pushCaption = function (service) {\n            if (service.text !== '') {\n                this.trigger('data', {\n                    startPts: service.startPts,\n                    endPts: service.endPts,\n                    text: service.text,\n                    stream: 'cc708_' + service.serviceNum\n                });\n                service.text = '';\n                service.startPts = service.endPts;\n            }\n        };\n        /**\n         * Parse and execute the DSW command.\n         *\n         * Set visible property of windows based on the parsed bitmask.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.displayWindows = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[++i];\n            var pts = this.getPts(i);\n            this.flushDisplayed(pts, service);\n            for (var winId = 0; winId < 8; winId++) {\n                if (b & 0x01 << winId) {\n                    service.windows[winId].visible = 1;\n                }\n            }\n            return i;\n        };\n        /**\n         * Parse and execute the HDW command.\n         *\n         * Set visible property of windows based on the parsed bitmask.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.hideWindows = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[++i];\n            var pts = this.getPts(i);\n            this.flushDisplayed(pts, service);\n            for (var winId = 0; winId < 8; winId++) {\n                if (b & 0x01 << winId) {\n                    service.windows[winId].visible = 0;\n                }\n            }\n            return i;\n        };\n        /**\n         * Parse and execute the TGW command.\n         *\n         * Set visible property of windows based on the parsed bitmask.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.toggleWindows = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[++i];\n            var pts = this.getPts(i);\n            this.flushDisplayed(pts, service);\n            for (var winId = 0; winId < 8; winId++) {\n                if (b & 0x01 << winId) {\n                    service.windows[winId].visible ^= 1;\n                }\n            }\n            return i;\n        };\n        /**\n         * Parse and execute the CLW command.\n         *\n         * Clear text of windows based on the parsed bitmask.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.clearWindows = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[++i];\n            var pts = this.getPts(i);\n            this.flushDisplayed(pts, service);\n            for (var winId = 0; winId < 8; winId++) {\n                if (b & 0x01 << winId) {\n                    service.windows[winId].clearText();\n                }\n            }\n            return i;\n        };\n        /**\n         * Parse and execute the DLW command.\n         *\n         * Re-initialize windows based on the parsed bitmask.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.deleteWindows = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[++i];\n            var pts = this.getPts(i);\n            this.flushDisplayed(pts, service);\n            for (var winId = 0; winId < 8; winId++) {\n                if (b & 0x01 << winId) {\n                    service.windows[winId].reset();\n                }\n            }\n            return i;\n        };\n        /**\n         * Parse and execute the SPA command.\n         *\n         * Set pen attributes of the current window.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.setPenAttributes = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[i];\n            var penAttr = service.currentWindow.penAttr;\n            b = packetData[++i];\n            penAttr.textTag = (b & 0xf0) >> 4; // tt\n\n            penAttr.offset = (b & 0x0c) >> 2; // o\n\n            penAttr.penSize = b & 0x03; // s\n\n            b = packetData[++i];\n            penAttr.italics = (b & 0x80) >> 7; // i\n\n            penAttr.underline = (b & 0x40) >> 6; // u\n\n            penAttr.edgeType = (b & 0x38) >> 3; // et\n\n            penAttr.fontStyle = b & 0x07; // fs\n\n            return i;\n        };\n        /**\n         * Parse and execute the SPC command.\n         *\n         * Set pen color of the current window.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.setPenColor = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[i];\n            var penColor = service.currentWindow.penColor;\n            b = packetData[++i];\n            penColor.fgOpacity = (b & 0xc0) >> 6; // fo\n\n            penColor.fgRed = (b & 0x30) >> 4; // fr\n\n            penColor.fgGreen = (b & 0x0c) >> 2; // fg\n\n            penColor.fgBlue = b & 0x03; // fb\n\n            b = packetData[++i];\n            penColor.bgOpacity = (b & 0xc0) >> 6; // bo\n\n            penColor.bgRed = (b & 0x30) >> 4; // br\n\n            penColor.bgGreen = (b & 0x0c) >> 2; // bg\n\n            penColor.bgBlue = b & 0x03; // bb\n\n            b = packetData[++i];\n            penColor.edgeRed = (b & 0x30) >> 4; // er\n\n            penColor.edgeGreen = (b & 0x0c) >> 2; // eg\n\n            penColor.edgeBlue = b & 0x03; // eb\n\n            return i;\n        };\n        /**\n         * Parse and execute the SPL command.\n         *\n         * Set pen location of the current window.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.setPenLocation = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[i];\n            var penLoc = service.currentWindow.penLoc; // Positioning isn't really supported at the moment, so this essentially just inserts a linebreak\n\n            service.currentWindow.pendingNewLine = true;\n            b = packetData[++i];\n            penLoc.row = b & 0x0f; // r\n\n            b = packetData[++i];\n            penLoc.column = b & 0x3f; // c\n\n            return i;\n        };\n        /**\n         * Execute the RST command.\n         *\n         * Reset service to a clean slate. Re-initialize.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Service}          Re-initialized service\n         */\n\n        Cea708Stream.prototype.reset = function (i, service) {\n            var pts = this.getPts(i);\n            this.flushDisplayed(pts, service);\n            return this.initService(service.serviceNum, i);\n        }; // This hash maps non-ASCII, special, and extended character codes to their\n        // proper Unicode equivalent. The first keys that are only a single byte\n        // are the non-standard ASCII characters, which simply map the CEA608 byte\n        // to the standard ASCII/Unicode. The two-byte keys that follow are the CEA608\n        // character codes, but have their MSB bitmasked with 0x03 so that a lookup\n        // can be performed regardless of the field and data channel on which the\n        // character code was received.\n\n        var CHARACTER_TRANSLATION = {\n            0x2a: 0xe1,\n            // á\n            0x5c: 0xe9,\n            // é\n            0x5e: 0xed,\n            // í\n            0x5f: 0xf3,\n            // ó\n            0x60: 0xfa,\n            // ú\n            0x7b: 0xe7,\n            // ç\n            0x7c: 0xf7,\n            // ÷\n            0x7d: 0xd1,\n            // Ñ\n            0x7e: 0xf1,\n            // ñ\n            0x7f: 0x2588,\n            // █\n            0x0130: 0xae,\n            // ®\n            0x0131: 0xb0,\n            // °\n            0x0132: 0xbd,\n            // ½\n            0x0133: 0xbf,\n            // ¿\n            0x0134: 0x2122,\n            // ™\n            0x0135: 0xa2,\n            // ¢\n            0x0136: 0xa3,\n            // £\n            0x0137: 0x266a,\n            // ♪\n            0x0138: 0xe0,\n            // à\n            0x0139: 0xa0,\n            //\n            0x013a: 0xe8,\n            // è\n            0x013b: 0xe2,\n            // â\n            0x013c: 0xea,\n            // ê\n            0x013d: 0xee,\n            // î\n            0x013e: 0xf4,\n            // ô\n            0x013f: 0xfb,\n            // û\n            0x0220: 0xc1,\n            // Á\n            0x0221: 0xc9,\n            // É\n            0x0222: 0xd3,\n            // Ó\n            0x0223: 0xda,\n            // Ú\n            0x0224: 0xdc,\n            // Ü\n            0x0225: 0xfc,\n            // ü\n            0x0226: 0x2018,\n            // ‘\n            0x0227: 0xa1,\n            // ¡\n            0x0228: 0x2a,\n            // *\n            0x0229: 0x27,\n            // '\n            0x022a: 0x2014,\n            // —\n            0x022b: 0xa9,\n            // ©\n            0x022c: 0x2120,\n            // ℠\n            0x022d: 0x2022,\n            // •\n            0x022e: 0x201c,\n            // “\n            0x022f: 0x201d,\n            // ”\n            0x0230: 0xc0,\n            // À\n            0x0231: 0xc2,\n            // Â\n            0x0232: 0xc7,\n            // Ç\n            0x0233: 0xc8,\n            // È\n            0x0234: 0xca,\n            // Ê\n            0x0235: 0xcb,\n            // Ë\n            0x0236: 0xeb,\n            // ë\n            0x0237: 0xce,\n            // Î\n            0x0238: 0xcf,\n            // Ï\n            0x0239: 0xef,\n            // ï\n            0x023a: 0xd4,\n            // Ô\n            0x023b: 0xd9,\n            // Ù\n            0x023c: 0xf9,\n            // ù\n            0x023d: 0xdb,\n            // Û\n            0x023e: 0xab,\n            // «\n            0x023f: 0xbb,\n            // »\n            0x0320: 0xc3,\n            // Ã\n            0x0321: 0xe3,\n            // ã\n            0x0322: 0xcd,\n            // Í\n            0x0323: 0xcc,\n            // Ì\n            0x0324: 0xec,\n            // ì\n            0x0325: 0xd2,\n            // Ò\n            0x0326: 0xf2,\n            // ò\n            0x0327: 0xd5,\n            // Õ\n            0x0328: 0xf5,\n            // õ\n            0x0329: 0x7b,\n            // {\n            0x032a: 0x7d,\n            // }\n            0x032b: 0x5c,\n            // \\\n            0x032c: 0x5e,\n            // ^\n            0x032d: 0x5f,\n            // _\n            0x032e: 0x7c,\n            // |\n            0x032f: 0x7e,\n            // ~\n            0x0330: 0xc4,\n            // Ä\n            0x0331: 0xe4,\n            // ä\n            0x0332: 0xd6,\n            // Ö\n            0x0333: 0xf6,\n            // ö\n            0x0334: 0xdf,\n            // ß\n            0x0335: 0xa5,\n            // ¥\n            0x0336: 0xa4,\n            // ¤\n            0x0337: 0x2502,\n            // │\n            0x0338: 0xc5,\n            // Å\n            0x0339: 0xe5,\n            // å\n            0x033a: 0xd8,\n            // Ø\n            0x033b: 0xf8,\n            // ø\n            0x033c: 0x250c,\n            // ┌\n            0x033d: 0x2510,\n            // ┐\n            0x033e: 0x2514,\n            // └\n            0x033f: 0x2518 // ┘\n        };\n\n        var getCharFromCode = function (code) {\n            if (code === null) {\n                return '';\n            }\n            code = CHARACTER_TRANSLATION[code] || code;\n            return String.fromCharCode(code);\n        }; // the index of the last row in a CEA-608 display buffer\n\n        var BOTTOM_ROW = 14; // This array is used for mapping PACs -> row #, since there's no way of\n        // getting it through bit logic.\n\n        var ROWS = [0x1100, 0x1120, 0x1200, 0x1220, 0x1500, 0x1520, 0x1600, 0x1620, 0x1700, 0x1720, 0x1000, 0x1300, 0x1320, 0x1400, 0x1420]; // CEA-608 captions are rendered onto a 34x15 matrix of character\n        // cells. The \"bottom\" row is the last element in the outer array.\n\n        var createDisplayBuffer = function () {\n            var result = [],\n                i = BOTTOM_ROW + 1;\n            while (i--) {\n                result.push('');\n            }\n            return result;\n        };\n        var Cea608Stream = function (field, dataChannel) {\n            Cea608Stream.prototype.init.call(this);\n            this.field_ = field || 0;\n            this.dataChannel_ = dataChannel || 0;\n            this.name_ = 'CC' + ((this.field_ << 1 | this.dataChannel_) + 1);\n            this.setConstants();\n            this.reset();\n            this.push = function (packet) {\n                var data, swap, char0, char1, text; // remove the parity bits\n\n                data = packet.ccData & 0x7f7f; // ignore duplicate control codes; the spec demands they're sent twice\n\n                if (data === this.lastControlCode_) {\n                    this.lastControlCode_ = null;\n                    return;\n                } // Store control codes\n\n                if ((data & 0xf000) === 0x1000) {\n                    this.lastControlCode_ = data;\n                } else if (data !== this.PADDING_) {\n                    this.lastControlCode_ = null;\n                }\n                char0 = data >>> 8;\n                char1 = data & 0xff;\n                if (data === this.PADDING_) {\n                    return;\n                } else if (data === this.RESUME_CAPTION_LOADING_) {\n                    this.mode_ = 'popOn';\n                } else if (data === this.END_OF_CAPTION_) {\n                    // If an EOC is received while in paint-on mode, the displayed caption\n                    // text should be swapped to non-displayed memory as if it was a pop-on\n                    // caption. Because of that, we should explicitly switch back to pop-on\n                    // mode\n                    this.mode_ = 'popOn';\n                    this.clearFormatting(packet.pts); // if a caption was being displayed, it's gone now\n\n                    this.flushDisplayed(packet.pts); // flip memory\n\n                    swap = this.displayed_;\n                    this.displayed_ = this.nonDisplayed_;\n                    this.nonDisplayed_ = swap; // start measuring the time to display the caption\n\n                    this.startPts_ = packet.pts;\n                } else if (data === this.ROLL_UP_2_ROWS_) {\n                    this.rollUpRows_ = 2;\n                    this.setRollUp(packet.pts);\n                } else if (data === this.ROLL_UP_3_ROWS_) {\n                    this.rollUpRows_ = 3;\n                    this.setRollUp(packet.pts);\n                } else if (data === this.ROLL_UP_4_ROWS_) {\n                    this.rollUpRows_ = 4;\n                    this.setRollUp(packet.pts);\n                } else if (data === this.CARRIAGE_RETURN_) {\n                    this.clearFormatting(packet.pts);\n                    this.flushDisplayed(packet.pts);\n                    this.shiftRowsUp_();\n                    this.startPts_ = packet.pts;\n                } else if (data === this.BACKSPACE_) {\n                    if (this.mode_ === 'popOn') {\n                        this.nonDisplayed_[this.row_] = this.nonDisplayed_[this.row_].slice(0, -1);\n                    } else {\n                        this.displayed_[this.row_] = this.displayed_[this.row_].slice(0, -1);\n                    }\n                } else if (data === this.ERASE_DISPLAYED_MEMORY_) {\n                    this.flushDisplayed(packet.pts);\n                    this.displayed_ = createDisplayBuffer();\n                } else if (data === this.ERASE_NON_DISPLAYED_MEMORY_) {\n                    this.nonDisplayed_ = createDisplayBuffer();\n                } else if (data === this.RESUME_DIRECT_CAPTIONING_) {\n                    if (this.mode_ !== 'paintOn') {\n                        // NOTE: This should be removed when proper caption positioning is\n                        // implemented\n                        this.flushDisplayed(packet.pts);\n                        this.displayed_ = createDisplayBuffer();\n                    }\n                    this.mode_ = 'paintOn';\n                    this.startPts_ = packet.pts; // Append special characters to caption text\n                } else if (this.isSpecialCharacter(char0, char1)) {\n                    // Bitmask char0 so that we can apply character transformations\n                    // regardless of field and data channel.\n                    // Then byte-shift to the left and OR with char1 so we can pass the\n                    // entire character code to `getCharFromCode`.\n                    char0 = (char0 & 0x03) << 8;\n                    text = getCharFromCode(char0 | char1);\n                    this[this.mode_](packet.pts, text);\n                    this.column_++; // Append extended characters to caption text\n                } else if (this.isExtCharacter(char0, char1)) {\n                    // Extended characters always follow their \"non-extended\" equivalents.\n                    // IE if a \"è\" is desired, you'll always receive \"eè\"; non-compliant\n                    // decoders are supposed to drop the \"è\", while compliant decoders\n                    // backspace the \"e\" and insert \"è\".\n                    // Delete the previous character\n                    if (this.mode_ === 'popOn') {\n                        this.nonDisplayed_[this.row_] = this.nonDisplayed_[this.row_].slice(0, -1);\n                    } else {\n                        this.displayed_[this.row_] = this.displayed_[this.row_].slice(0, -1);\n                    } // Bitmask char0 so that we can apply character transformations\n                    // regardless of field and data channel.\n                    // Then byte-shift to the left and OR with char1 so we can pass the\n                    // entire character code to `getCharFromCode`.\n\n                    char0 = (char0 & 0x03) << 8;\n                    text = getCharFromCode(char0 | char1);\n                    this[this.mode_](packet.pts, text);\n                    this.column_++; // Process mid-row codes\n                } else if (this.isMidRowCode(char0, char1)) {\n                    // Attributes are not additive, so clear all formatting\n                    this.clearFormatting(packet.pts); // According to the standard, mid-row codes\n                    // should be replaced with spaces, so add one now\n\n                    this[this.mode_](packet.pts, ' ');\n                    this.column_++;\n                    if ((char1 & 0xe) === 0xe) {\n                        this.addFormatting(packet.pts, ['i']);\n                    }\n                    if ((char1 & 0x1) === 0x1) {\n                        this.addFormatting(packet.pts, ['u']);\n                    } // Detect offset control codes and adjust cursor\n                } else if (this.isOffsetControlCode(char0, char1)) {\n                    // Cursor position is set by indent PAC (see below) in 4-column\n                    // increments, with an additional offset code of 1-3 to reach any\n                    // of the 32 columns specified by CEA-608. So all we need to do\n                    // here is increment the column cursor by the given offset.\n                    this.column_ += char1 & 0x03; // Detect PACs (Preamble Address Codes)\n                } else if (this.isPAC(char0, char1)) {\n                    // There's no logic for PAC -> row mapping, so we have to just\n                    // find the row code in an array and use its index :(\n                    var row = ROWS.indexOf(data & 0x1f20); // Configure the caption window if we're in roll-up mode\n\n                    if (this.mode_ === 'rollUp') {\n                        // This implies that the base row is incorrectly set.\n                        // As per the recommendation in CEA-608(Base Row Implementation), defer to the number\n                        // of roll-up rows set.\n                        if (row - this.rollUpRows_ + 1 < 0) {\n                            row = this.rollUpRows_ - 1;\n                        }\n                        this.setRollUp(packet.pts, row);\n                    }\n                    if (row !== this.row_) {\n                        // formatting is only persistent for current row\n                        this.clearFormatting(packet.pts);\n                        this.row_ = row;\n                    } // All PACs can apply underline, so detect and apply\n                    // (All odd-numbered second bytes set underline)\n\n                    if (char1 & 0x1 && this.formatting_.indexOf('u') === -1) {\n                        this.addFormatting(packet.pts, ['u']);\n                    }\n                    if ((data & 0x10) === 0x10) {\n                        // We've got an indent level code. Each successive even number\n                        // increments the column cursor by 4, so we can get the desired\n                        // column position by bit-shifting to the right (to get n/2)\n                        // and multiplying by 4.\n                        this.column_ = ((data & 0xe) >> 1) * 4;\n                    }\n                    if (this.isColorPAC(char1)) {\n                        // it's a color code, though we only support white, which\n                        // can be either normal or italicized. white italics can be\n                        // either 0x4e or 0x6e depending on the row, so we just\n                        // bitwise-and with 0xe to see if italics should be turned on\n                        if ((char1 & 0xe) === 0xe) {\n                            this.addFormatting(packet.pts, ['i']);\n                        }\n                    } // We have a normal character in char0, and possibly one in char1\n                } else if (this.isNormalChar(char0)) {\n                    if (char1 === 0x00) {\n                        char1 = null;\n                    }\n                    text = getCharFromCode(char0);\n                    text += getCharFromCode(char1);\n                    this[this.mode_](packet.pts, text);\n                    this.column_ += text.length;\n                } // finish data processing\n            };\n        };\n\n        Cea608Stream.prototype = new Stream$7(); // Trigger a cue point that captures the current state of the\n        // display buffer\n\n        Cea608Stream.prototype.flushDisplayed = function (pts) {\n            var content = this.displayed_ // remove spaces from the start and end of the string\n                .map(function (row, index) {\n                    try {\n                        return row.trim();\n                    } catch (e) {\n                        // Ordinarily, this shouldn't happen. However, caption\n                        // parsing errors should not throw exceptions and\n                        // break playback.\n                        this.trigger('log', {\n                            level: 'warn',\n                            message: 'Skipping a malformed 608 caption at index ' + index + '.'\n                        });\n                        return '';\n                    }\n                }, this) // combine all text rows to display in one cue\n                .join('\\n') // and remove blank rows from the start and end, but not the middle\n                .replace(/^\\n+|\\n+$/g, '');\n            if (content.length) {\n                this.trigger('data', {\n                    startPts: this.startPts_,\n                    endPts: pts,\n                    text: content,\n                    stream: this.name_\n                });\n            }\n        };\n        /**\n         * Zero out the data, used for startup and on seek\n         */\n\n        Cea608Stream.prototype.reset = function () {\n            this.mode_ = 'popOn'; // When in roll-up mode, the index of the last row that will\n            // actually display captions. If a caption is shifted to a row\n            // with a lower index than this, it is cleared from the display\n            // buffer\n\n            this.topRow_ = 0;\n            this.startPts_ = 0;\n            this.displayed_ = createDisplayBuffer();\n            this.nonDisplayed_ = createDisplayBuffer();\n            this.lastControlCode_ = null; // Track row and column for proper line-breaking and spacing\n\n            this.column_ = 0;\n            this.row_ = BOTTOM_ROW;\n            this.rollUpRows_ = 2; // This variable holds currently-applied formatting\n\n            this.formatting_ = [];\n        };\n        /**\n         * Sets up control code and related constants for this instance\n         */\n\n        Cea608Stream.prototype.setConstants = function () {\n            // The following attributes have these uses:\n            // ext_ :    char0 for mid-row codes, and the base for extended\n            //           chars (ext_+0, ext_+1, and ext_+2 are char0s for\n            //           extended codes)\n            // control_: char0 for control codes, except byte-shifted to the\n            //           left so that we can do this.control_ | CONTROL_CODE\n            // offset_:  char0 for tab offset codes\n            //\n            // It's also worth noting that control codes, and _only_ control codes,\n            // differ between field 1 and field2. Field 2 control codes are always\n            // their field 1 value plus 1. That's why there's the \"| field\" on the\n            // control value.\n            if (this.dataChannel_ === 0) {\n                this.BASE_ = 0x10;\n                this.EXT_ = 0x11;\n                this.CONTROL_ = (0x14 | this.field_) << 8;\n                this.OFFSET_ = 0x17;\n            } else if (this.dataChannel_ === 1) {\n                this.BASE_ = 0x18;\n                this.EXT_ = 0x19;\n                this.CONTROL_ = (0x1c | this.field_) << 8;\n                this.OFFSET_ = 0x1f;\n            } // Constants for the LSByte command codes recognized by Cea608Stream. This\n            // list is not exhaustive. For a more comprehensive listing and semantics see\n            // http://www.gpo.gov/fdsys/pkg/CFR-2010-title47-vol1/pdf/CFR-2010-title47-vol1-sec15-119.pdf\n            // Padding\n\n            this.PADDING_ = 0x0000; // Pop-on Mode\n\n            this.RESUME_CAPTION_LOADING_ = this.CONTROL_ | 0x20;\n            this.END_OF_CAPTION_ = this.CONTROL_ | 0x2f; // Roll-up Mode\n\n            this.ROLL_UP_2_ROWS_ = this.CONTROL_ | 0x25;\n            this.ROLL_UP_3_ROWS_ = this.CONTROL_ | 0x26;\n            this.ROLL_UP_4_ROWS_ = this.CONTROL_ | 0x27;\n            this.CARRIAGE_RETURN_ = this.CONTROL_ | 0x2d; // paint-on mode\n\n            this.RESUME_DIRECT_CAPTIONING_ = this.CONTROL_ | 0x29; // Erasure\n\n            this.BACKSPACE_ = this.CONTROL_ | 0x21;\n            this.ERASE_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2c;\n            this.ERASE_NON_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2e;\n        };\n        /**\n         * Detects if the 2-byte packet data is a special character\n         *\n         * Special characters have a second byte in the range 0x30 to 0x3f,\n         * with the first byte being 0x11 (for data channel 1) or 0x19 (for\n         * data channel 2).\n         *\n         * @param  {Integer} char0 The first byte\n         * @param  {Integer} char1 The second byte\n         * @return {Boolean}       Whether the 2 bytes are an special character\n         */\n\n        Cea608Stream.prototype.isSpecialCharacter = function (char0, char1) {\n            return char0 === this.EXT_ && char1 >= 0x30 && char1 <= 0x3f;\n        };\n        /**\n         * Detects if the 2-byte packet data is an extended character\n         *\n         * Extended characters have a second byte in the range 0x20 to 0x3f,\n         * with the first byte being 0x12 or 0x13 (for data channel 1) or\n         * 0x1a or 0x1b (for data channel 2).\n         *\n         * @param  {Integer} char0 The first byte\n         * @param  {Integer} char1 The second byte\n         * @return {Boolean}       Whether the 2 bytes are an extended character\n         */\n\n        Cea608Stream.prototype.isExtCharacter = function (char0, char1) {\n            return (char0 === this.EXT_ + 1 || char0 === this.EXT_ + 2) && char1 >= 0x20 && char1 <= 0x3f;\n        };\n        /**\n         * Detects if the 2-byte packet is a mid-row code\n         *\n         * Mid-row codes have a second byte in the range 0x20 to 0x2f, with\n         * the first byte being 0x11 (for data channel 1) or 0x19 (for data\n         * channel 2).\n         *\n         * @param  {Integer} char0 The first byte\n         * @param  {Integer} char1 The second byte\n         * @return {Boolean}       Whether the 2 bytes are a mid-row code\n         */\n\n        Cea608Stream.prototype.isMidRowCode = function (char0, char1) {\n            return char0 === this.EXT_ && char1 >= 0x20 && char1 <= 0x2f;\n        };\n        /**\n         * Detects if the 2-byte packet is an offset control code\n         *\n         * Offset control codes have a second byte in the range 0x21 to 0x23,\n         * with the first byte being 0x17 (for data channel 1) or 0x1f (for\n         * data channel 2).\n         *\n         * @param  {Integer} char0 The first byte\n         * @param  {Integer} char1 The second byte\n         * @return {Boolean}       Whether the 2 bytes are an offset control code\n         */\n\n        Cea608Stream.prototype.isOffsetControlCode = function (char0, char1) {\n            return char0 === this.OFFSET_ && char1 >= 0x21 && char1 <= 0x23;\n        };\n        /**\n         * Detects if the 2-byte packet is a Preamble Address Code\n         *\n         * PACs have a first byte in the range 0x10 to 0x17 (for data channel 1)\n         * or 0x18 to 0x1f (for data channel 2), with the second byte in the\n         * range 0x40 to 0x7f.\n         *\n         * @param  {Integer} char0 The first byte\n         * @param  {Integer} char1 The second byte\n         * @return {Boolean}       Whether the 2 bytes are a PAC\n         */\n\n        Cea608Stream.prototype.isPAC = function (char0, char1) {\n            return char0 >= this.BASE_ && char0 < this.BASE_ + 8 && char1 >= 0x40 && char1 <= 0x7f;\n        };\n        /**\n         * Detects if a packet's second byte is in the range of a PAC color code\n         *\n         * PAC color codes have the second byte be in the range 0x40 to 0x4f, or\n         * 0x60 to 0x6f.\n         *\n         * @param  {Integer} char1 The second byte\n         * @return {Boolean}       Whether the byte is a color PAC\n         */\n\n        Cea608Stream.prototype.isColorPAC = function (char1) {\n            return char1 >= 0x40 && char1 <= 0x4f || char1 >= 0x60 && char1 <= 0x7f;\n        };\n        /**\n         * Detects if a single byte is in the range of a normal character\n         *\n         * Normal text bytes are in the range 0x20 to 0x7f.\n         *\n         * @param  {Integer} char  The byte\n         * @return {Boolean}       Whether the byte is a normal character\n         */\n\n        Cea608Stream.prototype.isNormalChar = function (char) {\n            return char >= 0x20 && char <= 0x7f;\n        };\n        /**\n         * Configures roll-up\n         *\n         * @param  {Integer} pts         Current PTS\n         * @param  {Integer} newBaseRow  Used by PACs to slide the current window to\n         *                               a new position\n         */\n\n        Cea608Stream.prototype.setRollUp = function (pts, newBaseRow) {\n            // Reset the base row to the bottom row when switching modes\n            if (this.mode_ !== 'rollUp') {\n                this.row_ = BOTTOM_ROW;\n                this.mode_ = 'rollUp'; // Spec says to wipe memories when switching to roll-up\n\n                this.flushDisplayed(pts);\n                this.nonDisplayed_ = createDisplayBuffer();\n                this.displayed_ = createDisplayBuffer();\n            }\n            if (newBaseRow !== undefined && newBaseRow !== this.row_) {\n                // move currently displayed captions (up or down) to the new base row\n                for (var i = 0; i < this.rollUpRows_; i++) {\n                    this.displayed_[newBaseRow - i] = this.displayed_[this.row_ - i];\n                    this.displayed_[this.row_ - i] = '';\n                }\n            }\n            if (newBaseRow === undefined) {\n                newBaseRow = this.row_;\n            }\n            this.topRow_ = newBaseRow - this.rollUpRows_ + 1;\n        }; // Adds the opening HTML tag for the passed character to the caption text,\n        // and keeps track of it for later closing\n\n        Cea608Stream.prototype.addFormatting = function (pts, format) {\n            this.formatting_ = this.formatting_.concat(format);\n            var text = format.reduce(function (text, format) {\n                return text + '<' + format + '>';\n            }, '');\n            this[this.mode_](pts, text);\n        }; // Adds HTML closing tags for current formatting to caption text and\n        // clears remembered formatting\n\n        Cea608Stream.prototype.clearFormatting = function (pts) {\n            if (!this.formatting_.length) {\n                return;\n            }\n            var text = this.formatting_.reverse().reduce(function (text, format) {\n                return text + '</' + format + '>';\n            }, '');\n            this.formatting_ = [];\n            this[this.mode_](pts, text);\n        }; // Mode Implementations\n\n        Cea608Stream.prototype.popOn = function (pts, text) {\n            var baseRow = this.nonDisplayed_[this.row_]; // buffer characters\n\n            baseRow += text;\n            this.nonDisplayed_[this.row_] = baseRow;\n        };\n        Cea608Stream.prototype.rollUp = function (pts, text) {\n            var baseRow = this.displayed_[this.row_];\n            baseRow += text;\n            this.displayed_[this.row_] = baseRow;\n        };\n        Cea608Stream.prototype.shiftRowsUp_ = function () {\n            var i; // clear out inactive rows\n\n            for (i = 0; i < this.topRow_; i++) {\n                this.displayed_[i] = '';\n            }\n            for (i = this.row_ + 1; i < BOTTOM_ROW + 1; i++) {\n                this.displayed_[i] = '';\n            } // shift displayed rows up\n\n            for (i = this.topRow_; i < this.row_; i++) {\n                this.displayed_[i] = this.displayed_[i + 1];\n            } // clear out the bottom row\n\n            this.displayed_[this.row_] = '';\n        };\n        Cea608Stream.prototype.paintOn = function (pts, text) {\n            var baseRow = this.displayed_[this.row_];\n            baseRow += text;\n            this.displayed_[this.row_] = baseRow;\n        }; // exports\n\n        var captionStream = {\n            CaptionStream: CaptionStream$2,\n            Cea608Stream: Cea608Stream,\n            Cea708Stream: Cea708Stream\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n\n        var streamTypes = {\n            H264_STREAM_TYPE: 0x1B,\n            ADTS_STREAM_TYPE: 0x0F,\n            METADATA_STREAM_TYPE: 0x15\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Accepts program elementary stream (PES) data events and corrects\n         * decode and presentation time stamps to account for a rollover\n         * of the 33 bit value.\n         */\n\n        var Stream$6 = stream;\n        var MAX_TS = 8589934592;\n        var RO_THRESH = 4294967296;\n        var TYPE_SHARED = 'shared';\n        var handleRollover$1 = function (value, reference) {\n            var direction = 1;\n            if (value > reference) {\n                // If the current timestamp value is greater than our reference timestamp and we detect a\n                // timestamp rollover, this means the roll over is happening in the opposite direction.\n                // Example scenario: Enter a long stream/video just after a rollover occurred. The reference\n                // point will be set to a small number, e.g. 1. The user then seeks backwards over the\n                // rollover point. In loading this segment, the timestamp values will be very large,\n                // e.g. 2^33 - 1. Since this comes before the data we loaded previously, we want to adjust\n                // the time stamp to be `value - 2^33`.\n                direction = -1;\n            } // Note: A seek forwards or back that is greater than the RO_THRESH (2^32, ~13 hours) will\n            // cause an incorrect adjustment.\n\n            while (Math.abs(reference - value) > RO_THRESH) {\n                value += direction * MAX_TS;\n            }\n            return value;\n        };\n        var TimestampRolloverStream$1 = function (type) {\n            var lastDTS, referenceDTS;\n            TimestampRolloverStream$1.prototype.init.call(this); // The \"shared\" type is used in cases where a stream will contain muxed\n            // video and audio. We could use `undefined` here, but having a string\n            // makes debugging a little clearer.\n\n            this.type_ = type || TYPE_SHARED;\n            this.push = function (data) {\n                // Any \"shared\" rollover streams will accept _all_ data. Otherwise,\n                // streams will only accept data that matches their type.\n                if (this.type_ !== TYPE_SHARED && data.type !== this.type_) {\n                    return;\n                }\n                if (referenceDTS === undefined) {\n                    referenceDTS = data.dts;\n                }\n                data.dts = handleRollover$1(data.dts, referenceDTS);\n                data.pts = handleRollover$1(data.pts, referenceDTS);\n                lastDTS = data.dts;\n                this.trigger('data', data);\n            };\n            this.flush = function () {\n                referenceDTS = lastDTS;\n                this.trigger('done');\n            };\n            this.endTimeline = function () {\n                this.flush();\n                this.trigger('endedtimeline');\n            };\n            this.discontinuity = function () {\n                referenceDTS = void 0;\n                lastDTS = void 0;\n            };\n            this.reset = function () {\n                this.discontinuity();\n                this.trigger('reset');\n            };\n        };\n        TimestampRolloverStream$1.prototype = new Stream$6();\n        var timestampRolloverStream = {\n            TimestampRolloverStream: TimestampRolloverStream$1,\n            handleRollover: handleRollover$1\n        }; // Once IE11 support is dropped, this function should be removed.\n\n        var typedArrayIndexOf$1 = (typedArray, element, fromIndex) => {\n            if (!typedArray) {\n                return -1;\n            }\n            var currentIndex = fromIndex;\n            for (; currentIndex < typedArray.length; currentIndex++) {\n                if (typedArray[currentIndex] === element) {\n                    return currentIndex;\n                }\n            }\n            return -1;\n        };\n        var typedArray = {\n            typedArrayIndexOf: typedArrayIndexOf$1\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Tools for parsing ID3 frame data\n         * @see http://id3.org/id3v2.3.0\n         */\n\n        var typedArrayIndexOf = typedArray.typedArrayIndexOf,\n            // Frames that allow different types of text encoding contain a text\n            // encoding description byte [ID3v2.4.0 section 4.]\n            textEncodingDescriptionByte = {\n                Iso88591: 0x00,\n                // ISO-8859-1, terminated with \\0.\n                Utf16: 0x01,\n                // UTF-16 encoded Unicode BOM, terminated with \\0\\0\n                Utf16be: 0x02,\n                // UTF-16BE encoded Unicode, without BOM, terminated with \\0\\0\n                Utf8: 0x03 // UTF-8 encoded Unicode, terminated with \\0\n            },\n            // return a percent-encoded representation of the specified byte range\n            // @see http://en.wikipedia.org/wiki/Percent-encoding\n            percentEncode$1 = function (bytes, start, end) {\n                var i,\n                    result = '';\n                for (i = start; i < end; i++) {\n                    result += '%' + ('00' + bytes[i].toString(16)).slice(-2);\n                }\n                return result;\n            },\n            // return the string representation of the specified byte range,\n            // interpreted as UTf-8.\n            parseUtf8 = function (bytes, start, end) {\n                return decodeURIComponent(percentEncode$1(bytes, start, end));\n            },\n            // return the string representation of the specified byte range,\n            // interpreted as ISO-8859-1.\n            parseIso88591$1 = function (bytes, start, end) {\n                return unescape(percentEncode$1(bytes, start, end)); // jshint ignore:line\n            },\n            parseSyncSafeInteger$1 = function (data) {\n                return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3];\n            },\n            frameParsers = {\n                'APIC': function (frame) {\n                    var i = 1,\n                        mimeTypeEndIndex,\n                        descriptionEndIndex,\n                        LINK_MIME_TYPE = '-->';\n                    if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {\n                        // ignore frames with unrecognized character encodings\n                        return;\n                    } // parsing fields [ID3v2.4.0 section 4.14.]\n\n                    mimeTypeEndIndex = typedArrayIndexOf(frame.data, 0, i);\n                    if (mimeTypeEndIndex < 0) {\n                        // malformed frame\n                        return;\n                    } // parsing Mime type field (terminated with \\0)\n\n                    frame.mimeType = parseIso88591$1(frame.data, i, mimeTypeEndIndex);\n                    i = mimeTypeEndIndex + 1; // parsing 1-byte Picture Type field\n\n                    frame.pictureType = frame.data[i];\n                    i++;\n                    descriptionEndIndex = typedArrayIndexOf(frame.data, 0, i);\n                    if (descriptionEndIndex < 0) {\n                        // malformed frame\n                        return;\n                    } // parsing Description field (terminated with \\0)\n\n                    frame.description = parseUtf8(frame.data, i, descriptionEndIndex);\n                    i = descriptionEndIndex + 1;\n                    if (frame.mimeType === LINK_MIME_TYPE) {\n                        // parsing Picture Data field as URL (always represented as ISO-8859-1 [ID3v2.4.0 section 4.])\n                        frame.url = parseIso88591$1(frame.data, i, frame.data.length);\n                    } else {\n                        // parsing Picture Data field as binary data\n                        frame.pictureData = frame.data.subarray(i, frame.data.length);\n                    }\n                },\n                'T*': function (frame) {\n                    if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {\n                        // ignore frames with unrecognized character encodings\n                        return;\n                    } // parse text field, do not include null terminator in the frame value\n                    // frames that allow different types of encoding contain terminated text [ID3v2.4.0 section 4.]\n\n                    frame.value = parseUtf8(frame.data, 1, frame.data.length).replace(/\\0*$/, ''); // text information frames supports multiple strings, stored as a terminator separated list [ID3v2.4.0 section 4.2.]\n\n                    frame.values = frame.value.split('\\0');\n                },\n                'TXXX': function (frame) {\n                    var descriptionEndIndex;\n                    if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {\n                        // ignore frames with unrecognized character encodings\n                        return;\n                    }\n                    descriptionEndIndex = typedArrayIndexOf(frame.data, 0, 1);\n                    if (descriptionEndIndex === -1) {\n                        return;\n                    } // parse the text fields\n\n                    frame.description = parseUtf8(frame.data, 1, descriptionEndIndex); // do not include the null terminator in the tag value\n                    // frames that allow different types of encoding contain terminated text\n                    // [ID3v2.4.0 section 4.]\n\n                    frame.value = parseUtf8(frame.data, descriptionEndIndex + 1, frame.data.length).replace(/\\0*$/, '');\n                    frame.data = frame.value;\n                },\n                'W*': function (frame) {\n                    // parse URL field; URL fields are always represented as ISO-8859-1 [ID3v2.4.0 section 4.]\n                    // if the value is followed by a string termination all the following information should be ignored [ID3v2.4.0 section 4.3]\n                    frame.url = parseIso88591$1(frame.data, 0, frame.data.length).replace(/\\0.*$/, '');\n                },\n                'WXXX': function (frame) {\n                    var descriptionEndIndex;\n                    if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {\n                        // ignore frames with unrecognized character encodings\n                        return;\n                    }\n                    descriptionEndIndex = typedArrayIndexOf(frame.data, 0, 1);\n                    if (descriptionEndIndex === -1) {\n                        return;\n                    } // parse the description and URL fields\n\n                    frame.description = parseUtf8(frame.data, 1, descriptionEndIndex); // URL fields are always represented as ISO-8859-1 [ID3v2.4.0 section 4.]\n                    // if the value is followed by a string termination all the following information\n                    // should be ignored [ID3v2.4.0 section 4.3]\n\n                    frame.url = parseIso88591$1(frame.data, descriptionEndIndex + 1, frame.data.length).replace(/\\0.*$/, '');\n                },\n                'PRIV': function (frame) {\n                    var i;\n                    for (i = 0; i < frame.data.length; i++) {\n                        if (frame.data[i] === 0) {\n                            // parse the description and URL fields\n                            frame.owner = parseIso88591$1(frame.data, 0, i);\n                            break;\n                        }\n                    }\n                    frame.privateData = frame.data.subarray(i + 1);\n                    frame.data = frame.privateData;\n                }\n            };\n        var parseId3Frames$1 = function (data) {\n            var frameSize,\n                frameHeader,\n                frameStart = 10,\n                tagSize = 0,\n                frames = []; // If we don't have enough data for a header, 10 bytes,\n            // or 'ID3' in the first 3 bytes this is not a valid ID3 tag.\n\n            if (data.length < 10 || data[0] !== 'I'.charCodeAt(0) || data[1] !== 'D'.charCodeAt(0) || data[2] !== '3'.charCodeAt(0)) {\n                return;\n            } // the frame size is transmitted as a 28-bit integer in the\n            // last four bytes of the ID3 header.\n            // The most significant bit of each byte is dropped and the\n            // results concatenated to recover the actual value.\n\n            tagSize = parseSyncSafeInteger$1(data.subarray(6, 10)); // ID3 reports the tag size excluding the header but it's more\n            // convenient for our comparisons to include it\n\n            tagSize += 10; // check bit 6 of byte 5 for the extended header flag.\n\n            var hasExtendedHeader = data[5] & 0x40;\n            if (hasExtendedHeader) {\n                // advance the frame start past the extended header\n                frameStart += 4; // header size field\n\n                frameStart += parseSyncSafeInteger$1(data.subarray(10, 14));\n                tagSize -= parseSyncSafeInteger$1(data.subarray(16, 20)); // clip any padding off the end\n            } // parse one or more ID3 frames\n            // http://id3.org/id3v2.3.0#ID3v2_frame_overview\n\n            do {\n                // determine the number of bytes in this frame\n                frameSize = parseSyncSafeInteger$1(data.subarray(frameStart + 4, frameStart + 8));\n                if (frameSize < 1) {\n                    break;\n                }\n                frameHeader = String.fromCharCode(data[frameStart], data[frameStart + 1], data[frameStart + 2], data[frameStart + 3]);\n                var frame = {\n                    id: frameHeader,\n                    data: data.subarray(frameStart + 10, frameStart + frameSize + 10)\n                };\n                frame.key = frame.id; // parse frame values\n\n                if (frameParsers[frame.id]) {\n                    // use frame specific parser\n                    frameParsers[frame.id](frame);\n                } else if (frame.id[0] === 'T') {\n                    // use text frame generic parser\n                    frameParsers['T*'](frame);\n                } else if (frame.id[0] === 'W') {\n                    // use URL link frame generic parser\n                    frameParsers['W*'](frame);\n                }\n                frames.push(frame);\n                frameStart += 10; // advance past the frame header\n\n                frameStart += frameSize; // advance past the frame body\n            } while (frameStart < tagSize);\n            return frames;\n        };\n        var parseId3 = {\n            parseId3Frames: parseId3Frames$1,\n            parseSyncSafeInteger: parseSyncSafeInteger$1,\n            frameParsers: frameParsers\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Accepts program elementary stream (PES) data events and parses out\n         * ID3 metadata from them, if present.\n         * @see http://id3.org/id3v2.3.0\n         */\n\n        var Stream$5 = stream,\n            StreamTypes$3 = streamTypes,\n            id3 = parseId3,\n            MetadataStream;\n        MetadataStream = function (options) {\n            var settings = {\n                    // the bytes of the program-level descriptor field in MP2T\n                    // see ISO/IEC 13818-1:2013 (E), section 2.6 \"Program and\n                    // program element descriptors\"\n                    descriptor: options && options.descriptor\n                },\n                // the total size in bytes of the ID3 tag being parsed\n                tagSize = 0,\n                // tag data that is not complete enough to be parsed\n                buffer = [],\n                // the total number of bytes currently in the buffer\n                bufferSize = 0,\n                i;\n            MetadataStream.prototype.init.call(this); // calculate the text track in-band metadata track dispatch type\n            // https://html.spec.whatwg.org/multipage/embedded-content.html#steps-to-expose-a-media-resource-specific-text-track\n\n            this.dispatchType = StreamTypes$3.METADATA_STREAM_TYPE.toString(16);\n            if (settings.descriptor) {\n                for (i = 0; i < settings.descriptor.length; i++) {\n                    this.dispatchType += ('00' + settings.descriptor[i].toString(16)).slice(-2);\n                }\n            }\n            this.push = function (chunk) {\n                var tag, frameStart, frameSize, frame, i, frameHeader;\n                if (chunk.type !== 'timed-metadata') {\n                    return;\n                } // if data_alignment_indicator is set in the PES header,\n                // we must have the start of a new ID3 tag. Assume anything\n                // remaining in the buffer was malformed and throw it out\n\n                if (chunk.dataAlignmentIndicator) {\n                    bufferSize = 0;\n                    buffer.length = 0;\n                } // ignore events that don't look like ID3 data\n\n                if (buffer.length === 0 && (chunk.data.length < 10 || chunk.data[0] !== 'I'.charCodeAt(0) || chunk.data[1] !== 'D'.charCodeAt(0) || chunk.data[2] !== '3'.charCodeAt(0))) {\n                    this.trigger('log', {\n                        level: 'warn',\n                        message: 'Skipping unrecognized metadata packet'\n                    });\n                    return;\n                } // add this chunk to the data we've collected so far\n\n                buffer.push(chunk);\n                bufferSize += chunk.data.byteLength; // grab the size of the entire frame from the ID3 header\n\n                if (buffer.length === 1) {\n                    // the frame size is transmitted as a 28-bit integer in the\n                    // last four bytes of the ID3 header.\n                    // The most significant bit of each byte is dropped and the\n                    // results concatenated to recover the actual value.\n                    tagSize = id3.parseSyncSafeInteger(chunk.data.subarray(6, 10)); // ID3 reports the tag size excluding the header but it's more\n                    // convenient for our comparisons to include it\n\n                    tagSize += 10;\n                } // if the entire frame has not arrived, wait for more data\n\n                if (bufferSize < tagSize) {\n                    return;\n                } // collect the entire frame so it can be parsed\n\n                tag = {\n                    data: new Uint8Array(tagSize),\n                    frames: [],\n                    pts: buffer[0].pts,\n                    dts: buffer[0].dts\n                };\n                for (i = 0; i < tagSize;) {\n                    tag.data.set(buffer[0].data.subarray(0, tagSize - i), i);\n                    i += buffer[0].data.byteLength;\n                    bufferSize -= buffer[0].data.byteLength;\n                    buffer.shift();\n                } // find the start of the first frame and the end of the tag\n\n                frameStart = 10;\n                if (tag.data[5] & 0x40) {\n                    // advance the frame start past the extended header\n                    frameStart += 4; // header size field\n\n                    frameStart += id3.parseSyncSafeInteger(tag.data.subarray(10, 14)); // clip any padding off the end\n\n                    tagSize -= id3.parseSyncSafeInteger(tag.data.subarray(16, 20));\n                } // parse one or more ID3 frames\n                // http://id3.org/id3v2.3.0#ID3v2_frame_overview\n\n                do {\n                    // determine the number of bytes in this frame\n                    frameSize = id3.parseSyncSafeInteger(tag.data.subarray(frameStart + 4, frameStart + 8));\n                    if (frameSize < 1) {\n                        this.trigger('log', {\n                            level: 'warn',\n                            message: 'Malformed ID3 frame encountered. Skipping remaining metadata parsing.'\n                        }); // If the frame is malformed, don't parse any further frames but allow previous valid parsed frames\n                        // to be sent along.\n\n                        break;\n                    }\n                    frameHeader = String.fromCharCode(tag.data[frameStart], tag.data[frameStart + 1], tag.data[frameStart + 2], tag.data[frameStart + 3]);\n                    frame = {\n                        id: frameHeader,\n                        data: tag.data.subarray(frameStart + 10, frameStart + frameSize + 10)\n                    };\n                    frame.key = frame.id; // parse frame values\n\n                    if (id3.frameParsers[frame.id]) {\n                        // use frame specific parser\n                        id3.frameParsers[frame.id](frame);\n                    } else if (frame.id[0] === 'T') {\n                        // use text frame generic parser\n                        id3.frameParsers['T*'](frame);\n                    } else if (frame.id[0] === 'W') {\n                        // use URL link frame generic parser\n                        id3.frameParsers['W*'](frame);\n                    } // handle the special PRIV frame used to indicate the start\n                    // time for raw AAC data\n\n                    if (frame.owner === 'com.apple.streaming.transportStreamTimestamp') {\n                        var d = frame.data,\n                            size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2;\n                        size *= 4;\n                        size += d[7] & 0x03;\n                        frame.timeStamp = size; // in raw AAC, all subsequent data will be timestamped based\n                        // on the value of this frame\n                        // we couldn't have known the appropriate pts and dts before\n                        // parsing this ID3 tag so set those values now\n\n                        if (tag.pts === undefined && tag.dts === undefined) {\n                            tag.pts = frame.timeStamp;\n                            tag.dts = frame.timeStamp;\n                        }\n                        this.trigger('timestamp', frame);\n                    }\n                    tag.frames.push(frame);\n                    frameStart += 10; // advance past the frame header\n\n                    frameStart += frameSize; // advance past the frame body\n                } while (frameStart < tagSize);\n                this.trigger('data', tag);\n            };\n        };\n        MetadataStream.prototype = new Stream$5();\n        var metadataStream = MetadataStream;\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * A stream-based mp2t to mp4 converter. This utility can be used to\n         * deliver mp4s to a SourceBuffer on platforms that support native\n         * Media Source Extensions.\n         */\n\n        var Stream$4 = stream,\n            CaptionStream$1 = captionStream,\n            StreamTypes$2 = streamTypes,\n            TimestampRolloverStream = timestampRolloverStream.TimestampRolloverStream; // object types\n\n        var TransportPacketStream, TransportParseStream, ElementaryStream; // constants\n\n        var MP2T_PACKET_LENGTH$1 = 188,\n            // bytes\n            SYNC_BYTE$1 = 0x47;\n        /**\n         * Splits an incoming stream of binary data into MPEG-2 Transport\n         * Stream packets.\n         */\n\n        TransportPacketStream = function () {\n            var buffer = new Uint8Array(MP2T_PACKET_LENGTH$1),\n                bytesInBuffer = 0;\n            TransportPacketStream.prototype.init.call(this); // Deliver new bytes to the stream.\n\n            /**\n             * Split a stream of data into M2TS packets\n             **/\n\n            this.push = function (bytes) {\n                var startIndex = 0,\n                    endIndex = MP2T_PACKET_LENGTH$1,\n                    everything; // If there are bytes remaining from the last segment, prepend them to the\n                // bytes that were pushed in\n\n                if (bytesInBuffer) {\n                    everything = new Uint8Array(bytes.byteLength + bytesInBuffer);\n                    everything.set(buffer.subarray(0, bytesInBuffer));\n                    everything.set(bytes, bytesInBuffer);\n                    bytesInBuffer = 0;\n                } else {\n                    everything = bytes;\n                } // While we have enough data for a packet\n\n                while (endIndex < everything.byteLength) {\n                    // Look for a pair of start and end sync bytes in the data..\n                    if (everything[startIndex] === SYNC_BYTE$1 && everything[endIndex] === SYNC_BYTE$1) {\n                        // We found a packet so emit it and jump one whole packet forward in\n                        // the stream\n                        this.trigger('data', everything.subarray(startIndex, endIndex));\n                        startIndex += MP2T_PACKET_LENGTH$1;\n                        endIndex += MP2T_PACKET_LENGTH$1;\n                        continue;\n                    } // If we get here, we have somehow become de-synchronized and we need to step\n                    // forward one byte at a time until we find a pair of sync bytes that denote\n                    // a packet\n\n                    startIndex++;\n                    endIndex++;\n                } // If there was some data left over at the end of the segment that couldn't\n                // possibly be a whole packet, keep it because it might be the start of a packet\n                // that continues in the next segment\n\n                if (startIndex < everything.byteLength) {\n                    buffer.set(everything.subarray(startIndex), 0);\n                    bytesInBuffer = everything.byteLength - startIndex;\n                }\n            };\n            /**\n             * Passes identified M2TS packets to the TransportParseStream to be parsed\n             **/\n\n            this.flush = function () {\n                // If the buffer contains a whole packet when we are being flushed, emit it\n                // and empty the buffer. Otherwise hold onto the data because it may be\n                // important for decoding the next segment\n                if (bytesInBuffer === MP2T_PACKET_LENGTH$1 && buffer[0] === SYNC_BYTE$1) {\n                    this.trigger('data', buffer);\n                    bytesInBuffer = 0;\n                }\n                this.trigger('done');\n            };\n            this.endTimeline = function () {\n                this.flush();\n                this.trigger('endedtimeline');\n            };\n            this.reset = function () {\n                bytesInBuffer = 0;\n                this.trigger('reset');\n            };\n        };\n        TransportPacketStream.prototype = new Stream$4();\n        /**\n         * Accepts an MP2T TransportPacketStream and emits data events with parsed\n         * forms of the individual transport stream packets.\n         */\n\n        TransportParseStream = function () {\n            var parsePsi, parsePat, parsePmt, self;\n            TransportParseStream.prototype.init.call(this);\n            self = this;\n            this.packetsWaitingForPmt = [];\n            this.programMapTable = undefined;\n            parsePsi = function (payload, psi) {\n                var offset = 0; // PSI packets may be split into multiple sections and those\n                // sections may be split into multiple packets. If a PSI\n                // section starts in this packet, the payload_unit_start_indicator\n                // will be true and the first byte of the payload will indicate\n                // the offset from the current position to the start of the\n                // section.\n\n                if (psi.payloadUnitStartIndicator) {\n                    offset += payload[offset] + 1;\n                }\n                if (psi.type === 'pat') {\n                    parsePat(payload.subarray(offset), psi);\n                } else {\n                    parsePmt(payload.subarray(offset), psi);\n                }\n            };\n            parsePat = function (payload, pat) {\n                pat.section_number = payload[7]; // eslint-disable-line camelcase\n\n                pat.last_section_number = payload[8]; // eslint-disable-line camelcase\n                // skip the PSI header and parse the first PMT entry\n\n                self.pmtPid = (payload[10] & 0x1F) << 8 | payload[11];\n                pat.pmtPid = self.pmtPid;\n            };\n            /**\n             * Parse out the relevant fields of a Program Map Table (PMT).\n             * @param payload {Uint8Array} the PMT-specific portion of an MP2T\n             * packet. The first byte in this array should be the table_id\n             * field.\n             * @param pmt {object} the object that should be decorated with\n             * fields parsed from the PMT.\n             */\n\n            parsePmt = function (payload, pmt) {\n                var sectionLength, tableEnd, programInfoLength, offset; // PMTs can be sent ahead of the time when they should actually\n                // take effect. We don't believe this should ever be the case\n                // for HLS but we'll ignore \"forward\" PMT declarations if we see\n                // them. Future PMT declarations have the current_next_indicator\n                // set to zero.\n\n                if (!(payload[5] & 0x01)) {\n                    return;\n                } // overwrite any existing program map table\n\n                self.programMapTable = {\n                    video: null,\n                    audio: null,\n                    'timed-metadata': {}\n                }; // the mapping table ends at the end of the current section\n\n                sectionLength = (payload[1] & 0x0f) << 8 | payload[2];\n                tableEnd = 3 + sectionLength - 4; // to determine where the table is, we have to figure out how\n                // long the program info descriptors are\n\n                programInfoLength = (payload[10] & 0x0f) << 8 | payload[11]; // advance the offset to the first entry in the mapping table\n\n                offset = 12 + programInfoLength;\n                while (offset < tableEnd) {\n                    var streamType = payload[offset];\n                    var pid = (payload[offset + 1] & 0x1F) << 8 | payload[offset + 2]; // only map a single elementary_pid for audio and video stream types\n                    // TODO: should this be done for metadata too? for now maintain behavior of\n                    //       multiple metadata streams\n\n                    if (streamType === StreamTypes$2.H264_STREAM_TYPE && self.programMapTable.video === null) {\n                        self.programMapTable.video = pid;\n                    } else if (streamType === StreamTypes$2.ADTS_STREAM_TYPE && self.programMapTable.audio === null) {\n                        self.programMapTable.audio = pid;\n                    } else if (streamType === StreamTypes$2.METADATA_STREAM_TYPE) {\n                        // map pid to stream type for metadata streams\n                        self.programMapTable['timed-metadata'][pid] = streamType;\n                    } // move to the next table entry\n                    // skip past the elementary stream descriptors, if present\n\n                    offset += ((payload[offset + 3] & 0x0F) << 8 | payload[offset + 4]) + 5;\n                } // record the map on the packet as well\n\n                pmt.programMapTable = self.programMapTable;\n            };\n            /**\n             * Deliver a new MP2T packet to the next stream in the pipeline.\n             */\n\n            this.push = function (packet) {\n                var result = {},\n                    offset = 4;\n                result.payloadUnitStartIndicator = !!(packet[1] & 0x40); // pid is a 13-bit field starting at the last bit of packet[1]\n\n                result.pid = packet[1] & 0x1f;\n                result.pid <<= 8;\n                result.pid |= packet[2]; // if an adaption field is present, its length is specified by the\n                // fifth byte of the TS packet header. The adaptation field is\n                // used to add stuffing to PES packets that don't fill a complete\n                // TS packet, and to specify some forms of timing and control data\n                // that we do not currently use.\n\n                if ((packet[3] & 0x30) >>> 4 > 0x01) {\n                    offset += packet[offset] + 1;\n                } // parse the rest of the packet based on the type\n\n                if (result.pid === 0) {\n                    result.type = 'pat';\n                    parsePsi(packet.subarray(offset), result);\n                    this.trigger('data', result);\n                } else if (result.pid === this.pmtPid) {\n                    result.type = 'pmt';\n                    parsePsi(packet.subarray(offset), result);\n                    this.trigger('data', result); // if there are any packets waiting for a PMT to be found, process them now\n\n                    while (this.packetsWaitingForPmt.length) {\n                        this.processPes_.apply(this, this.packetsWaitingForPmt.shift());\n                    }\n                } else if (this.programMapTable === undefined) {\n                    // When we have not seen a PMT yet, defer further processing of\n                    // PES packets until one has been parsed\n                    this.packetsWaitingForPmt.push([packet, offset, result]);\n                } else {\n                    this.processPes_(packet, offset, result);\n                }\n            };\n            this.processPes_ = function (packet, offset, result) {\n                // set the appropriate stream type\n                if (result.pid === this.programMapTable.video) {\n                    result.streamType = StreamTypes$2.H264_STREAM_TYPE;\n                } else if (result.pid === this.programMapTable.audio) {\n                    result.streamType = StreamTypes$2.ADTS_STREAM_TYPE;\n                } else {\n                    // if not video or audio, it is timed-metadata or unknown\n                    // if unknown, streamType will be undefined\n                    result.streamType = this.programMapTable['timed-metadata'][result.pid];\n                }\n                result.type = 'pes';\n                result.data = packet.subarray(offset);\n                this.trigger('data', result);\n            };\n        };\n        TransportParseStream.prototype = new Stream$4();\n        TransportParseStream.STREAM_TYPES = {\n            h264: 0x1b,\n            adts: 0x0f\n        };\n        /**\n         * Reconsistutes program elementary stream (PES) packets from parsed\n         * transport stream packets. That is, if you pipe an\n         * mp2t.TransportParseStream into a mp2t.ElementaryStream, the output\n         * events will be events which capture the bytes for individual PES\n         * packets plus relevant metadata that has been extracted from the\n         * container.\n         */\n\n        ElementaryStream = function () {\n            var self = this,\n                segmentHadPmt = false,\n                // PES packet fragments\n                video = {\n                    data: [],\n                    size: 0\n                },\n                audio = {\n                    data: [],\n                    size: 0\n                },\n                timedMetadata = {\n                    data: [],\n                    size: 0\n                },\n                programMapTable,\n                parsePes = function (payload, pes) {\n                    var ptsDtsFlags;\n                    const startPrefix = payload[0] << 16 | payload[1] << 8 | payload[2]; // default to an empty array\n\n                    pes.data = new Uint8Array(); // In certain live streams, the start of a TS fragment has ts packets\n                    // that are frame data that is continuing from the previous fragment. This\n                    // is to check that the pes data is the start of a new pes payload\n\n                    if (startPrefix !== 1) {\n                        return;\n                    } // get the packet length, this will be 0 for video\n\n                    pes.packetLength = 6 + (payload[4] << 8 | payload[5]); // find out if this packets starts a new keyframe\n\n                    pes.dataAlignmentIndicator = (payload[6] & 0x04) !== 0; // PES packets may be annotated with a PTS value, or a PTS value\n                    // and a DTS value. Determine what combination of values is\n                    // available to work with.\n\n                    ptsDtsFlags = payload[7]; // PTS and DTS are normally stored as a 33-bit number.  Javascript\n                    // performs all bitwise operations on 32-bit integers but javascript\n                    // supports a much greater range (52-bits) of integer using standard\n                    // mathematical operations.\n                    // We construct a 31-bit value using bitwise operators over the 31\n                    // most significant bits and then multiply by 4 (equal to a left-shift\n                    // of 2) before we add the final 2 least significant bits of the\n                    // timestamp (equal to an OR.)\n\n                    if (ptsDtsFlags & 0xC0) {\n                        // the PTS and DTS are not written out directly. For information\n                        // on how they are encoded, see\n                        // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html\n                        pes.pts = (payload[9] & 0x0E) << 27 | (payload[10] & 0xFF) << 20 | (payload[11] & 0xFE) << 12 | (payload[12] & 0xFF) << 5 | (payload[13] & 0xFE) >>> 3;\n                        pes.pts *= 4; // Left shift by 2\n\n                        pes.pts += (payload[13] & 0x06) >>> 1; // OR by the two LSBs\n\n                        pes.dts = pes.pts;\n                        if (ptsDtsFlags & 0x40) {\n                            pes.dts = (payload[14] & 0x0E) << 27 | (payload[15] & 0xFF) << 20 | (payload[16] & 0xFE) << 12 | (payload[17] & 0xFF) << 5 | (payload[18] & 0xFE) >>> 3;\n                            pes.dts *= 4; // Left shift by 2\n\n                            pes.dts += (payload[18] & 0x06) >>> 1; // OR by the two LSBs\n                        }\n                    } // the data section starts immediately after the PES header.\n                    // pes_header_data_length specifies the number of header bytes\n                    // that follow the last byte of the field.\n\n                    pes.data = payload.subarray(9 + payload[8]);\n                },\n                /**\n                 * Pass completely parsed PES packets to the next stream in the pipeline\n                 **/\n                flushStream = function (stream, type, forceFlush) {\n                    var packetData = new Uint8Array(stream.size),\n                        event = {\n                            type: type\n                        },\n                        i = 0,\n                        offset = 0,\n                        packetFlushable = false,\n                        fragment; // do nothing if there is not enough buffered data for a complete\n                    // PES header\n\n                    if (!stream.data.length || stream.size < 9) {\n                        return;\n                    }\n                    event.trackId = stream.data[0].pid; // reassemble the packet\n\n                    for (i = 0; i < stream.data.length; i++) {\n                        fragment = stream.data[i];\n                        packetData.set(fragment.data, offset);\n                        offset += fragment.data.byteLength;\n                    } // parse assembled packet's PES header\n\n                    parsePes(packetData, event); // non-video PES packets MUST have a non-zero PES_packet_length\n                    // check that there is enough stream data to fill the packet\n\n                    packetFlushable = type === 'video' || event.packetLength <= stream.size; // flush pending packets if the conditions are right\n\n                    if (forceFlush || packetFlushable) {\n                        stream.size = 0;\n                        stream.data.length = 0;\n                    } // only emit packets that are complete. this is to avoid assembling\n                    // incomplete PES packets due to poor segmentation\n\n                    if (packetFlushable) {\n                        self.trigger('data', event);\n                    }\n                };\n            ElementaryStream.prototype.init.call(this);\n            /**\n             * Identifies M2TS packet types and parses PES packets using metadata\n             * parsed from the PMT\n             **/\n\n            this.push = function (data) {\n                ({\n                    pat: function () {// we have to wait for the PMT to arrive as well before we\n                        // have any meaningful metadata\n                    },\n                    pes: function () {\n                        var stream, streamType;\n                        switch (data.streamType) {\n                            case StreamTypes$2.H264_STREAM_TYPE:\n                                stream = video;\n                                streamType = 'video';\n                                break;\n                            case StreamTypes$2.ADTS_STREAM_TYPE:\n                                stream = audio;\n                                streamType = 'audio';\n                                break;\n                            case StreamTypes$2.METADATA_STREAM_TYPE:\n                                stream = timedMetadata;\n                                streamType = 'timed-metadata';\n                                break;\n                            default:\n                                // ignore unknown stream types\n                                return;\n                        } // if a new packet is starting, we can flush the completed\n                        // packet\n\n                        if (data.payloadUnitStartIndicator) {\n                            flushStream(stream, streamType, true);\n                        } // buffer this fragment until we are sure we've received the\n                        // complete payload\n\n                        stream.data.push(data);\n                        stream.size += data.data.byteLength;\n                    },\n                    pmt: function () {\n                        var event = {\n                            type: 'metadata',\n                            tracks: []\n                        };\n                        programMapTable = data.programMapTable; // translate audio and video streams to tracks\n\n                        if (programMapTable.video !== null) {\n                            event.tracks.push({\n                                timelineStartInfo: {\n                                    baseMediaDecodeTime: 0\n                                },\n                                id: +programMapTable.video,\n                                codec: 'avc',\n                                type: 'video'\n                            });\n                        }\n                        if (programMapTable.audio !== null) {\n                            event.tracks.push({\n                                timelineStartInfo: {\n                                    baseMediaDecodeTime: 0\n                                },\n                                id: +programMapTable.audio,\n                                codec: 'adts',\n                                type: 'audio'\n                            });\n                        }\n                        segmentHadPmt = true;\n                        self.trigger('data', event);\n                    }\n                })[data.type]();\n            };\n            this.reset = function () {\n                video.size = 0;\n                video.data.length = 0;\n                audio.size = 0;\n                audio.data.length = 0;\n                this.trigger('reset');\n            };\n            /**\n             * Flush any remaining input. Video PES packets may be of variable\n             * length. Normally, the start of a new video packet can trigger the\n             * finalization of the previous packet. That is not possible if no\n             * more video is forthcoming, however. In that case, some other\n             * mechanism (like the end of the file) has to be employed. When it is\n             * clear that no additional data is forthcoming, calling this method\n             * will flush the buffered packets.\n             */\n\n            this.flushStreams_ = function () {\n                // !!THIS ORDER IS IMPORTANT!!\n                // video first then audio\n                flushStream(video, 'video');\n                flushStream(audio, 'audio');\n                flushStream(timedMetadata, 'timed-metadata');\n            };\n            this.flush = function () {\n                // if on flush we haven't had a pmt emitted\n                // and we have a pmt to emit. emit the pmt\n                // so that we trigger a trackinfo downstream.\n                if (!segmentHadPmt && programMapTable) {\n                    var pmt = {\n                        type: 'metadata',\n                        tracks: []\n                    }; // translate audio and video streams to tracks\n\n                    if (programMapTable.video !== null) {\n                        pmt.tracks.push({\n                            timelineStartInfo: {\n                                baseMediaDecodeTime: 0\n                            },\n                            id: +programMapTable.video,\n                            codec: 'avc',\n                            type: 'video'\n                        });\n                    }\n                    if (programMapTable.audio !== null) {\n                        pmt.tracks.push({\n                            timelineStartInfo: {\n                                baseMediaDecodeTime: 0\n                            },\n                            id: +programMapTable.audio,\n                            codec: 'adts',\n                            type: 'audio'\n                        });\n                    }\n                    self.trigger('data', pmt);\n                }\n                segmentHadPmt = false;\n                this.flushStreams_();\n                this.trigger('done');\n            };\n        };\n        ElementaryStream.prototype = new Stream$4();\n        var m2ts$1 = {\n            PAT_PID: 0x0000,\n            MP2T_PACKET_LENGTH: MP2T_PACKET_LENGTH$1,\n            TransportPacketStream: TransportPacketStream,\n            TransportParseStream: TransportParseStream,\n            ElementaryStream: ElementaryStream,\n            TimestampRolloverStream: TimestampRolloverStream,\n            CaptionStream: CaptionStream$1.CaptionStream,\n            Cea608Stream: CaptionStream$1.Cea608Stream,\n            Cea708Stream: CaptionStream$1.Cea708Stream,\n            MetadataStream: metadataStream\n        };\n        for (var type in StreamTypes$2) {\n            if (StreamTypes$2.hasOwnProperty(type)) {\n                m2ts$1[type] = StreamTypes$2[type];\n            }\n        }\n        var m2ts_1 = m2ts$1;\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n\n        var Stream$3 = stream;\n        var ONE_SECOND_IN_TS$2 = clock$2.ONE_SECOND_IN_TS;\n        var AdtsStream$1;\n        var ADTS_SAMPLING_FREQUENCIES$1 = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];\n        /*\n     * Accepts a ElementaryStream and emits data events with parsed\n     * AAC Audio Frames of the individual packets. Input audio in ADTS\n     * format is unpacked and re-emitted as AAC frames.\n     *\n     * @see http://wiki.multimedia.cx/index.php?title=ADTS\n     * @see http://wiki.multimedia.cx/?title=Understanding_AAC\n     */\n\n        AdtsStream$1 = function (handlePartialSegments) {\n            var buffer,\n                frameNum = 0;\n            AdtsStream$1.prototype.init.call(this);\n            this.skipWarn_ = function (start, end) {\n                this.trigger('log', {\n                    level: 'warn',\n                    message: `adts skiping bytes ${start} to ${end} in frame ${frameNum} outside syncword`\n                });\n            };\n            this.push = function (packet) {\n                var i = 0,\n                    frameLength,\n                    protectionSkipBytes,\n                    oldBuffer,\n                    sampleCount,\n                    adtsFrameDuration;\n                if (!handlePartialSegments) {\n                    frameNum = 0;\n                }\n                if (packet.type !== 'audio') {\n                    // ignore non-audio data\n                    return;\n                } // Prepend any data in the buffer to the input data so that we can parse\n                // aac frames the cross a PES packet boundary\n\n                if (buffer && buffer.length) {\n                    oldBuffer = buffer;\n                    buffer = new Uint8Array(oldBuffer.byteLength + packet.data.byteLength);\n                    buffer.set(oldBuffer);\n                    buffer.set(packet.data, oldBuffer.byteLength);\n                } else {\n                    buffer = packet.data;\n                } // unpack any ADTS frames which have been fully received\n                // for details on the ADTS header, see http://wiki.multimedia.cx/index.php?title=ADTS\n\n                var skip; // We use i + 7 here because we want to be able to parse the entire header.\n                // If we don't have enough bytes to do that, then we definitely won't have a full frame.\n\n                while (i + 7 < buffer.length) {\n                    // Look for the start of an ADTS header..\n                    if (buffer[i] !== 0xFF || (buffer[i + 1] & 0xF6) !== 0xF0) {\n                        if (typeof skip !== 'number') {\n                            skip = i;\n                        } // If a valid header was not found,  jump one forward and attempt to\n                        // find a valid ADTS header starting at the next byte\n\n                        i++;\n                        continue;\n                    }\n                    if (typeof skip === 'number') {\n                        this.skipWarn_(skip, i);\n                        skip = null;\n                    } // The protection skip bit tells us if we have 2 bytes of CRC data at the\n                    // end of the ADTS header\n\n                    protectionSkipBytes = (~buffer[i + 1] & 0x01) * 2; // Frame length is a 13 bit integer starting 16 bits from the\n                    // end of the sync sequence\n                    // NOTE: frame length includes the size of the header\n\n                    frameLength = (buffer[i + 3] & 0x03) << 11 | buffer[i + 4] << 3 | (buffer[i + 5] & 0xe0) >> 5;\n                    sampleCount = ((buffer[i + 6] & 0x03) + 1) * 1024;\n                    adtsFrameDuration = sampleCount * ONE_SECOND_IN_TS$2 / ADTS_SAMPLING_FREQUENCIES$1[(buffer[i + 2] & 0x3c) >>> 2]; // If we don't have enough data to actually finish this ADTS frame,\n                    // then we have to wait for more data\n\n                    if (buffer.byteLength - i < frameLength) {\n                        break;\n                    } // Otherwise, deliver the complete AAC frame\n\n                    this.trigger('data', {\n                        pts: packet.pts + frameNum * adtsFrameDuration,\n                        dts: packet.dts + frameNum * adtsFrameDuration,\n                        sampleCount: sampleCount,\n                        audioobjecttype: (buffer[i + 2] >>> 6 & 0x03) + 1,\n                        channelcount: (buffer[i + 2] & 1) << 2 | (buffer[i + 3] & 0xc0) >>> 6,\n                        samplerate: ADTS_SAMPLING_FREQUENCIES$1[(buffer[i + 2] & 0x3c) >>> 2],\n                        samplingfrequencyindex: (buffer[i + 2] & 0x3c) >>> 2,\n                        // assume ISO/IEC 14496-12 AudioSampleEntry default of 16\n                        samplesize: 16,\n                        // data is the frame without it's header\n                        data: buffer.subarray(i + 7 + protectionSkipBytes, i + frameLength)\n                    });\n                    frameNum++;\n                    i += frameLength;\n                }\n                if (typeof skip === 'number') {\n                    this.skipWarn_(skip, i);\n                    skip = null;\n                } // remove processed bytes from the buffer.\n\n                buffer = buffer.subarray(i);\n            };\n            this.flush = function () {\n                frameNum = 0;\n                this.trigger('done');\n            };\n            this.reset = function () {\n                buffer = void 0;\n                this.trigger('reset');\n            };\n            this.endTimeline = function () {\n                buffer = void 0;\n                this.trigger('endedtimeline');\n            };\n        };\n        AdtsStream$1.prototype = new Stream$3();\n        var adts = AdtsStream$1;\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n\n        var ExpGolomb$1;\n        /**\n         * Parser for exponential Golomb codes, a variable-bitwidth number encoding\n         * scheme used by h264.\n         */\n\n        ExpGolomb$1 = function (workingData) {\n            var\n                // the number of bytes left to examine in workingData\n                workingBytesAvailable = workingData.byteLength,\n                // the current word being examined\n                workingWord = 0,\n                // :uint\n                // the number of bits left to examine in the current word\n                workingBitsAvailable = 0; // :uint;\n            // ():uint\n\n            this.length = function () {\n                return 8 * workingBytesAvailable;\n            }; // ():uint\n\n            this.bitsAvailable = function () {\n                return 8 * workingBytesAvailable + workingBitsAvailable;\n            }; // ():void\n\n            this.loadWord = function () {\n                var position = workingData.byteLength - workingBytesAvailable,\n                    workingBytes = new Uint8Array(4),\n                    availableBytes = Math.min(4, workingBytesAvailable);\n                if (availableBytes === 0) {\n                    throw new Error('no bytes available');\n                }\n                workingBytes.set(workingData.subarray(position, position + availableBytes));\n                workingWord = new DataView(workingBytes.buffer).getUint32(0); // track the amount of workingData that has been processed\n\n                workingBitsAvailable = availableBytes * 8;\n                workingBytesAvailable -= availableBytes;\n            }; // (count:int):void\n\n            this.skipBits = function (count) {\n                var skipBytes; // :int\n\n                if (workingBitsAvailable > count) {\n                    workingWord <<= count;\n                    workingBitsAvailable -= count;\n                } else {\n                    count -= workingBitsAvailable;\n                    skipBytes = Math.floor(count / 8);\n                    count -= skipBytes * 8;\n                    workingBytesAvailable -= skipBytes;\n                    this.loadWord();\n                    workingWord <<= count;\n                    workingBitsAvailable -= count;\n                }\n            }; // (size:int):uint\n\n            this.readBits = function (size) {\n                var bits = Math.min(workingBitsAvailable, size),\n                    // :uint\n                    valu = workingWord >>> 32 - bits; // :uint\n                // if size > 31, handle error\n\n                workingBitsAvailable -= bits;\n                if (workingBitsAvailable > 0) {\n                    workingWord <<= bits;\n                } else if (workingBytesAvailable > 0) {\n                    this.loadWord();\n                }\n                bits = size - bits;\n                if (bits > 0) {\n                    return valu << bits | this.readBits(bits);\n                }\n                return valu;\n            }; // ():uint\n\n            this.skipLeadingZeros = function () {\n                var leadingZeroCount; // :uint\n\n                for (leadingZeroCount = 0; leadingZeroCount < workingBitsAvailable; ++leadingZeroCount) {\n                    if ((workingWord & 0x80000000 >>> leadingZeroCount) !== 0) {\n                        // the first bit of working word is 1\n                        workingWord <<= leadingZeroCount;\n                        workingBitsAvailable -= leadingZeroCount;\n                        return leadingZeroCount;\n                    }\n                } // we exhausted workingWord and still have not found a 1\n\n                this.loadWord();\n                return leadingZeroCount + this.skipLeadingZeros();\n            }; // ():void\n\n            this.skipUnsignedExpGolomb = function () {\n                this.skipBits(1 + this.skipLeadingZeros());\n            }; // ():void\n\n            this.skipExpGolomb = function () {\n                this.skipBits(1 + this.skipLeadingZeros());\n            }; // ():uint\n\n            this.readUnsignedExpGolomb = function () {\n                var clz = this.skipLeadingZeros(); // :uint\n\n                return this.readBits(clz + 1) - 1;\n            }; // ():int\n\n            this.readExpGolomb = function () {\n                var valu = this.readUnsignedExpGolomb(); // :int\n\n                if (0x01 & valu) {\n                    // the number is odd if the low order bit is set\n                    return 1 + valu >>> 1; // add 1 to make it even, and divide by 2\n                }\n\n                return -1 * (valu >>> 1); // divide by two then make it negative\n            }; // Some convenience functions\n            // :Boolean\n\n            this.readBoolean = function () {\n                return this.readBits(1) === 1;\n            }; // ():int\n\n            this.readUnsignedByte = function () {\n                return this.readBits(8);\n            };\n            this.loadWord();\n        };\n        var expGolomb = ExpGolomb$1;\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n\n        var Stream$2 = stream;\n        var ExpGolomb = expGolomb;\n        var H264Stream$1, NalByteStream;\n        var PROFILES_WITH_OPTIONAL_SPS_DATA;\n        /**\n         * Accepts a NAL unit byte stream and unpacks the embedded NAL units.\n         */\n\n        NalByteStream = function () {\n            var syncPoint = 0,\n                i,\n                buffer;\n            NalByteStream.prototype.init.call(this);\n            /*\n       * Scans a byte stream and triggers a data event with the NAL units found.\n       * @param {Object} data Event received from H264Stream\n       * @param {Uint8Array} data.data The h264 byte stream to be scanned\n       *\n       * @see H264Stream.push\n       */\n\n            this.push = function (data) {\n                var swapBuffer;\n                if (!buffer) {\n                    buffer = data.data;\n                } else {\n                    swapBuffer = new Uint8Array(buffer.byteLength + data.data.byteLength);\n                    swapBuffer.set(buffer);\n                    swapBuffer.set(data.data, buffer.byteLength);\n                    buffer = swapBuffer;\n                }\n                var len = buffer.byteLength; // Rec. ITU-T H.264, Annex B\n                // scan for NAL unit boundaries\n                // a match looks like this:\n                // 0 0 1 .. NAL .. 0 0 1\n                // ^ sync point        ^ i\n                // or this:\n                // 0 0 1 .. NAL .. 0 0 0\n                // ^ sync point        ^ i\n                // advance the sync point to a NAL start, if necessary\n\n                for (; syncPoint < len - 3; syncPoint++) {\n                    if (buffer[syncPoint + 2] === 1) {\n                        // the sync point is properly aligned\n                        i = syncPoint + 5;\n                        break;\n                    }\n                }\n                while (i < len) {\n                    // look at the current byte to determine if we've hit the end of\n                    // a NAL unit boundary\n                    switch (buffer[i]) {\n                        case 0:\n                            // skip past non-sync sequences\n                            if (buffer[i - 1] !== 0) {\n                                i += 2;\n                                break;\n                            } else if (buffer[i - 2] !== 0) {\n                                i++;\n                                break;\n                            } // deliver the NAL unit if it isn't empty\n\n                            if (syncPoint + 3 !== i - 2) {\n                                this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));\n                            } // drop trailing zeroes\n\n                            do {\n                                i++;\n                            } while (buffer[i] !== 1 && i < len);\n                            syncPoint = i - 2;\n                            i += 3;\n                            break;\n                        case 1:\n                            // skip past non-sync sequences\n                            if (buffer[i - 1] !== 0 || buffer[i - 2] !== 0) {\n                                i += 3;\n                                break;\n                            } // deliver the NAL unit\n\n                            this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));\n                            syncPoint = i - 2;\n                            i += 3;\n                            break;\n                        default:\n                            // the current byte isn't a one or zero, so it cannot be part\n                            // of a sync sequence\n                            i += 3;\n                            break;\n                    }\n                } // filter out the NAL units that were delivered\n\n                buffer = buffer.subarray(syncPoint);\n                i -= syncPoint;\n                syncPoint = 0;\n            };\n            this.reset = function () {\n                buffer = null;\n                syncPoint = 0;\n                this.trigger('reset');\n            };\n            this.flush = function () {\n                // deliver the last buffered NAL unit\n                if (buffer && buffer.byteLength > 3) {\n                    this.trigger('data', buffer.subarray(syncPoint + 3));\n                } // reset the stream state\n\n                buffer = null;\n                syncPoint = 0;\n                this.trigger('done');\n            };\n            this.endTimeline = function () {\n                this.flush();\n                this.trigger('endedtimeline');\n            };\n        };\n        NalByteStream.prototype = new Stream$2(); // values of profile_idc that indicate additional fields are included in the SPS\n        // see Recommendation ITU-T H.264 (4/2013),\n        // 7.3.2.1.1 Sequence parameter set data syntax\n\n        PROFILES_WITH_OPTIONAL_SPS_DATA = {\n            100: true,\n            110: true,\n            122: true,\n            244: true,\n            44: true,\n            83: true,\n            86: true,\n            118: true,\n            128: true,\n            // TODO: the three profiles below don't\n            // appear to have sps data in the specificiation anymore?\n            138: true,\n            139: true,\n            134: true\n        };\n        /**\n         * Accepts input from a ElementaryStream and produces H.264 NAL unit data\n         * events.\n         */\n\n        H264Stream$1 = function () {\n            var nalByteStream = new NalByteStream(),\n                self,\n                trackId,\n                currentPts,\n                currentDts,\n                discardEmulationPreventionBytes,\n                readSequenceParameterSet,\n                skipScalingList;\n            H264Stream$1.prototype.init.call(this);\n            self = this;\n            /*\n       * Pushes a packet from a stream onto the NalByteStream\n       *\n       * @param {Object} packet - A packet received from a stream\n       * @param {Uint8Array} packet.data - The raw bytes of the packet\n       * @param {Number} packet.dts - Decode timestamp of the packet\n       * @param {Number} packet.pts - Presentation timestamp of the packet\n       * @param {Number} packet.trackId - The id of the h264 track this packet came from\n       * @param {('video'|'audio')} packet.type - The type of packet\n       *\n       */\n\n            this.push = function (packet) {\n                if (packet.type !== 'video') {\n                    return;\n                }\n                trackId = packet.trackId;\n                currentPts = packet.pts;\n                currentDts = packet.dts;\n                nalByteStream.push(packet);\n            };\n            /*\n       * Identify NAL unit types and pass on the NALU, trackId, presentation and decode timestamps\n       * for the NALUs to the next stream component.\n       * Also, preprocess caption and sequence parameter NALUs.\n       *\n       * @param {Uint8Array} data - A NAL unit identified by `NalByteStream.push`\n       * @see NalByteStream.push\n       */\n\n            nalByteStream.on('data', function (data) {\n                var event = {\n                    trackId: trackId,\n                    pts: currentPts,\n                    dts: currentDts,\n                    data: data,\n                    nalUnitTypeCode: data[0] & 0x1f\n                };\n                switch (event.nalUnitTypeCode) {\n                    case 0x05:\n                        event.nalUnitType = 'slice_layer_without_partitioning_rbsp_idr';\n                        break;\n                    case 0x06:\n                        event.nalUnitType = 'sei_rbsp';\n                        event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));\n                        break;\n                    case 0x07:\n                        event.nalUnitType = 'seq_parameter_set_rbsp';\n                        event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));\n                        event.config = readSequenceParameterSet(event.escapedRBSP);\n                        break;\n                    case 0x08:\n                        event.nalUnitType = 'pic_parameter_set_rbsp';\n                        break;\n                    case 0x09:\n                        event.nalUnitType = 'access_unit_delimiter_rbsp';\n                        break;\n                } // This triggers data on the H264Stream\n\n                self.trigger('data', event);\n            });\n            nalByteStream.on('done', function () {\n                self.trigger('done');\n            });\n            nalByteStream.on('partialdone', function () {\n                self.trigger('partialdone');\n            });\n            nalByteStream.on('reset', function () {\n                self.trigger('reset');\n            });\n            nalByteStream.on('endedtimeline', function () {\n                self.trigger('endedtimeline');\n            });\n            this.flush = function () {\n                nalByteStream.flush();\n            };\n            this.partialFlush = function () {\n                nalByteStream.partialFlush();\n            };\n            this.reset = function () {\n                nalByteStream.reset();\n            };\n            this.endTimeline = function () {\n                nalByteStream.endTimeline();\n            };\n            /**\n             * Advance the ExpGolomb decoder past a scaling list. The scaling\n             * list is optionally transmitted as part of a sequence parameter\n             * set and is not relevant to transmuxing.\n             * @param count {number} the number of entries in this scaling list\n             * @param expGolombDecoder {object} an ExpGolomb pointed to the\n             * start of a scaling list\n             * @see Recommendation ITU-T H.264, Section 7.3.2.1.1.1\n             */\n\n            skipScalingList = function (count, expGolombDecoder) {\n                var lastScale = 8,\n                    nextScale = 8,\n                    j,\n                    deltaScale;\n                for (j = 0; j < count; j++) {\n                    if (nextScale !== 0) {\n                        deltaScale = expGolombDecoder.readExpGolomb();\n                        nextScale = (lastScale + deltaScale + 256) % 256;\n                    }\n                    lastScale = nextScale === 0 ? lastScale : nextScale;\n                }\n            };\n            /**\n             * Expunge any \"Emulation Prevention\" bytes from a \"Raw Byte\n             * Sequence Payload\"\n             * @param data {Uint8Array} the bytes of a RBSP from a NAL\n             * unit\n             * @return {Uint8Array} the RBSP without any Emulation\n             * Prevention Bytes\n             */\n\n            discardEmulationPreventionBytes = function (data) {\n                var length = data.byteLength,\n                    emulationPreventionBytesPositions = [],\n                    i = 1,\n                    newLength,\n                    newData; // Find all `Emulation Prevention Bytes`\n\n                while (i < length - 2) {\n                    if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {\n                        emulationPreventionBytesPositions.push(i + 2);\n                        i += 2;\n                    } else {\n                        i++;\n                    }\n                } // If no Emulation Prevention Bytes were found just return the original\n                // array\n\n                if (emulationPreventionBytesPositions.length === 0) {\n                    return data;\n                } // Create a new array to hold the NAL unit data\n\n                newLength = length - emulationPreventionBytesPositions.length;\n                newData = new Uint8Array(newLength);\n                var sourceIndex = 0;\n                for (i = 0; i < newLength; sourceIndex++, i++) {\n                    if (sourceIndex === emulationPreventionBytesPositions[0]) {\n                        // Skip this byte\n                        sourceIndex++; // Remove this position index\n\n                        emulationPreventionBytesPositions.shift();\n                    }\n                    newData[i] = data[sourceIndex];\n                }\n                return newData;\n            };\n            /**\n             * Read a sequence parameter set and return some interesting video\n             * properties. A sequence parameter set is the H264 metadata that\n             * describes the properties of upcoming video frames.\n             * @param data {Uint8Array} the bytes of a sequence parameter set\n             * @return {object} an object with configuration parsed from the\n             * sequence parameter set, including the dimensions of the\n             * associated video frames.\n             */\n\n            readSequenceParameterSet = function (data) {\n                var frameCropLeftOffset = 0,\n                    frameCropRightOffset = 0,\n                    frameCropTopOffset = 0,\n                    frameCropBottomOffset = 0,\n                    expGolombDecoder,\n                    profileIdc,\n                    levelIdc,\n                    profileCompatibility,\n                    chromaFormatIdc,\n                    picOrderCntType,\n                    numRefFramesInPicOrderCntCycle,\n                    picWidthInMbsMinus1,\n                    picHeightInMapUnitsMinus1,\n                    frameMbsOnlyFlag,\n                    scalingListCount,\n                    sarRatio = [1, 1],\n                    aspectRatioIdc,\n                    i;\n                expGolombDecoder = new ExpGolomb(data);\n                profileIdc = expGolombDecoder.readUnsignedByte(); // profile_idc\n\n                profileCompatibility = expGolombDecoder.readUnsignedByte(); // constraint_set[0-5]_flag\n\n                levelIdc = expGolombDecoder.readUnsignedByte(); // level_idc u(8)\n\n                expGolombDecoder.skipUnsignedExpGolomb(); // seq_parameter_set_id\n                // some profiles have more optional data we don't need\n\n                if (PROFILES_WITH_OPTIONAL_SPS_DATA[profileIdc]) {\n                    chromaFormatIdc = expGolombDecoder.readUnsignedExpGolomb();\n                    if (chromaFormatIdc === 3) {\n                        expGolombDecoder.skipBits(1); // separate_colour_plane_flag\n                    }\n\n                    expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_luma_minus8\n\n                    expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_chroma_minus8\n\n                    expGolombDecoder.skipBits(1); // qpprime_y_zero_transform_bypass_flag\n\n                    if (expGolombDecoder.readBoolean()) {\n                        // seq_scaling_matrix_present_flag\n                        scalingListCount = chromaFormatIdc !== 3 ? 8 : 12;\n                        for (i = 0; i < scalingListCount; i++) {\n                            if (expGolombDecoder.readBoolean()) {\n                                // seq_scaling_list_present_flag[ i ]\n                                if (i < 6) {\n                                    skipScalingList(16, expGolombDecoder);\n                                } else {\n                                    skipScalingList(64, expGolombDecoder);\n                                }\n                            }\n                        }\n                    }\n                }\n                expGolombDecoder.skipUnsignedExpGolomb(); // log2_max_frame_num_minus4\n\n                picOrderCntType = expGolombDecoder.readUnsignedExpGolomb();\n                if (picOrderCntType === 0) {\n                    expGolombDecoder.readUnsignedExpGolomb(); // log2_max_pic_order_cnt_lsb_minus4\n                } else if (picOrderCntType === 1) {\n                    expGolombDecoder.skipBits(1); // delta_pic_order_always_zero_flag\n\n                    expGolombDecoder.skipExpGolomb(); // offset_for_non_ref_pic\n\n                    expGolombDecoder.skipExpGolomb(); // offset_for_top_to_bottom_field\n\n                    numRefFramesInPicOrderCntCycle = expGolombDecoder.readUnsignedExpGolomb();\n                    for (i = 0; i < numRefFramesInPicOrderCntCycle; i++) {\n                        expGolombDecoder.skipExpGolomb(); // offset_for_ref_frame[ i ]\n                    }\n                }\n\n                expGolombDecoder.skipUnsignedExpGolomb(); // max_num_ref_frames\n\n                expGolombDecoder.skipBits(1); // gaps_in_frame_num_value_allowed_flag\n\n                picWidthInMbsMinus1 = expGolombDecoder.readUnsignedExpGolomb();\n                picHeightInMapUnitsMinus1 = expGolombDecoder.readUnsignedExpGolomb();\n                frameMbsOnlyFlag = expGolombDecoder.readBits(1);\n                if (frameMbsOnlyFlag === 0) {\n                    expGolombDecoder.skipBits(1); // mb_adaptive_frame_field_flag\n                }\n\n                expGolombDecoder.skipBits(1); // direct_8x8_inference_flag\n\n                if (expGolombDecoder.readBoolean()) {\n                    // frame_cropping_flag\n                    frameCropLeftOffset = expGolombDecoder.readUnsignedExpGolomb();\n                    frameCropRightOffset = expGolombDecoder.readUnsignedExpGolomb();\n                    frameCropTopOffset = expGolombDecoder.readUnsignedExpGolomb();\n                    frameCropBottomOffset = expGolombDecoder.readUnsignedExpGolomb();\n                }\n                if (expGolombDecoder.readBoolean()) {\n                    // vui_parameters_present_flag\n                    if (expGolombDecoder.readBoolean()) {\n                        // aspect_ratio_info_present_flag\n                        aspectRatioIdc = expGolombDecoder.readUnsignedByte();\n                        switch (aspectRatioIdc) {\n                            case 1:\n                                sarRatio = [1, 1];\n                                break;\n                            case 2:\n                                sarRatio = [12, 11];\n                                break;\n                            case 3:\n                                sarRatio = [10, 11];\n                                break;\n                            case 4:\n                                sarRatio = [16, 11];\n                                break;\n                            case 5:\n                                sarRatio = [40, 33];\n                                break;\n                            case 6:\n                                sarRatio = [24, 11];\n                                break;\n                            case 7:\n                                sarRatio = [20, 11];\n                                break;\n                            case 8:\n                                sarRatio = [32, 11];\n                                break;\n                            case 9:\n                                sarRatio = [80, 33];\n                                break;\n                            case 10:\n                                sarRatio = [18, 11];\n                                break;\n                            case 11:\n                                sarRatio = [15, 11];\n                                break;\n                            case 12:\n                                sarRatio = [64, 33];\n                                break;\n                            case 13:\n                                sarRatio = [160, 99];\n                                break;\n                            case 14:\n                                sarRatio = [4, 3];\n                                break;\n                            case 15:\n                                sarRatio = [3, 2];\n                                break;\n                            case 16:\n                                sarRatio = [2, 1];\n                                break;\n                            case 255:\n                            {\n                                sarRatio = [expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte(), expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte()];\n                                break;\n                            }\n                        }\n                        if (sarRatio) {\n                            sarRatio[0] / sarRatio[1];\n                        }\n                    }\n                }\n                return {\n                    profileIdc: profileIdc,\n                    levelIdc: levelIdc,\n                    profileCompatibility: profileCompatibility,\n                    width: (picWidthInMbsMinus1 + 1) * 16 - frameCropLeftOffset * 2 - frameCropRightOffset * 2,\n                    height: (2 - frameMbsOnlyFlag) * (picHeightInMapUnitsMinus1 + 1) * 16 - frameCropTopOffset * 2 - frameCropBottomOffset * 2,\n                    // sar is sample aspect ratio\n                    sarRatio: sarRatio\n                };\n            };\n        };\n        H264Stream$1.prototype = new Stream$2();\n        var h264 = {\n            H264Stream: H264Stream$1,\n            NalByteStream: NalByteStream\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Utilities to detect basic properties and metadata about Aac data.\n         */\n\n        var ADTS_SAMPLING_FREQUENCIES = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];\n        var parseId3TagSize = function (header, byteIndex) {\n            var returnSize = header[byteIndex + 6] << 21 | header[byteIndex + 7] << 14 | header[byteIndex + 8] << 7 | header[byteIndex + 9],\n                flags = header[byteIndex + 5],\n                footerPresent = (flags & 16) >> 4; // if we get a negative returnSize clamp it to 0\n\n            returnSize = returnSize >= 0 ? returnSize : 0;\n            if (footerPresent) {\n                return returnSize + 20;\n            }\n            return returnSize + 10;\n        };\n        var getId3Offset = function (data, offset) {\n            if (data.length - offset < 10 || data[offset] !== 'I'.charCodeAt(0) || data[offset + 1] !== 'D'.charCodeAt(0) || data[offset + 2] !== '3'.charCodeAt(0)) {\n                return offset;\n            }\n            offset += parseId3TagSize(data, offset);\n            return getId3Offset(data, offset);\n        }; // TODO: use vhs-utils\n\n        var isLikelyAacData$1 = function (data) {\n            var offset = getId3Offset(data, 0);\n            return data.length >= offset + 2 && (data[offset] & 0xFF) === 0xFF && (data[offset + 1] & 0xF0) === 0xF0 &&\n                // verify that the 2 layer bits are 0, aka this\n                // is not mp3 data but aac data.\n                (data[offset + 1] & 0x16) === 0x10;\n        };\n        var parseSyncSafeInteger = function (data) {\n            return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3];\n        }; // return a percent-encoded representation of the specified byte range\n        // @see http://en.wikipedia.org/wiki/Percent-encoding\n\n        var percentEncode = function (bytes, start, end) {\n            var i,\n                result = '';\n            for (i = start; i < end; i++) {\n                result += '%' + ('00' + bytes[i].toString(16)).slice(-2);\n            }\n            return result;\n        }; // return the string representation of the specified byte range,\n        // interpreted as ISO-8859-1.\n\n        var parseIso88591 = function (bytes, start, end) {\n            return unescape(percentEncode(bytes, start, end)); // jshint ignore:line\n        };\n\n        var parseAdtsSize = function (header, byteIndex) {\n            var lowThree = (header[byteIndex + 5] & 0xE0) >> 5,\n                middle = header[byteIndex + 4] << 3,\n                highTwo = header[byteIndex + 3] & 0x3 << 11;\n            return highTwo | middle | lowThree;\n        };\n        var parseType$4 = function (header, byteIndex) {\n            if (header[byteIndex] === 'I'.charCodeAt(0) && header[byteIndex + 1] === 'D'.charCodeAt(0) && header[byteIndex + 2] === '3'.charCodeAt(0)) {\n                return 'timed-metadata';\n            } else if (header[byteIndex] & 0xff === 0xff && (header[byteIndex + 1] & 0xf0) === 0xf0) {\n                return 'audio';\n            }\n            return null;\n        };\n        var parseSampleRate = function (packet) {\n            var i = 0;\n            while (i + 5 < packet.length) {\n                if (packet[i] !== 0xFF || (packet[i + 1] & 0xF6) !== 0xF0) {\n                    // If a valid header was not found,  jump one forward and attempt to\n                    // find a valid ADTS header starting at the next byte\n                    i++;\n                    continue;\n                }\n                return ADTS_SAMPLING_FREQUENCIES[(packet[i + 2] & 0x3c) >>> 2];\n            }\n            return null;\n        };\n        var parseAacTimestamp = function (packet) {\n            var frameStart, frameSize, frame, frameHeader; // find the start of the first frame and the end of the tag\n\n            frameStart = 10;\n            if (packet[5] & 0x40) {\n                // advance the frame start past the extended header\n                frameStart += 4; // header size field\n\n                frameStart += parseSyncSafeInteger(packet.subarray(10, 14));\n            } // parse one or more ID3 frames\n            // http://id3.org/id3v2.3.0#ID3v2_frame_overview\n\n            do {\n                // determine the number of bytes in this frame\n                frameSize = parseSyncSafeInteger(packet.subarray(frameStart + 4, frameStart + 8));\n                if (frameSize < 1) {\n                    return null;\n                }\n                frameHeader = String.fromCharCode(packet[frameStart], packet[frameStart + 1], packet[frameStart + 2], packet[frameStart + 3]);\n                if (frameHeader === 'PRIV') {\n                    frame = packet.subarray(frameStart + 10, frameStart + frameSize + 10);\n                    for (var i = 0; i < frame.byteLength; i++) {\n                        if (frame[i] === 0) {\n                            var owner = parseIso88591(frame, 0, i);\n                            if (owner === 'com.apple.streaming.transportStreamTimestamp') {\n                                var d = frame.subarray(i + 1);\n                                var size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2;\n                                size *= 4;\n                                size += d[7] & 0x03;\n                                return size;\n                            }\n                            break;\n                        }\n                    }\n                }\n                frameStart += 10; // advance past the frame header\n\n                frameStart += frameSize; // advance past the frame body\n            } while (frameStart < packet.byteLength);\n            return null;\n        };\n        var utils = {\n            isLikelyAacData: isLikelyAacData$1,\n            parseId3TagSize: parseId3TagSize,\n            parseAdtsSize: parseAdtsSize,\n            parseType: parseType$4,\n            parseSampleRate: parseSampleRate,\n            parseAacTimestamp: parseAacTimestamp\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * A stream-based aac to mp4 converter. This utility can be used to\n         * deliver mp4s to a SourceBuffer on platforms that support native\n         * Media Source Extensions.\n         */\n\n        var Stream$1 = stream;\n        var aacUtils = utils; // Constants\n\n        var AacStream$1;\n        /**\n         * Splits an incoming stream of binary data into ADTS and ID3 Frames.\n         */\n\n        AacStream$1 = function () {\n            var everything = new Uint8Array(),\n                timeStamp = 0;\n            AacStream$1.prototype.init.call(this);\n            this.setTimestamp = function (timestamp) {\n                timeStamp = timestamp;\n            };\n            this.push = function (bytes) {\n                var frameSize = 0,\n                    byteIndex = 0,\n                    bytesLeft,\n                    chunk,\n                    packet,\n                    tempLength; // If there are bytes remaining from the last segment, prepend them to the\n                // bytes that were pushed in\n\n                if (everything.length) {\n                    tempLength = everything.length;\n                    everything = new Uint8Array(bytes.byteLength + tempLength);\n                    everything.set(everything.subarray(0, tempLength));\n                    everything.set(bytes, tempLength);\n                } else {\n                    everything = bytes;\n                }\n                while (everything.length - byteIndex >= 3) {\n                    if (everything[byteIndex] === 'I'.charCodeAt(0) && everything[byteIndex + 1] === 'D'.charCodeAt(0) && everything[byteIndex + 2] === '3'.charCodeAt(0)) {\n                        // Exit early because we don't have enough to parse\n                        // the ID3 tag header\n                        if (everything.length - byteIndex < 10) {\n                            break;\n                        } // check framesize\n\n                        frameSize = aacUtils.parseId3TagSize(everything, byteIndex); // Exit early if we don't have enough in the buffer\n                        // to emit a full packet\n                        // Add to byteIndex to support multiple ID3 tags in sequence\n\n                        if (byteIndex + frameSize > everything.length) {\n                            break;\n                        }\n                        chunk = {\n                            type: 'timed-metadata',\n                            data: everything.subarray(byteIndex, byteIndex + frameSize)\n                        };\n                        this.trigger('data', chunk);\n                        byteIndex += frameSize;\n                        continue;\n                    } else if ((everything[byteIndex] & 0xff) === 0xff && (everything[byteIndex + 1] & 0xf0) === 0xf0) {\n                        // Exit early because we don't have enough to parse\n                        // the ADTS frame header\n                        if (everything.length - byteIndex < 7) {\n                            break;\n                        }\n                        frameSize = aacUtils.parseAdtsSize(everything, byteIndex); // Exit early if we don't have enough in the buffer\n                        // to emit a full packet\n\n                        if (byteIndex + frameSize > everything.length) {\n                            break;\n                        }\n                        packet = {\n                            type: 'audio',\n                            data: everything.subarray(byteIndex, byteIndex + frameSize),\n                            pts: timeStamp,\n                            dts: timeStamp\n                        };\n                        this.trigger('data', packet);\n                        byteIndex += frameSize;\n                        continue;\n                    }\n                    byteIndex++;\n                }\n                bytesLeft = everything.length - byteIndex;\n                if (bytesLeft > 0) {\n                    everything = everything.subarray(byteIndex);\n                } else {\n                    everything = new Uint8Array();\n                }\n            };\n            this.reset = function () {\n                everything = new Uint8Array();\n                this.trigger('reset');\n            };\n            this.endTimeline = function () {\n                everything = new Uint8Array();\n                this.trigger('endedtimeline');\n            };\n        };\n        AacStream$1.prototype = new Stream$1();\n        var aac = AacStream$1;\n        var AUDIO_PROPERTIES$1 = ['audioobjecttype', 'channelcount', 'samplerate', 'samplingfrequencyindex', 'samplesize'];\n        var audioProperties = AUDIO_PROPERTIES$1;\n        var VIDEO_PROPERTIES$1 = ['width', 'height', 'profileIdc', 'levelIdc', 'profileCompatibility', 'sarRatio'];\n        var videoProperties = VIDEO_PROPERTIES$1;\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * A stream-based mp2t to mp4 converter. This utility can be used to\n         * deliver mp4s to a SourceBuffer on platforms that support native\n         * Media Source Extensions.\n         */\n\n        var Stream = stream;\n        var mp4 = mp4Generator;\n        var frameUtils = frameUtils$1;\n        var audioFrameUtils = audioFrameUtils$1;\n        var trackDecodeInfo = trackDecodeInfo$1;\n        var m2ts = m2ts_1;\n        var clock = clock$2;\n        var AdtsStream = adts;\n        var H264Stream = h264.H264Stream;\n        var AacStream = aac;\n        var isLikelyAacData = utils.isLikelyAacData;\n        var ONE_SECOND_IN_TS$1 = clock$2.ONE_SECOND_IN_TS;\n        var AUDIO_PROPERTIES = audioProperties;\n        var VIDEO_PROPERTIES = videoProperties; // object types\n\n        var VideoSegmentStream, AudioSegmentStream, Transmuxer, CoalesceStream;\n        var retriggerForStream = function (key, event) {\n            event.stream = key;\n            this.trigger('log', event);\n        };\n        var addPipelineLogRetriggers = function (transmuxer, pipeline) {\n            var keys = Object.keys(pipeline);\n            for (var i = 0; i < keys.length; i++) {\n                var key = keys[i]; // skip non-stream keys and headOfPipeline\n                // which is just a duplicate\n\n                if (key === 'headOfPipeline' || !pipeline[key].on) {\n                    continue;\n                }\n                pipeline[key].on('log', retriggerForStream.bind(transmuxer, key));\n            }\n        };\n        /**\n         * Compare two arrays (even typed) for same-ness\n         */\n\n        var arrayEquals = function (a, b) {\n            var i;\n            if (a.length !== b.length) {\n                return false;\n            } // compare the value of each element in the array\n\n            for (i = 0; i < a.length; i++) {\n                if (a[i] !== b[i]) {\n                    return false;\n                }\n            }\n            return true;\n        };\n        var generateSegmentTimingInfo = function (baseMediaDecodeTime, startDts, startPts, endDts, endPts, prependedContentDuration) {\n            var ptsOffsetFromDts = startPts - startDts,\n                decodeDuration = endDts - startDts,\n                presentationDuration = endPts - startPts; // The PTS and DTS values are based on the actual stream times from the segment,\n            // however, the player time values will reflect a start from the baseMediaDecodeTime.\n            // In order to provide relevant values for the player times, base timing info on the\n            // baseMediaDecodeTime and the DTS and PTS durations of the segment.\n\n            return {\n                start: {\n                    dts: baseMediaDecodeTime,\n                    pts: baseMediaDecodeTime + ptsOffsetFromDts\n                },\n                end: {\n                    dts: baseMediaDecodeTime + decodeDuration,\n                    pts: baseMediaDecodeTime + presentationDuration\n                },\n                prependedContentDuration: prependedContentDuration,\n                baseMediaDecodeTime: baseMediaDecodeTime\n            };\n        };\n        /**\n         * Constructs a single-track, ISO BMFF media segment from AAC data\n         * events. The output of this stream can be fed to a SourceBuffer\n         * configured with a suitable initialization segment.\n         * @param track {object} track metadata configuration\n         * @param options {object} transmuxer options object\n         * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n         *        in the source; false to adjust the first segment to start at 0.\n         */\n\n        AudioSegmentStream = function (track, options) {\n            var adtsFrames = [],\n                sequenceNumber,\n                earliestAllowedDts = 0,\n                audioAppendStartTs = 0,\n                videoBaseMediaDecodeTime = Infinity;\n            options = options || {};\n            sequenceNumber = options.firstSequenceNumber || 0;\n            AudioSegmentStream.prototype.init.call(this);\n            this.push = function (data) {\n                trackDecodeInfo.collectDtsInfo(track, data);\n                if (track) {\n                    AUDIO_PROPERTIES.forEach(function (prop) {\n                        track[prop] = data[prop];\n                    });\n                } // buffer audio data until end() is called\n\n                adtsFrames.push(data);\n            };\n            this.setEarliestDts = function (earliestDts) {\n                earliestAllowedDts = earliestDts;\n            };\n            this.setVideoBaseMediaDecodeTime = function (baseMediaDecodeTime) {\n                videoBaseMediaDecodeTime = baseMediaDecodeTime;\n            };\n            this.setAudioAppendStart = function (timestamp) {\n                audioAppendStartTs = timestamp;\n            };\n            this.flush = function () {\n                var frames, moof, mdat, boxes, frameDuration, segmentDuration, videoClockCyclesOfSilencePrefixed; // return early if no audio data has been observed\n\n                if (adtsFrames.length === 0) {\n                    this.trigger('done', 'AudioSegmentStream');\n                    return;\n                }\n                frames = audioFrameUtils.trimAdtsFramesByEarliestDts(adtsFrames, track, earliestAllowedDts);\n                track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps); // amount of audio filled but the value is in video clock rather than audio clock\n\n                videoClockCyclesOfSilencePrefixed = audioFrameUtils.prefixWithSilence(track, frames, audioAppendStartTs, videoBaseMediaDecodeTime); // we have to build the index from byte locations to\n                // samples (that is, adts frames) in the audio data\n\n                track.samples = audioFrameUtils.generateSampleTable(frames); // concatenate the audio data to constuct the mdat\n\n                mdat = mp4.mdat(audioFrameUtils.concatenateFrameData(frames));\n                adtsFrames = [];\n                moof = mp4.moof(sequenceNumber, [track]);\n                boxes = new Uint8Array(moof.byteLength + mdat.byteLength); // bump the sequence number for next time\n\n                sequenceNumber++;\n                boxes.set(moof);\n                boxes.set(mdat, moof.byteLength);\n                trackDecodeInfo.clearDtsInfo(track);\n                frameDuration = Math.ceil(ONE_SECOND_IN_TS$1 * 1024 / track.samplerate); // TODO this check was added to maintain backwards compatibility (particularly with\n                // tests) on adding the timingInfo event. However, it seems unlikely that there's a\n                // valid use-case where an init segment/data should be triggered without associated\n                // frames. Leaving for now, but should be looked into.\n\n                if (frames.length) {\n                    segmentDuration = frames.length * frameDuration;\n                    this.trigger('segmentTimingInfo', generateSegmentTimingInfo(\n                        // The audio track's baseMediaDecodeTime is in audio clock cycles, but the\n                        // frame info is in video clock cycles. Convert to match expectation of\n                        // listeners (that all timestamps will be based on video clock cycles).\n                        clock.audioTsToVideoTs(track.baseMediaDecodeTime, track.samplerate),\n                        // frame times are already in video clock, as is segment duration\n                        frames[0].dts, frames[0].pts, frames[0].dts + segmentDuration, frames[0].pts + segmentDuration, videoClockCyclesOfSilencePrefixed || 0));\n                    this.trigger('timingInfo', {\n                        start: frames[0].pts,\n                        end: frames[0].pts + segmentDuration\n                    });\n                }\n                this.trigger('data', {\n                    track: track,\n                    boxes: boxes\n                });\n                this.trigger('done', 'AudioSegmentStream');\n            };\n            this.reset = function () {\n                trackDecodeInfo.clearDtsInfo(track);\n                adtsFrames = [];\n                this.trigger('reset');\n            };\n        };\n        AudioSegmentStream.prototype = new Stream();\n        /**\n         * Constructs a single-track, ISO BMFF media segment from H264 data\n         * events. The output of this stream can be fed to a SourceBuffer\n         * configured with a suitable initialization segment.\n         * @param track {object} track metadata configuration\n         * @param options {object} transmuxer options object\n         * @param options.alignGopsAtEnd {boolean} If true, start from the end of the\n         *        gopsToAlignWith list when attempting to align gop pts\n         * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n         *        in the source; false to adjust the first segment to start at 0.\n         */\n\n        VideoSegmentStream = function (track, options) {\n            var sequenceNumber,\n                nalUnits = [],\n                gopsToAlignWith = [],\n                config,\n                pps;\n            options = options || {};\n            sequenceNumber = options.firstSequenceNumber || 0;\n            VideoSegmentStream.prototype.init.call(this);\n            delete track.minPTS;\n            this.gopCache_ = [];\n            /**\n             * Constructs a ISO BMFF segment given H264 nalUnits\n             * @param {Object} nalUnit A data event representing a nalUnit\n             * @param {String} nalUnit.nalUnitType\n             * @param {Object} nalUnit.config Properties for a mp4 track\n             * @param {Uint8Array} nalUnit.data The nalUnit bytes\n             * @see lib/codecs/h264.js\n             **/\n\n            this.push = function (nalUnit) {\n                trackDecodeInfo.collectDtsInfo(track, nalUnit); // record the track config\n\n                if (nalUnit.nalUnitType === 'seq_parameter_set_rbsp' && !config) {\n                    config = nalUnit.config;\n                    track.sps = [nalUnit.data];\n                    VIDEO_PROPERTIES.forEach(function (prop) {\n                        track[prop] = config[prop];\n                    }, this);\n                }\n                if (nalUnit.nalUnitType === 'pic_parameter_set_rbsp' && !pps) {\n                    pps = nalUnit.data;\n                    track.pps = [nalUnit.data];\n                } // buffer video until flush() is called\n\n                nalUnits.push(nalUnit);\n            };\n            /**\n             * Pass constructed ISO BMFF track and boxes on to the\n             * next stream in the pipeline\n             **/\n\n            this.flush = function () {\n                var frames,\n                    gopForFusion,\n                    gops,\n                    moof,\n                    mdat,\n                    boxes,\n                    prependedContentDuration = 0,\n                    firstGop,\n                    lastGop; // Throw away nalUnits at the start of the byte stream until\n                // we find the first AUD\n\n                while (nalUnits.length) {\n                    if (nalUnits[0].nalUnitType === 'access_unit_delimiter_rbsp') {\n                        break;\n                    }\n                    nalUnits.shift();\n                } // Return early if no video data has been observed\n\n                if (nalUnits.length === 0) {\n                    this.resetStream_();\n                    this.trigger('done', 'VideoSegmentStream');\n                    return;\n                } // Organize the raw nal-units into arrays that represent\n                // higher-level constructs such as frames and gops\n                // (group-of-pictures)\n\n                frames = frameUtils.groupNalsIntoFrames(nalUnits);\n                gops = frameUtils.groupFramesIntoGops(frames); // If the first frame of this fragment is not a keyframe we have\n                // a problem since MSE (on Chrome) requires a leading keyframe.\n                //\n                // We have two approaches to repairing this situation:\n                // 1) GOP-FUSION:\n                //    This is where we keep track of the GOPS (group-of-pictures)\n                //    from previous fragments and attempt to find one that we can\n                //    prepend to the current fragment in order to create a valid\n                //    fragment.\n                // 2) KEYFRAME-PULLING:\n                //    Here we search for the first keyframe in the fragment and\n                //    throw away all the frames between the start of the fragment\n                //    and that keyframe. We then extend the duration and pull the\n                //    PTS of the keyframe forward so that it covers the time range\n                //    of the frames that were disposed of.\n                //\n                // #1 is far prefereable over #2 which can cause \"stuttering\" but\n                // requires more things to be just right.\n\n                if (!gops[0][0].keyFrame) {\n                    // Search for a gop for fusion from our gopCache\n                    gopForFusion = this.getGopForFusion_(nalUnits[0], track);\n                    if (gopForFusion) {\n                        // in order to provide more accurate timing information about the segment, save\n                        // the number of seconds prepended to the original segment due to GOP fusion\n                        prependedContentDuration = gopForFusion.duration;\n                        gops.unshift(gopForFusion); // Adjust Gops' metadata to account for the inclusion of the\n                        // new gop at the beginning\n\n                        gops.byteLength += gopForFusion.byteLength;\n                        gops.nalCount += gopForFusion.nalCount;\n                        gops.pts = gopForFusion.pts;\n                        gops.dts = gopForFusion.dts;\n                        gops.duration += gopForFusion.duration;\n                    } else {\n                        // If we didn't find a candidate gop fall back to keyframe-pulling\n                        gops = frameUtils.extendFirstKeyFrame(gops);\n                    }\n                } // Trim gops to align with gopsToAlignWith\n\n                if (gopsToAlignWith.length) {\n                    var alignedGops;\n                    if (options.alignGopsAtEnd) {\n                        alignedGops = this.alignGopsAtEnd_(gops);\n                    } else {\n                        alignedGops = this.alignGopsAtStart_(gops);\n                    }\n                    if (!alignedGops) {\n                        // save all the nals in the last GOP into the gop cache\n                        this.gopCache_.unshift({\n                            gop: gops.pop(),\n                            pps: track.pps,\n                            sps: track.sps\n                        }); // Keep a maximum of 6 GOPs in the cache\n\n                        this.gopCache_.length = Math.min(6, this.gopCache_.length); // Clear nalUnits\n\n                        nalUnits = []; // return early no gops can be aligned with desired gopsToAlignWith\n\n                        this.resetStream_();\n                        this.trigger('done', 'VideoSegmentStream');\n                        return;\n                    } // Some gops were trimmed. clear dts info so minSegmentDts and pts are correct\n                    // when recalculated before sending off to CoalesceStream\n\n                    trackDecodeInfo.clearDtsInfo(track);\n                    gops = alignedGops;\n                }\n                trackDecodeInfo.collectDtsInfo(track, gops); // First, we have to build the index from byte locations to\n                // samples (that is, frames) in the video data\n\n                track.samples = frameUtils.generateSampleTable(gops); // Concatenate the video data and construct the mdat\n\n                mdat = mp4.mdat(frameUtils.concatenateNalData(gops));\n                track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps);\n                this.trigger('processedGopsInfo', gops.map(function (gop) {\n                    return {\n                        pts: gop.pts,\n                        dts: gop.dts,\n                        byteLength: gop.byteLength\n                    };\n                }));\n                firstGop = gops[0];\n                lastGop = gops[gops.length - 1];\n                this.trigger('segmentTimingInfo', generateSegmentTimingInfo(track.baseMediaDecodeTime, firstGop.dts, firstGop.pts, lastGop.dts + lastGop.duration, lastGop.pts + lastGop.duration, prependedContentDuration));\n                this.trigger('timingInfo', {\n                    start: gops[0].pts,\n                    end: gops[gops.length - 1].pts + gops[gops.length - 1].duration\n                }); // save all the nals in the last GOP into the gop cache\n\n                this.gopCache_.unshift({\n                    gop: gops.pop(),\n                    pps: track.pps,\n                    sps: track.sps\n                }); // Keep a maximum of 6 GOPs in the cache\n\n                this.gopCache_.length = Math.min(6, this.gopCache_.length); // Clear nalUnits\n\n                nalUnits = [];\n                this.trigger('baseMediaDecodeTime', track.baseMediaDecodeTime);\n                this.trigger('timelineStartInfo', track.timelineStartInfo);\n                moof = mp4.moof(sequenceNumber, [track]); // it would be great to allocate this array up front instead of\n                // throwing away hundreds of media segment fragments\n\n                boxes = new Uint8Array(moof.byteLength + mdat.byteLength); // Bump the sequence number for next time\n\n                sequenceNumber++;\n                boxes.set(moof);\n                boxes.set(mdat, moof.byteLength);\n                this.trigger('data', {\n                    track: track,\n                    boxes: boxes\n                });\n                this.resetStream_(); // Continue with the flush process now\n\n                this.trigger('done', 'VideoSegmentStream');\n            };\n            this.reset = function () {\n                this.resetStream_();\n                nalUnits = [];\n                this.gopCache_.length = 0;\n                gopsToAlignWith.length = 0;\n                this.trigger('reset');\n            };\n            this.resetStream_ = function () {\n                trackDecodeInfo.clearDtsInfo(track); // reset config and pps because they may differ across segments\n                // for instance, when we are rendition switching\n\n                config = undefined;\n                pps = undefined;\n            }; // Search for a candidate Gop for gop-fusion from the gop cache and\n            // return it or return null if no good candidate was found\n\n            this.getGopForFusion_ = function (nalUnit) {\n                var halfSecond = 45000,\n                    // Half-a-second in a 90khz clock\n                    allowableOverlap = 10000,\n                    // About 3 frames @ 30fps\n                    nearestDistance = Infinity,\n                    dtsDistance,\n                    nearestGopObj,\n                    currentGop,\n                    currentGopObj,\n                    i; // Search for the GOP nearest to the beginning of this nal unit\n\n                for (i = 0; i < this.gopCache_.length; i++) {\n                    currentGopObj = this.gopCache_[i];\n                    currentGop = currentGopObj.gop; // Reject Gops with different SPS or PPS\n\n                    if (!(track.pps && arrayEquals(track.pps[0], currentGopObj.pps[0])) || !(track.sps && arrayEquals(track.sps[0], currentGopObj.sps[0]))) {\n                        continue;\n                    } // Reject Gops that would require a negative baseMediaDecodeTime\n\n                    if (currentGop.dts < track.timelineStartInfo.dts) {\n                        continue;\n                    } // The distance between the end of the gop and the start of the nalUnit\n\n                    dtsDistance = nalUnit.dts - currentGop.dts - currentGop.duration; // Only consider GOPS that start before the nal unit and end within\n                    // a half-second of the nal unit\n\n                    if (dtsDistance >= -allowableOverlap && dtsDistance <= halfSecond) {\n                        // Always use the closest GOP we found if there is more than\n                        // one candidate\n                        if (!nearestGopObj || nearestDistance > dtsDistance) {\n                            nearestGopObj = currentGopObj;\n                            nearestDistance = dtsDistance;\n                        }\n                    }\n                }\n                if (nearestGopObj) {\n                    return nearestGopObj.gop;\n                }\n                return null;\n            }; // trim gop list to the first gop found that has a matching pts with a gop in the list\n            // of gopsToAlignWith starting from the START of the list\n\n            this.alignGopsAtStart_ = function (gops) {\n                var alignIndex, gopIndex, align, gop, byteLength, nalCount, duration, alignedGops;\n                byteLength = gops.byteLength;\n                nalCount = gops.nalCount;\n                duration = gops.duration;\n                alignIndex = gopIndex = 0;\n                while (alignIndex < gopsToAlignWith.length && gopIndex < gops.length) {\n                    align = gopsToAlignWith[alignIndex];\n                    gop = gops[gopIndex];\n                    if (align.pts === gop.pts) {\n                        break;\n                    }\n                    if (gop.pts > align.pts) {\n                        // this current gop starts after the current gop we want to align on, so increment\n                        // align index\n                        alignIndex++;\n                        continue;\n                    } // current gop starts before the current gop we want to align on. so increment gop\n                    // index\n\n                    gopIndex++;\n                    byteLength -= gop.byteLength;\n                    nalCount -= gop.nalCount;\n                    duration -= gop.duration;\n                }\n                if (gopIndex === 0) {\n                    // no gops to trim\n                    return gops;\n                }\n                if (gopIndex === gops.length) {\n                    // all gops trimmed, skip appending all gops\n                    return null;\n                }\n                alignedGops = gops.slice(gopIndex);\n                alignedGops.byteLength = byteLength;\n                alignedGops.duration = duration;\n                alignedGops.nalCount = nalCount;\n                alignedGops.pts = alignedGops[0].pts;\n                alignedGops.dts = alignedGops[0].dts;\n                return alignedGops;\n            }; // trim gop list to the first gop found that has a matching pts with a gop in the list\n            // of gopsToAlignWith starting from the END of the list\n\n            this.alignGopsAtEnd_ = function (gops) {\n                var alignIndex, gopIndex, align, gop, alignEndIndex, matchFound;\n                alignIndex = gopsToAlignWith.length - 1;\n                gopIndex = gops.length - 1;\n                alignEndIndex = null;\n                matchFound = false;\n                while (alignIndex >= 0 && gopIndex >= 0) {\n                    align = gopsToAlignWith[alignIndex];\n                    gop = gops[gopIndex];\n                    if (align.pts === gop.pts) {\n                        matchFound = true;\n                        break;\n                    }\n                    if (align.pts > gop.pts) {\n                        alignIndex--;\n                        continue;\n                    }\n                    if (alignIndex === gopsToAlignWith.length - 1) {\n                        // gop.pts is greater than the last alignment candidate. If no match is found\n                        // by the end of this loop, we still want to append gops that come after this\n                        // point\n                        alignEndIndex = gopIndex;\n                    }\n                    gopIndex--;\n                }\n                if (!matchFound && alignEndIndex === null) {\n                    return null;\n                }\n                var trimIndex;\n                if (matchFound) {\n                    trimIndex = gopIndex;\n                } else {\n                    trimIndex = alignEndIndex;\n                }\n                if (trimIndex === 0) {\n                    return gops;\n                }\n                var alignedGops = gops.slice(trimIndex);\n                var metadata = alignedGops.reduce(function (total, gop) {\n                    total.byteLength += gop.byteLength;\n                    total.duration += gop.duration;\n                    total.nalCount += gop.nalCount;\n                    return total;\n                }, {\n                    byteLength: 0,\n                    duration: 0,\n                    nalCount: 0\n                });\n                alignedGops.byteLength = metadata.byteLength;\n                alignedGops.duration = metadata.duration;\n                alignedGops.nalCount = metadata.nalCount;\n                alignedGops.pts = alignedGops[0].pts;\n                alignedGops.dts = alignedGops[0].dts;\n                return alignedGops;\n            };\n            this.alignGopsWith = function (newGopsToAlignWith) {\n                gopsToAlignWith = newGopsToAlignWith;\n            };\n        };\n        VideoSegmentStream.prototype = new Stream();\n        /**\n         * A Stream that can combine multiple streams (ie. audio & video)\n         * into a single output segment for MSE. Also supports audio-only\n         * and video-only streams.\n         * @param options {object} transmuxer options object\n         * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n         *        in the source; false to adjust the first segment to start at media timeline start.\n         */\n\n        CoalesceStream = function (options, metadataStream) {\n            // Number of Tracks per output segment\n            // If greater than 1, we combine multiple\n            // tracks into a single segment\n            this.numberOfTracks = 0;\n            this.metadataStream = metadataStream;\n            options = options || {};\n            if (typeof options.remux !== 'undefined') {\n                this.remuxTracks = !!options.remux;\n            } else {\n                this.remuxTracks = true;\n            }\n            if (typeof options.keepOriginalTimestamps === 'boolean') {\n                this.keepOriginalTimestamps = options.keepOriginalTimestamps;\n            } else {\n                this.keepOriginalTimestamps = false;\n            }\n            this.pendingTracks = [];\n            this.videoTrack = null;\n            this.pendingBoxes = [];\n            this.pendingCaptions = [];\n            this.pendingMetadata = [];\n            this.pendingBytes = 0;\n            this.emittedTracks = 0;\n            CoalesceStream.prototype.init.call(this); // Take output from multiple\n\n            this.push = function (output) {\n                // buffer incoming captions until the associated video segment\n                // finishes\n                if (output.text) {\n                    return this.pendingCaptions.push(output);\n                } // buffer incoming id3 tags until the final flush\n\n                if (output.frames) {\n                    return this.pendingMetadata.push(output);\n                } // Add this track to the list of pending tracks and store\n                // important information required for the construction of\n                // the final segment\n\n                this.pendingTracks.push(output.track);\n                this.pendingBytes += output.boxes.byteLength; // TODO: is there an issue for this against chrome?\n                // We unshift audio and push video because\n                // as of Chrome 75 when switching from\n                // one init segment to another if the video\n                // mdat does not appear after the audio mdat\n                // only audio will play for the duration of our transmux.\n\n                if (output.track.type === 'video') {\n                    this.videoTrack = output.track;\n                    this.pendingBoxes.push(output.boxes);\n                }\n                if (output.track.type === 'audio') {\n                    this.audioTrack = output.track;\n                    this.pendingBoxes.unshift(output.boxes);\n                }\n            };\n        };\n        CoalesceStream.prototype = new Stream();\n        CoalesceStream.prototype.flush = function (flushSource) {\n            var offset = 0,\n                event = {\n                    captions: [],\n                    captionStreams: {},\n                    metadata: [],\n                    info: {}\n                },\n                caption,\n                id3,\n                initSegment,\n                timelineStartPts = 0,\n                i;\n            if (this.pendingTracks.length < this.numberOfTracks) {\n                if (flushSource !== 'VideoSegmentStream' && flushSource !== 'AudioSegmentStream') {\n                    // Return because we haven't received a flush from a data-generating\n                    // portion of the segment (meaning that we have only recieved meta-data\n                    // or captions.)\n                    return;\n                } else if (this.remuxTracks) {\n                    // Return until we have enough tracks from the pipeline to remux (if we\n                    // are remuxing audio and video into a single MP4)\n                    return;\n                } else if (this.pendingTracks.length === 0) {\n                    // In the case where we receive a flush without any data having been\n                    // received we consider it an emitted track for the purposes of coalescing\n                    // `done` events.\n                    // We do this for the case where there is an audio and video track in the\n                    // segment but no audio data. (seen in several playlists with alternate\n                    // audio tracks and no audio present in the main TS segments.)\n                    this.emittedTracks++;\n                    if (this.emittedTracks >= this.numberOfTracks) {\n                        this.trigger('done');\n                        this.emittedTracks = 0;\n                    }\n                    return;\n                }\n            }\n            if (this.videoTrack) {\n                timelineStartPts = this.videoTrack.timelineStartInfo.pts;\n                VIDEO_PROPERTIES.forEach(function (prop) {\n                    event.info[prop] = this.videoTrack[prop];\n                }, this);\n            } else if (this.audioTrack) {\n                timelineStartPts = this.audioTrack.timelineStartInfo.pts;\n                AUDIO_PROPERTIES.forEach(function (prop) {\n                    event.info[prop] = this.audioTrack[prop];\n                }, this);\n            }\n            if (this.videoTrack || this.audioTrack) {\n                if (this.pendingTracks.length === 1) {\n                    event.type = this.pendingTracks[0].type;\n                } else {\n                    event.type = 'combined';\n                }\n                this.emittedTracks += this.pendingTracks.length;\n                initSegment = mp4.initSegment(this.pendingTracks); // Create a new typed array to hold the init segment\n\n                event.initSegment = new Uint8Array(initSegment.byteLength); // Create an init segment containing a moov\n                // and track definitions\n\n                event.initSegment.set(initSegment); // Create a new typed array to hold the moof+mdats\n\n                event.data = new Uint8Array(this.pendingBytes); // Append each moof+mdat (one per track) together\n\n                for (i = 0; i < this.pendingBoxes.length; i++) {\n                    event.data.set(this.pendingBoxes[i], offset);\n                    offset += this.pendingBoxes[i].byteLength;\n                } // Translate caption PTS times into second offsets to match the\n                // video timeline for the segment, and add track info\n\n                for (i = 0; i < this.pendingCaptions.length; i++) {\n                    caption = this.pendingCaptions[i];\n                    caption.startTime = clock.metadataTsToSeconds(caption.startPts, timelineStartPts, this.keepOriginalTimestamps);\n                    caption.endTime = clock.metadataTsToSeconds(caption.endPts, timelineStartPts, this.keepOriginalTimestamps);\n                    event.captionStreams[caption.stream] = true;\n                    event.captions.push(caption);\n                } // Translate ID3 frame PTS times into second offsets to match the\n                // video timeline for the segment\n\n                for (i = 0; i < this.pendingMetadata.length; i++) {\n                    id3 = this.pendingMetadata[i];\n                    id3.cueTime = clock.metadataTsToSeconds(id3.pts, timelineStartPts, this.keepOriginalTimestamps);\n                    event.metadata.push(id3);\n                } // We add this to every single emitted segment even though we only need\n                // it for the first\n\n                event.metadata.dispatchType = this.metadataStream.dispatchType; // Reset stream state\n\n                this.pendingTracks.length = 0;\n                this.videoTrack = null;\n                this.pendingBoxes.length = 0;\n                this.pendingCaptions.length = 0;\n                this.pendingBytes = 0;\n                this.pendingMetadata.length = 0; // Emit the built segment\n                // We include captions and ID3 tags for backwards compatibility,\n                // ideally we should send only video and audio in the data event\n\n                this.trigger('data', event); // Emit each caption to the outside world\n                // Ideally, this would happen immediately on parsing captions,\n                // but we need to ensure that video data is sent back first\n                // so that caption timing can be adjusted to match video timing\n\n                for (i = 0; i < event.captions.length; i++) {\n                    caption = event.captions[i];\n                    this.trigger('caption', caption);\n                } // Emit each id3 tag to the outside world\n                // Ideally, this would happen immediately on parsing the tag,\n                // but we need to ensure that video data is sent back first\n                // so that ID3 frame timing can be adjusted to match video timing\n\n                for (i = 0; i < event.metadata.length; i++) {\n                    id3 = event.metadata[i];\n                    this.trigger('id3Frame', id3);\n                }\n            } // Only emit `done` if all tracks have been flushed and emitted\n\n            if (this.emittedTracks >= this.numberOfTracks) {\n                this.trigger('done');\n                this.emittedTracks = 0;\n            }\n        };\n        CoalesceStream.prototype.setRemux = function (val) {\n            this.remuxTracks = val;\n        };\n        /**\n         * A Stream that expects MP2T binary data as input and produces\n         * corresponding media segments, suitable for use with Media Source\n         * Extension (MSE) implementations that support the ISO BMFF byte\n         * stream format, like Chrome.\n         */\n\n        Transmuxer = function (options) {\n            var self = this,\n                hasFlushed = true,\n                videoTrack,\n                audioTrack;\n            Transmuxer.prototype.init.call(this);\n            options = options || {};\n            this.baseMediaDecodeTime = options.baseMediaDecodeTime || 0;\n            this.transmuxPipeline_ = {};\n            this.setupAacPipeline = function () {\n                var pipeline = {};\n                this.transmuxPipeline_ = pipeline;\n                pipeline.type = 'aac';\n                pipeline.metadataStream = new m2ts.MetadataStream(); // set up the parsing pipeline\n\n                pipeline.aacStream = new AacStream();\n                pipeline.audioTimestampRolloverStream = new m2ts.TimestampRolloverStream('audio');\n                pipeline.timedMetadataTimestampRolloverStream = new m2ts.TimestampRolloverStream('timed-metadata');\n                pipeline.adtsStream = new AdtsStream();\n                pipeline.coalesceStream = new CoalesceStream(options, pipeline.metadataStream);\n                pipeline.headOfPipeline = pipeline.aacStream;\n                pipeline.aacStream.pipe(pipeline.audioTimestampRolloverStream).pipe(pipeline.adtsStream);\n                pipeline.aacStream.pipe(pipeline.timedMetadataTimestampRolloverStream).pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream);\n                pipeline.metadataStream.on('timestamp', function (frame) {\n                    pipeline.aacStream.setTimestamp(frame.timeStamp);\n                });\n                pipeline.aacStream.on('data', function (data) {\n                    if (data.type !== 'timed-metadata' && data.type !== 'audio' || pipeline.audioSegmentStream) {\n                        return;\n                    }\n                    audioTrack = audioTrack || {\n                        timelineStartInfo: {\n                            baseMediaDecodeTime: self.baseMediaDecodeTime\n                        },\n                        codec: 'adts',\n                        type: 'audio'\n                    }; // hook up the audio segment stream to the first track with aac data\n\n                    pipeline.coalesceStream.numberOfTracks++;\n                    pipeline.audioSegmentStream = new AudioSegmentStream(audioTrack, options);\n                    pipeline.audioSegmentStream.on('log', self.getLogTrigger_('audioSegmentStream'));\n                    pipeline.audioSegmentStream.on('timingInfo', self.trigger.bind(self, 'audioTimingInfo')); // Set up the final part of the audio pipeline\n\n                    pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream); // emit pmt info\n\n                    self.trigger('trackinfo', {\n                        hasAudio: !!audioTrack,\n                        hasVideo: !!videoTrack\n                    });\n                }); // Re-emit any data coming from the coalesce stream to the outside world\n\n                pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data')); // Let the consumer know we have finished flushing the entire pipeline\n\n                pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));\n                addPipelineLogRetriggers(this, pipeline);\n            };\n            this.setupTsPipeline = function () {\n                var pipeline = {};\n                this.transmuxPipeline_ = pipeline;\n                pipeline.type = 'ts';\n                pipeline.metadataStream = new m2ts.MetadataStream(); // set up the parsing pipeline\n\n                pipeline.packetStream = new m2ts.TransportPacketStream();\n                pipeline.parseStream = new m2ts.TransportParseStream();\n                pipeline.elementaryStream = new m2ts.ElementaryStream();\n                pipeline.timestampRolloverStream = new m2ts.TimestampRolloverStream();\n                pipeline.adtsStream = new AdtsStream();\n                pipeline.h264Stream = new H264Stream();\n                pipeline.captionStream = new m2ts.CaptionStream(options);\n                pipeline.coalesceStream = new CoalesceStream(options, pipeline.metadataStream);\n                pipeline.headOfPipeline = pipeline.packetStream; // disassemble MPEG2-TS packets into elementary streams\n\n                pipeline.packetStream.pipe(pipeline.parseStream).pipe(pipeline.elementaryStream).pipe(pipeline.timestampRolloverStream); // !!THIS ORDER IS IMPORTANT!!\n                // demux the streams\n\n                pipeline.timestampRolloverStream.pipe(pipeline.h264Stream);\n                pipeline.timestampRolloverStream.pipe(pipeline.adtsStream);\n                pipeline.timestampRolloverStream.pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream); // Hook up CEA-608/708 caption stream\n\n                pipeline.h264Stream.pipe(pipeline.captionStream).pipe(pipeline.coalesceStream);\n                pipeline.elementaryStream.on('data', function (data) {\n                    var i;\n                    if (data.type === 'metadata') {\n                        i = data.tracks.length; // scan the tracks listed in the metadata\n\n                        while (i--) {\n                            if (!videoTrack && data.tracks[i].type === 'video') {\n                                videoTrack = data.tracks[i];\n                                videoTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;\n                            } else if (!audioTrack && data.tracks[i].type === 'audio') {\n                                audioTrack = data.tracks[i];\n                                audioTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;\n                            }\n                        } // hook up the video segment stream to the first track with h264 data\n\n                        if (videoTrack && !pipeline.videoSegmentStream) {\n                            pipeline.coalesceStream.numberOfTracks++;\n                            pipeline.videoSegmentStream = new VideoSegmentStream(videoTrack, options);\n                            pipeline.videoSegmentStream.on('log', self.getLogTrigger_('videoSegmentStream'));\n                            pipeline.videoSegmentStream.on('timelineStartInfo', function (timelineStartInfo) {\n                                // When video emits timelineStartInfo data after a flush, we forward that\n                                // info to the AudioSegmentStream, if it exists, because video timeline\n                                // data takes precedence.  Do not do this if keepOriginalTimestamps is set,\n                                // because this is a particularly subtle form of timestamp alteration.\n                                if (audioTrack && !options.keepOriginalTimestamps) {\n                                    audioTrack.timelineStartInfo = timelineStartInfo; // On the first segment we trim AAC frames that exist before the\n                                    // very earliest DTS we have seen in video because Chrome will\n                                    // interpret any video track with a baseMediaDecodeTime that is\n                                    // non-zero as a gap.\n\n                                    pipeline.audioSegmentStream.setEarliestDts(timelineStartInfo.dts - self.baseMediaDecodeTime);\n                                }\n                            });\n                            pipeline.videoSegmentStream.on('processedGopsInfo', self.trigger.bind(self, 'gopInfo'));\n                            pipeline.videoSegmentStream.on('segmentTimingInfo', self.trigger.bind(self, 'videoSegmentTimingInfo'));\n                            pipeline.videoSegmentStream.on('baseMediaDecodeTime', function (baseMediaDecodeTime) {\n                                if (audioTrack) {\n                                    pipeline.audioSegmentStream.setVideoBaseMediaDecodeTime(baseMediaDecodeTime);\n                                }\n                            });\n                            pipeline.videoSegmentStream.on('timingInfo', self.trigger.bind(self, 'videoTimingInfo')); // Set up the final part of the video pipeline\n\n                            pipeline.h264Stream.pipe(pipeline.videoSegmentStream).pipe(pipeline.coalesceStream);\n                        }\n                        if (audioTrack && !pipeline.audioSegmentStream) {\n                            // hook up the audio segment stream to the first track with aac data\n                            pipeline.coalesceStream.numberOfTracks++;\n                            pipeline.audioSegmentStream = new AudioSegmentStream(audioTrack, options);\n                            pipeline.audioSegmentStream.on('log', self.getLogTrigger_('audioSegmentStream'));\n                            pipeline.audioSegmentStream.on('timingInfo', self.trigger.bind(self, 'audioTimingInfo'));\n                            pipeline.audioSegmentStream.on('segmentTimingInfo', self.trigger.bind(self, 'audioSegmentTimingInfo')); // Set up the final part of the audio pipeline\n\n                            pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream);\n                        } // emit pmt info\n\n                        self.trigger('trackinfo', {\n                            hasAudio: !!audioTrack,\n                            hasVideo: !!videoTrack\n                        });\n                    }\n                }); // Re-emit any data coming from the coalesce stream to the outside world\n\n                pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data'));\n                pipeline.coalesceStream.on('id3Frame', function (id3Frame) {\n                    id3Frame.dispatchType = pipeline.metadataStream.dispatchType;\n                    self.trigger('id3Frame', id3Frame);\n                });\n                pipeline.coalesceStream.on('caption', this.trigger.bind(this, 'caption')); // Let the consumer know we have finished flushing the entire pipeline\n\n                pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));\n                addPipelineLogRetriggers(this, pipeline);\n            }; // hook up the segment streams once track metadata is delivered\n\n            this.setBaseMediaDecodeTime = function (baseMediaDecodeTime) {\n                var pipeline = this.transmuxPipeline_;\n                if (!options.keepOriginalTimestamps) {\n                    this.baseMediaDecodeTime = baseMediaDecodeTime;\n                }\n                if (audioTrack) {\n                    audioTrack.timelineStartInfo.dts = undefined;\n                    audioTrack.timelineStartInfo.pts = undefined;\n                    trackDecodeInfo.clearDtsInfo(audioTrack);\n                    if (pipeline.audioTimestampRolloverStream) {\n                        pipeline.audioTimestampRolloverStream.discontinuity();\n                    }\n                }\n                if (videoTrack) {\n                    if (pipeline.videoSegmentStream) {\n                        pipeline.videoSegmentStream.gopCache_ = [];\n                    }\n                    videoTrack.timelineStartInfo.dts = undefined;\n                    videoTrack.timelineStartInfo.pts = undefined;\n                    trackDecodeInfo.clearDtsInfo(videoTrack);\n                    pipeline.captionStream.reset();\n                }\n                if (pipeline.timestampRolloverStream) {\n                    pipeline.timestampRolloverStream.discontinuity();\n                }\n            };\n            this.setAudioAppendStart = function (timestamp) {\n                if (audioTrack) {\n                    this.transmuxPipeline_.audioSegmentStream.setAudioAppendStart(timestamp);\n                }\n            };\n            this.setRemux = function (val) {\n                var pipeline = this.transmuxPipeline_;\n                options.remux = val;\n                if (pipeline && pipeline.coalesceStream) {\n                    pipeline.coalesceStream.setRemux(val);\n                }\n            };\n            this.alignGopsWith = function (gopsToAlignWith) {\n                if (videoTrack && this.transmuxPipeline_.videoSegmentStream) {\n                    this.transmuxPipeline_.videoSegmentStream.alignGopsWith(gopsToAlignWith);\n                }\n            };\n            this.getLogTrigger_ = function (key) {\n                var self = this;\n                return function (event) {\n                    event.stream = key;\n                    self.trigger('log', event);\n                };\n            }; // feed incoming data to the front of the parsing pipeline\n\n            this.push = function (data) {\n                if (hasFlushed) {\n                    var isAac = isLikelyAacData(data);\n                    if (isAac && this.transmuxPipeline_.type !== 'aac') {\n                        this.setupAacPipeline();\n                    } else if (!isAac && this.transmuxPipeline_.type !== 'ts') {\n                        this.setupTsPipeline();\n                    }\n                    hasFlushed = false;\n                }\n                this.transmuxPipeline_.headOfPipeline.push(data);\n            }; // flush any buffered data\n\n            this.flush = function () {\n                hasFlushed = true; // Start at the top of the pipeline and flush all pending work\n\n                this.transmuxPipeline_.headOfPipeline.flush();\n            };\n            this.endTimeline = function () {\n                this.transmuxPipeline_.headOfPipeline.endTimeline();\n            };\n            this.reset = function () {\n                if (this.transmuxPipeline_.headOfPipeline) {\n                    this.transmuxPipeline_.headOfPipeline.reset();\n                }\n            }; // Caption data has to be reset when seeking outside buffered range\n\n            this.resetCaptions = function () {\n                if (this.transmuxPipeline_.captionStream) {\n                    this.transmuxPipeline_.captionStream.reset();\n                }\n            };\n        };\n        Transmuxer.prototype = new Stream();\n        var transmuxer = {\n            Transmuxer: Transmuxer,\n            VideoSegmentStream: VideoSegmentStream,\n            AudioSegmentStream: AudioSegmentStream,\n            AUDIO_PROPERTIES: AUDIO_PROPERTIES,\n            VIDEO_PROPERTIES: VIDEO_PROPERTIES,\n            // exported for testing\n            generateSegmentTimingInfo: generateSegmentTimingInfo\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n\n        var toUnsigned$3 = function (value) {\n            return value >>> 0;\n        };\n        var toHexString$1 = function (value) {\n            return ('00' + value.toString(16)).slice(-2);\n        };\n        var bin = {\n            toUnsigned: toUnsigned$3,\n            toHexString: toHexString$1\n        };\n        var parseType$3 = function (buffer) {\n            var result = '';\n            result += String.fromCharCode(buffer[0]);\n            result += String.fromCharCode(buffer[1]);\n            result += String.fromCharCode(buffer[2]);\n            result += String.fromCharCode(buffer[3]);\n            return result;\n        };\n        var parseType_1 = parseType$3;\n        var toUnsigned$2 = bin.toUnsigned;\n        var parseType$2 = parseType_1;\n        var findBox$2 = function (data, path) {\n            var results = [],\n                i,\n                size,\n                type,\n                end,\n                subresults;\n            if (!path.length) {\n                // short-circuit the search for empty paths\n                return null;\n            }\n            for (i = 0; i < data.byteLength;) {\n                size = toUnsigned$2(data[i] << 24 | data[i + 1] << 16 | data[i + 2] << 8 | data[i + 3]);\n                type = parseType$2(data.subarray(i + 4, i + 8));\n                end = size > 1 ? i + size : data.byteLength;\n                if (type === path[0]) {\n                    if (path.length === 1) {\n                        // this is the end of the path and we've found the box we were\n                        // looking for\n                        results.push(data.subarray(i + 8, end));\n                    } else {\n                        // recursively search for the next box along the path\n                        subresults = findBox$2(data.subarray(i + 8, end), path.slice(1));\n                        if (subresults.length) {\n                            results = results.concat(subresults);\n                        }\n                    }\n                }\n                i = end;\n            } // we've finished searching all of data\n\n            return results;\n        };\n        var findBox_1 = findBox$2;\n        var toUnsigned$1 = bin.toUnsigned;\n        var getUint64$2 = numbers.getUint64;\n        var tfdt = function (data) {\n            var result = {\n                version: data[0],\n                flags: new Uint8Array(data.subarray(1, 4))\n            };\n            if (result.version === 1) {\n                result.baseMediaDecodeTime = getUint64$2(data.subarray(4));\n            } else {\n                result.baseMediaDecodeTime = toUnsigned$1(data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7]);\n            }\n            return result;\n        };\n        var parseTfdt$2 = tfdt;\n        var parseSampleFlags$1 = function (flags) {\n            return {\n                isLeading: (flags[0] & 0x0c) >>> 2,\n                dependsOn: flags[0] & 0x03,\n                isDependedOn: (flags[1] & 0xc0) >>> 6,\n                hasRedundancy: (flags[1] & 0x30) >>> 4,\n                paddingValue: (flags[1] & 0x0e) >>> 1,\n                isNonSyncSample: flags[1] & 0x01,\n                degradationPriority: flags[2] << 8 | flags[3]\n            };\n        };\n        var parseSampleFlags_1 = parseSampleFlags$1;\n        var parseSampleFlags = parseSampleFlags_1;\n        var trun = function (data) {\n            var result = {\n                    version: data[0],\n                    flags: new Uint8Array(data.subarray(1, 4)),\n                    samples: []\n                },\n                view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n                // Flag interpretation\n                dataOffsetPresent = result.flags[2] & 0x01,\n                // compare with 2nd byte of 0x1\n                firstSampleFlagsPresent = result.flags[2] & 0x04,\n                // compare with 2nd byte of 0x4\n                sampleDurationPresent = result.flags[1] & 0x01,\n                // compare with 2nd byte of 0x100\n                sampleSizePresent = result.flags[1] & 0x02,\n                // compare with 2nd byte of 0x200\n                sampleFlagsPresent = result.flags[1] & 0x04,\n                // compare with 2nd byte of 0x400\n                sampleCompositionTimeOffsetPresent = result.flags[1] & 0x08,\n                // compare with 2nd byte of 0x800\n                sampleCount = view.getUint32(4),\n                offset = 8,\n                sample;\n            if (dataOffsetPresent) {\n                // 32 bit signed integer\n                result.dataOffset = view.getInt32(offset);\n                offset += 4;\n            } // Overrides the flags for the first sample only. The order of\n            // optional values will be: duration, size, compositionTimeOffset\n\n            if (firstSampleFlagsPresent && sampleCount) {\n                sample = {\n                    flags: parseSampleFlags(data.subarray(offset, offset + 4))\n                };\n                offset += 4;\n                if (sampleDurationPresent) {\n                    sample.duration = view.getUint32(offset);\n                    offset += 4;\n                }\n                if (sampleSizePresent) {\n                    sample.size = view.getUint32(offset);\n                    offset += 4;\n                }\n                if (sampleCompositionTimeOffsetPresent) {\n                    if (result.version === 1) {\n                        sample.compositionTimeOffset = view.getInt32(offset);\n                    } else {\n                        sample.compositionTimeOffset = view.getUint32(offset);\n                    }\n                    offset += 4;\n                }\n                result.samples.push(sample);\n                sampleCount--;\n            }\n            while (sampleCount--) {\n                sample = {};\n                if (sampleDurationPresent) {\n                    sample.duration = view.getUint32(offset);\n                    offset += 4;\n                }\n                if (sampleSizePresent) {\n                    sample.size = view.getUint32(offset);\n                    offset += 4;\n                }\n                if (sampleFlagsPresent) {\n                    sample.flags = parseSampleFlags(data.subarray(offset, offset + 4));\n                    offset += 4;\n                }\n                if (sampleCompositionTimeOffsetPresent) {\n                    if (result.version === 1) {\n                        sample.compositionTimeOffset = view.getInt32(offset);\n                    } else {\n                        sample.compositionTimeOffset = view.getUint32(offset);\n                    }\n                    offset += 4;\n                }\n                result.samples.push(sample);\n            }\n            return result;\n        };\n        var parseTrun$2 = trun;\n        var tfhd = function (data) {\n            var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n                result = {\n                    version: data[0],\n                    flags: new Uint8Array(data.subarray(1, 4)),\n                    trackId: view.getUint32(4)\n                },\n                baseDataOffsetPresent = result.flags[2] & 0x01,\n                sampleDescriptionIndexPresent = result.flags[2] & 0x02,\n                defaultSampleDurationPresent = result.flags[2] & 0x08,\n                defaultSampleSizePresent = result.flags[2] & 0x10,\n                defaultSampleFlagsPresent = result.flags[2] & 0x20,\n                durationIsEmpty = result.flags[0] & 0x010000,\n                defaultBaseIsMoof = result.flags[0] & 0x020000,\n                i;\n            i = 8;\n            if (baseDataOffsetPresent) {\n                i += 4; // truncate top 4 bytes\n                // FIXME: should we read the full 64 bits?\n\n                result.baseDataOffset = view.getUint32(12);\n                i += 4;\n            }\n            if (sampleDescriptionIndexPresent) {\n                result.sampleDescriptionIndex = view.getUint32(i);\n                i += 4;\n            }\n            if (defaultSampleDurationPresent) {\n                result.defaultSampleDuration = view.getUint32(i);\n                i += 4;\n            }\n            if (defaultSampleSizePresent) {\n                result.defaultSampleSize = view.getUint32(i);\n                i += 4;\n            }\n            if (defaultSampleFlagsPresent) {\n                result.defaultSampleFlags = view.getUint32(i);\n            }\n            if (durationIsEmpty) {\n                result.durationIsEmpty = true;\n            }\n            if (!baseDataOffsetPresent && defaultBaseIsMoof) {\n                result.baseDataOffsetIsMoof = true;\n            }\n            return result;\n        };\n        var parseTfhd$2 = tfhd;\n        var win;\n        if (typeof window !== \"undefined\") {\n            win = window;\n        } else if (typeof commonjsGlobal !== \"undefined\") {\n            win = commonjsGlobal;\n        } else if (typeof self !== \"undefined\") {\n            win = self;\n        } else {\n            win = {};\n        }\n        var window_1 = win;\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Reads in-band CEA-708 captions out of FMP4 segments.\n         * @see https://en.wikipedia.org/wiki/CEA-708\n         */\n\n        var discardEmulationPreventionBytes = captionPacketParser.discardEmulationPreventionBytes;\n        var CaptionStream = captionStream.CaptionStream;\n        var findBox$1 = findBox_1;\n        var parseTfdt$1 = parseTfdt$2;\n        var parseTrun$1 = parseTrun$2;\n        var parseTfhd$1 = parseTfhd$2;\n        var window$2 = window_1;\n        /**\n         * Maps an offset in the mdat to a sample based on the the size of the samples.\n         * Assumes that `parseSamples` has been called first.\n         *\n         * @param {Number} offset - The offset into the mdat\n         * @param {Object[]} samples - An array of samples, parsed using `parseSamples`\n         * @return {?Object} The matching sample, or null if no match was found.\n         *\n         * @see ISO-BMFF-12/2015, Section 8.8.8\n         **/\n\n        var mapToSample = function (offset, samples) {\n            var approximateOffset = offset;\n            for (var i = 0; i < samples.length; i++) {\n                var sample = samples[i];\n                if (approximateOffset < sample.size) {\n                    return sample;\n                }\n                approximateOffset -= sample.size;\n            }\n            return null;\n        };\n        /**\n         * Finds SEI nal units contained in a Media Data Box.\n         * Assumes that `parseSamples` has been called first.\n         *\n         * @param {Uint8Array} avcStream - The bytes of the mdat\n         * @param {Object[]} samples - The samples parsed out by `parseSamples`\n         * @param {Number} trackId - The trackId of this video track\n         * @return {Object[]} seiNals - the parsed SEI NALUs found.\n         *   The contents of the seiNal should match what is expected by\n         *   CaptionStream.push (nalUnitType, size, data, escapedRBSP, pts, dts)\n         *\n         * @see ISO-BMFF-12/2015, Section 8.1.1\n         * @see Rec. ITU-T H.264, 7.3.2.3.1\n         **/\n\n        var findSeiNals = function (avcStream, samples, trackId) {\n            var avcView = new DataView(avcStream.buffer, avcStream.byteOffset, avcStream.byteLength),\n                result = {\n                    logs: [],\n                    seiNals: []\n                },\n                seiNal,\n                i,\n                length,\n                lastMatchedSample;\n            for (i = 0; i + 4 < avcStream.length; i += length) {\n                length = avcView.getUint32(i);\n                i += 4; // Bail if this doesn't appear to be an H264 stream\n\n                if (length <= 0) {\n                    continue;\n                }\n                switch (avcStream[i] & 0x1F) {\n                    case 0x06:\n                        var data = avcStream.subarray(i + 1, i + 1 + length);\n                        var matchingSample = mapToSample(i, samples);\n                        seiNal = {\n                            nalUnitType: 'sei_rbsp',\n                            size: length,\n                            data: data,\n                            escapedRBSP: discardEmulationPreventionBytes(data),\n                            trackId: trackId\n                        };\n                        if (matchingSample) {\n                            seiNal.pts = matchingSample.pts;\n                            seiNal.dts = matchingSample.dts;\n                            lastMatchedSample = matchingSample;\n                        } else if (lastMatchedSample) {\n                            // If a matching sample cannot be found, use the last\n                            // sample's values as they should be as close as possible\n                            seiNal.pts = lastMatchedSample.pts;\n                            seiNal.dts = lastMatchedSample.dts;\n                        } else {\n                            result.logs.push({\n                                level: 'warn',\n                                message: 'We\\'ve encountered a nal unit without data at ' + i + ' for trackId ' + trackId + '. See mux.js#223.'\n                            });\n                            break;\n                        }\n                        result.seiNals.push(seiNal);\n                        break;\n                }\n            }\n            return result;\n        };\n        /**\n         * Parses sample information out of Track Run Boxes and calculates\n         * the absolute presentation and decode timestamps of each sample.\n         *\n         * @param {Array<Uint8Array>} truns - The Trun Run boxes to be parsed\n         * @param {Number|BigInt} baseMediaDecodeTime - base media decode time from tfdt\n         @see ISO-BMFF-12/2015, Section 8.8.12\n         * @param {Object} tfhd - The parsed Track Fragment Header\n         *   @see inspect.parseTfhd\n         * @return {Object[]} the parsed samples\n         *\n         * @see ISO-BMFF-12/2015, Section 8.8.8\n         **/\n\n        var parseSamples = function (truns, baseMediaDecodeTime, tfhd) {\n            var currentDts = baseMediaDecodeTime;\n            var defaultSampleDuration = tfhd.defaultSampleDuration || 0;\n            var defaultSampleSize = tfhd.defaultSampleSize || 0;\n            var trackId = tfhd.trackId;\n            var allSamples = [];\n            truns.forEach(function (trun) {\n                // Note: We currently do not parse the sample table as well\n                // as the trun. It's possible some sources will require this.\n                // moov > trak > mdia > minf > stbl\n                var trackRun = parseTrun$1(trun);\n                var samples = trackRun.samples;\n                samples.forEach(function (sample) {\n                    if (sample.duration === undefined) {\n                        sample.duration = defaultSampleDuration;\n                    }\n                    if (sample.size === undefined) {\n                        sample.size = defaultSampleSize;\n                    }\n                    sample.trackId = trackId;\n                    sample.dts = currentDts;\n                    if (sample.compositionTimeOffset === undefined) {\n                        sample.compositionTimeOffset = 0;\n                    }\n                    if (typeof currentDts === 'bigint') {\n                        sample.pts = currentDts + window$2.BigInt(sample.compositionTimeOffset);\n                        currentDts += window$2.BigInt(sample.duration);\n                    } else {\n                        sample.pts = currentDts + sample.compositionTimeOffset;\n                        currentDts += sample.duration;\n                    }\n                });\n                allSamples = allSamples.concat(samples);\n            });\n            return allSamples;\n        };\n        /**\n         * Parses out caption nals from an FMP4 segment's video tracks.\n         *\n         * @param {Uint8Array} segment - The bytes of a single segment\n         * @param {Number} videoTrackId - The trackId of a video track in the segment\n         * @return {Object.<Number, Object[]>} A mapping of video trackId to\n         *   a list of seiNals found in that track\n         **/\n\n        var parseCaptionNals = function (segment, videoTrackId) {\n            // To get the samples\n            var trafs = findBox$1(segment, ['moof', 'traf']); // To get SEI NAL units\n\n            var mdats = findBox$1(segment, ['mdat']);\n            var captionNals = {};\n            var mdatTrafPairs = []; // Pair up each traf with a mdat as moofs and mdats are in pairs\n\n            mdats.forEach(function (mdat, index) {\n                var matchingTraf = trafs[index];\n                mdatTrafPairs.push({\n                    mdat: mdat,\n                    traf: matchingTraf\n                });\n            });\n            mdatTrafPairs.forEach(function (pair) {\n                var mdat = pair.mdat;\n                var traf = pair.traf;\n                var tfhd = findBox$1(traf, ['tfhd']); // Exactly 1 tfhd per traf\n\n                var headerInfo = parseTfhd$1(tfhd[0]);\n                var trackId = headerInfo.trackId;\n                var tfdt = findBox$1(traf, ['tfdt']); // Either 0 or 1 tfdt per traf\n\n                var baseMediaDecodeTime = tfdt.length > 0 ? parseTfdt$1(tfdt[0]).baseMediaDecodeTime : 0;\n                var truns = findBox$1(traf, ['trun']);\n                var samples;\n                var result; // Only parse video data for the chosen video track\n\n                if (videoTrackId === trackId && truns.length > 0) {\n                    samples = parseSamples(truns, baseMediaDecodeTime, headerInfo);\n                    result = findSeiNals(mdat, samples, trackId);\n                    if (!captionNals[trackId]) {\n                        captionNals[trackId] = {\n                            seiNals: [],\n                            logs: []\n                        };\n                    }\n                    captionNals[trackId].seiNals = captionNals[trackId].seiNals.concat(result.seiNals);\n                    captionNals[trackId].logs = captionNals[trackId].logs.concat(result.logs);\n                }\n            });\n            return captionNals;\n        };\n        /**\n         * Parses out inband captions from an MP4 container and returns\n         * caption objects that can be used by WebVTT and the TextTrack API.\n         * @see https://developer.mozilla.org/en-US/docs/Web/API/VTTCue\n         * @see https://developer.mozilla.org/en-US/docs/Web/API/TextTrack\n         * Assumes that `probe.getVideoTrackIds` and `probe.timescale` have been called first\n         *\n         * @param {Uint8Array} segment - The fmp4 segment containing embedded captions\n         * @param {Number} trackId - The id of the video track to parse\n         * @param {Number} timescale - The timescale for the video track from the init segment\n         *\n         * @return {?Object[]} parsedCaptions - A list of captions or null if no video tracks\n         * @return {Number} parsedCaptions[].startTime - The time to show the caption in seconds\n         * @return {Number} parsedCaptions[].endTime - The time to stop showing the caption in seconds\n         * @return {String} parsedCaptions[].text - The visible content of the caption\n         **/\n\n        var parseEmbeddedCaptions = function (segment, trackId, timescale) {\n            var captionNals; // the ISO-BMFF spec says that trackId can't be zero, but there's some broken content out there\n\n            if (trackId === null) {\n                return null;\n            }\n            captionNals = parseCaptionNals(segment, trackId);\n            var trackNals = captionNals[trackId] || {};\n            return {\n                seiNals: trackNals.seiNals,\n                logs: trackNals.logs,\n                timescale: timescale\n            };\n        };\n        /**\n         * Converts SEI NALUs into captions that can be used by video.js\n         **/\n\n        var CaptionParser = function () {\n            var isInitialized = false;\n            var captionStream; // Stores segments seen before trackId and timescale are set\n\n            var segmentCache; // Stores video track ID of the track being parsed\n\n            var trackId; // Stores the timescale of the track being parsed\n\n            var timescale; // Stores captions parsed so far\n\n            var parsedCaptions; // Stores whether we are receiving partial data or not\n\n            var parsingPartial;\n            /**\n             * A method to indicate whether a CaptionParser has been initalized\n             * @returns {Boolean}\n             **/\n\n            this.isInitialized = function () {\n                return isInitialized;\n            };\n            /**\n             * Initializes the underlying CaptionStream, SEI NAL parsing\n             * and management, and caption collection\n             **/\n\n            this.init = function (options) {\n                captionStream = new CaptionStream();\n                isInitialized = true;\n                parsingPartial = options ? options.isPartial : false; // Collect dispatched captions\n\n                captionStream.on('data', function (event) {\n                    // Convert to seconds in the source's timescale\n                    event.startTime = event.startPts / timescale;\n                    event.endTime = event.endPts / timescale;\n                    parsedCaptions.captions.push(event);\n                    parsedCaptions.captionStreams[event.stream] = true;\n                });\n                captionStream.on('log', function (log) {\n                    parsedCaptions.logs.push(log);\n                });\n            };\n            /**\n             * Determines if a new video track will be selected\n             * or if the timescale changed\n             * @return {Boolean}\n             **/\n\n            this.isNewInit = function (videoTrackIds, timescales) {\n                if (videoTrackIds && videoTrackIds.length === 0 || timescales && typeof timescales === 'object' && Object.keys(timescales).length === 0) {\n                    return false;\n                }\n                return trackId !== videoTrackIds[0] || timescale !== timescales[trackId];\n            };\n            /**\n             * Parses out SEI captions and interacts with underlying\n             * CaptionStream to return dispatched captions\n             *\n             * @param {Uint8Array} segment - The fmp4 segment containing embedded captions\n             * @param {Number[]} videoTrackIds - A list of video tracks found in the init segment\n             * @param {Object.<Number, Number>} timescales - The timescales found in the init segment\n             * @see parseEmbeddedCaptions\n             * @see m2ts/caption-stream.js\n             **/\n\n            this.parse = function (segment, videoTrackIds, timescales) {\n                var parsedData;\n                if (!this.isInitialized()) {\n                    return null; // This is not likely to be a video segment\n                } else if (!videoTrackIds || !timescales) {\n                    return null;\n                } else if (this.isNewInit(videoTrackIds, timescales)) {\n                    // Use the first video track only as there is no\n                    // mechanism to switch to other video tracks\n                    trackId = videoTrackIds[0];\n                    timescale = timescales[trackId]; // If an init segment has not been seen yet, hold onto segment\n                    // data until we have one.\n                    // the ISO-BMFF spec says that trackId can't be zero, but there's some broken content out there\n                } else if (trackId === null || !timescale) {\n                    segmentCache.push(segment);\n                    return null;\n                } // Now that a timescale and trackId is set, parse cached segments\n\n                while (segmentCache.length > 0) {\n                    var cachedSegment = segmentCache.shift();\n                    this.parse(cachedSegment, videoTrackIds, timescales);\n                }\n                parsedData = parseEmbeddedCaptions(segment, trackId, timescale);\n                if (parsedData && parsedData.logs) {\n                    parsedCaptions.logs = parsedCaptions.logs.concat(parsedData.logs);\n                }\n                if (parsedData === null || !parsedData.seiNals) {\n                    if (parsedCaptions.logs.length) {\n                        return {\n                            logs: parsedCaptions.logs,\n                            captions: [],\n                            captionStreams: []\n                        };\n                    }\n                    return null;\n                }\n                this.pushNals(parsedData.seiNals); // Force the parsed captions to be dispatched\n\n                this.flushStream();\n                return parsedCaptions;\n            };\n            /**\n             * Pushes SEI NALUs onto CaptionStream\n             * @param {Object[]} nals - A list of SEI nals parsed using `parseCaptionNals`\n             * Assumes that `parseCaptionNals` has been called first\n             * @see m2ts/caption-stream.js\n             **/\n\n            this.pushNals = function (nals) {\n                if (!this.isInitialized() || !nals || nals.length === 0) {\n                    return null;\n                }\n                nals.forEach(function (nal) {\n                    captionStream.push(nal);\n                });\n            };\n            /**\n             * Flushes underlying CaptionStream to dispatch processed, displayable captions\n             * @see m2ts/caption-stream.js\n             **/\n\n            this.flushStream = function () {\n                if (!this.isInitialized()) {\n                    return null;\n                }\n                if (!parsingPartial) {\n                    captionStream.flush();\n                } else {\n                    captionStream.partialFlush();\n                }\n            };\n            /**\n             * Reset caption buckets for new data\n             **/\n\n            this.clearParsedCaptions = function () {\n                parsedCaptions.captions = [];\n                parsedCaptions.captionStreams = {};\n                parsedCaptions.logs = [];\n            };\n            /**\n             * Resets underlying CaptionStream\n             * @see m2ts/caption-stream.js\n             **/\n\n            this.resetCaptionStream = function () {\n                if (!this.isInitialized()) {\n                    return null;\n                }\n                captionStream.reset();\n            };\n            /**\n             * Convenience method to clear all captions flushed from the\n             * CaptionStream and still being parsed\n             * @see m2ts/caption-stream.js\n             **/\n\n            this.clearAllCaptions = function () {\n                this.clearParsedCaptions();\n                this.resetCaptionStream();\n            };\n            /**\n             * Reset caption parser\n             **/\n\n            this.reset = function () {\n                segmentCache = [];\n                trackId = null;\n                timescale = null;\n                if (!parsedCaptions) {\n                    parsedCaptions = {\n                        captions: [],\n                        // CC1, CC2, CC3, CC4\n                        captionStreams: {},\n                        logs: []\n                    };\n                } else {\n                    this.clearParsedCaptions();\n                }\n                this.resetCaptionStream();\n            };\n            this.reset();\n        };\n        var captionParser = CaptionParser;\n        /**\n         * Returns the first string in the data array ending with a null char '\\0'\n         * @param {UInt8} data\n         * @returns the string with the null char\n         */\n\n        var uint8ToCString$1 = function (data) {\n            var index = 0;\n            var curChar = String.fromCharCode(data[index]);\n            var retString = '';\n            while (curChar !== '\\0') {\n                retString += curChar;\n                index++;\n                curChar = String.fromCharCode(data[index]);\n            } // Add nullChar\n\n            retString += curChar;\n            return retString;\n        };\n        var string = {\n            uint8ToCString: uint8ToCString$1\n        };\n        var uint8ToCString = string.uint8ToCString;\n        var getUint64$1 = numbers.getUint64;\n        /**\n         * Based on: ISO/IEC 23009 Section: 5.10.3.3\n         * References:\n         * https://dashif-documents.azurewebsites.net/Events/master/event.html#emsg-format\n         * https://aomediacodec.github.io/id3-emsg/\n         *\n         * Takes emsg box data as a uint8 array and returns a emsg box object\n         * @param {UInt8Array} boxData data from emsg box\n         * @returns A parsed emsg box object\n         */\n\n        var parseEmsgBox = function (boxData) {\n            // version + flags\n            var offset = 4;\n            var version = boxData[0];\n            var scheme_id_uri, value, timescale, presentation_time, presentation_time_delta, event_duration, id, message_data;\n            if (version === 0) {\n                scheme_id_uri = uint8ToCString(boxData.subarray(offset));\n                offset += scheme_id_uri.length;\n                value = uint8ToCString(boxData.subarray(offset));\n                offset += value.length;\n                var dv = new DataView(boxData.buffer);\n                timescale = dv.getUint32(offset);\n                offset += 4;\n                presentation_time_delta = dv.getUint32(offset);\n                offset += 4;\n                event_duration = dv.getUint32(offset);\n                offset += 4;\n                id = dv.getUint32(offset);\n                offset += 4;\n            } else if (version === 1) {\n                var dv = new DataView(boxData.buffer);\n                timescale = dv.getUint32(offset);\n                offset += 4;\n                presentation_time = getUint64$1(boxData.subarray(offset));\n                offset += 8;\n                event_duration = dv.getUint32(offset);\n                offset += 4;\n                id = dv.getUint32(offset);\n                offset += 4;\n                scheme_id_uri = uint8ToCString(boxData.subarray(offset));\n                offset += scheme_id_uri.length;\n                value = uint8ToCString(boxData.subarray(offset));\n                offset += value.length;\n            }\n            message_data = new Uint8Array(boxData.subarray(offset, boxData.byteLength));\n            var emsgBox = {\n                scheme_id_uri,\n                value,\n                // if timescale is undefined or 0 set to 1\n                timescale: timescale ? timescale : 1,\n                presentation_time,\n                presentation_time_delta,\n                event_duration,\n                id,\n                message_data\n            };\n            return isValidEmsgBox(version, emsgBox) ? emsgBox : undefined;\n        };\n        /**\n         * Scales a presentation time or time delta with an offset with a provided timescale\n         * @param {number} presentationTime\n         * @param {number} timescale\n         * @param {number} timeDelta\n         * @param {number} offset\n         * @returns the scaled time as a number\n         */\n\n        var scaleTime = function (presentationTime, timescale, timeDelta, offset) {\n            return presentationTime || presentationTime === 0 ? presentationTime / timescale : offset + timeDelta / timescale;\n        };\n        /**\n         * Checks the emsg box data for validity based on the version\n         * @param {number} version of the emsg box to validate\n         * @param {Object} emsg the emsg data to validate\n         * @returns if the box is valid as a boolean\n         */\n\n        var isValidEmsgBox = function (version, emsg) {\n            var hasScheme = emsg.scheme_id_uri !== '\\0';\n            var isValidV0Box = version === 0 && isDefined(emsg.presentation_time_delta) && hasScheme;\n            var isValidV1Box = version === 1 && isDefined(emsg.presentation_time) && hasScheme; // Only valid versions of emsg are 0 and 1\n\n            return !(version > 1) && isValidV0Box || isValidV1Box;\n        }; // Utility function to check if an object is defined\n\n        var isDefined = function (data) {\n            return data !== undefined || data !== null;\n        };\n        var emsg$1 = {\n            parseEmsgBox: parseEmsgBox,\n            scaleTime: scaleTime\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Utilities to detect basic properties and metadata about MP4s.\n         */\n\n        var toUnsigned = bin.toUnsigned;\n        var toHexString = bin.toHexString;\n        var findBox = findBox_1;\n        var parseType$1 = parseType_1;\n        var emsg = emsg$1;\n        var parseTfhd = parseTfhd$2;\n        var parseTrun = parseTrun$2;\n        var parseTfdt = parseTfdt$2;\n        var getUint64 = numbers.getUint64;\n        var timescale, startTime, compositionStartTime, getVideoTrackIds, getTracks, getTimescaleFromMediaHeader, getEmsgID3;\n        var window$1 = window_1;\n        var parseId3Frames = parseId3.parseId3Frames;\n        /**\n         * Parses an MP4 initialization segment and extracts the timescale\n         * values for any declared tracks. Timescale values indicate the\n         * number of clock ticks per second to assume for time-based values\n         * elsewhere in the MP4.\n         *\n         * To determine the start time of an MP4, you need two pieces of\n         * information: the timescale unit and the earliest base media decode\n         * time. Multiple timescales can be specified within an MP4 but the\n         * base media decode time is always expressed in the timescale from\n         * the media header box for the track:\n         * ```\n         * moov > trak > mdia > mdhd.timescale\n         * ```\n         * @param init {Uint8Array} the bytes of the init segment\n         * @return {object} a hash of track ids to timescale values or null if\n         * the init segment is malformed.\n         */\n\n        timescale = function (init) {\n            var result = {},\n                traks = findBox(init, ['moov', 'trak']); // mdhd timescale\n\n            return traks.reduce(function (result, trak) {\n                var tkhd, version, index, id, mdhd;\n                tkhd = findBox(trak, ['tkhd'])[0];\n                if (!tkhd) {\n                    return null;\n                }\n                version = tkhd[0];\n                index = version === 0 ? 12 : 20;\n                id = toUnsigned(tkhd[index] << 24 | tkhd[index + 1] << 16 | tkhd[index + 2] << 8 | tkhd[index + 3]);\n                mdhd = findBox(trak, ['mdia', 'mdhd'])[0];\n                if (!mdhd) {\n                    return null;\n                }\n                version = mdhd[0];\n                index = version === 0 ? 12 : 20;\n                result[id] = toUnsigned(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]);\n                return result;\n            }, result);\n        };\n        /**\n         * Determine the base media decode start time, in seconds, for an MP4\n         * fragment. If multiple fragments are specified, the earliest time is\n         * returned.\n         *\n         * The base media decode time can be parsed from track fragment\n         * metadata:\n         * ```\n         * moof > traf > tfdt.baseMediaDecodeTime\n         * ```\n         * It requires the timescale value from the mdhd to interpret.\n         *\n         * @param timescale {object} a hash of track ids to timescale values.\n         * @return {number} the earliest base media decode start time for the\n         * fragment, in seconds\n         */\n\n        startTime = function (timescale, fragment) {\n            var trafs; // we need info from two childrend of each track fragment box\n\n            trafs = findBox(fragment, ['moof', 'traf']); // determine the start times for each track\n\n            var lowestTime = trafs.reduce(function (acc, traf) {\n                var tfhd = findBox(traf, ['tfhd'])[0]; // get the track id from the tfhd\n\n                var id = toUnsigned(tfhd[4] << 24 | tfhd[5] << 16 | tfhd[6] << 8 | tfhd[7]); // assume a 90kHz clock if no timescale was specified\n\n                var scale = timescale[id] || 90e3; // get the base media decode time from the tfdt\n\n                var tfdt = findBox(traf, ['tfdt'])[0];\n                var dv = new DataView(tfdt.buffer, tfdt.byteOffset, tfdt.byteLength);\n                var baseTime; // version 1 is 64 bit\n\n                if (tfdt[0] === 1) {\n                    baseTime = getUint64(tfdt.subarray(4, 12));\n                } else {\n                    baseTime = dv.getUint32(4);\n                } // convert base time to seconds if it is a valid number.\n\n                let seconds;\n                if (typeof baseTime === 'bigint') {\n                    seconds = baseTime / window$1.BigInt(scale);\n                } else if (typeof baseTime === 'number' && !isNaN(baseTime)) {\n                    seconds = baseTime / scale;\n                }\n                if (seconds < Number.MAX_SAFE_INTEGER) {\n                    seconds = Number(seconds);\n                }\n                if (seconds < acc) {\n                    acc = seconds;\n                }\n                return acc;\n            }, Infinity);\n            return typeof lowestTime === 'bigint' || isFinite(lowestTime) ? lowestTime : 0;\n        };\n        /**\n         * Determine the composition start, in seconds, for an MP4\n         * fragment.\n         *\n         * The composition start time of a fragment can be calculated using the base\n         * media decode time, composition time offset, and timescale, as follows:\n         *\n         * compositionStartTime = (baseMediaDecodeTime + compositionTimeOffset) / timescale\n         *\n         * All of the aforementioned information is contained within a media fragment's\n         * `traf` box, except for timescale info, which comes from the initialization\n         * segment, so a track id (also contained within a `traf`) is also necessary to\n         * associate it with a timescale\n         *\n         *\n         * @param timescales {object} - a hash of track ids to timescale values.\n         * @param fragment {Unit8Array} - the bytes of a media segment\n         * @return {number} the composition start time for the fragment, in seconds\n         **/\n\n        compositionStartTime = function (timescales, fragment) {\n            var trafBoxes = findBox(fragment, ['moof', 'traf']);\n            var baseMediaDecodeTime = 0;\n            var compositionTimeOffset = 0;\n            var trackId;\n            if (trafBoxes && trafBoxes.length) {\n                // The spec states that track run samples contained within a `traf` box are contiguous, but\n                // it does not explicitly state whether the `traf` boxes themselves are contiguous.\n                // We will assume that they are, so we only need the first to calculate start time.\n                var tfhd = findBox(trafBoxes[0], ['tfhd'])[0];\n                var trun = findBox(trafBoxes[0], ['trun'])[0];\n                var tfdt = findBox(trafBoxes[0], ['tfdt'])[0];\n                if (tfhd) {\n                    var parsedTfhd = parseTfhd(tfhd);\n                    trackId = parsedTfhd.trackId;\n                }\n                if (tfdt) {\n                    var parsedTfdt = parseTfdt(tfdt);\n                    baseMediaDecodeTime = parsedTfdt.baseMediaDecodeTime;\n                }\n                if (trun) {\n                    var parsedTrun = parseTrun(trun);\n                    if (parsedTrun.samples && parsedTrun.samples.length) {\n                        compositionTimeOffset = parsedTrun.samples[0].compositionTimeOffset || 0;\n                    }\n                }\n            } // Get timescale for this specific track. Assume a 90kHz clock if no timescale was\n            // specified.\n\n            var timescale = timescales[trackId] || 90e3; // return the composition start time, in seconds\n\n            if (typeof baseMediaDecodeTime === 'bigint') {\n                compositionTimeOffset = window$1.BigInt(compositionTimeOffset);\n                timescale = window$1.BigInt(timescale);\n            }\n            var result = (baseMediaDecodeTime + compositionTimeOffset) / timescale;\n            if (typeof result === 'bigint' && result < Number.MAX_SAFE_INTEGER) {\n                result = Number(result);\n            }\n            return result;\n        };\n        /**\n         * Find the trackIds of the video tracks in this source.\n         * Found by parsing the Handler Reference and Track Header Boxes:\n         *   moov > trak > mdia > hdlr\n         *   moov > trak > tkhd\n         *\n         * @param {Uint8Array} init - The bytes of the init segment for this source\n         * @return {Number[]} A list of trackIds\n         *\n         * @see ISO-BMFF-12/2015, Section 8.4.3\n         **/\n\n        getVideoTrackIds = function (init) {\n            var traks = findBox(init, ['moov', 'trak']);\n            var videoTrackIds = [];\n            traks.forEach(function (trak) {\n                var hdlrs = findBox(trak, ['mdia', 'hdlr']);\n                var tkhds = findBox(trak, ['tkhd']);\n                hdlrs.forEach(function (hdlr, index) {\n                    var handlerType = parseType$1(hdlr.subarray(8, 12));\n                    var tkhd = tkhds[index];\n                    var view;\n                    var version;\n                    var trackId;\n                    if (handlerType === 'vide') {\n                        view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);\n                        version = view.getUint8(0);\n                        trackId = version === 0 ? view.getUint32(12) : view.getUint32(20);\n                        videoTrackIds.push(trackId);\n                    }\n                });\n            });\n            return videoTrackIds;\n        };\n        getTimescaleFromMediaHeader = function (mdhd) {\n            // mdhd is a FullBox, meaning it will have its own version as the first byte\n            var version = mdhd[0];\n            var index = version === 0 ? 12 : 20;\n            return toUnsigned(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]);\n        };\n        /**\n         * Get all the video, audio, and hint tracks from a non fragmented\n         * mp4 segment\n         */\n\n        getTracks = function (init) {\n            var traks = findBox(init, ['moov', 'trak']);\n            var tracks = [];\n            traks.forEach(function (trak) {\n                var track = {};\n                var tkhd = findBox(trak, ['tkhd'])[0];\n                var view, tkhdVersion; // id\n\n                if (tkhd) {\n                    view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);\n                    tkhdVersion = view.getUint8(0);\n                    track.id = tkhdVersion === 0 ? view.getUint32(12) : view.getUint32(20);\n                }\n                var hdlr = findBox(trak, ['mdia', 'hdlr'])[0]; // type\n\n                if (hdlr) {\n                    var type = parseType$1(hdlr.subarray(8, 12));\n                    if (type === 'vide') {\n                        track.type = 'video';\n                    } else if (type === 'soun') {\n                        track.type = 'audio';\n                    } else {\n                        track.type = type;\n                    }\n                } // codec\n\n                var stsd = findBox(trak, ['mdia', 'minf', 'stbl', 'stsd'])[0];\n                if (stsd) {\n                    var sampleDescriptions = stsd.subarray(8); // gives the codec type string\n\n                    track.codec = parseType$1(sampleDescriptions.subarray(4, 8));\n                    var codecBox = findBox(sampleDescriptions, [track.codec])[0];\n                    var codecConfig, codecConfigType;\n                    if (codecBox) {\n                        // https://tools.ietf.org/html/rfc6381#section-3.3\n                        if (/^[asm]vc[1-9]$/i.test(track.codec)) {\n                            // we don't need anything but the \"config\" parameter of the\n                            // avc1 codecBox\n                            codecConfig = codecBox.subarray(78);\n                            codecConfigType = parseType$1(codecConfig.subarray(4, 8));\n                            if (codecConfigType === 'avcC' && codecConfig.length > 11) {\n                                track.codec += '.'; // left padded with zeroes for single digit hex\n                                // profile idc\n\n                                track.codec += toHexString(codecConfig[9]); // the byte containing the constraint_set flags\n\n                                track.codec += toHexString(codecConfig[10]); // level idc\n\n                                track.codec += toHexString(codecConfig[11]);\n                            } else {\n                                // TODO: show a warning that we couldn't parse the codec\n                                // and are using the default\n                                track.codec = 'avc1.4d400d';\n                            }\n                        } else if (/^mp4[a,v]$/i.test(track.codec)) {\n                            // we do not need anything but the streamDescriptor of the mp4a codecBox\n                            codecConfig = codecBox.subarray(28);\n                            codecConfigType = parseType$1(codecConfig.subarray(4, 8));\n                            if (codecConfigType === 'esds' && codecConfig.length > 20 && codecConfig[19] !== 0) {\n                                track.codec += '.' + toHexString(codecConfig[19]); // this value is only a single digit\n\n                                track.codec += '.' + toHexString(codecConfig[20] >>> 2 & 0x3f).replace(/^0/, '');\n                            } else {\n                                // TODO: show a warning that we couldn't parse the codec\n                                // and are using the default\n                                track.codec = 'mp4a.40.2';\n                            }\n                        } else {\n                            // flac, opus, etc\n                            track.codec = track.codec.toLowerCase();\n                        }\n                    }\n                }\n                var mdhd = findBox(trak, ['mdia', 'mdhd'])[0];\n                if (mdhd) {\n                    track.timescale = getTimescaleFromMediaHeader(mdhd);\n                }\n                tracks.push(track);\n            });\n            return tracks;\n        };\n        /**\n         * Returns an array of emsg ID3 data from the provided segmentData.\n         * An offset can also be provided as the Latest Arrival Time to calculate\n         * the Event Start Time of v0 EMSG boxes.\n         * See: https://dashif-documents.azurewebsites.net/Events/master/event.html#Inband-event-timing\n         *\n         * @param {Uint8Array} segmentData the segment byte array.\n         * @param {number} offset the segment start time or Latest Arrival Time,\n         * @return {Object[]} an array of ID3 parsed from EMSG boxes\n         */\n\n        getEmsgID3 = function (segmentData, offset = 0) {\n            var emsgBoxes = findBox(segmentData, ['emsg']);\n            return emsgBoxes.map(data => {\n                var parsedBox = emsg.parseEmsgBox(new Uint8Array(data));\n                var parsedId3Frames = parseId3Frames(parsedBox.message_data);\n                return {\n                    cueTime: emsg.scaleTime(parsedBox.presentation_time, parsedBox.timescale, parsedBox.presentation_time_delta, offset),\n                    duration: emsg.scaleTime(parsedBox.event_duration, parsedBox.timescale),\n                    frames: parsedId3Frames\n                };\n            });\n        };\n        var probe$2 = {\n            // export mp4 inspector's findBox and parseType for backwards compatibility\n            findBox: findBox,\n            parseType: parseType$1,\n            timescale: timescale,\n            startTime: startTime,\n            compositionStartTime: compositionStartTime,\n            videoTrackIds: getVideoTrackIds,\n            tracks: getTracks,\n            getTimescaleFromMediaHeader: getTimescaleFromMediaHeader,\n            getEmsgID3: getEmsgID3\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Utilities to detect basic properties and metadata about TS Segments.\n         */\n\n        var StreamTypes$1 = streamTypes;\n        var parsePid = function (packet) {\n            var pid = packet[1] & 0x1f;\n            pid <<= 8;\n            pid |= packet[2];\n            return pid;\n        };\n        var parsePayloadUnitStartIndicator = function (packet) {\n            return !!(packet[1] & 0x40);\n        };\n        var parseAdaptionField = function (packet) {\n            var offset = 0; // if an adaption field is present, its length is specified by the\n            // fifth byte of the TS packet header. The adaptation field is\n            // used to add stuffing to PES packets that don't fill a complete\n            // TS packet, and to specify some forms of timing and control data\n            // that we do not currently use.\n\n            if ((packet[3] & 0x30) >>> 4 > 0x01) {\n                offset += packet[4] + 1;\n            }\n            return offset;\n        };\n        var parseType = function (packet, pmtPid) {\n            var pid = parsePid(packet);\n            if (pid === 0) {\n                return 'pat';\n            } else if (pid === pmtPid) {\n                return 'pmt';\n            } else if (pmtPid) {\n                return 'pes';\n            }\n            return null;\n        };\n        var parsePat = function (packet) {\n            var pusi = parsePayloadUnitStartIndicator(packet);\n            var offset = 4 + parseAdaptionField(packet);\n            if (pusi) {\n                offset += packet[offset] + 1;\n            }\n            return (packet[offset + 10] & 0x1f) << 8 | packet[offset + 11];\n        };\n        var parsePmt = function (packet) {\n            var programMapTable = {};\n            var pusi = parsePayloadUnitStartIndicator(packet);\n            var payloadOffset = 4 + parseAdaptionField(packet);\n            if (pusi) {\n                payloadOffset += packet[payloadOffset] + 1;\n            } // PMTs can be sent ahead of the time when they should actually\n            // take effect. We don't believe this should ever be the case\n            // for HLS but we'll ignore \"forward\" PMT declarations if we see\n            // them. Future PMT declarations have the current_next_indicator\n            // set to zero.\n\n            if (!(packet[payloadOffset + 5] & 0x01)) {\n                return;\n            }\n            var sectionLength, tableEnd, programInfoLength; // the mapping table ends at the end of the current section\n\n            sectionLength = (packet[payloadOffset + 1] & 0x0f) << 8 | packet[payloadOffset + 2];\n            tableEnd = 3 + sectionLength - 4; // to determine where the table is, we have to figure out how\n            // long the program info descriptors are\n\n            programInfoLength = (packet[payloadOffset + 10] & 0x0f) << 8 | packet[payloadOffset + 11]; // advance the offset to the first entry in the mapping table\n\n            var offset = 12 + programInfoLength;\n            while (offset < tableEnd) {\n                var i = payloadOffset + offset; // add an entry that maps the elementary_pid to the stream_type\n\n                programMapTable[(packet[i + 1] & 0x1F) << 8 | packet[i + 2]] = packet[i]; // move to the next table entry\n                // skip past the elementary stream descriptors, if present\n\n                offset += ((packet[i + 3] & 0x0F) << 8 | packet[i + 4]) + 5;\n            }\n            return programMapTable;\n        };\n        var parsePesType = function (packet, programMapTable) {\n            var pid = parsePid(packet);\n            var type = programMapTable[pid];\n            switch (type) {\n                case StreamTypes$1.H264_STREAM_TYPE:\n                    return 'video';\n                case StreamTypes$1.ADTS_STREAM_TYPE:\n                    return 'audio';\n                case StreamTypes$1.METADATA_STREAM_TYPE:\n                    return 'timed-metadata';\n                default:\n                    return null;\n            }\n        };\n        var parsePesTime = function (packet) {\n            var pusi = parsePayloadUnitStartIndicator(packet);\n            if (!pusi) {\n                return null;\n            }\n            var offset = 4 + parseAdaptionField(packet);\n            if (offset >= packet.byteLength) {\n                // From the H 222.0 MPEG-TS spec\n                // \"For transport stream packets carrying PES packets, stuffing is needed when there\n                //  is insufficient PES packet data to completely fill the transport stream packet\n                //  payload bytes. Stuffing is accomplished by defining an adaptation field longer than\n                //  the sum of the lengths of the data elements in it, so that the payload bytes\n                //  remaining after the adaptation field exactly accommodates the available PES packet\n                //  data.\"\n                //\n                // If the offset is >= the length of the packet, then the packet contains no data\n                // and instead is just adaption field stuffing bytes\n                return null;\n            }\n            var pes = null;\n            var ptsDtsFlags; // PES packets may be annotated with a PTS value, or a PTS value\n            // and a DTS value. Determine what combination of values is\n            // available to work with.\n\n            ptsDtsFlags = packet[offset + 7]; // PTS and DTS are normally stored as a 33-bit number.  Javascript\n            // performs all bitwise operations on 32-bit integers but javascript\n            // supports a much greater range (52-bits) of integer using standard\n            // mathematical operations.\n            // We construct a 31-bit value using bitwise operators over the 31\n            // most significant bits and then multiply by 4 (equal to a left-shift\n            // of 2) before we add the final 2 least significant bits of the\n            // timestamp (equal to an OR.)\n\n            if (ptsDtsFlags & 0xC0) {\n                pes = {}; // the PTS and DTS are not written out directly. For information\n                // on how they are encoded, see\n                // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html\n\n                pes.pts = (packet[offset + 9] & 0x0E) << 27 | (packet[offset + 10] & 0xFF) << 20 | (packet[offset + 11] & 0xFE) << 12 | (packet[offset + 12] & 0xFF) << 5 | (packet[offset + 13] & 0xFE) >>> 3;\n                pes.pts *= 4; // Left shift by 2\n\n                pes.pts += (packet[offset + 13] & 0x06) >>> 1; // OR by the two LSBs\n\n                pes.dts = pes.pts;\n                if (ptsDtsFlags & 0x40) {\n                    pes.dts = (packet[offset + 14] & 0x0E) << 27 | (packet[offset + 15] & 0xFF) << 20 | (packet[offset + 16] & 0xFE) << 12 | (packet[offset + 17] & 0xFF) << 5 | (packet[offset + 18] & 0xFE) >>> 3;\n                    pes.dts *= 4; // Left shift by 2\n\n                    pes.dts += (packet[offset + 18] & 0x06) >>> 1; // OR by the two LSBs\n                }\n            }\n\n            return pes;\n        };\n        var parseNalUnitType = function (type) {\n            switch (type) {\n                case 0x05:\n                    return 'slice_layer_without_partitioning_rbsp_idr';\n                case 0x06:\n                    return 'sei_rbsp';\n                case 0x07:\n                    return 'seq_parameter_set_rbsp';\n                case 0x08:\n                    return 'pic_parameter_set_rbsp';\n                case 0x09:\n                    return 'access_unit_delimiter_rbsp';\n                default:\n                    return null;\n            }\n        };\n        var videoPacketContainsKeyFrame = function (packet) {\n            var offset = 4 + parseAdaptionField(packet);\n            var frameBuffer = packet.subarray(offset);\n            var frameI = 0;\n            var frameSyncPoint = 0;\n            var foundKeyFrame = false;\n            var nalType; // advance the sync point to a NAL start, if necessary\n\n            for (; frameSyncPoint < frameBuffer.byteLength - 3; frameSyncPoint++) {\n                if (frameBuffer[frameSyncPoint + 2] === 1) {\n                    // the sync point is properly aligned\n                    frameI = frameSyncPoint + 5;\n                    break;\n                }\n            }\n            while (frameI < frameBuffer.byteLength) {\n                // look at the current byte to determine if we've hit the end of\n                // a NAL unit boundary\n                switch (frameBuffer[frameI]) {\n                    case 0:\n                        // skip past non-sync sequences\n                        if (frameBuffer[frameI - 1] !== 0) {\n                            frameI += 2;\n                            break;\n                        } else if (frameBuffer[frameI - 2] !== 0) {\n                            frameI++;\n                            break;\n                        }\n                        if (frameSyncPoint + 3 !== frameI - 2) {\n                            nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n                            if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n                                foundKeyFrame = true;\n                            }\n                        } // drop trailing zeroes\n\n                        do {\n                            frameI++;\n                        } while (frameBuffer[frameI] !== 1 && frameI < frameBuffer.length);\n                        frameSyncPoint = frameI - 2;\n                        frameI += 3;\n                        break;\n                    case 1:\n                        // skip past non-sync sequences\n                        if (frameBuffer[frameI - 1] !== 0 || frameBuffer[frameI - 2] !== 0) {\n                            frameI += 3;\n                            break;\n                        }\n                        nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n                        if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n                            foundKeyFrame = true;\n                        }\n                        frameSyncPoint = frameI - 2;\n                        frameI += 3;\n                        break;\n                    default:\n                        // the current byte isn't a one or zero, so it cannot be part\n                        // of a sync sequence\n                        frameI += 3;\n                        break;\n                }\n            }\n            frameBuffer = frameBuffer.subarray(frameSyncPoint);\n            frameI -= frameSyncPoint;\n            frameSyncPoint = 0; // parse the final nal\n\n            if (frameBuffer && frameBuffer.byteLength > 3) {\n                nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n                if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n                    foundKeyFrame = true;\n                }\n            }\n            return foundKeyFrame;\n        };\n        var probe$1 = {\n            parseType: parseType,\n            parsePat: parsePat,\n            parsePmt: parsePmt,\n            parsePayloadUnitStartIndicator: parsePayloadUnitStartIndicator,\n            parsePesType: parsePesType,\n            parsePesTime: parsePesTime,\n            videoPacketContainsKeyFrame: videoPacketContainsKeyFrame\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Parse mpeg2 transport stream packets to extract basic timing information\n         */\n\n        var StreamTypes = streamTypes;\n        var handleRollover = timestampRolloverStream.handleRollover;\n        var probe = {};\n        probe.ts = probe$1;\n        probe.aac = utils;\n        var ONE_SECOND_IN_TS = clock$2.ONE_SECOND_IN_TS;\n        var MP2T_PACKET_LENGTH = 188,\n            // bytes\n            SYNC_BYTE = 0x47;\n        /**\n         * walks through segment data looking for pat and pmt packets to parse out\n         * program map table information\n         */\n\n        var parsePsi_ = function (bytes, pmt) {\n            var startIndex = 0,\n                endIndex = MP2T_PACKET_LENGTH,\n                packet,\n                type;\n            while (endIndex < bytes.byteLength) {\n                // Look for a pair of start and end sync bytes in the data..\n                if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {\n                    // We found a packet\n                    packet = bytes.subarray(startIndex, endIndex);\n                    type = probe.ts.parseType(packet, pmt.pid);\n                    switch (type) {\n                        case 'pat':\n                            pmt.pid = probe.ts.parsePat(packet);\n                            break;\n                        case 'pmt':\n                            var table = probe.ts.parsePmt(packet);\n                            pmt.table = pmt.table || {};\n                            Object.keys(table).forEach(function (key) {\n                                pmt.table[key] = table[key];\n                            });\n                            break;\n                    }\n                    startIndex += MP2T_PACKET_LENGTH;\n                    endIndex += MP2T_PACKET_LENGTH;\n                    continue;\n                } // If we get here, we have somehow become de-synchronized and we need to step\n                // forward one byte at a time until we find a pair of sync bytes that denote\n                // a packet\n\n                startIndex++;\n                endIndex++;\n            }\n        };\n        /**\n         * walks through the segment data from the start and end to get timing information\n         * for the first and last audio pes packets\n         */\n\n        var parseAudioPes_ = function (bytes, pmt, result) {\n            var startIndex = 0,\n                endIndex = MP2T_PACKET_LENGTH,\n                packet,\n                type,\n                pesType,\n                pusi,\n                parsed;\n            var endLoop = false; // Start walking from start of segment to get first audio packet\n\n            while (endIndex <= bytes.byteLength) {\n                // Look for a pair of start and end sync bytes in the data..\n                if (bytes[startIndex] === SYNC_BYTE && (bytes[endIndex] === SYNC_BYTE || endIndex === bytes.byteLength)) {\n                    // We found a packet\n                    packet = bytes.subarray(startIndex, endIndex);\n                    type = probe.ts.parseType(packet, pmt.pid);\n                    switch (type) {\n                        case 'pes':\n                            pesType = probe.ts.parsePesType(packet, pmt.table);\n                            pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n                            if (pesType === 'audio' && pusi) {\n                                parsed = probe.ts.parsePesTime(packet);\n                                if (parsed) {\n                                    parsed.type = 'audio';\n                                    result.audio.push(parsed);\n                                    endLoop = true;\n                                }\n                            }\n                            break;\n                    }\n                    if (endLoop) {\n                        break;\n                    }\n                    startIndex += MP2T_PACKET_LENGTH;\n                    endIndex += MP2T_PACKET_LENGTH;\n                    continue;\n                } // If we get here, we have somehow become de-synchronized and we need to step\n                // forward one byte at a time until we find a pair of sync bytes that denote\n                // a packet\n\n                startIndex++;\n                endIndex++;\n            } // Start walking from end of segment to get last audio packet\n\n            endIndex = bytes.byteLength;\n            startIndex = endIndex - MP2T_PACKET_LENGTH;\n            endLoop = false;\n            while (startIndex >= 0) {\n                // Look for a pair of start and end sync bytes in the data..\n                if (bytes[startIndex] === SYNC_BYTE && (bytes[endIndex] === SYNC_BYTE || endIndex === bytes.byteLength)) {\n                    // We found a packet\n                    packet = bytes.subarray(startIndex, endIndex);\n                    type = probe.ts.parseType(packet, pmt.pid);\n                    switch (type) {\n                        case 'pes':\n                            pesType = probe.ts.parsePesType(packet, pmt.table);\n                            pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n                            if (pesType === 'audio' && pusi) {\n                                parsed = probe.ts.parsePesTime(packet);\n                                if (parsed) {\n                                    parsed.type = 'audio';\n                                    result.audio.push(parsed);\n                                    endLoop = true;\n                                }\n                            }\n                            break;\n                    }\n                    if (endLoop) {\n                        break;\n                    }\n                    startIndex -= MP2T_PACKET_LENGTH;\n                    endIndex -= MP2T_PACKET_LENGTH;\n                    continue;\n                } // If we get here, we have somehow become de-synchronized and we need to step\n                // forward one byte at a time until we find a pair of sync bytes that denote\n                // a packet\n\n                startIndex--;\n                endIndex--;\n            }\n        };\n        /**\n         * walks through the segment data from the start and end to get timing information\n         * for the first and last video pes packets as well as timing information for the first\n         * key frame.\n         */\n\n        var parseVideoPes_ = function (bytes, pmt, result) {\n            var startIndex = 0,\n                endIndex = MP2T_PACKET_LENGTH,\n                packet,\n                type,\n                pesType,\n                pusi,\n                parsed,\n                frame,\n                i,\n                pes;\n            var endLoop = false;\n            var currentFrame = {\n                data: [],\n                size: 0\n            }; // Start walking from start of segment to get first video packet\n\n            while (endIndex < bytes.byteLength) {\n                // Look for a pair of start and end sync bytes in the data..\n                if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {\n                    // We found a packet\n                    packet = bytes.subarray(startIndex, endIndex);\n                    type = probe.ts.parseType(packet, pmt.pid);\n                    switch (type) {\n                        case 'pes':\n                            pesType = probe.ts.parsePesType(packet, pmt.table);\n                            pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n                            if (pesType === 'video') {\n                                if (pusi && !endLoop) {\n                                    parsed = probe.ts.parsePesTime(packet);\n                                    if (parsed) {\n                                        parsed.type = 'video';\n                                        result.video.push(parsed);\n                                        endLoop = true;\n                                    }\n                                }\n                                if (!result.firstKeyFrame) {\n                                    if (pusi) {\n                                        if (currentFrame.size !== 0) {\n                                            frame = new Uint8Array(currentFrame.size);\n                                            i = 0;\n                                            while (currentFrame.data.length) {\n                                                pes = currentFrame.data.shift();\n                                                frame.set(pes, i);\n                                                i += pes.byteLength;\n                                            }\n                                            if (probe.ts.videoPacketContainsKeyFrame(frame)) {\n                                                var firstKeyFrame = probe.ts.parsePesTime(frame); // PTS/DTS may not be available. Simply *not* setting\n                                                // the keyframe seems to work fine with HLS playback\n                                                // and definitely preferable to a crash with TypeError...\n\n                                                if (firstKeyFrame) {\n                                                    result.firstKeyFrame = firstKeyFrame;\n                                                    result.firstKeyFrame.type = 'video';\n                                                } else {\n                                                    // eslint-disable-next-line\n                                                    console.warn('Failed to extract PTS/DTS from PES at first keyframe. ' + 'This could be an unusual TS segment, or else mux.js did not ' + 'parse your TS segment correctly. If you know your TS ' + 'segments do contain PTS/DTS on keyframes please file a bug ' + 'report! You can try ffprobe to double check for yourself.');\n                                                }\n                                            }\n                                            currentFrame.size = 0;\n                                        }\n                                    }\n                                    currentFrame.data.push(packet);\n                                    currentFrame.size += packet.byteLength;\n                                }\n                            }\n                            break;\n                    }\n                    if (endLoop && result.firstKeyFrame) {\n                        break;\n                    }\n                    startIndex += MP2T_PACKET_LENGTH;\n                    endIndex += MP2T_PACKET_LENGTH;\n                    continue;\n                } // If we get here, we have somehow become de-synchronized and we need to step\n                // forward one byte at a time until we find a pair of sync bytes that denote\n                // a packet\n\n                startIndex++;\n                endIndex++;\n            } // Start walking from end of segment to get last video packet\n\n            endIndex = bytes.byteLength;\n            startIndex = endIndex - MP2T_PACKET_LENGTH;\n            endLoop = false;\n            while (startIndex >= 0) {\n                // Look for a pair of start and end sync bytes in the data..\n                if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {\n                    // We found a packet\n                    packet = bytes.subarray(startIndex, endIndex);\n                    type = probe.ts.parseType(packet, pmt.pid);\n                    switch (type) {\n                        case 'pes':\n                            pesType = probe.ts.parsePesType(packet, pmt.table);\n                            pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n                            if (pesType === 'video' && pusi) {\n                                parsed = probe.ts.parsePesTime(packet);\n                                if (parsed) {\n                                    parsed.type = 'video';\n                                    result.video.push(parsed);\n                                    endLoop = true;\n                                }\n                            }\n                            break;\n                    }\n                    if (endLoop) {\n                        break;\n                    }\n                    startIndex -= MP2T_PACKET_LENGTH;\n                    endIndex -= MP2T_PACKET_LENGTH;\n                    continue;\n                } // If we get here, we have somehow become de-synchronized and we need to step\n                // forward one byte at a time until we find a pair of sync bytes that denote\n                // a packet\n\n                startIndex--;\n                endIndex--;\n            }\n        };\n        /**\n         * Adjusts the timestamp information for the segment to account for\n         * rollover and convert to seconds based on pes packet timescale (90khz clock)\n         */\n\n        var adjustTimestamp_ = function (segmentInfo, baseTimestamp) {\n            if (segmentInfo.audio && segmentInfo.audio.length) {\n                var audioBaseTimestamp = baseTimestamp;\n                if (typeof audioBaseTimestamp === 'undefined' || isNaN(audioBaseTimestamp)) {\n                    audioBaseTimestamp = segmentInfo.audio[0].dts;\n                }\n                segmentInfo.audio.forEach(function (info) {\n                    info.dts = handleRollover(info.dts, audioBaseTimestamp);\n                    info.pts = handleRollover(info.pts, audioBaseTimestamp); // time in seconds\n\n                    info.dtsTime = info.dts / ONE_SECOND_IN_TS;\n                    info.ptsTime = info.pts / ONE_SECOND_IN_TS;\n                });\n            }\n            if (segmentInfo.video && segmentInfo.video.length) {\n                var videoBaseTimestamp = baseTimestamp;\n                if (typeof videoBaseTimestamp === 'undefined' || isNaN(videoBaseTimestamp)) {\n                    videoBaseTimestamp = segmentInfo.video[0].dts;\n                }\n                segmentInfo.video.forEach(function (info) {\n                    info.dts = handleRollover(info.dts, videoBaseTimestamp);\n                    info.pts = handleRollover(info.pts, videoBaseTimestamp); // time in seconds\n\n                    info.dtsTime = info.dts / ONE_SECOND_IN_TS;\n                    info.ptsTime = info.pts / ONE_SECOND_IN_TS;\n                });\n                if (segmentInfo.firstKeyFrame) {\n                    var frame = segmentInfo.firstKeyFrame;\n                    frame.dts = handleRollover(frame.dts, videoBaseTimestamp);\n                    frame.pts = handleRollover(frame.pts, videoBaseTimestamp); // time in seconds\n\n                    frame.dtsTime = frame.dts / ONE_SECOND_IN_TS;\n                    frame.ptsTime = frame.pts / ONE_SECOND_IN_TS;\n                }\n            }\n        };\n        /**\n         * inspects the aac data stream for start and end time information\n         */\n\n        var inspectAac_ = function (bytes) {\n            var endLoop = false,\n                audioCount = 0,\n                sampleRate = null,\n                timestamp = null,\n                frameSize = 0,\n                byteIndex = 0,\n                packet;\n            while (bytes.length - byteIndex >= 3) {\n                var type = probe.aac.parseType(bytes, byteIndex);\n                switch (type) {\n                    case 'timed-metadata':\n                        // Exit early because we don't have enough to parse\n                        // the ID3 tag header\n                        if (bytes.length - byteIndex < 10) {\n                            endLoop = true;\n                            break;\n                        }\n                        frameSize = probe.aac.parseId3TagSize(bytes, byteIndex); // Exit early if we don't have enough in the buffer\n                        // to emit a full packet\n\n                        if (frameSize > bytes.length) {\n                            endLoop = true;\n                            break;\n                        }\n                        if (timestamp === null) {\n                            packet = bytes.subarray(byteIndex, byteIndex + frameSize);\n                            timestamp = probe.aac.parseAacTimestamp(packet);\n                        }\n                        byteIndex += frameSize;\n                        break;\n                    case 'audio':\n                        // Exit early because we don't have enough to parse\n                        // the ADTS frame header\n                        if (bytes.length - byteIndex < 7) {\n                            endLoop = true;\n                            break;\n                        }\n                        frameSize = probe.aac.parseAdtsSize(bytes, byteIndex); // Exit early if we don't have enough in the buffer\n                        // to emit a full packet\n\n                        if (frameSize > bytes.length) {\n                            endLoop = true;\n                            break;\n                        }\n                        if (sampleRate === null) {\n                            packet = bytes.subarray(byteIndex, byteIndex + frameSize);\n                            sampleRate = probe.aac.parseSampleRate(packet);\n                        }\n                        audioCount++;\n                        byteIndex += frameSize;\n                        break;\n                    default:\n                        byteIndex++;\n                        break;\n                }\n                if (endLoop) {\n                    return null;\n                }\n            }\n            if (sampleRate === null || timestamp === null) {\n                return null;\n            }\n            var audioTimescale = ONE_SECOND_IN_TS / sampleRate;\n            var result = {\n                audio: [{\n                    type: 'audio',\n                    dts: timestamp,\n                    pts: timestamp\n                }, {\n                    type: 'audio',\n                    dts: timestamp + audioCount * 1024 * audioTimescale,\n                    pts: timestamp + audioCount * 1024 * audioTimescale\n                }]\n            };\n            return result;\n        };\n        /**\n         * inspects the transport stream segment data for start and end time information\n         * of the audio and video tracks (when present) as well as the first key frame's\n         * start time.\n         */\n\n        var inspectTs_ = function (bytes) {\n            var pmt = {\n                pid: null,\n                table: null\n            };\n            var result = {};\n            parsePsi_(bytes, pmt);\n            for (var pid in pmt.table) {\n                if (pmt.table.hasOwnProperty(pid)) {\n                    var type = pmt.table[pid];\n                    switch (type) {\n                        case StreamTypes.H264_STREAM_TYPE:\n                            result.video = [];\n                            parseVideoPes_(bytes, pmt, result);\n                            if (result.video.length === 0) {\n                                delete result.video;\n                            }\n                            break;\n                        case StreamTypes.ADTS_STREAM_TYPE:\n                            result.audio = [];\n                            parseAudioPes_(bytes, pmt, result);\n                            if (result.audio.length === 0) {\n                                delete result.audio;\n                            }\n                            break;\n                    }\n                }\n            }\n            return result;\n        };\n        /**\n         * Inspects segment byte data and returns an object with start and end timing information\n         *\n         * @param {Uint8Array} bytes The segment byte data\n         * @param {Number} baseTimestamp Relative reference timestamp used when adjusting frame\n         *  timestamps for rollover. This value must be in 90khz clock.\n         * @return {Object} Object containing start and end frame timing info of segment.\n         */\n\n        var inspect = function (bytes, baseTimestamp) {\n            var isAacData = probe.aac.isLikelyAacData(bytes);\n            var result;\n            if (isAacData) {\n                result = inspectAac_(bytes);\n            } else {\n                result = inspectTs_(bytes);\n            }\n            if (!result || !result.audio && !result.video) {\n                return null;\n            }\n            adjustTimestamp_(result, baseTimestamp);\n            return result;\n        };\n        var tsInspector = {\n            inspect: inspect,\n            parseAudioPes_: parseAudioPes_\n        };\n        /* global self */\n\n        /**\n         * Re-emits transmuxer events by converting them into messages to the\n         * world outside the worker.\n         *\n         * @param {Object} transmuxer the transmuxer to wire events on\n         * @private\n         */\n\n        const wireTransmuxerEvents = function (self, transmuxer) {\n            transmuxer.on('data', function (segment) {\n                // transfer ownership of the underlying ArrayBuffer\n                // instead of doing a copy to save memory\n                // ArrayBuffers are transferable but generic TypedArrays are not\n                // @link https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers#Passing_data_by_transferring_ownership_(transferable_objects)\n                const initArray = segment.initSegment;\n                segment.initSegment = {\n                    data: initArray.buffer,\n                    byteOffset: initArray.byteOffset,\n                    byteLength: initArray.byteLength\n                };\n                const typedArray = segment.data;\n                segment.data = typedArray.buffer;\n                self.postMessage({\n                    action: 'data',\n                    segment,\n                    byteOffset: typedArray.byteOffset,\n                    byteLength: typedArray.byteLength\n                }, [segment.data]);\n            });\n            transmuxer.on('done', function (data) {\n                self.postMessage({\n                    action: 'done'\n                });\n            });\n            transmuxer.on('gopInfo', function (gopInfo) {\n                self.postMessage({\n                    action: 'gopInfo',\n                    gopInfo\n                });\n            });\n            transmuxer.on('videoSegmentTimingInfo', function (timingInfo) {\n                const videoSegmentTimingInfo = {\n                    start: {\n                        decode: clock$2.videoTsToSeconds(timingInfo.start.dts),\n                        presentation: clock$2.videoTsToSeconds(timingInfo.start.pts)\n                    },\n                    end: {\n                        decode: clock$2.videoTsToSeconds(timingInfo.end.dts),\n                        presentation: clock$2.videoTsToSeconds(timingInfo.end.pts)\n                    },\n                    baseMediaDecodeTime: clock$2.videoTsToSeconds(timingInfo.baseMediaDecodeTime)\n                };\n                if (timingInfo.prependedContentDuration) {\n                    videoSegmentTimingInfo.prependedContentDuration = clock$2.videoTsToSeconds(timingInfo.prependedContentDuration);\n                }\n                self.postMessage({\n                    action: 'videoSegmentTimingInfo',\n                    videoSegmentTimingInfo\n                });\n            });\n            transmuxer.on('audioSegmentTimingInfo', function (timingInfo) {\n                // Note that all times for [audio/video]SegmentTimingInfo events are in video clock\n                const audioSegmentTimingInfo = {\n                    start: {\n                        decode: clock$2.videoTsToSeconds(timingInfo.start.dts),\n                        presentation: clock$2.videoTsToSeconds(timingInfo.start.pts)\n                    },\n                    end: {\n                        decode: clock$2.videoTsToSeconds(timingInfo.end.dts),\n                        presentation: clock$2.videoTsToSeconds(timingInfo.end.pts)\n                    },\n                    baseMediaDecodeTime: clock$2.videoTsToSeconds(timingInfo.baseMediaDecodeTime)\n                };\n                if (timingInfo.prependedContentDuration) {\n                    audioSegmentTimingInfo.prependedContentDuration = clock$2.videoTsToSeconds(timingInfo.prependedContentDuration);\n                }\n                self.postMessage({\n                    action: 'audioSegmentTimingInfo',\n                    audioSegmentTimingInfo\n                });\n            });\n            transmuxer.on('id3Frame', function (id3Frame) {\n                self.postMessage({\n                    action: 'id3Frame',\n                    id3Frame\n                });\n            });\n            transmuxer.on('caption', function (caption) {\n                self.postMessage({\n                    action: 'caption',\n                    caption\n                });\n            });\n            transmuxer.on('trackinfo', function (trackInfo) {\n                self.postMessage({\n                    action: 'trackinfo',\n                    trackInfo\n                });\n            });\n            transmuxer.on('audioTimingInfo', function (audioTimingInfo) {\n                // convert to video TS since we prioritize video time over audio\n                self.postMessage({\n                    action: 'audioTimingInfo',\n                    audioTimingInfo: {\n                        start: clock$2.videoTsToSeconds(audioTimingInfo.start),\n                        end: clock$2.videoTsToSeconds(audioTimingInfo.end)\n                    }\n                });\n            });\n            transmuxer.on('videoTimingInfo', function (videoTimingInfo) {\n                self.postMessage({\n                    action: 'videoTimingInfo',\n                    videoTimingInfo: {\n                        start: clock$2.videoTsToSeconds(videoTimingInfo.start),\n                        end: clock$2.videoTsToSeconds(videoTimingInfo.end)\n                    }\n                });\n            });\n            transmuxer.on('log', function (log) {\n                self.postMessage({\n                    action: 'log',\n                    log\n                });\n            });\n        };\n        /**\n         * All incoming messages route through this hash. If no function exists\n         * to handle an incoming message, then we ignore the message.\n         *\n         * @class MessageHandlers\n         * @param {Object} options the options to initialize with\n         */\n\n        class MessageHandlers {\n            constructor(self, options) {\n                this.options = options || {};\n                this.self = self;\n                this.init();\n            }\n            /**\n             * initialize our web worker and wire all the events.\n             */\n\n            init() {\n                if (this.transmuxer) {\n                    this.transmuxer.dispose();\n                }\n                this.transmuxer = new transmuxer.Transmuxer(this.options);\n                wireTransmuxerEvents(this.self, this.transmuxer);\n            }\n            pushMp4Captions(data) {\n                if (!this.captionParser) {\n                    this.captionParser = new captionParser();\n                    this.captionParser.init();\n                }\n                const segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);\n                const parsed = this.captionParser.parse(segment, data.trackIds, data.timescales);\n                this.self.postMessage({\n                    action: 'mp4Captions',\n                    captions: parsed && parsed.captions || [],\n                    logs: parsed && parsed.logs || [],\n                    data: segment.buffer\n                }, [segment.buffer]);\n            }\n            probeMp4StartTime({\n                                  timescales,\n                                  data\n                              }) {\n                const startTime = probe$2.startTime(timescales, data);\n                this.self.postMessage({\n                    action: 'probeMp4StartTime',\n                    startTime,\n                    data\n                }, [data.buffer]);\n            }\n            probeMp4Tracks({\n                               data\n                           }) {\n                const tracks = probe$2.tracks(data);\n                this.self.postMessage({\n                    action: 'probeMp4Tracks',\n                    tracks,\n                    data\n                }, [data.buffer]);\n            }\n            /**\n             * Probe an mpeg2-ts segment to determine the start time of the segment in it's\n             * internal \"media time,\" as well as whether it contains video and/or audio.\n             *\n             * @private\n             * @param {Uint8Array} bytes - segment bytes\n             * @param {number} baseStartTime\n             *        Relative reference timestamp used when adjusting frame timestamps for rollover.\n             *        This value should be in seconds, as it's converted to a 90khz clock within the\n             *        function body.\n             * @return {Object} The start time of the current segment in \"media time\" as well as\n             *                  whether it contains video and/or audio\n             */\n\n            probeTs({\n                        data,\n                        baseStartTime\n                    }) {\n                const tsStartTime = typeof baseStartTime === 'number' && !isNaN(baseStartTime) ? baseStartTime * clock$2.ONE_SECOND_IN_TS : void 0;\n                const timeInfo = tsInspector.inspect(data, tsStartTime);\n                let result = null;\n                if (timeInfo) {\n                    result = {\n                        // each type's time info comes back as an array of 2 times, start and end\n                        hasVideo: timeInfo.video && timeInfo.video.length === 2 || false,\n                        hasAudio: timeInfo.audio && timeInfo.audio.length === 2 || false\n                    };\n                    if (result.hasVideo) {\n                        result.videoStart = timeInfo.video[0].ptsTime;\n                    }\n                    if (result.hasAudio) {\n                        result.audioStart = timeInfo.audio[0].ptsTime;\n                    }\n                }\n                this.self.postMessage({\n                    action: 'probeTs',\n                    result,\n                    data\n                }, [data.buffer]);\n            }\n            clearAllMp4Captions() {\n                if (this.captionParser) {\n                    this.captionParser.clearAllCaptions();\n                }\n            }\n            clearParsedMp4Captions() {\n                if (this.captionParser) {\n                    this.captionParser.clearParsedCaptions();\n                }\n            }\n            /**\n             * Adds data (a ts segment) to the start of the transmuxer pipeline for\n             * processing.\n             *\n             * @param {ArrayBuffer} data data to push into the muxer\n             */\n\n            push(data) {\n                // Cast array buffer to correct type for transmuxer\n                const segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);\n                this.transmuxer.push(segment);\n            }\n            /**\n             * Recreate the transmuxer so that the next segment added via `push`\n             * start with a fresh transmuxer.\n             */\n\n            reset() {\n                this.transmuxer.reset();\n            }\n            /**\n             * Set the value that will be used as the `baseMediaDecodeTime` time for the\n             * next segment pushed in. Subsequent segments will have their `baseMediaDecodeTime`\n             * set relative to the first based on the PTS values.\n             *\n             * @param {Object} data used to set the timestamp offset in the muxer\n             */\n\n            setTimestampOffset(data) {\n                const timestampOffset = data.timestampOffset || 0;\n                this.transmuxer.setBaseMediaDecodeTime(Math.round(clock$2.secondsToVideoTs(timestampOffset)));\n            }\n            setAudioAppendStart(data) {\n                this.transmuxer.setAudioAppendStart(Math.ceil(clock$2.secondsToVideoTs(data.appendStart)));\n            }\n            setRemux(data) {\n                this.transmuxer.setRemux(data.remux);\n            }\n            /**\n             * Forces the pipeline to finish processing the last segment and emit it's\n             * results.\n             *\n             * @param {Object} data event data, not really used\n             */\n\n            flush(data) {\n                this.transmuxer.flush(); // transmuxed done action is fired after both audio/video pipelines are flushed\n\n                self.postMessage({\n                    action: 'done',\n                    type: 'transmuxed'\n                });\n            }\n            endTimeline() {\n                this.transmuxer.endTimeline(); // transmuxed endedtimeline action is fired after both audio/video pipelines end their\n                // timelines\n\n                self.postMessage({\n                    action: 'endedtimeline',\n                    type: 'transmuxed'\n                });\n            }\n            alignGopsWith(data) {\n                this.transmuxer.alignGopsWith(data.gopsToAlignWith.slice());\n            }\n        }\n        /**\n         * Our web worker interface so that things can talk to mux.js\n         * that will be running in a web worker. the scope is passed to this by\n         * webworkify.\n         *\n         * @param {Object} self the scope for the web worker\n         */\n\n        self.onmessage = function (event) {\n            if (event.data.action === 'init' && event.data.options) {\n                this.messageHandlers = new MessageHandlers(self, event.data.options);\n                return;\n            }\n            if (!this.messageHandlers) {\n                this.messageHandlers = new MessageHandlers(self);\n            }\n            if (event.data && event.data.action && event.data.action !== 'init') {\n                if (this.messageHandlers[event.data.action]) {\n                    this.messageHandlers[event.data.action](event.data);\n                }\n            }\n        };\n    }));\n    var TransmuxWorker = factory(workerCode$1);\n    /* rollup-plugin-worker-factory end for worker!/Users/ddashkevich/projects/http-streaming/src/transmuxer-worker.js */\n\n    const handleData_ = (event, transmuxedData, callback) => {\n        const {\n            type,\n            initSegment,\n            captions,\n            captionStreams,\n            metadata,\n            videoFrameDtsTime,\n            videoFramePtsTime\n        } = event.data.segment;\n        transmuxedData.buffer.push({\n            captions,\n            captionStreams,\n            metadata\n        });\n        const boxes = event.data.segment.boxes || {\n            data: event.data.segment.data\n        };\n        const result = {\n            type,\n            // cast ArrayBuffer to TypedArray\n            data: new Uint8Array(boxes.data, boxes.data.byteOffset, boxes.data.byteLength),\n            initSegment: new Uint8Array(initSegment.data, initSegment.byteOffset, initSegment.byteLength)\n        };\n        if (typeof videoFrameDtsTime !== 'undefined') {\n            result.videoFrameDtsTime = videoFrameDtsTime;\n        }\n        if (typeof videoFramePtsTime !== 'undefined') {\n            result.videoFramePtsTime = videoFramePtsTime;\n        }\n        callback(result);\n    };\n    const handleDone_ = ({\n                             transmuxedData,\n                             callback\n                         }) => {\n        // Previously we only returned data on data events,\n        // not on done events. Clear out the buffer to keep that consistent.\n        transmuxedData.buffer = []; // all buffers should have been flushed from the muxer, so start processing anything we\n        // have received\n\n        callback(transmuxedData);\n    };\n    const handleGopInfo_ = (event, transmuxedData) => {\n        transmuxedData.gopInfo = event.data.gopInfo;\n    };\n    const processTransmux = options => {\n        const {\n            transmuxer,\n            bytes,\n            audioAppendStart,\n            gopsToAlignWith,\n            remux,\n            onData,\n            onTrackInfo,\n            onAudioTimingInfo,\n            onVideoTimingInfo,\n            onVideoSegmentTimingInfo,\n            onAudioSegmentTimingInfo,\n            onId3,\n            onCaptions,\n            onDone,\n            onEndedTimeline,\n            onTransmuxerLog,\n            isEndOfTimeline\n        } = options;\n        const transmuxedData = {\n            buffer: []\n        };\n        let waitForEndedTimelineEvent = isEndOfTimeline;\n        const handleMessage = event => {\n            if (transmuxer.currentTransmux !== options) {\n                // disposed\n                return;\n            }\n            if (event.data.action === 'data') {\n                handleData_(event, transmuxedData, onData);\n            }\n            if (event.data.action === 'trackinfo') {\n                onTrackInfo(event.data.trackInfo);\n            }\n            if (event.data.action === 'gopInfo') {\n                handleGopInfo_(event, transmuxedData);\n            }\n            if (event.data.action === 'audioTimingInfo') {\n                onAudioTimingInfo(event.data.audioTimingInfo);\n            }\n            if (event.data.action === 'videoTimingInfo') {\n                onVideoTimingInfo(event.data.videoTimingInfo);\n            }\n            if (event.data.action === 'videoSegmentTimingInfo') {\n                onVideoSegmentTimingInfo(event.data.videoSegmentTimingInfo);\n            }\n            if (event.data.action === 'audioSegmentTimingInfo') {\n                onAudioSegmentTimingInfo(event.data.audioSegmentTimingInfo);\n            }\n            if (event.data.action === 'id3Frame') {\n                onId3([event.data.id3Frame], event.data.id3Frame.dispatchType);\n            }\n            if (event.data.action === 'caption') {\n                onCaptions(event.data.caption);\n            }\n            if (event.data.action === 'endedtimeline') {\n                waitForEndedTimelineEvent = false;\n                onEndedTimeline();\n            }\n            if (event.data.action === 'log') {\n                onTransmuxerLog(event.data.log);\n            } // wait for the transmuxed event since we may have audio and video\n\n            if (event.data.type !== 'transmuxed') {\n                return;\n            } // If the \"endedtimeline\" event has not yet fired, and this segment represents the end\n            // of a timeline, that means there may still be data events before the segment\n            // processing can be considerred complete. In that case, the final event should be\n            // an \"endedtimeline\" event with the type \"transmuxed.\"\n\n            if (waitForEndedTimelineEvent) {\n                return;\n            }\n            transmuxer.onmessage = null;\n            handleDone_({\n                transmuxedData,\n                callback: onDone\n            });\n            /* eslint-disable no-use-before-define */\n\n            dequeue(transmuxer);\n            /* eslint-enable */\n        };\n\n        transmuxer.onmessage = handleMessage;\n        if (audioAppendStart) {\n            transmuxer.postMessage({\n                action: 'setAudioAppendStart',\n                appendStart: audioAppendStart\n            });\n        } // allow empty arrays to be passed to clear out GOPs\n\n        if (Array.isArray(gopsToAlignWith)) {\n            transmuxer.postMessage({\n                action: 'alignGopsWith',\n                gopsToAlignWith\n            });\n        }\n        if (typeof remux !== 'undefined') {\n            transmuxer.postMessage({\n                action: 'setRemux',\n                remux\n            });\n        }\n        if (bytes.byteLength) {\n            const buffer = bytes instanceof ArrayBuffer ? bytes : bytes.buffer;\n            const byteOffset = bytes instanceof ArrayBuffer ? 0 : bytes.byteOffset;\n            transmuxer.postMessage({\n                action: 'push',\n                // Send the typed-array of data as an ArrayBuffer so that\n                // it can be sent as a \"Transferable\" and avoid the costly\n                // memory copy\n                data: buffer,\n                // To recreate the original typed-array, we need information\n                // about what portion of the ArrayBuffer it was a view into\n                byteOffset,\n                byteLength: bytes.byteLength\n            }, [buffer]);\n        }\n        if (isEndOfTimeline) {\n            transmuxer.postMessage({\n                action: 'endTimeline'\n            });\n        } // even if we didn't push any bytes, we have to make sure we flush in case we reached\n        // the end of the segment\n\n        transmuxer.postMessage({\n            action: 'flush'\n        });\n    };\n    const dequeue = transmuxer => {\n        transmuxer.currentTransmux = null;\n        if (transmuxer.transmuxQueue.length) {\n            transmuxer.currentTransmux = transmuxer.transmuxQueue.shift();\n            if (typeof transmuxer.currentTransmux === 'function') {\n                transmuxer.currentTransmux();\n            } else {\n                processTransmux(transmuxer.currentTransmux);\n            }\n        }\n    };\n    const processAction = (transmuxer, action) => {\n        transmuxer.postMessage({\n            action\n        });\n        dequeue(transmuxer);\n    };\n    const enqueueAction = (action, transmuxer) => {\n        if (!transmuxer.currentTransmux) {\n            transmuxer.currentTransmux = action;\n            processAction(transmuxer, action);\n            return;\n        }\n        transmuxer.transmuxQueue.push(processAction.bind(null, transmuxer, action));\n    };\n    const reset = transmuxer => {\n        enqueueAction('reset', transmuxer);\n    };\n    const endTimeline = transmuxer => {\n        enqueueAction('endTimeline', transmuxer);\n    };\n    const transmux = options => {\n        if (!options.transmuxer.currentTransmux) {\n            options.transmuxer.currentTransmux = options;\n            processTransmux(options);\n            return;\n        }\n        options.transmuxer.transmuxQueue.push(options);\n    };\n    const createTransmuxer = options => {\n        const transmuxer = new TransmuxWorker();\n        transmuxer.currentTransmux = null;\n        transmuxer.transmuxQueue = [];\n        const term = transmuxer.terminate;\n        transmuxer.terminate = () => {\n            transmuxer.currentTransmux = null;\n            transmuxer.transmuxQueue.length = 0;\n            return term.call(transmuxer);\n        };\n        transmuxer.postMessage({\n            action: 'init',\n            options\n        });\n        return transmuxer;\n    };\n    var segmentTransmuxer = {\n        reset,\n        endTimeline,\n        transmux,\n        createTransmuxer\n    };\n    const workerCallback = function (options) {\n        const transmuxer = options.transmuxer;\n        const endAction = options.endAction || options.action;\n        const callback = options.callback;\n        const message = _extends$1({}, options, {\n            endAction: null,\n            transmuxer: null,\n            callback: null\n        });\n        const listenForEndEvent = event => {\n            if (event.data.action !== endAction) {\n                return;\n            }\n            transmuxer.removeEventListener('message', listenForEndEvent); // transfer ownership of bytes back to us.\n\n            if (event.data.data) {\n                event.data.data = new Uint8Array(event.data.data, options.byteOffset || 0, options.byteLength || event.data.data.byteLength);\n                if (options.data) {\n                    options.data = event.data.data;\n                }\n            }\n            callback(event.data);\n        };\n        transmuxer.addEventListener('message', listenForEndEvent);\n        if (options.data) {\n            const isArrayBuffer = options.data instanceof ArrayBuffer;\n            message.byteOffset = isArrayBuffer ? 0 : options.data.byteOffset;\n            message.byteLength = options.data.byteLength;\n            const transfers = [isArrayBuffer ? options.data : options.data.buffer];\n            transmuxer.postMessage(message, transfers);\n        } else {\n            transmuxer.postMessage(message);\n        }\n    };\n    const REQUEST_ERRORS = {\n        FAILURE: 2,\n        TIMEOUT: -101,\n        ABORTED: -102\n    };\n    /**\n     * Abort all requests\n     *\n     * @param {Object} activeXhrs - an object that tracks all XHR requests\n     */\n\n    const abortAll = activeXhrs => {\n        activeXhrs.forEach(xhr => {\n            xhr.abort();\n        });\n    };\n    /**\n     * Gather important bandwidth stats once a request has completed\n     *\n     * @param {Object} request - the XHR request from which to gather stats\n     */\n\n    const getRequestStats = request => {\n        return {\n            bandwidth: request.bandwidth,\n            bytesReceived: request.bytesReceived || 0,\n            roundTripTime: request.roundTripTime || 0\n        };\n    };\n    /**\n     * If possible gather bandwidth stats as a request is in\n     * progress\n     *\n     * @param {Event} progressEvent - an event object from an XHR's progress event\n     */\n\n    const getProgressStats = progressEvent => {\n        const request = progressEvent.target;\n        const roundTripTime = Date.now() - request.requestTime;\n        const stats = {\n            bandwidth: Infinity,\n            bytesReceived: 0,\n            roundTripTime: roundTripTime || 0\n        };\n        stats.bytesReceived = progressEvent.loaded; // This can result in Infinity if stats.roundTripTime is 0 but that is ok\n        // because we should only use bandwidth stats on progress to determine when\n        // abort a request early due to insufficient bandwidth\n\n        stats.bandwidth = Math.floor(stats.bytesReceived / stats.roundTripTime * 8 * 1000);\n        return stats;\n    };\n    /**\n     * Handle all error conditions in one place and return an object\n     * with all the information\n     *\n     * @param {Error|null} error - if non-null signals an error occured with the XHR\n     * @param {Object} request -  the XHR request that possibly generated the error\n     */\n\n    const handleErrors = (error, request) => {\n        if (request.timedout) {\n            return {\n                status: request.status,\n                message: 'HLS request timed-out at URL: ' + request.uri,\n                code: REQUEST_ERRORS.TIMEOUT,\n                xhr: request\n            };\n        }\n        if (request.aborted) {\n            return {\n                status: request.status,\n                message: 'HLS request aborted at URL: ' + request.uri,\n                code: REQUEST_ERRORS.ABORTED,\n                xhr: request\n            };\n        }\n        if (error) {\n            return {\n                status: request.status,\n                message: 'HLS request errored at URL: ' + request.uri,\n                code: REQUEST_ERRORS.FAILURE,\n                xhr: request\n            };\n        }\n        if (request.responseType === 'arraybuffer' && request.response.byteLength === 0) {\n            return {\n                status: request.status,\n                message: 'Empty HLS response at URL: ' + request.uri,\n                code: REQUEST_ERRORS.FAILURE,\n                xhr: request\n            };\n        }\n        return null;\n    };\n    /**\n     * Handle responses for key data and convert the key data to the correct format\n     * for the decryption step later\n     *\n     * @param {Object} segment - a simplified copy of the segmentInfo object\n     *                           from SegmentLoader\n     * @param {Array} objects - objects to add the key bytes to.\n     * @param {Function} finishProcessingFn - a callback to execute to continue processing\n     *                                        this request\n     */\n\n    const handleKeyResponse = (segment, objects, finishProcessingFn) => (error, request) => {\n        const response = request.response;\n        const errorObj = handleErrors(error, request);\n        if (errorObj) {\n            return finishProcessingFn(errorObj, segment);\n        }\n        if (response.byteLength !== 16) {\n            return finishProcessingFn({\n                status: request.status,\n                message: 'Invalid HLS key at URL: ' + request.uri,\n                code: REQUEST_ERRORS.FAILURE,\n                xhr: request\n            }, segment);\n        }\n        const view = new DataView(response);\n        const bytes = new Uint32Array([view.getUint32(0), view.getUint32(4), view.getUint32(8), view.getUint32(12)]);\n        for (let i = 0; i < objects.length; i++) {\n            objects[i].bytes = bytes;\n        }\n        return finishProcessingFn(null, segment);\n    };\n    const parseInitSegment = (segment, callback) => {\n        const type = detectContainerForBytes(segment.map.bytes); // TODO: We should also handle ts init segments here, but we\n        // only know how to parse mp4 init segments at the moment\n\n        if (type !== 'mp4') {\n            const uri = segment.map.resolvedUri || segment.map.uri;\n            return callback({\n                internal: true,\n                message: `Found unsupported ${type || 'unknown'} container for initialization segment at URL: ${uri}`,\n                code: REQUEST_ERRORS.FAILURE\n            });\n        }\n        workerCallback({\n            action: 'probeMp4Tracks',\n            data: segment.map.bytes,\n            transmuxer: segment.transmuxer,\n            callback: ({\n                           tracks,\n                           data\n                       }) => {\n                // transfer bytes back to us\n                segment.map.bytes = data;\n                tracks.forEach(function (track) {\n                    segment.map.tracks = segment.map.tracks || {}; // only support one track of each type for now\n\n                    if (segment.map.tracks[track.type]) {\n                        return;\n                    }\n                    segment.map.tracks[track.type] = track;\n                    if (typeof track.id === 'number' && track.timescale) {\n                        segment.map.timescales = segment.map.timescales || {};\n                        segment.map.timescales[track.id] = track.timescale;\n                    }\n                });\n                return callback(null);\n            }\n        });\n    };\n    /**\n     * Handle init-segment responses\n     *\n     * @param {Object} segment - a simplified copy of the segmentInfo object\n     *                           from SegmentLoader\n     * @param {Function} finishProcessingFn - a callback to execute to continue processing\n     *                                        this request\n     */\n\n    const handleInitSegmentResponse = ({\n                                           segment,\n                                           finishProcessingFn\n                                       }) => (error, request) => {\n        const errorObj = handleErrors(error, request);\n        if (errorObj) {\n            return finishProcessingFn(errorObj, segment);\n        }\n        const bytes = new Uint8Array(request.response); // init segment is encypted, we will have to wait\n        // until the key request is done to decrypt.\n\n        if (segment.map.key) {\n            segment.map.encryptedBytes = bytes;\n            return finishProcessingFn(null, segment);\n        }\n        segment.map.bytes = bytes;\n        parseInitSegment(segment, function (parseError) {\n            if (parseError) {\n                parseError.xhr = request;\n                parseError.status = request.status;\n                return finishProcessingFn(parseError, segment);\n            }\n            finishProcessingFn(null, segment);\n        });\n    };\n    /**\n     * Response handler for segment-requests being sure to set the correct\n     * property depending on whether the segment is encryped or not\n     * Also records and keeps track of stats that are used for ABR purposes\n     *\n     * @param {Object} segment - a simplified copy of the segmentInfo object\n     *                           from SegmentLoader\n     * @param {Function} finishProcessingFn - a callback to execute to continue processing\n     *                                        this request\n     */\n\n    const handleSegmentResponse = ({\n                                       segment,\n                                       finishProcessingFn,\n                                       responseType\n                                   }) => (error, request) => {\n        const errorObj = handleErrors(error, request);\n        if (errorObj) {\n            return finishProcessingFn(errorObj, segment);\n        }\n        const newBytes =\n            // although responseText \"should\" exist, this guard serves to prevent an error being\n            // thrown for two primary cases:\n            // 1. the mime type override stops working, or is not implemented for a specific\n            //    browser\n            // 2. when using mock XHR libraries like sinon that do not allow the override behavior\n            responseType === 'arraybuffer' || !request.responseText ? request.response : stringToArrayBuffer(request.responseText.substring(segment.lastReachedChar || 0));\n        segment.stats = getRequestStats(request);\n        if (segment.key) {\n            segment.encryptedBytes = new Uint8Array(newBytes);\n        } else {\n            segment.bytes = new Uint8Array(newBytes);\n        }\n        return finishProcessingFn(null, segment);\n    };\n    const transmuxAndNotify = ({\n                                   segment,\n                                   bytes,\n                                   trackInfoFn,\n                                   timingInfoFn,\n                                   videoSegmentTimingInfoFn,\n                                   audioSegmentTimingInfoFn,\n                                   id3Fn,\n                                   captionsFn,\n                                   isEndOfTimeline,\n                                   endedTimelineFn,\n                                   dataFn,\n                                   doneFn,\n                                   onTransmuxerLog\n                               }) => {\n        const fmp4Tracks = segment.map && segment.map.tracks || {};\n        const isMuxed = Boolean(fmp4Tracks.audio && fmp4Tracks.video); // Keep references to each function so we can null them out after we're done with them.\n        // One reason for this is that in the case of full segments, we want to trust start\n        // times from the probe, rather than the transmuxer.\n\n        let audioStartFn = timingInfoFn.bind(null, segment, 'audio', 'start');\n        const audioEndFn = timingInfoFn.bind(null, segment, 'audio', 'end');\n        let videoStartFn = timingInfoFn.bind(null, segment, 'video', 'start');\n        const videoEndFn = timingInfoFn.bind(null, segment, 'video', 'end');\n        const finish = () => transmux({\n            bytes,\n            transmuxer: segment.transmuxer,\n            audioAppendStart: segment.audioAppendStart,\n            gopsToAlignWith: segment.gopsToAlignWith,\n            remux: isMuxed,\n            onData: result => {\n                result.type = result.type === 'combined' ? 'video' : result.type;\n                dataFn(segment, result);\n            },\n            onTrackInfo: trackInfo => {\n                if (trackInfoFn) {\n                    if (isMuxed) {\n                        trackInfo.isMuxed = true;\n                    }\n                    trackInfoFn(segment, trackInfo);\n                }\n            },\n            onAudioTimingInfo: audioTimingInfo => {\n                // we only want the first start value we encounter\n                if (audioStartFn && typeof audioTimingInfo.start !== 'undefined') {\n                    audioStartFn(audioTimingInfo.start);\n                    audioStartFn = null;\n                } // we want to continually update the end time\n\n                if (audioEndFn && typeof audioTimingInfo.end !== 'undefined') {\n                    audioEndFn(audioTimingInfo.end);\n                }\n            },\n            onVideoTimingInfo: videoTimingInfo => {\n                // we only want the first start value we encounter\n                if (videoStartFn && typeof videoTimingInfo.start !== 'undefined') {\n                    videoStartFn(videoTimingInfo.start);\n                    videoStartFn = null;\n                } // we want to continually update the end time\n\n                if (videoEndFn && typeof videoTimingInfo.end !== 'undefined') {\n                    videoEndFn(videoTimingInfo.end);\n                }\n            },\n            onVideoSegmentTimingInfo: videoSegmentTimingInfo => {\n                videoSegmentTimingInfoFn(videoSegmentTimingInfo);\n            },\n            onAudioSegmentTimingInfo: audioSegmentTimingInfo => {\n                audioSegmentTimingInfoFn(audioSegmentTimingInfo);\n            },\n            onId3: (id3Frames, dispatchType) => {\n                id3Fn(segment, id3Frames, dispatchType);\n            },\n            onCaptions: captions => {\n                captionsFn(segment, [captions]);\n            },\n            isEndOfTimeline,\n            onEndedTimeline: () => {\n                endedTimelineFn();\n            },\n            onTransmuxerLog,\n            onDone: result => {\n                if (!doneFn) {\n                    return;\n                }\n                result.type = result.type === 'combined' ? 'video' : result.type;\n                doneFn(null, segment, result);\n            }\n        }); // In the transmuxer, we don't yet have the ability to extract a \"proper\" start time.\n        // Meaning cached frame data may corrupt our notion of where this segment\n        // really starts. To get around this, probe for the info needed.\n\n        workerCallback({\n            action: 'probeTs',\n            transmuxer: segment.transmuxer,\n            data: bytes,\n            baseStartTime: segment.baseStartTime,\n            callback: data => {\n                segment.bytes = bytes = data.data;\n                const probeResult = data.result;\n                if (probeResult) {\n                    trackInfoFn(segment, {\n                        hasAudio: probeResult.hasAudio,\n                        hasVideo: probeResult.hasVideo,\n                        isMuxed\n                    });\n                    trackInfoFn = null;\n                    if (probeResult.hasAudio && !isMuxed) {\n                        audioStartFn(probeResult.audioStart);\n                    }\n                    if (probeResult.hasVideo) {\n                        videoStartFn(probeResult.videoStart);\n                    }\n                    audioStartFn = null;\n                    videoStartFn = null;\n                }\n                finish();\n            }\n        });\n    };\n    const handleSegmentBytes = ({\n                                    segment,\n                                    bytes,\n                                    trackInfoFn,\n                                    timingInfoFn,\n                                    videoSegmentTimingInfoFn,\n                                    audioSegmentTimingInfoFn,\n                                    id3Fn,\n                                    captionsFn,\n                                    isEndOfTimeline,\n                                    endedTimelineFn,\n                                    dataFn,\n                                    doneFn,\n                                    onTransmuxerLog\n                                }) => {\n        let bytesAsUint8Array = new Uint8Array(bytes); // TODO:\n        // We should have a handler that fetches the number of bytes required\n        // to check if something is fmp4. This will allow us to save bandwidth\n        // because we can only exclude a playlist and abort requests\n        // by codec after trackinfo triggers.\n\n        if (isLikelyFmp4MediaSegment(bytesAsUint8Array)) {\n            segment.isFmp4 = true;\n            const {\n                tracks\n            } = segment.map;\n            const trackInfo = {\n                isFmp4: true,\n                hasVideo: !!tracks.video,\n                hasAudio: !!tracks.audio\n            }; // if we have a audio track, with a codec that is not set to\n            // encrypted audio\n\n            if (tracks.audio && tracks.audio.codec && tracks.audio.codec !== 'enca') {\n                trackInfo.audioCodec = tracks.audio.codec;\n            } // if we have a video track, with a codec that is not set to\n            // encrypted video\n\n            if (tracks.video && tracks.video.codec && tracks.video.codec !== 'encv') {\n                trackInfo.videoCodec = tracks.video.codec;\n            }\n            if (tracks.video && tracks.audio) {\n                trackInfo.isMuxed = true;\n            } // since we don't support appending fmp4 data on progress, we know we have the full\n            // segment here\n\n            trackInfoFn(segment, trackInfo); // The probe doesn't provide the segment end time, so only callback with the start\n            // time. The end time can be roughly calculated by the receiver using the duration.\n            //\n            // Note that the start time returned by the probe reflects the baseMediaDecodeTime, as\n            // that is the true start of the segment (where the playback engine should begin\n            // decoding).\n\n            const finishLoading = captions => {\n                // if the track still has audio at this point it is only possible\n                // for it to be audio only. See `tracks.video && tracks.audio` if statement\n                // above.\n                // we make sure to use segment.bytes here as that\n                dataFn(segment, {\n                    data: bytesAsUint8Array,\n                    type: trackInfo.hasAudio && !trackInfo.isMuxed ? 'audio' : 'video'\n                });\n                if (captions && captions.length) {\n                    captionsFn(segment, captions);\n                }\n                doneFn(null, segment, {});\n            };\n            workerCallback({\n                action: 'probeMp4StartTime',\n                timescales: segment.map.timescales,\n                data: bytesAsUint8Array,\n                transmuxer: segment.transmuxer,\n                callback: ({\n                               data,\n                               startTime\n                           }) => {\n                    // transfer bytes back to us\n                    bytes = data.buffer;\n                    segment.bytes = bytesAsUint8Array = data;\n                    if (trackInfo.hasAudio && !trackInfo.isMuxed) {\n                        timingInfoFn(segment, 'audio', 'start', startTime);\n                    }\n                    if (trackInfo.hasVideo) {\n                        timingInfoFn(segment, 'video', 'start', startTime);\n                    } // Run through the CaptionParser in case there are captions.\n                    // Initialize CaptionParser if it hasn't been yet\n\n                    if (!tracks.video || !data.byteLength || !segment.transmuxer) {\n                        finishLoading();\n                        return;\n                    }\n                    workerCallback({\n                        action: 'pushMp4Captions',\n                        endAction: 'mp4Captions',\n                        transmuxer: segment.transmuxer,\n                        data: bytesAsUint8Array,\n                        timescales: segment.map.timescales,\n                        trackIds: [tracks.video.id],\n                        callback: message => {\n                            // transfer bytes back to us\n                            bytes = message.data.buffer;\n                            segment.bytes = bytesAsUint8Array = message.data;\n                            message.logs.forEach(function (log) {\n                                onTransmuxerLog(merge(log, {\n                                    stream: 'mp4CaptionParser'\n                                }));\n                            });\n                            finishLoading(message.captions);\n                        }\n                    });\n                }\n            });\n            return;\n        } // VTT or other segments that don't need processing\n\n        if (!segment.transmuxer) {\n            doneFn(null, segment, {});\n            return;\n        }\n        if (typeof segment.container === 'undefined') {\n            segment.container = detectContainerForBytes(bytesAsUint8Array);\n        }\n        if (segment.container !== 'ts' && segment.container !== 'aac') {\n            trackInfoFn(segment, {\n                hasAudio: false,\n                hasVideo: false\n            });\n            doneFn(null, segment, {});\n            return;\n        } // ts or aac\n\n        transmuxAndNotify({\n            segment,\n            bytes,\n            trackInfoFn,\n            timingInfoFn,\n            videoSegmentTimingInfoFn,\n            audioSegmentTimingInfoFn,\n            id3Fn,\n            captionsFn,\n            isEndOfTimeline,\n            endedTimelineFn,\n            dataFn,\n            doneFn,\n            onTransmuxerLog\n        });\n    };\n    const decrypt = function ({\n                                  id,\n                                  key,\n                                  encryptedBytes,\n                                  decryptionWorker\n                              }, callback) {\n        const decryptionHandler = event => {\n            if (event.data.source === id) {\n                decryptionWorker.removeEventListener('message', decryptionHandler);\n                const decrypted = event.data.decrypted;\n                callback(new Uint8Array(decrypted.bytes, decrypted.byteOffset, decrypted.byteLength));\n            }\n        };\n        decryptionWorker.addEventListener('message', decryptionHandler);\n        let keyBytes;\n        if (key.bytes.slice) {\n            keyBytes = key.bytes.slice();\n        } else {\n            keyBytes = new Uint32Array(Array.prototype.slice.call(key.bytes));\n        } // incrementally decrypt the bytes\n\n        decryptionWorker.postMessage(createTransferableMessage({\n            source: id,\n            encrypted: encryptedBytes,\n            key: keyBytes,\n            iv: key.iv\n        }), [encryptedBytes.buffer, keyBytes.buffer]);\n    };\n    /**\n     * Decrypt the segment via the decryption web worker\n     *\n     * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128 decryption\n     *                                       routines\n     * @param {Object} segment - a simplified copy of the segmentInfo object\n     *                           from SegmentLoader\n     * @param {Function} trackInfoFn - a callback that receives track info\n     * @param {Function} timingInfoFn - a callback that receives timing info\n     * @param {Function} videoSegmentTimingInfoFn\n     *                   a callback that receives video timing info based on media times and\n     *                   any adjustments made by the transmuxer\n     * @param {Function} audioSegmentTimingInfoFn\n     *                   a callback that receives audio timing info based on media times and\n     *                   any adjustments made by the transmuxer\n     * @param {boolean}  isEndOfTimeline\n     *                   true if this segment represents the last segment in a timeline\n     * @param {Function} endedTimelineFn\n     *                   a callback made when a timeline is ended, will only be called if\n     *                   isEndOfTimeline is true\n     * @param {Function} dataFn - a callback that is executed when segment bytes are available\n     *                            and ready to use\n     * @param {Function} doneFn - a callback that is executed after decryption has completed\n     */\n\n    const decryptSegment = ({\n                                decryptionWorker,\n                                segment,\n                                trackInfoFn,\n                                timingInfoFn,\n                                videoSegmentTimingInfoFn,\n                                audioSegmentTimingInfoFn,\n                                id3Fn,\n                                captionsFn,\n                                isEndOfTimeline,\n                                endedTimelineFn,\n                                dataFn,\n                                doneFn,\n                                onTransmuxerLog\n                            }) => {\n        decrypt({\n            id: segment.requestId,\n            key: segment.key,\n            encryptedBytes: segment.encryptedBytes,\n            decryptionWorker\n        }, decryptedBytes => {\n            segment.bytes = decryptedBytes;\n            handleSegmentBytes({\n                segment,\n                bytes: segment.bytes,\n                trackInfoFn,\n                timingInfoFn,\n                videoSegmentTimingInfoFn,\n                audioSegmentTimingInfoFn,\n                id3Fn,\n                captionsFn,\n                isEndOfTimeline,\n                endedTimelineFn,\n                dataFn,\n                doneFn,\n                onTransmuxerLog\n            });\n        });\n    };\n    /**\n     * This function waits for all XHRs to finish (with either success or failure)\n     * before continueing processing via it's callback. The function gathers errors\n     * from each request into a single errors array so that the error status for\n     * each request can be examined later.\n     *\n     * @param {Object} activeXhrs - an object that tracks all XHR requests\n     * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128 decryption\n     *                                       routines\n     * @param {Function} trackInfoFn - a callback that receives track info\n     * @param {Function} timingInfoFn - a callback that receives timing info\n     * @param {Function} videoSegmentTimingInfoFn\n     *                   a callback that receives video timing info based on media times and\n     *                   any adjustments made by the transmuxer\n     * @param {Function} audioSegmentTimingInfoFn\n     *                   a callback that receives audio timing info based on media times and\n     *                   any adjustments made by the transmuxer\n     * @param {Function} id3Fn - a callback that receives ID3 metadata\n     * @param {Function} captionsFn - a callback that receives captions\n     * @param {boolean}  isEndOfTimeline\n     *                   true if this segment represents the last segment in a timeline\n     * @param {Function} endedTimelineFn\n     *                   a callback made when a timeline is ended, will only be called if\n     *                   isEndOfTimeline is true\n     * @param {Function} dataFn - a callback that is executed when segment bytes are available\n     *                            and ready to use\n     * @param {Function} doneFn - a callback that is executed after all resources have been\n     *                            downloaded and any decryption completed\n     */\n\n    const waitForCompletion = ({\n                                   activeXhrs,\n                                   decryptionWorker,\n                                   trackInfoFn,\n                                   timingInfoFn,\n                                   videoSegmentTimingInfoFn,\n                                   audioSegmentTimingInfoFn,\n                                   id3Fn,\n                                   captionsFn,\n                                   isEndOfTimeline,\n                                   endedTimelineFn,\n                                   dataFn,\n                                   doneFn,\n                                   onTransmuxerLog\n                               }) => {\n        let count = 0;\n        let didError = false;\n        return (error, segment) => {\n            if (didError) {\n                return;\n            }\n            if (error) {\n                didError = true; // If there are errors, we have to abort any outstanding requests\n\n                abortAll(activeXhrs); // Even though the requests above are aborted, and in theory we could wait until we\n                // handle the aborted events from those requests, there are some cases where we may\n                // never get an aborted event. For instance, if the network connection is lost and\n                // there were two requests, the first may have triggered an error immediately, while\n                // the second request remains unsent. In that case, the aborted algorithm will not\n                // trigger an abort: see https://xhr.spec.whatwg.org/#the-abort()-method\n                //\n                // We also can't rely on the ready state of the XHR, since the request that\n                // triggered the connection error may also show as a ready state of 0 (unsent).\n                // Therefore, we have to finish this group of requests immediately after the first\n                // seen error.\n\n                return doneFn(error, segment);\n            }\n            count += 1;\n            if (count === activeXhrs.length) {\n                const segmentFinish = function () {\n                    if (segment.encryptedBytes) {\n                        return decryptSegment({\n                            decryptionWorker,\n                            segment,\n                            trackInfoFn,\n                            timingInfoFn,\n                            videoSegmentTimingInfoFn,\n                            audioSegmentTimingInfoFn,\n                            id3Fn,\n                            captionsFn,\n                            isEndOfTimeline,\n                            endedTimelineFn,\n                            dataFn,\n                            doneFn,\n                            onTransmuxerLog\n                        });\n                    } // Otherwise, everything is ready just continue\n\n                    handleSegmentBytes({\n                        segment,\n                        bytes: segment.bytes,\n                        trackInfoFn,\n                        timingInfoFn,\n                        videoSegmentTimingInfoFn,\n                        audioSegmentTimingInfoFn,\n                        id3Fn,\n                        captionsFn,\n                        isEndOfTimeline,\n                        endedTimelineFn,\n                        dataFn,\n                        doneFn,\n                        onTransmuxerLog\n                    });\n                }; // Keep track of when *all* of the requests have completed\n\n                segment.endOfAllRequests = Date.now();\n                if (segment.map && segment.map.encryptedBytes && !segment.map.bytes) {\n                    return decrypt({\n                        decryptionWorker,\n                        // add -init to the \"id\" to differentiate between segment\n                        // and init segment decryption, just in case they happen\n                        // at the same time at some point in the future.\n                        id: segment.requestId + '-init',\n                        encryptedBytes: segment.map.encryptedBytes,\n                        key: segment.map.key\n                    }, decryptedBytes => {\n                        segment.map.bytes = decryptedBytes;\n                        parseInitSegment(segment, parseError => {\n                            if (parseError) {\n                                abortAll(activeXhrs);\n                                return doneFn(parseError, segment);\n                            }\n                            segmentFinish();\n                        });\n                    });\n                }\n                segmentFinish();\n            }\n        };\n    };\n    /**\n     * Calls the abort callback if any request within the batch was aborted. Will only call\n     * the callback once per batch of requests, even if multiple were aborted.\n     *\n     * @param {Object} loadendState - state to check to see if the abort function was called\n     * @param {Function} abortFn - callback to call for abort\n     */\n\n    const handleLoadEnd = ({\n                               loadendState,\n                               abortFn\n                           }) => event => {\n        const request = event.target;\n        if (request.aborted && abortFn && !loadendState.calledAbortFn) {\n            abortFn();\n            loadendState.calledAbortFn = true;\n        }\n    };\n    /**\n     * Simple progress event callback handler that gathers some stats before\n     * executing a provided callback with the `segment` object\n     *\n     * @param {Object} segment - a simplified copy of the segmentInfo object\n     *                           from SegmentLoader\n     * @param {Function} progressFn - a callback that is executed each time a progress event\n     *                                is received\n     * @param {Function} trackInfoFn - a callback that receives track info\n     * @param {Function} timingInfoFn - a callback that receives timing info\n     * @param {Function} videoSegmentTimingInfoFn\n     *                   a callback that receives video timing info based on media times and\n     *                   any adjustments made by the transmuxer\n     * @param {Function} audioSegmentTimingInfoFn\n     *                   a callback that receives audio timing info based on media times and\n     *                   any adjustments made by the transmuxer\n     * @param {boolean}  isEndOfTimeline\n     *                   true if this segment represents the last segment in a timeline\n     * @param {Function} endedTimelineFn\n     *                   a callback made when a timeline is ended, will only be called if\n     *                   isEndOfTimeline is true\n     * @param {Function} dataFn - a callback that is executed when segment bytes are available\n     *                            and ready to use\n     * @param {Event} event - the progress event object from XMLHttpRequest\n     */\n\n    const handleProgress = ({\n                                segment,\n                                progressFn,\n                                trackInfoFn,\n                                timingInfoFn,\n                                videoSegmentTimingInfoFn,\n                                audioSegmentTimingInfoFn,\n                                id3Fn,\n                                captionsFn,\n                                isEndOfTimeline,\n                                endedTimelineFn,\n                                dataFn\n                            }) => event => {\n        const request = event.target;\n        if (request.aborted) {\n            return;\n        }\n        segment.stats = merge(segment.stats, getProgressStats(event)); // record the time that we receive the first byte of data\n\n        if (!segment.stats.firstBytesReceivedAt && segment.stats.bytesReceived) {\n            segment.stats.firstBytesReceivedAt = Date.now();\n        }\n        return progressFn(event, segment);\n    };\n    /**\n     * Load all resources and does any processing necessary for a media-segment\n     *\n     * Features:\n     *   decrypts the media-segment if it has a key uri and an iv\n     *   aborts *all* requests if *any* one request fails\n     *\n     * The segment object, at minimum, has the following format:\n     * {\n     *   resolvedUri: String,\n     *   [transmuxer]: Object,\n     *   [byterange]: {\n     *     offset: Number,\n     *     length: Number\n     *   },\n     *   [key]: {\n     *     resolvedUri: String\n     *     [byterange]: {\n     *       offset: Number,\n     *       length: Number\n     *     },\n     *     iv: {\n     *       bytes: Uint32Array\n     *     }\n     *   },\n     *   [map]: {\n     *     resolvedUri: String,\n     *     [byterange]: {\n     *       offset: Number,\n     *       length: Number\n     *     },\n     *     [bytes]: Uint8Array\n     *   }\n     * }\n     * ...where [name] denotes optional properties\n     *\n     * @param {Function} xhr - an instance of the xhr wrapper in xhr.js\n     * @param {Object} xhrOptions - the base options to provide to all xhr requests\n     * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128\n     *                                       decryption routines\n     * @param {Object} segment - a simplified copy of the segmentInfo object\n     *                           from SegmentLoader\n     * @param {Function} abortFn - a callback called (only once) if any piece of a request was\n     *                             aborted\n     * @param {Function} progressFn - a callback that receives progress events from the main\n     *                                segment's xhr request\n     * @param {Function} trackInfoFn - a callback that receives track info\n     * @param {Function} timingInfoFn - a callback that receives timing info\n     * @param {Function} videoSegmentTimingInfoFn\n     *                   a callback that receives video timing info based on media times and\n     *                   any adjustments made by the transmuxer\n     * @param {Function} audioSegmentTimingInfoFn\n     *                   a callback that receives audio timing info based on media times and\n     *                   any adjustments made by the transmuxer\n     * @param {Function} id3Fn - a callback that receives ID3 metadata\n     * @param {Function} captionsFn - a callback that receives captions\n     * @param {boolean}  isEndOfTimeline\n     *                   true if this segment represents the last segment in a timeline\n     * @param {Function} endedTimelineFn\n     *                   a callback made when a timeline is ended, will only be called if\n     *                   isEndOfTimeline is true\n     * @param {Function} dataFn - a callback that receives data from the main segment's xhr\n     *                            request, transmuxed if needed\n     * @param {Function} doneFn - a callback that is executed only once all requests have\n     *                            succeeded or failed\n     * @return {Function} a function that, when invoked, immediately aborts all\n     *                     outstanding requests\n     */\n\n    const mediaSegmentRequest = ({\n                                     xhr,\n                                     xhrOptions,\n                                     decryptionWorker,\n                                     segment,\n                                     abortFn,\n                                     progressFn,\n                                     trackInfoFn,\n                                     timingInfoFn,\n                                     videoSegmentTimingInfoFn,\n                                     audioSegmentTimingInfoFn,\n                                     id3Fn,\n                                     captionsFn,\n                                     isEndOfTimeline,\n                                     endedTimelineFn,\n                                     dataFn,\n                                     doneFn,\n                                     onTransmuxerLog\n                                 }) => {\n        const activeXhrs = [];\n        const finishProcessingFn = waitForCompletion({\n            activeXhrs,\n            decryptionWorker,\n            trackInfoFn,\n            timingInfoFn,\n            videoSegmentTimingInfoFn,\n            audioSegmentTimingInfoFn,\n            id3Fn,\n            captionsFn,\n            isEndOfTimeline,\n            endedTimelineFn,\n            dataFn,\n            doneFn,\n            onTransmuxerLog\n        }); // optionally, request the decryption key\n\n        if (segment.key && !segment.key.bytes) {\n            const objects = [segment.key];\n            if (segment.map && !segment.map.bytes && segment.map.key && segment.map.key.resolvedUri === segment.key.resolvedUri) {\n                objects.push(segment.map.key);\n            }\n            const keyRequestOptions = merge(xhrOptions, {\n                uri: segment.key.resolvedUri,\n                responseType: 'arraybuffer'\n            });\n            const keyRequestCallback = handleKeyResponse(segment, objects, finishProcessingFn);\n            const keyXhr = xhr(keyRequestOptions, keyRequestCallback);\n            activeXhrs.push(keyXhr);\n        } // optionally, request the associated media init segment\n\n        if (segment.map && !segment.map.bytes) {\n            const differentMapKey = segment.map.key && (!segment.key || segment.key.resolvedUri !== segment.map.key.resolvedUri);\n            if (differentMapKey) {\n                const mapKeyRequestOptions = merge(xhrOptions, {\n                    uri: segment.map.key.resolvedUri,\n                    responseType: 'arraybuffer'\n                });\n                const mapKeyRequestCallback = handleKeyResponse(segment, [segment.map.key], finishProcessingFn);\n                const mapKeyXhr = xhr(mapKeyRequestOptions, mapKeyRequestCallback);\n                activeXhrs.push(mapKeyXhr);\n            }\n            const initSegmentOptions = merge(xhrOptions, {\n                uri: segment.map.resolvedUri,\n                responseType: 'arraybuffer',\n                headers: segmentXhrHeaders(segment.map)\n            });\n            const initSegmentRequestCallback = handleInitSegmentResponse({\n                segment,\n                finishProcessingFn\n            });\n            const initSegmentXhr = xhr(initSegmentOptions, initSegmentRequestCallback);\n            activeXhrs.push(initSegmentXhr);\n        }\n        const segmentRequestOptions = merge(xhrOptions, {\n            uri: segment.part && segment.part.resolvedUri || segment.resolvedUri,\n            responseType: 'arraybuffer',\n            headers: segmentXhrHeaders(segment)\n        });\n        const segmentRequestCallback = handleSegmentResponse({\n            segment,\n            finishProcessingFn,\n            responseType: segmentRequestOptions.responseType\n        });\n        const segmentXhr = xhr(segmentRequestOptions, segmentRequestCallback);\n        segmentXhr.addEventListener('progress', handleProgress({\n            segment,\n            progressFn,\n            trackInfoFn,\n            timingInfoFn,\n            videoSegmentTimingInfoFn,\n            audioSegmentTimingInfoFn,\n            id3Fn,\n            captionsFn,\n            isEndOfTimeline,\n            endedTimelineFn,\n            dataFn\n        }));\n        activeXhrs.push(segmentXhr); // since all parts of the request must be considered, but should not make callbacks\n        // multiple times, provide a shared state object\n\n        const loadendState = {};\n        activeXhrs.forEach(activeXhr => {\n            activeXhr.addEventListener('loadend', handleLoadEnd({\n                loadendState,\n                abortFn\n            }));\n        });\n        return () => abortAll(activeXhrs);\n    };\n\n    /**\n     * @file - codecs.js - Handles tasks regarding codec strings such as translating them to\n     * codec strings, or translating codec strings into objects that can be examined.\n     */\n    const logFn$1 = logger('CodecUtils');\n    /**\n     * Returns a set of codec strings parsed from the playlist or the default\n     * codec strings if no codecs were specified in the playlist\n     *\n     * @param {Playlist} media the current media playlist\n     * @return {Object} an object with the video and audio codecs\n     */\n\n    const getCodecs = function (media) {\n        // if the codecs were explicitly specified, use them instead of the\n        // defaults\n        const mediaAttributes = media.attributes || {};\n        if (mediaAttributes.CODECS) {\n            return parseCodecs(mediaAttributes.CODECS);\n        }\n    };\n    const isMaat = (main, media) => {\n        const mediaAttributes = media.attributes || {};\n        return main && main.mediaGroups && main.mediaGroups.AUDIO && mediaAttributes.AUDIO && main.mediaGroups.AUDIO[mediaAttributes.AUDIO];\n    };\n    const isMuxed = (main, media) => {\n        if (!isMaat(main, media)) {\n            return true;\n        }\n        const mediaAttributes = media.attributes || {};\n        const audioGroup = main.mediaGroups.AUDIO[mediaAttributes.AUDIO];\n        for (const groupId in audioGroup) {\n            // If an audio group has a URI (the case for HLS, as HLS will use external playlists),\n            // or there are listed playlists (the case for DASH, as the manifest will have already\n            // provided all of the details necessary to generate the audio playlist, as opposed to\n            // HLS' externally requested playlists), then the content is demuxed.\n            if (!audioGroup[groupId].uri && !audioGroup[groupId].playlists) {\n                return true;\n            }\n        }\n        return false;\n    };\n    const unwrapCodecList = function (codecList) {\n        const codecs = {};\n        codecList.forEach(({\n                               mediaType,\n                               type,\n                               details\n                           }) => {\n            codecs[mediaType] = codecs[mediaType] || [];\n            codecs[mediaType].push(translateLegacyCodec(`${type}${details}`));\n        });\n        Object.keys(codecs).forEach(function (mediaType) {\n            if (codecs[mediaType].length > 1) {\n                logFn$1(`multiple ${mediaType} codecs found as attributes: ${codecs[mediaType].join(', ')}. Setting playlist codecs to null so that we wait for mux.js to probe segments for real codecs.`);\n                codecs[mediaType] = null;\n                return;\n            }\n            codecs[mediaType] = codecs[mediaType][0];\n        });\n        return codecs;\n    };\n    const codecCount = function (codecObj) {\n        let count = 0;\n        if (codecObj.audio) {\n            count++;\n        }\n        if (codecObj.video) {\n            count++;\n        }\n        return count;\n    };\n    /**\n     * Calculates the codec strings for a working configuration of\n     * SourceBuffers to play variant streams in a main playlist. If\n     * there is no possible working configuration, an empty object will be\n     * returned.\n     *\n     * @param main {Object} the m3u8 object for the main playlist\n     * @param media {Object} the m3u8 object for the variant playlist\n     * @return {Object} the codec strings.\n     *\n     * @private\n     */\n\n    const codecsForPlaylist = function (main, media) {\n        const mediaAttributes = media.attributes || {};\n        const codecInfo = unwrapCodecList(getCodecs(media) || []); // HLS with multiple-audio tracks must always get an audio codec.\n        // Put another way, there is no way to have a video-only multiple-audio HLS!\n\n        if (isMaat(main, media) && !codecInfo.audio) {\n            if (!isMuxed(main, media)) {\n                // It is possible for codecs to be specified on the audio media group playlist but\n                // not on the rendition playlist. This is mostly the case for DASH, where audio and\n                // video are always separate (and separately specified).\n                const defaultCodecs = unwrapCodecList(codecsFromDefault(main, mediaAttributes.AUDIO) || []);\n                if (defaultCodecs.audio) {\n                    codecInfo.audio = defaultCodecs.audio;\n                }\n            }\n        }\n        return codecInfo;\n    };\n    const logFn = logger('PlaylistSelector');\n    const representationToString = function (representation) {\n        if (!representation || !representation.playlist) {\n            return;\n        }\n        const playlist = representation.playlist;\n        return JSON.stringify({\n            id: playlist.id,\n            bandwidth: representation.bandwidth,\n            width: representation.width,\n            height: representation.height,\n            codecs: playlist.attributes && playlist.attributes.CODECS || ''\n        });\n    }; // Utilities\n\n    /**\n     * Returns the CSS value for the specified property on an element\n     * using `getComputedStyle`. Firefox has a long-standing issue where\n     * getComputedStyle() may return null when running in an iframe with\n     * `display: none`.\n     *\n     * @see https://bugzilla.mozilla.org/show_bug.cgi?id=548397\n     * @param {HTMLElement} el the htmlelement to work on\n     * @param {string} the proprety to get the style for\n     */\n\n    const safeGetComputedStyle = function (el, property) {\n        if (!el) {\n            return '';\n        }\n        const result = window.getComputedStyle(el);\n        if (!result) {\n            return '';\n        }\n        return result[property];\n    };\n    /**\n     * Resuable stable sort function\n     *\n     * @param {Playlists} array\n     * @param {Function} sortFn Different comparators\n     * @function stableSort\n     */\n\n    const stableSort = function (array, sortFn) {\n        const newArray = array.slice();\n        array.sort(function (left, right) {\n            const cmp = sortFn(left, right);\n            if (cmp === 0) {\n                return newArray.indexOf(left) - newArray.indexOf(right);\n            }\n            return cmp;\n        });\n    };\n    /**\n     * A comparator function to sort two playlist object by bandwidth.\n     *\n     * @param {Object} left a media playlist object\n     * @param {Object} right a media playlist object\n     * @return {number} Greater than zero if the bandwidth attribute of\n     * left is greater than the corresponding attribute of right. Less\n     * than zero if the bandwidth of right is greater than left and\n     * exactly zero if the two are equal.\n     */\n\n    const comparePlaylistBandwidth = function (left, right) {\n        let leftBandwidth;\n        let rightBandwidth;\n        if (left.attributes.BANDWIDTH) {\n            leftBandwidth = left.attributes.BANDWIDTH;\n        }\n        leftBandwidth = leftBandwidth || window.Number.MAX_VALUE;\n        if (right.attributes.BANDWIDTH) {\n            rightBandwidth = right.attributes.BANDWIDTH;\n        }\n        rightBandwidth = rightBandwidth || window.Number.MAX_VALUE;\n        return leftBandwidth - rightBandwidth;\n    };\n    /**\n     * A comparator function to sort two playlist object by resolution (width).\n     *\n     * @param {Object} left a media playlist object\n     * @param {Object} right a media playlist object\n     * @return {number} Greater than zero if the resolution.width attribute of\n     * left is greater than the corresponding attribute of right. Less\n     * than zero if the resolution.width of right is greater than left and\n     * exactly zero if the two are equal.\n     */\n\n    const comparePlaylistResolution = function (left, right) {\n        let leftWidth;\n        let rightWidth;\n        if (left.attributes.RESOLUTION && left.attributes.RESOLUTION.width) {\n            leftWidth = left.attributes.RESOLUTION.width;\n        }\n        leftWidth = leftWidth || window.Number.MAX_VALUE;\n        if (right.attributes.RESOLUTION && right.attributes.RESOLUTION.width) {\n            rightWidth = right.attributes.RESOLUTION.width;\n        }\n        rightWidth = rightWidth || window.Number.MAX_VALUE; // NOTE - Fallback to bandwidth sort as appropriate in cases where multiple renditions\n        // have the same media dimensions/ resolution\n\n        if (leftWidth === rightWidth && left.attributes.BANDWIDTH && right.attributes.BANDWIDTH) {\n            return left.attributes.BANDWIDTH - right.attributes.BANDWIDTH;\n        }\n        return leftWidth - rightWidth;\n    };\n    /**\n     * Chooses the appropriate media playlist based on bandwidth and player size\n     *\n     * @param {Object} main\n     *        Object representation of the main manifest\n     * @param {number} playerBandwidth\n     *        Current calculated bandwidth of the player\n     * @param {number} playerWidth\n     *        Current width of the player element (should account for the device pixel ratio)\n     * @param {number} playerHeight\n     *        Current height of the player element (should account for the device pixel ratio)\n     * @param {boolean} limitRenditionByPlayerDimensions\n     *        True if the player width and height should be used during the selection, false otherwise\n     * @param {Object} playlistController\n     *        the current playlistController object\n     * @return {Playlist} the highest bitrate playlist less than the\n     * currently detected bandwidth, accounting for some amount of\n     * bandwidth variance\n     */\n\n    let simpleSelector = function (main, playerBandwidth, playerWidth, playerHeight, limitRenditionByPlayerDimensions, playlistController) {\n        // If we end up getting called before `main` is available, exit early\n        if (!main) {\n            return;\n        }\n        const options = {\n            bandwidth: playerBandwidth,\n            width: playerWidth,\n            height: playerHeight,\n            limitRenditionByPlayerDimensions\n        };\n        let playlists = main.playlists; // if playlist is audio only, select between currently active audio group playlists.\n\n        if (Playlist.isAudioOnly(main)) {\n            playlists = playlistController.getAudioTrackPlaylists_(); // add audioOnly to options so that we log audioOnly: true\n            // at the buttom of this function for debugging.\n\n            options.audioOnly = true;\n        } // convert the playlists to an intermediary representation to make comparisons easier\n\n        let sortedPlaylistReps = playlists.map(playlist => {\n            let bandwidth;\n            const width = playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.width;\n            const height = playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height;\n            bandwidth = playlist.attributes && playlist.attributes.BANDWIDTH;\n            bandwidth = bandwidth || window.Number.MAX_VALUE;\n            return {\n                bandwidth,\n                width,\n                height,\n                playlist\n            };\n        });\n        stableSort(sortedPlaylistReps, (left, right) => left.bandwidth - right.bandwidth); // filter out any playlists that have been excluded due to\n        // incompatible configurations\n\n        sortedPlaylistReps = sortedPlaylistReps.filter(rep => !Playlist.isIncompatible(rep.playlist)); // filter out any playlists that have been disabled manually through the representations\n        // api or excluded temporarily due to playback errors.\n\n        let enabledPlaylistReps = sortedPlaylistReps.filter(rep => Playlist.isEnabled(rep.playlist));\n        if (!enabledPlaylistReps.length) {\n            // if there are no enabled playlists, then they have all been excluded or disabled\n            // by the user through the representations api. In this case, ignore exclusion and\n            // fallback to what the user wants by using playlists the user has not disabled.\n            enabledPlaylistReps = sortedPlaylistReps.filter(rep => !Playlist.isDisabled(rep.playlist));\n        } // filter out any variant that has greater effective bitrate\n        // than the current estimated bandwidth\n\n        const bandwidthPlaylistReps = enabledPlaylistReps.filter(rep => rep.bandwidth * Config.BANDWIDTH_VARIANCE < playerBandwidth);\n        let highestRemainingBandwidthRep = bandwidthPlaylistReps[bandwidthPlaylistReps.length - 1]; // get all of the renditions with the same (highest) bandwidth\n        // and then taking the very first element\n\n        const bandwidthBestRep = bandwidthPlaylistReps.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0]; // if we're not going to limit renditions by player size, make an early decision.\n\n        if (limitRenditionByPlayerDimensions === false) {\n            const chosenRep = bandwidthBestRep || enabledPlaylistReps[0] || sortedPlaylistReps[0];\n            if (chosenRep && chosenRep.playlist) {\n                let type = 'sortedPlaylistReps';\n                if (bandwidthBestRep) {\n                    type = 'bandwidthBestRep';\n                }\n                if (enabledPlaylistReps[0]) {\n                    type = 'enabledPlaylistReps';\n                }\n                logFn(`choosing ${representationToString(chosenRep)} using ${type} with options`, options);\n                return chosenRep.playlist;\n            }\n            logFn('could not choose a playlist with options', options);\n            return null;\n        } // filter out playlists without resolution information\n\n        const haveResolution = bandwidthPlaylistReps.filter(rep => rep.width && rep.height); // sort variants by resolution\n\n        stableSort(haveResolution, (left, right) => left.width - right.width); // if we have the exact resolution as the player use it\n\n        const resolutionBestRepList = haveResolution.filter(rep => rep.width === playerWidth && rep.height === playerHeight);\n        highestRemainingBandwidthRep = resolutionBestRepList[resolutionBestRepList.length - 1]; // ensure that we pick the highest bandwidth variant that have exact resolution\n\n        const resolutionBestRep = resolutionBestRepList.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0];\n        let resolutionPlusOneList;\n        let resolutionPlusOneSmallest;\n        let resolutionPlusOneRep; // find the smallest variant that is larger than the player\n        // if there is no match of exact resolution\n\n        if (!resolutionBestRep) {\n            resolutionPlusOneList = haveResolution.filter(rep => rep.width > playerWidth || rep.height > playerHeight); // find all the variants have the same smallest resolution\n\n            resolutionPlusOneSmallest = resolutionPlusOneList.filter(rep => rep.width === resolutionPlusOneList[0].width && rep.height === resolutionPlusOneList[0].height); // ensure that we also pick the highest bandwidth variant that\n            // is just-larger-than the video player\n\n            highestRemainingBandwidthRep = resolutionPlusOneSmallest[resolutionPlusOneSmallest.length - 1];\n            resolutionPlusOneRep = resolutionPlusOneSmallest.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0];\n        }\n        let leastPixelDiffRep; // If this selector proves to be better than others,\n        // resolutionPlusOneRep and resolutionBestRep and all\n        // the code involving them should be removed.\n\n        if (playlistController.leastPixelDiffSelector) {\n            // find the variant that is closest to the player's pixel size\n            const leastPixelDiffList = haveResolution.map(rep => {\n                rep.pixelDiff = Math.abs(rep.width - playerWidth) + Math.abs(rep.height - playerHeight);\n                return rep;\n            }); // get the highest bandwidth, closest resolution playlist\n\n            stableSort(leastPixelDiffList, (left, right) => {\n                // sort by highest bandwidth if pixelDiff is the same\n                if (left.pixelDiff === right.pixelDiff) {\n                    return right.bandwidth - left.bandwidth;\n                }\n                return left.pixelDiff - right.pixelDiff;\n            });\n            leastPixelDiffRep = leastPixelDiffList[0];\n        } // fallback chain of variants\n\n        const chosenRep = leastPixelDiffRep || resolutionPlusOneRep || resolutionBestRep || bandwidthBestRep || enabledPlaylistReps[0] || sortedPlaylistReps[0];\n        if (chosenRep && chosenRep.playlist) {\n            let type = 'sortedPlaylistReps';\n            if (leastPixelDiffRep) {\n                type = 'leastPixelDiffRep';\n            } else if (resolutionPlusOneRep) {\n                type = 'resolutionPlusOneRep';\n            } else if (resolutionBestRep) {\n                type = 'resolutionBestRep';\n            } else if (bandwidthBestRep) {\n                type = 'bandwidthBestRep';\n            } else if (enabledPlaylistReps[0]) {\n                type = 'enabledPlaylistReps';\n            }\n            logFn(`choosing ${representationToString(chosenRep)} using ${type} with options`, options);\n            return chosenRep.playlist;\n        }\n        logFn('could not choose a playlist with options', options);\n        return null;\n    };\n\n    /**\n     * Chooses the appropriate media playlist based on the most recent\n     * bandwidth estimate and the player size.\n     *\n     * Expects to be called within the context of an instance of VhsHandler\n     *\n     * @return {Playlist} the highest bitrate playlist less than the\n     * currently detected bandwidth, accounting for some amount of\n     * bandwidth variance\n     */\n\n    const lastBandwidthSelector = function () {\n        const pixelRatio = this.useDevicePixelRatio ? window.devicePixelRatio || 1 : 1;\n        return simpleSelector(this.playlists.main, this.systemBandwidth, parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10) * pixelRatio, parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10) * pixelRatio, this.limitRenditionByPlayerDimensions, this.playlistController_);\n    };\n    /**\n     * Chooses the appropriate media playlist based on an\n     * exponential-weighted moving average of the bandwidth after\n     * filtering for player size.\n     *\n     * Expects to be called within the context of an instance of VhsHandler\n     *\n     * @param {number} decay - a number between 0 and 1. Higher values of\n     * this parameter will cause previous bandwidth estimates to lose\n     * significance more quickly.\n     * @return {Function} a function which can be invoked to create a new\n     * playlist selector function.\n     * @see https://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average\n     */\n\n    const movingAverageBandwidthSelector = function (decay) {\n        let average = -1;\n        let lastSystemBandwidth = -1;\n        if (decay < 0 || decay > 1) {\n            throw new Error('Moving average bandwidth decay must be between 0 and 1.');\n        }\n        return function () {\n            const pixelRatio = this.useDevicePixelRatio ? window.devicePixelRatio || 1 : 1;\n            if (average < 0) {\n                average = this.systemBandwidth;\n                lastSystemBandwidth = this.systemBandwidth;\n            } // stop the average value from decaying for every 250ms\n            // when the systemBandwidth is constant\n            // and\n            // stop average from setting to a very low value when the\n            // systemBandwidth becomes 0 in case of chunk cancellation\n\n            if (this.systemBandwidth > 0 && this.systemBandwidth !== lastSystemBandwidth) {\n                average = decay * this.systemBandwidth + (1 - decay) * average;\n                lastSystemBandwidth = this.systemBandwidth;\n            }\n            return simpleSelector(this.playlists.main, average, parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10) * pixelRatio, parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10) * pixelRatio, this.limitRenditionByPlayerDimensions, this.playlistController_);\n        };\n    };\n    /**\n     * Chooses the appropriate media playlist based on the potential to rebuffer\n     *\n     * @param {Object} settings\n     *        Object of information required to use this selector\n     * @param {Object} settings.main\n     *        Object representation of the main manifest\n     * @param {number} settings.currentTime\n     *        The current time of the player\n     * @param {number} settings.bandwidth\n     *        Current measured bandwidth\n     * @param {number} settings.duration\n     *        Duration of the media\n     * @param {number} settings.segmentDuration\n     *        Segment duration to be used in round trip time calculations\n     * @param {number} settings.timeUntilRebuffer\n     *        Time left in seconds until the player has to rebuffer\n     * @param {number} settings.currentTimeline\n     *        The current timeline segments are being loaded from\n     * @param {SyncController} settings.syncController\n     *        SyncController for determining if we have a sync point for a given playlist\n     * @return {Object|null}\n     *         {Object} return.playlist\n     *         The highest bandwidth playlist with the least amount of rebuffering\n     *         {Number} return.rebufferingImpact\n     *         The amount of time in seconds switching to this playlist will rebuffer. A\n     *         negative value means that switching will cause zero rebuffering.\n     */\n\n    const minRebufferMaxBandwidthSelector = function (settings) {\n        const {\n            main,\n            currentTime,\n            bandwidth,\n            duration,\n            segmentDuration,\n            timeUntilRebuffer,\n            currentTimeline,\n            syncController\n        } = settings; // filter out any playlists that have been excluded due to\n        // incompatible configurations\n\n        const compatiblePlaylists = main.playlists.filter(playlist => !Playlist.isIncompatible(playlist)); // filter out any playlists that have been disabled manually through the representations\n        // api or excluded temporarily due to playback errors.\n\n        let enabledPlaylists = compatiblePlaylists.filter(Playlist.isEnabled);\n        if (!enabledPlaylists.length) {\n            // if there are no enabled playlists, then they have all been excluded or disabled\n            // by the user through the representations api. In this case, ignore exclusion and\n            // fallback to what the user wants by using playlists the user has not disabled.\n            enabledPlaylists = compatiblePlaylists.filter(playlist => !Playlist.isDisabled(playlist));\n        }\n        const bandwidthPlaylists = enabledPlaylists.filter(Playlist.hasAttribute.bind(null, 'BANDWIDTH'));\n        const rebufferingEstimates = bandwidthPlaylists.map(playlist => {\n            const syncPoint = syncController.getSyncPoint(playlist, duration, currentTimeline, currentTime); // If there is no sync point for this playlist, switching to it will require a\n            // sync request first. This will double the request time\n\n            const numRequests = syncPoint ? 1 : 2;\n            const requestTimeEstimate = Playlist.estimateSegmentRequestTime(segmentDuration, bandwidth, playlist);\n            const rebufferingImpact = requestTimeEstimate * numRequests - timeUntilRebuffer;\n            return {\n                playlist,\n                rebufferingImpact\n            };\n        });\n        const noRebufferingPlaylists = rebufferingEstimates.filter(estimate => estimate.rebufferingImpact <= 0); // Sort by bandwidth DESC\n\n        stableSort(noRebufferingPlaylists, (a, b) => comparePlaylistBandwidth(b.playlist, a.playlist));\n        if (noRebufferingPlaylists.length) {\n            return noRebufferingPlaylists[0];\n        }\n        stableSort(rebufferingEstimates, (a, b) => a.rebufferingImpact - b.rebufferingImpact);\n        return rebufferingEstimates[0] || null;\n    };\n    /**\n     * Chooses the appropriate media playlist, which in this case is the lowest bitrate\n     * one with video.  If no renditions with video exist, return the lowest audio rendition.\n     *\n     * Expects to be called within the context of an instance of VhsHandler\n     *\n     * @return {Object|null}\n     *         {Object} return.playlist\n     *         The lowest bitrate playlist that contains a video codec.  If no such rendition\n     *         exists pick the lowest audio rendition.\n     */\n\n    const lowestBitrateCompatibleVariantSelector = function () {\n        // filter out any playlists that have been excluded due to\n        // incompatible configurations or playback errors\n        const playlists = this.playlists.main.playlists.filter(Playlist.isEnabled); // Sort ascending by bitrate\n\n        stableSort(playlists, (a, b) => comparePlaylistBandwidth(a, b)); // Parse and assume that playlists with no video codec have no video\n        // (this is not necessarily true, although it is generally true).\n        //\n        // If an entire manifest has no valid videos everything will get filtered\n        // out.\n\n        const playlistsWithVideo = playlists.filter(playlist => !!codecsForPlaylist(this.playlists.main, playlist).video);\n        return playlistsWithVideo[0] || null;\n    };\n\n    /**\n     * Combine all segments into a single Uint8Array\n     *\n     * @param {Object} segmentObj\n     * @return {Uint8Array} concatenated bytes\n     * @private\n     */\n    const concatSegments = segmentObj => {\n        let offset = 0;\n        let tempBuffer;\n        if (segmentObj.bytes) {\n            tempBuffer = new Uint8Array(segmentObj.bytes); // combine the individual segments into one large typed-array\n\n            segmentObj.segments.forEach(segment => {\n                tempBuffer.set(segment, offset);\n                offset += segment.byteLength;\n            });\n        }\n        return tempBuffer;\n    };\n\n    /**\n     * @file text-tracks.js\n     */\n    /**\n     * Create captions text tracks on video.js if they do not exist\n     *\n     * @param {Object} inbandTextTracks a reference to current inbandTextTracks\n     * @param {Object} tech the video.js tech\n     * @param {Object} captionStream the caption stream to create\n     * @private\n     */\n\n    const createCaptionsTrackIfNotExists = function (inbandTextTracks, tech, captionStream) {\n        if (!inbandTextTracks[captionStream]) {\n            tech.trigger({\n                type: 'usage',\n                name: 'vhs-608'\n            });\n            let instreamId = captionStream; // we need to translate SERVICEn for 708 to how mux.js currently labels them\n\n            if (/^cc708_/.test(captionStream)) {\n                instreamId = 'SERVICE' + captionStream.split('_')[1];\n            }\n            const track = tech.textTracks().getTrackById(instreamId);\n            if (track) {\n                // Resuse an existing track with a CC# id because this was\n                // very likely created by videojs-contrib-hls from information\n                // in the m3u8 for us to use\n                inbandTextTracks[captionStream] = track;\n            } else {\n                // This section gets called when we have caption services that aren't specified in the manifest.\n                // Manifest level caption services are handled in media-groups.js under CLOSED-CAPTIONS.\n                const captionServices = tech.options_.vhs && tech.options_.vhs.captionServices || {};\n                let label = captionStream;\n                let language = captionStream;\n                let def = false;\n                const captionService = captionServices[instreamId];\n                if (captionService) {\n                    label = captionService.label;\n                    language = captionService.language;\n                    def = captionService.default;\n                } // Otherwise, create a track with the default `CC#` label and\n                // without a language\n\n                inbandTextTracks[captionStream] = tech.addRemoteTextTrack({\n                    kind: 'captions',\n                    id: instreamId,\n                    // TODO: investigate why this doesn't seem to turn the caption on by default\n                    default: def,\n                    label,\n                    language\n                }, false).track;\n            }\n        }\n    };\n    /**\n     * Add caption text track data to a source handler given an array of captions\n     *\n     * @param {Object}\n     *   @param {Object} inbandTextTracks the inband text tracks\n     *   @param {number} timestampOffset the timestamp offset of the source buffer\n     *   @param {Array} captionArray an array of caption data\n     * @private\n     */\n\n    const addCaptionData = function ({\n                                         inbandTextTracks,\n                                         captionArray,\n                                         timestampOffset\n                                     }) {\n        if (!captionArray) {\n            return;\n        }\n        const Cue = window.WebKitDataCue || window.VTTCue;\n        captionArray.forEach(caption => {\n            const track = caption.stream;\n            inbandTextTracks[track].addCue(new Cue(caption.startTime + timestampOffset, caption.endTime + timestampOffset, caption.text));\n        });\n    };\n    /**\n     * Define properties on a cue for backwards compatability,\n     * but warn the user that the way that they are using it\n     * is depricated and will be removed at a later date.\n     *\n     * @param {Cue} cue the cue to add the properties on\n     * @private\n     */\n\n    const deprecateOldCue = function (cue) {\n        Object.defineProperties(cue.frame, {\n            id: {\n                get() {\n                    videojs.log.warn('cue.frame.id is deprecated. Use cue.value.key instead.');\n                    return cue.value.key;\n                }\n            },\n            value: {\n                get() {\n                    videojs.log.warn('cue.frame.value is deprecated. Use cue.value.data instead.');\n                    return cue.value.data;\n                }\n            },\n            privateData: {\n                get() {\n                    videojs.log.warn('cue.frame.privateData is deprecated. Use cue.value.data instead.');\n                    return cue.value.data;\n                }\n            }\n        });\n    };\n    /**\n     * Add metadata text track data to a source handler given an array of metadata\n     *\n     * @param {Object}\n     *   @param {Object} inbandTextTracks the inband text tracks\n     *   @param {Array} metadataArray an array of meta data\n     *   @param {number} timestampOffset the timestamp offset of the source buffer\n     *   @param {number} videoDuration the duration of the video\n     * @private\n     */\n\n    const addMetadata = ({\n                             inbandTextTracks,\n                             metadataArray,\n                             timestampOffset,\n                             videoDuration\n                         }) => {\n        if (!metadataArray) {\n            return;\n        }\n        const Cue = window.WebKitDataCue || window.VTTCue;\n        const metadataTrack = inbandTextTracks.metadataTrack_;\n        if (!metadataTrack) {\n            return;\n        }\n        metadataArray.forEach(metadata => {\n            const time = metadata.cueTime + timestampOffset; // if time isn't a finite number between 0 and Infinity, like NaN,\n            // ignore this bit of metadata.\n            // This likely occurs when you have an non-timed ID3 tag like TIT2,\n            // which is the \"Title/Songname/Content description\" frame\n\n            if (typeof time !== 'number' || window.isNaN(time) || time < 0 || !(time < Infinity)) {\n                return;\n            }\n            metadata.frames.forEach(frame => {\n                const cue = new Cue(time, time, frame.value || frame.url || frame.data || '');\n                cue.frame = frame;\n                cue.value = frame;\n                deprecateOldCue(cue);\n                metadataTrack.addCue(cue);\n            });\n        });\n        if (!metadataTrack.cues || !metadataTrack.cues.length) {\n            return;\n        } // Updating the metadeta cues so that\n        // the endTime of each cue is the startTime of the next cue\n        // the endTime of last cue is the duration of the video\n\n        const cues = metadataTrack.cues;\n        const cuesArray = []; // Create a copy of the TextTrackCueList...\n        // ...disregarding cues with a falsey value\n\n        for (let i = 0; i < cues.length; i++) {\n            if (cues[i]) {\n                cuesArray.push(cues[i]);\n            }\n        } // Group cues by their startTime value\n\n        const cuesGroupedByStartTime = cuesArray.reduce((obj, cue) => {\n            const timeSlot = obj[cue.startTime] || [];\n            timeSlot.push(cue);\n            obj[cue.startTime] = timeSlot;\n            return obj;\n        }, {}); // Sort startTimes by ascending order\n\n        const sortedStartTimes = Object.keys(cuesGroupedByStartTime).sort((a, b) => Number(a) - Number(b)); // Map each cue group's endTime to the next group's startTime\n\n        sortedStartTimes.forEach((startTime, idx) => {\n            const cueGroup = cuesGroupedByStartTime[startTime];\n            const nextTime = Number(sortedStartTimes[idx + 1]) || videoDuration; // Map each cue's endTime the next group's startTime\n\n            cueGroup.forEach(cue => {\n                cue.endTime = nextTime;\n            });\n        });\n    };\n    /**\n     * Create metadata text track on video.js if it does not exist\n     *\n     * @param {Object} inbandTextTracks a reference to current inbandTextTracks\n     * @param {string} dispatchType the inband metadata track dispatch type\n     * @param {Object} tech the video.js tech\n     * @private\n     */\n\n    const createMetadataTrackIfNotExists = (inbandTextTracks, dispatchType, tech) => {\n        if (inbandTextTracks.metadataTrack_) {\n            return;\n        }\n        inbandTextTracks.metadataTrack_ = tech.addRemoteTextTrack({\n            kind: 'metadata',\n            label: 'Timed Metadata'\n        }, false).track;\n        inbandTextTracks.metadataTrack_.inBandMetadataTrackDispatchType = dispatchType;\n    };\n    /**\n     * Remove cues from a track on video.js.\n     *\n     * @param {Double} start start of where we should remove the cue\n     * @param {Double} end end of where the we should remove the cue\n     * @param {Object} track the text track to remove the cues from\n     * @private\n     */\n\n    const removeCuesFromTrack = function (start, end, track) {\n        let i;\n        let cue;\n        if (!track) {\n            return;\n        }\n        if (!track.cues) {\n            return;\n        }\n        i = track.cues.length;\n        while (i--) {\n            cue = track.cues[i]; // Remove any cue within the provided start and end time\n\n            if (cue.startTime >= start && cue.endTime <= end) {\n                track.removeCue(cue);\n            }\n        }\n    };\n    /**\n     * Remove duplicate cues from a track on video.js (a cue is considered a\n     * duplicate if it has the same time interval and text as another)\n     *\n     * @param {Object} track the text track to remove the duplicate cues from\n     * @private\n     */\n\n    const removeDuplicateCuesFromTrack = function (track) {\n        const cues = track.cues;\n        if (!cues) {\n            return;\n        }\n        for (let i = 0; i < cues.length; i++) {\n            const duplicates = [];\n            let occurrences = 0;\n            for (let j = 0; j < cues.length; j++) {\n                if (cues[i].startTime === cues[j].startTime && cues[i].endTime === cues[j].endTime && cues[i].text === cues[j].text) {\n                    occurrences++;\n                    if (occurrences > 1) {\n                        duplicates.push(cues[j]);\n                    }\n                }\n            }\n            if (duplicates.length) {\n                duplicates.forEach(dupe => track.removeCue(dupe));\n            }\n        }\n    };\n\n    /**\n     * Returns a list of gops in the buffer that have a pts value of 3 seconds or more in\n     * front of current time.\n     *\n     * @param {Array} buffer\n     *        The current buffer of gop information\n     * @param {number} currentTime\n     *        The current time\n     * @param {Double} mapping\n     *        Offset to map display time to stream presentation time\n     * @return {Array}\n     *         List of gops considered safe to append over\n     */\n\n    const gopsSafeToAlignWith = (buffer, currentTime, mapping) => {\n        if (typeof currentTime === 'undefined' || currentTime === null || !buffer.length) {\n            return [];\n        } // pts value for current time + 3 seconds to give a bit more wiggle room\n\n        const currentTimePts = Math.ceil((currentTime - mapping + 3) * clock_1);\n        let i;\n        for (i = 0; i < buffer.length; i++) {\n            if (buffer[i].pts > currentTimePts) {\n                break;\n            }\n        }\n        return buffer.slice(i);\n    };\n    /**\n     * Appends gop information (timing and byteLength) received by the transmuxer for the\n     * gops appended in the last call to appendBuffer\n     *\n     * @param {Array} buffer\n     *        The current buffer of gop information\n     * @param {Array} gops\n     *        List of new gop information\n     * @param {boolean} replace\n     *        If true, replace the buffer with the new gop information. If false, append the\n     *        new gop information to the buffer in the right location of time.\n     * @return {Array}\n     *         Updated list of gop information\n     */\n\n    const updateGopBuffer = (buffer, gops, replace) => {\n        if (!gops.length) {\n            return buffer;\n        }\n        if (replace) {\n            // If we are in safe append mode, then completely overwrite the gop buffer\n            // with the most recent appeneded data. This will make sure that when appending\n            // future segments, we only try to align with gops that are both ahead of current\n            // time and in the last segment appended.\n            return gops.slice();\n        }\n        const start = gops[0].pts;\n        let i = 0;\n        for (i; i < buffer.length; i++) {\n            if (buffer[i].pts >= start) {\n                break;\n            }\n        }\n        return buffer.slice(0, i).concat(gops);\n    };\n    /**\n     * Removes gop information in buffer that overlaps with provided start and end\n     *\n     * @param {Array} buffer\n     *        The current buffer of gop information\n     * @param {Double} start\n     *        position to start the remove at\n     * @param {Double} end\n     *        position to end the remove at\n     * @param {Double} mapping\n     *        Offset to map display time to stream presentation time\n     */\n\n    const removeGopBuffer = (buffer, start, end, mapping) => {\n        const startPts = Math.ceil((start - mapping) * clock_1);\n        const endPts = Math.ceil((end - mapping) * clock_1);\n        const updatedBuffer = buffer.slice();\n        let i = buffer.length;\n        while (i--) {\n            if (buffer[i].pts <= endPts) {\n                break;\n            }\n        }\n        if (i === -1) {\n            // no removal because end of remove range is before start of buffer\n            return updatedBuffer;\n        }\n        let j = i + 1;\n        while (j--) {\n            if (buffer[j].pts <= startPts) {\n                break;\n            }\n        } // clamp remove range start to 0 index\n\n        j = Math.max(j, 0);\n        updatedBuffer.splice(j, i - j + 1);\n        return updatedBuffer;\n    };\n    const shallowEqual = function (a, b) {\n        // if both are undefined\n        // or one or the other is undefined\n        // they are not equal\n        if (!a && !b || !a && b || a && !b) {\n            return false;\n        } // they are the same object and thus, equal\n\n        if (a === b) {\n            return true;\n        } // sort keys so we can make sure they have\n        // all the same keys later.\n\n        const akeys = Object.keys(a).sort();\n        const bkeys = Object.keys(b).sort(); // different number of keys, not equal\n\n        if (akeys.length !== bkeys.length) {\n            return false;\n        }\n        for (let i = 0; i < akeys.length; i++) {\n            const key = akeys[i]; // different sorted keys, not equal\n\n            if (key !== bkeys[i]) {\n                return false;\n            } // different values, not equal\n\n            if (a[key] !== b[key]) {\n                return false;\n            }\n        }\n        return true;\n    };\n\n    // https://www.w3.org/TR/WebIDL-1/#quotaexceedederror\n    const QUOTA_EXCEEDED_ERR = 22;\n\n    /**\n     * The segment loader has no recourse except to fetch a segment in the\n     * current playlist and use the internal timestamps in that segment to\n     * generate a syncPoint. This function returns a good candidate index\n     * for that process.\n     *\n     * @param {Array} segments - the segments array from a playlist.\n     * @return {number} An index of a segment from the playlist to load\n     */\n\n    const getSyncSegmentCandidate = function (currentTimeline, segments, targetTime) {\n        segments = segments || [];\n        const timelineSegments = [];\n        let time = 0;\n        for (let i = 0; i < segments.length; i++) {\n            const segment = segments[i];\n            if (currentTimeline === segment.timeline) {\n                timelineSegments.push(i);\n                time += segment.duration;\n                if (time > targetTime) {\n                    return i;\n                }\n            }\n        }\n        if (timelineSegments.length === 0) {\n            return 0;\n        } // default to the last timeline segment\n\n        return timelineSegments[timelineSegments.length - 1];\n    }; // In the event of a quota exceeded error, keep at least one second of back buffer. This\n    // number was arbitrarily chosen and may be updated in the future, but seemed reasonable\n    // as a start to prevent any potential issues with removing content too close to the\n    // playhead.\n\n    const MIN_BACK_BUFFER = 1; // in ms\n\n    const CHECK_BUFFER_DELAY = 500;\n    const finite = num => typeof num === 'number' && isFinite(num); // With most content hovering around 30fps, if a segment has a duration less than a half\n    // frame at 30fps or one frame at 60fps, the bandwidth and throughput calculations will\n    // not accurately reflect the rest of the content.\n\n    const MIN_SEGMENT_DURATION_TO_SAVE_STATS = 1 / 60;\n    const illegalMediaSwitch = (loaderType, startingMedia, trackInfo) => {\n        // Although these checks should most likely cover non 'main' types, for now it narrows\n        // the scope of our checks.\n        if (loaderType !== 'main' || !startingMedia || !trackInfo) {\n            return null;\n        }\n        if (!trackInfo.hasAudio && !trackInfo.hasVideo) {\n            return 'Neither audio nor video found in segment.';\n        }\n        if (startingMedia.hasVideo && !trackInfo.hasVideo) {\n            return 'Only audio found in segment when we expected video.' + ' We can\\'t switch to audio only from a stream that had video.' + ' To get rid of this message, please add codec information to the manifest.';\n        }\n        if (!startingMedia.hasVideo && trackInfo.hasVideo) {\n            return 'Video found in segment when we expected only audio.' + ' We can\\'t switch to a stream with video from an audio only stream.' + ' To get rid of this message, please add codec information to the manifest.';\n        }\n        return null;\n    };\n    /**\n     * Calculates a time value that is safe to remove from the back buffer without interrupting\n     * playback.\n     *\n     * @param {TimeRange} seekable\n     *        The current seekable range\n     * @param {number} currentTime\n     *        The current time of the player\n     * @param {number} targetDuration\n     *        The target duration of the current playlist\n     * @return {number}\n     *         Time that is safe to remove from the back buffer without interrupting playback\n     */\n\n    const safeBackBufferTrimTime = (seekable, currentTime, targetDuration) => {\n        // 30 seconds before the playhead provides a safe default for trimming.\n        //\n        // Choosing a reasonable default is particularly important for high bitrate content and\n        // VOD videos/live streams with large windows, as the buffer may end up overfilled and\n        // throw an APPEND_BUFFER_ERR.\n        let trimTime = currentTime - Config.BACK_BUFFER_LENGTH;\n        if (seekable.length) {\n            // Some live playlists may have a shorter window of content than the full allowed back\n            // buffer. For these playlists, don't save content that's no longer within the window.\n            trimTime = Math.max(trimTime, seekable.start(0));\n        } // Don't remove within target duration of the current time to avoid the possibility of\n        // removing the GOP currently being played, as removing it can cause playback stalls.\n\n        const maxTrimTime = currentTime - targetDuration;\n        return Math.min(maxTrimTime, trimTime);\n    };\n    const segmentInfoString = segmentInfo => {\n        const {\n            startOfSegment,\n            duration,\n            segment,\n            part,\n            playlist: {\n                mediaSequence: seq,\n                id,\n                segments = []\n            },\n            mediaIndex: index,\n            partIndex,\n            timeline\n        } = segmentInfo;\n        const segmentLen = segments.length - 1;\n        let selection = 'mediaIndex/partIndex increment';\n        if (segmentInfo.getMediaInfoForTime) {\n            selection = `getMediaInfoForTime (${segmentInfo.getMediaInfoForTime})`;\n        } else if (segmentInfo.isSyncRequest) {\n            selection = 'getSyncSegmentCandidate (isSyncRequest)';\n        }\n        if (segmentInfo.independent) {\n            selection += ` with independent ${segmentInfo.independent}`;\n        }\n        const hasPartIndex = typeof partIndex === 'number';\n        const name = segmentInfo.segment.uri ? 'segment' : 'pre-segment';\n        const zeroBasedPartCount = hasPartIndex ? getKnownPartCount({\n            preloadSegment: segment\n        }) - 1 : 0;\n        return `${name} [${seq + index}/${seq + segmentLen}]` + (hasPartIndex ? ` part [${partIndex}/${zeroBasedPartCount}]` : '') + ` segment start/end [${segment.start} => ${segment.end}]` + (hasPartIndex ? ` part start/end [${part.start} => ${part.end}]` : '') + ` startOfSegment [${startOfSegment}]` + ` duration [${duration}]` + ` timeline [${timeline}]` + ` selected by [${selection}]` + ` playlist [${id}]`;\n    };\n    const timingInfoPropertyForMedia = mediaType => `${mediaType}TimingInfo`;\n    /**\n     * Returns the timestamp offset to use for the segment.\n     *\n     * @param {number} segmentTimeline\n     *        The timeline of the segment\n     * @param {number} currentTimeline\n     *        The timeline currently being followed by the loader\n     * @param {number} startOfSegment\n     *        The estimated segment start\n     * @param {TimeRange[]} buffered\n     *        The loader's buffer\n     * @param {boolean} overrideCheck\n     *        If true, no checks are made to see if the timestamp offset value should be set,\n     *        but sets it directly to a value.\n     *\n     * @return {number|null}\n     *         Either a number representing a new timestamp offset, or null if the segment is\n     *         part of the same timeline\n     */\n\n    const timestampOffsetForSegment = ({\n                                           segmentTimeline,\n                                           currentTimeline,\n                                           startOfSegment,\n                                           buffered,\n                                           overrideCheck\n                                       }) => {\n        // Check to see if we are crossing a discontinuity to see if we need to set the\n        // timestamp offset on the transmuxer and source buffer.\n        //\n        // Previously, we changed the timestampOffset if the start of this segment was less than\n        // the currently set timestampOffset, but this isn't desirable as it can produce bad\n        // behavior, especially around long running live streams.\n        if (!overrideCheck && segmentTimeline === currentTimeline) {\n            return null;\n        } // When changing renditions, it's possible to request a segment on an older timeline. For\n        // instance, given two renditions with the following:\n        //\n        // #EXTINF:10\n        // segment1\n        // #EXT-X-DISCONTINUITY\n        // #EXTINF:10\n        // segment2\n        // #EXTINF:10\n        // segment3\n        //\n        // And the current player state:\n        //\n        // current time: 8\n        // buffer: 0 => 20\n        //\n        // The next segment on the current rendition would be segment3, filling the buffer from\n        // 20s onwards. However, if a rendition switch happens after segment2 was requested,\n        // then the next segment to be requested will be segment1 from the new rendition in\n        // order to fill time 8 and onwards. Using the buffered end would result in repeated\n        // content (since it would position segment1 of the new rendition starting at 20s). This\n        // case can be identified when the new segment's timeline is a prior value. Instead of\n        // using the buffered end, the startOfSegment can be used, which, hopefully, will be\n        // more accurate to the actual start time of the segment.\n\n        if (segmentTimeline < currentTimeline) {\n            return startOfSegment;\n        } // segmentInfo.startOfSegment used to be used as the timestamp offset, however, that\n        // value uses the end of the last segment if it is available. While this value\n        // should often be correct, it's better to rely on the buffered end, as the new\n        // content post discontinuity should line up with the buffered end as if it were\n        // time 0 for the new content.\n\n        return buffered.length ? buffered.end(buffered.length - 1) : startOfSegment;\n    };\n    /**\n     * Returns whether or not the loader should wait for a timeline change from the timeline\n     * change controller before processing the segment.\n     *\n     * Primary timing in VHS goes by video. This is different from most media players, as\n     * audio is more often used as the primary timing source. For the foreseeable future, VHS\n     * will continue to use video as the primary timing source, due to the current logic and\n     * expectations built around it.\n\n     * Since the timing follows video, in order to maintain sync, the video loader is\n     * responsible for setting both audio and video source buffer timestamp offsets.\n     *\n     * Setting different values for audio and video source buffers could lead to\n     * desyncing. The following examples demonstrate some of the situations where this\n     * distinction is important. Note that all of these cases involve demuxed content. When\n     * content is muxed, the audio and video are packaged together, therefore syncing\n     * separate media playlists is not an issue.\n     *\n     * CASE 1: Audio prepares to load a new timeline before video:\n     *\n     * Timeline:       0                 1\n     * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n     * Audio Loader:                     ^\n     * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n     * Video Loader              ^\n     *\n     * In the above example, the audio loader is preparing to load the 6th segment, the first\n     * after a discontinuity, while the video loader is still loading the 5th segment, before\n     * the discontinuity.\n     *\n     * If the audio loader goes ahead and loads and appends the 6th segment before the video\n     * loader crosses the discontinuity, then when appended, the 6th audio segment will use\n     * the timestamp offset from timeline 0. This will likely lead to desyncing. In addition,\n     * the audio loader must provide the audioAppendStart value to trim the content in the\n     * transmuxer, and that value relies on the audio timestamp offset. Since the audio\n     * timestamp offset is set by the video (main) loader, the audio loader shouldn't load the\n     * segment until that value is provided.\n     *\n     * CASE 2: Video prepares to load a new timeline before audio:\n     *\n     * Timeline:       0                 1\n     * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n     * Audio Loader:             ^\n     * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n     * Video Loader                      ^\n     *\n     * In the above example, the video loader is preparing to load the 6th segment, the first\n     * after a discontinuity, while the audio loader is still loading the 5th segment, before\n     * the discontinuity.\n     *\n     * If the video loader goes ahead and loads and appends the 6th segment, then once the\n     * segment is loaded and processed, both the video and audio timestamp offsets will be\n     * set, since video is used as the primary timing source. This is to ensure content lines\n     * up appropriately, as any modifications to the video timing are reflected by audio when\n     * the video loader sets the audio and video timestamp offsets to the same value. However,\n     * setting the timestamp offset for audio before audio has had a chance to change\n     * timelines will likely lead to desyncing, as the audio loader will append segment 5 with\n     * a timestamp intended to apply to segments from timeline 1 rather than timeline 0.\n     *\n     * CASE 3: When seeking, audio prepares to load a new timeline before video\n     *\n     * Timeline:       0                 1\n     * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n     * Audio Loader:           ^\n     * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n     * Video Loader            ^\n     *\n     * In the above example, both audio and video loaders are loading segments from timeline\n     * 0, but imagine that the seek originated from timeline 1.\n     *\n     * When seeking to a new timeline, the timestamp offset will be set based on the expected\n     * segment start of the loaded video segment. In order to maintain sync, the audio loader\n     * must wait for the video loader to load its segment and update both the audio and video\n     * timestamp offsets before it may load and append its own segment. This is the case\n     * whether the seek results in a mismatched segment request (e.g., the audio loader\n     * chooses to load segment 3 and the video loader chooses to load segment 4) or the\n     * loaders choose to load the same segment index from each playlist, as the segments may\n     * not be aligned perfectly, even for matching segment indexes.\n     *\n     * @param {Object} timelinechangeController\n     * @param {number} currentTimeline\n     *        The timeline currently being followed by the loader\n     * @param {number} segmentTimeline\n     *        The timeline of the segment being loaded\n     * @param {('main'|'audio')} loaderType\n     *        The loader type\n     * @param {boolean} audioDisabled\n     *        Whether the audio is disabled for the loader. This should only be true when the\n     *        loader may have muxed audio in its segment, but should not append it, e.g., for\n     *        the main loader when an alternate audio playlist is active.\n     *\n     * @return {boolean}\n     *         Whether the loader should wait for a timeline change from the timeline change\n     *         controller before processing the segment\n     */\n\n    const shouldWaitForTimelineChange = ({\n                                             timelineChangeController,\n                                             currentTimeline,\n                                             segmentTimeline,\n                                             loaderType,\n                                             audioDisabled\n                                         }) => {\n        if (currentTimeline === segmentTimeline) {\n            return false;\n        }\n        if (loaderType === 'audio') {\n            const lastMainTimelineChange = timelineChangeController.lastTimelineChange({\n                type: 'main'\n            }); // Audio loader should wait if:\n            //\n            // * main hasn't had a timeline change yet (thus has not loaded its first segment)\n            // * main hasn't yet changed to the timeline audio is looking to load\n\n            return !lastMainTimelineChange || lastMainTimelineChange.to !== segmentTimeline;\n        } // The main loader only needs to wait for timeline changes if there's demuxed audio.\n        // Otherwise, there's nothing to wait for, since audio would be muxed into the main\n        // loader's segments (or the content is audio/video only and handled by the main\n        // loader).\n\n        if (loaderType === 'main' && audioDisabled) {\n            const pendingAudioTimelineChange = timelineChangeController.pendingTimelineChange({\n                type: 'audio'\n            }); // Main loader should wait for the audio loader if audio is not pending a timeline\n            // change to the current timeline.\n            //\n            // Since the main loader is responsible for setting the timestamp offset for both\n            // audio and video, the main loader must wait for audio to be about to change to its\n            // timeline before setting the offset, otherwise, if audio is behind in loading,\n            // segments from the previous timeline would be adjusted by the new timestamp offset.\n            //\n            // This requirement means that video will not cross a timeline until the audio is\n            // about to cross to it, so that way audio and video will always cross the timeline\n            // together.\n            //\n            // In addition to normal timeline changes, these rules also apply to the start of a\n            // stream (going from a non-existent timeline, -1, to timeline 0). It's important\n            // that these rules apply to the first timeline change because if they did not, it's\n            // possible that the main loader will cross two timelines before the audio loader has\n            // crossed one. Logic may be implemented to handle the startup as a special case, but\n            // it's easier to simply treat all timeline changes the same.\n\n            if (pendingAudioTimelineChange && pendingAudioTimelineChange.to === segmentTimeline) {\n                return false;\n            }\n            return true;\n        }\n        return false;\n    };\n    const mediaDuration = timingInfos => {\n        let maxDuration = 0;\n        ['video', 'audio'].forEach(function (type) {\n            const typeTimingInfo = timingInfos[`${type}TimingInfo`];\n            if (!typeTimingInfo) {\n                return;\n            }\n            const {\n                start,\n                end\n            } = typeTimingInfo;\n            let duration;\n            if (typeof start === 'bigint' || typeof end === 'bigint') {\n                duration = window.BigInt(end) - window.BigInt(start);\n            } else if (typeof start === 'number' && typeof end === 'number') {\n                duration = end - start;\n            }\n            if (typeof duration !== 'undefined' && duration > maxDuration) {\n                maxDuration = duration;\n            }\n        }); // convert back to a number if it is lower than MAX_SAFE_INTEGER\n        // as we only need BigInt when we are above that.\n\n        if (typeof maxDuration === 'bigint' && maxDuration < Number.MAX_SAFE_INTEGER) {\n            maxDuration = Number(maxDuration);\n        }\n        return maxDuration;\n    };\n    const segmentTooLong = ({\n                                segmentDuration,\n                                maxDuration\n                            }) => {\n        // 0 duration segments are most likely due to metadata only segments or a lack of\n        // information.\n        if (!segmentDuration) {\n            return false;\n        } // For HLS:\n        //\n        // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.3.1\n        // The EXTINF duration of each Media Segment in the Playlist\n        // file, when rounded to the nearest integer, MUST be less than or equal\n        // to the target duration; longer segments can trigger playback stalls\n        // or other errors.\n        //\n        // For DASH, the mpd-parser uses the largest reported segment duration as the target\n        // duration. Although that reported duration is occasionally approximate (i.e., not\n        // exact), a strict check may report that a segment is too long more often in DASH.\n\n        return Math.round(segmentDuration) > maxDuration + TIME_FUDGE_FACTOR;\n    };\n    const getTroublesomeSegmentDurationMessage = (segmentInfo, sourceType) => {\n        // Right now we aren't following DASH's timing model exactly, so only perform\n        // this check for HLS content.\n        if (sourceType !== 'hls') {\n            return null;\n        }\n        const segmentDuration = mediaDuration({\n            audioTimingInfo: segmentInfo.audioTimingInfo,\n            videoTimingInfo: segmentInfo.videoTimingInfo\n        }); // Don't report if we lack information.\n        //\n        // If the segment has a duration of 0 it is either a lack of information or a\n        // metadata only segment and shouldn't be reported here.\n\n        if (!segmentDuration) {\n            return null;\n        }\n        const targetDuration = segmentInfo.playlist.targetDuration;\n        const isSegmentWayTooLong = segmentTooLong({\n            segmentDuration,\n            maxDuration: targetDuration * 2\n        });\n        const isSegmentSlightlyTooLong = segmentTooLong({\n            segmentDuration,\n            maxDuration: targetDuration\n        });\n        const segmentTooLongMessage = `Segment with index ${segmentInfo.mediaIndex} ` + `from playlist ${segmentInfo.playlist.id} ` + `has a duration of ${segmentDuration} ` + `when the reported duration is ${segmentInfo.duration} ` + `and the target duration is ${targetDuration}. ` + 'For HLS content, a duration in excess of the target duration may result in ' + 'playback issues. See the HLS specification section on EXT-X-TARGETDURATION for ' + 'more details: ' + 'https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.3.1';\n        if (isSegmentWayTooLong || isSegmentSlightlyTooLong) {\n            return {\n                severity: isSegmentWayTooLong ? 'warn' : 'info',\n                message: segmentTooLongMessage\n            };\n        }\n        return null;\n    };\n    /**\n     * An object that manages segment loading and appending.\n     *\n     * @class SegmentLoader\n     * @param {Object} options required and optional options\n     * @extends videojs.EventTarget\n     */\n\n    class SegmentLoader extends videojs.EventTarget {\n        constructor(settings, options = {}) {\n            super(); // check pre-conditions\n\n            if (!settings) {\n                throw new TypeError('Initialization settings are required');\n            }\n            if (typeof settings.currentTime !== 'function') {\n                throw new TypeError('No currentTime getter specified');\n            }\n            if (!settings.mediaSource) {\n                throw new TypeError('No MediaSource specified');\n            } // public properties\n\n            this.bandwidth = settings.bandwidth;\n            this.throughput = {\n                rate: 0,\n                count: 0\n            };\n            this.roundTrip = NaN;\n            this.resetStats_();\n            this.mediaIndex = null;\n            this.partIndex = null; // private settings\n\n            this.hasPlayed_ = settings.hasPlayed;\n            this.currentTime_ = settings.currentTime;\n            this.seekable_ = settings.seekable;\n            this.seeking_ = settings.seeking;\n            this.duration_ = settings.duration;\n            this.mediaSource_ = settings.mediaSource;\n            this.vhs_ = settings.vhs;\n            this.loaderType_ = settings.loaderType;\n            this.currentMediaInfo_ = void 0;\n            this.startingMediaInfo_ = void 0;\n            this.segmentMetadataTrack_ = settings.segmentMetadataTrack;\n            this.goalBufferLength_ = settings.goalBufferLength;\n            this.sourceType_ = settings.sourceType;\n            this.sourceUpdater_ = settings.sourceUpdater;\n            this.inbandTextTracks_ = settings.inbandTextTracks;\n            this.state_ = 'INIT';\n            this.timelineChangeController_ = settings.timelineChangeController;\n            this.shouldSaveSegmentTimingInfo_ = true;\n            this.parse708captions_ = settings.parse708captions;\n            this.useDtsForTimestampOffset_ = settings.useDtsForTimestampOffset;\n            this.captionServices_ = settings.captionServices;\n            this.exactManifestTimings = settings.exactManifestTimings; // private instance variables\n\n            this.checkBufferTimeout_ = null;\n            this.error_ = void 0;\n            this.currentTimeline_ = -1;\n            this.pendingSegment_ = null;\n            this.xhrOptions_ = null;\n            this.pendingSegments_ = [];\n            this.audioDisabled_ = false;\n            this.isPendingTimestampOffset_ = false; // TODO possibly move gopBuffer and timeMapping info to a separate controller\n\n            this.gopBuffer_ = [];\n            this.timeMapping_ = 0;\n            this.safeAppend_ = videojs.browser.IE_VERSION >= 11;\n            this.appendInitSegment_ = {\n                audio: true,\n                video: true\n            };\n            this.playlistOfLastInitSegment_ = {\n                audio: null,\n                video: null\n            };\n            this.callQueue_ = []; // If the segment loader prepares to load a segment, but does not have enough\n            // information yet to start the loading process (e.g., if the audio loader wants to\n            // load a segment from the next timeline but the main loader hasn't yet crossed that\n            // timeline), then the load call will be added to the queue until it is ready to be\n            // processed.\n\n            this.loadQueue_ = [];\n            this.metadataQueue_ = {\n                id3: [],\n                caption: []\n            };\n            this.waitingOnRemove_ = false;\n            this.quotaExceededErrorRetryTimeout_ = null; // Fragmented mp4 playback\n\n            this.activeInitSegmentId_ = null;\n            this.initSegments_ = {}; // HLSe playback\n\n            this.cacheEncryptionKeys_ = settings.cacheEncryptionKeys;\n            this.keyCache_ = {};\n            this.decrypter_ = settings.decrypter; // Manages the tracking and generation of sync-points, mappings\n            // between a time in the display time and a segment index within\n            // a playlist\n\n            this.syncController_ = settings.syncController;\n            this.syncPoint_ = {\n                segmentIndex: 0,\n                time: 0\n            };\n            this.transmuxer_ = this.createTransmuxer_();\n            this.triggerSyncInfoUpdate_ = () => this.trigger('syncinfoupdate');\n            this.syncController_.on('syncinfoupdate', this.triggerSyncInfoUpdate_);\n            this.mediaSource_.addEventListener('sourceopen', () => {\n                if (!this.isEndOfStream_()) {\n                    this.ended_ = false;\n                }\n            }); // ...for determining the fetch location\n\n            this.fetchAtBuffer_ = false;\n            this.logger_ = logger(`SegmentLoader[${this.loaderType_}]`);\n            Object.defineProperty(this, 'state', {\n                get() {\n                    return this.state_;\n                },\n                set(newState) {\n                    if (newState !== this.state_) {\n                        this.logger_(`${this.state_} -> ${newState}`);\n                        this.state_ = newState;\n                        this.trigger('statechange');\n                    }\n                }\n            });\n            this.sourceUpdater_.on('ready', () => {\n                if (this.hasEnoughInfoToAppend_()) {\n                    this.processCallQueue_();\n                }\n            }); // Only the main loader needs to listen for pending timeline changes, as the main\n            // loader should wait for audio to be ready to change its timeline so that both main\n            // and audio timelines change together. For more details, see the\n            // shouldWaitForTimelineChange function.\n\n            if (this.loaderType_ === 'main') {\n                this.timelineChangeController_.on('pendingtimelinechange', () => {\n                    if (this.hasEnoughInfoToAppend_()) {\n                        this.processCallQueue_();\n                    }\n                });\n            } // The main loader only listens on pending timeline changes, but the audio loader,\n            // since its loads follow main, needs to listen on timeline changes. For more details,\n            // see the shouldWaitForTimelineChange function.\n\n            if (this.loaderType_ === 'audio') {\n                this.timelineChangeController_.on('timelinechange', () => {\n                    if (this.hasEnoughInfoToLoad_()) {\n                        this.processLoadQueue_();\n                    }\n                    if (this.hasEnoughInfoToAppend_()) {\n                        this.processCallQueue_();\n                    }\n                });\n            }\n        }\n        createTransmuxer_() {\n            return segmentTransmuxer.createTransmuxer({\n                remux: false,\n                alignGopsAtEnd: this.safeAppend_,\n                keepOriginalTimestamps: true,\n                parse708captions: this.parse708captions_,\n                captionServices: this.captionServices_\n            });\n        }\n        /**\n         * reset all of our media stats\n         *\n         * @private\n         */\n\n        resetStats_() {\n            this.mediaBytesTransferred = 0;\n            this.mediaRequests = 0;\n            this.mediaRequestsAborted = 0;\n            this.mediaRequestsTimedout = 0;\n            this.mediaRequestsErrored = 0;\n            this.mediaTransferDuration = 0;\n            this.mediaSecondsLoaded = 0;\n            this.mediaAppends = 0;\n        }\n        /**\n         * dispose of the SegmentLoader and reset to the default state\n         */\n\n        dispose() {\n            this.trigger('dispose');\n            this.state = 'DISPOSED';\n            this.pause();\n            this.abort_();\n            if (this.transmuxer_) {\n                this.transmuxer_.terminate();\n            }\n            this.resetStats_();\n            if (this.checkBufferTimeout_) {\n                window.clearTimeout(this.checkBufferTimeout_);\n            }\n            if (this.syncController_ && this.triggerSyncInfoUpdate_) {\n                this.syncController_.off('syncinfoupdate', this.triggerSyncInfoUpdate_);\n            }\n            this.off();\n        }\n        setAudio(enable) {\n            this.audioDisabled_ = !enable;\n            if (enable) {\n                this.appendInitSegment_.audio = true;\n            } else {\n                // remove current track audio if it gets disabled\n                this.sourceUpdater_.removeAudio(0, this.duration_());\n            }\n        }\n        /**\n         * abort anything that is currently doing on with the SegmentLoader\n         * and reset to a default state\n         */\n\n        abort() {\n            if (this.state !== 'WAITING') {\n                if (this.pendingSegment_) {\n                    this.pendingSegment_ = null;\n                }\n                return;\n            }\n            this.abort_(); // We aborted the requests we were waiting on, so reset the loader's state to READY\n            // since we are no longer \"waiting\" on any requests. XHR callback is not always run\n            // when the request is aborted. This will prevent the loader from being stuck in the\n            // WAITING state indefinitely.\n\n            this.state = 'READY'; // don't wait for buffer check timeouts to begin fetching the\n            // next segment\n\n            if (!this.paused()) {\n                this.monitorBuffer_();\n            }\n        }\n        /**\n         * abort all pending xhr requests and null any pending segements\n         *\n         * @private\n         */\n\n        abort_() {\n            if (this.pendingSegment_ && this.pendingSegment_.abortRequests) {\n                this.pendingSegment_.abortRequests();\n            } // clear out the segment being processed\n\n            this.pendingSegment_ = null;\n            this.callQueue_ = [];\n            this.loadQueue_ = [];\n            this.metadataQueue_.id3 = [];\n            this.metadataQueue_.caption = [];\n            this.timelineChangeController_.clearPendingTimelineChange(this.loaderType_);\n            this.waitingOnRemove_ = false;\n            window.clearTimeout(this.quotaExceededErrorRetryTimeout_);\n            this.quotaExceededErrorRetryTimeout_ = null;\n        }\n        checkForAbort_(requestId) {\n            // If the state is APPENDING, then aborts will not modify the state, meaning the first\n            // callback that happens should reset the state to READY so that loading can continue.\n            if (this.state === 'APPENDING' && !this.pendingSegment_) {\n                this.state = 'READY';\n                return true;\n            }\n            if (!this.pendingSegment_ || this.pendingSegment_.requestId !== requestId) {\n                return true;\n            }\n            return false;\n        }\n        /**\n         * set an error on the segment loader and null out any pending segements\n         *\n         * @param {Error} error the error to set on the SegmentLoader\n         * @return {Error} the error that was set or that is currently set\n         */\n\n        error(error) {\n            if (typeof error !== 'undefined') {\n                this.logger_('error occurred:', error);\n                this.error_ = error;\n            }\n            this.pendingSegment_ = null;\n            return this.error_;\n        }\n        endOfStream() {\n            this.ended_ = true;\n            if (this.transmuxer_) {\n                // need to clear out any cached data to prepare for the new segment\n                segmentTransmuxer.reset(this.transmuxer_);\n            }\n            this.gopBuffer_.length = 0;\n            this.pause();\n            this.trigger('ended');\n        }\n        /**\n         * Indicates which time ranges are buffered\n         *\n         * @return {TimeRange}\n         *         TimeRange object representing the current buffered ranges\n         */\n\n        buffered_() {\n            const trackInfo = this.getMediaInfo_();\n            if (!this.sourceUpdater_ || !trackInfo) {\n                return createTimeRanges();\n            }\n            if (this.loaderType_ === 'main') {\n                const {\n                    hasAudio,\n                    hasVideo,\n                    isMuxed\n                } = trackInfo;\n                if (hasVideo && hasAudio && !this.audioDisabled_ && !isMuxed) {\n                    return this.sourceUpdater_.buffered();\n                }\n                if (hasVideo) {\n                    return this.sourceUpdater_.videoBuffered();\n                }\n            } // One case that can be ignored for now is audio only with alt audio,\n            // as we don't yet have proper support for that.\n\n            return this.sourceUpdater_.audioBuffered();\n        }\n        /**\n         * Gets and sets init segment for the provided map\n         *\n         * @param {Object} map\n         *        The map object representing the init segment to get or set\n         * @param {boolean=} set\n         *        If true, the init segment for the provided map should be saved\n         * @return {Object}\n         *         map object for desired init segment\n         */\n\n        initSegmentForMap(map, set = false) {\n            if (!map) {\n                return null;\n            }\n            const id = initSegmentId(map);\n            let storedMap = this.initSegments_[id];\n            if (set && !storedMap && map.bytes) {\n                this.initSegments_[id] = storedMap = {\n                    resolvedUri: map.resolvedUri,\n                    byterange: map.byterange,\n                    bytes: map.bytes,\n                    tracks: map.tracks,\n                    timescales: map.timescales\n                };\n            }\n            return storedMap || map;\n        }\n        /**\n         * Gets and sets key for the provided key\n         *\n         * @param {Object} key\n         *        The key object representing the key to get or set\n         * @param {boolean=} set\n         *        If true, the key for the provided key should be saved\n         * @return {Object}\n         *         Key object for desired key\n         */\n\n        segmentKey(key, set = false) {\n            if (!key) {\n                return null;\n            }\n            const id = segmentKeyId(key);\n            let storedKey = this.keyCache_[id]; // TODO: We should use the HTTP Expires header to invalidate our cache per\n            // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-6.2.3\n\n            if (this.cacheEncryptionKeys_ && set && !storedKey && key.bytes) {\n                this.keyCache_[id] = storedKey = {\n                    resolvedUri: key.resolvedUri,\n                    bytes: key.bytes\n                };\n            }\n            const result = {\n                resolvedUri: (storedKey || key).resolvedUri\n            };\n            if (storedKey) {\n                result.bytes = storedKey.bytes;\n            }\n            return result;\n        }\n        /**\n         * Returns true if all configuration required for loading is present, otherwise false.\n         *\n         * @return {boolean} True if the all configuration is ready for loading\n         * @private\n         */\n\n        couldBeginLoading_() {\n            return this.playlist_ && !this.paused();\n        }\n        /**\n         * load a playlist and start to fill the buffer\n         */\n\n        load() {\n            // un-pause\n            this.monitorBuffer_(); // if we don't have a playlist yet, keep waiting for one to be\n            // specified\n\n            if (!this.playlist_) {\n                return;\n            } // if all the configuration is ready, initialize and begin loading\n\n            if (this.state === 'INIT' && this.couldBeginLoading_()) {\n                return this.init_();\n            } // if we're in the middle of processing a segment already, don't\n            // kick off an additional segment request\n\n            if (!this.couldBeginLoading_() || this.state !== 'READY' && this.state !== 'INIT') {\n                return;\n            }\n            this.state = 'READY';\n        }\n        /**\n         * Once all the starting parameters have been specified, begin\n         * operation. This method should only be invoked from the INIT\n         * state.\n         *\n         * @private\n         */\n\n        init_() {\n            this.state = 'READY'; // if this is the audio segment loader, and it hasn't been inited before, then any old\n            // audio data from the muxed content should be removed\n\n            this.resetEverything();\n            return this.monitorBuffer_();\n        }\n        /**\n         * set a playlist on the segment loader\n         *\n         * @param {PlaylistLoader} media the playlist to set on the segment loader\n         */\n\n        playlist(newPlaylist, options = {}) {\n            if (!newPlaylist) {\n                return;\n            }\n            const oldPlaylist = this.playlist_;\n            const segmentInfo = this.pendingSegment_;\n            this.playlist_ = newPlaylist;\n            this.xhrOptions_ = options; // when we haven't started playing yet, the start of a live playlist\n            // is always our zero-time so force a sync update each time the playlist\n            // is refreshed from the server\n            //\n            // Use the INIT state to determine if playback has started, as the playlist sync info\n            // should be fixed once requests begin (as sync points are generated based on sync\n            // info), but not before then.\n\n            if (this.state === 'INIT') {\n                newPlaylist.syncInfo = {\n                    mediaSequence: newPlaylist.mediaSequence,\n                    time: 0\n                }; // Setting the date time mapping means mapping the program date time (if available)\n                // to time 0 on the player's timeline. The playlist's syncInfo serves a similar\n                // purpose, mapping the initial mediaSequence to time zero. Since the syncInfo can\n                // be updated as the playlist is refreshed before the loader starts loading, the\n                // program date time mapping needs to be updated as well.\n                //\n                // This mapping is only done for the main loader because a program date time should\n                // map equivalently between playlists.\n\n                if (this.loaderType_ === 'main') {\n                    this.syncController_.setDateTimeMappingForStart(newPlaylist);\n                }\n            }\n            let oldId = null;\n            if (oldPlaylist) {\n                if (oldPlaylist.id) {\n                    oldId = oldPlaylist.id;\n                } else if (oldPlaylist.uri) {\n                    oldId = oldPlaylist.uri;\n                }\n            }\n            this.logger_(`playlist update [${oldId} => ${newPlaylist.id || newPlaylist.uri}]`); // in VOD, this is always a rendition switch (or we updated our syncInfo above)\n            // in LIVE, we always want to update with new playlists (including refreshes)\n\n            this.trigger('syncinfoupdate'); // if we were unpaused but waiting for a playlist, start\n            // buffering now\n\n            if (this.state === 'INIT' && this.couldBeginLoading_()) {\n                return this.init_();\n            }\n            if (!oldPlaylist || oldPlaylist.uri !== newPlaylist.uri) {\n                if (this.mediaIndex !== null) {\n                    // we must reset/resync the segment loader when we switch renditions and\n                    // the segment loader is already synced to the previous rendition\n                    // on playlist changes we want it to be possible to fetch\n                    // at the buffer for vod but not for live. So we use resetLoader\n                    // for live and resyncLoader for vod. We want this because\n                    // if a playlist uses independent and non-independent segments/parts the\n                    // buffer may not accurately reflect the next segment that we should try\n                    // downloading.\n                    if (!newPlaylist.endList) {\n                        this.resetLoader();\n                    } else {\n                        this.resyncLoader();\n                    }\n                }\n                this.currentMediaInfo_ = void 0;\n                this.trigger('playlistupdate'); // the rest of this function depends on `oldPlaylist` being defined\n\n                return;\n            } // we reloaded the same playlist so we are in a live scenario\n            // and we will likely need to adjust the mediaIndex\n\n            const mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence;\n            this.logger_(`live window shift [${mediaSequenceDiff}]`); // update the mediaIndex on the SegmentLoader\n            // this is important because we can abort a request and this value must be\n            // equal to the last appended mediaIndex\n\n            if (this.mediaIndex !== null) {\n                this.mediaIndex -= mediaSequenceDiff; // this can happen if we are going to load the first segment, but get a playlist\n                // update during that. mediaIndex would go from 0 to -1 if mediaSequence in the\n                // new playlist was incremented by 1.\n\n                if (this.mediaIndex < 0) {\n                    this.mediaIndex = null;\n                    this.partIndex = null;\n                } else {\n                    const segment = this.playlist_.segments[this.mediaIndex]; // partIndex should remain the same for the same segment\n                    // unless parts fell off of the playlist for this segment.\n                    // In that case we need to reset partIndex and resync\n\n                    if (this.partIndex && (!segment.parts || !segment.parts.length || !segment.parts[this.partIndex])) {\n                        const mediaIndex = this.mediaIndex;\n                        this.logger_(`currently processing part (index ${this.partIndex}) no longer exists.`);\n                        this.resetLoader(); // We want to throw away the partIndex and the data associated with it,\n                        // as the part was dropped from our current playlists segment.\n                        // The mediaIndex will still be valid so keep that around.\n\n                        this.mediaIndex = mediaIndex;\n                    }\n                }\n            } // update the mediaIndex on the SegmentInfo object\n            // this is important because we will update this.mediaIndex with this value\n            // in `handleAppendsDone_` after the segment has been successfully appended\n\n            if (segmentInfo) {\n                segmentInfo.mediaIndex -= mediaSequenceDiff;\n                if (segmentInfo.mediaIndex < 0) {\n                    segmentInfo.mediaIndex = null;\n                    segmentInfo.partIndex = null;\n                } else {\n                    // we need to update the referenced segment so that timing information is\n                    // saved for the new playlist's segment, however, if the segment fell off the\n                    // playlist, we can leave the old reference and just lose the timing info\n                    if (segmentInfo.mediaIndex >= 0) {\n                        segmentInfo.segment = newPlaylist.segments[segmentInfo.mediaIndex];\n                    }\n                    if (segmentInfo.partIndex >= 0 && segmentInfo.segment.parts) {\n                        segmentInfo.part = segmentInfo.segment.parts[segmentInfo.partIndex];\n                    }\n                }\n            }\n            this.syncController_.saveExpiredSegmentInfo(oldPlaylist, newPlaylist);\n        }\n        /**\n         * Prevent the loader from fetching additional segments. If there\n         * is a segment request outstanding, it will finish processing\n         * before the loader halts. A segment loader can be unpaused by\n         * calling load().\n         */\n\n        pause() {\n            if (this.checkBufferTimeout_) {\n                window.clearTimeout(this.checkBufferTimeout_);\n                this.checkBufferTimeout_ = null;\n            }\n        }\n        /**\n         * Returns whether the segment loader is fetching additional\n         * segments when given the opportunity. This property can be\n         * modified through calls to pause() and load().\n         */\n\n        paused() {\n            return this.checkBufferTimeout_ === null;\n        }\n        /**\n         * Delete all the buffered data and reset the SegmentLoader\n         *\n         * @param {Function} [done] an optional callback to be executed when the remove\n         * operation is complete\n         */\n\n        resetEverything(done) {\n            this.ended_ = false;\n            this.activeInitSegmentId_ = null;\n            this.appendInitSegment_ = {\n                audio: true,\n                video: true\n            };\n            this.resetLoader(); // remove from 0, the earliest point, to Infinity, to signify removal of everything.\n            // VTT Segment Loader doesn't need to do anything but in the regular SegmentLoader,\n            // we then clamp the value to duration if necessary.\n\n            this.remove(0, Infinity, done); // clears fmp4 captions\n\n            if (this.transmuxer_) {\n                this.transmuxer_.postMessage({\n                    action: 'clearAllMp4Captions'\n                }); // reset the cache in the transmuxer\n\n                this.transmuxer_.postMessage({\n                    action: 'reset'\n                });\n            }\n        }\n        /**\n         * Force the SegmentLoader to resync and start loading around the currentTime instead\n         * of starting at the end of the buffer\n         *\n         * Useful for fast quality changes\n         */\n\n        resetLoader() {\n            this.fetchAtBuffer_ = false;\n            this.resyncLoader();\n        }\n        /**\n         * Force the SegmentLoader to restart synchronization and make a conservative guess\n         * before returning to the simple walk-forward method\n         */\n\n        resyncLoader() {\n            if (this.transmuxer_) {\n                // need to clear out any cached data to prepare for the new segment\n                segmentTransmuxer.reset(this.transmuxer_);\n            }\n            this.mediaIndex = null;\n            this.partIndex = null;\n            this.syncPoint_ = null;\n            this.isPendingTimestampOffset_ = false;\n            this.callQueue_ = [];\n            this.loadQueue_ = [];\n            this.metadataQueue_.id3 = [];\n            this.metadataQueue_.caption = [];\n            this.abort();\n            if (this.transmuxer_) {\n                this.transmuxer_.postMessage({\n                    action: 'clearParsedMp4Captions'\n                });\n            }\n        }\n        /**\n         * Remove any data in the source buffer between start and end times\n         *\n         * @param {number} start - the start time of the region to remove from the buffer\n         * @param {number} end - the end time of the region to remove from the buffer\n         * @param {Function} [done] - an optional callback to be executed when the remove\n         * @param {boolean} force - force all remove operations to happen\n         * operation is complete\n         */\n\n        remove(start, end, done = () => {}, force = false) {\n            // clamp end to duration if we need to remove everything.\n            // This is due to a browser bug that causes issues if we remove to Infinity.\n            // videojs/videojs-contrib-hls#1225\n            if (end === Infinity) {\n                end = this.duration_();\n            } // skip removes that would throw an error\n            // commonly happens during a rendition switch at the start of a video\n            // from start 0 to end 0\n\n            if (end <= start) {\n                this.logger_('skipping remove because end ${end} is <= start ${start}');\n                return;\n            }\n            if (!this.sourceUpdater_ || !this.getMediaInfo_()) {\n                this.logger_('skipping remove because no source updater or starting media info'); // nothing to remove if we haven't processed any media\n\n                return;\n            } // set it to one to complete this function's removes\n\n            let removesRemaining = 1;\n            const removeFinished = () => {\n                removesRemaining--;\n                if (removesRemaining === 0) {\n                    done();\n                }\n            };\n            if (force || !this.audioDisabled_) {\n                removesRemaining++;\n                this.sourceUpdater_.removeAudio(start, end, removeFinished);\n            } // While it would be better to only remove video if the main loader has video, this\n            // should be safe with audio only as removeVideo will call back even if there's no\n            // video buffer.\n            //\n            // In theory we can check to see if there's video before calling the remove, but in\n            // the event that we're switching between renditions and from video to audio only\n            // (when we add support for that), we may need to clear the video contents despite\n            // what the new media will contain.\n\n            if (force || this.loaderType_ === 'main') {\n                this.gopBuffer_ = removeGopBuffer(this.gopBuffer_, start, end, this.timeMapping_);\n                removesRemaining++;\n                this.sourceUpdater_.removeVideo(start, end, removeFinished);\n            } // remove any captions and ID3 tags\n\n            for (const track in this.inbandTextTracks_) {\n                removeCuesFromTrack(start, end, this.inbandTextTracks_[track]);\n            }\n            removeCuesFromTrack(start, end, this.segmentMetadataTrack_); // finished this function's removes\n\n            removeFinished();\n        }\n        /**\n         * (re-)schedule monitorBufferTick_ to run as soon as possible\n         *\n         * @private\n         */\n\n        monitorBuffer_() {\n            if (this.checkBufferTimeout_) {\n                window.clearTimeout(this.checkBufferTimeout_);\n            }\n            this.checkBufferTimeout_ = window.setTimeout(this.monitorBufferTick_.bind(this), 1);\n        }\n        /**\n         * As long as the SegmentLoader is in the READY state, periodically\n         * invoke fillBuffer_().\n         *\n         * @private\n         */\n\n        monitorBufferTick_() {\n            if (this.state === 'READY') {\n                this.fillBuffer_();\n            }\n            if (this.checkBufferTimeout_) {\n                window.clearTimeout(this.checkBufferTimeout_);\n            }\n            this.checkBufferTimeout_ = window.setTimeout(this.monitorBufferTick_.bind(this), CHECK_BUFFER_DELAY);\n        }\n        /**\n         * fill the buffer with segements unless the sourceBuffers are\n         * currently updating\n         *\n         * Note: this function should only ever be called by monitorBuffer_\n         * and never directly\n         *\n         * @private\n         */\n\n        fillBuffer_() {\n            // TODO since the source buffer maintains a queue, and we shouldn't call this function\n            // except when we're ready for the next segment, this check can most likely be removed\n            if (this.sourceUpdater_.updating()) {\n                return;\n            } // see if we need to begin loading immediately\n\n            const segmentInfo = this.chooseNextRequest_();\n            if (!segmentInfo) {\n                return;\n            }\n            if (typeof segmentInfo.timestampOffset === 'number') {\n                this.isPendingTimestampOffset_ = false;\n                this.timelineChangeController_.pendingTimelineChange({\n                    type: this.loaderType_,\n                    from: this.currentTimeline_,\n                    to: segmentInfo.timeline\n                });\n            }\n            this.loadSegment_(segmentInfo);\n        }\n        /**\n         * Determines if we should call endOfStream on the media source based\n         * on the state of the buffer or if appened segment was the final\n         * segment in the playlist.\n         *\n         * @param {number} [mediaIndex] the media index of segment we last appended\n         * @param {Object} [playlist] a media playlist object\n         * @return {boolean} do we need to call endOfStream on the MediaSource\n         */\n\n        isEndOfStream_(mediaIndex = this.mediaIndex, playlist = this.playlist_, partIndex = this.partIndex) {\n            if (!playlist || !this.mediaSource_) {\n                return false;\n            }\n            const segment = typeof mediaIndex === 'number' && playlist.segments[mediaIndex]; // mediaIndex is zero based but length is 1 based\n\n            const appendedLastSegment = mediaIndex + 1 === playlist.segments.length; // true if there are no parts, or this is the last part.\n\n            const appendedLastPart = !segment || !segment.parts || partIndex + 1 === segment.parts.length; // if we've buffered to the end of the video, we need to call endOfStream\n            // so that MediaSources can trigger the `ended` event when it runs out of\n            // buffered data instead of waiting for me\n\n            return playlist.endList && this.mediaSource_.readyState === 'open' && appendedLastSegment && appendedLastPart;\n        }\n        /**\n         * Determines what request should be made given current segment loader state.\n         *\n         * @return {Object} a request object that describes the segment/part to load\n         */\n\n        chooseNextRequest_() {\n            const buffered = this.buffered_();\n            const bufferedEnd = lastBufferedEnd(buffered) || 0;\n            const bufferedTime = timeAheadOf(buffered, this.currentTime_());\n            const preloaded = !this.hasPlayed_() && bufferedTime >= 1;\n            const haveEnoughBuffer = bufferedTime >= this.goalBufferLength_();\n            const segments = this.playlist_.segments; // return no segment if:\n            // 1. we don't have segments\n            // 2. The video has not yet played and we already downloaded a segment\n            // 3. we already have enough buffered time\n\n            if (!segments.length || preloaded || haveEnoughBuffer) {\n                return null;\n            }\n            this.syncPoint_ = this.syncPoint_ || this.syncController_.getSyncPoint(this.playlist_, this.duration_(), this.currentTimeline_, this.currentTime_());\n            const next = {\n                partIndex: null,\n                mediaIndex: null,\n                startOfSegment: null,\n                playlist: this.playlist_,\n                isSyncRequest: Boolean(!this.syncPoint_)\n            };\n            if (next.isSyncRequest) {\n                next.mediaIndex = getSyncSegmentCandidate(this.currentTimeline_, segments, bufferedEnd);\n            } else if (this.mediaIndex !== null) {\n                const segment = segments[this.mediaIndex];\n                const partIndex = typeof this.partIndex === 'number' ? this.partIndex : -1;\n                next.startOfSegment = segment.end ? segment.end : bufferedEnd;\n                if (segment.parts && segment.parts[partIndex + 1]) {\n                    next.mediaIndex = this.mediaIndex;\n                    next.partIndex = partIndex + 1;\n                } else {\n                    next.mediaIndex = this.mediaIndex + 1;\n                }\n            } else {\n                // Find the segment containing the end of the buffer or current time.\n                const {\n                    segmentIndex,\n                    startTime,\n                    partIndex\n                } = Playlist.getMediaInfoForTime({\n                    exactManifestTimings: this.exactManifestTimings,\n                    playlist: this.playlist_,\n                    currentTime: this.fetchAtBuffer_ ? bufferedEnd : this.currentTime_(),\n                    startingPartIndex: this.syncPoint_.partIndex,\n                    startingSegmentIndex: this.syncPoint_.segmentIndex,\n                    startTime: this.syncPoint_.time\n                });\n                next.getMediaInfoForTime = this.fetchAtBuffer_ ? `bufferedEnd ${bufferedEnd}` : `currentTime ${this.currentTime_()}`;\n                next.mediaIndex = segmentIndex;\n                next.startOfSegment = startTime;\n                next.partIndex = partIndex;\n            }\n            const nextSegment = segments[next.mediaIndex];\n            let nextPart = nextSegment && typeof next.partIndex === 'number' && nextSegment.parts && nextSegment.parts[next.partIndex]; // if the next segment index is invalid or\n            // the next partIndex is invalid do not choose a next segment.\n\n            if (!nextSegment || typeof next.partIndex === 'number' && !nextPart) {\n                return null;\n            } // if the next segment has parts, and we don't have a partIndex.\n            // Set partIndex to 0\n\n            if (typeof next.partIndex !== 'number' && nextSegment.parts) {\n                next.partIndex = 0;\n                nextPart = nextSegment.parts[0];\n            } // if we have no buffered data then we need to make sure\n            // that the next part we append is \"independent\" if possible.\n            // So we check if the previous part is independent, and request\n            // it if it is.\n\n            if (!bufferedTime && nextPart && !nextPart.independent) {\n                if (next.partIndex === 0) {\n                    const lastSegment = segments[next.mediaIndex - 1];\n                    const lastSegmentLastPart = lastSegment.parts && lastSegment.parts.length && lastSegment.parts[lastSegment.parts.length - 1];\n                    if (lastSegmentLastPart && lastSegmentLastPart.independent) {\n                        next.mediaIndex -= 1;\n                        next.partIndex = lastSegment.parts.length - 1;\n                        next.independent = 'previous segment';\n                    }\n                } else if (nextSegment.parts[next.partIndex - 1].independent) {\n                    next.partIndex -= 1;\n                    next.independent = 'previous part';\n                }\n            }\n            const ended = this.mediaSource_ && this.mediaSource_.readyState === 'ended'; // do not choose a next segment if all of the following:\n            // 1. this is the last segment in the playlist\n            // 2. end of stream has been called on the media source already\n            // 3. the player is not seeking\n\n            if (next.mediaIndex >= segments.length - 1 && ended && !this.seeking_()) {\n                return null;\n            }\n            return this.generateSegmentInfo_(next);\n        }\n        generateSegmentInfo_(options) {\n            const {\n                independent,\n                playlist,\n                mediaIndex,\n                startOfSegment,\n                isSyncRequest,\n                partIndex,\n                forceTimestampOffset,\n                getMediaInfoForTime\n            } = options;\n            const segment = playlist.segments[mediaIndex];\n            const part = typeof partIndex === 'number' && segment.parts[partIndex];\n            const segmentInfo = {\n                requestId: 'segment-loader-' + Math.random(),\n                // resolve the segment URL relative to the playlist\n                uri: part && part.resolvedUri || segment.resolvedUri,\n                // the segment's mediaIndex at the time it was requested\n                mediaIndex,\n                partIndex: part ? partIndex : null,\n                // whether or not to update the SegmentLoader's state with this\n                // segment's mediaIndex\n                isSyncRequest,\n                startOfSegment,\n                // the segment's playlist\n                playlist,\n                // unencrypted bytes of the segment\n                bytes: null,\n                // when a key is defined for this segment, the encrypted bytes\n                encryptedBytes: null,\n                // The target timestampOffset for this segment when we append it\n                // to the source buffer\n                timestampOffset: null,\n                // The timeline that the segment is in\n                timeline: segment.timeline,\n                // The expected duration of the segment in seconds\n                duration: part && part.duration || segment.duration,\n                // retain the segment in case the playlist updates while doing an async process\n                segment,\n                part,\n                byteLength: 0,\n                transmuxer: this.transmuxer_,\n                // type of getMediaInfoForTime that was used to get this segment\n                getMediaInfoForTime,\n                independent\n            };\n            const overrideCheck = typeof forceTimestampOffset !== 'undefined' ? forceTimestampOffset : this.isPendingTimestampOffset_;\n            segmentInfo.timestampOffset = this.timestampOffsetForSegment_({\n                segmentTimeline: segment.timeline,\n                currentTimeline: this.currentTimeline_,\n                startOfSegment,\n                buffered: this.buffered_(),\n                overrideCheck\n            });\n            const audioBufferedEnd = lastBufferedEnd(this.sourceUpdater_.audioBuffered());\n            if (typeof audioBufferedEnd === 'number') {\n                // since the transmuxer is using the actual timing values, but the buffer is\n                // adjusted by the timestamp offset, we must adjust the value here\n                segmentInfo.audioAppendStart = audioBufferedEnd - this.sourceUpdater_.audioTimestampOffset();\n            }\n            if (this.sourceUpdater_.videoBuffered().length) {\n                segmentInfo.gopsToAlignWith = gopsSafeToAlignWith(this.gopBuffer_,\n                    // since the transmuxer is using the actual timing values, but the time is\n                    // adjusted by the timestmap offset, we must adjust the value here\n                    this.currentTime_() - this.sourceUpdater_.videoTimestampOffset(), this.timeMapping_);\n            }\n            return segmentInfo;\n        } // get the timestampoffset for a segment,\n        // added so that vtt segment loader can override and prevent\n        // adding timestamp offsets.\n\n        timestampOffsetForSegment_(options) {\n            return timestampOffsetForSegment(options);\n        }\n        /**\n         * Determines if the network has enough bandwidth to complete the current segment\n         * request in a timely manner. If not, the request will be aborted early and bandwidth\n         * updated to trigger a playlist switch.\n         *\n         * @param {Object} stats\n         *        Object containing stats about the request timing and size\n         * @private\n         */\n\n        earlyAbortWhenNeeded_(stats) {\n            if (this.vhs_.tech_.paused() ||\n                // Don't abort if the current playlist is on the lowestEnabledRendition\n                // TODO: Replace using timeout with a boolean indicating whether this playlist is\n                //       the lowestEnabledRendition.\n                !this.xhrOptions_.timeout ||\n                // Don't abort if we have no bandwidth information to estimate segment sizes\n                !this.playlist_.attributes.BANDWIDTH) {\n                return;\n            } // Wait at least 1 second since the first byte of data has been received before\n            // using the calculated bandwidth from the progress event to allow the bitrate\n            // to stabilize\n\n            if (Date.now() - (stats.firstBytesReceivedAt || Date.now()) < 1000) {\n                return;\n            }\n            const currentTime = this.currentTime_();\n            const measuredBandwidth = stats.bandwidth;\n            const segmentDuration = this.pendingSegment_.duration;\n            const requestTimeRemaining = Playlist.estimateSegmentRequestTime(segmentDuration, measuredBandwidth, this.playlist_, stats.bytesReceived); // Subtract 1 from the timeUntilRebuffer so we still consider an early abort\n            // if we are only left with less than 1 second when the request completes.\n            // A negative timeUntilRebuffering indicates we are already rebuffering\n\n            const timeUntilRebuffer$1 = timeUntilRebuffer(this.buffered_(), currentTime, this.vhs_.tech_.playbackRate()) - 1; // Only consider aborting early if the estimated time to finish the download\n            // is larger than the estimated time until the player runs out of forward buffer\n\n            if (requestTimeRemaining <= timeUntilRebuffer$1) {\n                return;\n            }\n            const switchCandidate = minRebufferMaxBandwidthSelector({\n                main: this.vhs_.playlists.main,\n                currentTime,\n                bandwidth: measuredBandwidth,\n                duration: this.duration_(),\n                segmentDuration,\n                timeUntilRebuffer: timeUntilRebuffer$1,\n                currentTimeline: this.currentTimeline_,\n                syncController: this.syncController_\n            });\n            if (!switchCandidate) {\n                return;\n            }\n            const rebufferingImpact = requestTimeRemaining - timeUntilRebuffer$1;\n            const timeSavedBySwitching = rebufferingImpact - switchCandidate.rebufferingImpact;\n            let minimumTimeSaving = 0.5; // If we are already rebuffering, increase the amount of variance we add to the\n            // potential round trip time of the new request so that we are not too aggressive\n            // with switching to a playlist that might save us a fraction of a second.\n\n            if (timeUntilRebuffer$1 <= TIME_FUDGE_FACTOR) {\n                minimumTimeSaving = 1;\n            }\n            if (!switchCandidate.playlist || switchCandidate.playlist.uri === this.playlist_.uri || timeSavedBySwitching < minimumTimeSaving) {\n                return;\n            } // set the bandwidth to that of the desired playlist being sure to scale by\n            // BANDWIDTH_VARIANCE and add one so the playlist selector does not exclude it\n            // don't trigger a bandwidthupdate as the bandwidth is artifial\n\n            this.bandwidth = switchCandidate.playlist.attributes.BANDWIDTH * Config.BANDWIDTH_VARIANCE + 1;\n            this.trigger('earlyabort');\n        }\n        handleAbort_(segmentInfo) {\n            this.logger_(`Aborting ${segmentInfoString(segmentInfo)}`);\n            this.mediaRequestsAborted += 1;\n        }\n        /**\n         * XHR `progress` event handler\n         *\n         * @param {Event}\n         *        The XHR `progress` event\n         * @param {Object} simpleSegment\n         *        A simplified segment object copy\n         * @private\n         */\n\n        handleProgress_(event, simpleSegment) {\n            this.earlyAbortWhenNeeded_(simpleSegment.stats);\n            if (this.checkForAbort_(simpleSegment.requestId)) {\n                return;\n            }\n            this.trigger('progress');\n        }\n        handleTrackInfo_(simpleSegment, trackInfo) {\n            this.earlyAbortWhenNeeded_(simpleSegment.stats);\n            if (this.checkForAbort_(simpleSegment.requestId)) {\n                return;\n            }\n            if (this.checkForIllegalMediaSwitch(trackInfo)) {\n                return;\n            }\n            trackInfo = trackInfo || {}; // When we have track info, determine what media types this loader is dealing with.\n            // Guard against cases where we're not getting track info at all until we are\n            // certain that all streams will provide it.\n\n            if (!shallowEqual(this.currentMediaInfo_, trackInfo)) {\n                this.appendInitSegment_ = {\n                    audio: true,\n                    video: true\n                };\n                this.startingMediaInfo_ = trackInfo;\n                this.currentMediaInfo_ = trackInfo;\n                this.logger_('trackinfo update', trackInfo);\n                this.trigger('trackinfo');\n            } // trackinfo may cause an abort if the trackinfo\n            // causes a codec change to an unsupported codec.\n\n            if (this.checkForAbort_(simpleSegment.requestId)) {\n                return;\n            } // set trackinfo on the pending segment so that\n            // it can append.\n\n            this.pendingSegment_.trackInfo = trackInfo; // check if any calls were waiting on the track info\n\n            if (this.hasEnoughInfoToAppend_()) {\n                this.processCallQueue_();\n            }\n        }\n        handleTimingInfo_(simpleSegment, mediaType, timeType, time) {\n            this.earlyAbortWhenNeeded_(simpleSegment.stats);\n            if (this.checkForAbort_(simpleSegment.requestId)) {\n                return;\n            }\n            const segmentInfo = this.pendingSegment_;\n            const timingInfoProperty = timingInfoPropertyForMedia(mediaType);\n            segmentInfo[timingInfoProperty] = segmentInfo[timingInfoProperty] || {};\n            segmentInfo[timingInfoProperty][timeType] = time;\n            this.logger_(`timinginfo: ${mediaType} - ${timeType} - ${time}`); // check if any calls were waiting on the timing info\n\n            if (this.hasEnoughInfoToAppend_()) {\n                this.processCallQueue_();\n            }\n        }\n        handleCaptions_(simpleSegment, captionData) {\n            this.earlyAbortWhenNeeded_(simpleSegment.stats);\n            if (this.checkForAbort_(simpleSegment.requestId)) {\n                return;\n            } // This could only happen with fmp4 segments, but\n            // should still not happen in general\n\n            if (captionData.length === 0) {\n                this.logger_('SegmentLoader received no captions from a caption event');\n                return;\n            }\n            const segmentInfo = this.pendingSegment_; // Wait until we have some video data so that caption timing\n            // can be adjusted by the timestamp offset\n\n            if (!segmentInfo.hasAppendedData_) {\n                this.metadataQueue_.caption.push(this.handleCaptions_.bind(this, simpleSegment, captionData));\n                return;\n            }\n            const timestampOffset = this.sourceUpdater_.videoTimestampOffset() === null ? this.sourceUpdater_.audioTimestampOffset() : this.sourceUpdater_.videoTimestampOffset();\n            const captionTracks = {}; // get total start/end and captions for each track/stream\n\n            captionData.forEach(caption => {\n                // caption.stream is actually a track name...\n                // set to the existing values in tracks or default values\n                captionTracks[caption.stream] = captionTracks[caption.stream] || {\n                    // Infinity, as any other value will be less than this\n                    startTime: Infinity,\n                    captions: [],\n                    // 0 as an other value will be more than this\n                    endTime: 0\n                };\n                const captionTrack = captionTracks[caption.stream];\n                captionTrack.startTime = Math.min(captionTrack.startTime, caption.startTime + timestampOffset);\n                captionTrack.endTime = Math.max(captionTrack.endTime, caption.endTime + timestampOffset);\n                captionTrack.captions.push(caption);\n            });\n            Object.keys(captionTracks).forEach(trackName => {\n                const {\n                    startTime,\n                    endTime,\n                    captions\n                } = captionTracks[trackName];\n                const inbandTextTracks = this.inbandTextTracks_;\n                this.logger_(`adding cues from ${startTime} -> ${endTime} for ${trackName}`);\n                createCaptionsTrackIfNotExists(inbandTextTracks, this.vhs_.tech_, trackName); // clear out any cues that start and end at the same time period for the same track.\n                // We do this because a rendition change that also changes the timescale for captions\n                // will result in captions being re-parsed for certain segments. If we add them again\n                // without clearing we will have two of the same captions visible.\n\n                removeCuesFromTrack(startTime, endTime, inbandTextTracks[trackName]);\n                addCaptionData({\n                    captionArray: captions,\n                    inbandTextTracks,\n                    timestampOffset\n                });\n            }); // Reset stored captions since we added parsed\n            // captions to a text track at this point\n\n            if (this.transmuxer_) {\n                this.transmuxer_.postMessage({\n                    action: 'clearParsedMp4Captions'\n                });\n            }\n        }\n        handleId3_(simpleSegment, id3Frames, dispatchType) {\n            this.earlyAbortWhenNeeded_(simpleSegment.stats);\n            if (this.checkForAbort_(simpleSegment.requestId)) {\n                return;\n            }\n            const segmentInfo = this.pendingSegment_; // we need to have appended data in order for the timestamp offset to be set\n\n            if (!segmentInfo.hasAppendedData_) {\n                this.metadataQueue_.id3.push(this.handleId3_.bind(this, simpleSegment, id3Frames, dispatchType));\n                return;\n            }\n            const timestampOffset = this.sourceUpdater_.videoTimestampOffset() === null ? this.sourceUpdater_.audioTimestampOffset() : this.sourceUpdater_.videoTimestampOffset(); // There's potentially an issue where we could double add metadata if there's a muxed\n            // audio/video source with a metadata track, and an alt audio with a metadata track.\n            // However, this probably won't happen, and if it does it can be handled then.\n\n            createMetadataTrackIfNotExists(this.inbandTextTracks_, dispatchType, this.vhs_.tech_);\n            addMetadata({\n                inbandTextTracks: this.inbandTextTracks_,\n                metadataArray: id3Frames,\n                timestampOffset,\n                videoDuration: this.duration_()\n            });\n        }\n        processMetadataQueue_() {\n            this.metadataQueue_.id3.forEach(fn => fn());\n            this.metadataQueue_.caption.forEach(fn => fn());\n            this.metadataQueue_.id3 = [];\n            this.metadataQueue_.caption = [];\n        }\n        processCallQueue_() {\n            const callQueue = this.callQueue_; // Clear out the queue before the queued functions are run, since some of the\n            // functions may check the length of the load queue and default to pushing themselves\n            // back onto the queue.\n\n            this.callQueue_ = [];\n            callQueue.forEach(fun => fun());\n        }\n        processLoadQueue_() {\n            const loadQueue = this.loadQueue_; // Clear out the queue before the queued functions are run, since some of the\n            // functions may check the length of the load queue and default to pushing themselves\n            // back onto the queue.\n\n            this.loadQueue_ = [];\n            loadQueue.forEach(fun => fun());\n        }\n        /**\n         * Determines whether the loader has enough info to load the next segment.\n         *\n         * @return {boolean}\n         *         Whether or not the loader has enough info to load the next segment\n         */\n\n        hasEnoughInfoToLoad_() {\n            // Since primary timing goes by video, only the audio loader potentially needs to wait\n            // to load.\n            if (this.loaderType_ !== 'audio') {\n                return true;\n            }\n            const segmentInfo = this.pendingSegment_; // A fill buffer must have already run to establish a pending segment before there's\n            // enough info to load.\n\n            if (!segmentInfo) {\n                return false;\n            } // The first segment can and should be loaded immediately so that source buffers are\n            // created together (before appending). Source buffer creation uses the presence of\n            // audio and video data to determine whether to create audio/video source buffers, and\n            // uses processed (transmuxed or parsed) media to determine the types required.\n\n            if (!this.getCurrentMediaInfo_()) {\n                return true;\n            }\n            if (\n                // Technically, instead of waiting to load a segment on timeline changes, a segment\n                // can be requested and downloaded and only wait before it is transmuxed or parsed.\n                // But in practice, there are a few reasons why it is better to wait until a loader\n                // is ready to append that segment before requesting and downloading:\n                //\n                // 1. Because audio and main loaders cross discontinuities together, if this loader\n                //    is waiting for the other to catch up, then instead of requesting another\n                //    segment and using up more bandwidth, by not yet loading, more bandwidth is\n                //    allotted to the loader currently behind.\n                // 2. media-segment-request doesn't have to have logic to consider whether a segment\n                // is ready to be processed or not, isolating the queueing behavior to the loader.\n                // 3. The audio loader bases some of its segment properties on timing information\n                //    provided by the main loader, meaning that, if the logic for waiting on\n                //    processing was in media-segment-request, then it would also need to know how\n                //    to re-generate the segment information after the main loader caught up.\n                shouldWaitForTimelineChange({\n                    timelineChangeController: this.timelineChangeController_,\n                    currentTimeline: this.currentTimeline_,\n                    segmentTimeline: segmentInfo.timeline,\n                    loaderType: this.loaderType_,\n                    audioDisabled: this.audioDisabled_\n                })) {\n                return false;\n            }\n            return true;\n        }\n        getCurrentMediaInfo_(segmentInfo = this.pendingSegment_) {\n            return segmentInfo && segmentInfo.trackInfo || this.currentMediaInfo_;\n        }\n        getMediaInfo_(segmentInfo = this.pendingSegment_) {\n            return this.getCurrentMediaInfo_(segmentInfo) || this.startingMediaInfo_;\n        }\n        getPendingSegmentPlaylist() {\n            return this.pendingSegment_ ? this.pendingSegment_.playlist : null;\n        }\n        hasEnoughInfoToAppend_() {\n            if (!this.sourceUpdater_.ready()) {\n                return false;\n            } // If content needs to be removed or the loader is waiting on an append reattempt,\n            // then no additional content should be appended until the prior append is resolved.\n\n            if (this.waitingOnRemove_ || this.quotaExceededErrorRetryTimeout_) {\n                return false;\n            }\n            const segmentInfo = this.pendingSegment_;\n            const trackInfo = this.getCurrentMediaInfo_(); // no segment to append any data for or\n            // we do not have information on this specific\n            // segment yet\n\n            if (!segmentInfo || !trackInfo) {\n                return false;\n            }\n            const {\n                hasAudio,\n                hasVideo,\n                isMuxed\n            } = trackInfo;\n            if (hasVideo && !segmentInfo.videoTimingInfo) {\n                return false;\n            } // muxed content only relies on video timing information for now.\n\n            if (hasAudio && !this.audioDisabled_ && !isMuxed && !segmentInfo.audioTimingInfo) {\n                return false;\n            }\n            if (shouldWaitForTimelineChange({\n                timelineChangeController: this.timelineChangeController_,\n                currentTimeline: this.currentTimeline_,\n                segmentTimeline: segmentInfo.timeline,\n                loaderType: this.loaderType_,\n                audioDisabled: this.audioDisabled_\n            })) {\n                return false;\n            }\n            return true;\n        }\n        handleData_(simpleSegment, result) {\n            this.earlyAbortWhenNeeded_(simpleSegment.stats);\n            if (this.checkForAbort_(simpleSegment.requestId)) {\n                return;\n            } // If there's anything in the call queue, then this data came later and should be\n            // executed after the calls currently queued.\n\n            if (this.callQueue_.length || !this.hasEnoughInfoToAppend_()) {\n                this.callQueue_.push(this.handleData_.bind(this, simpleSegment, result));\n                return;\n            }\n            const segmentInfo = this.pendingSegment_; // update the time mapping so we can translate from display time to media time\n\n            this.setTimeMapping_(segmentInfo.timeline); // for tracking overall stats\n\n            this.updateMediaSecondsLoaded_(segmentInfo.part || segmentInfo.segment); // Note that the state isn't changed from loading to appending. This is because abort\n            // logic may change behavior depending on the state, and changing state too early may\n            // inflate our estimates of bandwidth. In the future this should be re-examined to\n            // note more granular states.\n            // don't process and append data if the mediaSource is closed\n\n            if (this.mediaSource_.readyState === 'closed') {\n                return;\n            } // if this request included an initialization segment, save that data\n            // to the initSegment cache\n\n            if (simpleSegment.map) {\n                simpleSegment.map = this.initSegmentForMap(simpleSegment.map, true); // move over init segment properties to media request\n\n                segmentInfo.segment.map = simpleSegment.map;\n            } // if this request included a segment key, save that data in the cache\n\n            if (simpleSegment.key) {\n                this.segmentKey(simpleSegment.key, true);\n            }\n            segmentInfo.isFmp4 = simpleSegment.isFmp4;\n            segmentInfo.timingInfo = segmentInfo.timingInfo || {};\n            if (segmentInfo.isFmp4) {\n                this.trigger('fmp4');\n                segmentInfo.timingInfo.start = segmentInfo[timingInfoPropertyForMedia(result.type)].start;\n            } else {\n                const trackInfo = this.getCurrentMediaInfo_();\n                const useVideoTimingInfo = this.loaderType_ === 'main' && trackInfo && trackInfo.hasVideo;\n                let firstVideoFrameTimeForData;\n                if (useVideoTimingInfo) {\n                    firstVideoFrameTimeForData = segmentInfo.videoTimingInfo.start;\n                } // Segment loader knows more about segment timing than the transmuxer (in certain\n                // aspects), so make any changes required for a more accurate start time.\n                // Don't set the end time yet, as the segment may not be finished processing.\n\n                segmentInfo.timingInfo.start = this.trueSegmentStart_({\n                    currentStart: segmentInfo.timingInfo.start,\n                    playlist: segmentInfo.playlist,\n                    mediaIndex: segmentInfo.mediaIndex,\n                    currentVideoTimestampOffset: this.sourceUpdater_.videoTimestampOffset(),\n                    useVideoTimingInfo,\n                    firstVideoFrameTimeForData,\n                    videoTimingInfo: segmentInfo.videoTimingInfo,\n                    audioTimingInfo: segmentInfo.audioTimingInfo\n                });\n            } // Init segments for audio and video only need to be appended in certain cases. Now\n            // that data is about to be appended, we can check the final cases to determine\n            // whether we should append an init segment.\n\n            this.updateAppendInitSegmentStatus(segmentInfo, result.type); // Timestamp offset should be updated once we get new data and have its timing info,\n            // as we use the start of the segment to offset the best guess (playlist provided)\n            // timestamp offset.\n\n            this.updateSourceBufferTimestampOffset_(segmentInfo); // if this is a sync request we need to determine whether it should\n            // be appended or not.\n\n            if (segmentInfo.isSyncRequest) {\n                // first save/update our timing info for this segment.\n                // this is what allows us to choose an accurate segment\n                // and the main reason we make a sync request.\n                this.updateTimingInfoEnd_(segmentInfo);\n                this.syncController_.saveSegmentTimingInfo({\n                    segmentInfo,\n                    shouldSaveTimelineMapping: this.loaderType_ === 'main'\n                });\n                const next = this.chooseNextRequest_(); // If the sync request isn't the segment that would be requested next\n                // after taking into account its timing info, do not append it.\n\n                if (next.mediaIndex !== segmentInfo.mediaIndex || next.partIndex !== segmentInfo.partIndex) {\n                    this.logger_('sync segment was incorrect, not appending');\n                    return;\n                } // otherwise append it like any other segment as our guess was correct.\n\n                this.logger_('sync segment was correct, appending');\n            } // Save some state so that in the future anything waiting on first append (and/or\n            // timestamp offset(s)) can process immediately. While the extra state isn't optimal,\n            // we need some notion of whether the timestamp offset or other relevant information\n            // has had a chance to be set.\n\n            segmentInfo.hasAppendedData_ = true; // Now that the timestamp offset should be set, we can append any waiting ID3 tags.\n\n            this.processMetadataQueue_();\n            this.appendData_(segmentInfo, result);\n        }\n        updateAppendInitSegmentStatus(segmentInfo, type) {\n            // alt audio doesn't manage timestamp offset\n            if (this.loaderType_ === 'main' && typeof segmentInfo.timestampOffset === 'number' &&\n                // in the case that we're handling partial data, we don't want to append an init\n                // segment for each chunk\n                !segmentInfo.changedTimestampOffset) {\n                // if the timestamp offset changed, the timeline may have changed, so we have to re-\n                // append init segments\n                this.appendInitSegment_ = {\n                    audio: true,\n                    video: true\n                };\n            }\n            if (this.playlistOfLastInitSegment_[type] !== segmentInfo.playlist) {\n                // make sure we append init segment on playlist changes, in case the media config\n                // changed\n                this.appendInitSegment_[type] = true;\n            }\n        }\n        getInitSegmentAndUpdateState_({\n                                          type,\n                                          initSegment,\n                                          map,\n                                          playlist\n                                      }) {\n            // \"The EXT-X-MAP tag specifies how to obtain the Media Initialization Section\n            // (Section 3) required to parse the applicable Media Segments.  It applies to every\n            // Media Segment that appears after it in the Playlist until the next EXT-X-MAP tag\n            // or until the end of the playlist.\"\n            // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.2.5\n            if (map) {\n                const id = initSegmentId(map);\n                if (this.activeInitSegmentId_ === id) {\n                    // don't need to re-append the init segment if the ID matches\n                    return null;\n                } // a map-specified init segment takes priority over any transmuxed (or otherwise\n                // obtained) init segment\n                //\n                // this also caches the init segment for later use\n\n                initSegment = this.initSegmentForMap(map, true).bytes;\n                this.activeInitSegmentId_ = id;\n            } // We used to always prepend init segments for video, however, that shouldn't be\n            // necessary. Instead, we should only append on changes, similar to what we've always\n            // done for audio. This is more important (though may not be that important) for\n            // frame-by-frame appending for LHLS, simply because of the increased quantity of\n            // appends.\n\n            if (initSegment && this.appendInitSegment_[type]) {\n                // Make sure we track the playlist that we last used for the init segment, so that\n                // we can re-append the init segment in the event that we get data from a new\n                // playlist. Discontinuities and track changes are handled in other sections.\n                this.playlistOfLastInitSegment_[type] = playlist; // Disable future init segment appends for this type. Until a change is necessary.\n\n                this.appendInitSegment_[type] = false; // we need to clear out the fmp4 active init segment id, since\n                // we are appending the muxer init segment\n\n                this.activeInitSegmentId_ = null;\n                return initSegment;\n            }\n            return null;\n        }\n        handleQuotaExceededError_({\n                                      segmentInfo,\n                                      type,\n                                      bytes\n                                  }, error) {\n            const audioBuffered = this.sourceUpdater_.audioBuffered();\n            const videoBuffered = this.sourceUpdater_.videoBuffered(); // For now we're ignoring any notion of gaps in the buffer, but they, in theory,\n            // should be cleared out during the buffer removals. However, log in case it helps\n            // debug.\n\n            if (audioBuffered.length > 1) {\n                this.logger_('On QUOTA_EXCEEDED_ERR, found gaps in the audio buffer: ' + timeRangesToArray(audioBuffered).join(', '));\n            }\n            if (videoBuffered.length > 1) {\n                this.logger_('On QUOTA_EXCEEDED_ERR, found gaps in the video buffer: ' + timeRangesToArray(videoBuffered).join(', '));\n            }\n            const audioBufferStart = audioBuffered.length ? audioBuffered.start(0) : 0;\n            const audioBufferEnd = audioBuffered.length ? audioBuffered.end(audioBuffered.length - 1) : 0;\n            const videoBufferStart = videoBuffered.length ? videoBuffered.start(0) : 0;\n            const videoBufferEnd = videoBuffered.length ? videoBuffered.end(videoBuffered.length - 1) : 0;\n            if (audioBufferEnd - audioBufferStart <= MIN_BACK_BUFFER && videoBufferEnd - videoBufferStart <= MIN_BACK_BUFFER) {\n                // Can't remove enough buffer to make room for new segment (or the browser doesn't\n                // allow for appends of segments this size). In the future, it may be possible to\n                // split up the segment and append in pieces, but for now, error out this playlist\n                // in an attempt to switch to a more manageable rendition.\n                this.logger_('On QUOTA_EXCEEDED_ERR, single segment too large to append to ' + 'buffer, triggering an error. ' + `Appended byte length: ${bytes.byteLength}, ` + `audio buffer: ${timeRangesToArray(audioBuffered).join(', ')}, ` + `video buffer: ${timeRangesToArray(videoBuffered).join(', ')}, `);\n                this.error({\n                    message: 'Quota exceeded error with append of a single segment of content',\n                    excludeUntil: Infinity\n                });\n                this.trigger('error');\n                return;\n            } // To try to resolve the quota exceeded error, clear back buffer and retry. This means\n            // that the segment-loader should block on future events until this one is handled, so\n            // that it doesn't keep moving onto further segments. Adding the call to the call\n            // queue will prevent further appends until waitingOnRemove_ and\n            // quotaExceededErrorRetryTimeout_ are cleared.\n            //\n            // Note that this will only block the current loader. In the case of demuxed content,\n            // the other load may keep filling as fast as possible. In practice, this should be\n            // OK, as it is a rare case when either audio has a high enough bitrate to fill up a\n            // source buffer, or video fills without enough room for audio to append (and without\n            // the availability of clearing out seconds of back buffer to make room for audio).\n            // But it might still be good to handle this case in the future as a TODO.\n\n            this.waitingOnRemove_ = true;\n            this.callQueue_.push(this.appendToSourceBuffer_.bind(this, {\n                segmentInfo,\n                type,\n                bytes\n            }));\n            const currentTime = this.currentTime_(); // Try to remove as much audio and video as possible to make room for new content\n            // before retrying.\n\n            const timeToRemoveUntil = currentTime - MIN_BACK_BUFFER;\n            this.logger_(`On QUOTA_EXCEEDED_ERR, removing audio/video from 0 to ${timeToRemoveUntil}`);\n            this.remove(0, timeToRemoveUntil, () => {\n                this.logger_(`On QUOTA_EXCEEDED_ERR, retrying append in ${MIN_BACK_BUFFER}s`);\n                this.waitingOnRemove_ = false; // wait the length of time alotted in the back buffer to prevent wasted\n                // attempts (since we can't clear less than the minimum)\n\n                this.quotaExceededErrorRetryTimeout_ = window.setTimeout(() => {\n                    this.logger_('On QUOTA_EXCEEDED_ERR, re-processing call queue');\n                    this.quotaExceededErrorRetryTimeout_ = null;\n                    this.processCallQueue_();\n                }, MIN_BACK_BUFFER * 1000);\n            }, true);\n        }\n        handleAppendError_({\n                               segmentInfo,\n                               type,\n                               bytes\n                           }, error) {\n            // if there's no error, nothing to do\n            if (!error) {\n                return;\n            }\n            if (error.code === QUOTA_EXCEEDED_ERR) {\n                this.handleQuotaExceededError_({\n                    segmentInfo,\n                    type,\n                    bytes\n                }); // A quota exceeded error should be recoverable with a future re-append, so no need\n                // to trigger an append error.\n\n                return;\n            }\n            this.logger_('Received non QUOTA_EXCEEDED_ERR on append', error);\n            this.error(`${type} append of ${bytes.length}b failed for segment ` + `#${segmentInfo.mediaIndex} in playlist ${segmentInfo.playlist.id}`); // If an append errors, we often can't recover.\n            // (see https://w3c.github.io/media-source/#sourcebuffer-append-error).\n            //\n            // Trigger a special error so that it can be handled separately from normal,\n            // recoverable errors.\n\n            this.trigger('appenderror');\n        }\n        appendToSourceBuffer_({\n                                  segmentInfo,\n                                  type,\n                                  initSegment,\n                                  data,\n                                  bytes\n                              }) {\n            // If this is a re-append, bytes were already created and don't need to be recreated\n            if (!bytes) {\n                const segments = [data];\n                let byteLength = data.byteLength;\n                if (initSegment) {\n                    // if the media initialization segment is changing, append it before the content\n                    // segment\n                    segments.unshift(initSegment);\n                    byteLength += initSegment.byteLength;\n                } // Technically we should be OK appending the init segment separately, however, we\n                // haven't yet tested that, and prepending is how we have always done things.\n\n                bytes = concatSegments({\n                    bytes: byteLength,\n                    segments\n                });\n            }\n            this.sourceUpdater_.appendBuffer({\n                segmentInfo,\n                type,\n                bytes\n            }, this.handleAppendError_.bind(this, {\n                segmentInfo,\n                type,\n                bytes\n            }));\n        }\n        handleSegmentTimingInfo_(type, requestId, segmentTimingInfo) {\n            if (!this.pendingSegment_ || requestId !== this.pendingSegment_.requestId) {\n                return;\n            }\n            const segment = this.pendingSegment_.segment;\n            const timingInfoProperty = `${type}TimingInfo`;\n            if (!segment[timingInfoProperty]) {\n                segment[timingInfoProperty] = {};\n            }\n            segment[timingInfoProperty].transmuxerPrependedSeconds = segmentTimingInfo.prependedContentDuration || 0;\n            segment[timingInfoProperty].transmuxedPresentationStart = segmentTimingInfo.start.presentation;\n            segment[timingInfoProperty].transmuxedDecodeStart = segmentTimingInfo.start.decode;\n            segment[timingInfoProperty].transmuxedPresentationEnd = segmentTimingInfo.end.presentation;\n            segment[timingInfoProperty].transmuxedDecodeEnd = segmentTimingInfo.end.decode; // mainly used as a reference for debugging\n\n            segment[timingInfoProperty].baseMediaDecodeTime = segmentTimingInfo.baseMediaDecodeTime;\n        }\n        appendData_(segmentInfo, result) {\n            const {\n                type,\n                data\n            } = result;\n            if (!data || !data.byteLength) {\n                return;\n            }\n            if (type === 'audio' && this.audioDisabled_) {\n                return;\n            }\n            const initSegment = this.getInitSegmentAndUpdateState_({\n                type,\n                initSegment: result.initSegment,\n                playlist: segmentInfo.playlist,\n                map: segmentInfo.isFmp4 ? segmentInfo.segment.map : null\n            });\n            this.appendToSourceBuffer_({\n                segmentInfo,\n                type,\n                initSegment,\n                data\n            });\n        }\n        /**\n         * load a specific segment from a request into the buffer\n         *\n         * @private\n         */\n\n        loadSegment_(segmentInfo) {\n            this.state = 'WAITING';\n            this.pendingSegment_ = segmentInfo;\n            this.trimBackBuffer_(segmentInfo);\n            if (typeof segmentInfo.timestampOffset === 'number') {\n                if (this.transmuxer_) {\n                    this.transmuxer_.postMessage({\n                        action: 'clearAllMp4Captions'\n                    });\n                }\n            }\n            if (!this.hasEnoughInfoToLoad_()) {\n                this.loadQueue_.push(() => {\n                    // regenerate the audioAppendStart, timestampOffset, etc as they\n                    // may have changed since this function was added to the queue.\n                    const options = _extends$1({}, segmentInfo, {\n                        forceTimestampOffset: true\n                    });\n                    _extends$1(segmentInfo, this.generateSegmentInfo_(options));\n                    this.isPendingTimestampOffset_ = false;\n                    this.updateTransmuxerAndRequestSegment_(segmentInfo);\n                });\n                return;\n            }\n            this.updateTransmuxerAndRequestSegment_(segmentInfo);\n        }\n        updateTransmuxerAndRequestSegment_(segmentInfo) {\n            // We'll update the source buffer's timestamp offset once we have transmuxed data, but\n            // the transmuxer still needs to be updated before then.\n            //\n            // Even though keepOriginalTimestamps is set to true for the transmuxer, timestamp\n            // offset must be passed to the transmuxer for stream correcting adjustments.\n            if (this.shouldUpdateTransmuxerTimestampOffset_(segmentInfo.timestampOffset)) {\n                this.gopBuffer_.length = 0; // gopsToAlignWith was set before the GOP buffer was cleared\n\n                segmentInfo.gopsToAlignWith = [];\n                this.timeMapping_ = 0; // reset values in the transmuxer since a discontinuity should start fresh\n\n                this.transmuxer_.postMessage({\n                    action: 'reset'\n                });\n                this.transmuxer_.postMessage({\n                    action: 'setTimestampOffset',\n                    timestampOffset: segmentInfo.timestampOffset\n                });\n            }\n            const simpleSegment = this.createSimplifiedSegmentObj_(segmentInfo);\n            const isEndOfStream = this.isEndOfStream_(segmentInfo.mediaIndex, segmentInfo.playlist, segmentInfo.partIndex);\n            const isWalkingForward = this.mediaIndex !== null;\n            const isDiscontinuity = segmentInfo.timeline !== this.currentTimeline_ &&\n                // currentTimeline starts at -1, so we shouldn't end the timeline switching to 0,\n                // the first timeline\n                segmentInfo.timeline > 0;\n            const isEndOfTimeline = isEndOfStream || isWalkingForward && isDiscontinuity;\n            this.logger_(`Requesting ${segmentInfoString(segmentInfo)}`); // If there's an init segment associated with this segment, but it is not cached (identified by a lack of bytes),\n            // then this init segment has never been seen before and should be appended.\n            //\n            // At this point the content type (audio/video or both) is not yet known, but it should be safe to set\n            // both to true and leave the decision of whether to append the init segment to append time.\n\n            if (simpleSegment.map && !simpleSegment.map.bytes) {\n                this.logger_('going to request init segment.');\n                this.appendInitSegment_ = {\n                    video: true,\n                    audio: true\n                };\n            }\n            segmentInfo.abortRequests = mediaSegmentRequest({\n                xhr: this.vhs_.xhr,\n                xhrOptions: this.xhrOptions_,\n                decryptionWorker: this.decrypter_,\n                segment: simpleSegment,\n                abortFn: this.handleAbort_.bind(this, segmentInfo),\n                progressFn: this.handleProgress_.bind(this),\n                trackInfoFn: this.handleTrackInfo_.bind(this),\n                timingInfoFn: this.handleTimingInfo_.bind(this),\n                videoSegmentTimingInfoFn: this.handleSegmentTimingInfo_.bind(this, 'video', segmentInfo.requestId),\n                audioSegmentTimingInfoFn: this.handleSegmentTimingInfo_.bind(this, 'audio', segmentInfo.requestId),\n                captionsFn: this.handleCaptions_.bind(this),\n                isEndOfTimeline,\n                endedTimelineFn: () => {\n                    this.logger_('received endedtimeline callback');\n                },\n                id3Fn: this.handleId3_.bind(this),\n                dataFn: this.handleData_.bind(this),\n                doneFn: this.segmentRequestFinished_.bind(this),\n                onTransmuxerLog: ({\n                                      message,\n                                      level,\n                                      stream\n                                  }) => {\n                    this.logger_(`${segmentInfoString(segmentInfo)} logged from transmuxer stream ${stream} as a ${level}: ${message}`);\n                }\n            });\n        }\n        /**\n         * trim the back buffer so that we don't have too much data\n         * in the source buffer\n         *\n         * @private\n         *\n         * @param {Object} segmentInfo - the current segment\n         */\n\n        trimBackBuffer_(segmentInfo) {\n            const removeToTime = safeBackBufferTrimTime(this.seekable_(), this.currentTime_(), this.playlist_.targetDuration || 10); // Chrome has a hard limit of 150MB of\n            // buffer and a very conservative \"garbage collector\"\n            // We manually clear out the old buffer to ensure\n            // we don't trigger the QuotaExceeded error\n            // on the source buffer during subsequent appends\n\n            if (removeToTime > 0) {\n                this.remove(0, removeToTime);\n            }\n        }\n        /**\n         * created a simplified copy of the segment object with just the\n         * information necessary to perform the XHR and decryption\n         *\n         * @private\n         *\n         * @param {Object} segmentInfo - the current segment\n         * @return {Object} a simplified segment object copy\n         */\n\n        createSimplifiedSegmentObj_(segmentInfo) {\n            const segment = segmentInfo.segment;\n            const part = segmentInfo.part;\n            const simpleSegment = {\n                resolvedUri: part ? part.resolvedUri : segment.resolvedUri,\n                byterange: part ? part.byterange : segment.byterange,\n                requestId: segmentInfo.requestId,\n                transmuxer: segmentInfo.transmuxer,\n                audioAppendStart: segmentInfo.audioAppendStart,\n                gopsToAlignWith: segmentInfo.gopsToAlignWith,\n                part: segmentInfo.part\n            };\n            const previousSegment = segmentInfo.playlist.segments[segmentInfo.mediaIndex - 1];\n            if (previousSegment && previousSegment.timeline === segment.timeline) {\n                // The baseStartTime of a segment is used to handle rollover when probing the TS\n                // segment to retrieve timing information. Since the probe only looks at the media's\n                // times (e.g., PTS and DTS values of the segment), and doesn't consider the\n                // player's time (e.g., player.currentTime()), baseStartTime should reflect the\n                // media time as well. transmuxedDecodeEnd represents the end time of a segment, in\n                // seconds of media time, so should be used here. The previous segment is used since\n                // the end of the previous segment should represent the beginning of the current\n                // segment, so long as they are on the same timeline.\n                if (previousSegment.videoTimingInfo) {\n                    simpleSegment.baseStartTime = previousSegment.videoTimingInfo.transmuxedDecodeEnd;\n                } else if (previousSegment.audioTimingInfo) {\n                    simpleSegment.baseStartTime = previousSegment.audioTimingInfo.transmuxedDecodeEnd;\n                }\n            }\n            if (segment.key) {\n                // if the media sequence is greater than 2^32, the IV will be incorrect\n                // assuming 10s segments, that would be about 1300 years\n                const iv = segment.key.iv || new Uint32Array([0, 0, 0, segmentInfo.mediaIndex + segmentInfo.playlist.mediaSequence]);\n                simpleSegment.key = this.segmentKey(segment.key);\n                simpleSegment.key.iv = iv;\n            }\n            if (segment.map) {\n                simpleSegment.map = this.initSegmentForMap(segment.map);\n            }\n            return simpleSegment;\n        }\n        saveTransferStats_(stats) {\n            // every request counts as a media request even if it has been aborted\n            // or canceled due to a timeout\n            this.mediaRequests += 1;\n            if (stats) {\n                this.mediaBytesTransferred += stats.bytesReceived;\n                this.mediaTransferDuration += stats.roundTripTime;\n            }\n        }\n        saveBandwidthRelatedStats_(duration, stats) {\n            // byteLength will be used for throughput, and should be based on bytes receieved,\n            // which we only know at the end of the request and should reflect total bytes\n            // downloaded rather than just bytes processed from components of the segment\n            this.pendingSegment_.byteLength = stats.bytesReceived;\n            if (duration < MIN_SEGMENT_DURATION_TO_SAVE_STATS) {\n                this.logger_(`Ignoring segment's bandwidth because its duration of ${duration}` + ` is less than the min to record ${MIN_SEGMENT_DURATION_TO_SAVE_STATS}`);\n                return;\n            }\n            this.bandwidth = stats.bandwidth;\n            this.roundTrip = stats.roundTripTime;\n        }\n        handleTimeout_() {\n            // although the VTT segment loader bandwidth isn't really used, it's good to\n            // maintain functinality between segment loaders\n            this.mediaRequestsTimedout += 1;\n            this.bandwidth = 1;\n            this.roundTrip = NaN;\n            this.trigger('bandwidthupdate');\n            this.trigger('timeout');\n        }\n        /**\n         * Handle the callback from the segmentRequest function and set the\n         * associated SegmentLoader state and errors if necessary\n         *\n         * @private\n         */\n\n        segmentRequestFinished_(error, simpleSegment, result) {\n            // TODO handle special cases, e.g., muxed audio/video but only audio in the segment\n            // check the call queue directly since this function doesn't need to deal with any\n            // data, and can continue even if the source buffers are not set up and we didn't get\n            // any data from the segment\n            if (this.callQueue_.length) {\n                this.callQueue_.push(this.segmentRequestFinished_.bind(this, error, simpleSegment, result));\n                return;\n            }\n            this.saveTransferStats_(simpleSegment.stats); // The request was aborted and the SegmentLoader has already been reset\n\n            if (!this.pendingSegment_) {\n                return;\n            } // the request was aborted and the SegmentLoader has already started\n            // another request. this can happen when the timeout for an aborted\n            // request triggers due to a limitation in the XHR library\n            // do not count this as any sort of request or we risk double-counting\n\n            if (simpleSegment.requestId !== this.pendingSegment_.requestId) {\n                return;\n            } // an error occurred from the active pendingSegment_ so reset everything\n\n            if (error) {\n                this.pendingSegment_ = null;\n                this.state = 'READY'; // aborts are not a true error condition and nothing corrective needs to be done\n\n                if (error.code === REQUEST_ERRORS.ABORTED) {\n                    return;\n                }\n                this.pause(); // the error is really just that at least one of the requests timed-out\n                // set the bandwidth to a very low value and trigger an ABR switch to\n                // take emergency action\n\n                if (error.code === REQUEST_ERRORS.TIMEOUT) {\n                    this.handleTimeout_();\n                    return;\n                } // if control-flow has arrived here, then the error is real\n                // emit an error event to exclude the current playlist\n\n                this.mediaRequestsErrored += 1;\n                this.error(error);\n                this.trigger('error');\n                return;\n            }\n            const segmentInfo = this.pendingSegment_; // the response was a success so set any bandwidth stats the request\n            // generated for ABR purposes\n\n            this.saveBandwidthRelatedStats_(segmentInfo.duration, simpleSegment.stats);\n            segmentInfo.endOfAllRequests = simpleSegment.endOfAllRequests;\n            if (result.gopInfo) {\n                this.gopBuffer_ = updateGopBuffer(this.gopBuffer_, result.gopInfo, this.safeAppend_);\n            } // Although we may have already started appending on progress, we shouldn't switch the\n            // state away from loading until we are officially done loading the segment data.\n\n            this.state = 'APPENDING'; // used for testing\n\n            this.trigger('appending');\n            this.waitForAppendsToComplete_(segmentInfo);\n        }\n        setTimeMapping_(timeline) {\n            const timelineMapping = this.syncController_.mappingForTimeline(timeline);\n            if (timelineMapping !== null) {\n                this.timeMapping_ = timelineMapping;\n            }\n        }\n        updateMediaSecondsLoaded_(segment) {\n            if (typeof segment.start === 'number' && typeof segment.end === 'number') {\n                this.mediaSecondsLoaded += segment.end - segment.start;\n            } else {\n                this.mediaSecondsLoaded += segment.duration;\n            }\n        }\n        shouldUpdateTransmuxerTimestampOffset_(timestampOffset) {\n            if (timestampOffset === null) {\n                return false;\n            } // note that we're potentially using the same timestamp offset for both video and\n            // audio\n\n            if (this.loaderType_ === 'main' && timestampOffset !== this.sourceUpdater_.videoTimestampOffset()) {\n                return true;\n            }\n            if (!this.audioDisabled_ && timestampOffset !== this.sourceUpdater_.audioTimestampOffset()) {\n                return true;\n            }\n            return false;\n        }\n        trueSegmentStart_({\n                              currentStart,\n                              playlist,\n                              mediaIndex,\n                              firstVideoFrameTimeForData,\n                              currentVideoTimestampOffset,\n                              useVideoTimingInfo,\n                              videoTimingInfo,\n                              audioTimingInfo\n                          }) {\n            if (typeof currentStart !== 'undefined') {\n                // if start was set once, keep using it\n                return currentStart;\n            }\n            if (!useVideoTimingInfo) {\n                return audioTimingInfo.start;\n            }\n            const previousSegment = playlist.segments[mediaIndex - 1]; // The start of a segment should be the start of the first full frame contained\n            // within that segment. Since the transmuxer maintains a cache of incomplete data\n            // from and/or the last frame seen, the start time may reflect a frame that starts\n            // in the previous segment. Check for that case and ensure the start time is\n            // accurate for the segment.\n\n            if (mediaIndex === 0 || !previousSegment || typeof previousSegment.start === 'undefined' || previousSegment.end !== firstVideoFrameTimeForData + currentVideoTimestampOffset) {\n                return firstVideoFrameTimeForData;\n            }\n            return videoTimingInfo.start;\n        }\n        waitForAppendsToComplete_(segmentInfo) {\n            const trackInfo = this.getCurrentMediaInfo_(segmentInfo);\n            if (!trackInfo) {\n                this.error({\n                    message: 'No starting media returned, likely due to an unsupported media format.',\n                    playlistExclusionDuration: Infinity\n                });\n                this.trigger('error');\n                return;\n            } // Although transmuxing is done, appends may not yet be finished. Throw a marker\n            // on each queue this loader is responsible for to ensure that the appends are\n            // complete.\n\n            const {\n                hasAudio,\n                hasVideo,\n                isMuxed\n            } = trackInfo;\n            const waitForVideo = this.loaderType_ === 'main' && hasVideo;\n            const waitForAudio = !this.audioDisabled_ && hasAudio && !isMuxed;\n            segmentInfo.waitingOnAppends = 0; // segments with no data\n\n            if (!segmentInfo.hasAppendedData_) {\n                if (!segmentInfo.timingInfo && typeof segmentInfo.timestampOffset === 'number') {\n                    // When there's no audio or video data in the segment, there's no audio or video\n                    // timing information.\n                    //\n                    // If there's no audio or video timing information, then the timestamp offset\n                    // can't be adjusted to the appropriate value for the transmuxer and source\n                    // buffers.\n                    //\n                    // Therefore, the next segment should be used to set the timestamp offset.\n                    this.isPendingTimestampOffset_ = true;\n                } // override settings for metadata only segments\n\n                segmentInfo.timingInfo = {\n                    start: 0\n                };\n                segmentInfo.waitingOnAppends++;\n                if (!this.isPendingTimestampOffset_) {\n                    // update the timestampoffset\n                    this.updateSourceBufferTimestampOffset_(segmentInfo); // make sure the metadata queue is processed even though we have\n                    // no video/audio data.\n\n                    this.processMetadataQueue_();\n                } // append is \"done\" instantly with no data.\n\n                this.checkAppendsDone_(segmentInfo);\n                return;\n            } // Since source updater could call back synchronously, do the increments first.\n\n            if (waitForVideo) {\n                segmentInfo.waitingOnAppends++;\n            }\n            if (waitForAudio) {\n                segmentInfo.waitingOnAppends++;\n            }\n            if (waitForVideo) {\n                this.sourceUpdater_.videoQueueCallback(this.checkAppendsDone_.bind(this, segmentInfo));\n            }\n            if (waitForAudio) {\n                this.sourceUpdater_.audioQueueCallback(this.checkAppendsDone_.bind(this, segmentInfo));\n            }\n        }\n        checkAppendsDone_(segmentInfo) {\n            if (this.checkForAbort_(segmentInfo.requestId)) {\n                return;\n            }\n            segmentInfo.waitingOnAppends--;\n            if (segmentInfo.waitingOnAppends === 0) {\n                this.handleAppendsDone_();\n            }\n        }\n        checkForIllegalMediaSwitch(trackInfo) {\n            const illegalMediaSwitchError = illegalMediaSwitch(this.loaderType_, this.getCurrentMediaInfo_(), trackInfo);\n            if (illegalMediaSwitchError) {\n                this.error({\n                    message: illegalMediaSwitchError,\n                    playlistExclusionDuration: Infinity\n                });\n                this.trigger('error');\n                return true;\n            }\n            return false;\n        }\n        updateSourceBufferTimestampOffset_(segmentInfo) {\n            if (segmentInfo.timestampOffset === null ||\n                // we don't yet have the start for whatever media type (video or audio) has\n                // priority, timing-wise, so we must wait\n                typeof segmentInfo.timingInfo.start !== 'number' ||\n                // already updated the timestamp offset for this segment\n                segmentInfo.changedTimestampOffset ||\n                // the alt audio loader should not be responsible for setting the timestamp offset\n                this.loaderType_ !== 'main') {\n                return;\n            }\n            let didChange = false; // Primary timing goes by video, and audio is trimmed in the transmuxer, meaning that\n            // the timing info here comes from video. In the event that the audio is longer than\n            // the video, this will trim the start of the audio.\n            // This also trims any offset from 0 at the beginning of the media\n\n            segmentInfo.timestampOffset -= this.getSegmentStartTimeForTimestampOffsetCalculation_({\n                videoTimingInfo: segmentInfo.segment.videoTimingInfo,\n                audioTimingInfo: segmentInfo.segment.audioTimingInfo,\n                timingInfo: segmentInfo.timingInfo\n            }); // In the event that there are part segment downloads, each will try to update the\n            // timestamp offset. Retaining this bit of state prevents us from updating in the\n            // future (within the same segment), however, there may be a better way to handle it.\n\n            segmentInfo.changedTimestampOffset = true;\n            if (segmentInfo.timestampOffset !== this.sourceUpdater_.videoTimestampOffset()) {\n                this.sourceUpdater_.videoTimestampOffset(segmentInfo.timestampOffset);\n                didChange = true;\n            }\n            if (segmentInfo.timestampOffset !== this.sourceUpdater_.audioTimestampOffset()) {\n                this.sourceUpdater_.audioTimestampOffset(segmentInfo.timestampOffset);\n                didChange = true;\n            }\n            if (didChange) {\n                this.trigger('timestampoffset');\n            }\n        }\n        getSegmentStartTimeForTimestampOffsetCalculation_({\n                                                              videoTimingInfo,\n                                                              audioTimingInfo,\n                                                              timingInfo\n                                                          }) {\n            if (!this.useDtsForTimestampOffset_) {\n                return timingInfo.start;\n            }\n            if (videoTimingInfo && typeof videoTimingInfo.transmuxedDecodeStart === 'number') {\n                return videoTimingInfo.transmuxedDecodeStart;\n            } // handle audio only\n\n            if (audioTimingInfo && typeof audioTimingInfo.transmuxedDecodeStart === 'number') {\n                return audioTimingInfo.transmuxedDecodeStart;\n            } // handle content not transmuxed (e.g., MP4)\n\n            return timingInfo.start;\n        }\n        updateTimingInfoEnd_(segmentInfo) {\n            segmentInfo.timingInfo = segmentInfo.timingInfo || {};\n            const trackInfo = this.getMediaInfo_();\n            const useVideoTimingInfo = this.loaderType_ === 'main' && trackInfo && trackInfo.hasVideo;\n            const prioritizedTimingInfo = useVideoTimingInfo && segmentInfo.videoTimingInfo ? segmentInfo.videoTimingInfo : segmentInfo.audioTimingInfo;\n            if (!prioritizedTimingInfo) {\n                return;\n            }\n            segmentInfo.timingInfo.end = typeof prioritizedTimingInfo.end === 'number' ?\n                // End time may not exist in a case where we aren't parsing the full segment (one\n                // current example is the case of fmp4), so use the rough duration to calculate an\n                // end time.\n                prioritizedTimingInfo.end : prioritizedTimingInfo.start + segmentInfo.duration;\n        }\n        /**\n         * callback to run when appendBuffer is finished. detects if we are\n         * in a good state to do things with the data we got, or if we need\n         * to wait for more\n         *\n         * @private\n         */\n\n        handleAppendsDone_() {\n            // appendsdone can cause an abort\n            if (this.pendingSegment_) {\n                this.trigger('appendsdone');\n            }\n            if (!this.pendingSegment_) {\n                this.state = 'READY'; // TODO should this move into this.checkForAbort to speed up requests post abort in\n                // all appending cases?\n\n                if (!this.paused()) {\n                    this.monitorBuffer_();\n                }\n                return;\n            }\n            const segmentInfo = this.pendingSegment_; // Now that the end of the segment has been reached, we can set the end time. It's\n            // best to wait until all appends are done so we're sure that the primary media is\n            // finished (and we have its end time).\n\n            this.updateTimingInfoEnd_(segmentInfo);\n            if (this.shouldSaveSegmentTimingInfo_) {\n                // Timeline mappings should only be saved for the main loader. This is for multiple\n                // reasons:\n                //\n                // 1) Only one mapping is saved per timeline, meaning that if both the audio loader\n                //    and the main loader try to save the timeline mapping, whichever comes later\n                //    will overwrite the first. In theory this is OK, as the mappings should be the\n                //    same, however, it breaks for (2)\n                // 2) In the event of a live stream, the initial live point will make for a somewhat\n                //    arbitrary mapping. If audio and video streams are not perfectly in-sync, then\n                //    the mapping will be off for one of the streams, dependent on which one was\n                //    first saved (see (1)).\n                // 3) Primary timing goes by video in VHS, so the mapping should be video.\n                //\n                // Since the audio loader will wait for the main loader to load the first segment,\n                // the main loader will save the first timeline mapping, and ensure that there won't\n                // be a case where audio loads two segments without saving a mapping (thus leading\n                // to missing segment timing info).\n                this.syncController_.saveSegmentTimingInfo({\n                    segmentInfo,\n                    shouldSaveTimelineMapping: this.loaderType_ === 'main'\n                });\n            }\n            const segmentDurationMessage = getTroublesomeSegmentDurationMessage(segmentInfo, this.sourceType_);\n            if (segmentDurationMessage) {\n                if (segmentDurationMessage.severity === 'warn') {\n                    videojs.log.warn(segmentDurationMessage.message);\n                } else {\n                    this.logger_(segmentDurationMessage.message);\n                }\n            }\n            this.recordThroughput_(segmentInfo);\n            this.pendingSegment_ = null;\n            this.state = 'READY';\n            if (segmentInfo.isSyncRequest) {\n                this.trigger('syncinfoupdate'); // if the sync request was not appended\n                // then it was not the correct segment.\n                // throw it away and use the data it gave us\n                // to get the correct one.\n\n                if (!segmentInfo.hasAppendedData_) {\n                    this.logger_(`Throwing away un-appended sync request ${segmentInfoString(segmentInfo)}`);\n                    return;\n                }\n            }\n            this.logger_(`Appended ${segmentInfoString(segmentInfo)}`);\n            this.addSegmentMetadataCue_(segmentInfo);\n            this.fetchAtBuffer_ = true;\n            if (this.currentTimeline_ !== segmentInfo.timeline) {\n                this.timelineChangeController_.lastTimelineChange({\n                    type: this.loaderType_,\n                    from: this.currentTimeline_,\n                    to: segmentInfo.timeline\n                }); // If audio is not disabled, the main segment loader is responsible for updating\n                // the audio timeline as well. If the content is video only, this won't have any\n                // impact.\n\n                if (this.loaderType_ === 'main' && !this.audioDisabled_) {\n                    this.timelineChangeController_.lastTimelineChange({\n                        type: 'audio',\n                        from: this.currentTimeline_,\n                        to: segmentInfo.timeline\n                    });\n                }\n            }\n            this.currentTimeline_ = segmentInfo.timeline; // We must update the syncinfo to recalculate the seekable range before\n            // the following conditional otherwise it may consider this a bad \"guess\"\n            // and attempt to resync when the post-update seekable window and live\n            // point would mean that this was the perfect segment to fetch\n\n            this.trigger('syncinfoupdate');\n            const segment = segmentInfo.segment;\n            const part = segmentInfo.part;\n            const badSegmentGuess = segment.end && this.currentTime_() - segment.end > segmentInfo.playlist.targetDuration * 3;\n            const badPartGuess = part && part.end && this.currentTime_() - part.end > segmentInfo.playlist.partTargetDuration * 3; // If we previously appended a segment/part that ends more than 3 part/targetDurations before\n            // the currentTime_ that means that our conservative guess was too conservative.\n            // In that case, reset the loader state so that we try to use any information gained\n            // from the previous request to create a new, more accurate, sync-point.\n\n            if (badSegmentGuess || badPartGuess) {\n                this.logger_(`bad ${badSegmentGuess ? 'segment' : 'part'} ${segmentInfoString(segmentInfo)}`);\n                this.resetEverything();\n                return;\n            }\n            const isWalkingForward = this.mediaIndex !== null; // Don't do a rendition switch unless we have enough time to get a sync segment\n            // and conservatively guess\n\n            if (isWalkingForward) {\n                this.trigger('bandwidthupdate');\n            }\n            this.trigger('progress');\n            this.mediaIndex = segmentInfo.mediaIndex;\n            this.partIndex = segmentInfo.partIndex; // any time an update finishes and the last segment is in the\n            // buffer, end the stream. this ensures the \"ended\" event will\n            // fire if playback reaches that point.\n\n            if (this.isEndOfStream_(segmentInfo.mediaIndex, segmentInfo.playlist, segmentInfo.partIndex)) {\n                this.endOfStream();\n            } // used for testing\n\n            this.trigger('appended');\n            if (segmentInfo.hasAppendedData_) {\n                this.mediaAppends++;\n            }\n            if (!this.paused()) {\n                this.monitorBuffer_();\n            }\n        }\n        /**\n         * Records the current throughput of the decrypt, transmux, and append\n         * portion of the semgment pipeline. `throughput.rate` is a the cumulative\n         * moving average of the throughput. `throughput.count` is the number of\n         * data points in the average.\n         *\n         * @private\n         * @param {Object} segmentInfo the object returned by loadSegment\n         */\n\n        recordThroughput_(segmentInfo) {\n            if (segmentInfo.duration < MIN_SEGMENT_DURATION_TO_SAVE_STATS) {\n                this.logger_(`Ignoring segment's throughput because its duration of ${segmentInfo.duration}` + ` is less than the min to record ${MIN_SEGMENT_DURATION_TO_SAVE_STATS}`);\n                return;\n            }\n            const rate = this.throughput.rate; // Add one to the time to ensure that we don't accidentally attempt to divide\n            // by zero in the case where the throughput is ridiculously high\n\n            const segmentProcessingTime = Date.now() - segmentInfo.endOfAllRequests + 1; // Multiply by 8000 to convert from bytes/millisecond to bits/second\n\n            const segmentProcessingThroughput = Math.floor(segmentInfo.byteLength / segmentProcessingTime * 8 * 1000); // This is just a cumulative moving average calculation:\n            //   newAvg = oldAvg + (sample - oldAvg) / (sampleCount + 1)\n\n            this.throughput.rate += (segmentProcessingThroughput - rate) / ++this.throughput.count;\n        }\n        /**\n         * Adds a cue to the segment-metadata track with some metadata information about the\n         * segment\n         *\n         * @private\n         * @param {Object} segmentInfo\n         *        the object returned by loadSegment\n         * @method addSegmentMetadataCue_\n         */\n\n        addSegmentMetadataCue_(segmentInfo) {\n            if (!this.segmentMetadataTrack_) {\n                return;\n            }\n            const segment = segmentInfo.segment;\n            const start = segment.start;\n            const end = segment.end; // Do not try adding the cue if the start and end times are invalid.\n\n            if (!finite(start) || !finite(end)) {\n                return;\n            }\n            removeCuesFromTrack(start, end, this.segmentMetadataTrack_);\n            const Cue = window.WebKitDataCue || window.VTTCue;\n            const value = {\n                custom: segment.custom,\n                dateTimeObject: segment.dateTimeObject,\n                dateTimeString: segment.dateTimeString,\n                bandwidth: segmentInfo.playlist.attributes.BANDWIDTH,\n                resolution: segmentInfo.playlist.attributes.RESOLUTION,\n                codecs: segmentInfo.playlist.attributes.CODECS,\n                byteLength: segmentInfo.byteLength,\n                uri: segmentInfo.uri,\n                timeline: segmentInfo.timeline,\n                playlist: segmentInfo.playlist.id,\n                start,\n                end\n            };\n            const data = JSON.stringify(value);\n            const cue = new Cue(start, end, data); // Attach the metadata to the value property of the cue to keep consistency between\n            // the differences of WebKitDataCue in safari and VTTCue in other browsers\n\n            cue.value = value;\n            this.segmentMetadataTrack_.addCue(cue);\n        }\n    }\n    function noop() {}\n    const toTitleCase = function (string) {\n        if (typeof string !== 'string') {\n            return string;\n        }\n        return string.replace(/./, w => w.toUpperCase());\n    };\n\n    /**\n     * @file source-updater.js\n     */\n    const bufferTypes = ['video', 'audio'];\n    const updating = (type, sourceUpdater) => {\n        const sourceBuffer = sourceUpdater[`${type}Buffer`];\n        return sourceBuffer && sourceBuffer.updating || sourceUpdater.queuePending[type];\n    };\n    const nextQueueIndexOfType = (type, queue) => {\n        for (let i = 0; i < queue.length; i++) {\n            const queueEntry = queue[i];\n            if (queueEntry.type === 'mediaSource') {\n                // If the next entry is a media source entry (uses multiple source buffers), block\n                // processing to allow it to go through first.\n                return null;\n            }\n            if (queueEntry.type === type) {\n                return i;\n            }\n        }\n        return null;\n    };\n    const shiftQueue = (type, sourceUpdater) => {\n        if (sourceUpdater.queue.length === 0) {\n            return;\n        }\n        let queueIndex = 0;\n        let queueEntry = sourceUpdater.queue[queueIndex];\n        if (queueEntry.type === 'mediaSource') {\n            if (!sourceUpdater.updating() && sourceUpdater.mediaSource.readyState !== 'closed') {\n                sourceUpdater.queue.shift();\n                queueEntry.action(sourceUpdater);\n                if (queueEntry.doneFn) {\n                    queueEntry.doneFn();\n                } // Only specific source buffer actions must wait for async updateend events. Media\n                // Source actions process synchronously. Therefore, both audio and video source\n                // buffers are now clear to process the next queue entries.\n\n                shiftQueue('audio', sourceUpdater);\n                shiftQueue('video', sourceUpdater);\n            } // Media Source actions require both source buffers, so if the media source action\n            // couldn't process yet (because one or both source buffers are busy), block other\n            // queue actions until both are available and the media source action can process.\n\n            return;\n        }\n        if (type === 'mediaSource') {\n            // If the queue was shifted by a media source action (this happens when pushing a\n            // media source action onto the queue), then it wasn't from an updateend event from an\n            // audio or video source buffer, so there's no change from previous state, and no\n            // processing should be done.\n            return;\n        } // Media source queue entries don't need to consider whether the source updater is\n        // started (i.e., source buffers are created) as they don't need the source buffers, but\n        // source buffer queue entries do.\n\n        if (!sourceUpdater.ready() || sourceUpdater.mediaSource.readyState === 'closed' || updating(type, sourceUpdater)) {\n            return;\n        }\n        if (queueEntry.type !== type) {\n            queueIndex = nextQueueIndexOfType(type, sourceUpdater.queue);\n            if (queueIndex === null) {\n                // Either there's no queue entry that uses this source buffer type in the queue, or\n                // there's a media source queue entry before the next entry of this type, in which\n                // case wait for that action to process first.\n                return;\n            }\n            queueEntry = sourceUpdater.queue[queueIndex];\n        }\n        sourceUpdater.queue.splice(queueIndex, 1); // Keep a record that this source buffer type is in use.\n        //\n        // The queue pending operation must be set before the action is performed in the event\n        // that the action results in a synchronous event that is acted upon. For instance, if\n        // an exception is thrown that can be handled, it's possible that new actions will be\n        // appended to an empty queue and immediately executed, but would not have the correct\n        // pending information if this property was set after the action was performed.\n\n        sourceUpdater.queuePending[type] = queueEntry;\n        queueEntry.action(type, sourceUpdater);\n        if (!queueEntry.doneFn) {\n            // synchronous operation, process next entry\n            sourceUpdater.queuePending[type] = null;\n            shiftQueue(type, sourceUpdater);\n            return;\n        }\n    };\n    const cleanupBuffer = (type, sourceUpdater) => {\n        const buffer = sourceUpdater[`${type}Buffer`];\n        const titleType = toTitleCase(type);\n        if (!buffer) {\n            return;\n        }\n        buffer.removeEventListener('updateend', sourceUpdater[`on${titleType}UpdateEnd_`]);\n        buffer.removeEventListener('error', sourceUpdater[`on${titleType}Error_`]);\n        sourceUpdater.codecs[type] = null;\n        sourceUpdater[`${type}Buffer`] = null;\n    };\n    const inSourceBuffers = (mediaSource, sourceBuffer) => mediaSource && sourceBuffer && Array.prototype.indexOf.call(mediaSource.sourceBuffers, sourceBuffer) !== -1;\n    const actions = {\n        appendBuffer: (bytes, segmentInfo, onError) => (type, sourceUpdater) => {\n            const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null\n            // or the media source does not contain this source buffer.\n\n            if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n                return;\n            }\n            sourceUpdater.logger_(`Appending segment ${segmentInfo.mediaIndex}'s ${bytes.length} bytes to ${type}Buffer`);\n            try {\n                sourceBuffer.appendBuffer(bytes);\n            } catch (e) {\n                sourceUpdater.logger_(`Error with code ${e.code} ` + (e.code === QUOTA_EXCEEDED_ERR ? '(QUOTA_EXCEEDED_ERR) ' : '') + `when appending segment ${segmentInfo.mediaIndex} to ${type}Buffer`);\n                sourceUpdater.queuePending[type] = null;\n                onError(e);\n            }\n        },\n        remove: (start, end) => (type, sourceUpdater) => {\n            const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null\n            // or the media source does not contain this source buffer.\n\n            if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n                return;\n            }\n            sourceUpdater.logger_(`Removing ${start} to ${end} from ${type}Buffer`);\n            try {\n                sourceBuffer.remove(start, end);\n            } catch (e) {\n                sourceUpdater.logger_(`Remove ${start} to ${end} from ${type}Buffer failed`);\n            }\n        },\n        timestampOffset: offset => (type, sourceUpdater) => {\n            const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null\n            // or the media source does not contain this source buffer.\n\n            if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n                return;\n            }\n            sourceUpdater.logger_(`Setting ${type}timestampOffset to ${offset}`);\n            sourceBuffer.timestampOffset = offset;\n        },\n        callback: callback => (type, sourceUpdater) => {\n            callback();\n        },\n        endOfStream: error => sourceUpdater => {\n            if (sourceUpdater.mediaSource.readyState !== 'open') {\n                return;\n            }\n            sourceUpdater.logger_(`Calling mediaSource endOfStream(${error || ''})`);\n            try {\n                sourceUpdater.mediaSource.endOfStream(error);\n            } catch (e) {\n                videojs.log.warn('Failed to call media source endOfStream', e);\n            }\n        },\n        duration: duration => sourceUpdater => {\n            sourceUpdater.logger_(`Setting mediaSource duration to ${duration}`);\n            try {\n                sourceUpdater.mediaSource.duration = duration;\n            } catch (e) {\n                videojs.log.warn('Failed to set media source duration', e);\n            }\n        },\n        abort: () => (type, sourceUpdater) => {\n            if (sourceUpdater.mediaSource.readyState !== 'open') {\n                return;\n            }\n            const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null\n            // or the media source does not contain this source buffer.\n\n            if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n                return;\n            }\n            sourceUpdater.logger_(`calling abort on ${type}Buffer`);\n            try {\n                sourceBuffer.abort();\n            } catch (e) {\n                videojs.log.warn(`Failed to abort on ${type}Buffer`, e);\n            }\n        },\n        addSourceBuffer: (type, codec) => sourceUpdater => {\n            const titleType = toTitleCase(type);\n            const mime = getMimeForCodec(codec);\n            sourceUpdater.logger_(`Adding ${type}Buffer with codec ${codec} to mediaSource`);\n            const sourceBuffer = sourceUpdater.mediaSource.addSourceBuffer(mime);\n            sourceBuffer.addEventListener('updateend', sourceUpdater[`on${titleType}UpdateEnd_`]);\n            sourceBuffer.addEventListener('error', sourceUpdater[`on${titleType}Error_`]);\n            sourceUpdater.codecs[type] = codec;\n            sourceUpdater[`${type}Buffer`] = sourceBuffer;\n        },\n        removeSourceBuffer: type => sourceUpdater => {\n            const sourceBuffer = sourceUpdater[`${type}Buffer`];\n            cleanupBuffer(type, sourceUpdater); // can't do anything if the media source / source buffer is null\n            // or the media source does not contain this source buffer.\n\n            if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n                return;\n            }\n            sourceUpdater.logger_(`Removing ${type}Buffer with codec ${sourceUpdater.codecs[type]} from mediaSource`);\n            try {\n                sourceUpdater.mediaSource.removeSourceBuffer(sourceBuffer);\n            } catch (e) {\n                videojs.log.warn(`Failed to removeSourceBuffer ${type}Buffer`, e);\n            }\n        },\n        changeType: codec => (type, sourceUpdater) => {\n            const sourceBuffer = sourceUpdater[`${type}Buffer`];\n            const mime = getMimeForCodec(codec); // can't do anything if the media source / source buffer is null\n            // or the media source does not contain this source buffer.\n\n            if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n                return;\n            } // do not update codec if we don't need to.\n\n            if (sourceUpdater.codecs[type] === codec) {\n                return;\n            }\n            sourceUpdater.logger_(`changing ${type}Buffer codec from ${sourceUpdater.codecs[type]} to ${codec}`);\n            sourceBuffer.changeType(mime);\n            sourceUpdater.codecs[type] = codec;\n        }\n    };\n    const pushQueue = ({\n                           type,\n                           sourceUpdater,\n                           action,\n                           doneFn,\n                           name\n                       }) => {\n        sourceUpdater.queue.push({\n            type,\n            action,\n            doneFn,\n            name\n        });\n        shiftQueue(type, sourceUpdater);\n    };\n    const onUpdateend = (type, sourceUpdater) => e => {\n        // Although there should, in theory, be a pending action for any updateend receieved,\n        // there are some actions that may trigger updateend events without set definitions in\n        // the w3c spec. For instance, setting the duration on the media source may trigger\n        // updateend events on source buffers. This does not appear to be in the spec. As such,\n        // if we encounter an updateend without a corresponding pending action from our queue\n        // for that source buffer type, process the next action.\n        if (sourceUpdater.queuePending[type]) {\n            const doneFn = sourceUpdater.queuePending[type].doneFn;\n            sourceUpdater.queuePending[type] = null;\n            if (doneFn) {\n                // if there's an error, report it\n                doneFn(sourceUpdater[`${type}Error_`]);\n            }\n        }\n        shiftQueue(type, sourceUpdater);\n    };\n    /**\n     * A queue of callbacks to be serialized and applied when a\n     * MediaSource and its associated SourceBuffers are not in the\n     * updating state. It is used by the segment loader to update the\n     * underlying SourceBuffers when new data is loaded, for instance.\n     *\n     * @class SourceUpdater\n     * @param {MediaSource} mediaSource the MediaSource to create the SourceBuffer from\n     * @param {string} mimeType the desired MIME type of the underlying SourceBuffer\n     */\n\n    class SourceUpdater extends videojs.EventTarget {\n        constructor(mediaSource) {\n            super();\n            this.mediaSource = mediaSource;\n            this.sourceopenListener_ = () => shiftQueue('mediaSource', this);\n            this.mediaSource.addEventListener('sourceopen', this.sourceopenListener_);\n            this.logger_ = logger('SourceUpdater'); // initial timestamp offset is 0\n\n            this.audioTimestampOffset_ = 0;\n            this.videoTimestampOffset_ = 0;\n            this.queue = [];\n            this.queuePending = {\n                audio: null,\n                video: null\n            };\n            this.delayedAudioAppendQueue_ = [];\n            this.videoAppendQueued_ = false;\n            this.codecs = {};\n            this.onVideoUpdateEnd_ = onUpdateend('video', this);\n            this.onAudioUpdateEnd_ = onUpdateend('audio', this);\n            this.onVideoError_ = e => {\n                // used for debugging\n                this.videoError_ = e;\n            };\n            this.onAudioError_ = e => {\n                // used for debugging\n                this.audioError_ = e;\n            };\n            this.createdSourceBuffers_ = false;\n            this.initializedEme_ = false;\n            this.triggeredReady_ = false;\n        }\n        initializedEme() {\n            this.initializedEme_ = true;\n            this.triggerReady();\n        }\n        hasCreatedSourceBuffers() {\n            // if false, likely waiting on one of the segment loaders to get enough data to create\n            // source buffers\n            return this.createdSourceBuffers_;\n        }\n        hasInitializedAnyEme() {\n            return this.initializedEme_;\n        }\n        ready() {\n            return this.hasCreatedSourceBuffers() && this.hasInitializedAnyEme();\n        }\n        createSourceBuffers(codecs) {\n            if (this.hasCreatedSourceBuffers()) {\n                // already created them before\n                return;\n            } // the intial addOrChangeSourceBuffers will always be\n            // two add buffers.\n\n            this.addOrChangeSourceBuffers(codecs);\n            this.createdSourceBuffers_ = true;\n            this.trigger('createdsourcebuffers');\n            this.triggerReady();\n        }\n        triggerReady() {\n            // only allow ready to be triggered once, this prevents the case\n            // where:\n            // 1. we trigger createdsourcebuffers\n            // 2. ie 11 synchronously initializates eme\n            // 3. the synchronous initialization causes us to trigger ready\n            // 4. We go back to the ready check in createSourceBuffers and ready is triggered again.\n            if (this.ready() && !this.triggeredReady_) {\n                this.triggeredReady_ = true;\n                this.trigger('ready');\n            }\n        }\n        /**\n         * Add a type of source buffer to the media source.\n         *\n         * @param {string} type\n         *        The type of source buffer to add.\n         *\n         * @param {string} codec\n         *        The codec to add the source buffer with.\n         */\n\n        addSourceBuffer(type, codec) {\n            pushQueue({\n                type: 'mediaSource',\n                sourceUpdater: this,\n                action: actions.addSourceBuffer(type, codec),\n                name: 'addSourceBuffer'\n            });\n        }\n        /**\n         * call abort on a source buffer.\n         *\n         * @param {string} type\n         *        The type of source buffer to call abort on.\n         */\n\n        abort(type) {\n            pushQueue({\n                type,\n                sourceUpdater: this,\n                action: actions.abort(type),\n                name: 'abort'\n            });\n        }\n        /**\n         * Call removeSourceBuffer and remove a specific type\n         * of source buffer on the mediaSource.\n         *\n         * @param {string} type\n         *        The type of source buffer to remove.\n         */\n\n        removeSourceBuffer(type) {\n            if (!this.canRemoveSourceBuffer()) {\n                videojs.log.error('removeSourceBuffer is not supported!');\n                return;\n            }\n            pushQueue({\n                type: 'mediaSource',\n                sourceUpdater: this,\n                action: actions.removeSourceBuffer(type),\n                name: 'removeSourceBuffer'\n            });\n        }\n        /**\n         * Whether or not the removeSourceBuffer function is supported\n         * on the mediaSource.\n         *\n         * @return {boolean}\n         *          if removeSourceBuffer can be called.\n         */\n\n        canRemoveSourceBuffer() {\n            // IE reports that it supports removeSourceBuffer, but often throws\n            // errors when attempting to use the function. So we report that it\n            // does not support removeSourceBuffer. As of Firefox 83 removeSourceBuffer\n            // throws errors, so we report that it does not support this as well.\n            return !videojs.browser.IE_VERSION && !videojs.browser.IS_FIREFOX && window.MediaSource && window.MediaSource.prototype && typeof window.MediaSource.prototype.removeSourceBuffer === 'function';\n        }\n        /**\n         * Whether or not the changeType function is supported\n         * on our SourceBuffers.\n         *\n         * @return {boolean}\n         *         if changeType can be called.\n         */\n\n        static canChangeType() {\n            return window.SourceBuffer && window.SourceBuffer.prototype && typeof window.SourceBuffer.prototype.changeType === 'function';\n        }\n        /**\n         * Whether or not the changeType function is supported\n         * on our SourceBuffers.\n         *\n         * @return {boolean}\n         *         if changeType can be called.\n         */\n\n        canChangeType() {\n            return this.constructor.canChangeType();\n        }\n        /**\n         * Call the changeType function on a source buffer, given the code and type.\n         *\n         * @param {string} type\n         *        The type of source buffer to call changeType on.\n         *\n         * @param {string} codec\n         *        The codec string to change type with on the source buffer.\n         */\n\n        changeType(type, codec) {\n            if (!this.canChangeType()) {\n                videojs.log.error('changeType is not supported!');\n                return;\n            }\n            pushQueue({\n                type,\n                sourceUpdater: this,\n                action: actions.changeType(codec),\n                name: 'changeType'\n            });\n        }\n        /**\n         * Add source buffers with a codec or, if they are already created,\n         * call changeType on source buffers using changeType.\n         *\n         * @param {Object} codecs\n         *        Codecs to switch to\n         */\n\n        addOrChangeSourceBuffers(codecs) {\n            if (!codecs || typeof codecs !== 'object' || Object.keys(codecs).length === 0) {\n                throw new Error('Cannot addOrChangeSourceBuffers to undefined codecs');\n            }\n            Object.keys(codecs).forEach(type => {\n                const codec = codecs[type];\n                if (!this.hasCreatedSourceBuffers()) {\n                    return this.addSourceBuffer(type, codec);\n                }\n                if (this.canChangeType()) {\n                    this.changeType(type, codec);\n                }\n            });\n        }\n        /**\n         * Queue an update to append an ArrayBuffer.\n         *\n         * @param {MediaObject} object containing audioBytes and/or videoBytes\n         * @param {Function} done the function to call when done\n         * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-appendBuffer-void-ArrayBuffer-data\n         */\n\n        appendBuffer(options, doneFn) {\n            const {\n                segmentInfo,\n                type,\n                bytes\n            } = options;\n            this.processedAppend_ = true;\n            if (type === 'audio' && this.videoBuffer && !this.videoAppendQueued_) {\n                this.delayedAudioAppendQueue_.push([options, doneFn]);\n                this.logger_(`delayed audio append of ${bytes.length} until video append`);\n                return;\n            } // In the case of certain errors, for instance, QUOTA_EXCEEDED_ERR, updateend will\n            // not be fired. This means that the queue will be blocked until the next action\n            // taken by the segment-loader. Provide a mechanism for segment-loader to handle\n            // these errors by calling the doneFn with the specific error.\n\n            const onError = doneFn;\n            pushQueue({\n                type,\n                sourceUpdater: this,\n                action: actions.appendBuffer(bytes, segmentInfo || {\n                    mediaIndex: -1\n                }, onError),\n                doneFn,\n                name: 'appendBuffer'\n            });\n            if (type === 'video') {\n                this.videoAppendQueued_ = true;\n                if (!this.delayedAudioAppendQueue_.length) {\n                    return;\n                }\n                const queue = this.delayedAudioAppendQueue_.slice();\n                this.logger_(`queuing delayed audio ${queue.length} appendBuffers`);\n                this.delayedAudioAppendQueue_.length = 0;\n                queue.forEach(que => {\n                    this.appendBuffer.apply(this, que);\n                });\n            }\n        }\n        /**\n         * Get the audio buffer's buffered timerange.\n         *\n         * @return {TimeRange}\n         *         The audio buffer's buffered time range\n         */\n\n        audioBuffered() {\n            // no media source/source buffer or it isn't in the media sources\n            // source buffer list\n            if (!inSourceBuffers(this.mediaSource, this.audioBuffer)) {\n                return createTimeRanges();\n            }\n            return this.audioBuffer.buffered ? this.audioBuffer.buffered : createTimeRanges();\n        }\n        /**\n         * Get the video buffer's buffered timerange.\n         *\n         * @return {TimeRange}\n         *         The video buffer's buffered time range\n         */\n\n        videoBuffered() {\n            // no media source/source buffer or it isn't in the media sources\n            // source buffer list\n            if (!inSourceBuffers(this.mediaSource, this.videoBuffer)) {\n                return createTimeRanges();\n            }\n            return this.videoBuffer.buffered ? this.videoBuffer.buffered : createTimeRanges();\n        }\n        /**\n         * Get a combined video/audio buffer's buffered timerange.\n         *\n         * @return {TimeRange}\n         *         the combined time range\n         */\n\n        buffered() {\n            const video = inSourceBuffers(this.mediaSource, this.videoBuffer) ? this.videoBuffer : null;\n            const audio = inSourceBuffers(this.mediaSource, this.audioBuffer) ? this.audioBuffer : null;\n            if (audio && !video) {\n                return this.audioBuffered();\n            }\n            if (video && !audio) {\n                return this.videoBuffered();\n            }\n            return bufferIntersection(this.audioBuffered(), this.videoBuffered());\n        }\n        /**\n         * Add a callback to the queue that will set duration on the mediaSource.\n         *\n         * @param {number} duration\n         *        The duration to set\n         *\n         * @param {Function} [doneFn]\n         *        function to run after duration has been set.\n         */\n\n        setDuration(duration, doneFn = noop) {\n            // In order to set the duration on the media source, it's necessary to wait for all\n            // source buffers to no longer be updating. \"If the updating attribute equals true on\n            // any SourceBuffer in sourceBuffers, then throw an InvalidStateError exception and\n            // abort these steps.\" (source: https://www.w3.org/TR/media-source/#attributes).\n            pushQueue({\n                type: 'mediaSource',\n                sourceUpdater: this,\n                action: actions.duration(duration),\n                name: 'duration',\n                doneFn\n            });\n        }\n        /**\n         * Add a mediaSource endOfStream call to the queue\n         *\n         * @param {Error} [error]\n         *        Call endOfStream with an error\n         *\n         * @param {Function} [doneFn]\n         *        A function that should be called when the\n         *        endOfStream call has finished.\n         */\n\n        endOfStream(error = null, doneFn = noop) {\n            if (typeof error !== 'string') {\n                error = undefined;\n            } // In order to set the duration on the media source, it's necessary to wait for all\n            // source buffers to no longer be updating. \"If the updating attribute equals true on\n            // any SourceBuffer in sourceBuffers, then throw an InvalidStateError exception and\n            // abort these steps.\" (source: https://www.w3.org/TR/media-source/#attributes).\n\n            pushQueue({\n                type: 'mediaSource',\n                sourceUpdater: this,\n                action: actions.endOfStream(error),\n                name: 'endOfStream',\n                doneFn\n            });\n        }\n        /**\n         * Queue an update to remove a time range from the buffer.\n         *\n         * @param {number} start where to start the removal\n         * @param {number} end where to end the removal\n         * @param {Function} [done=noop] optional callback to be executed when the remove\n         * operation is complete\n         * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end\n         */\n\n        removeAudio(start, end, done = noop) {\n            if (!this.audioBuffered().length || this.audioBuffered().end(0) === 0) {\n                done();\n                return;\n            }\n            pushQueue({\n                type: 'audio',\n                sourceUpdater: this,\n                action: actions.remove(start, end),\n                doneFn: done,\n                name: 'remove'\n            });\n        }\n        /**\n         * Queue an update to remove a time range from the buffer.\n         *\n         * @param {number} start where to start the removal\n         * @param {number} end where to end the removal\n         * @param {Function} [done=noop] optional callback to be executed when the remove\n         * operation is complete\n         * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end\n         */\n\n        removeVideo(start, end, done = noop) {\n            if (!this.videoBuffered().length || this.videoBuffered().end(0) === 0) {\n                done();\n                return;\n            }\n            pushQueue({\n                type: 'video',\n                sourceUpdater: this,\n                action: actions.remove(start, end),\n                doneFn: done,\n                name: 'remove'\n            });\n        }\n        /**\n         * Whether the underlying sourceBuffer is updating or not\n         *\n         * @return {boolean} the updating status of the SourceBuffer\n         */\n\n        updating() {\n            // the audio/video source buffer is updating\n            if (updating('audio', this) || updating('video', this)) {\n                return true;\n            }\n            return false;\n        }\n        /**\n         * Set/get the timestampoffset on the audio SourceBuffer\n         *\n         * @return {number} the timestamp offset\n         */\n\n        audioTimestampOffset(offset) {\n            if (typeof offset !== 'undefined' && this.audioBuffer &&\n                // no point in updating if it's the same\n                this.audioTimestampOffset_ !== offset) {\n                pushQueue({\n                    type: 'audio',\n                    sourceUpdater: this,\n                    action: actions.timestampOffset(offset),\n                    name: 'timestampOffset'\n                });\n                this.audioTimestampOffset_ = offset;\n            }\n            return this.audioTimestampOffset_;\n        }\n        /**\n         * Set/get the timestampoffset on the video SourceBuffer\n         *\n         * @return {number} the timestamp offset\n         */\n\n        videoTimestampOffset(offset) {\n            if (typeof offset !== 'undefined' && this.videoBuffer &&\n                // no point in updating if it's the same\n                this.videoTimestampOffset !== offset) {\n                pushQueue({\n                    type: 'video',\n                    sourceUpdater: this,\n                    action: actions.timestampOffset(offset),\n                    name: 'timestampOffset'\n                });\n                this.videoTimestampOffset_ = offset;\n            }\n            return this.videoTimestampOffset_;\n        }\n        /**\n         * Add a function to the queue that will be called\n         * when it is its turn to run in the audio queue.\n         *\n         * @param {Function} callback\n         *        The callback to queue.\n         */\n\n        audioQueueCallback(callback) {\n            if (!this.audioBuffer) {\n                return;\n            }\n            pushQueue({\n                type: 'audio',\n                sourceUpdater: this,\n                action: actions.callback(callback),\n                name: 'callback'\n            });\n        }\n        /**\n         * Add a function to the queue that will be called\n         * when it is its turn to run in the video queue.\n         *\n         * @param {Function} callback\n         *        The callback to queue.\n         */\n\n        videoQueueCallback(callback) {\n            if (!this.videoBuffer) {\n                return;\n            }\n            pushQueue({\n                type: 'video',\n                sourceUpdater: this,\n                action: actions.callback(callback),\n                name: 'callback'\n            });\n        }\n        /**\n         * dispose of the source updater and the underlying sourceBuffer\n         */\n\n        dispose() {\n            this.trigger('dispose');\n            bufferTypes.forEach(type => {\n                this.abort(type);\n                if (this.canRemoveSourceBuffer()) {\n                    this.removeSourceBuffer(type);\n                } else {\n                    this[`${type}QueueCallback`](() => cleanupBuffer(type, this));\n                }\n            });\n            this.videoAppendQueued_ = false;\n            this.delayedAudioAppendQueue_.length = 0;\n            if (this.sourceopenListener_) {\n                this.mediaSource.removeEventListener('sourceopen', this.sourceopenListener_);\n            }\n            this.off();\n        }\n    }\n    const uint8ToUtf8 = uintArray => decodeURIComponent(escape(String.fromCharCode.apply(null, uintArray)));\n\n    /**\n     * @file vtt-segment-loader.js\n     */\n    const VTT_LINE_TERMINATORS = new Uint8Array('\\n\\n'.split('').map(char => char.charCodeAt(0)));\n    class NoVttJsError extends Error {\n        constructor() {\n            super('Trying to parse received VTT cues, but there is no WebVTT. Make sure vtt.js is loaded.');\n        }\n    }\n    /**\n     * An object that manages segment loading and appending.\n     *\n     * @class VTTSegmentLoader\n     * @param {Object} options required and optional options\n     * @extends videojs.EventTarget\n     */\n\n    class VTTSegmentLoader extends SegmentLoader {\n        constructor(settings, options = {}) {\n            super(settings, options); // SegmentLoader requires a MediaSource be specified or it will throw an error;\n            // however, VTTSegmentLoader has no need of a media source, so delete the reference\n\n            this.mediaSource_ = null;\n            this.subtitlesTrack_ = null;\n            this.loaderType_ = 'subtitle';\n            this.featuresNativeTextTracks_ = settings.featuresNativeTextTracks;\n            this.loadVttJs = settings.loadVttJs; // The VTT segment will have its own time mappings. Saving VTT segment timing info in\n            // the sync controller leads to improper behavior.\n\n            this.shouldSaveSegmentTimingInfo_ = false;\n        }\n        createTransmuxer_() {\n            // don't need to transmux any subtitles\n            return null;\n        }\n        /**\n         * Indicates which time ranges are buffered\n         *\n         * @return {TimeRange}\n         *         TimeRange object representing the current buffered ranges\n         */\n\n        buffered_() {\n            if (!this.subtitlesTrack_ || !this.subtitlesTrack_.cues || !this.subtitlesTrack_.cues.length) {\n                return createTimeRanges();\n            }\n            const cues = this.subtitlesTrack_.cues;\n            const start = cues[0].startTime;\n            const end = cues[cues.length - 1].startTime;\n            return createTimeRanges([[start, end]]);\n        }\n        /**\n         * Gets and sets init segment for the provided map\n         *\n         * @param {Object} map\n         *        The map object representing the init segment to get or set\n         * @param {boolean=} set\n         *        If true, the init segment for the provided map should be saved\n         * @return {Object}\n         *         map object for desired init segment\n         */\n\n        initSegmentForMap(map, set = false) {\n            if (!map) {\n                return null;\n            }\n            const id = initSegmentId(map);\n            let storedMap = this.initSegments_[id];\n            if (set && !storedMap && map.bytes) {\n                // append WebVTT line terminators to the media initialization segment if it exists\n                // to follow the WebVTT spec (https://w3c.github.io/webvtt/#file-structure) that\n                // requires two or more WebVTT line terminators between the WebVTT header and the\n                // rest of the file\n                const combinedByteLength = VTT_LINE_TERMINATORS.byteLength + map.bytes.byteLength;\n                const combinedSegment = new Uint8Array(combinedByteLength);\n                combinedSegment.set(map.bytes);\n                combinedSegment.set(VTT_LINE_TERMINATORS, map.bytes.byteLength);\n                this.initSegments_[id] = storedMap = {\n                    resolvedUri: map.resolvedUri,\n                    byterange: map.byterange,\n                    bytes: combinedSegment\n                };\n            }\n            return storedMap || map;\n        }\n        /**\n         * Returns true if all configuration required for loading is present, otherwise false.\n         *\n         * @return {boolean} True if the all configuration is ready for loading\n         * @private\n         */\n\n        couldBeginLoading_() {\n            return this.playlist_ && this.subtitlesTrack_ && !this.paused();\n        }\n        /**\n         * Once all the starting parameters have been specified, begin\n         * operation. This method should only be invoked from the INIT\n         * state.\n         *\n         * @private\n         */\n\n        init_() {\n            this.state = 'READY';\n            this.resetEverything();\n            return this.monitorBuffer_();\n        }\n        /**\n         * Set a subtitle track on the segment loader to add subtitles to\n         *\n         * @param {TextTrack=} track\n         *        The text track to add loaded subtitles to\n         * @return {TextTrack}\n         *        Returns the subtitles track\n         */\n\n        track(track) {\n            if (typeof track === 'undefined') {\n                return this.subtitlesTrack_;\n            }\n            this.subtitlesTrack_ = track; // if we were unpaused but waiting for a sourceUpdater, start\n            // buffering now\n\n            if (this.state === 'INIT' && this.couldBeginLoading_()) {\n                this.init_();\n            }\n            return this.subtitlesTrack_;\n        }\n        /**\n         * Remove any data in the source buffer between start and end times\n         *\n         * @param {number} start - the start time of the region to remove from the buffer\n         * @param {number} end - the end time of the region to remove from the buffer\n         */\n\n        remove(start, end) {\n            removeCuesFromTrack(start, end, this.subtitlesTrack_);\n        }\n        /**\n         * fill the buffer with segements unless the sourceBuffers are\n         * currently updating\n         *\n         * Note: this function should only ever be called by monitorBuffer_\n         * and never directly\n         *\n         * @private\n         */\n\n        fillBuffer_() {\n            // see if we need to begin loading immediately\n            const segmentInfo = this.chooseNextRequest_();\n            if (!segmentInfo) {\n                return;\n            }\n            if (this.syncController_.timestampOffsetForTimeline(segmentInfo.timeline) === null) {\n                // We don't have the timestamp offset that we need to sync subtitles.\n                // Rerun on a timestamp offset or user interaction.\n                const checkTimestampOffset = () => {\n                    this.state = 'READY';\n                    if (!this.paused()) {\n                        // if not paused, queue a buffer check as soon as possible\n                        this.monitorBuffer_();\n                    }\n                };\n                this.syncController_.one('timestampoffset', checkTimestampOffset);\n                this.state = 'WAITING_ON_TIMELINE';\n                return;\n            }\n            this.loadSegment_(segmentInfo);\n        } // never set a timestamp offset for vtt segments.\n\n        timestampOffsetForSegment_() {\n            return null;\n        }\n        chooseNextRequest_() {\n            return this.skipEmptySegments_(super.chooseNextRequest_());\n        }\n        /**\n         * Prevents the segment loader from requesting segments we know contain no subtitles\n         * by walking forward until we find the next segment that we don't know whether it is\n         * empty or not.\n         *\n         * @param {Object} segmentInfo\n         *        a segment info object that describes the current segment\n         * @return {Object}\n         *         a segment info object that describes the current segment\n         */\n\n        skipEmptySegments_(segmentInfo) {\n            while (segmentInfo && segmentInfo.segment.empty) {\n                // stop at the last possible segmentInfo\n                if (segmentInfo.mediaIndex + 1 >= segmentInfo.playlist.segments.length) {\n                    segmentInfo = null;\n                    break;\n                }\n                segmentInfo = this.generateSegmentInfo_({\n                    playlist: segmentInfo.playlist,\n                    mediaIndex: segmentInfo.mediaIndex + 1,\n                    startOfSegment: segmentInfo.startOfSegment + segmentInfo.duration,\n                    isSyncRequest: segmentInfo.isSyncRequest\n                });\n            }\n            return segmentInfo;\n        }\n        stopForError(error) {\n            this.error(error);\n            this.state = 'READY';\n            this.pause();\n            this.trigger('error');\n        }\n        /**\n         * append a decrypted segement to the SourceBuffer through a SourceUpdater\n         *\n         * @private\n         */\n\n        segmentRequestFinished_(error, simpleSegment, result) {\n            if (!this.subtitlesTrack_) {\n                this.state = 'READY';\n                return;\n            }\n            this.saveTransferStats_(simpleSegment.stats); // the request was aborted\n\n            if (!this.pendingSegment_) {\n                this.state = 'READY';\n                this.mediaRequestsAborted += 1;\n                return;\n            }\n            if (error) {\n                if (error.code === REQUEST_ERRORS.TIMEOUT) {\n                    this.handleTimeout_();\n                }\n                if (error.code === REQUEST_ERRORS.ABORTED) {\n                    this.mediaRequestsAborted += 1;\n                } else {\n                    this.mediaRequestsErrored += 1;\n                }\n                this.stopForError(error);\n                return;\n            }\n            const segmentInfo = this.pendingSegment_; // although the VTT segment loader bandwidth isn't really used, it's good to\n            // maintain functionality between segment loaders\n\n            this.saveBandwidthRelatedStats_(segmentInfo.duration, simpleSegment.stats); // if this request included a segment key, save that data in the cache\n\n            if (simpleSegment.key) {\n                this.segmentKey(simpleSegment.key, true);\n            }\n            this.state = 'APPENDING'; // used for tests\n\n            this.trigger('appending');\n            const segment = segmentInfo.segment;\n            if (segment.map) {\n                segment.map.bytes = simpleSegment.map.bytes;\n            }\n            segmentInfo.bytes = simpleSegment.bytes; // Make sure that vttjs has loaded, otherwise, load it and wait till it finished loading\n\n            if (typeof window.WebVTT !== 'function' && typeof this.loadVttJs === 'function') {\n                this.state = 'WAITING_ON_VTTJS'; // should be fine to call multiple times\n                // script will be loaded once but multiple listeners will be added to the queue, which is expected.\n\n                this.loadVttJs().then(() => this.segmentRequestFinished_(error, simpleSegment, result), () => this.stopForError({\n                    message: 'Error loading vtt.js'\n                }));\n                return;\n            }\n            segment.requested = true;\n            try {\n                this.parseVTTCues_(segmentInfo);\n            } catch (e) {\n                this.stopForError({\n                    message: e.message\n                });\n                return;\n            }\n            this.updateTimeMapping_(segmentInfo, this.syncController_.timelines[segmentInfo.timeline], this.playlist_);\n            if (segmentInfo.cues.length) {\n                segmentInfo.timingInfo = {\n                    start: segmentInfo.cues[0].startTime,\n                    end: segmentInfo.cues[segmentInfo.cues.length - 1].endTime\n                };\n            } else {\n                segmentInfo.timingInfo = {\n                    start: segmentInfo.startOfSegment,\n                    end: segmentInfo.startOfSegment + segmentInfo.duration\n                };\n            }\n            if (segmentInfo.isSyncRequest) {\n                this.trigger('syncinfoupdate');\n                this.pendingSegment_ = null;\n                this.state = 'READY';\n                return;\n            }\n            segmentInfo.byteLength = segmentInfo.bytes.byteLength;\n            this.mediaSecondsLoaded += segment.duration; // Create VTTCue instances for each cue in the new segment and add them to\n            // the subtitle track\n\n            segmentInfo.cues.forEach(cue => {\n                this.subtitlesTrack_.addCue(this.featuresNativeTextTracks_ ? new window.VTTCue(cue.startTime, cue.endTime, cue.text) : cue);\n            }); // Remove any duplicate cues from the subtitle track. The WebVTT spec allows\n            // cues to have identical time-intervals, but if the text is also identical\n            // we can safely assume it is a duplicate that can be removed (ex. when a cue\n            // \"overlaps\" VTT segments)\n\n            removeDuplicateCuesFromTrack(this.subtitlesTrack_);\n            this.handleAppendsDone_();\n        }\n        handleData_() {// noop as we shouldn't be getting video/audio data captions\n            // that we do not support here.\n        }\n        updateTimingInfoEnd_() {// noop\n        }\n        /**\n         * Uses the WebVTT parser to parse the segment response\n         *\n         * @throws NoVttJsError\n         *\n         * @param {Object} segmentInfo\n         *        a segment info object that describes the current segment\n         * @private\n         */\n\n        parseVTTCues_(segmentInfo) {\n            let decoder;\n            let decodeBytesToString = false;\n            if (typeof window.WebVTT !== 'function') {\n                // caller is responsible for exception handling.\n                throw new NoVttJsError();\n            }\n            if (typeof window.TextDecoder === 'function') {\n                decoder = new window.TextDecoder('utf8');\n            } else {\n                decoder = window.WebVTT.StringDecoder();\n                decodeBytesToString = true;\n            }\n            const parser = new window.WebVTT.Parser(window, window.vttjs, decoder);\n            segmentInfo.cues = [];\n            segmentInfo.timestampmap = {\n                MPEGTS: 0,\n                LOCAL: 0\n            };\n            parser.oncue = segmentInfo.cues.push.bind(segmentInfo.cues);\n            parser.ontimestampmap = map => {\n                segmentInfo.timestampmap = map;\n            };\n            parser.onparsingerror = error => {\n                videojs.log.warn('Error encountered when parsing cues: ' + error.message);\n            };\n            if (segmentInfo.segment.map) {\n                let mapData = segmentInfo.segment.map.bytes;\n                if (decodeBytesToString) {\n                    mapData = uint8ToUtf8(mapData);\n                }\n                parser.parse(mapData);\n            }\n            let segmentData = segmentInfo.bytes;\n            if (decodeBytesToString) {\n                segmentData = uint8ToUtf8(segmentData);\n            }\n            parser.parse(segmentData);\n            parser.flush();\n        }\n        /**\n         * Updates the start and end times of any cues parsed by the WebVTT parser using\n         * the information parsed from the X-TIMESTAMP-MAP header and a TS to media time mapping\n         * from the SyncController\n         *\n         * @param {Object} segmentInfo\n         *        a segment info object that describes the current segment\n         * @param {Object} mappingObj\n         *        object containing a mapping from TS to media time\n         * @param {Object} playlist\n         *        the playlist object containing the segment\n         * @private\n         */\n\n        updateTimeMapping_(segmentInfo, mappingObj, playlist) {\n            const segment = segmentInfo.segment;\n            if (!mappingObj) {\n                // If the sync controller does not have a mapping of TS to Media Time for the\n                // timeline, then we don't have enough information to update the cue\n                // start/end times\n                return;\n            }\n            if (!segmentInfo.cues.length) {\n                // If there are no cues, we also do not have enough information to figure out\n                // segment timing. Mark that the segment contains no cues so we don't re-request\n                // an empty segment.\n                segment.empty = true;\n                return;\n            }\n            const timestampmap = segmentInfo.timestampmap;\n            const diff = timestampmap.MPEGTS / clock_1 - timestampmap.LOCAL + mappingObj.mapping;\n            segmentInfo.cues.forEach(cue => {\n                // First convert cue time to TS time using the timestamp-map provided within the vtt\n                cue.startTime += diff;\n                cue.endTime += diff;\n            });\n            if (!playlist.syncInfo) {\n                const firstStart = segmentInfo.cues[0].startTime;\n                const lastStart = segmentInfo.cues[segmentInfo.cues.length - 1].startTime;\n                playlist.syncInfo = {\n                    mediaSequence: playlist.mediaSequence + segmentInfo.mediaIndex,\n                    time: Math.min(firstStart, lastStart - segment.duration)\n                };\n            }\n        }\n    }\n\n    /**\n     * @file ad-cue-tags.js\n     */\n    /**\n     * Searches for an ad cue that overlaps with the given mediaTime\n     *\n     * @param {Object} track\n     *        the track to find the cue for\n     *\n     * @param {number} mediaTime\n     *        the time to find the cue at\n     *\n     * @return {Object|null}\n     *         the found cue or null\n     */\n\n    const findAdCue = function (track, mediaTime) {\n        const cues = track.cues;\n        for (let i = 0; i < cues.length; i++) {\n            const cue = cues[i];\n            if (mediaTime >= cue.adStartTime && mediaTime <= cue.adEndTime) {\n                return cue;\n            }\n        }\n        return null;\n    };\n    const updateAdCues = function (media, track, offset = 0) {\n        if (!media.segments) {\n            return;\n        }\n        let mediaTime = offset;\n        let cue;\n        for (let i = 0; i < media.segments.length; i++) {\n            const segment = media.segments[i];\n            if (!cue) {\n                // Since the cues will span for at least the segment duration, adding a fudge\n                // factor of half segment duration will prevent duplicate cues from being\n                // created when timing info is not exact (e.g. cue start time initialized\n                // at 10.006677, but next call mediaTime is 10.003332 )\n                cue = findAdCue(track, mediaTime + segment.duration / 2);\n            }\n            if (cue) {\n                if ('cueIn' in segment) {\n                    // Found a CUE-IN so end the cue\n                    cue.endTime = mediaTime;\n                    cue.adEndTime = mediaTime;\n                    mediaTime += segment.duration;\n                    cue = null;\n                    continue;\n                }\n                if (mediaTime < cue.endTime) {\n                    // Already processed this mediaTime for this cue\n                    mediaTime += segment.duration;\n                    continue;\n                } // otherwise extend cue until a CUE-IN is found\n\n                cue.endTime += segment.duration;\n            } else {\n                if ('cueOut' in segment) {\n                    cue = new window.VTTCue(mediaTime, mediaTime + segment.duration, segment.cueOut);\n                    cue.adStartTime = mediaTime; // Assumes tag format to be\n                    // #EXT-X-CUE-OUT:30\n\n                    cue.adEndTime = mediaTime + parseFloat(segment.cueOut);\n                    track.addCue(cue);\n                }\n                if ('cueOutCont' in segment) {\n                    // Entered into the middle of an ad cue\n                    // Assumes tag formate to be\n                    // #EXT-X-CUE-OUT-CONT:10/30\n                    const [adOffset, adTotal] = segment.cueOutCont.split('/').map(parseFloat);\n                    cue = new window.VTTCue(mediaTime, mediaTime + segment.duration, '');\n                    cue.adStartTime = mediaTime - adOffset;\n                    cue.adEndTime = cue.adStartTime + adTotal;\n                    track.addCue(cue);\n                }\n            }\n            mediaTime += segment.duration;\n        }\n    };\n\n    /**\n     * @file sync-controller.js\n     */\n        // synchronize expired playlist segments.\n        // the max media sequence diff is 48 hours of live stream\n        // content with two second segments. Anything larger than that\n        // will likely be invalid.\n\n    const MAX_MEDIA_SEQUENCE_DIFF_FOR_SYNC = 86400;\n    const syncPointStrategies = [\n        // Stategy \"VOD\": Handle the VOD-case where the sync-point is *always*\n        //                the equivalence display-time 0 === segment-index 0\n        {\n            name: 'VOD',\n            run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n                if (duration !== Infinity) {\n                    const syncPoint = {\n                        time: 0,\n                        segmentIndex: 0,\n                        partIndex: null\n                    };\n                    return syncPoint;\n                }\n                return null;\n            }\n        },\n        // Stategy \"ProgramDateTime\": We have a program-date-time tag in this playlist\n        {\n            name: 'ProgramDateTime',\n            run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n                if (!Object.keys(syncController.timelineToDatetimeMappings).length) {\n                    return null;\n                }\n                let syncPoint = null;\n                let lastDistance = null;\n                const partsAndSegments = getPartsAndSegments(playlist);\n                currentTime = currentTime || 0;\n                for (let i = 0; i < partsAndSegments.length; i++) {\n                    // start from the end and loop backwards for live\n                    // or start from the front and loop forwards for non-live\n                    const index = playlist.endList || currentTime === 0 ? i : partsAndSegments.length - (i + 1);\n                    const partAndSegment = partsAndSegments[index];\n                    const segment = partAndSegment.segment;\n                    const datetimeMapping = syncController.timelineToDatetimeMappings[segment.timeline];\n                    if (!datetimeMapping || !segment.dateTimeObject) {\n                        continue;\n                    }\n                    const segmentTime = segment.dateTimeObject.getTime() / 1000;\n                    let start = segmentTime + datetimeMapping; // take part duration into account.\n\n                    if (segment.parts && typeof partAndSegment.partIndex === 'number') {\n                        for (let z = 0; z < partAndSegment.partIndex; z++) {\n                            start += segment.parts[z].duration;\n                        }\n                    }\n                    const distance = Math.abs(currentTime - start); // Once the distance begins to increase, or if distance is 0, we have passed\n                    // currentTime and can stop looking for better candidates\n\n                    if (lastDistance !== null && (distance === 0 || lastDistance < distance)) {\n                        break;\n                    }\n                    lastDistance = distance;\n                    syncPoint = {\n                        time: start,\n                        segmentIndex: partAndSegment.segmentIndex,\n                        partIndex: partAndSegment.partIndex\n                    };\n                }\n                return syncPoint;\n            }\n        },\n        // Stategy \"Segment\": We have a known time mapping for a timeline and a\n        //                    segment in the current timeline with timing data\n        {\n            name: 'Segment',\n            run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n                let syncPoint = null;\n                let lastDistance = null;\n                currentTime = currentTime || 0;\n                const partsAndSegments = getPartsAndSegments(playlist);\n                for (let i = 0; i < partsAndSegments.length; i++) {\n                    // start from the end and loop backwards for live\n                    // or start from the front and loop forwards for non-live\n                    const index = playlist.endList || currentTime === 0 ? i : partsAndSegments.length - (i + 1);\n                    const partAndSegment = partsAndSegments[index];\n                    const segment = partAndSegment.segment;\n                    const start = partAndSegment.part && partAndSegment.part.start || segment && segment.start;\n                    if (segment.timeline === currentTimeline && typeof start !== 'undefined') {\n                        const distance = Math.abs(currentTime - start); // Once the distance begins to increase, we have passed\n                        // currentTime and can stop looking for better candidates\n\n                        if (lastDistance !== null && lastDistance < distance) {\n                            break;\n                        }\n                        if (!syncPoint || lastDistance === null || lastDistance >= distance) {\n                            lastDistance = distance;\n                            syncPoint = {\n                                time: start,\n                                segmentIndex: partAndSegment.segmentIndex,\n                                partIndex: partAndSegment.partIndex\n                            };\n                        }\n                    }\n                }\n                return syncPoint;\n            }\n        },\n        // Stategy \"Discontinuity\": We have a discontinuity with a known\n        //                          display-time\n        {\n            name: 'Discontinuity',\n            run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n                let syncPoint = null;\n                currentTime = currentTime || 0;\n                if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) {\n                    let lastDistance = null;\n                    for (let i = 0; i < playlist.discontinuityStarts.length; i++) {\n                        const segmentIndex = playlist.discontinuityStarts[i];\n                        const discontinuity = playlist.discontinuitySequence + i + 1;\n                        const discontinuitySync = syncController.discontinuities[discontinuity];\n                        if (discontinuitySync) {\n                            const distance = Math.abs(currentTime - discontinuitySync.time); // Once the distance begins to increase, we have passed\n                            // currentTime and can stop looking for better candidates\n\n                            if (lastDistance !== null && lastDistance < distance) {\n                                break;\n                            }\n                            if (!syncPoint || lastDistance === null || lastDistance >= distance) {\n                                lastDistance = distance;\n                                syncPoint = {\n                                    time: discontinuitySync.time,\n                                    segmentIndex,\n                                    partIndex: null\n                                };\n                            }\n                        }\n                    }\n                }\n                return syncPoint;\n            }\n        },\n        // Stategy \"Playlist\": We have a playlist with a known mapping of\n        //                     segment index to display time\n        {\n            name: 'Playlist',\n            run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n                if (playlist.syncInfo) {\n                    const syncPoint = {\n                        time: playlist.syncInfo.time,\n                        segmentIndex: playlist.syncInfo.mediaSequence - playlist.mediaSequence,\n                        partIndex: null\n                    };\n                    return syncPoint;\n                }\n                return null;\n            }\n        }];\n    class SyncController extends videojs.EventTarget {\n        constructor(options = {}) {\n            super(); // ...for synching across variants\n\n            this.timelines = [];\n            this.discontinuities = [];\n            this.timelineToDatetimeMappings = {};\n            this.logger_ = logger('SyncController');\n        }\n        /**\n         * Find a sync-point for the playlist specified\n         *\n         * A sync-point is defined as a known mapping from display-time to\n         * a segment-index in the current playlist.\n         *\n         * @param {Playlist} playlist\n         *        The playlist that needs a sync-point\n         * @param {number} duration\n         *        Duration of the MediaSource (Infinite if playing a live source)\n         * @param {number} currentTimeline\n         *        The last timeline from which a segment was loaded\n         * @return {Object}\n         *          A sync-point object\n         */\n\n        getSyncPoint(playlist, duration, currentTimeline, currentTime) {\n            const syncPoints = this.runStrategies_(playlist, duration, currentTimeline, currentTime);\n            if (!syncPoints.length) {\n                // Signal that we need to attempt to get a sync-point manually\n                // by fetching a segment in the playlist and constructing\n                // a sync-point from that information\n                return null;\n            } // Now find the sync-point that is closest to the currentTime because\n            // that should result in the most accurate guess about which segment\n            // to fetch\n\n            return this.selectSyncPoint_(syncPoints, {\n                key: 'time',\n                value: currentTime\n            });\n        }\n        /**\n         * Calculate the amount of time that has expired off the playlist during playback\n         *\n         * @param {Playlist} playlist\n         *        Playlist object to calculate expired from\n         * @param {number} duration\n         *        Duration of the MediaSource (Infinity if playling a live source)\n         * @return {number|null}\n         *          The amount of time that has expired off the playlist during playback. Null\n         *          if no sync-points for the playlist can be found.\n         */\n\n        getExpiredTime(playlist, duration) {\n            if (!playlist || !playlist.segments) {\n                return null;\n            }\n            const syncPoints = this.runStrategies_(playlist, duration, playlist.discontinuitySequence, 0); // Without sync-points, there is not enough information to determine the expired time\n\n            if (!syncPoints.length) {\n                return null;\n            }\n            const syncPoint = this.selectSyncPoint_(syncPoints, {\n                key: 'segmentIndex',\n                value: 0\n            }); // If the sync-point is beyond the start of the playlist, we want to subtract the\n            // duration from index 0 to syncPoint.segmentIndex instead of adding.\n\n            if (syncPoint.segmentIndex > 0) {\n                syncPoint.time *= -1;\n            }\n            return Math.abs(syncPoint.time + sumDurations({\n                defaultDuration: playlist.targetDuration,\n                durationList: playlist.segments,\n                startIndex: syncPoint.segmentIndex,\n                endIndex: 0\n            }));\n        }\n        /**\n         * Runs each sync-point strategy and returns a list of sync-points returned by the\n         * strategies\n         *\n         * @private\n         * @param {Playlist} playlist\n         *        The playlist that needs a sync-point\n         * @param {number} duration\n         *        Duration of the MediaSource (Infinity if playing a live source)\n         * @param {number} currentTimeline\n         *        The last timeline from which a segment was loaded\n         * @return {Array}\n         *          A list of sync-point objects\n         */\n\n        runStrategies_(playlist, duration, currentTimeline, currentTime) {\n            const syncPoints = []; // Try to find a sync-point in by utilizing various strategies...\n\n            for (let i = 0; i < syncPointStrategies.length; i++) {\n                const strategy = syncPointStrategies[i];\n                const syncPoint = strategy.run(this, playlist, duration, currentTimeline, currentTime);\n                if (syncPoint) {\n                    syncPoint.strategy = strategy.name;\n                    syncPoints.push({\n                        strategy: strategy.name,\n                        syncPoint\n                    });\n                }\n            }\n            return syncPoints;\n        }\n        /**\n         * Selects the sync-point nearest the specified target\n         *\n         * @private\n         * @param {Array} syncPoints\n         *        List of sync-points to select from\n         * @param {Object} target\n         *        Object specifying the property and value we are targeting\n         * @param {string} target.key\n         *        Specifies the property to target. Must be either 'time' or 'segmentIndex'\n         * @param {number} target.value\n         *        The value to target for the specified key.\n         * @return {Object}\n         *          The sync-point nearest the target\n         */\n\n        selectSyncPoint_(syncPoints, target) {\n            let bestSyncPoint = syncPoints[0].syncPoint;\n            let bestDistance = Math.abs(syncPoints[0].syncPoint[target.key] - target.value);\n            let bestStrategy = syncPoints[0].strategy;\n            for (let i = 1; i < syncPoints.length; i++) {\n                const newDistance = Math.abs(syncPoints[i].syncPoint[target.key] - target.value);\n                if (newDistance < bestDistance) {\n                    bestDistance = newDistance;\n                    bestSyncPoint = syncPoints[i].syncPoint;\n                    bestStrategy = syncPoints[i].strategy;\n                }\n            }\n            this.logger_(`syncPoint for [${target.key}: ${target.value}] chosen with strategy` + ` [${bestStrategy}]: [time:${bestSyncPoint.time},` + ` segmentIndex:${bestSyncPoint.segmentIndex}` + (typeof bestSyncPoint.partIndex === 'number' ? `,partIndex:${bestSyncPoint.partIndex}` : '') + ']');\n            return bestSyncPoint;\n        }\n        /**\n         * Save any meta-data present on the segments when segments leave\n         * the live window to the playlist to allow for synchronization at the\n         * playlist level later.\n         *\n         * @param {Playlist} oldPlaylist - The previous active playlist\n         * @param {Playlist} newPlaylist - The updated and most current playlist\n         */\n\n        saveExpiredSegmentInfo(oldPlaylist, newPlaylist) {\n            const mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence; // Ignore large media sequence gaps\n\n            if (mediaSequenceDiff > MAX_MEDIA_SEQUENCE_DIFF_FOR_SYNC) {\n                videojs.log.warn(`Not saving expired segment info. Media sequence gap ${mediaSequenceDiff} is too large.`);\n                return;\n            } // When a segment expires from the playlist and it has a start time\n            // save that information as a possible sync-point reference in future\n\n            for (let i = mediaSequenceDiff - 1; i >= 0; i--) {\n                const lastRemovedSegment = oldPlaylist.segments[i];\n                if (lastRemovedSegment && typeof lastRemovedSegment.start !== 'undefined') {\n                    newPlaylist.syncInfo = {\n                        mediaSequence: oldPlaylist.mediaSequence + i,\n                        time: lastRemovedSegment.start\n                    };\n                    this.logger_(`playlist refresh sync: [time:${newPlaylist.syncInfo.time},` + ` mediaSequence: ${newPlaylist.syncInfo.mediaSequence}]`);\n                    this.trigger('syncinfoupdate');\n                    break;\n                }\n            }\n        }\n        /**\n         * Save the mapping from playlist's ProgramDateTime to display. This should only happen\n         * before segments start to load.\n         *\n         * @param {Playlist} playlist - The currently active playlist\n         */\n\n        setDateTimeMappingForStart(playlist) {\n            // It's possible for the playlist to be updated before playback starts, meaning time\n            // zero is not yet set. If, during these playlist refreshes, a discontinuity is\n            // crossed, then the old time zero mapping (for the prior timeline) would be retained\n            // unless the mappings are cleared.\n            this.timelineToDatetimeMappings = {};\n            if (playlist.segments && playlist.segments.length && playlist.segments[0].dateTimeObject) {\n                const firstSegment = playlist.segments[0];\n                const playlistTimestamp = firstSegment.dateTimeObject.getTime() / 1000;\n                this.timelineToDatetimeMappings[firstSegment.timeline] = -playlistTimestamp;\n            }\n        }\n        /**\n         * Calculates and saves timeline mappings, playlist sync info, and segment timing values\n         * based on the latest timing information.\n         *\n         * @param {Object} options\n         *        Options object\n         * @param {SegmentInfo} options.segmentInfo\n         *        The current active request information\n         * @param {boolean} options.shouldSaveTimelineMapping\n         *        If there's a timeline change, determines if the timeline mapping should be\n         *        saved for timeline mapping and program date time mappings.\n         */\n\n        saveSegmentTimingInfo({\n                                  segmentInfo,\n                                  shouldSaveTimelineMapping\n                              }) {\n            const didCalculateSegmentTimeMapping = this.calculateSegmentTimeMapping_(segmentInfo, segmentInfo.timingInfo, shouldSaveTimelineMapping);\n            const segment = segmentInfo.segment;\n            if (didCalculateSegmentTimeMapping) {\n                this.saveDiscontinuitySyncInfo_(segmentInfo); // If the playlist does not have sync information yet, record that information\n                // now with segment timing information\n\n                if (!segmentInfo.playlist.syncInfo) {\n                    segmentInfo.playlist.syncInfo = {\n                        mediaSequence: segmentInfo.playlist.mediaSequence + segmentInfo.mediaIndex,\n                        time: segment.start\n                    };\n                }\n            }\n            const dateTime = segment.dateTimeObject;\n            if (segment.discontinuity && shouldSaveTimelineMapping && dateTime) {\n                this.timelineToDatetimeMappings[segment.timeline] = -(dateTime.getTime() / 1000);\n            }\n        }\n        timestampOffsetForTimeline(timeline) {\n            if (typeof this.timelines[timeline] === 'undefined') {\n                return null;\n            }\n            return this.timelines[timeline].time;\n        }\n        mappingForTimeline(timeline) {\n            if (typeof this.timelines[timeline] === 'undefined') {\n                return null;\n            }\n            return this.timelines[timeline].mapping;\n        }\n        /**\n         * Use the \"media time\" for a segment to generate a mapping to \"display time\" and\n         * save that display time to the segment.\n         *\n         * @private\n         * @param {SegmentInfo} segmentInfo\n         *        The current active request information\n         * @param {Object} timingInfo\n         *        The start and end time of the current segment in \"media time\"\n         * @param {boolean} shouldSaveTimelineMapping\n         *        If there's a timeline change, determines if the timeline mapping should be\n         *        saved in timelines.\n         * @return {boolean}\n         *          Returns false if segment time mapping could not be calculated\n         */\n\n        calculateSegmentTimeMapping_(segmentInfo, timingInfo, shouldSaveTimelineMapping) {\n            // TODO: remove side effects\n            const segment = segmentInfo.segment;\n            const part = segmentInfo.part;\n            let mappingObj = this.timelines[segmentInfo.timeline];\n            let start;\n            let end;\n            if (typeof segmentInfo.timestampOffset === 'number') {\n                mappingObj = {\n                    time: segmentInfo.startOfSegment,\n                    mapping: segmentInfo.startOfSegment - timingInfo.start\n                };\n                if (shouldSaveTimelineMapping) {\n                    this.timelines[segmentInfo.timeline] = mappingObj;\n                    this.trigger('timestampoffset');\n                    this.logger_(`time mapping for timeline ${segmentInfo.timeline}: ` + `[time: ${mappingObj.time}] [mapping: ${mappingObj.mapping}]`);\n                }\n                start = segmentInfo.startOfSegment;\n                end = timingInfo.end + mappingObj.mapping;\n            } else if (mappingObj) {\n                start = timingInfo.start + mappingObj.mapping;\n                end = timingInfo.end + mappingObj.mapping;\n            } else {\n                return false;\n            }\n            if (part) {\n                part.start = start;\n                part.end = end;\n            } // If we don't have a segment start yet or the start value we got\n            // is less than our current segment.start value, save a new start value.\n            // We have to do this because parts will have segment timing info saved\n            // multiple times and we want segment start to be the earliest part start\n            // value for that segment.\n\n            if (!segment.start || start < segment.start) {\n                segment.start = start;\n            }\n            segment.end = end;\n            return true;\n        }\n        /**\n         * Each time we have discontinuity in the playlist, attempt to calculate the location\n         * in display of the start of the discontinuity and save that. We also save an accuracy\n         * value so that we save values with the most accuracy (closest to 0.)\n         *\n         * @private\n         * @param {SegmentInfo} segmentInfo - The current active request information\n         */\n\n        saveDiscontinuitySyncInfo_(segmentInfo) {\n            const playlist = segmentInfo.playlist;\n            const segment = segmentInfo.segment; // If the current segment is a discontinuity then we know exactly where\n            // the start of the range and it's accuracy is 0 (greater accuracy values\n            // mean more approximation)\n\n            if (segment.discontinuity) {\n                this.discontinuities[segment.timeline] = {\n                    time: segment.start,\n                    accuracy: 0\n                };\n            } else if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) {\n                // Search for future discontinuities that we can provide better timing\n                // information for and save that information for sync purposes\n                for (let i = 0; i < playlist.discontinuityStarts.length; i++) {\n                    const segmentIndex = playlist.discontinuityStarts[i];\n                    const discontinuity = playlist.discontinuitySequence + i + 1;\n                    const mediaIndexDiff = segmentIndex - segmentInfo.mediaIndex;\n                    const accuracy = Math.abs(mediaIndexDiff);\n                    if (!this.discontinuities[discontinuity] || this.discontinuities[discontinuity].accuracy > accuracy) {\n                        let time;\n                        if (mediaIndexDiff < 0) {\n                            time = segment.start - sumDurations({\n                                defaultDuration: playlist.targetDuration,\n                                durationList: playlist.segments,\n                                startIndex: segmentInfo.mediaIndex,\n                                endIndex: segmentIndex\n                            });\n                        } else {\n                            time = segment.end + sumDurations({\n                                defaultDuration: playlist.targetDuration,\n                                durationList: playlist.segments,\n                                startIndex: segmentInfo.mediaIndex + 1,\n                                endIndex: segmentIndex\n                            });\n                        }\n                        this.discontinuities[discontinuity] = {\n                            time,\n                            accuracy\n                        };\n                    }\n                }\n            }\n        }\n        dispose() {\n            this.trigger('dispose');\n            this.off();\n        }\n    }\n\n    /**\n     * The TimelineChangeController acts as a source for segment loaders to listen for and\n     * keep track of latest and pending timeline changes. This is useful to ensure proper\n     * sync, as each loader may need to make a consideration for what timeline the other\n     * loader is on before making changes which could impact the other loader's media.\n     *\n     * @class TimelineChangeController\n     * @extends videojs.EventTarget\n     */\n\n    class TimelineChangeController extends videojs.EventTarget {\n        constructor() {\n            super();\n            this.pendingTimelineChanges_ = {};\n            this.lastTimelineChanges_ = {};\n        }\n        clearPendingTimelineChange(type) {\n            this.pendingTimelineChanges_[type] = null;\n            this.trigger('pendingtimelinechange');\n        }\n        pendingTimelineChange({\n                                  type,\n                                  from,\n                                  to\n                              }) {\n            if (typeof from === 'number' && typeof to === 'number') {\n                this.pendingTimelineChanges_[type] = {\n                    type,\n                    from,\n                    to\n                };\n                this.trigger('pendingtimelinechange');\n            }\n            return this.pendingTimelineChanges_[type];\n        }\n        lastTimelineChange({\n                               type,\n                               from,\n                               to\n                           }) {\n            if (typeof from === 'number' && typeof to === 'number') {\n                this.lastTimelineChanges_[type] = {\n                    type,\n                    from,\n                    to\n                };\n                delete this.pendingTimelineChanges_[type];\n                this.trigger('timelinechange');\n            }\n            return this.lastTimelineChanges_[type];\n        }\n        dispose() {\n            this.trigger('dispose');\n            this.pendingTimelineChanges_ = {};\n            this.lastTimelineChanges_ = {};\n            this.off();\n        }\n    }\n\n    /* rollup-plugin-worker-factory start for worker!/Users/ddashkevich/projects/http-streaming/src/decrypter-worker.js */\n    const workerCode = transform(getWorkerString(function () {\n        /**\n         * @file stream.js\n         */\n\n        /**\n         * A lightweight readable stream implemention that handles event dispatching.\n         *\n         * @class Stream\n         */\n\n        var Stream = /*#__PURE__*/function () {\n            function Stream() {\n                this.listeners = {};\n            }\n            /**\n             * Add a listener for a specified event type.\n             *\n             * @param {string} type the event name\n             * @param {Function} listener the callback to be invoked when an event of\n             * the specified type occurs\n             */\n\n            var _proto = Stream.prototype;\n            _proto.on = function on(type, listener) {\n                if (!this.listeners[type]) {\n                    this.listeners[type] = [];\n                }\n                this.listeners[type].push(listener);\n            }\n            /**\n             * Remove a listener for a specified event type.\n             *\n             * @param {string} type the event name\n             * @param {Function} listener  a function previously registered for this\n             * type of event through `on`\n             * @return {boolean} if we could turn it off or not\n             */;\n\n            _proto.off = function off(type, listener) {\n                if (!this.listeners[type]) {\n                    return false;\n                }\n                var index = this.listeners[type].indexOf(listener); // TODO: which is better?\n                // In Video.js we slice listener functions\n                // on trigger so that it does not mess up the order\n                // while we loop through.\n                //\n                // Here we slice on off so that the loop in trigger\n                // can continue using it's old reference to loop without\n                // messing up the order.\n\n                this.listeners[type] = this.listeners[type].slice(0);\n                this.listeners[type].splice(index, 1);\n                return index > -1;\n            }\n            /**\n             * Trigger an event of the specified type on this stream. Any additional\n             * arguments to this function are passed as parameters to event listeners.\n             *\n             * @param {string} type the event name\n             */;\n\n            _proto.trigger = function trigger(type) {\n                var callbacks = this.listeners[type];\n                if (!callbacks) {\n                    return;\n                } // Slicing the arguments on every invocation of this method\n                // can add a significant amount of overhead. Avoid the\n                // intermediate object creation for the common case of a\n                // single callback argument\n\n                if (arguments.length === 2) {\n                    var length = callbacks.length;\n                    for (var i = 0; i < length; ++i) {\n                        callbacks[i].call(this, arguments[1]);\n                    }\n                } else {\n                    var args = Array.prototype.slice.call(arguments, 1);\n                    var _length = callbacks.length;\n                    for (var _i = 0; _i < _length; ++_i) {\n                        callbacks[_i].apply(this, args);\n                    }\n                }\n            }\n            /**\n             * Destroys the stream and cleans up.\n             */;\n\n            _proto.dispose = function dispose() {\n                this.listeners = {};\n            }\n            /**\n             * Forwards all `data` events on this stream to the destination stream. The\n             * destination stream should provide a method `push` to receive the data\n             * events as they arrive.\n             *\n             * @param {Stream} destination the stream that will receive all `data` events\n             * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n             */;\n\n            _proto.pipe = function pipe(destination) {\n                this.on('data', function (data) {\n                    destination.push(data);\n                });\n            };\n            return Stream;\n        }();\n        /*! @name pkcs7 @version 1.0.4 @license Apache-2.0 */\n\n        /**\n         * Returns the subarray of a Uint8Array without PKCS#7 padding.\n         *\n         * @param padded {Uint8Array} unencrypted bytes that have been padded\n         * @return {Uint8Array} the unpadded bytes\n         * @see http://tools.ietf.org/html/rfc5652\n         */\n\n        function unpad(padded) {\n            return padded.subarray(0, padded.byteLength - padded[padded.byteLength - 1]);\n        }\n        /*! @name aes-decrypter @version 4.0.1 @license Apache-2.0 */\n\n        /**\n         * @file aes.js\n         *\n         * This file contains an adaptation of the AES decryption algorithm\n         * from the Standford Javascript Cryptography Library. That work is\n         * covered by the following copyright and permissions notice:\n         *\n         * Copyright 2009-2010 Emily Stark, Mike Hamburg, Dan Boneh.\n         * All rights reserved.\n         *\n         * Redistribution and use in source and binary forms, with or without\n         * modification, are permitted provided that the following conditions are\n         * met:\n         *\n         * 1. Redistributions of source code must retain the above copyright\n         *    notice, this list of conditions and the following disclaimer.\n         *\n         * 2. Redistributions in binary form must reproduce the above\n         *    copyright notice, this list of conditions and the following\n         *    disclaimer in the documentation and/or other materials provided\n         *    with the distribution.\n         *\n         * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR\n         * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n         * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\n         * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR CONTRIBUTORS BE\n         * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\n         * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\n         * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR\n         * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,\n         * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE\n         * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN\n         * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n         *\n         * The views and conclusions contained in the software and documentation\n         * are those of the authors and should not be interpreted as representing\n         * official policies, either expressed or implied, of the authors.\n         */\n\n        /**\n         * Expand the S-box tables.\n         *\n         * @private\n         */\n\n        const precompute = function () {\n            const tables = [[[], [], [], [], []], [[], [], [], [], []]];\n            const encTable = tables[0];\n            const decTable = tables[1];\n            const sbox = encTable[4];\n            const sboxInv = decTable[4];\n            let i;\n            let x;\n            let xInv;\n            const d = [];\n            const th = [];\n            let x2;\n            let x4;\n            let x8;\n            let s;\n            let tEnc;\n            let tDec; // Compute double and third tables\n\n            for (i = 0; i < 256; i++) {\n                th[(d[i] = i << 1 ^ (i >> 7) * 283) ^ i] = i;\n            }\n            for (x = xInv = 0; !sbox[x]; x ^= x2 || 1, xInv = th[xInv] || 1) {\n                // Compute sbox\n                s = xInv ^ xInv << 1 ^ xInv << 2 ^ xInv << 3 ^ xInv << 4;\n                s = s >> 8 ^ s & 255 ^ 99;\n                sbox[x] = s;\n                sboxInv[s] = x; // Compute MixColumns\n\n                x8 = d[x4 = d[x2 = d[x]]];\n                tDec = x8 * 0x1010101 ^ x4 * 0x10001 ^ x2 * 0x101 ^ x * 0x1010100;\n                tEnc = d[s] * 0x101 ^ s * 0x1010100;\n                for (i = 0; i < 4; i++) {\n                    encTable[i][x] = tEnc = tEnc << 24 ^ tEnc >>> 8;\n                    decTable[i][s] = tDec = tDec << 24 ^ tDec >>> 8;\n                }\n            } // Compactify. Considerable speedup on Firefox.\n\n            for (i = 0; i < 5; i++) {\n                encTable[i] = encTable[i].slice(0);\n                decTable[i] = decTable[i].slice(0);\n            }\n            return tables;\n        };\n        let aesTables = null;\n        /**\n         * Schedule out an AES key for both encryption and decryption. This\n         * is a low-level class. Use a cipher mode to do bulk encryption.\n         *\n         * @class AES\n         * @param key {Array} The key as an array of 4, 6 or 8 words.\n         */\n\n        class AES {\n            constructor(key) {\n                /**\n                 * The expanded S-box and inverse S-box tables. These will be computed\n                 * on the client so that we don't have to send them down the wire.\n                 *\n                 * There are two tables, _tables[0] is for encryption and\n                 * _tables[1] is for decryption.\n                 *\n                 * The first 4 sub-tables are the expanded S-box with MixColumns. The\n                 * last (_tables[01][4]) is the S-box itself.\n                 *\n                 * @private\n                 */\n                // if we have yet to precompute the S-box tables\n                // do so now\n                if (!aesTables) {\n                    aesTables = precompute();\n                } // then make a copy of that object for use\n\n                this._tables = [[aesTables[0][0].slice(), aesTables[0][1].slice(), aesTables[0][2].slice(), aesTables[0][3].slice(), aesTables[0][4].slice()], [aesTables[1][0].slice(), aesTables[1][1].slice(), aesTables[1][2].slice(), aesTables[1][3].slice(), aesTables[1][4].slice()]];\n                let i;\n                let j;\n                let tmp;\n                const sbox = this._tables[0][4];\n                const decTable = this._tables[1];\n                const keyLen = key.length;\n                let rcon = 1;\n                if (keyLen !== 4 && keyLen !== 6 && keyLen !== 8) {\n                    throw new Error('Invalid aes key size');\n                }\n                const encKey = key.slice(0);\n                const decKey = [];\n                this._key = [encKey, decKey]; // schedule encryption keys\n\n                for (i = keyLen; i < 4 * keyLen + 28; i++) {\n                    tmp = encKey[i - 1]; // apply sbox\n\n                    if (i % keyLen === 0 || keyLen === 8 && i % keyLen === 4) {\n                        tmp = sbox[tmp >>> 24] << 24 ^ sbox[tmp >> 16 & 255] << 16 ^ sbox[tmp >> 8 & 255] << 8 ^ sbox[tmp & 255]; // shift rows and add rcon\n\n                        if (i % keyLen === 0) {\n                            tmp = tmp << 8 ^ tmp >>> 24 ^ rcon << 24;\n                            rcon = rcon << 1 ^ (rcon >> 7) * 283;\n                        }\n                    }\n                    encKey[i] = encKey[i - keyLen] ^ tmp;\n                } // schedule decryption keys\n\n                for (j = 0; i; j++, i--) {\n                    tmp = encKey[j & 3 ? i : i - 4];\n                    if (i <= 4 || j < 4) {\n                        decKey[j] = tmp;\n                    } else {\n                        decKey[j] = decTable[0][sbox[tmp >>> 24]] ^ decTable[1][sbox[tmp >> 16 & 255]] ^ decTable[2][sbox[tmp >> 8 & 255]] ^ decTable[3][sbox[tmp & 255]];\n                    }\n                }\n            }\n            /**\n             * Decrypt 16 bytes, specified as four 32-bit words.\n             *\n             * @param {number} encrypted0 the first word to decrypt\n             * @param {number} encrypted1 the second word to decrypt\n             * @param {number} encrypted2 the third word to decrypt\n             * @param {number} encrypted3 the fourth word to decrypt\n             * @param {Int32Array} out the array to write the decrypted words\n             * into\n             * @param {number} offset the offset into the output array to start\n             * writing results\n             * @return {Array} The plaintext.\n             */\n\n            decrypt(encrypted0, encrypted1, encrypted2, encrypted3, out, offset) {\n                const key = this._key[1]; // state variables a,b,c,d are loaded with pre-whitened data\n\n                let a = encrypted0 ^ key[0];\n                let b = encrypted3 ^ key[1];\n                let c = encrypted2 ^ key[2];\n                let d = encrypted1 ^ key[3];\n                let a2;\n                let b2;\n                let c2; // key.length === 2 ?\n\n                const nInnerRounds = key.length / 4 - 2;\n                let i;\n                let kIndex = 4;\n                const table = this._tables[1]; // load up the tables\n\n                const table0 = table[0];\n                const table1 = table[1];\n                const table2 = table[2];\n                const table3 = table[3];\n                const sbox = table[4]; // Inner rounds. Cribbed from OpenSSL.\n\n                for (i = 0; i < nInnerRounds; i++) {\n                    a2 = table0[a >>> 24] ^ table1[b >> 16 & 255] ^ table2[c >> 8 & 255] ^ table3[d & 255] ^ key[kIndex];\n                    b2 = table0[b >>> 24] ^ table1[c >> 16 & 255] ^ table2[d >> 8 & 255] ^ table3[a & 255] ^ key[kIndex + 1];\n                    c2 = table0[c >>> 24] ^ table1[d >> 16 & 255] ^ table2[a >> 8 & 255] ^ table3[b & 255] ^ key[kIndex + 2];\n                    d = table0[d >>> 24] ^ table1[a >> 16 & 255] ^ table2[b >> 8 & 255] ^ table3[c & 255] ^ key[kIndex + 3];\n                    kIndex += 4;\n                    a = a2;\n                    b = b2;\n                    c = c2;\n                } // Last round.\n\n                for (i = 0; i < 4; i++) {\n                    out[(3 & -i) + offset] = sbox[a >>> 24] << 24 ^ sbox[b >> 16 & 255] << 16 ^ sbox[c >> 8 & 255] << 8 ^ sbox[d & 255] ^ key[kIndex++];\n                    a2 = a;\n                    a = b;\n                    b = c;\n                    c = d;\n                    d = a2;\n                }\n            }\n        }\n        /**\n         * @file async-stream.js\n         */\n\n        /**\n         * A wrapper around the Stream class to use setTimeout\n         * and run stream \"jobs\" Asynchronously\n         *\n         * @class AsyncStream\n         * @extends Stream\n         */\n\n        class AsyncStream extends Stream {\n            constructor() {\n                super(Stream);\n                this.jobs = [];\n                this.delay = 1;\n                this.timeout_ = null;\n            }\n            /**\n             * process an async job\n             *\n             * @private\n             */\n\n            processJob_() {\n                this.jobs.shift()();\n                if (this.jobs.length) {\n                    this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);\n                } else {\n                    this.timeout_ = null;\n                }\n            }\n            /**\n             * push a job into the stream\n             *\n             * @param {Function} job the job to push into the stream\n             */\n\n            push(job) {\n                this.jobs.push(job);\n                if (!this.timeout_) {\n                    this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);\n                }\n            }\n        }\n        /**\n         * @file decrypter.js\n         *\n         * An asynchronous implementation of AES-128 CBC decryption with\n         * PKCS#7 padding.\n         */\n\n        /**\n         * Convert network-order (big-endian) bytes into their little-endian\n         * representation.\n         */\n\n        const ntoh = function (word) {\n            return word << 24 | (word & 0xff00) << 8 | (word & 0xff0000) >> 8 | word >>> 24;\n        };\n        /**\n         * Decrypt bytes using AES-128 with CBC and PKCS#7 padding.\n         *\n         * @param {Uint8Array} encrypted the encrypted bytes\n         * @param {Uint32Array} key the bytes of the decryption key\n         * @param {Uint32Array} initVector the initialization vector (IV) to\n         * use for the first round of CBC.\n         * @return {Uint8Array} the decrypted bytes\n         *\n         * @see http://en.wikipedia.org/wiki/Advanced_Encryption_Standard\n         * @see http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Cipher_Block_Chaining_.28CBC.29\n         * @see https://tools.ietf.org/html/rfc2315\n         */\n\n        const decrypt = function (encrypted, key, initVector) {\n            // word-level access to the encrypted bytes\n            const encrypted32 = new Int32Array(encrypted.buffer, encrypted.byteOffset, encrypted.byteLength >> 2);\n            const decipher = new AES(Array.prototype.slice.call(key)); // byte and word-level access for the decrypted output\n\n            const decrypted = new Uint8Array(encrypted.byteLength);\n            const decrypted32 = new Int32Array(decrypted.buffer); // temporary variables for working with the IV, encrypted, and\n            // decrypted data\n\n            let init0;\n            let init1;\n            let init2;\n            let init3;\n            let encrypted0;\n            let encrypted1;\n            let encrypted2;\n            let encrypted3; // iteration variable\n\n            let wordIx; // pull out the words of the IV to ensure we don't modify the\n            // passed-in reference and easier access\n\n            init0 = initVector[0];\n            init1 = initVector[1];\n            init2 = initVector[2];\n            init3 = initVector[3]; // decrypt four word sequences, applying cipher-block chaining (CBC)\n            // to each decrypted block\n\n            for (wordIx = 0; wordIx < encrypted32.length; wordIx += 4) {\n                // convert big-endian (network order) words into little-endian\n                // (javascript order)\n                encrypted0 = ntoh(encrypted32[wordIx]);\n                encrypted1 = ntoh(encrypted32[wordIx + 1]);\n                encrypted2 = ntoh(encrypted32[wordIx + 2]);\n                encrypted3 = ntoh(encrypted32[wordIx + 3]); // decrypt the block\n\n                decipher.decrypt(encrypted0, encrypted1, encrypted2, encrypted3, decrypted32, wordIx); // XOR with the IV, and restore network byte-order to obtain the\n                // plaintext\n\n                decrypted32[wordIx] = ntoh(decrypted32[wordIx] ^ init0);\n                decrypted32[wordIx + 1] = ntoh(decrypted32[wordIx + 1] ^ init1);\n                decrypted32[wordIx + 2] = ntoh(decrypted32[wordIx + 2] ^ init2);\n                decrypted32[wordIx + 3] = ntoh(decrypted32[wordIx + 3] ^ init3); // setup the IV for the next round\n\n                init0 = encrypted0;\n                init1 = encrypted1;\n                init2 = encrypted2;\n                init3 = encrypted3;\n            }\n            return decrypted;\n        };\n        /**\n         * The `Decrypter` class that manages decryption of AES\n         * data through `AsyncStream` objects and the `decrypt`\n         * function\n         *\n         * @param {Uint8Array} encrypted the encrypted bytes\n         * @param {Uint32Array} key the bytes of the decryption key\n         * @param {Uint32Array} initVector the initialization vector (IV) to\n         * @param {Function} done the function to run when done\n         * @class Decrypter\n         */\n\n        class Decrypter {\n            constructor(encrypted, key, initVector, done) {\n                const step = Decrypter.STEP;\n                const encrypted32 = new Int32Array(encrypted.buffer);\n                const decrypted = new Uint8Array(encrypted.byteLength);\n                let i = 0;\n                this.asyncStream_ = new AsyncStream(); // split up the encryption job and do the individual chunks asynchronously\n\n                this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));\n                for (i = step; i < encrypted32.length; i += step) {\n                    initVector = new Uint32Array([ntoh(encrypted32[i - 4]), ntoh(encrypted32[i - 3]), ntoh(encrypted32[i - 2]), ntoh(encrypted32[i - 1])]);\n                    this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));\n                } // invoke the done() callback when everything is finished\n\n                this.asyncStream_.push(function () {\n                    // remove pkcs#7 padding from the decrypted bytes\n                    done(null, unpad(decrypted));\n                });\n            }\n            /**\n             * a getter for step the maximum number of bytes to process at one time\n             *\n             * @return {number} the value of step 32000\n             */\n\n            static get STEP() {\n                // 4 * 8000;\n                return 32000;\n            }\n            /**\n             * @private\n             */\n\n            decryptChunk_(encrypted, key, initVector, decrypted) {\n                return function () {\n                    const bytes = decrypt(encrypted, key, initVector);\n                    decrypted.set(bytes, encrypted.byteOffset);\n                };\n            }\n        }\n        var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};\n        var win;\n        if (typeof window !== \"undefined\") {\n            win = window;\n        } else if (typeof commonjsGlobal !== \"undefined\") {\n            win = commonjsGlobal;\n        } else if (typeof self !== \"undefined\") {\n            win = self;\n        } else {\n            win = {};\n        }\n        var window_1 = win;\n        var isArrayBufferView = function isArrayBufferView(obj) {\n            if (ArrayBuffer.isView === 'function') {\n                return ArrayBuffer.isView(obj);\n            }\n            return obj && obj.buffer instanceof ArrayBuffer;\n        };\n        var BigInt = window_1.BigInt || Number;\n        [BigInt('0x1'), BigInt('0x100'), BigInt('0x10000'), BigInt('0x1000000'), BigInt('0x100000000'), BigInt('0x10000000000'), BigInt('0x1000000000000'), BigInt('0x100000000000000'), BigInt('0x10000000000000000')];\n        (function () {\n            var a = new Uint16Array([0xFFCC]);\n            var b = new Uint8Array(a.buffer, a.byteOffset, a.byteLength);\n            if (b[0] === 0xFF) {\n                return 'big';\n            }\n            if (b[0] === 0xCC) {\n                return 'little';\n            }\n            return 'unknown';\n        })();\n        /**\n         * Creates an object for sending to a web worker modifying properties that are TypedArrays\n         * into a new object with seperated properties for the buffer, byteOffset, and byteLength.\n         *\n         * @param {Object} message\n         *        Object of properties and values to send to the web worker\n         * @return {Object}\n         *         Modified message with TypedArray values expanded\n         * @function createTransferableMessage\n         */\n\n        const createTransferableMessage = function (message) {\n            const transferable = {};\n            Object.keys(message).forEach(key => {\n                const value = message[key];\n                if (isArrayBufferView(value)) {\n                    transferable[key] = {\n                        bytes: value.buffer,\n                        byteOffset: value.byteOffset,\n                        byteLength: value.byteLength\n                    };\n                } else {\n                    transferable[key] = value;\n                }\n            });\n            return transferable;\n        };\n        /* global self */\n\n        /**\n         * Our web worker interface so that things can talk to aes-decrypter\n         * that will be running in a web worker. the scope is passed to this by\n         * webworkify.\n         */\n\n        self.onmessage = function (event) {\n            const data = event.data;\n            const encrypted = new Uint8Array(data.encrypted.bytes, data.encrypted.byteOffset, data.encrypted.byteLength);\n            const key = new Uint32Array(data.key.bytes, data.key.byteOffset, data.key.byteLength / 4);\n            const iv = new Uint32Array(data.iv.bytes, data.iv.byteOffset, data.iv.byteLength / 4);\n            /* eslint-disable no-new, handle-callback-err */\n\n            new Decrypter(encrypted, key, iv, function (err, bytes) {\n                self.postMessage(createTransferableMessage({\n                    source: data.source,\n                    decrypted: bytes\n                }), [bytes.buffer]);\n            });\n            /* eslint-enable */\n        };\n    }));\n\n    var Decrypter = factory(workerCode);\n    /* rollup-plugin-worker-factory end for worker!/Users/ddashkevich/projects/http-streaming/src/decrypter-worker.js */\n\n    /**\n     * Convert the properties of an HLS track into an audioTrackKind.\n     *\n     * @private\n     */\n\n    const audioTrackKind_ = properties => {\n        let kind = properties.default ? 'main' : 'alternative';\n        if (properties.characteristics && properties.characteristics.indexOf('public.accessibility.describes-video') >= 0) {\n            kind = 'main-desc';\n        }\n        return kind;\n    };\n    /**\n     * Pause provided segment loader and playlist loader if active\n     *\n     * @param {SegmentLoader} segmentLoader\n     *        SegmentLoader to pause\n     * @param {Object} mediaType\n     *        Active media type\n     * @function stopLoaders\n     */\n\n    const stopLoaders = (segmentLoader, mediaType) => {\n        segmentLoader.abort();\n        segmentLoader.pause();\n        if (mediaType && mediaType.activePlaylistLoader) {\n            mediaType.activePlaylistLoader.pause();\n            mediaType.activePlaylistLoader = null;\n        }\n    };\n    /**\n     * Start loading provided segment loader and playlist loader\n     *\n     * @param {PlaylistLoader} playlistLoader\n     *        PlaylistLoader to start loading\n     * @param {Object} mediaType\n     *        Active media type\n     * @function startLoaders\n     */\n\n    const startLoaders = (playlistLoader, mediaType) => {\n        // Segment loader will be started after `loadedmetadata` or `loadedplaylist` from the\n        // playlist loader\n        mediaType.activePlaylistLoader = playlistLoader;\n        playlistLoader.load();\n    };\n    /**\n     * Returns a function to be called when the media group changes. It performs a\n     * non-destructive (preserve the buffer) resync of the SegmentLoader. This is because a\n     * change of group is merely a rendition switch of the same content at another encoding,\n     * rather than a change of content, such as switching audio from English to Spanish.\n     *\n     * @param {string} type\n     *        MediaGroup type\n     * @param {Object} settings\n     *        Object containing required information for media groups\n     * @return {Function}\n     *         Handler for a non-destructive resync of SegmentLoader when the active media\n     *         group changes.\n     * @function onGroupChanged\n     */\n\n    const onGroupChanged = (type, settings) => () => {\n        const {\n            segmentLoaders: {\n                [type]: segmentLoader,\n                main: mainSegmentLoader\n            },\n            mediaTypes: {\n                [type]: mediaType\n            }\n        } = settings;\n        const activeTrack = mediaType.activeTrack();\n        const activeGroup = mediaType.getActiveGroup();\n        const previousActiveLoader = mediaType.activePlaylistLoader;\n        const lastGroup = mediaType.lastGroup_; // the group did not change do nothing\n\n        if (activeGroup && lastGroup && activeGroup.id === lastGroup.id) {\n            return;\n        }\n        mediaType.lastGroup_ = activeGroup;\n        mediaType.lastTrack_ = activeTrack;\n        stopLoaders(segmentLoader, mediaType);\n        if (!activeGroup || activeGroup.isMainPlaylist) {\n            // there is no group active or active group is a main playlist and won't change\n            return;\n        }\n        if (!activeGroup.playlistLoader) {\n            if (previousActiveLoader) {\n                // The previous group had a playlist loader but the new active group does not\n                // this means we are switching from demuxed to muxed audio. In this case we want to\n                // do a destructive reset of the main segment loader and not restart the audio\n                // loaders.\n                mainSegmentLoader.resetEverything();\n            }\n            return;\n        } // Non-destructive resync\n\n        segmentLoader.resyncLoader();\n        startLoaders(activeGroup.playlistLoader, mediaType);\n    };\n    const onGroupChanging = (type, settings) => () => {\n        const {\n            segmentLoaders: {\n                [type]: segmentLoader\n            },\n            mediaTypes: {\n                [type]: mediaType\n            }\n        } = settings;\n        mediaType.lastGroup_ = null;\n        segmentLoader.abort();\n        segmentLoader.pause();\n    };\n    /**\n     * Returns a function to be called when the media track changes. It performs a\n     * destructive reset of the SegmentLoader to ensure we start loading as close to\n     * currentTime as possible.\n     *\n     * @param {string} type\n     *        MediaGroup type\n     * @param {Object} settings\n     *        Object containing required information for media groups\n     * @return {Function}\n     *         Handler for a destructive reset of SegmentLoader when the active media\n     *         track changes.\n     * @function onTrackChanged\n     */\n\n    const onTrackChanged = (type, settings) => () => {\n        const {\n            mainPlaylistLoader,\n            segmentLoaders: {\n                [type]: segmentLoader,\n                main: mainSegmentLoader\n            },\n            mediaTypes: {\n                [type]: mediaType\n            }\n        } = settings;\n        const activeTrack = mediaType.activeTrack();\n        const activeGroup = mediaType.getActiveGroup();\n        const previousActiveLoader = mediaType.activePlaylistLoader;\n        const lastTrack = mediaType.lastTrack_; // track did not change, do nothing\n\n        if (lastTrack && activeTrack && lastTrack.id === activeTrack.id) {\n            return;\n        }\n        mediaType.lastGroup_ = activeGroup;\n        mediaType.lastTrack_ = activeTrack;\n        stopLoaders(segmentLoader, mediaType);\n        if (!activeGroup) {\n            // there is no group active so we do not want to restart loaders\n            return;\n        }\n        if (activeGroup.isMainPlaylist) {\n            // track did not change, do nothing\n            if (!activeTrack || !lastTrack || activeTrack.id === lastTrack.id) {\n                return;\n            }\n            const pc = settings.vhs.playlistController_;\n            const newPlaylist = pc.selectPlaylist(); // media will not change do nothing\n\n            if (pc.media() === newPlaylist) {\n                return;\n            }\n            mediaType.logger_(`track change. Switching main audio from ${lastTrack.id} to ${activeTrack.id}`);\n            mainPlaylistLoader.pause();\n            mainSegmentLoader.resetEverything();\n            pc.fastQualityChange_(newPlaylist);\n            return;\n        }\n        if (type === 'AUDIO') {\n            if (!activeGroup.playlistLoader) {\n                // when switching from demuxed audio/video to muxed audio/video (noted by no\n                // playlist loader for the audio group), we want to do a destructive reset of the\n                // main segment loader and not restart the audio loaders\n                mainSegmentLoader.setAudio(true); // don't have to worry about disabling the audio of the audio segment loader since\n                // it should be stopped\n\n                mainSegmentLoader.resetEverything();\n                return;\n            } // although the segment loader is an audio segment loader, call the setAudio\n            // function to ensure it is prepared to re-append the init segment (or handle other\n            // config changes)\n\n            segmentLoader.setAudio(true);\n            mainSegmentLoader.setAudio(false);\n        }\n        if (previousActiveLoader === activeGroup.playlistLoader) {\n            // Nothing has actually changed. This can happen because track change events can fire\n            // multiple times for a \"single\" change. One for enabling the new active track, and\n            // one for disabling the track that was active\n            startLoaders(activeGroup.playlistLoader, mediaType);\n            return;\n        }\n        if (segmentLoader.track) {\n            // For WebVTT, set the new text track in the segmentloader\n            segmentLoader.track(activeTrack);\n        } // destructive reset\n\n        segmentLoader.resetEverything();\n        startLoaders(activeGroup.playlistLoader, mediaType);\n    };\n    const onError = {\n        /**\n         * Returns a function to be called when a SegmentLoader or PlaylistLoader encounters\n         * an error.\n         *\n         * @param {string} type\n         *        MediaGroup type\n         * @param {Object} settings\n         *        Object containing required information for media groups\n         * @return {Function}\n         *         Error handler. Logs warning (or error if the playlist is excluded) to\n         *         console and switches back to default audio track.\n         * @function onError.AUDIO\n         */\n        AUDIO: (type, settings) => () => {\n            const {\n                segmentLoaders: {\n                    [type]: segmentLoader\n                },\n                mediaTypes: {\n                    [type]: mediaType\n                },\n                excludePlaylist\n            } = settings;\n            stopLoaders(segmentLoader, mediaType); // switch back to default audio track\n\n            const activeTrack = mediaType.activeTrack();\n            const activeGroup = mediaType.activeGroup();\n            const id = (activeGroup.filter(group => group.default)[0] || activeGroup[0]).id;\n            const defaultTrack = mediaType.tracks[id];\n            if (activeTrack === defaultTrack) {\n                // Default track encountered an error. All we can do now is exclude the current\n                // rendition and hope another will switch audio groups\n                excludePlaylist({\n                    error: {\n                        message: 'Problem encountered loading the default audio track.'\n                    }\n                });\n                return;\n            }\n            videojs.log.warn('Problem encountered loading the alternate audio track.' + 'Switching back to default.');\n            for (const trackId in mediaType.tracks) {\n                mediaType.tracks[trackId].enabled = mediaType.tracks[trackId] === defaultTrack;\n            }\n            mediaType.onTrackChanged();\n        },\n        /**\n         * Returns a function to be called when a SegmentLoader or PlaylistLoader encounters\n         * an error.\n         *\n         * @param {string} type\n         *        MediaGroup type\n         * @param {Object} settings\n         *        Object containing required information for media groups\n         * @return {Function}\n         *         Error handler. Logs warning to console and disables the active subtitle track\n         * @function onError.SUBTITLES\n         */\n        SUBTITLES: (type, settings) => () => {\n            const {\n                segmentLoaders: {\n                    [type]: segmentLoader\n                },\n                mediaTypes: {\n                    [type]: mediaType\n                }\n            } = settings;\n            videojs.log.warn('Problem encountered loading the subtitle track.' + 'Disabling subtitle track.');\n            stopLoaders(segmentLoader, mediaType);\n            const track = mediaType.activeTrack();\n            if (track) {\n                track.mode = 'disabled';\n            }\n            mediaType.onTrackChanged();\n        }\n    };\n    const setupListeners = {\n        /**\n         * Setup event listeners for audio playlist loader\n         *\n         * @param {string} type\n         *        MediaGroup type\n         * @param {PlaylistLoader|null} playlistLoader\n         *        PlaylistLoader to register listeners on\n         * @param {Object} settings\n         *        Object containing required information for media groups\n         * @function setupListeners.AUDIO\n         */\n        AUDIO: (type, playlistLoader, settings) => {\n            if (!playlistLoader) {\n                // no playlist loader means audio will be muxed with the video\n                return;\n            }\n            const {\n                tech,\n                requestOptions,\n                segmentLoaders: {\n                    [type]: segmentLoader\n                }\n            } = settings;\n            playlistLoader.on('loadedmetadata', () => {\n                const media = playlistLoader.media();\n                segmentLoader.playlist(media, requestOptions); // if the video is already playing, or if this isn't a live video and preload\n                // permits, start downloading segments\n\n                if (!tech.paused() || media.endList && tech.preload() !== 'none') {\n                    segmentLoader.load();\n                }\n            });\n            playlistLoader.on('loadedplaylist', () => {\n                segmentLoader.playlist(playlistLoader.media(), requestOptions); // If the player isn't paused, ensure that the segment loader is running\n\n                if (!tech.paused()) {\n                    segmentLoader.load();\n                }\n            });\n            playlistLoader.on('error', onError[type](type, settings));\n        },\n        /**\n         * Setup event listeners for subtitle playlist loader\n         *\n         * @param {string} type\n         *        MediaGroup type\n         * @param {PlaylistLoader|null} playlistLoader\n         *        PlaylistLoader to register listeners on\n         * @param {Object} settings\n         *        Object containing required information for media groups\n         * @function setupListeners.SUBTITLES\n         */\n        SUBTITLES: (type, playlistLoader, settings) => {\n            const {\n                tech,\n                requestOptions,\n                segmentLoaders: {\n                    [type]: segmentLoader\n                },\n                mediaTypes: {\n                    [type]: mediaType\n                }\n            } = settings;\n            playlistLoader.on('loadedmetadata', () => {\n                const media = playlistLoader.media();\n                segmentLoader.playlist(media, requestOptions);\n                segmentLoader.track(mediaType.activeTrack()); // if the video is already playing, or if this isn't a live video and preload\n                // permits, start downloading segments\n\n                if (!tech.paused() || media.endList && tech.preload() !== 'none') {\n                    segmentLoader.load();\n                }\n            });\n            playlistLoader.on('loadedplaylist', () => {\n                segmentLoader.playlist(playlistLoader.media(), requestOptions); // If the player isn't paused, ensure that the segment loader is running\n\n                if (!tech.paused()) {\n                    segmentLoader.load();\n                }\n            });\n            playlistLoader.on('error', onError[type](type, settings));\n        }\n    };\n    const initialize = {\n        /**\n         * Setup PlaylistLoaders and AudioTracks for the audio groups\n         *\n         * @param {string} type\n         *        MediaGroup type\n         * @param {Object} settings\n         *        Object containing required information for media groups\n         * @function initialize.AUDIO\n         */\n        'AUDIO': (type, settings) => {\n            const {\n                vhs,\n                sourceType,\n                segmentLoaders: {\n                    [type]: segmentLoader\n                },\n                requestOptions,\n                main: {\n                    mediaGroups\n                },\n                mediaTypes: {\n                    [type]: {\n                        groups,\n                        tracks,\n                        logger_\n                    }\n                },\n                mainPlaylistLoader\n            } = settings;\n            const audioOnlyMain = isAudioOnly(mainPlaylistLoader.main); // force a default if we have none\n\n            if (!mediaGroups[type] || Object.keys(mediaGroups[type]).length === 0) {\n                mediaGroups[type] = {\n                    main: {\n                        default: {\n                            default: true\n                        }\n                    }\n                };\n                if (audioOnlyMain) {\n                    mediaGroups[type].main.default.playlists = mainPlaylistLoader.main.playlists;\n                }\n            }\n            for (const groupId in mediaGroups[type]) {\n                if (!groups[groupId]) {\n                    groups[groupId] = [];\n                }\n                for (const variantLabel in mediaGroups[type][groupId]) {\n                    let properties = mediaGroups[type][groupId][variantLabel];\n                    let playlistLoader;\n                    if (audioOnlyMain) {\n                        logger_(`AUDIO group '${groupId}' label '${variantLabel}' is a main playlist`);\n                        properties.isMainPlaylist = true;\n                        playlistLoader = null; // if vhs-json was provided as the source, and the media playlist was resolved,\n                        // use the resolved media playlist object\n                    } else if (sourceType === 'vhs-json' && properties.playlists) {\n                        playlistLoader = new PlaylistLoader(properties.playlists[0], vhs, requestOptions);\n                    } else if (properties.resolvedUri) {\n                        playlistLoader = new PlaylistLoader(properties.resolvedUri, vhs, requestOptions); // TODO: dash isn't the only type with properties.playlists\n                        // should we even have properties.playlists in this check.\n                    } else if (properties.playlists && sourceType === 'dash') {\n                        playlistLoader = new DashPlaylistLoader(properties.playlists[0], vhs, requestOptions, mainPlaylistLoader);\n                    } else {\n                        // no resolvedUri means the audio is muxed with the video when using this\n                        // audio track\n                        playlistLoader = null;\n                    }\n                    properties = merge({\n                        id: variantLabel,\n                        playlistLoader\n                    }, properties);\n                    setupListeners[type](type, properties.playlistLoader, settings);\n                    groups[groupId].push(properties);\n                    if (typeof tracks[variantLabel] === 'undefined') {\n                        const track = new videojs.AudioTrack({\n                            id: variantLabel,\n                            kind: audioTrackKind_(properties),\n                            enabled: false,\n                            language: properties.language,\n                            default: properties.default,\n                            label: variantLabel\n                        });\n                        tracks[variantLabel] = track;\n                    }\n                }\n            } // setup single error event handler for the segment loader\n\n            segmentLoader.on('error', onError[type](type, settings));\n        },\n        /**\n         * Setup PlaylistLoaders and TextTracks for the subtitle groups\n         *\n         * @param {string} type\n         *        MediaGroup type\n         * @param {Object} settings\n         *        Object containing required information for media groups\n         * @function initialize.SUBTITLES\n         */\n        'SUBTITLES': (type, settings) => {\n            const {\n                tech,\n                vhs,\n                sourceType,\n                segmentLoaders: {\n                    [type]: segmentLoader\n                },\n                requestOptions,\n                main: {\n                    mediaGroups\n                },\n                mediaTypes: {\n                    [type]: {\n                        groups,\n                        tracks\n                    }\n                },\n                mainPlaylistLoader\n            } = settings;\n            for (const groupId in mediaGroups[type]) {\n                if (!groups[groupId]) {\n                    groups[groupId] = [];\n                }\n                for (const variantLabel in mediaGroups[type][groupId]) {\n                    if (mediaGroups[type][groupId][variantLabel].forced) {\n                        // Subtitle playlists with the forced attribute are not selectable in Safari.\n                        // According to Apple's HLS Authoring Specification:\n                        //   If content has forced subtitles and regular subtitles in a given language,\n                        //   the regular subtitles track in that language MUST contain both the forced\n                        //   subtitles and the regular subtitles for that language.\n                        // Because of this requirement and that Safari does not add forced subtitles,\n                        // forced subtitles are skipped here to maintain consistent experience across\n                        // all platforms\n                        continue;\n                    }\n                    let properties = mediaGroups[type][groupId][variantLabel];\n                    let playlistLoader;\n                    if (sourceType === 'hls') {\n                        playlistLoader = new PlaylistLoader(properties.resolvedUri, vhs, requestOptions);\n                    } else if (sourceType === 'dash') {\n                        const playlists = properties.playlists.filter(p => p.excludeUntil !== Infinity);\n                        if (!playlists.length) {\n                            return;\n                        }\n                        playlistLoader = new DashPlaylistLoader(properties.playlists[0], vhs, requestOptions, mainPlaylistLoader);\n                    } else if (sourceType === 'vhs-json') {\n                        playlistLoader = new PlaylistLoader(\n                            // if the vhs-json object included the media playlist, use the media playlist\n                            // as provided, otherwise use the resolved URI to load the playlist\n                            properties.playlists ? properties.playlists[0] : properties.resolvedUri, vhs, requestOptions);\n                    }\n                    properties = merge({\n                        id: variantLabel,\n                        playlistLoader\n                    }, properties);\n                    setupListeners[type](type, properties.playlistLoader, settings);\n                    groups[groupId].push(properties);\n                    if (typeof tracks[variantLabel] === 'undefined') {\n                        const track = tech.addRemoteTextTrack({\n                            id: variantLabel,\n                            kind: 'subtitles',\n                            default: properties.default && properties.autoselect,\n                            language: properties.language,\n                            label: variantLabel\n                        }, false).track;\n                        tracks[variantLabel] = track;\n                    }\n                }\n            } // setup single error event handler for the segment loader\n\n            segmentLoader.on('error', onError[type](type, settings));\n        },\n        /**\n         * Setup TextTracks for the closed-caption groups\n         *\n         * @param {String} type\n         *        MediaGroup type\n         * @param {Object} settings\n         *        Object containing required information for media groups\n         * @function initialize['CLOSED-CAPTIONS']\n         */\n        'CLOSED-CAPTIONS': (type, settings) => {\n            const {\n                tech,\n                main: {\n                    mediaGroups\n                },\n                mediaTypes: {\n                    [type]: {\n                        groups,\n                        tracks\n                    }\n                }\n            } = settings;\n            for (const groupId in mediaGroups[type]) {\n                if (!groups[groupId]) {\n                    groups[groupId] = [];\n                }\n                for (const variantLabel in mediaGroups[type][groupId]) {\n                    const properties = mediaGroups[type][groupId][variantLabel]; // Look for either 608 (CCn) or 708 (SERVICEn) caption services\n\n                    if (!/^(?:CC|SERVICE)/.test(properties.instreamId)) {\n                        continue;\n                    }\n                    const captionServices = tech.options_.vhs && tech.options_.vhs.captionServices || {};\n                    let newProps = {\n                        label: variantLabel,\n                        language: properties.language,\n                        instreamId: properties.instreamId,\n                        default: properties.default && properties.autoselect\n                    };\n                    if (captionServices[newProps.instreamId]) {\n                        newProps = merge(newProps, captionServices[newProps.instreamId]);\n                    }\n                    if (newProps.default === undefined) {\n                        delete newProps.default;\n                    } // No PlaylistLoader is required for Closed-Captions because the captions are\n                    // embedded within the video stream\n\n                    groups[groupId].push(merge({\n                        id: variantLabel\n                    }, properties));\n                    if (typeof tracks[variantLabel] === 'undefined') {\n                        const track = tech.addRemoteTextTrack({\n                            id: newProps.instreamId,\n                            kind: 'captions',\n                            default: newProps.default,\n                            language: newProps.language,\n                            label: newProps.label\n                        }, false).track;\n                        tracks[variantLabel] = track;\n                    }\n                }\n            }\n        }\n    };\n    const groupMatch = (list, media) => {\n        for (let i = 0; i < list.length; i++) {\n            if (playlistMatch(media, list[i])) {\n                return true;\n            }\n            if (list[i].playlists && groupMatch(list[i].playlists, media)) {\n                return true;\n            }\n        }\n        return false;\n    };\n    /**\n     * Returns a function used to get the active group of the provided type\n     *\n     * @param {string} type\n     *        MediaGroup type\n     * @param {Object} settings\n     *        Object containing required information for media groups\n     * @return {Function}\n     *         Function that returns the active media group for the provided type. Takes an\n     *         optional parameter {TextTrack} track. If no track is provided, a list of all\n     *         variants in the group, otherwise the variant corresponding to the provided\n     *         track is returned.\n     * @function activeGroup\n     */\n\n    const activeGroup = (type, settings) => track => {\n        const {\n            mainPlaylistLoader,\n            mediaTypes: {\n                [type]: {\n                    groups\n                }\n            }\n        } = settings;\n        const media = mainPlaylistLoader.media();\n        if (!media) {\n            return null;\n        }\n        let variants = null; // set to variants to main media active group\n\n        if (media.attributes[type]) {\n            variants = groups[media.attributes[type]];\n        }\n        const groupKeys = Object.keys(groups);\n        if (!variants) {\n            // find the mainPlaylistLoader media\n            // that is in a media group if we are dealing\n            // with audio only\n            if (type === 'AUDIO' && groupKeys.length > 1 && isAudioOnly(settings.main)) {\n                for (let i = 0; i < groupKeys.length; i++) {\n                    const groupPropertyList = groups[groupKeys[i]];\n                    if (groupMatch(groupPropertyList, media)) {\n                        variants = groupPropertyList;\n                        break;\n                    }\n                } // use the main group if it exists\n            } else if (groups.main) {\n                variants = groups.main; // only one group, use that one\n            } else if (groupKeys.length === 1) {\n                variants = groups[groupKeys[0]];\n            }\n        }\n        if (typeof track === 'undefined') {\n            return variants;\n        }\n        if (track === null || !variants) {\n            // An active track was specified so a corresponding group is expected. track === null\n            // means no track is currently active so there is no corresponding group\n            return null;\n        }\n        return variants.filter(props => props.id === track.id)[0] || null;\n    };\n    const activeTrack = {\n        /**\n         * Returns a function used to get the active track of type provided\n         *\n         * @param {string} type\n         *        MediaGroup type\n         * @param {Object} settings\n         *        Object containing required information for media groups\n         * @return {Function}\n         *         Function that returns the active media track for the provided type. Returns\n         *         null if no track is active\n         * @function activeTrack.AUDIO\n         */\n        AUDIO: (type, settings) => () => {\n            const {\n                mediaTypes: {\n                    [type]: {\n                        tracks\n                    }\n                }\n            } = settings;\n            for (const id in tracks) {\n                if (tracks[id].enabled) {\n                    return tracks[id];\n                }\n            }\n            return null;\n        },\n        /**\n         * Returns a function used to get the active track of type provided\n         *\n         * @param {string} type\n         *        MediaGroup type\n         * @param {Object} settings\n         *        Object containing required information for media groups\n         * @return {Function}\n         *         Function that returns the active media track for the provided type. Returns\n         *         null if no track is active\n         * @function activeTrack.SUBTITLES\n         */\n        SUBTITLES: (type, settings) => () => {\n            const {\n                mediaTypes: {\n                    [type]: {\n                        tracks\n                    }\n                }\n            } = settings;\n            for (const id in tracks) {\n                if (tracks[id].mode === 'showing' || tracks[id].mode === 'hidden') {\n                    return tracks[id];\n                }\n            }\n            return null;\n        }\n    };\n    const getActiveGroup = (type, {\n        mediaTypes\n    }) => () => {\n        const activeTrack_ = mediaTypes[type].activeTrack();\n        if (!activeTrack_) {\n            return null;\n        }\n        return mediaTypes[type].activeGroup(activeTrack_);\n    };\n    /**\n     * Setup PlaylistLoaders and Tracks for media groups (Audio, Subtitles,\n     * Closed-Captions) specified in the main manifest.\n     *\n     * @param {Object} settings\n     *        Object containing required information for setting up the media groups\n     * @param {Tech} settings.tech\n     *        The tech of the player\n     * @param {Object} settings.requestOptions\n     *        XHR request options used by the segment loaders\n     * @param {PlaylistLoader} settings.mainPlaylistLoader\n     *        PlaylistLoader for the main source\n     * @param {VhsHandler} settings.vhs\n     *        VHS SourceHandler\n     * @param {Object} settings.main\n     *        The parsed main manifest\n     * @param {Object} settings.mediaTypes\n     *        Object to store the loaders, tracks, and utility methods for each media type\n     * @param {Function} settings.excludePlaylist\n     *        Excludes the current rendition and forces a rendition switch.\n     * @function setupMediaGroups\n     */\n\n    const setupMediaGroups = settings => {\n        ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {\n            initialize[type](type, settings);\n        });\n        const {\n            mediaTypes,\n            mainPlaylistLoader,\n            tech,\n            vhs,\n            segmentLoaders: {\n                ['AUDIO']: audioSegmentLoader,\n                main: mainSegmentLoader\n            }\n        } = settings; // setup active group and track getters and change event handlers\n\n        ['AUDIO', 'SUBTITLES'].forEach(type => {\n            mediaTypes[type].activeGroup = activeGroup(type, settings);\n            mediaTypes[type].activeTrack = activeTrack[type](type, settings);\n            mediaTypes[type].onGroupChanged = onGroupChanged(type, settings);\n            mediaTypes[type].onGroupChanging = onGroupChanging(type, settings);\n            mediaTypes[type].onTrackChanged = onTrackChanged(type, settings);\n            mediaTypes[type].getActiveGroup = getActiveGroup(type, settings);\n        }); // DO NOT enable the default subtitle or caption track.\n        // DO enable the default audio track\n\n        const audioGroup = mediaTypes.AUDIO.activeGroup();\n        if (audioGroup) {\n            const groupId = (audioGroup.filter(group => group.default)[0] || audioGroup[0]).id;\n            mediaTypes.AUDIO.tracks[groupId].enabled = true;\n            mediaTypes.AUDIO.onGroupChanged();\n            mediaTypes.AUDIO.onTrackChanged();\n            const activeAudioGroup = mediaTypes.AUDIO.getActiveGroup(); // a similar check for handling setAudio on each loader is run again each time the\n            // track is changed, but needs to be handled here since the track may not be considered\n            // changed on the first call to onTrackChanged\n\n            if (!activeAudioGroup.playlistLoader) {\n                // either audio is muxed with video or the stream is audio only\n                mainSegmentLoader.setAudio(true);\n            } else {\n                // audio is demuxed\n                mainSegmentLoader.setAudio(false);\n                audioSegmentLoader.setAudio(true);\n            }\n        }\n        mainPlaylistLoader.on('mediachange', () => {\n            ['AUDIO', 'SUBTITLES'].forEach(type => mediaTypes[type].onGroupChanged());\n        });\n        mainPlaylistLoader.on('mediachanging', () => {\n            ['AUDIO', 'SUBTITLES'].forEach(type => mediaTypes[type].onGroupChanging());\n        }); // custom audio track change event handler for usage event\n\n        const onAudioTrackChanged = () => {\n            mediaTypes.AUDIO.onTrackChanged();\n            tech.trigger({\n                type: 'usage',\n                name: 'vhs-audio-change'\n            });\n        };\n        tech.audioTracks().addEventListener('change', onAudioTrackChanged);\n        tech.remoteTextTracks().addEventListener('change', mediaTypes.SUBTITLES.onTrackChanged);\n        vhs.on('dispose', () => {\n            tech.audioTracks().removeEventListener('change', onAudioTrackChanged);\n            tech.remoteTextTracks().removeEventListener('change', mediaTypes.SUBTITLES.onTrackChanged);\n        }); // clear existing audio tracks and add the ones we just created\n\n        tech.clearTracks('audio');\n        for (const id in mediaTypes.AUDIO.tracks) {\n            tech.audioTracks().addTrack(mediaTypes.AUDIO.tracks[id]);\n        }\n    };\n    /**\n     * Creates skeleton object used to store the loaders, tracks, and utility methods for each\n     * media type\n     *\n     * @return {Object}\n     *         Object to store the loaders, tracks, and utility methods for each media type\n     * @function createMediaTypes\n     */\n\n    const createMediaTypes = () => {\n        const mediaTypes = {};\n        ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {\n            mediaTypes[type] = {\n                groups: {},\n                tracks: {},\n                activePlaylistLoader: null,\n                activeGroup: noop,\n                activeTrack: noop,\n                getActiveGroup: noop,\n                onGroupChanged: noop,\n                onTrackChanged: noop,\n                lastTrack_: null,\n                logger_: logger(`MediaGroups[${type}]`)\n            };\n        });\n        return mediaTypes;\n    };\n\n    /**\n     * @file playlist-controller.js\n     */\n    const ABORT_EARLY_EXCLUSION_SECONDS = 60 * 2;\n    let Vhs$1; // SegmentLoader stats that need to have each loader's\n    // values summed to calculate the final value\n\n    const loaderStats = ['mediaRequests', 'mediaRequestsAborted', 'mediaRequestsTimedout', 'mediaRequestsErrored', 'mediaTransferDuration', 'mediaBytesTransferred', 'mediaAppends'];\n    const sumLoaderStat = function (stat) {\n        return this.audioSegmentLoader_[stat] + this.mainSegmentLoader_[stat];\n    };\n    const shouldSwitchToMedia = function ({\n                                              currentPlaylist,\n                                              buffered,\n                                              currentTime,\n                                              nextPlaylist,\n                                              bufferLowWaterLine,\n                                              bufferHighWaterLine,\n                                              duration,\n                                              bufferBasedABR,\n                                              log\n                                          }) {\n        // we have no other playlist to switch to\n        if (!nextPlaylist) {\n            videojs.log.warn('We received no playlist to switch to. Please check your stream.');\n            return false;\n        }\n        const sharedLogLine = `allowing switch ${currentPlaylist && currentPlaylist.id || 'null'} -> ${nextPlaylist.id}`;\n        if (!currentPlaylist) {\n            log(`${sharedLogLine} as current playlist is not set`);\n            return true;\n        } // no need to switch if playlist is the same\n\n        if (nextPlaylist.id === currentPlaylist.id) {\n            return false;\n        } // determine if current time is in a buffered range.\n\n        const isBuffered = Boolean(findRange(buffered, currentTime).length); // If the playlist is live, then we want to not take low water line into account.\n        // This is because in LIVE, the player plays 3 segments from the end of the\n        // playlist, and if `BUFFER_LOW_WATER_LINE` is greater than the duration availble\n        // in those segments, a viewer will never experience a rendition upswitch.\n\n        if (!currentPlaylist.endList) {\n            // For LLHLS live streams, don't switch renditions before playback has started, as it almost\n            // doubles the time to first playback.\n            if (!isBuffered && typeof currentPlaylist.partTargetDuration === 'number') {\n                log(`not ${sharedLogLine} as current playlist is live llhls, but currentTime isn't in buffered.`);\n                return false;\n            }\n            log(`${sharedLogLine} as current playlist is live`);\n            return true;\n        }\n        const forwardBuffer = timeAheadOf(buffered, currentTime);\n        const maxBufferLowWaterLine = bufferBasedABR ? Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE : Config.MAX_BUFFER_LOW_WATER_LINE; // For the same reason as LIVE, we ignore the low water line when the VOD\n        // duration is below the max potential low water line\n\n        if (duration < maxBufferLowWaterLine) {\n            log(`${sharedLogLine} as duration < max low water line (${duration} < ${maxBufferLowWaterLine})`);\n            return true;\n        }\n        const nextBandwidth = nextPlaylist.attributes.BANDWIDTH;\n        const currBandwidth = currentPlaylist.attributes.BANDWIDTH; // when switching down, if our buffer is lower than the high water line,\n        // we can switch down\n\n        if (nextBandwidth < currBandwidth && (!bufferBasedABR || forwardBuffer < bufferHighWaterLine)) {\n            let logLine = `${sharedLogLine} as next bandwidth < current bandwidth (${nextBandwidth} < ${currBandwidth})`;\n            if (bufferBasedABR) {\n                logLine += ` and forwardBuffer < bufferHighWaterLine (${forwardBuffer} < ${bufferHighWaterLine})`;\n            }\n            log(logLine);\n            return true;\n        } // and if our buffer is higher than the low water line,\n        // we can switch up\n\n        if ((!bufferBasedABR || nextBandwidth > currBandwidth) && forwardBuffer >= bufferLowWaterLine) {\n            let logLine = `${sharedLogLine} as forwardBuffer >= bufferLowWaterLine (${forwardBuffer} >= ${bufferLowWaterLine})`;\n            if (bufferBasedABR) {\n                logLine += ` and next bandwidth > current bandwidth (${nextBandwidth} > ${currBandwidth})`;\n            }\n            log(logLine);\n            return true;\n        }\n        log(`not ${sharedLogLine} as no switching criteria met`);\n        return false;\n    };\n    /**\n     * the main playlist controller controller all interactons\n     * between playlists and segmentloaders. At this time this mainly\n     * involves a main playlist and a series of audio playlists\n     * if they are available\n     *\n     * @class PlaylistController\n     * @extends videojs.EventTarget\n     */\n\n    class PlaylistController extends videojs.EventTarget {\n        constructor(options) {\n            super();\n            const {\n                src,\n                withCredentials,\n                tech,\n                bandwidth,\n                externVhs,\n                useCueTags,\n                playlistExclusionDuration,\n                enableLowInitialPlaylist,\n                sourceType,\n                cacheEncryptionKeys,\n                bufferBasedABR,\n                leastPixelDiffSelector,\n                captionServices\n            } = options;\n            if (!src) {\n                throw new Error('A non-empty playlist URL or JSON manifest string is required');\n            }\n            let {\n                maxPlaylistRetries\n            } = options;\n            if (maxPlaylistRetries === null || typeof maxPlaylistRetries === 'undefined') {\n                maxPlaylistRetries = Infinity;\n            }\n            Vhs$1 = externVhs;\n            this.bufferBasedABR = Boolean(bufferBasedABR);\n            this.leastPixelDiffSelector = Boolean(leastPixelDiffSelector);\n            this.withCredentials = withCredentials;\n            this.tech_ = tech;\n            this.vhs_ = tech.vhs;\n            this.sourceType_ = sourceType;\n            this.useCueTags_ = useCueTags;\n            this.playlistExclusionDuration = playlistExclusionDuration;\n            this.maxPlaylistRetries = maxPlaylistRetries;\n            this.enableLowInitialPlaylist = enableLowInitialPlaylist;\n            if (this.useCueTags_) {\n                this.cueTagsTrack_ = this.tech_.addTextTrack('metadata', 'ad-cues');\n                this.cueTagsTrack_.inBandMetadataTrackDispatchType = '';\n            }\n            this.requestOptions_ = {\n                withCredentials,\n                maxPlaylistRetries,\n                timeout: null\n            };\n            this.on('error', this.pauseLoading);\n            this.mediaTypes_ = createMediaTypes();\n            this.mediaSource = new window.MediaSource();\n            this.handleDurationChange_ = this.handleDurationChange_.bind(this);\n            this.handleSourceOpen_ = this.handleSourceOpen_.bind(this);\n            this.handleSourceEnded_ = this.handleSourceEnded_.bind(this);\n            this.mediaSource.addEventListener('durationchange', this.handleDurationChange_); // load the media source into the player\n\n            this.mediaSource.addEventListener('sourceopen', this.handleSourceOpen_);\n            this.mediaSource.addEventListener('sourceended', this.handleSourceEnded_); // we don't have to handle sourceclose since dispose will handle termination of\n            // everything, and the MediaSource should not be detached without a proper disposal\n\n            this.seekable_ = createTimeRanges();\n            this.hasPlayed_ = false;\n            this.syncController_ = new SyncController(options);\n            this.segmentMetadataTrack_ = tech.addRemoteTextTrack({\n                kind: 'metadata',\n                label: 'segment-metadata'\n            }, false).track;\n            this.decrypter_ = new Decrypter();\n            this.sourceUpdater_ = new SourceUpdater(this.mediaSource);\n            this.inbandTextTracks_ = {};\n            this.timelineChangeController_ = new TimelineChangeController();\n            const segmentLoaderSettings = {\n                vhs: this.vhs_,\n                parse708captions: options.parse708captions,\n                useDtsForTimestampOffset: options.useDtsForTimestampOffset,\n                captionServices,\n                mediaSource: this.mediaSource,\n                currentTime: this.tech_.currentTime.bind(this.tech_),\n                seekable: () => this.seekable(),\n                seeking: () => this.tech_.seeking(),\n                duration: () => this.duration(),\n                hasPlayed: () => this.hasPlayed_,\n                goalBufferLength: () => this.goalBufferLength(),\n                bandwidth,\n                syncController: this.syncController_,\n                decrypter: this.decrypter_,\n                sourceType: this.sourceType_,\n                inbandTextTracks: this.inbandTextTracks_,\n                cacheEncryptionKeys,\n                sourceUpdater: this.sourceUpdater_,\n                timelineChangeController: this.timelineChangeController_,\n                exactManifestTimings: options.exactManifestTimings\n            }; // The source type check not only determines whether a special DASH playlist loader\n            // should be used, but also covers the case where the provided src is a vhs-json\n            // manifest object (instead of a URL). In the case of vhs-json, the default\n            // PlaylistLoader should be used.\n\n            this.mainPlaylistLoader_ = this.sourceType_ === 'dash' ? new DashPlaylistLoader(src, this.vhs_, this.requestOptions_) : new PlaylistLoader(src, this.vhs_, this.requestOptions_);\n            this.setupMainPlaylistLoaderListeners_(); // setup segment loaders\n            // combined audio/video or just video when alternate audio track is selected\n\n            this.mainSegmentLoader_ = new SegmentLoader(merge(segmentLoaderSettings, {\n                segmentMetadataTrack: this.segmentMetadataTrack_,\n                loaderType: 'main'\n            }), options); // alternate audio track\n\n            this.audioSegmentLoader_ = new SegmentLoader(merge(segmentLoaderSettings, {\n                loaderType: 'audio'\n            }), options);\n            this.subtitleSegmentLoader_ = new VTTSegmentLoader(merge(segmentLoaderSettings, {\n                loaderType: 'vtt',\n                featuresNativeTextTracks: this.tech_.featuresNativeTextTracks,\n                loadVttJs: () => new Promise((resolve, reject) => {\n                    function onLoad() {\n                        tech.off('vttjserror', onError);\n                        resolve();\n                    }\n                    function onError() {\n                        tech.off('vttjsloaded', onLoad);\n                        reject();\n                    }\n                    tech.one('vttjsloaded', onLoad);\n                    tech.one('vttjserror', onError); // safe to call multiple times, script will be loaded only once:\n\n                    tech.addWebVttScript_();\n                })\n            }), options);\n            this.setupSegmentLoaderListeners_();\n            if (this.bufferBasedABR) {\n                this.mainPlaylistLoader_.one('loadedplaylist', () => this.startABRTimer_());\n                this.tech_.on('pause', () => this.stopABRTimer_());\n                this.tech_.on('play', () => this.startABRTimer_());\n            } // Create SegmentLoader stat-getters\n            // mediaRequests_\n            // mediaRequestsAborted_\n            // mediaRequestsTimedout_\n            // mediaRequestsErrored_\n            // mediaTransferDuration_\n            // mediaBytesTransferred_\n            // mediaAppends_\n\n            loaderStats.forEach(stat => {\n                this[stat + '_'] = sumLoaderStat.bind(this, stat);\n            });\n            this.logger_ = logger('pc');\n            this.triggeredFmp4Usage = false;\n            if (this.tech_.preload() === 'none') {\n                this.loadOnPlay_ = () => {\n                    this.loadOnPlay_ = null;\n                    this.mainPlaylistLoader_.load();\n                };\n                this.tech_.one('play', this.loadOnPlay_);\n            } else {\n                this.mainPlaylistLoader_.load();\n            }\n            this.timeToLoadedData__ = -1;\n            this.mainAppendsToLoadedData__ = -1;\n            this.audioAppendsToLoadedData__ = -1;\n            const event = this.tech_.preload() === 'none' ? 'play' : 'loadstart'; // start the first frame timer on loadstart or play (for preload none)\n\n            this.tech_.one(event, () => {\n                const timeToLoadedDataStart = Date.now();\n                this.tech_.one('loadeddata', () => {\n                    this.timeToLoadedData__ = Date.now() - timeToLoadedDataStart;\n                    this.mainAppendsToLoadedData__ = this.mainSegmentLoader_.mediaAppends;\n                    this.audioAppendsToLoadedData__ = this.audioSegmentLoader_.mediaAppends;\n                });\n            });\n        }\n        mainAppendsToLoadedData_() {\n            return this.mainAppendsToLoadedData__;\n        }\n        audioAppendsToLoadedData_() {\n            return this.audioAppendsToLoadedData__;\n        }\n        appendsToLoadedData_() {\n            const main = this.mainAppendsToLoadedData_();\n            const audio = this.audioAppendsToLoadedData_();\n            if (main === -1 || audio === -1) {\n                return -1;\n            }\n            return main + audio;\n        }\n        timeToLoadedData_() {\n            return this.timeToLoadedData__;\n        }\n        /**\n         * Run selectPlaylist and switch to the new playlist if we should\n         *\n         * @param {string} [reason=abr] a reason for why the ABR check is made\n         * @private\n         */\n\n        checkABR_(reason = 'abr') {\n            const nextPlaylist = this.selectPlaylist();\n            if (nextPlaylist && this.shouldSwitchToMedia_(nextPlaylist)) {\n                this.switchMedia_(nextPlaylist, reason);\n            }\n        }\n        switchMedia_(playlist, cause, delay) {\n            const oldMedia = this.media();\n            const oldId = oldMedia && (oldMedia.id || oldMedia.uri);\n            const newId = playlist.id || playlist.uri;\n            if (oldId && oldId !== newId) {\n                this.logger_(`switch media ${oldId} -> ${newId} from ${cause}`);\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: `vhs-rendition-change-${cause}`\n                });\n            }\n            this.mainPlaylistLoader_.media(playlist, delay);\n        }\n        /**\n         * Start a timer that periodically calls checkABR_\n         *\n         * @private\n         */\n\n        startABRTimer_() {\n            this.stopABRTimer_();\n            this.abrTimer_ = window.setInterval(() => this.checkABR_(), 250);\n        }\n        /**\n         * Stop the timer that periodically calls checkABR_\n         *\n         * @private\n         */\n\n        stopABRTimer_() {\n            // if we're scrubbing, we don't need to pause.\n            // This getter will be added to Video.js in version 7.11.\n            if (this.tech_.scrubbing && this.tech_.scrubbing()) {\n                return;\n            }\n            window.clearInterval(this.abrTimer_);\n            this.abrTimer_ = null;\n        }\n        /**\n         * Get a list of playlists for the currently selected audio playlist\n         *\n         * @return {Array} the array of audio playlists\n         */\n\n        getAudioTrackPlaylists_() {\n            const main = this.main();\n            const defaultPlaylists = main && main.playlists || []; // if we don't have any audio groups then we can only\n            // assume that the audio tracks are contained in main\n            // playlist array, use that or an empty array.\n\n            if (!main || !main.mediaGroups || !main.mediaGroups.AUDIO) {\n                return defaultPlaylists;\n            }\n            const AUDIO = main.mediaGroups.AUDIO;\n            const groupKeys = Object.keys(AUDIO);\n            let track; // get the current active track\n\n            if (Object.keys(this.mediaTypes_.AUDIO.groups).length) {\n                track = this.mediaTypes_.AUDIO.activeTrack(); // or get the default track from main if mediaTypes_ isn't setup yet\n            } else {\n                // default group is `main` or just the first group.\n                const defaultGroup = AUDIO.main || groupKeys.length && AUDIO[groupKeys[0]];\n                for (const label in defaultGroup) {\n                    if (defaultGroup[label].default) {\n                        track = {\n                            label\n                        };\n                        break;\n                    }\n                }\n            } // no active track no playlists.\n\n            if (!track) {\n                return defaultPlaylists;\n            }\n            const playlists = []; // get all of the playlists that are possible for the\n            // active track.\n\n            for (const group in AUDIO) {\n                if (AUDIO[group][track.label]) {\n                    const properties = AUDIO[group][track.label];\n                    if (properties.playlists && properties.playlists.length) {\n                        playlists.push.apply(playlists, properties.playlists);\n                    } else if (properties.uri) {\n                        playlists.push(properties);\n                    } else if (main.playlists.length) {\n                        // if an audio group does not have a uri\n                        // see if we have main playlists that use it as a group.\n                        // if we do then add those to the playlists list.\n                        for (let i = 0; i < main.playlists.length; i++) {\n                            const playlist = main.playlists[i];\n                            if (playlist.attributes && playlist.attributes.AUDIO && playlist.attributes.AUDIO === group) {\n                                playlists.push(playlist);\n                            }\n                        }\n                    }\n                }\n            }\n            if (!playlists.length) {\n                return defaultPlaylists;\n            }\n            return playlists;\n        }\n        /**\n         * Register event handlers on the main playlist loader. A helper\n         * function for construction time.\n         *\n         * @private\n         */\n\n        setupMainPlaylistLoaderListeners_() {\n            this.mainPlaylistLoader_.on('loadedmetadata', () => {\n                const media = this.mainPlaylistLoader_.media();\n                const requestTimeout = media.targetDuration * 1.5 * 1000; // If we don't have any more available playlists, we don't want to\n                // timeout the request.\n\n                if (isLowestEnabledRendition(this.mainPlaylistLoader_.main, this.mainPlaylistLoader_.media())) {\n                    this.requestOptions_.timeout = 0;\n                } else {\n                    this.requestOptions_.timeout = requestTimeout;\n                } // if this isn't a live video and preload permits, start\n                // downloading segments\n\n                if (media.endList && this.tech_.preload() !== 'none') {\n                    this.mainSegmentLoader_.playlist(media, this.requestOptions_);\n                    this.mainSegmentLoader_.load();\n                }\n                setupMediaGroups({\n                    sourceType: this.sourceType_,\n                    segmentLoaders: {\n                        AUDIO: this.audioSegmentLoader_,\n                        SUBTITLES: this.subtitleSegmentLoader_,\n                        main: this.mainSegmentLoader_\n                    },\n                    tech: this.tech_,\n                    requestOptions: this.requestOptions_,\n                    mainPlaylistLoader: this.mainPlaylistLoader_,\n                    vhs: this.vhs_,\n                    main: this.main(),\n                    mediaTypes: this.mediaTypes_,\n                    excludePlaylist: this.excludePlaylist.bind(this)\n                });\n                this.triggerPresenceUsage_(this.main(), media);\n                this.setupFirstPlay();\n                if (!this.mediaTypes_.AUDIO.activePlaylistLoader || this.mediaTypes_.AUDIO.activePlaylistLoader.media()) {\n                    this.trigger('selectedinitialmedia');\n                } else {\n                    // We must wait for the active audio playlist loader to\n                    // finish setting up before triggering this event so the\n                    // representations API and EME setup is correct\n                    this.mediaTypes_.AUDIO.activePlaylistLoader.one('loadedmetadata', () => {\n                        this.trigger('selectedinitialmedia');\n                    });\n                }\n            });\n            this.mainPlaylistLoader_.on('loadedplaylist', () => {\n                if (this.loadOnPlay_) {\n                    this.tech_.off('play', this.loadOnPlay_);\n                }\n                let updatedPlaylist = this.mainPlaylistLoader_.media();\n                if (!updatedPlaylist) {\n                    // exclude any variants that are not supported by the browser before selecting\n                    // an initial media as the playlist selectors do not consider browser support\n                    this.excludeUnsupportedVariants_();\n                    let selectedMedia;\n                    if (this.enableLowInitialPlaylist) {\n                        selectedMedia = this.selectInitialPlaylist();\n                    }\n                    if (!selectedMedia) {\n                        selectedMedia = this.selectPlaylist();\n                    }\n                    if (!selectedMedia || !this.shouldSwitchToMedia_(selectedMedia)) {\n                        return;\n                    }\n                    this.initialMedia_ = selectedMedia;\n                    this.switchMedia_(this.initialMedia_, 'initial'); // Under the standard case where a source URL is provided, loadedplaylist will\n                    // fire again since the playlist will be requested. In the case of vhs-json\n                    // (where the manifest object is provided as the source), when the media\n                    // playlist's `segments` list is already available, a media playlist won't be\n                    // requested, and loadedplaylist won't fire again, so the playlist handler must be\n                    // called on its own here.\n\n                    const haveJsonSource = this.sourceType_ === 'vhs-json' && this.initialMedia_.segments;\n                    if (!haveJsonSource) {\n                        return;\n                    }\n                    updatedPlaylist = this.initialMedia_;\n                }\n                this.handleUpdatedMediaPlaylist(updatedPlaylist);\n            });\n            this.mainPlaylistLoader_.on('error', () => {\n                const error = this.mainPlaylistLoader_.error;\n                this.excludePlaylist({\n                    playlistToExclude: error.playlist,\n                    error\n                });\n            });\n            this.mainPlaylistLoader_.on('mediachanging', () => {\n                this.mainSegmentLoader_.abort();\n                this.mainSegmentLoader_.pause();\n            });\n            this.mainPlaylistLoader_.on('mediachange', () => {\n                const media = this.mainPlaylistLoader_.media();\n                const requestTimeout = media.targetDuration * 1.5 * 1000; // If we don't have any more available playlists, we don't want to\n                // timeout the request.\n\n                if (isLowestEnabledRendition(this.mainPlaylistLoader_.main, this.mainPlaylistLoader_.media())) {\n                    this.requestOptions_.timeout = 0;\n                } else {\n                    this.requestOptions_.timeout = requestTimeout;\n                }\n                this.mainPlaylistLoader_.load(); // TODO: Create a new event on the PlaylistLoader that signals\n                // that the segments have changed in some way and use that to\n                // update the SegmentLoader instead of doing it twice here and\n                // on `loadedplaylist`\n\n                this.mainSegmentLoader_.playlist(media, this.requestOptions_);\n                this.mainSegmentLoader_.load();\n                this.tech_.trigger({\n                    type: 'mediachange',\n                    bubbles: true\n                });\n            });\n            this.mainPlaylistLoader_.on('playlistunchanged', () => {\n                const updatedPlaylist = this.mainPlaylistLoader_.media(); // ignore unchanged playlists that have already been\n                // excluded for not-changing. We likely just have a really slowly updating\n                // playlist.\n\n                if (updatedPlaylist.lastExcludeReason_ === 'playlist-unchanged') {\n                    return;\n                }\n                const playlistOutdated = this.stuckAtPlaylistEnd_(updatedPlaylist);\n                if (playlistOutdated) {\n                    // Playlist has stopped updating and we're stuck at its end. Try to\n                    // exclude it and switch to another playlist in the hope that that\n                    // one is updating (and give the player a chance to re-adjust to the\n                    // safe live point).\n                    this.excludePlaylist({\n                        error: {\n                            message: 'Playlist no longer updating.',\n                            reason: 'playlist-unchanged'\n                        }\n                    }); // useful for monitoring QoS\n\n                    this.tech_.trigger('playliststuck');\n                }\n            });\n            this.mainPlaylistLoader_.on('renditiondisabled', () => {\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-rendition-disabled'\n                });\n            });\n            this.mainPlaylistLoader_.on('renditionenabled', () => {\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-rendition-enabled'\n                });\n            });\n        }\n        /**\n         * Given an updated media playlist (whether it was loaded for the first time, or\n         * refreshed for live playlists), update any relevant properties and state to reflect\n         * changes in the media that should be accounted for (e.g., cues and duration).\n         *\n         * @param {Object} updatedPlaylist the updated media playlist object\n         *\n         * @private\n         */\n\n        handleUpdatedMediaPlaylist(updatedPlaylist) {\n            if (this.useCueTags_) {\n                this.updateAdCues_(updatedPlaylist);\n            } // TODO: Create a new event on the PlaylistLoader that signals\n            // that the segments have changed in some way and use that to\n            // update the SegmentLoader instead of doing it twice here and\n            // on `mediachange`\n\n            this.mainSegmentLoader_.playlist(updatedPlaylist, this.requestOptions_);\n            this.updateDuration(!updatedPlaylist.endList); // If the player isn't paused, ensure that the segment loader is running,\n            // as it is possible that it was temporarily stopped while waiting for\n            // a playlist (e.g., in case the playlist errored and we re-requested it).\n\n            if (!this.tech_.paused()) {\n                this.mainSegmentLoader_.load();\n                if (this.audioSegmentLoader_) {\n                    this.audioSegmentLoader_.load();\n                }\n            }\n        }\n        /**\n         * A helper function for triggerring presence usage events once per source\n         *\n         * @private\n         */\n\n        triggerPresenceUsage_(main, media) {\n            const mediaGroups = main.mediaGroups || {};\n            let defaultDemuxed = true;\n            const audioGroupKeys = Object.keys(mediaGroups.AUDIO);\n            for (const mediaGroup in mediaGroups.AUDIO) {\n                for (const label in mediaGroups.AUDIO[mediaGroup]) {\n                    const properties = mediaGroups.AUDIO[mediaGroup][label];\n                    if (!properties.uri) {\n                        defaultDemuxed = false;\n                    }\n                }\n            }\n            if (defaultDemuxed) {\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-demuxed'\n                });\n            }\n            if (Object.keys(mediaGroups.SUBTITLES).length) {\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-webvtt'\n                });\n            }\n            if (Vhs$1.Playlist.isAes(media)) {\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-aes'\n                });\n            }\n            if (audioGroupKeys.length && Object.keys(mediaGroups.AUDIO[audioGroupKeys[0]]).length > 1) {\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-alternate-audio'\n                });\n            }\n            if (this.useCueTags_) {\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-playlist-cue-tags'\n                });\n            }\n        }\n        shouldSwitchToMedia_(nextPlaylist) {\n            const currentPlaylist = this.mainPlaylistLoader_.media() || this.mainPlaylistLoader_.pendingMedia_;\n            const currentTime = this.tech_.currentTime();\n            const bufferLowWaterLine = this.bufferLowWaterLine();\n            const bufferHighWaterLine = this.bufferHighWaterLine();\n            const buffered = this.tech_.buffered();\n            return shouldSwitchToMedia({\n                buffered,\n                currentTime,\n                currentPlaylist,\n                nextPlaylist,\n                bufferLowWaterLine,\n                bufferHighWaterLine,\n                duration: this.duration(),\n                bufferBasedABR: this.bufferBasedABR,\n                log: this.logger_\n            });\n        }\n        /**\n         * Register event handlers on the segment loaders. A helper function\n         * for construction time.\n         *\n         * @private\n         */\n\n        setupSegmentLoaderListeners_() {\n            this.mainSegmentLoader_.on('bandwidthupdate', () => {\n                // Whether or not buffer based ABR or another ABR is used, on a bandwidth change it's\n                // useful to check to see if a rendition switch should be made.\n                this.checkABR_('bandwidthupdate');\n                this.tech_.trigger('bandwidthupdate');\n            });\n            this.mainSegmentLoader_.on('timeout', () => {\n                if (this.bufferBasedABR) {\n                    // If a rendition change is needed, then it would've be done on `bandwidthupdate`.\n                    // Here the only consideration is that for buffer based ABR there's no guarantee\n                    // of an immediate switch (since the bandwidth is averaged with a timeout\n                    // bandwidth value of 1), so force a load on the segment loader to keep it going.\n                    this.mainSegmentLoader_.load();\n                }\n            }); // `progress` events are not reliable enough of a bandwidth measure to trigger buffer\n            // based ABR.\n\n            if (!this.bufferBasedABR) {\n                this.mainSegmentLoader_.on('progress', () => {\n                    this.trigger('progress');\n                });\n            }\n            this.mainSegmentLoader_.on('error', () => {\n                const error = this.mainSegmentLoader_.error();\n                this.excludePlaylist({\n                    playlistToExclude: error.playlist,\n                    error\n                });\n            });\n            this.mainSegmentLoader_.on('appenderror', () => {\n                this.error = this.mainSegmentLoader_.error_;\n                this.trigger('error');\n            });\n            this.mainSegmentLoader_.on('syncinfoupdate', () => {\n                this.onSyncInfoUpdate_();\n            });\n            this.mainSegmentLoader_.on('timestampoffset', () => {\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-timestamp-offset'\n                });\n            });\n            this.audioSegmentLoader_.on('syncinfoupdate', () => {\n                this.onSyncInfoUpdate_();\n            });\n            this.audioSegmentLoader_.on('appenderror', () => {\n                this.error = this.audioSegmentLoader_.error_;\n                this.trigger('error');\n            });\n            this.mainSegmentLoader_.on('ended', () => {\n                this.logger_('main segment loader ended');\n                this.onEndOfStream();\n            });\n            this.mainSegmentLoader_.on('earlyabort', event => {\n                // never try to early abort with the new ABR algorithm\n                if (this.bufferBasedABR) {\n                    return;\n                }\n                this.delegateLoaders_('all', ['abort']);\n                this.excludePlaylist({\n                    error: {\n                        message: 'Aborted early because there isn\\'t enough bandwidth to complete ' + 'the request without rebuffering.'\n                    },\n                    playlistExclusionDuration: ABORT_EARLY_EXCLUSION_SECONDS\n                });\n            });\n            const updateCodecs = () => {\n                if (!this.sourceUpdater_.hasCreatedSourceBuffers()) {\n                    return this.tryToCreateSourceBuffers_();\n                }\n                const codecs = this.getCodecsOrExclude_(); // no codecs means that the playlist was excluded\n\n                if (!codecs) {\n                    return;\n                }\n                this.sourceUpdater_.addOrChangeSourceBuffers(codecs);\n            };\n            this.mainSegmentLoader_.on('trackinfo', updateCodecs);\n            this.audioSegmentLoader_.on('trackinfo', updateCodecs);\n            this.mainSegmentLoader_.on('fmp4', () => {\n                if (!this.triggeredFmp4Usage) {\n                    this.tech_.trigger({\n                        type: 'usage',\n                        name: 'vhs-fmp4'\n                    });\n                    this.triggeredFmp4Usage = true;\n                }\n            });\n            this.audioSegmentLoader_.on('fmp4', () => {\n                if (!this.triggeredFmp4Usage) {\n                    this.tech_.trigger({\n                        type: 'usage',\n                        name: 'vhs-fmp4'\n                    });\n                    this.triggeredFmp4Usage = true;\n                }\n            });\n            this.audioSegmentLoader_.on('ended', () => {\n                this.logger_('audioSegmentLoader ended');\n                this.onEndOfStream();\n            });\n        }\n        mediaSecondsLoaded_() {\n            return Math.max(this.audioSegmentLoader_.mediaSecondsLoaded + this.mainSegmentLoader_.mediaSecondsLoaded);\n        }\n        /**\n         * Call load on our SegmentLoaders\n         */\n\n        load() {\n            this.mainSegmentLoader_.load();\n            if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n                this.audioSegmentLoader_.load();\n            }\n            if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {\n                this.subtitleSegmentLoader_.load();\n            }\n        }\n        /**\n         * Re-tune playback quality level for the current player\n         * conditions. This method will perform destructive actions like removing\n         * already buffered content in order to readjust the currently active\n         * playlist quickly. This is good for manual quality changes\n         *\n         * @private\n         */\n\n        fastQualityChange_(media = this.selectPlaylist()) {\n            if (media === this.mainPlaylistLoader_.media()) {\n                this.logger_('skipping fastQualityChange because new media is same as old');\n                return;\n            }\n            this.switchMedia_(media, 'fast-quality'); // Delete all buffered data to allow an immediate quality switch, then seek to give\n            // the browser a kick to remove any cached frames from the previous rendtion (.04 seconds\n            // ahead is roughly the minimum that will accomplish this across a variety of content\n            // in IE and Edge, but seeking in place is sufficient on all other browsers)\n            // Edge/IE bug: https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/14600375/\n            // Chrome bug: https://bugs.chromium.org/p/chromium/issues/detail?id=651904\n\n            this.mainSegmentLoader_.resetEverything(() => {\n                // Since this is not a typical seek, we avoid the seekTo method which can cause segments\n                // from the previously enabled rendition to load before the new playlist has finished loading\n                if (videojs.browser.IE_VERSION || videojs.browser.IS_EDGE) {\n                    this.tech_.setCurrentTime(this.tech_.currentTime() + 0.04);\n                } else {\n                    this.tech_.setCurrentTime(this.tech_.currentTime());\n                }\n            }); // don't need to reset audio as it is reset when media changes\n        }\n        /**\n         * Begin playback.\n         */\n\n        play() {\n            if (this.setupFirstPlay()) {\n                return;\n            }\n            if (this.tech_.ended()) {\n                this.tech_.setCurrentTime(0);\n            }\n            if (this.hasPlayed_) {\n                this.load();\n            }\n            const seekable = this.tech_.seekable(); // if the viewer has paused and we fell out of the live window,\n            // seek forward to the live point\n\n            if (this.tech_.duration() === Infinity) {\n                if (this.tech_.currentTime() < seekable.start(0)) {\n                    return this.tech_.setCurrentTime(seekable.end(seekable.length - 1));\n                }\n            }\n        }\n        /**\n         * Seek to the latest media position if this is a live video and the\n         * player and video are loaded and initialized.\n         */\n\n        setupFirstPlay() {\n            const media = this.mainPlaylistLoader_.media(); // Check that everything is ready to begin buffering for the first call to play\n            //  If 1) there is no active media\n            //     2) the player is paused\n            //     3) the first play has already been setup\n            // then exit early\n\n            if (!media || this.tech_.paused() || this.hasPlayed_) {\n                return false;\n            } // when the video is a live stream\n\n            if (!media.endList) {\n                const seekable = this.seekable();\n                if (!seekable.length) {\n                    // without a seekable range, the player cannot seek to begin buffering at the live\n                    // point\n                    return false;\n                }\n                if (videojs.browser.IE_VERSION && this.tech_.readyState() === 0) {\n                    // IE11 throws an InvalidStateError if you try to set currentTime while the\n                    // readyState is 0, so it must be delayed until the tech fires loadedmetadata.\n                    this.tech_.one('loadedmetadata', () => {\n                        this.trigger('firstplay');\n                        this.tech_.setCurrentTime(seekable.end(0));\n                        this.hasPlayed_ = true;\n                    });\n                    return false;\n                } // trigger firstplay to inform the source handler to ignore the next seek event\n\n                this.trigger('firstplay'); // seek to the live point\n\n                this.tech_.setCurrentTime(seekable.end(0));\n            }\n            this.hasPlayed_ = true; // we can begin loading now that everything is ready\n\n            this.load();\n            return true;\n        }\n        /**\n         * handle the sourceopen event on the MediaSource\n         *\n         * @private\n         */\n\n        handleSourceOpen_() {\n            // Only attempt to create the source buffer if none already exist.\n            // handleSourceOpen is also called when we are \"re-opening\" a source buffer\n            // after `endOfStream` has been called (in response to a seek for instance)\n            this.tryToCreateSourceBuffers_(); // if autoplay is enabled, begin playback. This is duplicative of\n            // code in video.js but is required because play() must be invoked\n            // *after* the media source has opened.\n\n            if (this.tech_.autoplay()) {\n                const playPromise = this.tech_.play(); // Catch/silence error when a pause interrupts a play request\n                // on browsers which return a promise\n\n                if (typeof playPromise !== 'undefined' && typeof playPromise.then === 'function') {\n                    playPromise.then(null, e => {});\n                }\n            }\n            this.trigger('sourceopen');\n        }\n        /**\n         * handle the sourceended event on the MediaSource\n         *\n         * @private\n         */\n\n        handleSourceEnded_() {\n            if (!this.inbandTextTracks_.metadataTrack_) {\n                return;\n            }\n            const cues = this.inbandTextTracks_.metadataTrack_.cues;\n            if (!cues || !cues.length) {\n                return;\n            }\n            const duration = this.duration();\n            cues[cues.length - 1].endTime = isNaN(duration) || Math.abs(duration) === Infinity ? Number.MAX_VALUE : duration;\n        }\n        /**\n         * handle the durationchange event on the MediaSource\n         *\n         * @private\n         */\n\n        handleDurationChange_() {\n            this.tech_.trigger('durationchange');\n        }\n        /**\n         * Calls endOfStream on the media source when all active stream types have called\n         * endOfStream\n         *\n         * @param {string} streamType\n         *        Stream type of the segment loader that called endOfStream\n         * @private\n         */\n\n        onEndOfStream() {\n            let isEndOfStream = this.mainSegmentLoader_.ended_;\n            if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n                const mainMediaInfo = this.mainSegmentLoader_.getCurrentMediaInfo_(); // if the audio playlist loader exists, then alternate audio is active\n\n                if (!mainMediaInfo || mainMediaInfo.hasVideo) {\n                    // if we do not know if the main segment loader contains video yet or if we\n                    // definitively know the main segment loader contains video, then we need to wait\n                    // for both main and audio segment loaders to call endOfStream\n                    isEndOfStream = isEndOfStream && this.audioSegmentLoader_.ended_;\n                } else {\n                    // otherwise just rely on the audio loader\n                    isEndOfStream = this.audioSegmentLoader_.ended_;\n                }\n            }\n            if (!isEndOfStream) {\n                return;\n            }\n            this.stopABRTimer_();\n            this.sourceUpdater_.endOfStream();\n        }\n        /**\n         * Check if a playlist has stopped being updated\n         *\n         * @param {Object} playlist the media playlist object\n         * @return {boolean} whether the playlist has stopped being updated or not\n         */\n\n        stuckAtPlaylistEnd_(playlist) {\n            const seekable = this.seekable();\n            if (!seekable.length) {\n                // playlist doesn't have enough information to determine whether we are stuck\n                return false;\n            }\n            const expired = this.syncController_.getExpiredTime(playlist, this.duration());\n            if (expired === null) {\n                return false;\n            } // does not use the safe live end to calculate playlist end, since we\n            // don't want to say we are stuck while there is still content\n\n            const absolutePlaylistEnd = Vhs$1.Playlist.playlistEnd(playlist, expired);\n            const currentTime = this.tech_.currentTime();\n            const buffered = this.tech_.buffered();\n            if (!buffered.length) {\n                // return true if the playhead reached the absolute end of the playlist\n                return absolutePlaylistEnd - currentTime <= SAFE_TIME_DELTA;\n            }\n            const bufferedEnd = buffered.end(buffered.length - 1); // return true if there is too little buffer left and buffer has reached absolute\n            // end of playlist\n\n            return bufferedEnd - currentTime <= SAFE_TIME_DELTA && absolutePlaylistEnd - bufferedEnd <= SAFE_TIME_DELTA;\n        }\n        /**\n         * Exclude a playlist for a set amount of time, making it unavailable for selection by\n         * the rendition selection algorithm, then force a new playlist (rendition) selection.\n         *\n         * @param {Object=} playlistToExclude\n         *                  the playlist to exclude, defaults to the currently selected playlist\n         * @param {Object=} error\n         *                  an optional error\n         * @param {number=} playlistExclusionDuration\n         *                  an optional number of seconds to exclude the playlist\n         */\n\n        excludePlaylist({\n                            playlistToExclude = this.mainPlaylistLoader_.media(),\n                            error = {},\n                            playlistExclusionDuration\n                        }) {\n            // If the `error` was generated by the playlist loader, it will contain\n            // the playlist we were trying to load (but failed) and that should be\n            // excluded instead of the currently selected playlist which is likely\n            // out-of-date in this scenario\n            playlistToExclude = playlistToExclude || this.mainPlaylistLoader_.media();\n            playlistExclusionDuration = playlistExclusionDuration || error.playlistExclusionDuration || this.playlistExclusionDuration; // If there is no current playlist, then an error occurred while we were\n            // trying to load the main OR while we were disposing of the tech\n\n            if (!playlistToExclude) {\n                this.error = error;\n                if (this.mediaSource.readyState !== 'open') {\n                    this.trigger('error');\n                } else {\n                    this.sourceUpdater_.endOfStream('network');\n                }\n                return;\n            }\n            playlistToExclude.playlistErrors_++;\n            const playlists = this.mainPlaylistLoader_.main.playlists;\n            const enabledPlaylists = playlists.filter(isEnabled);\n            const isFinalRendition = enabledPlaylists.length === 1 && enabledPlaylists[0] === playlistToExclude; // Don't exclude the only playlist unless it was excluded\n            // forever\n\n            if (playlists.length === 1 && playlistExclusionDuration !== Infinity) {\n                videojs.log.warn(`Problem encountered with playlist ${playlistToExclude.id}. ` + 'Trying again since it is the only playlist.');\n                this.tech_.trigger('retryplaylist'); // if this is a final rendition, we should delay\n\n                return this.mainPlaylistLoader_.load(isFinalRendition);\n            }\n            if (isFinalRendition) {\n                // Since we're on the final non-excluded playlist, and we're about to exclude\n                // it, instead of erring the player or retrying this playlist, clear out the current\n                // exclusion list. This allows other playlists to be attempted in case any have been\n                // fixed.\n                let reincluded = false;\n                playlists.forEach(playlist => {\n                    // skip current playlist which is about to be excluded\n                    if (playlist === playlistToExclude) {\n                        return;\n                    }\n                    const excludeUntil = playlist.excludeUntil; // a playlist cannot be reincluded if it wasn't excluded to begin with.\n\n                    if (typeof excludeUntil !== 'undefined' && excludeUntil !== Infinity) {\n                        reincluded = true;\n                        delete playlist.excludeUntil;\n                    }\n                });\n                if (reincluded) {\n                    videojs.log.warn('Removing other playlists from the exclusion list because the last ' + 'rendition is about to be excluded.'); // Technically we are retrying a playlist, in that we are simply retrying a previous\n                    // playlist. This is needed for users relying on the retryplaylist event to catch a\n                    // case where the player might be stuck and looping through \"dead\" playlists.\n\n                    this.tech_.trigger('retryplaylist');\n                }\n            } // Exclude this playlist\n\n            let excludeUntil;\n            if (playlistToExclude.playlistErrors_ > this.maxPlaylistRetries) {\n                excludeUntil = Infinity;\n            } else {\n                excludeUntil = Date.now() + playlistExclusionDuration * 1000;\n            }\n            playlistToExclude.excludeUntil = excludeUntil;\n            if (error.reason) {\n                playlistToExclude.lastExcludeReason_ = error.reason;\n            }\n            this.tech_.trigger('excludeplaylist');\n            this.tech_.trigger({\n                type: 'usage',\n                name: 'vhs-rendition-excluded'\n            }); // TODO: only load a new playlist if we're excluding the current playlist\n            // If this function was called with a playlist that's not the current active playlist\n            // (e.g., media().id !== playlistToExclude.id),\n            // then a new playlist should not be selected and loaded, as there's nothing wrong with the current playlist.\n\n            const nextPlaylist = this.selectPlaylist();\n            if (!nextPlaylist) {\n                this.error = 'Playback cannot continue. No available working or supported playlists.';\n                this.trigger('error');\n                return;\n            }\n            const logFn = error.internal ? this.logger_ : videojs.log.warn;\n            const errorMessage = error.message ? ' ' + error.message : '';\n            logFn(`${error.internal ? 'Internal problem' : 'Problem'} encountered with playlist ${playlistToExclude.id}.` + `${errorMessage} Switching to playlist ${nextPlaylist.id}.`); // if audio group changed reset audio loaders\n\n            if (nextPlaylist.attributes.AUDIO !== playlistToExclude.attributes.AUDIO) {\n                this.delegateLoaders_('audio', ['abort', 'pause']);\n            } // if subtitle group changed reset subtitle loaders\n\n            if (nextPlaylist.attributes.SUBTITLES !== playlistToExclude.attributes.SUBTITLES) {\n                this.delegateLoaders_('subtitle', ['abort', 'pause']);\n            }\n            this.delegateLoaders_('main', ['abort', 'pause']);\n            const delayDuration = nextPlaylist.targetDuration / 2 * 1000 || 5 * 1000;\n            const shouldDelay = typeof nextPlaylist.lastRequest === 'number' && Date.now() - nextPlaylist.lastRequest <= delayDuration; // delay if it's a final rendition or if the last refresh is sooner than half targetDuration\n\n            return this.switchMedia_(nextPlaylist, 'exclude', isFinalRendition || shouldDelay);\n        }\n        /**\n         * Pause all segment/playlist loaders\n         */\n\n        pauseLoading() {\n            this.delegateLoaders_('all', ['abort', 'pause']);\n            this.stopABRTimer_();\n        }\n        /**\n         * Call a set of functions in order on playlist loaders, segment loaders,\n         * or both types of loaders.\n         *\n         * @param {string} filter\n         *        Filter loaders that should call fnNames using a string. Can be:\n         *        * all - run on all loaders\n         *        * audio - run on all audio loaders\n         *        * subtitle - run on all subtitle loaders\n         *        * main - run on the main loaders\n         *\n         * @param {Array|string} fnNames\n         *        A string or array of function names to call.\n         */\n\n        delegateLoaders_(filter, fnNames) {\n            const loaders = [];\n            const dontFilterPlaylist = filter === 'all';\n            if (dontFilterPlaylist || filter === 'main') {\n                loaders.push(this.mainPlaylistLoader_);\n            }\n            const mediaTypes = [];\n            if (dontFilterPlaylist || filter === 'audio') {\n                mediaTypes.push('AUDIO');\n            }\n            if (dontFilterPlaylist || filter === 'subtitle') {\n                mediaTypes.push('CLOSED-CAPTIONS');\n                mediaTypes.push('SUBTITLES');\n            }\n            mediaTypes.forEach(mediaType => {\n                const loader = this.mediaTypes_[mediaType] && this.mediaTypes_[mediaType].activePlaylistLoader;\n                if (loader) {\n                    loaders.push(loader);\n                }\n            });\n            ['main', 'audio', 'subtitle'].forEach(name => {\n                const loader = this[`${name}SegmentLoader_`];\n                if (loader && (filter === name || filter === 'all')) {\n                    loaders.push(loader);\n                }\n            });\n            loaders.forEach(loader => fnNames.forEach(fnName => {\n                if (typeof loader[fnName] === 'function') {\n                    loader[fnName]();\n                }\n            }));\n        }\n        /**\n         * set the current time on all segment loaders\n         *\n         * @param {TimeRange} currentTime the current time to set\n         * @return {TimeRange} the current time\n         */\n\n        setCurrentTime(currentTime) {\n            const buffered = findRange(this.tech_.buffered(), currentTime);\n            if (!(this.mainPlaylistLoader_ && this.mainPlaylistLoader_.media())) {\n                // return immediately if the metadata is not ready yet\n                return 0;\n            } // it's clearly an edge-case but don't thrown an error if asked to\n            // seek within an empty playlist\n\n            if (!this.mainPlaylistLoader_.media().segments) {\n                return 0;\n            } // if the seek location is already buffered, continue buffering as usual\n\n            if (buffered && buffered.length) {\n                return currentTime;\n            } // cancel outstanding requests so we begin buffering at the new\n            // location\n\n            this.mainSegmentLoader_.resetEverything();\n            this.mainSegmentLoader_.abort();\n            if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n                this.audioSegmentLoader_.resetEverything();\n                this.audioSegmentLoader_.abort();\n            }\n            if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {\n                this.subtitleSegmentLoader_.resetEverything();\n                this.subtitleSegmentLoader_.abort();\n            } // start segment loader loading in case they are paused\n\n            this.load();\n        }\n        /**\n         * get the current duration\n         *\n         * @return {TimeRange} the duration\n         */\n\n        duration() {\n            if (!this.mainPlaylistLoader_) {\n                return 0;\n            }\n            const media = this.mainPlaylistLoader_.media();\n            if (!media) {\n                // no playlists loaded yet, so can't determine a duration\n                return 0;\n            } // Don't rely on the media source for duration in the case of a live playlist since\n            // setting the native MediaSource's duration to infinity ends up with consequences to\n            // seekable behavior. See https://github.com/w3c/media-source/issues/5 for details.\n            //\n            // This is resolved in the spec by https://github.com/w3c/media-source/pull/92,\n            // however, few browsers have support for setLiveSeekableRange()\n            // https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/setLiveSeekableRange\n            //\n            // Until a time when the duration of the media source can be set to infinity, and a\n            // seekable range specified across browsers, just return Infinity.\n\n            if (!media.endList) {\n                return Infinity;\n            } // Since this is a VOD video, it is safe to rely on the media source's duration (if\n            // available). If it's not available, fall back to a playlist-calculated estimate.\n\n            if (this.mediaSource) {\n                return this.mediaSource.duration;\n            }\n            return Vhs$1.Playlist.duration(media);\n        }\n        /**\n         * check the seekable range\n         *\n         * @return {TimeRange} the seekable range\n         */\n\n        seekable() {\n            return this.seekable_;\n        }\n        onSyncInfoUpdate_() {\n            let audioSeekable; // TODO check for creation of both source buffers before updating seekable\n            //\n            // A fix was made to this function where a check for\n            // this.sourceUpdater_.hasCreatedSourceBuffers\n            // was added to ensure that both source buffers were created before seekable was\n            // updated. However, it originally had a bug where it was checking for a true and\n            // returning early instead of checking for false. Setting it to check for false to\n            // return early though created other issues. A call to play() would check for seekable\n            // end without verifying that a seekable range was present. In addition, even checking\n            // for that didn't solve some issues, as handleFirstPlay is sometimes worked around\n            // due to a media update calling load on the segment loaders, skipping a seek to live,\n            // thereby starting live streams at the beginning of the stream rather than at the end.\n            //\n            // This conditional should be fixed to wait for the creation of two source buffers at\n            // the same time as the other sections of code are fixed to properly seek to live and\n            // not throw an error due to checking for a seekable end when no seekable range exists.\n            //\n            // For now, fall back to the older behavior, with the understanding that the seekable\n            // range may not be completely correct, leading to a suboptimal initial live point.\n\n            if (!this.mainPlaylistLoader_) {\n                return;\n            }\n            let media = this.mainPlaylistLoader_.media();\n            if (!media) {\n                return;\n            }\n            let expired = this.syncController_.getExpiredTime(media, this.duration());\n            if (expired === null) {\n                // not enough information to update seekable\n                return;\n            }\n            const main = this.mainPlaylistLoader_.main;\n            const mainSeekable = Vhs$1.Playlist.seekable(media, expired, Vhs$1.Playlist.liveEdgeDelay(main, media));\n            if (mainSeekable.length === 0) {\n                return;\n            }\n            if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n                media = this.mediaTypes_.AUDIO.activePlaylistLoader.media();\n                expired = this.syncController_.getExpiredTime(media, this.duration());\n                if (expired === null) {\n                    return;\n                }\n                audioSeekable = Vhs$1.Playlist.seekable(media, expired, Vhs$1.Playlist.liveEdgeDelay(main, media));\n                if (audioSeekable.length === 0) {\n                    return;\n                }\n            }\n            let oldEnd;\n            let oldStart;\n            if (this.seekable_ && this.seekable_.length) {\n                oldEnd = this.seekable_.end(0);\n                oldStart = this.seekable_.start(0);\n            }\n            if (!audioSeekable) {\n                // seekable has been calculated based on buffering video data so it\n                // can be returned directly\n                this.seekable_ = mainSeekable;\n            } else if (audioSeekable.start(0) > mainSeekable.end(0) || mainSeekable.start(0) > audioSeekable.end(0)) {\n                // seekables are pretty far off, rely on main\n                this.seekable_ = mainSeekable;\n            } else {\n                this.seekable_ = createTimeRanges([[audioSeekable.start(0) > mainSeekable.start(0) ? audioSeekable.start(0) : mainSeekable.start(0), audioSeekable.end(0) < mainSeekable.end(0) ? audioSeekable.end(0) : mainSeekable.end(0)]]);\n            } // seekable is the same as last time\n\n            if (this.seekable_ && this.seekable_.length) {\n                if (this.seekable_.end(0) === oldEnd && this.seekable_.start(0) === oldStart) {\n                    return;\n                }\n            }\n            this.logger_(`seekable updated [${printableRange(this.seekable_)}]`);\n            this.tech_.trigger('seekablechanged');\n        }\n        /**\n         * Update the player duration\n         */\n\n        updateDuration(isLive) {\n            if (this.updateDuration_) {\n                this.mediaSource.removeEventListener('sourceopen', this.updateDuration_);\n                this.updateDuration_ = null;\n            }\n            if (this.mediaSource.readyState !== 'open') {\n                this.updateDuration_ = this.updateDuration.bind(this, isLive);\n                this.mediaSource.addEventListener('sourceopen', this.updateDuration_);\n                return;\n            }\n            if (isLive) {\n                const seekable = this.seekable();\n                if (!seekable.length) {\n                    return;\n                } // Even in the case of a live playlist, the native MediaSource's duration should not\n                // be set to Infinity (even though this would be expected for a live playlist), since\n                // setting the native MediaSource's duration to infinity ends up with consequences to\n                // seekable behavior. See https://github.com/w3c/media-source/issues/5 for details.\n                //\n                // This is resolved in the spec by https://github.com/w3c/media-source/pull/92,\n                // however, few browsers have support for setLiveSeekableRange()\n                // https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/setLiveSeekableRange\n                //\n                // Until a time when the duration of the media source can be set to infinity, and a\n                // seekable range specified across browsers, the duration should be greater than or\n                // equal to the last possible seekable value.\n                // MediaSource duration starts as NaN\n                // It is possible (and probable) that this case will never be reached for many\n                // sources, since the MediaSource reports duration as the highest value without\n                // accounting for timestamp offset. For example, if the timestamp offset is -100 and\n                // we buffered times 0 to 100 with real times of 100 to 200, even though current\n                // time will be between 0 and 100, the native media source may report the duration\n                // as 200. However, since we report duration separate from the media source (as\n                // Infinity), and as long as the native media source duration value is greater than\n                // our reported seekable range, seeks will work as expected. The large number as\n                // duration for live is actually a strategy used by some players to work around the\n                // issue of live seekable ranges cited above.\n\n                if (isNaN(this.mediaSource.duration) || this.mediaSource.duration < seekable.end(seekable.length - 1)) {\n                    this.sourceUpdater_.setDuration(seekable.end(seekable.length - 1));\n                }\n                return;\n            }\n            const buffered = this.tech_.buffered();\n            let duration = Vhs$1.Playlist.duration(this.mainPlaylistLoader_.media());\n            if (buffered.length > 0) {\n                duration = Math.max(duration, buffered.end(buffered.length - 1));\n            }\n            if (this.mediaSource.duration !== duration) {\n                this.sourceUpdater_.setDuration(duration);\n            }\n        }\n        /**\n         * dispose of the PlaylistController and everything\n         * that it controls\n         */\n\n        dispose() {\n            this.trigger('dispose');\n            this.decrypter_.terminate();\n            this.mainPlaylistLoader_.dispose();\n            this.mainSegmentLoader_.dispose();\n            if (this.loadOnPlay_) {\n                this.tech_.off('play', this.loadOnPlay_);\n            }\n            ['AUDIO', 'SUBTITLES'].forEach(type => {\n                const groups = this.mediaTypes_[type].groups;\n                for (const id in groups) {\n                    groups[id].forEach(group => {\n                        if (group.playlistLoader) {\n                            group.playlistLoader.dispose();\n                        }\n                    });\n                }\n            });\n            this.audioSegmentLoader_.dispose();\n            this.subtitleSegmentLoader_.dispose();\n            this.sourceUpdater_.dispose();\n            this.timelineChangeController_.dispose();\n            this.stopABRTimer_();\n            if (this.updateDuration_) {\n                this.mediaSource.removeEventListener('sourceopen', this.updateDuration_);\n            }\n            this.mediaSource.removeEventListener('durationchange', this.handleDurationChange_); // load the media source into the player\n\n            this.mediaSource.removeEventListener('sourceopen', this.handleSourceOpen_);\n            this.mediaSource.removeEventListener('sourceended', this.handleSourceEnded_);\n            this.off();\n        }\n        /**\n         * return the main playlist object if we have one\n         *\n         * @return {Object} the main playlist object that we parsed\n         */\n\n        main() {\n            return this.mainPlaylistLoader_.main;\n        }\n        /**\n         * return the currently selected playlist\n         *\n         * @return {Object} the currently selected playlist object that we parsed\n         */\n\n        media() {\n            // playlist loader will not return media if it has not been fully loaded\n            return this.mainPlaylistLoader_.media() || this.initialMedia_;\n        }\n        areMediaTypesKnown_() {\n            const usingAudioLoader = !!this.mediaTypes_.AUDIO.activePlaylistLoader;\n            const hasMainMediaInfo = !!this.mainSegmentLoader_.getCurrentMediaInfo_(); // if we are not using an audio loader, then we have audio media info\n            // otherwise check on the segment loader.\n\n            const hasAudioMediaInfo = !usingAudioLoader ? true : !!this.audioSegmentLoader_.getCurrentMediaInfo_(); // one or both loaders has not loaded sufficently to get codecs\n\n            if (!hasMainMediaInfo || !hasAudioMediaInfo) {\n                return false;\n            }\n            return true;\n        }\n        getCodecsOrExclude_() {\n            const media = {\n                main: this.mainSegmentLoader_.getCurrentMediaInfo_() || {},\n                audio: this.audioSegmentLoader_.getCurrentMediaInfo_() || {}\n            };\n            const playlist = this.mainSegmentLoader_.getPendingSegmentPlaylist() || this.media(); // set \"main\" media equal to video\n\n            media.video = media.main;\n            const playlistCodecs = codecsForPlaylist(this.main(), playlist);\n            const codecs = {};\n            const usingAudioLoader = !!this.mediaTypes_.AUDIO.activePlaylistLoader;\n            if (media.main.hasVideo) {\n                codecs.video = playlistCodecs.video || media.main.videoCodec || DEFAULT_VIDEO_CODEC;\n            }\n            if (media.main.isMuxed) {\n                codecs.video += `,${playlistCodecs.audio || media.main.audioCodec || DEFAULT_AUDIO_CODEC}`;\n            }\n            if (media.main.hasAudio && !media.main.isMuxed || media.audio.hasAudio || usingAudioLoader) {\n                codecs.audio = playlistCodecs.audio || media.main.audioCodec || media.audio.audioCodec || DEFAULT_AUDIO_CODEC; // set audio isFmp4 so we use the correct \"supports\" function below\n\n                media.audio.isFmp4 = media.main.hasAudio && !media.main.isMuxed ? media.main.isFmp4 : media.audio.isFmp4;\n            } // no codecs, no playback.\n\n            if (!codecs.audio && !codecs.video) {\n                this.excludePlaylist({\n                    playlistToExclude: playlist,\n                    error: {\n                        message: 'Could not determine codecs for playlist.'\n                    },\n                    playlistExclusionDuration: Infinity\n                });\n                return;\n            } // fmp4 relies on browser support, while ts relies on muxer support\n\n            const supportFunction = (isFmp4, codec) => isFmp4 ? browserSupportsCodec(codec) : muxerSupportsCodec(codec);\n            const unsupportedCodecs = {};\n            let unsupportedAudio;\n            ['video', 'audio'].forEach(function (type) {\n                if (codecs.hasOwnProperty(type) && !supportFunction(media[type].isFmp4, codecs[type])) {\n                    const supporter = media[type].isFmp4 ? 'browser' : 'muxer';\n                    unsupportedCodecs[supporter] = unsupportedCodecs[supporter] || [];\n                    unsupportedCodecs[supporter].push(codecs[type]);\n                    if (type === 'audio') {\n                        unsupportedAudio = supporter;\n                    }\n                }\n            });\n            if (usingAudioLoader && unsupportedAudio && playlist.attributes.AUDIO) {\n                const audioGroup = playlist.attributes.AUDIO;\n                this.main().playlists.forEach(variant => {\n                    const variantAudioGroup = variant.attributes && variant.attributes.AUDIO;\n                    if (variantAudioGroup === audioGroup && variant !== playlist) {\n                        variant.excludeUntil = Infinity;\n                    }\n                });\n                this.logger_(`excluding audio group ${audioGroup} as ${unsupportedAudio} does not support codec(s): \"${codecs.audio}\"`);\n            } // if we have any unsupported codecs exclude this playlist.\n\n            if (Object.keys(unsupportedCodecs).length) {\n                const message = Object.keys(unsupportedCodecs).reduce((acc, supporter) => {\n                    if (acc) {\n                        acc += ', ';\n                    }\n                    acc += `${supporter} does not support codec(s): \"${unsupportedCodecs[supporter].join(',')}\"`;\n                    return acc;\n                }, '') + '.';\n                this.excludePlaylist({\n                    playlistToExclude: playlist,\n                    error: {\n                        internal: true,\n                        message\n                    },\n                    playlistExclusionDuration: Infinity\n                });\n                return;\n            } // check if codec switching is happening\n\n            if (this.sourceUpdater_.hasCreatedSourceBuffers() && !this.sourceUpdater_.canChangeType()) {\n                const switchMessages = [];\n                ['video', 'audio'].forEach(type => {\n                    const newCodec = (parseCodecs(this.sourceUpdater_.codecs[type] || '')[0] || {}).type;\n                    const oldCodec = (parseCodecs(codecs[type] || '')[0] || {}).type;\n                    if (newCodec && oldCodec && newCodec.toLowerCase() !== oldCodec.toLowerCase()) {\n                        switchMessages.push(`\"${this.sourceUpdater_.codecs[type]}\" -> \"${codecs[type]}\"`);\n                    }\n                });\n                if (switchMessages.length) {\n                    this.excludePlaylist({\n                        playlistToExclude: playlist,\n                        error: {\n                            message: `Codec switching not supported: ${switchMessages.join(', ')}.`,\n                            internal: true\n                        },\n                        playlistExclusionDuration: Infinity\n                    });\n                    return;\n                }\n            } // TODO: when using the muxer shouldn't we just return\n            // the codecs that the muxer outputs?\n\n            return codecs;\n        }\n        /**\n         * Create source buffers and exlude any incompatible renditions.\n         *\n         * @private\n         */\n\n        tryToCreateSourceBuffers_() {\n            // media source is not ready yet or sourceBuffers are already\n            // created.\n            if (this.mediaSource.readyState !== 'open' || this.sourceUpdater_.hasCreatedSourceBuffers()) {\n                return;\n            }\n            if (!this.areMediaTypesKnown_()) {\n                return;\n            }\n            const codecs = this.getCodecsOrExclude_(); // no codecs means that the playlist was excluded\n\n            if (!codecs) {\n                return;\n            }\n            this.sourceUpdater_.createSourceBuffers(codecs);\n            const codecString = [codecs.video, codecs.audio].filter(Boolean).join(',');\n            this.excludeIncompatibleVariants_(codecString);\n        }\n        /**\n         * Excludes playlists with codecs that are unsupported by the muxer and browser.\n         */\n\n        excludeUnsupportedVariants_() {\n            const playlists = this.main().playlists;\n            const ids = []; // TODO: why don't we have a property to loop through all\n            // playlist? Why did we ever mix indexes and keys?\n\n            Object.keys(playlists).forEach(key => {\n                const variant = playlists[key]; // check if we already processed this playlist.\n\n                if (ids.indexOf(variant.id) !== -1) {\n                    return;\n                }\n                ids.push(variant.id);\n                const codecs = codecsForPlaylist(this.main, variant);\n                const unsupported = [];\n                if (codecs.audio && !muxerSupportsCodec(codecs.audio) && !browserSupportsCodec(codecs.audio)) {\n                    unsupported.push(`audio codec ${codecs.audio}`);\n                }\n                if (codecs.video && !muxerSupportsCodec(codecs.video) && !browserSupportsCodec(codecs.video)) {\n                    unsupported.push(`video codec ${codecs.video}`);\n                }\n                if (codecs.text && codecs.text === 'stpp.ttml.im1t') {\n                    unsupported.push(`text codec ${codecs.text}`);\n                }\n                if (unsupported.length) {\n                    variant.excludeUntil = Infinity;\n                    this.logger_(`excluding ${variant.id} for unsupported: ${unsupported.join(', ')}`);\n                }\n            });\n        }\n        /**\n         * Exclude playlists that are known to be codec or\n         * stream-incompatible with the SourceBuffer configuration. For\n         * instance, Media Source Extensions would cause the video element to\n         * stall waiting for video data if you switched from a variant with\n         * video and audio to an audio-only one.\n         *\n         * @param {Object} media a media playlist compatible with the current\n         * set of SourceBuffers. Variants in the current main playlist that\n         * do not appear to have compatible codec or stream configurations\n         * will be excluded from the default playlist selection algorithm\n         * indefinitely.\n         * @private\n         */\n\n        excludeIncompatibleVariants_(codecString) {\n            const ids = [];\n            const playlists = this.main().playlists;\n            const codecs = unwrapCodecList(parseCodecs(codecString));\n            const codecCount_ = codecCount(codecs);\n            const videoDetails = codecs.video && parseCodecs(codecs.video)[0] || null;\n            const audioDetails = codecs.audio && parseCodecs(codecs.audio)[0] || null;\n            Object.keys(playlists).forEach(key => {\n                const variant = playlists[key]; // check if we already processed this playlist.\n                // or it if it is already excluded forever.\n\n                if (ids.indexOf(variant.id) !== -1 || variant.excludeUntil === Infinity) {\n                    return;\n                }\n                ids.push(variant.id);\n                const exclusionReasons = []; // get codecs from the playlist for this variant\n\n                const variantCodecs = codecsForPlaylist(this.mainPlaylistLoader_.main, variant);\n                const variantCodecCount = codecCount(variantCodecs); // if no codecs are listed, we cannot determine that this\n                // variant is incompatible. Wait for mux.js to probe\n\n                if (!variantCodecs.audio && !variantCodecs.video) {\n                    return;\n                } // TODO: we can support this by removing the\n                // old media source and creating a new one, but it will take some work.\n                // The number of streams cannot change\n\n                if (variantCodecCount !== codecCount_) {\n                    exclusionReasons.push(`codec count \"${variantCodecCount}\" !== \"${codecCount_}\"`);\n                } // only exclude playlists by codec change, if codecs cannot switch\n                // during playback.\n\n                if (!this.sourceUpdater_.canChangeType()) {\n                    const variantVideoDetails = variantCodecs.video && parseCodecs(variantCodecs.video)[0] || null;\n                    const variantAudioDetails = variantCodecs.audio && parseCodecs(variantCodecs.audio)[0] || null; // the video codec cannot change\n\n                    if (variantVideoDetails && videoDetails && variantVideoDetails.type.toLowerCase() !== videoDetails.type.toLowerCase()) {\n                        exclusionReasons.push(`video codec \"${variantVideoDetails.type}\" !== \"${videoDetails.type}\"`);\n                    } // the audio codec cannot change\n\n                    if (variantAudioDetails && audioDetails && variantAudioDetails.type.toLowerCase() !== audioDetails.type.toLowerCase()) {\n                        exclusionReasons.push(`audio codec \"${variantAudioDetails.type}\" !== \"${audioDetails.type}\"`);\n                    }\n                }\n                if (exclusionReasons.length) {\n                    variant.excludeUntil = Infinity;\n                    this.logger_(`excluding ${variant.id}: ${exclusionReasons.join(' && ')}`);\n                }\n            });\n        }\n        updateAdCues_(media) {\n            let offset = 0;\n            const seekable = this.seekable();\n            if (seekable.length) {\n                offset = seekable.start(0);\n            }\n            updateAdCues(media, this.cueTagsTrack_, offset);\n        }\n        /**\n         * Calculates the desired forward buffer length based on current time\n         *\n         * @return {number} Desired forward buffer length in seconds\n         */\n\n        goalBufferLength() {\n            const currentTime = this.tech_.currentTime();\n            const initial = Config.GOAL_BUFFER_LENGTH;\n            const rate = Config.GOAL_BUFFER_LENGTH_RATE;\n            const max = Math.max(initial, Config.MAX_GOAL_BUFFER_LENGTH);\n            return Math.min(initial + currentTime * rate, max);\n        }\n        /**\n         * Calculates the desired buffer low water line based on current time\n         *\n         * @return {number} Desired buffer low water line in seconds\n         */\n\n        bufferLowWaterLine() {\n            const currentTime = this.tech_.currentTime();\n            const initial = Config.BUFFER_LOW_WATER_LINE;\n            const rate = Config.BUFFER_LOW_WATER_LINE_RATE;\n            const max = Math.max(initial, Config.MAX_BUFFER_LOW_WATER_LINE);\n            const newMax = Math.max(initial, Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE);\n            return Math.min(initial + currentTime * rate, this.bufferBasedABR ? newMax : max);\n        }\n        bufferHighWaterLine() {\n            return Config.BUFFER_HIGH_WATER_LINE;\n        }\n    }\n\n    /**\n     * Returns a function that acts as the Enable/disable playlist function.\n     *\n     * @param {PlaylistLoader} loader - The main playlist loader\n     * @param {string} playlistID - id of the playlist\n     * @param {Function} changePlaylistFn - A function to be called after a\n     * playlist's enabled-state has been changed. Will NOT be called if a\n     * playlist's enabled-state is unchanged\n     * @param {boolean=} enable - Value to set the playlist enabled-state to\n     * or if undefined returns the current enabled-state for the playlist\n     * @return {Function} Function for setting/getting enabled\n     */\n\n    const enableFunction = (loader, playlistID, changePlaylistFn) => enable => {\n        const playlist = loader.main.playlists[playlistID];\n        const incompatible = isIncompatible(playlist);\n        const currentlyEnabled = isEnabled(playlist);\n        if (typeof enable === 'undefined') {\n            return currentlyEnabled;\n        }\n        if (enable) {\n            delete playlist.disabled;\n        } else {\n            playlist.disabled = true;\n        }\n        if (enable !== currentlyEnabled && !incompatible) {\n            // Ensure the outside world knows about our changes\n            changePlaylistFn();\n            if (enable) {\n                loader.trigger('renditionenabled');\n            } else {\n                loader.trigger('renditiondisabled');\n            }\n        }\n        return enable;\n    };\n    /**\n     * The representation object encapsulates the publicly visible information\n     * in a media playlist along with a setter/getter-type function (enabled)\n     * for changing the enabled-state of a particular playlist entry\n     *\n     * @class Representation\n     */\n\n    class Representation {\n        constructor(vhsHandler, playlist, id) {\n            const {\n                playlistController_: pc\n            } = vhsHandler;\n            const qualityChangeFunction = pc.fastQualityChange_.bind(pc); // some playlist attributes are optional\n\n            if (playlist.attributes) {\n                const resolution = playlist.attributes.RESOLUTION;\n                this.width = resolution && resolution.width;\n                this.height = resolution && resolution.height;\n                this.bandwidth = playlist.attributes.BANDWIDTH;\n                this.frameRate = playlist.attributes['FRAME-RATE'];\n            }\n            this.codecs = codecsForPlaylist(pc.main(), playlist);\n            this.playlist = playlist; // The id is simply the ordinality of the media playlist\n            // within the main playlist\n\n            this.id = id; // Partially-apply the enableFunction to create a playlist-\n            // specific variant\n\n            this.enabled = enableFunction(vhsHandler.playlists, playlist.id, qualityChangeFunction);\n        }\n    }\n    /**\n     * A mixin function that adds the `representations` api to an instance\n     * of the VhsHandler class\n     *\n     * @param {VhsHandler} vhsHandler - An instance of VhsHandler to add the\n     * representation API into\n     */\n\n    const renditionSelectionMixin = function (vhsHandler) {\n        // Add a single API-specific function to the VhsHandler instance\n        vhsHandler.representations = () => {\n            const main = vhsHandler.playlistController_.main();\n            const playlists = isAudioOnly(main) ? vhsHandler.playlistController_.getAudioTrackPlaylists_() : main.playlists;\n            if (!playlists) {\n                return [];\n            }\n            return playlists.filter(media => !isIncompatible(media)).map((e, i) => new Representation(vhsHandler, e, e.id));\n        };\n    };\n\n    /**\n     * @file playback-watcher.js\n     *\n     * Playback starts, and now my watch begins. It shall not end until my death. I shall\n     * take no wait, hold no uncleared timeouts, father no bad seeks. I shall wear no crowns\n     * and win no glory. I shall live and die at my post. I am the corrector of the underflow.\n     * I am the watcher of gaps. I am the shield that guards the realms of seekable. I pledge\n     * my life and honor to the Playback Watch, for this Player and all the Players to come.\n     */\n\n    const timerCancelEvents = ['seeking', 'seeked', 'pause', 'playing', 'error'];\n    /**\n     * @class PlaybackWatcher\n     */\n\n    class PlaybackWatcher {\n        /**\n         * Represents an PlaybackWatcher object.\n         *\n         * @class\n         * @param {Object} options an object that includes the tech and settings\n         */\n        constructor(options) {\n            this.playlistController_ = options.playlistController;\n            this.tech_ = options.tech;\n            this.seekable = options.seekable;\n            this.allowSeeksWithinUnsafeLiveWindow = options.allowSeeksWithinUnsafeLiveWindow;\n            this.liveRangeSafeTimeDelta = options.liveRangeSafeTimeDelta;\n            this.media = options.media;\n            this.consecutiveUpdates = 0;\n            this.lastRecordedTime = null;\n            this.checkCurrentTimeTimeout_ = null;\n            this.logger_ = logger('PlaybackWatcher');\n            this.logger_('initialize');\n            const playHandler = () => this.monitorCurrentTime_();\n            const canPlayHandler = () => this.monitorCurrentTime_();\n            const waitingHandler = () => this.techWaiting_();\n            const cancelTimerHandler = () => this.resetTimeUpdate_();\n            const pc = this.playlistController_;\n            const loaderTypes = ['main', 'subtitle', 'audio'];\n            const loaderChecks = {};\n            loaderTypes.forEach(type => {\n                loaderChecks[type] = {\n                    reset: () => this.resetSegmentDownloads_(type),\n                    updateend: () => this.checkSegmentDownloads_(type)\n                };\n                pc[`${type}SegmentLoader_`].on('appendsdone', loaderChecks[type].updateend); // If a rendition switch happens during a playback stall where the buffer\n                // isn't changing we want to reset. We cannot assume that the new rendition\n                // will also be stalled, until after new appends.\n\n                pc[`${type}SegmentLoader_`].on('playlistupdate', loaderChecks[type].reset); // Playback stalls should not be detected right after seeking.\n                // This prevents one segment playlists (single vtt or single segment content)\n                // from being detected as stalling. As the buffer will not change in those cases, since\n                // the buffer is the entire video duration.\n\n                this.tech_.on(['seeked', 'seeking'], loaderChecks[type].reset);\n            });\n            /**\n             * We check if a seek was into a gap through the following steps:\n             * 1. We get a seeking event and we do not get a seeked event. This means that\n             *    a seek was attempted but not completed.\n             * 2. We run `fixesBadSeeks_` on segment loader appends. This means that we already\n             *    removed everything from our buffer and appended a segment, and should be ready\n             *    to check for gaps.\n             */\n\n            const setSeekingHandlers = fn => {\n                ['main', 'audio'].forEach(type => {\n                    pc[`${type}SegmentLoader_`][fn]('appended', this.seekingAppendCheck_);\n                });\n            };\n            this.seekingAppendCheck_ = () => {\n                if (this.fixesBadSeeks_()) {\n                    this.consecutiveUpdates = 0;\n                    this.lastRecordedTime = this.tech_.currentTime();\n                    setSeekingHandlers('off');\n                }\n            };\n            this.clearSeekingAppendCheck_ = () => setSeekingHandlers('off');\n            this.watchForBadSeeking_ = () => {\n                this.clearSeekingAppendCheck_();\n                setSeekingHandlers('on');\n            };\n            this.tech_.on('seeked', this.clearSeekingAppendCheck_);\n            this.tech_.on('seeking', this.watchForBadSeeking_);\n            this.tech_.on('waiting', waitingHandler);\n            this.tech_.on(timerCancelEvents, cancelTimerHandler);\n            this.tech_.on('canplay', canPlayHandler);\n            /*\n        An edge case exists that results in gaps not being skipped when they exist at the beginning of a stream. This case\n        is surfaced in one of two ways:\n         1)  The `waiting` event is fired before the player has buffered content, making it impossible\n            to find or skip the gap. The `waiting` event is followed by a `play` event. On first play\n            we can check if playback is stalled due to a gap, and skip the gap if necessary.\n        2)  A source with a gap at the beginning of the stream is loaded programatically while the player\n            is in a playing state. To catch this case, it's important that our one-time play listener is setup\n            even if the player is in a playing state\n      */\n\n            this.tech_.one('play', playHandler); // Define the dispose function to clean up our events\n\n            this.dispose = () => {\n                this.clearSeekingAppendCheck_();\n                this.logger_('dispose');\n                this.tech_.off('waiting', waitingHandler);\n                this.tech_.off(timerCancelEvents, cancelTimerHandler);\n                this.tech_.off('canplay', canPlayHandler);\n                this.tech_.off('play', playHandler);\n                this.tech_.off('seeking', this.watchForBadSeeking_);\n                this.tech_.off('seeked', this.clearSeekingAppendCheck_);\n                loaderTypes.forEach(type => {\n                    pc[`${type}SegmentLoader_`].off('appendsdone', loaderChecks[type].updateend);\n                    pc[`${type}SegmentLoader_`].off('playlistupdate', loaderChecks[type].reset);\n                    this.tech_.off(['seeked', 'seeking'], loaderChecks[type].reset);\n                });\n                if (this.checkCurrentTimeTimeout_) {\n                    window.clearTimeout(this.checkCurrentTimeTimeout_);\n                }\n                this.resetTimeUpdate_();\n            };\n        }\n        /**\n         * Periodically check current time to see if playback stopped\n         *\n         * @private\n         */\n\n        monitorCurrentTime_() {\n            this.checkCurrentTime_();\n            if (this.checkCurrentTimeTimeout_) {\n                window.clearTimeout(this.checkCurrentTimeTimeout_);\n            } // 42 = 24 fps // 250 is what Webkit uses // FF uses 15\n\n            this.checkCurrentTimeTimeout_ = window.setTimeout(this.monitorCurrentTime_.bind(this), 250);\n        }\n        /**\n         * Reset stalled download stats for a specific type of loader\n         *\n         * @param {string} type\n         *        The segment loader type to check.\n         *\n         * @listens SegmentLoader#playlistupdate\n         * @listens Tech#seeking\n         * @listens Tech#seeked\n         */\n\n        resetSegmentDownloads_(type) {\n            const loader = this.playlistController_[`${type}SegmentLoader_`];\n            if (this[`${type}StalledDownloads_`] > 0) {\n                this.logger_(`resetting possible stalled download count for ${type} loader`);\n            }\n            this[`${type}StalledDownloads_`] = 0;\n            this[`${type}Buffered_`] = loader.buffered_();\n        }\n        /**\n         * Checks on every segment `appendsdone` to see\n         * if segment appends are making progress. If they are not\n         * and we are still downloading bytes. We exclude the playlist.\n         *\n         * @param {string} type\n         *        The segment loader type to check.\n         *\n         * @listens SegmentLoader#appendsdone\n         */\n\n        checkSegmentDownloads_(type) {\n            const pc = this.playlistController_;\n            const loader = pc[`${type}SegmentLoader_`];\n            const buffered = loader.buffered_();\n            const isBufferedDifferent = isRangeDifferent(this[`${type}Buffered_`], buffered);\n            this[`${type}Buffered_`] = buffered; // if another watcher is going to fix the issue or\n            // the buffered value for this loader changed\n            // appends are working\n\n            if (isBufferedDifferent) {\n                this.resetSegmentDownloads_(type);\n                return;\n            }\n            this[`${type}StalledDownloads_`]++;\n            this.logger_(`found #${this[`${type}StalledDownloads_`]} ${type} appends that did not increase buffer (possible stalled download)`, {\n                playlistId: loader.playlist_ && loader.playlist_.id,\n                buffered: timeRangesToArray(buffered)\n            }); // after 10 possibly stalled appends with no reset, exclude\n\n            if (this[`${type}StalledDownloads_`] < 10) {\n                return;\n            }\n            this.logger_(`${type} loader stalled download exclusion`);\n            this.resetSegmentDownloads_(type);\n            this.tech_.trigger({\n                type: 'usage',\n                name: `vhs-${type}-download-exclusion`\n            });\n            if (type === 'subtitle') {\n                return;\n            } // TODO: should we exclude audio tracks rather than main tracks\n            // when type is audio?\n\n            pc.excludePlaylist({\n                error: {\n                    message: `Excessive ${type} segment downloading detected.`\n                },\n                playlistExclusionDuration: Infinity\n            });\n        }\n        /**\n         * The purpose of this function is to emulate the \"waiting\" event on\n         * browsers that do not emit it when they are waiting for more\n         * data to continue playback\n         *\n         * @private\n         */\n\n        checkCurrentTime_() {\n            if (this.tech_.paused() || this.tech_.seeking()) {\n                return;\n            }\n            const currentTime = this.tech_.currentTime();\n            const buffered = this.tech_.buffered();\n            if (this.lastRecordedTime === currentTime && (!buffered.length || currentTime + SAFE_TIME_DELTA >= buffered.end(buffered.length - 1))) {\n                // If current time is at the end of the final buffered region, then any playback\n                // stall is most likely caused by buffering in a low bandwidth environment. The tech\n                // should fire a `waiting` event in this scenario, but due to browser and tech\n                // inconsistencies. Calling `techWaiting_` here allows us to simulate\n                // responding to a native `waiting` event when the tech fails to emit one.\n                return this.techWaiting_();\n            }\n            if (this.consecutiveUpdates >= 5 && currentTime === this.lastRecordedTime) {\n                this.consecutiveUpdates++;\n                this.waiting_();\n            } else if (currentTime === this.lastRecordedTime) {\n                this.consecutiveUpdates++;\n            } else {\n                this.consecutiveUpdates = 0;\n                this.lastRecordedTime = currentTime;\n            }\n        }\n        /**\n         * Resets the 'timeupdate' mechanism designed to detect that we are stalled\n         *\n         * @private\n         */\n\n        resetTimeUpdate_() {\n            this.consecutiveUpdates = 0;\n        }\n        /**\n         * Fixes situations where there's a bad seek\n         *\n         * @return {boolean} whether an action was taken to fix the seek\n         * @private\n         */\n\n        fixesBadSeeks_() {\n            const seeking = this.tech_.seeking();\n            if (!seeking) {\n                return false;\n            } // TODO: It's possible that these seekable checks should be moved out of this function\n            // and into a function that runs on seekablechange. It's also possible that we only need\n            // afterSeekableWindow as the buffered check at the bottom is good enough to handle before\n            // seekable range.\n\n            const seekable = this.seekable();\n            const currentTime = this.tech_.currentTime();\n            const isAfterSeekableRange = this.afterSeekableWindow_(seekable, currentTime, this.media(), this.allowSeeksWithinUnsafeLiveWindow);\n            let seekTo;\n            if (isAfterSeekableRange) {\n                const seekableEnd = seekable.end(seekable.length - 1); // sync to live point (if VOD, our seekable was updated and we're simply adjusting)\n\n                seekTo = seekableEnd;\n            }\n            if (this.beforeSeekableWindow_(seekable, currentTime)) {\n                const seekableStart = seekable.start(0); // sync to the beginning of the live window\n                // provide a buffer of .1 seconds to handle rounding/imprecise numbers\n\n                seekTo = seekableStart + (\n                    // if the playlist is too short and the seekable range is an exact time (can\n                    // happen in live with a 3 segment playlist), then don't use a time delta\n                    seekableStart === seekable.end(0) ? 0 : SAFE_TIME_DELTA);\n            }\n            if (typeof seekTo !== 'undefined') {\n                this.logger_(`Trying to seek outside of seekable at time ${currentTime} with ` + `seekable range ${printableRange(seekable)}. Seeking to ` + `${seekTo}.`);\n                this.tech_.setCurrentTime(seekTo);\n                return true;\n            }\n            const sourceUpdater = this.playlistController_.sourceUpdater_;\n            const buffered = this.tech_.buffered();\n            const audioBuffered = sourceUpdater.audioBuffer ? sourceUpdater.audioBuffered() : null;\n            const videoBuffered = sourceUpdater.videoBuffer ? sourceUpdater.videoBuffered() : null;\n            const media = this.media(); // verify that at least two segment durations or one part duration have been\n            // appended before checking for a gap.\n\n            const minAppendedDuration = media.partTargetDuration ? media.partTargetDuration : (media.targetDuration - TIME_FUDGE_FACTOR) * 2; // verify that at least two segment durations have been\n            // appended before checking for a gap.\n\n            const bufferedToCheck = [audioBuffered, videoBuffered];\n            for (let i = 0; i < bufferedToCheck.length; i++) {\n                // skip null buffered\n                if (!bufferedToCheck[i]) {\n                    continue;\n                }\n                const timeAhead = timeAheadOf(bufferedToCheck[i], currentTime); // if we are less than two video/audio segment durations or one part\n                // duration behind we haven't appended enough to call this a bad seek.\n\n                if (timeAhead < minAppendedDuration) {\n                    return false;\n                }\n            }\n            const nextRange = findNextRange(buffered, currentTime); // we have appended enough content, but we don't have anything buffered\n            // to seek over the gap\n\n            if (nextRange.length === 0) {\n                return false;\n            }\n            seekTo = nextRange.start(0) + SAFE_TIME_DELTA;\n            this.logger_(`Buffered region starts (${nextRange.start(0)}) ` + ` just beyond seek point (${currentTime}). Seeking to ${seekTo}.`);\n            this.tech_.setCurrentTime(seekTo);\n            return true;\n        }\n        /**\n         * Handler for situations when we determine the player is waiting.\n         *\n         * @private\n         */\n\n        waiting_() {\n            if (this.techWaiting_()) {\n                return;\n            } // All tech waiting checks failed. Use last resort correction\n\n            const currentTime = this.tech_.currentTime();\n            const buffered = this.tech_.buffered();\n            const currentRange = findRange(buffered, currentTime); // Sometimes the player can stall for unknown reasons within a contiguous buffered\n            // region with no indication that anything is amiss (seen in Firefox). Seeking to\n            // currentTime is usually enough to kickstart the player. This checks that the player\n            // is currently within a buffered region before attempting a corrective seek.\n            // Chrome does not appear to continue `timeupdate` events after a `waiting` event\n            // until there is ~ 3 seconds of forward buffer available. PlaybackWatcher should also\n            // make sure there is ~3 seconds of forward buffer before taking any corrective action\n            // to avoid triggering an `unknownwaiting` event when the network is slow.\n\n            if (currentRange.length && currentTime + 3 <= currentRange.end(0)) {\n                this.resetTimeUpdate_();\n                this.tech_.setCurrentTime(currentTime);\n                this.logger_(`Stopped at ${currentTime} while inside a buffered region ` + `[${currentRange.start(0)} -> ${currentRange.end(0)}]. Attempting to resume ` + 'playback by seeking to the current time.'); // unknown waiting corrections may be useful for monitoring QoS\n\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-unknown-waiting'\n                });\n                return;\n            }\n        }\n        /**\n         * Handler for situations when the tech fires a `waiting` event\n         *\n         * @return {boolean}\n         *         True if an action (or none) was needed to correct the waiting. False if no\n         *         checks passed\n         * @private\n         */\n\n        techWaiting_() {\n            const seekable = this.seekable();\n            const currentTime = this.tech_.currentTime();\n            if (this.tech_.seeking()) {\n                // Tech is seeking or already waiting on another action, no action needed\n                return true;\n            }\n            if (this.beforeSeekableWindow_(seekable, currentTime)) {\n                const livePoint = seekable.end(seekable.length - 1);\n                this.logger_(`Fell out of live window at time ${currentTime}. Seeking to ` + `live point (seekable end) ${livePoint}`);\n                this.resetTimeUpdate_();\n                this.tech_.setCurrentTime(livePoint); // live window resyncs may be useful for monitoring QoS\n\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-live-resync'\n                });\n                return true;\n            }\n            const sourceUpdater = this.tech_.vhs.playlistController_.sourceUpdater_;\n            const buffered = this.tech_.buffered();\n            const videoUnderflow = this.videoUnderflow_({\n                audioBuffered: sourceUpdater.audioBuffered(),\n                videoBuffered: sourceUpdater.videoBuffered(),\n                currentTime\n            });\n            if (videoUnderflow) {\n                // Even though the video underflowed and was stuck in a gap, the audio overplayed\n                // the gap, leading currentTime into a buffered range. Seeking to currentTime\n                // allows the video to catch up to the audio position without losing any audio\n                // (only suffering ~3 seconds of frozen video and a pause in audio playback).\n                this.resetTimeUpdate_();\n                this.tech_.setCurrentTime(currentTime); // video underflow may be useful for monitoring QoS\n\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-video-underflow'\n                });\n                return true;\n            }\n            const nextRange = findNextRange(buffered, currentTime); // check for gap\n\n            if (nextRange.length > 0) {\n                this.logger_(`Stopped at ${currentTime} and seeking to ${nextRange.start(0)}`);\n                this.resetTimeUpdate_();\n                this.skipTheGap_(currentTime);\n                return true;\n            } // All checks failed. Returning false to indicate failure to correct waiting\n\n            return false;\n        }\n        afterSeekableWindow_(seekable, currentTime, playlist, allowSeeksWithinUnsafeLiveWindow = false) {\n            if (!seekable.length) {\n                // we can't make a solid case if there's no seekable, default to false\n                return false;\n            }\n            let allowedEnd = seekable.end(seekable.length - 1) + SAFE_TIME_DELTA;\n            const isLive = !playlist.endList;\n            if (isLive && allowSeeksWithinUnsafeLiveWindow) {\n                allowedEnd = seekable.end(seekable.length - 1) + playlist.targetDuration * 3;\n            }\n            if (currentTime > allowedEnd) {\n                return true;\n            }\n            return false;\n        }\n        beforeSeekableWindow_(seekable, currentTime) {\n            if (seekable.length &&\n                // can't fall before 0 and 0 seekable start identifies VOD stream\n                seekable.start(0) > 0 && currentTime < seekable.start(0) - this.liveRangeSafeTimeDelta) {\n                return true;\n            }\n            return false;\n        }\n        videoUnderflow_({\n                            videoBuffered,\n                            audioBuffered,\n                            currentTime\n                        }) {\n            // audio only content will not have video underflow :)\n            if (!videoBuffered) {\n                return;\n            }\n            let gap; // find a gap in demuxed content.\n\n            if (videoBuffered.length && audioBuffered.length) {\n                // in Chrome audio will continue to play for ~3s when we run out of video\n                // so we have to check that the video buffer did have some buffer in the\n                // past.\n                const lastVideoRange = findRange(videoBuffered, currentTime - 3);\n                const videoRange = findRange(videoBuffered, currentTime);\n                const audioRange = findRange(audioBuffered, currentTime);\n                if (audioRange.length && !videoRange.length && lastVideoRange.length) {\n                    gap = {\n                        start: lastVideoRange.end(0),\n                        end: audioRange.end(0)\n                    };\n                } // find a gap in muxed content.\n            } else {\n                const nextRange = findNextRange(videoBuffered, currentTime); // Even if there is no available next range, there is still a possibility we are\n                // stuck in a gap due to video underflow.\n\n                if (!nextRange.length) {\n                    gap = this.gapFromVideoUnderflow_(videoBuffered, currentTime);\n                }\n            }\n            if (gap) {\n                this.logger_(`Encountered a gap in video from ${gap.start} to ${gap.end}. ` + `Seeking to current time ${currentTime}`);\n                return true;\n            }\n            return false;\n        }\n        /**\n         * Timer callback. If playback still has not proceeded, then we seek\n         * to the start of the next buffered region.\n         *\n         * @private\n         */\n\n        skipTheGap_(scheduledCurrentTime) {\n            const buffered = this.tech_.buffered();\n            const currentTime = this.tech_.currentTime();\n            const nextRange = findNextRange(buffered, currentTime);\n            this.resetTimeUpdate_();\n            if (nextRange.length === 0 || currentTime !== scheduledCurrentTime) {\n                return;\n            }\n            this.logger_('skipTheGap_:', 'currentTime:', currentTime, 'scheduled currentTime:', scheduledCurrentTime, 'nextRange start:', nextRange.start(0)); // only seek if we still have not played\n\n            this.tech_.setCurrentTime(nextRange.start(0) + TIME_FUDGE_FACTOR);\n            this.tech_.trigger({\n                type: 'usage',\n                name: 'vhs-gap-skip'\n            });\n        }\n        gapFromVideoUnderflow_(buffered, currentTime) {\n            // At least in Chrome, if there is a gap in the video buffer, the audio will continue\n            // playing for ~3 seconds after the video gap starts. This is done to account for\n            // video buffer underflow/underrun (note that this is not done when there is audio\n            // buffer underflow/underrun -- in that case the video will stop as soon as it\n            // encounters the gap, as audio stalls are more noticeable/jarring to a user than\n            // video stalls). The player's time will reflect the playthrough of audio, so the\n            // time will appear as if we are in a buffered region, even if we are stuck in a\n            // \"gap.\"\n            //\n            // Example:\n            // video buffer:   0 => 10.1, 10.2 => 20\n            // audio buffer:   0 => 20\n            // overall buffer: 0 => 10.1, 10.2 => 20\n            // current time: 13\n            //\n            // Chrome's video froze at 10 seconds, where the video buffer encountered the gap,\n            // however, the audio continued playing until it reached ~3 seconds past the gap\n            // (13 seconds), at which point it stops as well. Since current time is past the\n            // gap, findNextRange will return no ranges.\n            //\n            // To check for this issue, we see if there is a gap that starts somewhere within\n            // a 3 second range (3 seconds +/- 1 second) back from our current time.\n            const gaps = findGaps(buffered);\n            for (let i = 0; i < gaps.length; i++) {\n                const start = gaps.start(i);\n                const end = gaps.end(i); // gap is starts no more than 4 seconds back\n\n                if (currentTime - start < 4 && currentTime - start > 2) {\n                    return {\n                        start,\n                        end\n                    };\n                }\n            }\n            return null;\n        }\n    }\n    const defaultOptions = {\n        errorInterval: 30,\n        getSource(next) {\n            const tech = this.tech({\n                IWillNotUseThisInPlugins: true\n            });\n            const sourceObj = tech.currentSource_ || this.currentSource();\n            return next(sourceObj);\n        }\n    };\n    /**\n     * Main entry point for the plugin\n     *\n     * @param {Player} player a reference to a videojs Player instance\n     * @param {Object} [options] an object with plugin options\n     * @private\n     */\n\n    const initPlugin = function (player, options) {\n        let lastCalled = 0;\n        let seekTo = 0;\n        const localOptions = merge(defaultOptions, options);\n        player.ready(() => {\n            player.trigger({\n                type: 'usage',\n                name: 'vhs-error-reload-initialized'\n            });\n        });\n        /**\n         * Player modifications to perform that must wait until `loadedmetadata`\n         * has been triggered\n         *\n         * @private\n         */\n\n        const loadedMetadataHandler = function () {\n            if (seekTo) {\n                player.currentTime(seekTo);\n            }\n        };\n        /**\n         * Set the source on the player element, play, and seek if necessary\n         *\n         * @param {Object} sourceObj An object specifying the source url and mime-type to play\n         * @private\n         */\n\n        const setSource = function (sourceObj) {\n            if (sourceObj === null || sourceObj === undefined) {\n                return;\n            }\n            seekTo = player.duration() !== Infinity && player.currentTime() || 0;\n            player.one('loadedmetadata', loadedMetadataHandler);\n            player.src(sourceObj);\n            player.trigger({\n                type: 'usage',\n                name: 'vhs-error-reload'\n            });\n            player.play();\n        };\n        /**\n         * Attempt to get a source from either the built-in getSource function\n         * or a custom function provided via the options\n         *\n         * @private\n         */\n\n        const errorHandler = function () {\n            // Do not attempt to reload the source if a source-reload occurred before\n            // 'errorInterval' time has elapsed since the last source-reload\n            if (Date.now() - lastCalled < localOptions.errorInterval * 1000) {\n                player.trigger({\n                    type: 'usage',\n                    name: 'vhs-error-reload-canceled'\n                });\n                return;\n            }\n            if (!localOptions.getSource || typeof localOptions.getSource !== 'function') {\n                videojs.log.error('ERROR: reloadSourceOnError - The option getSource must be a function!');\n                return;\n            }\n            lastCalled = Date.now();\n            return localOptions.getSource.call(player, setSource);\n        };\n        /**\n         * Unbind any event handlers that were bound by the plugin\n         *\n         * @private\n         */\n\n        const cleanupEvents = function () {\n            player.off('loadedmetadata', loadedMetadataHandler);\n            player.off('error', errorHandler);\n            player.off('dispose', cleanupEvents);\n        };\n        /**\n         * Cleanup before re-initializing the plugin\n         *\n         * @param {Object} [newOptions] an object with plugin options\n         * @private\n         */\n\n        const reinitPlugin = function (newOptions) {\n            cleanupEvents();\n            initPlugin(player, newOptions);\n        };\n        player.on('error', errorHandler);\n        player.on('dispose', cleanupEvents); // Overwrite the plugin function so that we can correctly cleanup before\n        // initializing the plugin\n\n        player.reloadSourceOnError = reinitPlugin;\n    };\n    /**\n     * Reload the source when an error is detected as long as there\n     * wasn't an error previously within the last 30 seconds\n     *\n     * @param {Object} [options] an object with plugin options\n     */\n\n    const reloadSourceOnError = function (options) {\n        initPlugin(this, options);\n    };\n    var version$4 = \"3.0.2\";\n    var version$3 = \"6.3.0\";\n    var version$2 = \"1.0.1\";\n    var version$1 = \"6.0.0\";\n    var version = \"4.0.1\";\n\n    /**\n     * @file videojs-http-streaming.js\n     *\n     * The main file for the VHS project.\n     * License: https://github.com/videojs/videojs-http-streaming/blob/main/LICENSE\n     */\n    const Vhs = {\n        PlaylistLoader,\n        Playlist,\n        utils,\n        STANDARD_PLAYLIST_SELECTOR: lastBandwidthSelector,\n        INITIAL_PLAYLIST_SELECTOR: lowestBitrateCompatibleVariantSelector,\n        lastBandwidthSelector,\n        movingAverageBandwidthSelector,\n        comparePlaylistBandwidth,\n        comparePlaylistResolution,\n        xhr: xhrFactory()\n    }; // Define getter/setters for config properties\n\n    Object.keys(Config).forEach(prop => {\n        Object.defineProperty(Vhs, prop, {\n            get() {\n                videojs.log.warn(`using Vhs.${prop} is UNSAFE be sure you know what you are doing`);\n                return Config[prop];\n            },\n            set(value) {\n                videojs.log.warn(`using Vhs.${prop} is UNSAFE be sure you know what you are doing`);\n                if (typeof value !== 'number' || value < 0) {\n                    videojs.log.warn(`value of Vhs.${prop} must be greater than or equal to 0`);\n                    return;\n                }\n                Config[prop] = value;\n            }\n        });\n    });\n    const LOCAL_STORAGE_KEY = 'videojs-vhs';\n    /**\n     * Updates the selectedIndex of the QualityLevelList when a mediachange happens in vhs.\n     *\n     * @param {QualityLevelList} qualityLevels The QualityLevelList to update.\n     * @param {PlaylistLoader} playlistLoader PlaylistLoader containing the new media info.\n     * @function handleVhsMediaChange\n     */\n\n    const handleVhsMediaChange = function (qualityLevels, playlistLoader) {\n        const newPlaylist = playlistLoader.media();\n        let selectedIndex = -1;\n        for (let i = 0; i < qualityLevels.length; i++) {\n            if (qualityLevels[i].id === newPlaylist.id) {\n                selectedIndex = i;\n                break;\n            }\n        }\n        qualityLevels.selectedIndex_ = selectedIndex;\n        qualityLevels.trigger({\n            selectedIndex,\n            type: 'change'\n        });\n    };\n    /**\n     * Adds quality levels to list once playlist metadata is available\n     *\n     * @param {QualityLevelList} qualityLevels The QualityLevelList to attach events to.\n     * @param {Object} vhs Vhs object to listen to for media events.\n     * @function handleVhsLoadedMetadata\n     */\n\n    const handleVhsLoadedMetadata = function (qualityLevels, vhs) {\n        vhs.representations().forEach(rep => {\n            qualityLevels.addQualityLevel(rep);\n        });\n        handleVhsMediaChange(qualityLevels, vhs.playlists);\n    }; // VHS is a source handler, not a tech. Make sure attempts to use it\n    // as one do not cause exceptions.\n\n    Vhs.canPlaySource = function () {\n        return videojs.log.warn('VHS is no longer a tech. Please remove it from ' + 'your player\\'s techOrder.');\n    };\n    const emeKeySystems = (keySystemOptions, mainPlaylist, audioPlaylist) => {\n        if (!keySystemOptions) {\n            return keySystemOptions;\n        }\n        let codecs = {};\n        if (mainPlaylist && mainPlaylist.attributes && mainPlaylist.attributes.CODECS) {\n            codecs = unwrapCodecList(parseCodecs(mainPlaylist.attributes.CODECS));\n        }\n        if (audioPlaylist && audioPlaylist.attributes && audioPlaylist.attributes.CODECS) {\n            codecs.audio = audioPlaylist.attributes.CODECS;\n        }\n        const videoContentType = getMimeForCodec(codecs.video);\n        const audioContentType = getMimeForCodec(codecs.audio); // upsert the content types based on the selected playlist\n\n        const keySystemContentTypes = {};\n        for (const keySystem in keySystemOptions) {\n            keySystemContentTypes[keySystem] = {};\n            if (audioContentType) {\n                keySystemContentTypes[keySystem].audioContentType = audioContentType;\n            }\n            if (videoContentType) {\n                keySystemContentTypes[keySystem].videoContentType = videoContentType;\n            } // Default to using the video playlist's PSSH even though they may be different, as\n            // videojs-contrib-eme will only accept one in the options.\n            //\n            // This shouldn't be an issue for most cases as early intialization will handle all\n            // unique PSSH values, and if they aren't, then encrypted events should have the\n            // specific information needed for the unique license.\n\n            if (mainPlaylist.contentProtection && mainPlaylist.contentProtection[keySystem] && mainPlaylist.contentProtection[keySystem].pssh) {\n                keySystemContentTypes[keySystem].pssh = mainPlaylist.contentProtection[keySystem].pssh;\n            } // videojs-contrib-eme accepts the option of specifying: 'com.some.cdm': 'url'\n            // so we need to prevent overwriting the URL entirely\n\n            if (typeof keySystemOptions[keySystem] === 'string') {\n                keySystemContentTypes[keySystem].url = keySystemOptions[keySystem];\n            }\n        }\n        return merge(keySystemOptions, keySystemContentTypes);\n    };\n    /**\n     * @typedef {Object} KeySystems\n     *\n     * keySystems configuration for https://github.com/videojs/videojs-contrib-eme\n     * Note: not all options are listed here.\n     *\n     * @property {Uint8Array} [pssh]\n     *           Protection System Specific Header\n     */\n\n    /**\n     * Goes through all the playlists and collects an array of KeySystems options objects\n     * containing each playlist's keySystems and their pssh values, if available.\n     *\n     * @param {Object[]} playlists\n     *        The playlists to look through\n     * @param {string[]} keySystems\n     *        The keySystems to collect pssh values for\n     *\n     * @return {KeySystems[]}\n     *         An array of KeySystems objects containing available key systems and their\n     *         pssh values\n     */\n\n    const getAllPsshKeySystemsOptions = (playlists, keySystems) => {\n        return playlists.reduce((keySystemsArr, playlist) => {\n            if (!playlist.contentProtection) {\n                return keySystemsArr;\n            }\n            const keySystemsOptions = keySystems.reduce((keySystemsObj, keySystem) => {\n                const keySystemOptions = playlist.contentProtection[keySystem];\n                if (keySystemOptions && keySystemOptions.pssh) {\n                    keySystemsObj[keySystem] = {\n                        pssh: keySystemOptions.pssh\n                    };\n                }\n                return keySystemsObj;\n            }, {});\n            if (Object.keys(keySystemsOptions).length) {\n                keySystemsArr.push(keySystemsOptions);\n            }\n            return keySystemsArr;\n        }, []);\n    };\n    /**\n     * Returns a promise that waits for the\n     * [eme plugin](https://github.com/videojs/videojs-contrib-eme) to create a key session.\n     *\n     * Works around https://bugs.chromium.org/p/chromium/issues/detail?id=895449 in non-IE11\n     * browsers.\n     *\n     * As per the above ticket, this is particularly important for Chrome, where, if\n     * unencrypted content is appended before encrypted content and the key session has not\n     * been created, a MEDIA_ERR_DECODE will be thrown once the encrypted content is reached\n     * during playback.\n     *\n     * @param {Object} player\n     *        The player instance\n     * @param {Object[]} sourceKeySystems\n     *        The key systems options from the player source\n     * @param {Object} [audioMedia]\n     *        The active audio media playlist (optional)\n     * @param {Object[]} mainPlaylists\n     *        The playlists found on the main playlist object\n     *\n     * @return {Object}\n     *         Promise that resolves when the key session has been created\n     */\n\n    const waitForKeySessionCreation = ({\n                                           player,\n                                           sourceKeySystems,\n                                           audioMedia,\n                                           mainPlaylists\n                                       }) => {\n        if (!player.eme.initializeMediaKeys) {\n            return Promise.resolve();\n        } // TODO should all audio PSSH values be initialized for DRM?\n        //\n        // All unique video rendition pssh values are initialized for DRM, but here only\n        // the initial audio playlist license is initialized. In theory, an encrypted\n        // event should be fired if the user switches to an alternative audio playlist\n        // where a license is required, but this case hasn't yet been tested. In addition, there\n        // may be many alternate audio playlists unlikely to be used (e.g., multiple different\n        // languages).\n\n        const playlists = audioMedia ? mainPlaylists.concat([audioMedia]) : mainPlaylists;\n        const keySystemsOptionsArr = getAllPsshKeySystemsOptions(playlists, Object.keys(sourceKeySystems));\n        const initializationFinishedPromises = [];\n        const keySessionCreatedPromises = []; // Since PSSH values are interpreted as initData, EME will dedupe any duplicates. The\n        // only place where it should not be deduped is for ms-prefixed APIs, but the early\n        // return for IE11 above, and the existence of modern EME APIs in addition to\n        // ms-prefixed APIs on Edge should prevent this from being a concern.\n        // initializeMediaKeys also won't use the webkit-prefixed APIs.\n\n        keySystemsOptionsArr.forEach(keySystemsOptions => {\n            keySessionCreatedPromises.push(new Promise((resolve, reject) => {\n                player.tech_.one('keysessioncreated', resolve);\n            }));\n            initializationFinishedPromises.push(new Promise((resolve, reject) => {\n                player.eme.initializeMediaKeys({\n                    keySystems: keySystemsOptions\n                }, err => {\n                    if (err) {\n                        reject(err);\n                        return;\n                    }\n                    resolve();\n                });\n            }));\n        }); // The reasons Promise.race is chosen over Promise.any:\n        //\n        // * Promise.any is only available in Safari 14+.\n        // * None of these promises are expected to reject. If they do reject, it might be\n        //   better here for the race to surface the rejection, rather than mask it by using\n        //   Promise.any.\n\n        return Promise.race([\n            // If a session was previously created, these will all finish resolving without\n            // creating a new session, otherwise it will take until the end of all license\n            // requests, which is why the key session check is used (to make setup much faster).\n            Promise.all(initializationFinishedPromises),\n            // Once a single session is created, the browser knows DRM will be used.\n            Promise.race(keySessionCreatedPromises)]);\n    };\n    /**\n     * If the [eme](https://github.com/videojs/videojs-contrib-eme) plugin is available, and\n     * there are keySystems on the source, sets up source options to prepare the source for\n     * eme.\n     *\n     * @param {Object} player\n     *        The player instance\n     * @param {Object[]} sourceKeySystems\n     *        The key systems options from the player source\n     * @param {Object} media\n     *        The active media playlist\n     * @param {Object} [audioMedia]\n     *        The active audio media playlist (optional)\n     *\n     * @return {boolean}\n     *         Whether or not options were configured and EME is available\n     */\n\n    const setupEmeOptions = ({\n                                 player,\n                                 sourceKeySystems,\n                                 media,\n                                 audioMedia\n                             }) => {\n        const sourceOptions = emeKeySystems(sourceKeySystems, media, audioMedia);\n        if (!sourceOptions) {\n            return false;\n        }\n        player.currentSource().keySystems = sourceOptions; // eme handles the rest of the setup, so if it is missing\n        // do nothing.\n\n        if (sourceOptions && !player.eme) {\n            videojs.log.warn('DRM encrypted source cannot be decrypted without a DRM plugin');\n            return false;\n        }\n        return true;\n    };\n    const getVhsLocalStorage = () => {\n        if (!window.localStorage) {\n            return null;\n        }\n        const storedObject = window.localStorage.getItem(LOCAL_STORAGE_KEY);\n        if (!storedObject) {\n            return null;\n        }\n        try {\n            return JSON.parse(storedObject);\n        } catch (e) {\n            // someone may have tampered with the value\n            return null;\n        }\n    };\n    const updateVhsLocalStorage = options => {\n        if (!window.localStorage) {\n            return false;\n        }\n        let objectToStore = getVhsLocalStorage();\n        objectToStore = objectToStore ? merge(objectToStore, options) : options;\n        try {\n            window.localStorage.setItem(LOCAL_STORAGE_KEY, JSON.stringify(objectToStore));\n        } catch (e) {\n            // Throws if storage is full (e.g., always on iOS 5+ Safari private mode, where\n            // storage is set to 0).\n            // https://developer.mozilla.org/en-US/docs/Web/API/Storage/setItem#Exceptions\n            // No need to perform any operation.\n            return false;\n        }\n        return objectToStore;\n    };\n    /**\n     * Parses VHS-supported media types from data URIs. See\n     * https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs\n     * for information on data URIs.\n     *\n     * @param {string} dataUri\n     *        The data URI\n     *\n     * @return {string|Object}\n     *         The parsed object/string, or the original string if no supported media type\n     *         was found\n     */\n\n    const expandDataUri = dataUri => {\n        if (dataUri.toLowerCase().indexOf('data:application/vnd.videojs.vhs+json,') === 0) {\n            return JSON.parse(dataUri.substring(dataUri.indexOf(',') + 1));\n        } // no known case for this data URI, return the string as-is\n\n        return dataUri;\n    };\n    /**\n     * Whether the browser has built-in HLS support.\n     */\n\n    Vhs.supportsNativeHls = function () {\n        if (!document || !document.createElement) {\n            return false;\n        }\n        const video = document.createElement('video'); // native HLS is definitely not supported if HTML5 video isn't\n\n        if (!videojs.getTech('Html5').isSupported()) {\n            return false;\n        } // HLS manifests can go by many mime-types\n\n        const canPlay = [\n            // Apple santioned\n            'application/vnd.apple.mpegurl',\n            // Apple sanctioned for backwards compatibility\n            'audio/mpegurl',\n            // Very common\n            'audio/x-mpegurl',\n            // Very common\n            'application/x-mpegurl',\n            // Included for completeness\n            'video/x-mpegurl', 'video/mpegurl', 'application/mpegurl'];\n        return canPlay.some(function (canItPlay) {\n            return /maybe|probably/i.test(video.canPlayType(canItPlay));\n        });\n    }();\n    Vhs.supportsNativeDash = function () {\n        if (!document || !document.createElement || !videojs.getTech('Html5').isSupported()) {\n            return false;\n        }\n        return /maybe|probably/i.test(document.createElement('video').canPlayType('application/dash+xml'));\n    }();\n    Vhs.supportsTypeNatively = type => {\n        if (type === 'hls') {\n            return Vhs.supportsNativeHls;\n        }\n        if (type === 'dash') {\n            return Vhs.supportsNativeDash;\n        }\n        return false;\n    };\n    /**\n     * VHS is a source handler, not a tech. Make sure attempts to use it\n     * as one do not cause exceptions.\n     */\n\n    Vhs.isSupported = function () {\n        return videojs.log.warn('VHS is no longer a tech. Please remove it from ' + 'your player\\'s techOrder.');\n    };\n    const Component = videojs.getComponent('Component');\n    /**\n     * The Vhs Handler object, where we orchestrate all of the parts\n     * of VHS to interact with video.js\n     *\n     * @class VhsHandler\n     * @extends videojs.Component\n     * @param {Object} source the soruce object\n     * @param {Tech} tech the parent tech object\n     * @param {Object} options optional and required options\n     */\n\n    class VhsHandler extends Component {\n        constructor(source, tech, options) {\n            super(tech, options.vhs); // if a tech level `initialBandwidth` option was passed\n            // use that over the VHS level `bandwidth` option\n\n            if (typeof options.initialBandwidth === 'number') {\n                this.options_.bandwidth = options.initialBandwidth;\n            }\n            this.logger_ = logger('VhsHandler'); // we need access to the player in some cases,\n            // so, get it from Video.js via the `playerId`\n\n            if (tech.options_ && tech.options_.playerId) {\n                const _player = videojs.getPlayer(tech.options_.playerId);\n                this.player_ = _player;\n            }\n            this.tech_ = tech;\n            this.source_ = source;\n            this.stats = {};\n            this.ignoreNextSeekingEvent_ = false;\n            this.setOptions_();\n            if (this.options_.overrideNative && tech.overrideNativeAudioTracks && tech.overrideNativeVideoTracks) {\n                tech.overrideNativeAudioTracks(true);\n                tech.overrideNativeVideoTracks(true);\n            } else if (this.options_.overrideNative && (tech.featuresNativeVideoTracks || tech.featuresNativeAudioTracks)) {\n                // overriding native VHS only works if audio tracks have been emulated\n                // error early if we're misconfigured\n                throw new Error('Overriding native VHS requires emulated tracks. ' + 'See https://git.io/vMpjB');\n            } // listen for fullscreenchange events for this player so that we\n            // can adjust our quality selection quickly\n\n            this.on(document, ['fullscreenchange', 'webkitfullscreenchange', 'mozfullscreenchange', 'MSFullscreenChange'], event => {\n                const fullscreenElement = document.fullscreenElement || document.webkitFullscreenElement || document.mozFullScreenElement || document.msFullscreenElement;\n                if (fullscreenElement && fullscreenElement.contains(this.tech_.el())) {\n                    this.playlistController_.fastQualityChange_();\n                } else {\n                    // When leaving fullscreen, since the in page pixel dimensions should be smaller\n                    // than full screen, see if there should be a rendition switch down to preserve\n                    // bandwidth.\n                    this.playlistController_.checkABR_();\n                }\n            });\n            this.on(this.tech_, 'seeking', function () {\n                if (this.ignoreNextSeekingEvent_) {\n                    this.ignoreNextSeekingEvent_ = false;\n                    return;\n                }\n                this.setCurrentTime(this.tech_.currentTime());\n            });\n            this.on(this.tech_, 'error', function () {\n                // verify that the error was real and we are loaded\n                // enough to have pc loaded.\n                if (this.tech_.error() && this.playlistController_) {\n                    this.playlistController_.pauseLoading();\n                }\n            });\n            this.on(this.tech_, 'play', this.play);\n        }\n        setOptions_() {\n            // defaults\n            this.options_.withCredentials = this.options_.withCredentials || false;\n            this.options_.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions === false ? false : true;\n            this.options_.useDevicePixelRatio = this.options_.useDevicePixelRatio || false;\n            this.options_.useBandwidthFromLocalStorage = typeof this.source_.useBandwidthFromLocalStorage !== 'undefined' ? this.source_.useBandwidthFromLocalStorage : this.options_.useBandwidthFromLocalStorage || false;\n            this.options_.useNetworkInformationApi = this.options_.useNetworkInformationApi || false;\n            this.options_.useDtsForTimestampOffset = this.options_.useDtsForTimestampOffset || false;\n            this.options_.customTagParsers = this.options_.customTagParsers || [];\n            this.options_.customTagMappers = this.options_.customTagMappers || [];\n            this.options_.cacheEncryptionKeys = this.options_.cacheEncryptionKeys || false;\n            this.options_.llhls = this.options_.llhls === false ? false : true;\n            this.options_.bufferBasedABR = this.options_.bufferBasedABR || false;\n            if (typeof this.options_.playlistExclusionDuration !== 'number') {\n                this.options_.playlistExclusionDuration = 5 * 60;\n            }\n            if (typeof this.options_.bandwidth !== 'number') {\n                if (this.options_.useBandwidthFromLocalStorage) {\n                    const storedObject = getVhsLocalStorage();\n                    if (storedObject && storedObject.bandwidth) {\n                        this.options_.bandwidth = storedObject.bandwidth;\n                        this.tech_.trigger({\n                            type: 'usage',\n                            name: 'vhs-bandwidth-from-local-storage'\n                        });\n                    }\n                    if (storedObject && storedObject.throughput) {\n                        this.options_.throughput = storedObject.throughput;\n                        this.tech_.trigger({\n                            type: 'usage',\n                            name: 'vhs-throughput-from-local-storage'\n                        });\n                    }\n                }\n            } // if bandwidth was not set by options or pulled from local storage, start playlist\n            // selection at a reasonable bandwidth\n\n            if (typeof this.options_.bandwidth !== 'number') {\n                this.options_.bandwidth = Config.INITIAL_BANDWIDTH;\n            } // If the bandwidth number is unchanged from the initial setting\n            // then this takes precedence over the enableLowInitialPlaylist option\n\n            this.options_.enableLowInitialPlaylist = this.options_.enableLowInitialPlaylist && this.options_.bandwidth === Config.INITIAL_BANDWIDTH; // grab options passed to player.src\n\n            ['withCredentials', 'useDevicePixelRatio', 'limitRenditionByPlayerDimensions', 'bandwidth', 'customTagParsers', 'customTagMappers', 'cacheEncryptionKeys', 'playlistSelector', 'initialPlaylistSelector', 'bufferBasedABR', 'liveRangeSafeTimeDelta', 'llhls', 'useNetworkInformationApi', 'useDtsForTimestampOffset', 'exactManifestTimings', 'leastPixelDiffSelector'].forEach(option => {\n                if (typeof this.source_[option] !== 'undefined') {\n                    this.options_[option] = this.source_[option];\n                }\n            });\n            this.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions;\n            this.useDevicePixelRatio = this.options_.useDevicePixelRatio;\n        }\n        /**\n         * called when player.src gets called, handle a new source\n         *\n         * @param {Object} src the source object to handle\n         */\n\n        src(src, type) {\n            // do nothing if the src is falsey\n            if (!src) {\n                return;\n            }\n            this.setOptions_(); // add main playlist controller options\n\n            this.options_.src = expandDataUri(this.source_.src);\n            this.options_.tech = this.tech_;\n            this.options_.externVhs = Vhs;\n            this.options_.sourceType = simpleTypeFromSourceType(type); // Whenever we seek internally, we should update the tech\n\n            this.options_.seekTo = time => {\n                this.tech_.setCurrentTime(time);\n            };\n            this.playlistController_ = new PlaylistController(this.options_);\n            const playbackWatcherOptions = merge({\n                liveRangeSafeTimeDelta: SAFE_TIME_DELTA\n            }, this.options_, {\n                seekable: () => this.seekable(),\n                media: () => this.playlistController_.media(),\n                playlistController: this.playlistController_\n            });\n            this.playbackWatcher_ = new PlaybackWatcher(playbackWatcherOptions);\n            this.playlistController_.on('error', () => {\n                const player = videojs.players[this.tech_.options_.playerId];\n                let error = this.playlistController_.error;\n                if (typeof error === 'object' && !error.code) {\n                    error.code = 3;\n                } else if (typeof error === 'string') {\n                    error = {\n                        message: error,\n                        code: 3\n                    };\n                }\n                player.error(error);\n            });\n            const defaultSelector = this.options_.bufferBasedABR ? Vhs.movingAverageBandwidthSelector(0.55) : Vhs.STANDARD_PLAYLIST_SELECTOR; // `this` in selectPlaylist should be the VhsHandler for backwards\n            // compatibility with < v2\n\n            this.playlistController_.selectPlaylist = this.selectPlaylist ? this.selectPlaylist.bind(this) : defaultSelector.bind(this);\n            this.playlistController_.selectInitialPlaylist = Vhs.INITIAL_PLAYLIST_SELECTOR.bind(this); // re-expose some internal objects for backwards compatibility with < v2\n\n            this.playlists = this.playlistController_.mainPlaylistLoader_;\n            this.mediaSource = this.playlistController_.mediaSource; // Proxy assignment of some properties to the main playlist\n            // controller. Using a custom property for backwards compatibility\n            // with < v2\n\n            Object.defineProperties(this, {\n                selectPlaylist: {\n                    get() {\n                        return this.playlistController_.selectPlaylist;\n                    },\n                    set(selectPlaylist) {\n                        this.playlistController_.selectPlaylist = selectPlaylist.bind(this);\n                    }\n                },\n                throughput: {\n                    get() {\n                        return this.playlistController_.mainSegmentLoader_.throughput.rate;\n                    },\n                    set(throughput) {\n                        this.playlistController_.mainSegmentLoader_.throughput.rate = throughput; // By setting `count` to 1 the throughput value becomes the starting value\n                        // for the cumulative average\n\n                        this.playlistController_.mainSegmentLoader_.throughput.count = 1;\n                    }\n                },\n                bandwidth: {\n                    get() {\n                        let playerBandwidthEst = this.playlistController_.mainSegmentLoader_.bandwidth;\n                        const networkInformation = window.navigator.connection || window.navigator.mozConnection || window.navigator.webkitConnection;\n                        const tenMbpsAsBitsPerSecond = 10e6;\n                        if (this.options_.useNetworkInformationApi && networkInformation) {\n                            // downlink returns Mbps\n                            // https://developer.mozilla.org/en-US/docs/Web/API/NetworkInformation/downlink\n                            const networkInfoBandwidthEstBitsPerSec = networkInformation.downlink * 1000 * 1000; // downlink maxes out at 10 Mbps. In the event that both networkInformationApi and the player\n                            // estimate a bandwidth greater than 10 Mbps, use the larger of the two estimates to ensure that\n                            // high quality streams are not filtered out.\n\n                            if (networkInfoBandwidthEstBitsPerSec >= tenMbpsAsBitsPerSecond && playerBandwidthEst >= tenMbpsAsBitsPerSecond) {\n                                playerBandwidthEst = Math.max(playerBandwidthEst, networkInfoBandwidthEstBitsPerSec);\n                            } else {\n                                playerBandwidthEst = networkInfoBandwidthEstBitsPerSec;\n                            }\n                        }\n                        return playerBandwidthEst;\n                    },\n                    set(bandwidth) {\n                        this.playlistController_.mainSegmentLoader_.bandwidth = bandwidth; // setting the bandwidth manually resets the throughput counter\n                        // `count` is set to zero that current value of `rate` isn't included\n                        // in the cumulative average\n\n                        this.playlistController_.mainSegmentLoader_.throughput = {\n                            rate: 0,\n                            count: 0\n                        };\n                    }\n                },\n                /**\n                 * `systemBandwidth` is a combination of two serial processes bit-rates. The first\n                 * is the network bitrate provided by `bandwidth` and the second is the bitrate of\n                 * the entire process after that - decryption, transmuxing, and appending - provided\n                 * by `throughput`.\n                 *\n                 * Since the two process are serial, the overall system bandwidth is given by:\n                 *   sysBandwidth = 1 / (1 / bandwidth + 1 / throughput)\n                 */\n                systemBandwidth: {\n                    get() {\n                        const invBandwidth = 1 / (this.bandwidth || 1);\n                        let invThroughput;\n                        if (this.throughput > 0) {\n                            invThroughput = 1 / this.throughput;\n                        } else {\n                            invThroughput = 0;\n                        }\n                        const systemBitrate = Math.floor(1 / (invBandwidth + invThroughput));\n                        return systemBitrate;\n                    },\n                    set() {\n                        videojs.log.error('The \"systemBandwidth\" property is read-only');\n                    }\n                }\n            });\n            if (this.options_.bandwidth) {\n                this.bandwidth = this.options_.bandwidth;\n            }\n            if (this.options_.throughput) {\n                this.throughput = this.options_.throughput;\n            }\n            Object.defineProperties(this.stats, {\n                bandwidth: {\n                    get: () => this.bandwidth || 0,\n                    enumerable: true\n                },\n                mediaRequests: {\n                    get: () => this.playlistController_.mediaRequests_() || 0,\n                    enumerable: true\n                },\n                mediaRequestsAborted: {\n                    get: () => this.playlistController_.mediaRequestsAborted_() || 0,\n                    enumerable: true\n                },\n                mediaRequestsTimedout: {\n                    get: () => this.playlistController_.mediaRequestsTimedout_() || 0,\n                    enumerable: true\n                },\n                mediaRequestsErrored: {\n                    get: () => this.playlistController_.mediaRequestsErrored_() || 0,\n                    enumerable: true\n                },\n                mediaTransferDuration: {\n                    get: () => this.playlistController_.mediaTransferDuration_() || 0,\n                    enumerable: true\n                },\n                mediaBytesTransferred: {\n                    get: () => this.playlistController_.mediaBytesTransferred_() || 0,\n                    enumerable: true\n                },\n                mediaSecondsLoaded: {\n                    get: () => this.playlistController_.mediaSecondsLoaded_() || 0,\n                    enumerable: true\n                },\n                mediaAppends: {\n                    get: () => this.playlistController_.mediaAppends_() || 0,\n                    enumerable: true\n                },\n                mainAppendsToLoadedData: {\n                    get: () => this.playlistController_.mainAppendsToLoadedData_() || 0,\n                    enumerable: true\n                },\n                audioAppendsToLoadedData: {\n                    get: () => this.playlistController_.audioAppendsToLoadedData_() || 0,\n                    enumerable: true\n                },\n                appendsToLoadedData: {\n                    get: () => this.playlistController_.appendsToLoadedData_() || 0,\n                    enumerable: true\n                },\n                timeToLoadedData: {\n                    get: () => this.playlistController_.timeToLoadedData_() || 0,\n                    enumerable: true\n                },\n                buffered: {\n                    get: () => timeRangesToArray(this.tech_.buffered()),\n                    enumerable: true\n                },\n                currentTime: {\n                    get: () => this.tech_.currentTime(),\n                    enumerable: true\n                },\n                currentSource: {\n                    get: () => this.tech_.currentSource_,\n                    enumerable: true\n                },\n                currentTech: {\n                    get: () => this.tech_.name_,\n                    enumerable: true\n                },\n                duration: {\n                    get: () => this.tech_.duration(),\n                    enumerable: true\n                },\n                main: {\n                    get: () => this.playlists.main,\n                    enumerable: true\n                },\n                playerDimensions: {\n                    get: () => this.tech_.currentDimensions(),\n                    enumerable: true\n                },\n                seekable: {\n                    get: () => timeRangesToArray(this.tech_.seekable()),\n                    enumerable: true\n                },\n                timestamp: {\n                    get: () => Date.now(),\n                    enumerable: true\n                },\n                videoPlaybackQuality: {\n                    get: () => this.tech_.getVideoPlaybackQuality(),\n                    enumerable: true\n                }\n            });\n            this.tech_.one('canplay', this.playlistController_.setupFirstPlay.bind(this.playlistController_));\n            this.tech_.on('bandwidthupdate', () => {\n                if (this.options_.useBandwidthFromLocalStorage) {\n                    updateVhsLocalStorage({\n                        bandwidth: this.bandwidth,\n                        throughput: Math.round(this.throughput)\n                    });\n                }\n            });\n            this.playlistController_.on('selectedinitialmedia', () => {\n                // Add the manual rendition mix-in to VhsHandler\n                renditionSelectionMixin(this);\n            });\n            this.playlistController_.sourceUpdater_.on('createdsourcebuffers', () => {\n                this.setupEme_();\n            }); // the bandwidth of the primary segment loader is our best\n            // estimate of overall bandwidth\n\n            this.on(this.playlistController_, 'progress', function () {\n                this.tech_.trigger('progress');\n            }); // In the live case, we need to ignore the very first `seeking` event since\n            // that will be the result of the seek-to-live behavior\n\n            this.on(this.playlistController_, 'firstplay', function () {\n                this.ignoreNextSeekingEvent_ = true;\n            });\n            this.setupQualityLevels_(); // do nothing if the tech has been disposed already\n            // this can occur if someone sets the src in player.ready(), for instance\n\n            if (!this.tech_.el()) {\n                return;\n            }\n            this.mediaSourceUrl_ = window.URL.createObjectURL(this.playlistController_.mediaSource);\n            this.tech_.src(this.mediaSourceUrl_);\n        }\n        createKeySessions_() {\n            const audioPlaylistLoader = this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader;\n            this.logger_('waiting for EME key session creation');\n            waitForKeySessionCreation({\n                player: this.player_,\n                sourceKeySystems: this.source_.keySystems,\n                audioMedia: audioPlaylistLoader && audioPlaylistLoader.media(),\n                mainPlaylists: this.playlists.main.playlists\n            }).then(() => {\n                this.logger_('created EME key session');\n                this.playlistController_.sourceUpdater_.initializedEme();\n            }).catch(err => {\n                this.logger_('error while creating EME key session', err);\n                this.player_.error({\n                    message: 'Failed to initialize media keys for EME',\n                    code: 3\n                });\n            });\n        }\n        handleWaitingForKey_() {\n            // If waitingforkey is fired, it's possible that the data that's necessary to retrieve\n            // the key is in the manifest. While this should've happened on initial source load, it\n            // may happen again in live streams where the keys change, and the manifest info\n            // reflects the update.\n            //\n            // Because videojs-contrib-eme compares the PSSH data we send to that of PSSH data it's\n            // already requested keys for, we don't have to worry about this generating extraneous\n            // requests.\n            this.logger_('waitingforkey fired, attempting to create any new key sessions');\n            this.createKeySessions_();\n        }\n        /**\n         * If necessary and EME is available, sets up EME options and waits for key session\n         * creation.\n         *\n         * This function also updates the source updater so taht it can be used, as for some\n         * browsers, EME must be configured before content is appended (if appending unencrypted\n         * content before encrypted content).\n         */\n\n        setupEme_() {\n            const audioPlaylistLoader = this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader;\n            const didSetupEmeOptions = setupEmeOptions({\n                player: this.player_,\n                sourceKeySystems: this.source_.keySystems,\n                media: this.playlists.media(),\n                audioMedia: audioPlaylistLoader && audioPlaylistLoader.media()\n            });\n            this.player_.tech_.on('keystatuschange', e => {\n                if (e.status !== 'output-restricted') {\n                    return;\n                }\n                const mainPlaylist = this.playlistController_.main();\n                if (!mainPlaylist || !mainPlaylist.playlists) {\n                    return;\n                }\n                const excludedHDPlaylists = []; // Assume all HD streams are unplayable and exclude them from ABR selection\n\n                mainPlaylist.playlists.forEach(playlist => {\n                    if (playlist && playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height >= 720) {\n                        if (!playlist.excludeUntil || playlist.excludeUntil < Infinity) {\n                            playlist.excludeUntil = Infinity;\n                            excludedHDPlaylists.push(playlist);\n                        }\n                    }\n                });\n                if (excludedHDPlaylists.length) {\n                    videojs.log.warn('DRM keystatus changed to \"output-restricted.\" Removing the following HD playlists ' + 'that will most likely fail to play and clearing the buffer. ' + 'This may be due to HDCP restrictions on the stream and the capabilities of the current device.', ...excludedHDPlaylists); // Clear the buffer before switching playlists, since it may already contain unplayable segments\n\n                    this.playlistController_.fastQualityChange_();\n                }\n            });\n            this.handleWaitingForKey_ = this.handleWaitingForKey_.bind(this);\n            this.player_.tech_.on('waitingforkey', this.handleWaitingForKey_); // In IE11 this is too early to initialize media keys, and IE11 does not support\n            // promises.\n\n            if (videojs.browser.IE_VERSION === 11 || !didSetupEmeOptions) {\n                // If EME options were not set up, we've done all we could to initialize EME.\n                this.playlistController_.sourceUpdater_.initializedEme();\n                return;\n            }\n            this.createKeySessions_();\n        }\n        /**\n         * Initializes the quality levels and sets listeners to update them.\n         *\n         * @method setupQualityLevels_\n         * @private\n         */\n\n        setupQualityLevels_() {\n            const player = videojs.players[this.tech_.options_.playerId]; // if there isn't a player or there isn't a qualityLevels plugin\n            // or qualityLevels_ listeners have already been setup, do nothing.\n\n            if (!player || !player.qualityLevels || this.qualityLevels_) {\n                return;\n            }\n            this.qualityLevels_ = player.qualityLevels();\n            this.playlistController_.on('selectedinitialmedia', () => {\n                handleVhsLoadedMetadata(this.qualityLevels_, this);\n            });\n            this.playlists.on('mediachange', () => {\n                handleVhsMediaChange(this.qualityLevels_, this.playlists);\n            });\n        }\n        /**\n         * return the version\n         */\n\n        static version() {\n            return {\n                '@videojs/http-streaming': version$4,\n                'mux.js': version$3,\n                'mpd-parser': version$2,\n                'm3u8-parser': version$1,\n                'aes-decrypter': version\n            };\n        }\n        /**\n         * return the version\n         */\n\n        version() {\n            return this.constructor.version();\n        }\n        canChangeType() {\n            return SourceUpdater.canChangeType();\n        }\n        /**\n         * Begin playing the video.\n         */\n\n        play() {\n            this.playlistController_.play();\n        }\n        /**\n         * a wrapper around the function in PlaylistController\n         */\n\n        setCurrentTime(currentTime) {\n            this.playlistController_.setCurrentTime(currentTime);\n        }\n        /**\n         * a wrapper around the function in PlaylistController\n         */\n\n        duration() {\n            return this.playlistController_.duration();\n        }\n        /**\n         * a wrapper around the function in PlaylistController\n         */\n\n        seekable() {\n            return this.playlistController_.seekable();\n        }\n        /**\n         * Abort all outstanding work and cleanup.\n         */\n\n        dispose() {\n            if (this.playbackWatcher_) {\n                this.playbackWatcher_.dispose();\n            }\n            if (this.playlistController_) {\n                this.playlistController_.dispose();\n            }\n            if (this.qualityLevels_) {\n                this.qualityLevels_.dispose();\n            }\n            if (this.tech_ && this.tech_.vhs) {\n                delete this.tech_.vhs;\n            }\n            if (this.mediaSourceUrl_ && window.URL.revokeObjectURL) {\n                window.URL.revokeObjectURL(this.mediaSourceUrl_);\n                this.mediaSourceUrl_ = null;\n            }\n            if (this.tech_) {\n                this.tech_.off('waitingforkey', this.handleWaitingForKey_);\n            }\n            super.dispose();\n        }\n        convertToProgramTime(time, callback) {\n            return getProgramTime({\n                playlist: this.playlistController_.media(),\n                time,\n                callback\n            });\n        } // the player must be playing before calling this\n\n        seekToProgramTime(programTime, callback, pauseAfterSeek = true, retryCount = 2) {\n            return seekToProgramTime({\n                programTime,\n                playlist: this.playlistController_.media(),\n                retryCount,\n                pauseAfterSeek,\n                seekTo: this.options_.seekTo,\n                tech: this.options_.tech,\n                callback\n            });\n        }\n    }\n    /**\n     * The Source Handler object, which informs video.js what additional\n     * MIME types are supported and sets up playback. 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+{"version":3,"file":"video-lazy.min.js","sources":["../src/video-lazy.js"],"sourcesContent":["/**\n * @license\n * Video.js 8.10.0 <http://videojs.com/>\n * Copyright Brightcove, Inc. <https://www.brightcove.com/>\n * Available under Apache License Version 2.0\n * <https://github.com/videojs/video.js/blob/main/LICENSE>\n *\n * Includes vtt.js <https://github.com/mozilla/vtt.js>\n * Available under Apache License Version 2.0\n * <https://github.com/mozilla/vtt.js/blob/main/LICENSE>\n */\n\n(function (global, factory) {\n    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :\n        typeof define === 'function' && define.amd ? define(factory) :\n            (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.videojs = factory());\n})(this, (function () { 'use strict';\n\n    var version$5 = \"8.10.0\";\n\n    /**\n     * An Object that contains lifecycle hooks as keys which point to an array\n     * of functions that are run when a lifecycle is triggered\n     *\n     * @private\n     */\n    const hooks_ = {};\n\n    /**\n     * Get a list of hooks for a specific lifecycle\n     *\n     * @param  {string} type\n     *         the lifecycle to get hooks from\n     *\n     * @param  {Function|Function[]} [fn]\n     *         Optionally add a hook (or hooks) to the lifecycle that your are getting.\n     *\n     * @return {Array}\n     *         an array of hooks, or an empty array if there are none.\n     */\n    const hooks = function (type, fn) {\n        hooks_[type] = hooks_[type] || [];\n        if (fn) {\n            hooks_[type] = hooks_[type].concat(fn);\n        }\n        return hooks_[type];\n    };\n\n    /**\n     * Add a function hook to a specific videojs lifecycle.\n     *\n     * @param {string} type\n     *        the lifecycle to hook the function to.\n     *\n     * @param {Function|Function[]}\n     *        The function or array of functions to attach.\n     */\n    const hook = function (type, fn) {\n        hooks(type, fn);\n    };\n\n    /**\n     * Remove a hook from a specific videojs lifecycle.\n     *\n     * @param  {string} type\n     *         the lifecycle that the function hooked to\n     *\n     * @param  {Function} fn\n     *         The hooked function to remove\n     *\n     * @return {boolean}\n     *         The function that was removed or undef\n     */\n    const removeHook = function (type, fn) {\n        const index = hooks(type).indexOf(fn);\n        if (index <= -1) {\n            return false;\n        }\n        hooks_[type] = hooks_[type].slice();\n        hooks_[type].splice(index, 1);\n        return true;\n    };\n\n    /**\n     * Add a function hook that will only run once to a specific videojs lifecycle.\n     *\n     * @param {string} type\n     *        the lifecycle to hook the function to.\n     *\n     * @param {Function|Function[]}\n     *        The function or array of functions to attach.\n     */\n    const hookOnce = function (type, fn) {\n        hooks(type, [].concat(fn).map(original => {\n            const wrapper = (...args) => {\n                removeHook(type, wrapper);\n                return original(...args);\n            };\n            return wrapper;\n        }));\n    };\n\n    /**\n     * @file fullscreen-api.js\n     * @module fullscreen-api\n     */\n\n    /**\n     * Store the browser-specific methods for the fullscreen API.\n     *\n     * @type {Object}\n     * @see [Specification]{@link https://fullscreen.spec.whatwg.org}\n     * @see [Map Approach From Screenfull.js]{@link https://github.com/sindresorhus/screenfull.js}\n     */\n    const FullscreenApi = {\n        prefixed: true\n    };\n\n    // browser API methods\n    const apiMap = [['requestFullscreen', 'exitFullscreen', 'fullscreenElement', 'fullscreenEnabled', 'fullscreenchange', 'fullscreenerror', 'fullscreen'],\n        // WebKit\n        ['webkitRequestFullscreen', 'webkitExitFullscreen', 'webkitFullscreenElement', 'webkitFullscreenEnabled', 'webkitfullscreenchange', 'webkitfullscreenerror', '-webkit-full-screen']];\n    const specApi = apiMap[0];\n    let browserApi;\n\n    // determine the supported set of functions\n    for (let i = 0; i < apiMap.length; i++) {\n        // check for exitFullscreen function\n        if (apiMap[i][1] in document) {\n            browserApi = apiMap[i];\n            break;\n        }\n    }\n\n    // map the browser API names to the spec API names\n    if (browserApi) {\n        for (let i = 0; i < browserApi.length; i++) {\n            FullscreenApi[specApi[i]] = browserApi[i];\n        }\n        FullscreenApi.prefixed = browserApi[0] !== specApi[0];\n    }\n\n    /**\n     * @file create-logger.js\n     * @module create-logger\n     */\n\n        // This is the private tracking variable for the logging history.\n    let history = [];\n\n    /**\n     * Log messages to the console and history based on the type of message\n     *\n     * @private\n     * @param  {string} name\n     *         The name of the console method to use.\n     *\n     * @param  {Object} log\n     *         The arguments to be passed to the matching console method.\n     *\n     * @param {string} [styles]\n     *        styles for name\n     */\n    const LogByTypeFactory = (name, log, styles) => (type, level, args) => {\n        const lvl = log.levels[level];\n        const lvlRegExp = new RegExp(`^(${lvl})$`);\n        let resultName = name;\n        if (type !== 'log') {\n            // Add the type to the front of the message when it's not \"log\".\n            args.unshift(type.toUpperCase() + ':');\n        }\n        if (styles) {\n            resultName = `%c${name}`;\n            args.unshift(styles);\n        }\n\n        // Add console prefix after adding to history.\n        args.unshift(resultName + ':');\n\n        // Add a clone of the args at this point to history.\n        if (history) {\n            history.push([].concat(args));\n\n            // only store 1000 history entries\n            const splice = history.length - 1000;\n            history.splice(0, splice > 0 ? splice : 0);\n        }\n\n        // If there's no console then don't try to output messages, but they will\n        // still be stored in history.\n        if (!window.console) {\n            return;\n        }\n\n        // Was setting these once outside of this function, but containing them\n        // in the function makes it easier to test cases where console doesn't exist\n        // when the module is executed.\n        let fn = window.console[type];\n        if (!fn && type === 'debug') {\n            // Certain browsers don't have support for console.debug. For those, we\n            // should default to the closest comparable log.\n            fn = window.console.info || window.console.log;\n        }\n\n        // Bail out if there's no console or if this type is not allowed by the\n        // current logging level.\n        if (!fn || !lvl || !lvlRegExp.test(type)) {\n            return;\n        }\n        fn[Array.isArray(args) ? 'apply' : 'call'](window.console, args);\n    };\n    function createLogger$1(name, delimiter = ':', styles = '') {\n        // This is the private tracking variable for logging level.\n        let level = 'info';\n\n        // the curried logByType bound to the specific log and history\n        let logByType;\n\n        /**\n         * Logs plain debug messages. Similar to `console.log`.\n         *\n         * Due to [limitations](https://github.com/jsdoc3/jsdoc/issues/955#issuecomment-313829149)\n         * of our JSDoc template, we cannot properly document this as both a function\n         * and a namespace, so its function signature is documented here.\n         *\n         * #### Arguments\n         * ##### *args\n         * *[]\n         *\n         * Any combination of values that could be passed to `console.log()`.\n         *\n         * #### Return Value\n         *\n         * `undefined`\n         *\n         * @namespace\n         * @param    {...*} args\n         *           One or more messages or objects that should be logged.\n         */\n        const log = function (...args) {\n            logByType('log', level, args);\n        };\n\n        // This is the logByType helper that the logging methods below use\n        logByType = LogByTypeFactory(name, log, styles);\n\n        /**\n         * Create a new subLogger which chains the old name to the new name.\n         *\n         * For example, doing `videojs.log.createLogger('player')` and then using that logger will log the following:\n         * ```js\n         *  mylogger('foo');\n         *  // > VIDEOJS: player: foo\n         * ```\n         *\n         * @param {string} subName\n         *        The name to add call the new logger\n         * @param {string} [subDelimiter]\n         *        Optional delimiter\n         * @param {string} [subStyles]\n         *        Optional styles\n         * @return {Object}\n         */\n        log.createLogger = (subName, subDelimiter, subStyles) => {\n            const resultDelimiter = subDelimiter !== undefined ? subDelimiter : delimiter;\n            const resultStyles = subStyles !== undefined ? subStyles : styles;\n            const resultName = `${name} ${resultDelimiter} ${subName}`;\n            return createLogger$1(resultName, resultDelimiter, resultStyles);\n        };\n\n        /**\n         * Create a new logger.\n         *\n         * @param {string} newName\n         *        The name for the new logger\n         * @param {string} [newDelimiter]\n         *        Optional delimiter\n         * @param {string} [newStyles]\n         *        Optional styles\n         * @return {Object}\n         */\n        log.createNewLogger = (newName, newDelimiter, newStyles) => {\n            return createLogger$1(newName, newDelimiter, newStyles);\n        };\n\n        /**\n         * Enumeration of available logging levels, where the keys are the level names\n         * and the values are `|`-separated strings containing logging methods allowed\n         * in that logging level. These strings are used to create a regular expression\n         * matching the function name being called.\n         *\n         * Levels provided by Video.js are:\n         *\n         * - `off`: Matches no calls. Any value that can be cast to `false` will have\n         *   this effect. The most restrictive.\n         * - `all`: Matches only Video.js-provided functions (`debug`, `log`,\n         *   `log.warn`, and `log.error`).\n         * - `debug`: Matches `log.debug`, `log`, `log.warn`, and `log.error` calls.\n         * - `info` (default): Matches `log`, `log.warn`, and `log.error` calls.\n         * - `warn`: Matches `log.warn` and `log.error` calls.\n         * - `error`: Matches only `log.error` calls.\n         *\n         * @type {Object}\n         */\n        log.levels = {\n            all: 'debug|log|warn|error',\n            off: '',\n            debug: 'debug|log|warn|error',\n            info: 'log|warn|error',\n            warn: 'warn|error',\n            error: 'error',\n            DEFAULT: level\n        };\n\n        /**\n         * Get or set the current logging level.\n         *\n         * If a string matching a key from {@link module:log.levels} is provided, acts\n         * as a setter.\n         *\n         * @param  {'all'|'debug'|'info'|'warn'|'error'|'off'} [lvl]\n         *         Pass a valid level to set a new logging level.\n         *\n         * @return {string}\n         *         The current logging level.\n         */\n        log.level = lvl => {\n            if (typeof lvl === 'string') {\n                if (!log.levels.hasOwnProperty(lvl)) {\n                    throw new Error(`\"${lvl}\" in not a valid log level`);\n                }\n                level = lvl;\n            }\n            return level;\n        };\n\n        /**\n         * Returns an array containing everything that has been logged to the history.\n         *\n         * This array is a shallow clone of the internal history record. However, its\n         * contents are _not_ cloned; so, mutating objects inside this array will\n         * mutate them in history.\n         *\n         * @return {Array}\n         */\n        log.history = () => history ? [].concat(history) : [];\n\n        /**\n         * Allows you to filter the history by the given logger name\n         *\n         * @param {string} fname\n         *        The name to filter by\n         *\n         * @return {Array}\n         *         The filtered list to return\n         */\n        log.history.filter = fname => {\n            return (history || []).filter(historyItem => {\n                // if the first item in each historyItem includes `fname`, then it's a match\n                return new RegExp(`.*${fname}.*`).test(historyItem[0]);\n            });\n        };\n\n        /**\n         * Clears the internal history tracking, but does not prevent further history\n         * tracking.\n         */\n        log.history.clear = () => {\n            if (history) {\n                history.length = 0;\n            }\n        };\n\n        /**\n         * Disable history tracking if it is currently enabled.\n         */\n        log.history.disable = () => {\n            if (history !== null) {\n                history.length = 0;\n                history = null;\n            }\n        };\n\n        /**\n         * Enable history tracking if it is currently disabled.\n         */\n        log.history.enable = () => {\n            if (history === null) {\n                history = [];\n            }\n        };\n\n        /**\n         * Logs error messages. Similar to `console.error`.\n         *\n         * @param {...*} args\n         *        One or more messages or objects that should be logged as an error\n         */\n        log.error = (...args) => logByType('error', level, args);\n\n        /**\n         * Logs warning messages. Similar to `console.warn`.\n         *\n         * @param {...*} args\n         *        One or more messages or objects that should be logged as a warning.\n         */\n        log.warn = (...args) => logByType('warn', level, args);\n\n        /**\n         * Logs debug messages. Similar to `console.debug`, but may also act as a comparable\n         * log if `console.debug` is not available\n         *\n         * @param {...*} args\n         *        One or more messages or objects that should be logged as debug.\n         */\n        log.debug = (...args) => logByType('debug', level, args);\n        return log;\n    }\n\n    /**\n     * @file log.js\n     * @module log\n     */\n    const log$1 = createLogger$1('VIDEOJS');\n    const createLogger = log$1.createLogger;\n\n    /**\n     * @file obj.js\n     * @module obj\n     */\n\n    /**\n     * @callback obj:EachCallback\n     *\n     * @param {*} value\n     *        The current key for the object that is being iterated over.\n     *\n     * @param {string} key\n     *        The current key-value for object that is being iterated over\n     */\n\n    /**\n     * @callback obj:ReduceCallback\n     *\n     * @param {*} accum\n     *        The value that is accumulating over the reduce loop.\n     *\n     * @param {*} value\n     *        The current key for the object that is being iterated over.\n     *\n     * @param {string} key\n     *        The current key-value for object that is being iterated over\n     *\n     * @return {*}\n     *         The new accumulated value.\n     */\n    const toString$1 = Object.prototype.toString;\n\n    /**\n     * Get the keys of an Object\n     *\n     * @param {Object}\n     *        The Object to get the keys from\n     *\n     * @return {string[]}\n     *         An array of the keys from the object. Returns an empty array if the\n     *         object passed in was invalid or had no keys.\n     *\n     * @private\n     */\n    const keys = function (object) {\n        return isObject$1(object) ? Object.keys(object) : [];\n    };\n\n    /**\n     * Array-like iteration for objects.\n     *\n     * @param {Object} object\n     *        The object to iterate over\n     *\n     * @param {obj:EachCallback} fn\n     *        The callback function which is called for each key in the object.\n     */\n    function each(object, fn) {\n        keys(object).forEach(key => fn(object[key], key));\n    }\n\n    /**\n     * Array-like reduce for objects.\n     *\n     * @param {Object} object\n     *        The Object that you want to reduce.\n     *\n     * @param {Function} fn\n     *         A callback function which is called for each key in the object. It\n     *         receives the accumulated value and the per-iteration value and key\n     *         as arguments.\n     *\n     * @param {*} [initial = 0]\n     *        Starting value\n     *\n     * @return {*}\n     *         The final accumulated value.\n     */\n    function reduce(object, fn, initial = 0) {\n        return keys(object).reduce((accum, key) => fn(accum, object[key], key), initial);\n    }\n\n    /**\n     * Returns whether a value is an object of any kind - including DOM nodes,\n     * arrays, regular expressions, etc. Not functions, though.\n     *\n     * This avoids the gotcha where using `typeof` on a `null` value\n     * results in `'object'`.\n     *\n     * @param  {Object} value\n     * @return {boolean}\n     */\n    function isObject$1(value) {\n        return !!value && typeof value === 'object';\n    }\n\n    /**\n     * Returns whether an object appears to be a \"plain\" object - that is, a\n     * direct instance of `Object`.\n     *\n     * @param  {Object} value\n     * @return {boolean}\n     */\n    function isPlain(value) {\n        return isObject$1(value) && toString$1.call(value) === '[object Object]' && value.constructor === Object;\n    }\n\n    /**\n     * Merge two objects recursively.\n     *\n     * Performs a deep merge like\n     * {@link https://lodash.com/docs/4.17.10#merge|lodash.merge}, but only merges\n     * plain objects (not arrays, elements, or anything else).\n     *\n     * Non-plain object values will be copied directly from the right-most\n     * argument.\n     *\n     * @param   {Object[]} sources\n     *          One or more objects to merge into a new object.\n     *\n     * @return {Object}\n     *          A new object that is the merged result of all sources.\n     */\n    function merge$2(...sources) {\n        const result = {};\n        sources.forEach(source => {\n            if (!source) {\n                return;\n            }\n            each(source, (value, key) => {\n                if (!isPlain(value)) {\n                    result[key] = value;\n                    return;\n                }\n                if (!isPlain(result[key])) {\n                    result[key] = {};\n                }\n                result[key] = merge$2(result[key], value);\n            });\n        });\n        return result;\n    }\n\n    /**\n     * Returns an array of values for a given object\n     *\n     * @param  {Object} source - target object\n     * @return {Array<unknown>} - object values\n     */\n    function values$1(source = {}) {\n        const result = [];\n        for (const key in source) {\n            if (source.hasOwnProperty(key)) {\n                const value = source[key];\n                result.push(value);\n            }\n        }\n        return result;\n    }\n\n    /**\n     * Object.defineProperty but \"lazy\", which means that the value is only set after\n     * it is retrieved the first time, rather than being set right away.\n     *\n     * @param {Object} obj the object to set the property on\n     * @param {string} key the key for the property to set\n     * @param {Function} getValue the function used to get the value when it is needed.\n     * @param {boolean} setter whether a setter should be allowed or not\n     */\n    function defineLazyProperty(obj, key, getValue, setter = true) {\n        const set = value => Object.defineProperty(obj, key, {\n            value,\n            enumerable: true,\n            writable: true\n        });\n        const options = {\n            configurable: true,\n            enumerable: true,\n            get() {\n                const value = getValue();\n                set(value);\n                return value;\n            }\n        };\n        if (setter) {\n            options.set = set;\n        }\n        return Object.defineProperty(obj, key, options);\n    }\n\n    var Obj = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        each: each,\n        reduce: reduce,\n        isObject: isObject$1,\n        isPlain: isPlain,\n        merge: merge$2,\n        values: values$1,\n        defineLazyProperty: defineLazyProperty\n    });\n\n    /**\n     * @file browser.js\n     * @module browser\n     */\n\n    /**\n     * Whether or not this device is an iPod.\n     *\n     * @static\n     * @type {Boolean}\n     */\n    let IS_IPOD = false;\n\n    /**\n     * The detected iOS version - or `null`.\n     *\n     * @static\n     * @type {string|null}\n     */\n    let IOS_VERSION = null;\n\n    /**\n     * Whether or not this is an Android device.\n     *\n     * @static\n     * @type {Boolean}\n     */\n    let IS_ANDROID = false;\n\n    /**\n     * The detected Android version - or `null` if not Android or indeterminable.\n     *\n     * @static\n     * @type {number|string|null}\n     */\n    let ANDROID_VERSION;\n\n    /**\n     * Whether or not this is Mozilla Firefox.\n     *\n     * @static\n     * @type {Boolean}\n     */\n    let IS_FIREFOX = false;\n\n    /**\n     * Whether or not this is Microsoft Edge.\n     *\n     * @static\n     * @type {Boolean}\n     */\n    let IS_EDGE = false;\n\n    /**\n     * Whether or not this is any Chromium Browser\n     *\n     * @static\n     * @type {Boolean}\n     */\n    let IS_CHROMIUM = false;\n\n    /**\n     * Whether or not this is any Chromium browser that is not Edge.\n     *\n     * This will also be `true` for Chrome on iOS, which will have different support\n     * as it is actually Safari under the hood.\n     *\n     * Deprecated, as the behaviour to not match Edge was to prevent Legacy Edge's UA matching.\n     * IS_CHROMIUM should be used instead.\n     * \"Chromium but not Edge\" could be explicitly tested with IS_CHROMIUM && !IS_EDGE\n     *\n     * @static\n     * @deprecated\n     * @type {Boolean}\n     */\n    let IS_CHROME = false;\n\n    /**\n     * The detected Chromium version - or `null`.\n     *\n     * @static\n     * @type {number|null}\n     */\n    let CHROMIUM_VERSION = null;\n\n    /**\n     * The detected Google Chrome version - or `null`.\n     * This has always been the _Chromium_ version, i.e. would return on Chromium Edge.\n     * Deprecated, use CHROMIUM_VERSION instead.\n     *\n     * @static\n     * @deprecated\n     * @type {number|null}\n     */\n    let CHROME_VERSION = null;\n\n    /**\n     * The detected Internet Explorer version - or `null`.\n     *\n     * @static\n     * @deprecated\n     * @type {number|null}\n     */\n    let IE_VERSION = null;\n\n    /**\n     * Whether or not this is desktop Safari.\n     *\n     * @static\n     * @type {Boolean}\n     */\n    let IS_SAFARI = false;\n\n    /**\n     * Whether or not this is a Windows machine.\n     *\n     * @static\n     * @type {Boolean}\n     */\n    let IS_WINDOWS = false;\n\n    /**\n     * Whether or not this device is an iPad.\n     *\n     * @static\n     * @type {Boolean}\n     */\n    let IS_IPAD = false;\n\n    /**\n     * Whether or not this device is an iPhone.\n     *\n     * @static\n     * @type {Boolean}\n     */\n        // The Facebook app's UIWebView identifies as both an iPhone and iPad, so\n        // to identify iPhones, we need to exclude iPads.\n        // http://artsy.github.io/blog/2012/10/18/the-perils-of-ios-user-agent-sniffing/\n    let IS_IPHONE = false;\n\n    /**\n     * Whether or not this device is touch-enabled.\n     *\n     * @static\n     * @const\n     * @type {Boolean}\n     */\n    const TOUCH_ENABLED = Boolean(isReal() && ('ontouchstart' in window || window.navigator.maxTouchPoints || window.DocumentTouch && window.document instanceof window.DocumentTouch));\n    const UAD = window.navigator && window.navigator.userAgentData;\n    if (UAD && UAD.platform && UAD.brands) {\n        // If userAgentData is present, use it instead of userAgent to avoid warnings\n        // Currently only implemented on Chromium\n        // userAgentData does not expose Android version, so ANDROID_VERSION remains `null`\n\n        IS_ANDROID = UAD.platform === 'Android';\n        IS_EDGE = Boolean(UAD.brands.find(b => b.brand === 'Microsoft Edge'));\n        IS_CHROMIUM = Boolean(UAD.brands.find(b => b.brand === 'Chromium'));\n        IS_CHROME = !IS_EDGE && IS_CHROMIUM;\n        CHROMIUM_VERSION = CHROME_VERSION = (UAD.brands.find(b => b.brand === 'Chromium') || {}).version || null;\n        IS_WINDOWS = UAD.platform === 'Windows';\n    }\n\n    // If the browser is not Chromium, either userAgentData is not present which could be an old Chromium browser,\n    //  or it's a browser that has added userAgentData since that we don't have tests for yet. In either case,\n    // the checks need to be made agiainst the regular userAgent string.\n    if (!IS_CHROMIUM) {\n        const USER_AGENT = window.navigator && window.navigator.userAgent || '';\n        IS_IPOD = /iPod/i.test(USER_AGENT);\n        IOS_VERSION = function () {\n            const match = USER_AGENT.match(/OS (\\d+)_/i);\n            if (match && match[1]) {\n                return match[1];\n            }\n            return null;\n        }();\n        IS_ANDROID = /Android/i.test(USER_AGENT);\n        ANDROID_VERSION = function () {\n            // This matches Android Major.Minor.Patch versions\n            // ANDROID_VERSION is Major.Minor as a Number, if Minor isn't available, then only Major is returned\n            const match = USER_AGENT.match(/Android (\\d+)(?:\\.(\\d+))?(?:\\.(\\d+))*/i);\n            if (!match) {\n                return null;\n            }\n            const major = match[1] && parseFloat(match[1]);\n            const minor = match[2] && parseFloat(match[2]);\n            if (major && minor) {\n                return parseFloat(match[1] + '.' + match[2]);\n            } else if (major) {\n                return major;\n            }\n            return null;\n        }();\n        IS_FIREFOX = /Firefox/i.test(USER_AGENT);\n        IS_EDGE = /Edg/i.test(USER_AGENT);\n        IS_CHROMIUM = /Chrome/i.test(USER_AGENT) || /CriOS/i.test(USER_AGENT);\n        IS_CHROME = !IS_EDGE && IS_CHROMIUM;\n        CHROMIUM_VERSION = CHROME_VERSION = function () {\n            const match = USER_AGENT.match(/(Chrome|CriOS)\\/(\\d+)/);\n            if (match && match[2]) {\n                return parseFloat(match[2]);\n            }\n            return null;\n        }();\n        IE_VERSION = function () {\n            const result = /MSIE\\s(\\d+)\\.\\d/.exec(USER_AGENT);\n            let version = result && parseFloat(result[1]);\n            if (!version && /Trident\\/7.0/i.test(USER_AGENT) && /rv:11.0/.test(USER_AGENT)) {\n                // IE 11 has a different user agent string than other IE versions\n                version = 11.0;\n            }\n            return version;\n        }();\n        IS_SAFARI = /Safari/i.test(USER_AGENT) && !IS_CHROME && !IS_ANDROID && !IS_EDGE;\n        IS_WINDOWS = /Windows/i.test(USER_AGENT);\n        IS_IPAD = /iPad/i.test(USER_AGENT) || IS_SAFARI && TOUCH_ENABLED && !/iPhone/i.test(USER_AGENT);\n        IS_IPHONE = /iPhone/i.test(USER_AGENT) && !IS_IPAD;\n    }\n\n    /**\n     * Whether or not this is an iOS device.\n     *\n     * @static\n     * @const\n     * @type {Boolean}\n     */\n    const IS_IOS = IS_IPHONE || IS_IPAD || IS_IPOD;\n\n    /**\n     * Whether or not this is any flavor of Safari - including iOS.\n     *\n     * @static\n     * @const\n     * @type {Boolean}\n     */\n    const IS_ANY_SAFARI = (IS_SAFARI || IS_IOS) && !IS_CHROME;\n\n    var browser = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        get IS_IPOD () { return IS_IPOD; },\n        get IOS_VERSION () { return IOS_VERSION; },\n        get IS_ANDROID () { return IS_ANDROID; },\n        get ANDROID_VERSION () { return ANDROID_VERSION; },\n        get IS_FIREFOX () { return IS_FIREFOX; },\n        get IS_EDGE () { return IS_EDGE; },\n        get IS_CHROMIUM () { return IS_CHROMIUM; },\n        get IS_CHROME () { return IS_CHROME; },\n        get CHROMIUM_VERSION () { return CHROMIUM_VERSION; },\n        get CHROME_VERSION () { return CHROME_VERSION; },\n        get IE_VERSION () { return IE_VERSION; },\n        get IS_SAFARI () { return IS_SAFARI; },\n        get IS_WINDOWS () { return IS_WINDOWS; },\n        get IS_IPAD () { return IS_IPAD; },\n        get IS_IPHONE () { return IS_IPHONE; },\n        TOUCH_ENABLED: TOUCH_ENABLED,\n        IS_IOS: IS_IOS,\n        IS_ANY_SAFARI: IS_ANY_SAFARI\n    });\n\n    /**\n     * @file dom.js\n     * @module dom\n     */\n\n    /**\n     * Detect if a value is a string with any non-whitespace characters.\n     *\n     * @private\n     * @param  {string} str\n     *         The string to check\n     *\n     * @return {boolean}\n     *         Will be `true` if the string is non-blank, `false` otherwise.\n     *\n     */\n    function isNonBlankString(str) {\n        // we use str.trim as it will trim any whitespace characters\n        // from the front or back of non-whitespace characters. aka\n        // Any string that contains non-whitespace characters will\n        // still contain them after `trim` but whitespace only strings\n        // will have a length of 0, failing this check.\n        return typeof str === 'string' && Boolean(str.trim());\n    }\n\n    /**\n     * Throws an error if the passed string has whitespace. This is used by\n     * class methods to be relatively consistent with the classList API.\n     *\n     * @private\n     * @param  {string} str\n     *         The string to check for whitespace.\n     *\n     * @throws {Error}\n     *         Throws an error if there is whitespace in the string.\n     */\n    function throwIfWhitespace(str) {\n        // str.indexOf instead of regex because str.indexOf is faster performance wise.\n        if (str.indexOf(' ') >= 0) {\n            throw new Error('class has illegal whitespace characters');\n        }\n    }\n\n    /**\n     * Whether the current DOM interface appears to be real (i.e. not simulated).\n     *\n     * @return {boolean}\n     *         Will be `true` if the DOM appears to be real, `false` otherwise.\n     */\n    function isReal() {\n        // Both document and window will never be undefined thanks to `global`.\n        return document === window.document;\n    }\n\n    /**\n     * Determines, via duck typing, whether or not a value is a DOM element.\n     *\n     * @param  {*} value\n     *         The value to check.\n     *\n     * @return {boolean}\n     *         Will be `true` if the value is a DOM element, `false` otherwise.\n     */\n    function isEl(value) {\n        return isObject$1(value) && value.nodeType === 1;\n    }\n\n    /**\n     * Determines if the current DOM is embedded in an iframe.\n     *\n     * @return {boolean}\n     *         Will be `true` if the DOM is embedded in an iframe, `false`\n     *         otherwise.\n     */\n    function isInFrame() {\n        // We need a try/catch here because Safari will throw errors when attempting\n        // to get either `parent` or `self`\n        try {\n            return window.parent !== window.self;\n        } catch (x) {\n            return true;\n        }\n    }\n\n    /**\n     * Creates functions to query the DOM using a given method.\n     *\n     * @private\n     * @param   {string} method\n     *          The method to create the query with.\n     *\n     * @return  {Function}\n     *          The query method\n     */\n    function createQuerier(method) {\n        return function (selector, context) {\n            if (!isNonBlankString(selector)) {\n                return document[method](null);\n            }\n            if (isNonBlankString(context)) {\n                context = document.querySelector(context);\n            }\n            const ctx = isEl(context) ? context : document;\n            return ctx[method] && ctx[method](selector);\n        };\n    }\n\n    /**\n     * Creates an element and applies properties, attributes, and inserts content.\n     *\n     * @param  {string} [tagName='div']\n     *         Name of tag to be created.\n     *\n     * @param  {Object} [properties={}]\n     *         Element properties to be applied.\n     *\n     * @param  {Object} [attributes={}]\n     *         Element attributes to be applied.\n     *\n     * @param {ContentDescriptor} [content]\n     *        A content descriptor object.\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n    function createEl(tagName = 'div', properties = {}, attributes = {}, content) {\n        const el = document.createElement(tagName);\n        Object.getOwnPropertyNames(properties).forEach(function (propName) {\n            const val = properties[propName];\n\n            // Handle textContent since it's not supported everywhere and we have a\n            // method for it.\n            if (propName === 'textContent') {\n                textContent(el, val);\n            } else if (el[propName] !== val || propName === 'tabIndex') {\n                el[propName] = val;\n            }\n        });\n        Object.getOwnPropertyNames(attributes).forEach(function (attrName) {\n            el.setAttribute(attrName, attributes[attrName]);\n        });\n        if (content) {\n            appendContent(el, content);\n        }\n        return el;\n    }\n\n    /**\n     * Injects text into an element, replacing any existing contents entirely.\n     *\n     * @param  {HTMLElement} el\n     *         The element to add text content into\n     *\n     * @param  {string} text\n     *         The text content to add.\n     *\n     * @return {Element}\n     *         The element with added text content.\n     */\n    function textContent(el, text) {\n        if (typeof el.textContent === 'undefined') {\n            el.innerText = text;\n        } else {\n            el.textContent = text;\n        }\n        return el;\n    }\n\n    /**\n     * Insert an element as the first child node of another\n     *\n     * @param {Element} child\n     *        Element to insert\n     *\n     * @param {Element} parent\n     *        Element to insert child into\n     */\n    function prependTo(child, parent) {\n        if (parent.firstChild) {\n            parent.insertBefore(child, parent.firstChild);\n        } else {\n            parent.appendChild(child);\n        }\n    }\n\n    /**\n     * Check if an element has a class name.\n     *\n     * @param  {Element} element\n     *         Element to check\n     *\n     * @param  {string} classToCheck\n     *         Class name to check for\n     *\n     * @return {boolean}\n     *         Will be `true` if the element has a class, `false` otherwise.\n     *\n     * @throws {Error}\n     *         Throws an error if `classToCheck` has white space.\n     */\n    function hasClass(element, classToCheck) {\n        throwIfWhitespace(classToCheck);\n        return element.classList.contains(classToCheck);\n    }\n\n    /**\n     * Add a class name to an element.\n     *\n     * @param  {Element} element\n     *         Element to add class name to.\n     *\n     * @param  {...string} classesToAdd\n     *         One or more class name to add.\n     *\n     * @return {Element}\n     *         The DOM element with the added class name.\n     */\n    function addClass(element, ...classesToAdd) {\n        element.classList.add(...classesToAdd.reduce((prev, current) => prev.concat(current.split(/\\s+/)), []));\n        return element;\n    }\n\n    /**\n     * Remove a class name from an element.\n     *\n     * @param  {Element} element\n     *         Element to remove a class name from.\n     *\n     * @param  {...string} classesToRemove\n     *         One or more class name to remove.\n     *\n     * @return {Element}\n     *         The DOM element with class name removed.\n     */\n    function removeClass(element, ...classesToRemove) {\n        // Protect in case the player gets disposed\n        if (!element) {\n            log$1.warn(\"removeClass was called with an element that doesn't exist\");\n            return null;\n        }\n        element.classList.remove(...classesToRemove.reduce((prev, current) => prev.concat(current.split(/\\s+/)), []));\n        return element;\n    }\n\n    /**\n     * The callback definition for toggleClass.\n     *\n     * @callback module:dom~PredicateCallback\n     * @param    {Element} element\n     *           The DOM element of the Component.\n     *\n     * @param    {string} classToToggle\n     *           The `className` that wants to be toggled\n     *\n     * @return   {boolean|undefined}\n     *           If `true` is returned, the `classToToggle` will be added to the\n     *           `element`. If `false`, the `classToToggle` will be removed from\n     *           the `element`. If `undefined`, the callback will be ignored.\n     */\n\n    /**\n     * Adds or removes a class name to/from an element depending on an optional\n     * condition or the presence/absence of the class name.\n     *\n     * @param  {Element} element\n     *         The element to toggle a class name on.\n     *\n     * @param  {string} classToToggle\n     *         The class that should be toggled.\n     *\n     * @param  {boolean|module:dom~PredicateCallback} [predicate]\n     *         See the return value for {@link module:dom~PredicateCallback}\n     *\n     * @return {Element}\n     *         The element with a class that has been toggled.\n     */\n    function toggleClass(element, classToToggle, predicate) {\n        if (typeof predicate === 'function') {\n            predicate = predicate(element, classToToggle);\n        }\n        if (typeof predicate !== 'boolean') {\n            predicate = undefined;\n        }\n        classToToggle.split(/\\s+/).forEach(className => element.classList.toggle(className, predicate));\n        return element;\n    }\n\n    /**\n     * Apply attributes to an HTML element.\n     *\n     * @param {Element} el\n     *        Element to add attributes to.\n     *\n     * @param {Object} [attributes]\n     *        Attributes to be applied.\n     */\n    function setAttributes(el, attributes) {\n        Object.getOwnPropertyNames(attributes).forEach(function (attrName) {\n            const attrValue = attributes[attrName];\n            if (attrValue === null || typeof attrValue === 'undefined' || attrValue === false) {\n                el.removeAttribute(attrName);\n            } else {\n                el.setAttribute(attrName, attrValue === true ? '' : attrValue);\n            }\n        });\n    }\n\n    /**\n     * Get an element's attribute values, as defined on the HTML tag.\n     *\n     * Attributes are not the same as properties. They're defined on the tag\n     * or with setAttribute.\n     *\n     * @param  {Element} tag\n     *         Element from which to get tag attributes.\n     *\n     * @return {Object}\n     *         All attributes of the element. Boolean attributes will be `true` or\n     *         `false`, others will be strings.\n     */\n    function getAttributes(tag) {\n        const obj = {};\n\n        // known boolean attributes\n        // we can check for matching boolean properties, but not all browsers\n        // and not all tags know about these attributes, so, we still want to check them manually\n        const knownBooleans = ['autoplay', 'controls', 'playsinline', 'loop', 'muted', 'default', 'defaultMuted'];\n        if (tag && tag.attributes && tag.attributes.length > 0) {\n            const attrs = tag.attributes;\n            for (let i = attrs.length - 1; i >= 0; i--) {\n                const attrName = attrs[i].name;\n                /** @type {boolean|string} */\n                let attrVal = attrs[i].value;\n\n                // check for known booleans\n                // the matching element property will return a value for typeof\n                if (knownBooleans.includes(attrName)) {\n                    // the value of an included boolean attribute is typically an empty\n                    // string ('') which would equal false if we just check for a false value.\n                    // we also don't want support bad code like autoplay='false'\n                    attrVal = attrVal !== null ? true : false;\n                }\n                obj[attrName] = attrVal;\n            }\n        }\n        return obj;\n    }\n\n    /**\n     * Get the value of an element's attribute.\n     *\n     * @param {Element} el\n     *        A DOM element.\n     *\n     * @param {string} attribute\n     *        Attribute to get the value of.\n     *\n     * @return {string}\n     *         The value of the attribute.\n     */\n    function getAttribute(el, attribute) {\n        return el.getAttribute(attribute);\n    }\n\n    /**\n     * Set the value of an element's attribute.\n     *\n     * @param {Element} el\n     *        A DOM element.\n     *\n     * @param {string} attribute\n     *        Attribute to set.\n     *\n     * @param {string} value\n     *        Value to set the attribute to.\n     */\n    function setAttribute(el, attribute, value) {\n        el.setAttribute(attribute, value);\n    }\n\n    /**\n     * Remove an element's attribute.\n     *\n     * @param {Element} el\n     *        A DOM element.\n     *\n     * @param {string} attribute\n     *        Attribute to remove.\n     */\n    function removeAttribute(el, attribute) {\n        el.removeAttribute(attribute);\n    }\n\n    /**\n     * Attempt to block the ability to select text.\n     */\n    function blockTextSelection() {\n        document.body.focus();\n        document.onselectstart = function () {\n            return false;\n        };\n    }\n\n    /**\n     * Turn off text selection blocking.\n     */\n    function unblockTextSelection() {\n        document.onselectstart = function () {\n            return true;\n        };\n    }\n\n    /**\n     * Identical to the native `getBoundingClientRect` function, but ensures that\n     * the method is supported at all (it is in all browsers we claim to support)\n     * and that the element is in the DOM before continuing.\n     *\n     * This wrapper function also shims properties which are not provided by some\n     * older browsers (namely, IE8).\n     *\n     * Additionally, some browsers do not support adding properties to a\n     * `ClientRect`/`DOMRect` object; so, we shallow-copy it with the standard\n     * properties (except `x` and `y` which are not widely supported). This helps\n     * avoid implementations where keys are non-enumerable.\n     *\n     * @param  {Element} el\n     *         Element whose `ClientRect` we want to calculate.\n     *\n     * @return {Object|undefined}\n     *         Always returns a plain object - or `undefined` if it cannot.\n     */\n    function getBoundingClientRect(el) {\n        if (el && el.getBoundingClientRect && el.parentNode) {\n            const rect = el.getBoundingClientRect();\n            const result = {};\n            ['bottom', 'height', 'left', 'right', 'top', 'width'].forEach(k => {\n                if (rect[k] !== undefined) {\n                    result[k] = rect[k];\n                }\n            });\n            if (!result.height) {\n                result.height = parseFloat(computedStyle(el, 'height'));\n            }\n            if (!result.width) {\n                result.width = parseFloat(computedStyle(el, 'width'));\n            }\n            return result;\n        }\n    }\n\n    /**\n     * Represents the position of a DOM element on the page.\n     *\n     * @typedef  {Object} module:dom~Position\n     *\n     * @property {number} left\n     *           Pixels to the left.\n     *\n     * @property {number} top\n     *           Pixels from the top.\n     */\n\n    /**\n     * Get the position of an element in the DOM.\n     *\n     * Uses `getBoundingClientRect` technique from John Resig.\n     *\n     * @see http://ejohn.org/blog/getboundingclientrect-is-awesome/\n     *\n     * @param  {Element} el\n     *         Element from which to get offset.\n     *\n     * @return {module:dom~Position}\n     *         The position of the element that was passed in.\n     */\n    function findPosition(el) {\n        if (!el || el && !el.offsetParent) {\n            return {\n                left: 0,\n                top: 0,\n                width: 0,\n                height: 0\n            };\n        }\n        const width = el.offsetWidth;\n        const height = el.offsetHeight;\n        let left = 0;\n        let top = 0;\n        while (el.offsetParent && el !== document[FullscreenApi.fullscreenElement]) {\n            left += el.offsetLeft;\n            top += el.offsetTop;\n            el = el.offsetParent;\n        }\n        return {\n            left,\n            top,\n            width,\n            height\n        };\n    }\n\n    /**\n     * Represents x and y coordinates for a DOM element or mouse pointer.\n     *\n     * @typedef  {Object} module:dom~Coordinates\n     *\n     * @property {number} x\n     *           x coordinate in pixels\n     *\n     * @property {number} y\n     *           y coordinate in pixels\n     */\n\n    /**\n     * Get the pointer position within an element.\n     *\n     * The base on the coordinates are the bottom left of the element.\n     *\n     * @param  {Element} el\n     *         Element on which to get the pointer position on.\n     *\n     * @param  {Event} event\n     *         Event object.\n     *\n     * @return {module:dom~Coordinates}\n     *         A coordinates object corresponding to the mouse position.\n     *\n     */\n    function getPointerPosition(el, event) {\n        const translated = {\n            x: 0,\n            y: 0\n        };\n        if (IS_IOS) {\n            let item = el;\n            while (item && item.nodeName.toLowerCase() !== 'html') {\n                const transform = computedStyle(item, 'transform');\n                if (/^matrix/.test(transform)) {\n                    const values = transform.slice(7, -1).split(/,\\s/).map(Number);\n                    translated.x += values[4];\n                    translated.y += values[5];\n                } else if (/^matrix3d/.test(transform)) {\n                    const values = transform.slice(9, -1).split(/,\\s/).map(Number);\n                    translated.x += values[12];\n                    translated.y += values[13];\n                }\n                item = item.parentNode;\n            }\n        }\n        const position = {};\n        const boxTarget = findPosition(event.target);\n        const box = findPosition(el);\n        const boxW = box.width;\n        const boxH = box.height;\n        let offsetY = event.offsetY - (box.top - boxTarget.top);\n        let offsetX = event.offsetX - (box.left - boxTarget.left);\n        if (event.changedTouches) {\n            offsetX = event.changedTouches[0].pageX - box.left;\n            offsetY = event.changedTouches[0].pageY + box.top;\n            if (IS_IOS) {\n                offsetX -= translated.x;\n                offsetY -= translated.y;\n            }\n        }\n        position.y = 1 - Math.max(0, Math.min(1, offsetY / boxH));\n        position.x = Math.max(0, Math.min(1, offsetX / boxW));\n        return position;\n    }\n\n    /**\n     * Determines, via duck typing, whether or not a value is a text node.\n     *\n     * @param  {*} value\n     *         Check if this value is a text node.\n     *\n     * @return {boolean}\n     *         Will be `true` if the value is a text node, `false` otherwise.\n     */\n    function isTextNode$1(value) {\n        return isObject$1(value) && value.nodeType === 3;\n    }\n\n    /**\n     * Empties the contents of an element.\n     *\n     * @param  {Element} el\n     *         The element to empty children from\n     *\n     * @return {Element}\n     *         The element with no children\n     */\n    function emptyEl(el) {\n        while (el.firstChild) {\n            el.removeChild(el.firstChild);\n        }\n        return el;\n    }\n\n    /**\n     * This is a mixed value that describes content to be injected into the DOM\n     * via some method. It can be of the following types:\n     *\n     * Type       | Description\n     * -----------|-------------\n     * `string`   | The value will be normalized into a text node.\n     * `Element`  | The value will be accepted as-is.\n     * `Text`     | A TextNode. The value will be accepted as-is.\n     * `Array`    | A one-dimensional array of strings, elements, text nodes, or functions. These functions should return a string, element, or text node (any other return value, like an array, will be ignored).\n     * `Function` | A function, which is expected to return a string, element, text node, or array - any of the other possible values described above. This means that a content descriptor could be a function that returns an array of functions, but those second-level functions must return strings, elements, or text nodes.\n     *\n     * @typedef {string|Element|Text|Array|Function} ContentDescriptor\n     */\n\n    /**\n     * Normalizes content for eventual insertion into the DOM.\n     *\n     * This allows a wide range of content definition methods, but helps protect\n     * from falling into the trap of simply writing to `innerHTML`, which could\n     * be an XSS concern.\n     *\n     * The content for an element can be passed in multiple types and\n     * combinations, whose behavior is as follows:\n     *\n     * @param {ContentDescriptor} content\n     *        A content descriptor value.\n     *\n     * @return {Array}\n     *         All of the content that was passed in, normalized to an array of\n     *         elements or text nodes.\n     */\n    function normalizeContent(content) {\n        // First, invoke content if it is a function. If it produces an array,\n        // that needs to happen before normalization.\n        if (typeof content === 'function') {\n            content = content();\n        }\n\n        // Next up, normalize to an array, so one or many items can be normalized,\n        // filtered, and returned.\n        return (Array.isArray(content) ? content : [content]).map(value => {\n            // First, invoke value if it is a function to produce a new value,\n            // which will be subsequently normalized to a Node of some kind.\n            if (typeof value === 'function') {\n                value = value();\n            }\n            if (isEl(value) || isTextNode$1(value)) {\n                return value;\n            }\n            if (typeof value === 'string' && /\\S/.test(value)) {\n                return document.createTextNode(value);\n            }\n        }).filter(value => value);\n    }\n\n    /**\n     * Normalizes and appends content to an element.\n     *\n     * @param  {Element} el\n     *         Element to append normalized content to.\n     *\n     * @param {ContentDescriptor} content\n     *        A content descriptor value.\n     *\n     * @return {Element}\n     *         The element with appended normalized content.\n     */\n    function appendContent(el, content) {\n        normalizeContent(content).forEach(node => el.appendChild(node));\n        return el;\n    }\n\n    /**\n     * Normalizes and inserts content into an element; this is identical to\n     * `appendContent()`, except it empties the element first.\n     *\n     * @param {Element} el\n     *        Element to insert normalized content into.\n     *\n     * @param {ContentDescriptor} content\n     *        A content descriptor value.\n     *\n     * @return {Element}\n     *         The element with inserted normalized content.\n     */\n    function insertContent(el, content) {\n        return appendContent(emptyEl(el), content);\n    }\n\n    /**\n     * Check if an event was a single left click.\n     *\n     * @param  {MouseEvent} event\n     *         Event object.\n     *\n     * @return {boolean}\n     *         Will be `true` if a single left click, `false` otherwise.\n     */\n    function isSingleLeftClick(event) {\n        // Note: if you create something draggable, be sure to\n        // call it on both `mousedown` and `mousemove` event,\n        // otherwise `mousedown` should be enough for a button\n\n        if (event.button === undefined && event.buttons === undefined) {\n            // Why do we need `buttons` ?\n            // Because, middle mouse sometimes have this:\n            // e.button === 0 and e.buttons === 4\n            // Furthermore, we want to prevent combination click, something like\n            // HOLD middlemouse then left click, that would be\n            // e.button === 0, e.buttons === 5\n            // just `button` is not gonna work\n\n            // Alright, then what this block does ?\n            // this is for chrome `simulate mobile devices`\n            // I want to support this as well\n\n            return true;\n        }\n        if (event.button === 0 && event.buttons === undefined) {\n            // Touch screen, sometimes on some specific device, `buttons`\n            // doesn't have anything (safari on ios, blackberry...)\n\n            return true;\n        }\n\n        // `mouseup` event on a single left click has\n        // `button` and `buttons` equal to 0\n        if (event.type === 'mouseup' && event.button === 0 && event.buttons === 0) {\n            return true;\n        }\n        if (event.button !== 0 || event.buttons !== 1) {\n            // This is the reason we have those if else block above\n            // if any special case we can catch and let it slide\n            // we do it above, when get to here, this definitely\n            // is-not-left-click\n\n            return false;\n        }\n        return true;\n    }\n\n    /**\n     * Finds a single DOM element matching `selector` within the optional\n     * `context` of another DOM element (defaulting to `document`).\n     *\n     * @param  {string} selector\n     *         A valid CSS selector, which will be passed to `querySelector`.\n     *\n     * @param  {Element|String} [context=document]\n     *         A DOM element within which to query. Can also be a selector\n     *         string in which case the first matching element will be used\n     *         as context. If missing (or no element matches selector), falls\n     *         back to `document`.\n     *\n     * @return {Element|null}\n     *         The element that was found or null.\n     */\n    const $ = createQuerier('querySelector');\n\n    /**\n     * Finds a all DOM elements matching `selector` within the optional\n     * `context` of another DOM element (defaulting to `document`).\n     *\n     * @param  {string} selector\n     *         A valid CSS selector, which will be passed to `querySelectorAll`.\n     *\n     * @param  {Element|String} [context=document]\n     *         A DOM element within which to query. Can also be a selector\n     *         string in which case the first matching element will be used\n     *         as context. If missing (or no element matches selector), falls\n     *         back to `document`.\n     *\n     * @return {NodeList}\n     *         A element list of elements that were found. Will be empty if none\n     *         were found.\n     *\n     */\n    const $$ = createQuerier('querySelectorAll');\n\n    /**\n     * A safe getComputedStyle.\n     *\n     * This is needed because in Firefox, if the player is loaded in an iframe with\n     * `display:none`, then `getComputedStyle` returns `null`, so, we do a\n     * null-check to make sure that the player doesn't break in these cases.\n     *\n     * @param    {Element} el\n     *           The element you want the computed style of\n     *\n     * @param    {string} prop\n     *           The property name you want\n     *\n     * @see      https://bugzilla.mozilla.org/show_bug.cgi?id=548397\n     */\n    function computedStyle(el, prop) {\n        if (!el || !prop) {\n            return '';\n        }\n        if (typeof window.getComputedStyle === 'function') {\n            let computedStyleValue;\n            try {\n                computedStyleValue = window.getComputedStyle(el);\n            } catch (e) {\n                return '';\n            }\n            return computedStyleValue ? computedStyleValue.getPropertyValue(prop) || computedStyleValue[prop] : '';\n        }\n        return '';\n    }\n\n    /**\n     * Copy document style sheets to another window.\n     *\n     * @param    {Window} win\n     *           The window element you want to copy the document style sheets to.\n     *\n     */\n    function copyStyleSheetsToWindow(win) {\n        [...document.styleSheets].forEach(styleSheet => {\n            try {\n                const cssRules = [...styleSheet.cssRules].map(rule => rule.cssText).join('');\n                const style = document.createElement('style');\n                style.textContent = cssRules;\n                win.document.head.appendChild(style);\n            } catch (e) {\n                const link = document.createElement('link');\n                link.rel = 'stylesheet';\n                link.type = styleSheet.type;\n                // For older Safari this has to be the string; on other browsers setting the MediaList works\n                link.media = styleSheet.media.mediaText;\n                link.href = styleSheet.href;\n                win.document.head.appendChild(link);\n            }\n        });\n    }\n\n    var Dom = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        isReal: isReal,\n        isEl: isEl,\n        isInFrame: isInFrame,\n        createEl: createEl,\n        textContent: textContent,\n        prependTo: prependTo,\n        hasClass: hasClass,\n        addClass: addClass,\n        removeClass: removeClass,\n        toggleClass: toggleClass,\n        setAttributes: setAttributes,\n        getAttributes: getAttributes,\n        getAttribute: getAttribute,\n        setAttribute: setAttribute,\n        removeAttribute: removeAttribute,\n        blockTextSelection: blockTextSelection,\n        unblockTextSelection: unblockTextSelection,\n        getBoundingClientRect: getBoundingClientRect,\n        findPosition: findPosition,\n        getPointerPosition: getPointerPosition,\n        isTextNode: isTextNode$1,\n        emptyEl: emptyEl,\n        normalizeContent: normalizeContent,\n        appendContent: appendContent,\n        insertContent: insertContent,\n        isSingleLeftClick: isSingleLeftClick,\n        $: $,\n        $$: $$,\n        computedStyle: computedStyle,\n        copyStyleSheetsToWindow: copyStyleSheetsToWindow\n    });\n\n    /**\n     * @file setup.js - Functions for setting up a player without\n     * user interaction based on the data-setup `attribute` of the video tag.\n     *\n     * @module setup\n     */\n    let _windowLoaded = false;\n    let videojs$1;\n\n    /**\n     * Set up any tags that have a data-setup `attribute` when the player is started.\n     */\n    const autoSetup = function () {\n        if (videojs$1.options.autoSetup === false) {\n            return;\n        }\n        const vids = Array.prototype.slice.call(document.getElementsByTagName('video'));\n        const audios = Array.prototype.slice.call(document.getElementsByTagName('audio'));\n        const divs = Array.prototype.slice.call(document.getElementsByTagName('video-js'));\n        const mediaEls = vids.concat(audios, divs);\n\n        // Check if any media elements exist\n        if (mediaEls && mediaEls.length > 0) {\n            for (let i = 0, e = mediaEls.length; i < e; i++) {\n                const mediaEl = mediaEls[i];\n\n                // Check if element exists, has getAttribute func.\n                if (mediaEl && mediaEl.getAttribute) {\n                    // Make sure this player hasn't already been set up.\n                    if (mediaEl.player === undefined) {\n                        const options = mediaEl.getAttribute('data-setup');\n\n                        // Check if data-setup attr exists.\n                        // We only auto-setup if they've added the data-setup attr.\n                        if (options !== null) {\n                            // Create new video.js instance.\n                            videojs$1(mediaEl);\n                        }\n                    }\n\n                    // If getAttribute isn't defined, we need to wait for the DOM.\n                } else {\n                    autoSetupTimeout(1);\n                    break;\n                }\n            }\n\n            // No videos were found, so keep looping unless page is finished loading.\n        } else if (!_windowLoaded) {\n            autoSetupTimeout(1);\n        }\n    };\n\n    /**\n     * Wait until the page is loaded before running autoSetup. This will be called in\n     * autoSetup if `hasLoaded` returns false.\n     *\n     * @param {number} wait\n     *        How long to wait in ms\n     *\n     * @param {module:videojs} [vjs]\n     *        The videojs library function\n     */\n    function autoSetupTimeout(wait, vjs) {\n        // Protect against breakage in non-browser environments\n        if (!isReal()) {\n            return;\n        }\n        if (vjs) {\n            videojs$1 = vjs;\n        }\n        window.setTimeout(autoSetup, wait);\n    }\n\n    /**\n     * Used to set the internal tracking of window loaded state to true.\n     *\n     * @private\n     */\n    function setWindowLoaded() {\n        _windowLoaded = true;\n        window.removeEventListener('load', setWindowLoaded);\n    }\n    if (isReal()) {\n        if (document.readyState === 'complete') {\n            setWindowLoaded();\n        } else {\n            /**\n             * Listen for the load event on window, and set _windowLoaded to true.\n             *\n             * We use a standard event listener here to avoid incrementing the GUID\n             * before any players are created.\n             *\n             * @listens load\n             */\n            window.addEventListener('load', setWindowLoaded);\n        }\n    }\n\n    /**\n     * @file stylesheet.js\n     * @module stylesheet\n     */\n\n    /**\n     * Create a DOM style element given a className for it.\n     *\n     * @param {string} className\n     *        The className to add to the created style element.\n     *\n     * @return {Element}\n     *         The element that was created.\n     */\n    const createStyleElement = function (className) {\n        const style = document.createElement('style');\n        style.className = className;\n        return style;\n    };\n\n    /**\n     * Add text to a DOM element.\n     *\n     * @param {Element} el\n     *        The Element to add text content to.\n     *\n     * @param {string} content\n     *        The text to add to the element.\n     */\n    const setTextContent = function (el, content) {\n        if (el.styleSheet) {\n            el.styleSheet.cssText = content;\n        } else {\n            el.textContent = content;\n        }\n    };\n\n    /**\n     * @file dom-data.js\n     * @module dom-data\n     */\n\n    /**\n     * Element Data Store.\n     *\n     * Allows for binding data to an element without putting it directly on the\n     * element. Ex. Event listeners are stored here.\n     * (also from jsninja.com, slightly modified and updated for closure compiler)\n     *\n     * @type {Object}\n     * @private\n     */\n    var DomData = new WeakMap();\n\n    /**\n     * @file guid.js\n     * @module guid\n     */\n\n        // Default value for GUIDs. This allows us to reset the GUID counter in tests.\n        //\n        // The initial GUID is 3 because some users have come to rely on the first\n        // default player ID ending up as `vjs_video_3`.\n        //\n        // See: https://github.com/videojs/video.js/pull/6216\n    const _initialGuid = 3;\n\n    /**\n     * Unique ID for an element or function\n     *\n     * @type {Number}\n     */\n    let _guid = _initialGuid;\n\n    /**\n     * Get a unique auto-incrementing ID by number that has not been returned before.\n     *\n     * @return {number}\n     *         A new unique ID.\n     */\n    function newGUID() {\n        return _guid++;\n    }\n\n    /**\n     * @file events.js. An Event System (John Resig - Secrets of a JS Ninja http://jsninja.com/)\n     * (Original book version wasn't completely usable, so fixed some things and made Closure Compiler compatible)\n     * This should work very similarly to jQuery's events, however it's based off the book version which isn't as\n     * robust as jquery's, so there's probably some differences.\n     *\n     * @file events.js\n     * @module events\n     */\n\n    /**\n     * Clean up the listener cache and dispatchers\n     *\n     * @param {Element|Object} elem\n     *        Element to clean up\n     *\n     * @param {string} type\n     *        Type of event to clean up\n     */\n    function _cleanUpEvents(elem, type) {\n        if (!DomData.has(elem)) {\n            return;\n        }\n        const data = DomData.get(elem);\n\n        // Remove the events of a particular type if there are none left\n        if (data.handlers[type].length === 0) {\n            delete data.handlers[type];\n            // data.handlers[type] = null;\n            // Setting to null was causing an error with data.handlers\n\n            // Remove the meta-handler from the element\n            if (elem.removeEventListener) {\n                elem.removeEventListener(type, data.dispatcher, false);\n            } else if (elem.detachEvent) {\n                elem.detachEvent('on' + type, data.dispatcher);\n            }\n        }\n\n        // Remove the events object if there are no types left\n        if (Object.getOwnPropertyNames(data.handlers).length <= 0) {\n            delete data.handlers;\n            delete data.dispatcher;\n            delete data.disabled;\n        }\n\n        // Finally remove the element data if there is no data left\n        if (Object.getOwnPropertyNames(data).length === 0) {\n            DomData.delete(elem);\n        }\n    }\n\n    /**\n     * Loops through an array of event types and calls the requested method for each type.\n     *\n     * @param {Function} fn\n     *        The event method we want to use.\n     *\n     * @param {Element|Object} elem\n     *        Element or object to bind listeners to\n     *\n     * @param {string[]} types\n     *        Type of event to bind to.\n     *\n     * @param {Function} callback\n     *        Event listener.\n     */\n    function _handleMultipleEvents(fn, elem, types, callback) {\n        types.forEach(function (type) {\n            // Call the event method for each one of the types\n            fn(elem, type, callback);\n        });\n    }\n\n    /**\n     * Fix a native event to have standard property values\n     *\n     * @param {Object} event\n     *        Event object to fix.\n     *\n     * @return {Object}\n     *         Fixed event object.\n     */\n    function fixEvent(event) {\n        if (event.fixed_) {\n            return event;\n        }\n        function returnTrue() {\n            return true;\n        }\n        function returnFalse() {\n            return false;\n        }\n\n        // Test if fixing up is needed\n        // Used to check if !event.stopPropagation instead of isPropagationStopped\n        // But native events return true for stopPropagation, but don't have\n        // other expected methods like isPropagationStopped. Seems to be a problem\n        // with the Javascript Ninja code. So we're just overriding all events now.\n        if (!event || !event.isPropagationStopped || !event.isImmediatePropagationStopped) {\n            const old = event || window.event;\n            event = {};\n            // Clone the old object so that we can modify the values event = {};\n            // IE8 Doesn't like when you mess with native event properties\n            // Firefox returns false for event.hasOwnProperty('type') and other props\n            //  which makes copying more difficult.\n            // TODO: Probably best to create a whitelist of event props\n            for (const key in old) {\n                // Safari 6.0.3 warns you if you try to copy deprecated layerX/Y\n                // Chrome warns you if you try to copy deprecated keyboardEvent.keyLocation\n                // and webkitMovementX/Y\n                // Lighthouse complains if Event.path is copied\n                if (key !== 'layerX' && key !== 'layerY' && key !== 'keyLocation' && key !== 'webkitMovementX' && key !== 'webkitMovementY' && key !== 'path') {\n                    // Chrome 32+ warns if you try to copy deprecated returnValue, but\n                    // we still want to if preventDefault isn't supported (IE8).\n                    if (!(key === 'returnValue' && old.preventDefault)) {\n                        event[key] = old[key];\n                    }\n                }\n            }\n\n            // The event occurred on this element\n            if (!event.target) {\n                event.target = event.srcElement || document;\n            }\n\n            // Handle which other element the event is related to\n            if (!event.relatedTarget) {\n                event.relatedTarget = event.fromElement === event.target ? event.toElement : event.fromElement;\n            }\n\n            // Stop the default browser action\n            event.preventDefault = function () {\n                if (old.preventDefault) {\n                    old.preventDefault();\n                }\n                event.returnValue = false;\n                old.returnValue = false;\n                event.defaultPrevented = true;\n            };\n            event.defaultPrevented = false;\n\n            // Stop the event from bubbling\n            event.stopPropagation = function () {\n                if (old.stopPropagation) {\n                    old.stopPropagation();\n                }\n                event.cancelBubble = true;\n                old.cancelBubble = true;\n                event.isPropagationStopped = returnTrue;\n            };\n            event.isPropagationStopped = returnFalse;\n\n            // Stop the event from bubbling and executing other handlers\n            event.stopImmediatePropagation = function () {\n                if (old.stopImmediatePropagation) {\n                    old.stopImmediatePropagation();\n                }\n                event.isImmediatePropagationStopped = returnTrue;\n                event.stopPropagation();\n            };\n            event.isImmediatePropagationStopped = returnFalse;\n\n            // Handle mouse position\n            if (event.clientX !== null && event.clientX !== undefined) {\n                const doc = document.documentElement;\n                const body = document.body;\n                event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc && doc.clientLeft || body && body.clientLeft || 0);\n                event.pageY = event.clientY + (doc && doc.scrollTop || body && body.scrollTop || 0) - (doc && doc.clientTop || body && body.clientTop || 0);\n            }\n\n            // Handle key presses\n            event.which = event.charCode || event.keyCode;\n\n            // Fix button for mouse clicks:\n            // 0 == left; 1 == middle; 2 == right\n            if (event.button !== null && event.button !== undefined) {\n                // The following is disabled because it does not pass videojs-standard\n                // and... yikes.\n                /* eslint-disable */\n                event.button = event.button & 1 ? 0 : event.button & 4 ? 1 : event.button & 2 ? 2 : 0;\n                /* eslint-enable */\n            }\n        }\n\n        event.fixed_ = true;\n        // Returns fixed-up instance\n        return event;\n    }\n\n    /**\n     * Whether passive event listeners are supported\n     */\n    let _supportsPassive;\n    const supportsPassive = function () {\n        if (typeof _supportsPassive !== 'boolean') {\n            _supportsPassive = false;\n            try {\n                const opts = Object.defineProperty({}, 'passive', {\n                    get() {\n                        _supportsPassive = true;\n                    }\n                });\n                window.addEventListener('test', null, opts);\n                window.removeEventListener('test', null, opts);\n            } catch (e) {\n                // disregard\n            }\n        }\n        return _supportsPassive;\n    };\n\n    /**\n     * Touch events Chrome expects to be passive\n     */\n    const passiveEvents = ['touchstart', 'touchmove'];\n\n    /**\n     * Add an event listener to element\n     * It stores the handler function in a separate cache object\n     * and adds a generic handler to the element's event,\n     * along with a unique id (guid) to the element.\n     *\n     * @param {Element|Object} elem\n     *        Element or object to bind listeners to\n     *\n     * @param {string|string[]} type\n     *        Type of event to bind to.\n     *\n     * @param {Function} fn\n     *        Event listener.\n     */\n    function on(elem, type, fn) {\n        if (Array.isArray(type)) {\n            return _handleMultipleEvents(on, elem, type, fn);\n        }\n        if (!DomData.has(elem)) {\n            DomData.set(elem, {});\n        }\n        const data = DomData.get(elem);\n\n        // We need a place to store all our handler data\n        if (!data.handlers) {\n            data.handlers = {};\n        }\n        if (!data.handlers[type]) {\n            data.handlers[type] = [];\n        }\n        if (!fn.guid) {\n            fn.guid = newGUID();\n        }\n        data.handlers[type].push(fn);\n        if (!data.dispatcher) {\n            data.disabled = false;\n            data.dispatcher = function (event, hash) {\n                if (data.disabled) {\n                    return;\n                }\n                event = fixEvent(event);\n                const handlers = data.handlers[event.type];\n                if (handlers) {\n                    // Copy handlers so if handlers are added/removed during the process it doesn't throw everything off.\n                    const handlersCopy = handlers.slice(0);\n                    for (let m = 0, n = handlersCopy.length; m < n; m++) {\n                        if (event.isImmediatePropagationStopped()) {\n                            break;\n                        } else {\n                            try {\n                                handlersCopy[m].call(elem, event, hash);\n                            } catch (e) {\n                                log$1.error(e);\n                            }\n                        }\n                    }\n                }\n            };\n        }\n        if (data.handlers[type].length === 1) {\n            if (elem.addEventListener) {\n                let options = false;\n                if (supportsPassive() && passiveEvents.indexOf(type) > -1) {\n                    options = {\n                        passive: true\n                    };\n                }\n                elem.addEventListener(type, data.dispatcher, options);\n            } else if (elem.attachEvent) {\n                elem.attachEvent('on' + type, data.dispatcher);\n            }\n        }\n    }\n\n    /**\n     * Removes event listeners from an element\n     *\n     * @param {Element|Object} elem\n     *        Object to remove listeners from.\n     *\n     * @param {string|string[]} [type]\n     *        Type of listener to remove. Don't include to remove all events from element.\n     *\n     * @param {Function} [fn]\n     *        Specific listener to remove. Don't include to remove listeners for an event\n     *        type.\n     */\n    function off(elem, type, fn) {\n        // Don't want to add a cache object through getElData if not needed\n        if (!DomData.has(elem)) {\n            return;\n        }\n        const data = DomData.get(elem);\n\n        // If no events exist, nothing to unbind\n        if (!data.handlers) {\n            return;\n        }\n        if (Array.isArray(type)) {\n            return _handleMultipleEvents(off, elem, type, fn);\n        }\n\n        // Utility function\n        const removeType = function (el, t) {\n            data.handlers[t] = [];\n            _cleanUpEvents(el, t);\n        };\n\n        // Are we removing all bound events?\n        if (type === undefined) {\n            for (const t in data.handlers) {\n                if (Object.prototype.hasOwnProperty.call(data.handlers || {}, t)) {\n                    removeType(elem, t);\n                }\n            }\n            return;\n        }\n        const handlers = data.handlers[type];\n\n        // If no handlers exist, nothing to unbind\n        if (!handlers) {\n            return;\n        }\n\n        // If no listener was provided, remove all listeners for type\n        if (!fn) {\n            removeType(elem, type);\n            return;\n        }\n\n        // We're only removing a single handler\n        if (fn.guid) {\n            for (let n = 0; n < handlers.length; n++) {\n                if (handlers[n].guid === fn.guid) {\n                    handlers.splice(n--, 1);\n                }\n            }\n        }\n        _cleanUpEvents(elem, type);\n    }\n\n    /**\n     * Trigger an event for an element\n     *\n     * @param {Element|Object} elem\n     *        Element to trigger an event on\n     *\n     * @param {EventTarget~Event|string} event\n     *        A string (the type) or an event object with a type attribute\n     *\n     * @param {Object} [hash]\n     *        data hash to pass along with the event\n     *\n     * @return {boolean|undefined}\n     *         Returns the opposite of `defaultPrevented` if default was\n     *         prevented. Otherwise, returns `undefined`\n     */\n    function trigger(elem, event, hash) {\n        // Fetches element data and a reference to the parent (for bubbling).\n        // Don't want to add a data object to cache for every parent,\n        // so checking hasElData first.\n        const elemData = DomData.has(elem) ? DomData.get(elem) : {};\n        const parent = elem.parentNode || elem.ownerDocument;\n        // type = event.type || event,\n        // handler;\n\n        // If an event name was passed as a string, creates an event out of it\n        if (typeof event === 'string') {\n            event = {\n                type: event,\n                target: elem\n            };\n        } else if (!event.target) {\n            event.target = elem;\n        }\n\n        // Normalizes the event properties.\n        event = fixEvent(event);\n\n        // If the passed element has a dispatcher, executes the established handlers.\n        if (elemData.dispatcher) {\n            elemData.dispatcher.call(elem, event, hash);\n        }\n\n        // Unless explicitly stopped or the event does not bubble (e.g. media events)\n        // recursively calls this function to bubble the event up the DOM.\n        if (parent && !event.isPropagationStopped() && event.bubbles === true) {\n            trigger.call(null, parent, event, hash);\n\n            // If at the top of the DOM, triggers the default action unless disabled.\n        } else if (!parent && !event.defaultPrevented && event.target && event.target[event.type]) {\n            if (!DomData.has(event.target)) {\n                DomData.set(event.target, {});\n            }\n            const targetData = DomData.get(event.target);\n\n            // Checks if the target has a default action for this event.\n            if (event.target[event.type]) {\n                // Temporarily disables event dispatching on the target as we have already executed the handler.\n                targetData.disabled = true;\n                // Executes the default action.\n                if (typeof event.target[event.type] === 'function') {\n                    event.target[event.type]();\n                }\n                // Re-enables event dispatching.\n                targetData.disabled = false;\n            }\n        }\n\n        // Inform the triggerer if the default was prevented by returning false\n        return !event.defaultPrevented;\n    }\n\n    /**\n     * Trigger a listener only once for an event.\n     *\n     * @param {Element|Object} elem\n     *        Element or object to bind to.\n     *\n     * @param {string|string[]} type\n     *        Name/type of event\n     *\n     * @param {Event~EventListener} fn\n     *        Event listener function\n     */\n    function one(elem, type, fn) {\n        if (Array.isArray(type)) {\n            return _handleMultipleEvents(one, elem, type, fn);\n        }\n        const func = function () {\n            off(elem, type, func);\n            fn.apply(this, arguments);\n        };\n\n        // copy the guid to the new function so it can removed using the original function's ID\n        func.guid = fn.guid = fn.guid || newGUID();\n        on(elem, type, func);\n    }\n\n    /**\n     * Trigger a listener only once and then turn if off for all\n     * configured events\n     *\n     * @param {Element|Object} elem\n     *        Element or object to bind to.\n     *\n     * @param {string|string[]} type\n     *        Name/type of event\n     *\n     * @param {Event~EventListener} fn\n     *        Event listener function\n     */\n    function any(elem, type, fn) {\n        const func = function () {\n            off(elem, type, func);\n            fn.apply(this, arguments);\n        };\n\n        // copy the guid to the new function so it can removed using the original function's ID\n        func.guid = fn.guid = fn.guid || newGUID();\n\n        // multiple ons, but one off for everything\n        on(elem, type, func);\n    }\n\n    var Events = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        fixEvent: fixEvent,\n        on: on,\n        off: off,\n        trigger: trigger,\n        one: one,\n        any: any\n    });\n\n    /**\n     * @file fn.js\n     * @module fn\n     */\n    const UPDATE_REFRESH_INTERVAL = 30;\n\n    /**\n     * A private, internal-only function for changing the context of a function.\n     *\n     * It also stores a unique id on the function so it can be easily removed from\n     * events.\n     *\n     * @private\n     * @function\n     * @param    {*} context\n     *           The object to bind as scope.\n     *\n     * @param    {Function} fn\n     *           The function to be bound to a scope.\n     *\n     * @param    {number} [uid]\n     *           An optional unique ID for the function to be set\n     *\n     * @return   {Function}\n     *           The new function that will be bound into the context given\n     */\n    const bind_ = function (context, fn, uid) {\n        // Make sure the function has a unique ID\n        if (!fn.guid) {\n            fn.guid = newGUID();\n        }\n\n        // Create the new function that changes the context\n        const bound = fn.bind(context);\n\n        // Allow for the ability to individualize this function\n        // Needed in the case where multiple objects might share the same prototype\n        // IF both items add an event listener with the same function, then you try to remove just one\n        // it will remove both because they both have the same guid.\n        // when using this, you need to use the bind method when you remove the listener as well.\n        // currently used in text tracks\n        bound.guid = uid ? uid + '_' + fn.guid : fn.guid;\n        return bound;\n    };\n\n    /**\n     * Wraps the given function, `fn`, with a new function that only invokes `fn`\n     * at most once per every `wait` milliseconds.\n     *\n     * @function\n     * @param    {Function} fn\n     *           The function to be throttled.\n     *\n     * @param    {number}   wait\n     *           The number of milliseconds by which to throttle.\n     *\n     * @return   {Function}\n     */\n    const throttle = function (fn, wait) {\n        let last = window.performance.now();\n        const throttled = function (...args) {\n            const now = window.performance.now();\n            if (now - last >= wait) {\n                fn(...args);\n                last = now;\n            }\n        };\n        return throttled;\n    };\n\n    /**\n     * Creates a debounced function that delays invoking `func` until after `wait`\n     * milliseconds have elapsed since the last time the debounced function was\n     * invoked.\n     *\n     * Inspired by lodash and underscore implementations.\n     *\n     * @function\n     * @param    {Function} func\n     *           The function to wrap with debounce behavior.\n     *\n     * @param    {number} wait\n     *           The number of milliseconds to wait after the last invocation.\n     *\n     * @param    {boolean} [immediate]\n     *           Whether or not to invoke the function immediately upon creation.\n     *\n     * @param    {Object} [context=window]\n     *           The \"context\" in which the debounced function should debounce. For\n     *           example, if this function should be tied to a Video.js player,\n     *           the player can be passed here. Alternatively, defaults to the\n     *           global `window` object.\n     *\n     * @return   {Function}\n     *           A debounced function.\n     */\n    const debounce = function (func, wait, immediate, context = window) {\n        let timeout;\n        const cancel = () => {\n            context.clearTimeout(timeout);\n            timeout = null;\n        };\n\n        /* eslint-disable consistent-this */\n        const debounced = function () {\n            const self = this;\n            const args = arguments;\n            let later = function () {\n                timeout = null;\n                later = null;\n                if (!immediate) {\n                    func.apply(self, args);\n                }\n            };\n            if (!timeout && immediate) {\n                func.apply(self, args);\n            }\n            context.clearTimeout(timeout);\n            timeout = context.setTimeout(later, wait);\n        };\n        /* eslint-enable consistent-this */\n\n        debounced.cancel = cancel;\n        return debounced;\n    };\n\n    var Fn = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        UPDATE_REFRESH_INTERVAL: UPDATE_REFRESH_INTERVAL,\n        bind_: bind_,\n        throttle: throttle,\n        debounce: debounce\n    });\n\n    /**\n     * @file src/js/event-target.js\n     */\n    let EVENT_MAP;\n\n    /**\n     * `EventTarget` is a class that can have the same API as the DOM `EventTarget`. It\n     * adds shorthand functions that wrap around lengthy functions. For example:\n     * the `on` function is a wrapper around `addEventListener`.\n     *\n     * @see [EventTarget Spec]{@link https://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-EventTarget}\n     * @class EventTarget\n     */\n    class EventTarget$2 {\n        /**\n         * Adds an `event listener` to an instance of an `EventTarget`. An `event listener` is a\n         * function that will get called when an event with a certain name gets triggered.\n         *\n         * @param {string|string[]} type\n         *        An event name or an array of event names.\n         *\n         * @param {Function} fn\n         *        The function to call with `EventTarget`s\n         */\n        on(type, fn) {\n            // Remove the addEventListener alias before calling Events.on\n            // so we don't get into an infinite type loop\n            const ael = this.addEventListener;\n            this.addEventListener = () => {};\n            on(this, type, fn);\n            this.addEventListener = ael;\n        }\n        /**\n         * Removes an `event listener` for a specific event from an instance of `EventTarget`.\n         * This makes it so that the `event listener` will no longer get called when the\n         * named event happens.\n         *\n         * @param {string|string[]} type\n         *        An event name or an array of event names.\n         *\n         * @param {Function} fn\n         *        The function to remove.\n         */\n        off(type, fn) {\n            off(this, type, fn);\n        }\n        /**\n         * This function will add an `event listener` that gets triggered only once. After the\n         * first trigger it will get removed. This is like adding an `event listener`\n         * with {@link EventTarget#on} that calls {@link EventTarget#off} on itself.\n         *\n         * @param {string|string[]} type\n         *        An event name or an array of event names.\n         *\n         * @param {Function} fn\n         *        The function to be called once for each event name.\n         */\n        one(type, fn) {\n            // Remove the addEventListener aliasing Events.on\n            // so we don't get into an infinite type loop\n            const ael = this.addEventListener;\n            this.addEventListener = () => {};\n            one(this, type, fn);\n            this.addEventListener = ael;\n        }\n        /**\n         * This function will add an `event listener` that gets triggered only once and is\n         * removed from all events. This is like adding an array of `event listener`s\n         * with {@link EventTarget#on} that calls {@link EventTarget#off} on all events the\n         * first time it is triggered.\n         *\n         * @param {string|string[]} type\n         *        An event name or an array of event names.\n         *\n         * @param {Function} fn\n         *        The function to be called once for each event name.\n         */\n        any(type, fn) {\n            // Remove the addEventListener aliasing Events.on\n            // so we don't get into an infinite type loop\n            const ael = this.addEventListener;\n            this.addEventListener = () => {};\n            any(this, type, fn);\n            this.addEventListener = ael;\n        }\n        /**\n         * This function causes an event to happen. This will then cause any `event listeners`\n         * that are waiting for that event, to get called. If there are no `event listeners`\n         * for an event then nothing will happen.\n         *\n         * If the name of the `Event` that is being triggered is in `EventTarget.allowedEvents_`.\n         * Trigger will also call the `on` + `uppercaseEventName` function.\n         *\n         * Example:\n         * 'click' is in `EventTarget.allowedEvents_`, so, trigger will attempt to call\n         * `onClick` if it exists.\n         *\n         * @param {string|EventTarget~Event|Object} event\n         *        The name of the event, an `Event`, or an object with a key of type set to\n         *        an event name.\n         */\n        trigger(event) {\n            const type = event.type || event;\n\n            // deprecation\n            // In a future version we should default target to `this`\n            // similar to how we default the target to `elem` in\n            // `Events.trigger`. Right now the default `target` will be\n            // `document` due to the `Event.fixEvent` call.\n            if (typeof event === 'string') {\n                event = {\n                    type\n                };\n            }\n            event = fixEvent(event);\n            if (this.allowedEvents_[type] && this['on' + type]) {\n                this['on' + type](event);\n            }\n            trigger(this, event);\n        }\n        queueTrigger(event) {\n            // only set up EVENT_MAP if it'll be used\n            if (!EVENT_MAP) {\n                EVENT_MAP = new Map();\n            }\n            const type = event.type || event;\n            let map = EVENT_MAP.get(this);\n            if (!map) {\n                map = new Map();\n                EVENT_MAP.set(this, map);\n            }\n            const oldTimeout = map.get(type);\n            map.delete(type);\n            window.clearTimeout(oldTimeout);\n            const timeout = window.setTimeout(() => {\n                map.delete(type);\n                // if we cleared out all timeouts for the current target, delete its map\n                if (map.size === 0) {\n                    map = null;\n                    EVENT_MAP.delete(this);\n                }\n                this.trigger(event);\n            }, 0);\n            map.set(type, timeout);\n        }\n    }\n\n    /**\n     * A Custom DOM event.\n     *\n     * @typedef {CustomEvent} Event\n     * @see [Properties]{@link https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent}\n     */\n\n    /**\n     * All event listeners should follow the following format.\n     *\n     * @callback EventListener\n     * @this {EventTarget}\n     *\n     * @param {Event} event\n     *        the event that triggered this function\n     *\n     * @param {Object} [hash]\n     *        hash of data sent during the event\n     */\n\n    /**\n     * An object containing event names as keys and booleans as values.\n     *\n     * > NOTE: If an event name is set to a true value here {@link EventTarget#trigger}\n     *         will have extra functionality. See that function for more information.\n     *\n     * @property EventTarget.prototype.allowedEvents_\n     * @protected\n     */\n    EventTarget$2.prototype.allowedEvents_ = {};\n\n    /**\n     * An alias of {@link EventTarget#on}. Allows `EventTarget` to mimic\n     * the standard DOM API.\n     *\n     * @function\n     * @see {@link EventTarget#on}\n     */\n    EventTarget$2.prototype.addEventListener = EventTarget$2.prototype.on;\n\n    /**\n     * An alias of {@link EventTarget#off}. Allows `EventTarget` to mimic\n     * the standard DOM API.\n     *\n     * @function\n     * @see {@link EventTarget#off}\n     */\n    EventTarget$2.prototype.removeEventListener = EventTarget$2.prototype.off;\n\n    /**\n     * An alias of {@link EventTarget#trigger}. Allows `EventTarget` to mimic\n     * the standard DOM API.\n     *\n     * @function\n     * @see {@link EventTarget#trigger}\n     */\n    EventTarget$2.prototype.dispatchEvent = EventTarget$2.prototype.trigger;\n\n    /**\n     * @file mixins/evented.js\n     * @module evented\n     */\n    const objName = obj => {\n        if (typeof obj.name === 'function') {\n            return obj.name();\n        }\n        if (typeof obj.name === 'string') {\n            return obj.name;\n        }\n        if (obj.name_) {\n            return obj.name_;\n        }\n        if (obj.constructor && obj.constructor.name) {\n            return obj.constructor.name;\n        }\n        return typeof obj;\n    };\n\n    /**\n     * Returns whether or not an object has had the evented mixin applied.\n     *\n     * @param  {Object} object\n     *         An object to test.\n     *\n     * @return {boolean}\n     *         Whether or not the object appears to be evented.\n     */\n    const isEvented = object => object instanceof EventTarget$2 || !!object.eventBusEl_ && ['on', 'one', 'off', 'trigger'].every(k => typeof object[k] === 'function');\n\n    /**\n     * Adds a callback to run after the evented mixin applied.\n     *\n     * @param  {Object} target\n     *         An object to Add\n     * @param  {Function} callback\n     *         The callback to run.\n     */\n    const addEventedCallback = (target, callback) => {\n        if (isEvented(target)) {\n            callback();\n        } else {\n            if (!target.eventedCallbacks) {\n                target.eventedCallbacks = [];\n            }\n            target.eventedCallbacks.push(callback);\n        }\n    };\n\n    /**\n     * Whether a value is a valid event type - non-empty string or array.\n     *\n     * @private\n     * @param  {string|Array} type\n     *         The type value to test.\n     *\n     * @return {boolean}\n     *         Whether or not the type is a valid event type.\n     */\n    const isValidEventType = type =>\n        // The regex here verifies that the `type` contains at least one non-\n        // whitespace character.\n        typeof type === 'string' && /\\S/.test(type) || Array.isArray(type) && !!type.length;\n\n    /**\n     * Validates a value to determine if it is a valid event target. Throws if not.\n     *\n     * @private\n     * @throws {Error}\n     *         If the target does not appear to be a valid event target.\n     *\n     * @param  {Object} target\n     *         The object to test.\n     *\n     * @param  {Object} obj\n     *         The evented object we are validating for\n     *\n     * @param  {string} fnName\n     *         The name of the evented mixin function that called this.\n     */\n    const validateTarget = (target, obj, fnName) => {\n        if (!target || !target.nodeName && !isEvented(target)) {\n            throw new Error(`Invalid target for ${objName(obj)}#${fnName}; must be a DOM node or evented object.`);\n        }\n    };\n\n    /**\n     * Validates a value to determine if it is a valid event target. Throws if not.\n     *\n     * @private\n     * @throws {Error}\n     *         If the type does not appear to be a valid event type.\n     *\n     * @param  {string|Array} type\n     *         The type to test.\n     *\n     * @param  {Object} obj\n     *         The evented object we are validating for\n     *\n     * @param  {string} fnName\n     *         The name of the evented mixin function that called this.\n     */\n    const validateEventType = (type, obj, fnName) => {\n        if (!isValidEventType(type)) {\n            throw new Error(`Invalid event type for ${objName(obj)}#${fnName}; must be a non-empty string or array.`);\n        }\n    };\n\n    /**\n     * Validates a value to determine if it is a valid listener. Throws if not.\n     *\n     * @private\n     * @throws {Error}\n     *         If the listener is not a function.\n     *\n     * @param  {Function} listener\n     *         The listener to test.\n     *\n     * @param  {Object} obj\n     *         The evented object we are validating for\n     *\n     * @param  {string} fnName\n     *         The name of the evented mixin function that called this.\n     */\n    const validateListener = (listener, obj, fnName) => {\n        if (typeof listener !== 'function') {\n            throw new Error(`Invalid listener for ${objName(obj)}#${fnName}; must be a function.`);\n        }\n    };\n\n    /**\n     * Takes an array of arguments given to `on()` or `one()`, validates them, and\n     * normalizes them into an object.\n     *\n     * @private\n     * @param  {Object} self\n     *         The evented object on which `on()` or `one()` was called. This\n     *         object will be bound as the `this` value for the listener.\n     *\n     * @param  {Array} args\n     *         An array of arguments passed to `on()` or `one()`.\n     *\n     * @param  {string} fnName\n     *         The name of the evented mixin function that called this.\n     *\n     * @return {Object}\n     *         An object containing useful values for `on()` or `one()` calls.\n     */\n    const normalizeListenArgs = (self, args, fnName) => {\n        // If the number of arguments is less than 3, the target is always the\n        // evented object itself.\n        const isTargetingSelf = args.length < 3 || args[0] === self || args[0] === self.eventBusEl_;\n        let target;\n        let type;\n        let listener;\n        if (isTargetingSelf) {\n            target = self.eventBusEl_;\n\n            // Deal with cases where we got 3 arguments, but we are still listening to\n            // the evented object itself.\n            if (args.length >= 3) {\n                args.shift();\n            }\n            [type, listener] = args;\n        } else {\n            [target, type, listener] = args;\n        }\n        validateTarget(target, self, fnName);\n        validateEventType(type, self, fnName);\n        validateListener(listener, self, fnName);\n        listener = bind_(self, listener);\n        return {\n            isTargetingSelf,\n            target,\n            type,\n            listener\n        };\n    };\n\n    /**\n     * Adds the listener to the event type(s) on the target, normalizing for\n     * the type of target.\n     *\n     * @private\n     * @param  {Element|Object} target\n     *         A DOM node or evented object.\n     *\n     * @param  {string} method\n     *         The event binding method to use (\"on\" or \"one\").\n     *\n     * @param  {string|Array} type\n     *         One or more event type(s).\n     *\n     * @param  {Function} listener\n     *         A listener function.\n     */\n    const listen = (target, method, type, listener) => {\n        validateTarget(target, target, method);\n        if (target.nodeName) {\n            Events[method](target, type, listener);\n        } else {\n            target[method](type, listener);\n        }\n    };\n\n    /**\n     * Contains methods that provide event capabilities to an object which is passed\n     * to {@link module:evented|evented}.\n     *\n     * @mixin EventedMixin\n     */\n    const EventedMixin = {\n        /**\n         * Add a listener to an event (or events) on this object or another evented\n         * object.\n         *\n         * @param  {string|Array|Element|Object} targetOrType\n         *         If this is a string or array, it represents the event type(s)\n         *         that will trigger the listener.\n         *\n         *         Another evented object can be passed here instead, which will\n         *         cause the listener to listen for events on _that_ object.\n         *\n         *         In either case, the listener's `this` value will be bound to\n         *         this object.\n         *\n         * @param  {string|Array|Function} typeOrListener\n         *         If the first argument was a string or array, this should be the\n         *         listener function. Otherwise, this is a string or array of event\n         *         type(s).\n         *\n         * @param  {Function} [listener]\n         *         If the first argument was another evented object, this will be\n         *         the listener function.\n         */\n        on(...args) {\n            const {\n                isTargetingSelf,\n                target,\n                type,\n                listener\n            } = normalizeListenArgs(this, args, 'on');\n            listen(target, 'on', type, listener);\n\n            // If this object is listening to another evented object.\n            if (!isTargetingSelf) {\n                // If this object is disposed, remove the listener.\n                const removeListenerOnDispose = () => this.off(target, type, listener);\n\n                // Use the same function ID as the listener so we can remove it later it\n                // using the ID of the original listener.\n                removeListenerOnDispose.guid = listener.guid;\n\n                // Add a listener to the target's dispose event as well. This ensures\n                // that if the target is disposed BEFORE this object, we remove the\n                // removal listener that was just added. Otherwise, we create a memory leak.\n                const removeRemoverOnTargetDispose = () => this.off('dispose', removeListenerOnDispose);\n\n                // Use the same function ID as the listener so we can remove it later\n                // it using the ID of the original listener.\n                removeRemoverOnTargetDispose.guid = listener.guid;\n                listen(this, 'on', 'dispose', removeListenerOnDispose);\n                listen(target, 'on', 'dispose', removeRemoverOnTargetDispose);\n            }\n        },\n        /**\n         * Add a listener to an event (or events) on this object or another evented\n         * object. The listener will be called once per event and then removed.\n         *\n         * @param  {string|Array|Element|Object} targetOrType\n         *         If this is a string or array, it represents the event type(s)\n         *         that will trigger the listener.\n         *\n         *         Another evented object can be passed here instead, which will\n         *         cause the listener to listen for events on _that_ object.\n         *\n         *         In either case, the listener's `this` value will be bound to\n         *         this object.\n         *\n         * @param  {string|Array|Function} typeOrListener\n         *         If the first argument was a string or array, this should be the\n         *         listener function. Otherwise, this is a string or array of event\n         *         type(s).\n         *\n         * @param  {Function} [listener]\n         *         If the first argument was another evented object, this will be\n         *         the listener function.\n         */\n        one(...args) {\n            const {\n                isTargetingSelf,\n                target,\n                type,\n                listener\n            } = normalizeListenArgs(this, args, 'one');\n\n            // Targeting this evented object.\n            if (isTargetingSelf) {\n                listen(target, 'one', type, listener);\n\n                // Targeting another evented object.\n            } else {\n                // TODO: This wrapper is incorrect! It should only\n                //       remove the wrapper for the event type that called it.\n                //       Instead all listeners are removed on the first trigger!\n                //       see https://github.com/videojs/video.js/issues/5962\n                const wrapper = (...largs) => {\n                    this.off(target, type, wrapper);\n                    listener.apply(null, largs);\n                };\n\n                // Use the same function ID as the listener so we can remove it later\n                // it using the ID of the original listener.\n                wrapper.guid = listener.guid;\n                listen(target, 'one', type, wrapper);\n            }\n        },\n        /**\n         * Add a listener to an event (or events) on this object or another evented\n         * object. The listener will only be called once for the first event that is triggered\n         * then removed.\n         *\n         * @param  {string|Array|Element|Object} targetOrType\n         *         If this is a string or array, it represents the event type(s)\n         *         that will trigger the listener.\n         *\n         *         Another evented object can be passed here instead, which will\n         *         cause the listener to listen for events on _that_ object.\n         *\n         *         In either case, the listener's `this` value will be bound to\n         *         this object.\n         *\n         * @param  {string|Array|Function} typeOrListener\n         *         If the first argument was a string or array, this should be the\n         *         listener function. Otherwise, this is a string or array of event\n         *         type(s).\n         *\n         * @param  {Function} [listener]\n         *         If the first argument was another evented object, this will be\n         *         the listener function.\n         */\n        any(...args) {\n            const {\n                isTargetingSelf,\n                target,\n                type,\n                listener\n            } = normalizeListenArgs(this, args, 'any');\n\n            // Targeting this evented object.\n            if (isTargetingSelf) {\n                listen(target, 'any', type, listener);\n\n                // Targeting another evented object.\n            } else {\n                const wrapper = (...largs) => {\n                    this.off(target, type, wrapper);\n                    listener.apply(null, largs);\n                };\n\n                // Use the same function ID as the listener so we can remove it later\n                // it using the ID of the original listener.\n                wrapper.guid = listener.guid;\n                listen(target, 'any', type, wrapper);\n            }\n        },\n        /**\n         * Removes listener(s) from event(s) on an evented object.\n         *\n         * @param  {string|Array|Element|Object} [targetOrType]\n         *         If this is a string or array, it represents the event type(s).\n         *\n         *         Another evented object can be passed here instead, in which case\n         *         ALL 3 arguments are _required_.\n         *\n         * @param  {string|Array|Function} [typeOrListener]\n         *         If the first argument was a string or array, this may be the\n         *         listener function. Otherwise, this is a string or array of event\n         *         type(s).\n         *\n         * @param  {Function} [listener]\n         *         If the first argument was another evented object, this will be\n         *         the listener function; otherwise, _all_ listeners bound to the\n         *         event type(s) will be removed.\n         */\n        off(targetOrType, typeOrListener, listener) {\n            // Targeting this evented object.\n            if (!targetOrType || isValidEventType(targetOrType)) {\n                off(this.eventBusEl_, targetOrType, typeOrListener);\n\n                // Targeting another evented object.\n            } else {\n                const target = targetOrType;\n                const type = typeOrListener;\n\n                // Fail fast and in a meaningful way!\n                validateTarget(target, this, 'off');\n                validateEventType(type, this, 'off');\n                validateListener(listener, this, 'off');\n\n                // Ensure there's at least a guid, even if the function hasn't been used\n                listener = bind_(this, listener);\n\n                // Remove the dispose listener on this evented object, which was given\n                // the same guid as the event listener in on().\n                this.off('dispose', listener);\n                if (target.nodeName) {\n                    off(target, type, listener);\n                    off(target, 'dispose', listener);\n                } else if (isEvented(target)) {\n                    target.off(type, listener);\n                    target.off('dispose', listener);\n                }\n            }\n        },\n        /**\n         * Fire an event on this evented object, causing its listeners to be called.\n         *\n         * @param   {string|Object} event\n         *          An event type or an object with a type property.\n         *\n         * @param   {Object} [hash]\n         *          An additional object to pass along to listeners.\n         *\n         * @return {boolean}\n         *          Whether or not the default behavior was prevented.\n         */\n        trigger(event, hash) {\n            validateTarget(this.eventBusEl_, this, 'trigger');\n            const type = event && typeof event !== 'string' ? event.type : event;\n            if (!isValidEventType(type)) {\n                throw new Error(`Invalid event type for ${objName(this)}#trigger; ` + 'must be a non-empty string or object with a type key that has a non-empty value.');\n            }\n            return trigger(this.eventBusEl_, event, hash);\n        }\n    };\n\n    /**\n     * Applies {@link module:evented~EventedMixin|EventedMixin} to a target object.\n     *\n     * @param  {Object} target\n     *         The object to which to add event methods.\n     *\n     * @param  {Object} [options={}]\n     *         Options for customizing the mixin behavior.\n     *\n     * @param  {string} [options.eventBusKey]\n     *         By default, adds a `eventBusEl_` DOM element to the target object,\n     *         which is used as an event bus. If the target object already has a\n     *         DOM element that should be used, pass its key here.\n     *\n     * @return {Object}\n     *         The target object.\n     */\n    function evented(target, options = {}) {\n        const {\n            eventBusKey\n        } = options;\n\n        // Set or create the eventBusEl_.\n        if (eventBusKey) {\n            if (!target[eventBusKey].nodeName) {\n                throw new Error(`The eventBusKey \"${eventBusKey}\" does not refer to an element.`);\n            }\n            target.eventBusEl_ = target[eventBusKey];\n        } else {\n            target.eventBusEl_ = createEl('span', {\n                className: 'vjs-event-bus'\n            });\n        }\n        Object.assign(target, EventedMixin);\n        if (target.eventedCallbacks) {\n            target.eventedCallbacks.forEach(callback => {\n                callback();\n            });\n        }\n\n        // When any evented object is disposed, it removes all its listeners.\n        target.on('dispose', () => {\n            target.off();\n            [target, target.el_, target.eventBusEl_].forEach(function (val) {\n                if (val && DomData.has(val)) {\n                    DomData.delete(val);\n                }\n            });\n            window.setTimeout(() => {\n                target.eventBusEl_ = null;\n            }, 0);\n        });\n        return target;\n    }\n\n    /**\n     * @file mixins/stateful.js\n     * @module stateful\n     */\n\n    /**\n     * Contains methods that provide statefulness to an object which is passed\n     * to {@link module:stateful}.\n     *\n     * @mixin StatefulMixin\n     */\n    const StatefulMixin = {\n        /**\n         * A hash containing arbitrary keys and values representing the state of\n         * the object.\n         *\n         * @type {Object}\n         */\n        state: {},\n        /**\n         * Set the state of an object by mutating its\n         * {@link module:stateful~StatefulMixin.state|state} object in place.\n         *\n         * @fires   module:stateful~StatefulMixin#statechanged\n         * @param   {Object|Function} stateUpdates\n         *          A new set of properties to shallow-merge into the plugin state.\n         *          Can be a plain object or a function returning a plain object.\n         *\n         * @return {Object|undefined}\n         *          An object containing changes that occurred. If no changes\n         *          occurred, returns `undefined`.\n         */\n        setState(stateUpdates) {\n            // Support providing the `stateUpdates` state as a function.\n            if (typeof stateUpdates === 'function') {\n                stateUpdates = stateUpdates();\n            }\n            let changes;\n            each(stateUpdates, (value, key) => {\n                // Record the change if the value is different from what's in the\n                // current state.\n                if (this.state[key] !== value) {\n                    changes = changes || {};\n                    changes[key] = {\n                        from: this.state[key],\n                        to: value\n                    };\n                }\n                this.state[key] = value;\n            });\n\n            // Only trigger \"statechange\" if there were changes AND we have a trigger\n            // function. This allows us to not require that the target object be an\n            // evented object.\n            if (changes && isEvented(this)) {\n                /**\n                 * An event triggered on an object that is both\n                 * {@link module:stateful|stateful} and {@link module:evented|evented}\n                 * indicating that its state has changed.\n                 *\n                 * @event    module:stateful~StatefulMixin#statechanged\n                 * @type     {Object}\n                 * @property {Object} changes\n                 *           A hash containing the properties that were changed and\n                 *           the values they were changed `from` and `to`.\n                 */\n                this.trigger({\n                    changes,\n                    type: 'statechanged'\n                });\n            }\n            return changes;\n        }\n    };\n\n    /**\n     * Applies {@link module:stateful~StatefulMixin|StatefulMixin} to a target\n     * object.\n     *\n     * If the target object is {@link module:evented|evented} and has a\n     * `handleStateChanged` method, that method will be automatically bound to the\n     * `statechanged` event on itself.\n     *\n     * @param   {Object} target\n     *          The object to be made stateful.\n     *\n     * @param   {Object} [defaultState]\n     *          A default set of properties to populate the newly-stateful object's\n     *          `state` property.\n     *\n     * @return {Object}\n     *          Returns the `target`.\n     */\n    function stateful(target, defaultState) {\n        Object.assign(target, StatefulMixin);\n\n        // This happens after the mixing-in because we need to replace the `state`\n        // added in that step.\n        target.state = Object.assign({}, target.state, defaultState);\n\n        // Auto-bind the `handleStateChanged` method of the target object if it exists.\n        if (typeof target.handleStateChanged === 'function' && isEvented(target)) {\n            target.on('statechanged', target.handleStateChanged);\n        }\n        return target;\n    }\n\n    /**\n     * @file str.js\n     * @module to-lower-case\n     */\n\n    /**\n     * Lowercase the first letter of a string.\n     *\n     * @param {string} string\n     *        String to be lowercased\n     *\n     * @return {string}\n     *         The string with a lowercased first letter\n     */\n    const toLowerCase = function (string) {\n        if (typeof string !== 'string') {\n            return string;\n        }\n        return string.replace(/./, w => w.toLowerCase());\n    };\n\n    /**\n     * Uppercase the first letter of a string.\n     *\n     * @param {string} string\n     *        String to be uppercased\n     *\n     * @return {string}\n     *         The string with an uppercased first letter\n     */\n    const toTitleCase$1 = function (string) {\n        if (typeof string !== 'string') {\n            return string;\n        }\n        return string.replace(/./, w => w.toUpperCase());\n    };\n\n    /**\n     * Compares the TitleCase versions of the two strings for equality.\n     *\n     * @param {string} str1\n     *        The first string to compare\n     *\n     * @param {string} str2\n     *        The second string to compare\n     *\n     * @return {boolean}\n     *         Whether the TitleCase versions of the strings are equal\n     */\n    const titleCaseEquals = function (str1, str2) {\n        return toTitleCase$1(str1) === toTitleCase$1(str2);\n    };\n\n    var Str = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        toLowerCase: toLowerCase,\n        toTitleCase: toTitleCase$1,\n        titleCaseEquals: titleCaseEquals\n    });\n\n    var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};\n\n    function unwrapExports (x) {\n        return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;\n    }\n\n    function createCommonjsModule(fn, module) {\n        return module = { exports: {} }, fn(module, module.exports), module.exports;\n    }\n\n    var keycode = createCommonjsModule(function (module, exports) {\n        // Source: http://jsfiddle.net/vWx8V/\n        // http://stackoverflow.com/questions/5603195/full-list-of-javascript-keycodes\n\n        /**\n         * Conenience method returns corresponding value for given keyName or keyCode.\n         *\n         * @param {Mixed} keyCode {Number} or keyName {String}\n         * @return {Mixed}\n         * @api public\n         */\n\n        function keyCode(searchInput) {\n            // Keyboard Events\n            if (searchInput && 'object' === typeof searchInput) {\n                var hasKeyCode = searchInput.which || searchInput.keyCode || searchInput.charCode;\n                if (hasKeyCode) searchInput = hasKeyCode;\n            }\n\n            // Numbers\n            if ('number' === typeof searchInput) return names[searchInput];\n\n            // Everything else (cast to string)\n            var search = String(searchInput);\n\n            // check codes\n            var foundNamedKey = codes[search.toLowerCase()];\n            if (foundNamedKey) return foundNamedKey;\n\n            // check aliases\n            var foundNamedKey = aliases[search.toLowerCase()];\n            if (foundNamedKey) return foundNamedKey;\n\n            // weird character?\n            if (search.length === 1) return search.charCodeAt(0);\n            return undefined;\n        }\n\n        /**\n         * Compares a keyboard event with a given keyCode or keyName.\n         *\n         * @param {Event} event Keyboard event that should be tested\n         * @param {Mixed} keyCode {Number} or keyName {String}\n         * @return {Boolean}\n         * @api public\n         */\n        keyCode.isEventKey = function isEventKey(event, nameOrCode) {\n            if (event && 'object' === typeof event) {\n                var keyCode = event.which || event.keyCode || event.charCode;\n                if (keyCode === null || keyCode === undefined) {\n                    return false;\n                }\n                if (typeof nameOrCode === 'string') {\n                    // check codes\n                    var foundNamedKey = codes[nameOrCode.toLowerCase()];\n                    if (foundNamedKey) {\n                        return foundNamedKey === keyCode;\n                    }\n\n                    // check aliases\n                    var foundNamedKey = aliases[nameOrCode.toLowerCase()];\n                    if (foundNamedKey) {\n                        return foundNamedKey === keyCode;\n                    }\n                } else if (typeof nameOrCode === 'number') {\n                    return nameOrCode === keyCode;\n                }\n                return false;\n            }\n        };\n        exports = module.exports = keyCode;\n\n        /**\n         * Get by name\n         *\n         *   exports.code['enter'] // => 13\n         */\n\n        var codes = exports.code = exports.codes = {\n            'backspace': 8,\n            'tab': 9,\n            'enter': 13,\n            'shift': 16,\n            'ctrl': 17,\n            'alt': 18,\n            'pause/break': 19,\n            'caps lock': 20,\n            'esc': 27,\n            'space': 32,\n            'page up': 33,\n            'page down': 34,\n            'end': 35,\n            'home': 36,\n            'left': 37,\n            'up': 38,\n            'right': 39,\n            'down': 40,\n            'insert': 45,\n            'delete': 46,\n            'command': 91,\n            'left command': 91,\n            'right command': 93,\n            'numpad *': 106,\n            'numpad +': 107,\n            'numpad -': 109,\n            'numpad .': 110,\n            'numpad /': 111,\n            'num lock': 144,\n            'scroll lock': 145,\n            'my computer': 182,\n            'my calculator': 183,\n            ';': 186,\n            '=': 187,\n            ',': 188,\n            '-': 189,\n            '.': 190,\n            '/': 191,\n            '`': 192,\n            '[': 219,\n            '\\\\': 220,\n            ']': 221,\n            \"'\": 222\n        };\n\n        // Helper aliases\n\n        var aliases = exports.aliases = {\n            'windows': 91,\n            '⇧': 16,\n            '⌥': 18,\n            '⌃': 17,\n            '⌘': 91,\n            'ctl': 17,\n            'control': 17,\n            'option': 18,\n            'pause': 19,\n            'break': 19,\n            'caps': 20,\n            'return': 13,\n            'escape': 27,\n            'spc': 32,\n            'spacebar': 32,\n            'pgup': 33,\n            'pgdn': 34,\n            'ins': 45,\n            'del': 46,\n            'cmd': 91\n        };\n\n        /*!\n     * Programatically add the following\n     */\n\n        // lower case chars\n        for (i = 97; i < 123; i++) codes[String.fromCharCode(i)] = i - 32;\n\n        // numbers\n        for (var i = 48; i < 58; i++) codes[i - 48] = i;\n\n        // function keys\n        for (i = 1; i < 13; i++) codes['f' + i] = i + 111;\n\n        // numpad keys\n        for (i = 0; i < 10; i++) codes['numpad ' + i] = i + 96;\n\n        /**\n         * Get by code\n         *\n         *   exports.name[13] // => 'Enter'\n         */\n\n        var names = exports.names = exports.title = {}; // title for backward compat\n\n        // Create reverse mapping\n        for (i in codes) names[codes[i]] = i;\n\n        // Add aliases\n        for (var alias in aliases) {\n            codes[alias] = aliases[alias];\n        }\n    });\n    keycode.code;\n    keycode.codes;\n    keycode.aliases;\n    keycode.names;\n    keycode.title;\n\n    /**\n     * Player Component - Base class for all UI objects\n     *\n     * @file component.js\n     */\n\n    /**\n     * Base class for all UI Components.\n     * Components are UI objects which represent both a javascript object and an element\n     * in the DOM. They can be children of other components, and can have\n     * children themselves.\n     *\n     * Components can also use methods from {@link EventTarget}\n     */\n    class Component$1 {\n        /**\n         * A callback that is called when a component is ready. Does not have any\n         * parameters and any callback value will be ignored.\n         *\n         * @callback ReadyCallback\n         * @this Component\n         */\n\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of component options.\n         *\n         * @param {Object[]} [options.children]\n         *        An array of children objects to initialize this component with. Children objects have\n         *        a name property that will be used if more than one component of the same type needs to be\n         *        added.\n         *\n         * @param  {string} [options.className]\n         *         A class or space separated list of classes to add the component\n         *\n         * @param {ReadyCallback} [ready]\n         *        Function that gets called when the `Component` is ready.\n         */\n        constructor(player, options, ready) {\n            // The component might be the player itself and we can't pass `this` to super\n            if (!player && this.play) {\n                this.player_ = player = this; // eslint-disable-line\n            } else {\n                this.player_ = player;\n            }\n            this.isDisposed_ = false;\n\n            // Hold the reference to the parent component via `addChild` method\n            this.parentComponent_ = null;\n\n            // Make a copy of prototype.options_ to protect against overriding defaults\n            this.options_ = merge$2({}, this.options_);\n\n            // Updated options with supplied options\n            options = this.options_ = merge$2(this.options_, options);\n\n            // Get ID from options or options element if one is supplied\n            this.id_ = options.id || options.el && options.el.id;\n\n            // If there was no ID from the options, generate one\n            if (!this.id_) {\n                // Don't require the player ID function in the case of mock players\n                const id = player && player.id && player.id() || 'no_player';\n                this.id_ = `${id}_component_${newGUID()}`;\n            }\n            this.name_ = options.name || null;\n\n            // Create element if one wasn't provided in options\n            if (options.el) {\n                this.el_ = options.el;\n            } else if (options.createEl !== false) {\n                this.el_ = this.createEl();\n            }\n            if (options.className && this.el_) {\n                options.className.split(' ').forEach(c => this.addClass(c));\n            }\n\n            // Remove the placeholder event methods. If the component is evented, the\n            // real methods are added next\n            ['on', 'off', 'one', 'any', 'trigger'].forEach(fn => {\n                this[fn] = undefined;\n            });\n\n            // if evented is anything except false, we want to mixin in evented\n            if (options.evented !== false) {\n                // Make this an evented object and use `el_`, if available, as its event bus\n                evented(this, {\n                    eventBusKey: this.el_ ? 'el_' : null\n                });\n                this.handleLanguagechange = this.handleLanguagechange.bind(this);\n                this.on(this.player_, 'languagechange', this.handleLanguagechange);\n            }\n            stateful(this, this.constructor.defaultState);\n            this.children_ = [];\n            this.childIndex_ = {};\n            this.childNameIndex_ = {};\n            this.setTimeoutIds_ = new Set();\n            this.setIntervalIds_ = new Set();\n            this.rafIds_ = new Set();\n            this.namedRafs_ = new Map();\n            this.clearingTimersOnDispose_ = false;\n\n            // Add any child components in options\n            if (options.initChildren !== false) {\n                this.initChildren();\n            }\n\n            // Don't want to trigger ready here or it will go before init is actually\n            // finished for all children that run this constructor\n            this.ready(ready);\n            if (options.reportTouchActivity !== false) {\n                this.enableTouchActivity();\n            }\n        }\n\n        // `on`, `off`, `one`, `any` and `trigger` are here so tsc includes them in definitions.\n        // They are replaced or removed in the constructor\n\n        /**\n         * Adds an `event listener` to an instance of an `EventTarget`. An `event listener` is a\n         * function that will get called when an event with a certain name gets triggered.\n         *\n         * @param {string|string[]} type\n         *        An event name or an array of event names.\n         *\n         * @param {Function} fn\n         *        The function to call with `EventTarget`s\n         */\n        on(type, fn) {}\n\n        /**\n         * Removes an `event listener` for a specific event from an instance of `EventTarget`.\n         * This makes it so that the `event listener` will no longer get called when the\n         * named event happens.\n         *\n         * @param {string|string[]} type\n         *        An event name or an array of event names.\n         *\n         * @param {Function} [fn]\n         *        The function to remove. If not specified, all listeners managed by Video.js will be removed.\n         */\n        off(type, fn) {}\n\n        /**\n         * This function will add an `event listener` that gets triggered only once. After the\n         * first trigger it will get removed. This is like adding an `event listener`\n         * with {@link EventTarget#on} that calls {@link EventTarget#off} on itself.\n         *\n         * @param {string|string[]} type\n         *        An event name or an array of event names.\n         *\n         * @param {Function} fn\n         *        The function to be called once for each event name.\n         */\n        one(type, fn) {}\n\n        /**\n         * This function will add an `event listener` that gets triggered only once and is\n         * removed from all events. This is like adding an array of `event listener`s\n         * with {@link EventTarget#on} that calls {@link EventTarget#off} on all events the\n         * first time it is triggered.\n         *\n         * @param {string|string[]} type\n         *        An event name or an array of event names.\n         *\n         * @param {Function} fn\n         *        The function to be called once for each event name.\n         */\n        any(type, fn) {}\n\n        /**\n         * This function causes an event to happen. This will then cause any `event listeners`\n         * that are waiting for that event, to get called. If there are no `event listeners`\n         * for an event then nothing will happen.\n         *\n         * If the name of the `Event` that is being triggered is in `EventTarget.allowedEvents_`.\n         * Trigger will also call the `on` + `uppercaseEventName` function.\n         *\n         * Example:\n         * 'click' is in `EventTarget.allowedEvents_`, so, trigger will attempt to call\n         * `onClick` if it exists.\n         *\n         * @param {string|Event|Object} event\n         *        The name of the event, an `Event`, or an object with a key of type set to\n         *        an event name.\n         *\n         * @param {Object} [hash]\n         *        Optionally extra argument to pass through to an event listener\n         */\n        trigger(event, hash) {}\n\n        /**\n         * Dispose of the `Component` and all child components.\n         *\n         * @fires Component#dispose\n         *\n         * @param {Object} options\n         * @param {Element} options.originalEl element with which to replace player element\n         */\n        dispose(options = {}) {\n            // Bail out if the component has already been disposed.\n            if (this.isDisposed_) {\n                return;\n            }\n            if (this.readyQueue_) {\n                this.readyQueue_.length = 0;\n            }\n\n            /**\n             * Triggered when a `Component` is disposed.\n             *\n             * @event Component#dispose\n             * @type {Event}\n             *\n             * @property {boolean} [bubbles=false]\n             *           set to false so that the dispose event does not\n             *           bubble up\n             */\n            this.trigger({\n                type: 'dispose',\n                bubbles: false\n            });\n            this.isDisposed_ = true;\n\n            // Dispose all children.\n            if (this.children_) {\n                for (let i = this.children_.length - 1; i >= 0; i--) {\n                    if (this.children_[i].dispose) {\n                        this.children_[i].dispose();\n                    }\n                }\n            }\n\n            // Delete child references\n            this.children_ = null;\n            this.childIndex_ = null;\n            this.childNameIndex_ = null;\n            this.parentComponent_ = null;\n            if (this.el_) {\n                // Remove element from DOM\n                if (this.el_.parentNode) {\n                    if (options.restoreEl) {\n                        this.el_.parentNode.replaceChild(options.restoreEl, this.el_);\n                    } else {\n                        this.el_.parentNode.removeChild(this.el_);\n                    }\n                }\n                this.el_ = null;\n            }\n\n            // remove reference to the player after disposing of the element\n            this.player_ = null;\n        }\n\n        /**\n         * Determine whether or not this component has been disposed.\n         *\n         * @return {boolean}\n         *         If the component has been disposed, will be `true`. Otherwise, `false`.\n         */\n        isDisposed() {\n            return Boolean(this.isDisposed_);\n        }\n\n        /**\n         * Return the {@link Player} that the `Component` has attached to.\n         *\n         * @return { import('./player').default }\n         *         The player that this `Component` has attached to.\n         */\n        player() {\n            return this.player_;\n        }\n\n        /**\n         * Deep merge of options objects with new options.\n         * > Note: When both `obj` and `options` contain properties whose values are objects.\n         *         The two properties get merged using {@link module:obj.merge}\n         *\n         * @param {Object} obj\n         *        The object that contains new options.\n         *\n         * @return {Object}\n         *         A new object of `this.options_` and `obj` merged together.\n         */\n        options(obj) {\n            if (!obj) {\n                return this.options_;\n            }\n            this.options_ = merge$2(this.options_, obj);\n            return this.options_;\n        }\n\n        /**\n         * Get the `Component`s DOM element\n         *\n         * @return {Element}\n         *         The DOM element for this `Component`.\n         */\n        el() {\n            return this.el_;\n        }\n\n        /**\n         * Create the `Component`s DOM element.\n         *\n         * @param {string} [tagName]\n         *        Element's DOM node type. e.g. 'div'\n         *\n         * @param {Object} [properties]\n         *        An object of properties that should be set.\n         *\n         * @param {Object} [attributes]\n         *        An object of attributes that should be set.\n         *\n         * @return {Element}\n         *         The element that gets created.\n         */\n        createEl(tagName, properties, attributes) {\n            return createEl(tagName, properties, attributes);\n        }\n\n        /**\n         * Localize a string given the string in english.\n         *\n         * If tokens are provided, it'll try and run a simple token replacement on the provided string.\n         * The tokens it looks for look like `{1}` with the index being 1-indexed into the tokens array.\n         *\n         * If a `defaultValue` is provided, it'll use that over `string`,\n         * if a value isn't found in provided language files.\n         * This is useful if you want to have a descriptive key for token replacement\n         * but have a succinct localized string and not require `en.json` to be included.\n         *\n         * Currently, it is used for the progress bar timing.\n         * ```js\n         * {\n         *   \"progress bar timing: currentTime={1} duration={2}\": \"{1} of {2}\"\n         * }\n         * ```\n         * It is then used like so:\n         * ```js\n         * this.localize('progress bar timing: currentTime={1} duration{2}',\n         *               [this.player_.currentTime(), this.player_.duration()],\n         *               '{1} of {2}');\n         * ```\n         *\n         * Which outputs something like: `01:23 of 24:56`.\n         *\n         *\n         * @param {string} string\n         *        The string to localize and the key to lookup in the language files.\n         * @param {string[]} [tokens]\n         *        If the current item has token replacements, provide the tokens here.\n         * @param {string} [defaultValue]\n         *        Defaults to `string`. Can be a default value to use for token replacement\n         *        if the lookup key is needed to be separate.\n         *\n         * @return {string}\n         *         The localized string or if no localization exists the english string.\n         */\n        localize(string, tokens, defaultValue = string) {\n            const code = this.player_.language && this.player_.language();\n            const languages = this.player_.languages && this.player_.languages();\n            const language = languages && languages[code];\n            const primaryCode = code && code.split('-')[0];\n            const primaryLang = languages && languages[primaryCode];\n            let localizedString = defaultValue;\n            if (language && language[string]) {\n                localizedString = language[string];\n            } else if (primaryLang && primaryLang[string]) {\n                localizedString = primaryLang[string];\n            }\n            if (tokens) {\n                localizedString = localizedString.replace(/\\{(\\d+)\\}/g, function (match, index) {\n                    const value = tokens[index - 1];\n                    let ret = value;\n                    if (typeof value === 'undefined') {\n                        ret = match;\n                    }\n                    return ret;\n                });\n            }\n            return localizedString;\n        }\n\n        /**\n         * Handles language change for the player in components. Should be overridden by sub-components.\n         *\n         * @abstract\n         */\n        handleLanguagechange() {}\n\n        /**\n         * Return the `Component`s DOM element. This is where children get inserted.\n         * This will usually be the the same as the element returned in {@link Component#el}.\n         *\n         * @return {Element}\n         *         The content element for this `Component`.\n         */\n        contentEl() {\n            return this.contentEl_ || this.el_;\n        }\n\n        /**\n         * Get this `Component`s ID\n         *\n         * @return {string}\n         *         The id of this `Component`\n         */\n        id() {\n            return this.id_;\n        }\n\n        /**\n         * Get the `Component`s name. The name gets used to reference the `Component`\n         * and is set during registration.\n         *\n         * @return {string}\n         *         The name of this `Component`.\n         */\n        name() {\n            return this.name_;\n        }\n\n        /**\n         * Get an array of all child components\n         *\n         * @return {Array}\n         *         The children\n         */\n        children() {\n            return this.children_;\n        }\n\n        /**\n         * Returns the child `Component` with the given `id`.\n         *\n         * @param {string} id\n         *        The id of the child `Component` to get.\n         *\n         * @return {Component|undefined}\n         *         The child `Component` with the given `id` or undefined.\n         */\n        getChildById(id) {\n            return this.childIndex_[id];\n        }\n\n        /**\n         * Returns the child `Component` with the given `name`.\n         *\n         * @param {string} name\n         *        The name of the child `Component` to get.\n         *\n         * @return {Component|undefined}\n         *         The child `Component` with the given `name` or undefined.\n         */\n        getChild(name) {\n            if (!name) {\n                return;\n            }\n            return this.childNameIndex_[name];\n        }\n\n        /**\n         * Returns the descendant `Component` following the givent\n         * descendant `names`. For instance ['foo', 'bar', 'baz'] would\n         * try to get 'foo' on the current component, 'bar' on the 'foo'\n         * component and 'baz' on the 'bar' component and return undefined\n         * if any of those don't exist.\n         *\n         * @param {...string[]|...string} names\n         *        The name of the child `Component` to get.\n         *\n         * @return {Component|undefined}\n         *         The descendant `Component` following the given descendant\n         *         `names` or undefined.\n         */\n        getDescendant(...names) {\n            // flatten array argument into the main array\n            names = names.reduce((acc, n) => acc.concat(n), []);\n            let currentChild = this;\n            for (let i = 0; i < names.length; i++) {\n                currentChild = currentChild.getChild(names[i]);\n                if (!currentChild || !currentChild.getChild) {\n                    return;\n                }\n            }\n            return currentChild;\n        }\n\n        /**\n         * Adds an SVG icon element to another element or component.\n         *\n         * @param {string} iconName\n         *        The name of icon. A list of all the icon names can be found at 'sandbox/svg-icons.html'\n         *\n         * @param {Element} [el=this.el()]\n         *        Element to set the title on. Defaults to the current Component's element.\n         *\n         * @return {Element}\n         *        The newly created icon element.\n         */\n        setIcon(iconName, el = this.el()) {\n            // TODO: In v9 of video.js, we will want to remove font icons entirely.\n            // This means this check, as well as the others throughout the code, and\n            // the unecessary CSS for font icons, will need to be removed.\n            // See https://github.com/videojs/video.js/pull/8260 as to which components\n            // need updating.\n            if (!this.player_.options_.experimentalSvgIcons) {\n                return;\n            }\n            const xmlnsURL = 'http://www.w3.org/2000/svg';\n\n            // The below creates an element in the format of:\n            // <span><svg><use>....</use></svg></span>\n            const iconContainer = createEl('span', {\n                className: 'vjs-icon-placeholder vjs-svg-icon'\n            }, {\n                'aria-hidden': 'true'\n            });\n            const svgEl = document.createElementNS(xmlnsURL, 'svg');\n            svgEl.setAttributeNS(null, 'viewBox', '0 0 512 512');\n            const useEl = document.createElementNS(xmlnsURL, 'use');\n            svgEl.appendChild(useEl);\n            useEl.setAttributeNS(null, 'href', `#vjs-icon-${iconName}`);\n            iconContainer.appendChild(svgEl);\n\n            // Replace a pre-existing icon if one exists.\n            if (this.iconIsSet_) {\n                el.replaceChild(iconContainer, el.querySelector('.vjs-icon-placeholder'));\n            } else {\n                el.appendChild(iconContainer);\n            }\n            this.iconIsSet_ = true;\n            return iconContainer;\n        }\n\n        /**\n         * Add a child `Component` inside the current `Component`.\n         *\n         * @param {string|Component} child\n         *        The name or instance of a child to add.\n         *\n         * @param {Object} [options={}]\n         *        The key/value store of options that will get passed to children of\n         *        the child.\n         *\n         * @param {number} [index=this.children_.length]\n         *        The index to attempt to add a child into.\n         *\n         *\n         * @return {Component}\n         *         The `Component` that gets added as a child. When using a string the\n         *         `Component` will get created by this process.\n         */\n        addChild(child, options = {}, index = this.children_.length) {\n            let component;\n            let componentName;\n\n            // If child is a string, create component with options\n            if (typeof child === 'string') {\n                componentName = toTitleCase$1(child);\n                const componentClassName = options.componentClass || componentName;\n\n                // Set name through options\n                options.name = componentName;\n\n                // Create a new object & element for this controls set\n                // If there's no .player_, this is a player\n                const ComponentClass = Component$1.getComponent(componentClassName);\n                if (!ComponentClass) {\n                    throw new Error(`Component ${componentClassName} does not exist`);\n                }\n\n                // data stored directly on the videojs object may be\n                // misidentified as a component to retain\n                // backwards-compatibility with 4.x. check to make sure the\n                // component class can be instantiated.\n                if (typeof ComponentClass !== 'function') {\n                    return null;\n                }\n                component = new ComponentClass(this.player_ || this, options);\n\n                // child is a component instance\n            } else {\n                component = child;\n            }\n            if (component.parentComponent_) {\n                component.parentComponent_.removeChild(component);\n            }\n            this.children_.splice(index, 0, component);\n            component.parentComponent_ = this;\n            if (typeof component.id === 'function') {\n                this.childIndex_[component.id()] = component;\n            }\n\n            // If a name wasn't used to create the component, check if we can use the\n            // name function of the component\n            componentName = componentName || component.name && toTitleCase$1(component.name());\n            if (componentName) {\n                this.childNameIndex_[componentName] = component;\n                this.childNameIndex_[toLowerCase(componentName)] = component;\n            }\n\n            // Add the UI object's element to the container div (box)\n            // Having an element is not required\n            if (typeof component.el === 'function' && component.el()) {\n                // If inserting before a component, insert before that component's element\n                let refNode = null;\n                if (this.children_[index + 1]) {\n                    // Most children are components, but the video tech is an HTML element\n                    if (this.children_[index + 1].el_) {\n                        refNode = this.children_[index + 1].el_;\n                    } else if (isEl(this.children_[index + 1])) {\n                        refNode = this.children_[index + 1];\n                    }\n                }\n                this.contentEl().insertBefore(component.el(), refNode);\n            }\n\n            // Return so it can stored on parent object if desired.\n            return component;\n        }\n\n        /**\n         * Remove a child `Component` from this `Component`s list of children. Also removes\n         * the child `Component`s element from this `Component`s element.\n         *\n         * @param {Component} component\n         *        The child `Component` to remove.\n         */\n        removeChild(component) {\n            if (typeof component === 'string') {\n                component = this.getChild(component);\n            }\n            if (!component || !this.children_) {\n                return;\n            }\n            let childFound = false;\n            for (let i = this.children_.length - 1; i >= 0; i--) {\n                if (this.children_[i] === component) {\n                    childFound = true;\n                    this.children_.splice(i, 1);\n                    break;\n                }\n            }\n            if (!childFound) {\n                return;\n            }\n            component.parentComponent_ = null;\n            this.childIndex_[component.id()] = null;\n            this.childNameIndex_[toTitleCase$1(component.name())] = null;\n            this.childNameIndex_[toLowerCase(component.name())] = null;\n            const compEl = component.el();\n            if (compEl && compEl.parentNode === this.contentEl()) {\n                this.contentEl().removeChild(component.el());\n            }\n        }\n\n        /**\n         * Add and initialize default child `Component`s based upon options.\n         */\n        initChildren() {\n            const children = this.options_.children;\n            if (children) {\n                // `this` is `parent`\n                const parentOptions = this.options_;\n                const handleAdd = child => {\n                    const name = child.name;\n                    let opts = child.opts;\n\n                    // Allow options for children to be set at the parent options\n                    // e.g. videojs(id, { controlBar: false });\n                    // instead of videojs(id, { children: { controlBar: false });\n                    if (parentOptions[name] !== undefined) {\n                        opts = parentOptions[name];\n                    }\n\n                    // Allow for disabling default components\n                    // e.g. options['children']['posterImage'] = false\n                    if (opts === false) {\n                        return;\n                    }\n\n                    // Allow options to be passed as a simple boolean if no configuration\n                    // is necessary.\n                    if (opts === true) {\n                        opts = {};\n                    }\n\n                    // We also want to pass the original player options\n                    // to each component as well so they don't need to\n                    // reach back into the player for options later.\n                    opts.playerOptions = this.options_.playerOptions;\n\n                    // Create and add the child component.\n                    // Add a direct reference to the child by name on the parent instance.\n                    // If two of the same component are used, different names should be supplied\n                    // for each\n                    const newChild = this.addChild(name, opts);\n                    if (newChild) {\n                        this[name] = newChild;\n                    }\n                };\n\n                // Allow for an array of children details to passed in the options\n                let workingChildren;\n                const Tech = Component$1.getComponent('Tech');\n                if (Array.isArray(children)) {\n                    workingChildren = children;\n                } else {\n                    workingChildren = Object.keys(children);\n                }\n                workingChildren\n                    // children that are in this.options_ but also in workingChildren  would\n                    // give us extra children we do not want. So, we want to filter them out.\n                    .concat(Object.keys(this.options_).filter(function (child) {\n                        return !workingChildren.some(function (wchild) {\n                            if (typeof wchild === 'string') {\n                                return child === wchild;\n                            }\n                            return child === wchild.name;\n                        });\n                    })).map(child => {\n                    let name;\n                    let opts;\n                    if (typeof child === 'string') {\n                        name = child;\n                        opts = children[name] || this.options_[name] || {};\n                    } else {\n                        name = child.name;\n                        opts = child;\n                    }\n                    return {\n                        name,\n                        opts\n                    };\n                }).filter(child => {\n                    // we have to make sure that child.name isn't in the techOrder since\n                    // techs are registered as Components but can't aren't compatible\n                    // See https://github.com/videojs/video.js/issues/2772\n                    const c = Component$1.getComponent(child.opts.componentClass || toTitleCase$1(child.name));\n                    return c && !Tech.isTech(c);\n                }).forEach(handleAdd);\n            }\n        }\n\n        /**\n         * Builds the default DOM class name. Should be overridden by sub-components.\n         *\n         * @return {string}\n         *         The DOM class name for this object.\n         *\n         * @abstract\n         */\n        buildCSSClass() {\n            // Child classes can include a function that does:\n            // return 'CLASS NAME' + this._super();\n            return '';\n        }\n\n        /**\n         * Bind a listener to the component's ready state.\n         * Different from event listeners in that if the ready event has already happened\n         * it will trigger the function immediately.\n         *\n         * @param {ReadyCallback} fn\n         *        Function that gets called when the `Component` is ready.\n         *\n         * @return {Component}\n         *         Returns itself; method can be chained.\n         */\n        ready(fn, sync = false) {\n            if (!fn) {\n                return;\n            }\n            if (!this.isReady_) {\n                this.readyQueue_ = this.readyQueue_ || [];\n                this.readyQueue_.push(fn);\n                return;\n            }\n            if (sync) {\n                fn.call(this);\n            } else {\n                // Call the function asynchronously by default for consistency\n                this.setTimeout(fn, 1);\n            }\n        }\n\n        /**\n         * Trigger all the ready listeners for this `Component`.\n         *\n         * @fires Component#ready\n         */\n        triggerReady() {\n            this.isReady_ = true;\n\n            // Ensure ready is triggered asynchronously\n            this.setTimeout(function () {\n                const readyQueue = this.readyQueue_;\n\n                // Reset Ready Queue\n                this.readyQueue_ = [];\n                if (readyQueue && readyQueue.length > 0) {\n                    readyQueue.forEach(function (fn) {\n                        fn.call(this);\n                    }, this);\n                }\n\n                // Allow for using event listeners also\n                /**\n                 * Triggered when a `Component` is ready.\n                 *\n                 * @event Component#ready\n                 * @type {Event}\n                 */\n                this.trigger('ready');\n            }, 1);\n        }\n\n        /**\n         * Find a single DOM element matching a `selector`. This can be within the `Component`s\n         * `contentEl()` or another custom context.\n         *\n         * @param {string} selector\n         *        A valid CSS selector, which will be passed to `querySelector`.\n         *\n         * @param {Element|string} [context=this.contentEl()]\n         *        A DOM element within which to query. Can also be a selector string in\n         *        which case the first matching element will get used as context. If\n         *        missing `this.contentEl()` gets used. If  `this.contentEl()` returns\n         *        nothing it falls back to `document`.\n         *\n         * @return {Element|null}\n         *         the dom element that was found, or null\n         *\n         * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors)\n         */\n        $(selector, context) {\n            return $(selector, context || this.contentEl());\n        }\n\n        /**\n         * Finds all DOM element matching a `selector`. This can be within the `Component`s\n         * `contentEl()` or another custom context.\n         *\n         * @param {string} selector\n         *        A valid CSS selector, which will be passed to `querySelectorAll`.\n         *\n         * @param {Element|string} [context=this.contentEl()]\n         *        A DOM element within which to query. Can also be a selector string in\n         *        which case the first matching element will get used as context. If\n         *        missing `this.contentEl()` gets used. If  `this.contentEl()` returns\n         *        nothing it falls back to `document`.\n         *\n         * @return {NodeList}\n         *         a list of dom elements that were found\n         *\n         * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors)\n         */\n        $$(selector, context) {\n            return $$(selector, context || this.contentEl());\n        }\n\n        /**\n         * Check if a component's element has a CSS class name.\n         *\n         * @param {string} classToCheck\n         *        CSS class name to check.\n         *\n         * @return {boolean}\n         *         - True if the `Component` has the class.\n         *         - False if the `Component` does not have the class`\n         */\n        hasClass(classToCheck) {\n            return hasClass(this.el_, classToCheck);\n        }\n\n        /**\n         * Add a CSS class name to the `Component`s element.\n         *\n         * @param {...string} classesToAdd\n         *        One or more CSS class name to add.\n         */\n        addClass(...classesToAdd) {\n            addClass(this.el_, ...classesToAdd);\n        }\n\n        /**\n         * Remove a CSS class name from the `Component`s element.\n         *\n         * @param {...string} classesToRemove\n         *        One or more CSS class name to remove.\n         */\n        removeClass(...classesToRemove) {\n            removeClass(this.el_, ...classesToRemove);\n        }\n\n        /**\n         * Add or remove a CSS class name from the component's element.\n         * - `classToToggle` gets added when {@link Component#hasClass} would return false.\n         * - `classToToggle` gets removed when {@link Component#hasClass} would return true.\n         *\n         * @param  {string} classToToggle\n         *         The class to add or remove based on (@link Component#hasClass}\n         *\n         * @param  {boolean|Dom~predicate} [predicate]\n         *         An {@link Dom~predicate} function or a boolean\n         */\n        toggleClass(classToToggle, predicate) {\n            toggleClass(this.el_, classToToggle, predicate);\n        }\n\n        /**\n         * Show the `Component`s element if it is hidden by removing the\n         * 'vjs-hidden' class name from it.\n         */\n        show() {\n            this.removeClass('vjs-hidden');\n        }\n\n        /**\n         * Hide the `Component`s element if it is currently showing by adding the\n         * 'vjs-hidden` class name to it.\n         */\n        hide() {\n            this.addClass('vjs-hidden');\n        }\n\n        /**\n         * Lock a `Component`s element in its visible state by adding the 'vjs-lock-showing'\n         * class name to it. Used during fadeIn/fadeOut.\n         *\n         * @private\n         */\n        lockShowing() {\n            this.addClass('vjs-lock-showing');\n        }\n\n        /**\n         * Unlock a `Component`s element from its visible state by removing the 'vjs-lock-showing'\n         * class name from it. Used during fadeIn/fadeOut.\n         *\n         * @private\n         */\n        unlockShowing() {\n            this.removeClass('vjs-lock-showing');\n        }\n\n        /**\n         * Get the value of an attribute on the `Component`s element.\n         *\n         * @param {string} attribute\n         *        Name of the attribute to get the value from.\n         *\n         * @return {string|null}\n         *         - The value of the attribute that was asked for.\n         *         - Can be an empty string on some browsers if the attribute does not exist\n         *           or has no value\n         *         - Most browsers will return null if the attribute does not exist or has\n         *           no value.\n         *\n         * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/getAttribute}\n         */\n        getAttribute(attribute) {\n            return getAttribute(this.el_, attribute);\n        }\n\n        /**\n         * Set the value of an attribute on the `Component`'s element\n         *\n         * @param {string} attribute\n         *        Name of the attribute to set.\n         *\n         * @param {string} value\n         *        Value to set the attribute to.\n         *\n         * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/setAttribute}\n         */\n        setAttribute(attribute, value) {\n            setAttribute(this.el_, attribute, value);\n        }\n\n        /**\n         * Remove an attribute from the `Component`s element.\n         *\n         * @param {string} attribute\n         *        Name of the attribute to remove.\n         *\n         * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/removeAttribute}\n         */\n        removeAttribute(attribute) {\n            removeAttribute(this.el_, attribute);\n        }\n\n        /**\n         * Get or set the width of the component based upon the CSS styles.\n         * See {@link Component#dimension} for more detailed information.\n         *\n         * @param {number|string} [num]\n         *        The width that you want to set postfixed with '%', 'px' or nothing.\n         *\n         * @param {boolean} [skipListeners]\n         *        Skip the componentresize event trigger\n         *\n         * @return {number|undefined}\n         *         The width when getting, zero if there is no width\n         */\n        width(num, skipListeners) {\n            return this.dimension('width', num, skipListeners);\n        }\n\n        /**\n         * Get or set the height of the component based upon the CSS styles.\n         * See {@link Component#dimension} for more detailed information.\n         *\n         * @param {number|string} [num]\n         *        The height that you want to set postfixed with '%', 'px' or nothing.\n         *\n         * @param {boolean} [skipListeners]\n         *        Skip the componentresize event trigger\n         *\n         * @return {number|undefined}\n         *         The height when getting, zero if there is no height\n         */\n        height(num, skipListeners) {\n            return this.dimension('height', num, skipListeners);\n        }\n\n        /**\n         * Set both the width and height of the `Component` element at the same time.\n         *\n         * @param  {number|string} width\n         *         Width to set the `Component`s element to.\n         *\n         * @param  {number|string} height\n         *         Height to set the `Component`s element to.\n         */\n        dimensions(width, height) {\n            // Skip componentresize listeners on width for optimization\n            this.width(width, true);\n            this.height(height);\n        }\n\n        /**\n         * Get or set width or height of the `Component` element. This is the shared code\n         * for the {@link Component#width} and {@link Component#height}.\n         *\n         * Things to know:\n         * - If the width or height in an number this will return the number postfixed with 'px'.\n         * - If the width/height is a percent this will return the percent postfixed with '%'\n         * - Hidden elements have a width of 0 with `window.getComputedStyle`. This function\n         *   defaults to the `Component`s `style.width` and falls back to `window.getComputedStyle`.\n         *   See [this]{@link http://www.foliotek.com/devblog/getting-the-width-of-a-hidden-element-with-jquery-using-width/}\n         *   for more information\n         * - If you want the computed style of the component, use {@link Component#currentWidth}\n         *   and {@link {Component#currentHeight}\n         *\n         * @fires Component#componentresize\n         *\n         * @param {string} widthOrHeight\n         8        'width' or 'height'\n         *\n         * @param  {number|string} [num]\n         8         New dimension\n         *\n         * @param  {boolean} [skipListeners]\n         *         Skip componentresize event trigger\n         *\n         * @return {number|undefined}\n         *         The dimension when getting or 0 if unset\n         */\n        dimension(widthOrHeight, num, skipListeners) {\n            if (num !== undefined) {\n                // Set to zero if null or literally NaN (NaN !== NaN)\n                if (num === null || num !== num) {\n                    num = 0;\n                }\n\n                // Check if using css width/height (% or px) and adjust\n                if (('' + num).indexOf('%') !== -1 || ('' + num).indexOf('px') !== -1) {\n                    this.el_.style[widthOrHeight] = num;\n                } else if (num === 'auto') {\n                    this.el_.style[widthOrHeight] = '';\n                } else {\n                    this.el_.style[widthOrHeight] = num + 'px';\n                }\n\n                // skipListeners allows us to avoid triggering the resize event when setting both width and height\n                if (!skipListeners) {\n                    /**\n                     * Triggered when a component is resized.\n                     *\n                     * @event Component#componentresize\n                     * @type {Event}\n                     */\n                    this.trigger('componentresize');\n                }\n                return;\n            }\n\n            // Not setting a value, so getting it\n            // Make sure element exists\n            if (!this.el_) {\n                return 0;\n            }\n\n            // Get dimension value from style\n            const val = this.el_.style[widthOrHeight];\n            const pxIndex = val.indexOf('px');\n            if (pxIndex !== -1) {\n                // Return the pixel value with no 'px'\n                return parseInt(val.slice(0, pxIndex), 10);\n            }\n\n            // No px so using % or no style was set, so falling back to offsetWidth/height\n            // If component has display:none, offset will return 0\n            // TODO: handle display:none and no dimension style using px\n            return parseInt(this.el_['offset' + toTitleCase$1(widthOrHeight)], 10);\n        }\n\n        /**\n         * Get the computed width or the height of the component's element.\n         *\n         * Uses `window.getComputedStyle`.\n         *\n         * @param {string} widthOrHeight\n         *        A string containing 'width' or 'height'. Whichever one you want to get.\n         *\n         * @return {number}\n         *         The dimension that gets asked for or 0 if nothing was set\n         *         for that dimension.\n         */\n        currentDimension(widthOrHeight) {\n            let computedWidthOrHeight = 0;\n            if (widthOrHeight !== 'width' && widthOrHeight !== 'height') {\n                throw new Error('currentDimension only accepts width or height value');\n            }\n            computedWidthOrHeight = computedStyle(this.el_, widthOrHeight);\n\n            // remove 'px' from variable and parse as integer\n            computedWidthOrHeight = parseFloat(computedWidthOrHeight);\n\n            // if the computed value is still 0, it's possible that the browser is lying\n            // and we want to check the offset values.\n            // This code also runs wherever getComputedStyle doesn't exist.\n            if (computedWidthOrHeight === 0 || isNaN(computedWidthOrHeight)) {\n                const rule = `offset${toTitleCase$1(widthOrHeight)}`;\n                computedWidthOrHeight = this.el_[rule];\n            }\n            return computedWidthOrHeight;\n        }\n\n        /**\n         * An object that contains width and height values of the `Component`s\n         * computed style. Uses `window.getComputedStyle`.\n         *\n         * @typedef {Object} Component~DimensionObject\n         *\n         * @property {number} width\n         *           The width of the `Component`s computed style.\n         *\n         * @property {number} height\n         *           The height of the `Component`s computed style.\n         */\n\n        /**\n         * Get an object that contains computed width and height values of the\n         * component's element.\n         *\n         * Uses `window.getComputedStyle`.\n         *\n         * @return {Component~DimensionObject}\n         *         The computed dimensions of the component's element.\n         */\n        currentDimensions() {\n            return {\n                width: this.currentDimension('width'),\n                height: this.currentDimension('height')\n            };\n        }\n\n        /**\n         * Get the computed width of the component's element.\n         *\n         * Uses `window.getComputedStyle`.\n         *\n         * @return {number}\n         *         The computed width of the component's element.\n         */\n        currentWidth() {\n            return this.currentDimension('width');\n        }\n\n        /**\n         * Get the computed height of the component's element.\n         *\n         * Uses `window.getComputedStyle`.\n         *\n         * @return {number}\n         *         The computed height of the component's element.\n         */\n        currentHeight() {\n            return this.currentDimension('height');\n        }\n\n        /**\n         * Set the focus to this component\n         */\n        focus() {\n            this.el_.focus();\n        }\n\n        /**\n         * Remove the focus from this component\n         */\n        blur() {\n            this.el_.blur();\n        }\n\n        /**\n         * When this Component receives a `keydown` event which it does not process,\n         *  it passes the event to the Player for handling.\n         *\n         * @param {KeyboardEvent} event\n         *        The `keydown` event that caused this function to be called.\n         */\n        handleKeyDown(event) {\n            if (this.player_) {\n                // We only stop propagation here because we want unhandled events to fall\n                // back to the browser. Exclude Tab for focus trapping.\n                if (!keycode.isEventKey(event, 'Tab')) {\n                    event.stopPropagation();\n                }\n                this.player_.handleKeyDown(event);\n            }\n        }\n\n        /**\n         * Many components used to have a `handleKeyPress` method, which was poorly\n         * named because it listened to a `keydown` event. This method name now\n         * delegates to `handleKeyDown`. This means anyone calling `handleKeyPress`\n         * will not see their method calls stop working.\n         *\n         * @param {KeyboardEvent} event\n         *        The event that caused this function to be called.\n         */\n        handleKeyPress(event) {\n            this.handleKeyDown(event);\n        }\n\n        /**\n         * Emit a 'tap' events when touch event support gets detected. This gets used to\n         * support toggling the controls through a tap on the video. They get enabled\n         * because every sub-component would have extra overhead otherwise.\n         *\n         * @protected\n         * @fires Component#tap\n         * @listens Component#touchstart\n         * @listens Component#touchmove\n         * @listens Component#touchleave\n         * @listens Component#touchcancel\n         * @listens Component#touchend\n         */\n        emitTapEvents() {\n            // Track the start time so we can determine how long the touch lasted\n            let touchStart = 0;\n            let firstTouch = null;\n\n            // Maximum movement allowed during a touch event to still be considered a tap\n            // Other popular libs use anywhere from 2 (hammer.js) to 15,\n            // so 10 seems like a nice, round number.\n            const tapMovementThreshold = 10;\n\n            // The maximum length a touch can be while still being considered a tap\n            const touchTimeThreshold = 200;\n            let couldBeTap;\n            this.on('touchstart', function (event) {\n                // If more than one finger, don't consider treating this as a click\n                if (event.touches.length === 1) {\n                    // Copy pageX/pageY from the object\n                    firstTouch = {\n                        pageX: event.touches[0].pageX,\n                        pageY: event.touches[0].pageY\n                    };\n                    // Record start time so we can detect a tap vs. \"touch and hold\"\n                    touchStart = window.performance.now();\n                    // Reset couldBeTap tracking\n                    couldBeTap = true;\n                }\n            });\n            this.on('touchmove', function (event) {\n                // If more than one finger, don't consider treating this as a click\n                if (event.touches.length > 1) {\n                    couldBeTap = false;\n                } else if (firstTouch) {\n                    // Some devices will throw touchmoves for all but the slightest of taps.\n                    // So, if we moved only a small distance, this could still be a tap\n                    const xdiff = event.touches[0].pageX - firstTouch.pageX;\n                    const ydiff = event.touches[0].pageY - firstTouch.pageY;\n                    const touchDistance = Math.sqrt(xdiff * xdiff + ydiff * ydiff);\n                    if (touchDistance > tapMovementThreshold) {\n                        couldBeTap = false;\n                    }\n                }\n            });\n            const noTap = function () {\n                couldBeTap = false;\n            };\n\n            // TODO: Listen to the original target. http://youtu.be/DujfpXOKUp8?t=13m8s\n            this.on('touchleave', noTap);\n            this.on('touchcancel', noTap);\n\n            // When the touch ends, measure how long it took and trigger the appropriate\n            // event\n            this.on('touchend', function (event) {\n                firstTouch = null;\n                // Proceed only if the touchmove/leave/cancel event didn't happen\n                if (couldBeTap === true) {\n                    // Measure how long the touch lasted\n                    const touchTime = window.performance.now() - touchStart;\n\n                    // Make sure the touch was less than the threshold to be considered a tap\n                    if (touchTime < touchTimeThreshold) {\n                        // Don't let browser turn this into a click\n                        event.preventDefault();\n                        /**\n                         * Triggered when a `Component` is tapped.\n                         *\n                         * @event Component#tap\n                         * @type {MouseEvent}\n                         */\n                        this.trigger('tap');\n                        // It may be good to copy the touchend event object and change the\n                        // type to tap, if the other event properties aren't exact after\n                        // Events.fixEvent runs (e.g. event.target)\n                    }\n                }\n            });\n        }\n\n        /**\n         * This function reports user activity whenever touch events happen. This can get\n         * turned off by any sub-components that wants touch events to act another way.\n         *\n         * Report user touch activity when touch events occur. User activity gets used to\n         * determine when controls should show/hide. It is simple when it comes to mouse\n         * events, because any mouse event should show the controls. So we capture mouse\n         * events that bubble up to the player and report activity when that happens.\n         * With touch events it isn't as easy as `touchstart` and `touchend` toggle player\n         * controls. So touch events can't help us at the player level either.\n         *\n         * User activity gets checked asynchronously. So what could happen is a tap event\n         * on the video turns the controls off. Then the `touchend` event bubbles up to\n         * the player. Which, if it reported user activity, would turn the controls right\n         * back on. We also don't want to completely block touch events from bubbling up.\n         * Furthermore a `touchmove` event and anything other than a tap, should not turn\n         * controls back on.\n         *\n         * @listens Component#touchstart\n         * @listens Component#touchmove\n         * @listens Component#touchend\n         * @listens Component#touchcancel\n         */\n        enableTouchActivity() {\n            // Don't continue if the root player doesn't support reporting user activity\n            if (!this.player() || !this.player().reportUserActivity) {\n                return;\n            }\n\n            // listener for reporting that the user is active\n            const report = bind_(this.player(), this.player().reportUserActivity);\n            let touchHolding;\n            this.on('touchstart', function () {\n                report();\n                // For as long as the they are touching the device or have their mouse down,\n                // we consider them active even if they're not moving their finger or mouse.\n                // So we want to continue to update that they are active\n                this.clearInterval(touchHolding);\n                // report at the same interval as activityCheck\n                touchHolding = this.setInterval(report, 250);\n            });\n            const touchEnd = function (event) {\n                report();\n                // stop the interval that maintains activity if the touch is holding\n                this.clearInterval(touchHolding);\n            };\n            this.on('touchmove', report);\n            this.on('touchend', touchEnd);\n            this.on('touchcancel', touchEnd);\n        }\n\n        /**\n         * A callback that has no parameters and is bound into `Component`s context.\n         *\n         * @callback Component~GenericCallback\n         * @this Component\n         */\n\n        /**\n         * Creates a function that runs after an `x` millisecond timeout. This function is a\n         * wrapper around `window.setTimeout`. There are a few reasons to use this one\n         * instead though:\n         * 1. It gets cleared via  {@link Component#clearTimeout} when\n         *    {@link Component#dispose} gets called.\n         * 2. The function callback will gets turned into a {@link Component~GenericCallback}\n         *\n         * > Note: You can't use `window.clearTimeout` on the id returned by this function. This\n         *         will cause its dispose listener not to get cleaned up! Please use\n         *         {@link Component#clearTimeout} or {@link Component#dispose} instead.\n         *\n         * @param {Component~GenericCallback} fn\n         *        The function that will be run after `timeout`.\n         *\n         * @param {number} timeout\n         *        Timeout in milliseconds to delay before executing the specified function.\n         *\n         * @return {number}\n         *         Returns a timeout ID that gets used to identify the timeout. It can also\n         *         get used in {@link Component#clearTimeout} to clear the timeout that\n         *         was set.\n         *\n         * @listens Component#dispose\n         * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setTimeout}\n         */\n        setTimeout(fn, timeout) {\n            // declare as variables so they are properly available in timeout function\n            // eslint-disable-next-line\n            var timeoutId;\n            fn = bind_(this, fn);\n            this.clearTimersOnDispose_();\n            timeoutId = window.setTimeout(() => {\n                if (this.setTimeoutIds_.has(timeoutId)) {\n                    this.setTimeoutIds_.delete(timeoutId);\n                }\n                fn();\n            }, timeout);\n            this.setTimeoutIds_.add(timeoutId);\n            return timeoutId;\n        }\n\n        /**\n         * Clears a timeout that gets created via `window.setTimeout` or\n         * {@link Component#setTimeout}. If you set a timeout via {@link Component#setTimeout}\n         * use this function instead of `window.clearTimout`. If you don't your dispose\n         * listener will not get cleaned up until {@link Component#dispose}!\n         *\n         * @param {number} timeoutId\n         *        The id of the timeout to clear. The return value of\n         *        {@link Component#setTimeout} or `window.setTimeout`.\n         *\n         * @return {number}\n         *         Returns the timeout id that was cleared.\n         *\n         * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearTimeout}\n         */\n        clearTimeout(timeoutId) {\n            if (this.setTimeoutIds_.has(timeoutId)) {\n                this.setTimeoutIds_.delete(timeoutId);\n                window.clearTimeout(timeoutId);\n            }\n            return timeoutId;\n        }\n\n        /**\n         * Creates a function that gets run every `x` milliseconds. This function is a wrapper\n         * around `window.setInterval`. There are a few reasons to use this one instead though.\n         * 1. It gets cleared via  {@link Component#clearInterval} when\n         *    {@link Component#dispose} gets called.\n         * 2. The function callback will be a {@link Component~GenericCallback}\n         *\n         * @param {Component~GenericCallback} fn\n         *        The function to run every `x` seconds.\n         *\n         * @param {number} interval\n         *        Execute the specified function every `x` milliseconds.\n         *\n         * @return {number}\n         *         Returns an id that can be used to identify the interval. It can also be be used in\n         *         {@link Component#clearInterval} to clear the interval.\n         *\n         * @listens Component#dispose\n         * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setInterval}\n         */\n        setInterval(fn, interval) {\n            fn = bind_(this, fn);\n            this.clearTimersOnDispose_();\n            const intervalId = window.setInterval(fn, interval);\n            this.setIntervalIds_.add(intervalId);\n            return intervalId;\n        }\n\n        /**\n         * Clears an interval that gets created via `window.setInterval` or\n         * {@link Component#setInterval}. If you set an interval via {@link Component#setInterval}\n         * use this function instead of `window.clearInterval`. If you don't your dispose\n         * listener will not get cleaned up until {@link Component#dispose}!\n         *\n         * @param {number} intervalId\n         *        The id of the interval to clear. The return value of\n         *        {@link Component#setInterval} or `window.setInterval`.\n         *\n         * @return {number}\n         *         Returns the interval id that was cleared.\n         *\n         * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearInterval}\n         */\n        clearInterval(intervalId) {\n            if (this.setIntervalIds_.has(intervalId)) {\n                this.setIntervalIds_.delete(intervalId);\n                window.clearInterval(intervalId);\n            }\n            return intervalId;\n        }\n\n        /**\n         * Queues up a callback to be passed to requestAnimationFrame (rAF), but\n         * with a few extra bonuses:\n         *\n         * - Supports browsers that do not support rAF by falling back to\n         *   {@link Component#setTimeout}.\n         *\n         * - The callback is turned into a {@link Component~GenericCallback} (i.e.\n         *   bound to the component).\n         *\n         * - Automatic cancellation of the rAF callback is handled if the component\n         *   is disposed before it is called.\n         *\n         * @param  {Component~GenericCallback} fn\n         *         A function that will be bound to this component and executed just\n         *         before the browser's next repaint.\n         *\n         * @return {number}\n         *         Returns an rAF ID that gets used to identify the timeout. It can\n         *         also be used in {@link Component#cancelAnimationFrame} to cancel\n         *         the animation frame callback.\n         *\n         * @listens Component#dispose\n         * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/requestAnimationFrame}\n         */\n        requestAnimationFrame(fn) {\n            this.clearTimersOnDispose_();\n\n            // declare as variables so they are properly available in rAF function\n            // eslint-disable-next-line\n            var id;\n            fn = bind_(this, fn);\n            id = window.requestAnimationFrame(() => {\n                if (this.rafIds_.has(id)) {\n                    this.rafIds_.delete(id);\n                }\n                fn();\n            });\n            this.rafIds_.add(id);\n            return id;\n        }\n\n        /**\n         * Request an animation frame, but only one named animation\n         * frame will be queued. Another will never be added until\n         * the previous one finishes.\n         *\n         * @param {string} name\n         *        The name to give this requestAnimationFrame\n         *\n         * @param  {Component~GenericCallback} fn\n         *         A function that will be bound to this component and executed just\n         *         before the browser's next repaint.\n         */\n        requestNamedAnimationFrame(name, fn) {\n            if (this.namedRafs_.has(name)) {\n                return;\n            }\n            this.clearTimersOnDispose_();\n            fn = bind_(this, fn);\n            const id = this.requestAnimationFrame(() => {\n                fn();\n                if (this.namedRafs_.has(name)) {\n                    this.namedRafs_.delete(name);\n                }\n            });\n            this.namedRafs_.set(name, id);\n            return name;\n        }\n\n        /**\n         * Cancels a current named animation frame if it exists.\n         *\n         * @param {string} name\n         *        The name of the requestAnimationFrame to cancel.\n         */\n        cancelNamedAnimationFrame(name) {\n            if (!this.namedRafs_.has(name)) {\n                return;\n            }\n            this.cancelAnimationFrame(this.namedRafs_.get(name));\n            this.namedRafs_.delete(name);\n        }\n\n        /**\n         * Cancels a queued callback passed to {@link Component#requestAnimationFrame}\n         * (rAF).\n         *\n         * If you queue an rAF callback via {@link Component#requestAnimationFrame},\n         * use this function instead of `window.cancelAnimationFrame`. If you don't,\n         * your dispose listener will not get cleaned up until {@link Component#dispose}!\n         *\n         * @param {number} id\n         *        The rAF ID to clear. The return value of {@link Component#requestAnimationFrame}.\n         *\n         * @return {number}\n         *         Returns the rAF ID that was cleared.\n         *\n         * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/cancelAnimationFrame}\n         */\n        cancelAnimationFrame(id) {\n            if (this.rafIds_.has(id)) {\n                this.rafIds_.delete(id);\n                window.cancelAnimationFrame(id);\n            }\n            return id;\n        }\n\n        /**\n         * A function to setup `requestAnimationFrame`, `setTimeout`,\n         * and `setInterval`, clearing on dispose.\n         *\n         * > Previously each timer added and removed dispose listeners on it's own.\n         * For better performance it was decided to batch them all, and use `Set`s\n         * to track outstanding timer ids.\n         *\n         * @private\n         */\n        clearTimersOnDispose_() {\n            if (this.clearingTimersOnDispose_) {\n                return;\n            }\n            this.clearingTimersOnDispose_ = true;\n            this.one('dispose', () => {\n                [['namedRafs_', 'cancelNamedAnimationFrame'], ['rafIds_', 'cancelAnimationFrame'], ['setTimeoutIds_', 'clearTimeout'], ['setIntervalIds_', 'clearInterval']].forEach(([idName, cancelName]) => {\n                    // for a `Set` key will actually be the value again\n                    // so forEach((val, val) =>` but for maps we want to use\n                    // the key.\n                    this[idName].forEach((val, key) => this[cancelName](key));\n                });\n                this.clearingTimersOnDispose_ = false;\n            });\n        }\n\n        /**\n         * Register a `Component` with `videojs` given the name and the component.\n         *\n         * > NOTE: {@link Tech}s should not be registered as a `Component`. {@link Tech}s\n         *         should be registered using {@link Tech.registerTech} or\n         *         {@link videojs:videojs.registerTech}.\n         *\n         * > NOTE: This function can also be seen on videojs as\n         *         {@link videojs:videojs.registerComponent}.\n         *\n         * @param {string} name\n         *        The name of the `Component` to register.\n         *\n         * @param {Component} ComponentToRegister\n         *        The `Component` class to register.\n         *\n         * @return {Component}\n         *         The `Component` that was registered.\n         */\n        static registerComponent(name, ComponentToRegister) {\n            if (typeof name !== 'string' || !name) {\n                throw new Error(`Illegal component name, \"${name}\"; must be a non-empty string.`);\n            }\n            const Tech = Component$1.getComponent('Tech');\n\n            // We need to make sure this check is only done if Tech has been registered.\n            const isTech = Tech && Tech.isTech(ComponentToRegister);\n            const isComp = Component$1 === ComponentToRegister || Component$1.prototype.isPrototypeOf(ComponentToRegister.prototype);\n            if (isTech || !isComp) {\n                let reason;\n                if (isTech) {\n                    reason = 'techs must be registered using Tech.registerTech()';\n                } else {\n                    reason = 'must be a Component subclass';\n                }\n                throw new Error(`Illegal component, \"${name}\"; ${reason}.`);\n            }\n            name = toTitleCase$1(name);\n            if (!Component$1.components_) {\n                Component$1.components_ = {};\n            }\n            const Player = Component$1.getComponent('Player');\n            if (name === 'Player' && Player && Player.players) {\n                const players = Player.players;\n                const playerNames = Object.keys(players);\n\n                // If we have players that were disposed, then their name will still be\n                // in Players.players. So, we must loop through and verify that the value\n                // for each item is not null. This allows registration of the Player component\n                // after all players have been disposed or before any were created.\n                if (players && playerNames.length > 0 && playerNames.map(pname => players[pname]).every(Boolean)) {\n                    throw new Error('Can not register Player component after player has been created.');\n                }\n            }\n            Component$1.components_[name] = ComponentToRegister;\n            Component$1.components_[toLowerCase(name)] = ComponentToRegister;\n            return ComponentToRegister;\n        }\n\n        /**\n         * Get a `Component` based on the name it was registered with.\n         *\n         * @param {string} name\n         *        The Name of the component to get.\n         *\n         * @return {typeof Component}\n         *         The `Component` that got registered under the given name.\n         */\n        static getComponent(name) {\n            if (!name || !Component$1.components_) {\n                return;\n            }\n            return Component$1.components_[name];\n        }\n    }\n    Component$1.registerComponent('Component', Component$1);\n\n    /**\n     * @file time.js\n     * @module time\n     */\n\n    /**\n     * Returns the time for the specified index at the start or end\n     * of a TimeRange object.\n     *\n     * @typedef    {Function} TimeRangeIndex\n     *\n     * @param      {number} [index=0]\n     *             The range number to return the time for.\n     *\n     * @return     {number}\n     *             The time offset at the specified index.\n     *\n     * @deprecated The index argument must be provided.\n     *             In the future, leaving it out will throw an error.\n     */\n\n    /**\n     * An object that contains ranges of time, which mimics {@link TimeRanges}.\n     *\n     * @typedef  {Object} TimeRange\n     *\n     * @property {number} length\n     *           The number of time ranges represented by this object.\n     *\n     * @property {module:time~TimeRangeIndex} start\n     *           Returns the time offset at which a specified time range begins.\n     *\n     * @property {module:time~TimeRangeIndex} end\n     *           Returns the time offset at which a specified time range ends.\n     *\n     * @see https://developer.mozilla.org/en-US/docs/Web/API/TimeRanges\n     */\n\n    /**\n     * Check if any of the time ranges are over the maximum index.\n     *\n     * @private\n     * @param   {string} fnName\n     *          The function name to use for logging\n     *\n     * @param   {number} index\n     *          The index to check\n     *\n     * @param   {number} maxIndex\n     *          The maximum possible index\n     *\n     * @throws  {Error} if the timeRanges provided are over the maxIndex\n     */\n    function rangeCheck(fnName, index, maxIndex) {\n        if (typeof index !== 'number' || index < 0 || index > maxIndex) {\n            throw new Error(`Failed to execute '${fnName}' on 'TimeRanges': The index provided (${index}) is non-numeric or out of bounds (0-${maxIndex}).`);\n        }\n    }\n\n    /**\n     * Get the time for the specified index at the start or end\n     * of a TimeRange object.\n     *\n     * @private\n     * @param      {string} fnName\n     *             The function name to use for logging\n     *\n     * @param      {string} valueIndex\n     *             The property that should be used to get the time. should be\n     *             'start' or 'end'\n     *\n     * @param      {Array} ranges\n     *             An array of time ranges\n     *\n     * @param      {Array} [rangeIndex=0]\n     *             The index to start the search at\n     *\n     * @return     {number}\n     *             The time that offset at the specified index.\n     *\n     * @deprecated rangeIndex must be set to a value, in the future this will throw an error.\n     * @throws     {Error} if rangeIndex is more than the length of ranges\n     */\n    function getRange(fnName, valueIndex, ranges, rangeIndex) {\n        rangeCheck(fnName, rangeIndex, ranges.length - 1);\n        return ranges[rangeIndex][valueIndex];\n    }\n\n    /**\n     * Create a time range object given ranges of time.\n     *\n     * @private\n     * @param   {Array} [ranges]\n     *          An array of time ranges.\n     *\n     * @return  {TimeRange}\n     */\n    function createTimeRangesObj(ranges) {\n        let timeRangesObj;\n        if (ranges === undefined || ranges.length === 0) {\n            timeRangesObj = {\n                length: 0,\n                start() {\n                    throw new Error('This TimeRanges object is empty');\n                },\n                end() {\n                    throw new Error('This TimeRanges object is empty');\n                }\n            };\n        } else {\n            timeRangesObj = {\n                length: ranges.length,\n                start: getRange.bind(null, 'start', 0, ranges),\n                end: getRange.bind(null, 'end', 1, ranges)\n            };\n        }\n        if (window.Symbol && window.Symbol.iterator) {\n            timeRangesObj[window.Symbol.iterator] = () => (ranges || []).values();\n        }\n        return timeRangesObj;\n    }\n\n    /**\n     * Create a `TimeRange` object which mimics an\n     * {@link https://developer.mozilla.org/en-US/docs/Web/API/TimeRanges|HTML5 TimeRanges instance}.\n     *\n     * @param {number|Array[]} start\n     *        The start of a single range (a number) or an array of ranges (an\n     *        array of arrays of two numbers each).\n     *\n     * @param {number} end\n     *        The end of a single range. Cannot be used with the array form of\n     *        the `start` argument.\n     *\n     * @return {TimeRange}\n     */\n    function createTimeRanges$1(start, end) {\n        if (Array.isArray(start)) {\n            return createTimeRangesObj(start);\n        } else if (start === undefined || end === undefined) {\n            return createTimeRangesObj();\n        }\n        return createTimeRangesObj([[start, end]]);\n    }\n\n    /**\n     * Format seconds as a time string, H:MM:SS or M:SS. Supplying a guide (in\n     * seconds) will force a number of leading zeros to cover the length of the\n     * guide.\n     *\n     * @private\n     * @param  {number} seconds\n     *         Number of seconds to be turned into a string\n     *\n     * @param  {number} guide\n     *         Number (in seconds) to model the string after\n     *\n     * @return {string}\n     *         Time formatted as H:MM:SS or M:SS\n     */\n    const defaultImplementation = function (seconds, guide) {\n        seconds = seconds < 0 ? 0 : seconds;\n        let s = Math.floor(seconds % 60);\n        let m = Math.floor(seconds / 60 % 60);\n        let h = Math.floor(seconds / 3600);\n        const gm = Math.floor(guide / 60 % 60);\n        const gh = Math.floor(guide / 3600);\n\n        // handle invalid times\n        if (isNaN(seconds) || seconds === Infinity) {\n            // '-' is false for all relational operators (e.g. <, >=) so this setting\n            // will add the minimum number of fields specified by the guide\n            h = m = s = '-';\n        }\n\n        // Check if we need to show hours\n        h = h > 0 || gh > 0 ? h + ':' : '';\n\n        // If hours are showing, we may need to add a leading zero.\n        // Always show at least one digit of minutes.\n        m = ((h || gm >= 10) && m < 10 ? '0' + m : m) + ':';\n\n        // Check if leading zero is need for seconds\n        s = s < 10 ? '0' + s : s;\n        return h + m + s;\n    };\n\n    // Internal pointer to the current implementation.\n    let implementation = defaultImplementation;\n\n    /**\n     * Replaces the default formatTime implementation with a custom implementation.\n     *\n     * @param {Function} customImplementation\n     *        A function which will be used in place of the default formatTime\n     *        implementation. Will receive the current time in seconds and the\n     *        guide (in seconds) as arguments.\n     */\n    function setFormatTime(customImplementation) {\n        implementation = customImplementation;\n    }\n\n    /**\n     * Resets formatTime to the default implementation.\n     */\n    function resetFormatTime() {\n        implementation = defaultImplementation;\n    }\n\n    /**\n     * Delegates to either the default time formatting function or a custom\n     * function supplied via `setFormatTime`.\n     *\n     * Formats seconds as a time string (H:MM:SS or M:SS). Supplying a\n     * guide (in seconds) will force a number of leading zeros to cover the\n     * length of the guide.\n     *\n     * @example  formatTime(125, 600) === \"02:05\"\n     * @param    {number} seconds\n     *           Number of seconds to be turned into a string\n     *\n     * @param    {number} guide\n     *           Number (in seconds) to model the string after\n     *\n     * @return   {string}\n     *           Time formatted as H:MM:SS or M:SS\n     */\n    function formatTime(seconds, guide = seconds) {\n        return implementation(seconds, guide);\n    }\n\n    var Time = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        createTimeRanges: createTimeRanges$1,\n        createTimeRange: createTimeRanges$1,\n        setFormatTime: setFormatTime,\n        resetFormatTime: resetFormatTime,\n        formatTime: formatTime\n    });\n\n    /**\n     * @file buffer.js\n     * @module buffer\n     */\n\n    /**\n     * Compute the percentage of the media that has been buffered.\n     *\n     * @param { import('./time').TimeRange } buffered\n     *        The current `TimeRanges` object representing buffered time ranges\n     *\n     * @param {number} duration\n     *        Total duration of the media\n     *\n     * @return {number}\n     *         Percent buffered of the total duration in decimal form.\n     */\n    function bufferedPercent(buffered, duration) {\n        let bufferedDuration = 0;\n        let start;\n        let end;\n        if (!duration) {\n            return 0;\n        }\n        if (!buffered || !buffered.length) {\n            buffered = createTimeRanges$1(0, 0);\n        }\n        for (let i = 0; i < buffered.length; i++) {\n            start = buffered.start(i);\n            end = buffered.end(i);\n\n            // buffered end can be bigger than duration by a very small fraction\n            if (end > duration) {\n                end = duration;\n            }\n            bufferedDuration += end - start;\n        }\n        return bufferedDuration / duration;\n    }\n\n    /**\n     * @file media-error.js\n     */\n\n    /**\n     * A Custom `MediaError` class which mimics the standard HTML5 `MediaError` class.\n     *\n     * @param {number|string|Object|MediaError} value\n     *        This can be of multiple types:\n     *        - number: should be a standard error code\n     *        - string: an error message (the code will be 0)\n     *        - Object: arbitrary properties\n     *        - `MediaError` (native): used to populate a video.js `MediaError` object\n     *        - `MediaError` (video.js): will return itself if it's already a\n     *          video.js `MediaError` object.\n     *\n     * @see [MediaError Spec]{@link https://dev.w3.org/html5/spec-author-view/video.html#mediaerror}\n     * @see [Encrypted MediaError Spec]{@link https://www.w3.org/TR/2013/WD-encrypted-media-20130510/#error-codes}\n     *\n     * @class MediaError\n     */\n    function MediaError(value) {\n        // Allow redundant calls to this constructor to avoid having `instanceof`\n        // checks peppered around the code.\n        if (value instanceof MediaError) {\n            return value;\n        }\n        if (typeof value === 'number') {\n            this.code = value;\n        } else if (typeof value === 'string') {\n            // default code is zero, so this is a custom error\n            this.message = value;\n        } else if (isObject$1(value)) {\n            // We assign the `code` property manually because native `MediaError` objects\n            // do not expose it as an own/enumerable property of the object.\n            if (typeof value.code === 'number') {\n                this.code = value.code;\n            }\n            Object.assign(this, value);\n        }\n        if (!this.message) {\n            this.message = MediaError.defaultMessages[this.code] || '';\n        }\n    }\n\n    /**\n     * The error code that refers two one of the defined `MediaError` types\n     *\n     * @type {Number}\n     */\n    MediaError.prototype.code = 0;\n\n    /**\n     * An optional message that to show with the error. Message is not part of the HTML5\n     * video spec but allows for more informative custom errors.\n     *\n     * @type {String}\n     */\n    MediaError.prototype.message = '';\n\n    /**\n     * An optional status code that can be set by plugins to allow even more detail about\n     * the error. For example a plugin might provide a specific HTTP status code and an\n     * error message for that code. Then when the plugin gets that error this class will\n     * know how to display an error message for it. This allows a custom message to show\n     * up on the `Player` error overlay.\n     *\n     * @type {Array}\n     */\n    MediaError.prototype.status = null;\n\n    /**\n     * Errors indexed by the W3C standard. The order **CANNOT CHANGE**! See the\n     * specification listed under {@link MediaError} for more information.\n     *\n     * @enum {array}\n     * @readonly\n     * @property {string} 0 - MEDIA_ERR_CUSTOM\n     * @property {string} 1 - MEDIA_ERR_ABORTED\n     * @property {string} 2 - MEDIA_ERR_NETWORK\n     * @property {string} 3 - MEDIA_ERR_DECODE\n     * @property {string} 4 - MEDIA_ERR_SRC_NOT_SUPPORTED\n     * @property {string} 5 - MEDIA_ERR_ENCRYPTED\n     */\n    MediaError.errorTypes = ['MEDIA_ERR_CUSTOM', 'MEDIA_ERR_ABORTED', 'MEDIA_ERR_NETWORK', 'MEDIA_ERR_DECODE', 'MEDIA_ERR_SRC_NOT_SUPPORTED', 'MEDIA_ERR_ENCRYPTED'];\n\n    /**\n     * The default `MediaError` messages based on the {@link MediaError.errorTypes}.\n     *\n     * @type {Array}\n     * @constant\n     */\n    MediaError.defaultMessages = {\n        1: 'You aborted the media playback',\n        2: 'A network error caused the media download to fail part-way.',\n        3: 'The media playback was aborted due to a corruption problem or because the media used features your browser did not support.',\n        4: 'The media could not be loaded, either because the server or network failed or because the format is not supported.',\n        5: 'The media is encrypted and we do not have the keys to decrypt it.'\n    };\n\n    // Add types as properties on MediaError\n    // e.g. MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED = 4;\n    for (let errNum = 0; errNum < MediaError.errorTypes.length; errNum++) {\n        MediaError[MediaError.errorTypes[errNum]] = errNum;\n        // values should be accessible on both the class and instance\n        MediaError.prototype[MediaError.errorTypes[errNum]] = errNum;\n    }\n\n    var tuple = SafeParseTuple;\n    function SafeParseTuple(obj, reviver) {\n        var json;\n        var error = null;\n        try {\n            json = JSON.parse(obj, reviver);\n        } catch (err) {\n            error = err;\n        }\n        return [error, json];\n    }\n\n    /**\n     * Returns whether an object is `Promise`-like (i.e. has a `then` method).\n     *\n     * @param  {Object}  value\n     *         An object that may or may not be `Promise`-like.\n     *\n     * @return {boolean}\n     *         Whether or not the object is `Promise`-like.\n     */\n    function isPromise(value) {\n        return value !== undefined && value !== null && typeof value.then === 'function';\n    }\n\n    /**\n     * Silence a Promise-like object.\n     *\n     * This is useful for avoiding non-harmful, but potentially confusing \"uncaught\n     * play promise\" rejection error messages.\n     *\n     * @param  {Object} value\n     *         An object that may or may not be `Promise`-like.\n     */\n    function silencePromise(value) {\n        if (isPromise(value)) {\n            value.then(null, e => {});\n        }\n    }\n\n    /**\n     * @file text-track-list-converter.js Utilities for capturing text track state and\n     * re-creating tracks based on a capture.\n     *\n     * @module text-track-list-converter\n     */\n\n    /**\n     * Examine a single {@link TextTrack} and return a JSON-compatible javascript object that\n     * represents the {@link TextTrack}'s state.\n     *\n     * @param {TextTrack} track\n     *        The text track to query.\n     *\n     * @return {Object}\n     *         A serializable javascript representation of the TextTrack.\n     * @private\n     */\n    const trackToJson_ = function (track) {\n        const ret = ['kind', 'label', 'language', 'id', 'inBandMetadataTrackDispatchType', 'mode', 'src'].reduce((acc, prop, i) => {\n            if (track[prop]) {\n                acc[prop] = track[prop];\n            }\n            return acc;\n        }, {\n            cues: track.cues && Array.prototype.map.call(track.cues, function (cue) {\n                return {\n                    startTime: cue.startTime,\n                    endTime: cue.endTime,\n                    text: cue.text,\n                    id: cue.id\n                };\n            })\n        });\n        return ret;\n    };\n\n    /**\n     * Examine a {@link Tech} and return a JSON-compatible javascript array that represents the\n     * state of all {@link TextTrack}s currently configured. The return array is compatible with\n     * {@link text-track-list-converter:jsonToTextTracks}.\n     *\n     * @param { import('../tech/tech').default } tech\n     *        The tech object to query\n     *\n     * @return {Array}\n     *         A serializable javascript representation of the {@link Tech}s\n     *         {@link TextTrackList}.\n     */\n    const textTracksToJson = function (tech) {\n        const trackEls = tech.$$('track');\n        const trackObjs = Array.prototype.map.call(trackEls, t => t.track);\n        const tracks = Array.prototype.map.call(trackEls, function (trackEl) {\n            const json = trackToJson_(trackEl.track);\n            if (trackEl.src) {\n                json.src = trackEl.src;\n            }\n            return json;\n        });\n        return tracks.concat(Array.prototype.filter.call(tech.textTracks(), function (track) {\n            return trackObjs.indexOf(track) === -1;\n        }).map(trackToJson_));\n    };\n\n    /**\n     * Create a set of remote {@link TextTrack}s on a {@link Tech} based on an array of javascript\n     * object {@link TextTrack} representations.\n     *\n     * @param {Array} json\n     *        An array of `TextTrack` representation objects, like those that would be\n     *        produced by `textTracksToJson`.\n     *\n     * @param {Tech} tech\n     *        The `Tech` to create the `TextTrack`s on.\n     */\n    const jsonToTextTracks = function (json, tech) {\n        json.forEach(function (track) {\n            const addedTrack = tech.addRemoteTextTrack(track).track;\n            if (!track.src && track.cues) {\n                track.cues.forEach(cue => addedTrack.addCue(cue));\n            }\n        });\n        return tech.textTracks();\n    };\n    var textTrackConverter = {\n        textTracksToJson,\n        jsonToTextTracks,\n        trackToJson_\n    };\n\n    /**\n     * @file modal-dialog.js\n     */\n    const MODAL_CLASS_NAME = 'vjs-modal-dialog';\n\n    /**\n     * The `ModalDialog` displays over the video and its controls, which blocks\n     * interaction with the player until it is closed.\n     *\n     * Modal dialogs include a \"Close\" button and will close when that button\n     * is activated - or when ESC is pressed anywhere.\n     *\n     * @extends Component\n     */\n    class ModalDialog extends Component$1 {\n        /**\n         * Create an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param { import('./utils/dom').ContentDescriptor} [options.content=undefined]\n         *        Provide customized content for this modal.\n         *\n         * @param {string} [options.description]\n         *        A text description for the modal, primarily for accessibility.\n         *\n         * @param {boolean} [options.fillAlways=false]\n         *        Normally, modals are automatically filled only the first time\n         *        they open. This tells the modal to refresh its content\n         *        every time it opens.\n         *\n         * @param {string} [options.label]\n         *        A text label for the modal, primarily for accessibility.\n         *\n         * @param {boolean} [options.pauseOnOpen=true]\n         *        If `true`, playback will will be paused if playing when\n         *        the modal opens, and resumed when it closes.\n         *\n         * @param {boolean} [options.temporary=true]\n         *        If `true`, the modal can only be opened once; it will be\n         *        disposed as soon as it's closed.\n         *\n         * @param {boolean} [options.uncloseable=false]\n         *        If `true`, the user will not be able to close the modal\n         *        through the UI in the normal ways. Programmatic closing is\n         *        still possible.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.handleKeyDown_ = e => this.handleKeyDown(e);\n            this.close_ = e => this.close(e);\n            this.opened_ = this.hasBeenOpened_ = this.hasBeenFilled_ = false;\n            this.closeable(!this.options_.uncloseable);\n            this.content(this.options_.content);\n\n            // Make sure the contentEl is defined AFTER any children are initialized\n            // because we only want the contents of the modal in the contentEl\n            // (not the UI elements like the close button).\n            this.contentEl_ = createEl('div', {\n                className: `${MODAL_CLASS_NAME}-content`\n            }, {\n                role: 'document'\n            });\n            this.descEl_ = createEl('p', {\n                className: `${MODAL_CLASS_NAME}-description vjs-control-text`,\n                id: this.el().getAttribute('aria-describedby')\n            });\n            textContent(this.descEl_, this.description());\n            this.el_.appendChild(this.descEl_);\n            this.el_.appendChild(this.contentEl_);\n        }\n\n        /**\n         * Create the `ModalDialog`'s DOM element\n         *\n         * @return {Element}\n         *         The DOM element that gets created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: this.buildCSSClass(),\n                tabIndex: -1\n            }, {\n                'aria-describedby': `${this.id()}_description`,\n                'aria-hidden': 'true',\n                'aria-label': this.label(),\n                'role': 'dialog'\n            });\n        }\n        dispose() {\n            this.contentEl_ = null;\n            this.descEl_ = null;\n            this.previouslyActiveEl_ = null;\n            super.dispose();\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `${MODAL_CLASS_NAME} vjs-hidden ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * Returns the label string for this modal. Primarily used for accessibility.\n         *\n         * @return {string}\n         *         the localized or raw label of this modal.\n         */\n        label() {\n            return this.localize(this.options_.label || 'Modal Window');\n        }\n\n        /**\n         * Returns the description string for this modal. Primarily used for\n         * accessibility.\n         *\n         * @return {string}\n         *         The localized or raw description of this modal.\n         */\n        description() {\n            let desc = this.options_.description || this.localize('This is a modal window.');\n\n            // Append a universal closeability message if the modal is closeable.\n            if (this.closeable()) {\n                desc += ' ' + this.localize('This modal can be closed by pressing the Escape key or activating the close button.');\n            }\n            return desc;\n        }\n\n        /**\n         * Opens the modal.\n         *\n         * @fires ModalDialog#beforemodalopen\n         * @fires ModalDialog#modalopen\n         */\n        open() {\n            if (!this.opened_) {\n                const player = this.player();\n\n                /**\n                 * Fired just before a `ModalDialog` is opened.\n                 *\n                 * @event ModalDialog#beforemodalopen\n                 * @type {Event}\n                 */\n                this.trigger('beforemodalopen');\n                this.opened_ = true;\n\n                // Fill content if the modal has never opened before and\n                // never been filled.\n                if (this.options_.fillAlways || !this.hasBeenOpened_ && !this.hasBeenFilled_) {\n                    this.fill();\n                }\n\n                // If the player was playing, pause it and take note of its previously\n                // playing state.\n                this.wasPlaying_ = !player.paused();\n                if (this.options_.pauseOnOpen && this.wasPlaying_) {\n                    player.pause();\n                }\n                this.on('keydown', this.handleKeyDown_);\n\n                // Hide controls and note if they were enabled.\n                this.hadControls_ = player.controls();\n                player.controls(false);\n                this.show();\n                this.conditionalFocus_();\n                this.el().setAttribute('aria-hidden', 'false');\n\n                /**\n                 * Fired just after a `ModalDialog` is opened.\n                 *\n                 * @event ModalDialog#modalopen\n                 * @type {Event}\n                 */\n                this.trigger('modalopen');\n                this.hasBeenOpened_ = true;\n            }\n        }\n\n        /**\n         * If the `ModalDialog` is currently open or closed.\n         *\n         * @param  {boolean} [value]\n         *         If given, it will open (`true`) or close (`false`) the modal.\n         *\n         * @return {boolean}\n         *         the current open state of the modaldialog\n         */\n        opened(value) {\n            if (typeof value === 'boolean') {\n                this[value ? 'open' : 'close']();\n            }\n            return this.opened_;\n        }\n\n        /**\n         * Closes the modal, does nothing if the `ModalDialog` is\n         * not open.\n         *\n         * @fires ModalDialog#beforemodalclose\n         * @fires ModalDialog#modalclose\n         */\n        close() {\n            if (!this.opened_) {\n                return;\n            }\n            const player = this.player();\n\n            /**\n             * Fired just before a `ModalDialog` is closed.\n             *\n             * @event ModalDialog#beforemodalclose\n             * @type {Event}\n             */\n            this.trigger('beforemodalclose');\n            this.opened_ = false;\n            if (this.wasPlaying_ && this.options_.pauseOnOpen) {\n                player.play();\n            }\n            this.off('keydown', this.handleKeyDown_);\n            if (this.hadControls_) {\n                player.controls(true);\n            }\n            this.hide();\n            this.el().setAttribute('aria-hidden', 'true');\n\n            /**\n             * Fired just after a `ModalDialog` is closed.\n             *\n             * @event ModalDialog#modalclose\n             * @type {Event}\n             */\n            this.trigger('modalclose');\n            this.conditionalBlur_();\n            if (this.options_.temporary) {\n                this.dispose();\n            }\n        }\n\n        /**\n         * Check to see if the `ModalDialog` is closeable via the UI.\n         *\n         * @param  {boolean} [value]\n         *         If given as a boolean, it will set the `closeable` option.\n         *\n         * @return {boolean}\n         *         Returns the final value of the closable option.\n         */\n        closeable(value) {\n            if (typeof value === 'boolean') {\n                const closeable = this.closeable_ = !!value;\n                let close = this.getChild('closeButton');\n\n                // If this is being made closeable and has no close button, add one.\n                if (closeable && !close) {\n                    // The close button should be a child of the modal - not its\n                    // content element, so temporarily change the content element.\n                    const temp = this.contentEl_;\n                    this.contentEl_ = this.el_;\n                    close = this.addChild('closeButton', {\n                        controlText: 'Close Modal Dialog'\n                    });\n                    this.contentEl_ = temp;\n                    this.on(close, 'close', this.close_);\n                }\n\n                // If this is being made uncloseable and has a close button, remove it.\n                if (!closeable && close) {\n                    this.off(close, 'close', this.close_);\n                    this.removeChild(close);\n                    close.dispose();\n                }\n            }\n            return this.closeable_;\n        }\n\n        /**\n         * Fill the modal's content element with the modal's \"content\" option.\n         * The content element will be emptied before this change takes place.\n         */\n        fill() {\n            this.fillWith(this.content());\n        }\n\n        /**\n         * Fill the modal's content element with arbitrary content.\n         * The content element will be emptied before this change takes place.\n         *\n         * @fires ModalDialog#beforemodalfill\n         * @fires ModalDialog#modalfill\n         *\n         * @param { import('./utils/dom').ContentDescriptor} [content]\n         *        The same rules apply to this as apply to the `content` option.\n         */\n        fillWith(content) {\n            const contentEl = this.contentEl();\n            const parentEl = contentEl.parentNode;\n            const nextSiblingEl = contentEl.nextSibling;\n\n            /**\n             * Fired just before a `ModalDialog` is filled with content.\n             *\n             * @event ModalDialog#beforemodalfill\n             * @type {Event}\n             */\n            this.trigger('beforemodalfill');\n            this.hasBeenFilled_ = true;\n\n            // Detach the content element from the DOM before performing\n            // manipulation to avoid modifying the live DOM multiple times.\n            parentEl.removeChild(contentEl);\n            this.empty();\n            insertContent(contentEl, content);\n            /**\n             * Fired just after a `ModalDialog` is filled with content.\n             *\n             * @event ModalDialog#modalfill\n             * @type {Event}\n             */\n            this.trigger('modalfill');\n\n            // Re-inject the re-filled content element.\n            if (nextSiblingEl) {\n                parentEl.insertBefore(contentEl, nextSiblingEl);\n            } else {\n                parentEl.appendChild(contentEl);\n            }\n\n            // make sure that the close button is last in the dialog DOM\n            const closeButton = this.getChild('closeButton');\n            if (closeButton) {\n                parentEl.appendChild(closeButton.el_);\n            }\n        }\n\n        /**\n         * Empties the content element. This happens anytime the modal is filled.\n         *\n         * @fires ModalDialog#beforemodalempty\n         * @fires ModalDialog#modalempty\n         */\n        empty() {\n            /**\n             * Fired just before a `ModalDialog` is emptied.\n             *\n             * @event ModalDialog#beforemodalempty\n             * @type {Event}\n             */\n            this.trigger('beforemodalempty');\n            emptyEl(this.contentEl());\n\n            /**\n             * Fired just after a `ModalDialog` is emptied.\n             *\n             * @event ModalDialog#modalempty\n             * @type {Event}\n             */\n            this.trigger('modalempty');\n        }\n\n        /**\n         * Gets or sets the modal content, which gets normalized before being\n         * rendered into the DOM.\n         *\n         * This does not update the DOM or fill the modal, but it is called during\n         * that process.\n         *\n         * @param  { import('./utils/dom').ContentDescriptor} [value]\n         *         If defined, sets the internal content value to be used on the\n         *         next call(s) to `fill`. This value is normalized before being\n         *         inserted. To \"clear\" the internal content value, pass `null`.\n         *\n         * @return { import('./utils/dom').ContentDescriptor}\n         *         The current content of the modal dialog\n         */\n        content(value) {\n            if (typeof value !== 'undefined') {\n                this.content_ = value;\n            }\n            return this.content_;\n        }\n\n        /**\n         * conditionally focus the modal dialog if focus was previously on the player.\n         *\n         * @private\n         */\n        conditionalFocus_() {\n            const activeEl = document.activeElement;\n            const playerEl = this.player_.el_;\n            this.previouslyActiveEl_ = null;\n            if (playerEl.contains(activeEl) || playerEl === activeEl) {\n                this.previouslyActiveEl_ = activeEl;\n                this.focus();\n            }\n        }\n\n        /**\n         * conditionally blur the element and refocus the last focused element\n         *\n         * @private\n         */\n        conditionalBlur_() {\n            if (this.previouslyActiveEl_) {\n                this.previouslyActiveEl_.focus();\n                this.previouslyActiveEl_ = null;\n            }\n        }\n\n        /**\n         * Keydown handler. Attached when modal is focused.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            // Do not allow keydowns to reach out of the modal dialog.\n            event.stopPropagation();\n            if (keycode.isEventKey(event, 'Escape') && this.closeable()) {\n                event.preventDefault();\n                this.close();\n                return;\n            }\n\n            // exit early if it isn't a tab key\n            if (!keycode.isEventKey(event, 'Tab')) {\n                return;\n            }\n            const focusableEls = this.focusableEls_();\n            const activeEl = this.el_.querySelector(':focus');\n            let focusIndex;\n            for (let i = 0; i < focusableEls.length; i++) {\n                if (activeEl === focusableEls[i]) {\n                    focusIndex = i;\n                    break;\n                }\n            }\n            if (document.activeElement === this.el_) {\n                focusIndex = 0;\n            }\n            if (event.shiftKey && focusIndex === 0) {\n                focusableEls[focusableEls.length - 1].focus();\n                event.preventDefault();\n            } else if (!event.shiftKey && focusIndex === focusableEls.length - 1) {\n                focusableEls[0].focus();\n                event.preventDefault();\n            }\n        }\n\n        /**\n         * get all focusable elements\n         *\n         * @private\n         */\n        focusableEls_() {\n            const allChildren = this.el_.querySelectorAll('*');\n            return Array.prototype.filter.call(allChildren, child => {\n                return (child instanceof window.HTMLAnchorElement || child instanceof window.HTMLAreaElement) && child.hasAttribute('href') || (child instanceof window.HTMLInputElement || child instanceof window.HTMLSelectElement || child instanceof window.HTMLTextAreaElement || child instanceof window.HTMLButtonElement) && !child.hasAttribute('disabled') || child instanceof window.HTMLIFrameElement || child instanceof window.HTMLObjectElement || child instanceof window.HTMLEmbedElement || child.hasAttribute('tabindex') && child.getAttribute('tabindex') !== -1 || child.hasAttribute('contenteditable');\n            });\n        }\n    }\n\n    /**\n     * Default options for `ModalDialog` default options.\n     *\n     * @type {Object}\n     * @private\n     */\n    ModalDialog.prototype.options_ = {\n        pauseOnOpen: true,\n        temporary: true\n    };\n    Component$1.registerComponent('ModalDialog', ModalDialog);\n\n    /**\n     * @file track-list.js\n     */\n\n    /**\n     * Common functionaliy between {@link TextTrackList}, {@link AudioTrackList}, and\n     * {@link VideoTrackList}\n     *\n     * @extends EventTarget\n     */\n    class TrackList extends EventTarget$2 {\n        /**\n         * Create an instance of this class\n         *\n         * @param { import('./track').default[] } tracks\n         *        A list of tracks to initialize the list with.\n         *\n         * @abstract\n         */\n        constructor(tracks = []) {\n            super();\n            this.tracks_ = [];\n\n            /**\n             * @memberof TrackList\n             * @member {number} length\n             *         The current number of `Track`s in the this Trackist.\n             * @instance\n             */\n            Object.defineProperty(this, 'length', {\n                get() {\n                    return this.tracks_.length;\n                }\n            });\n            for (let i = 0; i < tracks.length; i++) {\n                this.addTrack(tracks[i]);\n            }\n        }\n\n        /**\n         * Add a {@link Track} to the `TrackList`\n         *\n         * @param { import('./track').default } track\n         *        The audio, video, or text track to add to the list.\n         *\n         * @fires TrackList#addtrack\n         */\n        addTrack(track) {\n            const index = this.tracks_.length;\n            if (!('' + index in this)) {\n                Object.defineProperty(this, index, {\n                    get() {\n                        return this.tracks_[index];\n                    }\n                });\n            }\n\n            // Do not add duplicate tracks\n            if (this.tracks_.indexOf(track) === -1) {\n                this.tracks_.push(track);\n                /**\n                 * Triggered when a track is added to a track list.\n                 *\n                 * @event TrackList#addtrack\n                 * @type {Event}\n                 * @property {Track} track\n                 *           A reference to track that was added.\n                 */\n                this.trigger({\n                    track,\n                    type: 'addtrack',\n                    target: this\n                });\n            }\n\n            /**\n             * Triggered when a track label is changed.\n             *\n             * @event TrackList#addtrack\n             * @type {Event}\n             * @property {Track} track\n             *           A reference to track that was added.\n             */\n            track.labelchange_ = () => {\n                this.trigger({\n                    track,\n                    type: 'labelchange',\n                    target: this\n                });\n            };\n            if (isEvented(track)) {\n                track.addEventListener('labelchange', track.labelchange_);\n            }\n        }\n\n        /**\n         * Remove a {@link Track} from the `TrackList`\n         *\n         * @param { import('./track').default } rtrack\n         *        The audio, video, or text track to remove from the list.\n         *\n         * @fires TrackList#removetrack\n         */\n        removeTrack(rtrack) {\n            let track;\n            for (let i = 0, l = this.length; i < l; i++) {\n                if (this[i] === rtrack) {\n                    track = this[i];\n                    if (track.off) {\n                        track.off();\n                    }\n                    this.tracks_.splice(i, 1);\n                    break;\n                }\n            }\n            if (!track) {\n                return;\n            }\n\n            /**\n             * Triggered when a track is removed from track list.\n             *\n             * @event TrackList#removetrack\n             * @type {Event}\n             * @property {Track} track\n             *           A reference to track that was removed.\n             */\n            this.trigger({\n                track,\n                type: 'removetrack',\n                target: this\n            });\n        }\n\n        /**\n         * Get a Track from the TrackList by a tracks id\n         *\n         * @param {string} id - the id of the track to get\n         * @method getTrackById\n         * @return { import('./track').default }\n         * @private\n         */\n        getTrackById(id) {\n            let result = null;\n            for (let i = 0, l = this.length; i < l; i++) {\n                const track = this[i];\n                if (track.id === id) {\n                    result = track;\n                    break;\n                }\n            }\n            return result;\n        }\n    }\n\n    /**\n     * Triggered when a different track is selected/enabled.\n     *\n     * @event TrackList#change\n     * @type {Event}\n     */\n\n    /**\n     * Events that can be called with on + eventName. See {@link EventHandler}.\n     *\n     * @property {Object} TrackList#allowedEvents_\n     * @protected\n     */\n    TrackList.prototype.allowedEvents_ = {\n        change: 'change',\n        addtrack: 'addtrack',\n        removetrack: 'removetrack',\n        labelchange: 'labelchange'\n    };\n\n    // emulate attribute EventHandler support to allow for feature detection\n    for (const event in TrackList.prototype.allowedEvents_) {\n        TrackList.prototype['on' + event] = null;\n    }\n\n    /**\n     * @file audio-track-list.js\n     */\n\n    /**\n     * Anywhere we call this function we diverge from the spec\n     * as we only support one enabled audiotrack at a time\n     *\n     * @param {AudioTrackList} list\n     *        list to work on\n     *\n     * @param { import('./audio-track').default } track\n     *        The track to skip\n     *\n     * @private\n     */\n    const disableOthers$1 = function (list, track) {\n        for (let i = 0; i < list.length; i++) {\n            if (!Object.keys(list[i]).length || track.id === list[i].id) {\n                continue;\n            }\n            // another audio track is enabled, disable it\n            list[i].enabled = false;\n        }\n    };\n\n    /**\n     * The current list of {@link AudioTrack} for a media file.\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotracklist}\n     * @extends TrackList\n     */\n    class AudioTrackList extends TrackList {\n        /**\n         * Create an instance of this class.\n         *\n         * @param { import('./audio-track').default[] } [tracks=[]]\n         *        A list of `AudioTrack` to instantiate the list with.\n         */\n        constructor(tracks = []) {\n            // make sure only 1 track is enabled\n            // sorted from last index to first index\n            for (let i = tracks.length - 1; i >= 0; i--) {\n                if (tracks[i].enabled) {\n                    disableOthers$1(tracks, tracks[i]);\n                    break;\n                }\n            }\n            super(tracks);\n            this.changing_ = false;\n        }\n\n        /**\n         * Add an {@link AudioTrack} to the `AudioTrackList`.\n         *\n         * @param { import('./audio-track').default } track\n         *        The AudioTrack to add to the list\n         *\n         * @fires TrackList#addtrack\n         */\n        addTrack(track) {\n            if (track.enabled) {\n                disableOthers$1(this, track);\n            }\n            super.addTrack(track);\n            // native tracks don't have this\n            if (!track.addEventListener) {\n                return;\n            }\n            track.enabledChange_ = () => {\n                // when we are disabling other tracks (since we don't support\n                // more than one track at a time) we will set changing_\n                // to true so that we don't trigger additional change events\n                if (this.changing_) {\n                    return;\n                }\n                this.changing_ = true;\n                disableOthers$1(this, track);\n                this.changing_ = false;\n                this.trigger('change');\n            };\n\n            /**\n             * @listens AudioTrack#enabledchange\n             * @fires TrackList#change\n             */\n            track.addEventListener('enabledchange', track.enabledChange_);\n        }\n        removeTrack(rtrack) {\n            super.removeTrack(rtrack);\n            if (rtrack.removeEventListener && rtrack.enabledChange_) {\n                rtrack.removeEventListener('enabledchange', rtrack.enabledChange_);\n                rtrack.enabledChange_ = null;\n            }\n        }\n    }\n\n    /**\n     * @file video-track-list.js\n     */\n\n    /**\n     * Un-select all other {@link VideoTrack}s that are selected.\n     *\n     * @param {VideoTrackList} list\n     *        list to work on\n     *\n     * @param { import('./video-track').default } track\n     *        The track to skip\n     *\n     * @private\n     */\n    const disableOthers = function (list, track) {\n        for (let i = 0; i < list.length; i++) {\n            if (!Object.keys(list[i]).length || track.id === list[i].id) {\n                continue;\n            }\n            // another video track is enabled, disable it\n            list[i].selected = false;\n        }\n    };\n\n    /**\n     * The current list of {@link VideoTrack} for a video.\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotracklist}\n     * @extends TrackList\n     */\n    class VideoTrackList extends TrackList {\n        /**\n         * Create an instance of this class.\n         *\n         * @param {VideoTrack[]} [tracks=[]]\n         *        A list of `VideoTrack` to instantiate the list with.\n         */\n        constructor(tracks = []) {\n            // make sure only 1 track is enabled\n            // sorted from last index to first index\n            for (let i = tracks.length - 1; i >= 0; i--) {\n                if (tracks[i].selected) {\n                    disableOthers(tracks, tracks[i]);\n                    break;\n                }\n            }\n            super(tracks);\n            this.changing_ = false;\n\n            /**\n             * @member {number} VideoTrackList#selectedIndex\n             *         The current index of the selected {@link VideoTrack`}.\n             */\n            Object.defineProperty(this, 'selectedIndex', {\n                get() {\n                    for (let i = 0; i < this.length; i++) {\n                        if (this[i].selected) {\n                            return i;\n                        }\n                    }\n                    return -1;\n                },\n                set() {}\n            });\n        }\n\n        /**\n         * Add a {@link VideoTrack} to the `VideoTrackList`.\n         *\n         * @param { import('./video-track').default } track\n         *        The VideoTrack to add to the list\n         *\n         * @fires TrackList#addtrack\n         */\n        addTrack(track) {\n            if (track.selected) {\n                disableOthers(this, track);\n            }\n            super.addTrack(track);\n            // native tracks don't have this\n            if (!track.addEventListener) {\n                return;\n            }\n            track.selectedChange_ = () => {\n                if (this.changing_) {\n                    return;\n                }\n                this.changing_ = true;\n                disableOthers(this, track);\n                this.changing_ = false;\n                this.trigger('change');\n            };\n\n            /**\n             * @listens VideoTrack#selectedchange\n             * @fires TrackList#change\n             */\n            track.addEventListener('selectedchange', track.selectedChange_);\n        }\n        removeTrack(rtrack) {\n            super.removeTrack(rtrack);\n            if (rtrack.removeEventListener && rtrack.selectedChange_) {\n                rtrack.removeEventListener('selectedchange', rtrack.selectedChange_);\n                rtrack.selectedChange_ = null;\n            }\n        }\n    }\n\n    /**\n     * @file text-track-list.js\n     */\n\n    /**\n     * The current list of {@link TextTrack} for a media file.\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttracklist}\n     * @extends TrackList\n     */\n    class TextTrackList extends TrackList {\n        /**\n         * Add a {@link TextTrack} to the `TextTrackList`\n         *\n         * @param { import('./text-track').default } track\n         *        The text track to add to the list.\n         *\n         * @fires TrackList#addtrack\n         */\n        addTrack(track) {\n            super.addTrack(track);\n            if (!this.queueChange_) {\n                this.queueChange_ = () => this.queueTrigger('change');\n            }\n            if (!this.triggerSelectedlanguagechange) {\n                this.triggerSelectedlanguagechange_ = () => this.trigger('selectedlanguagechange');\n            }\n\n            /**\n             * @listens TextTrack#modechange\n             * @fires TrackList#change\n             */\n            track.addEventListener('modechange', this.queueChange_);\n            const nonLanguageTextTrackKind = ['metadata', 'chapters'];\n            if (nonLanguageTextTrackKind.indexOf(track.kind) === -1) {\n                track.addEventListener('modechange', this.triggerSelectedlanguagechange_);\n            }\n        }\n        removeTrack(rtrack) {\n            super.removeTrack(rtrack);\n\n            // manually remove the event handlers we added\n            if (rtrack.removeEventListener) {\n                if (this.queueChange_) {\n                    rtrack.removeEventListener('modechange', this.queueChange_);\n                }\n                if (this.selectedlanguagechange_) {\n                    rtrack.removeEventListener('modechange', this.triggerSelectedlanguagechange_);\n                }\n            }\n        }\n    }\n\n    /**\n     * @file html-track-element-list.js\n     */\n\n    /**\n     * The current list of {@link HtmlTrackElement}s.\n     */\n    class HtmlTrackElementList {\n        /**\n         * Create an instance of this class.\n         *\n         * @param {HtmlTrackElement[]} [tracks=[]]\n         *        A list of `HtmlTrackElement` to instantiate the list with.\n         */\n        constructor(trackElements = []) {\n            this.trackElements_ = [];\n\n            /**\n             * @memberof HtmlTrackElementList\n             * @member {number} length\n             *         The current number of `Track`s in the this Trackist.\n             * @instance\n             */\n            Object.defineProperty(this, 'length', {\n                get() {\n                    return this.trackElements_.length;\n                }\n            });\n            for (let i = 0, length = trackElements.length; i < length; i++) {\n                this.addTrackElement_(trackElements[i]);\n            }\n        }\n\n        /**\n         * Add an {@link HtmlTrackElement} to the `HtmlTrackElementList`\n         *\n         * @param {HtmlTrackElement} trackElement\n         *        The track element to add to the list.\n         *\n         * @private\n         */\n        addTrackElement_(trackElement) {\n            const index = this.trackElements_.length;\n            if (!('' + index in this)) {\n                Object.defineProperty(this, index, {\n                    get() {\n                        return this.trackElements_[index];\n                    }\n                });\n            }\n\n            // Do not add duplicate elements\n            if (this.trackElements_.indexOf(trackElement) === -1) {\n                this.trackElements_.push(trackElement);\n            }\n        }\n\n        /**\n         * Get an {@link HtmlTrackElement} from the `HtmlTrackElementList` given an\n         * {@link TextTrack}.\n         *\n         * @param {TextTrack} track\n         *        The track associated with a track element.\n         *\n         * @return {HtmlTrackElement|undefined}\n         *         The track element that was found or undefined.\n         *\n         * @private\n         */\n        getTrackElementByTrack_(track) {\n            let trackElement_;\n            for (let i = 0, length = this.trackElements_.length; i < length; i++) {\n                if (track === this.trackElements_[i].track) {\n                    trackElement_ = this.trackElements_[i];\n                    break;\n                }\n            }\n            return trackElement_;\n        }\n\n        /**\n         * Remove a {@link HtmlTrackElement} from the `HtmlTrackElementList`\n         *\n         * @param {HtmlTrackElement} trackElement\n         *        The track element to remove from the list.\n         *\n         * @private\n         */\n        removeTrackElement_(trackElement) {\n            for (let i = 0, length = this.trackElements_.length; i < length; i++) {\n                if (trackElement === this.trackElements_[i]) {\n                    if (this.trackElements_[i].track && typeof this.trackElements_[i].track.off === 'function') {\n                        this.trackElements_[i].track.off();\n                    }\n                    if (typeof this.trackElements_[i].off === 'function') {\n                        this.trackElements_[i].off();\n                    }\n                    this.trackElements_.splice(i, 1);\n                    break;\n                }\n            }\n        }\n    }\n\n    /**\n     * @file text-track-cue-list.js\n     */\n\n    /**\n     * @typedef {Object} TextTrackCueList~TextTrackCue\n     *\n     * @property {string} id\n     *           The unique id for this text track cue\n     *\n     * @property {number} startTime\n     *           The start time for this text track cue\n     *\n     * @property {number} endTime\n     *           The end time for this text track cue\n     *\n     * @property {boolean} pauseOnExit\n     *           Pause when the end time is reached if true.\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcue}\n     */\n\n    /**\n     * A List of TextTrackCues.\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcuelist}\n     */\n    class TextTrackCueList {\n        /**\n         * Create an instance of this class..\n         *\n         * @param {Array} cues\n         *        A list of cues to be initialized with\n         */\n        constructor(cues) {\n            TextTrackCueList.prototype.setCues_.call(this, cues);\n\n            /**\n             * @memberof TextTrackCueList\n             * @member {number} length\n             *         The current number of `TextTrackCue`s in the TextTrackCueList.\n             * @instance\n             */\n            Object.defineProperty(this, 'length', {\n                get() {\n                    return this.length_;\n                }\n            });\n        }\n\n        /**\n         * A setter for cues in this list. Creates getters\n         * an an index for the cues.\n         *\n         * @param {Array} cues\n         *        An array of cues to set\n         *\n         * @private\n         */\n        setCues_(cues) {\n            const oldLength = this.length || 0;\n            let i = 0;\n            const l = cues.length;\n            this.cues_ = cues;\n            this.length_ = cues.length;\n            const defineProp = function (index) {\n                if (!('' + index in this)) {\n                    Object.defineProperty(this, '' + index, {\n                        get() {\n                            return this.cues_[index];\n                        }\n                    });\n                }\n            };\n            if (oldLength < l) {\n                i = oldLength;\n                for (; i < l; i++) {\n                    defineProp.call(this, i);\n                }\n            }\n        }\n\n        /**\n         * Get a `TextTrackCue` that is currently in the `TextTrackCueList` by id.\n         *\n         * @param {string} id\n         *        The id of the cue that should be searched for.\n         *\n         * @return {TextTrackCueList~TextTrackCue|null}\n         *         A single cue or null if none was found.\n         */\n        getCueById(id) {\n            let result = null;\n            for (let i = 0, l = this.length; i < l; i++) {\n                const cue = this[i];\n                if (cue.id === id) {\n                    result = cue;\n                    break;\n                }\n            }\n            return result;\n        }\n    }\n\n    /**\n     * @file track-kinds.js\n     */\n\n    /**\n     * All possible `VideoTrackKind`s\n     *\n     * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-videotrack-kind\n     * @typedef VideoTrack~Kind\n     * @enum\n     */\n    const VideoTrackKind = {\n        alternative: 'alternative',\n        captions: 'captions',\n        main: 'main',\n        sign: 'sign',\n        subtitles: 'subtitles',\n        commentary: 'commentary'\n    };\n\n    /**\n     * All possible `AudioTrackKind`s\n     *\n     * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-audiotrack-kind\n     * @typedef AudioTrack~Kind\n     * @enum\n     */\n    const AudioTrackKind = {\n        'alternative': 'alternative',\n        'descriptions': 'descriptions',\n        'main': 'main',\n        'main-desc': 'main-desc',\n        'translation': 'translation',\n        'commentary': 'commentary'\n    };\n\n    /**\n     * All possible `TextTrackKind`s\n     *\n     * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-texttrack-kind\n     * @typedef TextTrack~Kind\n     * @enum\n     */\n    const TextTrackKind = {\n        subtitles: 'subtitles',\n        captions: 'captions',\n        descriptions: 'descriptions',\n        chapters: 'chapters',\n        metadata: 'metadata'\n    };\n\n    /**\n     * All possible `TextTrackMode`s\n     *\n     * @see https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackmode\n     * @typedef TextTrack~Mode\n     * @enum\n     */\n    const TextTrackMode = {\n        disabled: 'disabled',\n        hidden: 'hidden',\n        showing: 'showing'\n    };\n\n    /**\n     * @file track.js\n     */\n\n    /**\n     * A Track class that contains all of the common functionality for {@link AudioTrack},\n     * {@link VideoTrack}, and {@link TextTrack}.\n     *\n     * > Note: This class should not be used directly\n     *\n     * @see {@link https://html.spec.whatwg.org/multipage/embedded-content.html}\n     * @extends EventTarget\n     * @abstract\n     */\n    class Track extends EventTarget$2 {\n        /**\n         * Create an instance of this class.\n         *\n         * @param {Object} [options={}]\n         *        Object of option names and values\n         *\n         * @param {string} [options.kind='']\n         *        A valid kind for the track type you are creating.\n         *\n         * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n         *        A unique id for this AudioTrack.\n         *\n         * @param {string} [options.label='']\n         *        The menu label for this track.\n         *\n         * @param {string} [options.language='']\n         *        A valid two character language code.\n         *\n         * @abstract\n         */\n        constructor(options = {}) {\n            super();\n            const trackProps = {\n                id: options.id || 'vjs_track_' + newGUID(),\n                kind: options.kind || '',\n                language: options.language || ''\n            };\n            let label = options.label || '';\n\n            /**\n             * @memberof Track\n             * @member {string} id\n             *         The id of this track. Cannot be changed after creation.\n             * @instance\n             *\n             * @readonly\n             */\n\n            /**\n             * @memberof Track\n             * @member {string} kind\n             *         The kind of track that this is. Cannot be changed after creation.\n             * @instance\n             *\n             * @readonly\n             */\n\n            /**\n             * @memberof Track\n             * @member {string} language\n             *         The two letter language code for this track. Cannot be changed after\n             *         creation.\n             * @instance\n             *\n             * @readonly\n             */\n\n            for (const key in trackProps) {\n                Object.defineProperty(this, key, {\n                    get() {\n                        return trackProps[key];\n                    },\n                    set() {}\n                });\n            }\n\n            /**\n             * @memberof Track\n             * @member {string} label\n             *         The label of this track. Cannot be changed after creation.\n             * @instance\n             *\n             * @fires Track#labelchange\n             */\n            Object.defineProperty(this, 'label', {\n                get() {\n                    return label;\n                },\n                set(newLabel) {\n                    if (newLabel !== label) {\n                        label = newLabel;\n\n                        /**\n                         * An event that fires when label changes on this track.\n                         *\n                         * > Note: This is not part of the spec!\n                         *\n                         * @event Track#labelchange\n                         * @type {Event}\n                         */\n                        this.trigger('labelchange');\n                    }\n                }\n            });\n        }\n    }\n\n    /**\n     * @file url.js\n     * @module url\n     */\n\n    /**\n     * @typedef {Object} url:URLObject\n     *\n     * @property {string} protocol\n     *           The protocol of the url that was parsed.\n     *\n     * @property {string} hostname\n     *           The hostname of the url that was parsed.\n     *\n     * @property {string} port\n     *           The port of the url that was parsed.\n     *\n     * @property {string} pathname\n     *           The pathname of the url that was parsed.\n     *\n     * @property {string} search\n     *           The search query of the url that was parsed.\n     *\n     * @property {string} hash\n     *           The hash of the url that was parsed.\n     *\n     * @property {string} host\n     *           The host of the url that was parsed.\n     */\n\n    /**\n     * Resolve and parse the elements of a URL.\n     *\n     * @function\n     * @param    {String} url\n     *           The url to parse\n     *\n     * @return   {url:URLObject}\n     *           An object of url details\n     */\n    const parseUrl = function (url) {\n        // This entire method can be replace with URL once we are able to drop IE11\n\n        const props = ['protocol', 'hostname', 'port', 'pathname', 'search', 'hash', 'host'];\n\n        // add the url to an anchor and let the browser parse the URL\n        const a = document.createElement('a');\n        a.href = url;\n\n        // Copy the specific URL properties to a new object\n        // This is also needed for IE because the anchor loses its\n        // properties when it's removed from the dom\n        const details = {};\n        for (let i = 0; i < props.length; i++) {\n            details[props[i]] = a[props[i]];\n        }\n\n        // IE adds the port to the host property unlike everyone else. If\n        // a port identifier is added for standard ports, strip it.\n        if (details.protocol === 'http:') {\n            details.host = details.host.replace(/:80$/, '');\n        }\n        if (details.protocol === 'https:') {\n            details.host = details.host.replace(/:443$/, '');\n        }\n        if (!details.protocol) {\n            details.protocol = window.location.protocol;\n        }\n\n        /* istanbul ignore if */\n        if (!details.host) {\n            details.host = window.location.host;\n        }\n        return details;\n    };\n\n    /**\n     * Get absolute version of relative URL.\n     *\n     * @function\n     * @param    {string} url\n     *           URL to make absolute\n     *\n     * @return   {string}\n     *           Absolute URL\n     *\n     * @see      http://stackoverflow.com/questions/470832/getting-an-absolute-url-from-a-relative-one-ie6-issue\n     */\n    const getAbsoluteURL = function (url) {\n        // Check if absolute URL\n        if (!url.match(/^https?:\\/\\//)) {\n            // Add the url to an anchor and let the browser parse it to convert to an absolute url\n            const a = document.createElement('a');\n            a.href = url;\n            url = a.href;\n        }\n        return url;\n    };\n\n    /**\n     * Returns the extension of the passed file name. It will return an empty string\n     * if passed an invalid path.\n     *\n     * @function\n     * @param    {string} path\n     *           The fileName path like '/path/to/file.mp4'\n     *\n     * @return  {string}\n     *           The extension in lower case or an empty string if no\n     *           extension could be found.\n     */\n    const getFileExtension = function (path) {\n        if (typeof path === 'string') {\n            const splitPathRe = /^(\\/?)([\\s\\S]*?)((?:\\.{1,2}|[^\\/]+?)(\\.([^\\.\\/\\?]+)))(?:[\\/]*|[\\?].*)$/;\n            const pathParts = splitPathRe.exec(path);\n            if (pathParts) {\n                return pathParts.pop().toLowerCase();\n            }\n        }\n        return '';\n    };\n\n    /**\n     * Returns whether the url passed is a cross domain request or not.\n     *\n     * @function\n     * @param    {string} url\n     *           The url to check.\n     *\n     * @param    {Object} [winLoc]\n     *           the domain to check the url against, defaults to window.location\n     *\n     * @param    {string} [winLoc.protocol]\n     *           The window location protocol defaults to window.location.protocol\n     *\n     * @param    {string} [winLoc.host]\n     *           The window location host defaults to window.location.host\n     *\n     * @return   {boolean}\n     *           Whether it is a cross domain request or not.\n     */\n    const isCrossOrigin = function (url, winLoc = window.location) {\n        const urlInfo = parseUrl(url);\n\n        // IE8 protocol relative urls will return ':' for protocol\n        const srcProtocol = urlInfo.protocol === ':' ? winLoc.protocol : urlInfo.protocol;\n\n        // Check if url is for another domain/origin\n        // IE8 doesn't know location.origin, so we won't rely on it here\n        const crossOrigin = srcProtocol + urlInfo.host !== winLoc.protocol + winLoc.host;\n        return crossOrigin;\n    };\n\n    var Url = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        parseUrl: parseUrl,\n        getAbsoluteURL: getAbsoluteURL,\n        getFileExtension: getFileExtension,\n        isCrossOrigin: isCrossOrigin\n    });\n\n    var win;\n    if (typeof window !== \"undefined\") {\n        win = window;\n    } else if (typeof commonjsGlobal !== \"undefined\") {\n        win = commonjsGlobal;\n    } else if (typeof self !== \"undefined\") {\n        win = self;\n    } else {\n        win = {};\n    }\n    var window_1 = win;\n\n    var _extends_1 = createCommonjsModule(function (module) {\n        function _extends() {\n            module.exports = _extends = Object.assign ? Object.assign.bind() : function (target) {\n                for (var i = 1; i < arguments.length; i++) {\n                    var source = arguments[i];\n                    for (var key in source) {\n                        if (Object.prototype.hasOwnProperty.call(source, key)) {\n                            target[key] = source[key];\n                        }\n                    }\n                }\n                return target;\n            }, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;\n            return _extends.apply(this, arguments);\n        }\n        module.exports = _extends, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;\n    });\n    var _extends$1 = unwrapExports(_extends_1);\n\n    var isFunction_1 = isFunction;\n    var toString = Object.prototype.toString;\n    function isFunction(fn) {\n        if (!fn) {\n            return false;\n        }\n        var string = toString.call(fn);\n        return string === '[object Function]' || typeof fn === 'function' && string !== '[object RegExp]' || typeof window !== 'undefined' && (\n            // IE8 and below\n            fn === window.setTimeout || fn === window.alert || fn === window.confirm || fn === window.prompt);\n    }\n\n    var httpResponseHandler = function httpResponseHandler(callback, decodeResponseBody) {\n        if (decodeResponseBody === void 0) {\n            decodeResponseBody = false;\n        }\n        return function (err, response, responseBody) {\n            // if the XHR failed, return that error\n            if (err) {\n                callback(err);\n                return;\n            } // if the HTTP status code is 4xx or 5xx, the request also failed\n\n            if (response.statusCode >= 400 && response.statusCode <= 599) {\n                var cause = responseBody;\n                if (decodeResponseBody) {\n                    if (window_1.TextDecoder) {\n                        var charset = getCharset(response.headers && response.headers['content-type']);\n                        try {\n                            cause = new TextDecoder(charset).decode(responseBody);\n                        } catch (e) {}\n                    } else {\n                        cause = String.fromCharCode.apply(null, new Uint8Array(responseBody));\n                    }\n                }\n                callback({\n                    cause: cause\n                });\n                return;\n            } // otherwise, request succeeded\n\n            callback(null, responseBody);\n        };\n    };\n    function getCharset(contentTypeHeader) {\n        if (contentTypeHeader === void 0) {\n            contentTypeHeader = '';\n        }\n        return contentTypeHeader.toLowerCase().split(';').reduce(function (charset, contentType) {\n            var _contentType$split = contentType.split('='),\n                type = _contentType$split[0],\n                value = _contentType$split[1];\n            if (type.trim() === 'charset') {\n                return value.trim();\n            }\n            return charset;\n        }, 'utf-8');\n    }\n    var httpHandler = httpResponseHandler;\n\n    createXHR.httpHandler = httpHandler;\n    /**\n     * @license\n     * slighly modified parse-headers 2.0.2 <https://github.com/kesla/parse-headers/>\n     * Copyright (c) 2014 David Björklund\n     * Available under the MIT license\n     * <https://github.com/kesla/parse-headers/blob/master/LICENCE>\n     */\n\n    var parseHeaders = function parseHeaders(headers) {\n        var result = {};\n        if (!headers) {\n            return result;\n        }\n        headers.trim().split('\\n').forEach(function (row) {\n            var index = row.indexOf(':');\n            var key = row.slice(0, index).trim().toLowerCase();\n            var value = row.slice(index + 1).trim();\n            if (typeof result[key] === 'undefined') {\n                result[key] = value;\n            } else if (Array.isArray(result[key])) {\n                result[key].push(value);\n            } else {\n                result[key] = [result[key], value];\n            }\n        });\n        return result;\n    };\n    var lib = createXHR; // Allow use of default import syntax in TypeScript\n\n    var default_1 = createXHR;\n    createXHR.XMLHttpRequest = window_1.XMLHttpRequest || noop$1;\n    createXHR.XDomainRequest = \"withCredentials\" in new createXHR.XMLHttpRequest() ? createXHR.XMLHttpRequest : window_1.XDomainRequest;\n    forEachArray([\"get\", \"put\", \"post\", \"patch\", \"head\", \"delete\"], function (method) {\n        createXHR[method === \"delete\" ? \"del\" : method] = function (uri, options, callback) {\n            options = initParams(uri, options, callback);\n            options.method = method.toUpperCase();\n            return _createXHR(options);\n        };\n    });\n    function forEachArray(array, iterator) {\n        for (var i = 0; i < array.length; i++) {\n            iterator(array[i]);\n        }\n    }\n    function isEmpty(obj) {\n        for (var i in obj) {\n            if (obj.hasOwnProperty(i)) return false;\n        }\n        return true;\n    }\n    function initParams(uri, options, callback) {\n        var params = uri;\n        if (isFunction_1(options)) {\n            callback = options;\n            if (typeof uri === \"string\") {\n                params = {\n                    uri: uri\n                };\n            }\n        } else {\n            params = _extends_1({}, options, {\n                uri: uri\n            });\n        }\n        params.callback = callback;\n        return params;\n    }\n    function createXHR(uri, options, callback) {\n        options = initParams(uri, options, callback);\n        return _createXHR(options);\n    }\n    function _createXHR(options) {\n        if (typeof options.callback === \"undefined\") {\n            throw new Error(\"callback argument missing\");\n        }\n        var called = false;\n        var callback = function cbOnce(err, response, body) {\n            if (!called) {\n                called = true;\n                options.callback(err, response, body);\n            }\n        };\n        function readystatechange() {\n            if (xhr.readyState === 4) {\n                setTimeout(loadFunc, 0);\n            }\n        }\n        function getBody() {\n            // Chrome with requestType=blob throws errors arround when even testing access to responseText\n            var body = undefined;\n            if (xhr.response) {\n                body = xhr.response;\n            } else {\n                body = xhr.responseText || getXml(xhr);\n            }\n            if (isJson) {\n                try {\n                    body = JSON.parse(body);\n                } catch (e) {}\n            }\n            return body;\n        }\n        function errorFunc(evt) {\n            clearTimeout(timeoutTimer);\n            if (!(evt instanceof Error)) {\n                evt = new Error(\"\" + (evt || \"Unknown XMLHttpRequest Error\"));\n            }\n            evt.statusCode = 0;\n            return callback(evt, failureResponse);\n        } // will load the data & process the response in a special response object\n\n        function loadFunc() {\n            if (aborted) return;\n            var status;\n            clearTimeout(timeoutTimer);\n            if (options.useXDR && xhr.status === undefined) {\n                //IE8 CORS GET successful response doesn't have a status field, but body is fine\n                status = 200;\n            } else {\n                status = xhr.status === 1223 ? 204 : xhr.status;\n            }\n            var response = failureResponse;\n            var err = null;\n            if (status !== 0) {\n                response = {\n                    body: getBody(),\n                    statusCode: status,\n                    method: method,\n                    headers: {},\n                    url: uri,\n                    rawRequest: xhr\n                };\n                if (xhr.getAllResponseHeaders) {\n                    //remember xhr can in fact be XDR for CORS in IE\n                    response.headers = parseHeaders(xhr.getAllResponseHeaders());\n                }\n            } else {\n                err = new Error(\"Internal XMLHttpRequest Error\");\n            }\n            return callback(err, response, response.body);\n        }\n        var xhr = options.xhr || null;\n        if (!xhr) {\n            if (options.cors || options.useXDR) {\n                xhr = new createXHR.XDomainRequest();\n            } else {\n                xhr = new createXHR.XMLHttpRequest();\n            }\n        }\n        var key;\n        var aborted;\n        var uri = xhr.url = options.uri || options.url;\n        var method = xhr.method = options.method || \"GET\";\n        var body = options.body || options.data;\n        var headers = xhr.headers = options.headers || {};\n        var sync = !!options.sync;\n        var isJson = false;\n        var timeoutTimer;\n        var failureResponse = {\n            body: undefined,\n            headers: {},\n            statusCode: 0,\n            method: method,\n            url: uri,\n            rawRequest: xhr\n        };\n        if (\"json\" in options && options.json !== false) {\n            isJson = true;\n            headers[\"accept\"] || headers[\"Accept\"] || (headers[\"Accept\"] = \"application/json\"); //Don't override existing accept header declared by user\n\n            if (method !== \"GET\" && method !== \"HEAD\") {\n                headers[\"content-type\"] || headers[\"Content-Type\"] || (headers[\"Content-Type\"] = \"application/json\"); //Don't override existing accept header declared by user\n\n                body = JSON.stringify(options.json === true ? body : options.json);\n            }\n        }\n        xhr.onreadystatechange = readystatechange;\n        xhr.onload = loadFunc;\n        xhr.onerror = errorFunc; // IE9 must have onprogress be set to a unique function.\n\n        xhr.onprogress = function () {// IE must die\n        };\n        xhr.onabort = function () {\n            aborted = true;\n        };\n        xhr.ontimeout = errorFunc;\n        xhr.open(method, uri, !sync, options.username, options.password); //has to be after open\n\n        if (!sync) {\n            xhr.withCredentials = !!options.withCredentials;\n        } // Cannot set timeout with sync request\n        // not setting timeout on the xhr object, because of old webkits etc. not handling that correctly\n        // both npm's request and jquery 1.x use this kind of timeout, so this is being consistent\n\n        if (!sync && options.timeout > 0) {\n            timeoutTimer = setTimeout(function () {\n                if (aborted) return;\n                aborted = true; //IE9 may still call readystatechange\n\n                xhr.abort(\"timeout\");\n                var e = new Error(\"XMLHttpRequest timeout\");\n                e.code = \"ETIMEDOUT\";\n                errorFunc(e);\n            }, options.timeout);\n        }\n        if (xhr.setRequestHeader) {\n            for (key in headers) {\n                if (headers.hasOwnProperty(key)) {\n                    xhr.setRequestHeader(key, headers[key]);\n                }\n            }\n        } else if (options.headers && !isEmpty(options.headers)) {\n            throw new Error(\"Headers cannot be set on an XDomainRequest object\");\n        }\n        if (\"responseType\" in options) {\n            xhr.responseType = options.responseType;\n        }\n        if (\"beforeSend\" in options && typeof options.beforeSend === \"function\") {\n            options.beforeSend(xhr);\n        } // Microsoft Edge browser sends \"undefined\" when send is called with undefined value.\n        // XMLHttpRequest spec says to pass null as body to indicate no body\n        // See https://github.com/naugtur/xhr/issues/100.\n\n        xhr.send(body || null);\n        return xhr;\n    }\n    function getXml(xhr) {\n        // xhr.responseXML will throw Exception \"InvalidStateError\" or \"DOMException\"\n        // See https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/responseXML.\n        try {\n            if (xhr.responseType === \"document\") {\n                return xhr.responseXML;\n            }\n            var firefoxBugTakenEffect = xhr.responseXML && xhr.responseXML.documentElement.nodeName === \"parsererror\";\n            if (xhr.responseType === \"\" && !firefoxBugTakenEffect) {\n                return xhr.responseXML;\n            }\n        } catch (e) {}\n        return null;\n    }\n    function noop$1() {}\n    lib.default = default_1;\n\n    /**\n     * @file text-track.js\n     */\n\n    /**\n     * Takes a webvtt file contents and parses it into cues\n     *\n     * @param {string} srcContent\n     *        webVTT file contents\n     *\n     * @param {TextTrack} track\n     *        TextTrack to add cues to. Cues come from the srcContent.\n     *\n     * @private\n     */\n    const parseCues = function (srcContent, track) {\n        const parser = new window.WebVTT.Parser(window, window.vttjs, window.WebVTT.StringDecoder());\n        const errors = [];\n        parser.oncue = function (cue) {\n            track.addCue(cue);\n        };\n        parser.onparsingerror = function (error) {\n            errors.push(error);\n        };\n        parser.onflush = function () {\n            track.trigger({\n                type: 'loadeddata',\n                target: track\n            });\n        };\n        parser.parse(srcContent);\n        if (errors.length > 0) {\n            if (window.console && window.console.groupCollapsed) {\n                window.console.groupCollapsed(`Text Track parsing errors for ${track.src}`);\n            }\n            errors.forEach(error => log$1.error(error));\n            if (window.console && window.console.groupEnd) {\n                window.console.groupEnd();\n            }\n        }\n        parser.flush();\n    };\n\n    /**\n     * Load a `TextTrack` from a specified url.\n     *\n     * @param {string} src\n     *        Url to load track from.\n     *\n     * @param {TextTrack} track\n     *        Track to add cues to. Comes from the content at the end of `url`.\n     *\n     * @private\n     */\n    const loadTrack = function (src, track) {\n        const opts = {\n            uri: src\n        };\n        const crossOrigin = isCrossOrigin(src);\n        if (crossOrigin) {\n            opts.cors = crossOrigin;\n        }\n        const withCredentials = track.tech_.crossOrigin() === 'use-credentials';\n        if (withCredentials) {\n            opts.withCredentials = withCredentials;\n        }\n        lib(opts, bind_(this, function (err, response, responseBody) {\n            if (err) {\n                return log$1.error(err, response);\n            }\n            track.loaded_ = true;\n\n            // Make sure that vttjs has loaded, otherwise, wait till it finished loading\n            // NOTE: this is only used for the alt/video.novtt.js build\n            if (typeof window.WebVTT !== 'function') {\n                if (track.tech_) {\n                    // to prevent use before define eslint error, we define loadHandler\n                    // as a let here\n                    track.tech_.any(['vttjsloaded', 'vttjserror'], event => {\n                        if (event.type === 'vttjserror') {\n                            log$1.error(`vttjs failed to load, stopping trying to process ${track.src}`);\n                            return;\n                        }\n                        return parseCues(responseBody, track);\n                    });\n                }\n            } else {\n                parseCues(responseBody, track);\n            }\n        }));\n    };\n\n    /**\n     * A representation of a single `TextTrack`.\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrack}\n     * @extends Track\n     */\n    class TextTrack extends Track {\n        /**\n         * Create an instance of this class.\n         *\n         * @param {Object} options={}\n         *        Object of option names and values\n         *\n         * @param { import('../tech/tech').default } options.tech\n         *        A reference to the tech that owns this TextTrack.\n         *\n         * @param {TextTrack~Kind} [options.kind='subtitles']\n         *        A valid text track kind.\n         *\n         * @param {TextTrack~Mode} [options.mode='disabled']\n         *        A valid text track mode.\n         *\n         * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n         *        A unique id for this TextTrack.\n         *\n         * @param {string} [options.label='']\n         *        The menu label for this track.\n         *\n         * @param {string} [options.language='']\n         *        A valid two character language code.\n         *\n         * @param {string} [options.srclang='']\n         *        A valid two character language code. An alternative, but deprioritized\n         *        version of `options.language`\n         *\n         * @param {string} [options.src]\n         *        A url to TextTrack cues.\n         *\n         * @param {boolean} [options.default]\n         *        If this track should default to on or off.\n         */\n        constructor(options = {}) {\n            if (!options.tech) {\n                throw new Error('A tech was not provided.');\n            }\n            const settings = merge$2(options, {\n                kind: TextTrackKind[options.kind] || 'subtitles',\n                language: options.language || options.srclang || ''\n            });\n            let mode = TextTrackMode[settings.mode] || 'disabled';\n            const default_ = settings.default;\n            if (settings.kind === 'metadata' || settings.kind === 'chapters') {\n                mode = 'hidden';\n            }\n            super(settings);\n            this.tech_ = settings.tech;\n            this.cues_ = [];\n            this.activeCues_ = [];\n            this.preload_ = this.tech_.preloadTextTracks !== false;\n            const cues = new TextTrackCueList(this.cues_);\n            const activeCues = new TextTrackCueList(this.activeCues_);\n            let changed = false;\n            this.timeupdateHandler = bind_(this, function (event = {}) {\n                if (this.tech_.isDisposed()) {\n                    return;\n                }\n                if (!this.tech_.isReady_) {\n                    if (event.type !== 'timeupdate') {\n                        this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler);\n                    }\n                    return;\n                }\n\n                // Accessing this.activeCues for the side-effects of updating itself\n                // due to its nature as a getter function. Do not remove or cues will\n                // stop updating!\n                // Use the setter to prevent deletion from uglify (pure_getters rule)\n                this.activeCues = this.activeCues;\n                if (changed) {\n                    this.trigger('cuechange');\n                    changed = false;\n                }\n                if (event.type !== 'timeupdate') {\n                    this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler);\n                }\n            });\n            const disposeHandler = () => {\n                this.stopTracking();\n            };\n            this.tech_.one('dispose', disposeHandler);\n            if (mode !== 'disabled') {\n                this.startTracking();\n            }\n            Object.defineProperties(this, {\n                /**\n                 * @memberof TextTrack\n                 * @member {boolean} default\n                 *         If this track was set to be on or off by default. Cannot be changed after\n                 *         creation.\n                 * @instance\n                 *\n                 * @readonly\n                 */\n                default: {\n                    get() {\n                        return default_;\n                    },\n                    set() {}\n                },\n                /**\n                 * @memberof TextTrack\n                 * @member {string} mode\n                 *         Set the mode of this TextTrack to a valid {@link TextTrack~Mode}. Will\n                 *         not be set if setting to an invalid mode.\n                 * @instance\n                 *\n                 * @fires TextTrack#modechange\n                 */\n                mode: {\n                    get() {\n                        return mode;\n                    },\n                    set(newMode) {\n                        if (!TextTrackMode[newMode]) {\n                            return;\n                        }\n                        if (mode === newMode) {\n                            return;\n                        }\n                        mode = newMode;\n                        if (!this.preload_ && mode !== 'disabled' && this.cues.length === 0) {\n                            // On-demand load.\n                            loadTrack(this.src, this);\n                        }\n                        this.stopTracking();\n                        if (mode !== 'disabled') {\n                            this.startTracking();\n                        }\n                        /**\n                         * An event that fires when mode changes on this track. This allows\n                         * the TextTrackList that holds this track to act accordingly.\n                         *\n                         * > Note: This is not part of the spec!\n                         *\n                         * @event TextTrack#modechange\n                         * @type {Event}\n                         */\n                        this.trigger('modechange');\n                    }\n                },\n                /**\n                 * @memberof TextTrack\n                 * @member {TextTrackCueList} cues\n                 *         The text track cue list for this TextTrack.\n                 * @instance\n                 */\n                cues: {\n                    get() {\n                        if (!this.loaded_) {\n                            return null;\n                        }\n                        return cues;\n                    },\n                    set() {}\n                },\n                /**\n                 * @memberof TextTrack\n                 * @member {TextTrackCueList} activeCues\n                 *         The list text track cues that are currently active for this TextTrack.\n                 * @instance\n                 */\n                activeCues: {\n                    get() {\n                        if (!this.loaded_) {\n                            return null;\n                        }\n\n                        // nothing to do\n                        if (this.cues.length === 0) {\n                            return activeCues;\n                        }\n                        const ct = this.tech_.currentTime();\n                        const active = [];\n                        for (let i = 0, l = this.cues.length; i < l; i++) {\n                            const cue = this.cues[i];\n                            if (cue.startTime <= ct && cue.endTime >= ct) {\n                                active.push(cue);\n                            }\n                        }\n                        changed = false;\n                        if (active.length !== this.activeCues_.length) {\n                            changed = true;\n                        } else {\n                            for (let i = 0; i < active.length; i++) {\n                                if (this.activeCues_.indexOf(active[i]) === -1) {\n                                    changed = true;\n                                }\n                            }\n                        }\n                        this.activeCues_ = active;\n                        activeCues.setCues_(this.activeCues_);\n                        return activeCues;\n                    },\n                    // /!\\ Keep this setter empty (see the timeupdate handler above)\n                    set() {}\n                }\n            });\n            if (settings.src) {\n                this.src = settings.src;\n                if (!this.preload_) {\n                    // Tracks will load on-demand.\n                    // Act like we're loaded for other purposes.\n                    this.loaded_ = true;\n                }\n                if (this.preload_ || settings.kind !== 'subtitles' && settings.kind !== 'captions') {\n                    loadTrack(this.src, this);\n                }\n            } else {\n                this.loaded_ = true;\n            }\n        }\n        startTracking() {\n            // More precise cues based on requestVideoFrameCallback with a requestAnimationFram fallback\n            this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler);\n            // Also listen to timeupdate in case rVFC/rAF stops (window in background, audio in video el)\n            this.tech_.on('timeupdate', this.timeupdateHandler);\n        }\n        stopTracking() {\n            if (this.rvf_) {\n                this.tech_.cancelVideoFrameCallback(this.rvf_);\n                this.rvf_ = undefined;\n            }\n            this.tech_.off('timeupdate', this.timeupdateHandler);\n        }\n\n        /**\n         * Add a cue to the internal list of cues.\n         *\n         * @param {TextTrack~Cue} cue\n         *        The cue to add to our internal list\n         */\n        addCue(originalCue) {\n            let cue = originalCue;\n\n            // Testing if the cue is a VTTCue in a way that survives minification\n            if (!('getCueAsHTML' in cue)) {\n                cue = new window.vttjs.VTTCue(originalCue.startTime, originalCue.endTime, originalCue.text);\n                for (const prop in originalCue) {\n                    if (!(prop in cue)) {\n                        cue[prop] = originalCue[prop];\n                    }\n                }\n\n                // make sure that `id` is copied over\n                cue.id = originalCue.id;\n                cue.originalCue_ = originalCue;\n            }\n            const tracks = this.tech_.textTracks();\n            for (let i = 0; i < tracks.length; i++) {\n                if (tracks[i] !== this) {\n                    tracks[i].removeCue(cue);\n                }\n            }\n            this.cues_.push(cue);\n            this.cues.setCues_(this.cues_);\n        }\n\n        /**\n         * Remove a cue from our internal list\n         *\n         * @param {TextTrack~Cue} removeCue\n         *        The cue to remove from our internal list\n         */\n        removeCue(removeCue) {\n            let i = this.cues_.length;\n            while (i--) {\n                const cue = this.cues_[i];\n                if (cue === removeCue || cue.originalCue_ && cue.originalCue_ === removeCue) {\n                    this.cues_.splice(i, 1);\n                    this.cues.setCues_(this.cues_);\n                    break;\n                }\n            }\n        }\n    }\n\n    /**\n     * cuechange - One or more cues in the track have become active or stopped being active.\n     * @protected\n     */\n    TextTrack.prototype.allowedEvents_ = {\n        cuechange: 'cuechange'\n    };\n\n    /**\n     * A representation of a single `AudioTrack`. If it is part of an {@link AudioTrackList}\n     * only one `AudioTrack` in the list will be enabled at a time.\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotrack}\n     * @extends Track\n     */\n    class AudioTrack extends Track {\n        /**\n         * Create an instance of this class.\n         *\n         * @param {Object} [options={}]\n         *        Object of option names and values\n         *\n         * @param {AudioTrack~Kind} [options.kind='']\n         *        A valid audio track kind\n         *\n         * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n         *        A unique id for this AudioTrack.\n         *\n         * @param {string} [options.label='']\n         *        The menu label for this track.\n         *\n         * @param {string} [options.language='']\n         *        A valid two character language code.\n         *\n         * @param {boolean} [options.enabled]\n         *        If this track is the one that is currently playing. If this track is part of\n         *        an {@link AudioTrackList}, only one {@link AudioTrack} will be enabled.\n         */\n        constructor(options = {}) {\n            const settings = merge$2(options, {\n                kind: AudioTrackKind[options.kind] || ''\n            });\n            super(settings);\n            let enabled = false;\n\n            /**\n             * @memberof AudioTrack\n             * @member {boolean} enabled\n             *         If this `AudioTrack` is enabled or not. When setting this will\n             *         fire {@link AudioTrack#enabledchange} if the state of enabled is changed.\n             * @instance\n             *\n             * @fires VideoTrack#selectedchange\n             */\n            Object.defineProperty(this, 'enabled', {\n                get() {\n                    return enabled;\n                },\n                set(newEnabled) {\n                    // an invalid or unchanged value\n                    if (typeof newEnabled !== 'boolean' || newEnabled === enabled) {\n                        return;\n                    }\n                    enabled = newEnabled;\n\n                    /**\n                     * An event that fires when enabled changes on this track. This allows\n                     * the AudioTrackList that holds this track to act accordingly.\n                     *\n                     * > Note: This is not part of the spec! Native tracks will do\n                     *         this internally without an event.\n                     *\n                     * @event AudioTrack#enabledchange\n                     * @type {Event}\n                     */\n                    this.trigger('enabledchange');\n                }\n            });\n\n            // if the user sets this track to selected then\n            // set selected to that true value otherwise\n            // we keep it false\n            if (settings.enabled) {\n                this.enabled = settings.enabled;\n            }\n            this.loaded_ = true;\n        }\n    }\n\n    /**\n     * A representation of a single `VideoTrack`.\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotrack}\n     * @extends Track\n     */\n    class VideoTrack extends Track {\n        /**\n         * Create an instance of this class.\n         *\n         * @param {Object} [options={}]\n         *        Object of option names and values\n         *\n         * @param {string} [options.kind='']\n         *        A valid {@link VideoTrack~Kind}\n         *\n         * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n         *        A unique id for this AudioTrack.\n         *\n         * @param {string} [options.label='']\n         *        The menu label for this track.\n         *\n         * @param {string} [options.language='']\n         *        A valid two character language code.\n         *\n         * @param {boolean} [options.selected]\n         *        If this track is the one that is currently playing.\n         */\n        constructor(options = {}) {\n            const settings = merge$2(options, {\n                kind: VideoTrackKind[options.kind] || ''\n            });\n            super(settings);\n            let selected = false;\n\n            /**\n             * @memberof VideoTrack\n             * @member {boolean} selected\n             *         If this `VideoTrack` is selected or not. When setting this will\n             *         fire {@link VideoTrack#selectedchange} if the state of selected changed.\n             * @instance\n             *\n             * @fires VideoTrack#selectedchange\n             */\n            Object.defineProperty(this, 'selected', {\n                get() {\n                    return selected;\n                },\n                set(newSelected) {\n                    // an invalid or unchanged value\n                    if (typeof newSelected !== 'boolean' || newSelected === selected) {\n                        return;\n                    }\n                    selected = newSelected;\n\n                    /**\n                     * An event that fires when selected changes on this track. This allows\n                     * the VideoTrackList that holds this track to act accordingly.\n                     *\n                     * > Note: This is not part of the spec! Native tracks will do\n                     *         this internally without an event.\n                     *\n                     * @event VideoTrack#selectedchange\n                     * @type {Event}\n                     */\n                    this.trigger('selectedchange');\n                }\n            });\n\n            // if the user sets this track to selected then\n            // set selected to that true value otherwise\n            // we keep it false\n            if (settings.selected) {\n                this.selected = settings.selected;\n            }\n        }\n    }\n\n    /**\n     * @file html-track-element.js\n     */\n\n    /**\n     * A single track represented in the DOM.\n     *\n     * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#htmltrackelement}\n     * @extends EventTarget\n     */\n    class HTMLTrackElement extends EventTarget$2 {\n        /**\n         * Create an instance of this class.\n         *\n         * @param {Object} options={}\n         *        Object of option names and values\n         *\n         * @param { import('../tech/tech').default } options.tech\n         *        A reference to the tech that owns this HTMLTrackElement.\n         *\n         * @param {TextTrack~Kind} [options.kind='subtitles']\n         *        A valid text track kind.\n         *\n         * @param {TextTrack~Mode} [options.mode='disabled']\n         *        A valid text track mode.\n         *\n         * @param {string} [options.id='vjs_track_' + Guid.newGUID()]\n         *        A unique id for this TextTrack.\n         *\n         * @param {string} [options.label='']\n         *        The menu label for this track.\n         *\n         * @param {string} [options.language='']\n         *        A valid two character language code.\n         *\n         * @param {string} [options.srclang='']\n         *        A valid two character language code. An alternative, but deprioritized\n         *        version of `options.language`\n         *\n         * @param {string} [options.src]\n         *        A url to TextTrack cues.\n         *\n         * @param {boolean} [options.default]\n         *        If this track should default to on or off.\n         */\n        constructor(options = {}) {\n            super();\n            let readyState;\n            const track = new TextTrack(options);\n            this.kind = track.kind;\n            this.src = track.src;\n            this.srclang = track.language;\n            this.label = track.label;\n            this.default = track.default;\n            Object.defineProperties(this, {\n                /**\n                 * @memberof HTMLTrackElement\n                 * @member {HTMLTrackElement~ReadyState} readyState\n                 *         The current ready state of the track element.\n                 * @instance\n                 */\n                readyState: {\n                    get() {\n                        return readyState;\n                    }\n                },\n                /**\n                 * @memberof HTMLTrackElement\n                 * @member {TextTrack} track\n                 *         The underlying TextTrack object.\n                 * @instance\n                 *\n                 */\n                track: {\n                    get() {\n                        return track;\n                    }\n                }\n            });\n            readyState = HTMLTrackElement.NONE;\n\n            /**\n             * @listens TextTrack#loadeddata\n             * @fires HTMLTrackElement#load\n             */\n            track.addEventListener('loadeddata', () => {\n                readyState = HTMLTrackElement.LOADED;\n                this.trigger({\n                    type: 'load',\n                    target: this\n                });\n            });\n        }\n    }\n\n    /**\n     * @protected\n     */\n    HTMLTrackElement.prototype.allowedEvents_ = {\n        load: 'load'\n    };\n\n    /**\n     * The text track not loaded state.\n     *\n     * @type {number}\n     * @static\n     */\n    HTMLTrackElement.NONE = 0;\n\n    /**\n     * The text track loading state.\n     *\n     * @type {number}\n     * @static\n     */\n    HTMLTrackElement.LOADING = 1;\n\n    /**\n     * The text track loaded state.\n     *\n     * @type {number}\n     * @static\n     */\n    HTMLTrackElement.LOADED = 2;\n\n    /**\n     * The text track failed to load state.\n     *\n     * @type {number}\n     * @static\n     */\n    HTMLTrackElement.ERROR = 3;\n\n    /*\n   * This file contains all track properties that are used in\n   * player.js, tech.js, html5.js and possibly other techs in the future.\n   */\n\n    const NORMAL = {\n        audio: {\n            ListClass: AudioTrackList,\n            TrackClass: AudioTrack,\n            capitalName: 'Audio'\n        },\n        video: {\n            ListClass: VideoTrackList,\n            TrackClass: VideoTrack,\n            capitalName: 'Video'\n        },\n        text: {\n            ListClass: TextTrackList,\n            TrackClass: TextTrack,\n            capitalName: 'Text'\n        }\n    };\n    Object.keys(NORMAL).forEach(function (type) {\n        NORMAL[type].getterName = `${type}Tracks`;\n        NORMAL[type].privateName = `${type}Tracks_`;\n    });\n    const REMOTE = {\n        remoteText: {\n            ListClass: TextTrackList,\n            TrackClass: TextTrack,\n            capitalName: 'RemoteText',\n            getterName: 'remoteTextTracks',\n            privateName: 'remoteTextTracks_'\n        },\n        remoteTextEl: {\n            ListClass: HtmlTrackElementList,\n            TrackClass: HTMLTrackElement,\n            capitalName: 'RemoteTextTrackEls',\n            getterName: 'remoteTextTrackEls',\n            privateName: 'remoteTextTrackEls_'\n        }\n    };\n    const ALL = Object.assign({}, NORMAL, REMOTE);\n    REMOTE.names = Object.keys(REMOTE);\n    NORMAL.names = Object.keys(NORMAL);\n    ALL.names = [].concat(REMOTE.names).concat(NORMAL.names);\n\n    var minDoc = {};\n\n    var topLevel = typeof commonjsGlobal !== 'undefined' ? commonjsGlobal : typeof window !== 'undefined' ? window : {};\n    var doccy;\n    if (typeof document !== 'undefined') {\n        doccy = document;\n    } else {\n        doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'];\n        if (!doccy) {\n            doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'] = minDoc;\n        }\n    }\n    var document_1 = doccy;\n\n    /**\n     * Copyright 2013 vtt.js Contributors\n     *\n     * Licensed under the Apache License, Version 2.0 (the \"License\");\n     * you may not use this file except in compliance with the License.\n     * You may obtain a copy of the License at\n     *\n     *   http://www.apache.org/licenses/LICENSE-2.0\n     *\n     * Unless required by applicable law or agreed to in writing, software\n     * distributed under the License is distributed on an \"AS IS\" BASIS,\n     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n     * See the License for the specific language governing permissions and\n     * limitations under the License.\n     */\n\n    /* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */\n    /* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */\n\n    var _objCreate = Object.create || function () {\n        function F() {}\n        return function (o) {\n            if (arguments.length !== 1) {\n                throw new Error('Object.create shim only accepts one parameter.');\n            }\n            F.prototype = o;\n            return new F();\n        };\n    }();\n\n    // Creates a new ParserError object from an errorData object. The errorData\n    // object should have default code and message properties. The default message\n    // property can be overriden by passing in a message parameter.\n    // See ParsingError.Errors below for acceptable errors.\n    function ParsingError(errorData, message) {\n        this.name = \"ParsingError\";\n        this.code = errorData.code;\n        this.message = message || errorData.message;\n    }\n    ParsingError.prototype = _objCreate(Error.prototype);\n    ParsingError.prototype.constructor = ParsingError;\n\n    // ParsingError metadata for acceptable ParsingErrors.\n    ParsingError.Errors = {\n        BadSignature: {\n            code: 0,\n            message: \"Malformed WebVTT signature.\"\n        },\n        BadTimeStamp: {\n            code: 1,\n            message: \"Malformed time stamp.\"\n        }\n    };\n\n    // Try to parse input as a time stamp.\n    function parseTimeStamp(input) {\n        function computeSeconds(h, m, s, f) {\n            return (h | 0) * 3600 + (m | 0) * 60 + (s | 0) + (f | 0) / 1000;\n        }\n        var m = input.match(/^(\\d+):(\\d{1,2})(:\\d{1,2})?\\.(\\d{3})/);\n        if (!m) {\n            return null;\n        }\n        if (m[3]) {\n            // Timestamp takes the form of [hours]:[minutes]:[seconds].[milliseconds]\n            return computeSeconds(m[1], m[2], m[3].replace(\":\", \"\"), m[4]);\n        } else if (m[1] > 59) {\n            // Timestamp takes the form of [hours]:[minutes].[milliseconds]\n            // First position is hours as it's over 59.\n            return computeSeconds(m[1], m[2], 0, m[4]);\n        } else {\n            // Timestamp takes the form of [minutes]:[seconds].[milliseconds]\n            return computeSeconds(0, m[1], m[2], m[4]);\n        }\n    }\n\n    // A settings object holds key/value pairs and will ignore anything but the first\n    // assignment to a specific key.\n    function Settings() {\n        this.values = _objCreate(null);\n    }\n    Settings.prototype = {\n        // Only accept the first assignment to any key.\n        set: function (k, v) {\n            if (!this.get(k) && v !== \"\") {\n                this.values[k] = v;\n            }\n        },\n        // Return the value for a key, or a default value.\n        // If 'defaultKey' is passed then 'dflt' is assumed to be an object with\n        // a number of possible default values as properties where 'defaultKey' is\n        // the key of the property that will be chosen; otherwise it's assumed to be\n        // a single value.\n        get: function (k, dflt, defaultKey) {\n            if (defaultKey) {\n                return this.has(k) ? this.values[k] : dflt[defaultKey];\n            }\n            return this.has(k) ? this.values[k] : dflt;\n        },\n        // Check whether we have a value for a key.\n        has: function (k) {\n            return k in this.values;\n        },\n        // Accept a setting if its one of the given alternatives.\n        alt: function (k, v, a) {\n            for (var n = 0; n < a.length; ++n) {\n                if (v === a[n]) {\n                    this.set(k, v);\n                    break;\n                }\n            }\n        },\n        // Accept a setting if its a valid (signed) integer.\n        integer: function (k, v) {\n            if (/^-?\\d+$/.test(v)) {\n                // integer\n                this.set(k, parseInt(v, 10));\n            }\n        },\n        // Accept a setting if its a valid percentage.\n        percent: function (k, v) {\n            if (v.match(/^([\\d]{1,3})(\\.[\\d]*)?%$/)) {\n                v = parseFloat(v);\n                if (v >= 0 && v <= 100) {\n                    this.set(k, v);\n                    return true;\n                }\n            }\n            return false;\n        }\n    };\n\n    // Helper function to parse input into groups separated by 'groupDelim', and\n    // interprete each group as a key/value pair separated by 'keyValueDelim'.\n    function parseOptions(input, callback, keyValueDelim, groupDelim) {\n        var groups = groupDelim ? input.split(groupDelim) : [input];\n        for (var i in groups) {\n            if (typeof groups[i] !== \"string\") {\n                continue;\n            }\n            var kv = groups[i].split(keyValueDelim);\n            if (kv.length !== 2) {\n                continue;\n            }\n            var k = kv[0].trim();\n            var v = kv[1].trim();\n            callback(k, v);\n        }\n    }\n    function parseCue(input, cue, regionList) {\n        // Remember the original input if we need to throw an error.\n        var oInput = input;\n        // 4.1 WebVTT timestamp\n        function consumeTimeStamp() {\n            var ts = parseTimeStamp(input);\n            if (ts === null) {\n                throw new ParsingError(ParsingError.Errors.BadTimeStamp, \"Malformed timestamp: \" + oInput);\n            }\n            // Remove time stamp from input.\n            input = input.replace(/^[^\\sa-zA-Z-]+/, \"\");\n            return ts;\n        }\n\n        // 4.4.2 WebVTT cue settings\n        function consumeCueSettings(input, cue) {\n            var settings = new Settings();\n            parseOptions(input, function (k, v) {\n                switch (k) {\n                    case \"region\":\n                        // Find the last region we parsed with the same region id.\n                        for (var i = regionList.length - 1; i >= 0; i--) {\n                            if (regionList[i].id === v) {\n                                settings.set(k, regionList[i].region);\n                                break;\n                            }\n                        }\n                        break;\n                    case \"vertical\":\n                        settings.alt(k, v, [\"rl\", \"lr\"]);\n                        break;\n                    case \"line\":\n                        var vals = v.split(\",\"),\n                            vals0 = vals[0];\n                        settings.integer(k, vals0);\n                        settings.percent(k, vals0) ? settings.set(\"snapToLines\", false) : null;\n                        settings.alt(k, vals0, [\"auto\"]);\n                        if (vals.length === 2) {\n                            settings.alt(\"lineAlign\", vals[1], [\"start\", \"center\", \"end\"]);\n                        }\n                        break;\n                    case \"position\":\n                        vals = v.split(\",\");\n                        settings.percent(k, vals[0]);\n                        if (vals.length === 2) {\n                            settings.alt(\"positionAlign\", vals[1], [\"start\", \"center\", \"end\"]);\n                        }\n                        break;\n                    case \"size\":\n                        settings.percent(k, v);\n                        break;\n                    case \"align\":\n                        settings.alt(k, v, [\"start\", \"center\", \"end\", \"left\", \"right\"]);\n                        break;\n                }\n            }, /:/, /\\s/);\n\n            // Apply default values for any missing fields.\n            cue.region = settings.get(\"region\", null);\n            cue.vertical = settings.get(\"vertical\", \"\");\n            try {\n                cue.line = settings.get(\"line\", \"auto\");\n            } catch (e) {}\n            cue.lineAlign = settings.get(\"lineAlign\", \"start\");\n            cue.snapToLines = settings.get(\"snapToLines\", true);\n            cue.size = settings.get(\"size\", 100);\n            // Safari still uses the old middle value and won't accept center\n            try {\n                cue.align = settings.get(\"align\", \"center\");\n            } catch (e) {\n                cue.align = settings.get(\"align\", \"middle\");\n            }\n            try {\n                cue.position = settings.get(\"position\", \"auto\");\n            } catch (e) {\n                cue.position = settings.get(\"position\", {\n                    start: 0,\n                    left: 0,\n                    center: 50,\n                    middle: 50,\n                    end: 100,\n                    right: 100\n                }, cue.align);\n            }\n            cue.positionAlign = settings.get(\"positionAlign\", {\n                start: \"start\",\n                left: \"start\",\n                center: \"center\",\n                middle: \"center\",\n                end: \"end\",\n                right: \"end\"\n            }, cue.align);\n        }\n        function skipWhitespace() {\n            input = input.replace(/^\\s+/, \"\");\n        }\n\n        // 4.1 WebVTT cue timings.\n        skipWhitespace();\n        cue.startTime = consumeTimeStamp(); // (1) collect cue start time\n        skipWhitespace();\n        if (input.substr(0, 3) !== \"-->\") {\n            // (3) next characters must match \"-->\"\n            throw new ParsingError(ParsingError.Errors.BadTimeStamp, \"Malformed time stamp (time stamps must be separated by '-->'): \" + oInput);\n        }\n        input = input.substr(3);\n        skipWhitespace();\n        cue.endTime = consumeTimeStamp(); // (5) collect cue end time\n\n        // 4.1 WebVTT cue settings list.\n        skipWhitespace();\n        consumeCueSettings(input, cue);\n    }\n\n    // When evaluating this file as part of a Webpack bundle for server\n    // side rendering, `document` is an empty object.\n    var TEXTAREA_ELEMENT = document_1.createElement && document_1.createElement(\"textarea\");\n    var TAG_NAME = {\n        c: \"span\",\n        i: \"i\",\n        b: \"b\",\n        u: \"u\",\n        ruby: \"ruby\",\n        rt: \"rt\",\n        v: \"span\",\n        lang: \"span\"\n    };\n\n    // 5.1 default text color\n    // 5.2 default text background color is equivalent to text color with bg_ prefix\n    var DEFAULT_COLOR_CLASS = {\n        white: 'rgba(255,255,255,1)',\n        lime: 'rgba(0,255,0,1)',\n        cyan: 'rgba(0,255,255,1)',\n        red: 'rgba(255,0,0,1)',\n        yellow: 'rgba(255,255,0,1)',\n        magenta: 'rgba(255,0,255,1)',\n        blue: 'rgba(0,0,255,1)',\n        black: 'rgba(0,0,0,1)'\n    };\n    var TAG_ANNOTATION = {\n        v: \"title\",\n        lang: \"lang\"\n    };\n    var NEEDS_PARENT = {\n        rt: \"ruby\"\n    };\n\n    // Parse content into a document fragment.\n    function parseContent(window, input) {\n        function nextToken() {\n            // Check for end-of-string.\n            if (!input) {\n                return null;\n            }\n\n            // Consume 'n' characters from the input.\n            function consume(result) {\n                input = input.substr(result.length);\n                return result;\n            }\n            var m = input.match(/^([^<]*)(<[^>]*>?)?/);\n            // If there is some text before the next tag, return it, otherwise return\n            // the tag.\n            return consume(m[1] ? m[1] : m[2]);\n        }\n        function unescape(s) {\n            TEXTAREA_ELEMENT.innerHTML = s;\n            s = TEXTAREA_ELEMENT.textContent;\n            TEXTAREA_ELEMENT.textContent = \"\";\n            return s;\n        }\n        function shouldAdd(current, element) {\n            return !NEEDS_PARENT[element.localName] || NEEDS_PARENT[element.localName] === current.localName;\n        }\n\n        // Create an element for this tag.\n        function createElement(type, annotation) {\n            var tagName = TAG_NAME[type];\n            if (!tagName) {\n                return null;\n            }\n            var element = window.document.createElement(tagName);\n            var name = TAG_ANNOTATION[type];\n            if (name && annotation) {\n                element[name] = annotation.trim();\n            }\n            return element;\n        }\n        var rootDiv = window.document.createElement(\"div\"),\n            current = rootDiv,\n            t,\n            tagStack = [];\n        while ((t = nextToken()) !== null) {\n            if (t[0] === '<') {\n                if (t[1] === \"/\") {\n                    // If the closing tag matches, move back up to the parent node.\n                    if (tagStack.length && tagStack[tagStack.length - 1] === t.substr(2).replace(\">\", \"\")) {\n                        tagStack.pop();\n                        current = current.parentNode;\n                    }\n                    // Otherwise just ignore the end tag.\n                    continue;\n                }\n                var ts = parseTimeStamp(t.substr(1, t.length - 2));\n                var node;\n                if (ts) {\n                    // Timestamps are lead nodes as well.\n                    node = window.document.createProcessingInstruction(\"timestamp\", ts);\n                    current.appendChild(node);\n                    continue;\n                }\n                var m = t.match(/^<([^.\\s/0-9>]+)(\\.[^\\s\\\\>]+)?([^>\\\\]+)?(\\\\?)>?$/);\n                // If we can't parse the tag, skip to the next tag.\n                if (!m) {\n                    continue;\n                }\n                // Try to construct an element, and ignore the tag if we couldn't.\n                node = createElement(m[1], m[3]);\n                if (!node) {\n                    continue;\n                }\n                // Determine if the tag should be added based on the context of where it\n                // is placed in the cuetext.\n                if (!shouldAdd(current, node)) {\n                    continue;\n                }\n                // Set the class list (as a list of classes, separated by space).\n                if (m[2]) {\n                    var classes = m[2].split('.');\n                    classes.forEach(function (cl) {\n                        var bgColor = /^bg_/.test(cl);\n                        // slice out `bg_` if it's a background color\n                        var colorName = bgColor ? cl.slice(3) : cl;\n                        if (DEFAULT_COLOR_CLASS.hasOwnProperty(colorName)) {\n                            var propName = bgColor ? 'background-color' : 'color';\n                            var propValue = DEFAULT_COLOR_CLASS[colorName];\n                            node.style[propName] = propValue;\n                        }\n                    });\n                    node.className = classes.join(' ');\n                }\n                // Append the node to the current node, and enter the scope of the new\n                // node.\n                tagStack.push(m[1]);\n                current.appendChild(node);\n                current = node;\n                continue;\n            }\n\n            // Text nodes are leaf nodes.\n            current.appendChild(window.document.createTextNode(unescape(t)));\n        }\n        return rootDiv;\n    }\n\n    // This is a list of all the Unicode characters that have a strong\n    // right-to-left category. What this means is that these characters are\n    // written right-to-left for sure. It was generated by pulling all the strong\n    // right-to-left characters out of the Unicode data table. That table can\n    // found at: http://www.unicode.org/Public/UNIDATA/UnicodeData.txt\n    var strongRTLRanges = [[0x5be, 0x5be], [0x5c0, 0x5c0], [0x5c3, 0x5c3], [0x5c6, 0x5c6], [0x5d0, 0x5ea], [0x5f0, 0x5f4], [0x608, 0x608], [0x60b, 0x60b], [0x60d, 0x60d], [0x61b, 0x61b], [0x61e, 0x64a], [0x66d, 0x66f], [0x671, 0x6d5], [0x6e5, 0x6e6], [0x6ee, 0x6ef], [0x6fa, 0x70d], [0x70f, 0x710], [0x712, 0x72f], [0x74d, 0x7a5], [0x7b1, 0x7b1], [0x7c0, 0x7ea], [0x7f4, 0x7f5], [0x7fa, 0x7fa], [0x800, 0x815], [0x81a, 0x81a], [0x824, 0x824], [0x828, 0x828], [0x830, 0x83e], [0x840, 0x858], [0x85e, 0x85e], [0x8a0, 0x8a0], [0x8a2, 0x8ac], [0x200f, 0x200f], [0xfb1d, 0xfb1d], [0xfb1f, 0xfb28], [0xfb2a, 0xfb36], [0xfb38, 0xfb3c], [0xfb3e, 0xfb3e], [0xfb40, 0xfb41], [0xfb43, 0xfb44], [0xfb46, 0xfbc1], [0xfbd3, 0xfd3d], [0xfd50, 0xfd8f], [0xfd92, 0xfdc7], [0xfdf0, 0xfdfc], [0xfe70, 0xfe74], [0xfe76, 0xfefc], [0x10800, 0x10805], [0x10808, 0x10808], [0x1080a, 0x10835], [0x10837, 0x10838], [0x1083c, 0x1083c], [0x1083f, 0x10855], [0x10857, 0x1085f], [0x10900, 0x1091b], [0x10920, 0x10939], [0x1093f, 0x1093f], [0x10980, 0x109b7], [0x109be, 0x109bf], [0x10a00, 0x10a00], [0x10a10, 0x10a13], [0x10a15, 0x10a17], [0x10a19, 0x10a33], [0x10a40, 0x10a47], [0x10a50, 0x10a58], [0x10a60, 0x10a7f], [0x10b00, 0x10b35], [0x10b40, 0x10b55], [0x10b58, 0x10b72], [0x10b78, 0x10b7f], [0x10c00, 0x10c48], [0x1ee00, 0x1ee03], [0x1ee05, 0x1ee1f], [0x1ee21, 0x1ee22], [0x1ee24, 0x1ee24], [0x1ee27, 0x1ee27], [0x1ee29, 0x1ee32], [0x1ee34, 0x1ee37], [0x1ee39, 0x1ee39], [0x1ee3b, 0x1ee3b], [0x1ee42, 0x1ee42], [0x1ee47, 0x1ee47], [0x1ee49, 0x1ee49], [0x1ee4b, 0x1ee4b], [0x1ee4d, 0x1ee4f], [0x1ee51, 0x1ee52], [0x1ee54, 0x1ee54], [0x1ee57, 0x1ee57], [0x1ee59, 0x1ee59], [0x1ee5b, 0x1ee5b], [0x1ee5d, 0x1ee5d], [0x1ee5f, 0x1ee5f], [0x1ee61, 0x1ee62], [0x1ee64, 0x1ee64], [0x1ee67, 0x1ee6a], [0x1ee6c, 0x1ee72], [0x1ee74, 0x1ee77], [0x1ee79, 0x1ee7c], [0x1ee7e, 0x1ee7e], [0x1ee80, 0x1ee89], [0x1ee8b, 0x1ee9b], [0x1eea1, 0x1eea3], [0x1eea5, 0x1eea9], [0x1eeab, 0x1eebb], [0x10fffd, 0x10fffd]];\n    function isStrongRTLChar(charCode) {\n        for (var i = 0; i < strongRTLRanges.length; i++) {\n            var currentRange = strongRTLRanges[i];\n            if (charCode >= currentRange[0] && charCode <= currentRange[1]) {\n                return true;\n            }\n        }\n        return false;\n    }\n    function determineBidi(cueDiv) {\n        var nodeStack = [],\n            text = \"\",\n            charCode;\n        if (!cueDiv || !cueDiv.childNodes) {\n            return \"ltr\";\n        }\n        function pushNodes(nodeStack, node) {\n            for (var i = node.childNodes.length - 1; i >= 0; i--) {\n                nodeStack.push(node.childNodes[i]);\n            }\n        }\n        function nextTextNode(nodeStack) {\n            if (!nodeStack || !nodeStack.length) {\n                return null;\n            }\n            var node = nodeStack.pop(),\n                text = node.textContent || node.innerText;\n            if (text) {\n                // TODO: This should match all unicode type B characters (paragraph\n                // separator characters). See issue #115.\n                var m = text.match(/^.*(\\n|\\r)/);\n                if (m) {\n                    nodeStack.length = 0;\n                    return m[0];\n                }\n                return text;\n            }\n            if (node.tagName === \"ruby\") {\n                return nextTextNode(nodeStack);\n            }\n            if (node.childNodes) {\n                pushNodes(nodeStack, node);\n                return nextTextNode(nodeStack);\n            }\n        }\n        pushNodes(nodeStack, cueDiv);\n        while (text = nextTextNode(nodeStack)) {\n            for (var i = 0; i < text.length; i++) {\n                charCode = text.charCodeAt(i);\n                if (isStrongRTLChar(charCode)) {\n                    return \"rtl\";\n                }\n            }\n        }\n        return \"ltr\";\n    }\n    function computeLinePos(cue) {\n        if (typeof cue.line === \"number\" && (cue.snapToLines || cue.line >= 0 && cue.line <= 100)) {\n            return cue.line;\n        }\n        if (!cue.track || !cue.track.textTrackList || !cue.track.textTrackList.mediaElement) {\n            return -1;\n        }\n        var track = cue.track,\n            trackList = track.textTrackList,\n            count = 0;\n        for (var i = 0; i < trackList.length && trackList[i] !== track; i++) {\n            if (trackList[i].mode === \"showing\") {\n                count++;\n            }\n        }\n        return ++count * -1;\n    }\n    function StyleBox() {}\n\n    // Apply styles to a div. If there is no div passed then it defaults to the\n    // div on 'this'.\n    StyleBox.prototype.applyStyles = function (styles, div) {\n        div = div || this.div;\n        for (var prop in styles) {\n            if (styles.hasOwnProperty(prop)) {\n                div.style[prop] = styles[prop];\n            }\n        }\n    };\n    StyleBox.prototype.formatStyle = function (val, unit) {\n        return val === 0 ? 0 : val + unit;\n    };\n\n    // Constructs the computed display state of the cue (a div). Places the div\n    // into the overlay which should be a block level element (usually a div).\n    function CueStyleBox(window, cue, styleOptions) {\n        StyleBox.call(this);\n        this.cue = cue;\n\n        // Parse our cue's text into a DOM tree rooted at 'cueDiv'. This div will\n        // have inline positioning and will function as the cue background box.\n        this.cueDiv = parseContent(window, cue.text);\n        var styles = {\n            color: \"rgba(255, 255, 255, 1)\",\n            backgroundColor: \"rgba(0, 0, 0, 0.8)\",\n            position: \"relative\",\n            left: 0,\n            right: 0,\n            top: 0,\n            bottom: 0,\n            display: \"inline\",\n            writingMode: cue.vertical === \"\" ? \"horizontal-tb\" : cue.vertical === \"lr\" ? \"vertical-lr\" : \"vertical-rl\",\n            unicodeBidi: \"plaintext\"\n        };\n        this.applyStyles(styles, this.cueDiv);\n\n        // Create an absolutely positioned div that will be used to position the cue\n        // div. Note, all WebVTT cue-setting alignments are equivalent to the CSS\n        // mirrors of them except middle instead of center on Safari.\n        this.div = window.document.createElement(\"div\");\n        styles = {\n            direction: determineBidi(this.cueDiv),\n            writingMode: cue.vertical === \"\" ? \"horizontal-tb\" : cue.vertical === \"lr\" ? \"vertical-lr\" : \"vertical-rl\",\n            unicodeBidi: \"plaintext\",\n            textAlign: cue.align === \"middle\" ? \"center\" : cue.align,\n            font: styleOptions.font,\n            whiteSpace: \"pre-line\",\n            position: \"absolute\"\n        };\n        this.applyStyles(styles);\n        this.div.appendChild(this.cueDiv);\n\n        // Calculate the distance from the reference edge of the viewport to the text\n        // position of the cue box. The reference edge will be resolved later when\n        // the box orientation styles are applied.\n        var textPos = 0;\n        switch (cue.positionAlign) {\n            case \"start\":\n            case \"line-left\":\n                textPos = cue.position;\n                break;\n            case \"center\":\n                textPos = cue.position - cue.size / 2;\n                break;\n            case \"end\":\n            case \"line-right\":\n                textPos = cue.position - cue.size;\n                break;\n        }\n\n        // Horizontal box orientation; textPos is the distance from the left edge of the\n        // area to the left edge of the box and cue.size is the distance extending to\n        // the right from there.\n        if (cue.vertical === \"\") {\n            this.applyStyles({\n                left: this.formatStyle(textPos, \"%\"),\n                width: this.formatStyle(cue.size, \"%\")\n            });\n            // Vertical box orientation; textPos is the distance from the top edge of the\n            // area to the top edge of the box and cue.size is the height extending\n            // downwards from there.\n        } else {\n            this.applyStyles({\n                top: this.formatStyle(textPos, \"%\"),\n                height: this.formatStyle(cue.size, \"%\")\n            });\n        }\n        this.move = function (box) {\n            this.applyStyles({\n                top: this.formatStyle(box.top, \"px\"),\n                bottom: this.formatStyle(box.bottom, \"px\"),\n                left: this.formatStyle(box.left, \"px\"),\n                right: this.formatStyle(box.right, \"px\"),\n                height: this.formatStyle(box.height, \"px\"),\n                width: this.formatStyle(box.width, \"px\")\n            });\n        };\n    }\n    CueStyleBox.prototype = _objCreate(StyleBox.prototype);\n    CueStyleBox.prototype.constructor = CueStyleBox;\n\n    // Represents the co-ordinates of an Element in a way that we can easily\n    // compute things with such as if it overlaps or intersects with another Element.\n    // Can initialize it with either a StyleBox or another BoxPosition.\n    function BoxPosition(obj) {\n        // Either a BoxPosition was passed in and we need to copy it, or a StyleBox\n        // was passed in and we need to copy the results of 'getBoundingClientRect'\n        // as the object returned is readonly. All co-ordinate values are in reference\n        // to the viewport origin (top left).\n        var lh, height, width, top;\n        if (obj.div) {\n            height = obj.div.offsetHeight;\n            width = obj.div.offsetWidth;\n            top = obj.div.offsetTop;\n            var rects = (rects = obj.div.childNodes) && (rects = rects[0]) && rects.getClientRects && rects.getClientRects();\n            obj = obj.div.getBoundingClientRect();\n            // In certain cases the outter div will be slightly larger then the sum of\n            // the inner div's lines. This could be due to bold text, etc, on some platforms.\n            // In this case we should get the average line height and use that. This will\n            // result in the desired behaviour.\n            lh = rects ? Math.max(rects[0] && rects[0].height || 0, obj.height / rects.length) : 0;\n        }\n        this.left = obj.left;\n        this.right = obj.right;\n        this.top = obj.top || top;\n        this.height = obj.height || height;\n        this.bottom = obj.bottom || top + (obj.height || height);\n        this.width = obj.width || width;\n        this.lineHeight = lh !== undefined ? lh : obj.lineHeight;\n    }\n\n    // Move the box along a particular axis. Optionally pass in an amount to move\n    // the box. If no amount is passed then the default is the line height of the\n    // box.\n    BoxPosition.prototype.move = function (axis, toMove) {\n        toMove = toMove !== undefined ? toMove : this.lineHeight;\n        switch (axis) {\n            case \"+x\":\n                this.left += toMove;\n                this.right += toMove;\n                break;\n            case \"-x\":\n                this.left -= toMove;\n                this.right -= toMove;\n                break;\n            case \"+y\":\n                this.top += toMove;\n                this.bottom += toMove;\n                break;\n            case \"-y\":\n                this.top -= toMove;\n                this.bottom -= toMove;\n                break;\n        }\n    };\n\n    // Check if this box overlaps another box, b2.\n    BoxPosition.prototype.overlaps = function (b2) {\n        return this.left < b2.right && this.right > b2.left && this.top < b2.bottom && this.bottom > b2.top;\n    };\n\n    // Check if this box overlaps any other boxes in boxes.\n    BoxPosition.prototype.overlapsAny = function (boxes) {\n        for (var i = 0; i < boxes.length; i++) {\n            if (this.overlaps(boxes[i])) {\n                return true;\n            }\n        }\n        return false;\n    };\n\n    // Check if this box is within another box.\n    BoxPosition.prototype.within = function (container) {\n        return this.top >= container.top && this.bottom <= container.bottom && this.left >= container.left && this.right <= container.right;\n    };\n\n    // Check if this box is entirely within the container or it is overlapping\n    // on the edge opposite of the axis direction passed. For example, if \"+x\" is\n    // passed and the box is overlapping on the left edge of the container, then\n    // return true.\n    BoxPosition.prototype.overlapsOppositeAxis = function (container, axis) {\n        switch (axis) {\n            case \"+x\":\n                return this.left < container.left;\n            case \"-x\":\n                return this.right > container.right;\n            case \"+y\":\n                return this.top < container.top;\n            case \"-y\":\n                return this.bottom > container.bottom;\n        }\n    };\n\n    // Find the percentage of the area that this box is overlapping with another\n    // box.\n    BoxPosition.prototype.intersectPercentage = function (b2) {\n        var x = Math.max(0, Math.min(this.right, b2.right) - Math.max(this.left, b2.left)),\n            y = Math.max(0, Math.min(this.bottom, b2.bottom) - Math.max(this.top, b2.top)),\n            intersectArea = x * y;\n        return intersectArea / (this.height * this.width);\n    };\n\n    // Convert the positions from this box to CSS compatible positions using\n    // the reference container's positions. This has to be done because this\n    // box's positions are in reference to the viewport origin, whereas, CSS\n    // values are in referecne to their respective edges.\n    BoxPosition.prototype.toCSSCompatValues = function (reference) {\n        return {\n            top: this.top - reference.top,\n            bottom: reference.bottom - this.bottom,\n            left: this.left - reference.left,\n            right: reference.right - this.right,\n            height: this.height,\n            width: this.width\n        };\n    };\n\n    // Get an object that represents the box's position without anything extra.\n    // Can pass a StyleBox, HTMLElement, or another BoxPositon.\n    BoxPosition.getSimpleBoxPosition = function (obj) {\n        var height = obj.div ? obj.div.offsetHeight : obj.tagName ? obj.offsetHeight : 0;\n        var width = obj.div ? obj.div.offsetWidth : obj.tagName ? obj.offsetWidth : 0;\n        var top = obj.div ? obj.div.offsetTop : obj.tagName ? obj.offsetTop : 0;\n        obj = obj.div ? obj.div.getBoundingClientRect() : obj.tagName ? obj.getBoundingClientRect() : obj;\n        var ret = {\n            left: obj.left,\n            right: obj.right,\n            top: obj.top || top,\n            height: obj.height || height,\n            bottom: obj.bottom || top + (obj.height || height),\n            width: obj.width || width\n        };\n        return ret;\n    };\n\n    // Move a StyleBox to its specified, or next best, position. The containerBox\n    // is the box that contains the StyleBox, such as a div. boxPositions are\n    // a list of other boxes that the styleBox can't overlap with.\n    function moveBoxToLinePosition(window, styleBox, containerBox, boxPositions) {\n        // Find the best position for a cue box, b, on the video. The axis parameter\n        // is a list of axis, the order of which, it will move the box along. For example:\n        // Passing [\"+x\", \"-x\"] will move the box first along the x axis in the positive\n        // direction. If it doesn't find a good position for it there it will then move\n        // it along the x axis in the negative direction.\n        function findBestPosition(b, axis) {\n            var bestPosition,\n                specifiedPosition = new BoxPosition(b),\n                percentage = 1; // Highest possible so the first thing we get is better.\n\n            for (var i = 0; i < axis.length; i++) {\n                while (b.overlapsOppositeAxis(containerBox, axis[i]) || b.within(containerBox) && b.overlapsAny(boxPositions)) {\n                    b.move(axis[i]);\n                }\n                // We found a spot where we aren't overlapping anything. This is our\n                // best position.\n                if (b.within(containerBox)) {\n                    return b;\n                }\n                var p = b.intersectPercentage(containerBox);\n                // If we're outside the container box less then we were on our last try\n                // then remember this position as the best position.\n                if (percentage > p) {\n                    bestPosition = new BoxPosition(b);\n                    percentage = p;\n                }\n                // Reset the box position to the specified position.\n                b = new BoxPosition(specifiedPosition);\n            }\n            return bestPosition || specifiedPosition;\n        }\n        var boxPosition = new BoxPosition(styleBox),\n            cue = styleBox.cue,\n            linePos = computeLinePos(cue),\n            axis = [];\n\n        // If we have a line number to align the cue to.\n        if (cue.snapToLines) {\n            var size;\n            switch (cue.vertical) {\n                case \"\":\n                    axis = [\"+y\", \"-y\"];\n                    size = \"height\";\n                    break;\n                case \"rl\":\n                    axis = [\"+x\", \"-x\"];\n                    size = \"width\";\n                    break;\n                case \"lr\":\n                    axis = [\"-x\", \"+x\"];\n                    size = \"width\";\n                    break;\n            }\n            var step = boxPosition.lineHeight,\n                position = step * Math.round(linePos),\n                maxPosition = containerBox[size] + step,\n                initialAxis = axis[0];\n\n            // If the specified intial position is greater then the max position then\n            // clamp the box to the amount of steps it would take for the box to\n            // reach the max position.\n            if (Math.abs(position) > maxPosition) {\n                position = position < 0 ? -1 : 1;\n                position *= Math.ceil(maxPosition / step) * step;\n            }\n\n            // If computed line position returns negative then line numbers are\n            // relative to the bottom of the video instead of the top. Therefore, we\n            // need to increase our initial position by the length or width of the\n            // video, depending on the writing direction, and reverse our axis directions.\n            if (linePos < 0) {\n                position += cue.vertical === \"\" ? containerBox.height : containerBox.width;\n                axis = axis.reverse();\n            }\n\n            // Move the box to the specified position. This may not be its best\n            // position.\n            boxPosition.move(initialAxis, position);\n        } else {\n            // If we have a percentage line value for the cue.\n            var calculatedPercentage = boxPosition.lineHeight / containerBox.height * 100;\n            switch (cue.lineAlign) {\n                case \"center\":\n                    linePos -= calculatedPercentage / 2;\n                    break;\n                case \"end\":\n                    linePos -= calculatedPercentage;\n                    break;\n            }\n\n            // Apply initial line position to the cue box.\n            switch (cue.vertical) {\n                case \"\":\n                    styleBox.applyStyles({\n                        top: styleBox.formatStyle(linePos, \"%\")\n                    });\n                    break;\n                case \"rl\":\n                    styleBox.applyStyles({\n                        left: styleBox.formatStyle(linePos, \"%\")\n                    });\n                    break;\n                case \"lr\":\n                    styleBox.applyStyles({\n                        right: styleBox.formatStyle(linePos, \"%\")\n                    });\n                    break;\n            }\n            axis = [\"+y\", \"-x\", \"+x\", \"-y\"];\n\n            // Get the box position again after we've applied the specified positioning\n            // to it.\n            boxPosition = new BoxPosition(styleBox);\n        }\n        var bestPosition = findBestPosition(boxPosition, axis);\n        styleBox.move(bestPosition.toCSSCompatValues(containerBox));\n    }\n    function WebVTT$1() {\n        // Nothing\n    }\n\n    // Helper to allow strings to be decoded instead of the default binary utf8 data.\n    WebVTT$1.StringDecoder = function () {\n        return {\n            decode: function (data) {\n                if (!data) {\n                    return \"\";\n                }\n                if (typeof data !== \"string\") {\n                    throw new Error(\"Error - expected string data.\");\n                }\n                return decodeURIComponent(encodeURIComponent(data));\n            }\n        };\n    };\n    WebVTT$1.convertCueToDOMTree = function (window, cuetext) {\n        if (!window || !cuetext) {\n            return null;\n        }\n        return parseContent(window, cuetext);\n    };\n    var FONT_SIZE_PERCENT = 0.05;\n    var FONT_STYLE = \"sans-serif\";\n    var CUE_BACKGROUND_PADDING = \"1.5%\";\n\n    // Runs the processing model over the cues and regions passed to it.\n    // @param overlay A block level element (usually a div) that the computed cues\n    //                and regions will be placed into.\n    WebVTT$1.processCues = function (window, cues, overlay) {\n        if (!window || !cues || !overlay) {\n            return null;\n        }\n\n        // Remove all previous children.\n        while (overlay.firstChild) {\n            overlay.removeChild(overlay.firstChild);\n        }\n        var paddedOverlay = window.document.createElement(\"div\");\n        paddedOverlay.style.position = \"absolute\";\n        paddedOverlay.style.left = \"0\";\n        paddedOverlay.style.right = \"0\";\n        paddedOverlay.style.top = \"0\";\n        paddedOverlay.style.bottom = \"0\";\n        paddedOverlay.style.margin = CUE_BACKGROUND_PADDING;\n        overlay.appendChild(paddedOverlay);\n\n        // Determine if we need to compute the display states of the cues. This could\n        // be the case if a cue's state has been changed since the last computation or\n        // if it has not been computed yet.\n        function shouldCompute(cues) {\n            for (var i = 0; i < cues.length; i++) {\n                if (cues[i].hasBeenReset || !cues[i].displayState) {\n                    return true;\n                }\n            }\n            return false;\n        }\n\n        // We don't need to recompute the cues' display states. Just reuse them.\n        if (!shouldCompute(cues)) {\n            for (var i = 0; i < cues.length; i++) {\n                paddedOverlay.appendChild(cues[i].displayState);\n            }\n            return;\n        }\n        var boxPositions = [],\n            containerBox = BoxPosition.getSimpleBoxPosition(paddedOverlay),\n            fontSize = Math.round(containerBox.height * FONT_SIZE_PERCENT * 100) / 100;\n        var styleOptions = {\n            font: fontSize + \"px \" + FONT_STYLE\n        };\n        (function () {\n            var styleBox, cue;\n            for (var i = 0; i < cues.length; i++) {\n                cue = cues[i];\n\n                // Compute the intial position and styles of the cue div.\n                styleBox = new CueStyleBox(window, cue, styleOptions);\n                paddedOverlay.appendChild(styleBox.div);\n\n                // Move the cue div to it's correct line position.\n                moveBoxToLinePosition(window, styleBox, containerBox, boxPositions);\n\n                // Remember the computed div so that we don't have to recompute it later\n                // if we don't have too.\n                cue.displayState = styleBox.div;\n                boxPositions.push(BoxPosition.getSimpleBoxPosition(styleBox));\n            }\n        })();\n    };\n    WebVTT$1.Parser = function (window, vttjs, decoder) {\n        if (!decoder) {\n            decoder = vttjs;\n            vttjs = {};\n        }\n        if (!vttjs) {\n            vttjs = {};\n        }\n        this.window = window;\n        this.vttjs = vttjs;\n        this.state = \"INITIAL\";\n        this.buffer = \"\";\n        this.decoder = decoder || new TextDecoder(\"utf8\");\n        this.regionList = [];\n    };\n    WebVTT$1.Parser.prototype = {\n        // If the error is a ParsingError then report it to the consumer if\n        // possible. If it's not a ParsingError then throw it like normal.\n        reportOrThrowError: function (e) {\n            if (e instanceof ParsingError) {\n                this.onparsingerror && this.onparsingerror(e);\n            } else {\n                throw e;\n            }\n        },\n        parse: function (data) {\n            var self = this;\n\n            // If there is no data then we won't decode it, but will just try to parse\n            // whatever is in buffer already. This may occur in circumstances, for\n            // example when flush() is called.\n            if (data) {\n                // Try to decode the data that we received.\n                self.buffer += self.decoder.decode(data, {\n                    stream: true\n                });\n            }\n            function collectNextLine() {\n                var buffer = self.buffer;\n                var pos = 0;\n                while (pos < buffer.length && buffer[pos] !== '\\r' && buffer[pos] !== '\\n') {\n                    ++pos;\n                }\n                var line = buffer.substr(0, pos);\n                // Advance the buffer early in case we fail below.\n                if (buffer[pos] === '\\r') {\n                    ++pos;\n                }\n                if (buffer[pos] === '\\n') {\n                    ++pos;\n                }\n                self.buffer = buffer.substr(pos);\n                return line;\n            }\n\n            // 3.4 WebVTT region and WebVTT region settings syntax\n            function parseRegion(input) {\n                var settings = new Settings();\n                parseOptions(input, function (k, v) {\n                    switch (k) {\n                        case \"id\":\n                            settings.set(k, v);\n                            break;\n                        case \"width\":\n                            settings.percent(k, v);\n                            break;\n                        case \"lines\":\n                            settings.integer(k, v);\n                            break;\n                        case \"regionanchor\":\n                        case \"viewportanchor\":\n                            var xy = v.split(',');\n                            if (xy.length !== 2) {\n                                break;\n                            }\n                            // We have to make sure both x and y parse, so use a temporary\n                            // settings object here.\n                            var anchor = new Settings();\n                            anchor.percent(\"x\", xy[0]);\n                            anchor.percent(\"y\", xy[1]);\n                            if (!anchor.has(\"x\") || !anchor.has(\"y\")) {\n                                break;\n                            }\n                            settings.set(k + \"X\", anchor.get(\"x\"));\n                            settings.set(k + \"Y\", anchor.get(\"y\"));\n                            break;\n                        case \"scroll\":\n                            settings.alt(k, v, [\"up\"]);\n                            break;\n                    }\n                }, /=/, /\\s/);\n\n                // Create the region, using default values for any values that were not\n                // specified.\n                if (settings.has(\"id\")) {\n                    var region = new (self.vttjs.VTTRegion || self.window.VTTRegion)();\n                    region.width = settings.get(\"width\", 100);\n                    region.lines = settings.get(\"lines\", 3);\n                    region.regionAnchorX = settings.get(\"regionanchorX\", 0);\n                    region.regionAnchorY = settings.get(\"regionanchorY\", 100);\n                    region.viewportAnchorX = settings.get(\"viewportanchorX\", 0);\n                    region.viewportAnchorY = settings.get(\"viewportanchorY\", 100);\n                    region.scroll = settings.get(\"scroll\", \"\");\n                    // Register the region.\n                    self.onregion && self.onregion(region);\n                    // Remember the VTTRegion for later in case we parse any VTTCues that\n                    // reference it.\n                    self.regionList.push({\n                        id: settings.get(\"id\"),\n                        region: region\n                    });\n                }\n            }\n\n            // draft-pantos-http-live-streaming-20\n            // https://tools.ietf.org/html/draft-pantos-http-live-streaming-20#section-3.5\n            // 3.5 WebVTT\n            function parseTimestampMap(input) {\n                var settings = new Settings();\n                parseOptions(input, function (k, v) {\n                    switch (k) {\n                        case \"MPEGT\":\n                            settings.integer(k + 'S', v);\n                            break;\n                        case \"LOCA\":\n                            settings.set(k + 'L', parseTimeStamp(v));\n                            break;\n                    }\n                }, /[^\\d]:/, /,/);\n                self.ontimestampmap && self.ontimestampmap({\n                    \"MPEGTS\": settings.get(\"MPEGTS\"),\n                    \"LOCAL\": settings.get(\"LOCAL\")\n                });\n            }\n\n            // 3.2 WebVTT metadata header syntax\n            function parseHeader(input) {\n                if (input.match(/X-TIMESTAMP-MAP/)) {\n                    // This line contains HLS X-TIMESTAMP-MAP metadata\n                    parseOptions(input, function (k, v) {\n                        switch (k) {\n                            case \"X-TIMESTAMP-MAP\":\n                                parseTimestampMap(v);\n                                break;\n                        }\n                    }, /=/);\n                } else {\n                    parseOptions(input, function (k, v) {\n                        switch (k) {\n                            case \"Region\":\n                                // 3.3 WebVTT region metadata header syntax\n                                parseRegion(v);\n                                break;\n                        }\n                    }, /:/);\n                }\n            }\n\n            // 5.1 WebVTT file parsing.\n            try {\n                var line;\n                if (self.state === \"INITIAL\") {\n                    // We can't start parsing until we have the first line.\n                    if (!/\\r\\n|\\n/.test(self.buffer)) {\n                        return this;\n                    }\n                    line = collectNextLine();\n                    var m = line.match(/^WEBVTT([ \\t].*)?$/);\n                    if (!m || !m[0]) {\n                        throw new ParsingError(ParsingError.Errors.BadSignature);\n                    }\n                    self.state = \"HEADER\";\n                }\n                var alreadyCollectedLine = false;\n                while (self.buffer) {\n                    // We can't parse a line until we have the full line.\n                    if (!/\\r\\n|\\n/.test(self.buffer)) {\n                        return this;\n                    }\n                    if (!alreadyCollectedLine) {\n                        line = collectNextLine();\n                    } else {\n                        alreadyCollectedLine = false;\n                    }\n                    switch (self.state) {\n                        case \"HEADER\":\n                            // 13-18 - Allow a header (metadata) under the WEBVTT line.\n                            if (/:/.test(line)) {\n                                parseHeader(line);\n                            } else if (!line) {\n                                // An empty line terminates the header and starts the body (cues).\n                                self.state = \"ID\";\n                            }\n                            continue;\n                        case \"NOTE\":\n                            // Ignore NOTE blocks.\n                            if (!line) {\n                                self.state = \"ID\";\n                            }\n                            continue;\n                        case \"ID\":\n                            // Check for the start of NOTE blocks.\n                            if (/^NOTE($|[ \\t])/.test(line)) {\n                                self.state = \"NOTE\";\n                                break;\n                            }\n                            // 19-29 - Allow any number of line terminators, then initialize new cue values.\n                            if (!line) {\n                                continue;\n                            }\n                            self.cue = new (self.vttjs.VTTCue || self.window.VTTCue)(0, 0, \"\");\n                            // Safari still uses the old middle value and won't accept center\n                            try {\n                                self.cue.align = \"center\";\n                            } catch (e) {\n                                self.cue.align = \"middle\";\n                            }\n                            self.state = \"CUE\";\n                            // 30-39 - Check if self line contains an optional identifier or timing data.\n                            if (line.indexOf(\"-->\") === -1) {\n                                self.cue.id = line;\n                                continue;\n                            }\n                        // Process line as start of a cue.\n                        /*falls through*/\n                        case \"CUE\":\n                            // 40 - Collect cue timings and settings.\n                            try {\n                                parseCue(line, self.cue, self.regionList);\n                            } catch (e) {\n                                self.reportOrThrowError(e);\n                                // In case of an error ignore rest of the cue.\n                                self.cue = null;\n                                self.state = \"BADCUE\";\n                                continue;\n                            }\n                            self.state = \"CUETEXT\";\n                            continue;\n                        case \"CUETEXT\":\n                            var hasSubstring = line.indexOf(\"-->\") !== -1;\n                            // 34 - If we have an empty line then report the cue.\n                            // 35 - If we have the special substring '-->' then report the cue,\n                            // but do not collect the line as we need to process the current\n                            // one as a new cue.\n                            if (!line || hasSubstring && (alreadyCollectedLine = true)) {\n                                // We are done parsing self cue.\n                                self.oncue && self.oncue(self.cue);\n                                self.cue = null;\n                                self.state = \"ID\";\n                                continue;\n                            }\n                            if (self.cue.text) {\n                                self.cue.text += \"\\n\";\n                            }\n                            self.cue.text += line.replace(/\\u2028/g, '\\n').replace(/u2029/g, '\\n');\n                            continue;\n                        case \"BADCUE\":\n                            // BADCUE\n                            // 54-62 - Collect and discard the remaining cue.\n                            if (!line) {\n                                self.state = \"ID\";\n                            }\n                            continue;\n                    }\n                }\n            } catch (e) {\n                self.reportOrThrowError(e);\n\n                // If we are currently parsing a cue, report what we have.\n                if (self.state === \"CUETEXT\" && self.cue && self.oncue) {\n                    self.oncue(self.cue);\n                }\n                self.cue = null;\n                // Enter BADWEBVTT state if header was not parsed correctly otherwise\n                // another exception occurred so enter BADCUE state.\n                self.state = self.state === \"INITIAL\" ? \"BADWEBVTT\" : \"BADCUE\";\n            }\n            return this;\n        },\n        flush: function () {\n            var self = this;\n            try {\n                // Finish decoding the stream.\n                self.buffer += self.decoder.decode();\n                // Synthesize the end of the current cue or region.\n                if (self.cue || self.state === \"HEADER\") {\n                    self.buffer += \"\\n\\n\";\n                    self.parse();\n                }\n                // If we've flushed, parsed, and we're still on the INITIAL state then\n                // that means we don't have enough of the stream to parse the first\n                // line.\n                if (self.state === \"INITIAL\") {\n                    throw new ParsingError(ParsingError.Errors.BadSignature);\n                }\n            } catch (e) {\n                self.reportOrThrowError(e);\n            }\n            self.onflush && self.onflush();\n            return this;\n        }\n    };\n    var vtt = WebVTT$1;\n\n    /**\n     * Copyright 2013 vtt.js Contributors\n     *\n     * Licensed under the Apache License, Version 2.0 (the \"License\");\n     * you may not use this file except in compliance with the License.\n     * You may obtain a copy of the License at\n     *\n     *   http://www.apache.org/licenses/LICENSE-2.0\n     *\n     * Unless required by applicable law or agreed to in writing, software\n     * distributed under the License is distributed on an \"AS IS\" BASIS,\n     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n     * See the License for the specific language governing permissions and\n     * limitations under the License.\n     */\n\n    var autoKeyword = \"auto\";\n    var directionSetting = {\n        \"\": 1,\n        \"lr\": 1,\n        \"rl\": 1\n    };\n    var alignSetting = {\n        \"start\": 1,\n        \"center\": 1,\n        \"end\": 1,\n        \"left\": 1,\n        \"right\": 1,\n        \"auto\": 1,\n        \"line-left\": 1,\n        \"line-right\": 1\n    };\n    function findDirectionSetting(value) {\n        if (typeof value !== \"string\") {\n            return false;\n        }\n        var dir = directionSetting[value.toLowerCase()];\n        return dir ? value.toLowerCase() : false;\n    }\n    function findAlignSetting(value) {\n        if (typeof value !== \"string\") {\n            return false;\n        }\n        var align = alignSetting[value.toLowerCase()];\n        return align ? value.toLowerCase() : false;\n    }\n    function VTTCue(startTime, endTime, text) {\n        /**\n         * Shim implementation specific properties. These properties are not in\n         * the spec.\n         */\n\n        // Lets us know when the VTTCue's data has changed in such a way that we need\n        // to recompute its display state. This lets us compute its display state\n        // lazily.\n        this.hasBeenReset = false;\n\n        /**\n         * VTTCue and TextTrackCue properties\n         * http://dev.w3.org/html5/webvtt/#vttcue-interface\n         */\n\n        var _id = \"\";\n        var _pauseOnExit = false;\n        var _startTime = startTime;\n        var _endTime = endTime;\n        var _text = text;\n        var _region = null;\n        var _vertical = \"\";\n        var _snapToLines = true;\n        var _line = \"auto\";\n        var _lineAlign = \"start\";\n        var _position = \"auto\";\n        var _positionAlign = \"auto\";\n        var _size = 100;\n        var _align = \"center\";\n        Object.defineProperties(this, {\n            \"id\": {\n                enumerable: true,\n                get: function () {\n                    return _id;\n                },\n                set: function (value) {\n                    _id = \"\" + value;\n                }\n            },\n            \"pauseOnExit\": {\n                enumerable: true,\n                get: function () {\n                    return _pauseOnExit;\n                },\n                set: function (value) {\n                    _pauseOnExit = !!value;\n                }\n            },\n            \"startTime\": {\n                enumerable: true,\n                get: function () {\n                    return _startTime;\n                },\n                set: function (value) {\n                    if (typeof value !== \"number\") {\n                        throw new TypeError(\"Start time must be set to a number.\");\n                    }\n                    _startTime = value;\n                    this.hasBeenReset = true;\n                }\n            },\n            \"endTime\": {\n                enumerable: true,\n                get: function () {\n                    return _endTime;\n                },\n                set: function (value) {\n                    if (typeof value !== \"number\") {\n                        throw new TypeError(\"End time must be set to a number.\");\n                    }\n                    _endTime = value;\n                    this.hasBeenReset = true;\n                }\n            },\n            \"text\": {\n                enumerable: true,\n                get: function () {\n                    return _text;\n                },\n                set: function (value) {\n                    _text = \"\" + value;\n                    this.hasBeenReset = true;\n                }\n            },\n            \"region\": {\n                enumerable: true,\n                get: function () {\n                    return _region;\n                },\n                set: function (value) {\n                    _region = value;\n                    this.hasBeenReset = true;\n                }\n            },\n            \"vertical\": {\n                enumerable: true,\n                get: function () {\n                    return _vertical;\n                },\n                set: function (value) {\n                    var setting = findDirectionSetting(value);\n                    // Have to check for false because the setting an be an empty string.\n                    if (setting === false) {\n                        throw new SyntaxError(\"Vertical: an invalid or illegal direction string was specified.\");\n                    }\n                    _vertical = setting;\n                    this.hasBeenReset = true;\n                }\n            },\n            \"snapToLines\": {\n                enumerable: true,\n                get: function () {\n                    return _snapToLines;\n                },\n                set: function (value) {\n                    _snapToLines = !!value;\n                    this.hasBeenReset = true;\n                }\n            },\n            \"line\": {\n                enumerable: true,\n                get: function () {\n                    return _line;\n                },\n                set: function (value) {\n                    if (typeof value !== \"number\" && value !== autoKeyword) {\n                        throw new SyntaxError(\"Line: an invalid number or illegal string was specified.\");\n                    }\n                    _line = value;\n                    this.hasBeenReset = true;\n                }\n            },\n            \"lineAlign\": {\n                enumerable: true,\n                get: function () {\n                    return _lineAlign;\n                },\n                set: function (value) {\n                    var setting = findAlignSetting(value);\n                    if (!setting) {\n                        console.warn(\"lineAlign: an invalid or illegal string was specified.\");\n                    } else {\n                        _lineAlign = setting;\n                        this.hasBeenReset = true;\n                    }\n                }\n            },\n            \"position\": {\n                enumerable: true,\n                get: function () {\n                    return _position;\n                },\n                set: function (value) {\n                    if (value < 0 || value > 100) {\n                        throw new Error(\"Position must be between 0 and 100.\");\n                    }\n                    _position = value;\n                    this.hasBeenReset = true;\n                }\n            },\n            \"positionAlign\": {\n                enumerable: true,\n                get: function () {\n                    return _positionAlign;\n                },\n                set: function (value) {\n                    var setting = findAlignSetting(value);\n                    if (!setting) {\n                        console.warn(\"positionAlign: an invalid or illegal string was specified.\");\n                    } else {\n                        _positionAlign = setting;\n                        this.hasBeenReset = true;\n                    }\n                }\n            },\n            \"size\": {\n                enumerable: true,\n                get: function () {\n                    return _size;\n                },\n                set: function (value) {\n                    if (value < 0 || value > 100) {\n                        throw new Error(\"Size must be between 0 and 100.\");\n                    }\n                    _size = value;\n                    this.hasBeenReset = true;\n                }\n            },\n            \"align\": {\n                enumerable: true,\n                get: function () {\n                    return _align;\n                },\n                set: function (value) {\n                    var setting = findAlignSetting(value);\n                    if (!setting) {\n                        throw new SyntaxError(\"align: an invalid or illegal alignment string was specified.\");\n                    }\n                    _align = setting;\n                    this.hasBeenReset = true;\n                }\n            }\n        });\n\n        /**\n         * Other <track> spec defined properties\n         */\n\n        // http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#text-track-cue-display-state\n        this.displayState = undefined;\n    }\n\n    /**\n     * VTTCue methods\n     */\n\n    VTTCue.prototype.getCueAsHTML = function () {\n        // Assume WebVTT.convertCueToDOMTree is on the global.\n        return WebVTT.convertCueToDOMTree(window, this.text);\n    };\n    var vttcue = VTTCue;\n\n    /**\n     * Copyright 2013 vtt.js Contributors\n     *\n     * Licensed under the Apache License, Version 2.0 (the \"License\");\n     * you may not use this file except in compliance with the License.\n     * You may obtain a copy of the License at\n     *\n     *   http://www.apache.org/licenses/LICENSE-2.0\n     *\n     * Unless required by applicable law or agreed to in writing, software\n     * distributed under the License is distributed on an \"AS IS\" BASIS,\n     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n     * See the License for the specific language governing permissions and\n     * limitations under the License.\n     */\n\n    var scrollSetting = {\n        \"\": true,\n        \"up\": true\n    };\n    function findScrollSetting(value) {\n        if (typeof value !== \"string\") {\n            return false;\n        }\n        var scroll = scrollSetting[value.toLowerCase()];\n        return scroll ? value.toLowerCase() : false;\n    }\n    function isValidPercentValue(value) {\n        return typeof value === \"number\" && value >= 0 && value <= 100;\n    }\n\n    // VTTRegion shim http://dev.w3.org/html5/webvtt/#vttregion-interface\n    function VTTRegion() {\n        var _width = 100;\n        var _lines = 3;\n        var _regionAnchorX = 0;\n        var _regionAnchorY = 100;\n        var _viewportAnchorX = 0;\n        var _viewportAnchorY = 100;\n        var _scroll = \"\";\n        Object.defineProperties(this, {\n            \"width\": {\n                enumerable: true,\n                get: function () {\n                    return _width;\n                },\n                set: function (value) {\n                    if (!isValidPercentValue(value)) {\n                        throw new Error(\"Width must be between 0 and 100.\");\n                    }\n                    _width = value;\n                }\n            },\n            \"lines\": {\n                enumerable: true,\n                get: function () {\n                    return _lines;\n                },\n                set: function (value) {\n                    if (typeof value !== \"number\") {\n                        throw new TypeError(\"Lines must be set to a number.\");\n                    }\n                    _lines = value;\n                }\n            },\n            \"regionAnchorY\": {\n                enumerable: true,\n                get: function () {\n                    return _regionAnchorY;\n                },\n                set: function (value) {\n                    if (!isValidPercentValue(value)) {\n                        throw new Error(\"RegionAnchorX must be between 0 and 100.\");\n                    }\n                    _regionAnchorY = value;\n                }\n            },\n            \"regionAnchorX\": {\n                enumerable: true,\n                get: function () {\n                    return _regionAnchorX;\n                },\n                set: function (value) {\n                    if (!isValidPercentValue(value)) {\n                        throw new Error(\"RegionAnchorY must be between 0 and 100.\");\n                    }\n                    _regionAnchorX = value;\n                }\n            },\n            \"viewportAnchorY\": {\n                enumerable: true,\n                get: function () {\n                    return _viewportAnchorY;\n                },\n                set: function (value) {\n                    if (!isValidPercentValue(value)) {\n                        throw new Error(\"ViewportAnchorY must be between 0 and 100.\");\n                    }\n                    _viewportAnchorY = value;\n                }\n            },\n            \"viewportAnchorX\": {\n                enumerable: true,\n                get: function () {\n                    return _viewportAnchorX;\n                },\n                set: function (value) {\n                    if (!isValidPercentValue(value)) {\n                        throw new Error(\"ViewportAnchorX must be between 0 and 100.\");\n                    }\n                    _viewportAnchorX = value;\n                }\n            },\n            \"scroll\": {\n                enumerable: true,\n                get: function () {\n                    return _scroll;\n                },\n                set: function (value) {\n                    var setting = findScrollSetting(value);\n                    // Have to check for false as an empty string is a legal value.\n                    if (setting === false) {\n                        console.warn(\"Scroll: an invalid or illegal string was specified.\");\n                    } else {\n                        _scroll = setting;\n                    }\n                }\n            }\n        });\n    }\n    var vttregion = VTTRegion;\n\n    var browserIndex = createCommonjsModule(function (module) {\n        /**\n         * Copyright 2013 vtt.js Contributors\n         *\n         * Licensed under the Apache License, Version 2.0 (the \"License\");\n         * you may not use this file except in compliance with the License.\n         * You may obtain a copy of the License at\n         *\n         *   http://www.apache.org/licenses/LICENSE-2.0\n         *\n         * Unless required by applicable law or agreed to in writing, software\n         * distributed under the License is distributed on an \"AS IS\" BASIS,\n         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n         * See the License for the specific language governing permissions and\n         * limitations under the License.\n         */\n\n            // Default exports for Node. Export the extended versions of VTTCue and\n            // VTTRegion in Node since we likely want the capability to convert back and\n            // forth between JSON. If we don't then it's not that big of a deal since we're\n            // off browser.\n\n        var vttjs = module.exports = {\n                WebVTT: vtt,\n                VTTCue: vttcue,\n                VTTRegion: vttregion\n            };\n        window_1.vttjs = vttjs;\n        window_1.WebVTT = vttjs.WebVTT;\n        var cueShim = vttjs.VTTCue;\n        var regionShim = vttjs.VTTRegion;\n        var nativeVTTCue = window_1.VTTCue;\n        var nativeVTTRegion = window_1.VTTRegion;\n        vttjs.shim = function () {\n            window_1.VTTCue = cueShim;\n            window_1.VTTRegion = regionShim;\n        };\n        vttjs.restore = function () {\n            window_1.VTTCue = nativeVTTCue;\n            window_1.VTTRegion = nativeVTTRegion;\n        };\n        if (!window_1.VTTCue) {\n            vttjs.shim();\n        }\n    });\n    browserIndex.WebVTT;\n    browserIndex.VTTCue;\n    browserIndex.VTTRegion;\n\n    /**\n     * @file tech.js\n     */\n\n    /**\n     * An Object containing a structure like: `{src: 'url', type: 'mimetype'}` or string\n     * that just contains the src url alone.\n     * * `var SourceObject = {src: 'http://ex.com/video.mp4', type: 'video/mp4'};`\n     * `var SourceString = 'http://example.com/some-video.mp4';`\n     *\n     * @typedef {Object|string} SourceObject\n     *\n     * @property {string} src\n     *           The url to the source\n     *\n     * @property {string} type\n     *           The mime type of the source\n     */\n\n    /**\n     * A function used by {@link Tech} to create a new {@link TextTrack}.\n     *\n     * @private\n     *\n     * @param {Tech} self\n     *        An instance of the Tech class.\n     *\n     * @param {string} kind\n     *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)\n     *\n     * @param {string} [label]\n     *        Label to identify the text track\n     *\n     * @param {string} [language]\n     *        Two letter language abbreviation\n     *\n     * @param {Object} [options={}]\n     *        An object with additional text track options\n     *\n     * @return {TextTrack}\n     *          The text track that was created.\n     */\n    function createTrackHelper(self, kind, label, language, options = {}) {\n        const tracks = self.textTracks();\n        options.kind = kind;\n        if (label) {\n            options.label = label;\n        }\n        if (language) {\n            options.language = language;\n        }\n        options.tech = self;\n        const track = new ALL.text.TrackClass(options);\n        tracks.addTrack(track);\n        return track;\n    }\n\n    /**\n     * This is the base class for media playback technology controllers, such as\n     * {@link HTML5}\n     *\n     * @extends Component\n     */\n    class Tech extends Component$1 {\n        /**\n         * Create an instance of this Tech.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {Function} [ready]\n         *        Callback function to call when the `HTML5` Tech is ready.\n         */\n        constructor(options = {}, ready = function () {}) {\n            // we don't want the tech to report user activity automatically.\n            // This is done manually in addControlsListeners\n            options.reportTouchActivity = false;\n            super(null, options, ready);\n            this.onDurationChange_ = e => this.onDurationChange(e);\n            this.trackProgress_ = e => this.trackProgress(e);\n            this.trackCurrentTime_ = e => this.trackCurrentTime(e);\n            this.stopTrackingCurrentTime_ = e => this.stopTrackingCurrentTime(e);\n            this.disposeSourceHandler_ = e => this.disposeSourceHandler(e);\n            this.queuedHanders_ = new Set();\n\n            // keep track of whether the current source has played at all to\n            // implement a very limited played()\n            this.hasStarted_ = false;\n            this.on('playing', function () {\n                this.hasStarted_ = true;\n            });\n            this.on('loadstart', function () {\n                this.hasStarted_ = false;\n            });\n            ALL.names.forEach(name => {\n                const props = ALL[name];\n                if (options && options[props.getterName]) {\n                    this[props.privateName] = options[props.getterName];\n                }\n            });\n\n            // Manually track progress in cases where the browser/tech doesn't report it.\n            if (!this.featuresProgressEvents) {\n                this.manualProgressOn();\n            }\n\n            // Manually track timeupdates in cases where the browser/tech doesn't report it.\n            if (!this.featuresTimeupdateEvents) {\n                this.manualTimeUpdatesOn();\n            }\n            ['Text', 'Audio', 'Video'].forEach(track => {\n                if (options[`native${track}Tracks`] === false) {\n                    this[`featuresNative${track}Tracks`] = false;\n                }\n            });\n            if (options.nativeCaptions === false || options.nativeTextTracks === false) {\n                this.featuresNativeTextTracks = false;\n            } else if (options.nativeCaptions === true || options.nativeTextTracks === true) {\n                this.featuresNativeTextTracks = true;\n            }\n            if (!this.featuresNativeTextTracks) {\n                this.emulateTextTracks();\n            }\n            this.preloadTextTracks = options.preloadTextTracks !== false;\n            this.autoRemoteTextTracks_ = new ALL.text.ListClass();\n            this.initTrackListeners();\n\n            // Turn on component tap events only if not using native controls\n            if (!options.nativeControlsForTouch) {\n                this.emitTapEvents();\n            }\n            if (this.constructor) {\n                this.name_ = this.constructor.name || 'Unknown Tech';\n            }\n        }\n\n        /**\n         * A special function to trigger source set in a way that will allow player\n         * to re-trigger if the player or tech are not ready yet.\n         *\n         * @fires Tech#sourceset\n         * @param {string} src The source string at the time of the source changing.\n         */\n        triggerSourceset(src) {\n            if (!this.isReady_) {\n                // on initial ready we have to trigger source set\n                // 1ms after ready so that player can watch for it.\n                this.one('ready', () => this.setTimeout(() => this.triggerSourceset(src), 1));\n            }\n\n            /**\n             * Fired when the source is set on the tech causing the media element\n             * to reload.\n             *\n             * @see {@link Player#event:sourceset}\n             * @event Tech#sourceset\n             * @type {Event}\n             */\n            this.trigger({\n                src,\n                type: 'sourceset'\n            });\n        }\n\n        /* Fallbacks for unsupported event types\n    ================================================================================ */\n\n        /**\n         * Polyfill the `progress` event for browsers that don't support it natively.\n         *\n         * @see {@link Tech#trackProgress}\n         */\n        manualProgressOn() {\n            this.on('durationchange', this.onDurationChange_);\n            this.manualProgress = true;\n\n            // Trigger progress watching when a source begins loading\n            this.one('ready', this.trackProgress_);\n        }\n\n        /**\n         * Turn off the polyfill for `progress` events that was created in\n         * {@link Tech#manualProgressOn}\n         */\n        manualProgressOff() {\n            this.manualProgress = false;\n            this.stopTrackingProgress();\n            this.off('durationchange', this.onDurationChange_);\n        }\n\n        /**\n         * This is used to trigger a `progress` event when the buffered percent changes. It\n         * sets an interval function that will be called every 500 milliseconds to check if the\n         * buffer end percent has changed.\n         *\n         * > This function is called by {@link Tech#manualProgressOn}\n         *\n         * @param {Event} event\n         *        The `ready` event that caused this to run.\n         *\n         * @listens Tech#ready\n         * @fires Tech#progress\n         */\n        trackProgress(event) {\n            this.stopTrackingProgress();\n            this.progressInterval = this.setInterval(bind_(this, function () {\n                // Don't trigger unless buffered amount is greater than last time\n\n                const numBufferedPercent = this.bufferedPercent();\n                if (this.bufferedPercent_ !== numBufferedPercent) {\n                    /**\n                     * See {@link Player#progress}\n                     *\n                     * @event Tech#progress\n                     * @type {Event}\n                     */\n                    this.trigger('progress');\n                }\n                this.bufferedPercent_ = numBufferedPercent;\n                if (numBufferedPercent === 1) {\n                    this.stopTrackingProgress();\n                }\n            }), 500);\n        }\n\n        /**\n         * Update our internal duration on a `durationchange` event by calling\n         * {@link Tech#duration}.\n         *\n         * @param {Event} event\n         *        The `durationchange` event that caused this to run.\n         *\n         * @listens Tech#durationchange\n         */\n        onDurationChange(event) {\n            this.duration_ = this.duration();\n        }\n\n        /**\n         * Get and create a `TimeRange` object for buffering.\n         *\n         * @return { import('../utils/time').TimeRange }\n         *         The time range object that was created.\n         */\n        buffered() {\n            return createTimeRanges$1(0, 0);\n        }\n\n        /**\n         * Get the percentage of the current video that is currently buffered.\n         *\n         * @return {number}\n         *         A number from 0 to 1 that represents the decimal percentage of the\n         *         video that is buffered.\n         *\n         */\n        bufferedPercent() {\n            return bufferedPercent(this.buffered(), this.duration_);\n        }\n\n        /**\n         * Turn off the polyfill for `progress` events that was created in\n         * {@link Tech#manualProgressOn}\n         * Stop manually tracking progress events by clearing the interval that was set in\n         * {@link Tech#trackProgress}.\n         */\n        stopTrackingProgress() {\n            this.clearInterval(this.progressInterval);\n        }\n\n        /**\n         * Polyfill the `timeupdate` event for browsers that don't support it.\n         *\n         * @see {@link Tech#trackCurrentTime}\n         */\n        manualTimeUpdatesOn() {\n            this.manualTimeUpdates = true;\n            this.on('play', this.trackCurrentTime_);\n            this.on('pause', this.stopTrackingCurrentTime_);\n        }\n\n        /**\n         * Turn off the polyfill for `timeupdate` events that was created in\n         * {@link Tech#manualTimeUpdatesOn}\n         */\n        manualTimeUpdatesOff() {\n            this.manualTimeUpdates = false;\n            this.stopTrackingCurrentTime();\n            this.off('play', this.trackCurrentTime_);\n            this.off('pause', this.stopTrackingCurrentTime_);\n        }\n\n        /**\n         * Sets up an interval function to track current time and trigger `timeupdate` every\n         * 250 milliseconds.\n         *\n         * @listens Tech#play\n         * @triggers Tech#timeupdate\n         */\n        trackCurrentTime() {\n            if (this.currentTimeInterval) {\n                this.stopTrackingCurrentTime();\n            }\n            this.currentTimeInterval = this.setInterval(function () {\n                /**\n                 * Triggered at an interval of 250ms to indicated that time is passing in the video.\n                 *\n                 * @event Tech#timeupdate\n                 * @type {Event}\n                 */\n                this.trigger({\n                    type: 'timeupdate',\n                    target: this,\n                    manuallyTriggered: true\n                });\n\n                // 42 = 24 fps // 250 is what Webkit uses // FF uses 15\n            }, 250);\n        }\n\n        /**\n         * Stop the interval function created in {@link Tech#trackCurrentTime} so that the\n         * `timeupdate` event is no longer triggered.\n         *\n         * @listens {Tech#pause}\n         */\n        stopTrackingCurrentTime() {\n            this.clearInterval(this.currentTimeInterval);\n\n            // #1002 - if the video ends right before the next timeupdate would happen,\n            // the progress bar won't make it all the way to the end\n            this.trigger({\n                type: 'timeupdate',\n                target: this,\n                manuallyTriggered: true\n            });\n        }\n\n        /**\n         * Turn off all event polyfills, clear the `Tech`s {@link AudioTrackList},\n         * {@link VideoTrackList}, and {@link TextTrackList}, and dispose of this Tech.\n         *\n         * @fires Component#dispose\n         */\n        dispose() {\n            // clear out all tracks because we can't reuse them between techs\n            this.clearTracks(NORMAL.names);\n\n            // Turn off any manual progress or timeupdate tracking\n            if (this.manualProgress) {\n                this.manualProgressOff();\n            }\n            if (this.manualTimeUpdates) {\n                this.manualTimeUpdatesOff();\n            }\n            super.dispose();\n        }\n\n        /**\n         * Clear out a single `TrackList` or an array of `TrackLists` given their names.\n         *\n         * > Note: Techs without source handlers should call this between sources for `video`\n         *         & `audio` tracks. You don't want to use them between tracks!\n         *\n         * @param {string[]|string} types\n         *        TrackList names to clear, valid names are `video`, `audio`, and\n         *        `text`.\n         */\n        clearTracks(types) {\n            types = [].concat(types);\n            // clear out all tracks because we can't reuse them between techs\n            types.forEach(type => {\n                const list = this[`${type}Tracks`]() || [];\n                let i = list.length;\n                while (i--) {\n                    const track = list[i];\n                    if (type === 'text') {\n                        this.removeRemoteTextTrack(track);\n                    }\n                    list.removeTrack(track);\n                }\n            });\n        }\n\n        /**\n         * Remove any TextTracks added via addRemoteTextTrack that are\n         * flagged for automatic garbage collection\n         */\n        cleanupAutoTextTracks() {\n            const list = this.autoRemoteTextTracks_ || [];\n            let i = list.length;\n            while (i--) {\n                const track = list[i];\n                this.removeRemoteTextTrack(track);\n            }\n        }\n\n        /**\n         * Reset the tech, which will removes all sources and reset the internal readyState.\n         *\n         * @abstract\n         */\n        reset() {}\n\n        /**\n         * Get the value of `crossOrigin` from the tech.\n         *\n         * @abstract\n         *\n         * @see {Html5#crossOrigin}\n         */\n        crossOrigin() {}\n\n        /**\n         * Set the value of `crossOrigin` on the tech.\n         *\n         * @abstract\n         *\n         * @param {string} crossOrigin the crossOrigin value\n         * @see {Html5#setCrossOrigin}\n         */\n        setCrossOrigin() {}\n\n        /**\n         * Get or set an error on the Tech.\n         *\n         * @param {MediaError} [err]\n         *        Error to set on the Tech\n         *\n         * @return {MediaError|null}\n         *         The current error object on the tech, or null if there isn't one.\n         */\n        error(err) {\n            if (err !== undefined) {\n                this.error_ = new MediaError(err);\n                this.trigger('error');\n            }\n            return this.error_;\n        }\n\n        /**\n         * Returns the `TimeRange`s that have been played through for the current source.\n         *\n         * > NOTE: This implementation is incomplete. It does not track the played `TimeRange`.\n         *         It only checks whether the source has played at all or not.\n         *\n         * @return { import('../utils/time').TimeRange }\n         *         - A single time range if this video has played\n         *         - An empty set of ranges if not.\n         */\n        played() {\n            if (this.hasStarted_) {\n                return createTimeRanges$1(0, 0);\n            }\n            return createTimeRanges$1();\n        }\n\n        /**\n         * Start playback\n         *\n         * @abstract\n         *\n         * @see {Html5#play}\n         */\n        play() {}\n\n        /**\n         * Set whether we are scrubbing or not\n         *\n         * @abstract\n         * @param {boolean} _isScrubbing\n         *                  - true for we are currently scrubbing\n         *                  - false for we are no longer scrubbing\n         *\n         * @see {Html5#setScrubbing}\n         */\n        setScrubbing(_isScrubbing) {}\n\n        /**\n         * Get whether we are scrubbing or not\n         *\n         * @abstract\n         *\n         * @see {Html5#scrubbing}\n         */\n        scrubbing() {}\n\n        /**\n         * Causes a manual time update to occur if {@link Tech#manualTimeUpdatesOn} was\n         * previously called.\n         *\n         * @param {number} _seconds\n         *        Set the current time of the media to this.\n         * @fires Tech#timeupdate\n         */\n        setCurrentTime(_seconds) {\n            // improve the accuracy of manual timeupdates\n            if (this.manualTimeUpdates) {\n                /**\n                 * A manual `timeupdate` event.\n                 *\n                 * @event Tech#timeupdate\n                 * @type {Event}\n                 */\n                this.trigger({\n                    type: 'timeupdate',\n                    target: this,\n                    manuallyTriggered: true\n                });\n            }\n        }\n\n        /**\n         * Turn on listeners for {@link VideoTrackList}, {@link {AudioTrackList}, and\n         * {@link TextTrackList} events.\n         *\n         * This adds {@link EventTarget~EventListeners} for `addtrack`, and  `removetrack`.\n         *\n         * @fires Tech#audiotrackchange\n         * @fires Tech#videotrackchange\n         * @fires Tech#texttrackchange\n         */\n        initTrackListeners() {\n            /**\n             * Triggered when tracks are added or removed on the Tech {@link AudioTrackList}\n             *\n             * @event Tech#audiotrackchange\n             * @type {Event}\n             */\n\n            /**\n             * Triggered when tracks are added or removed on the Tech {@link VideoTrackList}\n             *\n             * @event Tech#videotrackchange\n             * @type {Event}\n             */\n\n            /**\n             * Triggered when tracks are added or removed on the Tech {@link TextTrackList}\n             *\n             * @event Tech#texttrackchange\n             * @type {Event}\n             */\n            NORMAL.names.forEach(name => {\n                const props = NORMAL[name];\n                const trackListChanges = () => {\n                    this.trigger(`${name}trackchange`);\n                };\n                const tracks = this[props.getterName]();\n                tracks.addEventListener('removetrack', trackListChanges);\n                tracks.addEventListener('addtrack', trackListChanges);\n                this.on('dispose', () => {\n                    tracks.removeEventListener('removetrack', trackListChanges);\n                    tracks.removeEventListener('addtrack', trackListChanges);\n                });\n            });\n        }\n\n        /**\n         * Emulate TextTracks using vtt.js if necessary\n         *\n         * @fires Tech#vttjsloaded\n         * @fires Tech#vttjserror\n         */\n        addWebVttScript_() {\n            if (window.WebVTT) {\n                return;\n            }\n\n            // Initially, Tech.el_ is a child of a dummy-div wait until the Component system\n            // signals that the Tech is ready at which point Tech.el_ is part of the DOM\n            // before inserting the WebVTT script\n            if (document.body.contains(this.el())) {\n                // load via require if available and vtt.js script location was not passed in\n                // as an option. novtt builds will turn the above require call into an empty object\n                // which will cause this if check to always fail.\n                if (!this.options_['vtt.js'] && isPlain(browserIndex) && Object.keys(browserIndex).length > 0) {\n                    this.trigger('vttjsloaded');\n                    return;\n                }\n\n                // load vtt.js via the script location option or the cdn of no location was\n                // passed in\n                const script = document.createElement('script');\n                script.src = this.options_['vtt.js'] || 'https://vjs.zencdn.net/vttjs/0.14.1/vtt.min.js';\n                script.onload = () => {\n                    /**\n                     * Fired when vtt.js is loaded.\n                     *\n                     * @event Tech#vttjsloaded\n                     * @type {Event}\n                     */\n                    this.trigger('vttjsloaded');\n                };\n                script.onerror = () => {\n                    /**\n                     * Fired when vtt.js was not loaded due to an error\n                     *\n                     * @event Tech#vttjsloaded\n                     * @type {Event}\n                     */\n                    this.trigger('vttjserror');\n                };\n                this.on('dispose', () => {\n                    script.onload = null;\n                    script.onerror = null;\n                });\n                // but have not loaded yet and we set it to true before the inject so that\n                // we don't overwrite the injected window.WebVTT if it loads right away\n                window.WebVTT = true;\n                this.el().parentNode.appendChild(script);\n            } else {\n                this.ready(this.addWebVttScript_);\n            }\n        }\n\n        /**\n         * Emulate texttracks\n         *\n         */\n        emulateTextTracks() {\n            const tracks = this.textTracks();\n            const remoteTracks = this.remoteTextTracks();\n            const handleAddTrack = e => tracks.addTrack(e.track);\n            const handleRemoveTrack = e => tracks.removeTrack(e.track);\n            remoteTracks.on('addtrack', handleAddTrack);\n            remoteTracks.on('removetrack', handleRemoveTrack);\n            this.addWebVttScript_();\n            const updateDisplay = () => this.trigger('texttrackchange');\n            const textTracksChanges = () => {\n                updateDisplay();\n                for (let i = 0; i < tracks.length; i++) {\n                    const track = tracks[i];\n                    track.removeEventListener('cuechange', updateDisplay);\n                    if (track.mode === 'showing') {\n                        track.addEventListener('cuechange', updateDisplay);\n                    }\n                }\n            };\n            textTracksChanges();\n            tracks.addEventListener('change', textTracksChanges);\n            tracks.addEventListener('addtrack', textTracksChanges);\n            tracks.addEventListener('removetrack', textTracksChanges);\n            this.on('dispose', function () {\n                remoteTracks.off('addtrack', handleAddTrack);\n                remoteTracks.off('removetrack', handleRemoveTrack);\n                tracks.removeEventListener('change', textTracksChanges);\n                tracks.removeEventListener('addtrack', textTracksChanges);\n                tracks.removeEventListener('removetrack', textTracksChanges);\n                for (let i = 0; i < tracks.length; i++) {\n                    const track = tracks[i];\n                    track.removeEventListener('cuechange', updateDisplay);\n                }\n            });\n        }\n\n        /**\n         * Create and returns a remote {@link TextTrack} object.\n         *\n         * @param {string} kind\n         *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)\n         *\n         * @param {string} [label]\n         *        Label to identify the text track\n         *\n         * @param {string} [language]\n         *        Two letter language abbreviation\n         *\n         * @return {TextTrack}\n         *         The TextTrack that gets created.\n         */\n        addTextTrack(kind, label, language) {\n            if (!kind) {\n                throw new Error('TextTrack kind is required but was not provided');\n            }\n            return createTrackHelper(this, kind, label, language);\n        }\n\n        /**\n         * Create an emulated TextTrack for use by addRemoteTextTrack\n         *\n         * This is intended to be overridden by classes that inherit from\n         * Tech in order to create native or custom TextTracks.\n         *\n         * @param {Object} options\n         *        The object should contain the options to initialize the TextTrack with.\n         *\n         * @param {string} [options.kind]\n         *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata).\n         *\n         * @param {string} [options.label].\n         *        Label to identify the text track\n         *\n         * @param {string} [options.language]\n         *        Two letter language abbreviation.\n         *\n         * @return {HTMLTrackElement}\n         *         The track element that gets created.\n         */\n        createRemoteTextTrack(options) {\n            const track = merge$2(options, {\n                tech: this\n            });\n            return new REMOTE.remoteTextEl.TrackClass(track);\n        }\n\n        /**\n         * Creates a remote text track object and returns an html track element.\n         *\n         * > Note: This can be an emulated {@link HTMLTrackElement} or a native one.\n         *\n         * @param {Object} options\n         *        See {@link Tech#createRemoteTextTrack} for more detailed properties.\n         *\n         * @param {boolean} [manualCleanup=false]\n         *        - When false: the TextTrack will be automatically removed from the video\n         *          element whenever the source changes\n         *        - When True: The TextTrack will have to be cleaned up manually\n         *\n         * @return {HTMLTrackElement}\n         *         An Html Track Element.\n         *\n         */\n        addRemoteTextTrack(options = {}, manualCleanup) {\n            const htmlTrackElement = this.createRemoteTextTrack(options);\n            if (typeof manualCleanup !== 'boolean') {\n                manualCleanup = false;\n            }\n\n            // store HTMLTrackElement and TextTrack to remote list\n            this.remoteTextTrackEls().addTrackElement_(htmlTrackElement);\n            this.remoteTextTracks().addTrack(htmlTrackElement.track);\n            if (manualCleanup === false) {\n                // create the TextTrackList if it doesn't exist\n                this.ready(() => this.autoRemoteTextTracks_.addTrack(htmlTrackElement.track));\n            }\n            return htmlTrackElement;\n        }\n\n        /**\n         * Remove a remote text track from the remote `TextTrackList`.\n         *\n         * @param {TextTrack} track\n         *        `TextTrack` to remove from the `TextTrackList`\n         */\n        removeRemoteTextTrack(track) {\n            const trackElement = this.remoteTextTrackEls().getTrackElementByTrack_(track);\n\n            // remove HTMLTrackElement and TextTrack from remote list\n            this.remoteTextTrackEls().removeTrackElement_(trackElement);\n            this.remoteTextTracks().removeTrack(track);\n            this.autoRemoteTextTracks_.removeTrack(track);\n        }\n\n        /**\n         * Gets available media playback quality metrics as specified by the W3C's Media\n         * Playback Quality API.\n         *\n         * @see [Spec]{@link https://wicg.github.io/media-playback-quality}\n         *\n         * @return {Object}\n         *         An object with supported media playback quality metrics\n         *\n         * @abstract\n         */\n        getVideoPlaybackQuality() {\n            return {};\n        }\n\n        /**\n         * Attempt to create a floating video window always on top of other windows\n         * so that users may continue consuming media while they interact with other\n         * content sites, or applications on their device.\n         *\n         * @see [Spec]{@link https://wicg.github.io/picture-in-picture}\n         *\n         * @return {Promise|undefined}\n         *         A promise with a Picture-in-Picture window if the browser supports\n         *         Promises (or one was passed in as an option). It returns undefined\n         *         otherwise.\n         *\n         * @abstract\n         */\n        requestPictureInPicture() {\n            return Promise.reject();\n        }\n\n        /**\n         * A method to check for the value of the 'disablePictureInPicture' <video> property.\n         * Defaults to true, as it should be considered disabled if the tech does not support pip\n         *\n         * @abstract\n         */\n        disablePictureInPicture() {\n            return true;\n        }\n\n        /**\n         * A method to set or unset the 'disablePictureInPicture' <video> property.\n         *\n         * @abstract\n         */\n        setDisablePictureInPicture() {}\n\n        /**\n         * A fallback implementation of requestVideoFrameCallback using requestAnimationFrame\n         *\n         * @param {function} cb\n         * @return {number} request id\n         */\n        requestVideoFrameCallback(cb) {\n            const id = newGUID();\n            if (!this.isReady_ || this.paused()) {\n                this.queuedHanders_.add(id);\n                this.one('playing', () => {\n                    if (this.queuedHanders_.has(id)) {\n                        this.queuedHanders_.delete(id);\n                        cb();\n                    }\n                });\n            } else {\n                this.requestNamedAnimationFrame(id, cb);\n            }\n            return id;\n        }\n\n        /**\n         * A fallback implementation of cancelVideoFrameCallback\n         *\n         * @param {number} id id of callback to be cancelled\n         */\n        cancelVideoFrameCallback(id) {\n            if (this.queuedHanders_.has(id)) {\n                this.queuedHanders_.delete(id);\n            } else {\n                this.cancelNamedAnimationFrame(id);\n            }\n        }\n\n        /**\n         * A method to set a poster from a `Tech`.\n         *\n         * @abstract\n         */\n        setPoster() {}\n\n        /**\n         * A method to check for the presence of the 'playsinline' <video> attribute.\n         *\n         * @abstract\n         */\n        playsinline() {}\n\n        /**\n         * A method to set or unset the 'playsinline' <video> attribute.\n         *\n         * @abstract\n         */\n        setPlaysinline() {}\n\n        /**\n         * Attempt to force override of native audio tracks.\n         *\n         * @param {boolean} override - If set to true native audio will be overridden,\n         * otherwise native audio will potentially be used.\n         *\n         * @abstract\n         */\n        overrideNativeAudioTracks(override) {}\n\n        /**\n         * Attempt to force override of native video tracks.\n         *\n         * @param {boolean} override - If set to true native video will be overridden,\n         * otherwise native video will potentially be used.\n         *\n         * @abstract\n         */\n        overrideNativeVideoTracks(override) {}\n\n        /**\n         * Check if the tech can support the given mime-type.\n         *\n         * The base tech does not support any type, but source handlers might\n         * overwrite this.\n         *\n         * @param  {string} _type\n         *         The mimetype to check for support\n         *\n         * @return {string}\n         *         'probably', 'maybe', or empty string\n         *\n         * @see [Spec]{@link https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/canPlayType}\n         *\n         * @abstract\n         */\n        canPlayType(_type) {\n            return '';\n        }\n\n        /**\n         * Check if the type is supported by this tech.\n         *\n         * The base tech does not support any type, but source handlers might\n         * overwrite this.\n         *\n         * @param {string} _type\n         *        The media type to check\n         * @return {string} Returns the native video element's response\n         */\n        static canPlayType(_type) {\n            return '';\n        }\n\n        /**\n         * Check if the tech can support the given source\n         *\n         * @param {Object} srcObj\n         *        The source object\n         * @param {Object} options\n         *        The options passed to the tech\n         * @return {string} 'probably', 'maybe', or '' (empty string)\n         */\n        static canPlaySource(srcObj, options) {\n            return Tech.canPlayType(srcObj.type);\n        }\n\n        /*\n     * Return whether the argument is a Tech or not.\n     * Can be passed either a Class like `Html5` or a instance like `player.tech_`\n     *\n     * @param {Object} component\n     *        The item to check\n     *\n     * @return {boolean}\n     *         Whether it is a tech or not\n     *         - True if it is a tech\n     *         - False if it is not\n     */\n        static isTech(component) {\n            return component.prototype instanceof Tech || component instanceof Tech || component === Tech;\n        }\n\n        /**\n         * Registers a `Tech` into a shared list for videojs.\n         *\n         * @param {string} name\n         *        Name of the `Tech` to register.\n         *\n         * @param {Object} tech\n         *        The `Tech` class to register.\n         */\n        static registerTech(name, tech) {\n            if (!Tech.techs_) {\n                Tech.techs_ = {};\n            }\n            if (!Tech.isTech(tech)) {\n                throw new Error(`Tech ${name} must be a Tech`);\n            }\n            if (!Tech.canPlayType) {\n                throw new Error('Techs must have a static canPlayType method on them');\n            }\n            if (!Tech.canPlaySource) {\n                throw new Error('Techs must have a static canPlaySource method on them');\n            }\n            name = toTitleCase$1(name);\n            Tech.techs_[name] = tech;\n            Tech.techs_[toLowerCase(name)] = tech;\n            if (name !== 'Tech') {\n                // camel case the techName for use in techOrder\n                Tech.defaultTechOrder_.push(name);\n            }\n            return tech;\n        }\n\n        /**\n         * Get a `Tech` from the shared list by name.\n         *\n         * @param {string} name\n         *        `camelCase` or `TitleCase` name of the Tech to get\n         *\n         * @return {Tech|undefined}\n         *         The `Tech` or undefined if there was no tech with the name requested.\n         */\n        static getTech(name) {\n            if (!name) {\n                return;\n            }\n            if (Tech.techs_ && Tech.techs_[name]) {\n                return Tech.techs_[name];\n            }\n            name = toTitleCase$1(name);\n            if (window && window.videojs && window.videojs[name]) {\n                log$1.warn(`The ${name} tech was added to the videojs object when it should be registered using videojs.registerTech(name, tech)`);\n                return window.videojs[name];\n            }\n        }\n    }\n\n    /**\n     * Get the {@link VideoTrackList}\n     *\n     * @returns {VideoTrackList}\n     * @method Tech.prototype.videoTracks\n     */\n\n    /**\n     * Get the {@link AudioTrackList}\n     *\n     * @returns {AudioTrackList}\n     * @method Tech.prototype.audioTracks\n     */\n\n    /**\n     * Get the {@link TextTrackList}\n     *\n     * @returns {TextTrackList}\n     * @method Tech.prototype.textTracks\n     */\n\n    /**\n     * Get the remote element {@link TextTrackList}\n     *\n     * @returns {TextTrackList}\n     * @method Tech.prototype.remoteTextTracks\n     */\n\n    /**\n     * Get the remote element {@link HtmlTrackElementList}\n     *\n     * @returns {HtmlTrackElementList}\n     * @method Tech.prototype.remoteTextTrackEls\n     */\n\n    ALL.names.forEach(function (name) {\n        const props = ALL[name];\n        Tech.prototype[props.getterName] = function () {\n            this[props.privateName] = this[props.privateName] || new props.ListClass();\n            return this[props.privateName];\n        };\n    });\n\n    /**\n     * List of associated text tracks\n     *\n     * @type {TextTrackList}\n     * @private\n     * @property Tech#textTracks_\n     */\n\n    /**\n     * List of associated audio tracks.\n     *\n     * @type {AudioTrackList}\n     * @private\n     * @property Tech#audioTracks_\n     */\n\n    /**\n     * List of associated video tracks.\n     *\n     * @type {VideoTrackList}\n     * @private\n     * @property Tech#videoTracks_\n     */\n\n    /**\n     * Boolean indicating whether the `Tech` supports volume control.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Tech.prototype.featuresVolumeControl = true;\n\n    /**\n     * Boolean indicating whether the `Tech` supports muting volume.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Tech.prototype.featuresMuteControl = true;\n\n    /**\n     * Boolean indicating whether the `Tech` supports fullscreen resize control.\n     * Resizing plugins using request fullscreen reloads the plugin\n     *\n     * @type {boolean}\n     * @default\n     */\n    Tech.prototype.featuresFullscreenResize = false;\n\n    /**\n     * Boolean indicating whether the `Tech` supports changing the speed at which the video\n     * plays. Examples:\n     *   - Set player to play 2x (twice) as fast\n     *   - Set player to play 0.5x (half) as fast\n     *\n     * @type {boolean}\n     * @default\n     */\n    Tech.prototype.featuresPlaybackRate = false;\n\n    /**\n     * Boolean indicating whether the `Tech` supports the `progress` event.\n     * This will be used to determine if {@link Tech#manualProgressOn} should be called.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Tech.prototype.featuresProgressEvents = false;\n\n    /**\n     * Boolean indicating whether the `Tech` supports the `sourceset` event.\n     *\n     * A tech should set this to `true` and then use {@link Tech#triggerSourceset}\n     * to trigger a {@link Tech#event:sourceset} at the earliest time after getting\n     * a new source.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Tech.prototype.featuresSourceset = false;\n\n    /**\n     * Boolean indicating whether the `Tech` supports the `timeupdate` event.\n     * This will be used to determine if {@link Tech#manualTimeUpdates} should be called.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Tech.prototype.featuresTimeupdateEvents = false;\n\n    /**\n     * Boolean indicating whether the `Tech` supports the native `TextTrack`s.\n     * This will help us integrate with native `TextTrack`s if the browser supports them.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Tech.prototype.featuresNativeTextTracks = false;\n\n    /**\n     * Boolean indicating whether the `Tech` supports `requestVideoFrameCallback`.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Tech.prototype.featuresVideoFrameCallback = false;\n\n    /**\n     * A functional mixin for techs that want to use the Source Handler pattern.\n     * Source handlers are scripts for handling specific formats.\n     * The source handler pattern is used for adaptive formats (HLS, DASH) that\n     * manually load video data and feed it into a Source Buffer (Media Source Extensions)\n     * Example: `Tech.withSourceHandlers.call(MyTech);`\n     *\n     * @param {Tech} _Tech\n     *        The tech to add source handler functions to.\n     *\n     * @mixes Tech~SourceHandlerAdditions\n     */\n    Tech.withSourceHandlers = function (_Tech) {\n        /**\n         * Register a source handler\n         *\n         * @param {Function} handler\n         *        The source handler class\n         *\n         * @param {number} [index]\n         *        Register it at the following index\n         */\n        _Tech.registerSourceHandler = function (handler, index) {\n            let handlers = _Tech.sourceHandlers;\n            if (!handlers) {\n                handlers = _Tech.sourceHandlers = [];\n            }\n            if (index === undefined) {\n                // add to the end of the list\n                index = handlers.length;\n            }\n            handlers.splice(index, 0, handler);\n        };\n\n        /**\n         * Check if the tech can support the given type. Also checks the\n         * Techs sourceHandlers.\n         *\n         * @param {string} type\n         *         The mimetype to check.\n         *\n         * @return {string}\n         *         'probably', 'maybe', or '' (empty string)\n         */\n        _Tech.canPlayType = function (type) {\n            const handlers = _Tech.sourceHandlers || [];\n            let can;\n            for (let i = 0; i < handlers.length; i++) {\n                can = handlers[i].canPlayType(type);\n                if (can) {\n                    return can;\n                }\n            }\n            return '';\n        };\n\n        /**\n         * Returns the first source handler that supports the source.\n         *\n         * TODO: Answer question: should 'probably' be prioritized over 'maybe'\n         *\n         * @param {SourceObject} source\n         *        The source object\n         *\n         * @param {Object} options\n         *        The options passed to the tech\n         *\n         * @return {SourceHandler|null}\n         *          The first source handler that supports the source or null if\n         *          no SourceHandler supports the source\n         */\n        _Tech.selectSourceHandler = function (source, options) {\n            const handlers = _Tech.sourceHandlers || [];\n            let can;\n            for (let i = 0; i < handlers.length; i++) {\n                can = handlers[i].canHandleSource(source, options);\n                if (can) {\n                    return handlers[i];\n                }\n            }\n            return null;\n        };\n\n        /**\n         * Check if the tech can support the given source.\n         *\n         * @param {SourceObject} srcObj\n         *        The source object\n         *\n         * @param {Object} options\n         *        The options passed to the tech\n         *\n         * @return {string}\n         *         'probably', 'maybe', or '' (empty string)\n         */\n        _Tech.canPlaySource = function (srcObj, options) {\n            const sh = _Tech.selectSourceHandler(srcObj, options);\n            if (sh) {\n                return sh.canHandleSource(srcObj, options);\n            }\n            return '';\n        };\n\n        /**\n         * When using a source handler, prefer its implementation of\n         * any function normally provided by the tech.\n         */\n        const deferrable = ['seekable', 'seeking', 'duration'];\n\n        /**\n         * A wrapper around {@link Tech#seekable} that will call a `SourceHandler`s seekable\n         * function if it exists, with a fallback to the Techs seekable function.\n         *\n         * @method _Tech.seekable\n         */\n\n        /**\n         * A wrapper around {@link Tech#duration} that will call a `SourceHandler`s duration\n         * function if it exists, otherwise it will fallback to the techs duration function.\n         *\n         * @method _Tech.duration\n         */\n\n        deferrable.forEach(function (fnName) {\n            const originalFn = this[fnName];\n            if (typeof originalFn !== 'function') {\n                return;\n            }\n            this[fnName] = function () {\n                if (this.sourceHandler_ && this.sourceHandler_[fnName]) {\n                    return this.sourceHandler_[fnName].apply(this.sourceHandler_, arguments);\n                }\n                return originalFn.apply(this, arguments);\n            };\n        }, _Tech.prototype);\n\n        /**\n         * Create a function for setting the source using a source object\n         * and source handlers.\n         * Should never be called unless a source handler was found.\n         *\n         * @param {SourceObject} source\n         *        A source object with src and type keys\n         */\n        _Tech.prototype.setSource = function (source) {\n            let sh = _Tech.selectSourceHandler(source, this.options_);\n            if (!sh) {\n                // Fall back to a native source handler when unsupported sources are\n                // deliberately set\n                if (_Tech.nativeSourceHandler) {\n                    sh = _Tech.nativeSourceHandler;\n                } else {\n                    log$1.error('No source handler found for the current source.');\n                }\n            }\n\n            // Dispose any existing source handler\n            this.disposeSourceHandler();\n            this.off('dispose', this.disposeSourceHandler_);\n            if (sh !== _Tech.nativeSourceHandler) {\n                this.currentSource_ = source;\n            }\n            this.sourceHandler_ = sh.handleSource(source, this, this.options_);\n            this.one('dispose', this.disposeSourceHandler_);\n        };\n\n        /**\n         * Clean up any existing SourceHandlers and listeners when the Tech is disposed.\n         *\n         * @listens Tech#dispose\n         */\n        _Tech.prototype.disposeSourceHandler = function () {\n            // if we have a source and get another one\n            // then we are loading something new\n            // than clear all of our current tracks\n            if (this.currentSource_) {\n                this.clearTracks(['audio', 'video']);\n                this.currentSource_ = null;\n            }\n\n            // always clean up auto-text tracks\n            this.cleanupAutoTextTracks();\n            if (this.sourceHandler_) {\n                if (this.sourceHandler_.dispose) {\n                    this.sourceHandler_.dispose();\n                }\n                this.sourceHandler_ = null;\n            }\n        };\n    };\n\n    // The base Tech class needs to be registered as a Component. It is the only\n    // Tech that can be registered as a Component.\n    Component$1.registerComponent('Tech', Tech);\n    Tech.registerTech('Tech', Tech);\n\n    /**\n     * A list of techs that should be added to techOrder on Players\n     *\n     * @private\n     */\n    Tech.defaultTechOrder_ = [];\n\n    /**\n     * @file middleware.js\n     * @module middleware\n     */\n    const middlewares = {};\n    const middlewareInstances = {};\n    const TERMINATOR = {};\n\n    /**\n     * A middleware object is a plain JavaScript object that has methods that\n     * match the {@link Tech} methods found in the lists of allowed\n     * {@link module:middleware.allowedGetters|getters},\n     * {@link module:middleware.allowedSetters|setters}, and\n     * {@link module:middleware.allowedMediators|mediators}.\n     *\n     * @typedef {Object} MiddlewareObject\n     */\n\n    /**\n     * A middleware factory function that should return a\n     * {@link module:middleware~MiddlewareObject|MiddlewareObject}.\n     *\n     * This factory will be called for each player when needed, with the player\n     * passed in as an argument.\n     *\n     * @callback MiddlewareFactory\n     * @param { import('../player').default } player\n     *        A Video.js player.\n     */\n\n    /**\n     * Define a middleware that the player should use by way of a factory function\n     * that returns a middleware object.\n     *\n     * @param  {string} type\n     *         The MIME type to match or `\"*\"` for all MIME types.\n     *\n     * @param  {MiddlewareFactory} middleware\n     *         A middleware factory function that will be executed for\n     *         matching types.\n     */\n    function use(type, middleware) {\n        middlewares[type] = middlewares[type] || [];\n        middlewares[type].push(middleware);\n    }\n\n    /**\n     * Asynchronously sets a source using middleware by recursing through any\n     * matching middlewares and calling `setSource` on each, passing along the\n     * previous returned value each time.\n     *\n     * @param  { import('../player').default } player\n     *         A {@link Player} instance.\n     *\n     * @param  {Tech~SourceObject} src\n     *         A source object.\n     *\n     * @param  {Function}\n     *         The next middleware to run.\n     */\n    function setSource(player, src, next) {\n        player.setTimeout(() => setSourceHelper(src, middlewares[src.type], next, player), 1);\n    }\n\n    /**\n     * When the tech is set, passes the tech to each middleware's `setTech` method.\n     *\n     * @param {Object[]} middleware\n     *        An array of middleware instances.\n     *\n     * @param { import('../tech/tech').default } tech\n     *        A Video.js tech.\n     */\n    function setTech(middleware, tech) {\n        middleware.forEach(mw => mw.setTech && mw.setTech(tech));\n    }\n\n    /**\n     * Calls a getter on the tech first, through each middleware\n     * from right to left to the player.\n     *\n     * @param  {Object[]} middleware\n     *         An array of middleware instances.\n     *\n     * @param  { import('../tech/tech').default } tech\n     *         The current tech.\n     *\n     * @param  {string} method\n     *         A method name.\n     *\n     * @return {*}\n     *         The final value from the tech after middleware has intercepted it.\n     */\n    function get(middleware, tech, method) {\n        return middleware.reduceRight(middlewareIterator(method), tech[method]());\n    }\n\n    /**\n     * Takes the argument given to the player and calls the setter method on each\n     * middleware from left to right to the tech.\n     *\n     * @param  {Object[]} middleware\n     *         An array of middleware instances.\n     *\n     * @param  { import('../tech/tech').default } tech\n     *         The current tech.\n     *\n     * @param  {string} method\n     *         A method name.\n     *\n     * @param  {*} arg\n     *         The value to set on the tech.\n     *\n     * @return {*}\n     *         The return value of the `method` of the `tech`.\n     */\n    function set(middleware, tech, method, arg) {\n        return tech[method](middleware.reduce(middlewareIterator(method), arg));\n    }\n\n    /**\n     * Takes the argument given to the player and calls the `call` version of the\n     * method on each middleware from left to right.\n     *\n     * Then, call the passed in method on the tech and return the result unchanged\n     * back to the player, through middleware, this time from right to left.\n     *\n     * @param  {Object[]} middleware\n     *         An array of middleware instances.\n     *\n     * @param  { import('../tech/tech').default } tech\n     *         The current tech.\n     *\n     * @param  {string} method\n     *         A method name.\n     *\n     * @param  {*} arg\n     *         The value to set on the tech.\n     *\n     * @return {*}\n     *         The return value of the `method` of the `tech`, regardless of the\n     *         return values of middlewares.\n     */\n    function mediate(middleware, tech, method, arg = null) {\n        const callMethod = 'call' + toTitleCase$1(method);\n        const middlewareValue = middleware.reduce(middlewareIterator(callMethod), arg);\n        const terminated = middlewareValue === TERMINATOR;\n        // deprecated. The `null` return value should instead return TERMINATOR to\n        // prevent confusion if a techs method actually returns null.\n        const returnValue = terminated ? null : tech[method](middlewareValue);\n        executeRight(middleware, method, returnValue, terminated);\n        return returnValue;\n    }\n\n    /**\n     * Enumeration of allowed getters where the keys are method names.\n     *\n     * @type {Object}\n     */\n    const allowedGetters = {\n        buffered: 1,\n        currentTime: 1,\n        duration: 1,\n        muted: 1,\n        played: 1,\n        paused: 1,\n        seekable: 1,\n        volume: 1,\n        ended: 1\n    };\n\n    /**\n     * Enumeration of allowed setters where the keys are method names.\n     *\n     * @type {Object}\n     */\n    const allowedSetters = {\n        setCurrentTime: 1,\n        setMuted: 1,\n        setVolume: 1\n    };\n\n    /**\n     * Enumeration of allowed mediators where the keys are method names.\n     *\n     * @type {Object}\n     */\n    const allowedMediators = {\n        play: 1,\n        pause: 1\n    };\n    function middlewareIterator(method) {\n        return (value, mw) => {\n            // if the previous middleware terminated, pass along the termination\n            if (value === TERMINATOR) {\n                return TERMINATOR;\n            }\n            if (mw[method]) {\n                return mw[method](value);\n            }\n            return value;\n        };\n    }\n    function executeRight(mws, method, value, terminated) {\n        for (let i = mws.length - 1; i >= 0; i--) {\n            const mw = mws[i];\n            if (mw[method]) {\n                mw[method](terminated, value);\n            }\n        }\n    }\n\n    /**\n     * Clear the middleware cache for a player.\n     *\n     * @param  { import('../player').default } player\n     *         A {@link Player} instance.\n     */\n    function clearCacheForPlayer(player) {\n        middlewareInstances[player.id()] = null;\n    }\n\n    /**\n     * {\n     *  [playerId]: [[mwFactory, mwInstance], ...]\n     * }\n     *\n     * @private\n     */\n    function getOrCreateFactory(player, mwFactory) {\n        const mws = middlewareInstances[player.id()];\n        let mw = null;\n        if (mws === undefined || mws === null) {\n            mw = mwFactory(player);\n            middlewareInstances[player.id()] = [[mwFactory, mw]];\n            return mw;\n        }\n        for (let i = 0; i < mws.length; i++) {\n            const [mwf, mwi] = mws[i];\n            if (mwf !== mwFactory) {\n                continue;\n            }\n            mw = mwi;\n        }\n        if (mw === null) {\n            mw = mwFactory(player);\n            mws.push([mwFactory, mw]);\n        }\n        return mw;\n    }\n    function setSourceHelper(src = {}, middleware = [], next, player, acc = [], lastRun = false) {\n        const [mwFactory, ...mwrest] = middleware;\n\n        // if mwFactory is a string, then we're at a fork in the road\n        if (typeof mwFactory === 'string') {\n            setSourceHelper(src, middlewares[mwFactory], next, player, acc, lastRun);\n\n            // if we have an mwFactory, call it with the player to get the mw,\n            // then call the mw's setSource method\n        } else if (mwFactory) {\n            const mw = getOrCreateFactory(player, mwFactory);\n\n            // if setSource isn't present, implicitly select this middleware\n            if (!mw.setSource) {\n                acc.push(mw);\n                return setSourceHelper(src, mwrest, next, player, acc, lastRun);\n            }\n            mw.setSource(Object.assign({}, src), function (err, _src) {\n                // something happened, try the next middleware on the current level\n                // make sure to use the old src\n                if (err) {\n                    return setSourceHelper(src, mwrest, next, player, acc, lastRun);\n                }\n\n                // we've succeeded, now we need to go deeper\n                acc.push(mw);\n\n                // if it's the same type, continue down the current chain\n                // otherwise, we want to go down the new chain\n                setSourceHelper(_src, src.type === _src.type ? mwrest : middlewares[_src.type], next, player, acc, lastRun);\n            });\n        } else if (mwrest.length) {\n            setSourceHelper(src, mwrest, next, player, acc, lastRun);\n        } else if (lastRun) {\n            next(src, acc);\n        } else {\n            setSourceHelper(src, middlewares['*'], next, player, acc, true);\n        }\n    }\n\n    /**\n     * Mimetypes\n     *\n     * @see https://www.iana.org/assignments/media-types/media-types.xhtml\n     * @typedef Mimetypes~Kind\n     * @enum\n     */\n    const MimetypesKind = {\n        opus: 'video/ogg',\n        ogv: 'video/ogg',\n        mp4: 'video/mp4',\n        mov: 'video/mp4',\n        m4v: 'video/mp4',\n        mkv: 'video/x-matroska',\n        m4a: 'audio/mp4',\n        mp3: 'audio/mpeg',\n        aac: 'audio/aac',\n        caf: 'audio/x-caf',\n        flac: 'audio/flac',\n        oga: 'audio/ogg',\n        wav: 'audio/wav',\n        m3u8: 'application/x-mpegURL',\n        mpd: 'application/dash+xml',\n        jpg: 'image/jpeg',\n        jpeg: 'image/jpeg',\n        gif: 'image/gif',\n        png: 'image/png',\n        svg: 'image/svg+xml',\n        webp: 'image/webp'\n    };\n\n    /**\n     * Get the mimetype of a given src url if possible\n     *\n     * @param {string} src\n     *        The url to the src\n     *\n     * @return {string}\n     *         return the mimetype if it was known or empty string otherwise\n     */\n    const getMimetype = function (src = '') {\n        const ext = getFileExtension(src);\n        const mimetype = MimetypesKind[ext.toLowerCase()];\n        return mimetype || '';\n    };\n\n    /**\n     * Find the mime type of a given source string if possible. Uses the player\n     * source cache.\n     *\n     * @param { import('../player').default } player\n     *        The player object\n     *\n     * @param {string} src\n     *        The source string\n     *\n     * @return {string}\n     *         The type that was found\n     */\n    const findMimetype = (player, src) => {\n        if (!src) {\n            return '';\n        }\n\n        // 1. check for the type in the `source` cache\n        if (player.cache_.source.src === src && player.cache_.source.type) {\n            return player.cache_.source.type;\n        }\n\n        // 2. see if we have this source in our `currentSources` cache\n        const matchingSources = player.cache_.sources.filter(s => s.src === src);\n        if (matchingSources.length) {\n            return matchingSources[0].type;\n        }\n\n        // 3. look for the src url in source elements and use the type there\n        const sources = player.$$('source');\n        for (let i = 0; i < sources.length; i++) {\n            const s = sources[i];\n            if (s.type && s.src && s.src === src) {\n                return s.type;\n            }\n        }\n\n        // 4. finally fallback to our list of mime types based on src url extension\n        return getMimetype(src);\n    };\n\n    /**\n     * @module filter-source\n     */\n\n    /**\n     * Filter out single bad source objects or multiple source objects in an\n     * array. Also flattens nested source object arrays into a 1 dimensional\n     * array of source objects.\n     *\n     * @param {Tech~SourceObject|Tech~SourceObject[]} src\n     *        The src object to filter\n     *\n     * @return {Tech~SourceObject[]}\n     *         An array of sourceobjects containing only valid sources\n     *\n     * @private\n     */\n    const filterSource = function (src) {\n        // traverse array\n        if (Array.isArray(src)) {\n            let newsrc = [];\n            src.forEach(function (srcobj) {\n                srcobj = filterSource(srcobj);\n                if (Array.isArray(srcobj)) {\n                    newsrc = newsrc.concat(srcobj);\n                } else if (isObject$1(srcobj)) {\n                    newsrc.push(srcobj);\n                }\n            });\n            src = newsrc;\n        } else if (typeof src === 'string' && src.trim()) {\n            // convert string into object\n            src = [fixSource({\n                src\n            })];\n        } else if (isObject$1(src) && typeof src.src === 'string' && src.src && src.src.trim()) {\n            // src is already valid\n            src = [fixSource(src)];\n        } else {\n            // invalid source, turn it into an empty array\n            src = [];\n        }\n        return src;\n    };\n\n    /**\n     * Checks src mimetype, adding it when possible\n     *\n     * @param {Tech~SourceObject} src\n     *        The src object to check\n     * @return {Tech~SourceObject}\n     *        src Object with known type\n     */\n    function fixSource(src) {\n        if (!src.type) {\n            const mimetype = getMimetype(src.src);\n            if (mimetype) {\n                src.type = mimetype;\n            }\n        }\n        return src;\n    }\n\n    var icons = \"<svg xmlns=\\\"http://www.w3.org/2000/svg\\\">\\n  <defs>\\n    <symbol viewBox=\\\"0 0 48 48\\\" id=\\\"vjs-icon-play\\\">\\n      <path d=\\\"M16 10v28l22-14z\\\"></path>\\n    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The `MediaLoader` is the `Component` that decides which playback technology to load\n     * when a player is initialized.\n     *\n     * @extends Component\n     */\n    class MediaLoader extends Component$1 {\n        /**\n         * Create an instance of this class.\n         *\n         * @param { import('../player').default } player\n         *        The `Player` that this class should attach to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {Function} [ready]\n         *        The function that is run when this component is ready.\n         */\n        constructor(player, options, ready) {\n            // MediaLoader has no element\n            const options_ = merge$2({\n                createEl: false\n            }, options);\n            super(player, options_, ready);\n\n            // If there are no sources when the player is initialized,\n            // load the first supported playback technology.\n\n            if (!options.playerOptions.sources || options.playerOptions.sources.length === 0) {\n                for (let i = 0, j = options.playerOptions.techOrder; i < j.length; i++) {\n                    const techName = toTitleCase$1(j[i]);\n                    let tech = Tech.getTech(techName);\n\n                    // Support old behavior of techs being registered as components.\n                    // Remove once that deprecated behavior is removed.\n                    if (!techName) {\n                        tech = Component$1.getComponent(techName);\n                    }\n\n                    // Check if the browser supports this technology\n                    if (tech && tech.isSupported()) {\n                        player.loadTech_(techName);\n                        break;\n                    }\n                }\n            } else {\n                // Loop through playback technologies (e.g. HTML5) and check for support.\n                // Then load the best source.\n                // A few assumptions here:\n                //   All playback technologies respect preload false.\n                player.src(options.playerOptions.sources);\n            }\n        }\n    }\n    Component$1.registerComponent('MediaLoader', MediaLoader);\n\n    /**\n     * @file clickable-component.js\n     */\n\n    /**\n     * Component which is clickable or keyboard actionable, but is not a\n     * native HTML button.\n     *\n     * @extends Component\n     */\n    class ClickableComponent extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param  { import('./player').default } player\n         *         The `Player` that this class should be attached to.\n         *\n         * @param  {Object} [options]\n         *         The key/value store of component options.\n         *\n         * @param  {function} [options.clickHandler]\n         *         The function to call when the button is clicked / activated\n         *\n         * @param  {string} [options.controlText]\n         *         The text to set on the button\n         *\n         * @param  {string} [options.className]\n         *         A class or space separated list of classes to add the component\n         *\n         */\n        constructor(player, options) {\n            super(player, options);\n            if (this.options_.controlText) {\n                this.controlText(this.options_.controlText);\n            }\n            this.handleMouseOver_ = e => this.handleMouseOver(e);\n            this.handleMouseOut_ = e => this.handleMouseOut(e);\n            this.handleClick_ = e => this.handleClick(e);\n            this.handleKeyDown_ = e => this.handleKeyDown(e);\n            this.emitTapEvents();\n            this.enable();\n        }\n\n        /**\n         * Create the `ClickableComponent`s DOM element.\n         *\n         * @param {string} [tag=div]\n         *        The element's node type.\n         *\n         * @param {Object} [props={}]\n         *        An object of properties that should be set on the element.\n         *\n         * @param {Object} [attributes={}]\n         *        An object of attributes that should be set on the element.\n         *\n         * @return {Element}\n         *         The element that gets created.\n         */\n        createEl(tag = 'div', props = {}, attributes = {}) {\n            props = Object.assign({\n                className: this.buildCSSClass(),\n                tabIndex: 0\n            }, props);\n            if (tag === 'button') {\n                log$1.error(`Creating a ClickableComponent with an HTML element of ${tag} is not supported; use a Button instead.`);\n            }\n\n            // Add ARIA attributes for clickable element which is not a native HTML button\n            attributes = Object.assign({\n                role: 'button'\n            }, attributes);\n            this.tabIndex_ = props.tabIndex;\n            const el = createEl(tag, props, attributes);\n            if (!this.player_.options_.experimentalSvgIcons) {\n                el.appendChild(createEl('span', {\n                    className: 'vjs-icon-placeholder'\n                }, {\n                    'aria-hidden': true\n                }));\n            }\n            this.createControlTextEl(el);\n            return el;\n        }\n        dispose() {\n            // remove controlTextEl_ on dispose\n            this.controlTextEl_ = null;\n            super.dispose();\n        }\n\n        /**\n         * Create a control text element on this `ClickableComponent`\n         *\n         * @param {Element} [el]\n         *        Parent element for the control text.\n         *\n         * @return {Element}\n         *         The control text element that gets created.\n         */\n        createControlTextEl(el) {\n            this.controlTextEl_ = createEl('span', {\n                className: 'vjs-control-text'\n            }, {\n                // let the screen reader user know that the text of the element may change\n                'aria-live': 'polite'\n            });\n            if (el) {\n                el.appendChild(this.controlTextEl_);\n            }\n            this.controlText(this.controlText_, el);\n            return this.controlTextEl_;\n        }\n\n        /**\n         * Get or set the localize text to use for the controls on the `ClickableComponent`.\n         *\n         * @param {string} [text]\n         *        Control text for element.\n         *\n         * @param {Element} [el=this.el()]\n         *        Element to set the title on.\n         *\n         * @return {string}\n         *         - The control text when getting\n         */\n        controlText(text, el = this.el()) {\n            if (text === undefined) {\n                return this.controlText_ || 'Need Text';\n            }\n            const localizedText = this.localize(text);\n\n            /** @protected */\n            this.controlText_ = text;\n            textContent(this.controlTextEl_, localizedText);\n            if (!this.nonIconControl && !this.player_.options_.noUITitleAttributes) {\n                // Set title attribute if only an icon is shown\n                el.setAttribute('title', localizedText);\n            }\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-control vjs-button ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * Enable this `ClickableComponent`\n         */\n        enable() {\n            if (!this.enabled_) {\n                this.enabled_ = true;\n                this.removeClass('vjs-disabled');\n                this.el_.setAttribute('aria-disabled', 'false');\n                if (typeof this.tabIndex_ !== 'undefined') {\n                    this.el_.setAttribute('tabIndex', this.tabIndex_);\n                }\n                this.on(['tap', 'click'], this.handleClick_);\n                this.on('keydown', this.handleKeyDown_);\n            }\n        }\n\n        /**\n         * Disable this `ClickableComponent`\n         */\n        disable() {\n            this.enabled_ = false;\n            this.addClass('vjs-disabled');\n            this.el_.setAttribute('aria-disabled', 'true');\n            if (typeof this.tabIndex_ !== 'undefined') {\n                this.el_.removeAttribute('tabIndex');\n            }\n            this.off('mouseover', this.handleMouseOver_);\n            this.off('mouseout', this.handleMouseOut_);\n            this.off(['tap', 'click'], this.handleClick_);\n            this.off('keydown', this.handleKeyDown_);\n        }\n\n        /**\n         * Handles language change in ClickableComponent for the player in components\n         *\n         *\n         */\n        handleLanguagechange() {\n            this.controlText(this.controlText_);\n        }\n\n        /**\n         * Event handler that is called when a `ClickableComponent` receives a\n         * `click` or `tap` event.\n         *\n         * @param {Event} event\n         *        The `tap` or `click` event that caused this function to be called.\n         *\n         * @listens tap\n         * @listens click\n         * @abstract\n         */\n        handleClick(event) {\n            if (this.options_.clickHandler) {\n                this.options_.clickHandler.call(this, arguments);\n            }\n        }\n\n        /**\n         * Event handler that is called when a `ClickableComponent` receives a\n         * `keydown` event.\n         *\n         * By default, if the key is Space or Enter, it will trigger a `click` event.\n         *\n         * @param {KeyboardEvent} event\n         *        The `keydown` event that caused this function to be called.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            // Support Space or Enter key operation to fire a click event. Also,\n            // prevent the event from propagating through the DOM and triggering\n            // Player hotkeys.\n            if (keycode.isEventKey(event, 'Space') || keycode.isEventKey(event, 'Enter')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.trigger('click');\n            } else {\n                // Pass keypress handling up for unsupported keys\n                super.handleKeyDown(event);\n            }\n        }\n    }\n    Component$1.registerComponent('ClickableComponent', ClickableComponent);\n\n    /**\n     * @file poster-image.js\n     */\n\n    /**\n     * A `ClickableComponent` that handles showing the poster image for the player.\n     *\n     * @extends ClickableComponent\n     */\n    class PosterImage extends ClickableComponent {\n        /**\n         * Create an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should attach to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.update();\n            this.update_ = e => this.update(e);\n            player.on('posterchange', this.update_);\n        }\n\n        /**\n         * Clean up and dispose of the `PosterImage`.\n         */\n        dispose() {\n            this.player().off('posterchange', this.update_);\n            super.dispose();\n        }\n\n        /**\n         * Create the `PosterImage`s DOM element.\n         *\n         * @return {Element}\n         *         The element that gets created.\n         */\n        createEl() {\n            // The el is an empty div to keep position in the DOM\n            // A picture and img el will be inserted when a source is set\n            return createEl('div', {\n                className: 'vjs-poster'\n            });\n        }\n\n        /**\n         * Get or set the `PosterImage`'s crossOrigin option.\n         *\n         * @param {string|null} [value]\n         *        The value to set the crossOrigin to. If an argument is\n         *        given, must be one of `'anonymous'` or `'use-credentials'`, or 'null'.\n         *\n         * @return {string|null}\n         *         - The current crossOrigin value of the `Player` when getting.\n         *         - undefined when setting\n         */\n        crossOrigin(value) {\n            // `null` can be set to unset a value\n            if (typeof value === 'undefined') {\n                if (this.$('img')) {\n                    // If the poster's element exists, give its value\n                    return this.$('img').crossOrigin;\n                } else if (this.player_.tech_ && this.player_.tech_.isReady_) {\n                    // If not but the tech is ready, query the tech\n                    return this.player_.crossOrigin();\n                }\n                // Otherwise check options as the  poster is usually set before the state of crossorigin\n                // can be retrieved by the getter\n                return this.player_.options_.crossOrigin || this.player_.options_.crossorigin || null;\n            }\n            if (value !== null && value !== 'anonymous' && value !== 'use-credentials') {\n                this.player_.log.warn(`crossOrigin must be null,  \"anonymous\" or \"use-credentials\", given \"${value}\"`);\n                return;\n            }\n            if (this.$('img')) {\n                this.$('img').crossOrigin = value;\n            }\n            return;\n        }\n\n        /**\n         * An {@link EventTarget~EventListener} for {@link Player#posterchange} events.\n         *\n         * @listens Player#posterchange\n         *\n         * @param {Event} [event]\n         *        The `Player#posterchange` event that triggered this function.\n         */\n        update(event) {\n            const url = this.player().poster();\n            this.setSrc(url);\n\n            // If there's no poster source we should display:none on this component\n            // so it's not still clickable or right-clickable\n            if (url) {\n                this.show();\n            } else {\n                this.hide();\n            }\n        }\n\n        /**\n         * Set the source of the `PosterImage` depending on the display method. (Re)creates\n         * the inner picture and img elementss when needed.\n         *\n         * @param {string} [url]\n         *        The URL to the source for the `PosterImage`. If not specified or falsy,\n         *        any source and ant inner picture/img are removed.\n         */\n        setSrc(url) {\n            if (!url) {\n                this.el_.textContent = '';\n                return;\n            }\n            if (!this.$('img')) {\n                this.el_.appendChild(createEl('picture', {\n                    className: 'vjs-poster',\n                    // Don't want poster to be tabbable.\n                    tabIndex: -1\n                }, {}, createEl('img', {\n                    loading: 'lazy',\n                    crossOrigin: this.crossOrigin()\n                }, {\n                    alt: ''\n                })));\n            }\n            this.$('img').src = url;\n        }\n\n        /**\n         * An {@link EventTarget~EventListener} for clicks on the `PosterImage`. See\n         * {@link ClickableComponent#handleClick} for instances where this will be triggered.\n         *\n         * @listens tap\n         * @listens click\n         * @listens keydown\n         *\n         * @param {Event} event\n         +        The `click`, `tap` or `keydown` event that caused this function to be called.\n         */\n        handleClick(event) {\n            // We don't want a click to trigger playback when controls are disabled\n            if (!this.player_.controls()) {\n                return;\n            }\n            if (this.player_.tech(true)) {\n                this.player_.tech(true).focus();\n            }\n            if (this.player_.paused()) {\n                silencePromise(this.player_.play());\n            } else {\n                this.player_.pause();\n            }\n        }\n    }\n\n    /**\n     * Get or set the `PosterImage`'s crossorigin option. For the HTML5 player, this\n     * sets the `crossOrigin` property on the `<img>` tag to control the CORS\n     * behavior.\n     *\n     * @param {string|null} [value]\n     *        The value to set the `PosterImages`'s crossorigin to. If an argument is\n     *        given, must be one of `anonymous` or `use-credentials`.\n     *\n     * @return {string|null|undefined}\n     *         - The current crossorigin value of the `Player` when getting.\n     *         - undefined when setting\n     */\n    PosterImage.prototype.crossorigin = PosterImage.prototype.crossOrigin;\n    Component$1.registerComponent('PosterImage', PosterImage);\n\n    /**\n     * @file text-track-display.js\n     */\n    const darkGray = '#222';\n    const lightGray = '#ccc';\n    const fontMap = {\n        monospace: 'monospace',\n        sansSerif: 'sans-serif',\n        serif: 'serif',\n        monospaceSansSerif: '\"Andale Mono\", \"Lucida Console\", monospace',\n        monospaceSerif: '\"Courier New\", monospace',\n        proportionalSansSerif: 'sans-serif',\n        proportionalSerif: 'serif',\n        casual: '\"Comic Sans MS\", Impact, fantasy',\n        script: '\"Monotype Corsiva\", cursive',\n        smallcaps: '\"Andale Mono\", \"Lucida Console\", monospace, sans-serif'\n    };\n\n    /**\n     * Construct an rgba color from a given hex color code.\n     *\n     * @param {number} color\n     *        Hex number for color, like #f0e or #f604e2.\n     *\n     * @param {number} opacity\n     *        Value for opacity, 0.0 - 1.0.\n     *\n     * @return {string}\n     *         The rgba color that was created, like 'rgba(255, 0, 0, 0.3)'.\n     */\n    function constructColor(color, opacity) {\n        let hex;\n        if (color.length === 4) {\n            // color looks like \"#f0e\"\n            hex = color[1] + color[1] + color[2] + color[2] + color[3] + color[3];\n        } else if (color.length === 7) {\n            // color looks like \"#f604e2\"\n            hex = color.slice(1);\n        } else {\n            throw new Error('Invalid color code provided, ' + color + '; must be formatted as e.g. #f0e or #f604e2.');\n        }\n        return 'rgba(' + parseInt(hex.slice(0, 2), 16) + ',' + parseInt(hex.slice(2, 4), 16) + ',' + parseInt(hex.slice(4, 6), 16) + ',' + opacity + ')';\n    }\n\n    /**\n     * Try to update the style of a DOM element. Some style changes will throw an error,\n     * particularly in IE8. Those should be noops.\n     *\n     * @param {Element} el\n     *        The DOM element to be styled.\n     *\n     * @param {string} style\n     *        The CSS property on the element that should be styled.\n     *\n     * @param {string} rule\n     *        The style rule that should be applied to the property.\n     *\n     * @private\n     */\n    function tryUpdateStyle(el, style, rule) {\n        try {\n            el.style[style] = rule;\n        } catch (e) {\n            // Satisfies linter.\n            return;\n        }\n    }\n\n    /**\n     * Converts the CSS top/right/bottom/left property numeric value to string in pixels.\n     *\n     * @param {number} position\n     *        The CSS top/right/bottom/left property value.\n     *\n     * @return {string}\n     *          The CSS property value that was created, like '10px'.\n     *\n     * @private\n     */\n    function getCSSPositionValue(position) {\n        return position ? `${position}px` : '';\n    }\n\n    /**\n     * The component for displaying text track cues.\n     *\n     * @extends Component\n     */\n    class TextTrackDisplay extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {Function} [ready]\n         *        The function to call when `TextTrackDisplay` is ready.\n         */\n        constructor(player, options, ready) {\n            super(player, options, ready);\n            const updateDisplayTextHandler = e => this.updateDisplay(e);\n            const updateDisplayHandler = e => {\n                this.updateDisplayOverlay();\n                this.updateDisplay(e);\n            };\n            player.on('loadstart', e => this.toggleDisplay(e));\n            player.on('texttrackchange', updateDisplayTextHandler);\n            player.on('loadedmetadata', e => {\n                this.updateDisplayOverlay();\n                this.preselectTrack(e);\n            });\n\n            // This used to be called during player init, but was causing an error\n            // if a track should show by default and the display hadn't loaded yet.\n            // Should probably be moved to an external track loader when we support\n            // tracks that don't need a display.\n            player.ready(bind_(this, function () {\n                if (player.tech_ && player.tech_.featuresNativeTextTracks) {\n                    this.hide();\n                    return;\n                }\n                player.on('fullscreenchange', updateDisplayHandler);\n                player.on('playerresize', updateDisplayHandler);\n                const screenOrientation = window.screen.orientation || window;\n                const changeOrientationEvent = window.screen.orientation ? 'change' : 'orientationchange';\n                screenOrientation.addEventListener(changeOrientationEvent, updateDisplayHandler);\n                player.on('dispose', () => screenOrientation.removeEventListener(changeOrientationEvent, updateDisplayHandler));\n                const tracks = this.options_.playerOptions.tracks || [];\n                for (let i = 0; i < tracks.length; i++) {\n                    this.player_.addRemoteTextTrack(tracks[i], true);\n                }\n                this.preselectTrack();\n            }));\n        }\n\n        /**\n         * Preselect a track following this precedence:\n         * - matches the previously selected {@link TextTrack}'s language and kind\n         * - matches the previously selected {@link TextTrack}'s language only\n         * - is the first default captions track\n         * - is the first default descriptions track\n         *\n         * @listens Player#loadstart\n         */\n        preselectTrack() {\n            const modes = {\n                captions: 1,\n                subtitles: 1\n            };\n            const trackList = this.player_.textTracks();\n            const userPref = this.player_.cache_.selectedLanguage;\n            let firstDesc;\n            let firstCaptions;\n            let preferredTrack;\n            for (let i = 0; i < trackList.length; i++) {\n                const track = trackList[i];\n                if (userPref && userPref.enabled && userPref.language && userPref.language === track.language && track.kind in modes) {\n                    // Always choose the track that matches both language and kind\n                    if (track.kind === userPref.kind) {\n                        preferredTrack = track;\n                        // or choose the first track that matches language\n                    } else if (!preferredTrack) {\n                        preferredTrack = track;\n                    }\n\n                    // clear everything if offTextTrackMenuItem was clicked\n                } else if (userPref && !userPref.enabled) {\n                    preferredTrack = null;\n                    firstDesc = null;\n                    firstCaptions = null;\n                } else if (track.default) {\n                    if (track.kind === 'descriptions' && !firstDesc) {\n                        firstDesc = track;\n                    } else if (track.kind in modes && !firstCaptions) {\n                        firstCaptions = track;\n                    }\n                }\n            }\n\n            // The preferredTrack matches the user preference and takes\n            // precedence over all the other tracks.\n            // So, display the preferredTrack before the first default track\n            // and the subtitles/captions track before the descriptions track\n            if (preferredTrack) {\n                preferredTrack.mode = 'showing';\n            } else if (firstCaptions) {\n                firstCaptions.mode = 'showing';\n            } else if (firstDesc) {\n                firstDesc.mode = 'showing';\n            }\n        }\n\n        /**\n         * Turn display of {@link TextTrack}'s from the current state into the other state.\n         * There are only two states:\n         * - 'shown'\n         * - 'hidden'\n         *\n         * @listens Player#loadstart\n         */\n        toggleDisplay() {\n            if (this.player_.tech_ && this.player_.tech_.featuresNativeTextTracks) {\n                this.hide();\n            } else {\n                this.show();\n            }\n        }\n\n        /**\n         * Create the {@link Component}'s DOM element.\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-text-track-display'\n            }, {\n                'translate': 'yes',\n                'aria-live': 'off',\n                'aria-atomic': 'true'\n            });\n        }\n\n        /**\n         * Clear all displayed {@link TextTrack}s.\n         */\n        clearDisplay() {\n            if (typeof window.WebVTT === 'function') {\n                window.WebVTT.processCues(window, [], this.el_);\n            }\n        }\n\n        /**\n         * Update the displayed TextTrack when a either a {@link Player#texttrackchange} or\n         * a {@link Player#fullscreenchange} is fired.\n         *\n         * @listens Player#texttrackchange\n         * @listens Player#fullscreenchange\n         */\n        updateDisplay() {\n            const tracks = this.player_.textTracks();\n            const allowMultipleShowingTracks = this.options_.allowMultipleShowingTracks;\n            this.clearDisplay();\n            if (allowMultipleShowingTracks) {\n                const showingTracks = [];\n                for (let i = 0; i < tracks.length; ++i) {\n                    const track = tracks[i];\n                    if (track.mode !== 'showing') {\n                        continue;\n                    }\n                    showingTracks.push(track);\n                }\n                this.updateForTrack(showingTracks);\n                return;\n            }\n\n            //  Track display prioritization model: if multiple tracks are 'showing',\n            //  display the first 'subtitles' or 'captions' track which is 'showing',\n            //  otherwise display the first 'descriptions' track which is 'showing'\n\n            let descriptionsTrack = null;\n            let captionsSubtitlesTrack = null;\n            let i = tracks.length;\n            while (i--) {\n                const track = tracks[i];\n                if (track.mode === 'showing') {\n                    if (track.kind === 'descriptions') {\n                        descriptionsTrack = track;\n                    } else {\n                        captionsSubtitlesTrack = track;\n                    }\n                }\n            }\n            if (captionsSubtitlesTrack) {\n                if (this.getAttribute('aria-live') !== 'off') {\n                    this.setAttribute('aria-live', 'off');\n                }\n                this.updateForTrack(captionsSubtitlesTrack);\n            } else if (descriptionsTrack) {\n                if (this.getAttribute('aria-live') !== 'assertive') {\n                    this.setAttribute('aria-live', 'assertive');\n                }\n                this.updateForTrack(descriptionsTrack);\n            }\n        }\n\n        /**\n         * Updates the displayed TextTrack to be sure it overlays the video when a either\n         * a {@link Player#texttrackchange} or a {@link Player#fullscreenchange} is fired.\n         */\n        updateDisplayOverlay() {\n            // inset-inline and inset-block are not supprted on old chrome, but these are\n            // only likely to be used on TV devices\n            if (!this.player_.videoHeight() || !window.CSS.supports('inset-inline: 10px')) {\n                return;\n            }\n            const playerWidth = this.player_.currentWidth();\n            const playerHeight = this.player_.currentHeight();\n            const playerAspectRatio = playerWidth / playerHeight;\n            const videoAspectRatio = this.player_.videoWidth() / this.player_.videoHeight();\n            let insetInlineMatch = 0;\n            let insetBlockMatch = 0;\n            if (Math.abs(playerAspectRatio - videoAspectRatio) > 0.1) {\n                if (playerAspectRatio > videoAspectRatio) {\n                    insetInlineMatch = Math.round((playerWidth - playerHeight * videoAspectRatio) / 2);\n                } else {\n                    insetBlockMatch = Math.round((playerHeight - playerWidth / videoAspectRatio) / 2);\n                }\n            }\n            tryUpdateStyle(this.el_, 'insetInline', getCSSPositionValue(insetInlineMatch));\n            tryUpdateStyle(this.el_, 'insetBlock', getCSSPositionValue(insetBlockMatch));\n        }\n\n        /**\n         * Style {@Link TextTrack} activeCues according to {@Link TextTrackSettings}.\n         *\n         * @param {TextTrack} track\n         *        Text track object containing active cues to style.\n         */\n        updateDisplayState(track) {\n            const overrides = this.player_.textTrackSettings.getValues();\n            const cues = track.activeCues;\n            let i = cues.length;\n            while (i--) {\n                const cue = cues[i];\n                if (!cue) {\n                    continue;\n                }\n                const cueDiv = cue.displayState;\n                if (overrides.color) {\n                    cueDiv.firstChild.style.color = overrides.color;\n                }\n                if (overrides.textOpacity) {\n                    tryUpdateStyle(cueDiv.firstChild, 'color', constructColor(overrides.color || '#fff', overrides.textOpacity));\n                }\n                if (overrides.backgroundColor) {\n                    cueDiv.firstChild.style.backgroundColor = overrides.backgroundColor;\n                }\n                if (overrides.backgroundOpacity) {\n                    tryUpdateStyle(cueDiv.firstChild, 'backgroundColor', constructColor(overrides.backgroundColor || '#000', overrides.backgroundOpacity));\n                }\n                if (overrides.windowColor) {\n                    if (overrides.windowOpacity) {\n                        tryUpdateStyle(cueDiv, 'backgroundColor', constructColor(overrides.windowColor, overrides.windowOpacity));\n                    } else {\n                        cueDiv.style.backgroundColor = overrides.windowColor;\n                    }\n                }\n                if (overrides.edgeStyle) {\n                    if (overrides.edgeStyle === 'dropshadow') {\n                        cueDiv.firstChild.style.textShadow = `2px 2px 3px ${darkGray}, 2px 2px 4px ${darkGray}, 2px 2px 5px ${darkGray}`;\n                    } else if (overrides.edgeStyle === 'raised') {\n                        cueDiv.firstChild.style.textShadow = `1px 1px ${darkGray}, 2px 2px ${darkGray}, 3px 3px ${darkGray}`;\n                    } else if (overrides.edgeStyle === 'depressed') {\n                        cueDiv.firstChild.style.textShadow = `1px 1px ${lightGray}, 0 1px ${lightGray}, -1px -1px ${darkGray}, 0 -1px ${darkGray}`;\n                    } else if (overrides.edgeStyle === 'uniform') {\n                        cueDiv.firstChild.style.textShadow = `0 0 4px ${darkGray}, 0 0 4px ${darkGray}, 0 0 4px ${darkGray}, 0 0 4px ${darkGray}`;\n                    }\n                }\n                if (overrides.fontPercent && overrides.fontPercent !== 1) {\n                    const fontSize = window.parseFloat(cueDiv.style.fontSize);\n                    cueDiv.style.fontSize = fontSize * overrides.fontPercent + 'px';\n                    cueDiv.style.height = 'auto';\n                    cueDiv.style.top = 'auto';\n                }\n                if (overrides.fontFamily && overrides.fontFamily !== 'default') {\n                    if (overrides.fontFamily === 'small-caps') {\n                        cueDiv.firstChild.style.fontVariant = 'small-caps';\n                    } else {\n                        cueDiv.firstChild.style.fontFamily = fontMap[overrides.fontFamily];\n                    }\n                }\n            }\n        }\n\n        /**\n         * Add an {@link TextTrack} to to the {@link Tech}s {@link TextTrackList}.\n         *\n         * @param {TextTrack|TextTrack[]} tracks\n         *        Text track object or text track array to be added to the list.\n         */\n        updateForTrack(tracks) {\n            if (!Array.isArray(tracks)) {\n                tracks = [tracks];\n            }\n            if (typeof window.WebVTT !== 'function' || tracks.every(track => {\n                return !track.activeCues;\n            })) {\n                return;\n            }\n            const cues = [];\n\n            // push all active track cues\n            for (let i = 0; i < tracks.length; ++i) {\n                const track = tracks[i];\n                for (let j = 0; j < track.activeCues.length; ++j) {\n                    cues.push(track.activeCues[j]);\n                }\n            }\n\n            // removes all cues before it processes new ones\n            window.WebVTT.processCues(window, cues, this.el_);\n\n            // add unique class to each language text track & add settings styling if necessary\n            for (let i = 0; i < tracks.length; ++i) {\n                const track = tracks[i];\n                for (let j = 0; j < track.activeCues.length; ++j) {\n                    const cueEl = track.activeCues[j].displayState;\n                    addClass(cueEl, 'vjs-text-track-cue', 'vjs-text-track-cue-' + (track.language ? track.language : i));\n                    if (track.language) {\n                        setAttribute(cueEl, 'lang', track.language);\n                    }\n                }\n                if (this.player_.textTrackSettings) {\n                    this.updateDisplayState(track);\n                }\n            }\n        }\n    }\n    Component$1.registerComponent('TextTrackDisplay', TextTrackDisplay);\n\n    /**\n     * @file loading-spinner.js\n     */\n\n    /**\n     * A loading spinner for use during waiting/loading events.\n     *\n     * @extends Component\n     */\n    class LoadingSpinner extends Component$1 {\n        /**\n         * Create the `LoadingSpinner`s DOM element.\n         *\n         * @return {Element}\n         *         The dom element that gets created.\n         */\n        createEl() {\n            const isAudio = this.player_.isAudio();\n            const playerType = this.localize(isAudio ? 'Audio Player' : 'Video Player');\n            const controlText = createEl('span', {\n                className: 'vjs-control-text',\n                textContent: this.localize('{1} is loading.', [playerType])\n            });\n            const el = super.createEl('div', {\n                className: 'vjs-loading-spinner',\n                dir: 'ltr'\n            });\n            el.appendChild(controlText);\n            return el;\n        }\n\n        /**\n         * Update control text on languagechange\n         */\n        handleLanguagechange() {\n            this.$('.vjs-control-text').textContent = this.localize('{1} is loading.', [this.player_.isAudio() ? 'Audio Player' : 'Video Player']);\n        }\n    }\n    Component$1.registerComponent('LoadingSpinner', LoadingSpinner);\n\n    /**\n     * @file button.js\n     */\n\n    /**\n     * Base class for all buttons.\n     *\n     * @extends ClickableComponent\n     */\n    class Button extends ClickableComponent {\n        /**\n         * Create the `Button`s DOM element.\n         *\n         * @param {string} [tag=\"button\"]\n         *        The element's node type. This argument is IGNORED: no matter what\n         *        is passed, it will always create a `button` element.\n         *\n         * @param {Object} [props={}]\n         *        An object of properties that should be set on the element.\n         *\n         * @param {Object} [attributes={}]\n         *        An object of attributes that should be set on the element.\n         *\n         * @return {Element}\n         *         The element that gets created.\n         */\n        createEl(tag, props = {}, attributes = {}) {\n            tag = 'button';\n            props = Object.assign({\n                className: this.buildCSSClass()\n            }, props);\n\n            // Add attributes for button element\n            attributes = Object.assign({\n                // Necessary since the default button type is \"submit\"\n                type: 'button'\n            }, attributes);\n            const el = createEl(tag, props, attributes);\n            if (!this.player_.options_.experimentalSvgIcons) {\n                el.appendChild(createEl('span', {\n                    className: 'vjs-icon-placeholder'\n                }, {\n                    'aria-hidden': true\n                }));\n            }\n            this.createControlTextEl(el);\n            return el;\n        }\n\n        /**\n         * Add a child `Component` inside of this `Button`.\n         *\n         * @param {string|Component} child\n         *        The name or instance of a child to add.\n         *\n         * @param {Object} [options={}]\n         *        The key/value store of options that will get passed to children of\n         *        the child.\n         *\n         * @return {Component}\n         *         The `Component` that gets added as a child. When using a string the\n         *         `Component` will get created by this process.\n         *\n         * @deprecated since version 5\n         */\n        addChild(child, options = {}) {\n            const className = this.constructor.name;\n            log$1.warn(`Adding an actionable (user controllable) child to a Button (${className}) is not supported; use a ClickableComponent instead.`);\n\n            // Avoid the error message generated by ClickableComponent's addChild method\n            return Component$1.prototype.addChild.call(this, child, options);\n        }\n\n        /**\n         * Enable the `Button` element so that it can be activated or clicked. Use this with\n         * {@link Button#disable}.\n         */\n        enable() {\n            super.enable();\n            this.el_.removeAttribute('disabled');\n        }\n\n        /**\n         * Disable the `Button` element so that it cannot be activated or clicked. Use this with\n         * {@link Button#enable}.\n         */\n        disable() {\n            super.disable();\n            this.el_.setAttribute('disabled', 'disabled');\n        }\n\n        /**\n         * This gets called when a `Button` has focus and `keydown` is triggered via a key\n         * press.\n         *\n         * @param {KeyboardEvent} event\n         *        The event that caused this function to get called.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            // Ignore Space or Enter key operation, which is handled by the browser for\n            // a button - though not for its super class, ClickableComponent. Also,\n            // prevent the event from propagating through the DOM and triggering Player\n            // hotkeys. We do not preventDefault here because we _want_ the browser to\n            // handle it.\n            if (keycode.isEventKey(event, 'Space') || keycode.isEventKey(event, 'Enter')) {\n                event.stopPropagation();\n                return;\n            }\n\n            // Pass keypress handling up for unsupported keys\n            super.handleKeyDown(event);\n        }\n    }\n    Component$1.registerComponent('Button', Button);\n\n    /**\n     * @file big-play-button.js\n     */\n\n    /**\n     * The initial play button that shows before the video has played. The hiding of the\n     * `BigPlayButton` get done via CSS and `Player` states.\n     *\n     * @extends Button\n     */\n    class BigPlayButton extends Button {\n        constructor(player, options) {\n            super(player, options);\n            this.mouseused_ = false;\n            this.setIcon('play');\n            this.on('mousedown', e => this.handleMouseDown(e));\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object. Always returns 'vjs-big-play-button'.\n         */\n        buildCSSClass() {\n            return 'vjs-big-play-button';\n        }\n\n        /**\n         * This gets called when a `BigPlayButton` \"clicked\". See {@link ClickableComponent}\n         * for more detailed information on what a click can be.\n         *\n         * @param {KeyboardEvent|MouseEvent|TouchEvent} event\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            const playPromise = this.player_.play();\n\n            // exit early if clicked via the mouse\n            if (this.mouseused_ && 'clientX' in event && 'clientY' in event) {\n                silencePromise(playPromise);\n                if (this.player_.tech(true)) {\n                    this.player_.tech(true).focus();\n                }\n                return;\n            }\n            const cb = this.player_.getChild('controlBar');\n            const playToggle = cb && cb.getChild('playToggle');\n            if (!playToggle) {\n                this.player_.tech(true).focus();\n                return;\n            }\n            const playFocus = () => playToggle.focus();\n            if (isPromise(playPromise)) {\n                playPromise.then(playFocus, () => {});\n            } else {\n                this.setTimeout(playFocus, 1);\n            }\n        }\n\n        /**\n         * Event handler that is called when a `BigPlayButton` receives a\n         * `keydown` event.\n         *\n         * @param {KeyboardEvent} event\n         *        The `keydown` event that caused this function to be called.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            this.mouseused_ = false;\n            super.handleKeyDown(event);\n        }\n\n        /**\n         * Handle `mousedown` events on the `BigPlayButton`.\n         *\n         * @param {MouseEvent} event\n         *        `mousedown` or `touchstart` event that triggered this function\n         *\n         * @listens mousedown\n         */\n        handleMouseDown(event) {\n            this.mouseused_ = true;\n        }\n    }\n\n    /**\n     * The text that should display over the `BigPlayButton`s controls. Added to for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    BigPlayButton.prototype.controlText_ = 'Play Video';\n    Component$1.registerComponent('BigPlayButton', BigPlayButton);\n\n    /**\n     * @file close-button.js\n     */\n\n    /**\n     * The `CloseButton` is a `{@link Button}` that fires a `close` event when\n     * it gets clicked.\n     *\n     * @extends Button\n     */\n    class CloseButton extends Button {\n        /**\n         * Creates an instance of the this class.\n         *\n         * @param  { import('./player').default } player\n         *         The `Player` that this class should be attached to.\n         *\n         * @param  {Object} [options]\n         *         The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.setIcon('cancel');\n            this.controlText(options && options.controlText || this.localize('Close'));\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-close-button ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * This gets called when a `CloseButton` gets clicked. See\n         * {@link ClickableComponent#handleClick} for more information on when\n         * this will be triggered\n         *\n         * @param {Event} event\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         * @fires CloseButton#close\n         */\n        handleClick(event) {\n            /**\n             * Triggered when the a `CloseButton` is clicked.\n             *\n             * @event CloseButton#close\n             * @type {Event}\n             *\n             * @property {boolean} [bubbles=false]\n             *           set to false so that the close event does not\n             *           bubble up to parents if there is no listener\n             */\n            this.trigger({\n                type: 'close',\n                bubbles: false\n            });\n        }\n        /**\n         * Event handler that is called when a `CloseButton` receives a\n         * `keydown` event.\n         *\n         * By default, if the key is Esc, it will trigger a `click` event.\n         *\n         * @param {KeyboardEvent} event\n         *        The `keydown` event that caused this function to be called.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            // Esc button will trigger `click` event\n            if (keycode.isEventKey(event, 'Esc')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.trigger('click');\n            } else {\n                // Pass keypress handling up for unsupported keys\n                super.handleKeyDown(event);\n            }\n        }\n    }\n    Component$1.registerComponent('CloseButton', CloseButton);\n\n    /**\n     * @file play-toggle.js\n     */\n\n    /**\n     * Button to toggle between play and pause.\n     *\n     * @extends Button\n     */\n    class PlayToggle extends Button {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options={}]\n         *        The key/value store of player options.\n         */\n        constructor(player, options = {}) {\n            super(player, options);\n\n            // show or hide replay icon\n            options.replay = options.replay === undefined || options.replay;\n            this.setIcon('play');\n            this.on(player, 'play', e => this.handlePlay(e));\n            this.on(player, 'pause', e => this.handlePause(e));\n            if (options.replay) {\n                this.on(player, 'ended', e => this.handleEnded(e));\n            }\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-play-control ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * This gets called when an `PlayToggle` is \"clicked\". See\n         * {@link ClickableComponent} for more detailed information on what a click can be.\n         *\n         * @param {Event} [event]\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            if (this.player_.paused()) {\n                silencePromise(this.player_.play());\n            } else {\n                this.player_.pause();\n            }\n        }\n\n        /**\n         * This gets called once after the video has ended and the user seeks so that\n         * we can change the replay button back to a play button.\n         *\n         * @param {Event} [event]\n         *        The event that caused this function to run.\n         *\n         * @listens Player#seeked\n         */\n        handleSeeked(event) {\n            this.removeClass('vjs-ended');\n            if (this.player_.paused()) {\n                this.handlePause(event);\n            } else {\n                this.handlePlay(event);\n            }\n        }\n\n        /**\n         * Add the vjs-playing class to the element so it can change appearance.\n         *\n         * @param {Event} [event]\n         *        The event that caused this function to run.\n         *\n         * @listens Player#play\n         */\n        handlePlay(event) {\n            this.removeClass('vjs-ended', 'vjs-paused');\n            this.addClass('vjs-playing');\n            // change the button text to \"Pause\"\n            this.setIcon('pause');\n            this.controlText('Pause');\n        }\n\n        /**\n         * Add the vjs-paused class to the element so it can change appearance.\n         *\n         * @param {Event} [event]\n         *        The event that caused this function to run.\n         *\n         * @listens Player#pause\n         */\n        handlePause(event) {\n            this.removeClass('vjs-playing');\n            this.addClass('vjs-paused');\n            // change the button text to \"Play\"\n            this.setIcon('play');\n            this.controlText('Play');\n        }\n\n        /**\n         * Add the vjs-ended class to the element so it can change appearance\n         *\n         * @param {Event} [event]\n         *        The event that caused this function to run.\n         *\n         * @listens Player#ended\n         */\n        handleEnded(event) {\n            this.removeClass('vjs-playing');\n            this.addClass('vjs-ended');\n            // change the button text to \"Replay\"\n            this.setIcon('replay');\n            this.controlText('Replay');\n\n            // on the next seek remove the replay button\n            this.one(this.player_, 'seeked', e => this.handleSeeked(e));\n        }\n    }\n\n    /**\n     * The text that should display over the `PlayToggle`s controls. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    PlayToggle.prototype.controlText_ = 'Play';\n    Component$1.registerComponent('PlayToggle', PlayToggle);\n\n    /**\n     * @file time-display.js\n     */\n\n    /**\n     * Displays time information about the video\n     *\n     * @extends Component\n     */\n    class TimeDisplay extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.on(player, ['timeupdate', 'ended', 'seeking'], e => this.update(e));\n            this.updateTextNode_();\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            const className = this.buildCSSClass();\n            const el = super.createEl('div', {\n                className: `${className} vjs-time-control vjs-control`\n            });\n            const span = createEl('span', {\n                className: 'vjs-control-text',\n                textContent: `${this.localize(this.labelText_)}\\u00a0`\n            }, {\n                role: 'presentation'\n            });\n            el.appendChild(span);\n            this.contentEl_ = createEl('span', {\n                className: `${className}-display`\n            }, {\n                // span elements have no implicit role, but some screen readers (notably VoiceOver)\n                // treat them as a break between items in the DOM when using arrow keys\n                // (or left-to-right swipes on iOS) to read contents of a page. Using\n                // role='presentation' causes VoiceOver to NOT treat this span as a break.\n                role: 'presentation'\n            });\n            el.appendChild(this.contentEl_);\n            return el;\n        }\n        dispose() {\n            this.contentEl_ = null;\n            this.textNode_ = null;\n            super.dispose();\n        }\n\n        /**\n         * Updates the displayed time according to the `updateContent` function which is defined in the child class.\n         *\n         * @param {Event} [event]\n         *          The `timeupdate`, `ended` or `seeking` (if enableSmoothSeeking is true) event that caused this function to be called.\n         */\n        update(event) {\n            if (!this.player_.options_.enableSmoothSeeking && event.type === 'seeking') {\n                return;\n            }\n            this.updateContent(event);\n        }\n\n        /**\n         * Updates the time display text node with a new time\n         *\n         * @param {number} [time=0] the time to update to\n         *\n         * @private\n         */\n        updateTextNode_(time = 0) {\n            time = formatTime(time);\n            if (this.formattedTime_ === time) {\n                return;\n            }\n            this.formattedTime_ = time;\n            this.requestNamedAnimationFrame('TimeDisplay#updateTextNode_', () => {\n                if (!this.contentEl_) {\n                    return;\n                }\n                let oldNode = this.textNode_;\n                if (oldNode && this.contentEl_.firstChild !== oldNode) {\n                    oldNode = null;\n                    log$1.warn('TimeDisplay#updateTextnode_: Prevented replacement of text node element since it was no longer a child of this node. Appending a new node instead.');\n                }\n                this.textNode_ = document.createTextNode(this.formattedTime_);\n                if (!this.textNode_) {\n                    return;\n                }\n                if (oldNode) {\n                    this.contentEl_.replaceChild(this.textNode_, oldNode);\n                } else {\n                    this.contentEl_.appendChild(this.textNode_);\n                }\n            });\n        }\n\n        /**\n         * To be filled out in the child class, should update the displayed time\n         * in accordance with the fact that the current time has changed.\n         *\n         * @param {Event} [event]\n         *        The `timeupdate`  event that caused this to run.\n         *\n         * @listens Player#timeupdate\n         */\n        updateContent(event) {}\n    }\n\n    /**\n     * The text that is added to the `TimeDisplay` for screen reader users.\n     *\n     * @type {string}\n     * @private\n     */\n    TimeDisplay.prototype.labelText_ = 'Time';\n\n    /**\n     * The text that should display over the `TimeDisplay`s controls. Added to for localization.\n     *\n     * @type {string}\n     * @protected\n     *\n     * @deprecated in v7; controlText_ is not used in non-active display Components\n     */\n    TimeDisplay.prototype.controlText_ = 'Time';\n    Component$1.registerComponent('TimeDisplay', TimeDisplay);\n\n    /**\n     * @file current-time-display.js\n     */\n\n    /**\n     * Displays the current time\n     *\n     * @extends Component\n     */\n    class CurrentTimeDisplay extends TimeDisplay {\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return 'vjs-current-time';\n        }\n\n        /**\n         * Update current time display\n         *\n         * @param {Event} [event]\n         *        The `timeupdate` event that caused this function to run.\n         *\n         * @listens Player#timeupdate\n         */\n        updateContent(event) {\n            // Allows for smooth scrubbing, when player can't keep up.\n            let time;\n            if (this.player_.ended()) {\n                time = this.player_.duration();\n            } else {\n                time = this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();\n            }\n            this.updateTextNode_(time);\n        }\n    }\n\n    /**\n     * The text that is added to the `CurrentTimeDisplay` for screen reader users.\n     *\n     * @type {string}\n     * @private\n     */\n    CurrentTimeDisplay.prototype.labelText_ = 'Current Time';\n\n    /**\n     * The text that should display over the `CurrentTimeDisplay`s controls. Added to for localization.\n     *\n     * @type {string}\n     * @protected\n     *\n     * @deprecated in v7; controlText_ is not used in non-active display Components\n     */\n    CurrentTimeDisplay.prototype.controlText_ = 'Current Time';\n    Component$1.registerComponent('CurrentTimeDisplay', CurrentTimeDisplay);\n\n    /**\n     * @file duration-display.js\n     */\n\n    /**\n     * Displays the duration\n     *\n     * @extends Component\n     */\n    class DurationDisplay extends TimeDisplay {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            const updateContent = e => this.updateContent(e);\n\n            // we do not want to/need to throttle duration changes,\n            // as they should always display the changed duration as\n            // it has changed\n            this.on(player, 'durationchange', updateContent);\n\n            // Listen to loadstart because the player duration is reset when a new media element is loaded,\n            // but the durationchange on the user agent will not fire.\n            // @see [Spec]{@link https://www.w3.org/TR/2011/WD-html5-20110113/video.html#media-element-load-algorithm}\n            this.on(player, 'loadstart', updateContent);\n\n            // Also listen for timeupdate (in the parent) and loadedmetadata because removing those\n            // listeners could have broken dependent applications/libraries. These\n            // can likely be removed for 7.0.\n            this.on(player, 'loadedmetadata', updateContent);\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return 'vjs-duration';\n        }\n\n        /**\n         * Update duration time display.\n         *\n         * @param {Event} [event]\n         *        The `durationchange`, `timeupdate`, or `loadedmetadata` event that caused\n         *        this function to be called.\n         *\n         * @listens Player#durationchange\n         * @listens Player#timeupdate\n         * @listens Player#loadedmetadata\n         */\n        updateContent(event) {\n            const duration = this.player_.duration();\n            this.updateTextNode_(duration);\n        }\n    }\n\n    /**\n     * The text that is added to the `DurationDisplay` for screen reader users.\n     *\n     * @type {string}\n     * @private\n     */\n    DurationDisplay.prototype.labelText_ = 'Duration';\n\n    /**\n     * The text that should display over the `DurationDisplay`s controls. Added to for localization.\n     *\n     * @type {string}\n     * @protected\n     *\n     * @deprecated in v7; controlText_ is not used in non-active display Components\n     */\n    DurationDisplay.prototype.controlText_ = 'Duration';\n    Component$1.registerComponent('DurationDisplay', DurationDisplay);\n\n    /**\n     * @file time-divider.js\n     */\n\n    /**\n     * The separator between the current time and duration.\n     * Can be hidden if it's not needed in the design.\n     *\n     * @extends Component\n     */\n    class TimeDivider extends Component$1 {\n        /**\n         * Create the component's DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            const el = super.createEl('div', {\n                className: 'vjs-time-control vjs-time-divider'\n            }, {\n                // this element and its contents can be hidden from assistive techs since\n                // it is made extraneous by the announcement of the control text\n                // for the current time and duration displays\n                'aria-hidden': true\n            });\n            const div = super.createEl('div');\n            const span = super.createEl('span', {\n                textContent: '/'\n            });\n            div.appendChild(span);\n            el.appendChild(div);\n            return el;\n        }\n    }\n    Component$1.registerComponent('TimeDivider', TimeDivider);\n\n    /**\n     * @file remaining-time-display.js\n     */\n\n    /**\n     * Displays the time left in the video\n     *\n     * @extends Component\n     */\n    class RemainingTimeDisplay extends TimeDisplay {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.on(player, 'durationchange', e => this.updateContent(e));\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return 'vjs-remaining-time';\n        }\n\n        /**\n         * Create the `Component`'s DOM element with the \"minus\" character prepend to the time\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            const el = super.createEl();\n            if (this.options_.displayNegative !== false) {\n                el.insertBefore(createEl('span', {}, {\n                    'aria-hidden': true\n                }, '-'), this.contentEl_);\n            }\n            return el;\n        }\n\n        /**\n         * Update remaining time display.\n         *\n         * @param {Event} [event]\n         *        The `timeupdate` or `durationchange` event that caused this to run.\n         *\n         * @listens Player#timeupdate\n         * @listens Player#durationchange\n         */\n        updateContent(event) {\n            if (typeof this.player_.duration() !== 'number') {\n                return;\n            }\n            let time;\n\n            // @deprecated We should only use remainingTimeDisplay\n            // as of video.js 7\n            if (this.player_.ended()) {\n                time = 0;\n            } else if (this.player_.remainingTimeDisplay) {\n                time = this.player_.remainingTimeDisplay();\n            } else {\n                time = this.player_.remainingTime();\n            }\n            this.updateTextNode_(time);\n        }\n    }\n\n    /**\n     * The text that is added to the `RemainingTimeDisplay` for screen reader users.\n     *\n     * @type {string}\n     * @private\n     */\n    RemainingTimeDisplay.prototype.labelText_ = 'Remaining Time';\n\n    /**\n     * The text that should display over the `RemainingTimeDisplay`s controls. Added to for localization.\n     *\n     * @type {string}\n     * @protected\n     *\n     * @deprecated in v7; controlText_ is not used in non-active display Components\n     */\n    RemainingTimeDisplay.prototype.controlText_ = 'Remaining Time';\n    Component$1.registerComponent('RemainingTimeDisplay', RemainingTimeDisplay);\n\n    /**\n     * @file live-display.js\n     */\n\n    // TODO - Future make it click to snap to live\n\n    /**\n     * Displays the live indicator when duration is Infinity.\n     *\n     * @extends Component\n     */\n    class LiveDisplay extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.updateShowing();\n            this.on(this.player(), 'durationchange', e => this.updateShowing(e));\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            const el = super.createEl('div', {\n                className: 'vjs-live-control vjs-control'\n            });\n            this.contentEl_ = createEl('div', {\n                className: 'vjs-live-display'\n            }, {\n                'aria-live': 'off'\n            });\n            this.contentEl_.appendChild(createEl('span', {\n                className: 'vjs-control-text',\n                textContent: `${this.localize('Stream Type')}\\u00a0`\n            }));\n            this.contentEl_.appendChild(document.createTextNode(this.localize('LIVE')));\n            el.appendChild(this.contentEl_);\n            return el;\n        }\n        dispose() {\n            this.contentEl_ = null;\n            super.dispose();\n        }\n\n        /**\n         * Check the duration to see if the LiveDisplay should be showing or not. Then show/hide\n         * it accordingly\n         *\n         * @param {Event} [event]\n         *        The {@link Player#durationchange} event that caused this function to run.\n         *\n         * @listens Player#durationchange\n         */\n        updateShowing(event) {\n            if (this.player().duration() === Infinity) {\n                this.show();\n            } else {\n                this.hide();\n            }\n        }\n    }\n    Component$1.registerComponent('LiveDisplay', LiveDisplay);\n\n    /**\n     * @file seek-to-live.js\n     */\n\n    /**\n     * Displays the live indicator when duration is Infinity.\n     *\n     * @extends Component\n     */\n    class SeekToLive extends Button {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.updateLiveEdgeStatus();\n            if (this.player_.liveTracker) {\n                this.updateLiveEdgeStatusHandler_ = e => this.updateLiveEdgeStatus(e);\n                this.on(this.player_.liveTracker, 'liveedgechange', this.updateLiveEdgeStatusHandler_);\n            }\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            const el = super.createEl('button', {\n                className: 'vjs-seek-to-live-control vjs-control'\n            });\n            this.setIcon('circle', el);\n            this.textEl_ = createEl('span', {\n                className: 'vjs-seek-to-live-text',\n                textContent: this.localize('LIVE')\n            }, {\n                'aria-hidden': 'true'\n            });\n            el.appendChild(this.textEl_);\n            return el;\n        }\n\n        /**\n         * Update the state of this button if we are at the live edge\n         * or not\n         */\n        updateLiveEdgeStatus() {\n            // default to live edge\n            if (!this.player_.liveTracker || this.player_.liveTracker.atLiveEdge()) {\n                this.setAttribute('aria-disabled', true);\n                this.addClass('vjs-at-live-edge');\n                this.controlText('Seek to live, currently playing live');\n            } else {\n                this.setAttribute('aria-disabled', false);\n                this.removeClass('vjs-at-live-edge');\n                this.controlText('Seek to live, currently behind live');\n            }\n        }\n\n        /**\n         * On click bring us as near to the live point as possible.\n         * This requires that we wait for the next `live-seekable-change`\n         * event which will happen every segment length seconds.\n         */\n        handleClick() {\n            this.player_.liveTracker.seekToLiveEdge();\n        }\n\n        /**\n         * Dispose of the element and stop tracking\n         */\n        dispose() {\n            if (this.player_.liveTracker) {\n                this.off(this.player_.liveTracker, 'liveedgechange', this.updateLiveEdgeStatusHandler_);\n            }\n            this.textEl_ = null;\n            super.dispose();\n        }\n    }\n    /**\n     * The text that should display over the `SeekToLive`s control. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    SeekToLive.prototype.controlText_ = 'Seek to live, currently playing live';\n    Component$1.registerComponent('SeekToLive', SeekToLive);\n\n    /**\n     * @file num.js\n     * @module num\n     */\n\n    /**\n     * Keep a number between a min and a max value\n     *\n     * @param {number} number\n     *        The number to clamp\n     *\n     * @param {number} min\n     *        The minimum value\n     * @param {number} max\n     *        The maximum value\n     *\n     * @return {number}\n     *         the clamped number\n     */\n    function clamp(number, min, max) {\n        number = Number(number);\n        return Math.min(max, Math.max(min, isNaN(number) ? min : number));\n    }\n\n    var Num = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        clamp: clamp\n    });\n\n    /**\n     * @file slider.js\n     */\n\n    /**\n     * The base functionality for a slider. Can be vertical or horizontal.\n     * For instance the volume bar or the seek bar on a video is a slider.\n     *\n     * @extends Component\n     */\n    class Slider extends Component$1 {\n        /**\n         * Create an instance of this class\n         *\n         * @param { import('../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.handleMouseDown_ = e => this.handleMouseDown(e);\n            this.handleMouseUp_ = e => this.handleMouseUp(e);\n            this.handleKeyDown_ = e => this.handleKeyDown(e);\n            this.handleClick_ = e => this.handleClick(e);\n            this.handleMouseMove_ = e => this.handleMouseMove(e);\n            this.update_ = e => this.update(e);\n\n            // Set property names to bar to match with the child Slider class is looking for\n            this.bar = this.getChild(this.options_.barName);\n\n            // Set a horizontal or vertical class on the slider depending on the slider type\n            this.vertical(!!this.options_.vertical);\n            this.enable();\n        }\n\n        /**\n         * Are controls are currently enabled for this slider or not.\n         *\n         * @return {boolean}\n         *         true if controls are enabled, false otherwise\n         */\n        enabled() {\n            return this.enabled_;\n        }\n\n        /**\n         * Enable controls for this slider if they are disabled\n         */\n        enable() {\n            if (this.enabled()) {\n                return;\n            }\n            this.on('mousedown', this.handleMouseDown_);\n            this.on('touchstart', this.handleMouseDown_);\n            this.on('keydown', this.handleKeyDown_);\n            this.on('click', this.handleClick_);\n\n            // TODO: deprecated, controlsvisible does not seem to be fired\n            this.on(this.player_, 'controlsvisible', this.update);\n            if (this.playerEvent) {\n                this.on(this.player_, this.playerEvent, this.update);\n            }\n            this.removeClass('disabled');\n            this.setAttribute('tabindex', 0);\n            this.enabled_ = true;\n        }\n\n        /**\n         * Disable controls for this slider if they are enabled\n         */\n        disable() {\n            if (!this.enabled()) {\n                return;\n            }\n            const doc = this.bar.el_.ownerDocument;\n            this.off('mousedown', this.handleMouseDown_);\n            this.off('touchstart', this.handleMouseDown_);\n            this.off('keydown', this.handleKeyDown_);\n            this.off('click', this.handleClick_);\n            this.off(this.player_, 'controlsvisible', this.update_);\n            this.off(doc, 'mousemove', this.handleMouseMove_);\n            this.off(doc, 'mouseup', this.handleMouseUp_);\n            this.off(doc, 'touchmove', this.handleMouseMove_);\n            this.off(doc, 'touchend', this.handleMouseUp_);\n            this.removeAttribute('tabindex');\n            this.addClass('disabled');\n            if (this.playerEvent) {\n                this.off(this.player_, this.playerEvent, this.update);\n            }\n            this.enabled_ = false;\n        }\n\n        /**\n         * Create the `Slider`s DOM element.\n         *\n         * @param {string} type\n         *        Type of element to create.\n         *\n         * @param {Object} [props={}]\n         *        List of properties in Object form.\n         *\n         * @param {Object} [attributes={}]\n         *        list of attributes in Object form.\n         *\n         * @return {Element}\n         *         The element that gets created.\n         */\n        createEl(type, props = {}, attributes = {}) {\n            // Add the slider element class to all sub classes\n            props.className = props.className + ' vjs-slider';\n            props = Object.assign({\n                tabIndex: 0\n            }, props);\n            attributes = Object.assign({\n                'role': 'slider',\n                'aria-valuenow': 0,\n                'aria-valuemin': 0,\n                'aria-valuemax': 100\n            }, attributes);\n            return super.createEl(type, props, attributes);\n        }\n\n        /**\n         * Handle `mousedown` or `touchstart` events on the `Slider`.\n         *\n         * @param {MouseEvent} event\n         *        `mousedown` or `touchstart` event that triggered this function\n         *\n         * @listens mousedown\n         * @listens touchstart\n         * @fires Slider#slideractive\n         */\n        handleMouseDown(event) {\n            const doc = this.bar.el_.ownerDocument;\n            if (event.type === 'mousedown') {\n                event.preventDefault();\n            }\n            // Do not call preventDefault() on touchstart in Chrome\n            // to avoid console warnings. Use a 'touch-action: none' style\n            // instead to prevent unintended scrolling.\n            // https://developers.google.com/web/updates/2017/01/scrolling-intervention\n            if (event.type === 'touchstart' && !IS_CHROME) {\n                event.preventDefault();\n            }\n            blockTextSelection();\n            this.addClass('vjs-sliding');\n            /**\n             * Triggered when the slider is in an active state\n             *\n             * @event Slider#slideractive\n             * @type {MouseEvent}\n             */\n            this.trigger('slideractive');\n            this.on(doc, 'mousemove', this.handleMouseMove_);\n            this.on(doc, 'mouseup', this.handleMouseUp_);\n            this.on(doc, 'touchmove', this.handleMouseMove_);\n            this.on(doc, 'touchend', this.handleMouseUp_);\n            this.handleMouseMove(event, true);\n        }\n\n        /**\n         * Handle the `mousemove`, `touchmove`, and `mousedown` events on this `Slider`.\n         * The `mousemove` and `touchmove` events will only only trigger this function during\n         * `mousedown` and `touchstart`. This is due to {@link Slider#handleMouseDown} and\n         * {@link Slider#handleMouseUp}.\n         *\n         * @param {MouseEvent} event\n         *        `mousedown`, `mousemove`, `touchstart`, or `touchmove` event that triggered\n         *        this function\n         * @param {boolean} mouseDown this is a flag that should be set to true if `handleMouseMove` is called directly. It allows us to skip things that should not happen if coming from mouse down but should happen on regular mouse move handler. Defaults to false.\n         *\n         * @listens mousemove\n         * @listens touchmove\n         */\n        handleMouseMove(event) {}\n\n        /**\n         * Handle `mouseup` or `touchend` events on the `Slider`.\n         *\n         * @param {MouseEvent} event\n         *        `mouseup` or `touchend` event that triggered this function.\n         *\n         * @listens touchend\n         * @listens mouseup\n         * @fires Slider#sliderinactive\n         */\n        handleMouseUp(event) {\n            const doc = this.bar.el_.ownerDocument;\n            unblockTextSelection();\n            this.removeClass('vjs-sliding');\n            /**\n             * Triggered when the slider is no longer in an active state.\n             *\n             * @event Slider#sliderinactive\n             * @type {Event}\n             */\n            this.trigger('sliderinactive');\n            this.off(doc, 'mousemove', this.handleMouseMove_);\n            this.off(doc, 'mouseup', this.handleMouseUp_);\n            this.off(doc, 'touchmove', this.handleMouseMove_);\n            this.off(doc, 'touchend', this.handleMouseUp_);\n            this.update();\n        }\n\n        /**\n         * Update the progress bar of the `Slider`.\n         *\n         * @return {number}\n         *          The percentage of progress the progress bar represents as a\n         *          number from 0 to 1.\n         */\n        update() {\n            // In VolumeBar init we have a setTimeout for update that pops and update\n            // to the end of the execution stack. The player is destroyed before then\n            // update will cause an error\n            // If there's no bar...\n            if (!this.el_ || !this.bar) {\n                return;\n            }\n\n            // clamp progress between 0 and 1\n            // and only round to four decimal places, as we round to two below\n            const progress = this.getProgress();\n            if (progress === this.progress_) {\n                return progress;\n            }\n            this.progress_ = progress;\n            this.requestNamedAnimationFrame('Slider#update', () => {\n                // Set the new bar width or height\n                const sizeKey = this.vertical() ? 'height' : 'width';\n\n                // Convert to a percentage for css value\n                this.bar.el().style[sizeKey] = (progress * 100).toFixed(2) + '%';\n            });\n            return progress;\n        }\n\n        /**\n         * Get the percentage of the bar that should be filled\n         * but clamped and rounded.\n         *\n         * @return {number}\n         *         percentage filled that the slider is\n         */\n        getProgress() {\n            return Number(clamp(this.getPercent(), 0, 1).toFixed(4));\n        }\n\n        /**\n         * Calculate distance for slider\n         *\n         * @param {Event} event\n         *        The event that caused this function to run.\n         *\n         * @return {number}\n         *         The current position of the Slider.\n         *         - position.x for vertical `Slider`s\n         *         - position.y for horizontal `Slider`s\n         */\n        calculateDistance(event) {\n            const position = getPointerPosition(this.el_, event);\n            if (this.vertical()) {\n                return position.y;\n            }\n            return position.x;\n        }\n\n        /**\n         * Handle a `keydown` event on the `Slider`. Watches for left, right, up, and down\n         * arrow keys. This function will only be called when the slider has focus. See\n         * {@link Slider#handleFocus} and {@link Slider#handleBlur}.\n         *\n         * @param {KeyboardEvent} event\n         *        the `keydown` event that caused this function to run.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            // Left and Down Arrows\n            if (keycode.isEventKey(event, 'Left') || keycode.isEventKey(event, 'Down')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.stepBack();\n\n                // Up and Right Arrows\n            } else if (keycode.isEventKey(event, 'Right') || keycode.isEventKey(event, 'Up')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.stepForward();\n            } else {\n                // Pass keydown handling up for unsupported keys\n                super.handleKeyDown(event);\n            }\n        }\n\n        /**\n         * Listener for click events on slider, used to prevent clicks\n         *   from bubbling up to parent elements like button menus.\n         *\n         * @param {Object} event\n         *        Event that caused this object to run\n         */\n        handleClick(event) {\n            event.stopPropagation();\n            event.preventDefault();\n        }\n\n        /**\n         * Get/set if slider is horizontal for vertical\n         *\n         * @param {boolean} [bool]\n         *        - true if slider is vertical,\n         *        - false is horizontal\n         *\n         * @return {boolean}\n         *         - true if slider is vertical, and getting\n         *         - false if the slider is horizontal, and getting\n         */\n        vertical(bool) {\n            if (bool === undefined) {\n                return this.vertical_ || false;\n            }\n            this.vertical_ = !!bool;\n            if (this.vertical_) {\n                this.addClass('vjs-slider-vertical');\n            } else {\n                this.addClass('vjs-slider-horizontal');\n            }\n        }\n    }\n    Component$1.registerComponent('Slider', Slider);\n\n    /**\n     * @file load-progress-bar.js\n     */\n\n        // get the percent width of a time compared to the total end\n    const percentify = (time, end) => clamp(time / end * 100, 0, 100).toFixed(2) + '%';\n\n    /**\n     * Shows loading progress\n     *\n     * @extends Component\n     */\n    class LoadProgressBar extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.partEls_ = [];\n            this.on(player, 'progress', e => this.update(e));\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            const el = super.createEl('div', {\n                className: 'vjs-load-progress'\n            });\n            const wrapper = createEl('span', {\n                className: 'vjs-control-text'\n            });\n            const loadedText = createEl('span', {\n                textContent: this.localize('Loaded')\n            });\n            const separator = document.createTextNode(': ');\n            this.percentageEl_ = createEl('span', {\n                className: 'vjs-control-text-loaded-percentage',\n                textContent: '0%'\n            });\n            el.appendChild(wrapper);\n            wrapper.appendChild(loadedText);\n            wrapper.appendChild(separator);\n            wrapper.appendChild(this.percentageEl_);\n            return el;\n        }\n        dispose() {\n            this.partEls_ = null;\n            this.percentageEl_ = null;\n            super.dispose();\n        }\n\n        /**\n         * Update progress bar\n         *\n         * @param {Event} [event]\n         *        The `progress` event that caused this function to run.\n         *\n         * @listens Player#progress\n         */\n        update(event) {\n            this.requestNamedAnimationFrame('LoadProgressBar#update', () => {\n                const liveTracker = this.player_.liveTracker;\n                const buffered = this.player_.buffered();\n                const duration = liveTracker && liveTracker.isLive() ? liveTracker.seekableEnd() : this.player_.duration();\n                const bufferedEnd = this.player_.bufferedEnd();\n                const children = this.partEls_;\n                const percent = percentify(bufferedEnd, duration);\n                if (this.percent_ !== percent) {\n                    // update the width of the progress bar\n                    this.el_.style.width = percent;\n                    // update the control-text\n                    textContent(this.percentageEl_, percent);\n                    this.percent_ = percent;\n                }\n\n                // add child elements to represent the individual buffered time ranges\n                for (let i = 0; i < buffered.length; i++) {\n                    const start = buffered.start(i);\n                    const end = buffered.end(i);\n                    let part = children[i];\n                    if (!part) {\n                        part = this.el_.appendChild(createEl());\n                        children[i] = part;\n                    }\n\n                    //  only update if changed\n                    if (part.dataset.start === start && part.dataset.end === end) {\n                        continue;\n                    }\n                    part.dataset.start = start;\n                    part.dataset.end = end;\n\n                    // set the percent based on the width of the progress bar (bufferedEnd)\n                    part.style.left = percentify(start, bufferedEnd);\n                    part.style.width = percentify(end - start, bufferedEnd);\n                }\n\n                // remove unused buffered range elements\n                for (let i = children.length; i > buffered.length; i--) {\n                    this.el_.removeChild(children[i - 1]);\n                }\n                children.length = buffered.length;\n            });\n        }\n    }\n    Component$1.registerComponent('LoadProgressBar', LoadProgressBar);\n\n    /**\n     * @file time-tooltip.js\n     */\n\n    /**\n     * Time tooltips display a time above the progress bar.\n     *\n     * @extends Component\n     */\n    class TimeTooltip extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The {@link Player} that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);\n        }\n\n        /**\n         * Create the time tooltip DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-time-tooltip'\n            }, {\n                'aria-hidden': 'true'\n            });\n        }\n\n        /**\n         * Updates the position of the time tooltip relative to the `SeekBar`.\n         *\n         * @param {Object} seekBarRect\n         *        The `ClientRect` for the {@link SeekBar} element.\n         *\n         * @param {number} seekBarPoint\n         *        A number from 0 to 1, representing a horizontal reference point\n         *        from the left edge of the {@link SeekBar}\n         */\n        update(seekBarRect, seekBarPoint, content) {\n            const tooltipRect = findPosition(this.el_);\n            const playerRect = getBoundingClientRect(this.player_.el());\n            const seekBarPointPx = seekBarRect.width * seekBarPoint;\n\n            // do nothing if either rect isn't available\n            // for example, if the player isn't in the DOM for testing\n            if (!playerRect || !tooltipRect) {\n                return;\n            }\n\n            // This is the space left of the `seekBarPoint` available within the bounds\n            // of the player. We calculate any gap between the left edge of the player\n            // and the left edge of the `SeekBar` and add the number of pixels in the\n            // `SeekBar` before hitting the `seekBarPoint`\n            const spaceLeftOfPoint = seekBarRect.left - playerRect.left + seekBarPointPx;\n\n            // This is the space right of the `seekBarPoint` available within the bounds\n            // of the player. We calculate the number of pixels from the `seekBarPoint`\n            // to the right edge of the `SeekBar` and add to that any gap between the\n            // right edge of the `SeekBar` and the player.\n            const spaceRightOfPoint = seekBarRect.width - seekBarPointPx + (playerRect.right - seekBarRect.right);\n\n            // This is the number of pixels by which the tooltip will need to be pulled\n            // further to the right to center it over the `seekBarPoint`.\n            let pullTooltipBy = tooltipRect.width / 2;\n\n            // Adjust the `pullTooltipBy` distance to the left or right depending on\n            // the results of the space calculations above.\n            if (spaceLeftOfPoint < pullTooltipBy) {\n                pullTooltipBy += pullTooltipBy - spaceLeftOfPoint;\n            } else if (spaceRightOfPoint < pullTooltipBy) {\n                pullTooltipBy = spaceRightOfPoint;\n            }\n\n            // Due to the imprecision of decimal/ratio based calculations and varying\n            // rounding behaviors, there are cases where the spacing adjustment is off\n            // by a pixel or two. This adds insurance to these calculations.\n            if (pullTooltipBy < 0) {\n                pullTooltipBy = 0;\n            } else if (pullTooltipBy > tooltipRect.width) {\n                pullTooltipBy = tooltipRect.width;\n            }\n\n            // prevent small width fluctuations within 0.4px from\n            // changing the value below.\n            // This really helps for live to prevent the play\n            // progress time tooltip from jittering\n            pullTooltipBy = Math.round(pullTooltipBy);\n            this.el_.style.right = `-${pullTooltipBy}px`;\n            this.write(content);\n        }\n\n        /**\n         * Write the time to the tooltip DOM element.\n         *\n         * @param {string} content\n         *        The formatted time for the tooltip.\n         */\n        write(content) {\n            textContent(this.el_, content);\n        }\n\n        /**\n         * Updates the position of the time tooltip relative to the `SeekBar`.\n         *\n         * @param {Object} seekBarRect\n         *        The `ClientRect` for the {@link SeekBar} element.\n         *\n         * @param {number} seekBarPoint\n         *        A number from 0 to 1, representing a horizontal reference point\n         *        from the left edge of the {@link SeekBar}\n         *\n         * @param {number} time\n         *        The time to update the tooltip to, not used during live playback\n         *\n         * @param {Function} cb\n         *        A function that will be called during the request animation frame\n         *        for tooltips that need to do additional animations from the default\n         */\n        updateTime(seekBarRect, seekBarPoint, time, cb) {\n            this.requestNamedAnimationFrame('TimeTooltip#updateTime', () => {\n                let content;\n                const duration = this.player_.duration();\n                if (this.player_.liveTracker && this.player_.liveTracker.isLive()) {\n                    const liveWindow = this.player_.liveTracker.liveWindow();\n                    const secondsBehind = liveWindow - seekBarPoint * liveWindow;\n                    content = (secondsBehind < 1 ? '' : '-') + formatTime(secondsBehind, liveWindow);\n                } else {\n                    content = formatTime(time, duration);\n                }\n                this.update(seekBarRect, seekBarPoint, content);\n                if (cb) {\n                    cb();\n                }\n            });\n        }\n    }\n    Component$1.registerComponent('TimeTooltip', TimeTooltip);\n\n    /**\n     * @file play-progress-bar.js\n     */\n\n    /**\n     * Used by {@link SeekBar} to display media playback progress as part of the\n     * {@link ProgressControl}.\n     *\n     * @extends Component\n     */\n    class PlayProgressBar extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The {@link Player} that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.setIcon('circle');\n            this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);\n        }\n\n        /**\n         * Create the the DOM element for this class.\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-play-progress vjs-slider-bar'\n            }, {\n                'aria-hidden': 'true'\n            });\n        }\n\n        /**\n         * Enqueues updates to its own DOM as well as the DOM of its\n         * {@link TimeTooltip} child.\n         *\n         * @param {Object} seekBarRect\n         *        The `ClientRect` for the {@link SeekBar} element.\n         *\n         * @param {number} seekBarPoint\n         *        A number from 0 to 1, representing a horizontal reference point\n         *        from the left edge of the {@link SeekBar}\n         */\n        update(seekBarRect, seekBarPoint) {\n            const timeTooltip = this.getChild('timeTooltip');\n            if (!timeTooltip) {\n                return;\n            }\n            const time = this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();\n            timeTooltip.updateTime(seekBarRect, seekBarPoint, time);\n        }\n    }\n\n    /**\n     * Default options for {@link PlayProgressBar}.\n     *\n     * @type {Object}\n     * @private\n     */\n    PlayProgressBar.prototype.options_ = {\n        children: []\n    };\n\n    // Time tooltips should not be added to a player on mobile devices\n    if (!IS_IOS && !IS_ANDROID) {\n        PlayProgressBar.prototype.options_.children.push('timeTooltip');\n    }\n    Component$1.registerComponent('PlayProgressBar', PlayProgressBar);\n\n    /**\n     * @file mouse-time-display.js\n     */\n\n    /**\n     * The {@link MouseTimeDisplay} component tracks mouse movement over the\n     * {@link ProgressControl}. It displays an indicator and a {@link TimeTooltip}\n     * indicating the time which is represented by a given point in the\n     * {@link ProgressControl}.\n     *\n     * @extends Component\n     */\n    class MouseTimeDisplay extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The {@link Player} that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);\n        }\n\n        /**\n         * Create the DOM element for this class.\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-mouse-display'\n            });\n        }\n\n        /**\n         * Enqueues updates to its own DOM as well as the DOM of its\n         * {@link TimeTooltip} child.\n         *\n         * @param {Object} seekBarRect\n         *        The `ClientRect` for the {@link SeekBar} element.\n         *\n         * @param {number} seekBarPoint\n         *        A number from 0 to 1, representing a horizontal reference point\n         *        from the left edge of the {@link SeekBar}\n         */\n        update(seekBarRect, seekBarPoint) {\n            const time = seekBarPoint * this.player_.duration();\n            this.getChild('timeTooltip').updateTime(seekBarRect, seekBarPoint, time, () => {\n                this.el_.style.left = `${seekBarRect.width * seekBarPoint}px`;\n            });\n        }\n    }\n\n    /**\n     * Default options for `MouseTimeDisplay`\n     *\n     * @type {Object}\n     * @private\n     */\n    MouseTimeDisplay.prototype.options_ = {\n        children: ['timeTooltip']\n    };\n    Component$1.registerComponent('MouseTimeDisplay', MouseTimeDisplay);\n\n    /**\n     * @file seek-bar.js\n     */\n\n        // The number of seconds the `step*` functions move the timeline.\n    const STEP_SECONDS = 5;\n\n    // The multiplier of STEP_SECONDS that PgUp/PgDown move the timeline.\n    const PAGE_KEY_MULTIPLIER = 12;\n\n    /**\n     * Seek bar and container for the progress bars. Uses {@link PlayProgressBar}\n     * as its `bar`.\n     *\n     * @extends Slider\n     */\n    class SeekBar extends Slider {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.setEventHandlers_();\n        }\n\n        /**\n         * Sets the event handlers\n         *\n         * @private\n         */\n        setEventHandlers_() {\n            this.update_ = bind_(this, this.update);\n            this.update = throttle(this.update_, UPDATE_REFRESH_INTERVAL);\n            this.on(this.player_, ['ended', 'durationchange', 'timeupdate'], this.update);\n            if (this.player_.liveTracker) {\n                this.on(this.player_.liveTracker, 'liveedgechange', this.update);\n            }\n\n            // when playing, let's ensure we smoothly update the play progress bar\n            // via an interval\n            this.updateInterval = null;\n            this.enableIntervalHandler_ = e => this.enableInterval_(e);\n            this.disableIntervalHandler_ = e => this.disableInterval_(e);\n            this.on(this.player_, ['playing'], this.enableIntervalHandler_);\n            this.on(this.player_, ['ended', 'pause', 'waiting'], this.disableIntervalHandler_);\n\n            // we don't need to update the play progress if the document is hidden,\n            // also, this causes the CPU to spike and eventually crash the page on IE11.\n            if ('hidden' in document && 'visibilityState' in document) {\n                this.on(document, 'visibilitychange', this.toggleVisibility_);\n            }\n        }\n        toggleVisibility_(e) {\n            if (document.visibilityState === 'hidden') {\n                this.cancelNamedAnimationFrame('SeekBar#update');\n                this.cancelNamedAnimationFrame('Slider#update');\n                this.disableInterval_(e);\n            } else {\n                if (!this.player_.ended() && !this.player_.paused()) {\n                    this.enableInterval_();\n                }\n\n                // we just switched back to the page and someone may be looking, so, update ASAP\n                this.update();\n            }\n        }\n        enableInterval_() {\n            if (this.updateInterval) {\n                return;\n            }\n            this.updateInterval = this.setInterval(this.update, UPDATE_REFRESH_INTERVAL);\n        }\n        disableInterval_(e) {\n            if (this.player_.liveTracker && this.player_.liveTracker.isLive() && e && e.type !== 'ended') {\n                return;\n            }\n            if (!this.updateInterval) {\n                return;\n            }\n            this.clearInterval(this.updateInterval);\n            this.updateInterval = null;\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-progress-holder'\n            }, {\n                'aria-label': this.localize('Progress Bar')\n            });\n        }\n\n        /**\n         * This function updates the play progress bar and accessibility\n         * attributes to whatever is passed in.\n         *\n         * @param {Event} [event]\n         *        The `timeupdate` or `ended` event that caused this to run.\n         *\n         * @listens Player#timeupdate\n         *\n         * @return {number}\n         *          The current percent at a number from 0-1\n         */\n        update(event) {\n            // ignore updates while the tab is hidden\n            if (document.visibilityState === 'hidden') {\n                return;\n            }\n            const percent = super.update();\n            this.requestNamedAnimationFrame('SeekBar#update', () => {\n                const currentTime = this.player_.ended() ? this.player_.duration() : this.getCurrentTime_();\n                const liveTracker = this.player_.liveTracker;\n                let duration = this.player_.duration();\n                if (liveTracker && liveTracker.isLive()) {\n                    duration = this.player_.liveTracker.liveCurrentTime();\n                }\n                if (this.percent_ !== percent) {\n                    // machine readable value of progress bar (percentage complete)\n                    this.el_.setAttribute('aria-valuenow', (percent * 100).toFixed(2));\n                    this.percent_ = percent;\n                }\n                if (this.currentTime_ !== currentTime || this.duration_ !== duration) {\n                    // human readable value of progress bar (time complete)\n                    this.el_.setAttribute('aria-valuetext', this.localize('progress bar timing: currentTime={1} duration={2}', [formatTime(currentTime, duration), formatTime(duration, duration)], '{1} of {2}'));\n                    this.currentTime_ = currentTime;\n                    this.duration_ = duration;\n                }\n\n                // update the progress bar time tooltip with the current time\n                if (this.bar) {\n                    this.bar.update(getBoundingClientRect(this.el()), this.getProgress());\n                }\n            });\n            return percent;\n        }\n\n        /**\n         * Prevent liveThreshold from causing seeks to seem like they\n         * are not happening from a user perspective.\n         *\n         * @param {number} ct\n         *        current time to seek to\n         */\n        userSeek_(ct) {\n            if (this.player_.liveTracker && this.player_.liveTracker.isLive()) {\n                this.player_.liveTracker.nextSeekedFromUser();\n            }\n            this.player_.currentTime(ct);\n        }\n\n        /**\n         * Get the value of current time but allows for smooth scrubbing,\n         * when player can't keep up.\n         *\n         * @return {number}\n         *         The current time value to display\n         *\n         * @private\n         */\n        getCurrentTime_() {\n            return this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();\n        }\n\n        /**\n         * Get the percentage of media played so far.\n         *\n         * @return {number}\n         *         The percentage of media played so far (0 to 1).\n         */\n        getPercent() {\n            const currentTime = this.getCurrentTime_();\n            let percent;\n            const liveTracker = this.player_.liveTracker;\n            if (liveTracker && liveTracker.isLive()) {\n                percent = (currentTime - liveTracker.seekableStart()) / liveTracker.liveWindow();\n\n                // prevent the percent from changing at the live edge\n                if (liveTracker.atLiveEdge()) {\n                    percent = 1;\n                }\n            } else {\n                percent = currentTime / this.player_.duration();\n            }\n            return percent;\n        }\n\n        /**\n         * Handle mouse down on seek bar\n         *\n         * @param {MouseEvent} event\n         *        The `mousedown` event that caused this to run.\n         *\n         * @listens mousedown\n         */\n        handleMouseDown(event) {\n            if (!isSingleLeftClick(event)) {\n                return;\n            }\n\n            // Stop event propagation to prevent double fire in progress-control.js\n            event.stopPropagation();\n            this.videoWasPlaying = !this.player_.paused();\n            this.player_.pause();\n            super.handleMouseDown(event);\n        }\n\n        /**\n         * Handle mouse move on seek bar\n         *\n         * @param {MouseEvent} event\n         *        The `mousemove` event that caused this to run.\n         * @param {boolean} mouseDown this is a flag that should be set to true if `handleMouseMove` is called directly. It allows us to skip things that should not happen if coming from mouse down but should happen on regular mouse move handler. Defaults to false\n         *\n         * @listens mousemove\n         */\n        handleMouseMove(event, mouseDown = false) {\n            if (!isSingleLeftClick(event) || isNaN(this.player_.duration())) {\n                return;\n            }\n            if (!mouseDown && !this.player_.scrubbing()) {\n                this.player_.scrubbing(true);\n            }\n            let newTime;\n            const distance = this.calculateDistance(event);\n            const liveTracker = this.player_.liveTracker;\n            if (!liveTracker || !liveTracker.isLive()) {\n                newTime = distance * this.player_.duration();\n\n                // Don't let video end while scrubbing.\n                if (newTime === this.player_.duration()) {\n                    newTime = newTime - 0.1;\n                }\n            } else {\n                if (distance >= 0.99) {\n                    liveTracker.seekToLiveEdge();\n                    return;\n                }\n                const seekableStart = liveTracker.seekableStart();\n                const seekableEnd = liveTracker.liveCurrentTime();\n                newTime = seekableStart + distance * liveTracker.liveWindow();\n\n                // Don't let video end while scrubbing.\n                if (newTime >= seekableEnd) {\n                    newTime = seekableEnd;\n                }\n\n                // Compensate for precision differences so that currentTime is not less\n                // than seekable start\n                if (newTime <= seekableStart) {\n                    newTime = seekableStart + 0.1;\n                }\n\n                // On android seekableEnd can be Infinity sometimes,\n                // this will cause newTime to be Infinity, which is\n                // not a valid currentTime.\n                if (newTime === Infinity) {\n                    return;\n                }\n            }\n\n            // Set new time (tell player to seek to new time)\n            this.userSeek_(newTime);\n            if (this.player_.options_.enableSmoothSeeking) {\n                this.update();\n            }\n        }\n        enable() {\n            super.enable();\n            const mouseTimeDisplay = this.getChild('mouseTimeDisplay');\n            if (!mouseTimeDisplay) {\n                return;\n            }\n            mouseTimeDisplay.show();\n        }\n        disable() {\n            super.disable();\n            const mouseTimeDisplay = this.getChild('mouseTimeDisplay');\n            if (!mouseTimeDisplay) {\n                return;\n            }\n            mouseTimeDisplay.hide();\n        }\n\n        /**\n         * Handle mouse up on seek bar\n         *\n         * @param {MouseEvent} event\n         *        The `mouseup` event that caused this to run.\n         *\n         * @listens mouseup\n         */\n        handleMouseUp(event) {\n            super.handleMouseUp(event);\n\n            // Stop event propagation to prevent double fire in progress-control.js\n            if (event) {\n                event.stopPropagation();\n            }\n            this.player_.scrubbing(false);\n\n            /**\n             * Trigger timeupdate because we're done seeking and the time has changed.\n             * This is particularly useful for if the player is paused to time the time displays.\n             *\n             * @event Tech#timeupdate\n             * @type {Event}\n             */\n            this.player_.trigger({\n                type: 'timeupdate',\n                target: this,\n                manuallyTriggered: true\n            });\n            if (this.videoWasPlaying) {\n                silencePromise(this.player_.play());\n            } else {\n                // We're done seeking and the time has changed.\n                // If the player is paused, make sure we display the correct time on the seek bar.\n                this.update_();\n            }\n        }\n\n        /**\n         * Move more quickly fast forward for keyboard-only users\n         */\n        stepForward() {\n            this.userSeek_(this.player_.currentTime() + STEP_SECONDS);\n        }\n\n        /**\n         * Move more quickly rewind for keyboard-only users\n         */\n        stepBack() {\n            this.userSeek_(this.player_.currentTime() - STEP_SECONDS);\n        }\n\n        /**\n         * Toggles the playback state of the player\n         * This gets called when enter or space is used on the seekbar\n         *\n         * @param {KeyboardEvent} event\n         *        The `keydown` event that caused this function to be called\n         *\n         */\n        handleAction(event) {\n            if (this.player_.paused()) {\n                this.player_.play();\n            } else {\n                this.player_.pause();\n            }\n        }\n\n        /**\n         * Called when this SeekBar has focus and a key gets pressed down.\n         * Supports the following keys:\n         *\n         *   Space or Enter key fire a click event\n         *   Home key moves to start of the timeline\n         *   End key moves to end of the timeline\n         *   Digit \"0\" through \"9\" keys move to 0%, 10% ... 80%, 90% of the timeline\n         *   PageDown key moves back a larger step than ArrowDown\n         *   PageUp key moves forward a large step\n         *\n         * @param {KeyboardEvent} event\n         *        The `keydown` event that caused this function to be called.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            const liveTracker = this.player_.liveTracker;\n            if (keycode.isEventKey(event, 'Space') || keycode.isEventKey(event, 'Enter')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.handleAction(event);\n            } else if (keycode.isEventKey(event, 'Home')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.userSeek_(0);\n            } else if (keycode.isEventKey(event, 'End')) {\n                event.preventDefault();\n                event.stopPropagation();\n                if (liveTracker && liveTracker.isLive()) {\n                    this.userSeek_(liveTracker.liveCurrentTime());\n                } else {\n                    this.userSeek_(this.player_.duration());\n                }\n            } else if (/^[0-9]$/.test(keycode(event))) {\n                event.preventDefault();\n                event.stopPropagation();\n                const gotoFraction = (keycode.codes[keycode(event)] - keycode.codes['0']) * 10.0 / 100.0;\n                if (liveTracker && liveTracker.isLive()) {\n                    this.userSeek_(liveTracker.seekableStart() + liveTracker.liveWindow() * gotoFraction);\n                } else {\n                    this.userSeek_(this.player_.duration() * gotoFraction);\n                }\n            } else if (keycode.isEventKey(event, 'PgDn')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.userSeek_(this.player_.currentTime() - STEP_SECONDS * PAGE_KEY_MULTIPLIER);\n            } else if (keycode.isEventKey(event, 'PgUp')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.userSeek_(this.player_.currentTime() + STEP_SECONDS * PAGE_KEY_MULTIPLIER);\n            } else {\n                // Pass keydown handling up for unsupported keys\n                super.handleKeyDown(event);\n            }\n        }\n        dispose() {\n            this.disableInterval_();\n            this.off(this.player_, ['ended', 'durationchange', 'timeupdate'], this.update);\n            if (this.player_.liveTracker) {\n                this.off(this.player_.liveTracker, 'liveedgechange', this.update);\n            }\n            this.off(this.player_, ['playing'], this.enableIntervalHandler_);\n            this.off(this.player_, ['ended', 'pause', 'waiting'], this.disableIntervalHandler_);\n\n            // we don't need to update the play progress if the document is hidden,\n            // also, this causes the CPU to spike and eventually crash the page on IE11.\n            if ('hidden' in document && 'visibilityState' in document) {\n                this.off(document, 'visibilitychange', this.toggleVisibility_);\n            }\n            super.dispose();\n        }\n    }\n\n    /**\n     * Default options for the `SeekBar`\n     *\n     * @type {Object}\n     * @private\n     */\n    SeekBar.prototype.options_ = {\n        children: ['loadProgressBar', 'playProgressBar'],\n        barName: 'playProgressBar'\n    };\n\n    // MouseTimeDisplay tooltips should not be added to a player on mobile devices\n    if (!IS_IOS && !IS_ANDROID) {\n        SeekBar.prototype.options_.children.splice(1, 0, 'mouseTimeDisplay');\n    }\n    Component$1.registerComponent('SeekBar', SeekBar);\n\n    /**\n     * @file progress-control.js\n     */\n\n    /**\n     * The Progress Control component contains the seek bar, load progress,\n     * and play progress.\n     *\n     * @extends Component\n     */\n    class ProgressControl extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.handleMouseMove = throttle(bind_(this, this.handleMouseMove), UPDATE_REFRESH_INTERVAL);\n            this.throttledHandleMouseSeek = throttle(bind_(this, this.handleMouseSeek), UPDATE_REFRESH_INTERVAL);\n            this.handleMouseUpHandler_ = e => this.handleMouseUp(e);\n            this.handleMouseDownHandler_ = e => this.handleMouseDown(e);\n            this.enable();\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-progress-control vjs-control'\n            });\n        }\n\n        /**\n         * When the mouse moves over the `ProgressControl`, the pointer position\n         * gets passed down to the `MouseTimeDisplay` component.\n         *\n         * @param {Event} event\n         *        The `mousemove` event that caused this function to run.\n         *\n         * @listen mousemove\n         */\n        handleMouseMove(event) {\n            const seekBar = this.getChild('seekBar');\n            if (!seekBar) {\n                return;\n            }\n            const playProgressBar = seekBar.getChild('playProgressBar');\n            const mouseTimeDisplay = seekBar.getChild('mouseTimeDisplay');\n            if (!playProgressBar && !mouseTimeDisplay) {\n                return;\n            }\n            const seekBarEl = seekBar.el();\n            const seekBarRect = findPosition(seekBarEl);\n            let seekBarPoint = getPointerPosition(seekBarEl, event).x;\n\n            // The default skin has a gap on either side of the `SeekBar`. This means\n            // that it's possible to trigger this behavior outside the boundaries of\n            // the `SeekBar`. This ensures we stay within it at all times.\n            seekBarPoint = clamp(seekBarPoint, 0, 1);\n            if (mouseTimeDisplay) {\n                mouseTimeDisplay.update(seekBarRect, seekBarPoint);\n            }\n            if (playProgressBar) {\n                playProgressBar.update(seekBarRect, seekBar.getProgress());\n            }\n        }\n\n        /**\n         * A throttled version of the {@link ProgressControl#handleMouseSeek} listener.\n         *\n         * @method ProgressControl#throttledHandleMouseSeek\n         * @param {Event} event\n         *        The `mousemove` event that caused this function to run.\n         *\n         * @listen mousemove\n         * @listen touchmove\n         */\n\n        /**\n         * Handle `mousemove` or `touchmove` events on the `ProgressControl`.\n         *\n         * @param {Event} event\n         *        `mousedown` or `touchstart` event that triggered this function\n         *\n         * @listens mousemove\n         * @listens touchmove\n         */\n        handleMouseSeek(event) {\n            const seekBar = this.getChild('seekBar');\n            if (seekBar) {\n                seekBar.handleMouseMove(event);\n            }\n        }\n\n        /**\n         * Are controls are currently enabled for this progress control.\n         *\n         * @return {boolean}\n         *         true if controls are enabled, false otherwise\n         */\n        enabled() {\n            return this.enabled_;\n        }\n\n        /**\n         * Disable all controls on the progress control and its children\n         */\n        disable() {\n            this.children().forEach(child => child.disable && child.disable());\n            if (!this.enabled()) {\n                return;\n            }\n            this.off(['mousedown', 'touchstart'], this.handleMouseDownHandler_);\n            this.off(this.el_, 'mousemove', this.handleMouseMove);\n            this.removeListenersAddedOnMousedownAndTouchstart();\n            this.addClass('disabled');\n            this.enabled_ = false;\n\n            // Restore normal playback state if controls are disabled while scrubbing\n            if (this.player_.scrubbing()) {\n                const seekBar = this.getChild('seekBar');\n                this.player_.scrubbing(false);\n                if (seekBar.videoWasPlaying) {\n                    silencePromise(this.player_.play());\n                }\n            }\n        }\n\n        /**\n         * Enable all controls on the progress control and its children\n         */\n        enable() {\n            this.children().forEach(child => child.enable && child.enable());\n            if (this.enabled()) {\n                return;\n            }\n            this.on(['mousedown', 'touchstart'], this.handleMouseDownHandler_);\n            this.on(this.el_, 'mousemove', this.handleMouseMove);\n            this.removeClass('disabled');\n            this.enabled_ = true;\n        }\n\n        /**\n         * Cleanup listeners after the user finishes interacting with the progress controls\n         */\n        removeListenersAddedOnMousedownAndTouchstart() {\n            const doc = this.el_.ownerDocument;\n            this.off(doc, 'mousemove', this.throttledHandleMouseSeek);\n            this.off(doc, 'touchmove', this.throttledHandleMouseSeek);\n            this.off(doc, 'mouseup', this.handleMouseUpHandler_);\n            this.off(doc, 'touchend', this.handleMouseUpHandler_);\n        }\n\n        /**\n         * Handle `mousedown` or `touchstart` events on the `ProgressControl`.\n         *\n         * @param {Event} event\n         *        `mousedown` or `touchstart` event that triggered this function\n         *\n         * @listens mousedown\n         * @listens touchstart\n         */\n        handleMouseDown(event) {\n            const doc = this.el_.ownerDocument;\n            const seekBar = this.getChild('seekBar');\n            if (seekBar) {\n                seekBar.handleMouseDown(event);\n            }\n            this.on(doc, 'mousemove', this.throttledHandleMouseSeek);\n            this.on(doc, 'touchmove', this.throttledHandleMouseSeek);\n            this.on(doc, 'mouseup', this.handleMouseUpHandler_);\n            this.on(doc, 'touchend', this.handleMouseUpHandler_);\n        }\n\n        /**\n         * Handle `mouseup` or `touchend` events on the `ProgressControl`.\n         *\n         * @param {Event} event\n         *        `mouseup` or `touchend` event that triggered this function.\n         *\n         * @listens touchend\n         * @listens mouseup\n         */\n        handleMouseUp(event) {\n            const seekBar = this.getChild('seekBar');\n            if (seekBar) {\n                seekBar.handleMouseUp(event);\n            }\n            this.removeListenersAddedOnMousedownAndTouchstart();\n        }\n    }\n\n    /**\n     * Default options for `ProgressControl`\n     *\n     * @type {Object}\n     * @private\n     */\n    ProgressControl.prototype.options_ = {\n        children: ['seekBar']\n    };\n    Component$1.registerComponent('ProgressControl', ProgressControl);\n\n    /**\n     * @file picture-in-picture-toggle.js\n     */\n\n    /**\n     * Toggle Picture-in-Picture mode\n     *\n     * @extends Button\n     */\n    class PictureInPictureToggle extends Button {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @listens Player#enterpictureinpicture\n         * @listens Player#leavepictureinpicture\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.setIcon('picture-in-picture-enter');\n            this.on(player, ['enterpictureinpicture', 'leavepictureinpicture'], e => this.handlePictureInPictureChange(e));\n            this.on(player, ['disablepictureinpicturechanged', 'loadedmetadata'], e => this.handlePictureInPictureEnabledChange(e));\n            this.on(player, ['loadedmetadata', 'audioonlymodechange', 'audiopostermodechange'], () => this.handlePictureInPictureAudioModeChange());\n\n            // TODO: Deactivate button on player emptied event.\n            this.disable();\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-picture-in-picture-control vjs-hidden ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * Displays or hides the button depending on the audio mode detection.\n         * Exits picture-in-picture if it is enabled when switching to audio mode.\n         */\n        handlePictureInPictureAudioModeChange() {\n            // This audio detection will not detect HLS or DASH audio-only streams because there was no reliable way to detect them at the time\n            const isSourceAudio = this.player_.currentType().substring(0, 5) === 'audio';\n            const isAudioMode = isSourceAudio || this.player_.audioPosterMode() || this.player_.audioOnlyMode();\n            if (!isAudioMode) {\n                this.show();\n                return;\n            }\n            if (this.player_.isInPictureInPicture()) {\n                this.player_.exitPictureInPicture();\n            }\n            this.hide();\n        }\n\n        /**\n         * Enables or disables button based on availability of a Picture-In-Picture mode.\n         *\n         * Enabled if\n         * - `player.options().enableDocumentPictureInPicture` is true and\n         *   window.documentPictureInPicture is available; or\n         * - `player.disablePictureInPicture()` is false and\n         *   element.requestPictureInPicture is available\n         */\n        handlePictureInPictureEnabledChange() {\n            if (document.pictureInPictureEnabled && this.player_.disablePictureInPicture() === false || this.player_.options_.enableDocumentPictureInPicture && 'documentPictureInPicture' in window) {\n                this.enable();\n            } else {\n                this.disable();\n            }\n        }\n\n        /**\n         * Handles enterpictureinpicture and leavepictureinpicture on the player and change control text accordingly.\n         *\n         * @param {Event} [event]\n         *        The {@link Player#enterpictureinpicture} or {@link Player#leavepictureinpicture} event that caused this function to be\n         *        called.\n         *\n         * @listens Player#enterpictureinpicture\n         * @listens Player#leavepictureinpicture\n         */\n        handlePictureInPictureChange(event) {\n            if (this.player_.isInPictureInPicture()) {\n                this.setIcon('picture-in-picture-exit');\n                this.controlText('Exit Picture-in-Picture');\n            } else {\n                this.setIcon('picture-in-picture-enter');\n                this.controlText('Picture-in-Picture');\n            }\n            this.handlePictureInPictureEnabledChange();\n        }\n\n        /**\n         * This gets called when an `PictureInPictureToggle` is \"clicked\". See\n         * {@link ClickableComponent} for more detailed information on what a click can be.\n         *\n         * @param {Event} [event]\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            if (!this.player_.isInPictureInPicture()) {\n                this.player_.requestPictureInPicture();\n            } else {\n                this.player_.exitPictureInPicture();\n            }\n        }\n\n        /**\n         * Show the `Component`s element if it is hidden by removing the\n         * 'vjs-hidden' class name from it only in browsers that support the Picture-in-Picture API.\n         */\n        show() {\n            // Does not allow to display the pictureInPictureToggle in browsers that do not support the Picture-in-Picture API, e.g. Firefox.\n            if (typeof document.exitPictureInPicture !== 'function') {\n                return;\n            }\n            super.show();\n        }\n    }\n\n    /**\n     * The text that should display over the `PictureInPictureToggle`s controls. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    PictureInPictureToggle.prototype.controlText_ = 'Picture-in-Picture';\n    Component$1.registerComponent('PictureInPictureToggle', PictureInPictureToggle);\n\n    /**\n     * @file fullscreen-toggle.js\n     */\n\n    /**\n     * Toggle fullscreen video\n     *\n     * @extends Button\n     */\n    class FullscreenToggle extends Button {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.setIcon('fullscreen-enter');\n            this.on(player, 'fullscreenchange', e => this.handleFullscreenChange(e));\n            if (document[player.fsApi_.fullscreenEnabled] === false) {\n                this.disable();\n            }\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-fullscreen-control ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * Handles fullscreenchange on the player and change control text accordingly.\n         *\n         * @param {Event} [event]\n         *        The {@link Player#fullscreenchange} event that caused this function to be\n         *        called.\n         *\n         * @listens Player#fullscreenchange\n         */\n        handleFullscreenChange(event) {\n            if (this.player_.isFullscreen()) {\n                this.controlText('Exit Fullscreen');\n                this.setIcon('fullscreen-exit');\n            } else {\n                this.controlText('Fullscreen');\n                this.setIcon('fullscreen-enter');\n            }\n        }\n\n        /**\n         * This gets called when an `FullscreenToggle` is \"clicked\". See\n         * {@link ClickableComponent} for more detailed information on what a click can be.\n         *\n         * @param {Event} [event]\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            if (!this.player_.isFullscreen()) {\n                this.player_.requestFullscreen();\n            } else {\n                this.player_.exitFullscreen();\n            }\n        }\n    }\n\n    /**\n     * The text that should display over the `FullscreenToggle`s controls. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    FullscreenToggle.prototype.controlText_ = 'Fullscreen';\n    Component$1.registerComponent('FullscreenToggle', FullscreenToggle);\n\n    /**\n     * Check if volume control is supported and if it isn't hide the\n     * `Component` that was passed  using the `vjs-hidden` class.\n     *\n     * @param { import('../../component').default } self\n     *        The component that should be hidden if volume is unsupported\n     *\n     * @param { import('../../player').default } player\n     *        A reference to the player\n     *\n     * @private\n     */\n    const checkVolumeSupport = function (self, player) {\n        // hide volume controls when they're not supported by the current tech\n        if (player.tech_ && !player.tech_.featuresVolumeControl) {\n            self.addClass('vjs-hidden');\n        }\n        self.on(player, 'loadstart', function () {\n            if (!player.tech_.featuresVolumeControl) {\n                self.addClass('vjs-hidden');\n            } else {\n                self.removeClass('vjs-hidden');\n            }\n        });\n    };\n\n    /**\n     * @file volume-level.js\n     */\n\n    /**\n     * Shows volume level\n     *\n     * @extends Component\n     */\n    class VolumeLevel extends Component$1 {\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            const el = super.createEl('div', {\n                className: 'vjs-volume-level'\n            });\n            this.setIcon('circle', el);\n            el.appendChild(super.createEl('span', {\n                className: 'vjs-control-text'\n            }));\n            return el;\n        }\n    }\n    Component$1.registerComponent('VolumeLevel', VolumeLevel);\n\n    /**\n     * @file volume-level-tooltip.js\n     */\n\n    /**\n     * Volume level tooltips display a volume above or side by side the volume bar.\n     *\n     * @extends Component\n     */\n    class VolumeLevelTooltip extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The {@link Player} that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);\n        }\n\n        /**\n         * Create the volume tooltip DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-volume-tooltip'\n            }, {\n                'aria-hidden': 'true'\n            });\n        }\n\n        /**\n         * Updates the position of the tooltip relative to the `VolumeBar` and\n         * its content text.\n         *\n         * @param {Object} rangeBarRect\n         *        The `ClientRect` for the {@link VolumeBar} element.\n         *\n         * @param {number} rangeBarPoint\n         *        A number from 0 to 1, representing a horizontal/vertical reference point\n         *        from the left edge of the {@link VolumeBar}\n         *\n         * @param {boolean} vertical\n         *        Referees to the Volume control position\n         *        in the control bar{@link VolumeControl}\n         *\n         */\n        update(rangeBarRect, rangeBarPoint, vertical, content) {\n            if (!vertical) {\n                const tooltipRect = getBoundingClientRect(this.el_);\n                const playerRect = getBoundingClientRect(this.player_.el());\n                const volumeBarPointPx = rangeBarRect.width * rangeBarPoint;\n                if (!playerRect || !tooltipRect) {\n                    return;\n                }\n                const spaceLeftOfPoint = rangeBarRect.left - playerRect.left + volumeBarPointPx;\n                const spaceRightOfPoint = rangeBarRect.width - volumeBarPointPx + (playerRect.right - rangeBarRect.right);\n                let pullTooltipBy = tooltipRect.width / 2;\n                if (spaceLeftOfPoint < pullTooltipBy) {\n                    pullTooltipBy += pullTooltipBy - spaceLeftOfPoint;\n                } else if (spaceRightOfPoint < pullTooltipBy) {\n                    pullTooltipBy = spaceRightOfPoint;\n                }\n                if (pullTooltipBy < 0) {\n                    pullTooltipBy = 0;\n                } else if (pullTooltipBy > tooltipRect.width) {\n                    pullTooltipBy = tooltipRect.width;\n                }\n                this.el_.style.right = `-${pullTooltipBy}px`;\n            }\n            this.write(`${content}%`);\n        }\n\n        /**\n         * Write the volume to the tooltip DOM element.\n         *\n         * @param {string} content\n         *        The formatted volume for the tooltip.\n         */\n        write(content) {\n            textContent(this.el_, content);\n        }\n\n        /**\n         * Updates the position of the volume tooltip relative to the `VolumeBar`.\n         *\n         * @param {Object} rangeBarRect\n         *        The `ClientRect` for the {@link VolumeBar} element.\n         *\n         * @param {number} rangeBarPoint\n         *        A number from 0 to 1, representing a horizontal/vertical reference point\n         *        from the left edge of the {@link VolumeBar}\n         *\n         * @param {boolean} vertical\n         *        Referees to the Volume control position\n         *        in the control bar{@link VolumeControl}\n         *\n         * @param {number} volume\n         *        The volume level to update the tooltip to\n         *\n         * @param {Function} cb\n         *        A function that will be called during the request animation frame\n         *        for tooltips that need to do additional animations from the default\n         */\n        updateVolume(rangeBarRect, rangeBarPoint, vertical, volume, cb) {\n            this.requestNamedAnimationFrame('VolumeLevelTooltip#updateVolume', () => {\n                this.update(rangeBarRect, rangeBarPoint, vertical, volume.toFixed(0));\n                if (cb) {\n                    cb();\n                }\n            });\n        }\n    }\n    Component$1.registerComponent('VolumeLevelTooltip', VolumeLevelTooltip);\n\n    /**\n     * @file mouse-volume-level-display.js\n     */\n\n    /**\n     * The {@link MouseVolumeLevelDisplay} component tracks mouse movement over the\n     * {@link VolumeControl}. It displays an indicator and a {@link VolumeLevelTooltip}\n     * indicating the volume level which is represented by a given point in the\n     * {@link VolumeBar}.\n     *\n     * @extends Component\n     */\n    class MouseVolumeLevelDisplay extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The {@link Player} that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);\n        }\n\n        /**\n         * Create the DOM element for this class.\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-mouse-display'\n            });\n        }\n\n        /**\n         * Enquires updates to its own DOM as well as the DOM of its\n         * {@link VolumeLevelTooltip} child.\n         *\n         * @param {Object} rangeBarRect\n         *        The `ClientRect` for the {@link VolumeBar} element.\n         *\n         * @param {number} rangeBarPoint\n         *        A number from 0 to 1, representing a horizontal/vertical reference point\n         *        from the left edge of the {@link VolumeBar}\n         *\n         * @param {boolean} vertical\n         *        Referees to the Volume control position\n         *        in the control bar{@link VolumeControl}\n         *\n         */\n        update(rangeBarRect, rangeBarPoint, vertical) {\n            const volume = 100 * rangeBarPoint;\n            this.getChild('volumeLevelTooltip').updateVolume(rangeBarRect, rangeBarPoint, vertical, volume, () => {\n                if (vertical) {\n                    this.el_.style.bottom = `${rangeBarRect.height * rangeBarPoint}px`;\n                } else {\n                    this.el_.style.left = `${rangeBarRect.width * rangeBarPoint}px`;\n                }\n            });\n        }\n    }\n\n    /**\n     * Default options for `MouseVolumeLevelDisplay`\n     *\n     * @type {Object}\n     * @private\n     */\n    MouseVolumeLevelDisplay.prototype.options_ = {\n        children: ['volumeLevelTooltip']\n    };\n    Component$1.registerComponent('MouseVolumeLevelDisplay', MouseVolumeLevelDisplay);\n\n    /**\n     * @file volume-bar.js\n     */\n\n    /**\n     * The bar that contains the volume level and can be clicked on to adjust the level\n     *\n     * @extends Slider\n     */\n    class VolumeBar extends Slider {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.on('slideractive', e => this.updateLastVolume_(e));\n            this.on(player, 'volumechange', e => this.updateARIAAttributes(e));\n            player.ready(() => this.updateARIAAttributes());\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-volume-bar vjs-slider-bar'\n            }, {\n                'aria-label': this.localize('Volume Level'),\n                'aria-live': 'polite'\n            });\n        }\n\n        /**\n         * Handle mouse down on volume bar\n         *\n         * @param {Event} event\n         *        The `mousedown` event that caused this to run.\n         *\n         * @listens mousedown\n         */\n        handleMouseDown(event) {\n            if (!isSingleLeftClick(event)) {\n                return;\n            }\n            super.handleMouseDown(event);\n        }\n\n        /**\n         * Handle movement events on the {@link VolumeMenuButton}.\n         *\n         * @param {Event} event\n         *        The event that caused this function to run.\n         *\n         * @listens mousemove\n         */\n        handleMouseMove(event) {\n            const mouseVolumeLevelDisplay = this.getChild('mouseVolumeLevelDisplay');\n            if (mouseVolumeLevelDisplay) {\n                const volumeBarEl = this.el();\n                const volumeBarRect = getBoundingClientRect(volumeBarEl);\n                const vertical = this.vertical();\n                let volumeBarPoint = getPointerPosition(volumeBarEl, event);\n                volumeBarPoint = vertical ? volumeBarPoint.y : volumeBarPoint.x;\n                // The default skin has a gap on either side of the `VolumeBar`. This means\n                // that it's possible to trigger this behavior outside the boundaries of\n                // the `VolumeBar`. This ensures we stay within it at all times.\n                volumeBarPoint = clamp(volumeBarPoint, 0, 1);\n                mouseVolumeLevelDisplay.update(volumeBarRect, volumeBarPoint, vertical);\n            }\n            if (!isSingleLeftClick(event)) {\n                return;\n            }\n            this.checkMuted();\n            this.player_.volume(this.calculateDistance(event));\n        }\n\n        /**\n         * If the player is muted unmute it.\n         */\n        checkMuted() {\n            if (this.player_.muted()) {\n                this.player_.muted(false);\n            }\n        }\n\n        /**\n         * Get percent of volume level\n         *\n         * @return {number}\n         *         Volume level percent as a decimal number.\n         */\n        getPercent() {\n            if (this.player_.muted()) {\n                return 0;\n            }\n            return this.player_.volume();\n        }\n\n        /**\n         * Increase volume level for keyboard users\n         */\n        stepForward() {\n            this.checkMuted();\n            this.player_.volume(this.player_.volume() + 0.1);\n        }\n\n        /**\n         * Decrease volume level for keyboard users\n         */\n        stepBack() {\n            this.checkMuted();\n            this.player_.volume(this.player_.volume() - 0.1);\n        }\n\n        /**\n         * Update ARIA accessibility attributes\n         *\n         * @param {Event} [event]\n         *        The `volumechange` event that caused this function to run.\n         *\n         * @listens Player#volumechange\n         */\n        updateARIAAttributes(event) {\n            const ariaValue = this.player_.muted() ? 0 : this.volumeAsPercentage_();\n            this.el_.setAttribute('aria-valuenow', ariaValue);\n            this.el_.setAttribute('aria-valuetext', ariaValue + '%');\n        }\n\n        /**\n         * Returns the current value of the player volume as a percentage\n         *\n         * @private\n         */\n        volumeAsPercentage_() {\n            return Math.round(this.player_.volume() * 100);\n        }\n\n        /**\n         * When user starts dragging the VolumeBar, store the volume and listen for\n         * the end of the drag. When the drag ends, if the volume was set to zero,\n         * set lastVolume to the stored volume.\n         *\n         * @listens slideractive\n         * @private\n         */\n        updateLastVolume_() {\n            const volumeBeforeDrag = this.player_.volume();\n            this.one('sliderinactive', () => {\n                if (this.player_.volume() === 0) {\n                    this.player_.lastVolume_(volumeBeforeDrag);\n                }\n            });\n        }\n    }\n\n    /**\n     * Default options for the `VolumeBar`\n     *\n     * @type {Object}\n     * @private\n     */\n    VolumeBar.prototype.options_ = {\n        children: ['volumeLevel'],\n        barName: 'volumeLevel'\n    };\n\n    // MouseVolumeLevelDisplay tooltip should not be added to a player on mobile devices\n    if (!IS_IOS && !IS_ANDROID) {\n        VolumeBar.prototype.options_.children.splice(0, 0, 'mouseVolumeLevelDisplay');\n    }\n\n    /**\n     * Call the update event for this Slider when this event happens on the player.\n     *\n     * @type {string}\n     */\n    VolumeBar.prototype.playerEvent = 'volumechange';\n    Component$1.registerComponent('VolumeBar', VolumeBar);\n\n    /**\n     * @file volume-control.js\n     */\n\n    /**\n     * The component for controlling the volume level\n     *\n     * @extends Component\n     */\n    class VolumeControl extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options={}]\n         *        The key/value store of player options.\n         */\n        constructor(player, options = {}) {\n            options.vertical = options.vertical || false;\n\n            // Pass the vertical option down to the VolumeBar if\n            // the VolumeBar is turned on.\n            if (typeof options.volumeBar === 'undefined' || isPlain(options.volumeBar)) {\n                options.volumeBar = options.volumeBar || {};\n                options.volumeBar.vertical = options.vertical;\n            }\n            super(player, options);\n\n            // hide this control if volume support is missing\n            checkVolumeSupport(this, player);\n            this.throttledHandleMouseMove = throttle(bind_(this, this.handleMouseMove), UPDATE_REFRESH_INTERVAL);\n            this.handleMouseUpHandler_ = e => this.handleMouseUp(e);\n            this.on('mousedown', e => this.handleMouseDown(e));\n            this.on('touchstart', e => this.handleMouseDown(e));\n            this.on('mousemove', e => this.handleMouseMove(e));\n\n            // while the slider is active (the mouse has been pressed down and\n            // is dragging) or in focus we do not want to hide the VolumeBar\n            this.on(this.volumeBar, ['focus', 'slideractive'], () => {\n                this.volumeBar.addClass('vjs-slider-active');\n                this.addClass('vjs-slider-active');\n                this.trigger('slideractive');\n            });\n            this.on(this.volumeBar, ['blur', 'sliderinactive'], () => {\n                this.volumeBar.removeClass('vjs-slider-active');\n                this.removeClass('vjs-slider-active');\n                this.trigger('sliderinactive');\n            });\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            let orientationClass = 'vjs-volume-horizontal';\n            if (this.options_.vertical) {\n                orientationClass = 'vjs-volume-vertical';\n            }\n            return super.createEl('div', {\n                className: `vjs-volume-control vjs-control ${orientationClass}`\n            });\n        }\n\n        /**\n         * Handle `mousedown` or `touchstart` events on the `VolumeControl`.\n         *\n         * @param {Event} event\n         *        `mousedown` or `touchstart` event that triggered this function\n         *\n         * @listens mousedown\n         * @listens touchstart\n         */\n        handleMouseDown(event) {\n            const doc = this.el_.ownerDocument;\n            this.on(doc, 'mousemove', this.throttledHandleMouseMove);\n            this.on(doc, 'touchmove', this.throttledHandleMouseMove);\n            this.on(doc, 'mouseup', this.handleMouseUpHandler_);\n            this.on(doc, 'touchend', this.handleMouseUpHandler_);\n        }\n\n        /**\n         * Handle `mouseup` or `touchend` events on the `VolumeControl`.\n         *\n         * @param {Event} event\n         *        `mouseup` or `touchend` event that triggered this function.\n         *\n         * @listens touchend\n         * @listens mouseup\n         */\n        handleMouseUp(event) {\n            const doc = this.el_.ownerDocument;\n            this.off(doc, 'mousemove', this.throttledHandleMouseMove);\n            this.off(doc, 'touchmove', this.throttledHandleMouseMove);\n            this.off(doc, 'mouseup', this.handleMouseUpHandler_);\n            this.off(doc, 'touchend', this.handleMouseUpHandler_);\n        }\n\n        /**\n         * Handle `mousedown` or `touchstart` events on the `VolumeControl`.\n         *\n         * @param {Event} event\n         *        `mousedown` or `touchstart` event that triggered this function\n         *\n         * @listens mousedown\n         * @listens touchstart\n         */\n        handleMouseMove(event) {\n            this.volumeBar.handleMouseMove(event);\n        }\n    }\n\n    /**\n     * Default options for the `VolumeControl`\n     *\n     * @type {Object}\n     * @private\n     */\n    VolumeControl.prototype.options_ = {\n        children: ['volumeBar']\n    };\n    Component$1.registerComponent('VolumeControl', VolumeControl);\n\n    /**\n     * Check if muting volume is supported and if it isn't hide the mute toggle\n     * button.\n     *\n     * @param { import('../../component').default } self\n     *        A reference to the mute toggle button\n     *\n     * @param { import('../../player').default } player\n     *        A reference to the player\n     *\n     * @private\n     */\n    const checkMuteSupport = function (self, player) {\n        // hide mute toggle button if it's not supported by the current tech\n        if (player.tech_ && !player.tech_.featuresMuteControl) {\n            self.addClass('vjs-hidden');\n        }\n        self.on(player, 'loadstart', function () {\n            if (!player.tech_.featuresMuteControl) {\n                self.addClass('vjs-hidden');\n            } else {\n                self.removeClass('vjs-hidden');\n            }\n        });\n    };\n\n    /**\n     * @file mute-toggle.js\n     */\n\n    /**\n     * A button component for muting the audio.\n     *\n     * @extends Button\n     */\n    class MuteToggle extends Button {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n\n            // hide this control if volume support is missing\n            checkMuteSupport(this, player);\n            this.on(player, ['loadstart', 'volumechange'], e => this.update(e));\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-mute-control ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * This gets called when an `MuteToggle` is \"clicked\". See\n         * {@link ClickableComponent} for more detailed information on what a click can be.\n         *\n         * @param {Event} [event]\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            const vol = this.player_.volume();\n            const lastVolume = this.player_.lastVolume_();\n            if (vol === 0) {\n                const volumeToSet = lastVolume < 0.1 ? 0.1 : lastVolume;\n                this.player_.volume(volumeToSet);\n                this.player_.muted(false);\n            } else {\n                this.player_.muted(this.player_.muted() ? false : true);\n            }\n        }\n\n        /**\n         * Update the `MuteToggle` button based on the state of `volume` and `muted`\n         * on the player.\n         *\n         * @param {Event} [event]\n         *        The {@link Player#loadstart} event if this function was called\n         *        through an event.\n         *\n         * @listens Player#loadstart\n         * @listens Player#volumechange\n         */\n        update(event) {\n            this.updateIcon_();\n            this.updateControlText_();\n        }\n\n        /**\n         * Update the appearance of the `MuteToggle` icon.\n         *\n         * Possible states (given `level` variable below):\n         * - 0: crossed out\n         * - 1: zero bars of volume\n         * - 2: one bar of volume\n         * - 3: two bars of volume\n         *\n         * @private\n         */\n        updateIcon_() {\n            const vol = this.player_.volume();\n            let level = 3;\n            this.setIcon('volume-high');\n\n            // in iOS when a player is loaded with muted attribute\n            // and volume is changed with a native mute button\n            // we want to make sure muted state is updated\n            if (IS_IOS && this.player_.tech_ && this.player_.tech_.el_) {\n                this.player_.muted(this.player_.tech_.el_.muted);\n            }\n            if (vol === 0 || this.player_.muted()) {\n                this.setIcon('volume-mute');\n                level = 0;\n            } else if (vol < 0.33) {\n                this.setIcon('volume-low');\n                level = 1;\n            } else if (vol < 0.67) {\n                this.setIcon('volume-medium');\n                level = 2;\n            }\n            removeClass(this.el_, [0, 1, 2, 3].reduce((str, i) => str + `${i ? ' ' : ''}vjs-vol-${i}`, ''));\n            addClass(this.el_, `vjs-vol-${level}`);\n        }\n\n        /**\n         * If `muted` has changed on the player, update the control text\n         * (`title` attribute on `vjs-mute-control` element and content of\n         * `vjs-control-text` element).\n         *\n         * @private\n         */\n        updateControlText_() {\n            const soundOff = this.player_.muted() || this.player_.volume() === 0;\n            const text = soundOff ? 'Unmute' : 'Mute';\n            if (this.controlText() !== text) {\n                this.controlText(text);\n            }\n        }\n    }\n\n    /**\n     * The text that should display over the `MuteToggle`s controls. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    MuteToggle.prototype.controlText_ = 'Mute';\n    Component$1.registerComponent('MuteToggle', MuteToggle);\n\n    /**\n     * @file volume-control.js\n     */\n\n    /**\n     * A Component to contain the MuteToggle and VolumeControl so that\n     * they can work together.\n     *\n     * @extends Component\n     */\n    class VolumePanel extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options={}]\n         *        The key/value store of player options.\n         */\n        constructor(player, options = {}) {\n            if (typeof options.inline !== 'undefined') {\n                options.inline = options.inline;\n            } else {\n                options.inline = true;\n            }\n\n            // pass the inline option down to the VolumeControl as vertical if\n            // the VolumeControl is on.\n            if (typeof options.volumeControl === 'undefined' || isPlain(options.volumeControl)) {\n                options.volumeControl = options.volumeControl || {};\n                options.volumeControl.vertical = !options.inline;\n            }\n            super(player, options);\n\n            // this handler is used by mouse handler methods below\n            this.handleKeyPressHandler_ = e => this.handleKeyPress(e);\n            this.on(player, ['loadstart'], e => this.volumePanelState_(e));\n            this.on(this.muteToggle, 'keyup', e => this.handleKeyPress(e));\n            this.on(this.volumeControl, 'keyup', e => this.handleVolumeControlKeyUp(e));\n            this.on('keydown', e => this.handleKeyPress(e));\n            this.on('mouseover', e => this.handleMouseOver(e));\n            this.on('mouseout', e => this.handleMouseOut(e));\n\n            // while the slider is active (the mouse has been pressed down and\n            // is dragging) we do not want to hide the VolumeBar\n            this.on(this.volumeControl, ['slideractive'], this.sliderActive_);\n            this.on(this.volumeControl, ['sliderinactive'], this.sliderInactive_);\n        }\n\n        /**\n         * Add vjs-slider-active class to the VolumePanel\n         *\n         * @listens VolumeControl#slideractive\n         * @private\n         */\n        sliderActive_() {\n            this.addClass('vjs-slider-active');\n        }\n\n        /**\n         * Removes vjs-slider-active class to the VolumePanel\n         *\n         * @listens VolumeControl#sliderinactive\n         * @private\n         */\n        sliderInactive_() {\n            this.removeClass('vjs-slider-active');\n        }\n\n        /**\n         * Adds vjs-hidden or vjs-mute-toggle-only to the VolumePanel\n         * depending on MuteToggle and VolumeControl state\n         *\n         * @listens Player#loadstart\n         * @private\n         */\n        volumePanelState_() {\n            // hide volume panel if neither volume control or mute toggle\n            // are displayed\n            if (this.volumeControl.hasClass('vjs-hidden') && this.muteToggle.hasClass('vjs-hidden')) {\n                this.addClass('vjs-hidden');\n            }\n\n            // if only mute toggle is visible we don't want\n            // volume panel expanding when hovered or active\n            if (this.volumeControl.hasClass('vjs-hidden') && !this.muteToggle.hasClass('vjs-hidden')) {\n                this.addClass('vjs-mute-toggle-only');\n            }\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            let orientationClass = 'vjs-volume-panel-horizontal';\n            if (!this.options_.inline) {\n                orientationClass = 'vjs-volume-panel-vertical';\n            }\n            return super.createEl('div', {\n                className: `vjs-volume-panel vjs-control ${orientationClass}`\n            });\n        }\n\n        /**\n         * Dispose of the `volume-panel` and all child components.\n         */\n        dispose() {\n            this.handleMouseOut();\n            super.dispose();\n        }\n\n        /**\n         * Handles `keyup` events on the `VolumeControl`, looking for ESC, which closes\n         * the volume panel and sets focus on `MuteToggle`.\n         *\n         * @param {Event} event\n         *        The `keyup` event that caused this function to be called.\n         *\n         * @listens keyup\n         */\n        handleVolumeControlKeyUp(event) {\n            if (keycode.isEventKey(event, 'Esc')) {\n                this.muteToggle.focus();\n            }\n        }\n\n        /**\n         * This gets called when a `VolumePanel` gains hover via a `mouseover` event.\n         * Turns on listening for `mouseover` event. When they happen it\n         * calls `this.handleMouseOver`.\n         *\n         * @param {Event} event\n         *        The `mouseover` event that caused this function to be called.\n         *\n         * @listens mouseover\n         */\n        handleMouseOver(event) {\n            this.addClass('vjs-hover');\n            on(document, 'keyup', this.handleKeyPressHandler_);\n        }\n\n        /**\n         * This gets called when a `VolumePanel` gains hover via a `mouseout` event.\n         * Turns on listening for `mouseout` event. When they happen it\n         * calls `this.handleMouseOut`.\n         *\n         * @param {Event} event\n         *        The `mouseout` event that caused this function to be called.\n         *\n         * @listens mouseout\n         */\n        handleMouseOut(event) {\n            this.removeClass('vjs-hover');\n            off(document, 'keyup', this.handleKeyPressHandler_);\n        }\n\n        /**\n         * Handles `keyup` event on the document or `keydown` event on the `VolumePanel`,\n         * looking for ESC, which hides the `VolumeControl`.\n         *\n         * @param {Event} event\n         *        The keypress that triggered this event.\n         *\n         * @listens keydown | keyup\n         */\n        handleKeyPress(event) {\n            if (keycode.isEventKey(event, 'Esc')) {\n                this.handleMouseOut();\n            }\n        }\n    }\n\n    /**\n     * Default options for the `VolumeControl`\n     *\n     * @type {Object}\n     * @private\n     */\n    VolumePanel.prototype.options_ = {\n        children: ['muteToggle', 'volumeControl']\n    };\n    Component$1.registerComponent('VolumePanel', VolumePanel);\n\n    /**\n     * Button to skip forward a configurable amount of time\n     * through a video. Renders in the control bar.\n     *\n     * e.g. options: {controlBar: {skipButtons: forward: 5}}\n     *\n     * @extends Button\n     */\n    class SkipForward extends Button {\n        constructor(player, options) {\n            super(player, options);\n            this.validOptions = [5, 10, 30];\n            this.skipTime = this.getSkipForwardTime();\n            if (this.skipTime && this.validOptions.includes(this.skipTime)) {\n                this.setIcon(`forward-${this.skipTime}`);\n                this.controlText(this.localize('Skip forward {1} seconds', [this.skipTime]));\n                this.show();\n            } else {\n                this.hide();\n            }\n        }\n        getSkipForwardTime() {\n            const playerOptions = this.options_.playerOptions;\n            return playerOptions.controlBar && playerOptions.controlBar.skipButtons && playerOptions.controlBar.skipButtons.forward;\n        }\n        buildCSSClass() {\n            return `vjs-skip-forward-${this.getSkipForwardTime()} ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * On click, skips forward in the duration/seekable range by a configurable amount of seconds.\n         * If the time left in the duration/seekable range is less than the configured 'skip forward' time,\n         * skips to end of duration/seekable range.\n         *\n         * Handle a click on a `SkipForward` button\n         *\n         * @param {EventTarget~Event} event\n         *        The `click` event that caused this function\n         *        to be called\n         */\n        handleClick(event) {\n            if (isNaN(this.player_.duration())) {\n                return;\n            }\n            const currentVideoTime = this.player_.currentTime();\n            const liveTracker = this.player_.liveTracker;\n            const duration = liveTracker && liveTracker.isLive() ? liveTracker.seekableEnd() : this.player_.duration();\n            let newTime;\n            if (currentVideoTime + this.skipTime <= duration) {\n                newTime = currentVideoTime + this.skipTime;\n            } else {\n                newTime = duration;\n            }\n            this.player_.currentTime(newTime);\n        }\n\n        /**\n         * Update control text on languagechange\n         */\n        handleLanguagechange() {\n            this.controlText(this.localize('Skip forward {1} seconds', [this.skipTime]));\n        }\n    }\n    SkipForward.prototype.controlText_ = 'Skip Forward';\n    Component$1.registerComponent('SkipForward', SkipForward);\n\n    /**\n     * Button to skip backward a configurable amount of time\n     * through a video. Renders in the control bar.\n     *\n     *  * e.g. options: {controlBar: {skipButtons: backward: 5}}\n     *\n     * @extends Button\n     */\n    class SkipBackward extends Button {\n        constructor(player, options) {\n            super(player, options);\n            this.validOptions = [5, 10, 30];\n            this.skipTime = this.getSkipBackwardTime();\n            if (this.skipTime && this.validOptions.includes(this.skipTime)) {\n                this.setIcon(`replay-${this.skipTime}`);\n                this.controlText(this.localize('Skip backward {1} seconds', [this.skipTime]));\n                this.show();\n            } else {\n                this.hide();\n            }\n        }\n        getSkipBackwardTime() {\n            const playerOptions = this.options_.playerOptions;\n            return playerOptions.controlBar && playerOptions.controlBar.skipButtons && playerOptions.controlBar.skipButtons.backward;\n        }\n        buildCSSClass() {\n            return `vjs-skip-backward-${this.getSkipBackwardTime()} ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * On click, skips backward in the video by a configurable amount of seconds.\n         * If the current time in the video is less than the configured 'skip backward' time,\n         * skips to beginning of video or seekable range.\n         *\n         * Handle a click on a `SkipBackward` button\n         *\n         * @param {EventTarget~Event} event\n         *        The `click` event that caused this function\n         *        to be called\n         */\n        handleClick(event) {\n            const currentVideoTime = this.player_.currentTime();\n            const liveTracker = this.player_.liveTracker;\n            const seekableStart = liveTracker && liveTracker.isLive() && liveTracker.seekableStart();\n            let newTime;\n            if (seekableStart && currentVideoTime - this.skipTime <= seekableStart) {\n                newTime = seekableStart;\n            } else if (currentVideoTime >= this.skipTime) {\n                newTime = currentVideoTime - this.skipTime;\n            } else {\n                newTime = 0;\n            }\n            this.player_.currentTime(newTime);\n        }\n\n        /**\n         * Update control text on languagechange\n         */\n        handleLanguagechange() {\n            this.controlText(this.localize('Skip backward {1} seconds', [this.skipTime]));\n        }\n    }\n    SkipBackward.prototype.controlText_ = 'Skip Backward';\n    Component$1.registerComponent('SkipBackward', SkipBackward);\n\n    /**\n     * @file menu.js\n     */\n\n    /**\n     * The Menu component is used to build popup menus, including subtitle and\n     * captions selection menus.\n     *\n     * @extends Component\n     */\n    class Menu extends Component$1 {\n        /**\n         * Create an instance of this class.\n         *\n         * @param { import('../player').default } player\n         *        the player that this component should attach to\n         *\n         * @param {Object} [options]\n         *        Object of option names and values\n         *\n         */\n        constructor(player, options) {\n            super(player, options);\n            if (options) {\n                this.menuButton_ = options.menuButton;\n            }\n            this.focusedChild_ = -1;\n            this.on('keydown', e => this.handleKeyDown(e));\n\n            // All the menu item instances share the same blur handler provided by the menu container.\n            this.boundHandleBlur_ = e => this.handleBlur(e);\n            this.boundHandleTapClick_ = e => this.handleTapClick(e);\n        }\n\n        /**\n         * Add event listeners to the {@link MenuItem}.\n         *\n         * @param {Object} component\n         *        The instance of the `MenuItem` to add listeners to.\n         *\n         */\n        addEventListenerForItem(component) {\n            if (!(component instanceof Component$1)) {\n                return;\n            }\n            this.on(component, 'blur', this.boundHandleBlur_);\n            this.on(component, ['tap', 'click'], this.boundHandleTapClick_);\n        }\n\n        /**\n         * Remove event listeners from the {@link MenuItem}.\n         *\n         * @param {Object} component\n         *        The instance of the `MenuItem` to remove listeners.\n         *\n         */\n        removeEventListenerForItem(component) {\n            if (!(component instanceof Component$1)) {\n                return;\n            }\n            this.off(component, 'blur', this.boundHandleBlur_);\n            this.off(component, ['tap', 'click'], this.boundHandleTapClick_);\n        }\n\n        /**\n         * This method will be called indirectly when the component has been added\n         * before the component adds to the new menu instance by `addItem`.\n         * In this case, the original menu instance will remove the component\n         * by calling `removeChild`.\n         *\n         * @param {Object} component\n         *        The instance of the `MenuItem`\n         */\n        removeChild(component) {\n            if (typeof component === 'string') {\n                component = this.getChild(component);\n            }\n            this.removeEventListenerForItem(component);\n            super.removeChild(component);\n        }\n\n        /**\n         * Add a {@link MenuItem} to the menu.\n         *\n         * @param {Object|string} component\n         *        The name or instance of the `MenuItem` to add.\n         *\n         */\n        addItem(component) {\n            const childComponent = this.addChild(component);\n            if (childComponent) {\n                this.addEventListenerForItem(childComponent);\n            }\n        }\n\n        /**\n         * Create the `Menu`s DOM element.\n         *\n         * @return {Element}\n         *         the element that was created\n         */\n        createEl() {\n            const contentElType = this.options_.contentElType || 'ul';\n            this.contentEl_ = createEl(contentElType, {\n                className: 'vjs-menu-content'\n            });\n            this.contentEl_.setAttribute('role', 'menu');\n            const el = super.createEl('div', {\n                append: this.contentEl_,\n                className: 'vjs-menu'\n            });\n            el.appendChild(this.contentEl_);\n\n            // Prevent clicks from bubbling up. Needed for Menu Buttons,\n            // where a click on the parent is significant\n            on(el, 'click', function (event) {\n                event.preventDefault();\n                event.stopImmediatePropagation();\n            });\n            return el;\n        }\n        dispose() {\n            this.contentEl_ = null;\n            this.boundHandleBlur_ = null;\n            this.boundHandleTapClick_ = null;\n            super.dispose();\n        }\n\n        /**\n         * Called when a `MenuItem` loses focus.\n         *\n         * @param {Event} event\n         *        The `blur` event that caused this function to be called.\n         *\n         * @listens blur\n         */\n        handleBlur(event) {\n            const relatedTarget = event.relatedTarget || document.activeElement;\n\n            // Close menu popup when a user clicks outside the menu\n            if (!this.children().some(element => {\n                return element.el() === relatedTarget;\n            })) {\n                const btn = this.menuButton_;\n                if (btn && btn.buttonPressed_ && relatedTarget !== btn.el().firstChild) {\n                    btn.unpressButton();\n                }\n            }\n        }\n\n        /**\n         * Called when a `MenuItem` gets clicked or tapped.\n         *\n         * @param {Event} event\n         *        The `click` or `tap` event that caused this function to be called.\n         *\n         * @listens click,tap\n         */\n        handleTapClick(event) {\n            // Unpress the associated MenuButton, and move focus back to it\n            if (this.menuButton_) {\n                this.menuButton_.unpressButton();\n                const childComponents = this.children();\n                if (!Array.isArray(childComponents)) {\n                    return;\n                }\n                const foundComponent = childComponents.filter(component => component.el() === event.target)[0];\n                if (!foundComponent) {\n                    return;\n                }\n\n                // don't focus menu button if item is a caption settings item\n                // because focus will move elsewhere\n                if (foundComponent.name() !== 'CaptionSettingsMenuItem') {\n                    this.menuButton_.focus();\n                }\n            }\n        }\n\n        /**\n         * Handle a `keydown` event on this menu. This listener is added in the constructor.\n         *\n         * @param {KeyboardEvent} event\n         *        A `keydown` event that happened on the menu.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            // Left and Down Arrows\n            if (keycode.isEventKey(event, 'Left') || keycode.isEventKey(event, 'Down')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.stepForward();\n\n                // Up and Right Arrows\n            } else if (keycode.isEventKey(event, 'Right') || keycode.isEventKey(event, 'Up')) {\n                event.preventDefault();\n                event.stopPropagation();\n                this.stepBack();\n            }\n        }\n\n        /**\n         * Move to next (lower) menu item for keyboard users.\n         */\n        stepForward() {\n            let stepChild = 0;\n            if (this.focusedChild_ !== undefined) {\n                stepChild = this.focusedChild_ + 1;\n            }\n            this.focus(stepChild);\n        }\n\n        /**\n         * Move to previous (higher) menu item for keyboard users.\n         */\n        stepBack() {\n            let stepChild = 0;\n            if (this.focusedChild_ !== undefined) {\n                stepChild = this.focusedChild_ - 1;\n            }\n            this.focus(stepChild);\n        }\n\n        /**\n         * Set focus on a {@link MenuItem} in the `Menu`.\n         *\n         * @param {Object|string} [item=0]\n         *        Index of child item set focus on.\n         */\n        focus(item = 0) {\n            const children = this.children().slice();\n            const haveTitle = children.length && children[0].hasClass('vjs-menu-title');\n            if (haveTitle) {\n                children.shift();\n            }\n            if (children.length > 0) {\n                if (item < 0) {\n                    item = 0;\n                } else if (item >= children.length) {\n                    item = children.length - 1;\n                }\n                this.focusedChild_ = item;\n                children[item].el_.focus();\n            }\n        }\n    }\n    Component$1.registerComponent('Menu', Menu);\n\n    /**\n     * @file menu-button.js\n     */\n\n    /**\n     * A `MenuButton` class for any popup {@link Menu}.\n     *\n     * @extends Component\n     */\n    class MenuButton extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options={}]\n         *        The key/value store of player options.\n         */\n        constructor(player, options = {}) {\n            super(player, options);\n            this.menuButton_ = new Button(player, options);\n            this.menuButton_.controlText(this.controlText_);\n            this.menuButton_.el_.setAttribute('aria-haspopup', 'true');\n\n            // Add buildCSSClass values to the button, not the wrapper\n            const buttonClass = Button.prototype.buildCSSClass();\n            this.menuButton_.el_.className = this.buildCSSClass() + ' ' + buttonClass;\n            this.menuButton_.removeClass('vjs-control');\n            this.addChild(this.menuButton_);\n            this.update();\n            this.enabled_ = true;\n            const handleClick = e => this.handleClick(e);\n            this.handleMenuKeyUp_ = e => this.handleMenuKeyUp(e);\n            this.on(this.menuButton_, 'tap', handleClick);\n            this.on(this.menuButton_, 'click', handleClick);\n            this.on(this.menuButton_, 'keydown', e => this.handleKeyDown(e));\n            this.on(this.menuButton_, 'mouseenter', () => {\n                this.addClass('vjs-hover');\n                this.menu.show();\n                on(document, 'keyup', this.handleMenuKeyUp_);\n            });\n            this.on('mouseleave', e => this.handleMouseLeave(e));\n            this.on('keydown', e => this.handleSubmenuKeyDown(e));\n        }\n\n        /**\n         * Update the menu based on the current state of its items.\n         */\n        update() {\n            const menu = this.createMenu();\n            if (this.menu) {\n                this.menu.dispose();\n                this.removeChild(this.menu);\n            }\n            this.menu = menu;\n            this.addChild(menu);\n\n            /**\n             * Track the state of the menu button\n             *\n             * @type {Boolean}\n             * @private\n             */\n            this.buttonPressed_ = false;\n            this.menuButton_.el_.setAttribute('aria-expanded', 'false');\n            if (this.items && this.items.length <= this.hideThreshold_) {\n                this.hide();\n                this.menu.contentEl_.removeAttribute('role');\n            } else {\n                this.show();\n                this.menu.contentEl_.setAttribute('role', 'menu');\n            }\n        }\n\n        /**\n         * Create the menu and add all items to it.\n         *\n         * @return {Menu}\n         *         The constructed menu\n         */\n        createMenu() {\n            const menu = new Menu(this.player_, {\n                menuButton: this\n            });\n\n            /**\n             * Hide the menu if the number of items is less than or equal to this threshold. This defaults\n             * to 0 and whenever we add items which can be hidden to the menu we'll increment it. We list\n             * it here because every time we run `createMenu` we need to reset the value.\n             *\n             * @protected\n             * @type {Number}\n             */\n            this.hideThreshold_ = 0;\n\n            // Add a title list item to the top\n            if (this.options_.title) {\n                const titleEl = createEl('li', {\n                    className: 'vjs-menu-title',\n                    textContent: toTitleCase$1(this.options_.title),\n                    tabIndex: -1\n                });\n                const titleComponent = new Component$1(this.player_, {\n                    el: titleEl\n                });\n                menu.addItem(titleComponent);\n            }\n            this.items = this.createItems();\n            if (this.items) {\n                // Add menu items to the menu\n                for (let i = 0; i < this.items.length; i++) {\n                    menu.addItem(this.items[i]);\n                }\n            }\n            return menu;\n        }\n\n        /**\n         * Create the list of menu items. Specific to each subclass.\n         *\n         * @abstract\n         */\n        createItems() {}\n\n        /**\n         * Create the `MenuButtons`s DOM element.\n         *\n         * @return {Element}\n         *         The element that gets created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: this.buildWrapperCSSClass()\n            }, {});\n        }\n\n        /**\n         * Overwrites the `setIcon` method from `Component`.\n         * In this case, we want the icon to be appended to the menuButton.\n         *\n         * @param {string} name\n         *         The icon name to be added.\n         */\n        setIcon(name) {\n            super.setIcon(name, this.menuButton_.el_);\n        }\n\n        /**\n         * Allow sub components to stack CSS class names for the wrapper element\n         *\n         * @return {string}\n         *         The constructed wrapper DOM `className`\n         */\n        buildWrapperCSSClass() {\n            let menuButtonClass = 'vjs-menu-button';\n\n            // If the inline option is passed, we want to use different styles altogether.\n            if (this.options_.inline === true) {\n                menuButtonClass += '-inline';\n            } else {\n                menuButtonClass += '-popup';\n            }\n\n            // TODO: Fix the CSS so that this isn't necessary\n            const buttonClass = Button.prototype.buildCSSClass();\n            return `vjs-menu-button ${menuButtonClass} ${buttonClass} ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            let menuButtonClass = 'vjs-menu-button';\n\n            // If the inline option is passed, we want to use different styles altogether.\n            if (this.options_.inline === true) {\n                menuButtonClass += '-inline';\n            } else {\n                menuButtonClass += '-popup';\n            }\n            return `vjs-menu-button ${menuButtonClass} ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * Get or set the localized control text that will be used for accessibility.\n         *\n         * > NOTE: This will come from the internal `menuButton_` element.\n         *\n         * @param {string} [text]\n         *        Control text for element.\n         *\n         * @param {Element} [el=this.menuButton_.el()]\n         *        Element to set the title on.\n         *\n         * @return {string}\n         *         - The control text when getting\n         */\n        controlText(text, el = this.menuButton_.el()) {\n            return this.menuButton_.controlText(text, el);\n        }\n\n        /**\n         * Dispose of the `menu-button` and all child components.\n         */\n        dispose() {\n            this.handleMouseLeave();\n            super.dispose();\n        }\n\n        /**\n         * Handle a click on a `MenuButton`.\n         * See {@link ClickableComponent#handleClick} for instances where this is called.\n         *\n         * @param {Event} event\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            if (this.buttonPressed_) {\n                this.unpressButton();\n            } else {\n                this.pressButton();\n            }\n        }\n\n        /**\n         * Handle `mouseleave` for `MenuButton`.\n         *\n         * @param {Event} event\n         *        The `mouseleave` event that caused this function to be called.\n         *\n         * @listens mouseleave\n         */\n        handleMouseLeave(event) {\n            this.removeClass('vjs-hover');\n            off(document, 'keyup', this.handleMenuKeyUp_);\n        }\n\n        /**\n         * Set the focus to the actual button, not to this element\n         */\n        focus() {\n            this.menuButton_.focus();\n        }\n\n        /**\n         * Remove the focus from the actual button, not this element\n         */\n        blur() {\n            this.menuButton_.blur();\n        }\n\n        /**\n         * Handle tab, escape, down arrow, and up arrow keys for `MenuButton`. See\n         * {@link ClickableComponent#handleKeyDown} for instances where this is called.\n         *\n         * @param {Event} event\n         *        The `keydown` event that caused this function to be called.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            // Escape or Tab unpress the 'button'\n            if (keycode.isEventKey(event, 'Esc') || keycode.isEventKey(event, 'Tab')) {\n                if (this.buttonPressed_) {\n                    this.unpressButton();\n                }\n\n                // Don't preventDefault for Tab key - we still want to lose focus\n                if (!keycode.isEventKey(event, 'Tab')) {\n                    event.preventDefault();\n                    // Set focus back to the menu button's button\n                    this.menuButton_.focus();\n                }\n                // Up Arrow or Down Arrow also 'press' the button to open the menu\n            } else if (keycode.isEventKey(event, 'Up') || keycode.isEventKey(event, 'Down')) {\n                if (!this.buttonPressed_) {\n                    event.preventDefault();\n                    this.pressButton();\n                }\n            }\n        }\n\n        /**\n         * Handle a `keyup` event on a `MenuButton`. The listener for this is added in\n         * the constructor.\n         *\n         * @param {Event} event\n         *        Key press event\n         *\n         * @listens keyup\n         */\n        handleMenuKeyUp(event) {\n            // Escape hides popup menu\n            if (keycode.isEventKey(event, 'Esc') || keycode.isEventKey(event, 'Tab')) {\n                this.removeClass('vjs-hover');\n            }\n        }\n\n        /**\n         * This method name now delegates to `handleSubmenuKeyDown`. This means\n         * anyone calling `handleSubmenuKeyPress` will not see their method calls\n         * stop working.\n         *\n         * @param {Event} event\n         *        The event that caused this function to be called.\n         */\n        handleSubmenuKeyPress(event) {\n            this.handleSubmenuKeyDown(event);\n        }\n\n        /**\n         * Handle a `keydown` event on a sub-menu. The listener for this is added in\n         * the constructor.\n         *\n         * @param {Event} event\n         *        Key press event\n         *\n         * @listens keydown\n         */\n        handleSubmenuKeyDown(event) {\n            // Escape or Tab unpress the 'button'\n            if (keycode.isEventKey(event, 'Esc') || keycode.isEventKey(event, 'Tab')) {\n                if (this.buttonPressed_) {\n                    this.unpressButton();\n                }\n                // Don't preventDefault for Tab key - we still want to lose focus\n                if (!keycode.isEventKey(event, 'Tab')) {\n                    event.preventDefault();\n                    // Set focus back to the menu button's button\n                    this.menuButton_.focus();\n                }\n            }\n        }\n\n        /**\n         * Put the current `MenuButton` into a pressed state.\n         */\n        pressButton() {\n            if (this.enabled_) {\n                this.buttonPressed_ = true;\n                this.menu.show();\n                this.menu.lockShowing();\n                this.menuButton_.el_.setAttribute('aria-expanded', 'true');\n\n                // set the focus into the submenu, except on iOS where it is resulting in\n                // undesired scrolling behavior when the player is in an iframe\n                if (IS_IOS && isInFrame()) {\n                    // Return early so that the menu isn't focused\n                    return;\n                }\n                this.menu.focus();\n            }\n        }\n\n        /**\n         * Take the current `MenuButton` out of a pressed state.\n         */\n        unpressButton() {\n            if (this.enabled_) {\n                this.buttonPressed_ = false;\n                this.menu.unlockShowing();\n                this.menu.hide();\n                this.menuButton_.el_.setAttribute('aria-expanded', 'false');\n            }\n        }\n\n        /**\n         * Disable the `MenuButton`. Don't allow it to be clicked.\n         */\n        disable() {\n            this.unpressButton();\n            this.enabled_ = false;\n            this.addClass('vjs-disabled');\n            this.menuButton_.disable();\n        }\n\n        /**\n         * Enable the `MenuButton`. Allow it to be clicked.\n         */\n        enable() {\n            this.enabled_ = true;\n            this.removeClass('vjs-disabled');\n            this.menuButton_.enable();\n        }\n    }\n    Component$1.registerComponent('MenuButton', MenuButton);\n\n    /**\n     * @file track-button.js\n     */\n\n    /**\n     * The base class for buttons that toggle specific  track types (e.g. subtitles).\n     *\n     * @extends MenuButton\n     */\n    class TrackButton extends MenuButton {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            const tracks = options.tracks;\n            super(player, options);\n            if (this.items.length <= 1) {\n                this.hide();\n            }\n            if (!tracks) {\n                return;\n            }\n            const updateHandler = bind_(this, this.update);\n            tracks.addEventListener('removetrack', updateHandler);\n            tracks.addEventListener('addtrack', updateHandler);\n            tracks.addEventListener('labelchange', updateHandler);\n            this.player_.on('ready', updateHandler);\n            this.player_.on('dispose', function () {\n                tracks.removeEventListener('removetrack', updateHandler);\n                tracks.removeEventListener('addtrack', updateHandler);\n                tracks.removeEventListener('labelchange', updateHandler);\n            });\n        }\n    }\n    Component$1.registerComponent('TrackButton', TrackButton);\n\n    /**\n     * @file menu-keys.js\n     */\n\n    /**\n     * All keys used for operation of a menu (`MenuButton`, `Menu`, and `MenuItem`)\n     * Note that 'Enter' and 'Space' are not included here (otherwise they would\n     * prevent the `MenuButton` and `MenuItem` from being keyboard-clickable)\n     *\n     * @typedef MenuKeys\n     * @array\n     */\n    const MenuKeys = ['Tab', 'Esc', 'Up', 'Down', 'Right', 'Left'];\n\n    /**\n     * @file menu-item.js\n     */\n\n    /**\n     * The component for a menu item. `<li>`\n     *\n     * @extends ClickableComponent\n     */\n    class MenuItem extends ClickableComponent {\n        /**\n         * Creates an instance of the this class.\n         *\n         * @param { import('../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options={}]\n         *        The key/value store of player options.\n         *\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.selectable = options.selectable;\n            this.isSelected_ = options.selected || false;\n            this.multiSelectable = options.multiSelectable;\n            this.selected(this.isSelected_);\n            if (this.selectable) {\n                if (this.multiSelectable) {\n                    this.el_.setAttribute('role', 'menuitemcheckbox');\n                } else {\n                    this.el_.setAttribute('role', 'menuitemradio');\n                }\n            } else {\n                this.el_.setAttribute('role', 'menuitem');\n            }\n        }\n\n        /**\n         * Create the `MenuItem's DOM element\n         *\n         * @param {string} [type=li]\n         *        Element's node type, not actually used, always set to `li`.\n         *\n         * @param {Object} [props={}]\n         *        An object of properties that should be set on the element\n         *\n         * @param {Object} [attrs={}]\n         *        An object of attributes that should be set on the element\n         *\n         * @return {Element}\n         *         The element that gets created.\n         */\n        createEl(type, props, attrs) {\n            // The control is textual, not just an icon\n            this.nonIconControl = true;\n            const el = super.createEl('li', Object.assign({\n                className: 'vjs-menu-item',\n                tabIndex: -1\n            }, props), attrs);\n\n            // swap icon with menu item text.\n            const menuItemEl = createEl('span', {\n                className: 'vjs-menu-item-text',\n                textContent: this.localize(this.options_.label)\n            });\n\n            // If using SVG icons, the element with vjs-icon-placeholder will be added separately.\n            if (this.player_.options_.experimentalSvgIcons) {\n                el.appendChild(menuItemEl);\n            } else {\n                el.replaceChild(menuItemEl, el.querySelector('.vjs-icon-placeholder'));\n            }\n            return el;\n        }\n\n        /**\n         * Ignore keys which are used by the menu, but pass any other ones up. See\n         * {@link ClickableComponent#handleKeyDown} for instances where this is called.\n         *\n         * @param {KeyboardEvent} event\n         *        The `keydown` event that caused this function to be called.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            if (!MenuKeys.some(key => keycode.isEventKey(event, key))) {\n                // Pass keydown handling up for unused keys\n                super.handleKeyDown(event);\n            }\n        }\n\n        /**\n         * Any click on a `MenuItem` puts it into the selected state.\n         * See {@link ClickableComponent#handleClick} for instances where this is called.\n         *\n         * @param {Event} event\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            this.selected(true);\n        }\n\n        /**\n         * Set the state for this menu item as selected or not.\n         *\n         * @param {boolean} selected\n         *        if the menu item is selected or not\n         */\n        selected(selected) {\n            if (this.selectable) {\n                if (selected) {\n                    this.addClass('vjs-selected');\n                    this.el_.setAttribute('aria-checked', 'true');\n                    // aria-checked isn't fully supported by browsers/screen readers,\n                    // so indicate selected state to screen reader in the control text.\n                    this.controlText(', selected');\n                    this.isSelected_ = true;\n                } else {\n                    this.removeClass('vjs-selected');\n                    this.el_.setAttribute('aria-checked', 'false');\n                    // Indicate un-selected state to screen reader\n                    this.controlText('');\n                    this.isSelected_ = false;\n                }\n            }\n        }\n    }\n    Component$1.registerComponent('MenuItem', MenuItem);\n\n    /**\n     * @file text-track-menu-item.js\n     */\n\n    /**\n     * The specific menu item type for selecting a language within a text track kind\n     *\n     * @extends MenuItem\n     */\n    class TextTrackMenuItem extends MenuItem {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            const track = options.track;\n            const tracks = player.textTracks();\n\n            // Modify options for parent MenuItem class's init.\n            options.label = track.label || track.language || 'Unknown';\n            options.selected = track.mode === 'showing';\n            super(player, options);\n            this.track = track;\n            // Determine the relevant kind(s) of tracks for this component and filter\n            // out empty kinds.\n            this.kinds = (options.kinds || [options.kind || this.track.kind]).filter(Boolean);\n            const changeHandler = (...args) => {\n                this.handleTracksChange.apply(this, args);\n            };\n            const selectedLanguageChangeHandler = (...args) => {\n                this.handleSelectedLanguageChange.apply(this, args);\n            };\n            player.on(['loadstart', 'texttrackchange'], changeHandler);\n            tracks.addEventListener('change', changeHandler);\n            tracks.addEventListener('selectedlanguagechange', selectedLanguageChangeHandler);\n            this.on('dispose', function () {\n                player.off(['loadstart', 'texttrackchange'], changeHandler);\n                tracks.removeEventListener('change', changeHandler);\n                tracks.removeEventListener('selectedlanguagechange', selectedLanguageChangeHandler);\n            });\n\n            // iOS7 doesn't dispatch change events to TextTrackLists when an\n            // associated track's mode changes. Without something like\n            // Object.observe() (also not present on iOS7), it's not\n            // possible to detect changes to the mode attribute and polyfill\n            // the change event. As a poor substitute, we manually dispatch\n            // change events whenever the controls modify the mode.\n            if (tracks.onchange === undefined) {\n                let event;\n                this.on(['tap', 'click'], function () {\n                    if (typeof window.Event !== 'object') {\n                        // Android 2.3 throws an Illegal Constructor error for window.Event\n                        try {\n                            event = new window.Event('change');\n                        } catch (err) {\n                            // continue regardless of error\n                        }\n                    }\n                    if (!event) {\n                        event = document.createEvent('Event');\n                        event.initEvent('change', true, true);\n                    }\n                    tracks.dispatchEvent(event);\n                });\n            }\n\n            // set the default state based on current tracks\n            this.handleTracksChange();\n        }\n\n        /**\n         * This gets called when an `TextTrackMenuItem` is \"clicked\". See\n         * {@link ClickableComponent} for more detailed information on what a click can be.\n         *\n         * @param {Event} event\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            const referenceTrack = this.track;\n            const tracks = this.player_.textTracks();\n            super.handleClick(event);\n            if (!tracks) {\n                return;\n            }\n            for (let i = 0; i < tracks.length; i++) {\n                const track = tracks[i];\n\n                // If the track from the text tracks list is not of the right kind,\n                // skip it. We do not want to affect tracks of incompatible kind(s).\n                if (this.kinds.indexOf(track.kind) === -1) {\n                    continue;\n                }\n\n                // If this text track is the component's track and it is not showing,\n                // set it to showing.\n                if (track === referenceTrack) {\n                    if (track.mode !== 'showing') {\n                        track.mode = 'showing';\n                    }\n\n                    // If this text track is not the component's track and it is not\n                    // disabled, set it to disabled.\n                } else if (track.mode !== 'disabled') {\n                    track.mode = 'disabled';\n                }\n            }\n        }\n\n        /**\n         * Handle text track list change\n         *\n         * @param {Event} event\n         *        The `change` event that caused this function to be called.\n         *\n         * @listens TextTrackList#change\n         */\n        handleTracksChange(event) {\n            const shouldBeSelected = this.track.mode === 'showing';\n\n            // Prevent redundant selected() calls because they may cause\n            // screen readers to read the appended control text unnecessarily\n            if (shouldBeSelected !== this.isSelected_) {\n                this.selected(shouldBeSelected);\n            }\n        }\n        handleSelectedLanguageChange(event) {\n            if (this.track.mode === 'showing') {\n                const selectedLanguage = this.player_.cache_.selectedLanguage;\n\n                // Don't replace the kind of track across the same language\n                if (selectedLanguage && selectedLanguage.enabled && selectedLanguage.language === this.track.language && selectedLanguage.kind !== this.track.kind) {\n                    return;\n                }\n                this.player_.cache_.selectedLanguage = {\n                    enabled: true,\n                    language: this.track.language,\n                    kind: this.track.kind\n                };\n            }\n        }\n        dispose() {\n            // remove reference to track object on dispose\n            this.track = null;\n            super.dispose();\n        }\n    }\n    Component$1.registerComponent('TextTrackMenuItem', TextTrackMenuItem);\n\n    /**\n     * @file off-text-track-menu-item.js\n     */\n\n    /**\n     * A special menu item for turning off a specific type of text track\n     *\n     * @extends TextTrackMenuItem\n     */\n    class OffTextTrackMenuItem extends TextTrackMenuItem {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            // Create pseudo track info\n            // Requires options['kind']\n            options.track = {\n                player,\n                // it is no longer necessary to store `kind` or `kinds` on the track itself\n                // since they are now stored in the `kinds` property of all instances of\n                // TextTrackMenuItem, but this will remain for backwards compatibility\n                kind: options.kind,\n                kinds: options.kinds,\n                default: false,\n                mode: 'disabled'\n            };\n            if (!options.kinds) {\n                options.kinds = [options.kind];\n            }\n            if (options.label) {\n                options.track.label = options.label;\n            } else {\n                options.track.label = options.kinds.join(' and ') + ' off';\n            }\n\n            // MenuItem is selectable\n            options.selectable = true;\n            // MenuItem is NOT multiSelectable (i.e. only one can be marked \"selected\" at a time)\n            options.multiSelectable = false;\n            super(player, options);\n        }\n\n        /**\n         * Handle text track change\n         *\n         * @param {Event} event\n         *        The event that caused this function to run\n         */\n        handleTracksChange(event) {\n            const tracks = this.player().textTracks();\n            let shouldBeSelected = true;\n            for (let i = 0, l = tracks.length; i < l; i++) {\n                const track = tracks[i];\n                if (this.options_.kinds.indexOf(track.kind) > -1 && track.mode === 'showing') {\n                    shouldBeSelected = false;\n                    break;\n                }\n            }\n\n            // Prevent redundant selected() calls because they may cause\n            // screen readers to read the appended control text unnecessarily\n            if (shouldBeSelected !== this.isSelected_) {\n                this.selected(shouldBeSelected);\n            }\n        }\n        handleSelectedLanguageChange(event) {\n            const tracks = this.player().textTracks();\n            let allHidden = true;\n            for (let i = 0, l = tracks.length; i < l; i++) {\n                const track = tracks[i];\n                if (['captions', 'descriptions', 'subtitles'].indexOf(track.kind) > -1 && track.mode === 'showing') {\n                    allHidden = false;\n                    break;\n                }\n            }\n            if (allHidden) {\n                this.player_.cache_.selectedLanguage = {\n                    enabled: false\n                };\n            }\n        }\n\n        /**\n         * Update control text and label on languagechange\n         */\n        handleLanguagechange() {\n            this.$('.vjs-menu-item-text').textContent = this.player_.localize(this.options_.label);\n            super.handleLanguagechange();\n        }\n    }\n    Component$1.registerComponent('OffTextTrackMenuItem', OffTextTrackMenuItem);\n\n    /**\n     * @file text-track-button.js\n     */\n\n    /**\n     * The base class for buttons that toggle specific text track types (e.g. subtitles)\n     *\n     * @extends MenuButton\n     */\n    class TextTrackButton extends TrackButton {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options={}]\n         *        The key/value store of player options.\n         */\n        constructor(player, options = {}) {\n            options.tracks = player.textTracks();\n            super(player, options);\n        }\n\n        /**\n         * Create a menu item for each text track\n         *\n         * @param {TextTrackMenuItem[]} [items=[]]\n         *        Existing array of items to use during creation\n         *\n         * @return {TextTrackMenuItem[]}\n         *         Array of menu items that were created\n         */\n        createItems(items = [], TrackMenuItem = TextTrackMenuItem) {\n            // Label is an override for the [track] off label\n            // USed to localise captions/subtitles\n            let label;\n            if (this.label_) {\n                label = `${this.label_} off`;\n            }\n            // Add an OFF menu item to turn all tracks off\n            items.push(new OffTextTrackMenuItem(this.player_, {\n                kinds: this.kinds_,\n                kind: this.kind_,\n                label\n            }));\n            this.hideThreshold_ += 1;\n            const tracks = this.player_.textTracks();\n            if (!Array.isArray(this.kinds_)) {\n                this.kinds_ = [this.kind_];\n            }\n            for (let i = 0; i < tracks.length; i++) {\n                const track = tracks[i];\n\n                // only add tracks that are of an appropriate kind and have a label\n                if (this.kinds_.indexOf(track.kind) > -1) {\n                    const item = new TrackMenuItem(this.player_, {\n                        track,\n                        kinds: this.kinds_,\n                        kind: this.kind_,\n                        // MenuItem is selectable\n                        selectable: true,\n                        // MenuItem is NOT multiSelectable (i.e. only one can be marked \"selected\" at a time)\n                        multiSelectable: false\n                    });\n                    item.addClass(`vjs-${track.kind}-menu-item`);\n                    items.push(item);\n                }\n            }\n            return items;\n        }\n    }\n    Component$1.registerComponent('TextTrackButton', TextTrackButton);\n\n    /**\n     * @file chapters-track-menu-item.js\n     */\n\n    /**\n     * The chapter track menu item\n     *\n     * @extends MenuItem\n     */\n    class ChaptersTrackMenuItem extends MenuItem {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            const track = options.track;\n            const cue = options.cue;\n            const currentTime = player.currentTime();\n\n            // Modify options for parent MenuItem class's init.\n            options.selectable = true;\n            options.multiSelectable = false;\n            options.label = cue.text;\n            options.selected = cue.startTime <= currentTime && currentTime < cue.endTime;\n            super(player, options);\n            this.track = track;\n            this.cue = cue;\n        }\n\n        /**\n         * This gets called when an `ChaptersTrackMenuItem` is \"clicked\". See\n         * {@link ClickableComponent} for more detailed information on what a click can be.\n         *\n         * @param {Event} [event]\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            super.handleClick();\n            this.player_.currentTime(this.cue.startTime);\n        }\n    }\n    Component$1.registerComponent('ChaptersTrackMenuItem', ChaptersTrackMenuItem);\n\n    /**\n     * @file chapters-button.js\n     */\n\n    /**\n     * The button component for toggling and selecting chapters\n     * Chapters act much differently than other text tracks\n     * Cues are navigation vs. other tracks of alternative languages\n     *\n     * @extends TextTrackButton\n     */\n    class ChaptersButton extends TextTrackButton {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {Function} [ready]\n         *        The function to call when this function is ready.\n         */\n        constructor(player, options, ready) {\n            super(player, options, ready);\n            this.setIcon('chapters');\n            this.selectCurrentItem_ = () => {\n                this.items.forEach(item => {\n                    item.selected(this.track_.activeCues[0] === item.cue);\n                });\n            };\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-chapters-button ${super.buildCSSClass()}`;\n        }\n        buildWrapperCSSClass() {\n            return `vjs-chapters-button ${super.buildWrapperCSSClass()}`;\n        }\n\n        /**\n         * Update the menu based on the current state of its items.\n         *\n         * @param {Event} [event]\n         *        An event that triggered this function to run.\n         *\n         * @listens TextTrackList#addtrack\n         * @listens TextTrackList#removetrack\n         * @listens TextTrackList#change\n         */\n        update(event) {\n            if (event && event.track && event.track.kind !== 'chapters') {\n                return;\n            }\n            const track = this.findChaptersTrack();\n            if (track !== this.track_) {\n                this.setTrack(track);\n                super.update();\n            } else if (!this.items || track && track.cues && track.cues.length !== this.items.length) {\n                // Update the menu initially or if the number of cues has changed since set\n                super.update();\n            }\n        }\n\n        /**\n         * Set the currently selected track for the chapters button.\n         *\n         * @param {TextTrack} track\n         *        The new track to select. Nothing will change if this is the currently selected\n         *        track.\n         */\n        setTrack(track) {\n            if (this.track_ === track) {\n                return;\n            }\n            if (!this.updateHandler_) {\n                this.updateHandler_ = this.update.bind(this);\n            }\n\n            // here this.track_ refers to the old track instance\n            if (this.track_) {\n                const remoteTextTrackEl = this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);\n                if (remoteTextTrackEl) {\n                    remoteTextTrackEl.removeEventListener('load', this.updateHandler_);\n                }\n                this.track_.removeEventListener('cuechange', this.selectCurrentItem_);\n                this.track_ = null;\n            }\n            this.track_ = track;\n\n            // here this.track_ refers to the new track instance\n            if (this.track_) {\n                this.track_.mode = 'hidden';\n                const remoteTextTrackEl = this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);\n                if (remoteTextTrackEl) {\n                    remoteTextTrackEl.addEventListener('load', this.updateHandler_);\n                }\n                this.track_.addEventListener('cuechange', this.selectCurrentItem_);\n            }\n        }\n\n        /**\n         * Find the track object that is currently in use by this ChaptersButton\n         *\n         * @return {TextTrack|undefined}\n         *         The current track or undefined if none was found.\n         */\n        findChaptersTrack() {\n            const tracks = this.player_.textTracks() || [];\n            for (let i = tracks.length - 1; i >= 0; i--) {\n                // We will always choose the last track as our chaptersTrack\n                const track = tracks[i];\n                if (track.kind === this.kind_) {\n                    return track;\n                }\n            }\n        }\n\n        /**\n         * Get the caption for the ChaptersButton based on the track label. This will also\n         * use the current tracks localized kind as a fallback if a label does not exist.\n         *\n         * @return {string}\n         *         The tracks current label or the localized track kind.\n         */\n        getMenuCaption() {\n            if (this.track_ && this.track_.label) {\n                return this.track_.label;\n            }\n            return this.localize(toTitleCase$1(this.kind_));\n        }\n\n        /**\n         * Create menu from chapter track\n         *\n         * @return { import('../../menu/menu').default }\n         *         New menu for the chapter buttons\n         */\n        createMenu() {\n            this.options_.title = this.getMenuCaption();\n            return super.createMenu();\n        }\n\n        /**\n         * Create a menu item for each text track\n         *\n         * @return  { import('./text-track-menu-item').default[] }\n         *         Array of menu items\n         */\n        createItems() {\n            const items = [];\n            if (!this.track_) {\n                return items;\n            }\n            const cues = this.track_.cues;\n            if (!cues) {\n                return items;\n            }\n            for (let i = 0, l = cues.length; i < l; i++) {\n                const cue = cues[i];\n                const mi = new ChaptersTrackMenuItem(this.player_, {\n                    track: this.track_,\n                    cue\n                });\n                items.push(mi);\n            }\n            return items;\n        }\n    }\n\n    /**\n     * `kind` of TextTrack to look for to associate it with this menu.\n     *\n     * @type {string}\n     * @private\n     */\n    ChaptersButton.prototype.kind_ = 'chapters';\n\n    /**\n     * The text that should display over the `ChaptersButton`s controls. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    ChaptersButton.prototype.controlText_ = 'Chapters';\n    Component$1.registerComponent('ChaptersButton', ChaptersButton);\n\n    /**\n     * @file descriptions-button.js\n     */\n\n    /**\n     * The button component for toggling and selecting descriptions\n     *\n     * @extends TextTrackButton\n     */\n    class DescriptionsButton extends TextTrackButton {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {Function} [ready]\n         *        The function to call when this component is ready.\n         */\n        constructor(player, options, ready) {\n            super(player, options, ready);\n            this.setIcon('audio-description');\n            const tracks = player.textTracks();\n            const changeHandler = bind_(this, this.handleTracksChange);\n            tracks.addEventListener('change', changeHandler);\n            this.on('dispose', function () {\n                tracks.removeEventListener('change', changeHandler);\n            });\n        }\n\n        /**\n         * Handle text track change\n         *\n         * @param {Event} event\n         *        The event that caused this function to run\n         *\n         * @listens TextTrackList#change\n         */\n        handleTracksChange(event) {\n            const tracks = this.player().textTracks();\n            let disabled = false;\n\n            // Check whether a track of a different kind is showing\n            for (let i = 0, l = tracks.length; i < l; i++) {\n                const track = tracks[i];\n                if (track.kind !== this.kind_ && track.mode === 'showing') {\n                    disabled = true;\n                    break;\n                }\n            }\n\n            // If another track is showing, disable this menu button\n            if (disabled) {\n                this.disable();\n            } else {\n                this.enable();\n            }\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-descriptions-button ${super.buildCSSClass()}`;\n        }\n        buildWrapperCSSClass() {\n            return `vjs-descriptions-button ${super.buildWrapperCSSClass()}`;\n        }\n    }\n\n    /**\n     * `kind` of TextTrack to look for to associate it with this menu.\n     *\n     * @type {string}\n     * @private\n     */\n    DescriptionsButton.prototype.kind_ = 'descriptions';\n\n    /**\n     * The text that should display over the `DescriptionsButton`s controls. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    DescriptionsButton.prototype.controlText_ = 'Descriptions';\n    Component$1.registerComponent('DescriptionsButton', DescriptionsButton);\n\n    /**\n     * @file subtitles-button.js\n     */\n\n    /**\n     * The button component for toggling and selecting subtitles\n     *\n     * @extends TextTrackButton\n     */\n    class SubtitlesButton extends TextTrackButton {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {Function} [ready]\n         *        The function to call when this component is ready.\n         */\n        constructor(player, options, ready) {\n            super(player, options, ready);\n            this.setIcon('subtitles');\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-subtitles-button ${super.buildCSSClass()}`;\n        }\n        buildWrapperCSSClass() {\n            return `vjs-subtitles-button ${super.buildWrapperCSSClass()}`;\n        }\n    }\n\n    /**\n     * `kind` of TextTrack to look for to associate it with this menu.\n     *\n     * @type {string}\n     * @private\n     */\n    SubtitlesButton.prototype.kind_ = 'subtitles';\n\n    /**\n     * The text that should display over the `SubtitlesButton`s controls. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    SubtitlesButton.prototype.controlText_ = 'Subtitles';\n    Component$1.registerComponent('SubtitlesButton', SubtitlesButton);\n\n    /**\n     * @file caption-settings-menu-item.js\n     */\n\n    /**\n     * The menu item for caption track settings menu\n     *\n     * @extends TextTrackMenuItem\n     */\n    class CaptionSettingsMenuItem extends TextTrackMenuItem {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            options.track = {\n                player,\n                kind: options.kind,\n                label: options.kind + ' settings',\n                selectable: false,\n                default: false,\n                mode: 'disabled'\n            };\n\n            // CaptionSettingsMenuItem has no concept of 'selected'\n            options.selectable = false;\n            options.name = 'CaptionSettingsMenuItem';\n            super(player, options);\n            this.addClass('vjs-texttrack-settings');\n            this.controlText(', opens ' + options.kind + ' settings dialog');\n        }\n\n        /**\n         * This gets called when an `CaptionSettingsMenuItem` is \"clicked\". See\n         * {@link ClickableComponent} for more detailed information on what a click can be.\n         *\n         * @param {Event} [event]\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            this.player().getChild('textTrackSettings').open();\n        }\n\n        /**\n         * Update control text and label on languagechange\n         */\n        handleLanguagechange() {\n            this.$('.vjs-menu-item-text').textContent = this.player_.localize(this.options_.kind + ' settings');\n            super.handleLanguagechange();\n        }\n    }\n    Component$1.registerComponent('CaptionSettingsMenuItem', CaptionSettingsMenuItem);\n\n    /**\n     * @file captions-button.js\n     */\n\n    /**\n     * The button component for toggling and selecting captions\n     *\n     * @extends TextTrackButton\n     */\n    class CaptionsButton extends TextTrackButton {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {Function} [ready]\n         *        The function to call when this component is ready.\n         */\n        constructor(player, options, ready) {\n            super(player, options, ready);\n            this.setIcon('captions');\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-captions-button ${super.buildCSSClass()}`;\n        }\n        buildWrapperCSSClass() {\n            return `vjs-captions-button ${super.buildWrapperCSSClass()}`;\n        }\n\n        /**\n         * Create caption menu items\n         *\n         * @return {CaptionSettingsMenuItem[]}\n         *         The array of current menu items.\n         */\n        createItems() {\n            const items = [];\n            if (!(this.player().tech_ && this.player().tech_.featuresNativeTextTracks) && this.player().getChild('textTrackSettings')) {\n                items.push(new CaptionSettingsMenuItem(this.player_, {\n                    kind: this.kind_\n                }));\n                this.hideThreshold_ += 1;\n            }\n            return super.createItems(items);\n        }\n    }\n\n    /**\n     * `kind` of TextTrack to look for to associate it with this menu.\n     *\n     * @type {string}\n     * @private\n     */\n    CaptionsButton.prototype.kind_ = 'captions';\n\n    /**\n     * The text that should display over the `CaptionsButton`s controls. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    CaptionsButton.prototype.controlText_ = 'Captions';\n    Component$1.registerComponent('CaptionsButton', CaptionsButton);\n\n    /**\n     * @file subs-caps-menu-item.js\n     */\n\n    /**\n     * SubsCapsMenuItem has an [cc] icon to distinguish captions from subtitles\n     * in the SubsCapsMenu.\n     *\n     * @extends TextTrackMenuItem\n     */\n    class SubsCapsMenuItem extends TextTrackMenuItem {\n        createEl(type, props, attrs) {\n            const el = super.createEl(type, props, attrs);\n            const parentSpan = el.querySelector('.vjs-menu-item-text');\n            if (this.options_.track.kind === 'captions') {\n                if (this.player_.options_.experimentalSvgIcons) {\n                    this.setIcon('captions', el);\n                } else {\n                    parentSpan.appendChild(createEl('span', {\n                        className: 'vjs-icon-placeholder'\n                    }, {\n                        'aria-hidden': true\n                    }));\n                }\n                parentSpan.appendChild(createEl('span', {\n                    className: 'vjs-control-text',\n                    // space added as the text will visually flow with the\n                    // label\n                    textContent: ` ${this.localize('Captions')}`\n                }));\n            }\n            return el;\n        }\n    }\n    Component$1.registerComponent('SubsCapsMenuItem', SubsCapsMenuItem);\n\n    /**\n     * @file sub-caps-button.js\n     */\n\n    /**\n     * The button component for toggling and selecting captions and/or subtitles\n     *\n     * @extends TextTrackButton\n     */\n    class SubsCapsButton extends TextTrackButton {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {Function} [ready]\n         *        The function to call when this component is ready.\n         */\n        constructor(player, options = {}) {\n            super(player, options);\n\n            // Although North America uses \"captions\" in most cases for\n            // \"captions and subtitles\" other locales use \"subtitles\"\n            this.label_ = 'subtitles';\n            this.setIcon('subtitles');\n            if (['en', 'en-us', 'en-ca', 'fr-ca'].indexOf(this.player_.language_) > -1) {\n                this.label_ = 'captions';\n                this.setIcon('captions');\n            }\n            this.menuButton_.controlText(toTitleCase$1(this.label_));\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-subs-caps-button ${super.buildCSSClass()}`;\n        }\n        buildWrapperCSSClass() {\n            return `vjs-subs-caps-button ${super.buildWrapperCSSClass()}`;\n        }\n\n        /**\n         * Create caption/subtitles menu items\n         *\n         * @return {CaptionSettingsMenuItem[]}\n         *         The array of current menu items.\n         */\n        createItems() {\n            let items = [];\n            if (!(this.player().tech_ && this.player().tech_.featuresNativeTextTracks) && this.player().getChild('textTrackSettings')) {\n                items.push(new CaptionSettingsMenuItem(this.player_, {\n                    kind: this.label_\n                }));\n                this.hideThreshold_ += 1;\n            }\n            items = super.createItems(items, SubsCapsMenuItem);\n            return items;\n        }\n    }\n\n    /**\n     * `kind`s of TextTrack to look for to associate it with this menu.\n     *\n     * @type {array}\n     * @private\n     */\n    SubsCapsButton.prototype.kinds_ = ['captions', 'subtitles'];\n\n    /**\n     * The text that should display over the `SubsCapsButton`s controls.\n     *\n     *\n     * @type {string}\n     * @protected\n     */\n    SubsCapsButton.prototype.controlText_ = 'Subtitles';\n    Component$1.registerComponent('SubsCapsButton', SubsCapsButton);\n\n    /**\n     * @file audio-track-menu-item.js\n     */\n\n    /**\n     * An {@link AudioTrack} {@link MenuItem}\n     *\n     * @extends MenuItem\n     */\n    class AudioTrackMenuItem extends MenuItem {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            const track = options.track;\n            const tracks = player.audioTracks();\n\n            // Modify options for parent MenuItem class's init.\n            options.label = track.label || track.language || 'Unknown';\n            options.selected = track.enabled;\n            super(player, options);\n            this.track = track;\n            this.addClass(`vjs-${track.kind}-menu-item`);\n            const changeHandler = (...args) => {\n                this.handleTracksChange.apply(this, args);\n            };\n            tracks.addEventListener('change', changeHandler);\n            this.on('dispose', () => {\n                tracks.removeEventListener('change', changeHandler);\n            });\n        }\n        createEl(type, props, attrs) {\n            const el = super.createEl(type, props, attrs);\n            const parentSpan = el.querySelector('.vjs-menu-item-text');\n            if (['main-desc', 'description'].indexOf(this.options_.track.kind) >= 0) {\n                parentSpan.appendChild(createEl('span', {\n                    className: 'vjs-icon-placeholder'\n                }, {\n                    'aria-hidden': true\n                }));\n                parentSpan.appendChild(createEl('span', {\n                    className: 'vjs-control-text',\n                    textContent: ' ' + this.localize('Descriptions')\n                }));\n            }\n            return el;\n        }\n\n        /**\n         * This gets called when an `AudioTrackMenuItem is \"clicked\". See {@link ClickableComponent}\n         * for more detailed information on what a click can be.\n         *\n         * @param {Event} [event]\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            super.handleClick(event);\n\n            // the audio track list will automatically toggle other tracks\n            // off for us.\n            this.track.enabled = true;\n\n            // when native audio tracks are used, we want to make sure that other tracks are turned off\n            if (this.player_.tech_.featuresNativeAudioTracks) {\n                const tracks = this.player_.audioTracks();\n                for (let i = 0; i < tracks.length; i++) {\n                    const track = tracks[i];\n\n                    // skip the current track since we enabled it above\n                    if (track === this.track) {\n                        continue;\n                    }\n                    track.enabled = track === this.track;\n                }\n            }\n        }\n\n        /**\n         * Handle any {@link AudioTrack} change.\n         *\n         * @param {Event} [event]\n         *        The {@link AudioTrackList#change} event that caused this to run.\n         *\n         * @listens AudioTrackList#change\n         */\n        handleTracksChange(event) {\n            this.selected(this.track.enabled);\n        }\n    }\n    Component$1.registerComponent('AudioTrackMenuItem', AudioTrackMenuItem);\n\n    /**\n     * @file audio-track-button.js\n     */\n\n    /**\n     * The base class for buttons that toggle specific {@link AudioTrack} types.\n     *\n     * @extends TrackButton\n     */\n    class AudioTrackButton extends TrackButton {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param {Player} player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options={}]\n         *        The key/value store of player options.\n         */\n        constructor(player, options = {}) {\n            options.tracks = player.audioTracks();\n            super(player, options);\n            this.setIcon('audio');\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-audio-button ${super.buildCSSClass()}`;\n        }\n        buildWrapperCSSClass() {\n            return `vjs-audio-button ${super.buildWrapperCSSClass()}`;\n        }\n\n        /**\n         * Create a menu item for each audio track\n         *\n         * @param {AudioTrackMenuItem[]} [items=[]]\n         *        An array of existing menu items to use.\n         *\n         * @return {AudioTrackMenuItem[]}\n         *         An array of menu items\n         */\n        createItems(items = []) {\n            // if there's only one audio track, there no point in showing it\n            this.hideThreshold_ = 1;\n            const tracks = this.player_.audioTracks();\n            for (let i = 0; i < tracks.length; i++) {\n                const track = tracks[i];\n                items.push(new AudioTrackMenuItem(this.player_, {\n                    track,\n                    // MenuItem is selectable\n                    selectable: true,\n                    // MenuItem is NOT multiSelectable (i.e. only one can be marked \"selected\" at a time)\n                    multiSelectable: false\n                }));\n            }\n            return items;\n        }\n    }\n\n    /**\n     * The text that should display over the `AudioTrackButton`s controls. Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    AudioTrackButton.prototype.controlText_ = 'Audio Track';\n    Component$1.registerComponent('AudioTrackButton', AudioTrackButton);\n\n    /**\n     * @file playback-rate-menu-item.js\n     */\n\n    /**\n     * The specific menu item type for selecting a playback rate.\n     *\n     * @extends MenuItem\n     */\n    class PlaybackRateMenuItem extends MenuItem {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            const label = options.rate;\n            const rate = parseFloat(label, 10);\n\n            // Modify options for parent MenuItem class's init.\n            options.label = label;\n            options.selected = rate === player.playbackRate();\n            options.selectable = true;\n            options.multiSelectable = false;\n            super(player, options);\n            this.label = label;\n            this.rate = rate;\n            this.on(player, 'ratechange', e => this.update(e));\n        }\n\n        /**\n         * This gets called when an `PlaybackRateMenuItem` is \"clicked\". See\n         * {@link ClickableComponent} for more detailed information on what a click can be.\n         *\n         * @param {Event} [event]\n         *        The `keydown`, `tap`, or `click` event that caused this function to be\n         *        called.\n         *\n         * @listens tap\n         * @listens click\n         */\n        handleClick(event) {\n            super.handleClick();\n            this.player().playbackRate(this.rate);\n        }\n\n        /**\n         * Update the PlaybackRateMenuItem when the playbackrate changes.\n         *\n         * @param {Event} [event]\n         *        The `ratechange` event that caused this function to run.\n         *\n         * @listens Player#ratechange\n         */\n        update(event) {\n            this.selected(this.player().playbackRate() === this.rate);\n        }\n    }\n\n    /**\n     * The text that should display over the `PlaybackRateMenuItem`s controls. Added for localization.\n     *\n     * @type {string}\n     * @private\n     */\n    PlaybackRateMenuItem.prototype.contentElType = 'button';\n    Component$1.registerComponent('PlaybackRateMenuItem', PlaybackRateMenuItem);\n\n    /**\n     * @file playback-rate-menu-button.js\n     */\n\n    /**\n     * The component for controlling the playback rate.\n     *\n     * @extends MenuButton\n     */\n    class PlaybackRateMenuButton extends MenuButton {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../../player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.menuButton_.el_.setAttribute('aria-describedby', this.labelElId_);\n            this.updateVisibility();\n            this.updateLabel();\n            this.on(player, 'loadstart', e => this.updateVisibility(e));\n            this.on(player, 'ratechange', e => this.updateLabel(e));\n            this.on(player, 'playbackrateschange', e => this.handlePlaybackRateschange(e));\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            const el = super.createEl();\n            this.labelElId_ = 'vjs-playback-rate-value-label-' + this.id_;\n            this.labelEl_ = createEl('div', {\n                className: 'vjs-playback-rate-value',\n                id: this.labelElId_,\n                textContent: '1x'\n            });\n            el.appendChild(this.labelEl_);\n            return el;\n        }\n        dispose() {\n            this.labelEl_ = null;\n            super.dispose();\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-playback-rate ${super.buildCSSClass()}`;\n        }\n        buildWrapperCSSClass() {\n            return `vjs-playback-rate ${super.buildWrapperCSSClass()}`;\n        }\n\n        /**\n         * Create the list of menu items. Specific to each subclass.\n         *\n         */\n        createItems() {\n            const rates = this.playbackRates();\n            const items = [];\n            for (let i = rates.length - 1; i >= 0; i--) {\n                items.push(new PlaybackRateMenuItem(this.player(), {\n                    rate: rates[i] + 'x'\n                }));\n            }\n            return items;\n        }\n\n        /**\n         * On playbackrateschange, update the menu to account for the new items.\n         *\n         * @listens Player#playbackrateschange\n         */\n        handlePlaybackRateschange(event) {\n            this.update();\n        }\n\n        /**\n         * Get possible playback rates\n         *\n         * @return {Array}\n         *         All possible playback rates\n         */\n        playbackRates() {\n            const player = this.player();\n            return player.playbackRates && player.playbackRates() || [];\n        }\n\n        /**\n         * Get whether playback rates is supported by the tech\n         * and an array of playback rates exists\n         *\n         * @return {boolean}\n         *         Whether changing playback rate is supported\n         */\n        playbackRateSupported() {\n            return this.player().tech_ && this.player().tech_.featuresPlaybackRate && this.playbackRates() && this.playbackRates().length > 0;\n        }\n\n        /**\n         * Hide playback rate controls when they're no playback rate options to select\n         *\n         * @param {Event} [event]\n         *        The event that caused this function to run.\n         *\n         * @listens Player#loadstart\n         */\n        updateVisibility(event) {\n            if (this.playbackRateSupported()) {\n                this.removeClass('vjs-hidden');\n            } else {\n                this.addClass('vjs-hidden');\n            }\n        }\n\n        /**\n         * Update button label when rate changed\n         *\n         * @param {Event} [event]\n         *        The event that caused this function to run.\n         *\n         * @listens Player#ratechange\n         */\n        updateLabel(event) {\n            if (this.playbackRateSupported()) {\n                this.labelEl_.textContent = this.player().playbackRate() + 'x';\n            }\n        }\n    }\n\n    /**\n     * The text that should display over the `PlaybackRateMenuButton`s controls.\n     *\n     * Added for localization.\n     *\n     * @type {string}\n     * @protected\n     */\n    PlaybackRateMenuButton.prototype.controlText_ = 'Playback Rate';\n    Component$1.registerComponent('PlaybackRateMenuButton', PlaybackRateMenuButton);\n\n    /**\n     * @file spacer.js\n     */\n\n    /**\n     * Just an empty spacer element that can be used as an append point for plugins, etc.\n     * Also can be used to create space between elements when necessary.\n     *\n     * @extends Component\n     */\n    class Spacer extends Component$1 {\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-spacer ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl(tag = 'div', props = {}, attributes = {}) {\n            if (!props.className) {\n                props.className = this.buildCSSClass();\n            }\n            return super.createEl(tag, props, attributes);\n        }\n    }\n    Component$1.registerComponent('Spacer', Spacer);\n\n    /**\n     * @file custom-control-spacer.js\n     */\n\n    /**\n     * Spacer specifically meant to be used as an insertion point for new plugins, etc.\n     *\n     * @extends Spacer\n     */\n    class CustomControlSpacer extends Spacer {\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         */\n        buildCSSClass() {\n            return `vjs-custom-control-spacer ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: this.buildCSSClass(),\n                // No-flex/table-cell mode requires there be some content\n                // in the cell to fill the remaining space of the table.\n                textContent: '\\u00a0'\n            });\n        }\n    }\n    Component$1.registerComponent('CustomControlSpacer', CustomControlSpacer);\n\n    /**\n     * @file control-bar.js\n     */\n\n    /**\n     * Container of main controls.\n     *\n     * @extends Component\n     */\n    class ControlBar extends Component$1 {\n        /**\n         * Create the `Component`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            return super.createEl('div', {\n                className: 'vjs-control-bar',\n                dir: 'ltr'\n            });\n        }\n    }\n\n    /**\n     * Default options for `ControlBar`\n     *\n     * @type {Object}\n     * @private\n     */\n    ControlBar.prototype.options_ = {\n        children: ['playToggle', 'skipBackward', 'skipForward', 'volumePanel', 'currentTimeDisplay', 'timeDivider', 'durationDisplay', 'progressControl', 'liveDisplay', 'seekToLive', 'remainingTimeDisplay', 'customControlSpacer', 'playbackRateMenuButton', 'chaptersButton', 'descriptionsButton', 'subsCapsButton', 'audioTrackButton', 'pictureInPictureToggle', 'fullscreenToggle']\n    };\n    Component$1.registerComponent('ControlBar', ControlBar);\n\n    /**\n     * @file error-display.js\n     */\n\n    /**\n     * A display that indicates an error has occurred. This means that the video\n     * is unplayable.\n     *\n     * @extends ModalDialog\n     */\n    class ErrorDisplay extends ModalDialog {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param  { import('./player').default } player\n         *         The `Player` that this class should be attached to.\n         *\n         * @param  {Object} [options]\n         *         The key/value store of player options.\n         */\n        constructor(player, options) {\n            super(player, options);\n            this.on(player, 'error', e => {\n                this.close();\n                this.open(e);\n            });\n        }\n\n        /**\n         * Builds the default DOM `className`.\n         *\n         * @return {string}\n         *         The DOM `className` for this object.\n         *\n         * @deprecated Since version 5.\n         */\n        buildCSSClass() {\n            return `vjs-error-display ${super.buildCSSClass()}`;\n        }\n\n        /**\n         * Gets the localized error message based on the `Player`s error.\n         *\n         * @return {string}\n         *         The `Player`s error message localized or an empty string.\n         */\n        content() {\n            const error = this.player().error();\n            return error ? this.localize(error.message) : '';\n        }\n    }\n\n    /**\n     * The default options for an `ErrorDisplay`.\n     *\n     * @private\n     */\n    ErrorDisplay.prototype.options_ = Object.assign({}, ModalDialog.prototype.options_, {\n        pauseOnOpen: false,\n        fillAlways: true,\n        temporary: false,\n        uncloseable: true\n    });\n    Component$1.registerComponent('ErrorDisplay', ErrorDisplay);\n\n    /**\n     * @file text-track-settings.js\n     */\n    const LOCAL_STORAGE_KEY$1 = 'vjs-text-track-settings';\n    const COLOR_BLACK = ['#000', 'Black'];\n    const COLOR_BLUE = ['#00F', 'Blue'];\n    const COLOR_CYAN = ['#0FF', 'Cyan'];\n    const COLOR_GREEN = ['#0F0', 'Green'];\n    const COLOR_MAGENTA = ['#F0F', 'Magenta'];\n    const COLOR_RED = ['#F00', 'Red'];\n    const COLOR_WHITE = ['#FFF', 'White'];\n    const COLOR_YELLOW = ['#FF0', 'Yellow'];\n    const OPACITY_OPAQUE = ['1', 'Opaque'];\n    const OPACITY_SEMI = ['0.5', 'Semi-Transparent'];\n    const OPACITY_TRANS = ['0', 'Transparent'];\n\n    // Configuration for the various <select> elements in the DOM of this component.\n    //\n    // Possible keys include:\n    //\n    // `default`:\n    //   The default option index. Only needs to be provided if not zero.\n    // `parser`:\n    //   A function which is used to parse the value from the selected option in\n    //   a customized way.\n    // `selector`:\n    //   The selector used to find the associated <select> element.\n    const selectConfigs = {\n        backgroundColor: {\n            selector: '.vjs-bg-color > select',\n            id: 'captions-background-color-%s',\n            label: 'Color',\n            options: [COLOR_BLACK, COLOR_WHITE, COLOR_RED, COLOR_GREEN, COLOR_BLUE, COLOR_YELLOW, COLOR_MAGENTA, COLOR_CYAN]\n        },\n        backgroundOpacity: {\n            selector: '.vjs-bg-opacity > select',\n            id: 'captions-background-opacity-%s',\n            label: 'Opacity',\n            options: [OPACITY_OPAQUE, OPACITY_SEMI, OPACITY_TRANS]\n        },\n        color: {\n            selector: '.vjs-text-color > select',\n            id: 'captions-foreground-color-%s',\n            label: 'Color',\n            options: [COLOR_WHITE, COLOR_BLACK, COLOR_RED, COLOR_GREEN, COLOR_BLUE, COLOR_YELLOW, COLOR_MAGENTA, COLOR_CYAN]\n        },\n        edgeStyle: {\n            selector: '.vjs-edge-style > select',\n            id: '%s',\n            label: 'Text Edge Style',\n            options: [['none', 'None'], ['raised', 'Raised'], ['depressed', 'Depressed'], ['uniform', 'Uniform'], ['dropshadow', 'Drop shadow']]\n        },\n        fontFamily: {\n            selector: '.vjs-font-family > select',\n            id: 'captions-font-family-%s',\n            label: 'Font Family',\n            options: [['proportionalSansSerif', 'Proportional Sans-Serif'], ['monospaceSansSerif', 'Monospace Sans-Serif'], ['proportionalSerif', 'Proportional Serif'], ['monospaceSerif', 'Monospace Serif'], ['casual', 'Casual'], ['script', 'Script'], ['small-caps', 'Small Caps']]\n        },\n        fontPercent: {\n            selector: '.vjs-font-percent > select',\n            id: 'captions-font-size-%s',\n            label: 'Font Size',\n            options: [['0.50', '50%'], ['0.75', '75%'], ['1.00', '100%'], ['1.25', '125%'], ['1.50', '150%'], ['1.75', '175%'], ['2.00', '200%'], ['3.00', '300%'], ['4.00', '400%']],\n            default: 2,\n            parser: v => v === '1.00' ? null : Number(v)\n        },\n        textOpacity: {\n            selector: '.vjs-text-opacity > select',\n            id: 'captions-foreground-opacity-%s',\n            label: 'Opacity',\n            options: [OPACITY_OPAQUE, OPACITY_SEMI]\n        },\n        // Options for this object are defined below.\n        windowColor: {\n            selector: '.vjs-window-color > select',\n            id: 'captions-window-color-%s',\n            label: 'Color'\n        },\n        // Options for this object are defined below.\n        windowOpacity: {\n            selector: '.vjs-window-opacity > select',\n            id: 'captions-window-opacity-%s',\n            label: 'Opacity',\n            options: [OPACITY_TRANS, OPACITY_SEMI, OPACITY_OPAQUE]\n        }\n    };\n    selectConfigs.windowColor.options = selectConfigs.backgroundColor.options;\n\n    /**\n     * Get the actual value of an option.\n     *\n     * @param  {string} value\n     *         The value to get\n     *\n     * @param  {Function} [parser]\n     *         Optional function to adjust the value.\n     *\n     * @return {*}\n     *         - Will be `undefined` if no value exists\n     *         - Will be `undefined` if the given value is \"none\".\n     *         - Will be the actual value otherwise.\n     *\n     * @private\n     */\n    function parseOptionValue(value, parser) {\n        if (parser) {\n            value = parser(value);\n        }\n        if (value && value !== 'none') {\n            return value;\n        }\n    }\n\n    /**\n     * Gets the value of the selected <option> element within a <select> element.\n     *\n     * @param  {Element} el\n     *         the element to look in\n     *\n     * @param  {Function} [parser]\n     *         Optional function to adjust the value.\n     *\n     * @return {*}\n     *         - Will be `undefined` if no value exists\n     *         - Will be `undefined` if the given value is \"none\".\n     *         - Will be the actual value otherwise.\n     *\n     * @private\n     */\n    function getSelectedOptionValue(el, parser) {\n        const value = el.options[el.options.selectedIndex].value;\n        return parseOptionValue(value, parser);\n    }\n\n    /**\n     * Sets the selected <option> element within a <select> element based on a\n     * given value.\n     *\n     * @param {Element} el\n     *        The element to look in.\n     *\n     * @param {string} value\n     *        the property to look on.\n     *\n     * @param {Function} [parser]\n     *        Optional function to adjust the value before comparing.\n     *\n     * @private\n     */\n    function setSelectedOption(el, value, parser) {\n        if (!value) {\n            return;\n        }\n        for (let i = 0; i < el.options.length; i++) {\n            if (parseOptionValue(el.options[i].value, parser) === value) {\n                el.selectedIndex = i;\n                break;\n            }\n        }\n    }\n\n    /**\n     * Manipulate Text Tracks settings.\n     *\n     * @extends ModalDialog\n     */\n    class TextTrackSettings extends ModalDialog {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('../player').default } player\n         *         The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *         The key/value store of player options.\n         */\n        constructor(player, options) {\n            options.temporary = false;\n            super(player, options);\n            this.updateDisplay = this.updateDisplay.bind(this);\n\n            // fill the modal and pretend we have opened it\n            this.fill();\n            this.hasBeenOpened_ = this.hasBeenFilled_ = true;\n            this.endDialog = createEl('p', {\n                className: 'vjs-control-text',\n                textContent: this.localize('End of dialog window.')\n            });\n            this.el().appendChild(this.endDialog);\n            this.setDefaults();\n\n            // Grab `persistTextTrackSettings` from the player options if not passed in child options\n            if (options.persistTextTrackSettings === undefined) {\n                this.options_.persistTextTrackSettings = this.options_.playerOptions.persistTextTrackSettings;\n            }\n            this.on(this.$('.vjs-done-button'), 'click', () => {\n                this.saveSettings();\n                this.close();\n            });\n            this.on(this.$('.vjs-default-button'), 'click', () => {\n                this.setDefaults();\n                this.updateDisplay();\n            });\n            each(selectConfigs, config => {\n                this.on(this.$(config.selector), 'change', this.updateDisplay);\n            });\n            if (this.options_.persistTextTrackSettings) {\n                this.restoreSettings();\n            }\n        }\n        dispose() {\n            this.endDialog = null;\n            super.dispose();\n        }\n\n        /**\n         * Create a <select> element with configured options.\n         *\n         * @param {string} key\n         *        Configuration key to use during creation.\n         *\n         * @param {string} [legendId]\n         *        Id of associated <legend>.\n         *\n         * @param {string} [type=label]\n         *        Type of labelling element, `label` or `legend`\n         *\n         * @return {string}\n         *         An HTML string.\n         *\n         * @private\n         */\n        createElSelect_(key, legendId = '', type = 'label') {\n            const config = selectConfigs[key];\n            const id = config.id.replace('%s', this.id_);\n            const selectLabelledbyIds = [legendId, id].join(' ').trim();\n            const guid = `vjs_select_${newGUID()}`;\n            return [`<${type} id=\"${id}\"${type === 'label' ? ` for=\"${guid}\" class=\"vjs-label\"` : ''}>`, this.localize(config.label), `</${type}>`, `<select aria-labelledby=\"${selectLabelledbyIds}\" id=\"${guid}\">`].concat(config.options.map(o => {\n                const optionId = id + '-' + o[1].replace(/\\W+/g, '');\n                return [`<option id=\"${optionId}\" value=\"${o[0]}\" `, `aria-labelledby=\"${selectLabelledbyIds} ${optionId}\">`, this.localize(o[1]), '</option>'].join('');\n            })).concat('</select>').join('');\n        }\n\n        /**\n         * Create foreground color element for the component\n         *\n         * @return {string}\n         *         An HTML string.\n         *\n         * @private\n         */\n        createElFgColor_() {\n            const legendId = `captions-text-legend-${this.id_}`;\n            return ['<fieldset class=\"vjs-fg vjs-track-setting\">', `<legend id=\"${legendId}\">`, this.localize('Text'), '</legend>', '<span class=\"vjs-text-color\">', this.createElSelect_('color', legendId), '</span>', '<span class=\"vjs-text-opacity vjs-opacity\">', this.createElSelect_('textOpacity', legendId), '</span>', '</fieldset>'].join('');\n        }\n\n        /**\n         * Create background color element for the component\n         *\n         * @return {string}\n         *         An HTML string.\n         *\n         * @private\n         */\n        createElBgColor_() {\n            const legendId = `captions-background-${this.id_}`;\n            return ['<fieldset class=\"vjs-bg vjs-track-setting\">', `<legend id=\"${legendId}\">`, this.localize('Text Background'), '</legend>', '<span class=\"vjs-bg-color\">', this.createElSelect_('backgroundColor', legendId), '</span>', '<span class=\"vjs-bg-opacity vjs-opacity\">', this.createElSelect_('backgroundOpacity', legendId), '</span>', '</fieldset>'].join('');\n        }\n\n        /**\n         * Create window color element for the component\n         *\n         * @return {string}\n         *         An HTML string.\n         *\n         * @private\n         */\n        createElWinColor_() {\n            const legendId = `captions-window-${this.id_}`;\n            return ['<fieldset class=\"vjs-window vjs-track-setting\">', `<legend id=\"${legendId}\">`, this.localize('Caption Area Background'), '</legend>', '<span class=\"vjs-window-color\">', this.createElSelect_('windowColor', legendId), '</span>', '<span class=\"vjs-window-opacity vjs-opacity\">', this.createElSelect_('windowOpacity', legendId), '</span>', '</fieldset>'].join('');\n        }\n\n        /**\n         * Create color elements for the component\n         *\n         * @return {Element}\n         *         The element that was created\n         *\n         * @private\n         */\n        createElColors_() {\n            return createEl('div', {\n                className: 'vjs-track-settings-colors',\n                innerHTML: [this.createElFgColor_(), this.createElBgColor_(), this.createElWinColor_()].join('')\n            });\n        }\n\n        /**\n         * Create font elements for the component\n         *\n         * @return {Element}\n         *         The element that was created.\n         *\n         * @private\n         */\n        createElFont_() {\n            return createEl('div', {\n                className: 'vjs-track-settings-font',\n                innerHTML: ['<fieldset class=\"vjs-font-percent vjs-track-setting\">', this.createElSelect_('fontPercent', '', 'legend'), '</fieldset>', '<fieldset class=\"vjs-edge-style vjs-track-setting\">', this.createElSelect_('edgeStyle', '', 'legend'), '</fieldset>', '<fieldset class=\"vjs-font-family vjs-track-setting\">', this.createElSelect_('fontFamily', '', 'legend'), '</fieldset>'].join('')\n            });\n        }\n\n        /**\n         * Create controls for the component\n         *\n         * @return {Element}\n         *         The element that was created.\n         *\n         * @private\n         */\n        createElControls_() {\n            const defaultsDescription = this.localize('restore all settings to the default values');\n            return createEl('div', {\n                className: 'vjs-track-settings-controls',\n                innerHTML: [`<button type=\"button\" class=\"vjs-default-button\" title=\"${defaultsDescription}\">`, this.localize('Reset'), `<span class=\"vjs-control-text\"> ${defaultsDescription}</span>`, '</button>', `<button type=\"button\" class=\"vjs-done-button\">${this.localize('Done')}</button>`].join('')\n            });\n        }\n        content() {\n            return [this.createElColors_(), this.createElFont_(), this.createElControls_()];\n        }\n        label() {\n            return this.localize('Caption Settings Dialog');\n        }\n        description() {\n            return this.localize('Beginning of dialog window. Escape will cancel and close the window.');\n        }\n        buildCSSClass() {\n            return super.buildCSSClass() + ' vjs-text-track-settings';\n        }\n\n        /**\n         * Gets an object of text track settings (or null).\n         *\n         * @return {Object}\n         *         An object with config values parsed from the DOM or localStorage.\n         */\n        getValues() {\n            return reduce(selectConfigs, (accum, config, key) => {\n                const value = getSelectedOptionValue(this.$(config.selector), config.parser);\n                if (value !== undefined) {\n                    accum[key] = value;\n                }\n                return accum;\n            }, {});\n        }\n\n        /**\n         * Sets text track settings from an object of values.\n         *\n         * @param {Object} values\n         *        An object with config values parsed from the DOM or localStorage.\n         */\n        setValues(values) {\n            each(selectConfigs, (config, key) => {\n                setSelectedOption(this.$(config.selector), values[key], config.parser);\n            });\n        }\n\n        /**\n         * Sets all `<select>` elements to their default values.\n         */\n        setDefaults() {\n            each(selectConfigs, config => {\n                const index = config.hasOwnProperty('default') ? config.default : 0;\n                this.$(config.selector).selectedIndex = index;\n            });\n        }\n\n        /**\n         * Restore texttrack settings from localStorage\n         */\n        restoreSettings() {\n            let values;\n            try {\n                values = JSON.parse(window.localStorage.getItem(LOCAL_STORAGE_KEY$1));\n            } catch (err) {\n                log$1.warn(err);\n            }\n            if (values) {\n                this.setValues(values);\n            }\n        }\n\n        /**\n         * Save text track settings to localStorage\n         */\n        saveSettings() {\n            if (!this.options_.persistTextTrackSettings) {\n                return;\n            }\n            const values = this.getValues();\n            try {\n                if (Object.keys(values).length) {\n                    window.localStorage.setItem(LOCAL_STORAGE_KEY$1, JSON.stringify(values));\n                } else {\n                    window.localStorage.removeItem(LOCAL_STORAGE_KEY$1);\n                }\n            } catch (err) {\n                log$1.warn(err);\n            }\n        }\n\n        /**\n         * Update display of text track settings\n         */\n        updateDisplay() {\n            const ttDisplay = this.player_.getChild('textTrackDisplay');\n            if (ttDisplay) {\n                ttDisplay.updateDisplay();\n            }\n        }\n\n        /**\n         * conditionally blur the element and refocus the captions button\n         *\n         * @private\n         */\n        conditionalBlur_() {\n            this.previouslyActiveEl_ = null;\n            const cb = this.player_.controlBar;\n            const subsCapsBtn = cb && cb.subsCapsButton;\n            const ccBtn = cb && cb.captionsButton;\n            if (subsCapsBtn) {\n                subsCapsBtn.focus();\n            } else if (ccBtn) {\n                ccBtn.focus();\n            }\n        }\n\n        /**\n         * Repopulate dialog with new localizations on languagechange\n         */\n        handleLanguagechange() {\n            this.fill();\n        }\n    }\n    Component$1.registerComponent('TextTrackSettings', TextTrackSettings);\n\n    /**\n     * @file resize-manager.js\n     */\n\n    /**\n     * A Resize Manager. It is in charge of triggering `playerresize` on the player in the right conditions.\n     *\n     * It'll either create an iframe and use a debounced resize handler on it or use the new {@link https://wicg.github.io/ResizeObserver/|ResizeObserver}.\n     *\n     * If the ResizeObserver is available natively, it will be used. A polyfill can be passed in as an option.\n     * If a `playerresize` event is not needed, the ResizeManager component can be removed from the player, see the example below.\n     *\n     * @example <caption>How to disable the resize manager</caption>\n     * const player = videojs('#vid', {\n     *   resizeManager: false\n     * });\n     *\n     * @see {@link https://wicg.github.io/ResizeObserver/|ResizeObserver specification}\n     *\n     * @extends Component\n     */\n    class ResizeManager extends Component$1 {\n        /**\n         * Create the ResizeManager.\n         *\n         * @param {Object} player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of ResizeManager options.\n         *\n         * @param {Object} [options.ResizeObserver]\n         *        A polyfill for ResizeObserver can be passed in here.\n         *        If this is set to null it will ignore the native ResizeObserver and fall back to the iframe fallback.\n         */\n        constructor(player, options) {\n            let RESIZE_OBSERVER_AVAILABLE = options.ResizeObserver || window.ResizeObserver;\n\n            // if `null` was passed, we want to disable the ResizeObserver\n            if (options.ResizeObserver === null) {\n                RESIZE_OBSERVER_AVAILABLE = false;\n            }\n\n            // Only create an element when ResizeObserver isn't available\n            const options_ = merge$2({\n                createEl: !RESIZE_OBSERVER_AVAILABLE,\n                reportTouchActivity: false\n            }, options);\n            super(player, options_);\n            this.ResizeObserver = options.ResizeObserver || window.ResizeObserver;\n            this.loadListener_ = null;\n            this.resizeObserver_ = null;\n            this.debouncedHandler_ = debounce(() => {\n                this.resizeHandler();\n            }, 100, false, this);\n            if (RESIZE_OBSERVER_AVAILABLE) {\n                this.resizeObserver_ = new this.ResizeObserver(this.debouncedHandler_);\n                this.resizeObserver_.observe(player.el());\n            } else {\n                this.loadListener_ = () => {\n                    if (!this.el_ || !this.el_.contentWindow) {\n                        return;\n                    }\n                    const debouncedHandler_ = this.debouncedHandler_;\n                    let unloadListener_ = this.unloadListener_ = function () {\n                        off(this, 'resize', debouncedHandler_);\n                        off(this, 'unload', unloadListener_);\n                        unloadListener_ = null;\n                    };\n\n                    // safari and edge can unload the iframe before resizemanager dispose\n                    // we have to dispose of event handlers correctly before that happens\n                    on(this.el_.contentWindow, 'unload', unloadListener_);\n                    on(this.el_.contentWindow, 'resize', debouncedHandler_);\n                };\n                this.one('load', this.loadListener_);\n            }\n        }\n        createEl() {\n            return super.createEl('iframe', {\n                className: 'vjs-resize-manager',\n                tabIndex: -1,\n                title: this.localize('No content')\n            }, {\n                'aria-hidden': 'true'\n            });\n        }\n\n        /**\n         * Called when a resize is triggered on the iframe or a resize is observed via the ResizeObserver\n         *\n         * @fires Player#playerresize\n         */\n        resizeHandler() {\n            /**\n             * Called when the player size has changed\n             *\n             * @event Player#playerresize\n             * @type {Event}\n             */\n            // make sure player is still around to trigger\n            // prevents this from causing an error after dispose\n            if (!this.player_ || !this.player_.trigger) {\n                return;\n            }\n            this.player_.trigger('playerresize');\n        }\n        dispose() {\n            if (this.debouncedHandler_) {\n                this.debouncedHandler_.cancel();\n            }\n            if (this.resizeObserver_) {\n                if (this.player_.el()) {\n                    this.resizeObserver_.unobserve(this.player_.el());\n                }\n                this.resizeObserver_.disconnect();\n            }\n            if (this.loadListener_) {\n                this.off('load', this.loadListener_);\n            }\n            if (this.el_ && this.el_.contentWindow && this.unloadListener_) {\n                this.unloadListener_.call(this.el_.contentWindow);\n            }\n            this.ResizeObserver = null;\n            this.resizeObserver = null;\n            this.debouncedHandler_ = null;\n            this.loadListener_ = null;\n            super.dispose();\n        }\n    }\n    Component$1.registerComponent('ResizeManager', ResizeManager);\n\n    const defaults = {\n        trackingThreshold: 20,\n        liveTolerance: 15\n    };\n\n    /*\n    track when we are at the live edge, and other helpers for live playback */\n\n    /**\n     * A class for checking live current time and determining when the player\n     * is at or behind the live edge.\n     */\n    class LiveTracker extends Component$1 {\n        /**\n         * Creates an instance of this class.\n         *\n         * @param { import('./player').default } player\n         *        The `Player` that this class should be attached to.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {number} [options.trackingThreshold=20]\n         *        Number of seconds of live window (seekableEnd - seekableStart) that\n         *        media needs to have before the liveui will be shown.\n         *\n         * @param {number} [options.liveTolerance=15]\n         *        Number of seconds behind live that we have to be\n         *        before we will be considered non-live. Note that this will only\n         *        be used when playing at the live edge. This allows large seekable end\n         *        changes to not effect whether we are live or not.\n         */\n        constructor(player, options) {\n            // LiveTracker does not need an element\n            const options_ = merge$2(defaults, options, {\n                createEl: false\n            });\n            super(player, options_);\n            this.trackLiveHandler_ = () => this.trackLive_();\n            this.handlePlay_ = e => this.handlePlay(e);\n            this.handleFirstTimeupdate_ = e => this.handleFirstTimeupdate(e);\n            this.handleSeeked_ = e => this.handleSeeked(e);\n            this.seekToLiveEdge_ = e => this.seekToLiveEdge(e);\n            this.reset_();\n            this.on(this.player_, 'durationchange', e => this.handleDurationchange(e));\n            // we should try to toggle tracking on canplay as native playback engines, like Safari\n            // may not have the proper values for things like seekableEnd until then\n            this.on(this.player_, 'canplay', () => this.toggleTracking());\n        }\n\n        /**\n         * all the functionality for tracking when seek end changes\n         * and for tracking how far past seek end we should be\n         */\n        trackLive_() {\n            const seekable = this.player_.seekable();\n\n            // skip undefined seekable\n            if (!seekable || !seekable.length) {\n                return;\n            }\n            const newTime = Number(window.performance.now().toFixed(4));\n            const deltaTime = this.lastTime_ === -1 ? 0 : (newTime - this.lastTime_) / 1000;\n            this.lastTime_ = newTime;\n            this.pastSeekEnd_ = this.pastSeekEnd() + deltaTime;\n            const liveCurrentTime = this.liveCurrentTime();\n            const currentTime = this.player_.currentTime();\n\n            // we are behind live if any are true\n            // 1. the player is paused\n            // 2. the user seeked to a location 2 seconds away from live\n            // 3. the difference between live and current time is greater\n            //    liveTolerance which defaults to 15s\n            let isBehind = this.player_.paused() || this.seekedBehindLive_ || Math.abs(liveCurrentTime - currentTime) > this.options_.liveTolerance;\n\n            // we cannot be behind if\n            // 1. until we have not seen a timeupdate yet\n            // 2. liveCurrentTime is Infinity, which happens on Android and Native Safari\n            if (!this.timeupdateSeen_ || liveCurrentTime === Infinity) {\n                isBehind = false;\n            }\n            if (isBehind !== this.behindLiveEdge_) {\n                this.behindLiveEdge_ = isBehind;\n                this.trigger('liveedgechange');\n            }\n        }\n\n        /**\n         * handle a durationchange event on the player\n         * and start/stop tracking accordingly.\n         */\n        handleDurationchange() {\n            this.toggleTracking();\n        }\n\n        /**\n         * start/stop tracking\n         */\n        toggleTracking() {\n            if (this.player_.duration() === Infinity && this.liveWindow() >= this.options_.trackingThreshold) {\n                if (this.player_.options_.liveui) {\n                    this.player_.addClass('vjs-liveui');\n                }\n                this.startTracking();\n            } else {\n                this.player_.removeClass('vjs-liveui');\n                this.stopTracking();\n            }\n        }\n\n        /**\n         * start tracking live playback\n         */\n        startTracking() {\n            if (this.isTracking()) {\n                return;\n            }\n\n            // If we haven't seen a timeupdate, we need to check whether playback\n            // began before this component started tracking. This can happen commonly\n            // when using autoplay.\n            if (!this.timeupdateSeen_) {\n                this.timeupdateSeen_ = this.player_.hasStarted();\n            }\n            this.trackingInterval_ = this.setInterval(this.trackLiveHandler_, UPDATE_REFRESH_INTERVAL);\n            this.trackLive_();\n            this.on(this.player_, ['play', 'pause'], this.trackLiveHandler_);\n            if (!this.timeupdateSeen_) {\n                this.one(this.player_, 'play', this.handlePlay_);\n                this.one(this.player_, 'timeupdate', this.handleFirstTimeupdate_);\n            } else {\n                this.on(this.player_, 'seeked', this.handleSeeked_);\n            }\n        }\n\n        /**\n         * handle the first timeupdate on the player if it wasn't already playing\n         * when live tracker started tracking.\n         */\n        handleFirstTimeupdate() {\n            this.timeupdateSeen_ = true;\n            this.on(this.player_, 'seeked', this.handleSeeked_);\n        }\n\n        /**\n         * Keep track of what time a seek starts, and listen for seeked\n         * to find where a seek ends.\n         */\n        handleSeeked() {\n            const timeDiff = Math.abs(this.liveCurrentTime() - this.player_.currentTime());\n            this.seekedBehindLive_ = this.nextSeekedFromUser_ && timeDiff > 2;\n            this.nextSeekedFromUser_ = false;\n            this.trackLive_();\n        }\n\n        /**\n         * handle the first play on the player, and make sure that we seek\n         * right to the live edge.\n         */\n        handlePlay() {\n            this.one(this.player_, 'timeupdate', this.seekToLiveEdge_);\n        }\n\n        /**\n         * Stop tracking, and set all internal variables to\n         * their initial value.\n         */\n        reset_() {\n            this.lastTime_ = -1;\n            this.pastSeekEnd_ = 0;\n            this.lastSeekEnd_ = -1;\n            this.behindLiveEdge_ = true;\n            this.timeupdateSeen_ = false;\n            this.seekedBehindLive_ = false;\n            this.nextSeekedFromUser_ = false;\n            this.clearInterval(this.trackingInterval_);\n            this.trackingInterval_ = null;\n            this.off(this.player_, ['play', 'pause'], this.trackLiveHandler_);\n            this.off(this.player_, 'seeked', this.handleSeeked_);\n            this.off(this.player_, 'play', this.handlePlay_);\n            this.off(this.player_, 'timeupdate', this.handleFirstTimeupdate_);\n            this.off(this.player_, 'timeupdate', this.seekToLiveEdge_);\n        }\n\n        /**\n         * The next seeked event is from the user. Meaning that any seek\n         * > 2s behind live will be considered behind live for real and\n         * liveTolerance will be ignored.\n         */\n        nextSeekedFromUser() {\n            this.nextSeekedFromUser_ = true;\n        }\n\n        /**\n         * stop tracking live playback\n         */\n        stopTracking() {\n            if (!this.isTracking()) {\n                return;\n            }\n            this.reset_();\n            this.trigger('liveedgechange');\n        }\n\n        /**\n         * A helper to get the player seekable end\n         * so that we don't have to null check everywhere\n         *\n         * @return {number}\n         *         The furthest seekable end or Infinity.\n         */\n        seekableEnd() {\n            const seekable = this.player_.seekable();\n            const seekableEnds = [];\n            let i = seekable ? seekable.length : 0;\n            while (i--) {\n                seekableEnds.push(seekable.end(i));\n            }\n\n            // grab the furthest seekable end after sorting, or if there are none\n            // default to Infinity\n            return seekableEnds.length ? seekableEnds.sort()[seekableEnds.length - 1] : Infinity;\n        }\n\n        /**\n         * A helper to get the player seekable start\n         * so that we don't have to null check everywhere\n         *\n         * @return {number}\n         *         The earliest seekable start or 0.\n         */\n        seekableStart() {\n            const seekable = this.player_.seekable();\n            const seekableStarts = [];\n            let i = seekable ? seekable.length : 0;\n            while (i--) {\n                seekableStarts.push(seekable.start(i));\n            }\n\n            // grab the first seekable start after sorting, or if there are none\n            // default to 0\n            return seekableStarts.length ? seekableStarts.sort()[0] : 0;\n        }\n\n        /**\n         * Get the live time window aka\n         * the amount of time between seekable start and\n         * live current time.\n         *\n         * @return {number}\n         *         The amount of seconds that are seekable in\n         *         the live video.\n         */\n        liveWindow() {\n            const liveCurrentTime = this.liveCurrentTime();\n\n            // if liveCurrenTime is Infinity then we don't have a liveWindow at all\n            if (liveCurrentTime === Infinity) {\n                return 0;\n            }\n            return liveCurrentTime - this.seekableStart();\n        }\n\n        /**\n         * Determines if the player is live, only checks if this component\n         * is tracking live playback or not\n         *\n         * @return {boolean}\n         *         Whether liveTracker is tracking\n         */\n        isLive() {\n            return this.isTracking();\n        }\n\n        /**\n         * Determines if currentTime is at the live edge and won't fall behind\n         * on each seekableendchange\n         *\n         * @return {boolean}\n         *         Whether playback is at the live edge\n         */\n        atLiveEdge() {\n            return !this.behindLiveEdge();\n        }\n\n        /**\n         * get what we expect the live current time to be\n         *\n         * @return {number}\n         *         The expected live current time\n         */\n        liveCurrentTime() {\n            return this.pastSeekEnd() + this.seekableEnd();\n        }\n\n        /**\n         * The number of seconds that have occurred after seekable end\n         * changed. This will be reset to 0 once seekable end changes.\n         *\n         * @return {number}\n         *         Seconds past the current seekable end\n         */\n        pastSeekEnd() {\n            const seekableEnd = this.seekableEnd();\n            if (this.lastSeekEnd_ !== -1 && seekableEnd !== this.lastSeekEnd_) {\n                this.pastSeekEnd_ = 0;\n            }\n            this.lastSeekEnd_ = seekableEnd;\n            return this.pastSeekEnd_;\n        }\n\n        /**\n         * If we are currently behind the live edge, aka currentTime will be\n         * behind on a seekableendchange\n         *\n         * @return {boolean}\n         *         If we are behind the live edge\n         */\n        behindLiveEdge() {\n            return this.behindLiveEdge_;\n        }\n\n        /**\n         * Whether live tracker is currently tracking or not.\n         */\n        isTracking() {\n            return typeof this.trackingInterval_ === 'number';\n        }\n\n        /**\n         * Seek to the live edge if we are behind the live edge\n         */\n        seekToLiveEdge() {\n            this.seekedBehindLive_ = false;\n            if (this.atLiveEdge()) {\n                return;\n            }\n            this.nextSeekedFromUser_ = false;\n            this.player_.currentTime(this.liveCurrentTime());\n        }\n\n        /**\n         * Dispose of liveTracker\n         */\n        dispose() {\n            this.stopTracking();\n            super.dispose();\n        }\n    }\n    Component$1.registerComponent('LiveTracker', LiveTracker);\n\n    /**\n     * Displays an element over the player which contains an optional title and\n     * description for the current content.\n     *\n     * Much of the code for this component originated in the now obsolete\n     * videojs-dock plugin: https://github.com/brightcove/videojs-dock/\n     *\n     * @extends Component\n     */\n    class TitleBar extends Component$1 {\n        constructor(player, options) {\n            super(player, options);\n            this.on('statechanged', e => this.updateDom_());\n            this.updateDom_();\n        }\n\n        /**\n         * Create the `TitleBar`'s DOM element\n         *\n         * @return {Element}\n         *         The element that was created.\n         */\n        createEl() {\n            this.els = {\n                title: createEl('div', {\n                    className: 'vjs-title-bar-title',\n                    id: `vjs-title-bar-title-${newGUID()}`\n                }),\n                description: createEl('div', {\n                    className: 'vjs-title-bar-description',\n                    id: `vjs-title-bar-description-${newGUID()}`\n                })\n            };\n            return createEl('div', {\n                className: 'vjs-title-bar'\n            }, {}, values$1(this.els));\n        }\n\n        /**\n         * Updates the DOM based on the component's state object.\n         */\n        updateDom_() {\n            const tech = this.player_.tech_;\n            const techEl = tech && tech.el_;\n            const techAriaAttrs = {\n                title: 'aria-labelledby',\n                description: 'aria-describedby'\n            };\n            ['title', 'description'].forEach(k => {\n                const value = this.state[k];\n                const el = this.els[k];\n                const techAriaAttr = techAriaAttrs[k];\n                emptyEl(el);\n                if (value) {\n                    textContent(el, value);\n                }\n\n                // If there is a tech element available, update its ARIA attributes\n                // according to whether a title and/or description have been provided.\n                if (techEl) {\n                    techEl.removeAttribute(techAriaAttr);\n                    if (value) {\n                        techEl.setAttribute(techAriaAttr, el.id);\n                    }\n                }\n            });\n            if (this.state.title || this.state.description) {\n                this.show();\n            } else {\n                this.hide();\n            }\n        }\n\n        /**\n         * Update the contents of the title bar component with new title and\n         * description text.\n         *\n         * If both title and description are missing, the title bar will be hidden.\n         *\n         * If either title or description are present, the title bar will be visible.\n         *\n         * NOTE: Any previously set value will be preserved. To unset a previously\n         * set value, you must pass an empty string or null.\n         *\n         * For example:\n         *\n         * ```\n         * update({title: 'foo', description: 'bar'}) // title: 'foo', description: 'bar'\n         * update({description: 'bar2'}) // title: 'foo', description: 'bar2'\n         * update({title: ''}) // title: '', description: 'bar2'\n         * update({title: 'foo', description: null}) // title: 'foo', description: null\n         * ```\n         *\n         * @param  {Object} [options={}]\n         *         An options object. When empty, the title bar will be hidden.\n         *\n         * @param  {string} [options.title]\n         *         A title to display in the title bar.\n         *\n         * @param  {string} [options.description]\n         *         A description to display in the title bar.\n         */\n        update(options) {\n            this.setState(options);\n        }\n\n        /**\n         * Dispose the component.\n         */\n        dispose() {\n            const tech = this.player_.tech_;\n            const techEl = tech && tech.el_;\n            if (techEl) {\n                techEl.removeAttribute('aria-labelledby');\n                techEl.removeAttribute('aria-describedby');\n            }\n            super.dispose();\n            this.els = null;\n        }\n    }\n    Component$1.registerComponent('TitleBar', TitleBar);\n\n    /**\n     * This function is used to fire a sourceset when there is something\n     * similar to `mediaEl.load()` being called. It will try to find the source via\n     * the `src` attribute and then the `<source>` elements. It will then fire `sourceset`\n     * with the source that was found or empty string if we cannot know. If it cannot\n     * find a source then `sourceset` will not be fired.\n     *\n     * @param { import('./html5').default } tech\n     *        The tech object that sourceset was setup on\n     *\n     * @return {boolean}\n     *         returns false if the sourceset was not fired and true otherwise.\n     */\n    const sourcesetLoad = tech => {\n        const el = tech.el();\n\n        // if `el.src` is set, that source will be loaded.\n        if (el.hasAttribute('src')) {\n            tech.triggerSourceset(el.src);\n            return true;\n        }\n\n        /**\n         * Since there isn't a src property on the media element, source elements will be used for\n         * implementing the source selection algorithm. This happens asynchronously and\n         * for most cases were there is more than one source we cannot tell what source will\n         * be loaded, without re-implementing the source selection algorithm. At this time we are not\n         * going to do that. There are three special cases that we do handle here though:\n         *\n         * 1. If there are no sources, do not fire `sourceset`.\n         * 2. If there is only one `<source>` with a `src` property/attribute that is our `src`\n         * 3. If there is more than one `<source>` but all of them have the same `src` url.\n         *    That will be our src.\n         */\n        const sources = tech.$$('source');\n        const srcUrls = [];\n        let src = '';\n\n        // if there are no sources, do not fire sourceset\n        if (!sources.length) {\n            return false;\n        }\n\n        // only count valid/non-duplicate source elements\n        for (let i = 0; i < sources.length; i++) {\n            const url = sources[i].src;\n            if (url && srcUrls.indexOf(url) === -1) {\n                srcUrls.push(url);\n            }\n        }\n\n        // there were no valid sources\n        if (!srcUrls.length) {\n            return false;\n        }\n\n        // there is only one valid source element url\n        // use that\n        if (srcUrls.length === 1) {\n            src = srcUrls[0];\n        }\n        tech.triggerSourceset(src);\n        return true;\n    };\n\n    /**\n     * our implementation of an `innerHTML` descriptor for browsers\n     * that do not have one.\n     */\n    const innerHTMLDescriptorPolyfill = Object.defineProperty({}, 'innerHTML', {\n        get() {\n            return this.cloneNode(true).innerHTML;\n        },\n        set(v) {\n            // make a dummy node to use innerHTML on\n            const dummy = document.createElement(this.nodeName.toLowerCase());\n\n            // set innerHTML to the value provided\n            dummy.innerHTML = v;\n\n            // make a document fragment to hold the nodes from dummy\n            const docFrag = document.createDocumentFragment();\n\n            // copy all of the nodes created by the innerHTML on dummy\n            // to the document fragment\n            while (dummy.childNodes.length) {\n                docFrag.appendChild(dummy.childNodes[0]);\n            }\n\n            // remove content\n            this.innerText = '';\n\n            // now we add all of that html in one by appending the\n            // document fragment. This is how innerHTML does it.\n            window.Element.prototype.appendChild.call(this, docFrag);\n\n            // then return the result that innerHTML's setter would\n            return this.innerHTML;\n        }\n    });\n\n    /**\n     * Get a property descriptor given a list of priorities and the\n     * property to get.\n     */\n    const getDescriptor = (priority, prop) => {\n        let descriptor = {};\n        for (let i = 0; i < priority.length; i++) {\n            descriptor = Object.getOwnPropertyDescriptor(priority[i], prop);\n            if (descriptor && descriptor.set && descriptor.get) {\n                break;\n            }\n        }\n        descriptor.enumerable = true;\n        descriptor.configurable = true;\n        return descriptor;\n    };\n    const getInnerHTMLDescriptor = tech => getDescriptor([tech.el(), window.HTMLMediaElement.prototype, window.Element.prototype, innerHTMLDescriptorPolyfill], 'innerHTML');\n\n    /**\n     * Patches browser internal functions so that we can tell synchronously\n     * if a `<source>` was appended to the media element. For some reason this\n     * causes a `sourceset` if the the media element is ready and has no source.\n     * This happens when:\n     * - The page has just loaded and the media element does not have a source.\n     * - The media element was emptied of all sources, then `load()` was called.\n     *\n     * It does this by patching the following functions/properties when they are supported:\n     *\n     * - `append()` - can be used to add a `<source>` element to the media element\n     * - `appendChild()` - can be used to add a `<source>` element to the media element\n     * - `insertAdjacentHTML()` -  can be used to add a `<source>` element to the media element\n     * - `innerHTML` -  can be used to add a `<source>` element to the media element\n     *\n     * @param {Html5} tech\n     *        The tech object that sourceset is being setup on.\n     */\n    const firstSourceWatch = function (tech) {\n        const el = tech.el();\n\n        // make sure firstSourceWatch isn't setup twice.\n        if (el.resetSourceWatch_) {\n            return;\n        }\n        const old = {};\n        const innerDescriptor = getInnerHTMLDescriptor(tech);\n        const appendWrapper = appendFn => (...args) => {\n            const retval = appendFn.apply(el, args);\n            sourcesetLoad(tech);\n            return retval;\n        };\n        ['append', 'appendChild', 'insertAdjacentHTML'].forEach(k => {\n            if (!el[k]) {\n                return;\n            }\n\n            // store the old function\n            old[k] = el[k];\n\n            // call the old function with a sourceset if a source\n            // was loaded\n            el[k] = appendWrapper(old[k]);\n        });\n        Object.defineProperty(el, 'innerHTML', merge$2(innerDescriptor, {\n            set: appendWrapper(innerDescriptor.set)\n        }));\n        el.resetSourceWatch_ = () => {\n            el.resetSourceWatch_ = null;\n            Object.keys(old).forEach(k => {\n                el[k] = old[k];\n            });\n            Object.defineProperty(el, 'innerHTML', innerDescriptor);\n        };\n\n        // on the first sourceset, we need to revert our changes\n        tech.one('sourceset', el.resetSourceWatch_);\n    };\n\n    /**\n     * our implementation of a `src` descriptor for browsers\n     * that do not have one\n     */\n    const srcDescriptorPolyfill = Object.defineProperty({}, 'src', {\n        get() {\n            if (this.hasAttribute('src')) {\n                return getAbsoluteURL(window.Element.prototype.getAttribute.call(this, 'src'));\n            }\n            return '';\n        },\n        set(v) {\n            window.Element.prototype.setAttribute.call(this, 'src', v);\n            return v;\n        }\n    });\n    const getSrcDescriptor = tech => getDescriptor([tech.el(), window.HTMLMediaElement.prototype, srcDescriptorPolyfill], 'src');\n\n    /**\n     * setup `sourceset` handling on the `Html5` tech. This function\n     * patches the following element properties/functions:\n     *\n     * - `src` - to determine when `src` is set\n     * - `setAttribute()` - to determine when `src` is set\n     * - `load()` - this re-triggers the source selection algorithm, and can\n     *              cause a sourceset.\n     *\n     * If there is no source when we are adding `sourceset` support or during a `load()`\n     * we also patch the functions listed in `firstSourceWatch`.\n     *\n     * @param {Html5} tech\n     *        The tech to patch\n     */\n    const setupSourceset = function (tech) {\n        if (!tech.featuresSourceset) {\n            return;\n        }\n        const el = tech.el();\n\n        // make sure sourceset isn't setup twice.\n        if (el.resetSourceset_) {\n            return;\n        }\n        const srcDescriptor = getSrcDescriptor(tech);\n        const oldSetAttribute = el.setAttribute;\n        const oldLoad = el.load;\n        Object.defineProperty(el, 'src', merge$2(srcDescriptor, {\n            set: v => {\n                const retval = srcDescriptor.set.call(el, v);\n\n                // we use the getter here to get the actual value set on src\n                tech.triggerSourceset(el.src);\n                return retval;\n            }\n        }));\n        el.setAttribute = (n, v) => {\n            const retval = oldSetAttribute.call(el, n, v);\n            if (/src/i.test(n)) {\n                tech.triggerSourceset(el.src);\n            }\n            return retval;\n        };\n        el.load = () => {\n            const retval = oldLoad.call(el);\n\n            // if load was called, but there was no source to fire\n            // sourceset on. We have to watch for a source append\n            // as that can trigger a `sourceset` when the media element\n            // has no source\n            if (!sourcesetLoad(tech)) {\n                tech.triggerSourceset('');\n                firstSourceWatch(tech);\n            }\n            return retval;\n        };\n        if (el.currentSrc) {\n            tech.triggerSourceset(el.currentSrc);\n        } else if (!sourcesetLoad(tech)) {\n            firstSourceWatch(tech);\n        }\n        el.resetSourceset_ = () => {\n            el.resetSourceset_ = null;\n            el.load = oldLoad;\n            el.setAttribute = oldSetAttribute;\n            Object.defineProperty(el, 'src', srcDescriptor);\n            if (el.resetSourceWatch_) {\n                el.resetSourceWatch_();\n            }\n        };\n    };\n\n    /**\n     * @file html5.js\n     */\n\n    /**\n     * HTML5 Media Controller - Wrapper for HTML5 Media API\n     *\n     * @mixes Tech~SourceHandlerAdditions\n     * @extends Tech\n     */\n    class Html5 extends Tech {\n        /**\n         * Create an instance of this Tech.\n         *\n         * @param {Object} [options]\n         *        The key/value store of player options.\n         *\n         * @param {Function} [ready]\n         *        Callback function to call when the `HTML5` Tech is ready.\n         */\n        constructor(options, ready) {\n            super(options, ready);\n            const source = options.source;\n            let crossoriginTracks = false;\n            this.featuresVideoFrameCallback = this.featuresVideoFrameCallback && this.el_.tagName === 'VIDEO';\n\n            // Set the source if one is provided\n            // 1) Check if the source is new (if not, we want to keep the original so playback isn't interrupted)\n            // 2) Check to see if the network state of the tag was failed at init, and if so, reset the source\n            // anyway so the error gets fired.\n            if (source && (this.el_.currentSrc !== source.src || options.tag && options.tag.initNetworkState_ === 3)) {\n                this.setSource(source);\n            } else {\n                this.handleLateInit_(this.el_);\n            }\n\n            // setup sourceset after late sourceset/init\n            if (options.enableSourceset) {\n                this.setupSourcesetHandling_();\n            }\n            this.isScrubbing_ = false;\n            if (this.el_.hasChildNodes()) {\n                const nodes = this.el_.childNodes;\n                let nodesLength = nodes.length;\n                const removeNodes = [];\n                while (nodesLength--) {\n                    const node = nodes[nodesLength];\n                    const nodeName = node.nodeName.toLowerCase();\n                    if (nodeName === 'track') {\n                        if (!this.featuresNativeTextTracks) {\n                            // Empty video tag tracks so the built-in player doesn't use them also.\n                            // This may not be fast enough to stop HTML5 browsers from reading the tags\n                            // so we'll need to turn off any default tracks if we're manually doing\n                            // captions and subtitles. videoElement.textTracks\n                            removeNodes.push(node);\n                        } else {\n                            // store HTMLTrackElement and TextTrack to remote list\n                            this.remoteTextTrackEls().addTrackElement_(node);\n                            this.remoteTextTracks().addTrack(node.track);\n                            this.textTracks().addTrack(node.track);\n                            if (!crossoriginTracks && !this.el_.hasAttribute('crossorigin') && isCrossOrigin(node.src)) {\n                                crossoriginTracks = true;\n                            }\n                        }\n                    }\n                }\n                for (let i = 0; i < removeNodes.length; i++) {\n                    this.el_.removeChild(removeNodes[i]);\n                }\n            }\n            this.proxyNativeTracks_();\n            if (this.featuresNativeTextTracks && crossoriginTracks) {\n                log$1.warn('Text Tracks are being loaded from another origin but the crossorigin attribute isn\\'t used.\\n' + 'This may prevent text tracks from loading.');\n            }\n\n            // prevent iOS Safari from disabling metadata text tracks during native playback\n            this.restoreMetadataTracksInIOSNativePlayer_();\n\n            // Determine if native controls should be used\n            // Our goal should be to get the custom controls on mobile solid everywhere\n            // so we can remove this all together. Right now this will block custom\n            // controls on touch enabled laptops like the Chrome Pixel\n            if ((TOUCH_ENABLED || IS_IPHONE) && options.nativeControlsForTouch === true) {\n                this.setControls(true);\n            }\n\n            // on iOS, we want to proxy `webkitbeginfullscreen` and `webkitendfullscreen`\n            // into a `fullscreenchange` event\n            this.proxyWebkitFullscreen_();\n            this.triggerReady();\n        }\n\n        /**\n         * Dispose of `HTML5` media element and remove all tracks.\n         */\n        dispose() {\n            if (this.el_ && this.el_.resetSourceset_) {\n                this.el_.resetSourceset_();\n            }\n            Html5.disposeMediaElement(this.el_);\n            this.options_ = null;\n\n            // tech will handle clearing of the emulated track list\n            super.dispose();\n        }\n\n        /**\n         * Modify the media element so that we can detect when\n         * the source is changed. Fires `sourceset` just after the source has changed\n         */\n        setupSourcesetHandling_() {\n            setupSourceset(this);\n        }\n\n        /**\n         * When a captions track is enabled in the iOS Safari native player, all other\n         * tracks are disabled (including metadata tracks), which nulls all of their\n         * associated cue points. This will restore metadata tracks to their pre-fullscreen\n         * state in those cases so that cue points are not needlessly lost.\n         *\n         * @private\n         */\n        restoreMetadataTracksInIOSNativePlayer_() {\n            const textTracks = this.textTracks();\n            let metadataTracksPreFullscreenState;\n\n            // captures a snapshot of every metadata track's current state\n            const takeMetadataTrackSnapshot = () => {\n                metadataTracksPreFullscreenState = [];\n                for (let i = 0; i < textTracks.length; i++) {\n                    const track = textTracks[i];\n                    if (track.kind === 'metadata') {\n                        metadataTracksPreFullscreenState.push({\n                            track,\n                            storedMode: track.mode\n                        });\n                    }\n                }\n            };\n\n            // snapshot each metadata track's initial state, and update the snapshot\n            // each time there is a track 'change' event\n            takeMetadataTrackSnapshot();\n            textTracks.addEventListener('change', takeMetadataTrackSnapshot);\n            this.on('dispose', () => textTracks.removeEventListener('change', takeMetadataTrackSnapshot));\n            const restoreTrackMode = () => {\n                for (let i = 0; i < metadataTracksPreFullscreenState.length; i++) {\n                    const storedTrack = metadataTracksPreFullscreenState[i];\n                    if (storedTrack.track.mode === 'disabled' && storedTrack.track.mode !== storedTrack.storedMode) {\n                        storedTrack.track.mode = storedTrack.storedMode;\n                    }\n                }\n                // we only want this handler to be executed on the first 'change' event\n                textTracks.removeEventListener('change', restoreTrackMode);\n            };\n\n            // when we enter fullscreen playback, stop updating the snapshot and\n            // restore all track modes to their pre-fullscreen state\n            this.on('webkitbeginfullscreen', () => {\n                textTracks.removeEventListener('change', takeMetadataTrackSnapshot);\n\n                // remove the listener before adding it just in case it wasn't previously removed\n                textTracks.removeEventListener('change', restoreTrackMode);\n                textTracks.addEventListener('change', restoreTrackMode);\n            });\n\n            // start updating the snapshot again after leaving fullscreen\n            this.on('webkitendfullscreen', () => {\n                // remove the listener before adding it just in case it wasn't previously removed\n                textTracks.removeEventListener('change', takeMetadataTrackSnapshot);\n                textTracks.addEventListener('change', takeMetadataTrackSnapshot);\n\n                // remove the restoreTrackMode handler in case it wasn't triggered during fullscreen playback\n                textTracks.removeEventListener('change', restoreTrackMode);\n            });\n        }\n\n        /**\n         * Attempt to force override of tracks for the given type\n         *\n         * @param {string} type - Track type to override, possible values include 'Audio',\n         * 'Video', and 'Text'.\n         * @param {boolean} override - If set to true native audio/video will be overridden,\n         * otherwise native audio/video will potentially be used.\n         * @private\n         */\n        overrideNative_(type, override) {\n            // If there is no behavioral change don't add/remove listeners\n            if (override !== this[`featuresNative${type}Tracks`]) {\n                return;\n            }\n            const lowerCaseType = type.toLowerCase();\n            if (this[`${lowerCaseType}TracksListeners_`]) {\n                Object.keys(this[`${lowerCaseType}TracksListeners_`]).forEach(eventName => {\n                    const elTracks = this.el()[`${lowerCaseType}Tracks`];\n                    elTracks.removeEventListener(eventName, this[`${lowerCaseType}TracksListeners_`][eventName]);\n                });\n            }\n            this[`featuresNative${type}Tracks`] = !override;\n            this[`${lowerCaseType}TracksListeners_`] = null;\n            this.proxyNativeTracksForType_(lowerCaseType);\n        }\n\n        /**\n         * Attempt to force override of native audio tracks.\n         *\n         * @param {boolean} override - If set to true native audio will be overridden,\n         * otherwise native audio will potentially be used.\n         */\n        overrideNativeAudioTracks(override) {\n            this.overrideNative_('Audio', override);\n        }\n\n        /**\n         * Attempt to force override of native video tracks.\n         *\n         * @param {boolean} override - If set to true native video will be overridden,\n         * otherwise native video will potentially be used.\n         */\n        overrideNativeVideoTracks(override) {\n            this.overrideNative_('Video', override);\n        }\n\n        /**\n         * Proxy native track list events for the given type to our track\n         * lists if the browser we are playing in supports that type of track list.\n         *\n         * @param {string} name - Track type; values include 'audio', 'video', and 'text'\n         * @private\n         */\n        proxyNativeTracksForType_(name) {\n            const props = NORMAL[name];\n            const elTracks = this.el()[props.getterName];\n            const techTracks = this[props.getterName]();\n            if (!this[`featuresNative${props.capitalName}Tracks`] || !elTracks || !elTracks.addEventListener) {\n                return;\n            }\n            const listeners = {\n                change: e => {\n                    const event = {\n                        type: 'change',\n                        target: techTracks,\n                        currentTarget: techTracks,\n                        srcElement: techTracks\n                    };\n                    techTracks.trigger(event);\n\n                    // if we are a text track change event, we should also notify the\n                    // remote text track list. This can potentially cause a false positive\n                    // if we were to get a change event on a non-remote track and\n                    // we triggered the event on the remote text track list which doesn't\n                    // contain that track. However, best practices mean looping through the\n                    // list of tracks and searching for the appropriate mode value, so,\n                    // this shouldn't pose an issue\n                    if (name === 'text') {\n                        this[REMOTE.remoteText.getterName]().trigger(event);\n                    }\n                },\n                addtrack(e) {\n                    techTracks.addTrack(e.track);\n                },\n                removetrack(e) {\n                    techTracks.removeTrack(e.track);\n                }\n            };\n            const removeOldTracks = function () {\n                const removeTracks = [];\n                for (let i = 0; i < techTracks.length; i++) {\n                    let found = false;\n                    for (let j = 0; j < elTracks.length; j++) {\n                        if (elTracks[j] === techTracks[i]) {\n                            found = true;\n                            break;\n                        }\n                    }\n                    if (!found) {\n                        removeTracks.push(techTracks[i]);\n                    }\n                }\n                while (removeTracks.length) {\n                    techTracks.removeTrack(removeTracks.shift());\n                }\n            };\n            this[props.getterName + 'Listeners_'] = listeners;\n            Object.keys(listeners).forEach(eventName => {\n                const listener = listeners[eventName];\n                elTracks.addEventListener(eventName, listener);\n                this.on('dispose', e => elTracks.removeEventListener(eventName, listener));\n            });\n\n            // Remove (native) tracks that are not used anymore\n            this.on('loadstart', removeOldTracks);\n            this.on('dispose', e => this.off('loadstart', removeOldTracks));\n        }\n\n        /**\n         * Proxy all native track list events to our track lists if the browser we are playing\n         * in supports that type of track list.\n         *\n         * @private\n         */\n        proxyNativeTracks_() {\n            NORMAL.names.forEach(name => {\n                this.proxyNativeTracksForType_(name);\n            });\n        }\n\n        /**\n         * Create the `Html5` Tech's DOM element.\n         *\n         * @return {Element}\n         *         The element that gets created.\n         */\n        createEl() {\n            let el = this.options_.tag;\n\n            // Check if this browser supports moving the element into the box.\n            // On the iPhone video will break if you move the element,\n            // So we have to create a brand new element.\n            // If we ingested the player div, we do not need to move the media element.\n            if (!el || !(this.options_.playerElIngest || this.movingMediaElementInDOM)) {\n                // If the original tag is still there, clone and remove it.\n                if (el) {\n                    const clone = el.cloneNode(true);\n                    if (el.parentNode) {\n                        el.parentNode.insertBefore(clone, el);\n                    }\n                    Html5.disposeMediaElement(el);\n                    el = clone;\n                } else {\n                    el = document.createElement('video');\n\n                    // determine if native controls should be used\n                    const tagAttributes = this.options_.tag && getAttributes(this.options_.tag);\n                    const attributes = merge$2({}, tagAttributes);\n                    if (!TOUCH_ENABLED || this.options_.nativeControlsForTouch !== true) {\n                        delete attributes.controls;\n                    }\n                    setAttributes(el, Object.assign(attributes, {\n                        id: this.options_.techId,\n                        class: 'vjs-tech'\n                    }));\n                }\n                el.playerId = this.options_.playerId;\n            }\n            if (typeof this.options_.preload !== 'undefined') {\n                setAttribute(el, 'preload', this.options_.preload);\n            }\n            if (this.options_.disablePictureInPicture !== undefined) {\n                el.disablePictureInPicture = this.options_.disablePictureInPicture;\n            }\n\n            // Update specific tag settings, in case they were overridden\n            // `autoplay` has to be *last* so that `muted` and `playsinline` are present\n            // when iOS/Safari or other browsers attempt to autoplay.\n            const settingsAttrs = ['loop', 'muted', 'playsinline', 'autoplay'];\n            for (let i = 0; i < settingsAttrs.length; i++) {\n                const attr = settingsAttrs[i];\n                const value = this.options_[attr];\n                if (typeof value !== 'undefined') {\n                    if (value) {\n                        setAttribute(el, attr, attr);\n                    } else {\n                        removeAttribute(el, attr);\n                    }\n                    el[attr] = value;\n                }\n            }\n            return el;\n        }\n\n        /**\n         * This will be triggered if the loadstart event has already fired, before videojs was\n         * ready. Two known examples of when this can happen are:\n         * 1. If we're loading the playback object after it has started loading\n         * 2. The media is already playing the (often with autoplay on) then\n         *\n         * This function will fire another loadstart so that videojs can catchup.\n         *\n         * @fires Tech#loadstart\n         *\n         * @return {undefined}\n         *         returns nothing.\n         */\n        handleLateInit_(el) {\n            if (el.networkState === 0 || el.networkState === 3) {\n                // The video element hasn't started loading the source yet\n                // or didn't find a source\n                return;\n            }\n            if (el.readyState === 0) {\n                // NetworkState is set synchronously BUT loadstart is fired at the\n                // end of the current stack, usually before setInterval(fn, 0).\n                // So at this point we know loadstart may have already fired or is\n                // about to fire, and either way the player hasn't seen it yet.\n                // We don't want to fire loadstart prematurely here and cause a\n                // double loadstart so we'll wait and see if it happens between now\n                // and the next loop, and fire it if not.\n                // HOWEVER, we also want to make sure it fires before loadedmetadata\n                // which could also happen between now and the next loop, so we'll\n                // watch for that also.\n                let loadstartFired = false;\n                const setLoadstartFired = function () {\n                    loadstartFired = true;\n                };\n                this.on('loadstart', setLoadstartFired);\n                const triggerLoadstart = function () {\n                    // We did miss the original loadstart. Make sure the player\n                    // sees loadstart before loadedmetadata\n                    if (!loadstartFired) {\n                        this.trigger('loadstart');\n                    }\n                };\n                this.on('loadedmetadata', triggerLoadstart);\n                this.ready(function () {\n                    this.off('loadstart', setLoadstartFired);\n                    this.off('loadedmetadata', triggerLoadstart);\n                    if (!loadstartFired) {\n                        // We did miss the original native loadstart. Fire it now.\n                        this.trigger('loadstart');\n                    }\n                });\n                return;\n            }\n\n            // From here on we know that loadstart already fired and we missed it.\n            // The other readyState events aren't as much of a problem if we double\n            // them, so not going to go to as much trouble as loadstart to prevent\n            // that unless we find reason to.\n            const eventsToTrigger = ['loadstart'];\n\n            // loadedmetadata: newly equal to HAVE_METADATA (1) or greater\n            eventsToTrigger.push('loadedmetadata');\n\n            // loadeddata: newly increased to HAVE_CURRENT_DATA (2) or greater\n            if (el.readyState >= 2) {\n                eventsToTrigger.push('loadeddata');\n            }\n\n            // canplay: newly increased to HAVE_FUTURE_DATA (3) or greater\n            if (el.readyState >= 3) {\n                eventsToTrigger.push('canplay');\n            }\n\n            // canplaythrough: newly equal to HAVE_ENOUGH_DATA (4)\n            if (el.readyState >= 4) {\n                eventsToTrigger.push('canplaythrough');\n            }\n\n            // We still need to give the player time to add event listeners\n            this.ready(function () {\n                eventsToTrigger.forEach(function (type) {\n                    this.trigger(type);\n                }, this);\n            });\n        }\n\n        /**\n         * Set whether we are scrubbing or not.\n         * This is used to decide whether we should use `fastSeek` or not.\n         * `fastSeek` is used to provide trick play on Safari browsers.\n         *\n         * @param {boolean} isScrubbing\n         *                  - true for we are currently scrubbing\n         *                  - false for we are no longer scrubbing\n         */\n        setScrubbing(isScrubbing) {\n            this.isScrubbing_ = isScrubbing;\n        }\n\n        /**\n         * Get whether we are scrubbing or not.\n         *\n         * @return {boolean} isScrubbing\n         *                  - true for we are currently scrubbing\n         *                  - false for we are no longer scrubbing\n         */\n        scrubbing() {\n            return this.isScrubbing_;\n        }\n\n        /**\n         * Set current time for the `HTML5` tech.\n         *\n         * @param {number} seconds\n         *        Set the current time of the media to this.\n         */\n        setCurrentTime(seconds) {\n            try {\n                if (this.isScrubbing_ && this.el_.fastSeek && IS_ANY_SAFARI) {\n                    this.el_.fastSeek(seconds);\n                } else {\n                    this.el_.currentTime = seconds;\n                }\n            } catch (e) {\n                log$1(e, 'Video is not ready. (Video.js)');\n                // this.warning(VideoJS.warnings.videoNotReady);\n            }\n        }\n\n        /**\n         * Get the current duration of the HTML5 media element.\n         *\n         * @return {number}\n         *         The duration of the media or 0 if there is no duration.\n         */\n        duration() {\n            // Android Chrome will report duration as Infinity for VOD HLS until after\n            // playback has started, which triggers the live display erroneously.\n            // Return NaN if playback has not started and trigger a durationupdate once\n            // the duration can be reliably known.\n            if (this.el_.duration === Infinity && IS_ANDROID && IS_CHROME && this.el_.currentTime === 0) {\n                // Wait for the first `timeupdate` with currentTime > 0 - there may be\n                // several with 0\n                const checkProgress = () => {\n                    if (this.el_.currentTime > 0) {\n                        // Trigger durationchange for genuinely live video\n                        if (this.el_.duration === Infinity) {\n                            this.trigger('durationchange');\n                        }\n                        this.off('timeupdate', checkProgress);\n                    }\n                };\n                this.on('timeupdate', checkProgress);\n                return NaN;\n            }\n            return this.el_.duration || NaN;\n        }\n\n        /**\n         * Get the current width of the HTML5 media element.\n         *\n         * @return {number}\n         *         The width of the HTML5 media element.\n         */\n        width() {\n            return this.el_.offsetWidth;\n        }\n\n        /**\n         * Get the current height of the HTML5 media element.\n         *\n         * @return {number}\n         *         The height of the HTML5 media element.\n         */\n        height() {\n            return this.el_.offsetHeight;\n        }\n\n        /**\n         * Proxy iOS `webkitbeginfullscreen` and `webkitendfullscreen` into\n         * `fullscreenchange` event.\n         *\n         * @private\n         * @fires fullscreenchange\n         * @listens webkitendfullscreen\n         * @listens webkitbeginfullscreen\n         * @listens webkitbeginfullscreen\n         */\n        proxyWebkitFullscreen_() {\n            if (!('webkitDisplayingFullscreen' in this.el_)) {\n                return;\n            }\n            const endFn = function () {\n                this.trigger('fullscreenchange', {\n                    isFullscreen: false\n                });\n                // Safari will sometimes set controls on the videoelement when existing fullscreen.\n                if (this.el_.controls && !this.options_.nativeControlsForTouch && this.controls()) {\n                    this.el_.controls = false;\n                }\n            };\n            const beginFn = function () {\n                if ('webkitPresentationMode' in this.el_ && this.el_.webkitPresentationMode !== 'picture-in-picture') {\n                    this.one('webkitendfullscreen', endFn);\n                    this.trigger('fullscreenchange', {\n                        isFullscreen: true,\n                        // set a flag in case another tech triggers fullscreenchange\n                        nativeIOSFullscreen: true\n                    });\n                }\n            };\n            this.on('webkitbeginfullscreen', beginFn);\n            this.on('dispose', () => {\n                this.off('webkitbeginfullscreen', beginFn);\n                this.off('webkitendfullscreen', endFn);\n            });\n        }\n\n        /**\n         * Check if fullscreen is supported on the video el.\n         *\n         * @return {boolean}\n         *         - True if fullscreen is supported.\n         *         - False if fullscreen is not supported.\n         */\n        supportsFullScreen() {\n            return typeof this.el_.webkitEnterFullScreen === 'function';\n        }\n\n        /**\n         * Request that the `HTML5` Tech enter fullscreen.\n         */\n        enterFullScreen() {\n            const video = this.el_;\n            if (video.paused && video.networkState <= video.HAVE_METADATA) {\n                // attempt to prime the video element for programmatic access\n                // this isn't necessary on the desktop but shouldn't hurt\n                silencePromise(this.el_.play());\n\n                // playing and pausing synchronously during the transition to fullscreen\n                // can get iOS ~6.1 devices into a play/pause loop\n                this.setTimeout(function () {\n                    video.pause();\n                    try {\n                        video.webkitEnterFullScreen();\n                    } catch (e) {\n                        this.trigger('fullscreenerror', e);\n                    }\n                }, 0);\n            } else {\n                try {\n                    video.webkitEnterFullScreen();\n                } catch (e) {\n                    this.trigger('fullscreenerror', e);\n                }\n            }\n        }\n\n        /**\n         * Request that the `HTML5` Tech exit fullscreen.\n         */\n        exitFullScreen() {\n            if (!this.el_.webkitDisplayingFullscreen) {\n                this.trigger('fullscreenerror', new Error('The video is not fullscreen'));\n                return;\n            }\n            this.el_.webkitExitFullScreen();\n        }\n\n        /**\n         * Create a floating video window always on top of other windows so that users may\n         * continue consuming media while they interact with other content sites, or\n         * applications on their device.\n         *\n         * @see [Spec]{@link https://wicg.github.io/picture-in-picture}\n         *\n         * @return {Promise}\n         *         A promise with a Picture-in-Picture window.\n         */\n        requestPictureInPicture() {\n            return this.el_.requestPictureInPicture();\n        }\n\n        /**\n         * Native requestVideoFrameCallback if supported by browser/tech, or fallback\n         * Don't use rVCF on Safari when DRM is playing, as it doesn't fire\n         * Needs to be checked later than the constructor\n         * This will be a false positive for clear sources loaded after a Fairplay source\n         *\n         * @param {function} cb function to call\n         * @return {number} id of request\n         */\n        requestVideoFrameCallback(cb) {\n            if (this.featuresVideoFrameCallback && !this.el_.webkitKeys) {\n                return this.el_.requestVideoFrameCallback(cb);\n            }\n            return super.requestVideoFrameCallback(cb);\n        }\n\n        /**\n         * Native or fallback requestVideoFrameCallback\n         *\n         * @param {number} id request id to cancel\n         */\n        cancelVideoFrameCallback(id) {\n            if (this.featuresVideoFrameCallback && !this.el_.webkitKeys) {\n                this.el_.cancelVideoFrameCallback(id);\n            } else {\n                super.cancelVideoFrameCallback(id);\n            }\n        }\n\n        /**\n         * A getter/setter for the `Html5` Tech's source object.\n         * > Note: Please use {@link Html5#setSource}\n         *\n         * @param {Tech~SourceObject} [src]\n         *        The source object you want to set on the `HTML5` techs element.\n         *\n         * @return {Tech~SourceObject|undefined}\n         *         - The current source object when a source is not passed in.\n         *         - undefined when setting\n         *\n         * @deprecated Since version 5.\n         */\n        src(src) {\n            if (src === undefined) {\n                return this.el_.src;\n            }\n\n            // Setting src through `src` instead of `setSrc` will be deprecated\n            this.setSrc(src);\n        }\n\n        /**\n         * Reset the tech by removing all sources and then calling\n         * {@link Html5.resetMediaElement}.\n         */\n        reset() {\n            Html5.resetMediaElement(this.el_);\n        }\n\n        /**\n         * Get the current source on the `HTML5` Tech. Falls back to returning the source from\n         * the HTML5 media element.\n         *\n         * @return {Tech~SourceObject}\n         *         The current source object from the HTML5 tech. With a fallback to the\n         *         elements source.\n         */\n        currentSrc() {\n            if (this.currentSource_) {\n                return this.currentSource_.src;\n            }\n            return this.el_.currentSrc;\n        }\n\n        /**\n         * Set controls attribute for the HTML5 media Element.\n         *\n         * @param {string} val\n         *        Value to set the controls attribute to\n         */\n        setControls(val) {\n            this.el_.controls = !!val;\n        }\n\n        /**\n         * Create and returns a remote {@link TextTrack} object.\n         *\n         * @param {string} kind\n         *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)\n         *\n         * @param {string} [label]\n         *        Label to identify the text track\n         *\n         * @param {string} [language]\n         *        Two letter language abbreviation\n         *\n         * @return {TextTrack}\n         *         The TextTrack that gets created.\n         */\n        addTextTrack(kind, label, language) {\n            if (!this.featuresNativeTextTracks) {\n                return super.addTextTrack(kind, label, language);\n            }\n            return this.el_.addTextTrack(kind, label, language);\n        }\n\n        /**\n         * Creates either native TextTrack or an emulated TextTrack depending\n         * on the value of `featuresNativeTextTracks`\n         *\n         * @param {Object} options\n         *        The object should contain the options to initialize the TextTrack with.\n         *\n         * @param {string} [options.kind]\n         *        `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata).\n         *\n         * @param {string} [options.label]\n         *        Label to identify the text track\n         *\n         * @param {string} [options.language]\n         *        Two letter language abbreviation.\n         *\n         * @param {boolean} [options.default]\n         *        Default this track to on.\n         *\n         * @param {string} [options.id]\n         *        The internal id to assign this track.\n         *\n         * @param {string} [options.src]\n         *        A source url for the track.\n         *\n         * @return {HTMLTrackElement}\n         *         The track element that gets created.\n         */\n        createRemoteTextTrack(options) {\n            if (!this.featuresNativeTextTracks) {\n                return super.createRemoteTextTrack(options);\n            }\n            const htmlTrackElement = document.createElement('track');\n            if (options.kind) {\n                htmlTrackElement.kind = options.kind;\n            }\n            if (options.label) {\n                htmlTrackElement.label = options.label;\n            }\n            if (options.language || options.srclang) {\n                htmlTrackElement.srclang = options.language || options.srclang;\n            }\n            if (options.default) {\n                htmlTrackElement.default = options.default;\n            }\n            if (options.id) {\n                htmlTrackElement.id = options.id;\n            }\n            if (options.src) {\n                htmlTrackElement.src = options.src;\n            }\n            return htmlTrackElement;\n        }\n\n        /**\n         * Creates a remote text track object and returns an html track element.\n         *\n         * @param {Object} options The object should contain values for\n         * kind, language, label, and src (location of the WebVTT file)\n         * @param {boolean} [manualCleanup=false] if set to true, the TextTrack\n         * will not be removed from the TextTrackList and HtmlTrackElementList\n         * after a source change\n         * @return {HTMLTrackElement} An Html Track Element.\n         * This can be an emulated {@link HTMLTrackElement} or a native one.\n         *\n         */\n        addRemoteTextTrack(options, manualCleanup) {\n            const htmlTrackElement = super.addRemoteTextTrack(options, manualCleanup);\n            if (this.featuresNativeTextTracks) {\n                this.el().appendChild(htmlTrackElement);\n            }\n            return htmlTrackElement;\n        }\n\n        /**\n         * Remove remote `TextTrack` from `TextTrackList` object\n         *\n         * @param {TextTrack} track\n         *        `TextTrack` object to remove\n         */\n        removeRemoteTextTrack(track) {\n            super.removeRemoteTextTrack(track);\n            if (this.featuresNativeTextTracks) {\n                const tracks = this.$$('track');\n                let i = tracks.length;\n                while (i--) {\n                    if (track === tracks[i] || track === tracks[i].track) {\n                        this.el().removeChild(tracks[i]);\n                    }\n                }\n            }\n        }\n\n        /**\n         * Gets available media playback quality metrics as specified by the W3C's Media\n         * Playback Quality API.\n         *\n         * @see [Spec]{@link https://wicg.github.io/media-playback-quality}\n         *\n         * @return {Object}\n         *         An object with supported media playback quality metrics\n         */\n        getVideoPlaybackQuality() {\n            if (typeof this.el().getVideoPlaybackQuality === 'function') {\n                return this.el().getVideoPlaybackQuality();\n            }\n            const videoPlaybackQuality = {};\n            if (typeof this.el().webkitDroppedFrameCount !== 'undefined' && typeof this.el().webkitDecodedFrameCount !== 'undefined') {\n                videoPlaybackQuality.droppedVideoFrames = this.el().webkitDroppedFrameCount;\n                videoPlaybackQuality.totalVideoFrames = this.el().webkitDecodedFrameCount;\n            }\n            if (window.performance) {\n                videoPlaybackQuality.creationTime = window.performance.now();\n            }\n            return videoPlaybackQuality;\n        }\n    }\n\n    /* HTML5 Support Testing ---------------------------------------------------- */\n\n    /**\n     * Element for testing browser HTML5 media capabilities\n     *\n     * @type {Element}\n     * @constant\n     * @private\n     */\n    defineLazyProperty(Html5, 'TEST_VID', function () {\n        if (!isReal()) {\n            return;\n        }\n        const video = document.createElement('video');\n        const track = document.createElement('track');\n        track.kind = 'captions';\n        track.srclang = 'en';\n        track.label = 'English';\n        video.appendChild(track);\n        return video;\n    });\n\n    /**\n     * Check if HTML5 media is supported by this browser/device.\n     *\n     * @return {boolean}\n     *         - True if HTML5 media is supported.\n     *         - False if HTML5 media is not supported.\n     */\n    Html5.isSupported = function () {\n        // IE with no Media Player is a LIAR! (#984)\n        try {\n            Html5.TEST_VID.volume = 0.5;\n        } catch (e) {\n            return false;\n        }\n        return !!(Html5.TEST_VID && Html5.TEST_VID.canPlayType);\n    };\n\n    /**\n     * Check if the tech can support the given type\n     *\n     * @param {string} type\n     *        The mimetype to check\n     * @return {string} 'probably', 'maybe', or '' (empty string)\n     */\n    Html5.canPlayType = function (type) {\n        return Html5.TEST_VID.canPlayType(type);\n    };\n\n    /**\n     * Check if the tech can support the given source\n     *\n     * @param {Object} srcObj\n     *        The source object\n     * @param {Object} options\n     *        The options passed to the tech\n     * @return {string} 'probably', 'maybe', or '' (empty string)\n     */\n    Html5.canPlaySource = function (srcObj, options) {\n        return Html5.canPlayType(srcObj.type);\n    };\n\n    /**\n     * Check if the volume can be changed in this browser/device.\n     * Volume cannot be changed in a lot of mobile devices.\n     * Specifically, it can't be changed from 1 on iOS.\n     *\n     * @return {boolean}\n     *         - True if volume can be controlled\n     *         - False otherwise\n     */\n    Html5.canControlVolume = function () {\n        // IE will error if Windows Media Player not installed #3315\n        try {\n            const volume = Html5.TEST_VID.volume;\n            Html5.TEST_VID.volume = volume / 2 + 0.1;\n            const canControl = volume !== Html5.TEST_VID.volume;\n\n            // With the introduction of iOS 15, there are cases where the volume is read as\n            // changed but reverts back to its original state at the start of the next tick.\n            // To determine whether volume can be controlled on iOS,\n            // a timeout is set and the volume is checked asynchronously.\n            // Since `features` doesn't currently work asynchronously, the value is manually set.\n            if (canControl && IS_IOS) {\n                window.setTimeout(() => {\n                    if (Html5 && Html5.prototype) {\n                        Html5.prototype.featuresVolumeControl = volume !== Html5.TEST_VID.volume;\n                    }\n                });\n\n                // default iOS to false, which will be updated in the timeout above.\n                return false;\n            }\n            return canControl;\n        } catch (e) {\n            return false;\n        }\n    };\n\n    /**\n     * Check if the volume can be muted in this browser/device.\n     * Some devices, e.g. iOS, don't allow changing volume\n     * but permits muting/unmuting.\n     *\n     * @return {boolean}\n     *      - True if volume can be muted\n     *      - False otherwise\n     */\n    Html5.canMuteVolume = function () {\n        try {\n            const muted = Html5.TEST_VID.muted;\n\n            // in some versions of iOS muted property doesn't always\n            // work, so we want to set both property and attribute\n            Html5.TEST_VID.muted = !muted;\n            if (Html5.TEST_VID.muted) {\n                setAttribute(Html5.TEST_VID, 'muted', 'muted');\n            } else {\n                removeAttribute(Html5.TEST_VID, 'muted', 'muted');\n            }\n            return muted !== Html5.TEST_VID.muted;\n        } catch (e) {\n            return false;\n        }\n    };\n\n    /**\n     * Check if the playback rate can be changed in this browser/device.\n     *\n     * @return {boolean}\n     *         - True if playback rate can be controlled\n     *         - False otherwise\n     */\n    Html5.canControlPlaybackRate = function () {\n        // Playback rate API is implemented in Android Chrome, but doesn't do anything\n        // https://github.com/videojs/video.js/issues/3180\n        if (IS_ANDROID && IS_CHROME && CHROME_VERSION < 58) {\n            return false;\n        }\n        // IE will error if Windows Media Player not installed #3315\n        try {\n            const playbackRate = Html5.TEST_VID.playbackRate;\n            Html5.TEST_VID.playbackRate = playbackRate / 2 + 0.1;\n            return playbackRate !== Html5.TEST_VID.playbackRate;\n        } catch (e) {\n            return false;\n        }\n    };\n\n    /**\n     * Check if we can override a video/audio elements attributes, with\n     * Object.defineProperty.\n     *\n     * @return {boolean}\n     *         - True if builtin attributes can be overridden\n     *         - False otherwise\n     */\n    Html5.canOverrideAttributes = function () {\n        // if we cannot overwrite the src/innerHTML property, there is no support\n        // iOS 7 safari for instance cannot do this.\n        try {\n            const noop = () => {};\n            Object.defineProperty(document.createElement('video'), 'src', {\n                get: noop,\n                set: noop\n            });\n            Object.defineProperty(document.createElement('audio'), 'src', {\n                get: noop,\n                set: noop\n            });\n            Object.defineProperty(document.createElement('video'), 'innerHTML', {\n                get: noop,\n                set: noop\n            });\n            Object.defineProperty(document.createElement('audio'), 'innerHTML', {\n                get: noop,\n                set: noop\n            });\n        } catch (e) {\n            return false;\n        }\n        return true;\n    };\n\n    /**\n     * Check to see if native `TextTrack`s are supported by this browser/device.\n     *\n     * @return {boolean}\n     *         - True if native `TextTrack`s are supported.\n     *         - False otherwise\n     */\n    Html5.supportsNativeTextTracks = function () {\n        return IS_ANY_SAFARI || IS_IOS && IS_CHROME;\n    };\n\n    /**\n     * Check to see if native `VideoTrack`s are supported by this browser/device\n     *\n     * @return {boolean}\n     *        - True if native `VideoTrack`s are supported.\n     *        - False otherwise\n     */\n    Html5.supportsNativeVideoTracks = function () {\n        return !!(Html5.TEST_VID && Html5.TEST_VID.videoTracks);\n    };\n\n    /**\n     * Check to see if native `AudioTrack`s are supported by this browser/device\n     *\n     * @return {boolean}\n     *        - True if native `AudioTrack`s are supported.\n     *        - False otherwise\n     */\n    Html5.supportsNativeAudioTracks = function () {\n        return !!(Html5.TEST_VID && Html5.TEST_VID.audioTracks);\n    };\n\n    /**\n     * An array of events available on the Html5 tech.\n     *\n     * @private\n     * @type {Array}\n     */\n    Html5.Events = ['loadstart', 'suspend', 'abort', 'error', 'emptied', 'stalled', 'loadedmetadata', 'loadeddata', 'canplay', 'canplaythrough', 'playing', 'waiting', 'seeking', 'seeked', 'ended', 'durationchange', 'timeupdate', 'progress', 'play', 'pause', 'ratechange', 'resize', 'volumechange'];\n\n    /**\n     * Boolean indicating whether the `Tech` supports volume control.\n     *\n     * @type {boolean}\n     * @default {@link Html5.canControlVolume}\n     */\n    /**\n     * Boolean indicating whether the `Tech` supports muting volume.\n     *\n     * @type {boolean}\n     * @default {@link Html5.canMuteVolume}\n     */\n\n    /**\n     * Boolean indicating whether the `Tech` supports changing the speed at which the media\n     * plays. Examples:\n     *   - Set player to play 2x (twice) as fast\n     *   - Set player to play 0.5x (half) as fast\n     *\n     * @type {boolean}\n     * @default {@link Html5.canControlPlaybackRate}\n     */\n\n    /**\n     * Boolean indicating whether the `Tech` supports the `sourceset` event.\n     *\n     * @type {boolean}\n     * @default\n     */\n    /**\n     * Boolean indicating whether the `HTML5` tech currently supports native `TextTrack`s.\n     *\n     * @type {boolean}\n     * @default {@link Html5.supportsNativeTextTracks}\n     */\n    /**\n     * Boolean indicating whether the `HTML5` tech currently supports native `VideoTrack`s.\n     *\n     * @type {boolean}\n     * @default {@link Html5.supportsNativeVideoTracks}\n     */\n    /**\n     * Boolean indicating whether the `HTML5` tech currently supports native `AudioTrack`s.\n     *\n     * @type {boolean}\n     * @default {@link Html5.supportsNativeAudioTracks}\n     */\n    [['featuresMuteControl', 'canMuteVolume'], ['featuresPlaybackRate', 'canControlPlaybackRate'], ['featuresSourceset', 'canOverrideAttributes'], ['featuresNativeTextTracks', 'supportsNativeTextTracks'], ['featuresNativeVideoTracks', 'supportsNativeVideoTracks'], ['featuresNativeAudioTracks', 'supportsNativeAudioTracks']].forEach(function ([key, fn]) {\n        defineLazyProperty(Html5.prototype, key, () => Html5[fn](), true);\n    });\n    Html5.prototype.featuresVolumeControl = Html5.canControlVolume();\n\n    /**\n     * Boolean indicating whether the `HTML5` tech currently supports the media element\n     * moving in the DOM. iOS breaks if you move the media element, so this is set this to\n     * false there. Everywhere else this should be true.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Html5.prototype.movingMediaElementInDOM = !IS_IOS;\n\n    // TODO: Previous comment: No longer appears to be used. Can probably be removed.\n    //       Is this true?\n    /**\n     * Boolean indicating whether the `HTML5` tech currently supports automatic media resize\n     * when going into fullscreen.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Html5.prototype.featuresFullscreenResize = true;\n\n    /**\n     * Boolean indicating whether the `HTML5` tech currently supports the progress event.\n     * If this is false, manual `progress` events will be triggered instead.\n     *\n     * @type {boolean}\n     * @default\n     */\n    Html5.prototype.featuresProgressEvents = true;\n\n    /**\n     * Boolean indicating whether the `HTML5` tech currently supports the timeupdate event.\n     * If this is false, manual `timeupdate` events will be triggered instead.\n     *\n     * @default\n     */\n    Html5.prototype.featuresTimeupdateEvents = true;\n\n    /**\n     * Whether the HTML5 el supports `requestVideoFrameCallback`\n     *\n     * @type {boolean}\n     */\n    Html5.prototype.featuresVideoFrameCallback = !!(Html5.TEST_VID && Html5.TEST_VID.requestVideoFrameCallback);\n    Html5.disposeMediaElement = function (el) {\n        if (!el) {\n            return;\n        }\n        if (el.parentNode) {\n            el.parentNode.removeChild(el);\n        }\n\n        // remove any child track or source nodes to prevent their loading\n        while (el.hasChildNodes()) {\n            el.removeChild(el.firstChild);\n        }\n\n        // remove any src reference. not setting `src=''` because that causes a warning\n        // in firefox\n        el.removeAttribute('src');\n\n        // force the media element to update its loading state by calling load()\n        // however IE on Windows 7N has a bug that throws an error so need a try/catch (#793)\n        if (typeof el.load === 'function') {\n            // wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473)\n            (function () {\n                try {\n                    el.load();\n                } catch (e) {\n                    // not supported\n                }\n            })();\n        }\n    };\n    Html5.resetMediaElement = function (el) {\n        if (!el) {\n            return;\n        }\n        const sources = el.querySelectorAll('source');\n        let i = sources.length;\n        while (i--) {\n            el.removeChild(sources[i]);\n        }\n\n        // remove any src reference.\n        // not setting `src=''` because that throws an error\n        el.removeAttribute('src');\n        if (typeof el.load === 'function') {\n            // wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473)\n            (function () {\n                try {\n                    el.load();\n                } catch (e) {\n                    // satisfy linter\n                }\n            })();\n        }\n    };\n\n    /* Native HTML5 element property wrapping ----------------------------------- */\n    // Wrap native boolean attributes with getters that check both property and attribute\n    // The list is as followed:\n    // muted, defaultMuted, autoplay, controls, loop, playsinline\n    [\n        /**\n         * Get the value of `muted` from the media element. `muted` indicates\n         * that the volume for the media should be set to silent. This does not actually change\n         * the `volume` attribute.\n         *\n         * @method Html5#muted\n         * @return {boolean}\n         *         - True if the value of `volume` should be ignored and the audio set to silent.\n         *         - False if the value of `volume` should be used.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted}\n         */\n        'muted',\n        /**\n         * Get the value of `defaultMuted` from the media element. `defaultMuted` indicates\n         * whether the media should start muted or not. Only changes the default state of the\n         * media. `muted` and `defaultMuted` can have different values. {@link Html5#muted} indicates the\n         * current state.\n         *\n         * @method Html5#defaultMuted\n         * @return {boolean}\n         *         - The value of `defaultMuted` from the media element.\n         *         - True indicates that the media should start muted.\n         *         - False indicates that the media should not start muted\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted}\n         */\n        'defaultMuted',\n        /**\n         * Get the value of `autoplay` from the media element. `autoplay` indicates\n         * that the media should start to play as soon as the page is ready.\n         *\n         * @method Html5#autoplay\n         * @return {boolean}\n         *         - The value of `autoplay` from the media element.\n         *         - True indicates that the media should start as soon as the page loads.\n         *         - False indicates that the media should not start as soon as the page loads.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay}\n         */\n        'autoplay',\n        /**\n         * Get the value of `controls` from the media element. `controls` indicates\n         * whether the native media controls should be shown or hidden.\n         *\n         * @method Html5#controls\n         * @return {boolean}\n         *         - The value of `controls` from the media element.\n         *         - True indicates that native controls should be showing.\n         *         - False indicates that native controls should be hidden.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-controls}\n         */\n        'controls',\n        /**\n         * Get the value of `loop` from the media element. `loop` indicates\n         * that the media should return to the start of the media and continue playing once\n         * it reaches the end.\n         *\n         * @method Html5#loop\n         * @return {boolean}\n         *         - The value of `loop` from the media element.\n         *         - True indicates that playback should seek back to start once\n         *           the end of a media is reached.\n         *         - False indicates that playback should not loop back to the start when the\n         *           end of the media is reached.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop}\n         */\n        'loop',\n        /**\n         * Get the value of `playsinline` from the media element. `playsinline` indicates\n         * to the browser that non-fullscreen playback is preferred when fullscreen\n         * playback is the native default, such as in iOS Safari.\n         *\n         * @method Html5#playsinline\n         * @return {boolean}\n         *         - The value of `playsinline` from the media element.\n         *         - True indicates that the media should play inline.\n         *         - False indicates that the media should not play inline.\n         *\n         * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}\n         */\n        'playsinline'].forEach(function (prop) {\n        Html5.prototype[prop] = function () {\n            return this.el_[prop] || this.el_.hasAttribute(prop);\n        };\n    });\n\n    // Wrap native boolean attributes with setters that set both property and attribute\n    // The list is as followed:\n    // setMuted, setDefaultMuted, setAutoplay, setLoop, setPlaysinline\n    // setControls is special-cased above\n    [\n        /**\n         * Set the value of `muted` on the media element. `muted` indicates that the current\n         * audio level should be silent.\n         *\n         * @method Html5#setMuted\n         * @param {boolean} muted\n         *        - True if the audio should be set to silent\n         *        - False otherwise\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted}\n         */\n        'muted',\n        /**\n         * Set the value of `defaultMuted` on the media element. `defaultMuted` indicates that the current\n         * audio level should be silent, but will only effect the muted level on initial playback..\n         *\n         * @method Html5.prototype.setDefaultMuted\n         * @param {boolean} defaultMuted\n         *        - True if the audio should be set to silent\n         *        - False otherwise\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted}\n         */\n        'defaultMuted',\n        /**\n         * Set the value of `autoplay` on the media element. `autoplay` indicates\n         * that the media should start to play as soon as the page is ready.\n         *\n         * @method Html5#setAutoplay\n         * @param {boolean} autoplay\n         *         - True indicates that the media should start as soon as the page loads.\n         *         - False indicates that the media should not start as soon as the page loads.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay}\n         */\n        'autoplay',\n        /**\n         * Set the value of `loop` on the media element. `loop` indicates\n         * that the media should return to the start of the media and continue playing once\n         * it reaches the end.\n         *\n         * @method Html5#setLoop\n         * @param {boolean} loop\n         *         - True indicates that playback should seek back to start once\n         *           the end of a media is reached.\n         *         - False indicates that playback should not loop back to the start when the\n         *           end of the media is reached.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop}\n         */\n        'loop',\n        /**\n         * Set the value of `playsinline` from the media element. `playsinline` indicates\n         * to the browser that non-fullscreen playback is preferred when fullscreen\n         * playback is the native default, such as in iOS Safari.\n         *\n         * @method Html5#setPlaysinline\n         * @param {boolean} playsinline\n         *         - True indicates that the media should play inline.\n         *         - False indicates that the media should not play inline.\n         *\n         * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}\n         */\n        'playsinline'].forEach(function (prop) {\n        Html5.prototype['set' + toTitleCase$1(prop)] = function (v) {\n            this.el_[prop] = v;\n            if (v) {\n                this.el_.setAttribute(prop, prop);\n            } else {\n                this.el_.removeAttribute(prop);\n            }\n        };\n    });\n\n    // Wrap native properties with a getter\n    // The list is as followed\n    // paused, currentTime, buffered, volume, poster, preload, error, seeking\n    // seekable, ended, playbackRate, defaultPlaybackRate, disablePictureInPicture\n    // played, networkState, readyState, videoWidth, videoHeight, crossOrigin\n    [\n        /**\n         * Get the value of `paused` from the media element. `paused` indicates whether the media element\n         * is currently paused or not.\n         *\n         * @method Html5#paused\n         * @return {boolean}\n         *         The value of `paused` from the media element.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-paused}\n         */\n        'paused',\n        /**\n         * Get the value of `currentTime` from the media element. `currentTime` indicates\n         * the current second that the media is at in playback.\n         *\n         * @method Html5#currentTime\n         * @return {number}\n         *         The value of `currentTime` from the media element.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-currenttime}\n         */\n        'currentTime',\n        /**\n         * Get the value of `buffered` from the media element. `buffered` is a `TimeRange`\n         * object that represents the parts of the media that are already downloaded and\n         * available for playback.\n         *\n         * @method Html5#buffered\n         * @return {TimeRange}\n         *         The value of `buffered` from the media element.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-buffered}\n         */\n        'buffered',\n        /**\n         * Get the value of `volume` from the media element. `volume` indicates\n         * the current playback volume of audio for a media. `volume` will be a value from 0\n         * (silent) to 1 (loudest and default).\n         *\n         * @method Html5#volume\n         * @return {number}\n         *         The value of `volume` from the media element. Value will be between 0-1.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume}\n         */\n        'volume',\n        /**\n         * Get the value of `poster` from the media element. `poster` indicates\n         * that the url of an image file that can/will be shown when no media data is available.\n         *\n         * @method Html5#poster\n         * @return {string}\n         *         The value of `poster` from the media element. Value will be a url to an\n         *         image.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-video-poster}\n         */\n        'poster',\n        /**\n         * Get the value of `preload` from the media element. `preload` indicates\n         * what should download before the media is interacted with. It can have the following\n         * values:\n         * - none: nothing should be downloaded\n         * - metadata: poster and the first few frames of the media may be downloaded to get\n         *   media dimensions and other metadata\n         * - auto: allow the media and metadata for the media to be downloaded before\n         *    interaction\n         *\n         * @method Html5#preload\n         * @return {string}\n         *         The value of `preload` from the media element. Will be 'none', 'metadata',\n         *         or 'auto'.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload}\n         */\n        'preload',\n        /**\n         * Get the value of the `error` from the media element. `error` indicates any\n         * MediaError that may have occurred during playback. If error returns null there is no\n         * current error.\n         *\n         * @method Html5#error\n         * @return {MediaError|null}\n         *         The value of `error` from the media element. Will be `MediaError` if there\n         *         is a current error and null otherwise.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-error}\n         */\n        'error',\n        /**\n         * Get the value of `seeking` from the media element. `seeking` indicates whether the\n         * media is currently seeking to a new position or not.\n         *\n         * @method Html5#seeking\n         * @return {boolean}\n         *         - The value of `seeking` from the media element.\n         *         - True indicates that the media is currently seeking to a new position.\n         *         - False indicates that the media is not seeking to a new position at this time.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seeking}\n         */\n        'seeking',\n        /**\n         * Get the value of `seekable` from the media element. `seekable` returns a\n         * `TimeRange` object indicating ranges of time that can currently be `seeked` to.\n         *\n         * @method Html5#seekable\n         * @return {TimeRange}\n         *         The value of `seekable` from the media element. A `TimeRange` object\n         *         indicating the current ranges of time that can be seeked to.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seekable}\n         */\n        'seekable',\n        /**\n         * Get the value of `ended` from the media element. `ended` indicates whether\n         * the media has reached the end or not.\n         *\n         * @method Html5#ended\n         * @return {boolean}\n         *         - The value of `ended` from the media element.\n         *         - True indicates that the media has ended.\n         *         - False indicates that the media has not ended.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-ended}\n         */\n        'ended',\n        /**\n         * Get the value of `playbackRate` from the media element. `playbackRate` indicates\n         * the rate at which the media is currently playing back. Examples:\n         *   - if playbackRate is set to 2, media will play twice as fast.\n         *   - if playbackRate is set to 0.5, media will play half as fast.\n         *\n         * @method Html5#playbackRate\n         * @return {number}\n         *         The value of `playbackRate` from the media element. A number indicating\n         *         the current playback speed of the media, where 1 is normal speed.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}\n         */\n        'playbackRate',\n        /**\n         * Get the value of `defaultPlaybackRate` from the media element. `defaultPlaybackRate` indicates\n         * the rate at which the media is currently playing back. This value will not indicate the current\n         * `playbackRate` after playback has started, use {@link Html5#playbackRate} for that.\n         *\n         * Examples:\n         *   - if defaultPlaybackRate is set to 2, media will play twice as fast.\n         *   - if defaultPlaybackRate is set to 0.5, media will play half as fast.\n         *\n         * @method Html5.prototype.defaultPlaybackRate\n         * @return {number}\n         *         The value of `defaultPlaybackRate` from the media element. A number indicating\n         *         the current playback speed of the media, where 1 is normal speed.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}\n         */\n        'defaultPlaybackRate',\n        /**\n         * Get the value of 'disablePictureInPicture' from the video element.\n         *\n         * @method Html5#disablePictureInPicture\n         * @return {boolean} value\n         *         - The value of `disablePictureInPicture` from the video element.\n         *         - True indicates that the video can't be played in Picture-In-Picture mode\n         *         - False indicates that the video can be played in Picture-In-Picture mode\n         *\n         * @see [Spec]{@link https://w3c.github.io/picture-in-picture/#disable-pip}\n         */\n        'disablePictureInPicture',\n        /**\n         * Get the value of `played` from the media element. `played` returns a `TimeRange`\n         * object representing points in the media timeline that have been played.\n         *\n         * @method Html5#played\n         * @return {TimeRange}\n         *         The value of `played` from the media element. A `TimeRange` object indicating\n         *         the ranges of time that have been played.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-played}\n         */\n        'played',\n        /**\n         * Get the value of `networkState` from the media element. `networkState` indicates\n         * the current network state. It returns an enumeration from the following list:\n         * - 0: NETWORK_EMPTY\n         * - 1: NETWORK_IDLE\n         * - 2: NETWORK_LOADING\n         * - 3: NETWORK_NO_SOURCE\n         *\n         * @method Html5#networkState\n         * @return {number}\n         *         The value of `networkState` from the media element. This will be a number\n         *         from the list in the description.\n         *\n         * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-networkstate}\n         */\n        'networkState',\n        /**\n         * Get the value of `readyState` from the media element. `readyState` indicates\n         * the current state of the media element. It returns an enumeration from the\n         * following list:\n         * - 0: HAVE_NOTHING\n         * - 1: HAVE_METADATA\n         * - 2: HAVE_CURRENT_DATA\n         * - 3: HAVE_FUTURE_DATA\n         * - 4: HAVE_ENOUGH_DATA\n         *\n         * @method Html5#readyState\n         * @return {number}\n         *         The value of `readyState` from the media element. This will be a number\n         *         from the list in the description.\n         *\n         * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#ready-states}\n         */\n        'readyState',\n        /**\n         * Get the value of `videoWidth` from the video element. `videoWidth` indicates\n         * the current width of the video in css pixels.\n         *\n         * @method Html5#videoWidth\n         * @return {number}\n         *         The value of `videoWidth` from the video element. This will be a number\n         *         in css pixels.\n         *\n         * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth}\n         */\n        'videoWidth',\n        /**\n         * Get the value of `videoHeight` from the video element. `videoHeight` indicates\n         * the current height of the video in css pixels.\n         *\n         * @method Html5#videoHeight\n         * @return {number}\n         *         The value of `videoHeight` from the video element. This will be a number\n         *         in css pixels.\n         *\n         * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth}\n         */\n        'videoHeight',\n        /**\n         * Get the value of `crossOrigin` from the media element. `crossOrigin` indicates\n         * to the browser that should sent the cookies along with the requests for the\n         * different assets/playlists\n         *\n         * @method Html5#crossOrigin\n         * @return {string}\n         *         - anonymous indicates that the media should not sent cookies.\n         *         - use-credentials indicates that the media should sent cookies along the requests.\n         *\n         * @see [Spec]{@link https://html.spec.whatwg.org/#attr-media-crossorigin}\n         */\n        'crossOrigin'].forEach(function (prop) {\n        Html5.prototype[prop] = function () {\n            return this.el_[prop];\n        };\n    });\n\n    // Wrap native properties with a setter in this format:\n    // set + toTitleCase(name)\n    // The list is as follows:\n    // setVolume, setSrc, setPoster, setPreload, setPlaybackRate, setDefaultPlaybackRate,\n    // setDisablePictureInPicture, setCrossOrigin\n    [\n        /**\n         * Set the value of `volume` on the media element. `volume` indicates the current\n         * audio level as a percentage in decimal form. This means that 1 is 100%, 0.5 is 50%, and\n         * so on.\n         *\n         * @method Html5#setVolume\n         * @param {number} percentAsDecimal\n         *        The volume percent as a decimal. Valid range is from 0-1.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume}\n         */\n        'volume',\n        /**\n         * Set the value of `src` on the media element. `src` indicates the current\n         * {@link Tech~SourceObject} for the media.\n         *\n         * @method Html5#setSrc\n         * @param {Tech~SourceObject} src\n         *        The source object to set as the current source.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-src}\n         */\n        'src',\n        /**\n         * Set the value of `poster` on the media element. `poster` is the url to\n         * an image file that can/will be shown when no media data is available.\n         *\n         * @method Html5#setPoster\n         * @param {string} poster\n         *        The url to an image that should be used as the `poster` for the media\n         *        element.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-poster}\n         */\n        'poster',\n        /**\n         * Set the value of `preload` on the media element. `preload` indicates\n         * what should download before the media is interacted with. It can have the following\n         * values:\n         * - none: nothing should be downloaded\n         * - metadata: poster and the first few frames of the media may be downloaded to get\n         *   media dimensions and other metadata\n         * - auto: allow the media and metadata for the media to be downloaded before\n         *    interaction\n         *\n         * @method Html5#setPreload\n         * @param {string} preload\n         *         The value of `preload` to set on the media element. Must be 'none', 'metadata',\n         *         or 'auto'.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload}\n         */\n        'preload',\n        /**\n         * Set the value of `playbackRate` on the media element. `playbackRate` indicates\n         * the rate at which the media should play back. Examples:\n         *   - if playbackRate is set to 2, media will play twice as fast.\n         *   - if playbackRate is set to 0.5, media will play half as fast.\n         *\n         * @method Html5#setPlaybackRate\n         * @return {number}\n         *         The value of `playbackRate` from the media element. A number indicating\n         *         the current playback speed of the media, where 1 is normal speed.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}\n         */\n        'playbackRate',\n        /**\n         * Set the value of `defaultPlaybackRate` on the media element. `defaultPlaybackRate` indicates\n         * the rate at which the media should play back upon initial startup. Changing this value\n         * after a video has started will do nothing. Instead you should used {@link Html5#setPlaybackRate}.\n         *\n         * Example Values:\n         *   - if playbackRate is set to 2, media will play twice as fast.\n         *   - if playbackRate is set to 0.5, media will play half as fast.\n         *\n         * @method Html5.prototype.setDefaultPlaybackRate\n         * @return {number}\n         *         The value of `defaultPlaybackRate` from the media element. A number indicating\n         *         the current playback speed of the media, where 1 is normal speed.\n         *\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultplaybackrate}\n         */\n        'defaultPlaybackRate',\n        /**\n         * Prevents the browser from suggesting a Picture-in-Picture context menu\n         * or to request Picture-in-Picture automatically in some cases.\n         *\n         * @method Html5#setDisablePictureInPicture\n         * @param {boolean} value\n         *         The true value will disable Picture-in-Picture mode.\n         *\n         * @see [Spec]{@link https://w3c.github.io/picture-in-picture/#disable-pip}\n         */\n        'disablePictureInPicture',\n        /**\n         * Set the value of `crossOrigin` from the media element. `crossOrigin` indicates\n         * to the browser that should sent the cookies along with the requests for the\n         * different assets/playlists\n         *\n         * @method Html5#setCrossOrigin\n         * @param {string} crossOrigin\n         *         - anonymous indicates that the media should not sent cookies.\n         *         - use-credentials indicates that the media should sent cookies along the requests.\n         *\n         * @see [Spec]{@link https://html.spec.whatwg.org/#attr-media-crossorigin}\n         */\n        'crossOrigin'].forEach(function (prop) {\n        Html5.prototype['set' + toTitleCase$1(prop)] = function (v) {\n            this.el_[prop] = v;\n        };\n    });\n\n    // wrap native functions with a function\n    // The list is as follows:\n    // pause, load, play\n    [\n        /**\n         * A wrapper around the media elements `pause` function. This will call the `HTML5`\n         * media elements `pause` function.\n         *\n         * @method Html5#pause\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-pause}\n         */\n        'pause',\n        /**\n         * A wrapper around the media elements `load` function. This will call the `HTML5`s\n         * media element `load` function.\n         *\n         * @method Html5#load\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-load}\n         */\n        'load',\n        /**\n         * A wrapper around the media elements `play` function. This will call the `HTML5`s\n         * media element `play` function.\n         *\n         * @method Html5#play\n         * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-play}\n         */\n        'play'].forEach(function (prop) {\n        Html5.prototype[prop] = function () {\n            return this.el_[prop]();\n        };\n    });\n    Tech.withSourceHandlers(Html5);\n\n    /**\n     * Native source handler for Html5, simply passes the source to the media element.\n     *\n     * @property {Tech~SourceObject} source\n     *        The source object\n     *\n     * @property {Html5} tech\n     *        The instance of the HTML5 tech.\n     */\n    Html5.nativeSourceHandler = {};\n\n    /**\n     * Check if the media element can play the given mime type.\n     *\n     * @param {string} type\n     *        The mimetype to check\n     *\n     * @return {string}\n     *         'probably', 'maybe', or '' (empty string)\n     */\n    Html5.nativeSourceHandler.canPlayType = function (type) {\n        // IE without MediaPlayer throws an error (#519)\n        try {\n            return Html5.TEST_VID.canPlayType(type);\n        } catch (e) {\n            return '';\n        }\n    };\n\n    /**\n     * Check if the media element can handle a source natively.\n     *\n     * @param {Tech~SourceObject} source\n     *         The source object\n     *\n     * @param {Object} [options]\n     *         Options to be passed to the tech.\n     *\n     * @return {string}\n     *         'probably', 'maybe', or '' (empty string).\n     */\n    Html5.nativeSourceHandler.canHandleSource = function (source, options) {\n        // If a type was provided we should rely on that\n        if (source.type) {\n            return Html5.nativeSourceHandler.canPlayType(source.type);\n\n            // If no type, fall back to checking 'video/[EXTENSION]'\n        } else if (source.src) {\n            const ext = getFileExtension(source.src);\n            return Html5.nativeSourceHandler.canPlayType(`video/${ext}`);\n        }\n        return '';\n    };\n\n    /**\n     * Pass the source to the native media element.\n     *\n     * @param {Tech~SourceObject} source\n     *        The source object\n     *\n     * @param {Html5} tech\n     *        The instance of the Html5 tech\n     *\n     * @param {Object} [options]\n     *        The options to pass to the source\n     */\n    Html5.nativeSourceHandler.handleSource = function (source, tech, options) {\n        tech.setSrc(source.src);\n    };\n\n    /**\n     * A noop for the native dispose function, as cleanup is not needed.\n     */\n    Html5.nativeSourceHandler.dispose = function () {};\n\n    // Register the native source handler\n    Html5.registerSourceHandler(Html5.nativeSourceHandler);\n    Tech.registerTech('Html5', Html5);\n\n    /**\n     * @file player.js\n     */\n\n        // The following tech events are simply re-triggered\n        // on the player when they happen\n    const TECH_EVENTS_RETRIGGER = [\n            /**\n             * Fired while the user agent is downloading media data.\n             *\n             * @event Player#progress\n             * @type {Event}\n             */\n            /**\n             * Retrigger the `progress` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechProgress_\n             * @fires Player#progress\n             * @listens Tech#progress\n             */\n            'progress',\n            /**\n             * Fires when the loading of an audio/video is aborted.\n             *\n             * @event Player#abort\n             * @type {Event}\n             */\n            /**\n             * Retrigger the `abort` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechAbort_\n             * @fires Player#abort\n             * @listens Tech#abort\n             */\n            'abort',\n            /**\n             * Fires when the browser is intentionally not getting media data.\n             *\n             * @event Player#suspend\n             * @type {Event}\n             */\n            /**\n             * Retrigger the `suspend` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechSuspend_\n             * @fires Player#suspend\n             * @listens Tech#suspend\n             */\n            'suspend',\n            /**\n             * Fires when the current playlist is empty.\n             *\n             * @event Player#emptied\n             * @type {Event}\n             */\n            /**\n             * Retrigger the `emptied` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechEmptied_\n             * @fires Player#emptied\n             * @listens Tech#emptied\n             */\n            'emptied',\n            /**\n             * Fires when the browser is trying to get media data, but data is not available.\n             *\n             * @event Player#stalled\n             * @type {Event}\n             */\n            /**\n             * Retrigger the `stalled` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechStalled_\n             * @fires Player#stalled\n             * @listens Tech#stalled\n             */\n            'stalled',\n            /**\n             * Fires when the browser has loaded meta data for the audio/video.\n             *\n             * @event Player#loadedmetadata\n             * @type {Event}\n             */\n            /**\n             * Retrigger the `loadedmetadata` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechLoadedmetadata_\n             * @fires Player#loadedmetadata\n             * @listens Tech#loadedmetadata\n             */\n            'loadedmetadata',\n            /**\n             * Fires when the browser has loaded the current frame of the audio/video.\n             *\n             * @event Player#loadeddata\n             * @type {event}\n             */\n            /**\n             * Retrigger the `loadeddata` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechLoaddeddata_\n             * @fires Player#loadeddata\n             * @listens Tech#loadeddata\n             */\n            'loadeddata',\n            /**\n             * Fires when the current playback position has changed.\n             *\n             * @event Player#timeupdate\n             * @type {event}\n             */\n            /**\n             * Retrigger the `timeupdate` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechTimeUpdate_\n             * @fires Player#timeupdate\n             * @listens Tech#timeupdate\n             */\n            'timeupdate',\n            /**\n             * Fires when the video's intrinsic dimensions change\n             *\n             * @event Player#resize\n             * @type {event}\n             */\n            /**\n             * Retrigger the `resize` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechResize_\n             * @fires Player#resize\n             * @listens Tech#resize\n             */\n            'resize',\n            /**\n             * Fires when the volume has been changed\n             *\n             * @event Player#volumechange\n             * @type {event}\n             */\n            /**\n             * Retrigger the `volumechange` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechVolumechange_\n             * @fires Player#volumechange\n             * @listens Tech#volumechange\n             */\n            'volumechange',\n            /**\n             * Fires when the text track has been changed\n             *\n             * @event Player#texttrackchange\n             * @type {event}\n             */\n            /**\n             * Retrigger the `texttrackchange` event that was triggered by the {@link Tech}.\n             *\n             * @private\n             * @method Player#handleTechTexttrackchange_\n             * @fires Player#texttrackchange\n             * @listens Tech#texttrackchange\n             */\n            'texttrackchange'];\n\n    // events to queue when playback rate is zero\n    // this is a hash for the sole purpose of mapping non-camel-cased event names\n    // to camel-cased function names\n    const TECH_EVENTS_QUEUE = {\n        canplay: 'CanPlay',\n        canplaythrough: 'CanPlayThrough',\n        playing: 'Playing',\n        seeked: 'Seeked'\n    };\n    const BREAKPOINT_ORDER = ['tiny', 'xsmall', 'small', 'medium', 'large', 'xlarge', 'huge'];\n    const BREAKPOINT_CLASSES = {};\n\n    // grep: vjs-layout-tiny\n    // grep: vjs-layout-x-small\n    // grep: vjs-layout-small\n    // grep: vjs-layout-medium\n    // grep: vjs-layout-large\n    // grep: vjs-layout-x-large\n    // grep: vjs-layout-huge\n    BREAKPOINT_ORDER.forEach(k => {\n        const v = k.charAt(0) === 'x' ? `x-${k.substring(1)}` : k;\n        BREAKPOINT_CLASSES[k] = `vjs-layout-${v}`;\n    });\n    const DEFAULT_BREAKPOINTS = {\n        tiny: 210,\n        xsmall: 320,\n        small: 425,\n        medium: 768,\n        large: 1440,\n        xlarge: 2560,\n        huge: Infinity\n    };\n\n    /**\n     * An instance of the `Player` class is created when any of the Video.js setup methods\n     * are used to initialize a video.\n     *\n     * After an instance has been created it can be accessed globally in three ways:\n     * 1. By calling `videojs.getPlayer('example_video_1');`\n     * 2. By calling `videojs('example_video_1');` (not recommended)\n     * 2. By using it directly via `videojs.players.example_video_1;`\n     *\n     * @extends Component\n     * @global\n     */\n    class Player extends Component$1 {\n        /**\n         * Create an instance of this class.\n         *\n         * @param {Element} tag\n         *        The original video DOM element used for configuring options.\n         *\n         * @param {Object} [options]\n         *        Object of option names and values.\n         *\n         * @param {Function} [ready]\n         *        Ready callback function.\n         */\n        constructor(tag, options, ready) {\n            // Make sure tag ID exists\n            // also here.. probably better\n            tag.id = tag.id || options.id || `vjs_video_${newGUID()}`;\n\n            // Set Options\n            // The options argument overrides options set in the video tag\n            // which overrides globally set options.\n            // This latter part coincides with the load order\n            // (tag must exist before Player)\n            options = Object.assign(Player.getTagSettings(tag), options);\n\n            // Delay the initialization of children because we need to set up\n            // player properties first, and can't use `this` before `super()`\n            options.initChildren = false;\n\n            // Same with creating the element\n            options.createEl = false;\n\n            // don't auto mixin the evented mixin\n            options.evented = false;\n\n            // we don't want the player to report touch activity on itself\n            // see enableTouchActivity in Component\n            options.reportTouchActivity = false;\n\n            // If language is not set, get the closest lang attribute\n            if (!options.language) {\n                const closest = tag.closest('[lang]');\n                if (closest) {\n                    options.language = closest.getAttribute('lang');\n                }\n            }\n\n            // Run base component initializing with new options\n            super(null, options, ready);\n\n            // Create bound methods for document listeners.\n            this.boundDocumentFullscreenChange_ = e => this.documentFullscreenChange_(e);\n            this.boundFullWindowOnEscKey_ = e => this.fullWindowOnEscKey(e);\n            this.boundUpdateStyleEl_ = e => this.updateStyleEl_(e);\n            this.boundApplyInitTime_ = e => this.applyInitTime_(e);\n            this.boundUpdateCurrentBreakpoint_ = e => this.updateCurrentBreakpoint_(e);\n            this.boundHandleTechClick_ = e => this.handleTechClick_(e);\n            this.boundHandleTechDoubleClick_ = e => this.handleTechDoubleClick_(e);\n            this.boundHandleTechTouchStart_ = e => this.handleTechTouchStart_(e);\n            this.boundHandleTechTouchMove_ = e => this.handleTechTouchMove_(e);\n            this.boundHandleTechTouchEnd_ = e => this.handleTechTouchEnd_(e);\n            this.boundHandleTechTap_ = e => this.handleTechTap_(e);\n\n            // default isFullscreen_ to false\n            this.isFullscreen_ = false;\n\n            // create logger\n            this.log = createLogger(this.id_);\n\n            // Hold our own reference to fullscreen api so it can be mocked in tests\n            this.fsApi_ = FullscreenApi;\n\n            // Tracks when a tech changes the poster\n            this.isPosterFromTech_ = false;\n\n            // Holds callback info that gets queued when playback rate is zero\n            // and a seek is happening\n            this.queuedCallbacks_ = [];\n\n            // Turn off API access because we're loading a new tech that might load asynchronously\n            this.isReady_ = false;\n\n            // Init state hasStarted_\n            this.hasStarted_ = false;\n\n            // Init state userActive_\n            this.userActive_ = false;\n\n            // Init debugEnabled_\n            this.debugEnabled_ = false;\n\n            // Init state audioOnlyMode_\n            this.audioOnlyMode_ = false;\n\n            // Init state audioPosterMode_\n            this.audioPosterMode_ = false;\n\n            // Init state audioOnlyCache_\n            this.audioOnlyCache_ = {\n                playerHeight: null,\n                hiddenChildren: []\n            };\n\n            // if the global option object was accidentally blown away by\n            // someone, bail early with an informative error\n            if (!this.options_ || !this.options_.techOrder || !this.options_.techOrder.length) {\n                throw new Error('No techOrder specified. Did you overwrite ' + 'videojs.options instead of just changing the ' + 'properties you want to override?');\n            }\n\n            // Store the original tag used to set options\n            this.tag = tag;\n\n            // Store the tag attributes used to restore html5 element\n            this.tagAttributes = tag && getAttributes(tag);\n\n            // Update current language\n            this.language(this.options_.language);\n\n            // Update Supported Languages\n            if (options.languages) {\n                // Normalise player option languages to lowercase\n                const languagesToLower = {};\n                Object.getOwnPropertyNames(options.languages).forEach(function (name) {\n                    languagesToLower[name.toLowerCase()] = options.languages[name];\n                });\n                this.languages_ = languagesToLower;\n            } else {\n                this.languages_ = Player.prototype.options_.languages;\n            }\n            this.resetCache_();\n\n            // Set poster\n            /** @type string */\n            this.poster_ = options.poster || '';\n\n            // Set controls\n            /** @type {boolean} */\n            this.controls_ = !!options.controls;\n\n            // Original tag settings stored in options\n            // now remove immediately so native controls don't flash.\n            // May be turned back on by HTML5 tech if nativeControlsForTouch is true\n            tag.controls = false;\n            tag.removeAttribute('controls');\n            this.changingSrc_ = false;\n            this.playCallbacks_ = [];\n            this.playTerminatedQueue_ = [];\n\n            // the attribute overrides the option\n            if (tag.hasAttribute('autoplay')) {\n                this.autoplay(true);\n            } else {\n                // otherwise use the setter to validate and\n                // set the correct value.\n                this.autoplay(this.options_.autoplay);\n            }\n\n            // check plugins\n            if (options.plugins) {\n                Object.keys(options.plugins).forEach(name => {\n                    if (typeof this[name] !== 'function') {\n                        throw new Error(`plugin \"${name}\" does not exist`);\n                    }\n                });\n            }\n\n            /*\n       * Store the internal state of scrubbing\n       *\n       * @private\n       * @return {Boolean} True if the user is scrubbing\n       */\n            this.scrubbing_ = false;\n            this.el_ = this.createEl();\n\n            // Make this an evented object and use `el_` as its event bus.\n            evented(this, {\n                eventBusKey: 'el_'\n            });\n\n            // listen to document and player fullscreenchange handlers so we receive those events\n            // before a user can receive them so we can update isFullscreen appropriately.\n            // make sure that we listen to fullscreenchange events before everything else to make sure that\n            // our isFullscreen method is updated properly for internal components as well as external.\n            if (this.fsApi_.requestFullscreen) {\n                on(document, this.fsApi_.fullscreenchange, this.boundDocumentFullscreenChange_);\n                this.on(this.fsApi_.fullscreenchange, this.boundDocumentFullscreenChange_);\n            }\n            if (this.fluid_) {\n                this.on(['playerreset', 'resize'], this.boundUpdateStyleEl_);\n            }\n            // We also want to pass the original player options to each component and plugin\n            // as well so they don't need to reach back into the player for options later.\n            // We also need to do another copy of this.options_ so we don't end up with\n            // an infinite loop.\n            const playerOptionsCopy = merge$2(this.options_);\n\n            // Load plugins\n            if (options.plugins) {\n                Object.keys(options.plugins).forEach(name => {\n                    this[name](options.plugins[name]);\n                });\n            }\n\n            // Enable debug mode to fire debugon event for all plugins.\n            if (options.debug) {\n                this.debug(true);\n            }\n            this.options_.playerOptions = playerOptionsCopy;\n            this.middleware_ = [];\n            this.playbackRates(options.playbackRates);\n            if (options.experimentalSvgIcons) {\n                // Add SVG Sprite to the DOM\n                const parser = new window.DOMParser();\n                const parsedSVG = parser.parseFromString(icons, 'image/svg+xml');\n                const errorNode = parsedSVG.querySelector('parsererror');\n                if (errorNode) {\n                    log$1.warn('Failed to load SVG Icons. Falling back to Font Icons.');\n                    this.options_.experimentalSvgIcons = null;\n                } else {\n                    const sprite = parsedSVG.documentElement;\n                    sprite.style.display = 'none';\n                    this.el_.appendChild(sprite);\n                    this.addClass('vjs-svg-icons-enabled');\n                }\n            }\n            this.initChildren();\n\n            // Set isAudio based on whether or not an audio tag was used\n            this.isAudio(tag.nodeName.toLowerCase() === 'audio');\n\n            // Update controls className. Can't do this when the controls are initially\n            // set because the element doesn't exist yet.\n            if (this.controls()) {\n                this.addClass('vjs-controls-enabled');\n            } else {\n                this.addClass('vjs-controls-disabled');\n            }\n\n            // Set ARIA label and region role depending on player type\n            this.el_.setAttribute('role', 'region');\n            if (this.isAudio()) {\n                this.el_.setAttribute('aria-label', this.localize('Audio Player'));\n            } else {\n                this.el_.setAttribute('aria-label', this.localize('Video Player'));\n            }\n            if (this.isAudio()) {\n                this.addClass('vjs-audio');\n            }\n\n            // TODO: Make this smarter. Toggle user state between touching/mousing\n            // using events, since devices can have both touch and mouse events.\n            // TODO: Make this check be performed again when the window switches between monitors\n            // (See https://github.com/videojs/video.js/issues/5683)\n            if (TOUCH_ENABLED) {\n                this.addClass('vjs-touch-enabled');\n            }\n\n            // iOS Safari has broken hover handling\n            if (!IS_IOS) {\n                this.addClass('vjs-workinghover');\n            }\n\n            // Make player easily findable by ID\n            Player.players[this.id_] = this;\n\n            // Add a major version class to aid css in plugins\n            const majorVersion = version$5.split('.')[0];\n            this.addClass(`vjs-v${majorVersion}`);\n\n            // When the player is first initialized, trigger activity so components\n            // like the control bar show themselves if needed\n            this.userActive(true);\n            this.reportUserActivity();\n            this.one('play', e => this.listenForUserActivity_(e));\n            this.on('keydown', e => this.handleKeyDown(e));\n            this.on('languagechange', e => this.handleLanguagechange(e));\n            this.breakpoints(this.options_.breakpoints);\n            this.responsive(this.options_.responsive);\n\n            // Calling both the audio mode methods after the player is fully\n            // setup to be able to listen to the events triggered by them\n            this.on('ready', () => {\n                // Calling the audioPosterMode method first so that\n                // the audioOnlyMode can take precedence when both options are set to true\n                this.audioPosterMode(this.options_.audioPosterMode);\n                this.audioOnlyMode(this.options_.audioOnlyMode);\n            });\n        }\n\n        /**\n         * Destroys the video player and does any necessary cleanup.\n         *\n         * This is especially helpful if you are dynamically adding and removing videos\n         * to/from the DOM.\n         *\n         * @fires Player#dispose\n         */\n        dispose() {\n            /**\n             * Called when the player is being disposed of.\n             *\n             * @event Player#dispose\n             * @type {Event}\n             */\n            this.trigger('dispose');\n            // prevent dispose from being called twice\n            this.off('dispose');\n\n            // Make sure all player-specific document listeners are unbound. This is\n            off(document, this.fsApi_.fullscreenchange, this.boundDocumentFullscreenChange_);\n            off(document, 'keydown', this.boundFullWindowOnEscKey_);\n            if (this.styleEl_ && this.styleEl_.parentNode) {\n                this.styleEl_.parentNode.removeChild(this.styleEl_);\n                this.styleEl_ = null;\n            }\n\n            // Kill reference to this player\n            Player.players[this.id_] = null;\n            if (this.tag && this.tag.player) {\n                this.tag.player = null;\n            }\n            if (this.el_ && this.el_.player) {\n                this.el_.player = null;\n            }\n            if (this.tech_) {\n                this.tech_.dispose();\n                this.isPosterFromTech_ = false;\n                this.poster_ = '';\n            }\n            if (this.playerElIngest_) {\n                this.playerElIngest_ = null;\n            }\n            if (this.tag) {\n                this.tag = null;\n            }\n            clearCacheForPlayer(this);\n\n            // remove all event handlers for track lists\n            // all tracks and track listeners are removed on\n            // tech dispose\n            ALL.names.forEach(name => {\n                const props = ALL[name];\n                const list = this[props.getterName]();\n\n                // if it is not a native list\n                // we have to manually remove event listeners\n                if (list && list.off) {\n                    list.off();\n                }\n            });\n\n            // the actual .el_ is removed here, or replaced if\n            super.dispose({\n                restoreEl: this.options_.restoreEl\n            });\n        }\n\n        /**\n         * Create the `Player`'s DOM element.\n         *\n         * @return {Element}\n         *         The DOM element that gets created.\n         */\n        createEl() {\n            let tag = this.tag;\n            let el;\n            let playerElIngest = this.playerElIngest_ = tag.parentNode && tag.parentNode.hasAttribute && tag.parentNode.hasAttribute('data-vjs-player');\n            const divEmbed = this.tag.tagName.toLowerCase() === 'video-js';\n            if (playerElIngest) {\n                el = this.el_ = tag.parentNode;\n            } else if (!divEmbed) {\n                el = this.el_ = super.createEl('div');\n            }\n\n            // Copy over all the attributes from the tag, including ID and class\n            // ID will now reference player box, not the video tag\n            const attrs = getAttributes(tag);\n            if (divEmbed) {\n                el = this.el_ = tag;\n                tag = this.tag = document.createElement('video');\n                while (el.children.length) {\n                    tag.appendChild(el.firstChild);\n                }\n                if (!hasClass(el, 'video-js')) {\n                    addClass(el, 'video-js');\n                }\n                el.appendChild(tag);\n                playerElIngest = this.playerElIngest_ = el;\n                // move properties over from our custom `video-js` element\n                // to our new `video` element. This will move things like\n                // `src` or `controls` that were set via js before the player\n                // was initialized.\n                Object.keys(el).forEach(k => {\n                    try {\n                        tag[k] = el[k];\n                    } catch (e) {\n                        // we got a a property like outerHTML which we can't actually copy, ignore it\n                    }\n                });\n            }\n\n            // set tabindex to -1 to remove the video element from the focus order\n            tag.setAttribute('tabindex', '-1');\n            attrs.tabindex = '-1';\n\n            // Workaround for #4583 on Chrome (on Windows) with JAWS.\n            // See https://github.com/FreedomScientific/VFO-standards-support/issues/78\n            // Note that we can't detect if JAWS is being used, but this ARIA attribute\n            // doesn't change behavior of Chrome if JAWS is not being used\n            if (IS_CHROME && IS_WINDOWS) {\n                tag.setAttribute('role', 'application');\n                attrs.role = 'application';\n            }\n\n            // Remove width/height attrs from tag so CSS can make it 100% width/height\n            tag.removeAttribute('width');\n            tag.removeAttribute('height');\n            if ('width' in attrs) {\n                delete attrs.width;\n            }\n            if ('height' in attrs) {\n                delete attrs.height;\n            }\n            Object.getOwnPropertyNames(attrs).forEach(function (attr) {\n                // don't copy over the class attribute to the player element when we're in a div embed\n                // the class is already set up properly in the divEmbed case\n                // and we want to make sure that the `video-js` class doesn't get lost\n                if (!(divEmbed && attr === 'class')) {\n                    el.setAttribute(attr, attrs[attr]);\n                }\n                if (divEmbed) {\n                    tag.setAttribute(attr, attrs[attr]);\n                }\n            });\n\n            // Update tag id/class for use as HTML5 playback tech\n            // Might think we should do this after embedding in container so .vjs-tech class\n            // doesn't flash 100% width/height, but class only applies with .video-js parent\n            tag.playerId = tag.id;\n            tag.id += '_html5_api';\n            tag.className = 'vjs-tech';\n\n            // Make player findable on elements\n            tag.player = el.player = this;\n            // Default state of video is paused\n            this.addClass('vjs-paused');\n\n            // Add a style element in the player that we'll use to set the width/height\n            // of the player in a way that's still overridable by CSS, just like the\n            // video element\n            if (window.VIDEOJS_NO_DYNAMIC_STYLE !== true) {\n                this.styleEl_ = createStyleElement('vjs-styles-dimensions');\n                const defaultsStyleEl = $('.vjs-styles-defaults');\n                const head = $('head');\n                head.insertBefore(this.styleEl_, defaultsStyleEl ? defaultsStyleEl.nextSibling : head.firstChild);\n            }\n            this.fill_ = false;\n            this.fluid_ = false;\n\n            // Pass in the width/height/aspectRatio options which will update the style el\n            this.width(this.options_.width);\n            this.height(this.options_.height);\n            this.fill(this.options_.fill);\n            this.fluid(this.options_.fluid);\n            this.aspectRatio(this.options_.aspectRatio);\n            // support both crossOrigin and crossorigin to reduce confusion and issues around the name\n            this.crossOrigin(this.options_.crossOrigin || this.options_.crossorigin);\n\n            // Hide any links within the video/audio tag,\n            // because IE doesn't hide them completely from screen readers.\n            const links = tag.getElementsByTagName('a');\n            for (let i = 0; i < links.length; i++) {\n                const linkEl = links.item(i);\n                addClass(linkEl, 'vjs-hidden');\n                linkEl.setAttribute('hidden', 'hidden');\n            }\n\n            // insertElFirst seems to cause the networkState to flicker from 3 to 2, so\n            // keep track of the original for later so we can know if the source originally failed\n            tag.initNetworkState_ = tag.networkState;\n\n            // Wrap video tag in div (el/box) container\n            if (tag.parentNode && !playerElIngest) {\n                tag.parentNode.insertBefore(el, tag);\n            }\n\n            // insert the tag as the first child of the player element\n            // then manually add it to the children array so that this.addChild\n            // will work properly for other components\n            //\n            // Breaks iPhone, fixed in HTML5 setup.\n            prependTo(tag, el);\n            this.children_.unshift(tag);\n\n            // Set lang attr on player to ensure CSS :lang() in consistent with player\n            // if it's been set to something different to the doc\n            this.el_.setAttribute('lang', this.language_);\n            this.el_.setAttribute('translate', 'no');\n            this.el_ = el;\n            return el;\n        }\n\n        /**\n         * Get or set the `Player`'s crossOrigin option. For the HTML5 player, this\n         * sets the `crossOrigin` property on the `<video>` tag to control the CORS\n         * behavior.\n         *\n         * @see [Video Element Attributes]{@link https://developer.mozilla.org/en-US/docs/Web/HTML/Element/video#attr-crossorigin}\n         *\n         * @param {string|null} [value]\n         *        The value to set the `Player`'s crossOrigin to. If an argument is\n         *        given, must be one of `'anonymous'` or `'use-credentials'`, or 'null'.\n         *\n         * @return {string|null|undefined}\n         *         - The current crossOrigin value of the `Player` when getting.\n         *         - undefined when setting\n         */\n        crossOrigin(value) {\n            // `null` can be set to unset a value\n            if (typeof value === 'undefined') {\n                return this.techGet_('crossOrigin');\n            }\n            if (value !== null && value !== 'anonymous' && value !== 'use-credentials') {\n                log$1.warn(`crossOrigin must be null,  \"anonymous\" or \"use-credentials\", given \"${value}\"`);\n                return;\n            }\n            this.techCall_('setCrossOrigin', value);\n            if (this.posterImage) {\n                this.posterImage.crossOrigin(value);\n            }\n            return;\n        }\n\n        /**\n         * A getter/setter for the `Player`'s width. Returns the player's configured value.\n         * To get the current width use `currentWidth()`.\n         *\n         * @param {number|string} [value]\n         *        CSS value to set the `Player`'s width to.\n         *\n         * @return {number|undefined}\n         *         - The current width of the `Player` when getting.\n         *         - Nothing when setting\n         */\n        width(value) {\n            return this.dimension('width', value);\n        }\n\n        /**\n         * A getter/setter for the `Player`'s height. Returns the player's configured value.\n         * To get the current height use `currentheight()`.\n         *\n         * @param {number|string} [value]\n         *        CSS value to set the `Player`'s height to.\n         *\n         * @return {number|undefined}\n         *         - The current height of the `Player` when getting.\n         *         - Nothing when setting\n         */\n        height(value) {\n            return this.dimension('height', value);\n        }\n\n        /**\n         * A getter/setter for the `Player`'s width & height.\n         *\n         * @param {string} dimension\n         *        This string can be:\n         *        - 'width'\n         *        - 'height'\n         *\n         * @param {number|string} [value]\n         *        Value for dimension specified in the first argument.\n         *\n         * @return {number}\n         *         The dimension arguments value when getting (width/height).\n         */\n        dimension(dimension, value) {\n            const privDimension = dimension + '_';\n            if (value === undefined) {\n                return this[privDimension] || 0;\n            }\n            if (value === '' || value === 'auto') {\n                // If an empty string is given, reset the dimension to be automatic\n                this[privDimension] = undefined;\n                this.updateStyleEl_();\n                return;\n            }\n            const parsedVal = parseFloat(value);\n            if (isNaN(parsedVal)) {\n                log$1.error(`Improper value \"${value}\" supplied for for ${dimension}`);\n                return;\n            }\n            this[privDimension] = parsedVal;\n            this.updateStyleEl_();\n        }\n\n        /**\n         * A getter/setter/toggler for the vjs-fluid `className` on the `Player`.\n         *\n         * Turning this on will turn off fill mode.\n         *\n         * @param {boolean} [bool]\n         *        - A value of true adds the class.\n         *        - A value of false removes the class.\n         *        - No value will be a getter.\n         *\n         * @return {boolean|undefined}\n         *         - The value of fluid when getting.\n         *         - `undefined` when setting.\n         */\n        fluid(bool) {\n            if (bool === undefined) {\n                return !!this.fluid_;\n            }\n            this.fluid_ = !!bool;\n            if (isEvented(this)) {\n                this.off(['playerreset', 'resize'], this.boundUpdateStyleEl_);\n            }\n            if (bool) {\n                this.addClass('vjs-fluid');\n                this.fill(false);\n                addEventedCallback(this, () => {\n                    this.on(['playerreset', 'resize'], this.boundUpdateStyleEl_);\n                });\n            } else {\n                this.removeClass('vjs-fluid');\n            }\n            this.updateStyleEl_();\n        }\n\n        /**\n         * A getter/setter/toggler for the vjs-fill `className` on the `Player`.\n         *\n         * Turning this on will turn off fluid mode.\n         *\n         * @param {boolean} [bool]\n         *        - A value of true adds the class.\n         *        - A value of false removes the class.\n         *        - No value will be a getter.\n         *\n         * @return {boolean|undefined}\n         *         - The value of fluid when getting.\n         *         - `undefined` when setting.\n         */\n        fill(bool) {\n            if (bool === undefined) {\n                return !!this.fill_;\n            }\n            this.fill_ = !!bool;\n            if (bool) {\n                this.addClass('vjs-fill');\n                this.fluid(false);\n            } else {\n                this.removeClass('vjs-fill');\n            }\n        }\n\n        /**\n         * Get/Set the aspect ratio\n         *\n         * @param {string} [ratio]\n         *        Aspect ratio for player\n         *\n         * @return {string|undefined}\n         *         returns the current aspect ratio when getting\n         */\n\n        /**\n         * A getter/setter for the `Player`'s aspect ratio.\n         *\n         * @param {string} [ratio]\n         *        The value to set the `Player`'s aspect ratio to.\n         *\n         * @return {string|undefined}\n         *         - The current aspect ratio of the `Player` when getting.\n         *         - undefined when setting\n         */\n        aspectRatio(ratio) {\n            if (ratio === undefined) {\n                return this.aspectRatio_;\n            }\n\n            // Check for width:height format\n            if (!/^\\d+\\:\\d+$/.test(ratio)) {\n                throw new Error('Improper value supplied for aspect ratio. The format should be width:height, for example 16:9.');\n            }\n            this.aspectRatio_ = ratio;\n\n            // We're assuming if you set an aspect ratio you want fluid mode,\n            // because in fixed mode you could calculate width and height yourself.\n            this.fluid(true);\n            this.updateStyleEl_();\n        }\n\n        /**\n         * Update styles of the `Player` element (height, width and aspect ratio).\n         *\n         * @private\n         * @listens Tech#loadedmetadata\n         */\n        updateStyleEl_() {\n            if (window.VIDEOJS_NO_DYNAMIC_STYLE === true) {\n                const width = typeof this.width_ === 'number' ? this.width_ : this.options_.width;\n                const height = typeof this.height_ === 'number' ? this.height_ : this.options_.height;\n                const techEl = this.tech_ && this.tech_.el();\n                if (techEl) {\n                    if (width >= 0) {\n                        techEl.width = width;\n                    }\n                    if (height >= 0) {\n                        techEl.height = height;\n                    }\n                }\n                return;\n            }\n            let width;\n            let height;\n            let aspectRatio;\n            let idClass;\n\n            // The aspect ratio is either used directly or to calculate width and height.\n            if (this.aspectRatio_ !== undefined && this.aspectRatio_ !== 'auto') {\n                // Use any aspectRatio that's been specifically set\n                aspectRatio = this.aspectRatio_;\n            } else if (this.videoWidth() > 0) {\n                // Otherwise try to get the aspect ratio from the video metadata\n                aspectRatio = this.videoWidth() + ':' + this.videoHeight();\n            } else {\n                // Or use a default. The video element's is 2:1, but 16:9 is more common.\n                aspectRatio = '16:9';\n            }\n\n            // Get the ratio as a decimal we can use to calculate dimensions\n            const ratioParts = aspectRatio.split(':');\n            const ratioMultiplier = ratioParts[1] / ratioParts[0];\n            if (this.width_ !== undefined) {\n                // Use any width that's been specifically set\n                width = this.width_;\n            } else if (this.height_ !== undefined) {\n                // Or calculate the width from the aspect ratio if a height has been set\n                width = this.height_ / ratioMultiplier;\n            } else {\n                // Or use the video's metadata, or use the video el's default of 300\n                width = this.videoWidth() || 300;\n            }\n            if (this.height_ !== undefined) {\n                // Use any height that's been specifically set\n                height = this.height_;\n            } else {\n                // Otherwise calculate the height from the ratio and the width\n                height = width * ratioMultiplier;\n            }\n\n            // Ensure the CSS class is valid by starting with an alpha character\n            if (/^[^a-zA-Z]/.test(this.id())) {\n                idClass = 'dimensions-' + this.id();\n            } else {\n                idClass = this.id() + '-dimensions';\n            }\n\n            // Ensure the right class is still on the player for the style element\n            this.addClass(idClass);\n            setTextContent(this.styleEl_, `\n      .${idClass} {\n        width: ${width}px;\n        height: ${height}px;\n      }\n\n      .${idClass}.vjs-fluid:not(.vjs-audio-only-mode) {\n        padding-top: ${ratioMultiplier * 100}%;\n      }\n    `);\n        }\n\n        /**\n         * Load/Create an instance of playback {@link Tech} including element\n         * and API methods. Then append the `Tech` element in `Player` as a child.\n         *\n         * @param {string} techName\n         *        name of the playback technology\n         *\n         * @param {string} source\n         *        video source\n         *\n         * @private\n         */\n        loadTech_(techName, source) {\n            // Pause and remove current playback technology\n            if (this.tech_) {\n                this.unloadTech_();\n            }\n            const titleTechName = toTitleCase$1(techName);\n            const camelTechName = techName.charAt(0).toLowerCase() + techName.slice(1);\n\n            // get rid of the HTML5 video tag as soon as we are using another tech\n            if (titleTechName !== 'Html5' && this.tag) {\n                Tech.getTech('Html5').disposeMediaElement(this.tag);\n                this.tag.player = null;\n                this.tag = null;\n            }\n            this.techName_ = titleTechName;\n\n            // Turn off API access because we're loading a new tech that might load asynchronously\n            this.isReady_ = false;\n            let autoplay = this.autoplay();\n\n            // if autoplay is a string (or `true` with normalizeAutoplay: true) we pass false to the tech\n            // because the player is going to handle autoplay on `loadstart`\n            if (typeof this.autoplay() === 'string' || this.autoplay() === true && this.options_.normalizeAutoplay) {\n                autoplay = false;\n            }\n\n            // Grab tech-specific options from player options and add source and parent element to use.\n            const techOptions = {\n                source,\n                autoplay,\n                'nativeControlsForTouch': this.options_.nativeControlsForTouch,\n                'playerId': this.id(),\n                'techId': `${this.id()}_${camelTechName}_api`,\n                'playsinline': this.options_.playsinline,\n                'preload': this.options_.preload,\n                'loop': this.options_.loop,\n                'disablePictureInPicture': this.options_.disablePictureInPicture,\n                'muted': this.options_.muted,\n                'poster': this.poster(),\n                'language': this.language(),\n                'playerElIngest': this.playerElIngest_ || false,\n                'vtt.js': this.options_['vtt.js'],\n                'canOverridePoster': !!this.options_.techCanOverridePoster,\n                'enableSourceset': this.options_.enableSourceset\n            };\n            ALL.names.forEach(name => {\n                const props = ALL[name];\n                techOptions[props.getterName] = this[props.privateName];\n            });\n            Object.assign(techOptions, this.options_[titleTechName]);\n            Object.assign(techOptions, this.options_[camelTechName]);\n            Object.assign(techOptions, this.options_[techName.toLowerCase()]);\n            if (this.tag) {\n                techOptions.tag = this.tag;\n            }\n            if (source && source.src === this.cache_.src && this.cache_.currentTime > 0) {\n                techOptions.startTime = this.cache_.currentTime;\n            }\n\n            // Initialize tech instance\n            const TechClass = Tech.getTech(techName);\n            if (!TechClass) {\n                throw new Error(`No Tech named '${titleTechName}' exists! '${titleTechName}' should be registered using videojs.registerTech()'`);\n            }\n            this.tech_ = new TechClass(techOptions);\n\n            // player.triggerReady is always async, so don't need this to be async\n            this.tech_.ready(bind_(this, this.handleTechReady_), true);\n            textTrackConverter.jsonToTextTracks(this.textTracksJson_ || [], this.tech_);\n\n            // Listen to all HTML5-defined events and trigger them on the player\n            TECH_EVENTS_RETRIGGER.forEach(event => {\n                this.on(this.tech_, event, e => this[`handleTech${toTitleCase$1(event)}_`](e));\n            });\n            Object.keys(TECH_EVENTS_QUEUE).forEach(event => {\n                this.on(this.tech_, event, eventObj => {\n                    if (this.tech_.playbackRate() === 0 && this.tech_.seeking()) {\n                        this.queuedCallbacks_.push({\n                            callback: this[`handleTech${TECH_EVENTS_QUEUE[event]}_`].bind(this),\n                            event: eventObj\n                        });\n                        return;\n                    }\n                    this[`handleTech${TECH_EVENTS_QUEUE[event]}_`](eventObj);\n                });\n            });\n            this.on(this.tech_, 'loadstart', e => this.handleTechLoadStart_(e));\n            this.on(this.tech_, 'sourceset', e => this.handleTechSourceset_(e));\n            this.on(this.tech_, 'waiting', e => this.handleTechWaiting_(e));\n            this.on(this.tech_, 'ended', e => this.handleTechEnded_(e));\n            this.on(this.tech_, 'seeking', e => this.handleTechSeeking_(e));\n            this.on(this.tech_, 'play', e => this.handleTechPlay_(e));\n            this.on(this.tech_, 'pause', e => this.handleTechPause_(e));\n            this.on(this.tech_, 'durationchange', e => this.handleTechDurationChange_(e));\n            this.on(this.tech_, 'fullscreenchange', (e, data) => this.handleTechFullscreenChange_(e, data));\n            this.on(this.tech_, 'fullscreenerror', (e, err) => this.handleTechFullscreenError_(e, err));\n            this.on(this.tech_, 'enterpictureinpicture', e => this.handleTechEnterPictureInPicture_(e));\n            this.on(this.tech_, 'leavepictureinpicture', e => this.handleTechLeavePictureInPicture_(e));\n            this.on(this.tech_, 'error', e => this.handleTechError_(e));\n            this.on(this.tech_, 'posterchange', e => this.handleTechPosterChange_(e));\n            this.on(this.tech_, 'textdata', e => this.handleTechTextData_(e));\n            this.on(this.tech_, 'ratechange', e => this.handleTechRateChange_(e));\n            this.on(this.tech_, 'loadedmetadata', this.boundUpdateStyleEl_);\n            this.usingNativeControls(this.techGet_('controls'));\n            if (this.controls() && !this.usingNativeControls()) {\n                this.addTechControlsListeners_();\n            }\n\n            // Add the tech element in the DOM if it was not already there\n            // Make sure to not insert the original video element if using Html5\n            if (this.tech_.el().parentNode !== this.el() && (titleTechName !== 'Html5' || !this.tag)) {\n                prependTo(this.tech_.el(), this.el());\n            }\n\n            // Get rid of the original video tag reference after the first tech is loaded\n            if (this.tag) {\n                this.tag.player = null;\n                this.tag = null;\n            }\n        }\n\n        /**\n         * Unload and dispose of the current playback {@link Tech}.\n         *\n         * @private\n         */\n        unloadTech_() {\n            // Save the current text tracks so that we can reuse the same text tracks with the next tech\n            ALL.names.forEach(name => {\n                const props = ALL[name];\n                this[props.privateName] = this[props.getterName]();\n            });\n            this.textTracksJson_ = textTrackConverter.textTracksToJson(this.tech_);\n            this.isReady_ = false;\n            this.tech_.dispose();\n            this.tech_ = false;\n            if (this.isPosterFromTech_) {\n                this.poster_ = '';\n                this.trigger('posterchange');\n            }\n            this.isPosterFromTech_ = false;\n        }\n\n        /**\n         * Return a reference to the current {@link Tech}.\n         * It will print a warning by default about the danger of using the tech directly\n         * but any argument that is passed in will silence the warning.\n         *\n         * @param {*} [safety]\n         *        Anything passed in to silence the warning\n         *\n         * @return {Tech}\n         *         The Tech\n         */\n        tech(safety) {\n            if (safety === undefined) {\n                log$1.warn('Using the tech directly can be dangerous. I hope you know what you\\'re doing.\\n' + 'See https://github.com/videojs/video.js/issues/2617 for more info.\\n');\n            }\n            return this.tech_;\n        }\n\n        /**\n         * An object that contains Video.js version.\n         *\n         * @typedef {Object} PlayerVersion\n         *\n         * @property {string} 'video.js' - Video.js version\n         */\n\n        /**\n         * Returns an object with Video.js version.\n         *\n         * @return {PlayerVersion}\n         *          An object with Video.js version.\n         */\n        version() {\n            return {\n                'video.js': version$5\n            };\n        }\n\n        /**\n         * Set up click and touch listeners for the playback element\n         *\n         * - On desktops: a click on the video itself will toggle playback\n         * - On mobile devices: a click on the video toggles controls\n         *   which is done by toggling the user state between active and\n         *   inactive\n         * - A tap can signal that a user has become active or has become inactive\n         *   e.g. a quick tap on an iPhone movie should reveal the controls. Another\n         *   quick tap should hide them again (signaling the user is in an inactive\n         *   viewing state)\n         * - In addition to this, we still want the user to be considered inactive after\n         *   a few seconds of inactivity.\n         *\n         * > Note: the only part of iOS interaction we can't mimic with this setup\n         * is a touch and hold on the video element counting as activity in order to\n         * keep the controls showing, but that shouldn't be an issue. A touch and hold\n         * on any controls will still keep the user active\n         *\n         * @private\n         */\n        addTechControlsListeners_() {\n            // Make sure to remove all the previous listeners in case we are called multiple times.\n            this.removeTechControlsListeners_();\n            this.on(this.tech_, 'click', this.boundHandleTechClick_);\n            this.on(this.tech_, 'dblclick', this.boundHandleTechDoubleClick_);\n\n            // If the controls were hidden we don't want that to change without a tap event\n            // so we'll check if the controls were already showing before reporting user\n            // activity\n            this.on(this.tech_, 'touchstart', this.boundHandleTechTouchStart_);\n            this.on(this.tech_, 'touchmove', this.boundHandleTechTouchMove_);\n            this.on(this.tech_, 'touchend', this.boundHandleTechTouchEnd_);\n\n            // The tap listener needs to come after the touchend listener because the tap\n            // listener cancels out any reportedUserActivity when setting userActive(false)\n            this.on(this.tech_, 'tap', this.boundHandleTechTap_);\n        }\n\n        /**\n         * Remove the listeners used for click and tap controls. This is needed for\n         * toggling to controls disabled, where a tap/touch should do nothing.\n         *\n         * @private\n         */\n        removeTechControlsListeners_() {\n            // We don't want to just use `this.off()` because there might be other needed\n            // listeners added by techs that extend this.\n            this.off(this.tech_, 'tap', this.boundHandleTechTap_);\n            this.off(this.tech_, 'touchstart', this.boundHandleTechTouchStart_);\n            this.off(this.tech_, 'touchmove', this.boundHandleTechTouchMove_);\n            this.off(this.tech_, 'touchend', this.boundHandleTechTouchEnd_);\n            this.off(this.tech_, 'click', this.boundHandleTechClick_);\n            this.off(this.tech_, 'dblclick', this.boundHandleTechDoubleClick_);\n        }\n\n        /**\n         * Player waits for the tech to be ready\n         *\n         * @private\n         */\n        handleTechReady_() {\n            this.triggerReady();\n\n            // Keep the same volume as before\n            if (this.cache_.volume) {\n                this.techCall_('setVolume', this.cache_.volume);\n            }\n\n            // Look if the tech found a higher resolution poster while loading\n            this.handleTechPosterChange_();\n\n            // Update the duration if available\n            this.handleTechDurationChange_();\n        }\n\n        /**\n         * Retrigger the `loadstart` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#loadstart\n         * @listens Tech#loadstart\n         * @private\n         */\n        handleTechLoadStart_() {\n            // TODO: Update to use `emptied` event instead. See #1277.\n\n            this.removeClass('vjs-ended', 'vjs-seeking');\n\n            // reset the error state\n            this.error(null);\n\n            // Update the duration\n            this.handleTechDurationChange_();\n            if (!this.paused()) {\n                /**\n                 * Fired when the user agent begins looking for media data\n                 *\n                 * @event Player#loadstart\n                 * @type {Event}\n                 */\n                this.trigger('loadstart');\n            } else {\n                // reset the hasStarted state\n                this.hasStarted(false);\n                this.trigger('loadstart');\n            }\n\n            // autoplay happens after loadstart for the browser,\n            // so we mimic that behavior\n            this.manualAutoplay_(this.autoplay() === true && this.options_.normalizeAutoplay ? 'play' : this.autoplay());\n        }\n\n        /**\n         * Handle autoplay string values, rather than the typical boolean\n         * values that should be handled by the tech. Note that this is not\n         * part of any specification. Valid values and what they do can be\n         * found on the autoplay getter at Player#autoplay()\n         */\n        manualAutoplay_(type) {\n            if (!this.tech_ || typeof type !== 'string') {\n                return;\n            }\n\n            // Save original muted() value, set muted to true, and attempt to play().\n            // On promise rejection, restore muted from saved value\n            const resolveMuted = () => {\n                const previouslyMuted = this.muted();\n                this.muted(true);\n                const restoreMuted = () => {\n                    this.muted(previouslyMuted);\n                };\n\n                // restore muted on play terminatation\n                this.playTerminatedQueue_.push(restoreMuted);\n                const mutedPromise = this.play();\n                if (!isPromise(mutedPromise)) {\n                    return;\n                }\n                return mutedPromise.catch(err => {\n                    restoreMuted();\n                    throw new Error(`Rejection at manualAutoplay. Restoring muted value. ${err ? err : ''}`);\n                });\n            };\n            let promise;\n\n            // if muted defaults to true\n            // the only thing we can do is call play\n            if (type === 'any' && !this.muted()) {\n                promise = this.play();\n                if (isPromise(promise)) {\n                    promise = promise.catch(resolveMuted);\n                }\n            } else if (type === 'muted' && !this.muted()) {\n                promise = resolveMuted();\n            } else {\n                promise = this.play();\n            }\n            if (!isPromise(promise)) {\n                return;\n            }\n            return promise.then(() => {\n                this.trigger({\n                    type: 'autoplay-success',\n                    autoplay: type\n                });\n            }).catch(() => {\n                this.trigger({\n                    type: 'autoplay-failure',\n                    autoplay: type\n                });\n            });\n        }\n\n        /**\n         * Update the internal source caches so that we return the correct source from\n         * `src()`, `currentSource()`, and `currentSources()`.\n         *\n         * > Note: `currentSources` will not be updated if the source that is passed in exists\n         *         in the current `currentSources` cache.\n         *\n         *\n         * @param {Tech~SourceObject} srcObj\n         *        A string or object source to update our caches to.\n         */\n        updateSourceCaches_(srcObj = '') {\n            let src = srcObj;\n            let type = '';\n            if (typeof src !== 'string') {\n                src = srcObj.src;\n                type = srcObj.type;\n            }\n\n            // make sure all the caches are set to default values\n            // to prevent null checking\n            this.cache_.source = this.cache_.source || {};\n            this.cache_.sources = this.cache_.sources || [];\n\n            // try to get the type of the src that was passed in\n            if (src && !type) {\n                type = findMimetype(this, src);\n            }\n\n            // update `currentSource` cache always\n            this.cache_.source = merge$2({}, srcObj, {\n                src,\n                type\n            });\n            const matchingSources = this.cache_.sources.filter(s => s.src && s.src === src);\n            const sourceElSources = [];\n            const sourceEls = this.$$('source');\n            const matchingSourceEls = [];\n            for (let i = 0; i < sourceEls.length; i++) {\n                const sourceObj = getAttributes(sourceEls[i]);\n                sourceElSources.push(sourceObj);\n                if (sourceObj.src && sourceObj.src === src) {\n                    matchingSourceEls.push(sourceObj.src);\n                }\n            }\n\n            // if we have matching source els but not matching sources\n            // the current source cache is not up to date\n            if (matchingSourceEls.length && !matchingSources.length) {\n                this.cache_.sources = sourceElSources;\n                // if we don't have matching source or source els set the\n                // sources cache to the `currentSource` cache\n            } else if (!matchingSources.length) {\n                this.cache_.sources = [this.cache_.source];\n            }\n\n            // update the tech `src` cache\n            this.cache_.src = src;\n        }\n\n        /**\n         * *EXPERIMENTAL* Fired when the source is set or changed on the {@link Tech}\n         * causing the media element to reload.\n         *\n         * It will fire for the initial source and each subsequent source.\n         * This event is a custom event from Video.js and is triggered by the {@link Tech}.\n         *\n         * The event object for this event contains a `src` property that will contain the source\n         * that was available when the event was triggered. This is generally only necessary if Video.js\n         * is switching techs while the source was being changed.\n         *\n         * It is also fired when `load` is called on the player (or media element)\n         * because the {@link https://html.spec.whatwg.org/multipage/media.html#dom-media-load|specification for `load`}\n         * says that the resource selection algorithm needs to be aborted and restarted.\n         * In this case, it is very likely that the `src` property will be set to the\n         * empty string `\"\"` to indicate we do not know what the source will be but\n         * that it is changing.\n         *\n         * *This event is currently still experimental and may change in minor releases.*\n         * __To use this, pass `enableSourceset` option to the player.__\n         *\n         * @event Player#sourceset\n         * @type {Event}\n         * @prop {string} src\n         *                The source url available when the `sourceset` was triggered.\n         *                It will be an empty string if we cannot know what the source is\n         *                but know that the source will change.\n         */\n        /**\n         * Retrigger the `sourceset` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#sourceset\n         * @listens Tech#sourceset\n         * @private\n         */\n        handleTechSourceset_(event) {\n            // only update the source cache when the source\n            // was not updated using the player api\n            if (!this.changingSrc_) {\n                let updateSourceCaches = src => this.updateSourceCaches_(src);\n                const playerSrc = this.currentSource().src;\n                const eventSrc = event.src;\n\n                // if we have a playerSrc that is not a blob, and a tech src that is a blob\n                if (playerSrc && !/^blob:/.test(playerSrc) && /^blob:/.test(eventSrc)) {\n                    // if both the tech source and the player source were updated we assume\n                    // something like @videojs/http-streaming did the sourceset and skip updating the source cache.\n                    if (!this.lastSource_ || this.lastSource_.tech !== eventSrc && this.lastSource_.player !== playerSrc) {\n                        updateSourceCaches = () => {};\n                    }\n                }\n\n                // update the source to the initial source right away\n                // in some cases this will be empty string\n                updateSourceCaches(eventSrc);\n\n                // if the `sourceset` `src` was an empty string\n                // wait for a `loadstart` to update the cache to `currentSrc`.\n                // If a sourceset happens before a `loadstart`, we reset the state\n                if (!event.src) {\n                    this.tech_.any(['sourceset', 'loadstart'], e => {\n                        // if a sourceset happens before a `loadstart` there\n                        // is nothing to do as this `handleTechSourceset_`\n                        // will be called again and this will be handled there.\n                        if (e.type === 'sourceset') {\n                            return;\n                        }\n                        const techSrc = this.techGet_('currentSrc');\n                        this.lastSource_.tech = techSrc;\n                        this.updateSourceCaches_(techSrc);\n                    });\n                }\n            }\n            this.lastSource_ = {\n                player: this.currentSource().src,\n                tech: event.src\n            };\n            this.trigger({\n                src: event.src,\n                type: 'sourceset'\n            });\n        }\n\n        /**\n         * Add/remove the vjs-has-started class\n         *\n         *\n         * @param {boolean} request\n         *        - true: adds the class\n         *        - false: remove the class\n         *\n         * @return {boolean}\n         *         the boolean value of hasStarted_\n         */\n        hasStarted(request) {\n            if (request === undefined) {\n                // act as getter, if we have no request to change\n                return this.hasStarted_;\n            }\n            if (request === this.hasStarted_) {\n                return;\n            }\n            this.hasStarted_ = request;\n            if (this.hasStarted_) {\n                this.addClass('vjs-has-started');\n            } else {\n                this.removeClass('vjs-has-started');\n            }\n        }\n\n        /**\n         * Fired whenever the media begins or resumes playback\n         *\n         * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-play}\n         * @fires Player#play\n         * @listens Tech#play\n         * @private\n         */\n        handleTechPlay_() {\n            this.removeClass('vjs-ended', 'vjs-paused');\n            this.addClass('vjs-playing');\n\n            // hide the poster when the user hits play\n            this.hasStarted(true);\n            /**\n             * Triggered whenever an {@link Tech#play} event happens. Indicates that\n             * playback has started or resumed.\n             *\n             * @event Player#play\n             * @type {Event}\n             */\n            this.trigger('play');\n        }\n\n        /**\n         * Retrigger the `ratechange` event that was triggered by the {@link Tech}.\n         *\n         * If there were any events queued while the playback rate was zero, fire\n         * those events now.\n         *\n         * @private\n         * @method Player#handleTechRateChange_\n         * @fires Player#ratechange\n         * @listens Tech#ratechange\n         */\n        handleTechRateChange_() {\n            if (this.tech_.playbackRate() > 0 && this.cache_.lastPlaybackRate === 0) {\n                this.queuedCallbacks_.forEach(queued => queued.callback(queued.event));\n                this.queuedCallbacks_ = [];\n            }\n            this.cache_.lastPlaybackRate = this.tech_.playbackRate();\n            /**\n             * Fires when the playing speed of the audio/video is changed\n             *\n             * @event Player#ratechange\n             * @type {event}\n             */\n            this.trigger('ratechange');\n        }\n\n        /**\n         * Retrigger the `waiting` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#waiting\n         * @listens Tech#waiting\n         * @private\n         */\n        handleTechWaiting_() {\n            this.addClass('vjs-waiting');\n            /**\n             * A readyState change on the DOM element has caused playback to stop.\n             *\n             * @event Player#waiting\n             * @type {Event}\n             */\n            this.trigger('waiting');\n\n            // Browsers may emit a timeupdate event after a waiting event. In order to prevent\n            // premature removal of the waiting class, wait for the time to change.\n            const timeWhenWaiting = this.currentTime();\n            const timeUpdateListener = () => {\n                if (timeWhenWaiting !== this.currentTime()) {\n                    this.removeClass('vjs-waiting');\n                    this.off('timeupdate', timeUpdateListener);\n                }\n            };\n            this.on('timeupdate', timeUpdateListener);\n        }\n\n        /**\n         * Retrigger the `canplay` event that was triggered by the {@link Tech}.\n         * > Note: This is not consistent between browsers. See #1351\n         *\n         * @fires Player#canplay\n         * @listens Tech#canplay\n         * @private\n         */\n        handleTechCanPlay_() {\n            this.removeClass('vjs-waiting');\n            /**\n             * The media has a readyState of HAVE_FUTURE_DATA or greater.\n             *\n             * @event Player#canplay\n             * @type {Event}\n             */\n            this.trigger('canplay');\n        }\n\n        /**\n         * Retrigger the `canplaythrough` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#canplaythrough\n         * @listens Tech#canplaythrough\n         * @private\n         */\n        handleTechCanPlayThrough_() {\n            this.removeClass('vjs-waiting');\n            /**\n             * The media has a readyState of HAVE_ENOUGH_DATA or greater. This means that the\n             * entire media file can be played without buffering.\n             *\n             * @event Player#canplaythrough\n             * @type {Event}\n             */\n            this.trigger('canplaythrough');\n        }\n\n        /**\n         * Retrigger the `playing` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#playing\n         * @listens Tech#playing\n         * @private\n         */\n        handleTechPlaying_() {\n            this.removeClass('vjs-waiting');\n            /**\n             * The media is no longer blocked from playback, and has started playing.\n             *\n             * @event Player#playing\n             * @type {Event}\n             */\n            this.trigger('playing');\n        }\n\n        /**\n         * Retrigger the `seeking` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#seeking\n         * @listens Tech#seeking\n         * @private\n         */\n        handleTechSeeking_() {\n            this.addClass('vjs-seeking');\n            /**\n             * Fired whenever the player is jumping to a new time\n             *\n             * @event Player#seeking\n             * @type {Event}\n             */\n            this.trigger('seeking');\n        }\n\n        /**\n         * Retrigger the `seeked` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#seeked\n         * @listens Tech#seeked\n         * @private\n         */\n        handleTechSeeked_() {\n            this.removeClass('vjs-seeking', 'vjs-ended');\n            /**\n             * Fired when the player has finished jumping to a new time\n             *\n             * @event Player#seeked\n             * @type {Event}\n             */\n            this.trigger('seeked');\n        }\n\n        /**\n         * Retrigger the `pause` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#pause\n         * @listens Tech#pause\n         * @private\n         */\n        handleTechPause_() {\n            this.removeClass('vjs-playing');\n            this.addClass('vjs-paused');\n            /**\n             * Fired whenever the media has been paused\n             *\n             * @event Player#pause\n             * @type {Event}\n             */\n            this.trigger('pause');\n        }\n\n        /**\n         * Retrigger the `ended` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#ended\n         * @listens Tech#ended\n         * @private\n         */\n        handleTechEnded_() {\n            this.addClass('vjs-ended');\n            this.removeClass('vjs-waiting');\n            if (this.options_.loop) {\n                this.currentTime(0);\n                this.play();\n            } else if (!this.paused()) {\n                this.pause();\n            }\n\n            /**\n             * Fired when the end of the media resource is reached (currentTime == duration)\n             *\n             * @event Player#ended\n             * @type {Event}\n             */\n            this.trigger('ended');\n        }\n\n        /**\n         * Fired when the duration of the media resource is first known or changed\n         *\n         * @listens Tech#durationchange\n         * @private\n         */\n        handleTechDurationChange_() {\n            this.duration(this.techGet_('duration'));\n        }\n\n        /**\n         * Handle a click on the media element to play/pause\n         *\n         * @param {Event} event\n         *        the event that caused this function to trigger\n         *\n         * @listens Tech#click\n         * @private\n         */\n        handleTechClick_(event) {\n            // When controls are disabled a click should not toggle playback because\n            // the click is considered a control\n            if (!this.controls_) {\n                return;\n            }\n            if (this.options_ === undefined || this.options_.userActions === undefined || this.options_.userActions.click === undefined || this.options_.userActions.click !== false) {\n                if (this.options_ !== undefined && this.options_.userActions !== undefined && typeof this.options_.userActions.click === 'function') {\n                    this.options_.userActions.click.call(this, event);\n                } else if (this.paused()) {\n                    silencePromise(this.play());\n                } else {\n                    this.pause();\n                }\n            }\n        }\n\n        /**\n         * Handle a double-click on the media element to enter/exit fullscreen\n         *\n         * @param {Event} event\n         *        the event that caused this function to trigger\n         *\n         * @listens Tech#dblclick\n         * @private\n         */\n        handleTechDoubleClick_(event) {\n            if (!this.controls_) {\n                return;\n            }\n\n            // we do not want to toggle fullscreen state\n            // when double-clicking inside a control bar or a modal\n            const inAllowedEls = Array.prototype.some.call(this.$$('.vjs-control-bar, .vjs-modal-dialog'), el => el.contains(event.target));\n            if (!inAllowedEls) {\n                /*\n         * options.userActions.doubleClick\n         *\n         * If `undefined` or `true`, double-click toggles fullscreen if controls are present\n         * Set to `false` to disable double-click handling\n         * Set to a function to substitute an external double-click handler\n         */\n                if (this.options_ === undefined || this.options_.userActions === undefined || this.options_.userActions.doubleClick === undefined || this.options_.userActions.doubleClick !== false) {\n                    if (this.options_ !== undefined && this.options_.userActions !== undefined && typeof this.options_.userActions.doubleClick === 'function') {\n                        this.options_.userActions.doubleClick.call(this, event);\n                    } else if (this.isFullscreen()) {\n                        this.exitFullscreen();\n                    } else {\n                        this.requestFullscreen();\n                    }\n                }\n            }\n        }\n\n        /**\n         * Handle a tap on the media element. It will toggle the user\n         * activity state, which hides and shows the controls.\n         *\n         * @listens Tech#tap\n         * @private\n         */\n        handleTechTap_() {\n            this.userActive(!this.userActive());\n        }\n\n        /**\n         * Handle touch to start\n         *\n         * @listens Tech#touchstart\n         * @private\n         */\n        handleTechTouchStart_() {\n            this.userWasActive = this.userActive();\n        }\n\n        /**\n         * Handle touch to move\n         *\n         * @listens Tech#touchmove\n         * @private\n         */\n        handleTechTouchMove_() {\n            if (this.userWasActive) {\n                this.reportUserActivity();\n            }\n        }\n\n        /**\n         * Handle touch to end\n         *\n         * @param {Event} event\n         *        the touchend event that triggered\n         *        this function\n         *\n         * @listens Tech#touchend\n         * @private\n         */\n        handleTechTouchEnd_(event) {\n            // Stop the mouse events from also happening\n            if (event.cancelable) {\n                event.preventDefault();\n            }\n        }\n\n        /**\n         * @private\n         */\n        toggleFullscreenClass_() {\n            if (this.isFullscreen()) {\n                this.addClass('vjs-fullscreen');\n            } else {\n                this.removeClass('vjs-fullscreen');\n            }\n        }\n\n        /**\n         * when the document fschange event triggers it calls this\n         */\n        documentFullscreenChange_(e) {\n            const targetPlayer = e.target.player;\n\n            // if another player was fullscreen\n            // do a null check for targetPlayer because older firefox's would put document as e.target\n            if (targetPlayer && targetPlayer !== this) {\n                return;\n            }\n            const el = this.el();\n            let isFs = document[this.fsApi_.fullscreenElement] === el;\n            if (!isFs && el.matches) {\n                isFs = el.matches(':' + this.fsApi_.fullscreen);\n            }\n            this.isFullscreen(isFs);\n        }\n\n        /**\n         * Handle Tech Fullscreen Change\n         *\n         * @param {Event} event\n         *        the fullscreenchange event that triggered this function\n         *\n         * @param {Object} data\n         *        the data that was sent with the event\n         *\n         * @private\n         * @listens Tech#fullscreenchange\n         * @fires Player#fullscreenchange\n         */\n        handleTechFullscreenChange_(event, data) {\n            if (data) {\n                if (data.nativeIOSFullscreen) {\n                    this.addClass('vjs-ios-native-fs');\n                    this.tech_.one('webkitendfullscreen', () => {\n                        this.removeClass('vjs-ios-native-fs');\n                    });\n                }\n                this.isFullscreen(data.isFullscreen);\n            }\n        }\n        handleTechFullscreenError_(event, err) {\n            this.trigger('fullscreenerror', err);\n        }\n\n        /**\n         * @private\n         */\n        togglePictureInPictureClass_() {\n            if (this.isInPictureInPicture()) {\n                this.addClass('vjs-picture-in-picture');\n            } else {\n                this.removeClass('vjs-picture-in-picture');\n            }\n        }\n\n        /**\n         * Handle Tech Enter Picture-in-Picture.\n         *\n         * @param {Event} event\n         *        the enterpictureinpicture event that triggered this function\n         *\n         * @private\n         * @listens Tech#enterpictureinpicture\n         */\n        handleTechEnterPictureInPicture_(event) {\n            this.isInPictureInPicture(true);\n        }\n\n        /**\n         * Handle Tech Leave Picture-in-Picture.\n         *\n         * @param {Event} event\n         *        the leavepictureinpicture event that triggered this function\n         *\n         * @private\n         * @listens Tech#leavepictureinpicture\n         */\n        handleTechLeavePictureInPicture_(event) {\n            this.isInPictureInPicture(false);\n        }\n\n        /**\n         * Fires when an error occurred during the loading of an audio/video.\n         *\n         * @private\n         * @listens Tech#error\n         */\n        handleTechError_() {\n            const error = this.tech_.error();\n            if (error) {\n                this.error(error);\n            }\n        }\n\n        /**\n         * Retrigger the `textdata` event that was triggered by the {@link Tech}.\n         *\n         * @fires Player#textdata\n         * @listens Tech#textdata\n         * @private\n         */\n        handleTechTextData_() {\n            let data = null;\n            if (arguments.length > 1) {\n                data = arguments[1];\n            }\n\n            /**\n             * Fires when we get a textdata event from tech\n             *\n             * @event Player#textdata\n             * @type {Event}\n             */\n            this.trigger('textdata', data);\n        }\n\n        /**\n         * Get object for cached values.\n         *\n         * @return {Object}\n         *         get the current object cache\n         */\n        getCache() {\n            return this.cache_;\n        }\n\n        /**\n         * Resets the internal cache object.\n         *\n         * Using this function outside the player constructor or reset method may\n         * have unintended side-effects.\n         *\n         * @private\n         */\n        resetCache_() {\n            this.cache_ = {\n                // Right now, the currentTime is not _really_ cached because it is always\n                // retrieved from the tech (see: currentTime). However, for completeness,\n                // we set it to zero here to ensure that if we do start actually caching\n                // it, we reset it along with everything else.\n                currentTime: 0,\n                initTime: 0,\n                inactivityTimeout: this.options_.inactivityTimeout,\n                duration: NaN,\n                lastVolume: 1,\n                lastPlaybackRate: this.defaultPlaybackRate(),\n                media: null,\n                src: '',\n                source: {},\n                sources: [],\n                playbackRates: [],\n                volume: 1\n            };\n        }\n\n        /**\n         * Pass values to the playback tech\n         *\n         * @param {string} [method]\n         *        the method to call\n         *\n         * @param {Object} [arg]\n         *        the argument to pass\n         *\n         * @private\n         */\n        techCall_(method, arg) {\n            // If it's not ready yet, call method when it is\n\n            this.ready(function () {\n                if (method in allowedSetters) {\n                    return set(this.middleware_, this.tech_, method, arg);\n                } else if (method in allowedMediators) {\n                    return mediate(this.middleware_, this.tech_, method, arg);\n                }\n                try {\n                    if (this.tech_) {\n                        this.tech_[method](arg);\n                    }\n                } catch (e) {\n                    log$1(e);\n                    throw e;\n                }\n            }, true);\n        }\n\n        /**\n         * Mediate attempt to call playback tech method\n         * and return the value of the method called.\n         *\n         * @param {string} method\n         *        Tech method\n         *\n         * @return {*}\n         *         Value returned by the tech method called, undefined if tech\n         *         is not ready or tech method is not present\n         *\n         * @private\n         */\n        techGet_(method) {\n            if (!this.tech_ || !this.tech_.isReady_) {\n                return;\n            }\n            if (method in allowedGetters) {\n                return get(this.middleware_, this.tech_, method);\n            } else if (method in allowedMediators) {\n                return mediate(this.middleware_, this.tech_, method);\n            }\n\n            // Log error when playback tech object is present but method\n            // is undefined or unavailable\n            try {\n                return this.tech_[method]();\n            } catch (e) {\n                // When building additional tech libs, an expected method may not be defined yet\n                if (this.tech_[method] === undefined) {\n                    log$1(`Video.js: ${method} method not defined for ${this.techName_} playback technology.`, e);\n                    throw e;\n                }\n\n                // When a method isn't available on the object it throws a TypeError\n                if (e.name === 'TypeError') {\n                    log$1(`Video.js: ${method} unavailable on ${this.techName_} playback technology element.`, e);\n                    this.tech_.isReady_ = false;\n                    throw e;\n                }\n\n                // If error unknown, just log and throw\n                log$1(e);\n                throw e;\n            }\n        }\n\n        /**\n         * Attempt to begin playback at the first opportunity.\n         *\n         * @return {Promise|undefined}\n         *         Returns a promise if the browser supports Promises (or one\n         *         was passed in as an option). This promise will be resolved on\n         *         the return value of play. If this is undefined it will fulfill the\n         *         promise chain otherwise the promise chain will be fulfilled when\n         *         the promise from play is fulfilled.\n         */\n        play() {\n            return new Promise(resolve => {\n                this.play_(resolve);\n            });\n        }\n\n        /**\n         * The actual logic for play, takes a callback that will be resolved on the\n         * return value of play. This allows us to resolve to the play promise if there\n         * is one on modern browsers.\n         *\n         * @private\n         * @param {Function} [callback]\n         *        The callback that should be called when the techs play is actually called\n         */\n        play_(callback = silencePromise) {\n            this.playCallbacks_.push(callback);\n            const isSrcReady = Boolean(!this.changingSrc_ && (this.src() || this.currentSrc()));\n            const isSafariOrIOS = Boolean(IS_ANY_SAFARI || IS_IOS);\n\n            // treat calls to play_ somewhat like the `one` event function\n            if (this.waitToPlay_) {\n                this.off(['ready', 'loadstart'], this.waitToPlay_);\n                this.waitToPlay_ = null;\n            }\n\n            // if the player/tech is not ready or the src itself is not ready\n            // queue up a call to play on `ready` or `loadstart`\n            if (!this.isReady_ || !isSrcReady) {\n                this.waitToPlay_ = e => {\n                    this.play_();\n                };\n                this.one(['ready', 'loadstart'], this.waitToPlay_);\n\n                // if we are in Safari, there is a high chance that loadstart will trigger after the gesture timeperiod\n                // in that case, we need to prime the video element by calling load so it'll be ready in time\n                if (!isSrcReady && isSafariOrIOS) {\n                    this.load();\n                }\n                return;\n            }\n\n            // If the player/tech is ready and we have a source, we can attempt playback.\n            const val = this.techGet_('play');\n\n            // For native playback, reset the progress bar if we get a play call from a replay.\n            const isNativeReplay = isSafariOrIOS && this.hasClass('vjs-ended');\n            if (isNativeReplay) {\n                this.resetProgressBar_();\n            }\n            // play was terminated if the returned value is null\n            if (val === null) {\n                this.runPlayTerminatedQueue_();\n            } else {\n                this.runPlayCallbacks_(val);\n            }\n        }\n\n        /**\n         * These functions will be run when if play is terminated. If play\n         * runPlayCallbacks_ is run these function will not be run. This allows us\n         * to differentiate between a terminated play and an actual call to play.\n         */\n        runPlayTerminatedQueue_() {\n            const queue = this.playTerminatedQueue_.slice(0);\n            this.playTerminatedQueue_ = [];\n            queue.forEach(function (q) {\n                q();\n            });\n        }\n\n        /**\n         * When a callback to play is delayed we have to run these\n         * callbacks when play is actually called on the tech. This function\n         * runs the callbacks that were delayed and accepts the return value\n         * from the tech.\n         *\n         * @param {undefined|Promise} val\n         *        The return value from the tech.\n         */\n        runPlayCallbacks_(val) {\n            const callbacks = this.playCallbacks_.slice(0);\n            this.playCallbacks_ = [];\n            // clear play terminatedQueue since we finished a real play\n            this.playTerminatedQueue_ = [];\n            callbacks.forEach(function (cb) {\n                cb(val);\n            });\n        }\n\n        /**\n         * Pause the video playback\n         */\n        pause() {\n            this.techCall_('pause');\n        }\n\n        /**\n         * Check if the player is paused or has yet to play\n         *\n         * @return {boolean}\n         *         - false: if the media is currently playing\n         *         - true: if media is not currently playing\n         */\n        paused() {\n            // The initial state of paused should be true (in Safari it's actually false)\n            return this.techGet_('paused') === false ? false : true;\n        }\n\n        /**\n         * Get a TimeRange object representing the current ranges of time that the user\n         * has played.\n         *\n         * @return { import('./utils/time').TimeRange }\n         *         A time range object that represents all the increments of time that have\n         *         been played.\n         */\n        played() {\n            return this.techGet_('played') || createTimeRanges$1(0, 0);\n        }\n\n        /**\n         * Sets or returns whether or not the user is \"scrubbing\". Scrubbing is\n         * when the user has clicked the progress bar handle and is\n         * dragging it along the progress bar.\n         *\n         * @param {boolean} [isScrubbing]\n         *        whether the user is or is not scrubbing\n         *\n         * @return {boolean|undefined}\n         *         - The value of scrubbing when getting\n         *         - Nothing when setting\n         */\n        scrubbing(isScrubbing) {\n            if (typeof isScrubbing === 'undefined') {\n                return this.scrubbing_;\n            }\n            this.scrubbing_ = !!isScrubbing;\n            this.techCall_('setScrubbing', this.scrubbing_);\n            if (isScrubbing) {\n                this.addClass('vjs-scrubbing');\n            } else {\n                this.removeClass('vjs-scrubbing');\n            }\n        }\n\n        /**\n         * Get or set the current time (in seconds)\n         *\n         * @param {number|string} [seconds]\n         *        The time to seek to in seconds\n         *\n         * @return {number|undefined}\n         *         - the current time in seconds when getting\n         *         - Nothing when setting\n         */\n        currentTime(seconds) {\n            if (seconds === undefined) {\n                // cache last currentTime and return. default to 0 seconds\n                //\n                // Caching the currentTime is meant to prevent a massive amount of reads on the tech's\n                // currentTime when scrubbing, but may not provide much performance benefit after all.\n                // Should be tested. Also something has to read the actual current time or the cache will\n                // never get updated.\n                this.cache_.currentTime = this.techGet_('currentTime') || 0;\n                return this.cache_.currentTime;\n            }\n            if (seconds < 0) {\n                seconds = 0;\n            }\n            if (!this.isReady_ || this.changingSrc_ || !this.tech_ || !this.tech_.isReady_) {\n                this.cache_.initTime = seconds;\n                this.off('canplay', this.boundApplyInitTime_);\n                this.one('canplay', this.boundApplyInitTime_);\n                return;\n            }\n            this.techCall_('setCurrentTime', seconds);\n            this.cache_.initTime = 0;\n            if (isFinite(seconds)) {\n                this.cache_.currentTime = Number(seconds);\n            }\n        }\n\n        /**\n         * Apply the value of initTime stored in cache as currentTime.\n         *\n         * @private\n         */\n        applyInitTime_() {\n            this.currentTime(this.cache_.initTime);\n        }\n\n        /**\n         * Normally gets the length in time of the video in seconds;\n         * in all but the rarest use cases an argument will NOT be passed to the method\n         *\n         * > **NOTE**: The video must have started loading before the duration can be\n         * known, and depending on preload behaviour may not be known until the video starts\n         * playing.\n         *\n         * @fires Player#durationchange\n         *\n         * @param {number} [seconds]\n         *        The duration of the video to set in seconds\n         *\n         * @return {number|undefined}\n         *         - The duration of the video in seconds when getting\n         *         - Nothing when setting\n         */\n        duration(seconds) {\n            if (seconds === undefined) {\n                // return NaN if the duration is not known\n                return this.cache_.duration !== undefined ? this.cache_.duration : NaN;\n            }\n            seconds = parseFloat(seconds);\n\n            // Standardize on Infinity for signaling video is live\n            if (seconds < 0) {\n                seconds = Infinity;\n            }\n            if (seconds !== this.cache_.duration) {\n                // Cache the last set value for optimized scrubbing\n                this.cache_.duration = seconds;\n                if (seconds === Infinity) {\n                    this.addClass('vjs-live');\n                } else {\n                    this.removeClass('vjs-live');\n                }\n                if (!isNaN(seconds)) {\n                    // Do not fire durationchange unless the duration value is known.\n                    // @see [Spec]{@link https://www.w3.org/TR/2011/WD-html5-20110113/video.html#media-element-load-algorithm}\n\n                    /**\n                     * @event Player#durationchange\n                     * @type {Event}\n                     */\n                    this.trigger('durationchange');\n                }\n            }\n        }\n\n        /**\n         * Calculates how much time is left in the video. Not part\n         * of the native video API.\n         *\n         * @return {number}\n         *         The time remaining in seconds\n         */\n        remainingTime() {\n            return this.duration() - this.currentTime();\n        }\n\n        /**\n         * A remaining time function that is intended to be used when\n         * the time is to be displayed directly to the user.\n         *\n         * @return {number}\n         *         The rounded time remaining in seconds\n         */\n        remainingTimeDisplay() {\n            return Math.floor(this.duration()) - Math.floor(this.currentTime());\n        }\n\n        //\n        // Kind of like an array of portions of the video that have been downloaded.\n\n        /**\n         * Get a TimeRange object with an array of the times of the video\n         * that have been downloaded. If you just want the percent of the\n         * video that's been downloaded, use bufferedPercent.\n         *\n         * @see [Buffered Spec]{@link http://dev.w3.org/html5/spec/video.html#dom-media-buffered}\n         *\n         * @return { import('./utils/time').TimeRange }\n         *         A mock {@link TimeRanges} object (following HTML spec)\n         */\n        buffered() {\n            let buffered = this.techGet_('buffered');\n            if (!buffered || !buffered.length) {\n                buffered = createTimeRanges$1(0, 0);\n            }\n            return buffered;\n        }\n\n        /**\n         * Get the TimeRanges of the media that are currently available\n         * for seeking to.\n         *\n         * @see [Seekable Spec]{@link https://html.spec.whatwg.org/multipage/media.html#dom-media-seekable}\n         *\n         * @return { import('./utils/time').TimeRange }\n         *         A mock {@link TimeRanges} object (following HTML spec)\n         */\n        seekable() {\n            let seekable = this.techGet_('seekable');\n            if (!seekable || !seekable.length) {\n                seekable = createTimeRanges$1(0, 0);\n            }\n            return seekable;\n        }\n\n        /**\n         * Returns whether the player is in the \"seeking\" state.\n         *\n         * @return {boolean} True if the player is in the seeking state, false if not.\n         */\n        seeking() {\n            return this.techGet_('seeking');\n        }\n\n        /**\n         * Returns whether the player is in the \"ended\" state.\n         *\n         * @return {boolean} True if the player is in the ended state, false if not.\n         */\n        ended() {\n            return this.techGet_('ended');\n        }\n\n        /**\n         * Returns the current state of network activity for the element, from\n         * the codes in the list below.\n         * - NETWORK_EMPTY (numeric value 0)\n         *   The element has not yet been initialised. All attributes are in\n         *   their initial states.\n         * - NETWORK_IDLE (numeric value 1)\n         *   The element's resource selection algorithm is active and has\n         *   selected a resource, but it is not actually using the network at\n         *   this time.\n         * - NETWORK_LOADING (numeric value 2)\n         *   The user agent is actively trying to download data.\n         * - NETWORK_NO_SOURCE (numeric value 3)\n         *   The element's resource selection algorithm is active, but it has\n         *   not yet found a resource to use.\n         *\n         * @see https://html.spec.whatwg.org/multipage/embedded-content.html#network-states\n         * @return {number} the current network activity state\n         */\n        networkState() {\n            return this.techGet_('networkState');\n        }\n\n        /**\n         * Returns a value that expresses the current state of the element\n         * with respect to rendering the current playback position, from the\n         * codes in the list below.\n         * - HAVE_NOTHING (numeric value 0)\n         *   No information regarding the media resource is available.\n         * - HAVE_METADATA (numeric value 1)\n         *   Enough of the resource has been obtained that the duration of the\n         *   resource is available.\n         * - HAVE_CURRENT_DATA (numeric value 2)\n         *   Data for the immediate current playback position is available.\n         * - HAVE_FUTURE_DATA (numeric value 3)\n         *   Data for the immediate current playback position is available, as\n         *   well as enough data for the user agent to advance the current\n         *   playback position in the direction of playback.\n         * - HAVE_ENOUGH_DATA (numeric value 4)\n         *   The user agent estimates that enough data is available for\n         *   playback to proceed uninterrupted.\n         *\n         * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-readystate\n         * @return {number} the current playback rendering state\n         */\n        readyState() {\n            return this.techGet_('readyState');\n        }\n\n        /**\n         * Get the percent (as a decimal) of the video that's been downloaded.\n         * This method is not a part of the native HTML video API.\n         *\n         * @return {number}\n         *         A decimal between 0 and 1 representing the percent\n         *         that is buffered 0 being 0% and 1 being 100%\n         */\n        bufferedPercent() {\n            return bufferedPercent(this.buffered(), this.duration());\n        }\n\n        /**\n         * Get the ending time of the last buffered time range\n         * This is used in the progress bar to encapsulate all time ranges.\n         *\n         * @return {number}\n         *         The end of the last buffered time range\n         */\n        bufferedEnd() {\n            const buffered = this.buffered();\n            const duration = this.duration();\n            let end = buffered.end(buffered.length - 1);\n            if (end > duration) {\n                end = duration;\n            }\n            return end;\n        }\n\n        /**\n         * Get or set the current volume of the media\n         *\n         * @param  {number} [percentAsDecimal]\n         *         The new volume as a decimal percent:\n         *         - 0 is muted/0%/off\n         *         - 1.0 is 100%/full\n         *         - 0.5 is half volume or 50%\n         *\n         * @return {number|undefined}\n         *         The current volume as a percent when getting\n         */\n        volume(percentAsDecimal) {\n            let vol;\n            if (percentAsDecimal !== undefined) {\n                // Force value to between 0 and 1\n                vol = Math.max(0, Math.min(1, percentAsDecimal));\n                this.cache_.volume = vol;\n                this.techCall_('setVolume', vol);\n                if (vol > 0) {\n                    this.lastVolume_(vol);\n                }\n                return;\n            }\n\n            // Default to 1 when returning current volume.\n            vol = parseFloat(this.techGet_('volume'));\n            return isNaN(vol) ? 1 : vol;\n        }\n\n        /**\n         * Get the current muted state, or turn mute on or off\n         *\n         * @param {boolean} [muted]\n         *        - true to mute\n         *        - false to unmute\n         *\n         * @return {boolean|undefined}\n         *         - true if mute is on and getting\n         *         - false if mute is off and getting\n         *         - nothing if setting\n         */\n        muted(muted) {\n            if (muted !== undefined) {\n                this.techCall_('setMuted', muted);\n                return;\n            }\n            return this.techGet_('muted') || false;\n        }\n\n        /**\n         * Get the current defaultMuted state, or turn defaultMuted on or off. defaultMuted\n         * indicates the state of muted on initial playback.\n         *\n         * ```js\n         *   var myPlayer = videojs('some-player-id');\n         *\n         *   myPlayer.src(\"http://www.example.com/path/to/video.mp4\");\n         *\n         *   // get, should be false\n         *   console.log(myPlayer.defaultMuted());\n         *   // set to true\n         *   myPlayer.defaultMuted(true);\n         *   // get should be true\n         *   console.log(myPlayer.defaultMuted());\n         * ```\n         *\n         * @param {boolean} [defaultMuted]\n         *        - true to mute\n         *        - false to unmute\n         *\n         * @return {boolean|undefined}\n         *         - true if defaultMuted is on and getting\n         *         - false if defaultMuted is off and getting\n         *         - Nothing when setting\n         */\n        defaultMuted(defaultMuted) {\n            if (defaultMuted !== undefined) {\n                this.techCall_('setDefaultMuted', defaultMuted);\n            }\n            return this.techGet_('defaultMuted') || false;\n        }\n\n        /**\n         * Get the last volume, or set it\n         *\n         * @param  {number} [percentAsDecimal]\n         *         The new last volume as a decimal percent:\n         *         - 0 is muted/0%/off\n         *         - 1.0 is 100%/full\n         *         - 0.5 is half volume or 50%\n         *\n         * @return {number|undefined}\n         *         - The current value of lastVolume as a percent when getting\n         *         - Nothing when setting\n         *\n         * @private\n         */\n        lastVolume_(percentAsDecimal) {\n            if (percentAsDecimal !== undefined && percentAsDecimal !== 0) {\n                this.cache_.lastVolume = percentAsDecimal;\n                return;\n            }\n            return this.cache_.lastVolume;\n        }\n\n        /**\n         * Check if current tech can support native fullscreen\n         * (e.g. with built in controls like iOS)\n         *\n         * @return {boolean}\n         *         if native fullscreen is supported\n         */\n        supportsFullScreen() {\n            return this.techGet_('supportsFullScreen') || false;\n        }\n\n        /**\n         * Check if the player is in fullscreen mode or tell the player that it\n         * is or is not in fullscreen mode.\n         *\n         * > NOTE: As of the latest HTML5 spec, isFullscreen is no longer an official\n         * property and instead document.fullscreenElement is used. But isFullscreen is\n         * still a valuable property for internal player workings.\n         *\n         * @param  {boolean} [isFS]\n         *         Set the players current fullscreen state\n         *\n         * @return {boolean|undefined}\n         *         - true if fullscreen is on and getting\n         *         - false if fullscreen is off and getting\n         *         - Nothing when setting\n         */\n        isFullscreen(isFS) {\n            if (isFS !== undefined) {\n                const oldValue = this.isFullscreen_;\n                this.isFullscreen_ = Boolean(isFS);\n\n                // if we changed fullscreen state and we're in prefixed mode, trigger fullscreenchange\n                // this is the only place where we trigger fullscreenchange events for older browsers\n                // fullWindow mode is treated as a prefixed event and will get a fullscreenchange event as well\n                if (this.isFullscreen_ !== oldValue && this.fsApi_.prefixed) {\n                    /**\n                     * @event Player#fullscreenchange\n                     * @type {Event}\n                     */\n                    this.trigger('fullscreenchange');\n                }\n                this.toggleFullscreenClass_();\n                return;\n            }\n            return this.isFullscreen_;\n        }\n\n        /**\n         * Increase the size of the video to full screen\n         * In some browsers, full screen is not supported natively, so it enters\n         * \"full window mode\", where the video fills the browser window.\n         * In browsers and devices that support native full screen, sometimes the\n         * browser's default controls will be shown, and not the Video.js custom skin.\n         * This includes most mobile devices (iOS, Android) and older versions of\n         * Safari.\n         *\n         * @param  {Object} [fullscreenOptions]\n         *         Override the player fullscreen options\n         *\n         * @fires Player#fullscreenchange\n         */\n        requestFullscreen(fullscreenOptions) {\n            if (this.isInPictureInPicture()) {\n                this.exitPictureInPicture();\n            }\n            const self = this;\n            return new Promise((resolve, reject) => {\n                function offHandler() {\n                    self.off('fullscreenerror', errorHandler);\n                    self.off('fullscreenchange', changeHandler);\n                }\n                function changeHandler() {\n                    offHandler();\n                    resolve();\n                }\n                function errorHandler(e, err) {\n                    offHandler();\n                    reject(err);\n                }\n                self.one('fullscreenchange', changeHandler);\n                self.one('fullscreenerror', errorHandler);\n                const promise = self.requestFullscreenHelper_(fullscreenOptions);\n                if (promise) {\n                    promise.then(offHandler, offHandler);\n                    promise.then(resolve, reject);\n                }\n            });\n        }\n        requestFullscreenHelper_(fullscreenOptions) {\n            let fsOptions;\n\n            // Only pass fullscreen options to requestFullscreen in spec-compliant browsers.\n            // Use defaults or player configured option unless passed directly to this method.\n            if (!this.fsApi_.prefixed) {\n                fsOptions = this.options_.fullscreen && this.options_.fullscreen.options || {};\n                if (fullscreenOptions !== undefined) {\n                    fsOptions = fullscreenOptions;\n                }\n            }\n\n            // This method works as follows:\n            // 1. if a fullscreen api is available, use it\n            //   1. call requestFullscreen with potential options\n            //   2. if we got a promise from above, use it to update isFullscreen()\n            // 2. otherwise, if the tech supports fullscreen, call `enterFullScreen` on it.\n            //   This is particularly used for iPhone, older iPads, and non-safari browser on iOS.\n            // 3. otherwise, use \"fullWindow\" mode\n            if (this.fsApi_.requestFullscreen) {\n                const promise = this.el_[this.fsApi_.requestFullscreen](fsOptions);\n\n                // Even on browsers with promise support this may not return a promise\n                if (promise) {\n                    promise.then(() => this.isFullscreen(true), () => this.isFullscreen(false));\n                }\n                return promise;\n            } else if (this.tech_.supportsFullScreen() && !this.options_.preferFullWindow === true) {\n                // we can't take the video.js controls fullscreen but we can go fullscreen\n                // with native controls\n                this.techCall_('enterFullScreen');\n            } else {\n                // fullscreen isn't supported so we'll just stretch the video element to\n                // fill the viewport\n                this.enterFullWindow();\n            }\n        }\n\n        /**\n         * Return the video to its normal size after having been in full screen mode\n         *\n         * @fires Player#fullscreenchange\n         */\n        exitFullscreen() {\n            const self = this;\n            return new Promise((resolve, reject) => {\n                function offHandler() {\n                    self.off('fullscreenerror', errorHandler);\n                    self.off('fullscreenchange', changeHandler);\n                }\n                function changeHandler() {\n                    offHandler();\n                    resolve();\n                }\n                function errorHandler(e, err) {\n                    offHandler();\n                    reject(err);\n                }\n                self.one('fullscreenchange', changeHandler);\n                self.one('fullscreenerror', errorHandler);\n                const promise = self.exitFullscreenHelper_();\n                if (promise) {\n                    promise.then(offHandler, offHandler);\n                    // map the promise to our resolve/reject methods\n                    promise.then(resolve, reject);\n                }\n            });\n        }\n        exitFullscreenHelper_() {\n            if (this.fsApi_.requestFullscreen) {\n                const promise = document[this.fsApi_.exitFullscreen]();\n\n                // Even on browsers with promise support this may not return a promise\n                if (promise) {\n                    // we're splitting the promise here, so, we want to catch the\n                    // potential error so that this chain doesn't have unhandled errors\n                    silencePromise(promise.then(() => this.isFullscreen(false)));\n                }\n                return promise;\n            } else if (this.tech_.supportsFullScreen() && !this.options_.preferFullWindow === true) {\n                this.techCall_('exitFullScreen');\n            } else {\n                this.exitFullWindow();\n            }\n        }\n\n        /**\n         * When fullscreen isn't supported we can stretch the\n         * video container to as wide as the browser will let us.\n         *\n         * @fires Player#enterFullWindow\n         */\n        enterFullWindow() {\n            this.isFullscreen(true);\n            this.isFullWindow = true;\n\n            // Storing original doc overflow value to return to when fullscreen is off\n            this.docOrigOverflow = document.documentElement.style.overflow;\n\n            // Add listener for esc key to exit fullscreen\n            on(document, 'keydown', this.boundFullWindowOnEscKey_);\n\n            // Hide any scroll bars\n            document.documentElement.style.overflow = 'hidden';\n\n            // Apply fullscreen styles\n            addClass(document.body, 'vjs-full-window');\n\n            /**\n             * @event Player#enterFullWindow\n             * @type {Event}\n             */\n            this.trigger('enterFullWindow');\n        }\n\n        /**\n         * Check for call to either exit full window or\n         * full screen on ESC key\n         *\n         * @param {string} event\n         *        Event to check for key press\n         */\n        fullWindowOnEscKey(event) {\n            if (keycode.isEventKey(event, 'Esc')) {\n                if (this.isFullscreen() === true) {\n                    if (!this.isFullWindow) {\n                        this.exitFullscreen();\n                    } else {\n                        this.exitFullWindow();\n                    }\n                }\n            }\n        }\n\n        /**\n         * Exit full window\n         *\n         * @fires Player#exitFullWindow\n         */\n        exitFullWindow() {\n            this.isFullscreen(false);\n            this.isFullWindow = false;\n            off(document, 'keydown', this.boundFullWindowOnEscKey_);\n\n            // Unhide scroll bars.\n            document.documentElement.style.overflow = this.docOrigOverflow;\n\n            // Remove fullscreen styles\n            removeClass(document.body, 'vjs-full-window');\n\n            // Resize the box, controller, and poster to original sizes\n            // this.positionAll();\n            /**\n             * @event Player#exitFullWindow\n             * @type {Event}\n             */\n            this.trigger('exitFullWindow');\n        }\n\n        /**\n         * Get or set disable Picture-in-Picture mode.\n         *\n         * @param {boolean} [value]\n         *                  - true will disable Picture-in-Picture mode\n         *                  - false will enable Picture-in-Picture mode\n         */\n        disablePictureInPicture(value) {\n            if (value === undefined) {\n                return this.techGet_('disablePictureInPicture');\n            }\n            this.techCall_('setDisablePictureInPicture', value);\n            this.options_.disablePictureInPicture = value;\n            this.trigger('disablepictureinpicturechanged');\n        }\n\n        /**\n         * Check if the player is in Picture-in-Picture mode or tell the player that it\n         * is or is not in Picture-in-Picture mode.\n         *\n         * @param  {boolean} [isPiP]\n         *         Set the players current Picture-in-Picture state\n         *\n         * @return {boolean|undefined}\n         *         - true if Picture-in-Picture is on and getting\n         *         - false if Picture-in-Picture is off and getting\n         *         - nothing if setting\n         */\n        isInPictureInPicture(isPiP) {\n            if (isPiP !== undefined) {\n                this.isInPictureInPicture_ = !!isPiP;\n                this.togglePictureInPictureClass_();\n                return;\n            }\n            return !!this.isInPictureInPicture_;\n        }\n\n        /**\n         * Create a floating video window always on top of other windows so that users may\n         * continue consuming media while they interact with other content sites, or\n         * applications on their device.\n         *\n         * This can use document picture-in-picture or element picture in picture\n         *\n         * Set `enableDocumentPictureInPicture` to `true` to use docPiP on a supported browser\n         * Else set `disablePictureInPicture` to `false` to disable elPiP on a supported browser\n         *\n         *\n         * @see [Spec]{@link https://w3c.github.io/picture-in-picture/}\n         * @see [Spec]{@link https://wicg.github.io/document-picture-in-picture/}\n         *\n         * @fires Player#enterpictureinpicture\n         *\n         * @return {Promise}\n         *         A promise with a Picture-in-Picture window.\n         */\n        requestPictureInPicture() {\n            if (this.options_.enableDocumentPictureInPicture && window.documentPictureInPicture) {\n                const pipContainer = document.createElement(this.el().tagName);\n                pipContainer.classList = this.el().classList;\n                pipContainer.classList.add('vjs-pip-container');\n                if (this.posterImage) {\n                    pipContainer.appendChild(this.posterImage.el().cloneNode(true));\n                }\n                if (this.titleBar) {\n                    pipContainer.appendChild(this.titleBar.el().cloneNode(true));\n                }\n                pipContainer.appendChild(createEl('p', {\n                    className: 'vjs-pip-text'\n                }, {}, this.localize('Playing in picture-in-picture')));\n                return window.documentPictureInPicture.requestWindow({\n                    // The aspect ratio won't be correct, Chrome bug https://crbug.com/1407629\n                    width: this.videoWidth(),\n                    height: this.videoHeight()\n                }).then(pipWindow => {\n                    copyStyleSheetsToWindow(pipWindow);\n                    this.el_.parentNode.insertBefore(pipContainer, this.el_);\n                    pipWindow.document.body.appendChild(this.el_);\n                    pipWindow.document.body.classList.add('vjs-pip-window');\n                    this.player_.isInPictureInPicture(true);\n                    this.player_.trigger('enterpictureinpicture');\n\n                    // Listen for the PiP closing event to move the video back.\n                    pipWindow.addEventListener('pagehide', event => {\n                        const pipVideo = event.target.querySelector('.video-js');\n                        pipContainer.parentNode.replaceChild(pipVideo, pipContainer);\n                        this.player_.isInPictureInPicture(false);\n                        this.player_.trigger('leavepictureinpicture');\n                    });\n                    return pipWindow;\n                });\n            }\n            if ('pictureInPictureEnabled' in document && this.disablePictureInPicture() === false) {\n                /**\n                 * This event fires when the player enters picture in picture mode\n                 *\n                 * @event Player#enterpictureinpicture\n                 * @type {Event}\n                 */\n                return this.techGet_('requestPictureInPicture');\n            }\n            return Promise.reject('No PiP mode is available');\n        }\n\n        /**\n         * Exit Picture-in-Picture mode.\n         *\n         * @see [Spec]{@link https://wicg.github.io/picture-in-picture}\n         *\n         * @fires Player#leavepictureinpicture\n         *\n         * @return {Promise}\n         *         A promise.\n         */\n        exitPictureInPicture() {\n            if (window.documentPictureInPicture && window.documentPictureInPicture.window) {\n                // With documentPictureInPicture, Player#leavepictureinpicture is fired in the pagehide handler\n                window.documentPictureInPicture.window.close();\n                return Promise.resolve();\n            }\n            if ('pictureInPictureEnabled' in document) {\n                /**\n                 * This event fires when the player leaves picture in picture mode\n                 *\n                 * @event Player#leavepictureinpicture\n                 * @type {Event}\n                 */\n                return document.exitPictureInPicture();\n            }\n        }\n\n        /**\n         * Called when this Player has focus and a key gets pressed down, or when\n         * any Component of this player receives a key press that it doesn't handle.\n         * This allows player-wide hotkeys (either as defined below, or optionally\n         * by an external function).\n         *\n         * @param {KeyboardEvent} event\n         *        The `keydown` event that caused this function to be called.\n         *\n         * @listens keydown\n         */\n        handleKeyDown(event) {\n            const {\n                userActions\n            } = this.options_;\n\n            // Bail out if hotkeys are not configured.\n            if (!userActions || !userActions.hotkeys) {\n                return;\n            }\n\n            // Function that determines whether or not to exclude an element from\n            // hotkeys handling.\n            const excludeElement = el => {\n                const tagName = el.tagName.toLowerCase();\n\n                // The first and easiest test is for `contenteditable` elements.\n                if (el.isContentEditable) {\n                    return true;\n                }\n\n                // Inputs matching these types will still trigger hotkey handling as\n                // they are not text inputs.\n                const allowedInputTypes = ['button', 'checkbox', 'hidden', 'radio', 'reset', 'submit'];\n                if (tagName === 'input') {\n                    return allowedInputTypes.indexOf(el.type) === -1;\n                }\n\n                // The final test is by tag name. These tags will be excluded entirely.\n                const excludedTags = ['textarea'];\n                return excludedTags.indexOf(tagName) !== -1;\n            };\n\n            // Bail out if the user is focused on an interactive form element.\n            if (excludeElement(this.el_.ownerDocument.activeElement)) {\n                return;\n            }\n            if (typeof userActions.hotkeys === 'function') {\n                userActions.hotkeys.call(this, event);\n            } else {\n                this.handleHotkeys(event);\n            }\n        }\n\n        /**\n         * Called when this Player receives a hotkey keydown event.\n         * Supported player-wide hotkeys are:\n         *\n         *   f          - toggle fullscreen\n         *   m          - toggle mute\n         *   k or Space - toggle play/pause\n         *\n         * @param {Event} event\n         *        The `keydown` event that caused this function to be called.\n         */\n        handleHotkeys(event) {\n            const hotkeys = this.options_.userActions ? this.options_.userActions.hotkeys : {};\n\n            // set fullscreenKey, muteKey, playPauseKey from `hotkeys`, use defaults if not set\n            const {\n                fullscreenKey = keydownEvent => keycode.isEventKey(keydownEvent, 'f'),\n                muteKey = keydownEvent => keycode.isEventKey(keydownEvent, 'm'),\n                playPauseKey = keydownEvent => keycode.isEventKey(keydownEvent, 'k') || keycode.isEventKey(keydownEvent, 'Space')\n            } = hotkeys;\n            if (fullscreenKey.call(this, event)) {\n                event.preventDefault();\n                event.stopPropagation();\n                const FSToggle = Component$1.getComponent('FullscreenToggle');\n                if (document[this.fsApi_.fullscreenEnabled] !== false) {\n                    FSToggle.prototype.handleClick.call(this, event);\n                }\n            } else if (muteKey.call(this, event)) {\n                event.preventDefault();\n                event.stopPropagation();\n                const MuteToggle = Component$1.getComponent('MuteToggle');\n                MuteToggle.prototype.handleClick.call(this, event);\n            } else if (playPauseKey.call(this, event)) {\n                event.preventDefault();\n                event.stopPropagation();\n                const PlayToggle = Component$1.getComponent('PlayToggle');\n                PlayToggle.prototype.handleClick.call(this, event);\n            }\n        }\n\n        /**\n         * Check whether the player can play a given mimetype\n         *\n         * @see https://www.w3.org/TR/2011/WD-html5-20110113/video.html#dom-navigator-canplaytype\n         *\n         * @param {string} type\n         *        The mimetype to check\n         *\n         * @return {string}\n         *         'probably', 'maybe', or '' (empty string)\n         */\n        canPlayType(type) {\n            let can;\n\n            // Loop through each playback technology in the options order\n            for (let i = 0, j = this.options_.techOrder; i < j.length; i++) {\n                const techName = j[i];\n                let tech = Tech.getTech(techName);\n\n                // Support old behavior of techs being registered as components.\n                // Remove once that deprecated behavior is removed.\n                if (!tech) {\n                    tech = Component$1.getComponent(techName);\n                }\n\n                // Check if the current tech is defined before continuing\n                if (!tech) {\n                    log$1.error(`The \"${techName}\" tech is undefined. Skipped browser support check for that tech.`);\n                    continue;\n                }\n\n                // Check if the browser supports this technology\n                if (tech.isSupported()) {\n                    can = tech.canPlayType(type);\n                    if (can) {\n                        return can;\n                    }\n                }\n            }\n            return '';\n        }\n\n        /**\n         * Select source based on tech-order or source-order\n         * Uses source-order selection if `options.sourceOrder` is truthy. Otherwise,\n         * defaults to tech-order selection\n         *\n         * @param {Array} sources\n         *        The sources for a media asset\n         *\n         * @return {Object|boolean}\n         *         Object of source and tech order or false\n         */\n        selectSource(sources) {\n            // Get only the techs specified in `techOrder` that exist and are supported by the\n            // current platform\n            const techs = this.options_.techOrder.map(techName => {\n                return [techName, Tech.getTech(techName)];\n            }).filter(([techName, tech]) => {\n                // Check if the current tech is defined before continuing\n                if (tech) {\n                    // Check if the browser supports this technology\n                    return tech.isSupported();\n                }\n                log$1.error(`The \"${techName}\" tech is undefined. Skipped browser support check for that tech.`);\n                return false;\n            });\n\n            // Iterate over each `innerArray` element once per `outerArray` element and execute\n            // `tester` with both. If `tester` returns a non-falsy value, exit early and return\n            // that value.\n            const findFirstPassingTechSourcePair = function (outerArray, innerArray, tester) {\n                let found;\n                outerArray.some(outerChoice => {\n                    return innerArray.some(innerChoice => {\n                        found = tester(outerChoice, innerChoice);\n                        if (found) {\n                            return true;\n                        }\n                    });\n                });\n                return found;\n            };\n            let foundSourceAndTech;\n            const flip = fn => (a, b) => fn(b, a);\n            const finder = ([techName, tech], source) => {\n                if (tech.canPlaySource(source, this.options_[techName.toLowerCase()])) {\n                    return {\n                        source,\n                        tech: techName\n                    };\n                }\n            };\n\n            // Depending on the truthiness of `options.sourceOrder`, we swap the order of techs and sources\n            // to select from them based on their priority.\n            if (this.options_.sourceOrder) {\n                // Source-first ordering\n                foundSourceAndTech = findFirstPassingTechSourcePair(sources, techs, flip(finder));\n            } else {\n                // Tech-first ordering\n                foundSourceAndTech = findFirstPassingTechSourcePair(techs, sources, finder);\n            }\n            return foundSourceAndTech || false;\n        }\n\n        /**\n         * Executes source setting and getting logic\n         *\n         * @param {Tech~SourceObject|Tech~SourceObject[]|string} [source]\n         *        A SourceObject, an array of SourceObjects, or a string referencing\n         *        a URL to a media source. It is _highly recommended_ that an object\n         *        or array of objects is used here, so that source selection\n         *        algorithms can take the `type` into account.\n         *\n         *        If not provided, this method acts as a getter.\n         * @param {boolean} [isRetry]\n         *        Indicates whether this is being called internally as a result of a retry\n         *\n         * @return {string|undefined}\n         *         If the `source` argument is missing, returns the current source\n         *         URL. Otherwise, returns nothing/undefined.\n         */\n        handleSrc_(source, isRetry) {\n            // getter usage\n            if (typeof source === 'undefined') {\n                return this.cache_.src || '';\n            }\n\n            // Reset retry behavior for new source\n            if (this.resetRetryOnError_) {\n                this.resetRetryOnError_();\n            }\n\n            // filter out invalid sources and turn our source into\n            // an array of source objects\n            const sources = filterSource(source);\n\n            // if a source was passed in then it is invalid because\n            // it was filtered to a zero length Array. So we have to\n            // show an error\n            if (!sources.length) {\n                this.setTimeout(function () {\n                    this.error({\n                        code: 4,\n                        message: this.options_.notSupportedMessage\n                    });\n                }, 0);\n                return;\n            }\n\n            // initial sources\n            this.changingSrc_ = true;\n\n            // Only update the cached source list if we are not retrying a new source after error,\n            // since in that case we want to include the failed source(s) in the cache\n            if (!isRetry) {\n                this.cache_.sources = sources;\n            }\n            this.updateSourceCaches_(sources[0]);\n\n            // middlewareSource is the source after it has been changed by middleware\n            setSource(this, sources[0], (middlewareSource, mws) => {\n                this.middleware_ = mws;\n\n                // since sourceSet is async we have to update the cache again after we select a source since\n                // the source that is selected could be out of order from the cache update above this callback.\n                if (!isRetry) {\n                    this.cache_.sources = sources;\n                }\n                this.updateSourceCaches_(middlewareSource);\n                const err = this.src_(middlewareSource);\n                if (err) {\n                    if (sources.length > 1) {\n                        return this.handleSrc_(sources.slice(1));\n                    }\n                    this.changingSrc_ = false;\n\n                    // We need to wrap this in a timeout to give folks a chance to add error event handlers\n                    this.setTimeout(function () {\n                        this.error({\n                            code: 4,\n                            message: this.options_.notSupportedMessage\n                        });\n                    }, 0);\n\n                    // we could not find an appropriate tech, but let's still notify the delegate that this is it\n                    // this needs a better comment about why this is needed\n                    this.triggerReady();\n                    return;\n                }\n                setTech(mws, this.tech_);\n            });\n\n            // Try another available source if this one fails before playback.\n            if (sources.length > 1) {\n                const retry = () => {\n                    // Remove the error modal\n                    this.error(null);\n                    this.handleSrc_(sources.slice(1), true);\n                };\n                const stopListeningForErrors = () => {\n                    this.off('error', retry);\n                };\n                this.one('error', retry);\n                this.one('playing', stopListeningForErrors);\n                this.resetRetryOnError_ = () => {\n                    this.off('error', retry);\n                    this.off('playing', stopListeningForErrors);\n                };\n            }\n        }\n\n        /**\n         * Get or set the video source.\n         *\n         * @param {Tech~SourceObject|Tech~SourceObject[]|string} [source]\n         *        A SourceObject, an array of SourceObjects, or a string referencing\n         *        a URL to a media source. It is _highly recommended_ that an object\n         *        or array of objects is used here, so that source selection\n         *        algorithms can take the `type` into account.\n         *\n         *        If not provided, this method acts as a getter.\n         *\n         * @return {string|undefined}\n         *         If the `source` argument is missing, returns the current source\n         *         URL. Otherwise, returns nothing/undefined.\n         */\n        src(source) {\n            return this.handleSrc_(source, false);\n        }\n\n        /**\n         * Set the source object on the tech, returns a boolean that indicates whether\n         * there is a tech that can play the source or not\n         *\n         * @param {Tech~SourceObject} source\n         *        The source object to set on the Tech\n         *\n         * @return {boolean}\n         *         - True if there is no Tech to playback this source\n         *         - False otherwise\n         *\n         * @private\n         */\n        src_(source) {\n            const sourceTech = this.selectSource([source]);\n            if (!sourceTech) {\n                return true;\n            }\n            if (!titleCaseEquals(sourceTech.tech, this.techName_)) {\n                this.changingSrc_ = true;\n                // load this technology with the chosen source\n                this.loadTech_(sourceTech.tech, sourceTech.source);\n                this.tech_.ready(() => {\n                    this.changingSrc_ = false;\n                });\n                return false;\n            }\n\n            // wait until the tech is ready to set the source\n            // and set it synchronously if possible (#2326)\n            this.ready(function () {\n                // The setSource tech method was added with source handlers\n                // so older techs won't support it\n                // We need to check the direct prototype for the case where subclasses\n                // of the tech do not support source handlers\n                if (this.tech_.constructor.prototype.hasOwnProperty('setSource')) {\n                    this.techCall_('setSource', source);\n                } else {\n                    this.techCall_('src', source.src);\n                }\n                this.changingSrc_ = false;\n            }, true);\n            return false;\n        }\n\n        /**\n         * Begin loading the src data.\n         */\n        load() {\n            // Workaround to use the load method with the VHS.\n            // Does not cover the case when the load method is called directly from the mediaElement.\n            if (this.tech_ && this.tech_.vhs) {\n                this.src(this.currentSource());\n                return;\n            }\n            this.techCall_('load');\n        }\n\n        /**\n         * Reset the player. Loads the first tech in the techOrder,\n         * removes all the text tracks in the existing `tech`,\n         * and calls `reset` on the `tech`.\n         */\n        reset() {\n            if (this.paused()) {\n                this.doReset_();\n            } else {\n                const playPromise = this.play();\n                silencePromise(playPromise.then(() => this.doReset_()));\n            }\n        }\n        doReset_() {\n            if (this.tech_) {\n                this.tech_.clearTracks('text');\n            }\n            this.removeClass('vjs-playing');\n            this.addClass('vjs-paused');\n            this.resetCache_();\n            this.poster('');\n            this.loadTech_(this.options_.techOrder[0], null);\n            this.techCall_('reset');\n            this.resetControlBarUI_();\n            this.error(null);\n            if (this.titleBar) {\n                this.titleBar.update({\n                    title: undefined,\n                    description: undefined\n                });\n            }\n            if (isEvented(this)) {\n                this.trigger('playerreset');\n            }\n        }\n\n        /**\n         * Reset Control Bar's UI by calling sub-methods that reset\n         * all of Control Bar's components\n         */\n        resetControlBarUI_() {\n            this.resetProgressBar_();\n            this.resetPlaybackRate_();\n            this.resetVolumeBar_();\n        }\n\n        /**\n         * Reset tech's progress so progress bar is reset in the UI\n         */\n        resetProgressBar_() {\n            this.currentTime(0);\n            const {\n                currentTimeDisplay,\n                durationDisplay,\n                progressControl,\n                remainingTimeDisplay\n            } = this.controlBar || {};\n            const {\n                seekBar\n            } = progressControl || {};\n            if (currentTimeDisplay) {\n                currentTimeDisplay.updateContent();\n            }\n            if (durationDisplay) {\n                durationDisplay.updateContent();\n            }\n            if (remainingTimeDisplay) {\n                remainingTimeDisplay.updateContent();\n            }\n            if (seekBar) {\n                seekBar.update();\n                if (seekBar.loadProgressBar) {\n                    seekBar.loadProgressBar.update();\n                }\n            }\n        }\n\n        /**\n         * Reset Playback ratio\n         */\n        resetPlaybackRate_() {\n            this.playbackRate(this.defaultPlaybackRate());\n            this.handleTechRateChange_();\n        }\n\n        /**\n         * Reset Volume bar\n         */\n        resetVolumeBar_() {\n            this.volume(1.0);\n            this.trigger('volumechange');\n        }\n\n        /**\n         * Returns all of the current source objects.\n         *\n         * @return {Tech~SourceObject[]}\n         *         The current source objects\n         */\n        currentSources() {\n            const source = this.currentSource();\n            const sources = [];\n\n            // assume `{}` or `{ src }`\n            if (Object.keys(source).length !== 0) {\n                sources.push(source);\n            }\n            return this.cache_.sources || sources;\n        }\n\n        /**\n         * Returns the current source object.\n         *\n         * @return {Tech~SourceObject}\n         *         The current source object\n         */\n        currentSource() {\n            return this.cache_.source || {};\n        }\n\n        /**\n         * Returns the fully qualified URL of the current source value e.g. http://mysite.com/video.mp4\n         * Can be used in conjunction with `currentType` to assist in rebuilding the current source object.\n         *\n         * @return {string}\n         *         The current source\n         */\n        currentSrc() {\n            return this.currentSource() && this.currentSource().src || '';\n        }\n\n        /**\n         * Get the current source type e.g. video/mp4\n         * This can allow you rebuild the current source object so that you could load the same\n         * source and tech later\n         *\n         * @return {string}\n         *         The source MIME type\n         */\n        currentType() {\n            return this.currentSource() && this.currentSource().type || '';\n        }\n\n        /**\n         * Get or set the preload attribute\n         *\n         * @param {'none'|'auto'|'metadata'} [value]\n         *        Preload mode to pass to tech\n         *\n         * @return {string|undefined}\n         *         - The preload attribute value when getting\n         *         - Nothing when setting\n         */\n        preload(value) {\n            if (value !== undefined) {\n                this.techCall_('setPreload', value);\n                this.options_.preload = value;\n                return;\n            }\n            return this.techGet_('preload');\n        }\n\n        /**\n         * Get or set the autoplay option. When this is a boolean it will\n         * modify the attribute on the tech. When this is a string the attribute on\n         * the tech will be removed and `Player` will handle autoplay on loadstarts.\n         *\n         * @param {boolean|'play'|'muted'|'any'} [value]\n         *        - true: autoplay using the browser behavior\n         *        - false: do not autoplay\n         *        - 'play': call play() on every loadstart\n         *        - 'muted': call muted() then play() on every loadstart\n         *        - 'any': call play() on every loadstart. if that fails call muted() then play().\n         *        - *: values other than those listed here will be set `autoplay` to true\n         *\n         * @return {boolean|string|undefined}\n         *         - The current value of autoplay when getting\n         *         - Nothing when setting\n         */\n        autoplay(value) {\n            // getter usage\n            if (value === undefined) {\n                return this.options_.autoplay || false;\n            }\n            let techAutoplay;\n\n            // if the value is a valid string set it to that, or normalize `true` to 'play', if need be\n            if (typeof value === 'string' && /(any|play|muted)/.test(value) || value === true && this.options_.normalizeAutoplay) {\n                this.options_.autoplay = value;\n                this.manualAutoplay_(typeof value === 'string' ? value : 'play');\n                techAutoplay = false;\n\n                // any falsy value sets autoplay to false in the browser,\n                // lets do the same\n            } else if (!value) {\n                this.options_.autoplay = false;\n\n                // any other value (ie truthy) sets autoplay to true\n            } else {\n                this.options_.autoplay = true;\n            }\n            techAutoplay = typeof techAutoplay === 'undefined' ? this.options_.autoplay : techAutoplay;\n\n            // if we don't have a tech then we do not queue up\n            // a setAutoplay call on tech ready. We do this because the\n            // autoplay option will be passed in the constructor and we\n            // do not need to set it twice\n            if (this.tech_) {\n                this.techCall_('setAutoplay', techAutoplay);\n            }\n        }\n\n        /**\n         * Set or unset the playsinline attribute.\n         * Playsinline tells the browser that non-fullscreen playback is preferred.\n         *\n         * @param {boolean} [value]\n         *        - true means that we should try to play inline by default\n         *        - false means that we should use the browser's default playback mode,\n         *          which in most cases is inline. iOS Safari is a notable exception\n         *          and plays fullscreen by default.\n         *\n         * @return {string|undefined}\n         *         - the current value of playsinline\n         *         - Nothing when setting\n         *\n         * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}\n         */\n        playsinline(value) {\n            if (value !== undefined) {\n                this.techCall_('setPlaysinline', value);\n                this.options_.playsinline = value;\n            }\n            return this.techGet_('playsinline');\n        }\n\n        /**\n         * Get or set the loop attribute on the video element.\n         *\n         * @param {boolean} [value]\n         *        - true means that we should loop the video\n         *        - false means that we should not loop the video\n         *\n         * @return {boolean|undefined}\n         *         - The current value of loop when getting\n         *         - Nothing when setting\n         */\n        loop(value) {\n            if (value !== undefined) {\n                this.techCall_('setLoop', value);\n                this.options_.loop = value;\n                return;\n            }\n            return this.techGet_('loop');\n        }\n\n        /**\n         * Get or set the poster image source url\n         *\n         * @fires Player#posterchange\n         *\n         * @param {string} [src]\n         *        Poster image source URL\n         *\n         * @return {string|undefined}\n         *         - The current value of poster when getting\n         *         - Nothing when setting\n         */\n        poster(src) {\n            if (src === undefined) {\n                return this.poster_;\n            }\n\n            // The correct way to remove a poster is to set as an empty string\n            // other falsey values will throw errors\n            if (!src) {\n                src = '';\n            }\n            if (src === this.poster_) {\n                return;\n            }\n\n            // update the internal poster variable\n            this.poster_ = src;\n\n            // update the tech's poster\n            this.techCall_('setPoster', src);\n            this.isPosterFromTech_ = false;\n\n            // alert components that the poster has been set\n            /**\n             * This event fires when the poster image is changed on the player.\n             *\n             * @event Player#posterchange\n             * @type {Event}\n             */\n            this.trigger('posterchange');\n        }\n\n        /**\n         * Some techs (e.g. YouTube) can provide a poster source in an\n         * asynchronous way. We want the poster component to use this\n         * poster source so that it covers up the tech's controls.\n         * (YouTube's play button). However we only want to use this\n         * source if the player user hasn't set a poster through\n         * the normal APIs.\n         *\n         * @fires Player#posterchange\n         * @listens Tech#posterchange\n         * @private\n         */\n        handleTechPosterChange_() {\n            if ((!this.poster_ || this.options_.techCanOverridePoster) && this.tech_ && this.tech_.poster) {\n                const newPoster = this.tech_.poster() || '';\n                if (newPoster !== this.poster_) {\n                    this.poster_ = newPoster;\n                    this.isPosterFromTech_ = true;\n\n                    // Let components know the poster has changed\n                    this.trigger('posterchange');\n                }\n            }\n        }\n\n        /**\n         * Get or set whether or not the controls are showing.\n         *\n         * @fires Player#controlsenabled\n         *\n         * @param {boolean} [bool]\n         *        - true to turn controls on\n         *        - false to turn controls off\n         *\n         * @return {boolean|undefined}\n         *         - The current value of controls when getting\n         *         - Nothing when setting\n         */\n        controls(bool) {\n            if (bool === undefined) {\n                return !!this.controls_;\n            }\n            bool = !!bool;\n\n            // Don't trigger a change event unless it actually changed\n            if (this.controls_ === bool) {\n                return;\n            }\n            this.controls_ = bool;\n            if (this.usingNativeControls()) {\n                this.techCall_('setControls', bool);\n            }\n            if (this.controls_) {\n                this.removeClass('vjs-controls-disabled');\n                this.addClass('vjs-controls-enabled');\n                /**\n                 * @event Player#controlsenabled\n                 * @type {Event}\n                 */\n                this.trigger('controlsenabled');\n                if (!this.usingNativeControls()) {\n                    this.addTechControlsListeners_();\n                }\n            } else {\n                this.removeClass('vjs-controls-enabled');\n                this.addClass('vjs-controls-disabled');\n                /**\n                 * @event Player#controlsdisabled\n                 * @type {Event}\n                 */\n                this.trigger('controlsdisabled');\n                if (!this.usingNativeControls()) {\n                    this.removeTechControlsListeners_();\n                }\n            }\n        }\n\n        /**\n         * Toggle native controls on/off. Native controls are the controls built into\n         * devices (e.g. default iPhone controls) or other techs\n         * (e.g. Vimeo Controls)\n         * **This should only be set by the current tech, because only the tech knows\n         * if it can support native controls**\n         *\n         * @fires Player#usingnativecontrols\n         * @fires Player#usingcustomcontrols\n         *\n         * @param {boolean} [bool]\n         *        - true to turn native controls on\n         *        - false to turn native controls off\n         *\n         * @return {boolean|undefined}\n         *         - The current value of native controls when getting\n         *         - Nothing when setting\n         */\n        usingNativeControls(bool) {\n            if (bool === undefined) {\n                return !!this.usingNativeControls_;\n            }\n            bool = !!bool;\n\n            // Don't trigger a change event unless it actually changed\n            if (this.usingNativeControls_ === bool) {\n                return;\n            }\n            this.usingNativeControls_ = bool;\n            if (this.usingNativeControls_) {\n                this.addClass('vjs-using-native-controls');\n\n                /**\n                 * player is using the native device controls\n                 *\n                 * @event Player#usingnativecontrols\n                 * @type {Event}\n                 */\n                this.trigger('usingnativecontrols');\n            } else {\n                this.removeClass('vjs-using-native-controls');\n\n                /**\n                 * player is using the custom HTML controls\n                 *\n                 * @event Player#usingcustomcontrols\n                 * @type {Event}\n                 */\n                this.trigger('usingcustomcontrols');\n            }\n        }\n\n        /**\n         * Set or get the current MediaError\n         *\n         * @fires Player#error\n         *\n         * @param  {MediaError|string|number} [err]\n         *         A MediaError or a string/number to be turned\n         *         into a MediaError\n         *\n         * @return {MediaError|null|undefined}\n         *         - The current MediaError when getting (or null)\n         *         - Nothing when setting\n         */\n        error(err) {\n            if (err === undefined) {\n                return this.error_ || null;\n            }\n\n            // allow hooks to modify error object\n            hooks('beforeerror').forEach(hookFunction => {\n                const newErr = hookFunction(this, err);\n                if (!(isObject$1(newErr) && !Array.isArray(newErr) || typeof newErr === 'string' || typeof newErr === 'number' || newErr === null)) {\n                    this.log.error('please return a value that MediaError expects in beforeerror hooks');\n                    return;\n                }\n                err = newErr;\n            });\n\n            // Suppress the first error message for no compatible source until\n            // user interaction\n            if (this.options_.suppressNotSupportedError && err && err.code === 4) {\n                const triggerSuppressedError = function () {\n                    this.error(err);\n                };\n                this.options_.suppressNotSupportedError = false;\n                this.any(['click', 'touchstart'], triggerSuppressedError);\n                this.one('loadstart', function () {\n                    this.off(['click', 'touchstart'], triggerSuppressedError);\n                });\n                return;\n            }\n\n            // restoring to default\n            if (err === null) {\n                this.error_ = null;\n                this.removeClass('vjs-error');\n                if (this.errorDisplay) {\n                    this.errorDisplay.close();\n                }\n                return;\n            }\n            this.error_ = new MediaError(err);\n\n            // add the vjs-error classname to the player\n            this.addClass('vjs-error');\n\n            // log the name of the error type and any message\n            // IE11 logs \"[object object]\" and required you to expand message to see error object\n            log$1.error(`(CODE:${this.error_.code} ${MediaError.errorTypes[this.error_.code]})`, this.error_.message, this.error_);\n\n            /**\n             * @event Player#error\n             * @type {Event}\n             */\n            this.trigger('error');\n\n            // notify hooks of the per player error\n            hooks('error').forEach(hookFunction => hookFunction(this, this.error_));\n            return;\n        }\n\n        /**\n         * Report user activity\n         *\n         * @param {Object} event\n         *        Event object\n         */\n        reportUserActivity(event) {\n            this.userActivity_ = true;\n        }\n\n        /**\n         * Get/set if user is active\n         *\n         * @fires Player#useractive\n         * @fires Player#userinactive\n         *\n         * @param {boolean} [bool]\n         *        - true if the user is active\n         *        - false if the user is inactive\n         *\n         * @return {boolean|undefined}\n         *         - The current value of userActive when getting\n         *         - Nothing when setting\n         */\n        userActive(bool) {\n            if (bool === undefined) {\n                return this.userActive_;\n            }\n            bool = !!bool;\n            if (bool === this.userActive_) {\n                return;\n            }\n            this.userActive_ = bool;\n            if (this.userActive_) {\n                this.userActivity_ = true;\n                this.removeClass('vjs-user-inactive');\n                this.addClass('vjs-user-active');\n                /**\n                 * @event Player#useractive\n                 * @type {Event}\n                 */\n                this.trigger('useractive');\n                return;\n            }\n\n            // Chrome/Safari/IE have bugs where when you change the cursor it can\n            // trigger a mousemove event. This causes an issue when you're hiding\n            // the cursor when the user is inactive, and a mousemove signals user\n            // activity. Making it impossible to go into inactive mode. Specifically\n            // this happens in fullscreen when we really need to hide the cursor.\n            //\n            // When this gets resolved in ALL browsers it can be removed\n            // https://code.google.com/p/chromium/issues/detail?id=103041\n            if (this.tech_) {\n                this.tech_.one('mousemove', function (e) {\n                    e.stopPropagation();\n                    e.preventDefault();\n                });\n            }\n            this.userActivity_ = false;\n            this.removeClass('vjs-user-active');\n            this.addClass('vjs-user-inactive');\n            /**\n             * @event Player#userinactive\n             * @type {Event}\n             */\n            this.trigger('userinactive');\n        }\n\n        /**\n         * Listen for user activity based on timeout value\n         *\n         * @private\n         */\n        listenForUserActivity_() {\n            let mouseInProgress;\n            let lastMoveX;\n            let lastMoveY;\n            const handleActivity = bind_(this, this.reportUserActivity);\n            const handleMouseMove = function (e) {\n                // #1068 - Prevent mousemove spamming\n                // Chrome Bug: https://code.google.com/p/chromium/issues/detail?id=366970\n                if (e.screenX !== lastMoveX || e.screenY !== lastMoveY) {\n                    lastMoveX = e.screenX;\n                    lastMoveY = e.screenY;\n                    handleActivity();\n                }\n            };\n            const handleMouseDown = function () {\n                handleActivity();\n                // For as long as the they are touching the device or have their mouse down,\n                // we consider them active even if they're not moving their finger or mouse.\n                // So we want to continue to update that they are active\n                this.clearInterval(mouseInProgress);\n                // Setting userActivity=true now and setting the interval to the same time\n                // as the activityCheck interval (250) should ensure we never miss the\n                // next activityCheck\n                mouseInProgress = this.setInterval(handleActivity, 250);\n            };\n            const handleMouseUpAndMouseLeave = function (event) {\n                handleActivity();\n                // Stop the interval that maintains activity if the mouse/touch is down\n                this.clearInterval(mouseInProgress);\n            };\n\n            // Any mouse movement will be considered user activity\n            this.on('mousedown', handleMouseDown);\n            this.on('mousemove', handleMouseMove);\n            this.on('mouseup', handleMouseUpAndMouseLeave);\n            this.on('mouseleave', handleMouseUpAndMouseLeave);\n            const controlBar = this.getChild('controlBar');\n\n            // Fixes bug on Android & iOS where when tapping progressBar (when control bar is displayed)\n            // controlBar would no longer be hidden by default timeout.\n            if (controlBar && !IS_IOS && !IS_ANDROID) {\n                controlBar.on('mouseenter', function (event) {\n                    if (this.player().options_.inactivityTimeout !== 0) {\n                        this.player().cache_.inactivityTimeout = this.player().options_.inactivityTimeout;\n                    }\n                    this.player().options_.inactivityTimeout = 0;\n                });\n                controlBar.on('mouseleave', function (event) {\n                    this.player().options_.inactivityTimeout = this.player().cache_.inactivityTimeout;\n                });\n            }\n\n            // Listen for keyboard navigation\n            // Shouldn't need to use inProgress interval because of key repeat\n            this.on('keydown', handleActivity);\n            this.on('keyup', handleActivity);\n\n            // Run an interval every 250 milliseconds instead of stuffing everything into\n            // the mousemove/touchmove function itself, to prevent performance degradation.\n            // `this.reportUserActivity` simply sets this.userActivity_ to true, which\n            // then gets picked up by this loop\n            // http://ejohn.org/blog/learning-from-twitter/\n            let inactivityTimeout;\n\n            /** @this Player */\n            const activityCheck = function () {\n                // Check to see if mouse/touch activity has happened\n                if (!this.userActivity_) {\n                    return;\n                }\n\n                // Reset the activity tracker\n                this.userActivity_ = false;\n\n                // If the user state was inactive, set the state to active\n                this.userActive(true);\n\n                // Clear any existing inactivity timeout to start the timer over\n                this.clearTimeout(inactivityTimeout);\n                const timeout = this.options_.inactivityTimeout;\n                if (timeout <= 0) {\n                    return;\n                }\n\n                // In <timeout> milliseconds, if no more activity has occurred the\n                // user will be considered inactive\n                inactivityTimeout = this.setTimeout(function () {\n                    // Protect against the case where the inactivityTimeout can trigger just\n                    // before the next user activity is picked up by the activity check loop\n                    // causing a flicker\n                    if (!this.userActivity_) {\n                        this.userActive(false);\n                    }\n                }, timeout);\n            };\n            this.setInterval(activityCheck, 250);\n        }\n\n        /**\n         * Gets or sets the current playback rate. A playback rate of\n         * 1.0 represents normal speed and 0.5 would indicate half-speed\n         * playback, for instance.\n         *\n         * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-playbackrate\n         *\n         * @param {number} [rate]\n         *       New playback rate to set.\n         *\n         * @return {number|undefined}\n         *         - The current playback rate when getting or 1.0\n         *         - Nothing when setting\n         */\n        playbackRate(rate) {\n            if (rate !== undefined) {\n                // NOTE: this.cache_.lastPlaybackRate is set from the tech handler\n                // that is registered above\n                this.techCall_('setPlaybackRate', rate);\n                return;\n            }\n            if (this.tech_ && this.tech_.featuresPlaybackRate) {\n                return this.cache_.lastPlaybackRate || this.techGet_('playbackRate');\n            }\n            return 1.0;\n        }\n\n        /**\n         * Gets or sets the current default playback rate. A default playback rate of\n         * 1.0 represents normal speed and 0.5 would indicate half-speed playback, for instance.\n         * defaultPlaybackRate will only represent what the initial playbackRate of a video was, not\n         * not the current playbackRate.\n         *\n         * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-defaultplaybackrate\n         *\n         * @param {number} [rate]\n         *       New default playback rate to set.\n         *\n         * @return {number|undefined}\n         *         - The default playback rate when getting or 1.0\n         *         - Nothing when setting\n         */\n        defaultPlaybackRate(rate) {\n            if (rate !== undefined) {\n                return this.techCall_('setDefaultPlaybackRate', rate);\n            }\n            if (this.tech_ && this.tech_.featuresPlaybackRate) {\n                return this.techGet_('defaultPlaybackRate');\n            }\n            return 1.0;\n        }\n\n        /**\n         * Gets or sets the audio flag\n         *\n         * @param {boolean} [bool]\n         *        - true signals that this is an audio player\n         *        - false signals that this is not an audio player\n         *\n         * @return {boolean|undefined}\n         *         - The current value of isAudio when getting\n         *         - Nothing when setting\n         */\n        isAudio(bool) {\n            if (bool !== undefined) {\n                this.isAudio_ = !!bool;\n                return;\n            }\n            return !!this.isAudio_;\n        }\n        enableAudioOnlyUI_() {\n            // Update styling immediately to show the control bar so we can get its height\n            this.addClass('vjs-audio-only-mode');\n            const playerChildren = this.children();\n            const controlBar = this.getChild('ControlBar');\n            const controlBarHeight = controlBar && controlBar.currentHeight();\n\n            // Hide all player components except the control bar. Control bar components\n            // needed only for video are hidden with CSS\n            playerChildren.forEach(child => {\n                if (child === controlBar) {\n                    return;\n                }\n                if (child.el_ && !child.hasClass('vjs-hidden')) {\n                    child.hide();\n                    this.audioOnlyCache_.hiddenChildren.push(child);\n                }\n            });\n            this.audioOnlyCache_.playerHeight = this.currentHeight();\n\n            // Set the player height the same as the control bar\n            this.height(controlBarHeight);\n            this.trigger('audioonlymodechange');\n        }\n        disableAudioOnlyUI_() {\n            this.removeClass('vjs-audio-only-mode');\n\n            // Show player components that were previously hidden\n            this.audioOnlyCache_.hiddenChildren.forEach(child => child.show());\n\n            // Reset player height\n            this.height(this.audioOnlyCache_.playerHeight);\n            this.trigger('audioonlymodechange');\n        }\n\n        /**\n         * Get the current audioOnlyMode state or set audioOnlyMode to true or false.\n         *\n         * Setting this to `true` will hide all player components except the control bar,\n         * as well as control bar components needed only for video.\n         *\n         * @param {boolean} [value]\n         *         The value to set audioOnlyMode to.\n         *\n         * @return {Promise|boolean}\n         *        A Promise is returned when setting the state, and a boolean when getting\n         *        the present state\n         */\n        audioOnlyMode(value) {\n            if (typeof value !== 'boolean' || value === this.audioOnlyMode_) {\n                return this.audioOnlyMode_;\n            }\n            this.audioOnlyMode_ = value;\n\n            // Enable Audio Only Mode\n            if (value) {\n                const exitPromises = [];\n\n                // Fullscreen and PiP are not supported in audioOnlyMode, so exit if we need to.\n                if (this.isInPictureInPicture()) {\n                    exitPromises.push(this.exitPictureInPicture());\n                }\n                if (this.isFullscreen()) {\n                    exitPromises.push(this.exitFullscreen());\n                }\n                if (this.audioPosterMode()) {\n                    exitPromises.push(this.audioPosterMode(false));\n                }\n                return Promise.all(exitPromises).then(() => this.enableAudioOnlyUI_());\n            }\n\n            // Disable Audio Only Mode\n            return Promise.resolve().then(() => this.disableAudioOnlyUI_());\n        }\n        enablePosterModeUI_() {\n            // Hide the video element and show the poster image to enable posterModeUI\n            const tech = this.tech_ && this.tech_;\n            tech.hide();\n            this.addClass('vjs-audio-poster-mode');\n            this.trigger('audiopostermodechange');\n        }\n        disablePosterModeUI_() {\n            // Show the video element and hide the poster image to disable posterModeUI\n            const tech = this.tech_ && this.tech_;\n            tech.show();\n            this.removeClass('vjs-audio-poster-mode');\n            this.trigger('audiopostermodechange');\n        }\n\n        /**\n         * Get the current audioPosterMode state or set audioPosterMode to true or false\n         *\n         * @param {boolean} [value]\n         *         The value to set audioPosterMode to.\n         *\n         * @return {Promise|boolean}\n         *         A Promise is returned when setting the state, and a boolean when getting\n         *        the present state\n         */\n        audioPosterMode(value) {\n            if (typeof value !== 'boolean' || value === this.audioPosterMode_) {\n                return this.audioPosterMode_;\n            }\n            this.audioPosterMode_ = value;\n            if (value) {\n                if (this.audioOnlyMode()) {\n                    const audioOnlyModePromise = this.audioOnlyMode(false);\n                    return audioOnlyModePromise.then(() => {\n                        // enable audio poster mode after audio only mode is disabled\n                        this.enablePosterModeUI_();\n                    });\n                }\n                return Promise.resolve().then(() => {\n                    // enable audio poster mode\n                    this.enablePosterModeUI_();\n                });\n            }\n            return Promise.resolve().then(() => {\n                // disable audio poster mode\n                this.disablePosterModeUI_();\n            });\n        }\n\n        /**\n         * A helper method for adding a {@link TextTrack} to our\n         * {@link TextTrackList}.\n         *\n         * In addition to the W3C settings we allow adding additional info through options.\n         *\n         * @see http://www.w3.org/html/wg/drafts/html/master/embedded-content-0.html#dom-media-addtexttrack\n         *\n         * @param {string} [kind]\n         *        the kind of TextTrack you are adding\n         *\n         * @param {string} [label]\n         *        the label to give the TextTrack label\n         *\n         * @param {string} [language]\n         *        the language to set on the TextTrack\n         *\n         * @return {TextTrack|undefined}\n         *         the TextTrack that was added or undefined\n         *         if there is no tech\n         */\n        addTextTrack(kind, label, language) {\n            if (this.tech_) {\n                return this.tech_.addTextTrack(kind, label, language);\n            }\n        }\n\n        /**\n         * Create a remote {@link TextTrack} and an {@link HTMLTrackElement}.\n         *\n         * @param {Object} options\n         *        Options to pass to {@link HTMLTrackElement} during creation. See\n         *        {@link HTMLTrackElement} for object properties that you should use.\n         *\n         * @param {boolean} [manualCleanup=false] if set to true, the TextTrack will not be removed\n         *                                        from the TextTrackList and HtmlTrackElementList\n         *                                        after a source change\n         *\n         * @return { import('./tracks/html-track-element').default }\n         *         the HTMLTrackElement that was created and added\n         *         to the HtmlTrackElementList and the remote\n         *         TextTrackList\n         *\n         */\n        addRemoteTextTrack(options, manualCleanup) {\n            if (this.tech_) {\n                return this.tech_.addRemoteTextTrack(options, manualCleanup);\n            }\n        }\n\n        /**\n         * Remove a remote {@link TextTrack} from the respective\n         * {@link TextTrackList} and {@link HtmlTrackElementList}.\n         *\n         * @param {Object} track\n         *        Remote {@link TextTrack} to remove\n         *\n         * @return {undefined}\n         *         does not return anything\n         */\n        removeRemoteTextTrack(obj = {}) {\n            let {\n                track\n            } = obj;\n            if (!track) {\n                track = obj;\n            }\n\n            // destructure the input into an object with a track argument, defaulting to arguments[0]\n            // default the whole argument to an empty object if nothing was passed in\n\n            if (this.tech_) {\n                return this.tech_.removeRemoteTextTrack(track);\n            }\n        }\n\n        /**\n         * Gets available media playback quality metrics as specified by the W3C's Media\n         * Playback Quality API.\n         *\n         * @see [Spec]{@link https://wicg.github.io/media-playback-quality}\n         *\n         * @return {Object|undefined}\n         *         An object with supported media playback quality metrics or undefined if there\n         *         is no tech or the tech does not support it.\n         */\n        getVideoPlaybackQuality() {\n            return this.techGet_('getVideoPlaybackQuality');\n        }\n\n        /**\n         * Get video width\n         *\n         * @return {number}\n         *         current video width\n         */\n        videoWidth() {\n            return this.tech_ && this.tech_.videoWidth && this.tech_.videoWidth() || 0;\n        }\n\n        /**\n         * Get video height\n         *\n         * @return {number}\n         *         current video height\n         */\n        videoHeight() {\n            return this.tech_ && this.tech_.videoHeight && this.tech_.videoHeight() || 0;\n        }\n\n        /**\n         * Set or get the player's language code.\n         *\n         * Changing the language will trigger\n         * [languagechange]{@link Player#event:languagechange}\n         * which Components can use to update control text.\n         * ClickableComponent will update its control text by default on\n         * [languagechange]{@link Player#event:languagechange}.\n         *\n         * @fires Player#languagechange\n         *\n         * @param {string} [code]\n         *        the language code to set the player to\n         *\n         * @return {string|undefined}\n         *         - The current language code when getting\n         *         - Nothing when setting\n         */\n        language(code) {\n            if (code === undefined) {\n                return this.language_;\n            }\n            if (this.language_ !== String(code).toLowerCase()) {\n                this.language_ = String(code).toLowerCase();\n\n                // during first init, it's possible some things won't be evented\n                if (isEvented(this)) {\n                    /**\n                     * fires when the player language change\n                     *\n                     * @event Player#languagechange\n                     * @type {Event}\n                     */\n                    this.trigger('languagechange');\n                }\n            }\n        }\n\n        /**\n         * Get the player's language dictionary\n         * Merge every time, because a newly added plugin might call videojs.addLanguage() at any time\n         * Languages specified directly in the player options have precedence\n         *\n         * @return {Array}\n         *         An array of of supported languages\n         */\n        languages() {\n            return merge$2(Player.prototype.options_.languages, this.languages_);\n        }\n\n        /**\n         * returns a JavaScript object representing the current track\n         * information. **DOES not return it as JSON**\n         *\n         * @return {Object}\n         *         Object representing the current of track info\n         */\n        toJSON() {\n            const options = merge$2(this.options_);\n            const tracks = options.tracks;\n            options.tracks = [];\n            for (let i = 0; i < tracks.length; i++) {\n                let track = tracks[i];\n\n                // deep merge tracks and null out player so no circular references\n                track = merge$2(track);\n                track.player = undefined;\n                options.tracks[i] = track;\n            }\n            return options;\n        }\n\n        /**\n         * Creates a simple modal dialog (an instance of the {@link ModalDialog}\n         * component) that immediately overlays the player with arbitrary\n         * content and removes itself when closed.\n         *\n         * @param {string|Function|Element|Array|null} content\n         *        Same as {@link ModalDialog#content}'s param of the same name.\n         *        The most straight-forward usage is to provide a string or DOM\n         *        element.\n         *\n         * @param {Object} [options]\n         *        Extra options which will be passed on to the {@link ModalDialog}.\n         *\n         * @return {ModalDialog}\n         *         the {@link ModalDialog} that was created\n         */\n        createModal(content, options) {\n            options = options || {};\n            options.content = content || '';\n            const modal = new ModalDialog(this, options);\n            this.addChild(modal);\n            modal.on('dispose', () => {\n                this.removeChild(modal);\n            });\n            modal.open();\n            return modal;\n        }\n\n        /**\n         * Change breakpoint classes when the player resizes.\n         *\n         * @private\n         */\n        updateCurrentBreakpoint_() {\n            if (!this.responsive()) {\n                return;\n            }\n            const currentBreakpoint = this.currentBreakpoint();\n            const currentWidth = this.currentWidth();\n            for (let i = 0; i < BREAKPOINT_ORDER.length; i++) {\n                const candidateBreakpoint = BREAKPOINT_ORDER[i];\n                const maxWidth = this.breakpoints_[candidateBreakpoint];\n                if (currentWidth <= maxWidth) {\n                    // The current breakpoint did not change, nothing to do.\n                    if (currentBreakpoint === candidateBreakpoint) {\n                        return;\n                    }\n\n                    // Only remove a class if there is a current breakpoint.\n                    if (currentBreakpoint) {\n                        this.removeClass(BREAKPOINT_CLASSES[currentBreakpoint]);\n                    }\n                    this.addClass(BREAKPOINT_CLASSES[candidateBreakpoint]);\n                    this.breakpoint_ = candidateBreakpoint;\n                    break;\n                }\n            }\n        }\n\n        /**\n         * Removes the current breakpoint.\n         *\n         * @private\n         */\n        removeCurrentBreakpoint_() {\n            const className = this.currentBreakpointClass();\n            this.breakpoint_ = '';\n            if (className) {\n                this.removeClass(className);\n            }\n        }\n\n        /**\n         * Get or set breakpoints on the player.\n         *\n         * Calling this method with an object or `true` will remove any previous\n         * custom breakpoints and start from the defaults again.\n         *\n         * @param  {Object|boolean} [breakpoints]\n         *         If an object is given, it can be used to provide custom\n         *         breakpoints. If `true` is given, will set default breakpoints.\n         *         If this argument is not given, will simply return the current\n         *         breakpoints.\n         *\n         * @param  {number} [breakpoints.tiny]\n         *         The maximum width for the \"vjs-layout-tiny\" class.\n         *\n         * @param  {number} [breakpoints.xsmall]\n         *         The maximum width for the \"vjs-layout-x-small\" class.\n         *\n         * @param  {number} [breakpoints.small]\n         *         The maximum width for the \"vjs-layout-small\" class.\n         *\n         * @param  {number} [breakpoints.medium]\n         *         The maximum width for the \"vjs-layout-medium\" class.\n         *\n         * @param  {number} [breakpoints.large]\n         *         The maximum width for the \"vjs-layout-large\" class.\n         *\n         * @param  {number} [breakpoints.xlarge]\n         *         The maximum width for the \"vjs-layout-x-large\" class.\n         *\n         * @param  {number} [breakpoints.huge]\n         *         The maximum width for the \"vjs-layout-huge\" class.\n         *\n         * @return {Object}\n         *         An object mapping breakpoint names to maximum width values.\n         */\n        breakpoints(breakpoints) {\n            // Used as a getter.\n            if (breakpoints === undefined) {\n                return Object.assign(this.breakpoints_);\n            }\n            this.breakpoint_ = '';\n            this.breakpoints_ = Object.assign({}, DEFAULT_BREAKPOINTS, breakpoints);\n\n            // When breakpoint definitions change, we need to update the currently\n            // selected breakpoint.\n            this.updateCurrentBreakpoint_();\n\n            // Clone the breakpoints before returning.\n            return Object.assign(this.breakpoints_);\n        }\n\n        /**\n         * Get or set a flag indicating whether or not this player should adjust\n         * its UI based on its dimensions.\n         *\n         * @param  {boolean} [value]\n         *         Should be `true` if the player should adjust its UI based on its\n         *         dimensions; otherwise, should be `false`.\n         *\n         * @return {boolean|undefined}\n         *         Will be `true` if this player should adjust its UI based on its\n         *         dimensions; otherwise, will be `false`.\n         *         Nothing if setting\n         */\n        responsive(value) {\n            // Used as a getter.\n            if (value === undefined) {\n                return this.responsive_;\n            }\n            value = Boolean(value);\n            const current = this.responsive_;\n\n            // Nothing changed.\n            if (value === current) {\n                return;\n            }\n\n            // The value actually changed, set it.\n            this.responsive_ = value;\n\n            // Start listening for breakpoints and set the initial breakpoint if the\n            // player is now responsive.\n            if (value) {\n                this.on('playerresize', this.boundUpdateCurrentBreakpoint_);\n                this.updateCurrentBreakpoint_();\n\n                // Stop listening for breakpoints if the player is no longer responsive.\n            } else {\n                this.off('playerresize', this.boundUpdateCurrentBreakpoint_);\n                this.removeCurrentBreakpoint_();\n            }\n            return value;\n        }\n\n        /**\n         * Get current breakpoint name, if any.\n         *\n         * @return {string}\n         *         If there is currently a breakpoint set, returns a the key from the\n         *         breakpoints object matching it. Otherwise, returns an empty string.\n         */\n        currentBreakpoint() {\n            return this.breakpoint_;\n        }\n\n        /**\n         * Get the current breakpoint class name.\n         *\n         * @return {string}\n         *         The matching class name (e.g. `\"vjs-layout-tiny\"` or\n         *         `\"vjs-layout-large\"`) for the current breakpoint. Empty string if\n         *         there is no current breakpoint.\n         */\n        currentBreakpointClass() {\n            return BREAKPOINT_CLASSES[this.breakpoint_] || '';\n        }\n\n        /**\n         * An object that describes a single piece of media.\n         *\n         * Properties that are not part of this type description will be retained; so,\n         * this can be viewed as a generic metadata storage mechanism as well.\n         *\n         * @see      {@link https://wicg.github.io/mediasession/#the-mediametadata-interface}\n         * @typedef  {Object} Player~MediaObject\n         *\n         * @property {string} [album]\n         *           Unused, except if this object is passed to the `MediaSession`\n         *           API.\n         *\n         * @property {string} [artist]\n         *           Unused, except if this object is passed to the `MediaSession`\n         *           API.\n         *\n         * @property {Object[]} [artwork]\n         *           Unused, except if this object is passed to the `MediaSession`\n         *           API. If not specified, will be populated via the `poster`, if\n         *           available.\n         *\n         * @property {string} [poster]\n         *           URL to an image that will display before playback.\n         *\n         * @property {Tech~SourceObject|Tech~SourceObject[]|string} [src]\n         *           A single source object, an array of source objects, or a string\n         *           referencing a URL to a media source. It is _highly recommended_\n         *           that an object or array of objects is used here, so that source\n         *           selection algorithms can take the `type` into account.\n         *\n         * @property {string} [title]\n         *           Unused, except if this object is passed to the `MediaSession`\n         *           API.\n         *\n         * @property {Object[]} [textTracks]\n         *           An array of objects to be used to create text tracks, following\n         *           the {@link https://www.w3.org/TR/html50/embedded-content-0.html#the-track-element|native track element format}.\n         *           For ease of removal, these will be created as \"remote\" text\n         *           tracks and set to automatically clean up on source changes.\n         *\n         *           These objects may have properties like `src`, `kind`, `label`,\n         *           and `language`, see {@link Tech#createRemoteTextTrack}.\n         */\n\n        /**\n         * Populate the player using a {@link Player~MediaObject|MediaObject}.\n         *\n         * @param  {Player~MediaObject} media\n         *         A media object.\n         *\n         * @param  {Function} ready\n         *         A callback to be called when the player is ready.\n         */\n        loadMedia(media, ready) {\n            if (!media || typeof media !== 'object') {\n                return;\n            }\n            const crossOrigin = this.crossOrigin();\n            this.reset();\n\n            // Clone the media object so it cannot be mutated from outside.\n            this.cache_.media = merge$2(media);\n            const {\n                artist,\n                artwork,\n                description,\n                poster,\n                src,\n                textTracks,\n                title\n            } = this.cache_.media;\n\n            // If `artwork` is not given, create it using `poster`.\n            if (!artwork && poster) {\n                this.cache_.media.artwork = [{\n                    src: poster,\n                    type: getMimetype(poster)\n                }];\n            }\n            if (crossOrigin) {\n                this.crossOrigin(crossOrigin);\n            }\n            if (src) {\n                this.src(src);\n            }\n            if (poster) {\n                this.poster(poster);\n            }\n            if (Array.isArray(textTracks)) {\n                textTracks.forEach(tt => this.addRemoteTextTrack(tt, false));\n            }\n            if (this.titleBar) {\n                this.titleBar.update({\n                    title,\n                    description: description || artist || ''\n                });\n            }\n            this.ready(ready);\n        }\n\n        /**\n         * Get a clone of the current {@link Player~MediaObject} for this player.\n         *\n         * If the `loadMedia` method has not been used, will attempt to return a\n         * {@link Player~MediaObject} based on the current state of the player.\n         *\n         * @return {Player~MediaObject}\n         */\n        getMedia() {\n            if (!this.cache_.media) {\n                const poster = this.poster();\n                const src = this.currentSources();\n                const textTracks = Array.prototype.map.call(this.remoteTextTracks(), tt => ({\n                    kind: tt.kind,\n                    label: tt.label,\n                    language: tt.language,\n                    src: tt.src\n                }));\n                const media = {\n                    src,\n                    textTracks\n                };\n                if (poster) {\n                    media.poster = poster;\n                    media.artwork = [{\n                        src: media.poster,\n                        type: getMimetype(media.poster)\n                    }];\n                }\n                return media;\n            }\n            return merge$2(this.cache_.media);\n        }\n\n        /**\n         * Gets tag settings\n         *\n         * @param {Element} tag\n         *        The player tag\n         *\n         * @return {Object}\n         *         An object containing all of the settings\n         *         for a player tag\n         */\n        static getTagSettings(tag) {\n            const baseOptions = {\n                sources: [],\n                tracks: []\n            };\n            const tagOptions = getAttributes(tag);\n            const dataSetup = tagOptions['data-setup'];\n            if (hasClass(tag, 'vjs-fill')) {\n                tagOptions.fill = true;\n            }\n            if (hasClass(tag, 'vjs-fluid')) {\n                tagOptions.fluid = true;\n            }\n\n            // Check if data-setup attr exists.\n            if (dataSetup !== null) {\n                // Parse options JSON\n                // If empty string, make it a parsable json object.\n                const [err, data] = tuple(dataSetup || '{}');\n                if (err) {\n                    log$1.error(err);\n                }\n                Object.assign(tagOptions, data);\n            }\n            Object.assign(baseOptions, tagOptions);\n\n            // Get tag children settings\n            if (tag.hasChildNodes()) {\n                const children = tag.childNodes;\n                for (let i = 0, j = children.length; i < j; i++) {\n                    const child = children[i];\n                    // Change case needed: http://ejohn.org/blog/nodename-case-sensitivity/\n                    const childName = child.nodeName.toLowerCase();\n                    if (childName === 'source') {\n                        baseOptions.sources.push(getAttributes(child));\n                    } else if (childName === 'track') {\n                        baseOptions.tracks.push(getAttributes(child));\n                    }\n                }\n            }\n            return baseOptions;\n        }\n\n        /**\n         * Set debug mode to enable/disable logs at info level.\n         *\n         * @param {boolean} enabled\n         * @fires Player#debugon\n         * @fires Player#debugoff\n         * @return {boolean|undefined}\n         */\n        debug(enabled) {\n            if (enabled === undefined) {\n                return this.debugEnabled_;\n            }\n            if (enabled) {\n                this.trigger('debugon');\n                this.previousLogLevel_ = this.log.level;\n                this.log.level('debug');\n                this.debugEnabled_ = true;\n            } else {\n                this.trigger('debugoff');\n                this.log.level(this.previousLogLevel_);\n                this.previousLogLevel_ = undefined;\n                this.debugEnabled_ = false;\n            }\n        }\n\n        /**\n         * Set or get current playback rates.\n         * Takes an array and updates the playback rates menu with the new items.\n         * Pass in an empty array to hide the menu.\n         * Values other than arrays are ignored.\n         *\n         * @fires Player#playbackrateschange\n         * @param {number[]} newRates\n         *                   The new rates that the playback rates menu should update to.\n         *                   An empty array will hide the menu\n         * @return {number[]} When used as a getter will return the current playback rates\n         */\n        playbackRates(newRates) {\n            if (newRates === undefined) {\n                return this.cache_.playbackRates;\n            }\n\n            // ignore any value that isn't an array\n            if (!Array.isArray(newRates)) {\n                return;\n            }\n\n            // ignore any arrays that don't only contain numbers\n            if (!newRates.every(rate => typeof rate === 'number')) {\n                return;\n            }\n            this.cache_.playbackRates = newRates;\n\n            /**\n             * fires when the playback rates in a player are changed\n             *\n             * @event Player#playbackrateschange\n             * @type {Event}\n             */\n            this.trigger('playbackrateschange');\n        }\n    }\n\n    /**\n     * Get the {@link VideoTrackList}\n     *\n     * @link https://html.spec.whatwg.org/multipage/embedded-content.html#videotracklist\n     *\n     * @return {VideoTrackList}\n     *         the current video track list\n     *\n     * @method Player.prototype.videoTracks\n     */\n\n    /**\n     * Get the {@link AudioTrackList}\n     *\n     * @link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotracklist\n     *\n     * @return {AudioTrackList}\n     *         the current audio track list\n     *\n     * @method Player.prototype.audioTracks\n     */\n\n    /**\n     * Get the {@link TextTrackList}\n     *\n     * @link http://www.w3.org/html/wg/drafts/html/master/embedded-content-0.html#dom-media-texttracks\n     *\n     * @return {TextTrackList}\n     *         the current text track list\n     *\n     * @method Player.prototype.textTracks\n     */\n\n    /**\n     * Get the remote {@link TextTrackList}\n     *\n     * @return {TextTrackList}\n     *         The current remote text track list\n     *\n     * @method Player.prototype.remoteTextTracks\n     */\n\n    /**\n     * Get the remote {@link HtmlTrackElementList} tracks.\n     *\n     * @return {HtmlTrackElementList}\n     *         The current remote text track element list\n     *\n     * @method Player.prototype.remoteTextTrackEls\n     */\n\n    ALL.names.forEach(function (name) {\n        const props = ALL[name];\n        Player.prototype[props.getterName] = function () {\n            if (this.tech_) {\n                return this.tech_[props.getterName]();\n            }\n\n            // if we have not yet loadTech_, we create {video,audio,text}Tracks_\n            // these will be passed to the tech during loading\n            this[props.privateName] = this[props.privateName] || new props.ListClass();\n            return this[props.privateName];\n        };\n    });\n\n    /**\n     * Get or set the `Player`'s crossorigin option. For the HTML5 player, this\n     * sets the `crossOrigin` property on the `<video>` tag to control the CORS\n     * behavior.\n     *\n     * @see [Video Element Attributes]{@link https://developer.mozilla.org/en-US/docs/Web/HTML/Element/video#attr-crossorigin}\n     *\n     * @param {string} [value]\n     *        The value to set the `Player`'s crossorigin to. If an argument is\n     *        given, must be one of `anonymous` or `use-credentials`.\n     *\n     * @return {string|undefined}\n     *         - The current crossorigin value of the `Player` when getting.\n     *         - undefined when setting\n     */\n    Player.prototype.crossorigin = Player.prototype.crossOrigin;\n\n    /**\n     * Global enumeration of players.\n     *\n     * The keys are the player IDs and the values are either the {@link Player}\n     * instance or `null` for disposed players.\n     *\n     * @type {Object}\n     */\n    Player.players = {};\n    const navigator = window.navigator;\n\n    /*\n   * Player instance options, surfaced using options\n   * options = Player.prototype.options_\n   * Make changes in options, not here.\n   *\n   * @type {Object}\n   * @private\n   */\n    Player.prototype.options_ = {\n        // Default order of fallback technology\n        techOrder: Tech.defaultTechOrder_,\n        html5: {},\n        // enable sourceset by default\n        enableSourceset: true,\n        // default inactivity timeout\n        inactivityTimeout: 2000,\n        // default playback rates\n        playbackRates: [],\n        // Add playback rate selection by adding rates\n        // 'playbackRates': [0.5, 1, 1.5, 2],\n        liveui: false,\n        // Included control sets\n        children: ['mediaLoader', 'posterImage', 'titleBar', 'textTrackDisplay', 'loadingSpinner', 'bigPlayButton', 'liveTracker', 'controlBar', 'errorDisplay', 'textTrackSettings', 'resizeManager'],\n        language: navigator && (navigator.languages && navigator.languages[0] || navigator.userLanguage || navigator.language) || 'en',\n        // locales and their language translations\n        languages: {},\n        // Default message to show when a video cannot be played.\n        notSupportedMessage: 'No compatible source was found for this media.',\n        normalizeAutoplay: false,\n        fullscreen: {\n            options: {\n                navigationUI: 'hide'\n            }\n        },\n        breakpoints: {},\n        responsive: false,\n        audioOnlyMode: false,\n        audioPosterMode: false,\n        // Default smooth seeking to false\n        enableSmoothSeeking: false\n    };\n    TECH_EVENTS_RETRIGGER.forEach(function (event) {\n        Player.prototype[`handleTech${toTitleCase$1(event)}_`] = function () {\n            return this.trigger(event);\n        };\n    });\n\n    /**\n     * Fired when the player has initial duration and dimension information\n     *\n     * @event Player#loadedmetadata\n     * @type {Event}\n     */\n\n    /**\n     * Fired when the player has downloaded data at the current playback position\n     *\n     * @event Player#loadeddata\n     * @type {Event}\n     */\n\n    /**\n     * Fired when the current playback position has changed *\n     * During playback this is fired every 15-250 milliseconds, depending on the\n     * playback technology in use.\n     *\n     * @event Player#timeupdate\n     * @type {Event}\n     */\n\n    /**\n     * Fired when the volume changes\n     *\n     * @event Player#volumechange\n     * @type {Event}\n     */\n\n    /**\n     * Reports whether or not a player has a plugin available.\n     *\n     * This does not report whether or not the plugin has ever been initialized\n     * on this player. For that, [usingPlugin]{@link Player#usingPlugin}.\n     *\n     * @method Player#hasPlugin\n     * @param  {string}  name\n     *         The name of a plugin.\n     *\n     * @return {boolean}\n     *         Whether or not this player has the requested plugin available.\n     */\n\n    /**\n     * Reports whether or not a player is using a plugin by name.\n     *\n     * For basic plugins, this only reports whether the plugin has _ever_ been\n     * initialized on this player.\n     *\n     * @method Player#usingPlugin\n     * @param  {string} name\n     *         The name of a plugin.\n     *\n     * @return {boolean}\n     *         Whether or not this player is using the requested plugin.\n     */\n\n    Component$1.registerComponent('Player', Player);\n\n    /**\n     * @file plugin.js\n     */\n\n    /**\n     * The base plugin name.\n     *\n     * @private\n     * @constant\n     * @type {string}\n     */\n    const BASE_PLUGIN_NAME = 'plugin';\n\n    /**\n     * The key on which a player's active plugins cache is stored.\n     *\n     * @private\n     * @constant\n     * @type     {string}\n     */\n    const PLUGIN_CACHE_KEY = 'activePlugins_';\n\n    /**\n     * Stores registered plugins in a private space.\n     *\n     * @private\n     * @type    {Object}\n     */\n    const pluginStorage = {};\n\n    /**\n     * Reports whether or not a plugin has been registered.\n     *\n     * @private\n     * @param   {string} name\n     *          The name of a plugin.\n     *\n     * @return {boolean}\n     *          Whether or not the plugin has been registered.\n     */\n    const pluginExists = name => pluginStorage.hasOwnProperty(name);\n\n    /**\n     * Get a single registered plugin by name.\n     *\n     * @private\n     * @param   {string} name\n     *          The name of a plugin.\n     *\n     * @return {typeof Plugin|Function|undefined}\n     *          The plugin (or undefined).\n     */\n    const getPlugin = name => pluginExists(name) ? pluginStorage[name] : undefined;\n\n    /**\n     * Marks a plugin as \"active\" on a player.\n     *\n     * Also, ensures that the player has an object for tracking active plugins.\n     *\n     * @private\n     * @param   {Player} player\n     *          A Video.js player instance.\n     *\n     * @param   {string} name\n     *          The name of a plugin.\n     */\n    const markPluginAsActive = (player, name) => {\n        player[PLUGIN_CACHE_KEY] = player[PLUGIN_CACHE_KEY] || {};\n        player[PLUGIN_CACHE_KEY][name] = true;\n    };\n\n    /**\n     * Triggers a pair of plugin setup events.\n     *\n     * @private\n     * @param  {Player} player\n     *         A Video.js player instance.\n     *\n     * @param  {PluginEventHash} hash\n     *         A plugin event hash.\n     *\n     * @param  {boolean} [before]\n     *         If true, prefixes the event name with \"before\". In other words,\n     *         use this to trigger \"beforepluginsetup\" instead of \"pluginsetup\".\n     */\n    const triggerSetupEvent = (player, hash, before) => {\n        const eventName = (before ? 'before' : '') + 'pluginsetup';\n        player.trigger(eventName, hash);\n        player.trigger(eventName + ':' + hash.name, hash);\n    };\n\n    /**\n     * Takes a basic plugin function and returns a wrapper function which marks\n     * on the player that the plugin has been activated.\n     *\n     * @private\n     * @param   {string} name\n     *          The name of the plugin.\n     *\n     * @param   {Function} plugin\n     *          The basic plugin.\n     *\n     * @return {Function}\n     *          A wrapper function for the given plugin.\n     */\n    const createBasicPlugin = function (name, plugin) {\n        const basicPluginWrapper = function () {\n            // We trigger the \"beforepluginsetup\" and \"pluginsetup\" events on the player\n            // regardless, but we want the hash to be consistent with the hash provided\n            // for advanced plugins.\n            //\n            // The only potentially counter-intuitive thing here is the `instance` in\n            // the \"pluginsetup\" event is the value returned by the `plugin` function.\n            triggerSetupEvent(this, {\n                name,\n                plugin,\n                instance: null\n            }, true);\n            const instance = plugin.apply(this, arguments);\n            markPluginAsActive(this, name);\n            triggerSetupEvent(this, {\n                name,\n                plugin,\n                instance\n            });\n            return instance;\n        };\n        Object.keys(plugin).forEach(function (prop) {\n            basicPluginWrapper[prop] = plugin[prop];\n        });\n        return basicPluginWrapper;\n    };\n\n    /**\n     * Takes a plugin sub-class and returns a factory function for generating\n     * instances of it.\n     *\n     * This factory function will replace itself with an instance of the requested\n     * sub-class of Plugin.\n     *\n     * @private\n     * @param   {string} name\n     *          The name of the plugin.\n     *\n     * @param   {Plugin} PluginSubClass\n     *          The advanced plugin.\n     *\n     * @return {Function}\n     */\n    const createPluginFactory = (name, PluginSubClass) => {\n        // Add a `name` property to the plugin prototype so that each plugin can\n        // refer to itself by name.\n        PluginSubClass.prototype.name = name;\n        return function (...args) {\n            triggerSetupEvent(this, {\n                name,\n                plugin: PluginSubClass,\n                instance: null\n            }, true);\n            const instance = new PluginSubClass(...[this, ...args]);\n\n            // The plugin is replaced by a function that returns the current instance.\n            this[name] = () => instance;\n            triggerSetupEvent(this, instance.getEventHash());\n            return instance;\n        };\n    };\n\n    /**\n     * Parent class for all advanced plugins.\n     *\n     * @mixes   module:evented~EventedMixin\n     * @mixes   module:stateful~StatefulMixin\n     * @fires   Player#beforepluginsetup\n     * @fires   Player#beforepluginsetup:$name\n     * @fires   Player#pluginsetup\n     * @fires   Player#pluginsetup:$name\n     * @listens Player#dispose\n     * @throws  {Error}\n     *          If attempting to instantiate the base {@link Plugin} class\n     *          directly instead of via a sub-class.\n     */\n    class Plugin {\n        /**\n         * Creates an instance of this class.\n         *\n         * Sub-classes should call `super` to ensure plugins are properly initialized.\n         *\n         * @param {Player} player\n         *        A Video.js player instance.\n         */\n        constructor(player) {\n            if (this.constructor === Plugin) {\n                throw new Error('Plugin must be sub-classed; not directly instantiated.');\n            }\n            this.player = player;\n            if (!this.log) {\n                this.log = this.player.log.createLogger(this.name);\n            }\n\n            // Make this object evented, but remove the added `trigger` method so we\n            // use the prototype version instead.\n            evented(this);\n            delete this.trigger;\n            stateful(this, this.constructor.defaultState);\n            markPluginAsActive(player, this.name);\n\n            // Auto-bind the dispose method so we can use it as a listener and unbind\n            // it later easily.\n            this.dispose = this.dispose.bind(this);\n\n            // If the player is disposed, dispose the plugin.\n            player.on('dispose', this.dispose);\n        }\n\n        /**\n         * Get the version of the plugin that was set on <pluginName>.VERSION\n         */\n        version() {\n            return this.constructor.VERSION;\n        }\n\n        /**\n         * Each event triggered by plugins includes a hash of additional data with\n         * conventional properties.\n         *\n         * This returns that object or mutates an existing hash.\n         *\n         * @param   {Object} [hash={}]\n         *          An object to be used as event an event hash.\n         *\n         * @return {PluginEventHash}\n         *          An event hash object with provided properties mixed-in.\n         */\n        getEventHash(hash = {}) {\n            hash.name = this.name;\n            hash.plugin = this.constructor;\n            hash.instance = this;\n            return hash;\n        }\n\n        /**\n         * Triggers an event on the plugin object and overrides\n         * {@link module:evented~EventedMixin.trigger|EventedMixin.trigger}.\n         *\n         * @param   {string|Object} event\n         *          An event type or an object with a type property.\n         *\n         * @param   {Object} [hash={}]\n         *          Additional data hash to merge with a\n         *          {@link PluginEventHash|PluginEventHash}.\n         *\n         * @return {boolean}\n         *          Whether or not default was prevented.\n         */\n        trigger(event, hash = {}) {\n            return trigger(this.eventBusEl_, event, this.getEventHash(hash));\n        }\n\n        /**\n         * Handles \"statechanged\" events on the plugin. No-op by default, override by\n         * subclassing.\n         *\n         * @abstract\n         * @param    {Event} e\n         *           An event object provided by a \"statechanged\" event.\n         *\n         * @param    {Object} e.changes\n         *           An object describing changes that occurred with the \"statechanged\"\n         *           event.\n         */\n        handleStateChanged(e) {}\n\n        /**\n         * Disposes a plugin.\n         *\n         * Subclasses can override this if they want, but for the sake of safety,\n         * it's probably best to subscribe the \"dispose\" event.\n         *\n         * @fires Plugin#dispose\n         */\n        dispose() {\n            const {\n                name,\n                player\n            } = this;\n\n            /**\n             * Signals that a advanced plugin is about to be disposed.\n             *\n             * @event Plugin#dispose\n             * @type  {Event}\n             */\n            this.trigger('dispose');\n            this.off();\n            player.off('dispose', this.dispose);\n\n            // Eliminate any possible sources of leaking memory by clearing up\n            // references between the player and the plugin instance and nulling out\n            // the plugin's state and replacing methods with a function that throws.\n            player[PLUGIN_CACHE_KEY][name] = false;\n            this.player = this.state = null;\n\n            // Finally, replace the plugin name on the player with a new factory\n            // function, so that the plugin is ready to be set up again.\n            player[name] = createPluginFactory(name, pluginStorage[name]);\n        }\n\n        /**\n         * Determines if a plugin is a basic plugin (i.e. not a sub-class of `Plugin`).\n         *\n         * @param   {string|Function} plugin\n         *          If a string, matches the name of a plugin. If a function, will be\n         *          tested directly.\n         *\n         * @return {boolean}\n         *          Whether or not a plugin is a basic plugin.\n         */\n        static isBasic(plugin) {\n            const p = typeof plugin === 'string' ? getPlugin(plugin) : plugin;\n            return typeof p === 'function' && !Plugin.prototype.isPrototypeOf(p.prototype);\n        }\n\n        /**\n         * Register a Video.js plugin.\n         *\n         * @param   {string} name\n         *          The name of the plugin to be registered. Must be a string and\n         *          must not match an existing plugin or a method on the `Player`\n         *          prototype.\n         *\n         * @param   {typeof Plugin|Function} plugin\n         *          A sub-class of `Plugin` or a function for basic plugins.\n         *\n         * @return {typeof Plugin|Function}\n         *          For advanced plugins, a factory function for that plugin. For\n         *          basic plugins, a wrapper function that initializes the plugin.\n         */\n        static registerPlugin(name, plugin) {\n            if (typeof name !== 'string') {\n                throw new Error(`Illegal plugin name, \"${name}\", must be a string, was ${typeof name}.`);\n            }\n            if (pluginExists(name)) {\n                log$1.warn(`A plugin named \"${name}\" already exists. You may want to avoid re-registering plugins!`);\n            } else if (Player.prototype.hasOwnProperty(name)) {\n                throw new Error(`Illegal plugin name, \"${name}\", cannot share a name with an existing player method!`);\n            }\n            if (typeof plugin !== 'function') {\n                throw new Error(`Illegal plugin for \"${name}\", must be a function, was ${typeof plugin}.`);\n            }\n            pluginStorage[name] = plugin;\n\n            // Add a player prototype method for all sub-classed plugins (but not for\n            // the base Plugin class).\n            if (name !== BASE_PLUGIN_NAME) {\n                if (Plugin.isBasic(plugin)) {\n                    Player.prototype[name] = createBasicPlugin(name, plugin);\n                } else {\n                    Player.prototype[name] = createPluginFactory(name, plugin);\n                }\n            }\n            return plugin;\n        }\n\n        /**\n         * De-register a Video.js plugin.\n         *\n         * @param  {string} name\n         *         The name of the plugin to be de-registered. Must be a string that\n         *         matches an existing plugin.\n         *\n         * @throws {Error}\n         *         If an attempt is made to de-register the base plugin.\n         */\n        static deregisterPlugin(name) {\n            if (name === BASE_PLUGIN_NAME) {\n                throw new Error('Cannot de-register base plugin.');\n            }\n            if (pluginExists(name)) {\n                delete pluginStorage[name];\n                delete Player.prototype[name];\n            }\n        }\n\n        /**\n         * Gets an object containing multiple Video.js plugins.\n         *\n         * @param   {Array} [names]\n         *          If provided, should be an array of plugin names. Defaults to _all_\n         *          plugin names.\n         *\n         * @return {Object|undefined}\n         *          An object containing plugin(s) associated with their name(s) or\n         *          `undefined` if no matching plugins exist).\n         */\n        static getPlugins(names = Object.keys(pluginStorage)) {\n            let result;\n            names.forEach(name => {\n                const plugin = getPlugin(name);\n                if (plugin) {\n                    result = result || {};\n                    result[name] = plugin;\n                }\n            });\n            return result;\n        }\n\n        /**\n         * Gets a plugin's version, if available\n         *\n         * @param   {string} name\n         *          The name of a plugin.\n         *\n         * @return {string}\n         *          The plugin's version or an empty string.\n         */\n        static getPluginVersion(name) {\n            const plugin = getPlugin(name);\n            return plugin && plugin.VERSION || '';\n        }\n    }\n\n    /**\n     * Gets a plugin by name if it exists.\n     *\n     * @static\n     * @method   getPlugin\n     * @memberOf Plugin\n     * @param    {string} name\n     *           The name of a plugin.\n     *\n     * @returns  {typeof Plugin|Function|undefined}\n     *           The plugin (or `undefined`).\n     */\n    Plugin.getPlugin = getPlugin;\n\n    /**\n     * The name of the base plugin class as it is registered.\n     *\n     * @type {string}\n     */\n    Plugin.BASE_PLUGIN_NAME = BASE_PLUGIN_NAME;\n    Plugin.registerPlugin(BASE_PLUGIN_NAME, Plugin);\n\n    /**\n     * Documented in player.js\n     *\n     * @ignore\n     */\n    Player.prototype.usingPlugin = function (name) {\n        return !!this[PLUGIN_CACHE_KEY] && this[PLUGIN_CACHE_KEY][name] === true;\n    };\n\n    /**\n     * Documented in player.js\n     *\n     * @ignore\n     */\n    Player.prototype.hasPlugin = function (name) {\n        return !!pluginExists(name);\n    };\n\n    /**\n     * Signals that a plugin is about to be set up on a player.\n     *\n     * @event    Player#beforepluginsetup\n     * @type     {PluginEventHash}\n     */\n\n    /**\n     * Signals that a plugin is about to be set up on a player - by name. The name\n     * is the name of the plugin.\n     *\n     * @event    Player#beforepluginsetup:$name\n     * @type     {PluginEventHash}\n     */\n\n    /**\n     * Signals that a plugin has just been set up on a player.\n     *\n     * @event    Player#pluginsetup\n     * @type     {PluginEventHash}\n     */\n\n    /**\n     * Signals that a plugin has just been set up on a player - by name. The name\n     * is the name of the plugin.\n     *\n     * @event    Player#pluginsetup:$name\n     * @type     {PluginEventHash}\n     */\n\n    /**\n     * @typedef  {Object} PluginEventHash\n     *\n     * @property {string} instance\n     *           For basic plugins, the return value of the plugin function. For\n     *           advanced plugins, the plugin instance on which the event is fired.\n     *\n     * @property {string} name\n     *           The name of the plugin.\n     *\n     * @property {string} plugin\n     *           For basic plugins, the plugin function. For advanced plugins, the\n     *           plugin class/constructor.\n     */\n\n    /**\n     * @file deprecate.js\n     * @module deprecate\n     */\n\n    /**\n     * Decorate a function with a deprecation message the first time it is called.\n     *\n     * @param  {string}   message\n     *         A deprecation message to log the first time the returned function\n     *         is called.\n     *\n     * @param  {Function} fn\n     *         The function to be deprecated.\n     *\n     * @return {Function}\n     *         A wrapper function that will log a deprecation warning the first\n     *         time it is called. The return value will be the return value of\n     *         the wrapped function.\n     */\n    function deprecate(message, fn) {\n        let warned = false;\n        return function (...args) {\n            if (!warned) {\n                log$1.warn(message);\n            }\n            warned = true;\n            return fn.apply(this, args);\n        };\n    }\n\n    /**\n     * Internal function used to mark a function as deprecated in the next major\n     * version with consistent messaging.\n     *\n     * @param  {number}   major   The major version where it will be removed\n     * @param  {string}   oldName The old function name\n     * @param  {string}   newName The new function name\n     * @param  {Function} fn      The function to deprecate\n     * @return {Function}         The decorated function\n     */\n    function deprecateForMajor(major, oldName, newName, fn) {\n        return deprecate(`${oldName} is deprecated and will be removed in ${major}.0; please use ${newName} instead.`, fn);\n    }\n\n    /**\n     * @file video.js\n     * @module videojs\n     */\n\n    /**\n     * Normalize an `id` value by trimming off a leading `#`\n     *\n     * @private\n     * @param   {string} id\n     *          A string, maybe with a leading `#`.\n     *\n     * @return {string}\n     *          The string, without any leading `#`.\n     */\n    const normalizeId = id => id.indexOf('#') === 0 ? id.slice(1) : id;\n\n    /**\n     * A callback that is called when a component is ready. Does not have any\n     * parameters and any callback value will be ignored. See: {@link Component~ReadyCallback}\n     *\n     * @callback ReadyCallback\n     */\n\n    /**\n     * The `videojs()` function doubles as the main function for users to create a\n     * {@link Player} instance as well as the main library namespace.\n     *\n     * It can also be used as a getter for a pre-existing {@link Player} instance.\n     * However, we _strongly_ recommend using `videojs.getPlayer()` for this\n     * purpose because it avoids any potential for unintended initialization.\n     *\n     * Due to [limitations](https://github.com/jsdoc3/jsdoc/issues/955#issuecomment-313829149)\n     * of our JSDoc template, we cannot properly document this as both a function\n     * and a namespace, so its function signature is documented here.\n     *\n     * #### Arguments\n     * ##### id\n     * string|Element, **required**\n     *\n     * Video element or video element ID.\n     *\n     * ##### options\n     * Object, optional\n     *\n     * Options object for providing settings.\n     * See: [Options Guide](https://docs.videojs.com/tutorial-options.html).\n     *\n     * ##### ready\n     * {@link Component~ReadyCallback}, optional\n     *\n     * A function to be called when the {@link Player} and {@link Tech} are ready.\n     *\n     * #### Return Value\n     *\n     * The `videojs()` function returns a {@link Player} instance.\n     *\n     * @namespace\n     *\n     * @borrows AudioTrack as AudioTrack\n     * @borrows Component.getComponent as getComponent\n     * @borrows module:events.on as on\n     * @borrows module:events.one as one\n     * @borrows module:events.off as off\n     * @borrows module:events.trigger as trigger\n     * @borrows EventTarget as EventTarget\n     * @borrows module:middleware.use as use\n     * @borrows Player.players as players\n     * @borrows Plugin.registerPlugin as registerPlugin\n     * @borrows Plugin.deregisterPlugin as deregisterPlugin\n     * @borrows Plugin.getPlugins as getPlugins\n     * @borrows Plugin.getPlugin as getPlugin\n     * @borrows Plugin.getPluginVersion as getPluginVersion\n     * @borrows Tech.getTech as getTech\n     * @borrows Tech.registerTech as registerTech\n     * @borrows TextTrack as TextTrack\n     * @borrows VideoTrack as VideoTrack\n     *\n     * @param  {string|Element} id\n     *         Video element or video element ID.\n     *\n     * @param  {Object} [options]\n     *         Options object for providing settings.\n     *         See: [Options Guide](https://docs.videojs.com/tutorial-options.html).\n     *\n     * @param  {ReadyCallback} [ready]\n     *         A function to be called when the {@link Player} and {@link Tech} are\n     *         ready.\n     *\n     * @return {Player}\n     *         The `videojs()` function returns a {@link Player|Player} instance.\n     */\n    function videojs(id, options, ready) {\n        let player = videojs.getPlayer(id);\n        if (player) {\n            if (options) {\n                log$1.warn(`Player \"${id}\" is already initialised. Options will not be applied.`);\n            }\n            if (ready) {\n                player.ready(ready);\n            }\n            return player;\n        }\n        const el = typeof id === 'string' ? $('#' + normalizeId(id)) : id;\n        if (!isEl(el)) {\n            throw new TypeError('The element or ID supplied is not valid. (videojs)');\n        }\n\n        // document.body.contains(el) will only check if el is contained within that one document.\n        // This causes problems for elements in iframes.\n        // Instead, use the element's ownerDocument instead of the global document.\n        // This will make sure that the element is indeed in the dom of that document.\n        // Additionally, check that the document in question has a default view.\n        // If the document is no longer attached to the dom, the defaultView of the document will be null.\n        // If element is inside Shadow DOM (e.g. is part of a Custom element), ownerDocument.body\n        // always returns false. Instead, use the Shadow DOM root.\n        const inShadowDom = 'getRootNode' in el ? el.getRootNode() instanceof window.ShadowRoot : false;\n        const rootNode = inShadowDom ? el.getRootNode() : el.ownerDocument.body;\n        if (!el.ownerDocument.defaultView || !rootNode.contains(el)) {\n            log$1.warn('The element supplied is not included in the DOM');\n        }\n        options = options || {};\n\n        // Store a copy of the el before modification, if it is to be restored in destroy()\n        // If div ingest, store the parent div\n        if (options.restoreEl === true) {\n            options.restoreEl = (el.parentNode && el.parentNode.hasAttribute('data-vjs-player') ? el.parentNode : el).cloneNode(true);\n        }\n        hooks('beforesetup').forEach(hookFunction => {\n            const opts = hookFunction(el, merge$2(options));\n            if (!isObject$1(opts) || Array.isArray(opts)) {\n                log$1.error('please return an object in beforesetup hooks');\n                return;\n            }\n            options = merge$2(options, opts);\n        });\n\n        // We get the current \"Player\" component here in case an integration has\n        // replaced it with a custom player.\n        const PlayerComponent = Component$1.getComponent('Player');\n        player = new PlayerComponent(el, options, ready);\n        hooks('setup').forEach(hookFunction => hookFunction(player));\n        return player;\n    }\n    videojs.hooks_ = hooks_;\n    videojs.hooks = hooks;\n    videojs.hook = hook;\n    videojs.hookOnce = hookOnce;\n    videojs.removeHook = removeHook;\n\n    // Add default styles\n    if (window.VIDEOJS_NO_DYNAMIC_STYLE !== true && isReal()) {\n        let style = $('.vjs-styles-defaults');\n        if (!style) {\n            style = createStyleElement('vjs-styles-defaults');\n            const head = $('head');\n            if (head) {\n                head.insertBefore(style, head.firstChild);\n            }\n            setTextContent(style, `\n      .video-js {\n        width: 300px;\n        height: 150px;\n      }\n\n      .vjs-fluid:not(.vjs-audio-only-mode) {\n        padding-top: 56.25%\n      }\n    `);\n        }\n    }\n\n    // Run Auto-load players\n    // You have to wait at least once in case this script is loaded after your\n    // video in the DOM (weird behavior only with minified version)\n    autoSetupTimeout(1, videojs);\n\n    /**\n     * Current Video.js version. Follows [semantic versioning](https://semver.org/).\n     *\n     * @type {string}\n     */\n    videojs.VERSION = version$5;\n\n    /**\n     * The global options object. These are the settings that take effect\n     * if no overrides are specified when the player is created.\n     *\n     * @type {Object}\n     */\n    videojs.options = Player.prototype.options_;\n\n    /**\n     * Get an object with the currently created players, keyed by player ID\n     *\n     * @return {Object}\n     *         The created players\n     */\n    videojs.getPlayers = () => Player.players;\n\n    /**\n     * Get a single player based on an ID or DOM element.\n     *\n     * This is useful if you want to check if an element or ID has an associated\n     * Video.js player, but not create one if it doesn't.\n     *\n     * @param   {string|Element} id\n     *          An HTML element - `<video>`, `<audio>`, or `<video-js>` -\n     *          or a string matching the `id` of such an element.\n     *\n     * @return {Player|undefined}\n     *          A player instance or `undefined` if there is no player instance\n     *          matching the argument.\n     */\n    videojs.getPlayer = id => {\n        const players = Player.players;\n        let tag;\n        if (typeof id === 'string') {\n            const nId = normalizeId(id);\n            const player = players[nId];\n            if (player) {\n                return player;\n            }\n            tag = $('#' + nId);\n        } else {\n            tag = id;\n        }\n        if (isEl(tag)) {\n            const {\n                player,\n                playerId\n            } = tag;\n\n            // Element may have a `player` property referring to an already created\n            // player instance. If so, return that.\n            if (player || players[playerId]) {\n                return player || players[playerId];\n            }\n        }\n    };\n\n    /**\n     * Returns an array of all current players.\n     *\n     * @return {Array}\n     *         An array of all players. The array will be in the order that\n     *         `Object.keys` provides, which could potentially vary between\n     *         JavaScript engines.\n     *\n     */\n    videojs.getAllPlayers = () =>\n        // Disposed players leave a key with a `null` value, so we need to make sure\n        // we filter those out.\n        Object.keys(Player.players).map(k => Player.players[k]).filter(Boolean);\n    videojs.players = Player.players;\n    videojs.getComponent = Component$1.getComponent;\n\n    /**\n     * Register a component so it can referred to by name. Used when adding to other\n     * components, either through addChild `component.addChild('myComponent')` or through\n     * default children options  `{ children: ['myComponent'] }`.\n     *\n     * > NOTE: You could also just initialize the component before adding.\n     * `component.addChild(new MyComponent());`\n     *\n     * @param {string} name\n     *        The class name of the component\n     *\n     * @param {typeof Component} comp\n     *        The component class\n     *\n     * @return {typeof Component}\n     *         The newly registered component\n     */\n    videojs.registerComponent = (name, comp) => {\n        if (Tech.isTech(comp)) {\n            log$1.warn(`The ${name} tech was registered as a component. It should instead be registered using videojs.registerTech(name, tech)`);\n        }\n        return Component$1.registerComponent.call(Component$1, name, comp);\n    };\n    videojs.getTech = Tech.getTech;\n    videojs.registerTech = Tech.registerTech;\n    videojs.use = use;\n\n    /**\n     * An object that can be returned by a middleware to signify\n     * that the middleware is being terminated.\n     *\n     * @type {object}\n     * @property {object} middleware.TERMINATOR\n     */\n    Object.defineProperty(videojs, 'middleware', {\n        value: {},\n        writeable: false,\n        enumerable: true\n    });\n    Object.defineProperty(videojs.middleware, 'TERMINATOR', {\n        value: TERMINATOR,\n        writeable: false,\n        enumerable: true\n    });\n\n    /**\n     * A reference to the {@link module:browser|browser utility module} as an object.\n     *\n     * @type {Object}\n     * @see  {@link module:browser|browser}\n     */\n    videojs.browser = browser;\n\n    /**\n     * A reference to the {@link module:obj|obj utility module} as an object.\n     *\n     * @type {Object}\n     * @see  {@link module:obj|obj}\n     */\n    videojs.obj = Obj;\n\n    /**\n     * Deprecated reference to the {@link module:obj.merge|merge function}\n     *\n     * @type {Function}\n     * @see {@link module:obj.merge|merge}\n     * @deprecated Deprecated and will be removed in 9.0. Please use videojs.obj.merge instead.\n     */\n    videojs.mergeOptions = deprecateForMajor(9, 'videojs.mergeOptions', 'videojs.obj.merge', merge$2);\n\n    /**\n     * Deprecated reference to the {@link module:obj.defineLazyProperty|defineLazyProperty function}\n     *\n     * @type {Function}\n     * @see {@link module:obj.defineLazyProperty|defineLazyProperty}\n     * @deprecated Deprecated and will be removed in 9.0. Please use videojs.obj.defineLazyProperty instead.\n     */\n    videojs.defineLazyProperty = deprecateForMajor(9, 'videojs.defineLazyProperty', 'videojs.obj.defineLazyProperty', defineLazyProperty);\n\n    /**\n     * Deprecated reference to the {@link module:fn.bind_|fn.bind_ function}\n     *\n     * @type {Function}\n     * @see {@link module:fn.bind_|fn.bind_}\n     * @deprecated Deprecated and will be removed in 9.0. Please use native Function.prototype.bind instead.\n     */\n    videojs.bind = deprecateForMajor(9, 'videojs.bind', 'native Function.prototype.bind', bind_);\n    videojs.registerPlugin = Plugin.registerPlugin;\n    videojs.deregisterPlugin = Plugin.deregisterPlugin;\n\n    /**\n     * Deprecated method to register a plugin with Video.js\n     *\n     * @deprecated Deprecated and will be removed in 9.0. Use videojs.registerPlugin() instead.\n     *\n     * @param {string} name\n     *        The plugin name\n     *\n     * @param {typeof Plugin|Function} plugin\n     *         The plugin sub-class or function\n     *\n     * @return {typeof Plugin|Function}\n     */\n    videojs.plugin = (name, plugin) => {\n        log$1.warn('videojs.plugin() is deprecated; use videojs.registerPlugin() instead');\n        return Plugin.registerPlugin(name, plugin);\n    };\n    videojs.getPlugins = Plugin.getPlugins;\n    videojs.getPlugin = Plugin.getPlugin;\n    videojs.getPluginVersion = Plugin.getPluginVersion;\n\n    /**\n     * Adding languages so that they're available to all players.\n     * Example: `videojs.addLanguage('es', { 'Hello': 'Hola' });`\n     *\n     * @param {string} code\n     *        The language code or dictionary property\n     *\n     * @param {Object} data\n     *        The data values to be translated\n     *\n     * @return {Object}\n     *         The resulting language dictionary object\n     */\n    videojs.addLanguage = function (code, data) {\n        code = ('' + code).toLowerCase();\n        videojs.options.languages = merge$2(videojs.options.languages, {\n            [code]: data\n        });\n        return videojs.options.languages[code];\n    };\n\n    /**\n     * A reference to the {@link module:log|log utility module} as an object.\n     *\n     * @type {Function}\n     * @see  {@link module:log|log}\n     */\n    videojs.log = log$1;\n    videojs.createLogger = createLogger;\n\n    /**\n     * A reference to the {@link module:time|time utility module} as an object.\n     *\n     * @type {Object}\n     * @see {@link module:time|time}\n     */\n    videojs.time = Time;\n\n    /**\n     * Deprecated reference to the {@link module:time.createTimeRanges|createTimeRanges function}\n     *\n     * @type {Function}\n     * @see {@link module:time.createTimeRanges|createTimeRanges}\n     * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.createTimeRanges instead.\n     */\n    videojs.createTimeRange = deprecateForMajor(9, 'videojs.createTimeRange', 'videojs.time.createTimeRanges', createTimeRanges$1);\n\n    /**\n     * Deprecated reference to the {@link module:time.createTimeRanges|createTimeRanges function}\n     *\n     * @type {Function}\n     * @see {@link module:time.createTimeRanges|createTimeRanges}\n     * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.createTimeRanges instead.\n     */\n    videojs.createTimeRanges = deprecateForMajor(9, 'videojs.createTimeRanges', 'videojs.time.createTimeRanges', createTimeRanges$1);\n\n    /**\n     * Deprecated reference to the {@link module:time.formatTime|formatTime function}\n     *\n     * @type {Function}\n     * @see {@link module:time.formatTime|formatTime}\n     * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.format instead.\n     */\n    videojs.formatTime = deprecateForMajor(9, 'videojs.formatTime', 'videojs.time.formatTime', formatTime);\n\n    /**\n     * Deprecated reference to the {@link module:time.setFormatTime|setFormatTime function}\n     *\n     * @type {Function}\n     * @see {@link module:time.setFormatTime|setFormatTime}\n     * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.setFormat instead.\n     */\n    videojs.setFormatTime = deprecateForMajor(9, 'videojs.setFormatTime', 'videojs.time.setFormatTime', setFormatTime);\n\n    /**\n     * Deprecated reference to the {@link module:time.resetFormatTime|resetFormatTime function}\n     *\n     * @type {Function}\n     * @see {@link module:time.resetFormatTime|resetFormatTime}\n     * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.resetFormat instead.\n     */\n    videojs.resetFormatTime = deprecateForMajor(9, 'videojs.resetFormatTime', 'videojs.time.resetFormatTime', resetFormatTime);\n\n    /**\n     * Deprecated reference to the {@link module:url.parseUrl|Url.parseUrl function}\n     *\n     * @type {Function}\n     * @see {@link module:url.parseUrl|parseUrl}\n     * @deprecated Deprecated and will be removed in 9.0. Please use videojs.url.parseUrl instead.\n     */\n    videojs.parseUrl = deprecateForMajor(9, 'videojs.parseUrl', 'videojs.url.parseUrl', parseUrl);\n\n    /**\n     * Deprecated reference to the {@link module:url.isCrossOrigin|Url.isCrossOrigin function}\n     *\n     * @type {Function}\n     * @see {@link module:url.isCrossOrigin|isCrossOrigin}\n     * @deprecated Deprecated and will be removed in 9.0. Please use videojs.url.isCrossOrigin instead.\n     */\n    videojs.isCrossOrigin = deprecateForMajor(9, 'videojs.isCrossOrigin', 'videojs.url.isCrossOrigin', isCrossOrigin);\n    videojs.EventTarget = EventTarget$2;\n    videojs.any = any;\n    videojs.on = on;\n    videojs.one = one;\n    videojs.off = off;\n    videojs.trigger = trigger;\n\n    /**\n     * A cross-browser XMLHttpRequest wrapper.\n     *\n     * @function\n     * @param    {Object} options\n     *           Settings for the request.\n     *\n     * @return   {XMLHttpRequest|XDomainRequest}\n     *           The request object.\n     *\n     * @see      https://github.com/Raynos/xhr\n     */\n    videojs.xhr = lib;\n    videojs.TextTrack = TextTrack;\n    videojs.AudioTrack = AudioTrack;\n    videojs.VideoTrack = VideoTrack;\n    ['isEl', 'isTextNode', 'createEl', 'hasClass', 'addClass', 'removeClass', 'toggleClass', 'setAttributes', 'getAttributes', 'emptyEl', 'appendContent', 'insertContent'].forEach(k => {\n        videojs[k] = function () {\n            log$1.warn(`videojs.${k}() is deprecated; use videojs.dom.${k}() instead`);\n            return Dom[k].apply(null, arguments);\n        };\n    });\n    videojs.computedStyle = deprecateForMajor(9, 'videojs.computedStyle', 'videojs.dom.computedStyle', computedStyle);\n\n    /**\n     * A reference to the {@link module:dom|DOM utility module} as an object.\n     *\n     * @type {Object}\n     * @see {@link module:dom|dom}\n     */\n    videojs.dom = Dom;\n\n    /**\n     * A reference to the {@link module:fn|fn utility module} as an object.\n     *\n     * @type {Object}\n     * @see {@link module:fn|fn}\n     */\n    videojs.fn = Fn;\n\n    /**\n     * A reference to the {@link module:num|num utility module} as an object.\n     *\n     * @type {Object}\n     * @see {@link module:num|num}\n     */\n    videojs.num = Num;\n\n    /**\n     * A reference to the {@link module:str|str utility module} as an object.\n     *\n     * @type {Object}\n     * @see {@link module:str|str}\n     */\n    videojs.str = Str;\n\n    /**\n     * A reference to the {@link module:url|URL utility module} as an object.\n     *\n     * @type {Object}\n     * @see {@link module:url|url}\n     */\n    videojs.url = Url;\n\n    createCommonjsModule(function (module, exports) {\n        /*! @name videojs-contrib-quality-levels @version 4.0.0 @license Apache-2.0 */\n        (function (global, factory) {\n            module.exports = factory(videojs) ;\n        })(commonjsGlobal, function (videojs) {\n\n            function _interopDefaultLegacy(e) {\n                return e && typeof e === 'object' && 'default' in e ? e : {\n                    'default': e\n                };\n            }\n            var videojs__default = /*#__PURE__*/_interopDefaultLegacy(videojs);\n\n            /**\n             * A single QualityLevel.\n             *\n             * interface QualityLevel {\n             *   readonly attribute DOMString id;\n             *            attribute DOMString label;\n             *   readonly attribute long width;\n             *   readonly attribute long height;\n             *   readonly attribute long bitrate;\n             *            attribute boolean enabled;\n             * };\n             *\n             * @class QualityLevel\n             */\n            class QualityLevel {\n                /**\n                 * Creates a QualityLevel\n                 *\n                 * @param {Representation|Object} representation The representation of the quality level\n                 * @param {string}   representation.id        Unique id of the QualityLevel\n                 * @param {number=}  representation.width     Resolution width of the QualityLevel\n                 * @param {number=}  representation.height    Resolution height of the QualityLevel\n                 * @param {number}   representation.bandwidth Bitrate of the QualityLevel\n                 * @param {number=}  representation.frameRate Frame-rate of the QualityLevel\n                 * @param {Function} representation.enabled   Callback to enable/disable QualityLevel\n                 */\n                constructor(representation) {\n                    let level = this; // eslint-disable-line\n\n                    level.id = representation.id;\n                    level.label = level.id;\n                    level.width = representation.width;\n                    level.height = representation.height;\n                    level.bitrate = representation.bandwidth;\n                    level.frameRate = representation.frameRate;\n                    level.enabled_ = representation.enabled;\n                    Object.defineProperty(level, 'enabled', {\n                        /**\n                         * Get whether the QualityLevel is enabled.\n                         *\n                         * @return {boolean} True if the QualityLevel is enabled.\n                         */\n                        get() {\n                            return level.enabled_();\n                        },\n                        /**\n                         * Enable or disable the QualityLevel.\n                         *\n                         * @param {boolean} enable true to enable QualityLevel, false to disable.\n                         */\n                        set(enable) {\n                            level.enabled_(enable);\n                        }\n                    });\n                    return level;\n                }\n            }\n\n            /**\n             * A list of QualityLevels.\n             *\n             * interface QualityLevelList : EventTarget {\n             *   getter QualityLevel (unsigned long index);\n             *   readonly attribute unsigned long length;\n             *   readonly attribute long selectedIndex;\n             *\n             *   void addQualityLevel(QualityLevel qualityLevel)\n             *   void removeQualityLevel(QualityLevel remove)\n             *   QualityLevel? getQualityLevelById(DOMString id);\n             *\n             *   attribute EventHandler onchange;\n             *   attribute EventHandler onaddqualitylevel;\n             *   attribute EventHandler onremovequalitylevel;\n             * };\n             *\n             * @extends videojs.EventTarget\n             * @class QualityLevelList\n             */\n\n            class QualityLevelList extends videojs__default['default'].EventTarget {\n                /**\n                 * Creates a QualityLevelList.\n                 */\n                constructor() {\n                    super();\n                    let list = this; // eslint-disable-line\n\n                    list.levels_ = [];\n                    list.selectedIndex_ = -1;\n                    /**\n                     * Get the index of the currently selected QualityLevel.\n                     *\n                     * @returns {number} The index of the selected QualityLevel. -1 if none selected.\n                     * @readonly\n                     */\n\n                    Object.defineProperty(list, 'selectedIndex', {\n                        get() {\n                            return list.selectedIndex_;\n                        }\n                    });\n                    /**\n                     * Get the length of the list of QualityLevels.\n                     *\n                     * @returns {number} The length of the list.\n                     * @readonly\n                     */\n\n                    Object.defineProperty(list, 'length', {\n                        get() {\n                            return list.levels_.length;\n                        }\n                    });\n                    list[Symbol.iterator] = () => list.levels_.values();\n                    return list;\n                }\n                /**\n                 * Adds a quality level to the list.\n                 *\n                 * @param {Representation|Object} representation The representation of the quality level\n                 * @param {string}   representation.id        Unique id of the QualityLevel\n                 * @param {number=}  representation.width     Resolution width of the QualityLevel\n                 * @param {number=}  representation.height    Resolution height of the QualityLevel\n                 * @param {number}   representation.bandwidth Bitrate of the QualityLevel\n                 * @param {number=}  representation.frameRate Frame-rate of the QualityLevel\n                 * @param {Function} representation.enabled   Callback to enable/disable QualityLevel\n                 * @return {QualityLevel} the QualityLevel added to the list\n                 * @method addQualityLevel\n                 */\n\n                addQualityLevel(representation) {\n                    let qualityLevel = this.getQualityLevelById(representation.id); // Do not add duplicate quality levels\n\n                    if (qualityLevel) {\n                        return qualityLevel;\n                    }\n                    const index = this.levels_.length;\n                    qualityLevel = new QualityLevel(representation);\n                    if (!('' + index in this)) {\n                        Object.defineProperty(this, index, {\n                            get() {\n                                return this.levels_[index];\n                            }\n                        });\n                    }\n                    this.levels_.push(qualityLevel);\n                    this.trigger({\n                        qualityLevel,\n                        type: 'addqualitylevel'\n                    });\n                    return qualityLevel;\n                }\n                /**\n                 * Removes a quality level from the list.\n                 *\n                 * @param {QualityLevel} qualityLevel The QualityLevel to remove from the list.\n                 * @return {QualityLevel|null} the QualityLevel removed or null if nothing removed\n                 * @method removeQualityLevel\n                 */\n\n                removeQualityLevel(qualityLevel) {\n                    let removed = null;\n                    for (let i = 0, l = this.length; i < l; i++) {\n                        if (this[i] === qualityLevel) {\n                            removed = this.levels_.splice(i, 1)[0];\n                            if (this.selectedIndex_ === i) {\n                                this.selectedIndex_ = -1;\n                            } else if (this.selectedIndex_ > i) {\n                                this.selectedIndex_--;\n                            }\n                            break;\n                        }\n                    }\n                    if (removed) {\n                        this.trigger({\n                            qualityLevel,\n                            type: 'removequalitylevel'\n                        });\n                    }\n                    return removed;\n                }\n                /**\n                 * Searches for a QualityLevel with the given id.\n                 *\n                 * @param {string} id The id of the QualityLevel to find.\n                 * @return {QualityLevel|null} The QualityLevel with id, or null if not found.\n                 * @method getQualityLevelById\n                 */\n\n                getQualityLevelById(id) {\n                    for (let i = 0, l = this.length; i < l; i++) {\n                        const level = this[i];\n                        if (level.id === id) {\n                            return level;\n                        }\n                    }\n                    return null;\n                }\n                /**\n                 * Resets the list of QualityLevels to empty\n                 *\n                 * @method dispose\n                 */\n\n                dispose() {\n                    this.selectedIndex_ = -1;\n                    this.levels_.length = 0;\n                }\n            }\n            /**\n             * change - The selected QualityLevel has changed.\n             * addqualitylevel - A QualityLevel has been added to the QualityLevelList.\n             * removequalitylevel - A QualityLevel has been removed from the QualityLevelList.\n             */\n\n            QualityLevelList.prototype.allowedEvents_ = {\n                change: 'change',\n                addqualitylevel: 'addqualitylevel',\n                removequalitylevel: 'removequalitylevel'\n            }; // emulate attribute EventHandler support to allow for feature detection\n\n            for (const event in QualityLevelList.prototype.allowedEvents_) {\n                QualityLevelList.prototype['on' + event] = null;\n            }\n            var version = \"4.0.0\";\n\n            /**\n             * Initialization function for the qualityLevels plugin. Sets up the QualityLevelList and\n             * event handlers.\n             *\n             * @param {Player} player Player object.\n             * @param {Object} options Plugin options object.\n             * @return {QualityLevelList} a list of QualityLevels\n             */\n\n            const initPlugin = function (player, options) {\n                const originalPluginFn = player.qualityLevels;\n                const qualityLevelList = new QualityLevelList();\n                const disposeHandler = function () {\n                    qualityLevelList.dispose();\n                    player.qualityLevels = originalPluginFn;\n                    player.off('dispose', disposeHandler);\n                };\n                player.on('dispose', disposeHandler);\n                player.qualityLevels = () => qualityLevelList;\n                player.qualityLevels.VERSION = version;\n                return qualityLevelList;\n            };\n            /**\n             * A video.js plugin.\n             *\n             * In the plugin function, the value of `this` is a video.js `Player`\n             * instance. You cannot rely on the player being in a \"ready\" state here,\n             * depending on how the plugin is invoked. This may or may not be important\n             * to you; if not, remove the wait for \"ready\"!\n             *\n             * @param {Object} options Plugin options object\n             * @return {QualityLevelList} a list of QualityLevels\n             */\n\n            const qualityLevels = function (options) {\n                return initPlugin(this, videojs__default['default'].obj.merge({}, options));\n            }; // Register the plugin with video.js.\n\n            videojs__default['default'].registerPlugin('qualityLevels', qualityLevels); // Include the version number.\n\n            qualityLevels.VERSION = version;\n            return qualityLevels;\n        });\n    });\n\n    var urlToolkit = createCommonjsModule(function (module, exports) {\n        // see https://tools.ietf.org/html/rfc1808\n\n        (function (root) {\n            var URL_REGEX = /^(?=((?:[a-zA-Z0-9+\\-.]+:)?))\\1(?=((?:\\/\\/[^\\/?#]*)?))\\2(?=((?:(?:[^?#\\/]*\\/)*[^;?#\\/]*)?))\\3((?:;[^?#]*)?)(\\?[^#]*)?(#[^]*)?$/;\n            var FIRST_SEGMENT_REGEX = /^(?=([^\\/?#]*))\\1([^]*)$/;\n            var SLASH_DOT_REGEX = /(?:\\/|^)\\.(?=\\/)/g;\n            var SLASH_DOT_DOT_REGEX = /(?:\\/|^)\\.\\.\\/(?!\\.\\.\\/)[^\\/]*(?=\\/)/g;\n            var URLToolkit = {\n                // If opts.alwaysNormalize is true then the path will always be normalized even when it starts with / or //\n                // E.g\n                // With opts.alwaysNormalize = false (default, spec compliant)\n                // http://a.com/b/cd + /e/f/../g => http://a.com/e/f/../g\n                // With opts.alwaysNormalize = true (not spec compliant)\n                // http://a.com/b/cd + /e/f/../g => http://a.com/e/g\n                buildAbsoluteURL: function (baseURL, relativeURL, opts) {\n                    opts = opts || {};\n                    // remove any remaining space and CRLF\n                    baseURL = baseURL.trim();\n                    relativeURL = relativeURL.trim();\n                    if (!relativeURL) {\n                        // 2a) If the embedded URL is entirely empty, it inherits the\n                        // entire base URL (i.e., is set equal to the base URL)\n                        // and we are done.\n                        if (!opts.alwaysNormalize) {\n                            return baseURL;\n                        }\n                        var basePartsForNormalise = URLToolkit.parseURL(baseURL);\n                        if (!basePartsForNormalise) {\n                            throw new Error('Error trying to parse base URL.');\n                        }\n                        basePartsForNormalise.path = URLToolkit.normalizePath(basePartsForNormalise.path);\n                        return URLToolkit.buildURLFromParts(basePartsForNormalise);\n                    }\n                    var relativeParts = URLToolkit.parseURL(relativeURL);\n                    if (!relativeParts) {\n                        throw new Error('Error trying to parse relative URL.');\n                    }\n                    if (relativeParts.scheme) {\n                        // 2b) If the embedded URL starts with a scheme name, it is\n                        // interpreted as an absolute URL and we are done.\n                        if (!opts.alwaysNormalize) {\n                            return relativeURL;\n                        }\n                        relativeParts.path = URLToolkit.normalizePath(relativeParts.path);\n                        return URLToolkit.buildURLFromParts(relativeParts);\n                    }\n                    var baseParts = URLToolkit.parseURL(baseURL);\n                    if (!baseParts) {\n                        throw new Error('Error trying to parse base URL.');\n                    }\n                    if (!baseParts.netLoc && baseParts.path && baseParts.path[0] !== '/') {\n                        // If netLoc missing and path doesn't start with '/', assume everthing before the first '/' is the netLoc\n                        // This causes 'example.com/a' to be handled as '//example.com/a' instead of '/example.com/a'\n                        var pathParts = FIRST_SEGMENT_REGEX.exec(baseParts.path);\n                        baseParts.netLoc = pathParts[1];\n                        baseParts.path = pathParts[2];\n                    }\n                    if (baseParts.netLoc && !baseParts.path) {\n                        baseParts.path = '/';\n                    }\n                    var builtParts = {\n                        // 2c) Otherwise, the embedded URL inherits the scheme of\n                        // the base URL.\n                        scheme: baseParts.scheme,\n                        netLoc: relativeParts.netLoc,\n                        path: null,\n                        params: relativeParts.params,\n                        query: relativeParts.query,\n                        fragment: relativeParts.fragment\n                    };\n                    if (!relativeParts.netLoc) {\n                        // 3) If the embedded URL's <net_loc> is non-empty, we skip to\n                        // Step 7.  Otherwise, the embedded URL inherits the <net_loc>\n                        // (if any) of the base URL.\n                        builtParts.netLoc = baseParts.netLoc;\n                        // 4) If the embedded URL path is preceded by a slash \"/\", the\n                        // path is not relative and we skip to Step 7.\n                        if (relativeParts.path[0] !== '/') {\n                            if (!relativeParts.path) {\n                                // 5) If the embedded URL path is empty (and not preceded by a\n                                // slash), then the embedded URL inherits the base URL path\n                                builtParts.path = baseParts.path;\n                                // 5a) if the embedded URL's <params> is non-empty, we skip to\n                                // step 7; otherwise, it inherits the <params> of the base\n                                // URL (if any) and\n                                if (!relativeParts.params) {\n                                    builtParts.params = baseParts.params;\n                                    // 5b) if the embedded URL's <query> is non-empty, we skip to\n                                    // step 7; otherwise, it inherits the <query> of the base\n                                    // URL (if any) and we skip to step 7.\n                                    if (!relativeParts.query) {\n                                        builtParts.query = baseParts.query;\n                                    }\n                                }\n                            } else {\n                                // 6) The last segment of the base URL's path (anything\n                                // following the rightmost slash \"/\", or the entire path if no\n                                // slash is present) is removed and the embedded URL's path is\n                                // appended in its place.\n                                var baseURLPath = baseParts.path;\n                                var newPath = baseURLPath.substring(0, baseURLPath.lastIndexOf('/') + 1) + relativeParts.path;\n                                builtParts.path = URLToolkit.normalizePath(newPath);\n                            }\n                        }\n                    }\n                    if (builtParts.path === null) {\n                        builtParts.path = opts.alwaysNormalize ? URLToolkit.normalizePath(relativeParts.path) : relativeParts.path;\n                    }\n                    return URLToolkit.buildURLFromParts(builtParts);\n                },\n                parseURL: function (url) {\n                    var parts = URL_REGEX.exec(url);\n                    if (!parts) {\n                        return null;\n                    }\n                    return {\n                        scheme: parts[1] || '',\n                        netLoc: parts[2] || '',\n                        path: parts[3] || '',\n                        params: parts[4] || '',\n                        query: parts[5] || '',\n                        fragment: parts[6] || ''\n                    };\n                },\n                normalizePath: function (path) {\n                    // The following operations are\n                    // then applied, in order, to the new path:\n                    // 6a) All occurrences of \"./\", where \".\" is a complete path\n                    // segment, are removed.\n                    // 6b) If the path ends with \".\" as a complete path segment,\n                    // that \".\" is removed.\n                    path = path.split('').reverse().join('').replace(SLASH_DOT_REGEX, '');\n                    // 6c) All occurrences of \"<segment>/../\", where <segment> is a\n                    // complete path segment not equal to \"..\", are removed.\n                    // Removal of these path segments is performed iteratively,\n                    // removing the leftmost matching pattern on each iteration,\n                    // until no matching pattern remains.\n                    // 6d) If the path ends with \"<segment>/..\", where <segment> is a\n                    // complete path segment not equal to \"..\", that\n                    // \"<segment>/..\" is removed.\n                    while (path.length !== (path = path.replace(SLASH_DOT_DOT_REGEX, '')).length) {}\n                    return path.split('').reverse().join('');\n                },\n                buildURLFromParts: function (parts) {\n                    return parts.scheme + parts.netLoc + parts.path + parts.params + parts.query + parts.fragment;\n                }\n            };\n            module.exports = URLToolkit;\n        })();\n    });\n\n    var DEFAULT_LOCATION = 'http://example.com';\n    var resolveUrl$1 = function resolveUrl(baseUrl, relativeUrl) {\n        // return early if we don't need to resolve\n        if (/^[a-z]+:/i.test(relativeUrl)) {\n            return relativeUrl;\n        } // if baseUrl is a data URI, ignore it and resolve everything relative to window.location\n\n        if (/^data:/.test(baseUrl)) {\n            baseUrl = window.location && window.location.href || '';\n        } // IE11 supports URL but not the URL constructor\n        // feature detect the behavior we want\n\n        var nativeURL = typeof window.URL === 'function';\n        var protocolLess = /^\\/\\//.test(baseUrl); // remove location if window.location isn't available (i.e. we're in node)\n        // and if baseUrl isn't an absolute url\n\n        var removeLocation = !window.location && !/\\/\\//i.test(baseUrl); // if the base URL is relative then combine with the current location\n\n        if (nativeURL) {\n            baseUrl = new window.URL(baseUrl, window.location || DEFAULT_LOCATION);\n        } else if (!/\\/\\//i.test(baseUrl)) {\n            baseUrl = urlToolkit.buildAbsoluteURL(window.location && window.location.href || '', baseUrl);\n        }\n        if (nativeURL) {\n            var newUrl = new URL(relativeUrl, baseUrl); // if we're a protocol-less url, remove the protocol\n            // and if we're location-less, remove the location\n            // otherwise, return the url unmodified\n\n            if (removeLocation) {\n                return newUrl.href.slice(DEFAULT_LOCATION.length);\n            } else if (protocolLess) {\n                return newUrl.href.slice(newUrl.protocol.length);\n            }\n            return newUrl.href;\n        }\n        return urlToolkit.buildAbsoluteURL(baseUrl, relativeUrl);\n    };\n\n    /**\n     * @file stream.js\n     */\n\n    /**\n     * A lightweight readable stream implemention that handles event dispatching.\n     *\n     * @class Stream\n     */\n    var Stream = /*#__PURE__*/function () {\n        function Stream() {\n            this.listeners = {};\n        }\n        /**\n         * Add a listener for a specified event type.\n         *\n         * @param {string} type the event name\n         * @param {Function} listener the callback to be invoked when an event of\n         * the specified type occurs\n         */\n\n        var _proto = Stream.prototype;\n        _proto.on = function on(type, listener) {\n            if (!this.listeners[type]) {\n                this.listeners[type] = [];\n            }\n            this.listeners[type].push(listener);\n        }\n        /**\n         * Remove a listener for a specified event type.\n         *\n         * @param {string} type the event name\n         * @param {Function} listener  a function previously registered for this\n         * type of event through `on`\n         * @return {boolean} if we could turn it off or not\n         */;\n\n        _proto.off = function off(type, listener) {\n            if (!this.listeners[type]) {\n                return false;\n            }\n            var index = this.listeners[type].indexOf(listener); // TODO: which is better?\n            // In Video.js we slice listener functions\n            // on trigger so that it does not mess up the order\n            // while we loop through.\n            //\n            // Here we slice on off so that the loop in trigger\n            // can continue using it's old reference to loop without\n            // messing up the order.\n\n            this.listeners[type] = this.listeners[type].slice(0);\n            this.listeners[type].splice(index, 1);\n            return index > -1;\n        }\n        /**\n         * Trigger an event of the specified type on this stream. Any additional\n         * arguments to this function are passed as parameters to event listeners.\n         *\n         * @param {string} type the event name\n         */;\n\n        _proto.trigger = function trigger(type) {\n            var callbacks = this.listeners[type];\n            if (!callbacks) {\n                return;\n            } // Slicing the arguments on every invocation of this method\n            // can add a significant amount of overhead. Avoid the\n            // intermediate object creation for the common case of a\n            // single callback argument\n\n            if (arguments.length === 2) {\n                var length = callbacks.length;\n                for (var i = 0; i < length; ++i) {\n                    callbacks[i].call(this, arguments[1]);\n                }\n            } else {\n                var args = Array.prototype.slice.call(arguments, 1);\n                var _length = callbacks.length;\n                for (var _i = 0; _i < _length; ++_i) {\n                    callbacks[_i].apply(this, args);\n                }\n            }\n        }\n        /**\n         * Destroys the stream and cleans up.\n         */;\n\n        _proto.dispose = function dispose() {\n            this.listeners = {};\n        }\n        /**\n         * Forwards all `data` events on this stream to the destination stream. The\n         * destination stream should provide a method `push` to receive the data\n         * events as they arrive.\n         *\n         * @param {Stream} destination the stream that will receive all `data` events\n         * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n         */;\n\n        _proto.pipe = function pipe(destination) {\n            this.on('data', function (data) {\n                destination.push(data);\n            });\n        };\n        return Stream;\n    }();\n\n    var atob$1 = function atob(s) {\n        return window.atob ? window.atob(s) : Buffer.from(s, 'base64').toString('binary');\n    };\n    function decodeB64ToUint8Array$1(b64Text) {\n        var decodedString = atob$1(b64Text);\n        var array = new Uint8Array(decodedString.length);\n        for (var i = 0; i < decodedString.length; i++) {\n            array[i] = decodedString.charCodeAt(i);\n        }\n        return array;\n    }\n\n    /*! @name m3u8-parser @version 7.1.0 @license Apache-2.0 */\n\n    /**\n     * @file m3u8/line-stream.js\n     */\n    /**\n     * A stream that buffers string input and generates a `data` event for each\n     * line.\n     *\n     * @class LineStream\n     * @extends Stream\n     */\n\n    class LineStream extends Stream {\n        constructor() {\n            super();\n            this.buffer = '';\n        }\n        /**\n         * Add new data to be parsed.\n         *\n         * @param {string} data the text to process\n         */\n\n        push(data) {\n            let nextNewline;\n            this.buffer += data;\n            nextNewline = this.buffer.indexOf('\\n');\n            for (; nextNewline > -1; nextNewline = this.buffer.indexOf('\\n')) {\n                this.trigger('data', this.buffer.substring(0, nextNewline));\n                this.buffer = this.buffer.substring(nextNewline + 1);\n            }\n        }\n    }\n    const TAB = String.fromCharCode(0x09);\n    const parseByterange = function (byterangeString) {\n        // optionally match and capture 0+ digits before `@`\n        // optionally match and capture 0+ digits after `@`\n        const match = /([0-9.]*)?@?([0-9.]*)?/.exec(byterangeString || '');\n        const result = {};\n        if (match[1]) {\n            result.length = parseInt(match[1], 10);\n        }\n        if (match[2]) {\n            result.offset = parseInt(match[2], 10);\n        }\n        return result;\n    };\n    /**\n     * \"forgiving\" attribute list psuedo-grammar:\n     * attributes -> keyvalue (',' keyvalue)*\n     * keyvalue   -> key '=' value\n     * key        -> [^=]*\n     * value      -> '\"' [^\"]* '\"' | [^,]*\n     */\n\n    const attributeSeparator = function () {\n        const key = '[^=]*';\n        const value = '\"[^\"]*\"|[^,]*';\n        const keyvalue = '(?:' + key + ')=(?:' + value + ')';\n        return new RegExp('(?:^|,)(' + keyvalue + ')');\n    };\n    /**\n     * Parse attributes from a line given the separator\n     *\n     * @param {string} attributes the attribute line to parse\n     */\n\n    const parseAttributes$1 = function (attributes) {\n        const result = {};\n        if (!attributes) {\n            return result;\n        } // split the string using attributes as the separator\n\n        const attrs = attributes.split(attributeSeparator());\n        let i = attrs.length;\n        let attr;\n        while (i--) {\n            // filter out unmatched portions of the string\n            if (attrs[i] === '') {\n                continue;\n            } // split the key and value\n\n            attr = /([^=]*)=(.*)/.exec(attrs[i]).slice(1); // trim whitespace and remove optional quotes around the value\n\n            attr[0] = attr[0].replace(/^\\s+|\\s+$/g, '');\n            attr[1] = attr[1].replace(/^\\s+|\\s+$/g, '');\n            attr[1] = attr[1].replace(/^['\"](.*)['\"]$/g, '$1');\n            result[attr[0]] = attr[1];\n        }\n        return result;\n    };\n    /**\n     * A line-level M3U8 parser event stream. It expects to receive input one\n     * line at a time and performs a context-free parse of its contents. A stream\n     * interpretation of a manifest can be useful if the manifest is expected to\n     * be too large to fit comfortably into memory or the entirety of the input\n     * is not immediately available. Otherwise, it's probably much easier to work\n     * with a regular `Parser` object.\n     *\n     * Produces `data` events with an object that captures the parser's\n     * interpretation of the input. That object has a property `tag` that is one\n     * of `uri`, `comment`, or `tag`. URIs only have a single additional\n     * property, `line`, which captures the entirety of the input without\n     * interpretation. Comments similarly have a single additional property\n     * `text` which is the input without the leading `#`.\n     *\n     * Tags always have a property `tagType` which is the lower-cased version of\n     * the M3U8 directive without the `#EXT` or `#EXT-X-` prefix. For instance,\n     * `#EXT-X-MEDIA-SEQUENCE` becomes `media-sequence` when parsed. Unrecognized\n     * tags are given the tag type `unknown` and a single additional property\n     * `data` with the remainder of the input.\n     *\n     * @class ParseStream\n     * @extends Stream\n     */\n\n    class ParseStream extends Stream {\n        constructor() {\n            super();\n            this.customParsers = [];\n            this.tagMappers = [];\n        }\n        /**\n         * Parses an additional line of input.\n         *\n         * @param {string} line a single line of an M3U8 file to parse\n         */\n\n        push(line) {\n            let match;\n            let event; // strip whitespace\n\n            line = line.trim();\n            if (line.length === 0) {\n                // ignore empty lines\n                return;\n            } // URIs\n\n            if (line[0] !== '#') {\n                this.trigger('data', {\n                    type: 'uri',\n                    uri: line\n                });\n                return;\n            } // map tags\n\n            const newLines = this.tagMappers.reduce((acc, mapper) => {\n                const mappedLine = mapper(line); // skip if unchanged\n\n                if (mappedLine === line) {\n                    return acc;\n                }\n                return acc.concat([mappedLine]);\n            }, [line]);\n            newLines.forEach(newLine => {\n                for (let i = 0; i < this.customParsers.length; i++) {\n                    if (this.customParsers[i].call(this, newLine)) {\n                        return;\n                    }\n                } // Comments\n\n                if (newLine.indexOf('#EXT') !== 0) {\n                    this.trigger('data', {\n                        type: 'comment',\n                        text: newLine.slice(1)\n                    });\n                    return;\n                } // strip off any carriage returns here so the regex matching\n                // doesn't have to account for them.\n\n                newLine = newLine.replace('\\r', ''); // Tags\n\n                match = /^#EXTM3U/.exec(newLine);\n                if (match) {\n                    this.trigger('data', {\n                        type: 'tag',\n                        tagType: 'm3u'\n                    });\n                    return;\n                }\n                match = /^#EXTINF:([0-9\\.]*)?,?(.*)?$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'inf'\n                    };\n                    if (match[1]) {\n                        event.duration = parseFloat(match[1]);\n                    }\n                    if (match[2]) {\n                        event.title = match[2];\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-TARGETDURATION:([0-9.]*)?/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'targetduration'\n                    };\n                    if (match[1]) {\n                        event.duration = parseInt(match[1], 10);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-VERSION:([0-9.]*)?/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'version'\n                    };\n                    if (match[1]) {\n                        event.version = parseInt(match[1], 10);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-MEDIA-SEQUENCE:(\\-?[0-9.]*)?/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'media-sequence'\n                    };\n                    if (match[1]) {\n                        event.number = parseInt(match[1], 10);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-DISCONTINUITY-SEQUENCE:(\\-?[0-9.]*)?/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'discontinuity-sequence'\n                    };\n                    if (match[1]) {\n                        event.number = parseInt(match[1], 10);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-PLAYLIST-TYPE:(.*)?$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'playlist-type'\n                    };\n                    if (match[1]) {\n                        event.playlistType = match[1];\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-BYTERANGE:(.*)?$/.exec(newLine);\n                if (match) {\n                    event = _extends$1(parseByterange(match[1]), {\n                        type: 'tag',\n                        tagType: 'byterange'\n                    });\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-ALLOW-CACHE:(YES|NO)?/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'allow-cache'\n                    };\n                    if (match[1]) {\n                        event.allowed = !/NO/.test(match[1]);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-MAP:(.*)$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'map'\n                    };\n                    if (match[1]) {\n                        const attributes = parseAttributes$1(match[1]);\n                        if (attributes.URI) {\n                            event.uri = attributes.URI;\n                        }\n                        if (attributes.BYTERANGE) {\n                            event.byterange = parseByterange(attributes.BYTERANGE);\n                        }\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-STREAM-INF:(.*)$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'stream-inf'\n                    };\n                    if (match[1]) {\n                        event.attributes = parseAttributes$1(match[1]);\n                        if (event.attributes.RESOLUTION) {\n                            const split = event.attributes.RESOLUTION.split('x');\n                            const resolution = {};\n                            if (split[0]) {\n                                resolution.width = parseInt(split[0], 10);\n                            }\n                            if (split[1]) {\n                                resolution.height = parseInt(split[1], 10);\n                            }\n                            event.attributes.RESOLUTION = resolution;\n                        }\n                        if (event.attributes.BANDWIDTH) {\n                            event.attributes.BANDWIDTH = parseInt(event.attributes.BANDWIDTH, 10);\n                        }\n                        if (event.attributes['FRAME-RATE']) {\n                            event.attributes['FRAME-RATE'] = parseFloat(event.attributes['FRAME-RATE']);\n                        }\n                        if (event.attributes['PROGRAM-ID']) {\n                            event.attributes['PROGRAM-ID'] = parseInt(event.attributes['PROGRAM-ID'], 10);\n                        }\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-MEDIA:(.*)$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'media'\n                    };\n                    if (match[1]) {\n                        event.attributes = parseAttributes$1(match[1]);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-ENDLIST/.exec(newLine);\n                if (match) {\n                    this.trigger('data', {\n                        type: 'tag',\n                        tagType: 'endlist'\n                    });\n                    return;\n                }\n                match = /^#EXT-X-DISCONTINUITY/.exec(newLine);\n                if (match) {\n                    this.trigger('data', {\n                        type: 'tag',\n                        tagType: 'discontinuity'\n                    });\n                    return;\n                }\n                match = /^#EXT-X-PROGRAM-DATE-TIME:(.*)$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'program-date-time'\n                    };\n                    if (match[1]) {\n                        event.dateTimeString = match[1];\n                        event.dateTimeObject = new Date(match[1]);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-KEY:(.*)$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'key'\n                    };\n                    if (match[1]) {\n                        event.attributes = parseAttributes$1(match[1]); // parse the IV string into a Uint32Array\n\n                        if (event.attributes.IV) {\n                            if (event.attributes.IV.substring(0, 2).toLowerCase() === '0x') {\n                                event.attributes.IV = event.attributes.IV.substring(2);\n                            }\n                            event.attributes.IV = event.attributes.IV.match(/.{8}/g);\n                            event.attributes.IV[0] = parseInt(event.attributes.IV[0], 16);\n                            event.attributes.IV[1] = parseInt(event.attributes.IV[1], 16);\n                            event.attributes.IV[2] = parseInt(event.attributes.IV[2], 16);\n                            event.attributes.IV[3] = parseInt(event.attributes.IV[3], 16);\n                            event.attributes.IV = new Uint32Array(event.attributes.IV);\n                        }\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-START:(.*)$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'start'\n                    };\n                    if (match[1]) {\n                        event.attributes = parseAttributes$1(match[1]);\n                        event.attributes['TIME-OFFSET'] = parseFloat(event.attributes['TIME-OFFSET']);\n                        event.attributes.PRECISE = /YES/.test(event.attributes.PRECISE);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-CUE-OUT-CONT:(.*)?$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'cue-out-cont'\n                    };\n                    if (match[1]) {\n                        event.data = match[1];\n                    } else {\n                        event.data = '';\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-CUE-OUT:(.*)?$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'cue-out'\n                    };\n                    if (match[1]) {\n                        event.data = match[1];\n                    } else {\n                        event.data = '';\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-CUE-IN:(.*)?$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'cue-in'\n                    };\n                    if (match[1]) {\n                        event.data = match[1];\n                    } else {\n                        event.data = '';\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-SKIP:(.*)$/.exec(newLine);\n                if (match && match[1]) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'skip'\n                    };\n                    event.attributes = parseAttributes$1(match[1]);\n                    if (event.attributes.hasOwnProperty('SKIPPED-SEGMENTS')) {\n                        event.attributes['SKIPPED-SEGMENTS'] = parseInt(event.attributes['SKIPPED-SEGMENTS'], 10);\n                    }\n                    if (event.attributes.hasOwnProperty('RECENTLY-REMOVED-DATERANGES')) {\n                        event.attributes['RECENTLY-REMOVED-DATERANGES'] = event.attributes['RECENTLY-REMOVED-DATERANGES'].split(TAB);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-PART:(.*)$/.exec(newLine);\n                if (match && match[1]) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'part'\n                    };\n                    event.attributes = parseAttributes$1(match[1]);\n                    ['DURATION'].forEach(function (key) {\n                        if (event.attributes.hasOwnProperty(key)) {\n                            event.attributes[key] = parseFloat(event.attributes[key]);\n                        }\n                    });\n                    ['INDEPENDENT', 'GAP'].forEach(function (key) {\n                        if (event.attributes.hasOwnProperty(key)) {\n                            event.attributes[key] = /YES/.test(event.attributes[key]);\n                        }\n                    });\n                    if (event.attributes.hasOwnProperty('BYTERANGE')) {\n                        event.attributes.byterange = parseByterange(event.attributes.BYTERANGE);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-SERVER-CONTROL:(.*)$/.exec(newLine);\n                if (match && match[1]) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'server-control'\n                    };\n                    event.attributes = parseAttributes$1(match[1]);\n                    ['CAN-SKIP-UNTIL', 'PART-HOLD-BACK', 'HOLD-BACK'].forEach(function (key) {\n                        if (event.attributes.hasOwnProperty(key)) {\n                            event.attributes[key] = parseFloat(event.attributes[key]);\n                        }\n                    });\n                    ['CAN-SKIP-DATERANGES', 'CAN-BLOCK-RELOAD'].forEach(function (key) {\n                        if (event.attributes.hasOwnProperty(key)) {\n                            event.attributes[key] = /YES/.test(event.attributes[key]);\n                        }\n                    });\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-PART-INF:(.*)$/.exec(newLine);\n                if (match && match[1]) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'part-inf'\n                    };\n                    event.attributes = parseAttributes$1(match[1]);\n                    ['PART-TARGET'].forEach(function (key) {\n                        if (event.attributes.hasOwnProperty(key)) {\n                            event.attributes[key] = parseFloat(event.attributes[key]);\n                        }\n                    });\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-PRELOAD-HINT:(.*)$/.exec(newLine);\n                if (match && match[1]) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'preload-hint'\n                    };\n                    event.attributes = parseAttributes$1(match[1]);\n                    ['BYTERANGE-START', 'BYTERANGE-LENGTH'].forEach(function (key) {\n                        if (event.attributes.hasOwnProperty(key)) {\n                            event.attributes[key] = parseInt(event.attributes[key], 10);\n                            const subkey = key === 'BYTERANGE-LENGTH' ? 'length' : 'offset';\n                            event.attributes.byterange = event.attributes.byterange || {};\n                            event.attributes.byterange[subkey] = event.attributes[key]; // only keep the parsed byterange object.\n\n                            delete event.attributes[key];\n                        }\n                    });\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-RENDITION-REPORT:(.*)$/.exec(newLine);\n                if (match && match[1]) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'rendition-report'\n                    };\n                    event.attributes = parseAttributes$1(match[1]);\n                    ['LAST-MSN', 'LAST-PART'].forEach(function (key) {\n                        if (event.attributes.hasOwnProperty(key)) {\n                            event.attributes[key] = parseInt(event.attributes[key], 10);\n                        }\n                    });\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-DATERANGE:(.*)$/.exec(newLine);\n                if (match && match[1]) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'daterange'\n                    };\n                    event.attributes = parseAttributes$1(match[1]);\n                    ['ID', 'CLASS'].forEach(function (key) {\n                        if (event.attributes.hasOwnProperty(key)) {\n                            event.attributes[key] = String(event.attributes[key]);\n                        }\n                    });\n                    ['START-DATE', 'END-DATE'].forEach(function (key) {\n                        if (event.attributes.hasOwnProperty(key)) {\n                            event.attributes[key] = new Date(event.attributes[key]);\n                        }\n                    });\n                    ['DURATION', 'PLANNED-DURATION'].forEach(function (key) {\n                        if (event.attributes.hasOwnProperty(key)) {\n                            event.attributes[key] = parseFloat(event.attributes[key]);\n                        }\n                    });\n                    ['END-ON-NEXT'].forEach(function (key) {\n                        if (event.attributes.hasOwnProperty(key)) {\n                            event.attributes[key] = /YES/i.test(event.attributes[key]);\n                        }\n                    });\n                    ['SCTE35-CMD', ' SCTE35-OUT', 'SCTE35-IN'].forEach(function (key) {\n                        if (event.attributes.hasOwnProperty(key)) {\n                            event.attributes[key] = event.attributes[key].toString(16);\n                        }\n                    });\n                    const clientAttributePattern = /^X-([A-Z]+-)+[A-Z]+$/;\n                    for (const key in event.attributes) {\n                        if (!clientAttributePattern.test(key)) {\n                            continue;\n                        }\n                        const isHexaDecimal = /[0-9A-Fa-f]{6}/g.test(event.attributes[key]);\n                        const isDecimalFloating = /^\\d+(\\.\\d+)?$/.test(event.attributes[key]);\n                        event.attributes[key] = isHexaDecimal ? event.attributes[key].toString(16) : isDecimalFloating ? parseFloat(event.attributes[key]) : String(event.attributes[key]);\n                    }\n                    this.trigger('data', event);\n                    return;\n                }\n                match = /^#EXT-X-INDEPENDENT-SEGMENTS/.exec(newLine);\n                if (match) {\n                    this.trigger('data', {\n                        type: 'tag',\n                        tagType: 'independent-segments'\n                    });\n                    return;\n                }\n                match = /^#EXT-X-CONTENT-STEERING:(.*)$/.exec(newLine);\n                if (match) {\n                    event = {\n                        type: 'tag',\n                        tagType: 'content-steering'\n                    };\n                    event.attributes = parseAttributes$1(match[1]);\n                    this.trigger('data', event);\n                    return;\n                } // unknown tag type\n\n                this.trigger('data', {\n                    type: 'tag',\n                    data: newLine.slice(4)\n                });\n            });\n        }\n        /**\n         * Add a parser for custom headers\n         *\n         * @param {Object}   options              a map of options for the added parser\n         * @param {RegExp}   options.expression   a regular expression to match the custom header\n         * @param {string}   options.customType   the custom type to register to the output\n         * @param {Function} [options.dataParser] function to parse the line into an object\n         * @param {boolean}  [options.segment]    should tag data be attached to the segment object\n         */\n\n        addParser({\n                      expression,\n                      customType,\n                      dataParser,\n                      segment\n                  }) {\n            if (typeof dataParser !== 'function') {\n                dataParser = line => line;\n            }\n            this.customParsers.push(line => {\n                const match = expression.exec(line);\n                if (match) {\n                    this.trigger('data', {\n                        type: 'custom',\n                        data: dataParser(line),\n                        customType,\n                        segment\n                    });\n                    return true;\n                }\n            });\n        }\n        /**\n         * Add a custom header mapper\n         *\n         * @param {Object}   options\n         * @param {RegExp}   options.expression   a regular expression to match the custom header\n         * @param {Function} options.map          function to translate tag into a different tag\n         */\n\n        addTagMapper({\n                         expression,\n                         map\n                     }) {\n            const mapFn = line => {\n                if (expression.test(line)) {\n                    return map(line);\n                }\n                return line;\n            };\n            this.tagMappers.push(mapFn);\n        }\n    }\n    const camelCase = str => str.toLowerCase().replace(/-(\\w)/g, a => a[1].toUpperCase());\n    const camelCaseKeys = function (attributes) {\n        const result = {};\n        Object.keys(attributes).forEach(function (key) {\n            result[camelCase(key)] = attributes[key];\n        });\n        return result;\n    }; // set SERVER-CONTROL hold back based upon targetDuration and partTargetDuration\n    // we need this helper because defaults are based upon targetDuration and\n    // partTargetDuration being set, but they may not be if SERVER-CONTROL appears before\n    // target durations are set.\n\n    const setHoldBack = function (manifest) {\n        const {\n            serverControl,\n            targetDuration,\n            partTargetDuration\n        } = manifest;\n        if (!serverControl) {\n            return;\n        }\n        const tag = '#EXT-X-SERVER-CONTROL';\n        const hb = 'holdBack';\n        const phb = 'partHoldBack';\n        const minTargetDuration = targetDuration && targetDuration * 3;\n        const minPartDuration = partTargetDuration && partTargetDuration * 2;\n        if (targetDuration && !serverControl.hasOwnProperty(hb)) {\n            serverControl[hb] = minTargetDuration;\n            this.trigger('info', {\n                message: `${tag} defaulting HOLD-BACK to targetDuration * 3 (${minTargetDuration}).`\n            });\n        }\n        if (minTargetDuration && serverControl[hb] < minTargetDuration) {\n            this.trigger('warn', {\n                message: `${tag} clamping HOLD-BACK (${serverControl[hb]}) to targetDuration * 3 (${minTargetDuration})`\n            });\n            serverControl[hb] = minTargetDuration;\n        } // default no part hold back to part target duration * 3\n\n        if (partTargetDuration && !serverControl.hasOwnProperty(phb)) {\n            serverControl[phb] = partTargetDuration * 3;\n            this.trigger('info', {\n                message: `${tag} defaulting PART-HOLD-BACK to partTargetDuration * 3 (${serverControl[phb]}).`\n            });\n        } // if part hold back is too small default it to part target duration * 2\n\n        if (partTargetDuration && serverControl[phb] < minPartDuration) {\n            this.trigger('warn', {\n                message: `${tag} clamping PART-HOLD-BACK (${serverControl[phb]}) to partTargetDuration * 2 (${minPartDuration}).`\n            });\n            serverControl[phb] = minPartDuration;\n        }\n    };\n    /**\n     * A parser for M3U8 files. The current interpretation of the input is\n     * exposed as a property `manifest` on parser objects. It's just two lines to\n     * create and parse a manifest once you have the contents available as a string:\n     *\n     * ```js\n     * var parser = new m3u8.Parser();\n     * parser.push(xhr.responseText);\n     * ```\n     *\n     * New input can later be applied to update the manifest object by calling\n     * `push` again.\n     *\n     * The parser attempts to create a usable manifest object even if the\n     * underlying input is somewhat nonsensical. It emits `info` and `warning`\n     * events during the parse if it encounters input that seems invalid or\n     * requires some property of the manifest object to be defaulted.\n     *\n     * @class Parser\n     * @extends Stream\n     */\n\n    class Parser extends Stream {\n        constructor() {\n            super();\n            this.lineStream = new LineStream();\n            this.parseStream = new ParseStream();\n            this.lineStream.pipe(this.parseStream);\n            this.lastProgramDateTime = null;\n            /* eslint-disable consistent-this */\n\n            const self = this;\n            /* eslint-enable consistent-this */\n\n            const uris = [];\n            let currentUri = {}; // if specified, the active EXT-X-MAP definition\n\n            let currentMap; // if specified, the active decryption key\n\n            let key;\n            let hasParts = false;\n            const noop = function () {};\n            const defaultMediaGroups = {\n                'AUDIO': {},\n                'VIDEO': {},\n                'CLOSED-CAPTIONS': {},\n                'SUBTITLES': {}\n            }; // This is the Widevine UUID from DASH IF IOP. The same exact string is\n            // used in MPDs with Widevine encrypted streams.\n\n            const widevineUuid = 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed'; // group segments into numbered timelines delineated by discontinuities\n\n            let currentTimeline = 0; // the manifest is empty until the parse stream begins delivering data\n\n            this.manifest = {\n                allowCache: true,\n                discontinuityStarts: [],\n                dateRanges: [],\n                segments: []\n            }; // keep track of the last seen segment's byte range end, as segments are not required\n            // to provide the offset, in which case it defaults to the next byte after the\n            // previous segment\n\n            let lastByterangeEnd = 0; // keep track of the last seen part's byte range end.\n\n            let lastPartByterangeEnd = 0;\n            const dateRangeTags = {};\n            this.on('end', () => {\n                // only add preloadSegment if we don't yet have a uri for it.\n                // and we actually have parts/preloadHints\n                if (currentUri.uri || !currentUri.parts && !currentUri.preloadHints) {\n                    return;\n                }\n                if (!currentUri.map && currentMap) {\n                    currentUri.map = currentMap;\n                }\n                if (!currentUri.key && key) {\n                    currentUri.key = key;\n                }\n                if (!currentUri.timeline && typeof currentTimeline === 'number') {\n                    currentUri.timeline = currentTimeline;\n                }\n                this.manifest.preloadSegment = currentUri;\n            }); // update the manifest with the m3u8 entry from the parse stream\n\n            this.parseStream.on('data', function (entry) {\n                let mediaGroup;\n                let rendition;\n                ({\n                    tag() {\n                        // switch based on the tag type\n                        (({\n                            version() {\n                                if (entry.version) {\n                                    this.manifest.version = entry.version;\n                                }\n                            },\n                            'allow-cache'() {\n                                this.manifest.allowCache = entry.allowed;\n                                if (!('allowed' in entry)) {\n                                    this.trigger('info', {\n                                        message: 'defaulting allowCache to YES'\n                                    });\n                                    this.manifest.allowCache = true;\n                                }\n                            },\n                            byterange() {\n                                const byterange = {};\n                                if ('length' in entry) {\n                                    currentUri.byterange = byterange;\n                                    byterange.length = entry.length;\n                                    if (!('offset' in entry)) {\n                                        /*\n                     * From the latest spec (as of this writing):\n                     * https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.2.2\n                     *\n                     * Same text since EXT-X-BYTERANGE's introduction in draft 7:\n                     * https://tools.ietf.org/html/draft-pantos-http-live-streaming-07#section-3.3.1)\n                     *\n                     * \"If o [offset] is not present, the sub-range begins at the next byte\n                     * following the sub-range of the previous media segment.\"\n                     */\n                                        entry.offset = lastByterangeEnd;\n                                    }\n                                }\n                                if ('offset' in entry) {\n                                    currentUri.byterange = byterange;\n                                    byterange.offset = entry.offset;\n                                }\n                                lastByterangeEnd = byterange.offset + byterange.length;\n                            },\n                            endlist() {\n                                this.manifest.endList = true;\n                            },\n                            inf() {\n                                if (!('mediaSequence' in this.manifest)) {\n                                    this.manifest.mediaSequence = 0;\n                                    this.trigger('info', {\n                                        message: 'defaulting media sequence to zero'\n                                    });\n                                }\n                                if (!('discontinuitySequence' in this.manifest)) {\n                                    this.manifest.discontinuitySequence = 0;\n                                    this.trigger('info', {\n                                        message: 'defaulting discontinuity sequence to zero'\n                                    });\n                                }\n                                if (entry.title) {\n                                    currentUri.title = entry.title;\n                                }\n                                if (entry.duration > 0) {\n                                    currentUri.duration = entry.duration;\n                                }\n                                if (entry.duration === 0) {\n                                    currentUri.duration = 0.01;\n                                    this.trigger('info', {\n                                        message: 'updating zero segment duration to a small value'\n                                    });\n                                }\n                                this.manifest.segments = uris;\n                            },\n                            key() {\n                                if (!entry.attributes) {\n                                    this.trigger('warn', {\n                                        message: 'ignoring key declaration without attribute list'\n                                    });\n                                    return;\n                                } // clear the active encryption key\n\n                                if (entry.attributes.METHOD === 'NONE') {\n                                    key = null;\n                                    return;\n                                }\n                                if (!entry.attributes.URI) {\n                                    this.trigger('warn', {\n                                        message: 'ignoring key declaration without URI'\n                                    });\n                                    return;\n                                }\n                                if (entry.attributes.KEYFORMAT === 'com.apple.streamingkeydelivery') {\n                                    this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this.\n\n                                    this.manifest.contentProtection['com.apple.fps.1_0'] = {\n                                        attributes: entry.attributes\n                                    };\n                                    return;\n                                }\n                                if (entry.attributes.KEYFORMAT === 'com.microsoft.playready') {\n                                    this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this.\n\n                                    this.manifest.contentProtection['com.microsoft.playready'] = {\n                                        uri: entry.attributes.URI\n                                    };\n                                    return;\n                                } // check if the content is encrypted for Widevine\n                                // Widevine/HLS spec: https://storage.googleapis.com/wvdocs/Widevine_DRM_HLS.pdf\n\n                                if (entry.attributes.KEYFORMAT === widevineUuid) {\n                                    const VALID_METHODS = ['SAMPLE-AES', 'SAMPLE-AES-CTR', 'SAMPLE-AES-CENC'];\n                                    if (VALID_METHODS.indexOf(entry.attributes.METHOD) === -1) {\n                                        this.trigger('warn', {\n                                            message: 'invalid key method provided for Widevine'\n                                        });\n                                        return;\n                                    }\n                                    if (entry.attributes.METHOD === 'SAMPLE-AES-CENC') {\n                                        this.trigger('warn', {\n                                            message: 'SAMPLE-AES-CENC is deprecated, please use SAMPLE-AES-CTR instead'\n                                        });\n                                    }\n                                    if (entry.attributes.URI.substring(0, 23) !== 'data:text/plain;base64,') {\n                                        this.trigger('warn', {\n                                            message: 'invalid key URI provided for Widevine'\n                                        });\n                                        return;\n                                    }\n                                    if (!(entry.attributes.KEYID && entry.attributes.KEYID.substring(0, 2) === '0x')) {\n                                        this.trigger('warn', {\n                                            message: 'invalid key ID provided for Widevine'\n                                        });\n                                        return;\n                                    } // if Widevine key attributes are valid, store them as `contentProtection`\n                                    // on the manifest to emulate Widevine tag structure in a DASH mpd\n\n                                    this.manifest.contentProtection = this.manifest.contentProtection || {};\n                                    this.manifest.contentProtection['com.widevine.alpha'] = {\n                                        attributes: {\n                                            schemeIdUri: entry.attributes.KEYFORMAT,\n                                            // remove '0x' from the key id string\n                                            keyId: entry.attributes.KEYID.substring(2)\n                                        },\n                                        // decode the base64-encoded PSSH box\n                                        pssh: decodeB64ToUint8Array$1(entry.attributes.URI.split(',')[1])\n                                    };\n                                    return;\n                                }\n                                if (!entry.attributes.METHOD) {\n                                    this.trigger('warn', {\n                                        message: 'defaulting key method to AES-128'\n                                    });\n                                } // setup an encryption key for upcoming segments\n\n                                key = {\n                                    method: entry.attributes.METHOD || 'AES-128',\n                                    uri: entry.attributes.URI\n                                };\n                                if (typeof entry.attributes.IV !== 'undefined') {\n                                    key.iv = entry.attributes.IV;\n                                }\n                            },\n                            'media-sequence'() {\n                                if (!isFinite(entry.number)) {\n                                    this.trigger('warn', {\n                                        message: 'ignoring invalid media sequence: ' + entry.number\n                                    });\n                                    return;\n                                }\n                                this.manifest.mediaSequence = entry.number;\n                            },\n                            'discontinuity-sequence'() {\n                                if (!isFinite(entry.number)) {\n                                    this.trigger('warn', {\n                                        message: 'ignoring invalid discontinuity sequence: ' + entry.number\n                                    });\n                                    return;\n                                }\n                                this.manifest.discontinuitySequence = entry.number;\n                                currentTimeline = entry.number;\n                            },\n                            'playlist-type'() {\n                                if (!/VOD|EVENT/.test(entry.playlistType)) {\n                                    this.trigger('warn', {\n                                        message: 'ignoring unknown playlist type: ' + entry.playlist\n                                    });\n                                    return;\n                                }\n                                this.manifest.playlistType = entry.playlistType;\n                            },\n                            map() {\n                                currentMap = {};\n                                if (entry.uri) {\n                                    currentMap.uri = entry.uri;\n                                }\n                                if (entry.byterange) {\n                                    currentMap.byterange = entry.byterange;\n                                }\n                                if (key) {\n                                    currentMap.key = key;\n                                }\n                            },\n                            'stream-inf'() {\n                                this.manifest.playlists = uris;\n                                this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;\n                                if (!entry.attributes) {\n                                    this.trigger('warn', {\n                                        message: 'ignoring empty stream-inf attributes'\n                                    });\n                                    return;\n                                }\n                                if (!currentUri.attributes) {\n                                    currentUri.attributes = {};\n                                }\n                                _extends$1(currentUri.attributes, entry.attributes);\n                            },\n                            media() {\n                                this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;\n                                if (!(entry.attributes && entry.attributes.TYPE && entry.attributes['GROUP-ID'] && entry.attributes.NAME)) {\n                                    this.trigger('warn', {\n                                        message: 'ignoring incomplete or missing media group'\n                                    });\n                                    return;\n                                } // find the media group, creating defaults as necessary\n\n                                const mediaGroupType = this.manifest.mediaGroups[entry.attributes.TYPE];\n                                mediaGroupType[entry.attributes['GROUP-ID']] = mediaGroupType[entry.attributes['GROUP-ID']] || {};\n                                mediaGroup = mediaGroupType[entry.attributes['GROUP-ID']]; // collect the rendition metadata\n\n                                rendition = {\n                                    default: /yes/i.test(entry.attributes.DEFAULT)\n                                };\n                                if (rendition.default) {\n                                    rendition.autoselect = true;\n                                } else {\n                                    rendition.autoselect = /yes/i.test(entry.attributes.AUTOSELECT);\n                                }\n                                if (entry.attributes.LANGUAGE) {\n                                    rendition.language = entry.attributes.LANGUAGE;\n                                }\n                                if (entry.attributes.URI) {\n                                    rendition.uri = entry.attributes.URI;\n                                }\n                                if (entry.attributes['INSTREAM-ID']) {\n                                    rendition.instreamId = entry.attributes['INSTREAM-ID'];\n                                }\n                                if (entry.attributes.CHARACTERISTICS) {\n                                    rendition.characteristics = entry.attributes.CHARACTERISTICS;\n                                }\n                                if (entry.attributes.FORCED) {\n                                    rendition.forced = /yes/i.test(entry.attributes.FORCED);\n                                } // insert the new rendition\n\n                                mediaGroup[entry.attributes.NAME] = rendition;\n                            },\n                            discontinuity() {\n                                currentTimeline += 1;\n                                currentUri.discontinuity = true;\n                                this.manifest.discontinuityStarts.push(uris.length);\n                            },\n                            'program-date-time'() {\n                                if (typeof this.manifest.dateTimeString === 'undefined') {\n                                    // PROGRAM-DATE-TIME is a media-segment tag, but for backwards\n                                    // compatibility, we add the first occurence of the PROGRAM-DATE-TIME tag\n                                    // to the manifest object\n                                    // TODO: Consider removing this in future major version\n                                    this.manifest.dateTimeString = entry.dateTimeString;\n                                    this.manifest.dateTimeObject = entry.dateTimeObject;\n                                }\n                                currentUri.dateTimeString = entry.dateTimeString;\n                                currentUri.dateTimeObject = entry.dateTimeObject;\n                                const {\n                                    lastProgramDateTime\n                                } = this;\n                                this.lastProgramDateTime = new Date(entry.dateTimeString).getTime(); // We should extrapolate Program Date Time backward only during first program date time occurrence.\n                                // Once we have at least one program date time point, we can always extrapolate it forward using lastProgramDateTime reference.\n\n                                if (lastProgramDateTime === null) {\n                                    // Extrapolate Program Date Time backward\n                                    // Since it is first program date time occurrence we're assuming that\n                                    // all this.manifest.segments have no program date time info\n                                    this.manifest.segments.reduceRight((programDateTime, segment) => {\n                                        segment.programDateTime = programDateTime - segment.duration * 1000;\n                                        return segment.programDateTime;\n                                    }, this.lastProgramDateTime);\n                                }\n                            },\n                            targetduration() {\n                                if (!isFinite(entry.duration) || entry.duration < 0) {\n                                    this.trigger('warn', {\n                                        message: 'ignoring invalid target duration: ' + entry.duration\n                                    });\n                                    return;\n                                }\n                                this.manifest.targetDuration = entry.duration;\n                                setHoldBack.call(this, this.manifest);\n                            },\n                            start() {\n                                if (!entry.attributes || isNaN(entry.attributes['TIME-OFFSET'])) {\n                                    this.trigger('warn', {\n                                        message: 'ignoring start declaration without appropriate attribute list'\n                                    });\n                                    return;\n                                }\n                                this.manifest.start = {\n                                    timeOffset: entry.attributes['TIME-OFFSET'],\n                                    precise: entry.attributes.PRECISE\n                                };\n                            },\n                            'cue-out'() {\n                                currentUri.cueOut = entry.data;\n                            },\n                            'cue-out-cont'() {\n                                currentUri.cueOutCont = entry.data;\n                            },\n                            'cue-in'() {\n                                currentUri.cueIn = entry.data;\n                            },\n                            'skip'() {\n                                this.manifest.skip = camelCaseKeys(entry.attributes);\n                                this.warnOnMissingAttributes_('#EXT-X-SKIP', entry.attributes, ['SKIPPED-SEGMENTS']);\n                            },\n                            'part'() {\n                                hasParts = true; // parts are always specifed before a segment\n\n                                const segmentIndex = this.manifest.segments.length;\n                                const part = camelCaseKeys(entry.attributes);\n                                currentUri.parts = currentUri.parts || [];\n                                currentUri.parts.push(part);\n                                if (part.byterange) {\n                                    if (!part.byterange.hasOwnProperty('offset')) {\n                                        part.byterange.offset = lastPartByterangeEnd;\n                                    }\n                                    lastPartByterangeEnd = part.byterange.offset + part.byterange.length;\n                                }\n                                const partIndex = currentUri.parts.length - 1;\n                                this.warnOnMissingAttributes_(`#EXT-X-PART #${partIndex} for segment #${segmentIndex}`, entry.attributes, ['URI', 'DURATION']);\n                                if (this.manifest.renditionReports) {\n                                    this.manifest.renditionReports.forEach((r, i) => {\n                                        if (!r.hasOwnProperty('lastPart')) {\n                                            this.trigger('warn', {\n                                                message: `#EXT-X-RENDITION-REPORT #${i} lacks required attribute(s): LAST-PART`\n                                            });\n                                        }\n                                    });\n                                }\n                            },\n                            'server-control'() {\n                                const attrs = this.manifest.serverControl = camelCaseKeys(entry.attributes);\n                                if (!attrs.hasOwnProperty('canBlockReload')) {\n                                    attrs.canBlockReload = false;\n                                    this.trigger('info', {\n                                        message: '#EXT-X-SERVER-CONTROL defaulting CAN-BLOCK-RELOAD to false'\n                                    });\n                                }\n                                setHoldBack.call(this, this.manifest);\n                                if (attrs.canSkipDateranges && !attrs.hasOwnProperty('canSkipUntil')) {\n                                    this.trigger('warn', {\n                                        message: '#EXT-X-SERVER-CONTROL lacks required attribute CAN-SKIP-UNTIL which is required when CAN-SKIP-DATERANGES is set'\n                                    });\n                                }\n                            },\n                            'preload-hint'() {\n                                // parts are always specifed before a segment\n                                const segmentIndex = this.manifest.segments.length;\n                                const hint = camelCaseKeys(entry.attributes);\n                                const isPart = hint.type && hint.type === 'PART';\n                                currentUri.preloadHints = currentUri.preloadHints || [];\n                                currentUri.preloadHints.push(hint);\n                                if (hint.byterange) {\n                                    if (!hint.byterange.hasOwnProperty('offset')) {\n                                        // use last part byterange end or zero if not a part.\n                                        hint.byterange.offset = isPart ? lastPartByterangeEnd : 0;\n                                        if (isPart) {\n                                            lastPartByterangeEnd = hint.byterange.offset + hint.byterange.length;\n                                        }\n                                    }\n                                }\n                                const index = currentUri.preloadHints.length - 1;\n                                this.warnOnMissingAttributes_(`#EXT-X-PRELOAD-HINT #${index} for segment #${segmentIndex}`, entry.attributes, ['TYPE', 'URI']);\n                                if (!hint.type) {\n                                    return;\n                                } // search through all preload hints except for the current one for\n                                // a duplicate type.\n\n                                for (let i = 0; i < currentUri.preloadHints.length - 1; i++) {\n                                    const otherHint = currentUri.preloadHints[i];\n                                    if (!otherHint.type) {\n                                        continue;\n                                    }\n                                    if (otherHint.type === hint.type) {\n                                        this.trigger('warn', {\n                                            message: `#EXT-X-PRELOAD-HINT #${index} for segment #${segmentIndex} has the same TYPE ${hint.type} as preload hint #${i}`\n                                        });\n                                    }\n                                }\n                            },\n                            'rendition-report'() {\n                                const report = camelCaseKeys(entry.attributes);\n                                this.manifest.renditionReports = this.manifest.renditionReports || [];\n                                this.manifest.renditionReports.push(report);\n                                const index = this.manifest.renditionReports.length - 1;\n                                const required = ['LAST-MSN', 'URI'];\n                                if (hasParts) {\n                                    required.push('LAST-PART');\n                                }\n                                this.warnOnMissingAttributes_(`#EXT-X-RENDITION-REPORT #${index}`, entry.attributes, required);\n                            },\n                            'part-inf'() {\n                                this.manifest.partInf = camelCaseKeys(entry.attributes);\n                                this.warnOnMissingAttributes_('#EXT-X-PART-INF', entry.attributes, ['PART-TARGET']);\n                                if (this.manifest.partInf.partTarget) {\n                                    this.manifest.partTargetDuration = this.manifest.partInf.partTarget;\n                                }\n                                setHoldBack.call(this, this.manifest);\n                            },\n                            'daterange'() {\n                                this.manifest.dateRanges.push(camelCaseKeys(entry.attributes));\n                                const index = this.manifest.dateRanges.length - 1;\n                                this.warnOnMissingAttributes_(`#EXT-X-DATERANGE #${index}`, entry.attributes, ['ID', 'START-DATE']);\n                                const dateRange = this.manifest.dateRanges[index];\n                                if (dateRange.endDate && dateRange.startDate && new Date(dateRange.endDate) < new Date(dateRange.startDate)) {\n                                    this.trigger('warn', {\n                                        message: 'EXT-X-DATERANGE END-DATE must be equal to or later than the value of the START-DATE'\n                                    });\n                                }\n                                if (dateRange.duration && dateRange.duration < 0) {\n                                    this.trigger('warn', {\n                                        message: 'EXT-X-DATERANGE DURATION must not be negative'\n                                    });\n                                }\n                                if (dateRange.plannedDuration && dateRange.plannedDuration < 0) {\n                                    this.trigger('warn', {\n                                        message: 'EXT-X-DATERANGE PLANNED-DURATION must not be negative'\n                                    });\n                                }\n                                const endOnNextYes = !!dateRange.endOnNext;\n                                if (endOnNextYes && !dateRange.class) {\n                                    this.trigger('warn', {\n                                        message: 'EXT-X-DATERANGE with an END-ON-NEXT=YES attribute must have a CLASS attribute'\n                                    });\n                                }\n                                if (endOnNextYes && (dateRange.duration || dateRange.endDate)) {\n                                    this.trigger('warn', {\n                                        message: 'EXT-X-DATERANGE with an END-ON-NEXT=YES attribute must not contain DURATION or END-DATE attributes'\n                                    });\n                                }\n                                if (dateRange.duration && dateRange.endDate) {\n                                    const startDate = dateRange.startDate;\n                                    const newDateInSeconds = startDate.getTime() + dateRange.duration * 1000;\n                                    this.manifest.dateRanges[index].endDate = new Date(newDateInSeconds);\n                                }\n                                if (!dateRangeTags[dateRange.id]) {\n                                    dateRangeTags[dateRange.id] = dateRange;\n                                } else {\n                                    for (const attribute in dateRangeTags[dateRange.id]) {\n                                        if (!!dateRange[attribute] && JSON.stringify(dateRangeTags[dateRange.id][attribute]) !== JSON.stringify(dateRange[attribute])) {\n                                            this.trigger('warn', {\n                                                message: 'EXT-X-DATERANGE tags with the same ID in a playlist must have the same attributes values'\n                                            });\n                                            break;\n                                        }\n                                    } // if tags with the same ID do not have conflicting attributes, merge them\n\n                                    const dateRangeWithSameId = this.manifest.dateRanges.findIndex(dateRangeToFind => dateRangeToFind.id === dateRange.id);\n                                    this.manifest.dateRanges[dateRangeWithSameId] = _extends$1(this.manifest.dateRanges[dateRangeWithSameId], dateRange);\n                                    dateRangeTags[dateRange.id] = _extends$1(dateRangeTags[dateRange.id], dateRange); // after merging, delete the duplicate dateRange that was added last\n\n                                    this.manifest.dateRanges.pop();\n                                }\n                            },\n                            'independent-segments'() {\n                                this.manifest.independentSegments = true;\n                            },\n                            'content-steering'() {\n                                this.manifest.contentSteering = camelCaseKeys(entry.attributes);\n                                this.warnOnMissingAttributes_('#EXT-X-CONTENT-STEERING', entry.attributes, ['SERVER-URI']);\n                            }\n                        })[entry.tagType] || noop).call(self);\n                    },\n                    uri() {\n                        currentUri.uri = entry.uri;\n                        uris.push(currentUri); // if no explicit duration was declared, use the target duration\n\n                        if (this.manifest.targetDuration && !('duration' in currentUri)) {\n                            this.trigger('warn', {\n                                message: 'defaulting segment duration to the target duration'\n                            });\n                            currentUri.duration = this.manifest.targetDuration;\n                        } // annotate with encryption information, if necessary\n\n                        if (key) {\n                            currentUri.key = key;\n                        }\n                        currentUri.timeline = currentTimeline; // annotate with initialization segment information, if necessary\n\n                        if (currentMap) {\n                            currentUri.map = currentMap;\n                        } // reset the last byterange end as it needs to be 0 between parts\n\n                        lastPartByterangeEnd = 0; // Once we have at least one program date time we can always extrapolate it forward\n\n                        if (this.lastProgramDateTime !== null) {\n                            currentUri.programDateTime = this.lastProgramDateTime;\n                            this.lastProgramDateTime += currentUri.duration * 1000;\n                        } // prepare for the next URI\n\n                        currentUri = {};\n                    },\n                    comment() {// comments are not important for playback\n                    },\n                    custom() {\n                        // if this is segment-level data attach the output to the segment\n                        if (entry.segment) {\n                            currentUri.custom = currentUri.custom || {};\n                            currentUri.custom[entry.customType] = entry.data; // if this is manifest-level data attach to the top level manifest object\n                        } else {\n                            this.manifest.custom = this.manifest.custom || {};\n                            this.manifest.custom[entry.customType] = entry.data;\n                        }\n                    }\n                })[entry.type].call(self);\n            });\n        }\n        warnOnMissingAttributes_(identifier, attributes, required) {\n            const missing = [];\n            required.forEach(function (key) {\n                if (!attributes.hasOwnProperty(key)) {\n                    missing.push(key);\n                }\n            });\n            if (missing.length) {\n                this.trigger('warn', {\n                    message: `${identifier} lacks required attribute(s): ${missing.join(', ')}`\n                });\n            }\n        }\n        /**\n         * Parse the input string and update the manifest object.\n         *\n         * @param {string} chunk a potentially incomplete portion of the manifest\n         */\n\n        push(chunk) {\n            this.lineStream.push(chunk);\n        }\n        /**\n         * Flush any remaining input. This can be handy if the last line of an M3U8\n         * manifest did not contain a trailing newline but the file has been\n         * completely received.\n         */\n\n        end() {\n            // flush any buffered input\n            this.lineStream.push('\\n');\n            if (this.manifest.dateRanges.length && this.lastProgramDateTime === null) {\n                this.trigger('warn', {\n                    message: 'A playlist with EXT-X-DATERANGE tag must contain atleast one EXT-X-PROGRAM-DATE-TIME tag'\n                });\n            }\n            this.lastProgramDateTime = null;\n            this.trigger('end');\n        }\n        /**\n         * Add an additional parser for non-standard tags\n         *\n         * @param {Object}   options              a map of options for the added parser\n         * @param {RegExp}   options.expression   a regular expression to match the custom header\n         * @param {string}   options.customType   the custom type to register to the output\n         * @param {Function} [options.dataParser] function to parse the line into an object\n         * @param {boolean}  [options.segment]    should tag data be attached to the segment object\n         */\n\n        addParser(options) {\n            this.parseStream.addParser(options);\n        }\n        /**\n         * Add a custom header mapper\n         *\n         * @param {Object}   options\n         * @param {RegExp}   options.expression   a regular expression to match the custom header\n         * @param {Function} options.map          function to translate tag into a different tag\n         */\n\n        addTagMapper(options) {\n            this.parseStream.addTagMapper(options);\n        }\n    }\n\n    var regexs = {\n        // to determine mime types\n        mp4: /^(av0?1|avc0?[1234]|vp0?9|flac|opus|mp3|mp4a|mp4v|stpp.ttml.im1t)/,\n        webm: /^(vp0?[89]|av0?1|opus|vorbis)/,\n        ogg: /^(vp0?[89]|theora|flac|opus|vorbis)/,\n        // to determine if a codec is audio or video\n        video: /^(av0?1|avc0?[1234]|vp0?[89]|hvc1|hev1|theora|mp4v)/,\n        audio: /^(mp4a|flac|vorbis|opus|ac-[34]|ec-3|alac|mp3|speex|aac)/,\n        text: /^(stpp.ttml.im1t)/,\n        // mux.js support regex\n        muxerVideo: /^(avc0?1)/,\n        muxerAudio: /^(mp4a)/,\n        // match nothing as muxer does not support text right now.\n        // there cannot never be a character before the start of a string\n        // so this matches nothing.\n        muxerText: /a^/\n    };\n    var mediaTypes = ['video', 'audio', 'text'];\n    var upperMediaTypes = ['Video', 'Audio', 'Text'];\n    /**\n     * Replace the old apple-style `avc1.<dd>.<dd>` codec string with the standard\n     * `avc1.<hhhhhh>`\n     *\n     * @param {string} codec\n     *        Codec string to translate\n     * @return {string}\n     *         The translated codec string\n     */\n\n    var translateLegacyCodec = function translateLegacyCodec(codec) {\n        if (!codec) {\n            return codec;\n        }\n        return codec.replace(/avc1\\.(\\d+)\\.(\\d+)/i, function (orig, profile, avcLevel) {\n            var profileHex = ('00' + Number(profile).toString(16)).slice(-2);\n            var avcLevelHex = ('00' + Number(avcLevel).toString(16)).slice(-2);\n            return 'avc1.' + profileHex + '00' + avcLevelHex;\n        });\n    };\n    /**\n     * @typedef {Object} ParsedCodecInfo\n     * @property {number} codecCount\n     *           Number of codecs parsed\n     * @property {string} [videoCodec]\n     *           Parsed video codec (if found)\n     * @property {string} [videoObjectTypeIndicator]\n     *           Video object type indicator (if found)\n     * @property {string|null} audioProfile\n     *           Audio profile\n     */\n\n    /**\n     * Parses a codec string to retrieve the number of codecs specified, the video codec and\n     * object type indicator, and the audio profile.\n     *\n     * @param {string} [codecString]\n     *        The codec string to parse\n     * @return {ParsedCodecInfo}\n     *         Parsed codec info\n     */\n\n    var parseCodecs = function parseCodecs(codecString) {\n        if (codecString === void 0) {\n            codecString = '';\n        }\n        var codecs = codecString.split(',');\n        var result = [];\n        codecs.forEach(function (codec) {\n            codec = codec.trim();\n            var codecType;\n            mediaTypes.forEach(function (name) {\n                var match = regexs[name].exec(codec.toLowerCase());\n                if (!match || match.length <= 1) {\n                    return;\n                }\n                codecType = name; // maintain codec case\n\n                var type = codec.substring(0, match[1].length);\n                var details = codec.replace(type, '');\n                result.push({\n                    type: type,\n                    details: details,\n                    mediaType: name\n                });\n            });\n            if (!codecType) {\n                result.push({\n                    type: codec,\n                    details: '',\n                    mediaType: 'unknown'\n                });\n            }\n        });\n        return result;\n    };\n    /**\n     * Returns a ParsedCodecInfo object for the default alternate audio playlist if there is\n     * a default alternate audio playlist for the provided audio group.\n     *\n     * @param {Object} master\n     *        The master playlist\n     * @param {string} audioGroupId\n     *        ID of the audio group for which to find the default codec info\n     * @return {ParsedCodecInfo}\n     *         Parsed codec info\n     */\n\n    var codecsFromDefault = function codecsFromDefault(master, audioGroupId) {\n        if (!master.mediaGroups.AUDIO || !audioGroupId) {\n            return null;\n        }\n        var audioGroup = master.mediaGroups.AUDIO[audioGroupId];\n        if (!audioGroup) {\n            return null;\n        }\n        for (var name in audioGroup) {\n            var audioType = audioGroup[name];\n            if (audioType.default && audioType.playlists) {\n                // codec should be the same for all playlists within the audio type\n                return parseCodecs(audioType.playlists[0].attributes.CODECS);\n            }\n        }\n        return null;\n    };\n    var isAudioCodec = function isAudioCodec(codec) {\n        if (codec === void 0) {\n            codec = '';\n        }\n        return regexs.audio.test(codec.trim().toLowerCase());\n    };\n    var isTextCodec = function isTextCodec(codec) {\n        if (codec === void 0) {\n            codec = '';\n        }\n        return regexs.text.test(codec.trim().toLowerCase());\n    };\n    var getMimeForCodec = function getMimeForCodec(codecString) {\n        if (!codecString || typeof codecString !== 'string') {\n            return;\n        }\n        var codecs = codecString.toLowerCase().split(',').map(function (c) {\n            return translateLegacyCodec(c.trim());\n        }); // default to video type\n\n        var type = 'video'; // only change to audio type if the only codec we have is\n        // audio\n\n        if (codecs.length === 1 && isAudioCodec(codecs[0])) {\n            type = 'audio';\n        } else if (codecs.length === 1 && isTextCodec(codecs[0])) {\n            // text uses application/<container> for now\n            type = 'application';\n        } // default the container to mp4\n\n        var container = 'mp4'; // every codec must be able to go into the container\n        // for that container to be the correct one\n\n        if (codecs.every(function (c) {\n            return regexs.mp4.test(c);\n        })) {\n            container = 'mp4';\n        } else if (codecs.every(function (c) {\n            return regexs.webm.test(c);\n        })) {\n            container = 'webm';\n        } else if (codecs.every(function (c) {\n            return regexs.ogg.test(c);\n        })) {\n            container = 'ogg';\n        }\n        return type + \"/\" + container + \";codecs=\\\"\" + codecString + \"\\\"\";\n    };\n    var browserSupportsCodec = function browserSupportsCodec(codecString) {\n        if (codecString === void 0) {\n            codecString = '';\n        }\n        return window.MediaSource && window.MediaSource.isTypeSupported && window.MediaSource.isTypeSupported(getMimeForCodec(codecString)) || false;\n    };\n    var muxerSupportsCodec = function muxerSupportsCodec(codecString) {\n        if (codecString === void 0) {\n            codecString = '';\n        }\n        return codecString.toLowerCase().split(',').every(function (codec) {\n            codec = codec.trim(); // any match is supported.\n\n            for (var i = 0; i < upperMediaTypes.length; i++) {\n                var type = upperMediaTypes[i];\n                if (regexs[\"muxer\" + type].test(codec)) {\n                    return true;\n                }\n            }\n            return false;\n        });\n    };\n    var DEFAULT_AUDIO_CODEC = 'mp4a.40.2';\n    var DEFAULT_VIDEO_CODEC = 'avc1.4d400d';\n\n    var MPEGURL_REGEX = /^(audio|video|application)\\/(x-|vnd\\.apple\\.)?mpegurl/i;\n    var DASH_REGEX = /^application\\/dash\\+xml/i;\n    /**\n     * Returns a string that describes the type of source based on a video source object's\n     * media type.\n     *\n     * @see {@link https://dev.w3.org/html5/pf-summary/video.html#dom-source-type|Source Type}\n     *\n     * @param {string} type\n     *        Video source object media type\n     * @return {('hls'|'dash'|'vhs-json'|null)}\n     *         VHS source type string\n     */\n\n    var simpleTypeFromSourceType = function simpleTypeFromSourceType(type) {\n        if (MPEGURL_REGEX.test(type)) {\n            return 'hls';\n        }\n        if (DASH_REGEX.test(type)) {\n            return 'dash';\n        } // Denotes the special case of a manifest object passed to http-streaming instead of a\n        // source URL.\n        //\n        // See https://en.wikipedia.org/wiki/Media_type for details on specifying media types.\n        //\n        // In this case, vnd stands for vendor, video.js for the organization, VHS for this\n        // project, and the +json suffix identifies the structure of the media type.\n\n        if (type === 'application/vnd.videojs.vhs+json') {\n            return 'vhs-json';\n        }\n        return null;\n    };\n\n    // const log2 = Math.log2 ? Math.log2 : (x) => (Math.log(x) / Math.log(2));\n    // we used to do this with log2 but BigInt does not support builtin math\n    // Math.ceil(log2(x));\n\n    var countBits = function countBits(x) {\n        return x.toString(2).length;\n    }; // count the number of whole bytes it would take to represent a number\n\n    var countBytes = function countBytes(x) {\n        return Math.ceil(countBits(x) / 8);\n    };\n    var isArrayBufferView = function isArrayBufferView(obj) {\n        if (ArrayBuffer.isView === 'function') {\n            return ArrayBuffer.isView(obj);\n        }\n        return obj && obj.buffer instanceof ArrayBuffer;\n    };\n    var isTypedArray = function isTypedArray(obj) {\n        return isArrayBufferView(obj);\n    };\n    var toUint8 = function toUint8(bytes) {\n        if (bytes instanceof Uint8Array) {\n            return bytes;\n        }\n        if (!Array.isArray(bytes) && !isTypedArray(bytes) && !(bytes instanceof ArrayBuffer)) {\n            // any non-number or NaN leads to empty uint8array\n            // eslint-disable-next-line\n            if (typeof bytes !== 'number' || typeof bytes === 'number' && bytes !== bytes) {\n                bytes = 0;\n            } else {\n                bytes = [bytes];\n            }\n        }\n        return new Uint8Array(bytes && bytes.buffer || bytes, bytes && bytes.byteOffset || 0, bytes && bytes.byteLength || 0);\n    };\n    var BigInt = window.BigInt || Number;\n    var BYTE_TABLE = [BigInt('0x1'), BigInt('0x100'), BigInt('0x10000'), BigInt('0x1000000'), BigInt('0x100000000'), BigInt('0x10000000000'), BigInt('0x1000000000000'), BigInt('0x100000000000000'), BigInt('0x10000000000000000')];\n    (function () {\n        var a = new Uint16Array([0xFFCC]);\n        var b = new Uint8Array(a.buffer, a.byteOffset, a.byteLength);\n        if (b[0] === 0xFF) {\n            return 'big';\n        }\n        if (b[0] === 0xCC) {\n            return 'little';\n        }\n        return 'unknown';\n    })();\n    var bytesToNumber = function bytesToNumber(bytes, _temp) {\n        var _ref = _temp === void 0 ? {} : _temp,\n            _ref$signed = _ref.signed,\n            signed = _ref$signed === void 0 ? false : _ref$signed,\n            _ref$le = _ref.le,\n            le = _ref$le === void 0 ? false : _ref$le;\n        bytes = toUint8(bytes);\n        var fn = le ? 'reduce' : 'reduceRight';\n        var obj = bytes[fn] ? bytes[fn] : Array.prototype[fn];\n        var number = obj.call(bytes, function (total, byte, i) {\n            var exponent = le ? i : Math.abs(i + 1 - bytes.length);\n            return total + BigInt(byte) * BYTE_TABLE[exponent];\n        }, BigInt(0));\n        if (signed) {\n            var max = BYTE_TABLE[bytes.length] / BigInt(2) - BigInt(1);\n            number = BigInt(number);\n            if (number > max) {\n                number -= max;\n                number -= max;\n                number -= BigInt(2);\n            }\n        }\n        return Number(number);\n    };\n    var numberToBytes = function numberToBytes(number, _temp2) {\n        var _ref2 = _temp2 === void 0 ? {} : _temp2,\n            _ref2$le = _ref2.le,\n            le = _ref2$le === void 0 ? false : _ref2$le;\n\n        // eslint-disable-next-line\n        if (typeof number !== 'bigint' && typeof number !== 'number' || typeof number === 'number' && number !== number) {\n            number = 0;\n        }\n        number = BigInt(number);\n        var byteCount = countBytes(number);\n        var bytes = new Uint8Array(new ArrayBuffer(byteCount));\n        for (var i = 0; i < byteCount; i++) {\n            var byteIndex = le ? i : Math.abs(i + 1 - bytes.length);\n            bytes[byteIndex] = Number(number / BYTE_TABLE[i] & BigInt(0xFF));\n            if (number < 0) {\n                bytes[byteIndex] = Math.abs(~bytes[byteIndex]);\n                bytes[byteIndex] -= i === 0 ? 1 : 2;\n            }\n        }\n        return bytes;\n    };\n    var stringToBytes = function stringToBytes(string, stringIsBytes) {\n        if (typeof string !== 'string' && string && typeof string.toString === 'function') {\n            string = string.toString();\n        }\n        if (typeof string !== 'string') {\n            return new Uint8Array();\n        } // If the string already is bytes, we don't have to do this\n        // otherwise we do this so that we split multi length characters\n        // into individual bytes\n\n        if (!stringIsBytes) {\n            string = unescape(encodeURIComponent(string));\n        }\n        var view = new Uint8Array(string.length);\n        for (var i = 0; i < string.length; i++) {\n            view[i] = string.charCodeAt(i);\n        }\n        return view;\n    };\n    var concatTypedArrays = function concatTypedArrays() {\n        for (var _len = arguments.length, buffers = new Array(_len), _key = 0; _key < _len; _key++) {\n            buffers[_key] = arguments[_key];\n        }\n        buffers = buffers.filter(function (b) {\n            return b && (b.byteLength || b.length) && typeof b !== 'string';\n        });\n        if (buffers.length <= 1) {\n            // for 0 length we will return empty uint8\n            // for 1 length we return the first uint8\n            return toUint8(buffers[0]);\n        }\n        var totalLen = buffers.reduce(function (total, buf, i) {\n            return total + (buf.byteLength || buf.length);\n        }, 0);\n        var tempBuffer = new Uint8Array(totalLen);\n        var offset = 0;\n        buffers.forEach(function (buf) {\n            buf = toUint8(buf);\n            tempBuffer.set(buf, offset);\n            offset += buf.byteLength;\n        });\n        return tempBuffer;\n    };\n    /**\n     * Check if the bytes \"b\" are contained within bytes \"a\".\n     *\n     * @param {Uint8Array|Array} a\n     *        Bytes to check in\n     *\n     * @param {Uint8Array|Array} b\n     *        Bytes to check for\n     *\n     * @param {Object} options\n     *        options\n     *\n     * @param {Array|Uint8Array} [offset=0]\n     *        offset to use when looking at bytes in a\n     *\n     * @param {Array|Uint8Array} [mask=[]]\n     *        mask to use on bytes before comparison.\n     *\n     * @return {boolean}\n     *         If all bytes in b are inside of a, taking into account\n     *         bit masks.\n     */\n\n    var bytesMatch = function bytesMatch(a, b, _temp3) {\n        var _ref3 = _temp3 === void 0 ? {} : _temp3,\n            _ref3$offset = _ref3.offset,\n            offset = _ref3$offset === void 0 ? 0 : _ref3$offset,\n            _ref3$mask = _ref3.mask,\n            mask = _ref3$mask === void 0 ? [] : _ref3$mask;\n        a = toUint8(a);\n        b = toUint8(b); // ie 11 does not support uint8 every\n\n        var fn = b.every ? b.every : Array.prototype.every;\n        return b.length && a.length - offset >= b.length &&\n            // ie 11 doesn't support every on uin8\n            fn.call(b, function (bByte, i) {\n                var aByte = mask[i] ? mask[i] & a[offset + i] : a[offset + i];\n                return bByte === aByte;\n            });\n    };\n\n    /**\n     * Loops through all supported media groups in master and calls the provided\n     * callback for each group\n     *\n     * @param {Object} master\n     *        The parsed master manifest object\n     * @param {string[]} groups\n     *        The media groups to call the callback for\n     * @param {Function} callback\n     *        Callback to call for each media group\n     */\n    var forEachMediaGroup$1 = function forEachMediaGroup(master, groups, callback) {\n        groups.forEach(function (mediaType) {\n            for (var groupKey in master.mediaGroups[mediaType]) {\n                for (var labelKey in master.mediaGroups[mediaType][groupKey]) {\n                    var mediaProperties = master.mediaGroups[mediaType][groupKey][labelKey];\n                    callback(mediaProperties, mediaType, groupKey, labelKey);\n                }\n            }\n        });\n    };\n\n    var atob = function atob(s) {\n        return window.atob ? window.atob(s) : Buffer.from(s, 'base64').toString('binary');\n    };\n    function decodeB64ToUint8Array(b64Text) {\n        var decodedString = atob(b64Text);\n        var array = new Uint8Array(decodedString.length);\n        for (var i = 0; i < decodedString.length; i++) {\n            array[i] = decodedString.charCodeAt(i);\n        }\n        return array;\n    }\n\n    /**\n     * Ponyfill for `Array.prototype.find` which is only available in ES6 runtimes.\n     *\n     * Works with anything that has a `length` property and index access properties, including NodeList.\n     *\n     * @template {unknown} T\n     * @param {Array<T> | ({length:number, [number]: T})} list\n     * @param {function (item: T, index: number, list:Array<T> | ({length:number, [number]: T})):boolean} predicate\n     * @param {Partial<Pick<ArrayConstructor['prototype'], 'find'>>?} ac `Array.prototype` by default,\n     * \t\t\t\tallows injecting a custom implementation in tests\n     * @returns {T | undefined}\n     *\n     * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find\n     * @see https://tc39.es/ecma262/multipage/indexed-collections.html#sec-array.prototype.find\n     */\n    function find$1(list, predicate, ac) {\n        if (ac === undefined) {\n            ac = Array.prototype;\n        }\n        if (list && typeof ac.find === 'function') {\n            return ac.find.call(list, predicate);\n        }\n        for (var i = 0; i < list.length; i++) {\n            if (Object.prototype.hasOwnProperty.call(list, i)) {\n                var item = list[i];\n                if (predicate.call(undefined, item, i, list)) {\n                    return item;\n                }\n            }\n        }\n    }\n\n    /**\n     * \"Shallow freezes\" an object to render it immutable.\n     * Uses `Object.freeze` if available,\n     * otherwise the immutability is only in the type.\n     *\n     * Is used to create \"enum like\" objects.\n     *\n     * @template T\n     * @param {T} object the object to freeze\n     * @param {Pick<ObjectConstructor, 'freeze'> = Object} oc `Object` by default,\n     * \t\t\t\tallows to inject custom object constructor for tests\n     * @returns {Readonly<T>}\n     *\n     * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze\n     */\n    function freeze(object, oc) {\n        if (oc === undefined) {\n            oc = Object;\n        }\n        return oc && typeof oc.freeze === 'function' ? oc.freeze(object) : object;\n    }\n\n    /**\n     * Since we can not rely on `Object.assign` we provide a simplified version\n     * that is sufficient for our needs.\n     *\n     * @param {Object} target\n     * @param {Object | null | undefined} source\n     *\n     * @returns {Object} target\n     * @throws TypeError if target is not an object\n     *\n     * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign\n     * @see https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object.assign\n     */\n    function assign(target, source) {\n        if (target === null || typeof target !== 'object') {\n            throw new TypeError('target is not an object');\n        }\n        for (var key in source) {\n            if (Object.prototype.hasOwnProperty.call(source, key)) {\n                target[key] = source[key];\n            }\n        }\n        return target;\n    }\n\n    /**\n     * All mime types that are allowed as input to `DOMParser.parseFromString`\n     *\n     * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString#Argument02 MDN\n     * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#domparsersupportedtype WHATWG HTML Spec\n     * @see DOMParser.prototype.parseFromString\n     */\n    var MIME_TYPE = freeze({\n        /**\n         * `text/html`, the only mime type that triggers treating an XML document as HTML.\n         *\n         * @see DOMParser.SupportedType.isHTML\n         * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration\n         * @see https://en.wikipedia.org/wiki/HTML Wikipedia\n         * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN\n         * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring WHATWG HTML Spec\n         */\n        HTML: 'text/html',\n        /**\n         * Helper method to check a mime type if it indicates an HTML document\n         *\n         * @param {string} [value]\n         * @returns {boolean}\n         *\n         * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration\n         * @see https://en.wikipedia.org/wiki/HTML Wikipedia\n         * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN\n         * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring \t */\n        isHTML: function (value) {\n            return value === MIME_TYPE.HTML;\n        },\n        /**\n         * `application/xml`, the standard mime type for XML documents.\n         *\n         * @see https://www.iana.org/assignments/media-types/application/xml IANA MimeType registration\n         * @see https://tools.ietf.org/html/rfc7303#section-9.1 RFC 7303\n         * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia\n         */\n        XML_APPLICATION: 'application/xml',\n        /**\n         * `text/html`, an alias for `application/xml`.\n         *\n         * @see https://tools.ietf.org/html/rfc7303#section-9.2 RFC 7303\n         * @see https://www.iana.org/assignments/media-types/text/xml IANA MimeType registration\n         * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia\n         */\n        XML_TEXT: 'text/xml',\n        /**\n         * `application/xhtml+xml`, indicates an XML document that has the default HTML namespace,\n         * but is parsed as an XML document.\n         *\n         * @see https://www.iana.org/assignments/media-types/application/xhtml+xml IANA MimeType registration\n         * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument WHATWG DOM Spec\n         * @see https://en.wikipedia.org/wiki/XHTML Wikipedia\n         */\n        XML_XHTML_APPLICATION: 'application/xhtml+xml',\n        /**\n         * `image/svg+xml`,\n         *\n         * @see https://www.iana.org/assignments/media-types/image/svg+xml IANA MimeType registration\n         * @see https://www.w3.org/TR/SVG11/ W3C SVG 1.1\n         * @see https://en.wikipedia.org/wiki/Scalable_Vector_Graphics Wikipedia\n         */\n        XML_SVG_IMAGE: 'image/svg+xml'\n    });\n\n    /**\n     * Namespaces that are used in this code base.\n     *\n     * @see http://www.w3.org/TR/REC-xml-names\n     */\n    var NAMESPACE$3 = freeze({\n        /**\n         * The XHTML namespace.\n         *\n         * @see http://www.w3.org/1999/xhtml\n         */\n        HTML: 'http://www.w3.org/1999/xhtml',\n        /**\n         * Checks if `uri` equals `NAMESPACE.HTML`.\n         *\n         * @param {string} [uri]\n         *\n         * @see NAMESPACE.HTML\n         */\n        isHTML: function (uri) {\n            return uri === NAMESPACE$3.HTML;\n        },\n        /**\n         * The SVG namespace.\n         *\n         * @see http://www.w3.org/2000/svg\n         */\n        SVG: 'http://www.w3.org/2000/svg',\n        /**\n         * The `xml:` namespace.\n         *\n         * @see http://www.w3.org/XML/1998/namespace\n         */\n        XML: 'http://www.w3.org/XML/1998/namespace',\n        /**\n         * The `xmlns:` namespace\n         *\n         * @see https://www.w3.org/2000/xmlns/\n         */\n        XMLNS: 'http://www.w3.org/2000/xmlns/'\n    });\n    var assign_1 = assign;\n    var find_1 = find$1;\n    var freeze_1 = freeze;\n    var MIME_TYPE_1 = MIME_TYPE;\n    var NAMESPACE_1 = NAMESPACE$3;\n    var conventions = {\n        assign: assign_1,\n        find: find_1,\n        freeze: freeze_1,\n        MIME_TYPE: MIME_TYPE_1,\n        NAMESPACE: NAMESPACE_1\n    };\n\n    var find = conventions.find;\n    var NAMESPACE$2 = conventions.NAMESPACE;\n\n    /**\n     * A prerequisite for `[].filter`, to drop elements that are empty\n     * @param {string} input\n     * @returns {boolean}\n     */\n    function notEmptyString(input) {\n        return input !== '';\n    }\n    /**\n     * @see https://infra.spec.whatwg.org/#split-on-ascii-whitespace\n     * @see https://infra.spec.whatwg.org/#ascii-whitespace\n     *\n     * @param {string} input\n     * @returns {string[]} (can be empty)\n     */\n    function splitOnASCIIWhitespace(input) {\n        // U+0009 TAB, U+000A LF, U+000C FF, U+000D CR, U+0020 SPACE\n        return input ? input.split(/[\\t\\n\\f\\r ]+/).filter(notEmptyString) : [];\n    }\n\n    /**\n     * Adds element as a key to current if it is not already present.\n     *\n     * @param {Record<string, boolean | undefined>} current\n     * @param {string} element\n     * @returns {Record<string, boolean | undefined>}\n     */\n    function orderedSetReducer(current, element) {\n        if (!current.hasOwnProperty(element)) {\n            current[element] = true;\n        }\n        return current;\n    }\n\n    /**\n     * @see https://infra.spec.whatwg.org/#ordered-set\n     * @param {string} input\n     * @returns {string[]}\n     */\n    function toOrderedSet(input) {\n        if (!input) return [];\n        var list = splitOnASCIIWhitespace(input);\n        return Object.keys(list.reduce(orderedSetReducer, {}));\n    }\n\n    /**\n     * Uses `list.indexOf` to implement something like `Array.prototype.includes`,\n     * which we can not rely on being available.\n     *\n     * @param {any[]} list\n     * @returns {function(any): boolean}\n     */\n    function arrayIncludes(list) {\n        return function (element) {\n            return list && list.indexOf(element) !== -1;\n        };\n    }\n    function copy(src, dest) {\n        for (var p in src) {\n            if (Object.prototype.hasOwnProperty.call(src, p)) {\n                dest[p] = src[p];\n            }\n        }\n    }\n\n    /**\n     ^\\w+\\.prototype\\.([_\\w]+)\\s*=\\s*((?:.*\\{\\s*?[\\r\\n][\\s\\S]*?^})|\\S.*?(?=[;\\r\\n]));?\n     ^\\w+\\.prototype\\.([_\\w]+)\\s*=\\s*(\\S.*?(?=[;\\r\\n]));?\n     */\n    function _extends(Class, Super) {\n        var pt = Class.prototype;\n        if (!(pt instanceof Super)) {\n            function t() {}\n            t.prototype = Super.prototype;\n            t = new t();\n            copy(pt, t);\n            Class.prototype = pt = t;\n        }\n        if (pt.constructor != Class) {\n            if (typeof Class != 'function') {\n                console.error(\"unknown Class:\" + Class);\n            }\n            pt.constructor = Class;\n        }\n    }\n\n    // Node Types\n    var NodeType = {};\n    var ELEMENT_NODE = NodeType.ELEMENT_NODE = 1;\n    var ATTRIBUTE_NODE = NodeType.ATTRIBUTE_NODE = 2;\n    var TEXT_NODE = NodeType.TEXT_NODE = 3;\n    var CDATA_SECTION_NODE = NodeType.CDATA_SECTION_NODE = 4;\n    var ENTITY_REFERENCE_NODE = NodeType.ENTITY_REFERENCE_NODE = 5;\n    var ENTITY_NODE = NodeType.ENTITY_NODE = 6;\n    var PROCESSING_INSTRUCTION_NODE = NodeType.PROCESSING_INSTRUCTION_NODE = 7;\n    var COMMENT_NODE = NodeType.COMMENT_NODE = 8;\n    var DOCUMENT_NODE = NodeType.DOCUMENT_NODE = 9;\n    var DOCUMENT_TYPE_NODE = NodeType.DOCUMENT_TYPE_NODE = 10;\n    var DOCUMENT_FRAGMENT_NODE = NodeType.DOCUMENT_FRAGMENT_NODE = 11;\n    var NOTATION_NODE = NodeType.NOTATION_NODE = 12;\n\n    // ExceptionCode\n    var ExceptionCode = {};\n    var ExceptionMessage = {};\n    ExceptionCode.INDEX_SIZE_ERR = (ExceptionMessage[1] = \"Index size error\", 1);\n    ExceptionCode.DOMSTRING_SIZE_ERR = (ExceptionMessage[2] = \"DOMString size error\", 2);\n    var HIERARCHY_REQUEST_ERR = ExceptionCode.HIERARCHY_REQUEST_ERR = (ExceptionMessage[3] = \"Hierarchy request error\", 3);\n    ExceptionCode.WRONG_DOCUMENT_ERR = (ExceptionMessage[4] = \"Wrong document\", 4);\n    ExceptionCode.INVALID_CHARACTER_ERR = (ExceptionMessage[5] = \"Invalid character\", 5);\n    ExceptionCode.NO_DATA_ALLOWED_ERR = (ExceptionMessage[6] = \"No data allowed\", 6);\n    ExceptionCode.NO_MODIFICATION_ALLOWED_ERR = (ExceptionMessage[7] = \"No modification allowed\", 7);\n    var NOT_FOUND_ERR = ExceptionCode.NOT_FOUND_ERR = (ExceptionMessage[8] = \"Not found\", 8);\n    ExceptionCode.NOT_SUPPORTED_ERR = (ExceptionMessage[9] = \"Not supported\", 9);\n    var INUSE_ATTRIBUTE_ERR = ExceptionCode.INUSE_ATTRIBUTE_ERR = (ExceptionMessage[10] = \"Attribute in use\", 10);\n    //level2\n    ExceptionCode.INVALID_STATE_ERR = (ExceptionMessage[11] = \"Invalid state\", 11);\n    ExceptionCode.SYNTAX_ERR = (ExceptionMessage[12] = \"Syntax error\", 12);\n    ExceptionCode.INVALID_MODIFICATION_ERR = (ExceptionMessage[13] = \"Invalid modification\", 13);\n    ExceptionCode.NAMESPACE_ERR = (ExceptionMessage[14] = \"Invalid namespace\", 14);\n    ExceptionCode.INVALID_ACCESS_ERR = (ExceptionMessage[15] = \"Invalid access\", 15);\n\n    /**\n     * DOM Level 2\n     * Object DOMException\n     * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/ecma-script-binding.html\n     * @see http://www.w3.org/TR/REC-DOM-Level-1/ecma-script-language-binding.html\n     */\n    function DOMException(code, message) {\n        if (message instanceof Error) {\n            var error = message;\n        } else {\n            error = this;\n            Error.call(this, ExceptionMessage[code]);\n            this.message = ExceptionMessage[code];\n            if (Error.captureStackTrace) Error.captureStackTrace(this, DOMException);\n        }\n        error.code = code;\n        if (message) this.message = this.message + \": \" + message;\n        return error;\n    }\n    DOMException.prototype = Error.prototype;\n    copy(ExceptionCode, DOMException);\n\n    /**\n     * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-536297177\n     * The NodeList interface provides the abstraction of an ordered collection of nodes, without defining or constraining how this collection is implemented. NodeList objects in the DOM are live.\n     * The items in the NodeList are accessible via an integral index, starting from 0.\n     */\n    function NodeList() {}\n    NodeList.prototype = {\n        /**\n         * The number of nodes in the list. The range of valid child node indices is 0 to length-1 inclusive.\n         * @standard level1\n         */\n        length: 0,\n        /**\n         * Returns the indexth item in the collection. If index is greater than or equal to the number of nodes in the list, this returns null.\n         * @standard level1\n         * @param index  unsigned long\n         *   Index into the collection.\n         * @return Node\n         * \tThe node at the indexth position in the NodeList, or null if that is not a valid index.\n         */\n        item: function (index) {\n            return index >= 0 && index < this.length ? this[index] : null;\n        },\n        toString: function (isHTML, nodeFilter) {\n            for (var buf = [], i = 0; i < this.length; i++) {\n                serializeToString(this[i], buf, isHTML, nodeFilter);\n            }\n            return buf.join('');\n        },\n        /**\n         * @private\n         * @param {function (Node):boolean} predicate\n         * @returns {Node[]}\n         */\n        filter: function (predicate) {\n            return Array.prototype.filter.call(this, predicate);\n        },\n        /**\n         * @private\n         * @param {Node} item\n         * @returns {number}\n         */\n        indexOf: function (item) {\n            return Array.prototype.indexOf.call(this, item);\n        }\n    };\n    function LiveNodeList(node, refresh) {\n        this._node = node;\n        this._refresh = refresh;\n        _updateLiveList(this);\n    }\n    function _updateLiveList(list) {\n        var inc = list._node._inc || list._node.ownerDocument._inc;\n        if (list._inc !== inc) {\n            var ls = list._refresh(list._node);\n            __set__(list, 'length', ls.length);\n            if (!list.$$length || ls.length < list.$$length) {\n                for (var i = ls.length; (i in list); i++) {\n                    if (Object.prototype.hasOwnProperty.call(list, i)) {\n                        delete list[i];\n                    }\n                }\n            }\n            copy(ls, list);\n            list._inc = inc;\n        }\n    }\n    LiveNodeList.prototype.item = function (i) {\n        _updateLiveList(this);\n        return this[i] || null;\n    };\n    _extends(LiveNodeList, NodeList);\n\n    /**\n     * Objects implementing the NamedNodeMap interface are used\n     * to represent collections of nodes that can be accessed by name.\n     * Note that NamedNodeMap does not inherit from NodeList;\n     * NamedNodeMaps are not maintained in any particular order.\n     * Objects contained in an object implementing NamedNodeMap may also be accessed by an ordinal index,\n     * but this is simply to allow convenient enumeration of the contents of a NamedNodeMap,\n     * and does not imply that the DOM specifies an order to these Nodes.\n     * NamedNodeMap objects in the DOM are live.\n     * used for attributes or DocumentType entities\n     */\n    function NamedNodeMap() {}\n    function _findNodeIndex(list, node) {\n        var i = list.length;\n        while (i--) {\n            if (list[i] === node) {\n                return i;\n            }\n        }\n    }\n    function _addNamedNode(el, list, newAttr, oldAttr) {\n        if (oldAttr) {\n            list[_findNodeIndex(list, oldAttr)] = newAttr;\n        } else {\n            list[list.length++] = newAttr;\n        }\n        if (el) {\n            newAttr.ownerElement = el;\n            var doc = el.ownerDocument;\n            if (doc) {\n                oldAttr && _onRemoveAttribute(doc, el, oldAttr);\n                _onAddAttribute(doc, el, newAttr);\n            }\n        }\n    }\n    function _removeNamedNode(el, list, attr) {\n        //console.log('remove attr:'+attr)\n        var i = _findNodeIndex(list, attr);\n        if (i >= 0) {\n            var lastIndex = list.length - 1;\n            while (i < lastIndex) {\n                list[i] = list[++i];\n            }\n            list.length = lastIndex;\n            if (el) {\n                var doc = el.ownerDocument;\n                if (doc) {\n                    _onRemoveAttribute(doc, el, attr);\n                    attr.ownerElement = null;\n                }\n            }\n        } else {\n            throw new DOMException(NOT_FOUND_ERR, new Error(el.tagName + '@' + attr));\n        }\n    }\n    NamedNodeMap.prototype = {\n        length: 0,\n        item: NodeList.prototype.item,\n        getNamedItem: function (key) {\n            //\t\tif(key.indexOf(':')>0 || key == 'xmlns'){\n            //\t\t\treturn null;\n            //\t\t}\n            //console.log()\n            var i = this.length;\n            while (i--) {\n                var attr = this[i];\n                //console.log(attr.nodeName,key)\n                if (attr.nodeName == key) {\n                    return attr;\n                }\n            }\n        },\n        setNamedItem: function (attr) {\n            var el = attr.ownerElement;\n            if (el && el != this._ownerElement) {\n                throw new DOMException(INUSE_ATTRIBUTE_ERR);\n            }\n            var oldAttr = this.getNamedItem(attr.nodeName);\n            _addNamedNode(this._ownerElement, this, attr, oldAttr);\n            return oldAttr;\n        },\n        /* returns Node */\n        setNamedItemNS: function (attr) {\n            // raises: WRONG_DOCUMENT_ERR,NO_MODIFICATION_ALLOWED_ERR,INUSE_ATTRIBUTE_ERR\n            var el = attr.ownerElement,\n                oldAttr;\n            if (el && el != this._ownerElement) {\n                throw new DOMException(INUSE_ATTRIBUTE_ERR);\n            }\n            oldAttr = this.getNamedItemNS(attr.namespaceURI, attr.localName);\n            _addNamedNode(this._ownerElement, this, attr, oldAttr);\n            return oldAttr;\n        },\n        /* returns Node */\n        removeNamedItem: function (key) {\n            var attr = this.getNamedItem(key);\n            _removeNamedNode(this._ownerElement, this, attr);\n            return attr;\n        },\n        // raises: NOT_FOUND_ERR,NO_MODIFICATION_ALLOWED_ERR\n\n        //for level2\n        removeNamedItemNS: function (namespaceURI, localName) {\n            var attr = this.getNamedItemNS(namespaceURI, localName);\n            _removeNamedNode(this._ownerElement, this, attr);\n            return attr;\n        },\n        getNamedItemNS: function (namespaceURI, localName) {\n            var i = this.length;\n            while (i--) {\n                var node = this[i];\n                if (node.localName == localName && node.namespaceURI == namespaceURI) {\n                    return node;\n                }\n            }\n            return null;\n        }\n    };\n\n    /**\n     * The DOMImplementation interface represents an object providing methods\n     * which are not dependent on any particular document.\n     * Such an object is returned by the `Document.implementation` property.\n     *\n     * __The individual methods describe the differences compared to the specs.__\n     *\n     * @constructor\n     *\n     * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation MDN\n     * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-102161490 DOM Level 1 Core (Initial)\n     * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#ID-102161490 DOM Level 2 Core\n     * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-102161490 DOM Level 3 Core\n     * @see https://dom.spec.whatwg.org/#domimplementation DOM Living Standard\n     */\n    function DOMImplementation$1() {}\n    DOMImplementation$1.prototype = {\n        /**\n         * The DOMImplementation.hasFeature() method returns a Boolean flag indicating if a given feature is supported.\n         * The different implementations fairly diverged in what kind of features were reported.\n         * The latest version of the spec settled to force this method to always return true, where the functionality was accurate and in use.\n         *\n         * @deprecated It is deprecated and modern browsers return true in all cases.\n         *\n         * @param {string} feature\n         * @param {string} [version]\n         * @returns {boolean} always true\n         *\n         * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/hasFeature MDN\n         * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-5CED94D7 DOM Level 1 Core\n         * @see https://dom.spec.whatwg.org/#dom-domimplementation-hasfeature DOM Living Standard\n         */\n        hasFeature: function (feature, version) {\n            return true;\n        },\n        /**\n         * Creates an XML Document object of the specified type with its document element.\n         *\n         * __It behaves slightly different from the description in the living standard__:\n         * - There is no interface/class `XMLDocument`, it returns a `Document` instance.\n         * - `contentType`, `encoding`, `mode`, `origin`, `url` fields are currently not declared.\n         * - this implementation is not validating names or qualified names\n         *   (when parsing XML strings, the SAX parser takes care of that)\n         *\n         * @param {string|null} namespaceURI\n         * @param {string} qualifiedName\n         * @param {DocumentType=null} doctype\n         * @returns {Document}\n         *\n         * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocument MDN\n         * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocument DOM Level 2 Core (initial)\n         * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument  DOM Level 2 Core\n         *\n         * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract\n         * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names\n         * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names\n         */\n        createDocument: function (namespaceURI, qualifiedName, doctype) {\n            var doc = new Document();\n            doc.implementation = this;\n            doc.childNodes = new NodeList();\n            doc.doctype = doctype || null;\n            if (doctype) {\n                doc.appendChild(doctype);\n            }\n            if (qualifiedName) {\n                var root = doc.createElementNS(namespaceURI, qualifiedName);\n                doc.appendChild(root);\n            }\n            return doc;\n        },\n        /**\n         * Returns a doctype, with the given `qualifiedName`, `publicId`, and `systemId`.\n         *\n         * __This behavior is slightly different from the in the specs__:\n         * - this implementation is not validating names or qualified names\n         *   (when parsing XML strings, the SAX parser takes care of that)\n         *\n         * @param {string} qualifiedName\n         * @param {string} [publicId]\n         * @param {string} [systemId]\n         * @returns {DocumentType} which can either be used with `DOMImplementation.createDocument` upon document creation\n         * \t\t\t\t  or can be put into the document via methods like `Node.insertBefore()` or `Node.replaceChild()`\n         *\n         * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocumentType MDN\n         * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocType DOM Level 2 Core\n         * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocumenttype DOM Living Standard\n         *\n         * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract\n         * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names\n         * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names\n         */\n        createDocumentType: function (qualifiedName, publicId, systemId) {\n            var node = new DocumentType();\n            node.name = qualifiedName;\n            node.nodeName = qualifiedName;\n            node.publicId = publicId || '';\n            node.systemId = systemId || '';\n            return node;\n        }\n    };\n\n    /**\n     * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-1950641247\n     */\n\n    function Node() {}\n    Node.prototype = {\n        firstChild: null,\n        lastChild: null,\n        previousSibling: null,\n        nextSibling: null,\n        attributes: null,\n        parentNode: null,\n        childNodes: null,\n        ownerDocument: null,\n        nodeValue: null,\n        namespaceURI: null,\n        prefix: null,\n        localName: null,\n        // Modified in DOM Level 2:\n        insertBefore: function (newChild, refChild) {\n            //raises\n            return _insertBefore(this, newChild, refChild);\n        },\n        replaceChild: function (newChild, oldChild) {\n            //raises\n            _insertBefore(this, newChild, oldChild, assertPreReplacementValidityInDocument);\n            if (oldChild) {\n                this.removeChild(oldChild);\n            }\n        },\n        removeChild: function (oldChild) {\n            return _removeChild(this, oldChild);\n        },\n        appendChild: function (newChild) {\n            return this.insertBefore(newChild, null);\n        },\n        hasChildNodes: function () {\n            return this.firstChild != null;\n        },\n        cloneNode: function (deep) {\n            return cloneNode(this.ownerDocument || this, this, deep);\n        },\n        // Modified in DOM Level 2:\n        normalize: function () {\n            var child = this.firstChild;\n            while (child) {\n                var next = child.nextSibling;\n                if (next && next.nodeType == TEXT_NODE && child.nodeType == TEXT_NODE) {\n                    this.removeChild(next);\n                    child.appendData(next.data);\n                } else {\n                    child.normalize();\n                    child = next;\n                }\n            }\n        },\n        // Introduced in DOM Level 2:\n        isSupported: function (feature, version) {\n            return this.ownerDocument.implementation.hasFeature(feature, version);\n        },\n        // Introduced in DOM Level 2:\n        hasAttributes: function () {\n            return this.attributes.length > 0;\n        },\n        /**\n         * Look up the prefix associated to the given namespace URI, starting from this node.\n         * **The default namespace declarations are ignored by this method.**\n         * See Namespace Prefix Lookup for details on the algorithm used by this method.\n         *\n         * _Note: The implementation seems to be incomplete when compared to the algorithm described in the specs._\n         *\n         * @param {string | null} namespaceURI\n         * @returns {string | null}\n         * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-lookupNamespacePrefix\n         * @see https://www.w3.org/TR/DOM-Level-3-Core/namespaces-algorithms.html#lookupNamespacePrefixAlgo\n         * @see https://dom.spec.whatwg.org/#dom-node-lookupprefix\n         * @see https://github.com/xmldom/xmldom/issues/322\n         */\n        lookupPrefix: function (namespaceURI) {\n            var el = this;\n            while (el) {\n                var map = el._nsMap;\n                //console.dir(map)\n                if (map) {\n                    for (var n in map) {\n                        if (Object.prototype.hasOwnProperty.call(map, n) && map[n] === namespaceURI) {\n                            return n;\n                        }\n                    }\n                }\n                el = el.nodeType == ATTRIBUTE_NODE ? el.ownerDocument : el.parentNode;\n            }\n            return null;\n        },\n        // Introduced in DOM Level 3:\n        lookupNamespaceURI: function (prefix) {\n            var el = this;\n            while (el) {\n                var map = el._nsMap;\n                //console.dir(map)\n                if (map) {\n                    if (Object.prototype.hasOwnProperty.call(map, prefix)) {\n                        return map[prefix];\n                    }\n                }\n                el = el.nodeType == ATTRIBUTE_NODE ? el.ownerDocument : el.parentNode;\n            }\n            return null;\n        },\n        // Introduced in DOM Level 3:\n        isDefaultNamespace: function (namespaceURI) {\n            var prefix = this.lookupPrefix(namespaceURI);\n            return prefix == null;\n        }\n    };\n    function _xmlEncoder(c) {\n        return c == '<' && '&lt;' || c == '>' && '&gt;' || c == '&' && '&amp;' || c == '\"' && '&quot;' || '&#' + c.charCodeAt() + ';';\n    }\n    copy(NodeType, Node);\n    copy(NodeType, Node.prototype);\n\n    /**\n     * @param callback return true for continue,false for break\n     * @return boolean true: break visit;\n     */\n    function _visitNode(node, callback) {\n        if (callback(node)) {\n            return true;\n        }\n        if (node = node.firstChild) {\n            do {\n                if (_visitNode(node, callback)) {\n                    return true;\n                }\n            } while (node = node.nextSibling);\n        }\n    }\n    function Document() {\n        this.ownerDocument = this;\n    }\n    function _onAddAttribute(doc, el, newAttr) {\n        doc && doc._inc++;\n        var ns = newAttr.namespaceURI;\n        if (ns === NAMESPACE$2.XMLNS) {\n            //update namespace\n            el._nsMap[newAttr.prefix ? newAttr.localName : ''] = newAttr.value;\n        }\n    }\n    function _onRemoveAttribute(doc, el, newAttr, remove) {\n        doc && doc._inc++;\n        var ns = newAttr.namespaceURI;\n        if (ns === NAMESPACE$2.XMLNS) {\n            //update namespace\n            delete el._nsMap[newAttr.prefix ? newAttr.localName : ''];\n        }\n    }\n\n    /**\n     * Updates `el.childNodes`, updating the indexed items and it's `length`.\n     * Passing `newChild` means it will be appended.\n     * Otherwise it's assumed that an item has been removed,\n     * and `el.firstNode` and it's `.nextSibling` are used\n     * to walk the current list of child nodes.\n     *\n     * @param {Document} doc\n     * @param {Node} el\n     * @param {Node} [newChild]\n     * @private\n     */\n    function _onUpdateChild(doc, el, newChild) {\n        if (doc && doc._inc) {\n            doc._inc++;\n            //update childNodes\n            var cs = el.childNodes;\n            if (newChild) {\n                cs[cs.length++] = newChild;\n            } else {\n                var child = el.firstChild;\n                var i = 0;\n                while (child) {\n                    cs[i++] = child;\n                    child = child.nextSibling;\n                }\n                cs.length = i;\n                delete cs[cs.length];\n            }\n        }\n    }\n\n    /**\n     * Removes the connections between `parentNode` and `child`\n     * and any existing `child.previousSibling` or `child.nextSibling`.\n     *\n     * @see https://github.com/xmldom/xmldom/issues/135\n     * @see https://github.com/xmldom/xmldom/issues/145\n     *\n     * @param {Node} parentNode\n     * @param {Node} child\n     * @returns {Node} the child that was removed.\n     * @private\n     */\n    function _removeChild(parentNode, child) {\n        var previous = child.previousSibling;\n        var next = child.nextSibling;\n        if (previous) {\n            previous.nextSibling = next;\n        } else {\n            parentNode.firstChild = next;\n        }\n        if (next) {\n            next.previousSibling = previous;\n        } else {\n            parentNode.lastChild = previous;\n        }\n        child.parentNode = null;\n        child.previousSibling = null;\n        child.nextSibling = null;\n        _onUpdateChild(parentNode.ownerDocument, parentNode);\n        return child;\n    }\n\n    /**\n     * Returns `true` if `node` can be a parent for insertion.\n     * @param {Node} node\n     * @returns {boolean}\n     */\n    function hasValidParentNodeType(node) {\n        return node && (node.nodeType === Node.DOCUMENT_NODE || node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || node.nodeType === Node.ELEMENT_NODE);\n    }\n\n    /**\n     * Returns `true` if `node` can be inserted according to it's `nodeType`.\n     * @param {Node} node\n     * @returns {boolean}\n     */\n    function hasInsertableNodeType(node) {\n        return node && (isElementNode(node) || isTextNode(node) || isDocTypeNode(node) || node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || node.nodeType === Node.COMMENT_NODE || node.nodeType === Node.PROCESSING_INSTRUCTION_NODE);\n    }\n\n    /**\n     * Returns true if `node` is a DOCTYPE node\n     * @param {Node} node\n     * @returns {boolean}\n     */\n    function isDocTypeNode(node) {\n        return node && node.nodeType === Node.DOCUMENT_TYPE_NODE;\n    }\n\n    /**\n     * Returns true if the node is an element\n     * @param {Node} node\n     * @returns {boolean}\n     */\n    function isElementNode(node) {\n        return node && node.nodeType === Node.ELEMENT_NODE;\n    }\n    /**\n     * Returns true if `node` is a text node\n     * @param {Node} node\n     * @returns {boolean}\n     */\n    function isTextNode(node) {\n        return node && node.nodeType === Node.TEXT_NODE;\n    }\n\n    /**\n     * Check if en element node can be inserted before `child`, or at the end if child is falsy,\n     * according to the presence and position of a doctype node on the same level.\n     *\n     * @param {Document} doc The document node\n     * @param {Node} child the node that would become the nextSibling if the element would be inserted\n     * @returns {boolean} `true` if an element can be inserted before child\n     * @private\n     * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n     */\n    function isElementInsertionPossible(doc, child) {\n        var parentChildNodes = doc.childNodes || [];\n        if (find(parentChildNodes, isElementNode) || isDocTypeNode(child)) {\n            return false;\n        }\n        var docTypeNode = find(parentChildNodes, isDocTypeNode);\n        return !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));\n    }\n\n    /**\n     * Check if en element node can be inserted before `child`, or at the end if child is falsy,\n     * according to the presence and position of a doctype node on the same level.\n     *\n     * @param {Node} doc The document node\n     * @param {Node} child the node that would become the nextSibling if the element would be inserted\n     * @returns {boolean} `true` if an element can be inserted before child\n     * @private\n     * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n     */\n    function isElementReplacementPossible(doc, child) {\n        var parentChildNodes = doc.childNodes || [];\n        function hasElementChildThatIsNotChild(node) {\n            return isElementNode(node) && node !== child;\n        }\n        if (find(parentChildNodes, hasElementChildThatIsNotChild)) {\n            return false;\n        }\n        var docTypeNode = find(parentChildNodes, isDocTypeNode);\n        return !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));\n    }\n\n    /**\n     * @private\n     * Steps 1-5 of the checks before inserting and before replacing a child are the same.\n     *\n     * @param {Node} parent the parent node to insert `node` into\n     * @param {Node} node the node to insert\n     * @param {Node=} child the node that should become the `nextSibling` of `node`\n     * @returns {Node}\n     * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n     * @throws DOMException if `child` is provided but is not a child of `parent`.\n     * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n     * @see https://dom.spec.whatwg.org/#concept-node-replace\n     */\n    function assertPreInsertionValidity1to5(parent, node, child) {\n        // 1. If `parent` is not a Document, DocumentFragment, or Element node, then throw a \"HierarchyRequestError\" DOMException.\n        if (!hasValidParentNodeType(parent)) {\n            throw new DOMException(HIERARCHY_REQUEST_ERR, 'Unexpected parent node type ' + parent.nodeType);\n        }\n        // 2. If `node` is a host-including inclusive ancestor of `parent`, then throw a \"HierarchyRequestError\" DOMException.\n        // not implemented!\n        // 3. If `child` is non-null and its parent is not `parent`, then throw a \"NotFoundError\" DOMException.\n        if (child && child.parentNode !== parent) {\n            throw new DOMException(NOT_FOUND_ERR, 'child not in parent');\n        }\n        if (\n            // 4. If `node` is not a DocumentFragment, DocumentType, Element, or CharacterData node, then throw a \"HierarchyRequestError\" DOMException.\n            !hasInsertableNodeType(node) ||\n            // 5. If either `node` is a Text node and `parent` is a document,\n            // the sax parser currently adds top level text nodes, this will be fixed in 0.9.0\n            // || (node.nodeType === Node.TEXT_NODE && parent.nodeType === Node.DOCUMENT_NODE)\n            // or `node` is a doctype and `parent` is not a document, then throw a \"HierarchyRequestError\" DOMException.\n            isDocTypeNode(node) && parent.nodeType !== Node.DOCUMENT_NODE) {\n            throw new DOMException(HIERARCHY_REQUEST_ERR, 'Unexpected node type ' + node.nodeType + ' for parent node type ' + parent.nodeType);\n        }\n    }\n\n    /**\n     * @private\n     * Step 6 of the checks before inserting and before replacing a child are different.\n     *\n     * @param {Document} parent the parent node to insert `node` into\n     * @param {Node} node the node to insert\n     * @param {Node | undefined} child the node that should become the `nextSibling` of `node`\n     * @returns {Node}\n     * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n     * @throws DOMException if `child` is provided but is not a child of `parent`.\n     * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n     * @see https://dom.spec.whatwg.org/#concept-node-replace\n     */\n    function assertPreInsertionValidityInDocument(parent, node, child) {\n        var parentChildNodes = parent.childNodes || [];\n        var nodeChildNodes = node.childNodes || [];\n\n        // DocumentFragment\n        if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {\n            var nodeChildElements = nodeChildNodes.filter(isElementNode);\n            // If node has more than one element child or has a Text node child.\n            if (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');\n            }\n            // Otherwise, if `node` has one element child and either `parent` has an element child,\n            // `child` is a doctype, or `child` is non-null and a doctype is following `child`.\n            if (nodeChildElements.length === 1 && !isElementInsertionPossible(parent, child)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');\n            }\n        }\n        // Element\n        if (isElementNode(node)) {\n            // `parent` has an element child, `child` is a doctype,\n            // or `child` is non-null and a doctype is following `child`.\n            if (!isElementInsertionPossible(parent, child)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');\n            }\n        }\n        // DocumentType\n        if (isDocTypeNode(node)) {\n            // `parent` has a doctype child,\n            if (find(parentChildNodes, isDocTypeNode)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');\n            }\n            var parentElementChild = find(parentChildNodes, isElementNode);\n            // `child` is non-null and an element is preceding `child`,\n            if (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');\n            }\n            // or `child` is null and `parent` has an element child.\n            if (!child && parentElementChild) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can not be appended since element is present');\n            }\n        }\n    }\n\n    /**\n     * @private\n     * Step 6 of the checks before inserting and before replacing a child are different.\n     *\n     * @param {Document} parent the parent node to insert `node` into\n     * @param {Node} node the node to insert\n     * @param {Node | undefined} child the node that should become the `nextSibling` of `node`\n     * @returns {Node}\n     * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n     * @throws DOMException if `child` is provided but is not a child of `parent`.\n     * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n     * @see https://dom.spec.whatwg.org/#concept-node-replace\n     */\n    function assertPreReplacementValidityInDocument(parent, node, child) {\n        var parentChildNodes = parent.childNodes || [];\n        var nodeChildNodes = node.childNodes || [];\n\n        // DocumentFragment\n        if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {\n            var nodeChildElements = nodeChildNodes.filter(isElementNode);\n            // If `node` has more than one element child or has a Text node child.\n            if (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');\n            }\n            // Otherwise, if `node` has one element child and either `parent` has an element child that is not `child` or a doctype is following `child`.\n            if (nodeChildElements.length === 1 && !isElementReplacementPossible(parent, child)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');\n            }\n        }\n        // Element\n        if (isElementNode(node)) {\n            // `parent` has an element child that is not `child` or a doctype is following `child`.\n            if (!isElementReplacementPossible(parent, child)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');\n            }\n        }\n        // DocumentType\n        if (isDocTypeNode(node)) {\n            function hasDoctypeChildThatIsNotChild(node) {\n                return isDocTypeNode(node) && node !== child;\n            }\n\n            // `parent` has a doctype child that is not `child`,\n            if (find(parentChildNodes, hasDoctypeChildThatIsNotChild)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');\n            }\n            var parentElementChild = find(parentChildNodes, isElementNode);\n            // or an element is preceding `child`.\n            if (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {\n                throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');\n            }\n        }\n    }\n\n    /**\n     * @private\n     * @param {Node} parent the parent node to insert `node` into\n     * @param {Node} node the node to insert\n     * @param {Node=} child the node that should become the `nextSibling` of `node`\n     * @returns {Node}\n     * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n     * @throws DOMException if `child` is provided but is not a child of `parent`.\n     * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n     */\n    function _insertBefore(parent, node, child, _inDocumentAssertion) {\n        // To ensure pre-insertion validity of a node into a parent before a child, run these steps:\n        assertPreInsertionValidity1to5(parent, node, child);\n\n        // If parent is a document, and any of the statements below, switched on the interface node implements,\n        // are true, then throw a \"HierarchyRequestError\" DOMException.\n        if (parent.nodeType === Node.DOCUMENT_NODE) {\n            (_inDocumentAssertion || assertPreInsertionValidityInDocument)(parent, node, child);\n        }\n        var cp = node.parentNode;\n        if (cp) {\n            cp.removeChild(node); //remove and update\n        }\n\n        if (node.nodeType === DOCUMENT_FRAGMENT_NODE) {\n            var newFirst = node.firstChild;\n            if (newFirst == null) {\n                return node;\n            }\n            var newLast = node.lastChild;\n        } else {\n            newFirst = newLast = node;\n        }\n        var pre = child ? child.previousSibling : parent.lastChild;\n        newFirst.previousSibling = pre;\n        newLast.nextSibling = child;\n        if (pre) {\n            pre.nextSibling = newFirst;\n        } else {\n            parent.firstChild = newFirst;\n        }\n        if (child == null) {\n            parent.lastChild = newLast;\n        } else {\n            child.previousSibling = newLast;\n        }\n        do {\n            newFirst.parentNode = parent;\n        } while (newFirst !== newLast && (newFirst = newFirst.nextSibling));\n        _onUpdateChild(parent.ownerDocument || parent, parent);\n        //console.log(parent.lastChild.nextSibling == null)\n        if (node.nodeType == DOCUMENT_FRAGMENT_NODE) {\n            node.firstChild = node.lastChild = null;\n        }\n        return node;\n    }\n\n    /**\n     * Appends `newChild` to `parentNode`.\n     * If `newChild` is already connected to a `parentNode` it is first removed from it.\n     *\n     * @see https://github.com/xmldom/xmldom/issues/135\n     * @see https://github.com/xmldom/xmldom/issues/145\n     * @param {Node} parentNode\n     * @param {Node} newChild\n     * @returns {Node}\n     * @private\n     */\n    function _appendSingleChild(parentNode, newChild) {\n        if (newChild.parentNode) {\n            newChild.parentNode.removeChild(newChild);\n        }\n        newChild.parentNode = parentNode;\n        newChild.previousSibling = parentNode.lastChild;\n        newChild.nextSibling = null;\n        if (newChild.previousSibling) {\n            newChild.previousSibling.nextSibling = newChild;\n        } else {\n            parentNode.firstChild = newChild;\n        }\n        parentNode.lastChild = newChild;\n        _onUpdateChild(parentNode.ownerDocument, parentNode, newChild);\n        return newChild;\n    }\n    Document.prototype = {\n        //implementation : null,\n        nodeName: '#document',\n        nodeType: DOCUMENT_NODE,\n        /**\n         * The DocumentType node of the document.\n         *\n         * @readonly\n         * @type DocumentType\n         */\n        doctype: null,\n        documentElement: null,\n        _inc: 1,\n        insertBefore: function (newChild, refChild) {\n            //raises\n            if (newChild.nodeType == DOCUMENT_FRAGMENT_NODE) {\n                var child = newChild.firstChild;\n                while (child) {\n                    var next = child.nextSibling;\n                    this.insertBefore(child, refChild);\n                    child = next;\n                }\n                return newChild;\n            }\n            _insertBefore(this, newChild, refChild);\n            newChild.ownerDocument = this;\n            if (this.documentElement === null && newChild.nodeType === ELEMENT_NODE) {\n                this.documentElement = newChild;\n            }\n            return newChild;\n        },\n        removeChild: function (oldChild) {\n            if (this.documentElement == oldChild) {\n                this.documentElement = null;\n            }\n            return _removeChild(this, oldChild);\n        },\n        replaceChild: function (newChild, oldChild) {\n            //raises\n            _insertBefore(this, newChild, oldChild, assertPreReplacementValidityInDocument);\n            newChild.ownerDocument = this;\n            if (oldChild) {\n                this.removeChild(oldChild);\n            }\n            if (isElementNode(newChild)) {\n                this.documentElement = newChild;\n            }\n        },\n        // Introduced in DOM Level 2:\n        importNode: function (importedNode, deep) {\n            return importNode(this, importedNode, deep);\n        },\n        // Introduced in DOM Level 2:\n        getElementById: function (id) {\n            var rtv = null;\n            _visitNode(this.documentElement, function (node) {\n                if (node.nodeType == ELEMENT_NODE) {\n                    if (node.getAttribute('id') == id) {\n                        rtv = node;\n                        return true;\n                    }\n                }\n            });\n            return rtv;\n        },\n        /**\n         * The `getElementsByClassName` method of `Document` interface returns an array-like object\n         * of all child elements which have **all** of the given class name(s).\n         *\n         * Returns an empty list if `classeNames` is an empty string or only contains HTML white space characters.\n         *\n         *\n         * Warning: This is a live LiveNodeList.\n         * Changes in the DOM will reflect in the array as the changes occur.\n         * If an element selected by this array no longer qualifies for the selector,\n         * it will automatically be removed. Be aware of this for iteration purposes.\n         *\n         * @param {string} classNames is a string representing the class name(s) to match; multiple class names are separated by (ASCII-)whitespace\n         *\n         * @see https://developer.mozilla.org/en-US/docs/Web/API/Document/getElementsByClassName\n         * @see https://dom.spec.whatwg.org/#concept-getelementsbyclassname\n         */\n        getElementsByClassName: function (classNames) {\n            var classNamesSet = toOrderedSet(classNames);\n            return new LiveNodeList(this, function (base) {\n                var ls = [];\n                if (classNamesSet.length > 0) {\n                    _visitNode(base.documentElement, function (node) {\n                        if (node !== base && node.nodeType === ELEMENT_NODE) {\n                            var nodeClassNames = node.getAttribute('class');\n                            // can be null if the attribute does not exist\n                            if (nodeClassNames) {\n                                // before splitting and iterating just compare them for the most common case\n                                var matches = classNames === nodeClassNames;\n                                if (!matches) {\n                                    var nodeClassNamesSet = toOrderedSet(nodeClassNames);\n                                    matches = classNamesSet.every(arrayIncludes(nodeClassNamesSet));\n                                }\n                                if (matches) {\n                                    ls.push(node);\n                                }\n                            }\n                        }\n                    });\n                }\n                return ls;\n            });\n        },\n        //document factory method:\n        createElement: function (tagName) {\n            var node = new Element();\n            node.ownerDocument = this;\n            node.nodeName = tagName;\n            node.tagName = tagName;\n            node.localName = tagName;\n            node.childNodes = new NodeList();\n            var attrs = node.attributes = new NamedNodeMap();\n            attrs._ownerElement = node;\n            return node;\n        },\n        createDocumentFragment: function () {\n            var node = new DocumentFragment();\n            node.ownerDocument = this;\n            node.childNodes = new NodeList();\n            return node;\n        },\n        createTextNode: function (data) {\n            var node = new Text();\n            node.ownerDocument = this;\n            node.appendData(data);\n            return node;\n        },\n        createComment: function (data) {\n            var node = new Comment();\n            node.ownerDocument = this;\n            node.appendData(data);\n            return node;\n        },\n        createCDATASection: function (data) {\n            var node = new CDATASection();\n            node.ownerDocument = this;\n            node.appendData(data);\n            return node;\n        },\n        createProcessingInstruction: function (target, data) {\n            var node = new ProcessingInstruction();\n            node.ownerDocument = this;\n            node.tagName = node.nodeName = node.target = target;\n            node.nodeValue = node.data = data;\n            return node;\n        },\n        createAttribute: function (name) {\n            var node = new Attr();\n            node.ownerDocument = this;\n            node.name = name;\n            node.nodeName = name;\n            node.localName = name;\n            node.specified = true;\n            return node;\n        },\n        createEntityReference: function (name) {\n            var node = new EntityReference();\n            node.ownerDocument = this;\n            node.nodeName = name;\n            return node;\n        },\n        // Introduced in DOM Level 2:\n        createElementNS: function (namespaceURI, qualifiedName) {\n            var node = new Element();\n            var pl = qualifiedName.split(':');\n            var attrs = node.attributes = new NamedNodeMap();\n            node.childNodes = new NodeList();\n            node.ownerDocument = this;\n            node.nodeName = qualifiedName;\n            node.tagName = qualifiedName;\n            node.namespaceURI = namespaceURI;\n            if (pl.length == 2) {\n                node.prefix = pl[0];\n                node.localName = pl[1];\n            } else {\n                //el.prefix = null;\n                node.localName = qualifiedName;\n            }\n            attrs._ownerElement = node;\n            return node;\n        },\n        // Introduced in DOM Level 2:\n        createAttributeNS: function (namespaceURI, qualifiedName) {\n            var node = new Attr();\n            var pl = qualifiedName.split(':');\n            node.ownerDocument = this;\n            node.nodeName = qualifiedName;\n            node.name = qualifiedName;\n            node.namespaceURI = namespaceURI;\n            node.specified = true;\n            if (pl.length == 2) {\n                node.prefix = pl[0];\n                node.localName = pl[1];\n            } else {\n                //el.prefix = null;\n                node.localName = qualifiedName;\n            }\n            return node;\n        }\n    };\n    _extends(Document, Node);\n    function Element() {\n        this._nsMap = {};\n    }\n    Element.prototype = {\n        nodeType: ELEMENT_NODE,\n        hasAttribute: function (name) {\n            return this.getAttributeNode(name) != null;\n        },\n        getAttribute: function (name) {\n            var attr = this.getAttributeNode(name);\n            return attr && attr.value || '';\n        },\n        getAttributeNode: function (name) {\n            return this.attributes.getNamedItem(name);\n        },\n        setAttribute: function (name, value) {\n            var attr = this.ownerDocument.createAttribute(name);\n            attr.value = attr.nodeValue = \"\" + value;\n            this.setAttributeNode(attr);\n        },\n        removeAttribute: function (name) {\n            var attr = this.getAttributeNode(name);\n            attr && this.removeAttributeNode(attr);\n        },\n        //four real opeartion method\n        appendChild: function (newChild) {\n            if (newChild.nodeType === DOCUMENT_FRAGMENT_NODE) {\n                return this.insertBefore(newChild, null);\n            } else {\n                return _appendSingleChild(this, newChild);\n            }\n        },\n        setAttributeNode: function (newAttr) {\n            return this.attributes.setNamedItem(newAttr);\n        },\n        setAttributeNodeNS: function (newAttr) {\n            return this.attributes.setNamedItemNS(newAttr);\n        },\n        removeAttributeNode: function (oldAttr) {\n            //console.log(this == oldAttr.ownerElement)\n            return this.attributes.removeNamedItem(oldAttr.nodeName);\n        },\n        //get real attribute name,and remove it by removeAttributeNode\n        removeAttributeNS: function (namespaceURI, localName) {\n            var old = this.getAttributeNodeNS(namespaceURI, localName);\n            old && this.removeAttributeNode(old);\n        },\n        hasAttributeNS: function (namespaceURI, localName) {\n            return this.getAttributeNodeNS(namespaceURI, localName) != null;\n        },\n        getAttributeNS: function (namespaceURI, localName) {\n            var attr = this.getAttributeNodeNS(namespaceURI, localName);\n            return attr && attr.value || '';\n        },\n        setAttributeNS: function (namespaceURI, qualifiedName, value) {\n            var attr = this.ownerDocument.createAttributeNS(namespaceURI, qualifiedName);\n            attr.value = attr.nodeValue = \"\" + value;\n            this.setAttributeNode(attr);\n        },\n        getAttributeNodeNS: function (namespaceURI, localName) {\n            return this.attributes.getNamedItemNS(namespaceURI, localName);\n        },\n        getElementsByTagName: function (tagName) {\n            return new LiveNodeList(this, function (base) {\n                var ls = [];\n                _visitNode(base, function (node) {\n                    if (node !== base && node.nodeType == ELEMENT_NODE && (tagName === '*' || node.tagName == tagName)) {\n                        ls.push(node);\n                    }\n                });\n                return ls;\n            });\n        },\n        getElementsByTagNameNS: function (namespaceURI, localName) {\n            return new LiveNodeList(this, function (base) {\n                var ls = [];\n                _visitNode(base, function (node) {\n                    if (node !== base && node.nodeType === ELEMENT_NODE && (namespaceURI === '*' || node.namespaceURI === namespaceURI) && (localName === '*' || node.localName == localName)) {\n                        ls.push(node);\n                    }\n                });\n                return ls;\n            });\n        }\n    };\n    Document.prototype.getElementsByTagName = Element.prototype.getElementsByTagName;\n    Document.prototype.getElementsByTagNameNS = Element.prototype.getElementsByTagNameNS;\n    _extends(Element, Node);\n    function Attr() {}\n    Attr.prototype.nodeType = ATTRIBUTE_NODE;\n    _extends(Attr, Node);\n    function CharacterData() {}\n    CharacterData.prototype = {\n        data: '',\n        substringData: function (offset, count) {\n            return this.data.substring(offset, offset + count);\n        },\n        appendData: function (text) {\n            text = this.data + text;\n            this.nodeValue = this.data = text;\n            this.length = text.length;\n        },\n        insertData: function (offset, text) {\n            this.replaceData(offset, 0, text);\n        },\n        appendChild: function (newChild) {\n            throw new Error(ExceptionMessage[HIERARCHY_REQUEST_ERR]);\n        },\n        deleteData: function (offset, count) {\n            this.replaceData(offset, count, \"\");\n        },\n        replaceData: function (offset, count, text) {\n            var start = this.data.substring(0, offset);\n            var end = this.data.substring(offset + count);\n            text = start + text + end;\n            this.nodeValue = this.data = text;\n            this.length = text.length;\n        }\n    };\n    _extends(CharacterData, Node);\n    function Text() {}\n    Text.prototype = {\n        nodeName: \"#text\",\n        nodeType: TEXT_NODE,\n        splitText: function (offset) {\n            var text = this.data;\n            var newText = text.substring(offset);\n            text = text.substring(0, offset);\n            this.data = this.nodeValue = text;\n            this.length = text.length;\n            var newNode = this.ownerDocument.createTextNode(newText);\n            if (this.parentNode) {\n                this.parentNode.insertBefore(newNode, this.nextSibling);\n            }\n            return newNode;\n        }\n    };\n    _extends(Text, CharacterData);\n    function Comment() {}\n    Comment.prototype = {\n        nodeName: \"#comment\",\n        nodeType: COMMENT_NODE\n    };\n    _extends(Comment, CharacterData);\n    function CDATASection() {}\n    CDATASection.prototype = {\n        nodeName: \"#cdata-section\",\n        nodeType: CDATA_SECTION_NODE\n    };\n    _extends(CDATASection, CharacterData);\n    function DocumentType() {}\n    DocumentType.prototype.nodeType = DOCUMENT_TYPE_NODE;\n    _extends(DocumentType, Node);\n    function Notation() {}\n    Notation.prototype.nodeType = NOTATION_NODE;\n    _extends(Notation, Node);\n    function Entity() {}\n    Entity.prototype.nodeType = ENTITY_NODE;\n    _extends(Entity, Node);\n    function EntityReference() {}\n    EntityReference.prototype.nodeType = ENTITY_REFERENCE_NODE;\n    _extends(EntityReference, Node);\n    function DocumentFragment() {}\n    DocumentFragment.prototype.nodeName = \"#document-fragment\";\n    DocumentFragment.prototype.nodeType = DOCUMENT_FRAGMENT_NODE;\n    _extends(DocumentFragment, Node);\n    function ProcessingInstruction() {}\n    ProcessingInstruction.prototype.nodeType = PROCESSING_INSTRUCTION_NODE;\n    _extends(ProcessingInstruction, Node);\n    function XMLSerializer() {}\n    XMLSerializer.prototype.serializeToString = function (node, isHtml, nodeFilter) {\n        return nodeSerializeToString.call(node, isHtml, nodeFilter);\n    };\n    Node.prototype.toString = nodeSerializeToString;\n    function nodeSerializeToString(isHtml, nodeFilter) {\n        var buf = [];\n        var refNode = this.nodeType == 9 && this.documentElement || this;\n        var prefix = refNode.prefix;\n        var uri = refNode.namespaceURI;\n        if (uri && prefix == null) {\n            //console.log(prefix)\n            var prefix = refNode.lookupPrefix(uri);\n            if (prefix == null) {\n                //isHTML = true;\n                var visibleNamespaces = [{\n                    namespace: uri,\n                    prefix: null\n                }\n                    //{namespace:uri,prefix:''}\n                ];\n            }\n        }\n\n        serializeToString(this, buf, isHtml, nodeFilter, visibleNamespaces);\n        //console.log('###',this.nodeType,uri,prefix,buf.join(''))\n        return buf.join('');\n    }\n    function needNamespaceDefine(node, isHTML, visibleNamespaces) {\n        var prefix = node.prefix || '';\n        var uri = node.namespaceURI;\n        // According to [Namespaces in XML 1.0](https://www.w3.org/TR/REC-xml-names/#ns-using) ,\n        // and more specifically https://www.w3.org/TR/REC-xml-names/#nsc-NoPrefixUndecl :\n        // > In a namespace declaration for a prefix [...], the attribute value MUST NOT be empty.\n        // in a similar manner [Namespaces in XML 1.1](https://www.w3.org/TR/xml-names11/#ns-using)\n        // and more specifically https://www.w3.org/TR/xml-names11/#nsc-NSDeclared :\n        // > [...] Furthermore, the attribute value [...] must not be an empty string.\n        // so serializing empty namespace value like xmlns:ds=\"\" would produce an invalid XML document.\n        if (!uri) {\n            return false;\n        }\n        if (prefix === \"xml\" && uri === NAMESPACE$2.XML || uri === NAMESPACE$2.XMLNS) {\n            return false;\n        }\n        var i = visibleNamespaces.length;\n        while (i--) {\n            var ns = visibleNamespaces[i];\n            // get namespace prefix\n            if (ns.prefix === prefix) {\n                return ns.namespace !== uri;\n            }\n        }\n        return true;\n    }\n    /**\n     * Well-formed constraint: No < in Attribute Values\n     * > The replacement text of any entity referred to directly or indirectly\n     * > in an attribute value must not contain a <.\n     * @see https://www.w3.org/TR/xml11/#CleanAttrVals\n     * @see https://www.w3.org/TR/xml11/#NT-AttValue\n     *\n     * Literal whitespace other than space that appear in attribute values\n     * are serialized as their entity references, so they will be preserved.\n     * (In contrast to whitespace literals in the input which are normalized to spaces)\n     * @see https://www.w3.org/TR/xml11/#AVNormalize\n     * @see https://w3c.github.io/DOM-Parsing/#serializing-an-element-s-attributes\n     */\n    function addSerializedAttribute(buf, qualifiedName, value) {\n        buf.push(' ', qualifiedName, '=\"', value.replace(/[<>&\"\\t\\n\\r]/g, _xmlEncoder), '\"');\n    }\n    function serializeToString(node, buf, isHTML, nodeFilter, visibleNamespaces) {\n        if (!visibleNamespaces) {\n            visibleNamespaces = [];\n        }\n        if (nodeFilter) {\n            node = nodeFilter(node);\n            if (node) {\n                if (typeof node == 'string') {\n                    buf.push(node);\n                    return;\n                }\n            } else {\n                return;\n            }\n            //buf.sort.apply(attrs, attributeSorter);\n        }\n\n        switch (node.nodeType) {\n            case ELEMENT_NODE:\n                var attrs = node.attributes;\n                var len = attrs.length;\n                var child = node.firstChild;\n                var nodeName = node.tagName;\n                isHTML = NAMESPACE$2.isHTML(node.namespaceURI) || isHTML;\n                var prefixedNodeName = nodeName;\n                if (!isHTML && !node.prefix && node.namespaceURI) {\n                    var defaultNS;\n                    // lookup current default ns from `xmlns` attribute\n                    for (var ai = 0; ai < attrs.length; ai++) {\n                        if (attrs.item(ai).name === 'xmlns') {\n                            defaultNS = attrs.item(ai).value;\n                            break;\n                        }\n                    }\n                    if (!defaultNS) {\n                        // lookup current default ns in visibleNamespaces\n                        for (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {\n                            var namespace = visibleNamespaces[nsi];\n                            if (namespace.prefix === '' && namespace.namespace === node.namespaceURI) {\n                                defaultNS = namespace.namespace;\n                                break;\n                            }\n                        }\n                    }\n                    if (defaultNS !== node.namespaceURI) {\n                        for (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {\n                            var namespace = visibleNamespaces[nsi];\n                            if (namespace.namespace === node.namespaceURI) {\n                                if (namespace.prefix) {\n                                    prefixedNodeName = namespace.prefix + ':' + nodeName;\n                                }\n                                break;\n                            }\n                        }\n                    }\n                }\n                buf.push('<', prefixedNodeName);\n                for (var i = 0; i < len; i++) {\n                    // add namespaces for attributes\n                    var attr = attrs.item(i);\n                    if (attr.prefix == 'xmlns') {\n                        visibleNamespaces.push({\n                            prefix: attr.localName,\n                            namespace: attr.value\n                        });\n                    } else if (attr.nodeName == 'xmlns') {\n                        visibleNamespaces.push({\n                            prefix: '',\n                            namespace: attr.value\n                        });\n                    }\n                }\n                for (var i = 0; i < len; i++) {\n                    var attr = attrs.item(i);\n                    if (needNamespaceDefine(attr, isHTML, visibleNamespaces)) {\n                        var prefix = attr.prefix || '';\n                        var uri = attr.namespaceURI;\n                        addSerializedAttribute(buf, prefix ? 'xmlns:' + prefix : \"xmlns\", uri);\n                        visibleNamespaces.push({\n                            prefix: prefix,\n                            namespace: uri\n                        });\n                    }\n                    serializeToString(attr, buf, isHTML, nodeFilter, visibleNamespaces);\n                }\n\n                // add namespace for current node\n                if (nodeName === prefixedNodeName && needNamespaceDefine(node, isHTML, visibleNamespaces)) {\n                    var prefix = node.prefix || '';\n                    var uri = node.namespaceURI;\n                    addSerializedAttribute(buf, prefix ? 'xmlns:' + prefix : \"xmlns\", uri);\n                    visibleNamespaces.push({\n                        prefix: prefix,\n                        namespace: uri\n                    });\n                }\n                if (child || isHTML && !/^(?:meta|link|img|br|hr|input)$/i.test(nodeName)) {\n                    buf.push('>');\n                    //if is cdata child node\n                    if (isHTML && /^script$/i.test(nodeName)) {\n                        while (child) {\n                            if (child.data) {\n                                buf.push(child.data);\n                            } else {\n                                serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());\n                            }\n                            child = child.nextSibling;\n                        }\n                    } else {\n                        while (child) {\n                            serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());\n                            child = child.nextSibling;\n                        }\n                    }\n                    buf.push('</', prefixedNodeName, '>');\n                } else {\n                    buf.push('/>');\n                }\n                // remove added visible namespaces\n                //visibleNamespaces.length = startVisibleNamespaces;\n                return;\n            case DOCUMENT_NODE:\n            case DOCUMENT_FRAGMENT_NODE:\n                var child = node.firstChild;\n                while (child) {\n                    serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());\n                    child = child.nextSibling;\n                }\n                return;\n            case ATTRIBUTE_NODE:\n                return addSerializedAttribute(buf, node.name, node.value);\n            case TEXT_NODE:\n                /**\n                 * The ampersand character (&) and the left angle bracket (<) must not appear in their literal form,\n                 * except when used as markup delimiters, or within a comment, a processing instruction, or a CDATA section.\n                 * If they are needed elsewhere, they must be escaped using either numeric character references or the strings\n                 * `&amp;` and `&lt;` respectively.\n                 * The right angle bracket (>) may be represented using the string \" &gt; \", and must, for compatibility,\n                 * be escaped using either `&gt;` or a character reference when it appears in the string `]]>` in content,\n                 * when that string is not marking the end of a CDATA section.\n                 *\n                 * In the content of elements, character data is any string of characters\n                 * which does not contain the start-delimiter of any markup\n                 * and does not include the CDATA-section-close delimiter, `]]>`.\n                 *\n                 * @see https://www.w3.org/TR/xml/#NT-CharData\n                 * @see https://w3c.github.io/DOM-Parsing/#xml-serializing-a-text-node\n                 */\n                return buf.push(node.data.replace(/[<&>]/g, _xmlEncoder));\n            case CDATA_SECTION_NODE:\n                return buf.push('<![CDATA[', node.data, ']]>');\n            case COMMENT_NODE:\n                return buf.push(\"<!--\", node.data, \"-->\");\n            case DOCUMENT_TYPE_NODE:\n                var pubid = node.publicId;\n                var sysid = node.systemId;\n                buf.push('<!DOCTYPE ', node.name);\n                if (pubid) {\n                    buf.push(' PUBLIC ', pubid);\n                    if (sysid && sysid != '.') {\n                        buf.push(' ', sysid);\n                    }\n                    buf.push('>');\n                } else if (sysid && sysid != '.') {\n                    buf.push(' SYSTEM ', sysid, '>');\n                } else {\n                    var sub = node.internalSubset;\n                    if (sub) {\n                        buf.push(\" [\", sub, \"]\");\n                    }\n                    buf.push(\">\");\n                }\n                return;\n            case PROCESSING_INSTRUCTION_NODE:\n                return buf.push(\"<?\", node.target, \" \", node.data, \"?>\");\n            case ENTITY_REFERENCE_NODE:\n                return buf.push('&', node.nodeName, ';');\n            //case ENTITY_NODE:\n            //case NOTATION_NODE:\n            default:\n                buf.push('??', node.nodeName);\n        }\n    }\n    function importNode(doc, node, deep) {\n        var node2;\n        switch (node.nodeType) {\n            case ELEMENT_NODE:\n                node2 = node.cloneNode(false);\n                node2.ownerDocument = doc;\n            //var attrs = node2.attributes;\n            //var len = attrs.length;\n            //for(var i=0;i<len;i++){\n            //node2.setAttributeNodeNS(importNode(doc,attrs.item(i),deep));\n            //}\n            case DOCUMENT_FRAGMENT_NODE:\n                break;\n            case ATTRIBUTE_NODE:\n                deep = true;\n                break;\n            //case ENTITY_REFERENCE_NODE:\n            //case PROCESSING_INSTRUCTION_NODE:\n            ////case TEXT_NODE:\n            //case CDATA_SECTION_NODE:\n            //case COMMENT_NODE:\n            //\tdeep = false;\n            //\tbreak;\n            //case DOCUMENT_NODE:\n            //case DOCUMENT_TYPE_NODE:\n            //cannot be imported.\n            //case ENTITY_NODE:\n            //case NOTATION_NODE：\n            //can not hit in level3\n            //default:throw e;\n        }\n\n        if (!node2) {\n            node2 = node.cloneNode(false); //false\n        }\n\n        node2.ownerDocument = doc;\n        node2.parentNode = null;\n        if (deep) {\n            var child = node.firstChild;\n            while (child) {\n                node2.appendChild(importNode(doc, child, deep));\n                child = child.nextSibling;\n            }\n        }\n        return node2;\n    }\n    //\n    //var _relationMap = {firstChild:1,lastChild:1,previousSibling:1,nextSibling:1,\n    //\t\t\t\t\tattributes:1,childNodes:1,parentNode:1,documentElement:1,doctype,};\n    function cloneNode(doc, node, deep) {\n        var node2 = new node.constructor();\n        for (var n in node) {\n            if (Object.prototype.hasOwnProperty.call(node, n)) {\n                var v = node[n];\n                if (typeof v != \"object\") {\n                    if (v != node2[n]) {\n                        node2[n] = v;\n                    }\n                }\n            }\n        }\n        if (node.childNodes) {\n            node2.childNodes = new NodeList();\n        }\n        node2.ownerDocument = doc;\n        switch (node2.nodeType) {\n            case ELEMENT_NODE:\n                var attrs = node.attributes;\n                var attrs2 = node2.attributes = new NamedNodeMap();\n                var len = attrs.length;\n                attrs2._ownerElement = node2;\n                for (var i = 0; i < len; i++) {\n                    node2.setAttributeNode(cloneNode(doc, attrs.item(i), true));\n                }\n                break;\n            case ATTRIBUTE_NODE:\n                deep = true;\n        }\n        if (deep) {\n            var child = node.firstChild;\n            while (child) {\n                node2.appendChild(cloneNode(doc, child, deep));\n                child = child.nextSibling;\n            }\n        }\n        return node2;\n    }\n    function __set__(object, key, value) {\n        object[key] = value;\n    }\n    //do dynamic\n    try {\n        if (Object.defineProperty) {\n            Object.defineProperty(LiveNodeList.prototype, 'length', {\n                get: function () {\n                    _updateLiveList(this);\n                    return this.$$length;\n                }\n            });\n            Object.defineProperty(Node.prototype, 'textContent', {\n                get: function () {\n                    return getTextContent(this);\n                },\n                set: function (data) {\n                    switch (this.nodeType) {\n                        case ELEMENT_NODE:\n                        case DOCUMENT_FRAGMENT_NODE:\n                            while (this.firstChild) {\n                                this.removeChild(this.firstChild);\n                            }\n                            if (data || String(data)) {\n                                this.appendChild(this.ownerDocument.createTextNode(data));\n                            }\n                            break;\n                        default:\n                            this.data = data;\n                            this.value = data;\n                            this.nodeValue = data;\n                    }\n                }\n            });\n            function getTextContent(node) {\n                switch (node.nodeType) {\n                    case ELEMENT_NODE:\n                    case DOCUMENT_FRAGMENT_NODE:\n                        var buf = [];\n                        node = node.firstChild;\n                        while (node) {\n                            if (node.nodeType !== 7 && node.nodeType !== 8) {\n                                buf.push(getTextContent(node));\n                            }\n                            node = node.nextSibling;\n                        }\n                        return buf.join('');\n                    default:\n                        return node.nodeValue;\n                }\n            }\n            __set__ = function (object, key, value) {\n                //console.log(value)\n                object['$$' + key] = value;\n            };\n        }\n    } catch (e) {//ie8\n    }\n\n    //if(typeof require == 'function'){\n    var DocumentType_1 = DocumentType;\n    var DOMException_1 = DOMException;\n    var DOMImplementation_1 = DOMImplementation$1;\n    var Element_1 = Element;\n    var Node_1 = Node;\n    var NodeList_1 = NodeList;\n    var XMLSerializer_1 = XMLSerializer;\n    //}\n\n    var dom = {\n        DocumentType: DocumentType_1,\n        DOMException: DOMException_1,\n        DOMImplementation: DOMImplementation_1,\n        Element: Element_1,\n        Node: Node_1,\n        NodeList: NodeList_1,\n        XMLSerializer: XMLSerializer_1\n    };\n\n    var entities = createCommonjsModule(function (module, exports) {\n\n        var freeze = conventions.freeze;\n\n        /**\n         * The entities that are predefined in every XML document.\n         *\n         * @see https://www.w3.org/TR/2006/REC-xml11-20060816/#sec-predefined-ent W3C XML 1.1\n         * @see https://www.w3.org/TR/2008/REC-xml-20081126/#sec-predefined-ent W3C XML 1.0\n         * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Predefined_entities_in_XML Wikipedia\n         */\n        exports.XML_ENTITIES = freeze({\n            amp: '&',\n            apos: \"'\",\n            gt: '>',\n            lt: '<',\n            quot: '\"'\n        });\n\n        /**\n         * A map of all entities that are detected in an HTML document.\n         * They contain all entries from `XML_ENTITIES`.\n         *\n         * @see XML_ENTITIES\n         * @see DOMParser.parseFromString\n         * @see DOMImplementation.prototype.createHTMLDocument\n         * @see https://html.spec.whatwg.org/#named-character-references WHATWG HTML(5) Spec\n         * @see https://html.spec.whatwg.org/entities.json JSON\n         * @see https://www.w3.org/TR/xml-entity-names/ W3C XML Entity Names\n         * @see https://www.w3.org/TR/html4/sgml/entities.html W3C HTML4/SGML\n         * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Character_entity_references_in_HTML Wikipedia (HTML)\n         * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Entities_representing_special_characters_in_XHTML Wikpedia (XHTML)\n         */\n        exports.HTML_ENTITIES = freeze({\n            Aacute: '\\u00C1',\n            aacute: '\\u00E1',\n            Abreve: '\\u0102',\n            abreve: '\\u0103',\n            ac: '\\u223E',\n            acd: '\\u223F',\n            acE: '\\u223E\\u0333',\n            Acirc: '\\u00C2',\n            acirc: '\\u00E2',\n            acute: '\\u00B4',\n            Acy: '\\u0410',\n            acy: '\\u0430',\n            AElig: '\\u00C6',\n            aelig: '\\u00E6',\n            af: '\\u2061',\n            Afr: '\\uD835\\uDD04',\n            afr: '\\uD835\\uDD1E',\n            Agrave: '\\u00C0',\n            agrave: '\\u00E0',\n            alefsym: '\\u2135',\n            aleph: '\\u2135',\n            Alpha: '\\u0391',\n            alpha: '\\u03B1',\n            Amacr: '\\u0100',\n            amacr: '\\u0101',\n            amalg: '\\u2A3F',\n            AMP: '\\u0026',\n            amp: '\\u0026',\n            And: '\\u2A53',\n            and: '\\u2227',\n            andand: '\\u2A55',\n            andd: '\\u2A5C',\n            andslope: '\\u2A58',\n            andv: '\\u2A5A',\n            ang: '\\u2220',\n            ange: '\\u29A4',\n            angle: '\\u2220',\n            angmsd: '\\u2221',\n            angmsdaa: '\\u29A8',\n            angmsdab: '\\u29A9',\n            angmsdac: '\\u29AA',\n            angmsdad: '\\u29AB',\n            angmsdae: '\\u29AC',\n            angmsdaf: '\\u29AD',\n            angmsdag: '\\u29AE',\n            angmsdah: '\\u29AF',\n            angrt: '\\u221F',\n            angrtvb: '\\u22BE',\n            angrtvbd: '\\u299D',\n            angsph: '\\u2222',\n            angst: '\\u00C5',\n            angzarr: '\\u237C',\n            Aogon: '\\u0104',\n            aogon: '\\u0105',\n            Aopf: '\\uD835\\uDD38',\n            aopf: '\\uD835\\uDD52',\n            ap: '\\u2248',\n            apacir: '\\u2A6F',\n            apE: '\\u2A70',\n            ape: '\\u224A',\n            apid: '\\u224B',\n            apos: '\\u0027',\n            ApplyFunction: '\\u2061',\n            approx: '\\u2248',\n            approxeq: '\\u224A',\n            Aring: '\\u00C5',\n            aring: '\\u00E5',\n            Ascr: '\\uD835\\uDC9C',\n            ascr: '\\uD835\\uDCB6',\n            Assign: '\\u2254',\n            ast: '\\u002A',\n            asymp: '\\u2248',\n            asympeq: '\\u224D',\n            Atilde: '\\u00C3',\n            atilde: '\\u00E3',\n            Auml: '\\u00C4',\n            auml: '\\u00E4',\n            awconint: '\\u2233',\n            awint: '\\u2A11',\n            backcong: '\\u224C',\n            backepsilon: '\\u03F6',\n            backprime: '\\u2035',\n            backsim: '\\u223D',\n            backsimeq: '\\u22CD',\n            Backslash: '\\u2216',\n            Barv: '\\u2AE7',\n            barvee: '\\u22BD',\n            Barwed: '\\u2306',\n            barwed: '\\u2305',\n            barwedge: '\\u2305',\n            bbrk: '\\u23B5',\n            bbrktbrk: '\\u23B6',\n            bcong: '\\u224C',\n            Bcy: '\\u0411',\n            bcy: '\\u0431',\n            bdquo: '\\u201E',\n            becaus: '\\u2235',\n            Because: '\\u2235',\n            because: '\\u2235',\n            bemptyv: '\\u29B0',\n            bepsi: '\\u03F6',\n            bernou: '\\u212C',\n            Bernoullis: '\\u212C',\n            Beta: '\\u0392',\n            beta: '\\u03B2',\n            beth: '\\u2136',\n            between: '\\u226C',\n            Bfr: '\\uD835\\uDD05',\n            bfr: '\\uD835\\uDD1F',\n            bigcap: '\\u22C2',\n            bigcirc: '\\u25EF',\n            bigcup: '\\u22C3',\n            bigodot: '\\u2A00',\n            bigoplus: '\\u2A01',\n            bigotimes: '\\u2A02',\n            bigsqcup: '\\u2A06',\n            bigstar: '\\u2605',\n            bigtriangledown: '\\u25BD',\n            bigtriangleup: '\\u25B3',\n            biguplus: '\\u2A04',\n            bigvee: '\\u22C1',\n            bigwedge: '\\u22C0',\n            bkarow: '\\u290D',\n            blacklozenge: '\\u29EB',\n            blacksquare: '\\u25AA',\n            blacktriangle: '\\u25B4',\n            blacktriangledown: '\\u25BE',\n            blacktriangleleft: '\\u25C2',\n            blacktriangleright: '\\u25B8',\n            blank: '\\u2423',\n            blk12: '\\u2592',\n            blk14: '\\u2591',\n            blk34: '\\u2593',\n            block: '\\u2588',\n            bne: '\\u003D\\u20E5',\n            bnequiv: '\\u2261\\u20E5',\n            bNot: '\\u2AED',\n            bnot: '\\u2310',\n            Bopf: '\\uD835\\uDD39',\n            bopf: '\\uD835\\uDD53',\n            bot: '\\u22A5',\n            bottom: '\\u22A5',\n            bowtie: '\\u22C8',\n            boxbox: '\\u29C9',\n            boxDL: '\\u2557',\n            boxDl: '\\u2556',\n            boxdL: '\\u2555',\n            boxdl: '\\u2510',\n            boxDR: '\\u2554',\n            boxDr: '\\u2553',\n            boxdR: '\\u2552',\n            boxdr: '\\u250C',\n            boxH: '\\u2550',\n            boxh: '\\u2500',\n            boxHD: '\\u2566',\n            boxHd: '\\u2564',\n            boxhD: '\\u2565',\n            boxhd: '\\u252C',\n            boxHU: '\\u2569',\n            boxHu: '\\u2567',\n            boxhU: '\\u2568',\n            boxhu: '\\u2534',\n            boxminus: '\\u229F',\n            boxplus: '\\u229E',\n            boxtimes: '\\u22A0',\n            boxUL: '\\u255D',\n            boxUl: '\\u255C',\n            boxuL: '\\u255B',\n            boxul: '\\u2518',\n            boxUR: '\\u255A',\n            boxUr: '\\u2559',\n            boxuR: '\\u2558',\n            boxur: '\\u2514',\n            boxV: '\\u2551',\n            boxv: '\\u2502',\n            boxVH: '\\u256C',\n            boxVh: '\\u256B',\n            boxvH: '\\u256A',\n            boxvh: '\\u253C',\n            boxVL: '\\u2563',\n            boxVl: '\\u2562',\n            boxvL: '\\u2561',\n            boxvl: '\\u2524',\n            boxVR: '\\u2560',\n            boxVr: '\\u255F',\n            boxvR: '\\u255E',\n            boxvr: '\\u251C',\n            bprime: '\\u2035',\n            Breve: '\\u02D8',\n            breve: '\\u02D8',\n            brvbar: '\\u00A6',\n            Bscr: '\\u212C',\n            bscr: '\\uD835\\uDCB7',\n            bsemi: '\\u204F',\n            bsim: '\\u223D',\n            bsime: '\\u22CD',\n            bsol: '\\u005C',\n            bsolb: '\\u29C5',\n            bsolhsub: '\\u27C8',\n            bull: '\\u2022',\n            bullet: '\\u2022',\n            bump: '\\u224E',\n            bumpE: '\\u2AAE',\n            bumpe: '\\u224F',\n            Bumpeq: '\\u224E',\n            bumpeq: '\\u224F',\n            Cacute: '\\u0106',\n            cacute: '\\u0107',\n            Cap: '\\u22D2',\n            cap: '\\u2229',\n            capand: '\\u2A44',\n            capbrcup: '\\u2A49',\n            capcap: '\\u2A4B',\n            capcup: '\\u2A47',\n            capdot: '\\u2A40',\n            CapitalDifferentialD: '\\u2145',\n            caps: '\\u2229\\uFE00',\n            caret: '\\u2041',\n            caron: '\\u02C7',\n            Cayleys: '\\u212D',\n            ccaps: '\\u2A4D',\n            Ccaron: '\\u010C',\n            ccaron: '\\u010D',\n            Ccedil: '\\u00C7',\n            ccedil: '\\u00E7',\n            Ccirc: '\\u0108',\n            ccirc: '\\u0109',\n            Cconint: '\\u2230',\n            ccups: '\\u2A4C',\n            ccupssm: '\\u2A50',\n            Cdot: '\\u010A',\n            cdot: '\\u010B',\n            cedil: '\\u00B8',\n            Cedilla: '\\u00B8',\n            cemptyv: '\\u29B2',\n            cent: '\\u00A2',\n            CenterDot: '\\u00B7',\n            centerdot: '\\u00B7',\n            Cfr: '\\u212D',\n            cfr: '\\uD835\\uDD20',\n            CHcy: '\\u0427',\n            chcy: '\\u0447',\n            check: '\\u2713',\n            checkmark: '\\u2713',\n            Chi: '\\u03A7',\n            chi: '\\u03C7',\n            cir: '\\u25CB',\n            circ: '\\u02C6',\n            circeq: '\\u2257',\n            circlearrowleft: '\\u21BA',\n            circlearrowright: '\\u21BB',\n            circledast: '\\u229B',\n            circledcirc: '\\u229A',\n            circleddash: '\\u229D',\n            CircleDot: '\\u2299',\n            circledR: '\\u00AE',\n            circledS: '\\u24C8',\n            CircleMinus: '\\u2296',\n            CirclePlus: '\\u2295',\n            CircleTimes: '\\u2297',\n            cirE: '\\u29C3',\n            cire: '\\u2257',\n            cirfnint: '\\u2A10',\n            cirmid: '\\u2AEF',\n            cirscir: '\\u29C2',\n            ClockwiseContourIntegral: '\\u2232',\n            CloseCurlyDoubleQuote: '\\u201D',\n            CloseCurlyQuote: '\\u2019',\n            clubs: '\\u2663',\n            clubsuit: '\\u2663',\n            Colon: '\\u2237',\n            colon: '\\u003A',\n            Colone: '\\u2A74',\n            colone: '\\u2254',\n            coloneq: '\\u2254',\n            comma: '\\u002C',\n            commat: '\\u0040',\n            comp: '\\u2201',\n            compfn: '\\u2218',\n            complement: '\\u2201',\n            complexes: '\\u2102',\n            cong: '\\u2245',\n            congdot: '\\u2A6D',\n            Congruent: '\\u2261',\n            Conint: '\\u222F',\n            conint: '\\u222E',\n            ContourIntegral: '\\u222E',\n            Copf: '\\u2102',\n            copf: '\\uD835\\uDD54',\n            coprod: '\\u2210',\n            Coproduct: '\\u2210',\n            COPY: '\\u00A9',\n            copy: '\\u00A9',\n            copysr: '\\u2117',\n            CounterClockwiseContourIntegral: '\\u2233',\n            crarr: '\\u21B5',\n            Cross: '\\u2A2F',\n            cross: '\\u2717',\n            Cscr: '\\uD835\\uDC9E',\n            cscr: '\\uD835\\uDCB8',\n            csub: '\\u2ACF',\n            csube: '\\u2AD1',\n            csup: '\\u2AD0',\n            csupe: '\\u2AD2',\n            ctdot: '\\u22EF',\n            cudarrl: '\\u2938',\n            cudarrr: '\\u2935',\n            cuepr: '\\u22DE',\n            cuesc: '\\u22DF',\n            cularr: '\\u21B6',\n            cularrp: '\\u293D',\n            Cup: '\\u22D3',\n            cup: '\\u222A',\n            cupbrcap: '\\u2A48',\n            CupCap: '\\u224D',\n            cupcap: '\\u2A46',\n            cupcup: '\\u2A4A',\n            cupdot: '\\u228D',\n            cupor: '\\u2A45',\n            cups: '\\u222A\\uFE00',\n            curarr: '\\u21B7',\n            curarrm: '\\u293C',\n            curlyeqprec: '\\u22DE',\n            curlyeqsucc: '\\u22DF',\n            curlyvee: '\\u22CE',\n            curlywedge: '\\u22CF',\n            curren: '\\u00A4',\n            curvearrowleft: '\\u21B6',\n            curvearrowright: '\\u21B7',\n            cuvee: '\\u22CE',\n            cuwed: '\\u22CF',\n            cwconint: '\\u2232',\n            cwint: '\\u2231',\n            cylcty: '\\u232D',\n            Dagger: '\\u2021',\n            dagger: '\\u2020',\n            daleth: '\\u2138',\n            Darr: '\\u21A1',\n            dArr: '\\u21D3',\n            darr: '\\u2193',\n            dash: '\\u2010',\n            Dashv: '\\u2AE4',\n            dashv: '\\u22A3',\n            dbkarow: '\\u290F',\n            dblac: '\\u02DD',\n            Dcaron: '\\u010E',\n            dcaron: '\\u010F',\n            Dcy: '\\u0414',\n            dcy: '\\u0434',\n            DD: '\\u2145',\n            dd: '\\u2146',\n            ddagger: '\\u2021',\n            ddarr: '\\u21CA',\n            DDotrahd: '\\u2911',\n            ddotseq: '\\u2A77',\n            deg: '\\u00B0',\n            Del: '\\u2207',\n            Delta: '\\u0394',\n            delta: '\\u03B4',\n            demptyv: '\\u29B1',\n            dfisht: '\\u297F',\n            Dfr: '\\uD835\\uDD07',\n            dfr: '\\uD835\\uDD21',\n            dHar: '\\u2965',\n            dharl: '\\u21C3',\n            dharr: '\\u21C2',\n            DiacriticalAcute: '\\u00B4',\n            DiacriticalDot: '\\u02D9',\n            DiacriticalDoubleAcute: '\\u02DD',\n            DiacriticalGrave: '\\u0060',\n            DiacriticalTilde: '\\u02DC',\n            diam: '\\u22C4',\n            Diamond: '\\u22C4',\n            diamond: '\\u22C4',\n            diamondsuit: '\\u2666',\n            diams: '\\u2666',\n            die: '\\u00A8',\n            DifferentialD: '\\u2146',\n            digamma: '\\u03DD',\n            disin: '\\u22F2',\n            div: '\\u00F7',\n            divide: '\\u00F7',\n            divideontimes: '\\u22C7',\n            divonx: '\\u22C7',\n            DJcy: '\\u0402',\n            djcy: '\\u0452',\n            dlcorn: '\\u231E',\n            dlcrop: '\\u230D',\n            dollar: '\\u0024',\n            Dopf: '\\uD835\\uDD3B',\n            dopf: '\\uD835\\uDD55',\n            Dot: '\\u00A8',\n            dot: '\\u02D9',\n            DotDot: '\\u20DC',\n            doteq: '\\u2250',\n            doteqdot: '\\u2251',\n            DotEqual: '\\u2250',\n            dotminus: '\\u2238',\n            dotplus: '\\u2214',\n            dotsquare: '\\u22A1',\n            doublebarwedge: '\\u2306',\n            DoubleContourIntegral: '\\u222F',\n            DoubleDot: '\\u00A8',\n            DoubleDownArrow: '\\u21D3',\n            DoubleLeftArrow: '\\u21D0',\n            DoubleLeftRightArrow: '\\u21D4',\n            DoubleLeftTee: '\\u2AE4',\n            DoubleLongLeftArrow: '\\u27F8',\n            DoubleLongLeftRightArrow: '\\u27FA',\n            DoubleLongRightArrow: '\\u27F9',\n            DoubleRightArrow: '\\u21D2',\n            DoubleRightTee: '\\u22A8',\n            DoubleUpArrow: '\\u21D1',\n            DoubleUpDownArrow: '\\u21D5',\n            DoubleVerticalBar: '\\u2225',\n            DownArrow: '\\u2193',\n            Downarrow: '\\u21D3',\n            downarrow: '\\u2193',\n            DownArrowBar: '\\u2913',\n            DownArrowUpArrow: '\\u21F5',\n            DownBreve: '\\u0311',\n            downdownarrows: '\\u21CA',\n            downharpoonleft: '\\u21C3',\n            downharpoonright: '\\u21C2',\n            DownLeftRightVector: '\\u2950',\n            DownLeftTeeVector: '\\u295E',\n            DownLeftVector: '\\u21BD',\n            DownLeftVectorBar: '\\u2956',\n            DownRightTeeVector: '\\u295F',\n            DownRightVector: '\\u21C1',\n            DownRightVectorBar: '\\u2957',\n            DownTee: '\\u22A4',\n            DownTeeArrow: '\\u21A7',\n            drbkarow: '\\u2910',\n            drcorn: '\\u231F',\n            drcrop: '\\u230C',\n            Dscr: '\\uD835\\uDC9F',\n            dscr: '\\uD835\\uDCB9',\n            DScy: '\\u0405',\n            dscy: '\\u0455',\n            dsol: '\\u29F6',\n            Dstrok: '\\u0110',\n            dstrok: '\\u0111',\n            dtdot: '\\u22F1',\n            dtri: '\\u25BF',\n            dtrif: '\\u25BE',\n            duarr: '\\u21F5',\n            duhar: '\\u296F',\n            dwangle: '\\u29A6',\n            DZcy: '\\u040F',\n            dzcy: '\\u045F',\n            dzigrarr: '\\u27FF',\n            Eacute: '\\u00C9',\n            eacute: '\\u00E9',\n            easter: '\\u2A6E',\n            Ecaron: '\\u011A',\n            ecaron: '\\u011B',\n            ecir: '\\u2256',\n            Ecirc: '\\u00CA',\n            ecirc: '\\u00EA',\n            ecolon: '\\u2255',\n            Ecy: '\\u042D',\n            ecy: '\\u044D',\n            eDDot: '\\u2A77',\n            Edot: '\\u0116',\n            eDot: '\\u2251',\n            edot: '\\u0117',\n            ee: '\\u2147',\n            efDot: '\\u2252',\n            Efr: '\\uD835\\uDD08',\n            efr: '\\uD835\\uDD22',\n            eg: '\\u2A9A',\n            Egrave: '\\u00C8',\n            egrave: '\\u00E8',\n            egs: '\\u2A96',\n            egsdot: '\\u2A98',\n            el: '\\u2A99',\n            Element: '\\u2208',\n            elinters: '\\u23E7',\n            ell: '\\u2113',\n            els: '\\u2A95',\n            elsdot: '\\u2A97',\n            Emacr: '\\u0112',\n            emacr: '\\u0113',\n            empty: '\\u2205',\n            emptyset: '\\u2205',\n            EmptySmallSquare: '\\u25FB',\n            emptyv: '\\u2205',\n            EmptyVerySmallSquare: '\\u25AB',\n            emsp: '\\u2003',\n            emsp13: '\\u2004',\n            emsp14: '\\u2005',\n            ENG: '\\u014A',\n            eng: '\\u014B',\n            ensp: '\\u2002',\n            Eogon: '\\u0118',\n            eogon: '\\u0119',\n            Eopf: '\\uD835\\uDD3C',\n            eopf: '\\uD835\\uDD56',\n            epar: '\\u22D5',\n            eparsl: '\\u29E3',\n            eplus: '\\u2A71',\n            epsi: '\\u03B5',\n            Epsilon: '\\u0395',\n            epsilon: '\\u03B5',\n            epsiv: '\\u03F5',\n            eqcirc: '\\u2256',\n            eqcolon: '\\u2255',\n            eqsim: '\\u2242',\n            eqslantgtr: '\\u2A96',\n            eqslantless: '\\u2A95',\n            Equal: '\\u2A75',\n            equals: '\\u003D',\n            EqualTilde: '\\u2242',\n            equest: '\\u225F',\n            Equilibrium: '\\u21CC',\n            equiv: '\\u2261',\n            equivDD: '\\u2A78',\n            eqvparsl: '\\u29E5',\n            erarr: '\\u2971',\n            erDot: '\\u2253',\n            Escr: '\\u2130',\n            escr: '\\u212F',\n            esdot: '\\u2250',\n            Esim: '\\u2A73',\n            esim: '\\u2242',\n            Eta: '\\u0397',\n            eta: '\\u03B7',\n            ETH: '\\u00D0',\n            eth: '\\u00F0',\n            Euml: '\\u00CB',\n            euml: '\\u00EB',\n            euro: '\\u20AC',\n            excl: '\\u0021',\n            exist: '\\u2203',\n            Exists: '\\u2203',\n            expectation: '\\u2130',\n            ExponentialE: '\\u2147',\n            exponentiale: '\\u2147',\n            fallingdotseq: '\\u2252',\n            Fcy: '\\u0424',\n            fcy: '\\u0444',\n            female: '\\u2640',\n            ffilig: '\\uFB03',\n            fflig: '\\uFB00',\n            ffllig: '\\uFB04',\n            Ffr: '\\uD835\\uDD09',\n            ffr: '\\uD835\\uDD23',\n            filig: '\\uFB01',\n            FilledSmallSquare: '\\u25FC',\n            FilledVerySmallSquare: '\\u25AA',\n            fjlig: '\\u0066\\u006A',\n            flat: '\\u266D',\n            fllig: '\\uFB02',\n            fltns: '\\u25B1',\n            fnof: '\\u0192',\n            Fopf: '\\uD835\\uDD3D',\n            fopf: '\\uD835\\uDD57',\n            ForAll: '\\u2200',\n            forall: '\\u2200',\n            fork: '\\u22D4',\n            forkv: '\\u2AD9',\n            Fouriertrf: '\\u2131',\n            fpartint: '\\u2A0D',\n            frac12: '\\u00BD',\n            frac13: '\\u2153',\n            frac14: '\\u00BC',\n            frac15: '\\u2155',\n            frac16: '\\u2159',\n            frac18: '\\u215B',\n            frac23: '\\u2154',\n            frac25: '\\u2156',\n            frac34: '\\u00BE',\n            frac35: '\\u2157',\n            frac38: '\\u215C',\n            frac45: '\\u2158',\n            frac56: '\\u215A',\n            frac58: '\\u215D',\n            frac78: '\\u215E',\n            frasl: '\\u2044',\n            frown: '\\u2322',\n            Fscr: '\\u2131',\n            fscr: '\\uD835\\uDCBB',\n            gacute: '\\u01F5',\n            Gamma: '\\u0393',\n            gamma: '\\u03B3',\n            Gammad: '\\u03DC',\n            gammad: '\\u03DD',\n            gap: '\\u2A86',\n            Gbreve: '\\u011E',\n            gbreve: '\\u011F',\n            Gcedil: '\\u0122',\n            Gcirc: '\\u011C',\n            gcirc: '\\u011D',\n            Gcy: '\\u0413',\n            gcy: '\\u0433',\n            Gdot: '\\u0120',\n            gdot: '\\u0121',\n            gE: '\\u2267',\n            ge: '\\u2265',\n            gEl: '\\u2A8C',\n            gel: '\\u22DB',\n            geq: '\\u2265',\n            geqq: '\\u2267',\n            geqslant: '\\u2A7E',\n            ges: '\\u2A7E',\n            gescc: '\\u2AA9',\n            gesdot: '\\u2A80',\n            gesdoto: '\\u2A82',\n            gesdotol: '\\u2A84',\n            gesl: '\\u22DB\\uFE00',\n            gesles: '\\u2A94',\n            Gfr: '\\uD835\\uDD0A',\n            gfr: '\\uD835\\uDD24',\n            Gg: '\\u22D9',\n            gg: '\\u226B',\n            ggg: '\\u22D9',\n            gimel: '\\u2137',\n            GJcy: '\\u0403',\n            gjcy: '\\u0453',\n            gl: '\\u2277',\n            gla: '\\u2AA5',\n            glE: '\\u2A92',\n            glj: '\\u2AA4',\n            gnap: '\\u2A8A',\n            gnapprox: '\\u2A8A',\n            gnE: '\\u2269',\n            gne: '\\u2A88',\n            gneq: '\\u2A88',\n            gneqq: '\\u2269',\n            gnsim: '\\u22E7',\n            Gopf: '\\uD835\\uDD3E',\n            gopf: '\\uD835\\uDD58',\n            grave: '\\u0060',\n            GreaterEqual: '\\u2265',\n            GreaterEqualLess: '\\u22DB',\n            GreaterFullEqual: '\\u2267',\n            GreaterGreater: '\\u2AA2',\n            GreaterLess: '\\u2277',\n            GreaterSlantEqual: '\\u2A7E',\n            GreaterTilde: '\\u2273',\n            Gscr: '\\uD835\\uDCA2',\n            gscr: '\\u210A',\n            gsim: '\\u2273',\n            gsime: '\\u2A8E',\n            gsiml: '\\u2A90',\n            Gt: '\\u226B',\n            GT: '\\u003E',\n            gt: '\\u003E',\n            gtcc: '\\u2AA7',\n            gtcir: '\\u2A7A',\n            gtdot: '\\u22D7',\n            gtlPar: '\\u2995',\n            gtquest: '\\u2A7C',\n            gtrapprox: '\\u2A86',\n            gtrarr: '\\u2978',\n            gtrdot: '\\u22D7',\n            gtreqless: '\\u22DB',\n            gtreqqless: '\\u2A8C',\n            gtrless: '\\u2277',\n            gtrsim: '\\u2273',\n            gvertneqq: '\\u2269\\uFE00',\n            gvnE: '\\u2269\\uFE00',\n            Hacek: '\\u02C7',\n            hairsp: '\\u200A',\n            half: '\\u00BD',\n            hamilt: '\\u210B',\n            HARDcy: '\\u042A',\n            hardcy: '\\u044A',\n            hArr: '\\u21D4',\n            harr: '\\u2194',\n            harrcir: '\\u2948',\n            harrw: '\\u21AD',\n            Hat: '\\u005E',\n            hbar: '\\u210F',\n            Hcirc: '\\u0124',\n            hcirc: '\\u0125',\n            hearts: '\\u2665',\n            heartsuit: '\\u2665',\n            hellip: '\\u2026',\n            hercon: '\\u22B9',\n            Hfr: '\\u210C',\n            hfr: '\\uD835\\uDD25',\n            HilbertSpace: '\\u210B',\n            hksearow: '\\u2925',\n            hkswarow: '\\u2926',\n            hoarr: '\\u21FF',\n            homtht: '\\u223B',\n            hookleftarrow: '\\u21A9',\n            hookrightarrow: '\\u21AA',\n            Hopf: '\\u210D',\n            hopf: '\\uD835\\uDD59',\n            horbar: '\\u2015',\n            HorizontalLine: '\\u2500',\n            Hscr: '\\u210B',\n            hscr: '\\uD835\\uDCBD',\n            hslash: '\\u210F',\n            Hstrok: '\\u0126',\n            hstrok: '\\u0127',\n            HumpDownHump: '\\u224E',\n            HumpEqual: '\\u224F',\n            hybull: '\\u2043',\n            hyphen: '\\u2010',\n            Iacute: '\\u00CD',\n            iacute: '\\u00ED',\n            ic: '\\u2063',\n            Icirc: '\\u00CE',\n            icirc: '\\u00EE',\n            Icy: '\\u0418',\n            icy: '\\u0438',\n            Idot: '\\u0130',\n            IEcy: '\\u0415',\n            iecy: '\\u0435',\n            iexcl: '\\u00A1',\n            iff: '\\u21D4',\n            Ifr: '\\u2111',\n            ifr: '\\uD835\\uDD26',\n            Igrave: '\\u00CC',\n            igrave: '\\u00EC',\n            ii: '\\u2148',\n            iiiint: '\\u2A0C',\n            iiint: '\\u222D',\n            iinfin: '\\u29DC',\n            iiota: '\\u2129',\n            IJlig: '\\u0132',\n            ijlig: '\\u0133',\n            Im: '\\u2111',\n            Imacr: '\\u012A',\n            imacr: '\\u012B',\n            image: '\\u2111',\n            ImaginaryI: '\\u2148',\n            imagline: '\\u2110',\n            imagpart: '\\u2111',\n            imath: '\\u0131',\n            imof: '\\u22B7',\n            imped: '\\u01B5',\n            Implies: '\\u21D2',\n            in: '\\u2208',\n            incare: '\\u2105',\n            infin: '\\u221E',\n            infintie: '\\u29DD',\n            inodot: '\\u0131',\n            Int: '\\u222C',\n            int: '\\u222B',\n            intcal: '\\u22BA',\n            integers: '\\u2124',\n            Integral: '\\u222B',\n            intercal: '\\u22BA',\n            Intersection: '\\u22C2',\n            intlarhk: '\\u2A17',\n            intprod: '\\u2A3C',\n            InvisibleComma: '\\u2063',\n            InvisibleTimes: '\\u2062',\n            IOcy: '\\u0401',\n            iocy: '\\u0451',\n            Iogon: '\\u012E',\n            iogon: '\\u012F',\n            Iopf: '\\uD835\\uDD40',\n            iopf: '\\uD835\\uDD5A',\n            Iota: '\\u0399',\n            iota: '\\u03B9',\n            iprod: '\\u2A3C',\n            iquest: '\\u00BF',\n            Iscr: '\\u2110',\n            iscr: '\\uD835\\uDCBE',\n            isin: '\\u2208',\n            isindot: '\\u22F5',\n            isinE: '\\u22F9',\n            isins: '\\u22F4',\n            isinsv: '\\u22F3',\n            isinv: '\\u2208',\n            it: '\\u2062',\n            Itilde: '\\u0128',\n            itilde: '\\u0129',\n            Iukcy: '\\u0406',\n            iukcy: '\\u0456',\n            Iuml: '\\u00CF',\n            iuml: '\\u00EF',\n            Jcirc: '\\u0134',\n            jcirc: '\\u0135',\n            Jcy: '\\u0419',\n            jcy: '\\u0439',\n            Jfr: '\\uD835\\uDD0D',\n            jfr: '\\uD835\\uDD27',\n            jmath: '\\u0237',\n            Jopf: '\\uD835\\uDD41',\n            jopf: '\\uD835\\uDD5B',\n            Jscr: '\\uD835\\uDCA5',\n            jscr: '\\uD835\\uDCBF',\n            Jsercy: '\\u0408',\n            jsercy: '\\u0458',\n            Jukcy: '\\u0404',\n            jukcy: '\\u0454',\n            Kappa: '\\u039A',\n            kappa: '\\u03BA',\n            kappav: '\\u03F0',\n            Kcedil: '\\u0136',\n            kcedil: '\\u0137',\n            Kcy: '\\u041A',\n            kcy: '\\u043A',\n            Kfr: '\\uD835\\uDD0E',\n            kfr: '\\uD835\\uDD28',\n            kgreen: '\\u0138',\n            KHcy: '\\u0425',\n            khcy: '\\u0445',\n            KJcy: '\\u040C',\n            kjcy: '\\u045C',\n            Kopf: '\\uD835\\uDD42',\n            kopf: '\\uD835\\uDD5C',\n            Kscr: '\\uD835\\uDCA6',\n            kscr: '\\uD835\\uDCC0',\n            lAarr: '\\u21DA',\n            Lacute: '\\u0139',\n            lacute: '\\u013A',\n            laemptyv: '\\u29B4',\n            lagran: '\\u2112',\n            Lambda: '\\u039B',\n            lambda: '\\u03BB',\n            Lang: '\\u27EA',\n            lang: '\\u27E8',\n            langd: '\\u2991',\n            langle: '\\u27E8',\n            lap: '\\u2A85',\n            Laplacetrf: '\\u2112',\n            laquo: '\\u00AB',\n            Larr: '\\u219E',\n            lArr: '\\u21D0',\n            larr: '\\u2190',\n            larrb: '\\u21E4',\n            larrbfs: '\\u291F',\n            larrfs: '\\u291D',\n            larrhk: '\\u21A9',\n            larrlp: '\\u21AB',\n            larrpl: '\\u2939',\n            larrsim: '\\u2973',\n            larrtl: '\\u21A2',\n            lat: '\\u2AAB',\n            lAtail: '\\u291B',\n            latail: '\\u2919',\n            late: '\\u2AAD',\n            lates: '\\u2AAD\\uFE00',\n            lBarr: '\\u290E',\n            lbarr: '\\u290C',\n            lbbrk: '\\u2772',\n            lbrace: '\\u007B',\n            lbrack: '\\u005B',\n            lbrke: '\\u298B',\n            lbrksld: '\\u298F',\n            lbrkslu: '\\u298D',\n            Lcaron: '\\u013D',\n            lcaron: '\\u013E',\n            Lcedil: '\\u013B',\n            lcedil: '\\u013C',\n            lceil: '\\u2308',\n            lcub: '\\u007B',\n            Lcy: '\\u041B',\n            lcy: '\\u043B',\n            ldca: '\\u2936',\n            ldquo: '\\u201C',\n            ldquor: '\\u201E',\n            ldrdhar: '\\u2967',\n            ldrushar: '\\u294B',\n            ldsh: '\\u21B2',\n            lE: '\\u2266',\n            le: '\\u2264',\n            LeftAngleBracket: '\\u27E8',\n            LeftArrow: '\\u2190',\n            Leftarrow: '\\u21D0',\n            leftarrow: '\\u2190',\n            LeftArrowBar: '\\u21E4',\n            LeftArrowRightArrow: '\\u21C6',\n            leftarrowtail: '\\u21A2',\n            LeftCeiling: '\\u2308',\n            LeftDoubleBracket: '\\u27E6',\n            LeftDownTeeVector: '\\u2961',\n            LeftDownVector: '\\u21C3',\n            LeftDownVectorBar: '\\u2959',\n            LeftFloor: '\\u230A',\n            leftharpoondown: '\\u21BD',\n            leftharpoonup: '\\u21BC',\n            leftleftarrows: '\\u21C7',\n            LeftRightArrow: '\\u2194',\n            Leftrightarrow: '\\u21D4',\n            leftrightarrow: '\\u2194',\n            leftrightarrows: '\\u21C6',\n            leftrightharpoons: '\\u21CB',\n            leftrightsquigarrow: '\\u21AD',\n            LeftRightVector: '\\u294E',\n            LeftTee: '\\u22A3',\n            LeftTeeArrow: '\\u21A4',\n            LeftTeeVector: '\\u295A',\n            leftthreetimes: '\\u22CB',\n            LeftTriangle: '\\u22B2',\n            LeftTriangleBar: '\\u29CF',\n            LeftTriangleEqual: '\\u22B4',\n            LeftUpDownVector: '\\u2951',\n            LeftUpTeeVector: '\\u2960',\n            LeftUpVector: '\\u21BF',\n            LeftUpVectorBar: '\\u2958',\n            LeftVector: '\\u21BC',\n            LeftVectorBar: '\\u2952',\n            lEg: '\\u2A8B',\n            leg: '\\u22DA',\n            leq: '\\u2264',\n            leqq: '\\u2266',\n            leqslant: '\\u2A7D',\n            les: '\\u2A7D',\n            lescc: '\\u2AA8',\n            lesdot: '\\u2A7F',\n            lesdoto: '\\u2A81',\n            lesdotor: '\\u2A83',\n            lesg: '\\u22DA\\uFE00',\n            lesges: '\\u2A93',\n            lessapprox: '\\u2A85',\n            lessdot: '\\u22D6',\n            lesseqgtr: '\\u22DA',\n            lesseqqgtr: '\\u2A8B',\n            LessEqualGreater: '\\u22DA',\n            LessFullEqual: '\\u2266',\n            LessGreater: '\\u2276',\n            lessgtr: '\\u2276',\n            LessLess: '\\u2AA1',\n            lesssim: '\\u2272',\n            LessSlantEqual: '\\u2A7D',\n            LessTilde: '\\u2272',\n            lfisht: '\\u297C',\n            lfloor: '\\u230A',\n            Lfr: '\\uD835\\uDD0F',\n            lfr: '\\uD835\\uDD29',\n            lg: '\\u2276',\n            lgE: '\\u2A91',\n            lHar: '\\u2962',\n            lhard: '\\u21BD',\n            lharu: '\\u21BC',\n            lharul: '\\u296A',\n            lhblk: '\\u2584',\n            LJcy: '\\u0409',\n            ljcy: '\\u0459',\n            Ll: '\\u22D8',\n            ll: '\\u226A',\n            llarr: '\\u21C7',\n            llcorner: '\\u231E',\n            Lleftarrow: '\\u21DA',\n            llhard: '\\u296B',\n            lltri: '\\u25FA',\n            Lmidot: '\\u013F',\n            lmidot: '\\u0140',\n            lmoust: '\\u23B0',\n            lmoustache: '\\u23B0',\n            lnap: '\\u2A89',\n            lnapprox: '\\u2A89',\n            lnE: '\\u2268',\n            lne: '\\u2A87',\n            lneq: '\\u2A87',\n            lneqq: '\\u2268',\n            lnsim: '\\u22E6',\n            loang: '\\u27EC',\n            loarr: '\\u21FD',\n            lobrk: '\\u27E6',\n            LongLeftArrow: '\\u27F5',\n            Longleftarrow: '\\u27F8',\n            longleftarrow: '\\u27F5',\n            LongLeftRightArrow: '\\u27F7',\n            Longleftrightarrow: '\\u27FA',\n            longleftrightarrow: '\\u27F7',\n            longmapsto: '\\u27FC',\n            LongRightArrow: '\\u27F6',\n            Longrightarrow: '\\u27F9',\n            longrightarrow: '\\u27F6',\n            looparrowleft: '\\u21AB',\n            looparrowright: '\\u21AC',\n            lopar: '\\u2985',\n            Lopf: '\\uD835\\uDD43',\n            lopf: '\\uD835\\uDD5D',\n            loplus: '\\u2A2D',\n            lotimes: '\\u2A34',\n            lowast: '\\u2217',\n            lowbar: '\\u005F',\n            LowerLeftArrow: '\\u2199',\n            LowerRightArrow: '\\u2198',\n            loz: '\\u25CA',\n            lozenge: '\\u25CA',\n            lozf: '\\u29EB',\n            lpar: '\\u0028',\n            lparlt: '\\u2993',\n            lrarr: '\\u21C6',\n            lrcorner: '\\u231F',\n            lrhar: '\\u21CB',\n            lrhard: '\\u296D',\n            lrm: '\\u200E',\n            lrtri: '\\u22BF',\n            lsaquo: '\\u2039',\n            Lscr: '\\u2112',\n            lscr: '\\uD835\\uDCC1',\n            Lsh: '\\u21B0',\n            lsh: '\\u21B0',\n            lsim: '\\u2272',\n            lsime: '\\u2A8D',\n            lsimg: '\\u2A8F',\n            lsqb: '\\u005B',\n            lsquo: '\\u2018',\n            lsquor: '\\u201A',\n            Lstrok: '\\u0141',\n            lstrok: '\\u0142',\n            Lt: '\\u226A',\n            LT: '\\u003C',\n            lt: '\\u003C',\n            ltcc: '\\u2AA6',\n            ltcir: '\\u2A79',\n            ltdot: '\\u22D6',\n            lthree: '\\u22CB',\n            ltimes: '\\u22C9',\n            ltlarr: '\\u2976',\n            ltquest: '\\u2A7B',\n            ltri: '\\u25C3',\n            ltrie: '\\u22B4',\n            ltrif: '\\u25C2',\n            ltrPar: '\\u2996',\n            lurdshar: '\\u294A',\n            luruhar: '\\u2966',\n            lvertneqq: '\\u2268\\uFE00',\n            lvnE: '\\u2268\\uFE00',\n            macr: '\\u00AF',\n            male: '\\u2642',\n            malt: '\\u2720',\n            maltese: '\\u2720',\n            Map: '\\u2905',\n            map: '\\u21A6',\n            mapsto: '\\u21A6',\n            mapstodown: '\\u21A7',\n            mapstoleft: '\\u21A4',\n            mapstoup: '\\u21A5',\n            marker: '\\u25AE',\n            mcomma: '\\u2A29',\n            Mcy: '\\u041C',\n            mcy: '\\u043C',\n            mdash: '\\u2014',\n            mDDot: '\\u223A',\n            measuredangle: '\\u2221',\n            MediumSpace: '\\u205F',\n            Mellintrf: '\\u2133',\n            Mfr: '\\uD835\\uDD10',\n            mfr: '\\uD835\\uDD2A',\n            mho: '\\u2127',\n            micro: '\\u00B5',\n            mid: '\\u2223',\n            midast: '\\u002A',\n            midcir: '\\u2AF0',\n            middot: '\\u00B7',\n            minus: '\\u2212',\n            minusb: '\\u229F',\n            minusd: '\\u2238',\n            minusdu: '\\u2A2A',\n            MinusPlus: '\\u2213',\n            mlcp: '\\u2ADB',\n            mldr: '\\u2026',\n            mnplus: '\\u2213',\n            models: '\\u22A7',\n            Mopf: '\\uD835\\uDD44',\n            mopf: '\\uD835\\uDD5E',\n            mp: '\\u2213',\n            Mscr: '\\u2133',\n            mscr: '\\uD835\\uDCC2',\n            mstpos: '\\u223E',\n            Mu: '\\u039C',\n            mu: '\\u03BC',\n            multimap: '\\u22B8',\n            mumap: '\\u22B8',\n            nabla: '\\u2207',\n            Nacute: '\\u0143',\n            nacute: '\\u0144',\n            nang: '\\u2220\\u20D2',\n            nap: '\\u2249',\n            napE: '\\u2A70\\u0338',\n            napid: '\\u224B\\u0338',\n            napos: '\\u0149',\n            napprox: '\\u2249',\n            natur: '\\u266E',\n            natural: '\\u266E',\n            naturals: '\\u2115',\n            nbsp: '\\u00A0',\n            nbump: '\\u224E\\u0338',\n            nbumpe: '\\u224F\\u0338',\n            ncap: '\\u2A43',\n            Ncaron: '\\u0147',\n            ncaron: '\\u0148',\n            Ncedil: '\\u0145',\n            ncedil: '\\u0146',\n            ncong: '\\u2247',\n            ncongdot: '\\u2A6D\\u0338',\n            ncup: '\\u2A42',\n            Ncy: '\\u041D',\n            ncy: '\\u043D',\n            ndash: '\\u2013',\n            ne: '\\u2260',\n            nearhk: '\\u2924',\n            neArr: '\\u21D7',\n            nearr: '\\u2197',\n            nearrow: '\\u2197',\n            nedot: '\\u2250\\u0338',\n            NegativeMediumSpace: '\\u200B',\n            NegativeThickSpace: '\\u200B',\n            NegativeThinSpace: '\\u200B',\n            NegativeVeryThinSpace: '\\u200B',\n            nequiv: '\\u2262',\n            nesear: '\\u2928',\n            nesim: '\\u2242\\u0338',\n            NestedGreaterGreater: '\\u226B',\n            NestedLessLess: '\\u226A',\n            NewLine: '\\u000A',\n            nexist: '\\u2204',\n            nexists: '\\u2204',\n            Nfr: '\\uD835\\uDD11',\n            nfr: '\\uD835\\uDD2B',\n            ngE: '\\u2267\\u0338',\n            nge: '\\u2271',\n            ngeq: '\\u2271',\n            ngeqq: '\\u2267\\u0338',\n            ngeqslant: '\\u2A7E\\u0338',\n            nges: '\\u2A7E\\u0338',\n            nGg: '\\u22D9\\u0338',\n            ngsim: '\\u2275',\n            nGt: '\\u226B\\u20D2',\n            ngt: '\\u226F',\n            ngtr: '\\u226F',\n            nGtv: '\\u226B\\u0338',\n            nhArr: '\\u21CE',\n            nharr: '\\u21AE',\n            nhpar: '\\u2AF2',\n            ni: '\\u220B',\n            nis: '\\u22FC',\n            nisd: '\\u22FA',\n            niv: '\\u220B',\n            NJcy: '\\u040A',\n            njcy: '\\u045A',\n            nlArr: '\\u21CD',\n            nlarr: '\\u219A',\n            nldr: '\\u2025',\n            nlE: '\\u2266\\u0338',\n            nle: '\\u2270',\n            nLeftarrow: '\\u21CD',\n            nleftarrow: '\\u219A',\n            nLeftrightarrow: '\\u21CE',\n            nleftrightarrow: '\\u21AE',\n            nleq: '\\u2270',\n            nleqq: '\\u2266\\u0338',\n            nleqslant: '\\u2A7D\\u0338',\n            nles: '\\u2A7D\\u0338',\n            nless: '\\u226E',\n            nLl: '\\u22D8\\u0338',\n            nlsim: '\\u2274',\n            nLt: '\\u226A\\u20D2',\n            nlt: '\\u226E',\n            nltri: '\\u22EA',\n            nltrie: '\\u22EC',\n            nLtv: '\\u226A\\u0338',\n            nmid: '\\u2224',\n            NoBreak: '\\u2060',\n            NonBreakingSpace: '\\u00A0',\n            Nopf: '\\u2115',\n            nopf: '\\uD835\\uDD5F',\n            Not: '\\u2AEC',\n            not: '\\u00AC',\n            NotCongruent: '\\u2262',\n            NotCupCap: '\\u226D',\n            NotDoubleVerticalBar: '\\u2226',\n            NotElement: '\\u2209',\n            NotEqual: '\\u2260',\n            NotEqualTilde: '\\u2242\\u0338',\n            NotExists: '\\u2204',\n            NotGreater: '\\u226F',\n            NotGreaterEqual: '\\u2271',\n            NotGreaterFullEqual: '\\u2267\\u0338',\n            NotGreaterGreater: '\\u226B\\u0338',\n            NotGreaterLess: '\\u2279',\n            NotGreaterSlantEqual: '\\u2A7E\\u0338',\n            NotGreaterTilde: '\\u2275',\n            NotHumpDownHump: '\\u224E\\u0338',\n            NotHumpEqual: '\\u224F\\u0338',\n            notin: '\\u2209',\n            notindot: '\\u22F5\\u0338',\n            notinE: '\\u22F9\\u0338',\n            notinva: '\\u2209',\n            notinvb: '\\u22F7',\n            notinvc: '\\u22F6',\n            NotLeftTriangle: '\\u22EA',\n            NotLeftTriangleBar: '\\u29CF\\u0338',\n            NotLeftTriangleEqual: '\\u22EC',\n            NotLess: '\\u226E',\n            NotLessEqual: '\\u2270',\n            NotLessGreater: '\\u2278',\n            NotLessLess: '\\u226A\\u0338',\n            NotLessSlantEqual: '\\u2A7D\\u0338',\n            NotLessTilde: '\\u2274',\n            NotNestedGreaterGreater: '\\u2AA2\\u0338',\n            NotNestedLessLess: '\\u2AA1\\u0338',\n            notni: '\\u220C',\n            notniva: '\\u220C',\n            notnivb: '\\u22FE',\n            notnivc: '\\u22FD',\n            NotPrecedes: '\\u2280',\n            NotPrecedesEqual: '\\u2AAF\\u0338',\n            NotPrecedesSlantEqual: '\\u22E0',\n            NotReverseElement: '\\u220C',\n            NotRightTriangle: '\\u22EB',\n            NotRightTriangleBar: '\\u29D0\\u0338',\n            NotRightTriangleEqual: '\\u22ED',\n            NotSquareSubset: '\\u228F\\u0338',\n            NotSquareSubsetEqual: '\\u22E2',\n            NotSquareSuperset: '\\u2290\\u0338',\n            NotSquareSupersetEqual: '\\u22E3',\n            NotSubset: '\\u2282\\u20D2',\n            NotSubsetEqual: '\\u2288',\n            NotSucceeds: '\\u2281',\n            NotSucceedsEqual: '\\u2AB0\\u0338',\n            NotSucceedsSlantEqual: '\\u22E1',\n            NotSucceedsTilde: '\\u227F\\u0338',\n            NotSuperset: '\\u2283\\u20D2',\n            NotSupersetEqual: '\\u2289',\n            NotTilde: '\\u2241',\n            NotTildeEqual: '\\u2244',\n            NotTildeFullEqual: '\\u2247',\n            NotTildeTilde: '\\u2249',\n            NotVerticalBar: '\\u2224',\n            npar: '\\u2226',\n            nparallel: '\\u2226',\n            nparsl: '\\u2AFD\\u20E5',\n            npart: '\\u2202\\u0338',\n            npolint: '\\u2A14',\n            npr: '\\u2280',\n            nprcue: '\\u22E0',\n            npre: '\\u2AAF\\u0338',\n            nprec: '\\u2280',\n            npreceq: '\\u2AAF\\u0338',\n            nrArr: '\\u21CF',\n            nrarr: '\\u219B',\n            nrarrc: '\\u2933\\u0338',\n            nrarrw: '\\u219D\\u0338',\n            nRightarrow: '\\u21CF',\n            nrightarrow: '\\u219B',\n            nrtri: '\\u22EB',\n            nrtrie: '\\u22ED',\n            nsc: '\\u2281',\n            nsccue: '\\u22E1',\n            nsce: '\\u2AB0\\u0338',\n            Nscr: '\\uD835\\uDCA9',\n            nscr: '\\uD835\\uDCC3',\n            nshortmid: '\\u2224',\n            nshortparallel: '\\u2226',\n            nsim: '\\u2241',\n            nsime: '\\u2244',\n            nsimeq: '\\u2244',\n            nsmid: '\\u2224',\n            nspar: '\\u2226',\n            nsqsube: '\\u22E2',\n            nsqsupe: '\\u22E3',\n            nsub: '\\u2284',\n            nsubE: '\\u2AC5\\u0338',\n            nsube: '\\u2288',\n            nsubset: '\\u2282\\u20D2',\n            nsubseteq: '\\u2288',\n            nsubseteqq: '\\u2AC5\\u0338',\n            nsucc: '\\u2281',\n            nsucceq: '\\u2AB0\\u0338',\n            nsup: '\\u2285',\n            nsupE: '\\u2AC6\\u0338',\n            nsupe: '\\u2289',\n            nsupset: '\\u2283\\u20D2',\n            nsupseteq: '\\u2289',\n            nsupseteqq: '\\u2AC6\\u0338',\n            ntgl: '\\u2279',\n            Ntilde: '\\u00D1',\n            ntilde: '\\u00F1',\n            ntlg: '\\u2278',\n            ntriangleleft: '\\u22EA',\n            ntrianglelefteq: '\\u22EC',\n            ntriangleright: '\\u22EB',\n            ntrianglerighteq: '\\u22ED',\n            Nu: '\\u039D',\n            nu: '\\u03BD',\n            num: '\\u0023',\n            numero: '\\u2116',\n            numsp: '\\u2007',\n            nvap: '\\u224D\\u20D2',\n            nVDash: '\\u22AF',\n            nVdash: '\\u22AE',\n            nvDash: '\\u22AD',\n            nvdash: '\\u22AC',\n            nvge: '\\u2265\\u20D2',\n            nvgt: '\\u003E\\u20D2',\n            nvHarr: '\\u2904',\n            nvinfin: '\\u29DE',\n            nvlArr: '\\u2902',\n            nvle: '\\u2264\\u20D2',\n            nvlt: '\\u003C\\u20D2',\n            nvltrie: '\\u22B4\\u20D2',\n            nvrArr: '\\u2903',\n            nvrtrie: '\\u22B5\\u20D2',\n            nvsim: '\\u223C\\u20D2',\n            nwarhk: '\\u2923',\n            nwArr: '\\u21D6',\n            nwarr: '\\u2196',\n            nwarrow: '\\u2196',\n            nwnear: '\\u2927',\n            Oacute: '\\u00D3',\n            oacute: '\\u00F3',\n            oast: '\\u229B',\n            ocir: '\\u229A',\n            Ocirc: '\\u00D4',\n            ocirc: '\\u00F4',\n            Ocy: '\\u041E',\n            ocy: '\\u043E',\n            odash: '\\u229D',\n            Odblac: '\\u0150',\n            odblac: '\\u0151',\n            odiv: '\\u2A38',\n            odot: '\\u2299',\n            odsold: '\\u29BC',\n            OElig: '\\u0152',\n            oelig: '\\u0153',\n            ofcir: '\\u29BF',\n            Ofr: '\\uD835\\uDD12',\n            ofr: '\\uD835\\uDD2C',\n            ogon: '\\u02DB',\n            Ograve: '\\u00D2',\n            ograve: '\\u00F2',\n            ogt: '\\u29C1',\n            ohbar: '\\u29B5',\n            ohm: '\\u03A9',\n            oint: '\\u222E',\n            olarr: '\\u21BA',\n            olcir: '\\u29BE',\n            olcross: '\\u29BB',\n            oline: '\\u203E',\n            olt: '\\u29C0',\n            Omacr: '\\u014C',\n            omacr: '\\u014D',\n            Omega: '\\u03A9',\n            omega: '\\u03C9',\n            Omicron: '\\u039F',\n            omicron: '\\u03BF',\n            omid: '\\u29B6',\n            ominus: '\\u2296',\n            Oopf: '\\uD835\\uDD46',\n            oopf: '\\uD835\\uDD60',\n            opar: '\\u29B7',\n            OpenCurlyDoubleQuote: '\\u201C',\n            OpenCurlyQuote: '\\u2018',\n            operp: '\\u29B9',\n            oplus: '\\u2295',\n            Or: '\\u2A54',\n            or: '\\u2228',\n            orarr: '\\u21BB',\n            ord: '\\u2A5D',\n            order: '\\u2134',\n            orderof: '\\u2134',\n            ordf: '\\u00AA',\n            ordm: '\\u00BA',\n            origof: '\\u22B6',\n            oror: '\\u2A56',\n            orslope: '\\u2A57',\n            orv: '\\u2A5B',\n            oS: '\\u24C8',\n            Oscr: '\\uD835\\uDCAA',\n            oscr: '\\u2134',\n            Oslash: '\\u00D8',\n            oslash: '\\u00F8',\n            osol: '\\u2298',\n            Otilde: '\\u00D5',\n            otilde: '\\u00F5',\n            Otimes: '\\u2A37',\n            otimes: '\\u2297',\n            otimesas: '\\u2A36',\n            Ouml: '\\u00D6',\n            ouml: '\\u00F6',\n            ovbar: '\\u233D',\n            OverBar: '\\u203E',\n            OverBrace: '\\u23DE',\n            OverBracket: '\\u23B4',\n            OverParenthesis: '\\u23DC',\n            par: '\\u2225',\n            para: '\\u00B6',\n            parallel: '\\u2225',\n            parsim: '\\u2AF3',\n            parsl: '\\u2AFD',\n            part: '\\u2202',\n            PartialD: '\\u2202',\n            Pcy: '\\u041F',\n            pcy: '\\u043F',\n            percnt: '\\u0025',\n            period: '\\u002E',\n            permil: '\\u2030',\n            perp: '\\u22A5',\n            pertenk: '\\u2031',\n            Pfr: '\\uD835\\uDD13',\n            pfr: '\\uD835\\uDD2D',\n            Phi: '\\u03A6',\n            phi: '\\u03C6',\n            phiv: '\\u03D5',\n            phmmat: '\\u2133',\n            phone: '\\u260E',\n            Pi: '\\u03A0',\n            pi: '\\u03C0',\n            pitchfork: '\\u22D4',\n            piv: '\\u03D6',\n            planck: '\\u210F',\n            planckh: '\\u210E',\n            plankv: '\\u210F',\n            plus: '\\u002B',\n            plusacir: '\\u2A23',\n            plusb: '\\u229E',\n            pluscir: '\\u2A22',\n            plusdo: '\\u2214',\n            plusdu: '\\u2A25',\n            pluse: '\\u2A72',\n            PlusMinus: '\\u00B1',\n            plusmn: '\\u00B1',\n            plussim: '\\u2A26',\n            plustwo: '\\u2A27',\n            pm: '\\u00B1',\n            Poincareplane: '\\u210C',\n            pointint: '\\u2A15',\n            Popf: '\\u2119',\n            popf: '\\uD835\\uDD61',\n            pound: '\\u00A3',\n            Pr: '\\u2ABB',\n            pr: '\\u227A',\n            prap: '\\u2AB7',\n            prcue: '\\u227C',\n            prE: '\\u2AB3',\n            pre: '\\u2AAF',\n            prec: '\\u227A',\n            precapprox: '\\u2AB7',\n            preccurlyeq: '\\u227C',\n            Precedes: '\\u227A',\n            PrecedesEqual: '\\u2AAF',\n            PrecedesSlantEqual: '\\u227C',\n            PrecedesTilde: '\\u227E',\n            preceq: '\\u2AAF',\n            precnapprox: '\\u2AB9',\n            precneqq: '\\u2AB5',\n            precnsim: '\\u22E8',\n            precsim: '\\u227E',\n            Prime: '\\u2033',\n            prime: '\\u2032',\n            primes: '\\u2119',\n            prnap: '\\u2AB9',\n            prnE: '\\u2AB5',\n            prnsim: '\\u22E8',\n            prod: '\\u220F',\n            Product: '\\u220F',\n            profalar: '\\u232E',\n            profline: '\\u2312',\n            profsurf: '\\u2313',\n            prop: '\\u221D',\n            Proportion: '\\u2237',\n            Proportional: '\\u221D',\n            propto: '\\u221D',\n            prsim: '\\u227E',\n            prurel: '\\u22B0',\n            Pscr: '\\uD835\\uDCAB',\n            pscr: '\\uD835\\uDCC5',\n            Psi: '\\u03A8',\n            psi: '\\u03C8',\n            puncsp: '\\u2008',\n            Qfr: '\\uD835\\uDD14',\n            qfr: '\\uD835\\uDD2E',\n            qint: '\\u2A0C',\n            Qopf: '\\u211A',\n            qopf: '\\uD835\\uDD62',\n            qprime: '\\u2057',\n            Qscr: '\\uD835\\uDCAC',\n            qscr: '\\uD835\\uDCC6',\n            quaternions: '\\u210D',\n            quatint: '\\u2A16',\n            quest: '\\u003F',\n            questeq: '\\u225F',\n            QUOT: '\\u0022',\n            quot: '\\u0022',\n            rAarr: '\\u21DB',\n            race: '\\u223D\\u0331',\n            Racute: '\\u0154',\n            racute: '\\u0155',\n            radic: '\\u221A',\n            raemptyv: '\\u29B3',\n            Rang: '\\u27EB',\n            rang: '\\u27E9',\n            rangd: '\\u2992',\n            range: '\\u29A5',\n            rangle: '\\u27E9',\n            raquo: '\\u00BB',\n            Rarr: '\\u21A0',\n            rArr: '\\u21D2',\n            rarr: '\\u2192',\n            rarrap: '\\u2975',\n            rarrb: '\\u21E5',\n            rarrbfs: '\\u2920',\n            rarrc: '\\u2933',\n            rarrfs: '\\u291E',\n            rarrhk: '\\u21AA',\n            rarrlp: '\\u21AC',\n            rarrpl: '\\u2945',\n            rarrsim: '\\u2974',\n            Rarrtl: '\\u2916',\n            rarrtl: '\\u21A3',\n            rarrw: '\\u219D',\n            rAtail: '\\u291C',\n            ratail: '\\u291A',\n            ratio: '\\u2236',\n            rationals: '\\u211A',\n            RBarr: '\\u2910',\n            rBarr: '\\u290F',\n            rbarr: '\\u290D',\n            rbbrk: '\\u2773',\n            rbrace: '\\u007D',\n            rbrack: '\\u005D',\n            rbrke: '\\u298C',\n            rbrksld: '\\u298E',\n            rbrkslu: '\\u2990',\n            Rcaron: '\\u0158',\n            rcaron: '\\u0159',\n            Rcedil: '\\u0156',\n            rcedil: '\\u0157',\n            rceil: '\\u2309',\n            rcub: '\\u007D',\n            Rcy: '\\u0420',\n            rcy: '\\u0440',\n            rdca: '\\u2937',\n            rdldhar: '\\u2969',\n            rdquo: '\\u201D',\n            rdquor: '\\u201D',\n            rdsh: '\\u21B3',\n            Re: '\\u211C',\n            real: '\\u211C',\n            realine: '\\u211B',\n            realpart: '\\u211C',\n            reals: '\\u211D',\n            rect: '\\u25AD',\n            REG: '\\u00AE',\n            reg: '\\u00AE',\n            ReverseElement: '\\u220B',\n            ReverseEquilibrium: '\\u21CB',\n            ReverseUpEquilibrium: '\\u296F',\n            rfisht: '\\u297D',\n            rfloor: '\\u230B',\n            Rfr: '\\u211C',\n            rfr: '\\uD835\\uDD2F',\n            rHar: '\\u2964',\n            rhard: '\\u21C1',\n            rharu: '\\u21C0',\n            rharul: '\\u296C',\n            Rho: '\\u03A1',\n            rho: '\\u03C1',\n            rhov: '\\u03F1',\n            RightAngleBracket: '\\u27E9',\n            RightArrow: '\\u2192',\n            Rightarrow: '\\u21D2',\n            rightarrow: '\\u2192',\n            RightArrowBar: '\\u21E5',\n            RightArrowLeftArrow: '\\u21C4',\n            rightarrowtail: '\\u21A3',\n            RightCeiling: '\\u2309',\n            RightDoubleBracket: '\\u27E7',\n            RightDownTeeVector: '\\u295D',\n            RightDownVector: '\\u21C2',\n            RightDownVectorBar: '\\u2955',\n            RightFloor: '\\u230B',\n            rightharpoondown: '\\u21C1',\n            rightharpoonup: '\\u21C0',\n            rightleftarrows: '\\u21C4',\n            rightleftharpoons: '\\u21CC',\n            rightrightarrows: '\\u21C9',\n            rightsquigarrow: '\\u219D',\n            RightTee: '\\u22A2',\n            RightTeeArrow: '\\u21A6',\n            RightTeeVector: '\\u295B',\n            rightthreetimes: '\\u22CC',\n            RightTriangle: '\\u22B3',\n            RightTriangleBar: '\\u29D0',\n            RightTriangleEqual: '\\u22B5',\n            RightUpDownVector: '\\u294F',\n            RightUpTeeVector: '\\u295C',\n            RightUpVector: '\\u21BE',\n            RightUpVectorBar: '\\u2954',\n            RightVector: '\\u21C0',\n            RightVectorBar: '\\u2953',\n            ring: '\\u02DA',\n            risingdotseq: '\\u2253',\n            rlarr: '\\u21C4',\n            rlhar: '\\u21CC',\n            rlm: '\\u200F',\n            rmoust: '\\u23B1',\n            rmoustache: '\\u23B1',\n            rnmid: '\\u2AEE',\n            roang: '\\u27ED',\n            roarr: '\\u21FE',\n            robrk: '\\u27E7',\n            ropar: '\\u2986',\n            Ropf: '\\u211D',\n            ropf: '\\uD835\\uDD63',\n            roplus: '\\u2A2E',\n            rotimes: '\\u2A35',\n            RoundImplies: '\\u2970',\n            rpar: '\\u0029',\n            rpargt: '\\u2994',\n            rppolint: '\\u2A12',\n            rrarr: '\\u21C9',\n            Rrightarrow: '\\u21DB',\n            rsaquo: '\\u203A',\n            Rscr: '\\u211B',\n            rscr: '\\uD835\\uDCC7',\n            Rsh: '\\u21B1',\n            rsh: '\\u21B1',\n            rsqb: '\\u005D',\n            rsquo: '\\u2019',\n            rsquor: '\\u2019',\n            rthree: '\\u22CC',\n            rtimes: '\\u22CA',\n            rtri: '\\u25B9',\n            rtrie: '\\u22B5',\n            rtrif: '\\u25B8',\n            rtriltri: '\\u29CE',\n            RuleDelayed: '\\u29F4',\n            ruluhar: '\\u2968',\n            rx: '\\u211E',\n            Sacute: '\\u015A',\n            sacute: '\\u015B',\n            sbquo: '\\u201A',\n            Sc: '\\u2ABC',\n            sc: '\\u227B',\n            scap: '\\u2AB8',\n            Scaron: '\\u0160',\n            scaron: '\\u0161',\n            sccue: '\\u227D',\n            scE: '\\u2AB4',\n            sce: '\\u2AB0',\n            Scedil: '\\u015E',\n            scedil: '\\u015F',\n            Scirc: '\\u015C',\n            scirc: '\\u015D',\n            scnap: '\\u2ABA',\n            scnE: '\\u2AB6',\n            scnsim: '\\u22E9',\n            scpolint: '\\u2A13',\n            scsim: '\\u227F',\n            Scy: '\\u0421',\n            scy: '\\u0441',\n            sdot: '\\u22C5',\n            sdotb: '\\u22A1',\n            sdote: '\\u2A66',\n            searhk: '\\u2925',\n            seArr: '\\u21D8',\n            searr: '\\u2198',\n            searrow: '\\u2198',\n            sect: '\\u00A7',\n            semi: '\\u003B',\n            seswar: '\\u2929',\n            setminus: '\\u2216',\n            setmn: '\\u2216',\n            sext: '\\u2736',\n            Sfr: '\\uD835\\uDD16',\n            sfr: '\\uD835\\uDD30',\n            sfrown: '\\u2322',\n            sharp: '\\u266F',\n            SHCHcy: '\\u0429',\n            shchcy: '\\u0449',\n            SHcy: '\\u0428',\n            shcy: '\\u0448',\n            ShortDownArrow: '\\u2193',\n            ShortLeftArrow: '\\u2190',\n            shortmid: '\\u2223',\n            shortparallel: '\\u2225',\n            ShortRightArrow: '\\u2192',\n            ShortUpArrow: '\\u2191',\n            shy: '\\u00AD',\n            Sigma: '\\u03A3',\n            sigma: '\\u03C3',\n            sigmaf: '\\u03C2',\n            sigmav: '\\u03C2',\n            sim: '\\u223C',\n            simdot: '\\u2A6A',\n            sime: '\\u2243',\n            simeq: '\\u2243',\n            simg: '\\u2A9E',\n            simgE: '\\u2AA0',\n            siml: '\\u2A9D',\n            simlE: '\\u2A9F',\n            simne: '\\u2246',\n            simplus: '\\u2A24',\n            simrarr: '\\u2972',\n            slarr: '\\u2190',\n            SmallCircle: '\\u2218',\n            smallsetminus: '\\u2216',\n            smashp: '\\u2A33',\n            smeparsl: '\\u29E4',\n            smid: '\\u2223',\n            smile: '\\u2323',\n            smt: '\\u2AAA',\n            smte: '\\u2AAC',\n            smtes: '\\u2AAC\\uFE00',\n            SOFTcy: '\\u042C',\n            softcy: '\\u044C',\n            sol: '\\u002F',\n            solb: '\\u29C4',\n            solbar: '\\u233F',\n            Sopf: '\\uD835\\uDD4A',\n            sopf: '\\uD835\\uDD64',\n            spades: '\\u2660',\n            spadesuit: '\\u2660',\n            spar: '\\u2225',\n            sqcap: '\\u2293',\n            sqcaps: '\\u2293\\uFE00',\n            sqcup: '\\u2294',\n            sqcups: '\\u2294\\uFE00',\n            Sqrt: '\\u221A',\n            sqsub: '\\u228F',\n            sqsube: '\\u2291',\n            sqsubset: '\\u228F',\n            sqsubseteq: '\\u2291',\n            sqsup: '\\u2290',\n            sqsupe: '\\u2292',\n            sqsupset: '\\u2290',\n            sqsupseteq: '\\u2292',\n            squ: '\\u25A1',\n            Square: '\\u25A1',\n            square: '\\u25A1',\n            SquareIntersection: '\\u2293',\n            SquareSubset: '\\u228F',\n            SquareSubsetEqual: '\\u2291',\n            SquareSuperset: '\\u2290',\n            SquareSupersetEqual: '\\u2292',\n            SquareUnion: '\\u2294',\n            squarf: '\\u25AA',\n            squf: '\\u25AA',\n            srarr: '\\u2192',\n            Sscr: '\\uD835\\uDCAE',\n            sscr: '\\uD835\\uDCC8',\n            ssetmn: '\\u2216',\n            ssmile: '\\u2323',\n            sstarf: '\\u22C6',\n            Star: '\\u22C6',\n            star: '\\u2606',\n            starf: '\\u2605',\n            straightepsilon: '\\u03F5',\n            straightphi: '\\u03D5',\n            strns: '\\u00AF',\n            Sub: '\\u22D0',\n            sub: '\\u2282',\n            subdot: '\\u2ABD',\n            subE: '\\u2AC5',\n            sube: '\\u2286',\n            subedot: '\\u2AC3',\n            submult: '\\u2AC1',\n            subnE: '\\u2ACB',\n            subne: '\\u228A',\n            subplus: '\\u2ABF',\n            subrarr: '\\u2979',\n            Subset: '\\u22D0',\n            subset: '\\u2282',\n            subseteq: '\\u2286',\n            subseteqq: '\\u2AC5',\n            SubsetEqual: '\\u2286',\n            subsetneq: '\\u228A',\n            subsetneqq: '\\u2ACB',\n            subsim: '\\u2AC7',\n            subsub: '\\u2AD5',\n            subsup: '\\u2AD3',\n            succ: '\\u227B',\n            succapprox: '\\u2AB8',\n            succcurlyeq: '\\u227D',\n            Succeeds: '\\u227B',\n            SucceedsEqual: '\\u2AB0',\n            SucceedsSlantEqual: '\\u227D',\n            SucceedsTilde: '\\u227F',\n            succeq: '\\u2AB0',\n            succnapprox: '\\u2ABA',\n            succneqq: '\\u2AB6',\n            succnsim: '\\u22E9',\n            succsim: '\\u227F',\n            SuchThat: '\\u220B',\n            Sum: '\\u2211',\n            sum: '\\u2211',\n            sung: '\\u266A',\n            Sup: '\\u22D1',\n            sup: '\\u2283',\n            sup1: '\\u00B9',\n            sup2: '\\u00B2',\n            sup3: '\\u00B3',\n            supdot: '\\u2ABE',\n            supdsub: '\\u2AD8',\n            supE: '\\u2AC6',\n            supe: '\\u2287',\n            supedot: '\\u2AC4',\n            Superset: '\\u2283',\n            SupersetEqual: '\\u2287',\n            suphsol: '\\u27C9',\n            suphsub: '\\u2AD7',\n            suplarr: '\\u297B',\n            supmult: '\\u2AC2',\n            supnE: '\\u2ACC',\n            supne: '\\u228B',\n            supplus: '\\u2AC0',\n            Supset: '\\u22D1',\n            supset: '\\u2283',\n            supseteq: '\\u2287',\n            supseteqq: '\\u2AC6',\n            supsetneq: '\\u228B',\n            supsetneqq: '\\u2ACC',\n            supsim: '\\u2AC8',\n            supsub: '\\u2AD4',\n            supsup: '\\u2AD6',\n            swarhk: '\\u2926',\n            swArr: '\\u21D9',\n            swarr: '\\u2199',\n            swarrow: '\\u2199',\n            swnwar: '\\u292A',\n            szlig: '\\u00DF',\n            Tab: '\\u0009',\n            target: '\\u2316',\n            Tau: '\\u03A4',\n            tau: '\\u03C4',\n            tbrk: '\\u23B4',\n            Tcaron: '\\u0164',\n            tcaron: '\\u0165',\n            Tcedil: '\\u0162',\n            tcedil: '\\u0163',\n            Tcy: '\\u0422',\n            tcy: '\\u0442',\n            tdot: '\\u20DB',\n            telrec: '\\u2315',\n            Tfr: '\\uD835\\uDD17',\n            tfr: '\\uD835\\uDD31',\n            there4: '\\u2234',\n            Therefore: '\\u2234',\n            therefore: '\\u2234',\n            Theta: '\\u0398',\n            theta: '\\u03B8',\n            thetasym: '\\u03D1',\n            thetav: '\\u03D1',\n            thickapprox: '\\u2248',\n            thicksim: '\\u223C',\n            ThickSpace: '\\u205F\\u200A',\n            thinsp: '\\u2009',\n            ThinSpace: '\\u2009',\n            thkap: '\\u2248',\n            thksim: '\\u223C',\n            THORN: '\\u00DE',\n            thorn: '\\u00FE',\n            Tilde: '\\u223C',\n            tilde: '\\u02DC',\n            TildeEqual: '\\u2243',\n            TildeFullEqual: '\\u2245',\n            TildeTilde: '\\u2248',\n            times: '\\u00D7',\n            timesb: '\\u22A0',\n            timesbar: '\\u2A31',\n            timesd: '\\u2A30',\n            tint: '\\u222D',\n            toea: '\\u2928',\n            top: '\\u22A4',\n            topbot: '\\u2336',\n            topcir: '\\u2AF1',\n            Topf: '\\uD835\\uDD4B',\n            topf: '\\uD835\\uDD65',\n            topfork: '\\u2ADA',\n            tosa: '\\u2929',\n            tprime: '\\u2034',\n            TRADE: '\\u2122',\n            trade: '\\u2122',\n            triangle: '\\u25B5',\n            triangledown: '\\u25BF',\n            triangleleft: '\\u25C3',\n            trianglelefteq: '\\u22B4',\n            triangleq: '\\u225C',\n            triangleright: '\\u25B9',\n            trianglerighteq: '\\u22B5',\n            tridot: '\\u25EC',\n            trie: '\\u225C',\n            triminus: '\\u2A3A',\n            TripleDot: '\\u20DB',\n            triplus: '\\u2A39',\n            trisb: '\\u29CD',\n            tritime: '\\u2A3B',\n            trpezium: '\\u23E2',\n            Tscr: '\\uD835\\uDCAF',\n            tscr: '\\uD835\\uDCC9',\n            TScy: '\\u0426',\n            tscy: '\\u0446',\n            TSHcy: '\\u040B',\n            tshcy: '\\u045B',\n            Tstrok: '\\u0166',\n            tstrok: '\\u0167',\n            twixt: '\\u226C',\n            twoheadleftarrow: '\\u219E',\n            twoheadrightarrow: '\\u21A0',\n            Uacute: '\\u00DA',\n            uacute: '\\u00FA',\n            Uarr: '\\u219F',\n            uArr: '\\u21D1',\n            uarr: '\\u2191',\n            Uarrocir: '\\u2949',\n            Ubrcy: '\\u040E',\n            ubrcy: '\\u045E',\n            Ubreve: '\\u016C',\n            ubreve: '\\u016D',\n            Ucirc: '\\u00DB',\n            ucirc: '\\u00FB',\n            Ucy: '\\u0423',\n            ucy: '\\u0443',\n            udarr: '\\u21C5',\n            Udblac: '\\u0170',\n            udblac: '\\u0171',\n            udhar: '\\u296E',\n            ufisht: '\\u297E',\n            Ufr: '\\uD835\\uDD18',\n            ufr: '\\uD835\\uDD32',\n            Ugrave: '\\u00D9',\n            ugrave: '\\u00F9',\n            uHar: '\\u2963',\n            uharl: '\\u21BF',\n            uharr: '\\u21BE',\n            uhblk: '\\u2580',\n            ulcorn: '\\u231C',\n            ulcorner: '\\u231C',\n            ulcrop: '\\u230F',\n            ultri: '\\u25F8',\n            Umacr: '\\u016A',\n            umacr: '\\u016B',\n            uml: '\\u00A8',\n            UnderBar: '\\u005F',\n            UnderBrace: '\\u23DF',\n            UnderBracket: '\\u23B5',\n            UnderParenthesis: '\\u23DD',\n            Union: '\\u22C3',\n            UnionPlus: '\\u228E',\n            Uogon: '\\u0172',\n            uogon: '\\u0173',\n            Uopf: '\\uD835\\uDD4C',\n            uopf: '\\uD835\\uDD66',\n            UpArrow: '\\u2191',\n            Uparrow: '\\u21D1',\n            uparrow: '\\u2191',\n            UpArrowBar: '\\u2912',\n            UpArrowDownArrow: '\\u21C5',\n            UpDownArrow: '\\u2195',\n            Updownarrow: '\\u21D5',\n            updownarrow: '\\u2195',\n            UpEquilibrium: '\\u296E',\n            upharpoonleft: '\\u21BF',\n            upharpoonright: '\\u21BE',\n            uplus: '\\u228E',\n            UpperLeftArrow: '\\u2196',\n            UpperRightArrow: '\\u2197',\n            Upsi: '\\u03D2',\n            upsi: '\\u03C5',\n            upsih: '\\u03D2',\n            Upsilon: '\\u03A5',\n            upsilon: '\\u03C5',\n            UpTee: '\\u22A5',\n            UpTeeArrow: '\\u21A5',\n            upuparrows: '\\u21C8',\n            urcorn: '\\u231D',\n            urcorner: '\\u231D',\n            urcrop: '\\u230E',\n            Uring: '\\u016E',\n            uring: '\\u016F',\n            urtri: '\\u25F9',\n            Uscr: '\\uD835\\uDCB0',\n            uscr: '\\uD835\\uDCCA',\n            utdot: '\\u22F0',\n            Utilde: '\\u0168',\n            utilde: '\\u0169',\n            utri: '\\u25B5',\n            utrif: '\\u25B4',\n            uuarr: '\\u21C8',\n            Uuml: '\\u00DC',\n            uuml: '\\u00FC',\n            uwangle: '\\u29A7',\n            vangrt: '\\u299C',\n            varepsilon: '\\u03F5',\n            varkappa: '\\u03F0',\n            varnothing: '\\u2205',\n            varphi: '\\u03D5',\n            varpi: '\\u03D6',\n            varpropto: '\\u221D',\n            vArr: '\\u21D5',\n            varr: '\\u2195',\n            varrho: '\\u03F1',\n            varsigma: '\\u03C2',\n            varsubsetneq: '\\u228A\\uFE00',\n            varsubsetneqq: '\\u2ACB\\uFE00',\n            varsupsetneq: '\\u228B\\uFE00',\n            varsupsetneqq: '\\u2ACC\\uFE00',\n            vartheta: '\\u03D1',\n            vartriangleleft: '\\u22B2',\n            vartriangleright: '\\u22B3',\n            Vbar: '\\u2AEB',\n            vBar: '\\u2AE8',\n            vBarv: '\\u2AE9',\n            Vcy: '\\u0412',\n            vcy: '\\u0432',\n            VDash: '\\u22AB',\n            Vdash: '\\u22A9',\n            vDash: '\\u22A8',\n            vdash: '\\u22A2',\n            Vdashl: '\\u2AE6',\n            Vee: '\\u22C1',\n            vee: '\\u2228',\n            veebar: '\\u22BB',\n            veeeq: '\\u225A',\n            vellip: '\\u22EE',\n            Verbar: '\\u2016',\n            verbar: '\\u007C',\n            Vert: '\\u2016',\n            vert: '\\u007C',\n            VerticalBar: '\\u2223',\n            VerticalLine: '\\u007C',\n            VerticalSeparator: '\\u2758',\n            VerticalTilde: '\\u2240',\n            VeryThinSpace: '\\u200A',\n            Vfr: '\\uD835\\uDD19',\n            vfr: '\\uD835\\uDD33',\n            vltri: '\\u22B2',\n            vnsub: '\\u2282\\u20D2',\n            vnsup: '\\u2283\\u20D2',\n            Vopf: '\\uD835\\uDD4D',\n            vopf: '\\uD835\\uDD67',\n            vprop: '\\u221D',\n            vrtri: '\\u22B3',\n            Vscr: '\\uD835\\uDCB1',\n            vscr: '\\uD835\\uDCCB',\n            vsubnE: '\\u2ACB\\uFE00',\n            vsubne: '\\u228A\\uFE00',\n            vsupnE: '\\u2ACC\\uFE00',\n            vsupne: '\\u228B\\uFE00',\n            Vvdash: '\\u22AA',\n            vzigzag: '\\u299A',\n            Wcirc: '\\u0174',\n            wcirc: '\\u0175',\n            wedbar: '\\u2A5F',\n            Wedge: '\\u22C0',\n            wedge: '\\u2227',\n            wedgeq: '\\u2259',\n            weierp: '\\u2118',\n            Wfr: '\\uD835\\uDD1A',\n            wfr: '\\uD835\\uDD34',\n            Wopf: '\\uD835\\uDD4E',\n            wopf: '\\uD835\\uDD68',\n            wp: '\\u2118',\n            wr: '\\u2240',\n            wreath: '\\u2240',\n            Wscr: '\\uD835\\uDCB2',\n            wscr: '\\uD835\\uDCCC',\n            xcap: '\\u22C2',\n            xcirc: '\\u25EF',\n            xcup: '\\u22C3',\n            xdtri: '\\u25BD',\n            Xfr: '\\uD835\\uDD1B',\n            xfr: '\\uD835\\uDD35',\n            xhArr: '\\u27FA',\n            xharr: '\\u27F7',\n            Xi: '\\u039E',\n            xi: '\\u03BE',\n            xlArr: '\\u27F8',\n            xlarr: '\\u27F5',\n            xmap: '\\u27FC',\n            xnis: '\\u22FB',\n            xodot: '\\u2A00',\n            Xopf: '\\uD835\\uDD4F',\n            xopf: '\\uD835\\uDD69',\n            xoplus: '\\u2A01',\n            xotime: '\\u2A02',\n            xrArr: '\\u27F9',\n            xrarr: '\\u27F6',\n            Xscr: '\\uD835\\uDCB3',\n            xscr: '\\uD835\\uDCCD',\n            xsqcup: '\\u2A06',\n            xuplus: '\\u2A04',\n            xutri: '\\u25B3',\n            xvee: '\\u22C1',\n            xwedge: '\\u22C0',\n            Yacute: '\\u00DD',\n            yacute: '\\u00FD',\n            YAcy: '\\u042F',\n            yacy: '\\u044F',\n            Ycirc: '\\u0176',\n            ycirc: '\\u0177',\n            Ycy: '\\u042B',\n            ycy: '\\u044B',\n            yen: '\\u00A5',\n            Yfr: '\\uD835\\uDD1C',\n            yfr: '\\uD835\\uDD36',\n            YIcy: '\\u0407',\n            yicy: '\\u0457',\n            Yopf: '\\uD835\\uDD50',\n            yopf: '\\uD835\\uDD6A',\n            Yscr: '\\uD835\\uDCB4',\n            yscr: '\\uD835\\uDCCE',\n            YUcy: '\\u042E',\n            yucy: '\\u044E',\n            Yuml: '\\u0178',\n            yuml: '\\u00FF',\n            Zacute: '\\u0179',\n            zacute: '\\u017A',\n            Zcaron: '\\u017D',\n            zcaron: '\\u017E',\n            Zcy: '\\u0417',\n            zcy: '\\u0437',\n            Zdot: '\\u017B',\n            zdot: '\\u017C',\n            zeetrf: '\\u2128',\n            ZeroWidthSpace: '\\u200B',\n            Zeta: '\\u0396',\n            zeta: '\\u03B6',\n            Zfr: '\\u2128',\n            zfr: '\\uD835\\uDD37',\n            ZHcy: '\\u0416',\n            zhcy: '\\u0436',\n            zigrarr: '\\u21DD',\n            Zopf: '\\u2124',\n            zopf: '\\uD835\\uDD6B',\n            Zscr: '\\uD835\\uDCB5',\n            zscr: '\\uD835\\uDCCF',\n            zwj: '\\u200D',\n            zwnj: '\\u200C'\n        });\n\n        /**\n         * @deprecated use `HTML_ENTITIES` instead\n         * @see HTML_ENTITIES\n         */\n        exports.entityMap = exports.HTML_ENTITIES;\n    });\n    entities.XML_ENTITIES;\n    entities.HTML_ENTITIES;\n    entities.entityMap;\n\n    var NAMESPACE$1 = conventions.NAMESPACE;\n\n    //[4]   \tNameStartChar\t   ::=   \t\":\" | [A-Z] | \"_\" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]\n    //[4a]   \tNameChar\t   ::=   \tNameStartChar | \"-\" | \".\" | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]\n    //[5]   \tName\t   ::=   \tNameStartChar (NameChar)*\n    var nameStartChar = /[A-Z_a-z\\xC0-\\xD6\\xD8-\\xF6\\u00F8-\\u02FF\\u0370-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD]/; //\\u10000-\\uEFFFF\n    var nameChar = new RegExp(\"[\\\\-\\\\.0-9\" + nameStartChar.source.slice(1, -1) + \"\\\\u00B7\\\\u0300-\\\\u036F\\\\u203F-\\\\u2040]\");\n    var tagNamePattern = new RegExp('^' + nameStartChar.source + nameChar.source + '*(?:\\:' + nameStartChar.source + nameChar.source + '*)?$');\n    //var tagNamePattern = /^[a-zA-Z_][\\w\\-\\.]*(?:\\:[a-zA-Z_][\\w\\-\\.]*)?$/\n    //var handlers = 'resolveEntity,getExternalSubset,characters,endDocument,endElement,endPrefixMapping,ignorableWhitespace,processingInstruction,setDocumentLocator,skippedEntity,startDocument,startElement,startPrefixMapping,notationDecl,unparsedEntityDecl,error,fatalError,warning,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,comment,endCDATA,endDTD,endEntity,startCDATA,startDTD,startEntity'.split(',')\n\n    //S_TAG,\tS_ATTR,\tS_EQ,\tS_ATTR_NOQUOT_VALUE\n    //S_ATTR_SPACE,\tS_ATTR_END,\tS_TAG_SPACE, S_TAG_CLOSE\n    var S_TAG = 0; //tag name offerring\n    var S_ATTR = 1; //attr name offerring\n    var S_ATTR_SPACE = 2; //attr name end and space offer\n    var S_EQ = 3; //=space?\n    var S_ATTR_NOQUOT_VALUE = 4; //attr value(no quot value only)\n    var S_ATTR_END = 5; //attr value end and no space(quot end)\n    var S_TAG_SPACE = 6; //(attr value end || tag end ) && (space offer)\n    var S_TAG_CLOSE = 7; //closed el<el />\n\n    /**\n     * Creates an error that will not be caught by XMLReader aka the SAX parser.\n     *\n     * @param {string} message\n     * @param {any?} locator Optional, can provide details about the location in the source\n     * @constructor\n     */\n    function ParseError$1(message, locator) {\n        this.message = message;\n        this.locator = locator;\n        if (Error.captureStackTrace) Error.captureStackTrace(this, ParseError$1);\n    }\n    ParseError$1.prototype = new Error();\n    ParseError$1.prototype.name = ParseError$1.name;\n    function XMLReader$1() {}\n    XMLReader$1.prototype = {\n        parse: function (source, defaultNSMap, entityMap) {\n            var domBuilder = this.domBuilder;\n            domBuilder.startDocument();\n            _copy(defaultNSMap, defaultNSMap = {});\n            parse$1(source, defaultNSMap, entityMap, domBuilder, this.errorHandler);\n            domBuilder.endDocument();\n        }\n    };\n    function parse$1(source, defaultNSMapCopy, entityMap, domBuilder, errorHandler) {\n        function fixedFromCharCode(code) {\n            // String.prototype.fromCharCode does not supports\n            // > 2 bytes unicode chars directly\n            if (code > 0xffff) {\n                code -= 0x10000;\n                var surrogate1 = 0xd800 + (code >> 10),\n                    surrogate2 = 0xdc00 + (code & 0x3ff);\n                return String.fromCharCode(surrogate1, surrogate2);\n            } else {\n                return String.fromCharCode(code);\n            }\n        }\n        function entityReplacer(a) {\n            var k = a.slice(1, -1);\n            if (Object.hasOwnProperty.call(entityMap, k)) {\n                return entityMap[k];\n            } else if (k.charAt(0) === '#') {\n                return fixedFromCharCode(parseInt(k.substr(1).replace('x', '0x')));\n            } else {\n                errorHandler.error('entity not found:' + a);\n                return a;\n            }\n        }\n        function appendText(end) {\n            //has some bugs\n            if (end > start) {\n                var xt = source.substring(start, end).replace(/&#?\\w+;/g, entityReplacer);\n                locator && position(start);\n                domBuilder.characters(xt, 0, end - start);\n                start = end;\n            }\n        }\n        function position(p, m) {\n            while (p >= lineEnd && (m = linePattern.exec(source))) {\n                lineStart = m.index;\n                lineEnd = lineStart + m[0].length;\n                locator.lineNumber++;\n                //console.log('line++:',locator,startPos,endPos)\n            }\n\n            locator.columnNumber = p - lineStart + 1;\n        }\n        var lineStart = 0;\n        var lineEnd = 0;\n        var linePattern = /.*(?:\\r\\n?|\\n)|.*$/g;\n        var locator = domBuilder.locator;\n        var parseStack = [{\n            currentNSMap: defaultNSMapCopy\n        }];\n        var closeMap = {};\n        var start = 0;\n        while (true) {\n            try {\n                var tagStart = source.indexOf('<', start);\n                if (tagStart < 0) {\n                    if (!source.substr(start).match(/^\\s*$/)) {\n                        var doc = domBuilder.doc;\n                        var text = doc.createTextNode(source.substr(start));\n                        doc.appendChild(text);\n                        domBuilder.currentElement = text;\n                    }\n                    return;\n                }\n                if (tagStart > start) {\n                    appendText(tagStart);\n                }\n                switch (source.charAt(tagStart + 1)) {\n                    case '/':\n                        var end = source.indexOf('>', tagStart + 3);\n                        var tagName = source.substring(tagStart + 2, end).replace(/[ \\t\\n\\r]+$/g, '');\n                        var config = parseStack.pop();\n                        if (end < 0) {\n                            tagName = source.substring(tagStart + 2).replace(/[\\s<].*/, '');\n                            errorHandler.error(\"end tag name: \" + tagName + ' is not complete:' + config.tagName);\n                            end = tagStart + 1 + tagName.length;\n                        } else if (tagName.match(/\\s</)) {\n                            tagName = tagName.replace(/[\\s<].*/, '');\n                            errorHandler.error(\"end tag name: \" + tagName + ' maybe not complete');\n                            end = tagStart + 1 + tagName.length;\n                        }\n                        var localNSMap = config.localNSMap;\n                        var endMatch = config.tagName == tagName;\n                        var endIgnoreCaseMach = endMatch || config.tagName && config.tagName.toLowerCase() == tagName.toLowerCase();\n                        if (endIgnoreCaseMach) {\n                            domBuilder.endElement(config.uri, config.localName, tagName);\n                            if (localNSMap) {\n                                for (var prefix in localNSMap) {\n                                    if (Object.prototype.hasOwnProperty.call(localNSMap, prefix)) {\n                                        domBuilder.endPrefixMapping(prefix);\n                                    }\n                                }\n                            }\n                            if (!endMatch) {\n                                errorHandler.fatalError(\"end tag name: \" + tagName + ' is not match the current start tagName:' + config.tagName); // No known test case\n                            }\n                        } else {\n                            parseStack.push(config);\n                        }\n                        end++;\n                        break;\n                    // end elment\n                    case '?':\n                        // <?...?>\n                        locator && position(tagStart);\n                        end = parseInstruction(source, tagStart, domBuilder);\n                        break;\n                    case '!':\n                        // <!doctype,<![CDATA,<!--\n                        locator && position(tagStart);\n                        end = parseDCC(source, tagStart, domBuilder, errorHandler);\n                        break;\n                    default:\n                        locator && position(tagStart);\n                        var el = new ElementAttributes();\n                        var currentNSMap = parseStack[parseStack.length - 1].currentNSMap;\n                        //elStartEnd\n                        var end = parseElementStartPart(source, tagStart, el, currentNSMap, entityReplacer, errorHandler);\n                        var len = el.length;\n                        if (!el.closed && fixSelfClosed(source, end, el.tagName, closeMap)) {\n                            el.closed = true;\n                            if (!entityMap.nbsp) {\n                                errorHandler.warning('unclosed xml attribute');\n                            }\n                        }\n                        if (locator && len) {\n                            var locator2 = copyLocator(locator, {});\n                            //try{//attribute position fixed\n                            for (var i = 0; i < len; i++) {\n                                var a = el[i];\n                                position(a.offset);\n                                a.locator = copyLocator(locator, {});\n                            }\n                            domBuilder.locator = locator2;\n                            if (appendElement$1(el, domBuilder, currentNSMap)) {\n                                parseStack.push(el);\n                            }\n                            domBuilder.locator = locator;\n                        } else {\n                            if (appendElement$1(el, domBuilder, currentNSMap)) {\n                                parseStack.push(el);\n                            }\n                        }\n                        if (NAMESPACE$1.isHTML(el.uri) && !el.closed) {\n                            end = parseHtmlSpecialContent(source, end, el.tagName, entityReplacer, domBuilder);\n                        } else {\n                            end++;\n                        }\n                }\n            } catch (e) {\n                if (e instanceof ParseError$1) {\n                    throw e;\n                }\n                errorHandler.error('element parse error: ' + e);\n                end = -1;\n            }\n            if (end > start) {\n                start = end;\n            } else {\n                //TODO: 这里有可能sax回退，有位置错误风险\n                appendText(Math.max(tagStart, start) + 1);\n            }\n        }\n    }\n    function copyLocator(f, t) {\n        t.lineNumber = f.lineNumber;\n        t.columnNumber = f.columnNumber;\n        return t;\n    }\n\n    /**\n     * @see #appendElement(source,elStartEnd,el,selfClosed,entityReplacer,domBuilder,parseStack);\n     * @return end of the elementStartPart(end of elementEndPart for selfClosed el)\n     */\n    function parseElementStartPart(source, start, el, currentNSMap, entityReplacer, errorHandler) {\n        /**\n         * @param {string} qname\n         * @param {string} value\n         * @param {number} startIndex\n         */\n        function addAttribute(qname, value, startIndex) {\n            if (el.attributeNames.hasOwnProperty(qname)) {\n                errorHandler.fatalError('Attribute ' + qname + ' redefined');\n            }\n            el.addValue(qname,\n                // @see https://www.w3.org/TR/xml/#AVNormalize\n                // since the xmldom sax parser does not \"interpret\" DTD the following is not implemented:\n                // - recursive replacement of (DTD) entity references\n                // - trimming and collapsing multiple spaces into a single one for attributes that are not of type CDATA\n                value.replace(/[\\t\\n\\r]/g, ' ').replace(/&#?\\w+;/g, entityReplacer), startIndex);\n        }\n        var attrName;\n        var value;\n        var p = ++start;\n        var s = S_TAG; //status\n        while (true) {\n            var c = source.charAt(p);\n            switch (c) {\n                case '=':\n                    if (s === S_ATTR) {\n                        //attrName\n                        attrName = source.slice(start, p);\n                        s = S_EQ;\n                    } else if (s === S_ATTR_SPACE) {\n                        s = S_EQ;\n                    } else {\n                        //fatalError: equal must after attrName or space after attrName\n                        throw new Error('attribute equal must after attrName'); // No known test case\n                    }\n\n                    break;\n                case '\\'':\n                case '\"':\n                    if (s === S_EQ || s === S_ATTR //|| s == S_ATTR_SPACE\n                    ) {\n                        //equal\n                        if (s === S_ATTR) {\n                            errorHandler.warning('attribute value must after \"=\"');\n                            attrName = source.slice(start, p);\n                        }\n                        start = p + 1;\n                        p = source.indexOf(c, start);\n                        if (p > 0) {\n                            value = source.slice(start, p);\n                            addAttribute(attrName, value, start - 1);\n                            s = S_ATTR_END;\n                        } else {\n                            //fatalError: no end quot match\n                            throw new Error('attribute value no end \\'' + c + '\\' match');\n                        }\n                    } else if (s == S_ATTR_NOQUOT_VALUE) {\n                        value = source.slice(start, p);\n                        addAttribute(attrName, value, start);\n                        errorHandler.warning('attribute \"' + attrName + '\" missed start quot(' + c + ')!!');\n                        start = p + 1;\n                        s = S_ATTR_END;\n                    } else {\n                        //fatalError: no equal before\n                        throw new Error('attribute value must after \"=\"'); // No known test case\n                    }\n\n                    break;\n                case '/':\n                    switch (s) {\n                        case S_TAG:\n                            el.setTagName(source.slice(start, p));\n                        case S_ATTR_END:\n                        case S_TAG_SPACE:\n                        case S_TAG_CLOSE:\n                            s = S_TAG_CLOSE;\n                            el.closed = true;\n                        case S_ATTR_NOQUOT_VALUE:\n                        case S_ATTR:\n                            break;\n                        case S_ATTR_SPACE:\n                            el.closed = true;\n                            break;\n                        //case S_EQ:\n                        default:\n                            throw new Error(\"attribute invalid close char('/')\");\n                        // No known test case\n                    }\n\n                    break;\n                case '':\n                    //end document\n                    errorHandler.error('unexpected end of input');\n                    if (s == S_TAG) {\n                        el.setTagName(source.slice(start, p));\n                    }\n                    return p;\n                case '>':\n                    switch (s) {\n                        case S_TAG:\n                            el.setTagName(source.slice(start, p));\n                        case S_ATTR_END:\n                        case S_TAG_SPACE:\n                        case S_TAG_CLOSE:\n                            break;\n                        //normal\n                        case S_ATTR_NOQUOT_VALUE: //Compatible state\n                        case S_ATTR:\n                            value = source.slice(start, p);\n                            if (value.slice(-1) === '/') {\n                                el.closed = true;\n                                value = value.slice(0, -1);\n                            }\n                        case S_ATTR_SPACE:\n                            if (s === S_ATTR_SPACE) {\n                                value = attrName;\n                            }\n                            if (s == S_ATTR_NOQUOT_VALUE) {\n                                errorHandler.warning('attribute \"' + value + '\" missed quot(\")!');\n                                addAttribute(attrName, value, start);\n                            } else {\n                                if (!NAMESPACE$1.isHTML(currentNSMap['']) || !value.match(/^(?:disabled|checked|selected)$/i)) {\n                                    errorHandler.warning('attribute \"' + value + '\" missed value!! \"' + value + '\" instead!!');\n                                }\n                                addAttribute(value, value, start);\n                            }\n                            break;\n                        case S_EQ:\n                            throw new Error('attribute value missed!!');\n                    }\n                    //\t\t\tconsole.log(tagName,tagNamePattern,tagNamePattern.test(tagName))\n                    return p;\n                /*xml space '\\x20' | #x9 | #xD | #xA; */\n                case '\\u0080':\n                    c = ' ';\n                default:\n                    if (c <= ' ') {\n                        //space\n                        switch (s) {\n                            case S_TAG:\n                                el.setTagName(source.slice(start, p)); //tagName\n                                s = S_TAG_SPACE;\n                                break;\n                            case S_ATTR:\n                                attrName = source.slice(start, p);\n                                s = S_ATTR_SPACE;\n                                break;\n                            case S_ATTR_NOQUOT_VALUE:\n                                var value = source.slice(start, p);\n                                errorHandler.warning('attribute \"' + value + '\" missed quot(\")!!');\n                                addAttribute(attrName, value, start);\n                            case S_ATTR_END:\n                                s = S_TAG_SPACE;\n                                break;\n                            //case S_TAG_SPACE:\n                            //case S_EQ:\n                            //case S_ATTR_SPACE:\n                            //\tvoid();break;\n                            //case S_TAG_CLOSE:\n                            //ignore warning\n                        }\n                    } else {\n                        //not space\n                        //S_TAG,\tS_ATTR,\tS_EQ,\tS_ATTR_NOQUOT_VALUE\n                        //S_ATTR_SPACE,\tS_ATTR_END,\tS_TAG_SPACE, S_TAG_CLOSE\n                        switch (s) {\n                            //case S_TAG:void();break;\n                            //case S_ATTR:void();break;\n                            //case S_ATTR_NOQUOT_VALUE:void();break;\n                            case S_ATTR_SPACE:\n                                el.tagName;\n                                if (!NAMESPACE$1.isHTML(currentNSMap['']) || !attrName.match(/^(?:disabled|checked|selected)$/i)) {\n                                    errorHandler.warning('attribute \"' + attrName + '\" missed value!! \"' + attrName + '\" instead2!!');\n                                }\n                                addAttribute(attrName, attrName, start);\n                                start = p;\n                                s = S_ATTR;\n                                break;\n                            case S_ATTR_END:\n                                errorHandler.warning('attribute space is required\"' + attrName + '\"!!');\n                            case S_TAG_SPACE:\n                                s = S_ATTR;\n                                start = p;\n                                break;\n                            case S_EQ:\n                                s = S_ATTR_NOQUOT_VALUE;\n                                start = p;\n                                break;\n                            case S_TAG_CLOSE:\n                                throw new Error(\"elements closed character '/' and '>' must be connected to\");\n                        }\n                    }\n            } //end outer switch\n            //console.log('p++',p)\n            p++;\n        }\n    }\n    /**\n     * @return true if has new namespace define\n     */\n    function appendElement$1(el, domBuilder, currentNSMap) {\n        var tagName = el.tagName;\n        var localNSMap = null;\n        //var currentNSMap = parseStack[parseStack.length-1].currentNSMap;\n        var i = el.length;\n        while (i--) {\n            var a = el[i];\n            var qName = a.qName;\n            var value = a.value;\n            var nsp = qName.indexOf(':');\n            if (nsp > 0) {\n                var prefix = a.prefix = qName.slice(0, nsp);\n                var localName = qName.slice(nsp + 1);\n                var nsPrefix = prefix === 'xmlns' && localName;\n            } else {\n                localName = qName;\n                prefix = null;\n                nsPrefix = qName === 'xmlns' && '';\n            }\n            //can not set prefix,because prefix !== ''\n            a.localName = localName;\n            //prefix == null for no ns prefix attribute\n            if (nsPrefix !== false) {\n                //hack!!\n                if (localNSMap == null) {\n                    localNSMap = {};\n                    //console.log(currentNSMap,0)\n                    _copy(currentNSMap, currentNSMap = {});\n                    //console.log(currentNSMap,1)\n                }\n\n                currentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;\n                a.uri = NAMESPACE$1.XMLNS;\n                domBuilder.startPrefixMapping(nsPrefix, value);\n            }\n        }\n        var i = el.length;\n        while (i--) {\n            a = el[i];\n            var prefix = a.prefix;\n            if (prefix) {\n                //no prefix attribute has no namespace\n                if (prefix === 'xml') {\n                    a.uri = NAMESPACE$1.XML;\n                }\n                if (prefix !== 'xmlns') {\n                    a.uri = currentNSMap[prefix || ''];\n\n                    //{console.log('###'+a.qName,domBuilder.locator.systemId+'',currentNSMap,a.uri)}\n                }\n            }\n        }\n\n        var nsp = tagName.indexOf(':');\n        if (nsp > 0) {\n            prefix = el.prefix = tagName.slice(0, nsp);\n            localName = el.localName = tagName.slice(nsp + 1);\n        } else {\n            prefix = null; //important!!\n            localName = el.localName = tagName;\n        }\n        //no prefix element has default namespace\n        var ns = el.uri = currentNSMap[prefix || ''];\n        domBuilder.startElement(ns, localName, tagName, el);\n        //endPrefixMapping and startPrefixMapping have not any help for dom builder\n        //localNSMap = null\n        if (el.closed) {\n            domBuilder.endElement(ns, localName, tagName);\n            if (localNSMap) {\n                for (prefix in localNSMap) {\n                    if (Object.prototype.hasOwnProperty.call(localNSMap, prefix)) {\n                        domBuilder.endPrefixMapping(prefix);\n                    }\n                }\n            }\n        } else {\n            el.currentNSMap = currentNSMap;\n            el.localNSMap = localNSMap;\n            //parseStack.push(el);\n            return true;\n        }\n    }\n    function parseHtmlSpecialContent(source, elStartEnd, tagName, entityReplacer, domBuilder) {\n        if (/^(?:script|textarea)$/i.test(tagName)) {\n            var elEndStart = source.indexOf('</' + tagName + '>', elStartEnd);\n            var text = source.substring(elStartEnd + 1, elEndStart);\n            if (/[&<]/.test(text)) {\n                if (/^script$/i.test(tagName)) {\n                    //if(!/\\]\\]>/.test(text)){\n                    //lexHandler.startCDATA();\n                    domBuilder.characters(text, 0, text.length);\n                    //lexHandler.endCDATA();\n                    return elEndStart;\n                    //}\n                } //}else{//text area\n                text = text.replace(/&#?\\w+;/g, entityReplacer);\n                domBuilder.characters(text, 0, text.length);\n                return elEndStart;\n                //}\n            }\n        }\n\n        return elStartEnd + 1;\n    }\n    function fixSelfClosed(source, elStartEnd, tagName, closeMap) {\n        //if(tagName in closeMap){\n        var pos = closeMap[tagName];\n        if (pos == null) {\n            //console.log(tagName)\n            pos = source.lastIndexOf('</' + tagName + '>');\n            if (pos < elStartEnd) {\n                //忘记闭合\n                pos = source.lastIndexOf('</' + tagName);\n            }\n            closeMap[tagName] = pos;\n        }\n        return pos < elStartEnd;\n        //}\n    }\n\n    function _copy(source, target) {\n        for (var n in source) {\n            if (Object.prototype.hasOwnProperty.call(source, n)) {\n                target[n] = source[n];\n            }\n        }\n    }\n    function parseDCC(source, start, domBuilder, errorHandler) {\n        //sure start with '<!'\n        var next = source.charAt(start + 2);\n        switch (next) {\n            case '-':\n                if (source.charAt(start + 3) === '-') {\n                    var end = source.indexOf('-->', start + 4);\n                    //append comment source.substring(4,end)//<!--\n                    if (end > start) {\n                        domBuilder.comment(source, start + 4, end - start - 4);\n                        return end + 3;\n                    } else {\n                        errorHandler.error(\"Unclosed comment\");\n                        return -1;\n                    }\n                } else {\n                    //error\n                    return -1;\n                }\n            default:\n                if (source.substr(start + 3, 6) == 'CDATA[') {\n                    var end = source.indexOf(']]>', start + 9);\n                    domBuilder.startCDATA();\n                    domBuilder.characters(source, start + 9, end - start - 9);\n                    domBuilder.endCDATA();\n                    return end + 3;\n                }\n                //<!DOCTYPE\n                //startDTD(java.lang.String name, java.lang.String publicId, java.lang.String systemId)\n                var matchs = split(source, start);\n                var len = matchs.length;\n                if (len > 1 && /!doctype/i.test(matchs[0][0])) {\n                    var name = matchs[1][0];\n                    var pubid = false;\n                    var sysid = false;\n                    if (len > 3) {\n                        if (/^public$/i.test(matchs[2][0])) {\n                            pubid = matchs[3][0];\n                            sysid = len > 4 && matchs[4][0];\n                        } else if (/^system$/i.test(matchs[2][0])) {\n                            sysid = matchs[3][0];\n                        }\n                    }\n                    var lastMatch = matchs[len - 1];\n                    domBuilder.startDTD(name, pubid, sysid);\n                    domBuilder.endDTD();\n                    return lastMatch.index + lastMatch[0].length;\n                }\n        }\n        return -1;\n    }\n    function parseInstruction(source, start, domBuilder) {\n        var end = source.indexOf('?>', start);\n        if (end) {\n            var match = source.substring(start, end).match(/^<\\?(\\S*)\\s*([\\s\\S]*?)\\s*$/);\n            if (match) {\n                match[0].length;\n                domBuilder.processingInstruction(match[1], match[2]);\n                return end + 2;\n            } else {\n                //error\n                return -1;\n            }\n        }\n        return -1;\n    }\n    function ElementAttributes() {\n        this.attributeNames = {};\n    }\n    ElementAttributes.prototype = {\n        setTagName: function (tagName) {\n            if (!tagNamePattern.test(tagName)) {\n                throw new Error('invalid tagName:' + tagName);\n            }\n            this.tagName = tagName;\n        },\n        addValue: function (qName, value, offset) {\n            if (!tagNamePattern.test(qName)) {\n                throw new Error('invalid attribute:' + qName);\n            }\n            this.attributeNames[qName] = this.length;\n            this[this.length++] = {\n                qName: qName,\n                value: value,\n                offset: offset\n            };\n        },\n        length: 0,\n        getLocalName: function (i) {\n            return this[i].localName;\n        },\n        getLocator: function (i) {\n            return this[i].locator;\n        },\n        getQName: function (i) {\n            return this[i].qName;\n        },\n        getURI: function (i) {\n            return this[i].uri;\n        },\n        getValue: function (i) {\n            return this[i].value;\n        }\n        //\t,getIndex:function(uri, localName)){\n        //\t\tif(localName){\n        //\n        //\t\t}else{\n        //\t\t\tvar qName = uri\n        //\t\t}\n        //\t},\n        //\tgetValue:function(){return this.getValue(this.getIndex.apply(this,arguments))},\n        //\tgetType:function(uri,localName){}\n        //\tgetType:function(i){},\n    };\n\n    function split(source, start) {\n        var match;\n        var buf = [];\n        var reg = /'[^']+'|\"[^\"]+\"|[^\\s<>\\/=]+=?|(\\/?\\s*>|<)/g;\n        reg.lastIndex = start;\n        reg.exec(source); //skip <\n        while (match = reg.exec(source)) {\n            buf.push(match);\n            if (match[1]) return buf;\n        }\n    }\n    var XMLReader_1 = XMLReader$1;\n    var ParseError_1 = ParseError$1;\n    var sax = {\n        XMLReader: XMLReader_1,\n        ParseError: ParseError_1\n    };\n\n    var DOMImplementation = dom.DOMImplementation;\n    var NAMESPACE = conventions.NAMESPACE;\n    var ParseError = sax.ParseError;\n    var XMLReader = sax.XMLReader;\n\n    /**\n     * Normalizes line ending according to https://www.w3.org/TR/xml11/#sec-line-ends:\n     *\n     * > XML parsed entities are often stored in computer files which,\n     * > for editing convenience, are organized into lines.\n     * > These lines are typically separated by some combination\n     * > of the characters CARRIAGE RETURN (#xD) and LINE FEED (#xA).\n     * >\n     * > To simplify the tasks of applications, the XML processor must behave\n     * > as if it normalized all line breaks in external parsed entities (including the document entity)\n     * > on input, before parsing, by translating all of the following to a single #xA character:\n     * >\n     * > 1. the two-character sequence #xD #xA\n     * > 2. the two-character sequence #xD #x85\n     * > 3. the single character #x85\n     * > 4. the single character #x2028\n     * > 5. any #xD character that is not immediately followed by #xA or #x85.\n     *\n     * @param {string} input\n     * @returns {string}\n     */\n    function normalizeLineEndings(input) {\n        return input.replace(/\\r[\\n\\u0085]/g, '\\n').replace(/[\\r\\u0085\\u2028]/g, '\\n');\n    }\n\n    /**\n     * @typedef Locator\n     * @property {number} [columnNumber]\n     * @property {number} [lineNumber]\n     */\n\n    /**\n     * @typedef DOMParserOptions\n     * @property {DOMHandler} [domBuilder]\n     * @property {Function} [errorHandler]\n     * @property {(string) => string} [normalizeLineEndings] used to replace line endings before parsing\n     * \t\t\t\t\t\tdefaults to `normalizeLineEndings`\n     * @property {Locator} [locator]\n     * @property {Record<string, string>} [xmlns]\n     *\n     * @see normalizeLineEndings\n     */\n\n    /**\n     * The DOMParser interface provides the ability to parse XML or HTML source code\n     * from a string into a DOM `Document`.\n     *\n     * _xmldom is different from the spec in that it allows an `options` parameter,\n     * to override the default behavior._\n     *\n     * @param {DOMParserOptions} [options]\n     * @constructor\n     *\n     * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser\n     * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-parsing-and-serialization\n     */\n    function DOMParser$1(options) {\n        this.options = options || {\n            locator: {}\n        };\n    }\n    DOMParser$1.prototype.parseFromString = function (source, mimeType) {\n        var options = this.options;\n        var sax = new XMLReader();\n        var domBuilder = options.domBuilder || new DOMHandler(); //contentHandler and LexicalHandler\n        var errorHandler = options.errorHandler;\n        var locator = options.locator;\n        var defaultNSMap = options.xmlns || {};\n        var isHTML = /\\/x?html?$/.test(mimeType); //mimeType.toLowerCase().indexOf('html') > -1;\n        var entityMap = isHTML ? entities.HTML_ENTITIES : entities.XML_ENTITIES;\n        if (locator) {\n            domBuilder.setDocumentLocator(locator);\n        }\n        sax.errorHandler = buildErrorHandler(errorHandler, domBuilder, locator);\n        sax.domBuilder = options.domBuilder || domBuilder;\n        if (isHTML) {\n            defaultNSMap[''] = NAMESPACE.HTML;\n        }\n        defaultNSMap.xml = defaultNSMap.xml || NAMESPACE.XML;\n        var normalize = options.normalizeLineEndings || normalizeLineEndings;\n        if (source && typeof source === 'string') {\n            sax.parse(normalize(source), defaultNSMap, entityMap);\n        } else {\n            sax.errorHandler.error('invalid doc source');\n        }\n        return domBuilder.doc;\n    };\n    function buildErrorHandler(errorImpl, domBuilder, locator) {\n        if (!errorImpl) {\n            if (domBuilder instanceof DOMHandler) {\n                return domBuilder;\n            }\n            errorImpl = domBuilder;\n        }\n        var errorHandler = {};\n        var isCallback = errorImpl instanceof Function;\n        locator = locator || {};\n        function build(key) {\n            var fn = errorImpl[key];\n            if (!fn && isCallback) {\n                fn = errorImpl.length == 2 ? function (msg) {\n                    errorImpl(key, msg);\n                } : errorImpl;\n            }\n            errorHandler[key] = fn && function (msg) {\n                fn('[xmldom ' + key + ']\\t' + msg + _locator(locator));\n            } || function () {};\n        }\n        build('warning');\n        build('error');\n        build('fatalError');\n        return errorHandler;\n    }\n\n    //console.log('#\\n\\n\\n\\n\\n\\n\\n####')\n    /**\n     * +ContentHandler+ErrorHandler\n     * +LexicalHandler+EntityResolver2\n     * -DeclHandler-DTDHandler\n     *\n     * DefaultHandler:EntityResolver, DTDHandler, ContentHandler, ErrorHandler\n     * DefaultHandler2:DefaultHandler,LexicalHandler, DeclHandler, EntityResolver2\n     * @link http://www.saxproject.org/apidoc/org/xml/sax/helpers/DefaultHandler.html\n     */\n    function DOMHandler() {\n        this.cdata = false;\n    }\n    function position(locator, node) {\n        node.lineNumber = locator.lineNumber;\n        node.columnNumber = locator.columnNumber;\n    }\n    /**\n     * @see org.xml.sax.ContentHandler#startDocument\n     * @link http://www.saxproject.org/apidoc/org/xml/sax/ContentHandler.html\n     */\n    DOMHandler.prototype = {\n        startDocument: function () {\n            this.doc = new DOMImplementation().createDocument(null, null, null);\n            if (this.locator) {\n                this.doc.documentURI = this.locator.systemId;\n            }\n        },\n        startElement: function (namespaceURI, localName, qName, attrs) {\n            var doc = this.doc;\n            var el = doc.createElementNS(namespaceURI, qName || localName);\n            var len = attrs.length;\n            appendElement(this, el);\n            this.currentElement = el;\n            this.locator && position(this.locator, el);\n            for (var i = 0; i < len; i++) {\n                var namespaceURI = attrs.getURI(i);\n                var value = attrs.getValue(i);\n                var qName = attrs.getQName(i);\n                var attr = doc.createAttributeNS(namespaceURI, qName);\n                this.locator && position(attrs.getLocator(i), attr);\n                attr.value = attr.nodeValue = value;\n                el.setAttributeNode(attr);\n            }\n        },\n        endElement: function (namespaceURI, localName, qName) {\n            var current = this.currentElement;\n            current.tagName;\n            this.currentElement = current.parentNode;\n        },\n        startPrefixMapping: function (prefix, uri) {},\n        endPrefixMapping: function (prefix) {},\n        processingInstruction: function (target, data) {\n            var ins = this.doc.createProcessingInstruction(target, data);\n            this.locator && position(this.locator, ins);\n            appendElement(this, ins);\n        },\n        ignorableWhitespace: function (ch, start, length) {},\n        characters: function (chars, start, length) {\n            chars = _toString.apply(this, arguments);\n            //console.log(chars)\n            if (chars) {\n                if (this.cdata) {\n                    var charNode = this.doc.createCDATASection(chars);\n                } else {\n                    var charNode = this.doc.createTextNode(chars);\n                }\n                if (this.currentElement) {\n                    this.currentElement.appendChild(charNode);\n                } else if (/^\\s*$/.test(chars)) {\n                    this.doc.appendChild(charNode);\n                    //process xml\n                }\n\n                this.locator && position(this.locator, charNode);\n            }\n        },\n        skippedEntity: function (name) {},\n        endDocument: function () {\n            this.doc.normalize();\n        },\n        setDocumentLocator: function (locator) {\n            if (this.locator = locator) {\n                // && !('lineNumber' in locator)){\n                locator.lineNumber = 0;\n            }\n        },\n        //LexicalHandler\n        comment: function (chars, start, length) {\n            chars = _toString.apply(this, arguments);\n            var comm = this.doc.createComment(chars);\n            this.locator && position(this.locator, comm);\n            appendElement(this, comm);\n        },\n        startCDATA: function () {\n            //used in characters() methods\n            this.cdata = true;\n        },\n        endCDATA: function () {\n            this.cdata = false;\n        },\n        startDTD: function (name, publicId, systemId) {\n            var impl = this.doc.implementation;\n            if (impl && impl.createDocumentType) {\n                var dt = impl.createDocumentType(name, publicId, systemId);\n                this.locator && position(this.locator, dt);\n                appendElement(this, dt);\n                this.doc.doctype = dt;\n            }\n        },\n        /**\n         * @see org.xml.sax.ErrorHandler\n         * @link http://www.saxproject.org/apidoc/org/xml/sax/ErrorHandler.html\n         */\n        warning: function (error) {\n            console.warn('[xmldom warning]\\t' + error, _locator(this.locator));\n        },\n        error: function (error) {\n            console.error('[xmldom error]\\t' + error, _locator(this.locator));\n        },\n        fatalError: function (error) {\n            throw new ParseError(error, this.locator);\n        }\n    };\n    function _locator(l) {\n        if (l) {\n            return '\\n@' + (l.systemId || '') + '#[line:' + l.lineNumber + ',col:' + l.columnNumber + ']';\n        }\n    }\n    function _toString(chars, start, length) {\n        if (typeof chars == 'string') {\n            return chars.substr(start, length);\n        } else {\n            //java sax connect width xmldom on rhino(what about: \"? && !(chars instanceof String)\")\n            if (chars.length >= start + length || start) {\n                return new java.lang.String(chars, start, length) + '';\n            }\n            return chars;\n        }\n    }\n\n    /*\n   * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/LexicalHandler.html\n   * used method of org.xml.sax.ext.LexicalHandler:\n   *  #comment(chars, start, length)\n   *  #startCDATA()\n   *  #endCDATA()\n   *  #startDTD(name, publicId, systemId)\n   *\n   *\n   * IGNORED method of org.xml.sax.ext.LexicalHandler:\n   *  #endDTD()\n   *  #startEntity(name)\n   *  #endEntity(name)\n   *\n   *\n   * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/DeclHandler.html\n   * IGNORED method of org.xml.sax.ext.DeclHandler\n   * \t#attributeDecl(eName, aName, type, mode, value)\n   *  #elementDecl(name, model)\n   *  #externalEntityDecl(name, publicId, systemId)\n   *  #internalEntityDecl(name, value)\n   * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/EntityResolver2.html\n   * IGNORED method of org.xml.sax.EntityResolver2\n   *  #resolveEntity(String name,String publicId,String baseURI,String systemId)\n   *  #resolveEntity(publicId, systemId)\n   *  #getExternalSubset(name, baseURI)\n   * @link http://www.saxproject.org/apidoc/org/xml/sax/DTDHandler.html\n   * IGNORED method of org.xml.sax.DTDHandler\n   *  #notationDecl(name, publicId, systemId) {};\n   *  #unparsedEntityDecl(name, publicId, systemId, notationName) {};\n   */\n    \"endDTD,startEntity,endEntity,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,resolveEntity,getExternalSubset,notationDecl,unparsedEntityDecl\".replace(/\\w+/g, function (key) {\n        DOMHandler.prototype[key] = function () {\n            return null;\n        };\n    });\n\n    /* Private static helpers treated below as private instance methods, so don't need to add these to the public API; we might use a Relator to also get rid of non-standard public properties */\n    function appendElement(hander, node) {\n        if (!hander.currentElement) {\n            hander.doc.appendChild(node);\n        } else {\n            hander.currentElement.appendChild(node);\n        }\n    } //appendChild and setAttributeNS are preformance key\n\n    var __DOMHandler = DOMHandler;\n    var normalizeLineEndings_1 = normalizeLineEndings;\n    var DOMParser_1 = DOMParser$1;\n    var domParser = {\n        __DOMHandler: __DOMHandler,\n        normalizeLineEndings: normalizeLineEndings_1,\n        DOMParser: DOMParser_1\n    };\n\n    var DOMParser = domParser.DOMParser;\n\n    /*! @name mpd-parser @version 1.3.0 @license Apache-2.0 */\n    const isObject = obj => {\n        return !!obj && typeof obj === 'object';\n    };\n    const merge$1 = (...objects) => {\n        return objects.reduce((result, source) => {\n            if (typeof source !== 'object') {\n                return result;\n            }\n            Object.keys(source).forEach(key => {\n                if (Array.isArray(result[key]) && Array.isArray(source[key])) {\n                    result[key] = result[key].concat(source[key]);\n                } else if (isObject(result[key]) && isObject(source[key])) {\n                    result[key] = merge$1(result[key], source[key]);\n                } else {\n                    result[key] = source[key];\n                }\n            });\n            return result;\n        }, {});\n    };\n    const values = o => Object.keys(o).map(k => o[k]);\n    const range = (start, end) => {\n        const result = [];\n        for (let i = start; i < end; i++) {\n            result.push(i);\n        }\n        return result;\n    };\n    const flatten = lists => lists.reduce((x, y) => x.concat(y), []);\n    const from = list => {\n        if (!list.length) {\n            return [];\n        }\n        const result = [];\n        for (let i = 0; i < list.length; i++) {\n            result.push(list[i]);\n        }\n        return result;\n    };\n    const findIndexes = (l, key) => l.reduce((a, e, i) => {\n        if (e[key]) {\n            a.push(i);\n        }\n        return a;\n    }, []);\n    /**\n     * Returns a union of the included lists provided each element can be identified by a key.\n     *\n     * @param {Array} list - list of lists to get the union of\n     * @param {Function} keyFunction - the function to use as a key for each element\n     *\n     * @return {Array} the union of the arrays\n     */\n\n    const union = (lists, keyFunction) => {\n        return values(lists.reduce((acc, list) => {\n            list.forEach(el => {\n                acc[keyFunction(el)] = el;\n            });\n            return acc;\n        }, {}));\n    };\n    var errors = {\n        INVALID_NUMBER_OF_PERIOD: 'INVALID_NUMBER_OF_PERIOD',\n        INVALID_NUMBER_OF_CONTENT_STEERING: 'INVALID_NUMBER_OF_CONTENT_STEERING',\n        DASH_EMPTY_MANIFEST: 'DASH_EMPTY_MANIFEST',\n        DASH_INVALID_XML: 'DASH_INVALID_XML',\n        NO_BASE_URL: 'NO_BASE_URL',\n        MISSING_SEGMENT_INFORMATION: 'MISSING_SEGMENT_INFORMATION',\n        SEGMENT_TIME_UNSPECIFIED: 'SEGMENT_TIME_UNSPECIFIED',\n        UNSUPPORTED_UTC_TIMING_SCHEME: 'UNSUPPORTED_UTC_TIMING_SCHEME'\n    };\n\n    /**\n     * @typedef {Object} SingleUri\n     * @property {string} uri - relative location of segment\n     * @property {string} resolvedUri - resolved location of segment\n     * @property {Object} byterange - Object containing information on how to make byte range\n     *   requests following byte-range-spec per RFC2616.\n     * @property {String} byterange.length - length of range request\n     * @property {String} byterange.offset - byte offset of range request\n     *\n     * @see https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.1\n     */\n\n    /**\n     * Converts a URLType node (5.3.9.2.3 Table 13) to a segment object\n     * that conforms to how m3u8-parser is structured\n     *\n     * @see https://github.com/videojs/m3u8-parser\n     *\n     * @param {string} baseUrl - baseUrl provided by <BaseUrl> nodes\n     * @param {string} source - source url for segment\n     * @param {string} range - optional range used for range calls,\n     *   follows  RFC 2616, Clause 14.35.1\n     * @return {SingleUri} full segment information transformed into a format similar\n     *   to m3u8-parser\n     */\n\n    const urlTypeToSegment = ({\n                                  baseUrl = '',\n                                  source = '',\n                                  range = '',\n                                  indexRange = ''\n                              }) => {\n        const segment = {\n            uri: source,\n            resolvedUri: resolveUrl$1(baseUrl || '', source)\n        };\n        if (range || indexRange) {\n            const rangeStr = range ? range : indexRange;\n            const ranges = rangeStr.split('-'); // default to parsing this as a BigInt if possible\n\n            let startRange = window.BigInt ? window.BigInt(ranges[0]) : parseInt(ranges[0], 10);\n            let endRange = window.BigInt ? window.BigInt(ranges[1]) : parseInt(ranges[1], 10); // convert back to a number if less than MAX_SAFE_INTEGER\n\n            if (startRange < Number.MAX_SAFE_INTEGER && typeof startRange === 'bigint') {\n                startRange = Number(startRange);\n            }\n            if (endRange < Number.MAX_SAFE_INTEGER && typeof endRange === 'bigint') {\n                endRange = Number(endRange);\n            }\n            let length;\n            if (typeof endRange === 'bigint' || typeof startRange === 'bigint') {\n                length = window.BigInt(endRange) - window.BigInt(startRange) + window.BigInt(1);\n            } else {\n                length = endRange - startRange + 1;\n            }\n            if (typeof length === 'bigint' && length < Number.MAX_SAFE_INTEGER) {\n                length = Number(length);\n            } // byterange should be inclusive according to\n            // RFC 2616, Clause 14.35.1\n\n            segment.byterange = {\n                length,\n                offset: startRange\n            };\n        }\n        return segment;\n    };\n    const byteRangeToString = byterange => {\n        // `endRange` is one less than `offset + length` because the HTTP range\n        // header uses inclusive ranges\n        let endRange;\n        if (typeof byterange.offset === 'bigint' || typeof byterange.length === 'bigint') {\n            endRange = window.BigInt(byterange.offset) + window.BigInt(byterange.length) - window.BigInt(1);\n        } else {\n            endRange = byterange.offset + byterange.length - 1;\n        }\n        return `${byterange.offset}-${endRange}`;\n    };\n\n    /**\n     * parse the end number attribue that can be a string\n     * number, or undefined.\n     *\n     * @param {string|number|undefined} endNumber\n     *        The end number attribute.\n     *\n     * @return {number|null}\n     *          The result of parsing the end number.\n     */\n\n    const parseEndNumber = endNumber => {\n        if (endNumber && typeof endNumber !== 'number') {\n            endNumber = parseInt(endNumber, 10);\n        }\n        if (isNaN(endNumber)) {\n            return null;\n        }\n        return endNumber;\n    };\n    /**\n     * Functions for calculating the range of available segments in static and dynamic\n     * manifests.\n     */\n\n    const segmentRange = {\n        /**\n         * Returns the entire range of available segments for a static MPD\n         *\n         * @param {Object} attributes\n         *        Inheritied MPD attributes\n         * @return {{ start: number, end: number }}\n         *         The start and end numbers for available segments\n         */\n        static(attributes) {\n            const {\n                duration,\n                timescale = 1,\n                sourceDuration,\n                periodDuration\n            } = attributes;\n            const endNumber = parseEndNumber(attributes.endNumber);\n            const segmentDuration = duration / timescale;\n            if (typeof endNumber === 'number') {\n                return {\n                    start: 0,\n                    end: endNumber\n                };\n            }\n            if (typeof periodDuration === 'number') {\n                return {\n                    start: 0,\n                    end: periodDuration / segmentDuration\n                };\n            }\n            return {\n                start: 0,\n                end: sourceDuration / segmentDuration\n            };\n        },\n        /**\n         * Returns the current live window range of available segments for a dynamic MPD\n         *\n         * @param {Object} attributes\n         *        Inheritied MPD attributes\n         * @return {{ start: number, end: number }}\n         *         The start and end numbers for available segments\n         */\n        dynamic(attributes) {\n            const {\n                NOW,\n                clientOffset,\n                availabilityStartTime,\n                timescale = 1,\n                duration,\n                periodStart = 0,\n                minimumUpdatePeriod = 0,\n                timeShiftBufferDepth = Infinity\n            } = attributes;\n            const endNumber = parseEndNumber(attributes.endNumber); // clientOffset is passed in at the top level of mpd-parser and is an offset calculated\n            // after retrieving UTC server time.\n\n            const now = (NOW + clientOffset) / 1000; // WC stands for Wall Clock.\n            // Convert the period start time to EPOCH.\n\n            const periodStartWC = availabilityStartTime + periodStart; // Period end in EPOCH is manifest's retrieval time + time until next update.\n\n            const periodEndWC = now + minimumUpdatePeriod;\n            const periodDuration = periodEndWC - periodStartWC;\n            const segmentCount = Math.ceil(periodDuration * timescale / duration);\n            const availableStart = Math.floor((now - periodStartWC - timeShiftBufferDepth) * timescale / duration);\n            const availableEnd = Math.floor((now - periodStartWC) * timescale / duration);\n            return {\n                start: Math.max(0, availableStart),\n                end: typeof endNumber === 'number' ? endNumber : Math.min(segmentCount, availableEnd)\n            };\n        }\n    };\n    /**\n     * Maps a range of numbers to objects with information needed to build the corresponding\n     * segment list\n     *\n     * @name toSegmentsCallback\n     * @function\n     * @param {number} number\n     *        Number of the segment\n     * @param {number} index\n     *        Index of the number in the range list\n     * @return {{ number: Number, duration: Number, timeline: Number, time: Number }}\n     *         Object with segment timing and duration info\n     */\n\n    /**\n     * Returns a callback for Array.prototype.map for mapping a range of numbers to\n     * information needed to build the segment list.\n     *\n     * @param {Object} attributes\n     *        Inherited MPD attributes\n     * @return {toSegmentsCallback}\n     *         Callback map function\n     */\n\n    const toSegments = attributes => number => {\n        const {\n            duration,\n            timescale = 1,\n            periodStart,\n            startNumber = 1\n        } = attributes;\n        return {\n            number: startNumber + number,\n            duration: duration / timescale,\n            timeline: periodStart,\n            time: number * duration\n        };\n    };\n    /**\n     * Returns a list of objects containing segment timing and duration info used for\n     * building the list of segments. This uses the @duration attribute specified\n     * in the MPD manifest to derive the range of segments.\n     *\n     * @param {Object} attributes\n     *        Inherited MPD attributes\n     * @return {{number: number, duration: number, time: number, timeline: number}[]}\n     *         List of Objects with segment timing and duration info\n     */\n\n    const parseByDuration = attributes => {\n        const {\n            type,\n            duration,\n            timescale = 1,\n            periodDuration,\n            sourceDuration\n        } = attributes;\n        const {\n            start,\n            end\n        } = segmentRange[type](attributes);\n        const segments = range(start, end).map(toSegments(attributes));\n        if (type === 'static') {\n            const index = segments.length - 1; // section is either a period or the full source\n\n            const sectionDuration = typeof periodDuration === 'number' ? periodDuration : sourceDuration; // final segment may be less than full segment duration\n\n            segments[index].duration = sectionDuration - duration / timescale * index;\n        }\n        return segments;\n    };\n\n    /**\n     * Translates SegmentBase into a set of segments.\n     * (DASH SPEC Section 5.3.9.3.2) contains a set of <SegmentURL> nodes.  Each\n     * node should be translated into segment.\n     *\n     * @param {Object} attributes\n     *   Object containing all inherited attributes from parent elements with attribute\n     *   names as keys\n     * @return {Object.<Array>} list of segments\n     */\n\n    const segmentsFromBase = attributes => {\n        const {\n            baseUrl,\n            initialization = {},\n            sourceDuration,\n            indexRange = '',\n            periodStart,\n            presentationTime,\n            number = 0,\n            duration\n        } = attributes; // base url is required for SegmentBase to work, per spec (Section 5.3.9.2.1)\n\n        if (!baseUrl) {\n            throw new Error(errors.NO_BASE_URL);\n        }\n        const initSegment = urlTypeToSegment({\n            baseUrl,\n            source: initialization.sourceURL,\n            range: initialization.range\n        });\n        const segment = urlTypeToSegment({\n            baseUrl,\n            source: baseUrl,\n            indexRange\n        });\n        segment.map = initSegment; // If there is a duration, use it, otherwise use the given duration of the source\n        // (since SegmentBase is only for one total segment)\n\n        if (duration) {\n            const segmentTimeInfo = parseByDuration(attributes);\n            if (segmentTimeInfo.length) {\n                segment.duration = segmentTimeInfo[0].duration;\n                segment.timeline = segmentTimeInfo[0].timeline;\n            }\n        } else if (sourceDuration) {\n            segment.duration = sourceDuration;\n            segment.timeline = periodStart;\n        } // If presentation time is provided, these segments are being generated by SIDX\n        // references, and should use the time provided. For the general case of SegmentBase,\n        // there should only be one segment in the period, so its presentation time is the same\n        // as its period start.\n\n        segment.presentationTime = presentationTime || periodStart;\n        segment.number = number;\n        return [segment];\n    };\n    /**\n     * Given a playlist, a sidx box, and a baseUrl, update the segment list of the playlist\n     * according to the sidx information given.\n     *\n     * playlist.sidx has metadadata about the sidx where-as the sidx param\n     * is the parsed sidx box itself.\n     *\n     * @param {Object} playlist the playlist to update the sidx information for\n     * @param {Object} sidx the parsed sidx box\n     * @return {Object} the playlist object with the updated sidx information\n     */\n\n    const addSidxSegmentsToPlaylist$1 = (playlist, sidx, baseUrl) => {\n        // Retain init segment information\n        const initSegment = playlist.sidx.map ? playlist.sidx.map : null; // Retain source duration from initial main manifest parsing\n\n        const sourceDuration = playlist.sidx.duration; // Retain source timeline\n\n        const timeline = playlist.timeline || 0;\n        const sidxByteRange = playlist.sidx.byterange;\n        const sidxEnd = sidxByteRange.offset + sidxByteRange.length; // Retain timescale of the parsed sidx\n\n        const timescale = sidx.timescale; // referenceType 1 refers to other sidx boxes\n\n        const mediaReferences = sidx.references.filter(r => r.referenceType !== 1);\n        const segments = [];\n        const type = playlist.endList ? 'static' : 'dynamic';\n        const periodStart = playlist.sidx.timeline;\n        let presentationTime = periodStart;\n        let number = playlist.mediaSequence || 0; // firstOffset is the offset from the end of the sidx box\n\n        let startIndex; // eslint-disable-next-line\n\n        if (typeof sidx.firstOffset === 'bigint') {\n            startIndex = window.BigInt(sidxEnd) + sidx.firstOffset;\n        } else {\n            startIndex = sidxEnd + sidx.firstOffset;\n        }\n        for (let i = 0; i < mediaReferences.length; i++) {\n            const reference = sidx.references[i]; // size of the referenced (sub)segment\n\n            const size = reference.referencedSize; // duration of the referenced (sub)segment, in  the  timescale\n            // this will be converted to seconds when generating segments\n\n            const duration = reference.subsegmentDuration; // should be an inclusive range\n\n            let endIndex; // eslint-disable-next-line\n\n            if (typeof startIndex === 'bigint') {\n                endIndex = startIndex + window.BigInt(size) - window.BigInt(1);\n            } else {\n                endIndex = startIndex + size - 1;\n            }\n            const indexRange = `${startIndex}-${endIndex}`;\n            const attributes = {\n                baseUrl,\n                timescale,\n                timeline,\n                periodStart,\n                presentationTime,\n                number,\n                duration,\n                sourceDuration,\n                indexRange,\n                type\n            };\n            const segment = segmentsFromBase(attributes)[0];\n            if (initSegment) {\n                segment.map = initSegment;\n            }\n            segments.push(segment);\n            if (typeof startIndex === 'bigint') {\n                startIndex += window.BigInt(size);\n            } else {\n                startIndex += size;\n            }\n            presentationTime += duration / timescale;\n            number++;\n        }\n        playlist.segments = segments;\n        return playlist;\n    };\n    const SUPPORTED_MEDIA_TYPES = ['AUDIO', 'SUBTITLES']; // allow one 60fps frame as leniency (arbitrarily chosen)\n\n    const TIME_FUDGE = 1 / 60;\n    /**\n     * Given a list of timelineStarts, combines, dedupes, and sorts them.\n     *\n     * @param {TimelineStart[]} timelineStarts - list of timeline starts\n     *\n     * @return {TimelineStart[]} the combined and deduped timeline starts\n     */\n\n    const getUniqueTimelineStarts = timelineStarts => {\n        return union(timelineStarts, ({\n                                          timeline\n                                      }) => timeline).sort((a, b) => a.timeline > b.timeline ? 1 : -1);\n    };\n    /**\n     * Finds the playlist with the matching NAME attribute.\n     *\n     * @param {Array} playlists - playlists to search through\n     * @param {string} name - the NAME attribute to search for\n     *\n     * @return {Object|null} the matching playlist object, or null\n     */\n\n    const findPlaylistWithName = (playlists, name) => {\n        for (let i = 0; i < playlists.length; i++) {\n            if (playlists[i].attributes.NAME === name) {\n                return playlists[i];\n            }\n        }\n        return null;\n    };\n    /**\n     * Gets a flattened array of media group playlists.\n     *\n     * @param {Object} manifest - the main manifest object\n     *\n     * @return {Array} the media group playlists\n     */\n\n    const getMediaGroupPlaylists = manifest => {\n        let mediaGroupPlaylists = [];\n        forEachMediaGroup$1(manifest, SUPPORTED_MEDIA_TYPES, (properties, type, group, label) => {\n            mediaGroupPlaylists = mediaGroupPlaylists.concat(properties.playlists || []);\n        });\n        return mediaGroupPlaylists;\n    };\n    /**\n     * Updates the playlist's media sequence numbers.\n     *\n     * @param {Object} config - options object\n     * @param {Object} config.playlist - the playlist to update\n     * @param {number} config.mediaSequence - the mediaSequence number to start with\n     */\n\n    const updateMediaSequenceForPlaylist = ({\n                                                playlist,\n                                                mediaSequence\n                                            }) => {\n        playlist.mediaSequence = mediaSequence;\n        playlist.segments.forEach((segment, index) => {\n            segment.number = playlist.mediaSequence + index;\n        });\n    };\n    /**\n     * Updates the media and discontinuity sequence numbers of newPlaylists given oldPlaylists\n     * and a complete list of timeline starts.\n     *\n     * If no matching playlist is found, only the discontinuity sequence number of the playlist\n     * will be updated.\n     *\n     * Since early available timelines are not supported, at least one segment must be present.\n     *\n     * @param {Object} config - options object\n     * @param {Object[]} oldPlaylists - the old playlists to use as a reference\n     * @param {Object[]} newPlaylists - the new playlists to update\n     * @param {Object} timelineStarts - all timelineStarts seen in the stream to this point\n     */\n\n    const updateSequenceNumbers = ({\n                                       oldPlaylists,\n                                       newPlaylists,\n                                       timelineStarts\n                                   }) => {\n        newPlaylists.forEach(playlist => {\n            playlist.discontinuitySequence = timelineStarts.findIndex(function ({\n                                                                                    timeline\n                                                                                }) {\n                return timeline === playlist.timeline;\n            }); // Playlists NAMEs come from DASH Representation IDs, which are mandatory\n            // (see ISO_23009-1-2012 5.3.5.2).\n            //\n            // If the same Representation existed in a prior Period, it will retain the same NAME.\n\n            const oldPlaylist = findPlaylistWithName(oldPlaylists, playlist.attributes.NAME);\n            if (!oldPlaylist) {\n                // Since this is a new playlist, the media sequence values can start from 0 without\n                // consequence.\n                return;\n            } // TODO better support for live SIDX\n            //\n            // As of this writing, mpd-parser does not support multiperiod SIDX (in live or VOD).\n            // This is evident by a playlist only having a single SIDX reference. In a multiperiod\n            // playlist there would need to be multiple SIDX references. In addition, live SIDX is\n            // not supported when the SIDX properties change on refreshes.\n            //\n            // In the future, if support needs to be added, the merging logic here can be called\n            // after SIDX references are resolved. For now, exit early to prevent exceptions being\n            // thrown due to undefined references.\n\n            if (playlist.sidx) {\n                return;\n            } // Since we don't yet support early available timelines, we don't need to support\n            // playlists with no segments.\n\n            const firstNewSegment = playlist.segments[0];\n            const oldMatchingSegmentIndex = oldPlaylist.segments.findIndex(function (oldSegment) {\n                return Math.abs(oldSegment.presentationTime - firstNewSegment.presentationTime) < TIME_FUDGE;\n            }); // No matching segment from the old playlist means the entire playlist was refreshed.\n            // In this case the media sequence should account for this update, and the new segments\n            // should be marked as discontinuous from the prior content, since the last prior\n            // timeline was removed.\n\n            if (oldMatchingSegmentIndex === -1) {\n                updateMediaSequenceForPlaylist({\n                    playlist,\n                    mediaSequence: oldPlaylist.mediaSequence + oldPlaylist.segments.length\n                });\n                playlist.segments[0].discontinuity = true;\n                playlist.discontinuityStarts.unshift(0); // No matching segment does not necessarily mean there's missing content.\n                //\n                // If the new playlist's timeline is the same as the last seen segment's timeline,\n                // then a discontinuity can be added to identify that there's potentially missing\n                // content. If there's no missing content, the discontinuity should still be rather\n                // harmless. It's possible that if segment durations are accurate enough, that the\n                // existence of a gap can be determined using the presentation times and durations,\n                // but if the segment timing info is off, it may introduce more problems than simply\n                // adding the discontinuity.\n                //\n                // If the new playlist's timeline is different from the last seen segment's timeline,\n                // then a discontinuity can be added to identify that this is the first seen segment\n                // of a new timeline. However, the logic at the start of this function that\n                // determined the disconinuity sequence by timeline index is now off by one (the\n                // discontinuity of the newest timeline hasn't yet fallen off the manifest...since\n                // we added it), so the disconinuity sequence must be decremented.\n                //\n                // A period may also have a duration of zero, so the case of no segments is handled\n                // here even though we don't yet support early available periods.\n\n                if (!oldPlaylist.segments.length && playlist.timeline > oldPlaylist.timeline || oldPlaylist.segments.length && playlist.timeline > oldPlaylist.segments[oldPlaylist.segments.length - 1].timeline) {\n                    playlist.discontinuitySequence--;\n                }\n                return;\n            } // If the first segment matched with a prior segment on a discontinuity (it's matching\n            // on the first segment of a period), then the discontinuitySequence shouldn't be the\n            // timeline's matching one, but instead should be the one prior, and the first segment\n            // of the new manifest should be marked with a discontinuity.\n            //\n            // The reason for this special case is that discontinuity sequence shows how many\n            // discontinuities have fallen off of the playlist, and discontinuities are marked on\n            // the first segment of a new \"timeline.\" Because of this, while DASH will retain that\n            // Period while the \"timeline\" exists, HLS keeps track of it via the discontinuity\n            // sequence, and that first segment is an indicator, but can be removed before that\n            // timeline is gone.\n\n            const oldMatchingSegment = oldPlaylist.segments[oldMatchingSegmentIndex];\n            if (oldMatchingSegment.discontinuity && !firstNewSegment.discontinuity) {\n                firstNewSegment.discontinuity = true;\n                playlist.discontinuityStarts.unshift(0);\n                playlist.discontinuitySequence--;\n            }\n            updateMediaSequenceForPlaylist({\n                playlist,\n                mediaSequence: oldPlaylist.segments[oldMatchingSegmentIndex].number\n            });\n        });\n    };\n    /**\n     * Given an old parsed manifest object and a new parsed manifest object, updates the\n     * sequence and timing values within the new manifest to ensure that it lines up with the\n     * old.\n     *\n     * @param {Array} oldManifest - the old main manifest object\n     * @param {Array} newManifest - the new main manifest object\n     *\n     * @return {Object} the updated new manifest object\n     */\n\n    const positionManifestOnTimeline = ({\n                                            oldManifest,\n                                            newManifest\n                                        }) => {\n        // Starting from v4.1.2 of the IOP, section 4.4.3.3 states:\n        //\n        // \"MPD@availabilityStartTime and Period@start shall not be changed over MPD updates.\"\n        //\n        // This was added from https://github.com/Dash-Industry-Forum/DASH-IF-IOP/issues/160\n        //\n        // Because of this change, and the difficulty of supporting periods with changing start\n        // times, periods with changing start times are not supported. This makes the logic much\n        // simpler, since periods with the same start time can be considerred the same period\n        // across refreshes.\n        //\n        // To give an example as to the difficulty of handling periods where the start time may\n        // change, if a single period manifest is refreshed with another manifest with a single\n        // period, and both the start and end times are increased, then the only way to determine\n        // if it's a new period or an old one that has changed is to look through the segments of\n        // each playlist and determine the presentation time bounds to find a match. In addition,\n        // if the period start changed to exceed the old period end, then there would be no\n        // match, and it would not be possible to determine whether the refreshed period is a new\n        // one or the old one.\n        const oldPlaylists = oldManifest.playlists.concat(getMediaGroupPlaylists(oldManifest));\n        const newPlaylists = newManifest.playlists.concat(getMediaGroupPlaylists(newManifest)); // Save all seen timelineStarts to the new manifest. Although this potentially means that\n        // there's a \"memory leak\" in that it will never stop growing, in reality, only a couple\n        // of properties are saved for each seen Period. Even long running live streams won't\n        // generate too many Periods, unless the stream is watched for decades. In the future,\n        // this can be optimized by mapping to discontinuity sequence numbers for each timeline,\n        // but it may not become an issue, and the additional info can be useful for debugging.\n\n        newManifest.timelineStarts = getUniqueTimelineStarts([oldManifest.timelineStarts, newManifest.timelineStarts]);\n        updateSequenceNumbers({\n            oldPlaylists,\n            newPlaylists,\n            timelineStarts: newManifest.timelineStarts\n        });\n        return newManifest;\n    };\n    const generateSidxKey = sidx => sidx && sidx.uri + '-' + byteRangeToString(sidx.byterange);\n    const mergeDiscontiguousPlaylists = playlists => {\n        // Break out playlists into groups based on their baseUrl\n        const playlistsByBaseUrl = playlists.reduce(function (acc, cur) {\n            if (!acc[cur.attributes.baseUrl]) {\n                acc[cur.attributes.baseUrl] = [];\n            }\n            acc[cur.attributes.baseUrl].push(cur);\n            return acc;\n        }, {});\n        let allPlaylists = [];\n        Object.values(playlistsByBaseUrl).forEach(playlistGroup => {\n            const mergedPlaylists = values(playlistGroup.reduce((acc, playlist) => {\n                // assuming playlist IDs are the same across periods\n                // TODO: handle multiperiod where representation sets are not the same\n                // across periods\n                const name = playlist.attributes.id + (playlist.attributes.lang || '');\n                if (!acc[name]) {\n                    // First Period\n                    acc[name] = playlist;\n                    acc[name].attributes.timelineStarts = [];\n                } else {\n                    // Subsequent Periods\n                    if (playlist.segments) {\n                        // first segment of subsequent periods signal a discontinuity\n                        if (playlist.segments[0]) {\n                            playlist.segments[0].discontinuity = true;\n                        }\n                        acc[name].segments.push(...playlist.segments);\n                    } // bubble up contentProtection, this assumes all DRM content\n                    // has the same contentProtection\n\n                    if (playlist.attributes.contentProtection) {\n                        acc[name].attributes.contentProtection = playlist.attributes.contentProtection;\n                    }\n                }\n                acc[name].attributes.timelineStarts.push({\n                    // Although they represent the same number, it's important to have both to make it\n                    // compatible with HLS potentially having a similar attribute.\n                    start: playlist.attributes.periodStart,\n                    timeline: playlist.attributes.periodStart\n                });\n                return acc;\n            }, {}));\n            allPlaylists = allPlaylists.concat(mergedPlaylists);\n        });\n        return allPlaylists.map(playlist => {\n            playlist.discontinuityStarts = findIndexes(playlist.segments || [], 'discontinuity');\n            return playlist;\n        });\n    };\n    const addSidxSegmentsToPlaylist = (playlist, sidxMapping) => {\n        const sidxKey = generateSidxKey(playlist.sidx);\n        const sidxMatch = sidxKey && sidxMapping[sidxKey] && sidxMapping[sidxKey].sidx;\n        if (sidxMatch) {\n            addSidxSegmentsToPlaylist$1(playlist, sidxMatch, playlist.sidx.resolvedUri);\n        }\n        return playlist;\n    };\n    const addSidxSegmentsToPlaylists = (playlists, sidxMapping = {}) => {\n        if (!Object.keys(sidxMapping).length) {\n            return playlists;\n        }\n        for (const i in playlists) {\n            playlists[i] = addSidxSegmentsToPlaylist(playlists[i], sidxMapping);\n        }\n        return playlists;\n    };\n    const formatAudioPlaylist = ({\n                                     attributes,\n                                     segments,\n                                     sidx,\n                                     mediaSequence,\n                                     discontinuitySequence,\n                                     discontinuityStarts\n                                 }, isAudioOnly) => {\n        const playlist = {\n            attributes: {\n                NAME: attributes.id,\n                BANDWIDTH: attributes.bandwidth,\n                CODECS: attributes.codecs,\n                ['PROGRAM-ID']: 1\n            },\n            uri: '',\n            endList: attributes.type === 'static',\n            timeline: attributes.periodStart,\n            resolvedUri: attributes.baseUrl || '',\n            targetDuration: attributes.duration,\n            discontinuitySequence,\n            discontinuityStarts,\n            timelineStarts: attributes.timelineStarts,\n            mediaSequence,\n            segments\n        };\n        if (attributes.contentProtection) {\n            playlist.contentProtection = attributes.contentProtection;\n        }\n        if (attributes.serviceLocation) {\n            playlist.attributes.serviceLocation = attributes.serviceLocation;\n        }\n        if (sidx) {\n            playlist.sidx = sidx;\n        }\n        if (isAudioOnly) {\n            playlist.attributes.AUDIO = 'audio';\n            playlist.attributes.SUBTITLES = 'subs';\n        }\n        return playlist;\n    };\n    const formatVttPlaylist = ({\n                                   attributes,\n                                   segments,\n                                   mediaSequence,\n                                   discontinuityStarts,\n                                   discontinuitySequence\n                               }) => {\n        if (typeof segments === 'undefined') {\n            // vtt tracks may use single file in BaseURL\n            segments = [{\n                uri: attributes.baseUrl,\n                timeline: attributes.periodStart,\n                resolvedUri: attributes.baseUrl || '',\n                duration: attributes.sourceDuration,\n                number: 0\n            }]; // targetDuration should be the same duration as the only segment\n\n            attributes.duration = attributes.sourceDuration;\n        }\n        const m3u8Attributes = {\n            NAME: attributes.id,\n            BANDWIDTH: attributes.bandwidth,\n            ['PROGRAM-ID']: 1\n        };\n        if (attributes.codecs) {\n            m3u8Attributes.CODECS = attributes.codecs;\n        }\n        const vttPlaylist = {\n            attributes: m3u8Attributes,\n            uri: '',\n            endList: attributes.type === 'static',\n            timeline: attributes.periodStart,\n            resolvedUri: attributes.baseUrl || '',\n            targetDuration: attributes.duration,\n            timelineStarts: attributes.timelineStarts,\n            discontinuityStarts,\n            discontinuitySequence,\n            mediaSequence,\n            segments\n        };\n        if (attributes.serviceLocation) {\n            vttPlaylist.attributes.serviceLocation = attributes.serviceLocation;\n        }\n        return vttPlaylist;\n    };\n    const organizeAudioPlaylists = (playlists, sidxMapping = {}, isAudioOnly = false) => {\n        let mainPlaylist;\n        const formattedPlaylists = playlists.reduce((a, playlist) => {\n            const role = playlist.attributes.role && playlist.attributes.role.value || '';\n            const language = playlist.attributes.lang || '';\n            let label = playlist.attributes.label || 'main';\n            if (language && !playlist.attributes.label) {\n                const roleLabel = role ? ` (${role})` : '';\n                label = `${playlist.attributes.lang}${roleLabel}`;\n            }\n            if (!a[label]) {\n                a[label] = {\n                    language,\n                    autoselect: true,\n                    default: role === 'main',\n                    playlists: [],\n                    uri: ''\n                };\n            }\n            const formatted = addSidxSegmentsToPlaylist(formatAudioPlaylist(playlist, isAudioOnly), sidxMapping);\n            a[label].playlists.push(formatted);\n            if (typeof mainPlaylist === 'undefined' && role === 'main') {\n                mainPlaylist = playlist;\n                mainPlaylist.default = true;\n            }\n            return a;\n        }, {}); // if no playlists have role \"main\", mark the first as main\n\n        if (!mainPlaylist) {\n            const firstLabel = Object.keys(formattedPlaylists)[0];\n            formattedPlaylists[firstLabel].default = true;\n        }\n        return formattedPlaylists;\n    };\n    const organizeVttPlaylists = (playlists, sidxMapping = {}) => {\n        return playlists.reduce((a, playlist) => {\n            const label = playlist.attributes.label || playlist.attributes.lang || 'text';\n            if (!a[label]) {\n                a[label] = {\n                    language: label,\n                    default: false,\n                    autoselect: false,\n                    playlists: [],\n                    uri: ''\n                };\n            }\n            a[label].playlists.push(addSidxSegmentsToPlaylist(formatVttPlaylist(playlist), sidxMapping));\n            return a;\n        }, {});\n    };\n    const organizeCaptionServices = captionServices => captionServices.reduce((svcObj, svc) => {\n        if (!svc) {\n            return svcObj;\n        }\n        svc.forEach(service => {\n            const {\n                channel,\n                language\n            } = service;\n            svcObj[language] = {\n                autoselect: false,\n                default: false,\n                instreamId: channel,\n                language\n            };\n            if (service.hasOwnProperty('aspectRatio')) {\n                svcObj[language].aspectRatio = service.aspectRatio;\n            }\n            if (service.hasOwnProperty('easyReader')) {\n                svcObj[language].easyReader = service.easyReader;\n            }\n            if (service.hasOwnProperty('3D')) {\n                svcObj[language]['3D'] = service['3D'];\n            }\n        });\n        return svcObj;\n    }, {});\n    const formatVideoPlaylist = ({\n                                     attributes,\n                                     segments,\n                                     sidx,\n                                     discontinuityStarts\n                                 }) => {\n        const playlist = {\n            attributes: {\n                NAME: attributes.id,\n                AUDIO: 'audio',\n                SUBTITLES: 'subs',\n                RESOLUTION: {\n                    width: attributes.width,\n                    height: attributes.height\n                },\n                CODECS: attributes.codecs,\n                BANDWIDTH: attributes.bandwidth,\n                ['PROGRAM-ID']: 1\n            },\n            uri: '',\n            endList: attributes.type === 'static',\n            timeline: attributes.periodStart,\n            resolvedUri: attributes.baseUrl || '',\n            targetDuration: attributes.duration,\n            discontinuityStarts,\n            timelineStarts: attributes.timelineStarts,\n            segments\n        };\n        if (attributes.frameRate) {\n            playlist.attributes['FRAME-RATE'] = attributes.frameRate;\n        }\n        if (attributes.contentProtection) {\n            playlist.contentProtection = attributes.contentProtection;\n        }\n        if (attributes.serviceLocation) {\n            playlist.attributes.serviceLocation = attributes.serviceLocation;\n        }\n        if (sidx) {\n            playlist.sidx = sidx;\n        }\n        return playlist;\n    };\n    const videoOnly = ({\n                           attributes\n                       }) => attributes.mimeType === 'video/mp4' || attributes.mimeType === 'video/webm' || attributes.contentType === 'video';\n    const audioOnly = ({\n                           attributes\n                       }) => attributes.mimeType === 'audio/mp4' || attributes.mimeType === 'audio/webm' || attributes.contentType === 'audio';\n    const vttOnly = ({\n                         attributes\n                     }) => attributes.mimeType === 'text/vtt' || attributes.contentType === 'text';\n    /**\n     * Contains start and timeline properties denoting a timeline start. For DASH, these will\n     * be the same number.\n     *\n     * @typedef {Object} TimelineStart\n     * @property {number} start - the start time of the timeline\n     * @property {number} timeline - the timeline number\n     */\n\n    /**\n     * Adds appropriate media and discontinuity sequence values to the segments and playlists.\n     *\n     * Throughout mpd-parser, the `number` attribute is used in relation to `startNumber`, a\n     * DASH specific attribute used in constructing segment URI's from templates. However, from\n     * an HLS perspective, the `number` attribute on a segment would be its `mediaSequence`\n     * value, which should start at the original media sequence value (or 0) and increment by 1\n     * for each segment thereafter. Since DASH's `startNumber` values are independent per\n     * period, it doesn't make sense to use it for `number`. Instead, assume everything starts\n     * from a 0 mediaSequence value and increment from there.\n     *\n     * Note that VHS currently doesn't use the `number` property, but it can be helpful for\n     * debugging and making sense of the manifest.\n     *\n     * For live playlists, to account for values increasing in manifests when periods are\n     * removed on refreshes, merging logic should be used to update the numbers to their\n     * appropriate values (to ensure they're sequential and increasing).\n     *\n     * @param {Object[]} playlists - the playlists to update\n     * @param {TimelineStart[]} timelineStarts - the timeline starts for the manifest\n     */\n\n    const addMediaSequenceValues = (playlists, timelineStarts) => {\n        // increment all segments sequentially\n        playlists.forEach(playlist => {\n            playlist.mediaSequence = 0;\n            playlist.discontinuitySequence = timelineStarts.findIndex(function ({\n                                                                                    timeline\n                                                                                }) {\n                return timeline === playlist.timeline;\n            });\n            if (!playlist.segments) {\n                return;\n            }\n            playlist.segments.forEach((segment, index) => {\n                segment.number = index;\n            });\n        });\n    };\n    /**\n     * Given a media group object, flattens all playlists within the media group into a single\n     * array.\n     *\n     * @param {Object} mediaGroupObject - the media group object\n     *\n     * @return {Object[]}\n     *         The media group playlists\n     */\n\n    const flattenMediaGroupPlaylists = mediaGroupObject => {\n        if (!mediaGroupObject) {\n            return [];\n        }\n        return Object.keys(mediaGroupObject).reduce((acc, label) => {\n            const labelContents = mediaGroupObject[label];\n            return acc.concat(labelContents.playlists);\n        }, []);\n    };\n    const toM3u8 = ({\n                        dashPlaylists,\n                        locations,\n                        contentSteering,\n                        sidxMapping = {},\n                        previousManifest,\n                        eventStream\n                    }) => {\n        if (!dashPlaylists.length) {\n            return {};\n        } // grab all main manifest attributes\n\n        const {\n            sourceDuration: duration,\n            type,\n            suggestedPresentationDelay,\n            minimumUpdatePeriod\n        } = dashPlaylists[0].attributes;\n        const videoPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(videoOnly)).map(formatVideoPlaylist);\n        const audioPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(audioOnly));\n        const vttPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(vttOnly));\n        const captions = dashPlaylists.map(playlist => playlist.attributes.captionServices).filter(Boolean);\n        const manifest = {\n            allowCache: true,\n            discontinuityStarts: [],\n            segments: [],\n            endList: true,\n            mediaGroups: {\n                AUDIO: {},\n                VIDEO: {},\n                ['CLOSED-CAPTIONS']: {},\n                SUBTITLES: {}\n            },\n            uri: '',\n            duration,\n            playlists: addSidxSegmentsToPlaylists(videoPlaylists, sidxMapping)\n        };\n        if (minimumUpdatePeriod >= 0) {\n            manifest.minimumUpdatePeriod = minimumUpdatePeriod * 1000;\n        }\n        if (locations) {\n            manifest.locations = locations;\n        }\n        if (contentSteering) {\n            manifest.contentSteering = contentSteering;\n        }\n        if (type === 'dynamic') {\n            manifest.suggestedPresentationDelay = suggestedPresentationDelay;\n        }\n        if (eventStream && eventStream.length > 0) {\n            manifest.eventStream = eventStream;\n        }\n        const isAudioOnly = manifest.playlists.length === 0;\n        const organizedAudioGroup = audioPlaylists.length ? organizeAudioPlaylists(audioPlaylists, sidxMapping, isAudioOnly) : null;\n        const organizedVttGroup = vttPlaylists.length ? organizeVttPlaylists(vttPlaylists, sidxMapping) : null;\n        const formattedPlaylists = videoPlaylists.concat(flattenMediaGroupPlaylists(organizedAudioGroup), flattenMediaGroupPlaylists(organizedVttGroup));\n        const playlistTimelineStarts = formattedPlaylists.map(({\n                                                                   timelineStarts\n                                                               }) => timelineStarts);\n        manifest.timelineStarts = getUniqueTimelineStarts(playlistTimelineStarts);\n        addMediaSequenceValues(formattedPlaylists, manifest.timelineStarts);\n        if (organizedAudioGroup) {\n            manifest.mediaGroups.AUDIO.audio = organizedAudioGroup;\n        }\n        if (organizedVttGroup) {\n            manifest.mediaGroups.SUBTITLES.subs = organizedVttGroup;\n        }\n        if (captions.length) {\n            manifest.mediaGroups['CLOSED-CAPTIONS'].cc = organizeCaptionServices(captions);\n        }\n        if (previousManifest) {\n            return positionManifestOnTimeline({\n                oldManifest: previousManifest,\n                newManifest: manifest\n            });\n        }\n        return manifest;\n    };\n\n    /**\n     * Calculates the R (repetition) value for a live stream (for the final segment\n     * in a manifest where the r value is negative 1)\n     *\n     * @param {Object} attributes\n     *        Object containing all inherited attributes from parent elements with attribute\n     *        names as keys\n     * @param {number} time\n     *        current time (typically the total time up until the final segment)\n     * @param {number} duration\n     *        duration property for the given <S />\n     *\n     * @return {number}\n     *        R value to reach the end of the given period\n     */\n    const getLiveRValue = (attributes, time, duration) => {\n        const {\n            NOW,\n            clientOffset,\n            availabilityStartTime,\n            timescale = 1,\n            periodStart = 0,\n            minimumUpdatePeriod = 0\n        } = attributes;\n        const now = (NOW + clientOffset) / 1000;\n        const periodStartWC = availabilityStartTime + periodStart;\n        const periodEndWC = now + minimumUpdatePeriod;\n        const periodDuration = periodEndWC - periodStartWC;\n        return Math.ceil((periodDuration * timescale - time) / duration);\n    };\n    /**\n     * Uses information provided by SegmentTemplate.SegmentTimeline to determine segment\n     * timing and duration\n     *\n     * @param {Object} attributes\n     *        Object containing all inherited attributes from parent elements with attribute\n     *        names as keys\n     * @param {Object[]} segmentTimeline\n     *        List of objects representing the attributes of each S element contained within\n     *\n     * @return {{number: number, duration: number, time: number, timeline: number}[]}\n     *         List of Objects with segment timing and duration info\n     */\n\n    const parseByTimeline = (attributes, segmentTimeline) => {\n        const {\n            type,\n            minimumUpdatePeriod = 0,\n            media = '',\n            sourceDuration,\n            timescale = 1,\n            startNumber = 1,\n            periodStart: timeline\n        } = attributes;\n        const segments = [];\n        let time = -1;\n        for (let sIndex = 0; sIndex < segmentTimeline.length; sIndex++) {\n            const S = segmentTimeline[sIndex];\n            const duration = S.d;\n            const repeat = S.r || 0;\n            const segmentTime = S.t || 0;\n            if (time < 0) {\n                // first segment\n                time = segmentTime;\n            }\n            if (segmentTime && segmentTime > time) {\n                // discontinuity\n                // TODO: How to handle this type of discontinuity\n                // timeline++ here would treat it like HLS discontuity and content would\n                // get appended without gap\n                // E.G.\n                //  <S t=\"0\" d=\"1\" />\n                //  <S d=\"1\" />\n                //  <S d=\"1\" />\n                //  <S t=\"5\" d=\"1\" />\n                // would have $Time$ values of [0, 1, 2, 5]\n                // should this be appened at time positions [0, 1, 2, 3],(#EXT-X-DISCONTINUITY)\n                // or [0, 1, 2, gap, gap, 5]? (#EXT-X-GAP)\n                // does the value of sourceDuration consider this when calculating arbitrary\n                // negative @r repeat value?\n                // E.G. Same elements as above with this added at the end\n                //  <S d=\"1\" r=\"-1\" />\n                //  with a sourceDuration of 10\n                // Would the 2 gaps be included in the time duration calculations resulting in\n                // 8 segments with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9] or 10 segments\n                // with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9, 10, 11] ?\n                time = segmentTime;\n            }\n            let count;\n            if (repeat < 0) {\n                const nextS = sIndex + 1;\n                if (nextS === segmentTimeline.length) {\n                    // last segment\n                    if (type === 'dynamic' && minimumUpdatePeriod > 0 && media.indexOf('$Number$') > 0) {\n                        count = getLiveRValue(attributes, time, duration);\n                    } else {\n                        // TODO: This may be incorrect depending on conclusion of TODO above\n                        count = (sourceDuration * timescale - time) / duration;\n                    }\n                } else {\n                    count = (segmentTimeline[nextS].t - time) / duration;\n                }\n            } else {\n                count = repeat + 1;\n            }\n            const end = startNumber + segments.length + count;\n            let number = startNumber + segments.length;\n            while (number < end) {\n                segments.push({\n                    number,\n                    duration: duration / timescale,\n                    time,\n                    timeline\n                });\n                time += duration;\n                number++;\n            }\n        }\n        return segments;\n    };\n    const identifierPattern = /\\$([A-z]*)(?:(%0)([0-9]+)d)?\\$/g;\n    /**\n     * Replaces template identifiers with corresponding values. To be used as the callback\n     * for String.prototype.replace\n     *\n     * @name replaceCallback\n     * @function\n     * @param {string} match\n     *        Entire match of identifier\n     * @param {string} identifier\n     *        Name of matched identifier\n     * @param {string} format\n     *        Format tag string. Its presence indicates that padding is expected\n     * @param {string} width\n     *        Desired length of the replaced value. Values less than this width shall be left\n     *        zero padded\n     * @return {string}\n     *         Replacement for the matched identifier\n     */\n\n    /**\n     * Returns a function to be used as a callback for String.prototype.replace to replace\n     * template identifiers\n     *\n     * @param {Obect} values\n     *        Object containing values that shall be used to replace known identifiers\n     * @param {number} values.RepresentationID\n     *        Value of the Representation@id attribute\n     * @param {number} values.Number\n     *        Number of the corresponding segment\n     * @param {number} values.Bandwidth\n     *        Value of the Representation@bandwidth attribute.\n     * @param {number} values.Time\n     *        Timestamp value of the corresponding segment\n     * @return {replaceCallback}\n     *         Callback to be used with String.prototype.replace to replace identifiers\n     */\n\n    const identifierReplacement = values => (match, identifier, format, width) => {\n        if (match === '$$') {\n            // escape sequence\n            return '$';\n        }\n        if (typeof values[identifier] === 'undefined') {\n            return match;\n        }\n        const value = '' + values[identifier];\n        if (identifier === 'RepresentationID') {\n            // Format tag shall not be present with RepresentationID\n            return value;\n        }\n        if (!format) {\n            width = 1;\n        } else {\n            width = parseInt(width, 10);\n        }\n        if (value.length >= width) {\n            return value;\n        }\n        return `${new Array(width - value.length + 1).join('0')}${value}`;\n    };\n    /**\n     * Constructs a segment url from a template string\n     *\n     * @param {string} url\n     *        Template string to construct url from\n     * @param {Obect} values\n     *        Object containing values that shall be used to replace known identifiers\n     * @param {number} values.RepresentationID\n     *        Value of the Representation@id attribute\n     * @param {number} values.Number\n     *        Number of the corresponding segment\n     * @param {number} values.Bandwidth\n     *        Value of the Representation@bandwidth attribute.\n     * @param {number} values.Time\n     *        Timestamp value of the corresponding segment\n     * @return {string}\n     *         Segment url with identifiers replaced\n     */\n\n    const constructTemplateUrl = (url, values) => url.replace(identifierPattern, identifierReplacement(values));\n    /**\n     * Generates a list of objects containing timing and duration information about each\n     * segment needed to generate segment uris and the complete segment object\n     *\n     * @param {Object} attributes\n     *        Object containing all inherited attributes from parent elements with attribute\n     *        names as keys\n     * @param {Object[]|undefined} segmentTimeline\n     *        List of objects representing the attributes of each S element contained within\n     *        the SegmentTimeline element\n     * @return {{number: number, duration: number, time: number, timeline: number}[]}\n     *         List of Objects with segment timing and duration info\n     */\n\n    const parseTemplateInfo = (attributes, segmentTimeline) => {\n        if (!attributes.duration && !segmentTimeline) {\n            // if neither @duration or SegmentTimeline are present, then there shall be exactly\n            // one media segment\n            return [{\n                number: attributes.startNumber || 1,\n                duration: attributes.sourceDuration,\n                time: 0,\n                timeline: attributes.periodStart\n            }];\n        }\n        if (attributes.duration) {\n            return parseByDuration(attributes);\n        }\n        return parseByTimeline(attributes, segmentTimeline);\n    };\n    /**\n     * Generates a list of segments using information provided by the SegmentTemplate element\n     *\n     * @param {Object} attributes\n     *        Object containing all inherited attributes from parent elements with attribute\n     *        names as keys\n     * @param {Object[]|undefined} segmentTimeline\n     *        List of objects representing the attributes of each S element contained within\n     *        the SegmentTimeline element\n     * @return {Object[]}\n     *         List of segment objects\n     */\n\n    const segmentsFromTemplate = (attributes, segmentTimeline) => {\n        const templateValues = {\n            RepresentationID: attributes.id,\n            Bandwidth: attributes.bandwidth || 0\n        };\n        const {\n            initialization = {\n                sourceURL: '',\n                range: ''\n            }\n        } = attributes;\n        const mapSegment = urlTypeToSegment({\n            baseUrl: attributes.baseUrl,\n            source: constructTemplateUrl(initialization.sourceURL, templateValues),\n            range: initialization.range\n        });\n        const segments = parseTemplateInfo(attributes, segmentTimeline);\n        return segments.map(segment => {\n            templateValues.Number = segment.number;\n            templateValues.Time = segment.time;\n            const uri = constructTemplateUrl(attributes.media || '', templateValues); // See DASH spec section 5.3.9.2.2\n            // - if timescale isn't present on any level, default to 1.\n\n            const timescale = attributes.timescale || 1; // - if presentationTimeOffset isn't present on any level, default to 0\n\n            const presentationTimeOffset = attributes.presentationTimeOffset || 0;\n            const presentationTime =\n                // Even if the @t attribute is not specified for the segment, segment.time is\n                // calculated in mpd-parser prior to this, so it's assumed to be available.\n                attributes.periodStart + (segment.time - presentationTimeOffset) / timescale;\n            const map = {\n                uri,\n                timeline: segment.timeline,\n                duration: segment.duration,\n                resolvedUri: resolveUrl$1(attributes.baseUrl || '', uri),\n                map: mapSegment,\n                number: segment.number,\n                presentationTime\n            };\n            return map;\n        });\n    };\n\n    /**\n     * Converts a <SegmentUrl> (of type URLType from the DASH spec 5.3.9.2 Table 14)\n     * to an object that matches the output of a segment in videojs/mpd-parser\n     *\n     * @param {Object} attributes\n     *   Object containing all inherited attributes from parent elements with attribute\n     *   names as keys\n     * @param {Object} segmentUrl\n     *   <SegmentURL> node to translate into a segment object\n     * @return {Object} translated segment object\n     */\n\n    const SegmentURLToSegmentObject = (attributes, segmentUrl) => {\n        const {\n            baseUrl,\n            initialization = {}\n        } = attributes;\n        const initSegment = urlTypeToSegment({\n            baseUrl,\n            source: initialization.sourceURL,\n            range: initialization.range\n        });\n        const segment = urlTypeToSegment({\n            baseUrl,\n            source: segmentUrl.media,\n            range: segmentUrl.mediaRange\n        });\n        segment.map = initSegment;\n        return segment;\n    };\n    /**\n     * Generates a list of segments using information provided by the SegmentList element\n     * SegmentList (DASH SPEC Section 5.3.9.3.2) contains a set of <SegmentURL> nodes.  Each\n     * node should be translated into segment.\n     *\n     * @param {Object} attributes\n     *   Object containing all inherited attributes from parent elements with attribute\n     *   names as keys\n     * @param {Object[]|undefined} segmentTimeline\n     *        List of objects representing the attributes of each S element contained within\n     *        the SegmentTimeline element\n     * @return {Object.<Array>} list of segments\n     */\n\n    const segmentsFromList = (attributes, segmentTimeline) => {\n        const {\n            duration,\n            segmentUrls = [],\n            periodStart\n        } = attributes; // Per spec (5.3.9.2.1) no way to determine segment duration OR\n        // if both SegmentTimeline and @duration are defined, it is outside of spec.\n\n        if (!duration && !segmentTimeline || duration && segmentTimeline) {\n            throw new Error(errors.SEGMENT_TIME_UNSPECIFIED);\n        }\n        const segmentUrlMap = segmentUrls.map(segmentUrlObject => SegmentURLToSegmentObject(attributes, segmentUrlObject));\n        let segmentTimeInfo;\n        if (duration) {\n            segmentTimeInfo = parseByDuration(attributes);\n        }\n        if (segmentTimeline) {\n            segmentTimeInfo = parseByTimeline(attributes, segmentTimeline);\n        }\n        const segments = segmentTimeInfo.map((segmentTime, index) => {\n            if (segmentUrlMap[index]) {\n                const segment = segmentUrlMap[index]; // See DASH spec section 5.3.9.2.2\n                // - if timescale isn't present on any level, default to 1.\n\n                const timescale = attributes.timescale || 1; // - if presentationTimeOffset isn't present on any level, default to 0\n\n                const presentationTimeOffset = attributes.presentationTimeOffset || 0;\n                segment.timeline = segmentTime.timeline;\n                segment.duration = segmentTime.duration;\n                segment.number = segmentTime.number;\n                segment.presentationTime = periodStart + (segmentTime.time - presentationTimeOffset) / timescale;\n                return segment;\n            } // Since we're mapping we should get rid of any blank segments (in case\n            // the given SegmentTimeline is handling for more elements than we have\n            // SegmentURLs for).\n        }).filter(segment => segment);\n        return segments;\n    };\n    const generateSegments = ({\n                                  attributes,\n                                  segmentInfo\n                              }) => {\n        let segmentAttributes;\n        let segmentsFn;\n        if (segmentInfo.template) {\n            segmentsFn = segmentsFromTemplate;\n            segmentAttributes = merge$1(attributes, segmentInfo.template);\n        } else if (segmentInfo.base) {\n            segmentsFn = segmentsFromBase;\n            segmentAttributes = merge$1(attributes, segmentInfo.base);\n        } else if (segmentInfo.list) {\n            segmentsFn = segmentsFromList;\n            segmentAttributes = merge$1(attributes, segmentInfo.list);\n        }\n        const segmentsInfo = {\n            attributes\n        };\n        if (!segmentsFn) {\n            return segmentsInfo;\n        }\n        const segments = segmentsFn(segmentAttributes, segmentInfo.segmentTimeline); // The @duration attribute will be used to determin the playlist's targetDuration which\n        // must be in seconds. Since we've generated the segment list, we no longer need\n        // @duration to be in @timescale units, so we can convert it here.\n\n        if (segmentAttributes.duration) {\n            const {\n                duration,\n                timescale = 1\n            } = segmentAttributes;\n            segmentAttributes.duration = duration / timescale;\n        } else if (segments.length) {\n            // if there is no @duration attribute, use the largest segment duration as\n            // as target duration\n            segmentAttributes.duration = segments.reduce((max, segment) => {\n                return Math.max(max, Math.ceil(segment.duration));\n            }, 0);\n        } else {\n            segmentAttributes.duration = 0;\n        }\n        segmentsInfo.attributes = segmentAttributes;\n        segmentsInfo.segments = segments; // This is a sidx box without actual segment information\n\n        if (segmentInfo.base && segmentAttributes.indexRange) {\n            segmentsInfo.sidx = segments[0];\n            segmentsInfo.segments = [];\n        }\n        return segmentsInfo;\n    };\n    const toPlaylists = representations => representations.map(generateSegments);\n    const findChildren = (element, name) => from(element.childNodes).filter(({\n                                                                                 tagName\n                                                                             }) => tagName === name);\n    const getContent = element => element.textContent.trim();\n\n    /**\n     * Converts the provided string that may contain a division operation to a number.\n     *\n     * @param {string} value - the provided string value\n     *\n     * @return {number} the parsed string value\n     */\n    const parseDivisionValue = value => {\n        return parseFloat(value.split('/').reduce((prev, current) => prev / current));\n    };\n    const parseDuration = str => {\n        const SECONDS_IN_YEAR = 365 * 24 * 60 * 60;\n        const SECONDS_IN_MONTH = 30 * 24 * 60 * 60;\n        const SECONDS_IN_DAY = 24 * 60 * 60;\n        const SECONDS_IN_HOUR = 60 * 60;\n        const SECONDS_IN_MIN = 60; // P10Y10M10DT10H10M10.1S\n\n        const durationRegex = /P(?:(\\d*)Y)?(?:(\\d*)M)?(?:(\\d*)D)?(?:T(?:(\\d*)H)?(?:(\\d*)M)?(?:([\\d.]*)S)?)?/;\n        const match = durationRegex.exec(str);\n        if (!match) {\n            return 0;\n        }\n        const [year, month, day, hour, minute, second] = match.slice(1);\n        return parseFloat(year || 0) * SECONDS_IN_YEAR + parseFloat(month || 0) * SECONDS_IN_MONTH + parseFloat(day || 0) * SECONDS_IN_DAY + parseFloat(hour || 0) * SECONDS_IN_HOUR + parseFloat(minute || 0) * SECONDS_IN_MIN + parseFloat(second || 0);\n    };\n    const parseDate = str => {\n        // Date format without timezone according to ISO 8601\n        // YYY-MM-DDThh:mm:ss.ssssss\n        const dateRegex = /^\\d+-\\d+-\\d+T\\d+:\\d+:\\d+(\\.\\d+)?$/; // If the date string does not specifiy a timezone, we must specifiy UTC. This is\n        // expressed by ending with 'Z'\n\n        if (dateRegex.test(str)) {\n            str += 'Z';\n        }\n        return Date.parse(str);\n    };\n    const parsers = {\n        /**\n         * Specifies the duration of the entire Media Presentation. Format is a duration string\n         * as specified in ISO 8601\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The duration in seconds\n         */\n        mediaPresentationDuration(value) {\n            return parseDuration(value);\n        },\n        /**\n         * Specifies the Segment availability start time for all Segments referred to in this\n         * MPD. For a dynamic manifest, it specifies the anchor for the earliest availability\n         * time. Format is a date string as specified in ISO 8601\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The date as seconds from unix epoch\n         */\n        availabilityStartTime(value) {\n            return parseDate(value) / 1000;\n        },\n        /**\n         * Specifies the smallest period between potential changes to the MPD. Format is a\n         * duration string as specified in ISO 8601\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The duration in seconds\n         */\n        minimumUpdatePeriod(value) {\n            return parseDuration(value);\n        },\n        /**\n         * Specifies the suggested presentation delay. Format is a\n         * duration string as specified in ISO 8601\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The duration in seconds\n         */\n        suggestedPresentationDelay(value) {\n            return parseDuration(value);\n        },\n        /**\n         * specifices the type of mpd. Can be either \"static\" or \"dynamic\"\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         *\n         * @return {string}\n         *         The type as a string\n         */\n        type(value) {\n            return value;\n        },\n        /**\n         * Specifies the duration of the smallest time shifting buffer for any Representation\n         * in the MPD. Format is a duration string as specified in ISO 8601\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The duration in seconds\n         */\n        timeShiftBufferDepth(value) {\n            return parseDuration(value);\n        },\n        /**\n         * Specifies the PeriodStart time of the Period relative to the availabilityStarttime.\n         * Format is a duration string as specified in ISO 8601\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The duration in seconds\n         */\n        start(value) {\n            return parseDuration(value);\n        },\n        /**\n         * Specifies the width of the visual presentation\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed width\n         */\n        width(value) {\n            return parseInt(value, 10);\n        },\n        /**\n         * Specifies the height of the visual presentation\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed height\n         */\n        height(value) {\n            return parseInt(value, 10);\n        },\n        /**\n         * Specifies the bitrate of the representation\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed bandwidth\n         */\n        bandwidth(value) {\n            return parseInt(value, 10);\n        },\n        /**\n         * Specifies the frame rate of the representation\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed frame rate\n         */\n        frameRate(value) {\n            return parseDivisionValue(value);\n        },\n        /**\n         * Specifies the number of the first Media Segment in this Representation in the Period\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed number\n         */\n        startNumber(value) {\n            return parseInt(value, 10);\n        },\n        /**\n         * Specifies the timescale in units per seconds\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed timescale\n         */\n        timescale(value) {\n            return parseInt(value, 10);\n        },\n        /**\n         * Specifies the presentationTimeOffset.\n         *\n         * @param {string} value\n         *        value of the attribute as a string\n         *\n         * @return {number}\n         *         The parsed presentationTimeOffset\n         */\n        presentationTimeOffset(value) {\n            return parseInt(value, 10);\n        },\n        /**\n         * Specifies the constant approximate Segment duration\n         * NOTE: The <Period> element also contains an @duration attribute. This duration\n         *       specifies the duration of the Period. This attribute is currently not\n         *       supported by the rest of the parser, however we still check for it to prevent\n         *       errors.\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed duration\n         */\n        duration(value) {\n            const parsedValue = parseInt(value, 10);\n            if (isNaN(parsedValue)) {\n                return parseDuration(value);\n            }\n            return parsedValue;\n        },\n        /**\n         * Specifies the Segment duration, in units of the value of the @timescale.\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed duration\n         */\n        d(value) {\n            return parseInt(value, 10);\n        },\n        /**\n         * Specifies the MPD start time, in @timescale units, the first Segment in the series\n         * starts relative to the beginning of the Period\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed time\n         */\n        t(value) {\n            return parseInt(value, 10);\n        },\n        /**\n         * Specifies the repeat count of the number of following contiguous Segments with the\n         * same duration expressed by the value of @d\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {number}\n         *         The parsed number\n         */\n        r(value) {\n            return parseInt(value, 10);\n        },\n        /**\n         * Specifies the presentationTime.\n         *\n         * @param {string} value\n         *        value of the attribute as a string\n         *\n         * @return {number}\n         *         The parsed presentationTime\n         */\n        presentationTime(value) {\n            return parseInt(value, 10);\n        },\n        /**\n         * Default parser for all other attributes. Acts as a no-op and just returns the value\n         * as a string\n         *\n         * @param {string} value\n         *        value of attribute as a string\n         * @return {string}\n         *         Unparsed value\n         */\n        DEFAULT(value) {\n            return value;\n        }\n    };\n    /**\n     * Gets all the attributes and values of the provided node, parses attributes with known\n     * types, and returns an object with attribute names mapped to values.\n     *\n     * @param {Node} el\n     *        The node to parse attributes from\n     * @return {Object}\n     *         Object with all attributes of el parsed\n     */\n\n    const parseAttributes = el => {\n        if (!(el && el.attributes)) {\n            return {};\n        }\n        return from(el.attributes).reduce((a, e) => {\n            const parseFn = parsers[e.name] || parsers.DEFAULT;\n            a[e.name] = parseFn(e.value);\n            return a;\n        }, {});\n    };\n    const keySystemsMap = {\n        'urn:uuid:1077efec-c0b2-4d02-ace3-3c1e52e2fb4b': 'org.w3.clearkey',\n        'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed': 'com.widevine.alpha',\n        'urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95': 'com.microsoft.playready',\n        'urn:uuid:f239e769-efa3-4850-9c16-a903c6932efb': 'com.adobe.primetime',\n        // ISO_IEC 23009-1_2022 5.8.5.2.2 The mp4 Protection Scheme\n        'urn:mpeg:dash:mp4protection:2011': 'mp4protection'\n    };\n    /**\n     * Builds a list of urls that is the product of the reference urls and BaseURL values\n     *\n     * @param {Object[]} references\n     *        List of objects containing the reference URL as well as its attributes\n     * @param {Node[]} baseUrlElements\n     *        List of BaseURL nodes from the mpd\n     * @return {Object[]}\n     *         List of objects with resolved urls and attributes\n     */\n\n    const buildBaseUrls = (references, baseUrlElements) => {\n        if (!baseUrlElements.length) {\n            return references;\n        }\n        return flatten(references.map(function (reference) {\n            return baseUrlElements.map(function (baseUrlElement) {\n                const initialBaseUrl = getContent(baseUrlElement);\n                const resolvedBaseUrl = resolveUrl$1(reference.baseUrl, initialBaseUrl);\n                const finalBaseUrl = merge$1(parseAttributes(baseUrlElement), {\n                    baseUrl: resolvedBaseUrl\n                }); // If the URL is resolved, we want to get the serviceLocation from the reference\n                // assuming there is no serviceLocation on the initialBaseUrl\n\n                if (resolvedBaseUrl !== initialBaseUrl && !finalBaseUrl.serviceLocation && reference.serviceLocation) {\n                    finalBaseUrl.serviceLocation = reference.serviceLocation;\n                }\n                return finalBaseUrl;\n            });\n        }));\n    };\n    /**\n     * Contains all Segment information for its containing AdaptationSet\n     *\n     * @typedef {Object} SegmentInformation\n     * @property {Object|undefined} template\n     *           Contains the attributes for the SegmentTemplate node\n     * @property {Object[]|undefined} segmentTimeline\n     *           Contains a list of atrributes for each S node within the SegmentTimeline node\n     * @property {Object|undefined} list\n     *           Contains the attributes for the SegmentList node\n     * @property {Object|undefined} base\n     *           Contains the attributes for the SegmentBase node\n     */\n\n    /**\n     * Returns all available Segment information contained within the AdaptationSet node\n     *\n     * @param {Node} adaptationSet\n     *        The AdaptationSet node to get Segment information from\n     * @return {SegmentInformation}\n     *         The Segment information contained within the provided AdaptationSet\n     */\n\n    const getSegmentInformation = adaptationSet => {\n        const segmentTemplate = findChildren(adaptationSet, 'SegmentTemplate')[0];\n        const segmentList = findChildren(adaptationSet, 'SegmentList')[0];\n        const segmentUrls = segmentList && findChildren(segmentList, 'SegmentURL').map(s => merge$1({\n            tag: 'SegmentURL'\n        }, parseAttributes(s)));\n        const segmentBase = findChildren(adaptationSet, 'SegmentBase')[0];\n        const segmentTimelineParentNode = segmentList || segmentTemplate;\n        const segmentTimeline = segmentTimelineParentNode && findChildren(segmentTimelineParentNode, 'SegmentTimeline')[0];\n        const segmentInitializationParentNode = segmentList || segmentBase || segmentTemplate;\n        const segmentInitialization = segmentInitializationParentNode && findChildren(segmentInitializationParentNode, 'Initialization')[0]; // SegmentTemplate is handled slightly differently, since it can have both\n        // @initialization and an <Initialization> node.  @initialization can be templated,\n        // while the node can have a url and range specified.  If the <SegmentTemplate> has\n        // both @initialization and an <Initialization> subelement we opt to override with\n        // the node, as this interaction is not defined in the spec.\n\n        const template = segmentTemplate && parseAttributes(segmentTemplate);\n        if (template && segmentInitialization) {\n            template.initialization = segmentInitialization && parseAttributes(segmentInitialization);\n        } else if (template && template.initialization) {\n            // If it is @initialization we convert it to an object since this is the format that\n            // later functions will rely on for the initialization segment.  This is only valid\n            // for <SegmentTemplate>\n            template.initialization = {\n                sourceURL: template.initialization\n            };\n        }\n        const segmentInfo = {\n            template,\n            segmentTimeline: segmentTimeline && findChildren(segmentTimeline, 'S').map(s => parseAttributes(s)),\n            list: segmentList && merge$1(parseAttributes(segmentList), {\n                segmentUrls,\n                initialization: parseAttributes(segmentInitialization)\n            }),\n            base: segmentBase && merge$1(parseAttributes(segmentBase), {\n                initialization: parseAttributes(segmentInitialization)\n            })\n        };\n        Object.keys(segmentInfo).forEach(key => {\n            if (!segmentInfo[key]) {\n                delete segmentInfo[key];\n            }\n        });\n        return segmentInfo;\n    };\n    /**\n     * Contains Segment information and attributes needed to construct a Playlist object\n     * from a Representation\n     *\n     * @typedef {Object} RepresentationInformation\n     * @property {SegmentInformation} segmentInfo\n     *           Segment information for this Representation\n     * @property {Object} attributes\n     *           Inherited attributes for this Representation\n     */\n\n    /**\n     * Maps a Representation node to an object containing Segment information and attributes\n     *\n     * @name inheritBaseUrlsCallback\n     * @function\n     * @param {Node} representation\n     *        Representation node from the mpd\n     * @return {RepresentationInformation}\n     *         Representation information needed to construct a Playlist object\n     */\n\n    /**\n     * Returns a callback for Array.prototype.map for mapping Representation nodes to\n     * Segment information and attributes using inherited BaseURL nodes.\n     *\n     * @param {Object} adaptationSetAttributes\n     *        Contains attributes inherited by the AdaptationSet\n     * @param {Object[]} adaptationSetBaseUrls\n     *        List of objects containing resolved base URLs and attributes\n     *        inherited by the AdaptationSet\n     * @param {SegmentInformation} adaptationSetSegmentInfo\n     *        Contains Segment information for the AdaptationSet\n     * @return {inheritBaseUrlsCallback}\n     *         Callback map function\n     */\n\n    const inheritBaseUrls = (adaptationSetAttributes, adaptationSetBaseUrls, adaptationSetSegmentInfo) => representation => {\n        const repBaseUrlElements = findChildren(representation, 'BaseURL');\n        const repBaseUrls = buildBaseUrls(adaptationSetBaseUrls, repBaseUrlElements);\n        const attributes = merge$1(adaptationSetAttributes, parseAttributes(representation));\n        const representationSegmentInfo = getSegmentInformation(representation);\n        return repBaseUrls.map(baseUrl => {\n            return {\n                segmentInfo: merge$1(adaptationSetSegmentInfo, representationSegmentInfo),\n                attributes: merge$1(attributes, baseUrl)\n            };\n        });\n    };\n    /**\n     * Tranforms a series of content protection nodes to\n     * an object containing pssh data by key system\n     *\n     * @param {Node[]} contentProtectionNodes\n     *        Content protection nodes\n     * @return {Object}\n     *        Object containing pssh data by key system\n     */\n\n    const generateKeySystemInformation = contentProtectionNodes => {\n        return contentProtectionNodes.reduce((acc, node) => {\n            const attributes = parseAttributes(node); // Although it could be argued that according to the UUID RFC spec the UUID string (a-f chars) should be generated\n            // as a lowercase string it also mentions it should be treated as case-insensitive on input. Since the key system\n            // UUIDs in the keySystemsMap are hardcoded as lowercase in the codebase there isn't any reason not to do\n            // .toLowerCase() on the input UUID string from the manifest (at least I could not think of one).\n\n            if (attributes.schemeIdUri) {\n                attributes.schemeIdUri = attributes.schemeIdUri.toLowerCase();\n            }\n            const keySystem = keySystemsMap[attributes.schemeIdUri];\n            if (keySystem) {\n                acc[keySystem] = {\n                    attributes\n                };\n                const psshNode = findChildren(node, 'cenc:pssh')[0];\n                if (psshNode) {\n                    const pssh = getContent(psshNode);\n                    acc[keySystem].pssh = pssh && decodeB64ToUint8Array(pssh);\n                }\n            }\n            return acc;\n        }, {});\n    }; // defined in ANSI_SCTE 214-1 2016\n\n    const parseCaptionServiceMetadata = service => {\n        // 608 captions\n        if (service.schemeIdUri === 'urn:scte:dash:cc:cea-608:2015') {\n            const values = typeof service.value !== 'string' ? [] : service.value.split(';');\n            return values.map(value => {\n                let channel;\n                let language; // default language to value\n\n                language = value;\n                if (/^CC\\d=/.test(value)) {\n                    [channel, language] = value.split('=');\n                } else if (/^CC\\d$/.test(value)) {\n                    channel = value;\n                }\n                return {\n                    channel,\n                    language\n                };\n            });\n        } else if (service.schemeIdUri === 'urn:scte:dash:cc:cea-708:2015') {\n            const values = typeof service.value !== 'string' ? [] : service.value.split(';');\n            return values.map(value => {\n                const flags = {\n                    // service or channel number 1-63\n                    'channel': undefined,\n                    // language is a 3ALPHA per ISO 639.2/B\n                    // field is required\n                    'language': undefined,\n                    // BIT 1/0 or ?\n                    // default value is 1, meaning 16:9 aspect ratio, 0 is 4:3, ? is unknown\n                    'aspectRatio': 1,\n                    // BIT 1/0\n                    // easy reader flag indicated the text is tailed to the needs of beginning readers\n                    // default 0, or off\n                    'easyReader': 0,\n                    // BIT 1/0\n                    // If 3d metadata is present (CEA-708.1) then 1\n                    // default 0\n                    '3D': 0\n                };\n                if (/=/.test(value)) {\n                    const [channel, opts = ''] = value.split('=');\n                    flags.channel = channel;\n                    flags.language = value;\n                    opts.split(',').forEach(opt => {\n                        const [name, val] = opt.split(':');\n                        if (name === 'lang') {\n                            flags.language = val; // er for easyReadery\n                        } else if (name === 'er') {\n                            flags.easyReader = Number(val); // war for wide aspect ratio\n                        } else if (name === 'war') {\n                            flags.aspectRatio = Number(val);\n                        } else if (name === '3D') {\n                            flags['3D'] = Number(val);\n                        }\n                    });\n                } else {\n                    flags.language = value;\n                }\n                if (flags.channel) {\n                    flags.channel = 'SERVICE' + flags.channel;\n                }\n                return flags;\n            });\n        }\n    };\n    /**\n     * A map callback that will parse all event stream data for a collection of periods\n     * DASH ISO_IEC_23009 5.10.2.2\n     * https://dashif-documents.azurewebsites.net/Events/master/event.html#mpd-event-timing\n     *\n     * @param {PeriodInformation} period object containing necessary period information\n     * @return a collection of parsed eventstream event objects\n     */\n\n    const toEventStream = period => {\n        // get and flatten all EventStreams tags and parse attributes and children\n        return flatten(findChildren(period.node, 'EventStream').map(eventStream => {\n            const eventStreamAttributes = parseAttributes(eventStream);\n            const schemeIdUri = eventStreamAttributes.schemeIdUri; // find all Events per EventStream tag and map to return objects\n\n            return findChildren(eventStream, 'Event').map(event => {\n                const eventAttributes = parseAttributes(event);\n                const presentationTime = eventAttributes.presentationTime || 0;\n                const timescale = eventStreamAttributes.timescale || 1;\n                const duration = eventAttributes.duration || 0;\n                const start = presentationTime / timescale + period.attributes.start;\n                return {\n                    schemeIdUri,\n                    value: eventStreamAttributes.value,\n                    id: eventAttributes.id,\n                    start,\n                    end: start + duration / timescale,\n                    messageData: getContent(event) || eventAttributes.messageData,\n                    contentEncoding: eventStreamAttributes.contentEncoding,\n                    presentationTimeOffset: eventStreamAttributes.presentationTimeOffset || 0\n                };\n            });\n        }));\n    };\n    /**\n     * Maps an AdaptationSet node to a list of Representation information objects\n     *\n     * @name toRepresentationsCallback\n     * @function\n     * @param {Node} adaptationSet\n     *        AdaptationSet node from the mpd\n     * @return {RepresentationInformation[]}\n     *         List of objects containing Representaion information\n     */\n\n    /**\n     * Returns a callback for Array.prototype.map for mapping AdaptationSet nodes to a list of\n     * Representation information objects\n     *\n     * @param {Object} periodAttributes\n     *        Contains attributes inherited by the Period\n     * @param {Object[]} periodBaseUrls\n     *        Contains list of objects with resolved base urls and attributes\n     *        inherited by the Period\n     * @param {string[]} periodSegmentInfo\n     *        Contains Segment Information at the period level\n     * @return {toRepresentationsCallback}\n     *         Callback map function\n     */\n\n    const toRepresentations = (periodAttributes, periodBaseUrls, periodSegmentInfo) => adaptationSet => {\n        const adaptationSetAttributes = parseAttributes(adaptationSet);\n        const adaptationSetBaseUrls = buildBaseUrls(periodBaseUrls, findChildren(adaptationSet, 'BaseURL'));\n        const role = findChildren(adaptationSet, 'Role')[0];\n        const roleAttributes = {\n            role: parseAttributes(role)\n        };\n        let attrs = merge$1(periodAttributes, adaptationSetAttributes, roleAttributes);\n        const accessibility = findChildren(adaptationSet, 'Accessibility')[0];\n        const captionServices = parseCaptionServiceMetadata(parseAttributes(accessibility));\n        if (captionServices) {\n            attrs = merge$1(attrs, {\n                captionServices\n            });\n        }\n        const label = findChildren(adaptationSet, 'Label')[0];\n        if (label && label.childNodes.length) {\n            const labelVal = label.childNodes[0].nodeValue.trim();\n            attrs = merge$1(attrs, {\n                label: labelVal\n            });\n        }\n        const contentProtection = generateKeySystemInformation(findChildren(adaptationSet, 'ContentProtection'));\n        if (Object.keys(contentProtection).length) {\n            attrs = merge$1(attrs, {\n                contentProtection\n            });\n        }\n        const segmentInfo = getSegmentInformation(adaptationSet);\n        const representations = findChildren(adaptationSet, 'Representation');\n        const adaptationSetSegmentInfo = merge$1(periodSegmentInfo, segmentInfo);\n        return flatten(representations.map(inheritBaseUrls(attrs, adaptationSetBaseUrls, adaptationSetSegmentInfo)));\n    };\n    /**\n     * Contains all period information for mapping nodes onto adaptation sets.\n     *\n     * @typedef {Object} PeriodInformation\n     * @property {Node} period.node\n     *           Period node from the mpd\n     * @property {Object} period.attributes\n     *           Parsed period attributes from node plus any added\n     */\n\n    /**\n     * Maps a PeriodInformation object to a list of Representation information objects for all\n     * AdaptationSet nodes contained within the Period.\n     *\n     * @name toAdaptationSetsCallback\n     * @function\n     * @param {PeriodInformation} period\n     *        Period object containing necessary period information\n     * @param {number} periodStart\n     *        Start time of the Period within the mpd\n     * @return {RepresentationInformation[]}\n     *         List of objects containing Representaion information\n     */\n\n    /**\n     * Returns a callback for Array.prototype.map for mapping Period nodes to a list of\n     * Representation information objects\n     *\n     * @param {Object} mpdAttributes\n     *        Contains attributes inherited by the mpd\n     * @param {Object[]} mpdBaseUrls\n     *        Contains list of objects with resolved base urls and attributes\n     *        inherited by the mpd\n     * @return {toAdaptationSetsCallback}\n     *         Callback map function\n     */\n\n    const toAdaptationSets = (mpdAttributes, mpdBaseUrls) => (period, index) => {\n        const periodBaseUrls = buildBaseUrls(mpdBaseUrls, findChildren(period.node, 'BaseURL'));\n        const periodAttributes = merge$1(mpdAttributes, {\n            periodStart: period.attributes.start\n        });\n        if (typeof period.attributes.duration === 'number') {\n            periodAttributes.periodDuration = period.attributes.duration;\n        }\n        const adaptationSets = findChildren(period.node, 'AdaptationSet');\n        const periodSegmentInfo = getSegmentInformation(period.node);\n        return flatten(adaptationSets.map(toRepresentations(periodAttributes, periodBaseUrls, periodSegmentInfo)));\n    };\n    /**\n     * Tranforms an array of content steering nodes into an object\n     * containing CDN content steering information from the MPD manifest.\n     *\n     * For more information on the DASH spec for Content Steering parsing, see:\n     * https://dashif.org/docs/DASH-IF-CTS-00XX-Content-Steering-Community-Review.pdf\n     *\n     * @param {Node[]} contentSteeringNodes\n     *        Content steering nodes\n     * @param {Function} eventHandler\n     *        The event handler passed into the parser options to handle warnings\n     * @return {Object}\n     *        Object containing content steering data\n     */\n\n    const generateContentSteeringInformation = (contentSteeringNodes, eventHandler) => {\n        // If there are more than one ContentSteering tags, throw an error\n        if (contentSteeringNodes.length > 1) {\n            eventHandler({\n                type: 'warn',\n                message: 'The MPD manifest should contain no more than one ContentSteering tag'\n            });\n        } // Return a null value if there are no ContentSteering tags\n\n        if (!contentSteeringNodes.length) {\n            return null;\n        }\n        const infoFromContentSteeringTag = merge$1({\n            serverURL: getContent(contentSteeringNodes[0])\n        }, parseAttributes(contentSteeringNodes[0])); // Converts `queryBeforeStart` to a boolean, as well as setting the default value\n        // to `false` if it doesn't exist\n\n        infoFromContentSteeringTag.queryBeforeStart = infoFromContentSteeringTag.queryBeforeStart === 'true';\n        return infoFromContentSteeringTag;\n    };\n    /**\n     * Gets Period@start property for a given period.\n     *\n     * @param {Object} options\n     *        Options object\n     * @param {Object} options.attributes\n     *        Period attributes\n     * @param {Object} [options.priorPeriodAttributes]\n     *        Prior period attributes (if prior period is available)\n     * @param {string} options.mpdType\n     *        The MPD@type these periods came from\n     * @return {number|null}\n     *         The period start, or null if it's an early available period or error\n     */\n\n    const getPeriodStart = ({\n                                attributes,\n                                priorPeriodAttributes,\n                                mpdType\n                            }) => {\n        // Summary of period start time calculation from DASH spec section 5.3.2.1\n        //\n        // A period's start is the first period's start + time elapsed after playing all\n        // prior periods to this one. Periods continue one after the other in time (without\n        // gaps) until the end of the presentation.\n        //\n        // The value of Period@start should be:\n        // 1. if Period@start is present: value of Period@start\n        // 2. if previous period exists and it has @duration: previous Period@start +\n        //    previous Period@duration\n        // 3. if this is first period and MPD@type is 'static': 0\n        // 4. in all other cases, consider the period an \"early available period\" (note: not\n        //    currently supported)\n        // (1)\n        if (typeof attributes.start === 'number') {\n            return attributes.start;\n        } // (2)\n\n        if (priorPeriodAttributes && typeof priorPeriodAttributes.start === 'number' && typeof priorPeriodAttributes.duration === 'number') {\n            return priorPeriodAttributes.start + priorPeriodAttributes.duration;\n        } // (3)\n\n        if (!priorPeriodAttributes && mpdType === 'static') {\n            return 0;\n        } // (4)\n        // There is currently no logic for calculating the Period@start value if there is\n        // no Period@start or prior Period@start and Period@duration available. This is not made\n        // explicit by the DASH interop guidelines or the DASH spec, however, since there's\n        // nothing about any other resolution strategies, it's implied. Thus, this case should\n        // be considered an early available period, or error, and null should suffice for both\n        // of those cases.\n\n        return null;\n    };\n    /**\n     * Traverses the mpd xml tree to generate a list of Representation information objects\n     * that have inherited attributes from parent nodes\n     *\n     * @param {Node} mpd\n     *        The root node of the mpd\n     * @param {Object} options\n     *        Available options for inheritAttributes\n     * @param {string} options.manifestUri\n     *        The uri source of the mpd\n     * @param {number} options.NOW\n     *        Current time per DASH IOP.  Default is current time in ms since epoch\n     * @param {number} options.clientOffset\n     *        Client time difference from NOW (in milliseconds)\n     * @return {RepresentationInformation[]}\n     *         List of objects containing Representation information\n     */\n\n    const inheritAttributes = (mpd, options = {}) => {\n        const {\n            manifestUri = '',\n            NOW = Date.now(),\n            clientOffset = 0,\n            // TODO: For now, we are expecting an eventHandler callback function\n            // to be passed into the mpd parser as an option.\n            // In the future, we should enable stream parsing by using the Stream class from vhs-utils.\n            // This will support new features including a standardized event handler.\n            // See the m3u8 parser for examples of how stream parsing is currently used for HLS parsing.\n            // https://github.com/videojs/vhs-utils/blob/88d6e10c631e57a5af02c5a62bc7376cd456b4f5/src/stream.js#L9\n            eventHandler = function () {}\n        } = options;\n        const periodNodes = findChildren(mpd, 'Period');\n        if (!periodNodes.length) {\n            throw new Error(errors.INVALID_NUMBER_OF_PERIOD);\n        }\n        const locations = findChildren(mpd, 'Location');\n        const mpdAttributes = parseAttributes(mpd);\n        const mpdBaseUrls = buildBaseUrls([{\n            baseUrl: manifestUri\n        }], findChildren(mpd, 'BaseURL'));\n        const contentSteeringNodes = findChildren(mpd, 'ContentSteering'); // See DASH spec section 5.3.1.2, Semantics of MPD element. Default type to 'static'.\n\n        mpdAttributes.type = mpdAttributes.type || 'static';\n        mpdAttributes.sourceDuration = mpdAttributes.mediaPresentationDuration || 0;\n        mpdAttributes.NOW = NOW;\n        mpdAttributes.clientOffset = clientOffset;\n        if (locations.length) {\n            mpdAttributes.locations = locations.map(getContent);\n        }\n        const periods = []; // Since toAdaptationSets acts on individual periods right now, the simplest approach to\n        // adding properties that require looking at prior periods is to parse attributes and add\n        // missing ones before toAdaptationSets is called. If more such properties are added, it\n        // may be better to refactor toAdaptationSets.\n\n        periodNodes.forEach((node, index) => {\n            const attributes = parseAttributes(node); // Use the last modified prior period, as it may contain added information necessary\n            // for this period.\n\n            const priorPeriod = periods[index - 1];\n            attributes.start = getPeriodStart({\n                attributes,\n                priorPeriodAttributes: priorPeriod ? priorPeriod.attributes : null,\n                mpdType: mpdAttributes.type\n            });\n            periods.push({\n                node,\n                attributes\n            });\n        });\n        return {\n            locations: mpdAttributes.locations,\n            contentSteeringInfo: generateContentSteeringInformation(contentSteeringNodes, eventHandler),\n            // TODO: There are occurences where this `representationInfo` array contains undesired\n            // duplicates. This generally occurs when there are multiple BaseURL nodes that are\n            // direct children of the MPD node. When we attempt to resolve URLs from a combination of the\n            // parent BaseURL and a child BaseURL, and the value does not resolve,\n            // we end up returning the child BaseURL multiple times.\n            // We need to determine a way to remove these duplicates in a safe way.\n            // See: https://github.com/videojs/mpd-parser/pull/17#discussion_r162750527\n            representationInfo: flatten(periods.map(toAdaptationSets(mpdAttributes, mpdBaseUrls))),\n            eventStream: flatten(periods.map(toEventStream))\n        };\n    };\n    const stringToMpdXml = manifestString => {\n        if (manifestString === '') {\n            throw new Error(errors.DASH_EMPTY_MANIFEST);\n        }\n        const parser = new DOMParser();\n        let xml;\n        let mpd;\n        try {\n            xml = parser.parseFromString(manifestString, 'application/xml');\n            mpd = xml && xml.documentElement.tagName === 'MPD' ? xml.documentElement : null;\n        } catch (e) {// ie 11 throws on invalid xml\n        }\n        if (!mpd || mpd && mpd.getElementsByTagName('parsererror').length > 0) {\n            throw new Error(errors.DASH_INVALID_XML);\n        }\n        return mpd;\n    };\n\n    /**\n     * Parses the manifest for a UTCTiming node, returning the nodes attributes if found\n     *\n     * @param {string} mpd\n     *        XML string of the MPD manifest\n     * @return {Object|null}\n     *         Attributes of UTCTiming node specified in the manifest. Null if none found\n     */\n\n    const parseUTCTimingScheme = mpd => {\n        const UTCTimingNode = findChildren(mpd, 'UTCTiming')[0];\n        if (!UTCTimingNode) {\n            return null;\n        }\n        const attributes = parseAttributes(UTCTimingNode);\n        switch (attributes.schemeIdUri) {\n            case 'urn:mpeg:dash:utc:http-head:2014':\n            case 'urn:mpeg:dash:utc:http-head:2012':\n                attributes.method = 'HEAD';\n                break;\n            case 'urn:mpeg:dash:utc:http-xsdate:2014':\n            case 'urn:mpeg:dash:utc:http-iso:2014':\n            case 'urn:mpeg:dash:utc:http-xsdate:2012':\n            case 'urn:mpeg:dash:utc:http-iso:2012':\n                attributes.method = 'GET';\n                break;\n            case 'urn:mpeg:dash:utc:direct:2014':\n            case 'urn:mpeg:dash:utc:direct:2012':\n                attributes.method = 'DIRECT';\n                attributes.value = Date.parse(attributes.value);\n                break;\n            case 'urn:mpeg:dash:utc:http-ntp:2014':\n            case 'urn:mpeg:dash:utc:ntp:2014':\n            case 'urn:mpeg:dash:utc:sntp:2014':\n            default:\n                throw new Error(errors.UNSUPPORTED_UTC_TIMING_SCHEME);\n        }\n        return attributes;\n    };\n    /*\n   * Given a DASH manifest string and options, parses the DASH manifest into an object in the\n   * form outputed by m3u8-parser and accepted by videojs/http-streaming.\n   *\n   * For live DASH manifests, if `previousManifest` is provided in options, then the newly\n   * parsed DASH manifest will have its media sequence and discontinuity sequence values\n   * updated to reflect its position relative to the prior manifest.\n   *\n   * @param {string} manifestString - the DASH manifest as a string\n   * @param {options} [options] - any options\n   *\n   * @return {Object} the manifest object\n   */\n\n    const parse = (manifestString, options = {}) => {\n        const parsedManifestInfo = inheritAttributes(stringToMpdXml(manifestString), options);\n        const playlists = toPlaylists(parsedManifestInfo.representationInfo);\n        return toM3u8({\n            dashPlaylists: playlists,\n            locations: parsedManifestInfo.locations,\n            contentSteering: parsedManifestInfo.contentSteeringInfo,\n            sidxMapping: options.sidxMapping,\n            previousManifest: options.previousManifest,\n            eventStream: parsedManifestInfo.eventStream\n        });\n    };\n    /**\n     * Parses the manifest for a UTCTiming node, returning the nodes attributes if found\n     *\n     * @param {string} manifestString\n     *        XML string of the MPD manifest\n     * @return {Object|null}\n     *         Attributes of UTCTiming node specified in the manifest. Null if none found\n     */\n\n    const parseUTCTiming = manifestString => parseUTCTimingScheme(stringToMpdXml(manifestString));\n\n    var MAX_UINT32 = Math.pow(2, 32);\n    var getUint64$1 = function (uint8) {\n        var dv = new DataView(uint8.buffer, uint8.byteOffset, uint8.byteLength);\n        var value;\n        if (dv.getBigUint64) {\n            value = dv.getBigUint64(0);\n            if (value < Number.MAX_SAFE_INTEGER) {\n                return Number(value);\n            }\n            return value;\n        }\n        return dv.getUint32(0) * MAX_UINT32 + dv.getUint32(4);\n    };\n    var numbers = {\n        getUint64: getUint64$1,\n        MAX_UINT32: MAX_UINT32\n    };\n\n    var getUint64 = numbers.getUint64;\n    var parseSidx = function (data) {\n        var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n            result = {\n                version: data[0],\n                flags: new Uint8Array(data.subarray(1, 4)),\n                references: [],\n                referenceId: view.getUint32(4),\n                timescale: view.getUint32(8)\n            },\n            i = 12;\n        if (result.version === 0) {\n            result.earliestPresentationTime = view.getUint32(i);\n            result.firstOffset = view.getUint32(i + 4);\n            i += 8;\n        } else {\n            // read 64 bits\n            result.earliestPresentationTime = getUint64(data.subarray(i));\n            result.firstOffset = getUint64(data.subarray(i + 8));\n            i += 16;\n        }\n        i += 2; // reserved\n\n        var referenceCount = view.getUint16(i);\n        i += 2; // start of references\n\n        for (; referenceCount > 0; i += 12, referenceCount--) {\n            result.references.push({\n                referenceType: (data[i] & 0x80) >>> 7,\n                referencedSize: view.getUint32(i) & 0x7FFFFFFF,\n                subsegmentDuration: view.getUint32(i + 4),\n                startsWithSap: !!(data[i + 8] & 0x80),\n                sapType: (data[i + 8] & 0x70) >>> 4,\n                sapDeltaTime: view.getUint32(i + 8) & 0x0FFFFFFF\n            });\n        }\n        return result;\n    };\n    var parseSidx_1 = parseSidx;\n\n    var ID3 = toUint8([0x49, 0x44, 0x33]);\n    var getId3Size = function getId3Size(bytes, offset) {\n        if (offset === void 0) {\n            offset = 0;\n        }\n        bytes = toUint8(bytes);\n        var flags = bytes[offset + 5];\n        var returnSize = bytes[offset + 6] << 21 | bytes[offset + 7] << 14 | bytes[offset + 8] << 7 | bytes[offset + 9];\n        var footerPresent = (flags & 16) >> 4;\n        if (footerPresent) {\n            return returnSize + 20;\n        }\n        return returnSize + 10;\n    };\n    var getId3Offset = function getId3Offset(bytes, offset) {\n        if (offset === void 0) {\n            offset = 0;\n        }\n        bytes = toUint8(bytes);\n        if (bytes.length - offset < 10 || !bytesMatch(bytes, ID3, {\n            offset: offset\n        })) {\n            return offset;\n        }\n        offset += getId3Size(bytes, offset); // recursive check for id3 tags as some files\n        // have multiple ID3 tag sections even though\n        // they should not.\n\n        return getId3Offset(bytes, offset);\n    };\n\n    var normalizePath$1 = function normalizePath(path) {\n        if (typeof path === 'string') {\n            return stringToBytes(path);\n        }\n        if (typeof path === 'number') {\n            return path;\n        }\n        return path;\n    };\n    var normalizePaths$1 = function normalizePaths(paths) {\n        if (!Array.isArray(paths)) {\n            return [normalizePath$1(paths)];\n        }\n        return paths.map(function (p) {\n            return normalizePath$1(p);\n        });\n    };\n    /**\n     * find any number of boxes by name given a path to it in an iso bmff\n     * such as mp4.\n     *\n     * @param {TypedArray} bytes\n     *        bytes for the iso bmff to search for boxes in\n     *\n     * @param {Uint8Array[]|string[]|string|Uint8Array} name\n     *        An array of paths or a single path representing the name\n     *        of boxes to search through in bytes. Paths may be\n     *        uint8 (character codes) or strings.\n     *\n     * @param {boolean} [complete=false]\n     *        Should we search only for complete boxes on the final path.\n     *        This is very useful when you do not want to get back partial boxes\n     *        in the case of streaming files.\n     *\n     * @return {Uint8Array[]}\n     *         An array of the end paths that we found.\n     */\n\n    var findBox = function findBox(bytes, paths, complete) {\n        if (complete === void 0) {\n            complete = false;\n        }\n        paths = normalizePaths$1(paths);\n        bytes = toUint8(bytes);\n        var results = [];\n        if (!paths.length) {\n            // short-circuit the search for empty paths\n            return results;\n        }\n        var i = 0;\n        while (i < bytes.length) {\n            var size = (bytes[i] << 24 | bytes[i + 1] << 16 | bytes[i + 2] << 8 | bytes[i + 3]) >>> 0;\n            var type = bytes.subarray(i + 4, i + 8); // invalid box format.\n\n            if (size === 0) {\n                break;\n            }\n            var end = i + size;\n            if (end > bytes.length) {\n                // this box is bigger than the number of bytes we have\n                // and complete is set, we cannot find any more boxes.\n                if (complete) {\n                    break;\n                }\n                end = bytes.length;\n            }\n            var data = bytes.subarray(i + 8, end);\n            if (bytesMatch(type, paths[0])) {\n                if (paths.length === 1) {\n                    // this is the end of the path and we've found the box we were\n                    // looking for\n                    results.push(data);\n                } else {\n                    // recursively search for the next box along the path\n                    results.push.apply(results, findBox(data, paths.slice(1), complete));\n                }\n            }\n            i = end;\n        } // we've finished searching all of bytes\n\n        return results;\n    };\n\n    // https://matroska-org.github.io/libebml/specs.html\n    // https://www.matroska.org/technical/elements.html\n    // https://www.webmproject.org/docs/container/\n\n    var EBML_TAGS = {\n        EBML: toUint8([0x1A, 0x45, 0xDF, 0xA3]),\n        DocType: toUint8([0x42, 0x82]),\n        Segment: toUint8([0x18, 0x53, 0x80, 0x67]),\n        SegmentInfo: toUint8([0x15, 0x49, 0xA9, 0x66]),\n        Tracks: toUint8([0x16, 0x54, 0xAE, 0x6B]),\n        Track: toUint8([0xAE]),\n        TrackNumber: toUint8([0xd7]),\n        DefaultDuration: toUint8([0x23, 0xe3, 0x83]),\n        TrackEntry: toUint8([0xAE]),\n        TrackType: toUint8([0x83]),\n        FlagDefault: toUint8([0x88]),\n        CodecID: toUint8([0x86]),\n        CodecPrivate: toUint8([0x63, 0xA2]),\n        VideoTrack: toUint8([0xe0]),\n        AudioTrack: toUint8([0xe1]),\n        // Not used yet, but will be used for live webm/mkv\n        // see https://www.matroska.org/technical/basics.html#block-structure\n        // see https://www.matroska.org/technical/basics.html#simpleblock-structure\n        Cluster: toUint8([0x1F, 0x43, 0xB6, 0x75]),\n        Timestamp: toUint8([0xE7]),\n        TimestampScale: toUint8([0x2A, 0xD7, 0xB1]),\n        BlockGroup: toUint8([0xA0]),\n        BlockDuration: toUint8([0x9B]),\n        Block: toUint8([0xA1]),\n        SimpleBlock: toUint8([0xA3])\n    };\n    /**\n     * This is a simple table to determine the length\n     * of things in ebml. The length is one based (starts at 1,\n     * rather than zero) and for every zero bit before a one bit\n     * we add one to length. We also need this table because in some\n     * case we have to xor all the length bits from another value.\n     */\n\n    var LENGTH_TABLE = [128, 64, 32, 16, 8, 4, 2, 1];\n    var getLength = function getLength(byte) {\n        var len = 1;\n        for (var i = 0; i < LENGTH_TABLE.length; i++) {\n            if (byte & LENGTH_TABLE[i]) {\n                break;\n            }\n            len++;\n        }\n        return len;\n    }; // length in ebml is stored in the first 4 to 8 bits\n    // of the first byte. 4 for the id length and 8 for the\n    // data size length. Length is measured by converting the number to binary\n    // then 1 + the number of zeros before a 1 is encountered starting\n    // from the left.\n\n    var getvint = function getvint(bytes, offset, removeLength, signed) {\n        if (removeLength === void 0) {\n            removeLength = true;\n        }\n        if (signed === void 0) {\n            signed = false;\n        }\n        var length = getLength(bytes[offset]);\n        var valueBytes = bytes.subarray(offset, offset + length); // NOTE that we do **not** subarray here because we need to copy these bytes\n        // as they will be modified below to remove the dataSizeLen bits and we do not\n        // want to modify the original data. normally we could just call slice on\n        // uint8array but ie 11 does not support that...\n\n        if (removeLength) {\n            valueBytes = Array.prototype.slice.call(bytes, offset, offset + length);\n            valueBytes[0] ^= LENGTH_TABLE[length - 1];\n        }\n        return {\n            length: length,\n            value: bytesToNumber(valueBytes, {\n                signed: signed\n            }),\n            bytes: valueBytes\n        };\n    };\n    var normalizePath = function normalizePath(path) {\n        if (typeof path === 'string') {\n            return path.match(/.{1,2}/g).map(function (p) {\n                return normalizePath(p);\n            });\n        }\n        if (typeof path === 'number') {\n            return numberToBytes(path);\n        }\n        return path;\n    };\n    var normalizePaths = function normalizePaths(paths) {\n        if (!Array.isArray(paths)) {\n            return [normalizePath(paths)];\n        }\n        return paths.map(function (p) {\n            return normalizePath(p);\n        });\n    };\n    var getInfinityDataSize = function getInfinityDataSize(id, bytes, offset) {\n        if (offset >= bytes.length) {\n            return bytes.length;\n        }\n        var innerid = getvint(bytes, offset, false);\n        if (bytesMatch(id.bytes, innerid.bytes)) {\n            return offset;\n        }\n        var dataHeader = getvint(bytes, offset + innerid.length);\n        return getInfinityDataSize(id, bytes, offset + dataHeader.length + dataHeader.value + innerid.length);\n    };\n    /**\n     * Notes on the EBLM format.\n     *\n     * EBLM uses \"vints\" tags. Every vint tag contains\n     * two parts\n     *\n     * 1. The length from the first byte. You get this by\n     *    converting the byte to binary and counting the zeros\n     *    before a 1. Then you add 1 to that. Examples\n     *    00011111 = length 4 because there are 3 zeros before a 1.\n     *    00100000 = length 3 because there are 2 zeros before a 1.\n     *    00000011 = length 7 because there are 6 zeros before a 1.\n     *\n     * 2. The bits used for length are removed from the first byte\n     *    Then all the bytes are merged into a value. NOTE: this\n     *    is not the case for id ebml tags as there id includes\n     *    length bits.\n     *\n     */\n\n    var findEbml = function findEbml(bytes, paths) {\n        paths = normalizePaths(paths);\n        bytes = toUint8(bytes);\n        var results = [];\n        if (!paths.length) {\n            return results;\n        }\n        var i = 0;\n        while (i < bytes.length) {\n            var id = getvint(bytes, i, false);\n            var dataHeader = getvint(bytes, i + id.length);\n            var dataStart = i + id.length + dataHeader.length; // dataSize is unknown or this is a live stream\n\n            if (dataHeader.value === 0x7f) {\n                dataHeader.value = getInfinityDataSize(id, bytes, dataStart);\n                if (dataHeader.value !== bytes.length) {\n                    dataHeader.value -= dataStart;\n                }\n            }\n            var dataEnd = dataStart + dataHeader.value > bytes.length ? bytes.length : dataStart + dataHeader.value;\n            var data = bytes.subarray(dataStart, dataEnd);\n            if (bytesMatch(paths[0], id.bytes)) {\n                if (paths.length === 1) {\n                    // this is the end of the paths and we've found the tag we were\n                    // looking for\n                    results.push(data);\n                } else {\n                    // recursively search for the next tag inside of the data\n                    // of this one\n                    results = results.concat(findEbml(data, paths.slice(1)));\n                }\n            }\n            var totalLength = id.length + dataHeader.length + data.length; // move past this tag entirely, we are not looking for it\n\n            i += totalLength;\n        }\n        return results;\n    }; // see https://www.matroska.org/technical/basics.html#block-structure\n\n    var NAL_TYPE_ONE = toUint8([0x00, 0x00, 0x00, 0x01]);\n    var NAL_TYPE_TWO = toUint8([0x00, 0x00, 0x01]);\n    var EMULATION_PREVENTION = toUint8([0x00, 0x00, 0x03]);\n    /**\n     * Expunge any \"Emulation Prevention\" bytes from a \"Raw Byte\n     * Sequence Payload\"\n     *\n     * @param data {Uint8Array} the bytes of a RBSP from a NAL\n     * unit\n     * @return {Uint8Array} the RBSP without any Emulation\n     * Prevention Bytes\n     */\n\n    var discardEmulationPreventionBytes = function discardEmulationPreventionBytes(bytes) {\n        var positions = [];\n        var i = 1; // Find all `Emulation Prevention Bytes`\n\n        while (i < bytes.length - 2) {\n            if (bytesMatch(bytes.subarray(i, i + 3), EMULATION_PREVENTION)) {\n                positions.push(i + 2);\n                i++;\n            }\n            i++;\n        } // If no Emulation Prevention Bytes were found just return the original\n        // array\n\n        if (positions.length === 0) {\n            return bytes;\n        } // Create a new array to hold the NAL unit data\n\n        var newLength = bytes.length - positions.length;\n        var newData = new Uint8Array(newLength);\n        var sourceIndex = 0;\n        for (i = 0; i < newLength; sourceIndex++, i++) {\n            if (sourceIndex === positions[0]) {\n                // Skip this byte\n                sourceIndex++; // Remove this position index\n\n                positions.shift();\n            }\n            newData[i] = bytes[sourceIndex];\n        }\n        return newData;\n    };\n    var findNal = function findNal(bytes, dataType, types, nalLimit) {\n        if (nalLimit === void 0) {\n            nalLimit = Infinity;\n        }\n        bytes = toUint8(bytes);\n        types = [].concat(types);\n        var i = 0;\n        var nalStart;\n        var nalsFound = 0; // keep searching until:\n        // we reach the end of bytes\n        // we reach the maximum number of nals they want to seach\n        // NOTE: that we disregard nalLimit when we have found the start\n        // of the nal we want so that we can find the end of the nal we want.\n\n        while (i < bytes.length && (nalsFound < nalLimit || nalStart)) {\n            var nalOffset = void 0;\n            if (bytesMatch(bytes.subarray(i), NAL_TYPE_ONE)) {\n                nalOffset = 4;\n            } else if (bytesMatch(bytes.subarray(i), NAL_TYPE_TWO)) {\n                nalOffset = 3;\n            } // we are unsynced,\n            // find the next nal unit\n\n            if (!nalOffset) {\n                i++;\n                continue;\n            }\n            nalsFound++;\n            if (nalStart) {\n                return discardEmulationPreventionBytes(bytes.subarray(nalStart, i));\n            }\n            var nalType = void 0;\n            if (dataType === 'h264') {\n                nalType = bytes[i + nalOffset] & 0x1f;\n            } else if (dataType === 'h265') {\n                nalType = bytes[i + nalOffset] >> 1 & 0x3f;\n            }\n            if (types.indexOf(nalType) !== -1) {\n                nalStart = i + nalOffset;\n            } // nal header is 1 length for h264, and 2 for h265\n\n            i += nalOffset + (dataType === 'h264' ? 1 : 2);\n        }\n        return bytes.subarray(0, 0);\n    };\n    var findH264Nal = function findH264Nal(bytes, type, nalLimit) {\n        return findNal(bytes, 'h264', type, nalLimit);\n    };\n    var findH265Nal = function findH265Nal(bytes, type, nalLimit) {\n        return findNal(bytes, 'h265', type, nalLimit);\n    };\n\n    var CONSTANTS = {\n        // \"webm\" string literal in hex\n        'webm': toUint8([0x77, 0x65, 0x62, 0x6d]),\n        // \"matroska\" string literal in hex\n        'matroska': toUint8([0x6d, 0x61, 0x74, 0x72, 0x6f, 0x73, 0x6b, 0x61]),\n        // \"fLaC\" string literal in hex\n        'flac': toUint8([0x66, 0x4c, 0x61, 0x43]),\n        // \"OggS\" string literal in hex\n        'ogg': toUint8([0x4f, 0x67, 0x67, 0x53]),\n        // ac-3 sync byte, also works for ec-3 as that is simply a codec\n        // of ac-3\n        'ac3': toUint8([0x0b, 0x77]),\n        // \"RIFF\" string literal in hex used for wav and avi\n        'riff': toUint8([0x52, 0x49, 0x46, 0x46]),\n        // \"AVI\" string literal in hex\n        'avi': toUint8([0x41, 0x56, 0x49]),\n        // \"WAVE\" string literal in hex\n        'wav': toUint8([0x57, 0x41, 0x56, 0x45]),\n        // \"ftyp3g\" string literal in hex\n        '3gp': toUint8([0x66, 0x74, 0x79, 0x70, 0x33, 0x67]),\n        // \"ftyp\" string literal in hex\n        'mp4': toUint8([0x66, 0x74, 0x79, 0x70]),\n        // \"styp\" string literal in hex\n        'fmp4': toUint8([0x73, 0x74, 0x79, 0x70]),\n        // \"ftypqt\" string literal in hex\n        'mov': toUint8([0x66, 0x74, 0x79, 0x70, 0x71, 0x74]),\n        // moov string literal in hex\n        'moov': toUint8([0x6D, 0x6F, 0x6F, 0x76]),\n        // moof string literal in hex\n        'moof': toUint8([0x6D, 0x6F, 0x6F, 0x66])\n    };\n    var _isLikely = {\n        aac: function aac(bytes) {\n            var offset = getId3Offset(bytes);\n            return bytesMatch(bytes, [0xFF, 0x10], {\n                offset: offset,\n                mask: [0xFF, 0x16]\n            });\n        },\n        mp3: function mp3(bytes) {\n            var offset = getId3Offset(bytes);\n            return bytesMatch(bytes, [0xFF, 0x02], {\n                offset: offset,\n                mask: [0xFF, 0x06]\n            });\n        },\n        webm: function webm(bytes) {\n            var docType = findEbml(bytes, [EBML_TAGS.EBML, EBML_TAGS.DocType])[0]; // check if DocType EBML tag is webm\n\n            return bytesMatch(docType, CONSTANTS.webm);\n        },\n        mkv: function mkv(bytes) {\n            var docType = findEbml(bytes, [EBML_TAGS.EBML, EBML_TAGS.DocType])[0]; // check if DocType EBML tag is matroska\n\n            return bytesMatch(docType, CONSTANTS.matroska);\n        },\n        mp4: function mp4(bytes) {\n            // if this file is another base media file format, it is not mp4\n            if (_isLikely['3gp'](bytes) || _isLikely.mov(bytes)) {\n                return false;\n            } // if this file starts with a ftyp or styp box its mp4\n\n            if (bytesMatch(bytes, CONSTANTS.mp4, {\n                offset: 4\n            }) || bytesMatch(bytes, CONSTANTS.fmp4, {\n                offset: 4\n            })) {\n                return true;\n            } // if this file starts with a moof/moov box its mp4\n\n            if (bytesMatch(bytes, CONSTANTS.moof, {\n                offset: 4\n            }) || bytesMatch(bytes, CONSTANTS.moov, {\n                offset: 4\n            })) {\n                return true;\n            }\n        },\n        mov: function mov(bytes) {\n            return bytesMatch(bytes, CONSTANTS.mov, {\n                offset: 4\n            });\n        },\n        '3gp': function gp(bytes) {\n            return bytesMatch(bytes, CONSTANTS['3gp'], {\n                offset: 4\n            });\n        },\n        ac3: function ac3(bytes) {\n            var offset = getId3Offset(bytes);\n            return bytesMatch(bytes, CONSTANTS.ac3, {\n                offset: offset\n            });\n        },\n        ts: function ts(bytes) {\n            if (bytes.length < 189 && bytes.length >= 1) {\n                return bytes[0] === 0x47;\n            }\n            var i = 0; // check the first 376 bytes for two matching sync bytes\n\n            while (i + 188 < bytes.length && i < 188) {\n                if (bytes[i] === 0x47 && bytes[i + 188] === 0x47) {\n                    return true;\n                }\n                i += 1;\n            }\n            return false;\n        },\n        flac: function flac(bytes) {\n            var offset = getId3Offset(bytes);\n            return bytesMatch(bytes, CONSTANTS.flac, {\n                offset: offset\n            });\n        },\n        ogg: function ogg(bytes) {\n            return bytesMatch(bytes, CONSTANTS.ogg);\n        },\n        avi: function avi(bytes) {\n            return bytesMatch(bytes, CONSTANTS.riff) && bytesMatch(bytes, CONSTANTS.avi, {\n                offset: 8\n            });\n        },\n        wav: function wav(bytes) {\n            return bytesMatch(bytes, CONSTANTS.riff) && bytesMatch(bytes, CONSTANTS.wav, {\n                offset: 8\n            });\n        },\n        'h264': function h264(bytes) {\n            // find seq_parameter_set_rbsp\n            return findH264Nal(bytes, 7, 3).length;\n        },\n        'h265': function h265(bytes) {\n            // find video_parameter_set_rbsp or seq_parameter_set_rbsp\n            return findH265Nal(bytes, [32, 33], 3).length;\n        }\n    }; // get all the isLikely functions\n    // but make sure 'ts' is above h264 and h265\n    // but below everything else as it is the least specific\n\n    var isLikelyTypes = Object.keys(_isLikely) // remove ts, h264, h265\n        .filter(function (t) {\n            return t !== 'ts' && t !== 'h264' && t !== 'h265';\n        }) // add it back to the bottom\n        .concat(['ts', 'h264', 'h265']); // make sure we are dealing with uint8 data.\n\n    isLikelyTypes.forEach(function (type) {\n        var isLikelyFn = _isLikely[type];\n        _isLikely[type] = function (bytes) {\n            return isLikelyFn(toUint8(bytes));\n        };\n    }); // export after wrapping\n\n    var isLikely = _isLikely; // A useful list of file signatures can be found here\n    // https://en.wikipedia.org/wiki/List_of_file_signatures\n\n    var detectContainerForBytes = function detectContainerForBytes(bytes) {\n        bytes = toUint8(bytes);\n        for (var i = 0; i < isLikelyTypes.length; i++) {\n            var type = isLikelyTypes[i];\n            if (isLikely[type](bytes)) {\n                return type;\n            }\n        }\n        return '';\n    }; // fmp4 is not a container\n\n    var isLikelyFmp4MediaSegment = function isLikelyFmp4MediaSegment(bytes) {\n        return findBox(bytes, ['moof']).length > 0;\n    };\n\n    /**\n     * mux.js\n     *\n     * Copyright (c) Brightcove\n     * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n     */\n    var ONE_SECOND_IN_TS = 90000,\n        // 90kHz clock\n        secondsToVideoTs,\n        secondsToAudioTs,\n        videoTsToSeconds,\n        audioTsToSeconds,\n        audioTsToVideoTs,\n        videoTsToAudioTs,\n        metadataTsToSeconds;\n    secondsToVideoTs = function (seconds) {\n        return seconds * ONE_SECOND_IN_TS;\n    };\n    secondsToAudioTs = function (seconds, sampleRate) {\n        return seconds * sampleRate;\n    };\n    videoTsToSeconds = function (timestamp) {\n        return timestamp / ONE_SECOND_IN_TS;\n    };\n    audioTsToSeconds = function (timestamp, sampleRate) {\n        return timestamp / sampleRate;\n    };\n    audioTsToVideoTs = function (timestamp, sampleRate) {\n        return secondsToVideoTs(audioTsToSeconds(timestamp, sampleRate));\n    };\n    videoTsToAudioTs = function (timestamp, sampleRate) {\n        return secondsToAudioTs(videoTsToSeconds(timestamp), sampleRate);\n    };\n\n    /**\n     * Adjust ID3 tag or caption timing information by the timeline pts values\n     * (if keepOriginalTimestamps is false) and convert to seconds\n     */\n    metadataTsToSeconds = function (timestamp, timelineStartPts, keepOriginalTimestamps) {\n        return videoTsToSeconds(keepOriginalTimestamps ? timestamp : timestamp - timelineStartPts);\n    };\n    var clock = {\n        ONE_SECOND_IN_TS: ONE_SECOND_IN_TS,\n        secondsToVideoTs: secondsToVideoTs,\n        secondsToAudioTs: secondsToAudioTs,\n        videoTsToSeconds: videoTsToSeconds,\n        audioTsToSeconds: audioTsToSeconds,\n        audioTsToVideoTs: audioTsToVideoTs,\n        videoTsToAudioTs: videoTsToAudioTs,\n        metadataTsToSeconds: metadataTsToSeconds\n    };\n    var clock_1 = clock.ONE_SECOND_IN_TS;\n\n    /*! @name @videojs/http-streaming @version 3.10.0 @license Apache-2.0 */\n\n    /**\n     * @file resolve-url.js - Handling how URLs are resolved and manipulated\n     */\n    const resolveUrl = resolveUrl$1;\n    /**\n     * If the xhr request was redirected, return the responseURL, otherwise,\n     * return the original url.\n     *\n     * @api private\n     *\n     * @param  {string} url - an url being requested\n     * @param  {XMLHttpRequest} req - xhr request result\n     *\n     * @return {string}\n     */\n\n    const resolveManifestRedirect = (url, req) => {\n        // To understand how the responseURL below is set and generated:\n        // - https://fetch.spec.whatwg.org/#concept-response-url\n        // - https://fetch.spec.whatwg.org/#atomic-http-redirect-handling\n        if (req && req.responseURL && url !== req.responseURL) {\n            return req.responseURL;\n        }\n        return url;\n    };\n    const logger = source => {\n        if (videojs.log.debug) {\n            return videojs.log.debug.bind(videojs, 'VHS:', `${source} >`);\n        }\n        return function () {};\n    };\n\n    /**\n     * Provides a compatibility layer between Video.js 7 and 8 API changes for VHS.\n     */\n    /**\n     * Delegates to videojs.obj.merge (Video.js 8) or\n     * videojs.mergeOptions (Video.js 7).\n     */\n\n    function merge(...args) {\n        const context = videojs.obj || videojs;\n        const fn = context.merge || context.mergeOptions;\n        return fn.apply(context, args);\n    }\n    /**\n     * Delegates to videojs.time.createTimeRanges (Video.js 8) or\n     * videojs.createTimeRanges (Video.js 7).\n     */\n\n    function createTimeRanges(...args) {\n        const context = videojs.time || videojs;\n        const fn = context.createTimeRanges || context.createTimeRanges;\n        return fn.apply(context, args);\n    }\n\n    /**\n     * ranges\n     *\n     * Utilities for working with TimeRanges.\n     *\n     */\n\n    const TIME_FUDGE_FACTOR = 1 / 30; // Comparisons between time values such as current time and the end of the buffered range\n    // can be misleading because of precision differences or when the current media has poorly\n    // aligned audio and video, which can cause values to be slightly off from what you would\n    // expect. This value is what we consider to be safe to use in such comparisons to account\n    // for these scenarios.\n\n    const SAFE_TIME_DELTA = TIME_FUDGE_FACTOR * 3;\n    const filterRanges = function (timeRanges, predicate) {\n        const results = [];\n        let i;\n        if (timeRanges && timeRanges.length) {\n            // Search for ranges that match the predicate\n            for (i = 0; i < timeRanges.length; i++) {\n                if (predicate(timeRanges.start(i), timeRanges.end(i))) {\n                    results.push([timeRanges.start(i), timeRanges.end(i)]);\n                }\n            }\n        }\n        return createTimeRanges(results);\n    };\n    /**\n     * Attempts to find the buffered TimeRange that contains the specified\n     * time.\n     *\n     * @param {TimeRanges} buffered - the TimeRanges object to query\n     * @param {number} time  - the time to filter on.\n     * @return {TimeRanges} a new TimeRanges object\n     */\n\n    const findRange = function (buffered, time) {\n        return filterRanges(buffered, function (start, end) {\n            return start - SAFE_TIME_DELTA <= time && end + SAFE_TIME_DELTA >= time;\n        });\n    };\n    /**\n     * Returns the TimeRanges that begin later than the specified time.\n     *\n     * @param {TimeRanges} timeRanges - the TimeRanges object to query\n     * @param {number} time - the time to filter on.\n     * @return {TimeRanges} a new TimeRanges object.\n     */\n\n    const findNextRange = function (timeRanges, time) {\n        return filterRanges(timeRanges, function (start) {\n            return start - TIME_FUDGE_FACTOR >= time;\n        });\n    };\n    /**\n     * Returns gaps within a list of TimeRanges\n     *\n     * @param {TimeRanges} buffered - the TimeRanges object\n     * @return {TimeRanges} a TimeRanges object of gaps\n     */\n\n    const findGaps = function (buffered) {\n        if (buffered.length < 2) {\n            return createTimeRanges();\n        }\n        const ranges = [];\n        for (let i = 1; i < buffered.length; i++) {\n            const start = buffered.end(i - 1);\n            const end = buffered.start(i);\n            ranges.push([start, end]);\n        }\n        return createTimeRanges(ranges);\n    };\n    /**\n     * Calculate the intersection of two TimeRanges\n     *\n     * @param {TimeRanges} bufferA\n     * @param {TimeRanges} bufferB\n     * @return {TimeRanges} The interesection of `bufferA` with `bufferB`\n     */\n\n    const bufferIntersection = function (bufferA, bufferB) {\n        let start = null;\n        let end = null;\n        let arity = 0;\n        const extents = [];\n        const ranges = [];\n        if (!bufferA || !bufferA.length || !bufferB || !bufferB.length) {\n            return createTimeRanges();\n        } // Handle the case where we have both buffers and create an\n        // intersection of the two\n\n        let count = bufferA.length; // A) Gather up all start and end times\n\n        while (count--) {\n            extents.push({\n                time: bufferA.start(count),\n                type: 'start'\n            });\n            extents.push({\n                time: bufferA.end(count),\n                type: 'end'\n            });\n        }\n        count = bufferB.length;\n        while (count--) {\n            extents.push({\n                time: bufferB.start(count),\n                type: 'start'\n            });\n            extents.push({\n                time: bufferB.end(count),\n                type: 'end'\n            });\n        } // B) Sort them by time\n\n        extents.sort(function (a, b) {\n            return a.time - b.time;\n        }); // C) Go along one by one incrementing arity for start and decrementing\n        //    arity for ends\n\n        for (count = 0; count < extents.length; count++) {\n            if (extents[count].type === 'start') {\n                arity++; // D) If arity is ever incremented to 2 we are entering an\n                //    overlapping range\n\n                if (arity === 2) {\n                    start = extents[count].time;\n                }\n            } else if (extents[count].type === 'end') {\n                arity--; // E) If arity is ever decremented to 1 we leaving an\n                //    overlapping range\n\n                if (arity === 1) {\n                    end = extents[count].time;\n                }\n            } // F) Record overlapping ranges\n\n            if (start !== null && end !== null) {\n                ranges.push([start, end]);\n                start = null;\n                end = null;\n            }\n        }\n        return createTimeRanges(ranges);\n    };\n    /**\n     * Gets a human readable string for a TimeRange\n     *\n     * @param {TimeRange} range\n     * @return {string} a human readable string\n     */\n\n    const printableRange = range => {\n        const strArr = [];\n        if (!range || !range.length) {\n            return '';\n        }\n        for (let i = 0; i < range.length; i++) {\n            strArr.push(range.start(i) + ' => ' + range.end(i));\n        }\n        return strArr.join(', ');\n    };\n    /**\n     * Calculates the amount of time left in seconds until the player hits the end of the\n     * buffer and causes a rebuffer\n     *\n     * @param {TimeRange} buffered\n     *        The state of the buffer\n     * @param {Numnber} currentTime\n     *        The current time of the player\n     * @param {number} playbackRate\n     *        The current playback rate of the player. Defaults to 1.\n     * @return {number}\n     *         Time until the player has to start rebuffering in seconds.\n     * @function timeUntilRebuffer\n     */\n\n    const timeUntilRebuffer = function (buffered, currentTime, playbackRate = 1) {\n        const bufferedEnd = buffered.length ? buffered.end(buffered.length - 1) : 0;\n        return (bufferedEnd - currentTime) / playbackRate;\n    };\n    /**\n     * Converts a TimeRanges object into an array representation\n     *\n     * @param {TimeRanges} timeRanges\n     * @return {Array}\n     */\n\n    const timeRangesToArray = timeRanges => {\n        const timeRangesList = [];\n        for (let i = 0; i < timeRanges.length; i++) {\n            timeRangesList.push({\n                start: timeRanges.start(i),\n                end: timeRanges.end(i)\n            });\n        }\n        return timeRangesList;\n    };\n    /**\n     * Determines if two time range objects are different.\n     *\n     * @param {TimeRange} a\n     *        the first time range object to check\n     *\n     * @param {TimeRange} b\n     *        the second time range object to check\n     *\n     * @return {Boolean}\n     *         Whether the time range objects differ\n     */\n\n    const isRangeDifferent = function (a, b) {\n        // same object\n        if (a === b) {\n            return false;\n        } // one or the other is undefined\n\n        if (!a && b || !b && a) {\n            return true;\n        } // length is different\n\n        if (a.length !== b.length) {\n            return true;\n        } // see if any start/end pair is different\n\n        for (let i = 0; i < a.length; i++) {\n            if (a.start(i) !== b.start(i) || a.end(i) !== b.end(i)) {\n                return true;\n            }\n        } // if the length and every pair is the same\n        // this is the same time range\n\n        return false;\n    };\n    const lastBufferedEnd = function (a) {\n        if (!a || !a.length || !a.end) {\n            return;\n        }\n        return a.end(a.length - 1);\n    };\n    /**\n     * A utility function to add up the amount of time in a timeRange\n     * after a specified startTime.\n     * ie:[[0, 10], [20, 40], [50, 60]] with a startTime 0\n     *     would return 40 as there are 40s seconds after 0 in the timeRange\n     *\n     * @param {TimeRange} range\n     *        The range to check against\n     * @param {number} startTime\n     *        The time in the time range that you should start counting from\n     *\n     * @return {number}\n     *          The number of seconds in the buffer passed the specified time.\n     */\n\n    const timeAheadOf = function (range, startTime) {\n        let time = 0;\n        if (!range || !range.length) {\n            return time;\n        }\n        for (let i = 0; i < range.length; i++) {\n            const start = range.start(i);\n            const end = range.end(i); // startTime is after this range entirely\n\n            if (startTime > end) {\n                continue;\n            } // startTime is within this range\n\n            if (startTime > start && startTime <= end) {\n                time += end - startTime;\n                continue;\n            } // startTime is before this range.\n\n            time += end - start;\n        }\n        return time;\n    };\n\n    /**\n     * @file playlist.js\n     *\n     * Playlist related utilities.\n     */\n    /**\n     * Get the duration of a segment, with special cases for\n     * llhls segments that do not have a duration yet.\n     *\n     * @param {Object} playlist\n     *        the playlist that the segment belongs to.\n     * @param {Object} segment\n     *        the segment to get a duration for.\n     *\n     * @return {number}\n     *          the segment duration\n     */\n\n    const segmentDurationWithParts = (playlist, segment) => {\n        // if this isn't a preload segment\n        // then we will have a segment duration that is accurate.\n        if (!segment.preload) {\n            return segment.duration;\n        } // otherwise we have to add up parts and preload hints\n        // to get an up to date duration.\n\n        let result = 0;\n        (segment.parts || []).forEach(function (p) {\n            result += p.duration;\n        }); // for preload hints we have to use partTargetDuration\n        // as they won't even have a duration yet.\n\n        (segment.preloadHints || []).forEach(function (p) {\n            if (p.type === 'PART') {\n                result += playlist.partTargetDuration;\n            }\n        });\n        return result;\n    };\n    /**\n     * A function to get a combined list of parts and segments with durations\n     * and indexes.\n     *\n     * @param {Playlist} playlist the playlist to get the list for.\n     *\n     * @return {Array} The part/segment list.\n     */\n\n    const getPartsAndSegments = playlist => (playlist.segments || []).reduce((acc, segment, si) => {\n        if (segment.parts) {\n            segment.parts.forEach(function (part, pi) {\n                acc.push({\n                    duration: part.duration,\n                    segmentIndex: si,\n                    partIndex: pi,\n                    part,\n                    segment\n                });\n            });\n        } else {\n            acc.push({\n                duration: segment.duration,\n                segmentIndex: si,\n                partIndex: null,\n                segment,\n                part: null\n            });\n        }\n        return acc;\n    }, []);\n    const getLastParts = media => {\n        const lastSegment = media.segments && media.segments.length && media.segments[media.segments.length - 1];\n        return lastSegment && lastSegment.parts || [];\n    };\n    const getKnownPartCount = ({\n                                   preloadSegment\n                               }) => {\n        if (!preloadSegment) {\n            return;\n        }\n        const {\n            parts,\n            preloadHints\n        } = preloadSegment;\n        let partCount = (preloadHints || []).reduce((count, hint) => count + (hint.type === 'PART' ? 1 : 0), 0);\n        partCount += parts && parts.length ? parts.length : 0;\n        return partCount;\n    };\n    /**\n     * Get the number of seconds to delay from the end of a\n     * live playlist.\n     *\n     * @param {Playlist} main the main playlist\n     * @param {Playlist} media the media playlist\n     * @return {number} the hold back in seconds.\n     */\n\n    const liveEdgeDelay = (main, media) => {\n        if (media.endList) {\n            return 0;\n        } // dash suggestedPresentationDelay trumps everything\n\n        if (main && main.suggestedPresentationDelay) {\n            return main.suggestedPresentationDelay;\n        }\n        const hasParts = getLastParts(media).length > 0; // look for \"part\" delays from ll-hls first\n\n        if (hasParts && media.serverControl && media.serverControl.partHoldBack) {\n            return media.serverControl.partHoldBack;\n        } else if (hasParts && media.partTargetDuration) {\n            return media.partTargetDuration * 3; // finally look for full segment delays\n        } else if (media.serverControl && media.serverControl.holdBack) {\n            return media.serverControl.holdBack;\n        } else if (media.targetDuration) {\n            return media.targetDuration * 3;\n        }\n        return 0;\n    };\n    /**\n     * walk backward until we find a duration we can use\n     * or return a failure\n     *\n     * @param {Playlist} playlist the playlist to walk through\n     * @param {Number} endSequence the mediaSequence to stop walking on\n     */\n\n    const backwardDuration = function (playlist, endSequence) {\n        let result = 0;\n        let i = endSequence - playlist.mediaSequence; // if a start time is available for segment immediately following\n        // the interval, use it\n\n        let segment = playlist.segments[i]; // Walk backward until we find the latest segment with timeline\n        // information that is earlier than endSequence\n\n        if (segment) {\n            if (typeof segment.start !== 'undefined') {\n                return {\n                    result: segment.start,\n                    precise: true\n                };\n            }\n            if (typeof segment.end !== 'undefined') {\n                return {\n                    result: segment.end - segment.duration,\n                    precise: true\n                };\n            }\n        }\n        while (i--) {\n            segment = playlist.segments[i];\n            if (typeof segment.end !== 'undefined') {\n                return {\n                    result: result + segment.end,\n                    precise: true\n                };\n            }\n            result += segmentDurationWithParts(playlist, segment);\n            if (typeof segment.start !== 'undefined') {\n                return {\n                    result: result + segment.start,\n                    precise: true\n                };\n            }\n        }\n        return {\n            result,\n            precise: false\n        };\n    };\n    /**\n     * walk forward until we find a duration we can use\n     * or return a failure\n     *\n     * @param {Playlist} playlist the playlist to walk through\n     * @param {number} endSequence the mediaSequence to stop walking on\n     */\n\n    const forwardDuration = function (playlist, endSequence) {\n        let result = 0;\n        let segment;\n        let i = endSequence - playlist.mediaSequence; // Walk forward until we find the earliest segment with timeline\n        // information\n\n        for (; i < playlist.segments.length; i++) {\n            segment = playlist.segments[i];\n            if (typeof segment.start !== 'undefined') {\n                return {\n                    result: segment.start - result,\n                    precise: true\n                };\n            }\n            result += segmentDurationWithParts(playlist, segment);\n            if (typeof segment.end !== 'undefined') {\n                return {\n                    result: segment.end - result,\n                    precise: true\n                };\n            }\n        } // indicate we didn't find a useful duration estimate\n\n        return {\n            result: -1,\n            precise: false\n        };\n    };\n    /**\n     * Calculate the media duration from the segments associated with a\n     * playlist. The duration of a subinterval of the available segments\n     * may be calculated by specifying an end index.\n     *\n     * @param {Object} playlist a media playlist object\n     * @param {number=} endSequence an exclusive upper boundary\n     * for the playlist.  Defaults to playlist length.\n     * @param {number} expired the amount of time that has dropped\n     * off the front of the playlist in a live scenario\n     * @return {number} the duration between the first available segment\n     * and end index.\n     */\n\n    const intervalDuration = function (playlist, endSequence, expired) {\n        if (typeof endSequence === 'undefined') {\n            endSequence = playlist.mediaSequence + playlist.segments.length;\n        }\n        if (endSequence < playlist.mediaSequence) {\n            return 0;\n        } // do a backward walk to estimate the duration\n\n        const backward = backwardDuration(playlist, endSequence);\n        if (backward.precise) {\n            // if we were able to base our duration estimate on timing\n            // information provided directly from the Media Source, return\n            // it\n            return backward.result;\n        } // walk forward to see if a precise duration estimate can be made\n        // that way\n\n        const forward = forwardDuration(playlist, endSequence);\n        if (forward.precise) {\n            // we found a segment that has been buffered and so it's\n            // position is known precisely\n            return forward.result;\n        } // return the less-precise, playlist-based duration estimate\n\n        return backward.result + expired;\n    };\n    /**\n     * Calculates the duration of a playlist. If a start and end index\n     * are specified, the duration will be for the subset of the media\n     * timeline between those two indices. The total duration for live\n     * playlists is always Infinity.\n     *\n     * @param {Object} playlist a media playlist object\n     * @param {number=} endSequence an exclusive upper\n     * boundary for the playlist. Defaults to the playlist media\n     * sequence number plus its length.\n     * @param {number=} expired the amount of time that has\n     * dropped off the front of the playlist in a live scenario\n     * @return {number} the duration between the start index and end\n     * index.\n     */\n\n    const duration = function (playlist, endSequence, expired) {\n        if (!playlist) {\n            return 0;\n        }\n        if (typeof expired !== 'number') {\n            expired = 0;\n        } // if a slice of the total duration is not requested, use\n        // playlist-level duration indicators when they're present\n\n        if (typeof endSequence === 'undefined') {\n            // if present, use the duration specified in the playlist\n            if (playlist.totalDuration) {\n                return playlist.totalDuration;\n            } // duration should be Infinity for live playlists\n\n            if (!playlist.endList) {\n                return window.Infinity;\n            }\n        } // calculate the total duration based on the segment durations\n\n        return intervalDuration(playlist, endSequence, expired);\n    };\n    /**\n     * Calculate the time between two indexes in the current playlist\n     * neight the start- nor the end-index need to be within the current\n     * playlist in which case, the targetDuration of the playlist is used\n     * to approximate the durations of the segments\n     *\n     * @param {Array} options.durationList list to iterate over for durations.\n     * @param {number} options.defaultDuration duration to use for elements before or after the durationList\n     * @param {number} options.startIndex partsAndSegments index to start\n     * @param {number} options.endIndex partsAndSegments index to end.\n     * @return {number} the number of seconds between startIndex and endIndex\n     */\n\n    const sumDurations = function ({\n                                       defaultDuration,\n                                       durationList,\n                                       startIndex,\n                                       endIndex\n                                   }) {\n        let durations = 0;\n        if (startIndex > endIndex) {\n            [startIndex, endIndex] = [endIndex, startIndex];\n        }\n        if (startIndex < 0) {\n            for (let i = startIndex; i < Math.min(0, endIndex); i++) {\n                durations += defaultDuration;\n            }\n            startIndex = 0;\n        }\n        for (let i = startIndex; i < endIndex; i++) {\n            durations += durationList[i].duration;\n        }\n        return durations;\n    };\n    /**\n     * Calculates the playlist end time\n     *\n     * @param {Object} playlist a media playlist object\n     * @param {number=} expired the amount of time that has\n     *                  dropped off the front of the playlist in a live scenario\n     * @param {boolean|false} useSafeLiveEnd a boolean value indicating whether or not the\n     *                        playlist end calculation should consider the safe live end\n     *                        (truncate the playlist end by three segments). This is normally\n     *                        used for calculating the end of the playlist's seekable range.\n     *                        This takes into account the value of liveEdgePadding.\n     *                        Setting liveEdgePadding to 0 is equivalent to setting this to false.\n     * @param {number} liveEdgePadding a number indicating how far from the end of the playlist we should be in seconds.\n     *                 If this is provided, it is used in the safe live end calculation.\n     *                 Setting useSafeLiveEnd=false or liveEdgePadding=0 are equivalent.\n     *                 Corresponds to suggestedPresentationDelay in DASH manifests.\n     * @return {number} the end time of playlist\n     * @function playlistEnd\n     */\n\n    const playlistEnd = function (playlist, expired, useSafeLiveEnd, liveEdgePadding) {\n        if (!playlist || !playlist.segments) {\n            return null;\n        }\n        if (playlist.endList) {\n            return duration(playlist);\n        }\n        if (expired === null) {\n            return null;\n        }\n        expired = expired || 0;\n        let lastSegmentEndTime = intervalDuration(playlist, playlist.mediaSequence + playlist.segments.length, expired);\n        if (useSafeLiveEnd) {\n            liveEdgePadding = typeof liveEdgePadding === 'number' ? liveEdgePadding : liveEdgeDelay(null, playlist);\n            lastSegmentEndTime -= liveEdgePadding;\n        } // don't return a time less than zero\n\n        return Math.max(0, lastSegmentEndTime);\n    };\n    /**\n     * Calculates the interval of time that is currently seekable in a\n     * playlist. The returned time ranges are relative to the earliest\n     * moment in the specified playlist that is still available. A full\n     * seekable implementation for live streams would need to offset\n     * these values by the duration of content that has expired from the\n     * stream.\n     *\n     * @param {Object} playlist a media playlist object\n     * dropped off the front of the playlist in a live scenario\n     * @param {number=} expired the amount of time that has\n     * dropped off the front of the playlist in a live scenario\n     * @param {number} liveEdgePadding how far from the end of the playlist we should be in seconds.\n     *        Corresponds to suggestedPresentationDelay in DASH manifests.\n     * @return {TimeRanges} the periods of time that are valid targets\n     * for seeking\n     */\n\n    const seekable = function (playlist, expired, liveEdgePadding) {\n        const useSafeLiveEnd = true;\n        const seekableStart = expired || 0;\n        let seekableEnd = playlistEnd(playlist, expired, useSafeLiveEnd, liveEdgePadding);\n        if (seekableEnd === null) {\n            return createTimeRanges();\n        } // Clamp seekable end since it can not be less than the seekable start\n\n        if (seekableEnd < seekableStart) {\n            seekableEnd = seekableStart;\n        }\n        return createTimeRanges(seekableStart, seekableEnd);\n    };\n    /**\n     * Determine the index and estimated starting time of the segment that\n     * contains a specified playback position in a media playlist.\n     *\n     * @param {Object} options.playlist the media playlist to query\n     * @param {number} options.currentTime The number of seconds since the earliest\n     * possible position to determine the containing segment for\n     * @param {number} options.startTime the time when the segment/part starts\n     * @param {number} options.startingSegmentIndex the segment index to start looking at.\n     * @param {number?} [options.startingPartIndex] the part index to look at within the segment.\n     *\n     * @return {Object} an object with partIndex, segmentIndex, and startTime.\n     */\n\n    const getMediaInfoForTime = function ({\n                                              playlist,\n                                              currentTime,\n                                              startingSegmentIndex,\n                                              startingPartIndex,\n                                              startTime,\n                                              exactManifestTimings\n                                          }) {\n        let time = currentTime - startTime;\n        const partsAndSegments = getPartsAndSegments(playlist);\n        let startIndex = 0;\n        for (let i = 0; i < partsAndSegments.length; i++) {\n            const partAndSegment = partsAndSegments[i];\n            if (startingSegmentIndex !== partAndSegment.segmentIndex) {\n                continue;\n            } // skip this if part index does not match.\n\n            if (typeof startingPartIndex === 'number' && typeof partAndSegment.partIndex === 'number' && startingPartIndex !== partAndSegment.partIndex) {\n                continue;\n            }\n            startIndex = i;\n            break;\n        }\n        if (time < 0) {\n            // Walk backward from startIndex in the playlist, adding durations\n            // until we find a segment that contains `time` and return it\n            if (startIndex > 0) {\n                for (let i = startIndex - 1; i >= 0; i--) {\n                    const partAndSegment = partsAndSegments[i];\n                    time += partAndSegment.duration;\n                    if (exactManifestTimings) {\n                        if (time < 0) {\n                            continue;\n                        }\n                    } else if (time + TIME_FUDGE_FACTOR <= 0) {\n                        continue;\n                    }\n                    return {\n                        partIndex: partAndSegment.partIndex,\n                        segmentIndex: partAndSegment.segmentIndex,\n                        startTime: startTime - sumDurations({\n                            defaultDuration: playlist.targetDuration,\n                            durationList: partsAndSegments,\n                            startIndex,\n                            endIndex: i\n                        })\n                    };\n                }\n            } // We were unable to find a good segment within the playlist\n            // so select the first segment\n\n            return {\n                partIndex: partsAndSegments[0] && partsAndSegments[0].partIndex || null,\n                segmentIndex: partsAndSegments[0] && partsAndSegments[0].segmentIndex || 0,\n                startTime: currentTime\n            };\n        } // When startIndex is negative, we first walk forward to first segment\n        // adding target durations. If we \"run out of time\" before getting to\n        // the first segment, return the first segment\n\n        if (startIndex < 0) {\n            for (let i = startIndex; i < 0; i++) {\n                time -= playlist.targetDuration;\n                if (time < 0) {\n                    return {\n                        partIndex: partsAndSegments[0] && partsAndSegments[0].partIndex || null,\n                        segmentIndex: partsAndSegments[0] && partsAndSegments[0].segmentIndex || 0,\n                        startTime: currentTime\n                    };\n                }\n            }\n            startIndex = 0;\n        } // Walk forward from startIndex in the playlist, subtracting durations\n        // until we find a segment that contains `time` and return it\n\n        for (let i = startIndex; i < partsAndSegments.length; i++) {\n            const partAndSegment = partsAndSegments[i];\n            time -= partAndSegment.duration;\n            const canUseFudgeFactor = partAndSegment.duration > TIME_FUDGE_FACTOR;\n            const isExactlyAtTheEnd = time === 0;\n            const isExtremelyCloseToTheEnd = canUseFudgeFactor && time + TIME_FUDGE_FACTOR >= 0;\n            if (isExactlyAtTheEnd || isExtremelyCloseToTheEnd) {\n                // 1) We are exactly at the end of the current segment.\n                // 2) We are extremely close to the end of the current segment (The difference is less than  1 / 30).\n                //    We may encounter this situation when\n                //    we don't have exact match between segment duration info in the manifest and the actual duration of the segment\n                //    For example:\n                //    We appended 3 segments 10 seconds each, meaning we should have 30 sec buffered,\n                //    but we the actual buffered is 29.99999\n                //\n                // In both cases:\n                // if we passed current time -> it means that we already played current segment\n                // if we passed buffered.end -> it means that this segment is already loaded and buffered\n                // we should select the next segment if we have one:\n                if (i !== partsAndSegments.length - 1) {\n                    continue;\n                }\n            }\n            if (exactManifestTimings) {\n                if (time > 0) {\n                    continue;\n                }\n            } else if (time - TIME_FUDGE_FACTOR >= 0) {\n                continue;\n            }\n            return {\n                partIndex: partAndSegment.partIndex,\n                segmentIndex: partAndSegment.segmentIndex,\n                startTime: startTime + sumDurations({\n                    defaultDuration: playlist.targetDuration,\n                    durationList: partsAndSegments,\n                    startIndex,\n                    endIndex: i\n                })\n            };\n        } // We are out of possible candidates so load the last one...\n\n        return {\n            segmentIndex: partsAndSegments[partsAndSegments.length - 1].segmentIndex,\n            partIndex: partsAndSegments[partsAndSegments.length - 1].partIndex,\n            startTime: currentTime\n        };\n    };\n    /**\n     * Check whether the playlist is excluded or not.\n     *\n     * @param {Object} playlist the media playlist object\n     * @return {boolean} whether the playlist is excluded or not\n     * @function isExcluded\n     */\n\n    const isExcluded = function (playlist) {\n        return playlist.excludeUntil && playlist.excludeUntil > Date.now();\n    };\n    /**\n     * Check whether the playlist is compatible with current playback configuration or has\n     * been excluded permanently for being incompatible.\n     *\n     * @param {Object} playlist the media playlist object\n     * @return {boolean} whether the playlist is incompatible or not\n     * @function isIncompatible\n     */\n\n    const isIncompatible = function (playlist) {\n        return playlist.excludeUntil && playlist.excludeUntil === Infinity;\n    };\n    /**\n     * Check whether the playlist is enabled or not.\n     *\n     * @param {Object} playlist the media playlist object\n     * @return {boolean} whether the playlist is enabled or not\n     * @function isEnabled\n     */\n\n    const isEnabled = function (playlist) {\n        const excluded = isExcluded(playlist);\n        return !playlist.disabled && !excluded;\n    };\n    /**\n     * Check whether the playlist has been manually disabled through the representations api.\n     *\n     * @param {Object} playlist the media playlist object\n     * @return {boolean} whether the playlist is disabled manually or not\n     * @function isDisabled\n     */\n\n    const isDisabled = function (playlist) {\n        return playlist.disabled;\n    };\n    /**\n     * Returns whether the current playlist is an AES encrypted HLS stream\n     *\n     * @return {boolean} true if it's an AES encrypted HLS stream\n     */\n\n    const isAes = function (media) {\n        for (let i = 0; i < media.segments.length; i++) {\n            if (media.segments[i].key) {\n                return true;\n            }\n        }\n        return false;\n    };\n    /**\n     * Checks if the playlist has a value for the specified attribute\n     *\n     * @param {string} attr\n     *        Attribute to check for\n     * @param {Object} playlist\n     *        The media playlist object\n     * @return {boolean}\n     *         Whether the playlist contains a value for the attribute or not\n     * @function hasAttribute\n     */\n\n    const hasAttribute = function (attr, playlist) {\n        return playlist.attributes && playlist.attributes[attr];\n    };\n    /**\n     * Estimates the time required to complete a segment download from the specified playlist\n     *\n     * @param {number} segmentDuration\n     *        Duration of requested segment\n     * @param {number} bandwidth\n     *        Current measured bandwidth of the player\n     * @param {Object} playlist\n     *        The media playlist object\n     * @param {number=} bytesReceived\n     *        Number of bytes already received for the request. Defaults to 0\n     * @return {number|NaN}\n     *         The estimated time to request the segment. NaN if bandwidth information for\n     *         the given playlist is unavailable\n     * @function estimateSegmentRequestTime\n     */\n\n    const estimateSegmentRequestTime = function (segmentDuration, bandwidth, playlist, bytesReceived = 0) {\n        if (!hasAttribute('BANDWIDTH', playlist)) {\n            return NaN;\n        }\n        const size = segmentDuration * playlist.attributes.BANDWIDTH;\n        return (size - bytesReceived * 8) / bandwidth;\n    };\n    /*\n   * Returns whether the current playlist is the lowest rendition\n   *\n   * @return {Boolean} true if on lowest rendition\n   */\n\n    const isLowestEnabledRendition = (main, media) => {\n        if (main.playlists.length === 1) {\n            return true;\n        }\n        const currentBandwidth = media.attributes.BANDWIDTH || Number.MAX_VALUE;\n        return main.playlists.filter(playlist => {\n            if (!isEnabled(playlist)) {\n                return false;\n            }\n            return (playlist.attributes.BANDWIDTH || 0) < currentBandwidth;\n        }).length === 0;\n    };\n    const playlistMatch = (a, b) => {\n        // both playlits are null\n        // or only one playlist is non-null\n        // no match\n        if (!a && !b || !a && b || a && !b) {\n            return false;\n        } // playlist objects are the same, match\n\n        if (a === b) {\n            return true;\n        } // first try to use id as it should be the most\n        // accurate\n\n        if (a.id && b.id && a.id === b.id) {\n            return true;\n        } // next try to use reslovedUri as it should be the\n        // second most accurate.\n\n        if (a.resolvedUri && b.resolvedUri && a.resolvedUri === b.resolvedUri) {\n            return true;\n        } // finally try to use uri as it should be accurate\n        // but might miss a few cases for relative uris\n\n        if (a.uri && b.uri && a.uri === b.uri) {\n            return true;\n        }\n        return false;\n    };\n    const someAudioVariant = function (main, callback) {\n        const AUDIO = main && main.mediaGroups && main.mediaGroups.AUDIO || {};\n        let found = false;\n        for (const groupName in AUDIO) {\n            for (const label in AUDIO[groupName]) {\n                found = callback(AUDIO[groupName][label]);\n                if (found) {\n                    break;\n                }\n            }\n            if (found) {\n                break;\n            }\n        }\n        return !!found;\n    };\n    const isAudioOnly = main => {\n        // we are audio only if we have no main playlists but do\n        // have media group playlists.\n        if (!main || !main.playlists || !main.playlists.length) {\n            // without audio variants or playlists this\n            // is not an audio only main.\n            const found = someAudioVariant(main, variant => variant.playlists && variant.playlists.length || variant.uri);\n            return found;\n        } // if every playlist has only an audio codec it is audio only\n\n        for (let i = 0; i < main.playlists.length; i++) {\n            const playlist = main.playlists[i];\n            const CODECS = playlist.attributes && playlist.attributes.CODECS; // all codecs are audio, this is an audio playlist.\n\n            if (CODECS && CODECS.split(',').every(c => isAudioCodec(c))) {\n                continue;\n            } // playlist is in an audio group it is audio only\n\n            const found = someAudioVariant(main, variant => playlistMatch(playlist, variant));\n            if (found) {\n                continue;\n            } // if we make it here this playlist isn't audio and we\n            // are not audio only\n\n            return false;\n        } // if we make it past every playlist without returning, then\n        // this is an audio only playlist.\n\n        return true;\n    }; // exports\n\n    var Playlist = {\n        liveEdgeDelay,\n        duration,\n        seekable,\n        getMediaInfoForTime,\n        isEnabled,\n        isDisabled,\n        isExcluded,\n        isIncompatible,\n        playlistEnd,\n        isAes,\n        hasAttribute,\n        estimateSegmentRequestTime,\n        isLowestEnabledRendition,\n        isAudioOnly,\n        playlistMatch,\n        segmentDurationWithParts\n    };\n    const {\n        log\n    } = videojs;\n    const createPlaylistID = (index, uri) => {\n        return `${index}-${uri}`;\n    }; // default function for creating a group id\n\n    const groupID = (type, group, label) => {\n        return `placeholder-uri-${type}-${group}-${label}`;\n    };\n    /**\n     * Parses a given m3u8 playlist\n     *\n     * @param {Function} [onwarn]\n     *        a function to call when the parser triggers a warning event.\n     * @param {Function} [oninfo]\n     *        a function to call when the parser triggers an info event.\n     * @param {string} manifestString\n     *        The downloaded manifest string\n     * @param {Object[]} [customTagParsers]\n     *        An array of custom tag parsers for the m3u8-parser instance\n     * @param {Object[]} [customTagMappers]\n     *        An array of custom tag mappers for the m3u8-parser instance\n     * @param {boolean} [llhls]\n     *        Whether to keep ll-hls features in the manifest after parsing.\n     * @return {Object}\n     *         The manifest object\n     */\n\n    const parseManifest = ({\n                               onwarn,\n                               oninfo,\n                               manifestString,\n                               customTagParsers = [],\n                               customTagMappers = [],\n                               llhls\n                           }) => {\n        const parser = new Parser();\n        if (onwarn) {\n            parser.on('warn', onwarn);\n        }\n        if (oninfo) {\n            parser.on('info', oninfo);\n        }\n        customTagParsers.forEach(customParser => parser.addParser(customParser));\n        customTagMappers.forEach(mapper => parser.addTagMapper(mapper));\n        parser.push(manifestString);\n        parser.end();\n        const manifest = parser.manifest; // remove llhls features from the parsed manifest\n        // if we don't want llhls support.\n\n        if (!llhls) {\n            ['preloadSegment', 'skip', 'serverControl', 'renditionReports', 'partInf', 'partTargetDuration'].forEach(function (k) {\n                if (manifest.hasOwnProperty(k)) {\n                    delete manifest[k];\n                }\n            });\n            if (manifest.segments) {\n                manifest.segments.forEach(function (segment) {\n                    ['parts', 'preloadHints'].forEach(function (k) {\n                        if (segment.hasOwnProperty(k)) {\n                            delete segment[k];\n                        }\n                    });\n                });\n            }\n        }\n        if (!manifest.targetDuration) {\n            let targetDuration = 10;\n            if (manifest.segments && manifest.segments.length) {\n                targetDuration = manifest.segments.reduce((acc, s) => Math.max(acc, s.duration), 0);\n            }\n            if (onwarn) {\n                onwarn({\n                    message: `manifest has no targetDuration defaulting to ${targetDuration}`\n                });\n            }\n            manifest.targetDuration = targetDuration;\n        }\n        const parts = getLastParts(manifest);\n        if (parts.length && !manifest.partTargetDuration) {\n            const partTargetDuration = parts.reduce((acc, p) => Math.max(acc, p.duration), 0);\n            if (onwarn) {\n                onwarn({\n                    message: `manifest has no partTargetDuration defaulting to ${partTargetDuration}`\n                });\n                log.error('LL-HLS manifest has parts but lacks required #EXT-X-PART-INF:PART-TARGET value. See https://datatracker.ietf.org/doc/html/draft-pantos-hls-rfc8216bis-09#section-4.4.3.7. Playback is not guaranteed.');\n            }\n            manifest.partTargetDuration = partTargetDuration;\n        }\n        return manifest;\n    };\n    /**\n     * Loops through all supported media groups in main and calls the provided\n     * callback for each group\n     *\n     * @param {Object} main\n     *        The parsed main manifest object\n     * @param {Function} callback\n     *        Callback to call for each media group\n     */\n\n    const forEachMediaGroup = (main, callback) => {\n        if (!main.mediaGroups) {\n            return;\n        }\n        ['AUDIO', 'SUBTITLES'].forEach(mediaType => {\n            if (!main.mediaGroups[mediaType]) {\n                return;\n            }\n            for (const groupKey in main.mediaGroups[mediaType]) {\n                for (const labelKey in main.mediaGroups[mediaType][groupKey]) {\n                    const mediaProperties = main.mediaGroups[mediaType][groupKey][labelKey];\n                    callback(mediaProperties, mediaType, groupKey, labelKey);\n                }\n            }\n        });\n    };\n    /**\n     * Adds properties and attributes to the playlist to keep consistent functionality for\n     * playlists throughout VHS.\n     *\n     * @param {Object} config\n     *        Arguments object\n     * @param {Object} config.playlist\n     *        The media playlist\n     * @param {string} [config.uri]\n     *        The uri to the media playlist (if media playlist is not from within a main\n     *        playlist)\n     * @param {string} id\n     *        ID to use for the playlist\n     */\n\n    const setupMediaPlaylist = ({\n                                    playlist,\n                                    uri,\n                                    id\n                                }) => {\n        playlist.id = id;\n        playlist.playlistErrors_ = 0;\n        if (uri) {\n            // For media playlists, m3u8-parser does not have access to a URI, as HLS media\n            // playlists do not contain their own source URI, but one is needed for consistency in\n            // VHS.\n            playlist.uri = uri;\n        } // For HLS main playlists, even though certain attributes MUST be defined, the\n        // stream may still be played without them.\n        // For HLS media playlists, m3u8-parser does not attach an attributes object to the\n        // manifest.\n        //\n        // To avoid undefined reference errors through the project, and make the code easier\n        // to write/read, add an empty attributes object for these cases.\n\n        playlist.attributes = playlist.attributes || {};\n    };\n    /**\n     * Adds ID, resolvedUri, and attributes properties to each playlist of the main, where\n     * necessary. In addition, creates playlist IDs for each playlist and adds playlist ID to\n     * playlist references to the playlists array.\n     *\n     * @param {Object} main\n     *        The main playlist\n     */\n\n    const setupMediaPlaylists = main => {\n        let i = main.playlists.length;\n        while (i--) {\n            const playlist = main.playlists[i];\n            setupMediaPlaylist({\n                playlist,\n                id: createPlaylistID(i, playlist.uri)\n            });\n            playlist.resolvedUri = resolveUrl(main.uri, playlist.uri);\n            main.playlists[playlist.id] = playlist; // URI reference added for backwards compatibility\n\n            main.playlists[playlist.uri] = playlist; // Although the spec states an #EXT-X-STREAM-INF tag MUST have a BANDWIDTH attribute,\n            // the stream can be played without it. Although an attributes property may have been\n            // added to the playlist to prevent undefined references, issue a warning to fix the\n            // manifest.\n\n            if (!playlist.attributes.BANDWIDTH) {\n                log.warn('Invalid playlist STREAM-INF detected. Missing BANDWIDTH attribute.');\n            }\n        }\n    };\n    /**\n     * Adds resolvedUri properties to each media group.\n     *\n     * @param {Object} main\n     *        The main playlist\n     */\n\n    const resolveMediaGroupUris = main => {\n        forEachMediaGroup(main, properties => {\n            if (properties.uri) {\n                properties.resolvedUri = resolveUrl(main.uri, properties.uri);\n            }\n        });\n    };\n    /**\n     * Creates a main playlist wrapper to insert a sole media playlist into.\n     *\n     * @param {Object} media\n     *        Media playlist\n     * @param {string} uri\n     *        The media URI\n     *\n     * @return {Object}\n     *         main playlist\n     */\n\n    const mainForMedia = (media, uri) => {\n        const id = createPlaylistID(0, uri);\n        const main = {\n            mediaGroups: {\n                'AUDIO': {},\n                'VIDEO': {},\n                'CLOSED-CAPTIONS': {},\n                'SUBTITLES': {}\n            },\n            uri: window.location.href,\n            resolvedUri: window.location.href,\n            playlists: [{\n                uri,\n                id,\n                resolvedUri: uri,\n                // m3u8-parser does not attach an attributes property to media playlists so make\n                // sure that the property is attached to avoid undefined reference errors\n                attributes: {}\n            }]\n        }; // set up ID reference\n\n        main.playlists[id] = main.playlists[0]; // URI reference added for backwards compatibility\n\n        main.playlists[uri] = main.playlists[0];\n        return main;\n    };\n    /**\n     * Does an in-place update of the main manifest to add updated playlist URI references\n     * as well as other properties needed by VHS that aren't included by the parser.\n     *\n     * @param {Object} main\n     *        main manifest object\n     * @param {string} uri\n     *        The source URI\n     * @param {function} createGroupID\n     *        A function to determine how to create the groupID for mediaGroups\n     */\n\n    const addPropertiesToMain = (main, uri, createGroupID = groupID) => {\n        main.uri = uri;\n        for (let i = 0; i < main.playlists.length; i++) {\n            if (!main.playlists[i].uri) {\n                // Set up phony URIs for the playlists since playlists are referenced by their URIs\n                // throughout VHS, but some formats (e.g., DASH) don't have external URIs\n                // TODO: consider adding dummy URIs in mpd-parser\n                const phonyUri = `placeholder-uri-${i}`;\n                main.playlists[i].uri = phonyUri;\n            }\n        }\n        const audioOnlyMain = isAudioOnly(main);\n        forEachMediaGroup(main, (properties, mediaType, groupKey, labelKey) => {\n            // add a playlist array under properties\n            if (!properties.playlists || !properties.playlists.length) {\n                // If the manifest is audio only and this media group does not have a uri, check\n                // if the media group is located in the main list of playlists. If it is, don't add\n                // placeholder properties as it shouldn't be considered an alternate audio track.\n                if (audioOnlyMain && mediaType === 'AUDIO' && !properties.uri) {\n                    for (let i = 0; i < main.playlists.length; i++) {\n                        const p = main.playlists[i];\n                        if (p.attributes && p.attributes.AUDIO && p.attributes.AUDIO === groupKey) {\n                            return;\n                        }\n                    }\n                }\n                properties.playlists = [_extends$1({}, properties)];\n            }\n            properties.playlists.forEach(function (p, i) {\n                const groupId = createGroupID(mediaType, groupKey, labelKey, p);\n                const id = createPlaylistID(i, groupId);\n                if (p.uri) {\n                    p.resolvedUri = p.resolvedUri || resolveUrl(main.uri, p.uri);\n                } else {\n                    // DEPRECATED, this has been added to prevent a breaking change.\n                    // previously we only ever had a single media group playlist, so\n                    // we mark the first playlist uri without prepending the index as we used to\n                    // ideally we would do all of the playlists the same way.\n                    p.uri = i === 0 ? groupId : id; // don't resolve a placeholder uri to an absolute url, just use\n                    // the placeholder again\n\n                    p.resolvedUri = p.uri;\n                }\n                p.id = p.id || id; // add an empty attributes object, all playlists are\n                // expected to have this.\n\n                p.attributes = p.attributes || {}; // setup ID and URI references (URI for backwards compatibility)\n\n                main.playlists[p.id] = p;\n                main.playlists[p.uri] = p;\n            });\n        });\n        setupMediaPlaylists(main);\n        resolveMediaGroupUris(main);\n    };\n    class DateRangesStorage {\n        constructor() {\n            this.offset_ = null;\n            this.pendingDateRanges_ = new Map();\n            this.processedDateRanges_ = new Map();\n        }\n        setOffset(segments = []) {\n            // already set\n            if (this.offset_ !== null) {\n                return;\n            } // no segment to process\n\n            if (!segments.length) {\n                return;\n            }\n            const [firstSegment] = segments; // no program date time\n\n            if (firstSegment.programDateTime === undefined) {\n                return;\n            } // Set offset as ProgramDateTime for the very first segment of the very first playlist load:\n\n            this.offset_ = firstSegment.programDateTime / 1000;\n        }\n        setPendingDateRanges(dateRanges = []) {\n            if (!dateRanges.length) {\n                return;\n            }\n            const [dateRange] = dateRanges;\n            const startTime = dateRange.startDate.getTime();\n            this.trimProcessedDateRanges_(startTime);\n            this.pendingDateRanges_ = dateRanges.reduce((map, pendingDateRange) => {\n                map.set(pendingDateRange.id, pendingDateRange);\n                return map;\n            }, new Map());\n        }\n        processDateRange(dateRange) {\n            this.pendingDateRanges_.delete(dateRange.id);\n            this.processedDateRanges_.set(dateRange.id, dateRange);\n        }\n        getDateRangesToProcess() {\n            if (this.offset_ === null) {\n                return [];\n            }\n            const dateRangeClasses = {};\n            const dateRangesToProcess = [];\n            this.pendingDateRanges_.forEach((dateRange, id) => {\n                if (this.processedDateRanges_.has(id)) {\n                    return;\n                }\n                dateRange.startTime = dateRange.startDate.getTime() / 1000 - this.offset_;\n                dateRange.processDateRange = () => this.processDateRange(dateRange);\n                dateRangesToProcess.push(dateRange);\n                if (!dateRange.class) {\n                    return;\n                }\n                if (dateRangeClasses[dateRange.class]) {\n                    const length = dateRangeClasses[dateRange.class].push(dateRange);\n                    dateRange.classListIndex = length - 1;\n                } else {\n                    dateRangeClasses[dateRange.class] = [dateRange];\n                    dateRange.classListIndex = 0;\n                }\n            });\n            for (const dateRange of dateRangesToProcess) {\n                const classList = dateRangeClasses[dateRange.class] || [];\n                if (dateRange.endDate) {\n                    dateRange.endTime = dateRange.endDate.getTime() / 1000 - this.offset_;\n                } else if (dateRange.endOnNext && classList[dateRange.classListIndex + 1]) {\n                    dateRange.endTime = classList[dateRange.classListIndex + 1].startTime;\n                } else if (dateRange.duration) {\n                    dateRange.endTime = dateRange.startTime + dateRange.duration;\n                } else if (dateRange.plannedDuration) {\n                    dateRange.endTime = dateRange.startTime + dateRange.plannedDuration;\n                } else {\n                    dateRange.endTime = dateRange.startTime;\n                }\n            }\n            return dateRangesToProcess;\n        }\n        trimProcessedDateRanges_(startTime) {\n            const copy = new Map(this.processedDateRanges_);\n            copy.forEach((dateRange, id) => {\n                if (dateRange.startDate.getTime() < startTime) {\n                    this.processedDateRanges_.delete(id);\n                }\n            });\n        }\n    }\n    const {\n        EventTarget: EventTarget$1\n    } = videojs;\n    const addLLHLSQueryDirectives = (uri, media) => {\n        if (media.endList || !media.serverControl) {\n            return uri;\n        }\n        const parameters = {};\n        if (media.serverControl.canBlockReload) {\n            const {\n                preloadSegment\n            } = media; // next msn is a zero based value, length is not.\n\n            let nextMSN = media.mediaSequence + media.segments.length; // If preload segment has parts then it is likely\n            // that we are going to request a part of that preload segment.\n            // the logic below is used to determine that.\n\n            if (preloadSegment) {\n                const parts = preloadSegment.parts || []; // _HLS_part is a zero based index\n\n                const nextPart = getKnownPartCount(media) - 1; // if nextPart is > -1 and not equal to just the\n                // length of parts, then we know we had part preload hints\n                // and we need to add the _HLS_part= query\n\n                if (nextPart > -1 && nextPart !== parts.length - 1) {\n                    // add existing parts to our preload hints\n                    // eslint-disable-next-line\n                    parameters._HLS_part = nextPart;\n                } // this if statement makes sure that we request the msn\n                // of the preload segment if:\n                // 1. the preload segment had parts (and was not yet a full segment)\n                //    but was added to our segments array\n                // 2. the preload segment had preload hints for parts that are not in\n                //    the manifest yet.\n                // in all other cases we want the segment after the preload segment\n                // which will be given by using media.segments.length because it is 1 based\n                // rather than 0 based.\n\n                if (nextPart > -1 || parts.length) {\n                    nextMSN--;\n                }\n            } // add _HLS_msn= in front of any _HLS_part query\n            // eslint-disable-next-line\n\n            parameters._HLS_msn = nextMSN;\n        }\n        if (media.serverControl && media.serverControl.canSkipUntil) {\n            // add _HLS_skip= infront of all other queries.\n            // eslint-disable-next-line\n            parameters._HLS_skip = media.serverControl.canSkipDateranges ? 'v2' : 'YES';\n        }\n        if (Object.keys(parameters).length) {\n            const parsedUri = new window.URL(uri);\n            ['_HLS_skip', '_HLS_msn', '_HLS_part'].forEach(function (name) {\n                if (!parameters.hasOwnProperty(name)) {\n                    return;\n                }\n                parsedUri.searchParams.set(name, parameters[name]);\n            });\n            uri = parsedUri.toString();\n        }\n        return uri;\n    };\n    /**\n     * Returns a new segment object with properties and\n     * the parts array merged.\n     *\n     * @param {Object} a the old segment\n     * @param {Object} b the new segment\n     *\n     * @return {Object} the merged segment\n     */\n\n    const updateSegment = (a, b) => {\n        if (!a) {\n            return b;\n        }\n        const result = merge(a, b); // if only the old segment has preload hints\n        // and the new one does not, remove preload hints.\n\n        if (a.preloadHints && !b.preloadHints) {\n            delete result.preloadHints;\n        } // if only the old segment has parts\n        // then the parts are no longer valid\n\n        if (a.parts && !b.parts) {\n            delete result.parts; // if both segments have parts\n            // copy part propeties from the old segment\n            // to the new one.\n        } else if (a.parts && b.parts) {\n            for (let i = 0; i < b.parts.length; i++) {\n                if (a.parts && a.parts[i]) {\n                    result.parts[i] = merge(a.parts[i], b.parts[i]);\n                }\n            }\n        } // set skipped to false for segments that have\n        // have had information merged from the old segment.\n\n        if (!a.skipped && b.skipped) {\n            result.skipped = false;\n        } // set preload to false for segments that have\n        // had information added in the new segment.\n\n        if (a.preload && !b.preload) {\n            result.preload = false;\n        }\n        return result;\n    };\n    /**\n     * Returns a new array of segments that is the result of merging\n     * properties from an older list of segments onto an updated\n     * list. No properties on the updated playlist will be ovewritten.\n     *\n     * @param {Array} original the outdated list of segments\n     * @param {Array} update the updated list of segments\n     * @param {number=} offset the index of the first update\n     * segment in the original segment list. For non-live playlists,\n     * this should always be zero and does not need to be\n     * specified. For live playlists, it should be the difference\n     * between the media sequence numbers in the original and updated\n     * playlists.\n     * @return {Array} a list of merged segment objects\n     */\n\n    const updateSegments = (original, update, offset) => {\n        const oldSegments = original.slice();\n        const newSegments = update.slice();\n        offset = offset || 0;\n        const result = [];\n        let currentMap;\n        for (let newIndex = 0; newIndex < newSegments.length; newIndex++) {\n            const oldSegment = oldSegments[newIndex + offset];\n            const newSegment = newSegments[newIndex];\n            if (oldSegment) {\n                currentMap = oldSegment.map || currentMap;\n                result.push(updateSegment(oldSegment, newSegment));\n            } else {\n                // carry over map to new segment if it is missing\n                if (currentMap && !newSegment.map) {\n                    newSegment.map = currentMap;\n                }\n                result.push(newSegment);\n            }\n        }\n        return result;\n    };\n    const resolveSegmentUris = (segment, baseUri) => {\n        // preloadSegment will not have a uri at all\n        // as the segment isn't actually in the manifest yet, only parts\n        if (!segment.resolvedUri && segment.uri) {\n            segment.resolvedUri = resolveUrl(baseUri, segment.uri);\n        }\n        if (segment.key && !segment.key.resolvedUri) {\n            segment.key.resolvedUri = resolveUrl(baseUri, segment.key.uri);\n        }\n        if (segment.map && !segment.map.resolvedUri) {\n            segment.map.resolvedUri = resolveUrl(baseUri, segment.map.uri);\n        }\n        if (segment.map && segment.map.key && !segment.map.key.resolvedUri) {\n            segment.map.key.resolvedUri = resolveUrl(baseUri, segment.map.key.uri);\n        }\n        if (segment.parts && segment.parts.length) {\n            segment.parts.forEach(p => {\n                if (p.resolvedUri) {\n                    return;\n                }\n                p.resolvedUri = resolveUrl(baseUri, p.uri);\n            });\n        }\n        if (segment.preloadHints && segment.preloadHints.length) {\n            segment.preloadHints.forEach(p => {\n                if (p.resolvedUri) {\n                    return;\n                }\n                p.resolvedUri = resolveUrl(baseUri, p.uri);\n            });\n        }\n    };\n    const getAllSegments = function (media) {\n        const segments = media.segments || [];\n        const preloadSegment = media.preloadSegment; // a preloadSegment with only preloadHints is not currently\n        // a usable segment, only include a preloadSegment that has\n        // parts.\n\n        if (preloadSegment && preloadSegment.parts && preloadSegment.parts.length) {\n            // if preloadHints has a MAP that means that the\n            // init segment is going to change. We cannot use any of the parts\n            // from this preload segment.\n            if (preloadSegment.preloadHints) {\n                for (let i = 0; i < preloadSegment.preloadHints.length; i++) {\n                    if (preloadSegment.preloadHints[i].type === 'MAP') {\n                        return segments;\n                    }\n                }\n            } // set the duration for our preload segment to target duration.\n\n            preloadSegment.duration = media.targetDuration;\n            preloadSegment.preload = true;\n            segments.push(preloadSegment);\n        }\n        return segments;\n    }; // consider the playlist unchanged if the playlist object is the same or\n    // the number of segments is equal, the media sequence number is unchanged,\n    // and this playlist hasn't become the end of the playlist\n\n    const isPlaylistUnchanged = (a, b) => a === b || a.segments && b.segments && a.segments.length === b.segments.length && a.endList === b.endList && a.mediaSequence === b.mediaSequence && a.preloadSegment === b.preloadSegment;\n    /**\n     * Returns a new main playlist that is the result of merging an\n     * updated media playlist into the original version. If the\n     * updated media playlist does not match any of the playlist\n     * entries in the original main playlist, null is returned.\n     *\n     * @param {Object} main a parsed main M3U8 object\n     * @param {Object} media a parsed media M3U8 object\n     * @return {Object} a new object that represents the original\n     * main playlist with the updated media playlist merged in, or\n     * null if the merge produced no change.\n     */\n\n    const updateMain$1 = (main, newMedia, unchangedCheck = isPlaylistUnchanged) => {\n        const result = merge(main, {});\n        const oldMedia = result.playlists[newMedia.id];\n        if (!oldMedia) {\n            return null;\n        }\n        if (unchangedCheck(oldMedia, newMedia)) {\n            return null;\n        }\n        newMedia.segments = getAllSegments(newMedia);\n        const mergedPlaylist = merge(oldMedia, newMedia); // always use the new media's preload segment\n\n        if (mergedPlaylist.preloadSegment && !newMedia.preloadSegment) {\n            delete mergedPlaylist.preloadSegment;\n        } // if the update could overlap existing segment information, merge the two segment lists\n\n        if (oldMedia.segments) {\n            if (newMedia.skip) {\n                newMedia.segments = newMedia.segments || []; // add back in objects for skipped segments, so that we merge\n                // old properties into the new segments\n\n                for (let i = 0; i < newMedia.skip.skippedSegments; i++) {\n                    newMedia.segments.unshift({\n                        skipped: true\n                    });\n                }\n            }\n            mergedPlaylist.segments = updateSegments(oldMedia.segments, newMedia.segments, newMedia.mediaSequence - oldMedia.mediaSequence);\n        } // resolve any segment URIs to prevent us from having to do it later\n\n        mergedPlaylist.segments.forEach(segment => {\n            resolveSegmentUris(segment, mergedPlaylist.resolvedUri);\n        }); // TODO Right now in the playlists array there are two references to each playlist, one\n        // that is referenced by index, and one by URI. The index reference may no longer be\n        // necessary.\n\n        for (let i = 0; i < result.playlists.length; i++) {\n            if (result.playlists[i].id === newMedia.id) {\n                result.playlists[i] = mergedPlaylist;\n            }\n        }\n        result.playlists[newMedia.id] = mergedPlaylist; // URI reference added for backwards compatibility\n\n        result.playlists[newMedia.uri] = mergedPlaylist; // update media group playlist references.\n\n        forEachMediaGroup(main, (properties, mediaType, groupKey, labelKey) => {\n            if (!properties.playlists) {\n                return;\n            }\n            for (let i = 0; i < properties.playlists.length; i++) {\n                if (newMedia.id === properties.playlists[i].id) {\n                    properties.playlists[i] = mergedPlaylist;\n                }\n            }\n        });\n        return result;\n    };\n    /**\n     * Calculates the time to wait before refreshing a live playlist\n     *\n     * @param {Object} media\n     *        The current media\n     * @param {boolean} update\n     *        True if there were any updates from the last refresh, false otherwise\n     * @return {number}\n     *         The time in ms to wait before refreshing the live playlist\n     */\n\n    const refreshDelay = (media, update) => {\n        const segments = media.segments || [];\n        const lastSegment = segments[segments.length - 1];\n        const lastPart = lastSegment && lastSegment.parts && lastSegment.parts[lastSegment.parts.length - 1];\n        const lastDuration = lastPart && lastPart.duration || lastSegment && lastSegment.duration;\n        if (update && lastDuration) {\n            return lastDuration * 1000;\n        } // if the playlist is unchanged since the last reload or last segment duration\n        // cannot be determined, try again after half the target duration\n\n        return (media.partTargetDuration || media.targetDuration || 10) * 500;\n    };\n    /**\n     * Load a playlist from a remote location\n     *\n     * @class PlaylistLoader\n     * @extends Stream\n     * @param {string|Object} src url or object of manifest\n     * @param {boolean} withCredentials the withCredentials xhr option\n     * @class\n     */\n\n    class PlaylistLoader extends EventTarget$1 {\n        constructor(src, vhs, options = {}) {\n            super();\n            if (!src) {\n                throw new Error('A non-empty playlist URL or object is required');\n            }\n            this.logger_ = logger('PlaylistLoader');\n            const {\n                withCredentials = false\n            } = options;\n            this.src = src;\n            this.vhs_ = vhs;\n            this.withCredentials = withCredentials;\n            this.addDateRangesToTextTrack_ = options.addDateRangesToTextTrack;\n            const vhsOptions = vhs.options_;\n            this.customTagParsers = vhsOptions && vhsOptions.customTagParsers || [];\n            this.customTagMappers = vhsOptions && vhsOptions.customTagMappers || [];\n            this.llhls = vhsOptions && vhsOptions.llhls;\n            this.dateRangesStorage_ = new DateRangesStorage(); // initialize the loader state\n\n            this.state = 'HAVE_NOTHING'; // live playlist staleness timeout\n\n            this.handleMediaupdatetimeout_ = this.handleMediaupdatetimeout_.bind(this);\n            this.on('mediaupdatetimeout', this.handleMediaupdatetimeout_);\n            this.on('loadedplaylist', this.handleLoadedPlaylist_.bind(this));\n        }\n        handleLoadedPlaylist_() {\n            const mediaPlaylist = this.media();\n            if (!mediaPlaylist) {\n                return;\n            }\n            this.dateRangesStorage_.setOffset(mediaPlaylist.segments);\n            this.dateRangesStorage_.setPendingDateRanges(mediaPlaylist.dateRanges);\n            const availableDateRanges = this.dateRangesStorage_.getDateRangesToProcess();\n            if (!availableDateRanges.length || !this.addDateRangesToTextTrack_) {\n                return;\n            }\n            this.addDateRangesToTextTrack_(availableDateRanges);\n        }\n        handleMediaupdatetimeout_() {\n            if (this.state !== 'HAVE_METADATA') {\n                // only refresh the media playlist if no other activity is going on\n                return;\n            }\n            const media = this.media();\n            let uri = resolveUrl(this.main.uri, media.uri);\n            if (this.llhls) {\n                uri = addLLHLSQueryDirectives(uri, media);\n            }\n            this.state = 'HAVE_CURRENT_METADATA';\n            this.request = this.vhs_.xhr({\n                uri,\n                withCredentials: this.withCredentials\n            }, (error, req) => {\n                // disposed\n                if (!this.request) {\n                    return;\n                }\n                if (error) {\n                    return this.playlistRequestError(this.request, this.media(), 'HAVE_METADATA');\n                }\n                this.haveMetadata({\n                    playlistString: this.request.responseText,\n                    url: this.media().uri,\n                    id: this.media().id\n                });\n            });\n        }\n        playlistRequestError(xhr, playlist, startingState) {\n            const {\n                uri,\n                id\n            } = playlist; // any in-flight request is now finished\n\n            this.request = null;\n            if (startingState) {\n                this.state = startingState;\n            }\n            this.error = {\n                playlist: this.main.playlists[id],\n                status: xhr.status,\n                message: `HLS playlist request error at URL: ${uri}.`,\n                responseText: xhr.responseText,\n                code: xhr.status >= 500 ? 4 : 2\n            };\n            this.trigger('error');\n        }\n        parseManifest_({\n                           url,\n                           manifestString\n                       }) {\n            return parseManifest({\n                onwarn: ({\n                             message\n                         }) => this.logger_(`m3u8-parser warn for ${url}: ${message}`),\n                oninfo: ({\n                             message\n                         }) => this.logger_(`m3u8-parser info for ${url}: ${message}`),\n                manifestString,\n                customTagParsers: this.customTagParsers,\n                customTagMappers: this.customTagMappers,\n                llhls: this.llhls\n            });\n        }\n        /**\n         * Update the playlist loader's state in response to a new or updated playlist.\n         *\n         * @param {string} [playlistString]\n         *        Playlist string (if playlistObject is not provided)\n         * @param {Object} [playlistObject]\n         *        Playlist object (if playlistString is not provided)\n         * @param {string} url\n         *        URL of playlist\n         * @param {string} id\n         *        ID to use for playlist\n         */\n\n        haveMetadata({\n                         playlistString,\n                         playlistObject,\n                         url,\n                         id\n                     }) {\n            // any in-flight request is now finished\n            this.request = null;\n            this.state = 'HAVE_METADATA';\n            const playlist = playlistObject || this.parseManifest_({\n                url,\n                manifestString: playlistString\n            });\n            playlist.lastRequest = Date.now();\n            setupMediaPlaylist({\n                playlist,\n                uri: url,\n                id\n            }); // merge this playlist into the main manifest\n\n            const update = updateMain$1(this.main, playlist);\n            this.targetDuration = playlist.partTargetDuration || playlist.targetDuration;\n            this.pendingMedia_ = null;\n            if (update) {\n                this.main = update;\n                this.media_ = this.main.playlists[id];\n            } else {\n                this.trigger('playlistunchanged');\n            }\n            this.updateMediaUpdateTimeout_(refreshDelay(this.media(), !!update));\n            this.trigger('loadedplaylist');\n        }\n        /**\n         * Abort any outstanding work and clean up.\n         */\n\n        dispose() {\n            this.trigger('dispose');\n            this.stopRequest();\n            window.clearTimeout(this.mediaUpdateTimeout);\n            window.clearTimeout(this.finalRenditionTimeout);\n            this.dateRangesStorage_ = new DateRangesStorage();\n            this.off();\n        }\n        stopRequest() {\n            if (this.request) {\n                const oldRequest = this.request;\n                this.request = null;\n                oldRequest.onreadystatechange = null;\n                oldRequest.abort();\n            }\n        }\n        /**\n         * When called without any arguments, returns the currently\n         * active media playlist. When called with a single argument,\n         * triggers the playlist loader to asynchronously switch to the\n         * specified media playlist. Calling this method while the\n         * loader is in the HAVE_NOTHING causes an error to be emitted\n         * but otherwise has no effect.\n         *\n         * @param {Object=} playlist the parsed media playlist\n         * object to switch to\n         * @param {boolean=} shouldDelay whether we should delay the request by half target duration\n         *\n         * @return {Playlist} the current loaded media\n         */\n\n        media(playlist, shouldDelay) {\n            // getter\n            if (!playlist) {\n                return this.media_;\n            } // setter\n\n            if (this.state === 'HAVE_NOTHING') {\n                throw new Error('Cannot switch media playlist from ' + this.state);\n            } // find the playlist object if the target playlist has been\n            // specified by URI\n\n            if (typeof playlist === 'string') {\n                if (!this.main.playlists[playlist]) {\n                    throw new Error('Unknown playlist URI: ' + playlist);\n                }\n                playlist = this.main.playlists[playlist];\n            }\n            window.clearTimeout(this.finalRenditionTimeout);\n            if (shouldDelay) {\n                const delay = (playlist.partTargetDuration || playlist.targetDuration) / 2 * 1000 || 5 * 1000;\n                this.finalRenditionTimeout = window.setTimeout(this.media.bind(this, playlist, false), delay);\n                return;\n            }\n            const startingState = this.state;\n            const mediaChange = !this.media_ || playlist.id !== this.media_.id;\n            const mainPlaylistRef = this.main.playlists[playlist.id]; // switch to fully loaded playlists immediately\n\n            if (mainPlaylistRef && mainPlaylistRef.endList ||\n                // handle the case of a playlist object (e.g., if using vhs-json with a resolved\n                // media playlist or, for the case of demuxed audio, a resolved audio media group)\n                playlist.endList && playlist.segments.length) {\n                // abort outstanding playlist requests\n                if (this.request) {\n                    this.request.onreadystatechange = null;\n                    this.request.abort();\n                    this.request = null;\n                }\n                this.state = 'HAVE_METADATA';\n                this.media_ = playlist; // trigger media change if the active media has been updated\n\n                if (mediaChange) {\n                    this.trigger('mediachanging');\n                    if (startingState === 'HAVE_MAIN_MANIFEST') {\n                        // The initial playlist was a main manifest, and the first media selected was\n                        // also provided (in the form of a resolved playlist object) as part of the\n                        // source object (rather than just a URL). Therefore, since the media playlist\n                        // doesn't need to be requested, loadedmetadata won't trigger as part of the\n                        // normal flow, and needs an explicit trigger here.\n                        this.trigger('loadedmetadata');\n                    } else {\n                        this.trigger('mediachange');\n                    }\n                }\n                return;\n            } // We update/set the timeout here so that live playlists\n            // that are not a media change will \"start\" the loader as expected.\n            // We expect that this function will start the media update timeout\n            // cycle again. This also prevents a playlist switch failure from\n            // causing us to stall during live.\n\n            this.updateMediaUpdateTimeout_(refreshDelay(playlist, true)); // switching to the active playlist is a no-op\n\n            if (!mediaChange) {\n                return;\n            }\n            this.state = 'SWITCHING_MEDIA'; // there is already an outstanding playlist request\n\n            if (this.request) {\n                if (playlist.resolvedUri === this.request.url) {\n                    // requesting to switch to the same playlist multiple times\n                    // has no effect after the first\n                    return;\n                }\n                this.request.onreadystatechange = null;\n                this.request.abort();\n                this.request = null;\n            } // request the new playlist\n\n            if (this.media_) {\n                this.trigger('mediachanging');\n            }\n            this.pendingMedia_ = playlist;\n            this.request = this.vhs_.xhr({\n                uri: playlist.resolvedUri,\n                withCredentials: this.withCredentials\n            }, (error, req) => {\n                // disposed\n                if (!this.request) {\n                    return;\n                }\n                playlist.lastRequest = Date.now();\n                playlist.resolvedUri = resolveManifestRedirect(playlist.resolvedUri, req);\n                if (error) {\n                    return this.playlistRequestError(this.request, playlist, startingState);\n                }\n                this.haveMetadata({\n                    playlistString: req.responseText,\n                    url: playlist.uri,\n                    id: playlist.id\n                }); // fire loadedmetadata the first time a media playlist is loaded\n\n                if (startingState === 'HAVE_MAIN_MANIFEST') {\n                    this.trigger('loadedmetadata');\n                } else {\n                    this.trigger('mediachange');\n                }\n            });\n        }\n        /**\n         * pause loading of the playlist\n         */\n\n        pause() {\n            if (this.mediaUpdateTimeout) {\n                window.clearTimeout(this.mediaUpdateTimeout);\n                this.mediaUpdateTimeout = null;\n            }\n            this.stopRequest();\n            if (this.state === 'HAVE_NOTHING') {\n                // If we pause the loader before any data has been retrieved, its as if we never\n                // started, so reset to an unstarted state.\n                this.started = false;\n            } // Need to restore state now that no activity is happening\n\n            if (this.state === 'SWITCHING_MEDIA') {\n                // if the loader was in the process of switching media, it should either return to\n                // HAVE_MAIN_MANIFEST or HAVE_METADATA depending on if the loader has loaded a media\n                // playlist yet. This is determined by the existence of loader.media_\n                if (this.media_) {\n                    this.state = 'HAVE_METADATA';\n                } else {\n                    this.state = 'HAVE_MAIN_MANIFEST';\n                }\n            } else if (this.state === 'HAVE_CURRENT_METADATA') {\n                this.state = 'HAVE_METADATA';\n            }\n        }\n        /**\n         * start loading of the playlist\n         */\n\n        load(shouldDelay) {\n            if (this.mediaUpdateTimeout) {\n                window.clearTimeout(this.mediaUpdateTimeout);\n                this.mediaUpdateTimeout = null;\n            }\n            const media = this.media();\n            if (shouldDelay) {\n                const delay = media ? (media.partTargetDuration || media.targetDuration) / 2 * 1000 : 5 * 1000;\n                this.mediaUpdateTimeout = window.setTimeout(() => {\n                    this.mediaUpdateTimeout = null;\n                    this.load();\n                }, delay);\n                return;\n            }\n            if (!this.started) {\n                this.start();\n                return;\n            }\n            if (media && !media.endList) {\n                this.trigger('mediaupdatetimeout');\n            } else {\n                this.trigger('loadedplaylist');\n            }\n        }\n        updateMediaUpdateTimeout_(delay) {\n            if (this.mediaUpdateTimeout) {\n                window.clearTimeout(this.mediaUpdateTimeout);\n                this.mediaUpdateTimeout = null;\n            } // we only have use mediaupdatetimeout for live playlists.\n\n            if (!this.media() || this.media().endList) {\n                return;\n            }\n            this.mediaUpdateTimeout = window.setTimeout(() => {\n                this.mediaUpdateTimeout = null;\n                this.trigger('mediaupdatetimeout');\n                this.updateMediaUpdateTimeout_(delay);\n            }, delay);\n        }\n        /**\n         * start loading of the playlist\n         */\n\n        start() {\n            this.started = true;\n            if (typeof this.src === 'object') {\n                // in the case of an entirely constructed manifest object (meaning there's no actual\n                // manifest on a server), default the uri to the page's href\n                if (!this.src.uri) {\n                    this.src.uri = window.location.href;\n                } // resolvedUri is added on internally after the initial request. Since there's no\n                // request for pre-resolved manifests, add on resolvedUri here.\n\n                this.src.resolvedUri = this.src.uri; // Since a manifest object was passed in as the source (instead of a URL), the first\n                // request can be skipped (since the top level of the manifest, at a minimum, is\n                // already available as a parsed manifest object). However, if the manifest object\n                // represents a main playlist, some media playlists may need to be resolved before\n                // the starting segment list is available. Therefore, go directly to setup of the\n                // initial playlist, and let the normal flow continue from there.\n                //\n                // Note that the call to setup is asynchronous, as other sections of VHS may assume\n                // that the first request is asynchronous.\n\n                setTimeout(() => {\n                    this.setupInitialPlaylist(this.src);\n                }, 0);\n                return;\n            } // request the specified URL\n\n            this.request = this.vhs_.xhr({\n                uri: this.src,\n                withCredentials: this.withCredentials\n            }, (error, req) => {\n                // disposed\n                if (!this.request) {\n                    return;\n                } // clear the loader's request reference\n\n                this.request = null;\n                if (error) {\n                    this.error = {\n                        status: req.status,\n                        message: `HLS playlist request error at URL: ${this.src}.`,\n                        responseText: req.responseText,\n                        // MEDIA_ERR_NETWORK\n                        code: 2\n                    };\n                    if (this.state === 'HAVE_NOTHING') {\n                        this.started = false;\n                    }\n                    return this.trigger('error');\n                }\n                this.src = resolveManifestRedirect(this.src, req);\n                const manifest = this.parseManifest_({\n                    manifestString: req.responseText,\n                    url: this.src\n                });\n                this.setupInitialPlaylist(manifest);\n            });\n        }\n        srcUri() {\n            return typeof this.src === 'string' ? this.src : this.src.uri;\n        }\n        /**\n         * Given a manifest object that's either a main or media playlist, trigger the proper\n         * events and set the state of the playlist loader.\n         *\n         * If the manifest object represents a main playlist, `loadedplaylist` will be\n         * triggered to allow listeners to select a playlist. If none is selected, the loader\n         * will default to the first one in the playlists array.\n         *\n         * If the manifest object represents a media playlist, `loadedplaylist` will be\n         * triggered followed by `loadedmetadata`, as the only available playlist is loaded.\n         *\n         * In the case of a media playlist, a main playlist object wrapper with one playlist\n         * will be created so that all logic can handle playlists in the same fashion (as an\n         * assumed manifest object schema).\n         *\n         * @param {Object} manifest\n         *        The parsed manifest object\n         */\n\n        setupInitialPlaylist(manifest) {\n            this.state = 'HAVE_MAIN_MANIFEST';\n            if (manifest.playlists) {\n                this.main = manifest;\n                addPropertiesToMain(this.main, this.srcUri()); // If the initial main playlist has playlists wtih segments already resolved,\n                // then resolve URIs in advance, as they are usually done after a playlist request,\n                // which may not happen if the playlist is resolved.\n\n                manifest.playlists.forEach(playlist => {\n                    playlist.segments = getAllSegments(playlist);\n                    playlist.segments.forEach(segment => {\n                        resolveSegmentUris(segment, playlist.resolvedUri);\n                    });\n                });\n                this.trigger('loadedplaylist');\n                if (!this.request) {\n                    // no media playlist was specifically selected so start\n                    // from the first listed one\n                    this.media(this.main.playlists[0]);\n                }\n                return;\n            } // In order to support media playlists passed in as vhs-json, the case where the uri\n            // is not provided as part of the manifest should be considered, and an appropriate\n            // default used.\n\n            const uri = this.srcUri() || window.location.href;\n            this.main = mainForMedia(manifest, uri);\n            this.haveMetadata({\n                playlistObject: manifest,\n                url: uri,\n                id: this.main.playlists[0].id\n            });\n            this.trigger('loadedmetadata');\n        }\n        /**\n         * Updates or deletes a preexisting pathway clone.\n         * Ensures that all playlists related to the old pathway clone are\n         * either updated or deleted.\n         *\n         * @param {Object} clone On update, the pathway clone object for the newly updated pathway clone.\n         *        On delete, the old pathway clone object to be deleted.\n         * @param {boolean} isUpdate True if the pathway is to be updated,\n         *        false if it is meant to be deleted.\n         */\n\n        updateOrDeleteClone(clone, isUpdate) {\n            const main = this.main;\n            const pathway = clone.ID;\n            let i = main.playlists.length; // Iterate backwards through the playlist so we can remove playlists if necessary.\n\n            while (i--) {\n                const p = main.playlists[i];\n                if (p.attributes['PATHWAY-ID'] === pathway) {\n                    const oldPlaylistUri = p.resolvedUri;\n                    const oldPlaylistId = p.id; // update the indexed playlist and add new playlists by ID and URI\n\n                    if (isUpdate) {\n                        const newPlaylistUri = this.createCloneURI_(p.resolvedUri, clone);\n                        const newPlaylistId = createPlaylistID(pathway, newPlaylistUri);\n                        const attributes = this.createCloneAttributes_(pathway, p.attributes);\n                        const updatedPlaylist = this.createClonePlaylist_(p, newPlaylistId, clone, attributes);\n                        main.playlists[i] = updatedPlaylist;\n                        main.playlists[newPlaylistId] = updatedPlaylist;\n                        main.playlists[newPlaylistUri] = updatedPlaylist;\n                    } else {\n                        // Remove the indexed playlist.\n                        main.playlists.splice(i, 1);\n                    } // Remove playlists by the old ID and URI.\n\n                    delete main.playlists[oldPlaylistId];\n                    delete main.playlists[oldPlaylistUri];\n                }\n            }\n            this.updateOrDeleteCloneMedia(clone, isUpdate);\n        }\n        /**\n         * Updates or deletes media data based on the pathway clone object.\n         * Due to the complexity of the media groups and playlists, in all cases\n         * we remove all of the old media groups and playlists.\n         * On updates, we then create new media groups and playlists based on the\n         * new pathway clone object.\n         *\n         * @param {Object} clone The pathway clone object for the newly updated pathway clone.\n         * @param {boolean} isUpdate True if the pathway is to be updated,\n         *        false if it is meant to be deleted.\n         */\n\n        updateOrDeleteCloneMedia(clone, isUpdate) {\n            const main = this.main;\n            const id = clone.ID;\n            ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(mediaType => {\n                if (!main.mediaGroups[mediaType] || !main.mediaGroups[mediaType][id]) {\n                    return;\n                }\n                for (const groupKey in main.mediaGroups[mediaType]) {\n                    // Remove all media playlists for the media group for this pathway clone.\n                    if (groupKey === id) {\n                        for (const labelKey in main.mediaGroups[mediaType][groupKey]) {\n                            const oldMedia = main.mediaGroups[mediaType][groupKey][labelKey];\n                            oldMedia.playlists.forEach((p, i) => {\n                                const oldMediaPlaylist = main.playlists[p.id];\n                                const oldPlaylistId = oldMediaPlaylist.id;\n                                const oldPlaylistUri = oldMediaPlaylist.resolvedUri;\n                                delete main.playlists[oldPlaylistId];\n                                delete main.playlists[oldPlaylistUri];\n                            });\n                        } // Delete the old media group.\n\n                        delete main.mediaGroups[mediaType][groupKey];\n                    }\n                }\n            }); // Create the new media groups and playlists if there is an update.\n\n            if (isUpdate) {\n                this.createClonedMediaGroups_(clone);\n            }\n        }\n        /**\n         * Given a pathway clone object, clones all necessary playlists.\n         *\n         * @param {Object} clone The pathway clone object.\n         * @param {Object} basePlaylist The original playlist to clone from.\n         */\n\n        addClonePathway(clone, basePlaylist = {}) {\n            const main = this.main;\n            const index = main.playlists.length;\n            const uri = this.createCloneURI_(basePlaylist.resolvedUri, clone);\n            const playlistId = createPlaylistID(clone.ID, uri);\n            const attributes = this.createCloneAttributes_(clone.ID, basePlaylist.attributes);\n            const playlist = this.createClonePlaylist_(basePlaylist, playlistId, clone, attributes);\n            main.playlists[index] = playlist; // add playlist by ID and URI\n\n            main.playlists[playlistId] = playlist;\n            main.playlists[uri] = playlist;\n            this.createClonedMediaGroups_(clone);\n        }\n        /**\n         * Given a pathway clone object we create clones of all media.\n         * In this function, all necessary information and updated playlists\n         * are added to the `mediaGroup` object.\n         * Playlists are also added to the `playlists` array so the media groups\n         * will be properly linked.\n         *\n         * @param {Object} clone The pathway clone object.\n         */\n\n        createClonedMediaGroups_(clone) {\n            const id = clone.ID;\n            const baseID = clone['BASE-ID'];\n            const main = this.main;\n            ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(mediaType => {\n                // If the media type doesn't exist, or there is already a clone, skip\n                // to the next media type.\n                if (!main.mediaGroups[mediaType] || main.mediaGroups[mediaType][id]) {\n                    return;\n                }\n                for (const groupKey in main.mediaGroups[mediaType]) {\n                    if (groupKey === baseID) {\n                        // Create the group.\n                        main.mediaGroups[mediaType][id] = {};\n                    } else {\n                        // There is no need to iterate over label keys in this case.\n                        continue;\n                    }\n                    for (const labelKey in main.mediaGroups[mediaType][groupKey]) {\n                        const oldMedia = main.mediaGroups[mediaType][groupKey][labelKey];\n                        main.mediaGroups[mediaType][id][labelKey] = _extends$1({}, oldMedia);\n                        const newMedia = main.mediaGroups[mediaType][id][labelKey]; // update URIs on the media\n\n                        const newUri = this.createCloneURI_(oldMedia.resolvedUri, clone);\n                        newMedia.resolvedUri = newUri;\n                        newMedia.uri = newUri; // Reset playlists in the new media group.\n\n                        newMedia.playlists = []; // Create new playlists in the newly cloned media group.\n\n                        oldMedia.playlists.forEach((p, i) => {\n                            const oldMediaPlaylist = main.playlists[p.id];\n                            const group = groupID(mediaType, id, labelKey);\n                            const newPlaylistID = createPlaylistID(id, group); // Check to see if it already exists\n\n                            if (oldMediaPlaylist && !main.playlists[newPlaylistID]) {\n                                const newMediaPlaylist = this.createClonePlaylist_(oldMediaPlaylist, newPlaylistID, clone);\n                                const newPlaylistUri = newMediaPlaylist.resolvedUri;\n                                main.playlists[newPlaylistID] = newMediaPlaylist;\n                                main.playlists[newPlaylistUri] = newMediaPlaylist;\n                            }\n                            newMedia.playlists[i] = this.createClonePlaylist_(p, newPlaylistID, clone);\n                        });\n                    }\n                }\n            });\n        }\n        /**\n         * Using the original playlist to be cloned, and the pathway clone object\n         * information, we create a new playlist.\n         *\n         * @param {Object} basePlaylist  The original playlist to be cloned from.\n         * @param {string} id The desired id of the newly cloned playlist.\n         * @param {Object} clone The pathway clone object.\n         * @param {Object} attributes An optional object to populate the `attributes` property in the playlist.\n         *\n         * @return {Object} The combined cloned playlist.\n         */\n\n        createClonePlaylist_(basePlaylist, id, clone, attributes) {\n            const uri = this.createCloneURI_(basePlaylist.resolvedUri, clone);\n            const newProps = {\n                resolvedUri: uri,\n                uri,\n                id\n            }; // Remove all segments from previous playlist in the clone.\n\n            if (basePlaylist.segments) {\n                newProps.segments = [];\n            }\n            if (attributes) {\n                newProps.attributes = attributes;\n            }\n            return merge(basePlaylist, newProps);\n        }\n        /**\n         * Generates an updated URI for a cloned pathway based on the original\n         * pathway's URI and the paramaters from the pathway clone object in the\n         * content steering server response.\n         *\n         * @param {string} baseUri URI to be updated in the cloned pathway.\n         * @param {Object} clone The pathway clone object.\n         *\n         * @return {string} The updated URI for the cloned pathway.\n         */\n\n        createCloneURI_(baseURI, clone) {\n            const uri = new URL(baseURI);\n            uri.hostname = clone['URI-REPLACEMENT'].HOST;\n            const params = clone['URI-REPLACEMENT'].PARAMS; // Add params to the cloned URL.\n\n            for (const key of Object.keys(params)) {\n                uri.searchParams.set(key, params[key]);\n            }\n            return uri.href;\n        }\n        /**\n         * Helper function to create the attributes needed for the new clone.\n         * This mainly adds the necessary media attributes.\n         *\n         * @param {string} id The pathway clone object ID.\n         * @param {Object} oldAttributes The old attributes to compare to.\n         * @return {Object} The new attributes to add to the playlist.\n         */\n\n        createCloneAttributes_(id, oldAttributes) {\n            const attributes = {\n                ['PATHWAY-ID']: id\n            };\n            ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(mediaType => {\n                if (oldAttributes[mediaType]) {\n                    attributes[mediaType] = id;\n                }\n            });\n            return attributes;\n        }\n        /**\n         * Returns the key ID set from a playlist\n         *\n         * @param {playlist} playlist to fetch the key ID set from.\n         * @return a Set of 32 digit hex strings that represent the unique keyIds for that playlist.\n         */\n\n        getKeyIdSet(playlist) {\n            if (playlist.contentProtection) {\n                const keyIds = new Set();\n                for (const keysystem in playlist.contentProtection) {\n                    const keyId = playlist.contentProtection[keysystem].attributes.keyId;\n                    if (keyId) {\n                        keyIds.add(keyId.toLowerCase());\n                    }\n                }\n                return keyIds;\n            }\n        }\n    }\n\n    /**\n     * @file xhr.js\n     */\n    const {\n        xhr: videojsXHR\n    } = videojs;\n    const callbackWrapper = function (request, error, response, callback) {\n        const reqResponse = request.responseType === 'arraybuffer' ? request.response : request.responseText;\n        if (!error && reqResponse) {\n            request.responseTime = Date.now();\n            request.roundTripTime = request.responseTime - request.requestTime;\n            request.bytesReceived = reqResponse.byteLength || reqResponse.length;\n            if (!request.bandwidth) {\n                request.bandwidth = Math.floor(request.bytesReceived / request.roundTripTime * 8 * 1000);\n            }\n        }\n        if (response.headers) {\n            request.responseHeaders = response.headers;\n        } // videojs.xhr now uses a specific code on the error\n        // object to signal that a request has timed out instead\n        // of setting a boolean on the request object\n\n        if (error && error.code === 'ETIMEDOUT') {\n            request.timedout = true;\n        } // videojs.xhr no longer considers status codes outside of 200 and 0\n        // (for file uris) to be errors, but the old XHR did, so emulate that\n        // behavior. Status 206 may be used in response to byterange requests.\n\n        if (!error && !request.aborted && response.statusCode !== 200 && response.statusCode !== 206 && response.statusCode !== 0) {\n            error = new Error('XHR Failed with a response of: ' + (request && (reqResponse || request.responseText)));\n        }\n        callback(error, request);\n    };\n    /**\n     * Iterates over the request hooks Set and calls them in order\n     *\n     * @param {Set} hooks the hook Set to iterate over\n     * @param {Object} options the request options to pass to the xhr wrapper\n     * @return the callback hook function return value, the modified or new options Object.\n     */\n\n    const callAllRequestHooks = (requestSet, options) => {\n        if (!requestSet || !requestSet.size) {\n            return;\n        }\n        let newOptions = options;\n        requestSet.forEach(requestCallback => {\n            newOptions = requestCallback(newOptions);\n        });\n        return newOptions;\n    };\n    /**\n     * Iterates over the response hooks Set and calls them in order.\n     *\n     * @param {Set} hooks the hook Set to iterate over\n     * @param {Object} request the xhr request object\n     * @param {Object} error the xhr error object\n     * @param {Object} response the xhr response object\n     */\n\n    const callAllResponseHooks = (responseSet, request, error, response) => {\n        if (!responseSet || !responseSet.size) {\n            return;\n        }\n        responseSet.forEach(responseCallback => {\n            responseCallback(request, error, response);\n        });\n    };\n    const xhrFactory = function () {\n        const xhr = function XhrFunction(options, callback) {\n            // Add a default timeout\n            options = merge({\n                timeout: 45e3\n            }, options); // Allow an optional user-specified function to modify the option\n            // object before we construct the xhr request\n            // TODO: Remove beforeRequest in the next major release.\n\n            const beforeRequest = XhrFunction.beforeRequest || videojs.Vhs.xhr.beforeRequest; // onRequest and onResponse hooks as a Set, at either the player or global level.\n            // TODO: new Set added here for beforeRequest alias. Remove this when beforeRequest is removed.\n\n            const _requestCallbackSet = XhrFunction._requestCallbackSet || videojs.Vhs.xhr._requestCallbackSet || new Set();\n            const _responseCallbackSet = XhrFunction._responseCallbackSet || videojs.Vhs.xhr._responseCallbackSet;\n            if (beforeRequest && typeof beforeRequest === 'function') {\n                videojs.log.warn('beforeRequest is deprecated, use onRequest instead.');\n                _requestCallbackSet.add(beforeRequest);\n            } // Use the standard videojs.xhr() method unless `videojs.Vhs.xhr` has been overriden\n            // TODO: switch back to videojs.Vhs.xhr.name === 'XhrFunction' when we drop IE11\n\n            const xhrMethod = videojs.Vhs.xhr.original === true ? videojsXHR : videojs.Vhs.xhr; // call all registered onRequest hooks, assign new options.\n\n            const beforeRequestOptions = callAllRequestHooks(_requestCallbackSet, options); // Remove the beforeRequest function from the hooks set so stale beforeRequest functions are not called.\n\n            _requestCallbackSet.delete(beforeRequest); // xhrMethod will call XMLHttpRequest.open and XMLHttpRequest.send\n\n            const request = xhrMethod(beforeRequestOptions || options, function (error, response) {\n                // call all registered onResponse hooks\n                callAllResponseHooks(_responseCallbackSet, request, error, response);\n                return callbackWrapper(request, error, response, callback);\n            });\n            const originalAbort = request.abort;\n            request.abort = function () {\n                request.aborted = true;\n                return originalAbort.apply(request, arguments);\n            };\n            request.uri = options.uri;\n            request.requestTime = Date.now();\n            return request;\n        };\n        xhr.original = true;\n        return xhr;\n    };\n    /**\n     * Turns segment byterange into a string suitable for use in\n     * HTTP Range requests\n     *\n     * @param {Object} byterange - an object with two values defining the start and end\n     *                             of a byte-range\n     */\n\n    const byterangeStr = function (byterange) {\n        // `byterangeEnd` is one less than `offset + length` because the HTTP range\n        // header uses inclusive ranges\n        let byterangeEnd;\n        const byterangeStart = byterange.offset;\n        if (typeof byterange.offset === 'bigint' || typeof byterange.length === 'bigint') {\n            byterangeEnd = window.BigInt(byterange.offset) + window.BigInt(byterange.length) - window.BigInt(1);\n        } else {\n            byterangeEnd = byterange.offset + byterange.length - 1;\n        }\n        return 'bytes=' + byterangeStart + '-' + byterangeEnd;\n    };\n    /**\n     * Defines headers for use in the xhr request for a particular segment.\n     *\n     * @param {Object} segment - a simplified copy of the segmentInfo object\n     *                           from SegmentLoader\n     */\n\n    const segmentXhrHeaders = function (segment) {\n        const headers = {};\n        if (segment.byterange) {\n            headers.Range = byterangeStr(segment.byterange);\n        }\n        return headers;\n    };\n\n    /**\n     * @file bin-utils.js\n     */\n\n    /**\n     * convert a TimeRange to text\n     *\n     * @param {TimeRange} range the timerange to use for conversion\n     * @param {number} i the iterator on the range to convert\n     * @return {string} the range in string format\n     */\n\n    const textRange = function (range, i) {\n        return range.start(i) + '-' + range.end(i);\n    };\n    /**\n     * format a number as hex string\n     *\n     * @param {number} e The number\n     * @param {number} i the iterator\n     * @return {string} the hex formatted number as a string\n     */\n\n    const formatHexString = function (e, i) {\n        const value = e.toString(16);\n        return '00'.substring(0, 2 - value.length) + value + (i % 2 ? ' ' : '');\n    };\n    const formatAsciiString = function (e) {\n        if (e >= 0x20 && e < 0x7e) {\n            return String.fromCharCode(e);\n        }\n        return '.';\n    };\n    /**\n     * Creates an object for sending to a web worker modifying properties that are TypedArrays\n     * into a new object with seperated properties for the buffer, byteOffset, and byteLength.\n     *\n     * @param {Object} message\n     *        Object of properties and values to send to the web worker\n     * @return {Object}\n     *         Modified message with TypedArray values expanded\n     * @function createTransferableMessage\n     */\n\n    const createTransferableMessage = function (message) {\n        const transferable = {};\n        Object.keys(message).forEach(key => {\n            const value = message[key];\n            if (isArrayBufferView(value)) {\n                transferable[key] = {\n                    bytes: value.buffer,\n                    byteOffset: value.byteOffset,\n                    byteLength: value.byteLength\n                };\n            } else {\n                transferable[key] = value;\n            }\n        });\n        return transferable;\n    };\n    /**\n     * Returns a unique string identifier for a media initialization\n     * segment.\n     *\n     * @param {Object} initSegment\n     *        the init segment object.\n     *\n     * @return {string} the generated init segment id\n     */\n\n    const initSegmentId = function (initSegment) {\n        const byterange = initSegment.byterange || {\n            length: Infinity,\n            offset: 0\n        };\n        return [byterange.length, byterange.offset, initSegment.resolvedUri].join(',');\n    };\n    /**\n     * Returns a unique string identifier for a media segment key.\n     *\n     * @param {Object} key the encryption key\n     * @return {string} the unique id for the media segment key.\n     */\n\n    const segmentKeyId = function (key) {\n        return key.resolvedUri;\n    };\n    /**\n     * utils to help dump binary data to the console\n     *\n     * @param {Array|TypedArray} data\n     *        data to dump to a string\n     *\n     * @return {string} the data as a hex string.\n     */\n\n    const hexDump = data => {\n        const bytes = Array.prototype.slice.call(data);\n        const step = 16;\n        let result = '';\n        let hex;\n        let ascii;\n        for (let j = 0; j < bytes.length / step; j++) {\n            hex = bytes.slice(j * step, j * step + step).map(formatHexString).join('');\n            ascii = bytes.slice(j * step, j * step + step).map(formatAsciiString).join('');\n            result += hex + ' ' + ascii + '\\n';\n        }\n        return result;\n    };\n    const tagDump = ({\n                         bytes\n                     }) => hexDump(bytes);\n    const textRanges = ranges => {\n        let result = '';\n        let i;\n        for (i = 0; i < ranges.length; i++) {\n            result += textRange(ranges, i) + ' ';\n        }\n        return result;\n    };\n    var utils = /*#__PURE__*/Object.freeze({\n        __proto__: null,\n        createTransferableMessage: createTransferableMessage,\n        initSegmentId: initSegmentId,\n        segmentKeyId: segmentKeyId,\n        hexDump: hexDump,\n        tagDump: tagDump,\n        textRanges: textRanges\n    });\n\n    // TODO handle fmp4 case where the timing info is accurate and doesn't involve transmux\n    // 25% was arbitrarily chosen, and may need to be refined over time.\n\n    const SEGMENT_END_FUDGE_PERCENT = 0.25;\n    /**\n     * Converts a player time (any time that can be gotten/set from player.currentTime(),\n     * e.g., any time within player.seekable().start(0) to player.seekable().end(0)) to a\n     * program time (any time referencing the real world (e.g., EXT-X-PROGRAM-DATE-TIME)).\n     *\n     * The containing segment is required as the EXT-X-PROGRAM-DATE-TIME serves as an \"anchor\n     * point\" (a point where we have a mapping from program time to player time, with player\n     * time being the post transmux start of the segment).\n     *\n     * For more details, see [this doc](../../docs/program-time-from-player-time.md).\n     *\n     * @param {number} playerTime the player time\n     * @param {Object} segment the segment which contains the player time\n     * @return {Date} program time\n     */\n\n    const playerTimeToProgramTime = (playerTime, segment) => {\n        if (!segment.dateTimeObject) {\n            // Can't convert without an \"anchor point\" for the program time (i.e., a time that can\n            // be used to map the start of a segment with a real world time).\n            return null;\n        }\n        const transmuxerPrependedSeconds = segment.videoTimingInfo.transmuxerPrependedSeconds;\n        const transmuxedStart = segment.videoTimingInfo.transmuxedPresentationStart; // get the start of the content from before old content is prepended\n\n        const startOfSegment = transmuxedStart + transmuxerPrependedSeconds;\n        const offsetFromSegmentStart = playerTime - startOfSegment;\n        return new Date(segment.dateTimeObject.getTime() + offsetFromSegmentStart * 1000);\n    };\n    const originalSegmentVideoDuration = videoTimingInfo => {\n        return videoTimingInfo.transmuxedPresentationEnd - videoTimingInfo.transmuxedPresentationStart - videoTimingInfo.transmuxerPrependedSeconds;\n    };\n    /**\n     * Finds a segment that contains the time requested given as an ISO-8601 string. The\n     * returned segment might be an estimate or an accurate match.\n     *\n     * @param {string} programTime The ISO-8601 programTime to find a match for\n     * @param {Object} playlist A playlist object to search within\n     */\n\n    const findSegmentForProgramTime = (programTime, playlist) => {\n        // Assumptions:\n        //  - verifyProgramDateTimeTags has already been run\n        //  - live streams have been started\n        let dateTimeObject;\n        try {\n            dateTimeObject = new Date(programTime);\n        } catch (e) {\n            return null;\n        }\n        if (!playlist || !playlist.segments || playlist.segments.length === 0) {\n            return null;\n        }\n        let segment = playlist.segments[0];\n        if (dateTimeObject < new Date(segment.dateTimeObject)) {\n            // Requested time is before stream start.\n            return null;\n        }\n        for (let i = 0; i < playlist.segments.length - 1; i++) {\n            segment = playlist.segments[i];\n            const nextSegmentStart = new Date(playlist.segments[i + 1].dateTimeObject);\n            if (dateTimeObject < nextSegmentStart) {\n                break;\n            }\n        }\n        const lastSegment = playlist.segments[playlist.segments.length - 1];\n        const lastSegmentStart = lastSegment.dateTimeObject;\n        const lastSegmentDuration = lastSegment.videoTimingInfo ? originalSegmentVideoDuration(lastSegment.videoTimingInfo) : lastSegment.duration + lastSegment.duration * SEGMENT_END_FUDGE_PERCENT;\n        const lastSegmentEnd = new Date(lastSegmentStart.getTime() + lastSegmentDuration * 1000);\n        if (dateTimeObject > lastSegmentEnd) {\n            // Beyond the end of the stream, or our best guess of the end of the stream.\n            return null;\n        }\n        if (dateTimeObject > new Date(lastSegmentStart)) {\n            segment = lastSegment;\n        }\n        return {\n            segment,\n            estimatedStart: segment.videoTimingInfo ? segment.videoTimingInfo.transmuxedPresentationStart : Playlist.duration(playlist, playlist.mediaSequence + playlist.segments.indexOf(segment)),\n            // Although, given that all segments have accurate date time objects, the segment\n            // selected should be accurate, unless the video has been transmuxed at some point\n            // (determined by the presence of the videoTimingInfo object), the segment's \"player\n            // time\" (the start time in the player) can't be considered accurate.\n            type: segment.videoTimingInfo ? 'accurate' : 'estimate'\n        };\n    };\n    /**\n     * Finds a segment that contains the given player time(in seconds).\n     *\n     * @param {number} time The player time to find a match for\n     * @param {Object} playlist A playlist object to search within\n     */\n\n    const findSegmentForPlayerTime = (time, playlist) => {\n        // Assumptions:\n        // - there will always be a segment.duration\n        // - we can start from zero\n        // - segments are in time order\n        if (!playlist || !playlist.segments || playlist.segments.length === 0) {\n            return null;\n        }\n        let segmentEnd = 0;\n        let segment;\n        for (let i = 0; i < playlist.segments.length; i++) {\n            segment = playlist.segments[i]; // videoTimingInfo is set after the segment is downloaded and transmuxed, and\n            // should contain the most accurate values we have for the segment's player times.\n            //\n            // Use the accurate transmuxedPresentationEnd value if it is available, otherwise fall\n            // back to an estimate based on the manifest derived (inaccurate) segment.duration, to\n            // calculate an end value.\n\n            segmentEnd = segment.videoTimingInfo ? segment.videoTimingInfo.transmuxedPresentationEnd : segmentEnd + segment.duration;\n            if (time <= segmentEnd) {\n                break;\n            }\n        }\n        const lastSegment = playlist.segments[playlist.segments.length - 1];\n        if (lastSegment.videoTimingInfo && lastSegment.videoTimingInfo.transmuxedPresentationEnd < time) {\n            // The time requested is beyond the stream end.\n            return null;\n        }\n        if (time > segmentEnd) {\n            // The time is within or beyond the last segment.\n            //\n            // Check to see if the time is beyond a reasonable guess of the end of the stream.\n            if (time > segmentEnd + lastSegment.duration * SEGMENT_END_FUDGE_PERCENT) {\n                // Technically, because the duration value is only an estimate, the time may still\n                // exist in the last segment, however, there isn't enough information to make even\n                // a reasonable estimate.\n                return null;\n            }\n            segment = lastSegment;\n        }\n        return {\n            segment,\n            estimatedStart: segment.videoTimingInfo ? segment.videoTimingInfo.transmuxedPresentationStart : segmentEnd - segment.duration,\n            // Because videoTimingInfo is only set after transmux, it is the only way to get\n            // accurate timing values.\n            type: segment.videoTimingInfo ? 'accurate' : 'estimate'\n        };\n    };\n    /**\n     * Gives the offset of the comparisonTimestamp from the programTime timestamp in seconds.\n     * If the offset returned is positive, the programTime occurs after the\n     * comparisonTimestamp.\n     * If the offset is negative, the programTime occurs before the comparisonTimestamp.\n     *\n     * @param {string} comparisonTimeStamp An ISO-8601 timestamp to compare against\n     * @param {string} programTime The programTime as an ISO-8601 string\n     * @return {number} offset\n     */\n\n    const getOffsetFromTimestamp = (comparisonTimeStamp, programTime) => {\n        let segmentDateTime;\n        let programDateTime;\n        try {\n            segmentDateTime = new Date(comparisonTimeStamp);\n            programDateTime = new Date(programTime);\n        } catch (e) {// TODO handle error\n        }\n        const segmentTimeEpoch = segmentDateTime.getTime();\n        const programTimeEpoch = programDateTime.getTime();\n        return (programTimeEpoch - segmentTimeEpoch) / 1000;\n    };\n    /**\n     * Checks that all segments in this playlist have programDateTime tags.\n     *\n     * @param {Object} playlist A playlist object\n     */\n\n    const verifyProgramDateTimeTags = playlist => {\n        if (!playlist.segments || playlist.segments.length === 0) {\n            return false;\n        }\n        for (let i = 0; i < playlist.segments.length; i++) {\n            const segment = playlist.segments[i];\n            if (!segment.dateTimeObject) {\n                return false;\n            }\n        }\n        return true;\n    };\n    /**\n     * Returns the programTime of the media given a playlist and a playerTime.\n     * The playlist must have programDateTime tags for a programDateTime tag to be returned.\n     * If the segments containing the time requested have not been buffered yet, an estimate\n     * may be returned to the callback.\n     *\n     * @param {Object} args\n     * @param {Object} args.playlist A playlist object to search within\n     * @param {number} time A playerTime in seconds\n     * @param {Function} callback(err, programTime)\n     * @return {string} err.message A detailed error message\n     * @return {Object} programTime\n     * @return {number} programTime.mediaSeconds The streamTime in seconds\n     * @return {string} programTime.programDateTime The programTime as an ISO-8601 String\n     */\n\n    const getProgramTime = ({\n                                playlist,\n                                time = undefined,\n                                callback\n                            }) => {\n        if (!callback) {\n            throw new Error('getProgramTime: callback must be provided');\n        }\n        if (!playlist || time === undefined) {\n            return callback({\n                message: 'getProgramTime: playlist and time must be provided'\n            });\n        }\n        const matchedSegment = findSegmentForPlayerTime(time, playlist);\n        if (!matchedSegment) {\n            return callback({\n                message: 'valid programTime was not found'\n            });\n        }\n        if (matchedSegment.type === 'estimate') {\n            return callback({\n                message: 'Accurate programTime could not be determined.' + ' Please seek to e.seekTime and try again',\n                seekTime: matchedSegment.estimatedStart\n            });\n        }\n        const programTimeObject = {\n            mediaSeconds: time\n        };\n        const programTime = playerTimeToProgramTime(time, matchedSegment.segment);\n        if (programTime) {\n            programTimeObject.programDateTime = programTime.toISOString();\n        }\n        return callback(null, programTimeObject);\n    };\n    /**\n     * Seeks in the player to a time that matches the given programTime ISO-8601 string.\n     *\n     * @param {Object} args\n     * @param {string} args.programTime A programTime to seek to as an ISO-8601 String\n     * @param {Object} args.playlist A playlist to look within\n     * @param {number} args.retryCount The number of times to try for an accurate seek. Default is 2.\n     * @param {Function} args.seekTo A method to perform a seek\n     * @param {boolean} args.pauseAfterSeek Whether to end in a paused state after seeking. Default is true.\n     * @param {Object} args.tech The tech to seek on\n     * @param {Function} args.callback(err, newTime) A callback to return the new time to\n     * @return {string} err.message A detailed error message\n     * @return {number} newTime The exact time that was seeked to in seconds\n     */\n\n    const seekToProgramTime = ({\n                                   programTime,\n                                   playlist,\n                                   retryCount = 2,\n                                   seekTo,\n                                   pauseAfterSeek = true,\n                                   tech,\n                                   callback\n                               }) => {\n        if (!callback) {\n            throw new Error('seekToProgramTime: callback must be provided');\n        }\n        if (typeof programTime === 'undefined' || !playlist || !seekTo) {\n            return callback({\n                message: 'seekToProgramTime: programTime, seekTo and playlist must be provided'\n            });\n        }\n        if (!playlist.endList && !tech.hasStarted_) {\n            return callback({\n                message: 'player must be playing a live stream to start buffering'\n            });\n        }\n        if (!verifyProgramDateTimeTags(playlist)) {\n            return callback({\n                message: 'programDateTime tags must be provided in the manifest ' + playlist.resolvedUri\n            });\n        }\n        const matchedSegment = findSegmentForProgramTime(programTime, playlist); // no match\n\n        if (!matchedSegment) {\n            return callback({\n                message: `${programTime} was not found in the stream`\n            });\n        }\n        const segment = matchedSegment.segment;\n        const mediaOffset = getOffsetFromTimestamp(segment.dateTimeObject, programTime);\n        if (matchedSegment.type === 'estimate') {\n            // we've run out of retries\n            if (retryCount === 0) {\n                return callback({\n                    message: `${programTime} is not buffered yet. Try again`\n                });\n            }\n            seekTo(matchedSegment.estimatedStart + mediaOffset);\n            tech.one('seeked', () => {\n                seekToProgramTime({\n                    programTime,\n                    playlist,\n                    retryCount: retryCount - 1,\n                    seekTo,\n                    pauseAfterSeek,\n                    tech,\n                    callback\n                });\n            });\n            return;\n        } // Since the segment.start value is determined from the buffered end or ending time\n        // of the prior segment, the seekToTime doesn't need to account for any transmuxer\n        // modifications.\n\n        const seekToTime = segment.start + mediaOffset;\n        const seekedCallback = () => {\n            return callback(null, tech.currentTime());\n        }; // listen for seeked event\n\n        tech.one('seeked', seekedCallback); // pause before seeking as video.js will restore this state\n\n        if (pauseAfterSeek) {\n            tech.pause();\n        }\n        seekTo(seekToTime);\n    };\n\n    // which will only happen if the request is complete.\n\n    const callbackOnCompleted = (request, cb) => {\n        if (request.readyState === 4) {\n            return cb();\n        }\n        return;\n    };\n    const containerRequest = (uri, xhr, cb) => {\n        let bytes = [];\n        let id3Offset;\n        let finished = false;\n        const endRequestAndCallback = function (err, req, type, _bytes) {\n            req.abort();\n            finished = true;\n            return cb(err, req, type, _bytes);\n        };\n        const progressListener = function (error, request) {\n            if (finished) {\n                return;\n            }\n            if (error) {\n                return endRequestAndCallback(error, request, '', bytes);\n            } // grap the new part of content that was just downloaded\n\n            const newPart = request.responseText.substring(bytes && bytes.byteLength || 0, request.responseText.length); // add that onto bytes\n\n            bytes = concatTypedArrays(bytes, stringToBytes(newPart, true));\n            id3Offset = id3Offset || getId3Offset(bytes); // we need at least 10 bytes to determine a type\n            // or we need at least two bytes after an id3Offset\n\n            if (bytes.length < 10 || id3Offset && bytes.length < id3Offset + 2) {\n                return callbackOnCompleted(request, () => endRequestAndCallback(error, request, '', bytes));\n            }\n            const type = detectContainerForBytes(bytes); // if this looks like a ts segment but we don't have enough data\n            // to see the second sync byte, wait until we have enough data\n            // before declaring it ts\n\n            if (type === 'ts' && bytes.length < 188) {\n                return callbackOnCompleted(request, () => endRequestAndCallback(error, request, '', bytes));\n            } // this may be an unsynced ts segment\n            // wait for 376 bytes before detecting no container\n\n            if (!type && bytes.length < 376) {\n                return callbackOnCompleted(request, () => endRequestAndCallback(error, request, '', bytes));\n            }\n            return endRequestAndCallback(null, request, type, bytes);\n        };\n        const options = {\n            uri,\n            beforeSend(request) {\n                // this forces the browser to pass the bytes to us unprocessed\n                request.overrideMimeType('text/plain; charset=x-user-defined');\n                request.addEventListener('progress', function ({\n                                                                   total,\n                                                                   loaded\n                                                               }) {\n                    return callbackWrapper(request, null, {\n                        statusCode: request.status\n                    }, progressListener);\n                });\n            }\n        };\n        const request = xhr(options, function (error, response) {\n            return callbackWrapper(request, error, response, progressListener);\n        });\n        return request;\n    };\n    const {\n        EventTarget\n    } = videojs;\n    const dashPlaylistUnchanged = function (a, b) {\n        if (!isPlaylistUnchanged(a, b)) {\n            return false;\n        } // for dash the above check will often return true in scenarios where\n        // the playlist actually has changed because mediaSequence isn't a\n        // dash thing, and we often set it to 1. So if the playlists have the same amount\n        // of segments we return true.\n        // So for dash we need to make sure that the underlying segments are different.\n        // if sidx changed then the playlists are different.\n\n        if (a.sidx && b.sidx && (a.sidx.offset !== b.sidx.offset || a.sidx.length !== b.sidx.length)) {\n            return false;\n        } else if (!a.sidx && b.sidx || a.sidx && !b.sidx) {\n            return false;\n        } // one or the other does not have segments\n        // there was a change.\n\n        if (a.segments && !b.segments || !a.segments && b.segments) {\n            return false;\n        } // neither has segments nothing changed\n\n        if (!a.segments && !b.segments) {\n            return true;\n        } // check segments themselves\n\n        for (let i = 0; i < a.segments.length; i++) {\n            const aSegment = a.segments[i];\n            const bSegment = b.segments[i]; // if uris are different between segments there was a change\n\n            if (aSegment.uri !== bSegment.uri) {\n                return false;\n            } // neither segment has a byterange, there will be no byterange change.\n\n            if (!aSegment.byterange && !bSegment.byterange) {\n                continue;\n            }\n            const aByterange = aSegment.byterange;\n            const bByterange = bSegment.byterange; // if byterange only exists on one of the segments, there was a change.\n\n            if (aByterange && !bByterange || !aByterange && bByterange) {\n                return false;\n            } // if both segments have byterange with different offsets, there was a change.\n\n            if (aByterange.offset !== bByterange.offset || aByterange.length !== bByterange.length) {\n                return false;\n            }\n        } // if everything was the same with segments, this is the same playlist.\n\n        return true;\n    };\n    /**\n     * Use the representation IDs from the mpd object to create groupIDs, the NAME is set to mandatory representation\n     * ID in the parser. This allows for continuous playout across periods with the same representation IDs\n     * (continuous periods as defined in DASH-IF 3.2.12). This is assumed in the mpd-parser as well. If we want to support\n     * periods without continuous playback this function may need modification as well as the parser.\n     */\n\n    const dashGroupId = (type, group, label, playlist) => {\n        // If the manifest somehow does not have an ID (non-dash compliant), use the label.\n        const playlistId = playlist.attributes.NAME || label;\n        return `placeholder-uri-${type}-${group}-${playlistId}`;\n    };\n    /**\n     * Parses the main XML string and updates playlist URI references.\n     *\n     * @param {Object} config\n     *        Object of arguments\n     * @param {string} config.mainXml\n     *        The mpd XML\n     * @param {string} config.srcUrl\n     *        The mpd URL\n     * @param {Date} config.clientOffset\n     *         A time difference between server and client\n     * @param {Object} config.sidxMapping\n     *        SIDX mappings for moof/mdat URIs and byte ranges\n     * @return {Object}\n     *         The parsed mpd manifest object\n     */\n\n    const parseMainXml = ({\n                              mainXml,\n                              srcUrl,\n                              clientOffset,\n                              sidxMapping,\n                              previousManifest\n                          }) => {\n        const manifest = parse(mainXml, {\n            manifestUri: srcUrl,\n            clientOffset,\n            sidxMapping,\n            previousManifest\n        });\n        addPropertiesToMain(manifest, srcUrl, dashGroupId);\n        return manifest;\n    };\n    /**\n     * Removes any mediaGroup labels that no longer exist in the newMain\n     *\n     * @param {Object} update\n     *         The previous mpd object being updated\n     * @param {Object} newMain\n     *         The new mpd object\n     */\n\n    const removeOldMediaGroupLabels = (update, newMain) => {\n        forEachMediaGroup(update, (properties, type, group, label) => {\n            if (!(label in newMain.mediaGroups[type][group])) {\n                delete update.mediaGroups[type][group][label];\n            }\n        });\n    };\n    /**\n     * Returns a new main manifest that is the result of merging an updated main manifest\n     * into the original version.\n     *\n     * @param {Object} oldMain\n     *        The old parsed mpd object\n     * @param {Object} newMain\n     *        The updated parsed mpd object\n     * @return {Object}\n     *         A new object representing the original main manifest with the updated media\n     *         playlists merged in\n     */\n\n    const updateMain = (oldMain, newMain, sidxMapping) => {\n        let noChanges = true;\n        let update = merge(oldMain, {\n            // These are top level properties that can be updated\n            duration: newMain.duration,\n            minimumUpdatePeriod: newMain.minimumUpdatePeriod,\n            timelineStarts: newMain.timelineStarts\n        }); // First update the playlists in playlist list\n\n        for (let i = 0; i < newMain.playlists.length; i++) {\n            const playlist = newMain.playlists[i];\n            if (playlist.sidx) {\n                const sidxKey = generateSidxKey(playlist.sidx); // add sidx segments to the playlist if we have all the sidx info already\n\n                if (sidxMapping && sidxMapping[sidxKey] && sidxMapping[sidxKey].sidx) {\n                    addSidxSegmentsToPlaylist$1(playlist, sidxMapping[sidxKey].sidx, playlist.sidx.resolvedUri);\n                }\n            }\n            const playlistUpdate = updateMain$1(update, playlist, dashPlaylistUnchanged);\n            if (playlistUpdate) {\n                update = playlistUpdate;\n                noChanges = false;\n            }\n        } // Then update media group playlists\n\n        forEachMediaGroup(newMain, (properties, type, group, label) => {\n            if (properties.playlists && properties.playlists.length) {\n                const id = properties.playlists[0].id;\n                const playlistUpdate = updateMain$1(update, properties.playlists[0], dashPlaylistUnchanged);\n                if (playlistUpdate) {\n                    update = playlistUpdate; // add new mediaGroup label if it doesn't exist and assign the new mediaGroup.\n\n                    if (!(label in update.mediaGroups[type][group])) {\n                        update.mediaGroups[type][group][label] = properties;\n                    } // update the playlist reference within media groups\n\n                    update.mediaGroups[type][group][label].playlists[0] = update.playlists[id];\n                    noChanges = false;\n                }\n            }\n        }); // remove mediaGroup labels and references that no longer exist in the newMain\n\n        removeOldMediaGroupLabels(update, newMain);\n        if (newMain.minimumUpdatePeriod !== oldMain.minimumUpdatePeriod) {\n            noChanges = false;\n        }\n        if (noChanges) {\n            return null;\n        }\n        return update;\n    }; // SIDX should be equivalent if the URI and byteranges of the SIDX match.\n    // If the SIDXs have maps, the two maps should match,\n    // both `a` and `b` missing SIDXs is considered matching.\n    // If `a` or `b` but not both have a map, they aren't matching.\n\n    const equivalentSidx = (a, b) => {\n        const neitherMap = Boolean(!a.map && !b.map);\n        const equivalentMap = neitherMap || Boolean(a.map && b.map && a.map.byterange.offset === b.map.byterange.offset && a.map.byterange.length === b.map.byterange.length);\n        return equivalentMap && a.uri === b.uri && a.byterange.offset === b.byterange.offset && a.byterange.length === b.byterange.length;\n    }; // exported for testing\n\n    const compareSidxEntry = (playlists, oldSidxMapping) => {\n        const newSidxMapping = {};\n        for (const id in playlists) {\n            const playlist = playlists[id];\n            const currentSidxInfo = playlist.sidx;\n            if (currentSidxInfo) {\n                const key = generateSidxKey(currentSidxInfo);\n                if (!oldSidxMapping[key]) {\n                    break;\n                }\n                const savedSidxInfo = oldSidxMapping[key].sidxInfo;\n                if (equivalentSidx(savedSidxInfo, currentSidxInfo)) {\n                    newSidxMapping[key] = oldSidxMapping[key];\n                }\n            }\n        }\n        return newSidxMapping;\n    };\n    /**\n     *  A function that filters out changed items as they need to be requested separately.\n     *\n     *  The method is exported for testing\n     *\n     *  @param {Object} main the parsed mpd XML returned via mpd-parser\n     *  @param {Object} oldSidxMapping the SIDX to compare against\n     */\n\n    const filterChangedSidxMappings = (main, oldSidxMapping) => {\n        const videoSidx = compareSidxEntry(main.playlists, oldSidxMapping);\n        let mediaGroupSidx = videoSidx;\n        forEachMediaGroup(main, (properties, mediaType, groupKey, labelKey) => {\n            if (properties.playlists && properties.playlists.length) {\n                const playlists = properties.playlists;\n                mediaGroupSidx = merge(mediaGroupSidx, compareSidxEntry(playlists, oldSidxMapping));\n            }\n        });\n        return mediaGroupSidx;\n    };\n    class DashPlaylistLoader extends EventTarget {\n        // DashPlaylistLoader must accept either a src url or a playlist because subsequent\n        // playlist loader setups from media groups will expect to be able to pass a playlist\n        // (since there aren't external URLs to media playlists with DASH)\n        constructor(srcUrlOrPlaylist, vhs, options = {}, mainPlaylistLoader) {\n            super();\n            this.mainPlaylistLoader_ = mainPlaylistLoader || this;\n            if (!mainPlaylistLoader) {\n                this.isMain_ = true;\n            }\n            const {\n                withCredentials = false\n            } = options;\n            this.vhs_ = vhs;\n            this.withCredentials = withCredentials;\n            this.addMetadataToTextTrack = options.addMetadataToTextTrack;\n            if (!srcUrlOrPlaylist) {\n                throw new Error('A non-empty playlist URL or object is required');\n            } // event naming?\n\n            this.on('minimumUpdatePeriod', () => {\n                this.refreshXml_();\n            }); // live playlist staleness timeout\n\n            this.on('mediaupdatetimeout', () => {\n                this.refreshMedia_(this.media().id);\n            });\n            this.state = 'HAVE_NOTHING';\n            this.loadedPlaylists_ = {};\n            this.logger_ = logger('DashPlaylistLoader'); // initialize the loader state\n            // The mainPlaylistLoader will be created with a string\n\n            if (this.isMain_) {\n                this.mainPlaylistLoader_.srcUrl = srcUrlOrPlaylist; // TODO: reset sidxMapping between period changes\n                // once multi-period is refactored\n\n                this.mainPlaylistLoader_.sidxMapping_ = {};\n            } else {\n                this.childPlaylist_ = srcUrlOrPlaylist;\n            }\n        }\n        requestErrored_(err, request, startingState) {\n            // disposed\n            if (!this.request) {\n                return true;\n            } // pending request is cleared\n\n            this.request = null;\n            if (err) {\n                // use the provided error object or create one\n                // based on the request/response\n                this.error = typeof err === 'object' && !(err instanceof Error) ? err : {\n                    status: request.status,\n                    message: 'DASH request error at URL: ' + request.uri,\n                    response: request.response,\n                    // MEDIA_ERR_NETWORK\n                    code: 2\n                };\n                if (startingState) {\n                    this.state = startingState;\n                }\n                this.trigger('error');\n                return true;\n            }\n        }\n        /**\n         * Verify that the container of the sidx segment can be parsed\n         * and if it can, get and parse that segment.\n         */\n\n        addSidxSegments_(playlist, startingState, cb) {\n            const sidxKey = playlist.sidx && generateSidxKey(playlist.sidx); // playlist lacks sidx or sidx segments were added to this playlist already.\n\n            if (!playlist.sidx || !sidxKey || this.mainPlaylistLoader_.sidxMapping_[sidxKey]) {\n                // keep this function async\n                this.mediaRequest_ = window.setTimeout(() => cb(false), 0);\n                return;\n            } // resolve the segment URL relative to the playlist\n\n            const uri = resolveManifestRedirect(playlist.sidx.resolvedUri);\n            const fin = (err, request) => {\n                if (this.requestErrored_(err, request, startingState)) {\n                    return;\n                }\n                const sidxMapping = this.mainPlaylistLoader_.sidxMapping_;\n                let sidx;\n                try {\n                    sidx = parseSidx_1(toUint8(request.response).subarray(8));\n                } catch (e) {\n                    // sidx parsing failed.\n                    this.requestErrored_(e, request, startingState);\n                    return;\n                }\n                sidxMapping[sidxKey] = {\n                    sidxInfo: playlist.sidx,\n                    sidx\n                };\n                addSidxSegmentsToPlaylist$1(playlist, sidx, playlist.sidx.resolvedUri);\n                return cb(true);\n            };\n            this.request = containerRequest(uri, this.vhs_.xhr, (err, request, container, bytes) => {\n                if (err) {\n                    return fin(err, request);\n                }\n                if (!container || container !== 'mp4') {\n                    return fin({\n                        status: request.status,\n                        message: `Unsupported ${container || 'unknown'} container type for sidx segment at URL: ${uri}`,\n                        // response is just bytes in this case\n                        // but we really don't want to return that.\n                        response: '',\n                        playlist,\n                        internal: true,\n                        playlistExclusionDuration: Infinity,\n                        // MEDIA_ERR_NETWORK\n                        code: 2\n                    }, request);\n                } // if we already downloaded the sidx bytes in the container request, use them\n\n                const {\n                    offset,\n                    length\n                } = playlist.sidx.byterange;\n                if (bytes.length >= length + offset) {\n                    return fin(err, {\n                        response: bytes.subarray(offset, offset + length),\n                        status: request.status,\n                        uri: request.uri\n                    });\n                } // otherwise request sidx bytes\n\n                this.request = this.vhs_.xhr({\n                    uri,\n                    responseType: 'arraybuffer',\n                    headers: segmentXhrHeaders({\n                        byterange: playlist.sidx.byterange\n                    })\n                }, fin);\n            });\n        }\n        dispose() {\n            this.trigger('dispose');\n            this.stopRequest();\n            this.loadedPlaylists_ = {};\n            window.clearTimeout(this.minimumUpdatePeriodTimeout_);\n            window.clearTimeout(this.mediaRequest_);\n            window.clearTimeout(this.mediaUpdateTimeout);\n            this.mediaUpdateTimeout = null;\n            this.mediaRequest_ = null;\n            this.minimumUpdatePeriodTimeout_ = null;\n            if (this.mainPlaylistLoader_.createMupOnMedia_) {\n                this.off('loadedmetadata', this.mainPlaylistLoader_.createMupOnMedia_);\n                this.mainPlaylistLoader_.createMupOnMedia_ = null;\n            }\n            this.off();\n        }\n        hasPendingRequest() {\n            return this.request || this.mediaRequest_;\n        }\n        stopRequest() {\n            if (this.request) {\n                const oldRequest = this.request;\n                this.request = null;\n                oldRequest.onreadystatechange = null;\n                oldRequest.abort();\n            }\n        }\n        media(playlist) {\n            // getter\n            if (!playlist) {\n                return this.media_;\n            } // setter\n\n            if (this.state === 'HAVE_NOTHING') {\n                throw new Error('Cannot switch media playlist from ' + this.state);\n            }\n            const startingState = this.state; // find the playlist object if the target playlist has been specified by URI\n\n            if (typeof playlist === 'string') {\n                if (!this.mainPlaylistLoader_.main.playlists[playlist]) {\n                    throw new Error('Unknown playlist URI: ' + playlist);\n                }\n                playlist = this.mainPlaylistLoader_.main.playlists[playlist];\n            }\n            const mediaChange = !this.media_ || playlist.id !== this.media_.id; // switch to previously loaded playlists immediately\n\n            if (mediaChange && this.loadedPlaylists_[playlist.id] && this.loadedPlaylists_[playlist.id].endList) {\n                this.state = 'HAVE_METADATA';\n                this.media_ = playlist; // trigger media change if the active media has been updated\n\n                if (mediaChange) {\n                    this.trigger('mediachanging');\n                    this.trigger('mediachange');\n                }\n                return;\n            } // switching to the active playlist is a no-op\n\n            if (!mediaChange) {\n                return;\n            } // switching from an already loaded playlist\n\n            if (this.media_) {\n                this.trigger('mediachanging');\n            }\n            this.addSidxSegments_(playlist, startingState, sidxChanged => {\n                // everything is ready just continue to haveMetadata\n                this.haveMetadata({\n                    startingState,\n                    playlist\n                });\n            });\n        }\n        haveMetadata({\n                         startingState,\n                         playlist\n                     }) {\n            this.state = 'HAVE_METADATA';\n            this.loadedPlaylists_[playlist.id] = playlist;\n            this.mediaRequest_ = null; // This will trigger loadedplaylist\n\n            this.refreshMedia_(playlist.id); // fire loadedmetadata the first time a media playlist is loaded\n            // to resolve setup of media groups\n\n            if (startingState === 'HAVE_MAIN_MANIFEST') {\n                this.trigger('loadedmetadata');\n            } else {\n                // trigger media change if the active media has been updated\n                this.trigger('mediachange');\n            }\n        }\n        pause() {\n            if (this.mainPlaylistLoader_.createMupOnMedia_) {\n                this.off('loadedmetadata', this.mainPlaylistLoader_.createMupOnMedia_);\n                this.mainPlaylistLoader_.createMupOnMedia_ = null;\n            }\n            this.stopRequest();\n            window.clearTimeout(this.mediaUpdateTimeout);\n            this.mediaUpdateTimeout = null;\n            if (this.isMain_) {\n                window.clearTimeout(this.mainPlaylistLoader_.minimumUpdatePeriodTimeout_);\n                this.mainPlaylistLoader_.minimumUpdatePeriodTimeout_ = null;\n            }\n            if (this.state === 'HAVE_NOTHING') {\n                // If we pause the loader before any data has been retrieved, its as if we never\n                // started, so reset to an unstarted state.\n                this.started = false;\n            }\n        }\n        load(isFinalRendition) {\n            window.clearTimeout(this.mediaUpdateTimeout);\n            this.mediaUpdateTimeout = null;\n            const media = this.media();\n            if (isFinalRendition) {\n                const delay = media ? media.targetDuration / 2 * 1000 : 5 * 1000;\n                this.mediaUpdateTimeout = window.setTimeout(() => this.load(), delay);\n                return;\n            } // because the playlists are internal to the manifest, load should either load the\n            // main manifest, or do nothing but trigger an event\n\n            if (!this.started) {\n                this.start();\n                return;\n            }\n            if (media && !media.endList) {\n                // Check to see if this is the main loader and the MUP was cleared (this happens\n                // when the loader was paused). `media` should be set at this point since one is always\n                // set during `start()`.\n                if (this.isMain_ && !this.minimumUpdatePeriodTimeout_) {\n                    // Trigger minimumUpdatePeriod to refresh the main manifest\n                    this.trigger('minimumUpdatePeriod'); // Since there was no prior minimumUpdatePeriodTimeout it should be recreated\n\n                    this.updateMinimumUpdatePeriodTimeout_();\n                }\n                this.trigger('mediaupdatetimeout');\n            } else {\n                this.trigger('loadedplaylist');\n            }\n        }\n        start() {\n            this.started = true; // We don't need to request the main manifest again\n            // Call this asynchronously to match the xhr request behavior below\n\n            if (!this.isMain_) {\n                this.mediaRequest_ = window.setTimeout(() => this.haveMain_(), 0);\n                return;\n            }\n            this.requestMain_((req, mainChanged) => {\n                this.haveMain_();\n                if (!this.hasPendingRequest() && !this.media_) {\n                    this.media(this.mainPlaylistLoader_.main.playlists[0]);\n                }\n            });\n        }\n        requestMain_(cb) {\n            this.request = this.vhs_.xhr({\n                uri: this.mainPlaylistLoader_.srcUrl,\n                withCredentials: this.withCredentials\n            }, (error, req) => {\n                if (this.requestErrored_(error, req)) {\n                    if (this.state === 'HAVE_NOTHING') {\n                        this.started = false;\n                    }\n                    return;\n                }\n                const mainChanged = req.responseText !== this.mainPlaylistLoader_.mainXml_;\n                this.mainPlaylistLoader_.mainXml_ = req.responseText;\n                if (req.responseHeaders && req.responseHeaders.date) {\n                    this.mainLoaded_ = Date.parse(req.responseHeaders.date);\n                } else {\n                    this.mainLoaded_ = Date.now();\n                }\n                this.mainPlaylistLoader_.srcUrl = resolveManifestRedirect(this.mainPlaylistLoader_.srcUrl, req);\n                if (mainChanged) {\n                    this.handleMain_();\n                    this.syncClientServerClock_(() => {\n                        return cb(req, mainChanged);\n                    });\n                    return;\n                }\n                return cb(req, mainChanged);\n            });\n        }\n        /**\n         * Parses the main xml for UTCTiming node to sync the client clock to the server\n         * clock. If the UTCTiming node requires a HEAD or GET request, that request is made.\n         *\n         * @param {Function} done\n         *        Function to call when clock sync has completed\n         */\n\n        syncClientServerClock_(done) {\n            const utcTiming = parseUTCTiming(this.mainPlaylistLoader_.mainXml_); // No UTCTiming element found in the mpd. Use Date header from mpd request as the\n            // server clock\n\n            if (utcTiming === null) {\n                this.mainPlaylistLoader_.clientOffset_ = this.mainLoaded_ - Date.now();\n                return done();\n            }\n            if (utcTiming.method === 'DIRECT') {\n                this.mainPlaylistLoader_.clientOffset_ = utcTiming.value - Date.now();\n                return done();\n            }\n            this.request = this.vhs_.xhr({\n                uri: resolveUrl(this.mainPlaylistLoader_.srcUrl, utcTiming.value),\n                method: utcTiming.method,\n                withCredentials: this.withCredentials\n            }, (error, req) => {\n                // disposed\n                if (!this.request) {\n                    return;\n                }\n                if (error) {\n                    // sync request failed, fall back to using date header from mpd\n                    // TODO: log warning\n                    this.mainPlaylistLoader_.clientOffset_ = this.mainLoaded_ - Date.now();\n                    return done();\n                }\n                let serverTime;\n                if (utcTiming.method === 'HEAD') {\n                    if (!req.responseHeaders || !req.responseHeaders.date) {\n                        // expected date header not preset, fall back to using date header from mpd\n                        // TODO: log warning\n                        serverTime = this.mainLoaded_;\n                    } else {\n                        serverTime = Date.parse(req.responseHeaders.date);\n                    }\n                } else {\n                    serverTime = Date.parse(req.responseText);\n                }\n                this.mainPlaylistLoader_.clientOffset_ = serverTime - Date.now();\n                done();\n            });\n        }\n        haveMain_() {\n            this.state = 'HAVE_MAIN_MANIFEST';\n            if (this.isMain_) {\n                // We have the main playlist at this point, so\n                // trigger this to allow PlaylistController\n                // to make an initial playlist selection\n                this.trigger('loadedplaylist');\n            } else if (!this.media_) {\n                // no media playlist was specifically selected so select\n                // the one the child playlist loader was created with\n                this.media(this.childPlaylist_);\n            }\n        }\n        handleMain_() {\n            // clear media request\n            this.mediaRequest_ = null;\n            const oldMain = this.mainPlaylistLoader_.main;\n            let newMain = parseMainXml({\n                mainXml: this.mainPlaylistLoader_.mainXml_,\n                srcUrl: this.mainPlaylistLoader_.srcUrl,\n                clientOffset: this.mainPlaylistLoader_.clientOffset_,\n                sidxMapping: this.mainPlaylistLoader_.sidxMapping_,\n                previousManifest: oldMain\n            }); // if we have an old main to compare the new main against\n\n            if (oldMain) {\n                newMain = updateMain(oldMain, newMain, this.mainPlaylistLoader_.sidxMapping_);\n            } // only update main if we have a new main\n\n            this.mainPlaylistLoader_.main = newMain ? newMain : oldMain;\n            const location = this.mainPlaylistLoader_.main.locations && this.mainPlaylistLoader_.main.locations[0];\n            if (location && location !== this.mainPlaylistLoader_.srcUrl) {\n                this.mainPlaylistLoader_.srcUrl = location;\n            }\n            if (!oldMain || newMain && newMain.minimumUpdatePeriod !== oldMain.minimumUpdatePeriod) {\n                this.updateMinimumUpdatePeriodTimeout_();\n            }\n            this.addEventStreamToMetadataTrack_(newMain);\n            return Boolean(newMain);\n        }\n        updateMinimumUpdatePeriodTimeout_() {\n            const mpl = this.mainPlaylistLoader_; // cancel any pending creation of mup on media\n            // a new one will be added if needed.\n\n            if (mpl.createMupOnMedia_) {\n                mpl.off('loadedmetadata', mpl.createMupOnMedia_);\n                mpl.createMupOnMedia_ = null;\n            } // clear any pending timeouts\n\n            if (mpl.minimumUpdatePeriodTimeout_) {\n                window.clearTimeout(mpl.minimumUpdatePeriodTimeout_);\n                mpl.minimumUpdatePeriodTimeout_ = null;\n            }\n            let mup = mpl.main && mpl.main.minimumUpdatePeriod; // If the minimumUpdatePeriod has a value of 0, that indicates that the current\n            // MPD has no future validity, so a new one will need to be acquired when new\n            // media segments are to be made available. Thus, we use the target duration\n            // in this case\n\n            if (mup === 0) {\n                if (mpl.media()) {\n                    mup = mpl.media().targetDuration * 1000;\n                } else {\n                    mpl.createMupOnMedia_ = mpl.updateMinimumUpdatePeriodTimeout_;\n                    mpl.one('loadedmetadata', mpl.createMupOnMedia_);\n                }\n            } // if minimumUpdatePeriod is invalid or <= zero, which\n            // can happen when a live video becomes VOD. skip timeout\n            // creation.\n\n            if (typeof mup !== 'number' || mup <= 0) {\n                if (mup < 0) {\n                    this.logger_(`found invalid minimumUpdatePeriod of ${mup}, not setting a timeout`);\n                }\n                return;\n            }\n            this.createMUPTimeout_(mup);\n        }\n        createMUPTimeout_(mup) {\n            const mpl = this.mainPlaylistLoader_;\n            mpl.minimumUpdatePeriodTimeout_ = window.setTimeout(() => {\n                mpl.minimumUpdatePeriodTimeout_ = null;\n                mpl.trigger('minimumUpdatePeriod');\n                mpl.createMUPTimeout_(mup);\n            }, mup);\n        }\n        /**\n         * Sends request to refresh the main xml and updates the parsed main manifest\n         */\n\n        refreshXml_() {\n            this.requestMain_((req, mainChanged) => {\n                if (!mainChanged) {\n                    return;\n                }\n                if (this.media_) {\n                    this.media_ = this.mainPlaylistLoader_.main.playlists[this.media_.id];\n                } // This will filter out updated sidx info from the mapping\n\n                this.mainPlaylistLoader_.sidxMapping_ = filterChangedSidxMappings(this.mainPlaylistLoader_.main, this.mainPlaylistLoader_.sidxMapping_);\n                this.addSidxSegments_(this.media(), this.state, sidxChanged => {\n                    // TODO: do we need to reload the current playlist?\n                    this.refreshMedia_(this.media().id);\n                });\n            });\n        }\n        /**\n         * Refreshes the media playlist by re-parsing the main xml and updating playlist\n         * references. If this is an alternate loader, the updated parsed manifest is retrieved\n         * from the main loader.\n         */\n\n        refreshMedia_(mediaID) {\n            if (!mediaID) {\n                throw new Error('refreshMedia_ must take a media id');\n            } // for main we have to reparse the main xml\n            // to re-create segments based on current timing values\n            // which may change media. We only skip updating the main manifest\n            // if this is the first time this.media_ is being set.\n            // as main was just parsed in that case.\n\n            if (this.media_ && this.isMain_) {\n                this.handleMain_();\n            }\n            const playlists = this.mainPlaylistLoader_.main.playlists;\n            const mediaChanged = !this.media_ || this.media_ !== playlists[mediaID];\n            if (mediaChanged) {\n                this.media_ = playlists[mediaID];\n            } else {\n                this.trigger('playlistunchanged');\n            }\n            if (!this.mediaUpdateTimeout) {\n                const createMediaUpdateTimeout = () => {\n                    if (this.media().endList) {\n                        return;\n                    }\n                    this.mediaUpdateTimeout = window.setTimeout(() => {\n                        this.trigger('mediaupdatetimeout');\n                        createMediaUpdateTimeout();\n                    }, refreshDelay(this.media(), Boolean(mediaChanged)));\n                };\n                createMediaUpdateTimeout();\n            }\n            this.trigger('loadedplaylist');\n        }\n        /**\n         * Takes eventstream data from a parsed DASH manifest and adds it to the metadata text track.\n         *\n         * @param {manifest} newMain the newly parsed manifest\n         */\n\n        addEventStreamToMetadataTrack_(newMain) {\n            // Only add new event stream metadata if we have a new manifest.\n            if (newMain && this.mainPlaylistLoader_.main.eventStream) {\n                // convert EventStream to ID3-like data.\n                const metadataArray = this.mainPlaylistLoader_.main.eventStream.map(eventStreamNode => {\n                    return {\n                        cueTime: eventStreamNode.start,\n                        frames: [{\n                            data: eventStreamNode.messageData\n                        }]\n                    };\n                });\n                this.addMetadataToTextTrack('EventStream', metadataArray, this.mainPlaylistLoader_.main.duration);\n            }\n        }\n        /**\n         * Returns the key ID set from a playlist\n         *\n         * @param {playlist} playlist to fetch the key ID set from.\n         * @return a Set of 32 digit hex strings that represent the unique keyIds for that playlist.\n         */\n\n        getKeyIdSet(playlist) {\n            if (playlist.contentProtection) {\n                const keyIds = new Set();\n                for (const keysystem in playlist.contentProtection) {\n                    const defaultKID = playlist.contentProtection[keysystem].attributes['cenc:default_KID'];\n                    if (defaultKID) {\n                        // DASH keyIds are separated by dashes.\n                        keyIds.add(defaultKID.replace(/-/g, '').toLowerCase());\n                    }\n                }\n                return keyIds;\n            }\n        }\n    }\n    var Config = {\n        GOAL_BUFFER_LENGTH: 30,\n        MAX_GOAL_BUFFER_LENGTH: 60,\n        BACK_BUFFER_LENGTH: 30,\n        GOAL_BUFFER_LENGTH_RATE: 1,\n        // 0.5 MB/s\n        INITIAL_BANDWIDTH: 4194304,\n        // A fudge factor to apply to advertised playlist bitrates to account for\n        // temporary flucations in client bandwidth\n        BANDWIDTH_VARIANCE: 1.2,\n        // How much of the buffer must be filled before we consider upswitching\n        BUFFER_LOW_WATER_LINE: 0,\n        MAX_BUFFER_LOW_WATER_LINE: 30,\n        // TODO: Remove this when experimentalBufferBasedABR is removed\n        EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE: 16,\n        BUFFER_LOW_WATER_LINE_RATE: 1,\n        // If the buffer is greater than the high water line, we won't switch down\n        BUFFER_HIGH_WATER_LINE: 30\n    };\n    const stringToArrayBuffer = string => {\n        const view = new Uint8Array(new ArrayBuffer(string.length));\n        for (let i = 0; i < string.length; i++) {\n            view[i] = string.charCodeAt(i);\n        }\n        return view.buffer;\n    };\n\n    /* global Blob, BlobBuilder, Worker */\n    // unify worker interface\n    const browserWorkerPolyFill = function (workerObj) {\n        // node only supports on/off\n        workerObj.on = workerObj.addEventListener;\n        workerObj.off = workerObj.removeEventListener;\n        return workerObj;\n    };\n    const createObjectURL = function (str) {\n        try {\n            return URL.createObjectURL(new Blob([str], {\n                type: 'application/javascript'\n            }));\n        } catch (e) {\n            const blob = new BlobBuilder();\n            blob.append(str);\n            return URL.createObjectURL(blob.getBlob());\n        }\n    };\n    const factory = function (code) {\n        return function () {\n            const objectUrl = createObjectURL(code);\n            const worker = browserWorkerPolyFill(new Worker(objectUrl));\n            worker.objURL = objectUrl;\n            const terminate = worker.terminate;\n            worker.on = worker.addEventListener;\n            worker.off = worker.removeEventListener;\n            worker.terminate = function () {\n                URL.revokeObjectURL(objectUrl);\n                return terminate.call(this);\n            };\n            return worker;\n        };\n    };\n    const transform = function (code) {\n        return `var browserWorkerPolyFill = ${browserWorkerPolyFill.toString()};\\n` + 'browserWorkerPolyFill(self);\\n' + code;\n    };\n    const getWorkerString = function (fn) {\n        return fn.toString().replace(/^function.+?{/, '').slice(0, -1);\n    };\n\n    /* rollup-plugin-worker-factory start for worker!/home/runner/work/http-streaming/http-streaming/src/transmuxer-worker.js */\n    const workerCode$1 = transform(getWorkerString(function () {\n        var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * A lightweight readable stream implemention that handles event dispatching.\n         * Objects that inherit from streams should call init in their constructors.\n         */\n\n        var Stream$8 = function () {\n            this.init = function () {\n                var listeners = {};\n                /**\n                 * Add a listener for a specified event type.\n                 * @param type {string} the event name\n                 * @param listener {function} the callback to be invoked when an event of\n                 * the specified type occurs\n                 */\n\n                this.on = function (type, listener) {\n                    if (!listeners[type]) {\n                        listeners[type] = [];\n                    }\n                    listeners[type] = listeners[type].concat(listener);\n                };\n                /**\n                 * Remove a listener for a specified event type.\n                 * @param type {string} the event name\n                 * @param listener {function} a function previously registered for this\n                 * type of event through `on`\n                 */\n\n                this.off = function (type, listener) {\n                    var index;\n                    if (!listeners[type]) {\n                        return false;\n                    }\n                    index = listeners[type].indexOf(listener);\n                    listeners[type] = listeners[type].slice();\n                    listeners[type].splice(index, 1);\n                    return index > -1;\n                };\n                /**\n                 * Trigger an event of the specified type on this stream. Any additional\n                 * arguments to this function are passed as parameters to event listeners.\n                 * @param type {string} the event name\n                 */\n\n                this.trigger = function (type) {\n                    var callbacks, i, length, args;\n                    callbacks = listeners[type];\n                    if (!callbacks) {\n                        return;\n                    } // Slicing the arguments on every invocation of this method\n                    // can add a significant amount of overhead. Avoid the\n                    // intermediate object creation for the common case of a\n                    // single callback argument\n\n                    if (arguments.length === 2) {\n                        length = callbacks.length;\n                        for (i = 0; i < length; ++i) {\n                            callbacks[i].call(this, arguments[1]);\n                        }\n                    } else {\n                        args = [];\n                        i = arguments.length;\n                        for (i = 1; i < arguments.length; ++i) {\n                            args.push(arguments[i]);\n                        }\n                        length = callbacks.length;\n                        for (i = 0; i < length; ++i) {\n                            callbacks[i].apply(this, args);\n                        }\n                    }\n                };\n                /**\n                 * Destroys the stream and cleans up.\n                 */\n\n                this.dispose = function () {\n                    listeners = {};\n                };\n            };\n        };\n        /**\n         * Forwards all `data` events on this stream to the destination stream. The\n         * destination stream should provide a method `push` to receive the data\n         * events as they arrive.\n         * @param destination {stream} the stream that will receive all `data` events\n         * @param autoFlush {boolean} if false, we will not call `flush` on the destination\n         *                            when the current stream emits a 'done' event\n         * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n         */\n\n        Stream$8.prototype.pipe = function (destination) {\n            this.on('data', function (data) {\n                destination.push(data);\n            });\n            this.on('done', function (flushSource) {\n                destination.flush(flushSource);\n            });\n            this.on('partialdone', function (flushSource) {\n                destination.partialFlush(flushSource);\n            });\n            this.on('endedtimeline', function (flushSource) {\n                destination.endTimeline(flushSource);\n            });\n            this.on('reset', function (flushSource) {\n                destination.reset(flushSource);\n            });\n            return destination;\n        }; // Default stream functions that are expected to be overridden to perform\n        // actual work. These are provided by the prototype as a sort of no-op\n        // implementation so that we don't have to check for their existence in the\n        // `pipe` function above.\n\n        Stream$8.prototype.push = function (data) {\n            this.trigger('data', data);\n        };\n        Stream$8.prototype.flush = function (flushSource) {\n            this.trigger('done', flushSource);\n        };\n        Stream$8.prototype.partialFlush = function (flushSource) {\n            this.trigger('partialdone', flushSource);\n        };\n        Stream$8.prototype.endTimeline = function (flushSource) {\n            this.trigger('endedtimeline', flushSource);\n        };\n        Stream$8.prototype.reset = function (flushSource) {\n            this.trigger('reset', flushSource);\n        };\n        var stream = Stream$8;\n        var MAX_UINT32$1 = Math.pow(2, 32);\n        var getUint64$3 = function (uint8) {\n            var dv = new DataView(uint8.buffer, uint8.byteOffset, uint8.byteLength);\n            var value;\n            if (dv.getBigUint64) {\n                value = dv.getBigUint64(0);\n                if (value < Number.MAX_SAFE_INTEGER) {\n                    return Number(value);\n                }\n                return value;\n            }\n            return dv.getUint32(0) * MAX_UINT32$1 + dv.getUint32(4);\n        };\n        var numbers = {\n            getUint64: getUint64$3,\n            MAX_UINT32: MAX_UINT32$1\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Functions that generate fragmented MP4s suitable for use with Media\n         * Source Extensions.\n         */\n\n        var MAX_UINT32 = numbers.MAX_UINT32;\n        var box, dinf, esds, ftyp, mdat, mfhd, minf, moof, moov, mvex, mvhd, trak, tkhd, mdia, mdhd, hdlr, sdtp, stbl, stsd, traf, trex, trun$1, types, MAJOR_BRAND, MINOR_VERSION, AVC1_BRAND, VIDEO_HDLR, AUDIO_HDLR, HDLR_TYPES, VMHD, SMHD, DREF, STCO, STSC, STSZ, STTS; // pre-calculate constants\n\n        (function () {\n            var i;\n            types = {\n                avc1: [],\n                // codingname\n                avcC: [],\n                btrt: [],\n                dinf: [],\n                dref: [],\n                esds: [],\n                ftyp: [],\n                hdlr: [],\n                mdat: [],\n                mdhd: [],\n                mdia: [],\n                mfhd: [],\n                minf: [],\n                moof: [],\n                moov: [],\n                mp4a: [],\n                // codingname\n                mvex: [],\n                mvhd: [],\n                pasp: [],\n                sdtp: [],\n                smhd: [],\n                stbl: [],\n                stco: [],\n                stsc: [],\n                stsd: [],\n                stsz: [],\n                stts: [],\n                styp: [],\n                tfdt: [],\n                tfhd: [],\n                traf: [],\n                trak: [],\n                trun: [],\n                trex: [],\n                tkhd: [],\n                vmhd: []\n            }; // In environments where Uint8Array is undefined (e.g., IE8), skip set up so that we\n            // don't throw an error\n\n            if (typeof Uint8Array === 'undefined') {\n                return;\n            }\n            for (i in types) {\n                if (types.hasOwnProperty(i)) {\n                    types[i] = [i.charCodeAt(0), i.charCodeAt(1), i.charCodeAt(2), i.charCodeAt(3)];\n                }\n            }\n            MAJOR_BRAND = new Uint8Array(['i'.charCodeAt(0), 's'.charCodeAt(0), 'o'.charCodeAt(0), 'm'.charCodeAt(0)]);\n            AVC1_BRAND = new Uint8Array(['a'.charCodeAt(0), 'v'.charCodeAt(0), 'c'.charCodeAt(0), '1'.charCodeAt(0)]);\n            MINOR_VERSION = new Uint8Array([0, 0, 0, 1]);\n            VIDEO_HDLR = new Uint8Array([0x00,\n                // version 0\n                0x00, 0x00, 0x00,\n                // flags\n                0x00, 0x00, 0x00, 0x00,\n                // pre_defined\n                0x76, 0x69, 0x64, 0x65,\n                // handler_type: 'vide'\n                0x00, 0x00, 0x00, 0x00,\n                // reserved\n                0x00, 0x00, 0x00, 0x00,\n                // reserved\n                0x00, 0x00, 0x00, 0x00,\n                // reserved\n                0x56, 0x69, 0x64, 0x65, 0x6f, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'VideoHandler'\n            ]);\n\n            AUDIO_HDLR = new Uint8Array([0x00,\n                // version 0\n                0x00, 0x00, 0x00,\n                // flags\n                0x00, 0x00, 0x00, 0x00,\n                // pre_defined\n                0x73, 0x6f, 0x75, 0x6e,\n                // handler_type: 'soun'\n                0x00, 0x00, 0x00, 0x00,\n                // reserved\n                0x00, 0x00, 0x00, 0x00,\n                // reserved\n                0x00, 0x00, 0x00, 0x00,\n                // reserved\n                0x53, 0x6f, 0x75, 0x6e, 0x64, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'SoundHandler'\n            ]);\n\n            HDLR_TYPES = {\n                video: VIDEO_HDLR,\n                audio: AUDIO_HDLR\n            };\n            DREF = new Uint8Array([0x00,\n                // version 0\n                0x00, 0x00, 0x00,\n                // flags\n                0x00, 0x00, 0x00, 0x01,\n                // entry_count\n                0x00, 0x00, 0x00, 0x0c,\n                // entry_size\n                0x75, 0x72, 0x6c, 0x20,\n                // 'url' type\n                0x00,\n                // version 0\n                0x00, 0x00, 0x01 // entry_flags\n            ]);\n\n            SMHD = new Uint8Array([0x00,\n                // version\n                0x00, 0x00, 0x00,\n                // flags\n                0x00, 0x00,\n                // balance, 0 means centered\n                0x00, 0x00 // reserved\n            ]);\n\n            STCO = new Uint8Array([0x00,\n                // version\n                0x00, 0x00, 0x00,\n                // flags\n                0x00, 0x00, 0x00, 0x00 // entry_count\n            ]);\n\n            STSC = STCO;\n            STSZ = new Uint8Array([0x00,\n                // version\n                0x00, 0x00, 0x00,\n                // flags\n                0x00, 0x00, 0x00, 0x00,\n                // sample_size\n                0x00, 0x00, 0x00, 0x00 // sample_count\n            ]);\n\n            STTS = STCO;\n            VMHD = new Uint8Array([0x00,\n                // version\n                0x00, 0x00, 0x01,\n                // flags\n                0x00, 0x00,\n                // graphicsmode\n                0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // opcolor\n            ]);\n        })();\n\n        box = function (type) {\n            var payload = [],\n                size = 0,\n                i,\n                result,\n                view;\n            for (i = 1; i < arguments.length; i++) {\n                payload.push(arguments[i]);\n            }\n            i = payload.length; // calculate the total size we need to allocate\n\n            while (i--) {\n                size += payload[i].byteLength;\n            }\n            result = new Uint8Array(size + 8);\n            view = new DataView(result.buffer, result.byteOffset, result.byteLength);\n            view.setUint32(0, result.byteLength);\n            result.set(type, 4); // copy the payload into the result\n\n            for (i = 0, size = 8; i < payload.length; i++) {\n                result.set(payload[i], size);\n                size += payload[i].byteLength;\n            }\n            return result;\n        };\n        dinf = function () {\n            return box(types.dinf, box(types.dref, DREF));\n        };\n        esds = function (track) {\n            return box(types.esds, new Uint8Array([0x00,\n                // version\n                0x00, 0x00, 0x00,\n                // flags\n                // ES_Descriptor\n                0x03,\n                // tag, ES_DescrTag\n                0x19,\n                // length\n                0x00, 0x00,\n                // ES_ID\n                0x00,\n                // streamDependenceFlag, URL_flag, reserved, streamPriority\n                // DecoderConfigDescriptor\n                0x04,\n                // tag, DecoderConfigDescrTag\n                0x11,\n                // length\n                0x40,\n                // object type\n                0x15,\n                // streamType\n                0x00, 0x06, 0x00,\n                // bufferSizeDB\n                0x00, 0x00, 0xda, 0xc0,\n                // maxBitrate\n                0x00, 0x00, 0xda, 0xc0,\n                // avgBitrate\n                // DecoderSpecificInfo\n                0x05,\n                // tag, DecoderSpecificInfoTag\n                0x02,\n                // length\n                // ISO/IEC 14496-3, AudioSpecificConfig\n                // for samplingFrequencyIndex see ISO/IEC 13818-7:2006, 8.1.3.2.2, Table 35\n                track.audioobjecttype << 3 | track.samplingfrequencyindex >>> 1, track.samplingfrequencyindex << 7 | track.channelcount << 3, 0x06, 0x01, 0x02 // GASpecificConfig\n            ]));\n        };\n\n        ftyp = function () {\n            return box(types.ftyp, MAJOR_BRAND, MINOR_VERSION, MAJOR_BRAND, AVC1_BRAND);\n        };\n        hdlr = function (type) {\n            return box(types.hdlr, HDLR_TYPES[type]);\n        };\n        mdat = function (data) {\n            return box(types.mdat, data);\n        };\n        mdhd = function (track) {\n            var result = new Uint8Array([0x00,\n                // version 0\n                0x00, 0x00, 0x00,\n                // flags\n                0x00, 0x00, 0x00, 0x02,\n                // creation_time\n                0x00, 0x00, 0x00, 0x03,\n                // modification_time\n                0x00, 0x01, 0x5f, 0x90,\n                // timescale, 90,000 \"ticks\" per second\n                track.duration >>> 24 & 0xFF, track.duration >>> 16 & 0xFF, track.duration >>> 8 & 0xFF, track.duration & 0xFF,\n                // duration\n                0x55, 0xc4,\n                // 'und' language (undetermined)\n                0x00, 0x00]); // Use the sample rate from the track metadata, when it is\n            // defined. The sample rate can be parsed out of an ADTS header, for\n            // instance.\n\n            if (track.samplerate) {\n                result[12] = track.samplerate >>> 24 & 0xFF;\n                result[13] = track.samplerate >>> 16 & 0xFF;\n                result[14] = track.samplerate >>> 8 & 0xFF;\n                result[15] = track.samplerate & 0xFF;\n            }\n            return box(types.mdhd, result);\n        };\n        mdia = function (track) {\n            return box(types.mdia, mdhd(track), hdlr(track.type), minf(track));\n        };\n        mfhd = function (sequenceNumber) {\n            return box(types.mfhd, new Uint8Array([0x00, 0x00, 0x00, 0x00,\n                // flags\n                (sequenceNumber & 0xFF000000) >> 24, (sequenceNumber & 0xFF0000) >> 16, (sequenceNumber & 0xFF00) >> 8, sequenceNumber & 0xFF // sequence_number\n            ]));\n        };\n\n        minf = function (track) {\n            return box(types.minf, track.type === 'video' ? box(types.vmhd, VMHD) : box(types.smhd, SMHD), dinf(), stbl(track));\n        };\n        moof = function (sequenceNumber, tracks) {\n            var trackFragments = [],\n                i = tracks.length; // build traf boxes for each track fragment\n\n            while (i--) {\n                trackFragments[i] = traf(tracks[i]);\n            }\n            return box.apply(null, [types.moof, mfhd(sequenceNumber)].concat(trackFragments));\n        };\n        /**\n         * Returns a movie box.\n         * @param tracks {array} the tracks associated with this movie\n         * @see ISO/IEC 14496-12:2012(E), section 8.2.1\n         */\n\n        moov = function (tracks) {\n            var i = tracks.length,\n                boxes = [];\n            while (i--) {\n                boxes[i] = trak(tracks[i]);\n            }\n            return box.apply(null, [types.moov, mvhd(0xffffffff)].concat(boxes).concat(mvex(tracks)));\n        };\n        mvex = function (tracks) {\n            var i = tracks.length,\n                boxes = [];\n            while (i--) {\n                boxes[i] = trex(tracks[i]);\n            }\n            return box.apply(null, [types.mvex].concat(boxes));\n        };\n        mvhd = function (duration) {\n            var bytes = new Uint8Array([0x00,\n                // version 0\n                0x00, 0x00, 0x00,\n                // flags\n                0x00, 0x00, 0x00, 0x01,\n                // creation_time\n                0x00, 0x00, 0x00, 0x02,\n                // modification_time\n                0x00, 0x01, 0x5f, 0x90,\n                // timescale, 90,000 \"ticks\" per second\n                (duration & 0xFF000000) >> 24, (duration & 0xFF0000) >> 16, (duration & 0xFF00) >> 8, duration & 0xFF,\n                // duration\n                0x00, 0x01, 0x00, 0x00,\n                // 1.0 rate\n                0x01, 0x00,\n                // 1.0 volume\n                0x00, 0x00,\n                // reserved\n                0x00, 0x00, 0x00, 0x00,\n                // reserved\n                0x00, 0x00, 0x00, 0x00,\n                // reserved\n                0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00,\n                // transformation: unity matrix\n                0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\n                // pre_defined\n                0xff, 0xff, 0xff, 0xff // next_track_ID\n            ]);\n\n            return box(types.mvhd, bytes);\n        };\n        sdtp = function (track) {\n            var samples = track.samples || [],\n                bytes = new Uint8Array(4 + samples.length),\n                flags,\n                i; // leave the full box header (4 bytes) all zero\n            // write the sample table\n\n            for (i = 0; i < samples.length; i++) {\n                flags = samples[i].flags;\n                bytes[i + 4] = flags.dependsOn << 4 | flags.isDependedOn << 2 | flags.hasRedundancy;\n            }\n            return box(types.sdtp, bytes);\n        };\n        stbl = function (track) {\n            return box(types.stbl, stsd(track), box(types.stts, STTS), box(types.stsc, STSC), box(types.stsz, STSZ), box(types.stco, STCO));\n        };\n        (function () {\n            var videoSample, audioSample;\n            stsd = function (track) {\n                return box(types.stsd, new Uint8Array([0x00,\n                    // version 0\n                    0x00, 0x00, 0x00,\n                    // flags\n                    0x00, 0x00, 0x00, 0x01]), track.type === 'video' ? videoSample(track) : audioSample(track));\n            };\n            videoSample = function (track) {\n                var sps = track.sps || [],\n                    pps = track.pps || [],\n                    sequenceParameterSets = [],\n                    pictureParameterSets = [],\n                    i,\n                    avc1Box; // assemble the SPSs\n\n                for (i = 0; i < sps.length; i++) {\n                    sequenceParameterSets.push((sps[i].byteLength & 0xFF00) >>> 8);\n                    sequenceParameterSets.push(sps[i].byteLength & 0xFF); // sequenceParameterSetLength\n\n                    sequenceParameterSets = sequenceParameterSets.concat(Array.prototype.slice.call(sps[i])); // SPS\n                } // assemble the PPSs\n\n                for (i = 0; i < pps.length; i++) {\n                    pictureParameterSets.push((pps[i].byteLength & 0xFF00) >>> 8);\n                    pictureParameterSets.push(pps[i].byteLength & 0xFF);\n                    pictureParameterSets = pictureParameterSets.concat(Array.prototype.slice.call(pps[i]));\n                }\n                avc1Box = [types.avc1, new Uint8Array([0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\n                    // reserved\n                    0x00, 0x01,\n                    // data_reference_index\n                    0x00, 0x00,\n                    // pre_defined\n                    0x00, 0x00,\n                    // reserved\n                    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\n                    // pre_defined\n                    (track.width & 0xff00) >> 8, track.width & 0xff,\n                    // width\n                    (track.height & 0xff00) >> 8, track.height & 0xff,\n                    // height\n                    0x00, 0x48, 0x00, 0x00,\n                    // horizresolution\n                    0x00, 0x48, 0x00, 0x00,\n                    // vertresolution\n                    0x00, 0x00, 0x00, 0x00,\n                    // reserved\n                    0x00, 0x01,\n                    // frame_count\n                    0x13, 0x76, 0x69, 0x64, 0x65, 0x6f, 0x6a, 0x73, 0x2d, 0x63, 0x6f, 0x6e, 0x74, 0x72, 0x69, 0x62, 0x2d, 0x68, 0x6c, 0x73, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\n                    // compressorname\n                    0x00, 0x18,\n                    // depth = 24\n                    0x11, 0x11 // pre_defined = -1\n                ]), box(types.avcC, new Uint8Array([0x01,\n                    // configurationVersion\n                    track.profileIdc,\n                    // AVCProfileIndication\n                    track.profileCompatibility,\n                    // profile_compatibility\n                    track.levelIdc,\n                    // AVCLevelIndication\n                    0xff // lengthSizeMinusOne, hard-coded to 4 bytes\n                ].concat([sps.length],\n                    // numOfSequenceParameterSets\n                    sequenceParameterSets,\n                    // \"SPS\"\n                    [pps.length],\n                    // numOfPictureParameterSets\n                    pictureParameterSets // \"PPS\"\n                ))), box(types.btrt, new Uint8Array([0x00, 0x1c, 0x9c, 0x80,\n                    // bufferSizeDB\n                    0x00, 0x2d, 0xc6, 0xc0,\n                    // maxBitrate\n                    0x00, 0x2d, 0xc6, 0xc0 // avgBitrate\n                ]))];\n\n                if (track.sarRatio) {\n                    var hSpacing = track.sarRatio[0],\n                        vSpacing = track.sarRatio[1];\n                    avc1Box.push(box(types.pasp, new Uint8Array([(hSpacing & 0xFF000000) >> 24, (hSpacing & 0xFF0000) >> 16, (hSpacing & 0xFF00) >> 8, hSpacing & 0xFF, (vSpacing & 0xFF000000) >> 24, (vSpacing & 0xFF0000) >> 16, (vSpacing & 0xFF00) >> 8, vSpacing & 0xFF])));\n                }\n                return box.apply(null, avc1Box);\n            };\n            audioSample = function (track) {\n                return box(types.mp4a, new Uint8Array([\n                    // SampleEntry, ISO/IEC 14496-12\n                    0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\n                    // reserved\n                    0x00, 0x01,\n                    // data_reference_index\n                    // AudioSampleEntry, ISO/IEC 14496-12\n                    0x00, 0x00, 0x00, 0x00,\n                    // reserved\n                    0x00, 0x00, 0x00, 0x00,\n                    // reserved\n                    (track.channelcount & 0xff00) >> 8, track.channelcount & 0xff,\n                    // channelcount\n                    (track.samplesize & 0xff00) >> 8, track.samplesize & 0xff,\n                    // samplesize\n                    0x00, 0x00,\n                    // pre_defined\n                    0x00, 0x00,\n                    // reserved\n                    (track.samplerate & 0xff00) >> 8, track.samplerate & 0xff, 0x00, 0x00 // samplerate, 16.16\n                    // MP4AudioSampleEntry, ISO/IEC 14496-14\n                ]), esds(track));\n            };\n        })();\n        tkhd = function (track) {\n            var result = new Uint8Array([0x00,\n                // version 0\n                0x00, 0x00, 0x07,\n                // flags\n                0x00, 0x00, 0x00, 0x00,\n                // creation_time\n                0x00, 0x00, 0x00, 0x00,\n                // modification_time\n                (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF,\n                // track_ID\n                0x00, 0x00, 0x00, 0x00,\n                // reserved\n                (track.duration & 0xFF000000) >> 24, (track.duration & 0xFF0000) >> 16, (track.duration & 0xFF00) >> 8, track.duration & 0xFF,\n                // duration\n                0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\n                // reserved\n                0x00, 0x00,\n                // layer\n                0x00, 0x00,\n                // alternate_group\n                0x01, 0x00,\n                // non-audio track volume\n                0x00, 0x00,\n                // reserved\n                0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00,\n                // transformation: unity matrix\n                (track.width & 0xFF00) >> 8, track.width & 0xFF, 0x00, 0x00,\n                // width\n                (track.height & 0xFF00) >> 8, track.height & 0xFF, 0x00, 0x00 // height\n            ]);\n\n            return box(types.tkhd, result);\n        };\n        /**\n         * Generate a track fragment (traf) box. A traf box collects metadata\n         * about tracks in a movie fragment (moof) box.\n         */\n\n        traf = function (track) {\n            var trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun, sampleDependencyTable, dataOffset, upperWordBaseMediaDecodeTime, lowerWordBaseMediaDecodeTime;\n            trackFragmentHeader = box(types.tfhd, new Uint8Array([0x00,\n                // version 0\n                0x00, 0x00, 0x3a,\n                // flags\n                (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF,\n                // track_ID\n                0x00, 0x00, 0x00, 0x01,\n                // sample_description_index\n                0x00, 0x00, 0x00, 0x00,\n                // default_sample_duration\n                0x00, 0x00, 0x00, 0x00,\n                // default_sample_size\n                0x00, 0x00, 0x00, 0x00 // default_sample_flags\n            ]));\n\n            upperWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime / MAX_UINT32);\n            lowerWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime % MAX_UINT32);\n            trackFragmentDecodeTime = box(types.tfdt, new Uint8Array([0x01,\n                // version 1\n                0x00, 0x00, 0x00,\n                // flags\n                // baseMediaDecodeTime\n                upperWordBaseMediaDecodeTime >>> 24 & 0xFF, upperWordBaseMediaDecodeTime >>> 16 & 0xFF, upperWordBaseMediaDecodeTime >>> 8 & 0xFF, upperWordBaseMediaDecodeTime & 0xFF, lowerWordBaseMediaDecodeTime >>> 24 & 0xFF, lowerWordBaseMediaDecodeTime >>> 16 & 0xFF, lowerWordBaseMediaDecodeTime >>> 8 & 0xFF, lowerWordBaseMediaDecodeTime & 0xFF])); // the data offset specifies the number of bytes from the start of\n            // the containing moof to the first payload byte of the associated\n            // mdat\n\n            dataOffset = 32 +\n                // tfhd\n                20 +\n                // tfdt\n                8 +\n                // traf header\n                16 +\n                // mfhd\n                8 +\n                // moof header\n                8; // mdat header\n            // audio tracks require less metadata\n\n            if (track.type === 'audio') {\n                trackFragmentRun = trun$1(track, dataOffset);\n                return box(types.traf, trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun);\n            } // video tracks should contain an independent and disposable samples\n            // box (sdtp)\n            // generate one and adjust offsets to match\n\n            sampleDependencyTable = sdtp(track);\n            trackFragmentRun = trun$1(track, sampleDependencyTable.length + dataOffset);\n            return box(types.traf, trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun, sampleDependencyTable);\n        };\n        /**\n         * Generate a track box.\n         * @param track {object} a track definition\n         * @return {Uint8Array} the track box\n         */\n\n        trak = function (track) {\n            track.duration = track.duration || 0xffffffff;\n            return box(types.trak, tkhd(track), mdia(track));\n        };\n        trex = function (track) {\n            var result = new Uint8Array([0x00,\n                // version 0\n                0x00, 0x00, 0x00,\n                // flags\n                (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF,\n                // track_ID\n                0x00, 0x00, 0x00, 0x01,\n                // default_sample_description_index\n                0x00, 0x00, 0x00, 0x00,\n                // default_sample_duration\n                0x00, 0x00, 0x00, 0x00,\n                // default_sample_size\n                0x00, 0x01, 0x00, 0x01 // default_sample_flags\n            ]); // the last two bytes of default_sample_flags is the sample\n            // degradation priority, a hint about the importance of this sample\n            // relative to others. Lower the degradation priority for all sample\n            // types other than video.\n\n            if (track.type !== 'video') {\n                result[result.length - 1] = 0x00;\n            }\n            return box(types.trex, result);\n        };\n        (function () {\n            var audioTrun, videoTrun, trunHeader; // This method assumes all samples are uniform. That is, if a\n            // duration is present for the first sample, it will be present for\n            // all subsequent samples.\n            // see ISO/IEC 14496-12:2012, Section 8.8.8.1\n\n            trunHeader = function (samples, offset) {\n                var durationPresent = 0,\n                    sizePresent = 0,\n                    flagsPresent = 0,\n                    compositionTimeOffset = 0; // trun flag constants\n\n                if (samples.length) {\n                    if (samples[0].duration !== undefined) {\n                        durationPresent = 0x1;\n                    }\n                    if (samples[0].size !== undefined) {\n                        sizePresent = 0x2;\n                    }\n                    if (samples[0].flags !== undefined) {\n                        flagsPresent = 0x4;\n                    }\n                    if (samples[0].compositionTimeOffset !== undefined) {\n                        compositionTimeOffset = 0x8;\n                    }\n                }\n                return [0x00,\n                    // version 0\n                    0x00, durationPresent | sizePresent | flagsPresent | compositionTimeOffset, 0x01,\n                    // flags\n                    (samples.length & 0xFF000000) >>> 24, (samples.length & 0xFF0000) >>> 16, (samples.length & 0xFF00) >>> 8, samples.length & 0xFF,\n                    // sample_count\n                    (offset & 0xFF000000) >>> 24, (offset & 0xFF0000) >>> 16, (offset & 0xFF00) >>> 8, offset & 0xFF // data_offset\n                ];\n            };\n\n            videoTrun = function (track, offset) {\n                var bytesOffest, bytes, header, samples, sample, i;\n                samples = track.samples || [];\n                offset += 8 + 12 + 16 * samples.length;\n                header = trunHeader(samples, offset);\n                bytes = new Uint8Array(header.length + samples.length * 16);\n                bytes.set(header);\n                bytesOffest = header.length;\n                for (i = 0; i < samples.length; i++) {\n                    sample = samples[i];\n                    bytes[bytesOffest++] = (sample.duration & 0xFF000000) >>> 24;\n                    bytes[bytesOffest++] = (sample.duration & 0xFF0000) >>> 16;\n                    bytes[bytesOffest++] = (sample.duration & 0xFF00) >>> 8;\n                    bytes[bytesOffest++] = sample.duration & 0xFF; // sample_duration\n\n                    bytes[bytesOffest++] = (sample.size & 0xFF000000) >>> 24;\n                    bytes[bytesOffest++] = (sample.size & 0xFF0000) >>> 16;\n                    bytes[bytesOffest++] = (sample.size & 0xFF00) >>> 8;\n                    bytes[bytesOffest++] = sample.size & 0xFF; // sample_size\n\n                    bytes[bytesOffest++] = sample.flags.isLeading << 2 | sample.flags.dependsOn;\n                    bytes[bytesOffest++] = sample.flags.isDependedOn << 6 | sample.flags.hasRedundancy << 4 | sample.flags.paddingValue << 1 | sample.flags.isNonSyncSample;\n                    bytes[bytesOffest++] = sample.flags.degradationPriority & 0xF0 << 8;\n                    bytes[bytesOffest++] = sample.flags.degradationPriority & 0x0F; // sample_flags\n\n                    bytes[bytesOffest++] = (sample.compositionTimeOffset & 0xFF000000) >>> 24;\n                    bytes[bytesOffest++] = (sample.compositionTimeOffset & 0xFF0000) >>> 16;\n                    bytes[bytesOffest++] = (sample.compositionTimeOffset & 0xFF00) >>> 8;\n                    bytes[bytesOffest++] = sample.compositionTimeOffset & 0xFF; // sample_composition_time_offset\n                }\n\n                return box(types.trun, bytes);\n            };\n            audioTrun = function (track, offset) {\n                var bytes, bytesOffest, header, samples, sample, i;\n                samples = track.samples || [];\n                offset += 8 + 12 + 8 * samples.length;\n                header = trunHeader(samples, offset);\n                bytes = new Uint8Array(header.length + samples.length * 8);\n                bytes.set(header);\n                bytesOffest = header.length;\n                for (i = 0; i < samples.length; i++) {\n                    sample = samples[i];\n                    bytes[bytesOffest++] = (sample.duration & 0xFF000000) >>> 24;\n                    bytes[bytesOffest++] = (sample.duration & 0xFF0000) >>> 16;\n                    bytes[bytesOffest++] = (sample.duration & 0xFF00) >>> 8;\n                    bytes[bytesOffest++] = sample.duration & 0xFF; // sample_duration\n\n                    bytes[bytesOffest++] = (sample.size & 0xFF000000) >>> 24;\n                    bytes[bytesOffest++] = (sample.size & 0xFF0000) >>> 16;\n                    bytes[bytesOffest++] = (sample.size & 0xFF00) >>> 8;\n                    bytes[bytesOffest++] = sample.size & 0xFF; // sample_size\n                }\n\n                return box(types.trun, bytes);\n            };\n            trun$1 = function (track, offset) {\n                if (track.type === 'audio') {\n                    return audioTrun(track, offset);\n                }\n                return videoTrun(track, offset);\n            };\n        })();\n        var mp4Generator = {\n            ftyp: ftyp,\n            mdat: mdat,\n            moof: moof,\n            moov: moov,\n            initSegment: function (tracks) {\n                var fileType = ftyp(),\n                    movie = moov(tracks),\n                    result;\n                result = new Uint8Array(fileType.byteLength + movie.byteLength);\n                result.set(fileType);\n                result.set(movie, fileType.byteLength);\n                return result;\n            }\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n            // composed of the nal units that make up that frame\n            // Also keep track of cummulative data about the frame from the nal units such\n            // as the frame duration, starting pts, etc.\n\n        var groupNalsIntoFrames = function (nalUnits) {\n                var i,\n                    currentNal,\n                    currentFrame = [],\n                    frames = []; // TODO added for LHLS, make sure this is OK\n\n                frames.byteLength = 0;\n                frames.nalCount = 0;\n                frames.duration = 0;\n                currentFrame.byteLength = 0;\n                for (i = 0; i < nalUnits.length; i++) {\n                    currentNal = nalUnits[i]; // Split on 'aud'-type nal units\n\n                    if (currentNal.nalUnitType === 'access_unit_delimiter_rbsp') {\n                        // Since the very first nal unit is expected to be an AUD\n                        // only push to the frames array when currentFrame is not empty\n                        if (currentFrame.length) {\n                            currentFrame.duration = currentNal.dts - currentFrame.dts; // TODO added for LHLS, make sure this is OK\n\n                            frames.byteLength += currentFrame.byteLength;\n                            frames.nalCount += currentFrame.length;\n                            frames.duration += currentFrame.duration;\n                            frames.push(currentFrame);\n                        }\n                        currentFrame = [currentNal];\n                        currentFrame.byteLength = currentNal.data.byteLength;\n                        currentFrame.pts = currentNal.pts;\n                        currentFrame.dts = currentNal.dts;\n                    } else {\n                        // Specifically flag key frames for ease of use later\n                        if (currentNal.nalUnitType === 'slice_layer_without_partitioning_rbsp_idr') {\n                            currentFrame.keyFrame = true;\n                        }\n                        currentFrame.duration = currentNal.dts - currentFrame.dts;\n                        currentFrame.byteLength += currentNal.data.byteLength;\n                        currentFrame.push(currentNal);\n                    }\n                } // For the last frame, use the duration of the previous frame if we\n                // have nothing better to go on\n\n                if (frames.length && (!currentFrame.duration || currentFrame.duration <= 0)) {\n                    currentFrame.duration = frames[frames.length - 1].duration;\n                } // Push the final frame\n                // TODO added for LHLS, make sure this is OK\n\n                frames.byteLength += currentFrame.byteLength;\n                frames.nalCount += currentFrame.length;\n                frames.duration += currentFrame.duration;\n                frames.push(currentFrame);\n                return frames;\n            }; // Convert an array of frames into an array of Gop with each Gop being composed\n        // of the frames that make up that Gop\n        // Also keep track of cummulative data about the Gop from the frames such as the\n        // Gop duration, starting pts, etc.\n\n        var groupFramesIntoGops = function (frames) {\n            var i,\n                currentFrame,\n                currentGop = [],\n                gops = []; // We must pre-set some of the values on the Gop since we\n            // keep running totals of these values\n\n            currentGop.byteLength = 0;\n            currentGop.nalCount = 0;\n            currentGop.duration = 0;\n            currentGop.pts = frames[0].pts;\n            currentGop.dts = frames[0].dts; // store some metadata about all the Gops\n\n            gops.byteLength = 0;\n            gops.nalCount = 0;\n            gops.duration = 0;\n            gops.pts = frames[0].pts;\n            gops.dts = frames[0].dts;\n            for (i = 0; i < frames.length; i++) {\n                currentFrame = frames[i];\n                if (currentFrame.keyFrame) {\n                    // Since the very first frame is expected to be an keyframe\n                    // only push to the gops array when currentGop is not empty\n                    if (currentGop.length) {\n                        gops.push(currentGop);\n                        gops.byteLength += currentGop.byteLength;\n                        gops.nalCount += currentGop.nalCount;\n                        gops.duration += currentGop.duration;\n                    }\n                    currentGop = [currentFrame];\n                    currentGop.nalCount = currentFrame.length;\n                    currentGop.byteLength = currentFrame.byteLength;\n                    currentGop.pts = currentFrame.pts;\n                    currentGop.dts = currentFrame.dts;\n                    currentGop.duration = currentFrame.duration;\n                } else {\n                    currentGop.duration += currentFrame.duration;\n                    currentGop.nalCount += currentFrame.length;\n                    currentGop.byteLength += currentFrame.byteLength;\n                    currentGop.push(currentFrame);\n                }\n            }\n            if (gops.length && currentGop.duration <= 0) {\n                currentGop.duration = gops[gops.length - 1].duration;\n            }\n            gops.byteLength += currentGop.byteLength;\n            gops.nalCount += currentGop.nalCount;\n            gops.duration += currentGop.duration; // push the final Gop\n\n            gops.push(currentGop);\n            return gops;\n        };\n        /*\n     * Search for the first keyframe in the GOPs and throw away all frames\n     * until that keyframe. Then extend the duration of the pulled keyframe\n     * and pull the PTS and DTS of the keyframe so that it covers the time\n     * range of the frames that were disposed.\n     *\n     * @param {Array} gops video GOPs\n     * @returns {Array} modified video GOPs\n     */\n\n        var extendFirstKeyFrame = function (gops) {\n            var currentGop;\n            if (!gops[0][0].keyFrame && gops.length > 1) {\n                // Remove the first GOP\n                currentGop = gops.shift();\n                gops.byteLength -= currentGop.byteLength;\n                gops.nalCount -= currentGop.nalCount; // Extend the first frame of what is now the\n                // first gop to cover the time period of the\n                // frames we just removed\n\n                gops[0][0].dts = currentGop.dts;\n                gops[0][0].pts = currentGop.pts;\n                gops[0][0].duration += currentGop.duration;\n            }\n            return gops;\n        };\n        /**\n         * Default sample object\n         * see ISO/IEC 14496-12:2012, section 8.6.4.3\n         */\n\n        var createDefaultSample = function () {\n            return {\n                size: 0,\n                flags: {\n                    isLeading: 0,\n                    dependsOn: 1,\n                    isDependedOn: 0,\n                    hasRedundancy: 0,\n                    degradationPriority: 0,\n                    isNonSyncSample: 1\n                }\n            };\n        };\n        /*\n     * Collates information from a video frame into an object for eventual\n     * entry into an MP4 sample table.\n     *\n     * @param {Object} frame the video frame\n     * @param {Number} dataOffset the byte offset to position the sample\n     * @return {Object} object containing sample table info for a frame\n     */\n\n        var sampleForFrame = function (frame, dataOffset) {\n            var sample = createDefaultSample();\n            sample.dataOffset = dataOffset;\n            sample.compositionTimeOffset = frame.pts - frame.dts;\n            sample.duration = frame.duration;\n            sample.size = 4 * frame.length; // Space for nal unit size\n\n            sample.size += frame.byteLength;\n            if (frame.keyFrame) {\n                sample.flags.dependsOn = 2;\n                sample.flags.isNonSyncSample = 0;\n            }\n            return sample;\n        }; // generate the track's sample table from an array of gops\n\n        var generateSampleTable$1 = function (gops, baseDataOffset) {\n            var h,\n                i,\n                sample,\n                currentGop,\n                currentFrame,\n                dataOffset = baseDataOffset || 0,\n                samples = [];\n            for (h = 0; h < gops.length; h++) {\n                currentGop = gops[h];\n                for (i = 0; i < currentGop.length; i++) {\n                    currentFrame = currentGop[i];\n                    sample = sampleForFrame(currentFrame, dataOffset);\n                    dataOffset += sample.size;\n                    samples.push(sample);\n                }\n            }\n            return samples;\n        }; // generate the track's raw mdat data from an array of gops\n\n        var concatenateNalData = function (gops) {\n            var h,\n                i,\n                j,\n                currentGop,\n                currentFrame,\n                currentNal,\n                dataOffset = 0,\n                nalsByteLength = gops.byteLength,\n                numberOfNals = gops.nalCount,\n                totalByteLength = nalsByteLength + 4 * numberOfNals,\n                data = new Uint8Array(totalByteLength),\n                view = new DataView(data.buffer); // For each Gop..\n\n            for (h = 0; h < gops.length; h++) {\n                currentGop = gops[h]; // For each Frame..\n\n                for (i = 0; i < currentGop.length; i++) {\n                    currentFrame = currentGop[i]; // For each NAL..\n\n                    for (j = 0; j < currentFrame.length; j++) {\n                        currentNal = currentFrame[j];\n                        view.setUint32(dataOffset, currentNal.data.byteLength);\n                        dataOffset += 4;\n                        data.set(currentNal.data, dataOffset);\n                        dataOffset += currentNal.data.byteLength;\n                    }\n                }\n            }\n            return data;\n        }; // generate the track's sample table from a frame\n\n        var generateSampleTableForFrame = function (frame, baseDataOffset) {\n            var sample,\n                dataOffset = baseDataOffset || 0,\n                samples = [];\n            sample = sampleForFrame(frame, dataOffset);\n            samples.push(sample);\n            return samples;\n        }; // generate the track's raw mdat data from a frame\n\n        var concatenateNalDataForFrame = function (frame) {\n            var i,\n                currentNal,\n                dataOffset = 0,\n                nalsByteLength = frame.byteLength,\n                numberOfNals = frame.length,\n                totalByteLength = nalsByteLength + 4 * numberOfNals,\n                data = new Uint8Array(totalByteLength),\n                view = new DataView(data.buffer); // For each NAL..\n\n            for (i = 0; i < frame.length; i++) {\n                currentNal = frame[i];\n                view.setUint32(dataOffset, currentNal.data.byteLength);\n                dataOffset += 4;\n                data.set(currentNal.data, dataOffset);\n                dataOffset += currentNal.data.byteLength;\n            }\n            return data;\n        };\n        var frameUtils$1 = {\n            groupNalsIntoFrames: groupNalsIntoFrames,\n            groupFramesIntoGops: groupFramesIntoGops,\n            extendFirstKeyFrame: extendFirstKeyFrame,\n            generateSampleTable: generateSampleTable$1,\n            concatenateNalData: concatenateNalData,\n            generateSampleTableForFrame: generateSampleTableForFrame,\n            concatenateNalDataForFrame: concatenateNalDataForFrame\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n\n        var highPrefix = [33, 16, 5, 32, 164, 27];\n        var lowPrefix = [33, 65, 108, 84, 1, 2, 4, 8, 168, 2, 4, 8, 17, 191, 252];\n        var zeroFill = function (count) {\n            var a = [];\n            while (count--) {\n                a.push(0);\n            }\n            return a;\n        };\n        var makeTable = function (metaTable) {\n            return Object.keys(metaTable).reduce(function (obj, key) {\n                obj[key] = new Uint8Array(metaTable[key].reduce(function (arr, part) {\n                    return arr.concat(part);\n                }, []));\n                return obj;\n            }, {});\n        };\n        var silence;\n        var silence_1 = function () {\n            if (!silence) {\n                // Frames-of-silence to use for filling in missing AAC frames\n                var coneOfSilence = {\n                    96000: [highPrefix, [227, 64], zeroFill(154), [56]],\n                    88200: [highPrefix, [231], zeroFill(170), [56]],\n                    64000: [highPrefix, [248, 192], zeroFill(240), [56]],\n                    48000: [highPrefix, [255, 192], zeroFill(268), [55, 148, 128], zeroFill(54), [112]],\n                    44100: [highPrefix, [255, 192], zeroFill(268), [55, 163, 128], zeroFill(84), [112]],\n                    32000: [highPrefix, [255, 192], zeroFill(268), [55, 234], zeroFill(226), [112]],\n                    24000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 112], zeroFill(126), [224]],\n                    16000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 255], zeroFill(269), [223, 108], zeroFill(195), [1, 192]],\n                    12000: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 253, 128], zeroFill(259), [56]],\n                    11025: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 255, 192], zeroFill(268), [55, 175, 128], zeroFill(108), [112]],\n                    8000: [lowPrefix, zeroFill(268), [3, 121, 16], zeroFill(47), [7]]\n                };\n                silence = makeTable(coneOfSilence);\n            }\n            return silence;\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n\n        var ONE_SECOND_IN_TS$4 = 90000,\n            // 90kHz clock\n            secondsToVideoTs,\n            secondsToAudioTs,\n            videoTsToSeconds,\n            audioTsToSeconds,\n            audioTsToVideoTs,\n            videoTsToAudioTs,\n            metadataTsToSeconds;\n        secondsToVideoTs = function (seconds) {\n            return seconds * ONE_SECOND_IN_TS$4;\n        };\n        secondsToAudioTs = function (seconds, sampleRate) {\n            return seconds * sampleRate;\n        };\n        videoTsToSeconds = function (timestamp) {\n            return timestamp / ONE_SECOND_IN_TS$4;\n        };\n        audioTsToSeconds = function (timestamp, sampleRate) {\n            return timestamp / sampleRate;\n        };\n        audioTsToVideoTs = function (timestamp, sampleRate) {\n            return secondsToVideoTs(audioTsToSeconds(timestamp, sampleRate));\n        };\n        videoTsToAudioTs = function (timestamp, sampleRate) {\n            return secondsToAudioTs(videoTsToSeconds(timestamp), sampleRate);\n        };\n        /**\n         * Adjust ID3 tag or caption timing information by the timeline pts values\n         * (if keepOriginalTimestamps is false) and convert to seconds\n         */\n\n        metadataTsToSeconds = function (timestamp, timelineStartPts, keepOriginalTimestamps) {\n            return videoTsToSeconds(keepOriginalTimestamps ? timestamp : timestamp - timelineStartPts);\n        };\n        var clock$2 = {\n            ONE_SECOND_IN_TS: ONE_SECOND_IN_TS$4,\n            secondsToVideoTs: secondsToVideoTs,\n            secondsToAudioTs: secondsToAudioTs,\n            videoTsToSeconds: videoTsToSeconds,\n            audioTsToSeconds: audioTsToSeconds,\n            audioTsToVideoTs: audioTsToVideoTs,\n            videoTsToAudioTs: videoTsToAudioTs,\n            metadataTsToSeconds: metadataTsToSeconds\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n\n        var coneOfSilence = silence_1;\n        var clock$1 = clock$2;\n        /**\n         * Sum the `byteLength` properties of the data in each AAC frame\n         */\n\n        var sumFrameByteLengths = function (array) {\n            var i,\n                currentObj,\n                sum = 0; // sum the byteLength's all each nal unit in the frame\n\n            for (i = 0; i < array.length; i++) {\n                currentObj = array[i];\n                sum += currentObj.data.byteLength;\n            }\n            return sum;\n        }; // Possibly pad (prefix) the audio track with silence if appending this track\n        // would lead to the introduction of a gap in the audio buffer\n\n        var prefixWithSilence = function (track, frames, audioAppendStartTs, videoBaseMediaDecodeTime) {\n            var baseMediaDecodeTimeTs,\n                frameDuration = 0,\n                audioGapDuration = 0,\n                audioFillFrameCount = 0,\n                audioFillDuration = 0,\n                silentFrame,\n                i,\n                firstFrame;\n            if (!frames.length) {\n                return;\n            }\n            baseMediaDecodeTimeTs = clock$1.audioTsToVideoTs(track.baseMediaDecodeTime, track.samplerate); // determine frame clock duration based on sample rate, round up to avoid overfills\n\n            frameDuration = Math.ceil(clock$1.ONE_SECOND_IN_TS / (track.samplerate / 1024));\n            if (audioAppendStartTs && videoBaseMediaDecodeTime) {\n                // insert the shortest possible amount (audio gap or audio to video gap)\n                audioGapDuration = baseMediaDecodeTimeTs - Math.max(audioAppendStartTs, videoBaseMediaDecodeTime); // number of full frames in the audio gap\n\n                audioFillFrameCount = Math.floor(audioGapDuration / frameDuration);\n                audioFillDuration = audioFillFrameCount * frameDuration;\n            } // don't attempt to fill gaps smaller than a single frame or larger\n            // than a half second\n\n            if (audioFillFrameCount < 1 || audioFillDuration > clock$1.ONE_SECOND_IN_TS / 2) {\n                return;\n            }\n            silentFrame = coneOfSilence()[track.samplerate];\n            if (!silentFrame) {\n                // we don't have a silent frame pregenerated for the sample rate, so use a frame\n                // from the content instead\n                silentFrame = frames[0].data;\n            }\n            for (i = 0; i < audioFillFrameCount; i++) {\n                firstFrame = frames[0];\n                frames.splice(0, 0, {\n                    data: silentFrame,\n                    dts: firstFrame.dts - frameDuration,\n                    pts: firstFrame.pts - frameDuration\n                });\n            }\n            track.baseMediaDecodeTime -= Math.floor(clock$1.videoTsToAudioTs(audioFillDuration, track.samplerate));\n            return audioFillDuration;\n        }; // If the audio segment extends before the earliest allowed dts\n        // value, remove AAC frames until starts at or after the earliest\n        // allowed DTS so that we don't end up with a negative baseMedia-\n        // DecodeTime for the audio track\n\n        var trimAdtsFramesByEarliestDts = function (adtsFrames, track, earliestAllowedDts) {\n            if (track.minSegmentDts >= earliestAllowedDts) {\n                return adtsFrames;\n            } // We will need to recalculate the earliest segment Dts\n\n            track.minSegmentDts = Infinity;\n            return adtsFrames.filter(function (currentFrame) {\n                // If this is an allowed frame, keep it and record it's Dts\n                if (currentFrame.dts >= earliestAllowedDts) {\n                    track.minSegmentDts = Math.min(track.minSegmentDts, currentFrame.dts);\n                    track.minSegmentPts = track.minSegmentDts;\n                    return true;\n                } // Otherwise, discard it\n\n                return false;\n            });\n        }; // generate the track's raw mdat data from an array of frames\n\n        var generateSampleTable = function (frames) {\n            var i,\n                currentFrame,\n                samples = [];\n            for (i = 0; i < frames.length; i++) {\n                currentFrame = frames[i];\n                samples.push({\n                    size: currentFrame.data.byteLength,\n                    duration: 1024 // For AAC audio, all samples contain 1024 samples\n                });\n            }\n\n            return samples;\n        }; // generate the track's sample table from an array of frames\n\n        var concatenateFrameData = function (frames) {\n            var i,\n                currentFrame,\n                dataOffset = 0,\n                data = new Uint8Array(sumFrameByteLengths(frames));\n            for (i = 0; i < frames.length; i++) {\n                currentFrame = frames[i];\n                data.set(currentFrame.data, dataOffset);\n                dataOffset += currentFrame.data.byteLength;\n            }\n            return data;\n        };\n        var audioFrameUtils$1 = {\n            prefixWithSilence: prefixWithSilence,\n            trimAdtsFramesByEarliestDts: trimAdtsFramesByEarliestDts,\n            generateSampleTable: generateSampleTable,\n            concatenateFrameData: concatenateFrameData\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n\n        var ONE_SECOND_IN_TS$3 = clock$2.ONE_SECOND_IN_TS;\n        /**\n         * Store information about the start and end of the track and the\n         * duration for each frame/sample we process in order to calculate\n         * the baseMediaDecodeTime\n         */\n\n        var collectDtsInfo = function (track, data) {\n            if (typeof data.pts === 'number') {\n                if (track.timelineStartInfo.pts === undefined) {\n                    track.timelineStartInfo.pts = data.pts;\n                }\n                if (track.minSegmentPts === undefined) {\n                    track.minSegmentPts = data.pts;\n                } else {\n                    track.minSegmentPts = Math.min(track.minSegmentPts, data.pts);\n                }\n                if (track.maxSegmentPts === undefined) {\n                    track.maxSegmentPts = data.pts;\n                } else {\n                    track.maxSegmentPts = Math.max(track.maxSegmentPts, data.pts);\n                }\n            }\n            if (typeof data.dts === 'number') {\n                if (track.timelineStartInfo.dts === undefined) {\n                    track.timelineStartInfo.dts = data.dts;\n                }\n                if (track.minSegmentDts === undefined) {\n                    track.minSegmentDts = data.dts;\n                } else {\n                    track.minSegmentDts = Math.min(track.minSegmentDts, data.dts);\n                }\n                if (track.maxSegmentDts === undefined) {\n                    track.maxSegmentDts = data.dts;\n                } else {\n                    track.maxSegmentDts = Math.max(track.maxSegmentDts, data.dts);\n                }\n            }\n        };\n        /**\n         * Clear values used to calculate the baseMediaDecodeTime between\n         * tracks\n         */\n\n        var clearDtsInfo = function (track) {\n            delete track.minSegmentDts;\n            delete track.maxSegmentDts;\n            delete track.minSegmentPts;\n            delete track.maxSegmentPts;\n        };\n        /**\n         * Calculate the track's baseMediaDecodeTime based on the earliest\n         * DTS the transmuxer has ever seen and the minimum DTS for the\n         * current track\n         * @param track {object} track metadata configuration\n         * @param keepOriginalTimestamps {boolean} If true, keep the timestamps\n         *        in the source; false to adjust the first segment to start at 0.\n         */\n\n        var calculateTrackBaseMediaDecodeTime = function (track, keepOriginalTimestamps) {\n            var baseMediaDecodeTime,\n                scale,\n                minSegmentDts = track.minSegmentDts; // Optionally adjust the time so the first segment starts at zero.\n\n            if (!keepOriginalTimestamps) {\n                minSegmentDts -= track.timelineStartInfo.dts;\n            } // track.timelineStartInfo.baseMediaDecodeTime is the location, in time, where\n            // we want the start of the first segment to be placed\n\n            baseMediaDecodeTime = track.timelineStartInfo.baseMediaDecodeTime; // Add to that the distance this segment is from the very first\n\n            baseMediaDecodeTime += minSegmentDts; // baseMediaDecodeTime must not become negative\n\n            baseMediaDecodeTime = Math.max(0, baseMediaDecodeTime);\n            if (track.type === 'audio') {\n                // Audio has a different clock equal to the sampling_rate so we need to\n                // scale the PTS values into the clock rate of the track\n                scale = track.samplerate / ONE_SECOND_IN_TS$3;\n                baseMediaDecodeTime *= scale;\n                baseMediaDecodeTime = Math.floor(baseMediaDecodeTime);\n            }\n            return baseMediaDecodeTime;\n        };\n        var trackDecodeInfo$1 = {\n            clearDtsInfo: clearDtsInfo,\n            calculateTrackBaseMediaDecodeTime: calculateTrackBaseMediaDecodeTime,\n            collectDtsInfo: collectDtsInfo\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Reads in-band caption information from a video elementary\n         * stream. Captions must follow the CEA-708 standard for injection\n         * into an MPEG-2 transport streams.\n         * @see https://en.wikipedia.org/wiki/CEA-708\n         * @see https://www.gpo.gov/fdsys/pkg/CFR-2007-title47-vol1/pdf/CFR-2007-title47-vol1-sec15-119.pdf\n         */\n            // payload type field to indicate how they are to be\n            // interpreted. CEAS-708 caption content is always transmitted with\n            // payload type 0x04.\n\n        var USER_DATA_REGISTERED_ITU_T_T35 = 4,\n            RBSP_TRAILING_BITS = 128;\n        /**\n         * Parse a supplemental enhancement information (SEI) NAL unit.\n         * Stops parsing once a message of type ITU T T35 has been found.\n         *\n         * @param bytes {Uint8Array} the bytes of a SEI NAL unit\n         * @return {object} the parsed SEI payload\n         * @see Rec. ITU-T H.264, 7.3.2.3.1\n         */\n\n        var parseSei = function (bytes) {\n            var i = 0,\n                result = {\n                    payloadType: -1,\n                    payloadSize: 0\n                },\n                payloadType = 0,\n                payloadSize = 0; // go through the sei_rbsp parsing each each individual sei_message\n\n            while (i < bytes.byteLength) {\n                // stop once we have hit the end of the sei_rbsp\n                if (bytes[i] === RBSP_TRAILING_BITS) {\n                    break;\n                } // Parse payload type\n\n                while (bytes[i] === 0xFF) {\n                    payloadType += 255;\n                    i++;\n                }\n                payloadType += bytes[i++]; // Parse payload size\n\n                while (bytes[i] === 0xFF) {\n                    payloadSize += 255;\n                    i++;\n                }\n                payloadSize += bytes[i++]; // this sei_message is a 608/708 caption so save it and break\n                // there can only ever be one caption message in a frame's sei\n\n                if (!result.payload && payloadType === USER_DATA_REGISTERED_ITU_T_T35) {\n                    var userIdentifier = String.fromCharCode(bytes[i + 3], bytes[i + 4], bytes[i + 5], bytes[i + 6]);\n                    if (userIdentifier === 'GA94') {\n                        result.payloadType = payloadType;\n                        result.payloadSize = payloadSize;\n                        result.payload = bytes.subarray(i, i + payloadSize);\n                        break;\n                    } else {\n                        result.payload = void 0;\n                    }\n                } // skip the payload and parse the next message\n\n                i += payloadSize;\n                payloadType = 0;\n                payloadSize = 0;\n            }\n            return result;\n        }; // see ANSI/SCTE 128-1 (2013), section 8.1\n\n        var parseUserData = function (sei) {\n            // itu_t_t35_contry_code must be 181 (United States) for\n            // captions\n            if (sei.payload[0] !== 181) {\n                return null;\n            } // itu_t_t35_provider_code should be 49 (ATSC) for captions\n\n            if ((sei.payload[1] << 8 | sei.payload[2]) !== 49) {\n                return null;\n            } // the user_identifier should be \"GA94\" to indicate ATSC1 data\n\n            if (String.fromCharCode(sei.payload[3], sei.payload[4], sei.payload[5], sei.payload[6]) !== 'GA94') {\n                return null;\n            } // finally, user_data_type_code should be 0x03 for caption data\n\n            if (sei.payload[7] !== 0x03) {\n                return null;\n            } // return the user_data_type_structure and strip the trailing\n            // marker bits\n\n            return sei.payload.subarray(8, sei.payload.length - 1);\n        }; // see CEA-708-D, section 4.4\n\n        var parseCaptionPackets = function (pts, userData) {\n            var results = [],\n                i,\n                count,\n                offset,\n                data; // if this is just filler, return immediately\n\n            if (!(userData[0] & 0x40)) {\n                return results;\n            } // parse out the cc_data_1 and cc_data_2 fields\n\n            count = userData[0] & 0x1f;\n            for (i = 0; i < count; i++) {\n                offset = i * 3;\n                data = {\n                    type: userData[offset + 2] & 0x03,\n                    pts: pts\n                }; // capture cc data when cc_valid is 1\n\n                if (userData[offset + 2] & 0x04) {\n                    data.ccData = userData[offset + 3] << 8 | userData[offset + 4];\n                    results.push(data);\n                }\n            }\n            return results;\n        };\n        var discardEmulationPreventionBytes$1 = function (data) {\n            var length = data.byteLength,\n                emulationPreventionBytesPositions = [],\n                i = 1,\n                newLength,\n                newData; // Find all `Emulation Prevention Bytes`\n\n            while (i < length - 2) {\n                if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {\n                    emulationPreventionBytesPositions.push(i + 2);\n                    i += 2;\n                } else {\n                    i++;\n                }\n            } // If no Emulation Prevention Bytes were found just return the original\n            // array\n\n            if (emulationPreventionBytesPositions.length === 0) {\n                return data;\n            } // Create a new array to hold the NAL unit data\n\n            newLength = length - emulationPreventionBytesPositions.length;\n            newData = new Uint8Array(newLength);\n            var sourceIndex = 0;\n            for (i = 0; i < newLength; sourceIndex++, i++) {\n                if (sourceIndex === emulationPreventionBytesPositions[0]) {\n                    // Skip this byte\n                    sourceIndex++; // Remove this position index\n\n                    emulationPreventionBytesPositions.shift();\n                }\n                newData[i] = data[sourceIndex];\n            }\n            return newData;\n        }; // exports\n\n        var captionPacketParser = {\n            parseSei: parseSei,\n            parseUserData: parseUserData,\n            parseCaptionPackets: parseCaptionPackets,\n            discardEmulationPreventionBytes: discardEmulationPreventionBytes$1,\n            USER_DATA_REGISTERED_ITU_T_T35: USER_DATA_REGISTERED_ITU_T_T35\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Reads in-band caption information from a video elementary\n         * stream. Captions must follow the CEA-708 standard for injection\n         * into an MPEG-2 transport streams.\n         * @see https://en.wikipedia.org/wiki/CEA-708\n         * @see https://www.gpo.gov/fdsys/pkg/CFR-2007-title47-vol1/pdf/CFR-2007-title47-vol1-sec15-119.pdf\n         */\n            // Link To Transport\n            // -----------------\n\n        var Stream$7 = stream;\n        var cea708Parser = captionPacketParser;\n        var CaptionStream$2 = function (options) {\n            options = options || {};\n            CaptionStream$2.prototype.init.call(this); // parse708captions flag, default to true\n\n            this.parse708captions_ = typeof options.parse708captions === 'boolean' ? options.parse708captions : true;\n            this.captionPackets_ = [];\n            this.ccStreams_ = [new Cea608Stream(0, 0),\n                // eslint-disable-line no-use-before-define\n                new Cea608Stream(0, 1),\n                // eslint-disable-line no-use-before-define\n                new Cea608Stream(1, 0),\n                // eslint-disable-line no-use-before-define\n                new Cea608Stream(1, 1) // eslint-disable-line no-use-before-define\n            ];\n\n            if (this.parse708captions_) {\n                this.cc708Stream_ = new Cea708Stream({\n                    captionServices: options.captionServices\n                }); // eslint-disable-line no-use-before-define\n            }\n\n            this.reset(); // forward data and done events from CCs to this CaptionStream\n\n            this.ccStreams_.forEach(function (cc) {\n                cc.on('data', this.trigger.bind(this, 'data'));\n                cc.on('partialdone', this.trigger.bind(this, 'partialdone'));\n                cc.on('done', this.trigger.bind(this, 'done'));\n            }, this);\n            if (this.parse708captions_) {\n                this.cc708Stream_.on('data', this.trigger.bind(this, 'data'));\n                this.cc708Stream_.on('partialdone', this.trigger.bind(this, 'partialdone'));\n                this.cc708Stream_.on('done', this.trigger.bind(this, 'done'));\n            }\n        };\n        CaptionStream$2.prototype = new Stream$7();\n        CaptionStream$2.prototype.push = function (event) {\n            var sei, userData, newCaptionPackets; // only examine SEI NALs\n\n            if (event.nalUnitType !== 'sei_rbsp') {\n                return;\n            } // parse the sei\n\n            sei = cea708Parser.parseSei(event.escapedRBSP); // no payload data, skip\n\n            if (!sei.payload) {\n                return;\n            } // ignore everything but user_data_registered_itu_t_t35\n\n            if (sei.payloadType !== cea708Parser.USER_DATA_REGISTERED_ITU_T_T35) {\n                return;\n            } // parse out the user data payload\n\n            userData = cea708Parser.parseUserData(sei); // ignore unrecognized userData\n\n            if (!userData) {\n                return;\n            } // Sometimes, the same segment # will be downloaded twice. To stop the\n            // caption data from being processed twice, we track the latest dts we've\n            // received and ignore everything with a dts before that. However, since\n            // data for a specific dts can be split across packets on either side of\n            // a segment boundary, we need to make sure we *don't* ignore the packets\n            // from the *next* segment that have dts === this.latestDts_. By constantly\n            // tracking the number of packets received with dts === this.latestDts_, we\n            // know how many should be ignored once we start receiving duplicates.\n\n            if (event.dts < this.latestDts_) {\n                // We've started getting older data, so set the flag.\n                this.ignoreNextEqualDts_ = true;\n                return;\n            } else if (event.dts === this.latestDts_ && this.ignoreNextEqualDts_) {\n                this.numSameDts_--;\n                if (!this.numSameDts_) {\n                    // We've received the last duplicate packet, time to start processing again\n                    this.ignoreNextEqualDts_ = false;\n                }\n                return;\n            } // parse out CC data packets and save them for later\n\n            newCaptionPackets = cea708Parser.parseCaptionPackets(event.pts, userData);\n            this.captionPackets_ = this.captionPackets_.concat(newCaptionPackets);\n            if (this.latestDts_ !== event.dts) {\n                this.numSameDts_ = 0;\n            }\n            this.numSameDts_++;\n            this.latestDts_ = event.dts;\n        };\n        CaptionStream$2.prototype.flushCCStreams = function (flushType) {\n            this.ccStreams_.forEach(function (cc) {\n                return flushType === 'flush' ? cc.flush() : cc.partialFlush();\n            }, this);\n        };\n        CaptionStream$2.prototype.flushStream = function (flushType) {\n            // make sure we actually parsed captions before proceeding\n            if (!this.captionPackets_.length) {\n                this.flushCCStreams(flushType);\n                return;\n            } // In Chrome, the Array#sort function is not stable so add a\n            // presortIndex that we can use to ensure we get a stable-sort\n\n            this.captionPackets_.forEach(function (elem, idx) {\n                elem.presortIndex = idx;\n            }); // sort caption byte-pairs based on their PTS values\n\n            this.captionPackets_.sort(function (a, b) {\n                if (a.pts === b.pts) {\n                    return a.presortIndex - b.presortIndex;\n                }\n                return a.pts - b.pts;\n            });\n            this.captionPackets_.forEach(function (packet) {\n                if (packet.type < 2) {\n                    // Dispatch packet to the right Cea608Stream\n                    this.dispatchCea608Packet(packet);\n                } else {\n                    // Dispatch packet to the Cea708Stream\n                    this.dispatchCea708Packet(packet);\n                }\n            }, this);\n            this.captionPackets_.length = 0;\n            this.flushCCStreams(flushType);\n        };\n        CaptionStream$2.prototype.flush = function () {\n            return this.flushStream('flush');\n        }; // Only called if handling partial data\n\n        CaptionStream$2.prototype.partialFlush = function () {\n            return this.flushStream('partialFlush');\n        };\n        CaptionStream$2.prototype.reset = function () {\n            this.latestDts_ = null;\n            this.ignoreNextEqualDts_ = false;\n            this.numSameDts_ = 0;\n            this.activeCea608Channel_ = [null, null];\n            this.ccStreams_.forEach(function (ccStream) {\n                ccStream.reset();\n            });\n        }; // From the CEA-608 spec:\n\n        /*\n     * When XDS sub-packets are interleaved with other services, the end of each sub-packet shall be followed\n     * by a control pair to change to a different service. When any of the control codes from 0x10 to 0x1F is\n     * used to begin a control code pair, it indicates the return to captioning or Text data. The control code pair\n     * and subsequent data should then be processed according to the FCC rules. It may be necessary for the\n     * line 21 data encoder to automatically insert a control code pair (i.e. RCL, RU2, RU3, RU4, RDC, or RTD)\n     * to switch to captioning or Text.\n    */\n        // With that in mind, we ignore any data between an XDS control code and a\n        // subsequent closed-captioning control code.\n\n        CaptionStream$2.prototype.dispatchCea608Packet = function (packet) {\n            // NOTE: packet.type is the CEA608 field\n            if (this.setsTextOrXDSActive(packet)) {\n                this.activeCea608Channel_[packet.type] = null;\n            } else if (this.setsChannel1Active(packet)) {\n                this.activeCea608Channel_[packet.type] = 0;\n            } else if (this.setsChannel2Active(packet)) {\n                this.activeCea608Channel_[packet.type] = 1;\n            }\n            if (this.activeCea608Channel_[packet.type] === null) {\n                // If we haven't received anything to set the active channel, or the\n                // packets are Text/XDS data, discard the data; we don't want jumbled\n                // captions\n                return;\n            }\n            this.ccStreams_[(packet.type << 1) + this.activeCea608Channel_[packet.type]].push(packet);\n        };\n        CaptionStream$2.prototype.setsChannel1Active = function (packet) {\n            return (packet.ccData & 0x7800) === 0x1000;\n        };\n        CaptionStream$2.prototype.setsChannel2Active = function (packet) {\n            return (packet.ccData & 0x7800) === 0x1800;\n        };\n        CaptionStream$2.prototype.setsTextOrXDSActive = function (packet) {\n            return (packet.ccData & 0x7100) === 0x0100 || (packet.ccData & 0x78fe) === 0x102a || (packet.ccData & 0x78fe) === 0x182a;\n        };\n        CaptionStream$2.prototype.dispatchCea708Packet = function (packet) {\n            if (this.parse708captions_) {\n                this.cc708Stream_.push(packet);\n            }\n        }; // ----------------------\n        // Session to Application\n        // ----------------------\n        // This hash maps special and extended character codes to their\n        // proper Unicode equivalent. The first one-byte key is just a\n        // non-standard character code. The two-byte keys that follow are\n        // the extended CEA708 character codes, along with the preceding\n        // 0x10 extended character byte to distinguish these codes from\n        // non-extended character codes. Every CEA708 character code that\n        // is not in this object maps directly to a standard unicode\n        // character code.\n        // The transparent space and non-breaking transparent space are\n        // technically not fully supported since there is no code to\n        // make them transparent, so they have normal non-transparent\n        // stand-ins.\n        // The special closed caption (CC) character isn't a standard\n        // unicode character, so a fairly similar unicode character was\n        // chosen in it's place.\n\n        var CHARACTER_TRANSLATION_708 = {\n            0x7f: 0x266a,\n            // ♪\n            0x1020: 0x20,\n            // Transparent Space\n            0x1021: 0xa0,\n            // Nob-breaking Transparent Space\n            0x1025: 0x2026,\n            // …\n            0x102a: 0x0160,\n            // Š\n            0x102c: 0x0152,\n            // Œ\n            0x1030: 0x2588,\n            // █\n            0x1031: 0x2018,\n            // ‘\n            0x1032: 0x2019,\n            // ’\n            0x1033: 0x201c,\n            // “\n            0x1034: 0x201d,\n            // ”\n            0x1035: 0x2022,\n            // •\n            0x1039: 0x2122,\n            // ™\n            0x103a: 0x0161,\n            // š\n            0x103c: 0x0153,\n            // œ\n            0x103d: 0x2120,\n            // ℠\n            0x103f: 0x0178,\n            // Ÿ\n            0x1076: 0x215b,\n            // ⅛\n            0x1077: 0x215c,\n            // ⅜\n            0x1078: 0x215d,\n            // ⅝\n            0x1079: 0x215e,\n            // ⅞\n            0x107a: 0x23d0,\n            // ⏐\n            0x107b: 0x23a4,\n            // ⎤\n            0x107c: 0x23a3,\n            // ⎣\n            0x107d: 0x23af,\n            // ⎯\n            0x107e: 0x23a6,\n            // ⎦\n            0x107f: 0x23a1,\n            // ⎡\n            0x10a0: 0x3138 // ㄸ (CC char)\n        };\n\n        var get708CharFromCode = function (code) {\n            var newCode = CHARACTER_TRANSLATION_708[code] || code;\n            if (code & 0x1000 && code === newCode) {\n                // Invalid extended code\n                return '';\n            }\n            return String.fromCharCode(newCode);\n        };\n        var within708TextBlock = function (b) {\n            return 0x20 <= b && b <= 0x7f || 0xa0 <= b && b <= 0xff;\n        };\n        var Cea708Window = function (windowNum) {\n            this.windowNum = windowNum;\n            this.reset();\n        };\n        Cea708Window.prototype.reset = function () {\n            this.clearText();\n            this.pendingNewLine = false;\n            this.winAttr = {};\n            this.penAttr = {};\n            this.penLoc = {};\n            this.penColor = {}; // These default values are arbitrary,\n            // defineWindow will usually override them\n\n            this.visible = 0;\n            this.rowLock = 0;\n            this.columnLock = 0;\n            this.priority = 0;\n            this.relativePositioning = 0;\n            this.anchorVertical = 0;\n            this.anchorHorizontal = 0;\n            this.anchorPoint = 0;\n            this.rowCount = 1;\n            this.virtualRowCount = this.rowCount + 1;\n            this.columnCount = 41;\n            this.windowStyle = 0;\n            this.penStyle = 0;\n        };\n        Cea708Window.prototype.getText = function () {\n            return this.rows.join('\\n');\n        };\n        Cea708Window.prototype.clearText = function () {\n            this.rows = [''];\n            this.rowIdx = 0;\n        };\n        Cea708Window.prototype.newLine = function (pts) {\n            if (this.rows.length >= this.virtualRowCount && typeof this.beforeRowOverflow === 'function') {\n                this.beforeRowOverflow(pts);\n            }\n            if (this.rows.length > 0) {\n                this.rows.push('');\n                this.rowIdx++;\n            } // Show all virtual rows since there's no visible scrolling\n\n            while (this.rows.length > this.virtualRowCount) {\n                this.rows.shift();\n                this.rowIdx--;\n            }\n        };\n        Cea708Window.prototype.isEmpty = function () {\n            if (this.rows.length === 0) {\n                return true;\n            } else if (this.rows.length === 1) {\n                return this.rows[0] === '';\n            }\n            return false;\n        };\n        Cea708Window.prototype.addText = function (text) {\n            this.rows[this.rowIdx] += text;\n        };\n        Cea708Window.prototype.backspace = function () {\n            if (!this.isEmpty()) {\n                var row = this.rows[this.rowIdx];\n                this.rows[this.rowIdx] = row.substr(0, row.length - 1);\n            }\n        };\n        var Cea708Service = function (serviceNum, encoding, stream) {\n            this.serviceNum = serviceNum;\n            this.text = '';\n            this.currentWindow = new Cea708Window(-1);\n            this.windows = [];\n            this.stream = stream; // Try to setup a TextDecoder if an `encoding` value was provided\n\n            if (typeof encoding === 'string') {\n                this.createTextDecoder(encoding);\n            }\n        };\n        /**\n         * Initialize service windows\n         * Must be run before service use\n         *\n         * @param  {Integer}  pts               PTS value\n         * @param  {Function} beforeRowOverflow Function to execute before row overflow of a window\n         */\n\n        Cea708Service.prototype.init = function (pts, beforeRowOverflow) {\n            this.startPts = pts;\n            for (var win = 0; win < 8; win++) {\n                this.windows[win] = new Cea708Window(win);\n                if (typeof beforeRowOverflow === 'function') {\n                    this.windows[win].beforeRowOverflow = beforeRowOverflow;\n                }\n            }\n        };\n        /**\n         * Set current window of service to be affected by commands\n         *\n         * @param  {Integer} windowNum Window number\n         */\n\n        Cea708Service.prototype.setCurrentWindow = function (windowNum) {\n            this.currentWindow = this.windows[windowNum];\n        };\n        /**\n         * Try to create a TextDecoder if it is natively supported\n         */\n\n        Cea708Service.prototype.createTextDecoder = function (encoding) {\n            if (typeof TextDecoder === 'undefined') {\n                this.stream.trigger('log', {\n                    level: 'warn',\n                    message: 'The `encoding` option is unsupported without TextDecoder support'\n                });\n            } else {\n                try {\n                    this.textDecoder_ = new TextDecoder(encoding);\n                } catch (error) {\n                    this.stream.trigger('log', {\n                        level: 'warn',\n                        message: 'TextDecoder could not be created with ' + encoding + ' encoding. ' + error\n                    });\n                }\n            }\n        };\n        var Cea708Stream = function (options) {\n            options = options || {};\n            Cea708Stream.prototype.init.call(this);\n            var self = this;\n            var captionServices = options.captionServices || {};\n            var captionServiceEncodings = {};\n            var serviceProps; // Get service encodings from captionServices option block\n\n            Object.keys(captionServices).forEach(serviceName => {\n                serviceProps = captionServices[serviceName];\n                if (/^SERVICE/.test(serviceName)) {\n                    captionServiceEncodings[serviceName] = serviceProps.encoding;\n                }\n            });\n            this.serviceEncodings = captionServiceEncodings;\n            this.current708Packet = null;\n            this.services = {};\n            this.push = function (packet) {\n                if (packet.type === 3) {\n                    // 708 packet start\n                    self.new708Packet();\n                    self.add708Bytes(packet);\n                } else {\n                    if (self.current708Packet === null) {\n                        // This should only happen at the start of a file if there's no packet start.\n                        self.new708Packet();\n                    }\n                    self.add708Bytes(packet);\n                }\n            };\n        };\n        Cea708Stream.prototype = new Stream$7();\n        /**\n         * Push current 708 packet, create new 708 packet.\n         */\n\n        Cea708Stream.prototype.new708Packet = function () {\n            if (this.current708Packet !== null) {\n                this.push708Packet();\n            }\n            this.current708Packet = {\n                data: [],\n                ptsVals: []\n            };\n        };\n        /**\n         * Add pts and both bytes from packet into current 708 packet.\n         */\n\n        Cea708Stream.prototype.add708Bytes = function (packet) {\n            var data = packet.ccData;\n            var byte0 = data >>> 8;\n            var byte1 = data & 0xff; // I would just keep a list of packets instead of bytes, but it isn't clear in the spec\n            // that service blocks will always line up with byte pairs.\n\n            this.current708Packet.ptsVals.push(packet.pts);\n            this.current708Packet.data.push(byte0);\n            this.current708Packet.data.push(byte1);\n        };\n        /**\n         * Parse completed 708 packet into service blocks and push each service block.\n         */\n\n        Cea708Stream.prototype.push708Packet = function () {\n            var packet708 = this.current708Packet;\n            var packetData = packet708.data;\n            var serviceNum = null;\n            var blockSize = null;\n            var i = 0;\n            var b = packetData[i++];\n            packet708.seq = b >> 6;\n            packet708.sizeCode = b & 0x3f; // 0b00111111;\n\n            for (; i < packetData.length; i++) {\n                b = packetData[i++];\n                serviceNum = b >> 5;\n                blockSize = b & 0x1f; // 0b00011111\n\n                if (serviceNum === 7 && blockSize > 0) {\n                    // Extended service num\n                    b = packetData[i++];\n                    serviceNum = b;\n                }\n                this.pushServiceBlock(serviceNum, i, blockSize);\n                if (blockSize > 0) {\n                    i += blockSize - 1;\n                }\n            }\n        };\n        /**\n         * Parse service block, execute commands, read text.\n         *\n         * Note: While many of these commands serve important purposes,\n         * many others just parse out the parameters or attributes, but\n         * nothing is done with them because this is not a full and complete\n         * implementation of the entire 708 spec.\n         *\n         * @param  {Integer} serviceNum Service number\n         * @param  {Integer} start      Start index of the 708 packet data\n         * @param  {Integer} size       Block size\n         */\n\n        Cea708Stream.prototype.pushServiceBlock = function (serviceNum, start, size) {\n            var b;\n            var i = start;\n            var packetData = this.current708Packet.data;\n            var service = this.services[serviceNum];\n            if (!service) {\n                service = this.initService(serviceNum, i);\n            }\n            for (; i < start + size && i < packetData.length; i++) {\n                b = packetData[i];\n                if (within708TextBlock(b)) {\n                    i = this.handleText(i, service);\n                } else if (b === 0x18) {\n                    i = this.multiByteCharacter(i, service);\n                } else if (b === 0x10) {\n                    i = this.extendedCommands(i, service);\n                } else if (0x80 <= b && b <= 0x87) {\n                    i = this.setCurrentWindow(i, service);\n                } else if (0x98 <= b && b <= 0x9f) {\n                    i = this.defineWindow(i, service);\n                } else if (b === 0x88) {\n                    i = this.clearWindows(i, service);\n                } else if (b === 0x8c) {\n                    i = this.deleteWindows(i, service);\n                } else if (b === 0x89) {\n                    i = this.displayWindows(i, service);\n                } else if (b === 0x8a) {\n                    i = this.hideWindows(i, service);\n                } else if (b === 0x8b) {\n                    i = this.toggleWindows(i, service);\n                } else if (b === 0x97) {\n                    i = this.setWindowAttributes(i, service);\n                } else if (b === 0x90) {\n                    i = this.setPenAttributes(i, service);\n                } else if (b === 0x91) {\n                    i = this.setPenColor(i, service);\n                } else if (b === 0x92) {\n                    i = this.setPenLocation(i, service);\n                } else if (b === 0x8f) {\n                    service = this.reset(i, service);\n                } else if (b === 0x08) {\n                    // BS: Backspace\n                    service.currentWindow.backspace();\n                } else if (b === 0x0c) {\n                    // FF: Form feed\n                    service.currentWindow.clearText();\n                } else if (b === 0x0d) {\n                    // CR: Carriage return\n                    service.currentWindow.pendingNewLine = true;\n                } else if (b === 0x0e) {\n                    // HCR: Horizontal carriage return\n                    service.currentWindow.clearText();\n                } else if (b === 0x8d) {\n                    // DLY: Delay, nothing to do\n                    i++;\n                } else ;\n            }\n        };\n        /**\n         * Execute an extended command\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.extendedCommands = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[++i];\n            if (within708TextBlock(b)) {\n                i = this.handleText(i, service, {\n                    isExtended: true\n                });\n            }\n            return i;\n        };\n        /**\n         * Get PTS value of a given byte index\n         *\n         * @param  {Integer} byteIndex  Index of the byte\n         * @return {Integer}            PTS\n         */\n\n        Cea708Stream.prototype.getPts = function (byteIndex) {\n            // There's 1 pts value per 2 bytes\n            return this.current708Packet.ptsVals[Math.floor(byteIndex / 2)];\n        };\n        /**\n         * Initializes a service\n         *\n         * @param  {Integer} serviceNum Service number\n         * @return {Service}            Initialized service object\n         */\n\n        Cea708Stream.prototype.initService = function (serviceNum, i) {\n            var serviceName = 'SERVICE' + serviceNum;\n            var self = this;\n            var serviceName;\n            var encoding;\n            if (serviceName in this.serviceEncodings) {\n                encoding = this.serviceEncodings[serviceName];\n            }\n            this.services[serviceNum] = new Cea708Service(serviceNum, encoding, self);\n            this.services[serviceNum].init(this.getPts(i), function (pts) {\n                self.flushDisplayed(pts, self.services[serviceNum]);\n            });\n            return this.services[serviceNum];\n        };\n        /**\n         * Execute text writing to current window\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.handleText = function (i, service, options) {\n            var isExtended = options && options.isExtended;\n            var isMultiByte = options && options.isMultiByte;\n            var packetData = this.current708Packet.data;\n            var extended = isExtended ? 0x1000 : 0x0000;\n            var currentByte = packetData[i];\n            var nextByte = packetData[i + 1];\n            var win = service.currentWindow;\n            var char;\n            var charCodeArray; // Converts an array of bytes to a unicode hex string.\n\n            function toHexString(byteArray) {\n                return byteArray.map(byte => {\n                    return ('0' + (byte & 0xFF).toString(16)).slice(-2);\n                }).join('');\n            }\n            if (isMultiByte) {\n                charCodeArray = [currentByte, nextByte];\n                i++;\n            } else {\n                charCodeArray = [currentByte];\n            } // Use the TextDecoder if one was created for this service\n\n            if (service.textDecoder_ && !isExtended) {\n                char = service.textDecoder_.decode(new Uint8Array(charCodeArray));\n            } else {\n                // We assume any multi-byte char without a decoder is unicode.\n                if (isMultiByte) {\n                    const unicode = toHexString(charCodeArray); // Takes a unicode hex string and creates a single character.\n\n                    char = String.fromCharCode(parseInt(unicode, 16));\n                } else {\n                    char = get708CharFromCode(extended | currentByte);\n                }\n            }\n            if (win.pendingNewLine && !win.isEmpty()) {\n                win.newLine(this.getPts(i));\n            }\n            win.pendingNewLine = false;\n            win.addText(char);\n            return i;\n        };\n        /**\n         * Handle decoding of multibyte character\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.multiByteCharacter = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var firstByte = packetData[i + 1];\n            var secondByte = packetData[i + 2];\n            if (within708TextBlock(firstByte) && within708TextBlock(secondByte)) {\n                i = this.handleText(++i, service, {\n                    isMultiByte: true\n                });\n            }\n            return i;\n        };\n        /**\n         * Parse and execute the CW# command.\n         *\n         * Set the current window.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.setCurrentWindow = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[i];\n            var windowNum = b & 0x07;\n            service.setCurrentWindow(windowNum);\n            return i;\n        };\n        /**\n         * Parse and execute the DF# command.\n         *\n         * Define a window and set it as the current window.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.defineWindow = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[i];\n            var windowNum = b & 0x07;\n            service.setCurrentWindow(windowNum);\n            var win = service.currentWindow;\n            b = packetData[++i];\n            win.visible = (b & 0x20) >> 5; // v\n\n            win.rowLock = (b & 0x10) >> 4; // rl\n\n            win.columnLock = (b & 0x08) >> 3; // cl\n\n            win.priority = b & 0x07; // p\n\n            b = packetData[++i];\n            win.relativePositioning = (b & 0x80) >> 7; // rp\n\n            win.anchorVertical = b & 0x7f; // av\n\n            b = packetData[++i];\n            win.anchorHorizontal = b; // ah\n\n            b = packetData[++i];\n            win.anchorPoint = (b & 0xf0) >> 4; // ap\n\n            win.rowCount = b & 0x0f; // rc\n\n            b = packetData[++i];\n            win.columnCount = b & 0x3f; // cc\n\n            b = packetData[++i];\n            win.windowStyle = (b & 0x38) >> 3; // ws\n\n            win.penStyle = b & 0x07; // ps\n            // The spec says there are (rowCount+1) \"virtual rows\"\n\n            win.virtualRowCount = win.rowCount + 1;\n            return i;\n        };\n        /**\n         * Parse and execute the SWA command.\n         *\n         * Set attributes of the current window.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.setWindowAttributes = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[i];\n            var winAttr = service.currentWindow.winAttr;\n            b = packetData[++i];\n            winAttr.fillOpacity = (b & 0xc0) >> 6; // fo\n\n            winAttr.fillRed = (b & 0x30) >> 4; // fr\n\n            winAttr.fillGreen = (b & 0x0c) >> 2; // fg\n\n            winAttr.fillBlue = b & 0x03; // fb\n\n            b = packetData[++i];\n            winAttr.borderType = (b & 0xc0) >> 6; // bt\n\n            winAttr.borderRed = (b & 0x30) >> 4; // br\n\n            winAttr.borderGreen = (b & 0x0c) >> 2; // bg\n\n            winAttr.borderBlue = b & 0x03; // bb\n\n            b = packetData[++i];\n            winAttr.borderType += (b & 0x80) >> 5; // bt\n\n            winAttr.wordWrap = (b & 0x40) >> 6; // ww\n\n            winAttr.printDirection = (b & 0x30) >> 4; // pd\n\n            winAttr.scrollDirection = (b & 0x0c) >> 2; // sd\n\n            winAttr.justify = b & 0x03; // j\n\n            b = packetData[++i];\n            winAttr.effectSpeed = (b & 0xf0) >> 4; // es\n\n            winAttr.effectDirection = (b & 0x0c) >> 2; // ed\n\n            winAttr.displayEffect = b & 0x03; // de\n\n            return i;\n        };\n        /**\n         * Gather text from all displayed windows and push a caption to output.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         */\n\n        Cea708Stream.prototype.flushDisplayed = function (pts, service) {\n            var displayedText = []; // TODO: Positioning not supported, displaying multiple windows will not necessarily\n            // display text in the correct order, but sample files so far have not shown any issue.\n\n            for (var winId = 0; winId < 8; winId++) {\n                if (service.windows[winId].visible && !service.windows[winId].isEmpty()) {\n                    displayedText.push(service.windows[winId].getText());\n                }\n            }\n            service.endPts = pts;\n            service.text = displayedText.join('\\n\\n');\n            this.pushCaption(service);\n            service.startPts = pts;\n        };\n        /**\n         * Push a caption to output if the caption contains text.\n         *\n         * @param  {Service} service  The service object to be affected\n         */\n\n        Cea708Stream.prototype.pushCaption = function (service) {\n            if (service.text !== '') {\n                this.trigger('data', {\n                    startPts: service.startPts,\n                    endPts: service.endPts,\n                    text: service.text,\n                    stream: 'cc708_' + service.serviceNum\n                });\n                service.text = '';\n                service.startPts = service.endPts;\n            }\n        };\n        /**\n         * Parse and execute the DSW command.\n         *\n         * Set visible property of windows based on the parsed bitmask.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.displayWindows = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[++i];\n            var pts = this.getPts(i);\n            this.flushDisplayed(pts, service);\n            for (var winId = 0; winId < 8; winId++) {\n                if (b & 0x01 << winId) {\n                    service.windows[winId].visible = 1;\n                }\n            }\n            return i;\n        };\n        /**\n         * Parse and execute the HDW command.\n         *\n         * Set visible property of windows based on the parsed bitmask.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.hideWindows = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[++i];\n            var pts = this.getPts(i);\n            this.flushDisplayed(pts, service);\n            for (var winId = 0; winId < 8; winId++) {\n                if (b & 0x01 << winId) {\n                    service.windows[winId].visible = 0;\n                }\n            }\n            return i;\n        };\n        /**\n         * Parse and execute the TGW command.\n         *\n         * Set visible property of windows based on the parsed bitmask.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.toggleWindows = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[++i];\n            var pts = this.getPts(i);\n            this.flushDisplayed(pts, service);\n            for (var winId = 0; winId < 8; winId++) {\n                if (b & 0x01 << winId) {\n                    service.windows[winId].visible ^= 1;\n                }\n            }\n            return i;\n        };\n        /**\n         * Parse and execute the CLW command.\n         *\n         * Clear text of windows based on the parsed bitmask.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.clearWindows = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[++i];\n            var pts = this.getPts(i);\n            this.flushDisplayed(pts, service);\n            for (var winId = 0; winId < 8; winId++) {\n                if (b & 0x01 << winId) {\n                    service.windows[winId].clearText();\n                }\n            }\n            return i;\n        };\n        /**\n         * Parse and execute the DLW command.\n         *\n         * Re-initialize windows based on the parsed bitmask.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.deleteWindows = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[++i];\n            var pts = this.getPts(i);\n            this.flushDisplayed(pts, service);\n            for (var winId = 0; winId < 8; winId++) {\n                if (b & 0x01 << winId) {\n                    service.windows[winId].reset();\n                }\n            }\n            return i;\n        };\n        /**\n         * Parse and execute the SPA command.\n         *\n         * Set pen attributes of the current window.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.setPenAttributes = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[i];\n            var penAttr = service.currentWindow.penAttr;\n            b = packetData[++i];\n            penAttr.textTag = (b & 0xf0) >> 4; // tt\n\n            penAttr.offset = (b & 0x0c) >> 2; // o\n\n            penAttr.penSize = b & 0x03; // s\n\n            b = packetData[++i];\n            penAttr.italics = (b & 0x80) >> 7; // i\n\n            penAttr.underline = (b & 0x40) >> 6; // u\n\n            penAttr.edgeType = (b & 0x38) >> 3; // et\n\n            penAttr.fontStyle = b & 0x07; // fs\n\n            return i;\n        };\n        /**\n         * Parse and execute the SPC command.\n         *\n         * Set pen color of the current window.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.setPenColor = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[i];\n            var penColor = service.currentWindow.penColor;\n            b = packetData[++i];\n            penColor.fgOpacity = (b & 0xc0) >> 6; // fo\n\n            penColor.fgRed = (b & 0x30) >> 4; // fr\n\n            penColor.fgGreen = (b & 0x0c) >> 2; // fg\n\n            penColor.fgBlue = b & 0x03; // fb\n\n            b = packetData[++i];\n            penColor.bgOpacity = (b & 0xc0) >> 6; // bo\n\n            penColor.bgRed = (b & 0x30) >> 4; // br\n\n            penColor.bgGreen = (b & 0x0c) >> 2; // bg\n\n            penColor.bgBlue = b & 0x03; // bb\n\n            b = packetData[++i];\n            penColor.edgeRed = (b & 0x30) >> 4; // er\n\n            penColor.edgeGreen = (b & 0x0c) >> 2; // eg\n\n            penColor.edgeBlue = b & 0x03; // eb\n\n            return i;\n        };\n        /**\n         * Parse and execute the SPL command.\n         *\n         * Set pen location of the current window.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Integer}          New index after parsing\n         */\n\n        Cea708Stream.prototype.setPenLocation = function (i, service) {\n            var packetData = this.current708Packet.data;\n            var b = packetData[i];\n            var penLoc = service.currentWindow.penLoc; // Positioning isn't really supported at the moment, so this essentially just inserts a linebreak\n\n            service.currentWindow.pendingNewLine = true;\n            b = packetData[++i];\n            penLoc.row = b & 0x0f; // r\n\n            b = packetData[++i];\n            penLoc.column = b & 0x3f; // c\n\n            return i;\n        };\n        /**\n         * Execute the RST command.\n         *\n         * Reset service to a clean slate. Re-initialize.\n         *\n         * @param  {Integer} i        Current index in the 708 packet\n         * @param  {Service} service  The service object to be affected\n         * @return {Service}          Re-initialized service\n         */\n\n        Cea708Stream.prototype.reset = function (i, service) {\n            var pts = this.getPts(i);\n            this.flushDisplayed(pts, service);\n            return this.initService(service.serviceNum, i);\n        }; // This hash maps non-ASCII, special, and extended character codes to their\n        // proper Unicode equivalent. The first keys that are only a single byte\n        // are the non-standard ASCII characters, which simply map the CEA608 byte\n        // to the standard ASCII/Unicode. The two-byte keys that follow are the CEA608\n        // character codes, but have their MSB bitmasked with 0x03 so that a lookup\n        // can be performed regardless of the field and data channel on which the\n        // character code was received.\n\n        var CHARACTER_TRANSLATION = {\n            0x2a: 0xe1,\n            // á\n            0x5c: 0xe9,\n            // é\n            0x5e: 0xed,\n            // í\n            0x5f: 0xf3,\n            // ó\n            0x60: 0xfa,\n            // ú\n            0x7b: 0xe7,\n            // ç\n            0x7c: 0xf7,\n            // ÷\n            0x7d: 0xd1,\n            // Ñ\n            0x7e: 0xf1,\n            // ñ\n            0x7f: 0x2588,\n            // █\n            0x0130: 0xae,\n            // ®\n            0x0131: 0xb0,\n            // °\n            0x0132: 0xbd,\n            // ½\n            0x0133: 0xbf,\n            // ¿\n            0x0134: 0x2122,\n            // ™\n            0x0135: 0xa2,\n            // ¢\n            0x0136: 0xa3,\n            // £\n            0x0137: 0x266a,\n            // ♪\n            0x0138: 0xe0,\n            // à\n            0x0139: 0xa0,\n            //\n            0x013a: 0xe8,\n            // è\n            0x013b: 0xe2,\n            // â\n            0x013c: 0xea,\n            // ê\n            0x013d: 0xee,\n            // î\n            0x013e: 0xf4,\n            // ô\n            0x013f: 0xfb,\n            // û\n            0x0220: 0xc1,\n            // Á\n            0x0221: 0xc9,\n            // É\n            0x0222: 0xd3,\n            // Ó\n            0x0223: 0xda,\n            // Ú\n            0x0224: 0xdc,\n            // Ü\n            0x0225: 0xfc,\n            // ü\n            0x0226: 0x2018,\n            // ‘\n            0x0227: 0xa1,\n            // ¡\n            0x0228: 0x2a,\n            // *\n            0x0229: 0x27,\n            // '\n            0x022a: 0x2014,\n            // —\n            0x022b: 0xa9,\n            // ©\n            0x022c: 0x2120,\n            // ℠\n            0x022d: 0x2022,\n            // •\n            0x022e: 0x201c,\n            // “\n            0x022f: 0x201d,\n            // ”\n            0x0230: 0xc0,\n            // À\n            0x0231: 0xc2,\n            // Â\n            0x0232: 0xc7,\n            // Ç\n            0x0233: 0xc8,\n            // È\n            0x0234: 0xca,\n            // Ê\n            0x0235: 0xcb,\n            // Ë\n            0x0236: 0xeb,\n            // ë\n            0x0237: 0xce,\n            // Î\n            0x0238: 0xcf,\n            // Ï\n            0x0239: 0xef,\n            // ï\n            0x023a: 0xd4,\n            // Ô\n            0x023b: 0xd9,\n            // Ù\n            0x023c: 0xf9,\n            // ù\n            0x023d: 0xdb,\n            // Û\n            0x023e: 0xab,\n            // «\n            0x023f: 0xbb,\n            // »\n            0x0320: 0xc3,\n            // Ã\n            0x0321: 0xe3,\n            // ã\n            0x0322: 0xcd,\n            // Í\n            0x0323: 0xcc,\n            // Ì\n            0x0324: 0xec,\n            // ì\n            0x0325: 0xd2,\n            // Ò\n            0x0326: 0xf2,\n            // ò\n            0x0327: 0xd5,\n            // Õ\n            0x0328: 0xf5,\n            // õ\n            0x0329: 0x7b,\n            // {\n            0x032a: 0x7d,\n            // }\n            0x032b: 0x5c,\n            // \\\n            0x032c: 0x5e,\n            // ^\n            0x032d: 0x5f,\n            // _\n            0x032e: 0x7c,\n            // |\n            0x032f: 0x7e,\n            // ~\n            0x0330: 0xc4,\n            // Ä\n            0x0331: 0xe4,\n            // ä\n            0x0332: 0xd6,\n            // Ö\n            0x0333: 0xf6,\n            // ö\n            0x0334: 0xdf,\n            // ß\n            0x0335: 0xa5,\n            // ¥\n            0x0336: 0xa4,\n            // ¤\n            0x0337: 0x2502,\n            // │\n            0x0338: 0xc5,\n            // Å\n            0x0339: 0xe5,\n            // å\n            0x033a: 0xd8,\n            // Ø\n            0x033b: 0xf8,\n            // ø\n            0x033c: 0x250c,\n            // ┌\n            0x033d: 0x2510,\n            // ┐\n            0x033e: 0x2514,\n            // └\n            0x033f: 0x2518 // ┘\n        };\n\n        var getCharFromCode = function (code) {\n            if (code === null) {\n                return '';\n            }\n            code = CHARACTER_TRANSLATION[code] || code;\n            return String.fromCharCode(code);\n        }; // the index of the last row in a CEA-608 display buffer\n\n        var BOTTOM_ROW = 14; // This array is used for mapping PACs -> row #, since there's no way of\n        // getting it through bit logic.\n\n        var ROWS = [0x1100, 0x1120, 0x1200, 0x1220, 0x1500, 0x1520, 0x1600, 0x1620, 0x1700, 0x1720, 0x1000, 0x1300, 0x1320, 0x1400, 0x1420]; // CEA-608 captions are rendered onto a 34x15 matrix of character\n        // cells. The \"bottom\" row is the last element in the outer array.\n        // We keep track of positioning information as we go by storing the\n        // number of indentations and the tab offset in this buffer.\n\n        var createDisplayBuffer = function () {\n            var result = [],\n                i = BOTTOM_ROW + 1;\n            while (i--) {\n                result.push({\n                    text: '',\n                    indent: 0,\n                    offset: 0\n                });\n            }\n            return result;\n        };\n        var Cea608Stream = function (field, dataChannel) {\n            Cea608Stream.prototype.init.call(this);\n            this.field_ = field || 0;\n            this.dataChannel_ = dataChannel || 0;\n            this.name_ = 'CC' + ((this.field_ << 1 | this.dataChannel_) + 1);\n            this.setConstants();\n            this.reset();\n            this.push = function (packet) {\n                var data, swap, char0, char1, text; // remove the parity bits\n\n                data = packet.ccData & 0x7f7f; // ignore duplicate control codes; the spec demands they're sent twice\n\n                if (data === this.lastControlCode_) {\n                    this.lastControlCode_ = null;\n                    return;\n                } // Store control codes\n\n                if ((data & 0xf000) === 0x1000) {\n                    this.lastControlCode_ = data;\n                } else if (data !== this.PADDING_) {\n                    this.lastControlCode_ = null;\n                }\n                char0 = data >>> 8;\n                char1 = data & 0xff;\n                if (data === this.PADDING_) {\n                    return;\n                } else if (data === this.RESUME_CAPTION_LOADING_) {\n                    this.mode_ = 'popOn';\n                } else if (data === this.END_OF_CAPTION_) {\n                    // If an EOC is received while in paint-on mode, the displayed caption\n                    // text should be swapped to non-displayed memory as if it was a pop-on\n                    // caption. Because of that, we should explicitly switch back to pop-on\n                    // mode\n                    this.mode_ = 'popOn';\n                    this.clearFormatting(packet.pts); // if a caption was being displayed, it's gone now\n\n                    this.flushDisplayed(packet.pts); // flip memory\n\n                    swap = this.displayed_;\n                    this.displayed_ = this.nonDisplayed_;\n                    this.nonDisplayed_ = swap; // start measuring the time to display the caption\n\n                    this.startPts_ = packet.pts;\n                } else if (data === this.ROLL_UP_2_ROWS_) {\n                    this.rollUpRows_ = 2;\n                    this.setRollUp(packet.pts);\n                } else if (data === this.ROLL_UP_3_ROWS_) {\n                    this.rollUpRows_ = 3;\n                    this.setRollUp(packet.pts);\n                } else if (data === this.ROLL_UP_4_ROWS_) {\n                    this.rollUpRows_ = 4;\n                    this.setRollUp(packet.pts);\n                } else if (data === this.CARRIAGE_RETURN_) {\n                    this.clearFormatting(packet.pts);\n                    this.flushDisplayed(packet.pts);\n                    this.shiftRowsUp_();\n                    this.startPts_ = packet.pts;\n                } else if (data === this.BACKSPACE_) {\n                    if (this.mode_ === 'popOn') {\n                        this.nonDisplayed_[this.row_].text = this.nonDisplayed_[this.row_].text.slice(0, -1);\n                    } else {\n                        this.displayed_[this.row_].text = this.displayed_[this.row_].text.slice(0, -1);\n                    }\n                } else if (data === this.ERASE_DISPLAYED_MEMORY_) {\n                    this.flushDisplayed(packet.pts);\n                    this.displayed_ = createDisplayBuffer();\n                } else if (data === this.ERASE_NON_DISPLAYED_MEMORY_) {\n                    this.nonDisplayed_ = createDisplayBuffer();\n                } else if (data === this.RESUME_DIRECT_CAPTIONING_) {\n                    if (this.mode_ !== 'paintOn') {\n                        // NOTE: This should be removed when proper caption positioning is\n                        // implemented\n                        this.flushDisplayed(packet.pts);\n                        this.displayed_ = createDisplayBuffer();\n                    }\n                    this.mode_ = 'paintOn';\n                    this.startPts_ = packet.pts; // Append special characters to caption text\n                } else if (this.isSpecialCharacter(char0, char1)) {\n                    // Bitmask char0 so that we can apply character transformations\n                    // regardless of field and data channel.\n                    // Then byte-shift to the left and OR with char1 so we can pass the\n                    // entire character code to `getCharFromCode`.\n                    char0 = (char0 & 0x03) << 8;\n                    text = getCharFromCode(char0 | char1);\n                    this[this.mode_](packet.pts, text);\n                    this.column_++; // Append extended characters to caption text\n                } else if (this.isExtCharacter(char0, char1)) {\n                    // Extended characters always follow their \"non-extended\" equivalents.\n                    // IE if a \"è\" is desired, you'll always receive \"eè\"; non-compliant\n                    // decoders are supposed to drop the \"è\", while compliant decoders\n                    // backspace the \"e\" and insert \"è\".\n                    // Delete the previous character\n                    if (this.mode_ === 'popOn') {\n                        this.nonDisplayed_[this.row_].text = this.nonDisplayed_[this.row_].text.slice(0, -1);\n                    } else {\n                        this.displayed_[this.row_].text = this.displayed_[this.row_].text.slice(0, -1);\n                    } // Bitmask char0 so that we can apply character transformations\n                    // regardless of field and data channel.\n                    // Then byte-shift to the left and OR with char1 so we can pass the\n                    // entire character code to `getCharFromCode`.\n\n                    char0 = (char0 & 0x03) << 8;\n                    text = getCharFromCode(char0 | char1);\n                    this[this.mode_](packet.pts, text);\n                    this.column_++; // Process mid-row codes\n                } else if (this.isMidRowCode(char0, char1)) {\n                    // Attributes are not additive, so clear all formatting\n                    this.clearFormatting(packet.pts); // According to the standard, mid-row codes\n                    // should be replaced with spaces, so add one now\n\n                    this[this.mode_](packet.pts, ' ');\n                    this.column_++;\n                    if ((char1 & 0xe) === 0xe) {\n                        this.addFormatting(packet.pts, ['i']);\n                    }\n                    if ((char1 & 0x1) === 0x1) {\n                        this.addFormatting(packet.pts, ['u']);\n                    } // Detect offset control codes and adjust cursor\n                } else if (this.isOffsetControlCode(char0, char1)) {\n                    // Cursor position is set by indent PAC (see below) in 4-column\n                    // increments, with an additional offset code of 1-3 to reach any\n                    // of the 32 columns specified by CEA-608. So all we need to do\n                    // here is increment the column cursor by the given offset.\n                    const offset = char1 & 0x03; // For an offest value 1-3, set the offset for that caption\n                    // in the non-displayed array.\n\n                    this.nonDisplayed_[this.row_].offset = offset;\n                    this.column_ += offset; // Detect PACs (Preamble Address Codes)\n                } else if (this.isPAC(char0, char1)) {\n                    // There's no logic for PAC -> row mapping, so we have to just\n                    // find the row code in an array and use its index :(\n                    var row = ROWS.indexOf(data & 0x1f20); // Configure the caption window if we're in roll-up mode\n\n                    if (this.mode_ === 'rollUp') {\n                        // This implies that the base row is incorrectly set.\n                        // As per the recommendation in CEA-608(Base Row Implementation), defer to the number\n                        // of roll-up rows set.\n                        if (row - this.rollUpRows_ + 1 < 0) {\n                            row = this.rollUpRows_ - 1;\n                        }\n                        this.setRollUp(packet.pts, row);\n                    }\n                    if (row !== this.row_) {\n                        // formatting is only persistent for current row\n                        this.clearFormatting(packet.pts);\n                        this.row_ = row;\n                    } // All PACs can apply underline, so detect and apply\n                    // (All odd-numbered second bytes set underline)\n\n                    if (char1 & 0x1 && this.formatting_.indexOf('u') === -1) {\n                        this.addFormatting(packet.pts, ['u']);\n                    }\n                    if ((data & 0x10) === 0x10) {\n                        // We've got an indent level code. Each successive even number\n                        // increments the column cursor by 4, so we can get the desired\n                        // column position by bit-shifting to the right (to get n/2)\n                        // and multiplying by 4.\n                        const indentations = (data & 0xe) >> 1;\n                        this.column_ = indentations * 4; // add to the number of indentations for positioning\n\n                        this.nonDisplayed_[this.row_].indent += indentations;\n                    }\n                    if (this.isColorPAC(char1)) {\n                        // it's a color code, though we only support white, which\n                        // can be either normal or italicized. white italics can be\n                        // either 0x4e or 0x6e depending on the row, so we just\n                        // bitwise-and with 0xe to see if italics should be turned on\n                        if ((char1 & 0xe) === 0xe) {\n                            this.addFormatting(packet.pts, ['i']);\n                        }\n                    } // We have a normal character in char0, and possibly one in char1\n                } else if (this.isNormalChar(char0)) {\n                    if (char1 === 0x00) {\n                        char1 = null;\n                    }\n                    text = getCharFromCode(char0);\n                    text += getCharFromCode(char1);\n                    this[this.mode_](packet.pts, text);\n                    this.column_ += text.length;\n                } // finish data processing\n            };\n        };\n\n        Cea608Stream.prototype = new Stream$7(); // Trigger a cue point that captures the current state of the\n        // display buffer\n\n        Cea608Stream.prototype.flushDisplayed = function (pts) {\n            const logWarning = index => {\n                this.trigger('log', {\n                    level: 'warn',\n                    message: 'Skipping a malformed 608 caption at index ' + index + '.'\n                });\n            };\n            const content = [];\n            this.displayed_.forEach((row, i) => {\n                if (row && row.text && row.text.length) {\n                    try {\n                        // remove spaces from the start and end of the string\n                        row.text = row.text.trim();\n                    } catch (e) {\n                        // Ordinarily, this shouldn't happen. However, caption\n                        // parsing errors should not throw exceptions and\n                        // break playback.\n                        logWarning(i);\n                    } // See the below link for more details on the following fields:\n                    // https://dvcs.w3.org/hg/text-tracks/raw-file/default/608toVTT/608toVTT.html#positioning-in-cea-608\n\n                    if (row.text.length) {\n                        content.push({\n                            // The text to be displayed in the caption from this specific row, with whitespace removed.\n                            text: row.text,\n                            // Value between 1 and 15 representing the PAC row used to calculate line height.\n                            line: i + 1,\n                            // A number representing the indent position by percentage (CEA-608 PAC indent code).\n                            // The value will be a number between 10 and 80. Offset is used to add an aditional\n                            // value to the position if necessary.\n                            position: 10 + Math.min(70, row.indent * 10) + row.offset * 2.5\n                        });\n                    }\n                } else if (row === undefined || row === null) {\n                    logWarning(i);\n                }\n            });\n            if (content.length) {\n                this.trigger('data', {\n                    startPts: this.startPts_,\n                    endPts: pts,\n                    content,\n                    stream: this.name_\n                });\n            }\n        };\n        /**\n         * Zero out the data, used for startup and on seek\n         */\n\n        Cea608Stream.prototype.reset = function () {\n            this.mode_ = 'popOn'; // When in roll-up mode, the index of the last row that will\n            // actually display captions. If a caption is shifted to a row\n            // with a lower index than this, it is cleared from the display\n            // buffer\n\n            this.topRow_ = 0;\n            this.startPts_ = 0;\n            this.displayed_ = createDisplayBuffer();\n            this.nonDisplayed_ = createDisplayBuffer();\n            this.lastControlCode_ = null; // Track row and column for proper line-breaking and spacing\n\n            this.column_ = 0;\n            this.row_ = BOTTOM_ROW;\n            this.rollUpRows_ = 2; // This variable holds currently-applied formatting\n\n            this.formatting_ = [];\n        };\n        /**\n         * Sets up control code and related constants for this instance\n         */\n\n        Cea608Stream.prototype.setConstants = function () {\n            // The following attributes have these uses:\n            // ext_ :    char0 for mid-row codes, and the base for extended\n            //           chars (ext_+0, ext_+1, and ext_+2 are char0s for\n            //           extended codes)\n            // control_: char0 for control codes, except byte-shifted to the\n            //           left so that we can do this.control_ | CONTROL_CODE\n            // offset_:  char0 for tab offset codes\n            //\n            // It's also worth noting that control codes, and _only_ control codes,\n            // differ between field 1 and field2. Field 2 control codes are always\n            // their field 1 value plus 1. That's why there's the \"| field\" on the\n            // control value.\n            if (this.dataChannel_ === 0) {\n                this.BASE_ = 0x10;\n                this.EXT_ = 0x11;\n                this.CONTROL_ = (0x14 | this.field_) << 8;\n                this.OFFSET_ = 0x17;\n            } else if (this.dataChannel_ === 1) {\n                this.BASE_ = 0x18;\n                this.EXT_ = 0x19;\n                this.CONTROL_ = (0x1c | this.field_) << 8;\n                this.OFFSET_ = 0x1f;\n            } // Constants for the LSByte command codes recognized by Cea608Stream. This\n            // list is not exhaustive. For a more comprehensive listing and semantics see\n            // http://www.gpo.gov/fdsys/pkg/CFR-2010-title47-vol1/pdf/CFR-2010-title47-vol1-sec15-119.pdf\n            // Padding\n\n            this.PADDING_ = 0x0000; // Pop-on Mode\n\n            this.RESUME_CAPTION_LOADING_ = this.CONTROL_ | 0x20;\n            this.END_OF_CAPTION_ = this.CONTROL_ | 0x2f; // Roll-up Mode\n\n            this.ROLL_UP_2_ROWS_ = this.CONTROL_ | 0x25;\n            this.ROLL_UP_3_ROWS_ = this.CONTROL_ | 0x26;\n            this.ROLL_UP_4_ROWS_ = this.CONTROL_ | 0x27;\n            this.CARRIAGE_RETURN_ = this.CONTROL_ | 0x2d; // paint-on mode\n\n            this.RESUME_DIRECT_CAPTIONING_ = this.CONTROL_ | 0x29; // Erasure\n\n            this.BACKSPACE_ = this.CONTROL_ | 0x21;\n            this.ERASE_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2c;\n            this.ERASE_NON_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2e;\n        };\n        /**\n         * Detects if the 2-byte packet data is a special character\n         *\n         * Special characters have a second byte in the range 0x30 to 0x3f,\n         * with the first byte being 0x11 (for data channel 1) or 0x19 (for\n         * data channel 2).\n         *\n         * @param  {Integer} char0 The first byte\n         * @param  {Integer} char1 The second byte\n         * @return {Boolean}       Whether the 2 bytes are an special character\n         */\n\n        Cea608Stream.prototype.isSpecialCharacter = function (char0, char1) {\n            return char0 === this.EXT_ && char1 >= 0x30 && char1 <= 0x3f;\n        };\n        /**\n         * Detects if the 2-byte packet data is an extended character\n         *\n         * Extended characters have a second byte in the range 0x20 to 0x3f,\n         * with the first byte being 0x12 or 0x13 (for data channel 1) or\n         * 0x1a or 0x1b (for data channel 2).\n         *\n         * @param  {Integer} char0 The first byte\n         * @param  {Integer} char1 The second byte\n         * @return {Boolean}       Whether the 2 bytes are an extended character\n         */\n\n        Cea608Stream.prototype.isExtCharacter = function (char0, char1) {\n            return (char0 === this.EXT_ + 1 || char0 === this.EXT_ + 2) && char1 >= 0x20 && char1 <= 0x3f;\n        };\n        /**\n         * Detects if the 2-byte packet is a mid-row code\n         *\n         * Mid-row codes have a second byte in the range 0x20 to 0x2f, with\n         * the first byte being 0x11 (for data channel 1) or 0x19 (for data\n         * channel 2).\n         *\n         * @param  {Integer} char0 The first byte\n         * @param  {Integer} char1 The second byte\n         * @return {Boolean}       Whether the 2 bytes are a mid-row code\n         */\n\n        Cea608Stream.prototype.isMidRowCode = function (char0, char1) {\n            return char0 === this.EXT_ && char1 >= 0x20 && char1 <= 0x2f;\n        };\n        /**\n         * Detects if the 2-byte packet is an offset control code\n         *\n         * Offset control codes have a second byte in the range 0x21 to 0x23,\n         * with the first byte being 0x17 (for data channel 1) or 0x1f (for\n         * data channel 2).\n         *\n         * @param  {Integer} char0 The first byte\n         * @param  {Integer} char1 The second byte\n         * @return {Boolean}       Whether the 2 bytes are an offset control code\n         */\n\n        Cea608Stream.prototype.isOffsetControlCode = function (char0, char1) {\n            return char0 === this.OFFSET_ && char1 >= 0x21 && char1 <= 0x23;\n        };\n        /**\n         * Detects if the 2-byte packet is a Preamble Address Code\n         *\n         * PACs have a first byte in the range 0x10 to 0x17 (for data channel 1)\n         * or 0x18 to 0x1f (for data channel 2), with the second byte in the\n         * range 0x40 to 0x7f.\n         *\n         * @param  {Integer} char0 The first byte\n         * @param  {Integer} char1 The second byte\n         * @return {Boolean}       Whether the 2 bytes are a PAC\n         */\n\n        Cea608Stream.prototype.isPAC = function (char0, char1) {\n            return char0 >= this.BASE_ && char0 < this.BASE_ + 8 && char1 >= 0x40 && char1 <= 0x7f;\n        };\n        /**\n         * Detects if a packet's second byte is in the range of a PAC color code\n         *\n         * PAC color codes have the second byte be in the range 0x40 to 0x4f, or\n         * 0x60 to 0x6f.\n         *\n         * @param  {Integer} char1 The second byte\n         * @return {Boolean}       Whether the byte is a color PAC\n         */\n\n        Cea608Stream.prototype.isColorPAC = function (char1) {\n            return char1 >= 0x40 && char1 <= 0x4f || char1 >= 0x60 && char1 <= 0x7f;\n        };\n        /**\n         * Detects if a single byte is in the range of a normal character\n         *\n         * Normal text bytes are in the range 0x20 to 0x7f.\n         *\n         * @param  {Integer} char  The byte\n         * @return {Boolean}       Whether the byte is a normal character\n         */\n\n        Cea608Stream.prototype.isNormalChar = function (char) {\n            return char >= 0x20 && char <= 0x7f;\n        };\n        /**\n         * Configures roll-up\n         *\n         * @param  {Integer} pts         Current PTS\n         * @param  {Integer} newBaseRow  Used by PACs to slide the current window to\n         *                               a new position\n         */\n\n        Cea608Stream.prototype.setRollUp = function (pts, newBaseRow) {\n            // Reset the base row to the bottom row when switching modes\n            if (this.mode_ !== 'rollUp') {\n                this.row_ = BOTTOM_ROW;\n                this.mode_ = 'rollUp'; // Spec says to wipe memories when switching to roll-up\n\n                this.flushDisplayed(pts);\n                this.nonDisplayed_ = createDisplayBuffer();\n                this.displayed_ = createDisplayBuffer();\n            }\n            if (newBaseRow !== undefined && newBaseRow !== this.row_) {\n                // move currently displayed captions (up or down) to the new base row\n                for (var i = 0; i < this.rollUpRows_; i++) {\n                    this.displayed_[newBaseRow - i] = this.displayed_[this.row_ - i];\n                    this.displayed_[this.row_ - i] = {\n                        text: '',\n                        indent: 0,\n                        offset: 0\n                    };\n                }\n            }\n            if (newBaseRow === undefined) {\n                newBaseRow = this.row_;\n            }\n            this.topRow_ = newBaseRow - this.rollUpRows_ + 1;\n        }; // Adds the opening HTML tag for the passed character to the caption text,\n        // and keeps track of it for later closing\n\n        Cea608Stream.prototype.addFormatting = function (pts, format) {\n            this.formatting_ = this.formatting_.concat(format);\n            var text = format.reduce(function (text, format) {\n                return text + '<' + format + '>';\n            }, '');\n            this[this.mode_](pts, text);\n        }; // Adds HTML closing tags for current formatting to caption text and\n        // clears remembered formatting\n\n        Cea608Stream.prototype.clearFormatting = function (pts) {\n            if (!this.formatting_.length) {\n                return;\n            }\n            var text = this.formatting_.reverse().reduce(function (text, format) {\n                return text + '</' + format + '>';\n            }, '');\n            this.formatting_ = [];\n            this[this.mode_](pts, text);\n        }; // Mode Implementations\n\n        Cea608Stream.prototype.popOn = function (pts, text) {\n            var baseRow = this.nonDisplayed_[this.row_].text; // buffer characters\n\n            baseRow += text;\n            this.nonDisplayed_[this.row_].text = baseRow;\n        };\n        Cea608Stream.prototype.rollUp = function (pts, text) {\n            var baseRow = this.displayed_[this.row_].text;\n            baseRow += text;\n            this.displayed_[this.row_].text = baseRow;\n        };\n        Cea608Stream.prototype.shiftRowsUp_ = function () {\n            var i; // clear out inactive rows\n\n            for (i = 0; i < this.topRow_; i++) {\n                this.displayed_[i] = {\n                    text: '',\n                    indent: 0,\n                    offset: 0\n                };\n            }\n            for (i = this.row_ + 1; i < BOTTOM_ROW + 1; i++) {\n                this.displayed_[i] = {\n                    text: '',\n                    indent: 0,\n                    offset: 0\n                };\n            } // shift displayed rows up\n\n            for (i = this.topRow_; i < this.row_; i++) {\n                this.displayed_[i] = this.displayed_[i + 1];\n            } // clear out the bottom row\n\n            this.displayed_[this.row_] = {\n                text: '',\n                indent: 0,\n                offset: 0\n            };\n        };\n        Cea608Stream.prototype.paintOn = function (pts, text) {\n            var baseRow = this.displayed_[this.row_].text;\n            baseRow += text;\n            this.displayed_[this.row_].text = baseRow;\n        }; // exports\n\n        var captionStream = {\n            CaptionStream: CaptionStream$2,\n            Cea608Stream: Cea608Stream,\n            Cea708Stream: Cea708Stream\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n\n        var streamTypes = {\n            H264_STREAM_TYPE: 0x1B,\n            ADTS_STREAM_TYPE: 0x0F,\n            METADATA_STREAM_TYPE: 0x15\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Accepts program elementary stream (PES) data events and corrects\n         * decode and presentation time stamps to account for a rollover\n         * of the 33 bit value.\n         */\n\n        var Stream$6 = stream;\n        var MAX_TS = 8589934592;\n        var RO_THRESH = 4294967296;\n        var TYPE_SHARED = 'shared';\n        var handleRollover$1 = function (value, reference) {\n            var direction = 1;\n            if (value > reference) {\n                // If the current timestamp value is greater than our reference timestamp and we detect a\n                // timestamp rollover, this means the roll over is happening in the opposite direction.\n                // Example scenario: Enter a long stream/video just after a rollover occurred. The reference\n                // point will be set to a small number, e.g. 1. The user then seeks backwards over the\n                // rollover point. In loading this segment, the timestamp values will be very large,\n                // e.g. 2^33 - 1. Since this comes before the data we loaded previously, we want to adjust\n                // the time stamp to be `value - 2^33`.\n                direction = -1;\n            } // Note: A seek forwards or back that is greater than the RO_THRESH (2^32, ~13 hours) will\n            // cause an incorrect adjustment.\n\n            while (Math.abs(reference - value) > RO_THRESH) {\n                value += direction * MAX_TS;\n            }\n            return value;\n        };\n        var TimestampRolloverStream$1 = function (type) {\n            var lastDTS, referenceDTS;\n            TimestampRolloverStream$1.prototype.init.call(this); // The \"shared\" type is used in cases where a stream will contain muxed\n            // video and audio. We could use `undefined` here, but having a string\n            // makes debugging a little clearer.\n\n            this.type_ = type || TYPE_SHARED;\n            this.push = function (data) {\n                /**\n                 * Rollover stream expects data from elementary stream.\n                 * Elementary stream can push forward 2 types of data\n                 * - Parsed Video/Audio/Timed-metadata PES (packetized elementary stream) packets\n                 * - Tracks metadata from PMT (Program Map Table)\n                 * Rollover stream expects pts/dts info to be available, since it stores lastDTS\n                 * We should ignore non-PES packets since they may override lastDTS to undefined.\n                 * lastDTS is important to signal the next segments\n                 * about rollover from the previous segments.\n                 */\n                if (data.type === 'metadata') {\n                    this.trigger('data', data);\n                    return;\n                } // Any \"shared\" rollover streams will accept _all_ data. Otherwise,\n                // streams will only accept data that matches their type.\n\n                if (this.type_ !== TYPE_SHARED && data.type !== this.type_) {\n                    return;\n                }\n                if (referenceDTS === undefined) {\n                    referenceDTS = data.dts;\n                }\n                data.dts = handleRollover$1(data.dts, referenceDTS);\n                data.pts = handleRollover$1(data.pts, referenceDTS);\n                lastDTS = data.dts;\n                this.trigger('data', data);\n            };\n            this.flush = function () {\n                referenceDTS = lastDTS;\n                this.trigger('done');\n            };\n            this.endTimeline = function () {\n                this.flush();\n                this.trigger('endedtimeline');\n            };\n            this.discontinuity = function () {\n                referenceDTS = void 0;\n                lastDTS = void 0;\n            };\n            this.reset = function () {\n                this.discontinuity();\n                this.trigger('reset');\n            };\n        };\n        TimestampRolloverStream$1.prototype = new Stream$6();\n        var timestampRolloverStream = {\n            TimestampRolloverStream: TimestampRolloverStream$1,\n            handleRollover: handleRollover$1\n        }; // Once IE11 support is dropped, this function should be removed.\n\n        var typedArrayIndexOf$1 = (typedArray, element, fromIndex) => {\n            if (!typedArray) {\n                return -1;\n            }\n            var currentIndex = fromIndex;\n            for (; currentIndex < typedArray.length; currentIndex++) {\n                if (typedArray[currentIndex] === element) {\n                    return currentIndex;\n                }\n            }\n            return -1;\n        };\n        var typedArray = {\n            typedArrayIndexOf: typedArrayIndexOf$1\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Tools for parsing ID3 frame data\n         * @see http://id3.org/id3v2.3.0\n         */\n\n        var typedArrayIndexOf = typedArray.typedArrayIndexOf,\n            // Frames that allow different types of text encoding contain a text\n            // encoding description byte [ID3v2.4.0 section 4.]\n            textEncodingDescriptionByte = {\n                Iso88591: 0x00,\n                // ISO-8859-1, terminated with \\0.\n                Utf16: 0x01,\n                // UTF-16 encoded Unicode BOM, terminated with \\0\\0\n                Utf16be: 0x02,\n                // UTF-16BE encoded Unicode, without BOM, terminated with \\0\\0\n                Utf8: 0x03 // UTF-8 encoded Unicode, terminated with \\0\n            },\n            // return a percent-encoded representation of the specified byte range\n            // @see http://en.wikipedia.org/wiki/Percent-encoding\n            percentEncode$1 = function (bytes, start, end) {\n                var i,\n                    result = '';\n                for (i = start; i < end; i++) {\n                    result += '%' + ('00' + bytes[i].toString(16)).slice(-2);\n                }\n                return result;\n            },\n            // return the string representation of the specified byte range,\n            // interpreted as UTf-8.\n            parseUtf8 = function (bytes, start, end) {\n                return decodeURIComponent(percentEncode$1(bytes, start, end));\n            },\n            // return the string representation of the specified byte range,\n            // interpreted as ISO-8859-1.\n            parseIso88591$1 = function (bytes, start, end) {\n                return unescape(percentEncode$1(bytes, start, end)); // jshint ignore:line\n            },\n            parseSyncSafeInteger$1 = function (data) {\n                return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3];\n            },\n            frameParsers = {\n                'APIC': function (frame) {\n                    var i = 1,\n                        mimeTypeEndIndex,\n                        descriptionEndIndex,\n                        LINK_MIME_TYPE = '-->';\n                    if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {\n                        // ignore frames with unrecognized character encodings\n                        return;\n                    } // parsing fields [ID3v2.4.0 section 4.14.]\n\n                    mimeTypeEndIndex = typedArrayIndexOf(frame.data, 0, i);\n                    if (mimeTypeEndIndex < 0) {\n                        // malformed frame\n                        return;\n                    } // parsing Mime type field (terminated with \\0)\n\n                    frame.mimeType = parseIso88591$1(frame.data, i, mimeTypeEndIndex);\n                    i = mimeTypeEndIndex + 1; // parsing 1-byte Picture Type field\n\n                    frame.pictureType = frame.data[i];\n                    i++;\n                    descriptionEndIndex = typedArrayIndexOf(frame.data, 0, i);\n                    if (descriptionEndIndex < 0) {\n                        // malformed frame\n                        return;\n                    } // parsing Description field (terminated with \\0)\n\n                    frame.description = parseUtf8(frame.data, i, descriptionEndIndex);\n                    i = descriptionEndIndex + 1;\n                    if (frame.mimeType === LINK_MIME_TYPE) {\n                        // parsing Picture Data field as URL (always represented as ISO-8859-1 [ID3v2.4.0 section 4.])\n                        frame.url = parseIso88591$1(frame.data, i, frame.data.length);\n                    } else {\n                        // parsing Picture Data field as binary data\n                        frame.pictureData = frame.data.subarray(i, frame.data.length);\n                    }\n                },\n                'T*': function (frame) {\n                    if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {\n                        // ignore frames with unrecognized character encodings\n                        return;\n                    } // parse text field, do not include null terminator in the frame value\n                    // frames that allow different types of encoding contain terminated text [ID3v2.4.0 section 4.]\n\n                    frame.value = parseUtf8(frame.data, 1, frame.data.length).replace(/\\0*$/, ''); // text information frames supports multiple strings, stored as a terminator separated list [ID3v2.4.0 section 4.2.]\n\n                    frame.values = frame.value.split('\\0');\n                },\n                'TXXX': function (frame) {\n                    var descriptionEndIndex;\n                    if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {\n                        // ignore frames with unrecognized character encodings\n                        return;\n                    }\n                    descriptionEndIndex = typedArrayIndexOf(frame.data, 0, 1);\n                    if (descriptionEndIndex === -1) {\n                        return;\n                    } // parse the text fields\n\n                    frame.description = parseUtf8(frame.data, 1, descriptionEndIndex); // do not include the null terminator in the tag value\n                    // frames that allow different types of encoding contain terminated text\n                    // [ID3v2.4.0 section 4.]\n\n                    frame.value = parseUtf8(frame.data, descriptionEndIndex + 1, frame.data.length).replace(/\\0*$/, '');\n                    frame.data = frame.value;\n                },\n                'W*': function (frame) {\n                    // parse URL field; URL fields are always represented as ISO-8859-1 [ID3v2.4.0 section 4.]\n                    // if the value is followed by a string termination all the following information should be ignored [ID3v2.4.0 section 4.3]\n                    frame.url = parseIso88591$1(frame.data, 0, frame.data.length).replace(/\\0.*$/, '');\n                },\n                'WXXX': function (frame) {\n                    var descriptionEndIndex;\n                    if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {\n                        // ignore frames with unrecognized character encodings\n                        return;\n                    }\n                    descriptionEndIndex = typedArrayIndexOf(frame.data, 0, 1);\n                    if (descriptionEndIndex === -1) {\n                        return;\n                    } // parse the description and URL fields\n\n                    frame.description = parseUtf8(frame.data, 1, descriptionEndIndex); // URL fields are always represented as ISO-8859-1 [ID3v2.4.0 section 4.]\n                    // if the value is followed by a string termination all the following information\n                    // should be ignored [ID3v2.4.0 section 4.3]\n\n                    frame.url = parseIso88591$1(frame.data, descriptionEndIndex + 1, frame.data.length).replace(/\\0.*$/, '');\n                },\n                'PRIV': function (frame) {\n                    var i;\n                    for (i = 0; i < frame.data.length; i++) {\n                        if (frame.data[i] === 0) {\n                            // parse the description and URL fields\n                            frame.owner = parseIso88591$1(frame.data, 0, i);\n                            break;\n                        }\n                    }\n                    frame.privateData = frame.data.subarray(i + 1);\n                    frame.data = frame.privateData;\n                }\n            };\n        var parseId3Frames$1 = function (data) {\n            var frameSize,\n                frameHeader,\n                frameStart = 10,\n                tagSize = 0,\n                frames = []; // If we don't have enough data for a header, 10 bytes,\n            // or 'ID3' in the first 3 bytes this is not a valid ID3 tag.\n\n            if (data.length < 10 || data[0] !== 'I'.charCodeAt(0) || data[1] !== 'D'.charCodeAt(0) || data[2] !== '3'.charCodeAt(0)) {\n                return;\n            } // the frame size is transmitted as a 28-bit integer in the\n            // last four bytes of the ID3 header.\n            // The most significant bit of each byte is dropped and the\n            // results concatenated to recover the actual value.\n\n            tagSize = parseSyncSafeInteger$1(data.subarray(6, 10)); // ID3 reports the tag size excluding the header but it's more\n            // convenient for our comparisons to include it\n\n            tagSize += 10; // check bit 6 of byte 5 for the extended header flag.\n\n            var hasExtendedHeader = data[5] & 0x40;\n            if (hasExtendedHeader) {\n                // advance the frame start past the extended header\n                frameStart += 4; // header size field\n\n                frameStart += parseSyncSafeInteger$1(data.subarray(10, 14));\n                tagSize -= parseSyncSafeInteger$1(data.subarray(16, 20)); // clip any padding off the end\n            } // parse one or more ID3 frames\n            // http://id3.org/id3v2.3.0#ID3v2_frame_overview\n\n            do {\n                // determine the number of bytes in this frame\n                frameSize = parseSyncSafeInteger$1(data.subarray(frameStart + 4, frameStart + 8));\n                if (frameSize < 1) {\n                    break;\n                }\n                frameHeader = String.fromCharCode(data[frameStart], data[frameStart + 1], data[frameStart + 2], data[frameStart + 3]);\n                var frame = {\n                    id: frameHeader,\n                    data: data.subarray(frameStart + 10, frameStart + frameSize + 10)\n                };\n                frame.key = frame.id; // parse frame values\n\n                if (frameParsers[frame.id]) {\n                    // use frame specific parser\n                    frameParsers[frame.id](frame);\n                } else if (frame.id[0] === 'T') {\n                    // use text frame generic parser\n                    frameParsers['T*'](frame);\n                } else if (frame.id[0] === 'W') {\n                    // use URL link frame generic parser\n                    frameParsers['W*'](frame);\n                }\n                frames.push(frame);\n                frameStart += 10; // advance past the frame header\n\n                frameStart += frameSize; // advance past the frame body\n            } while (frameStart < tagSize);\n            return frames;\n        };\n        var parseId3 = {\n            parseId3Frames: parseId3Frames$1,\n            parseSyncSafeInteger: parseSyncSafeInteger$1,\n            frameParsers: frameParsers\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Accepts program elementary stream (PES) data events and parses out\n         * ID3 metadata from them, if present.\n         * @see http://id3.org/id3v2.3.0\n         */\n\n        var Stream$5 = stream,\n            StreamTypes$3 = streamTypes,\n            id3 = parseId3,\n            MetadataStream;\n        MetadataStream = function (options) {\n            var settings = {\n                    // the bytes of the program-level descriptor field in MP2T\n                    // see ISO/IEC 13818-1:2013 (E), section 2.6 \"Program and\n                    // program element descriptors\"\n                    descriptor: options && options.descriptor\n                },\n                // the total size in bytes of the ID3 tag being parsed\n                tagSize = 0,\n                // tag data that is not complete enough to be parsed\n                buffer = [],\n                // the total number of bytes currently in the buffer\n                bufferSize = 0,\n                i;\n            MetadataStream.prototype.init.call(this); // calculate the text track in-band metadata track dispatch type\n            // https://html.spec.whatwg.org/multipage/embedded-content.html#steps-to-expose-a-media-resource-specific-text-track\n\n            this.dispatchType = StreamTypes$3.METADATA_STREAM_TYPE.toString(16);\n            if (settings.descriptor) {\n                for (i = 0; i < settings.descriptor.length; i++) {\n                    this.dispatchType += ('00' + settings.descriptor[i].toString(16)).slice(-2);\n                }\n            }\n            this.push = function (chunk) {\n                var tag, frameStart, frameSize, frame, i, frameHeader;\n                if (chunk.type !== 'timed-metadata') {\n                    return;\n                } // if data_alignment_indicator is set in the PES header,\n                // we must have the start of a new ID3 tag. Assume anything\n                // remaining in the buffer was malformed and throw it out\n\n                if (chunk.dataAlignmentIndicator) {\n                    bufferSize = 0;\n                    buffer.length = 0;\n                } // ignore events that don't look like ID3 data\n\n                if (buffer.length === 0 && (chunk.data.length < 10 || chunk.data[0] !== 'I'.charCodeAt(0) || chunk.data[1] !== 'D'.charCodeAt(0) || chunk.data[2] !== '3'.charCodeAt(0))) {\n                    this.trigger('log', {\n                        level: 'warn',\n                        message: 'Skipping unrecognized metadata packet'\n                    });\n                    return;\n                } // add this chunk to the data we've collected so far\n\n                buffer.push(chunk);\n                bufferSize += chunk.data.byteLength; // grab the size of the entire frame from the ID3 header\n\n                if (buffer.length === 1) {\n                    // the frame size is transmitted as a 28-bit integer in the\n                    // last four bytes of the ID3 header.\n                    // The most significant bit of each byte is dropped and the\n                    // results concatenated to recover the actual value.\n                    tagSize = id3.parseSyncSafeInteger(chunk.data.subarray(6, 10)); // ID3 reports the tag size excluding the header but it's more\n                    // convenient for our comparisons to include it\n\n                    tagSize += 10;\n                } // if the entire frame has not arrived, wait for more data\n\n                if (bufferSize < tagSize) {\n                    return;\n                } // collect the entire frame so it can be parsed\n\n                tag = {\n                    data: new Uint8Array(tagSize),\n                    frames: [],\n                    pts: buffer[0].pts,\n                    dts: buffer[0].dts\n                };\n                for (i = 0; i < tagSize;) {\n                    tag.data.set(buffer[0].data.subarray(0, tagSize - i), i);\n                    i += buffer[0].data.byteLength;\n                    bufferSize -= buffer[0].data.byteLength;\n                    buffer.shift();\n                } // find the start of the first frame and the end of the tag\n\n                frameStart = 10;\n                if (tag.data[5] & 0x40) {\n                    // advance the frame start past the extended header\n                    frameStart += 4; // header size field\n\n                    frameStart += id3.parseSyncSafeInteger(tag.data.subarray(10, 14)); // clip any padding off the end\n\n                    tagSize -= id3.parseSyncSafeInteger(tag.data.subarray(16, 20));\n                } // parse one or more ID3 frames\n                // http://id3.org/id3v2.3.0#ID3v2_frame_overview\n\n                do {\n                    // determine the number of bytes in this frame\n                    frameSize = id3.parseSyncSafeInteger(tag.data.subarray(frameStart + 4, frameStart + 8));\n                    if (frameSize < 1) {\n                        this.trigger('log', {\n                            level: 'warn',\n                            message: 'Malformed ID3 frame encountered. Skipping remaining metadata parsing.'\n                        }); // If the frame is malformed, don't parse any further frames but allow previous valid parsed frames\n                        // to be sent along.\n\n                        break;\n                    }\n                    frameHeader = String.fromCharCode(tag.data[frameStart], tag.data[frameStart + 1], tag.data[frameStart + 2], tag.data[frameStart + 3]);\n                    frame = {\n                        id: frameHeader,\n                        data: tag.data.subarray(frameStart + 10, frameStart + frameSize + 10)\n                    };\n                    frame.key = frame.id; // parse frame values\n\n                    if (id3.frameParsers[frame.id]) {\n                        // use frame specific parser\n                        id3.frameParsers[frame.id](frame);\n                    } else if (frame.id[0] === 'T') {\n                        // use text frame generic parser\n                        id3.frameParsers['T*'](frame);\n                    } else if (frame.id[0] === 'W') {\n                        // use URL link frame generic parser\n                        id3.frameParsers['W*'](frame);\n                    } // handle the special PRIV frame used to indicate the start\n                    // time for raw AAC data\n\n                    if (frame.owner === 'com.apple.streaming.transportStreamTimestamp') {\n                        var d = frame.data,\n                            size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2;\n                        size *= 4;\n                        size += d[7] & 0x03;\n                        frame.timeStamp = size; // in raw AAC, all subsequent data will be timestamped based\n                        // on the value of this frame\n                        // we couldn't have known the appropriate pts and dts before\n                        // parsing this ID3 tag so set those values now\n\n                        if (tag.pts === undefined && tag.dts === undefined) {\n                            tag.pts = frame.timeStamp;\n                            tag.dts = frame.timeStamp;\n                        }\n                        this.trigger('timestamp', frame);\n                    }\n                    tag.frames.push(frame);\n                    frameStart += 10; // advance past the frame header\n\n                    frameStart += frameSize; // advance past the frame body\n                } while (frameStart < tagSize);\n                this.trigger('data', tag);\n            };\n        };\n        MetadataStream.prototype = new Stream$5();\n        var metadataStream = MetadataStream;\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * A stream-based mp2t to mp4 converter. This utility can be used to\n         * deliver mp4s to a SourceBuffer on platforms that support native\n         * Media Source Extensions.\n         */\n\n        var Stream$4 = stream,\n            CaptionStream$1 = captionStream,\n            StreamTypes$2 = streamTypes,\n            TimestampRolloverStream = timestampRolloverStream.TimestampRolloverStream; // object types\n\n        var TransportPacketStream, TransportParseStream, ElementaryStream; // constants\n\n        var MP2T_PACKET_LENGTH$1 = 188,\n            // bytes\n            SYNC_BYTE$1 = 0x47;\n        /**\n         * Splits an incoming stream of binary data into MPEG-2 Transport\n         * Stream packets.\n         */\n\n        TransportPacketStream = function () {\n            var buffer = new Uint8Array(MP2T_PACKET_LENGTH$1),\n                bytesInBuffer = 0;\n            TransportPacketStream.prototype.init.call(this); // Deliver new bytes to the stream.\n\n            /**\n             * Split a stream of data into M2TS packets\n             **/\n\n            this.push = function (bytes) {\n                var startIndex = 0,\n                    endIndex = MP2T_PACKET_LENGTH$1,\n                    everything; // If there are bytes remaining from the last segment, prepend them to the\n                // bytes that were pushed in\n\n                if (bytesInBuffer) {\n                    everything = new Uint8Array(bytes.byteLength + bytesInBuffer);\n                    everything.set(buffer.subarray(0, bytesInBuffer));\n                    everything.set(bytes, bytesInBuffer);\n                    bytesInBuffer = 0;\n                } else {\n                    everything = bytes;\n                } // While we have enough data for a packet\n\n                while (endIndex < everything.byteLength) {\n                    // Look for a pair of start and end sync bytes in the data..\n                    if (everything[startIndex] === SYNC_BYTE$1 && everything[endIndex] === SYNC_BYTE$1) {\n                        // We found a packet so emit it and jump one whole packet forward in\n                        // the stream\n                        this.trigger('data', everything.subarray(startIndex, endIndex));\n                        startIndex += MP2T_PACKET_LENGTH$1;\n                        endIndex += MP2T_PACKET_LENGTH$1;\n                        continue;\n                    } // If we get here, we have somehow become de-synchronized and we need to step\n                    // forward one byte at a time until we find a pair of sync bytes that denote\n                    // a packet\n\n                    startIndex++;\n                    endIndex++;\n                } // If there was some data left over at the end of the segment that couldn't\n                // possibly be a whole packet, keep it because it might be the start of a packet\n                // that continues in the next segment\n\n                if (startIndex < everything.byteLength) {\n                    buffer.set(everything.subarray(startIndex), 0);\n                    bytesInBuffer = everything.byteLength - startIndex;\n                }\n            };\n            /**\n             * Passes identified M2TS packets to the TransportParseStream to be parsed\n             **/\n\n            this.flush = function () {\n                // If the buffer contains a whole packet when we are being flushed, emit it\n                // and empty the buffer. Otherwise hold onto the data because it may be\n                // important for decoding the next segment\n                if (bytesInBuffer === MP2T_PACKET_LENGTH$1 && buffer[0] === SYNC_BYTE$1) {\n                    this.trigger('data', buffer);\n                    bytesInBuffer = 0;\n                }\n                this.trigger('done');\n            };\n            this.endTimeline = function () {\n                this.flush();\n                this.trigger('endedtimeline');\n            };\n            this.reset = function () {\n                bytesInBuffer = 0;\n                this.trigger('reset');\n            };\n        };\n        TransportPacketStream.prototype = new Stream$4();\n        /**\n         * Accepts an MP2T TransportPacketStream and emits data events with parsed\n         * forms of the individual transport stream packets.\n         */\n\n        TransportParseStream = function () {\n            var parsePsi, parsePat, parsePmt, self;\n            TransportParseStream.prototype.init.call(this);\n            self = this;\n            this.packetsWaitingForPmt = [];\n            this.programMapTable = undefined;\n            parsePsi = function (payload, psi) {\n                var offset = 0; // PSI packets may be split into multiple sections and those\n                // sections may be split into multiple packets. If a PSI\n                // section starts in this packet, the payload_unit_start_indicator\n                // will be true and the first byte of the payload will indicate\n                // the offset from the current position to the start of the\n                // section.\n\n                if (psi.payloadUnitStartIndicator) {\n                    offset += payload[offset] + 1;\n                }\n                if (psi.type === 'pat') {\n                    parsePat(payload.subarray(offset), psi);\n                } else {\n                    parsePmt(payload.subarray(offset), psi);\n                }\n            };\n            parsePat = function (payload, pat) {\n                pat.section_number = payload[7]; // eslint-disable-line camelcase\n\n                pat.last_section_number = payload[8]; // eslint-disable-line camelcase\n                // skip the PSI header and parse the first PMT entry\n\n                self.pmtPid = (payload[10] & 0x1F) << 8 | payload[11];\n                pat.pmtPid = self.pmtPid;\n            };\n            /**\n             * Parse out the relevant fields of a Program Map Table (PMT).\n             * @param payload {Uint8Array} the PMT-specific portion of an MP2T\n             * packet. The first byte in this array should be the table_id\n             * field.\n             * @param pmt {object} the object that should be decorated with\n             * fields parsed from the PMT.\n             */\n\n            parsePmt = function (payload, pmt) {\n                var sectionLength, tableEnd, programInfoLength, offset; // PMTs can be sent ahead of the time when they should actually\n                // take effect. We don't believe this should ever be the case\n                // for HLS but we'll ignore \"forward\" PMT declarations if we see\n                // them. Future PMT declarations have the current_next_indicator\n                // set to zero.\n\n                if (!(payload[5] & 0x01)) {\n                    return;\n                } // overwrite any existing program map table\n\n                self.programMapTable = {\n                    video: null,\n                    audio: null,\n                    'timed-metadata': {}\n                }; // the mapping table ends at the end of the current section\n\n                sectionLength = (payload[1] & 0x0f) << 8 | payload[2];\n                tableEnd = 3 + sectionLength - 4; // to determine where the table is, we have to figure out how\n                // long the program info descriptors are\n\n                programInfoLength = (payload[10] & 0x0f) << 8 | payload[11]; // advance the offset to the first entry in the mapping table\n\n                offset = 12 + programInfoLength;\n                while (offset < tableEnd) {\n                    var streamType = payload[offset];\n                    var pid = (payload[offset + 1] & 0x1F) << 8 | payload[offset + 2]; // only map a single elementary_pid for audio and video stream types\n                    // TODO: should this be done for metadata too? for now maintain behavior of\n                    //       multiple metadata streams\n\n                    if (streamType === StreamTypes$2.H264_STREAM_TYPE && self.programMapTable.video === null) {\n                        self.programMapTable.video = pid;\n                    } else if (streamType === StreamTypes$2.ADTS_STREAM_TYPE && self.programMapTable.audio === null) {\n                        self.programMapTable.audio = pid;\n                    } else if (streamType === StreamTypes$2.METADATA_STREAM_TYPE) {\n                        // map pid to stream type for metadata streams\n                        self.programMapTable['timed-metadata'][pid] = streamType;\n                    } // move to the next table entry\n                    // skip past the elementary stream descriptors, if present\n\n                    offset += ((payload[offset + 3] & 0x0F) << 8 | payload[offset + 4]) + 5;\n                } // record the map on the packet as well\n\n                pmt.programMapTable = self.programMapTable;\n            };\n            /**\n             * Deliver a new MP2T packet to the next stream in the pipeline.\n             */\n\n            this.push = function (packet) {\n                var result = {},\n                    offset = 4;\n                result.payloadUnitStartIndicator = !!(packet[1] & 0x40); // pid is a 13-bit field starting at the last bit of packet[1]\n\n                result.pid = packet[1] & 0x1f;\n                result.pid <<= 8;\n                result.pid |= packet[2]; // if an adaption field is present, its length is specified by the\n                // fifth byte of the TS packet header. The adaptation field is\n                // used to add stuffing to PES packets that don't fill a complete\n                // TS packet, and to specify some forms of timing and control data\n                // that we do not currently use.\n\n                if ((packet[3] & 0x30) >>> 4 > 0x01) {\n                    offset += packet[offset] + 1;\n                } // parse the rest of the packet based on the type\n\n                if (result.pid === 0) {\n                    result.type = 'pat';\n                    parsePsi(packet.subarray(offset), result);\n                    this.trigger('data', result);\n                } else if (result.pid === this.pmtPid) {\n                    result.type = 'pmt';\n                    parsePsi(packet.subarray(offset), result);\n                    this.trigger('data', result); // if there are any packets waiting for a PMT to be found, process them now\n\n                    while (this.packetsWaitingForPmt.length) {\n                        this.processPes_.apply(this, this.packetsWaitingForPmt.shift());\n                    }\n                } else if (this.programMapTable === undefined) {\n                    // When we have not seen a PMT yet, defer further processing of\n                    // PES packets until one has been parsed\n                    this.packetsWaitingForPmt.push([packet, offset, result]);\n                } else {\n                    this.processPes_(packet, offset, result);\n                }\n            };\n            this.processPes_ = function (packet, offset, result) {\n                // set the appropriate stream type\n                if (result.pid === this.programMapTable.video) {\n                    result.streamType = StreamTypes$2.H264_STREAM_TYPE;\n                } else if (result.pid === this.programMapTable.audio) {\n                    result.streamType = StreamTypes$2.ADTS_STREAM_TYPE;\n                } else {\n                    // if not video or audio, it is timed-metadata or unknown\n                    // if unknown, streamType will be undefined\n                    result.streamType = this.programMapTable['timed-metadata'][result.pid];\n                }\n                result.type = 'pes';\n                result.data = packet.subarray(offset);\n                this.trigger('data', result);\n            };\n        };\n        TransportParseStream.prototype = new Stream$4();\n        TransportParseStream.STREAM_TYPES = {\n            h264: 0x1b,\n            adts: 0x0f\n        };\n        /**\n         * Reconsistutes program elementary stream (PES) packets from parsed\n         * transport stream packets. That is, if you pipe an\n         * mp2t.TransportParseStream into a mp2t.ElementaryStream, the output\n         * events will be events which capture the bytes for individual PES\n         * packets plus relevant metadata that has been extracted from the\n         * container.\n         */\n\n        ElementaryStream = function () {\n            var self = this,\n                segmentHadPmt = false,\n                // PES packet fragments\n                video = {\n                    data: [],\n                    size: 0\n                },\n                audio = {\n                    data: [],\n                    size: 0\n                },\n                timedMetadata = {\n                    data: [],\n                    size: 0\n                },\n                programMapTable,\n                parsePes = function (payload, pes) {\n                    var ptsDtsFlags;\n                    const startPrefix = payload[0] << 16 | payload[1] << 8 | payload[2]; // default to an empty array\n\n                    pes.data = new Uint8Array(); // In certain live streams, the start of a TS fragment has ts packets\n                    // that are frame data that is continuing from the previous fragment. This\n                    // is to check that the pes data is the start of a new pes payload\n\n                    if (startPrefix !== 1) {\n                        return;\n                    } // get the packet length, this will be 0 for video\n\n                    pes.packetLength = 6 + (payload[4] << 8 | payload[5]); // find out if this packets starts a new keyframe\n\n                    pes.dataAlignmentIndicator = (payload[6] & 0x04) !== 0; // PES packets may be annotated with a PTS value, or a PTS value\n                    // and a DTS value. Determine what combination of values is\n                    // available to work with.\n\n                    ptsDtsFlags = payload[7]; // PTS and DTS are normally stored as a 33-bit number.  Javascript\n                    // performs all bitwise operations on 32-bit integers but javascript\n                    // supports a much greater range (52-bits) of integer using standard\n                    // mathematical operations.\n                    // We construct a 31-bit value using bitwise operators over the 31\n                    // most significant bits and then multiply by 4 (equal to a left-shift\n                    // of 2) before we add the final 2 least significant bits of the\n                    // timestamp (equal to an OR.)\n\n                    if (ptsDtsFlags & 0xC0) {\n                        // the PTS and DTS are not written out directly. For information\n                        // on how they are encoded, see\n                        // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html\n                        pes.pts = (payload[9] & 0x0E) << 27 | (payload[10] & 0xFF) << 20 | (payload[11] & 0xFE) << 12 | (payload[12] & 0xFF) << 5 | (payload[13] & 0xFE) >>> 3;\n                        pes.pts *= 4; // Left shift by 2\n\n                        pes.pts += (payload[13] & 0x06) >>> 1; // OR by the two LSBs\n\n                        pes.dts = pes.pts;\n                        if (ptsDtsFlags & 0x40) {\n                            pes.dts = (payload[14] & 0x0E) << 27 | (payload[15] & 0xFF) << 20 | (payload[16] & 0xFE) << 12 | (payload[17] & 0xFF) << 5 | (payload[18] & 0xFE) >>> 3;\n                            pes.dts *= 4; // Left shift by 2\n\n                            pes.dts += (payload[18] & 0x06) >>> 1; // OR by the two LSBs\n                        }\n                    } // the data section starts immediately after the PES header.\n                    // pes_header_data_length specifies the number of header bytes\n                    // that follow the last byte of the field.\n\n                    pes.data = payload.subarray(9 + payload[8]);\n                },\n                /**\n                 * Pass completely parsed PES packets to the next stream in the pipeline\n                 **/\n                flushStream = function (stream, type, forceFlush) {\n                    var packetData = new Uint8Array(stream.size),\n                        event = {\n                            type: type\n                        },\n                        i = 0,\n                        offset = 0,\n                        packetFlushable = false,\n                        fragment; // do nothing if there is not enough buffered data for a complete\n                    // PES header\n\n                    if (!stream.data.length || stream.size < 9) {\n                        return;\n                    }\n                    event.trackId = stream.data[0].pid; // reassemble the packet\n\n                    for (i = 0; i < stream.data.length; i++) {\n                        fragment = stream.data[i];\n                        packetData.set(fragment.data, offset);\n                        offset += fragment.data.byteLength;\n                    } // parse assembled packet's PES header\n\n                    parsePes(packetData, event); // non-video PES packets MUST have a non-zero PES_packet_length\n                    // check that there is enough stream data to fill the packet\n\n                    packetFlushable = type === 'video' || event.packetLength <= stream.size; // flush pending packets if the conditions are right\n\n                    if (forceFlush || packetFlushable) {\n                        stream.size = 0;\n                        stream.data.length = 0;\n                    } // only emit packets that are complete. this is to avoid assembling\n                    // incomplete PES packets due to poor segmentation\n\n                    if (packetFlushable) {\n                        self.trigger('data', event);\n                    }\n                };\n            ElementaryStream.prototype.init.call(this);\n            /**\n             * Identifies M2TS packet types and parses PES packets using metadata\n             * parsed from the PMT\n             **/\n\n            this.push = function (data) {\n                ({\n                    pat: function () {// we have to wait for the PMT to arrive as well before we\n                        // have any meaningful metadata\n                    },\n                    pes: function () {\n                        var stream, streamType;\n                        switch (data.streamType) {\n                            case StreamTypes$2.H264_STREAM_TYPE:\n                                stream = video;\n                                streamType = 'video';\n                                break;\n                            case StreamTypes$2.ADTS_STREAM_TYPE:\n                                stream = audio;\n                                streamType = 'audio';\n                                break;\n                            case StreamTypes$2.METADATA_STREAM_TYPE:\n                                stream = timedMetadata;\n                                streamType = 'timed-metadata';\n                                break;\n                            default:\n                                // ignore unknown stream types\n                                return;\n                        } // if a new packet is starting, we can flush the completed\n                        // packet\n\n                        if (data.payloadUnitStartIndicator) {\n                            flushStream(stream, streamType, true);\n                        } // buffer this fragment until we are sure we've received the\n                        // complete payload\n\n                        stream.data.push(data);\n                        stream.size += data.data.byteLength;\n                    },\n                    pmt: function () {\n                        var event = {\n                            type: 'metadata',\n                            tracks: []\n                        };\n                        programMapTable = data.programMapTable; // translate audio and video streams to tracks\n\n                        if (programMapTable.video !== null) {\n                            event.tracks.push({\n                                timelineStartInfo: {\n                                    baseMediaDecodeTime: 0\n                                },\n                                id: +programMapTable.video,\n                                codec: 'avc',\n                                type: 'video'\n                            });\n                        }\n                        if (programMapTable.audio !== null) {\n                            event.tracks.push({\n                                timelineStartInfo: {\n                                    baseMediaDecodeTime: 0\n                                },\n                                id: +programMapTable.audio,\n                                codec: 'adts',\n                                type: 'audio'\n                            });\n                        }\n                        segmentHadPmt = true;\n                        self.trigger('data', event);\n                    }\n                })[data.type]();\n            };\n            this.reset = function () {\n                video.size = 0;\n                video.data.length = 0;\n                audio.size = 0;\n                audio.data.length = 0;\n                this.trigger('reset');\n            };\n            /**\n             * Flush any remaining input. Video PES packets may be of variable\n             * length. Normally, the start of a new video packet can trigger the\n             * finalization of the previous packet. That is not possible if no\n             * more video is forthcoming, however. In that case, some other\n             * mechanism (like the end of the file) has to be employed. When it is\n             * clear that no additional data is forthcoming, calling this method\n             * will flush the buffered packets.\n             */\n\n            this.flushStreams_ = function () {\n                // !!THIS ORDER IS IMPORTANT!!\n                // video first then audio\n                flushStream(video, 'video');\n                flushStream(audio, 'audio');\n                flushStream(timedMetadata, 'timed-metadata');\n            };\n            this.flush = function () {\n                // if on flush we haven't had a pmt emitted\n                // and we have a pmt to emit. emit the pmt\n                // so that we trigger a trackinfo downstream.\n                if (!segmentHadPmt && programMapTable) {\n                    var pmt = {\n                        type: 'metadata',\n                        tracks: []\n                    }; // translate audio and video streams to tracks\n\n                    if (programMapTable.video !== null) {\n                        pmt.tracks.push({\n                            timelineStartInfo: {\n                                baseMediaDecodeTime: 0\n                            },\n                            id: +programMapTable.video,\n                            codec: 'avc',\n                            type: 'video'\n                        });\n                    }\n                    if (programMapTable.audio !== null) {\n                        pmt.tracks.push({\n                            timelineStartInfo: {\n                                baseMediaDecodeTime: 0\n                            },\n                            id: +programMapTable.audio,\n                            codec: 'adts',\n                            type: 'audio'\n                        });\n                    }\n                    self.trigger('data', pmt);\n                }\n                segmentHadPmt = false;\n                this.flushStreams_();\n                this.trigger('done');\n            };\n        };\n        ElementaryStream.prototype = new Stream$4();\n        var m2ts$1 = {\n            PAT_PID: 0x0000,\n            MP2T_PACKET_LENGTH: MP2T_PACKET_LENGTH$1,\n            TransportPacketStream: TransportPacketStream,\n            TransportParseStream: TransportParseStream,\n            ElementaryStream: ElementaryStream,\n            TimestampRolloverStream: TimestampRolloverStream,\n            CaptionStream: CaptionStream$1.CaptionStream,\n            Cea608Stream: CaptionStream$1.Cea608Stream,\n            Cea708Stream: CaptionStream$1.Cea708Stream,\n            MetadataStream: metadataStream\n        };\n        for (var type in StreamTypes$2) {\n            if (StreamTypes$2.hasOwnProperty(type)) {\n                m2ts$1[type] = StreamTypes$2[type];\n            }\n        }\n        var m2ts_1 = m2ts$1;\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n\n        var Stream$3 = stream;\n        var ONE_SECOND_IN_TS$2 = clock$2.ONE_SECOND_IN_TS;\n        var AdtsStream$1;\n        var ADTS_SAMPLING_FREQUENCIES$1 = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];\n        /*\n     * Accepts a ElementaryStream and emits data events with parsed\n     * AAC Audio Frames of the individual packets. Input audio in ADTS\n     * format is unpacked and re-emitted as AAC frames.\n     *\n     * @see http://wiki.multimedia.cx/index.php?title=ADTS\n     * @see http://wiki.multimedia.cx/?title=Understanding_AAC\n     */\n\n        AdtsStream$1 = function (handlePartialSegments) {\n            var buffer,\n                frameNum = 0;\n            AdtsStream$1.prototype.init.call(this);\n            this.skipWarn_ = function (start, end) {\n                this.trigger('log', {\n                    level: 'warn',\n                    message: `adts skiping bytes ${start} to ${end} in frame ${frameNum} outside syncword`\n                });\n            };\n            this.push = function (packet) {\n                var i = 0,\n                    frameLength,\n                    protectionSkipBytes,\n                    oldBuffer,\n                    sampleCount,\n                    adtsFrameDuration;\n                if (!handlePartialSegments) {\n                    frameNum = 0;\n                }\n                if (packet.type !== 'audio') {\n                    // ignore non-audio data\n                    return;\n                } // Prepend any data in the buffer to the input data so that we can parse\n                // aac frames the cross a PES packet boundary\n\n                if (buffer && buffer.length) {\n                    oldBuffer = buffer;\n                    buffer = new Uint8Array(oldBuffer.byteLength + packet.data.byteLength);\n                    buffer.set(oldBuffer);\n                    buffer.set(packet.data, oldBuffer.byteLength);\n                } else {\n                    buffer = packet.data;\n                } // unpack any ADTS frames which have been fully received\n                // for details on the ADTS header, see http://wiki.multimedia.cx/index.php?title=ADTS\n\n                var skip; // We use i + 7 here because we want to be able to parse the entire header.\n                // If we don't have enough bytes to do that, then we definitely won't have a full frame.\n\n                while (i + 7 < buffer.length) {\n                    // Look for the start of an ADTS header..\n                    if (buffer[i] !== 0xFF || (buffer[i + 1] & 0xF6) !== 0xF0) {\n                        if (typeof skip !== 'number') {\n                            skip = i;\n                        } // If a valid header was not found,  jump one forward and attempt to\n                        // find a valid ADTS header starting at the next byte\n\n                        i++;\n                        continue;\n                    }\n                    if (typeof skip === 'number') {\n                        this.skipWarn_(skip, i);\n                        skip = null;\n                    } // The protection skip bit tells us if we have 2 bytes of CRC data at the\n                    // end of the ADTS header\n\n                    protectionSkipBytes = (~buffer[i + 1] & 0x01) * 2; // Frame length is a 13 bit integer starting 16 bits from the\n                    // end of the sync sequence\n                    // NOTE: frame length includes the size of the header\n\n                    frameLength = (buffer[i + 3] & 0x03) << 11 | buffer[i + 4] << 3 | (buffer[i + 5] & 0xe0) >> 5;\n                    sampleCount = ((buffer[i + 6] & 0x03) + 1) * 1024;\n                    adtsFrameDuration = sampleCount * ONE_SECOND_IN_TS$2 / ADTS_SAMPLING_FREQUENCIES$1[(buffer[i + 2] & 0x3c) >>> 2]; // If we don't have enough data to actually finish this ADTS frame,\n                    // then we have to wait for more data\n\n                    if (buffer.byteLength - i < frameLength) {\n                        break;\n                    } // Otherwise, deliver the complete AAC frame\n\n                    this.trigger('data', {\n                        pts: packet.pts + frameNum * adtsFrameDuration,\n                        dts: packet.dts + frameNum * adtsFrameDuration,\n                        sampleCount: sampleCount,\n                        audioobjecttype: (buffer[i + 2] >>> 6 & 0x03) + 1,\n                        channelcount: (buffer[i + 2] & 1) << 2 | (buffer[i + 3] & 0xc0) >>> 6,\n                        samplerate: ADTS_SAMPLING_FREQUENCIES$1[(buffer[i + 2] & 0x3c) >>> 2],\n                        samplingfrequencyindex: (buffer[i + 2] & 0x3c) >>> 2,\n                        // assume ISO/IEC 14496-12 AudioSampleEntry default of 16\n                        samplesize: 16,\n                        // data is the frame without it's header\n                        data: buffer.subarray(i + 7 + protectionSkipBytes, i + frameLength)\n                    });\n                    frameNum++;\n                    i += frameLength;\n                }\n                if (typeof skip === 'number') {\n                    this.skipWarn_(skip, i);\n                    skip = null;\n                } // remove processed bytes from the buffer.\n\n                buffer = buffer.subarray(i);\n            };\n            this.flush = function () {\n                frameNum = 0;\n                this.trigger('done');\n            };\n            this.reset = function () {\n                buffer = void 0;\n                this.trigger('reset');\n            };\n            this.endTimeline = function () {\n                buffer = void 0;\n                this.trigger('endedtimeline');\n            };\n        };\n        AdtsStream$1.prototype = new Stream$3();\n        var adts = AdtsStream$1;\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n\n        var ExpGolomb$1;\n        /**\n         * Parser for exponential Golomb codes, a variable-bitwidth number encoding\n         * scheme used by h264.\n         */\n\n        ExpGolomb$1 = function (workingData) {\n            var\n                // the number of bytes left to examine in workingData\n                workingBytesAvailable = workingData.byteLength,\n                // the current word being examined\n                workingWord = 0,\n                // :uint\n                // the number of bits left to examine in the current word\n                workingBitsAvailable = 0; // :uint;\n            // ():uint\n\n            this.length = function () {\n                return 8 * workingBytesAvailable;\n            }; // ():uint\n\n            this.bitsAvailable = function () {\n                return 8 * workingBytesAvailable + workingBitsAvailable;\n            }; // ():void\n\n            this.loadWord = function () {\n                var position = workingData.byteLength - workingBytesAvailable,\n                    workingBytes = new Uint8Array(4),\n                    availableBytes = Math.min(4, workingBytesAvailable);\n                if (availableBytes === 0) {\n                    throw new Error('no bytes available');\n                }\n                workingBytes.set(workingData.subarray(position, position + availableBytes));\n                workingWord = new DataView(workingBytes.buffer).getUint32(0); // track the amount of workingData that has been processed\n\n                workingBitsAvailable = availableBytes * 8;\n                workingBytesAvailable -= availableBytes;\n            }; // (count:int):void\n\n            this.skipBits = function (count) {\n                var skipBytes; // :int\n\n                if (workingBitsAvailable > count) {\n                    workingWord <<= count;\n                    workingBitsAvailable -= count;\n                } else {\n                    count -= workingBitsAvailable;\n                    skipBytes = Math.floor(count / 8);\n                    count -= skipBytes * 8;\n                    workingBytesAvailable -= skipBytes;\n                    this.loadWord();\n                    workingWord <<= count;\n                    workingBitsAvailable -= count;\n                }\n            }; // (size:int):uint\n\n            this.readBits = function (size) {\n                var bits = Math.min(workingBitsAvailable, size),\n                    // :uint\n                    valu = workingWord >>> 32 - bits; // :uint\n                // if size > 31, handle error\n\n                workingBitsAvailable -= bits;\n                if (workingBitsAvailable > 0) {\n                    workingWord <<= bits;\n                } else if (workingBytesAvailable > 0) {\n                    this.loadWord();\n                }\n                bits = size - bits;\n                if (bits > 0) {\n                    return valu << bits | this.readBits(bits);\n                }\n                return valu;\n            }; // ():uint\n\n            this.skipLeadingZeros = function () {\n                var leadingZeroCount; // :uint\n\n                for (leadingZeroCount = 0; leadingZeroCount < workingBitsAvailable; ++leadingZeroCount) {\n                    if ((workingWord & 0x80000000 >>> leadingZeroCount) !== 0) {\n                        // the first bit of working word is 1\n                        workingWord <<= leadingZeroCount;\n                        workingBitsAvailable -= leadingZeroCount;\n                        return leadingZeroCount;\n                    }\n                } // we exhausted workingWord and still have not found a 1\n\n                this.loadWord();\n                return leadingZeroCount + this.skipLeadingZeros();\n            }; // ():void\n\n            this.skipUnsignedExpGolomb = function () {\n                this.skipBits(1 + this.skipLeadingZeros());\n            }; // ():void\n\n            this.skipExpGolomb = function () {\n                this.skipBits(1 + this.skipLeadingZeros());\n            }; // ():uint\n\n            this.readUnsignedExpGolomb = function () {\n                var clz = this.skipLeadingZeros(); // :uint\n\n                return this.readBits(clz + 1) - 1;\n            }; // ():int\n\n            this.readExpGolomb = function () {\n                var valu = this.readUnsignedExpGolomb(); // :int\n\n                if (0x01 & valu) {\n                    // the number is odd if the low order bit is set\n                    return 1 + valu >>> 1; // add 1 to make it even, and divide by 2\n                }\n\n                return -1 * (valu >>> 1); // divide by two then make it negative\n            }; // Some convenience functions\n            // :Boolean\n\n            this.readBoolean = function () {\n                return this.readBits(1) === 1;\n            }; // ():int\n\n            this.readUnsignedByte = function () {\n                return this.readBits(8);\n            };\n            this.loadWord();\n        };\n        var expGolomb = ExpGolomb$1;\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n\n        var Stream$2 = stream;\n        var ExpGolomb = expGolomb;\n        var H264Stream$1, NalByteStream;\n        var PROFILES_WITH_OPTIONAL_SPS_DATA;\n        /**\n         * Accepts a NAL unit byte stream and unpacks the embedded NAL units.\n         */\n\n        NalByteStream = function () {\n            var syncPoint = 0,\n                i,\n                buffer;\n            NalByteStream.prototype.init.call(this);\n            /*\n       * Scans a byte stream and triggers a data event with the NAL units found.\n       * @param {Object} data Event received from H264Stream\n       * @param {Uint8Array} data.data The h264 byte stream to be scanned\n       *\n       * @see H264Stream.push\n       */\n\n            this.push = function (data) {\n                var swapBuffer;\n                if (!buffer) {\n                    buffer = data.data;\n                } else {\n                    swapBuffer = new Uint8Array(buffer.byteLength + data.data.byteLength);\n                    swapBuffer.set(buffer);\n                    swapBuffer.set(data.data, buffer.byteLength);\n                    buffer = swapBuffer;\n                }\n                var len = buffer.byteLength; // Rec. ITU-T H.264, Annex B\n                // scan for NAL unit boundaries\n                // a match looks like this:\n                // 0 0 1 .. NAL .. 0 0 1\n                // ^ sync point        ^ i\n                // or this:\n                // 0 0 1 .. NAL .. 0 0 0\n                // ^ sync point        ^ i\n                // advance the sync point to a NAL start, if necessary\n\n                for (; syncPoint < len - 3; syncPoint++) {\n                    if (buffer[syncPoint + 2] === 1) {\n                        // the sync point is properly aligned\n                        i = syncPoint + 5;\n                        break;\n                    }\n                }\n                while (i < len) {\n                    // look at the current byte to determine if we've hit the end of\n                    // a NAL unit boundary\n                    switch (buffer[i]) {\n                        case 0:\n                            // skip past non-sync sequences\n                            if (buffer[i - 1] !== 0) {\n                                i += 2;\n                                break;\n                            } else if (buffer[i - 2] !== 0) {\n                                i++;\n                                break;\n                            } // deliver the NAL unit if it isn't empty\n\n                            if (syncPoint + 3 !== i - 2) {\n                                this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));\n                            } // drop trailing zeroes\n\n                            do {\n                                i++;\n                            } while (buffer[i] !== 1 && i < len);\n                            syncPoint = i - 2;\n                            i += 3;\n                            break;\n                        case 1:\n                            // skip past non-sync sequences\n                            if (buffer[i - 1] !== 0 || buffer[i - 2] !== 0) {\n                                i += 3;\n                                break;\n                            } // deliver the NAL unit\n\n                            this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));\n                            syncPoint = i - 2;\n                            i += 3;\n                            break;\n                        default:\n                            // the current byte isn't a one or zero, so it cannot be part\n                            // of a sync sequence\n                            i += 3;\n                            break;\n                    }\n                } // filter out the NAL units that were delivered\n\n                buffer = buffer.subarray(syncPoint);\n                i -= syncPoint;\n                syncPoint = 0;\n            };\n            this.reset = function () {\n                buffer = null;\n                syncPoint = 0;\n                this.trigger('reset');\n            };\n            this.flush = function () {\n                // deliver the last buffered NAL unit\n                if (buffer && buffer.byteLength > 3) {\n                    this.trigger('data', buffer.subarray(syncPoint + 3));\n                } // reset the stream state\n\n                buffer = null;\n                syncPoint = 0;\n                this.trigger('done');\n            };\n            this.endTimeline = function () {\n                this.flush();\n                this.trigger('endedtimeline');\n            };\n        };\n        NalByteStream.prototype = new Stream$2(); // values of profile_idc that indicate additional fields are included in the SPS\n        // see Recommendation ITU-T H.264 (4/2013),\n        // 7.3.2.1.1 Sequence parameter set data syntax\n\n        PROFILES_WITH_OPTIONAL_SPS_DATA = {\n            100: true,\n            110: true,\n            122: true,\n            244: true,\n            44: true,\n            83: true,\n            86: true,\n            118: true,\n            128: true,\n            // TODO: the three profiles below don't\n            // appear to have sps data in the specificiation anymore?\n            138: true,\n            139: true,\n            134: true\n        };\n        /**\n         * Accepts input from a ElementaryStream and produces H.264 NAL unit data\n         * events.\n         */\n\n        H264Stream$1 = function () {\n            var nalByteStream = new NalByteStream(),\n                self,\n                trackId,\n                currentPts,\n                currentDts,\n                discardEmulationPreventionBytes,\n                readSequenceParameterSet,\n                skipScalingList;\n            H264Stream$1.prototype.init.call(this);\n            self = this;\n            /*\n       * Pushes a packet from a stream onto the NalByteStream\n       *\n       * @param {Object} packet - A packet received from a stream\n       * @param {Uint8Array} packet.data - The raw bytes of the packet\n       * @param {Number} packet.dts - Decode timestamp of the packet\n       * @param {Number} packet.pts - Presentation timestamp of the packet\n       * @param {Number} packet.trackId - The id of the h264 track this packet came from\n       * @param {('video'|'audio')} packet.type - The type of packet\n       *\n       */\n\n            this.push = function (packet) {\n                if (packet.type !== 'video') {\n                    return;\n                }\n                trackId = packet.trackId;\n                currentPts = packet.pts;\n                currentDts = packet.dts;\n                nalByteStream.push(packet);\n            };\n            /*\n       * Identify NAL unit types and pass on the NALU, trackId, presentation and decode timestamps\n       * for the NALUs to the next stream component.\n       * Also, preprocess caption and sequence parameter NALUs.\n       *\n       * @param {Uint8Array} data - A NAL unit identified by `NalByteStream.push`\n       * @see NalByteStream.push\n       */\n\n            nalByteStream.on('data', function (data) {\n                var event = {\n                    trackId: trackId,\n                    pts: currentPts,\n                    dts: currentDts,\n                    data: data,\n                    nalUnitTypeCode: data[0] & 0x1f\n                };\n                switch (event.nalUnitTypeCode) {\n                    case 0x05:\n                        event.nalUnitType = 'slice_layer_without_partitioning_rbsp_idr';\n                        break;\n                    case 0x06:\n                        event.nalUnitType = 'sei_rbsp';\n                        event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));\n                        break;\n                    case 0x07:\n                        event.nalUnitType = 'seq_parameter_set_rbsp';\n                        event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));\n                        event.config = readSequenceParameterSet(event.escapedRBSP);\n                        break;\n                    case 0x08:\n                        event.nalUnitType = 'pic_parameter_set_rbsp';\n                        break;\n                    case 0x09:\n                        event.nalUnitType = 'access_unit_delimiter_rbsp';\n                        break;\n                } // This triggers data on the H264Stream\n\n                self.trigger('data', event);\n            });\n            nalByteStream.on('done', function () {\n                self.trigger('done');\n            });\n            nalByteStream.on('partialdone', function () {\n                self.trigger('partialdone');\n            });\n            nalByteStream.on('reset', function () {\n                self.trigger('reset');\n            });\n            nalByteStream.on('endedtimeline', function () {\n                self.trigger('endedtimeline');\n            });\n            this.flush = function () {\n                nalByteStream.flush();\n            };\n            this.partialFlush = function () {\n                nalByteStream.partialFlush();\n            };\n            this.reset = function () {\n                nalByteStream.reset();\n            };\n            this.endTimeline = function () {\n                nalByteStream.endTimeline();\n            };\n            /**\n             * Advance the ExpGolomb decoder past a scaling list. The scaling\n             * list is optionally transmitted as part of a sequence parameter\n             * set and is not relevant to transmuxing.\n             * @param count {number} the number of entries in this scaling list\n             * @param expGolombDecoder {object} an ExpGolomb pointed to the\n             * start of a scaling list\n             * @see Recommendation ITU-T H.264, Section 7.3.2.1.1.1\n             */\n\n            skipScalingList = function (count, expGolombDecoder) {\n                var lastScale = 8,\n                    nextScale = 8,\n                    j,\n                    deltaScale;\n                for (j = 0; j < count; j++) {\n                    if (nextScale !== 0) {\n                        deltaScale = expGolombDecoder.readExpGolomb();\n                        nextScale = (lastScale + deltaScale + 256) % 256;\n                    }\n                    lastScale = nextScale === 0 ? lastScale : nextScale;\n                }\n            };\n            /**\n             * Expunge any \"Emulation Prevention\" bytes from a \"Raw Byte\n             * Sequence Payload\"\n             * @param data {Uint8Array} the bytes of a RBSP from a NAL\n             * unit\n             * @return {Uint8Array} the RBSP without any Emulation\n             * Prevention Bytes\n             */\n\n            discardEmulationPreventionBytes = function (data) {\n                var length = data.byteLength,\n                    emulationPreventionBytesPositions = [],\n                    i = 1,\n                    newLength,\n                    newData; // Find all `Emulation Prevention Bytes`\n\n                while (i < length - 2) {\n                    if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {\n                        emulationPreventionBytesPositions.push(i + 2);\n                        i += 2;\n                    } else {\n                        i++;\n                    }\n                } // If no Emulation Prevention Bytes were found just return the original\n                // array\n\n                if (emulationPreventionBytesPositions.length === 0) {\n                    return data;\n                } // Create a new array to hold the NAL unit data\n\n                newLength = length - emulationPreventionBytesPositions.length;\n                newData = new Uint8Array(newLength);\n                var sourceIndex = 0;\n                for (i = 0; i < newLength; sourceIndex++, i++) {\n                    if (sourceIndex === emulationPreventionBytesPositions[0]) {\n                        // Skip this byte\n                        sourceIndex++; // Remove this position index\n\n                        emulationPreventionBytesPositions.shift();\n                    }\n                    newData[i] = data[sourceIndex];\n                }\n                return newData;\n            };\n            /**\n             * Read a sequence parameter set and return some interesting video\n             * properties. A sequence parameter set is the H264 metadata that\n             * describes the properties of upcoming video frames.\n             * @param data {Uint8Array} the bytes of a sequence parameter set\n             * @return {object} an object with configuration parsed from the\n             * sequence parameter set, including the dimensions of the\n             * associated video frames.\n             */\n\n            readSequenceParameterSet = function (data) {\n                var frameCropLeftOffset = 0,\n                    frameCropRightOffset = 0,\n                    frameCropTopOffset = 0,\n                    frameCropBottomOffset = 0,\n                    expGolombDecoder,\n                    profileIdc,\n                    levelIdc,\n                    profileCompatibility,\n                    chromaFormatIdc,\n                    picOrderCntType,\n                    numRefFramesInPicOrderCntCycle,\n                    picWidthInMbsMinus1,\n                    picHeightInMapUnitsMinus1,\n                    frameMbsOnlyFlag,\n                    scalingListCount,\n                    sarRatio = [1, 1],\n                    aspectRatioIdc,\n                    i;\n                expGolombDecoder = new ExpGolomb(data);\n                profileIdc = expGolombDecoder.readUnsignedByte(); // profile_idc\n\n                profileCompatibility = expGolombDecoder.readUnsignedByte(); // constraint_set[0-5]_flag\n\n                levelIdc = expGolombDecoder.readUnsignedByte(); // level_idc u(8)\n\n                expGolombDecoder.skipUnsignedExpGolomb(); // seq_parameter_set_id\n                // some profiles have more optional data we don't need\n\n                if (PROFILES_WITH_OPTIONAL_SPS_DATA[profileIdc]) {\n                    chromaFormatIdc = expGolombDecoder.readUnsignedExpGolomb();\n                    if (chromaFormatIdc === 3) {\n                        expGolombDecoder.skipBits(1); // separate_colour_plane_flag\n                    }\n\n                    expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_luma_minus8\n\n                    expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_chroma_minus8\n\n                    expGolombDecoder.skipBits(1); // qpprime_y_zero_transform_bypass_flag\n\n                    if (expGolombDecoder.readBoolean()) {\n                        // seq_scaling_matrix_present_flag\n                        scalingListCount = chromaFormatIdc !== 3 ? 8 : 12;\n                        for (i = 0; i < scalingListCount; i++) {\n                            if (expGolombDecoder.readBoolean()) {\n                                // seq_scaling_list_present_flag[ i ]\n                                if (i < 6) {\n                                    skipScalingList(16, expGolombDecoder);\n                                } else {\n                                    skipScalingList(64, expGolombDecoder);\n                                }\n                            }\n                        }\n                    }\n                }\n                expGolombDecoder.skipUnsignedExpGolomb(); // log2_max_frame_num_minus4\n\n                picOrderCntType = expGolombDecoder.readUnsignedExpGolomb();\n                if (picOrderCntType === 0) {\n                    expGolombDecoder.readUnsignedExpGolomb(); // log2_max_pic_order_cnt_lsb_minus4\n                } else if (picOrderCntType === 1) {\n                    expGolombDecoder.skipBits(1); // delta_pic_order_always_zero_flag\n\n                    expGolombDecoder.skipExpGolomb(); // offset_for_non_ref_pic\n\n                    expGolombDecoder.skipExpGolomb(); // offset_for_top_to_bottom_field\n\n                    numRefFramesInPicOrderCntCycle = expGolombDecoder.readUnsignedExpGolomb();\n                    for (i = 0; i < numRefFramesInPicOrderCntCycle; i++) {\n                        expGolombDecoder.skipExpGolomb(); // offset_for_ref_frame[ i ]\n                    }\n                }\n\n                expGolombDecoder.skipUnsignedExpGolomb(); // max_num_ref_frames\n\n                expGolombDecoder.skipBits(1); // gaps_in_frame_num_value_allowed_flag\n\n                picWidthInMbsMinus1 = expGolombDecoder.readUnsignedExpGolomb();\n                picHeightInMapUnitsMinus1 = expGolombDecoder.readUnsignedExpGolomb();\n                frameMbsOnlyFlag = expGolombDecoder.readBits(1);\n                if (frameMbsOnlyFlag === 0) {\n                    expGolombDecoder.skipBits(1); // mb_adaptive_frame_field_flag\n                }\n\n                expGolombDecoder.skipBits(1); // direct_8x8_inference_flag\n\n                if (expGolombDecoder.readBoolean()) {\n                    // frame_cropping_flag\n                    frameCropLeftOffset = expGolombDecoder.readUnsignedExpGolomb();\n                    frameCropRightOffset = expGolombDecoder.readUnsignedExpGolomb();\n                    frameCropTopOffset = expGolombDecoder.readUnsignedExpGolomb();\n                    frameCropBottomOffset = expGolombDecoder.readUnsignedExpGolomb();\n                }\n                if (expGolombDecoder.readBoolean()) {\n                    // vui_parameters_present_flag\n                    if (expGolombDecoder.readBoolean()) {\n                        // aspect_ratio_info_present_flag\n                        aspectRatioIdc = expGolombDecoder.readUnsignedByte();\n                        switch (aspectRatioIdc) {\n                            case 1:\n                                sarRatio = [1, 1];\n                                break;\n                            case 2:\n                                sarRatio = [12, 11];\n                                break;\n                            case 3:\n                                sarRatio = [10, 11];\n                                break;\n                            case 4:\n                                sarRatio = [16, 11];\n                                break;\n                            case 5:\n                                sarRatio = [40, 33];\n                                break;\n                            case 6:\n                                sarRatio = [24, 11];\n                                break;\n                            case 7:\n                                sarRatio = [20, 11];\n                                break;\n                            case 8:\n                                sarRatio = [32, 11];\n                                break;\n                            case 9:\n                                sarRatio = [80, 33];\n                                break;\n                            case 10:\n                                sarRatio = [18, 11];\n                                break;\n                            case 11:\n                                sarRatio = [15, 11];\n                                break;\n                            case 12:\n                                sarRatio = [64, 33];\n                                break;\n                            case 13:\n                                sarRatio = [160, 99];\n                                break;\n                            case 14:\n                                sarRatio = [4, 3];\n                                break;\n                            case 15:\n                                sarRatio = [3, 2];\n                                break;\n                            case 16:\n                                sarRatio = [2, 1];\n                                break;\n                            case 255:\n                            {\n                                sarRatio = [expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte(), expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte()];\n                                break;\n                            }\n                        }\n                        if (sarRatio) {\n                            sarRatio[0] / sarRatio[1];\n                        }\n                    }\n                }\n                return {\n                    profileIdc: profileIdc,\n                    levelIdc: levelIdc,\n                    profileCompatibility: profileCompatibility,\n                    width: (picWidthInMbsMinus1 + 1) * 16 - frameCropLeftOffset * 2 - frameCropRightOffset * 2,\n                    height: (2 - frameMbsOnlyFlag) * (picHeightInMapUnitsMinus1 + 1) * 16 - frameCropTopOffset * 2 - frameCropBottomOffset * 2,\n                    // sar is sample aspect ratio\n                    sarRatio: sarRatio\n                };\n            };\n        };\n        H264Stream$1.prototype = new Stream$2();\n        var h264 = {\n            H264Stream: H264Stream$1,\n            NalByteStream: NalByteStream\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Utilities to detect basic properties and metadata about Aac data.\n         */\n\n        var ADTS_SAMPLING_FREQUENCIES = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];\n        var parseId3TagSize = function (header, byteIndex) {\n            var returnSize = header[byteIndex + 6] << 21 | header[byteIndex + 7] << 14 | header[byteIndex + 8] << 7 | header[byteIndex + 9],\n                flags = header[byteIndex + 5],\n                footerPresent = (flags & 16) >> 4; // if we get a negative returnSize clamp it to 0\n\n            returnSize = returnSize >= 0 ? returnSize : 0;\n            if (footerPresent) {\n                return returnSize + 20;\n            }\n            return returnSize + 10;\n        };\n        var getId3Offset = function (data, offset) {\n            if (data.length - offset < 10 || data[offset] !== 'I'.charCodeAt(0) || data[offset + 1] !== 'D'.charCodeAt(0) || data[offset + 2] !== '3'.charCodeAt(0)) {\n                return offset;\n            }\n            offset += parseId3TagSize(data, offset);\n            return getId3Offset(data, offset);\n        }; // TODO: use vhs-utils\n\n        var isLikelyAacData$1 = function (data) {\n            var offset = getId3Offset(data, 0);\n            return data.length >= offset + 2 && (data[offset] & 0xFF) === 0xFF && (data[offset + 1] & 0xF0) === 0xF0 &&\n                // verify that the 2 layer bits are 0, aka this\n                // is not mp3 data but aac data.\n                (data[offset + 1] & 0x16) === 0x10;\n        };\n        var parseSyncSafeInteger = function (data) {\n            return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3];\n        }; // return a percent-encoded representation of the specified byte range\n        // @see http://en.wikipedia.org/wiki/Percent-encoding\n\n        var percentEncode = function (bytes, start, end) {\n            var i,\n                result = '';\n            for (i = start; i < end; i++) {\n                result += '%' + ('00' + bytes[i].toString(16)).slice(-2);\n            }\n            return result;\n        }; // return the string representation of the specified byte range,\n        // interpreted as ISO-8859-1.\n\n        var parseIso88591 = function (bytes, start, end) {\n            return unescape(percentEncode(bytes, start, end)); // jshint ignore:line\n        };\n\n        var parseAdtsSize = function (header, byteIndex) {\n            var lowThree = (header[byteIndex + 5] & 0xE0) >> 5,\n                middle = header[byteIndex + 4] << 3,\n                highTwo = header[byteIndex + 3] & 0x3 << 11;\n            return highTwo | middle | lowThree;\n        };\n        var parseType$4 = function (header, byteIndex) {\n            if (header[byteIndex] === 'I'.charCodeAt(0) && header[byteIndex + 1] === 'D'.charCodeAt(0) && header[byteIndex + 2] === '3'.charCodeAt(0)) {\n                return 'timed-metadata';\n            } else if (header[byteIndex] & 0xff === 0xff && (header[byteIndex + 1] & 0xf0) === 0xf0) {\n                return 'audio';\n            }\n            return null;\n        };\n        var parseSampleRate = function (packet) {\n            var i = 0;\n            while (i + 5 < packet.length) {\n                if (packet[i] !== 0xFF || (packet[i + 1] & 0xF6) !== 0xF0) {\n                    // If a valid header was not found,  jump one forward and attempt to\n                    // find a valid ADTS header starting at the next byte\n                    i++;\n                    continue;\n                }\n                return ADTS_SAMPLING_FREQUENCIES[(packet[i + 2] & 0x3c) >>> 2];\n            }\n            return null;\n        };\n        var parseAacTimestamp = function (packet) {\n            var frameStart, frameSize, frame, frameHeader; // find the start of the first frame and the end of the tag\n\n            frameStart = 10;\n            if (packet[5] & 0x40) {\n                // advance the frame start past the extended header\n                frameStart += 4; // header size field\n\n                frameStart += parseSyncSafeInteger(packet.subarray(10, 14));\n            } // parse one or more ID3 frames\n            // http://id3.org/id3v2.3.0#ID3v2_frame_overview\n\n            do {\n                // determine the number of bytes in this frame\n                frameSize = parseSyncSafeInteger(packet.subarray(frameStart + 4, frameStart + 8));\n                if (frameSize < 1) {\n                    return null;\n                }\n                frameHeader = String.fromCharCode(packet[frameStart], packet[frameStart + 1], packet[frameStart + 2], packet[frameStart + 3]);\n                if (frameHeader === 'PRIV') {\n                    frame = packet.subarray(frameStart + 10, frameStart + frameSize + 10);\n                    for (var i = 0; i < frame.byteLength; i++) {\n                        if (frame[i] === 0) {\n                            var owner = parseIso88591(frame, 0, i);\n                            if (owner === 'com.apple.streaming.transportStreamTimestamp') {\n                                var d = frame.subarray(i + 1);\n                                var size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2;\n                                size *= 4;\n                                size += d[7] & 0x03;\n                                return size;\n                            }\n                            break;\n                        }\n                    }\n                }\n                frameStart += 10; // advance past the frame header\n\n                frameStart += frameSize; // advance past the frame body\n            } while (frameStart < packet.byteLength);\n            return null;\n        };\n        var utils = {\n            isLikelyAacData: isLikelyAacData$1,\n            parseId3TagSize: parseId3TagSize,\n            parseAdtsSize: parseAdtsSize,\n            parseType: parseType$4,\n            parseSampleRate: parseSampleRate,\n            parseAacTimestamp: parseAacTimestamp\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * A stream-based aac to mp4 converter. This utility can be used to\n         * deliver mp4s to a SourceBuffer on platforms that support native\n         * Media Source Extensions.\n         */\n\n        var Stream$1 = stream;\n        var aacUtils = utils; // Constants\n\n        var AacStream$1;\n        /**\n         * Splits an incoming stream of binary data into ADTS and ID3 Frames.\n         */\n\n        AacStream$1 = function () {\n            var everything = new Uint8Array(),\n                timeStamp = 0;\n            AacStream$1.prototype.init.call(this);\n            this.setTimestamp = function (timestamp) {\n                timeStamp = timestamp;\n            };\n            this.push = function (bytes) {\n                var frameSize = 0,\n                    byteIndex = 0,\n                    bytesLeft,\n                    chunk,\n                    packet,\n                    tempLength; // If there are bytes remaining from the last segment, prepend them to the\n                // bytes that were pushed in\n\n                if (everything.length) {\n                    tempLength = everything.length;\n                    everything = new Uint8Array(bytes.byteLength + tempLength);\n                    everything.set(everything.subarray(0, tempLength));\n                    everything.set(bytes, tempLength);\n                } else {\n                    everything = bytes;\n                }\n                while (everything.length - byteIndex >= 3) {\n                    if (everything[byteIndex] === 'I'.charCodeAt(0) && everything[byteIndex + 1] === 'D'.charCodeAt(0) && everything[byteIndex + 2] === '3'.charCodeAt(0)) {\n                        // Exit early because we don't have enough to parse\n                        // the ID3 tag header\n                        if (everything.length - byteIndex < 10) {\n                            break;\n                        } // check framesize\n\n                        frameSize = aacUtils.parseId3TagSize(everything, byteIndex); // Exit early if we don't have enough in the buffer\n                        // to emit a full packet\n                        // Add to byteIndex to support multiple ID3 tags in sequence\n\n                        if (byteIndex + frameSize > everything.length) {\n                            break;\n                        }\n                        chunk = {\n                            type: 'timed-metadata',\n                            data: everything.subarray(byteIndex, byteIndex + frameSize)\n                        };\n                        this.trigger('data', chunk);\n                        byteIndex += frameSize;\n                        continue;\n                    } else if ((everything[byteIndex] & 0xff) === 0xff && (everything[byteIndex + 1] & 0xf0) === 0xf0) {\n                        // Exit early because we don't have enough to parse\n                        // the ADTS frame header\n                        if (everything.length - byteIndex < 7) {\n                            break;\n                        }\n                        frameSize = aacUtils.parseAdtsSize(everything, byteIndex); // Exit early if we don't have enough in the buffer\n                        // to emit a full packet\n\n                        if (byteIndex + frameSize > everything.length) {\n                            break;\n                        }\n                        packet = {\n                            type: 'audio',\n                            data: everything.subarray(byteIndex, byteIndex + frameSize),\n                            pts: timeStamp,\n                            dts: timeStamp\n                        };\n                        this.trigger('data', packet);\n                        byteIndex += frameSize;\n                        continue;\n                    }\n                    byteIndex++;\n                }\n                bytesLeft = everything.length - byteIndex;\n                if (bytesLeft > 0) {\n                    everything = everything.subarray(byteIndex);\n                } else {\n                    everything = new Uint8Array();\n                }\n            };\n            this.reset = function () {\n                everything = new Uint8Array();\n                this.trigger('reset');\n            };\n            this.endTimeline = function () {\n                everything = new Uint8Array();\n                this.trigger('endedtimeline');\n            };\n        };\n        AacStream$1.prototype = new Stream$1();\n        var aac = AacStream$1;\n        var AUDIO_PROPERTIES$1 = ['audioobjecttype', 'channelcount', 'samplerate', 'samplingfrequencyindex', 'samplesize'];\n        var audioProperties = AUDIO_PROPERTIES$1;\n        var VIDEO_PROPERTIES$1 = ['width', 'height', 'profileIdc', 'levelIdc', 'profileCompatibility', 'sarRatio'];\n        var videoProperties = VIDEO_PROPERTIES$1;\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * A stream-based mp2t to mp4 converter. This utility can be used to\n         * deliver mp4s to a SourceBuffer on platforms that support native\n         * Media Source Extensions.\n         */\n\n        var Stream = stream;\n        var mp4 = mp4Generator;\n        var frameUtils = frameUtils$1;\n        var audioFrameUtils = audioFrameUtils$1;\n        var trackDecodeInfo = trackDecodeInfo$1;\n        var m2ts = m2ts_1;\n        var clock = clock$2;\n        var AdtsStream = adts;\n        var H264Stream = h264.H264Stream;\n        var AacStream = aac;\n        var isLikelyAacData = utils.isLikelyAacData;\n        var ONE_SECOND_IN_TS$1 = clock$2.ONE_SECOND_IN_TS;\n        var AUDIO_PROPERTIES = audioProperties;\n        var VIDEO_PROPERTIES = videoProperties; // object types\n\n        var VideoSegmentStream, AudioSegmentStream, Transmuxer, CoalesceStream;\n        var retriggerForStream = function (key, event) {\n            event.stream = key;\n            this.trigger('log', event);\n        };\n        var addPipelineLogRetriggers = function (transmuxer, pipeline) {\n            var keys = Object.keys(pipeline);\n            for (var i = 0; i < keys.length; i++) {\n                var key = keys[i]; // skip non-stream keys and headOfPipeline\n                // which is just a duplicate\n\n                if (key === 'headOfPipeline' || !pipeline[key].on) {\n                    continue;\n                }\n                pipeline[key].on('log', retriggerForStream.bind(transmuxer, key));\n            }\n        };\n        /**\n         * Compare two arrays (even typed) for same-ness\n         */\n\n        var arrayEquals = function (a, b) {\n            var i;\n            if (a.length !== b.length) {\n                return false;\n            } // compare the value of each element in the array\n\n            for (i = 0; i < a.length; i++) {\n                if (a[i] !== b[i]) {\n                    return false;\n                }\n            }\n            return true;\n        };\n        var generateSegmentTimingInfo = function (baseMediaDecodeTime, startDts, startPts, endDts, endPts, prependedContentDuration) {\n            var ptsOffsetFromDts = startPts - startDts,\n                decodeDuration = endDts - startDts,\n                presentationDuration = endPts - startPts; // The PTS and DTS values are based on the actual stream times from the segment,\n            // however, the player time values will reflect a start from the baseMediaDecodeTime.\n            // In order to provide relevant values for the player times, base timing info on the\n            // baseMediaDecodeTime and the DTS and PTS durations of the segment.\n\n            return {\n                start: {\n                    dts: baseMediaDecodeTime,\n                    pts: baseMediaDecodeTime + ptsOffsetFromDts\n                },\n                end: {\n                    dts: baseMediaDecodeTime + decodeDuration,\n                    pts: baseMediaDecodeTime + presentationDuration\n                },\n                prependedContentDuration: prependedContentDuration,\n                baseMediaDecodeTime: baseMediaDecodeTime\n            };\n        };\n        /**\n         * Constructs a single-track, ISO BMFF media segment from AAC data\n         * events. The output of this stream can be fed to a SourceBuffer\n         * configured with a suitable initialization segment.\n         * @param track {object} track metadata configuration\n         * @param options {object} transmuxer options object\n         * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n         *        in the source; false to adjust the first segment to start at 0.\n         */\n\n        AudioSegmentStream = function (track, options) {\n            var adtsFrames = [],\n                sequenceNumber,\n                earliestAllowedDts = 0,\n                audioAppendStartTs = 0,\n                videoBaseMediaDecodeTime = Infinity;\n            options = options || {};\n            sequenceNumber = options.firstSequenceNumber || 0;\n            AudioSegmentStream.prototype.init.call(this);\n            this.push = function (data) {\n                trackDecodeInfo.collectDtsInfo(track, data);\n                if (track) {\n                    AUDIO_PROPERTIES.forEach(function (prop) {\n                        track[prop] = data[prop];\n                    });\n                } // buffer audio data until end() is called\n\n                adtsFrames.push(data);\n            };\n            this.setEarliestDts = function (earliestDts) {\n                earliestAllowedDts = earliestDts;\n            };\n            this.setVideoBaseMediaDecodeTime = function (baseMediaDecodeTime) {\n                videoBaseMediaDecodeTime = baseMediaDecodeTime;\n            };\n            this.setAudioAppendStart = function (timestamp) {\n                audioAppendStartTs = timestamp;\n            };\n            this.flush = function () {\n                var frames, moof, mdat, boxes, frameDuration, segmentDuration, videoClockCyclesOfSilencePrefixed; // return early if no audio data has been observed\n\n                if (adtsFrames.length === 0) {\n                    this.trigger('done', 'AudioSegmentStream');\n                    return;\n                }\n                frames = audioFrameUtils.trimAdtsFramesByEarliestDts(adtsFrames, track, earliestAllowedDts);\n                track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps); // amount of audio filled but the value is in video clock rather than audio clock\n\n                videoClockCyclesOfSilencePrefixed = audioFrameUtils.prefixWithSilence(track, frames, audioAppendStartTs, videoBaseMediaDecodeTime); // we have to build the index from byte locations to\n                // samples (that is, adts frames) in the audio data\n\n                track.samples = audioFrameUtils.generateSampleTable(frames); // concatenate the audio data to constuct the mdat\n\n                mdat = mp4.mdat(audioFrameUtils.concatenateFrameData(frames));\n                adtsFrames = [];\n                moof = mp4.moof(sequenceNumber, [track]);\n                boxes = new Uint8Array(moof.byteLength + mdat.byteLength); // bump the sequence number for next time\n\n                sequenceNumber++;\n                boxes.set(moof);\n                boxes.set(mdat, moof.byteLength);\n                trackDecodeInfo.clearDtsInfo(track);\n                frameDuration = Math.ceil(ONE_SECOND_IN_TS$1 * 1024 / track.samplerate); // TODO this check was added to maintain backwards compatibility (particularly with\n                // tests) on adding the timingInfo event. However, it seems unlikely that there's a\n                // valid use-case where an init segment/data should be triggered without associated\n                // frames. Leaving for now, but should be looked into.\n\n                if (frames.length) {\n                    segmentDuration = frames.length * frameDuration;\n                    this.trigger('segmentTimingInfo', generateSegmentTimingInfo(\n                        // The audio track's baseMediaDecodeTime is in audio clock cycles, but the\n                        // frame info is in video clock cycles. Convert to match expectation of\n                        // listeners (that all timestamps will be based on video clock cycles).\n                        clock.audioTsToVideoTs(track.baseMediaDecodeTime, track.samplerate),\n                        // frame times are already in video clock, as is segment duration\n                        frames[0].dts, frames[0].pts, frames[0].dts + segmentDuration, frames[0].pts + segmentDuration, videoClockCyclesOfSilencePrefixed || 0));\n                    this.trigger('timingInfo', {\n                        start: frames[0].pts,\n                        end: frames[0].pts + segmentDuration\n                    });\n                }\n                this.trigger('data', {\n                    track: track,\n                    boxes: boxes\n                });\n                this.trigger('done', 'AudioSegmentStream');\n            };\n            this.reset = function () {\n                trackDecodeInfo.clearDtsInfo(track);\n                adtsFrames = [];\n                this.trigger('reset');\n            };\n        };\n        AudioSegmentStream.prototype = new Stream();\n        /**\n         * Constructs a single-track, ISO BMFF media segment from H264 data\n         * events. The output of this stream can be fed to a SourceBuffer\n         * configured with a suitable initialization segment.\n         * @param track {object} track metadata configuration\n         * @param options {object} transmuxer options object\n         * @param options.alignGopsAtEnd {boolean} If true, start from the end of the\n         *        gopsToAlignWith list when attempting to align gop pts\n         * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n         *        in the source; false to adjust the first segment to start at 0.\n         */\n\n        VideoSegmentStream = function (track, options) {\n            var sequenceNumber,\n                nalUnits = [],\n                gopsToAlignWith = [],\n                config,\n                pps;\n            options = options || {};\n            sequenceNumber = options.firstSequenceNumber || 0;\n            VideoSegmentStream.prototype.init.call(this);\n            delete track.minPTS;\n            this.gopCache_ = [];\n            /**\n             * Constructs a ISO BMFF segment given H264 nalUnits\n             * @param {Object} nalUnit A data event representing a nalUnit\n             * @param {String} nalUnit.nalUnitType\n             * @param {Object} nalUnit.config Properties for a mp4 track\n             * @param {Uint8Array} nalUnit.data The nalUnit bytes\n             * @see lib/codecs/h264.js\n             **/\n\n            this.push = function (nalUnit) {\n                trackDecodeInfo.collectDtsInfo(track, nalUnit); // record the track config\n\n                if (nalUnit.nalUnitType === 'seq_parameter_set_rbsp' && !config) {\n                    config = nalUnit.config;\n                    track.sps = [nalUnit.data];\n                    VIDEO_PROPERTIES.forEach(function (prop) {\n                        track[prop] = config[prop];\n                    }, this);\n                }\n                if (nalUnit.nalUnitType === 'pic_parameter_set_rbsp' && !pps) {\n                    pps = nalUnit.data;\n                    track.pps = [nalUnit.data];\n                } // buffer video until flush() is called\n\n                nalUnits.push(nalUnit);\n            };\n            /**\n             * Pass constructed ISO BMFF track and boxes on to the\n             * next stream in the pipeline\n             **/\n\n            this.flush = function () {\n                var frames,\n                    gopForFusion,\n                    gops,\n                    moof,\n                    mdat,\n                    boxes,\n                    prependedContentDuration = 0,\n                    firstGop,\n                    lastGop; // Throw away nalUnits at the start of the byte stream until\n                // we find the first AUD\n\n                while (nalUnits.length) {\n                    if (nalUnits[0].nalUnitType === 'access_unit_delimiter_rbsp') {\n                        break;\n                    }\n                    nalUnits.shift();\n                } // Return early if no video data has been observed\n\n                if (nalUnits.length === 0) {\n                    this.resetStream_();\n                    this.trigger('done', 'VideoSegmentStream');\n                    return;\n                } // Organize the raw nal-units into arrays that represent\n                // higher-level constructs such as frames and gops\n                // (group-of-pictures)\n\n                frames = frameUtils.groupNalsIntoFrames(nalUnits);\n                gops = frameUtils.groupFramesIntoGops(frames); // If the first frame of this fragment is not a keyframe we have\n                // a problem since MSE (on Chrome) requires a leading keyframe.\n                //\n                // We have two approaches to repairing this situation:\n                // 1) GOP-FUSION:\n                //    This is where we keep track of the GOPS (group-of-pictures)\n                //    from previous fragments and attempt to find one that we can\n                //    prepend to the current fragment in order to create a valid\n                //    fragment.\n                // 2) KEYFRAME-PULLING:\n                //    Here we search for the first keyframe in the fragment and\n                //    throw away all the frames between the start of the fragment\n                //    and that keyframe. We then extend the duration and pull the\n                //    PTS of the keyframe forward so that it covers the time range\n                //    of the frames that were disposed of.\n                //\n                // #1 is far prefereable over #2 which can cause \"stuttering\" but\n                // requires more things to be just right.\n\n                if (!gops[0][0].keyFrame) {\n                    // Search for a gop for fusion from our gopCache\n                    gopForFusion = this.getGopForFusion_(nalUnits[0], track);\n                    if (gopForFusion) {\n                        // in order to provide more accurate timing information about the segment, save\n                        // the number of seconds prepended to the original segment due to GOP fusion\n                        prependedContentDuration = gopForFusion.duration;\n                        gops.unshift(gopForFusion); // Adjust Gops' metadata to account for the inclusion of the\n                        // new gop at the beginning\n\n                        gops.byteLength += gopForFusion.byteLength;\n                        gops.nalCount += gopForFusion.nalCount;\n                        gops.pts = gopForFusion.pts;\n                        gops.dts = gopForFusion.dts;\n                        gops.duration += gopForFusion.duration;\n                    } else {\n                        // If we didn't find a candidate gop fall back to keyframe-pulling\n                        gops = frameUtils.extendFirstKeyFrame(gops);\n                    }\n                } // Trim gops to align with gopsToAlignWith\n\n                if (gopsToAlignWith.length) {\n                    var alignedGops;\n                    if (options.alignGopsAtEnd) {\n                        alignedGops = this.alignGopsAtEnd_(gops);\n                    } else {\n                        alignedGops = this.alignGopsAtStart_(gops);\n                    }\n                    if (!alignedGops) {\n                        // save all the nals in the last GOP into the gop cache\n                        this.gopCache_.unshift({\n                            gop: gops.pop(),\n                            pps: track.pps,\n                            sps: track.sps\n                        }); // Keep a maximum of 6 GOPs in the cache\n\n                        this.gopCache_.length = Math.min(6, this.gopCache_.length); // Clear nalUnits\n\n                        nalUnits = []; // return early no gops can be aligned with desired gopsToAlignWith\n\n                        this.resetStream_();\n                        this.trigger('done', 'VideoSegmentStream');\n                        return;\n                    } // Some gops were trimmed. clear dts info so minSegmentDts and pts are correct\n                    // when recalculated before sending off to CoalesceStream\n\n                    trackDecodeInfo.clearDtsInfo(track);\n                    gops = alignedGops;\n                }\n                trackDecodeInfo.collectDtsInfo(track, gops); // First, we have to build the index from byte locations to\n                // samples (that is, frames) in the video data\n\n                track.samples = frameUtils.generateSampleTable(gops); // Concatenate the video data and construct the mdat\n\n                mdat = mp4.mdat(frameUtils.concatenateNalData(gops));\n                track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps);\n                this.trigger('processedGopsInfo', gops.map(function (gop) {\n                    return {\n                        pts: gop.pts,\n                        dts: gop.dts,\n                        byteLength: gop.byteLength\n                    };\n                }));\n                firstGop = gops[0];\n                lastGop = gops[gops.length - 1];\n                this.trigger('segmentTimingInfo', generateSegmentTimingInfo(track.baseMediaDecodeTime, firstGop.dts, firstGop.pts, lastGop.dts + lastGop.duration, lastGop.pts + lastGop.duration, prependedContentDuration));\n                this.trigger('timingInfo', {\n                    start: gops[0].pts,\n                    end: gops[gops.length - 1].pts + gops[gops.length - 1].duration\n                }); // save all the nals in the last GOP into the gop cache\n\n                this.gopCache_.unshift({\n                    gop: gops.pop(),\n                    pps: track.pps,\n                    sps: track.sps\n                }); // Keep a maximum of 6 GOPs in the cache\n\n                this.gopCache_.length = Math.min(6, this.gopCache_.length); // Clear nalUnits\n\n                nalUnits = [];\n                this.trigger('baseMediaDecodeTime', track.baseMediaDecodeTime);\n                this.trigger('timelineStartInfo', track.timelineStartInfo);\n                moof = mp4.moof(sequenceNumber, [track]); // it would be great to allocate this array up front instead of\n                // throwing away hundreds of media segment fragments\n\n                boxes = new Uint8Array(moof.byteLength + mdat.byteLength); // Bump the sequence number for next time\n\n                sequenceNumber++;\n                boxes.set(moof);\n                boxes.set(mdat, moof.byteLength);\n                this.trigger('data', {\n                    track: track,\n                    boxes: boxes\n                });\n                this.resetStream_(); // Continue with the flush process now\n\n                this.trigger('done', 'VideoSegmentStream');\n            };\n            this.reset = function () {\n                this.resetStream_();\n                nalUnits = [];\n                this.gopCache_.length = 0;\n                gopsToAlignWith.length = 0;\n                this.trigger('reset');\n            };\n            this.resetStream_ = function () {\n                trackDecodeInfo.clearDtsInfo(track); // reset config and pps because they may differ across segments\n                // for instance, when we are rendition switching\n\n                config = undefined;\n                pps = undefined;\n            }; // Search for a candidate Gop for gop-fusion from the gop cache and\n            // return it or return null if no good candidate was found\n\n            this.getGopForFusion_ = function (nalUnit) {\n                var halfSecond = 45000,\n                    // Half-a-second in a 90khz clock\n                    allowableOverlap = 10000,\n                    // About 3 frames @ 30fps\n                    nearestDistance = Infinity,\n                    dtsDistance,\n                    nearestGopObj,\n                    currentGop,\n                    currentGopObj,\n                    i; // Search for the GOP nearest to the beginning of this nal unit\n\n                for (i = 0; i < this.gopCache_.length; i++) {\n                    currentGopObj = this.gopCache_[i];\n                    currentGop = currentGopObj.gop; // Reject Gops with different SPS or PPS\n\n                    if (!(track.pps && arrayEquals(track.pps[0], currentGopObj.pps[0])) || !(track.sps && arrayEquals(track.sps[0], currentGopObj.sps[0]))) {\n                        continue;\n                    } // Reject Gops that would require a negative baseMediaDecodeTime\n\n                    if (currentGop.dts < track.timelineStartInfo.dts) {\n                        continue;\n                    } // The distance between the end of the gop and the start of the nalUnit\n\n                    dtsDistance = nalUnit.dts - currentGop.dts - currentGop.duration; // Only consider GOPS that start before the nal unit and end within\n                    // a half-second of the nal unit\n\n                    if (dtsDistance >= -allowableOverlap && dtsDistance <= halfSecond) {\n                        // Always use the closest GOP we found if there is more than\n                        // one candidate\n                        if (!nearestGopObj || nearestDistance > dtsDistance) {\n                            nearestGopObj = currentGopObj;\n                            nearestDistance = dtsDistance;\n                        }\n                    }\n                }\n                if (nearestGopObj) {\n                    return nearestGopObj.gop;\n                }\n                return null;\n            }; // trim gop list to the first gop found that has a matching pts with a gop in the list\n            // of gopsToAlignWith starting from the START of the list\n\n            this.alignGopsAtStart_ = function (gops) {\n                var alignIndex, gopIndex, align, gop, byteLength, nalCount, duration, alignedGops;\n                byteLength = gops.byteLength;\n                nalCount = gops.nalCount;\n                duration = gops.duration;\n                alignIndex = gopIndex = 0;\n                while (alignIndex < gopsToAlignWith.length && gopIndex < gops.length) {\n                    align = gopsToAlignWith[alignIndex];\n                    gop = gops[gopIndex];\n                    if (align.pts === gop.pts) {\n                        break;\n                    }\n                    if (gop.pts > align.pts) {\n                        // this current gop starts after the current gop we want to align on, so increment\n                        // align index\n                        alignIndex++;\n                        continue;\n                    } // current gop starts before the current gop we want to align on. so increment gop\n                    // index\n\n                    gopIndex++;\n                    byteLength -= gop.byteLength;\n                    nalCount -= gop.nalCount;\n                    duration -= gop.duration;\n                }\n                if (gopIndex === 0) {\n                    // no gops to trim\n                    return gops;\n                }\n                if (gopIndex === gops.length) {\n                    // all gops trimmed, skip appending all gops\n                    return null;\n                }\n                alignedGops = gops.slice(gopIndex);\n                alignedGops.byteLength = byteLength;\n                alignedGops.duration = duration;\n                alignedGops.nalCount = nalCount;\n                alignedGops.pts = alignedGops[0].pts;\n                alignedGops.dts = alignedGops[0].dts;\n                return alignedGops;\n            }; // trim gop list to the first gop found that has a matching pts with a gop in the list\n            // of gopsToAlignWith starting from the END of the list\n\n            this.alignGopsAtEnd_ = function (gops) {\n                var alignIndex, gopIndex, align, gop, alignEndIndex, matchFound;\n                alignIndex = gopsToAlignWith.length - 1;\n                gopIndex = gops.length - 1;\n                alignEndIndex = null;\n                matchFound = false;\n                while (alignIndex >= 0 && gopIndex >= 0) {\n                    align = gopsToAlignWith[alignIndex];\n                    gop = gops[gopIndex];\n                    if (align.pts === gop.pts) {\n                        matchFound = true;\n                        break;\n                    }\n                    if (align.pts > gop.pts) {\n                        alignIndex--;\n                        continue;\n                    }\n                    if (alignIndex === gopsToAlignWith.length - 1) {\n                        // gop.pts is greater than the last alignment candidate. If no match is found\n                        // by the end of this loop, we still want to append gops that come after this\n                        // point\n                        alignEndIndex = gopIndex;\n                    }\n                    gopIndex--;\n                }\n                if (!matchFound && alignEndIndex === null) {\n                    return null;\n                }\n                var trimIndex;\n                if (matchFound) {\n                    trimIndex = gopIndex;\n                } else {\n                    trimIndex = alignEndIndex;\n                }\n                if (trimIndex === 0) {\n                    return gops;\n                }\n                var alignedGops = gops.slice(trimIndex);\n                var metadata = alignedGops.reduce(function (total, gop) {\n                    total.byteLength += gop.byteLength;\n                    total.duration += gop.duration;\n                    total.nalCount += gop.nalCount;\n                    return total;\n                }, {\n                    byteLength: 0,\n                    duration: 0,\n                    nalCount: 0\n                });\n                alignedGops.byteLength = metadata.byteLength;\n                alignedGops.duration = metadata.duration;\n                alignedGops.nalCount = metadata.nalCount;\n                alignedGops.pts = alignedGops[0].pts;\n                alignedGops.dts = alignedGops[0].dts;\n                return alignedGops;\n            };\n            this.alignGopsWith = function (newGopsToAlignWith) {\n                gopsToAlignWith = newGopsToAlignWith;\n            };\n        };\n        VideoSegmentStream.prototype = new Stream();\n        /**\n         * A Stream that can combine multiple streams (ie. audio & video)\n         * into a single output segment for MSE. Also supports audio-only\n         * and video-only streams.\n         * @param options {object} transmuxer options object\n         * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps\n         *        in the source; false to adjust the first segment to start at media timeline start.\n         */\n\n        CoalesceStream = function (options, metadataStream) {\n            // Number of Tracks per output segment\n            // If greater than 1, we combine multiple\n            // tracks into a single segment\n            this.numberOfTracks = 0;\n            this.metadataStream = metadataStream;\n            options = options || {};\n            if (typeof options.remux !== 'undefined') {\n                this.remuxTracks = !!options.remux;\n            } else {\n                this.remuxTracks = true;\n            }\n            if (typeof options.keepOriginalTimestamps === 'boolean') {\n                this.keepOriginalTimestamps = options.keepOriginalTimestamps;\n            } else {\n                this.keepOriginalTimestamps = false;\n            }\n            this.pendingTracks = [];\n            this.videoTrack = null;\n            this.pendingBoxes = [];\n            this.pendingCaptions = [];\n            this.pendingMetadata = [];\n            this.pendingBytes = 0;\n            this.emittedTracks = 0;\n            CoalesceStream.prototype.init.call(this); // Take output from multiple\n\n            this.push = function (output) {\n                // buffer incoming captions until the associated video segment\n                // finishes\n                if (output.content || output.text) {\n                    return this.pendingCaptions.push(output);\n                } // buffer incoming id3 tags until the final flush\n\n                if (output.frames) {\n                    return this.pendingMetadata.push(output);\n                } // Add this track to the list of pending tracks and store\n                // important information required for the construction of\n                // the final segment\n\n                this.pendingTracks.push(output.track);\n                this.pendingBytes += output.boxes.byteLength; // TODO: is there an issue for this against chrome?\n                // We unshift audio and push video because\n                // as of Chrome 75 when switching from\n                // one init segment to another if the video\n                // mdat does not appear after the audio mdat\n                // only audio will play for the duration of our transmux.\n\n                if (output.track.type === 'video') {\n                    this.videoTrack = output.track;\n                    this.pendingBoxes.push(output.boxes);\n                }\n                if (output.track.type === 'audio') {\n                    this.audioTrack = output.track;\n                    this.pendingBoxes.unshift(output.boxes);\n                }\n            };\n        };\n        CoalesceStream.prototype = new Stream();\n        CoalesceStream.prototype.flush = function (flushSource) {\n            var offset = 0,\n                event = {\n                    captions: [],\n                    captionStreams: {},\n                    metadata: [],\n                    info: {}\n                },\n                caption,\n                id3,\n                initSegment,\n                timelineStartPts = 0,\n                i;\n            if (this.pendingTracks.length < this.numberOfTracks) {\n                if (flushSource !== 'VideoSegmentStream' && flushSource !== 'AudioSegmentStream') {\n                    // Return because we haven't received a flush from a data-generating\n                    // portion of the segment (meaning that we have only recieved meta-data\n                    // or captions.)\n                    return;\n                } else if (this.remuxTracks) {\n                    // Return until we have enough tracks from the pipeline to remux (if we\n                    // are remuxing audio and video into a single MP4)\n                    return;\n                } else if (this.pendingTracks.length === 0) {\n                    // In the case where we receive a flush without any data having been\n                    // received we consider it an emitted track for the purposes of coalescing\n                    // `done` events.\n                    // We do this for the case where there is an audio and video track in the\n                    // segment but no audio data. (seen in several playlists with alternate\n                    // audio tracks and no audio present in the main TS segments.)\n                    this.emittedTracks++;\n                    if (this.emittedTracks >= this.numberOfTracks) {\n                        this.trigger('done');\n                        this.emittedTracks = 0;\n                    }\n                    return;\n                }\n            }\n            if (this.videoTrack) {\n                timelineStartPts = this.videoTrack.timelineStartInfo.pts;\n                VIDEO_PROPERTIES.forEach(function (prop) {\n                    event.info[prop] = this.videoTrack[prop];\n                }, this);\n            } else if (this.audioTrack) {\n                timelineStartPts = this.audioTrack.timelineStartInfo.pts;\n                AUDIO_PROPERTIES.forEach(function (prop) {\n                    event.info[prop] = this.audioTrack[prop];\n                }, this);\n            }\n            if (this.videoTrack || this.audioTrack) {\n                if (this.pendingTracks.length === 1) {\n                    event.type = this.pendingTracks[0].type;\n                } else {\n                    event.type = 'combined';\n                }\n                this.emittedTracks += this.pendingTracks.length;\n                initSegment = mp4.initSegment(this.pendingTracks); // Create a new typed array to hold the init segment\n\n                event.initSegment = new Uint8Array(initSegment.byteLength); // Create an init segment containing a moov\n                // and track definitions\n\n                event.initSegment.set(initSegment); // Create a new typed array to hold the moof+mdats\n\n                event.data = new Uint8Array(this.pendingBytes); // Append each moof+mdat (one per track) together\n\n                for (i = 0; i < this.pendingBoxes.length; i++) {\n                    event.data.set(this.pendingBoxes[i], offset);\n                    offset += this.pendingBoxes[i].byteLength;\n                } // Translate caption PTS times into second offsets to match the\n                // video timeline for the segment, and add track info\n\n                for (i = 0; i < this.pendingCaptions.length; i++) {\n                    caption = this.pendingCaptions[i];\n                    caption.startTime = clock.metadataTsToSeconds(caption.startPts, timelineStartPts, this.keepOriginalTimestamps);\n                    caption.endTime = clock.metadataTsToSeconds(caption.endPts, timelineStartPts, this.keepOriginalTimestamps);\n                    event.captionStreams[caption.stream] = true;\n                    event.captions.push(caption);\n                } // Translate ID3 frame PTS times into second offsets to match the\n                // video timeline for the segment\n\n                for (i = 0; i < this.pendingMetadata.length; i++) {\n                    id3 = this.pendingMetadata[i];\n                    id3.cueTime = clock.metadataTsToSeconds(id3.pts, timelineStartPts, this.keepOriginalTimestamps);\n                    event.metadata.push(id3);\n                } // We add this to every single emitted segment even though we only need\n                // it for the first\n\n                event.metadata.dispatchType = this.metadataStream.dispatchType; // Reset stream state\n\n                this.pendingTracks.length = 0;\n                this.videoTrack = null;\n                this.pendingBoxes.length = 0;\n                this.pendingCaptions.length = 0;\n                this.pendingBytes = 0;\n                this.pendingMetadata.length = 0; // Emit the built segment\n                // We include captions and ID3 tags for backwards compatibility,\n                // ideally we should send only video and audio in the data event\n\n                this.trigger('data', event); // Emit each caption to the outside world\n                // Ideally, this would happen immediately on parsing captions,\n                // but we need to ensure that video data is sent back first\n                // so that caption timing can be adjusted to match video timing\n\n                for (i = 0; i < event.captions.length; i++) {\n                    caption = event.captions[i];\n                    this.trigger('caption', caption);\n                } // Emit each id3 tag to the outside world\n                // Ideally, this would happen immediately on parsing the tag,\n                // but we need to ensure that video data is sent back first\n                // so that ID3 frame timing can be adjusted to match video timing\n\n                for (i = 0; i < event.metadata.length; i++) {\n                    id3 = event.metadata[i];\n                    this.trigger('id3Frame', id3);\n                }\n            } // Only emit `done` if all tracks have been flushed and emitted\n\n            if (this.emittedTracks >= this.numberOfTracks) {\n                this.trigger('done');\n                this.emittedTracks = 0;\n            }\n        };\n        CoalesceStream.prototype.setRemux = function (val) {\n            this.remuxTracks = val;\n        };\n        /**\n         * A Stream that expects MP2T binary data as input and produces\n         * corresponding media segments, suitable for use with Media Source\n         * Extension (MSE) implementations that support the ISO BMFF byte\n         * stream format, like Chrome.\n         */\n\n        Transmuxer = function (options) {\n            var self = this,\n                hasFlushed = true,\n                videoTrack,\n                audioTrack;\n            Transmuxer.prototype.init.call(this);\n            options = options || {};\n            this.baseMediaDecodeTime = options.baseMediaDecodeTime || 0;\n            this.transmuxPipeline_ = {};\n            this.setupAacPipeline = function () {\n                var pipeline = {};\n                this.transmuxPipeline_ = pipeline;\n                pipeline.type = 'aac';\n                pipeline.metadataStream = new m2ts.MetadataStream(); // set up the parsing pipeline\n\n                pipeline.aacStream = new AacStream();\n                pipeline.audioTimestampRolloverStream = new m2ts.TimestampRolloverStream('audio');\n                pipeline.timedMetadataTimestampRolloverStream = new m2ts.TimestampRolloverStream('timed-metadata');\n                pipeline.adtsStream = new AdtsStream();\n                pipeline.coalesceStream = new CoalesceStream(options, pipeline.metadataStream);\n                pipeline.headOfPipeline = pipeline.aacStream;\n                pipeline.aacStream.pipe(pipeline.audioTimestampRolloverStream).pipe(pipeline.adtsStream);\n                pipeline.aacStream.pipe(pipeline.timedMetadataTimestampRolloverStream).pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream);\n                pipeline.metadataStream.on('timestamp', function (frame) {\n                    pipeline.aacStream.setTimestamp(frame.timeStamp);\n                });\n                pipeline.aacStream.on('data', function (data) {\n                    if (data.type !== 'timed-metadata' && data.type !== 'audio' || pipeline.audioSegmentStream) {\n                        return;\n                    }\n                    audioTrack = audioTrack || {\n                        timelineStartInfo: {\n                            baseMediaDecodeTime: self.baseMediaDecodeTime\n                        },\n                        codec: 'adts',\n                        type: 'audio'\n                    }; // hook up the audio segment stream to the first track with aac data\n\n                    pipeline.coalesceStream.numberOfTracks++;\n                    pipeline.audioSegmentStream = new AudioSegmentStream(audioTrack, options);\n                    pipeline.audioSegmentStream.on('log', self.getLogTrigger_('audioSegmentStream'));\n                    pipeline.audioSegmentStream.on('timingInfo', self.trigger.bind(self, 'audioTimingInfo')); // Set up the final part of the audio pipeline\n\n                    pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream); // emit pmt info\n\n                    self.trigger('trackinfo', {\n                        hasAudio: !!audioTrack,\n                        hasVideo: !!videoTrack\n                    });\n                }); // Re-emit any data coming from the coalesce stream to the outside world\n\n                pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data')); // Let the consumer know we have finished flushing the entire pipeline\n\n                pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));\n                addPipelineLogRetriggers(this, pipeline);\n            };\n            this.setupTsPipeline = function () {\n                var pipeline = {};\n                this.transmuxPipeline_ = pipeline;\n                pipeline.type = 'ts';\n                pipeline.metadataStream = new m2ts.MetadataStream(); // set up the parsing pipeline\n\n                pipeline.packetStream = new m2ts.TransportPacketStream();\n                pipeline.parseStream = new m2ts.TransportParseStream();\n                pipeline.elementaryStream = new m2ts.ElementaryStream();\n                pipeline.timestampRolloverStream = new m2ts.TimestampRolloverStream();\n                pipeline.adtsStream = new AdtsStream();\n                pipeline.h264Stream = new H264Stream();\n                pipeline.captionStream = new m2ts.CaptionStream(options);\n                pipeline.coalesceStream = new CoalesceStream(options, pipeline.metadataStream);\n                pipeline.headOfPipeline = pipeline.packetStream; // disassemble MPEG2-TS packets into elementary streams\n\n                pipeline.packetStream.pipe(pipeline.parseStream).pipe(pipeline.elementaryStream).pipe(pipeline.timestampRolloverStream); // !!THIS ORDER IS IMPORTANT!!\n                // demux the streams\n\n                pipeline.timestampRolloverStream.pipe(pipeline.h264Stream);\n                pipeline.timestampRolloverStream.pipe(pipeline.adtsStream);\n                pipeline.timestampRolloverStream.pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream); // Hook up CEA-608/708 caption stream\n\n                pipeline.h264Stream.pipe(pipeline.captionStream).pipe(pipeline.coalesceStream);\n                pipeline.elementaryStream.on('data', function (data) {\n                    var i;\n                    if (data.type === 'metadata') {\n                        i = data.tracks.length; // scan the tracks listed in the metadata\n\n                        while (i--) {\n                            if (!videoTrack && data.tracks[i].type === 'video') {\n                                videoTrack = data.tracks[i];\n                                videoTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;\n                            } else if (!audioTrack && data.tracks[i].type === 'audio') {\n                                audioTrack = data.tracks[i];\n                                audioTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;\n                            }\n                        } // hook up the video segment stream to the first track with h264 data\n\n                        if (videoTrack && !pipeline.videoSegmentStream) {\n                            pipeline.coalesceStream.numberOfTracks++;\n                            pipeline.videoSegmentStream = new VideoSegmentStream(videoTrack, options);\n                            pipeline.videoSegmentStream.on('log', self.getLogTrigger_('videoSegmentStream'));\n                            pipeline.videoSegmentStream.on('timelineStartInfo', function (timelineStartInfo) {\n                                // When video emits timelineStartInfo data after a flush, we forward that\n                                // info to the AudioSegmentStream, if it exists, because video timeline\n                                // data takes precedence.  Do not do this if keepOriginalTimestamps is set,\n                                // because this is a particularly subtle form of timestamp alteration.\n                                if (audioTrack && !options.keepOriginalTimestamps) {\n                                    audioTrack.timelineStartInfo = timelineStartInfo; // On the first segment we trim AAC frames that exist before the\n                                    // very earliest DTS we have seen in video because Chrome will\n                                    // interpret any video track with a baseMediaDecodeTime that is\n                                    // non-zero as a gap.\n\n                                    pipeline.audioSegmentStream.setEarliestDts(timelineStartInfo.dts - self.baseMediaDecodeTime);\n                                }\n                            });\n                            pipeline.videoSegmentStream.on('processedGopsInfo', self.trigger.bind(self, 'gopInfo'));\n                            pipeline.videoSegmentStream.on('segmentTimingInfo', self.trigger.bind(self, 'videoSegmentTimingInfo'));\n                            pipeline.videoSegmentStream.on('baseMediaDecodeTime', function (baseMediaDecodeTime) {\n                                if (audioTrack) {\n                                    pipeline.audioSegmentStream.setVideoBaseMediaDecodeTime(baseMediaDecodeTime);\n                                }\n                            });\n                            pipeline.videoSegmentStream.on('timingInfo', self.trigger.bind(self, 'videoTimingInfo')); // Set up the final part of the video pipeline\n\n                            pipeline.h264Stream.pipe(pipeline.videoSegmentStream).pipe(pipeline.coalesceStream);\n                        }\n                        if (audioTrack && !pipeline.audioSegmentStream) {\n                            // hook up the audio segment stream to the first track with aac data\n                            pipeline.coalesceStream.numberOfTracks++;\n                            pipeline.audioSegmentStream = new AudioSegmentStream(audioTrack, options);\n                            pipeline.audioSegmentStream.on('log', self.getLogTrigger_('audioSegmentStream'));\n                            pipeline.audioSegmentStream.on('timingInfo', self.trigger.bind(self, 'audioTimingInfo'));\n                            pipeline.audioSegmentStream.on('segmentTimingInfo', self.trigger.bind(self, 'audioSegmentTimingInfo')); // Set up the final part of the audio pipeline\n\n                            pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream);\n                        } // emit pmt info\n\n                        self.trigger('trackinfo', {\n                            hasAudio: !!audioTrack,\n                            hasVideo: !!videoTrack\n                        });\n                    }\n                }); // Re-emit any data coming from the coalesce stream to the outside world\n\n                pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data'));\n                pipeline.coalesceStream.on('id3Frame', function (id3Frame) {\n                    id3Frame.dispatchType = pipeline.metadataStream.dispatchType;\n                    self.trigger('id3Frame', id3Frame);\n                });\n                pipeline.coalesceStream.on('caption', this.trigger.bind(this, 'caption')); // Let the consumer know we have finished flushing the entire pipeline\n\n                pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));\n                addPipelineLogRetriggers(this, pipeline);\n            }; // hook up the segment streams once track metadata is delivered\n\n            this.setBaseMediaDecodeTime = function (baseMediaDecodeTime) {\n                var pipeline = this.transmuxPipeline_;\n                if (!options.keepOriginalTimestamps) {\n                    this.baseMediaDecodeTime = baseMediaDecodeTime;\n                }\n                if (audioTrack) {\n                    audioTrack.timelineStartInfo.dts = undefined;\n                    audioTrack.timelineStartInfo.pts = undefined;\n                    trackDecodeInfo.clearDtsInfo(audioTrack);\n                    if (pipeline.audioTimestampRolloverStream) {\n                        pipeline.audioTimestampRolloverStream.discontinuity();\n                    }\n                }\n                if (videoTrack) {\n                    if (pipeline.videoSegmentStream) {\n                        pipeline.videoSegmentStream.gopCache_ = [];\n                    }\n                    videoTrack.timelineStartInfo.dts = undefined;\n                    videoTrack.timelineStartInfo.pts = undefined;\n                    trackDecodeInfo.clearDtsInfo(videoTrack);\n                    pipeline.captionStream.reset();\n                }\n                if (pipeline.timestampRolloverStream) {\n                    pipeline.timestampRolloverStream.discontinuity();\n                }\n            };\n            this.setAudioAppendStart = function (timestamp) {\n                if (audioTrack) {\n                    this.transmuxPipeline_.audioSegmentStream.setAudioAppendStart(timestamp);\n                }\n            };\n            this.setRemux = function (val) {\n                var pipeline = this.transmuxPipeline_;\n                options.remux = val;\n                if (pipeline && pipeline.coalesceStream) {\n                    pipeline.coalesceStream.setRemux(val);\n                }\n            };\n            this.alignGopsWith = function (gopsToAlignWith) {\n                if (videoTrack && this.transmuxPipeline_.videoSegmentStream) {\n                    this.transmuxPipeline_.videoSegmentStream.alignGopsWith(gopsToAlignWith);\n                }\n            };\n            this.getLogTrigger_ = function (key) {\n                var self = this;\n                return function (event) {\n                    event.stream = key;\n                    self.trigger('log', event);\n                };\n            }; // feed incoming data to the front of the parsing pipeline\n\n            this.push = function (data) {\n                if (hasFlushed) {\n                    var isAac = isLikelyAacData(data);\n                    if (isAac && this.transmuxPipeline_.type !== 'aac') {\n                        this.setupAacPipeline();\n                    } else if (!isAac && this.transmuxPipeline_.type !== 'ts') {\n                        this.setupTsPipeline();\n                    }\n                    hasFlushed = false;\n                }\n                this.transmuxPipeline_.headOfPipeline.push(data);\n            }; // flush any buffered data\n\n            this.flush = function () {\n                hasFlushed = true; // Start at the top of the pipeline and flush all pending work\n\n                this.transmuxPipeline_.headOfPipeline.flush();\n            };\n            this.endTimeline = function () {\n                this.transmuxPipeline_.headOfPipeline.endTimeline();\n            };\n            this.reset = function () {\n                if (this.transmuxPipeline_.headOfPipeline) {\n                    this.transmuxPipeline_.headOfPipeline.reset();\n                }\n            }; // Caption data has to be reset when seeking outside buffered range\n\n            this.resetCaptions = function () {\n                if (this.transmuxPipeline_.captionStream) {\n                    this.transmuxPipeline_.captionStream.reset();\n                }\n            };\n        };\n        Transmuxer.prototype = new Stream();\n        var transmuxer = {\n            Transmuxer: Transmuxer,\n            VideoSegmentStream: VideoSegmentStream,\n            AudioSegmentStream: AudioSegmentStream,\n            AUDIO_PROPERTIES: AUDIO_PROPERTIES,\n            VIDEO_PROPERTIES: VIDEO_PROPERTIES,\n            // exported for testing\n            generateSegmentTimingInfo: generateSegmentTimingInfo\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         */\n\n        var toUnsigned$3 = function (value) {\n            return value >>> 0;\n        };\n        var toHexString$1 = function (value) {\n            return ('00' + value.toString(16)).slice(-2);\n        };\n        var bin = {\n            toUnsigned: toUnsigned$3,\n            toHexString: toHexString$1\n        };\n        var parseType$3 = function (buffer) {\n            var result = '';\n            result += String.fromCharCode(buffer[0]);\n            result += String.fromCharCode(buffer[1]);\n            result += String.fromCharCode(buffer[2]);\n            result += String.fromCharCode(buffer[3]);\n            return result;\n        };\n        var parseType_1 = parseType$3;\n        var toUnsigned$2 = bin.toUnsigned;\n        var parseType$2 = parseType_1;\n        var findBox$2 = function (data, path) {\n            var results = [],\n                i,\n                size,\n                type,\n                end,\n                subresults;\n            if (!path.length) {\n                // short-circuit the search for empty paths\n                return null;\n            }\n            for (i = 0; i < data.byteLength;) {\n                size = toUnsigned$2(data[i] << 24 | data[i + 1] << 16 | data[i + 2] << 8 | data[i + 3]);\n                type = parseType$2(data.subarray(i + 4, i + 8));\n                end = size > 1 ? i + size : data.byteLength;\n                if (type === path[0]) {\n                    if (path.length === 1) {\n                        // this is the end of the path and we've found the box we were\n                        // looking for\n                        results.push(data.subarray(i + 8, end));\n                    } else {\n                        // recursively search for the next box along the path\n                        subresults = findBox$2(data.subarray(i + 8, end), path.slice(1));\n                        if (subresults.length) {\n                            results = results.concat(subresults);\n                        }\n                    }\n                }\n                i = end;\n            } // we've finished searching all of data\n\n            return results;\n        };\n        var findBox_1 = findBox$2;\n        var toUnsigned$1 = bin.toUnsigned;\n        var getUint64$2 = numbers.getUint64;\n        var tfdt = function (data) {\n            var result = {\n                version: data[0],\n                flags: new Uint8Array(data.subarray(1, 4))\n            };\n            if (result.version === 1) {\n                result.baseMediaDecodeTime = getUint64$2(data.subarray(4));\n            } else {\n                result.baseMediaDecodeTime = toUnsigned$1(data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7]);\n            }\n            return result;\n        };\n        var parseTfdt$2 = tfdt;\n        var parseSampleFlags$1 = function (flags) {\n            return {\n                isLeading: (flags[0] & 0x0c) >>> 2,\n                dependsOn: flags[0] & 0x03,\n                isDependedOn: (flags[1] & 0xc0) >>> 6,\n                hasRedundancy: (flags[1] & 0x30) >>> 4,\n                paddingValue: (flags[1] & 0x0e) >>> 1,\n                isNonSyncSample: flags[1] & 0x01,\n                degradationPriority: flags[2] << 8 | flags[3]\n            };\n        };\n        var parseSampleFlags_1 = parseSampleFlags$1;\n        var parseSampleFlags = parseSampleFlags_1;\n        var trun = function (data) {\n            var result = {\n                    version: data[0],\n                    flags: new Uint8Array(data.subarray(1, 4)),\n                    samples: []\n                },\n                view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n                // Flag interpretation\n                dataOffsetPresent = result.flags[2] & 0x01,\n                // compare with 2nd byte of 0x1\n                firstSampleFlagsPresent = result.flags[2] & 0x04,\n                // compare with 2nd byte of 0x4\n                sampleDurationPresent = result.flags[1] & 0x01,\n                // compare with 2nd byte of 0x100\n                sampleSizePresent = result.flags[1] & 0x02,\n                // compare with 2nd byte of 0x200\n                sampleFlagsPresent = result.flags[1] & 0x04,\n                // compare with 2nd byte of 0x400\n                sampleCompositionTimeOffsetPresent = result.flags[1] & 0x08,\n                // compare with 2nd byte of 0x800\n                sampleCount = view.getUint32(4),\n                offset = 8,\n                sample;\n            if (dataOffsetPresent) {\n                // 32 bit signed integer\n                result.dataOffset = view.getInt32(offset);\n                offset += 4;\n            } // Overrides the flags for the first sample only. The order of\n            // optional values will be: duration, size, compositionTimeOffset\n\n            if (firstSampleFlagsPresent && sampleCount) {\n                sample = {\n                    flags: parseSampleFlags(data.subarray(offset, offset + 4))\n                };\n                offset += 4;\n                if (sampleDurationPresent) {\n                    sample.duration = view.getUint32(offset);\n                    offset += 4;\n                }\n                if (sampleSizePresent) {\n                    sample.size = view.getUint32(offset);\n                    offset += 4;\n                }\n                if (sampleCompositionTimeOffsetPresent) {\n                    if (result.version === 1) {\n                        sample.compositionTimeOffset = view.getInt32(offset);\n                    } else {\n                        sample.compositionTimeOffset = view.getUint32(offset);\n                    }\n                    offset += 4;\n                }\n                result.samples.push(sample);\n                sampleCount--;\n            }\n            while (sampleCount--) {\n                sample = {};\n                if (sampleDurationPresent) {\n                    sample.duration = view.getUint32(offset);\n                    offset += 4;\n                }\n                if (sampleSizePresent) {\n                    sample.size = view.getUint32(offset);\n                    offset += 4;\n                }\n                if (sampleFlagsPresent) {\n                    sample.flags = parseSampleFlags(data.subarray(offset, offset + 4));\n                    offset += 4;\n                }\n                if (sampleCompositionTimeOffsetPresent) {\n                    if (result.version === 1) {\n                        sample.compositionTimeOffset = view.getInt32(offset);\n                    } else {\n                        sample.compositionTimeOffset = view.getUint32(offset);\n                    }\n                    offset += 4;\n                }\n                result.samples.push(sample);\n            }\n            return result;\n        };\n        var parseTrun$2 = trun;\n        var tfhd = function (data) {\n            var view = new DataView(data.buffer, data.byteOffset, data.byteLength),\n                result = {\n                    version: data[0],\n                    flags: new Uint8Array(data.subarray(1, 4)),\n                    trackId: view.getUint32(4)\n                },\n                baseDataOffsetPresent = result.flags[2] & 0x01,\n                sampleDescriptionIndexPresent = result.flags[2] & 0x02,\n                defaultSampleDurationPresent = result.flags[2] & 0x08,\n                defaultSampleSizePresent = result.flags[2] & 0x10,\n                defaultSampleFlagsPresent = result.flags[2] & 0x20,\n                durationIsEmpty = result.flags[0] & 0x010000,\n                defaultBaseIsMoof = result.flags[0] & 0x020000,\n                i;\n            i = 8;\n            if (baseDataOffsetPresent) {\n                i += 4; // truncate top 4 bytes\n                // FIXME: should we read the full 64 bits?\n\n                result.baseDataOffset = view.getUint32(12);\n                i += 4;\n            }\n            if (sampleDescriptionIndexPresent) {\n                result.sampleDescriptionIndex = view.getUint32(i);\n                i += 4;\n            }\n            if (defaultSampleDurationPresent) {\n                result.defaultSampleDuration = view.getUint32(i);\n                i += 4;\n            }\n            if (defaultSampleSizePresent) {\n                result.defaultSampleSize = view.getUint32(i);\n                i += 4;\n            }\n            if (defaultSampleFlagsPresent) {\n                result.defaultSampleFlags = view.getUint32(i);\n            }\n            if (durationIsEmpty) {\n                result.durationIsEmpty = true;\n            }\n            if (!baseDataOffsetPresent && defaultBaseIsMoof) {\n                result.baseDataOffsetIsMoof = true;\n            }\n            return result;\n        };\n        var parseTfhd$2 = tfhd;\n        var win;\n        if (typeof window !== \"undefined\") {\n            win = window;\n        } else if (typeof commonjsGlobal !== \"undefined\") {\n            win = commonjsGlobal;\n        } else if (typeof self !== \"undefined\") {\n            win = self;\n        } else {\n            win = {};\n        }\n        var window_1 = win;\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Reads in-band CEA-708 captions out of FMP4 segments.\n         * @see https://en.wikipedia.org/wiki/CEA-708\n         */\n\n        var discardEmulationPreventionBytes = captionPacketParser.discardEmulationPreventionBytes;\n        var CaptionStream = captionStream.CaptionStream;\n        var findBox$1 = findBox_1;\n        var parseTfdt$1 = parseTfdt$2;\n        var parseTrun$1 = parseTrun$2;\n        var parseTfhd$1 = parseTfhd$2;\n        var window$2 = window_1;\n        /**\n         * Maps an offset in the mdat to a sample based on the the size of the samples.\n         * Assumes that `parseSamples` has been called first.\n         *\n         * @param {Number} offset - The offset into the mdat\n         * @param {Object[]} samples - An array of samples, parsed using `parseSamples`\n         * @return {?Object} The matching sample, or null if no match was found.\n         *\n         * @see ISO-BMFF-12/2015, Section 8.8.8\n         **/\n\n        var mapToSample = function (offset, samples) {\n            var approximateOffset = offset;\n            for (var i = 0; i < samples.length; i++) {\n                var sample = samples[i];\n                if (approximateOffset < sample.size) {\n                    return sample;\n                }\n                approximateOffset -= sample.size;\n            }\n            return null;\n        };\n        /**\n         * Finds SEI nal units contained in a Media Data Box.\n         * Assumes that `parseSamples` has been called first.\n         *\n         * @param {Uint8Array} avcStream - The bytes of the mdat\n         * @param {Object[]} samples - The samples parsed out by `parseSamples`\n         * @param {Number} trackId - The trackId of this video track\n         * @return {Object[]} seiNals - the parsed SEI NALUs found.\n         *   The contents of the seiNal should match what is expected by\n         *   CaptionStream.push (nalUnitType, size, data, escapedRBSP, pts, dts)\n         *\n         * @see ISO-BMFF-12/2015, Section 8.1.1\n         * @see Rec. ITU-T H.264, 7.3.2.3.1\n         **/\n\n        var findSeiNals = function (avcStream, samples, trackId) {\n            var avcView = new DataView(avcStream.buffer, avcStream.byteOffset, avcStream.byteLength),\n                result = {\n                    logs: [],\n                    seiNals: []\n                },\n                seiNal,\n                i,\n                length,\n                lastMatchedSample;\n            for (i = 0; i + 4 < avcStream.length; i += length) {\n                length = avcView.getUint32(i);\n                i += 4; // Bail if this doesn't appear to be an H264 stream\n\n                if (length <= 0) {\n                    continue;\n                }\n                switch (avcStream[i] & 0x1F) {\n                    case 0x06:\n                        var data = avcStream.subarray(i + 1, i + 1 + length);\n                        var matchingSample = mapToSample(i, samples);\n                        seiNal = {\n                            nalUnitType: 'sei_rbsp',\n                            size: length,\n                            data: data,\n                            escapedRBSP: discardEmulationPreventionBytes(data),\n                            trackId: trackId\n                        };\n                        if (matchingSample) {\n                            seiNal.pts = matchingSample.pts;\n                            seiNal.dts = matchingSample.dts;\n                            lastMatchedSample = matchingSample;\n                        } else if (lastMatchedSample) {\n                            // If a matching sample cannot be found, use the last\n                            // sample's values as they should be as close as possible\n                            seiNal.pts = lastMatchedSample.pts;\n                            seiNal.dts = lastMatchedSample.dts;\n                        } else {\n                            result.logs.push({\n                                level: 'warn',\n                                message: 'We\\'ve encountered a nal unit without data at ' + i + ' for trackId ' + trackId + '. See mux.js#223.'\n                            });\n                            break;\n                        }\n                        result.seiNals.push(seiNal);\n                        break;\n                }\n            }\n            return result;\n        };\n        /**\n         * Parses sample information out of Track Run Boxes and calculates\n         * the absolute presentation and decode timestamps of each sample.\n         *\n         * @param {Array<Uint8Array>} truns - The Trun Run boxes to be parsed\n         * @param {Number|BigInt} baseMediaDecodeTime - base media decode time from tfdt\n         @see ISO-BMFF-12/2015, Section 8.8.12\n         * @param {Object} tfhd - The parsed Track Fragment Header\n         *   @see inspect.parseTfhd\n         * @return {Object[]} the parsed samples\n         *\n         * @see ISO-BMFF-12/2015, Section 8.8.8\n         **/\n\n        var parseSamples = function (truns, baseMediaDecodeTime, tfhd) {\n            var currentDts = baseMediaDecodeTime;\n            var defaultSampleDuration = tfhd.defaultSampleDuration || 0;\n            var defaultSampleSize = tfhd.defaultSampleSize || 0;\n            var trackId = tfhd.trackId;\n            var allSamples = [];\n            truns.forEach(function (trun) {\n                // Note: We currently do not parse the sample table as well\n                // as the trun. It's possible some sources will require this.\n                // moov > trak > mdia > minf > stbl\n                var trackRun = parseTrun$1(trun);\n                var samples = trackRun.samples;\n                samples.forEach(function (sample) {\n                    if (sample.duration === undefined) {\n                        sample.duration = defaultSampleDuration;\n                    }\n                    if (sample.size === undefined) {\n                        sample.size = defaultSampleSize;\n                    }\n                    sample.trackId = trackId;\n                    sample.dts = currentDts;\n                    if (sample.compositionTimeOffset === undefined) {\n                        sample.compositionTimeOffset = 0;\n                    }\n                    if (typeof currentDts === 'bigint') {\n                        sample.pts = currentDts + window$2.BigInt(sample.compositionTimeOffset);\n                        currentDts += window$2.BigInt(sample.duration);\n                    } else {\n                        sample.pts = currentDts + sample.compositionTimeOffset;\n                        currentDts += sample.duration;\n                    }\n                });\n                allSamples = allSamples.concat(samples);\n            });\n            return allSamples;\n        };\n        /**\n         * Parses out caption nals from an FMP4 segment's video tracks.\n         *\n         * @param {Uint8Array} segment - The bytes of a single segment\n         * @param {Number} videoTrackId - The trackId of a video track in the segment\n         * @return {Object.<Number, Object[]>} A mapping of video trackId to\n         *   a list of seiNals found in that track\n         **/\n\n        var parseCaptionNals = function (segment, videoTrackId) {\n            // To get the samples\n            var trafs = findBox$1(segment, ['moof', 'traf']); // To get SEI NAL units\n\n            var mdats = findBox$1(segment, ['mdat']);\n            var captionNals = {};\n            var mdatTrafPairs = []; // Pair up each traf with a mdat as moofs and mdats are in pairs\n\n            mdats.forEach(function (mdat, index) {\n                var matchingTraf = trafs[index];\n                mdatTrafPairs.push({\n                    mdat: mdat,\n                    traf: matchingTraf\n                });\n            });\n            mdatTrafPairs.forEach(function (pair) {\n                var mdat = pair.mdat;\n                var traf = pair.traf;\n                var tfhd = findBox$1(traf, ['tfhd']); // Exactly 1 tfhd per traf\n\n                var headerInfo = parseTfhd$1(tfhd[0]);\n                var trackId = headerInfo.trackId;\n                var tfdt = findBox$1(traf, ['tfdt']); // Either 0 or 1 tfdt per traf\n\n                var baseMediaDecodeTime = tfdt.length > 0 ? parseTfdt$1(tfdt[0]).baseMediaDecodeTime : 0;\n                var truns = findBox$1(traf, ['trun']);\n                var samples;\n                var result; // Only parse video data for the chosen video track\n\n                if (videoTrackId === trackId && truns.length > 0) {\n                    samples = parseSamples(truns, baseMediaDecodeTime, headerInfo);\n                    result = findSeiNals(mdat, samples, trackId);\n                    if (!captionNals[trackId]) {\n                        captionNals[trackId] = {\n                            seiNals: [],\n                            logs: []\n                        };\n                    }\n                    captionNals[trackId].seiNals = captionNals[trackId].seiNals.concat(result.seiNals);\n                    captionNals[trackId].logs = captionNals[trackId].logs.concat(result.logs);\n                }\n            });\n            return captionNals;\n        };\n        /**\n         * Parses out inband captions from an MP4 container and returns\n         * caption objects that can be used by WebVTT and the TextTrack API.\n         * @see https://developer.mozilla.org/en-US/docs/Web/API/VTTCue\n         * @see https://developer.mozilla.org/en-US/docs/Web/API/TextTrack\n         * Assumes that `probe.getVideoTrackIds` and `probe.timescale` have been called first\n         *\n         * @param {Uint8Array} segment - The fmp4 segment containing embedded captions\n         * @param {Number} trackId - The id of the video track to parse\n         * @param {Number} timescale - The timescale for the video track from the init segment\n         *\n         * @return {?Object[]} parsedCaptions - A list of captions or null if no video tracks\n         * @return {Number} parsedCaptions[].startTime - The time to show the caption in seconds\n         * @return {Number} parsedCaptions[].endTime - The time to stop showing the caption in seconds\n         * @return {Object[]} parsedCaptions[].content - A list of individual caption segments\n         * @return {String} parsedCaptions[].content.text - The visible content of the caption segment\n         * @return {Number} parsedCaptions[].content.line - The line height from 1-15 for positioning of the caption segment\n         * @return {Number} parsedCaptions[].content.position - The column indent percentage for cue positioning from 10-80\n         **/\n\n        var parseEmbeddedCaptions = function (segment, trackId, timescale) {\n            var captionNals; // the ISO-BMFF spec says that trackId can't be zero, but there's some broken content out there\n\n            if (trackId === null) {\n                return null;\n            }\n            captionNals = parseCaptionNals(segment, trackId);\n            var trackNals = captionNals[trackId] || {};\n            return {\n                seiNals: trackNals.seiNals,\n                logs: trackNals.logs,\n                timescale: timescale\n            };\n        };\n        /**\n         * Converts SEI NALUs into captions that can be used by video.js\n         **/\n\n        var CaptionParser = function () {\n            var isInitialized = false;\n            var captionStream; // Stores segments seen before trackId and timescale are set\n\n            var segmentCache; // Stores video track ID of the track being parsed\n\n            var trackId; // Stores the timescale of the track being parsed\n\n            var timescale; // Stores captions parsed so far\n\n            var parsedCaptions; // Stores whether we are receiving partial data or not\n\n            var parsingPartial;\n            /**\n             * A method to indicate whether a CaptionParser has been initalized\n             * @returns {Boolean}\n             **/\n\n            this.isInitialized = function () {\n                return isInitialized;\n            };\n            /**\n             * Initializes the underlying CaptionStream, SEI NAL parsing\n             * and management, and caption collection\n             **/\n\n            this.init = function (options) {\n                captionStream = new CaptionStream();\n                isInitialized = true;\n                parsingPartial = options ? options.isPartial : false; // Collect dispatched captions\n\n                captionStream.on('data', function (event) {\n                    // Convert to seconds in the source's timescale\n                    event.startTime = event.startPts / timescale;\n                    event.endTime = event.endPts / timescale;\n                    parsedCaptions.captions.push(event);\n                    parsedCaptions.captionStreams[event.stream] = true;\n                });\n                captionStream.on('log', function (log) {\n                    parsedCaptions.logs.push(log);\n                });\n            };\n            /**\n             * Determines if a new video track will be selected\n             * or if the timescale changed\n             * @return {Boolean}\n             **/\n\n            this.isNewInit = function (videoTrackIds, timescales) {\n                if (videoTrackIds && videoTrackIds.length === 0 || timescales && typeof timescales === 'object' && Object.keys(timescales).length === 0) {\n                    return false;\n                }\n                return trackId !== videoTrackIds[0] || timescale !== timescales[trackId];\n            };\n            /**\n             * Parses out SEI captions and interacts with underlying\n             * CaptionStream to return dispatched captions\n             *\n             * @param {Uint8Array} segment - The fmp4 segment containing embedded captions\n             * @param {Number[]} videoTrackIds - A list of video tracks found in the init segment\n             * @param {Object.<Number, Number>} timescales - The timescales found in the init segment\n             * @see parseEmbeddedCaptions\n             * @see m2ts/caption-stream.js\n             **/\n\n            this.parse = function (segment, videoTrackIds, timescales) {\n                var parsedData;\n                if (!this.isInitialized()) {\n                    return null; // This is not likely to be a video segment\n                } else if (!videoTrackIds || !timescales) {\n                    return null;\n                } else if (this.isNewInit(videoTrackIds, timescales)) {\n                    // Use the first video track only as there is no\n                    // mechanism to switch to other video tracks\n                    trackId = videoTrackIds[0];\n                    timescale = timescales[trackId]; // If an init segment has not been seen yet, hold onto segment\n                    // data until we have one.\n                    // the ISO-BMFF spec says that trackId can't be zero, but there's some broken content out there\n                } else if (trackId === null || !timescale) {\n                    segmentCache.push(segment);\n                    return null;\n                } // Now that a timescale and trackId is set, parse cached segments\n\n                while (segmentCache.length > 0) {\n                    var cachedSegment = segmentCache.shift();\n                    this.parse(cachedSegment, videoTrackIds, timescales);\n                }\n                parsedData = parseEmbeddedCaptions(segment, trackId, timescale);\n                if (parsedData && parsedData.logs) {\n                    parsedCaptions.logs = parsedCaptions.logs.concat(parsedData.logs);\n                }\n                if (parsedData === null || !parsedData.seiNals) {\n                    if (parsedCaptions.logs.length) {\n                        return {\n                            logs: parsedCaptions.logs,\n                            captions: [],\n                            captionStreams: []\n                        };\n                    }\n                    return null;\n                }\n                this.pushNals(parsedData.seiNals); // Force the parsed captions to be dispatched\n\n                this.flushStream();\n                return parsedCaptions;\n            };\n            /**\n             * Pushes SEI NALUs onto CaptionStream\n             * @param {Object[]} nals - A list of SEI nals parsed using `parseCaptionNals`\n             * Assumes that `parseCaptionNals` has been called first\n             * @see m2ts/caption-stream.js\n             **/\n\n            this.pushNals = function (nals) {\n                if (!this.isInitialized() || !nals || nals.length === 0) {\n                    return null;\n                }\n                nals.forEach(function (nal) {\n                    captionStream.push(nal);\n                });\n            };\n            /**\n             * Flushes underlying CaptionStream to dispatch processed, displayable captions\n             * @see m2ts/caption-stream.js\n             **/\n\n            this.flushStream = function () {\n                if (!this.isInitialized()) {\n                    return null;\n                }\n                if (!parsingPartial) {\n                    captionStream.flush();\n                } else {\n                    captionStream.partialFlush();\n                }\n            };\n            /**\n             * Reset caption buckets for new data\n             **/\n\n            this.clearParsedCaptions = function () {\n                parsedCaptions.captions = [];\n                parsedCaptions.captionStreams = {};\n                parsedCaptions.logs = [];\n            };\n            /**\n             * Resets underlying CaptionStream\n             * @see m2ts/caption-stream.js\n             **/\n\n            this.resetCaptionStream = function () {\n                if (!this.isInitialized()) {\n                    return null;\n                }\n                captionStream.reset();\n            };\n            /**\n             * Convenience method to clear all captions flushed from the\n             * CaptionStream and still being parsed\n             * @see m2ts/caption-stream.js\n             **/\n\n            this.clearAllCaptions = function () {\n                this.clearParsedCaptions();\n                this.resetCaptionStream();\n            };\n            /**\n             * Reset caption parser\n             **/\n\n            this.reset = function () {\n                segmentCache = [];\n                trackId = null;\n                timescale = null;\n                if (!parsedCaptions) {\n                    parsedCaptions = {\n                        captions: [],\n                        // CC1, CC2, CC3, CC4\n                        captionStreams: {},\n                        logs: []\n                    };\n                } else {\n                    this.clearParsedCaptions();\n                }\n                this.resetCaptionStream();\n            };\n            this.reset();\n        };\n        var captionParser = CaptionParser;\n        /**\n         * Returns the first string in the data array ending with a null char '\\0'\n         * @param {UInt8} data\n         * @returns the string with the null char\n         */\n\n        var uint8ToCString$1 = function (data) {\n            var index = 0;\n            var curChar = String.fromCharCode(data[index]);\n            var retString = '';\n            while (curChar !== '\\0') {\n                retString += curChar;\n                index++;\n                curChar = String.fromCharCode(data[index]);\n            } // Add nullChar\n\n            retString += curChar;\n            return retString;\n        };\n        var string = {\n            uint8ToCString: uint8ToCString$1\n        };\n        var uint8ToCString = string.uint8ToCString;\n        var getUint64$1 = numbers.getUint64;\n        /**\n         * Based on: ISO/IEC 23009 Section: 5.10.3.3\n         * References:\n         * https://dashif-documents.azurewebsites.net/Events/master/event.html#emsg-format\n         * https://aomediacodec.github.io/id3-emsg/\n         *\n         * Takes emsg box data as a uint8 array and returns a emsg box object\n         * @param {UInt8Array} boxData data from emsg box\n         * @returns A parsed emsg box object\n         */\n\n        var parseEmsgBox = function (boxData) {\n            // version + flags\n            var offset = 4;\n            var version = boxData[0];\n            var scheme_id_uri, value, timescale, presentation_time, presentation_time_delta, event_duration, id, message_data;\n            if (version === 0) {\n                scheme_id_uri = uint8ToCString(boxData.subarray(offset));\n                offset += scheme_id_uri.length;\n                value = uint8ToCString(boxData.subarray(offset));\n                offset += value.length;\n                var dv = new DataView(boxData.buffer);\n                timescale = dv.getUint32(offset);\n                offset += 4;\n                presentation_time_delta = dv.getUint32(offset);\n                offset += 4;\n                event_duration = dv.getUint32(offset);\n                offset += 4;\n                id = dv.getUint32(offset);\n                offset += 4;\n            } else if (version === 1) {\n                var dv = new DataView(boxData.buffer);\n                timescale = dv.getUint32(offset);\n                offset += 4;\n                presentation_time = getUint64$1(boxData.subarray(offset));\n                offset += 8;\n                event_duration = dv.getUint32(offset);\n                offset += 4;\n                id = dv.getUint32(offset);\n                offset += 4;\n                scheme_id_uri = uint8ToCString(boxData.subarray(offset));\n                offset += scheme_id_uri.length;\n                value = uint8ToCString(boxData.subarray(offset));\n                offset += value.length;\n            }\n            message_data = new Uint8Array(boxData.subarray(offset, boxData.byteLength));\n            var emsgBox = {\n                scheme_id_uri,\n                value,\n                // if timescale is undefined or 0 set to 1\n                timescale: timescale ? timescale : 1,\n                presentation_time,\n                presentation_time_delta,\n                event_duration,\n                id,\n                message_data\n            };\n            return isValidEmsgBox(version, emsgBox) ? emsgBox : undefined;\n        };\n        /**\n         * Scales a presentation time or time delta with an offset with a provided timescale\n         * @param {number} presentationTime\n         * @param {number} timescale\n         * @param {number} timeDelta\n         * @param {number} offset\n         * @returns the scaled time as a number\n         */\n\n        var scaleTime = function (presentationTime, timescale, timeDelta, offset) {\n            return presentationTime || presentationTime === 0 ? presentationTime / timescale : offset + timeDelta / timescale;\n        };\n        /**\n         * Checks the emsg box data for validity based on the version\n         * @param {number} version of the emsg box to validate\n         * @param {Object} emsg the emsg data to validate\n         * @returns if the box is valid as a boolean\n         */\n\n        var isValidEmsgBox = function (version, emsg) {\n            var hasScheme = emsg.scheme_id_uri !== '\\0';\n            var isValidV0Box = version === 0 && isDefined(emsg.presentation_time_delta) && hasScheme;\n            var isValidV1Box = version === 1 && isDefined(emsg.presentation_time) && hasScheme; // Only valid versions of emsg are 0 and 1\n\n            return !(version > 1) && isValidV0Box || isValidV1Box;\n        }; // Utility function to check if an object is defined\n\n        var isDefined = function (data) {\n            return data !== undefined || data !== null;\n        };\n        var emsg$1 = {\n            parseEmsgBox: parseEmsgBox,\n            scaleTime: scaleTime\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Utilities to detect basic properties and metadata about MP4s.\n         */\n\n        var toUnsigned = bin.toUnsigned;\n        var toHexString = bin.toHexString;\n        var findBox = findBox_1;\n        var parseType$1 = parseType_1;\n        var emsg = emsg$1;\n        var parseTfhd = parseTfhd$2;\n        var parseTrun = parseTrun$2;\n        var parseTfdt = parseTfdt$2;\n        var getUint64 = numbers.getUint64;\n        var timescale, startTime, compositionStartTime, getVideoTrackIds, getTracks, getTimescaleFromMediaHeader, getEmsgID3;\n        var window$1 = window_1;\n        var parseId3Frames = parseId3.parseId3Frames;\n        /**\n         * Parses an MP4 initialization segment and extracts the timescale\n         * values for any declared tracks. Timescale values indicate the\n         * number of clock ticks per second to assume for time-based values\n         * elsewhere in the MP4.\n         *\n         * To determine the start time of an MP4, you need two pieces of\n         * information: the timescale unit and the earliest base media decode\n         * time. Multiple timescales can be specified within an MP4 but the\n         * base media decode time is always expressed in the timescale from\n         * the media header box for the track:\n         * ```\n         * moov > trak > mdia > mdhd.timescale\n         * ```\n         * @param init {Uint8Array} the bytes of the init segment\n         * @return {object} a hash of track ids to timescale values or null if\n         * the init segment is malformed.\n         */\n\n        timescale = function (init) {\n            var result = {},\n                traks = findBox(init, ['moov', 'trak']); // mdhd timescale\n\n            return traks.reduce(function (result, trak) {\n                var tkhd, version, index, id, mdhd;\n                tkhd = findBox(trak, ['tkhd'])[0];\n                if (!tkhd) {\n                    return null;\n                }\n                version = tkhd[0];\n                index = version === 0 ? 12 : 20;\n                id = toUnsigned(tkhd[index] << 24 | tkhd[index + 1] << 16 | tkhd[index + 2] << 8 | tkhd[index + 3]);\n                mdhd = findBox(trak, ['mdia', 'mdhd'])[0];\n                if (!mdhd) {\n                    return null;\n                }\n                version = mdhd[0];\n                index = version === 0 ? 12 : 20;\n                result[id] = toUnsigned(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]);\n                return result;\n            }, result);\n        };\n        /**\n         * Determine the base media decode start time, in seconds, for an MP4\n         * fragment. If multiple fragments are specified, the earliest time is\n         * returned.\n         *\n         * The base media decode time can be parsed from track fragment\n         * metadata:\n         * ```\n         * moof > traf > tfdt.baseMediaDecodeTime\n         * ```\n         * It requires the timescale value from the mdhd to interpret.\n         *\n         * @param timescale {object} a hash of track ids to timescale values.\n         * @return {number} the earliest base media decode start time for the\n         * fragment, in seconds\n         */\n\n        startTime = function (timescale, fragment) {\n            var trafs; // we need info from two childrend of each track fragment box\n\n            trafs = findBox(fragment, ['moof', 'traf']); // determine the start times for each track\n\n            var lowestTime = trafs.reduce(function (acc, traf) {\n                var tfhd = findBox(traf, ['tfhd'])[0]; // get the track id from the tfhd\n\n                var id = toUnsigned(tfhd[4] << 24 | tfhd[5] << 16 | tfhd[6] << 8 | tfhd[7]); // assume a 90kHz clock if no timescale was specified\n\n                var scale = timescale[id] || 90e3; // get the base media decode time from the tfdt\n\n                var tfdt = findBox(traf, ['tfdt'])[0];\n                var dv = new DataView(tfdt.buffer, tfdt.byteOffset, tfdt.byteLength);\n                var baseTime; // version 1 is 64 bit\n\n                if (tfdt[0] === 1) {\n                    baseTime = getUint64(tfdt.subarray(4, 12));\n                } else {\n                    baseTime = dv.getUint32(4);\n                } // convert base time to seconds if it is a valid number.\n\n                let seconds;\n                if (typeof baseTime === 'bigint') {\n                    seconds = baseTime / window$1.BigInt(scale);\n                } else if (typeof baseTime === 'number' && !isNaN(baseTime)) {\n                    seconds = baseTime / scale;\n                }\n                if (seconds < Number.MAX_SAFE_INTEGER) {\n                    seconds = Number(seconds);\n                }\n                if (seconds < acc) {\n                    acc = seconds;\n                }\n                return acc;\n            }, Infinity);\n            return typeof lowestTime === 'bigint' || isFinite(lowestTime) ? lowestTime : 0;\n        };\n        /**\n         * Determine the composition start, in seconds, for an MP4\n         * fragment.\n         *\n         * The composition start time of a fragment can be calculated using the base\n         * media decode time, composition time offset, and timescale, as follows:\n         *\n         * compositionStartTime = (baseMediaDecodeTime + compositionTimeOffset) / timescale\n         *\n         * All of the aforementioned information is contained within a media fragment's\n         * `traf` box, except for timescale info, which comes from the initialization\n         * segment, so a track id (also contained within a `traf`) is also necessary to\n         * associate it with a timescale\n         *\n         *\n         * @param timescales {object} - a hash of track ids to timescale values.\n         * @param fragment {Unit8Array} - the bytes of a media segment\n         * @return {number} the composition start time for the fragment, in seconds\n         **/\n\n        compositionStartTime = function (timescales, fragment) {\n            var trafBoxes = findBox(fragment, ['moof', 'traf']);\n            var baseMediaDecodeTime = 0;\n            var compositionTimeOffset = 0;\n            var trackId;\n            if (trafBoxes && trafBoxes.length) {\n                // The spec states that track run samples contained within a `traf` box are contiguous, but\n                // it does not explicitly state whether the `traf` boxes themselves are contiguous.\n                // We will assume that they are, so we only need the first to calculate start time.\n                var tfhd = findBox(trafBoxes[0], ['tfhd'])[0];\n                var trun = findBox(trafBoxes[0], ['trun'])[0];\n                var tfdt = findBox(trafBoxes[0], ['tfdt'])[0];\n                if (tfhd) {\n                    var parsedTfhd = parseTfhd(tfhd);\n                    trackId = parsedTfhd.trackId;\n                }\n                if (tfdt) {\n                    var parsedTfdt = parseTfdt(tfdt);\n                    baseMediaDecodeTime = parsedTfdt.baseMediaDecodeTime;\n                }\n                if (trun) {\n                    var parsedTrun = parseTrun(trun);\n                    if (parsedTrun.samples && parsedTrun.samples.length) {\n                        compositionTimeOffset = parsedTrun.samples[0].compositionTimeOffset || 0;\n                    }\n                }\n            } // Get timescale for this specific track. Assume a 90kHz clock if no timescale was\n            // specified.\n\n            var timescale = timescales[trackId] || 90e3; // return the composition start time, in seconds\n\n            if (typeof baseMediaDecodeTime === 'bigint') {\n                compositionTimeOffset = window$1.BigInt(compositionTimeOffset);\n                timescale = window$1.BigInt(timescale);\n            }\n            var result = (baseMediaDecodeTime + compositionTimeOffset) / timescale;\n            if (typeof result === 'bigint' && result < Number.MAX_SAFE_INTEGER) {\n                result = Number(result);\n            }\n            return result;\n        };\n        /**\n         * Find the trackIds of the video tracks in this source.\n         * Found by parsing the Handler Reference and Track Header Boxes:\n         *   moov > trak > mdia > hdlr\n         *   moov > trak > tkhd\n         *\n         * @param {Uint8Array} init - The bytes of the init segment for this source\n         * @return {Number[]} A list of trackIds\n         *\n         * @see ISO-BMFF-12/2015, Section 8.4.3\n         **/\n\n        getVideoTrackIds = function (init) {\n            var traks = findBox(init, ['moov', 'trak']);\n            var videoTrackIds = [];\n            traks.forEach(function (trak) {\n                var hdlrs = findBox(trak, ['mdia', 'hdlr']);\n                var tkhds = findBox(trak, ['tkhd']);\n                hdlrs.forEach(function (hdlr, index) {\n                    var handlerType = parseType$1(hdlr.subarray(8, 12));\n                    var tkhd = tkhds[index];\n                    var view;\n                    var version;\n                    var trackId;\n                    if (handlerType === 'vide') {\n                        view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);\n                        version = view.getUint8(0);\n                        trackId = version === 0 ? view.getUint32(12) : view.getUint32(20);\n                        videoTrackIds.push(trackId);\n                    }\n                });\n            });\n            return videoTrackIds;\n        };\n        getTimescaleFromMediaHeader = function (mdhd) {\n            // mdhd is a FullBox, meaning it will have its own version as the first byte\n            var version = mdhd[0];\n            var index = version === 0 ? 12 : 20;\n            return toUnsigned(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]);\n        };\n        /**\n         * Get all the video, audio, and hint tracks from a non fragmented\n         * mp4 segment\n         */\n\n        getTracks = function (init) {\n            var traks = findBox(init, ['moov', 'trak']);\n            var tracks = [];\n            traks.forEach(function (trak) {\n                var track = {};\n                var tkhd = findBox(trak, ['tkhd'])[0];\n                var view, tkhdVersion; // id\n\n                if (tkhd) {\n                    view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);\n                    tkhdVersion = view.getUint8(0);\n                    track.id = tkhdVersion === 0 ? view.getUint32(12) : view.getUint32(20);\n                }\n                var hdlr = findBox(trak, ['mdia', 'hdlr'])[0]; // type\n\n                if (hdlr) {\n                    var type = parseType$1(hdlr.subarray(8, 12));\n                    if (type === 'vide') {\n                        track.type = 'video';\n                    } else if (type === 'soun') {\n                        track.type = 'audio';\n                    } else {\n                        track.type = type;\n                    }\n                } // codec\n\n                var stsd = findBox(trak, ['mdia', 'minf', 'stbl', 'stsd'])[0];\n                if (stsd) {\n                    var sampleDescriptions = stsd.subarray(8); // gives the codec type string\n\n                    track.codec = parseType$1(sampleDescriptions.subarray(4, 8));\n                    var codecBox = findBox(sampleDescriptions, [track.codec])[0];\n                    var codecConfig, codecConfigType;\n                    if (codecBox) {\n                        // https://tools.ietf.org/html/rfc6381#section-3.3\n                        if (/^[asm]vc[1-9]$/i.test(track.codec)) {\n                            // we don't need anything but the \"config\" parameter of the\n                            // avc1 codecBox\n                            codecConfig = codecBox.subarray(78);\n                            codecConfigType = parseType$1(codecConfig.subarray(4, 8));\n                            if (codecConfigType === 'avcC' && codecConfig.length > 11) {\n                                track.codec += '.'; // left padded with zeroes for single digit hex\n                                // profile idc\n\n                                track.codec += toHexString(codecConfig[9]); // the byte containing the constraint_set flags\n\n                                track.codec += toHexString(codecConfig[10]); // level idc\n\n                                track.codec += toHexString(codecConfig[11]);\n                            } else {\n                                // TODO: show a warning that we couldn't parse the codec\n                                // and are using the default\n                                track.codec = 'avc1.4d400d';\n                            }\n                        } else if (/^mp4[a,v]$/i.test(track.codec)) {\n                            // we do not need anything but the streamDescriptor of the mp4a codecBox\n                            codecConfig = codecBox.subarray(28);\n                            codecConfigType = parseType$1(codecConfig.subarray(4, 8));\n                            if (codecConfigType === 'esds' && codecConfig.length > 20 && codecConfig[19] !== 0) {\n                                track.codec += '.' + toHexString(codecConfig[19]); // this value is only a single digit\n\n                                track.codec += '.' + toHexString(codecConfig[20] >>> 2 & 0x3f).replace(/^0/, '');\n                            } else {\n                                // TODO: show a warning that we couldn't parse the codec\n                                // and are using the default\n                                track.codec = 'mp4a.40.2';\n                            }\n                        } else {\n                            // flac, opus, etc\n                            track.codec = track.codec.toLowerCase();\n                        }\n                    }\n                }\n                var mdhd = findBox(trak, ['mdia', 'mdhd'])[0];\n                if (mdhd) {\n                    track.timescale = getTimescaleFromMediaHeader(mdhd);\n                }\n                tracks.push(track);\n            });\n            return tracks;\n        };\n        /**\n         * Returns an array of emsg ID3 data from the provided segmentData.\n         * An offset can also be provided as the Latest Arrival Time to calculate\n         * the Event Start Time of v0 EMSG boxes.\n         * See: https://dashif-documents.azurewebsites.net/Events/master/event.html#Inband-event-timing\n         *\n         * @param {Uint8Array} segmentData the segment byte array.\n         * @param {number} offset the segment start time or Latest Arrival Time,\n         * @return {Object[]} an array of ID3 parsed from EMSG boxes\n         */\n\n        getEmsgID3 = function (segmentData, offset = 0) {\n            var emsgBoxes = findBox(segmentData, ['emsg']);\n            return emsgBoxes.map(data => {\n                var parsedBox = emsg.parseEmsgBox(new Uint8Array(data));\n                var parsedId3Frames = parseId3Frames(parsedBox.message_data);\n                return {\n                    cueTime: emsg.scaleTime(parsedBox.presentation_time, parsedBox.timescale, parsedBox.presentation_time_delta, offset),\n                    duration: emsg.scaleTime(parsedBox.event_duration, parsedBox.timescale),\n                    frames: parsedId3Frames\n                };\n            });\n        };\n        var probe$2 = {\n            // export mp4 inspector's findBox and parseType for backwards compatibility\n            findBox: findBox,\n            parseType: parseType$1,\n            timescale: timescale,\n            startTime: startTime,\n            compositionStartTime: compositionStartTime,\n            videoTrackIds: getVideoTrackIds,\n            tracks: getTracks,\n            getTimescaleFromMediaHeader: getTimescaleFromMediaHeader,\n            getEmsgID3: getEmsgID3\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Utilities to detect basic properties and metadata about TS Segments.\n         */\n\n        var StreamTypes$1 = streamTypes;\n        var parsePid = function (packet) {\n            var pid = packet[1] & 0x1f;\n            pid <<= 8;\n            pid |= packet[2];\n            return pid;\n        };\n        var parsePayloadUnitStartIndicator = function (packet) {\n            return !!(packet[1] & 0x40);\n        };\n        var parseAdaptionField = function (packet) {\n            var offset = 0; // if an adaption field is present, its length is specified by the\n            // fifth byte of the TS packet header. The adaptation field is\n            // used to add stuffing to PES packets that don't fill a complete\n            // TS packet, and to specify some forms of timing and control data\n            // that we do not currently use.\n\n            if ((packet[3] & 0x30) >>> 4 > 0x01) {\n                offset += packet[4] + 1;\n            }\n            return offset;\n        };\n        var parseType = function (packet, pmtPid) {\n            var pid = parsePid(packet);\n            if (pid === 0) {\n                return 'pat';\n            } else if (pid === pmtPid) {\n                return 'pmt';\n            } else if (pmtPid) {\n                return 'pes';\n            }\n            return null;\n        };\n        var parsePat = function (packet) {\n            var pusi = parsePayloadUnitStartIndicator(packet);\n            var offset = 4 + parseAdaptionField(packet);\n            if (pusi) {\n                offset += packet[offset] + 1;\n            }\n            return (packet[offset + 10] & 0x1f) << 8 | packet[offset + 11];\n        };\n        var parsePmt = function (packet) {\n            var programMapTable = {};\n            var pusi = parsePayloadUnitStartIndicator(packet);\n            var payloadOffset = 4 + parseAdaptionField(packet);\n            if (pusi) {\n                payloadOffset += packet[payloadOffset] + 1;\n            } // PMTs can be sent ahead of the time when they should actually\n            // take effect. We don't believe this should ever be the case\n            // for HLS but we'll ignore \"forward\" PMT declarations if we see\n            // them. Future PMT declarations have the current_next_indicator\n            // set to zero.\n\n            if (!(packet[payloadOffset + 5] & 0x01)) {\n                return;\n            }\n            var sectionLength, tableEnd, programInfoLength; // the mapping table ends at the end of the current section\n\n            sectionLength = (packet[payloadOffset + 1] & 0x0f) << 8 | packet[payloadOffset + 2];\n            tableEnd = 3 + sectionLength - 4; // to determine where the table is, we have to figure out how\n            // long the program info descriptors are\n\n            programInfoLength = (packet[payloadOffset + 10] & 0x0f) << 8 | packet[payloadOffset + 11]; // advance the offset to the first entry in the mapping table\n\n            var offset = 12 + programInfoLength;\n            while (offset < tableEnd) {\n                var i = payloadOffset + offset; // add an entry that maps the elementary_pid to the stream_type\n\n                programMapTable[(packet[i + 1] & 0x1F) << 8 | packet[i + 2]] = packet[i]; // move to the next table entry\n                // skip past the elementary stream descriptors, if present\n\n                offset += ((packet[i + 3] & 0x0F) << 8 | packet[i + 4]) + 5;\n            }\n            return programMapTable;\n        };\n        var parsePesType = function (packet, programMapTable) {\n            var pid = parsePid(packet);\n            var type = programMapTable[pid];\n            switch (type) {\n                case StreamTypes$1.H264_STREAM_TYPE:\n                    return 'video';\n                case StreamTypes$1.ADTS_STREAM_TYPE:\n                    return 'audio';\n                case StreamTypes$1.METADATA_STREAM_TYPE:\n                    return 'timed-metadata';\n                default:\n                    return null;\n            }\n        };\n        var parsePesTime = function (packet) {\n            var pusi = parsePayloadUnitStartIndicator(packet);\n            if (!pusi) {\n                return null;\n            }\n            var offset = 4 + parseAdaptionField(packet);\n            if (offset >= packet.byteLength) {\n                // From the H 222.0 MPEG-TS spec\n                // \"For transport stream packets carrying PES packets, stuffing is needed when there\n                //  is insufficient PES packet data to completely fill the transport stream packet\n                //  payload bytes. Stuffing is accomplished by defining an adaptation field longer than\n                //  the sum of the lengths of the data elements in it, so that the payload bytes\n                //  remaining after the adaptation field exactly accommodates the available PES packet\n                //  data.\"\n                //\n                // If the offset is >= the length of the packet, then the packet contains no data\n                // and instead is just adaption field stuffing bytes\n                return null;\n            }\n            var pes = null;\n            var ptsDtsFlags; // PES packets may be annotated with a PTS value, or a PTS value\n            // and a DTS value. Determine what combination of values is\n            // available to work with.\n\n            ptsDtsFlags = packet[offset + 7]; // PTS and DTS are normally stored as a 33-bit number.  Javascript\n            // performs all bitwise operations on 32-bit integers but javascript\n            // supports a much greater range (52-bits) of integer using standard\n            // mathematical operations.\n            // We construct a 31-bit value using bitwise operators over the 31\n            // most significant bits and then multiply by 4 (equal to a left-shift\n            // of 2) before we add the final 2 least significant bits of the\n            // timestamp (equal to an OR.)\n\n            if (ptsDtsFlags & 0xC0) {\n                pes = {}; // the PTS and DTS are not written out directly. For information\n                // on how they are encoded, see\n                // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html\n\n                pes.pts = (packet[offset + 9] & 0x0E) << 27 | (packet[offset + 10] & 0xFF) << 20 | (packet[offset + 11] & 0xFE) << 12 | (packet[offset + 12] & 0xFF) << 5 | (packet[offset + 13] & 0xFE) >>> 3;\n                pes.pts *= 4; // Left shift by 2\n\n                pes.pts += (packet[offset + 13] & 0x06) >>> 1; // OR by the two LSBs\n\n                pes.dts = pes.pts;\n                if (ptsDtsFlags & 0x40) {\n                    pes.dts = (packet[offset + 14] & 0x0E) << 27 | (packet[offset + 15] & 0xFF) << 20 | (packet[offset + 16] & 0xFE) << 12 | (packet[offset + 17] & 0xFF) << 5 | (packet[offset + 18] & 0xFE) >>> 3;\n                    pes.dts *= 4; // Left shift by 2\n\n                    pes.dts += (packet[offset + 18] & 0x06) >>> 1; // OR by the two LSBs\n                }\n            }\n\n            return pes;\n        };\n        var parseNalUnitType = function (type) {\n            switch (type) {\n                case 0x05:\n                    return 'slice_layer_without_partitioning_rbsp_idr';\n                case 0x06:\n                    return 'sei_rbsp';\n                case 0x07:\n                    return 'seq_parameter_set_rbsp';\n                case 0x08:\n                    return 'pic_parameter_set_rbsp';\n                case 0x09:\n                    return 'access_unit_delimiter_rbsp';\n                default:\n                    return null;\n            }\n        };\n        var videoPacketContainsKeyFrame = function (packet) {\n            var offset = 4 + parseAdaptionField(packet);\n            var frameBuffer = packet.subarray(offset);\n            var frameI = 0;\n            var frameSyncPoint = 0;\n            var foundKeyFrame = false;\n            var nalType; // advance the sync point to a NAL start, if necessary\n\n            for (; frameSyncPoint < frameBuffer.byteLength - 3; frameSyncPoint++) {\n                if (frameBuffer[frameSyncPoint + 2] === 1) {\n                    // the sync point is properly aligned\n                    frameI = frameSyncPoint + 5;\n                    break;\n                }\n            }\n            while (frameI < frameBuffer.byteLength) {\n                // look at the current byte to determine if we've hit the end of\n                // a NAL unit boundary\n                switch (frameBuffer[frameI]) {\n                    case 0:\n                        // skip past non-sync sequences\n                        if (frameBuffer[frameI - 1] !== 0) {\n                            frameI += 2;\n                            break;\n                        } else if (frameBuffer[frameI - 2] !== 0) {\n                            frameI++;\n                            break;\n                        }\n                        if (frameSyncPoint + 3 !== frameI - 2) {\n                            nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n                            if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n                                foundKeyFrame = true;\n                            }\n                        } // drop trailing zeroes\n\n                        do {\n                            frameI++;\n                        } while (frameBuffer[frameI] !== 1 && frameI < frameBuffer.length);\n                        frameSyncPoint = frameI - 2;\n                        frameI += 3;\n                        break;\n                    case 1:\n                        // skip past non-sync sequences\n                        if (frameBuffer[frameI - 1] !== 0 || frameBuffer[frameI - 2] !== 0) {\n                            frameI += 3;\n                            break;\n                        }\n                        nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n                        if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n                            foundKeyFrame = true;\n                        }\n                        frameSyncPoint = frameI - 2;\n                        frameI += 3;\n                        break;\n                    default:\n                        // the current byte isn't a one or zero, so it cannot be part\n                        // of a sync sequence\n                        frameI += 3;\n                        break;\n                }\n            }\n            frameBuffer = frameBuffer.subarray(frameSyncPoint);\n            frameI -= frameSyncPoint;\n            frameSyncPoint = 0; // parse the final nal\n\n            if (frameBuffer && frameBuffer.byteLength > 3) {\n                nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);\n                if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {\n                    foundKeyFrame = true;\n                }\n            }\n            return foundKeyFrame;\n        };\n        var probe$1 = {\n            parseType: parseType,\n            parsePat: parsePat,\n            parsePmt: parsePmt,\n            parsePayloadUnitStartIndicator: parsePayloadUnitStartIndicator,\n            parsePesType: parsePesType,\n            parsePesTime: parsePesTime,\n            videoPacketContainsKeyFrame: videoPacketContainsKeyFrame\n        };\n        /**\n         * mux.js\n         *\n         * Copyright (c) Brightcove\n         * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE\n         *\n         * Parse mpeg2 transport stream packets to extract basic timing information\n         */\n\n        var StreamTypes = streamTypes;\n        var handleRollover = timestampRolloverStream.handleRollover;\n        var probe = {};\n        probe.ts = probe$1;\n        probe.aac = utils;\n        var ONE_SECOND_IN_TS = clock$2.ONE_SECOND_IN_TS;\n        var MP2T_PACKET_LENGTH = 188,\n            // bytes\n            SYNC_BYTE = 0x47;\n        /**\n         * walks through segment data looking for pat and pmt packets to parse out\n         * program map table information\n         */\n\n        var parsePsi_ = function (bytes, pmt) {\n            var startIndex = 0,\n                endIndex = MP2T_PACKET_LENGTH,\n                packet,\n                type;\n            while (endIndex < bytes.byteLength) {\n                // Look for a pair of start and end sync bytes in the data..\n                if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {\n                    // We found a packet\n                    packet = bytes.subarray(startIndex, endIndex);\n                    type = probe.ts.parseType(packet, pmt.pid);\n                    switch (type) {\n                        case 'pat':\n                            pmt.pid = probe.ts.parsePat(packet);\n                            break;\n                        case 'pmt':\n                            var table = probe.ts.parsePmt(packet);\n                            pmt.table = pmt.table || {};\n                            Object.keys(table).forEach(function (key) {\n                                pmt.table[key] = table[key];\n                            });\n                            break;\n                    }\n                    startIndex += MP2T_PACKET_LENGTH;\n                    endIndex += MP2T_PACKET_LENGTH;\n                    continue;\n                } // If we get here, we have somehow become de-synchronized and we need to step\n                // forward one byte at a time until we find a pair of sync bytes that denote\n                // a packet\n\n                startIndex++;\n                endIndex++;\n            }\n        };\n        /**\n         * walks through the segment data from the start and end to get timing information\n         * for the first and last audio pes packets\n         */\n\n        var parseAudioPes_ = function (bytes, pmt, result) {\n            var startIndex = 0,\n                endIndex = MP2T_PACKET_LENGTH,\n                packet,\n                type,\n                pesType,\n                pusi,\n                parsed;\n            var endLoop = false; // Start walking from start of segment to get first audio packet\n\n            while (endIndex <= bytes.byteLength) {\n                // Look for a pair of start and end sync bytes in the data..\n                if (bytes[startIndex] === SYNC_BYTE && (bytes[endIndex] === SYNC_BYTE || endIndex === bytes.byteLength)) {\n                    // We found a packet\n                    packet = bytes.subarray(startIndex, endIndex);\n                    type = probe.ts.parseType(packet, pmt.pid);\n                    switch (type) {\n                        case 'pes':\n                            pesType = probe.ts.parsePesType(packet, pmt.table);\n                            pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n                            if (pesType === 'audio' && pusi) {\n                                parsed = probe.ts.parsePesTime(packet);\n                                if (parsed) {\n                                    parsed.type = 'audio';\n                                    result.audio.push(parsed);\n                                    endLoop = true;\n                                }\n                            }\n                            break;\n                    }\n                    if (endLoop) {\n                        break;\n                    }\n                    startIndex += MP2T_PACKET_LENGTH;\n                    endIndex += MP2T_PACKET_LENGTH;\n                    continue;\n                } // If we get here, we have somehow become de-synchronized and we need to step\n                // forward one byte at a time until we find a pair of sync bytes that denote\n                // a packet\n\n                startIndex++;\n                endIndex++;\n            } // Start walking from end of segment to get last audio packet\n\n            endIndex = bytes.byteLength;\n            startIndex = endIndex - MP2T_PACKET_LENGTH;\n            endLoop = false;\n            while (startIndex >= 0) {\n                // Look for a pair of start and end sync bytes in the data..\n                if (bytes[startIndex] === SYNC_BYTE && (bytes[endIndex] === SYNC_BYTE || endIndex === bytes.byteLength)) {\n                    // We found a packet\n                    packet = bytes.subarray(startIndex, endIndex);\n                    type = probe.ts.parseType(packet, pmt.pid);\n                    switch (type) {\n                        case 'pes':\n                            pesType = probe.ts.parsePesType(packet, pmt.table);\n                            pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n                            if (pesType === 'audio' && pusi) {\n                                parsed = probe.ts.parsePesTime(packet);\n                                if (parsed) {\n                                    parsed.type = 'audio';\n                                    result.audio.push(parsed);\n                                    endLoop = true;\n                                }\n                            }\n                            break;\n                    }\n                    if (endLoop) {\n                        break;\n                    }\n                    startIndex -= MP2T_PACKET_LENGTH;\n                    endIndex -= MP2T_PACKET_LENGTH;\n                    continue;\n                } // If we get here, we have somehow become de-synchronized and we need to step\n                // forward one byte at a time until we find a pair of sync bytes that denote\n                // a packet\n\n                startIndex--;\n                endIndex--;\n            }\n        };\n        /**\n         * walks through the segment data from the start and end to get timing information\n         * for the first and last video pes packets as well as timing information for the first\n         * key frame.\n         */\n\n        var parseVideoPes_ = function (bytes, pmt, result) {\n            var startIndex = 0,\n                endIndex = MP2T_PACKET_LENGTH,\n                packet,\n                type,\n                pesType,\n                pusi,\n                parsed,\n                frame,\n                i,\n                pes;\n            var endLoop = false;\n            var currentFrame = {\n                data: [],\n                size: 0\n            }; // Start walking from start of segment to get first video packet\n\n            while (endIndex < bytes.byteLength) {\n                // Look for a pair of start and end sync bytes in the data..\n                if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {\n                    // We found a packet\n                    packet = bytes.subarray(startIndex, endIndex);\n                    type = probe.ts.parseType(packet, pmt.pid);\n                    switch (type) {\n                        case 'pes':\n                            pesType = probe.ts.parsePesType(packet, pmt.table);\n                            pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n                            if (pesType === 'video') {\n                                if (pusi && !endLoop) {\n                                    parsed = probe.ts.parsePesTime(packet);\n                                    if (parsed) {\n                                        parsed.type = 'video';\n                                        result.video.push(parsed);\n                                        endLoop = true;\n                                    }\n                                }\n                                if (!result.firstKeyFrame) {\n                                    if (pusi) {\n                                        if (currentFrame.size !== 0) {\n                                            frame = new Uint8Array(currentFrame.size);\n                                            i = 0;\n                                            while (currentFrame.data.length) {\n                                                pes = currentFrame.data.shift();\n                                                frame.set(pes, i);\n                                                i += pes.byteLength;\n                                            }\n                                            if (probe.ts.videoPacketContainsKeyFrame(frame)) {\n                                                var firstKeyFrame = probe.ts.parsePesTime(frame); // PTS/DTS may not be available. Simply *not* setting\n                                                // the keyframe seems to work fine with HLS playback\n                                                // and definitely preferable to a crash with TypeError...\n\n                                                if (firstKeyFrame) {\n                                                    result.firstKeyFrame = firstKeyFrame;\n                                                    result.firstKeyFrame.type = 'video';\n                                                } else {\n                                                    // eslint-disable-next-line\n                                                    console.warn('Failed to extract PTS/DTS from PES at first keyframe. ' + 'This could be an unusual TS segment, or else mux.js did not ' + 'parse your TS segment correctly. If you know your TS ' + 'segments do contain PTS/DTS on keyframes please file a bug ' + 'report! You can try ffprobe to double check for yourself.');\n                                                }\n                                            }\n                                            currentFrame.size = 0;\n                                        }\n                                    }\n                                    currentFrame.data.push(packet);\n                                    currentFrame.size += packet.byteLength;\n                                }\n                            }\n                            break;\n                    }\n                    if (endLoop && result.firstKeyFrame) {\n                        break;\n                    }\n                    startIndex += MP2T_PACKET_LENGTH;\n                    endIndex += MP2T_PACKET_LENGTH;\n                    continue;\n                } // If we get here, we have somehow become de-synchronized and we need to step\n                // forward one byte at a time until we find a pair of sync bytes that denote\n                // a packet\n\n                startIndex++;\n                endIndex++;\n            } // Start walking from end of segment to get last video packet\n\n            endIndex = bytes.byteLength;\n            startIndex = endIndex - MP2T_PACKET_LENGTH;\n            endLoop = false;\n            while (startIndex >= 0) {\n                // Look for a pair of start and end sync bytes in the data..\n                if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {\n                    // We found a packet\n                    packet = bytes.subarray(startIndex, endIndex);\n                    type = probe.ts.parseType(packet, pmt.pid);\n                    switch (type) {\n                        case 'pes':\n                            pesType = probe.ts.parsePesType(packet, pmt.table);\n                            pusi = probe.ts.parsePayloadUnitStartIndicator(packet);\n                            if (pesType === 'video' && pusi) {\n                                parsed = probe.ts.parsePesTime(packet);\n                                if (parsed) {\n                                    parsed.type = 'video';\n                                    result.video.push(parsed);\n                                    endLoop = true;\n                                }\n                            }\n                            break;\n                    }\n                    if (endLoop) {\n                        break;\n                    }\n                    startIndex -= MP2T_PACKET_LENGTH;\n                    endIndex -= MP2T_PACKET_LENGTH;\n                    continue;\n                } // If we get here, we have somehow become de-synchronized and we need to step\n                // forward one byte at a time until we find a pair of sync bytes that denote\n                // a packet\n\n                startIndex--;\n                endIndex--;\n            }\n        };\n        /**\n         * Adjusts the timestamp information for the segment to account for\n         * rollover and convert to seconds based on pes packet timescale (90khz clock)\n         */\n\n        var adjustTimestamp_ = function (segmentInfo, baseTimestamp) {\n            if (segmentInfo.audio && segmentInfo.audio.length) {\n                var audioBaseTimestamp = baseTimestamp;\n                if (typeof audioBaseTimestamp === 'undefined' || isNaN(audioBaseTimestamp)) {\n                    audioBaseTimestamp = segmentInfo.audio[0].dts;\n                }\n                segmentInfo.audio.forEach(function (info) {\n                    info.dts = handleRollover(info.dts, audioBaseTimestamp);\n                    info.pts = handleRollover(info.pts, audioBaseTimestamp); // time in seconds\n\n                    info.dtsTime = info.dts / ONE_SECOND_IN_TS;\n                    info.ptsTime = info.pts / ONE_SECOND_IN_TS;\n                });\n            }\n            if (segmentInfo.video && segmentInfo.video.length) {\n                var videoBaseTimestamp = baseTimestamp;\n                if (typeof videoBaseTimestamp === 'undefined' || isNaN(videoBaseTimestamp)) {\n                    videoBaseTimestamp = segmentInfo.video[0].dts;\n                }\n                segmentInfo.video.forEach(function (info) {\n                    info.dts = handleRollover(info.dts, videoBaseTimestamp);\n                    info.pts = handleRollover(info.pts, videoBaseTimestamp); // time in seconds\n\n                    info.dtsTime = info.dts / ONE_SECOND_IN_TS;\n                    info.ptsTime = info.pts / ONE_SECOND_IN_TS;\n                });\n                if (segmentInfo.firstKeyFrame) {\n                    var frame = segmentInfo.firstKeyFrame;\n                    frame.dts = handleRollover(frame.dts, videoBaseTimestamp);\n                    frame.pts = handleRollover(frame.pts, videoBaseTimestamp); // time in seconds\n\n                    frame.dtsTime = frame.dts / ONE_SECOND_IN_TS;\n                    frame.ptsTime = frame.pts / ONE_SECOND_IN_TS;\n                }\n            }\n        };\n        /**\n         * inspects the aac data stream for start and end time information\n         */\n\n        var inspectAac_ = function (bytes) {\n            var endLoop = false,\n                audioCount = 0,\n                sampleRate = null,\n                timestamp = null,\n                frameSize = 0,\n                byteIndex = 0,\n                packet;\n            while (bytes.length - byteIndex >= 3) {\n                var type = probe.aac.parseType(bytes, byteIndex);\n                switch (type) {\n                    case 'timed-metadata':\n                        // Exit early because we don't have enough to parse\n                        // the ID3 tag header\n                        if (bytes.length - byteIndex < 10) {\n                            endLoop = true;\n                            break;\n                        }\n                        frameSize = probe.aac.parseId3TagSize(bytes, byteIndex); // Exit early if we don't have enough in the buffer\n                        // to emit a full packet\n\n                        if (frameSize > bytes.length) {\n                            endLoop = true;\n                            break;\n                        }\n                        if (timestamp === null) {\n                            packet = bytes.subarray(byteIndex, byteIndex + frameSize);\n                            timestamp = probe.aac.parseAacTimestamp(packet);\n                        }\n                        byteIndex += frameSize;\n                        break;\n                    case 'audio':\n                        // Exit early because we don't have enough to parse\n                        // the ADTS frame header\n                        if (bytes.length - byteIndex < 7) {\n                            endLoop = true;\n                            break;\n                        }\n                        frameSize = probe.aac.parseAdtsSize(bytes, byteIndex); // Exit early if we don't have enough in the buffer\n                        // to emit a full packet\n\n                        if (frameSize > bytes.length) {\n                            endLoop = true;\n                            break;\n                        }\n                        if (sampleRate === null) {\n                            packet = bytes.subarray(byteIndex, byteIndex + frameSize);\n                            sampleRate = probe.aac.parseSampleRate(packet);\n                        }\n                        audioCount++;\n                        byteIndex += frameSize;\n                        break;\n                    default:\n                        byteIndex++;\n                        break;\n                }\n                if (endLoop) {\n                    return null;\n                }\n            }\n            if (sampleRate === null || timestamp === null) {\n                return null;\n            }\n            var audioTimescale = ONE_SECOND_IN_TS / sampleRate;\n            var result = {\n                audio: [{\n                    type: 'audio',\n                    dts: timestamp,\n                    pts: timestamp\n                }, {\n                    type: 'audio',\n                    dts: timestamp + audioCount * 1024 * audioTimescale,\n                    pts: timestamp + audioCount * 1024 * audioTimescale\n                }]\n            };\n            return result;\n        };\n        /**\n         * inspects the transport stream segment data for start and end time information\n         * of the audio and video tracks (when present) as well as the first key frame's\n         * start time.\n         */\n\n        var inspectTs_ = function (bytes) {\n            var pmt = {\n                pid: null,\n                table: null\n            };\n            var result = {};\n            parsePsi_(bytes, pmt);\n            for (var pid in pmt.table) {\n                if (pmt.table.hasOwnProperty(pid)) {\n                    var type = pmt.table[pid];\n                    switch (type) {\n                        case StreamTypes.H264_STREAM_TYPE:\n                            result.video = [];\n                            parseVideoPes_(bytes, pmt, result);\n                            if (result.video.length === 0) {\n                                delete result.video;\n                            }\n                            break;\n                        case StreamTypes.ADTS_STREAM_TYPE:\n                            result.audio = [];\n                            parseAudioPes_(bytes, pmt, result);\n                            if (result.audio.length === 0) {\n                                delete result.audio;\n                            }\n                            break;\n                    }\n                }\n            }\n            return result;\n        };\n        /**\n         * Inspects segment byte data and returns an object with start and end timing information\n         *\n         * @param {Uint8Array} bytes The segment byte data\n         * @param {Number} baseTimestamp Relative reference timestamp used when adjusting frame\n         *  timestamps for rollover. This value must be in 90khz clock.\n         * @return {Object} Object containing start and end frame timing info of segment.\n         */\n\n        var inspect = function (bytes, baseTimestamp) {\n            var isAacData = probe.aac.isLikelyAacData(bytes);\n            var result;\n            if (isAacData) {\n                result = inspectAac_(bytes);\n            } else {\n                result = inspectTs_(bytes);\n            }\n            if (!result || !result.audio && !result.video) {\n                return null;\n            }\n            adjustTimestamp_(result, baseTimestamp);\n            return result;\n        };\n        var tsInspector = {\n            inspect: inspect,\n            parseAudioPes_: parseAudioPes_\n        };\n        /* global self */\n\n        /**\n         * Re-emits transmuxer events by converting them into messages to the\n         * world outside the worker.\n         *\n         * @param {Object} transmuxer the transmuxer to wire events on\n         * @private\n         */\n\n        const wireTransmuxerEvents = function (self, transmuxer) {\n            transmuxer.on('data', function (segment) {\n                // transfer ownership of the underlying ArrayBuffer\n                // instead of doing a copy to save memory\n                // ArrayBuffers are transferable but generic TypedArrays are not\n                // @link https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers#Passing_data_by_transferring_ownership_(transferable_objects)\n                const initArray = segment.initSegment;\n                segment.initSegment = {\n                    data: initArray.buffer,\n                    byteOffset: initArray.byteOffset,\n                    byteLength: initArray.byteLength\n                };\n                const typedArray = segment.data;\n                segment.data = typedArray.buffer;\n                self.postMessage({\n                    action: 'data',\n                    segment,\n                    byteOffset: typedArray.byteOffset,\n                    byteLength: typedArray.byteLength\n                }, [segment.data]);\n            });\n            transmuxer.on('done', function (data) {\n                self.postMessage({\n                    action: 'done'\n                });\n            });\n            transmuxer.on('gopInfo', function (gopInfo) {\n                self.postMessage({\n                    action: 'gopInfo',\n                    gopInfo\n                });\n            });\n            transmuxer.on('videoSegmentTimingInfo', function (timingInfo) {\n                const videoSegmentTimingInfo = {\n                    start: {\n                        decode: clock$2.videoTsToSeconds(timingInfo.start.dts),\n                        presentation: clock$2.videoTsToSeconds(timingInfo.start.pts)\n                    },\n                    end: {\n                        decode: clock$2.videoTsToSeconds(timingInfo.end.dts),\n                        presentation: clock$2.videoTsToSeconds(timingInfo.end.pts)\n                    },\n                    baseMediaDecodeTime: clock$2.videoTsToSeconds(timingInfo.baseMediaDecodeTime)\n                };\n                if (timingInfo.prependedContentDuration) {\n                    videoSegmentTimingInfo.prependedContentDuration = clock$2.videoTsToSeconds(timingInfo.prependedContentDuration);\n                }\n                self.postMessage({\n                    action: 'videoSegmentTimingInfo',\n                    videoSegmentTimingInfo\n                });\n            });\n            transmuxer.on('audioSegmentTimingInfo', function (timingInfo) {\n                // Note that all times for [audio/video]SegmentTimingInfo events are in video clock\n                const audioSegmentTimingInfo = {\n                    start: {\n                        decode: clock$2.videoTsToSeconds(timingInfo.start.dts),\n                        presentation: clock$2.videoTsToSeconds(timingInfo.start.pts)\n                    },\n                    end: {\n                        decode: clock$2.videoTsToSeconds(timingInfo.end.dts),\n                        presentation: clock$2.videoTsToSeconds(timingInfo.end.pts)\n                    },\n                    baseMediaDecodeTime: clock$2.videoTsToSeconds(timingInfo.baseMediaDecodeTime)\n                };\n                if (timingInfo.prependedContentDuration) {\n                    audioSegmentTimingInfo.prependedContentDuration = clock$2.videoTsToSeconds(timingInfo.prependedContentDuration);\n                }\n                self.postMessage({\n                    action: 'audioSegmentTimingInfo',\n                    audioSegmentTimingInfo\n                });\n            });\n            transmuxer.on('id3Frame', function (id3Frame) {\n                self.postMessage({\n                    action: 'id3Frame',\n                    id3Frame\n                });\n            });\n            transmuxer.on('caption', function (caption) {\n                self.postMessage({\n                    action: 'caption',\n                    caption\n                });\n            });\n            transmuxer.on('trackinfo', function (trackInfo) {\n                self.postMessage({\n                    action: 'trackinfo',\n                    trackInfo\n                });\n            });\n            transmuxer.on('audioTimingInfo', function (audioTimingInfo) {\n                // convert to video TS since we prioritize video time over audio\n                self.postMessage({\n                    action: 'audioTimingInfo',\n                    audioTimingInfo: {\n                        start: clock$2.videoTsToSeconds(audioTimingInfo.start),\n                        end: clock$2.videoTsToSeconds(audioTimingInfo.end)\n                    }\n                });\n            });\n            transmuxer.on('videoTimingInfo', function (videoTimingInfo) {\n                self.postMessage({\n                    action: 'videoTimingInfo',\n                    videoTimingInfo: {\n                        start: clock$2.videoTsToSeconds(videoTimingInfo.start),\n                        end: clock$2.videoTsToSeconds(videoTimingInfo.end)\n                    }\n                });\n            });\n            transmuxer.on('log', function (log) {\n                self.postMessage({\n                    action: 'log',\n                    log\n                });\n            });\n        };\n        /**\n         * All incoming messages route through this hash. If no function exists\n         * to handle an incoming message, then we ignore the message.\n         *\n         * @class MessageHandlers\n         * @param {Object} options the options to initialize with\n         */\n\n        class MessageHandlers {\n            constructor(self, options) {\n                this.options = options || {};\n                this.self = self;\n                this.init();\n            }\n            /**\n             * initialize our web worker and wire all the events.\n             */\n\n            init() {\n                if (this.transmuxer) {\n                    this.transmuxer.dispose();\n                }\n                this.transmuxer = new transmuxer.Transmuxer(this.options);\n                wireTransmuxerEvents(this.self, this.transmuxer);\n            }\n            pushMp4Captions(data) {\n                if (!this.captionParser) {\n                    this.captionParser = new captionParser();\n                    this.captionParser.init();\n                }\n                const segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);\n                const parsed = this.captionParser.parse(segment, data.trackIds, data.timescales);\n                this.self.postMessage({\n                    action: 'mp4Captions',\n                    captions: parsed && parsed.captions || [],\n                    logs: parsed && parsed.logs || [],\n                    data: segment.buffer\n                }, [segment.buffer]);\n            }\n            probeMp4StartTime({\n                                  timescales,\n                                  data\n                              }) {\n                const startTime = probe$2.startTime(timescales, data);\n                this.self.postMessage({\n                    action: 'probeMp4StartTime',\n                    startTime,\n                    data\n                }, [data.buffer]);\n            }\n            probeMp4Tracks({\n                               data\n                           }) {\n                const tracks = probe$2.tracks(data);\n                this.self.postMessage({\n                    action: 'probeMp4Tracks',\n                    tracks,\n                    data\n                }, [data.buffer]);\n            }\n            /**\n             * Probes an mp4 segment for EMSG boxes containing ID3 data.\n             * https://aomediacodec.github.io/id3-emsg/\n             *\n             * @param {Uint8Array} data segment data\n             * @param {number} offset segment start time\n             * @return {Object[]} an array of ID3 frames\n             */\n\n            probeEmsgID3({\n                             data,\n                             offset\n                         }) {\n                const id3Frames = probe$2.getEmsgID3(data, offset);\n                this.self.postMessage({\n                    action: 'probeEmsgID3',\n                    id3Frames,\n                    emsgData: data\n                }, [data.buffer]);\n            }\n            /**\n             * Probe an mpeg2-ts segment to determine the start time of the segment in it's\n             * internal \"media time,\" as well as whether it contains video and/or audio.\n             *\n             * @private\n             * @param {Uint8Array} bytes - segment bytes\n             * @param {number} baseStartTime\n             *        Relative reference timestamp used when adjusting frame timestamps for rollover.\n             *        This value should be in seconds, as it's converted to a 90khz clock within the\n             *        function body.\n             * @return {Object} The start time of the current segment in \"media time\" as well as\n             *                  whether it contains video and/or audio\n             */\n\n            probeTs({\n                        data,\n                        baseStartTime\n                    }) {\n                const tsStartTime = typeof baseStartTime === 'number' && !isNaN(baseStartTime) ? baseStartTime * clock$2.ONE_SECOND_IN_TS : void 0;\n                const timeInfo = tsInspector.inspect(data, tsStartTime);\n                let result = null;\n                if (timeInfo) {\n                    result = {\n                        // each type's time info comes back as an array of 2 times, start and end\n                        hasVideo: timeInfo.video && timeInfo.video.length === 2 || false,\n                        hasAudio: timeInfo.audio && timeInfo.audio.length === 2 || false\n                    };\n                    if (result.hasVideo) {\n                        result.videoStart = timeInfo.video[0].ptsTime;\n                    }\n                    if (result.hasAudio) {\n                        result.audioStart = timeInfo.audio[0].ptsTime;\n                    }\n                }\n                this.self.postMessage({\n                    action: 'probeTs',\n                    result,\n                    data\n                }, [data.buffer]);\n            }\n            clearAllMp4Captions() {\n                if (this.captionParser) {\n                    this.captionParser.clearAllCaptions();\n                }\n            }\n            clearParsedMp4Captions() {\n                if (this.captionParser) {\n                    this.captionParser.clearParsedCaptions();\n                }\n            }\n            /**\n             * Adds data (a ts segment) to the start of the transmuxer pipeline for\n             * processing.\n             *\n             * @param {ArrayBuffer} data data to push into the muxer\n             */\n\n            push(data) {\n                // Cast array buffer to correct type for transmuxer\n                const segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);\n                this.transmuxer.push(segment);\n            }\n            /**\n             * Recreate the transmuxer so that the next segment added via `push`\n             * start with a fresh transmuxer.\n             */\n\n            reset() {\n                this.transmuxer.reset();\n            }\n            /**\n             * Set the value that will be used as the `baseMediaDecodeTime` time for the\n             * next segment pushed in. Subsequent segments will have their `baseMediaDecodeTime`\n             * set relative to the first based on the PTS values.\n             *\n             * @param {Object} data used to set the timestamp offset in the muxer\n             */\n\n            setTimestampOffset(data) {\n                const timestampOffset = data.timestampOffset || 0;\n                this.transmuxer.setBaseMediaDecodeTime(Math.round(clock$2.secondsToVideoTs(timestampOffset)));\n            }\n            setAudioAppendStart(data) {\n                this.transmuxer.setAudioAppendStart(Math.ceil(clock$2.secondsToVideoTs(data.appendStart)));\n            }\n            setRemux(data) {\n                this.transmuxer.setRemux(data.remux);\n            }\n            /**\n             * Forces the pipeline to finish processing the last segment and emit it's\n             * results.\n             *\n             * @param {Object} data event data, not really used\n             */\n\n            flush(data) {\n                this.transmuxer.flush(); // transmuxed done action is fired after both audio/video pipelines are flushed\n\n                self.postMessage({\n                    action: 'done',\n                    type: 'transmuxed'\n                });\n            }\n            endTimeline() {\n                this.transmuxer.endTimeline(); // transmuxed endedtimeline action is fired after both audio/video pipelines end their\n                // timelines\n\n                self.postMessage({\n                    action: 'endedtimeline',\n                    type: 'transmuxed'\n                });\n            }\n            alignGopsWith(data) {\n                this.transmuxer.alignGopsWith(data.gopsToAlignWith.slice());\n            }\n        }\n        /**\n         * Our web worker interface so that things can talk to mux.js\n         * that will be running in a web worker. the scope is passed to this by\n         * webworkify.\n         *\n         * @param {Object} self the scope for the web worker\n         */\n\n        self.onmessage = function (event) {\n            if (event.data.action === 'init' && event.data.options) {\n                this.messageHandlers = new MessageHandlers(self, event.data.options);\n                return;\n            }\n            if (!this.messageHandlers) {\n                this.messageHandlers = new MessageHandlers(self);\n            }\n            if (event.data && event.data.action && event.data.action !== 'init') {\n                if (this.messageHandlers[event.data.action]) {\n                    this.messageHandlers[event.data.action](event.data);\n                }\n            }\n        };\n    }));\n    var TransmuxWorker = factory(workerCode$1);\n    /* rollup-plugin-worker-factory end for worker!/home/runner/work/http-streaming/http-streaming/src/transmuxer-worker.js */\n\n    const handleData_ = (event, transmuxedData, callback) => {\n        const {\n            type,\n            initSegment,\n            captions,\n            captionStreams,\n            metadata,\n            videoFrameDtsTime,\n            videoFramePtsTime\n        } = event.data.segment;\n        transmuxedData.buffer.push({\n            captions,\n            captionStreams,\n            metadata\n        });\n        const boxes = event.data.segment.boxes || {\n            data: event.data.segment.data\n        };\n        const result = {\n            type,\n            // cast ArrayBuffer to TypedArray\n            data: new Uint8Array(boxes.data, boxes.data.byteOffset, boxes.data.byteLength),\n            initSegment: new Uint8Array(initSegment.data, initSegment.byteOffset, initSegment.byteLength)\n        };\n        if (typeof videoFrameDtsTime !== 'undefined') {\n            result.videoFrameDtsTime = videoFrameDtsTime;\n        }\n        if (typeof videoFramePtsTime !== 'undefined') {\n            result.videoFramePtsTime = videoFramePtsTime;\n        }\n        callback(result);\n    };\n    const handleDone_ = ({\n                             transmuxedData,\n                             callback\n                         }) => {\n        // Previously we only returned data on data events,\n        // not on done events. Clear out the buffer to keep that consistent.\n        transmuxedData.buffer = []; // all buffers should have been flushed from the muxer, so start processing anything we\n        // have received\n\n        callback(transmuxedData);\n    };\n    const handleGopInfo_ = (event, transmuxedData) => {\n        transmuxedData.gopInfo = event.data.gopInfo;\n    };\n    const processTransmux = options => {\n        const {\n            transmuxer,\n            bytes,\n            audioAppendStart,\n            gopsToAlignWith,\n            remux,\n            onData,\n            onTrackInfo,\n            onAudioTimingInfo,\n            onVideoTimingInfo,\n            onVideoSegmentTimingInfo,\n            onAudioSegmentTimingInfo,\n            onId3,\n            onCaptions,\n            onDone,\n            onEndedTimeline,\n            onTransmuxerLog,\n            isEndOfTimeline\n        } = options;\n        const transmuxedData = {\n            buffer: []\n        };\n        let waitForEndedTimelineEvent = isEndOfTimeline;\n        const handleMessage = event => {\n            if (transmuxer.currentTransmux !== options) {\n                // disposed\n                return;\n            }\n            if (event.data.action === 'data') {\n                handleData_(event, transmuxedData, onData);\n            }\n            if (event.data.action === 'trackinfo') {\n                onTrackInfo(event.data.trackInfo);\n            }\n            if (event.data.action === 'gopInfo') {\n                handleGopInfo_(event, transmuxedData);\n            }\n            if (event.data.action === 'audioTimingInfo') {\n                onAudioTimingInfo(event.data.audioTimingInfo);\n            }\n            if (event.data.action === 'videoTimingInfo') {\n                onVideoTimingInfo(event.data.videoTimingInfo);\n            }\n            if (event.data.action === 'videoSegmentTimingInfo') {\n                onVideoSegmentTimingInfo(event.data.videoSegmentTimingInfo);\n            }\n            if (event.data.action === 'audioSegmentTimingInfo') {\n                onAudioSegmentTimingInfo(event.data.audioSegmentTimingInfo);\n            }\n            if (event.data.action === 'id3Frame') {\n                onId3([event.data.id3Frame], event.data.id3Frame.dispatchType);\n            }\n            if (event.data.action === 'caption') {\n                onCaptions(event.data.caption);\n            }\n            if (event.data.action === 'endedtimeline') {\n                waitForEndedTimelineEvent = false;\n                onEndedTimeline();\n            }\n            if (event.data.action === 'log') {\n                onTransmuxerLog(event.data.log);\n            } // wait for the transmuxed event since we may have audio and video\n\n            if (event.data.type !== 'transmuxed') {\n                return;\n            } // If the \"endedtimeline\" event has not yet fired, and this segment represents the end\n            // of a timeline, that means there may still be data events before the segment\n            // processing can be considerred complete. In that case, the final event should be\n            // an \"endedtimeline\" event with the type \"transmuxed.\"\n\n            if (waitForEndedTimelineEvent) {\n                return;\n            }\n            transmuxer.onmessage = null;\n            handleDone_({\n                transmuxedData,\n                callback: onDone\n            });\n            /* eslint-disable no-use-before-define */\n\n            dequeue(transmuxer);\n            /* eslint-enable */\n        };\n\n        transmuxer.onmessage = handleMessage;\n        if (audioAppendStart) {\n            transmuxer.postMessage({\n                action: 'setAudioAppendStart',\n                appendStart: audioAppendStart\n            });\n        } // allow empty arrays to be passed to clear out GOPs\n\n        if (Array.isArray(gopsToAlignWith)) {\n            transmuxer.postMessage({\n                action: 'alignGopsWith',\n                gopsToAlignWith\n            });\n        }\n        if (typeof remux !== 'undefined') {\n            transmuxer.postMessage({\n                action: 'setRemux',\n                remux\n            });\n        }\n        if (bytes.byteLength) {\n            const buffer = bytes instanceof ArrayBuffer ? bytes : bytes.buffer;\n            const byteOffset = bytes instanceof ArrayBuffer ? 0 : bytes.byteOffset;\n            transmuxer.postMessage({\n                action: 'push',\n                // Send the typed-array of data as an ArrayBuffer so that\n                // it can be sent as a \"Transferable\" and avoid the costly\n                // memory copy\n                data: buffer,\n                // To recreate the original typed-array, we need information\n                // about what portion of the ArrayBuffer it was a view into\n                byteOffset,\n                byteLength: bytes.byteLength\n            }, [buffer]);\n        }\n        if (isEndOfTimeline) {\n            transmuxer.postMessage({\n                action: 'endTimeline'\n            });\n        } // even if we didn't push any bytes, we have to make sure we flush in case we reached\n        // the end of the segment\n\n        transmuxer.postMessage({\n            action: 'flush'\n        });\n    };\n    const dequeue = transmuxer => {\n        transmuxer.currentTransmux = null;\n        if (transmuxer.transmuxQueue.length) {\n            transmuxer.currentTransmux = transmuxer.transmuxQueue.shift();\n            if (typeof transmuxer.currentTransmux === 'function') {\n                transmuxer.currentTransmux();\n            } else {\n                processTransmux(transmuxer.currentTransmux);\n            }\n        }\n    };\n    const processAction = (transmuxer, action) => {\n        transmuxer.postMessage({\n            action\n        });\n        dequeue(transmuxer);\n    };\n    const enqueueAction = (action, transmuxer) => {\n        if (!transmuxer.currentTransmux) {\n            transmuxer.currentTransmux = action;\n            processAction(transmuxer, action);\n            return;\n        }\n        transmuxer.transmuxQueue.push(processAction.bind(null, transmuxer, action));\n    };\n    const reset = transmuxer => {\n        enqueueAction('reset', transmuxer);\n    };\n    const endTimeline = transmuxer => {\n        enqueueAction('endTimeline', transmuxer);\n    };\n    const transmux = options => {\n        if (!options.transmuxer.currentTransmux) {\n            options.transmuxer.currentTransmux = options;\n            processTransmux(options);\n            return;\n        }\n        options.transmuxer.transmuxQueue.push(options);\n    };\n    const createTransmuxer = options => {\n        const transmuxer = new TransmuxWorker();\n        transmuxer.currentTransmux = null;\n        transmuxer.transmuxQueue = [];\n        const term = transmuxer.terminate;\n        transmuxer.terminate = () => {\n            transmuxer.currentTransmux = null;\n            transmuxer.transmuxQueue.length = 0;\n            return term.call(transmuxer);\n        };\n        transmuxer.postMessage({\n            action: 'init',\n            options\n        });\n        return transmuxer;\n    };\n    var segmentTransmuxer = {\n        reset,\n        endTimeline,\n        transmux,\n        createTransmuxer\n    };\n    const workerCallback = function (options) {\n        const transmuxer = options.transmuxer;\n        const endAction = options.endAction || options.action;\n        const callback = options.callback;\n        const message = _extends$1({}, options, {\n            endAction: null,\n            transmuxer: null,\n            callback: null\n        });\n        const listenForEndEvent = event => {\n            if (event.data.action !== endAction) {\n                return;\n            }\n            transmuxer.removeEventListener('message', listenForEndEvent); // transfer ownership of bytes back to us.\n\n            if (event.data.data) {\n                event.data.data = new Uint8Array(event.data.data, options.byteOffset || 0, options.byteLength || event.data.data.byteLength);\n                if (options.data) {\n                    options.data = event.data.data;\n                }\n            }\n            callback(event.data);\n        };\n        transmuxer.addEventListener('message', listenForEndEvent);\n        if (options.data) {\n            const isArrayBuffer = options.data instanceof ArrayBuffer;\n            message.byteOffset = isArrayBuffer ? 0 : options.data.byteOffset;\n            message.byteLength = options.data.byteLength;\n            const transfers = [isArrayBuffer ? options.data : options.data.buffer];\n            transmuxer.postMessage(message, transfers);\n        } else {\n            transmuxer.postMessage(message);\n        }\n    };\n    const REQUEST_ERRORS = {\n        FAILURE: 2,\n        TIMEOUT: -101,\n        ABORTED: -102\n    };\n    /**\n     * Abort all requests\n     *\n     * @param {Object} activeXhrs - an object that tracks all XHR requests\n     */\n\n    const abortAll = activeXhrs => {\n        activeXhrs.forEach(xhr => {\n            xhr.abort();\n        });\n    };\n    /**\n     * Gather important bandwidth stats once a request has completed\n     *\n     * @param {Object} request - the XHR request from which to gather stats\n     */\n\n    const getRequestStats = request => {\n        return {\n            bandwidth: request.bandwidth,\n            bytesReceived: request.bytesReceived || 0,\n            roundTripTime: request.roundTripTime || 0\n        };\n    };\n    /**\n     * If possible gather bandwidth stats as a request is in\n     * progress\n     *\n     * @param {Event} progressEvent - an event object from an XHR's progress event\n     */\n\n    const getProgressStats = progressEvent => {\n        const request = progressEvent.target;\n        const roundTripTime = Date.now() - request.requestTime;\n        const stats = {\n            bandwidth: Infinity,\n            bytesReceived: 0,\n            roundTripTime: roundTripTime || 0\n        };\n        stats.bytesReceived = progressEvent.loaded; // This can result in Infinity if stats.roundTripTime is 0 but that is ok\n        // because we should only use bandwidth stats on progress to determine when\n        // abort a request early due to insufficient bandwidth\n\n        stats.bandwidth = Math.floor(stats.bytesReceived / stats.roundTripTime * 8 * 1000);\n        return stats;\n    };\n    /**\n     * Handle all error conditions in one place and return an object\n     * with all the information\n     *\n     * @param {Error|null} error - if non-null signals an error occured with the XHR\n     * @param {Object} request -  the XHR request that possibly generated the error\n     */\n\n    const handleErrors = (error, request) => {\n        if (request.timedout) {\n            return {\n                status: request.status,\n                message: 'HLS request timed-out at URL: ' + request.uri,\n                code: REQUEST_ERRORS.TIMEOUT,\n                xhr: request\n            };\n        }\n        if (request.aborted) {\n            return {\n                status: request.status,\n                message: 'HLS request aborted at URL: ' + request.uri,\n                code: REQUEST_ERRORS.ABORTED,\n                xhr: request\n            };\n        }\n        if (error) {\n            return {\n                status: request.status,\n                message: 'HLS request errored at URL: ' + request.uri,\n                code: REQUEST_ERRORS.FAILURE,\n                xhr: request\n            };\n        }\n        if (request.responseType === 'arraybuffer' && request.response.byteLength === 0) {\n            return {\n                status: request.status,\n                message: 'Empty HLS response at URL: ' + request.uri,\n                code: REQUEST_ERRORS.FAILURE,\n                xhr: request\n            };\n        }\n        return null;\n    };\n    /**\n     * Handle responses for key data and convert the key data to the correct format\n     * for the decryption step later\n     *\n     * @param {Object} segment - a simplified copy of the segmentInfo object\n     *                           from SegmentLoader\n     * @param {Array} objects - objects to add the key bytes to.\n     * @param {Function} finishProcessingFn - a callback to execute to continue processing\n     *                                        this request\n     */\n\n    const handleKeyResponse = (segment, objects, finishProcessingFn) => (error, request) => {\n        const response = request.response;\n        const errorObj = handleErrors(error, request);\n        if (errorObj) {\n            return finishProcessingFn(errorObj, segment);\n        }\n        if (response.byteLength !== 16) {\n            return finishProcessingFn({\n                status: request.status,\n                message: 'Invalid HLS key at URL: ' + request.uri,\n                code: REQUEST_ERRORS.FAILURE,\n                xhr: request\n            }, segment);\n        }\n        const view = new DataView(response);\n        const bytes = new Uint32Array([view.getUint32(0), view.getUint32(4), view.getUint32(8), view.getUint32(12)]);\n        for (let i = 0; i < objects.length; i++) {\n            objects[i].bytes = bytes;\n        }\n        return finishProcessingFn(null, segment);\n    };\n    const parseInitSegment = (segment, callback) => {\n        const type = detectContainerForBytes(segment.map.bytes); // TODO: We should also handle ts init segments here, but we\n        // only know how to parse mp4 init segments at the moment\n\n        if (type !== 'mp4') {\n            const uri = segment.map.resolvedUri || segment.map.uri;\n            return callback({\n                internal: true,\n                message: `Found unsupported ${type || 'unknown'} container for initialization segment at URL: ${uri}`,\n                code: REQUEST_ERRORS.FAILURE\n            });\n        }\n        workerCallback({\n            action: 'probeMp4Tracks',\n            data: segment.map.bytes,\n            transmuxer: segment.transmuxer,\n            callback: ({\n                           tracks,\n                           data\n                       }) => {\n                // transfer bytes back to us\n                segment.map.bytes = data;\n                tracks.forEach(function (track) {\n                    segment.map.tracks = segment.map.tracks || {}; // only support one track of each type for now\n\n                    if (segment.map.tracks[track.type]) {\n                        return;\n                    }\n                    segment.map.tracks[track.type] = track;\n                    if (typeof track.id === 'number' && track.timescale) {\n                        segment.map.timescales = segment.map.timescales || {};\n                        segment.map.timescales[track.id] = track.timescale;\n                    }\n                });\n                return callback(null);\n            }\n        });\n    };\n    /**\n     * Handle init-segment responses\n     *\n     * @param {Object} segment - a simplified copy of the segmentInfo object\n     *                           from SegmentLoader\n     * @param {Function} finishProcessingFn - a callback to execute to continue processing\n     *                                        this request\n     */\n\n    const handleInitSegmentResponse = ({\n                                           segment,\n                                           finishProcessingFn\n                                       }) => (error, request) => {\n        const errorObj = handleErrors(error, request);\n        if (errorObj) {\n            return finishProcessingFn(errorObj, segment);\n        }\n        const bytes = new Uint8Array(request.response); // init segment is encypted, we will have to wait\n        // until the key request is done to decrypt.\n\n        if (segment.map.key) {\n            segment.map.encryptedBytes = bytes;\n            return finishProcessingFn(null, segment);\n        }\n        segment.map.bytes = bytes;\n        parseInitSegment(segment, function (parseError) {\n            if (parseError) {\n                parseError.xhr = request;\n                parseError.status = request.status;\n                return finishProcessingFn(parseError, segment);\n            }\n            finishProcessingFn(null, segment);\n        });\n    };\n    /**\n     * Response handler for segment-requests being sure to set the correct\n     * property depending on whether the segment is encryped or not\n     * Also records and keeps track of stats that are used for ABR purposes\n     *\n     * @param {Object} segment - a simplified copy of the segmentInfo object\n     *                           from SegmentLoader\n     * @param {Function} finishProcessingFn - a callback to execute to continue processing\n     *                                        this request\n     */\n\n    const handleSegmentResponse = ({\n                                       segment,\n                                       finishProcessingFn,\n                                       responseType\n                                   }) => (error, request) => {\n        const errorObj = handleErrors(error, request);\n        if (errorObj) {\n            return finishProcessingFn(errorObj, segment);\n        }\n        const newBytes =\n            // although responseText \"should\" exist, this guard serves to prevent an error being\n            // thrown for two primary cases:\n            // 1. the mime type override stops working, or is not implemented for a specific\n            //    browser\n            // 2. when using mock XHR libraries like sinon that do not allow the override behavior\n            responseType === 'arraybuffer' || !request.responseText ? request.response : stringToArrayBuffer(request.responseText.substring(segment.lastReachedChar || 0));\n        segment.stats = getRequestStats(request);\n        if (segment.key) {\n            segment.encryptedBytes = new Uint8Array(newBytes);\n        } else {\n            segment.bytes = new Uint8Array(newBytes);\n        }\n        return finishProcessingFn(null, segment);\n    };\n    const transmuxAndNotify = ({\n                                   segment,\n                                   bytes,\n                                   trackInfoFn,\n                                   timingInfoFn,\n                                   videoSegmentTimingInfoFn,\n                                   audioSegmentTimingInfoFn,\n                                   id3Fn,\n                                   captionsFn,\n                                   isEndOfTimeline,\n                                   endedTimelineFn,\n                                   dataFn,\n                                   doneFn,\n                                   onTransmuxerLog\n                               }) => {\n        const fmp4Tracks = segment.map && segment.map.tracks || {};\n        const isMuxed = Boolean(fmp4Tracks.audio && fmp4Tracks.video); // Keep references to each function so we can null them out after we're done with them.\n        // One reason for this is that in the case of full segments, we want to trust start\n        // times from the probe, rather than the transmuxer.\n\n        let audioStartFn = timingInfoFn.bind(null, segment, 'audio', 'start');\n        const audioEndFn = timingInfoFn.bind(null, segment, 'audio', 'end');\n        let videoStartFn = timingInfoFn.bind(null, segment, 'video', 'start');\n        const videoEndFn = timingInfoFn.bind(null, segment, 'video', 'end');\n        const finish = () => transmux({\n            bytes,\n            transmuxer: segment.transmuxer,\n            audioAppendStart: segment.audioAppendStart,\n            gopsToAlignWith: segment.gopsToAlignWith,\n            remux: isMuxed,\n            onData: result => {\n                result.type = result.type === 'combined' ? 'video' : result.type;\n                dataFn(segment, result);\n            },\n            onTrackInfo: trackInfo => {\n                if (trackInfoFn) {\n                    if (isMuxed) {\n                        trackInfo.isMuxed = true;\n                    }\n                    trackInfoFn(segment, trackInfo);\n                }\n            },\n            onAudioTimingInfo: audioTimingInfo => {\n                // we only want the first start value we encounter\n                if (audioStartFn && typeof audioTimingInfo.start !== 'undefined') {\n                    audioStartFn(audioTimingInfo.start);\n                    audioStartFn = null;\n                } // we want to continually update the end time\n\n                if (audioEndFn && typeof audioTimingInfo.end !== 'undefined') {\n                    audioEndFn(audioTimingInfo.end);\n                }\n            },\n            onVideoTimingInfo: videoTimingInfo => {\n                // we only want the first start value we encounter\n                if (videoStartFn && typeof videoTimingInfo.start !== 'undefined') {\n                    videoStartFn(videoTimingInfo.start);\n                    videoStartFn = null;\n                } // we want to continually update the end time\n\n                if (videoEndFn && typeof videoTimingInfo.end !== 'undefined') {\n                    videoEndFn(videoTimingInfo.end);\n                }\n            },\n            onVideoSegmentTimingInfo: videoSegmentTimingInfo => {\n                videoSegmentTimingInfoFn(videoSegmentTimingInfo);\n            },\n            onAudioSegmentTimingInfo: audioSegmentTimingInfo => {\n                audioSegmentTimingInfoFn(audioSegmentTimingInfo);\n            },\n            onId3: (id3Frames, dispatchType) => {\n                id3Fn(segment, id3Frames, dispatchType);\n            },\n            onCaptions: captions => {\n                captionsFn(segment, [captions]);\n            },\n            isEndOfTimeline,\n            onEndedTimeline: () => {\n                endedTimelineFn();\n            },\n            onTransmuxerLog,\n            onDone: result => {\n                if (!doneFn) {\n                    return;\n                }\n                result.type = result.type === 'combined' ? 'video' : result.type;\n                doneFn(null, segment, result);\n            }\n        }); // In the transmuxer, we don't yet have the ability to extract a \"proper\" start time.\n        // Meaning cached frame data may corrupt our notion of where this segment\n        // really starts. To get around this, probe for the info needed.\n\n        workerCallback({\n            action: 'probeTs',\n            transmuxer: segment.transmuxer,\n            data: bytes,\n            baseStartTime: segment.baseStartTime,\n            callback: data => {\n                segment.bytes = bytes = data.data;\n                const probeResult = data.result;\n                if (probeResult) {\n                    trackInfoFn(segment, {\n                        hasAudio: probeResult.hasAudio,\n                        hasVideo: probeResult.hasVideo,\n                        isMuxed\n                    });\n                    trackInfoFn = null;\n                }\n                finish();\n            }\n        });\n    };\n    const handleSegmentBytes = ({\n                                    segment,\n                                    bytes,\n                                    trackInfoFn,\n                                    timingInfoFn,\n                                    videoSegmentTimingInfoFn,\n                                    audioSegmentTimingInfoFn,\n                                    id3Fn,\n                                    captionsFn,\n                                    isEndOfTimeline,\n                                    endedTimelineFn,\n                                    dataFn,\n                                    doneFn,\n                                    onTransmuxerLog\n                                }) => {\n        let bytesAsUint8Array = new Uint8Array(bytes); // TODO:\n        // We should have a handler that fetches the number of bytes required\n        // to check if something is fmp4. This will allow us to save bandwidth\n        // because we can only exclude a playlist and abort requests\n        // by codec after trackinfo triggers.\n\n        if (isLikelyFmp4MediaSegment(bytesAsUint8Array)) {\n            segment.isFmp4 = true;\n            const {\n                tracks\n            } = segment.map;\n            const trackInfo = {\n                isFmp4: true,\n                hasVideo: !!tracks.video,\n                hasAudio: !!tracks.audio\n            }; // if we have a audio track, with a codec that is not set to\n            // encrypted audio\n\n            if (tracks.audio && tracks.audio.codec && tracks.audio.codec !== 'enca') {\n                trackInfo.audioCodec = tracks.audio.codec;\n            } // if we have a video track, with a codec that is not set to\n            // encrypted video\n\n            if (tracks.video && tracks.video.codec && tracks.video.codec !== 'encv') {\n                trackInfo.videoCodec = tracks.video.codec;\n            }\n            if (tracks.video && tracks.audio) {\n                trackInfo.isMuxed = true;\n            } // since we don't support appending fmp4 data on progress, we know we have the full\n            // segment here\n\n            trackInfoFn(segment, trackInfo); // The probe doesn't provide the segment end time, so only callback with the start\n            // time. The end time can be roughly calculated by the receiver using the duration.\n            //\n            // Note that the start time returned by the probe reflects the baseMediaDecodeTime, as\n            // that is the true start of the segment (where the playback engine should begin\n            // decoding).\n\n            const finishLoading = (captions, id3Frames) => {\n                // if the track still has audio at this point it is only possible\n                // for it to be audio only. See `tracks.video && tracks.audio` if statement\n                // above.\n                // we make sure to use segment.bytes here as that\n                dataFn(segment, {\n                    data: bytesAsUint8Array,\n                    type: trackInfo.hasAudio && !trackInfo.isMuxed ? 'audio' : 'video'\n                });\n                if (id3Frames && id3Frames.length) {\n                    id3Fn(segment, id3Frames);\n                }\n                if (captions && captions.length) {\n                    captionsFn(segment, captions);\n                }\n                doneFn(null, segment, {});\n            };\n            workerCallback({\n                action: 'probeMp4StartTime',\n                timescales: segment.map.timescales,\n                data: bytesAsUint8Array,\n                transmuxer: segment.transmuxer,\n                callback: ({\n                               data,\n                               startTime\n                           }) => {\n                    // transfer bytes back to us\n                    bytes = data.buffer;\n                    segment.bytes = bytesAsUint8Array = data;\n                    if (trackInfo.hasAudio && !trackInfo.isMuxed) {\n                        timingInfoFn(segment, 'audio', 'start', startTime);\n                    }\n                    if (trackInfo.hasVideo) {\n                        timingInfoFn(segment, 'video', 'start', startTime);\n                    }\n                    workerCallback({\n                        action: 'probeEmsgID3',\n                        data: bytesAsUint8Array,\n                        transmuxer: segment.transmuxer,\n                        offset: startTime,\n                        callback: ({\n                                       emsgData,\n                                       id3Frames\n                                   }) => {\n                            // transfer bytes back to us\n                            bytes = emsgData.buffer;\n                            segment.bytes = bytesAsUint8Array = emsgData; // Run through the CaptionParser in case there are captions.\n                            // Initialize CaptionParser if it hasn't been yet\n\n                            if (!tracks.video || !emsgData.byteLength || !segment.transmuxer) {\n                                finishLoading(undefined, id3Frames);\n                                return;\n                            }\n                            workerCallback({\n                                action: 'pushMp4Captions',\n                                endAction: 'mp4Captions',\n                                transmuxer: segment.transmuxer,\n                                data: bytesAsUint8Array,\n                                timescales: segment.map.timescales,\n                                trackIds: [tracks.video.id],\n                                callback: message => {\n                                    // transfer bytes back to us\n                                    bytes = message.data.buffer;\n                                    segment.bytes = bytesAsUint8Array = message.data;\n                                    message.logs.forEach(function (log) {\n                                        onTransmuxerLog(merge(log, {\n                                            stream: 'mp4CaptionParser'\n                                        }));\n                                    });\n                                    finishLoading(message.captions, id3Frames);\n                                }\n                            });\n                        }\n                    });\n                }\n            });\n            return;\n        } // VTT or other segments that don't need processing\n\n        if (!segment.transmuxer) {\n            doneFn(null, segment, {});\n            return;\n        }\n        if (typeof segment.container === 'undefined') {\n            segment.container = detectContainerForBytes(bytesAsUint8Array);\n        }\n        if (segment.container !== 'ts' && segment.container !== 'aac') {\n            trackInfoFn(segment, {\n                hasAudio: false,\n                hasVideo: false\n            });\n            doneFn(null, segment, {});\n            return;\n        } // ts or aac\n\n        transmuxAndNotify({\n            segment,\n            bytes,\n            trackInfoFn,\n            timingInfoFn,\n            videoSegmentTimingInfoFn,\n            audioSegmentTimingInfoFn,\n            id3Fn,\n            captionsFn,\n            isEndOfTimeline,\n            endedTimelineFn,\n            dataFn,\n            doneFn,\n            onTransmuxerLog\n        });\n    };\n    const decrypt = function ({\n                                  id,\n                                  key,\n                                  encryptedBytes,\n                                  decryptionWorker\n                              }, callback) {\n        const decryptionHandler = event => {\n            if (event.data.source === id) {\n                decryptionWorker.removeEventListener('message', decryptionHandler);\n                const decrypted = event.data.decrypted;\n                callback(new Uint8Array(decrypted.bytes, decrypted.byteOffset, decrypted.byteLength));\n            }\n        };\n        decryptionWorker.addEventListener('message', decryptionHandler);\n        let keyBytes;\n        if (key.bytes.slice) {\n            keyBytes = key.bytes.slice();\n        } else {\n            keyBytes = new Uint32Array(Array.prototype.slice.call(key.bytes));\n        } // incrementally decrypt the bytes\n\n        decryptionWorker.postMessage(createTransferableMessage({\n            source: id,\n            encrypted: encryptedBytes,\n            key: keyBytes,\n            iv: key.iv\n        }), [encryptedBytes.buffer, keyBytes.buffer]);\n    };\n    /**\n     * Decrypt the segment via the decryption web worker\n     *\n     * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128 decryption\n     *                                       routines\n     * @param {Object} segment - a simplified copy of the segmentInfo object\n     *                           from SegmentLoader\n     * @param {Function} trackInfoFn - a callback that receives track info\n     * @param {Function} timingInfoFn - a callback that receives timing info\n     * @param {Function} videoSegmentTimingInfoFn\n     *                   a callback that receives video timing info based on media times and\n     *                   any adjustments made by the transmuxer\n     * @param {Function} audioSegmentTimingInfoFn\n     *                   a callback that receives audio timing info based on media times and\n     *                   any adjustments made by the transmuxer\n     * @param {boolean}  isEndOfTimeline\n     *                   true if this segment represents the last segment in a timeline\n     * @param {Function} endedTimelineFn\n     *                   a callback made when a timeline is ended, will only be called if\n     *                   isEndOfTimeline is true\n     * @param {Function} dataFn - a callback that is executed when segment bytes are available\n     *                            and ready to use\n     * @param {Function} doneFn - a callback that is executed after decryption has completed\n     */\n\n    const decryptSegment = ({\n                                decryptionWorker,\n                                segment,\n                                trackInfoFn,\n                                timingInfoFn,\n                                videoSegmentTimingInfoFn,\n                                audioSegmentTimingInfoFn,\n                                id3Fn,\n                                captionsFn,\n                                isEndOfTimeline,\n                                endedTimelineFn,\n                                dataFn,\n                                doneFn,\n                                onTransmuxerLog\n                            }) => {\n        decrypt({\n            id: segment.requestId,\n            key: segment.key,\n            encryptedBytes: segment.encryptedBytes,\n            decryptionWorker\n        }, decryptedBytes => {\n            segment.bytes = decryptedBytes;\n            handleSegmentBytes({\n                segment,\n                bytes: segment.bytes,\n                trackInfoFn,\n                timingInfoFn,\n                videoSegmentTimingInfoFn,\n                audioSegmentTimingInfoFn,\n                id3Fn,\n                captionsFn,\n                isEndOfTimeline,\n                endedTimelineFn,\n                dataFn,\n                doneFn,\n                onTransmuxerLog\n            });\n        });\n    };\n    /**\n     * This function waits for all XHRs to finish (with either success or failure)\n     * before continueing processing via it's callback. The function gathers errors\n     * from each request into a single errors array so that the error status for\n     * each request can be examined later.\n     *\n     * @param {Object} activeXhrs - an object that tracks all XHR requests\n     * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128 decryption\n     *                                       routines\n     * @param {Function} trackInfoFn - a callback that receives track info\n     * @param {Function} timingInfoFn - a callback that receives timing info\n     * @param {Function} videoSegmentTimingInfoFn\n     *                   a callback that receives video timing info based on media times and\n     *                   any adjustments made by the transmuxer\n     * @param {Function} audioSegmentTimingInfoFn\n     *                   a callback that receives audio timing info based on media times and\n     *                   any adjustments made by the transmuxer\n     * @param {Function} id3Fn - a callback that receives ID3 metadata\n     * @param {Function} captionsFn - a callback that receives captions\n     * @param {boolean}  isEndOfTimeline\n     *                   true if this segment represents the last segment in a timeline\n     * @param {Function} endedTimelineFn\n     *                   a callback made when a timeline is ended, will only be called if\n     *                   isEndOfTimeline is true\n     * @param {Function} dataFn - a callback that is executed when segment bytes are available\n     *                            and ready to use\n     * @param {Function} doneFn - a callback that is executed after all resources have been\n     *                            downloaded and any decryption completed\n     */\n\n    const waitForCompletion = ({\n                                   activeXhrs,\n                                   decryptionWorker,\n                                   trackInfoFn,\n                                   timingInfoFn,\n                                   videoSegmentTimingInfoFn,\n                                   audioSegmentTimingInfoFn,\n                                   id3Fn,\n                                   captionsFn,\n                                   isEndOfTimeline,\n                                   endedTimelineFn,\n                                   dataFn,\n                                   doneFn,\n                                   onTransmuxerLog\n                               }) => {\n        let count = 0;\n        let didError = false;\n        return (error, segment) => {\n            if (didError) {\n                return;\n            }\n            if (error) {\n                didError = true; // If there are errors, we have to abort any outstanding requests\n\n                abortAll(activeXhrs); // Even though the requests above are aborted, and in theory we could wait until we\n                // handle the aborted events from those requests, there are some cases where we may\n                // never get an aborted event. For instance, if the network connection is lost and\n                // there were two requests, the first may have triggered an error immediately, while\n                // the second request remains unsent. In that case, the aborted algorithm will not\n                // trigger an abort: see https://xhr.spec.whatwg.org/#the-abort()-method\n                //\n                // We also can't rely on the ready state of the XHR, since the request that\n                // triggered the connection error may also show as a ready state of 0 (unsent).\n                // Therefore, we have to finish this group of requests immediately after the first\n                // seen error.\n\n                return doneFn(error, segment);\n            }\n            count += 1;\n            if (count === activeXhrs.length) {\n                const segmentFinish = function () {\n                    if (segment.encryptedBytes) {\n                        return decryptSegment({\n                            decryptionWorker,\n                            segment,\n                            trackInfoFn,\n                            timingInfoFn,\n                            videoSegmentTimingInfoFn,\n                            audioSegmentTimingInfoFn,\n                            id3Fn,\n                            captionsFn,\n                            isEndOfTimeline,\n                            endedTimelineFn,\n                            dataFn,\n                            doneFn,\n                            onTransmuxerLog\n                        });\n                    } // Otherwise, everything is ready just continue\n\n                    handleSegmentBytes({\n                        segment,\n                        bytes: segment.bytes,\n                        trackInfoFn,\n                        timingInfoFn,\n                        videoSegmentTimingInfoFn,\n                        audioSegmentTimingInfoFn,\n                        id3Fn,\n                        captionsFn,\n                        isEndOfTimeline,\n                        endedTimelineFn,\n                        dataFn,\n                        doneFn,\n                        onTransmuxerLog\n                    });\n                }; // Keep track of when *all* of the requests have completed\n\n                segment.endOfAllRequests = Date.now();\n                if (segment.map && segment.map.encryptedBytes && !segment.map.bytes) {\n                    return decrypt({\n                        decryptionWorker,\n                        // add -init to the \"id\" to differentiate between segment\n                        // and init segment decryption, just in case they happen\n                        // at the same time at some point in the future.\n                        id: segment.requestId + '-init',\n                        encryptedBytes: segment.map.encryptedBytes,\n                        key: segment.map.key\n                    }, decryptedBytes => {\n                        segment.map.bytes = decryptedBytes;\n                        parseInitSegment(segment, parseError => {\n                            if (parseError) {\n                                abortAll(activeXhrs);\n                                return doneFn(parseError, segment);\n                            }\n                            segmentFinish();\n                        });\n                    });\n                }\n                segmentFinish();\n            }\n        };\n    };\n    /**\n     * Calls the abort callback if any request within the batch was aborted. Will only call\n     * the callback once per batch of requests, even if multiple were aborted.\n     *\n     * @param {Object} loadendState - state to check to see if the abort function was called\n     * @param {Function} abortFn - callback to call for abort\n     */\n\n    const handleLoadEnd = ({\n                               loadendState,\n                               abortFn\n                           }) => event => {\n        const request = event.target;\n        if (request.aborted && abortFn && !loadendState.calledAbortFn) {\n            abortFn();\n            loadendState.calledAbortFn = true;\n        }\n    };\n    /**\n     * Simple progress event callback handler that gathers some stats before\n     * executing a provided callback with the `segment` object\n     *\n     * @param {Object} segment - a simplified copy of the segmentInfo object\n     *                           from SegmentLoader\n     * @param {Function} progressFn - a callback that is executed each time a progress event\n     *                                is received\n     * @param {Function} trackInfoFn - a callback that receives track info\n     * @param {Function} timingInfoFn - a callback that receives timing info\n     * @param {Function} videoSegmentTimingInfoFn\n     *                   a callback that receives video timing info based on media times and\n     *                   any adjustments made by the transmuxer\n     * @param {Function} audioSegmentTimingInfoFn\n     *                   a callback that receives audio timing info based on media times and\n     *                   any adjustments made by the transmuxer\n     * @param {boolean}  isEndOfTimeline\n     *                   true if this segment represents the last segment in a timeline\n     * @param {Function} endedTimelineFn\n     *                   a callback made when a timeline is ended, will only be called if\n     *                   isEndOfTimeline is true\n     * @param {Function} dataFn - a callback that is executed when segment bytes are available\n     *                            and ready to use\n     * @param {Event} event - the progress event object from XMLHttpRequest\n     */\n\n    const handleProgress = ({\n                                segment,\n                                progressFn,\n                                trackInfoFn,\n                                timingInfoFn,\n                                videoSegmentTimingInfoFn,\n                                audioSegmentTimingInfoFn,\n                                id3Fn,\n                                captionsFn,\n                                isEndOfTimeline,\n                                endedTimelineFn,\n                                dataFn\n                            }) => event => {\n        const request = event.target;\n        if (request.aborted) {\n            return;\n        }\n        segment.stats = merge(segment.stats, getProgressStats(event)); // record the time that we receive the first byte of data\n\n        if (!segment.stats.firstBytesReceivedAt && segment.stats.bytesReceived) {\n            segment.stats.firstBytesReceivedAt = Date.now();\n        }\n        return progressFn(event, segment);\n    };\n    /**\n     * Load all resources and does any processing necessary for a media-segment\n     *\n     * Features:\n     *   decrypts the media-segment if it has a key uri and an iv\n     *   aborts *all* requests if *any* one request fails\n     *\n     * The segment object, at minimum, has the following format:\n     * {\n     *   resolvedUri: String,\n     *   [transmuxer]: Object,\n     *   [byterange]: {\n     *     offset: Number,\n     *     length: Number\n     *   },\n     *   [key]: {\n     *     resolvedUri: String\n     *     [byterange]: {\n     *       offset: Number,\n     *       length: Number\n     *     },\n     *     iv: {\n     *       bytes: Uint32Array\n     *     }\n     *   },\n     *   [map]: {\n     *     resolvedUri: String,\n     *     [byterange]: {\n     *       offset: Number,\n     *       length: Number\n     *     },\n     *     [bytes]: Uint8Array\n     *   }\n     * }\n     * ...where [name] denotes optional properties\n     *\n     * @param {Function} xhr - an instance of the xhr wrapper in xhr.js\n     * @param {Object} xhrOptions - the base options to provide to all xhr requests\n     * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128\n     *                                       decryption routines\n     * @param {Object} segment - a simplified copy of the segmentInfo object\n     *                           from SegmentLoader\n     * @param {Function} abortFn - a callback called (only once) if any piece of a request was\n     *                             aborted\n     * @param {Function} progressFn - a callback that receives progress events from the main\n     *                                segment's xhr request\n     * @param {Function} trackInfoFn - a callback that receives track info\n     * @param {Function} timingInfoFn - a callback that receives timing info\n     * @param {Function} videoSegmentTimingInfoFn\n     *                   a callback that receives video timing info based on media times and\n     *                   any adjustments made by the transmuxer\n     * @param {Function} audioSegmentTimingInfoFn\n     *                   a callback that receives audio timing info based on media times and\n     *                   any adjustments made by the transmuxer\n     * @param {Function} id3Fn - a callback that receives ID3 metadata\n     * @param {Function} captionsFn - a callback that receives captions\n     * @param {boolean}  isEndOfTimeline\n     *                   true if this segment represents the last segment in a timeline\n     * @param {Function} endedTimelineFn\n     *                   a callback made when a timeline is ended, will only be called if\n     *                   isEndOfTimeline is true\n     * @param {Function} dataFn - a callback that receives data from the main segment's xhr\n     *                            request, transmuxed if needed\n     * @param {Function} doneFn - a callback that is executed only once all requests have\n     *                            succeeded or failed\n     * @return {Function} a function that, when invoked, immediately aborts all\n     *                     outstanding requests\n     */\n\n    const mediaSegmentRequest = ({\n                                     xhr,\n                                     xhrOptions,\n                                     decryptionWorker,\n                                     segment,\n                                     abortFn,\n                                     progressFn,\n                                     trackInfoFn,\n                                     timingInfoFn,\n                                     videoSegmentTimingInfoFn,\n                                     audioSegmentTimingInfoFn,\n                                     id3Fn,\n                                     captionsFn,\n                                     isEndOfTimeline,\n                                     endedTimelineFn,\n                                     dataFn,\n                                     doneFn,\n                                     onTransmuxerLog\n                                 }) => {\n        const activeXhrs = [];\n        const finishProcessingFn = waitForCompletion({\n            activeXhrs,\n            decryptionWorker,\n            trackInfoFn,\n            timingInfoFn,\n            videoSegmentTimingInfoFn,\n            audioSegmentTimingInfoFn,\n            id3Fn,\n            captionsFn,\n            isEndOfTimeline,\n            endedTimelineFn,\n            dataFn,\n            doneFn,\n            onTransmuxerLog\n        }); // optionally, request the decryption key\n\n        if (segment.key && !segment.key.bytes) {\n            const objects = [segment.key];\n            if (segment.map && !segment.map.bytes && segment.map.key && segment.map.key.resolvedUri === segment.key.resolvedUri) {\n                objects.push(segment.map.key);\n            }\n            const keyRequestOptions = merge(xhrOptions, {\n                uri: segment.key.resolvedUri,\n                responseType: 'arraybuffer'\n            });\n            const keyRequestCallback = handleKeyResponse(segment, objects, finishProcessingFn);\n            const keyXhr = xhr(keyRequestOptions, keyRequestCallback);\n            activeXhrs.push(keyXhr);\n        } // optionally, request the associated media init segment\n\n        if (segment.map && !segment.map.bytes) {\n            const differentMapKey = segment.map.key && (!segment.key || segment.key.resolvedUri !== segment.map.key.resolvedUri);\n            if (differentMapKey) {\n                const mapKeyRequestOptions = merge(xhrOptions, {\n                    uri: segment.map.key.resolvedUri,\n                    responseType: 'arraybuffer'\n                });\n                const mapKeyRequestCallback = handleKeyResponse(segment, [segment.map.key], finishProcessingFn);\n                const mapKeyXhr = xhr(mapKeyRequestOptions, mapKeyRequestCallback);\n                activeXhrs.push(mapKeyXhr);\n            }\n            const initSegmentOptions = merge(xhrOptions, {\n                uri: segment.map.resolvedUri,\n                responseType: 'arraybuffer',\n                headers: segmentXhrHeaders(segment.map)\n            });\n            const initSegmentRequestCallback = handleInitSegmentResponse({\n                segment,\n                finishProcessingFn\n            });\n            const initSegmentXhr = xhr(initSegmentOptions, initSegmentRequestCallback);\n            activeXhrs.push(initSegmentXhr);\n        }\n        const segmentRequestOptions = merge(xhrOptions, {\n            uri: segment.part && segment.part.resolvedUri || segment.resolvedUri,\n            responseType: 'arraybuffer',\n            headers: segmentXhrHeaders(segment)\n        });\n        const segmentRequestCallback = handleSegmentResponse({\n            segment,\n            finishProcessingFn,\n            responseType: segmentRequestOptions.responseType\n        });\n        const segmentXhr = xhr(segmentRequestOptions, segmentRequestCallback);\n        segmentXhr.addEventListener('progress', handleProgress({\n            segment,\n            progressFn,\n            trackInfoFn,\n            timingInfoFn,\n            videoSegmentTimingInfoFn,\n            audioSegmentTimingInfoFn,\n            id3Fn,\n            captionsFn,\n            isEndOfTimeline,\n            endedTimelineFn,\n            dataFn\n        }));\n        activeXhrs.push(segmentXhr); // since all parts of the request must be considered, but should not make callbacks\n        // multiple times, provide a shared state object\n\n        const loadendState = {};\n        activeXhrs.forEach(activeXhr => {\n            activeXhr.addEventListener('loadend', handleLoadEnd({\n                loadendState,\n                abortFn\n            }));\n        });\n        return () => abortAll(activeXhrs);\n    };\n\n    /**\n     * @file - codecs.js - Handles tasks regarding codec strings such as translating them to\n     * codec strings, or translating codec strings into objects that can be examined.\n     */\n    const logFn$1 = logger('CodecUtils');\n    /**\n     * Returns a set of codec strings parsed from the playlist or the default\n     * codec strings if no codecs were specified in the playlist\n     *\n     * @param {Playlist} media the current media playlist\n     * @return {Object} an object with the video and audio codecs\n     */\n\n    const getCodecs = function (media) {\n        // if the codecs were explicitly specified, use them instead of the\n        // defaults\n        const mediaAttributes = media.attributes || {};\n        if (mediaAttributes.CODECS) {\n            return parseCodecs(mediaAttributes.CODECS);\n        }\n    };\n    const isMaat = (main, media) => {\n        const mediaAttributes = media.attributes || {};\n        return main && main.mediaGroups && main.mediaGroups.AUDIO && mediaAttributes.AUDIO && main.mediaGroups.AUDIO[mediaAttributes.AUDIO];\n    };\n    const isMuxed = (main, media) => {\n        if (!isMaat(main, media)) {\n            return true;\n        }\n        const mediaAttributes = media.attributes || {};\n        const audioGroup = main.mediaGroups.AUDIO[mediaAttributes.AUDIO];\n        for (const groupId in audioGroup) {\n            // If an audio group has a URI (the case for HLS, as HLS will use external playlists),\n            // or there are listed playlists (the case for DASH, as the manifest will have already\n            // provided all of the details necessary to generate the audio playlist, as opposed to\n            // HLS' externally requested playlists), then the content is demuxed.\n            if (!audioGroup[groupId].uri && !audioGroup[groupId].playlists) {\n                return true;\n            }\n        }\n        return false;\n    };\n    const unwrapCodecList = function (codecList) {\n        const codecs = {};\n        codecList.forEach(({\n                               mediaType,\n                               type,\n                               details\n                           }) => {\n            codecs[mediaType] = codecs[mediaType] || [];\n            codecs[mediaType].push(translateLegacyCodec(`${type}${details}`));\n        });\n        Object.keys(codecs).forEach(function (mediaType) {\n            if (codecs[mediaType].length > 1) {\n                logFn$1(`multiple ${mediaType} codecs found as attributes: ${codecs[mediaType].join(', ')}. Setting playlist codecs to null so that we wait for mux.js to probe segments for real codecs.`);\n                codecs[mediaType] = null;\n                return;\n            }\n            codecs[mediaType] = codecs[mediaType][0];\n        });\n        return codecs;\n    };\n    const codecCount = function (codecObj) {\n        let count = 0;\n        if (codecObj.audio) {\n            count++;\n        }\n        if (codecObj.video) {\n            count++;\n        }\n        return count;\n    };\n    /**\n     * Calculates the codec strings for a working configuration of\n     * SourceBuffers to play variant streams in a main playlist. If\n     * there is no possible working configuration, an empty object will be\n     * returned.\n     *\n     * @param main {Object} the m3u8 object for the main playlist\n     * @param media {Object} the m3u8 object for the variant playlist\n     * @return {Object} the codec strings.\n     *\n     * @private\n     */\n\n    const codecsForPlaylist = function (main, media) {\n        const mediaAttributes = media.attributes || {};\n        const codecInfo = unwrapCodecList(getCodecs(media) || []); // HLS with multiple-audio tracks must always get an audio codec.\n        // Put another way, there is no way to have a video-only multiple-audio HLS!\n\n        if (isMaat(main, media) && !codecInfo.audio) {\n            if (!isMuxed(main, media)) {\n                // It is possible for codecs to be specified on the audio media group playlist but\n                // not on the rendition playlist. This is mostly the case for DASH, where audio and\n                // video are always separate (and separately specified).\n                const defaultCodecs = unwrapCodecList(codecsFromDefault(main, mediaAttributes.AUDIO) || []);\n                if (defaultCodecs.audio) {\n                    codecInfo.audio = defaultCodecs.audio;\n                }\n            }\n        }\n        return codecInfo;\n    };\n    const logFn = logger('PlaylistSelector');\n    const representationToString = function (representation) {\n        if (!representation || !representation.playlist) {\n            return;\n        }\n        const playlist = representation.playlist;\n        return JSON.stringify({\n            id: playlist.id,\n            bandwidth: representation.bandwidth,\n            width: representation.width,\n            height: representation.height,\n            codecs: playlist.attributes && playlist.attributes.CODECS || ''\n        });\n    }; // Utilities\n\n    /**\n     * Returns the CSS value for the specified property on an element\n     * using `getComputedStyle`. Firefox has a long-standing issue where\n     * getComputedStyle() may return null when running in an iframe with\n     * `display: none`.\n     *\n     * @see https://bugzilla.mozilla.org/show_bug.cgi?id=548397\n     * @param {HTMLElement} el the htmlelement to work on\n     * @param {string} the proprety to get the style for\n     */\n\n    const safeGetComputedStyle = function (el, property) {\n        if (!el) {\n            return '';\n        }\n        const result = window.getComputedStyle(el);\n        if (!result) {\n            return '';\n        }\n        return result[property];\n    };\n    /**\n     * Resuable stable sort function\n     *\n     * @param {Playlists} array\n     * @param {Function} sortFn Different comparators\n     * @function stableSort\n     */\n\n    const stableSort = function (array, sortFn) {\n        const newArray = array.slice();\n        array.sort(function (left, right) {\n            const cmp = sortFn(left, right);\n            if (cmp === 0) {\n                return newArray.indexOf(left) - newArray.indexOf(right);\n            }\n            return cmp;\n        });\n    };\n    /**\n     * A comparator function to sort two playlist object by bandwidth.\n     *\n     * @param {Object} left a media playlist object\n     * @param {Object} right a media playlist object\n     * @return {number} Greater than zero if the bandwidth attribute of\n     * left is greater than the corresponding attribute of right. Less\n     * than zero if the bandwidth of right is greater than left and\n     * exactly zero if the two are equal.\n     */\n\n    const comparePlaylistBandwidth = function (left, right) {\n        let leftBandwidth;\n        let rightBandwidth;\n        if (left.attributes.BANDWIDTH) {\n            leftBandwidth = left.attributes.BANDWIDTH;\n        }\n        leftBandwidth = leftBandwidth || window.Number.MAX_VALUE;\n        if (right.attributes.BANDWIDTH) {\n            rightBandwidth = right.attributes.BANDWIDTH;\n        }\n        rightBandwidth = rightBandwidth || window.Number.MAX_VALUE;\n        return leftBandwidth - rightBandwidth;\n    };\n    /**\n     * A comparator function to sort two playlist object by resolution (width).\n     *\n     * @param {Object} left a media playlist object\n     * @param {Object} right a media playlist object\n     * @return {number} Greater than zero if the resolution.width attribute of\n     * left is greater than the corresponding attribute of right. Less\n     * than zero if the resolution.width of right is greater than left and\n     * exactly zero if the two are equal.\n     */\n\n    const comparePlaylistResolution = function (left, right) {\n        let leftWidth;\n        let rightWidth;\n        if (left.attributes.RESOLUTION && left.attributes.RESOLUTION.width) {\n            leftWidth = left.attributes.RESOLUTION.width;\n        }\n        leftWidth = leftWidth || window.Number.MAX_VALUE;\n        if (right.attributes.RESOLUTION && right.attributes.RESOLUTION.width) {\n            rightWidth = right.attributes.RESOLUTION.width;\n        }\n        rightWidth = rightWidth || window.Number.MAX_VALUE; // NOTE - Fallback to bandwidth sort as appropriate in cases where multiple renditions\n        // have the same media dimensions/ resolution\n\n        if (leftWidth === rightWidth && left.attributes.BANDWIDTH && right.attributes.BANDWIDTH) {\n            return left.attributes.BANDWIDTH - right.attributes.BANDWIDTH;\n        }\n        return leftWidth - rightWidth;\n    };\n    /**\n     * Chooses the appropriate media playlist based on bandwidth and player size\n     *\n     * @param {Object} main\n     *        Object representation of the main manifest\n     * @param {number} playerBandwidth\n     *        Current calculated bandwidth of the player\n     * @param {number} playerWidth\n     *        Current width of the player element (should account for the device pixel ratio)\n     * @param {number} playerHeight\n     *        Current height of the player element (should account for the device pixel ratio)\n     * @param {boolean} limitRenditionByPlayerDimensions\n     *        True if the player width and height should be used during the selection, false otherwise\n     * @param {Object} playlistController\n     *        the current playlistController object\n     * @return {Playlist} the highest bitrate playlist less than the\n     * currently detected bandwidth, accounting for some amount of\n     * bandwidth variance\n     */\n\n    let simpleSelector = function (main, playerBandwidth, playerWidth, playerHeight, limitRenditionByPlayerDimensions, playlistController) {\n        // If we end up getting called before `main` is available, exit early\n        if (!main) {\n            return;\n        }\n        const options = {\n            bandwidth: playerBandwidth,\n            width: playerWidth,\n            height: playerHeight,\n            limitRenditionByPlayerDimensions\n        };\n        let playlists = main.playlists; // if playlist is audio only, select between currently active audio group playlists.\n\n        if (Playlist.isAudioOnly(main)) {\n            playlists = playlistController.getAudioTrackPlaylists_(); // add audioOnly to options so that we log audioOnly: true\n            // at the buttom of this function for debugging.\n\n            options.audioOnly = true;\n        } // convert the playlists to an intermediary representation to make comparisons easier\n\n        let sortedPlaylistReps = playlists.map(playlist => {\n            let bandwidth;\n            const width = playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.width;\n            const height = playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height;\n            bandwidth = playlist.attributes && playlist.attributes.BANDWIDTH;\n            bandwidth = bandwidth || window.Number.MAX_VALUE;\n            return {\n                bandwidth,\n                width,\n                height,\n                playlist\n            };\n        });\n        stableSort(sortedPlaylistReps, (left, right) => left.bandwidth - right.bandwidth); // filter out any playlists that have been excluded due to\n        // incompatible configurations\n\n        sortedPlaylistReps = sortedPlaylistReps.filter(rep => !Playlist.isIncompatible(rep.playlist)); // filter out any playlists that have been disabled manually through the representations\n        // api or excluded temporarily due to playback errors.\n\n        let enabledPlaylistReps = sortedPlaylistReps.filter(rep => Playlist.isEnabled(rep.playlist));\n        if (!enabledPlaylistReps.length) {\n            // if there are no enabled playlists, then they have all been excluded or disabled\n            // by the user through the representations api. In this case, ignore exclusion and\n            // fallback to what the user wants by using playlists the user has not disabled.\n            enabledPlaylistReps = sortedPlaylistReps.filter(rep => !Playlist.isDisabled(rep.playlist));\n        } // filter out any variant that has greater effective bitrate\n        // than the current estimated bandwidth\n\n        const bandwidthPlaylistReps = enabledPlaylistReps.filter(rep => rep.bandwidth * Config.BANDWIDTH_VARIANCE < playerBandwidth);\n        let highestRemainingBandwidthRep = bandwidthPlaylistReps[bandwidthPlaylistReps.length - 1]; // get all of the renditions with the same (highest) bandwidth\n        // and then taking the very first element\n\n        const bandwidthBestRep = bandwidthPlaylistReps.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0]; // if we're not going to limit renditions by player size, make an early decision.\n\n        if (limitRenditionByPlayerDimensions === false) {\n            const chosenRep = bandwidthBestRep || enabledPlaylistReps[0] || sortedPlaylistReps[0];\n            if (chosenRep && chosenRep.playlist) {\n                let type = 'sortedPlaylistReps';\n                if (bandwidthBestRep) {\n                    type = 'bandwidthBestRep';\n                }\n                if (enabledPlaylistReps[0]) {\n                    type = 'enabledPlaylistReps';\n                }\n                logFn(`choosing ${representationToString(chosenRep)} using ${type} with options`, options);\n                return chosenRep.playlist;\n            }\n            logFn('could not choose a playlist with options', options);\n            return null;\n        } // filter out playlists without resolution information\n\n        const haveResolution = bandwidthPlaylistReps.filter(rep => rep.width && rep.height); // sort variants by resolution\n\n        stableSort(haveResolution, (left, right) => left.width - right.width); // if we have the exact resolution as the player use it\n\n        const resolutionBestRepList = haveResolution.filter(rep => rep.width === playerWidth && rep.height === playerHeight);\n        highestRemainingBandwidthRep = resolutionBestRepList[resolutionBestRepList.length - 1]; // ensure that we pick the highest bandwidth variant that have exact resolution\n\n        const resolutionBestRep = resolutionBestRepList.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0];\n        let resolutionPlusOneList;\n        let resolutionPlusOneSmallest;\n        let resolutionPlusOneRep; // find the smallest variant that is larger than the player\n        // if there is no match of exact resolution\n\n        if (!resolutionBestRep) {\n            resolutionPlusOneList = haveResolution.filter(rep => rep.width > playerWidth || rep.height > playerHeight); // find all the variants have the same smallest resolution\n\n            resolutionPlusOneSmallest = resolutionPlusOneList.filter(rep => rep.width === resolutionPlusOneList[0].width && rep.height === resolutionPlusOneList[0].height); // ensure that we also pick the highest bandwidth variant that\n            // is just-larger-than the video player\n\n            highestRemainingBandwidthRep = resolutionPlusOneSmallest[resolutionPlusOneSmallest.length - 1];\n            resolutionPlusOneRep = resolutionPlusOneSmallest.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0];\n        }\n        let leastPixelDiffRep; // If this selector proves to be better than others,\n        // resolutionPlusOneRep and resolutionBestRep and all\n        // the code involving them should be removed.\n\n        if (playlistController.leastPixelDiffSelector) {\n            // find the variant that is closest to the player's pixel size\n            const leastPixelDiffList = haveResolution.map(rep => {\n                rep.pixelDiff = Math.abs(rep.width - playerWidth) + Math.abs(rep.height - playerHeight);\n                return rep;\n            }); // get the highest bandwidth, closest resolution playlist\n\n            stableSort(leastPixelDiffList, (left, right) => {\n                // sort by highest bandwidth if pixelDiff is the same\n                if (left.pixelDiff === right.pixelDiff) {\n                    return right.bandwidth - left.bandwidth;\n                }\n                return left.pixelDiff - right.pixelDiff;\n            });\n            leastPixelDiffRep = leastPixelDiffList[0];\n        } // fallback chain of variants\n\n        const chosenRep = leastPixelDiffRep || resolutionPlusOneRep || resolutionBestRep || bandwidthBestRep || enabledPlaylistReps[0] || sortedPlaylistReps[0];\n        if (chosenRep && chosenRep.playlist) {\n            let type = 'sortedPlaylistReps';\n            if (leastPixelDiffRep) {\n                type = 'leastPixelDiffRep';\n            } else if (resolutionPlusOneRep) {\n                type = 'resolutionPlusOneRep';\n            } else if (resolutionBestRep) {\n                type = 'resolutionBestRep';\n            } else if (bandwidthBestRep) {\n                type = 'bandwidthBestRep';\n            } else if (enabledPlaylistReps[0]) {\n                type = 'enabledPlaylistReps';\n            }\n            logFn(`choosing ${representationToString(chosenRep)} using ${type} with options`, options);\n            return chosenRep.playlist;\n        }\n        logFn('could not choose a playlist with options', options);\n        return null;\n    };\n\n    /**\n     * Chooses the appropriate media playlist based on the most recent\n     * bandwidth estimate and the player size.\n     *\n     * Expects to be called within the context of an instance of VhsHandler\n     *\n     * @return {Playlist} the highest bitrate playlist less than the\n     * currently detected bandwidth, accounting for some amount of\n     * bandwidth variance\n     */\n\n    const lastBandwidthSelector = function () {\n        const pixelRatio = this.useDevicePixelRatio ? window.devicePixelRatio || 1 : 1;\n        return simpleSelector(this.playlists.main, this.systemBandwidth, parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10) * pixelRatio, parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10) * pixelRatio, this.limitRenditionByPlayerDimensions, this.playlistController_);\n    };\n    /**\n     * Chooses the appropriate media playlist based on an\n     * exponential-weighted moving average of the bandwidth after\n     * filtering for player size.\n     *\n     * Expects to be called within the context of an instance of VhsHandler\n     *\n     * @param {number} decay - a number between 0 and 1. Higher values of\n     * this parameter will cause previous bandwidth estimates to lose\n     * significance more quickly.\n     * @return {Function} a function which can be invoked to create a new\n     * playlist selector function.\n     * @see https://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average\n     */\n\n    const movingAverageBandwidthSelector = function (decay) {\n        let average = -1;\n        let lastSystemBandwidth = -1;\n        if (decay < 0 || decay > 1) {\n            throw new Error('Moving average bandwidth decay must be between 0 and 1.');\n        }\n        return function () {\n            const pixelRatio = this.useDevicePixelRatio ? window.devicePixelRatio || 1 : 1;\n            if (average < 0) {\n                average = this.systemBandwidth;\n                lastSystemBandwidth = this.systemBandwidth;\n            } // stop the average value from decaying for every 250ms\n            // when the systemBandwidth is constant\n            // and\n            // stop average from setting to a very low value when the\n            // systemBandwidth becomes 0 in case of chunk cancellation\n\n            if (this.systemBandwidth > 0 && this.systemBandwidth !== lastSystemBandwidth) {\n                average = decay * this.systemBandwidth + (1 - decay) * average;\n                lastSystemBandwidth = this.systemBandwidth;\n            }\n            return simpleSelector(this.playlists.main, average, parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10) * pixelRatio, parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10) * pixelRatio, this.limitRenditionByPlayerDimensions, this.playlistController_);\n        };\n    };\n    /**\n     * Chooses the appropriate media playlist based on the potential to rebuffer\n     *\n     * @param {Object} settings\n     *        Object of information required to use this selector\n     * @param {Object} settings.main\n     *        Object representation of the main manifest\n     * @param {number} settings.currentTime\n     *        The current time of the player\n     * @param {number} settings.bandwidth\n     *        Current measured bandwidth\n     * @param {number} settings.duration\n     *        Duration of the media\n     * @param {number} settings.segmentDuration\n     *        Segment duration to be used in round trip time calculations\n     * @param {number} settings.timeUntilRebuffer\n     *        Time left in seconds until the player has to rebuffer\n     * @param {number} settings.currentTimeline\n     *        The current timeline segments are being loaded from\n     * @param {SyncController} settings.syncController\n     *        SyncController for determining if we have a sync point for a given playlist\n     * @return {Object|null}\n     *         {Object} return.playlist\n     *         The highest bandwidth playlist with the least amount of rebuffering\n     *         {Number} return.rebufferingImpact\n     *         The amount of time in seconds switching to this playlist will rebuffer. A\n     *         negative value means that switching will cause zero rebuffering.\n     */\n\n    const minRebufferMaxBandwidthSelector = function (settings) {\n        const {\n            main,\n            currentTime,\n            bandwidth,\n            duration,\n            segmentDuration,\n            timeUntilRebuffer,\n            currentTimeline,\n            syncController\n        } = settings; // filter out any playlists that have been excluded due to\n        // incompatible configurations\n\n        const compatiblePlaylists = main.playlists.filter(playlist => !Playlist.isIncompatible(playlist)); // filter out any playlists that have been disabled manually through the representations\n        // api or excluded temporarily due to playback errors.\n\n        let enabledPlaylists = compatiblePlaylists.filter(Playlist.isEnabled);\n        if (!enabledPlaylists.length) {\n            // if there are no enabled playlists, then they have all been excluded or disabled\n            // by the user through the representations api. In this case, ignore exclusion and\n            // fallback to what the user wants by using playlists the user has not disabled.\n            enabledPlaylists = compatiblePlaylists.filter(playlist => !Playlist.isDisabled(playlist));\n        }\n        const bandwidthPlaylists = enabledPlaylists.filter(Playlist.hasAttribute.bind(null, 'BANDWIDTH'));\n        const rebufferingEstimates = bandwidthPlaylists.map(playlist => {\n            const syncPoint = syncController.getSyncPoint(playlist, duration, currentTimeline, currentTime); // If there is no sync point for this playlist, switching to it will require a\n            // sync request first. This will double the request time\n\n            const numRequests = syncPoint ? 1 : 2;\n            const requestTimeEstimate = Playlist.estimateSegmentRequestTime(segmentDuration, bandwidth, playlist);\n            const rebufferingImpact = requestTimeEstimate * numRequests - timeUntilRebuffer;\n            return {\n                playlist,\n                rebufferingImpact\n            };\n        });\n        const noRebufferingPlaylists = rebufferingEstimates.filter(estimate => estimate.rebufferingImpact <= 0); // Sort by bandwidth DESC\n\n        stableSort(noRebufferingPlaylists, (a, b) => comparePlaylistBandwidth(b.playlist, a.playlist));\n        if (noRebufferingPlaylists.length) {\n            return noRebufferingPlaylists[0];\n        }\n        stableSort(rebufferingEstimates, (a, b) => a.rebufferingImpact - b.rebufferingImpact);\n        return rebufferingEstimates[0] || null;\n    };\n    /**\n     * Chooses the appropriate media playlist, which in this case is the lowest bitrate\n     * one with video.  If no renditions with video exist, return the lowest audio rendition.\n     *\n     * Expects to be called within the context of an instance of VhsHandler\n     *\n     * @return {Object|null}\n     *         {Object} return.playlist\n     *         The lowest bitrate playlist that contains a video codec.  If no such rendition\n     *         exists pick the lowest audio rendition.\n     */\n\n    const lowestBitrateCompatibleVariantSelector = function () {\n        // filter out any playlists that have been excluded due to\n        // incompatible configurations or playback errors\n        const playlists = this.playlists.main.playlists.filter(Playlist.isEnabled); // Sort ascending by bitrate\n\n        stableSort(playlists, (a, b) => comparePlaylistBandwidth(a, b)); // Parse and assume that playlists with no video codec have no video\n        // (this is not necessarily true, although it is generally true).\n        //\n        // If an entire manifest has no valid videos everything will get filtered\n        // out.\n\n        const playlistsWithVideo = playlists.filter(playlist => !!codecsForPlaylist(this.playlists.main, playlist).video);\n        return playlistsWithVideo[0] || null;\n    };\n\n    /**\n     * Combine all segments into a single Uint8Array\n     *\n     * @param {Object} segmentObj\n     * @return {Uint8Array} concatenated bytes\n     * @private\n     */\n    const concatSegments = segmentObj => {\n        let offset = 0;\n        let tempBuffer;\n        if (segmentObj.bytes) {\n            tempBuffer = new Uint8Array(segmentObj.bytes); // combine the individual segments into one large typed-array\n\n            segmentObj.segments.forEach(segment => {\n                tempBuffer.set(segment, offset);\n                offset += segment.byteLength;\n            });\n        }\n        return tempBuffer;\n    };\n\n    /**\n     * @file text-tracks.js\n     */\n    /**\n     * Create captions text tracks on video.js if they do not exist\n     *\n     * @param {Object} inbandTextTracks a reference to current inbandTextTracks\n     * @param {Object} tech the video.js tech\n     * @param {Object} captionStream the caption stream to create\n     * @private\n     */\n\n    const createCaptionsTrackIfNotExists = function (inbandTextTracks, tech, captionStream) {\n        if (!inbandTextTracks[captionStream]) {\n            tech.trigger({\n                type: 'usage',\n                name: 'vhs-608'\n            });\n            let instreamId = captionStream; // we need to translate SERVICEn for 708 to how mux.js currently labels them\n\n            if (/^cc708_/.test(captionStream)) {\n                instreamId = 'SERVICE' + captionStream.split('_')[1];\n            }\n            const track = tech.textTracks().getTrackById(instreamId);\n            if (track) {\n                // Resuse an existing track with a CC# id because this was\n                // very likely created by videojs-contrib-hls from information\n                // in the m3u8 for us to use\n                inbandTextTracks[captionStream] = track;\n            } else {\n                // This section gets called when we have caption services that aren't specified in the manifest.\n                // Manifest level caption services are handled in media-groups.js under CLOSED-CAPTIONS.\n                const captionServices = tech.options_.vhs && tech.options_.vhs.captionServices || {};\n                let label = captionStream;\n                let language = captionStream;\n                let def = false;\n                const captionService = captionServices[instreamId];\n                if (captionService) {\n                    label = captionService.label;\n                    language = captionService.language;\n                    def = captionService.default;\n                } // Otherwise, create a track with the default `CC#` label and\n                // without a language\n\n                inbandTextTracks[captionStream] = tech.addRemoteTextTrack({\n                    kind: 'captions',\n                    id: instreamId,\n                    // TODO: investigate why this doesn't seem to turn the caption on by default\n                    default: def,\n                    label,\n                    language\n                }, false).track;\n            }\n        }\n    };\n    /**\n     * Add caption text track data to a source handler given an array of captions\n     *\n     * @param {Object}\n     *   @param {Object} inbandTextTracks the inband text tracks\n     *   @param {number} timestampOffset the timestamp offset of the source buffer\n     *   @param {Array} captionArray an array of caption data\n     * @private\n     */\n\n    const addCaptionData = function ({\n                                         inbandTextTracks,\n                                         captionArray,\n                                         timestampOffset\n                                     }) {\n        if (!captionArray) {\n            return;\n        }\n        const Cue = window.WebKitDataCue || window.VTTCue;\n        captionArray.forEach(caption => {\n            const track = caption.stream; // in CEA 608 captions, video.js/mux.js sends a content array\n            // with positioning data\n\n            if (caption.content) {\n                caption.content.forEach(value => {\n                    const cue = new Cue(caption.startTime + timestampOffset, caption.endTime + timestampOffset, value.text);\n                    cue.line = value.line;\n                    cue.align = 'left';\n                    cue.position = value.position;\n                    cue.positionAlign = 'line-left';\n                    inbandTextTracks[track].addCue(cue);\n                });\n            } else {\n                // otherwise, a text value with combined captions is sent\n                inbandTextTracks[track].addCue(new Cue(caption.startTime + timestampOffset, caption.endTime + timestampOffset, caption.text));\n            }\n        });\n    };\n    /**\n     * Define properties on a cue for backwards compatability,\n     * but warn the user that the way that they are using it\n     * is depricated and will be removed at a later date.\n     *\n     * @param {Cue} cue the cue to add the properties on\n     * @private\n     */\n\n    const deprecateOldCue = function (cue) {\n        Object.defineProperties(cue.frame, {\n            id: {\n                get() {\n                    videojs.log.warn('cue.frame.id is deprecated. Use cue.value.key instead.');\n                    return cue.value.key;\n                }\n            },\n            value: {\n                get() {\n                    videojs.log.warn('cue.frame.value is deprecated. Use cue.value.data instead.');\n                    return cue.value.data;\n                }\n            },\n            privateData: {\n                get() {\n                    videojs.log.warn('cue.frame.privateData is deprecated. Use cue.value.data instead.');\n                    return cue.value.data;\n                }\n            }\n        });\n    };\n    /**\n     * Add metadata text track data to a source handler given an array of metadata\n     *\n     * @param {Object}\n     *   @param {Object} inbandTextTracks the inband text tracks\n     *   @param {Array} metadataArray an array of meta data\n     *   @param {number} timestampOffset the timestamp offset of the source buffer\n     *   @param {number} videoDuration the duration of the video\n     * @private\n     */\n\n    const addMetadata = ({\n                             inbandTextTracks,\n                             metadataArray,\n                             timestampOffset,\n                             videoDuration\n                         }) => {\n        if (!metadataArray) {\n            return;\n        }\n        const Cue = window.WebKitDataCue || window.VTTCue;\n        const metadataTrack = inbandTextTracks.metadataTrack_;\n        if (!metadataTrack) {\n            return;\n        }\n        metadataArray.forEach(metadata => {\n            const time = metadata.cueTime + timestampOffset; // if time isn't a finite number between 0 and Infinity, like NaN,\n            // ignore this bit of metadata.\n            // This likely occurs when you have an non-timed ID3 tag like TIT2,\n            // which is the \"Title/Songname/Content description\" frame\n\n            if (typeof time !== 'number' || window.isNaN(time) || time < 0 || !(time < Infinity)) {\n                return;\n            } // If we have no frames, we can't create a cue.\n\n            if (!metadata.frames || !metadata.frames.length) {\n                return;\n            }\n            metadata.frames.forEach(frame => {\n                const cue = new Cue(time, time, frame.value || frame.url || frame.data || '');\n                cue.frame = frame;\n                cue.value = frame;\n                deprecateOldCue(cue);\n                metadataTrack.addCue(cue);\n            });\n        });\n        if (!metadataTrack.cues || !metadataTrack.cues.length) {\n            return;\n        } // Updating the metadeta cues so that\n        // the endTime of each cue is the startTime of the next cue\n        // the endTime of last cue is the duration of the video\n\n        const cues = metadataTrack.cues;\n        const cuesArray = []; // Create a copy of the TextTrackCueList...\n        // ...disregarding cues with a falsey value\n\n        for (let i = 0; i < cues.length; i++) {\n            if (cues[i]) {\n                cuesArray.push(cues[i]);\n            }\n        } // Group cues by their startTime value\n\n        const cuesGroupedByStartTime = cuesArray.reduce((obj, cue) => {\n            const timeSlot = obj[cue.startTime] || [];\n            timeSlot.push(cue);\n            obj[cue.startTime] = timeSlot;\n            return obj;\n        }, {}); // Sort startTimes by ascending order\n\n        const sortedStartTimes = Object.keys(cuesGroupedByStartTime).sort((a, b) => Number(a) - Number(b)); // Map each cue group's endTime to the next group's startTime\n\n        sortedStartTimes.forEach((startTime, idx) => {\n            const cueGroup = cuesGroupedByStartTime[startTime];\n            const finiteDuration = isFinite(videoDuration) ? videoDuration : startTime;\n            const nextTime = Number(sortedStartTimes[idx + 1]) || finiteDuration; // Map each cue's endTime the next group's startTime\n\n            cueGroup.forEach(cue => {\n                cue.endTime = nextTime;\n            });\n        });\n    }; // object for mapping daterange attributes\n\n    const dateRangeAttr = {\n        id: 'ID',\n        class: 'CLASS',\n        startDate: 'START-DATE',\n        duration: 'DURATION',\n        endDate: 'END-DATE',\n        endOnNext: 'END-ON-NEXT',\n        plannedDuration: 'PLANNED-DURATION',\n        scte35Out: 'SCTE35-OUT',\n        scte35In: 'SCTE35-IN'\n    };\n    const dateRangeKeysToOmit = new Set(['id', 'class', 'startDate', 'duration', 'endDate', 'endOnNext', 'startTime', 'endTime', 'processDateRange']);\n    /**\n     * Add DateRange metadata text track to a source handler given an array of metadata\n     *\n     * @param {Object}\n     *   @param {Object} inbandTextTracks the inband text tracks\n     *   @param {Array} dateRanges parsed media playlist\n     * @private\n     */\n\n    const addDateRangeMetadata = ({\n                                      inbandTextTracks,\n                                      dateRanges\n                                  }) => {\n        const metadataTrack = inbandTextTracks.metadataTrack_;\n        if (!metadataTrack) {\n            return;\n        }\n        const Cue = window.WebKitDataCue || window.VTTCue;\n        dateRanges.forEach(dateRange => {\n            // we generate multiple cues for each date range with different attributes\n            for (const key of Object.keys(dateRange)) {\n                if (dateRangeKeysToOmit.has(key)) {\n                    continue;\n                }\n                const cue = new Cue(dateRange.startTime, dateRange.endTime, '');\n                cue.id = dateRange.id;\n                cue.type = 'com.apple.quicktime.HLS';\n                cue.value = {\n                    key: dateRangeAttr[key],\n                    data: dateRange[key]\n                };\n                if (key === 'scte35Out' || key === 'scte35In') {\n                    cue.value.data = new Uint8Array(cue.value.data.match(/[\\da-f]{2}/gi)).buffer;\n                }\n                metadataTrack.addCue(cue);\n            }\n            dateRange.processDateRange();\n        });\n    };\n    /**\n     * Create metadata text track on video.js if it does not exist\n     *\n     * @param {Object} inbandTextTracks a reference to current inbandTextTracks\n     * @param {string} dispatchType the inband metadata track dispatch type\n     * @param {Object} tech the video.js tech\n     * @private\n     */\n\n    const createMetadataTrackIfNotExists = (inbandTextTracks, dispatchType, tech) => {\n        if (inbandTextTracks.metadataTrack_) {\n            return;\n        }\n        inbandTextTracks.metadataTrack_ = tech.addRemoteTextTrack({\n            kind: 'metadata',\n            label: 'Timed Metadata'\n        }, false).track;\n        if (!videojs.browser.IS_ANY_SAFARI) {\n            inbandTextTracks.metadataTrack_.inBandMetadataTrackDispatchType = dispatchType;\n        }\n    };\n    /**\n     * Remove cues from a track on video.js.\n     *\n     * @param {Double} start start of where we should remove the cue\n     * @param {Double} end end of where the we should remove the cue\n     * @param {Object} track the text track to remove the cues from\n     * @private\n     */\n\n    const removeCuesFromTrack = function (start, end, track) {\n        let i;\n        let cue;\n        if (!track) {\n            return;\n        }\n        if (!track.cues) {\n            return;\n        }\n        i = track.cues.length;\n        while (i--) {\n            cue = track.cues[i]; // Remove any cue within the provided start and end time\n\n            if (cue.startTime >= start && cue.endTime <= end) {\n                track.removeCue(cue);\n            }\n        }\n    };\n    /**\n     * Remove duplicate cues from a track on video.js (a cue is considered a\n     * duplicate if it has the same time interval and text as another)\n     *\n     * @param {Object} track the text track to remove the duplicate cues from\n     * @private\n     */\n\n    const removeDuplicateCuesFromTrack = function (track) {\n        const cues = track.cues;\n        if (!cues) {\n            return;\n        }\n        const uniqueCues = {};\n        for (let i = cues.length - 1; i >= 0; i--) {\n            const cue = cues[i];\n            const cueKey = `${cue.startTime}-${cue.endTime}-${cue.text}`;\n            if (uniqueCues[cueKey]) {\n                track.removeCue(cue);\n            } else {\n                uniqueCues[cueKey] = cue;\n            }\n        }\n    };\n\n    /**\n     * Returns a list of gops in the buffer that have a pts value of 3 seconds or more in\n     * front of current time.\n     *\n     * @param {Array} buffer\n     *        The current buffer of gop information\n     * @param {number} currentTime\n     *        The current time\n     * @param {Double} mapping\n     *        Offset to map display time to stream presentation time\n     * @return {Array}\n     *         List of gops considered safe to append over\n     */\n\n    const gopsSafeToAlignWith = (buffer, currentTime, mapping) => {\n        if (typeof currentTime === 'undefined' || currentTime === null || !buffer.length) {\n            return [];\n        } // pts value for current time + 3 seconds to give a bit more wiggle room\n\n        const currentTimePts = Math.ceil((currentTime - mapping + 3) * clock_1);\n        let i;\n        for (i = 0; i < buffer.length; i++) {\n            if (buffer[i].pts > currentTimePts) {\n                break;\n            }\n        }\n        return buffer.slice(i);\n    };\n    /**\n     * Appends gop information (timing and byteLength) received by the transmuxer for the\n     * gops appended in the last call to appendBuffer\n     *\n     * @param {Array} buffer\n     *        The current buffer of gop information\n     * @param {Array} gops\n     *        List of new gop information\n     * @param {boolean} replace\n     *        If true, replace the buffer with the new gop information. If false, append the\n     *        new gop information to the buffer in the right location of time.\n     * @return {Array}\n     *         Updated list of gop information\n     */\n\n    const updateGopBuffer = (buffer, gops, replace) => {\n        if (!gops.length) {\n            return buffer;\n        }\n        if (replace) {\n            // If we are in safe append mode, then completely overwrite the gop buffer\n            // with the most recent appeneded data. This will make sure that when appending\n            // future segments, we only try to align with gops that are both ahead of current\n            // time and in the last segment appended.\n            return gops.slice();\n        }\n        const start = gops[0].pts;\n        let i = 0;\n        for (i; i < buffer.length; i++) {\n            if (buffer[i].pts >= start) {\n                break;\n            }\n        }\n        return buffer.slice(0, i).concat(gops);\n    };\n    /**\n     * Removes gop information in buffer that overlaps with provided start and end\n     *\n     * @param {Array} buffer\n     *        The current buffer of gop information\n     * @param {Double} start\n     *        position to start the remove at\n     * @param {Double} end\n     *        position to end the remove at\n     * @param {Double} mapping\n     *        Offset to map display time to stream presentation time\n     */\n\n    const removeGopBuffer = (buffer, start, end, mapping) => {\n        const startPts = Math.ceil((start - mapping) * clock_1);\n        const endPts = Math.ceil((end - mapping) * clock_1);\n        const updatedBuffer = buffer.slice();\n        let i = buffer.length;\n        while (i--) {\n            if (buffer[i].pts <= endPts) {\n                break;\n            }\n        }\n        if (i === -1) {\n            // no removal because end of remove range is before start of buffer\n            return updatedBuffer;\n        }\n        let j = i + 1;\n        while (j--) {\n            if (buffer[j].pts <= startPts) {\n                break;\n            }\n        } // clamp remove range start to 0 index\n\n        j = Math.max(j, 0);\n        updatedBuffer.splice(j, i - j + 1);\n        return updatedBuffer;\n    };\n    const shallowEqual = function (a, b) {\n        // if both are undefined\n        // or one or the other is undefined\n        // they are not equal\n        if (!a && !b || !a && b || a && !b) {\n            return false;\n        } // they are the same object and thus, equal\n\n        if (a === b) {\n            return true;\n        } // sort keys so we can make sure they have\n        // all the same keys later.\n\n        const akeys = Object.keys(a).sort();\n        const bkeys = Object.keys(b).sort(); // different number of keys, not equal\n\n        if (akeys.length !== bkeys.length) {\n            return false;\n        }\n        for (let i = 0; i < akeys.length; i++) {\n            const key = akeys[i]; // different sorted keys, not equal\n\n            if (key !== bkeys[i]) {\n                return false;\n            } // different values, not equal\n\n            if (a[key] !== b[key]) {\n                return false;\n            }\n        }\n        return true;\n    };\n\n    // https://www.w3.org/TR/WebIDL-1/#quotaexceedederror\n    const QUOTA_EXCEEDED_ERR = 22;\n\n    /**\n     * The segment loader has no recourse except to fetch a segment in the\n     * current playlist and use the internal timestamps in that segment to\n     * generate a syncPoint. This function returns a good candidate index\n     * for that process.\n     *\n     * @param {Array} segments - the segments array from a playlist.\n     * @return {number} An index of a segment from the playlist to load\n     */\n\n    const getSyncSegmentCandidate = function (currentTimeline, segments, targetTime) {\n        segments = segments || [];\n        const timelineSegments = [];\n        let time = 0;\n        for (let i = 0; i < segments.length; i++) {\n            const segment = segments[i];\n            if (currentTimeline === segment.timeline) {\n                timelineSegments.push(i);\n                time += segment.duration;\n                if (time > targetTime) {\n                    return i;\n                }\n            }\n        }\n        if (timelineSegments.length === 0) {\n            return 0;\n        } // default to the last timeline segment\n\n        return timelineSegments[timelineSegments.length - 1];\n    }; // In the event of a quota exceeded error, keep at least one second of back buffer. This\n    // number was arbitrarily chosen and may be updated in the future, but seemed reasonable\n    // as a start to prevent any potential issues with removing content too close to the\n    // playhead.\n\n    const MIN_BACK_BUFFER = 1; // in ms\n\n    const CHECK_BUFFER_DELAY = 500;\n    const finite = num => typeof num === 'number' && isFinite(num); // With most content hovering around 30fps, if a segment has a duration less than a half\n    // frame at 30fps or one frame at 60fps, the bandwidth and throughput calculations will\n    // not accurately reflect the rest of the content.\n\n    const MIN_SEGMENT_DURATION_TO_SAVE_STATS = 1 / 60;\n    const illegalMediaSwitch = (loaderType, startingMedia, trackInfo) => {\n        // Although these checks should most likely cover non 'main' types, for now it narrows\n        // the scope of our checks.\n        if (loaderType !== 'main' || !startingMedia || !trackInfo) {\n            return null;\n        }\n        if (!trackInfo.hasAudio && !trackInfo.hasVideo) {\n            return 'Neither audio nor video found in segment.';\n        }\n        if (startingMedia.hasVideo && !trackInfo.hasVideo) {\n            return 'Only audio found in segment when we expected video.' + ' We can\\'t switch to audio only from a stream that had video.' + ' To get rid of this message, please add codec information to the manifest.';\n        }\n        if (!startingMedia.hasVideo && trackInfo.hasVideo) {\n            return 'Video found in segment when we expected only audio.' + ' We can\\'t switch to a stream with video from an audio only stream.' + ' To get rid of this message, please add codec information to the manifest.';\n        }\n        return null;\n    };\n    /**\n     * Calculates a time value that is safe to remove from the back buffer without interrupting\n     * playback.\n     *\n     * @param {TimeRange} seekable\n     *        The current seekable range\n     * @param {number} currentTime\n     *        The current time of the player\n     * @param {number} targetDuration\n     *        The target duration of the current playlist\n     * @return {number}\n     *         Time that is safe to remove from the back buffer without interrupting playback\n     */\n\n    const safeBackBufferTrimTime = (seekable, currentTime, targetDuration) => {\n        // 30 seconds before the playhead provides a safe default for trimming.\n        //\n        // Choosing a reasonable default is particularly important for high bitrate content and\n        // VOD videos/live streams with large windows, as the buffer may end up overfilled and\n        // throw an APPEND_BUFFER_ERR.\n        let trimTime = currentTime - Config.BACK_BUFFER_LENGTH;\n        if (seekable.length) {\n            // Some live playlists may have a shorter window of content than the full allowed back\n            // buffer. For these playlists, don't save content that's no longer within the window.\n            trimTime = Math.max(trimTime, seekable.start(0));\n        } // Don't remove within target duration of the current time to avoid the possibility of\n        // removing the GOP currently being played, as removing it can cause playback stalls.\n\n        const maxTrimTime = currentTime - targetDuration;\n        return Math.min(maxTrimTime, trimTime);\n    };\n    const segmentInfoString = segmentInfo => {\n        const {\n            startOfSegment,\n            duration,\n            segment,\n            part,\n            playlist: {\n                mediaSequence: seq,\n                id,\n                segments = []\n            },\n            mediaIndex: index,\n            partIndex,\n            timeline\n        } = segmentInfo;\n        const segmentLen = segments.length - 1;\n        let selection = 'mediaIndex/partIndex increment';\n        if (segmentInfo.getMediaInfoForTime) {\n            selection = `getMediaInfoForTime (${segmentInfo.getMediaInfoForTime})`;\n        } else if (segmentInfo.isSyncRequest) {\n            selection = 'getSyncSegmentCandidate (isSyncRequest)';\n        }\n        if (segmentInfo.independent) {\n            selection += ` with independent ${segmentInfo.independent}`;\n        }\n        const hasPartIndex = typeof partIndex === 'number';\n        const name = segmentInfo.segment.uri ? 'segment' : 'pre-segment';\n        const zeroBasedPartCount = hasPartIndex ? getKnownPartCount({\n            preloadSegment: segment\n        }) - 1 : 0;\n        return `${name} [${seq + index}/${seq + segmentLen}]` + (hasPartIndex ? ` part [${partIndex}/${zeroBasedPartCount}]` : '') + ` segment start/end [${segment.start} => ${segment.end}]` + (hasPartIndex ? ` part start/end [${part.start} => ${part.end}]` : '') + ` startOfSegment [${startOfSegment}]` + ` duration [${duration}]` + ` timeline [${timeline}]` + ` selected by [${selection}]` + ` playlist [${id}]`;\n    };\n    const timingInfoPropertyForMedia = mediaType => `${mediaType}TimingInfo`;\n    /**\n     * Returns the timestamp offset to use for the segment.\n     *\n     * @param {number} segmentTimeline\n     *        The timeline of the segment\n     * @param {number} currentTimeline\n     *        The timeline currently being followed by the loader\n     * @param {number} startOfSegment\n     *        The estimated segment start\n     * @param {TimeRange[]} buffered\n     *        The loader's buffer\n     * @param {boolean} overrideCheck\n     *        If true, no checks are made to see if the timestamp offset value should be set,\n     *        but sets it directly to a value.\n     *\n     * @return {number|null}\n     *         Either a number representing a new timestamp offset, or null if the segment is\n     *         part of the same timeline\n     */\n\n    const timestampOffsetForSegment = ({\n                                           segmentTimeline,\n                                           currentTimeline,\n                                           startOfSegment,\n                                           buffered,\n                                           overrideCheck\n                                       }) => {\n        // Check to see if we are crossing a discontinuity to see if we need to set the\n        // timestamp offset on the transmuxer and source buffer.\n        //\n        // Previously, we changed the timestampOffset if the start of this segment was less than\n        // the currently set timestampOffset, but this isn't desirable as it can produce bad\n        // behavior, especially around long running live streams.\n        if (!overrideCheck && segmentTimeline === currentTimeline) {\n            return null;\n        } // When changing renditions, it's possible to request a segment on an older timeline. For\n        // instance, given two renditions with the following:\n        //\n        // #EXTINF:10\n        // segment1\n        // #EXT-X-DISCONTINUITY\n        // #EXTINF:10\n        // segment2\n        // #EXTINF:10\n        // segment3\n        //\n        // And the current player state:\n        //\n        // current time: 8\n        // buffer: 0 => 20\n        //\n        // The next segment on the current rendition would be segment3, filling the buffer from\n        // 20s onwards. However, if a rendition switch happens after segment2 was requested,\n        // then the next segment to be requested will be segment1 from the new rendition in\n        // order to fill time 8 and onwards. Using the buffered end would result in repeated\n        // content (since it would position segment1 of the new rendition starting at 20s). This\n        // case can be identified when the new segment's timeline is a prior value. Instead of\n        // using the buffered end, the startOfSegment can be used, which, hopefully, will be\n        // more accurate to the actual start time of the segment.\n\n        if (segmentTimeline < currentTimeline) {\n            return startOfSegment;\n        } // segmentInfo.startOfSegment used to be used as the timestamp offset, however, that\n        // value uses the end of the last segment if it is available. While this value\n        // should often be correct, it's better to rely on the buffered end, as the new\n        // content post discontinuity should line up with the buffered end as if it were\n        // time 0 for the new content.\n\n        return buffered.length ? buffered.end(buffered.length - 1) : startOfSegment;\n    };\n    /**\n     * Returns whether or not the loader should wait for a timeline change from the timeline\n     * change controller before processing the segment.\n     *\n     * Primary timing in VHS goes by video. This is different from most media players, as\n     * audio is more often used as the primary timing source. For the foreseeable future, VHS\n     * will continue to use video as the primary timing source, due to the current logic and\n     * expectations built around it.\n\n     * Since the timing follows video, in order to maintain sync, the video loader is\n     * responsible for setting both audio and video source buffer timestamp offsets.\n     *\n     * Setting different values for audio and video source buffers could lead to\n     * desyncing. The following examples demonstrate some of the situations where this\n     * distinction is important. Note that all of these cases involve demuxed content. When\n     * content is muxed, the audio and video are packaged together, therefore syncing\n     * separate media playlists is not an issue.\n     *\n     * CASE 1: Audio prepares to load a new timeline before video:\n     *\n     * Timeline:       0                 1\n     * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n     * Audio Loader:                     ^\n     * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n     * Video Loader              ^\n     *\n     * In the above example, the audio loader is preparing to load the 6th segment, the first\n     * after a discontinuity, while the video loader is still loading the 5th segment, before\n     * the discontinuity.\n     *\n     * If the audio loader goes ahead and loads and appends the 6th segment before the video\n     * loader crosses the discontinuity, then when appended, the 6th audio segment will use\n     * the timestamp offset from timeline 0. This will likely lead to desyncing. In addition,\n     * the audio loader must provide the audioAppendStart value to trim the content in the\n     * transmuxer, and that value relies on the audio timestamp offset. Since the audio\n     * timestamp offset is set by the video (main) loader, the audio loader shouldn't load the\n     * segment until that value is provided.\n     *\n     * CASE 2: Video prepares to load a new timeline before audio:\n     *\n     * Timeline:       0                 1\n     * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n     * Audio Loader:             ^\n     * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n     * Video Loader                      ^\n     *\n     * In the above example, the video loader is preparing to load the 6th segment, the first\n     * after a discontinuity, while the audio loader is still loading the 5th segment, before\n     * the discontinuity.\n     *\n     * If the video loader goes ahead and loads and appends the 6th segment, then once the\n     * segment is loaded and processed, both the video and audio timestamp offsets will be\n     * set, since video is used as the primary timing source. This is to ensure content lines\n     * up appropriately, as any modifications to the video timing are reflected by audio when\n     * the video loader sets the audio and video timestamp offsets to the same value. However,\n     * setting the timestamp offset for audio before audio has had a chance to change\n     * timelines will likely lead to desyncing, as the audio loader will append segment 5 with\n     * a timestamp intended to apply to segments from timeline 1 rather than timeline 0.\n     *\n     * CASE 3: When seeking, audio prepares to load a new timeline before video\n     *\n     * Timeline:       0                 1\n     * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n     * Audio Loader:           ^\n     * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9\n     * Video Loader            ^\n     *\n     * In the above example, both audio and video loaders are loading segments from timeline\n     * 0, but imagine that the seek originated from timeline 1.\n     *\n     * When seeking to a new timeline, the timestamp offset will be set based on the expected\n     * segment start of the loaded video segment. In order to maintain sync, the audio loader\n     * must wait for the video loader to load its segment and update both the audio and video\n     * timestamp offsets before it may load and append its own segment. This is the case\n     * whether the seek results in a mismatched segment request (e.g., the audio loader\n     * chooses to load segment 3 and the video loader chooses to load segment 4) or the\n     * loaders choose to load the same segment index from each playlist, as the segments may\n     * not be aligned perfectly, even for matching segment indexes.\n     *\n     * @param {Object} timelinechangeController\n     * @param {number} currentTimeline\n     *        The timeline currently being followed by the loader\n     * @param {number} segmentTimeline\n     *        The timeline of the segment being loaded\n     * @param {('main'|'audio')} loaderType\n     *        The loader type\n     * @param {boolean} audioDisabled\n     *        Whether the audio is disabled for the loader. This should only be true when the\n     *        loader may have muxed audio in its segment, but should not append it, e.g., for\n     *        the main loader when an alternate audio playlist is active.\n     *\n     * @return {boolean}\n     *         Whether the loader should wait for a timeline change from the timeline change\n     *         controller before processing the segment\n     */\n\n    const shouldWaitForTimelineChange = ({\n                                             timelineChangeController,\n                                             currentTimeline,\n                                             segmentTimeline,\n                                             loaderType,\n                                             audioDisabled\n                                         }) => {\n        if (currentTimeline === segmentTimeline) {\n            return false;\n        }\n        if (loaderType === 'audio') {\n            const lastMainTimelineChange = timelineChangeController.lastTimelineChange({\n                type: 'main'\n            }); // Audio loader should wait if:\n            //\n            // * main hasn't had a timeline change yet (thus has not loaded its first segment)\n            // * main hasn't yet changed to the timeline audio is looking to load\n\n            return !lastMainTimelineChange || lastMainTimelineChange.to !== segmentTimeline;\n        } // The main loader only needs to wait for timeline changes if there's demuxed audio.\n        // Otherwise, there's nothing to wait for, since audio would be muxed into the main\n        // loader's segments (or the content is audio/video only and handled by the main\n        // loader).\n\n        if (loaderType === 'main' && audioDisabled) {\n            const pendingAudioTimelineChange = timelineChangeController.pendingTimelineChange({\n                type: 'audio'\n            }); // Main loader should wait for the audio loader if audio is not pending a timeline\n            // change to the current timeline.\n            //\n            // Since the main loader is responsible for setting the timestamp offset for both\n            // audio and video, the main loader must wait for audio to be about to change to its\n            // timeline before setting the offset, otherwise, if audio is behind in loading,\n            // segments from the previous timeline would be adjusted by the new timestamp offset.\n            //\n            // This requirement means that video will not cross a timeline until the audio is\n            // about to cross to it, so that way audio and video will always cross the timeline\n            // together.\n            //\n            // In addition to normal timeline changes, these rules also apply to the start of a\n            // stream (going from a non-existent timeline, -1, to timeline 0). It's important\n            // that these rules apply to the first timeline change because if they did not, it's\n            // possible that the main loader will cross two timelines before the audio loader has\n            // crossed one. Logic may be implemented to handle the startup as a special case, but\n            // it's easier to simply treat all timeline changes the same.\n\n            if (pendingAudioTimelineChange && pendingAudioTimelineChange.to === segmentTimeline) {\n                return false;\n            }\n            return true;\n        }\n        return false;\n    };\n    const mediaDuration = timingInfos => {\n        let maxDuration = 0;\n        ['video', 'audio'].forEach(function (type) {\n            const typeTimingInfo = timingInfos[`${type}TimingInfo`];\n            if (!typeTimingInfo) {\n                return;\n            }\n            const {\n                start,\n                end\n            } = typeTimingInfo;\n            let duration;\n            if (typeof start === 'bigint' || typeof end === 'bigint') {\n                duration = window.BigInt(end) - window.BigInt(start);\n            } else if (typeof start === 'number' && typeof end === 'number') {\n                duration = end - start;\n            }\n            if (typeof duration !== 'undefined' && duration > maxDuration) {\n                maxDuration = duration;\n            }\n        }); // convert back to a number if it is lower than MAX_SAFE_INTEGER\n        // as we only need BigInt when we are above that.\n\n        if (typeof maxDuration === 'bigint' && maxDuration < Number.MAX_SAFE_INTEGER) {\n            maxDuration = Number(maxDuration);\n        }\n        return maxDuration;\n    };\n    const segmentTooLong = ({\n                                segmentDuration,\n                                maxDuration\n                            }) => {\n        // 0 duration segments are most likely due to metadata only segments or a lack of\n        // information.\n        if (!segmentDuration) {\n            return false;\n        } // For HLS:\n        //\n        // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.3.1\n        // The EXTINF duration of each Media Segment in the Playlist\n        // file, when rounded to the nearest integer, MUST be less than or equal\n        // to the target duration; longer segments can trigger playback stalls\n        // or other errors.\n        //\n        // For DASH, the mpd-parser uses the largest reported segment duration as the target\n        // duration. Although that reported duration is occasionally approximate (i.e., not\n        // exact), a strict check may report that a segment is too long more often in DASH.\n\n        return Math.round(segmentDuration) > maxDuration + TIME_FUDGE_FACTOR;\n    };\n    const getTroublesomeSegmentDurationMessage = (segmentInfo, sourceType) => {\n        // Right now we aren't following DASH's timing model exactly, so only perform\n        // this check for HLS content.\n        if (sourceType !== 'hls') {\n            return null;\n        }\n        const segmentDuration = mediaDuration({\n            audioTimingInfo: segmentInfo.audioTimingInfo,\n            videoTimingInfo: segmentInfo.videoTimingInfo\n        }); // Don't report if we lack information.\n        //\n        // If the segment has a duration of 0 it is either a lack of information or a\n        // metadata only segment and shouldn't be reported here.\n\n        if (!segmentDuration) {\n            return null;\n        }\n        const targetDuration = segmentInfo.playlist.targetDuration;\n        const isSegmentWayTooLong = segmentTooLong({\n            segmentDuration,\n            maxDuration: targetDuration * 2\n        });\n        const isSegmentSlightlyTooLong = segmentTooLong({\n            segmentDuration,\n            maxDuration: targetDuration\n        });\n        const segmentTooLongMessage = `Segment with index ${segmentInfo.mediaIndex} ` + `from playlist ${segmentInfo.playlist.id} ` + `has a duration of ${segmentDuration} ` + `when the reported duration is ${segmentInfo.duration} ` + `and the target duration is ${targetDuration}. ` + 'For HLS content, a duration in excess of the target duration may result in ' + 'playback issues. See the HLS specification section on EXT-X-TARGETDURATION for ' + 'more details: ' + 'https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.3.1';\n        if (isSegmentWayTooLong || isSegmentSlightlyTooLong) {\n            return {\n                severity: isSegmentWayTooLong ? 'warn' : 'info',\n                message: segmentTooLongMessage\n            };\n        }\n        return null;\n    };\n    /**\n     * An object that manages segment loading and appending.\n     *\n     * @class SegmentLoader\n     * @param {Object} options required and optional options\n     * @extends videojs.EventTarget\n     */\n\n    class SegmentLoader extends videojs.EventTarget {\n        constructor(settings, options = {}) {\n            super(); // check pre-conditions\n\n            if (!settings) {\n                throw new TypeError('Initialization settings are required');\n            }\n            if (typeof settings.currentTime !== 'function') {\n                throw new TypeError('No currentTime getter specified');\n            }\n            if (!settings.mediaSource) {\n                throw new TypeError('No MediaSource specified');\n            } // public properties\n\n            this.bandwidth = settings.bandwidth;\n            this.throughput = {\n                rate: 0,\n                count: 0\n            };\n            this.roundTrip = NaN;\n            this.resetStats_();\n            this.mediaIndex = null;\n            this.partIndex = null; // private settings\n\n            this.hasPlayed_ = settings.hasPlayed;\n            this.currentTime_ = settings.currentTime;\n            this.seekable_ = settings.seekable;\n            this.seeking_ = settings.seeking;\n            this.duration_ = settings.duration;\n            this.mediaSource_ = settings.mediaSource;\n            this.vhs_ = settings.vhs;\n            this.loaderType_ = settings.loaderType;\n            this.currentMediaInfo_ = void 0;\n            this.startingMediaInfo_ = void 0;\n            this.segmentMetadataTrack_ = settings.segmentMetadataTrack;\n            this.goalBufferLength_ = settings.goalBufferLength;\n            this.sourceType_ = settings.sourceType;\n            this.sourceUpdater_ = settings.sourceUpdater;\n            this.inbandTextTracks_ = settings.inbandTextTracks;\n            this.state_ = 'INIT';\n            this.timelineChangeController_ = settings.timelineChangeController;\n            this.shouldSaveSegmentTimingInfo_ = true;\n            this.parse708captions_ = settings.parse708captions;\n            this.useDtsForTimestampOffset_ = settings.useDtsForTimestampOffset;\n            this.captionServices_ = settings.captionServices;\n            this.exactManifestTimings = settings.exactManifestTimings;\n            this.addMetadataToTextTrack = settings.addMetadataToTextTrack; // private instance variables\n\n            this.checkBufferTimeout_ = null;\n            this.error_ = void 0;\n            this.currentTimeline_ = -1;\n            this.shouldForceTimestampOffsetAfterResync_ = false;\n            this.pendingSegment_ = null;\n            this.xhrOptions_ = null;\n            this.pendingSegments_ = [];\n            this.audioDisabled_ = false;\n            this.isPendingTimestampOffset_ = false; // TODO possibly move gopBuffer and timeMapping info to a separate controller\n\n            this.gopBuffer_ = [];\n            this.timeMapping_ = 0;\n            this.safeAppend_ = false;\n            this.appendInitSegment_ = {\n                audio: true,\n                video: true\n            };\n            this.playlistOfLastInitSegment_ = {\n                audio: null,\n                video: null\n            };\n            this.callQueue_ = []; // If the segment loader prepares to load a segment, but does not have enough\n            // information yet to start the loading process (e.g., if the audio loader wants to\n            // load a segment from the next timeline but the main loader hasn't yet crossed that\n            // timeline), then the load call will be added to the queue until it is ready to be\n            // processed.\n\n            this.loadQueue_ = [];\n            this.metadataQueue_ = {\n                id3: [],\n                caption: []\n            };\n            this.waitingOnRemove_ = false;\n            this.quotaExceededErrorRetryTimeout_ = null; // Fragmented mp4 playback\n\n            this.activeInitSegmentId_ = null;\n            this.initSegments_ = {}; // HLSe playback\n\n            this.cacheEncryptionKeys_ = settings.cacheEncryptionKeys;\n            this.keyCache_ = {};\n            this.decrypter_ = settings.decrypter; // Manages the tracking and generation of sync-points, mappings\n            // between a time in the display time and a segment index within\n            // a playlist\n\n            this.syncController_ = settings.syncController;\n            this.syncPoint_ = {\n                segmentIndex: 0,\n                time: 0\n            };\n            this.transmuxer_ = this.createTransmuxer_();\n            this.triggerSyncInfoUpdate_ = () => this.trigger('syncinfoupdate');\n            this.syncController_.on('syncinfoupdate', this.triggerSyncInfoUpdate_);\n            this.mediaSource_.addEventListener('sourceopen', () => {\n                if (!this.isEndOfStream_()) {\n                    this.ended_ = false;\n                }\n            }); // ...for determining the fetch location\n\n            this.fetchAtBuffer_ = false;\n            this.logger_ = logger(`SegmentLoader[${this.loaderType_}]`);\n            Object.defineProperty(this, 'state', {\n                get() {\n                    return this.state_;\n                },\n                set(newState) {\n                    if (newState !== this.state_) {\n                        this.logger_(`${this.state_} -> ${newState}`);\n                        this.state_ = newState;\n                        this.trigger('statechange');\n                    }\n                }\n            });\n            this.sourceUpdater_.on('ready', () => {\n                if (this.hasEnoughInfoToAppend_()) {\n                    this.processCallQueue_();\n                }\n            }); // Only the main loader needs to listen for pending timeline changes, as the main\n            // loader should wait for audio to be ready to change its timeline so that both main\n            // and audio timelines change together. For more details, see the\n            // shouldWaitForTimelineChange function.\n\n            if (this.loaderType_ === 'main') {\n                this.timelineChangeController_.on('pendingtimelinechange', () => {\n                    if (this.hasEnoughInfoToAppend_()) {\n                        this.processCallQueue_();\n                    }\n                });\n            } // The main loader only listens on pending timeline changes, but the audio loader,\n            // since its loads follow main, needs to listen on timeline changes. For more details,\n            // see the shouldWaitForTimelineChange function.\n\n            if (this.loaderType_ === 'audio') {\n                this.timelineChangeController_.on('timelinechange', () => {\n                    if (this.hasEnoughInfoToLoad_()) {\n                        this.processLoadQueue_();\n                    }\n                    if (this.hasEnoughInfoToAppend_()) {\n                        this.processCallQueue_();\n                    }\n                });\n            }\n        }\n        createTransmuxer_() {\n            return segmentTransmuxer.createTransmuxer({\n                remux: false,\n                alignGopsAtEnd: this.safeAppend_,\n                keepOriginalTimestamps: true,\n                parse708captions: this.parse708captions_,\n                captionServices: this.captionServices_\n            });\n        }\n        /**\n         * reset all of our media stats\n         *\n         * @private\n         */\n\n        resetStats_() {\n            this.mediaBytesTransferred = 0;\n            this.mediaRequests = 0;\n            this.mediaRequestsAborted = 0;\n            this.mediaRequestsTimedout = 0;\n            this.mediaRequestsErrored = 0;\n            this.mediaTransferDuration = 0;\n            this.mediaSecondsLoaded = 0;\n            this.mediaAppends = 0;\n        }\n        /**\n         * dispose of the SegmentLoader and reset to the default state\n         */\n\n        dispose() {\n            this.trigger('dispose');\n            this.state = 'DISPOSED';\n            this.pause();\n            this.abort_();\n            if (this.transmuxer_) {\n                this.transmuxer_.terminate();\n            }\n            this.resetStats_();\n            if (this.checkBufferTimeout_) {\n                window.clearTimeout(this.checkBufferTimeout_);\n            }\n            if (this.syncController_ && this.triggerSyncInfoUpdate_) {\n                this.syncController_.off('syncinfoupdate', this.triggerSyncInfoUpdate_);\n            }\n            this.off();\n        }\n        setAudio(enable) {\n            this.audioDisabled_ = !enable;\n            if (enable) {\n                this.appendInitSegment_.audio = true;\n            } else {\n                // remove current track audio if it gets disabled\n                this.sourceUpdater_.removeAudio(0, this.duration_());\n            }\n        }\n        /**\n         * abort anything that is currently doing on with the SegmentLoader\n         * and reset to a default state\n         */\n\n        abort() {\n            if (this.state !== 'WAITING') {\n                if (this.pendingSegment_) {\n                    this.pendingSegment_ = null;\n                }\n                return;\n            }\n            this.abort_(); // We aborted the requests we were waiting on, so reset the loader's state to READY\n            // since we are no longer \"waiting\" on any requests. XHR callback is not always run\n            // when the request is aborted. This will prevent the loader from being stuck in the\n            // WAITING state indefinitely.\n\n            this.state = 'READY'; // don't wait for buffer check timeouts to begin fetching the\n            // next segment\n\n            if (!this.paused()) {\n                this.monitorBuffer_();\n            }\n        }\n        /**\n         * abort all pending xhr requests and null any pending segements\n         *\n         * @private\n         */\n\n        abort_() {\n            if (this.pendingSegment_ && this.pendingSegment_.abortRequests) {\n                this.pendingSegment_.abortRequests();\n            } // clear out the segment being processed\n\n            this.pendingSegment_ = null;\n            this.callQueue_ = [];\n            this.loadQueue_ = [];\n            this.metadataQueue_.id3 = [];\n            this.metadataQueue_.caption = [];\n            this.timelineChangeController_.clearPendingTimelineChange(this.loaderType_);\n            this.waitingOnRemove_ = false;\n            window.clearTimeout(this.quotaExceededErrorRetryTimeout_);\n            this.quotaExceededErrorRetryTimeout_ = null;\n        }\n        checkForAbort_(requestId) {\n            // If the state is APPENDING, then aborts will not modify the state, meaning the first\n            // callback that happens should reset the state to READY so that loading can continue.\n            if (this.state === 'APPENDING' && !this.pendingSegment_) {\n                this.state = 'READY';\n                return true;\n            }\n            if (!this.pendingSegment_ || this.pendingSegment_.requestId !== requestId) {\n                return true;\n            }\n            return false;\n        }\n        /**\n         * set an error on the segment loader and null out any pending segements\n         *\n         * @param {Error} error the error to set on the SegmentLoader\n         * @return {Error} the error that was set or that is currently set\n         */\n\n        error(error) {\n            if (typeof error !== 'undefined') {\n                this.logger_('error occurred:', error);\n                this.error_ = error;\n            }\n            this.pendingSegment_ = null;\n            return this.error_;\n        }\n        endOfStream() {\n            this.ended_ = true;\n            if (this.transmuxer_) {\n                // need to clear out any cached data to prepare for the new segment\n                segmentTransmuxer.reset(this.transmuxer_);\n            }\n            this.gopBuffer_.length = 0;\n            this.pause();\n            this.trigger('ended');\n        }\n        /**\n         * Indicates which time ranges are buffered\n         *\n         * @return {TimeRange}\n         *         TimeRange object representing the current buffered ranges\n         */\n\n        buffered_() {\n            const trackInfo = this.getMediaInfo_();\n            if (!this.sourceUpdater_ || !trackInfo) {\n                return createTimeRanges();\n            }\n            if (this.loaderType_ === 'main') {\n                const {\n                    hasAudio,\n                    hasVideo,\n                    isMuxed\n                } = trackInfo;\n                if (hasVideo && hasAudio && !this.audioDisabled_ && !isMuxed) {\n                    return this.sourceUpdater_.buffered();\n                }\n                if (hasVideo) {\n                    return this.sourceUpdater_.videoBuffered();\n                }\n            } // One case that can be ignored for now is audio only with alt audio,\n            // as we don't yet have proper support for that.\n\n            return this.sourceUpdater_.audioBuffered();\n        }\n        /**\n         * Gets and sets init segment for the provided map\n         *\n         * @param {Object} map\n         *        The map object representing the init segment to get or set\n         * @param {boolean=} set\n         *        If true, the init segment for the provided map should be saved\n         * @return {Object}\n         *         map object for desired init segment\n         */\n\n        initSegmentForMap(map, set = false) {\n            if (!map) {\n                return null;\n            }\n            const id = initSegmentId(map);\n            let storedMap = this.initSegments_[id];\n            if (set && !storedMap && map.bytes) {\n                this.initSegments_[id] = storedMap = {\n                    resolvedUri: map.resolvedUri,\n                    byterange: map.byterange,\n                    bytes: map.bytes,\n                    tracks: map.tracks,\n                    timescales: map.timescales\n                };\n            }\n            return storedMap || map;\n        }\n        /**\n         * Gets and sets key for the provided key\n         *\n         * @param {Object} key\n         *        The key object representing the key to get or set\n         * @param {boolean=} set\n         *        If true, the key for the provided key should be saved\n         * @return {Object}\n         *         Key object for desired key\n         */\n\n        segmentKey(key, set = false) {\n            if (!key) {\n                return null;\n            }\n            const id = segmentKeyId(key);\n            let storedKey = this.keyCache_[id]; // TODO: We should use the HTTP Expires header to invalidate our cache per\n            // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-6.2.3\n\n            if (this.cacheEncryptionKeys_ && set && !storedKey && key.bytes) {\n                this.keyCache_[id] = storedKey = {\n                    resolvedUri: key.resolvedUri,\n                    bytes: key.bytes\n                };\n            }\n            const result = {\n                resolvedUri: (storedKey || key).resolvedUri\n            };\n            if (storedKey) {\n                result.bytes = storedKey.bytes;\n            }\n            return result;\n        }\n        /**\n         * Returns true if all configuration required for loading is present, otherwise false.\n         *\n         * @return {boolean} True if the all configuration is ready for loading\n         * @private\n         */\n\n        couldBeginLoading_() {\n            return this.playlist_ && !this.paused();\n        }\n        /**\n         * load a playlist and start to fill the buffer\n         */\n\n        load() {\n            // un-pause\n            this.monitorBuffer_(); // if we don't have a playlist yet, keep waiting for one to be\n            // specified\n\n            if (!this.playlist_) {\n                return;\n            } // if all the configuration is ready, initialize and begin loading\n\n            if (this.state === 'INIT' && this.couldBeginLoading_()) {\n                return this.init_();\n            } // if we're in the middle of processing a segment already, don't\n            // kick off an additional segment request\n\n            if (!this.couldBeginLoading_() || this.state !== 'READY' && this.state !== 'INIT') {\n                return;\n            }\n            this.state = 'READY';\n        }\n        /**\n         * Once all the starting parameters have been specified, begin\n         * operation. This method should only be invoked from the INIT\n         * state.\n         *\n         * @private\n         */\n\n        init_() {\n            this.state = 'READY'; // if this is the audio segment loader, and it hasn't been inited before, then any old\n            // audio data from the muxed content should be removed\n\n            this.resetEverything();\n            return this.monitorBuffer_();\n        }\n        /**\n         * set a playlist on the segment loader\n         *\n         * @param {PlaylistLoader} media the playlist to set on the segment loader\n         */\n\n        playlist(newPlaylist, options = {}) {\n            if (!newPlaylist) {\n                return;\n            }\n            const oldPlaylist = this.playlist_;\n            const segmentInfo = this.pendingSegment_;\n            this.playlist_ = newPlaylist;\n            this.xhrOptions_ = options; // when we haven't started playing yet, the start of a live playlist\n            // is always our zero-time so force a sync update each time the playlist\n            // is refreshed from the server\n            //\n            // Use the INIT state to determine if playback has started, as the playlist sync info\n            // should be fixed once requests begin (as sync points are generated based on sync\n            // info), but not before then.\n\n            if (this.state === 'INIT') {\n                newPlaylist.syncInfo = {\n                    mediaSequence: newPlaylist.mediaSequence,\n                    time: 0\n                }; // Setting the date time mapping means mapping the program date time (if available)\n                // to time 0 on the player's timeline. The playlist's syncInfo serves a similar\n                // purpose, mapping the initial mediaSequence to time zero. Since the syncInfo can\n                // be updated as the playlist is refreshed before the loader starts loading, the\n                // program date time mapping needs to be updated as well.\n                //\n                // This mapping is only done for the main loader because a program date time should\n                // map equivalently between playlists.\n\n                if (this.loaderType_ === 'main') {\n                    this.syncController_.setDateTimeMappingForStart(newPlaylist);\n                }\n            }\n            let oldId = null;\n            if (oldPlaylist) {\n                if (oldPlaylist.id) {\n                    oldId = oldPlaylist.id;\n                } else if (oldPlaylist.uri) {\n                    oldId = oldPlaylist.uri;\n                }\n            }\n            this.logger_(`playlist update [${oldId} => ${newPlaylist.id || newPlaylist.uri}]`);\n            this.syncController_.updateMediaSequenceMap(newPlaylist, this.currentTime_(), this.loaderType_); // in VOD, this is always a rendition switch (or we updated our syncInfo above)\n            // in LIVE, we always want to update with new playlists (including refreshes)\n\n            this.trigger('syncinfoupdate'); // if we were unpaused but waiting for a playlist, start\n            // buffering now\n\n            if (this.state === 'INIT' && this.couldBeginLoading_()) {\n                return this.init_();\n            }\n            if (!oldPlaylist || oldPlaylist.uri !== newPlaylist.uri) {\n                if (this.mediaIndex !== null) {\n                    // we must reset/resync the segment loader when we switch renditions and\n                    // the segment loader is already synced to the previous rendition\n                    // We only want to reset the loader here for LLHLS playback, as resetLoader sets fetchAtBuffer_\n                    // to false, resulting in fetching segments at currentTime and causing repeated\n                    // same-segment requests on playlist change. This erroneously drives up the playback watcher\n                    // stalled segment count, as re-requesting segments at the currentTime or browser cached segments\n                    // will not change the buffer.\n                    // Reference for LLHLS fixes: https://github.com/videojs/http-streaming/pull/1201\n                    const isLLHLS = !newPlaylist.endList && typeof newPlaylist.partTargetDuration === 'number';\n                    if (isLLHLS) {\n                        this.resetLoader();\n                    } else {\n                        this.resyncLoader();\n                    }\n                }\n                this.currentMediaInfo_ = void 0;\n                this.trigger('playlistupdate'); // the rest of this function depends on `oldPlaylist` being defined\n\n                return;\n            } // we reloaded the same playlist so we are in a live scenario\n            // and we will likely need to adjust the mediaIndex\n\n            const mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence;\n            this.logger_(`live window shift [${mediaSequenceDiff}]`); // update the mediaIndex on the SegmentLoader\n            // this is important because we can abort a request and this value must be\n            // equal to the last appended mediaIndex\n\n            if (this.mediaIndex !== null) {\n                this.mediaIndex -= mediaSequenceDiff; // this can happen if we are going to load the first segment, but get a playlist\n                // update during that. mediaIndex would go from 0 to -1 if mediaSequence in the\n                // new playlist was incremented by 1.\n\n                if (this.mediaIndex < 0) {\n                    this.mediaIndex = null;\n                    this.partIndex = null;\n                } else {\n                    const segment = this.playlist_.segments[this.mediaIndex]; // partIndex should remain the same for the same segment\n                    // unless parts fell off of the playlist for this segment.\n                    // In that case we need to reset partIndex and resync\n\n                    if (this.partIndex && (!segment.parts || !segment.parts.length || !segment.parts[this.partIndex])) {\n                        const mediaIndex = this.mediaIndex;\n                        this.logger_(`currently processing part (index ${this.partIndex}) no longer exists.`);\n                        this.resetLoader(); // We want to throw away the partIndex and the data associated with it,\n                        // as the part was dropped from our current playlists segment.\n                        // The mediaIndex will still be valid so keep that around.\n\n                        this.mediaIndex = mediaIndex;\n                    }\n                }\n            } // update the mediaIndex on the SegmentInfo object\n            // this is important because we will update this.mediaIndex with this value\n            // in `handleAppendsDone_` after the segment has been successfully appended\n\n            if (segmentInfo) {\n                segmentInfo.mediaIndex -= mediaSequenceDiff;\n                if (segmentInfo.mediaIndex < 0) {\n                    segmentInfo.mediaIndex = null;\n                    segmentInfo.partIndex = null;\n                } else {\n                    // we need to update the referenced segment so that timing information is\n                    // saved for the new playlist's segment, however, if the segment fell off the\n                    // playlist, we can leave the old reference and just lose the timing info\n                    if (segmentInfo.mediaIndex >= 0) {\n                        segmentInfo.segment = newPlaylist.segments[segmentInfo.mediaIndex];\n                    }\n                    if (segmentInfo.partIndex >= 0 && segmentInfo.segment.parts) {\n                        segmentInfo.part = segmentInfo.segment.parts[segmentInfo.partIndex];\n                    }\n                }\n            }\n            this.syncController_.saveExpiredSegmentInfo(oldPlaylist, newPlaylist);\n        }\n        /**\n         * Prevent the loader from fetching additional segments. If there\n         * is a segment request outstanding, it will finish processing\n         * before the loader halts. A segment loader can be unpaused by\n         * calling load().\n         */\n\n        pause() {\n            if (this.checkBufferTimeout_) {\n                window.clearTimeout(this.checkBufferTimeout_);\n                this.checkBufferTimeout_ = null;\n            }\n        }\n        /**\n         * Returns whether the segment loader is fetching additional\n         * segments when given the opportunity. This property can be\n         * modified through calls to pause() and load().\n         */\n\n        paused() {\n            return this.checkBufferTimeout_ === null;\n        }\n        /**\n         * Delete all the buffered data and reset the SegmentLoader\n         *\n         * @param {Function} [done] an optional callback to be executed when the remove\n         * operation is complete\n         */\n\n        resetEverything(done) {\n            this.ended_ = false;\n            this.activeInitSegmentId_ = null;\n            this.appendInitSegment_ = {\n                audio: true,\n                video: true\n            };\n            this.resetLoader(); // remove from 0, the earliest point, to Infinity, to signify removal of everything.\n            // VTT Segment Loader doesn't need to do anything but in the regular SegmentLoader,\n            // we then clamp the value to duration if necessary.\n\n            this.remove(0, Infinity, done); // clears fmp4 captions\n\n            if (this.transmuxer_) {\n                this.transmuxer_.postMessage({\n                    action: 'clearAllMp4Captions'\n                }); // reset the cache in the transmuxer\n\n                this.transmuxer_.postMessage({\n                    action: 'reset'\n                });\n            }\n        }\n        /**\n         * Force the SegmentLoader to resync and start loading around the currentTime instead\n         * of starting at the end of the buffer\n         *\n         * Useful for fast quality changes\n         */\n\n        resetLoader() {\n            this.fetchAtBuffer_ = false;\n            this.resyncLoader();\n        }\n        /**\n         * Force the SegmentLoader to restart synchronization and make a conservative guess\n         * before returning to the simple walk-forward method\n         */\n\n        resyncLoader() {\n            if (this.transmuxer_) {\n                // need to clear out any cached data to prepare for the new segment\n                segmentTransmuxer.reset(this.transmuxer_);\n            }\n            this.mediaIndex = null;\n            this.partIndex = null;\n            this.syncPoint_ = null;\n            this.isPendingTimestampOffset_ = false;\n            this.shouldForceTimestampOffsetAfterResync_ = true;\n            this.callQueue_ = [];\n            this.loadQueue_ = [];\n            this.metadataQueue_.id3 = [];\n            this.metadataQueue_.caption = [];\n            this.abort();\n            if (this.transmuxer_) {\n                this.transmuxer_.postMessage({\n                    action: 'clearParsedMp4Captions'\n                });\n            }\n        }\n        /**\n         * Remove any data in the source buffer between start and end times\n         *\n         * @param {number} start - the start time of the region to remove from the buffer\n         * @param {number} end - the end time of the region to remove from the buffer\n         * @param {Function} [done] - an optional callback to be executed when the remove\n         * @param {boolean} force - force all remove operations to happen\n         * operation is complete\n         */\n\n        remove(start, end, done = () => {}, force = false) {\n            // clamp end to duration if we need to remove everything.\n            // This is due to a browser bug that causes issues if we remove to Infinity.\n            // videojs/videojs-contrib-hls#1225\n            if (end === Infinity) {\n                end = this.duration_();\n            } // skip removes that would throw an error\n            // commonly happens during a rendition switch at the start of a video\n            // from start 0 to end 0\n\n            if (end <= start) {\n                this.logger_('skipping remove because end ${end} is <= start ${start}');\n                return;\n            }\n            if (!this.sourceUpdater_ || !this.getMediaInfo_()) {\n                this.logger_('skipping remove because no source updater or starting media info'); // nothing to remove if we haven't processed any media\n\n                return;\n            } // set it to one to complete this function's removes\n\n            let removesRemaining = 1;\n            const removeFinished = () => {\n                removesRemaining--;\n                if (removesRemaining === 0) {\n                    done();\n                }\n            };\n            if (force || !this.audioDisabled_) {\n                removesRemaining++;\n                this.sourceUpdater_.removeAudio(start, end, removeFinished);\n            } // While it would be better to only remove video if the main loader has video, this\n            // should be safe with audio only as removeVideo will call back even if there's no\n            // video buffer.\n            //\n            // In theory we can check to see if there's video before calling the remove, but in\n            // the event that we're switching between renditions and from video to audio only\n            // (when we add support for that), we may need to clear the video contents despite\n            // what the new media will contain.\n\n            if (force || this.loaderType_ === 'main') {\n                this.gopBuffer_ = removeGopBuffer(this.gopBuffer_, start, end, this.timeMapping_);\n                removesRemaining++;\n                this.sourceUpdater_.removeVideo(start, end, removeFinished);\n            } // remove any captions and ID3 tags\n\n            for (const track in this.inbandTextTracks_) {\n                removeCuesFromTrack(start, end, this.inbandTextTracks_[track]);\n            }\n            removeCuesFromTrack(start, end, this.segmentMetadataTrack_); // finished this function's removes\n\n            removeFinished();\n        }\n        /**\n         * (re-)schedule monitorBufferTick_ to run as soon as possible\n         *\n         * @private\n         */\n\n        monitorBuffer_() {\n            if (this.checkBufferTimeout_) {\n                window.clearTimeout(this.checkBufferTimeout_);\n            }\n            this.checkBufferTimeout_ = window.setTimeout(this.monitorBufferTick_.bind(this), 1);\n        }\n        /**\n         * As long as the SegmentLoader is in the READY state, periodically\n         * invoke fillBuffer_().\n         *\n         * @private\n         */\n\n        monitorBufferTick_() {\n            if (this.state === 'READY') {\n                this.fillBuffer_();\n            }\n            if (this.checkBufferTimeout_) {\n                window.clearTimeout(this.checkBufferTimeout_);\n            }\n            this.checkBufferTimeout_ = window.setTimeout(this.monitorBufferTick_.bind(this), CHECK_BUFFER_DELAY);\n        }\n        /**\n         * fill the buffer with segements unless the sourceBuffers are\n         * currently updating\n         *\n         * Note: this function should only ever be called by monitorBuffer_\n         * and never directly\n         *\n         * @private\n         */\n\n        fillBuffer_() {\n            // TODO since the source buffer maintains a queue, and we shouldn't call this function\n            // except when we're ready for the next segment, this check can most likely be removed\n            if (this.sourceUpdater_.updating()) {\n                return;\n            } // see if we need to begin loading immediately\n\n            const segmentInfo = this.chooseNextRequest_();\n            if (!segmentInfo) {\n                return;\n            }\n            if (typeof segmentInfo.timestampOffset === 'number') {\n                this.isPendingTimestampOffset_ = false;\n                this.timelineChangeController_.pendingTimelineChange({\n                    type: this.loaderType_,\n                    from: this.currentTimeline_,\n                    to: segmentInfo.timeline\n                });\n            }\n            this.loadSegment_(segmentInfo);\n        }\n        /**\n         * Determines if we should call endOfStream on the media source based\n         * on the state of the buffer or if appened segment was the final\n         * segment in the playlist.\n         *\n         * @param {number} [mediaIndex] the media index of segment we last appended\n         * @param {Object} [playlist] a media playlist object\n         * @return {boolean} do we need to call endOfStream on the MediaSource\n         */\n\n        isEndOfStream_(mediaIndex = this.mediaIndex, playlist = this.playlist_, partIndex = this.partIndex) {\n            if (!playlist || !this.mediaSource_) {\n                return false;\n            }\n            const segment = typeof mediaIndex === 'number' && playlist.segments[mediaIndex]; // mediaIndex is zero based but length is 1 based\n\n            const appendedLastSegment = mediaIndex + 1 === playlist.segments.length; // true if there are no parts, or this is the last part.\n\n            const appendedLastPart = !segment || !segment.parts || partIndex + 1 === segment.parts.length; // if we've buffered to the end of the video, we need to call endOfStream\n            // so that MediaSources can trigger the `ended` event when it runs out of\n            // buffered data instead of waiting for me\n\n            return playlist.endList && this.mediaSource_.readyState === 'open' && appendedLastSegment && appendedLastPart;\n        }\n        /**\n         * Determines what request should be made given current segment loader state.\n         *\n         * @return {Object} a request object that describes the segment/part to load\n         */\n\n        chooseNextRequest_() {\n            const buffered = this.buffered_();\n            const bufferedEnd = lastBufferedEnd(buffered) || 0;\n            const bufferedTime = timeAheadOf(buffered, this.currentTime_());\n            const preloaded = !this.hasPlayed_() && bufferedTime >= 1;\n            const haveEnoughBuffer = bufferedTime >= this.goalBufferLength_();\n            const segments = this.playlist_.segments; // return no segment if:\n            // 1. we don't have segments\n            // 2. The video has not yet played and we already downloaded a segment\n            // 3. we already have enough buffered time\n\n            if (!segments.length || preloaded || haveEnoughBuffer) {\n                return null;\n            }\n            this.syncPoint_ = this.syncPoint_ || this.syncController_.getSyncPoint(this.playlist_, this.duration_(), this.currentTimeline_, this.currentTime_(), this.loaderType_);\n            const next = {\n                partIndex: null,\n                mediaIndex: null,\n                startOfSegment: null,\n                playlist: this.playlist_,\n                isSyncRequest: Boolean(!this.syncPoint_)\n            };\n            if (next.isSyncRequest) {\n                next.mediaIndex = getSyncSegmentCandidate(this.currentTimeline_, segments, bufferedEnd);\n                this.logger_(`choose next request. Can not find sync point. Fallback to media Index: ${next.mediaIndex}`);\n            } else if (this.mediaIndex !== null) {\n                const segment = segments[this.mediaIndex];\n                const partIndex = typeof this.partIndex === 'number' ? this.partIndex : -1;\n                next.startOfSegment = segment.end ? segment.end : bufferedEnd;\n                if (segment.parts && segment.parts[partIndex + 1]) {\n                    next.mediaIndex = this.mediaIndex;\n                    next.partIndex = partIndex + 1;\n                } else {\n                    next.mediaIndex = this.mediaIndex + 1;\n                }\n            } else {\n                // Find the segment containing the end of the buffer or current time.\n                const {\n                    segmentIndex,\n                    startTime,\n                    partIndex\n                } = Playlist.getMediaInfoForTime({\n                    exactManifestTimings: this.exactManifestTimings,\n                    playlist: this.playlist_,\n                    currentTime: this.fetchAtBuffer_ ? bufferedEnd : this.currentTime_(),\n                    startingPartIndex: this.syncPoint_.partIndex,\n                    startingSegmentIndex: this.syncPoint_.segmentIndex,\n                    startTime: this.syncPoint_.time\n                });\n                next.getMediaInfoForTime = this.fetchAtBuffer_ ? `bufferedEnd ${bufferedEnd}` : `currentTime ${this.currentTime_()}`;\n                next.mediaIndex = segmentIndex;\n                next.startOfSegment = startTime;\n                next.partIndex = partIndex;\n                this.logger_(`choose next request. Playlist switched and we have a sync point. Media Index: ${next.mediaIndex} `);\n            }\n            const nextSegment = segments[next.mediaIndex];\n            let nextPart = nextSegment && typeof next.partIndex === 'number' && nextSegment.parts && nextSegment.parts[next.partIndex]; // if the next segment index is invalid or\n            // the next partIndex is invalid do not choose a next segment.\n\n            if (!nextSegment || typeof next.partIndex === 'number' && !nextPart) {\n                return null;\n            } // if the next segment has parts, and we don't have a partIndex.\n            // Set partIndex to 0\n\n            if (typeof next.partIndex !== 'number' && nextSegment.parts) {\n                next.partIndex = 0;\n                nextPart = nextSegment.parts[0];\n            } // independentSegments applies to every segment in a playlist. If independentSegments appears in a main playlist,\n            // it applies to each segment in each media playlist.\n            // https://datatracker.ietf.org/doc/html/draft-pantos-http-live-streaming-23#section-4.3.5.1\n\n            const hasIndependentSegments = this.vhs_.playlists && this.vhs_.playlists.main && this.vhs_.playlists.main.independentSegments || this.playlist_.independentSegments; // if we have no buffered data then we need to make sure\n            // that the next part we append is \"independent\" if possible.\n            // So we check if the previous part is independent, and request\n            // it if it is.\n\n            if (!bufferedTime && nextPart && !hasIndependentSegments && !nextPart.independent) {\n                if (next.partIndex === 0) {\n                    const lastSegment = segments[next.mediaIndex - 1];\n                    const lastSegmentLastPart = lastSegment.parts && lastSegment.parts.length && lastSegment.parts[lastSegment.parts.length - 1];\n                    if (lastSegmentLastPart && lastSegmentLastPart.independent) {\n                        next.mediaIndex -= 1;\n                        next.partIndex = lastSegment.parts.length - 1;\n                        next.independent = 'previous segment';\n                    }\n                } else if (nextSegment.parts[next.partIndex - 1].independent) {\n                    next.partIndex -= 1;\n                    next.independent = 'previous part';\n                }\n            }\n            const ended = this.mediaSource_ && this.mediaSource_.readyState === 'ended'; // do not choose a next segment if all of the following:\n            // 1. this is the last segment in the playlist\n            // 2. end of stream has been called on the media source already\n            // 3. the player is not seeking\n\n            if (next.mediaIndex >= segments.length - 1 && ended && !this.seeking_()) {\n                return null;\n            }\n            if (this.shouldForceTimestampOffsetAfterResync_) {\n                this.shouldForceTimestampOffsetAfterResync_ = false;\n                next.forceTimestampOffset = true;\n                this.logger_('choose next request. Force timestamp offset after loader resync');\n            }\n            return this.generateSegmentInfo_(next);\n        }\n        generateSegmentInfo_(options) {\n            const {\n                independent,\n                playlist,\n                mediaIndex,\n                startOfSegment,\n                isSyncRequest,\n                partIndex,\n                forceTimestampOffset,\n                getMediaInfoForTime\n            } = options;\n            const segment = playlist.segments[mediaIndex];\n            const part = typeof partIndex === 'number' && segment.parts[partIndex];\n            const segmentInfo = {\n                requestId: 'segment-loader-' + Math.random(),\n                // resolve the segment URL relative to the playlist\n                uri: part && part.resolvedUri || segment.resolvedUri,\n                // the segment's mediaIndex at the time it was requested\n                mediaIndex,\n                partIndex: part ? partIndex : null,\n                // whether or not to update the SegmentLoader's state with this\n                // segment's mediaIndex\n                isSyncRequest,\n                startOfSegment,\n                // the segment's playlist\n                playlist,\n                // unencrypted bytes of the segment\n                bytes: null,\n                // when a key is defined for this segment, the encrypted bytes\n                encryptedBytes: null,\n                // The target timestampOffset for this segment when we append it\n                // to the source buffer\n                timestampOffset: null,\n                // The timeline that the segment is in\n                timeline: segment.timeline,\n                // The expected duration of the segment in seconds\n                duration: part && part.duration || segment.duration,\n                // retain the segment in case the playlist updates while doing an async process\n                segment,\n                part,\n                byteLength: 0,\n                transmuxer: this.transmuxer_,\n                // type of getMediaInfoForTime that was used to get this segment\n                getMediaInfoForTime,\n                independent\n            };\n            const overrideCheck = typeof forceTimestampOffset !== 'undefined' ? forceTimestampOffset : this.isPendingTimestampOffset_;\n            segmentInfo.timestampOffset = this.timestampOffsetForSegment_({\n                segmentTimeline: segment.timeline,\n                currentTimeline: this.currentTimeline_,\n                startOfSegment,\n                buffered: this.buffered_(),\n                overrideCheck\n            });\n            const audioBufferedEnd = lastBufferedEnd(this.sourceUpdater_.audioBuffered());\n            if (typeof audioBufferedEnd === 'number') {\n                // since the transmuxer is using the actual timing values, but the buffer is\n                // adjusted by the timestamp offset, we must adjust the value here\n                segmentInfo.audioAppendStart = audioBufferedEnd - this.sourceUpdater_.audioTimestampOffset();\n            }\n            if (this.sourceUpdater_.videoBuffered().length) {\n                segmentInfo.gopsToAlignWith = gopsSafeToAlignWith(this.gopBuffer_,\n                    // since the transmuxer is using the actual timing values, but the time is\n                    // adjusted by the timestmap offset, we must adjust the value here\n                    this.currentTime_() - this.sourceUpdater_.videoTimestampOffset(), this.timeMapping_);\n            }\n            return segmentInfo;\n        } // get the timestampoffset for a segment,\n        // added so that vtt segment loader can override and prevent\n        // adding timestamp offsets.\n\n        timestampOffsetForSegment_(options) {\n            return timestampOffsetForSegment(options);\n        }\n        /**\n         * Determines if the network has enough bandwidth to complete the current segment\n         * request in a timely manner. If not, the request will be aborted early and bandwidth\n         * updated to trigger a playlist switch.\n         *\n         * @param {Object} stats\n         *        Object containing stats about the request timing and size\n         * @private\n         */\n\n        earlyAbortWhenNeeded_(stats) {\n            if (this.vhs_.tech_.paused() ||\n                // Don't abort if the current playlist is on the lowestEnabledRendition\n                // TODO: Replace using timeout with a boolean indicating whether this playlist is\n                //       the lowestEnabledRendition.\n                !this.xhrOptions_.timeout ||\n                // Don't abort if we have no bandwidth information to estimate segment sizes\n                !this.playlist_.attributes.BANDWIDTH) {\n                return;\n            } // Wait at least 1 second since the first byte of data has been received before\n            // using the calculated bandwidth from the progress event to allow the bitrate\n            // to stabilize\n\n            if (Date.now() - (stats.firstBytesReceivedAt || Date.now()) < 1000) {\n                return;\n            }\n            const currentTime = this.currentTime_();\n            const measuredBandwidth = stats.bandwidth;\n            const segmentDuration = this.pendingSegment_.duration;\n            const requestTimeRemaining = Playlist.estimateSegmentRequestTime(segmentDuration, measuredBandwidth, this.playlist_, stats.bytesReceived); // Subtract 1 from the timeUntilRebuffer so we still consider an early abort\n            // if we are only left with less than 1 second when the request completes.\n            // A negative timeUntilRebuffering indicates we are already rebuffering\n\n            const timeUntilRebuffer$1 = timeUntilRebuffer(this.buffered_(), currentTime, this.vhs_.tech_.playbackRate()) - 1; // Only consider aborting early if the estimated time to finish the download\n            // is larger than the estimated time until the player runs out of forward buffer\n\n            if (requestTimeRemaining <= timeUntilRebuffer$1) {\n                return;\n            }\n            const switchCandidate = minRebufferMaxBandwidthSelector({\n                main: this.vhs_.playlists.main,\n                currentTime,\n                bandwidth: measuredBandwidth,\n                duration: this.duration_(),\n                segmentDuration,\n                timeUntilRebuffer: timeUntilRebuffer$1,\n                currentTimeline: this.currentTimeline_,\n                syncController: this.syncController_\n            });\n            if (!switchCandidate) {\n                return;\n            }\n            const rebufferingImpact = requestTimeRemaining - timeUntilRebuffer$1;\n            const timeSavedBySwitching = rebufferingImpact - switchCandidate.rebufferingImpact;\n            let minimumTimeSaving = 0.5; // If we are already rebuffering, increase the amount of variance we add to the\n            // potential round trip time of the new request so that we are not too aggressive\n            // with switching to a playlist that might save us a fraction of a second.\n\n            if (timeUntilRebuffer$1 <= TIME_FUDGE_FACTOR) {\n                minimumTimeSaving = 1;\n            }\n            if (!switchCandidate.playlist || switchCandidate.playlist.uri === this.playlist_.uri || timeSavedBySwitching < minimumTimeSaving) {\n                return;\n            } // set the bandwidth to that of the desired playlist being sure to scale by\n            // BANDWIDTH_VARIANCE and add one so the playlist selector does not exclude it\n            // don't trigger a bandwidthupdate as the bandwidth is artifial\n\n            this.bandwidth = switchCandidate.playlist.attributes.BANDWIDTH * Config.BANDWIDTH_VARIANCE + 1;\n            this.trigger('earlyabort');\n        }\n        handleAbort_(segmentInfo) {\n            this.logger_(`Aborting ${segmentInfoString(segmentInfo)}`);\n            this.mediaRequestsAborted += 1;\n        }\n        /**\n         * XHR `progress` event handler\n         *\n         * @param {Event}\n         *        The XHR `progress` event\n         * @param {Object} simpleSegment\n         *        A simplified segment object copy\n         * @private\n         */\n\n        handleProgress_(event, simpleSegment) {\n            this.earlyAbortWhenNeeded_(simpleSegment.stats);\n            if (this.checkForAbort_(simpleSegment.requestId)) {\n                return;\n            }\n            this.trigger('progress');\n        }\n        handleTrackInfo_(simpleSegment, trackInfo) {\n            this.earlyAbortWhenNeeded_(simpleSegment.stats);\n            if (this.checkForAbort_(simpleSegment.requestId)) {\n                return;\n            }\n            if (this.checkForIllegalMediaSwitch(trackInfo)) {\n                return;\n            }\n            trackInfo = trackInfo || {}; // When we have track info, determine what media types this loader is dealing with.\n            // Guard against cases where we're not getting track info at all until we are\n            // certain that all streams will provide it.\n\n            if (!shallowEqual(this.currentMediaInfo_, trackInfo)) {\n                this.appendInitSegment_ = {\n                    audio: true,\n                    video: true\n                };\n                this.startingMediaInfo_ = trackInfo;\n                this.currentMediaInfo_ = trackInfo;\n                this.logger_('trackinfo update', trackInfo);\n                this.trigger('trackinfo');\n            } // trackinfo may cause an abort if the trackinfo\n            // causes a codec change to an unsupported codec.\n\n            if (this.checkForAbort_(simpleSegment.requestId)) {\n                return;\n            } // set trackinfo on the pending segment so that\n            // it can append.\n\n            this.pendingSegment_.trackInfo = trackInfo; // check if any calls were waiting on the track info\n\n            if (this.hasEnoughInfoToAppend_()) {\n                this.processCallQueue_();\n            }\n        }\n        handleTimingInfo_(simpleSegment, mediaType, timeType, time) {\n            this.earlyAbortWhenNeeded_(simpleSegment.stats);\n            if (this.checkForAbort_(simpleSegment.requestId)) {\n                return;\n            }\n            const segmentInfo = this.pendingSegment_;\n            const timingInfoProperty = timingInfoPropertyForMedia(mediaType);\n            segmentInfo[timingInfoProperty] = segmentInfo[timingInfoProperty] || {};\n            segmentInfo[timingInfoProperty][timeType] = time;\n            this.logger_(`timinginfo: ${mediaType} - ${timeType} - ${time}`); // check if any calls were waiting on the timing info\n\n            if (this.hasEnoughInfoToAppend_()) {\n                this.processCallQueue_();\n            }\n        }\n        handleCaptions_(simpleSegment, captionData) {\n            this.earlyAbortWhenNeeded_(simpleSegment.stats);\n            if (this.checkForAbort_(simpleSegment.requestId)) {\n                return;\n            } // This could only happen with fmp4 segments, but\n            // should still not happen in general\n\n            if (captionData.length === 0) {\n                this.logger_('SegmentLoader received no captions from a caption event');\n                return;\n            }\n            const segmentInfo = this.pendingSegment_; // Wait until we have some video data so that caption timing\n            // can be adjusted by the timestamp offset\n\n            if (!segmentInfo.hasAppendedData_) {\n                this.metadataQueue_.caption.push(this.handleCaptions_.bind(this, simpleSegment, captionData));\n                return;\n            }\n            const timestampOffset = this.sourceUpdater_.videoTimestampOffset() === null ? this.sourceUpdater_.audioTimestampOffset() : this.sourceUpdater_.videoTimestampOffset();\n            const captionTracks = {}; // get total start/end and captions for each track/stream\n\n            captionData.forEach(caption => {\n                // caption.stream is actually a track name...\n                // set to the existing values in tracks or default values\n                captionTracks[caption.stream] = captionTracks[caption.stream] || {\n                    // Infinity, as any other value will be less than this\n                    startTime: Infinity,\n                    captions: [],\n                    // 0 as an other value will be more than this\n                    endTime: 0\n                };\n                const captionTrack = captionTracks[caption.stream];\n                captionTrack.startTime = Math.min(captionTrack.startTime, caption.startTime + timestampOffset);\n                captionTrack.endTime = Math.max(captionTrack.endTime, caption.endTime + timestampOffset);\n                captionTrack.captions.push(caption);\n            });\n            Object.keys(captionTracks).forEach(trackName => {\n                const {\n                    startTime,\n                    endTime,\n                    captions\n                } = captionTracks[trackName];\n                const inbandTextTracks = this.inbandTextTracks_;\n                this.logger_(`adding cues from ${startTime} -> ${endTime} for ${trackName}`);\n                createCaptionsTrackIfNotExists(inbandTextTracks, this.vhs_.tech_, trackName); // clear out any cues that start and end at the same time period for the same track.\n                // We do this because a rendition change that also changes the timescale for captions\n                // will result in captions being re-parsed for certain segments. If we add them again\n                // without clearing we will have two of the same captions visible.\n\n                removeCuesFromTrack(startTime, endTime, inbandTextTracks[trackName]);\n                addCaptionData({\n                    captionArray: captions,\n                    inbandTextTracks,\n                    timestampOffset\n                });\n            }); // Reset stored captions since we added parsed\n            // captions to a text track at this point\n\n            if (this.transmuxer_) {\n                this.transmuxer_.postMessage({\n                    action: 'clearParsedMp4Captions'\n                });\n            }\n        }\n        handleId3_(simpleSegment, id3Frames, dispatchType) {\n            this.earlyAbortWhenNeeded_(simpleSegment.stats);\n            if (this.checkForAbort_(simpleSegment.requestId)) {\n                return;\n            }\n            const segmentInfo = this.pendingSegment_; // we need to have appended data in order for the timestamp offset to be set\n\n            if (!segmentInfo.hasAppendedData_) {\n                this.metadataQueue_.id3.push(this.handleId3_.bind(this, simpleSegment, id3Frames, dispatchType));\n                return;\n            }\n            this.addMetadataToTextTrack(dispatchType, id3Frames, this.duration_());\n        }\n        processMetadataQueue_() {\n            this.metadataQueue_.id3.forEach(fn => fn());\n            this.metadataQueue_.caption.forEach(fn => fn());\n            this.metadataQueue_.id3 = [];\n            this.metadataQueue_.caption = [];\n        }\n        processCallQueue_() {\n            const callQueue = this.callQueue_; // Clear out the queue before the queued functions are run, since some of the\n            // functions may check the length of the load queue and default to pushing themselves\n            // back onto the queue.\n\n            this.callQueue_ = [];\n            callQueue.forEach(fun => fun());\n        }\n        processLoadQueue_() {\n            const loadQueue = this.loadQueue_; // Clear out the queue before the queued functions are run, since some of the\n            // functions may check the length of the load queue and default to pushing themselves\n            // back onto the queue.\n\n            this.loadQueue_ = [];\n            loadQueue.forEach(fun => fun());\n        }\n        /**\n         * Determines whether the loader has enough info to load the next segment.\n         *\n         * @return {boolean}\n         *         Whether or not the loader has enough info to load the next segment\n         */\n\n        hasEnoughInfoToLoad_() {\n            // Since primary timing goes by video, only the audio loader potentially needs to wait\n            // to load.\n            if (this.loaderType_ !== 'audio') {\n                return true;\n            }\n            const segmentInfo = this.pendingSegment_; // A fill buffer must have already run to establish a pending segment before there's\n            // enough info to load.\n\n            if (!segmentInfo) {\n                return false;\n            } // The first segment can and should be loaded immediately so that source buffers are\n            // created together (before appending). Source buffer creation uses the presence of\n            // audio and video data to determine whether to create audio/video source buffers, and\n            // uses processed (transmuxed or parsed) media to determine the types required.\n\n            if (!this.getCurrentMediaInfo_()) {\n                return true;\n            }\n            if (\n                // Technically, instead of waiting to load a segment on timeline changes, a segment\n                // can be requested and downloaded and only wait before it is transmuxed or parsed.\n                // But in practice, there are a few reasons why it is better to wait until a loader\n                // is ready to append that segment before requesting and downloading:\n                //\n                // 1. Because audio and main loaders cross discontinuities together, if this loader\n                //    is waiting for the other to catch up, then instead of requesting another\n                //    segment and using up more bandwidth, by not yet loading, more bandwidth is\n                //    allotted to the loader currently behind.\n                // 2. media-segment-request doesn't have to have logic to consider whether a segment\n                // is ready to be processed or not, isolating the queueing behavior to the loader.\n                // 3. The audio loader bases some of its segment properties on timing information\n                //    provided by the main loader, meaning that, if the logic for waiting on\n                //    processing was in media-segment-request, then it would also need to know how\n                //    to re-generate the segment information after the main loader caught up.\n                shouldWaitForTimelineChange({\n                    timelineChangeController: this.timelineChangeController_,\n                    currentTimeline: this.currentTimeline_,\n                    segmentTimeline: segmentInfo.timeline,\n                    loaderType: this.loaderType_,\n                    audioDisabled: this.audioDisabled_\n                })) {\n                return false;\n            }\n            return true;\n        }\n        getCurrentMediaInfo_(segmentInfo = this.pendingSegment_) {\n            return segmentInfo && segmentInfo.trackInfo || this.currentMediaInfo_;\n        }\n        getMediaInfo_(segmentInfo = this.pendingSegment_) {\n            return this.getCurrentMediaInfo_(segmentInfo) || this.startingMediaInfo_;\n        }\n        getPendingSegmentPlaylist() {\n            return this.pendingSegment_ ? this.pendingSegment_.playlist : null;\n        }\n        hasEnoughInfoToAppend_() {\n            if (!this.sourceUpdater_.ready()) {\n                return false;\n            } // If content needs to be removed or the loader is waiting on an append reattempt,\n            // then no additional content should be appended until the prior append is resolved.\n\n            if (this.waitingOnRemove_ || this.quotaExceededErrorRetryTimeout_) {\n                return false;\n            }\n            const segmentInfo = this.pendingSegment_;\n            const trackInfo = this.getCurrentMediaInfo_(); // no segment to append any data for or\n            // we do not have information on this specific\n            // segment yet\n\n            if (!segmentInfo || !trackInfo) {\n                return false;\n            }\n            const {\n                hasAudio,\n                hasVideo,\n                isMuxed\n            } = trackInfo;\n            if (hasVideo && !segmentInfo.videoTimingInfo) {\n                return false;\n            } // muxed content only relies on video timing information for now.\n\n            if (hasAudio && !this.audioDisabled_ && !isMuxed && !segmentInfo.audioTimingInfo) {\n                return false;\n            }\n            if (shouldWaitForTimelineChange({\n                timelineChangeController: this.timelineChangeController_,\n                currentTimeline: this.currentTimeline_,\n                segmentTimeline: segmentInfo.timeline,\n                loaderType: this.loaderType_,\n                audioDisabled: this.audioDisabled_\n            })) {\n                return false;\n            }\n            return true;\n        }\n        handleData_(simpleSegment, result) {\n            this.earlyAbortWhenNeeded_(simpleSegment.stats);\n            if (this.checkForAbort_(simpleSegment.requestId)) {\n                return;\n            } // If there's anything in the call queue, then this data came later and should be\n            // executed after the calls currently queued.\n\n            if (this.callQueue_.length || !this.hasEnoughInfoToAppend_()) {\n                this.callQueue_.push(this.handleData_.bind(this, simpleSegment, result));\n                return;\n            }\n            const segmentInfo = this.pendingSegment_; // update the time mapping so we can translate from display time to media time\n\n            this.setTimeMapping_(segmentInfo.timeline); // for tracking overall stats\n\n            this.updateMediaSecondsLoaded_(segmentInfo.part || segmentInfo.segment); // Note that the state isn't changed from loading to appending. This is because abort\n            // logic may change behavior depending on the state, and changing state too early may\n            // inflate our estimates of bandwidth. In the future this should be re-examined to\n            // note more granular states.\n            // don't process and append data if the mediaSource is closed\n\n            if (this.mediaSource_.readyState === 'closed') {\n                return;\n            } // if this request included an initialization segment, save that data\n            // to the initSegment cache\n\n            if (simpleSegment.map) {\n                simpleSegment.map = this.initSegmentForMap(simpleSegment.map, true); // move over init segment properties to media request\n\n                segmentInfo.segment.map = simpleSegment.map;\n            } // if this request included a segment key, save that data in the cache\n\n            if (simpleSegment.key) {\n                this.segmentKey(simpleSegment.key, true);\n            }\n            segmentInfo.isFmp4 = simpleSegment.isFmp4;\n            segmentInfo.timingInfo = segmentInfo.timingInfo || {};\n            if (segmentInfo.isFmp4) {\n                this.trigger('fmp4');\n                segmentInfo.timingInfo.start = segmentInfo[timingInfoPropertyForMedia(result.type)].start;\n            } else {\n                const trackInfo = this.getCurrentMediaInfo_();\n                const useVideoTimingInfo = this.loaderType_ === 'main' && trackInfo && trackInfo.hasVideo;\n                let firstVideoFrameTimeForData;\n                if (useVideoTimingInfo) {\n                    firstVideoFrameTimeForData = segmentInfo.videoTimingInfo.start;\n                } // Segment loader knows more about segment timing than the transmuxer (in certain\n                // aspects), so make any changes required for a more accurate start time.\n                // Don't set the end time yet, as the segment may not be finished processing.\n\n                segmentInfo.timingInfo.start = this.trueSegmentStart_({\n                    currentStart: segmentInfo.timingInfo.start,\n                    playlist: segmentInfo.playlist,\n                    mediaIndex: segmentInfo.mediaIndex,\n                    currentVideoTimestampOffset: this.sourceUpdater_.videoTimestampOffset(),\n                    useVideoTimingInfo,\n                    firstVideoFrameTimeForData,\n                    videoTimingInfo: segmentInfo.videoTimingInfo,\n                    audioTimingInfo: segmentInfo.audioTimingInfo\n                });\n            } // Init segments for audio and video only need to be appended in certain cases. Now\n            // that data is about to be appended, we can check the final cases to determine\n            // whether we should append an init segment.\n\n            this.updateAppendInitSegmentStatus(segmentInfo, result.type); // Timestamp offset should be updated once we get new data and have its timing info,\n            // as we use the start of the segment to offset the best guess (playlist provided)\n            // timestamp offset.\n\n            this.updateSourceBufferTimestampOffset_(segmentInfo); // if this is a sync request we need to determine whether it should\n            // be appended or not.\n\n            if (segmentInfo.isSyncRequest) {\n                // first save/update our timing info for this segment.\n                // this is what allows us to choose an accurate segment\n                // and the main reason we make a sync request.\n                this.updateTimingInfoEnd_(segmentInfo);\n                this.syncController_.saveSegmentTimingInfo({\n                    segmentInfo,\n                    shouldSaveTimelineMapping: this.loaderType_ === 'main'\n                });\n                const next = this.chooseNextRequest_(); // If the sync request isn't the segment that would be requested next\n                // after taking into account its timing info, do not append it.\n\n                if (next.mediaIndex !== segmentInfo.mediaIndex || next.partIndex !== segmentInfo.partIndex) {\n                    this.logger_('sync segment was incorrect, not appending');\n                    return;\n                } // otherwise append it like any other segment as our guess was correct.\n\n                this.logger_('sync segment was correct, appending');\n            } // Save some state so that in the future anything waiting on first append (and/or\n            // timestamp offset(s)) can process immediately. While the extra state isn't optimal,\n            // we need some notion of whether the timestamp offset or other relevant information\n            // has had a chance to be set.\n\n            segmentInfo.hasAppendedData_ = true; // Now that the timestamp offset should be set, we can append any waiting ID3 tags.\n\n            this.processMetadataQueue_();\n            this.appendData_(segmentInfo, result);\n        }\n        updateAppendInitSegmentStatus(segmentInfo, type) {\n            // alt audio doesn't manage timestamp offset\n            if (this.loaderType_ === 'main' && typeof segmentInfo.timestampOffset === 'number' &&\n                // in the case that we're handling partial data, we don't want to append an init\n                // segment for each chunk\n                !segmentInfo.changedTimestampOffset) {\n                // if the timestamp offset changed, the timeline may have changed, so we have to re-\n                // append init segments\n                this.appendInitSegment_ = {\n                    audio: true,\n                    video: true\n                };\n            }\n            if (this.playlistOfLastInitSegment_[type] !== segmentInfo.playlist) {\n                // make sure we append init segment on playlist changes, in case the media config\n                // changed\n                this.appendInitSegment_[type] = true;\n            }\n        }\n        getInitSegmentAndUpdateState_({\n                                          type,\n                                          initSegment,\n                                          map,\n                                          playlist\n                                      }) {\n            // \"The EXT-X-MAP tag specifies how to obtain the Media Initialization Section\n            // (Section 3) required to parse the applicable Media Segments.  It applies to every\n            // Media Segment that appears after it in the Playlist until the next EXT-X-MAP tag\n            // or until the end of the playlist.\"\n            // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.2.5\n            if (map) {\n                const id = initSegmentId(map);\n                if (this.activeInitSegmentId_ === id) {\n                    // don't need to re-append the init segment if the ID matches\n                    return null;\n                } // a map-specified init segment takes priority over any transmuxed (or otherwise\n                // obtained) init segment\n                //\n                // this also caches the init segment for later use\n\n                initSegment = this.initSegmentForMap(map, true).bytes;\n                this.activeInitSegmentId_ = id;\n            } // We used to always prepend init segments for video, however, that shouldn't be\n            // necessary. Instead, we should only append on changes, similar to what we've always\n            // done for audio. This is more important (though may not be that important) for\n            // frame-by-frame appending for LHLS, simply because of the increased quantity of\n            // appends.\n\n            if (initSegment && this.appendInitSegment_[type]) {\n                // Make sure we track the playlist that we last used for the init segment, so that\n                // we can re-append the init segment in the event that we get data from a new\n                // playlist. Discontinuities and track changes are handled in other sections.\n                this.playlistOfLastInitSegment_[type] = playlist; // Disable future init segment appends for this type. Until a change is necessary.\n\n                this.appendInitSegment_[type] = false; // we need to clear out the fmp4 active init segment id, since\n                // we are appending the muxer init segment\n\n                this.activeInitSegmentId_ = null;\n                return initSegment;\n            }\n            return null;\n        }\n        handleQuotaExceededError_({\n                                      segmentInfo,\n                                      type,\n                                      bytes\n                                  }, error) {\n            const audioBuffered = this.sourceUpdater_.audioBuffered();\n            const videoBuffered = this.sourceUpdater_.videoBuffered(); // For now we're ignoring any notion of gaps in the buffer, but they, in theory,\n            // should be cleared out during the buffer removals. However, log in case it helps\n            // debug.\n\n            if (audioBuffered.length > 1) {\n                this.logger_('On QUOTA_EXCEEDED_ERR, found gaps in the audio buffer: ' + timeRangesToArray(audioBuffered).join(', '));\n            }\n            if (videoBuffered.length > 1) {\n                this.logger_('On QUOTA_EXCEEDED_ERR, found gaps in the video buffer: ' + timeRangesToArray(videoBuffered).join(', '));\n            }\n            const audioBufferStart = audioBuffered.length ? audioBuffered.start(0) : 0;\n            const audioBufferEnd = audioBuffered.length ? audioBuffered.end(audioBuffered.length - 1) : 0;\n            const videoBufferStart = videoBuffered.length ? videoBuffered.start(0) : 0;\n            const videoBufferEnd = videoBuffered.length ? videoBuffered.end(videoBuffered.length - 1) : 0;\n            if (audioBufferEnd - audioBufferStart <= MIN_BACK_BUFFER && videoBufferEnd - videoBufferStart <= MIN_BACK_BUFFER) {\n                // Can't remove enough buffer to make room for new segment (or the browser doesn't\n                // allow for appends of segments this size). In the future, it may be possible to\n                // split up the segment and append in pieces, but for now, error out this playlist\n                // in an attempt to switch to a more manageable rendition.\n                this.logger_('On QUOTA_EXCEEDED_ERR, single segment too large to append to ' + 'buffer, triggering an error. ' + `Appended byte length: ${bytes.byteLength}, ` + `audio buffer: ${timeRangesToArray(audioBuffered).join(', ')}, ` + `video buffer: ${timeRangesToArray(videoBuffered).join(', ')}, `);\n                this.error({\n                    message: 'Quota exceeded error with append of a single segment of content',\n                    excludeUntil: Infinity\n                });\n                this.trigger('error');\n                return;\n            } // To try to resolve the quota exceeded error, clear back buffer and retry. This means\n            // that the segment-loader should block on future events until this one is handled, so\n            // that it doesn't keep moving onto further segments. Adding the call to the call\n            // queue will prevent further appends until waitingOnRemove_ and\n            // quotaExceededErrorRetryTimeout_ are cleared.\n            //\n            // Note that this will only block the current loader. In the case of demuxed content,\n            // the other load may keep filling as fast as possible. In practice, this should be\n            // OK, as it is a rare case when either audio has a high enough bitrate to fill up a\n            // source buffer, or video fills without enough room for audio to append (and without\n            // the availability of clearing out seconds of back buffer to make room for audio).\n            // But it might still be good to handle this case in the future as a TODO.\n\n            this.waitingOnRemove_ = true;\n            this.callQueue_.push(this.appendToSourceBuffer_.bind(this, {\n                segmentInfo,\n                type,\n                bytes\n            }));\n            const currentTime = this.currentTime_(); // Try to remove as much audio and video as possible to make room for new content\n            // before retrying.\n\n            const timeToRemoveUntil = currentTime - MIN_BACK_BUFFER;\n            this.logger_(`On QUOTA_EXCEEDED_ERR, removing audio/video from 0 to ${timeToRemoveUntil}`);\n            this.remove(0, timeToRemoveUntil, () => {\n                this.logger_(`On QUOTA_EXCEEDED_ERR, retrying append in ${MIN_BACK_BUFFER}s`);\n                this.waitingOnRemove_ = false; // wait the length of time alotted in the back buffer to prevent wasted\n                // attempts (since we can't clear less than the minimum)\n\n                this.quotaExceededErrorRetryTimeout_ = window.setTimeout(() => {\n                    this.logger_('On QUOTA_EXCEEDED_ERR, re-processing call queue');\n                    this.quotaExceededErrorRetryTimeout_ = null;\n                    this.processCallQueue_();\n                }, MIN_BACK_BUFFER * 1000);\n            }, true);\n        }\n        handleAppendError_({\n                               segmentInfo,\n                               type,\n                               bytes\n                           }, error) {\n            // if there's no error, nothing to do\n            if (!error) {\n                return;\n            }\n            if (error.code === QUOTA_EXCEEDED_ERR) {\n                this.handleQuotaExceededError_({\n                    segmentInfo,\n                    type,\n                    bytes\n                }); // A quota exceeded error should be recoverable with a future re-append, so no need\n                // to trigger an append error.\n\n                return;\n            }\n            this.logger_('Received non QUOTA_EXCEEDED_ERR on append', error);\n            this.error(`${type} append of ${bytes.length}b failed for segment ` + `#${segmentInfo.mediaIndex} in playlist ${segmentInfo.playlist.id}`); // If an append errors, we often can't recover.\n            // (see https://w3c.github.io/media-source/#sourcebuffer-append-error).\n            //\n            // Trigger a special error so that it can be handled separately from normal,\n            // recoverable errors.\n\n            this.trigger('appenderror');\n        }\n        appendToSourceBuffer_({\n                                  segmentInfo,\n                                  type,\n                                  initSegment,\n                                  data,\n                                  bytes\n                              }) {\n            // If this is a re-append, bytes were already created and don't need to be recreated\n            if (!bytes) {\n                const segments = [data];\n                let byteLength = data.byteLength;\n                if (initSegment) {\n                    // if the media initialization segment is changing, append it before the content\n                    // segment\n                    segments.unshift(initSegment);\n                    byteLength += initSegment.byteLength;\n                } // Technically we should be OK appending the init segment separately, however, we\n                // haven't yet tested that, and prepending is how we have always done things.\n\n                bytes = concatSegments({\n                    bytes: byteLength,\n                    segments\n                });\n            }\n            this.sourceUpdater_.appendBuffer({\n                segmentInfo,\n                type,\n                bytes\n            }, this.handleAppendError_.bind(this, {\n                segmentInfo,\n                type,\n                bytes\n            }));\n        }\n        handleSegmentTimingInfo_(type, requestId, segmentTimingInfo) {\n            if (!this.pendingSegment_ || requestId !== this.pendingSegment_.requestId) {\n                return;\n            }\n            const segment = this.pendingSegment_.segment;\n            const timingInfoProperty = `${type}TimingInfo`;\n            if (!segment[timingInfoProperty]) {\n                segment[timingInfoProperty] = {};\n            }\n            segment[timingInfoProperty].transmuxerPrependedSeconds = segmentTimingInfo.prependedContentDuration || 0;\n            segment[timingInfoProperty].transmuxedPresentationStart = segmentTimingInfo.start.presentation;\n            segment[timingInfoProperty].transmuxedDecodeStart = segmentTimingInfo.start.decode;\n            segment[timingInfoProperty].transmuxedPresentationEnd = segmentTimingInfo.end.presentation;\n            segment[timingInfoProperty].transmuxedDecodeEnd = segmentTimingInfo.end.decode; // mainly used as a reference for debugging\n\n            segment[timingInfoProperty].baseMediaDecodeTime = segmentTimingInfo.baseMediaDecodeTime;\n        }\n        appendData_(segmentInfo, result) {\n            const {\n                type,\n                data\n            } = result;\n            if (!data || !data.byteLength) {\n                return;\n            }\n            if (type === 'audio' && this.audioDisabled_) {\n                return;\n            }\n            const initSegment = this.getInitSegmentAndUpdateState_({\n                type,\n                initSegment: result.initSegment,\n                playlist: segmentInfo.playlist,\n                map: segmentInfo.isFmp4 ? segmentInfo.segment.map : null\n            });\n            this.appendToSourceBuffer_({\n                segmentInfo,\n                type,\n                initSegment,\n                data\n            });\n        }\n        /**\n         * load a specific segment from a request into the buffer\n         *\n         * @private\n         */\n\n        loadSegment_(segmentInfo) {\n            this.state = 'WAITING';\n            this.pendingSegment_ = segmentInfo;\n            this.trimBackBuffer_(segmentInfo);\n            if (typeof segmentInfo.timestampOffset === 'number') {\n                if (this.transmuxer_) {\n                    this.transmuxer_.postMessage({\n                        action: 'clearAllMp4Captions'\n                    });\n                }\n            }\n            if (!this.hasEnoughInfoToLoad_()) {\n                this.loadQueue_.push(() => {\n                    // regenerate the audioAppendStart, timestampOffset, etc as they\n                    // may have changed since this function was added to the queue.\n                    const options = _extends$1({}, segmentInfo, {\n                        forceTimestampOffset: true\n                    });\n                    _extends$1(segmentInfo, this.generateSegmentInfo_(options));\n                    this.isPendingTimestampOffset_ = false;\n                    this.updateTransmuxerAndRequestSegment_(segmentInfo);\n                });\n                return;\n            }\n            this.updateTransmuxerAndRequestSegment_(segmentInfo);\n        }\n        updateTransmuxerAndRequestSegment_(segmentInfo) {\n            // We'll update the source buffer's timestamp offset once we have transmuxed data, but\n            // the transmuxer still needs to be updated before then.\n            //\n            // Even though keepOriginalTimestamps is set to true for the transmuxer, timestamp\n            // offset must be passed to the transmuxer for stream correcting adjustments.\n            if (this.shouldUpdateTransmuxerTimestampOffset_(segmentInfo.timestampOffset)) {\n                this.gopBuffer_.length = 0; // gopsToAlignWith was set before the GOP buffer was cleared\n\n                segmentInfo.gopsToAlignWith = [];\n                this.timeMapping_ = 0; // reset values in the transmuxer since a discontinuity should start fresh\n\n                this.transmuxer_.postMessage({\n                    action: 'reset'\n                });\n                this.transmuxer_.postMessage({\n                    action: 'setTimestampOffset',\n                    timestampOffset: segmentInfo.timestampOffset\n                });\n            }\n            const simpleSegment = this.createSimplifiedSegmentObj_(segmentInfo);\n            const isEndOfStream = this.isEndOfStream_(segmentInfo.mediaIndex, segmentInfo.playlist, segmentInfo.partIndex);\n            const isWalkingForward = this.mediaIndex !== null;\n            const isDiscontinuity = segmentInfo.timeline !== this.currentTimeline_ &&\n                // currentTimeline starts at -1, so we shouldn't end the timeline switching to 0,\n                // the first timeline\n                segmentInfo.timeline > 0;\n            const isEndOfTimeline = isEndOfStream || isWalkingForward && isDiscontinuity;\n            this.logger_(`Requesting ${segmentInfoString(segmentInfo)}`); // If there's an init segment associated with this segment, but it is not cached (identified by a lack of bytes),\n            // then this init segment has never been seen before and should be appended.\n            //\n            // At this point the content type (audio/video or both) is not yet known, but it should be safe to set\n            // both to true and leave the decision of whether to append the init segment to append time.\n\n            if (simpleSegment.map && !simpleSegment.map.bytes) {\n                this.logger_('going to request init segment.');\n                this.appendInitSegment_ = {\n                    video: true,\n                    audio: true\n                };\n            }\n            segmentInfo.abortRequests = mediaSegmentRequest({\n                xhr: this.vhs_.xhr,\n                xhrOptions: this.xhrOptions_,\n                decryptionWorker: this.decrypter_,\n                segment: simpleSegment,\n                abortFn: this.handleAbort_.bind(this, segmentInfo),\n                progressFn: this.handleProgress_.bind(this),\n                trackInfoFn: this.handleTrackInfo_.bind(this),\n                timingInfoFn: this.handleTimingInfo_.bind(this),\n                videoSegmentTimingInfoFn: this.handleSegmentTimingInfo_.bind(this, 'video', segmentInfo.requestId),\n                audioSegmentTimingInfoFn: this.handleSegmentTimingInfo_.bind(this, 'audio', segmentInfo.requestId),\n                captionsFn: this.handleCaptions_.bind(this),\n                isEndOfTimeline,\n                endedTimelineFn: () => {\n                    this.logger_('received endedtimeline callback');\n                },\n                id3Fn: this.handleId3_.bind(this),\n                dataFn: this.handleData_.bind(this),\n                doneFn: this.segmentRequestFinished_.bind(this),\n                onTransmuxerLog: ({\n                                      message,\n                                      level,\n                                      stream\n                                  }) => {\n                    this.logger_(`${segmentInfoString(segmentInfo)} logged from transmuxer stream ${stream} as a ${level}: ${message}`);\n                }\n            });\n        }\n        /**\n         * trim the back buffer so that we don't have too much data\n         * in the source buffer\n         *\n         * @private\n         *\n         * @param {Object} segmentInfo - the current segment\n         */\n\n        trimBackBuffer_(segmentInfo) {\n            const removeToTime = safeBackBufferTrimTime(this.seekable_(), this.currentTime_(), this.playlist_.targetDuration || 10); // Chrome has a hard limit of 150MB of\n            // buffer and a very conservative \"garbage collector\"\n            // We manually clear out the old buffer to ensure\n            // we don't trigger the QuotaExceeded error\n            // on the source buffer during subsequent appends\n\n            if (removeToTime > 0) {\n                this.remove(0, removeToTime);\n            }\n        }\n        /**\n         * created a simplified copy of the segment object with just the\n         * information necessary to perform the XHR and decryption\n         *\n         * @private\n         *\n         * @param {Object} segmentInfo - the current segment\n         * @return {Object} a simplified segment object copy\n         */\n\n        createSimplifiedSegmentObj_(segmentInfo) {\n            const segment = segmentInfo.segment;\n            const part = segmentInfo.part;\n            const simpleSegment = {\n                resolvedUri: part ? part.resolvedUri : segment.resolvedUri,\n                byterange: part ? part.byterange : segment.byterange,\n                requestId: segmentInfo.requestId,\n                transmuxer: segmentInfo.transmuxer,\n                audioAppendStart: segmentInfo.audioAppendStart,\n                gopsToAlignWith: segmentInfo.gopsToAlignWith,\n                part: segmentInfo.part\n            };\n            const previousSegment = segmentInfo.playlist.segments[segmentInfo.mediaIndex - 1];\n            if (previousSegment && previousSegment.timeline === segment.timeline) {\n                // The baseStartTime of a segment is used to handle rollover when probing the TS\n                // segment to retrieve timing information. Since the probe only looks at the media's\n                // times (e.g., PTS and DTS values of the segment), and doesn't consider the\n                // player's time (e.g., player.currentTime()), baseStartTime should reflect the\n                // media time as well. transmuxedDecodeEnd represents the end time of a segment, in\n                // seconds of media time, so should be used here. The previous segment is used since\n                // the end of the previous segment should represent the beginning of the current\n                // segment, so long as they are on the same timeline.\n                if (previousSegment.videoTimingInfo) {\n                    simpleSegment.baseStartTime = previousSegment.videoTimingInfo.transmuxedDecodeEnd;\n                } else if (previousSegment.audioTimingInfo) {\n                    simpleSegment.baseStartTime = previousSegment.audioTimingInfo.transmuxedDecodeEnd;\n                }\n            }\n            if (segment.key) {\n                // if the media sequence is greater than 2^32, the IV will be incorrect\n                // assuming 10s segments, that would be about 1300 years\n                const iv = segment.key.iv || new Uint32Array([0, 0, 0, segmentInfo.mediaIndex + segmentInfo.playlist.mediaSequence]);\n                simpleSegment.key = this.segmentKey(segment.key);\n                simpleSegment.key.iv = iv;\n            }\n            if (segment.map) {\n                simpleSegment.map = this.initSegmentForMap(segment.map);\n            }\n            return simpleSegment;\n        }\n        saveTransferStats_(stats) {\n            // every request counts as a media request even if it has been aborted\n            // or canceled due to a timeout\n            this.mediaRequests += 1;\n            if (stats) {\n                this.mediaBytesTransferred += stats.bytesReceived;\n                this.mediaTransferDuration += stats.roundTripTime;\n            }\n        }\n        saveBandwidthRelatedStats_(duration, stats) {\n            // byteLength will be used for throughput, and should be based on bytes receieved,\n            // which we only know at the end of the request and should reflect total bytes\n            // downloaded rather than just bytes processed from components of the segment\n            this.pendingSegment_.byteLength = stats.bytesReceived;\n            if (duration < MIN_SEGMENT_DURATION_TO_SAVE_STATS) {\n                this.logger_(`Ignoring segment's bandwidth because its duration of ${duration}` + ` is less than the min to record ${MIN_SEGMENT_DURATION_TO_SAVE_STATS}`);\n                return;\n            }\n            this.bandwidth = stats.bandwidth;\n            this.roundTrip = stats.roundTripTime;\n        }\n        handleTimeout_() {\n            // although the VTT segment loader bandwidth isn't really used, it's good to\n            // maintain functinality between segment loaders\n            this.mediaRequestsTimedout += 1;\n            this.bandwidth = 1;\n            this.roundTrip = NaN;\n            this.trigger('bandwidthupdate');\n            this.trigger('timeout');\n        }\n        /**\n         * Handle the callback from the segmentRequest function and set the\n         * associated SegmentLoader state and errors if necessary\n         *\n         * @private\n         */\n\n        segmentRequestFinished_(error, simpleSegment, result) {\n            // TODO handle special cases, e.g., muxed audio/video but only audio in the segment\n            // check the call queue directly since this function doesn't need to deal with any\n            // data, and can continue even if the source buffers are not set up and we didn't get\n            // any data from the segment\n            if (this.callQueue_.length) {\n                this.callQueue_.push(this.segmentRequestFinished_.bind(this, error, simpleSegment, result));\n                return;\n            }\n            this.saveTransferStats_(simpleSegment.stats); // The request was aborted and the SegmentLoader has already been reset\n\n            if (!this.pendingSegment_) {\n                return;\n            } // the request was aborted and the SegmentLoader has already started\n            // another request. this can happen when the timeout for an aborted\n            // request triggers due to a limitation in the XHR library\n            // do not count this as any sort of request or we risk double-counting\n\n            if (simpleSegment.requestId !== this.pendingSegment_.requestId) {\n                return;\n            } // an error occurred from the active pendingSegment_ so reset everything\n\n            if (error) {\n                this.pendingSegment_ = null;\n                this.state = 'READY'; // aborts are not a true error condition and nothing corrective needs to be done\n\n                if (error.code === REQUEST_ERRORS.ABORTED) {\n                    return;\n                }\n                this.pause(); // the error is really just that at least one of the requests timed-out\n                // set the bandwidth to a very low value and trigger an ABR switch to\n                // take emergency action\n\n                if (error.code === REQUEST_ERRORS.TIMEOUT) {\n                    this.handleTimeout_();\n                    return;\n                } // if control-flow has arrived here, then the error is real\n                // emit an error event to exclude the current playlist\n\n                this.mediaRequestsErrored += 1;\n                this.error(error);\n                this.trigger('error');\n                return;\n            }\n            const segmentInfo = this.pendingSegment_; // the response was a success so set any bandwidth stats the request\n            // generated for ABR purposes\n\n            this.saveBandwidthRelatedStats_(segmentInfo.duration, simpleSegment.stats);\n            segmentInfo.endOfAllRequests = simpleSegment.endOfAllRequests;\n            if (result.gopInfo) {\n                this.gopBuffer_ = updateGopBuffer(this.gopBuffer_, result.gopInfo, this.safeAppend_);\n            } // Although we may have already started appending on progress, we shouldn't switch the\n            // state away from loading until we are officially done loading the segment data.\n\n            this.state = 'APPENDING'; // used for testing\n\n            this.trigger('appending');\n            this.waitForAppendsToComplete_(segmentInfo);\n        }\n        setTimeMapping_(timeline) {\n            const timelineMapping = this.syncController_.mappingForTimeline(timeline);\n            if (timelineMapping !== null) {\n                this.timeMapping_ = timelineMapping;\n            }\n        }\n        updateMediaSecondsLoaded_(segment) {\n            if (typeof segment.start === 'number' && typeof segment.end === 'number') {\n                this.mediaSecondsLoaded += segment.end - segment.start;\n            } else {\n                this.mediaSecondsLoaded += segment.duration;\n            }\n        }\n        shouldUpdateTransmuxerTimestampOffset_(timestampOffset) {\n            if (timestampOffset === null) {\n                return false;\n            } // note that we're potentially using the same timestamp offset for both video and\n            // audio\n\n            if (this.loaderType_ === 'main' && timestampOffset !== this.sourceUpdater_.videoTimestampOffset()) {\n                return true;\n            }\n            if (!this.audioDisabled_ && timestampOffset !== this.sourceUpdater_.audioTimestampOffset()) {\n                return true;\n            }\n            return false;\n        }\n        trueSegmentStart_({\n                              currentStart,\n                              playlist,\n                              mediaIndex,\n                              firstVideoFrameTimeForData,\n                              currentVideoTimestampOffset,\n                              useVideoTimingInfo,\n                              videoTimingInfo,\n                              audioTimingInfo\n                          }) {\n            if (typeof currentStart !== 'undefined') {\n                // if start was set once, keep using it\n                return currentStart;\n            }\n            if (!useVideoTimingInfo) {\n                return audioTimingInfo.start;\n            }\n            const previousSegment = playlist.segments[mediaIndex - 1]; // The start of a segment should be the start of the first full frame contained\n            // within that segment. Since the transmuxer maintains a cache of incomplete data\n            // from and/or the last frame seen, the start time may reflect a frame that starts\n            // in the previous segment. Check for that case and ensure the start time is\n            // accurate for the segment.\n\n            if (mediaIndex === 0 || !previousSegment || typeof previousSegment.start === 'undefined' || previousSegment.end !== firstVideoFrameTimeForData + currentVideoTimestampOffset) {\n                return firstVideoFrameTimeForData;\n            }\n            return videoTimingInfo.start;\n        }\n        waitForAppendsToComplete_(segmentInfo) {\n            const trackInfo = this.getCurrentMediaInfo_(segmentInfo);\n            if (!trackInfo) {\n                this.error({\n                    message: 'No starting media returned, likely due to an unsupported media format.',\n                    playlistExclusionDuration: Infinity\n                });\n                this.trigger('error');\n                return;\n            } // Although transmuxing is done, appends may not yet be finished. Throw a marker\n            // on each queue this loader is responsible for to ensure that the appends are\n            // complete.\n\n            const {\n                hasAudio,\n                hasVideo,\n                isMuxed\n            } = trackInfo;\n            const waitForVideo = this.loaderType_ === 'main' && hasVideo;\n            const waitForAudio = !this.audioDisabled_ && hasAudio && !isMuxed;\n            segmentInfo.waitingOnAppends = 0; // segments with no data\n\n            if (!segmentInfo.hasAppendedData_) {\n                if (!segmentInfo.timingInfo && typeof segmentInfo.timestampOffset === 'number') {\n                    // When there's no audio or video data in the segment, there's no audio or video\n                    // timing information.\n                    //\n                    // If there's no audio or video timing information, then the timestamp offset\n                    // can't be adjusted to the appropriate value for the transmuxer and source\n                    // buffers.\n                    //\n                    // Therefore, the next segment should be used to set the timestamp offset.\n                    this.isPendingTimestampOffset_ = true;\n                } // override settings for metadata only segments\n\n                segmentInfo.timingInfo = {\n                    start: 0\n                };\n                segmentInfo.waitingOnAppends++;\n                if (!this.isPendingTimestampOffset_) {\n                    // update the timestampoffset\n                    this.updateSourceBufferTimestampOffset_(segmentInfo); // make sure the metadata queue is processed even though we have\n                    // no video/audio data.\n\n                    this.processMetadataQueue_();\n                } // append is \"done\" instantly with no data.\n\n                this.checkAppendsDone_(segmentInfo);\n                return;\n            } // Since source updater could call back synchronously, do the increments first.\n\n            if (waitForVideo) {\n                segmentInfo.waitingOnAppends++;\n            }\n            if (waitForAudio) {\n                segmentInfo.waitingOnAppends++;\n            }\n            if (waitForVideo) {\n                this.sourceUpdater_.videoQueueCallback(this.checkAppendsDone_.bind(this, segmentInfo));\n            }\n            if (waitForAudio) {\n                this.sourceUpdater_.audioQueueCallback(this.checkAppendsDone_.bind(this, segmentInfo));\n            }\n        }\n        checkAppendsDone_(segmentInfo) {\n            if (this.checkForAbort_(segmentInfo.requestId)) {\n                return;\n            }\n            segmentInfo.waitingOnAppends--;\n            if (segmentInfo.waitingOnAppends === 0) {\n                this.handleAppendsDone_();\n            }\n        }\n        checkForIllegalMediaSwitch(trackInfo) {\n            const illegalMediaSwitchError = illegalMediaSwitch(this.loaderType_, this.getCurrentMediaInfo_(), trackInfo);\n            if (illegalMediaSwitchError) {\n                this.error({\n                    message: illegalMediaSwitchError,\n                    playlistExclusionDuration: Infinity\n                });\n                this.trigger('error');\n                return true;\n            }\n            return false;\n        }\n        updateSourceBufferTimestampOffset_(segmentInfo) {\n            if (segmentInfo.timestampOffset === null ||\n                // we don't yet have the start for whatever media type (video or audio) has\n                // priority, timing-wise, so we must wait\n                typeof segmentInfo.timingInfo.start !== 'number' ||\n                // already updated the timestamp offset for this segment\n                segmentInfo.changedTimestampOffset ||\n                // the alt audio loader should not be responsible for setting the timestamp offset\n                this.loaderType_ !== 'main') {\n                return;\n            }\n            let didChange = false; // Primary timing goes by video, and audio is trimmed in the transmuxer, meaning that\n            // the timing info here comes from video. In the event that the audio is longer than\n            // the video, this will trim the start of the audio.\n            // This also trims any offset from 0 at the beginning of the media\n\n            segmentInfo.timestampOffset -= this.getSegmentStartTimeForTimestampOffsetCalculation_({\n                videoTimingInfo: segmentInfo.segment.videoTimingInfo,\n                audioTimingInfo: segmentInfo.segment.audioTimingInfo,\n                timingInfo: segmentInfo.timingInfo\n            }); // In the event that there are part segment downloads, each will try to update the\n            // timestamp offset. Retaining this bit of state prevents us from updating in the\n            // future (within the same segment), however, there may be a better way to handle it.\n\n            segmentInfo.changedTimestampOffset = true;\n            if (segmentInfo.timestampOffset !== this.sourceUpdater_.videoTimestampOffset()) {\n                this.sourceUpdater_.videoTimestampOffset(segmentInfo.timestampOffset);\n                didChange = true;\n            }\n            if (segmentInfo.timestampOffset !== this.sourceUpdater_.audioTimestampOffset()) {\n                this.sourceUpdater_.audioTimestampOffset(segmentInfo.timestampOffset);\n                didChange = true;\n            }\n            if (didChange) {\n                this.trigger('timestampoffset');\n            }\n        }\n        getSegmentStartTimeForTimestampOffsetCalculation_({\n                                                              videoTimingInfo,\n                                                              audioTimingInfo,\n                                                              timingInfo\n                                                          }) {\n            if (!this.useDtsForTimestampOffset_) {\n                return timingInfo.start;\n            }\n            if (videoTimingInfo && typeof videoTimingInfo.transmuxedDecodeStart === 'number') {\n                return videoTimingInfo.transmuxedDecodeStart;\n            } // handle audio only\n\n            if (audioTimingInfo && typeof audioTimingInfo.transmuxedDecodeStart === 'number') {\n                return audioTimingInfo.transmuxedDecodeStart;\n            } // handle content not transmuxed (e.g., MP4)\n\n            return timingInfo.start;\n        }\n        updateTimingInfoEnd_(segmentInfo) {\n            segmentInfo.timingInfo = segmentInfo.timingInfo || {};\n            const trackInfo = this.getMediaInfo_();\n            const useVideoTimingInfo = this.loaderType_ === 'main' && trackInfo && trackInfo.hasVideo;\n            const prioritizedTimingInfo = useVideoTimingInfo && segmentInfo.videoTimingInfo ? segmentInfo.videoTimingInfo : segmentInfo.audioTimingInfo;\n            if (!prioritizedTimingInfo) {\n                return;\n            }\n            segmentInfo.timingInfo.end = typeof prioritizedTimingInfo.end === 'number' ?\n                // End time may not exist in a case where we aren't parsing the full segment (one\n                // current example is the case of fmp4), so use the rough duration to calculate an\n                // end time.\n                prioritizedTimingInfo.end : prioritizedTimingInfo.start + segmentInfo.duration;\n        }\n        /**\n         * callback to run when appendBuffer is finished. detects if we are\n         * in a good state to do things with the data we got, or if we need\n         * to wait for more\n         *\n         * @private\n         */\n\n        handleAppendsDone_() {\n            // appendsdone can cause an abort\n            if (this.pendingSegment_) {\n                this.trigger('appendsdone');\n            }\n            if (!this.pendingSegment_) {\n                this.state = 'READY'; // TODO should this move into this.checkForAbort to speed up requests post abort in\n                // all appending cases?\n\n                if (!this.paused()) {\n                    this.monitorBuffer_();\n                }\n                return;\n            }\n            const segmentInfo = this.pendingSegment_; // Now that the end of the segment has been reached, we can set the end time. It's\n            // best to wait until all appends are done so we're sure that the primary media is\n            // finished (and we have its end time).\n\n            this.updateTimingInfoEnd_(segmentInfo);\n            if (this.shouldSaveSegmentTimingInfo_) {\n                // Timeline mappings should only be saved for the main loader. This is for multiple\n                // reasons:\n                //\n                // 1) Only one mapping is saved per timeline, meaning that if both the audio loader\n                //    and the main loader try to save the timeline mapping, whichever comes later\n                //    will overwrite the first. In theory this is OK, as the mappings should be the\n                //    same, however, it breaks for (2)\n                // 2) In the event of a live stream, the initial live point will make for a somewhat\n                //    arbitrary mapping. If audio and video streams are not perfectly in-sync, then\n                //    the mapping will be off for one of the streams, dependent on which one was\n                //    first saved (see (1)).\n                // 3) Primary timing goes by video in VHS, so the mapping should be video.\n                //\n                // Since the audio loader will wait for the main loader to load the first segment,\n                // the main loader will save the first timeline mapping, and ensure that there won't\n                // be a case where audio loads two segments without saving a mapping (thus leading\n                // to missing segment timing info).\n                this.syncController_.saveSegmentTimingInfo({\n                    segmentInfo,\n                    shouldSaveTimelineMapping: this.loaderType_ === 'main'\n                });\n            }\n            const segmentDurationMessage = getTroublesomeSegmentDurationMessage(segmentInfo, this.sourceType_);\n            if (segmentDurationMessage) {\n                if (segmentDurationMessage.severity === 'warn') {\n                    videojs.log.warn(segmentDurationMessage.message);\n                } else {\n                    this.logger_(segmentDurationMessage.message);\n                }\n            }\n            this.recordThroughput_(segmentInfo);\n            this.pendingSegment_ = null;\n            this.state = 'READY';\n            if (segmentInfo.isSyncRequest) {\n                this.trigger('syncinfoupdate'); // if the sync request was not appended\n                // then it was not the correct segment.\n                // throw it away and use the data it gave us\n                // to get the correct one.\n\n                if (!segmentInfo.hasAppendedData_) {\n                    this.logger_(`Throwing away un-appended sync request ${segmentInfoString(segmentInfo)}`);\n                    return;\n                }\n            }\n            this.logger_(`Appended ${segmentInfoString(segmentInfo)}`);\n            this.addSegmentMetadataCue_(segmentInfo);\n            this.fetchAtBuffer_ = true;\n            if (this.currentTimeline_ !== segmentInfo.timeline) {\n                this.timelineChangeController_.lastTimelineChange({\n                    type: this.loaderType_,\n                    from: this.currentTimeline_,\n                    to: segmentInfo.timeline\n                }); // If audio is not disabled, the main segment loader is responsible for updating\n                // the audio timeline as well. If the content is video only, this won't have any\n                // impact.\n\n                if (this.loaderType_ === 'main' && !this.audioDisabled_) {\n                    this.timelineChangeController_.lastTimelineChange({\n                        type: 'audio',\n                        from: this.currentTimeline_,\n                        to: segmentInfo.timeline\n                    });\n                }\n            }\n            this.currentTimeline_ = segmentInfo.timeline; // We must update the syncinfo to recalculate the seekable range before\n            // the following conditional otherwise it may consider this a bad \"guess\"\n            // and attempt to resync when the post-update seekable window and live\n            // point would mean that this was the perfect segment to fetch\n\n            this.trigger('syncinfoupdate');\n            const segment = segmentInfo.segment;\n            const part = segmentInfo.part;\n            const badSegmentGuess = segment.end && this.currentTime_() - segment.end > segmentInfo.playlist.targetDuration * 3;\n            const badPartGuess = part && part.end && this.currentTime_() - part.end > segmentInfo.playlist.partTargetDuration * 3; // If we previously appended a segment/part that ends more than 3 part/targetDurations before\n            // the currentTime_ that means that our conservative guess was too conservative.\n            // In that case, reset the loader state so that we try to use any information gained\n            // from the previous request to create a new, more accurate, sync-point.\n\n            if (badSegmentGuess || badPartGuess) {\n                this.logger_(`bad ${badSegmentGuess ? 'segment' : 'part'} ${segmentInfoString(segmentInfo)}`);\n                this.resetEverything();\n                return;\n            }\n            const isWalkingForward = this.mediaIndex !== null; // Don't do a rendition switch unless we have enough time to get a sync segment\n            // and conservatively guess\n\n            if (isWalkingForward) {\n                this.trigger('bandwidthupdate');\n            }\n            this.trigger('progress');\n            this.mediaIndex = segmentInfo.mediaIndex;\n            this.partIndex = segmentInfo.partIndex; // any time an update finishes and the last segment is in the\n            // buffer, end the stream. this ensures the \"ended\" event will\n            // fire if playback reaches that point.\n\n            if (this.isEndOfStream_(segmentInfo.mediaIndex, segmentInfo.playlist, segmentInfo.partIndex)) {\n                this.endOfStream();\n            } // used for testing\n\n            this.trigger('appended');\n            if (segmentInfo.hasAppendedData_) {\n                this.mediaAppends++;\n            }\n            if (!this.paused()) {\n                this.monitorBuffer_();\n            }\n        }\n        /**\n         * Records the current throughput of the decrypt, transmux, and append\n         * portion of the semgment pipeline. `throughput.rate` is a the cumulative\n         * moving average of the throughput. `throughput.count` is the number of\n         * data points in the average.\n         *\n         * @private\n         * @param {Object} segmentInfo the object returned by loadSegment\n         */\n\n        recordThroughput_(segmentInfo) {\n            if (segmentInfo.duration < MIN_SEGMENT_DURATION_TO_SAVE_STATS) {\n                this.logger_(`Ignoring segment's throughput because its duration of ${segmentInfo.duration}` + ` is less than the min to record ${MIN_SEGMENT_DURATION_TO_SAVE_STATS}`);\n                return;\n            }\n            const rate = this.throughput.rate; // Add one to the time to ensure that we don't accidentally attempt to divide\n            // by zero in the case where the throughput is ridiculously high\n\n            const segmentProcessingTime = Date.now() - segmentInfo.endOfAllRequests + 1; // Multiply by 8000 to convert from bytes/millisecond to bits/second\n\n            const segmentProcessingThroughput = Math.floor(segmentInfo.byteLength / segmentProcessingTime * 8 * 1000); // This is just a cumulative moving average calculation:\n            //   newAvg = oldAvg + (sample - oldAvg) / (sampleCount + 1)\n\n            this.throughput.rate += (segmentProcessingThroughput - rate) / ++this.throughput.count;\n        }\n        /**\n         * Adds a cue to the segment-metadata track with some metadata information about the\n         * segment\n         *\n         * @private\n         * @param {Object} segmentInfo\n         *        the object returned by loadSegment\n         * @method addSegmentMetadataCue_\n         */\n\n        addSegmentMetadataCue_(segmentInfo) {\n            if (!this.segmentMetadataTrack_) {\n                return;\n            }\n            const segment = segmentInfo.segment;\n            const start = segment.start;\n            const end = segment.end; // Do not try adding the cue if the start and end times are invalid.\n\n            if (!finite(start) || !finite(end)) {\n                return;\n            }\n            removeCuesFromTrack(start, end, this.segmentMetadataTrack_);\n            const Cue = window.WebKitDataCue || window.VTTCue;\n            const value = {\n                custom: segment.custom,\n                dateTimeObject: segment.dateTimeObject,\n                dateTimeString: segment.dateTimeString,\n                programDateTime: segment.programDateTime,\n                bandwidth: segmentInfo.playlist.attributes.BANDWIDTH,\n                resolution: segmentInfo.playlist.attributes.RESOLUTION,\n                codecs: segmentInfo.playlist.attributes.CODECS,\n                byteLength: segmentInfo.byteLength,\n                uri: segmentInfo.uri,\n                timeline: segmentInfo.timeline,\n                playlist: segmentInfo.playlist.id,\n                start,\n                end\n            };\n            const data = JSON.stringify(value);\n            const cue = new Cue(start, end, data); // Attach the metadata to the value property of the cue to keep consistency between\n            // the differences of WebKitDataCue in safari and VTTCue in other browsers\n\n            cue.value = value;\n            this.segmentMetadataTrack_.addCue(cue);\n        }\n    }\n    function noop() {}\n    const toTitleCase = function (string) {\n        if (typeof string !== 'string') {\n            return string;\n        }\n        return string.replace(/./, w => w.toUpperCase());\n    };\n\n    /**\n     * @file source-updater.js\n     */\n    const bufferTypes = ['video', 'audio'];\n    const updating = (type, sourceUpdater) => {\n        const sourceBuffer = sourceUpdater[`${type}Buffer`];\n        return sourceBuffer && sourceBuffer.updating || sourceUpdater.queuePending[type];\n    };\n    const nextQueueIndexOfType = (type, queue) => {\n        for (let i = 0; i < queue.length; i++) {\n            const queueEntry = queue[i];\n            if (queueEntry.type === 'mediaSource') {\n                // If the next entry is a media source entry (uses multiple source buffers), block\n                // processing to allow it to go through first.\n                return null;\n            }\n            if (queueEntry.type === type) {\n                return i;\n            }\n        }\n        return null;\n    };\n    const shiftQueue = (type, sourceUpdater) => {\n        if (sourceUpdater.queue.length === 0) {\n            return;\n        }\n        let queueIndex = 0;\n        let queueEntry = sourceUpdater.queue[queueIndex];\n        if (queueEntry.type === 'mediaSource') {\n            if (!sourceUpdater.updating() && sourceUpdater.mediaSource.readyState !== 'closed') {\n                sourceUpdater.queue.shift();\n                queueEntry.action(sourceUpdater);\n                if (queueEntry.doneFn) {\n                    queueEntry.doneFn();\n                } // Only specific source buffer actions must wait for async updateend events. Media\n                // Source actions process synchronously. Therefore, both audio and video source\n                // buffers are now clear to process the next queue entries.\n\n                shiftQueue('audio', sourceUpdater);\n                shiftQueue('video', sourceUpdater);\n            } // Media Source actions require both source buffers, so if the media source action\n            // couldn't process yet (because one or both source buffers are busy), block other\n            // queue actions until both are available and the media source action can process.\n\n            return;\n        }\n        if (type === 'mediaSource') {\n            // If the queue was shifted by a media source action (this happens when pushing a\n            // media source action onto the queue), then it wasn't from an updateend event from an\n            // audio or video source buffer, so there's no change from previous state, and no\n            // processing should be done.\n            return;\n        } // Media source queue entries don't need to consider whether the source updater is\n        // started (i.e., source buffers are created) as they don't need the source buffers, but\n        // source buffer queue entries do.\n\n        if (!sourceUpdater.ready() || sourceUpdater.mediaSource.readyState === 'closed' || updating(type, sourceUpdater)) {\n            return;\n        }\n        if (queueEntry.type !== type) {\n            queueIndex = nextQueueIndexOfType(type, sourceUpdater.queue);\n            if (queueIndex === null) {\n                // Either there's no queue entry that uses this source buffer type in the queue, or\n                // there's a media source queue entry before the next entry of this type, in which\n                // case wait for that action to process first.\n                return;\n            }\n            queueEntry = sourceUpdater.queue[queueIndex];\n        }\n        sourceUpdater.queue.splice(queueIndex, 1); // Keep a record that this source buffer type is in use.\n        //\n        // The queue pending operation must be set before the action is performed in the event\n        // that the action results in a synchronous event that is acted upon. For instance, if\n        // an exception is thrown that can be handled, it's possible that new actions will be\n        // appended to an empty queue and immediately executed, but would not have the correct\n        // pending information if this property was set after the action was performed.\n\n        sourceUpdater.queuePending[type] = queueEntry;\n        queueEntry.action(type, sourceUpdater);\n        if (!queueEntry.doneFn) {\n            // synchronous operation, process next entry\n            sourceUpdater.queuePending[type] = null;\n            shiftQueue(type, sourceUpdater);\n            return;\n        }\n    };\n    const cleanupBuffer = (type, sourceUpdater) => {\n        const buffer = sourceUpdater[`${type}Buffer`];\n        const titleType = toTitleCase(type);\n        if (!buffer) {\n            return;\n        }\n        buffer.removeEventListener('updateend', sourceUpdater[`on${titleType}UpdateEnd_`]);\n        buffer.removeEventListener('error', sourceUpdater[`on${titleType}Error_`]);\n        sourceUpdater.codecs[type] = null;\n        sourceUpdater[`${type}Buffer`] = null;\n    };\n    const inSourceBuffers = (mediaSource, sourceBuffer) => mediaSource && sourceBuffer && Array.prototype.indexOf.call(mediaSource.sourceBuffers, sourceBuffer) !== -1;\n    const actions = {\n        appendBuffer: (bytes, segmentInfo, onError) => (type, sourceUpdater) => {\n            const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null\n            // or the media source does not contain this source buffer.\n\n            if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n                return;\n            }\n            sourceUpdater.logger_(`Appending segment ${segmentInfo.mediaIndex}'s ${bytes.length} bytes to ${type}Buffer`);\n            try {\n                sourceBuffer.appendBuffer(bytes);\n            } catch (e) {\n                sourceUpdater.logger_(`Error with code ${e.code} ` + (e.code === QUOTA_EXCEEDED_ERR ? '(QUOTA_EXCEEDED_ERR) ' : '') + `when appending segment ${segmentInfo.mediaIndex} to ${type}Buffer`);\n                sourceUpdater.queuePending[type] = null;\n                onError(e);\n            }\n        },\n        remove: (start, end) => (type, sourceUpdater) => {\n            const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null\n            // or the media source does not contain this source buffer.\n\n            if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n                return;\n            }\n            sourceUpdater.logger_(`Removing ${start} to ${end} from ${type}Buffer`);\n            try {\n                sourceBuffer.remove(start, end);\n            } catch (e) {\n                sourceUpdater.logger_(`Remove ${start} to ${end} from ${type}Buffer failed`);\n            }\n        },\n        timestampOffset: offset => (type, sourceUpdater) => {\n            const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null\n            // or the media source does not contain this source buffer.\n\n            if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n                return;\n            }\n            sourceUpdater.logger_(`Setting ${type}timestampOffset to ${offset}`);\n            sourceBuffer.timestampOffset = offset;\n        },\n        callback: callback => (type, sourceUpdater) => {\n            callback();\n        },\n        endOfStream: error => sourceUpdater => {\n            if (sourceUpdater.mediaSource.readyState !== 'open') {\n                return;\n            }\n            sourceUpdater.logger_(`Calling mediaSource endOfStream(${error || ''})`);\n            try {\n                sourceUpdater.mediaSource.endOfStream(error);\n            } catch (e) {\n                videojs.log.warn('Failed to call media source endOfStream', e);\n            }\n        },\n        duration: duration => sourceUpdater => {\n            sourceUpdater.logger_(`Setting mediaSource duration to ${duration}`);\n            try {\n                sourceUpdater.mediaSource.duration = duration;\n            } catch (e) {\n                videojs.log.warn('Failed to set media source duration', e);\n            }\n        },\n        abort: () => (type, sourceUpdater) => {\n            if (sourceUpdater.mediaSource.readyState !== 'open') {\n                return;\n            }\n            const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null\n            // or the media source does not contain this source buffer.\n\n            if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n                return;\n            }\n            sourceUpdater.logger_(`calling abort on ${type}Buffer`);\n            try {\n                sourceBuffer.abort();\n            } catch (e) {\n                videojs.log.warn(`Failed to abort on ${type}Buffer`, e);\n            }\n        },\n        addSourceBuffer: (type, codec) => sourceUpdater => {\n            const titleType = toTitleCase(type);\n            const mime = getMimeForCodec(codec);\n            sourceUpdater.logger_(`Adding ${type}Buffer with codec ${codec} to mediaSource`);\n            const sourceBuffer = sourceUpdater.mediaSource.addSourceBuffer(mime);\n            sourceBuffer.addEventListener('updateend', sourceUpdater[`on${titleType}UpdateEnd_`]);\n            sourceBuffer.addEventListener('error', sourceUpdater[`on${titleType}Error_`]);\n            sourceUpdater.codecs[type] = codec;\n            sourceUpdater[`${type}Buffer`] = sourceBuffer;\n        },\n        removeSourceBuffer: type => sourceUpdater => {\n            const sourceBuffer = sourceUpdater[`${type}Buffer`];\n            cleanupBuffer(type, sourceUpdater); // can't do anything if the media source / source buffer is null\n            // or the media source does not contain this source buffer.\n\n            if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n                return;\n            }\n            sourceUpdater.logger_(`Removing ${type}Buffer with codec ${sourceUpdater.codecs[type]} from mediaSource`);\n            try {\n                sourceUpdater.mediaSource.removeSourceBuffer(sourceBuffer);\n            } catch (e) {\n                videojs.log.warn(`Failed to removeSourceBuffer ${type}Buffer`, e);\n            }\n        },\n        changeType: codec => (type, sourceUpdater) => {\n            const sourceBuffer = sourceUpdater[`${type}Buffer`];\n            const mime = getMimeForCodec(codec); // can't do anything if the media source / source buffer is null\n            // or the media source does not contain this source buffer.\n\n            if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {\n                return;\n            } // do not update codec if we don't need to.\n\n            if (sourceUpdater.codecs[type] === codec) {\n                return;\n            }\n            sourceUpdater.logger_(`changing ${type}Buffer codec from ${sourceUpdater.codecs[type]} to ${codec}`); // check if change to the provided type is supported\n\n            try {\n                sourceBuffer.changeType(mime);\n                sourceUpdater.codecs[type] = codec;\n            } catch (e) {\n                videojs.log.warn(`Failed to changeType on ${type}Buffer`, e);\n            }\n        }\n    };\n    const pushQueue = ({\n                           type,\n                           sourceUpdater,\n                           action,\n                           doneFn,\n                           name\n                       }) => {\n        sourceUpdater.queue.push({\n            type,\n            action,\n            doneFn,\n            name\n        });\n        shiftQueue(type, sourceUpdater);\n    };\n    const onUpdateend = (type, sourceUpdater) => e => {\n        // Although there should, in theory, be a pending action for any updateend receieved,\n        // there are some actions that may trigger updateend events without set definitions in\n        // the w3c spec. For instance, setting the duration on the media source may trigger\n        // updateend events on source buffers. This does not appear to be in the spec. As such,\n        // if we encounter an updateend without a corresponding pending action from our queue\n        // for that source buffer type, process the next action.\n        if (sourceUpdater.queuePending[type]) {\n            const doneFn = sourceUpdater.queuePending[type].doneFn;\n            sourceUpdater.queuePending[type] = null;\n            if (doneFn) {\n                // if there's an error, report it\n                doneFn(sourceUpdater[`${type}Error_`]);\n            }\n        }\n        shiftQueue(type, sourceUpdater);\n    };\n    /**\n     * A queue of callbacks to be serialized and applied when a\n     * MediaSource and its associated SourceBuffers are not in the\n     * updating state. It is used by the segment loader to update the\n     * underlying SourceBuffers when new data is loaded, for instance.\n     *\n     * @class SourceUpdater\n     * @param {MediaSource} mediaSource the MediaSource to create the SourceBuffer from\n     * @param {string} mimeType the desired MIME type of the underlying SourceBuffer\n     */\n\n    class SourceUpdater extends videojs.EventTarget {\n        constructor(mediaSource) {\n            super();\n            this.mediaSource = mediaSource;\n            this.sourceopenListener_ = () => shiftQueue('mediaSource', this);\n            this.mediaSource.addEventListener('sourceopen', this.sourceopenListener_);\n            this.logger_ = logger('SourceUpdater'); // initial timestamp offset is 0\n\n            this.audioTimestampOffset_ = 0;\n            this.videoTimestampOffset_ = 0;\n            this.queue = [];\n            this.queuePending = {\n                audio: null,\n                video: null\n            };\n            this.delayedAudioAppendQueue_ = [];\n            this.videoAppendQueued_ = false;\n            this.codecs = {};\n            this.onVideoUpdateEnd_ = onUpdateend('video', this);\n            this.onAudioUpdateEnd_ = onUpdateend('audio', this);\n            this.onVideoError_ = e => {\n                // used for debugging\n                this.videoError_ = e;\n            };\n            this.onAudioError_ = e => {\n                // used for debugging\n                this.audioError_ = e;\n            };\n            this.createdSourceBuffers_ = false;\n            this.initializedEme_ = false;\n            this.triggeredReady_ = false;\n        }\n        initializedEme() {\n            this.initializedEme_ = true;\n            this.triggerReady();\n        }\n        hasCreatedSourceBuffers() {\n            // if false, likely waiting on one of the segment loaders to get enough data to create\n            // source buffers\n            return this.createdSourceBuffers_;\n        }\n        hasInitializedAnyEme() {\n            return this.initializedEme_;\n        }\n        ready() {\n            return this.hasCreatedSourceBuffers() && this.hasInitializedAnyEme();\n        }\n        createSourceBuffers(codecs) {\n            if (this.hasCreatedSourceBuffers()) {\n                // already created them before\n                return;\n            } // the intial addOrChangeSourceBuffers will always be\n            // two add buffers.\n\n            this.addOrChangeSourceBuffers(codecs);\n            this.createdSourceBuffers_ = true;\n            this.trigger('createdsourcebuffers');\n            this.triggerReady();\n        }\n        triggerReady() {\n            // only allow ready to be triggered once, this prevents the case\n            // where:\n            // 1. we trigger createdsourcebuffers\n            // 2. ie 11 synchronously initializates eme\n            // 3. the synchronous initialization causes us to trigger ready\n            // 4. We go back to the ready check in createSourceBuffers and ready is triggered again.\n            if (this.ready() && !this.triggeredReady_) {\n                this.triggeredReady_ = true;\n                this.trigger('ready');\n            }\n        }\n        /**\n         * Add a type of source buffer to the media source.\n         *\n         * @param {string} type\n         *        The type of source buffer to add.\n         *\n         * @param {string} codec\n         *        The codec to add the source buffer with.\n         */\n\n        addSourceBuffer(type, codec) {\n            pushQueue({\n                type: 'mediaSource',\n                sourceUpdater: this,\n                action: actions.addSourceBuffer(type, codec),\n                name: 'addSourceBuffer'\n            });\n        }\n        /**\n         * call abort on a source buffer.\n         *\n         * @param {string} type\n         *        The type of source buffer to call abort on.\n         */\n\n        abort(type) {\n            pushQueue({\n                type,\n                sourceUpdater: this,\n                action: actions.abort(type),\n                name: 'abort'\n            });\n        }\n        /**\n         * Call removeSourceBuffer and remove a specific type\n         * of source buffer on the mediaSource.\n         *\n         * @param {string} type\n         *        The type of source buffer to remove.\n         */\n\n        removeSourceBuffer(type) {\n            if (!this.canRemoveSourceBuffer()) {\n                videojs.log.error('removeSourceBuffer is not supported!');\n                return;\n            }\n            pushQueue({\n                type: 'mediaSource',\n                sourceUpdater: this,\n                action: actions.removeSourceBuffer(type),\n                name: 'removeSourceBuffer'\n            });\n        }\n        /**\n         * Whether or not the removeSourceBuffer function is supported\n         * on the mediaSource.\n         *\n         * @return {boolean}\n         *          if removeSourceBuffer can be called.\n         */\n\n        canRemoveSourceBuffer() {\n            // As of Firefox 83 removeSourceBuffer\n            // throws errors, so we report that it does not support this.\n            return !videojs.browser.IS_FIREFOX && window.MediaSource && window.MediaSource.prototype && typeof window.MediaSource.prototype.removeSourceBuffer === 'function';\n        }\n        /**\n         * Whether or not the changeType function is supported\n         * on our SourceBuffers.\n         *\n         * @return {boolean}\n         *         if changeType can be called.\n         */\n\n        static canChangeType() {\n            return window.SourceBuffer && window.SourceBuffer.prototype && typeof window.SourceBuffer.prototype.changeType === 'function';\n        }\n        /**\n         * Whether or not the changeType function is supported\n         * on our SourceBuffers.\n         *\n         * @return {boolean}\n         *         if changeType can be called.\n         */\n\n        canChangeType() {\n            return this.constructor.canChangeType();\n        }\n        /**\n         * Call the changeType function on a source buffer, given the code and type.\n         *\n         * @param {string} type\n         *        The type of source buffer to call changeType on.\n         *\n         * @param {string} codec\n         *        The codec string to change type with on the source buffer.\n         */\n\n        changeType(type, codec) {\n            if (!this.canChangeType()) {\n                videojs.log.error('changeType is not supported!');\n                return;\n            }\n            pushQueue({\n                type,\n                sourceUpdater: this,\n                action: actions.changeType(codec),\n                name: 'changeType'\n            });\n        }\n        /**\n         * Add source buffers with a codec or, if they are already created,\n         * call changeType on source buffers using changeType.\n         *\n         * @param {Object} codecs\n         *        Codecs to switch to\n         */\n\n        addOrChangeSourceBuffers(codecs) {\n            if (!codecs || typeof codecs !== 'object' || Object.keys(codecs).length === 0) {\n                throw new Error('Cannot addOrChangeSourceBuffers to undefined codecs');\n            }\n            Object.keys(codecs).forEach(type => {\n                const codec = codecs[type];\n                if (!this.hasCreatedSourceBuffers()) {\n                    return this.addSourceBuffer(type, codec);\n                }\n                if (this.canChangeType()) {\n                    this.changeType(type, codec);\n                }\n            });\n        }\n        /**\n         * Queue an update to append an ArrayBuffer.\n         *\n         * @param {MediaObject} object containing audioBytes and/or videoBytes\n         * @param {Function} done the function to call when done\n         * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-appendBuffer-void-ArrayBuffer-data\n         */\n\n        appendBuffer(options, doneFn) {\n            const {\n                segmentInfo,\n                type,\n                bytes\n            } = options;\n            this.processedAppend_ = true;\n            if (type === 'audio' && this.videoBuffer && !this.videoAppendQueued_) {\n                this.delayedAudioAppendQueue_.push([options, doneFn]);\n                this.logger_(`delayed audio append of ${bytes.length} until video append`);\n                return;\n            } // In the case of certain errors, for instance, QUOTA_EXCEEDED_ERR, updateend will\n            // not be fired. This means that the queue will be blocked until the next action\n            // taken by the segment-loader. Provide a mechanism for segment-loader to handle\n            // these errors by calling the doneFn with the specific error.\n\n            const onError = doneFn;\n            pushQueue({\n                type,\n                sourceUpdater: this,\n                action: actions.appendBuffer(bytes, segmentInfo || {\n                    mediaIndex: -1\n                }, onError),\n                doneFn,\n                name: 'appendBuffer'\n            });\n            if (type === 'video') {\n                this.videoAppendQueued_ = true;\n                if (!this.delayedAudioAppendQueue_.length) {\n                    return;\n                }\n                const queue = this.delayedAudioAppendQueue_.slice();\n                this.logger_(`queuing delayed audio ${queue.length} appendBuffers`);\n                this.delayedAudioAppendQueue_.length = 0;\n                queue.forEach(que => {\n                    this.appendBuffer.apply(this, que);\n                });\n            }\n        }\n        /**\n         * Get the audio buffer's buffered timerange.\n         *\n         * @return {TimeRange}\n         *         The audio buffer's buffered time range\n         */\n\n        audioBuffered() {\n            // no media source/source buffer or it isn't in the media sources\n            // source buffer list\n            if (!inSourceBuffers(this.mediaSource, this.audioBuffer)) {\n                return createTimeRanges();\n            }\n            return this.audioBuffer.buffered ? this.audioBuffer.buffered : createTimeRanges();\n        }\n        /**\n         * Get the video buffer's buffered timerange.\n         *\n         * @return {TimeRange}\n         *         The video buffer's buffered time range\n         */\n\n        videoBuffered() {\n            // no media source/source buffer or it isn't in the media sources\n            // source buffer list\n            if (!inSourceBuffers(this.mediaSource, this.videoBuffer)) {\n                return createTimeRanges();\n            }\n            return this.videoBuffer.buffered ? this.videoBuffer.buffered : createTimeRanges();\n        }\n        /**\n         * Get a combined video/audio buffer's buffered timerange.\n         *\n         * @return {TimeRange}\n         *         the combined time range\n         */\n\n        buffered() {\n            const video = inSourceBuffers(this.mediaSource, this.videoBuffer) ? this.videoBuffer : null;\n            const audio = inSourceBuffers(this.mediaSource, this.audioBuffer) ? this.audioBuffer : null;\n            if (audio && !video) {\n                return this.audioBuffered();\n            }\n            if (video && !audio) {\n                return this.videoBuffered();\n            }\n            return bufferIntersection(this.audioBuffered(), this.videoBuffered());\n        }\n        /**\n         * Add a callback to the queue that will set duration on the mediaSource.\n         *\n         * @param {number} duration\n         *        The duration to set\n         *\n         * @param {Function} [doneFn]\n         *        function to run after duration has been set.\n         */\n\n        setDuration(duration, doneFn = noop) {\n            // In order to set the duration on the media source, it's necessary to wait for all\n            // source buffers to no longer be updating. \"If the updating attribute equals true on\n            // any SourceBuffer in sourceBuffers, then throw an InvalidStateError exception and\n            // abort these steps.\" (source: https://www.w3.org/TR/media-source/#attributes).\n            pushQueue({\n                type: 'mediaSource',\n                sourceUpdater: this,\n                action: actions.duration(duration),\n                name: 'duration',\n                doneFn\n            });\n        }\n        /**\n         * Add a mediaSource endOfStream call to the queue\n         *\n         * @param {Error} [error]\n         *        Call endOfStream with an error\n         *\n         * @param {Function} [doneFn]\n         *        A function that should be called when the\n         *        endOfStream call has finished.\n         */\n\n        endOfStream(error = null, doneFn = noop) {\n            if (typeof error !== 'string') {\n                error = undefined;\n            } // In order to set the duration on the media source, it's necessary to wait for all\n            // source buffers to no longer be updating. \"If the updating attribute equals true on\n            // any SourceBuffer in sourceBuffers, then throw an InvalidStateError exception and\n            // abort these steps.\" (source: https://www.w3.org/TR/media-source/#attributes).\n\n            pushQueue({\n                type: 'mediaSource',\n                sourceUpdater: this,\n                action: actions.endOfStream(error),\n                name: 'endOfStream',\n                doneFn\n            });\n        }\n        /**\n         * Queue an update to remove a time range from the buffer.\n         *\n         * @param {number} start where to start the removal\n         * @param {number} end where to end the removal\n         * @param {Function} [done=noop] optional callback to be executed when the remove\n         * operation is complete\n         * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end\n         */\n\n        removeAudio(start, end, done = noop) {\n            if (!this.audioBuffered().length || this.audioBuffered().end(0) === 0) {\n                done();\n                return;\n            }\n            pushQueue({\n                type: 'audio',\n                sourceUpdater: this,\n                action: actions.remove(start, end),\n                doneFn: done,\n                name: 'remove'\n            });\n        }\n        /**\n         * Queue an update to remove a time range from the buffer.\n         *\n         * @param {number} start where to start the removal\n         * @param {number} end where to end the removal\n         * @param {Function} [done=noop] optional callback to be executed when the remove\n         * operation is complete\n         * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end\n         */\n\n        removeVideo(start, end, done = noop) {\n            if (!this.videoBuffered().length || this.videoBuffered().end(0) === 0) {\n                done();\n                return;\n            }\n            pushQueue({\n                type: 'video',\n                sourceUpdater: this,\n                action: actions.remove(start, end),\n                doneFn: done,\n                name: 'remove'\n            });\n        }\n        /**\n         * Whether the underlying sourceBuffer is updating or not\n         *\n         * @return {boolean} the updating status of the SourceBuffer\n         */\n\n        updating() {\n            // the audio/video source buffer is updating\n            if (updating('audio', this) || updating('video', this)) {\n                return true;\n            }\n            return false;\n        }\n        /**\n         * Set/get the timestampoffset on the audio SourceBuffer\n         *\n         * @return {number} the timestamp offset\n         */\n\n        audioTimestampOffset(offset) {\n            if (typeof offset !== 'undefined' && this.audioBuffer &&\n                // no point in updating if it's the same\n                this.audioTimestampOffset_ !== offset) {\n                pushQueue({\n                    type: 'audio',\n                    sourceUpdater: this,\n                    action: actions.timestampOffset(offset),\n                    name: 'timestampOffset'\n                });\n                this.audioTimestampOffset_ = offset;\n            }\n            return this.audioTimestampOffset_;\n        }\n        /**\n         * Set/get the timestampoffset on the video SourceBuffer\n         *\n         * @return {number} the timestamp offset\n         */\n\n        videoTimestampOffset(offset) {\n            if (typeof offset !== 'undefined' && this.videoBuffer &&\n                // no point in updating if it's the same\n                this.videoTimestampOffset !== offset) {\n                pushQueue({\n                    type: 'video',\n                    sourceUpdater: this,\n                    action: actions.timestampOffset(offset),\n                    name: 'timestampOffset'\n                });\n                this.videoTimestampOffset_ = offset;\n            }\n            return this.videoTimestampOffset_;\n        }\n        /**\n         * Add a function to the queue that will be called\n         * when it is its turn to run in the audio queue.\n         *\n         * @param {Function} callback\n         *        The callback to queue.\n         */\n\n        audioQueueCallback(callback) {\n            if (!this.audioBuffer) {\n                return;\n            }\n            pushQueue({\n                type: 'audio',\n                sourceUpdater: this,\n                action: actions.callback(callback),\n                name: 'callback'\n            });\n        }\n        /**\n         * Add a function to the queue that will be called\n         * when it is its turn to run in the video queue.\n         *\n         * @param {Function} callback\n         *        The callback to queue.\n         */\n\n        videoQueueCallback(callback) {\n            if (!this.videoBuffer) {\n                return;\n            }\n            pushQueue({\n                type: 'video',\n                sourceUpdater: this,\n                action: actions.callback(callback),\n                name: 'callback'\n            });\n        }\n        /**\n         * dispose of the source updater and the underlying sourceBuffer\n         */\n\n        dispose() {\n            this.trigger('dispose');\n            bufferTypes.forEach(type => {\n                this.abort(type);\n                if (this.canRemoveSourceBuffer()) {\n                    this.removeSourceBuffer(type);\n                } else {\n                    this[`${type}QueueCallback`](() => cleanupBuffer(type, this));\n                }\n            });\n            this.videoAppendQueued_ = false;\n            this.delayedAudioAppendQueue_.length = 0;\n            if (this.sourceopenListener_) {\n                this.mediaSource.removeEventListener('sourceopen', this.sourceopenListener_);\n            }\n            this.off();\n        }\n    }\n    const uint8ToUtf8 = uintArray => decodeURIComponent(escape(String.fromCharCode.apply(null, uintArray)));\n    const bufferToHexString = buffer => {\n        const uInt8Buffer = new Uint8Array(buffer);\n        return Array.from(uInt8Buffer).map(byte => byte.toString(16).padStart(2, '0')).join('');\n    };\n\n    /**\n     * @file vtt-segment-loader.js\n     */\n    const VTT_LINE_TERMINATORS = new Uint8Array('\\n\\n'.split('').map(char => char.charCodeAt(0)));\n    class NoVttJsError extends Error {\n        constructor() {\n            super('Trying to parse received VTT cues, but there is no WebVTT. Make sure vtt.js is loaded.');\n        }\n    }\n    /**\n     * An object that manages segment loading and appending.\n     *\n     * @class VTTSegmentLoader\n     * @param {Object} options required and optional options\n     * @extends videojs.EventTarget\n     */\n\n    class VTTSegmentLoader extends SegmentLoader {\n        constructor(settings, options = {}) {\n            super(settings, options); // SegmentLoader requires a MediaSource be specified or it will throw an error;\n            // however, VTTSegmentLoader has no need of a media source, so delete the reference\n\n            this.mediaSource_ = null;\n            this.subtitlesTrack_ = null;\n            this.loaderType_ = 'subtitle';\n            this.featuresNativeTextTracks_ = settings.featuresNativeTextTracks;\n            this.loadVttJs = settings.loadVttJs; // The VTT segment will have its own time mappings. Saving VTT segment timing info in\n            // the sync controller leads to improper behavior.\n\n            this.shouldSaveSegmentTimingInfo_ = false;\n        }\n        createTransmuxer_() {\n            // don't need to transmux any subtitles\n            return null;\n        }\n        /**\n         * Indicates which time ranges are buffered\n         *\n         * @return {TimeRange}\n         *         TimeRange object representing the current buffered ranges\n         */\n\n        buffered_() {\n            if (!this.subtitlesTrack_ || !this.subtitlesTrack_.cues || !this.subtitlesTrack_.cues.length) {\n                return createTimeRanges();\n            }\n            const cues = this.subtitlesTrack_.cues;\n            const start = cues[0].startTime;\n            const end = cues[cues.length - 1].startTime;\n            return createTimeRanges([[start, end]]);\n        }\n        /**\n         * Gets and sets init segment for the provided map\n         *\n         * @param {Object} map\n         *        The map object representing the init segment to get or set\n         * @param {boolean=} set\n         *        If true, the init segment for the provided map should be saved\n         * @return {Object}\n         *         map object for desired init segment\n         */\n\n        initSegmentForMap(map, set = false) {\n            if (!map) {\n                return null;\n            }\n            const id = initSegmentId(map);\n            let storedMap = this.initSegments_[id];\n            if (set && !storedMap && map.bytes) {\n                // append WebVTT line terminators to the media initialization segment if it exists\n                // to follow the WebVTT spec (https://w3c.github.io/webvtt/#file-structure) that\n                // requires two or more WebVTT line terminators between the WebVTT header and the\n                // rest of the file\n                const combinedByteLength = VTT_LINE_TERMINATORS.byteLength + map.bytes.byteLength;\n                const combinedSegment = new Uint8Array(combinedByteLength);\n                combinedSegment.set(map.bytes);\n                combinedSegment.set(VTT_LINE_TERMINATORS, map.bytes.byteLength);\n                this.initSegments_[id] = storedMap = {\n                    resolvedUri: map.resolvedUri,\n                    byterange: map.byterange,\n                    bytes: combinedSegment\n                };\n            }\n            return storedMap || map;\n        }\n        /**\n         * Returns true if all configuration required for loading is present, otherwise false.\n         *\n         * @return {boolean} True if the all configuration is ready for loading\n         * @private\n         */\n\n        couldBeginLoading_() {\n            return this.playlist_ && this.subtitlesTrack_ && !this.paused();\n        }\n        /**\n         * Once all the starting parameters have been specified, begin\n         * operation. This method should only be invoked from the INIT\n         * state.\n         *\n         * @private\n         */\n\n        init_() {\n            this.state = 'READY';\n            this.resetEverything();\n            return this.monitorBuffer_();\n        }\n        /**\n         * Set a subtitle track on the segment loader to add subtitles to\n         *\n         * @param {TextTrack=} track\n         *        The text track to add loaded subtitles to\n         * @return {TextTrack}\n         *        Returns the subtitles track\n         */\n\n        track(track) {\n            if (typeof track === 'undefined') {\n                return this.subtitlesTrack_;\n            }\n            this.subtitlesTrack_ = track; // if we were unpaused but waiting for a sourceUpdater, start\n            // buffering now\n\n            if (this.state === 'INIT' && this.couldBeginLoading_()) {\n                this.init_();\n            }\n            return this.subtitlesTrack_;\n        }\n        /**\n         * Remove any data in the source buffer between start and end times\n         *\n         * @param {number} start - the start time of the region to remove from the buffer\n         * @param {number} end - the end time of the region to remove from the buffer\n         */\n\n        remove(start, end) {\n            removeCuesFromTrack(start, end, this.subtitlesTrack_);\n        }\n        /**\n         * fill the buffer with segements unless the sourceBuffers are\n         * currently updating\n         *\n         * Note: this function should only ever be called by monitorBuffer_\n         * and never directly\n         *\n         * @private\n         */\n\n        fillBuffer_() {\n            // see if we need to begin loading immediately\n            const segmentInfo = this.chooseNextRequest_();\n            if (!segmentInfo) {\n                return;\n            }\n            if (this.syncController_.timestampOffsetForTimeline(segmentInfo.timeline) === null) {\n                // We don't have the timestamp offset that we need to sync subtitles.\n                // Rerun on a timestamp offset or user interaction.\n                const checkTimestampOffset = () => {\n                    this.state = 'READY';\n                    if (!this.paused()) {\n                        // if not paused, queue a buffer check as soon as possible\n                        this.monitorBuffer_();\n                    }\n                };\n                this.syncController_.one('timestampoffset', checkTimestampOffset);\n                this.state = 'WAITING_ON_TIMELINE';\n                return;\n            }\n            this.loadSegment_(segmentInfo);\n        } // never set a timestamp offset for vtt segments.\n\n        timestampOffsetForSegment_() {\n            return null;\n        }\n        chooseNextRequest_() {\n            return this.skipEmptySegments_(super.chooseNextRequest_());\n        }\n        /**\n         * Prevents the segment loader from requesting segments we know contain no subtitles\n         * by walking forward until we find the next segment that we don't know whether it is\n         * empty or not.\n         *\n         * @param {Object} segmentInfo\n         *        a segment info object that describes the current segment\n         * @return {Object}\n         *         a segment info object that describes the current segment\n         */\n\n        skipEmptySegments_(segmentInfo) {\n            while (segmentInfo && segmentInfo.segment.empty) {\n                // stop at the last possible segmentInfo\n                if (segmentInfo.mediaIndex + 1 >= segmentInfo.playlist.segments.length) {\n                    segmentInfo = null;\n                    break;\n                }\n                segmentInfo = this.generateSegmentInfo_({\n                    playlist: segmentInfo.playlist,\n                    mediaIndex: segmentInfo.mediaIndex + 1,\n                    startOfSegment: segmentInfo.startOfSegment + segmentInfo.duration,\n                    isSyncRequest: segmentInfo.isSyncRequest\n                });\n            }\n            return segmentInfo;\n        }\n        stopForError(error) {\n            this.error(error);\n            this.state = 'READY';\n            this.pause();\n            this.trigger('error');\n        }\n        /**\n         * append a decrypted segement to the SourceBuffer through a SourceUpdater\n         *\n         * @private\n         */\n\n        segmentRequestFinished_(error, simpleSegment, result) {\n            if (!this.subtitlesTrack_) {\n                this.state = 'READY';\n                return;\n            }\n            this.saveTransferStats_(simpleSegment.stats); // the request was aborted\n\n            if (!this.pendingSegment_) {\n                this.state = 'READY';\n                this.mediaRequestsAborted += 1;\n                return;\n            }\n            if (error) {\n                if (error.code === REQUEST_ERRORS.TIMEOUT) {\n                    this.handleTimeout_();\n                }\n                if (error.code === REQUEST_ERRORS.ABORTED) {\n                    this.mediaRequestsAborted += 1;\n                } else {\n                    this.mediaRequestsErrored += 1;\n                }\n                this.stopForError(error);\n                return;\n            }\n            const segmentInfo = this.pendingSegment_; // although the VTT segment loader bandwidth isn't really used, it's good to\n            // maintain functionality between segment loaders\n\n            this.saveBandwidthRelatedStats_(segmentInfo.duration, simpleSegment.stats); // if this request included a segment key, save that data in the cache\n\n            if (simpleSegment.key) {\n                this.segmentKey(simpleSegment.key, true);\n            }\n            this.state = 'APPENDING'; // used for tests\n\n            this.trigger('appending');\n            const segment = segmentInfo.segment;\n            if (segment.map) {\n                segment.map.bytes = simpleSegment.map.bytes;\n            }\n            segmentInfo.bytes = simpleSegment.bytes; // Make sure that vttjs has loaded, otherwise, load it and wait till it finished loading\n\n            if (typeof window.WebVTT !== 'function' && typeof this.loadVttJs === 'function') {\n                this.state = 'WAITING_ON_VTTJS'; // should be fine to call multiple times\n                // script will be loaded once but multiple listeners will be added to the queue, which is expected.\n\n                this.loadVttJs().then(() => this.segmentRequestFinished_(error, simpleSegment, result), () => this.stopForError({\n                    message: 'Error loading vtt.js'\n                }));\n                return;\n            }\n            segment.requested = true;\n            try {\n                this.parseVTTCues_(segmentInfo);\n            } catch (e) {\n                this.stopForError({\n                    message: e.message\n                });\n                return;\n            }\n            this.updateTimeMapping_(segmentInfo, this.syncController_.timelines[segmentInfo.timeline], this.playlist_);\n            if (segmentInfo.cues.length) {\n                segmentInfo.timingInfo = {\n                    start: segmentInfo.cues[0].startTime,\n                    end: segmentInfo.cues[segmentInfo.cues.length - 1].endTime\n                };\n            } else {\n                segmentInfo.timingInfo = {\n                    start: segmentInfo.startOfSegment,\n                    end: segmentInfo.startOfSegment + segmentInfo.duration\n                };\n            }\n            if (segmentInfo.isSyncRequest) {\n                this.trigger('syncinfoupdate');\n                this.pendingSegment_ = null;\n                this.state = 'READY';\n                return;\n            }\n            segmentInfo.byteLength = segmentInfo.bytes.byteLength;\n            this.mediaSecondsLoaded += segment.duration; // Create VTTCue instances for each cue in the new segment and add them to\n            // the subtitle track\n\n            segmentInfo.cues.forEach(cue => {\n                this.subtitlesTrack_.addCue(this.featuresNativeTextTracks_ ? new window.VTTCue(cue.startTime, cue.endTime, cue.text) : cue);\n            }); // Remove any duplicate cues from the subtitle track. The WebVTT spec allows\n            // cues to have identical time-intervals, but if the text is also identical\n            // we can safely assume it is a duplicate that can be removed (ex. when a cue\n            // \"overlaps\" VTT segments)\n\n            removeDuplicateCuesFromTrack(this.subtitlesTrack_);\n            this.handleAppendsDone_();\n        }\n        handleData_() {// noop as we shouldn't be getting video/audio data captions\n            // that we do not support here.\n        }\n        updateTimingInfoEnd_() {// noop\n        }\n        /**\n         * Uses the WebVTT parser to parse the segment response\n         *\n         * @throws NoVttJsError\n         *\n         * @param {Object} segmentInfo\n         *        a segment info object that describes the current segment\n         * @private\n         */\n\n        parseVTTCues_(segmentInfo) {\n            let decoder;\n            let decodeBytesToString = false;\n            if (typeof window.WebVTT !== 'function') {\n                // caller is responsible for exception handling.\n                throw new NoVttJsError();\n            }\n            if (typeof window.TextDecoder === 'function') {\n                decoder = new window.TextDecoder('utf8');\n            } else {\n                decoder = window.WebVTT.StringDecoder();\n                decodeBytesToString = true;\n            }\n            const parser = new window.WebVTT.Parser(window, window.vttjs, decoder);\n            segmentInfo.cues = [];\n            segmentInfo.timestampmap = {\n                MPEGTS: 0,\n                LOCAL: 0\n            };\n            parser.oncue = segmentInfo.cues.push.bind(segmentInfo.cues);\n            parser.ontimestampmap = map => {\n                segmentInfo.timestampmap = map;\n            };\n            parser.onparsingerror = error => {\n                videojs.log.warn('Error encountered when parsing cues: ' + error.message);\n            };\n            if (segmentInfo.segment.map) {\n                let mapData = segmentInfo.segment.map.bytes;\n                if (decodeBytesToString) {\n                    mapData = uint8ToUtf8(mapData);\n                }\n                parser.parse(mapData);\n            }\n            let segmentData = segmentInfo.bytes;\n            if (decodeBytesToString) {\n                segmentData = uint8ToUtf8(segmentData);\n            }\n            parser.parse(segmentData);\n            parser.flush();\n        }\n        /**\n         * Updates the start and end times of any cues parsed by the WebVTT parser using\n         * the information parsed from the X-TIMESTAMP-MAP header and a TS to media time mapping\n         * from the SyncController\n         *\n         * @param {Object} segmentInfo\n         *        a segment info object that describes the current segment\n         * @param {Object} mappingObj\n         *        object containing a mapping from TS to media time\n         * @param {Object} playlist\n         *        the playlist object containing the segment\n         * @private\n         */\n\n        updateTimeMapping_(segmentInfo, mappingObj, playlist) {\n            const segment = segmentInfo.segment;\n            if (!mappingObj) {\n                // If the sync controller does not have a mapping of TS to Media Time for the\n                // timeline, then we don't have enough information to update the cue\n                // start/end times\n                return;\n            }\n            if (!segmentInfo.cues.length) {\n                // If there are no cues, we also do not have enough information to figure out\n                // segment timing. Mark that the segment contains no cues so we don't re-request\n                // an empty segment.\n                segment.empty = true;\n                return;\n            }\n            const {\n                MPEGTS,\n                LOCAL\n            } = segmentInfo.timestampmap;\n            /**\n             * From the spec:\n             * The MPEGTS media timestamp MUST use a 90KHz timescale,\n             * even when non-WebVTT Media Segments use a different timescale.\n             */\n\n            const mpegTsInSeconds = MPEGTS / clock_1;\n            const diff = mpegTsInSeconds - LOCAL + mappingObj.mapping;\n            segmentInfo.cues.forEach(cue => {\n                const duration = cue.endTime - cue.startTime;\n                const startTime = MPEGTS === 0 ? cue.startTime + diff : this.handleRollover_(cue.startTime + diff, mappingObj.time);\n                cue.startTime = Math.max(startTime, 0);\n                cue.endTime = Math.max(startTime + duration, 0);\n            });\n            if (!playlist.syncInfo) {\n                const firstStart = segmentInfo.cues[0].startTime;\n                const lastStart = segmentInfo.cues[segmentInfo.cues.length - 1].startTime;\n                playlist.syncInfo = {\n                    mediaSequence: playlist.mediaSequence + segmentInfo.mediaIndex,\n                    time: Math.min(firstStart, lastStart - segment.duration)\n                };\n            }\n        }\n        /**\n         * MPEG-TS PES timestamps are limited to 2^33.\n         * Once they reach 2^33, they roll over to 0.\n         * mux.js handles PES timestamp rollover for the following scenarios:\n         * [forward rollover(right)] ->\n         *    PES timestamps monotonically increase, and once they reach 2^33, they roll over to 0\n         * [backward rollover(left)] -->\n         *    we seek back to position before rollover.\n         *\n         * According to the HLS SPEC:\n         * When synchronizing WebVTT with PES timestamps, clients SHOULD account\n         * for cases where the 33-bit PES timestamps have wrapped and the WebVTT\n         * cue times have not.  When the PES timestamp wraps, the WebVTT Segment\n         * SHOULD have a X-TIMESTAMP-MAP header that maps the current WebVTT\n         * time to the new (low valued) PES timestamp.\n         *\n         * So we want to handle rollover here and align VTT Cue start/end time to the player's time.\n         */\n\n        handleRollover_(value, reference) {\n            if (reference === null) {\n                return value;\n            }\n            let valueIn90khz = value * clock_1;\n            const referenceIn90khz = reference * clock_1;\n            let offset;\n            if (referenceIn90khz < valueIn90khz) {\n                // - 2^33\n                offset = -8589934592;\n            } else {\n                // + 2^33\n                offset = 8589934592;\n            } // distance(value - reference) > 2^32\n\n            while (Math.abs(valueIn90khz - referenceIn90khz) > 4294967296) {\n                valueIn90khz += offset;\n            }\n            return valueIn90khz / clock_1;\n        }\n    }\n\n    /**\n     * @file ad-cue-tags.js\n     */\n    /**\n     * Searches for an ad cue that overlaps with the given mediaTime\n     *\n     * @param {Object} track\n     *        the track to find the cue for\n     *\n     * @param {number} mediaTime\n     *        the time to find the cue at\n     *\n     * @return {Object|null}\n     *         the found cue or null\n     */\n\n    const findAdCue = function (track, mediaTime) {\n        const cues = track.cues;\n        for (let i = 0; i < cues.length; i++) {\n            const cue = cues[i];\n            if (mediaTime >= cue.adStartTime && mediaTime <= cue.adEndTime) {\n                return cue;\n            }\n        }\n        return null;\n    };\n    const updateAdCues = function (media, track, offset = 0) {\n        if (!media.segments) {\n            return;\n        }\n        let mediaTime = offset;\n        let cue;\n        for (let i = 0; i < media.segments.length; i++) {\n            const segment = media.segments[i];\n            if (!cue) {\n                // Since the cues will span for at least the segment duration, adding a fudge\n                // factor of half segment duration will prevent duplicate cues from being\n                // created when timing info is not exact (e.g. cue start time initialized\n                // at 10.006677, but next call mediaTime is 10.003332 )\n                cue = findAdCue(track, mediaTime + segment.duration / 2);\n            }\n            if (cue) {\n                if ('cueIn' in segment) {\n                    // Found a CUE-IN so end the cue\n                    cue.endTime = mediaTime;\n                    cue.adEndTime = mediaTime;\n                    mediaTime += segment.duration;\n                    cue = null;\n                    continue;\n                }\n                if (mediaTime < cue.endTime) {\n                    // Already processed this mediaTime for this cue\n                    mediaTime += segment.duration;\n                    continue;\n                } // otherwise extend cue until a CUE-IN is found\n\n                cue.endTime += segment.duration;\n            } else {\n                if ('cueOut' in segment) {\n                    cue = new window.VTTCue(mediaTime, mediaTime + segment.duration, segment.cueOut);\n                    cue.adStartTime = mediaTime; // Assumes tag format to be\n                    // #EXT-X-CUE-OUT:30\n\n                    cue.adEndTime = mediaTime + parseFloat(segment.cueOut);\n                    track.addCue(cue);\n                }\n                if ('cueOutCont' in segment) {\n                    // Entered into the middle of an ad cue\n                    // Assumes tag formate to be\n                    // #EXT-X-CUE-OUT-CONT:10/30\n                    const [adOffset, adTotal] = segment.cueOutCont.split('/').map(parseFloat);\n                    cue = new window.VTTCue(mediaTime, mediaTime + segment.duration, '');\n                    cue.adStartTime = mediaTime - adOffset;\n                    cue.adEndTime = cue.adStartTime + adTotal;\n                    track.addCue(cue);\n                }\n            }\n            mediaTime += segment.duration;\n        }\n    };\n\n    /**\n     * @file sync-controller.js\n     */\n        // synchronize expired playlist segments.\n        // the max media sequence diff is 48 hours of live stream\n        // content with two second segments. Anything larger than that\n        // will likely be invalid.\n\n    const MAX_MEDIA_SEQUENCE_DIFF_FOR_SYNC = 86400;\n    const syncPointStrategies = [\n        // Stategy \"VOD\": Handle the VOD-case where the sync-point is *always*\n        //                the equivalence display-time 0 === segment-index 0\n        {\n            name: 'VOD',\n            run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n                if (duration !== Infinity) {\n                    const syncPoint = {\n                        time: 0,\n                        segmentIndex: 0,\n                        partIndex: null\n                    };\n                    return syncPoint;\n                }\n                return null;\n            }\n        }, {\n            name: 'MediaSequence',\n            /**\n             * run media sequence strategy\n             *\n             * @param {SyncController} syncController\n             * @param {Object} playlist\n             * @param {number} duration\n             * @param {number} currentTimeline\n             * @param {number} currentTime\n             * @param {string} type\n             */\n            run: (syncController, playlist, duration, currentTimeline, currentTime, type) => {\n                if (!type) {\n                    return null;\n                }\n                const mediaSequenceMap = syncController.getMediaSequenceMap(type);\n                if (!mediaSequenceMap || mediaSequenceMap.size === 0) {\n                    return null;\n                }\n                if (playlist.mediaSequence === undefined || !Array.isArray(playlist.segments) || !playlist.segments.length) {\n                    return null;\n                }\n                let currentMediaSequence = playlist.mediaSequence;\n                let segmentIndex = 0;\n                for (const segment of playlist.segments) {\n                    const range = mediaSequenceMap.get(currentMediaSequence);\n                    if (!range) {\n                        // unexpected case\n                        // we expect this playlist to be the same playlist in the map\n                        // just break from the loop and move forward to the next strategy\n                        break;\n                    }\n                    if (currentTime >= range.start && currentTime < range.end) {\n                        // we found segment\n                        if (Array.isArray(segment.parts) && segment.parts.length) {\n                            let currentPartStart = range.start;\n                            let partIndex = 0;\n                            for (const part of segment.parts) {\n                                const start = currentPartStart;\n                                const end = start + part.duration;\n                                if (currentTime >= start && currentTime < end) {\n                                    return {\n                                        time: range.start,\n                                        segmentIndex,\n                                        partIndex\n                                    };\n                                }\n                                partIndex++;\n                                currentPartStart = end;\n                            }\n                        } // no parts found, return sync point for segment\n\n                        return {\n                            time: range.start,\n                            segmentIndex,\n                            partIndex: null\n                        };\n                    }\n                    segmentIndex++;\n                    currentMediaSequence++;\n                } // we didn't find any segments for provided current time\n\n                return null;\n            }\n        },\n        // Stategy \"ProgramDateTime\": We have a program-date-time tag in this playlist\n        {\n            name: 'ProgramDateTime',\n            run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n                if (!Object.keys(syncController.timelineToDatetimeMappings).length) {\n                    return null;\n                }\n                let syncPoint = null;\n                let lastDistance = null;\n                const partsAndSegments = getPartsAndSegments(playlist);\n                currentTime = currentTime || 0;\n                for (let i = 0; i < partsAndSegments.length; i++) {\n                    // start from the end and loop backwards for live\n                    // or start from the front and loop forwards for non-live\n                    const index = playlist.endList || currentTime === 0 ? i : partsAndSegments.length - (i + 1);\n                    const partAndSegment = partsAndSegments[index];\n                    const segment = partAndSegment.segment;\n                    const datetimeMapping = syncController.timelineToDatetimeMappings[segment.timeline];\n                    if (!datetimeMapping || !segment.dateTimeObject) {\n                        continue;\n                    }\n                    const segmentTime = segment.dateTimeObject.getTime() / 1000;\n                    let start = segmentTime + datetimeMapping; // take part duration into account.\n\n                    if (segment.parts && typeof partAndSegment.partIndex === 'number') {\n                        for (let z = 0; z < partAndSegment.partIndex; z++) {\n                            start += segment.parts[z].duration;\n                        }\n                    }\n                    const distance = Math.abs(currentTime - start); // Once the distance begins to increase, or if distance is 0, we have passed\n                    // currentTime and can stop looking for better candidates\n\n                    if (lastDistance !== null && (distance === 0 || lastDistance < distance)) {\n                        break;\n                    }\n                    lastDistance = distance;\n                    syncPoint = {\n                        time: start,\n                        segmentIndex: partAndSegment.segmentIndex,\n                        partIndex: partAndSegment.partIndex\n                    };\n                }\n                return syncPoint;\n            }\n        },\n        // Stategy \"Segment\": We have a known time mapping for a timeline and a\n        //                    segment in the current timeline with timing data\n        {\n            name: 'Segment',\n            run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n                let syncPoint = null;\n                let lastDistance = null;\n                currentTime = currentTime || 0;\n                const partsAndSegments = getPartsAndSegments(playlist);\n                for (let i = 0; i < partsAndSegments.length; i++) {\n                    // start from the end and loop backwards for live\n                    // or start from the front and loop forwards for non-live\n                    const index = playlist.endList || currentTime === 0 ? i : partsAndSegments.length - (i + 1);\n                    const partAndSegment = partsAndSegments[index];\n                    const segment = partAndSegment.segment;\n                    const start = partAndSegment.part && partAndSegment.part.start || segment && segment.start;\n                    if (segment.timeline === currentTimeline && typeof start !== 'undefined') {\n                        const distance = Math.abs(currentTime - start); // Once the distance begins to increase, we have passed\n                        // currentTime and can stop looking for better candidates\n\n                        if (lastDistance !== null && lastDistance < distance) {\n                            break;\n                        }\n                        if (!syncPoint || lastDistance === null || lastDistance >= distance) {\n                            lastDistance = distance;\n                            syncPoint = {\n                                time: start,\n                                segmentIndex: partAndSegment.segmentIndex,\n                                partIndex: partAndSegment.partIndex\n                            };\n                        }\n                    }\n                }\n                return syncPoint;\n            }\n        },\n        // Stategy \"Discontinuity\": We have a discontinuity with a known\n        //                          display-time\n        {\n            name: 'Discontinuity',\n            run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n                let syncPoint = null;\n                currentTime = currentTime || 0;\n                if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) {\n                    let lastDistance = null;\n                    for (let i = 0; i < playlist.discontinuityStarts.length; i++) {\n                        const segmentIndex = playlist.discontinuityStarts[i];\n                        const discontinuity = playlist.discontinuitySequence + i + 1;\n                        const discontinuitySync = syncController.discontinuities[discontinuity];\n                        if (discontinuitySync) {\n                            const distance = Math.abs(currentTime - discontinuitySync.time); // Once the distance begins to increase, we have passed\n                            // currentTime and can stop looking for better candidates\n\n                            if (lastDistance !== null && lastDistance < distance) {\n                                break;\n                            }\n                            if (!syncPoint || lastDistance === null || lastDistance >= distance) {\n                                lastDistance = distance;\n                                syncPoint = {\n                                    time: discontinuitySync.time,\n                                    segmentIndex,\n                                    partIndex: null\n                                };\n                            }\n                        }\n                    }\n                }\n                return syncPoint;\n            }\n        },\n        // Stategy \"Playlist\": We have a playlist with a known mapping of\n        //                     segment index to display time\n        {\n            name: 'Playlist',\n            run: (syncController, playlist, duration, currentTimeline, currentTime) => {\n                if (playlist.syncInfo) {\n                    const syncPoint = {\n                        time: playlist.syncInfo.time,\n                        segmentIndex: playlist.syncInfo.mediaSequence - playlist.mediaSequence,\n                        partIndex: null\n                    };\n                    return syncPoint;\n                }\n                return null;\n            }\n        }];\n    class SyncController extends videojs.EventTarget {\n        constructor(options = {}) {\n            super(); // ...for synching across variants\n\n            this.timelines = [];\n            this.discontinuities = [];\n            this.timelineToDatetimeMappings = {};\n            /**\n             * @type {Map<string, Map<number, { start: number, end: number }>>}\n             * @private\n             */\n\n            this.mediaSequenceStorage_ = new Map();\n            this.logger_ = logger('SyncController');\n        }\n        /**\n         * Get media sequence map by type\n         *\n         * @param {string} type - segment loader type\n         * @return {Map<number, { start: number, end: number }> | undefined}\n         */\n\n        getMediaSequenceMap(type) {\n            return this.mediaSequenceStorage_.get(type);\n        }\n        /**\n         * Update Media Sequence Map -> <MediaSequence, Range>\n         *\n         * @param {Object} playlist - parsed playlist\n         * @param {number} currentTime - current player's time\n         * @param {string} type - segment loader type\n         * @return {void}\n         */\n\n        updateMediaSequenceMap(playlist, currentTime, type) {\n            // we should not process this playlist if it does not have mediaSequence or segments\n            if (playlist.mediaSequence === undefined || !Array.isArray(playlist.segments) || !playlist.segments.length) {\n                return;\n            }\n            const currentMap = this.getMediaSequenceMap(type);\n            const result = new Map();\n            let currentMediaSequence = playlist.mediaSequence;\n            let currentBaseTime;\n            if (!currentMap) {\n                // first playlist setup:\n                currentBaseTime = 0;\n            } else if (currentMap.has(playlist.mediaSequence)) {\n                // further playlists setup:\n                currentBaseTime = currentMap.get(playlist.mediaSequence).start;\n            } else {\n                // it seems like we have a gap between playlists, use current time as a fallback:\n                this.logger_(`MediaSequence sync for ${type} segment loader - received a gap between playlists.\nFallback base time to: ${currentTime}.\nReceived media sequence: ${currentMediaSequence}.\nCurrent map: `, currentMap);\n                currentBaseTime = currentTime;\n            }\n            this.logger_(`MediaSequence sync for ${type} segment loader.\nReceived media sequence: ${currentMediaSequence}.\nbase time is ${currentBaseTime}\nCurrent map: `, currentMap);\n            playlist.segments.forEach(segment => {\n                const start = currentBaseTime;\n                const end = start + segment.duration;\n                const range = {\n                    start,\n                    end\n                };\n                result.set(currentMediaSequence, range);\n                currentMediaSequence++;\n                currentBaseTime = end;\n            });\n            this.mediaSequenceStorage_.set(type, result);\n        }\n        /**\n         * Find a sync-point for the playlist specified\n         *\n         * A sync-point is defined as a known mapping from display-time to\n         * a segment-index in the current playlist.\n         *\n         * @param {Playlist} playlist\n         *        The playlist that needs a sync-point\n         * @param {number} duration\n         *        Duration of the MediaSource (Infinite if playing a live source)\n         * @param {number} currentTimeline\n         *        The last timeline from which a segment was loaded\n         * @param {number} currentTime\n         *        Current player's time\n         * @param {string} type\n         *        Segment loader type\n         * @return {Object}\n         *          A sync-point object\n         */\n\n        getSyncPoint(playlist, duration, currentTimeline, currentTime, type) {\n            // Always use VOD sync point for VOD\n            if (duration !== Infinity) {\n                const vodSyncPointStrategy = syncPointStrategies.find(({\n                                                                           name\n                                                                       }) => name === 'VOD');\n                return vodSyncPointStrategy.run(this, playlist, duration);\n            }\n            const syncPoints = this.runStrategies_(playlist, duration, currentTimeline, currentTime, type);\n            if (!syncPoints.length) {\n                // Signal that we need to attempt to get a sync-point manually\n                // by fetching a segment in the playlist and constructing\n                // a sync-point from that information\n                return null;\n            } // If we have exact match just return it instead of finding the nearest distance\n\n            for (const syncPointInfo of syncPoints) {\n                const {\n                    syncPoint,\n                    strategy\n                } = syncPointInfo;\n                const {\n                    segmentIndex,\n                    time\n                } = syncPoint;\n                if (segmentIndex < 0) {\n                    continue;\n                }\n                const selectedSegment = playlist.segments[segmentIndex];\n                const start = time;\n                const end = start + selectedSegment.duration;\n                this.logger_(`Strategy: ${strategy}. Current time: ${currentTime}. selected segment: ${segmentIndex}. Time: [${start} -> ${end}]}`);\n                if (currentTime >= start && currentTime < end) {\n                    this.logger_('Found sync point with exact match: ', syncPoint);\n                    return syncPoint;\n                }\n            } // Now find the sync-point that is closest to the currentTime because\n            // that should result in the most accurate guess about which segment\n            // to fetch\n\n            return this.selectSyncPoint_(syncPoints, {\n                key: 'time',\n                value: currentTime\n            });\n        }\n        /**\n         * Calculate the amount of time that has expired off the playlist during playback\n         *\n         * @param {Playlist} playlist\n         *        Playlist object to calculate expired from\n         * @param {number} duration\n         *        Duration of the MediaSource (Infinity if playling a live source)\n         * @return {number|null}\n         *          The amount of time that has expired off the playlist during playback. Null\n         *          if no sync-points for the playlist can be found.\n         */\n\n        getExpiredTime(playlist, duration) {\n            if (!playlist || !playlist.segments) {\n                return null;\n            }\n            const syncPoints = this.runStrategies_(playlist, duration, playlist.discontinuitySequence, 0, 'main'); // Without sync-points, there is not enough information to determine the expired time\n\n            if (!syncPoints.length) {\n                return null;\n            }\n            const syncPoint = this.selectSyncPoint_(syncPoints, {\n                key: 'segmentIndex',\n                value: 0\n            }); // If the sync-point is beyond the start of the playlist, we want to subtract the\n            // duration from index 0 to syncPoint.segmentIndex instead of adding.\n\n            if (syncPoint.segmentIndex > 0) {\n                syncPoint.time *= -1;\n            }\n            return Math.abs(syncPoint.time + sumDurations({\n                defaultDuration: playlist.targetDuration,\n                durationList: playlist.segments,\n                startIndex: syncPoint.segmentIndex,\n                endIndex: 0\n            }));\n        }\n        /**\n         * Runs each sync-point strategy and returns a list of sync-points returned by the\n         * strategies\n         *\n         * @private\n         * @param {Playlist} playlist\n         *        The playlist that needs a sync-point\n         * @param {number} duration\n         *        Duration of the MediaSource (Infinity if playing a live source)\n         * @param {number} currentTimeline\n         *        The last timeline from which a segment was loaded\n         * @param {number} currentTime\n         *        Current player's time\n         * @param {string} type\n         *        Segment loader type\n         * @return {Array}\n         *          A list of sync-point objects\n         */\n\n        runStrategies_(playlist, duration, currentTimeline, currentTime, type) {\n            const syncPoints = []; // Try to find a sync-point in by utilizing various strategies...\n\n            for (let i = 0; i < syncPointStrategies.length; i++) {\n                const strategy = syncPointStrategies[i];\n                const syncPoint = strategy.run(this, playlist, duration, currentTimeline, currentTime, type);\n                if (syncPoint) {\n                    syncPoint.strategy = strategy.name;\n                    syncPoints.push({\n                        strategy: strategy.name,\n                        syncPoint\n                    });\n                }\n            }\n            return syncPoints;\n        }\n        /**\n         * Selects the sync-point nearest the specified target\n         *\n         * @private\n         * @param {Array} syncPoints\n         *        List of sync-points to select from\n         * @param {Object} target\n         *        Object specifying the property and value we are targeting\n         * @param {string} target.key\n         *        Specifies the property to target. Must be either 'time' or 'segmentIndex'\n         * @param {number} target.value\n         *        The value to target for the specified key.\n         * @return {Object}\n         *          The sync-point nearest the target\n         */\n\n        selectSyncPoint_(syncPoints, target) {\n            let bestSyncPoint = syncPoints[0].syncPoint;\n            let bestDistance = Math.abs(syncPoints[0].syncPoint[target.key] - target.value);\n            let bestStrategy = syncPoints[0].strategy;\n            for (let i = 1; i < syncPoints.length; i++) {\n                const newDistance = Math.abs(syncPoints[i].syncPoint[target.key] - target.value);\n                if (newDistance < bestDistance) {\n                    bestDistance = newDistance;\n                    bestSyncPoint = syncPoints[i].syncPoint;\n                    bestStrategy = syncPoints[i].strategy;\n                }\n            }\n            this.logger_(`syncPoint for [${target.key}: ${target.value}] chosen with strategy` + ` [${bestStrategy}]: [time:${bestSyncPoint.time},` + ` segmentIndex:${bestSyncPoint.segmentIndex}` + (typeof bestSyncPoint.partIndex === 'number' ? `,partIndex:${bestSyncPoint.partIndex}` : '') + ']');\n            return bestSyncPoint;\n        }\n        /**\n         * Save any meta-data present on the segments when segments leave\n         * the live window to the playlist to allow for synchronization at the\n         * playlist level later.\n         *\n         * @param {Playlist} oldPlaylist - The previous active playlist\n         * @param {Playlist} newPlaylist - The updated and most current playlist\n         */\n\n        saveExpiredSegmentInfo(oldPlaylist, newPlaylist) {\n            const mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence; // Ignore large media sequence gaps\n\n            if (mediaSequenceDiff > MAX_MEDIA_SEQUENCE_DIFF_FOR_SYNC) {\n                videojs.log.warn(`Not saving expired segment info. Media sequence gap ${mediaSequenceDiff} is too large.`);\n                return;\n            } // When a segment expires from the playlist and it has a start time\n            // save that information as a possible sync-point reference in future\n\n            for (let i = mediaSequenceDiff - 1; i >= 0; i--) {\n                const lastRemovedSegment = oldPlaylist.segments[i];\n                if (lastRemovedSegment && typeof lastRemovedSegment.start !== 'undefined') {\n                    newPlaylist.syncInfo = {\n                        mediaSequence: oldPlaylist.mediaSequence + i,\n                        time: lastRemovedSegment.start\n                    };\n                    this.logger_(`playlist refresh sync: [time:${newPlaylist.syncInfo.time},` + ` mediaSequence: ${newPlaylist.syncInfo.mediaSequence}]`);\n                    this.trigger('syncinfoupdate');\n                    break;\n                }\n            }\n        }\n        /**\n         * Save the mapping from playlist's ProgramDateTime to display. This should only happen\n         * before segments start to load.\n         *\n         * @param {Playlist} playlist - The currently active playlist\n         */\n\n        setDateTimeMappingForStart(playlist) {\n            // It's possible for the playlist to be updated before playback starts, meaning time\n            // zero is not yet set. If, during these playlist refreshes, a discontinuity is\n            // crossed, then the old time zero mapping (for the prior timeline) would be retained\n            // unless the mappings are cleared.\n            this.timelineToDatetimeMappings = {};\n            if (playlist.segments && playlist.segments.length && playlist.segments[0].dateTimeObject) {\n                const firstSegment = playlist.segments[0];\n                const playlistTimestamp = firstSegment.dateTimeObject.getTime() / 1000;\n                this.timelineToDatetimeMappings[firstSegment.timeline] = -playlistTimestamp;\n            }\n        }\n        /**\n         * Calculates and saves timeline mappings, playlist sync info, and segment timing values\n         * based on the latest timing information.\n         *\n         * @param {Object} options\n         *        Options object\n         * @param {SegmentInfo} options.segmentInfo\n         *        The current active request information\n         * @param {boolean} options.shouldSaveTimelineMapping\n         *        If there's a timeline change, determines if the timeline mapping should be\n         *        saved for timeline mapping and program date time mappings.\n         */\n\n        saveSegmentTimingInfo({\n                                  segmentInfo,\n                                  shouldSaveTimelineMapping\n                              }) {\n            const didCalculateSegmentTimeMapping = this.calculateSegmentTimeMapping_(segmentInfo, segmentInfo.timingInfo, shouldSaveTimelineMapping);\n            const segment = segmentInfo.segment;\n            if (didCalculateSegmentTimeMapping) {\n                this.saveDiscontinuitySyncInfo_(segmentInfo); // If the playlist does not have sync information yet, record that information\n                // now with segment timing information\n\n                if (!segmentInfo.playlist.syncInfo) {\n                    segmentInfo.playlist.syncInfo = {\n                        mediaSequence: segmentInfo.playlist.mediaSequence + segmentInfo.mediaIndex,\n                        time: segment.start\n                    };\n                }\n            }\n            const dateTime = segment.dateTimeObject;\n            if (segment.discontinuity && shouldSaveTimelineMapping && dateTime) {\n                this.timelineToDatetimeMappings[segment.timeline] = -(dateTime.getTime() / 1000);\n            }\n        }\n        timestampOffsetForTimeline(timeline) {\n            if (typeof this.timelines[timeline] === 'undefined') {\n                return null;\n            }\n            return this.timelines[timeline].time;\n        }\n        mappingForTimeline(timeline) {\n            if (typeof this.timelines[timeline] === 'undefined') {\n                return null;\n            }\n            return this.timelines[timeline].mapping;\n        }\n        /**\n         * Use the \"media time\" for a segment to generate a mapping to \"display time\" and\n         * save that display time to the segment.\n         *\n         * @private\n         * @param {SegmentInfo} segmentInfo\n         *        The current active request information\n         * @param {Object} timingInfo\n         *        The start and end time of the current segment in \"media time\"\n         * @param {boolean} shouldSaveTimelineMapping\n         *        If there's a timeline change, determines if the timeline mapping should be\n         *        saved in timelines.\n         * @return {boolean}\n         *          Returns false if segment time mapping could not be calculated\n         */\n\n        calculateSegmentTimeMapping_(segmentInfo, timingInfo, shouldSaveTimelineMapping) {\n            // TODO: remove side effects\n            const segment = segmentInfo.segment;\n            const part = segmentInfo.part;\n            let mappingObj = this.timelines[segmentInfo.timeline];\n            let start;\n            let end;\n            if (typeof segmentInfo.timestampOffset === 'number') {\n                mappingObj = {\n                    time: segmentInfo.startOfSegment,\n                    mapping: segmentInfo.startOfSegment - timingInfo.start\n                };\n                if (shouldSaveTimelineMapping) {\n                    this.timelines[segmentInfo.timeline] = mappingObj;\n                    this.trigger('timestampoffset');\n                    this.logger_(`time mapping for timeline ${segmentInfo.timeline}: ` + `[time: ${mappingObj.time}] [mapping: ${mappingObj.mapping}]`);\n                }\n                start = segmentInfo.startOfSegment;\n                end = timingInfo.end + mappingObj.mapping;\n            } else if (mappingObj) {\n                start = timingInfo.start + mappingObj.mapping;\n                end = timingInfo.end + mappingObj.mapping;\n            } else {\n                return false;\n            }\n            if (part) {\n                part.start = start;\n                part.end = end;\n            } // If we don't have a segment start yet or the start value we got\n            // is less than our current segment.start value, save a new start value.\n            // We have to do this because parts will have segment timing info saved\n            // multiple times and we want segment start to be the earliest part start\n            // value for that segment.\n\n            if (!segment.start || start < segment.start) {\n                segment.start = start;\n            }\n            segment.end = end;\n            return true;\n        }\n        /**\n         * Each time we have discontinuity in the playlist, attempt to calculate the location\n         * in display of the start of the discontinuity and save that. We also save an accuracy\n         * value so that we save values with the most accuracy (closest to 0.)\n         *\n         * @private\n         * @param {SegmentInfo} segmentInfo - The current active request information\n         */\n\n        saveDiscontinuitySyncInfo_(segmentInfo) {\n            const playlist = segmentInfo.playlist;\n            const segment = segmentInfo.segment; // If the current segment is a discontinuity then we know exactly where\n            // the start of the range and it's accuracy is 0 (greater accuracy values\n            // mean more approximation)\n\n            if (segment.discontinuity) {\n                this.discontinuities[segment.timeline] = {\n                    time: segment.start,\n                    accuracy: 0\n                };\n            } else if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) {\n                // Search for future discontinuities that we can provide better timing\n                // information for and save that information for sync purposes\n                for (let i = 0; i < playlist.discontinuityStarts.length; i++) {\n                    const segmentIndex = playlist.discontinuityStarts[i];\n                    const discontinuity = playlist.discontinuitySequence + i + 1;\n                    const mediaIndexDiff = segmentIndex - segmentInfo.mediaIndex;\n                    const accuracy = Math.abs(mediaIndexDiff);\n                    if (!this.discontinuities[discontinuity] || this.discontinuities[discontinuity].accuracy > accuracy) {\n                        let time;\n                        if (mediaIndexDiff < 0) {\n                            time = segment.start - sumDurations({\n                                defaultDuration: playlist.targetDuration,\n                                durationList: playlist.segments,\n                                startIndex: segmentInfo.mediaIndex,\n                                endIndex: segmentIndex\n                            });\n                        } else {\n                            time = segment.end + sumDurations({\n                                defaultDuration: playlist.targetDuration,\n                                durationList: playlist.segments,\n                                startIndex: segmentInfo.mediaIndex + 1,\n                                endIndex: segmentIndex\n                            });\n                        }\n                        this.discontinuities[discontinuity] = {\n                            time,\n                            accuracy\n                        };\n                    }\n                }\n            }\n        }\n        dispose() {\n            this.trigger('dispose');\n            this.off();\n        }\n    }\n\n    /**\n     * The TimelineChangeController acts as a source for segment loaders to listen for and\n     * keep track of latest and pending timeline changes. This is useful to ensure proper\n     * sync, as each loader may need to make a consideration for what timeline the other\n     * loader is on before making changes which could impact the other loader's media.\n     *\n     * @class TimelineChangeController\n     * @extends videojs.EventTarget\n     */\n\n    class TimelineChangeController extends videojs.EventTarget {\n        constructor() {\n            super();\n            this.pendingTimelineChanges_ = {};\n            this.lastTimelineChanges_ = {};\n        }\n        clearPendingTimelineChange(type) {\n            this.pendingTimelineChanges_[type] = null;\n            this.trigger('pendingtimelinechange');\n        }\n        pendingTimelineChange({\n                                  type,\n                                  from,\n                                  to\n                              }) {\n            if (typeof from === 'number' && typeof to === 'number') {\n                this.pendingTimelineChanges_[type] = {\n                    type,\n                    from,\n                    to\n                };\n                this.trigger('pendingtimelinechange');\n            }\n            return this.pendingTimelineChanges_[type];\n        }\n        lastTimelineChange({\n                               type,\n                               from,\n                               to\n                           }) {\n            if (typeof from === 'number' && typeof to === 'number') {\n                this.lastTimelineChanges_[type] = {\n                    type,\n                    from,\n                    to\n                };\n                delete this.pendingTimelineChanges_[type];\n                this.trigger('timelinechange');\n            }\n            return this.lastTimelineChanges_[type];\n        }\n        dispose() {\n            this.trigger('dispose');\n            this.pendingTimelineChanges_ = {};\n            this.lastTimelineChanges_ = {};\n            this.off();\n        }\n    }\n\n    /* rollup-plugin-worker-factory start for worker!/home/runner/work/http-streaming/http-streaming/src/decrypter-worker.js */\n    const workerCode = transform(getWorkerString(function () {\n        /**\n         * @file stream.js\n         */\n\n        /**\n         * A lightweight readable stream implemention that handles event dispatching.\n         *\n         * @class Stream\n         */\n\n        var Stream = /*#__PURE__*/function () {\n            function Stream() {\n                this.listeners = {};\n            }\n            /**\n             * Add a listener for a specified event type.\n             *\n             * @param {string} type the event name\n             * @param {Function} listener the callback to be invoked when an event of\n             * the specified type occurs\n             */\n\n            var _proto = Stream.prototype;\n            _proto.on = function on(type, listener) {\n                if (!this.listeners[type]) {\n                    this.listeners[type] = [];\n                }\n                this.listeners[type].push(listener);\n            }\n            /**\n             * Remove a listener for a specified event type.\n             *\n             * @param {string} type the event name\n             * @param {Function} listener  a function previously registered for this\n             * type of event through `on`\n             * @return {boolean} if we could turn it off or not\n             */;\n\n            _proto.off = function off(type, listener) {\n                if (!this.listeners[type]) {\n                    return false;\n                }\n                var index = this.listeners[type].indexOf(listener); // TODO: which is better?\n                // In Video.js we slice listener functions\n                // on trigger so that it does not mess up the order\n                // while we loop through.\n                //\n                // Here we slice on off so that the loop in trigger\n                // can continue using it's old reference to loop without\n                // messing up the order.\n\n                this.listeners[type] = this.listeners[type].slice(0);\n                this.listeners[type].splice(index, 1);\n                return index > -1;\n            }\n            /**\n             * Trigger an event of the specified type on this stream. Any additional\n             * arguments to this function are passed as parameters to event listeners.\n             *\n             * @param {string} type the event name\n             */;\n\n            _proto.trigger = function trigger(type) {\n                var callbacks = this.listeners[type];\n                if (!callbacks) {\n                    return;\n                } // Slicing the arguments on every invocation of this method\n                // can add a significant amount of overhead. Avoid the\n                // intermediate object creation for the common case of a\n                // single callback argument\n\n                if (arguments.length === 2) {\n                    var length = callbacks.length;\n                    for (var i = 0; i < length; ++i) {\n                        callbacks[i].call(this, arguments[1]);\n                    }\n                } else {\n                    var args = Array.prototype.slice.call(arguments, 1);\n                    var _length = callbacks.length;\n                    for (var _i = 0; _i < _length; ++_i) {\n                        callbacks[_i].apply(this, args);\n                    }\n                }\n            }\n            /**\n             * Destroys the stream and cleans up.\n             */;\n\n            _proto.dispose = function dispose() {\n                this.listeners = {};\n            }\n            /**\n             * Forwards all `data` events on this stream to the destination stream. The\n             * destination stream should provide a method `push` to receive the data\n             * events as they arrive.\n             *\n             * @param {Stream} destination the stream that will receive all `data` events\n             * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options\n             */;\n\n            _proto.pipe = function pipe(destination) {\n                this.on('data', function (data) {\n                    destination.push(data);\n                });\n            };\n            return Stream;\n        }();\n        /*! @name pkcs7 @version 1.0.4 @license Apache-2.0 */\n\n        /**\n         * Returns the subarray of a Uint8Array without PKCS#7 padding.\n         *\n         * @param padded {Uint8Array} unencrypted bytes that have been padded\n         * @return {Uint8Array} the unpadded bytes\n         * @see http://tools.ietf.org/html/rfc5652\n         */\n\n        function unpad(padded) {\n            return padded.subarray(0, padded.byteLength - padded[padded.byteLength - 1]);\n        }\n        /*! @name aes-decrypter @version 4.0.1 @license Apache-2.0 */\n\n        /**\n         * @file aes.js\n         *\n         * This file contains an adaptation of the AES decryption algorithm\n         * from the Standford Javascript Cryptography Library. That work is\n         * covered by the following copyright and permissions notice:\n         *\n         * Copyright 2009-2010 Emily Stark, Mike Hamburg, Dan Boneh.\n         * All rights reserved.\n         *\n         * Redistribution and use in source and binary forms, with or without\n         * modification, are permitted provided that the following conditions are\n         * met:\n         *\n         * 1. Redistributions of source code must retain the above copyright\n         *    notice, this list of conditions and the following disclaimer.\n         *\n         * 2. Redistributions in binary form must reproduce the above\n         *    copyright notice, this list of conditions and the following\n         *    disclaimer in the documentation and/or other materials provided\n         *    with the distribution.\n         *\n         * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR\n         * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n         * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\n         * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR CONTRIBUTORS BE\n         * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\n         * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\n         * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR\n         * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,\n         * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE\n         * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN\n         * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n         *\n         * The views and conclusions contained in the software and documentation\n         * are those of the authors and should not be interpreted as representing\n         * official policies, either expressed or implied, of the authors.\n         */\n\n        /**\n         * Expand the S-box tables.\n         *\n         * @private\n         */\n\n        const precompute = function () {\n            const tables = [[[], [], [], [], []], [[], [], [], [], []]];\n            const encTable = tables[0];\n            const decTable = tables[1];\n            const sbox = encTable[4];\n            const sboxInv = decTable[4];\n            let i;\n            let x;\n            let xInv;\n            const d = [];\n            const th = [];\n            let x2;\n            let x4;\n            let x8;\n            let s;\n            let tEnc;\n            let tDec; // Compute double and third tables\n\n            for (i = 0; i < 256; i++) {\n                th[(d[i] = i << 1 ^ (i >> 7) * 283) ^ i] = i;\n            }\n            for (x = xInv = 0; !sbox[x]; x ^= x2 || 1, xInv = th[xInv] || 1) {\n                // Compute sbox\n                s = xInv ^ xInv << 1 ^ xInv << 2 ^ xInv << 3 ^ xInv << 4;\n                s = s >> 8 ^ s & 255 ^ 99;\n                sbox[x] = s;\n                sboxInv[s] = x; // Compute MixColumns\n\n                x8 = d[x4 = d[x2 = d[x]]];\n                tDec = x8 * 0x1010101 ^ x4 * 0x10001 ^ x2 * 0x101 ^ x * 0x1010100;\n                tEnc = d[s] * 0x101 ^ s * 0x1010100;\n                for (i = 0; i < 4; i++) {\n                    encTable[i][x] = tEnc = tEnc << 24 ^ tEnc >>> 8;\n                    decTable[i][s] = tDec = tDec << 24 ^ tDec >>> 8;\n                }\n            } // Compactify. Considerable speedup on Firefox.\n\n            for (i = 0; i < 5; i++) {\n                encTable[i] = encTable[i].slice(0);\n                decTable[i] = decTable[i].slice(0);\n            }\n            return tables;\n        };\n        let aesTables = null;\n        /**\n         * Schedule out an AES key for both encryption and decryption. This\n         * is a low-level class. Use a cipher mode to do bulk encryption.\n         *\n         * @class AES\n         * @param key {Array} The key as an array of 4, 6 or 8 words.\n         */\n\n        class AES {\n            constructor(key) {\n                /**\n                 * The expanded S-box and inverse S-box tables. These will be computed\n                 * on the client so that we don't have to send them down the wire.\n                 *\n                 * There are two tables, _tables[0] is for encryption and\n                 * _tables[1] is for decryption.\n                 *\n                 * The first 4 sub-tables are the expanded S-box with MixColumns. The\n                 * last (_tables[01][4]) is the S-box itself.\n                 *\n                 * @private\n                 */\n                // if we have yet to precompute the S-box tables\n                // do so now\n                if (!aesTables) {\n                    aesTables = precompute();\n                } // then make a copy of that object for use\n\n                this._tables = [[aesTables[0][0].slice(), aesTables[0][1].slice(), aesTables[0][2].slice(), aesTables[0][3].slice(), aesTables[0][4].slice()], [aesTables[1][0].slice(), aesTables[1][1].slice(), aesTables[1][2].slice(), aesTables[1][3].slice(), aesTables[1][4].slice()]];\n                let i;\n                let j;\n                let tmp;\n                const sbox = this._tables[0][4];\n                const decTable = this._tables[1];\n                const keyLen = key.length;\n                let rcon = 1;\n                if (keyLen !== 4 && keyLen !== 6 && keyLen !== 8) {\n                    throw new Error('Invalid aes key size');\n                }\n                const encKey = key.slice(0);\n                const decKey = [];\n                this._key = [encKey, decKey]; // schedule encryption keys\n\n                for (i = keyLen; i < 4 * keyLen + 28; i++) {\n                    tmp = encKey[i - 1]; // apply sbox\n\n                    if (i % keyLen === 0 || keyLen === 8 && i % keyLen === 4) {\n                        tmp = sbox[tmp >>> 24] << 24 ^ sbox[tmp >> 16 & 255] << 16 ^ sbox[tmp >> 8 & 255] << 8 ^ sbox[tmp & 255]; // shift rows and add rcon\n\n                        if (i % keyLen === 0) {\n                            tmp = tmp << 8 ^ tmp >>> 24 ^ rcon << 24;\n                            rcon = rcon << 1 ^ (rcon >> 7) * 283;\n                        }\n                    }\n                    encKey[i] = encKey[i - keyLen] ^ tmp;\n                } // schedule decryption keys\n\n                for (j = 0; i; j++, i--) {\n                    tmp = encKey[j & 3 ? i : i - 4];\n                    if (i <= 4 || j < 4) {\n                        decKey[j] = tmp;\n                    } else {\n                        decKey[j] = decTable[0][sbox[tmp >>> 24]] ^ decTable[1][sbox[tmp >> 16 & 255]] ^ decTable[2][sbox[tmp >> 8 & 255]] ^ decTable[3][sbox[tmp & 255]];\n                    }\n                }\n            }\n            /**\n             * Decrypt 16 bytes, specified as four 32-bit words.\n             *\n             * @param {number} encrypted0 the first word to decrypt\n             * @param {number} encrypted1 the second word to decrypt\n             * @param {number} encrypted2 the third word to decrypt\n             * @param {number} encrypted3 the fourth word to decrypt\n             * @param {Int32Array} out the array to write the decrypted words\n             * into\n             * @param {number} offset the offset into the output array to start\n             * writing results\n             * @return {Array} The plaintext.\n             */\n\n            decrypt(encrypted0, encrypted1, encrypted2, encrypted3, out, offset) {\n                const key = this._key[1]; // state variables a,b,c,d are loaded with pre-whitened data\n\n                let a = encrypted0 ^ key[0];\n                let b = encrypted3 ^ key[1];\n                let c = encrypted2 ^ key[2];\n                let d = encrypted1 ^ key[3];\n                let a2;\n                let b2;\n                let c2; // key.length === 2 ?\n\n                const nInnerRounds = key.length / 4 - 2;\n                let i;\n                let kIndex = 4;\n                const table = this._tables[1]; // load up the tables\n\n                const table0 = table[0];\n                const table1 = table[1];\n                const table2 = table[2];\n                const table3 = table[3];\n                const sbox = table[4]; // Inner rounds. Cribbed from OpenSSL.\n\n                for (i = 0; i < nInnerRounds; i++) {\n                    a2 = table0[a >>> 24] ^ table1[b >> 16 & 255] ^ table2[c >> 8 & 255] ^ table3[d & 255] ^ key[kIndex];\n                    b2 = table0[b >>> 24] ^ table1[c >> 16 & 255] ^ table2[d >> 8 & 255] ^ table3[a & 255] ^ key[kIndex + 1];\n                    c2 = table0[c >>> 24] ^ table1[d >> 16 & 255] ^ table2[a >> 8 & 255] ^ table3[b & 255] ^ key[kIndex + 2];\n                    d = table0[d >>> 24] ^ table1[a >> 16 & 255] ^ table2[b >> 8 & 255] ^ table3[c & 255] ^ key[kIndex + 3];\n                    kIndex += 4;\n                    a = a2;\n                    b = b2;\n                    c = c2;\n                } // Last round.\n\n                for (i = 0; i < 4; i++) {\n                    out[(3 & -i) + offset] = sbox[a >>> 24] << 24 ^ sbox[b >> 16 & 255] << 16 ^ sbox[c >> 8 & 255] << 8 ^ sbox[d & 255] ^ key[kIndex++];\n                    a2 = a;\n                    a = b;\n                    b = c;\n                    c = d;\n                    d = a2;\n                }\n            }\n        }\n        /**\n         * @file async-stream.js\n         */\n\n        /**\n         * A wrapper around the Stream class to use setTimeout\n         * and run stream \"jobs\" Asynchronously\n         *\n         * @class AsyncStream\n         * @extends Stream\n         */\n\n        class AsyncStream extends Stream {\n            constructor() {\n                super(Stream);\n                this.jobs = [];\n                this.delay = 1;\n                this.timeout_ = null;\n            }\n            /**\n             * process an async job\n             *\n             * @private\n             */\n\n            processJob_() {\n                this.jobs.shift()();\n                if (this.jobs.length) {\n                    this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);\n                } else {\n                    this.timeout_ = null;\n                }\n            }\n            /**\n             * push a job into the stream\n             *\n             * @param {Function} job the job to push into the stream\n             */\n\n            push(job) {\n                this.jobs.push(job);\n                if (!this.timeout_) {\n                    this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);\n                }\n            }\n        }\n        /**\n         * @file decrypter.js\n         *\n         * An asynchronous implementation of AES-128 CBC decryption with\n         * PKCS#7 padding.\n         */\n\n        /**\n         * Convert network-order (big-endian) bytes into their little-endian\n         * representation.\n         */\n\n        const ntoh = function (word) {\n            return word << 24 | (word & 0xff00) << 8 | (word & 0xff0000) >> 8 | word >>> 24;\n        };\n        /**\n         * Decrypt bytes using AES-128 with CBC and PKCS#7 padding.\n         *\n         * @param {Uint8Array} encrypted the encrypted bytes\n         * @param {Uint32Array} key the bytes of the decryption key\n         * @param {Uint32Array} initVector the initialization vector (IV) to\n         * use for the first round of CBC.\n         * @return {Uint8Array} the decrypted bytes\n         *\n         * @see http://en.wikipedia.org/wiki/Advanced_Encryption_Standard\n         * @see http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Cipher_Block_Chaining_.28CBC.29\n         * @see https://tools.ietf.org/html/rfc2315\n         */\n\n        const decrypt = function (encrypted, key, initVector) {\n            // word-level access to the encrypted bytes\n            const encrypted32 = new Int32Array(encrypted.buffer, encrypted.byteOffset, encrypted.byteLength >> 2);\n            const decipher = new AES(Array.prototype.slice.call(key)); // byte and word-level access for the decrypted output\n\n            const decrypted = new Uint8Array(encrypted.byteLength);\n            const decrypted32 = new Int32Array(decrypted.buffer); // temporary variables for working with the IV, encrypted, and\n            // decrypted data\n\n            let init0;\n            let init1;\n            let init2;\n            let init3;\n            let encrypted0;\n            let encrypted1;\n            let encrypted2;\n            let encrypted3; // iteration variable\n\n            let wordIx; // pull out the words of the IV to ensure we don't modify the\n            // passed-in reference and easier access\n\n            init0 = initVector[0];\n            init1 = initVector[1];\n            init2 = initVector[2];\n            init3 = initVector[3]; // decrypt four word sequences, applying cipher-block chaining (CBC)\n            // to each decrypted block\n\n            for (wordIx = 0; wordIx < encrypted32.length; wordIx += 4) {\n                // convert big-endian (network order) words into little-endian\n                // (javascript order)\n                encrypted0 = ntoh(encrypted32[wordIx]);\n                encrypted1 = ntoh(encrypted32[wordIx + 1]);\n                encrypted2 = ntoh(encrypted32[wordIx + 2]);\n                encrypted3 = ntoh(encrypted32[wordIx + 3]); // decrypt the block\n\n                decipher.decrypt(encrypted0, encrypted1, encrypted2, encrypted3, decrypted32, wordIx); // XOR with the IV, and restore network byte-order to obtain the\n                // plaintext\n\n                decrypted32[wordIx] = ntoh(decrypted32[wordIx] ^ init0);\n                decrypted32[wordIx + 1] = ntoh(decrypted32[wordIx + 1] ^ init1);\n                decrypted32[wordIx + 2] = ntoh(decrypted32[wordIx + 2] ^ init2);\n                decrypted32[wordIx + 3] = ntoh(decrypted32[wordIx + 3] ^ init3); // setup the IV for the next round\n\n                init0 = encrypted0;\n                init1 = encrypted1;\n                init2 = encrypted2;\n                init3 = encrypted3;\n            }\n            return decrypted;\n        };\n        /**\n         * The `Decrypter` class that manages decryption of AES\n         * data through `AsyncStream` objects and the `decrypt`\n         * function\n         *\n         * @param {Uint8Array} encrypted the encrypted bytes\n         * @param {Uint32Array} key the bytes of the decryption key\n         * @param {Uint32Array} initVector the initialization vector (IV) to\n         * @param {Function} done the function to run when done\n         * @class Decrypter\n         */\n\n        class Decrypter {\n            constructor(encrypted, key, initVector, done) {\n                const step = Decrypter.STEP;\n                const encrypted32 = new Int32Array(encrypted.buffer);\n                const decrypted = new Uint8Array(encrypted.byteLength);\n                let i = 0;\n                this.asyncStream_ = new AsyncStream(); // split up the encryption job and do the individual chunks asynchronously\n\n                this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));\n                for (i = step; i < encrypted32.length; i += step) {\n                    initVector = new Uint32Array([ntoh(encrypted32[i - 4]), ntoh(encrypted32[i - 3]), ntoh(encrypted32[i - 2]), ntoh(encrypted32[i - 1])]);\n                    this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));\n                } // invoke the done() callback when everything is finished\n\n                this.asyncStream_.push(function () {\n                    // remove pkcs#7 padding from the decrypted bytes\n                    done(null, unpad(decrypted));\n                });\n            }\n            /**\n             * a getter for step the maximum number of bytes to process at one time\n             *\n             * @return {number} the value of step 32000\n             */\n\n            static get STEP() {\n                // 4 * 8000;\n                return 32000;\n            }\n            /**\n             * @private\n             */\n\n            decryptChunk_(encrypted, key, initVector, decrypted) {\n                return function () {\n                    const bytes = decrypt(encrypted, key, initVector);\n                    decrypted.set(bytes, encrypted.byteOffset);\n                };\n            }\n        }\n        var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};\n        var win;\n        if (typeof window !== \"undefined\") {\n            win = window;\n        } else if (typeof commonjsGlobal !== \"undefined\") {\n            win = commonjsGlobal;\n        } else if (typeof self !== \"undefined\") {\n            win = self;\n        } else {\n            win = {};\n        }\n        var window_1 = win;\n        var isArrayBufferView = function isArrayBufferView(obj) {\n            if (ArrayBuffer.isView === 'function') {\n                return ArrayBuffer.isView(obj);\n            }\n            return obj && obj.buffer instanceof ArrayBuffer;\n        };\n        var BigInt = window_1.BigInt || Number;\n        [BigInt('0x1'), BigInt('0x100'), BigInt('0x10000'), BigInt('0x1000000'), BigInt('0x100000000'), BigInt('0x10000000000'), BigInt('0x1000000000000'), BigInt('0x100000000000000'), BigInt('0x10000000000000000')];\n        (function () {\n            var a = new Uint16Array([0xFFCC]);\n            var b = new Uint8Array(a.buffer, a.byteOffset, a.byteLength);\n            if (b[0] === 0xFF) {\n                return 'big';\n            }\n            if (b[0] === 0xCC) {\n                return 'little';\n            }\n            return 'unknown';\n        })();\n        /**\n         * Creates an object for sending to a web worker modifying properties that are TypedArrays\n         * into a new object with seperated properties for the buffer, byteOffset, and byteLength.\n         *\n         * @param {Object} message\n         *        Object of properties and values to send to the web worker\n         * @return {Object}\n         *         Modified message with TypedArray values expanded\n         * @function createTransferableMessage\n         */\n\n        const createTransferableMessage = function (message) {\n            const transferable = {};\n            Object.keys(message).forEach(key => {\n                const value = message[key];\n                if (isArrayBufferView(value)) {\n                    transferable[key] = {\n                        bytes: value.buffer,\n                        byteOffset: value.byteOffset,\n                        byteLength: value.byteLength\n                    };\n                } else {\n                    transferable[key] = value;\n                }\n            });\n            return transferable;\n        };\n        /* global self */\n\n        /**\n         * Our web worker interface so that things can talk to aes-decrypter\n         * that will be running in a web worker. the scope is passed to this by\n         * webworkify.\n         */\n\n        self.onmessage = function (event) {\n            const data = event.data;\n            const encrypted = new Uint8Array(data.encrypted.bytes, data.encrypted.byteOffset, data.encrypted.byteLength);\n            const key = new Uint32Array(data.key.bytes, data.key.byteOffset, data.key.byteLength / 4);\n            const iv = new Uint32Array(data.iv.bytes, data.iv.byteOffset, data.iv.byteLength / 4);\n            /* eslint-disable no-new, handle-callback-err */\n\n            new Decrypter(encrypted, key, iv, function (err, bytes) {\n                self.postMessage(createTransferableMessage({\n                    source: data.source,\n                    decrypted: bytes\n                }), [bytes.buffer]);\n            });\n            /* eslint-enable */\n        };\n    }));\n\n    var Decrypter = factory(workerCode);\n    /* rollup-plugin-worker-factory end for worker!/home/runner/work/http-streaming/http-streaming/src/decrypter-worker.js */\n\n    /**\n     * Convert the properties of an HLS track into an audioTrackKind.\n     *\n     * @private\n     */\n\n    const audioTrackKind_ = properties => {\n        let kind = properties.default ? 'main' : 'alternative';\n        if (properties.characteristics && properties.characteristics.indexOf('public.accessibility.describes-video') >= 0) {\n            kind = 'main-desc';\n        }\n        return kind;\n    };\n    /**\n     * Pause provided segment loader and playlist loader if active\n     *\n     * @param {SegmentLoader} segmentLoader\n     *        SegmentLoader to pause\n     * @param {Object} mediaType\n     *        Active media type\n     * @function stopLoaders\n     */\n\n    const stopLoaders = (segmentLoader, mediaType) => {\n        segmentLoader.abort();\n        segmentLoader.pause();\n        if (mediaType && mediaType.activePlaylistLoader) {\n            mediaType.activePlaylistLoader.pause();\n            mediaType.activePlaylistLoader = null;\n        }\n    };\n    /**\n     * Start loading provided segment loader and playlist loader\n     *\n     * @param {PlaylistLoader} playlistLoader\n     *        PlaylistLoader to start loading\n     * @param {Object} mediaType\n     *        Active media type\n     * @function startLoaders\n     */\n\n    const startLoaders = (playlistLoader, mediaType) => {\n        // Segment loader will be started after `loadedmetadata` or `loadedplaylist` from the\n        // playlist loader\n        mediaType.activePlaylistLoader = playlistLoader;\n        playlistLoader.load();\n    };\n    /**\n     * Returns a function to be called when the media group changes. It performs a\n     * non-destructive (preserve the buffer) resync of the SegmentLoader. This is because a\n     * change of group is merely a rendition switch of the same content at another encoding,\n     * rather than a change of content, such as switching audio from English to Spanish.\n     *\n     * @param {string} type\n     *        MediaGroup type\n     * @param {Object} settings\n     *        Object containing required information for media groups\n     * @return {Function}\n     *         Handler for a non-destructive resync of SegmentLoader when the active media\n     *         group changes.\n     * @function onGroupChanged\n     */\n\n    const onGroupChanged = (type, settings) => () => {\n        const {\n            segmentLoaders: {\n                [type]: segmentLoader,\n                main: mainSegmentLoader\n            },\n            mediaTypes: {\n                [type]: mediaType\n            }\n        } = settings;\n        const activeTrack = mediaType.activeTrack();\n        const activeGroup = mediaType.getActiveGroup();\n        const previousActiveLoader = mediaType.activePlaylistLoader;\n        const lastGroup = mediaType.lastGroup_; // the group did not change do nothing\n\n        if (activeGroup && lastGroup && activeGroup.id === lastGroup.id) {\n            return;\n        }\n        mediaType.lastGroup_ = activeGroup;\n        mediaType.lastTrack_ = activeTrack;\n        stopLoaders(segmentLoader, mediaType);\n        if (!activeGroup || activeGroup.isMainPlaylist) {\n            // there is no group active or active group is a main playlist and won't change\n            return;\n        }\n        if (!activeGroup.playlistLoader) {\n            if (previousActiveLoader) {\n                // The previous group had a playlist loader but the new active group does not\n                // this means we are switching from demuxed to muxed audio. In this case we want to\n                // do a destructive reset of the main segment loader and not restart the audio\n                // loaders.\n                mainSegmentLoader.resetEverything();\n            }\n            return;\n        } // Non-destructive resync\n\n        segmentLoader.resyncLoader();\n        startLoaders(activeGroup.playlistLoader, mediaType);\n    };\n    const onGroupChanging = (type, settings) => () => {\n        const {\n            segmentLoaders: {\n                [type]: segmentLoader\n            },\n            mediaTypes: {\n                [type]: mediaType\n            }\n        } = settings;\n        mediaType.lastGroup_ = null;\n        segmentLoader.abort();\n        segmentLoader.pause();\n    };\n    /**\n     * Returns a function to be called when the media track changes. It performs a\n     * destructive reset of the SegmentLoader to ensure we start loading as close to\n     * currentTime as possible.\n     *\n     * @param {string} type\n     *        MediaGroup type\n     * @param {Object} settings\n     *        Object containing required information for media groups\n     * @return {Function}\n     *         Handler for a destructive reset of SegmentLoader when the active media\n     *         track changes.\n     * @function onTrackChanged\n     */\n\n    const onTrackChanged = (type, settings) => () => {\n        const {\n            mainPlaylistLoader,\n            segmentLoaders: {\n                [type]: segmentLoader,\n                main: mainSegmentLoader\n            },\n            mediaTypes: {\n                [type]: mediaType\n            }\n        } = settings;\n        const activeTrack = mediaType.activeTrack();\n        const activeGroup = mediaType.getActiveGroup();\n        const previousActiveLoader = mediaType.activePlaylistLoader;\n        const lastTrack = mediaType.lastTrack_; // track did not change, do nothing\n\n        if (lastTrack && activeTrack && lastTrack.id === activeTrack.id) {\n            return;\n        }\n        mediaType.lastGroup_ = activeGroup;\n        mediaType.lastTrack_ = activeTrack;\n        stopLoaders(segmentLoader, mediaType);\n        if (!activeGroup) {\n            // there is no group active so we do not want to restart loaders\n            return;\n        }\n        if (activeGroup.isMainPlaylist) {\n            // track did not change, do nothing\n            if (!activeTrack || !lastTrack || activeTrack.id === lastTrack.id) {\n                return;\n            }\n            const pc = settings.vhs.playlistController_;\n            const newPlaylist = pc.selectPlaylist(); // media will not change do nothing\n\n            if (pc.media() === newPlaylist) {\n                return;\n            }\n            mediaType.logger_(`track change. Switching main audio from ${lastTrack.id} to ${activeTrack.id}`);\n            mainPlaylistLoader.pause();\n            mainSegmentLoader.resetEverything();\n            pc.fastQualityChange_(newPlaylist);\n            return;\n        }\n        if (type === 'AUDIO') {\n            if (!activeGroup.playlistLoader) {\n                // when switching from demuxed audio/video to muxed audio/video (noted by no\n                // playlist loader for the audio group), we want to do a destructive reset of the\n                // main segment loader and not restart the audio loaders\n                mainSegmentLoader.setAudio(true); // don't have to worry about disabling the audio of the audio segment loader since\n                // it should be stopped\n\n                mainSegmentLoader.resetEverything();\n                return;\n            } // although the segment loader is an audio segment loader, call the setAudio\n            // function to ensure it is prepared to re-append the init segment (or handle other\n            // config changes)\n\n            segmentLoader.setAudio(true);\n            mainSegmentLoader.setAudio(false);\n        }\n        if (previousActiveLoader === activeGroup.playlistLoader) {\n            // Nothing has actually changed. This can happen because track change events can fire\n            // multiple times for a \"single\" change. One for enabling the new active track, and\n            // one for disabling the track that was active\n            startLoaders(activeGroup.playlistLoader, mediaType);\n            return;\n        }\n        if (segmentLoader.track) {\n            // For WebVTT, set the new text track in the segmentloader\n            segmentLoader.track(activeTrack);\n        } // destructive reset\n\n        segmentLoader.resetEverything();\n        startLoaders(activeGroup.playlistLoader, mediaType);\n    };\n    const onError = {\n        /**\n         * Returns a function to be called when a SegmentLoader or PlaylistLoader encounters\n         * an error.\n         *\n         * @param {string} type\n         *        MediaGroup type\n         * @param {Object} settings\n         *        Object containing required information for media groups\n         * @return {Function}\n         *         Error handler. Logs warning (or error if the playlist is excluded) to\n         *         console and switches back to default audio track.\n         * @function onError.AUDIO\n         */\n        AUDIO: (type, settings) => () => {\n            const {\n                mediaTypes: {\n                    [type]: mediaType\n                },\n                excludePlaylist\n            } = settings; // switch back to default audio track\n\n            const activeTrack = mediaType.activeTrack();\n            const activeGroup = mediaType.activeGroup();\n            const id = (activeGroup.filter(group => group.default)[0] || activeGroup[0]).id;\n            const defaultTrack = mediaType.tracks[id];\n            if (activeTrack === defaultTrack) {\n                // Default track encountered an error. All we can do now is exclude the current\n                // rendition and hope another will switch audio groups\n                excludePlaylist({\n                    error: {\n                        message: 'Problem encountered loading the default audio track.'\n                    }\n                });\n                return;\n            }\n            videojs.log.warn('Problem encountered loading the alternate audio track.' + 'Switching back to default.');\n            for (const trackId in mediaType.tracks) {\n                mediaType.tracks[trackId].enabled = mediaType.tracks[trackId] === defaultTrack;\n            }\n            mediaType.onTrackChanged();\n        },\n        /**\n         * Returns a function to be called when a SegmentLoader or PlaylistLoader encounters\n         * an error.\n         *\n         * @param {string} type\n         *        MediaGroup type\n         * @param {Object} settings\n         *        Object containing required information for media groups\n         * @return {Function}\n         *         Error handler. Logs warning to console and disables the active subtitle track\n         * @function onError.SUBTITLES\n         */\n        SUBTITLES: (type, settings) => () => {\n            const {\n                mediaTypes: {\n                    [type]: mediaType\n                }\n            } = settings;\n            videojs.log.warn('Problem encountered loading the subtitle track.' + 'Disabling subtitle track.');\n            const track = mediaType.activeTrack();\n            if (track) {\n                track.mode = 'disabled';\n            }\n            mediaType.onTrackChanged();\n        }\n    };\n    const setupListeners = {\n        /**\n         * Setup event listeners for audio playlist loader\n         *\n         * @param {string} type\n         *        MediaGroup type\n         * @param {PlaylistLoader|null} playlistLoader\n         *        PlaylistLoader to register listeners on\n         * @param {Object} settings\n         *        Object containing required information for media groups\n         * @function setupListeners.AUDIO\n         */\n        AUDIO: (type, playlistLoader, settings) => {\n            if (!playlistLoader) {\n                // no playlist loader means audio will be muxed with the video\n                return;\n            }\n            const {\n                tech,\n                requestOptions,\n                segmentLoaders: {\n                    [type]: segmentLoader\n                }\n            } = settings;\n            playlistLoader.on('loadedmetadata', () => {\n                const media = playlistLoader.media();\n                segmentLoader.playlist(media, requestOptions); // if the video is already playing, or if this isn't a live video and preload\n                // permits, start downloading segments\n\n                if (!tech.paused() || media.endList && tech.preload() !== 'none') {\n                    segmentLoader.load();\n                }\n            });\n            playlistLoader.on('loadedplaylist', () => {\n                segmentLoader.playlist(playlistLoader.media(), requestOptions); // If the player isn't paused, ensure that the segment loader is running\n\n                if (!tech.paused()) {\n                    segmentLoader.load();\n                }\n            });\n            playlistLoader.on('error', onError[type](type, settings));\n        },\n        /**\n         * Setup event listeners for subtitle playlist loader\n         *\n         * @param {string} type\n         *        MediaGroup type\n         * @param {PlaylistLoader|null} playlistLoader\n         *        PlaylistLoader to register listeners on\n         * @param {Object} settings\n         *        Object containing required information for media groups\n         * @function setupListeners.SUBTITLES\n         */\n        SUBTITLES: (type, playlistLoader, settings) => {\n            const {\n                tech,\n                requestOptions,\n                segmentLoaders: {\n                    [type]: segmentLoader\n                },\n                mediaTypes: {\n                    [type]: mediaType\n                }\n            } = settings;\n            playlistLoader.on('loadedmetadata', () => {\n                const media = playlistLoader.media();\n                segmentLoader.playlist(media, requestOptions);\n                segmentLoader.track(mediaType.activeTrack()); // if the video is already playing, or if this isn't a live video and preload\n                // permits, start downloading segments\n\n                if (!tech.paused() || media.endList && tech.preload() !== 'none') {\n                    segmentLoader.load();\n                }\n            });\n            playlistLoader.on('loadedplaylist', () => {\n                segmentLoader.playlist(playlistLoader.media(), requestOptions); // If the player isn't paused, ensure that the segment loader is running\n\n                if (!tech.paused()) {\n                    segmentLoader.load();\n                }\n            });\n            playlistLoader.on('error', onError[type](type, settings));\n        }\n    };\n    const initialize = {\n        /**\n         * Setup PlaylistLoaders and AudioTracks for the audio groups\n         *\n         * @param {string} type\n         *        MediaGroup type\n         * @param {Object} settings\n         *        Object containing required information for media groups\n         * @function initialize.AUDIO\n         */\n        'AUDIO': (type, settings) => {\n            const {\n                vhs,\n                sourceType,\n                segmentLoaders: {\n                    [type]: segmentLoader\n                },\n                requestOptions,\n                main: {\n                    mediaGroups\n                },\n                mediaTypes: {\n                    [type]: {\n                        groups,\n                        tracks,\n                        logger_\n                    }\n                },\n                mainPlaylistLoader\n            } = settings;\n            const audioOnlyMain = isAudioOnly(mainPlaylistLoader.main); // force a default if we have none\n\n            if (!mediaGroups[type] || Object.keys(mediaGroups[type]).length === 0) {\n                mediaGroups[type] = {\n                    main: {\n                        default: {\n                            default: true\n                        }\n                    }\n                };\n                if (audioOnlyMain) {\n                    mediaGroups[type].main.default.playlists = mainPlaylistLoader.main.playlists;\n                }\n            }\n            for (const groupId in mediaGroups[type]) {\n                if (!groups[groupId]) {\n                    groups[groupId] = [];\n                }\n                for (const variantLabel in mediaGroups[type][groupId]) {\n                    let properties = mediaGroups[type][groupId][variantLabel];\n                    let playlistLoader;\n                    if (audioOnlyMain) {\n                        logger_(`AUDIO group '${groupId}' label '${variantLabel}' is a main playlist`);\n                        properties.isMainPlaylist = true;\n                        playlistLoader = null; // if vhs-json was provided as the source, and the media playlist was resolved,\n                        // use the resolved media playlist object\n                    } else if (sourceType === 'vhs-json' && properties.playlists) {\n                        playlistLoader = new PlaylistLoader(properties.playlists[0], vhs, requestOptions);\n                    } else if (properties.resolvedUri) {\n                        playlistLoader = new PlaylistLoader(properties.resolvedUri, vhs, requestOptions); // TODO: dash isn't the only type with properties.playlists\n                        // should we even have properties.playlists in this check.\n                    } else if (properties.playlists && sourceType === 'dash') {\n                        playlistLoader = new DashPlaylistLoader(properties.playlists[0], vhs, requestOptions, mainPlaylistLoader);\n                    } else {\n                        // no resolvedUri means the audio is muxed with the video when using this\n                        // audio track\n                        playlistLoader = null;\n                    }\n                    properties = merge({\n                        id: variantLabel,\n                        playlistLoader\n                    }, properties);\n                    setupListeners[type](type, properties.playlistLoader, settings);\n                    groups[groupId].push(properties);\n                    if (typeof tracks[variantLabel] === 'undefined') {\n                        const track = new videojs.AudioTrack({\n                            id: variantLabel,\n                            kind: audioTrackKind_(properties),\n                            enabled: false,\n                            language: properties.language,\n                            default: properties.default,\n                            label: variantLabel\n                        });\n                        tracks[variantLabel] = track;\n                    }\n                }\n            } // setup single error event handler for the segment loader\n\n            segmentLoader.on('error', onError[type](type, settings));\n        },\n        /**\n         * Setup PlaylistLoaders and TextTracks for the subtitle groups\n         *\n         * @param {string} type\n         *        MediaGroup type\n         * @param {Object} settings\n         *        Object containing required information for media groups\n         * @function initialize.SUBTITLES\n         */\n        'SUBTITLES': (type, settings) => {\n            const {\n                tech,\n                vhs,\n                sourceType,\n                segmentLoaders: {\n                    [type]: segmentLoader\n                },\n                requestOptions,\n                main: {\n                    mediaGroups\n                },\n                mediaTypes: {\n                    [type]: {\n                        groups,\n                        tracks\n                    }\n                },\n                mainPlaylistLoader\n            } = settings;\n            for (const groupId in mediaGroups[type]) {\n                if (!groups[groupId]) {\n                    groups[groupId] = [];\n                }\n                for (const variantLabel in mediaGroups[type][groupId]) {\n                    if (!vhs.options_.useForcedSubtitles && mediaGroups[type][groupId][variantLabel].forced) {\n                        // Subtitle playlists with the forced attribute are not selectable in Safari.\n                        // According to Apple's HLS Authoring Specification:\n                        //   If content has forced subtitles and regular subtitles in a given language,\n                        //   the regular subtitles track in that language MUST contain both the forced\n                        //   subtitles and the regular subtitles for that language.\n                        // Because of this requirement and that Safari does not add forced subtitles,\n                        // forced subtitles are skipped here to maintain consistent experience across\n                        // all platforms\n                        continue;\n                    }\n                    let properties = mediaGroups[type][groupId][variantLabel];\n                    let playlistLoader;\n                    if (sourceType === 'hls') {\n                        playlistLoader = new PlaylistLoader(properties.resolvedUri, vhs, requestOptions);\n                    } else if (sourceType === 'dash') {\n                        const playlists = properties.playlists.filter(p => p.excludeUntil !== Infinity);\n                        if (!playlists.length) {\n                            return;\n                        }\n                        playlistLoader = new DashPlaylistLoader(properties.playlists[0], vhs, requestOptions, mainPlaylistLoader);\n                    } else if (sourceType === 'vhs-json') {\n                        playlistLoader = new PlaylistLoader(\n                            // if the vhs-json object included the media playlist, use the media playlist\n                            // as provided, otherwise use the resolved URI to load the playlist\n                            properties.playlists ? properties.playlists[0] : properties.resolvedUri, vhs, requestOptions);\n                    }\n                    properties = merge({\n                        id: variantLabel,\n                        playlistLoader\n                    }, properties);\n                    setupListeners[type](type, properties.playlistLoader, settings);\n                    groups[groupId].push(properties);\n                    if (typeof tracks[variantLabel] === 'undefined') {\n                        const track = tech.addRemoteTextTrack({\n                            id: variantLabel,\n                            kind: 'subtitles',\n                            default: properties.default && properties.autoselect,\n                            language: properties.language,\n                            label: variantLabel\n                        }, false).track;\n                        tracks[variantLabel] = track;\n                    }\n                }\n            } // setup single error event handler for the segment loader\n\n            segmentLoader.on('error', onError[type](type, settings));\n        },\n        /**\n         * Setup TextTracks for the closed-caption groups\n         *\n         * @param {String} type\n         *        MediaGroup type\n         * @param {Object} settings\n         *        Object containing required information for media groups\n         * @function initialize['CLOSED-CAPTIONS']\n         */\n        'CLOSED-CAPTIONS': (type, settings) => {\n            const {\n                tech,\n                main: {\n                    mediaGroups\n                },\n                mediaTypes: {\n                    [type]: {\n                        groups,\n                        tracks\n                    }\n                }\n            } = settings;\n            for (const groupId in mediaGroups[type]) {\n                if (!groups[groupId]) {\n                    groups[groupId] = [];\n                }\n                for (const variantLabel in mediaGroups[type][groupId]) {\n                    const properties = mediaGroups[type][groupId][variantLabel]; // Look for either 608 (CCn) or 708 (SERVICEn) caption services\n\n                    if (!/^(?:CC|SERVICE)/.test(properties.instreamId)) {\n                        continue;\n                    }\n                    const captionServices = tech.options_.vhs && tech.options_.vhs.captionServices || {};\n                    let newProps = {\n                        label: variantLabel,\n                        language: properties.language,\n                        instreamId: properties.instreamId,\n                        default: properties.default && properties.autoselect\n                    };\n                    if (captionServices[newProps.instreamId]) {\n                        newProps = merge(newProps, captionServices[newProps.instreamId]);\n                    }\n                    if (newProps.default === undefined) {\n                        delete newProps.default;\n                    } // No PlaylistLoader is required for Closed-Captions because the captions are\n                    // embedded within the video stream\n\n                    groups[groupId].push(merge({\n                        id: variantLabel\n                    }, properties));\n                    if (typeof tracks[variantLabel] === 'undefined') {\n                        const track = tech.addRemoteTextTrack({\n                            id: newProps.instreamId,\n                            kind: 'captions',\n                            default: newProps.default,\n                            language: newProps.language,\n                            label: newProps.label\n                        }, false).track;\n                        tracks[variantLabel] = track;\n                    }\n                }\n            }\n        }\n    };\n    const groupMatch = (list, media) => {\n        for (let i = 0; i < list.length; i++) {\n            if (playlistMatch(media, list[i])) {\n                return true;\n            }\n            if (list[i].playlists && groupMatch(list[i].playlists, media)) {\n                return true;\n            }\n        }\n        return false;\n    };\n    /**\n     * Returns a function used to get the active group of the provided type\n     *\n     * @param {string} type\n     *        MediaGroup type\n     * @param {Object} settings\n     *        Object containing required information for media groups\n     * @return {Function}\n     *         Function that returns the active media group for the provided type. Takes an\n     *         optional parameter {TextTrack} track. If no track is provided, a list of all\n     *         variants in the group, otherwise the variant corresponding to the provided\n     *         track is returned.\n     * @function activeGroup\n     */\n\n    const activeGroup = (type, settings) => track => {\n        const {\n            mainPlaylistLoader,\n            mediaTypes: {\n                [type]: {\n                    groups\n                }\n            }\n        } = settings;\n        const media = mainPlaylistLoader.media();\n        if (!media) {\n            return null;\n        }\n        let variants = null; // set to variants to main media active group\n\n        if (media.attributes[type]) {\n            variants = groups[media.attributes[type]];\n        }\n        const groupKeys = Object.keys(groups);\n        if (!variants) {\n            // find the mainPlaylistLoader media\n            // that is in a media group if we are dealing\n            // with audio only\n            if (type === 'AUDIO' && groupKeys.length > 1 && isAudioOnly(settings.main)) {\n                for (let i = 0; i < groupKeys.length; i++) {\n                    const groupPropertyList = groups[groupKeys[i]];\n                    if (groupMatch(groupPropertyList, media)) {\n                        variants = groupPropertyList;\n                        break;\n                    }\n                } // use the main group if it exists\n            } else if (groups.main) {\n                variants = groups.main; // only one group, use that one\n            } else if (groupKeys.length === 1) {\n                variants = groups[groupKeys[0]];\n            }\n        }\n        if (typeof track === 'undefined') {\n            return variants;\n        }\n        if (track === null || !variants) {\n            // An active track was specified so a corresponding group is expected. track === null\n            // means no track is currently active so there is no corresponding group\n            return null;\n        }\n        return variants.filter(props => props.id === track.id)[0] || null;\n    };\n    const activeTrack = {\n        /**\n         * Returns a function used to get the active track of type provided\n         *\n         * @param {string} type\n         *        MediaGroup type\n         * @param {Object} settings\n         *        Object containing required information for media groups\n         * @return {Function}\n         *         Function that returns the active media track for the provided type. Returns\n         *         null if no track is active\n         * @function activeTrack.AUDIO\n         */\n        AUDIO: (type, settings) => () => {\n            const {\n                mediaTypes: {\n                    [type]: {\n                        tracks\n                    }\n                }\n            } = settings;\n            for (const id in tracks) {\n                if (tracks[id].enabled) {\n                    return tracks[id];\n                }\n            }\n            return null;\n        },\n        /**\n         * Returns a function used to get the active track of type provided\n         *\n         * @param {string} type\n         *        MediaGroup type\n         * @param {Object} settings\n         *        Object containing required information for media groups\n         * @return {Function}\n         *         Function that returns the active media track for the provided type. Returns\n         *         null if no track is active\n         * @function activeTrack.SUBTITLES\n         */\n        SUBTITLES: (type, settings) => () => {\n            const {\n                mediaTypes: {\n                    [type]: {\n                        tracks\n                    }\n                }\n            } = settings;\n            for (const id in tracks) {\n                if (tracks[id].mode === 'showing' || tracks[id].mode === 'hidden') {\n                    return tracks[id];\n                }\n            }\n            return null;\n        }\n    };\n    const getActiveGroup = (type, {\n        mediaTypes\n    }) => () => {\n        const activeTrack_ = mediaTypes[type].activeTrack();\n        if (!activeTrack_) {\n            return null;\n        }\n        return mediaTypes[type].activeGroup(activeTrack_);\n    };\n    /**\n     * Setup PlaylistLoaders and Tracks for media groups (Audio, Subtitles,\n     * Closed-Captions) specified in the main manifest.\n     *\n     * @param {Object} settings\n     *        Object containing required information for setting up the media groups\n     * @param {Tech} settings.tech\n     *        The tech of the player\n     * @param {Object} settings.requestOptions\n     *        XHR request options used by the segment loaders\n     * @param {PlaylistLoader} settings.mainPlaylistLoader\n     *        PlaylistLoader for the main source\n     * @param {VhsHandler} settings.vhs\n     *        VHS SourceHandler\n     * @param {Object} settings.main\n     *        The parsed main manifest\n     * @param {Object} settings.mediaTypes\n     *        Object to store the loaders, tracks, and utility methods for each media type\n     * @param {Function} settings.excludePlaylist\n     *        Excludes the current rendition and forces a rendition switch.\n     * @function setupMediaGroups\n     */\n\n    const setupMediaGroups = settings => {\n        ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {\n            initialize[type](type, settings);\n        });\n        const {\n            mediaTypes,\n            mainPlaylistLoader,\n            tech,\n            vhs,\n            segmentLoaders: {\n                ['AUDIO']: audioSegmentLoader,\n                main: mainSegmentLoader\n            }\n        } = settings; // setup active group and track getters and change event handlers\n\n        ['AUDIO', 'SUBTITLES'].forEach(type => {\n            mediaTypes[type].activeGroup = activeGroup(type, settings);\n            mediaTypes[type].activeTrack = activeTrack[type](type, settings);\n            mediaTypes[type].onGroupChanged = onGroupChanged(type, settings);\n            mediaTypes[type].onGroupChanging = onGroupChanging(type, settings);\n            mediaTypes[type].onTrackChanged = onTrackChanged(type, settings);\n            mediaTypes[type].getActiveGroup = getActiveGroup(type, settings);\n        }); // DO NOT enable the default subtitle or caption track.\n        // DO enable the default audio track\n\n        const audioGroup = mediaTypes.AUDIO.activeGroup();\n        if (audioGroup) {\n            const groupId = (audioGroup.filter(group => group.default)[0] || audioGroup[0]).id;\n            mediaTypes.AUDIO.tracks[groupId].enabled = true;\n            mediaTypes.AUDIO.onGroupChanged();\n            mediaTypes.AUDIO.onTrackChanged();\n            const activeAudioGroup = mediaTypes.AUDIO.getActiveGroup(); // a similar check for handling setAudio on each loader is run again each time the\n            // track is changed, but needs to be handled here since the track may not be considered\n            // changed on the first call to onTrackChanged\n\n            if (!activeAudioGroup.playlistLoader) {\n                // either audio is muxed with video or the stream is audio only\n                mainSegmentLoader.setAudio(true);\n            } else {\n                // audio is demuxed\n                mainSegmentLoader.setAudio(false);\n                audioSegmentLoader.setAudio(true);\n            }\n        }\n        mainPlaylistLoader.on('mediachange', () => {\n            ['AUDIO', 'SUBTITLES'].forEach(type => mediaTypes[type].onGroupChanged());\n        });\n        mainPlaylistLoader.on('mediachanging', () => {\n            ['AUDIO', 'SUBTITLES'].forEach(type => mediaTypes[type].onGroupChanging());\n        }); // custom audio track change event handler for usage event\n\n        const onAudioTrackChanged = () => {\n            mediaTypes.AUDIO.onTrackChanged();\n            tech.trigger({\n                type: 'usage',\n                name: 'vhs-audio-change'\n            });\n        };\n        tech.audioTracks().addEventListener('change', onAudioTrackChanged);\n        tech.remoteTextTracks().addEventListener('change', mediaTypes.SUBTITLES.onTrackChanged);\n        vhs.on('dispose', () => {\n            tech.audioTracks().removeEventListener('change', onAudioTrackChanged);\n            tech.remoteTextTracks().removeEventListener('change', mediaTypes.SUBTITLES.onTrackChanged);\n        }); // clear existing audio tracks and add the ones we just created\n\n        tech.clearTracks('audio');\n        for (const id in mediaTypes.AUDIO.tracks) {\n            tech.audioTracks().addTrack(mediaTypes.AUDIO.tracks[id]);\n        }\n    };\n    /**\n     * Creates skeleton object used to store the loaders, tracks, and utility methods for each\n     * media type\n     *\n     * @return {Object}\n     *         Object to store the loaders, tracks, and utility methods for each media type\n     * @function createMediaTypes\n     */\n\n    const createMediaTypes = () => {\n        const mediaTypes = {};\n        ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {\n            mediaTypes[type] = {\n                groups: {},\n                tracks: {},\n                activePlaylistLoader: null,\n                activeGroup: noop,\n                activeTrack: noop,\n                getActiveGroup: noop,\n                onGroupChanged: noop,\n                onTrackChanged: noop,\n                lastTrack_: null,\n                logger_: logger(`MediaGroups[${type}]`)\n            };\n        });\n        return mediaTypes;\n    };\n\n    /**\n     * A utility class for setting properties and maintaining the state of the content steering manifest.\n     *\n     * Content Steering manifest format:\n     * VERSION: number (required) currently only version 1 is supported.\n     * TTL: number in seconds (optional) until the next content steering manifest reload.\n     * RELOAD-URI: string (optional) uri to fetch the next content steering manifest.\n     * SERVICE-LOCATION-PRIORITY or PATHWAY-PRIORITY a non empty array of unique string values.\n     * PATHWAY-CLONES: array (optional) (HLS only) pathway clone objects to copy from other playlists.\n     */\n\n    class SteeringManifest {\n        constructor() {\n            this.priority_ = [];\n            this.pathwayClones_ = new Map();\n        }\n        set version(number) {\n            // Only version 1 is currently supported for both DASH and HLS.\n            if (number === 1) {\n                this.version_ = number;\n            }\n        }\n        set ttl(seconds) {\n            // TTL = time-to-live, default = 300 seconds.\n            this.ttl_ = seconds || 300;\n        }\n        set reloadUri(uri) {\n            if (uri) {\n                // reload URI can be relative to the previous reloadUri.\n                this.reloadUri_ = resolveUrl(this.reloadUri_, uri);\n            }\n        }\n        set priority(array) {\n            // priority must be non-empty and unique values.\n            if (array && array.length) {\n                this.priority_ = array;\n            }\n        }\n        set pathwayClones(array) {\n            // pathwayClones must be non-empty.\n            if (array && array.length) {\n                this.pathwayClones_ = new Map(array.map(clone => [clone.ID, clone]));\n            }\n        }\n        get version() {\n            return this.version_;\n        }\n        get ttl() {\n            return this.ttl_;\n        }\n        get reloadUri() {\n            return this.reloadUri_;\n        }\n        get priority() {\n            return this.priority_;\n        }\n        get pathwayClones() {\n            return this.pathwayClones_;\n        }\n    }\n    /**\n     * This class represents a content steering manifest and associated state. See both HLS and DASH specifications.\n     * HLS: https://developer.apple.com/streaming/HLSContentSteeringSpecification.pdf and\n     * https://datatracker.ietf.org/doc/draft-pantos-hls-rfc8216bis/ section 4.4.6.6.\n     * DASH: https://dashif.org/docs/DASH-IF-CTS-00XX-Content-Steering-Community-Review.pdf\n     *\n     * @param {function} xhr for making a network request from the browser.\n     * @param {function} bandwidth for fetching the current bandwidth from the main segment loader.\n     */\n\n    class ContentSteeringController extends videojs.EventTarget {\n        constructor(xhr, bandwidth) {\n            super();\n            this.currentPathway = null;\n            this.defaultPathway = null;\n            this.queryBeforeStart = false;\n            this.availablePathways_ = new Set();\n            this.steeringManifest = new SteeringManifest();\n            this.proxyServerUrl_ = null;\n            this.manifestType_ = null;\n            this.ttlTimeout_ = null;\n            this.request_ = null;\n            this.currentPathwayClones = new Map();\n            this.nextPathwayClones = new Map();\n            this.excludedSteeringManifestURLs = new Set();\n            this.logger_ = logger('Content Steering');\n            this.xhr_ = xhr;\n            this.getBandwidth_ = bandwidth;\n        }\n        /**\n         * Assigns the content steering tag properties to the steering controller\n         *\n         * @param {string} baseUrl the baseURL from the main manifest for resolving the steering manifest url\n         * @param {Object} steeringTag the content steering tag from the main manifest\n         */\n\n        assignTagProperties(baseUrl, steeringTag) {\n            this.manifestType_ = steeringTag.serverUri ? 'HLS' : 'DASH'; // serverUri is HLS serverURL is DASH\n\n            const steeringUri = steeringTag.serverUri || steeringTag.serverURL;\n            if (!steeringUri) {\n                this.logger_(`steering manifest URL is ${steeringUri}, cannot request steering manifest.`);\n                this.trigger('error');\n                return;\n            } // Content steering manifests can be encoded as a data URI. We can decode, parse and return early if that's the case.\n\n            if (steeringUri.startsWith('data:')) {\n                this.decodeDataUriManifest_(steeringUri.substring(steeringUri.indexOf(',') + 1));\n                return;\n            } // reloadUri is the resolution of the main manifest URL and steering URL.\n\n            this.steeringManifest.reloadUri = resolveUrl(baseUrl, steeringUri); // pathwayId is HLS defaultServiceLocation is DASH\n\n            this.defaultPathway = steeringTag.pathwayId || steeringTag.defaultServiceLocation; // currently only DASH supports the following properties on <ContentSteering> tags.\n\n            this.queryBeforeStart = steeringTag.queryBeforeStart;\n            this.proxyServerUrl_ = steeringTag.proxyServerURL; // trigger a steering event if we have a pathway from the content steering tag.\n            // this tells VHS which segment pathway to start with.\n            // If queryBeforeStart is true we need to wait for the steering manifest response.\n\n            if (this.defaultPathway && !this.queryBeforeStart) {\n                this.trigger('content-steering');\n            }\n        }\n        /**\n         * Requests the content steering manifest and parse the response. This should only be called after\n         * assignTagProperties was called with a content steering tag.\n         *\n         * @param {string} initialUri The optional uri to make the request with.\n         *    If set, the request should be made with exactly what is passed in this variable.\n         *    This scenario should only happen once on initalization.\n         */\n\n        requestSteeringManifest(initial) {\n            const reloadUri = this.steeringManifest.reloadUri;\n            if (!reloadUri) {\n                return;\n            } // We currently don't support passing MPD query parameters directly to the content steering URL as this requires\n            // ExtUrlQueryInfo tag support. See the DASH content steering spec section 8.1.\n            // This request URI accounts for manifest URIs that have been excluded.\n\n            const uri = initial ? reloadUri : this.getRequestURI(reloadUri); // If there are no valid manifest URIs, we should stop content steering.\n\n            if (!uri) {\n                this.logger_('No valid content steering manifest URIs. Stopping content steering.');\n                this.trigger('error');\n                this.dispose();\n                return;\n            }\n            this.request_ = this.xhr_({\n                uri\n            }, (error, errorInfo) => {\n                if (error) {\n                    // If the client receives HTTP 410 Gone in response to a manifest request,\n                    // it MUST NOT issue another request for that URI for the remainder of the\n                    // playback session. It MAY continue to use the most-recently obtained set\n                    // of Pathways.\n                    if (errorInfo.status === 410) {\n                        this.logger_(`manifest request 410 ${error}.`);\n                        this.logger_(`There will be no more content steering requests to ${uri} this session.`);\n                        this.excludedSteeringManifestURLs.add(uri);\n                        return;\n                    } // If the client receives HTTP 429 Too Many Requests with a Retry-After\n                    // header in response to a manifest request, it SHOULD wait until the time\n                    // specified by the Retry-After header to reissue the request.\n\n                    if (errorInfo.status === 429) {\n                        const retrySeconds = errorInfo.responseHeaders['retry-after'];\n                        this.logger_(`manifest request 429 ${error}.`);\n                        this.logger_(`content steering will retry in ${retrySeconds} seconds.`);\n                        this.startTTLTimeout_(parseInt(retrySeconds, 10));\n                        return;\n                    } // If the Steering Manifest cannot be loaded and parsed correctly, the\n                    // client SHOULD continue to use the previous values and attempt to reload\n                    // it after waiting for the previously-specified TTL (or 5 minutes if\n                    // none).\n\n                    this.logger_(`manifest failed to load ${error}.`);\n                    this.startTTLTimeout_();\n                    return;\n                }\n                const steeringManifestJson = JSON.parse(this.request_.responseText);\n                this.assignSteeringProperties_(steeringManifestJson);\n                this.startTTLTimeout_();\n            });\n        }\n        /**\n         * Set the proxy server URL and add the steering manifest url as a URI encoded parameter.\n         *\n         * @param {string} steeringUrl the steering manifest url\n         * @return the steering manifest url to a proxy server with all parameters set\n         */\n\n        setProxyServerUrl_(steeringUrl) {\n            const steeringUrlObject = new window.URL(steeringUrl);\n            const proxyServerUrlObject = new window.URL(this.proxyServerUrl_);\n            proxyServerUrlObject.searchParams.set('url', encodeURI(steeringUrlObject.toString()));\n            return this.setSteeringParams_(proxyServerUrlObject.toString());\n        }\n        /**\n         * Decodes and parses the data uri encoded steering manifest\n         *\n         * @param {string} dataUri the data uri to be decoded and parsed.\n         */\n\n        decodeDataUriManifest_(dataUri) {\n            const steeringManifestJson = JSON.parse(window.atob(dataUri));\n            this.assignSteeringProperties_(steeringManifestJson);\n        }\n        /**\n         * Set the HLS or DASH content steering manifest request query parameters. For example:\n         * _HLS_pathway=\"<CURRENT-PATHWAY-ID>\" and _HLS_throughput=<THROUGHPUT>\n         * _DASH_pathway and _DASH_throughput\n         *\n         * @param {string} uri to add content steering server parameters to.\n         * @return a new uri as a string with the added steering query parameters.\n         */\n\n        setSteeringParams_(url) {\n            const urlObject = new window.URL(url);\n            const path = this.getPathway();\n            const networkThroughput = this.getBandwidth_();\n            if (path) {\n                const pathwayKey = `_${this.manifestType_}_pathway`;\n                urlObject.searchParams.set(pathwayKey, path);\n            }\n            if (networkThroughput) {\n                const throughputKey = `_${this.manifestType_}_throughput`;\n                urlObject.searchParams.set(throughputKey, networkThroughput);\n            }\n            return urlObject.toString();\n        }\n        /**\n         * Assigns the current steering manifest properties and to the SteeringManifest object\n         *\n         * @param {Object} steeringJson the raw JSON steering manifest\n         */\n\n        assignSteeringProperties_(steeringJson) {\n            this.steeringManifest.version = steeringJson.VERSION;\n            if (!this.steeringManifest.version) {\n                this.logger_(`manifest version is ${steeringJson.VERSION}, which is not supported.`);\n                this.trigger('error');\n                return;\n            }\n            this.steeringManifest.ttl = steeringJson.TTL;\n            this.steeringManifest.reloadUri = steeringJson['RELOAD-URI']; // HLS = PATHWAY-PRIORITY required. DASH = SERVICE-LOCATION-PRIORITY optional\n\n            this.steeringManifest.priority = steeringJson['PATHWAY-PRIORITY'] || steeringJson['SERVICE-LOCATION-PRIORITY']; // Pathway clones to be created/updated in HLS.\n            // See section 7.2 https://datatracker.ietf.org/doc/draft-pantos-hls-rfc8216bis/\n\n            this.steeringManifest.pathwayClones = steeringJson['PATHWAY-CLONES'];\n            this.nextPathwayClones = this.steeringManifest.pathwayClones; // 1. apply first pathway from the array.\n            // 2. if first pathway doesn't exist in manifest, try next pathway.\n            //    a. if all pathways are exhausted, ignore the steering manifest priority.\n            // 3. if segments fail from an established pathway, try all variants/renditions, then exclude the failed pathway.\n            //    a. exclude a pathway for a minimum of the last TTL duration. Meaning, from the next steering response,\n            //       the excluded pathway will be ignored.\n            //       See excludePathway usage in excludePlaylist().\n            // If there are no available pathways, we need to stop content steering.\n\n            if (!this.availablePathways_.size) {\n                this.logger_('There are no available pathways for content steering. Ending content steering.');\n                this.trigger('error');\n                this.dispose();\n            }\n            const chooseNextPathway = pathwaysByPriority => {\n                for (const path of pathwaysByPriority) {\n                    if (this.availablePathways_.has(path)) {\n                        return path;\n                    }\n                } // If no pathway matches, ignore the manifest and choose the first available.\n\n                return [...this.availablePathways_][0];\n            };\n            const nextPathway = chooseNextPathway(this.steeringManifest.priority);\n            if (this.currentPathway !== nextPathway) {\n                this.currentPathway = nextPathway;\n                this.trigger('content-steering');\n            }\n        }\n        /**\n         * Returns the pathway to use for steering decisions\n         *\n         * @return {string} returns the current pathway or the default\n         */\n\n        getPathway() {\n            return this.currentPathway || this.defaultPathway;\n        }\n        /**\n         * Chooses the manifest request URI based on proxy URIs and server URLs.\n         * Also accounts for exclusion on certain manifest URIs.\n         *\n         * @param {string} reloadUri the base uri before parameters\n         *\n         * @return {string} the final URI for the request to the manifest server.\n         */\n\n        getRequestURI(reloadUri) {\n            if (!reloadUri) {\n                return null;\n            }\n            const isExcluded = uri => this.excludedSteeringManifestURLs.has(uri);\n            if (this.proxyServerUrl_) {\n                const proxyURI = this.setProxyServerUrl_(reloadUri);\n                if (!isExcluded(proxyURI)) {\n                    return proxyURI;\n                }\n            }\n            const steeringURI = this.setSteeringParams_(reloadUri);\n            if (!isExcluded(steeringURI)) {\n                return steeringURI;\n            } // Return nothing if all valid manifest URIs are excluded.\n\n            return null;\n        }\n        /**\n         * Start the timeout for re-requesting the steering manifest at the TTL interval.\n         *\n         * @param {number} ttl time in seconds of the timeout. Defaults to the\n         *        ttl interval in the steering manifest\n         */\n\n        startTTLTimeout_(ttl = this.steeringManifest.ttl) {\n            // 300 (5 minutes) is the default value.\n            const ttlMS = ttl * 1000;\n            this.ttlTimeout_ = window.setTimeout(() => {\n                this.requestSteeringManifest();\n            }, ttlMS);\n        }\n        /**\n         * Clear the TTL timeout if necessary.\n         */\n\n        clearTTLTimeout_() {\n            window.clearTimeout(this.ttlTimeout_);\n            this.ttlTimeout_ = null;\n        }\n        /**\n         * aborts any current steering xhr and sets the current request object to null\n         */\n\n        abort() {\n            if (this.request_) {\n                this.request_.abort();\n            }\n            this.request_ = null;\n        }\n        /**\n         * aborts steering requests clears the ttl timeout and resets all properties.\n         */\n\n        dispose() {\n            this.off('content-steering');\n            this.off('error');\n            this.abort();\n            this.clearTTLTimeout_();\n            this.currentPathway = null;\n            this.defaultPathway = null;\n            this.queryBeforeStart = null;\n            this.proxyServerUrl_ = null;\n            this.manifestType_ = null;\n            this.ttlTimeout_ = null;\n            this.request_ = null;\n            this.excludedSteeringManifestURLs = new Set();\n            this.availablePathways_ = new Set();\n            this.steeringManifest = new SteeringManifest();\n        }\n        /**\n         * adds a pathway to the available pathways set\n         *\n         * @param {string} pathway the pathway string to add\n         */\n\n        addAvailablePathway(pathway) {\n            if (pathway) {\n                this.availablePathways_.add(pathway);\n            }\n        }\n        /**\n         * Clears all pathways from the available pathways set\n         */\n\n        clearAvailablePathways() {\n            this.availablePathways_.clear();\n        }\n        /**\n         * Removes a pathway from the available pathways set.\n         */\n\n        excludePathway(pathway) {\n            return this.availablePathways_.delete(pathway);\n        }\n        /**\n         * Checks the refreshed DASH manifest content steering tag for changes.\n         *\n         * @param {string} baseURL new steering tag on DASH manifest refresh\n         * @param {Object} newTag the new tag to check for changes\n         * @return a true or false whether the new tag has different values\n         */\n\n        didDASHTagChange(baseURL, newTag) {\n            return !newTag && this.steeringManifest.reloadUri || newTag && (resolveUrl(baseURL, newTag.serverURL) !== this.steeringManifest.reloadUri || newTag.defaultServiceLocation !== this.defaultPathway || newTag.queryBeforeStart !== this.queryBeforeStart || newTag.proxyServerURL !== this.proxyServerUrl_);\n        }\n        getAvailablePathways() {\n            return this.availablePathways_;\n        }\n    }\n\n    /**\n     * @file playlist-controller.js\n     */\n    const ABORT_EARLY_EXCLUSION_SECONDS = 10;\n    let Vhs$1; // SegmentLoader stats that need to have each loader's\n    // values summed to calculate the final value\n\n    const loaderStats = ['mediaRequests', 'mediaRequestsAborted', 'mediaRequestsTimedout', 'mediaRequestsErrored', 'mediaTransferDuration', 'mediaBytesTransferred', 'mediaAppends'];\n    const sumLoaderStat = function (stat) {\n        return this.audioSegmentLoader_[stat] + this.mainSegmentLoader_[stat];\n    };\n    const shouldSwitchToMedia = function ({\n                                              currentPlaylist,\n                                              buffered,\n                                              currentTime,\n                                              nextPlaylist,\n                                              bufferLowWaterLine,\n                                              bufferHighWaterLine,\n                                              duration,\n                                              bufferBasedABR,\n                                              log\n                                          }) {\n        // we have no other playlist to switch to\n        if (!nextPlaylist) {\n            videojs.log.warn('We received no playlist to switch to. Please check your stream.');\n            return false;\n        }\n        const sharedLogLine = `allowing switch ${currentPlaylist && currentPlaylist.id || 'null'} -> ${nextPlaylist.id}`;\n        if (!currentPlaylist) {\n            log(`${sharedLogLine} as current playlist is not set`);\n            return true;\n        } // no need to switch if playlist is the same\n\n        if (nextPlaylist.id === currentPlaylist.id) {\n            return false;\n        } // determine if current time is in a buffered range.\n\n        const isBuffered = Boolean(findRange(buffered, currentTime).length); // If the playlist is live, then we want to not take low water line into account.\n        // This is because in LIVE, the player plays 3 segments from the end of the\n        // playlist, and if `BUFFER_LOW_WATER_LINE` is greater than the duration availble\n        // in those segments, a viewer will never experience a rendition upswitch.\n\n        if (!currentPlaylist.endList) {\n            // For LLHLS live streams, don't switch renditions before playback has started, as it almost\n            // doubles the time to first playback.\n            if (!isBuffered && typeof currentPlaylist.partTargetDuration === 'number') {\n                log(`not ${sharedLogLine} as current playlist is live llhls, but currentTime isn't in buffered.`);\n                return false;\n            }\n            log(`${sharedLogLine} as current playlist is live`);\n            return true;\n        }\n        const forwardBuffer = timeAheadOf(buffered, currentTime);\n        const maxBufferLowWaterLine = bufferBasedABR ? Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE : Config.MAX_BUFFER_LOW_WATER_LINE; // For the same reason as LIVE, we ignore the low water line when the VOD\n        // duration is below the max potential low water line\n\n        if (duration < maxBufferLowWaterLine) {\n            log(`${sharedLogLine} as duration < max low water line (${duration} < ${maxBufferLowWaterLine})`);\n            return true;\n        }\n        const nextBandwidth = nextPlaylist.attributes.BANDWIDTH;\n        const currBandwidth = currentPlaylist.attributes.BANDWIDTH; // when switching down, if our buffer is lower than the high water line,\n        // we can switch down\n\n        if (nextBandwidth < currBandwidth && (!bufferBasedABR || forwardBuffer < bufferHighWaterLine)) {\n            let logLine = `${sharedLogLine} as next bandwidth < current bandwidth (${nextBandwidth} < ${currBandwidth})`;\n            if (bufferBasedABR) {\n                logLine += ` and forwardBuffer < bufferHighWaterLine (${forwardBuffer} < ${bufferHighWaterLine})`;\n            }\n            log(logLine);\n            return true;\n        } // and if our buffer is higher than the low water line,\n        // we can switch up\n\n        if ((!bufferBasedABR || nextBandwidth > currBandwidth) && forwardBuffer >= bufferLowWaterLine) {\n            let logLine = `${sharedLogLine} as forwardBuffer >= bufferLowWaterLine (${forwardBuffer} >= ${bufferLowWaterLine})`;\n            if (bufferBasedABR) {\n                logLine += ` and next bandwidth > current bandwidth (${nextBandwidth} > ${currBandwidth})`;\n            }\n            log(logLine);\n            return true;\n        }\n        log(`not ${sharedLogLine} as no switching criteria met`);\n        return false;\n    };\n    /**\n     * the main playlist controller controller all interactons\n     * between playlists and segmentloaders. At this time this mainly\n     * involves a main playlist and a series of audio playlists\n     * if they are available\n     *\n     * @class PlaylistController\n     * @extends videojs.EventTarget\n     */\n\n    class PlaylistController extends videojs.EventTarget {\n        constructor(options) {\n            super();\n            const {\n                src,\n                withCredentials,\n                tech,\n                bandwidth,\n                externVhs,\n                useCueTags,\n                playlistExclusionDuration,\n                enableLowInitialPlaylist,\n                sourceType,\n                cacheEncryptionKeys,\n                bufferBasedABR,\n                leastPixelDiffSelector,\n                captionServices\n            } = options;\n            if (!src) {\n                throw new Error('A non-empty playlist URL or JSON manifest string is required');\n            }\n            let {\n                maxPlaylistRetries\n            } = options;\n            if (maxPlaylistRetries === null || typeof maxPlaylistRetries === 'undefined') {\n                maxPlaylistRetries = Infinity;\n            }\n            Vhs$1 = externVhs;\n            this.bufferBasedABR = Boolean(bufferBasedABR);\n            this.leastPixelDiffSelector = Boolean(leastPixelDiffSelector);\n            this.withCredentials = withCredentials;\n            this.tech_ = tech;\n            this.vhs_ = tech.vhs;\n            this.sourceType_ = sourceType;\n            this.useCueTags_ = useCueTags;\n            this.playlistExclusionDuration = playlistExclusionDuration;\n            this.maxPlaylistRetries = maxPlaylistRetries;\n            this.enableLowInitialPlaylist = enableLowInitialPlaylist;\n            if (this.useCueTags_) {\n                this.cueTagsTrack_ = this.tech_.addTextTrack('metadata', 'ad-cues');\n                this.cueTagsTrack_.inBandMetadataTrackDispatchType = '';\n            }\n            this.requestOptions_ = {\n                withCredentials,\n                maxPlaylistRetries,\n                timeout: null\n            };\n            this.on('error', this.pauseLoading);\n            this.mediaTypes_ = createMediaTypes();\n            this.mediaSource = new window.MediaSource();\n            this.handleDurationChange_ = this.handleDurationChange_.bind(this);\n            this.handleSourceOpen_ = this.handleSourceOpen_.bind(this);\n            this.handleSourceEnded_ = this.handleSourceEnded_.bind(this);\n            this.mediaSource.addEventListener('durationchange', this.handleDurationChange_); // load the media source into the player\n\n            this.mediaSource.addEventListener('sourceopen', this.handleSourceOpen_);\n            this.mediaSource.addEventListener('sourceended', this.handleSourceEnded_); // we don't have to handle sourceclose since dispose will handle termination of\n            // everything, and the MediaSource should not be detached without a proper disposal\n\n            this.seekable_ = createTimeRanges();\n            this.hasPlayed_ = false;\n            this.syncController_ = new SyncController(options);\n            this.segmentMetadataTrack_ = tech.addRemoteTextTrack({\n                kind: 'metadata',\n                label: 'segment-metadata'\n            }, false).track;\n            this.decrypter_ = new Decrypter();\n            this.sourceUpdater_ = new SourceUpdater(this.mediaSource);\n            this.inbandTextTracks_ = {};\n            this.timelineChangeController_ = new TimelineChangeController();\n            this.keyStatusMap_ = new Map();\n            const segmentLoaderSettings = {\n                vhs: this.vhs_,\n                parse708captions: options.parse708captions,\n                useDtsForTimestampOffset: options.useDtsForTimestampOffset,\n                captionServices,\n                mediaSource: this.mediaSource,\n                currentTime: this.tech_.currentTime.bind(this.tech_),\n                seekable: () => this.seekable(),\n                seeking: () => this.tech_.seeking(),\n                duration: () => this.duration(),\n                hasPlayed: () => this.hasPlayed_,\n                goalBufferLength: () => this.goalBufferLength(),\n                bandwidth,\n                syncController: this.syncController_,\n                decrypter: this.decrypter_,\n                sourceType: this.sourceType_,\n                inbandTextTracks: this.inbandTextTracks_,\n                cacheEncryptionKeys,\n                sourceUpdater: this.sourceUpdater_,\n                timelineChangeController: this.timelineChangeController_,\n                exactManifestTimings: options.exactManifestTimings,\n                addMetadataToTextTrack: this.addMetadataToTextTrack.bind(this)\n            }; // The source type check not only determines whether a special DASH playlist loader\n            // should be used, but also covers the case where the provided src is a vhs-json\n            // manifest object (instead of a URL). In the case of vhs-json, the default\n            // PlaylistLoader should be used.\n\n            this.mainPlaylistLoader_ = this.sourceType_ === 'dash' ? new DashPlaylistLoader(src, this.vhs_, merge(this.requestOptions_, {\n                addMetadataToTextTrack: this.addMetadataToTextTrack.bind(this)\n            })) : new PlaylistLoader(src, this.vhs_, merge(this.requestOptions_, {\n                addDateRangesToTextTrack: this.addDateRangesToTextTrack_.bind(this)\n            }));\n            this.setupMainPlaylistLoaderListeners_(); // setup segment loaders\n            // combined audio/video or just video when alternate audio track is selected\n\n            this.mainSegmentLoader_ = new SegmentLoader(merge(segmentLoaderSettings, {\n                segmentMetadataTrack: this.segmentMetadataTrack_,\n                loaderType: 'main'\n            }), options); // alternate audio track\n\n            this.audioSegmentLoader_ = new SegmentLoader(merge(segmentLoaderSettings, {\n                loaderType: 'audio'\n            }), options);\n            this.subtitleSegmentLoader_ = new VTTSegmentLoader(merge(segmentLoaderSettings, {\n                loaderType: 'vtt',\n                featuresNativeTextTracks: this.tech_.featuresNativeTextTracks,\n                loadVttJs: () => new Promise((resolve, reject) => {\n                    function onLoad() {\n                        tech.off('vttjserror', onError);\n                        resolve();\n                    }\n                    function onError() {\n                        tech.off('vttjsloaded', onLoad);\n                        reject();\n                    }\n                    tech.one('vttjsloaded', onLoad);\n                    tech.one('vttjserror', onError); // safe to call multiple times, script will be loaded only once:\n\n                    tech.addWebVttScript_();\n                })\n            }), options);\n            const getBandwidth = () => {\n                return this.mainSegmentLoader_.bandwidth;\n            };\n            this.contentSteeringController_ = new ContentSteeringController(this.vhs_.xhr, getBandwidth);\n            this.setupSegmentLoaderListeners_();\n            if (this.bufferBasedABR) {\n                this.mainPlaylistLoader_.one('loadedplaylist', () => this.startABRTimer_());\n                this.tech_.on('pause', () => this.stopABRTimer_());\n                this.tech_.on('play', () => this.startABRTimer_());\n            } // Create SegmentLoader stat-getters\n            // mediaRequests_\n            // mediaRequestsAborted_\n            // mediaRequestsTimedout_\n            // mediaRequestsErrored_\n            // mediaTransferDuration_\n            // mediaBytesTransferred_\n            // mediaAppends_\n\n            loaderStats.forEach(stat => {\n                this[stat + '_'] = sumLoaderStat.bind(this, stat);\n            });\n            this.logger_ = logger('pc');\n            this.triggeredFmp4Usage = false;\n            if (this.tech_.preload() === 'none') {\n                this.loadOnPlay_ = () => {\n                    this.loadOnPlay_ = null;\n                    this.mainPlaylistLoader_.load();\n                };\n                this.tech_.one('play', this.loadOnPlay_);\n            } else {\n                this.mainPlaylistLoader_.load();\n            }\n            this.timeToLoadedData__ = -1;\n            this.mainAppendsToLoadedData__ = -1;\n            this.audioAppendsToLoadedData__ = -1;\n            const event = this.tech_.preload() === 'none' ? 'play' : 'loadstart'; // start the first frame timer on loadstart or play (for preload none)\n\n            this.tech_.one(event, () => {\n                const timeToLoadedDataStart = Date.now();\n                this.tech_.one('loadeddata', () => {\n                    this.timeToLoadedData__ = Date.now() - timeToLoadedDataStart;\n                    this.mainAppendsToLoadedData__ = this.mainSegmentLoader_.mediaAppends;\n                    this.audioAppendsToLoadedData__ = this.audioSegmentLoader_.mediaAppends;\n                });\n            });\n        }\n        mainAppendsToLoadedData_() {\n            return this.mainAppendsToLoadedData__;\n        }\n        audioAppendsToLoadedData_() {\n            return this.audioAppendsToLoadedData__;\n        }\n        appendsToLoadedData_() {\n            const main = this.mainAppendsToLoadedData_();\n            const audio = this.audioAppendsToLoadedData_();\n            if (main === -1 || audio === -1) {\n                return -1;\n            }\n            return main + audio;\n        }\n        timeToLoadedData_() {\n            return this.timeToLoadedData__;\n        }\n        /**\n         * Run selectPlaylist and switch to the new playlist if we should\n         *\n         * @param {string} [reason=abr] a reason for why the ABR check is made\n         * @private\n         */\n\n        checkABR_(reason = 'abr') {\n            const nextPlaylist = this.selectPlaylist();\n            if (nextPlaylist && this.shouldSwitchToMedia_(nextPlaylist)) {\n                this.switchMedia_(nextPlaylist, reason);\n            }\n        }\n        switchMedia_(playlist, cause, delay) {\n            const oldMedia = this.media();\n            const oldId = oldMedia && (oldMedia.id || oldMedia.uri);\n            const newId = playlist && (playlist.id || playlist.uri);\n            if (oldId && oldId !== newId) {\n                this.logger_(`switch media ${oldId} -> ${newId} from ${cause}`);\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: `vhs-rendition-change-${cause}`\n                });\n            }\n            this.mainPlaylistLoader_.media(playlist, delay);\n        }\n        /**\n         * A function that ensures we switch our playlists inside of `mediaTypes`\n         * to match the current `serviceLocation` provided by the contentSteering controller.\n         * We want to check media types of `AUDIO`, `SUBTITLES`, and `CLOSED-CAPTIONS`.\n         *\n         * This should only be called on a DASH playback scenario while using content steering.\n         * This is necessary due to differences in how media in HLS manifests are generally tied to\n         * a video playlist, where in DASH that is not always the case.\n         */\n\n        switchMediaForDASHContentSteering_() {\n            ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {\n                const mediaType = this.mediaTypes_[type];\n                const activeGroup = mediaType ? mediaType.activeGroup() : null;\n                const pathway = this.contentSteeringController_.getPathway();\n                if (activeGroup && pathway) {\n                    // activeGroup can be an array or a single group\n                    const mediaPlaylists = activeGroup.length ? activeGroup[0].playlists : activeGroup.playlists;\n                    const dashMediaPlaylists = mediaPlaylists.filter(p => p.attributes.serviceLocation === pathway); // Switch the current active playlist to the correct CDN\n\n                    if (dashMediaPlaylists.length) {\n                        this.mediaTypes_[type].activePlaylistLoader.media(dashMediaPlaylists[0]);\n                    }\n                }\n            });\n        }\n        /**\n         * Start a timer that periodically calls checkABR_\n         *\n         * @private\n         */\n\n        startABRTimer_() {\n            this.stopABRTimer_();\n            this.abrTimer_ = window.setInterval(() => this.checkABR_(), 250);\n        }\n        /**\n         * Stop the timer that periodically calls checkABR_\n         *\n         * @private\n         */\n\n        stopABRTimer_() {\n            // if we're scrubbing, we don't need to pause.\n            // This getter will be added to Video.js in version 7.11.\n            if (this.tech_.scrubbing && this.tech_.scrubbing()) {\n                return;\n            }\n            window.clearInterval(this.abrTimer_);\n            this.abrTimer_ = null;\n        }\n        /**\n         * Get a list of playlists for the currently selected audio playlist\n         *\n         * @return {Array} the array of audio playlists\n         */\n\n        getAudioTrackPlaylists_() {\n            const main = this.main();\n            const defaultPlaylists = main && main.playlists || []; // if we don't have any audio groups then we can only\n            // assume that the audio tracks are contained in main\n            // playlist array, use that or an empty array.\n\n            if (!main || !main.mediaGroups || !main.mediaGroups.AUDIO) {\n                return defaultPlaylists;\n            }\n            const AUDIO = main.mediaGroups.AUDIO;\n            const groupKeys = Object.keys(AUDIO);\n            let track; // get the current active track\n\n            if (Object.keys(this.mediaTypes_.AUDIO.groups).length) {\n                track = this.mediaTypes_.AUDIO.activeTrack(); // or get the default track from main if mediaTypes_ isn't setup yet\n            } else {\n                // default group is `main` or just the first group.\n                const defaultGroup = AUDIO.main || groupKeys.length && AUDIO[groupKeys[0]];\n                for (const label in defaultGroup) {\n                    if (defaultGroup[label].default) {\n                        track = {\n                            label\n                        };\n                        break;\n                    }\n                }\n            } // no active track no playlists.\n\n            if (!track) {\n                return defaultPlaylists;\n            }\n            const playlists = []; // get all of the playlists that are possible for the\n            // active track.\n\n            for (const group in AUDIO) {\n                if (AUDIO[group][track.label]) {\n                    const properties = AUDIO[group][track.label];\n                    if (properties.playlists && properties.playlists.length) {\n                        playlists.push.apply(playlists, properties.playlists);\n                    } else if (properties.uri) {\n                        playlists.push(properties);\n                    } else if (main.playlists.length) {\n                        // if an audio group does not have a uri\n                        // see if we have main playlists that use it as a group.\n                        // if we do then add those to the playlists list.\n                        for (let i = 0; i < main.playlists.length; i++) {\n                            const playlist = main.playlists[i];\n                            if (playlist.attributes && playlist.attributes.AUDIO && playlist.attributes.AUDIO === group) {\n                                playlists.push(playlist);\n                            }\n                        }\n                    }\n                }\n            }\n            if (!playlists.length) {\n                return defaultPlaylists;\n            }\n            return playlists;\n        }\n        /**\n         * Register event handlers on the main playlist loader. A helper\n         * function for construction time.\n         *\n         * @private\n         */\n\n        setupMainPlaylistLoaderListeners_() {\n            this.mainPlaylistLoader_.on('loadedmetadata', () => {\n                const media = this.mainPlaylistLoader_.media();\n                const requestTimeout = media.targetDuration * 1.5 * 1000; // If we don't have any more available playlists, we don't want to\n                // timeout the request.\n\n                if (isLowestEnabledRendition(this.mainPlaylistLoader_.main, this.mainPlaylistLoader_.media())) {\n                    this.requestOptions_.timeout = 0;\n                } else {\n                    this.requestOptions_.timeout = requestTimeout;\n                } // if this isn't a live video and preload permits, start\n                // downloading segments\n\n                if (media.endList && this.tech_.preload() !== 'none') {\n                    this.mainSegmentLoader_.playlist(media, this.requestOptions_);\n                    this.mainSegmentLoader_.load();\n                }\n                setupMediaGroups({\n                    sourceType: this.sourceType_,\n                    segmentLoaders: {\n                        AUDIO: this.audioSegmentLoader_,\n                        SUBTITLES: this.subtitleSegmentLoader_,\n                        main: this.mainSegmentLoader_\n                    },\n                    tech: this.tech_,\n                    requestOptions: this.requestOptions_,\n                    mainPlaylistLoader: this.mainPlaylistLoader_,\n                    vhs: this.vhs_,\n                    main: this.main(),\n                    mediaTypes: this.mediaTypes_,\n                    excludePlaylist: this.excludePlaylist.bind(this)\n                });\n                this.triggerPresenceUsage_(this.main(), media);\n                this.setupFirstPlay();\n                if (!this.mediaTypes_.AUDIO.activePlaylistLoader || this.mediaTypes_.AUDIO.activePlaylistLoader.media()) {\n                    this.trigger('selectedinitialmedia');\n                } else {\n                    // We must wait for the active audio playlist loader to\n                    // finish setting up before triggering this event so the\n                    // representations API and EME setup is correct\n                    this.mediaTypes_.AUDIO.activePlaylistLoader.one('loadedmetadata', () => {\n                        this.trigger('selectedinitialmedia');\n                    });\n                }\n            });\n            this.mainPlaylistLoader_.on('loadedplaylist', () => {\n                if (this.loadOnPlay_) {\n                    this.tech_.off('play', this.loadOnPlay_);\n                }\n                let updatedPlaylist = this.mainPlaylistLoader_.media();\n                if (!updatedPlaylist) {\n                    // Add content steering listeners on first load and init.\n                    this.attachContentSteeringListeners_();\n                    this.initContentSteeringController_(); // exclude any variants that are not supported by the browser before selecting\n                    // an initial media as the playlist selectors do not consider browser support\n\n                    this.excludeUnsupportedVariants_();\n                    let selectedMedia;\n                    if (this.enableLowInitialPlaylist) {\n                        selectedMedia = this.selectInitialPlaylist();\n                    }\n                    if (!selectedMedia) {\n                        selectedMedia = this.selectPlaylist();\n                    }\n                    if (!selectedMedia || !this.shouldSwitchToMedia_(selectedMedia)) {\n                        return;\n                    }\n                    this.initialMedia_ = selectedMedia;\n                    this.switchMedia_(this.initialMedia_, 'initial'); // Under the standard case where a source URL is provided, loadedplaylist will\n                    // fire again since the playlist will be requested. In the case of vhs-json\n                    // (where the manifest object is provided as the source), when the media\n                    // playlist's `segments` list is already available, a media playlist won't be\n                    // requested, and loadedplaylist won't fire again, so the playlist handler must be\n                    // called on its own here.\n\n                    const haveJsonSource = this.sourceType_ === 'vhs-json' && this.initialMedia_.segments;\n                    if (!haveJsonSource) {\n                        return;\n                    }\n                    updatedPlaylist = this.initialMedia_;\n                }\n                this.handleUpdatedMediaPlaylist(updatedPlaylist);\n            });\n            this.mainPlaylistLoader_.on('error', () => {\n                const error = this.mainPlaylistLoader_.error;\n                this.excludePlaylist({\n                    playlistToExclude: error.playlist,\n                    error\n                });\n            });\n            this.mainPlaylistLoader_.on('mediachanging', () => {\n                this.mainSegmentLoader_.abort();\n                this.mainSegmentLoader_.pause();\n            });\n            this.mainPlaylistLoader_.on('mediachange', () => {\n                const media = this.mainPlaylistLoader_.media();\n                const requestTimeout = media.targetDuration * 1.5 * 1000; // If we don't have any more available playlists, we don't want to\n                // timeout the request.\n\n                if (isLowestEnabledRendition(this.mainPlaylistLoader_.main, this.mainPlaylistLoader_.media())) {\n                    this.requestOptions_.timeout = 0;\n                } else {\n                    this.requestOptions_.timeout = requestTimeout;\n                }\n                if (this.sourceType_ === 'dash') {\n                    // we don't want to re-request the same hls playlist right after it was changed\n                    this.mainPlaylistLoader_.load();\n                } // TODO: Create a new event on the PlaylistLoader that signals\n                // that the segments have changed in some way and use that to\n                // update the SegmentLoader instead of doing it twice here and\n                // on `loadedplaylist`\n\n                this.mainSegmentLoader_.pause();\n                this.mainSegmentLoader_.playlist(media, this.requestOptions_);\n                if (this.waitingForFastQualityPlaylistReceived_) {\n                    this.runFastQualitySwitch_();\n                } else {\n                    this.mainSegmentLoader_.load();\n                }\n                this.tech_.trigger({\n                    type: 'mediachange',\n                    bubbles: true\n                });\n            });\n            this.mainPlaylistLoader_.on('playlistunchanged', () => {\n                const updatedPlaylist = this.mainPlaylistLoader_.media(); // ignore unchanged playlists that have already been\n                // excluded for not-changing. We likely just have a really slowly updating\n                // playlist.\n\n                if (updatedPlaylist.lastExcludeReason_ === 'playlist-unchanged') {\n                    return;\n                }\n                const playlistOutdated = this.stuckAtPlaylistEnd_(updatedPlaylist);\n                if (playlistOutdated) {\n                    // Playlist has stopped updating and we're stuck at its end. Try to\n                    // exclude it and switch to another playlist in the hope that that\n                    // one is updating (and give the player a chance to re-adjust to the\n                    // safe live point).\n                    this.excludePlaylist({\n                        error: {\n                            message: 'Playlist no longer updating.',\n                            reason: 'playlist-unchanged'\n                        }\n                    }); // useful for monitoring QoS\n\n                    this.tech_.trigger('playliststuck');\n                }\n            });\n            this.mainPlaylistLoader_.on('renditiondisabled', () => {\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-rendition-disabled'\n                });\n            });\n            this.mainPlaylistLoader_.on('renditionenabled', () => {\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-rendition-enabled'\n                });\n            });\n        }\n        /**\n         * Given an updated media playlist (whether it was loaded for the first time, or\n         * refreshed for live playlists), update any relevant properties and state to reflect\n         * changes in the media that should be accounted for (e.g., cues and duration).\n         *\n         * @param {Object} updatedPlaylist the updated media playlist object\n         *\n         * @private\n         */\n\n        handleUpdatedMediaPlaylist(updatedPlaylist) {\n            if (this.useCueTags_) {\n                this.updateAdCues_(updatedPlaylist);\n            } // TODO: Create a new event on the PlaylistLoader that signals\n            // that the segments have changed in some way and use that to\n            // update the SegmentLoader instead of doing it twice here and\n            // on `mediachange`\n\n            this.mainSegmentLoader_.pause();\n            this.mainSegmentLoader_.playlist(updatedPlaylist, this.requestOptions_);\n            if (this.waitingForFastQualityPlaylistReceived_) {\n                this.runFastQualitySwitch_();\n            }\n            this.updateDuration(!updatedPlaylist.endList); // If the player isn't paused, ensure that the segment loader is running,\n            // as it is possible that it was temporarily stopped while waiting for\n            // a playlist (e.g., in case the playlist errored and we re-requested it).\n\n            if (!this.tech_.paused()) {\n                this.mainSegmentLoader_.load();\n                if (this.audioSegmentLoader_) {\n                    this.audioSegmentLoader_.load();\n                }\n            }\n        }\n        /**\n         * A helper function for triggerring presence usage events once per source\n         *\n         * @private\n         */\n\n        triggerPresenceUsage_(main, media) {\n            const mediaGroups = main.mediaGroups || {};\n            let defaultDemuxed = true;\n            const audioGroupKeys = Object.keys(mediaGroups.AUDIO);\n            for (const mediaGroup in mediaGroups.AUDIO) {\n                for (const label in mediaGroups.AUDIO[mediaGroup]) {\n                    const properties = mediaGroups.AUDIO[mediaGroup][label];\n                    if (!properties.uri) {\n                        defaultDemuxed = false;\n                    }\n                }\n            }\n            if (defaultDemuxed) {\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-demuxed'\n                });\n            }\n            if (Object.keys(mediaGroups.SUBTITLES).length) {\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-webvtt'\n                });\n            }\n            if (Vhs$1.Playlist.isAes(media)) {\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-aes'\n                });\n            }\n            if (audioGroupKeys.length && Object.keys(mediaGroups.AUDIO[audioGroupKeys[0]]).length > 1) {\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-alternate-audio'\n                });\n            }\n            if (this.useCueTags_) {\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-playlist-cue-tags'\n                });\n            }\n        }\n        shouldSwitchToMedia_(nextPlaylist) {\n            const currentPlaylist = this.mainPlaylistLoader_.media() || this.mainPlaylistLoader_.pendingMedia_;\n            const currentTime = this.tech_.currentTime();\n            const bufferLowWaterLine = this.bufferLowWaterLine();\n            const bufferHighWaterLine = this.bufferHighWaterLine();\n            const buffered = this.tech_.buffered();\n            return shouldSwitchToMedia({\n                buffered,\n                currentTime,\n                currentPlaylist,\n                nextPlaylist,\n                bufferLowWaterLine,\n                bufferHighWaterLine,\n                duration: this.duration(),\n                bufferBasedABR: this.bufferBasedABR,\n                log: this.logger_\n            });\n        }\n        /**\n         * Register event handlers on the segment loaders. A helper function\n         * for construction time.\n         *\n         * @private\n         */\n\n        setupSegmentLoaderListeners_() {\n            this.mainSegmentLoader_.on('bandwidthupdate', () => {\n                // Whether or not buffer based ABR or another ABR is used, on a bandwidth change it's\n                // useful to check to see if a rendition switch should be made.\n                this.checkABR_('bandwidthupdate');\n                this.tech_.trigger('bandwidthupdate');\n            });\n            this.mainSegmentLoader_.on('timeout', () => {\n                if (this.bufferBasedABR) {\n                    // If a rendition change is needed, then it would've be done on `bandwidthupdate`.\n                    // Here the only consideration is that for buffer based ABR there's no guarantee\n                    // of an immediate switch (since the bandwidth is averaged with a timeout\n                    // bandwidth value of 1), so force a load on the segment loader to keep it going.\n                    this.mainSegmentLoader_.load();\n                }\n            }); // `progress` events are not reliable enough of a bandwidth measure to trigger buffer\n            // based ABR.\n\n            if (!this.bufferBasedABR) {\n                this.mainSegmentLoader_.on('progress', () => {\n                    this.trigger('progress');\n                });\n            }\n            this.mainSegmentLoader_.on('error', () => {\n                const error = this.mainSegmentLoader_.error();\n                this.excludePlaylist({\n                    playlistToExclude: error.playlist,\n                    error\n                });\n            });\n            this.mainSegmentLoader_.on('appenderror', () => {\n                this.error = this.mainSegmentLoader_.error_;\n                this.trigger('error');\n            });\n            this.mainSegmentLoader_.on('syncinfoupdate', () => {\n                this.onSyncInfoUpdate_();\n            });\n            this.mainSegmentLoader_.on('timestampoffset', () => {\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-timestamp-offset'\n                });\n            });\n            this.audioSegmentLoader_.on('syncinfoupdate', () => {\n                this.onSyncInfoUpdate_();\n            });\n            this.audioSegmentLoader_.on('appenderror', () => {\n                this.error = this.audioSegmentLoader_.error_;\n                this.trigger('error');\n            });\n            this.mainSegmentLoader_.on('ended', () => {\n                this.logger_('main segment loader ended');\n                this.onEndOfStream();\n            });\n            this.mainSegmentLoader_.on('earlyabort', event => {\n                // never try to early abort with the new ABR algorithm\n                if (this.bufferBasedABR) {\n                    return;\n                }\n                this.delegateLoaders_('all', ['abort']);\n                this.excludePlaylist({\n                    error: {\n                        message: 'Aborted early because there isn\\'t enough bandwidth to complete ' + 'the request without rebuffering.'\n                    },\n                    playlistExclusionDuration: ABORT_EARLY_EXCLUSION_SECONDS\n                });\n            });\n            const updateCodecs = () => {\n                if (!this.sourceUpdater_.hasCreatedSourceBuffers()) {\n                    return this.tryToCreateSourceBuffers_();\n                }\n                const codecs = this.getCodecsOrExclude_(); // no codecs means that the playlist was excluded\n\n                if (!codecs) {\n                    return;\n                }\n                this.sourceUpdater_.addOrChangeSourceBuffers(codecs);\n            };\n            this.mainSegmentLoader_.on('trackinfo', updateCodecs);\n            this.audioSegmentLoader_.on('trackinfo', updateCodecs);\n            this.mainSegmentLoader_.on('fmp4', () => {\n                if (!this.triggeredFmp4Usage) {\n                    this.tech_.trigger({\n                        type: 'usage',\n                        name: 'vhs-fmp4'\n                    });\n                    this.triggeredFmp4Usage = true;\n                }\n            });\n            this.audioSegmentLoader_.on('fmp4', () => {\n                if (!this.triggeredFmp4Usage) {\n                    this.tech_.trigger({\n                        type: 'usage',\n                        name: 'vhs-fmp4'\n                    });\n                    this.triggeredFmp4Usage = true;\n                }\n            });\n            this.audioSegmentLoader_.on('ended', () => {\n                this.logger_('audioSegmentLoader ended');\n                this.onEndOfStream();\n            });\n        }\n        mediaSecondsLoaded_() {\n            return Math.max(this.audioSegmentLoader_.mediaSecondsLoaded + this.mainSegmentLoader_.mediaSecondsLoaded);\n        }\n        /**\n         * Call load on our SegmentLoaders\n         */\n\n        load() {\n            this.mainSegmentLoader_.load();\n            if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n                this.audioSegmentLoader_.load();\n            }\n            if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {\n                this.subtitleSegmentLoader_.load();\n            }\n        }\n        /**\n         * Re-tune playback quality level for the current player\n         * conditions. This method will perform destructive actions like removing\n         * already buffered content in order to readjust the currently active\n         * playlist quickly. This is good for manual quality changes\n         *\n         * @private\n         */\n\n        fastQualityChange_(media = this.selectPlaylist()) {\n            if (media && media === this.mainPlaylistLoader_.media()) {\n                this.logger_('skipping fastQualityChange because new media is same as old');\n                return;\n            }\n            this.switchMedia_(media, 'fast-quality'); // we would like to avoid race condition when we call fastQuality,\n            // reset everything and start loading segments from prev segments instead of new because new playlist is not received yet\n\n            this.waitingForFastQualityPlaylistReceived_ = true;\n        }\n        runFastQualitySwitch_() {\n            this.waitingForFastQualityPlaylistReceived_ = false; // Delete all buffered data to allow an immediate quality switch, then seek to give\n            // the browser a kick to remove any cached frames from the previous rendtion (.04 seconds\n            // ahead was roughly the minimum that will accomplish this across a variety of content\n            // in IE and Edge, but seeking in place is sufficient on all other browsers)\n            // Edge/IE bug: https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/14600375/\n            // Chrome bug: https://bugs.chromium.org/p/chromium/issues/detail?id=651904\n\n            this.mainSegmentLoader_.pause();\n            this.mainSegmentLoader_.resetEverything(() => {\n                this.tech_.setCurrentTime(this.tech_.currentTime());\n            }); // don't need to reset audio as it is reset when media changes\n        }\n        /**\n         * Begin playback.\n         */\n\n        play() {\n            if (this.setupFirstPlay()) {\n                return;\n            }\n            if (this.tech_.ended()) {\n                this.tech_.setCurrentTime(0);\n            }\n            if (this.hasPlayed_) {\n                this.load();\n            }\n            const seekable = this.tech_.seekable(); // if the viewer has paused and we fell out of the live window,\n            // seek forward to the live point\n\n            if (this.tech_.duration() === Infinity) {\n                if (this.tech_.currentTime() < seekable.start(0)) {\n                    return this.tech_.setCurrentTime(seekable.end(seekable.length - 1));\n                }\n            }\n        }\n        /**\n         * Seek to the latest media position if this is a live video and the\n         * player and video are loaded and initialized.\n         */\n\n        setupFirstPlay() {\n            const media = this.mainPlaylistLoader_.media(); // Check that everything is ready to begin buffering for the first call to play\n            //  If 1) there is no active media\n            //     2) the player is paused\n            //     3) the first play has already been setup\n            // then exit early\n\n            if (!media || this.tech_.paused() || this.hasPlayed_) {\n                return false;\n            } // when the video is a live stream and/or has a start time\n\n            if (!media.endList || media.start) {\n                const seekable = this.seekable();\n                if (!seekable.length) {\n                    // without a seekable range, the player cannot seek to begin buffering at the\n                    // live or start point\n                    return false;\n                }\n                const seekableEnd = seekable.end(0);\n                let startPoint = seekableEnd;\n                if (media.start) {\n                    const offset = media.start.timeOffset;\n                    if (offset < 0) {\n                        startPoint = Math.max(seekableEnd + offset, seekable.start(0));\n                    } else {\n                        startPoint = Math.min(seekableEnd, offset);\n                    }\n                } // trigger firstplay to inform the source handler to ignore the next seek event\n\n                this.trigger('firstplay'); // seek to the live point\n\n                this.tech_.setCurrentTime(startPoint);\n            }\n            this.hasPlayed_ = true; // we can begin loading now that everything is ready\n\n            this.load();\n            return true;\n        }\n        /**\n         * handle the sourceopen event on the MediaSource\n         *\n         * @private\n         */\n\n        handleSourceOpen_() {\n            // Only attempt to create the source buffer if none already exist.\n            // handleSourceOpen is also called when we are \"re-opening\" a source buffer\n            // after `endOfStream` has been called (in response to a seek for instance)\n            this.tryToCreateSourceBuffers_(); // if autoplay is enabled, begin playback. This is duplicative of\n            // code in video.js but is required because play() must be invoked\n            // *after* the media source has opened.\n\n            if (this.tech_.autoplay()) {\n                const playPromise = this.tech_.play(); // Catch/silence error when a pause interrupts a play request\n                // on browsers which return a promise\n\n                if (typeof playPromise !== 'undefined' && typeof playPromise.then === 'function') {\n                    playPromise.then(null, e => {});\n                }\n            }\n            this.trigger('sourceopen');\n        }\n        /**\n         * handle the sourceended event on the MediaSource\n         *\n         * @private\n         */\n\n        handleSourceEnded_() {\n            if (!this.inbandTextTracks_.metadataTrack_) {\n                return;\n            }\n            const cues = this.inbandTextTracks_.metadataTrack_.cues;\n            if (!cues || !cues.length) {\n                return;\n            }\n            const duration = this.duration();\n            cues[cues.length - 1].endTime = isNaN(duration) || Math.abs(duration) === Infinity ? Number.MAX_VALUE : duration;\n        }\n        /**\n         * handle the durationchange event on the MediaSource\n         *\n         * @private\n         */\n\n        handleDurationChange_() {\n            this.tech_.trigger('durationchange');\n        }\n        /**\n         * Calls endOfStream on the media source when all active stream types have called\n         * endOfStream\n         *\n         * @param {string} streamType\n         *        Stream type of the segment loader that called endOfStream\n         * @private\n         */\n\n        onEndOfStream() {\n            let isEndOfStream = this.mainSegmentLoader_.ended_;\n            if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n                const mainMediaInfo = this.mainSegmentLoader_.getCurrentMediaInfo_(); // if the audio playlist loader exists, then alternate audio is active\n\n                if (!mainMediaInfo || mainMediaInfo.hasVideo) {\n                    // if we do not know if the main segment loader contains video yet or if we\n                    // definitively know the main segment loader contains video, then we need to wait\n                    // for both main and audio segment loaders to call endOfStream\n                    isEndOfStream = isEndOfStream && this.audioSegmentLoader_.ended_;\n                } else {\n                    // otherwise just rely on the audio loader\n                    isEndOfStream = this.audioSegmentLoader_.ended_;\n                }\n            }\n            if (!isEndOfStream) {\n                return;\n            }\n            this.stopABRTimer_();\n            this.sourceUpdater_.endOfStream();\n        }\n        /**\n         * Check if a playlist has stopped being updated\n         *\n         * @param {Object} playlist the media playlist object\n         * @return {boolean} whether the playlist has stopped being updated or not\n         */\n\n        stuckAtPlaylistEnd_(playlist) {\n            const seekable = this.seekable();\n            if (!seekable.length) {\n                // playlist doesn't have enough information to determine whether we are stuck\n                return false;\n            }\n            const expired = this.syncController_.getExpiredTime(playlist, this.duration());\n            if (expired === null) {\n                return false;\n            } // does not use the safe live end to calculate playlist end, since we\n            // don't want to say we are stuck while there is still content\n\n            const absolutePlaylistEnd = Vhs$1.Playlist.playlistEnd(playlist, expired);\n            const currentTime = this.tech_.currentTime();\n            const buffered = this.tech_.buffered();\n            if (!buffered.length) {\n                // return true if the playhead reached the absolute end of the playlist\n                return absolutePlaylistEnd - currentTime <= SAFE_TIME_DELTA;\n            }\n            const bufferedEnd = buffered.end(buffered.length - 1); // return true if there is too little buffer left and buffer has reached absolute\n            // end of playlist\n\n            return bufferedEnd - currentTime <= SAFE_TIME_DELTA && absolutePlaylistEnd - bufferedEnd <= SAFE_TIME_DELTA;\n        }\n        /**\n         * Exclude a playlist for a set amount of time, making it unavailable for selection by\n         * the rendition selection algorithm, then force a new playlist (rendition) selection.\n         *\n         * @param {Object=} playlistToExclude\n         *                  the playlist to exclude, defaults to the currently selected playlist\n         * @param {Object=} error\n         *                  an optional error\n         * @param {number=} playlistExclusionDuration\n         *                  an optional number of seconds to exclude the playlist\n         */\n\n        excludePlaylist({\n                            playlistToExclude = this.mainPlaylistLoader_.media(),\n                            error = {},\n                            playlistExclusionDuration\n                        }) {\n            // If the `error` was generated by the playlist loader, it will contain\n            // the playlist we were trying to load (but failed) and that should be\n            // excluded instead of the currently selected playlist which is likely\n            // out-of-date in this scenario\n            playlistToExclude = playlistToExclude || this.mainPlaylistLoader_.media();\n            playlistExclusionDuration = playlistExclusionDuration || error.playlistExclusionDuration || this.playlistExclusionDuration; // If there is no current playlist, then an error occurred while we were\n            // trying to load the main OR while we were disposing of the tech\n\n            if (!playlistToExclude) {\n                this.error = error;\n                if (this.mediaSource.readyState !== 'open') {\n                    this.trigger('error');\n                } else {\n                    this.sourceUpdater_.endOfStream('network');\n                }\n                return;\n            }\n            playlistToExclude.playlistErrors_++;\n            const playlists = this.mainPlaylistLoader_.main.playlists;\n            const enabledPlaylists = playlists.filter(isEnabled);\n            const isFinalRendition = enabledPlaylists.length === 1 && enabledPlaylists[0] === playlistToExclude; // Don't exclude the only playlist unless it was excluded\n            // forever\n\n            if (playlists.length === 1 && playlistExclusionDuration !== Infinity) {\n                videojs.log.warn(`Problem encountered with playlist ${playlistToExclude.id}. ` + 'Trying again since it is the only playlist.');\n                this.tech_.trigger('retryplaylist'); // if this is a final rendition, we should delay\n\n                return this.mainPlaylistLoader_.load(isFinalRendition);\n            }\n            if (isFinalRendition) {\n                // If we're content steering, try other pathways.\n                if (this.main().contentSteering) {\n                    const pathway = this.pathwayAttribute_(playlistToExclude); // Ignore at least 1 steering manifest refresh.\n\n                    const reIncludeDelay = this.contentSteeringController_.steeringManifest.ttl * 1000;\n                    this.contentSteeringController_.excludePathway(pathway);\n                    this.excludeThenChangePathway_();\n                    setTimeout(() => {\n                        this.contentSteeringController_.addAvailablePathway(pathway);\n                    }, reIncludeDelay);\n                    return;\n                } // Since we're on the final non-excluded playlist, and we're about to exclude\n                // it, instead of erring the player or retrying this playlist, clear out the current\n                // exclusion list. This allows other playlists to be attempted in case any have been\n                // fixed.\n\n                let reincluded = false;\n                playlists.forEach(playlist => {\n                    // skip current playlist which is about to be excluded\n                    if (playlist === playlistToExclude) {\n                        return;\n                    }\n                    const excludeUntil = playlist.excludeUntil; // a playlist cannot be reincluded if it wasn't excluded to begin with.\n\n                    if (typeof excludeUntil !== 'undefined' && excludeUntil !== Infinity) {\n                        reincluded = true;\n                        delete playlist.excludeUntil;\n                    }\n                });\n                if (reincluded) {\n                    videojs.log.warn('Removing other playlists from the exclusion list because the last ' + 'rendition is about to be excluded.'); // Technically we are retrying a playlist, in that we are simply retrying a previous\n                    // playlist. This is needed for users relying on the retryplaylist event to catch a\n                    // case where the player might be stuck and looping through \"dead\" playlists.\n\n                    this.tech_.trigger('retryplaylist');\n                }\n            } // Exclude this playlist\n\n            let excludeUntil;\n            if (playlistToExclude.playlistErrors_ > this.maxPlaylistRetries) {\n                excludeUntil = Infinity;\n            } else {\n                excludeUntil = Date.now() + playlistExclusionDuration * 1000;\n            }\n            playlistToExclude.excludeUntil = excludeUntil;\n            if (error.reason) {\n                playlistToExclude.lastExcludeReason_ = error.reason;\n            }\n            this.tech_.trigger('excludeplaylist');\n            this.tech_.trigger({\n                type: 'usage',\n                name: 'vhs-rendition-excluded'\n            }); // TODO: only load a new playlist if we're excluding the current playlist\n            // If this function was called with a playlist that's not the current active playlist\n            // (e.g., media().id !== playlistToExclude.id),\n            // then a new playlist should not be selected and loaded, as there's nothing wrong with the current playlist.\n\n            const nextPlaylist = this.selectPlaylist();\n            if (!nextPlaylist) {\n                this.error = 'Playback cannot continue. No available working or supported playlists.';\n                this.trigger('error');\n                return;\n            }\n            const logFn = error.internal ? this.logger_ : videojs.log.warn;\n            const errorMessage = error.message ? ' ' + error.message : '';\n            logFn(`${error.internal ? 'Internal problem' : 'Problem'} encountered with playlist ${playlistToExclude.id}.` + `${errorMessage} Switching to playlist ${nextPlaylist.id}.`); // if audio group changed reset audio loaders\n\n            if (nextPlaylist.attributes.AUDIO !== playlistToExclude.attributes.AUDIO) {\n                this.delegateLoaders_('audio', ['abort', 'pause']);\n            } // if subtitle group changed reset subtitle loaders\n\n            if (nextPlaylist.attributes.SUBTITLES !== playlistToExclude.attributes.SUBTITLES) {\n                this.delegateLoaders_('subtitle', ['abort', 'pause']);\n            }\n            this.delegateLoaders_('main', ['abort', 'pause']);\n            const delayDuration = nextPlaylist.targetDuration / 2 * 1000 || 5 * 1000;\n            const shouldDelay = typeof nextPlaylist.lastRequest === 'number' && Date.now() - nextPlaylist.lastRequest <= delayDuration; // delay if it's a final rendition or if the last refresh is sooner than half targetDuration\n\n            return this.switchMedia_(nextPlaylist, 'exclude', isFinalRendition || shouldDelay);\n        }\n        /**\n         * Pause all segment/playlist loaders\n         */\n\n        pauseLoading() {\n            this.delegateLoaders_('all', ['abort', 'pause']);\n            this.stopABRTimer_();\n        }\n        /**\n         * Call a set of functions in order on playlist loaders, segment loaders,\n         * or both types of loaders.\n         *\n         * @param {string} filter\n         *        Filter loaders that should call fnNames using a string. Can be:\n         *        * all - run on all loaders\n         *        * audio - run on all audio loaders\n         *        * subtitle - run on all subtitle loaders\n         *        * main - run on the main loaders\n         *\n         * @param {Array|string} fnNames\n         *        A string or array of function names to call.\n         */\n\n        delegateLoaders_(filter, fnNames) {\n            const loaders = [];\n            const dontFilterPlaylist = filter === 'all';\n            if (dontFilterPlaylist || filter === 'main') {\n                loaders.push(this.mainPlaylistLoader_);\n            }\n            const mediaTypes = [];\n            if (dontFilterPlaylist || filter === 'audio') {\n                mediaTypes.push('AUDIO');\n            }\n            if (dontFilterPlaylist || filter === 'subtitle') {\n                mediaTypes.push('CLOSED-CAPTIONS');\n                mediaTypes.push('SUBTITLES');\n            }\n            mediaTypes.forEach(mediaType => {\n                const loader = this.mediaTypes_[mediaType] && this.mediaTypes_[mediaType].activePlaylistLoader;\n                if (loader) {\n                    loaders.push(loader);\n                }\n            });\n            ['main', 'audio', 'subtitle'].forEach(name => {\n                const loader = this[`${name}SegmentLoader_`];\n                if (loader && (filter === name || filter === 'all')) {\n                    loaders.push(loader);\n                }\n            });\n            loaders.forEach(loader => fnNames.forEach(fnName => {\n                if (typeof loader[fnName] === 'function') {\n                    loader[fnName]();\n                }\n            }));\n        }\n        /**\n         * set the current time on all segment loaders\n         *\n         * @param {TimeRange} currentTime the current time to set\n         * @return {TimeRange} the current time\n         */\n\n        setCurrentTime(currentTime) {\n            const buffered = findRange(this.tech_.buffered(), currentTime);\n            if (!(this.mainPlaylistLoader_ && this.mainPlaylistLoader_.media())) {\n                // return immediately if the metadata is not ready yet\n                return 0;\n            } // it's clearly an edge-case but don't thrown an error if asked to\n            // seek within an empty playlist\n\n            if (!this.mainPlaylistLoader_.media().segments) {\n                return 0;\n            } // if the seek location is already buffered, continue buffering as usual\n\n            if (buffered && buffered.length) {\n                return currentTime;\n            } // cancel outstanding requests so we begin buffering at the new\n            // location\n\n            this.mainSegmentLoader_.pause();\n            this.mainSegmentLoader_.resetEverything();\n            if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n                this.audioSegmentLoader_.pause();\n                this.audioSegmentLoader_.resetEverything();\n            }\n            if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {\n                this.subtitleSegmentLoader_.pause();\n                this.subtitleSegmentLoader_.resetEverything();\n            } // start segment loader loading in case they are paused\n\n            this.load();\n        }\n        /**\n         * get the current duration\n         *\n         * @return {TimeRange} the duration\n         */\n\n        duration() {\n            if (!this.mainPlaylistLoader_) {\n                return 0;\n            }\n            const media = this.mainPlaylistLoader_.media();\n            if (!media) {\n                // no playlists loaded yet, so can't determine a duration\n                return 0;\n            } // Don't rely on the media source for duration in the case of a live playlist since\n            // setting the native MediaSource's duration to infinity ends up with consequences to\n            // seekable behavior. See https://github.com/w3c/media-source/issues/5 for details.\n            //\n            // This is resolved in the spec by https://github.com/w3c/media-source/pull/92,\n            // however, few browsers have support for setLiveSeekableRange()\n            // https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/setLiveSeekableRange\n            //\n            // Until a time when the duration of the media source can be set to infinity, and a\n            // seekable range specified across browsers, just return Infinity.\n\n            if (!media.endList) {\n                return Infinity;\n            } // Since this is a VOD video, it is safe to rely on the media source's duration (if\n            // available). If it's not available, fall back to a playlist-calculated estimate.\n\n            if (this.mediaSource) {\n                return this.mediaSource.duration;\n            }\n            return Vhs$1.Playlist.duration(media);\n        }\n        /**\n         * check the seekable range\n         *\n         * @return {TimeRange} the seekable range\n         */\n\n        seekable() {\n            return this.seekable_;\n        }\n        onSyncInfoUpdate_() {\n            let audioSeekable; // TODO check for creation of both source buffers before updating seekable\n            //\n            // A fix was made to this function where a check for\n            // this.sourceUpdater_.hasCreatedSourceBuffers\n            // was added to ensure that both source buffers were created before seekable was\n            // updated. However, it originally had a bug where it was checking for a true and\n            // returning early instead of checking for false. Setting it to check for false to\n            // return early though created other issues. A call to play() would check for seekable\n            // end without verifying that a seekable range was present. In addition, even checking\n            // for that didn't solve some issues, as handleFirstPlay is sometimes worked around\n            // due to a media update calling load on the segment loaders, skipping a seek to live,\n            // thereby starting live streams at the beginning of the stream rather than at the end.\n            //\n            // This conditional should be fixed to wait for the creation of two source buffers at\n            // the same time as the other sections of code are fixed to properly seek to live and\n            // not throw an error due to checking for a seekable end when no seekable range exists.\n            //\n            // For now, fall back to the older behavior, with the understanding that the seekable\n            // range may not be completely correct, leading to a suboptimal initial live point.\n\n            if (!this.mainPlaylistLoader_) {\n                return;\n            }\n            let media = this.mainPlaylistLoader_.media();\n            if (!media) {\n                return;\n            }\n            let expired = this.syncController_.getExpiredTime(media, this.duration());\n            if (expired === null) {\n                // not enough information to update seekable\n                return;\n            }\n            const main = this.mainPlaylistLoader_.main;\n            const mainSeekable = Vhs$1.Playlist.seekable(media, expired, Vhs$1.Playlist.liveEdgeDelay(main, media));\n            if (mainSeekable.length === 0) {\n                return;\n            }\n            if (this.mediaTypes_.AUDIO.activePlaylistLoader) {\n                media = this.mediaTypes_.AUDIO.activePlaylistLoader.media();\n                expired = this.syncController_.getExpiredTime(media, this.duration());\n                if (expired === null) {\n                    return;\n                }\n                audioSeekable = Vhs$1.Playlist.seekable(media, expired, Vhs$1.Playlist.liveEdgeDelay(main, media));\n                if (audioSeekable.length === 0) {\n                    return;\n                }\n            }\n            let oldEnd;\n            let oldStart;\n            if (this.seekable_ && this.seekable_.length) {\n                oldEnd = this.seekable_.end(0);\n                oldStart = this.seekable_.start(0);\n            }\n            if (!audioSeekable) {\n                // seekable has been calculated based on buffering video data so it\n                // can be returned directly\n                this.seekable_ = mainSeekable;\n            } else if (audioSeekable.start(0) > mainSeekable.end(0) || mainSeekable.start(0) > audioSeekable.end(0)) {\n                // seekables are pretty far off, rely on main\n                this.seekable_ = mainSeekable;\n            } else {\n                this.seekable_ = createTimeRanges([[audioSeekable.start(0) > mainSeekable.start(0) ? audioSeekable.start(0) : mainSeekable.start(0), audioSeekable.end(0) < mainSeekable.end(0) ? audioSeekable.end(0) : mainSeekable.end(0)]]);\n            } // seekable is the same as last time\n\n            if (this.seekable_ && this.seekable_.length) {\n                if (this.seekable_.end(0) === oldEnd && this.seekable_.start(0) === oldStart) {\n                    return;\n                }\n            }\n            this.logger_(`seekable updated [${printableRange(this.seekable_)}]`);\n            this.tech_.trigger('seekablechanged');\n        }\n        /**\n         * Update the player duration\n         */\n\n        updateDuration(isLive) {\n            if (this.updateDuration_) {\n                this.mediaSource.removeEventListener('sourceopen', this.updateDuration_);\n                this.updateDuration_ = null;\n            }\n            if (this.mediaSource.readyState !== 'open') {\n                this.updateDuration_ = this.updateDuration.bind(this, isLive);\n                this.mediaSource.addEventListener('sourceopen', this.updateDuration_);\n                return;\n            }\n            if (isLive) {\n                const seekable = this.seekable();\n                if (!seekable.length) {\n                    return;\n                } // Even in the case of a live playlist, the native MediaSource's duration should not\n                // be set to Infinity (even though this would be expected for a live playlist), since\n                // setting the native MediaSource's duration to infinity ends up with consequences to\n                // seekable behavior. See https://github.com/w3c/media-source/issues/5 for details.\n                //\n                // This is resolved in the spec by https://github.com/w3c/media-source/pull/92,\n                // however, few browsers have support for setLiveSeekableRange()\n                // https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/setLiveSeekableRange\n                //\n                // Until a time when the duration of the media source can be set to infinity, and a\n                // seekable range specified across browsers, the duration should be greater than or\n                // equal to the last possible seekable value.\n                // MediaSource duration starts as NaN\n                // It is possible (and probable) that this case will never be reached for many\n                // sources, since the MediaSource reports duration as the highest value without\n                // accounting for timestamp offset. For example, if the timestamp offset is -100 and\n                // we buffered times 0 to 100 with real times of 100 to 200, even though current\n                // time will be between 0 and 100, the native media source may report the duration\n                // as 200. However, since we report duration separate from the media source (as\n                // Infinity), and as long as the native media source duration value is greater than\n                // our reported seekable range, seeks will work as expected. The large number as\n                // duration for live is actually a strategy used by some players to work around the\n                // issue of live seekable ranges cited above.\n\n                if (isNaN(this.mediaSource.duration) || this.mediaSource.duration < seekable.end(seekable.length - 1)) {\n                    this.sourceUpdater_.setDuration(seekable.end(seekable.length - 1));\n                }\n                return;\n            }\n            const buffered = this.tech_.buffered();\n            let duration = Vhs$1.Playlist.duration(this.mainPlaylistLoader_.media());\n            if (buffered.length > 0) {\n                duration = Math.max(duration, buffered.end(buffered.length - 1));\n            }\n            if (this.mediaSource.duration !== duration) {\n                this.sourceUpdater_.setDuration(duration);\n            }\n        }\n        /**\n         * dispose of the PlaylistController and everything\n         * that it controls\n         */\n\n        dispose() {\n            this.trigger('dispose');\n            this.decrypter_.terminate();\n            this.mainPlaylistLoader_.dispose();\n            this.mainSegmentLoader_.dispose();\n            this.contentSteeringController_.dispose();\n            this.keyStatusMap_.clear();\n            if (this.loadOnPlay_) {\n                this.tech_.off('play', this.loadOnPlay_);\n            }\n            ['AUDIO', 'SUBTITLES'].forEach(type => {\n                const groups = this.mediaTypes_[type].groups;\n                for (const id in groups) {\n                    groups[id].forEach(group => {\n                        if (group.playlistLoader) {\n                            group.playlistLoader.dispose();\n                        }\n                    });\n                }\n            });\n            this.audioSegmentLoader_.dispose();\n            this.subtitleSegmentLoader_.dispose();\n            this.sourceUpdater_.dispose();\n            this.timelineChangeController_.dispose();\n            this.stopABRTimer_();\n            if (this.updateDuration_) {\n                this.mediaSource.removeEventListener('sourceopen', this.updateDuration_);\n            }\n            this.mediaSource.removeEventListener('durationchange', this.handleDurationChange_); // load the media source into the player\n\n            this.mediaSource.removeEventListener('sourceopen', this.handleSourceOpen_);\n            this.mediaSource.removeEventListener('sourceended', this.handleSourceEnded_);\n            this.off();\n        }\n        /**\n         * return the main playlist object if we have one\n         *\n         * @return {Object} the main playlist object that we parsed\n         */\n\n        main() {\n            return this.mainPlaylistLoader_.main;\n        }\n        /**\n         * return the currently selected playlist\n         *\n         * @return {Object} the currently selected playlist object that we parsed\n         */\n\n        media() {\n            // playlist loader will not return media if it has not been fully loaded\n            return this.mainPlaylistLoader_.media() || this.initialMedia_;\n        }\n        areMediaTypesKnown_() {\n            const usingAudioLoader = !!this.mediaTypes_.AUDIO.activePlaylistLoader;\n            const hasMainMediaInfo = !!this.mainSegmentLoader_.getCurrentMediaInfo_(); // if we are not using an audio loader, then we have audio media info\n            // otherwise check on the segment loader.\n\n            const hasAudioMediaInfo = !usingAudioLoader ? true : !!this.audioSegmentLoader_.getCurrentMediaInfo_(); // one or both loaders has not loaded sufficently to get codecs\n\n            if (!hasMainMediaInfo || !hasAudioMediaInfo) {\n                return false;\n            }\n            return true;\n        }\n        getCodecsOrExclude_() {\n            const media = {\n                main: this.mainSegmentLoader_.getCurrentMediaInfo_() || {},\n                audio: this.audioSegmentLoader_.getCurrentMediaInfo_() || {}\n            };\n            const playlist = this.mainSegmentLoader_.getPendingSegmentPlaylist() || this.media(); // set \"main\" media equal to video\n\n            media.video = media.main;\n            const playlistCodecs = codecsForPlaylist(this.main(), playlist);\n            const codecs = {};\n            const usingAudioLoader = !!this.mediaTypes_.AUDIO.activePlaylistLoader;\n            if (media.main.hasVideo) {\n                codecs.video = playlistCodecs.video || media.main.videoCodec || DEFAULT_VIDEO_CODEC;\n            }\n            if (media.main.isMuxed) {\n                codecs.video += `,${playlistCodecs.audio || media.main.audioCodec || DEFAULT_AUDIO_CODEC}`;\n            }\n            if (media.main.hasAudio && !media.main.isMuxed || media.audio.hasAudio || usingAudioLoader) {\n                codecs.audio = playlistCodecs.audio || media.main.audioCodec || media.audio.audioCodec || DEFAULT_AUDIO_CODEC; // set audio isFmp4 so we use the correct \"supports\" function below\n\n                media.audio.isFmp4 = media.main.hasAudio && !media.main.isMuxed ? media.main.isFmp4 : media.audio.isFmp4;\n            } // no codecs, no playback.\n\n            if (!codecs.audio && !codecs.video) {\n                this.excludePlaylist({\n                    playlistToExclude: playlist,\n                    error: {\n                        message: 'Could not determine codecs for playlist.'\n                    },\n                    playlistExclusionDuration: Infinity\n                });\n                return;\n            } // fmp4 relies on browser support, while ts relies on muxer support\n\n            const supportFunction = (isFmp4, codec) => isFmp4 ? browserSupportsCodec(codec) : muxerSupportsCodec(codec);\n            const unsupportedCodecs = {};\n            let unsupportedAudio;\n            ['video', 'audio'].forEach(function (type) {\n                if (codecs.hasOwnProperty(type) && !supportFunction(media[type].isFmp4, codecs[type])) {\n                    const supporter = media[type].isFmp4 ? 'browser' : 'muxer';\n                    unsupportedCodecs[supporter] = unsupportedCodecs[supporter] || [];\n                    unsupportedCodecs[supporter].push(codecs[type]);\n                    if (type === 'audio') {\n                        unsupportedAudio = supporter;\n                    }\n                }\n            });\n            if (usingAudioLoader && unsupportedAudio && playlist.attributes.AUDIO) {\n                const audioGroup = playlist.attributes.AUDIO;\n                this.main().playlists.forEach(variant => {\n                    const variantAudioGroup = variant.attributes && variant.attributes.AUDIO;\n                    if (variantAudioGroup === audioGroup && variant !== playlist) {\n                        variant.excludeUntil = Infinity;\n                    }\n                });\n                this.logger_(`excluding audio group ${audioGroup} as ${unsupportedAudio} does not support codec(s): \"${codecs.audio}\"`);\n            } // if we have any unsupported codecs exclude this playlist.\n\n            if (Object.keys(unsupportedCodecs).length) {\n                const message = Object.keys(unsupportedCodecs).reduce((acc, supporter) => {\n                    if (acc) {\n                        acc += ', ';\n                    }\n                    acc += `${supporter} does not support codec(s): \"${unsupportedCodecs[supporter].join(',')}\"`;\n                    return acc;\n                }, '') + '.';\n                this.excludePlaylist({\n                    playlistToExclude: playlist,\n                    error: {\n                        internal: true,\n                        message\n                    },\n                    playlistExclusionDuration: Infinity\n                });\n                return;\n            } // check if codec switching is happening\n\n            if (this.sourceUpdater_.hasCreatedSourceBuffers() && !this.sourceUpdater_.canChangeType()) {\n                const switchMessages = [];\n                ['video', 'audio'].forEach(type => {\n                    const newCodec = (parseCodecs(this.sourceUpdater_.codecs[type] || '')[0] || {}).type;\n                    const oldCodec = (parseCodecs(codecs[type] || '')[0] || {}).type;\n                    if (newCodec && oldCodec && newCodec.toLowerCase() !== oldCodec.toLowerCase()) {\n                        switchMessages.push(`\"${this.sourceUpdater_.codecs[type]}\" -> \"${codecs[type]}\"`);\n                    }\n                });\n                if (switchMessages.length) {\n                    this.excludePlaylist({\n                        playlistToExclude: playlist,\n                        error: {\n                            message: `Codec switching not supported: ${switchMessages.join(', ')}.`,\n                            internal: true\n                        },\n                        playlistExclusionDuration: Infinity\n                    });\n                    return;\n                }\n            } // TODO: when using the muxer shouldn't we just return\n            // the codecs that the muxer outputs?\n\n            return codecs;\n        }\n        /**\n         * Create source buffers and exlude any incompatible renditions.\n         *\n         * @private\n         */\n\n        tryToCreateSourceBuffers_() {\n            // media source is not ready yet or sourceBuffers are already\n            // created.\n            if (this.mediaSource.readyState !== 'open' || this.sourceUpdater_.hasCreatedSourceBuffers()) {\n                return;\n            }\n            if (!this.areMediaTypesKnown_()) {\n                return;\n            }\n            const codecs = this.getCodecsOrExclude_(); // no codecs means that the playlist was excluded\n\n            if (!codecs) {\n                return;\n            }\n            this.sourceUpdater_.createSourceBuffers(codecs);\n            const codecString = [codecs.video, codecs.audio].filter(Boolean).join(',');\n            this.excludeIncompatibleVariants_(codecString);\n        }\n        /**\n         * Excludes playlists with codecs that are unsupported by the muxer and browser.\n         */\n\n        excludeUnsupportedVariants_() {\n            const playlists = this.main().playlists;\n            const ids = []; // TODO: why don't we have a property to loop through all\n            // playlist? Why did we ever mix indexes and keys?\n\n            Object.keys(playlists).forEach(key => {\n                const variant = playlists[key]; // check if we already processed this playlist.\n\n                if (ids.indexOf(variant.id) !== -1) {\n                    return;\n                }\n                ids.push(variant.id);\n                const codecs = codecsForPlaylist(this.main, variant);\n                const unsupported = [];\n                if (codecs.audio && !muxerSupportsCodec(codecs.audio) && !browserSupportsCodec(codecs.audio)) {\n                    unsupported.push(`audio codec ${codecs.audio}`);\n                }\n                if (codecs.video && !muxerSupportsCodec(codecs.video) && !browserSupportsCodec(codecs.video)) {\n                    unsupported.push(`video codec ${codecs.video}`);\n                }\n                if (codecs.text && codecs.text === 'stpp.ttml.im1t') {\n                    unsupported.push(`text codec ${codecs.text}`);\n                }\n                if (unsupported.length) {\n                    variant.excludeUntil = Infinity;\n                    this.logger_(`excluding ${variant.id} for unsupported: ${unsupported.join(', ')}`);\n                }\n            });\n        }\n        /**\n         * Exclude playlists that are known to be codec or\n         * stream-incompatible with the SourceBuffer configuration. For\n         * instance, Media Source Extensions would cause the video element to\n         * stall waiting for video data if you switched from a variant with\n         * video and audio to an audio-only one.\n         *\n         * @param {Object} media a media playlist compatible with the current\n         * set of SourceBuffers. Variants in the current main playlist that\n         * do not appear to have compatible codec or stream configurations\n         * will be excluded from the default playlist selection algorithm\n         * indefinitely.\n         * @private\n         */\n\n        excludeIncompatibleVariants_(codecString) {\n            const ids = [];\n            const playlists = this.main().playlists;\n            const codecs = unwrapCodecList(parseCodecs(codecString));\n            const codecCount_ = codecCount(codecs);\n            const videoDetails = codecs.video && parseCodecs(codecs.video)[0] || null;\n            const audioDetails = codecs.audio && parseCodecs(codecs.audio)[0] || null;\n            Object.keys(playlists).forEach(key => {\n                const variant = playlists[key]; // check if we already processed this playlist.\n                // or it if it is already excluded forever.\n\n                if (ids.indexOf(variant.id) !== -1 || variant.excludeUntil === Infinity) {\n                    return;\n                }\n                ids.push(variant.id);\n                const exclusionReasons = []; // get codecs from the playlist for this variant\n\n                const variantCodecs = codecsForPlaylist(this.mainPlaylistLoader_.main, variant);\n                const variantCodecCount = codecCount(variantCodecs); // if no codecs are listed, we cannot determine that this\n                // variant is incompatible. Wait for mux.js to probe\n\n                if (!variantCodecs.audio && !variantCodecs.video) {\n                    return;\n                } // TODO: we can support this by removing the\n                // old media source and creating a new one, but it will take some work.\n                // The number of streams cannot change\n\n                if (variantCodecCount !== codecCount_) {\n                    exclusionReasons.push(`codec count \"${variantCodecCount}\" !== \"${codecCount_}\"`);\n                } // only exclude playlists by codec change, if codecs cannot switch\n                // during playback.\n\n                if (!this.sourceUpdater_.canChangeType()) {\n                    const variantVideoDetails = variantCodecs.video && parseCodecs(variantCodecs.video)[0] || null;\n                    const variantAudioDetails = variantCodecs.audio && parseCodecs(variantCodecs.audio)[0] || null; // the video codec cannot change\n\n                    if (variantVideoDetails && videoDetails && variantVideoDetails.type.toLowerCase() !== videoDetails.type.toLowerCase()) {\n                        exclusionReasons.push(`video codec \"${variantVideoDetails.type}\" !== \"${videoDetails.type}\"`);\n                    } // the audio codec cannot change\n\n                    if (variantAudioDetails && audioDetails && variantAudioDetails.type.toLowerCase() !== audioDetails.type.toLowerCase()) {\n                        exclusionReasons.push(`audio codec \"${variantAudioDetails.type}\" !== \"${audioDetails.type}\"`);\n                    }\n                }\n                if (exclusionReasons.length) {\n                    variant.excludeUntil = Infinity;\n                    this.logger_(`excluding ${variant.id}: ${exclusionReasons.join(' && ')}`);\n                }\n            });\n        }\n        updateAdCues_(media) {\n            let offset = 0;\n            const seekable = this.seekable();\n            if (seekable.length) {\n                offset = seekable.start(0);\n            }\n            updateAdCues(media, this.cueTagsTrack_, offset);\n        }\n        /**\n         * Calculates the desired forward buffer length based on current time\n         *\n         * @return {number} Desired forward buffer length in seconds\n         */\n\n        goalBufferLength() {\n            const currentTime = this.tech_.currentTime();\n            const initial = Config.GOAL_BUFFER_LENGTH;\n            const rate = Config.GOAL_BUFFER_LENGTH_RATE;\n            const max = Math.max(initial, Config.MAX_GOAL_BUFFER_LENGTH);\n            return Math.min(initial + currentTime * rate, max);\n        }\n        /**\n         * Calculates the desired buffer low water line based on current time\n         *\n         * @return {number} Desired buffer low water line in seconds\n         */\n\n        bufferLowWaterLine() {\n            const currentTime = this.tech_.currentTime();\n            const initial = Config.BUFFER_LOW_WATER_LINE;\n            const rate = Config.BUFFER_LOW_WATER_LINE_RATE;\n            const max = Math.max(initial, Config.MAX_BUFFER_LOW_WATER_LINE);\n            const newMax = Math.max(initial, Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE);\n            return Math.min(initial + currentTime * rate, this.bufferBasedABR ? newMax : max);\n        }\n        bufferHighWaterLine() {\n            return Config.BUFFER_HIGH_WATER_LINE;\n        }\n        addDateRangesToTextTrack_(dateRanges) {\n            createMetadataTrackIfNotExists(this.inbandTextTracks_, 'com.apple.streaming', this.tech_);\n            addDateRangeMetadata({\n                inbandTextTracks: this.inbandTextTracks_,\n                dateRanges\n            });\n        }\n        addMetadataToTextTrack(dispatchType, metadataArray, videoDuration) {\n            const timestampOffset = this.sourceUpdater_.videoBuffer ? this.sourceUpdater_.videoTimestampOffset() : this.sourceUpdater_.audioTimestampOffset(); // There's potentially an issue where we could double add metadata if there's a muxed\n            // audio/video source with a metadata track, and an alt audio with a metadata track.\n            // However, this probably won't happen, and if it does it can be handled then.\n\n            createMetadataTrackIfNotExists(this.inbandTextTracks_, dispatchType, this.tech_);\n            addMetadata({\n                inbandTextTracks: this.inbandTextTracks_,\n                metadataArray,\n                timestampOffset,\n                videoDuration\n            });\n        }\n        /**\n         * Utility for getting the pathway or service location from an HLS or DASH playlist.\n         *\n         * @param {Object} playlist for getting pathway from.\n         * @return the pathway attribute of a playlist\n         */\n\n        pathwayAttribute_(playlist) {\n            return playlist.attributes['PATHWAY-ID'] || playlist.attributes.serviceLocation;\n        }\n        /**\n         * Initialize available pathways and apply the tag properties.\n         */\n\n        initContentSteeringController_() {\n            const main = this.main();\n            if (!main.contentSteering) {\n                return;\n            }\n            for (const playlist of main.playlists) {\n                this.contentSteeringController_.addAvailablePathway(this.pathwayAttribute_(playlist));\n            }\n            this.contentSteeringController_.assignTagProperties(main.uri, main.contentSteering); // request the steering manifest immediately if queryBeforeStart is set.\n\n            if (this.contentSteeringController_.queryBeforeStart) {\n                // When queryBeforeStart is true, initial request should omit steering parameters.\n                this.contentSteeringController_.requestSteeringManifest(true);\n                return;\n            } // otherwise start content steering after playback starts\n\n            this.tech_.one('canplay', () => {\n                this.contentSteeringController_.requestSteeringManifest();\n            });\n        }\n        /**\n         * Reset the content steering controller and re-init.\n         */\n\n        resetContentSteeringController_() {\n            this.contentSteeringController_.clearAvailablePathways();\n            this.contentSteeringController_.dispose();\n            this.initContentSteeringController_();\n        }\n        /**\n         * Attaches the listeners for content steering.\n         */\n\n        attachContentSteeringListeners_() {\n            this.contentSteeringController_.on('content-steering', this.excludeThenChangePathway_.bind(this));\n            if (this.sourceType_ === 'dash') {\n                this.mainPlaylistLoader_.on('loadedplaylist', () => {\n                    const main = this.main(); // check if steering tag or pathways changed.\n\n                    const didDashTagChange = this.contentSteeringController_.didDASHTagChange(main.uri, main.contentSteering);\n                    const didPathwaysChange = () => {\n                        const availablePathways = this.contentSteeringController_.getAvailablePathways();\n                        const newPathways = [];\n                        for (const playlist of main.playlists) {\n                            const serviceLocation = playlist.attributes.serviceLocation;\n                            if (serviceLocation) {\n                                newPathways.push(serviceLocation);\n                                if (!availablePathways.has(serviceLocation)) {\n                                    return true;\n                                }\n                            }\n                        } // If we have no new serviceLocations and previously had availablePathways\n\n                        if (!newPathways.length && availablePathways.size) {\n                            return true;\n                        }\n                        return false;\n                    };\n                    if (didDashTagChange || didPathwaysChange()) {\n                        this.resetContentSteeringController_();\n                    }\n                });\n            }\n        }\n        /**\n         * Simple exclude and change playlist logic for content steering.\n         */\n\n        excludeThenChangePathway_() {\n            const currentPathway = this.contentSteeringController_.getPathway();\n            if (!currentPathway) {\n                return;\n            }\n            this.handlePathwayClones_();\n            const main = this.main();\n            const playlists = main.playlists;\n            const ids = new Set();\n            let didEnablePlaylists = false;\n            Object.keys(playlists).forEach(key => {\n                const variant = playlists[key];\n                const pathwayId = this.pathwayAttribute_(variant);\n                const differentPathwayId = pathwayId && currentPathway !== pathwayId;\n                const steeringExclusion = variant.excludeUntil === Infinity && variant.lastExcludeReason_ === 'content-steering';\n                if (steeringExclusion && !differentPathwayId) {\n                    delete variant.excludeUntil;\n                    delete variant.lastExcludeReason_;\n                    didEnablePlaylists = true;\n                }\n                const noExcludeUntil = !variant.excludeUntil && variant.excludeUntil !== Infinity;\n                const shouldExclude = !ids.has(variant.id) && differentPathwayId && noExcludeUntil;\n                if (!shouldExclude) {\n                    return;\n                }\n                ids.add(variant.id);\n                variant.excludeUntil = Infinity;\n                variant.lastExcludeReason_ = 'content-steering'; // TODO: kind of spammy, maybe move this.\n\n                this.logger_(`excluding ${variant.id} for ${variant.lastExcludeReason_}`);\n            });\n            if (this.contentSteeringController_.manifestType_ === 'DASH') {\n                Object.keys(this.mediaTypes_).forEach(key => {\n                    const type = this.mediaTypes_[key];\n                    if (type.activePlaylistLoader) {\n                        const currentPlaylist = type.activePlaylistLoader.media_; // Check if the current media playlist matches the current CDN\n\n                        if (currentPlaylist && currentPlaylist.attributes.serviceLocation !== currentPathway) {\n                            didEnablePlaylists = true;\n                        }\n                    }\n                });\n            }\n            if (didEnablePlaylists) {\n                this.changeSegmentPathway_();\n            }\n        }\n        /**\n         * Add, update, or delete playlists and media groups for\n         * the pathway clones for HLS Content Steering.\n         *\n         * See https://datatracker.ietf.org/doc/draft-pantos-hls-rfc8216bis/\n         *\n         * NOTE: Pathway cloning does not currently support the `PER_VARIANT_URIS` and\n         * `PER_RENDITION_URIS` as we do not handle `STABLE-VARIANT-ID` or\n         * `STABLE-RENDITION-ID` values.\n         */\n\n        handlePathwayClones_() {\n            const main = this.main();\n            const playlists = main.playlists;\n            const currentPathwayClones = this.contentSteeringController_.currentPathwayClones;\n            const nextPathwayClones = this.contentSteeringController_.nextPathwayClones;\n            const hasClones = currentPathwayClones && currentPathwayClones.size || nextPathwayClones && nextPathwayClones.size;\n            if (!hasClones) {\n                return;\n            }\n            for (const [id, clone] of currentPathwayClones.entries()) {\n                const newClone = nextPathwayClones.get(id); // Delete the old pathway clone.\n\n                if (!newClone) {\n                    this.mainPlaylistLoader_.updateOrDeleteClone(clone);\n                    this.contentSteeringController_.excludePathway(id);\n                }\n            }\n            for (const [id, clone] of nextPathwayClones.entries()) {\n                const oldClone = currentPathwayClones.get(id); // Create a new pathway if it is a new pathway clone object.\n\n                if (!oldClone) {\n                    const playlistsToClone = playlists.filter(p => {\n                        return p.attributes['PATHWAY-ID'] === clone['BASE-ID'];\n                    });\n                    playlistsToClone.forEach(p => {\n                        this.mainPlaylistLoader_.addClonePathway(clone, p);\n                    });\n                    this.contentSteeringController_.addAvailablePathway(id);\n                    continue;\n                } // There have not been changes to the pathway clone object, so skip.\n\n                if (this.equalPathwayClones_(oldClone, clone)) {\n                    continue;\n                } // Update a preexisting cloned pathway.\n                // True is set for the update flag.\n\n                this.mainPlaylistLoader_.updateOrDeleteClone(clone, true);\n                this.contentSteeringController_.addAvailablePathway(id);\n            } // Deep copy contents of next to current pathways.\n\n            this.contentSteeringController_.currentPathwayClones = new Map(JSON.parse(JSON.stringify([...nextPathwayClones])));\n        }\n        /**\n         * Determines whether two pathway clone objects are equivalent.\n         *\n         * @param {Object} a The first pathway clone object.\n         * @param {Object} b The second pathway clone object.\n         * @return {boolean} True if the pathway clone objects are equal, false otherwise.\n         */\n\n        equalPathwayClones_(a, b) {\n            if (a['BASE-ID'] !== b['BASE-ID'] || a.ID !== b.ID || a['URI-REPLACEMENT'].HOST !== b['URI-REPLACEMENT'].HOST) {\n                return false;\n            }\n            const aParams = a['URI-REPLACEMENT'].PARAMS;\n            const bParams = b['URI-REPLACEMENT'].PARAMS; // We need to iterate through both lists of params because one could be\n            // missing a parameter that the other has.\n\n            for (const p in aParams) {\n                if (aParams[p] !== bParams[p]) {\n                    return false;\n                }\n            }\n            for (const p in bParams) {\n                if (aParams[p] !== bParams[p]) {\n                    return false;\n                }\n            }\n            return true;\n        }\n        /**\n         * Changes the current playlists for audio, video and subtitles after a new pathway\n         * is chosen from content steering.\n         */\n\n        changeSegmentPathway_() {\n            const nextPlaylist = this.selectPlaylist();\n            this.pauseLoading(); // Switch audio and text track playlists if necessary in DASH\n\n            if (this.contentSteeringController_.manifestType_ === 'DASH') {\n                this.switchMediaForDASHContentSteering_();\n            }\n            this.switchMedia_(nextPlaylist, 'content-steering');\n        }\n        /**\n         * Iterates through playlists and check their keyId set and compare with the\n         * keyStatusMap, only enable playlists that have a usable key. If the playlist\n         * has no keyId leave it enabled by default.\n         */\n\n        excludeNonUsablePlaylistsByKeyId_() {\n            if (!this.mainPlaylistLoader_ || !this.mainPlaylistLoader_.main) {\n                return;\n            }\n            let nonUsableKeyStatusCount = 0;\n            const NON_USABLE = 'non-usable';\n            this.mainPlaylistLoader_.main.playlists.forEach(playlist => {\n                const keyIdSet = this.mainPlaylistLoader_.getKeyIdSet(playlist); // If the playlist doesn't have keyIDs lets not exclude it.\n\n                if (!keyIdSet || !keyIdSet.size) {\n                    return;\n                }\n                keyIdSet.forEach(key => {\n                    const USABLE = 'usable';\n                    const hasUsableKeyStatus = this.keyStatusMap_.has(key) && this.keyStatusMap_.get(key) === USABLE;\n                    const nonUsableExclusion = playlist.lastExcludeReason_ === NON_USABLE && playlist.excludeUntil === Infinity;\n                    if (!hasUsableKeyStatus) {\n                        // Only exclude playlists that haven't already been excluded as non-usable.\n                        if (playlist.excludeUntil !== Infinity && playlist.lastExcludeReason_ !== NON_USABLE) {\n                            playlist.excludeUntil = Infinity;\n                            playlist.lastExcludeReason_ = NON_USABLE;\n                            this.logger_(`excluding playlist ${playlist.id} because the key ID ${key} doesn't exist in the keyStatusMap or is not ${USABLE}`);\n                        } // count all nonUsableKeyStatus\n\n                        nonUsableKeyStatusCount++;\n                    } else if (hasUsableKeyStatus && nonUsableExclusion) {\n                        delete playlist.excludeUntil;\n                        delete playlist.lastExcludeReason_;\n                        this.logger_(`enabling playlist ${playlist.id} because key ID ${key} is ${USABLE}`);\n                    }\n                });\n            }); // If for whatever reason every playlist has a non usable key status. Lets try re-including the SD renditions as a failsafe.\n\n            if (nonUsableKeyStatusCount >= this.mainPlaylistLoader_.main.playlists.length) {\n                this.mainPlaylistLoader_.main.playlists.forEach(playlist => {\n                    const isNonHD = playlist && playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height < 720;\n                    const excludedForNonUsableKey = playlist.excludeUntil === Infinity && playlist.lastExcludeReason_ === NON_USABLE;\n                    if (isNonHD && excludedForNonUsableKey) {\n                        // Only delete the excludeUntil so we don't try and re-exclude these playlists.\n                        delete playlist.excludeUntil;\n                        videojs.log.warn(`enabling non-HD playlist ${playlist.id} because all playlists were excluded due to ${NON_USABLE} key IDs`);\n                    }\n                });\n            }\n        }\n        /**\n         * Adds a keystatus to the keystatus map, tries to convert to string if necessary.\n         *\n         * @param {any} keyId the keyId to add a status for\n         * @param {string} status the status of the keyId\n         */\n\n        addKeyStatus_(keyId, status) {\n            const isString = typeof keyId === 'string';\n            const keyIdHexString = isString ? keyId : bufferToHexString(keyId);\n            const formattedKeyIdString = keyIdHexString.slice(0, 32).toLowerCase();\n            this.logger_(`KeyStatus '${status}' with key ID ${formattedKeyIdString} added to the keyStatusMap`);\n            this.keyStatusMap_.set(formattedKeyIdString, status);\n        }\n        /**\n         * Utility function for adding key status to the keyStatusMap and filtering usable encrypted playlists.\n         *\n         * @param {any} keyId the keyId from the keystatuschange event\n         * @param {string} status the key status string\n         */\n\n        updatePlaylistByKeyStatus(keyId, status) {\n            this.addKeyStatus_(keyId, status);\n            if (!this.waitingForFastQualityPlaylistReceived_) {\n                this.excludeNonUsableThenChangePlaylist_();\n            } // Listen to loadedplaylist with a single listener and check for new contentProtection elements when a playlist is updated.\n\n            this.mainPlaylistLoader_.off('loadedplaylist', this.excludeNonUsableThenChangePlaylist_.bind(this));\n            this.mainPlaylistLoader_.on('loadedplaylist', this.excludeNonUsableThenChangePlaylist_.bind(this));\n        }\n        excludeNonUsableThenChangePlaylist_() {\n            this.excludeNonUsablePlaylistsByKeyId_();\n            this.fastQualityChange_();\n        }\n    }\n\n    /**\n     * Returns a function that acts as the Enable/disable playlist function.\n     *\n     * @param {PlaylistLoader} loader - The main playlist loader\n     * @param {string} playlistID - id of the playlist\n     * @param {Function} changePlaylistFn - A function to be called after a\n     * playlist's enabled-state has been changed. Will NOT be called if a\n     * playlist's enabled-state is unchanged\n     * @param {boolean=} enable - Value to set the playlist enabled-state to\n     * or if undefined returns the current enabled-state for the playlist\n     * @return {Function} Function for setting/getting enabled\n     */\n\n    const enableFunction = (loader, playlistID, changePlaylistFn) => enable => {\n        const playlist = loader.main.playlists[playlistID];\n        const incompatible = isIncompatible(playlist);\n        const currentlyEnabled = isEnabled(playlist);\n        if (typeof enable === 'undefined') {\n            return currentlyEnabled;\n        }\n        if (enable) {\n            delete playlist.disabled;\n        } else {\n            playlist.disabled = true;\n        }\n        if (enable !== currentlyEnabled && !incompatible) {\n            // Ensure the outside world knows about our changes\n            changePlaylistFn();\n            if (enable) {\n                loader.trigger('renditionenabled');\n            } else {\n                loader.trigger('renditiondisabled');\n            }\n        }\n        return enable;\n    };\n    /**\n     * The representation object encapsulates the publicly visible information\n     * in a media playlist along with a setter/getter-type function (enabled)\n     * for changing the enabled-state of a particular playlist entry\n     *\n     * @class Representation\n     */\n\n    class Representation {\n        constructor(vhsHandler, playlist, id) {\n            const {\n                playlistController_: pc\n            } = vhsHandler;\n            const qualityChangeFunction = pc.fastQualityChange_.bind(pc); // some playlist attributes are optional\n\n            if (playlist.attributes) {\n                const resolution = playlist.attributes.RESOLUTION;\n                this.width = resolution && resolution.width;\n                this.height = resolution && resolution.height;\n                this.bandwidth = playlist.attributes.BANDWIDTH;\n                this.frameRate = playlist.attributes['FRAME-RATE'];\n            }\n            this.codecs = codecsForPlaylist(pc.main(), playlist);\n            this.playlist = playlist; // The id is simply the ordinality of the media playlist\n            // within the main playlist\n\n            this.id = id; // Partially-apply the enableFunction to create a playlist-\n            // specific variant\n\n            this.enabled = enableFunction(vhsHandler.playlists, playlist.id, qualityChangeFunction);\n        }\n    }\n    /**\n     * A mixin function that adds the `representations` api to an instance\n     * of the VhsHandler class\n     *\n     * @param {VhsHandler} vhsHandler - An instance of VhsHandler to add the\n     * representation API into\n     */\n\n    const renditionSelectionMixin = function (vhsHandler) {\n        // Add a single API-specific function to the VhsHandler instance\n        vhsHandler.representations = () => {\n            const main = vhsHandler.playlistController_.main();\n            const playlists = isAudioOnly(main) ? vhsHandler.playlistController_.getAudioTrackPlaylists_() : main.playlists;\n            if (!playlists) {\n                return [];\n            }\n            return playlists.filter(media => !isIncompatible(media)).map((e, i) => new Representation(vhsHandler, e, e.id));\n        };\n    };\n\n    /**\n     * @file playback-watcher.js\n     *\n     * Playback starts, and now my watch begins. It shall not end until my death. I shall\n     * take no wait, hold no uncleared timeouts, father no bad seeks. I shall wear no crowns\n     * and win no glory. I shall live and die at my post. I am the corrector of the underflow.\n     * I am the watcher of gaps. I am the shield that guards the realms of seekable. I pledge\n     * my life and honor to the Playback Watch, for this Player and all the Players to come.\n     */\n\n    const timerCancelEvents = ['seeking', 'seeked', 'pause', 'playing', 'error'];\n    /**\n     * @class PlaybackWatcher\n     */\n\n    class PlaybackWatcher {\n        /**\n         * Represents an PlaybackWatcher object.\n         *\n         * @class\n         * @param {Object} options an object that includes the tech and settings\n         */\n        constructor(options) {\n            this.playlistController_ = options.playlistController;\n            this.tech_ = options.tech;\n            this.seekable = options.seekable;\n            this.allowSeeksWithinUnsafeLiveWindow = options.allowSeeksWithinUnsafeLiveWindow;\n            this.liveRangeSafeTimeDelta = options.liveRangeSafeTimeDelta;\n            this.media = options.media;\n            this.consecutiveUpdates = 0;\n            this.lastRecordedTime = null;\n            this.checkCurrentTimeTimeout_ = null;\n            this.logger_ = logger('PlaybackWatcher');\n            this.logger_('initialize');\n            const playHandler = () => this.monitorCurrentTime_();\n            const canPlayHandler = () => this.monitorCurrentTime_();\n            const waitingHandler = () => this.techWaiting_();\n            const cancelTimerHandler = () => this.resetTimeUpdate_();\n            const pc = this.playlistController_;\n            const loaderTypes = ['main', 'subtitle', 'audio'];\n            const loaderChecks = {};\n            loaderTypes.forEach(type => {\n                loaderChecks[type] = {\n                    reset: () => this.resetSegmentDownloads_(type),\n                    updateend: () => this.checkSegmentDownloads_(type)\n                };\n                pc[`${type}SegmentLoader_`].on('appendsdone', loaderChecks[type].updateend); // If a rendition switch happens during a playback stall where the buffer\n                // isn't changing we want to reset. We cannot assume that the new rendition\n                // will also be stalled, until after new appends.\n\n                pc[`${type}SegmentLoader_`].on('playlistupdate', loaderChecks[type].reset); // Playback stalls should not be detected right after seeking.\n                // This prevents one segment playlists (single vtt or single segment content)\n                // from being detected as stalling. As the buffer will not change in those cases, since\n                // the buffer is the entire video duration.\n\n                this.tech_.on(['seeked', 'seeking'], loaderChecks[type].reset);\n            });\n            /**\n             * We check if a seek was into a gap through the following steps:\n             * 1. We get a seeking event and we do not get a seeked event. This means that\n             *    a seek was attempted but not completed.\n             * 2. We run `fixesBadSeeks_` on segment loader appends. This means that we already\n             *    removed everything from our buffer and appended a segment, and should be ready\n             *    to check for gaps.\n             */\n\n            const setSeekingHandlers = fn => {\n                ['main', 'audio'].forEach(type => {\n                    pc[`${type}SegmentLoader_`][fn]('appended', this.seekingAppendCheck_);\n                });\n            };\n            this.seekingAppendCheck_ = () => {\n                if (this.fixesBadSeeks_()) {\n                    this.consecutiveUpdates = 0;\n                    this.lastRecordedTime = this.tech_.currentTime();\n                    setSeekingHandlers('off');\n                }\n            };\n            this.clearSeekingAppendCheck_ = () => setSeekingHandlers('off');\n            this.watchForBadSeeking_ = () => {\n                this.clearSeekingAppendCheck_();\n                setSeekingHandlers('on');\n            };\n            this.tech_.on('seeked', this.clearSeekingAppendCheck_);\n            this.tech_.on('seeking', this.watchForBadSeeking_);\n            this.tech_.on('waiting', waitingHandler);\n            this.tech_.on(timerCancelEvents, cancelTimerHandler);\n            this.tech_.on('canplay', canPlayHandler);\n            /*\n        An edge case exists that results in gaps not being skipped when they exist at the beginning of a stream. This case\n        is surfaced in one of two ways:\n         1)  The `waiting` event is fired before the player has buffered content, making it impossible\n            to find or skip the gap. The `waiting` event is followed by a `play` event. On first play\n            we can check if playback is stalled due to a gap, and skip the gap if necessary.\n        2)  A source with a gap at the beginning of the stream is loaded programatically while the player\n            is in a playing state. To catch this case, it's important that our one-time play listener is setup\n            even if the player is in a playing state\n      */\n\n            this.tech_.one('play', playHandler); // Define the dispose function to clean up our events\n\n            this.dispose = () => {\n                this.clearSeekingAppendCheck_();\n                this.logger_('dispose');\n                this.tech_.off('waiting', waitingHandler);\n                this.tech_.off(timerCancelEvents, cancelTimerHandler);\n                this.tech_.off('canplay', canPlayHandler);\n                this.tech_.off('play', playHandler);\n                this.tech_.off('seeking', this.watchForBadSeeking_);\n                this.tech_.off('seeked', this.clearSeekingAppendCheck_);\n                loaderTypes.forEach(type => {\n                    pc[`${type}SegmentLoader_`].off('appendsdone', loaderChecks[type].updateend);\n                    pc[`${type}SegmentLoader_`].off('playlistupdate', loaderChecks[type].reset);\n                    this.tech_.off(['seeked', 'seeking'], loaderChecks[type].reset);\n                });\n                if (this.checkCurrentTimeTimeout_) {\n                    window.clearTimeout(this.checkCurrentTimeTimeout_);\n                }\n                this.resetTimeUpdate_();\n            };\n        }\n        /**\n         * Periodically check current time to see if playback stopped\n         *\n         * @private\n         */\n\n        monitorCurrentTime_() {\n            this.checkCurrentTime_();\n            if (this.checkCurrentTimeTimeout_) {\n                window.clearTimeout(this.checkCurrentTimeTimeout_);\n            } // 42 = 24 fps // 250 is what Webkit uses // FF uses 15\n\n            this.checkCurrentTimeTimeout_ = window.setTimeout(this.monitorCurrentTime_.bind(this), 250);\n        }\n        /**\n         * Reset stalled download stats for a specific type of loader\n         *\n         * @param {string} type\n         *        The segment loader type to check.\n         *\n         * @listens SegmentLoader#playlistupdate\n         * @listens Tech#seeking\n         * @listens Tech#seeked\n         */\n\n        resetSegmentDownloads_(type) {\n            const loader = this.playlistController_[`${type}SegmentLoader_`];\n            if (this[`${type}StalledDownloads_`] > 0) {\n                this.logger_(`resetting possible stalled download count for ${type} loader`);\n            }\n            this[`${type}StalledDownloads_`] = 0;\n            this[`${type}Buffered_`] = loader.buffered_();\n        }\n        /**\n         * Checks on every segment `appendsdone` to see\n         * if segment appends are making progress. If they are not\n         * and we are still downloading bytes. We exclude the playlist.\n         *\n         * @param {string} type\n         *        The segment loader type to check.\n         *\n         * @listens SegmentLoader#appendsdone\n         */\n\n        checkSegmentDownloads_(type) {\n            const pc = this.playlistController_;\n            const loader = pc[`${type}SegmentLoader_`];\n            const buffered = loader.buffered_();\n            const isBufferedDifferent = isRangeDifferent(this[`${type}Buffered_`], buffered);\n            this[`${type}Buffered_`] = buffered; // if another watcher is going to fix the issue or\n            // the buffered value for this loader changed\n            // appends are working\n\n            if (isBufferedDifferent) {\n                this.resetSegmentDownloads_(type);\n                return;\n            }\n            this[`${type}StalledDownloads_`]++;\n            this.logger_(`found #${this[`${type}StalledDownloads_`]} ${type} appends that did not increase buffer (possible stalled download)`, {\n                playlistId: loader.playlist_ && loader.playlist_.id,\n                buffered: timeRangesToArray(buffered)\n            }); // after 10 possibly stalled appends with no reset, exclude\n\n            if (this[`${type}StalledDownloads_`] < 10) {\n                return;\n            }\n            this.logger_(`${type} loader stalled download exclusion`);\n            this.resetSegmentDownloads_(type);\n            this.tech_.trigger({\n                type: 'usage',\n                name: `vhs-${type}-download-exclusion`\n            });\n            if (type === 'subtitle') {\n                return;\n            } // TODO: should we exclude audio tracks rather than main tracks\n            // when type is audio?\n\n            pc.excludePlaylist({\n                error: {\n                    message: `Excessive ${type} segment downloading detected.`\n                },\n                playlistExclusionDuration: Infinity\n            });\n        }\n        /**\n         * The purpose of this function is to emulate the \"waiting\" event on\n         * browsers that do not emit it when they are waiting for more\n         * data to continue playback\n         *\n         * @private\n         */\n\n        checkCurrentTime_() {\n            if (this.tech_.paused() || this.tech_.seeking()) {\n                return;\n            }\n            const currentTime = this.tech_.currentTime();\n            const buffered = this.tech_.buffered();\n            if (this.lastRecordedTime === currentTime && (!buffered.length || currentTime + SAFE_TIME_DELTA >= buffered.end(buffered.length - 1))) {\n                // If current time is at the end of the final buffered region, then any playback\n                // stall is most likely caused by buffering in a low bandwidth environment. The tech\n                // should fire a `waiting` event in this scenario, but due to browser and tech\n                // inconsistencies. Calling `techWaiting_` here allows us to simulate\n                // responding to a native `waiting` event when the tech fails to emit one.\n                return this.techWaiting_();\n            }\n            if (this.consecutiveUpdates >= 5 && currentTime === this.lastRecordedTime) {\n                this.consecutiveUpdates++;\n                this.waiting_();\n            } else if (currentTime === this.lastRecordedTime) {\n                this.consecutiveUpdates++;\n            } else {\n                this.consecutiveUpdates = 0;\n                this.lastRecordedTime = currentTime;\n            }\n        }\n        /**\n         * Resets the 'timeupdate' mechanism designed to detect that we are stalled\n         *\n         * @private\n         */\n\n        resetTimeUpdate_() {\n            this.consecutiveUpdates = 0;\n        }\n        /**\n         * Fixes situations where there's a bad seek\n         *\n         * @return {boolean} whether an action was taken to fix the seek\n         * @private\n         */\n\n        fixesBadSeeks_() {\n            const seeking = this.tech_.seeking();\n            if (!seeking) {\n                return false;\n            } // TODO: It's possible that these seekable checks should be moved out of this function\n            // and into a function that runs on seekablechange. It's also possible that we only need\n            // afterSeekableWindow as the buffered check at the bottom is good enough to handle before\n            // seekable range.\n\n            const seekable = this.seekable();\n            const currentTime = this.tech_.currentTime();\n            const isAfterSeekableRange = this.afterSeekableWindow_(seekable, currentTime, this.media(), this.allowSeeksWithinUnsafeLiveWindow);\n            let seekTo;\n            if (isAfterSeekableRange) {\n                const seekableEnd = seekable.end(seekable.length - 1); // sync to live point (if VOD, our seekable was updated and we're simply adjusting)\n\n                seekTo = seekableEnd;\n            }\n            if (this.beforeSeekableWindow_(seekable, currentTime)) {\n                const seekableStart = seekable.start(0); // sync to the beginning of the live window\n                // provide a buffer of .1 seconds to handle rounding/imprecise numbers\n\n                seekTo = seekableStart + (\n                    // if the playlist is too short and the seekable range is an exact time (can\n                    // happen in live with a 3 segment playlist), then don't use a time delta\n                    seekableStart === seekable.end(0) ? 0 : SAFE_TIME_DELTA);\n            }\n            if (typeof seekTo !== 'undefined') {\n                this.logger_(`Trying to seek outside of seekable at time ${currentTime} with ` + `seekable range ${printableRange(seekable)}. Seeking to ` + `${seekTo}.`);\n                this.tech_.setCurrentTime(seekTo);\n                return true;\n            }\n            const sourceUpdater = this.playlistController_.sourceUpdater_;\n            const buffered = this.tech_.buffered();\n            const audioBuffered = sourceUpdater.audioBuffer ? sourceUpdater.audioBuffered() : null;\n            const videoBuffered = sourceUpdater.videoBuffer ? sourceUpdater.videoBuffered() : null;\n            const media = this.media(); // verify that at least two segment durations or one part duration have been\n            // appended before checking for a gap.\n\n            const minAppendedDuration = media.partTargetDuration ? media.partTargetDuration : (media.targetDuration - TIME_FUDGE_FACTOR) * 2; // verify that at least two segment durations have been\n            // appended before checking for a gap.\n\n            const bufferedToCheck = [audioBuffered, videoBuffered];\n            for (let i = 0; i < bufferedToCheck.length; i++) {\n                // skip null buffered\n                if (!bufferedToCheck[i]) {\n                    continue;\n                }\n                const timeAhead = timeAheadOf(bufferedToCheck[i], currentTime); // if we are less than two video/audio segment durations or one part\n                // duration behind we haven't appended enough to call this a bad seek.\n\n                if (timeAhead < minAppendedDuration) {\n                    return false;\n                }\n            }\n            const nextRange = findNextRange(buffered, currentTime); // we have appended enough content, but we don't have anything buffered\n            // to seek over the gap\n\n            if (nextRange.length === 0) {\n                return false;\n            }\n            seekTo = nextRange.start(0) + SAFE_TIME_DELTA;\n            this.logger_(`Buffered region starts (${nextRange.start(0)}) ` + ` just beyond seek point (${currentTime}). Seeking to ${seekTo}.`);\n            this.tech_.setCurrentTime(seekTo);\n            return true;\n        }\n        /**\n         * Handler for situations when we determine the player is waiting.\n         *\n         * @private\n         */\n\n        waiting_() {\n            if (this.techWaiting_()) {\n                return;\n            } // All tech waiting checks failed. Use last resort correction\n\n            const currentTime = this.tech_.currentTime();\n            const buffered = this.tech_.buffered();\n            const currentRange = findRange(buffered, currentTime); // Sometimes the player can stall for unknown reasons within a contiguous buffered\n            // region with no indication that anything is amiss (seen in Firefox). Seeking to\n            // currentTime is usually enough to kickstart the player. This checks that the player\n            // is currently within a buffered region before attempting a corrective seek.\n            // Chrome does not appear to continue `timeupdate` events after a `waiting` event\n            // until there is ~ 3 seconds of forward buffer available. PlaybackWatcher should also\n            // make sure there is ~3 seconds of forward buffer before taking any corrective action\n            // to avoid triggering an `unknownwaiting` event when the network is slow.\n\n            if (currentRange.length && currentTime + 3 <= currentRange.end(0)) {\n                this.resetTimeUpdate_();\n                this.tech_.setCurrentTime(currentTime);\n                this.logger_(`Stopped at ${currentTime} while inside a buffered region ` + `[${currentRange.start(0)} -> ${currentRange.end(0)}]. Attempting to resume ` + 'playback by seeking to the current time.'); // unknown waiting corrections may be useful for monitoring QoS\n\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-unknown-waiting'\n                });\n                return;\n            }\n        }\n        /**\n         * Handler for situations when the tech fires a `waiting` event\n         *\n         * @return {boolean}\n         *         True if an action (or none) was needed to correct the waiting. False if no\n         *         checks passed\n         * @private\n         */\n\n        techWaiting_() {\n            const seekable = this.seekable();\n            const currentTime = this.tech_.currentTime();\n            if (this.tech_.seeking()) {\n                // Tech is seeking or already waiting on another action, no action needed\n                return true;\n            }\n            if (this.beforeSeekableWindow_(seekable, currentTime)) {\n                const livePoint = seekable.end(seekable.length - 1);\n                this.logger_(`Fell out of live window at time ${currentTime}. Seeking to ` + `live point (seekable end) ${livePoint}`);\n                this.resetTimeUpdate_();\n                this.tech_.setCurrentTime(livePoint); // live window resyncs may be useful for monitoring QoS\n\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-live-resync'\n                });\n                return true;\n            }\n            const sourceUpdater = this.tech_.vhs.playlistController_.sourceUpdater_;\n            const buffered = this.tech_.buffered();\n            const videoUnderflow = this.videoUnderflow_({\n                audioBuffered: sourceUpdater.audioBuffered(),\n                videoBuffered: sourceUpdater.videoBuffered(),\n                currentTime\n            });\n            if (videoUnderflow) {\n                // Even though the video underflowed and was stuck in a gap, the audio overplayed\n                // the gap, leading currentTime into a buffered range. Seeking to currentTime\n                // allows the video to catch up to the audio position without losing any audio\n                // (only suffering ~3 seconds of frozen video and a pause in audio playback).\n                this.resetTimeUpdate_();\n                this.tech_.setCurrentTime(currentTime); // video underflow may be useful for monitoring QoS\n\n                this.tech_.trigger({\n                    type: 'usage',\n                    name: 'vhs-video-underflow'\n                });\n                return true;\n            }\n            const nextRange = findNextRange(buffered, currentTime); // check for gap\n\n            if (nextRange.length > 0) {\n                this.logger_(`Stopped at ${currentTime} and seeking to ${nextRange.start(0)}`);\n                this.resetTimeUpdate_();\n                this.skipTheGap_(currentTime);\n                return true;\n            } // All checks failed. Returning false to indicate failure to correct waiting\n\n            return false;\n        }\n        afterSeekableWindow_(seekable, currentTime, playlist, allowSeeksWithinUnsafeLiveWindow = false) {\n            if (!seekable.length) {\n                // we can't make a solid case if there's no seekable, default to false\n                return false;\n            }\n            let allowedEnd = seekable.end(seekable.length - 1) + SAFE_TIME_DELTA;\n            const isLive = !playlist.endList;\n            const isLLHLS = typeof playlist.partTargetDuration === 'number';\n            if (isLive && (isLLHLS || allowSeeksWithinUnsafeLiveWindow)) {\n                allowedEnd = seekable.end(seekable.length - 1) + playlist.targetDuration * 3;\n            }\n            if (currentTime > allowedEnd) {\n                return true;\n            }\n            return false;\n        }\n        beforeSeekableWindow_(seekable, currentTime) {\n            if (seekable.length &&\n                // can't fall before 0 and 0 seekable start identifies VOD stream\n                seekable.start(0) > 0 && currentTime < seekable.start(0) - this.liveRangeSafeTimeDelta) {\n                return true;\n            }\n            return false;\n        }\n        videoUnderflow_({\n                            videoBuffered,\n                            audioBuffered,\n                            currentTime\n                        }) {\n            // audio only content will not have video underflow :)\n            if (!videoBuffered) {\n                return;\n            }\n            let gap; // find a gap in demuxed content.\n\n            if (videoBuffered.length && audioBuffered.length) {\n                // in Chrome audio will continue to play for ~3s when we run out of video\n                // so we have to check that the video buffer did have some buffer in the\n                // past.\n                const lastVideoRange = findRange(videoBuffered, currentTime - 3);\n                const videoRange = findRange(videoBuffered, currentTime);\n                const audioRange = findRange(audioBuffered, currentTime);\n                if (audioRange.length && !videoRange.length && lastVideoRange.length) {\n                    gap = {\n                        start: lastVideoRange.end(0),\n                        end: audioRange.end(0)\n                    };\n                } // find a gap in muxed content.\n            } else {\n                const nextRange = findNextRange(videoBuffered, currentTime); // Even if there is no available next range, there is still a possibility we are\n                // stuck in a gap due to video underflow.\n\n                if (!nextRange.length) {\n                    gap = this.gapFromVideoUnderflow_(videoBuffered, currentTime);\n                }\n            }\n            if (gap) {\n                this.logger_(`Encountered a gap in video from ${gap.start} to ${gap.end}. ` + `Seeking to current time ${currentTime}`);\n                return true;\n            }\n            return false;\n        }\n        /**\n         * Timer callback. If playback still has not proceeded, then we seek\n         * to the start of the next buffered region.\n         *\n         * @private\n         */\n\n        skipTheGap_(scheduledCurrentTime) {\n            const buffered = this.tech_.buffered();\n            const currentTime = this.tech_.currentTime();\n            const nextRange = findNextRange(buffered, currentTime);\n            this.resetTimeUpdate_();\n            if (nextRange.length === 0 || currentTime !== scheduledCurrentTime) {\n                return;\n            }\n            this.logger_('skipTheGap_:', 'currentTime:', currentTime, 'scheduled currentTime:', scheduledCurrentTime, 'nextRange start:', nextRange.start(0)); // only seek if we still have not played\n\n            this.tech_.setCurrentTime(nextRange.start(0) + TIME_FUDGE_FACTOR);\n            this.tech_.trigger({\n                type: 'usage',\n                name: 'vhs-gap-skip'\n            });\n        }\n        gapFromVideoUnderflow_(buffered, currentTime) {\n            // At least in Chrome, if there is a gap in the video buffer, the audio will continue\n            // playing for ~3 seconds after the video gap starts. This is done to account for\n            // video buffer underflow/underrun (note that this is not done when there is audio\n            // buffer underflow/underrun -- in that case the video will stop as soon as it\n            // encounters the gap, as audio stalls are more noticeable/jarring to a user than\n            // video stalls). The player's time will reflect the playthrough of audio, so the\n            // time will appear as if we are in a buffered region, even if we are stuck in a\n            // \"gap.\"\n            //\n            // Example:\n            // video buffer:   0 => 10.1, 10.2 => 20\n            // audio buffer:   0 => 20\n            // overall buffer: 0 => 10.1, 10.2 => 20\n            // current time: 13\n            //\n            // Chrome's video froze at 10 seconds, where the video buffer encountered the gap,\n            // however, the audio continued playing until it reached ~3 seconds past the gap\n            // (13 seconds), at which point it stops as well. Since current time is past the\n            // gap, findNextRange will return no ranges.\n            //\n            // To check for this issue, we see if there is a gap that starts somewhere within\n            // a 3 second range (3 seconds +/- 1 second) back from our current time.\n            const gaps = findGaps(buffered);\n            for (let i = 0; i < gaps.length; i++) {\n                const start = gaps.start(i);\n                const end = gaps.end(i); // gap is starts no more than 4 seconds back\n\n                if (currentTime - start < 4 && currentTime - start > 2) {\n                    return {\n                        start,\n                        end\n                    };\n                }\n            }\n            return null;\n        }\n    }\n    const defaultOptions = {\n        errorInterval: 30,\n        getSource(next) {\n            const tech = this.tech({\n                IWillNotUseThisInPlugins: true\n            });\n            const sourceObj = tech.currentSource_ || this.currentSource();\n            return next(sourceObj);\n        }\n    };\n    /**\n     * Main entry point for the plugin\n     *\n     * @param {Player} player a reference to a videojs Player instance\n     * @param {Object} [options] an object with plugin options\n     * @private\n     */\n\n    const initPlugin = function (player, options) {\n        let lastCalled = 0;\n        let seekTo = 0;\n        const localOptions = merge(defaultOptions, options);\n        player.ready(() => {\n            player.trigger({\n                type: 'usage',\n                name: 'vhs-error-reload-initialized'\n            });\n        });\n        /**\n         * Player modifications to perform that must wait until `loadedmetadata`\n         * has been triggered\n         *\n         * @private\n         */\n\n        const loadedMetadataHandler = function () {\n            if (seekTo) {\n                player.currentTime(seekTo);\n            }\n        };\n        /**\n         * Set the source on the player element, play, and seek if necessary\n         *\n         * @param {Object} sourceObj An object specifying the source url and mime-type to play\n         * @private\n         */\n\n        const setSource = function (sourceObj) {\n            if (sourceObj === null || sourceObj === undefined) {\n                return;\n            }\n            seekTo = player.duration() !== Infinity && player.currentTime() || 0;\n            player.one('loadedmetadata', loadedMetadataHandler);\n            player.src(sourceObj);\n            player.trigger({\n                type: 'usage',\n                name: 'vhs-error-reload'\n            });\n            player.play();\n        };\n        /**\n         * Attempt to get a source from either the built-in getSource function\n         * or a custom function provided via the options\n         *\n         * @private\n         */\n\n        const errorHandler = function () {\n            // Do not attempt to reload the source if a source-reload occurred before\n            // 'errorInterval' time has elapsed since the last source-reload\n            if (Date.now() - lastCalled < localOptions.errorInterval * 1000) {\n                player.trigger({\n                    type: 'usage',\n                    name: 'vhs-error-reload-canceled'\n                });\n                return;\n            }\n            if (!localOptions.getSource || typeof localOptions.getSource !== 'function') {\n                videojs.log.error('ERROR: reloadSourceOnError - The option getSource must be a function!');\n                return;\n            }\n            lastCalled = Date.now();\n            return localOptions.getSource.call(player, setSource);\n        };\n        /**\n         * Unbind any event handlers that were bound by the plugin\n         *\n         * @private\n         */\n\n        const cleanupEvents = function () {\n            player.off('loadedmetadata', loadedMetadataHandler);\n            player.off('error', errorHandler);\n            player.off('dispose', cleanupEvents);\n        };\n        /**\n         * Cleanup before re-initializing the plugin\n         *\n         * @param {Object} [newOptions] an object with plugin options\n         * @private\n         */\n\n        const reinitPlugin = function (newOptions) {\n            cleanupEvents();\n            initPlugin(player, newOptions);\n        };\n        player.on('error', errorHandler);\n        player.on('dispose', cleanupEvents); // Overwrite the plugin function so that we can correctly cleanup before\n        // initializing the plugin\n\n        player.reloadSourceOnError = reinitPlugin;\n    };\n    /**\n     * Reload the source when an error is detected as long as there\n     * wasn't an error previously within the last 30 seconds\n     *\n     * @param {Object} [options] an object with plugin options\n     */\n\n    const reloadSourceOnError = function (options) {\n        initPlugin(this, options);\n    };\n    var version$4 = \"3.10.0\";\n    var version$3 = \"7.0.2\";\n    var version$2 = \"1.3.0\";\n    var version$1 = \"7.1.0\";\n    var version = \"4.0.1\";\n\n    /**\n     * @file videojs-http-streaming.js\n     *\n     * The main file for the VHS project.\n     * License: https://github.com/videojs/videojs-http-streaming/blob/main/LICENSE\n     */\n    const Vhs = {\n        PlaylistLoader,\n        Playlist,\n        utils,\n        STANDARD_PLAYLIST_SELECTOR: lastBandwidthSelector,\n        INITIAL_PLAYLIST_SELECTOR: lowestBitrateCompatibleVariantSelector,\n        lastBandwidthSelector,\n        movingAverageBandwidthSelector,\n        comparePlaylistBandwidth,\n        comparePlaylistResolution,\n        xhr: xhrFactory()\n    }; // Define getter/setters for config properties\n\n    Object.keys(Config).forEach(prop => {\n        Object.defineProperty(Vhs, prop, {\n            get() {\n                videojs.log.warn(`using Vhs.${prop} is UNSAFE be sure you know what you are doing`);\n                return Config[prop];\n            },\n            set(value) {\n                videojs.log.warn(`using Vhs.${prop} is UNSAFE be sure you know what you are doing`);\n                if (typeof value !== 'number' || value < 0) {\n                    videojs.log.warn(`value of Vhs.${prop} must be greater than or equal to 0`);\n                    return;\n                }\n                Config[prop] = value;\n            }\n        });\n    });\n    const LOCAL_STORAGE_KEY = 'videojs-vhs';\n    /**\n     * Updates the selectedIndex of the QualityLevelList when a mediachange happens in vhs.\n     *\n     * @param {QualityLevelList} qualityLevels The QualityLevelList to update.\n     * @param {PlaylistLoader} playlistLoader PlaylistLoader containing the new media info.\n     * @function handleVhsMediaChange\n     */\n\n    const handleVhsMediaChange = function (qualityLevels, playlistLoader) {\n        const newPlaylist = playlistLoader.media();\n        let selectedIndex = -1;\n        for (let i = 0; i < qualityLevels.length; i++) {\n            if (qualityLevels[i].id === newPlaylist.id) {\n                selectedIndex = i;\n                break;\n            }\n        }\n        qualityLevels.selectedIndex_ = selectedIndex;\n        qualityLevels.trigger({\n            selectedIndex,\n            type: 'change'\n        });\n    };\n    /**\n     * Adds quality levels to list once playlist metadata is available\n     *\n     * @param {QualityLevelList} qualityLevels The QualityLevelList to attach events to.\n     * @param {Object} vhs Vhs object to listen to for media events.\n     * @function handleVhsLoadedMetadata\n     */\n\n    const handleVhsLoadedMetadata = function (qualityLevels, vhs) {\n        vhs.representations().forEach(rep => {\n            qualityLevels.addQualityLevel(rep);\n        });\n        handleVhsMediaChange(qualityLevels, vhs.playlists);\n    }; // VHS is a source handler, not a tech. Make sure attempts to use it\n    // as one do not cause exceptions.\n\n    Vhs.canPlaySource = function () {\n        return videojs.log.warn('VHS is no longer a tech. Please remove it from ' + 'your player\\'s techOrder.');\n    };\n    const emeKeySystems = (keySystemOptions, mainPlaylist, audioPlaylist) => {\n        if (!keySystemOptions) {\n            return keySystemOptions;\n        }\n        let codecs = {};\n        if (mainPlaylist && mainPlaylist.attributes && mainPlaylist.attributes.CODECS) {\n            codecs = unwrapCodecList(parseCodecs(mainPlaylist.attributes.CODECS));\n        }\n        if (audioPlaylist && audioPlaylist.attributes && audioPlaylist.attributes.CODECS) {\n            codecs.audio = audioPlaylist.attributes.CODECS;\n        }\n        const videoContentType = getMimeForCodec(codecs.video);\n        const audioContentType = getMimeForCodec(codecs.audio); // upsert the content types based on the selected playlist\n\n        const keySystemContentTypes = {};\n        for (const keySystem in keySystemOptions) {\n            keySystemContentTypes[keySystem] = {};\n            if (audioContentType) {\n                keySystemContentTypes[keySystem].audioContentType = audioContentType;\n            }\n            if (videoContentType) {\n                keySystemContentTypes[keySystem].videoContentType = videoContentType;\n            } // Default to using the video playlist's PSSH even though they may be different, as\n            // videojs-contrib-eme will only accept one in the options.\n            //\n            // This shouldn't be an issue for most cases as early intialization will handle all\n            // unique PSSH values, and if they aren't, then encrypted events should have the\n            // specific information needed for the unique license.\n\n            if (mainPlaylist.contentProtection && mainPlaylist.contentProtection[keySystem] && mainPlaylist.contentProtection[keySystem].pssh) {\n                keySystemContentTypes[keySystem].pssh = mainPlaylist.contentProtection[keySystem].pssh;\n            } // videojs-contrib-eme accepts the option of specifying: 'com.some.cdm': 'url'\n            // so we need to prevent overwriting the URL entirely\n\n            if (typeof keySystemOptions[keySystem] === 'string') {\n                keySystemContentTypes[keySystem].url = keySystemOptions[keySystem];\n            }\n        }\n        return merge(keySystemOptions, keySystemContentTypes);\n    };\n    /**\n     * @typedef {Object} KeySystems\n     *\n     * keySystems configuration for https://github.com/videojs/videojs-contrib-eme\n     * Note: not all options are listed here.\n     *\n     * @property {Uint8Array} [pssh]\n     *           Protection System Specific Header\n     */\n\n    /**\n     * Goes through all the playlists and collects an array of KeySystems options objects\n     * containing each playlist's keySystems and their pssh values, if available.\n     *\n     * @param {Object[]} playlists\n     *        The playlists to look through\n     * @param {string[]} keySystems\n     *        The keySystems to collect pssh values for\n     *\n     * @return {KeySystems[]}\n     *         An array of KeySystems objects containing available key systems and their\n     *         pssh values\n     */\n\n    const getAllPsshKeySystemsOptions = (playlists, keySystems) => {\n        return playlists.reduce((keySystemsArr, playlist) => {\n            if (!playlist.contentProtection) {\n                return keySystemsArr;\n            }\n            const keySystemsOptions = keySystems.reduce((keySystemsObj, keySystem) => {\n                const keySystemOptions = playlist.contentProtection[keySystem];\n                if (keySystemOptions && keySystemOptions.pssh) {\n                    keySystemsObj[keySystem] = {\n                        pssh: keySystemOptions.pssh\n                    };\n                }\n                return keySystemsObj;\n            }, {});\n            if (Object.keys(keySystemsOptions).length) {\n                keySystemsArr.push(keySystemsOptions);\n            }\n            return keySystemsArr;\n        }, []);\n    };\n    /**\n     * Returns a promise that waits for the\n     * [eme plugin](https://github.com/videojs/videojs-contrib-eme) to create a key session.\n     *\n     * Works around https://bugs.chromium.org/p/chromium/issues/detail?id=895449 in non-IE11\n     * browsers.\n     *\n     * As per the above ticket, this is particularly important for Chrome, where, if\n     * unencrypted content is appended before encrypted content and the key session has not\n     * been created, a MEDIA_ERR_DECODE will be thrown once the encrypted content is reached\n     * during playback.\n     *\n     * @param {Object} player\n     *        The player instance\n     * @param {Object[]} sourceKeySystems\n     *        The key systems options from the player source\n     * @param {Object} [audioMedia]\n     *        The active audio media playlist (optional)\n     * @param {Object[]} mainPlaylists\n     *        The playlists found on the main playlist object\n     *\n     * @return {Object}\n     *         Promise that resolves when the key session has been created\n     */\n\n    const waitForKeySessionCreation = ({\n                                           player,\n                                           sourceKeySystems,\n                                           audioMedia,\n                                           mainPlaylists\n                                       }) => {\n        if (!player.eme.initializeMediaKeys) {\n            return Promise.resolve();\n        } // TODO should all audio PSSH values be initialized for DRM?\n        //\n        // All unique video rendition pssh values are initialized for DRM, but here only\n        // the initial audio playlist license is initialized. In theory, an encrypted\n        // event should be fired if the user switches to an alternative audio playlist\n        // where a license is required, but this case hasn't yet been tested. In addition, there\n        // may be many alternate audio playlists unlikely to be used (e.g., multiple different\n        // languages).\n\n        const playlists = audioMedia ? mainPlaylists.concat([audioMedia]) : mainPlaylists;\n        const keySystemsOptionsArr = getAllPsshKeySystemsOptions(playlists, Object.keys(sourceKeySystems));\n        const initializationFinishedPromises = [];\n        const keySessionCreatedPromises = []; // Since PSSH values are interpreted as initData, EME will dedupe any duplicates. The\n        // only place where it should not be deduped is for ms-prefixed APIs, but\n        // the existence of modern EME APIs in addition to\n        // ms-prefixed APIs on Edge should prevent this from being a concern.\n        // initializeMediaKeys also won't use the webkit-prefixed APIs.\n\n        keySystemsOptionsArr.forEach(keySystemsOptions => {\n            keySessionCreatedPromises.push(new Promise((resolve, reject) => {\n                player.tech_.one('keysessioncreated', resolve);\n            }));\n            initializationFinishedPromises.push(new Promise((resolve, reject) => {\n                player.eme.initializeMediaKeys({\n                    keySystems: keySystemsOptions\n                }, err => {\n                    if (err) {\n                        reject(err);\n                        return;\n                    }\n                    resolve();\n                });\n            }));\n        }); // The reasons Promise.race is chosen over Promise.any:\n        //\n        // * Promise.any is only available in Safari 14+.\n        // * None of these promises are expected to reject. If they do reject, it might be\n        //   better here for the race to surface the rejection, rather than mask it by using\n        //   Promise.any.\n\n        return Promise.race([\n            // If a session was previously created, these will all finish resolving without\n            // creating a new session, otherwise it will take until the end of all license\n            // requests, which is why the key session check is used (to make setup much faster).\n            Promise.all(initializationFinishedPromises),\n            // Once a single session is created, the browser knows DRM will be used.\n            Promise.race(keySessionCreatedPromises)]);\n    };\n    /**\n     * If the [eme](https://github.com/videojs/videojs-contrib-eme) plugin is available, and\n     * there are keySystems on the source, sets up source options to prepare the source for\n     * eme.\n     *\n     * @param {Object} player\n     *        The player instance\n     * @param {Object[]} sourceKeySystems\n     *        The key systems options from the player source\n     * @param {Object} media\n     *        The active media playlist\n     * @param {Object} [audioMedia]\n     *        The active audio media playlist (optional)\n     *\n     * @return {boolean}\n     *         Whether or not options were configured and EME is available\n     */\n\n    const setupEmeOptions = ({\n                                 player,\n                                 sourceKeySystems,\n                                 media,\n                                 audioMedia\n                             }) => {\n        const sourceOptions = emeKeySystems(sourceKeySystems, media, audioMedia);\n        if (!sourceOptions) {\n            return false;\n        }\n        player.currentSource().keySystems = sourceOptions; // eme handles the rest of the setup, so if it is missing\n        // do nothing.\n\n        if (sourceOptions && !player.eme) {\n            videojs.log.warn('DRM encrypted source cannot be decrypted without a DRM plugin');\n            return false;\n        }\n        return true;\n    };\n    const getVhsLocalStorage = () => {\n        if (!window.localStorage) {\n            return null;\n        }\n        const storedObject = window.localStorage.getItem(LOCAL_STORAGE_KEY);\n        if (!storedObject) {\n            return null;\n        }\n        try {\n            return JSON.parse(storedObject);\n        } catch (e) {\n            // someone may have tampered with the value\n            return null;\n        }\n    };\n    const updateVhsLocalStorage = options => {\n        if (!window.localStorage) {\n            return false;\n        }\n        let objectToStore = getVhsLocalStorage();\n        objectToStore = objectToStore ? merge(objectToStore, options) : options;\n        try {\n            window.localStorage.setItem(LOCAL_STORAGE_KEY, JSON.stringify(objectToStore));\n        } catch (e) {\n            // Throws if storage is full (e.g., always on iOS 5+ Safari private mode, where\n            // storage is set to 0).\n            // https://developer.mozilla.org/en-US/docs/Web/API/Storage/setItem#Exceptions\n            // No need to perform any operation.\n            return false;\n        }\n        return objectToStore;\n    };\n    /**\n     * Parses VHS-supported media types from data URIs. See\n     * https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs\n     * for information on data URIs.\n     *\n     * @param {string} dataUri\n     *        The data URI\n     *\n     * @return {string|Object}\n     *         The parsed object/string, or the original string if no supported media type\n     *         was found\n     */\n\n    const expandDataUri = dataUri => {\n        if (dataUri.toLowerCase().indexOf('data:application/vnd.videojs.vhs+json,') === 0) {\n            return JSON.parse(dataUri.substring(dataUri.indexOf(',') + 1));\n        } // no known case for this data URI, return the string as-is\n\n        return dataUri;\n    };\n    /**\n     * Adds a request hook to an xhr object\n     *\n     * @param {Object} xhr object to add the onRequest hook to\n     * @param {function} callback hook function for an xhr request\n     */\n\n    const addOnRequestHook = (xhr, callback) => {\n        if (!xhr._requestCallbackSet) {\n            xhr._requestCallbackSet = new Set();\n        }\n        xhr._requestCallbackSet.add(callback);\n    };\n    /**\n     * Adds a response hook to an xhr object\n     *\n     * @param {Object} xhr object to add the onResponse hook to\n     * @param {function} callback hook function for an xhr response\n     */\n\n    const addOnResponseHook = (xhr, callback) => {\n        if (!xhr._responseCallbackSet) {\n            xhr._responseCallbackSet = new Set();\n        }\n        xhr._responseCallbackSet.add(callback);\n    };\n    /**\n     * Removes a request hook on an xhr object, deletes the onRequest set if empty.\n     *\n     * @param {Object} xhr object to remove the onRequest hook from\n     * @param {function} callback hook function to remove\n     */\n\n    const removeOnRequestHook = (xhr, callback) => {\n        if (!xhr._requestCallbackSet) {\n            return;\n        }\n        xhr._requestCallbackSet.delete(callback);\n        if (!xhr._requestCallbackSet.size) {\n            delete xhr._requestCallbackSet;\n        }\n    };\n    /**\n     * Removes a response hook on an xhr object, deletes the onResponse set if empty.\n     *\n     * @param {Object} xhr object to remove the onResponse hook from\n     * @param {function} callback hook function to remove\n     */\n\n    const removeOnResponseHook = (xhr, callback) => {\n        if (!xhr._responseCallbackSet) {\n            return;\n        }\n        xhr._responseCallbackSet.delete(callback);\n        if (!xhr._responseCallbackSet.size) {\n            delete xhr._responseCallbackSet;\n        }\n    };\n    /**\n     * Whether the browser has built-in HLS support.\n     */\n\n    Vhs.supportsNativeHls = function () {\n        if (!document || !document.createElement) {\n            return false;\n        }\n        const video = document.createElement('video'); // native HLS is definitely not supported if HTML5 video isn't\n\n        if (!videojs.getTech('Html5').isSupported()) {\n            return false;\n        } // HLS manifests can go by many mime-types\n\n        const canPlay = [\n            // Apple santioned\n            'application/vnd.apple.mpegurl',\n            // Apple sanctioned for backwards compatibility\n            'audio/mpegurl',\n            // Very common\n            'audio/x-mpegurl',\n            // Very common\n            'application/x-mpegurl',\n            // Included for completeness\n            'video/x-mpegurl', 'video/mpegurl', 'application/mpegurl'];\n        return canPlay.some(function (canItPlay) {\n            return /maybe|probably/i.test(video.canPlayType(canItPlay));\n        });\n    }();\n    Vhs.supportsNativeDash = function () {\n        if (!document || !document.createElement || !videojs.getTech('Html5').isSupported()) {\n            return false;\n        }\n        return /maybe|probably/i.test(document.createElement('video').canPlayType('application/dash+xml'));\n    }();\n    Vhs.supportsTypeNatively = type => {\n        if (type === 'hls') {\n            return Vhs.supportsNativeHls;\n        }\n        if (type === 'dash') {\n            return Vhs.supportsNativeDash;\n        }\n        return false;\n    };\n    /**\n     * VHS is a source handler, not a tech. Make sure attempts to use it\n     * as one do not cause exceptions.\n     */\n\n    Vhs.isSupported = function () {\n        return videojs.log.warn('VHS is no longer a tech. Please remove it from ' + 'your player\\'s techOrder.');\n    };\n    /**\n     * A global function for setting an onRequest hook\n     *\n     * @param {function} callback for request modifiction\n     */\n\n    Vhs.xhr.onRequest = function (callback) {\n        addOnRequestHook(Vhs.xhr, callback);\n    };\n    /**\n     * A global function for setting an onResponse hook\n     *\n     * @param {callback} callback for response data retrieval\n     */\n\n    Vhs.xhr.onResponse = function (callback) {\n        addOnResponseHook(Vhs.xhr, callback);\n    };\n    /**\n     * Deletes a global onRequest callback if it exists\n     *\n     * @param {function} callback to delete from the global set\n     */\n\n    Vhs.xhr.offRequest = function (callback) {\n        removeOnRequestHook(Vhs.xhr, callback);\n    };\n    /**\n     * Deletes a global onResponse callback if it exists\n     *\n     * @param {function} callback to delete from the global set\n     */\n\n    Vhs.xhr.offResponse = function (callback) {\n        removeOnResponseHook(Vhs.xhr, callback);\n    };\n    const Component = videojs.getComponent('Component');\n    /**\n     * The Vhs Handler object, where we orchestrate all of the parts\n     * of VHS to interact with video.js\n     *\n     * @class VhsHandler\n     * @extends videojs.Component\n     * @param {Object} source the soruce object\n     * @param {Tech} tech the parent tech object\n     * @param {Object} options optional and required options\n     */\n\n    class VhsHandler extends Component {\n        constructor(source, tech, options) {\n            super(tech, options.vhs); // if a tech level `initialBandwidth` option was passed\n            // use that over the VHS level `bandwidth` option\n\n            if (typeof options.initialBandwidth === 'number') {\n                this.options_.bandwidth = options.initialBandwidth;\n            }\n            this.logger_ = logger('VhsHandler'); // we need access to the player in some cases,\n            // so, get it from Video.js via the `playerId`\n\n            if (tech.options_ && tech.options_.playerId) {\n                const _player = videojs.getPlayer(tech.options_.playerId);\n                this.player_ = _player;\n            }\n            this.tech_ = tech;\n            this.source_ = source;\n            this.stats = {};\n            this.ignoreNextSeekingEvent_ = false;\n            this.setOptions_();\n            if (this.options_.overrideNative && tech.overrideNativeAudioTracks && tech.overrideNativeVideoTracks) {\n                tech.overrideNativeAudioTracks(true);\n                tech.overrideNativeVideoTracks(true);\n            } else if (this.options_.overrideNative && (tech.featuresNativeVideoTracks || tech.featuresNativeAudioTracks)) {\n                // overriding native VHS only works if audio tracks have been emulated\n                // error early if we're misconfigured\n                throw new Error('Overriding native VHS requires emulated tracks. ' + 'See https://git.io/vMpjB');\n            } // listen for fullscreenchange events for this player so that we\n            // can adjust our quality selection quickly\n\n            this.on(document, ['fullscreenchange', 'webkitfullscreenchange', 'mozfullscreenchange', 'MSFullscreenChange'], event => {\n                const fullscreenElement = document.fullscreenElement || document.webkitFullscreenElement || document.mozFullScreenElement || document.msFullscreenElement;\n                if (fullscreenElement && fullscreenElement.contains(this.tech_.el())) {\n                    this.playlistController_.fastQualityChange_();\n                } else {\n                    // When leaving fullscreen, since the in page pixel dimensions should be smaller\n                    // than full screen, see if there should be a rendition switch down to preserve\n                    // bandwidth.\n                    this.playlistController_.checkABR_();\n                }\n            });\n            this.on(this.tech_, 'seeking', function () {\n                if (this.ignoreNextSeekingEvent_) {\n                    this.ignoreNextSeekingEvent_ = false;\n                    return;\n                }\n                this.setCurrentTime(this.tech_.currentTime());\n            });\n            this.on(this.tech_, 'error', function () {\n                // verify that the error was real and we are loaded\n                // enough to have pc loaded.\n                if (this.tech_.error() && this.playlistController_) {\n                    this.playlistController_.pauseLoading();\n                }\n            });\n            this.on(this.tech_, 'play', this.play);\n        }\n        /**\n         * Set VHS options based on options from configuration, as well as partial\n         * options to be passed at a later time.\n         *\n         * @param {Object} options A partial chunk of config options\n         */\n\n        setOptions_(options = {}) {\n            this.options_ = merge(this.options_, options); // defaults\n\n            this.options_.withCredentials = this.options_.withCredentials || false;\n            this.options_.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions === false ? false : true;\n            this.options_.useDevicePixelRatio = this.options_.useDevicePixelRatio || false;\n            this.options_.useBandwidthFromLocalStorage = typeof this.source_.useBandwidthFromLocalStorage !== 'undefined' ? this.source_.useBandwidthFromLocalStorage : this.options_.useBandwidthFromLocalStorage || false;\n            this.options_.useForcedSubtitles = this.options_.useForcedSubtitles || false;\n            this.options_.useNetworkInformationApi = this.options_.useNetworkInformationApi || false;\n            this.options_.useDtsForTimestampOffset = this.options_.useDtsForTimestampOffset || false;\n            this.options_.customTagParsers = this.options_.customTagParsers || [];\n            this.options_.customTagMappers = this.options_.customTagMappers || [];\n            this.options_.cacheEncryptionKeys = this.options_.cacheEncryptionKeys || false;\n            this.options_.llhls = this.options_.llhls === false ? false : true;\n            this.options_.bufferBasedABR = this.options_.bufferBasedABR || false;\n            if (typeof this.options_.playlistExclusionDuration !== 'number') {\n                this.options_.playlistExclusionDuration = 60;\n            }\n            if (typeof this.options_.bandwidth !== 'number') {\n                if (this.options_.useBandwidthFromLocalStorage) {\n                    const storedObject = getVhsLocalStorage();\n                    if (storedObject && storedObject.bandwidth) {\n                        this.options_.bandwidth = storedObject.bandwidth;\n                        this.tech_.trigger({\n                            type: 'usage',\n                            name: 'vhs-bandwidth-from-local-storage'\n                        });\n                    }\n                    if (storedObject && storedObject.throughput) {\n                        this.options_.throughput = storedObject.throughput;\n                        this.tech_.trigger({\n                            type: 'usage',\n                            name: 'vhs-throughput-from-local-storage'\n                        });\n                    }\n                }\n            } // if bandwidth was not set by options or pulled from local storage, start playlist\n            // selection at a reasonable bandwidth\n\n            if (typeof this.options_.bandwidth !== 'number') {\n                this.options_.bandwidth = Config.INITIAL_BANDWIDTH;\n            } // If the bandwidth number is unchanged from the initial setting\n            // then this takes precedence over the enableLowInitialPlaylist option\n\n            this.options_.enableLowInitialPlaylist = this.options_.enableLowInitialPlaylist && this.options_.bandwidth === Config.INITIAL_BANDWIDTH; // grab options passed to player.src\n\n            ['withCredentials', 'useDevicePixelRatio', 'limitRenditionByPlayerDimensions', 'bandwidth', 'customTagParsers', 'customTagMappers', 'cacheEncryptionKeys', 'playlistSelector', 'initialPlaylistSelector', 'bufferBasedABR', 'liveRangeSafeTimeDelta', 'llhls', 'useForcedSubtitles', 'useNetworkInformationApi', 'useDtsForTimestampOffset', 'exactManifestTimings', 'leastPixelDiffSelector'].forEach(option => {\n                if (typeof this.source_[option] !== 'undefined') {\n                    this.options_[option] = this.source_[option];\n                }\n            });\n            this.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions;\n            this.useDevicePixelRatio = this.options_.useDevicePixelRatio;\n        } // alias for public method to set options\n\n        setOptions(options = {}) {\n            this.setOptions_(options);\n        }\n        /**\n         * called when player.src gets called, handle a new source\n         *\n         * @param {Object} src the source object to handle\n         */\n\n        src(src, type) {\n            // do nothing if the src is falsey\n            if (!src) {\n                return;\n            }\n            this.setOptions_(); // add main playlist controller options\n\n            this.options_.src = expandDataUri(this.source_.src);\n            this.options_.tech = this.tech_;\n            this.options_.externVhs = Vhs;\n            this.options_.sourceType = simpleTypeFromSourceType(type); // Whenever we seek internally, we should update the tech\n\n            this.options_.seekTo = time => {\n                this.tech_.setCurrentTime(time);\n            };\n            this.playlistController_ = new PlaylistController(this.options_);\n            const playbackWatcherOptions = merge({\n                liveRangeSafeTimeDelta: SAFE_TIME_DELTA\n            }, this.options_, {\n                seekable: () => this.seekable(),\n                media: () => this.playlistController_.media(),\n                playlistController: this.playlistController_\n            });\n            this.playbackWatcher_ = new PlaybackWatcher(playbackWatcherOptions);\n            this.playlistController_.on('error', () => {\n                const player = videojs.players[this.tech_.options_.playerId];\n                let error = this.playlistController_.error;\n                if (typeof error === 'object' && !error.code) {\n                    error.code = 3;\n                } else if (typeof error === 'string') {\n                    error = {\n                        message: error,\n                        code: 3\n                    };\n                }\n                player.error(error);\n            });\n            const defaultSelector = this.options_.bufferBasedABR ? Vhs.movingAverageBandwidthSelector(0.55) : Vhs.STANDARD_PLAYLIST_SELECTOR; // `this` in selectPlaylist should be the VhsHandler for backwards\n            // compatibility with < v2\n\n            this.playlistController_.selectPlaylist = this.selectPlaylist ? this.selectPlaylist.bind(this) : defaultSelector.bind(this);\n            this.playlistController_.selectInitialPlaylist = Vhs.INITIAL_PLAYLIST_SELECTOR.bind(this); // re-expose some internal objects for backwards compatibility with < v2\n\n            this.playlists = this.playlistController_.mainPlaylistLoader_;\n            this.mediaSource = this.playlistController_.mediaSource; // Proxy assignment of some properties to the main playlist\n            // controller. Using a custom property for backwards compatibility\n            // with < v2\n\n            Object.defineProperties(this, {\n                selectPlaylist: {\n                    get() {\n                        return this.playlistController_.selectPlaylist;\n                    },\n                    set(selectPlaylist) {\n                        this.playlistController_.selectPlaylist = selectPlaylist.bind(this);\n                    }\n                },\n                throughput: {\n                    get() {\n                        return this.playlistController_.mainSegmentLoader_.throughput.rate;\n                    },\n                    set(throughput) {\n                        this.playlistController_.mainSegmentLoader_.throughput.rate = throughput; // By setting `count` to 1 the throughput value becomes the starting value\n                        // for the cumulative average\n\n                        this.playlistController_.mainSegmentLoader_.throughput.count = 1;\n                    }\n                },\n                bandwidth: {\n                    get() {\n                        let playerBandwidthEst = this.playlistController_.mainSegmentLoader_.bandwidth;\n                        const networkInformation = window.navigator.connection || window.navigator.mozConnection || window.navigator.webkitConnection;\n                        const tenMbpsAsBitsPerSecond = 10e6;\n                        if (this.options_.useNetworkInformationApi && networkInformation) {\n                            // downlink returns Mbps\n                            // https://developer.mozilla.org/en-US/docs/Web/API/NetworkInformation/downlink\n                            const networkInfoBandwidthEstBitsPerSec = networkInformation.downlink * 1000 * 1000; // downlink maxes out at 10 Mbps. In the event that both networkInformationApi and the player\n                            // estimate a bandwidth greater than 10 Mbps, use the larger of the two estimates to ensure that\n                            // high quality streams are not filtered out.\n\n                            if (networkInfoBandwidthEstBitsPerSec >= tenMbpsAsBitsPerSecond && playerBandwidthEst >= tenMbpsAsBitsPerSecond) {\n                                playerBandwidthEst = Math.max(playerBandwidthEst, networkInfoBandwidthEstBitsPerSec);\n                            } else {\n                                playerBandwidthEst = networkInfoBandwidthEstBitsPerSec;\n                            }\n                        }\n                        return playerBandwidthEst;\n                    },\n                    set(bandwidth) {\n                        this.playlistController_.mainSegmentLoader_.bandwidth = bandwidth; // setting the bandwidth manually resets the throughput counter\n                        // `count` is set to zero that current value of `rate` isn't included\n                        // in the cumulative average\n\n                        this.playlistController_.mainSegmentLoader_.throughput = {\n                            rate: 0,\n                            count: 0\n                        };\n                    }\n                },\n                /**\n                 * `systemBandwidth` is a combination of two serial processes bit-rates. The first\n                 * is the network bitrate provided by `bandwidth` and the second is the bitrate of\n                 * the entire process after that - decryption, transmuxing, and appending - provided\n                 * by `throughput`.\n                 *\n                 * Since the two process are serial, the overall system bandwidth is given by:\n                 *   sysBandwidth = 1 / (1 / bandwidth + 1 / throughput)\n                 */\n                systemBandwidth: {\n                    get() {\n                        const invBandwidth = 1 / (this.bandwidth || 1);\n                        let invThroughput;\n                        if (this.throughput > 0) {\n                            invThroughput = 1 / this.throughput;\n                        } else {\n                            invThroughput = 0;\n                        }\n                        const systemBitrate = Math.floor(1 / (invBandwidth + invThroughput));\n                        return systemBitrate;\n                    },\n                    set() {\n                        videojs.log.error('The \"systemBandwidth\" property is read-only');\n                    }\n                }\n            });\n            if (this.options_.bandwidth) {\n                this.bandwidth = this.options_.bandwidth;\n            }\n            if (this.options_.throughput) {\n                this.throughput = this.options_.throughput;\n            }\n            Object.defineProperties(this.stats, {\n                bandwidth: {\n                    get: () => this.bandwidth || 0,\n                    enumerable: true\n                },\n                mediaRequests: {\n                    get: () => this.playlistController_.mediaRequests_() || 0,\n                    enumerable: true\n                },\n                mediaRequestsAborted: {\n                    get: () => this.playlistController_.mediaRequestsAborted_() || 0,\n                    enumerable: true\n                },\n                mediaRequestsTimedout: {\n                    get: () => this.playlistController_.mediaRequestsTimedout_() || 0,\n                    enumerable: true\n                },\n                mediaRequestsErrored: {\n                    get: () => this.playlistController_.mediaRequestsErrored_() || 0,\n                    enumerable: true\n                },\n                mediaTransferDuration: {\n                    get: () => this.playlistController_.mediaTransferDuration_() || 0,\n                    enumerable: true\n                },\n                mediaBytesTransferred: {\n                    get: () => this.playlistController_.mediaBytesTransferred_() || 0,\n                    enumerable: true\n                },\n                mediaSecondsLoaded: {\n                    get: () => this.playlistController_.mediaSecondsLoaded_() || 0,\n                    enumerable: true\n                },\n                mediaAppends: {\n                    get: () => this.playlistController_.mediaAppends_() || 0,\n                    enumerable: true\n                },\n                mainAppendsToLoadedData: {\n                    get: () => this.playlistController_.mainAppendsToLoadedData_() || 0,\n                    enumerable: true\n                },\n                audioAppendsToLoadedData: {\n                    get: () => this.playlistController_.audioAppendsToLoadedData_() || 0,\n                    enumerable: true\n                },\n                appendsToLoadedData: {\n                    get: () => this.playlistController_.appendsToLoadedData_() || 0,\n                    enumerable: true\n                },\n                timeToLoadedData: {\n                    get: () => this.playlistController_.timeToLoadedData_() || 0,\n                    enumerable: true\n                },\n                buffered: {\n                    get: () => timeRangesToArray(this.tech_.buffered()),\n                    enumerable: true\n                },\n                currentTime: {\n                    get: () => this.tech_.currentTime(),\n                    enumerable: true\n                },\n                currentSource: {\n                    get: () => this.tech_.currentSource_,\n                    enumerable: true\n                },\n                currentTech: {\n                    get: () => this.tech_.name_,\n                    enumerable: true\n                },\n                duration: {\n                    get: () => this.tech_.duration(),\n                    enumerable: true\n                },\n                main: {\n                    get: () => this.playlists.main,\n                    enumerable: true\n                },\n                playerDimensions: {\n                    get: () => this.tech_.currentDimensions(),\n                    enumerable: true\n                },\n                seekable: {\n                    get: () => timeRangesToArray(this.tech_.seekable()),\n                    enumerable: true\n                },\n                timestamp: {\n                    get: () => Date.now(),\n                    enumerable: true\n                },\n                videoPlaybackQuality: {\n                    get: () => this.tech_.getVideoPlaybackQuality(),\n                    enumerable: true\n                }\n            });\n            this.tech_.one('canplay', this.playlistController_.setupFirstPlay.bind(this.playlistController_));\n            this.tech_.on('bandwidthupdate', () => {\n                if (this.options_.useBandwidthFromLocalStorage) {\n                    updateVhsLocalStorage({\n                        bandwidth: this.bandwidth,\n                        throughput: Math.round(this.throughput)\n                    });\n                }\n            });\n            this.playlistController_.on('selectedinitialmedia', () => {\n                // Add the manual rendition mix-in to VhsHandler\n                renditionSelectionMixin(this);\n            });\n            this.playlistController_.sourceUpdater_.on('createdsourcebuffers', () => {\n                this.setupEme_();\n            }); // the bandwidth of the primary segment loader is our best\n            // estimate of overall bandwidth\n\n            this.on(this.playlistController_, 'progress', function () {\n                this.tech_.trigger('progress');\n            }); // In the live case, we need to ignore the very first `seeking` event since\n            // that will be the result of the seek-to-live behavior\n\n            this.on(this.playlistController_, 'firstplay', function () {\n                this.ignoreNextSeekingEvent_ = true;\n            });\n            this.setupQualityLevels_(); // do nothing if the tech has been disposed already\n            // this can occur if someone sets the src in player.ready(), for instance\n\n            if (!this.tech_.el()) {\n                return;\n            }\n            this.mediaSourceUrl_ = window.URL.createObjectURL(this.playlistController_.mediaSource);\n            this.tech_.src(this.mediaSourceUrl_);\n        }\n        createKeySessions_() {\n            const audioPlaylistLoader = this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader;\n            this.logger_('waiting for EME key session creation');\n            waitForKeySessionCreation({\n                player: this.player_,\n                sourceKeySystems: this.source_.keySystems,\n                audioMedia: audioPlaylistLoader && audioPlaylistLoader.media(),\n                mainPlaylists: this.playlists.main.playlists\n            }).then(() => {\n                this.logger_('created EME key session');\n                this.playlistController_.sourceUpdater_.initializedEme();\n            }).catch(err => {\n                this.logger_('error while creating EME key session', err);\n                this.player_.error({\n                    message: 'Failed to initialize media keys for EME',\n                    code: 3\n                });\n            });\n        }\n        handleWaitingForKey_() {\n            // If waitingforkey is fired, it's possible that the data that's necessary to retrieve\n            // the key is in the manifest. While this should've happened on initial source load, it\n            // may happen again in live streams where the keys change, and the manifest info\n            // reflects the update.\n            //\n            // Because videojs-contrib-eme compares the PSSH data we send to that of PSSH data it's\n            // already requested keys for, we don't have to worry about this generating extraneous\n            // requests.\n            this.logger_('waitingforkey fired, attempting to create any new key sessions');\n            this.createKeySessions_();\n        }\n        /**\n         * If necessary and EME is available, sets up EME options and waits for key session\n         * creation.\n         *\n         * This function also updates the source updater so taht it can be used, as for some\n         * browsers, EME must be configured before content is appended (if appending unencrypted\n         * content before encrypted content).\n         */\n\n        setupEme_() {\n            const audioPlaylistLoader = this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader;\n            const didSetupEmeOptions = setupEmeOptions({\n                player: this.player_,\n                sourceKeySystems: this.source_.keySystems,\n                media: this.playlists.media(),\n                audioMedia: audioPlaylistLoader && audioPlaylistLoader.media()\n            });\n            this.player_.tech_.on('keystatuschange', e => {\n                this.playlistController_.updatePlaylistByKeyStatus(e.keyId, e.status);\n            });\n            this.handleWaitingForKey_ = this.handleWaitingForKey_.bind(this);\n            this.player_.tech_.on('waitingforkey', this.handleWaitingForKey_);\n            if (!didSetupEmeOptions) {\n                // If EME options were not set up, we've done all we could to initialize EME.\n                this.playlistController_.sourceUpdater_.initializedEme();\n                return;\n            }\n            this.createKeySessions_();\n        }\n        /**\n         * Initializes the quality levels and sets listeners to update them.\n         *\n         * @method setupQualityLevels_\n         * @private\n         */\n\n        setupQualityLevels_() {\n            const player = videojs.players[this.tech_.options_.playerId]; 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\ No newline at end of file
diff --git a/media/player/videojs/amd/src/video-lazy.js b/media/player/videojs/amd/src/video-lazy.js
index 362985ce8d00..b2614acdb57b 100644
--- a/media/player/videojs/amd/src/video-lazy.js
+++ b/media/player/videojs/amd/src/video-lazy.js
@@ -1,6 +1,6 @@
 /**
  * @license
- * Video.js 8.3.0 <http://videojs.com/>
+ * Video.js 8.10.0 <http://videojs.com/>
  * Copyright Brightcove, Inc. <https://www.brightcove.com/>
  * Available under Apache License Version 2.0
  * <https://github.com/videojs/video.js/blob/main/LICENSE>
@@ -16,7 +16,7 @@
             (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.videojs = factory());
 })(this, (function () { 'use strict';
 
-    var version$5 = "8.3.0";
+    var version$5 = "8.10.0";
 
     /**
      * An Object that contains lifecycle hooks as keys which point to an array
@@ -119,11 +119,7 @@
     // browser API methods
     const apiMap = [['requestFullscreen', 'exitFullscreen', 'fullscreenElement', 'fullscreenEnabled', 'fullscreenchange', 'fullscreenerror', 'fullscreen'],
         // WebKit
-        ['webkitRequestFullscreen', 'webkitExitFullscreen', 'webkitFullscreenElement', 'webkitFullscreenEnabled', 'webkitfullscreenchange', 'webkitfullscreenerror', '-webkit-full-screen'],
-        // Mozilla
-        ['mozRequestFullScreen', 'mozCancelFullScreen', 'mozFullScreenElement', 'mozFullScreenEnabled', 'mozfullscreenchange', 'mozfullscreenerror', '-moz-full-screen'],
-        // Microsoft
-        ['msRequestFullscreen', 'msExitFullscreen', 'msFullscreenElement', 'msFullscreenEnabled', 'MSFullscreenChange', 'MSFullscreenError', '-ms-fullscreen']];
+        ['webkitRequestFullscreen', 'webkitExitFullscreen', 'webkitFullscreenElement', 'webkitFullscreenEnabled', 'webkitfullscreenchange', 'webkitfullscreenerror', '-webkit-full-screen']];
     const specApi = apiMap[0];
     let browserApi;
 
@@ -156,22 +152,30 @@
      * Log messages to the console and history based on the type of message
      *
      * @private
-     * @param  {string} type
+     * @param  {string} name
      *         The name of the console method to use.
      *
-     * @param  {Array} args
+     * @param  {Object} log
      *         The arguments to be passed to the matching console method.
+     *
+     * @param {string} [styles]
+     *        styles for name
      */
-    const LogByTypeFactory = (name, log) => (type, level, args) => {
+    const LogByTypeFactory = (name, log, styles) => (type, level, args) => {
         const lvl = log.levels[level];
         const lvlRegExp = new RegExp(`^(${lvl})$`);
+        let resultName = name;
         if (type !== 'log') {
             // Add the type to the front of the message when it's not "log".
             args.unshift(type.toUpperCase() + ':');
         }
+        if (styles) {
+            resultName = `%c${name}`;
+            args.unshift(styles);
+        }
 
         // Add console prefix after adding to history.
-        args.unshift(name + ':');
+        args.unshift(resultName + ':');
 
         // Add a clone of the args at this point to history.
         if (history) {
@@ -205,7 +209,7 @@
         }
         fn[Array.isArray(args) ? 'apply' : 'call'](window.console, args);
     };
-    function createLogger$1(name) {
+    function createLogger$1(name, delimiter = ':', styles = '') {
         // This is the private tracking variable for logging level.
         let level = 'info';
 
@@ -238,10 +242,10 @@
         };
 
         // This is the logByType helper that the logging methods below use
-        logByType = LogByTypeFactory(name, log);
+        logByType = LogByTypeFactory(name, log, styles);
 
         /**
-         * Create a new sublogger which chains the old name to the new name.
+         * Create a new subLogger which chains the old name to the new name.
          *
          * For example, doing `videojs.log.createLogger('player')` and then using that logger will log the following:
          * ```js
@@ -249,11 +253,35 @@
          *  // > VIDEOJS: player: foo
          * ```
          *
-         * @param {string} name
+         * @param {string} subName
          *        The name to add call the new logger
+         * @param {string} [subDelimiter]
+         *        Optional delimiter
+         * @param {string} [subStyles]
+         *        Optional styles
+         * @return {Object}
+         */
+        log.createLogger = (subName, subDelimiter, subStyles) => {
+            const resultDelimiter = subDelimiter !== undefined ? subDelimiter : delimiter;
+            const resultStyles = subStyles !== undefined ? subStyles : styles;
+            const resultName = `${name} ${resultDelimiter} ${subName}`;
+            return createLogger$1(resultName, resultDelimiter, resultStyles);
+        };
+
+        /**
+         * Create a new logger.
+         *
+         * @param {string} newName
+         *        The name for the new logger
+         * @param {string} [newDelimiter]
+         *        Optional delimiter
+         * @param {string} [newStyles]
+         *        Optional styles
          * @return {Object}
          */
-        log.createLogger = subname => createLogger$1(name + ': ' + subname);
+        log.createNewLogger = (newName, newDelimiter, newStyles) => {
+            return createLogger$1(newName, newDelimiter, newStyles);
+        };
 
         /**
          * Enumeration of available logging levels, where the keys are the level names
@@ -290,7 +318,7 @@
          * If a string matching a key from {@link module:log.levels} is provided, acts
          * as a setter.
          *
-         * @param  {string} [lvl]
+         * @param  {'all'|'debug'|'info'|'warn'|'error'|'off'} [lvl]
          *         Pass a valid level to set a new logging level.
          *
          * @return {string}
@@ -539,6 +567,23 @@
         return result;
     }
 
+    /**
+     * Returns an array of values for a given object
+     *
+     * @param  {Object} source - target object
+     * @return {Array<unknown>} - object values
+     */
+    function values$1(source = {}) {
+        const result = [];
+        for (const key in source) {
+            if (source.hasOwnProperty(key)) {
+                const value = source[key];
+                result.push(value);
+            }
+        }
+        return result;
+    }
+
     /**
      * Object.defineProperty but "lazy", which means that the value is only set after
      * it is retrieved the first time, rather than being set right away.
@@ -576,6 +621,7 @@
         isObject: isObject$1,
         isPlain: isPlain,
         merge: merge$2,
+        values: values$1,
         defineLazyProperty: defineLazyProperty
     });
 
@@ -728,7 +774,7 @@
      */
     const TOUCH_ENABLED = Boolean(isReal() && ('ontouchstart' in window || window.navigator.maxTouchPoints || window.DocumentTouch && window.document instanceof window.DocumentTouch));
     const UAD = window.navigator && window.navigator.userAgentData;
-    if (UAD) {
+    if (UAD && UAD.platform && UAD.brands) {
         // If userAgentData is present, use it instead of userAgent to avoid warnings
         // Currently only implemented on Chromium
         // userAgentData does not expose Android version, so ANDROID_VERSION remains `null`
@@ -987,7 +1033,7 @@
     /**
      * Injects text into an element, replacing any existing contents entirely.
      *
-     * @param  {Element} el
+     * @param  {HTMLElement} el
      *         The element to add text content into
      *
      * @param  {string} text
@@ -1163,16 +1209,17 @@
         // known boolean attributes
         // we can check for matching boolean properties, but not all browsers
         // and not all tags know about these attributes, so, we still want to check them manually
-        const knownBooleans = ',' + 'autoplay,controls,playsinline,loop,muted,default,defaultMuted' + ',';
+        const knownBooleans = ['autoplay', 'controls', 'playsinline', 'loop', 'muted', 'default', 'defaultMuted'];
         if (tag && tag.attributes && tag.attributes.length > 0) {
             const attrs = tag.attributes;
             for (let i = attrs.length - 1; i >= 0; i--) {
                 const attrName = attrs[i].name;
+                /** @type {boolean|string} */
                 let attrVal = attrs[i].value;
 
                 // check for known booleans
                 // the matching element property will return a value for typeof
-                if (typeof tag[attrName] === 'boolean' || knownBooleans.indexOf(',' + attrName + ',') !== -1) {
+                if (knownBooleans.includes(attrName)) {
                     // the value of an included boolean attribute is typically an empty
                     // string ('') which would equal false if we just check for a false value.
                     // we also don't want support bad code like autoplay='false'
@@ -1527,7 +1574,7 @@
     /**
      * Check if an event was a single left click.
      *
-     * @param  {Event} event
+     * @param  {MouseEvent} event
      *         Event object.
      *
      * @return {boolean}
@@ -1645,6 +1692,32 @@
         return '';
     }
 
+    /**
+     * Copy document style sheets to another window.
+     *
+     * @param    {Window} win
+     *           The window element you want to copy the document style sheets to.
+     *
+     */
+    function copyStyleSheetsToWindow(win) {
+        [...document.styleSheets].forEach(styleSheet => {
+            try {
+                const cssRules = [...styleSheet.cssRules].map(rule => rule.cssText).join('');
+                const style = document.createElement('style');
+                style.textContent = cssRules;
+                win.document.head.appendChild(style);
+            } catch (e) {
+                const link = document.createElement('link');
+                link.rel = 'stylesheet';
+                link.type = styleSheet.type;
+                // For older Safari this has to be the string; on other browsers setting the MediaList works
+                link.media = styleSheet.media.mediaText;
+                link.href = styleSheet.href;
+                win.document.head.appendChild(link);
+            }
+        });
+    }
+
     var Dom = /*#__PURE__*/Object.freeze({
         __proto__: null,
         isReal: isReal,
@@ -1675,7 +1748,8 @@
         isSingleLeftClick: isSingleLeftClick,
         $: $,
         $$: $$,
-        computedStyle: computedStyle
+        computedStyle: computedStyle,
+        copyStyleSheetsToWindow: copyStyleSheetsToWindow
     });
 
     /**
@@ -1922,7 +1996,7 @@
      * @param {Element|Object} elem
      *        Element or object to bind listeners to
      *
-     * @param {string} type
+     * @param {string[]} types
      *        Type of event to bind to.
      *
      * @param {Function} callback
@@ -2645,7 +2719,7 @@
     /**
      * All event listeners should follow the following format.
      *
-     * @callback EventTarget~EventListener
+     * @callback EventListener
      * @this {EventTarget}
      *
      * @param {Event} event
@@ -2662,7 +2736,7 @@
      *         will have extra functionality. See that function for more information.
      *
      * @property EventTarget.prototype.allowedEvents_
-     * @private
+     * @protected
      */
     EventTarget$2.prototype.allowedEvents_ = {};
 
@@ -2727,7 +2801,7 @@
     /**
      * Adds a callback to run after the evented mixin applied.
      *
-     * @param  {Object} object
+     * @param  {Object} target
      *         An object to Add
      * @param  {Function} callback
      *         The callback to run.
@@ -3693,8 +3767,8 @@
          * @param {string|string[]} type
          *        An event name or an array of event names.
          *
-         * @param {Function} fn
-         *        The function to remove.
+         * @param {Function} [fn]
+         *        The function to remove. If not specified, all listeners managed by Video.js will be removed.
          */
         off(type, fn) {}
 
@@ -3740,8 +3814,11 @@
          * @param {string|Event|Object} event
          *        The name of the event, an `Event`, or an object with a key of type set to
          *        an event name.
+         *
+         * @param {Object} [hash]
+         *        Optionally extra argument to pass through to an event listener
          */
-        trigger(event) {}
+        trigger(event, hash) {}
 
         /**
          * Dispose of the `Component` and all child components.
@@ -4043,8 +4120,54 @@
         }
 
         /**
-         * Add a child `Component` inside the current `Component`.
+         * Adds an SVG icon element to another element or component.
          *
+         * @param {string} iconName
+         *        The name of icon. A list of all the icon names can be found at 'sandbox/svg-icons.html'
+         *
+         * @param {Element} [el=this.el()]
+         *        Element to set the title on. Defaults to the current Component's element.
+         *
+         * @return {Element}
+         *        The newly created icon element.
+         */
+        setIcon(iconName, el = this.el()) {
+            // TODO: In v9 of video.js, we will want to remove font icons entirely.
+            // This means this check, as well as the others throughout the code, and
+            // the unecessary CSS for font icons, will need to be removed.
+            // See https://github.com/videojs/video.js/pull/8260 as to which components
+            // need updating.
+            if (!this.player_.options_.experimentalSvgIcons) {
+                return;
+            }
+            const xmlnsURL = 'http://www.w3.org/2000/svg';
+
+            // The below creates an element in the format of:
+            // <span><svg><use>....</use></svg></span>
+            const iconContainer = createEl('span', {
+                className: 'vjs-icon-placeholder vjs-svg-icon'
+            }, {
+                'aria-hidden': 'true'
+            });
+            const svgEl = document.createElementNS(xmlnsURL, 'svg');
+            svgEl.setAttributeNS(null, 'viewBox', '0 0 512 512');
+            const useEl = document.createElementNS(xmlnsURL, 'use');
+            svgEl.appendChild(useEl);
+            useEl.setAttributeNS(null, 'href', `#vjs-icon-${iconName}`);
+            iconContainer.appendChild(svgEl);
+
+            // Replace a pre-existing icon if one exists.
+            if (this.iconIsSet_) {
+                el.replaceChild(iconContainer, el.querySelector('.vjs-icon-placeholder'));
+            } else {
+                el.appendChild(iconContainer);
+            }
+            this.iconIsSet_ = true;
+            return iconContainer;
+        }
+
+        /**
+         * Add a child `Component` inside the current `Component`.
          *
          * @param {string|Component} child
          *        The name or instance of a child to add.
@@ -4056,6 +4179,7 @@
          * @param {number} [index=this.children_.length]
          *        The index to attempt to add a child into.
          *
+         *
          * @return {Component}
          *         The `Component` that gets added as a child. When using a string the
          *         `Component` will get created by this process.
@@ -4510,9 +4634,8 @@
          * @param {boolean} [skipListeners]
          *        Skip the componentresize event trigger
          *
-         * @return {number|string}
-         *         The width when getting, zero if there is no width. Can be a string
-         *           postpixed with '%' or 'px'.
+         * @return {number|undefined}
+         *         The width when getting, zero if there is no width
          */
         width(num, skipListeners) {
             return this.dimension('width', num, skipListeners);
@@ -4528,9 +4651,8 @@
          * @param {boolean} [skipListeners]
          *        Skip the componentresize event trigger
          *
-         * @return {number|string}
-         *         The width when getting, zero if there is no width. Can be a string
-         *         postpixed with '%' or 'px'.
+         * @return {number|undefined}
+         *         The height when getting, zero if there is no height
          */
         height(num, skipListeners) {
             return this.dimension('height', num, skipListeners);
@@ -4576,7 +4698,7 @@
          * @param  {boolean} [skipListeners]
          *         Skip componentresize event trigger
          *
-         * @return {number}
+         * @return {number|undefined}
          *         The dimension when getting or 0 if unset
          */
         dimension(widthOrHeight, num, skipListeners) {
@@ -4751,7 +4873,7 @@
          * delegates to `handleKeyDown`. This means anyone calling `handleKeyPress`
          * will not see their method calls stop working.
          *
-         * @param {Event} event
+         * @param {KeyboardEvent} event
          *        The event that caused this function to be called.
          */
         handleKeyPress(event) {
@@ -4763,7 +4885,7 @@
          * support toggling the controls through a tap on the video. They get enabled
          * because every sub-component would have extra overhead otherwise.
          *
-         * @private
+         * @protected
          * @fires Component#tap
          * @listens Component#touchstart
          * @listens Component#touchmove
@@ -5222,7 +5344,7 @@
          * @param {string} name
          *        The Name of the component to get.
          *
-         * @return {Component}
+         * @return {typeof Component}
          *         The `Component` that got registered under the given name.
          */
         static getComponent(name) {
@@ -6400,7 +6522,7 @@
      * Events that can be called with on + eventName. See {@link EventHandler}.
      *
      * @property {Object} TrackList#allowedEvents_
-     * @private
+     * @protected
      */
     TrackList.prototype.allowedEvents_ = {
         change: 'change',
@@ -6450,7 +6572,7 @@
         /**
          * Create an instance of this class.
          *
-         * @param {AudioTrack[]} [tracks=[]]
+         * @param { import('./audio-track').default[] } [tracks=[]]
          *        A list of `AudioTrack` to instantiate the list with.
          */
         constructor(tracks = []) {
@@ -7888,7 +8010,9 @@
          */
         addCue(originalCue) {
             let cue = originalCue;
-            if (window.vttjs && !(originalCue instanceof window.vttjs.VTTCue)) {
+
+            // Testing if the cue is a VTTCue in a way that survives minification
+            if (!('getCueAsHTML' in cue)) {
                 cue = new window.vttjs.VTTCue(originalCue.startTime, originalCue.endTime, originalCue.text);
                 for (const prop in originalCue) {
                     if (!(prop in cue)) {
@@ -7931,6 +8055,7 @@
 
     /**
      * cuechange - One or more cues in the track have become active or stopped being active.
+     * @protected
      */
     TextTrack.prototype.allowedEvents_ = {
         cuechange: 'cuechange'
@@ -8189,6 +8314,10 @@
             });
         }
     }
+
+    /**
+     * @protected
+     */
     HTMLTrackElement.prototype.allowedEvents_ = {
         load: 'load'
     };
@@ -8831,12 +8960,14 @@
         var textPos = 0;
         switch (cue.positionAlign) {
             case "start":
+            case "line-left":
                 textPos = cue.position;
                 break;
             case "center":
                 textPos = cue.position - cue.size / 2;
                 break;
             case "end":
+            case "line-right":
                 textPos = cue.position - cue.size;
                 break;
         }
@@ -9984,7 +10115,7 @@
      * * `var SourceObject = {src: 'http://ex.com/video.mp4', type: 'video/mp4'};`
      * `var SourceString = 'http://example.com/some-video.mp4';`
      *
-     * @typedef {Object|string} Tech~SourceObject
+     * @typedef {Object|string} SourceObject
      *
      * @property {string} src
      *           The url to the source
@@ -10420,7 +10551,7 @@
          * > NOTE: This implementation is incomplete. It does not track the played `TimeRange`.
          *         It only checks whether the source has played at all or not.
          *
-         * @return {TimeRange}
+         * @return { import('../utils/time').TimeRange }
          *         - A single time range if this video has played
          *         - An empty set of ranges if not.
          */
@@ -11184,7 +11315,7 @@
          *
          * TODO: Answer question: should 'probably' be prioritized over 'maybe'
          *
-         * @param {Tech~SourceObject} source
+         * @param {SourceObject} source
          *        The source object
          *
          * @param {Object} options
@@ -11209,7 +11340,7 @@
         /**
          * Check if the tech can support the given source.
          *
-         * @param {Tech~SourceObject} srcObj
+         * @param {SourceObject} srcObj
          *        The source object
          *
          * @param {Object} options
@@ -11264,7 +11395,7 @@
          * and source handlers.
          * Should never be called unless a source handler was found.
          *
-         * @param {Tech~SourceObject} source
+         * @param {SourceObject} source
          *        A source object with src and type keys
          */
         _Tech.prototype.setSource = function (source) {
@@ -11767,6 +11898,8 @@
         return src;
     }
 
+    var icons = "<svg xmlns=\"http://www.w3.org/2000/svg\">\n  <defs>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-play\">\n      <path d=\"M16 10v28l22-14z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-pause\">\n      <path d=\"M12 38h8V10h-8v28zm16-28v28h8V10h-8z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-audio\">\n      <path d=\"M24 2C14.06 2 6 10.06 6 20v14c0 3.31 2.69 6 6 6h6V24h-8v-4c0-7.73 6.27-14 14-14s14 6.27 14 14v4h-8v16h6c3.31 0 6-2.69 6-6V20c0-9.94-8.06-18-18-18z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-captions\">\n      <path d=\"M38 8H10c-2.21 0-4 1.79-4 4v24c0 2.21 1.79 4 4 4h28c2.21 0 4-1.79 4-4V12c0-2.21-1.79-4-4-4zM22 22h-3v-1h-4v6h4v-1h3v2a2 2 0 0 1-2 2h-6a2 2 0 0 1-2-2v-8a2 2 0 0 1 2-2h6a2 2 0 0 1 2 2v2zm14 0h-3v-1h-4v6h4v-1h3v2a2 2 0 0 1-2 2h-6a2 2 0 0 1-2-2v-8a2 2 0 0 1 2-2h6a2 2 0 0 1 2 2v2z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-subtitles\">\n      <path d=\"M40 8H8c-2.21 0-4 1.79-4 4v24c0 2.21 1.79 4 4 4h32c2.21 0 4-1.79 4-4V12c0-2.21-1.79-4-4-4zM8 24h8v4H8v-4zm20 12H8v-4h20v4zm12 0h-8v-4h8v4zm0-8H20v-4h20v4z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-fullscreen-enter\">\n      <path d=\"M14 28h-4v10h10v-4h-6v-6zm-4-8h4v-6h6v-4H10v10zm24 14h-6v4h10V28h-4v6zm-6-24v4h6v6h4V10H28z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-fullscreen-exit\">\n      <path d=\"M10 32h6v6h4V28H10v4zm6-16h-6v4h10V10h-4v6zm12 22h4v-6h6v-4H28v10zm4-22v-6h-4v10h10v-4h-6z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-play-circle\">\n      <path d=\"M20 33l12-9-12-9v18zm4-29C12.95 4 4 12.95 4 24s8.95 20 20 20 20-8.95 20-20S35.05 4 24 4zm0 36c-8.82 0-16-7.18-16-16S15.18 8 24 8s16 7.18 16 16-7.18 16-16 16z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-volume-mute\">\n      <path d=\"M33 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id=\"vjs-icon-shuffle\">\n      <path d=\"M21.17 18.34L10.83 8 8 10.83l10.34 10.34 2.83-2.83zM29 8l4.09 4.09L8 37.17 10.83 40l25.09-25.09L40 19V8H29zm.66 18.83l-2.83 2.83 6.26 6.26L29 40h11V29l-4.09 4.09-6.25-6.26z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-cast\">\n      <path d=\"M42 6H6c-2.21 0-4 1.79-4 4v6h4v-6h36v28H28v4h14c2.21 0 4-1.79 4-4V10c0-2.21-1.79-4-4-4zM2 36v6h6c0-3.31-2.69-6-6-6zm0-8v4c5.52 0 10 4.48 10 10h4c0-7.73-6.27-14-14-14zm0-8v4c9.94 0 18 8.06 18 18h4c0-12.15-9.85-22-22-22z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-picture-in-picture-enter\">\n      <path d=\"M38 22H22v11.99h16V22zm8 16V9.96C46 7.76 44.2 6 42 6H6C3.8 6 2 7.76 2 9.96V38c0 2.2 1.8 4 4 4h36c2.2 0 4-1.8 4-4zm-4 .04H6V9.94h36v28.1z\"></path>\n    </symbol>\n    <symbol viewBox=\"0 0 22 18\" id=\"vjs-icon-picture-in-picture-exit\">\n      <path d=\"M18 4H4v10h14V4zm4 12V1.98C22 .88 21.1 0 20 0H2C.9 0 0 .88 0 1.98V16c0 1.1.9 2 2 2h18c1.1 0 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+
     /**
      * @file loader.js
      */
@@ -11901,11 +12034,13 @@
             }, attributes);
             this.tabIndex_ = props.tabIndex;
             const el = createEl(tag, props, attributes);
-            el.appendChild(createEl('span', {
-                className: 'vjs-icon-placeholder'
-            }, {
-                'aria-hidden': true
-            }));
+            if (!this.player_.options_.experimentalSvgIcons) {
+                el.appendChild(createEl('span', {
+                    className: 'vjs-icon-placeholder'
+                }, {
+                    'aria-hidden': true
+                }));
+            }
             this.createControlTextEl(el);
             return el;
         }
@@ -12039,7 +12174,7 @@
          *
          * By default, if the key is Space or Enter, it will trigger a `click` event.
          *
-         * @param {Event} event
+         * @param {KeyboardEvent} event
          *        The `keydown` event that caused this function to be called.
          *
          * @listens keydown
@@ -12303,6 +12438,21 @@
         }
     }
 
+    /**
+     * Converts the CSS top/right/bottom/left property numeric value to string in pixels.
+     *
+     * @param {number} position
+     *        The CSS top/right/bottom/left property value.
+     *
+     * @return {string}
+     *          The CSS property value that was created, like '10px'.
+     *
+     * @private
+     */
+    function getCSSPositionValue(position) {
+        return position ? `${position}px` : '';
+    }
+
     /**
      * The component for displaying text track cues.
      *
@@ -12323,10 +12473,17 @@
          */
         constructor(player, options, ready) {
             super(player, options, ready);
-            const updateDisplayHandler = e => this.updateDisplay(e);
+            const updateDisplayTextHandler = e => this.updateDisplay(e);
+            const updateDisplayHandler = e => {
+                this.updateDisplayOverlay();
+                this.updateDisplay(e);
+            };
             player.on('loadstart', e => this.toggleDisplay(e));
-            player.on('texttrackchange', updateDisplayHandler);
-            player.on('loadedmetadata', e => this.preselectTrack(e));
+            player.on('texttrackchange', updateDisplayTextHandler);
+            player.on('loadedmetadata', e => {
+                this.updateDisplayOverlay();
+                this.preselectTrack(e);
+            });
 
             // This used to be called during player init, but was causing an error
             // if a track should show by default and the display hadn't loaded yet.
@@ -12503,6 +12660,33 @@
             }
         }
 
+        /**
+         * Updates the displayed TextTrack to be sure it overlays the video when a either
+         * a {@link Player#texttrackchange} or a {@link Player#fullscreenchange} is fired.
+         */
+        updateDisplayOverlay() {
+            // inset-inline and inset-block are not supprted on old chrome, but these are
+            // only likely to be used on TV devices
+            if (!this.player_.videoHeight() || !window.CSS.supports('inset-inline: 10px')) {
+                return;
+            }
+            const playerWidth = this.player_.currentWidth();
+            const playerHeight = this.player_.currentHeight();
+            const playerAspectRatio = playerWidth / playerHeight;
+            const videoAspectRatio = this.player_.videoWidth() / this.player_.videoHeight();
+            let insetInlineMatch = 0;
+            let insetBlockMatch = 0;
+            if (Math.abs(playerAspectRatio - videoAspectRatio) > 0.1) {
+                if (playerAspectRatio > videoAspectRatio) {
+                    insetInlineMatch = Math.round((playerWidth - playerHeight * videoAspectRatio) / 2);
+                } else {
+                    insetBlockMatch = Math.round((playerHeight - playerWidth / videoAspectRatio) / 2);
+                }
+            }
+            tryUpdateStyle(this.el_, 'insetInline', getCSSPositionValue(insetInlineMatch));
+            tryUpdateStyle(this.el_, 'insetBlock', getCSSPositionValue(insetBlockMatch));
+        }
+
         /**
          * Style {@Link TextTrack} activeCues according to {@Link TextTrackSettings}.
          *
@@ -12689,11 +12873,13 @@
                 type: 'button'
             }, attributes);
             const el = createEl(tag, props, attributes);
-            el.appendChild(createEl('span', {
-                className: 'vjs-icon-placeholder'
-            }, {
-                'aria-hidden': true
-            }));
+            if (!this.player_.options_.experimentalSvgIcons) {
+                el.appendChild(createEl('span', {
+                    className: 'vjs-icon-placeholder'
+                }, {
+                    'aria-hidden': true
+                }));
+            }
             this.createControlTextEl(el);
             return el;
         }
@@ -12744,7 +12930,7 @@
          * This gets called when a `Button` has focus and `keydown` is triggered via a key
          * press.
          *
-         * @param {Event} event
+         * @param {KeyboardEvent} event
          *        The event that caused this function to get called.
          *
          * @listens keydown
@@ -12780,6 +12966,7 @@
         constructor(player, options) {
             super(player, options);
             this.mouseused_ = false;
+            this.setIcon('play');
             this.on('mousedown', e => this.handleMouseDown(e));
         }
 
@@ -12797,7 +12984,7 @@
          * This gets called when a `BigPlayButton` "clicked". See {@link ClickableComponent}
          * for more detailed information on what a click can be.
          *
-         * @param {KeyboardEvent} event
+         * @param {KeyboardEvent|MouseEvent|TouchEvent} event
          *        The `keydown`, `tap`, or `click` event that caused this function to be
          *        called.
          *
@@ -12808,7 +12995,7 @@
             const playPromise = this.player_.play();
 
             // exit early if clicked via the mouse
-            if (this.mouseused_ && event.clientX && event.clientY) {
+            if (this.mouseused_ && 'clientX' in event && 'clientY' in event) {
                 silencePromise(playPromise);
                 if (this.player_.tech(true)) {
                     this.player_.tech(true).focus();
@@ -12828,10 +13015,29 @@
                 this.setTimeout(playFocus, 1);
             }
         }
+
+        /**
+         * Event handler that is called when a `BigPlayButton` receives a
+         * `keydown` event.
+         *
+         * @param {KeyboardEvent} event
+         *        The `keydown` event that caused this function to be called.
+         *
+         * @listens keydown
+         */
         handleKeyDown(event) {
             this.mouseused_ = false;
             super.handleKeyDown(event);
         }
+
+        /**
+         * Handle `mousedown` events on the `BigPlayButton`.
+         *
+         * @param {MouseEvent} event
+         *        `mousedown` or `touchstart` event that triggered this function
+         *
+         * @listens mousedown
+         */
         handleMouseDown(event) {
             this.mouseused_ = true;
         }
@@ -12868,6 +13074,7 @@
          */
         constructor(player, options) {
             super(player, options);
+            this.setIcon('cancel');
             this.controlText(options && options.controlText || this.localize('Close'));
         }
 
@@ -12916,7 +13123,7 @@
          *
          * By default, if the key is Esc, it will trigger a `click` event.
          *
-         * @param {Event} event
+         * @param {KeyboardEvent} event
          *        The `keydown` event that caused this function to be called.
          *
          * @listens keydown
@@ -12959,6 +13166,7 @@
 
             // show or hide replay icon
             options.replay = options.replay === undefined || options.replay;
+            this.setIcon('play');
             this.on(player, 'play', e => this.handlePlay(e));
             this.on(player, 'pause', e => this.handlePause(e));
             if (options.replay) {
@@ -13025,6 +13233,7 @@
             this.removeClass('vjs-ended', 'vjs-paused');
             this.addClass('vjs-playing');
             // change the button text to "Pause"
+            this.setIcon('pause');
             this.controlText('Pause');
         }
 
@@ -13040,6 +13249,7 @@
             this.removeClass('vjs-playing');
             this.addClass('vjs-paused');
             // change the button text to "Play"
+            this.setIcon('play');
             this.controlText('Play');
         }
 
@@ -13055,6 +13265,7 @@
             this.removeClass('vjs-playing');
             this.addClass('vjs-ended');
             // change the button text to "Replay"
+            this.setIcon('replay');
             this.controlText('Replay');
 
             // on the next seek remove the replay button
@@ -13092,7 +13303,7 @@
          */
         constructor(player, options) {
             super(player, options);
-            this.on(player, ['timeupdate', 'ended'], e => this.updateContent(e));
+            this.on(player, ['timeupdate', 'ended', 'seeking'], e => this.update(e));
             this.updateTextNode_();
         }
 
@@ -13132,6 +13343,19 @@
             super.dispose();
         }
 
+        /**
+         * Updates the displayed time according to the `updateContent` function which is defined in the child class.
+         *
+         * @param {Event} [event]
+         *          The `timeupdate`, `ended` or `seeking` (if enableSmoothSeeking is true) event that caused this function to be called.
+         */
+        update(event) {
+            if (!this.player_.options_.enableSmoothSeeking && event.type === 'seeking') {
+                return;
+            }
+            this.updateContent(event);
+        }
+
         /**
          * Updates the time display text node with a new time
          *
@@ -13587,6 +13811,7 @@
             const el = super.createEl('button', {
                 className: 'vjs-seek-to-live-control vjs-control'
             });
+            this.setIcon('circle', el);
             this.textEl_ = createEl('span', {
                 className: 'vjs-seek-to-live-text',
                 textContent: this.localize('LIVE')
@@ -14293,6 +14518,7 @@
          */
         constructor(player, options) {
             super(player, options);
+            this.setIcon('circle');
             this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);
         }
 
@@ -14644,7 +14870,7 @@
          * @listens mousemove
          */
         handleMouseMove(event, mouseDown = false) {
-            if (!isSingleLeftClick(event)) {
+            if (!isSingleLeftClick(event) || isNaN(this.player_.duration())) {
                 return;
             }
             if (!mouseDown && !this.player_.scrubbing()) {
@@ -14690,6 +14916,9 @@
 
             // Set new time (tell player to seek to new time)
             this.userSeek_(newTime);
+            if (this.player_.options_.enableSmoothSeeking) {
+                this.update();
+            }
         }
         enable() {
             super.enable();
@@ -15103,20 +15332,10 @@
          */
         constructor(player, options) {
             super(player, options);
+            this.setIcon('picture-in-picture-enter');
             this.on(player, ['enterpictureinpicture', 'leavepictureinpicture'], e => this.handlePictureInPictureChange(e));
             this.on(player, ['disablepictureinpicturechanged', 'loadedmetadata'], e => this.handlePictureInPictureEnabledChange(e));
-            this.on(player, ['loadedmetadata', 'audioonlymodechange', 'audiopostermodechange'], () => {
-                // This audio detection will not detect HLS or DASH audio-only streams because there was no reliable way to detect them at the time
-                const isSourceAudio = player.currentType().substring(0, 5) === 'audio';
-                if (isSourceAudio || player.audioPosterMode() || player.audioOnlyMode()) {
-                    if (player.isInPictureInPicture()) {
-                        player.exitPictureInPicture();
-                    }
-                    this.hide();
-                } else {
-                    this.show();
-                }
-            });
+            this.on(player, ['loadedmetadata', 'audioonlymodechange', 'audiopostermodechange'], () => this.handlePictureInPictureAudioModeChange());
 
             // TODO: Deactivate button on player emptied event.
             this.disable();
@@ -15129,7 +15348,25 @@
          *         The DOM `className` for this object.
          */
         buildCSSClass() {
-            return `vjs-picture-in-picture-control ${super.buildCSSClass()}`;
+            return `vjs-picture-in-picture-control vjs-hidden ${super.buildCSSClass()}`;
+        }
+
+        /**
+         * Displays or hides the button depending on the audio mode detection.
+         * Exits picture-in-picture if it is enabled when switching to audio mode.
+         */
+        handlePictureInPictureAudioModeChange() {
+            // This audio detection will not detect HLS or DASH audio-only streams because there was no reliable way to detect them at the time
+            const isSourceAudio = this.player_.currentType().substring(0, 5) === 'audio';
+            const isAudioMode = isSourceAudio || this.player_.audioPosterMode() || this.player_.audioOnlyMode();
+            if (!isAudioMode) {
+                this.show();
+                return;
+            }
+            if (this.player_.isInPictureInPicture()) {
+                this.player_.exitPictureInPicture();
+            }
+            this.hide();
         }
 
         /**
@@ -15161,8 +15398,10 @@
          */
         handlePictureInPictureChange(event) {
             if (this.player_.isInPictureInPicture()) {
+                this.setIcon('picture-in-picture-exit');
                 this.controlText('Exit Picture-in-Picture');
             } else {
+                this.setIcon('picture-in-picture-enter');
                 this.controlText('Picture-in-Picture');
             }
             this.handlePictureInPictureEnabledChange();
@@ -15186,6 +15425,18 @@
                 this.player_.exitPictureInPicture();
             }
         }
+
+        /**
+         * Show the `Component`s element if it is hidden by removing the
+         * 'vjs-hidden' class name from it only in browsers that support the Picture-in-Picture API.
+         */
+        show() {
+            // Does not allow to display the pictureInPictureToggle in browsers that do not support the Picture-in-Picture API, e.g. Firefox.
+            if (typeof document.exitPictureInPicture !== 'function') {
+                return;
+            }
+            super.show();
+        }
     }
 
     /**
@@ -15218,6 +15469,7 @@
          */
         constructor(player, options) {
             super(player, options);
+            this.setIcon('fullscreen-enter');
             this.on(player, 'fullscreenchange', e => this.handleFullscreenChange(e));
             if (document[player.fsApi_.fullscreenEnabled] === false) {
                 this.disable();
@@ -15246,8 +15498,10 @@
         handleFullscreenChange(event) {
             if (this.player_.isFullscreen()) {
                 this.controlText('Exit Fullscreen');
+                this.setIcon('fullscreen-exit');
             } else {
                 this.controlText('Fullscreen');
+                this.setIcon('fullscreen-enter');
             }
         }
 
@@ -15326,6 +15580,7 @@
             const el = super.createEl('div', {
                 className: 'vjs-volume-level'
             });
+            this.setIcon('circle', el);
             el.appendChild(super.createEl('span', {
                 className: 'vjs-control-text'
             }));
@@ -15965,6 +16220,7 @@
         updateIcon_() {
             const vol = this.player_.volume();
             let level = 3;
+            this.setIcon('volume-high');
 
             // in iOS when a player is loaded with muted attribute
             // and volume is changed with a native mute button
@@ -15973,10 +16229,13 @@
                 this.player_.muted(this.player_.tech_.el_.muted);
             }
             if (vol === 0 || this.player_.muted()) {
+                this.setIcon('volume-mute');
                 level = 0;
             } else if (vol < 0.33) {
+                this.setIcon('volume-low');
                 level = 1;
             } else if (vol < 0.67) {
+                this.setIcon('volume-medium');
                 level = 2;
             }
             removeClass(this.el_, [0, 1, 2, 3].reduce((str, i) => str + `${i ? ' ' : ''}vjs-vol-${i}`, ''));
@@ -16209,6 +16468,7 @@
             this.validOptions = [5, 10, 30];
             this.skipTime = this.getSkipForwardTime();
             if (this.skipTime && this.validOptions.includes(this.skipTime)) {
+                this.setIcon(`forward-${this.skipTime}`);
                 this.controlText(this.localize('Skip forward {1} seconds', [this.skipTime]));
                 this.show();
             } else {
@@ -16235,6 +16495,9 @@
          *        to be called
          */
         handleClick(event) {
+            if (isNaN(this.player_.duration())) {
+                return;
+            }
             const currentVideoTime = this.player_.currentTime();
             const liveTracker = this.player_.liveTracker;
             const duration = liveTracker && liveTracker.isLive() ? liveTracker.seekableEnd() : this.player_.duration();
@@ -16254,6 +16517,7 @@
             this.controlText(this.localize('Skip forward {1} seconds', [this.skipTime]));
         }
     }
+    SkipForward.prototype.controlText_ = 'Skip Forward';
     Component$1.registerComponent('SkipForward', SkipForward);
 
     /**
@@ -16270,6 +16534,7 @@
             this.validOptions = [5, 10, 30];
             this.skipTime = this.getSkipBackwardTime();
             if (this.skipTime && this.validOptions.includes(this.skipTime)) {
+                this.setIcon(`replay-${this.skipTime}`);
                 this.controlText(this.localize('Skip backward {1} seconds', [this.skipTime]));
                 this.show();
             } else {
@@ -16502,7 +16767,7 @@
         /**
          * Handle a `keydown` event on this menu. This listener is added in the constructor.
          *
-         * @param {Event} event
+         * @param {KeyboardEvent} event
          *        A `keydown` event that happened on the menu.
          *
          * @listens keydown
@@ -16706,6 +16971,17 @@
             }, {});
         }
 
+        /**
+         * Overwrites the `setIcon` method from `Component`.
+         * In this case, we want the icon to be appended to the menuButton.
+         *
+         * @param {string} name
+         *         The icon name to be added.
+         */
+        setIcon(name) {
+            super.setIcon(name, this.menuButton_.el_);
+        }
+
         /**
          * Allow sub components to stack CSS class names for the wrapper element
          *
@@ -17070,10 +17346,17 @@
             }, props), attrs);
 
             // swap icon with menu item text.
-            el.replaceChild(createEl('span', {
+            const menuItemEl = createEl('span', {
                 className: 'vjs-menu-item-text',
                 textContent: this.localize(this.options_.label)
-            }), el.querySelector('.vjs-icon-placeholder'));
+            });
+
+            // If using SVG icons, the element with vjs-icon-placeholder will be added separately.
+            if (this.player_.options_.experimentalSvgIcons) {
+                el.appendChild(menuItemEl);
+            } else {
+                el.replaceChild(menuItemEl, el.querySelector('.vjs-icon-placeholder'));
+            }
             return el;
         }
 
@@ -17081,7 +17364,7 @@
          * Ignore keys which are used by the menu, but pass any other ones up. See
          * {@link ClickableComponent#handleKeyDown} for instances where this is called.
          *
-         * @param {Event} event
+         * @param {KeyboardEvent} event
          *        The `keydown` event that caused this function to be called.
          *
          * @listens keydown
@@ -17297,7 +17580,7 @@
      */
 
     /**
-     * A special menu item for turning of a specific type of text track
+     * A special menu item for turning off a specific type of text track
      *
      * @extends TextTrackMenuItem
      */
@@ -17542,6 +17825,7 @@
          */
         constructor(player, options, ready) {
             super(player, options, ready);
+            this.setIcon('chapters');
             this.selectCurrentItem_ = () => {
                 this.items.forEach(item => {
                     item.selected(this.track_.activeCues[0] === item.cue);
@@ -17733,6 +18017,7 @@
          */
         constructor(player, options, ready) {
             super(player, options, ready);
+            this.setIcon('audio-description');
             const tracks = player.textTracks();
             const changeHandler = bind_(this, this.handleTracksChange);
             tracks.addEventListener('change', changeHandler);
@@ -17825,6 +18110,7 @@
          */
         constructor(player, options, ready) {
             super(player, options, ready);
+            this.setIcon('subtitles');
         }
 
         /**
@@ -17944,6 +18230,7 @@
          */
         constructor(player, options, ready) {
             super(player, options, ready);
+            this.setIcon('captions');
         }
 
         /**
@@ -18009,11 +18296,15 @@
             const el = super.createEl(type, props, attrs);
             const parentSpan = el.querySelector('.vjs-menu-item-text');
             if (this.options_.track.kind === 'captions') {
-                parentSpan.appendChild(createEl('span', {
-                    className: 'vjs-icon-placeholder'
-                }, {
-                    'aria-hidden': true
-                }));
+                if (this.player_.options_.experimentalSvgIcons) {
+                    this.setIcon('captions', el);
+                } else {
+                    parentSpan.appendChild(createEl('span', {
+                        className: 'vjs-icon-placeholder'
+                    }, {
+                        'aria-hidden': true
+                    }));
+                }
                 parentSpan.appendChild(createEl('span', {
                     className: 'vjs-control-text',
                     // space added as the text will visually flow with the
@@ -18054,8 +18345,10 @@
             // Although North America uses "captions" in most cases for
             // "captions and subtitles" other locales use "subtitles"
             this.label_ = 'subtitles';
+            this.setIcon('subtitles');
             if (['en', 'en-us', 'en-ca', 'fr-ca'].indexOf(this.player_.language_) > -1) {
                 this.label_ = 'captions';
+                this.setIcon('captions');
             }
             this.menuButton_.controlText(toTitleCase$1(this.label_));
         }
@@ -18150,7 +18443,7 @@
         createEl(type, props, attrs) {
             const el = super.createEl(type, props, attrs);
             const parentSpan = el.querySelector('.vjs-menu-item-text');
-            if (this.options_.track.kind === 'main-desc') {
+            if (['main-desc', 'description'].indexOf(this.options_.track.kind) >= 0) {
                 parentSpan.appendChild(createEl('span', {
                     className: 'vjs-icon-placeholder'
                 }, {
@@ -18233,6 +18526,7 @@
         constructor(player, options = {}) {
             options.tracks = player.audioTracks();
             super(player, options);
+            this.setIcon('audio');
         }
 
         /**
@@ -18612,11 +18906,8 @@
      * @private
      */
     ControlBar.prototype.options_ = {
-        children: ['playToggle', 'skipBackward', 'skipForward', 'volumePanel', 'currentTimeDisplay', 'timeDivider', 'durationDisplay', 'progressControl', 'liveDisplay', 'seekToLive', 'remainingTimeDisplay', 'customControlSpacer', 'playbackRateMenuButton', 'chaptersButton', 'descriptionsButton', 'subsCapsButton', 'audioTrackButton', 'fullscreenToggle']
+        children: ['playToggle', 'skipBackward', 'skipForward', 'volumePanel', 'currentTimeDisplay', 'timeDivider', 'durationDisplay', 'progressControl', 'liveDisplay', 'seekToLive', 'remainingTimeDisplay', 'customControlSpacer', 'playbackRateMenuButton', 'chaptersButton', 'descriptionsButton', 'subsCapsButton', 'audioTrackButton', 'pictureInPictureToggle', 'fullscreenToggle']
     };
-    if ('exitPictureInPicture' in document) {
-        ControlBar.prototype.options_.children.splice(ControlBar.prototype.options_.children.length - 1, 0, 'pictureInPictureToggle');
-    }
     Component$1.registerComponent('ControlBar', ControlBar);
 
     /**
@@ -18641,7 +18932,10 @@
          */
         constructor(player, options) {
             super(player, options);
-            this.on(player, 'error', e => this.open(e));
+            this.on(player, 'error', e => {
+                this.close();
+                this.open(e);
+            });
         }
 
         /**
@@ -18731,7 +19025,7 @@
             selector: '.vjs-edge-style > select',
             id: '%s',
             label: 'Text Edge Style',
-            options: [['none', 'None'], ['raised', 'Raised'], ['depressed', 'Depressed'], ['uniform', 'Uniform'], ['dropshadow', 'Dropshadow']]
+            options: [['none', 'None'], ['raised', 'Raised'], ['depressed', 'Depressed'], ['uniform', 'Uniform'], ['dropshadow', 'Drop shadow']]
         },
         fontFamily: {
             selector: '.vjs-font-family > select',
@@ -18902,6 +19196,12 @@
          * @param {string} key
          *        Configuration key to use during creation.
          *
+         * @param {string} [legendId]
+         *        Id of associated <legend>.
+         *
+         * @param {string} [type=label]
+         *        Type of labelling element, `label` or `legend`
+         *
          * @return {string}
          *         An HTML string.
          *
@@ -18911,7 +19211,8 @@
             const config = selectConfigs[key];
             const id = config.id.replace('%s', this.id_);
             const selectLabelledbyIds = [legendId, id].join(' ').trim();
-            return [`<${type} id="${id}" class="${type === 'label' ? 'vjs-label' : ''}">`, this.localize(config.label), `</${type}>`, `<select aria-labelledby="${selectLabelledbyIds}">`].concat(config.options.map(o => {
+            const guid = `vjs_select_${newGUID()}`;
+            return [`<${type} id="${id}"${type === 'label' ? ` for="${guid}" class="vjs-label"` : ''}>`, this.localize(config.label), `</${type}>`, `<select aria-labelledby="${selectLabelledbyIds}" id="${guid}">`].concat(config.options.map(o => {
                 const optionId = id + '-' + o[1].replace(/\W+/g, '');
                 return [`<option id="${optionId}" value="${o[0]}" `, `aria-labelledby="${selectLabelledbyIds} ${optionId}">`, this.localize(o[1]), '</option>'].join('');
             })).concat('</select>').join('');
@@ -19640,7 +19941,7 @@
             };
             return createEl('div', {
                 className: 'vjs-title-bar'
-            }, {}, Object.values(this.els));
+            }, {}, values$1(this.els));
         }
 
         /**
@@ -22132,8 +22433,8 @@
      *
      * After an instance has been created it can be accessed globally in three ways:
      * 1. By calling `videojs.getPlayer('example_video_1');`
-     * 2. By calling `videojs('example_video_1');` (not recomended)
-     * 2. By using it directly via  `videojs.players.example_video_1;`
+     * 2. By calling `videojs('example_video_1');` (not recommended)
+     * 2. By using it directly via `videojs.players.example_video_1;`
      *
      * @extends Component
      * @global
@@ -22153,6 +22454,7 @@
          */
         constructor(tag, options, ready) {
             // Make sure tag ID exists
+            // also here.. probably better
             tag.id = tag.id || options.id || `vjs_video_${newGUID()}`;
 
             // Set Options
@@ -22269,9 +22571,11 @@
             this.resetCache_();
 
             // Set poster
+            /** @type string */
             this.poster_ = options.poster || '';
 
             // Set controls
+            /** @type {boolean} */
             this.controls_ = !!options.controls;
 
             // Original tag settings stored in options
@@ -22346,6 +22650,21 @@
             this.options_.playerOptions = playerOptionsCopy;
             this.middleware_ = [];
             this.playbackRates(options.playbackRates);
+            if (options.experimentalSvgIcons) {
+                // Add SVG Sprite to the DOM
+                const parser = new window.DOMParser();
+                const parsedSVG = parser.parseFromString(icons, 'image/svg+xml');
+                const errorNode = parsedSVG.querySelector('parsererror');
+                if (errorNode) {
+                    log$1.warn('Failed to load SVG Icons. Falling back to Font Icons.');
+                    this.options_.experimentalSvgIcons = null;
+                } else {
+                    const sprite = parsedSVG.documentElement;
+                    sprite.style.display = 'none';
+                    this.el_.appendChild(sprite);
+                    this.addClass('vjs-svg-icons-enabled');
+                }
+            }
             this.initChildren();
 
             // Set isAudio based on whether or not an audio tag was used
@@ -22658,11 +22977,12 @@
          * A getter/setter for the `Player`'s width. Returns the player's configured value.
          * To get the current width use `currentWidth()`.
          *
-         * @param {number} [value]
-         *        The value to set the `Player`'s width to.
+         * @param {number|string} [value]
+         *        CSS value to set the `Player`'s width to.
          *
-         * @return {number}
-         *         The current width of the `Player` when getting.
+         * @return {number|undefined}
+         *         - The current width of the `Player` when getting.
+         *         - Nothing when setting
          */
         width(value) {
             return this.dimension('width', value);
@@ -22672,11 +22992,12 @@
          * A getter/setter for the `Player`'s height. Returns the player's configured value.
          * To get the current height use `currentheight()`.
          *
-         * @param {number} [value]
-         *        The value to set the `Player`'s height to.
+         * @param {number|string} [value]
+         *        CSS value to set the `Player`'s height to.
          *
-         * @return {number}
-         *         The current height of the `Player` when getting.
+         * @return {number|undefined}
+         *         - The current height of the `Player` when getting.
+         *         - Nothing when setting
          */
         height(value) {
             return this.dimension('height', value);
@@ -22690,7 +23011,7 @@
          *        - 'width'
          *        - 'height'
          *
-         * @param {number} [value]
+         * @param {number|string} [value]
          *        Value for dimension specified in the first argument.
          *
          * @return {number}
@@ -23067,6 +23388,26 @@
             return this.tech_;
         }
 
+        /**
+         * An object that contains Video.js version.
+         *
+         * @typedef {Object} PlayerVersion
+         *
+         * @property {string} 'video.js' - Video.js version
+         */
+
+        /**
+         * Returns an object with Video.js version.
+         *
+         * @return {PlayerVersion}
+         *          An object with Video.js version.
+         */
+        version() {
+            return {
+                'video.js': version$5
+            };
+        }
+
         /**
          * Set up click and touch listeners for the playback element
          *
@@ -23367,7 +23708,7 @@
                         if (e.type === 'sourceset') {
                             return;
                         }
-                        const techSrc = this.techGet('currentSrc');
+                        const techSrc = this.techGet_('currentSrc');
                         this.lastSource_.tech = techSrc;
                         this.updateSourceCaches_(techSrc);
                     });
@@ -23775,8 +24116,6 @@
             let isFs = document[this.fsApi_.fullscreenElement] === el;
             if (!isFs && el.matches) {
                 isFs = el.matches(':' + this.fsApi_.fullscreen);
-            } else if (!isFs && el.msMatchesSelector) {
-                isFs = el.msMatchesSelector(':' + this.fsApi_.fullscreen);
             }
             this.isFullscreen(isFs);
         }
@@ -23854,7 +24193,9 @@
          */
         handleTechError_() {
             const error = this.tech_.error();
-            this.error(error);
+            if (error) {
+                this.error(error);
+            }
         }
 
         /**
@@ -23924,7 +24265,7 @@
          * @param {string} [method]
          *        the method to call
          *
-         * @param {Object} arg
+         * @param {Object} [arg]
          *        the argument to pass
          *
          * @private
@@ -24098,9 +24439,6 @@
 
         /**
          * Pause the video playback
-         *
-         * @return {Player}
-         *         A reference to the player object this function was called on
          */
         pause() {
             this.techCall_('pause');
@@ -24131,15 +24469,16 @@
         }
 
         /**
-         * Returns whether or not the user is "scrubbing". Scrubbing is
+         * Sets or returns whether or not the user is "scrubbing". Scrubbing is
          * when the user has clicked the progress bar handle and is
          * dragging it along the progress bar.
          *
          * @param {boolean} [isScrubbing]
          *        whether the user is or is not scrubbing
          *
-         * @return {boolean}
-         *         The value of scrubbing when getting
+         * @return {boolean|undefined}
+         *         - The value of scrubbing when getting
+         *         - Nothing when setting
          */
         scrubbing(isScrubbing) {
             if (typeof isScrubbing === 'undefined') {
@@ -24160,33 +24499,35 @@
          * @param {number|string} [seconds]
          *        The time to seek to in seconds
          *
-         * @return {number}
+         * @return {number|undefined}
          *         - the current time in seconds when getting
+         *         - Nothing when setting
          */
         currentTime(seconds) {
-            if (typeof seconds !== 'undefined') {
-                if (seconds < 0) {
-                    seconds = 0;
-                }
-                if (!this.isReady_ || this.changingSrc_ || !this.tech_ || !this.tech_.isReady_) {
-                    this.cache_.initTime = seconds;
-                    this.off('canplay', this.boundApplyInitTime_);
-                    this.one('canplay', this.boundApplyInitTime_);
-                    return;
-                }
-                this.techCall_('setCurrentTime', seconds);
-                this.cache_.initTime = 0;
+            if (seconds === undefined) {
+                // cache last currentTime and return. default to 0 seconds
+                //
+                // Caching the currentTime is meant to prevent a massive amount of reads on the tech's
+                // currentTime when scrubbing, but may not provide much performance benefit after all.
+                // Should be tested. Also something has to read the actual current time or the cache will
+                // never get updated.
+                this.cache_.currentTime = this.techGet_('currentTime') || 0;
+                return this.cache_.currentTime;
+            }
+            if (seconds < 0) {
+                seconds = 0;
+            }
+            if (!this.isReady_ || this.changingSrc_ || !this.tech_ || !this.tech_.isReady_) {
+                this.cache_.initTime = seconds;
+                this.off('canplay', this.boundApplyInitTime_);
+                this.one('canplay', this.boundApplyInitTime_);
                 return;
             }
-
-            // cache last currentTime and return. default to 0 seconds
-            //
-            // Caching the currentTime is meant to prevent a massive amount of reads on the tech's
-            // currentTime when scrubbing, but may not provide much performance benefit after all.
-            // Should be tested. Also something has to read the actual current time or the cache will
-            // never get updated.
-            this.cache_.currentTime = this.techGet_('currentTime') || 0;
-            return this.cache_.currentTime;
+            this.techCall_('setCurrentTime', seconds);
+            this.cache_.initTime = 0;
+            if (isFinite(seconds)) {
+                this.cache_.currentTime = Number(seconds);
+            }
         }
 
         /**
@@ -24211,8 +24552,9 @@
          * @param {number} [seconds]
          *        The duration of the video to set in seconds
          *
-         * @return {number}
+         * @return {number|undefined}
          *         - The duration of the video in seconds when getting
+         *         - Nothing when setting
          */
         duration(seconds) {
             if (seconds === undefined) {
@@ -24289,6 +24631,90 @@
             return buffered;
         }
 
+        /**
+         * Get the TimeRanges of the media that are currently available
+         * for seeking to.
+         *
+         * @see [Seekable Spec]{@link https://html.spec.whatwg.org/multipage/media.html#dom-media-seekable}
+         *
+         * @return { import('./utils/time').TimeRange }
+         *         A mock {@link TimeRanges} object (following HTML spec)
+         */
+        seekable() {
+            let seekable = this.techGet_('seekable');
+            if (!seekable || !seekable.length) {
+                seekable = createTimeRanges$1(0, 0);
+            }
+            return seekable;
+        }
+
+        /**
+         * Returns whether the player is in the "seeking" state.
+         *
+         * @return {boolean} True if the player is in the seeking state, false if not.
+         */
+        seeking() {
+            return this.techGet_('seeking');
+        }
+
+        /**
+         * Returns whether the player is in the "ended" state.
+         *
+         * @return {boolean} True if the player is in the ended state, false if not.
+         */
+        ended() {
+            return this.techGet_('ended');
+        }
+
+        /**
+         * Returns the current state of network activity for the element, from
+         * the codes in the list below.
+         * - NETWORK_EMPTY (numeric value 0)
+         *   The element has not yet been initialised. All attributes are in
+         *   their initial states.
+         * - NETWORK_IDLE (numeric value 1)
+         *   The element's resource selection algorithm is active and has
+         *   selected a resource, but it is not actually using the network at
+         *   this time.
+         * - NETWORK_LOADING (numeric value 2)
+         *   The user agent is actively trying to download data.
+         * - NETWORK_NO_SOURCE (numeric value 3)
+         *   The element's resource selection algorithm is active, but it has
+         *   not yet found a resource to use.
+         *
+         * @see https://html.spec.whatwg.org/multipage/embedded-content.html#network-states
+         * @return {number} the current network activity state
+         */
+        networkState() {
+            return this.techGet_('networkState');
+        }
+
+        /**
+         * Returns a value that expresses the current state of the element
+         * with respect to rendering the current playback position, from the
+         * codes in the list below.
+         * - HAVE_NOTHING (numeric value 0)
+         *   No information regarding the media resource is available.
+         * - HAVE_METADATA (numeric value 1)
+         *   Enough of the resource has been obtained that the duration of the
+         *   resource is available.
+         * - HAVE_CURRENT_DATA (numeric value 2)
+         *   Data for the immediate current playback position is available.
+         * - HAVE_FUTURE_DATA (numeric value 3)
+         *   Data for the immediate current playback position is available, as
+         *   well as enough data for the user agent to advance the current
+         *   playback position in the direction of playback.
+         * - HAVE_ENOUGH_DATA (numeric value 4)
+         *   The user agent estimates that enough data is available for
+         *   playback to proceed uninterrupted.
+         *
+         * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-readystate
+         * @return {number} the current playback rendering state
+         */
+        readyState() {
+            return this.techGet_('readyState');
+        }
+
         /**
          * Get the percent (as a decimal) of the video that's been downloaded.
          * This method is not a part of the native HTML video API.
@@ -24327,14 +24753,14 @@
          *         - 1.0 is 100%/full
          *         - 0.5 is half volume or 50%
          *
-         * @return {number}
+         * @return {number|undefined}
          *         The current volume as a percent when getting
          */
         volume(percentAsDecimal) {
             let vol;
             if (percentAsDecimal !== undefined) {
                 // Force value to between 0 and 1
-                vol = Math.max(0, Math.min(1, parseFloat(percentAsDecimal)));
+                vol = Math.max(0, Math.min(1, percentAsDecimal));
                 this.cache_.volume = vol;
                 this.techCall_('setVolume', vol);
                 if (vol > 0) {
@@ -24355,9 +24781,10 @@
          *        - true to mute
          *        - false to unmute
          *
-         * @return {boolean}
+         * @return {boolean|undefined}
          *         - true if mute is on and getting
          *         - false if mute is off and getting
+         *         - nothing if setting
          */
         muted(muted) {
             if (muted !== undefined) {
@@ -24388,14 +24815,14 @@
          *        - true to mute
          *        - false to unmute
          *
-         * @return {boolean|Player}
+         * @return {boolean|undefined}
          *         - true if defaultMuted is on and getting
          *         - false if defaultMuted is off and getting
-         *         - A reference to the current player when setting
+         *         - Nothing when setting
          */
         defaultMuted(defaultMuted) {
             if (defaultMuted !== undefined) {
-                return this.techCall_('setDefaultMuted', defaultMuted);
+                this.techCall_('setDefaultMuted', defaultMuted);
             }
             return this.techGet_('defaultMuted') || false;
         }
@@ -24409,8 +24836,9 @@
          *         - 1.0 is 100%/full
          *         - 0.5 is half volume or 50%
          *
-         * @return {number}
-         *         the current value of lastVolume as a percent when getting
+         * @return {number|undefined}
+         *         - The current value of lastVolume as a percent when getting
+         *         - Nothing when setting
          *
          * @private
          */
@@ -24444,9 +24872,10 @@
          * @param  {boolean} [isFS]
          *         Set the players current fullscreen state
          *
-         * @return {boolean}
+         * @return {boolean|undefined}
          *         - true if fullscreen is on and getting
          *         - false if fullscreen is off and getting
+         *         - Nothing when setting
          */
         isFullscreen(isFS) {
             if (isFS !== undefined) {
@@ -24670,9 +25099,9 @@
         }
 
         /**
-         * Disable Picture-in-Picture mode.
+         * Get or set disable Picture-in-Picture mode.
          *
-         * @param {boolean} value
+         * @param {boolean} [value]
          *                  - true will disable Picture-in-Picture mode
          *                  - false will enable Picture-in-Picture mode
          */
@@ -24692,9 +25121,10 @@
          * @param  {boolean} [isPiP]
          *         Set the players current Picture-in-Picture state
          *
-         * @return {boolean}
+         * @return {boolean|undefined}
          *         - true if Picture-in-Picture is on and getting
          *         - false if Picture-in-Picture is off and getting
+         *         - nothing if setting
          */
         isInPictureInPicture(isPiP) {
             if (isPiP !== undefined) {
@@ -24740,19 +25170,20 @@
                 }, {}, this.localize('Playing in picture-in-picture')));
                 return window.documentPictureInPicture.requestWindow({
                     // The aspect ratio won't be correct, Chrome bug https://crbug.com/1407629
-                    initialAspectRatio: this.videoWidth() / this.videoHeight(),
-                    copyStyleSheets: true
+                    width: this.videoWidth(),
+                    height: this.videoHeight()
                 }).then(pipWindow => {
+                    copyStyleSheetsToWindow(pipWindow);
                     this.el_.parentNode.insertBefore(pipContainer, this.el_);
-                    pipWindow.document.body.append(this.el_);
+                    pipWindow.document.body.appendChild(this.el_);
                     pipWindow.document.body.classList.add('vjs-pip-window');
                     this.player_.isInPictureInPicture(true);
                     this.player_.trigger('enterpictureinpicture');
 
                     // Listen for the PiP closing event to move the video back.
-                    pipWindow.addEventListener('unload', event => {
+                    pipWindow.addEventListener('pagehide', event => {
                         const pipVideo = event.target.querySelector('.video-js');
-                        pipContainer.replaceWith(pipVideo);
+                        pipContainer.parentNode.replaceChild(pipVideo, pipContainer);
                         this.player_.isInPictureInPicture(false);
                         this.player_.trigger('leavepictureinpicture');
                     });
@@ -24783,7 +25214,7 @@
          */
         exitPictureInPicture() {
             if (window.documentPictureInPicture && window.documentPictureInPicture.window) {
-                // With documentPictureInPicture, Player#leavepictureinpicture is fired in the unload handler
+                // With documentPictureInPicture, Player#leavepictureinpicture is fired in the pagehide handler
                 window.documentPictureInPicture.window.close();
                 return Promise.resolve();
             }
@@ -24804,7 +25235,7 @@
          * This allows player-wide hotkeys (either as defined below, or optionally
          * by an external function).
          *
-         * @param {Event} event
+         * @param {KeyboardEvent} event
          *        The `keydown` event that caused this function to be called.
          *
          * @listens keydown
@@ -25008,7 +25439,7 @@
          *        algorithms can take the `type` into account.
          *
          *        If not provided, this method acts as a getter.
-         * @param {boolean} isRetry
+         * @param {boolean} [isRetry]
          *        Indicates whether this is being called internally as a result of a retry
          *
          * @return {string|undefined}
@@ -25173,6 +25604,12 @@
          * Begin loading the src data.
          */
         load() {
+            // Workaround to use the load method with the VHS.
+            // Does not cover the case when the load method is called directly from the mediaElement.
+            if (this.tech_ && this.tech_.vhs) {
+                this.src(this.currentSource());
+                return;
+            }
             this.techCall_('load');
         }
 
@@ -25193,11 +25630,20 @@
             if (this.tech_) {
                 this.tech_.clearTracks('text');
             }
+            this.removeClass('vjs-playing');
+            this.addClass('vjs-paused');
             this.resetCache_();
             this.poster('');
             this.loadTech_(this.options_.techOrder[0], null);
             this.techCall_('reset');
             this.resetControlBarUI_();
+            this.error(null);
+            if (this.titleBar) {
+                this.titleBar.update({
+                    title: undefined,
+                    description: undefined
+                });
+            }
             if (isEvented(this)) {
                 this.trigger('playerreset');
             }
@@ -25313,12 +25759,12 @@
         /**
          * Get or set the preload attribute
          *
-         * @param {boolean} [value]
-         *        - true means that we should preload
-         *        - false means that we should not preload
+         * @param {'none'|'auto'|'metadata'} [value]
+         *        Preload mode to pass to tech
          *
-         * @return {string}
-         *         The preload attribute value when getting
+         * @return {string|undefined}
+         *         - The preload attribute value when getting
+         *         - Nothing when setting
          */
         preload(value) {
             if (value !== undefined) {
@@ -25334,7 +25780,7 @@
          * modify the attribute on the tech. When this is a string the attribute on
          * the tech will be removed and `Player` will handle autoplay on loadstarts.
          *
-         * @param {boolean|string} [value]
+         * @param {boolean|'play'|'muted'|'any'} [value]
          *        - true: autoplay using the browser behavior
          *        - false: do not autoplay
          *        - 'play': call play() on every loadstart
@@ -25342,8 +25788,9 @@
          *        - 'any': call play() on every loadstart. if that fails call muted() then play().
          *        - *: values other than those listed here will be set `autoplay` to true
          *
-         * @return {boolean|string}
-         *         The current value of autoplay when getting
+         * @return {boolean|string|undefined}
+         *         - The current value of autoplay when getting
+         *         - Nothing when setting
          */
         autoplay(value) {
             // getter usage
@@ -25388,9 +25835,9 @@
          *          which in most cases is inline. iOS Safari is a notable exception
          *          and plays fullscreen by default.
          *
-         * @return {string|Player}
+         * @return {string|undefined}
          *         - the current value of playsinline
-         *         - the player when setting
+         *         - Nothing when setting
          *
          * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}
          */
@@ -25398,7 +25845,6 @@
             if (value !== undefined) {
                 this.techCall_('setPlaysinline', value);
                 this.options_.playsinline = value;
-                return this;
             }
             return this.techGet_('playsinline');
         }
@@ -25410,8 +25856,9 @@
          *        - true means that we should loop the video
          *        - false means that we should not loop the video
          *
-         * @return {boolean}
-         *         The current value of loop when getting
+         * @return {boolean|undefined}
+         *         - The current value of loop when getting
+         *         - Nothing when setting
          */
         loop(value) {
             if (value !== undefined) {
@@ -25430,8 +25877,9 @@
          * @param {string} [src]
          *        Poster image source URL
          *
-         * @return {string}
-         *         The current value of poster when getting
+         * @return {string|undefined}
+         *         - The current value of poster when getting
+         *         - Nothing when setting
          */
         poster(src) {
             if (src === undefined) {
@@ -25498,8 +25946,9 @@
          *        - true to turn controls on
          *        - false to turn controls off
          *
-         * @return {boolean}
-         *         The current value of controls when getting
+         * @return {boolean|undefined}
+         *         - The current value of controls when getting
+         *         - Nothing when setting
          */
         controls(bool) {
             if (bool === undefined) {
@@ -25554,8 +26003,9 @@
          *        - true to turn native controls on
          *        - false to turn native controls off
          *
-         * @return {boolean}
-         *         The current value of native controls when getting
+         * @return {boolean|undefined}
+         *         - The current value of native controls when getting
+         *         - Nothing when setting
          */
         usingNativeControls(bool) {
             if (bool === undefined) {
@@ -25600,8 +26050,9 @@
          *         A MediaError or a string/number to be turned
          *         into a MediaError
          *
-         * @return {MediaError|null}
-         *         The current MediaError when getting (or null)
+         * @return {MediaError|null|undefined}
+         *         - The current MediaError when getting (or null)
+         *         - Nothing when setting
          */
         error(err) {
             if (err === undefined) {
@@ -25634,7 +26085,7 @@
 
             // restoring to default
             if (err === null) {
-                this.error_ = err;
+                this.error_ = null;
                 this.removeClass('vjs-error');
                 if (this.errorDisplay) {
                     this.errorDisplay.close();
@@ -25681,8 +26132,9 @@
          *        - true if the user is active
          *        - false if the user is inactive
          *
-         * @return {boolean}
-         *         The current value of userActive when getting
+         * @return {boolean|undefined}
+         *         - The current value of userActive when getting
+         *         - Nothing when setting
          */
         userActive(bool) {
             if (bool === undefined) {
@@ -25797,7 +26249,9 @@
             // then gets picked up by this loop
             // http://ejohn.org/blog/learning-from-twitter/
             let inactivityTimeout;
-            this.setInterval(function () {
+
+            /** @this Player */
+            const activityCheck = function () {
                 // Check to see if mouse/touch activity has happened
                 if (!this.userActivity_) {
                     return;
@@ -25826,7 +26280,8 @@
                         this.userActive(false);
                     }
                 }, timeout);
-            }, 250);
+            };
+            this.setInterval(activityCheck, 250);
         }
 
         /**
@@ -25839,8 +26294,9 @@
          * @param {number} [rate]
          *       New playback rate to set.
          *
-         * @return {number}
-         *         The current playback rate when getting or 1.0
+         * @return {number|undefined}
+         *         - The current playback rate when getting or 1.0
+         *         - Nothing when setting
          */
         playbackRate(rate) {
             if (rate !== undefined) {
@@ -25866,9 +26322,9 @@
          * @param {number} [rate]
          *       New default playback rate to set.
          *
-         * @return {number|Player}
+         * @return {number|undefined}
          *         - The default playback rate when getting or 1.0
-         *         - the player when setting
+         *         - Nothing when setting
          */
         defaultPlaybackRate(rate) {
             if (rate !== undefined) {
@@ -25883,12 +26339,13 @@
         /**
          * Gets or sets the audio flag
          *
-         * @param {boolean} bool
+         * @param {boolean} [bool]
          *        - true signals that this is an audio player
          *        - false signals that this is not an audio player
          *
-         * @return {boolean}
-         *         The current value of isAudio when getting
+         * @return {boolean|undefined}
+         *         - The current value of isAudio when getting
+         *         - Nothing when setting
          */
         isAudio(bool) {
             if (bool !== undefined) {
@@ -26131,7 +26588,7 @@
         }
 
         /**
-         * The player's language code.
+         * Set or get the player's language code.
          *
          * Changing the language will trigger
          * [languagechange]{@link Player#event:languagechange}
@@ -26144,8 +26601,9 @@
          * @param {string} [code]
          *        the language code to set the player to
          *
-         * @return {string}
-         *         The current language code when getting
+         * @return {string|undefined}
+         *         - The current language code when getting
+         *         - Nothing when setting
          */
         language(code) {
             if (code === undefined) {
@@ -26329,13 +26787,14 @@
          * Get or set a flag indicating whether or not this player should adjust
          * its UI based on its dimensions.
          *
-         * @param  {boolean} value
+         * @param  {boolean} [value]
          *         Should be `true` if the player should adjust its UI based on its
          *         dimensions; otherwise, should be `false`.
          *
-         * @return {boolean}
+         * @return {boolean|undefined}
          *         Will be `true` if this player should adjust its UI based on its
          *         dimensions; otherwise, will be `false`.
+         *         Nothing if setting
          */
         responsive(value) {
             // Used as a getter.
@@ -26448,6 +26907,7 @@
             if (!media || typeof media !== 'object') {
                 return;
             }
+            const crossOrigin = this.crossOrigin();
             this.reset();
 
             // Clone the media object so it cannot be mutated from outside.
@@ -26469,6 +26929,9 @@
                     type: getMimetype(poster)
                 }];
             }
+            if (crossOrigin) {
+                this.crossOrigin(crossOrigin);
+            }
             if (src) {
                 this.src(src);
             }
@@ -26580,6 +27043,7 @@
          * @param {boolean} enabled
          * @fires Player#debugon
          * @fires Player#debugoff
+         * @return {boolean|undefined}
          */
         debug(enabled) {
             if (enabled === undefined) {
@@ -26766,80 +27230,10 @@
         breakpoints: {},
         responsive: false,
         audioOnlyMode: false,
-        audioPosterMode: false
+        audioPosterMode: false,
+        // Default smooth seeking to false
+        enableSmoothSeeking: false
     };
-    [
-        /**
-         * Returns whether or not the player is in the "ended" state.
-         *
-         * @return {Boolean} True if the player is in the ended state, false if not.
-         * @method Player#ended
-         */
-        'ended',
-        /**
-         * Returns whether or not the player is in the "seeking" state.
-         *
-         * @return {Boolean} True if the player is in the seeking state, false if not.
-         * @method Player#seeking
-         */
-        'seeking',
-        /**
-         * Returns the TimeRanges of the media that are currently available
-         * for seeking to.
-         *
-         * @return {TimeRanges} the seekable intervals of the media timeline
-         * @method Player#seekable
-         */
-        'seekable',
-        /**
-         * Returns the current state of network activity for the element, from
-         * the codes in the list below.
-         * - NETWORK_EMPTY (numeric value 0)
-         *   The element has not yet been initialised. All attributes are in
-         *   their initial states.
-         * - NETWORK_IDLE (numeric value 1)
-         *   The element's resource selection algorithm is active and has
-         *   selected a resource, but it is not actually using the network at
-         *   this time.
-         * - NETWORK_LOADING (numeric value 2)
-         *   The user agent is actively trying to download data.
-         * - NETWORK_NO_SOURCE (numeric value 3)
-         *   The element's resource selection algorithm is active, but it has
-         *   not yet found a resource to use.
-         *
-         * @see https://html.spec.whatwg.org/multipage/embedded-content.html#network-states
-         * @return {number} the current network activity state
-         * @method Player#networkState
-         */
-        'networkState',
-        /**
-         * Returns a value that expresses the current state of the element
-         * with respect to rendering the current playback position, from the
-         * codes in the list below.
-         * - HAVE_NOTHING (numeric value 0)
-         *   No information regarding the media resource is available.
-         * - HAVE_METADATA (numeric value 1)
-         *   Enough of the resource has been obtained that the duration of the
-         *   resource is available.
-         * - HAVE_CURRENT_DATA (numeric value 2)
-         *   Data for the immediate current playback position is available.
-         * - HAVE_FUTURE_DATA (numeric value 3)
-         *   Data for the immediate current playback position is available, as
-         *   well as enough data for the user agent to advance the current
-         *   playback position in the direction of playback.
-         * - HAVE_ENOUGH_DATA (numeric value 4)
-         *   The user agent estimates that enough data is available for
-         *   playback to proceed uninterrupted.
-         *
-         * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-readystate
-         * @return {number} the current playback rendering state
-         * @method Player#readyState
-         */
-        'readyState'].forEach(function (fn) {
-        Player.prototype[fn] = function () {
-            return this.techGet_(fn);
-        };
-    });
     TECH_EVENTS_RETRIGGER.forEach(function (event) {
         Player.prototype[`handleTech${toTitleCase$1(event)}_`] = function () {
             return this.trigger(event);
@@ -26984,7 +27378,7 @@
      * @param  {Player} player
      *         A Video.js player instance.
      *
-     * @param  {Plugin~PluginEventHash} hash
+     * @param  {PluginEventHash} hash
      *         A plugin event hash.
      *
      * @param  {boolean} [before]
@@ -27137,7 +27531,7 @@
          * @param   {Object} [hash={}]
          *          An object to be used as event an event hash.
          *
-         * @return {Plugin~PluginEventHash}
+         * @return {PluginEventHash}
          *          An event hash object with provided properties mixed-in.
          */
         getEventHash(hash = {}) {
@@ -27156,7 +27550,7 @@
          *
          * @param   {Object} [hash={}]
          *          Additional data hash to merge with a
-         *          {@link Plugin~PluginEventHash|PluginEventHash}.
+         *          {@link PluginEventHash|PluginEventHash}.
          *
          * @return {boolean}
          *          Whether or not default was prevented.
@@ -27372,7 +27766,7 @@
      * Signals that a plugin is about to be set up on a player.
      *
      * @event    Player#beforepluginsetup
-     * @type     {Plugin~PluginEventHash}
+     * @type     {PluginEventHash}
      */
 
     /**
@@ -27380,14 +27774,14 @@
      * is the name of the plugin.
      *
      * @event    Player#beforepluginsetup:$name
-     * @type     {Plugin~PluginEventHash}
+     * @type     {PluginEventHash}
      */
 
     /**
      * Signals that a plugin has just been set up on a player.
      *
      * @event    Player#pluginsetup
-     * @type     {Plugin~PluginEventHash}
+     * @type     {PluginEventHash}
      */
 
     /**
@@ -27395,11 +27789,11 @@
      * is the name of the plugin.
      *
      * @event    Player#pluginsetup:$name
-     * @type     {Plugin~PluginEventHash}
+     * @type     {PluginEventHash}
      */
 
     /**
-     * @typedef  {Object} Plugin~PluginEventHash
+     * @typedef  {Object} PluginEventHash
      *
      * @property {string} instance
      *           For basic plugins, the return value of the plugin function. For
@@ -27572,7 +27966,11 @@
         // This will make sure that the element is indeed in the dom of that document.
         // Additionally, check that the document in question has a default view.
         // If the document is no longer attached to the dom, the defaultView of the document will be null.
-        if (!el.ownerDocument.defaultView || !el.ownerDocument.body.contains(el)) {
+        // If element is inside Shadow DOM (e.g. is part of a Custom element), ownerDocument.body
+        // always returns false. Instead, use the Shadow DOM root.
+        const inShadowDom = 'getRootNode' in el ? el.getRootNode() instanceof window.ShadowRoot : false;
+        const rootNode = inShadowDom ? el.getRootNode() : el.ownerDocument.body;
+        if (!el.ownerDocument.defaultView || !rootNode.contains(el)) {
             log$1.warn('The element supplied is not included in the DOM');
         }
         options = options || {};
@@ -27722,17 +28120,17 @@
      * @param {string} name
      *        The class name of the component
      *
-     * @param {Component} comp
+     * @param {typeof Component} comp
      *        The component class
      *
-     * @return {Component}
+     * @return {typeof Component}
      *         The newly registered component
      */
     videojs.registerComponent = (name, comp) => {
         if (Tech.isTech(comp)) {
             log$1.warn(`The ${name} tech was registered as a component. It should instead be registered using videojs.registerTech(name, tech)`);
         }
-        Component$1.registerComponent.call(Component$1, name, comp);
+        return Component$1.registerComponent.call(Component$1, name, comp);
     };
     videojs.getTech = Tech.getTech;
     videojs.registerTech = Tech.registerTech;
@@ -27809,8 +28207,10 @@
      * @param {string} name
      *        The plugin name
      *
-     * @param {Plugin|Function} plugin
+     * @param {typeof Plugin|Function} plugin
      *         The plugin sub-class or function
+     *
+     * @return {typeof Plugin|Function}
      */
     videojs.plugin = (name, plugin) => {
         log$1.warn('videojs.plugin() is deprecated; use videojs.registerPlugin() instead');
@@ -27992,7 +28392,7 @@
     videojs.url = Url;
 
     createCommonjsModule(function (module, exports) {
-        /*! @name videojs-contrib-quality-levels @version 3.0.0 @license Apache-2.0 */
+        /*! @name videojs-contrib-quality-levels @version 4.0.0 @license Apache-2.0 */
         (function (global, factory) {
             module.exports = factory(videojs) ;
         })(commonjsGlobal, function (videojs) {
@@ -28084,6 +28484,9 @@
              */
 
             class QualityLevelList extends videojs__default['default'].EventTarget {
+                /**
+                 * Creates a QualityLevelList.
+                 */
                 constructor() {
                     super();
                     let list = this; // eslint-disable-line
@@ -28114,6 +28517,7 @@
                             return list.levels_.length;
                         }
                     });
+                    list[Symbol.iterator] = () => list.levels_.values();
                     return list;
                 }
                 /**
@@ -28155,7 +28559,7 @@
                 /**
                  * Removes a quality level from the list.
                  *
-                 * @param {QualityLevel} remove QualityLevel to remove to the list.
+                 * @param {QualityLevel} qualityLevel The QualityLevel to remove from the list.
                  * @return {QualityLevel|null} the QualityLevel removed or null if nothing removed
                  * @method removeQualityLevel
                  */
@@ -28224,15 +28628,15 @@
             for (const event in QualityLevelList.prototype.allowedEvents_) {
                 QualityLevelList.prototype['on' + event] = null;
             }
-            var version = "3.0.0";
-            const registerPlugin = videojs__default['default'].registerPlugin || videojs__default['default'].plugin;
+            var version = "4.0.0";
+
             /**
              * Initialization function for the qualityLevels plugin. Sets up the QualityLevelList and
              * event handlers.
              *
              * @param {Player} player Player object.
              * @param {Object} options Plugin options object.
-             * @function initPlugin
+             * @return {QualityLevelList} a list of QualityLevels
              */
 
             const initPlugin = function (player, options) {
@@ -28257,14 +28661,14 @@
              * to you; if not, remove the wait for "ready"!
              *
              * @param {Object} options Plugin options object
-             * @function qualityLevels
+             * @return {QualityLevelList} a list of QualityLevels
              */
 
             const qualityLevels = function (options) {
-                return initPlugin(this, videojs__default['default'].mergeOptions({}, options));
+                return initPlugin(this, videojs__default['default'].obj.merge({}, options));
             }; // Register the plugin with video.js.
 
-            registerPlugin('qualityLevels', qualityLevels); // Include the version number.
+            videojs__default['default'].registerPlugin('qualityLevels', qualityLevels); // Include the version number.
 
             qualityLevels.VERSION = version;
             return qualityLevels;
@@ -28423,8 +28827,8 @@
         })();
     });
 
-    var DEFAULT_LOCATION$1 = 'http://example.com';
-    var resolveUrl$2 = function resolveUrl(baseUrl, relativeUrl) {
+    var DEFAULT_LOCATION = 'http://example.com';
+    var resolveUrl$1 = function resolveUrl(baseUrl, relativeUrl) {
         // return early if we don't need to resolve
         if (/^[a-z]+:/i.test(relativeUrl)) {
             return relativeUrl;
@@ -28442,7 +28846,7 @@
         var removeLocation = !window.location && !/\/\//i.test(baseUrl); // if the base URL is relative then combine with the current location
 
         if (nativeURL) {
-            baseUrl = new window.URL(baseUrl, window.location || DEFAULT_LOCATION$1);
+            baseUrl = new window.URL(baseUrl, window.location || DEFAULT_LOCATION);
         } else if (!/\/\//i.test(baseUrl)) {
             baseUrl = urlToolkit.buildAbsoluteURL(window.location && window.location.href || '', baseUrl);
         }
@@ -28452,7 +28856,7 @@
             // otherwise, return the url unmodified
 
             if (removeLocation) {
-                return newUrl.href.slice(DEFAULT_LOCATION$1.length);
+                return newUrl.href.slice(DEFAULT_LOCATION.length);
             } else if (protocolLess) {
                 return newUrl.href.slice(newUrl.protocol.length);
             }
@@ -28580,7 +28984,7 @@
         return array;
     }
 
-    /*! @name m3u8-parser @version 6.0.0 @license Apache-2.0 */
+    /*! @name m3u8-parser @version 7.1.0 @license Apache-2.0 */
 
     /**
      * @file m3u8/line-stream.js
@@ -29136,6 +29540,68 @@
                     });
                     this.trigger('data', event);
                     return;
+                }
+                match = /^#EXT-X-DATERANGE:(.*)$/.exec(newLine);
+                if (match && match[1]) {
+                    event = {
+                        type: 'tag',
+                        tagType: 'daterange'
+                    };
+                    event.attributes = parseAttributes$1(match[1]);
+                    ['ID', 'CLASS'].forEach(function (key) {
+                        if (event.attributes.hasOwnProperty(key)) {
+                            event.attributes[key] = String(event.attributes[key]);
+                        }
+                    });
+                    ['START-DATE', 'END-DATE'].forEach(function (key) {
+                        if (event.attributes.hasOwnProperty(key)) {
+                            event.attributes[key] = new Date(event.attributes[key]);
+                        }
+                    });
+                    ['DURATION', 'PLANNED-DURATION'].forEach(function (key) {
+                        if (event.attributes.hasOwnProperty(key)) {
+                            event.attributes[key] = parseFloat(event.attributes[key]);
+                        }
+                    });
+                    ['END-ON-NEXT'].forEach(function (key) {
+                        if (event.attributes.hasOwnProperty(key)) {
+                            event.attributes[key] = /YES/i.test(event.attributes[key]);
+                        }
+                    });
+                    ['SCTE35-CMD', ' SCTE35-OUT', 'SCTE35-IN'].forEach(function (key) {
+                        if (event.attributes.hasOwnProperty(key)) {
+                            event.attributes[key] = event.attributes[key].toString(16);
+                        }
+                    });
+                    const clientAttributePattern = /^X-([A-Z]+-)+[A-Z]+$/;
+                    for (const key in event.attributes) {
+                        if (!clientAttributePattern.test(key)) {
+                            continue;
+                        }
+                        const isHexaDecimal = /[0-9A-Fa-f]{6}/g.test(event.attributes[key]);
+                        const isDecimalFloating = /^\d+(\.\d+)?$/.test(event.attributes[key]);
+                        event.attributes[key] = isHexaDecimal ? event.attributes[key].toString(16) : isDecimalFloating ? parseFloat(event.attributes[key]) : String(event.attributes[key]);
+                    }
+                    this.trigger('data', event);
+                    return;
+                }
+                match = /^#EXT-X-INDEPENDENT-SEGMENTS/.exec(newLine);
+                if (match) {
+                    this.trigger('data', {
+                        type: 'tag',
+                        tagType: 'independent-segments'
+                    });
+                    return;
+                }
+                match = /^#EXT-X-CONTENT-STEERING:(.*)$/.exec(newLine);
+                if (match) {
+                    event = {
+                        type: 'tag',
+                        tagType: 'content-steering'
+                    };
+                    event.attributes = parseAttributes$1(match[1]);
+                    this.trigger('data', event);
+                    return;
                 } // unknown tag type
 
                 this.trigger('data', {
@@ -29278,6 +29744,7 @@
             this.lineStream = new LineStream();
             this.parseStream = new ParseStream();
             this.lineStream.pipe(this.parseStream);
+            this.lastProgramDateTime = null;
             /* eslint-disable consistent-this */
 
             const self = this;
@@ -29306,6 +29773,7 @@
             this.manifest = {
                 allowCache: true,
                 discontinuityStarts: [],
+                dateRanges: [],
                 segments: []
             }; // keep track of the last seen segment's byte range end, as segments are not required
             // to provide the offset, in which case it defaults to the next byte after the
@@ -29314,6 +29782,7 @@
             let lastByterangeEnd = 0; // keep track of the last seen part's byte range end.
 
             let lastPartByterangeEnd = 0;
+            const dateRangeTags = {};
             this.on('end', () => {
                 // only add preloadSegment if we don't yet have a uri for it.
                 // and we actually have parts/preloadHints
@@ -29394,6 +29863,9 @@
                                         message: 'defaulting discontinuity sequence to zero'
                                     });
                                 }
+                                if (entry.title) {
+                                    currentUri.title = entry.title;
+                                }
                                 if (entry.duration > 0) {
                                     currentUri.duration = entry.duration;
                                 }
@@ -29603,6 +30075,21 @@
                                 }
                                 currentUri.dateTimeString = entry.dateTimeString;
                                 currentUri.dateTimeObject = entry.dateTimeObject;
+                                const {
+                                    lastProgramDateTime
+                                } = this;
+                                this.lastProgramDateTime = new Date(entry.dateTimeString).getTime(); // We should extrapolate Program Date Time backward only during first program date time occurrence.
+                                // Once we have at least one program date time point, we can always extrapolate it forward using lastProgramDateTime reference.
+
+                                if (lastProgramDateTime === null) {
+                                    // Extrapolate Program Date Time backward
+                                    // Since it is first program date time occurrence we're assuming that
+                                    // all this.manifest.segments have no program date time info
+                                    this.manifest.segments.reduceRight((programDateTime, segment) => {
+                                        segment.programDateTime = programDateTime - segment.duration * 1000;
+                                        return segment.programDateTime;
+                                    }, this.lastProgramDateTime);
+                                }
                             },
                             targetduration() {
                                 if (!isFinite(entry.duration) || entry.duration < 0) {
@@ -29732,6 +30219,68 @@
                                     this.manifest.partTargetDuration = this.manifest.partInf.partTarget;
                                 }
                                 setHoldBack.call(this, this.manifest);
+                            },
+                            'daterange'() {
+                                this.manifest.dateRanges.push(camelCaseKeys(entry.attributes));
+                                const index = this.manifest.dateRanges.length - 1;
+                                this.warnOnMissingAttributes_(`#EXT-X-DATERANGE #${index}`, entry.attributes, ['ID', 'START-DATE']);
+                                const dateRange = this.manifest.dateRanges[index];
+                                if (dateRange.endDate && dateRange.startDate && new Date(dateRange.endDate) < new Date(dateRange.startDate)) {
+                                    this.trigger('warn', {
+                                        message: 'EXT-X-DATERANGE END-DATE must be equal to or later than the value of the START-DATE'
+                                    });
+                                }
+                                if (dateRange.duration && dateRange.duration < 0) {
+                                    this.trigger('warn', {
+                                        message: 'EXT-X-DATERANGE DURATION must not be negative'
+                                    });
+                                }
+                                if (dateRange.plannedDuration && dateRange.plannedDuration < 0) {
+                                    this.trigger('warn', {
+                                        message: 'EXT-X-DATERANGE PLANNED-DURATION must not be negative'
+                                    });
+                                }
+                                const endOnNextYes = !!dateRange.endOnNext;
+                                if (endOnNextYes && !dateRange.class) {
+                                    this.trigger('warn', {
+                                        message: 'EXT-X-DATERANGE with an END-ON-NEXT=YES attribute must have a CLASS attribute'
+                                    });
+                                }
+                                if (endOnNextYes && (dateRange.duration || dateRange.endDate)) {
+                                    this.trigger('warn', {
+                                        message: 'EXT-X-DATERANGE with an END-ON-NEXT=YES attribute must not contain DURATION or END-DATE attributes'
+                                    });
+                                }
+                                if (dateRange.duration && dateRange.endDate) {
+                                    const startDate = dateRange.startDate;
+                                    const newDateInSeconds = startDate.getTime() + dateRange.duration * 1000;
+                                    this.manifest.dateRanges[index].endDate = new Date(newDateInSeconds);
+                                }
+                                if (!dateRangeTags[dateRange.id]) {
+                                    dateRangeTags[dateRange.id] = dateRange;
+                                } else {
+                                    for (const attribute in dateRangeTags[dateRange.id]) {
+                                        if (!!dateRange[attribute] && JSON.stringify(dateRangeTags[dateRange.id][attribute]) !== JSON.stringify(dateRange[attribute])) {
+                                            this.trigger('warn', {
+                                                message: 'EXT-X-DATERANGE tags with the same ID in a playlist must have the same attributes values'
+                                            });
+                                            break;
+                                        }
+                                    } // if tags with the same ID do not have conflicting attributes, merge them
+
+                                    const dateRangeWithSameId = this.manifest.dateRanges.findIndex(dateRangeToFind => dateRangeToFind.id === dateRange.id);
+                                    this.manifest.dateRanges[dateRangeWithSameId] = _extends$1(this.manifest.dateRanges[dateRangeWithSameId], dateRange);
+                                    dateRangeTags[dateRange.id] = _extends$1(dateRangeTags[dateRange.id], dateRange); // after merging, delete the duplicate dateRange that was added last
+
+                                    this.manifest.dateRanges.pop();
+                                }
+                            },
+                            'independent-segments'() {
+                                this.manifest.independentSegments = true;
+                            },
+                            'content-steering'() {
+                                this.manifest.contentSteering = camelCaseKeys(entry.attributes);
+                                this.warnOnMissingAttributes_('#EXT-X-CONTENT-STEERING', entry.attributes, ['SERVER-URI']);
                             }
                         })[entry.tagType] || noop).call(self);
                     },
@@ -29755,7 +30304,12 @@
                             currentUri.map = currentMap;
                         } // reset the last byterange end as it needs to be 0 between parts
 
-                        lastPartByterangeEnd = 0; // prepare for the next URI
+                        lastPartByterangeEnd = 0; // Once we have at least one program date time we can always extrapolate it forward
+
+                        if (this.lastProgramDateTime !== null) {
+                            currentUri.programDateTime = this.lastProgramDateTime;
+                            this.lastProgramDateTime += currentUri.duration * 1000;
+                        } // prepare for the next URI
 
                         currentUri = {};
                     },
@@ -29805,6 +30359,12 @@
         end() {
             // flush any buffered input
             this.lineStream.push('\n');
+            if (this.manifest.dateRanges.length && this.lastProgramDateTime === null) {
+                this.trigger('warn', {
+                    message: 'A playlist with EXT-X-DATERANGE tag must contain atleast one EXT-X-PROGRAM-DATE-TIME tag'
+                });
+            }
+            this.lastProgramDateTime = null;
             this.trigger('end');
         }
         /**
@@ -29812,7 +30372,7 @@
          *
          * @param {Object}   options              a map of options for the added parser
          * @param {RegExp}   options.expression   a regular expression to match the custom header
-         * @param {string}   options.type         the type to register to the output
+         * @param {string}   options.customType   the custom type to register to the output
          * @param {Function} [options.dataParser] function to parse the line into an object
          * @param {boolean}  [options.segment]    should tag data be attached to the segment object
          */
@@ -30242,44 +30802,6 @@
             });
     };
 
-    var DEFAULT_LOCATION = 'http://example.com';
-    var resolveUrl$1 = function resolveUrl(baseUrl, relativeUrl) {
-        // return early if we don't need to resolve
-        if (/^[a-z]+:/i.test(relativeUrl)) {
-            return relativeUrl;
-        } // if baseUrl is a data URI, ignore it and resolve everything relative to window.location
-
-        if (/^data:/.test(baseUrl)) {
-            baseUrl = window.location && window.location.href || '';
-        } // IE11 supports URL but not the URL constructor
-        // feature detect the behavior we want
-
-        var nativeURL = typeof window.URL === 'function';
-        var protocolLess = /^\/\//.test(baseUrl); // remove location if window.location isn't available (i.e. we're in node)
-        // and if baseUrl isn't an absolute url
-
-        var removeLocation = !window.location && !/\/\//i.test(baseUrl); // if the base URL is relative then combine with the current location
-
-        if (nativeURL) {
-            baseUrl = new window.URL(baseUrl, window.location || DEFAULT_LOCATION);
-        } else if (!/\/\//i.test(baseUrl)) {
-            baseUrl = urlToolkit.buildAbsoluteURL(window.location && window.location.href || '', baseUrl);
-        }
-        if (nativeURL) {
-            var newUrl = new URL(relativeUrl, baseUrl); // if we're a protocol-less url, remove the protocol
-            // and if we're location-less, remove the location
-            // otherwise, return the url unmodified
-
-            if (removeLocation) {
-                return newUrl.href.slice(DEFAULT_LOCATION.length);
-            } else if (protocolLess) {
-                return newUrl.href.slice(newUrl.protocol.length);
-            }
-            return newUrl.href;
-        }
-        return urlToolkit.buildAbsoluteURL(baseUrl, relativeUrl);
-    };
-
     /**
      * Loops through all supported media groups in master and calls the provided
      * callback for each group
@@ -30680,7 +31202,7 @@
          * 	The node at the indexth position in the NodeList, or null if that is not a valid index.
          */
         item: function (index) {
-            return this[index] || null;
+            return index >= 0 && index < this.length ? this[index] : null;
         },
         toString: function (isHTML, nodeFilter) {
             for (var buf = [], i = 0; i < this.length; i++) {
@@ -30712,17 +31234,23 @@
     }
     function _updateLiveList(list) {
         var inc = list._node._inc || list._node.ownerDocument._inc;
-        if (list._inc != inc) {
+        if (list._inc !== inc) {
             var ls = list._refresh(list._node);
-            //console.log(ls.length)
             __set__(list, 'length', ls.length);
+            if (!list.$$length || ls.length < list.$$length) {
+                for (var i = ls.length; (i in list); i++) {
+                    if (Object.prototype.hasOwnProperty.call(list, i)) {
+                        delete list[i];
+                    }
+                }
+            }
             copy(ls, list);
             list._inc = inc;
         }
     }
     LiveNodeList.prototype.item = function (i) {
         _updateLiveList(this);
-        return this[i];
+        return this[i] || null;
     };
     _extends(LiveNodeList, NodeList);
 
@@ -31630,7 +32158,7 @@
         createProcessingInstruction: function (target, data) {
             var node = new ProcessingInstruction();
             node.ownerDocument = this;
-            node.tagName = node.target = target;
+            node.tagName = node.nodeName = node.target = target;
             node.nodeValue = node.data = data;
             return node;
         },
@@ -32279,6 +32807,7 @@
     };
 
     var entities = createCommonjsModule(function (module, exports) {
+
         var freeze = conventions.freeze;
 
         /**
@@ -32297,260 +32826,2145 @@
         });
 
         /**
-         * A map of currently 241 entities that are detected in an HTML document.
+         * A map of all entities that are detected in an HTML document.
          * They contain all entries from `XML_ENTITIES`.
          *
          * @see XML_ENTITIES
          * @see DOMParser.parseFromString
          * @see DOMImplementation.prototype.createHTMLDocument
          * @see https://html.spec.whatwg.org/#named-character-references WHATWG HTML(5) Spec
+         * @see https://html.spec.whatwg.org/entities.json JSON
          * @see https://www.w3.org/TR/xml-entity-names/ W3C XML Entity Names
          * @see https://www.w3.org/TR/html4/sgml/entities.html W3C HTML4/SGML
          * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Character_entity_references_in_HTML Wikipedia (HTML)
          * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Entities_representing_special_characters_in_XHTML Wikpedia (XHTML)
          */
         exports.HTML_ENTITIES = freeze({
-            lt: '<',
-            gt: '>',
-            amp: '&',
-            quot: '"',
-            apos: "'",
-            Agrave: "À",
-            Aacute: "Á",
-            Acirc: "Â",
-            Atilde: "Ã",
-            Auml: "Ä",
-            Aring: "Å",
-            AElig: "Æ",
-            Ccedil: "Ç",
-            Egrave: "È",
-            Eacute: "É",
-            Ecirc: "Ê",
-            Euml: "Ë",
-            Igrave: "Ì",
-            Iacute: "Í",
-            Icirc: "Î",
-            Iuml: "Ï",
-            ETH: "Ð",
-            Ntilde: "Ñ",
-            Ograve: "Ò",
-            Oacute: "Ó",
-            Ocirc: "Ô",
-            Otilde: "Õ",
-            Ouml: "Ö",
-            Oslash: "Ø",
-            Ugrave: "Ù",
-            Uacute: "Ú",
-            Ucirc: "Û",
-            Uuml: "Ü",
-            Yacute: "Ý",
-            THORN: "Þ",
-            szlig: "ß",
-            agrave: "à",
-            aacute: "á",
-            acirc: "â",
-            atilde: "ã",
-            auml: "ä",
-            aring: "å",
-            aelig: "æ",
-            ccedil: "ç",
-            egrave: "è",
-            eacute: "é",
-            ecirc: "ê",
-            euml: "ë",
-            igrave: "ì",
-            iacute: "í",
-            icirc: "î",
-            iuml: "ï",
-            eth: "ð",
-            ntilde: "ñ",
-            ograve: "ò",
-            oacute: "ó",
-            ocirc: "ô",
-            otilde: "õ",
-            ouml: "ö",
-            oslash: "ø",
-            ugrave: "ù",
-            uacute: "ú",
-            ucirc: "û",
-            uuml: "ü",
-            yacute: "ý",
-            thorn: "þ",
-            yuml: "ÿ",
-            nbsp: "\u00a0",
-            iexcl: "¡",
-            cent: "¢",
-            pound: "£",
-            curren: "¤",
-            yen: "¥",
-            brvbar: "¦",
-            sect: "§",
-            uml: "¨",
-            copy: "©",
-            ordf: "ª",
-            laquo: "«",
-            not: "¬",
-            shy: "­­",
-            reg: "®",
-            macr: "¯",
-            deg: "°",
-            plusmn: "±",
-            sup2: "²",
-            sup3: "³",
-            acute: "´",
-            micro: "µ",
-            para: "¶",
-            middot: "·",
-            cedil: "¸",
-            sup1: "¹",
-            ordm: "º",
-            raquo: "»",
-            frac14: "¼",
-            frac12: "½",
-            frac34: "¾",
-            iquest: "¿",
-            times: "×",
-            divide: "÷",
-            forall: "∀",
-            part: "∂",
-            exist: "∃",
-            empty: "∅",
-            nabla: "∇",
-            isin: "∈",
-            notin: "∉",
-            ni: "∋",
-            prod: "∏",
-            sum: "∑",
-            minus: "−",
-            lowast: "∗",
-            radic: "√",
-            prop: "∝",
-            infin: "∞",
-            ang: "∠",
-            and: "∧",
-            or: "∨",
-            cap: "∩",
-            cup: "∪",
-            'int': "∫",
-            there4: "∴",
-            sim: "∼",
-            cong: "≅",
-            asymp: "≈",
-            ne: "≠",
-            equiv: "≡",
-            le: "≤",
-            ge: "≥",
-            sub: "⊂",
-            sup: "⊃",
-            nsub: "⊄",
-            sube: "⊆",
-            supe: "⊇",
-            oplus: "⊕",
-            otimes: "⊗",
-            perp: "⊥",
-            sdot: "⋅",
-            Alpha: "Α",
-            Beta: "Β",
-            Gamma: "Γ",
-            Delta: "Δ",
-            Epsilon: "Ε",
-            Zeta: "Ζ",
-            Eta: "Η",
-            Theta: "Θ",
-            Iota: "Ι",
-            Kappa: "Κ",
-            Lambda: "Λ",
-            Mu: "Μ",
-            Nu: "Ν",
-            Xi: "Ξ",
-            Omicron: "Ο",
-            Pi: "Π",
-            Rho: "Ρ",
-            Sigma: "Σ",
-            Tau: "Τ",
-            Upsilon: "Υ",
-            Phi: "Φ",
-            Chi: "Χ",
-            Psi: "Ψ",
-            Omega: "Ω",
-            alpha: "α",
-            beta: "β",
-            gamma: "γ",
-            delta: "δ",
-            epsilon: "ε",
-            zeta: "ζ",
-            eta: "η",
-            theta: "θ",
-            iota: "ι",
-            kappa: "κ",
-            lambda: "λ",
-            mu: "μ",
-            nu: "ν",
-            xi: "ξ",
-            omicron: "ο",
-            pi: "π",
-            rho: "ρ",
-            sigmaf: "ς",
-            sigma: "σ",
-            tau: "τ",
-            upsilon: "υ",
-            phi: "φ",
-            chi: "χ",
-            psi: "ψ",
-            omega: "ω",
-            thetasym: "ϑ",
-            upsih: "ϒ",
-            piv: "ϖ",
-            OElig: "Œ",
-            oelig: "œ",
-            Scaron: "Š",
-            scaron: "š",
-            Yuml: "Ÿ",
-            fnof: "ƒ",
-            circ: "ˆ",
-            tilde: "˜",
-            ensp: " ",
-            emsp: " ",
-            thinsp: " ",
-            zwnj: "‌",
-            zwj: "‍",
-            lrm: "‎",
-            rlm: "‏",
-            ndash: "–",
-            mdash: "—",
-            lsquo: "‘",
-            rsquo: "’",
-            sbquo: "‚",
-            ldquo: "“",
-            rdquo: "”",
-            bdquo: "„",
-            dagger: "†",
-            Dagger: "‡",
-            bull: "•",
-            hellip: "…",
-            permil: "‰",
-            prime: "′",
-            Prime: "″",
-            lsaquo: "‹",
-            rsaquo: "›",
-            oline: "‾",
-            euro: "€",
-            trade: "™",
-            larr: "←",
-            uarr: "↑",
-            rarr: "→",
-            darr: "↓",
-            harr: "↔",
-            crarr: "↵",
-            lceil: "⌈",
-            rceil: "⌉",
-            lfloor: "⌊",
-            rfloor: "⌋",
-            loz: "◊",
-            spades: "♠",
-            clubs: "♣",
-            hearts: "♥",
-            diams: "♦"
+            Aacute: '\u00C1',
+            aacute: '\u00E1',
+            Abreve: '\u0102',
+            abreve: '\u0103',
+            ac: '\u223E',
+            acd: '\u223F',
+            acE: '\u223E\u0333',
+            Acirc: '\u00C2',
+            acirc: '\u00E2',
+            acute: '\u00B4',
+            Acy: '\u0410',
+            acy: '\u0430',
+            AElig: '\u00C6',
+            aelig: '\u00E6',
+            af: '\u2061',
+            Afr: '\uD835\uDD04',
+            afr: '\uD835\uDD1E',
+            Agrave: '\u00C0',
+            agrave: '\u00E0',
+            alefsym: '\u2135',
+            aleph: '\u2135',
+            Alpha: '\u0391',
+            alpha: '\u03B1',
+            Amacr: '\u0100',
+            amacr: '\u0101',
+            amalg: '\u2A3F',
+            AMP: '\u0026',
+            amp: '\u0026',
+            And: '\u2A53',
+            and: '\u2227',
+            andand: '\u2A55',
+            andd: '\u2A5C',
+            andslope: '\u2A58',
+            andv: '\u2A5A',
+            ang: '\u2220',
+            ange: '\u29A4',
+            angle: '\u2220',
+            angmsd: '\u2221',
+            angmsdaa: '\u29A8',
+            angmsdab: '\u29A9',
+            angmsdac: '\u29AA',
+            angmsdad: '\u29AB',
+            angmsdae: '\u29AC',
+            angmsdaf: '\u29AD',
+            angmsdag: '\u29AE',
+            angmsdah: '\u29AF',
+            angrt: '\u221F',
+            angrtvb: '\u22BE',
+            angrtvbd: '\u299D',
+            angsph: '\u2222',
+            angst: '\u00C5',
+            angzarr: '\u237C',
+            Aogon: '\u0104',
+            aogon: '\u0105',
+            Aopf: '\uD835\uDD38',
+            aopf: '\uD835\uDD52',
+            ap: '\u2248',
+            apacir: '\u2A6F',
+            apE: '\u2A70',
+            ape: '\u224A',
+            apid: '\u224B',
+            apos: '\u0027',
+            ApplyFunction: '\u2061',
+            approx: '\u2248',
+            approxeq: '\u224A',
+            Aring: '\u00C5',
+            aring: '\u00E5',
+            Ascr: '\uD835\uDC9C',
+            ascr: '\uD835\uDCB6',
+            Assign: '\u2254',
+            ast: '\u002A',
+            asymp: '\u2248',
+            asympeq: '\u224D',
+            Atilde: '\u00C3',
+            atilde: '\u00E3',
+            Auml: '\u00C4',
+            auml: '\u00E4',
+            awconint: '\u2233',
+            awint: '\u2A11',
+            backcong: '\u224C',
+            backepsilon: '\u03F6',
+            backprime: '\u2035',
+            backsim: '\u223D',
+            backsimeq: '\u22CD',
+            Backslash: '\u2216',
+            Barv: '\u2AE7',
+            barvee: '\u22BD',
+            Barwed: '\u2306',
+            barwed: '\u2305',
+            barwedge: '\u2305',
+            bbrk: '\u23B5',
+            bbrktbrk: '\u23B6',
+            bcong: '\u224C',
+            Bcy: '\u0411',
+            bcy: '\u0431',
+            bdquo: '\u201E',
+            becaus: '\u2235',
+            Because: '\u2235',
+            because: '\u2235',
+            bemptyv: '\u29B0',
+            bepsi: '\u03F6',
+            bernou: '\u212C',
+            Bernoullis: '\u212C',
+            Beta: '\u0392',
+            beta: '\u03B2',
+            beth: '\u2136',
+            between: '\u226C',
+            Bfr: '\uD835\uDD05',
+            bfr: '\uD835\uDD1F',
+            bigcap: '\u22C2',
+            bigcirc: '\u25EF',
+            bigcup: '\u22C3',
+            bigodot: '\u2A00',
+            bigoplus: '\u2A01',
+            bigotimes: '\u2A02',
+            bigsqcup: '\u2A06',
+            bigstar: '\u2605',
+            bigtriangledown: '\u25BD',
+            bigtriangleup: '\u25B3',
+            biguplus: '\u2A04',
+            bigvee: '\u22C1',
+            bigwedge: '\u22C0',
+            bkarow: '\u290D',
+            blacklozenge: '\u29EB',
+            blacksquare: '\u25AA',
+            blacktriangle: '\u25B4',
+            blacktriangledown: '\u25BE',
+            blacktriangleleft: '\u25C2',
+            blacktriangleright: '\u25B8',
+            blank: '\u2423',
+            blk12: '\u2592',
+            blk14: '\u2591',
+            blk34: '\u2593',
+            block: '\u2588',
+            bne: '\u003D\u20E5',
+            bnequiv: '\u2261\u20E5',
+            bNot: '\u2AED',
+            bnot: '\u2310',
+            Bopf: '\uD835\uDD39',
+            bopf: '\uD835\uDD53',
+            bot: '\u22A5',
+            bottom: '\u22A5',
+            bowtie: '\u22C8',
+            boxbox: '\u29C9',
+            boxDL: '\u2557',
+            boxDl: '\u2556',
+            boxdL: '\u2555',
+            boxdl: '\u2510',
+            boxDR: '\u2554',
+            boxDr: '\u2553',
+            boxdR: '\u2552',
+            boxdr: '\u250C',
+            boxH: '\u2550',
+            boxh: '\u2500',
+            boxHD: '\u2566',
+            boxHd: '\u2564',
+            boxhD: '\u2565',
+            boxhd: '\u252C',
+            boxHU: '\u2569',
+            boxHu: '\u2567',
+            boxhU: '\u2568',
+            boxhu: '\u2534',
+            boxminus: '\u229F',
+            boxplus: '\u229E',
+            boxtimes: '\u22A0',
+            boxUL: '\u255D',
+            boxUl: '\u255C',
+            boxuL: '\u255B',
+            boxul: '\u2518',
+            boxUR: '\u255A',
+            boxUr: '\u2559',
+            boxuR: '\u2558',
+            boxur: '\u2514',
+            boxV: '\u2551',
+            boxv: '\u2502',
+            boxVH: '\u256C',
+            boxVh: '\u256B',
+            boxvH: '\u256A',
+            boxvh: '\u253C',
+            boxVL: '\u2563',
+            boxVl: '\u2562',
+            boxvL: '\u2561',
+            boxvl: '\u2524',
+            boxVR: '\u2560',
+            boxVr: '\u255F',
+            boxvR: '\u255E',
+            boxvr: '\u251C',
+            bprime: '\u2035',
+            Breve: '\u02D8',
+            breve: '\u02D8',
+            brvbar: '\u00A6',
+            Bscr: '\u212C',
+            bscr: '\uD835\uDCB7',
+            bsemi: '\u204F',
+            bsim: '\u223D',
+            bsime: '\u22CD',
+            bsol: '\u005C',
+            bsolb: '\u29C5',
+            bsolhsub: '\u27C8',
+            bull: '\u2022',
+            bullet: '\u2022',
+            bump: '\u224E',
+            bumpE: '\u2AAE',
+            bumpe: '\u224F',
+            Bumpeq: '\u224E',
+            bumpeq: '\u224F',
+            Cacute: '\u0106',
+            cacute: '\u0107',
+            Cap: '\u22D2',
+            cap: '\u2229',
+            capand: '\u2A44',
+            capbrcup: '\u2A49',
+            capcap: '\u2A4B',
+            capcup: '\u2A47',
+            capdot: '\u2A40',
+            CapitalDifferentialD: '\u2145',
+            caps: '\u2229\uFE00',
+            caret: '\u2041',
+            caron: '\u02C7',
+            Cayleys: '\u212D',
+            ccaps: '\u2A4D',
+            Ccaron: '\u010C',
+            ccaron: '\u010D',
+            Ccedil: '\u00C7',
+            ccedil: '\u00E7',
+            Ccirc: '\u0108',
+            ccirc: '\u0109',
+            Cconint: '\u2230',
+            ccups: '\u2A4C',
+            ccupssm: '\u2A50',
+            Cdot: '\u010A',
+            cdot: '\u010B',
+            cedil: '\u00B8',
+            Cedilla: '\u00B8',
+            cemptyv: '\u29B2',
+            cent: '\u00A2',
+            CenterDot: '\u00B7',
+            centerdot: '\u00B7',
+            Cfr: '\u212D',
+            cfr: '\uD835\uDD20',
+            CHcy: '\u0427',
+            chcy: '\u0447',
+            check: '\u2713',
+            checkmark: '\u2713',
+            Chi: '\u03A7',
+            chi: '\u03C7',
+            cir: '\u25CB',
+            circ: '\u02C6',
+            circeq: '\u2257',
+            circlearrowleft: '\u21BA',
+            circlearrowright: '\u21BB',
+            circledast: '\u229B',
+            circledcirc: '\u229A',
+            circleddash: '\u229D',
+            CircleDot: '\u2299',
+            circledR: '\u00AE',
+            circledS: '\u24C8',
+            CircleMinus: '\u2296',
+            CirclePlus: '\u2295',
+            CircleTimes: '\u2297',
+            cirE: '\u29C3',
+            cire: '\u2257',
+            cirfnint: '\u2A10',
+            cirmid: '\u2AEF',
+            cirscir: '\u29C2',
+            ClockwiseContourIntegral: '\u2232',
+            CloseCurlyDoubleQuote: '\u201D',
+            CloseCurlyQuote: '\u2019',
+            clubs: '\u2663',
+            clubsuit: '\u2663',
+            Colon: '\u2237',
+            colon: '\u003A',
+            Colone: '\u2A74',
+            colone: '\u2254',
+            coloneq: '\u2254',
+            comma: '\u002C',
+            commat: '\u0040',
+            comp: '\u2201',
+            compfn: '\u2218',
+            complement: '\u2201',
+            complexes: '\u2102',
+            cong: '\u2245',
+            congdot: '\u2A6D',
+            Congruent: '\u2261',
+            Conint: '\u222F',
+            conint: '\u222E',
+            ContourIntegral: '\u222E',
+            Copf: '\u2102',
+            copf: '\uD835\uDD54',
+            coprod: '\u2210',
+            Coproduct: '\u2210',
+            COPY: '\u00A9',
+            copy: '\u00A9',
+            copysr: '\u2117',
+            CounterClockwiseContourIntegral: '\u2233',
+            crarr: '\u21B5',
+            Cross: '\u2A2F',
+            cross: '\u2717',
+            Cscr: '\uD835\uDC9E',
+            cscr: '\uD835\uDCB8',
+            csub: '\u2ACF',
+            csube: '\u2AD1',
+            csup: '\u2AD0',
+            csupe: '\u2AD2',
+            ctdot: '\u22EF',
+            cudarrl: '\u2938',
+            cudarrr: '\u2935',
+            cuepr: '\u22DE',
+            cuesc: '\u22DF',
+            cularr: '\u21B6',
+            cularrp: '\u293D',
+            Cup: '\u22D3',
+            cup: '\u222A',
+            cupbrcap: '\u2A48',
+            CupCap: '\u224D',
+            cupcap: '\u2A46',
+            cupcup: '\u2A4A',
+            cupdot: '\u228D',
+            cupor: '\u2A45',
+            cups: '\u222A\uFE00',
+            curarr: '\u21B7',
+            curarrm: '\u293C',
+            curlyeqprec: '\u22DE',
+            curlyeqsucc: '\u22DF',
+            curlyvee: '\u22CE',
+            curlywedge: '\u22CF',
+            curren: '\u00A4',
+            curvearrowleft: '\u21B6',
+            curvearrowright: '\u21B7',
+            cuvee: '\u22CE',
+            cuwed: '\u22CF',
+            cwconint: '\u2232',
+            cwint: '\u2231',
+            cylcty: '\u232D',
+            Dagger: '\u2021',
+            dagger: '\u2020',
+            daleth: '\u2138',
+            Darr: '\u21A1',
+            dArr: '\u21D3',
+            darr: '\u2193',
+            dash: '\u2010',
+            Dashv: '\u2AE4',
+            dashv: '\u22A3',
+            dbkarow: '\u290F',
+            dblac: '\u02DD',
+            Dcaron: '\u010E',
+            dcaron: '\u010F',
+            Dcy: '\u0414',
+            dcy: '\u0434',
+            DD: '\u2145',
+            dd: '\u2146',
+            ddagger: '\u2021',
+            ddarr: '\u21CA',
+            DDotrahd: '\u2911',
+            ddotseq: '\u2A77',
+            deg: '\u00B0',
+            Del: '\u2207',
+            Delta: '\u0394',
+            delta: '\u03B4',
+            demptyv: '\u29B1',
+            dfisht: '\u297F',
+            Dfr: '\uD835\uDD07',
+            dfr: '\uD835\uDD21',
+            dHar: '\u2965',
+            dharl: '\u21C3',
+            dharr: '\u21C2',
+            DiacriticalAcute: '\u00B4',
+            DiacriticalDot: '\u02D9',
+            DiacriticalDoubleAcute: '\u02DD',
+            DiacriticalGrave: '\u0060',
+            DiacriticalTilde: '\u02DC',
+            diam: '\u22C4',
+            Diamond: '\u22C4',
+            diamond: '\u22C4',
+            diamondsuit: '\u2666',
+            diams: '\u2666',
+            die: '\u00A8',
+            DifferentialD: '\u2146',
+            digamma: '\u03DD',
+            disin: '\u22F2',
+            div: '\u00F7',
+            divide: '\u00F7',
+            divideontimes: '\u22C7',
+            divonx: '\u22C7',
+            DJcy: '\u0402',
+            djcy: '\u0452',
+            dlcorn: '\u231E',
+            dlcrop: '\u230D',
+            dollar: '\u0024',
+            Dopf: '\uD835\uDD3B',
+            dopf: '\uD835\uDD55',
+            Dot: '\u00A8',
+            dot: '\u02D9',
+            DotDot: '\u20DC',
+            doteq: '\u2250',
+            doteqdot: '\u2251',
+            DotEqual: '\u2250',
+            dotminus: '\u2238',
+            dotplus: '\u2214',
+            dotsquare: '\u22A1',
+            doublebarwedge: '\u2306',
+            DoubleContourIntegral: '\u222F',
+            DoubleDot: '\u00A8',
+            DoubleDownArrow: '\u21D3',
+            DoubleLeftArrow: '\u21D0',
+            DoubleLeftRightArrow: '\u21D4',
+            DoubleLeftTee: '\u2AE4',
+            DoubleLongLeftArrow: '\u27F8',
+            DoubleLongLeftRightArrow: '\u27FA',
+            DoubleLongRightArrow: '\u27F9',
+            DoubleRightArrow: '\u21D2',
+            DoubleRightTee: '\u22A8',
+            DoubleUpArrow: '\u21D1',
+            DoubleUpDownArrow: '\u21D5',
+            DoubleVerticalBar: '\u2225',
+            DownArrow: '\u2193',
+            Downarrow: '\u21D3',
+            downarrow: '\u2193',
+            DownArrowBar: '\u2913',
+            DownArrowUpArrow: '\u21F5',
+            DownBreve: '\u0311',
+            downdownarrows: '\u21CA',
+            downharpoonleft: '\u21C3',
+            downharpoonright: '\u21C2',
+            DownLeftRightVector: '\u2950',
+            DownLeftTeeVector: '\u295E',
+            DownLeftVector: '\u21BD',
+            DownLeftVectorBar: '\u2956',
+            DownRightTeeVector: '\u295F',
+            DownRightVector: '\u21C1',
+            DownRightVectorBar: '\u2957',
+            DownTee: '\u22A4',
+            DownTeeArrow: '\u21A7',
+            drbkarow: '\u2910',
+            drcorn: '\u231F',
+            drcrop: '\u230C',
+            Dscr: '\uD835\uDC9F',
+            dscr: '\uD835\uDCB9',
+            DScy: '\u0405',
+            dscy: '\u0455',
+            dsol: '\u29F6',
+            Dstrok: '\u0110',
+            dstrok: '\u0111',
+            dtdot: '\u22F1',
+            dtri: '\u25BF',
+            dtrif: '\u25BE',
+            duarr: '\u21F5',
+            duhar: '\u296F',
+            dwangle: '\u29A6',
+            DZcy: '\u040F',
+            dzcy: '\u045F',
+            dzigrarr: '\u27FF',
+            Eacute: '\u00C9',
+            eacute: '\u00E9',
+            easter: '\u2A6E',
+            Ecaron: '\u011A',
+            ecaron: '\u011B',
+            ecir: '\u2256',
+            Ecirc: '\u00CA',
+            ecirc: '\u00EA',
+            ecolon: '\u2255',
+            Ecy: '\u042D',
+            ecy: '\u044D',
+            eDDot: '\u2A77',
+            Edot: '\u0116',
+            eDot: '\u2251',
+            edot: '\u0117',
+            ee: '\u2147',
+            efDot: '\u2252',
+            Efr: '\uD835\uDD08',
+            efr: '\uD835\uDD22',
+            eg: '\u2A9A',
+            Egrave: '\u00C8',
+            egrave: '\u00E8',
+            egs: '\u2A96',
+            egsdot: '\u2A98',
+            el: '\u2A99',
+            Element: '\u2208',
+            elinters: '\u23E7',
+            ell: '\u2113',
+            els: '\u2A95',
+            elsdot: '\u2A97',
+            Emacr: '\u0112',
+            emacr: '\u0113',
+            empty: '\u2205',
+            emptyset: '\u2205',
+            EmptySmallSquare: '\u25FB',
+            emptyv: '\u2205',
+            EmptyVerySmallSquare: '\u25AB',
+            emsp: '\u2003',
+            emsp13: '\u2004',
+            emsp14: '\u2005',
+            ENG: '\u014A',
+            eng: '\u014B',
+            ensp: '\u2002',
+            Eogon: '\u0118',
+            eogon: '\u0119',
+            Eopf: '\uD835\uDD3C',
+            eopf: '\uD835\uDD56',
+            epar: '\u22D5',
+            eparsl: '\u29E3',
+            eplus: '\u2A71',
+            epsi: '\u03B5',
+            Epsilon: '\u0395',
+            epsilon: '\u03B5',
+            epsiv: '\u03F5',
+            eqcirc: '\u2256',
+            eqcolon: '\u2255',
+            eqsim: '\u2242',
+            eqslantgtr: '\u2A96',
+            eqslantless: '\u2A95',
+            Equal: '\u2A75',
+            equals: '\u003D',
+            EqualTilde: '\u2242',
+            equest: '\u225F',
+            Equilibrium: '\u21CC',
+            equiv: '\u2261',
+            equivDD: '\u2A78',
+            eqvparsl: '\u29E5',
+            erarr: '\u2971',
+            erDot: '\u2253',
+            Escr: '\u2130',
+            escr: '\u212F',
+            esdot: '\u2250',
+            Esim: '\u2A73',
+            esim: '\u2242',
+            Eta: '\u0397',
+            eta: '\u03B7',
+            ETH: '\u00D0',
+            eth: '\u00F0',
+            Euml: '\u00CB',
+            euml: '\u00EB',
+            euro: '\u20AC',
+            excl: '\u0021',
+            exist: '\u2203',
+            Exists: '\u2203',
+            expectation: '\u2130',
+            ExponentialE: '\u2147',
+            exponentiale: '\u2147',
+            fallingdotseq: '\u2252',
+            Fcy: '\u0424',
+            fcy: '\u0444',
+            female: '\u2640',
+            ffilig: '\uFB03',
+            fflig: '\uFB00',
+            ffllig: '\uFB04',
+            Ffr: '\uD835\uDD09',
+            ffr: '\uD835\uDD23',
+            filig: '\uFB01',
+            FilledSmallSquare: '\u25FC',
+            FilledVerySmallSquare: '\u25AA',
+            fjlig: '\u0066\u006A',
+            flat: '\u266D',
+            fllig: '\uFB02',
+            fltns: '\u25B1',
+            fnof: '\u0192',
+            Fopf: '\uD835\uDD3D',
+            fopf: '\uD835\uDD57',
+            ForAll: '\u2200',
+            forall: '\u2200',
+            fork: '\u22D4',
+            forkv: '\u2AD9',
+            Fouriertrf: '\u2131',
+            fpartint: '\u2A0D',
+            frac12: '\u00BD',
+            frac13: '\u2153',
+            frac14: '\u00BC',
+            frac15: '\u2155',
+            frac16: '\u2159',
+            frac18: '\u215B',
+            frac23: '\u2154',
+            frac25: '\u2156',
+            frac34: '\u00BE',
+            frac35: '\u2157',
+            frac38: '\u215C',
+            frac45: '\u2158',
+            frac56: '\u215A',
+            frac58: '\u215D',
+            frac78: '\u215E',
+            frasl: '\u2044',
+            frown: '\u2322',
+            Fscr: '\u2131',
+            fscr: '\uD835\uDCBB',
+            gacute: '\u01F5',
+            Gamma: '\u0393',
+            gamma: '\u03B3',
+            Gammad: '\u03DC',
+            gammad: '\u03DD',
+            gap: '\u2A86',
+            Gbreve: '\u011E',
+            gbreve: '\u011F',
+            Gcedil: '\u0122',
+            Gcirc: '\u011C',
+            gcirc: '\u011D',
+            Gcy: '\u0413',
+            gcy: '\u0433',
+            Gdot: '\u0120',
+            gdot: '\u0121',
+            gE: '\u2267',
+            ge: '\u2265',
+            gEl: '\u2A8C',
+            gel: '\u22DB',
+            geq: '\u2265',
+            geqq: '\u2267',
+            geqslant: '\u2A7E',
+            ges: '\u2A7E',
+            gescc: '\u2AA9',
+            gesdot: '\u2A80',
+            gesdoto: '\u2A82',
+            gesdotol: '\u2A84',
+            gesl: '\u22DB\uFE00',
+            gesles: '\u2A94',
+            Gfr: '\uD835\uDD0A',
+            gfr: '\uD835\uDD24',
+            Gg: '\u22D9',
+            gg: '\u226B',
+            ggg: '\u22D9',
+            gimel: '\u2137',
+            GJcy: '\u0403',
+            gjcy: '\u0453',
+            gl: '\u2277',
+            gla: '\u2AA5',
+            glE: '\u2A92',
+            glj: '\u2AA4',
+            gnap: '\u2A8A',
+            gnapprox: '\u2A8A',
+            gnE: '\u2269',
+            gne: '\u2A88',
+            gneq: '\u2A88',
+            gneqq: '\u2269',
+            gnsim: '\u22E7',
+            Gopf: '\uD835\uDD3E',
+            gopf: '\uD835\uDD58',
+            grave: '\u0060',
+            GreaterEqual: '\u2265',
+            GreaterEqualLess: '\u22DB',
+            GreaterFullEqual: '\u2267',
+            GreaterGreater: '\u2AA2',
+            GreaterLess: '\u2277',
+            GreaterSlantEqual: '\u2A7E',
+            GreaterTilde: '\u2273',
+            Gscr: '\uD835\uDCA2',
+            gscr: '\u210A',
+            gsim: '\u2273',
+            gsime: '\u2A8E',
+            gsiml: '\u2A90',
+            Gt: '\u226B',
+            GT: '\u003E',
+            gt: '\u003E',
+            gtcc: '\u2AA7',
+            gtcir: '\u2A7A',
+            gtdot: '\u22D7',
+            gtlPar: '\u2995',
+            gtquest: '\u2A7C',
+            gtrapprox: '\u2A86',
+            gtrarr: '\u2978',
+            gtrdot: '\u22D7',
+            gtreqless: '\u22DB',
+            gtreqqless: '\u2A8C',
+            gtrless: '\u2277',
+            gtrsim: '\u2273',
+            gvertneqq: '\u2269\uFE00',
+            gvnE: '\u2269\uFE00',
+            Hacek: '\u02C7',
+            hairsp: '\u200A',
+            half: '\u00BD',
+            hamilt: '\u210B',
+            HARDcy: '\u042A',
+            hardcy: '\u044A',
+            hArr: '\u21D4',
+            harr: '\u2194',
+            harrcir: '\u2948',
+            harrw: '\u21AD',
+            Hat: '\u005E',
+            hbar: '\u210F',
+            Hcirc: '\u0124',
+            hcirc: '\u0125',
+            hearts: '\u2665',
+            heartsuit: '\u2665',
+            hellip: '\u2026',
+            hercon: '\u22B9',
+            Hfr: '\u210C',
+            hfr: '\uD835\uDD25',
+            HilbertSpace: '\u210B',
+            hksearow: '\u2925',
+            hkswarow: '\u2926',
+            hoarr: '\u21FF',
+            homtht: '\u223B',
+            hookleftarrow: '\u21A9',
+            hookrightarrow: '\u21AA',
+            Hopf: '\u210D',
+            hopf: '\uD835\uDD59',
+            horbar: '\u2015',
+            HorizontalLine: '\u2500',
+            Hscr: '\u210B',
+            hscr: '\uD835\uDCBD',
+            hslash: '\u210F',
+            Hstrok: '\u0126',
+            hstrok: '\u0127',
+            HumpDownHump: '\u224E',
+            HumpEqual: '\u224F',
+            hybull: '\u2043',
+            hyphen: '\u2010',
+            Iacute: '\u00CD',
+            iacute: '\u00ED',
+            ic: '\u2063',
+            Icirc: '\u00CE',
+            icirc: '\u00EE',
+            Icy: '\u0418',
+            icy: '\u0438',
+            Idot: '\u0130',
+            IEcy: '\u0415',
+            iecy: '\u0435',
+            iexcl: '\u00A1',
+            iff: '\u21D4',
+            Ifr: '\u2111',
+            ifr: '\uD835\uDD26',
+            Igrave: '\u00CC',
+            igrave: '\u00EC',
+            ii: '\u2148',
+            iiiint: '\u2A0C',
+            iiint: '\u222D',
+            iinfin: '\u29DC',
+            iiota: '\u2129',
+            IJlig: '\u0132',
+            ijlig: '\u0133',
+            Im: '\u2111',
+            Imacr: '\u012A',
+            imacr: '\u012B',
+            image: '\u2111',
+            ImaginaryI: '\u2148',
+            imagline: '\u2110',
+            imagpart: '\u2111',
+            imath: '\u0131',
+            imof: '\u22B7',
+            imped: '\u01B5',
+            Implies: '\u21D2',
+            in: '\u2208',
+            incare: '\u2105',
+            infin: '\u221E',
+            infintie: '\u29DD',
+            inodot: '\u0131',
+            Int: '\u222C',
+            int: '\u222B',
+            intcal: '\u22BA',
+            integers: '\u2124',
+            Integral: '\u222B',
+            intercal: '\u22BA',
+            Intersection: '\u22C2',
+            intlarhk: '\u2A17',
+            intprod: '\u2A3C',
+            InvisibleComma: '\u2063',
+            InvisibleTimes: '\u2062',
+            IOcy: '\u0401',
+            iocy: '\u0451',
+            Iogon: '\u012E',
+            iogon: '\u012F',
+            Iopf: '\uD835\uDD40',
+            iopf: '\uD835\uDD5A',
+            Iota: '\u0399',
+            iota: '\u03B9',
+            iprod: '\u2A3C',
+            iquest: '\u00BF',
+            Iscr: '\u2110',
+            iscr: '\uD835\uDCBE',
+            isin: '\u2208',
+            isindot: '\u22F5',
+            isinE: '\u22F9',
+            isins: '\u22F4',
+            isinsv: '\u22F3',
+            isinv: '\u2208',
+            it: '\u2062',
+            Itilde: '\u0128',
+            itilde: '\u0129',
+            Iukcy: '\u0406',
+            iukcy: '\u0456',
+            Iuml: '\u00CF',
+            iuml: '\u00EF',
+            Jcirc: '\u0134',
+            jcirc: '\u0135',
+            Jcy: '\u0419',
+            jcy: '\u0439',
+            Jfr: '\uD835\uDD0D',
+            jfr: '\uD835\uDD27',
+            jmath: '\u0237',
+            Jopf: '\uD835\uDD41',
+            jopf: '\uD835\uDD5B',
+            Jscr: '\uD835\uDCA5',
+            jscr: '\uD835\uDCBF',
+            Jsercy: '\u0408',
+            jsercy: '\u0458',
+            Jukcy: '\u0404',
+            jukcy: '\u0454',
+            Kappa: '\u039A',
+            kappa: '\u03BA',
+            kappav: '\u03F0',
+            Kcedil: '\u0136',
+            kcedil: '\u0137',
+            Kcy: '\u041A',
+            kcy: '\u043A',
+            Kfr: '\uD835\uDD0E',
+            kfr: '\uD835\uDD28',
+            kgreen: '\u0138',
+            KHcy: '\u0425',
+            khcy: '\u0445',
+            KJcy: '\u040C',
+            kjcy: '\u045C',
+            Kopf: '\uD835\uDD42',
+            kopf: '\uD835\uDD5C',
+            Kscr: '\uD835\uDCA6',
+            kscr: '\uD835\uDCC0',
+            lAarr: '\u21DA',
+            Lacute: '\u0139',
+            lacute: '\u013A',
+            laemptyv: '\u29B4',
+            lagran: '\u2112',
+            Lambda: '\u039B',
+            lambda: '\u03BB',
+            Lang: '\u27EA',
+            lang: '\u27E8',
+            langd: '\u2991',
+            langle: '\u27E8',
+            lap: '\u2A85',
+            Laplacetrf: '\u2112',
+            laquo: '\u00AB',
+            Larr: '\u219E',
+            lArr: '\u21D0',
+            larr: '\u2190',
+            larrb: '\u21E4',
+            larrbfs: '\u291F',
+            larrfs: '\u291D',
+            larrhk: '\u21A9',
+            larrlp: '\u21AB',
+            larrpl: '\u2939',
+            larrsim: '\u2973',
+            larrtl: '\u21A2',
+            lat: '\u2AAB',
+            lAtail: '\u291B',
+            latail: '\u2919',
+            late: '\u2AAD',
+            lates: '\u2AAD\uFE00',
+            lBarr: '\u290E',
+            lbarr: '\u290C',
+            lbbrk: '\u2772',
+            lbrace: '\u007B',
+            lbrack: '\u005B',
+            lbrke: '\u298B',
+            lbrksld: '\u298F',
+            lbrkslu: '\u298D',
+            Lcaron: '\u013D',
+            lcaron: '\u013E',
+            Lcedil: '\u013B',
+            lcedil: '\u013C',
+            lceil: '\u2308',
+            lcub: '\u007B',
+            Lcy: '\u041B',
+            lcy: '\u043B',
+            ldca: '\u2936',
+            ldquo: '\u201C',
+            ldquor: '\u201E',
+            ldrdhar: '\u2967',
+            ldrushar: '\u294B',
+            ldsh: '\u21B2',
+            lE: '\u2266',
+            le: '\u2264',
+            LeftAngleBracket: '\u27E8',
+            LeftArrow: '\u2190',
+            Leftarrow: '\u21D0',
+            leftarrow: '\u2190',
+            LeftArrowBar: '\u21E4',
+            LeftArrowRightArrow: '\u21C6',
+            leftarrowtail: '\u21A2',
+            LeftCeiling: '\u2308',
+            LeftDoubleBracket: '\u27E6',
+            LeftDownTeeVector: '\u2961',
+            LeftDownVector: '\u21C3',
+            LeftDownVectorBar: '\u2959',
+            LeftFloor: '\u230A',
+            leftharpoondown: '\u21BD',
+            leftharpoonup: '\u21BC',
+            leftleftarrows: '\u21C7',
+            LeftRightArrow: '\u2194',
+            Leftrightarrow: '\u21D4',
+            leftrightarrow: '\u2194',
+            leftrightarrows: '\u21C6',
+            leftrightharpoons: '\u21CB',
+            leftrightsquigarrow: '\u21AD',
+            LeftRightVector: '\u294E',
+            LeftTee: '\u22A3',
+            LeftTeeArrow: '\u21A4',
+            LeftTeeVector: '\u295A',
+            leftthreetimes: '\u22CB',
+            LeftTriangle: '\u22B2',
+            LeftTriangleBar: '\u29CF',
+            LeftTriangleEqual: '\u22B4',
+            LeftUpDownVector: '\u2951',
+            LeftUpTeeVector: '\u2960',
+            LeftUpVector: '\u21BF',
+            LeftUpVectorBar: '\u2958',
+            LeftVector: '\u21BC',
+            LeftVectorBar: '\u2952',
+            lEg: '\u2A8B',
+            leg: '\u22DA',
+            leq: '\u2264',
+            leqq: '\u2266',
+            leqslant: '\u2A7D',
+            les: '\u2A7D',
+            lescc: '\u2AA8',
+            lesdot: '\u2A7F',
+            lesdoto: '\u2A81',
+            lesdotor: '\u2A83',
+            lesg: '\u22DA\uFE00',
+            lesges: '\u2A93',
+            lessapprox: '\u2A85',
+            lessdot: '\u22D6',
+            lesseqgtr: '\u22DA',
+            lesseqqgtr: '\u2A8B',
+            LessEqualGreater: '\u22DA',
+            LessFullEqual: '\u2266',
+            LessGreater: '\u2276',
+            lessgtr: '\u2276',
+            LessLess: '\u2AA1',
+            lesssim: '\u2272',
+            LessSlantEqual: '\u2A7D',
+            LessTilde: '\u2272',
+            lfisht: '\u297C',
+            lfloor: '\u230A',
+            Lfr: '\uD835\uDD0F',
+            lfr: '\uD835\uDD29',
+            lg: '\u2276',
+            lgE: '\u2A91',
+            lHar: '\u2962',
+            lhard: '\u21BD',
+            lharu: '\u21BC',
+            lharul: '\u296A',
+            lhblk: '\u2584',
+            LJcy: '\u0409',
+            ljcy: '\u0459',
+            Ll: '\u22D8',
+            ll: '\u226A',
+            llarr: '\u21C7',
+            llcorner: '\u231E',
+            Lleftarrow: '\u21DA',
+            llhard: '\u296B',
+            lltri: '\u25FA',
+            Lmidot: '\u013F',
+            lmidot: '\u0140',
+            lmoust: '\u23B0',
+            lmoustache: '\u23B0',
+            lnap: '\u2A89',
+            lnapprox: '\u2A89',
+            lnE: '\u2268',
+            lne: '\u2A87',
+            lneq: '\u2A87',
+            lneqq: '\u2268',
+            lnsim: '\u22E6',
+            loang: '\u27EC',
+            loarr: '\u21FD',
+            lobrk: '\u27E6',
+            LongLeftArrow: '\u27F5',
+            Longleftarrow: '\u27F8',
+            longleftarrow: '\u27F5',
+            LongLeftRightArrow: '\u27F7',
+            Longleftrightarrow: '\u27FA',
+            longleftrightarrow: '\u27F7',
+            longmapsto: '\u27FC',
+            LongRightArrow: '\u27F6',
+            Longrightarrow: '\u27F9',
+            longrightarrow: '\u27F6',
+            looparrowleft: '\u21AB',
+            looparrowright: '\u21AC',
+            lopar: '\u2985',
+            Lopf: '\uD835\uDD43',
+            lopf: '\uD835\uDD5D',
+            loplus: '\u2A2D',
+            lotimes: '\u2A34',
+            lowast: '\u2217',
+            lowbar: '\u005F',
+            LowerLeftArrow: '\u2199',
+            LowerRightArrow: '\u2198',
+            loz: '\u25CA',
+            lozenge: '\u25CA',
+            lozf: '\u29EB',
+            lpar: '\u0028',
+            lparlt: '\u2993',
+            lrarr: '\u21C6',
+            lrcorner: '\u231F',
+            lrhar: '\u21CB',
+            lrhard: '\u296D',
+            lrm: '\u200E',
+            lrtri: '\u22BF',
+            lsaquo: '\u2039',
+            Lscr: '\u2112',
+            lscr: '\uD835\uDCC1',
+            Lsh: '\u21B0',
+            lsh: '\u21B0',
+            lsim: '\u2272',
+            lsime: '\u2A8D',
+            lsimg: '\u2A8F',
+            lsqb: '\u005B',
+            lsquo: '\u2018',
+            lsquor: '\u201A',
+            Lstrok: '\u0141',
+            lstrok: '\u0142',
+            Lt: '\u226A',
+            LT: '\u003C',
+            lt: '\u003C',
+            ltcc: '\u2AA6',
+            ltcir: '\u2A79',
+            ltdot: '\u22D6',
+            lthree: '\u22CB',
+            ltimes: '\u22C9',
+            ltlarr: '\u2976',
+            ltquest: '\u2A7B',
+            ltri: '\u25C3',
+            ltrie: '\u22B4',
+            ltrif: '\u25C2',
+            ltrPar: '\u2996',
+            lurdshar: '\u294A',
+            luruhar: '\u2966',
+            lvertneqq: '\u2268\uFE00',
+            lvnE: '\u2268\uFE00',
+            macr: '\u00AF',
+            male: '\u2642',
+            malt: '\u2720',
+            maltese: '\u2720',
+            Map: '\u2905',
+            map: '\u21A6',
+            mapsto: '\u21A6',
+            mapstodown: '\u21A7',
+            mapstoleft: '\u21A4',
+            mapstoup: '\u21A5',
+            marker: '\u25AE',
+            mcomma: '\u2A29',
+            Mcy: '\u041C',
+            mcy: '\u043C',
+            mdash: '\u2014',
+            mDDot: '\u223A',
+            measuredangle: '\u2221',
+            MediumSpace: '\u205F',
+            Mellintrf: '\u2133',
+            Mfr: '\uD835\uDD10',
+            mfr: '\uD835\uDD2A',
+            mho: '\u2127',
+            micro: '\u00B5',
+            mid: '\u2223',
+            midast: '\u002A',
+            midcir: '\u2AF0',
+            middot: '\u00B7',
+            minus: '\u2212',
+            minusb: '\u229F',
+            minusd: '\u2238',
+            minusdu: '\u2A2A',
+            MinusPlus: '\u2213',
+            mlcp: '\u2ADB',
+            mldr: '\u2026',
+            mnplus: '\u2213',
+            models: '\u22A7',
+            Mopf: '\uD835\uDD44',
+            mopf: '\uD835\uDD5E',
+            mp: '\u2213',
+            Mscr: '\u2133',
+            mscr: '\uD835\uDCC2',
+            mstpos: '\u223E',
+            Mu: '\u039C',
+            mu: '\u03BC',
+            multimap: '\u22B8',
+            mumap: '\u22B8',
+            nabla: '\u2207',
+            Nacute: '\u0143',
+            nacute: '\u0144',
+            nang: '\u2220\u20D2',
+            nap: '\u2249',
+            napE: '\u2A70\u0338',
+            napid: '\u224B\u0338',
+            napos: '\u0149',
+            napprox: '\u2249',
+            natur: '\u266E',
+            natural: '\u266E',
+            naturals: '\u2115',
+            nbsp: '\u00A0',
+            nbump: '\u224E\u0338',
+            nbumpe: '\u224F\u0338',
+            ncap: '\u2A43',
+            Ncaron: '\u0147',
+            ncaron: '\u0148',
+            Ncedil: '\u0145',
+            ncedil: '\u0146',
+            ncong: '\u2247',
+            ncongdot: '\u2A6D\u0338',
+            ncup: '\u2A42',
+            Ncy: '\u041D',
+            ncy: '\u043D',
+            ndash: '\u2013',
+            ne: '\u2260',
+            nearhk: '\u2924',
+            neArr: '\u21D7',
+            nearr: '\u2197',
+            nearrow: '\u2197',
+            nedot: '\u2250\u0338',
+            NegativeMediumSpace: '\u200B',
+            NegativeThickSpace: '\u200B',
+            NegativeThinSpace: '\u200B',
+            NegativeVeryThinSpace: '\u200B',
+            nequiv: '\u2262',
+            nesear: '\u2928',
+            nesim: '\u2242\u0338',
+            NestedGreaterGreater: '\u226B',
+            NestedLessLess: '\u226A',
+            NewLine: '\u000A',
+            nexist: '\u2204',
+            nexists: '\u2204',
+            Nfr: '\uD835\uDD11',
+            nfr: '\uD835\uDD2B',
+            ngE: '\u2267\u0338',
+            nge: '\u2271',
+            ngeq: '\u2271',
+            ngeqq: '\u2267\u0338',
+            ngeqslant: '\u2A7E\u0338',
+            nges: '\u2A7E\u0338',
+            nGg: '\u22D9\u0338',
+            ngsim: '\u2275',
+            nGt: '\u226B\u20D2',
+            ngt: '\u226F',
+            ngtr: '\u226F',
+            nGtv: '\u226B\u0338',
+            nhArr: '\u21CE',
+            nharr: '\u21AE',
+            nhpar: '\u2AF2',
+            ni: '\u220B',
+            nis: '\u22FC',
+            nisd: '\u22FA',
+            niv: '\u220B',
+            NJcy: '\u040A',
+            njcy: '\u045A',
+            nlArr: '\u21CD',
+            nlarr: '\u219A',
+            nldr: '\u2025',
+            nlE: '\u2266\u0338',
+            nle: '\u2270',
+            nLeftarrow: '\u21CD',
+            nleftarrow: '\u219A',
+            nLeftrightarrow: '\u21CE',
+            nleftrightarrow: '\u21AE',
+            nleq: '\u2270',
+            nleqq: '\u2266\u0338',
+            nleqslant: '\u2A7D\u0338',
+            nles: '\u2A7D\u0338',
+            nless: '\u226E',
+            nLl: '\u22D8\u0338',
+            nlsim: '\u2274',
+            nLt: '\u226A\u20D2',
+            nlt: '\u226E',
+            nltri: '\u22EA',
+            nltrie: '\u22EC',
+            nLtv: '\u226A\u0338',
+            nmid: '\u2224',
+            NoBreak: '\u2060',
+            NonBreakingSpace: '\u00A0',
+            Nopf: '\u2115',
+            nopf: '\uD835\uDD5F',
+            Not: '\u2AEC',
+            not: '\u00AC',
+            NotCongruent: '\u2262',
+            NotCupCap: '\u226D',
+            NotDoubleVerticalBar: '\u2226',
+            NotElement: '\u2209',
+            NotEqual: '\u2260',
+            NotEqualTilde: '\u2242\u0338',
+            NotExists: '\u2204',
+            NotGreater: '\u226F',
+            NotGreaterEqual: '\u2271',
+            NotGreaterFullEqual: '\u2267\u0338',
+            NotGreaterGreater: '\u226B\u0338',
+            NotGreaterLess: '\u2279',
+            NotGreaterSlantEqual: '\u2A7E\u0338',
+            NotGreaterTilde: '\u2275',
+            NotHumpDownHump: '\u224E\u0338',
+            NotHumpEqual: '\u224F\u0338',
+            notin: '\u2209',
+            notindot: '\u22F5\u0338',
+            notinE: '\u22F9\u0338',
+            notinva: '\u2209',
+            notinvb: '\u22F7',
+            notinvc: '\u22F6',
+            NotLeftTriangle: '\u22EA',
+            NotLeftTriangleBar: '\u29CF\u0338',
+            NotLeftTriangleEqual: '\u22EC',
+            NotLess: '\u226E',
+            NotLessEqual: '\u2270',
+            NotLessGreater: '\u2278',
+            NotLessLess: '\u226A\u0338',
+            NotLessSlantEqual: '\u2A7D\u0338',
+            NotLessTilde: '\u2274',
+            NotNestedGreaterGreater: '\u2AA2\u0338',
+            NotNestedLessLess: '\u2AA1\u0338',
+            notni: '\u220C',
+            notniva: '\u220C',
+            notnivb: '\u22FE',
+            notnivc: '\u22FD',
+            NotPrecedes: '\u2280',
+            NotPrecedesEqual: '\u2AAF\u0338',
+            NotPrecedesSlantEqual: '\u22E0',
+            NotReverseElement: '\u220C',
+            NotRightTriangle: '\u22EB',
+            NotRightTriangleBar: '\u29D0\u0338',
+            NotRightTriangleEqual: '\u22ED',
+            NotSquareSubset: '\u228F\u0338',
+            NotSquareSubsetEqual: '\u22E2',
+            NotSquareSuperset: '\u2290\u0338',
+            NotSquareSupersetEqual: '\u22E3',
+            NotSubset: '\u2282\u20D2',
+            NotSubsetEqual: '\u2288',
+            NotSucceeds: '\u2281',
+            NotSucceedsEqual: '\u2AB0\u0338',
+            NotSucceedsSlantEqual: '\u22E1',
+            NotSucceedsTilde: '\u227F\u0338',
+            NotSuperset: '\u2283\u20D2',
+            NotSupersetEqual: '\u2289',
+            NotTilde: '\u2241',
+            NotTildeEqual: '\u2244',
+            NotTildeFullEqual: '\u2247',
+            NotTildeTilde: '\u2249',
+            NotVerticalBar: '\u2224',
+            npar: '\u2226',
+            nparallel: '\u2226',
+            nparsl: '\u2AFD\u20E5',
+            npart: '\u2202\u0338',
+            npolint: '\u2A14',
+            npr: '\u2280',
+            nprcue: '\u22E0',
+            npre: '\u2AAF\u0338',
+            nprec: '\u2280',
+            npreceq: '\u2AAF\u0338',
+            nrArr: '\u21CF',
+            nrarr: '\u219B',
+            nrarrc: '\u2933\u0338',
+            nrarrw: '\u219D\u0338',
+            nRightarrow: '\u21CF',
+            nrightarrow: '\u219B',
+            nrtri: '\u22EB',
+            nrtrie: '\u22ED',
+            nsc: '\u2281',
+            nsccue: '\u22E1',
+            nsce: '\u2AB0\u0338',
+            Nscr: '\uD835\uDCA9',
+            nscr: '\uD835\uDCC3',
+            nshortmid: '\u2224',
+            nshortparallel: '\u2226',
+            nsim: '\u2241',
+            nsime: '\u2244',
+            nsimeq: '\u2244',
+            nsmid: '\u2224',
+            nspar: '\u2226',
+            nsqsube: '\u22E2',
+            nsqsupe: '\u22E3',
+            nsub: '\u2284',
+            nsubE: '\u2AC5\u0338',
+            nsube: '\u2288',
+            nsubset: '\u2282\u20D2',
+            nsubseteq: '\u2288',
+            nsubseteqq: '\u2AC5\u0338',
+            nsucc: '\u2281',
+            nsucceq: '\u2AB0\u0338',
+            nsup: '\u2285',
+            nsupE: '\u2AC6\u0338',
+            nsupe: '\u2289',
+            nsupset: '\u2283\u20D2',
+            nsupseteq: '\u2289',
+            nsupseteqq: '\u2AC6\u0338',
+            ntgl: '\u2279',
+            Ntilde: '\u00D1',
+            ntilde: '\u00F1',
+            ntlg: '\u2278',
+            ntriangleleft: '\u22EA',
+            ntrianglelefteq: '\u22EC',
+            ntriangleright: '\u22EB',
+            ntrianglerighteq: '\u22ED',
+            Nu: '\u039D',
+            nu: '\u03BD',
+            num: '\u0023',
+            numero: '\u2116',
+            numsp: '\u2007',
+            nvap: '\u224D\u20D2',
+            nVDash: '\u22AF',
+            nVdash: '\u22AE',
+            nvDash: '\u22AD',
+            nvdash: '\u22AC',
+            nvge: '\u2265\u20D2',
+            nvgt: '\u003E\u20D2',
+            nvHarr: '\u2904',
+            nvinfin: '\u29DE',
+            nvlArr: '\u2902',
+            nvle: '\u2264\u20D2',
+            nvlt: '\u003C\u20D2',
+            nvltrie: '\u22B4\u20D2',
+            nvrArr: '\u2903',
+            nvrtrie: '\u22B5\u20D2',
+            nvsim: '\u223C\u20D2',
+            nwarhk: '\u2923',
+            nwArr: '\u21D6',
+            nwarr: '\u2196',
+            nwarrow: '\u2196',
+            nwnear: '\u2927',
+            Oacute: '\u00D3',
+            oacute: '\u00F3',
+            oast: '\u229B',
+            ocir: '\u229A',
+            Ocirc: '\u00D4',
+            ocirc: '\u00F4',
+            Ocy: '\u041E',
+            ocy: '\u043E',
+            odash: '\u229D',
+            Odblac: '\u0150',
+            odblac: '\u0151',
+            odiv: '\u2A38',
+            odot: '\u2299',
+            odsold: '\u29BC',
+            OElig: '\u0152',
+            oelig: '\u0153',
+            ofcir: '\u29BF',
+            Ofr: '\uD835\uDD12',
+            ofr: '\uD835\uDD2C',
+            ogon: '\u02DB',
+            Ograve: '\u00D2',
+            ograve: '\u00F2',
+            ogt: '\u29C1',
+            ohbar: '\u29B5',
+            ohm: '\u03A9',
+            oint: '\u222E',
+            olarr: '\u21BA',
+            olcir: '\u29BE',
+            olcross: '\u29BB',
+            oline: '\u203E',
+            olt: '\u29C0',
+            Omacr: '\u014C',
+            omacr: '\u014D',
+            Omega: '\u03A9',
+            omega: '\u03C9',
+            Omicron: '\u039F',
+            omicron: '\u03BF',
+            omid: '\u29B6',
+            ominus: '\u2296',
+            Oopf: '\uD835\uDD46',
+            oopf: '\uD835\uDD60',
+            opar: '\u29B7',
+            OpenCurlyDoubleQuote: '\u201C',
+            OpenCurlyQuote: '\u2018',
+            operp: '\u29B9',
+            oplus: '\u2295',
+            Or: '\u2A54',
+            or: '\u2228',
+            orarr: '\u21BB',
+            ord: '\u2A5D',
+            order: '\u2134',
+            orderof: '\u2134',
+            ordf: '\u00AA',
+            ordm: '\u00BA',
+            origof: '\u22B6',
+            oror: '\u2A56',
+            orslope: '\u2A57',
+            orv: '\u2A5B',
+            oS: '\u24C8',
+            Oscr: '\uD835\uDCAA',
+            oscr: '\u2134',
+            Oslash: '\u00D8',
+            oslash: '\u00F8',
+            osol: '\u2298',
+            Otilde: '\u00D5',
+            otilde: '\u00F5',
+            Otimes: '\u2A37',
+            otimes: '\u2297',
+            otimesas: '\u2A36',
+            Ouml: '\u00D6',
+            ouml: '\u00F6',
+            ovbar: '\u233D',
+            OverBar: '\u203E',
+            OverBrace: '\u23DE',
+            OverBracket: '\u23B4',
+            OverParenthesis: '\u23DC',
+            par: '\u2225',
+            para: '\u00B6',
+            parallel: '\u2225',
+            parsim: '\u2AF3',
+            parsl: '\u2AFD',
+            part: '\u2202',
+            PartialD: '\u2202',
+            Pcy: '\u041F',
+            pcy: '\u043F',
+            percnt: '\u0025',
+            period: '\u002E',
+            permil: '\u2030',
+            perp: '\u22A5',
+            pertenk: '\u2031',
+            Pfr: '\uD835\uDD13',
+            pfr: '\uD835\uDD2D',
+            Phi: '\u03A6',
+            phi: '\u03C6',
+            phiv: '\u03D5',
+            phmmat: '\u2133',
+            phone: '\u260E',
+            Pi: '\u03A0',
+            pi: '\u03C0',
+            pitchfork: '\u22D4',
+            piv: '\u03D6',
+            planck: '\u210F',
+            planckh: '\u210E',
+            plankv: '\u210F',
+            plus: '\u002B',
+            plusacir: '\u2A23',
+            plusb: '\u229E',
+            pluscir: '\u2A22',
+            plusdo: '\u2214',
+            plusdu: '\u2A25',
+            pluse: '\u2A72',
+            PlusMinus: '\u00B1',
+            plusmn: '\u00B1',
+            plussim: '\u2A26',
+            plustwo: '\u2A27',
+            pm: '\u00B1',
+            Poincareplane: '\u210C',
+            pointint: '\u2A15',
+            Popf: '\u2119',
+            popf: '\uD835\uDD61',
+            pound: '\u00A3',
+            Pr: '\u2ABB',
+            pr: '\u227A',
+            prap: '\u2AB7',
+            prcue: '\u227C',
+            prE: '\u2AB3',
+            pre: '\u2AAF',
+            prec: '\u227A',
+            precapprox: '\u2AB7',
+            preccurlyeq: '\u227C',
+            Precedes: '\u227A',
+            PrecedesEqual: '\u2AAF',
+            PrecedesSlantEqual: '\u227C',
+            PrecedesTilde: '\u227E',
+            preceq: '\u2AAF',
+            precnapprox: '\u2AB9',
+            precneqq: '\u2AB5',
+            precnsim: '\u22E8',
+            precsim: '\u227E',
+            Prime: '\u2033',
+            prime: '\u2032',
+            primes: '\u2119',
+            prnap: '\u2AB9',
+            prnE: '\u2AB5',
+            prnsim: '\u22E8',
+            prod: '\u220F',
+            Product: '\u220F',
+            profalar: '\u232E',
+            profline: '\u2312',
+            profsurf: '\u2313',
+            prop: '\u221D',
+            Proportion: '\u2237',
+            Proportional: '\u221D',
+            propto: '\u221D',
+            prsim: '\u227E',
+            prurel: '\u22B0',
+            Pscr: '\uD835\uDCAB',
+            pscr: '\uD835\uDCC5',
+            Psi: '\u03A8',
+            psi: '\u03C8',
+            puncsp: '\u2008',
+            Qfr: '\uD835\uDD14',
+            qfr: '\uD835\uDD2E',
+            qint: '\u2A0C',
+            Qopf: '\u211A',
+            qopf: '\uD835\uDD62',
+            qprime: '\u2057',
+            Qscr: '\uD835\uDCAC',
+            qscr: '\uD835\uDCC6',
+            quaternions: '\u210D',
+            quatint: '\u2A16',
+            quest: '\u003F',
+            questeq: '\u225F',
+            QUOT: '\u0022',
+            quot: '\u0022',
+            rAarr: '\u21DB',
+            race: '\u223D\u0331',
+            Racute: '\u0154',
+            racute: '\u0155',
+            radic: '\u221A',
+            raemptyv: '\u29B3',
+            Rang: '\u27EB',
+            rang: '\u27E9',
+            rangd: '\u2992',
+            range: '\u29A5',
+            rangle: '\u27E9',
+            raquo: '\u00BB',
+            Rarr: '\u21A0',
+            rArr: '\u21D2',
+            rarr: '\u2192',
+            rarrap: '\u2975',
+            rarrb: '\u21E5',
+            rarrbfs: '\u2920',
+            rarrc: '\u2933',
+            rarrfs: '\u291E',
+            rarrhk: '\u21AA',
+            rarrlp: '\u21AC',
+            rarrpl: '\u2945',
+            rarrsim: '\u2974',
+            Rarrtl: '\u2916',
+            rarrtl: '\u21A3',
+            rarrw: '\u219D',
+            rAtail: '\u291C',
+            ratail: '\u291A',
+            ratio: '\u2236',
+            rationals: '\u211A',
+            RBarr: '\u2910',
+            rBarr: '\u290F',
+            rbarr: '\u290D',
+            rbbrk: '\u2773',
+            rbrace: '\u007D',
+            rbrack: '\u005D',
+            rbrke: '\u298C',
+            rbrksld: '\u298E',
+            rbrkslu: '\u2990',
+            Rcaron: '\u0158',
+            rcaron: '\u0159',
+            Rcedil: '\u0156',
+            rcedil: '\u0157',
+            rceil: '\u2309',
+            rcub: '\u007D',
+            Rcy: '\u0420',
+            rcy: '\u0440',
+            rdca: '\u2937',
+            rdldhar: '\u2969',
+            rdquo: '\u201D',
+            rdquor: '\u201D',
+            rdsh: '\u21B3',
+            Re: '\u211C',
+            real: '\u211C',
+            realine: '\u211B',
+            realpart: '\u211C',
+            reals: '\u211D',
+            rect: '\u25AD',
+            REG: '\u00AE',
+            reg: '\u00AE',
+            ReverseElement: '\u220B',
+            ReverseEquilibrium: '\u21CB',
+            ReverseUpEquilibrium: '\u296F',
+            rfisht: '\u297D',
+            rfloor: '\u230B',
+            Rfr: '\u211C',
+            rfr: '\uD835\uDD2F',
+            rHar: '\u2964',
+            rhard: '\u21C1',
+            rharu: '\u21C0',
+            rharul: '\u296C',
+            Rho: '\u03A1',
+            rho: '\u03C1',
+            rhov: '\u03F1',
+            RightAngleBracket: '\u27E9',
+            RightArrow: '\u2192',
+            Rightarrow: '\u21D2',
+            rightarrow: '\u2192',
+            RightArrowBar: '\u21E5',
+            RightArrowLeftArrow: '\u21C4',
+            rightarrowtail: '\u21A3',
+            RightCeiling: '\u2309',
+            RightDoubleBracket: '\u27E7',
+            RightDownTeeVector: '\u295D',
+            RightDownVector: '\u21C2',
+            RightDownVectorBar: '\u2955',
+            RightFloor: '\u230B',
+            rightharpoondown: '\u21C1',
+            rightharpoonup: '\u21C0',
+            rightleftarrows: '\u21C4',
+            rightleftharpoons: '\u21CC',
+            rightrightarrows: '\u21C9',
+            rightsquigarrow: '\u219D',
+            RightTee: '\u22A2',
+            RightTeeArrow: '\u21A6',
+            RightTeeVector: '\u295B',
+            rightthreetimes: '\u22CC',
+            RightTriangle: '\u22B3',
+            RightTriangleBar: '\u29D0',
+            RightTriangleEqual: '\u22B5',
+            RightUpDownVector: '\u294F',
+            RightUpTeeVector: '\u295C',
+            RightUpVector: '\u21BE',
+            RightUpVectorBar: '\u2954',
+            RightVector: '\u21C0',
+            RightVectorBar: '\u2953',
+            ring: '\u02DA',
+            risingdotseq: '\u2253',
+            rlarr: '\u21C4',
+            rlhar: '\u21CC',
+            rlm: '\u200F',
+            rmoust: '\u23B1',
+            rmoustache: '\u23B1',
+            rnmid: '\u2AEE',
+            roang: '\u27ED',
+            roarr: '\u21FE',
+            robrk: '\u27E7',
+            ropar: '\u2986',
+            Ropf: '\u211D',
+            ropf: '\uD835\uDD63',
+            roplus: '\u2A2E',
+            rotimes: '\u2A35',
+            RoundImplies: '\u2970',
+            rpar: '\u0029',
+            rpargt: '\u2994',
+            rppolint: '\u2A12',
+            rrarr: '\u21C9',
+            Rrightarrow: '\u21DB',
+            rsaquo: '\u203A',
+            Rscr: '\u211B',
+            rscr: '\uD835\uDCC7',
+            Rsh: '\u21B1',
+            rsh: '\u21B1',
+            rsqb: '\u005D',
+            rsquo: '\u2019',
+            rsquor: '\u2019',
+            rthree: '\u22CC',
+            rtimes: '\u22CA',
+            rtri: '\u25B9',
+            rtrie: '\u22B5',
+            rtrif: '\u25B8',
+            rtriltri: '\u29CE',
+            RuleDelayed: '\u29F4',
+            ruluhar: '\u2968',
+            rx: '\u211E',
+            Sacute: '\u015A',
+            sacute: '\u015B',
+            sbquo: '\u201A',
+            Sc: '\u2ABC',
+            sc: '\u227B',
+            scap: '\u2AB8',
+            Scaron: '\u0160',
+            scaron: '\u0161',
+            sccue: '\u227D',
+            scE: '\u2AB4',
+            sce: '\u2AB0',
+            Scedil: '\u015E',
+            scedil: '\u015F',
+            Scirc: '\u015C',
+            scirc: '\u015D',
+            scnap: '\u2ABA',
+            scnE: '\u2AB6',
+            scnsim: '\u22E9',
+            scpolint: '\u2A13',
+            scsim: '\u227F',
+            Scy: '\u0421',
+            scy: '\u0441',
+            sdot: '\u22C5',
+            sdotb: '\u22A1',
+            sdote: '\u2A66',
+            searhk: '\u2925',
+            seArr: '\u21D8',
+            searr: '\u2198',
+            searrow: '\u2198',
+            sect: '\u00A7',
+            semi: '\u003B',
+            seswar: '\u2929',
+            setminus: '\u2216',
+            setmn: '\u2216',
+            sext: '\u2736',
+            Sfr: '\uD835\uDD16',
+            sfr: '\uD835\uDD30',
+            sfrown: '\u2322',
+            sharp: '\u266F',
+            SHCHcy: '\u0429',
+            shchcy: '\u0449',
+            SHcy: '\u0428',
+            shcy: '\u0448',
+            ShortDownArrow: '\u2193',
+            ShortLeftArrow: '\u2190',
+            shortmid: '\u2223',
+            shortparallel: '\u2225',
+            ShortRightArrow: '\u2192',
+            ShortUpArrow: '\u2191',
+            shy: '\u00AD',
+            Sigma: '\u03A3',
+            sigma: '\u03C3',
+            sigmaf: '\u03C2',
+            sigmav: '\u03C2',
+            sim: '\u223C',
+            simdot: '\u2A6A',
+            sime: '\u2243',
+            simeq: '\u2243',
+            simg: '\u2A9E',
+            simgE: '\u2AA0',
+            siml: '\u2A9D',
+            simlE: '\u2A9F',
+            simne: '\u2246',
+            simplus: '\u2A24',
+            simrarr: '\u2972',
+            slarr: '\u2190',
+            SmallCircle: '\u2218',
+            smallsetminus: '\u2216',
+            smashp: '\u2A33',
+            smeparsl: '\u29E4',
+            smid: '\u2223',
+            smile: '\u2323',
+            smt: '\u2AAA',
+            smte: '\u2AAC',
+            smtes: '\u2AAC\uFE00',
+            SOFTcy: '\u042C',
+            softcy: '\u044C',
+            sol: '\u002F',
+            solb: '\u29C4',
+            solbar: '\u233F',
+            Sopf: '\uD835\uDD4A',
+            sopf: '\uD835\uDD64',
+            spades: '\u2660',
+            spadesuit: '\u2660',
+            spar: '\u2225',
+            sqcap: '\u2293',
+            sqcaps: '\u2293\uFE00',
+            sqcup: '\u2294',
+            sqcups: '\u2294\uFE00',
+            Sqrt: '\u221A',
+            sqsub: '\u228F',
+            sqsube: '\u2291',
+            sqsubset: '\u228F',
+            sqsubseteq: '\u2291',
+            sqsup: '\u2290',
+            sqsupe: '\u2292',
+            sqsupset: '\u2290',
+            sqsupseteq: '\u2292',
+            squ: '\u25A1',
+            Square: '\u25A1',
+            square: '\u25A1',
+            SquareIntersection: '\u2293',
+            SquareSubset: '\u228F',
+            SquareSubsetEqual: '\u2291',
+            SquareSuperset: '\u2290',
+            SquareSupersetEqual: '\u2292',
+            SquareUnion: '\u2294',
+            squarf: '\u25AA',
+            squf: '\u25AA',
+            srarr: '\u2192',
+            Sscr: '\uD835\uDCAE',
+            sscr: '\uD835\uDCC8',
+            ssetmn: '\u2216',
+            ssmile: '\u2323',
+            sstarf: '\u22C6',
+            Star: '\u22C6',
+            star: '\u2606',
+            starf: '\u2605',
+            straightepsilon: '\u03F5',
+            straightphi: '\u03D5',
+            strns: '\u00AF',
+            Sub: '\u22D0',
+            sub: '\u2282',
+            subdot: '\u2ABD',
+            subE: '\u2AC5',
+            sube: '\u2286',
+            subedot: '\u2AC3',
+            submult: '\u2AC1',
+            subnE: '\u2ACB',
+            subne: '\u228A',
+            subplus: '\u2ABF',
+            subrarr: '\u2979',
+            Subset: '\u22D0',
+            subset: '\u2282',
+            subseteq: '\u2286',
+            subseteqq: '\u2AC5',
+            SubsetEqual: '\u2286',
+            subsetneq: '\u228A',
+            subsetneqq: '\u2ACB',
+            subsim: '\u2AC7',
+            subsub: '\u2AD5',
+            subsup: '\u2AD3',
+            succ: '\u227B',
+            succapprox: '\u2AB8',
+            succcurlyeq: '\u227D',
+            Succeeds: '\u227B',
+            SucceedsEqual: '\u2AB0',
+            SucceedsSlantEqual: '\u227D',
+            SucceedsTilde: '\u227F',
+            succeq: '\u2AB0',
+            succnapprox: '\u2ABA',
+            succneqq: '\u2AB6',
+            succnsim: '\u22E9',
+            succsim: '\u227F',
+            SuchThat: '\u220B',
+            Sum: '\u2211',
+            sum: '\u2211',
+            sung: '\u266A',
+            Sup: '\u22D1',
+            sup: '\u2283',
+            sup1: '\u00B9',
+            sup2: '\u00B2',
+            sup3: '\u00B3',
+            supdot: '\u2ABE',
+            supdsub: '\u2AD8',
+            supE: '\u2AC6',
+            supe: '\u2287',
+            supedot: '\u2AC4',
+            Superset: '\u2283',
+            SupersetEqual: '\u2287',
+            suphsol: '\u27C9',
+            suphsub: '\u2AD7',
+            suplarr: '\u297B',
+            supmult: '\u2AC2',
+            supnE: '\u2ACC',
+            supne: '\u228B',
+            supplus: '\u2AC0',
+            Supset: '\u22D1',
+            supset: '\u2283',
+            supseteq: '\u2287',
+            supseteqq: '\u2AC6',
+            supsetneq: '\u228B',
+            supsetneqq: '\u2ACC',
+            supsim: '\u2AC8',
+            supsub: '\u2AD4',
+            supsup: '\u2AD6',
+            swarhk: '\u2926',
+            swArr: '\u21D9',
+            swarr: '\u2199',
+            swarrow: '\u2199',
+            swnwar: '\u292A',
+            szlig: '\u00DF',
+            Tab: '\u0009',
+            target: '\u2316',
+            Tau: '\u03A4',
+            tau: '\u03C4',
+            tbrk: '\u23B4',
+            Tcaron: '\u0164',
+            tcaron: '\u0165',
+            Tcedil: '\u0162',
+            tcedil: '\u0163',
+            Tcy: '\u0422',
+            tcy: '\u0442',
+            tdot: '\u20DB',
+            telrec: '\u2315',
+            Tfr: '\uD835\uDD17',
+            tfr: '\uD835\uDD31',
+            there4: '\u2234',
+            Therefore: '\u2234',
+            therefore: '\u2234',
+            Theta: '\u0398',
+            theta: '\u03B8',
+            thetasym: '\u03D1',
+            thetav: '\u03D1',
+            thickapprox: '\u2248',
+            thicksim: '\u223C',
+            ThickSpace: '\u205F\u200A',
+            thinsp: '\u2009',
+            ThinSpace: '\u2009',
+            thkap: '\u2248',
+            thksim: '\u223C',
+            THORN: '\u00DE',
+            thorn: '\u00FE',
+            Tilde: '\u223C',
+            tilde: '\u02DC',
+            TildeEqual: '\u2243',
+            TildeFullEqual: '\u2245',
+            TildeTilde: '\u2248',
+            times: '\u00D7',
+            timesb: '\u22A0',
+            timesbar: '\u2A31',
+            timesd: '\u2A30',
+            tint: '\u222D',
+            toea: '\u2928',
+            top: '\u22A4',
+            topbot: '\u2336',
+            topcir: '\u2AF1',
+            Topf: '\uD835\uDD4B',
+            topf: '\uD835\uDD65',
+            topfork: '\u2ADA',
+            tosa: '\u2929',
+            tprime: '\u2034',
+            TRADE: '\u2122',
+            trade: '\u2122',
+            triangle: '\u25B5',
+            triangledown: '\u25BF',
+            triangleleft: '\u25C3',
+            trianglelefteq: '\u22B4',
+            triangleq: '\u225C',
+            triangleright: '\u25B9',
+            trianglerighteq: '\u22B5',
+            tridot: '\u25EC',
+            trie: '\u225C',
+            triminus: '\u2A3A',
+            TripleDot: '\u20DB',
+            triplus: '\u2A39',
+            trisb: '\u29CD',
+            tritime: '\u2A3B',
+            trpezium: '\u23E2',
+            Tscr: '\uD835\uDCAF',
+            tscr: '\uD835\uDCC9',
+            TScy: '\u0426',
+            tscy: '\u0446',
+            TSHcy: '\u040B',
+            tshcy: '\u045B',
+            Tstrok: '\u0166',
+            tstrok: '\u0167',
+            twixt: '\u226C',
+            twoheadleftarrow: '\u219E',
+            twoheadrightarrow: '\u21A0',
+            Uacute: '\u00DA',
+            uacute: '\u00FA',
+            Uarr: '\u219F',
+            uArr: '\u21D1',
+            uarr: '\u2191',
+            Uarrocir: '\u2949',
+            Ubrcy: '\u040E',
+            ubrcy: '\u045E',
+            Ubreve: '\u016C',
+            ubreve: '\u016D',
+            Ucirc: '\u00DB',
+            ucirc: '\u00FB',
+            Ucy: '\u0423',
+            ucy: '\u0443',
+            udarr: '\u21C5',
+            Udblac: '\u0170',
+            udblac: '\u0171',
+            udhar: '\u296E',
+            ufisht: '\u297E',
+            Ufr: '\uD835\uDD18',
+            ufr: '\uD835\uDD32',
+            Ugrave: '\u00D9',
+            ugrave: '\u00F9',
+            uHar: '\u2963',
+            uharl: '\u21BF',
+            uharr: '\u21BE',
+            uhblk: '\u2580',
+            ulcorn: '\u231C',
+            ulcorner: '\u231C',
+            ulcrop: '\u230F',
+            ultri: '\u25F8',
+            Umacr: '\u016A',
+            umacr: '\u016B',
+            uml: '\u00A8',
+            UnderBar: '\u005F',
+            UnderBrace: '\u23DF',
+            UnderBracket: '\u23B5',
+            UnderParenthesis: '\u23DD',
+            Union: '\u22C3',
+            UnionPlus: '\u228E',
+            Uogon: '\u0172',
+            uogon: '\u0173',
+            Uopf: '\uD835\uDD4C',
+            uopf: '\uD835\uDD66',
+            UpArrow: '\u2191',
+            Uparrow: '\u21D1',
+            uparrow: '\u2191',
+            UpArrowBar: '\u2912',
+            UpArrowDownArrow: '\u21C5',
+            UpDownArrow: '\u2195',
+            Updownarrow: '\u21D5',
+            updownarrow: '\u2195',
+            UpEquilibrium: '\u296E',
+            upharpoonleft: '\u21BF',
+            upharpoonright: '\u21BE',
+            uplus: '\u228E',
+            UpperLeftArrow: '\u2196',
+            UpperRightArrow: '\u2197',
+            Upsi: '\u03D2',
+            upsi: '\u03C5',
+            upsih: '\u03D2',
+            Upsilon: '\u03A5',
+            upsilon: '\u03C5',
+            UpTee: '\u22A5',
+            UpTeeArrow: '\u21A5',
+            upuparrows: '\u21C8',
+            urcorn: '\u231D',
+            urcorner: '\u231D',
+            urcrop: '\u230E',
+            Uring: '\u016E',
+            uring: '\u016F',
+            urtri: '\u25F9',
+            Uscr: '\uD835\uDCB0',
+            uscr: '\uD835\uDCCA',
+            utdot: '\u22F0',
+            Utilde: '\u0168',
+            utilde: '\u0169',
+            utri: '\u25B5',
+            utrif: '\u25B4',
+            uuarr: '\u21C8',
+            Uuml: '\u00DC',
+            uuml: '\u00FC',
+            uwangle: '\u29A7',
+            vangrt: '\u299C',
+            varepsilon: '\u03F5',
+            varkappa: '\u03F0',
+            varnothing: '\u2205',
+            varphi: '\u03D5',
+            varpi: '\u03D6',
+            varpropto: '\u221D',
+            vArr: '\u21D5',
+            varr: '\u2195',
+            varrho: '\u03F1',
+            varsigma: '\u03C2',
+            varsubsetneq: '\u228A\uFE00',
+            varsubsetneqq: '\u2ACB\uFE00',
+            varsupsetneq: '\u228B\uFE00',
+            varsupsetneqq: '\u2ACC\uFE00',
+            vartheta: '\u03D1',
+            vartriangleleft: '\u22B2',
+            vartriangleright: '\u22B3',
+            Vbar: '\u2AEB',
+            vBar: '\u2AE8',
+            vBarv: '\u2AE9',
+            Vcy: '\u0412',
+            vcy: '\u0432',
+            VDash: '\u22AB',
+            Vdash: '\u22A9',
+            vDash: '\u22A8',
+            vdash: '\u22A2',
+            Vdashl: '\u2AE6',
+            Vee: '\u22C1',
+            vee: '\u2228',
+            veebar: '\u22BB',
+            veeeq: '\u225A',
+            vellip: '\u22EE',
+            Verbar: '\u2016',
+            verbar: '\u007C',
+            Vert: '\u2016',
+            vert: '\u007C',
+            VerticalBar: '\u2223',
+            VerticalLine: '\u007C',
+            VerticalSeparator: '\u2758',
+            VerticalTilde: '\u2240',
+            VeryThinSpace: '\u200A',
+            Vfr: '\uD835\uDD19',
+            vfr: '\uD835\uDD33',
+            vltri: '\u22B2',
+            vnsub: '\u2282\u20D2',
+            vnsup: '\u2283\u20D2',
+            Vopf: '\uD835\uDD4D',
+            vopf: '\uD835\uDD67',
+            vprop: '\u221D',
+            vrtri: '\u22B3',
+            Vscr: '\uD835\uDCB1',
+            vscr: '\uD835\uDCCB',
+            vsubnE: '\u2ACB\uFE00',
+            vsubne: '\u228A\uFE00',
+            vsupnE: '\u2ACC\uFE00',
+            vsupne: '\u228B\uFE00',
+            Vvdash: '\u22AA',
+            vzigzag: '\u299A',
+            Wcirc: '\u0174',
+            wcirc: '\u0175',
+            wedbar: '\u2A5F',
+            Wedge: '\u22C0',
+            wedge: '\u2227',
+            wedgeq: '\u2259',
+            weierp: '\u2118',
+            Wfr: '\uD835\uDD1A',
+            wfr: '\uD835\uDD34',
+            Wopf: '\uD835\uDD4E',
+            wopf: '\uD835\uDD68',
+            wp: '\u2118',
+            wr: '\u2240',
+            wreath: '\u2240',
+            Wscr: '\uD835\uDCB2',
+            wscr: '\uD835\uDCCC',
+            xcap: '\u22C2',
+            xcirc: '\u25EF',
+            xcup: '\u22C3',
+            xdtri: '\u25BD',
+            Xfr: '\uD835\uDD1B',
+            xfr: '\uD835\uDD35',
+            xhArr: '\u27FA',
+            xharr: '\u27F7',
+            Xi: '\u039E',
+            xi: '\u03BE',
+            xlArr: '\u27F8',
+            xlarr: '\u27F5',
+            xmap: '\u27FC',
+            xnis: '\u22FB',
+            xodot: '\u2A00',
+            Xopf: '\uD835\uDD4F',
+            xopf: '\uD835\uDD69',
+            xoplus: '\u2A01',
+            xotime: '\u2A02',
+            xrArr: '\u27F9',
+            xrarr: '\u27F6',
+            Xscr: '\uD835\uDCB3',
+            xscr: '\uD835\uDCCD',
+            xsqcup: '\u2A06',
+            xuplus: '\u2A04',
+            xutri: '\u25B3',
+            xvee: '\u22C1',
+            xwedge: '\u22C0',
+            Yacute: '\u00DD',
+            yacute: '\u00FD',
+            YAcy: '\u042F',
+            yacy: '\u044F',
+            Ycirc: '\u0176',
+            ycirc: '\u0177',
+            Ycy: '\u042B',
+            ycy: '\u044B',
+            yen: '\u00A5',
+            Yfr: '\uD835\uDD1C',
+            yfr: '\uD835\uDD36',
+            YIcy: '\u0407',
+            yicy: '\u0457',
+            Yopf: '\uD835\uDD50',
+            yopf: '\uD835\uDD6A',
+            Yscr: '\uD835\uDCB4',
+            yscr: '\uD835\uDCCE',
+            YUcy: '\u042E',
+            yucy: '\u044E',
+            Yuml: '\u0178',
+            yuml: '\u00FF',
+            Zacute: '\u0179',
+            zacute: '\u017A',
+            Zcaron: '\u017D',
+            zcaron: '\u017E',
+            Zcy: '\u0417',
+            zcy: '\u0437',
+            Zdot: '\u017B',
+            zdot: '\u017C',
+            zeetrf: '\u2128',
+            ZeroWidthSpace: '\u200B',
+            Zeta: '\u0396',
+            zeta: '\u03B6',
+            Zfr: '\u2128',
+            zfr: '\uD835\uDD37',
+            ZHcy: '\u0416',
+            zhcy: '\u0436',
+            zigrarr: '\u21DD',
+            Zopf: '\u2124',
+            zopf: '\uD835\uDD6B',
+            Zscr: '\uD835\uDCB5',
+            zscr: '\uD835\uDCCF',
+            zwj: '\u200D',
+            zwnj: '\u200C'
         });
 
         /**
@@ -32862,7 +35276,9 @@
                             el.closed = true;
                         case S_ATTR_NOQUOT_VALUE:
                         case S_ATTR:
+                            break;
                         case S_ATTR_SPACE:
+                            el.closed = true;
                             break;
                         //case S_EQ:
                         default:
@@ -33558,7 +35974,7 @@
 
     var DOMParser = domParser.DOMParser;
 
-    /*! @name mpd-parser @version 1.0.1 @license Apache-2.0 */
+    /*! @name mpd-parser @version 1.3.0 @license Apache-2.0 */
     const isObject = obj => {
         return !!obj && typeof obj === 'object';
     };
@@ -33623,6 +36039,7 @@
     };
     var errors = {
         INVALID_NUMBER_OF_PERIOD: 'INVALID_NUMBER_OF_PERIOD',
+        INVALID_NUMBER_OF_CONTENT_STEERING: 'INVALID_NUMBER_OF_CONTENT_STEERING',
         DASH_EMPTY_MANIFEST: 'DASH_EMPTY_MANIFEST',
         DASH_INVALID_XML: 'DASH_INVALID_XML',
         NO_BASE_URL: 'NO_BASE_URL',
@@ -34249,39 +36666,51 @@
     };
     const generateSidxKey = sidx => sidx && sidx.uri + '-' + byteRangeToString(sidx.byterange);
     const mergeDiscontiguousPlaylists = playlists => {
-        const mergedPlaylists = values(playlists.reduce((acc, playlist) => {
-            // assuming playlist IDs are the same across periods
-            // TODO: handle multiperiod where representation sets are not the same
-            // across periods
-            const name = playlist.attributes.id + (playlist.attributes.lang || '');
-            if (!acc[name]) {
-                // First Period
-                acc[name] = playlist;
-                acc[name].attributes.timelineStarts = [];
-            } else {
-                // Subsequent Periods
-                if (playlist.segments) {
-                    // first segment of subsequent periods signal a discontinuity
-                    if (playlist.segments[0]) {
-                        playlist.segments[0].discontinuity = true;
-                    }
-                    acc[name].segments.push(...playlist.segments);
-                } // bubble up contentProtection, this assumes all DRM content
-                // has the same contentProtection
-
-                if (playlist.attributes.contentProtection) {
-                    acc[name].attributes.contentProtection = playlist.attributes.contentProtection;
-                }
+        // Break out playlists into groups based on their baseUrl
+        const playlistsByBaseUrl = playlists.reduce(function (acc, cur) {
+            if (!acc[cur.attributes.baseUrl]) {
+                acc[cur.attributes.baseUrl] = [];
             }
-            acc[name].attributes.timelineStarts.push({
-                // Although they represent the same number, it's important to have both to make it
-                // compatible with HLS potentially having a similar attribute.
-                start: playlist.attributes.periodStart,
-                timeline: playlist.attributes.periodStart
-            });
+            acc[cur.attributes.baseUrl].push(cur);
             return acc;
-        }, {}));
-        return mergedPlaylists.map(playlist => {
+        }, {});
+        let allPlaylists = [];
+        Object.values(playlistsByBaseUrl).forEach(playlistGroup => {
+            const mergedPlaylists = values(playlistGroup.reduce((acc, playlist) => {
+                // assuming playlist IDs are the same across periods
+                // TODO: handle multiperiod where representation sets are not the same
+                // across periods
+                const name = playlist.attributes.id + (playlist.attributes.lang || '');
+                if (!acc[name]) {
+                    // First Period
+                    acc[name] = playlist;
+                    acc[name].attributes.timelineStarts = [];
+                } else {
+                    // Subsequent Periods
+                    if (playlist.segments) {
+                        // first segment of subsequent periods signal a discontinuity
+                        if (playlist.segments[0]) {
+                            playlist.segments[0].discontinuity = true;
+                        }
+                        acc[name].segments.push(...playlist.segments);
+                    } // bubble up contentProtection, this assumes all DRM content
+                    // has the same contentProtection
+
+                    if (playlist.attributes.contentProtection) {
+                        acc[name].attributes.contentProtection = playlist.attributes.contentProtection;
+                    }
+                }
+                acc[name].attributes.timelineStarts.push({
+                    // Although they represent the same number, it's important to have both to make it
+                    // compatible with HLS potentially having a similar attribute.
+                    start: playlist.attributes.periodStart,
+                    timeline: playlist.attributes.periodStart
+                });
+                return acc;
+            }, {}));
+            allPlaylists = allPlaylists.concat(mergedPlaylists);
+        });
+        return allPlaylists.map(playlist => {
             playlist.discontinuityStarts = findIndexes(playlist.segments || [], 'discontinuity');
             return playlist;
         });
@@ -34321,7 +36750,7 @@
             uri: '',
             endList: attributes.type === 'static',
             timeline: attributes.periodStart,
-            resolvedUri: '',
+            resolvedUri: attributes.baseUrl || '',
             targetDuration: attributes.duration,
             discontinuitySequence,
             discontinuityStarts,
@@ -34332,6 +36761,9 @@
         if (attributes.contentProtection) {
             playlist.contentProtection = attributes.contentProtection;
         }
+        if (attributes.serviceLocation) {
+            playlist.attributes.serviceLocation = attributes.serviceLocation;
+        }
         if (sidx) {
             playlist.sidx = sidx;
         }
@@ -34368,7 +36800,7 @@
         if (attributes.codecs) {
             m3u8Attributes.CODECS = attributes.codecs;
         }
-        return {
+        const vttPlaylist = {
             attributes: m3u8Attributes,
             uri: '',
             endList: attributes.type === 'static',
@@ -34381,6 +36813,10 @@
             mediaSequence,
             segments
         };
+        if (attributes.serviceLocation) {
+            vttPlaylist.attributes.serviceLocation = attributes.serviceLocation;
+        }
+        return vttPlaylist;
     };
     const organizeAudioPlaylists = (playlists, sidxMapping = {}, isAudioOnly = false) => {
         let mainPlaylist;
@@ -34418,7 +36854,7 @@
     };
     const organizeVttPlaylists = (playlists, sidxMapping = {}) => {
         return playlists.reduce((a, playlist) => {
-            const label = playlist.attributes.lang || 'text';
+            const label = playlist.attributes.label || playlist.attributes.lang || 'text';
             if (!a[label]) {
                 a[label] = {
                     language: label,
@@ -34481,7 +36917,7 @@
             uri: '',
             endList: attributes.type === 'static',
             timeline: attributes.periodStart,
-            resolvedUri: '',
+            resolvedUri: attributes.baseUrl || '',
             targetDuration: attributes.duration,
             discontinuityStarts,
             timelineStarts: attributes.timelineStarts,
@@ -34493,6 +36929,9 @@
         if (attributes.contentProtection) {
             playlist.contentProtection = attributes.contentProtection;
         }
+        if (attributes.serviceLocation) {
+            playlist.attributes.serviceLocation = attributes.serviceLocation;
+        }
         if (sidx) {
             playlist.sidx = sidx;
         }
@@ -34577,8 +37016,10 @@
     const toM3u8 = ({
                         dashPlaylists,
                         locations,
+                        contentSteering,
                         sidxMapping = {},
-                        previousManifest
+                        previousManifest,
+                        eventStream
                     }) => {
         if (!dashPlaylists.length) {
             return {};
@@ -34615,9 +37056,15 @@
         if (locations) {
             manifest.locations = locations;
         }
+        if (contentSteering) {
+            manifest.contentSteering = contentSteering;
+        }
         if (type === 'dynamic') {
             manifest.suggestedPresentationDelay = suggestedPresentationDelay;
         }
+        if (eventStream && eventStream.length > 0) {
+            manifest.eventStream = eventStream;
+        }
         const isAudioOnly = manifest.playlists.length === 0;
         const organizedAudioGroup = audioPlaylists.length ? organizeAudioPlaylists(audioPlaylists, sidxMapping, isAudioOnly) : null;
         const organizedVttGroup = vttPlaylists.length ? organizeVttPlaylists(vttPlaylists, sidxMapping) : null;
@@ -35324,6 +37771,18 @@
         r(value) {
             return parseInt(value, 10);
         },
+        /**
+         * Specifies the presentationTime.
+         *
+         * @param {string} value
+         *        value of the attribute as a string
+         *
+         * @return {number}
+         *         The parsed presentationTime
+         */
+        presentationTime(value) {
+            return parseInt(value, 10);
+        },
         /**
          * Default parser for all other attributes. Acts as a no-op and just returns the value
          * as a string
@@ -35361,26 +37820,38 @@
         'urn:uuid:1077efec-c0b2-4d02-ace3-3c1e52e2fb4b': 'org.w3.clearkey',
         'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed': 'com.widevine.alpha',
         'urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95': 'com.microsoft.playready',
-        'urn:uuid:f239e769-efa3-4850-9c16-a903c6932efb': 'com.adobe.primetime'
+        'urn:uuid:f239e769-efa3-4850-9c16-a903c6932efb': 'com.adobe.primetime',
+        // ISO_IEC 23009-1_2022 5.8.5.2.2 The mp4 Protection Scheme
+        'urn:mpeg:dash:mp4protection:2011': 'mp4protection'
     };
     /**
      * Builds a list of urls that is the product of the reference urls and BaseURL values
      *
-     * @param {string[]} referenceUrls
-     *        List of reference urls to resolve to
+     * @param {Object[]} references
+     *        List of objects containing the reference URL as well as its attributes
      * @param {Node[]} baseUrlElements
      *        List of BaseURL nodes from the mpd
-     * @return {string[]}
-     *         List of resolved urls
+     * @return {Object[]}
+     *         List of objects with resolved urls and attributes
      */
 
-    const buildBaseUrls = (referenceUrls, baseUrlElements) => {
+    const buildBaseUrls = (references, baseUrlElements) => {
         if (!baseUrlElements.length) {
-            return referenceUrls;
+            return references;
         }
-        return flatten(referenceUrls.map(function (reference) {
+        return flatten(references.map(function (reference) {
             return baseUrlElements.map(function (baseUrlElement) {
-                return resolveUrl$1(reference, getContent(baseUrlElement));
+                const initialBaseUrl = getContent(baseUrlElement);
+                const resolvedBaseUrl = resolveUrl$1(reference.baseUrl, initialBaseUrl);
+                const finalBaseUrl = merge$1(parseAttributes(baseUrlElement), {
+                    baseUrl: resolvedBaseUrl
+                }); // If the URL is resolved, we want to get the serviceLocation from the reference
+                // assuming there is no serviceLocation on the initialBaseUrl
+
+                if (resolvedBaseUrl !== initialBaseUrl && !finalBaseUrl.serviceLocation && reference.serviceLocation) {
+                    finalBaseUrl.serviceLocation = reference.serviceLocation;
+                }
+                return finalBaseUrl;
             });
         }));
     };
@@ -35480,8 +37951,9 @@
      *
      * @param {Object} adaptationSetAttributes
      *        Contains attributes inherited by the AdaptationSet
-     * @param {string[]} adaptationSetBaseUrls
-     *        Contains list of resolved base urls inherited by the AdaptationSet
+     * @param {Object[]} adaptationSetBaseUrls
+     *        List of objects containing resolved base URLs and attributes
+     *        inherited by the AdaptationSet
      * @param {SegmentInformation} adaptationSetSegmentInfo
      *        Contains Segment information for the AdaptationSet
      * @return {inheritBaseUrlsCallback}
@@ -35496,9 +37968,7 @@
         return repBaseUrls.map(baseUrl => {
             return {
                 segmentInfo: merge$1(adaptationSetSegmentInfo, representationSegmentInfo),
-                attributes: merge$1(attributes, {
-                    baseUrl
-                })
+                attributes: merge$1(attributes, baseUrl)
             };
         });
     };
@@ -35603,6 +38073,40 @@
             });
         }
     };
+    /**
+     * A map callback that will parse all event stream data for a collection of periods
+     * DASH ISO_IEC_23009 5.10.2.2
+     * https://dashif-documents.azurewebsites.net/Events/master/event.html#mpd-event-timing
+     *
+     * @param {PeriodInformation} period object containing necessary period information
+     * @return a collection of parsed eventstream event objects
+     */
+
+    const toEventStream = period => {
+        // get and flatten all EventStreams tags and parse attributes and children
+        return flatten(findChildren(period.node, 'EventStream').map(eventStream => {
+            const eventStreamAttributes = parseAttributes(eventStream);
+            const schemeIdUri = eventStreamAttributes.schemeIdUri; // find all Events per EventStream tag and map to return objects
+
+            return findChildren(eventStream, 'Event').map(event => {
+                const eventAttributes = parseAttributes(event);
+                const presentationTime = eventAttributes.presentationTime || 0;
+                const timescale = eventStreamAttributes.timescale || 1;
+                const duration = eventAttributes.duration || 0;
+                const start = presentationTime / timescale + period.attributes.start;
+                return {
+                    schemeIdUri,
+                    value: eventStreamAttributes.value,
+                    id: eventAttributes.id,
+                    start,
+                    end: start + duration / timescale,
+                    messageData: getContent(event) || eventAttributes.messageData,
+                    contentEncoding: eventStreamAttributes.contentEncoding,
+                    presentationTimeOffset: eventStreamAttributes.presentationTimeOffset || 0
+                };
+            });
+        }));
+    };
     /**
      * Maps an AdaptationSet node to a list of Representation information objects
      *
@@ -35620,8 +38124,9 @@
      *
      * @param {Object} periodAttributes
      *        Contains attributes inherited by the Period
-     * @param {string[]} periodBaseUrls
-     *        Contains list of resolved base urls inherited by the Period
+     * @param {Object[]} periodBaseUrls
+     *        Contains list of objects with resolved base urls and attributes
+     *        inherited by the Period
      * @param {string[]} periodSegmentInfo
      *        Contains Segment Information at the period level
      * @return {toRepresentationsCallback}
@@ -35691,8 +38196,9 @@
      *
      * @param {Object} mpdAttributes
      *        Contains attributes inherited by the mpd
-     * @param {string[]} mpdBaseUrls
-     *        Contains list of resolved base urls inherited by the mpd
+     * @param {Object[]} mpdBaseUrls
+     *        Contains list of objects with resolved base urls and attributes
+     *        inherited by the mpd
      * @return {toAdaptationSetsCallback}
      *         Callback map function
      */
@@ -35709,6 +38215,41 @@
         const periodSegmentInfo = getSegmentInformation(period.node);
         return flatten(adaptationSets.map(toRepresentations(periodAttributes, periodBaseUrls, periodSegmentInfo)));
     };
+    /**
+     * Tranforms an array of content steering nodes into an object
+     * containing CDN content steering information from the MPD manifest.
+     *
+     * For more information on the DASH spec for Content Steering parsing, see:
+     * https://dashif.org/docs/DASH-IF-CTS-00XX-Content-Steering-Community-Review.pdf
+     *
+     * @param {Node[]} contentSteeringNodes
+     *        Content steering nodes
+     * @param {Function} eventHandler
+     *        The event handler passed into the parser options to handle warnings
+     * @return {Object}
+     *        Object containing content steering data
+     */
+
+    const generateContentSteeringInformation = (contentSteeringNodes, eventHandler) => {
+        // If there are more than one ContentSteering tags, throw an error
+        if (contentSteeringNodes.length > 1) {
+            eventHandler({
+                type: 'warn',
+                message: 'The MPD manifest should contain no more than one ContentSteering tag'
+            });
+        } // Return a null value if there are no ContentSteering tags
+
+        if (!contentSteeringNodes.length) {
+            return null;
+        }
+        const infoFromContentSteeringTag = merge$1({
+            serverURL: getContent(contentSteeringNodes[0])
+        }, parseAttributes(contentSteeringNodes[0])); // Converts `queryBeforeStart` to a boolean, as well as setting the default value
+        // to `false` if it doesn't exist
+
+        infoFromContentSteeringTag.queryBeforeStart = infoFromContentSteeringTag.queryBeforeStart === 'true';
+        return infoFromContentSteeringTag;
+    };
     /**
      * Gets Period@start property for a given period.
      *
@@ -35785,7 +38326,14 @@
         const {
             manifestUri = '',
             NOW = Date.now(),
-            clientOffset = 0
+            clientOffset = 0,
+            // TODO: For now, we are expecting an eventHandler callback function
+            // to be passed into the mpd parser as an option.
+            // In the future, we should enable stream parsing by using the Stream class from vhs-utils.
+            // This will support new features including a standardized event handler.
+            // See the m3u8 parser for examples of how stream parsing is currently used for HLS parsing.
+            // https://github.com/videojs/vhs-utils/blob/88d6e10c631e57a5af02c5a62bc7376cd456b4f5/src/stream.js#L9
+            eventHandler = function () {}
         } = options;
         const periodNodes = findChildren(mpd, 'Period');
         if (!periodNodes.length) {
@@ -35793,7 +38341,10 @@
         }
         const locations = findChildren(mpd, 'Location');
         const mpdAttributes = parseAttributes(mpd);
-        const mpdBaseUrls = buildBaseUrls([manifestUri], findChildren(mpd, 'BaseURL')); // See DASH spec section 5.3.1.2, Semantics of MPD element. Default type to 'static'.
+        const mpdBaseUrls = buildBaseUrls([{
+            baseUrl: manifestUri
+        }], findChildren(mpd, 'BaseURL'));
+        const contentSteeringNodes = findChildren(mpd, 'ContentSteering'); // See DASH spec section 5.3.1.2, Semantics of MPD element. Default type to 'static'.
 
         mpdAttributes.type = mpdAttributes.type || 'static';
         mpdAttributes.sourceDuration = mpdAttributes.mediaPresentationDuration || 0;
@@ -35824,7 +38375,16 @@
         });
         return {
             locations: mpdAttributes.locations,
-            representationInfo: flatten(periods.map(toAdaptationSets(mpdAttributes, mpdBaseUrls)))
+            contentSteeringInfo: generateContentSteeringInformation(contentSteeringNodes, eventHandler),
+            // TODO: There are occurences where this `representationInfo` array contains undesired
+            // duplicates. This generally occurs when there are multiple BaseURL nodes that are
+            // direct children of the MPD node. When we attempt to resolve URLs from a combination of the
+            // parent BaseURL and a child BaseURL, and the value does not resolve,
+            // we end up returning the child BaseURL multiple times.
+            // We need to determine a way to remove these duplicates in a safe way.
+            // See: https://github.com/videojs/mpd-parser/pull/17#discussion_r162750527
+            representationInfo: flatten(periods.map(toAdaptationSets(mpdAttributes, mpdBaseUrls))),
+            eventStream: flatten(periods.map(toEventStream))
         };
     };
     const stringToMpdXml = manifestString => {
@@ -35837,7 +38397,7 @@
         try {
             xml = parser.parseFromString(manifestString, 'application/xml');
             mpd = xml && xml.documentElement.tagName === 'MPD' ? xml.documentElement : null;
-        } catch (e) {// ie 11 throwsw on invalid xml
+        } catch (e) {// ie 11 throws on invalid xml
         }
         if (!mpd || mpd && mpd.getElementsByTagName('parsererror').length > 0) {
             throw new Error(errors.DASH_INVALID_XML);
@@ -35904,8 +38464,10 @@
         return toM3u8({
             dashPlaylists: playlists,
             locations: parsedManifestInfo.locations,
+            contentSteering: parsedManifestInfo.contentSteeringInfo,
             sidxMapping: options.sidxMapping,
-            previousManifest: options.previousManifest
+            previousManifest: options.previousManifest,
+            eventStream: parsedManifestInfo.eventStream
         });
     };
     /**
@@ -36579,12 +39141,12 @@
     };
     var clock_1 = clock.ONE_SECOND_IN_TS;
 
-    /*! @name @videojs/http-streaming @version 3.0.2 @license Apache-2.0 */
+    /*! @name @videojs/http-streaming @version 3.10.0 @license Apache-2.0 */
 
     /**
      * @file resolve-url.js - Handling how URLs are resolved and manipulated
      */
-    const resolveUrl = resolveUrl$2;
+    const resolveUrl = resolveUrl$1;
     /**
      * If the xhr request was redirected, return the responseURL, otherwise,
      * return the original url.
@@ -37293,9 +39855,13 @@
     const seekable = function (playlist, expired, liveEdgePadding) {
         const useSafeLiveEnd = true;
         const seekableStart = expired || 0;
-        const seekableEnd = playlistEnd(playlist, expired, useSafeLiveEnd, liveEdgePadding);
+        let seekableEnd = playlistEnd(playlist, expired, useSafeLiveEnd, liveEdgePadding);
         if (seekableEnd === null) {
             return createTimeRanges();
+        } // Clamp seekable end since it can not be less than the seekable start
+
+        if (seekableEnd < seekableStart) {
+            seekableEnd = seekableStart;
         }
         return createTimeRanges(seekableStart, seekableEnd);
     };
@@ -37391,6 +39957,26 @@
         for (let i = startIndex; i < partsAndSegments.length; i++) {
             const partAndSegment = partsAndSegments[i];
             time -= partAndSegment.duration;
+            const canUseFudgeFactor = partAndSegment.duration > TIME_FUDGE_FACTOR;
+            const isExactlyAtTheEnd = time === 0;
+            const isExtremelyCloseToTheEnd = canUseFudgeFactor && time + TIME_FUDGE_FACTOR >= 0;
+            if (isExactlyAtTheEnd || isExtremelyCloseToTheEnd) {
+                // 1) We are exactly at the end of the current segment.
+                // 2) We are extremely close to the end of the current segment (The difference is less than  1 / 30).
+                //    We may encounter this situation when
+                //    we don't have exact match between segment duration info in the manifest and the actual duration of the segment
+                //    For example:
+                //    We appended 3 segments 10 seconds each, meaning we should have 30 sec buffered,
+                //    but we the actual buffered is 29.99999
+                //
+                // In both cases:
+                // if we passed current time -> it means that we already played current segment
+                // if we passed buffered.end -> it means that this segment is already loaded and buffered
+                // we should select the next segment if we have one:
+                if (i !== partsAndSegments.length - 1) {
+                    continue;
+                }
+            }
             if (exactManifestTimings) {
                 if (time > 0) {
                     continue;
@@ -37699,7 +40285,9 @@
                 targetDuration = manifest.segments.reduce((acc, s) => Math.max(acc, s.duration), 0);
             }
             if (onwarn) {
-                onwarn(`manifest has no targetDuration defaulting to ${targetDuration}`);
+                onwarn({
+                    message: `manifest has no targetDuration defaulting to ${targetDuration}`
+                });
             }
             manifest.targetDuration = targetDuration;
         }
@@ -37707,7 +40295,9 @@
         if (parts.length && !manifest.partTargetDuration) {
             const partTargetDuration = parts.reduce((acc, p) => Math.max(acc, p.duration), 0);
             if (onwarn) {
-                onwarn(`manifest has no partTargetDuration defaulting to ${partTargetDuration}`);
+                onwarn({
+                    message: `manifest has no partTargetDuration defaulting to ${partTargetDuration}`
+                });
                 log.error('LL-HLS manifest has parts but lacks required #EXT-X-PART-INF:PART-TARGET value. See https://datatracker.ietf.org/doc/html/draft-pantos-hls-rfc8216bis-09#section-4.4.3.7. Playback is not guaranteed.');
             }
             manifest.partTargetDuration = partTargetDuration;
@@ -37926,14 +40516,94 @@
         setupMediaPlaylists(main);
         resolveMediaGroupUris(main);
     };
+    class DateRangesStorage {
+        constructor() {
+            this.offset_ = null;
+            this.pendingDateRanges_ = new Map();
+            this.processedDateRanges_ = new Map();
+        }
+        setOffset(segments = []) {
+            // already set
+            if (this.offset_ !== null) {
+                return;
+            } // no segment to process
 
-    /**
-     * @file playlist-loader.js
-     *
-     * A state machine that manages the loading, caching, and updating of
-     * M3U8 playlists.
-     *
-     */
+            if (!segments.length) {
+                return;
+            }
+            const [firstSegment] = segments; // no program date time
+
+            if (firstSegment.programDateTime === undefined) {
+                return;
+            } // Set offset as ProgramDateTime for the very first segment of the very first playlist load:
+
+            this.offset_ = firstSegment.programDateTime / 1000;
+        }
+        setPendingDateRanges(dateRanges = []) {
+            if (!dateRanges.length) {
+                return;
+            }
+            const [dateRange] = dateRanges;
+            const startTime = dateRange.startDate.getTime();
+            this.trimProcessedDateRanges_(startTime);
+            this.pendingDateRanges_ = dateRanges.reduce((map, pendingDateRange) => {
+                map.set(pendingDateRange.id, pendingDateRange);
+                return map;
+            }, new Map());
+        }
+        processDateRange(dateRange) {
+            this.pendingDateRanges_.delete(dateRange.id);
+            this.processedDateRanges_.set(dateRange.id, dateRange);
+        }
+        getDateRangesToProcess() {
+            if (this.offset_ === null) {
+                return [];
+            }
+            const dateRangeClasses = {};
+            const dateRangesToProcess = [];
+            this.pendingDateRanges_.forEach((dateRange, id) => {
+                if (this.processedDateRanges_.has(id)) {
+                    return;
+                }
+                dateRange.startTime = dateRange.startDate.getTime() / 1000 - this.offset_;
+                dateRange.processDateRange = () => this.processDateRange(dateRange);
+                dateRangesToProcess.push(dateRange);
+                if (!dateRange.class) {
+                    return;
+                }
+                if (dateRangeClasses[dateRange.class]) {
+                    const length = dateRangeClasses[dateRange.class].push(dateRange);
+                    dateRange.classListIndex = length - 1;
+                } else {
+                    dateRangeClasses[dateRange.class] = [dateRange];
+                    dateRange.classListIndex = 0;
+                }
+            });
+            for (const dateRange of dateRangesToProcess) {
+                const classList = dateRangeClasses[dateRange.class] || [];
+                if (dateRange.endDate) {
+                    dateRange.endTime = dateRange.endDate.getTime() / 1000 - this.offset_;
+                } else if (dateRange.endOnNext && classList[dateRange.classListIndex + 1]) {
+                    dateRange.endTime = classList[dateRange.classListIndex + 1].startTime;
+                } else if (dateRange.duration) {
+                    dateRange.endTime = dateRange.startTime + dateRange.duration;
+                } else if (dateRange.plannedDuration) {
+                    dateRange.endTime = dateRange.startTime + dateRange.plannedDuration;
+                } else {
+                    dateRange.endTime = dateRange.startTime;
+                }
+            }
+            return dateRangesToProcess;
+        }
+        trimProcessedDateRanges_(startTime) {
+            const copy = new Map(this.processedDateRanges_);
+            copy.forEach((dateRange, id) => {
+                if (dateRange.startDate.getTime() < startTime) {
+                    this.processedDateRanges_.delete(id);
+                }
+            });
+        }
+    }
     const {
         EventTarget: EventTarget$1
     } = videojs;
@@ -38256,15 +40926,31 @@
             this.src = src;
             this.vhs_ = vhs;
             this.withCredentials = withCredentials;
+            this.addDateRangesToTextTrack_ = options.addDateRangesToTextTrack;
             const vhsOptions = vhs.options_;
             this.customTagParsers = vhsOptions && vhsOptions.customTagParsers || [];
             this.customTagMappers = vhsOptions && vhsOptions.customTagMappers || [];
-            this.llhls = vhsOptions && vhsOptions.llhls; // initialize the loader state
+            this.llhls = vhsOptions && vhsOptions.llhls;
+            this.dateRangesStorage_ = new DateRangesStorage(); // initialize the loader state
 
             this.state = 'HAVE_NOTHING'; // live playlist staleness timeout
 
             this.handleMediaupdatetimeout_ = this.handleMediaupdatetimeout_.bind(this);
             this.on('mediaupdatetimeout', this.handleMediaupdatetimeout_);
+            this.on('loadedplaylist', this.handleLoadedPlaylist_.bind(this));
+        }
+        handleLoadedPlaylist_() {
+            const mediaPlaylist = this.media();
+            if (!mediaPlaylist) {
+                return;
+            }
+            this.dateRangesStorage_.setOffset(mediaPlaylist.segments);
+            this.dateRangesStorage_.setPendingDateRanges(mediaPlaylist.dateRanges);
+            const availableDateRanges = this.dateRangesStorage_.getDateRangesToProcess();
+            if (!availableDateRanges.length || !this.addDateRangesToTextTrack_) {
+                return;
+            }
+            this.addDateRangesToTextTrack_(availableDateRanges);
         }
         handleMediaupdatetimeout_() {
             if (this.state !== 'HAVE_METADATA') {
@@ -38385,6 +41071,7 @@
             this.stopRequest();
             window.clearTimeout(this.mediaUpdateTimeout);
             window.clearTimeout(this.finalRenditionTimeout);
+            this.dateRangesStorage_ = new DateRangesStorage();
             this.off();
         }
         stopRequest() {
@@ -38707,6 +41394,253 @@
             });
             this.trigger('loadedmetadata');
         }
+        /**
+         * Updates or deletes a preexisting pathway clone.
+         * Ensures that all playlists related to the old pathway clone are
+         * either updated or deleted.
+         *
+         * @param {Object} clone On update, the pathway clone object for the newly updated pathway clone.
+         *        On delete, the old pathway clone object to be deleted.
+         * @param {boolean} isUpdate True if the pathway is to be updated,
+         *        false if it is meant to be deleted.
+         */
+
+        updateOrDeleteClone(clone, isUpdate) {
+            const main = this.main;
+            const pathway = clone.ID;
+            let i = main.playlists.length; // Iterate backwards through the playlist so we can remove playlists if necessary.
+
+            while (i--) {
+                const p = main.playlists[i];
+                if (p.attributes['PATHWAY-ID'] === pathway) {
+                    const oldPlaylistUri = p.resolvedUri;
+                    const oldPlaylistId = p.id; // update the indexed playlist and add new playlists by ID and URI
+
+                    if (isUpdate) {
+                        const newPlaylistUri = this.createCloneURI_(p.resolvedUri, clone);
+                        const newPlaylistId = createPlaylistID(pathway, newPlaylistUri);
+                        const attributes = this.createCloneAttributes_(pathway, p.attributes);
+                        const updatedPlaylist = this.createClonePlaylist_(p, newPlaylistId, clone, attributes);
+                        main.playlists[i] = updatedPlaylist;
+                        main.playlists[newPlaylistId] = updatedPlaylist;
+                        main.playlists[newPlaylistUri] = updatedPlaylist;
+                    } else {
+                        // Remove the indexed playlist.
+                        main.playlists.splice(i, 1);
+                    } // Remove playlists by the old ID and URI.
+
+                    delete main.playlists[oldPlaylistId];
+                    delete main.playlists[oldPlaylistUri];
+                }
+            }
+            this.updateOrDeleteCloneMedia(clone, isUpdate);
+        }
+        /**
+         * Updates or deletes media data based on the pathway clone object.
+         * Due to the complexity of the media groups and playlists, in all cases
+         * we remove all of the old media groups and playlists.
+         * On updates, we then create new media groups and playlists based on the
+         * new pathway clone object.
+         *
+         * @param {Object} clone The pathway clone object for the newly updated pathway clone.
+         * @param {boolean} isUpdate True if the pathway is to be updated,
+         *        false if it is meant to be deleted.
+         */
+
+        updateOrDeleteCloneMedia(clone, isUpdate) {
+            const main = this.main;
+            const id = clone.ID;
+            ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(mediaType => {
+                if (!main.mediaGroups[mediaType] || !main.mediaGroups[mediaType][id]) {
+                    return;
+                }
+                for (const groupKey in main.mediaGroups[mediaType]) {
+                    // Remove all media playlists for the media group for this pathway clone.
+                    if (groupKey === id) {
+                        for (const labelKey in main.mediaGroups[mediaType][groupKey]) {
+                            const oldMedia = main.mediaGroups[mediaType][groupKey][labelKey];
+                            oldMedia.playlists.forEach((p, i) => {
+                                const oldMediaPlaylist = main.playlists[p.id];
+                                const oldPlaylistId = oldMediaPlaylist.id;
+                                const oldPlaylistUri = oldMediaPlaylist.resolvedUri;
+                                delete main.playlists[oldPlaylistId];
+                                delete main.playlists[oldPlaylistUri];
+                            });
+                        } // Delete the old media group.
+
+                        delete main.mediaGroups[mediaType][groupKey];
+                    }
+                }
+            }); // Create the new media groups and playlists if there is an update.
+
+            if (isUpdate) {
+                this.createClonedMediaGroups_(clone);
+            }
+        }
+        /**
+         * Given a pathway clone object, clones all necessary playlists.
+         *
+         * @param {Object} clone The pathway clone object.
+         * @param {Object} basePlaylist The original playlist to clone from.
+         */
+
+        addClonePathway(clone, basePlaylist = {}) {
+            const main = this.main;
+            const index = main.playlists.length;
+            const uri = this.createCloneURI_(basePlaylist.resolvedUri, clone);
+            const playlistId = createPlaylistID(clone.ID, uri);
+            const attributes = this.createCloneAttributes_(clone.ID, basePlaylist.attributes);
+            const playlist = this.createClonePlaylist_(basePlaylist, playlistId, clone, attributes);
+            main.playlists[index] = playlist; // add playlist by ID and URI
+
+            main.playlists[playlistId] = playlist;
+            main.playlists[uri] = playlist;
+            this.createClonedMediaGroups_(clone);
+        }
+        /**
+         * Given a pathway clone object we create clones of all media.
+         * In this function, all necessary information and updated playlists
+         * are added to the `mediaGroup` object.
+         * Playlists are also added to the `playlists` array so the media groups
+         * will be properly linked.
+         *
+         * @param {Object} clone The pathway clone object.
+         */
+
+        createClonedMediaGroups_(clone) {
+            const id = clone.ID;
+            const baseID = clone['BASE-ID'];
+            const main = this.main;
+            ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(mediaType => {
+                // If the media type doesn't exist, or there is already a clone, skip
+                // to the next media type.
+                if (!main.mediaGroups[mediaType] || main.mediaGroups[mediaType][id]) {
+                    return;
+                }
+                for (const groupKey in main.mediaGroups[mediaType]) {
+                    if (groupKey === baseID) {
+                        // Create the group.
+                        main.mediaGroups[mediaType][id] = {};
+                    } else {
+                        // There is no need to iterate over label keys in this case.
+                        continue;
+                    }
+                    for (const labelKey in main.mediaGroups[mediaType][groupKey]) {
+                        const oldMedia = main.mediaGroups[mediaType][groupKey][labelKey];
+                        main.mediaGroups[mediaType][id][labelKey] = _extends$1({}, oldMedia);
+                        const newMedia = main.mediaGroups[mediaType][id][labelKey]; // update URIs on the media
+
+                        const newUri = this.createCloneURI_(oldMedia.resolvedUri, clone);
+                        newMedia.resolvedUri = newUri;
+                        newMedia.uri = newUri; // Reset playlists in the new media group.
+
+                        newMedia.playlists = []; // Create new playlists in the newly cloned media group.
+
+                        oldMedia.playlists.forEach((p, i) => {
+                            const oldMediaPlaylist = main.playlists[p.id];
+                            const group = groupID(mediaType, id, labelKey);
+                            const newPlaylistID = createPlaylistID(id, group); // Check to see if it already exists
+
+                            if (oldMediaPlaylist && !main.playlists[newPlaylistID]) {
+                                const newMediaPlaylist = this.createClonePlaylist_(oldMediaPlaylist, newPlaylistID, clone);
+                                const newPlaylistUri = newMediaPlaylist.resolvedUri;
+                                main.playlists[newPlaylistID] = newMediaPlaylist;
+                                main.playlists[newPlaylistUri] = newMediaPlaylist;
+                            }
+                            newMedia.playlists[i] = this.createClonePlaylist_(p, newPlaylistID, clone);
+                        });
+                    }
+                }
+            });
+        }
+        /**
+         * Using the original playlist to be cloned, and the pathway clone object
+         * information, we create a new playlist.
+         *
+         * @param {Object} basePlaylist  The original playlist to be cloned from.
+         * @param {string} id The desired id of the newly cloned playlist.
+         * @param {Object} clone The pathway clone object.
+         * @param {Object} attributes An optional object to populate the `attributes` property in the playlist.
+         *
+         * @return {Object} The combined cloned playlist.
+         */
+
+        createClonePlaylist_(basePlaylist, id, clone, attributes) {
+            const uri = this.createCloneURI_(basePlaylist.resolvedUri, clone);
+            const newProps = {
+                resolvedUri: uri,
+                uri,
+                id
+            }; // Remove all segments from previous playlist in the clone.
+
+            if (basePlaylist.segments) {
+                newProps.segments = [];
+            }
+            if (attributes) {
+                newProps.attributes = attributes;
+            }
+            return merge(basePlaylist, newProps);
+        }
+        /**
+         * Generates an updated URI for a cloned pathway based on the original
+         * pathway's URI and the paramaters from the pathway clone object in the
+         * content steering server response.
+         *
+         * @param {string} baseUri URI to be updated in the cloned pathway.
+         * @param {Object} clone The pathway clone object.
+         *
+         * @return {string} The updated URI for the cloned pathway.
+         */
+
+        createCloneURI_(baseURI, clone) {
+            const uri = new URL(baseURI);
+            uri.hostname = clone['URI-REPLACEMENT'].HOST;
+            const params = clone['URI-REPLACEMENT'].PARAMS; // Add params to the cloned URL.
+
+            for (const key of Object.keys(params)) {
+                uri.searchParams.set(key, params[key]);
+            }
+            return uri.href;
+        }
+        /**
+         * Helper function to create the attributes needed for the new clone.
+         * This mainly adds the necessary media attributes.
+         *
+         * @param {string} id The pathway clone object ID.
+         * @param {Object} oldAttributes The old attributes to compare to.
+         * @return {Object} The new attributes to add to the playlist.
+         */
+
+        createCloneAttributes_(id, oldAttributes) {
+            const attributes = {
+                ['PATHWAY-ID']: id
+            };
+            ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(mediaType => {
+                if (oldAttributes[mediaType]) {
+                    attributes[mediaType] = id;
+                }
+            });
+            return attributes;
+        }
+        /**
+         * Returns the key ID set from a playlist
+         *
+         * @param {playlist} playlist to fetch the key ID set from.
+         * @return a Set of 32 digit hex strings that represent the unique keyIds for that playlist.
+         */
+
+        getKeyIdSet(playlist) {
+            if (playlist.contentProtection) {
+                const keyIds = new Set();
+                for (const keysystem in playlist.contentProtection) {
+                    const keyId = playlist.contentProtection[keysystem].attributes.keyId;
+                    if (keyId) {
+                        keyIds.add(keyId.toLowerCase());
+                    }
+                }
+                return keyIds;
+            }
+        }
     }
 
     /**
@@ -38742,6 +41676,41 @@
         }
         callback(error, request);
     };
+    /**
+     * Iterates over the request hooks Set and calls them in order
+     *
+     * @param {Set} hooks the hook Set to iterate over
+     * @param {Object} options the request options to pass to the xhr wrapper
+     * @return the callback hook function return value, the modified or new options Object.
+     */
+
+    const callAllRequestHooks = (requestSet, options) => {
+        if (!requestSet || !requestSet.size) {
+            return;
+        }
+        let newOptions = options;
+        requestSet.forEach(requestCallback => {
+            newOptions = requestCallback(newOptions);
+        });
+        return newOptions;
+    };
+    /**
+     * Iterates over the response hooks Set and calls them in order.
+     *
+     * @param {Set} hooks the hook Set to iterate over
+     * @param {Object} request the xhr request object
+     * @param {Object} error the xhr error object
+     * @param {Object} response the xhr response object
+     */
+
+    const callAllResponseHooks = (responseSet, request, error, response) => {
+        if (!responseSet || !responseSet.size) {
+            return;
+        }
+        responseSet.forEach(responseCallback => {
+            responseCallback(request, error, response);
+        });
+    };
     const xhrFactory = function () {
         const xhr = function XhrFunction(options, callback) {
             // Add a default timeout
@@ -38749,18 +41718,28 @@
                 timeout: 45e3
             }, options); // Allow an optional user-specified function to modify the option
             // object before we construct the xhr request
+            // TODO: Remove beforeRequest in the next major release.
 
-            const beforeRequest = XhrFunction.beforeRequest || videojs.Vhs.xhr.beforeRequest;
+            const beforeRequest = XhrFunction.beforeRequest || videojs.Vhs.xhr.beforeRequest; // onRequest and onResponse hooks as a Set, at either the player or global level.
+            // TODO: new Set added here for beforeRequest alias. Remove this when beforeRequest is removed.
+
+            const _requestCallbackSet = XhrFunction._requestCallbackSet || videojs.Vhs.xhr._requestCallbackSet || new Set();
+            const _responseCallbackSet = XhrFunction._responseCallbackSet || videojs.Vhs.xhr._responseCallbackSet;
             if (beforeRequest && typeof beforeRequest === 'function') {
-                const newOptions = beforeRequest(options);
-                if (newOptions) {
-                    options = newOptions;
-                }
+                videojs.log.warn('beforeRequest is deprecated, use onRequest instead.');
+                _requestCallbackSet.add(beforeRequest);
             } // Use the standard videojs.xhr() method unless `videojs.Vhs.xhr` has been overriden
             // TODO: switch back to videojs.Vhs.xhr.name === 'XhrFunction' when we drop IE11
 
-            const xhrMethod = videojs.Vhs.xhr.original === true ? videojsXHR : videojs.Vhs.xhr;
-            const request = xhrMethod(options, function (error, response) {
+            const xhrMethod = videojs.Vhs.xhr.original === true ? videojsXHR : videojs.Vhs.xhr; // call all registered onRequest hooks, assign new options.
+
+            const beforeRequestOptions = callAllRequestHooks(_requestCallbackSet, options); // Remove the beforeRequest function from the hooks set so stale beforeRequest functions are not called.
+
+            _requestCallbackSet.delete(beforeRequest); // xhrMethod will call XMLHttpRequest.open and XMLHttpRequest.send
+
+            const request = xhrMethod(beforeRequestOptions || options, function (error, response) {
+                // call all registered onResponse hooks
+                callAllResponseHooks(_responseCallbackSet, request, error, response);
                 return callbackWrapper(request, error, response, callback);
             });
             const originalAbort = request.abort;
@@ -38998,13 +41977,13 @@
             return null;
         }
         let segment = playlist.segments[0];
-        if (dateTimeObject < segment.dateTimeObject) {
+        if (dateTimeObject < new Date(segment.dateTimeObject)) {
             // Requested time is before stream start.
             return null;
         }
         for (let i = 0; i < playlist.segments.length - 1; i++) {
             segment = playlist.segments[i];
-            const nextSegmentStart = playlist.segments[i + 1].dateTimeObject;
+            const nextSegmentStart = new Date(playlist.segments[i + 1].dateTimeObject);
             if (dateTimeObject < nextSegmentStart) {
                 break;
             }
@@ -39017,7 +41996,7 @@
             // Beyond the end of the stream, or our best guess of the end of the stream.
             return null;
         }
-        if (dateTimeObject > lastSegmentStart) {
+        if (dateTimeObject > new Date(lastSegmentStart)) {
             segment = lastSegment;
         }
         return {
@@ -39573,6 +42552,7 @@
             } = options;
             this.vhs_ = vhs;
             this.withCredentials = withCredentials;
+            this.addMetadataToTextTrack = options.addMetadataToTextTrack;
             if (!srcUrlOrPlaylist) {
                 throw new Error('A non-empty playlist URL or object is required');
             } // event naming?
@@ -39967,6 +42947,7 @@
             if (!oldMain || newMain && newMain.minimumUpdatePeriod !== oldMain.minimumUpdatePeriod) {
                 this.updateMinimumUpdatePeriodTimeout_();
             }
+            this.addEventStreamToMetadataTrack_(newMain);
             return Boolean(newMain);
         }
         updateMinimumUpdatePeriodTimeout_() {
@@ -40073,6 +43054,47 @@
             }
             this.trigger('loadedplaylist');
         }
+        /**
+         * Takes eventstream data from a parsed DASH manifest and adds it to the metadata text track.
+         *
+         * @param {manifest} newMain the newly parsed manifest
+         */
+
+        addEventStreamToMetadataTrack_(newMain) {
+            // Only add new event stream metadata if we have a new manifest.
+            if (newMain && this.mainPlaylistLoader_.main.eventStream) {
+                // convert EventStream to ID3-like data.
+                const metadataArray = this.mainPlaylistLoader_.main.eventStream.map(eventStreamNode => {
+                    return {
+                        cueTime: eventStreamNode.start,
+                        frames: [{
+                            data: eventStreamNode.messageData
+                        }]
+                    };
+                });
+                this.addMetadataToTextTrack('EventStream', metadataArray, this.mainPlaylistLoader_.main.duration);
+            }
+        }
+        /**
+         * Returns the key ID set from a playlist
+         *
+         * @param {playlist} playlist to fetch the key ID set from.
+         * @return a Set of 32 digit hex strings that represent the unique keyIds for that playlist.
+         */
+
+        getKeyIdSet(playlist) {
+            if (playlist.contentProtection) {
+                const keyIds = new Set();
+                for (const keysystem in playlist.contentProtection) {
+                    const defaultKID = playlist.contentProtection[keysystem].attributes['cenc:default_KID'];
+                    if (defaultKID) {
+                        // DASH keyIds are separated by dashes.
+                        keyIds.add(defaultKID.replace(/-/g, '').toLowerCase());
+                    }
+                }
+                return keyIds;
+            }
+        }
     }
     var Config = {
         GOAL_BUFFER_LENGTH: 30,
@@ -40142,7 +43164,7 @@
         return fn.toString().replace(/^function.+?{/, '').slice(0, -1);
     };
 
-    /* rollup-plugin-worker-factory start for worker!/Users/ddashkevich/projects/http-streaming/src/transmuxer-worker.js */
+    /* rollup-plugin-worker-factory start for worker!/home/runner/work/http-streaming/http-streaming/src/transmuxer-worker.js */
     const workerCode$1 = transform(getWorkerString(function () {
         var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
         /**
@@ -42390,18 +45412,31 @@
             var nextByte = packetData[i + 1];
             var win = service.currentWindow;
             var char;
-            var charCodeArray; // Use the TextDecoder if one was created for this service
+            var charCodeArray; // Converts an array of bytes to a unicode hex string.
+
+            function toHexString(byteArray) {
+                return byteArray.map(byte => {
+                    return ('0' + (byte & 0xFF).toString(16)).slice(-2);
+                }).join('');
+            }
+            if (isMultiByte) {
+                charCodeArray = [currentByte, nextByte];
+                i++;
+            } else {
+                charCodeArray = [currentByte];
+            } // Use the TextDecoder if one was created for this service
 
             if (service.textDecoder_ && !isExtended) {
+                char = service.textDecoder_.decode(new Uint8Array(charCodeArray));
+            } else {
+                // We assume any multi-byte char without a decoder is unicode.
                 if (isMultiByte) {
-                    charCodeArray = [currentByte, nextByte];
-                    i++;
+                    const unicode = toHexString(charCodeArray); // Takes a unicode hex string and creates a single character.
+
+                    char = String.fromCharCode(parseInt(unicode, 16));
                 } else {
-                    charCodeArray = [currentByte];
+                    char = get708CharFromCode(extended | currentByte);
                 }
-                char = service.textDecoder_.decode(new Uint8Array(charCodeArray));
-            } else {
-                char = get708CharFromCode(extended | currentByte);
             }
             if (win.pendingNewLine && !win.isEmpty()) {
                 win.newLine(this.getPts(i));
@@ -43011,12 +46046,18 @@
 
         var ROWS = [0x1100, 0x1120, 0x1200, 0x1220, 0x1500, 0x1520, 0x1600, 0x1620, 0x1700, 0x1720, 0x1000, 0x1300, 0x1320, 0x1400, 0x1420]; // CEA-608 captions are rendered onto a 34x15 matrix of character
         // cells. The "bottom" row is the last element in the outer array.
+        // We keep track of positioning information as we go by storing the
+        // number of indentations and the tab offset in this buffer.
 
         var createDisplayBuffer = function () {
             var result = [],
                 i = BOTTOM_ROW + 1;
             while (i--) {
-                result.push('');
+                result.push({
+                    text: '',
+                    indent: 0,
+                    offset: 0
+                });
             }
             return result;
         };
@@ -43079,9 +46120,9 @@
                     this.startPts_ = packet.pts;
                 } else if (data === this.BACKSPACE_) {
                     if (this.mode_ === 'popOn') {
-                        this.nonDisplayed_[this.row_] = this.nonDisplayed_[this.row_].slice(0, -1);
+                        this.nonDisplayed_[this.row_].text = this.nonDisplayed_[this.row_].text.slice(0, -1);
                     } else {
-                        this.displayed_[this.row_] = this.displayed_[this.row_].slice(0, -1);
+                        this.displayed_[this.row_].text = this.displayed_[this.row_].text.slice(0, -1);
                     }
                 } else if (data === this.ERASE_DISPLAYED_MEMORY_) {
                     this.flushDisplayed(packet.pts);
@@ -43113,9 +46154,9 @@
                     // backspace the "e" and insert "è".
                     // Delete the previous character
                     if (this.mode_ === 'popOn') {
-                        this.nonDisplayed_[this.row_] = this.nonDisplayed_[this.row_].slice(0, -1);
+                        this.nonDisplayed_[this.row_].text = this.nonDisplayed_[this.row_].text.slice(0, -1);
                     } else {
-                        this.displayed_[this.row_] = this.displayed_[this.row_].slice(0, -1);
+                        this.displayed_[this.row_].text = this.displayed_[this.row_].text.slice(0, -1);
                     } // Bitmask char0 so that we can apply character transformations
                     // regardless of field and data channel.
                     // Then byte-shift to the left and OR with char1 so we can pass the
@@ -43143,7 +46184,11 @@
                     // increments, with an additional offset code of 1-3 to reach any
                     // of the 32 columns specified by CEA-608. So all we need to do
                     // here is increment the column cursor by the given offset.
-                    this.column_ += char1 & 0x03; // Detect PACs (Preamble Address Codes)
+                    const offset = char1 & 0x03; // For an offest value 1-3, set the offset for that caption
+                    // in the non-displayed array.
+
+                    this.nonDisplayed_[this.row_].offset = offset;
+                    this.column_ += offset; // Detect PACs (Preamble Address Codes)
                 } else if (this.isPAC(char0, char1)) {
                     // There's no logic for PAC -> row mapping, so we have to just
                     // find the row code in an array and use its index :(
@@ -43173,7 +46218,10 @@
                         // increments the column cursor by 4, so we can get the desired
                         // column position by bit-shifting to the right (to get n/2)
                         // and multiplying by 4.
-                        this.column_ = ((data & 0xe) >> 1) * 4;
+                        const indentations = (data & 0xe) >> 1;
+                        this.column_ = indentations * 4; // add to the number of indentations for positioning
+
+                        this.nonDisplayed_[this.row_].indent += indentations;
                     }
                     if (this.isColorPAC(char1)) {
                         // it's a color code, though we only support white, which
@@ -43200,28 +46248,47 @@
         // display buffer
 
         Cea608Stream.prototype.flushDisplayed = function (pts) {
-            var content = this.displayed_ // remove spaces from the start and end of the string
-                .map(function (row, index) {
+            const logWarning = index => {
+                this.trigger('log', {
+                    level: 'warn',
+                    message: 'Skipping a malformed 608 caption at index ' + index + '.'
+                });
+            };
+            const content = [];
+            this.displayed_.forEach((row, i) => {
+                if (row && row.text && row.text.length) {
                     try {
-                        return row.trim();
+                        // remove spaces from the start and end of the string
+                        row.text = row.text.trim();
                     } catch (e) {
                         // Ordinarily, this shouldn't happen. However, caption
                         // parsing errors should not throw exceptions and
                         // break playback.
-                        this.trigger('log', {
-                            level: 'warn',
-                            message: 'Skipping a malformed 608 caption at index ' + index + '.'
+                        logWarning(i);
+                    } // See the below link for more details on the following fields:
+                    // https://dvcs.w3.org/hg/text-tracks/raw-file/default/608toVTT/608toVTT.html#positioning-in-cea-608
+
+                    if (row.text.length) {
+                        content.push({
+                            // The text to be displayed in the caption from this specific row, with whitespace removed.
+                            text: row.text,
+                            // Value between 1 and 15 representing the PAC row used to calculate line height.
+                            line: i + 1,
+                            // A number representing the indent position by percentage (CEA-608 PAC indent code).
+                            // The value will be a number between 10 and 80. Offset is used to add an aditional
+                            // value to the position if necessary.
+                            position: 10 + Math.min(70, row.indent * 10) + row.offset * 2.5
                         });
-                        return '';
                     }
-                }, this) // combine all text rows to display in one cue
-                .join('\n') // and remove blank rows from the start and end, but not the middle
-                .replace(/^\n+|\n+$/g, '');
+                } else if (row === undefined || row === null) {
+                    logWarning(i);
+                }
+            });
             if (content.length) {
                 this.trigger('data', {
                     startPts: this.startPts_,
                     endPts: pts,
-                    text: content,
+                    content,
                     stream: this.name_
                 });
             }
@@ -43418,7 +46485,11 @@
                 // move currently displayed captions (up or down) to the new base row
                 for (var i = 0; i < this.rollUpRows_; i++) {
                     this.displayed_[newBaseRow - i] = this.displayed_[this.row_ - i];
-                    this.displayed_[this.row_ - i] = '';
+                    this.displayed_[this.row_ - i] = {
+                        text: '',
+                        indent: 0,
+                        offset: 0
+                    };
                 }
             }
             if (newBaseRow === undefined) {
@@ -43449,36 +46520,48 @@
         }; // Mode Implementations
 
         Cea608Stream.prototype.popOn = function (pts, text) {
-            var baseRow = this.nonDisplayed_[this.row_]; // buffer characters
+            var baseRow = this.nonDisplayed_[this.row_].text; // buffer characters
 
             baseRow += text;
-            this.nonDisplayed_[this.row_] = baseRow;
+            this.nonDisplayed_[this.row_].text = baseRow;
         };
         Cea608Stream.prototype.rollUp = function (pts, text) {
-            var baseRow = this.displayed_[this.row_];
+            var baseRow = this.displayed_[this.row_].text;
             baseRow += text;
-            this.displayed_[this.row_] = baseRow;
+            this.displayed_[this.row_].text = baseRow;
         };
         Cea608Stream.prototype.shiftRowsUp_ = function () {
             var i; // clear out inactive rows
 
             for (i = 0; i < this.topRow_; i++) {
-                this.displayed_[i] = '';
+                this.displayed_[i] = {
+                    text: '',
+                    indent: 0,
+                    offset: 0
+                };
             }
             for (i = this.row_ + 1; i < BOTTOM_ROW + 1; i++) {
-                this.displayed_[i] = '';
+                this.displayed_[i] = {
+                    text: '',
+                    indent: 0,
+                    offset: 0
+                };
             } // shift displayed rows up
 
             for (i = this.topRow_; i < this.row_; i++) {
                 this.displayed_[i] = this.displayed_[i + 1];
             } // clear out the bottom row
 
-            this.displayed_[this.row_] = '';
+            this.displayed_[this.row_] = {
+                text: '',
+                indent: 0,
+                offset: 0
+            };
         };
         Cea608Stream.prototype.paintOn = function (pts, text) {
-            var baseRow = this.displayed_[this.row_];
+            var baseRow = this.displayed_[this.row_].text;
             baseRow += text;
-            this.displayed_[this.row_] = baseRow;
+            this.displayed_[this.row_].text = baseRow;
         }; // exports
 
         var captionStream = {
@@ -43540,8 +46623,22 @@
 
             this.type_ = type || TYPE_SHARED;
             this.push = function (data) {
-                // Any "shared" rollover streams will accept _all_ data. Otherwise,
+                /**
+                 * Rollover stream expects data from elementary stream.
+                 * Elementary stream can push forward 2 types of data
+                 * - Parsed Video/Audio/Timed-metadata PES (packetized elementary stream) packets
+                 * - Tracks metadata from PMT (Program Map Table)
+                 * Rollover stream expects pts/dts info to be available, since it stores lastDTS
+                 * We should ignore non-PES packets since they may override lastDTS to undefined.
+                 * lastDTS is important to signal the next segments
+                 * about rollover from the previous segments.
+                 */
+                if (data.type === 'metadata') {
+                    this.trigger('data', data);
+                    return;
+                } // Any "shared" rollover streams will accept _all_ data. Otherwise,
                 // streams will only accept data that matches their type.
+
                 if (this.type_ !== TYPE_SHARED && data.type !== this.type_) {
                     return;
                 }
@@ -46051,7 +49148,7 @@
             this.push = function (output) {
                 // buffer incoming captions until the associated video segment
                 // finishes
-                if (output.text) {
+                if (output.content || output.text) {
                     return this.pendingCaptions.push(output);
                 } // buffer incoming id3 tags until the final flush
 
@@ -46909,7 +50006,10 @@
          * @return {?Object[]} parsedCaptions - A list of captions or null if no video tracks
          * @return {Number} parsedCaptions[].startTime - The time to show the caption in seconds
          * @return {Number} parsedCaptions[].endTime - The time to stop showing the caption in seconds
-         * @return {String} parsedCaptions[].text - The visible content of the caption
+         * @return {Object[]} parsedCaptions[].content - A list of individual caption segments
+         * @return {String} parsedCaptions[].content.text - The visible content of the caption segment
+         * @return {Number} parsedCaptions[].content.line - The line height from 1-15 for positioning of the caption segment
+         * @return {Number} parsedCaptions[].content.position - The column indent percentage for cue positioning from 10-80
          **/
 
         var parseEmbeddedCaptions = function (segment, trackId, timescale) {
@@ -48466,6 +51566,26 @@
                     data
                 }, [data.buffer]);
             }
+            /**
+             * Probes an mp4 segment for EMSG boxes containing ID3 data.
+             * https://aomediacodec.github.io/id3-emsg/
+             *
+             * @param {Uint8Array} data segment data
+             * @param {number} offset segment start time
+             * @return {Object[]} an array of ID3 frames
+             */
+
+            probeEmsgID3({
+                             data,
+                             offset
+                         }) {
+                const id3Frames = probe$2.getEmsgID3(data, offset);
+                this.self.postMessage({
+                    action: 'probeEmsgID3',
+                    id3Frames,
+                    emsgData: data
+                }, [data.buffer]);
+            }
             /**
              * Probe an mpeg2-ts segment to determine the start time of the segment in it's
              * internal "media time," as well as whether it contains video and/or audio.
@@ -48606,7 +51726,7 @@
         };
     }));
     var TransmuxWorker = factory(workerCode$1);
-    /* rollup-plugin-worker-factory end for worker!/Users/ddashkevich/projects/http-streaming/src/transmuxer-worker.js */
+    /* rollup-plugin-worker-factory end for worker!/home/runner/work/http-streaming/http-streaming/src/transmuxer-worker.js */
 
     const handleData_ = (event, transmuxedData, callback) => {
         const {
@@ -49220,14 +52340,6 @@
                         isMuxed
                     });
                     trackInfoFn = null;
-                    if (probeResult.hasAudio && !isMuxed) {
-                        audioStartFn(probeResult.audioStart);
-                    }
-                    if (probeResult.hasVideo) {
-                        videoStartFn(probeResult.videoStart);
-                    }
-                    audioStartFn = null;
-                    videoStartFn = null;
                 }
                 finish();
             }
@@ -49286,7 +52398,7 @@
             // that is the true start of the segment (where the playback engine should begin
             // decoding).
 
-            const finishLoading = captions => {
+            const finishLoading = (captions, id3Frames) => {
                 // if the track still has audio at this point it is only possible
                 // for it to be audio only. See `tracks.video && tracks.audio` if statement
                 // above.
@@ -49295,6 +52407,9 @@
                     data: bytesAsUint8Array,
                     type: trackInfo.hasAudio && !trackInfo.isMuxed ? 'audio' : 'video'
                 });
+                if (id3Frames && id3Frames.length) {
+                    id3Fn(segment, id3Frames);
+                }
                 if (captions && captions.length) {
                     captionsFn(segment, captions);
                 }
@@ -49317,30 +52432,44 @@
                     }
                     if (trackInfo.hasVideo) {
                         timingInfoFn(segment, 'video', 'start', startTime);
-                    } // Run through the CaptionParser in case there are captions.
-                    // Initialize CaptionParser if it hasn't been yet
-
-                    if (!tracks.video || !data.byteLength || !segment.transmuxer) {
-                        finishLoading();
-                        return;
                     }
                     workerCallback({
-                        action: 'pushMp4Captions',
-                        endAction: 'mp4Captions',
-                        transmuxer: segment.transmuxer,
+                        action: 'probeEmsgID3',
                         data: bytesAsUint8Array,
-                        timescales: segment.map.timescales,
-                        trackIds: [tracks.video.id],
-                        callback: message => {
+                        transmuxer: segment.transmuxer,
+                        offset: startTime,
+                        callback: ({
+                                       emsgData,
+                                       id3Frames
+                                   }) => {
                             // transfer bytes back to us
-                            bytes = message.data.buffer;
-                            segment.bytes = bytesAsUint8Array = message.data;
-                            message.logs.forEach(function (log) {
-                                onTransmuxerLog(merge(log, {
-                                    stream: 'mp4CaptionParser'
-                                }));
+                            bytes = emsgData.buffer;
+                            segment.bytes = bytesAsUint8Array = emsgData; // Run through the CaptionParser in case there are captions.
+                            // Initialize CaptionParser if it hasn't been yet
+
+                            if (!tracks.video || !emsgData.byteLength || !segment.transmuxer) {
+                                finishLoading(undefined, id3Frames);
+                                return;
+                            }
+                            workerCallback({
+                                action: 'pushMp4Captions',
+                                endAction: 'mp4Captions',
+                                transmuxer: segment.transmuxer,
+                                data: bytesAsUint8Array,
+                                timescales: segment.map.timescales,
+                                trackIds: [tracks.video.id],
+                                callback: message => {
+                                    // transfer bytes back to us
+                                    bytes = message.data.buffer;
+                                    segment.bytes = bytesAsUint8Array = message.data;
+                                    message.logs.forEach(function (log) {
+                                        onTransmuxerLog(merge(log, {
+                                            stream: 'mp4CaptionParser'
+                                        }));
+                                    });
+                                    finishLoading(message.captions, id3Frames);
+                                }
                             });
-                            finishLoading(message.captions);
                         }
                     });
                 }
@@ -50466,8 +53595,22 @@
         }
         const Cue = window.WebKitDataCue || window.VTTCue;
         captionArray.forEach(caption => {
-            const track = caption.stream;
-            inbandTextTracks[track].addCue(new Cue(caption.startTime + timestampOffset, caption.endTime + timestampOffset, caption.text));
+            const track = caption.stream; // in CEA 608 captions, video.js/mux.js sends a content array
+            // with positioning data
+
+            if (caption.content) {
+                caption.content.forEach(value => {
+                    const cue = new Cue(caption.startTime + timestampOffset, caption.endTime + timestampOffset, value.text);
+                    cue.line = value.line;
+                    cue.align = 'left';
+                    cue.position = value.position;
+                    cue.positionAlign = 'line-left';
+                    inbandTextTracks[track].addCue(cue);
+                });
+            } else {
+                // otherwise, a text value with combined captions is sent
+                inbandTextTracks[track].addCue(new Cue(caption.startTime + timestampOffset, caption.endTime + timestampOffset, caption.text));
+            }
         });
     };
     /**
@@ -50534,6 +53677,10 @@
 
             if (typeof time !== 'number' || window.isNaN(time) || time < 0 || !(time < Infinity)) {
                 return;
+            } // If we have no frames, we can't create a cue.
+
+            if (!metadata.frames || !metadata.frames.length) {
+                return;
             }
             metadata.frames.forEach(frame => {
                 const cue = new Cue(time, time, frame.value || frame.url || frame.data || '');
@@ -50570,12 +53717,65 @@
 
         sortedStartTimes.forEach((startTime, idx) => {
             const cueGroup = cuesGroupedByStartTime[startTime];
-            const nextTime = Number(sortedStartTimes[idx + 1]) || videoDuration; // Map each cue's endTime the next group's startTime
+            const finiteDuration = isFinite(videoDuration) ? videoDuration : startTime;
+            const nextTime = Number(sortedStartTimes[idx + 1]) || finiteDuration; // Map each cue's endTime the next group's startTime
 
             cueGroup.forEach(cue => {
                 cue.endTime = nextTime;
             });
         });
+    }; // object for mapping daterange attributes
+
+    const dateRangeAttr = {
+        id: 'ID',
+        class: 'CLASS',
+        startDate: 'START-DATE',
+        duration: 'DURATION',
+        endDate: 'END-DATE',
+        endOnNext: 'END-ON-NEXT',
+        plannedDuration: 'PLANNED-DURATION',
+        scte35Out: 'SCTE35-OUT',
+        scte35In: 'SCTE35-IN'
+    };
+    const dateRangeKeysToOmit = new Set(['id', 'class', 'startDate', 'duration', 'endDate', 'endOnNext', 'startTime', 'endTime', 'processDateRange']);
+    /**
+     * Add DateRange metadata text track to a source handler given an array of metadata
+     *
+     * @param {Object}
+     *   @param {Object} inbandTextTracks the inband text tracks
+     *   @param {Array} dateRanges parsed media playlist
+     * @private
+     */
+
+    const addDateRangeMetadata = ({
+                                      inbandTextTracks,
+                                      dateRanges
+                                  }) => {
+        const metadataTrack = inbandTextTracks.metadataTrack_;
+        if (!metadataTrack) {
+            return;
+        }
+        const Cue = window.WebKitDataCue || window.VTTCue;
+        dateRanges.forEach(dateRange => {
+            // we generate multiple cues for each date range with different attributes
+            for (const key of Object.keys(dateRange)) {
+                if (dateRangeKeysToOmit.has(key)) {
+                    continue;
+                }
+                const cue = new Cue(dateRange.startTime, dateRange.endTime, '');
+                cue.id = dateRange.id;
+                cue.type = 'com.apple.quicktime.HLS';
+                cue.value = {
+                    key: dateRangeAttr[key],
+                    data: dateRange[key]
+                };
+                if (key === 'scte35Out' || key === 'scte35In') {
+                    cue.value.data = new Uint8Array(cue.value.data.match(/[\da-f]{2}/gi)).buffer;
+                }
+                metadataTrack.addCue(cue);
+            }
+            dateRange.processDateRange();
+        });
     };
     /**
      * Create metadata text track on video.js if it does not exist
@@ -50594,7 +53794,9 @@
             kind: 'metadata',
             label: 'Timed Metadata'
         }, false).track;
-        inbandTextTracks.metadataTrack_.inBandMetadataTrackDispatchType = dispatchType;
+        if (!videojs.browser.IS_ANY_SAFARI) {
+            inbandTextTracks.metadataTrack_.inBandMetadataTrackDispatchType = dispatchType;
+        }
     };
     /**
      * Remove cues from a track on video.js.
@@ -50636,19 +53838,14 @@
         if (!cues) {
             return;
         }
-        for (let i = 0; i < cues.length; i++) {
-            const duplicates = [];
-            let occurrences = 0;
-            for (let j = 0; j < cues.length; j++) {
-                if (cues[i].startTime === cues[j].startTime && cues[i].endTime === cues[j].endTime && cues[i].text === cues[j].text) {
-                    occurrences++;
-                    if (occurrences > 1) {
-                        duplicates.push(cues[j]);
-                    }
-                }
-            }
-            if (duplicates.length) {
-                duplicates.forEach(dupe => track.removeCue(dupe));
+        const uniqueCues = {};
+        for (let i = cues.length - 1; i >= 0; i--) {
+            const cue = cues[i];
+            const cueKey = `${cue.startTime}-${cue.endTime}-${cue.text}`;
+            if (uniqueCues[cueKey]) {
+                track.removeCue(cue);
+            } else {
+                uniqueCues[cueKey] = cue;
             }
         }
     };
@@ -51270,11 +54467,13 @@
             this.parse708captions_ = settings.parse708captions;
             this.useDtsForTimestampOffset_ = settings.useDtsForTimestampOffset;
             this.captionServices_ = settings.captionServices;
-            this.exactManifestTimings = settings.exactManifestTimings; // private instance variables
+            this.exactManifestTimings = settings.exactManifestTimings;
+            this.addMetadataToTextTrack = settings.addMetadataToTextTrack; // private instance variables
 
             this.checkBufferTimeout_ = null;
             this.error_ = void 0;
             this.currentTimeline_ = -1;
+            this.shouldForceTimestampOffsetAfterResync_ = false;
             this.pendingSegment_ = null;
             this.xhrOptions_ = null;
             this.pendingSegments_ = [];
@@ -51283,7 +54482,7 @@
 
             this.gopBuffer_ = [];
             this.timeMapping_ = 0;
-            this.safeAppend_ = videojs.browser.IE_VERSION >= 11;
+            this.safeAppend_ = false;
             this.appendInitSegment_ = {
                 audio: true,
                 video: true
@@ -51694,7 +54893,8 @@
                     oldId = oldPlaylist.uri;
                 }
             }
-            this.logger_(`playlist update [${oldId} => ${newPlaylist.id || newPlaylist.uri}]`); // in VOD, this is always a rendition switch (or we updated our syncInfo above)
+            this.logger_(`playlist update [${oldId} => ${newPlaylist.id || newPlaylist.uri}]`);
+            this.syncController_.updateMediaSequenceMap(newPlaylist, this.currentTime_(), this.loaderType_); // in VOD, this is always a rendition switch (or we updated our syncInfo above)
             // in LIVE, we always want to update with new playlists (including refreshes)
 
             this.trigger('syncinfoupdate'); // if we were unpaused but waiting for a playlist, start
@@ -51707,13 +54907,14 @@
                 if (this.mediaIndex !== null) {
                     // we must reset/resync the segment loader when we switch renditions and
                     // the segment loader is already synced to the previous rendition
-                    // on playlist changes we want it to be possible to fetch
-                    // at the buffer for vod but not for live. So we use resetLoader
-                    // for live and resyncLoader for vod. We want this because
-                    // if a playlist uses independent and non-independent segments/parts the
-                    // buffer may not accurately reflect the next segment that we should try
-                    // downloading.
-                    if (!newPlaylist.endList) {
+                    // We only want to reset the loader here for LLHLS playback, as resetLoader sets fetchAtBuffer_
+                    // to false, resulting in fetching segments at currentTime and causing repeated
+                    // same-segment requests on playlist change. This erroneously drives up the playback watcher
+                    // stalled segment count, as re-requesting segments at the currentTime or browser cached segments
+                    // will not change the buffer.
+                    // Reference for LLHLS fixes: https://github.com/videojs/http-streaming/pull/1201
+                    const isLLHLS = !newPlaylist.endList && typeof newPlaylist.partTargetDuration === 'number';
+                    if (isLLHLS) {
                         this.resetLoader();
                     } else {
                         this.resyncLoader();
@@ -51854,6 +55055,7 @@
             this.partIndex = null;
             this.syncPoint_ = null;
             this.isPendingTimestampOffset_ = false;
+            this.shouldForceTimestampOffsetAfterResync_ = true;
             this.callQueue_ = [];
             this.loadQueue_ = [];
             this.metadataQueue_.id3 = [];
@@ -52030,7 +55232,7 @@
             if (!segments.length || preloaded || haveEnoughBuffer) {
                 return null;
             }
-            this.syncPoint_ = this.syncPoint_ || this.syncController_.getSyncPoint(this.playlist_, this.duration_(), this.currentTimeline_, this.currentTime_());
+            this.syncPoint_ = this.syncPoint_ || this.syncController_.getSyncPoint(this.playlist_, this.duration_(), this.currentTimeline_, this.currentTime_(), this.loaderType_);
             const next = {
                 partIndex: null,
                 mediaIndex: null,
@@ -52040,6 +55242,7 @@
             };
             if (next.isSyncRequest) {
                 next.mediaIndex = getSyncSegmentCandidate(this.currentTimeline_, segments, bufferedEnd);
+                this.logger_(`choose next request. Can not find sync point. Fallback to media Index: ${next.mediaIndex}`);
             } else if (this.mediaIndex !== null) {
                 const segment = segments[this.mediaIndex];
                 const partIndex = typeof this.partIndex === 'number' ? this.partIndex : -1;
@@ -52068,6 +55271,7 @@
                 next.mediaIndex = segmentIndex;
                 next.startOfSegment = startTime;
                 next.partIndex = partIndex;
+                this.logger_(`choose next request. Playlist switched and we have a sync point. Media Index: ${next.mediaIndex} `);
             }
             const nextSegment = segments[next.mediaIndex];
             let nextPart = nextSegment && typeof next.partIndex === 'number' && nextSegment.parts && nextSegment.parts[next.partIndex]; // if the next segment index is invalid or
@@ -52081,12 +55285,16 @@
             if (typeof next.partIndex !== 'number' && nextSegment.parts) {
                 next.partIndex = 0;
                 nextPart = nextSegment.parts[0];
-            } // if we have no buffered data then we need to make sure
+            } // independentSegments applies to every segment in a playlist. If independentSegments appears in a main playlist,
+            // it applies to each segment in each media playlist.
+            // https://datatracker.ietf.org/doc/html/draft-pantos-http-live-streaming-23#section-4.3.5.1
+
+            const hasIndependentSegments = this.vhs_.playlists && this.vhs_.playlists.main && this.vhs_.playlists.main.independentSegments || this.playlist_.independentSegments; // if we have no buffered data then we need to make sure
             // that the next part we append is "independent" if possible.
             // So we check if the previous part is independent, and request
             // it if it is.
 
-            if (!bufferedTime && nextPart && !nextPart.independent) {
+            if (!bufferedTime && nextPart && !hasIndependentSegments && !nextPart.independent) {
                 if (next.partIndex === 0) {
                     const lastSegment = segments[next.mediaIndex - 1];
                     const lastSegmentLastPart = lastSegment.parts && lastSegment.parts.length && lastSegment.parts[lastSegment.parts.length - 1];
@@ -52108,6 +55316,11 @@
             if (next.mediaIndex >= segments.length - 1 && ended && !this.seeking_()) {
                 return null;
             }
+            if (this.shouldForceTimestampOffsetAfterResync_) {
+                this.shouldForceTimestampOffsetAfterResync_ = false;
+                next.forceTimestampOffset = true;
+                this.logger_('choose next request. Force timestamp offset after loader resync');
+            }
             return this.generateSegmentInfo_(next);
         }
         generateSegmentInfo_(options) {
@@ -52400,17 +55613,7 @@
                 this.metadataQueue_.id3.push(this.handleId3_.bind(this, simpleSegment, id3Frames, dispatchType));
                 return;
             }
-            const timestampOffset = this.sourceUpdater_.videoTimestampOffset() === null ? this.sourceUpdater_.audioTimestampOffset() : this.sourceUpdater_.videoTimestampOffset(); // There's potentially an issue where we could double add metadata if there's a muxed
-            // audio/video source with a metadata track, and an alt audio with a metadata track.
-            // However, this probably won't happen, and if it does it can be handled then.
-
-            createMetadataTrackIfNotExists(this.inbandTextTracks_, dispatchType, this.vhs_.tech_);
-            addMetadata({
-                inbandTextTracks: this.inbandTextTracks_,
-                metadataArray: id3Frames,
-                timestampOffset,
-                videoDuration: this.duration_()
-            });
+            this.addMetadataToTextTrack(dispatchType, id3Frames, this.duration_());
         }
         processMetadataQueue_() {
             this.metadataQueue_.id3.forEach(fn => fn());
@@ -53531,6 +56734,7 @@
                 custom: segment.custom,
                 dateTimeObject: segment.dateTimeObject,
                 dateTimeString: segment.dateTimeString,
+                programDateTime: segment.programDateTime,
                 bandwidth: segmentInfo.playlist.attributes.BANDWIDTH,
                 resolution: segmentInfo.playlist.attributes.RESOLUTION,
                 codecs: segmentInfo.playlist.attributes.CODECS,
@@ -53772,9 +56976,14 @@
             if (sourceUpdater.codecs[type] === codec) {
                 return;
             }
-            sourceUpdater.logger_(`changing ${type}Buffer codec from ${sourceUpdater.codecs[type]} to ${codec}`);
-            sourceBuffer.changeType(mime);
-            sourceUpdater.codecs[type] = codec;
+            sourceUpdater.logger_(`changing ${type}Buffer codec from ${sourceUpdater.codecs[type]} to ${codec}`); // check if change to the provided type is supported
+
+            try {
+                sourceBuffer.changeType(mime);
+                sourceUpdater.codecs[type] = codec;
+            } catch (e) {
+                videojs.log.warn(`Failed to changeType on ${type}Buffer`, e);
+            }
         }
     };
     const pushQueue = ({
@@ -53953,11 +57162,9 @@
          */
 
         canRemoveSourceBuffer() {
-            // IE reports that it supports removeSourceBuffer, but often throws
-            // errors when attempting to use the function. So we report that it
-            // does not support removeSourceBuffer. As of Firefox 83 removeSourceBuffer
-            // throws errors, so we report that it does not support this as well.
-            return !videojs.browser.IE_VERSION && !videojs.browser.IS_FIREFOX && window.MediaSource && window.MediaSource.prototype && typeof window.MediaSource.prototype.removeSourceBuffer === 'function';
+            // As of Firefox 83 removeSourceBuffer
+            // throws errors, so we report that it does not support this.
+            return !videojs.browser.IS_FIREFOX && window.MediaSource && window.MediaSource.prototype && typeof window.MediaSource.prototype.removeSourceBuffer === 'function';
         }
         /**
          * Whether or not the changeType function is supported
@@ -54330,6 +57537,10 @@
         }
     }
     const uint8ToUtf8 = uintArray => decodeURIComponent(escape(String.fromCharCode.apply(null, uintArray)));
+    const bufferToHexString = buffer => {
+        const uInt8Buffer = new Uint8Array(buffer);
+        return Array.from(uInt8Buffer).map(byte => byte.toString(16).padStart(2, '0')).join('');
+    };
 
     /**
      * @file vtt-segment-loader.js
@@ -54723,12 +57934,23 @@
                 segment.empty = true;
                 return;
             }
-            const timestampmap = segmentInfo.timestampmap;
-            const diff = timestampmap.MPEGTS / clock_1 - timestampmap.LOCAL + mappingObj.mapping;
+            const {
+                MPEGTS,
+                LOCAL
+            } = segmentInfo.timestampmap;
+            /**
+             * From the spec:
+             * The MPEGTS media timestamp MUST use a 90KHz timescale,
+             * even when non-WebVTT Media Segments use a different timescale.
+             */
+
+            const mpegTsInSeconds = MPEGTS / clock_1;
+            const diff = mpegTsInSeconds - LOCAL + mappingObj.mapping;
             segmentInfo.cues.forEach(cue => {
-                // First convert cue time to TS time using the timestamp-map provided within the vtt
-                cue.startTime += diff;
-                cue.endTime += diff;
+                const duration = cue.endTime - cue.startTime;
+                const startTime = MPEGTS === 0 ? cue.startTime + diff : this.handleRollover_(cue.startTime + diff, mappingObj.time);
+                cue.startTime = Math.max(startTime, 0);
+                cue.endTime = Math.max(startTime + duration, 0);
             });
             if (!playlist.syncInfo) {
                 const firstStart = segmentInfo.cues[0].startTime;
@@ -54739,6 +57961,45 @@
                 };
             }
         }
+        /**
+         * MPEG-TS PES timestamps are limited to 2^33.
+         * Once they reach 2^33, they roll over to 0.
+         * mux.js handles PES timestamp rollover for the following scenarios:
+         * [forward rollover(right)] ->
+         *    PES timestamps monotonically increase, and once they reach 2^33, they roll over to 0
+         * [backward rollover(left)] -->
+         *    we seek back to position before rollover.
+         *
+         * According to the HLS SPEC:
+         * When synchronizing WebVTT with PES timestamps, clients SHOULD account
+         * for cases where the 33-bit PES timestamps have wrapped and the WebVTT
+         * cue times have not.  When the PES timestamp wraps, the WebVTT Segment
+         * SHOULD have a X-TIMESTAMP-MAP header that maps the current WebVTT
+         * time to the new (low valued) PES timestamp.
+         *
+         * So we want to handle rollover here and align VTT Cue start/end time to the player's time.
+         */
+
+        handleRollover_(value, reference) {
+            if (reference === null) {
+                return value;
+            }
+            let valueIn90khz = value * clock_1;
+            const referenceIn90khz = reference * clock_1;
+            let offset;
+            if (referenceIn90khz < valueIn90khz) {
+                // - 2^33
+                offset = -8589934592;
+            } else {
+                // + 2^33
+                offset = 8589934592;
+            } // distance(value - reference) > 2^32
+
+            while (Math.abs(valueIn90khz - referenceIn90khz) > 4294967296) {
+                valueIn90khz += offset;
+            }
+            return valueIn90khz / clock_1;
+        }
     }
 
     /**
@@ -54845,6 +58106,71 @@
                     };
                     return syncPoint;
                 }
+                return null;
+            }
+        }, {
+            name: 'MediaSequence',
+            /**
+             * run media sequence strategy
+             *
+             * @param {SyncController} syncController
+             * @param {Object} playlist
+             * @param {number} duration
+             * @param {number} currentTimeline
+             * @param {number} currentTime
+             * @param {string} type
+             */
+            run: (syncController, playlist, duration, currentTimeline, currentTime, type) => {
+                if (!type) {
+                    return null;
+                }
+                const mediaSequenceMap = syncController.getMediaSequenceMap(type);
+                if (!mediaSequenceMap || mediaSequenceMap.size === 0) {
+                    return null;
+                }
+                if (playlist.mediaSequence === undefined || !Array.isArray(playlist.segments) || !playlist.segments.length) {
+                    return null;
+                }
+                let currentMediaSequence = playlist.mediaSequence;
+                let segmentIndex = 0;
+                for (const segment of playlist.segments) {
+                    const range = mediaSequenceMap.get(currentMediaSequence);
+                    if (!range) {
+                        // unexpected case
+                        // we expect this playlist to be the same playlist in the map
+                        // just break from the loop and move forward to the next strategy
+                        break;
+                    }
+                    if (currentTime >= range.start && currentTime < range.end) {
+                        // we found segment
+                        if (Array.isArray(segment.parts) && segment.parts.length) {
+                            let currentPartStart = range.start;
+                            let partIndex = 0;
+                            for (const part of segment.parts) {
+                                const start = currentPartStart;
+                                const end = start + part.duration;
+                                if (currentTime >= start && currentTime < end) {
+                                    return {
+                                        time: range.start,
+                                        segmentIndex,
+                                        partIndex
+                                    };
+                                }
+                                partIndex++;
+                                currentPartStart = end;
+                            }
+                        } // no parts found, return sync point for segment
+
+                        return {
+                            time: range.start,
+                            segmentIndex,
+                            partIndex: null
+                        };
+                    }
+                    segmentIndex++;
+                    currentMediaSequence++;
+                } // we didn't find any segments for provided current time
+
                 return null;
             }
         },
@@ -54986,8 +58312,73 @@
             this.timelines = [];
             this.discontinuities = [];
             this.timelineToDatetimeMappings = {};
+            /**
+             * @type {Map<string, Map<number, { start: number, end: number }>>}
+             * @private
+             */
+
+            this.mediaSequenceStorage_ = new Map();
             this.logger_ = logger('SyncController');
         }
+        /**
+         * Get media sequence map by type
+         *
+         * @param {string} type - segment loader type
+         * @return {Map<number, { start: number, end: number }> | undefined}
+         */
+
+        getMediaSequenceMap(type) {
+            return this.mediaSequenceStorage_.get(type);
+        }
+        /**
+         * Update Media Sequence Map -> <MediaSequence, Range>
+         *
+         * @param {Object} playlist - parsed playlist
+         * @param {number} currentTime - current player's time
+         * @param {string} type - segment loader type
+         * @return {void}
+         */
+
+        updateMediaSequenceMap(playlist, currentTime, type) {
+            // we should not process this playlist if it does not have mediaSequence or segments
+            if (playlist.mediaSequence === undefined || !Array.isArray(playlist.segments) || !playlist.segments.length) {
+                return;
+            }
+            const currentMap = this.getMediaSequenceMap(type);
+            const result = new Map();
+            let currentMediaSequence = playlist.mediaSequence;
+            let currentBaseTime;
+            if (!currentMap) {
+                // first playlist setup:
+                currentBaseTime = 0;
+            } else if (currentMap.has(playlist.mediaSequence)) {
+                // further playlists setup:
+                currentBaseTime = currentMap.get(playlist.mediaSequence).start;
+            } else {
+                // it seems like we have a gap between playlists, use current time as a fallback:
+                this.logger_(`MediaSequence sync for ${type} segment loader - received a gap between playlists.
+Fallback base time to: ${currentTime}.
+Received media sequence: ${currentMediaSequence}.
+Current map: `, currentMap);
+                currentBaseTime = currentTime;
+            }
+            this.logger_(`MediaSequence sync for ${type} segment loader.
+Received media sequence: ${currentMediaSequence}.
+base time is ${currentBaseTime}
+Current map: `, currentMap);
+            playlist.segments.forEach(segment => {
+                const start = currentBaseTime;
+                const end = start + segment.duration;
+                const range = {
+                    start,
+                    end
+                };
+                result.set(currentMediaSequence, range);
+                currentMediaSequence++;
+                currentBaseTime = end;
+            });
+            this.mediaSequenceStorage_.set(type, result);
+        }
         /**
          * Find a sync-point for the playlist specified
          *
@@ -55000,17 +58391,50 @@
          *        Duration of the MediaSource (Infinite if playing a live source)
          * @param {number} currentTimeline
          *        The last timeline from which a segment was loaded
+         * @param {number} currentTime
+         *        Current player's time
+         * @param {string} type
+         *        Segment loader type
          * @return {Object}
          *          A sync-point object
          */
 
-        getSyncPoint(playlist, duration, currentTimeline, currentTime) {
-            const syncPoints = this.runStrategies_(playlist, duration, currentTimeline, currentTime);
+        getSyncPoint(playlist, duration, currentTimeline, currentTime, type) {
+            // Always use VOD sync point for VOD
+            if (duration !== Infinity) {
+                const vodSyncPointStrategy = syncPointStrategies.find(({
+                                                                           name
+                                                                       }) => name === 'VOD');
+                return vodSyncPointStrategy.run(this, playlist, duration);
+            }
+            const syncPoints = this.runStrategies_(playlist, duration, currentTimeline, currentTime, type);
             if (!syncPoints.length) {
                 // Signal that we need to attempt to get a sync-point manually
                 // by fetching a segment in the playlist and constructing
                 // a sync-point from that information
                 return null;
+            } // If we have exact match just return it instead of finding the nearest distance
+
+            for (const syncPointInfo of syncPoints) {
+                const {
+                    syncPoint,
+                    strategy
+                } = syncPointInfo;
+                const {
+                    segmentIndex,
+                    time
+                } = syncPoint;
+                if (segmentIndex < 0) {
+                    continue;
+                }
+                const selectedSegment = playlist.segments[segmentIndex];
+                const start = time;
+                const end = start + selectedSegment.duration;
+                this.logger_(`Strategy: ${strategy}. Current time: ${currentTime}. selected segment: ${segmentIndex}. Time: [${start} -> ${end}]}`);
+                if (currentTime >= start && currentTime < end) {
+                    this.logger_('Found sync point with exact match: ', syncPoint);
+                    return syncPoint;
+                }
             } // Now find the sync-point that is closest to the currentTime because
             // that should result in the most accurate guess about which segment
             // to fetch
@@ -55036,7 +58460,7 @@
             if (!playlist || !playlist.segments) {
                 return null;
             }
-            const syncPoints = this.runStrategies_(playlist, duration, playlist.discontinuitySequence, 0); // Without sync-points, there is not enough information to determine the expired time
+            const syncPoints = this.runStrategies_(playlist, duration, playlist.discontinuitySequence, 0, 'main'); // Without sync-points, there is not enough information to determine the expired time
 
             if (!syncPoints.length) {
                 return null;
@@ -55068,16 +58492,20 @@
          *        Duration of the MediaSource (Infinity if playing a live source)
          * @param {number} currentTimeline
          *        The last timeline from which a segment was loaded
+         * @param {number} currentTime
+         *        Current player's time
+         * @param {string} type
+         *        Segment loader type
          * @return {Array}
          *          A list of sync-point objects
          */
 
-        runStrategies_(playlist, duration, currentTimeline, currentTime) {
+        runStrategies_(playlist, duration, currentTimeline, currentTime, type) {
             const syncPoints = []; // Try to find a sync-point in by utilizing various strategies...
 
             for (let i = 0; i < syncPointStrategies.length; i++) {
                 const strategy = syncPointStrategies[i];
-                const syncPoint = strategy.run(this, playlist, duration, currentTimeline, currentTime);
+                const syncPoint = strategy.run(this, playlist, duration, currentTimeline, currentTime, type);
                 if (syncPoint) {
                     syncPoint.strategy = strategy.name;
                     syncPoints.push({
@@ -55390,7 +58818,7 @@
         }
     }
 
-    /* rollup-plugin-worker-factory start for worker!/Users/ddashkevich/projects/http-streaming/src/decrypter-worker.js */
+    /* rollup-plugin-worker-factory start for worker!/home/runner/work/http-streaming/http-streaming/src/decrypter-worker.js */
     const workerCode = transform(getWorkerString(function () {
         /**
          * @file stream.js
@@ -55987,7 +59415,7 @@
     }));
 
     var Decrypter = factory(workerCode);
-    /* rollup-plugin-worker-factory end for worker!/Users/ddashkevich/projects/http-streaming/src/decrypter-worker.js */
+    /* rollup-plugin-worker-factory end for worker!/home/runner/work/http-streaming/http-streaming/src/decrypter-worker.js */
 
     /**
      * Convert the properties of an HLS track into an audioTrackKind.
@@ -56210,15 +59638,11 @@
          */
         AUDIO: (type, settings) => () => {
             const {
-                segmentLoaders: {
-                    [type]: segmentLoader
-                },
                 mediaTypes: {
                     [type]: mediaType
                 },
                 excludePlaylist
-            } = settings;
-            stopLoaders(segmentLoader, mediaType); // switch back to default audio track
+            } = settings; // switch back to default audio track
 
             const activeTrack = mediaType.activeTrack();
             const activeGroup = mediaType.activeGroup();
@@ -56254,15 +59678,11 @@
          */
         SUBTITLES: (type, settings) => () => {
             const {
-                segmentLoaders: {
-                    [type]: segmentLoader
-                },
                 mediaTypes: {
                     [type]: mediaType
                 }
             } = settings;
             videojs.log.warn('Problem encountered loading the subtitle track.' + 'Disabling subtitle track.');
-            stopLoaders(segmentLoader, mediaType);
             const track = mediaType.activeTrack();
             if (track) {
                 track.mode = 'disabled';
@@ -56478,7 +59898,7 @@
                     groups[groupId] = [];
                 }
                 for (const variantLabel in mediaGroups[type][groupId]) {
-                    if (mediaGroups[type][groupId][variantLabel].forced) {
+                    if (!vhs.options_.useForcedSubtitles && mediaGroups[type][groupId][variantLabel].forced) {
                         // Subtitle playlists with the forced attribute are not selectable in Safari.
                         // According to Apple's HLS Authoring Specification:
                         //   If content has forced subtitles and regular subtitles in a given language,
@@ -56849,10 +60269,420 @@
         return mediaTypes;
     };
 
+    /**
+     * A utility class for setting properties and maintaining the state of the content steering manifest.
+     *
+     * Content Steering manifest format:
+     * VERSION: number (required) currently only version 1 is supported.
+     * TTL: number in seconds (optional) until the next content steering manifest reload.
+     * RELOAD-URI: string (optional) uri to fetch the next content steering manifest.
+     * SERVICE-LOCATION-PRIORITY or PATHWAY-PRIORITY a non empty array of unique string values.
+     * PATHWAY-CLONES: array (optional) (HLS only) pathway clone objects to copy from other playlists.
+     */
+
+    class SteeringManifest {
+        constructor() {
+            this.priority_ = [];
+            this.pathwayClones_ = new Map();
+        }
+        set version(number) {
+            // Only version 1 is currently supported for both DASH and HLS.
+            if (number === 1) {
+                this.version_ = number;
+            }
+        }
+        set ttl(seconds) {
+            // TTL = time-to-live, default = 300 seconds.
+            this.ttl_ = seconds || 300;
+        }
+        set reloadUri(uri) {
+            if (uri) {
+                // reload URI can be relative to the previous reloadUri.
+                this.reloadUri_ = resolveUrl(this.reloadUri_, uri);
+            }
+        }
+        set priority(array) {
+            // priority must be non-empty and unique values.
+            if (array && array.length) {
+                this.priority_ = array;
+            }
+        }
+        set pathwayClones(array) {
+            // pathwayClones must be non-empty.
+            if (array && array.length) {
+                this.pathwayClones_ = new Map(array.map(clone => [clone.ID, clone]));
+            }
+        }
+        get version() {
+            return this.version_;
+        }
+        get ttl() {
+            return this.ttl_;
+        }
+        get reloadUri() {
+            return this.reloadUri_;
+        }
+        get priority() {
+            return this.priority_;
+        }
+        get pathwayClones() {
+            return this.pathwayClones_;
+        }
+    }
+    /**
+     * This class represents a content steering manifest and associated state. See both HLS and DASH specifications.
+     * HLS: https://developer.apple.com/streaming/HLSContentSteeringSpecification.pdf and
+     * https://datatracker.ietf.org/doc/draft-pantos-hls-rfc8216bis/ section 4.4.6.6.
+     * DASH: https://dashif.org/docs/DASH-IF-CTS-00XX-Content-Steering-Community-Review.pdf
+     *
+     * @param {function} xhr for making a network request from the browser.
+     * @param {function} bandwidth for fetching the current bandwidth from the main segment loader.
+     */
+
+    class ContentSteeringController extends videojs.EventTarget {
+        constructor(xhr, bandwidth) {
+            super();
+            this.currentPathway = null;
+            this.defaultPathway = null;
+            this.queryBeforeStart = false;
+            this.availablePathways_ = new Set();
+            this.steeringManifest = new SteeringManifest();
+            this.proxyServerUrl_ = null;
+            this.manifestType_ = null;
+            this.ttlTimeout_ = null;
+            this.request_ = null;
+            this.currentPathwayClones = new Map();
+            this.nextPathwayClones = new Map();
+            this.excludedSteeringManifestURLs = new Set();
+            this.logger_ = logger('Content Steering');
+            this.xhr_ = xhr;
+            this.getBandwidth_ = bandwidth;
+        }
+        /**
+         * Assigns the content steering tag properties to the steering controller
+         *
+         * @param {string} baseUrl the baseURL from the main manifest for resolving the steering manifest url
+         * @param {Object} steeringTag the content steering tag from the main manifest
+         */
+
+        assignTagProperties(baseUrl, steeringTag) {
+            this.manifestType_ = steeringTag.serverUri ? 'HLS' : 'DASH'; // serverUri is HLS serverURL is DASH
+
+            const steeringUri = steeringTag.serverUri || steeringTag.serverURL;
+            if (!steeringUri) {
+                this.logger_(`steering manifest URL is ${steeringUri}, cannot request steering manifest.`);
+                this.trigger('error');
+                return;
+            } // Content steering manifests can be encoded as a data URI. We can decode, parse and return early if that's the case.
+
+            if (steeringUri.startsWith('data:')) {
+                this.decodeDataUriManifest_(steeringUri.substring(steeringUri.indexOf(',') + 1));
+                return;
+            } // reloadUri is the resolution of the main manifest URL and steering URL.
+
+            this.steeringManifest.reloadUri = resolveUrl(baseUrl, steeringUri); // pathwayId is HLS defaultServiceLocation is DASH
+
+            this.defaultPathway = steeringTag.pathwayId || steeringTag.defaultServiceLocation; // currently only DASH supports the following properties on <ContentSteering> tags.
+
+            this.queryBeforeStart = steeringTag.queryBeforeStart;
+            this.proxyServerUrl_ = steeringTag.proxyServerURL; // trigger a steering event if we have a pathway from the content steering tag.
+            // this tells VHS which segment pathway to start with.
+            // If queryBeforeStart is true we need to wait for the steering manifest response.
+
+            if (this.defaultPathway && !this.queryBeforeStart) {
+                this.trigger('content-steering');
+            }
+        }
+        /**
+         * Requests the content steering manifest and parse the response. This should only be called after
+         * assignTagProperties was called with a content steering tag.
+         *
+         * @param {string} initialUri The optional uri to make the request with.
+         *    If set, the request should be made with exactly what is passed in this variable.
+         *    This scenario should only happen once on initalization.
+         */
+
+        requestSteeringManifest(initial) {
+            const reloadUri = this.steeringManifest.reloadUri;
+            if (!reloadUri) {
+                return;
+            } // We currently don't support passing MPD query parameters directly to the content steering URL as this requires
+            // ExtUrlQueryInfo tag support. See the DASH content steering spec section 8.1.
+            // This request URI accounts for manifest URIs that have been excluded.
+
+            const uri = initial ? reloadUri : this.getRequestURI(reloadUri); // If there are no valid manifest URIs, we should stop content steering.
+
+            if (!uri) {
+                this.logger_('No valid content steering manifest URIs. Stopping content steering.');
+                this.trigger('error');
+                this.dispose();
+                return;
+            }
+            this.request_ = this.xhr_({
+                uri
+            }, (error, errorInfo) => {
+                if (error) {
+                    // If the client receives HTTP 410 Gone in response to a manifest request,
+                    // it MUST NOT issue another request for that URI for the remainder of the
+                    // playback session. It MAY continue to use the most-recently obtained set
+                    // of Pathways.
+                    if (errorInfo.status === 410) {
+                        this.logger_(`manifest request 410 ${error}.`);
+                        this.logger_(`There will be no more content steering requests to ${uri} this session.`);
+                        this.excludedSteeringManifestURLs.add(uri);
+                        return;
+                    } // If the client receives HTTP 429 Too Many Requests with a Retry-After
+                    // header in response to a manifest request, it SHOULD wait until the time
+                    // specified by the Retry-After header to reissue the request.
+
+                    if (errorInfo.status === 429) {
+                        const retrySeconds = errorInfo.responseHeaders['retry-after'];
+                        this.logger_(`manifest request 429 ${error}.`);
+                        this.logger_(`content steering will retry in ${retrySeconds} seconds.`);
+                        this.startTTLTimeout_(parseInt(retrySeconds, 10));
+                        return;
+                    } // If the Steering Manifest cannot be loaded and parsed correctly, the
+                    // client SHOULD continue to use the previous values and attempt to reload
+                    // it after waiting for the previously-specified TTL (or 5 minutes if
+                    // none).
+
+                    this.logger_(`manifest failed to load ${error}.`);
+                    this.startTTLTimeout_();
+                    return;
+                }
+                const steeringManifestJson = JSON.parse(this.request_.responseText);
+                this.assignSteeringProperties_(steeringManifestJson);
+                this.startTTLTimeout_();
+            });
+        }
+        /**
+         * Set the proxy server URL and add the steering manifest url as a URI encoded parameter.
+         *
+         * @param {string} steeringUrl the steering manifest url
+         * @return the steering manifest url to a proxy server with all parameters set
+         */
+
+        setProxyServerUrl_(steeringUrl) {
+            const steeringUrlObject = new window.URL(steeringUrl);
+            const proxyServerUrlObject = new window.URL(this.proxyServerUrl_);
+            proxyServerUrlObject.searchParams.set('url', encodeURI(steeringUrlObject.toString()));
+            return this.setSteeringParams_(proxyServerUrlObject.toString());
+        }
+        /**
+         * Decodes and parses the data uri encoded steering manifest
+         *
+         * @param {string} dataUri the data uri to be decoded and parsed.
+         */
+
+        decodeDataUriManifest_(dataUri) {
+            const steeringManifestJson = JSON.parse(window.atob(dataUri));
+            this.assignSteeringProperties_(steeringManifestJson);
+        }
+        /**
+         * Set the HLS or DASH content steering manifest request query parameters. For example:
+         * _HLS_pathway="<CURRENT-PATHWAY-ID>" and _HLS_throughput=<THROUGHPUT>
+         * _DASH_pathway and _DASH_throughput
+         *
+         * @param {string} uri to add content steering server parameters to.
+         * @return a new uri as a string with the added steering query parameters.
+         */
+
+        setSteeringParams_(url) {
+            const urlObject = new window.URL(url);
+            const path = this.getPathway();
+            const networkThroughput = this.getBandwidth_();
+            if (path) {
+                const pathwayKey = `_${this.manifestType_}_pathway`;
+                urlObject.searchParams.set(pathwayKey, path);
+            }
+            if (networkThroughput) {
+                const throughputKey = `_${this.manifestType_}_throughput`;
+                urlObject.searchParams.set(throughputKey, networkThroughput);
+            }
+            return urlObject.toString();
+        }
+        /**
+         * Assigns the current steering manifest properties and to the SteeringManifest object
+         *
+         * @param {Object} steeringJson the raw JSON steering manifest
+         */
+
+        assignSteeringProperties_(steeringJson) {
+            this.steeringManifest.version = steeringJson.VERSION;
+            if (!this.steeringManifest.version) {
+                this.logger_(`manifest version is ${steeringJson.VERSION}, which is not supported.`);
+                this.trigger('error');
+                return;
+            }
+            this.steeringManifest.ttl = steeringJson.TTL;
+            this.steeringManifest.reloadUri = steeringJson['RELOAD-URI']; // HLS = PATHWAY-PRIORITY required. DASH = SERVICE-LOCATION-PRIORITY optional
+
+            this.steeringManifest.priority = steeringJson['PATHWAY-PRIORITY'] || steeringJson['SERVICE-LOCATION-PRIORITY']; // Pathway clones to be created/updated in HLS.
+            // See section 7.2 https://datatracker.ietf.org/doc/draft-pantos-hls-rfc8216bis/
+
+            this.steeringManifest.pathwayClones = steeringJson['PATHWAY-CLONES'];
+            this.nextPathwayClones = this.steeringManifest.pathwayClones; // 1. apply first pathway from the array.
+            // 2. if first pathway doesn't exist in manifest, try next pathway.
+            //    a. if all pathways are exhausted, ignore the steering manifest priority.
+            // 3. if segments fail from an established pathway, try all variants/renditions, then exclude the failed pathway.
+            //    a. exclude a pathway for a minimum of the last TTL duration. Meaning, from the next steering response,
+            //       the excluded pathway will be ignored.
+            //       See excludePathway usage in excludePlaylist().
+            // If there are no available pathways, we need to stop content steering.
+
+            if (!this.availablePathways_.size) {
+                this.logger_('There are no available pathways for content steering. Ending content steering.');
+                this.trigger('error');
+                this.dispose();
+            }
+            const chooseNextPathway = pathwaysByPriority => {
+                for (const path of pathwaysByPriority) {
+                    if (this.availablePathways_.has(path)) {
+                        return path;
+                    }
+                } // If no pathway matches, ignore the manifest and choose the first available.
+
+                return [...this.availablePathways_][0];
+            };
+            const nextPathway = chooseNextPathway(this.steeringManifest.priority);
+            if (this.currentPathway !== nextPathway) {
+                this.currentPathway = nextPathway;
+                this.trigger('content-steering');
+            }
+        }
+        /**
+         * Returns the pathway to use for steering decisions
+         *
+         * @return {string} returns the current pathway or the default
+         */
+
+        getPathway() {
+            return this.currentPathway || this.defaultPathway;
+        }
+        /**
+         * Chooses the manifest request URI based on proxy URIs and server URLs.
+         * Also accounts for exclusion on certain manifest URIs.
+         *
+         * @param {string} reloadUri the base uri before parameters
+         *
+         * @return {string} the final URI for the request to the manifest server.
+         */
+
+        getRequestURI(reloadUri) {
+            if (!reloadUri) {
+                return null;
+            }
+            const isExcluded = uri => this.excludedSteeringManifestURLs.has(uri);
+            if (this.proxyServerUrl_) {
+                const proxyURI = this.setProxyServerUrl_(reloadUri);
+                if (!isExcluded(proxyURI)) {
+                    return proxyURI;
+                }
+            }
+            const steeringURI = this.setSteeringParams_(reloadUri);
+            if (!isExcluded(steeringURI)) {
+                return steeringURI;
+            } // Return nothing if all valid manifest URIs are excluded.
+
+            return null;
+        }
+        /**
+         * Start the timeout for re-requesting the steering manifest at the TTL interval.
+         *
+         * @param {number} ttl time in seconds of the timeout. Defaults to the
+         *        ttl interval in the steering manifest
+         */
+
+        startTTLTimeout_(ttl = this.steeringManifest.ttl) {
+            // 300 (5 minutes) is the default value.
+            const ttlMS = ttl * 1000;
+            this.ttlTimeout_ = window.setTimeout(() => {
+                this.requestSteeringManifest();
+            }, ttlMS);
+        }
+        /**
+         * Clear the TTL timeout if necessary.
+         */
+
+        clearTTLTimeout_() {
+            window.clearTimeout(this.ttlTimeout_);
+            this.ttlTimeout_ = null;
+        }
+        /**
+         * aborts any current steering xhr and sets the current request object to null
+         */
+
+        abort() {
+            if (this.request_) {
+                this.request_.abort();
+            }
+            this.request_ = null;
+        }
+        /**
+         * aborts steering requests clears the ttl timeout and resets all properties.
+         */
+
+        dispose() {
+            this.off('content-steering');
+            this.off('error');
+            this.abort();
+            this.clearTTLTimeout_();
+            this.currentPathway = null;
+            this.defaultPathway = null;
+            this.queryBeforeStart = null;
+            this.proxyServerUrl_ = null;
+            this.manifestType_ = null;
+            this.ttlTimeout_ = null;
+            this.request_ = null;
+            this.excludedSteeringManifestURLs = new Set();
+            this.availablePathways_ = new Set();
+            this.steeringManifest = new SteeringManifest();
+        }
+        /**
+         * adds a pathway to the available pathways set
+         *
+         * @param {string} pathway the pathway string to add
+         */
+
+        addAvailablePathway(pathway) {
+            if (pathway) {
+                this.availablePathways_.add(pathway);
+            }
+        }
+        /**
+         * Clears all pathways from the available pathways set
+         */
+
+        clearAvailablePathways() {
+            this.availablePathways_.clear();
+        }
+        /**
+         * Removes a pathway from the available pathways set.
+         */
+
+        excludePathway(pathway) {
+            return this.availablePathways_.delete(pathway);
+        }
+        /**
+         * Checks the refreshed DASH manifest content steering tag for changes.
+         *
+         * @param {string} baseURL new steering tag on DASH manifest refresh
+         * @param {Object} newTag the new tag to check for changes
+         * @return a true or false whether the new tag has different values
+         */
+
+        didDASHTagChange(baseURL, newTag) {
+            return !newTag && this.steeringManifest.reloadUri || newTag && (resolveUrl(baseURL, newTag.serverURL) !== this.steeringManifest.reloadUri || newTag.defaultServiceLocation !== this.defaultPathway || newTag.queryBeforeStart !== this.queryBeforeStart || newTag.proxyServerURL !== this.proxyServerUrl_);
+        }
+        getAvailablePathways() {
+            return this.availablePathways_;
+        }
+    }
+
     /**
      * @file playlist-controller.js
      */
-    const ABORT_EARLY_EXCLUSION_SECONDS = 60 * 2;
+    const ABORT_EARLY_EXCLUSION_SECONDS = 10;
     let Vhs$1; // SegmentLoader stats that need to have each loader's
     // values summed to calculate the final value
 
@@ -57014,6 +60844,7 @@
             this.sourceUpdater_ = new SourceUpdater(this.mediaSource);
             this.inbandTextTracks_ = {};
             this.timelineChangeController_ = new TimelineChangeController();
+            this.keyStatusMap_ = new Map();
             const segmentLoaderSettings = {
                 vhs: this.vhs_,
                 parse708captions: options.parse708captions,
@@ -57034,13 +60865,18 @@
                 cacheEncryptionKeys,
                 sourceUpdater: this.sourceUpdater_,
                 timelineChangeController: this.timelineChangeController_,
-                exactManifestTimings: options.exactManifestTimings
+                exactManifestTimings: options.exactManifestTimings,
+                addMetadataToTextTrack: this.addMetadataToTextTrack.bind(this)
             }; // The source type check not only determines whether a special DASH playlist loader
             // should be used, but also covers the case where the provided src is a vhs-json
             // manifest object (instead of a URL). In the case of vhs-json, the default
             // PlaylistLoader should be used.
 
-            this.mainPlaylistLoader_ = this.sourceType_ === 'dash' ? new DashPlaylistLoader(src, this.vhs_, this.requestOptions_) : new PlaylistLoader(src, this.vhs_, this.requestOptions_);
+            this.mainPlaylistLoader_ = this.sourceType_ === 'dash' ? new DashPlaylistLoader(src, this.vhs_, merge(this.requestOptions_, {
+                addMetadataToTextTrack: this.addMetadataToTextTrack.bind(this)
+            })) : new PlaylistLoader(src, this.vhs_, merge(this.requestOptions_, {
+                addDateRangesToTextTrack: this.addDateRangesToTextTrack_.bind(this)
+            }));
             this.setupMainPlaylistLoaderListeners_(); // setup segment loaders
             // combined audio/video or just video when alternate audio track is selected
 
@@ -57070,6 +60906,10 @@
                     tech.addWebVttScript_();
                 })
             }), options);
+            const getBandwidth = () => {
+                return this.mainSegmentLoader_.bandwidth;
+            };
+            this.contentSteeringController_ = new ContentSteeringController(this.vhs_.xhr, getBandwidth);
             this.setupSegmentLoaderListeners_();
             if (this.bufferBasedABR) {
                 this.mainPlaylistLoader_.one('loadedplaylist', () => this.startABRTimer_());
@@ -57145,7 +60985,7 @@
         switchMedia_(playlist, cause, delay) {
             const oldMedia = this.media();
             const oldId = oldMedia && (oldMedia.id || oldMedia.uri);
-            const newId = playlist.id || playlist.uri;
+            const newId = playlist && (playlist.id || playlist.uri);
             if (oldId && oldId !== newId) {
                 this.logger_(`switch media ${oldId} -> ${newId} from ${cause}`);
                 this.tech_.trigger({
@@ -57155,6 +60995,32 @@
             }
             this.mainPlaylistLoader_.media(playlist, delay);
         }
+        /**
+         * A function that ensures we switch our playlists inside of `mediaTypes`
+         * to match the current `serviceLocation` provided by the contentSteering controller.
+         * We want to check media types of `AUDIO`, `SUBTITLES`, and `CLOSED-CAPTIONS`.
+         *
+         * This should only be called on a DASH playback scenario while using content steering.
+         * This is necessary due to differences in how media in HLS manifests are generally tied to
+         * a video playlist, where in DASH that is not always the case.
+         */
+
+        switchMediaForDASHContentSteering_() {
+            ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {
+                const mediaType = this.mediaTypes_[type];
+                const activeGroup = mediaType ? mediaType.activeGroup() : null;
+                const pathway = this.contentSteeringController_.getPathway();
+                if (activeGroup && pathway) {
+                    // activeGroup can be an array or a single group
+                    const mediaPlaylists = activeGroup.length ? activeGroup[0].playlists : activeGroup.playlists;
+                    const dashMediaPlaylists = mediaPlaylists.filter(p => p.attributes.serviceLocation === pathway); // Switch the current active playlist to the correct CDN
+
+                    if (dashMediaPlaylists.length) {
+                        this.mediaTypes_[type].activePlaylistLoader.media(dashMediaPlaylists[0]);
+                    }
+                }
+            });
+        }
         /**
          * Start a timer that periodically calls checkABR_
          *
@@ -57303,8 +61169,11 @@
                 }
                 let updatedPlaylist = this.mainPlaylistLoader_.media();
                 if (!updatedPlaylist) {
-                    // exclude any variants that are not supported by the browser before selecting
+                    // Add content steering listeners on first load and init.
+                    this.attachContentSteeringListeners_();
+                    this.initContentSteeringController_(); // exclude any variants that are not supported by the browser before selecting
                     // an initial media as the playlist selectors do not consider browser support
+
                     this.excludeUnsupportedVariants_();
                     let selectedMedia;
                     if (this.enableLowInitialPlaylist) {
@@ -57353,13 +61222,21 @@
                 } else {
                     this.requestOptions_.timeout = requestTimeout;
                 }
-                this.mainPlaylistLoader_.load(); // TODO: Create a new event on the PlaylistLoader that signals
+                if (this.sourceType_ === 'dash') {
+                    // we don't want to re-request the same hls playlist right after it was changed
+                    this.mainPlaylistLoader_.load();
+                } // TODO: Create a new event on the PlaylistLoader that signals
                 // that the segments have changed in some way and use that to
                 // update the SegmentLoader instead of doing it twice here and
                 // on `loadedplaylist`
 
+                this.mainSegmentLoader_.pause();
                 this.mainSegmentLoader_.playlist(media, this.requestOptions_);
-                this.mainSegmentLoader_.load();
+                if (this.waitingForFastQualityPlaylistReceived_) {
+                    this.runFastQualitySwitch_();
+                } else {
+                    this.mainSegmentLoader_.load();
+                }
                 this.tech_.trigger({
                     type: 'mediachange',
                     bubbles: true
@@ -57420,7 +61297,11 @@
             // update the SegmentLoader instead of doing it twice here and
             // on `mediachange`
 
+            this.mainSegmentLoader_.pause();
             this.mainSegmentLoader_.playlist(updatedPlaylist, this.requestOptions_);
+            if (this.waitingForFastQualityPlaylistReceived_) {
+                this.runFastQualitySwitch_();
+            }
             this.updateDuration(!updatedPlaylist.endList); // If the player isn't paused, ensure that the segment loader is running,
             // as it is possible that it was temporarily stopped while waiting for
             // a playlist (e.g., in case the playlist errored and we re-requested it).
@@ -57635,25 +61516,26 @@
          */
 
         fastQualityChange_(media = this.selectPlaylist()) {
-            if (media === this.mainPlaylistLoader_.media()) {
+            if (media && media === this.mainPlaylistLoader_.media()) {
                 this.logger_('skipping fastQualityChange because new media is same as old');
                 return;
             }
-            this.switchMedia_(media, 'fast-quality'); // Delete all buffered data to allow an immediate quality switch, then seek to give
+            this.switchMedia_(media, 'fast-quality'); // we would like to avoid race condition when we call fastQuality,
+            // reset everything and start loading segments from prev segments instead of new because new playlist is not received yet
+
+            this.waitingForFastQualityPlaylistReceived_ = true;
+        }
+        runFastQualitySwitch_() {
+            this.waitingForFastQualityPlaylistReceived_ = false; // Delete all buffered data to allow an immediate quality switch, then seek to give
             // the browser a kick to remove any cached frames from the previous rendtion (.04 seconds
-            // ahead is roughly the minimum that will accomplish this across a variety of content
+            // ahead was roughly the minimum that will accomplish this across a variety of content
             // in IE and Edge, but seeking in place is sufficient on all other browsers)
             // Edge/IE bug: https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/14600375/
             // Chrome bug: https://bugs.chromium.org/p/chromium/issues/detail?id=651904
 
+            this.mainSegmentLoader_.pause();
             this.mainSegmentLoader_.resetEverything(() => {
-                // Since this is not a typical seek, we avoid the seekTo method which can cause segments
-                // from the previously enabled rendition to load before the new playlist has finished loading
-                if (videojs.browser.IE_VERSION || videojs.browser.IS_EDGE) {
-                    this.tech_.setCurrentTime(this.tech_.currentTime() + 0.04);
-                } else {
-                    this.tech_.setCurrentTime(this.tech_.currentTime());
-                }
+                this.tech_.setCurrentTime(this.tech_.currentTime());
             }); // don't need to reset audio as it is reset when media changes
         }
         /**
@@ -57693,29 +61575,29 @@
 
             if (!media || this.tech_.paused() || this.hasPlayed_) {
                 return false;
-            } // when the video is a live stream
+            } // when the video is a live stream and/or has a start time
 
-            if (!media.endList) {
+            if (!media.endList || media.start) {
                 const seekable = this.seekable();
                 if (!seekable.length) {
-                    // without a seekable range, the player cannot seek to begin buffering at the live
-                    // point
+                    // without a seekable range, the player cannot seek to begin buffering at the
+                    // live or start point
                     return false;
                 }
-                if (videojs.browser.IE_VERSION && this.tech_.readyState() === 0) {
-                    // IE11 throws an InvalidStateError if you try to set currentTime while the
-                    // readyState is 0, so it must be delayed until the tech fires loadedmetadata.
-                    this.tech_.one('loadedmetadata', () => {
-                        this.trigger('firstplay');
-                        this.tech_.setCurrentTime(seekable.end(0));
-                        this.hasPlayed_ = true;
-                    });
-                    return false;
+                const seekableEnd = seekable.end(0);
+                let startPoint = seekableEnd;
+                if (media.start) {
+                    const offset = media.start.timeOffset;
+                    if (offset < 0) {
+                        startPoint = Math.max(seekableEnd + offset, seekable.start(0));
+                    } else {
+                        startPoint = Math.min(seekableEnd, offset);
+                    }
                 } // trigger firstplay to inform the source handler to ignore the next seek event
 
                 this.trigger('firstplay'); // seek to the live point
 
-                this.tech_.setCurrentTime(seekable.end(0));
+                this.tech_.setCurrentTime(startPoint);
             }
             this.hasPlayed_ = true; // we can begin loading now that everything is ready
 
@@ -57880,10 +61762,22 @@
                 return this.mainPlaylistLoader_.load(isFinalRendition);
             }
             if (isFinalRendition) {
-                // Since we're on the final non-excluded playlist, and we're about to exclude
+                // If we're content steering, try other pathways.
+                if (this.main().contentSteering) {
+                    const pathway = this.pathwayAttribute_(playlistToExclude); // Ignore at least 1 steering manifest refresh.
+
+                    const reIncludeDelay = this.contentSteeringController_.steeringManifest.ttl * 1000;
+                    this.contentSteeringController_.excludePathway(pathway);
+                    this.excludeThenChangePathway_();
+                    setTimeout(() => {
+                        this.contentSteeringController_.addAvailablePathway(pathway);
+                    }, reIncludeDelay);
+                    return;
+                } // Since we're on the final non-excluded playlist, and we're about to exclude
                 // it, instead of erring the player or retrying this playlist, clear out the current
                 // exclusion list. This allows other playlists to be attempted in case any have been
                 // fixed.
+
                 let reincluded = false;
                 playlists.forEach(playlist => {
                     // skip current playlist which is about to be excluded
@@ -58027,15 +61921,15 @@
             } // cancel outstanding requests so we begin buffering at the new
             // location
 
+            this.mainSegmentLoader_.pause();
             this.mainSegmentLoader_.resetEverything();
-            this.mainSegmentLoader_.abort();
             if (this.mediaTypes_.AUDIO.activePlaylistLoader) {
+                this.audioSegmentLoader_.pause();
                 this.audioSegmentLoader_.resetEverything();
-                this.audioSegmentLoader_.abort();
             }
             if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {
+                this.subtitleSegmentLoader_.pause();
                 this.subtitleSegmentLoader_.resetEverything();
-                this.subtitleSegmentLoader_.abort();
             } // start segment loader loading in case they are paused
 
             this.load();
@@ -58224,6 +62118,8 @@
             this.decrypter_.terminate();
             this.mainPlaylistLoader_.dispose();
             this.mainSegmentLoader_.dispose();
+            this.contentSteeringController_.dispose();
+            this.keyStatusMap_.clear();
             if (this.loadOnPlay_) {
                 this.tech_.off('play', this.loadOnPlay_);
             }
@@ -58544,6 +62440,335 @@
         bufferHighWaterLine() {
             return Config.BUFFER_HIGH_WATER_LINE;
         }
+        addDateRangesToTextTrack_(dateRanges) {
+            createMetadataTrackIfNotExists(this.inbandTextTracks_, 'com.apple.streaming', this.tech_);
+            addDateRangeMetadata({
+                inbandTextTracks: this.inbandTextTracks_,
+                dateRanges
+            });
+        }
+        addMetadataToTextTrack(dispatchType, metadataArray, videoDuration) {
+            const timestampOffset = this.sourceUpdater_.videoBuffer ? this.sourceUpdater_.videoTimestampOffset() : this.sourceUpdater_.audioTimestampOffset(); // There's potentially an issue where we could double add metadata if there's a muxed
+            // audio/video source with a metadata track, and an alt audio with a metadata track.
+            // However, this probably won't happen, and if it does it can be handled then.
+
+            createMetadataTrackIfNotExists(this.inbandTextTracks_, dispatchType, this.tech_);
+            addMetadata({
+                inbandTextTracks: this.inbandTextTracks_,
+                metadataArray,
+                timestampOffset,
+                videoDuration
+            });
+        }
+        /**
+         * Utility for getting the pathway or service location from an HLS or DASH playlist.
+         *
+         * @param {Object} playlist for getting pathway from.
+         * @return the pathway attribute of a playlist
+         */
+
+        pathwayAttribute_(playlist) {
+            return playlist.attributes['PATHWAY-ID'] || playlist.attributes.serviceLocation;
+        }
+        /**
+         * Initialize available pathways and apply the tag properties.
+         */
+
+        initContentSteeringController_() {
+            const main = this.main();
+            if (!main.contentSteering) {
+                return;
+            }
+            for (const playlist of main.playlists) {
+                this.contentSteeringController_.addAvailablePathway(this.pathwayAttribute_(playlist));
+            }
+            this.contentSteeringController_.assignTagProperties(main.uri, main.contentSteering); // request the steering manifest immediately if queryBeforeStart is set.
+
+            if (this.contentSteeringController_.queryBeforeStart) {
+                // When queryBeforeStart is true, initial request should omit steering parameters.
+                this.contentSteeringController_.requestSteeringManifest(true);
+                return;
+            } // otherwise start content steering after playback starts
+
+            this.tech_.one('canplay', () => {
+                this.contentSteeringController_.requestSteeringManifest();
+            });
+        }
+        /**
+         * Reset the content steering controller and re-init.
+         */
+
+        resetContentSteeringController_() {
+            this.contentSteeringController_.clearAvailablePathways();
+            this.contentSteeringController_.dispose();
+            this.initContentSteeringController_();
+        }
+        /**
+         * Attaches the listeners for content steering.
+         */
+
+        attachContentSteeringListeners_() {
+            this.contentSteeringController_.on('content-steering', this.excludeThenChangePathway_.bind(this));
+            if (this.sourceType_ === 'dash') {
+                this.mainPlaylistLoader_.on('loadedplaylist', () => {
+                    const main = this.main(); // check if steering tag or pathways changed.
+
+                    const didDashTagChange = this.contentSteeringController_.didDASHTagChange(main.uri, main.contentSteering);
+                    const didPathwaysChange = () => {
+                        const availablePathways = this.contentSteeringController_.getAvailablePathways();
+                        const newPathways = [];
+                        for (const playlist of main.playlists) {
+                            const serviceLocation = playlist.attributes.serviceLocation;
+                            if (serviceLocation) {
+                                newPathways.push(serviceLocation);
+                                if (!availablePathways.has(serviceLocation)) {
+                                    return true;
+                                }
+                            }
+                        } // If we have no new serviceLocations and previously had availablePathways
+
+                        if (!newPathways.length && availablePathways.size) {
+                            return true;
+                        }
+                        return false;
+                    };
+                    if (didDashTagChange || didPathwaysChange()) {
+                        this.resetContentSteeringController_();
+                    }
+                });
+            }
+        }
+        /**
+         * Simple exclude and change playlist logic for content steering.
+         */
+
+        excludeThenChangePathway_() {
+            const currentPathway = this.contentSteeringController_.getPathway();
+            if (!currentPathway) {
+                return;
+            }
+            this.handlePathwayClones_();
+            const main = this.main();
+            const playlists = main.playlists;
+            const ids = new Set();
+            let didEnablePlaylists = false;
+            Object.keys(playlists).forEach(key => {
+                const variant = playlists[key];
+                const pathwayId = this.pathwayAttribute_(variant);
+                const differentPathwayId = pathwayId && currentPathway !== pathwayId;
+                const steeringExclusion = variant.excludeUntil === Infinity && variant.lastExcludeReason_ === 'content-steering';
+                if (steeringExclusion && !differentPathwayId) {
+                    delete variant.excludeUntil;
+                    delete variant.lastExcludeReason_;
+                    didEnablePlaylists = true;
+                }
+                const noExcludeUntil = !variant.excludeUntil && variant.excludeUntil !== Infinity;
+                const shouldExclude = !ids.has(variant.id) && differentPathwayId && noExcludeUntil;
+                if (!shouldExclude) {
+                    return;
+                }
+                ids.add(variant.id);
+                variant.excludeUntil = Infinity;
+                variant.lastExcludeReason_ = 'content-steering'; // TODO: kind of spammy, maybe move this.
+
+                this.logger_(`excluding ${variant.id} for ${variant.lastExcludeReason_}`);
+            });
+            if (this.contentSteeringController_.manifestType_ === 'DASH') {
+                Object.keys(this.mediaTypes_).forEach(key => {
+                    const type = this.mediaTypes_[key];
+                    if (type.activePlaylistLoader) {
+                        const currentPlaylist = type.activePlaylistLoader.media_; // Check if the current media playlist matches the current CDN
+
+                        if (currentPlaylist && currentPlaylist.attributes.serviceLocation !== currentPathway) {
+                            didEnablePlaylists = true;
+                        }
+                    }
+                });
+            }
+            if (didEnablePlaylists) {
+                this.changeSegmentPathway_();
+            }
+        }
+        /**
+         * Add, update, or delete playlists and media groups for
+         * the pathway clones for HLS Content Steering.
+         *
+         * See https://datatracker.ietf.org/doc/draft-pantos-hls-rfc8216bis/
+         *
+         * NOTE: Pathway cloning does not currently support the `PER_VARIANT_URIS` and
+         * `PER_RENDITION_URIS` as we do not handle `STABLE-VARIANT-ID` or
+         * `STABLE-RENDITION-ID` values.
+         */
+
+        handlePathwayClones_() {
+            const main = this.main();
+            const playlists = main.playlists;
+            const currentPathwayClones = this.contentSteeringController_.currentPathwayClones;
+            const nextPathwayClones = this.contentSteeringController_.nextPathwayClones;
+            const hasClones = currentPathwayClones && currentPathwayClones.size || nextPathwayClones && nextPathwayClones.size;
+            if (!hasClones) {
+                return;
+            }
+            for (const [id, clone] of currentPathwayClones.entries()) {
+                const newClone = nextPathwayClones.get(id); // Delete the old pathway clone.
+
+                if (!newClone) {
+                    this.mainPlaylistLoader_.updateOrDeleteClone(clone);
+                    this.contentSteeringController_.excludePathway(id);
+                }
+            }
+            for (const [id, clone] of nextPathwayClones.entries()) {
+                const oldClone = currentPathwayClones.get(id); // Create a new pathway if it is a new pathway clone object.
+
+                if (!oldClone) {
+                    const playlistsToClone = playlists.filter(p => {
+                        return p.attributes['PATHWAY-ID'] === clone['BASE-ID'];
+                    });
+                    playlistsToClone.forEach(p => {
+                        this.mainPlaylistLoader_.addClonePathway(clone, p);
+                    });
+                    this.contentSteeringController_.addAvailablePathway(id);
+                    continue;
+                } // There have not been changes to the pathway clone object, so skip.
+
+                if (this.equalPathwayClones_(oldClone, clone)) {
+                    continue;
+                } // Update a preexisting cloned pathway.
+                // True is set for the update flag.
+
+                this.mainPlaylistLoader_.updateOrDeleteClone(clone, true);
+                this.contentSteeringController_.addAvailablePathway(id);
+            } // Deep copy contents of next to current pathways.
+
+            this.contentSteeringController_.currentPathwayClones = new Map(JSON.parse(JSON.stringify([...nextPathwayClones])));
+        }
+        /**
+         * Determines whether two pathway clone objects are equivalent.
+         *
+         * @param {Object} a The first pathway clone object.
+         * @param {Object} b The second pathway clone object.
+         * @return {boolean} True if the pathway clone objects are equal, false otherwise.
+         */
+
+        equalPathwayClones_(a, b) {
+            if (a['BASE-ID'] !== b['BASE-ID'] || a.ID !== b.ID || a['URI-REPLACEMENT'].HOST !== b['URI-REPLACEMENT'].HOST) {
+                return false;
+            }
+            const aParams = a['URI-REPLACEMENT'].PARAMS;
+            const bParams = b['URI-REPLACEMENT'].PARAMS; // We need to iterate through both lists of params because one could be
+            // missing a parameter that the other has.
+
+            for (const p in aParams) {
+                if (aParams[p] !== bParams[p]) {
+                    return false;
+                }
+            }
+            for (const p in bParams) {
+                if (aParams[p] !== bParams[p]) {
+                    return false;
+                }
+            }
+            return true;
+        }
+        /**
+         * Changes the current playlists for audio, video and subtitles after a new pathway
+         * is chosen from content steering.
+         */
+
+        changeSegmentPathway_() {
+            const nextPlaylist = this.selectPlaylist();
+            this.pauseLoading(); // Switch audio and text track playlists if necessary in DASH
+
+            if (this.contentSteeringController_.manifestType_ === 'DASH') {
+                this.switchMediaForDASHContentSteering_();
+            }
+            this.switchMedia_(nextPlaylist, 'content-steering');
+        }
+        /**
+         * Iterates through playlists and check their keyId set and compare with the
+         * keyStatusMap, only enable playlists that have a usable key. If the playlist
+         * has no keyId leave it enabled by default.
+         */
+
+        excludeNonUsablePlaylistsByKeyId_() {
+            if (!this.mainPlaylistLoader_ || !this.mainPlaylistLoader_.main) {
+                return;
+            }
+            let nonUsableKeyStatusCount = 0;
+            const NON_USABLE = 'non-usable';
+            this.mainPlaylistLoader_.main.playlists.forEach(playlist => {
+                const keyIdSet = this.mainPlaylistLoader_.getKeyIdSet(playlist); // If the playlist doesn't have keyIDs lets not exclude it.
+
+                if (!keyIdSet || !keyIdSet.size) {
+                    return;
+                }
+                keyIdSet.forEach(key => {
+                    const USABLE = 'usable';
+                    const hasUsableKeyStatus = this.keyStatusMap_.has(key) && this.keyStatusMap_.get(key) === USABLE;
+                    const nonUsableExclusion = playlist.lastExcludeReason_ === NON_USABLE && playlist.excludeUntil === Infinity;
+                    if (!hasUsableKeyStatus) {
+                        // Only exclude playlists that haven't already been excluded as non-usable.
+                        if (playlist.excludeUntil !== Infinity && playlist.lastExcludeReason_ !== NON_USABLE) {
+                            playlist.excludeUntil = Infinity;
+                            playlist.lastExcludeReason_ = NON_USABLE;
+                            this.logger_(`excluding playlist ${playlist.id} because the key ID ${key} doesn't exist in the keyStatusMap or is not ${USABLE}`);
+                        } // count all nonUsableKeyStatus
+
+                        nonUsableKeyStatusCount++;
+                    } else if (hasUsableKeyStatus && nonUsableExclusion) {
+                        delete playlist.excludeUntil;
+                        delete playlist.lastExcludeReason_;
+                        this.logger_(`enabling playlist ${playlist.id} because key ID ${key} is ${USABLE}`);
+                    }
+                });
+            }); // If for whatever reason every playlist has a non usable key status. Lets try re-including the SD renditions as a failsafe.
+
+            if (nonUsableKeyStatusCount >= this.mainPlaylistLoader_.main.playlists.length) {
+                this.mainPlaylistLoader_.main.playlists.forEach(playlist => {
+                    const isNonHD = playlist && playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height < 720;
+                    const excludedForNonUsableKey = playlist.excludeUntil === Infinity && playlist.lastExcludeReason_ === NON_USABLE;
+                    if (isNonHD && excludedForNonUsableKey) {
+                        // Only delete the excludeUntil so we don't try and re-exclude these playlists.
+                        delete playlist.excludeUntil;
+                        videojs.log.warn(`enabling non-HD playlist ${playlist.id} because all playlists were excluded due to ${NON_USABLE} key IDs`);
+                    }
+                });
+            }
+        }
+        /**
+         * Adds a keystatus to the keystatus map, tries to convert to string if necessary.
+         *
+         * @param {any} keyId the keyId to add a status for
+         * @param {string} status the status of the keyId
+         */
+
+        addKeyStatus_(keyId, status) {
+            const isString = typeof keyId === 'string';
+            const keyIdHexString = isString ? keyId : bufferToHexString(keyId);
+            const formattedKeyIdString = keyIdHexString.slice(0, 32).toLowerCase();
+            this.logger_(`KeyStatus '${status}' with key ID ${formattedKeyIdString} added to the keyStatusMap`);
+            this.keyStatusMap_.set(formattedKeyIdString, status);
+        }
+        /**
+         * Utility function for adding key status to the keyStatusMap and filtering usable encrypted playlists.
+         *
+         * @param {any} keyId the keyId from the keystatuschange event
+         * @param {string} status the key status string
+         */
+
+        updatePlaylistByKeyStatus(keyId, status) {
+            this.addKeyStatus_(keyId, status);
+            if (!this.waitingForFastQualityPlaylistReceived_) {
+                this.excludeNonUsableThenChangePlaylist_();
+            } // Listen to loadedplaylist with a single listener and check for new contentProtection elements when a playlist is updated.
+
+            this.mainPlaylistLoader_.off('loadedplaylist', this.excludeNonUsableThenChangePlaylist_.bind(this));
+            this.mainPlaylistLoader_.on('loadedplaylist', this.excludeNonUsableThenChangePlaylist_.bind(this));
+        }
+        excludeNonUsableThenChangePlaylist_() {
+            this.excludeNonUsablePlaylistsByKeyId_();
+            this.fastQualityChange_();
+        }
     }
 
     /**
@@ -59054,7 +63279,8 @@
             }
             let allowedEnd = seekable.end(seekable.length - 1) + SAFE_TIME_DELTA;
             const isLive = !playlist.endList;
-            if (isLive && allowSeeksWithinUnsafeLiveWindow) {
+            const isLLHLS = typeof playlist.partTargetDuration === 'number';
+            if (isLive && (isLLHLS || allowSeeksWithinUnsafeLiveWindow)) {
                 allowedEnd = seekable.end(seekable.length - 1) + playlist.targetDuration * 3;
             }
             if (currentTime > allowedEnd) {
@@ -59291,10 +63517,10 @@
     const reloadSourceOnError = function (options) {
         initPlugin(this, options);
     };
-    var version$4 = "3.0.2";
-    var version$3 = "6.3.0";
-    var version$2 = "1.0.1";
-    var version$1 = "6.0.0";
+    var version$4 = "3.10.0";
+    var version$3 = "7.0.2";
+    var version$2 = "1.3.0";
+    var version$1 = "7.1.0";
     var version = "4.0.1";
 
     /**
@@ -59505,8 +63731,8 @@
         const keySystemsOptionsArr = getAllPsshKeySystemsOptions(playlists, Object.keys(sourceKeySystems));
         const initializationFinishedPromises = [];
         const keySessionCreatedPromises = []; // Since PSSH values are interpreted as initData, EME will dedupe any duplicates. The
-        // only place where it should not be deduped is for ms-prefixed APIs, but the early
-        // return for IE11 above, and the existence of modern EME APIs in addition to
+        // only place where it should not be deduped is for ms-prefixed APIs, but
+        // the existence of modern EME APIs in addition to
         // ms-prefixed APIs on Edge should prevent this from being a concern.
         // initializeMediaKeys also won't use the webkit-prefixed APIs.
 
@@ -59629,6 +63855,64 @@
 
         return dataUri;
     };
+    /**
+     * Adds a request hook to an xhr object
+     *
+     * @param {Object} xhr object to add the onRequest hook to
+     * @param {function} callback hook function for an xhr request
+     */
+
+    const addOnRequestHook = (xhr, callback) => {
+        if (!xhr._requestCallbackSet) {
+            xhr._requestCallbackSet = new Set();
+        }
+        xhr._requestCallbackSet.add(callback);
+    };
+    /**
+     * Adds a response hook to an xhr object
+     *
+     * @param {Object} xhr object to add the onResponse hook to
+     * @param {function} callback hook function for an xhr response
+     */
+
+    const addOnResponseHook = (xhr, callback) => {
+        if (!xhr._responseCallbackSet) {
+            xhr._responseCallbackSet = new Set();
+        }
+        xhr._responseCallbackSet.add(callback);
+    };
+    /**
+     * Removes a request hook on an xhr object, deletes the onRequest set if empty.
+     *
+     * @param {Object} xhr object to remove the onRequest hook from
+     * @param {function} callback hook function to remove
+     */
+
+    const removeOnRequestHook = (xhr, callback) => {
+        if (!xhr._requestCallbackSet) {
+            return;
+        }
+        xhr._requestCallbackSet.delete(callback);
+        if (!xhr._requestCallbackSet.size) {
+            delete xhr._requestCallbackSet;
+        }
+    };
+    /**
+     * Removes a response hook on an xhr object, deletes the onResponse set if empty.
+     *
+     * @param {Object} xhr object to remove the onResponse hook from
+     * @param {function} callback hook function to remove
+     */
+
+    const removeOnResponseHook = (xhr, callback) => {
+        if (!xhr._responseCallbackSet) {
+            return;
+        }
+        xhr._responseCallbackSet.delete(callback);
+        if (!xhr._responseCallbackSet.size) {
+            delete xhr._responseCallbackSet;
+        }
+    };
     /**
      * Whether the browser has built-in HLS support.
      */
@@ -59681,6 +63965,42 @@
     Vhs.isSupported = function () {
         return videojs.log.warn('VHS is no longer a tech. Please remove it from ' + 'your player\'s techOrder.');
     };
+    /**
+     * A global function for setting an onRequest hook
+     *
+     * @param {function} callback for request modifiction
+     */
+
+    Vhs.xhr.onRequest = function (callback) {
+        addOnRequestHook(Vhs.xhr, callback);
+    };
+    /**
+     * A global function for setting an onResponse hook
+     *
+     * @param {callback} callback for response data retrieval
+     */
+
+    Vhs.xhr.onResponse = function (callback) {
+        addOnResponseHook(Vhs.xhr, callback);
+    };
+    /**
+     * Deletes a global onRequest callback if it exists
+     *
+     * @param {function} callback to delete from the global set
+     */
+
+    Vhs.xhr.offRequest = function (callback) {
+        removeOnRequestHook(Vhs.xhr, callback);
+    };
+    /**
+     * Deletes a global onResponse callback if it exists
+     *
+     * @param {function} callback to delete from the global set
+     */
+
+    Vhs.xhr.offResponse = function (callback) {
+        removeOnResponseHook(Vhs.xhr, callback);
+    };
     const Component = videojs.getComponent('Component');
     /**
      * The Vhs Handler object, where we orchestrate all of the parts
@@ -59750,12 +64070,21 @@
             });
             this.on(this.tech_, 'play', this.play);
         }
-        setOptions_() {
-            // defaults
+        /**
+         * Set VHS options based on options from configuration, as well as partial
+         * options to be passed at a later time.
+         *
+         * @param {Object} options A partial chunk of config options
+         */
+
+        setOptions_(options = {}) {
+            this.options_ = merge(this.options_, options); // defaults
+
             this.options_.withCredentials = this.options_.withCredentials || false;
             this.options_.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions === false ? false : true;
             this.options_.useDevicePixelRatio = this.options_.useDevicePixelRatio || false;
             this.options_.useBandwidthFromLocalStorage = typeof this.source_.useBandwidthFromLocalStorage !== 'undefined' ? this.source_.useBandwidthFromLocalStorage : this.options_.useBandwidthFromLocalStorage || false;
+            this.options_.useForcedSubtitles = this.options_.useForcedSubtitles || false;
             this.options_.useNetworkInformationApi = this.options_.useNetworkInformationApi || false;
             this.options_.useDtsForTimestampOffset = this.options_.useDtsForTimestampOffset || false;
             this.options_.customTagParsers = this.options_.customTagParsers || [];
@@ -59764,7 +64093,7 @@
             this.options_.llhls = this.options_.llhls === false ? false : true;
             this.options_.bufferBasedABR = this.options_.bufferBasedABR || false;
             if (typeof this.options_.playlistExclusionDuration !== 'number') {
-                this.options_.playlistExclusionDuration = 5 * 60;
+                this.options_.playlistExclusionDuration = 60;
             }
             if (typeof this.options_.bandwidth !== 'number') {
                 if (this.options_.useBandwidthFromLocalStorage) {
@@ -59794,13 +64123,17 @@
 
             this.options_.enableLowInitialPlaylist = this.options_.enableLowInitialPlaylist && this.options_.bandwidth === Config.INITIAL_BANDWIDTH; // grab options passed to player.src
 
-            ['withCredentials', 'useDevicePixelRatio', 'limitRenditionByPlayerDimensions', 'bandwidth', 'customTagParsers', 'customTagMappers', 'cacheEncryptionKeys', 'playlistSelector', 'initialPlaylistSelector', 'bufferBasedABR', 'liveRangeSafeTimeDelta', 'llhls', 'useNetworkInformationApi', 'useDtsForTimestampOffset', 'exactManifestTimings', 'leastPixelDiffSelector'].forEach(option => {
+            ['withCredentials', 'useDevicePixelRatio', 'limitRenditionByPlayerDimensions', 'bandwidth', 'customTagParsers', 'customTagMappers', 'cacheEncryptionKeys', 'playlistSelector', 'initialPlaylistSelector', 'bufferBasedABR', 'liveRangeSafeTimeDelta', 'llhls', 'useForcedSubtitles', 'useNetworkInformationApi', 'useDtsForTimestampOffset', 'exactManifestTimings', 'leastPixelDiffSelector'].forEach(option => {
                 if (typeof this.source_[option] !== 'undefined') {
                     this.options_[option] = this.source_[option];
                 }
             });
             this.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions;
             this.useDevicePixelRatio = this.options_.useDevicePixelRatio;
+        } // alias for public method to set options
+
+        setOptions(options = {}) {
+            this.setOptions_(options);
         }
         /**
          * called when player.src gets called, handle a new source
@@ -60117,34 +64450,11 @@
                 audioMedia: audioPlaylistLoader && audioPlaylistLoader.media()
             });
             this.player_.tech_.on('keystatuschange', e => {
-                if (e.status !== 'output-restricted') {
-                    return;
-                }
-                const mainPlaylist = this.playlistController_.main();
-                if (!mainPlaylist || !mainPlaylist.playlists) {
-                    return;
-                }
-                const excludedHDPlaylists = []; // Assume all HD streams are unplayable and exclude them from ABR selection
-
-                mainPlaylist.playlists.forEach(playlist => {
-                    if (playlist && playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height >= 720) {
-                        if (!playlist.excludeUntil || playlist.excludeUntil < Infinity) {
-                            playlist.excludeUntil = Infinity;
-                            excludedHDPlaylists.push(playlist);
-                        }
-                    }
-                });
-                if (excludedHDPlaylists.length) {
-                    videojs.log.warn('DRM keystatus changed to "output-restricted." Removing the following HD playlists ' + 'that will most likely fail to play and clearing the buffer. ' + 'This may be due to HDCP restrictions on the stream and the capabilities of the current device.', ...excludedHDPlaylists); // Clear the buffer before switching playlists, since it may already contain unplayable segments
-
-                    this.playlistController_.fastQualityChange_();
-                }
+                this.playlistController_.updatePlaylistByKeyStatus(e.keyId, e.status);
             });
             this.handleWaitingForKey_ = this.handleWaitingForKey_.bind(this);
-            this.player_.tech_.on('waitingforkey', this.handleWaitingForKey_); // In IE11 this is too early to initialize media keys, and IE11 does not support
-            // promises.
-
-            if (videojs.browser.IE_VERSION === 11 || !didSetupEmeOptions) {
+            this.player_.tech_.on('waitingforkey', this.handleWaitingForKey_);
+            if (!didSetupEmeOptions) {
                 // If EME options were not set up, we've done all we could to initialize EME.
                 this.playlistController_.sourceUpdater_.initializedEme();
                 return;
@@ -60269,6 +64579,51 @@
                 callback
             });
         }
+        /**
+         * Adds the onRequest, onResponse, offRequest and offResponse functions
+         * to the VhsHandler xhr Object.
+         */
+
+        setupXhrHooks_() {
+            /**
+             * A player function for setting an onRequest hook
+             *
+             * @param {function} callback for request modifiction
+             */
+            this.xhr.onRequest = callback => {
+                addOnRequestHook(this.xhr, callback);
+            };
+            /**
+             * A player function for setting an onResponse hook
+             *
+             * @param {callback} callback for response data retrieval
+             */
+
+            this.xhr.onResponse = callback => {
+                addOnResponseHook(this.xhr, callback);
+            };
+            /**
+             * Deletes a player onRequest callback if it exists
+             *
+             * @param {function} callback to delete from the player set
+             */
+
+            this.xhr.offRequest = callback => {
+                removeOnRequestHook(this.xhr, callback);
+            };
+            /**
+             * Deletes a player onResponse callback if it exists
+             *
+             * @param {function} callback to delete from the player set
+             */
+
+            this.xhr.offResponse = callback => {
+                removeOnResponseHook(this.xhr, callback);
+            }; // Trigger an event on the player to notify the user that vhs is ready to set xhr hooks.
+            // This allows hooks to be set before the source is set to vhs when handleSource is called.
+
+            this.player_.trigger('xhr-hooks-ready');
+        }
     }
     /**
      * The Source Handler object, which informs video.js what additional
@@ -60289,6 +64644,7 @@
             const localOptions = merge(videojs.options, options);
             tech.vhs = new VhsHandler(source, tech, localOptions);
             tech.vhs.xhr = xhrFactory();
+            tech.vhs.setupXhrHooks_();
             tech.vhs.src(source.src, source.type);
             return tech.vhs;
         },
diff --git a/media/player/videojs/readme_moodle.txt b/media/player/videojs/readme_moodle.txt
index da85cc545f91..87249ca49b66 100644
--- a/media/player/videojs/readme_moodle.txt
+++ b/media/player/videojs/readme_moodle.txt
@@ -1,4 +1,4 @@
-VideoJS 8.3.0
+VideoJS 8.10.0
 --------------
 https://github.com/videojs/video.js
 
@@ -16,7 +16,7 @@ Instructions to import VideoJS player into Moodle:
 6. copy 'lang/' into 'videojs/' subfolder (so the result will be media/player/videojs/videojs/lang).
 
 Import plugins:
-YouTube Playback Technology for VideoJS 3.0.0
+YouTube Playback Technology for VideoJS 3.0.1
 ---------------------------------------------
 https://github.com/videojs/videojs-youtube
 
diff --git a/media/player/videojs/styles.css b/media/player/videojs/styles.css
index e24ae483ec69..5656d2659f1f 100644
--- a/media/player/videojs/styles.css
+++ b/media/player/videojs/styles.css
@@ -1,5 +1,21 @@
 /* stylelint-disable */
-@charset "UTF-8";
+.vjs-svg-icon {
+  display: inline-block;
+  background-repeat: no-repeat;
+  background-position: center;
+  fill: currentColor;
+  height: 1.8em;
+  width: 1.8em;
+}
+.vjs-svg-icon:before {
+  content: none !important;
+}
+
+.vjs-svg-icon:hover,
+.vjs-control:focus .vjs-svg-icon {
+  filter: drop-shadow(0 0 0.25em #fff);
+}
+
 .vjs-modal-dialog .vjs-modal-dialog-content, .video-js .vjs-modal-dialog, .vjs-button > .vjs-icon-placeholder:before, .video-js .vjs-big-play-button .vjs-icon-placeholder:before {
   position: absolute;
   top: 0;
@@ -559,6 +575,7 @@ body.vjs-pip-window .video-js {
   width: 100% !important;
   height: 100% !important;
   padding-top: 0 !important;
+  display: block;
 }
 
 .video-js.vjs-fullscreen.vjs-user-inactive {
@@ -642,6 +659,16 @@ body.vjs-pip-window .video-js {
   border-radius: 0.3em;
   transition: all 0.4s;
 }
+.vjs-big-play-button .vjs-svg-icon {
+  width: 1em;
+  height: 1em;
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  line-height: 1;
+  transform: translate(-50%, -50%);
+}
+
 .video-js:hover .vjs-big-play-button,
 .video-js .vjs-big-play-button:focus {
   border-color: #fff;
@@ -657,7 +684,7 @@ body.vjs-pip-window .video-js {
   display: none;
 }
 
-.vjs-has-started.vjs-paused.vjs-show-big-play-button-on-pause .vjs-big-play-button {
+.vjs-has-started.vjs-paused.vjs-show-big-play-button-on-pause:not(.vjs-seeking, .vjs-scrubbing, .vjs-error) .vjs-big-play-button {
   display: block;
 }
 
@@ -735,6 +762,8 @@ body.vjs-pip-window .video-js {
 }
 
 .vjs-menu li {
+  display: flex;
+  justify-content: center;
   list-style: none;
   margin: 0;
   padding: 0.2em 0;
@@ -758,6 +787,12 @@ body.vjs-pip-window .video-js {
   background-color: #fff;
   color: #2B333F;
 }
+.vjs-menu li.vjs-selected .vjs-svg-icon,
+.vjs-menu li.vjs-selected:focus .vjs-svg-icon,
+.vjs-menu li.vjs-selected:hover .vjs-svg-icon,
+.js-focus-visible .vjs-menu li.vjs-selected:hover .vjs-svg-icon {
+  fill: #000000;
+}
 
 .video-js .vjs-menu *:not(.vjs-selected):focus:not(:focus-visible),
 .js-focus-visible .vjs-menu *:not(.vjs-selected):focus:not(.focus-visible) {
@@ -877,6 +912,10 @@ body.vjs-pip-window .video-js {
   background-color: rgba(43, 51, 63, 0.7);
 }
 
+.video-js:not(.vjs-controls-disabled, .vjs-using-native-controls, .vjs-error) .vjs-control-bar.vjs-lock-showing {
+  display: flex !important;
+}
+
 .vjs-has-started .vjs-control-bar,
 .vjs-audio-only-mode .vjs-control-bar {
   display: flex;
@@ -930,6 +969,10 @@ body.vjs-pip-window .video-js {
   display: block;
 }
 
+.vjs-button > .vjs-svg-icon {
+  display: inline-block;
+}
+
 .video-js .vjs-control:focus:before,
 .video-js .vjs-control:hover:before,
 .video-js .vjs-control:focus {
@@ -1012,6 +1055,21 @@ body.vjs-pip-window .video-js {
   z-index: 1;
 }
 
+.vjs-svg-icons-enabled .vjs-play-progress:before {
+  content: none !important;
+}
+
+.vjs-play-progress .vjs-svg-icon {
+  position: absolute;
+  top: -0.35em;
+  right: -0.4em;
+  width: 0.9em;
+  height: 0.9em;
+  pointer-events: none;
+  line-height: 0.15em;
+  z-index: 1;
+}
+
 .video-js .vjs-load-progress {
   background: rgba(115, 133, 159, 0.5);
 }
@@ -1083,13 +1141,10 @@ body.vjs-pip-window .video-js {
   margin: 0 0.45em 0 0.45em;
   /* iOS Safari */
   -webkit-touch-callout: none;
-  /* Safari */
+  /* Safari, and Chrome 53 */
   -webkit-user-select: none;
-  /* Konqueror HTML */
-  /* Firefox */
-  -moz-user-select: none;
-  /* Internet Explorer/Edge */
   /* Non-prefixed version, currently supported by Chrome and Opera */
+  -moz-user-select: none;
   user-select: none;
   background-color: #73859f;
   background-color: rgba(115, 133, 159, 0.5);
@@ -1203,6 +1258,18 @@ body.vjs-pip-window .video-js {
   z-index: 1;
 }
 
+.vjs-svg-icons-enabled .vjs-volume-level:before {
+  content: none;
+}
+
+.vjs-volume-level .vjs-svg-icon {
+  position: absolute;
+  width: 0.9em;
+  height: 0.9em;
+  pointer-events: none;
+  z-index: 1;
+}
+
 .vjs-slider-horizontal .vjs-volume-level {
   height: 0.3em;
 }
@@ -1211,6 +1278,16 @@ body.vjs-pip-window .video-js {
   right: -0.5em;
 }
 
+.vjs-slider-horizontal .vjs-volume-level .vjs-svg-icon {
+  right: -0.3em;
+  transform: translateY(-50%);
+}
+
+.vjs-slider-vertical .vjs-volume-level .vjs-svg-icon {
+  top: -0.55em;
+  transform: translateX(-50%);
+}
+
 .video-js .vjs-volume-panel.vjs-volume-panel-vertical {
   width: 4em;
 }
@@ -1371,10 +1448,25 @@ body.vjs-pip-window .video-js {
   color: #888;
 }
 
+.vjs-svg-icons-enabled .vjs-seek-to-live-control {
+  line-height: 0;
+}
+
+.vjs-seek-to-live-control .vjs-svg-icon {
+  width: 1em;
+  height: 1em;
+  pointer-events: none;
+  fill: #888888;
+}
+
 .vjs-seek-to-live-control.vjs-control.vjs-at-live-edge .vjs-icon-placeholder {
   color: red;
 }
 
+.vjs-seek-to-live-control.vjs-control.vjs-at-live-edge .vjs-svg-icon {
+  fill: red;
+}
+
 .video-js .vjs-time-control {
   flex: none;
   font-size: 1em;
@@ -1414,6 +1506,10 @@ body.vjs-pip-window .video-js {
   pointer-events: none;
 }
 
+.vjs-error .vjs-text-track-display {
+  display: none;
+}
+
 .video-js.vjs-controls-disabled .vjs-text-track-display,
 .video-js.vjs-user-inactive.vjs-playing .vjs-text-track-display {
   bottom: 1em;
@@ -1490,50 +1586,39 @@ video::-webkit-media-text-track-display {
   text-align: center;
 }
 
-.vjs-error .vjs-error-display:before {
-  color: #fff;
-  content: "X";
-  font-family: Arial, Helvetica, sans-serif;
-  font-size: 4em;
-  left: 0;
-  line-height: 1;
-  margin-top: -0.5em;
-  position: absolute;
-  text-shadow: 0.05em 0.05em 0.1em #000;
-  text-align: center;
-  top: 50%;
-  vertical-align: middle;
-  width: 100%;
-}
-
 .vjs-loading-spinner {
   display: none;
   position: absolute;
   top: 50%;
   left: 50%;
-  margin: -25px 0 0 -25px;
+  transform: translate(-50%, -50%);
   opacity: 0.85;
   text-align: left;
-  border: 6px solid rgba(43, 51, 63, 0.7);
+  border: 0.6em solid rgba(43, 51, 63, 0.7);
   box-sizing: border-box;
   background-clip: padding-box;
-  width: 50px;
-  height: 50px;
-  border-radius: 25px;
+  width: 5em;
+  height: 5em;
+  border-radius: 50%;
   visibility: hidden;
 }
 
 .vjs-seeking .vjs-loading-spinner,
 .vjs-waiting .vjs-loading-spinner {
-  display: block;
+  display: flex;
+  justify-content: center;
+  align-items: center;
   animation: vjs-spinner-show 0s linear 0.3s forwards;
 }
 
+.vjs-error .vjs-loading-spinner {
+  display: none;
+}
+
 .vjs-loading-spinner:before,
 .vjs-loading-spinner:after {
   content: "";
   position: absolute;
-  margin: -6px;
   box-sizing: inherit;
   width: inherit;
   height: inherit;
@@ -1601,6 +1686,11 @@ video::-webkit-media-text-track-display {
   display: none;
 }
 
+.vjs-subs-caps-button + .vjs-menu .vjs-captions-menu-item .vjs-svg-icon {
+  width: 1.5em;
+  height: 1.5em;
+}
+
 .video-js .vjs-subs-caps-button + .vjs-menu .vjs-captions-menu-item .vjs-menu-item-text .vjs-icon-placeholder {
   vertical-align: middle;
   display: inline-block;
@@ -1618,12 +1708,14 @@ video::-webkit-media-text-track-display {
   display: none;
 }
 
+.video-js .vjs-audio-button + .vjs-menu .vjs-description-menu-item .vjs-menu-item-text .vjs-icon-placeholder,
 .video-js .vjs-audio-button + .vjs-menu .vjs-main-desc-menu-item .vjs-menu-item-text .vjs-icon-placeholder {
   vertical-align: middle;
   display: inline-block;
   margin-bottom: -0.1em;
 }
 
+.video-js .vjs-audio-button + .vjs-menu .vjs-description-menu-item .vjs-menu-item-text .vjs-icon-placeholder:before,
 .video-js .vjs-audio-button + .vjs-menu .vjs-main-desc-menu-item .vjs-menu-item-text .vjs-icon-placeholder:before {
   font-family: VideoJS;
   content: " \f12e";
@@ -1668,6 +1760,10 @@ video::-webkit-media-text-track-display {
   height: 70%;
 }
 
+.vjs-error .vjs-text-track-settings {
+  display: none;
+}
+
 .vjs-text-track-settings .vjs-modal-dialog-content {
   display: table;
 }
@@ -1702,6 +1798,10 @@ video::-webkit-media-text-track-display {
     grid-template-columns: 1fr;
   }
 }
+.vjs-text-track-settings select {
+  font-size: inherit;
+}
+
 .vjs-track-setting > select {
   margin-right: 1em;
   margin-bottom: 0.5em;
@@ -1714,7 +1814,7 @@ video::-webkit-media-text-track-display {
 
 .vjs-text-track-settings fieldset span {
   display: inline-block;
-  padding: 0 6px 8px;
+  padding: 0 0.6em 0.8em;
 }
 
 .vjs-text-track-settings fieldset span > select {
@@ -1724,17 +1824,11 @@ video::-webkit-media-text-track-display {
 .vjs-text-track-settings legend {
   color: #fff;
   font-weight: bold;
-  font-size: 14px;
+  font-size: 1.2em;
 }
 
 .vjs-text-track-settings .vjs-label {
-  clip: rect(1px 1px 1px 1px);
-  clip: rect(1px, 1px, 1px, 1px);
-  margin: 0 5px 5px 0;
-  border: 0;
-  height: 1px;
-  width: 1px;
-  overflow: hidden;
+  margin: 0 0.5em 0.5em 0;
 }
 
 .vjs-track-settings-controls button:focus,
@@ -1773,6 +1867,10 @@ video::-webkit-media-text-track-display {
   width: 100%;
 }
 
+.vjs-error .vjs-title-bar {
+  display: none;
+}
+
 .vjs-title-bar-title,
 .vjs-title-bar-description {
   margin: 0;
diff --git a/media/player/videojs/thirdpartylibs.xml b/media/player/videojs/thirdpartylibs.xml
index bc3f7ba105c6..283580b51bd8 100644
--- a/media/player/videojs/thirdpartylibs.xml
+++ b/media/player/videojs/thirdpartylibs.xml
@@ -4,7 +4,7 @@
         <location>amd/src/video-lazy.js</location>
         <name>VideoJS</name>
         <description>JavaScript library that makes it easier to work with and build on HTML5 video.</description>
-        <version>8.3.0</version>
+        <version>8.10.0</version>
         <license>Apache</license>
         <licenseversion>2.0</licenseversion>
         <repository>https://github.com/videojs/video.js</repository>
@@ -17,7 +17,7 @@
         <location>amd/src/Youtube-lazy.js</location>
         <name>videojs-youtube</name>
         <description>YouTube Playback Technology for Video.js.</description>
-        <version>3.0.0</version>
+        <version>3.0.1</version>
         <license>MIT</license>
         <repository>https://github.com/videojs/videojs-youtube</repository>
         <copyrights>
@@ -28,7 +28,7 @@
         <location>videojs</location>
         <name>VideoJS support files</name>
         <description>JavaScript library that makes it easier to work with and build on HTML5 video</description>
-        <version>8.3.0</version>
+        <version>8.10.0</version>
         <license>Apache</license>
         <licenseversion>2.0</licenseversion>
         <repository>https://github.com/videojs/video.js</repository>
diff --git a/media/player/videojs/videojs/lang/ar.js b/media/player/videojs/videojs/lang/ar.js
index b3481c4b9599..603618642f03 100644
--- a/media/player/videojs/videojs/lang/ar.js
+++ b/media/player/videojs/videojs/lang/ar.js
@@ -68,7 +68,7 @@ videojs.addLanguage('ar', {
   "Raised": "بارز",
   "Depressed": "منخفض",
   "Uniform": "منتظم",
-  "Dropshadow": "ظل خلفي",
+  "Drop shadow": "ظل خلفي",
   "Font Family": "عائلة الخطوط",
   "Proportional Sans-Serif": "Proportional Sans-Serif",
   "Monospace Sans-Serif": "Monospace Sans-Serif",
diff --git a/media/player/videojs/videojs/lang/ar.json b/media/player/videojs/videojs/lang/ar.json
index 21719af8d6ad..0a7c7104e2e5 100644
--- a/media/player/videojs/videojs/lang/ar.json
+++ b/media/player/videojs/videojs/lang/ar.json
@@ -68,7 +68,7 @@
   "Raised": "بارز",
   "Depressed": "منخفض",
   "Uniform": "منتظم",
-  "Dropshadow": "ظل خلفي",
+  "Drop shadow": "ظل خلفي",
   "Font Family": "عائلة الخطوط",
   "Proportional Sans-Serif": "Proportional Sans-Serif",
   "Monospace Sans-Serif": "Monospace Sans-Serif",
diff --git a/media/player/videojs/videojs/lang/az.js b/media/player/videojs/videojs/lang/az.js
new file mode 100644
index 000000000000..74b19115fc76
--- /dev/null
+++ b/media/player/videojs/videojs/lang/az.js
@@ -0,0 +1,97 @@
+videojs.addLanguage('az', {
+  "Audio Player": "Audiopleyer",
+  "Video Player": "Videopleyer",
+  "Play": "Oynat",
+  "Pause": "Pauza",
+  "Replay": "Yenidən oynat",
+  "Current Time": "Cari Vaxt",
+  "Duration": "Müddət",
+  "Remaining Time": "Qalan vaxt",
+  "Stream Type": "Yayım növü",
+  "LIVE": "CANLI",
+  "Seek to live, currently behind live": "Canlı yayım axtarışı, hal-hazırda canlı yayımdan geridədir",
+  "Seek to live, currently playing live": "Canlı yayım axtarışı, hal-hazırda canlı yayım göstərilir",
+  "Loaded": "Yükləndi",
+  "Progress": "Yüklənmə",
+  "Progress Bar": "Yüklənmə göstəricisi",
+  "progress bar timing: currentTime={1} duration={2}": "{1} / {2}",
+  "Fullscreen": "Tam ekran",
+  "Exit Fullscreen": "Tam ekrandan çıx",
+  "Mute": "Səssizi qoş",
+  "Unmute": "Səssizi söndür",
+  "Playback Rate": "Oynatma sürəti",
+  "Subtitles": "Alt yazılar",
+  "subtitles off": "Alt yazıları söndür",
+  "Captions": "Başlıqlar",
+  "captions off": "Başlıqları söndür",
+  "Chapters": "Fəsillər",
+  "Descriptions": "Təsvirlər",
+  "descriptions off": "Təsvirləri söndür",
+  "Audio Track": "Audio Trek",
+  "Volume Level": "Səs Səviyyəsi",
+  "You aborted the media playback": "Siz medianın oxudulmasını dayandırdınız",
+  "A network error caused the media download to fail part-way.": "Şəbəkə xətası səbəbindən medianın endirilməsi yarıda qaldı.",
+  "The media could not be loaded, either because the server or network failed or because the format is not supported.": "Yükləmə xətası.",
+  "The media playback was aborted due to a corruption problem or because the media used features your browser did not support.": "Media faylının korlanması səbəbilə və ya media faylın brauzerinizin dəstəkləmədiyi funksiyalardan istifadə etdiyinə görə medianın oxudulması dayandırılıb.",
+  "No compatible source was found for this media.": "Bu media üçün uyğun mənbə tapılmadı.",
+  "The media is encrypted and we do not have the keys to decrypt it.": "Media faylı şifrələnib və onun şifrəsini açmaq üçün açarlar yoxdur.",
+  "Play Video": "Videonu oynat",
+  "Close": "Bağla",
+  "Close Modal Dialog": "Modal dialoqunu bağla",
+  "Modal Window": "Modal pəncərəsi",
+  "This is a modal window": "Bu modal pəncərəsidir",
+  "This modal can be closed by pressing the Escape key or activating the close button.": "Bu modal Escape düyməsini basmaqla və ya bağlama düyməsini sıxmaqla bağlana bilər.",
+  ", opens captions settings dialog": ", başlıq parametrləri dialoqunu açır",
+  ", opens subtitles settings dialog": ", altyazı parametrləri dialoqunu açır",
+  ", opens descriptions settings dialog": ", təsvir parametrləri dialoqunu açır",
+  ", selected": ", seçilmiş",
+  "captions settings": "başlıq parametrləri",
+  "subtitles settings": "altyazı parametrləri",
+  "descriptions settings": "təsvir parametrləri",
+  "Text": "Tekst",
+  "White": "Ağ",
+  "Black": "Qara",
+  "Red": "Qırmızı",
+  "Green": "Yaşıl",
+  "Blue": "Göy",
+  "Yellow": "Sarı",
+  "Magenta": "Bənövşəyi",
+  "Cyan": "Mavi",
+  "Background": "Fon",
+  "Window": "Pəncərə",
+  "Transparent": "Şəffaf",
+  "Semi-Transparent": "Yarım-Şəffaf",
+  "Opaque": "Qeyri-şəffaf",
+  "Font Size": "Şrift Ölçüsü",
+  "Text Edge Style": "Mətnin kənarlarının üslubu",
+  "None": "Heç biri",
+  "Raised": "Artırılmış",
+  "Depressed": "Azaldılmış",
+  "Uniform": "Ümumiləşdirilmiş",
+  "Drop shadow": "Arxa kölgə",
+  "Font Family": "Şrift Ailəsi",
+  "Proportional Sans-Serif": "Proporsional Sans-Serif",
+  "Monospace Sans-Serif": "Birenli Sans-Serif",
+  "Proportional Serif": "Proporsional Serif",
+  "Monospace Serif": "Birenli Serif",
+  "Casual": "Gündəlik",
+  "Script": "Skript",
+  "Small Caps": "Kiçik böyük hərflər",
+  "Reset": "Sıfırla",
+  "restore all settings to the default values": "bütün parametrləri susmaya görə bərpa edin",
+  "Done": "Bitdi",
+  "Caption Settings Dialog": "Başlıq Parametrləri Dialoqu",
+  "Beginning of dialog window. Escape will cancel and close the window.": "Dialoq pəncərəsinin başlanğıcı. Escape düyməsi ləğv edəcək və pəncərəni bağlayacaq.",
+  "End of dialog window.": "Dialoq pəncərəsinin sonu.",
+  "{1} is loading.": "{1} yüklənir.",
+  "Exit Picture-in-Picture": "Şəkil içində şəkil rejimindən çıxın",
+  "Picture-in-Picture": "Şəkil içində şəkil rejimi",
+  "No content": "Məzmun yoxdur",
+  "Color": "Rəng",
+  "Opacity": "Qeyri-şəffaflıq",
+  "Text Background": "Tekst Fonu",
+  "Caption Area Background": "Başlıq Sahəsinin Fonu",
+  "Playing in Picture-in-Picture": "Şəkil içində şəkil rejimində oynayır",
+  "Skip backward {1} seconds": "{1} saniyə geriyə keçin",
+  "Skip forward {1} seconds": "{1} saniyə qabağa keçin"
+});
\ No newline at end of file
diff --git a/media/player/videojs/videojs/lang/az.json b/media/player/videojs/videojs/lang/az.json
new file mode 100644
index 000000000000..37e4a982f1fa
--- /dev/null
+++ b/media/player/videojs/videojs/lang/az.json
@@ -0,0 +1,97 @@
+{
+    "Audio Player": "Audiopleyer",
+    "Video Player": "Videopleyer",
+    "Play": "Oynat",
+    "Pause": "Pauza",
+    "Replay": "Yenidən oynat",
+    "Current Time": "Cari Vaxt",
+    "Duration": "Müddət",
+    "Remaining Time": "Qalan vaxt",
+    "Stream Type": "Yayım növü",
+    "LIVE": "CANLI",
+    "Seek to live, currently behind live": "Canlı yayım axtarışı, hal-hazırda canlı yayımdan geridədir",
+    "Seek to live, currently playing live": "Canlı yayım axtarışı, hal-hazırda canlı yayım göstərilir",
+    "Loaded": "Yükləndi",
+    "Progress": "Yüklənmə",
+    "Progress Bar": "Yüklənmə göstəricisi",
+    "progress bar timing: currentTime={1} duration={2}": "{1} / {2}",
+    "Fullscreen": "Tam ekran",
+    "Exit Fullscreen": "Tam ekrandan çıx",
+    "Mute": "Səssizi qoş",
+    "Unmute": "Səssizi söndür",
+    "Playback Rate": "Oynatma sürəti",
+    "Subtitles": "Alt yazılar",
+    "subtitles off": "Alt yazıları söndür",
+    "Captions": "Başlıqlar",
+    "captions off": "Başlıqları söndür",
+    "Chapters": "Fəsillər",
+    "Descriptions": "Təsvirlər",
+    "descriptions off": "Təsvirləri söndür",
+    "Audio Track": "Audio Trek",
+    "Volume Level": "Səs Səviyyəsi",
+    "You aborted the media playback": "Siz medianın oxudulmasını dayandırdınız",
+    "A network error caused the media download to fail part-way.": "Şəbəkə xətası səbəbindən medianın endirilməsi yarıda qaldı.",
+    "The media could not be loaded, either because the server or network failed or because the format is not supported.": "Yükləmə xətası.",
+    "The media playback was aborted due to a corruption problem or because the media used features your browser did not support.": "Media faylının korlanması səbəbilə və ya media faylın brauzerinizin dəstəkləmədiyi funksiyalardan istifadə etdiyinə görə medianın oxudulması dayandırılıb.",
+    "No compatible source was found for this media.": "Bu media üçün uyğun mənbə tapılmadı.",
+    "The media is encrypted and we do not have the keys to decrypt it.": "Media faylı şifrələnib və onun şifrəsini açmaq üçün açarlar yoxdur.",
+    "Play Video": "Videonu oynat",
+    "Close": "Bağla",
+    "Close Modal Dialog": "Modal dialoqunu bağla",
+    "Modal Window": "Modal pəncərəsi",
+    "This is a modal window": "Bu modal pəncərəsidir",
+    "This modal can be closed by pressing the Escape key or activating the close button.": "Bu modal Escape düyməsini basmaqla və ya bağlama düyməsini sıxmaqla bağlana bilər.",
+    ", opens captions settings dialog": ", başlıq parametrləri dialoqunu açır",
+    ", opens subtitles settings dialog": ", altyazı parametrləri dialoqunu açır",
+    ", opens descriptions settings dialog": ", təsvir parametrləri dialoqunu açır",
+    ", selected": ", seçilmiş",
+    "captions settings": "başlıq parametrləri",
+    "subtitles settings": "altyazı parametrləri",
+    "descriptions settings": "təsvir parametrləri",
+    "Text": "Tekst",
+    "White": "Ağ",
+    "Black": "Qara",
+    "Red": "Qırmızı",
+    "Green": "Yaşıl",
+    "Blue": "Göy",
+    "Yellow": "Sarı",
+    "Magenta": "Bənövşəyi",
+    "Cyan": "Mavi",
+    "Background": "Fon",
+    "Window": "Pəncərə",
+    "Transparent": "Şəffaf",
+    "Semi-Transparent": "Yarım-Şəffaf",
+    "Opaque": "Qeyri-şəffaf",
+    "Font Size": "Şrift Ölçüsü",
+    "Text Edge Style": "Mətnin kənarlarının üslubu",
+    "None": "Heç biri",
+    "Raised": "Artırılmış",
+    "Depressed": "Azaldılmış",
+    "Uniform": "Ümumiləşdirilmiş",
+    "Drop shadow": "Arxa kölgə",
+    "Font Family": "Şrift Ailəsi",
+    "Proportional Sans-Serif": "Proporsional Sans-Serif",
+    "Monospace Sans-Serif": "Birenli Sans-Serif",
+    "Proportional Serif": "Proporsional Serif",
+    "Monospace Serif": "Birenli Serif",
+    "Casual": "Gündəlik",
+    "Script": "Skript",
+    "Small Caps": "Kiçik böyük hərflər",
+    "Reset": "Sıfırla",
+    "restore all settings to the default values": "bütün parametrləri susmaya görə bərpa edin",
+    "Done": "Bitdi",
+    "Caption Settings Dialog": "Başlıq Parametrləri Dialoqu",
+    "Beginning of dialog window. Escape will cancel and close the window.": "Dialoq pəncərəsinin başlanğıcı. Escape düyməsi ləğv edəcək və pəncərəni bağlayacaq.",
+    "End of dialog window.": "Dialoq pəncərəsinin sonu.",
+    "{1} is loading.": "{1} yüklənir.",
+    "Exit Picture-in-Picture": "Şəkil içində şəkil rejimindən çıxın",
+    "Picture-in-Picture": "Şəkil içində şəkil rejimi",
+    "No content": "Məzmun yoxdur",
+    "Color": "Rəng",
+    "Opacity": "Qeyri-şəffaflıq",
+    "Text Background": "Tekst Fonu",
+    "Caption Area Background": "Başlıq Sahəsinin Fonu",
+    "Playing in Picture-in-Picture": "Şəkil içində şəkil rejimində oynayır",
+    "Skip backward {1} seconds": "{1} saniyə geriyə keçin",
+    "Skip forward {1} seconds": "{1} saniyə qabağa keçin"
+  }
\ No newline at end of file
diff --git a/media/player/videojs/videojs/lang/bn.js b/media/player/videojs/videojs/lang/bn.js
index 24f1d91c15fe..c715bfa0c4db 100644
--- a/media/player/videojs/videojs/lang/bn.js
+++ b/media/player/videojs/videojs/lang/bn.js
@@ -68,7 +68,7 @@ videojs.addLanguage('bn', {
   "Raised": "বাড়ানো হয়েছে",
   "Depressed": "নামানো হয়েছে",
   "Uniform": "ইউনিফর্ম",
-  "Dropshadow": "ড্রপশ্যাডো",
+  "Drop shadow": "ড্রপশ্যাডো",
   "Font Family": "অক্ষরের পরিবার",
   "Proportional Sans-Serif": "সমানুপাতিক সানস-সেরিফ",
   "Monospace Sans-Serif": "মনোস্পেস সানস-সেরিফ",
diff --git a/media/player/videojs/videojs/lang/bn.json b/media/player/videojs/videojs/lang/bn.json
index ee43b92ed567..0164c9dfdfd6 100644
--- a/media/player/videojs/videojs/lang/bn.json
+++ b/media/player/videojs/videojs/lang/bn.json
@@ -68,7 +68,7 @@
     "Raised": "বাড়ানো হয়েছে",
     "Depressed": "নামানো হয়েছে",
     "Uniform": "ইউনিফর্ম",
-    "Dropshadow": "ড্রপশ্যাডো",
+    "Drop shadow": "ড্রপশ্যাডো",
     "Font Family": "অক্ষরের পরিবার",
     "Proportional Sans-Serif": "সমানুপাতিক সানস-সেরিফ",
     "Monospace Sans-Serif": "মনোস্পেস সানস-সেরিফ",
diff --git a/media/player/videojs/videojs/lang/ca.js b/media/player/videojs/videojs/lang/ca.js
index 0d2fee84ab7d..8b0764559bd7 100644
--- a/media/player/videojs/videojs/lang/ca.js
+++ b/media/player/videojs/videojs/lang/ca.js
@@ -1,26 +1,97 @@
 videojs.addLanguage('ca', {
-  "Play": "Reproducció",
+  "Audio Player": "Reproductor d'àudio",
+  "Video Player": "Reproductor de vídeo",
+  "Play": "Reproduir",
   "Pause": "Pausa",
-  "Current Time": "Temps reproduït",
-  "Duration": "Durada total",
+  "Replay": "Repetir",
+  "Current Time": "Temps actual",
+  "Duration": "Durada",
   "Remaining Time": "Temps restant",
-  "Stream Type": "Tipus de seqüència",
+  "Stream Type": "Tipus d'emissió",
   "LIVE": "EN DIRECTE",
+  "Seek to live, currently behind live": "Anar en directe, actualment darrere de la retransmissió en directe",
+  "Seek to live, currently playing live": "Anar en directe, actualment en directe",
   "Loaded": "Carregat",
   "Progress": "Progrés",
+  "Progress Bar": "Barra de progrés",
+  "progress bar timing: currentTime={1} duration={2}": "{1} de {2}",
   "Fullscreen": "Pantalla completa",
-  "Exit Fullscreen": "Pantalla no completa",
-  "Mute": "Silencia",
-  "Unmute": "Amb so",
+  "Exit Fullscreen": "Sortir de pantalla completa",
+  "Mute": "Silenciar",
+  "Unmute": "Activar el so",
   "Playback Rate": "Velocitat de reproducció",
   "Subtitles": "Subtítols",
-  "subtitles off": "Subtítols desactivats",
+  "subtitles off": "Desactivar subtítols",
   "Captions": "Llegendes",
-  "captions off": "Llegendes desactivades",
+  "captions off": "Desactivar llegendes",
   "Chapters": "Capítols",
-  "You aborted the media playback": "Heu interromput la reproducció del vídeo.",
-  "A network error caused the media download to fail part-way.": "Un error de la xarxa ha interromput la baixada del vídeo.",
-  "The media could not be loaded, either because the server or network failed or because the format is not supported.": "No s'ha pogut carregar el vídeo perquè el servidor o la xarxa han fallat, o bé perquè el seu format no és compatible.",
-  "The media playback was aborted due to a corruption problem or because the media used features your browser did not support.": "La reproducció de vídeo s'ha interrumput per un problema de corrupció de dades o bé perquè el vídeo demanava funcions que el vostre navegador no ofereix.",
-  "No compatible source was found for this media.": "No s'ha trobat cap font compatible amb el vídeo."
+  "Descriptions": "Descripcions",
+  "descriptions off": "Desactivar descripcions",
+  "Audio Track": "Pista d'àudio",
+  "Volume Level": "Nivell de volum",
+  "You aborted the media playback": "Has interromput la reproducció del contingut",
+  "A network error caused the media download to fail part-way.": "Un error de xarxa ha interromput la descàrrega del contingut.",
+  "The media could not be loaded, either because the server or network failed or because the format is not supported.": "No s'ha pogut carregar el contingut, ja sigui perquè el servidor o la xarxa han fallat o perquè el format no està suportat.",
+  "The media playback was aborted due to a corruption problem or because the media used features your browser did not support.": "La reproducció del contingut s'ha interromput a causa d'un problema de corrupció o perquè el contingut fa servir funcions que el teu navegador no suporta.",
+  "No compatible source was found for this media.": "No s'ha trobat una font compatible per a aquest contingut.",
+  "The media is encrypted and we do not have the keys to decrypt it.": "El contingut està xifrat i no disposem de les claus per desxifrar-lo.",
+  "Play Video": "Reproduir vídeo",
+  "Close": "Tancar",
+  "Close Modal Dialog": "Tancar el diàleg modal",
+  "Modal Window": "Finestra modal",
+  "This is a modal window": "Aquesta és una finestra modal",
+  "This modal can be closed by pressing the Escape key or activating the close button.": "Aquesta finestra es pot tancar prement la tecla Escape o activant el botó de tancar.",
+  ", opens captions settings dialog": ", obre el diàleg de configuració de subtítols",
+  ", opens subtitles settings dialog": ", obre el diàleg de configuració de subtítols",
+  ", opens descriptions settings dialog": ", obre el diàleg de configuració de descripcions",
+  ", selected": ", seleccionat",
+  "captions settings": "configuració de subtítols",
+  "subtitles settings": "configuració de subtítols",
+  "descriptions settings": "configuració de descripcions",
+  "Text": "Text",
+  "White": "Blanc",
+  "Black": "Negre",
+  "Red": "Vermell",
+  "Green": "Verd",
+  "Blue": "Blau",
+  "Yellow": "Groc",
+  "Magenta": "Magenta",
+  "Cyan": "Cian",
+  "Background": "Fons",
+  "Window": "Finestra",
+  "Transparent": "Transparent",
+  "Semi-Transparent": "Semi-transparent",
+  "Opaque": "Opac",
+  "Font Size": "Mida de la lletra",
+  "Text Edge Style": "Estil de la vora del text",
+  "None": "Cap",
+  "Raised": "Rellevat",
+  "Depressed": "Premut",
+  "Uniform": "Uniforme",
+  "Drop shadow": "Ombra",
+  "Font Family": "Família tipogràfica",
+  "Proportional Sans-Serif": "Sense serif proporcional",
+  "Monospace Sans-Serif": "Monoespaiada sense serif",
+  "Proportional Serif": "Serif proporcional",
+  "Monospace Serif": "Monoespaiada amb serif",
+  "Casual": "Desenfadada",
+  "Script": "Script",
+  "Small Caps": "Minúscules",
+  "Reset": "Restablir",
+  "restore all settings to the default values": "restaurar totes les configuracions als valors predeterminats",
+  "Done": "Fet",
+  "Caption Settings Dialog": "Diàleg de configuració de subtítols",
+  "Beginning of dialog window. Escape will cancel and close the window.": "Inici del diàleg. L'Escape cancel·larà i tancarà la finestra.",
+  "End of dialog window.": "Fi del diàleg.",
+  "{1} is loading.": "S'està carregant {1}.",
+  "Exit Picture-in-Picture": "Sortir de la imatge en imatge",
+  "Picture-in-Picture": "Imatge en imatge",
+  "No content": "Sense contingut",
+  "Color": "Color",
+  "Opacity": "Opacitat",
+  "Text Background": "Fons del text",
+  "Caption Area Background": "Fons de l'àrea de subtítols",
+  "Playing in Picture-in-Picture": "Reproduint en imatge en imatge",
+  "Skip backward {1} seconds": "Salta enrere {1} segons",
+  "Skip forward {1} seconds": "Salta endavant {1} segons"
 });
\ No newline at end of file
diff --git a/media/player/videojs/videojs/lang/ca.json b/media/player/videojs/videojs/lang/ca.json
index 6e53eea1dfae..7a118e5dc3af 100644
--- a/media/player/videojs/videojs/lang/ca.json
+++ b/media/player/videojs/videojs/lang/ca.json
@@ -1,26 +1,97 @@
 {
-  "Play": "Reproducció",
+  "Audio Player": "Reproductor d'àudio",
+  "Video Player": "Reproductor de vídeo",
+  "Play": "Reproduir",
   "Pause": "Pausa",
-  "Current Time": "Temps reproduït",
-  "Duration": "Durada total",
+  "Replay": "Repetir",
+  "Current Time": "Temps actual",
+  "Duration": "Durada",
   "Remaining Time": "Temps restant",
-  "Stream Type": "Tipus de seqüència",
+  "Stream Type": "Tipus d'emissió",
   "LIVE": "EN DIRECTE",
+  "Seek to live, currently behind live": "Anar en directe, actualment darrere de la retransmissió en directe",
+  "Seek to live, currently playing live": "Anar en directe, actualment en directe",
   "Loaded": "Carregat",
   "Progress": "Progrés",
+  "Progress Bar": "Barra de progrés",
+  "progress bar timing: currentTime={1} duration={2}": "{1} de {2}",
   "Fullscreen": "Pantalla completa",
-  "Exit Fullscreen": "Pantalla no completa",
-  "Mute": "Silencia",
-  "Unmute": "Amb so",
+  "Exit Fullscreen": "Sortir de pantalla completa",
+  "Mute": "Silenciar",
+  "Unmute": "Activar el so",
   "Playback Rate": "Velocitat de reproducció",
   "Subtitles": "Subtítols",
-  "subtitles off": "Subtítols desactivats",
+  "subtitles off": "Desactivar subtítols",
   "Captions": "Llegendes",
-  "captions off": "Llegendes desactivades",
+  "captions off": "Desactivar llegendes",
   "Chapters": "Capítols",
-  "You aborted the media playback": "Heu interromput la reproducció del vídeo.",
-  "A network error caused the media download to fail part-way.": "Un error de la xarxa ha interromput la baixada del vídeo.",
-  "The media could not be loaded, either because the server or network failed or because the format is not supported.": "No s'ha pogut carregar el vídeo perquè el servidor o la xarxa han fallat, o bé perquè el seu format no és compatible.",
-  "The media playback was aborted due to a corruption problem or because the media used features your browser did not support.": "La reproducció de vídeo s'ha interrumput per un problema de corrupció de dades o bé perquè el vídeo demanava funcions que el vostre navegador no ofereix.",
-  "No compatible source was found for this media.": "No s'ha trobat cap font compatible amb el vídeo."
+  "Descriptions": "Descripcions",
+  "descriptions off": "Desactivar descripcions",
+  "Audio Track": "Pista d'àudio",
+  "Volume Level": "Nivell de volum",
+  "You aborted the media playback": "Has interromput la reproducció del contingut",
+  "A network error caused the media download to fail part-way.": "Un error de xarxa ha interromput la descàrrega del contingut.",
+  "The media could not be loaded, either because the server or network failed or because the format is not supported.": "No s'ha pogut carregar el contingut, ja sigui perquè el servidor o la xarxa han fallat o perquè el format no està suportat.",
+  "The media playback was aborted due to a corruption problem or because the media used features your browser did not support.": "La reproducció del contingut s'ha interromput a causa d'un problema de corrupció o perquè el contingut fa servir funcions que el teu navegador no suporta.",
+  "No compatible source was found for this media.": "No s'ha trobat una font compatible per a aquest contingut.",
+  "The media is encrypted and we do not have the keys to decrypt it.": "El contingut està xifrat i no disposem de les claus per desxifrar-lo.",
+  "Play Video": "Reproduir vídeo",
+  "Close": "Tancar",
+  "Close Modal Dialog": "Tancar el diàleg modal",
+  "Modal Window": "Finestra modal",
+  "This is a modal window": "Aquesta és una finestra modal",
+  "This modal can be closed by pressing the Escape key or activating the close button.": "Aquesta finestra es pot tancar prement la tecla Escape o activant el botó de tancar.",
+  ", opens captions settings dialog": ", obre el diàleg de configuració de subtítols",
+  ", opens subtitles settings dialog": ", obre el diàleg de configuració de subtítols",
+  ", opens descriptions settings dialog": ", obre el diàleg de configuració de descripcions",
+  ", selected": ", seleccionat",
+  "captions settings": "configuració de subtítols",
+  "subtitles settings": "configuració de subtítols",
+  "descriptions settings": "configuració de descripcions",
+  "Text": "Text",
+  "White": "Blanc",
+  "Black": "Negre",
+  "Red": "Vermell",
+  "Green": "Verd",
+  "Blue": "Blau",
+  "Yellow": "Groc",
+  "Magenta": "Magenta",
+  "Cyan": "Cian",
+  "Background": "Fons",
+  "Window": "Finestra",
+  "Transparent": "Transparent",
+  "Semi-Transparent": "Semi-transparent",
+  "Opaque": "Opac",
+  "Font Size": "Mida de la lletra",
+  "Text Edge Style": "Estil de la vora del text",
+  "None": "Cap",
+  "Raised": "Rellevat",
+  "Depressed": "Premut",
+  "Uniform": "Uniforme",
+  "Drop shadow": "Ombra",
+  "Font Family": "Família tipogràfica",
+  "Proportional Sans-Serif": "Sense serif proporcional",
+  "Monospace Sans-Serif": "Monoespaiada sense serif",
+  "Proportional Serif": "Serif proporcional",
+  "Monospace Serif": "Monoespaiada amb serif",
+  "Casual": "Desenfadada",
+  "Script": "Script",
+  "Small Caps": "Minúscules",
+  "Reset": "Restablir",
+  "restore all settings to the default values": "restaurar totes les configuracions als valors predeterminats",
+  "Done": "Fet",
+  "Caption Settings Dialog": "Diàleg de configuració de subtítols",
+  "Beginning of dialog window. Escape will cancel and close the window.": "Inici del diàleg. L'Escape cancel·larà i tancarà la finestra.",
+  "End of dialog window.": "Fi del diàleg.",
+  "{1} is loading.": "S'està carregant {1}.",
+  "Exit Picture-in-Picture": "Sortir de la imatge en imatge",
+  "Picture-in-Picture": "Imatge en imatge",
+  "No content": "Sense contingut",
+  "Color": "Color",
+  "Opacity": "Opacitat",
+  "Text Background": "Fons del text",
+  "Caption Area Background": "Fons de l'àrea de subtítols",
+  "Playing in Picture-in-Picture": "Reproduint en imatge en imatge",
+  "Skip backward {1} seconds": "Salta enrere {1} segons",
+  "Skip forward {1} seconds": "Salta endavant {1} segons"
 }
diff --git a/media/player/videojs/videojs/lang/cs.js b/media/player/videojs/videojs/lang/cs.js
index 396bbd5e789e..69b8571ea75b 100644
--- a/media/player/videojs/videojs/lang/cs.js
+++ b/media/player/videojs/videojs/lang/cs.js
@@ -66,7 +66,7 @@ videojs.addLanguage('cs', {
   "Raised": "Zvýšený",
   "Depressed": "Propadlý",
   "Uniform": "Rovnoměrný",
-  "Dropshadow": "Stínovaný",
+  "Drop shadow": "Stínovaný",
   "Font Family": "Rodina písma",
   "Proportional Sans-Serif": "Proporcionální bezpatkové",
   "Monospace Sans-Serif": "Monospace bezpatkové",
diff --git a/media/player/videojs/videojs/lang/cs.json b/media/player/videojs/videojs/lang/cs.json
index a14c3a05a869..be449a6f5732 100644
--- a/media/player/videojs/videojs/lang/cs.json
+++ b/media/player/videojs/videojs/lang/cs.json
@@ -66,7 +66,7 @@
   "Raised": "Zvýšený",
   "Depressed": "Propadlý",
   "Uniform": "Rovnoměrný",
-  "Dropshadow": "Stínovaný",
+  "Drop shadow": "Stínovaný",
   "Font Family": "Rodina písma",
   "Proportional Sans-Serif": "Proporcionální bezpatkové",
   "Monospace Sans-Serif": "Monospace bezpatkové",
diff --git a/media/player/videojs/videojs/lang/cy.js b/media/player/videojs/videojs/lang/cy.js
index e2bb33038c50..4d250fe5a823 100644
--- a/media/player/videojs/videojs/lang/cy.js
+++ b/media/player/videojs/videojs/lang/cy.js
@@ -66,7 +66,7 @@ videojs.addLanguage('cy', {
   "Raised": "Uwch",
   "Depressed": "Is",
   "Uniform": "Unffurf",
-  "Dropshadow": "Cysgod cefn",
+  "Drop shadow": "Cysgod cefn",
   "Font Family": "Teulu y Ffont",
   "Proportional Sans-Serif": "Heb-Seriff Cyfraneddol",
   "Monospace Sans-Serif": "Heb-Seriff Unlled",
diff --git a/media/player/videojs/videojs/lang/cy.json b/media/player/videojs/videojs/lang/cy.json
index 4b59086d1de9..9d3d9b7b56fa 100644
--- a/media/player/videojs/videojs/lang/cy.json
+++ b/media/player/videojs/videojs/lang/cy.json
@@ -66,7 +66,7 @@
   "Raised":"Uwch",
   "Depressed":"Is",
   "Uniform":"Unffurf",
-  "Dropshadow":"Cysgod cefn",
+  "Drop shadow":"Cysgod cefn",
   "Font Family":"Teulu y Ffont",
   "Proportional Sans-Serif":"Heb-Seriff Cyfraneddol",
   "Monospace Sans-Serif":"Heb-Seriff Unlled",
diff --git a/media/player/videojs/videojs/lang/de.js b/media/player/videojs/videojs/lang/de.js
index 71aabdfff1c1..3e809d18f763 100644
--- a/media/player/videojs/videojs/lang/de.js
+++ b/media/player/videojs/videojs/lang/de.js
@@ -61,7 +61,7 @@ videojs.addLanguage('de', {
   "Raised": "Erhoben",
   "Depressed": "Gedrückt",
   "Uniform": "Uniform",
-  "Dropshadow": "Schlagschatten",
+  "Drop shadow": "Schlagschatten",
   "Font Family": "Schriftfamilie",
   "Proportional Sans-Serif": "Proportionale Sans-Serif",
   "Monospace Sans-Serif": "Monospace Sans-Serif",
diff --git a/media/player/videojs/videojs/lang/de.json b/media/player/videojs/videojs/lang/de.json
index acd9124a5497..3c5cfd41bead 100644
--- a/media/player/videojs/videojs/lang/de.json
+++ b/media/player/videojs/videojs/lang/de.json
@@ -61,7 +61,7 @@
   "Raised": "Erhoben",
   "Depressed": "Gedrückt",
   "Uniform": "Uniform",
-  "Dropshadow": "Schlagschatten",
+  "Drop shadow": "Schlagschatten",
   "Font Family": "Schriftfamilie",
   "Proportional Sans-Serif": "Proportionale Sans-Serif",
   "Monospace Sans-Serif": "Monospace Sans-Serif",
diff --git a/media/player/videojs/videojs/lang/en.js b/media/player/videojs/videojs/lang/en.js
index a7b8b168ca05..c227dc9b4c6a 100644
--- a/media/player/videojs/videojs/lang/en.js
+++ b/media/player/videojs/videojs/lang/en.js
@@ -68,7 +68,7 @@ videojs.addLanguage('en', {
   "Raised": "Raised",
   "Depressed": "Depressed",
   "Uniform": "Uniform",
-  "Dropshadow": "Dropshadow",
+  "Drop shadow": "Drop shadow",
   "Font Family": "Font Family",
   "Proportional Sans-Serif": "Proportional Sans-Serif",
   "Monospace Sans-Serif": "Monospace Sans-Serif",
diff --git a/media/player/videojs/videojs/lang/en.json b/media/player/videojs/videojs/lang/en.json
index 2ab55b7c0c23..ba96366c027b 100644
--- a/media/player/videojs/videojs/lang/en.json
+++ b/media/player/videojs/videojs/lang/en.json
@@ -68,7 +68,7 @@
   "Raised": "Raised",
   "Depressed": "Depressed",
   "Uniform": "Uniform",
-  "Dropshadow": "Dropshadow",
+  "Drop shadow": "Drop shadow",
   "Font Family": "Font Family",
   "Proportional Sans-Serif": "Proportional Sans-Serif",
   "Monospace Sans-Serif": "Monospace Sans-Serif",
diff --git a/media/player/videojs/videojs/lang/es.js b/media/player/videojs/videojs/lang/es.js
index 1160cfc2929e..55a6b6d3d311 100644
--- a/media/player/videojs/videojs/lang/es.js
+++ b/media/player/videojs/videojs/lang/es.js
@@ -68,7 +68,7 @@ videojs.addLanguage('es', {
   "Raised": "En relieve",
   "Depressed": "Hundido",
   "Uniform": "Uniforme",
-  "Dropshadow": "Sombra paralela",
+  "Drop shadow": "Sombra paralela",
   "Font Family": "Familia de fuente",
   "Proportional Sans-Serif": "Sans-Serif proporcional",
   "Monospace Sans-Serif": "Sans-Serif monoespacio",
@@ -90,5 +90,7 @@ videojs.addLanguage('es', {
   "Color": "Color",
   "Opacity": "Opacidad",
   "Text Background": "Fondo del texto",
-  "Caption Area Background": "Fondo del área de subtítulos"
+  "Caption Area Background": "Fondo del área de subtítulos",
+  "Skip forward {1} seconds": "Avanza {1} segundos",
+  "Skip backward {1} seconds": "Retrocede {1} segundos"
 });
\ No newline at end of file
diff --git a/media/player/videojs/videojs/lang/es.json b/media/player/videojs/videojs/lang/es.json
index 96405bbbcd54..91d30ffcf8aa 100644
--- a/media/player/videojs/videojs/lang/es.json
+++ b/media/player/videojs/videojs/lang/es.json
@@ -68,7 +68,7 @@
   "Raised": "En relieve",
   "Depressed": "Hundido",
   "Uniform": "Uniforme",
-  "Dropshadow": "Sombra paralela",
+  "Drop shadow": "Sombra paralela",
   "Font Family": "Familia de fuente",
   "Proportional Sans-Serif": "Sans-Serif proporcional",
   "Monospace Sans-Serif": "Sans-Serif monoespacio",
@@ -90,5 +90,7 @@
   "Color": "Color",
   "Opacity": "Opacidad",
   "Text Background": "Fondo del texto",
-  "Caption Area Background": "Fondo del área de subtítulos"
+  "Caption Area Background": "Fondo del área de subtítulos",
+  "Skip forward {1} seconds": "Avanza {1} segundos",
+  "Skip backward {1} seconds": "Retrocede {1} segundos"
 }
diff --git a/media/player/videojs/videojs/lang/et.js b/media/player/videojs/videojs/lang/et.js
index e68fec841bf0..8ae720939971 100644
--- a/media/player/videojs/videojs/lang/et.js
+++ b/media/player/videojs/videojs/lang/et.js
@@ -68,7 +68,7 @@ videojs.addLanguage('et', {
   "Raised": "Kõrgem",
   "Depressed": "Madalam",
   "Uniform": "Ühtlane",
-  "Dropshadow": "Langeva varjuga",
+  "Drop shadow": "Langeva varjuga",
   "Font Family": "Fondipere",
   "Proportional Sans-Serif": "Seriifideta proportsionaalkiri",
   "Monospace Sans-Serif": "Seriifideta püsisammkiri",
diff --git a/media/player/videojs/videojs/lang/et.json b/media/player/videojs/videojs/lang/et.json
index 0b2d995780ab..1554589c2910 100644
--- a/media/player/videojs/videojs/lang/et.json
+++ b/media/player/videojs/videojs/lang/et.json
@@ -68,7 +68,7 @@
   "Raised": "Kõrgem",
   "Depressed": "Madalam",
   "Uniform": "Ühtlane",
-  "Dropshadow": "Langeva varjuga",
+  "Drop shadow": "Langeva varjuga",
   "Font Family": "Fondipere",
   "Proportional Sans-Serif": "Seriifideta proportsionaalkiri",
   "Monospace Sans-Serif": "Seriifideta püsisammkiri",
diff --git a/media/player/videojs/videojs/lang/eu.js b/media/player/videojs/videojs/lang/eu.js
index d94b868960f3..2f08b5c0ad3b 100644
--- a/media/player/videojs/videojs/lang/eu.js
+++ b/media/player/videojs/videojs/lang/eu.js
@@ -68,7 +68,7 @@ videojs.addLanguage('eu', {
   "Raised": "Jasoa",
   "Depressed": "Hondoratua",
   "Uniform": "Uniformea",
-  "Dropshadow": "Itzalduna",
+  "Drop shadow": "Itzalduna",
   "Font Family": "Letra-tipoa",
   "Proportional Sans-Serif": "Sans-Serif proportzionala",
   "Monospace Sans-Serif": "Tarte berdineko Sans-Serif",
diff --git a/media/player/videojs/videojs/lang/eu.json b/media/player/videojs/videojs/lang/eu.json
index 976549959d92..d9fc5d98b3b9 100644
--- a/media/player/videojs/videojs/lang/eu.json
+++ b/media/player/videojs/videojs/lang/eu.json
@@ -68,7 +68,7 @@
   "Raised": "Jasoa",
   "Depressed": "Hondoratua",
   "Uniform": "Uniformea",
-  "Dropshadow": "Itzalduna",
+  "Drop shadow": "Itzalduna",
   "Font Family": "Letra-tipoa",
   "Proportional Sans-Serif": "Sans-Serif proportzionala",
   "Monospace Sans-Serif": "Tarte berdineko Sans-Serif",
diff --git a/media/player/videojs/videojs/lang/fa.js b/media/player/videojs/videojs/lang/fa.js
index eba462816543..00225f96ac17 100644
--- a/media/player/videojs/videojs/lang/fa.js
+++ b/media/player/videojs/videojs/lang/fa.js
@@ -68,7 +68,7 @@ videojs.addLanguage('fa', {
   "Raised": "برجسته",
   "Depressed": "فرورفته",
   "Uniform": "یکنواخت",
-  "Dropshadow": "سایه‌دار",
+  "Drop shadow": "سایه‌دار",
   "Font Family": "نوع قلم",
   "Proportional Sans-Serif": "Sans-Serif متناسب",
   "Monospace Sans-Serif": "Sans-Serif هم‌عرض",
@@ -87,5 +87,11 @@ videojs.addLanguage('fa', {
   "Exit Picture-in-Picture": "خروج از حالت تصویر در تصویر",
   "Picture-in-Picture": "تصویر در تصویر",
   "Skip forward {1} seconds": "{1} ثانیه بعد",
-  "Skip backward {1} seconds": "{1} ثانیه قبل"
+  "Skip backward {1} seconds": "{1} ثانیه قبل",
+  "No content": "بدون محتوا",
+  "Color": "رنگ",
+  "Opacity": "شفافیت",
+  "Text Background": "رنگ پس زمینه",
+  "Caption Area Background": "رنگ پس زمینه عنوان",
+  "Playing in Picture-in-Picture": "پخش در حالت تصویر در تصویر"
 });
\ No newline at end of file
diff --git a/media/player/videojs/videojs/lang/fa.json b/media/player/videojs/videojs/lang/fa.json
index b3b26d67c134..b7f4d66ee42c 100644
--- a/media/player/videojs/videojs/lang/fa.json
+++ b/media/player/videojs/videojs/lang/fa.json
@@ -68,7 +68,7 @@
   "Raised": "برجسته",
   "Depressed": "فرورفته",
   "Uniform": "یکنواخت",
-  "Dropshadow": "سایه‌دار",
+  "Drop shadow": "سایه‌دار",
   "Font Family": "نوع قلم",
   "Proportional Sans-Serif": "Sans-Serif متناسب",
   "Monospace Sans-Serif": "Sans-Serif هم‌عرض",
@@ -87,5 +87,11 @@
   "Exit Picture-in-Picture": "خروج از حالت تصویر در تصویر",
   "Picture-in-Picture": "تصویر در تصویر",
   "Skip forward {1} seconds": "{1} ثانیه بعد",
-  "Skip backward {1} seconds": "{1} ثانیه قبل"
+  "Skip backward {1} seconds": "{1} ثانیه قبل",
+  "No content": "بدون محتوا",
+  "Color": "رنگ",
+  "Opacity": "شفافیت",
+  "Text Background": "رنگ پس زمینه",
+  "Caption Area Background": "رنگ پس زمینه عنوان",
+  "Playing in Picture-in-Picture": "پخش در حالت تصویر در تصویر"
 }
diff --git a/media/player/videojs/videojs/lang/fr.js b/media/player/videojs/videojs/lang/fr.js
index a7e9d7c3ca68..b254399b2c7c 100644
--- a/media/player/videojs/videojs/lang/fr.js
+++ b/media/player/videojs/videojs/lang/fr.js
@@ -68,7 +68,7 @@ videojs.addLanguage('fr', {
   "Raised": "Élevé",
   "Depressed": "Enfoncé",
   "Uniform": "Uniforme",
-  "Dropshadow": "Ombre portée",
+  "Drop shadow": "Ombre portée",
   "Font Family": "Famille de polices",
   "Proportional Sans-Serif": "Polices à chasse variable sans empattement (Proportional Sans-Serif)",
   "Monospace Sans-Serif": "Polices à chasse fixe sans empattement (Monospace Sans-Serif)",
@@ -90,5 +90,7 @@ videojs.addLanguage('fr', {
   "Color": "Couleur",
   "Opacity": "Opacité",
   "Text Background": "Arrière-plan du texte",
-  "Caption Area Background": "Arrière-plan de la zone de sous-titre"
+  "Caption Area Background": "Arrière-plan de la zone de sous-titre",
+  "Skip backward {1} seconds": "Reculer de {1} secondes",
+  "Skip forward {1} seconds": "Avancer de {1} secondes"
 });
\ No newline at end of file
diff --git a/media/player/videojs/videojs/lang/fr.json b/media/player/videojs/videojs/lang/fr.json
index 3d822a4fab44..513b64c5acc8 100644
--- a/media/player/videojs/videojs/lang/fr.json
+++ b/media/player/videojs/videojs/lang/fr.json
@@ -68,7 +68,7 @@
   "Raised": "Élevé",
   "Depressed": "Enfoncé",
   "Uniform": "Uniforme",
-  "Dropshadow": "Ombre portée",
+  "Drop shadow": "Ombre portée",
   "Font Family": "Famille de polices",
   "Proportional Sans-Serif": "Polices à chasse variable sans empattement (Proportional Sans-Serif)",
   "Monospace Sans-Serif": "Polices à chasse fixe sans empattement (Monospace Sans-Serif)",
@@ -90,5 +90,7 @@
   "Color": "Couleur",
   "Opacity": "Opacité",
   "Text Background": "Arrière-plan du texte",
-  "Caption Area Background": "Arrière-plan de la zone de sous-titre"
+  "Caption Area Background": "Arrière-plan de la zone de sous-titre",
+  "Skip backward {1} seconds": "Reculer de {1} secondes",
+  "Skip forward {1} seconds": "Avancer de {1} secondes"
 }
diff --git a/media/player/videojs/videojs/lang/gd.js b/media/player/videojs/videojs/lang/gd.js
index ccf004f7091a..c0b4ca70a857 100644
--- a/media/player/videojs/videojs/lang/gd.js
+++ b/media/player/videojs/videojs/lang/gd.js
@@ -68,7 +68,7 @@ videojs.addLanguage('gd', {
   "Raised": "Àrdaichte",
   "Depressed": "Air a bhrùthadh",
   "Uniform": "Cunbhalach",
-  "Dropshadow": "Sgàil",
+  "Drop shadow": "Sgàil",
   "Font Family": "Teaghlach a’ chrutha-chlò",
   "Proportional Sans-Serif": "Sans-serif co-rèireach",
   "Monospace Sans-Serif": "Sans-serif aon-leud",
diff --git a/media/player/videojs/videojs/lang/gd.json b/media/player/videojs/videojs/lang/gd.json
index cfe6e883c4ab..6d0684360801 100644
--- a/media/player/videojs/videojs/lang/gd.json
+++ b/media/player/videojs/videojs/lang/gd.json
@@ -68,7 +68,7 @@
   "Raised": "Àrdaichte",
   "Depressed": "Air a bhrùthadh",
   "Uniform": "Cunbhalach",
-  "Dropshadow": "Sgàil",
+  "Drop shadow": "Sgàil",
   "Font Family": "Teaghlach a’ chrutha-chlò",
   "Proportional Sans-Serif": "Sans-serif co-rèireach",
   "Monospace Sans-Serif": "Sans-serif aon-leud",
diff --git a/media/player/videojs/videojs/lang/gl.js b/media/player/videojs/videojs/lang/gl.js
index 26ac04daaad4..afe2cd87c605 100644
--- a/media/player/videojs/videojs/lang/gl.js
+++ b/media/player/videojs/videojs/lang/gl.js
@@ -68,7 +68,7 @@ videojs.addLanguage('gl', {
   "Raised": "Érguida",
   "Depressed": "Caída",
   "Uniform": "Uniforme",
-  "Dropshadow": "Sombra caída",
+  "Drop shadow": "Sombra caída",
   "Font Family": "Familia de letras",
   "Proportional Sans-Serif": "Sans-Serif proporcional",
   "Monospace Sans-Serif": "Sans-Serif monoespazo (caixa fixa)",
diff --git a/media/player/videojs/videojs/lang/gl.json b/media/player/videojs/videojs/lang/gl.json
index 2ebcd3ae1f91..9b0d7b12f003 100644
--- a/media/player/videojs/videojs/lang/gl.json
+++ b/media/player/videojs/videojs/lang/gl.json
@@ -68,7 +68,7 @@
   "Raised": "Érguida",
   "Depressed": "Caída",
   "Uniform": "Uniforme",
-  "Dropshadow": "Sombra caída",
+  "Drop shadow": "Sombra caída",
   "Font Family": "Familia de letras",
   "Proportional Sans-Serif": "Sans-Serif proporcional",
   "Monospace Sans-Serif": "Sans-Serif monoespazo (caixa fixa)",
diff --git a/media/player/videojs/videojs/lang/he.js b/media/player/videojs/videojs/lang/he.js
index b019d93a8988..f2a807fbe0df 100644
--- a/media/player/videojs/videojs/lang/he.js
+++ b/media/player/videojs/videojs/lang/he.js
@@ -66,7 +66,7 @@ videojs.addLanguage('he', {
   "Raised": "מורם",
   "Depressed": "מורד",
   "Uniform": "אחיד",
-  "Dropshadow": "הטלת צל",
+  "Drop shadow": "הטלת צל",
   "Font Family": "משפחת גופן",
   "Proportional Sans-Serif": "פרופורציוני וללא תגיות (Proportional Sans-Serif)",
   "Monospace Sans-Serif": "ברוחב אחיד וללא תגיות (Monospace Sans-Serif)",
diff --git a/media/player/videojs/videojs/lang/he.json b/media/player/videojs/videojs/lang/he.json
index 846b4e76af34..834bd5efadf4 100644
--- a/media/player/videojs/videojs/lang/he.json
+++ b/media/player/videojs/videojs/lang/he.json
@@ -66,7 +66,7 @@
 	"Raised": "מורם",
 	"Depressed": "מורד",
 	"Uniform": "אחיד",
-	"Dropshadow": "הטלת צל",
+	"Drop shadow": "הטלת צל",
 	"Font Family": "משפחת גופן",
 	"Proportional Sans-Serif": "פרופורציוני וללא תגיות (Proportional Sans-Serif)",
 	"Monospace Sans-Serif": "ברוחב אחיד וללא תגיות (Monospace Sans-Serif)",
diff --git a/media/player/videojs/videojs/lang/hi.js b/media/player/videojs/videojs/lang/hi.js
index 2f371fa76875..d6bf0e8fa19e 100644
--- a/media/player/videojs/videojs/lang/hi.js
+++ b/media/player/videojs/videojs/lang/hi.js
@@ -67,8 +67,8 @@ videojs.addLanguage('hi', {
   "None": "कोई नहीं",
   "Raised": "उठा हुआ",
   "Depressed": "उदास",
-  "Uniform": "वर्दी",
-  "Dropshadow": "परछाई",
+  "Uniform": "समान",
+  "Drop shadow": "परछाई",
   "Font Family": "फॉण्ट परिवार",
   "Proportional Sans-Serif": "प्रोपोरशनल साँस-सेरिफ",
   "Monospace Sans-Serif": "मोनोस्पास साँस-सेरिफ",
diff --git a/media/player/videojs/videojs/lang/hi.json b/media/player/videojs/videojs/lang/hi.json
index 44a8f5511f50..ffe859d59db3 100644
--- a/media/player/videojs/videojs/lang/hi.json
+++ b/media/player/videojs/videojs/lang/hi.json
@@ -67,8 +67,8 @@
   "None": "कोई नहीं",
   "Raised": "उठा हुआ",
   "Depressed": "उदास",
-  "Uniform": "वर्दी",
-  "Dropshadow": "परछाई",
+  "Uniform": "समान",
+  "Drop shadow": "परछाई",
   "Font Family": "फॉण्ट परिवार",
   "Proportional Sans-Serif": "प्रोपोरशनल साँस-सेरिफ",
   "Monospace Sans-Serif": "मोनोस्पास साँस-सेरिफ",
diff --git a/media/player/videojs/videojs/lang/hu.js b/media/player/videojs/videojs/lang/hu.js
index a3e1d4f07b2f..57f31b9fd781 100644
--- a/media/player/videojs/videojs/lang/hu.js
+++ b/media/player/videojs/videojs/lang/hu.js
@@ -61,7 +61,7 @@ videojs.addLanguage('hu', {
   "Text Edge Style": "Szövegél stílus",
   "This is a modal window": "Ez egy felugró ablak",
   "Cyan": "Cián",
-  "Dropshadow": "Árnyék",
+  "Drop shadow": "Árnyék",
   "End of dialog window.": "Párbeszédablak vége.",
   "Progress Bar": "Folyamatjelző sáv",
   "Beginning of dialog window. Escape will cancel and close the window.": "Párbeszédablak eleje. Az Escape gomb befejezi és bezárja az ablakot.",
diff --git a/media/player/videojs/videojs/lang/hu.json b/media/player/videojs/videojs/lang/hu.json
index c6060f98eaca..d9c394820c9b 100644
--- a/media/player/videojs/videojs/lang/hu.json
+++ b/media/player/videojs/videojs/lang/hu.json
@@ -61,7 +61,7 @@
   "Text Edge Style": "Szövegél stílus",
   "This is a modal window": "Ez egy felugró ablak",
   "Cyan": "Cián",
-  "Dropshadow": "Árnyék",
+  "Drop shadow": "Árnyék",
   "End of dialog window.": "Párbeszédablak vége.",
   "Progress Bar": "Folyamatjelző sáv",
   "Beginning of dialog window. Escape will cancel and close the window.": "Párbeszédablak eleje. Az Escape gomb befejezi és bezárja az ablakot.",
diff --git a/media/player/videojs/videojs/lang/it.js b/media/player/videojs/videojs/lang/it.js
index 0beb3aadfdf2..1d81fe002325 100644
--- a/media/player/videojs/videojs/lang/it.js
+++ b/media/player/videojs/videojs/lang/it.js
@@ -7,7 +7,7 @@ videojs.addLanguage('it', {
   "Current Time": "Orario attuale",
   "Duration": "Durata",
   "Remaining Time": "Tempo rimanente",
-  "Stream Type": "Tipo del Streaming",
+  "Stream Type": "Tipo di streaming",
   "LIVE": "LIVE",
   "Loaded": "Caricato",
   "Progress": "Stato",
@@ -15,9 +15,9 @@ videojs.addLanguage('it', {
   "progress bar timing: currentTime={1} duration={2}": "{1} di {2}",
   "Fullscreen": "Schermo intero",
   "Exit Fullscreen": "Chiudi Schermo intero",
-  "Mute": "Disattivare l’audio",
-  "Unmute": "Attivare l’audio",
-  "Playback Rate": "Tasso di riproduzione",
+  "Mute": "Disattiva l’audio",
+  "Unmute": "Attiva l’audio",
+  "Playback Rate": "Velocità di riproduzione",
   "Subtitles": "Sottotitoli",
   "subtitles off": "Senza sottotitoli",
   "Captions": "Sottotitoli non udenti",
@@ -27,11 +27,11 @@ videojs.addLanguage('it', {
   "descriptions off": "Descrizioni disattivate",
   "Audio Track": "Traccia audio",
   "Volume Level": "Livello del volume",
-  "You aborted the media playback": "La riproduzione del filmato è stata interrotta.",
-  "A network error caused the media download to fail part-way.": "Il download del filmato è stato interrotto a causa di un problema rete.",
-  "The media could not be loaded, either because the server or network failed or because the format is not supported.": "Il filmato non può essere caricato a causa di un errore nel server o nella rete o perché il formato non viene supportato.",
-  "The media playback was aborted due to a corruption problem or because the media used features your browser did not support.": "La riproduzione del filmato è stata interrotta a causa di un file danneggiato o per l’utilizzo di impostazioni non supportate dal browser.",
-  "No compatible source was found for this media.": "Non ci sono fonti compatibili per questo filmato.",
+  "You aborted the media playback": "La riproduzione del contenuto multimediale è stata interrotta.",
+  "A network error caused the media download to fail part-way.": "Il download del contenuto multimediale è stato interrotto a causa di un problema rete.",
+  "The media could not be loaded, either because the server or network failed or because the format is not supported.": "Il contenuto multimediale non può essere caricato a causa di un errore nel server o nella rete o perché il formato non viene supportato.",
+  "The media playback was aborted due to a corruption problem or because the media used features your browser did not support.": "La riproduzione del contenuto multimediale è stata interrotta a causa di un file danneggiato o per l’utilizzo di impostazioni non supportate dal browser.",
+  "No compatible source was found for this media.": "Non ci sono fonti compatibili per questo contenuto multimediale.",
   "The media is encrypted and we do not have the keys to decrypt it.": "Il contenuto multimediale è criptato e non disponiamo delle chiavi per decifrarlo.",
   "Play Video": "Riproduci il video",
   "Close": "Chiudi",
@@ -43,9 +43,9 @@ videojs.addLanguage('it', {
   ", opens subtitles settings dialog": ", aprire i parametri dei sottotitoli",
   ", opens descriptions settings dialog": ", aprire i parametri delle descrizioni",
   ", selected": ", selezionato",
-  "captions settings": "Parametri della trascrizione dei sottotitoli",
-  "subtitles settings": "Parametri dei sottotitoli",
-  "descriptions settings": "Parametri delle descrizioni",
+  "captions settings": "Parametri sottotitoli non udenti",
+  "subtitles settings": "Parametri sottotitoli",
+  "descriptions settings": "Parametri descrizioni",
   "Text": "Testo",
   "White": "Bianco",
   "Black": "Nero",
@@ -64,16 +64,16 @@ videojs.addLanguage('it', {
   "Text Edge Style": "Stile dei bordi del testo",
   "None": "Nessuno",
   "Uniform": "Uniforme",
-  "Dropshadow": "Ombreggiatura",
-  "Font Family": "Famiglia di caratteri",
+  "Drop shadow": "Ombra",
+  "Font Family": "Carattere",
   "Proportional Sans-Serif": "Sans-Serif proporzionale",
-  "Monospace Sans-Serif": "Sans-Serif monospazio",
+  "Monospace Sans-Serif": "Sans-Serif monospaziato",
   "Proportional Serif": "Serif proporzionale",
-  "Monospace Serif": "Serif monospazio",
+  "Monospace Serif": "Serif monospaziato",
   "Small Caps": "Maiuscoletto",
   "Reset": "Reinizializza",
   "restore all settings to the default values": "Ripristina i valori predefiniti per tutti i parametri",
-  "Done": "Operazione completata",
+  "Done": "Fatto",
   "Caption Settings Dialog": "Finestra di dialogo dei parametri della trascrizione dei sottotitoli",
   "Beginning of dialog window. Escape will cancel and close the window.": "Inizio della finestra di dialogo. Il tasto Esc annullerà l’operazione e chiuderà la finestra.",
   "End of dialog window.": "Fine della finestra di dialogo.",
@@ -82,8 +82,8 @@ videojs.addLanguage('it', {
   "Picture-in-Picture": "Picture-in-Picture",
   "Color": "Colore",
   "Opacity": "Opacità",
-  "Text Background": "Sfondo del testo",
-  "Caption Area Background": "Sfondo dell'area dei sottotitoli",
-  "Skip forward {1} seconds": "Avanti di {1} secondi",
-  "Skip backward {1} seconds": "Indietro di {1} secondi"
+  "Text Background": "Sfondo testo",
+  "Caption Area Background": "Sfondo area sottotitoli",
+  "Skip forward {1} seconds": "Avanti {1} secondi",
+  "Skip backward {1} seconds": "Indietro {1} secondi"
 });
\ No newline at end of file
diff --git a/media/player/videojs/videojs/lang/it.json b/media/player/videojs/videojs/lang/it.json
index 7fc044564d80..f094d1d15836 100644
--- a/media/player/videojs/videojs/lang/it.json
+++ b/media/player/videojs/videojs/lang/it.json
@@ -7,7 +7,7 @@
   "Current Time": "Orario attuale",
   "Duration": "Durata",
   "Remaining Time": "Tempo rimanente",
-  "Stream Type": "Tipo del Streaming",
+  "Stream Type": "Tipo di streaming",
   "LIVE": "LIVE",
   "Loaded": "Caricato",
   "Progress": "Stato",
@@ -15,9 +15,9 @@
   "progress bar timing: currentTime={1} duration={2}": "{1} di {2}",
   "Fullscreen": "Schermo intero",
   "Exit Fullscreen": "Chiudi Schermo intero",
-  "Mute": "Disattivare l’audio",
-  "Unmute": "Attivare l’audio",
-  "Playback Rate": "Tasso di riproduzione",
+  "Mute": "Disattiva l’audio",
+  "Unmute": "Attiva l’audio",
+  "Playback Rate": "Velocità di riproduzione",
   "Subtitles": "Sottotitoli",
   "subtitles off": "Senza sottotitoli",
   "Captions": "Sottotitoli non udenti",
@@ -27,25 +27,28 @@
   "descriptions off": "Descrizioni disattivate",
   "Audio Track": "Traccia audio",
   "Volume Level": "Livello del volume",
-  "You aborted the media playback": "La riproduzione del filmato è stata interrotta.",
-  "A network error caused the media download to fail part-way.": "Il download del filmato è stato interrotto a causa di un problema rete.",
-  "The media could not be loaded, either because the server or network failed or because the format is not supported.": "Il filmato non può essere caricato a causa di un errore nel server o nella rete o perché il formato non viene supportato.",
-  "The media playback was aborted due to a corruption problem or because the media used features your browser did not support.": "La riproduzione del filmato è stata interrotta a causa di un file danneggiato o per l’utilizzo di impostazioni non supportate dal browser.",
-  "No compatible source was found for this media.": "Non ci sono fonti compatibili per questo filmato.",
+  "You aborted the media playback": "La riproduzione del contenuto multimediale è stata interrotta.",
+  "A network error caused the media download to fail part-way.": "Il download del contenuto multimediale è stato interrotto a causa di un problema rete.",
+  "The media could not be loaded, either because the server or network failed or because the format is not supported.":
+    "Il contenuto multimediale non può essere caricato a causa di un errore nel server o nella rete o perché il formato non viene supportato.",
+  "The media playback was aborted due to a corruption problem or because the media used features your browser did not support.":
+    "La riproduzione del contenuto multimediale è stata interrotta a causa di un file danneggiato o per l’utilizzo di impostazioni non supportate dal browser.",
+  "No compatible source was found for this media.": "Non ci sono fonti compatibili per questo contenuto multimediale.",
   "The media is encrypted and we do not have the keys to decrypt it.": "Il contenuto multimediale è criptato e non disponiamo delle chiavi per decifrarlo.",
   "Play Video": "Riproduci il video",
   "Close": "Chiudi",
   "Close Modal Dialog": "Chiudi la finestra di dialogo",
   "Modal Window": "Finestra di dialogo",
   "This is a modal window": "Questa è una finestra di dialogo",
-  "This modal can be closed by pressing the Escape key or activating the close button.": "Questa finestra di dialogo può essere chiusa premendo sul tasto Esc o attivando il pulsante di chiusura.",
+  "This modal can be closed by pressing the Escape key or activating the close button.":
+    "Questa finestra di dialogo può essere chiusa premendo sul tasto Esc o attivando il pulsante di chiusura.",
   ", opens captions settings dialog": ", aprire i parametri della trascrizione dei sottotitoli",
   ", opens subtitles settings dialog": ", aprire i parametri dei sottotitoli",
   ", opens descriptions settings dialog": ", aprire i parametri delle descrizioni",
   ", selected": ", selezionato",
-  "captions settings": "Parametri della trascrizione dei sottotitoli",
-  "subtitles settings": "Parametri dei sottotitoli",
-  "descriptions settings": "Parametri delle descrizioni",
+  "captions settings": "Parametri sottotitoli non udenti",
+  "subtitles settings": "Parametri sottotitoli",
+  "descriptions settings": "Parametri descrizioni",
   "Text": "Testo",
   "White": "Bianco",
   "Black": "Nero",
@@ -64,26 +67,27 @@
   "Text Edge Style": "Stile dei bordi del testo",
   "None": "Nessuno",
   "Uniform": "Uniforme",
-  "Dropshadow": "Ombreggiatura",
-  "Font Family": "Famiglia di caratteri",
+  "Drop shadow": "Ombra",
+  "Font Family": "Carattere",
   "Proportional Sans-Serif": "Sans-Serif proporzionale",
-  "Monospace Sans-Serif": "Sans-Serif monospazio",
+  "Monospace Sans-Serif": "Sans-Serif monospaziato",
   "Proportional Serif": "Serif proporzionale",
-  "Monospace Serif": "Serif monospazio",
+  "Monospace Serif": "Serif monospaziato",
   "Small Caps": "Maiuscoletto",
   "Reset": "Reinizializza",
   "restore all settings to the default values": "Ripristina i valori predefiniti per tutti i parametri",
-  "Done": "Operazione completata",
+  "Done": "Fatto",
   "Caption Settings Dialog": "Finestra di dialogo dei parametri della trascrizione dei sottotitoli",
-  "Beginning of dialog window. Escape will cancel and close the window.": "Inizio della finestra di dialogo. Il tasto Esc annullerà l’operazione e chiuderà la finestra.",
+  "Beginning of dialog window. Escape will cancel and close the window.":
+    "Inizio della finestra di dialogo. Il tasto Esc annullerà l’operazione e chiuderà la finestra.",
   "End of dialog window.": "Fine della finestra di dialogo.",
   "{1} is loading.": "{1} in fase di caricamento.",
   "Exit Picture-in-Picture": "Esci dalla modalità Picture-in-Picture",
   "Picture-in-Picture": "Picture-in-Picture",
   "Color": "Colore",
   "Opacity": "Opacità",
-  "Text Background": "Sfondo del testo",
-  "Caption Area Background": "Sfondo dell'area dei sottotitoli",
-  "Skip forward {1} seconds": "Avanti di {1} secondi",
-  "Skip backward {1} seconds": "Indietro di {1} secondi"
+  "Text Background": "Sfondo testo",
+  "Caption Area Background": "Sfondo area sottotitoli",
+  "Skip forward {1} seconds": "Avanti {1} secondi",
+  "Skip backward {1} seconds": "Indietro {1} secondi"
 }
diff --git a/media/player/videojs/videojs/lang/ja.js b/media/player/videojs/videojs/lang/ja.js
index 64db927733bb..a306a7483ddc 100644
--- a/media/player/videojs/videojs/lang/ja.js
+++ b/media/player/videojs/videojs/lang/ja.js
@@ -68,7 +68,7 @@ videojs.addLanguage('ja', {
   "Raised": "浮き出し",
   "Depressed": "浮き彫り",
   "Uniform": "均一",
-  "Dropshadow": "影付き",
+  "Drop shadow": "影付き",
   "Font Family": "フォントの種類",
   "Proportional Sans-Serif": "セリフなし可変幅フォント",
   "Monospace Sans-Serif": "セリフなし等幅フォント",
diff --git a/media/player/videojs/videojs/lang/ja.json b/media/player/videojs/videojs/lang/ja.json
index 00f8714a9753..116fb13fcd5d 100644
--- a/media/player/videojs/videojs/lang/ja.json
+++ b/media/player/videojs/videojs/lang/ja.json
@@ -68,7 +68,7 @@
   "Raised": "浮き出し",
   "Depressed": "浮き彫り",
   "Uniform": "均一",
-  "Dropshadow": "影付き",
+  "Drop shadow": "影付き",
   "Font Family": "フォントの種類",
   "Proportional Sans-Serif": "セリフなし可変幅フォント",
   "Monospace Sans-Serif": "セリフなし等幅フォント",
diff --git a/media/player/videojs/videojs/lang/ko.js b/media/player/videojs/videojs/lang/ko.js
index 8589163ec946..efe056752d47 100644
--- a/media/player/videojs/videojs/lang/ko.js
+++ b/media/player/videojs/videojs/lang/ko.js
@@ -68,7 +68,7 @@ videojs.addLanguage('ko', {
   "Raised": "글자 위치 올림",
   "Depressed": "글자 위치 내림",
   "Uniform": "균일",
-  "Dropshadow": "그림자 효과 넣기",
+  "Drop shadow": "그림자 효과 넣기",
   "Font Family": "폰트 모음",
   "Proportional Sans-Serif": "비례 산세리프체",
   "Monospace Sans-Serif": "고정폭 산세리프체",
diff --git a/media/player/videojs/videojs/lang/ko.json b/media/player/videojs/videojs/lang/ko.json
index 82ec283fd6a9..d7700b4b63df 100644
--- a/media/player/videojs/videojs/lang/ko.json
+++ b/media/player/videojs/videojs/lang/ko.json
@@ -68,7 +68,7 @@
   "Raised": "글자 위치 올림",
   "Depressed": "글자 위치 내림",
   "Uniform": "균일",
-  "Dropshadow": "그림자 효과 넣기",
+  "Drop shadow": "그림자 효과 넣기",
   "Font Family": "폰트 모음",
   "Proportional Sans-Serif": "비례 산세리프체",
   "Monospace Sans-Serif": "고정폭 산세리프체",
diff --git a/media/player/videojs/videojs/lang/lv.js b/media/player/videojs/videojs/lang/lv.js
index 11dd632544a9..1cf82ab08a7d 100644
--- a/media/player/videojs/videojs/lang/lv.js
+++ b/media/player/videojs/videojs/lang/lv.js
@@ -68,7 +68,7 @@ videojs.addLanguage('lv', {
   "Raised": "Izvirzīts",
   "Depressed": "Samazināts",
   "Uniform": "Vienmērīgs",
-  "Dropshadow": "Ēnots",
+  "Drop shadow": "Ēnots",
   "Font Family": "Šrifts",
   "Proportional Sans-Serif": "Proportional Sans-Serif",
   "Monospace Sans-Serif": "Monospace Sans-Serif",
diff --git a/media/player/videojs/videojs/lang/lv.json b/media/player/videojs/videojs/lang/lv.json
index 3e5ce648a5a2..19f9f68caf91 100644
--- a/media/player/videojs/videojs/lang/lv.json
+++ b/media/player/videojs/videojs/lang/lv.json
@@ -68,7 +68,7 @@
   "Raised": "Izvirzīts",
   "Depressed": "Samazināts",
   "Uniform": "Vienmērīgs",
-  "Dropshadow": "Ēnots",
+  "Drop shadow": "Ēnots",
   "Font Family": "Šrifts",
   "Proportional Sans-Serif": "Proportional Sans-Serif",
   "Monospace Sans-Serif": "Monospace Sans-Serif",
diff --git a/media/player/videojs/videojs/lang/nb.js b/media/player/videojs/videojs/lang/nb.js
index 0c990c3f502e..21fa0d5ffe32 100644
--- a/media/player/videojs/videojs/lang/nb.js
+++ b/media/player/videojs/videojs/lang/nb.js
@@ -68,7 +68,7 @@ videojs.addLanguage('nb', {
   "Raised": "Uthevet",
   "Depressed": "Nedtrykt",
   "Uniform": "Enkel",
-  "Dropshadow": "Skygge",
+  "Drop shadow": "Skygge",
   "Font Family": "Skrifttype",
   "Proportional Sans-Serif": "Proporsjonal skrift uten seriffer",
   "Monospace Sans-Serif": "Fastbreddeskrift uten seriffer",
diff --git a/media/player/videojs/videojs/lang/nb.json b/media/player/videojs/videojs/lang/nb.json
index a2b38ad21536..12fbe77a8d62 100644
--- a/media/player/videojs/videojs/lang/nb.json
+++ b/media/player/videojs/videojs/lang/nb.json
@@ -68,7 +68,7 @@
   "Raised": "Uthevet",
   "Depressed": "Nedtrykt",
   "Uniform": "Enkel",
-  "Dropshadow": "Skygge",
+  "Drop shadow": "Skygge",
   "Font Family": "Skrifttype",
   "Proportional Sans-Serif": "Proporsjonal skrift uten seriffer",
   "Monospace Sans-Serif": "Fastbreddeskrift uten seriffer",
diff --git a/media/player/videojs/videojs/lang/nl.js b/media/player/videojs/videojs/lang/nl.js
index e4e829ca98ae..fb7c35b1b4da 100644
--- a/media/player/videojs/videojs/lang/nl.js
+++ b/media/player/videojs/videojs/lang/nl.js
@@ -68,7 +68,7 @@ videojs.addLanguage('nl', {
   "Raised": "Verhoogd",
   "Depressed": "Ingedrukt",
   "Uniform": "Uniform",
-  "Dropshadow": "Schaduw",
+  "Drop shadow": "Schaduw",
   "Font Family": "Lettertype",
   "Proportional Sans-Serif": "Proportioneel sans-serif",
   "Monospace Sans-Serif": "Monospace sans-serif",
diff --git a/media/player/videojs/videojs/lang/nl.json b/media/player/videojs/videojs/lang/nl.json
index 8d22c9a9a219..92c9aec50449 100644
--- a/media/player/videojs/videojs/lang/nl.json
+++ b/media/player/videojs/videojs/lang/nl.json
@@ -68,7 +68,7 @@
   "Raised": "Verhoogd",
   "Depressed": "Ingedrukt",
   "Uniform": "Uniform",
-  "Dropshadow": "Schaduw",
+  "Drop shadow": "Schaduw",
   "Font Family": "Lettertype",
   "Proportional Sans-Serif": "Proportioneel sans-serif",
   "Monospace Sans-Serif": "Monospace sans-serif",
diff --git a/media/player/videojs/videojs/lang/nn.js b/media/player/videojs/videojs/lang/nn.js
index e87207d5e605..ed5b17ec0154 100644
--- a/media/player/videojs/videojs/lang/nn.js
+++ b/media/player/videojs/videojs/lang/nn.js
@@ -68,7 +68,7 @@ videojs.addLanguage('nn', {
   "Raised": "Utheva",
   "Depressed": "Nedtrykt",
   "Uniform": "Enkel",
-  "Dropshadow": "Skugge",
+  "Drop shadow": "Skugge",
   "Font Family": "Skrifttype",
   "Proportional Sans-Serif": "Proporsjonal skrift utan seriffar",
   "Monospace Sans-Serif": "Fastbreddeskrift utan seriffar",
diff --git a/media/player/videojs/videojs/lang/nn.json b/media/player/videojs/videojs/lang/nn.json
index 163783857eb8..e22711fa7834 100644
--- a/media/player/videojs/videojs/lang/nn.json
+++ b/media/player/videojs/videojs/lang/nn.json
@@ -68,7 +68,7 @@
   "Raised": "Utheva",
   "Depressed": "Nedtrykt",
   "Uniform": "Enkel",
-  "Dropshadow": "Skugge",
+  "Drop shadow": "Skugge",
   "Font Family": "Skrifttype",
   "Proportional Sans-Serif": "Proporsjonal skrift utan seriffar",
   "Monospace Sans-Serif": "Fastbreddeskrift utan seriffar",
diff --git a/media/player/videojs/videojs/lang/np.js b/media/player/videojs/videojs/lang/np.js
new file mode 100644
index 000000000000..a2098420d4e7
--- /dev/null
+++ b/media/player/videojs/videojs/lang/np.js
@@ -0,0 +1,89 @@
+videojs.addLanguage('np', {
+  "Audio Player": "ऑडियो प्लेयर",
+  "Video Player": "भिडियो प्लेयर",
+  "Play": "चलाउनु",
+  "Pause": "रोक्नु",
+  "Replay": "फेरि चलाउनु",
+  "Current Time": "हालको समय",
+  "Duration": "अवधि",
+  "Remaining Time": "बाँकी समय",
+  "Stream Type": "स्ट्रीम प्रकार",
+  "LIVE": "लाइव",
+  "Seek to live, currently behind live": "लाइभ भागमा सार्नुहोस्, हालको अवस्थामा यो लाइभबाट पछाडी छ",
+  "Seek to live, currently playing live": "लाइभ भागमा सार्नुहोस्, हालको अवस्थामा यो लाइभमा छ",
+  "Loaded": "लोड भएको छ",
+  "Progress": "प्रगति",
+  "Progress Bar": "प्रोगेस बार",
+  "progress bar timing: currentTime={1} duration={2}": "प्रगति बार को समय: {2} मध्ये {1}",
+  "Fullscreen": "फ़ुल स्क्रीन",
+  "Exit Fullscreen": "फ़ुल स्क्रीनबाट बाहिर निस्कनुहोस्",
+  "Mute": "म्यूट गर्नुहोस्",
+  "Unmute": "अनम्यूट गर्नुहोस्",
+  "Playback Rate": "प्लेब्याक दर",
+  "Subtitles": "उपशीर्षक",
+  "subtitles off": "उपशीर्षक बंद",
+  "Captions": "कैप्शन",
+  "captions off": "कैप्शन बंद",
+  "Chapters": "अध्याय",
+  "Descriptions": "विवरण",
+  "descriptions off": "विवरण बंद",
+  "Audio Track": "ऑडियो ट्रैक",
+  "Volume Level": "वॉल्यूम स्तर",
+  "You aborted the media playback": "तपाईंले मिडिया प्लेब्याक रद्द गर्नुभयो",
+  "A network error caused the media download to fail part-way.": "नेटवर्क त्रुटिले मिडिया डाउनलोडलाई आधा मार्गमा असफल गर्यो।",
+  "The media could not be loaded, either because the server or network failed or because the format is not supported.": "मिडिया लोड गर्न सकिएन, या तो नेटवर्क विफल भयो वा त्यसको प्रारूप समर्थित भएन।",
+  "The media playback was aborted due to a corruption problem or because the media used features your browser did not support.": "मिडिया प्लेबैक अवरुद्ध गरियो, कारण यो हुन सक्छ कि मिडिया खराब भयो वा मिडिया तपाईंको ब्राउजरद्वारा समर्थित भएन।",
+  "No compatible source was found for this media.": "यस मिडियाका लागि कुनै समर्थित स्रोत फेला परेन।",
+  "The media is encrypted and we do not have the keys to decrypt it.": "मिडिया एन्क्रिप्ट गरिएको छ र हामीले त्यसो डिक्रिप्ट गर्ने कुनै किसिमका कुञ्जीहरू छैनन्।",
+  "Play Video": "भिडियो चलाउनुहोस्",
+  "Close": "बन्द गर्नुहोस्",
+  "Close Modal Dialog": "मोडल डायलग बन्द गर्नुहोस्",
+  "Modal Window": "मोडल विंडो",
+  "This is a modal window": "यो एक मोडल विन्डो हो।",
+  "This modal can be closed by pressing the Escape key or activating the close button.": "यस मोडललाई बन्द गर्न तपाईंले Escape की बटन थिच्न सक्नुहुन्छ वा बन्द गर्ने बटन थिच्न सक्नुहुन्छ।",
+  ", opens captions settings dialog": ", कैप्शन सेटिंग डायलॉग खोलिनेछ",
+  ", opens subtitles settings dialog": ", उपशीर्षक सेटिंग्स संवाद खोलिनेछ",
+  ", opens descriptions settings dialog": ", विवरण सेटिंग संवाद खोलिनेछ",
+  ", selected": ", चयन गरियो",
+  "captions settings": "कैप्शन सेटिंग",
+  "subtitles settings": "उपशीर्षक सेटिंग",
+  "descriptions settings": "विवरण सेटिंग",
+  "Text": "टेक्स्ट",
+  "White": "सेतो",
+  "Black": "कालो",
+  "Red": "रातो",
+  "Green": "हरियो",
+  "Blue": "नीलो",
+  "Yellow": "पहेलो",
+  "Magenta": "मैजेंटा",
+  "Cyan": "सियान",
+  "Background": "बैकग्राउंड",
+  "Window": "विंडो",
+  "Transparent": "पारदर्शी",
+  "Semi-Transparent": "अर्द्ध पारदर्शी",
+  "Opaque": "अपारदर्शी",
+  "Font Size": "फ़ॉन्ट आकार",
+  "Text Edge Style": "टेक्स्ट एज स्टाइल",
+  "None": "कुनै होइन",
+  "Raised": "उठाइएको",
+  "Depressed": "निराश",
+  "Uniform": "समान",
+  "Dropshadow": "छाया",
+  "Font Family": "फॉण्ट परिवार",
+  "Proportional Sans-Serif": "प्रोपोरशनल साँस-सेरिफ",
+  "Monospace Sans-Serif": "मोनोस्पास साँस-सेरिफ",
+  "Proportional Serif": "प्रोपोरशनल सेरिफ",
+  "Monospace Serif": "मोनोस्पास सेरिफ",
+  "Casual": "अनौपचारिक",
+  "Script": "स्क्रिप्ट",
+  "Small Caps": "छोटो अक्षर",
+  "Reset": "रीसेट गरौ",
+  "restore all settings to the default values": "सबै सेटिङहरूलाई मूल्यमा पुन: स्थापित गर्नुहोस्।",
+  "Done": "पूर्ण",
+  "Caption Settings Dialog": "कैप्शन सेटिंग्स डायलॉग",
+  "Beginning of dialog window. Escape will cancel and close the window.": "वार्ता विन्डोको प्रारम्भिक भाग।। Escape बटनले रद्द गर्दछ र विन्डोलाई बन्द गर्दछ।",
+  "End of dialog window.": "विन्डोको समाप्ति।",
+  "{1} is loading.": "{1} लोड हुँदैछ।",
+  "Exit Picture-in-Picture": "पिक्चर-इन-पिक्चर बाट बाहिर निस्कौ।",
+  "Picture-in-Picture": "पिक्चर-इन-पिक्चर"
+});
\ No newline at end of file
diff --git a/media/player/videojs/videojs/lang/np.json b/media/player/videojs/videojs/lang/np.json
new file mode 100644
index 000000000000..324f56bf64b7
--- /dev/null
+++ b/media/player/videojs/videojs/lang/np.json
@@ -0,0 +1,90 @@
+
+{
+  "Audio Player": "ऑडियो प्लेयर",
+  "Video Player": "भिडियो प्लेयर",
+  "Play": "चलाउनु",
+  "Pause": "रोक्नु",
+  "Replay": "फेरि चलाउनु",
+  "Current Time": "हालको समय",
+  "Duration": "अवधि",
+  "Remaining Time": "बाँकी समय",
+  "Stream Type": "स्ट्रीम प्रकार",
+  "LIVE": "लाइव",
+  "Seek to live, currently behind live": "लाइभ भागमा सार्नुहोस्, हालको अवस्थामा यो लाइभबाट पछाडी छ",
+  "Seek to live, currently playing live": "लाइभ भागमा सार्नुहोस्, हालको अवस्थामा यो लाइभमा छ",
+  "Loaded": "लोड भएको छ",
+  "Progress": "प्रगति",
+  "Progress Bar": "प्रोगेस बार",
+  "progress bar timing: currentTime={1} duration={2}": "प्रगति बार को समय: {2} मध्ये {1}",
+  "Fullscreen": "फ़ुल स्क्रीन",
+  "Exit Fullscreen": "फ़ुल स्क्रीनबाट बाहिर निस्कनुहोस्",
+  "Mute": "म्यूट गर्नुहोस्",
+  "Unmute": "अनम्यूट गर्नुहोस्",
+  "Playback Rate": "प्लेब्याक दर",
+  "Subtitles": "उपशीर्षक",
+  "subtitles off": "उपशीर्षक बंद",
+  "Captions": "कैप्शन",
+  "captions off": "कैप्शन बंद",
+  "Chapters": "अध्याय",
+  "Descriptions": "विवरण",
+  "descriptions off": "विवरण बंद",
+  "Audio Track": "ऑडियो ट्रैक",
+  "Volume Level": "वॉल्यूम स्तर",
+  "You aborted the media playback": "तपाईंले मिडिया प्लेब्याक रद्द गर्नुभयो",
+  "A network error caused the media download to fail part-way.": "नेटवर्क त्रुटिले मिडिया डाउनलोडलाई आधा मार्गमा असफल गर्यो।",
+  "The media could not be loaded, either because the server or network failed or because the format is not supported.": "मिडिया लोड गर्न सकिएन, या तो नेटवर्क विफल भयो वा त्यसको प्रारूप समर्थित भएन।",
+  "The media playback was aborted due to a corruption problem or because the media used features your browser did not support.": "मिडिया प्लेबैक अवरुद्ध गरियो, कारण यो हुन सक्छ कि मिडिया खराब भयो वा मिडिया तपाईंको ब्राउजरद्वारा समर्थित भएन।",
+  "No compatible source was found for this media.": "यस मिडियाका लागि कुनै समर्थित स्रोत फेला परेन।",
+  "The media is encrypted and we do not have the keys to decrypt it.": "मिडिया एन्क्रिप्ट गरिएको छ र हामीले त्यसो डिक्रिप्ट गर्ने कुनै किसिमका कुञ्जीहरू छैनन्।",
+  "Play Video": "भिडियो चलाउनुहोस्",
+  "Close": "बन्द गर्नुहोस्",
+  "Close Modal Dialog": "मोडल डायलग बन्द गर्नुहोस्",
+  "Modal Window": "मोडल विंडो",
+  "This is a modal window": "यो एक मोडल विन्डो हो।",
+  "This modal can be closed by pressing the Escape key or activating the close button.": "यस मोडललाई बन्द गर्न तपाईंले Escape की बटन थिच्न सक्नुहुन्छ वा बन्द गर्ने बटन थिच्न सक्नुहुन्छ।",
+  ", opens captions settings dialog": ", कैप्शन सेटिंग डायलॉग खोलिनेछ",
+  ", opens subtitles settings dialog": ", उपशीर्षक सेटिंग्स संवाद खोलिनेछ",
+  ", opens descriptions settings dialog": ", विवरण सेटिंग संवाद खोलिनेछ",
+  ", selected": ", चयन गरियो",
+  "captions settings": "कैप्शन सेटिंग",
+  "subtitles settings": "उपशीर्षक सेटिंग",
+  "descriptions settings": "विवरण सेटिंग",
+  "Text": "टेक्स्ट",
+  "White": "सेतो",
+  "Black": "कालो",
+  "Red": "रातो",
+  "Green": "हरियो",
+  "Blue": "नीलो",
+  "Yellow": "पहेलो",
+  "Magenta": "मैजेंटा",
+  "Cyan": "सियान",
+  "Background": "बैकग्राउंड",
+  "Window": "विंडो",
+  "Transparent": "पारदर्शी",
+  "Semi-Transparent": "अर्द्ध पारदर्शी",
+  "Opaque": "अपारदर्शी",
+  "Font Size": "फ़ॉन्ट आकार",
+  "Text Edge Style": "टेक्स्ट एज स्टाइल",
+  "None": "कुनै होइन",
+  "Raised": "उठाइएको",
+  "Depressed": "निराश",
+  "Uniform": "समान",
+  "Dropshadow": "छाया",
+  "Font Family": "फॉण्ट परिवार",
+  "Proportional Sans-Serif": "प्रोपोरशनल साँस-सेरिफ",
+  "Monospace Sans-Serif": "मोनोस्पास साँस-सेरिफ",
+  "Proportional Serif": "प्रोपोरशनल सेरिफ",
+  "Monospace Serif": "मोनोस्पास सेरिफ",
+  "Casual": "अनौपचारिक",
+  "Script": "स्क्रिप्ट",
+  "Small Caps": "छोटो अक्षर",
+  "Reset": "रीसेट गरौ",
+  "restore all settings to the default values": "सबै सेटिङहरूलाई मूल्यमा पुन: स्थापित गर्नुहोस्।",
+  "Done": "पूर्ण",
+  "Caption Settings Dialog": "कैप्शन सेटिंग्स डायलॉग",
+  "Beginning of dialog window. Escape will cancel and close the window.": "वार्ता विन्डोको प्रारम्भिक भाग।। Escape बटनले रद्द गर्दछ र विन्डोलाई बन्द गर्दछ।",
+  "End of dialog window.": "विन्डोको समाप्ति।",
+  "{1} is loading.": "{1} लोड हुँदैछ।",
+  "Exit Picture-in-Picture": "पिक्चर-इन-पिक्चर बाट बाहिर निस्कौ।",
+  "Picture-in-Picture": "पिक्चर-इन-पिक्चर"
+}
diff --git a/media/player/videojs/videojs/lang/oc.js b/media/player/videojs/videojs/lang/oc.js
index c785562118d8..2bb76b123de2 100644
--- a/media/player/videojs/videojs/lang/oc.js
+++ b/media/player/videojs/videojs/lang/oc.js
@@ -68,7 +68,7 @@ videojs.addLanguage('oc', {
   "Raised": "Naut",
   "Depressed": "Enfonsat",
   "Uniform": "Unifòrme",
-  "Dropshadow": "Ombrat",
+  "Drop shadow": "Ombrat",
   "Font Family": "Familha de polissa",
   "Proportional Sans-Serif": "Sans-Serif proporcionala",
   "Monospace Sans-Serif": "Monospace Sans-Serif",
diff --git a/media/player/videojs/videojs/lang/oc.json b/media/player/videojs/videojs/lang/oc.json
index 94684e808037..1b434659d996 100644
--- a/media/player/videojs/videojs/lang/oc.json
+++ b/media/player/videojs/videojs/lang/oc.json
@@ -68,7 +68,7 @@
   "Raised": "Naut",
   "Depressed": "Enfonsat",
   "Uniform": "Unifòrme",
-  "Dropshadow": "Ombrat",
+  "Drop shadow": "Ombrat",
   "Font Family": "Familha de polissa",
   "Proportional Sans-Serif": "Sans-Serif proporcionala",
   "Monospace Sans-Serif": "Monospace Sans-Serif",
diff --git a/media/player/videojs/videojs/lang/pt-BR.js b/media/player/videojs/videojs/lang/pt-BR.js
index 3f6157599e22..184b2e893211 100644
--- a/media/player/videojs/videojs/lang/pt-BR.js
+++ b/media/player/videojs/videojs/lang/pt-BR.js
@@ -66,7 +66,7 @@ videojs.addLanguage('pt-BR', {
   "Raised": "Elevado",
   "Depressed": "Acachapado",
   "Uniform": "Uniforme",
-  "Dropshadow": "Sombra de projeção",
+  "Drop shadow": "Sombra de projeção",
   "Font Family": "Família da Fonte",
   "Proportional Sans-Serif": "Sans-Serif(Sem serifa) Proporcional",
   "Monospace Sans-Serif": "Sans-Serif(Sem serifa) Monoespaçada",
diff --git a/media/player/videojs/videojs/lang/pt-BR.json b/media/player/videojs/videojs/lang/pt-BR.json
index 550b4cb5c416..8b8a31dd4d79 100644
--- a/media/player/videojs/videojs/lang/pt-BR.json
+++ b/media/player/videojs/videojs/lang/pt-BR.json
@@ -67,7 +67,7 @@
   "Raised": "Elevado",
   "Depressed": "Acachapado",
   "Uniform": "Uniforme",
-  "Dropshadow": "Sombra de projeção",
+  "Drop shadow": "Sombra de projeção",
   "Font Family": "Família da Fonte",
   "Proportional Sans-Serif": "Sans-Serif(Sem serifa) Proporcional",
   "Monospace Sans-Serif": "Sans-Serif(Sem serifa) Monoespaçada",
diff --git a/media/player/videojs/videojs/lang/pt-PT.js b/media/player/videojs/videojs/lang/pt-PT.js
index 63f11d4fa62f..86882a0e0886 100644
--- a/media/player/videojs/videojs/lang/pt-PT.js
+++ b/media/player/videojs/videojs/lang/pt-PT.js
@@ -37,5 +37,7 @@ videojs.addLanguage('pt-PT', {
   ", opens captions settings dialog": ", abre janela com definições de legendas",
   ", opens subtitles settings dialog": ", abre janela com definições de legendas",
   ", opens descriptions settings dialog": ", abre janela com definições de descrições",
-  ", selected": ", seleccionado"
+  ", selected": ", seleccionado",
+  "Skip backward {1} seconds": "Recuar de {1} segundos",
+  "Skip forward {1} seconds": "Avançar de {1} segundos"
 });
\ No newline at end of file
diff --git a/media/player/videojs/videojs/lang/pt-PT.json b/media/player/videojs/videojs/lang/pt-PT.json
index 2197896f9988..66af48b1a0af 100644
--- a/media/player/videojs/videojs/lang/pt-PT.json
+++ b/media/player/videojs/videojs/lang/pt-PT.json
@@ -37,5 +37,7 @@
   ", opens captions settings dialog": ", abre janela com definições de legendas",
   ", opens subtitles settings dialog": ", abre janela com definições de legendas",
   ", opens descriptions settings dialog": ", abre janela com definições de descrições",
-  ", selected": ", seleccionado"
+  ", selected": ", seleccionado",
+  "Skip backward {1} seconds": "Recuar de {1} segundos",
+  "Skip forward {1} seconds": "Avançar de {1} segundos"
 }
diff --git a/media/player/videojs/videojs/lang/ru.js b/media/player/videojs/videojs/lang/ru.js
index 38089ad89ddb..678336414a06 100644
--- a/media/player/videojs/videojs/lang/ru.js
+++ b/media/player/videojs/videojs/lang/ru.js
@@ -68,7 +68,7 @@ videojs.addLanguage('ru', {
   "Raised": "Поднятый",
   "Depressed": "Пониженный",
   "Uniform": "Одинаковый",
-  "Dropshadow": "Тень",
+  "Drop shadow": "Тень",
   "Font Family": "Шрифт",
   "Proportional Sans-Serif": "Пропорциональный без засечек",
   "Monospace Sans-Serif": "Моноширинный без засечек",
diff --git a/media/player/videojs/videojs/lang/ru.json b/media/player/videojs/videojs/lang/ru.json
index 507cf6856f4e..004cbd348be6 100644
--- a/media/player/videojs/videojs/lang/ru.json
+++ b/media/player/videojs/videojs/lang/ru.json
@@ -68,7 +68,7 @@
   "Raised": "Поднятый",
   "Depressed": "Пониженный",
   "Uniform": "Одинаковый",
-  "Dropshadow": "Тень",
+  "Drop shadow": "Тень",
   "Font Family": "Шрифт",
   "Proportional Sans-Serif": "Пропорциональный без засечек",
   "Monospace Sans-Serif": "Моноширинный без засечек",
diff --git a/media/player/videojs/videojs/lang/sl.js b/media/player/videojs/videojs/lang/sl.js
index 8be4931254c1..423f2b530980 100644
--- a/media/player/videojs/videojs/lang/sl.js
+++ b/media/player/videojs/videojs/lang/sl.js
@@ -68,7 +68,7 @@ videojs.addLanguage('sl', {
   "Raised": "Dvignjeno",
   "Depressed": "Vtisnjeno",
   "Uniform": "Enakomerno",
-  "Dropshadow": "S senco",
+  "Drop shadow": "S senco",
   "Font Family": "Družina pisave",
   "Small Caps": "Male črke",
   "Reset": "Ponastavi",
diff --git a/media/player/videojs/videojs/lang/sl.json b/media/player/videojs/videojs/lang/sl.json
index 86b173108ac8..6a705d411cf0 100644
--- a/media/player/videojs/videojs/lang/sl.json
+++ b/media/player/videojs/videojs/lang/sl.json
@@ -68,7 +68,7 @@
   "Raised": "Dvignjeno",
   "Depressed": "Vtisnjeno",
   "Uniform": "Enakomerno",
-  "Dropshadow": "S senco",
+  "Drop shadow": "S senco",
   "Font Family": "Družina pisave",
   "Small Caps": "Male črke",
   "Reset": "Ponastavi",
diff --git a/media/player/videojs/videojs/lang/sv.js b/media/player/videojs/videojs/lang/sv.js
index 6e00283ab466..8ce24f208d01 100644
--- a/media/player/videojs/videojs/lang/sv.js
+++ b/media/player/videojs/videojs/lang/sv.js
@@ -21,7 +21,7 @@ videojs.addLanguage('sv', {
   "Depressed": "Deprimerad",
   "Descriptions": "Beskrivningar",
   "Done": "Klar",
-  "Dropshadow": "DropSkugga",
+  "Drop shadow": "DropSkugga",
   "Duration": "Total tid",
   "End of dialog window.": "Slutet av dialogfönster.",
   "Font Family": "Typsnittsfamilj",
diff --git a/media/player/videojs/videojs/lang/sv.json b/media/player/videojs/videojs/lang/sv.json
index e243872755ff..889269c7ae89 100644
--- a/media/player/videojs/videojs/lang/sv.json
+++ b/media/player/videojs/videojs/lang/sv.json
@@ -21,7 +21,7 @@
   "Depressed": "Deprimerad",
   "Descriptions": "Beskrivningar",
   "Done": "Klar",
-  "Dropshadow": "DropSkugga",
+  "Drop shadow": "DropSkugga",
   "Duration": "Total tid",
   "End of dialog window.": "Slutet av dialogfönster.",
   "Font Family": "Typsnittsfamilj",
diff --git a/media/player/videojs/videojs/lang/te.js b/media/player/videojs/videojs/lang/te.js
index 9b5c9b822ead..1b2db3360138 100644
--- a/media/player/videojs/videojs/lang/te.js
+++ b/media/player/videojs/videojs/lang/te.js
@@ -68,7 +68,7 @@ videojs.addLanguage('te', {
   "Raised": "పెంచబడింది",
   "Depressed": "అణగారిన",
   "Uniform": "ఏకరీతి",
-  "Dropshadow": "డ్రాప్‌షాడో",
+  "Drop shadow": "డ్రాప్‌షాడో",
   "Font Family": "ఫాంట్ కుటుంబం",
   "Proportional Sans-Serif": "ప్రొపోర్షన్ సాన్స్-సెరిఫ్",
   "Monospace Sans-Serif": "మోనోస్పేస్ సాన్స్-సెరిఫ్",
diff --git a/media/player/videojs/videojs/lang/te.json b/media/player/videojs/videojs/lang/te.json
index 4c84f5da753a..39de708346f8 100644
--- a/media/player/videojs/videojs/lang/te.json
+++ b/media/player/videojs/videojs/lang/te.json
@@ -68,7 +68,7 @@
   "Raised": "పెంచబడింది",
   "Depressed": "అణగారిన",
   "Uniform": "ఏకరీతి",
-  "Dropshadow": "డ్రాప్‌షాడో",
+  "Drop shadow": "డ్రాప్‌షాడో",
   "Font Family": "ఫాంట్ కుటుంబం",
   "Proportional Sans-Serif": "ప్రొపోర్షన్ సాన్స్-సెరిఫ్",
   "Monospace Sans-Serif": "మోనోస్పేస్ సాన్స్-సెరిఫ్",
diff --git a/media/player/videojs/videojs/lang/th.js b/media/player/videojs/videojs/lang/th.js
index e730b3100093..44dbdea22e36 100644
--- a/media/player/videojs/videojs/lang/th.js
+++ b/media/player/videojs/videojs/lang/th.js
@@ -68,7 +68,7 @@ videojs.addLanguage('th', {
   "Raised": "ยกขึ้น",
   "Depressed": "ปล่อยออก",
   "Uniform": "รูปแบบ",
-  "Dropshadow": "เพิ่มเงา",
+  "Drop shadow": "เพิ่มเงา",
   "Font Family": "ตระกูลแบบอักษร",
   "Proportional Sans-Serif": "Sans-Serif ตามสัดส่วน",
   "Monospace Sans-Serif": "Sans-Serif ช่องว่างเดี่ยว",
diff --git a/media/player/videojs/videojs/lang/th.json b/media/player/videojs/videojs/lang/th.json
index 0219842481e9..fd97e087c8f5 100644
--- a/media/player/videojs/videojs/lang/th.json
+++ b/media/player/videojs/videojs/lang/th.json
@@ -68,7 +68,7 @@
   "Raised": "ยกขึ้น",
   "Depressed": "ปล่อยออก",
   "Uniform": "รูปแบบ",
-  "Dropshadow": "เพิ่มเงา",
+  "Drop shadow": "เพิ่มเงา",
   "Font Family": "ตระกูลแบบอักษร",
   "Proportional Sans-Serif": "Sans-Serif ตามสัดส่วน",
   "Monospace Sans-Serif": "Sans-Serif ช่องว่างเดี่ยว",
diff --git a/media/player/videojs/videojs/lang/tr.js b/media/player/videojs/videojs/lang/tr.js
index 0b367bbafd2d..c5b74253a777 100644
--- a/media/player/videojs/videojs/lang/tr.js
+++ b/media/player/videojs/videojs/lang/tr.js
@@ -68,7 +68,7 @@ videojs.addLanguage('tr', {
   "Raised": "Kabarık",
   "Depressed": "Yassı",
   "Uniform": "Düz",
-  "Dropshadow": "Gölgeli",
+  "Drop shadow": "Gölgeli",
   "Font Family": "Yazı Tipi",
   "Proportional Sans-Serif": "Orantılı Sans-Serif",
   "Monospace Sans-Serif": "Eşaralıklı Sans-Serif",
diff --git a/media/player/videojs/videojs/lang/tr.json b/media/player/videojs/videojs/lang/tr.json
index 141776a69c41..352f5a96beda 100644
--- a/media/player/videojs/videojs/lang/tr.json
+++ b/media/player/videojs/videojs/lang/tr.json
@@ -68,7 +68,7 @@
   "Raised": "Kabarık",
   "Depressed": "Yassı",
   "Uniform": "Düz",
-  "Dropshadow": "Gölgeli",
+  "Drop shadow": "Gölgeli",
   "Font Family": "Yazı Tipi",
   "Proportional Sans-Serif": "Orantılı Sans-Serif",
   "Monospace Sans-Serif": "Eşaralıklı Sans-Serif",
diff --git a/media/player/videojs/videojs/lang/zh-Hant.js b/media/player/videojs/videojs/lang/zh-Hant.js
index a651449f81f6..41221e92200e 100644
--- a/media/player/videojs/videojs/lang/zh-Hant.js
+++ b/media/player/videojs/videojs/lang/zh-Hant.js
@@ -11,7 +11,7 @@ videojs.addLanguage('zh-Hant', {
   "Fullscreen": "全螢幕",
   "Exit Fullscreen": "退出全螢幕",
   "Picture-in-Picture": "子母畫面",
-  "Exit Picture-in-Picture": "退出子母畫面",
+  "Exit Picture-in-Picture": "離開子母畫面",
   "Mute": "靜音",
   "Unmute": "開啟音效",
   "Playback Rate": " 播放速率",
@@ -67,7 +67,7 @@ videojs.addLanguage('zh-Hant', {
   "Raised": "浮雕",
   "Depressed": "壓低",
   "Uniform": "均勻",
-  "Dropshadow": "下陰影",
+  "Drop shadow": "下陰影",
   "Font Family": "字型系列",
   "Proportional Sans-Serif": "調和間距無襯線字型",
   "Monospace Sans-Serif": "等寬無襯線字型",
@@ -86,7 +86,7 @@ videojs.addLanguage('zh-Hant', {
   "Seek to live, currently playing live": "快轉至直播，目前為現場畫面",
   "progress bar timing: currentTime={1} duration={2}": "{1}/{2}",
   "{1} is loading.": "{1} 正在載入。",
-  "No content": "無內容",
+  "No content": "沒有內容",
   "Color": "顏色",
   "Opacity": "不透明度",
   "Text Background": "文字背景",
diff --git a/media/player/videojs/videojs/lang/zh-Hant.json b/media/player/videojs/videojs/lang/zh-Hant.json
index 86892e476864..335837d64601 100644
--- a/media/player/videojs/videojs/lang/zh-Hant.json
+++ b/media/player/videojs/videojs/lang/zh-Hant.json
@@ -67,7 +67,7 @@
   "Raised": "浮雕",
   "Depressed": "壓低",
   "Uniform": "均勻",
-  "Dropshadow": "下陰影",
+  "Drop shadow": "下陰影",
   "Font Family": "字型系列",
   "Proportional Sans-Serif": "調和間距無襯線字型",
   "Monospace Sans-Serif": "等寬無襯線字型",
@@ -86,7 +86,9 @@
   "Seek to live, currently playing live": "快轉至直播，目前為現場畫面",
   "progress bar timing: currentTime={1} duration={2}": "{1}/{2}",
   "{1} is loading.": "{1} 正在載入。",
-  "No content": "無內容",
+  "Exit Picture-in-Picture": "離開子母畫面",
+  "Picture-in-Picture": "子母畫面",
+  "No content": "沒有內容",
   "Color": "顏色",
   "Opacity": "不透明度",
   "Text Background": "文字背景",
diff --git a/media/player/videojs/videojs/lang/zh-TW.js b/media/player/videojs/videojs/lang/zh-TW.js
index 8d932d087a90..41b736e9b558 100644
--- a/media/player/videojs/videojs/lang/zh-TW.js
+++ b/media/player/videojs/videojs/lang/zh-TW.js
@@ -11,7 +11,7 @@ videojs.addLanguage('zh-TW', {
   "Fullscreen": "全螢幕",
   "Exit Fullscreen": "退出全螢幕",
   "Picture-in-Picture": "子母畫面",
-  "Exit Picture-in-Picture": "退出子母畫面",
+  "Exit Picture-in-Picture": "離開子母畫面",
   "Mute": "靜音",
   "Unmute": "開啟音效",
   "Playback Rate": " 播放速率",
@@ -67,7 +67,7 @@ videojs.addLanguage('zh-TW', {
   "Raised": "浮雕",
   "Depressed": "壓低",
   "Uniform": "均勻",
-  "Dropshadow": "下陰影",
+  "Drop shadow": "下陰影",
   "Font Family": "字型系列",
   "Proportional Sans-Serif": "調和間距無襯線字型",
   "Monospace Sans-Serif": "等寬無襯線字型",
@@ -86,7 +86,7 @@ videojs.addLanguage('zh-TW', {
   "Seek to live, currently playing live": "快轉至直播，目前為現場畫面",
   "progress bar timing: currentTime={1} duration={2}": "{1}/{2}",
   "{1} is loading.": "{1} 正在載入。",
-  "No content": "無內容",
+  "No content": "沒有內容",
   "Color": "顏色",
   "Opacity": "不透明度",
   "Text Background": "文字背景",
diff --git a/media/player/videojs/videojs/lang/zh-TW.json b/media/player/videojs/videojs/lang/zh-TW.json
index 86892e476864..335837d64601 100644
--- a/media/player/videojs/videojs/lang/zh-TW.json
+++ b/media/player/videojs/videojs/lang/zh-TW.json
@@ -67,7 +67,7 @@
   "Raised": "浮雕",
   "Depressed": "壓低",
   "Uniform": "均勻",
-  "Dropshadow": "下陰影",
+  "Drop shadow": "下陰影",
   "Font Family": "字型系列",
   "Proportional Sans-Serif": "調和間距無襯線字型",
   "Monospace Sans-Serif": "等寬無襯線字型",
@@ -86,7 +86,9 @@
   "Seek to live, currently playing live": "快轉至直播，目前為現場畫面",
   "progress bar timing: currentTime={1} duration={2}": "{1}/{2}",
   "{1} is loading.": "{1} 正在載入。",
-  "No content": "無內容",
+  "Exit Picture-in-Picture": "離開子母畫面",
+  "Picture-in-Picture": "子母畫面",
+  "No content": "沒有內容",
   "Color": "顏色",
   "Opacity": "不透明度",
   "Text Background": "文字背景",
diff --git a/mod/assign/feedback/editpdf/fpdi/FpdfTpl.php b/mod/assign/feedback/editpdf/fpdi/FpdfTpl.php
index 4b93f5396f22..0f3a6fc7cc82 100644
--- a/mod/assign/feedback/editpdf/fpdi/FpdfTpl.php
+++ b/mod/assign/feedback/editpdf/fpdi/FpdfTpl.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/FpdfTplTrait.php b/mod/assign/feedback/editpdf/fpdi/FpdfTplTrait.php
index d2da97c0f822..2da9d55f3caf 100644
--- a/mod/assign/feedback/editpdf/fpdi/FpdfTplTrait.php
+++ b/mod/assign/feedback/editpdf/fpdi/FpdfTplTrait.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
@@ -13,7 +13,7 @@
 /**
  * Trait FpdfTplTrait
  *
- * This class adds a templating feature to tFPDF.
+ * This trait adds a templating feature to FPDF and tFPDF.
  */
 trait FpdfTplTrait
 {
@@ -234,7 +234,9 @@ public function beginTemplate($width = null, $height = null, $groupXObject = fal
                 'lMargin' => $this->lMargin,
                 'rMargin' => $this->rMargin,
                 'h' => $this->h,
+                'hPt' => $this->hPt,
                 'w' => $this->w,
+                'wPt' => $this->wPt,
                 'FontFamily' => $this->FontFamily,
                 'FontStyle' => $this->FontStyle,
                 'FontSizePt' => $this->FontSizePt,
@@ -251,7 +253,9 @@ public function beginTemplate($width = null, $height = null, $groupXObject = fal
         $this->currentTemplateId = $templateId;
 
         $this->h = $height;
+        $this->hPt = $height / $this->k;
         $this->w = $width;
+        $this->wPt = $width / $this->k;
 
         $this->SetXY($this->lMargin, $this->tMargin);
         $this->SetRightMargin($this->w - $width + $this->rMargin);
@@ -279,7 +283,9 @@ public function endTemplate()
         $this->lMargin = $state['lMargin'];
         $this->rMargin = $state['rMargin'];
         $this->h = $state['h'];
+        $this->hPt = $state['hPt'];
         $this->w = $state['w'];
+        $this->wPt = $state['wPt'];
         $this->SetAutoPageBreak($state['AutoPageBreak'], $state['bMargin']);
 
         $this->FontFamily = $state['FontFamily'];
@@ -406,9 +412,6 @@ public function SetFontSize($size)
         }
     }
 
-    /**
-     * @inheritdoc
-     */
     protected function _putimages()
     {
         parent::_putimages();
diff --git a/mod/assign/feedback/editpdf/fpdi/FpdfTrait.php b/mod/assign/feedback/editpdf/fpdi/FpdfTrait.php
new file mode 100644
index 000000000000..67fa561c456a
--- /dev/null
+++ b/mod/assign/feedback/editpdf/fpdi/FpdfTrait.php
@@ -0,0 +1,192 @@
+<?php
+
+/**
+ * This file is part of FPDI
+ *
+ * @package   setasign\Fpdi
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @license   http://opensource.org/licenses/mit-license The MIT License
+ */
+
+namespace setasign\Fpdi;
+
+use setasign\Fpdi\PdfParser\CrossReference\CrossReferenceException;
+use setasign\Fpdi\PdfParser\PdfParserException;
+use setasign\Fpdi\PdfParser\Type\PdfIndirectObject;
+use setasign\Fpdi\PdfParser\Type\PdfNull;
+use setasign\Fpdi\PdfParser\Type\PdfType;
+
+/**
+ * This trait is used for the implementation of FPDI in FPDF and tFPDF.
+ */
+trait FpdfTrait
+{
+    protected function _enddoc()
+    {
+        parent::_enddoc();
+        $this->cleanUp();
+    }
+
+    /**
+     * Draws an imported page or a template onto the page or another template.
+     *
+     * Give only one of the size parameters (width, height) to calculate the other one automatically in view to the
+     * aspect ratio.
+     *
+     * @param mixed $tpl The template id
+     * @param float|int|array $x The abscissa of upper-left corner. Alternatively you could use an assoc array
+     *                           with the keys "x", "y", "width", "height", "adjustPageSize".
+     * @param float|int $y The ordinate of upper-left corner.
+     * @param float|int|null $width The width.
+     * @param float|int|null $height The height.
+     * @param bool $adjustPageSize
+     * @return array The size
+     * @see Fpdi::getTemplateSize()
+     */
+    public function useTemplate($tpl, $x = 0, $y = 0, $width = null, $height = null, $adjustPageSize = false)
+    {
+        if (isset($this->importedPages[$tpl])) {
+            $size = $this->useImportedPage($tpl, $x, $y, $width, $height, $adjustPageSize);
+            if ($this->currentTemplateId !== null) {
+                $this->templates[$this->currentTemplateId]['resources']['templates']['importedPages'][$tpl] = $tpl;
+            }
+            return $size;
+        }
+
+        return parent::useTemplate($tpl, $x, $y, $width, $height, $adjustPageSize);
+    }
+
+    /**
+     * Get the size of an imported page or template.
+     *
+     * Give only one of the size parameters (width, height) to calculate the other one automatically in view to the
+     * aspect ratio.
+     *
+     * @param mixed $tpl The template id
+     * @param float|int|null $width The width.
+     * @param float|int|null $height The height.
+     * @return array|bool An array with following keys: width, height, 0 (=width), 1 (=height), orientation (L or P)
+     */
+    public function getTemplateSize($tpl, $width = null, $height = null)
+    {
+        $size = parent::getTemplateSize($tpl, $width, $height);
+        if ($size === false) {
+            return $this->getImportedPageSize($tpl, $width, $height);
+        }
+
+        return $size;
+    }
+
+    /**
+     * @throws CrossReferenceException
+     * @throws PdfParserException
+     */
+    protected function _putimages()
+    {
+        $this->currentReaderId = null;
+        parent::_putimages();
+
+        foreach ($this->importedPages as $key => $pageData) {
+            $this->_newobj();
+            $this->importedPages[$key]['objectNumber'] = $this->n;
+            $this->currentReaderId = $pageData['readerId'];
+            $this->writePdfType($pageData['stream']);
+            $this->_put('endobj');
+        }
+
+        foreach (\array_keys($this->readers) as $readerId) {
+            $parser = $this->getPdfReader($readerId)->getParser();
+            $this->currentReaderId = $readerId;
+
+            while (($objectNumber = \array_pop($this->objectsToCopy[$readerId])) !== null) {
+                try {
+                    $object = $parser->getIndirectObject($objectNumber);
+                } catch (CrossReferenceException $e) {
+                    if ($e->getCode() === CrossReferenceException::OBJECT_NOT_FOUND) {
+                        $object = PdfIndirectObject::create($objectNumber, 0, new PdfNull());
+                    } else {
+                        throw $e;
+                    }
+                }
+
+                $this->writePdfType($object);
+            }
+        }
+
+        $this->currentReaderId = null;
+    }
+
+    /**
+     * @inheritdoc
+     */
+    protected function _putxobjectdict()
+    {
+        foreach ($this->importedPages as $pageData) {
+            $this->_put('/' . $pageData['id'] . ' ' . $pageData['objectNumber'] . ' 0 R');
+        }
+
+        parent::_putxobjectdict();
+    }
+
+    /**
+     * @param int $n
+     * @return void
+     * @throws PdfParser\Type\PdfTypeException
+     */
+    protected function _putlinks($n)
+    {
+        foreach ($this->PageLinks[$n] as $pl) {
+            $this->_newobj();
+            $rect = sprintf('%.2F %.2F %.2F %.2F', $pl[0], $pl[1], $pl[0] + $pl[2], $pl[1] - $pl[3]);
+            $this->_put('<</Type /Annot /Subtype /Link /Rect [' . $rect . ']', false);
+            if (is_string($pl[4])) {
+                $this->_put('/A <</S /URI /URI ' . $this->_textstring($pl[4]) . '>>');
+                if (isset($pl['importedLink'])) {
+                    $values = $pl['importedLink']['pdfObject']->value;
+
+                    foreach ($values as $name => $entry) {
+                        $this->_put('/' . $name . ' ', false);
+                        $this->writePdfType($entry);
+                    }
+
+                    if (isset($pl['quadPoints'])) {
+                        $s = '/QuadPoints[';
+                        foreach ($pl['quadPoints'] as $value) {
+                            $s .= sprintf('%.2F ', $value);
+                        }
+                        $s .= ']';
+                        $this->_put($s);
+                    }
+                } else {
+                    $this->_put('/Border [0 0 0]', false);
+                }
+                $this->_put('>>');
+            } else {
+                $this->_put('/Border [0 0 0] ', false);
+                $l = $this->links[$pl[4]];
+                if (isset($this->PageInfo[$l[0]]['size'])) {
+                    $h = $this->PageInfo[$l[0]]['size'][1];
+                } else {
+                    $h = ($this->DefOrientation === 'P')
+                        ? $this->DefPageSize[1] * $this->k
+                        : $this->DefPageSize[0] * $this->k;
+                }
+                $this->_put(sprintf(
+                    '/Dest [%d 0 R /XYZ 0 %.2F null]>>',
+                    $this->PageInfo[$l[0]]['n'],
+                    $h - $l[1] * $this->k
+                ));
+            }
+            $this->_put('endobj');
+        }
+    }
+
+    protected function _put($s, $newLine = true)
+    {
+        if ($newLine) {
+            $this->buffer .= $s . "\n";
+        } else {
+            $this->buffer .= $s;
+        }
+    }
+}
diff --git a/mod/assign/feedback/editpdf/fpdi/Fpdi.php b/mod/assign/feedback/editpdf/fpdi/Fpdi.php
index dc46bb164405..fd158a6e6837 100644
--- a/mod/assign/feedback/editpdf/fpdi/Fpdi.php
+++ b/mod/assign/feedback/editpdf/fpdi/Fpdi.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
@@ -23,131 +23,12 @@
 class Fpdi extends FpdfTpl
 {
     use FpdiTrait;
+    use FpdfTrait;
 
     /**
      * FPDI version
      *
      * @string
      */
-    const VERSION = '2.3.7';
-
-    protected function _enddoc()
-    {
-        parent::_enddoc();
-        $this->cleanUp();
-    }
-
-    /**
-     * Draws an imported page or a template onto the page or another template.
-     *
-     * Give only one of the size parameters (width, height) to calculate the other one automatically in view to the
-     * aspect ratio.
-     *
-     * @param mixed $tpl The template id
-     * @param float|int|array $x The abscissa of upper-left corner. Alternatively you could use an assoc array
-     *                           with the keys "x", "y", "width", "height", "adjustPageSize".
-     * @param float|int $y The ordinate of upper-left corner.
-     * @param float|int|null $width The width.
-     * @param float|int|null $height The height.
-     * @param bool $adjustPageSize
-     * @return array The size
-     * @see Fpdi::getTemplateSize()
-     */
-    public function useTemplate($tpl, $x = 0, $y = 0, $width = null, $height = null, $adjustPageSize = false)
-    {
-        if (isset($this->importedPages[$tpl])) {
-            $size = $this->useImportedPage($tpl, $x, $y, $width, $height, $adjustPageSize);
-            if ($this->currentTemplateId !== null) {
-                $this->templates[$this->currentTemplateId]['resources']['templates']['importedPages'][$tpl] = $tpl;
-            }
-            return $size;
-        }
-
-        return parent::useTemplate($tpl, $x, $y, $width, $height, $adjustPageSize);
-    }
-
-    /**
-     * Get the size of an imported page or template.
-     *
-     * Give only one of the size parameters (width, height) to calculate the other one automatically in view to the
-     * aspect ratio.
-     *
-     * @param mixed $tpl The template id
-     * @param float|int|null $width The width.
-     * @param float|int|null $height The height.
-     * @return array|bool An array with following keys: width, height, 0 (=width), 1 (=height), orientation (L or P)
-     */
-    public function getTemplateSize($tpl, $width = null, $height = null)
-    {
-        $size = parent::getTemplateSize($tpl, $width, $height);
-        if ($size === false) {
-            return $this->getImportedPageSize($tpl, $width, $height);
-        }
-
-        return $size;
-    }
-
-    /**
-     * @inheritdoc
-     * @throws CrossReferenceException
-     * @throws PdfParserException
-     */
-    protected function _putimages()
-    {
-        $this->currentReaderId = null;
-        parent::_putimages();
-
-        foreach ($this->importedPages as $key => $pageData) {
-            $this->_newobj();
-            $this->importedPages[$key]['objectNumber'] = $this->n;
-            $this->currentReaderId = $pageData['readerId'];
-            $this->writePdfType($pageData['stream']);
-            $this->_put('endobj');
-        }
-
-        foreach (\array_keys($this->readers) as $readerId) {
-            $parser = $this->getPdfReader($readerId)->getParser();
-            $this->currentReaderId = $readerId;
-
-            while (($objectNumber = \array_pop($this->objectsToCopy[$readerId])) !== null) {
-                try {
-                    $object = $parser->getIndirectObject($objectNumber);
-                } catch (CrossReferenceException $e) {
-                    if ($e->getCode() === CrossReferenceException::OBJECT_NOT_FOUND) {
-                        $object = PdfIndirectObject::create($objectNumber, 0, new PdfNull());
-                    } else {
-                        throw $e;
-                    }
-                }
-
-                $this->writePdfType($object);
-            }
-        }
-
-        $this->currentReaderId = null;
-    }
-
-    /**
-     * @inheritdoc
-     */
-    protected function _putxobjectdict()
-    {
-        foreach ($this->importedPages as $key => $pageData) {
-            $this->_put('/' . $pageData['id'] . ' ' . $pageData['objectNumber'] . ' 0 R');
-        }
-
-        parent::_putxobjectdict();
-    }
-
-    /**
-     * @inheritdoc
-     */
-    protected function _put($s, $newLine = true)
-    {
-        if ($newLine) {
-            $this->buffer .= $s . "\n";
-        } else {
-            $this->buffer .= $s;
-        }
-    }
+    const VERSION = '2.6.0';
 }
diff --git a/mod/assign/feedback/editpdf/fpdi/FpdiException.php b/mod/assign/feedback/editpdf/fpdi/FpdiException.php
index 228666744105..0414d8bfac11 100644
--- a/mod/assign/feedback/editpdf/fpdi/FpdiException.php
+++ b/mod/assign/feedback/editpdf/fpdi/FpdiException.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/FpdiTrait.php b/mod/assign/feedback/editpdf/fpdi/FpdiTrait.php
index 3b29857b0bad..6d57b995d24b 100644
--- a/mod/assign/feedback/editpdf/fpdi/FpdiTrait.php
+++ b/mod/assign/feedback/editpdf/fpdi/FpdiTrait.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
@@ -29,6 +29,7 @@
 use setasign\Fpdi\PdfParser\Type\PdfToken;
 use setasign\Fpdi\PdfParser\Type\PdfType;
 use setasign\Fpdi\PdfParser\Type\PdfTypeException;
+use setasign\Fpdi\PdfReader\DataStructure\Rectangle;
 use setasign\Fpdi\PdfReader\PageBoundaries;
 use setasign\Fpdi\PdfReader\PdfReader;
 use setasign\Fpdi\PdfReader\PdfReaderException;
@@ -123,17 +124,18 @@ protected function setMinPdfVersion($pdfVersion)
      * Get a new pdf parser instance.
      *
      * @param StreamReader $streamReader
+     * @param array $parserParams Individual parameters passed to the parser instance.
      * @return PdfParser|FpdiPdfParser
      */
-    protected function getPdfParserInstance(StreamReader $streamReader)
+    protected function getPdfParserInstance(StreamReader $streamReader, array $parserParams = [])
     {
-        // note: if you get an exception here - turn off errors/warnings on not found for your autoloader.
+        // note: if you get an exception here - turn off errors/warnings on not found classes for your autoloader.
         // psr-4 (https://www.php-fig.org/psr/psr-4/) says: Autoloader implementations MUST NOT throw
         // exceptions, MUST NOT raise errors of any level, and SHOULD NOT return a value.
         /** @noinspection PhpUndefinedClassInspection */
         if (\class_exists(FpdiPdfParser::class)) {
             /** @noinspection PhpUndefinedClassInspection */
-            return new FpdiPdfParser($streamReader);
+            return new FpdiPdfParser($streamReader, $parserParams);
         }
 
         return new PdfParser($streamReader);
@@ -144,9 +146,10 @@ protected function getPdfParserInstance(StreamReader $streamReader)
      *
      * @param string|resource|PdfReader|StreamReader $file An open file descriptor, a path to a file, a PdfReader
      *                                                     instance or a StreamReader instance.
+     * @param array $parserParams Individual parameters passed to the parser instance.
      * @return string
      */
-    protected function getPdfReaderId($file)
+    protected function getPdfReaderId($file, array $parserParams = [])
     {
         if (\is_resource($file)) {
             $id = (string) $file;
@@ -177,7 +180,7 @@ protected function getPdfReaderId($file)
             $streamReader = $file;
         }
 
-        $reader = new PdfReader($this->getPdfParserInstance($streamReader));
+        $reader = new PdfReader($this->getPdfParserInstance($streamReader, $parserParams));
         /** @noinspection OffsetOperationsInspection */
         $this->readers[$id] = $reader;
 
@@ -210,7 +213,24 @@ protected function getPdfReader($id)
      */
     public function setSourceFile($file)
     {
-        $this->currentReaderId = $this->getPdfReaderId($file);
+        return $this->setSourceFileWithParserParams($file);
+    }
+
+    /**
+     * Set the source PDF file with parameters which are passed to the parser instance.
+     *
+     * This method allows us to pass e.g. authentication information to the parser instance.
+     *
+     * @param string|resource|StreamReader $file Path to the file or a stream resource or a StreamReader instance.
+     * @param array $parserParams Individual parameters passed to the parser instance.
+     * @return int The page count of the PDF document.
+     * @throws CrossReferenceException
+     * @throws PdfParserException
+     * @throws PdfTypeException
+     */
+    public function setSourceFileWithParserParams($file, array $parserParams = [])
+    {
+        $this->currentReaderId = $this->getPdfReaderId($file, $parserParams);
         $this->objectsToCopy[$this->currentReaderId] = [];
 
         $reader = $this->getPdfReader($this->currentReaderId);
@@ -225,6 +245,7 @@ public function setSourceFile($file)
      * @param int $pageNumber The page number.
      * @param string $box The page boundary to import. Default set to PageBoundaries::CROP_BOX.
      * @param bool $groupXObject Define the form XObject as a group XObject to support transparency (if used).
+     * @param bool $importExternalLinks Define whether external links are imported or not.
      * @return string A unique string identifying the imported page.
      * @throws CrossReferenceException
      * @throws FilterException
@@ -233,16 +254,20 @@ public function setSourceFile($file)
      * @throws PdfReaderException
      * @see PageBoundaries
      */
-    public function importPage($pageNumber, $box = PageBoundaries::CROP_BOX, $groupXObject = true)
-    {
-        if (null === $this->currentReaderId) {
+    public function importPage(
+        $pageNumber,
+        $box = PageBoundaries::CROP_BOX,
+        $groupXObject = true,
+        $importExternalLinks = false
+    ) {
+        if ($this->currentReaderId === null) {
             throw new \BadMethodCallException('No reader initiated. Call setSourceFile() first.');
         }
 
         $pageId = $this->currentReaderId;
 
         $pageNumber = (int)$pageNumber;
-        $pageId .= '|' . $pageNumber . '|' . ($groupXObject ? '1' : '0');
+        $pageId .= '|' . $pageNumber . '|' . ($groupXObject ? '1' : '0') . '|' . ($importExternalLinks ? '1' : '0');
 
         // for backwards compatibility with FPDI 1
         $box = \ltrim($box, '/');
@@ -378,13 +403,19 @@ public function importPage($pageNumber, $box = PageBoundaries::CROP_BOX, $groupX
             $stream = PdfStream::create($dict, '');
         }
 
+        $externalLinks = [];
+        if ($importExternalLinks) {
+            $externalLinks = $page->getExternalLinks($box);
+        }
+
         $this->importedPages[$pageId] = [
             'objectNumber' => null,
             'readerId' => $this->currentReaderId,
             'id' => 'TPL' . $this->getNextTemplateId(),
             'width' => $width / $this->k,
             'height' => $height / $this->k,
-            'stream' => $stream
+            'stream' => $stream,
+            'externalLinks' => $externalLinks
         ];
 
         return $pageId;
@@ -430,21 +461,79 @@ public function useImportedPage($pageId, $x = 0, $y = 0, $width = null, $height
             $this->setPageFormat($newSize, $newSize['orientation']);
         }
 
+        $scaleX = ($newSize['width'] / $originalSize['width']);
+        $scaleY = ($newSize['height'] / $originalSize['height']);
+        $xPt = $x * $this->k;
+        $yPt = $y * $this->k;
+        $newHeightPt = $newSize['height'] * $this->k;
+
         $this->_out(
             // reset standard values, translate and scale
             \sprintf(
                 'q 0 J 1 w 0 j 0 G 0 g %.4F 0 0 %.4F %.4F %.4F cm /%s Do Q',
-                ($newSize['width'] / $originalSize['width']),
-                ($newSize['height'] / $originalSize['height']),
-                $x * $this->k,
-                ($this->h - $y - $newSize['height']) * $this->k,
+                $scaleX,
+                $scaleY,
+                $xPt,
+                $this->hPt - $yPt - $newHeightPt,
                 $importedPage['id']
             )
         );
 
+        if (count($importedPage['externalLinks']) > 0) {
+            foreach ($importedPage['externalLinks'] as $externalLink) {
+                // mPDF uses also 'externalLinks' but doesn't come with a rect-value
+                if (!isset($externalLink['rect'])) {
+                    continue;
+                }
+
+                /** @var Rectangle $rect */
+                $rect = $externalLink['rect'];
+                $this->Link(
+                    $x + $rect->getLlx() / $this->k * $scaleX,
+                    $y + $newSize['height'] - ($rect->getLly() + $rect->getHeight()) / $this->k * $scaleY,
+                    $rect->getWidth() / $this->k * $scaleX,
+                    $rect->getHeight()  / $this->k * $scaleY,
+                    $externalLink['uri']
+                );
+
+                $this->adjustLastLink($externalLink, $xPt, $scaleX, $yPt, $newHeightPt, $scaleY, $importedPage);
+            }
+        }
+
         return $newSize;
     }
 
+    /**
+     * This method will add additional data to the last created link/annotation.
+     *
+     * It is separated because TCPDF uses its own logic to handle link annotations.
+     * This method is overwritten in the TCPDF implementation.
+     *
+     * @param array $externalLink
+     * @param float|int $xPt
+     * @param float|int $scaleX
+     * @param float|int $yPt
+     * @param float|int $newHeightPt
+     * @param float|int $scaleY
+     * @param array $importedPage
+     * @return void
+     */
+    protected function adjustLastLink($externalLink, $xPt, $scaleX, $yPt, $newHeightPt, $scaleY, $importedPage)
+    {
+        // let's create a relation of the newly created link to the data of the external link
+        $lastLink = count($this->PageLinks[$this->page]);
+        $this->PageLinks[$this->page][$lastLink - 1]['importedLink'] = $externalLink;
+        if (count($externalLink['quadPoints']) > 0) {
+            $quadPoints = [];
+            for ($i = 0, $n = count($externalLink['quadPoints']); $i < $n; $i += 2) {
+                $quadPoints[] = $xPt + $externalLink['quadPoints'][$i] * $scaleX;
+                $quadPoints[] = $this->hPt - $yPt - $newHeightPt + $externalLink['quadPoints'][$i + 1] * $scaleY;
+            }
+
+            $this->PageLinks[$this->page][$lastLink - 1]['quadPoints'] = $quadPoints;
+        }
+    }
+
     /**
      * Get the size of an imported page.
      *
@@ -507,7 +596,7 @@ protected function writePdfType(PdfType $value)
         } elseif ($value instanceof PdfString) {
             $this->_put('(' . $value->value . ')', false);
         } elseif ($value instanceof PdfHexString) {
-            $this->_put('<' . $value->value . '>');
+            $this->_put('<' . $value->value . '>', false);
         } elseif ($value instanceof PdfBoolean) {
             $this->_put($value->value ? 'true ' : 'false ', false);
         } elseif ($value instanceof PdfArray) {
@@ -526,11 +615,8 @@ protected function writePdfType(PdfType $value)
         } elseif ($value instanceof PdfToken) {
             $this->_put($value->value);
         } elseif ($value instanceof PdfNull) {
-            $this->_put('null ');
+            $this->_put('null ', false);
         } elseif ($value instanceof PdfStream) {
-            /**
-             * @var $value PdfStream
-             */
             $this->writePdfType($value->value);
             $this->_put('stream');
             $this->_put($value->getStream());
@@ -547,12 +633,22 @@ protected function writePdfType(PdfType $value)
 
             $this->_put($this->objectMap[$this->currentReaderId][$value->value] . ' 0 R ', false);
         } elseif ($value instanceof PdfIndirectObject) {
-            /**
-             * @var PdfIndirectObject $value
-             */
             $n = $this->objectMap[$this->currentReaderId][$value->objectNumber];
             $this->_newobj($n);
             $this->writePdfType($value->value);
+
+            // add newline before "endobj" for all objects in view to PDF/A conformance
+            if (
+                !(
+                    ($value->value instanceof PdfArray) ||
+                    ($value->value instanceof PdfDictionary) ||
+                    ($value->value instanceof PdfToken) ||
+                    ($value->value instanceof PdfStream)
+                )
+            ) {
+                $this->_put("\n", false);
+            }
+
             $this->_put('endobj');
         }
     }
diff --git a/mod/assign/feedback/editpdf/fpdi/GraphicsState.php b/mod/assign/feedback/editpdf/fpdi/GraphicsState.php
new file mode 100644
index 000000000000..27feafba765c
--- /dev/null
+++ b/mod/assign/feedback/editpdf/fpdi/GraphicsState.php
@@ -0,0 +1,97 @@
+<?php
+
+/**
+ * This file is part of FPDI
+ *
+ * @package   setasign\Fpdi
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @license   http://opensource.org/licenses/mit-license The MIT License
+ */
+
+namespace setasign\Fpdi;
+
+use setasign\Fpdi\Math\Matrix;
+use setasign\Fpdi\Math\Vector;
+
+/**
+ * A simple graphic state class which holds the current transformation matrix.
+ */
+class GraphicsState
+{
+    /**
+     * @var Matrix
+     */
+    protected $ctm;
+
+    /**
+     * @param Matrix|null $ctm
+     */
+    public function __construct(Matrix $ctm = null)
+    {
+        if ($ctm === null) {
+            $ctm = new Matrix();
+        }
+
+        $this->ctm = $ctm;
+    }
+
+    /**
+     * @param Matrix $matrix
+     * @return $this
+     */
+    public function add(Matrix $matrix)
+    {
+        $this->ctm = $matrix->multiply($this->ctm);
+        return $this;
+    }
+
+    /**
+     * @param int|float $x
+     * @param int|float $y
+     * @param int|float $angle
+     * @return $this
+     */
+    public function rotate($x, $y, $angle)
+    {
+        if (abs($angle) < 1e-5) {
+            return  $this;
+        }
+
+        $angle = deg2rad($angle);
+        $c = cos($angle);
+        $s = sin($angle);
+
+        $this->add(new Matrix($c, $s, -$s, $c, $x, $y));
+
+        return $this->translate(-$x, -$y);
+    }
+
+    /**
+     * @param int|float $shiftX
+     * @param int|float $shiftY
+     * @return $this
+     */
+    public function translate($shiftX, $shiftY)
+    {
+        return $this->add(new Matrix(1, 0, 0, 1, $shiftX, $shiftY));
+    }
+
+    /**
+     * @param int|float $scaleX
+     * @param int|float $scaleY
+     * @return $this
+     */
+    public function scale($scaleX, $scaleY)
+    {
+        return $this->add(new Matrix($scaleX, 0, 0, $scaleY, 0, 0));
+    }
+
+    /**
+     * @param Vector $vector
+     * @return Vector
+     */
+    public function toUserSpace(Vector $vector)
+    {
+        return $vector->multiplyWithMatrix($this->ctm);
+    }
+}
diff --git a/mod/assign/feedback/editpdf/fpdi/Math/Matrix.php b/mod/assign/feedback/editpdf/fpdi/Math/Matrix.php
new file mode 100644
index 000000000000..662a5a2b36ae
--- /dev/null
+++ b/mod/assign/feedback/editpdf/fpdi/Math/Matrix.php
@@ -0,0 +1,116 @@
+<?php
+
+/**
+ * This file is part of FPDI
+ *
+ * @package   setasign\Fpdi
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @license   http://opensource.org/licenses/mit-license The MIT License
+ */
+
+namespace setasign\Fpdi\Math;
+
+/**
+ * A simple 2D-Matrix class
+ */
+class Matrix
+{
+    /**
+     * @var float
+     */
+    protected $a;
+
+    /**
+     * @var float
+     */
+    protected $b;
+
+    /**
+     * @var float
+     */
+    protected $c;
+
+    /**
+     * @var float
+     */
+    protected $d;
+
+    /**
+     * @var float
+     */
+    protected $e;
+
+    /**
+     * @var float
+     */
+    protected $f;
+
+    /**
+     * @param int|float $a
+     * @param int|float $b
+     * @param int|float $c
+     * @param int|float $d
+     * @param int|float $e
+     * @param int|float $f
+     */
+    public function __construct($a = 1, $b = 0, $c = 0, $d = 1, $e = 0, $f = 0)
+    {
+        $this->a = (float)$a;
+        $this->b = (float)$b;
+        $this->c = (float)$c;
+        $this->d = (float)$d;
+        $this->e = (float)$e;
+        $this->f = (float)$f;
+    }
+
+    /**
+     * @return float[]
+     */
+    public function getValues()
+    {
+        return [$this->a, $this->b, $this->c, $this->d, $this->e, $this->f];
+    }
+
+    /**
+     * @param Matrix $by
+     * @return Matrix
+     */
+    public function multiply(self $by)
+    {
+        $a =
+            $this->a * $by->a
+            + $this->b * $by->c
+            //+ 0 * $by->e
+        ;
+
+        $b =
+            $this->a * $by->b
+            + $this->b * $by->d
+            //+ 0 * $by->f
+        ;
+
+        $c =
+            $this->c * $by->a
+            + $this->d * $by->c
+            //+ 0 * $by->e
+        ;
+
+        $d =
+            $this->c * $by->b
+            + $this->d * $by->d
+            //+ 0 * $by->f
+        ;
+
+        $e =
+            $this->e * $by->a
+            + $this->f * $by->c
+            + /*1 * */$by->e;
+
+        $f =
+            $this->e * $by->b
+            + $this->f * $by->d
+            + /*1 * */$by->f;
+
+        return new self($a, $b, $c, $d, $e, $f);
+    }
+}
diff --git a/mod/assign/feedback/editpdf/fpdi/Math/Vector.php b/mod/assign/feedback/editpdf/fpdi/Math/Vector.php
new file mode 100644
index 000000000000..df782d487b0c
--- /dev/null
+++ b/mod/assign/feedback/editpdf/fpdi/Math/Vector.php
@@ -0,0 +1,66 @@
+<?php
+
+/**
+ * This file is part of FPDI
+ *
+ * @package   setasign\Fpdi
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @license   http://opensource.org/licenses/mit-license The MIT License
+ */
+
+namespace setasign\Fpdi\Math;
+
+/**
+ * A simple 2D-Vector class
+ */
+class Vector
+{
+    /**
+     * @var float
+     */
+    protected $x;
+
+    /**
+     * @var float
+     */
+    protected $y;
+
+    /**
+     * @param int|float $x
+     * @param int|float $y
+     */
+    public function __construct($x = .0, $y = .0)
+    {
+        $this->x = (float)$x;
+        $this->y = (float)$y;
+    }
+
+    /**
+     * @return float
+     */
+    public function getX()
+    {
+        return $this->x;
+    }
+
+    /**
+     * @return float
+     */
+    public function getY()
+    {
+        return $this->y;
+    }
+
+    /**
+     * @param Matrix $matrix
+     * @return Vector
+     */
+    public function multiplyWithMatrix(Matrix $matrix)
+    {
+        list($a, $b, $c, $d, $e, $f) = $matrix->getValues();
+        $x = $a * $this->x + $c * $this->y + $e;
+        $y = $b * $this->x + $d * $this->y + $f;
+
+        return new self($x, $y);
+    }
+}
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/AbstractReader.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/AbstractReader.php
index b54237bc1d3f..bcf21d68c4b2 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/AbstractReader.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/AbstractReader.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/CrossReference.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/CrossReference.php
index c47e8c4c36f1..7fa146d188c4 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/CrossReference.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/CrossReference.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
@@ -69,7 +69,7 @@ public function __construct(PdfParser $parser, $fileHeaderOffset = 0)
                 // sometimes the file header offset is part of the byte offsets, so let's retry by resetting it to zero.
                 if ($e->getCode() === CrossReferenceException::INVALID_DATA && $this->fileHeaderOffset !== 0) {
                     $this->fileHeaderOffset = 0;
-                    $reader = $this->readXref($offset + $this->fileHeaderOffset);
+                    $reader = $this->readXref($offset);
                 } else {
                     throw $e;
                 }
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/CrossReferenceException.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/CrossReferenceException.php
index 7d88d5d05b56..8a1a589e8f27 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/CrossReferenceException.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/CrossReferenceException.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/FixedReader.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/FixedReader.php
index ed417dff2e6a..8abf7fbc8a8e 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/FixedReader.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/FixedReader.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/LineReader.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/LineReader.php
index 5b67744fd20c..bcbd8e466496 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/LineReader.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/LineReader.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/ReaderInterface.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/ReaderInterface.php
index d2dfdd0c944f..0bdc0ab062d1 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/ReaderInterface.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/CrossReference/ReaderInterface.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/Ascii85.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/Ascii85.php
index 1dc936d7f7b4..1a1882dc6d79 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/Ascii85.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/Ascii85.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/Ascii85Exception.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/Ascii85Exception.php
index f4b675837e47..83a780c87e74 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/Ascii85Exception.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/Ascii85Exception.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/AsciiHex.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/AsciiHex.php
index d0c343681ab7..c3ba800337d5 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/AsciiHex.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/AsciiHex.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/FilterException.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/FilterException.php
index c55a7a82a900..c71ff382d144 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/FilterException.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/FilterException.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/FilterInterface.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/FilterInterface.php
index 370019026d3d..3aa487202d3b 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/FilterInterface.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/FilterInterface.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/Flate.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/Flate.php
index b8f79d1abf07..29f07998c311 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/Flate.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/Flate.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
@@ -44,7 +44,9 @@ public function decode($data)
                 // let's try if the checksum is CRC32
                 $fh = fopen('php://temp', 'w+b');
                 fwrite($fh, "\x1f\x8b\x08\x00\x00\x00\x00\x00" . $oData);
-                stream_filter_append($fh, 'zlib.inflate', STREAM_FILTER_READ, ['window' => 30]);
+                // "window" == 31 -> 16 + (8 to 15): Uses the low 4 bits of the value as the window size logarithm.
+                //                   The input must include a gzip header and trailer (via 16).
+                stream_filter_append($fh, 'zlib.inflate', STREAM_FILTER_READ, ['window' => 31]);
                 fseek($fh, 0);
                 $data = @stream_get_contents($fh);
                 fclose($fh);
@@ -53,21 +55,10 @@ public function decode($data)
                     return $data;
                 }
 
-                // Try this fallback
-                $tries = 0;
+                // Try this fallback (remove the zlib stream header)
+                $data = @(gzinflate(substr($oData, 2)));
 
-                $oDataLen = strlen($oData);
-                while ($tries < 6 && ($data === false || (strlen($data) < ($oDataLen - $tries - 1)))) {
-                    $data = @(gzinflate(substr($oData, $tries)));
-                    $tries++;
-                }
-
-                // let's use this fallback only if the $data is longer than the original data
-                if (strlen($data) > ($oDataLen - $tries - 1)) {
-                    return $data;
-                }
-
-                if (!$data) {
+                if ($data === false) {
                     throw new FlateException(
                         'Error while decompressing stream.',
                         FlateException::DECOMPRESS_ERROR
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/FlateException.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/FlateException.php
index d897ac8ee190..7791ca707149 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/FlateException.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/FlateException.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/Lzw.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/Lzw.php
index 0d6cf385f1bf..f0b16c843fc3 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/Lzw.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/Lzw.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/LzwException.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/LzwException.php
index 6ebad4f45fbc..9f42038e5a33 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/LzwException.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Filter/LzwException.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/PdfParser.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/PdfParser.php
index f7243149b6bd..22a72e639403 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/PdfParser.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/PdfParser.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
@@ -25,6 +25,7 @@
 use setasign\Fpdi\PdfParser\Type\PdfString;
 use setasign\Fpdi\PdfParser\Type\PdfToken;
 use setasign\Fpdi\PdfParser\Type\PdfType;
+use setasign\Fpdi\PdfParser\Type\PdfTypeException;
 
 /**
  * A PDF parser class
@@ -145,7 +146,7 @@ protected function resolveFileHeader()
     }
 
     /**
-     * Get the cross reference instance.
+     * Get the cross-reference instance.
      *
      * @return CrossReference
      * @throws CrossReferenceException
@@ -258,25 +259,25 @@ public function readValue($token = null, $expectedType = null)
         switch ($token) {
             case '(':
                 $this->ensureExpectedType($token, $expectedType);
-                return PdfString::parse($this->streamReader);
+                return $this->parsePdfString();
 
             case '<':
                 if ($this->streamReader->getByte() === '<') {
                     $this->ensureExpectedType('<<', $expectedType);
                     $this->streamReader->addOffset(1);
-                    return PdfDictionary::parse($this->tokenizer, $this->streamReader, $this);
+                    return $this->parsePdfDictionary();
                 }
 
                 $this->ensureExpectedType($token, $expectedType);
-                return PdfHexString::parse($this->streamReader);
+                return $this->parsePdfHexString();
 
             case '/':
                 $this->ensureExpectedType($token, $expectedType);
-                return PdfName::parse($this->tokenizer, $this->streamReader);
+                return $this->parsePdfName();
 
             case '[':
                 $this->ensureExpectedType($token, $expectedType);
-                return PdfArray::parse($this->tokenizer, $this);
+                return $this->parsePdfArray();
 
             default:
                 if (\is_numeric($token)) {
@@ -291,13 +292,7 @@ public function readValue($token = null, $expectedType = null)
                                         );
                                     }
 
-                                    return PdfIndirectObject::parse(
-                                        (int) $token,
-                                        (int) $token2,
-                                        $this,
-                                        $this->tokenizer,
-                                        $this->streamReader
-                                    );
+                                    return $this->parsePdfIndirectObject((int)$token, (int)$token2);
                                 case 'R':
                                     if (
                                         $expectedType !== null &&
@@ -309,7 +304,7 @@ public function readValue($token = null, $expectedType = null)
                                         );
                                     }
 
-                                    return PdfIndirectObjectReference::create((int) $token, (int) $token2);
+                                    return PdfIndirectObjectReference::create((int)$token, (int)$token2);
                             }
 
                             $this->tokenizer->pushStack($token3);
@@ -351,6 +346,65 @@ public function readValue($token = null, $expectedType = null)
         }
     }
 
+    /**
+     * @return PdfString
+     */
+    protected function parsePdfString()
+    {
+        return PdfString::parse($this->streamReader);
+    }
+
+    /**
+     * @return false|PdfHexString
+     */
+    protected function parsePdfHexString()
+    {
+        return PdfHexString::parse($this->streamReader);
+    }
+
+    /**
+     * @return bool|PdfDictionary
+     * @throws PdfTypeException
+     */
+    protected function parsePdfDictionary()
+    {
+        return PdfDictionary::parse($this->tokenizer, $this->streamReader, $this);
+    }
+
+    /**
+     * @return PdfName
+     */
+    protected function parsePdfName()
+    {
+        return PdfName::parse($this->tokenizer, $this->streamReader);
+    }
+
+    /**
+     * @return false|PdfArray
+     * @throws PdfTypeException
+     */
+    protected function parsePdfArray()
+    {
+        return PdfArray::parse($this->tokenizer, $this);
+    }
+
+    /**
+     * @param int $objectNumber
+     * @param int $generationNumber
+     * @return false|PdfIndirectObject
+     * @throws Type\PdfTypeException
+     */
+    protected function parsePdfIndirectObject($objectNumber, $generationNumber)
+    {
+        return PdfIndirectObject::parse(
+            $objectNumber,
+            $generationNumber,
+            $this,
+            $this->tokenizer,
+            $this->streamReader
+        );
+    }
+
     /**
      * Ensures that the token will evaluate to an expected object type (or not).
      *
@@ -359,7 +413,7 @@ public function readValue($token = null, $expectedType = null)
      * @return bool
      * @throws Type\PdfTypeException
      */
-    private function ensureExpectedType($token, $expectedType)
+    protected function ensureExpectedType($token, $expectedType)
     {
         static $mapping = [
             '(' => PdfString::class,
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/PdfParserException.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/PdfParserException.php
index 6d034d86de74..0629d9d8a3eb 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/PdfParserException.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/PdfParserException.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/StreamReader.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/StreamReader.php
index ee40ebbdd71b..a493a85507b2 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/StreamReader.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/StreamReader.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
@@ -113,6 +113,12 @@ public function __construct($stream, $closeStream = false)
             );
         }
 
+        if (fseek($stream, 0) === -1) {
+            throw new \InvalidArgumentException(
+                'Given stream is not seekable!'
+            );
+        }
+
         $this->stream = $stream;
         $this->closeStream = $closeStream;
         $this->reset();
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Tokenizer.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Tokenizer.php
index a3bcd01d9073..5c1ccd897e12 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Tokenizer.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Tokenizer.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfArray.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfArray.php
index 5d0bbbdad310..c7981b63a283 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfArray.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfArray.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
@@ -25,7 +25,7 @@ class PdfArray extends PdfType
      *
      * @param Tokenizer $tokenizer
      * @param PdfParser $parser
-     * @return bool|self
+     * @return false|self
      * @throws PdfTypeException
      */
     public static function parse(Tokenizer $tokenizer, PdfParser $parser)
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfBoolean.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfBoolean.php
index ba4233a69c26..ad7c5d60005e 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfBoolean.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfBoolean.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfDictionary.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfDictionary.php
index 281884245944..8991322c77da 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfDictionary.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfDictionary.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfHexString.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfHexString.php
index 0084ada4d16a..cd9d2b6cf4be 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfHexString.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfHexString.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
@@ -21,7 +21,7 @@ class PdfHexString extends PdfType
      * Parses a hexadecimal string object from the stream reader.
      *
      * @param StreamReader $streamReader
-     * @return bool|self
+     * @return false|self
      */
     public static function parse(StreamReader $streamReader)
     {
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfIndirectObject.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfIndirectObject.php
index 15786d00cb84..72a80e19dbb4 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfIndirectObject.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfIndirectObject.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
@@ -22,17 +22,17 @@ class PdfIndirectObject extends PdfType
     /**
      * Parses an indirect object from a tokenizer, parser and stream-reader.
      *
-     * @param int $objectNumberToken
-     * @param int $objectGenerationNumberToken
+     * @param int $objectNumber
+     * @param int $objectGenerationNumber
      * @param PdfParser $parser
      * @param Tokenizer $tokenizer
      * @param StreamReader $reader
-     * @return bool|self
+     * @return self|false
      * @throws PdfTypeException
      */
     public static function parse(
-        $objectNumberToken,
-        $objectGenerationNumberToken,
+        $objectNumber,
+        $objectGenerationNumber,
         PdfParser $parser,
         Tokenizer $tokenizer,
         StreamReader $reader
@@ -50,8 +50,8 @@ public static function parse(
         }
 
         $v = new self();
-        $v->objectNumber = (int) $objectNumberToken;
-        $v->generationNumber = (int) $objectGenerationNumberToken;
+        $v->objectNumber = (int) $objectNumber;
+        $v->generationNumber = (int) $objectGenerationNumber;
         $v->value = $value;
 
         return $v;
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfIndirectObjectReference.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfIndirectObjectReference.php
index 2725d0c977bc..975e9e8ea8dd 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfIndirectObjectReference.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfIndirectObjectReference.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfName.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfName.php
index 194a13fe3c2b..0fbfe5257355 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfName.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfName.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfNull.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfNull.php
index 0c4c10826abf..483056492bd3 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfNull.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfNull.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfNumeric.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfNumeric.php
index 9de912b20905..454b36864c16 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfNumeric.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfNumeric.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfStream.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfStream.php
index 7adf218cbca3..cfa2cdbfd79e 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfStream.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfStream.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
@@ -213,18 +213,16 @@ protected function extractStream()
     }
 
     /**
-     * Get the unfiltered stream data.
+     * Get all filters defined for this stream.
      *
-     * @return string
-     * @throws FilterException
-     * @throws PdfParserException
+     * @return PdfType[]
+     * @throws PdfTypeException
      */
-    public function getUnfilteredStream()
+    public function getFilters()
     {
-        $stream = $this->getStream();
         $filters = PdfDictionary::get($this->value, 'Filter');
         if ($filters instanceof PdfNull) {
-            return $stream;
+            return [];
         }
 
         if ($filters instanceof PdfArray) {
@@ -233,6 +231,24 @@ public function getUnfilteredStream()
             $filters = [$filters];
         }
 
+        return $filters;
+    }
+
+    /**
+     * Get the unfiltered stream data.
+     *
+     * @return string
+     * @throws FilterException
+     * @throws PdfParserException
+     */
+    public function getUnfilteredStream()
+    {
+        $stream = $this->getStream();
+        $filters = $this->getFilters();
+        if ($filters === []) {
+            return $stream;
+        }
+
         $decodeParams = PdfDictionary::get($this->value, 'DecodeParms');
         if ($decodeParams instanceof PdfArray) {
             $decodeParams = $decodeParams->value;
@@ -308,6 +324,21 @@ public function getUnfilteredStream()
                     $stream = $filterObject->decode($stream);
                     break;
 
+                case 'Crypt':
+                    if (!$decodeParam instanceof PdfDictionary) {
+                        break;
+                    }
+                    // Filter is "Identity"
+                    $name = PdfDictionary::get($decodeParam, 'Name');
+                    if (!$name instanceof PdfName || $name->value !== 'Identity') {
+                        break;
+                    }
+
+                    throw new FilterException(
+                        'Support for Crypt filters other than "Identity" is not implemented.',
+                        FilterException::UNSUPPORTED_FILTER
+                    );
+
                 default:
                     throw new FilterException(
                         \sprintf('Unsupported filter "%s".', $filter->value),
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfString.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfString.php
index 1636e68d60f6..dc4ce3359e89 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfString.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfString.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
@@ -78,6 +78,36 @@ public static function ensure($string)
         return PdfType::ensureType(self::class, $string, 'String value expected.');
     }
 
+    /**
+     * Escapes sequences in a string according to the PDF specification.
+     *
+     * @param string $s
+     * @return string
+     */
+    public static function escape($s)
+    {
+        // Still a bit faster, than direct replacing
+        if (
+            \strpos($s, '\\') !== false ||
+            \strpos($s, ')')  !== false ||
+            \strpos($s, '(')  !== false ||
+            \strpos($s, "\x0D") !== false ||
+            \strpos($s, "\x0A") !== false ||
+            \strpos($s, "\x09") !== false ||
+            \strpos($s, "\x08") !== false ||
+            \strpos($s, "\x0C") !== false
+        ) {
+            // is faster than strtr(...)
+            return \str_replace(
+                ['\\',   ')',   '(',   "\x0D", "\x0A", "\x09", "\x08", "\x0C"],
+                ['\\\\', '\\)', '\\(', '\r',   '\n',   '\t',   '\b',   '\f'],
+                $s
+            );
+        }
+
+        return $s;
+    }
+
     /**
      * Unescapes escaped sequences in a PDF string according to the PDF specification.
      *
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfToken.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfToken.php
index 012b9fd26c44..8293c28a17d5 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfToken.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfToken.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfType.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfType.php
index 7672dcdc1be2..ecd18b3b094d 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfType.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfType.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
@@ -69,6 +69,34 @@ protected static function ensureType($type, $value, $errorMessage)
         return $value;
     }
 
+    /**
+     * Flatten indirect object references to direct objects.
+     *
+     * @param PdfType $value
+     * @param PdfParser $parser
+     * @return PdfType
+     * @throws CrossReferenceException
+     * @throws PdfParserException
+     */
+    public static function flatten(PdfType $value, PdfParser $parser)
+    {
+        if ($value instanceof PdfIndirectObjectReference) {
+            return self::flatten(self::resolve($value, $parser), $parser);
+        }
+
+        if ($value instanceof PdfDictionary || $value instanceof PdfArray) {
+            foreach ($value->value as $key => $_value) {
+                $value->value[$key] = self::flatten($_value, $parser);
+            }
+        }
+
+        if ($value instanceof PdfStream) {
+            throw new PdfTypeException('There is a stream object found which cannot be flattened to a direct object.');
+        }
+
+        return $value;
+    }
+
     /**
      * The value of the PDF type.
      *
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfTypeException.php b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfTypeException.php
index 593d14740dda..88d2c2059b0d 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfTypeException.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfParser/Type/PdfTypeException.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfReader/DataStructure/Rectangle.php b/mod/assign/feedback/editpdf/fpdi/PdfReader/DataStructure/Rectangle.php
index 9b19ff813364..afbe569bad6e 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfReader/DataStructure/Rectangle.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfReader/DataStructure/Rectangle.php
@@ -4,12 +4,13 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
 namespace setasign\Fpdi\PdfReader\DataStructure;
 
+use setasign\Fpdi\Math\Vector;
 use setasign\Fpdi\PdfParser\CrossReference\CrossReferenceException;
 use setasign\Fpdi\PdfParser\PdfParser;
 use setasign\Fpdi\PdfParser\PdfParserException;
@@ -64,6 +65,11 @@ public static function byPdfArray($array, PdfParser $parser)
         return new self($ax, $ay, $bx, $by);
     }
 
+    public static function byVectors(Vector $ll, Vector $ur)
+    {
+        return new self($ll->getX(), $ll->getY(), $ur->getX(), $ur->getY());
+    }
+
     /**
      * Rectangle constructor.
      *
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfReader/Page.php b/mod/assign/feedback/editpdf/fpdi/PdfReader/Page.php
index b207c7932766..ad3c0c26375a 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfReader/Page.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfReader/Page.php
@@ -4,21 +4,27 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
 namespace setasign\Fpdi\PdfReader;
 
+use setasign\Fpdi\FpdiException;
+use setasign\Fpdi\GraphicsState;
+use setasign\Fpdi\Math\Vector;
 use setasign\Fpdi\PdfParser\Filter\FilterException;
 use setasign\Fpdi\PdfParser\PdfParser;
 use setasign\Fpdi\PdfParser\PdfParserException;
 use setasign\Fpdi\PdfParser\Type\PdfArray;
 use setasign\Fpdi\PdfParser\Type\PdfDictionary;
+use setasign\Fpdi\PdfParser\Type\PdfHexString;
 use setasign\Fpdi\PdfParser\Type\PdfIndirectObject;
+use setasign\Fpdi\PdfParser\Type\PdfName;
 use setasign\Fpdi\PdfParser\Type\PdfNull;
 use setasign\Fpdi\PdfParser\Type\PdfNumeric;
 use setasign\Fpdi\PdfParser\Type\PdfStream;
+use setasign\Fpdi\PdfParser\Type\PdfString;
 use setasign\Fpdi\PdfParser\Type\PdfType;
 use setasign\Fpdi\PdfParser\Type\PdfTypeException;
 use setasign\Fpdi\PdfReader\DataStructure\Rectangle;
@@ -83,7 +89,7 @@ public function getPageObject()
      */
     public function getPageDictionary()
     {
-        if (null === $this->pageDictionary) {
+        if ($this->pageDictionary === null) {
             $this->pageDictionary = PdfDictionary::ensure(PdfType::resolve($this->getPageObject(), $this->parser));
         }
 
@@ -155,7 +161,7 @@ public function getAttribute($name, $inherited = true)
     public function getRotation()
     {
         $rotation = $this->getAttribute('Rotate');
-        if (null === $rotation) {
+        if ($rotation === null) {
             return 0;
         }
 
@@ -268,4 +274,147 @@ public function getContentStream()
             PdfReaderException::UNEXPECTED_DATA_TYPE
         );
     }
+
+    /**
+     * Get information of all external links on this page.
+     *
+     * All coordinates are normalized in view to rotation and translation of the boundary-box, so that their
+     * origin is lower-left.
+     *
+     * @return array
+     */
+    public function getExternalLinks($box = PageBoundaries::CROP_BOX)
+    {
+        try {
+            $dict = $this->getPageDictionary();
+            $annotations = PdfType::resolve(PdfDictionary::get($dict, 'Annots'), $this->parser);
+        } catch (FpdiException $e) {
+            return [];
+        }
+
+        if (!$annotations instanceof PdfArray) {
+            return [];
+        }
+
+        $links = [];
+
+        foreach ($annotations->value as $entry) {
+            try {
+                $annotation = PdfType::resolve($entry, $this->parser);
+
+                $value = PdfType::resolve(PdfDictionary::get($annotation, 'Subtype'), $this->parser);
+                if (!$value instanceof PdfName || $value->value !== 'Link') {
+                    continue;
+                }
+
+                $dest = PdfType::resolve(PdfDictionary::get($annotation, 'Dest'), $this->parser);
+                if (!$dest instanceof PdfNull) {
+                    continue;
+                }
+
+                $action = PdfType::resolve(PdfDictionary::get($annotation, 'A'), $this->parser);
+                if (!$action instanceof PdfDictionary) {
+                    continue;
+                }
+
+                $actionType = PdfType::resolve(PdfDictionary::get($action, 'S'), $this->parser);
+                if (!$actionType instanceof PdfName || $actionType->value !== 'URI') {
+                    continue;
+                }
+
+                $uri = PdfType::resolve(PdfDictionary::get($action, 'URI'), $this->parser);
+                if ($uri instanceof PdfString) {
+                    $uriValue = PdfString::unescape($uri->value);
+                } elseif ($uri instanceof PdfHexString) {
+                    $uriValue = \hex2bin($uri->value);
+                } else {
+                    continue;
+                }
+
+                $rect = PdfType::resolve(PdfDictionary::get($annotation, 'Rect'), $this->parser);
+                if (!$rect instanceof PdfArray || count($rect->value) !== 4) {
+                    continue;
+                }
+
+                $rect = Rectangle::byPdfArray($rect, $this->parser);
+                if ($rect->getWidth() === 0 || $rect->getHeight() === 0) {
+                    continue;
+                }
+
+                $bbox = $this->getBoundary($box);
+                $rotation = $this->getRotation();
+
+                $gs = new GraphicsState();
+                $gs->translate(-$bbox->getLlx(), -$bbox->getLly());
+                $gs->rotate($bbox->getLlx(), $bbox->getLly(), -$rotation);
+
+                switch ($rotation) {
+                    case 90:
+                        $gs->translate(-$bbox->getWidth(), 0);
+                        break;
+                    case 180:
+                        $gs->translate(-$bbox->getWidth(), -$bbox->getHeight());
+                        break;
+                    case 270:
+                        $gs->translate(0, -$bbox->getHeight());
+                        break;
+                }
+
+                $normalizedRect = Rectangle::byVectors(
+                    $gs->toUserSpace(new Vector($rect->getLlx(), $rect->getLly())),
+                    $gs->toUserSpace(new Vector($rect->getUrx(), $rect->getUry()))
+                );
+
+                $quadPoints = PdfType::resolve(PdfDictionary::get($annotation, 'QuadPoints'), $this->parser);
+                $normalizedQuadPoints = [];
+                if ($quadPoints instanceof PdfArray) {
+                    $quadPointsCount = count($quadPoints->value);
+                    if ($quadPointsCount % 8 === 0) {
+                        for ($i = 0; ($i + 1) < $quadPointsCount; $i += 2) {
+                            $x = PdfNumeric::ensure(PdfType::resolve($quadPoints->value[$i], $this->parser));
+                            $y = PdfNumeric::ensure(PdfType::resolve($quadPoints->value[$i + 1], $this->parser));
+
+                            $v = $gs->toUserSpace(new Vector($x->value, $y->value));
+                            $normalizedQuadPoints[] = $v->getX();
+                            $normalizedQuadPoints[] = $v->getY();
+                        }
+                    }
+                }
+
+                // we remove unsupported/unneeded values here
+                unset(
+                    $annotation->value['P'],
+                    $annotation->value['NM'],
+                    $annotation->value['AP'],
+                    $annotation->value['AS'],
+                    $annotation->value['Type'],
+                    $annotation->value['Subtype'],
+                    $annotation->value['Rect'],
+                    $annotation->value['A'],
+                    $annotation->value['QuadPoints'],
+                    $annotation->value['Rotate'],
+                    $annotation->value['M'],
+                    $annotation->value['StructParent'],
+                    $annotation->value['OC']
+                );
+
+                // ...and flatten the PDF object to eliminate any indirect references.
+                // Indirect references are a problem when writing the output in FPDF
+                // because FPDF uses pre-calculated object numbers while FPDI creates
+                // them at runtime.
+                $annotation = PdfType::flatten($annotation, $this->parser);
+
+                $links[] = [
+                    'rect' => $normalizedRect,
+                    'quadPoints' => $normalizedQuadPoints,
+                    'uri' => $uriValue,
+                    'pdfObject' => $annotation
+                ];
+            } catch (FpdiException $e) {
+                continue;
+            }
+        }
+
+        return $links;
+    }
 }
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfReader/PageBoundaries.php b/mod/assign/feedback/editpdf/fpdi/PdfReader/PageBoundaries.php
index 9a6a1f3d1cda..ec24cdea500e 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfReader/PageBoundaries.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfReader/PageBoundaries.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfReader/PdfReader.php b/mod/assign/feedback/editpdf/fpdi/PdfReader/PdfReader.php
index e31b110f85b7..6e4dae8c77c0 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfReader/PdfReader.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfReader/PdfReader.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/PdfReader/PdfReaderException.php b/mod/assign/feedback/editpdf/fpdi/PdfReader/PdfReaderException.php
index 99f7d125ce52..2b3487e95b13 100644
--- a/mod/assign/feedback/editpdf/fpdi/PdfReader/PdfReaderException.php
+++ b/mod/assign/feedback/editpdf/fpdi/PdfReader/PdfReaderException.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/Tcpdf/Fpdi.php b/mod/assign/feedback/editpdf/fpdi/Tcpdf/Fpdi.php
index 9dc31e90a5cb..05c8fe031f39 100644
--- a/mod/assign/feedback/editpdf/fpdi/Tcpdf/Fpdi.php
+++ b/mod/assign/feedback/editpdf/fpdi/Tcpdf/Fpdi.php
@@ -4,18 +4,22 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
 namespace setasign\Fpdi\Tcpdf;
 
+use setasign\Fpdi\FpdiException;
 use setasign\Fpdi\FpdiTrait;
 use setasign\Fpdi\PdfParser\CrossReference\CrossReferenceException;
 use setasign\Fpdi\PdfParser\Filter\AsciiHex;
 use setasign\Fpdi\PdfParser\PdfParserException;
+use setasign\Fpdi\PdfParser\Type\PdfArray;
+use setasign\Fpdi\PdfParser\Type\PdfDictionary;
 use setasign\Fpdi\PdfParser\Type\PdfHexString;
 use setasign\Fpdi\PdfParser\Type\PdfIndirectObject;
+use setasign\Fpdi\PdfParser\Type\PdfName;
 use setasign\Fpdi\PdfParser\Type\PdfNull;
 use setasign\Fpdi\PdfParser\Type\PdfNumeric;
 use setasign\Fpdi\PdfParser\Type\PdfStream;
@@ -42,7 +46,7 @@ class Fpdi extends \pdf
      *
      * @string
      */
-    const VERSION = '2.3.7';
+    const VERSION = '2.6.0';
 
     /**
      * A counter for template ids.
@@ -146,7 +150,7 @@ protected function _getxobjectdict()
     {
         $out = parent::_getxobjectdict();
 
-        foreach ($this->importedPages as $key => $pageData) {
+        foreach ($this->importedPages as $pageData) {
             $out .= '/' . $pageData['id'] . ' ' . $pageData['objectNumber'] . ' 0 R ';
         }
 
@@ -247,7 +251,7 @@ protected function writePdfType(PdfType $value)
         if ($value instanceof PdfString) {
             $string = PdfString::unescape($value->value);
             $string = $this->_encrypt_data($this->currentObjectNumber, $string);
-            $value->value = \TCPDF_STATIC::_escape($string);
+            $value->value = PdfString::escape($string);
         } elseif ($value instanceof PdfHexString) {
             $filter = new AsciiHex();
             $string = $filter->decode($value->value);
@@ -268,4 +272,120 @@ protected function writePdfType(PdfType $value)
 
         $this->fpdiWritePdfType($value);
     }
+
+    /**
+     * This method will add additional data to the last created link/annotation.
+     *
+     * It will copy styling properties (supported by TCPDF) of the imported link.
+     *
+     * @param array $externalLink
+     * @param float|int $xPt
+     * @param float|int $scaleX
+     * @param float|int $yPt
+     * @param float|int $newHeightPt
+     * @param float|int $scaleY
+     * @param array $importedPage
+     * @return void
+     */
+    protected function adjustLastLink($externalLink, $xPt, $scaleX, $yPt, $newHeightPt, $scaleY, $importedPage)
+    {
+        $parser = $this->getPdfReader($importedPage['readerId'])->getParser();
+
+        if ($this->inxobj) {
+            // store parameters for later use on template
+            $lastAnnotationKey = count($this->xobjects[$this->xobjid]['annotations']) - 1;
+            $lastAnnotationOpt = &$this->xobjects[$this->xobjid]['annotations'][$lastAnnotationKey]['opt'];
+        } else {
+            $lastAnnotationKey = count($this->PageAnnots[$this->page]) - 1;
+            $lastAnnotationOpt = &$this->PageAnnots[$this->page][$lastAnnotationKey]['opt'];
+        }
+
+        // ensure we have a default value - otherwise TCPDF will set it to 4 throughout
+        $lastAnnotationOpt['f'] = 0;
+
+        // values in this dictonary are all direct objects and we don't need to resolve them here again.
+        $values = $externalLink['pdfObject']->value;
+
+        foreach ($values as $key => $value) {
+            try {
+                switch ($key) {
+                    case 'BS':
+                        $value = PdfDictionary::ensure($value);
+                        $bs = [];
+                        if (isset($value->value['W'])) {
+                            $bs['w'] = PdfNumeric::ensure($value->value['W'])->value;
+                        }
+
+                        if (isset($value->value['S'])) {
+                            $bs['s'] = PdfName::ensure($value->value['S'])->value;
+                        }
+
+                        if (isset($value->value['D'])) {
+                            $d = [];
+                            foreach (PdfArray::ensure($value->value['D'])->value as $item) {
+                                $d[] = PdfNumeric::ensure($item)->value;
+                            }
+                            $bs['d'] = $d;
+                        }
+
+                        $lastAnnotationOpt['bs'] = $bs;
+                        break;
+
+                    case 'Border':
+                        $borderArray = PdfArray::ensure($value)->value;
+                        if (count($borderArray) < 3) {
+                            continue 2;
+                        }
+
+                        $border = [
+                            PdfNumeric::ensure($borderArray[0])->value,
+                            PdfNumeric::ensure($borderArray[1])->value,
+                            PdfNumeric::ensure($borderArray[2])->value,
+                        ];
+                        if (isset($borderArray[3])) {
+                            $dashArray = [];
+                            foreach (PdfArray::ensure($borderArray[3])->value as $item) {
+                                $dashArray[] = PdfNumeric::ensure($item)->value;
+                            }
+                            $border[] = $dashArray;
+                        }
+
+                        $lastAnnotationOpt['border'] = $border;
+                        break;
+
+                    case 'C':
+                        $c = [];
+                        $colors = PdfArray::ensure(PdfType::resolve($value, $parser))->value;
+                        $m = count($colors) === 4 ? 100 : 255;
+                        foreach ($colors as $item) {
+                            $c[] = PdfNumeric::ensure($item)->value * $m;
+                        }
+                        $lastAnnotationOpt['c'] = $c;
+                        break;
+
+                    case 'F':
+                        $lastAnnotationOpt['f'] = $value->value;
+                        break;
+
+                    case 'BE':
+                        // is broken in current TCPDF version: "bc" key is checked but "bs" is used.
+                        break;
+                }
+            // let's silence invalid/not supported values
+            } catch (FpdiException $e) {
+                continue;
+            }
+        }
+
+        // QuadPoints are not supported by TCPDF
+//        if (count($externalLink['quadPoints']) > 0) {
+//            $quadPoints = [];
+//            for ($i = 0, $n = count($externalLink['quadPoints']); $i < $n; $i += 2) {
+//                $quadPoints[] = $xPt + $externalLink['quadPoints'][$i] * $scaleX;
+//                $quadPoints[] = $this->hPt - $yPt - $newHeightPt + $externalLink['quadPoints'][$i + 1] * $scaleY;
+//            }
+//
+//            ????? = $quadPoints;
+//        }
+    }
 }
diff --git a/mod/assign/feedback/editpdf/fpdi/TcpdfFpdi.php b/mod/assign/feedback/editpdf/fpdi/TcpdfFpdi.php
index 9e6825bd3c1b..8f3c095e0474 100644
--- a/mod/assign/feedback/editpdf/fpdi/TcpdfFpdi.php
+++ b/mod/assign/feedback/editpdf/fpdi/TcpdfFpdi.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/Tfpdf/FpdfTpl.php b/mod/assign/feedback/editpdf/fpdi/Tfpdf/FpdfTpl.php
index c00d53d0b820..7b02bc85435b 100644
--- a/mod/assign/feedback/editpdf/fpdi/Tfpdf/FpdfTpl.php
+++ b/mod/assign/feedback/editpdf/fpdi/Tfpdf/FpdfTpl.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/Tfpdf/Fpdi.php b/mod/assign/feedback/editpdf/fpdi/Tfpdf/Fpdi.php
index 9af3f880b47f..bcf4472310e5 100644
--- a/mod/assign/feedback/editpdf/fpdi/Tfpdf/Fpdi.php
+++ b/mod/assign/feedback/editpdf/fpdi/Tfpdf/Fpdi.php
@@ -4,17 +4,14 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
 namespace setasign\Fpdi\Tfpdf;
 
+use setasign\Fpdi\FpdfTrait;
 use setasign\Fpdi\FpdiTrait;
-use setasign\Fpdi\PdfParser\CrossReference\CrossReferenceException;
-use setasign\Fpdi\PdfParser\PdfParserException;
-use setasign\Fpdi\PdfParser\Type\PdfIndirectObject;
-use setasign\Fpdi\PdfParser\Type\PdfNull;
 
 /**
  * Class Fpdi
@@ -24,131 +21,12 @@
 class Fpdi extends FpdfTpl
 {
     use FpdiTrait;
+    use FpdfTrait;
 
     /**
      * FPDI version
      *
      * @string
      */
-    const VERSION = '2.3.7';
-
-    public function _enddoc()
-    {
-        parent::_enddoc();
-        $this->cleanUp();
-    }
-
-    /**
-     * Draws an imported page or a template onto the page or another template.
-     *
-     * Give only one of the size parameters (width, height) to calculate the other one automatically in view to the
-     * aspect ratio.
-     *
-     * @param mixed $tpl The template id
-     * @param float|int|array $x The abscissa of upper-left corner. Alternatively you could use an assoc array
-     *                           with the keys "x", "y", "width", "height", "adjustPageSize".
-     * @param float|int $y The ordinate of upper-left corner.
-     * @param float|int|null $width The width.
-     * @param float|int|null $height The height.
-     * @param bool $adjustPageSize
-     * @return array The size
-     * @see Fpdi::getTemplateSize()
-     */
-    public function useTemplate($tpl, $x = 0, $y = 0, $width = null, $height = null, $adjustPageSize = false)
-    {
-        if (isset($this->importedPages[$tpl])) {
-            $size = $this->useImportedPage($tpl, $x, $y, $width, $height, $adjustPageSize);
-            if ($this->currentTemplateId !== null) {
-                $this->templates[$this->currentTemplateId]['resources']['templates']['importedPages'][$tpl] = $tpl;
-            }
-            return $size;
-        }
-
-        return parent::useTemplate($tpl, $x, $y, $width, $height, $adjustPageSize);
-    }
-
-    /**
-     * Get the size of an imported page or template.
-     *
-     * Give only one of the size parameters (width, height) to calculate the other one automatically in view to the
-     * aspect ratio.
-     *
-     * @param mixed $tpl The template id
-     * @param float|int|null $width The width.
-     * @param float|int|null $height The height.
-     * @return array|bool An array with following keys: width, height, 0 (=width), 1 (=height), orientation (L or P)
-     */
-    public function getTemplateSize($tpl, $width = null, $height = null)
-    {
-        $size = parent::getTemplateSize($tpl, $width, $height);
-        if ($size === false) {
-            return $this->getImportedPageSize($tpl, $width, $height);
-        }
-
-        return $size;
-    }
-
-    /**
-     * @inheritdoc
-     * @throws CrossReferenceException
-     * @throws PdfParserException
-     */
-    public function _putimages()
-    {
-        $this->currentReaderId = null;
-        parent::_putimages();
-
-        foreach ($this->importedPages as $key => $pageData) {
-            $this->_newobj();
-            $this->importedPages[$key]['objectNumber'] = $this->n;
-            $this->currentReaderId = $pageData['readerId'];
-            $this->writePdfType($pageData['stream']);
-            $this->_put('endobj');
-        }
-
-        foreach (\array_keys($this->readers) as $readerId) {
-            $parser = $this->getPdfReader($readerId)->getParser();
-            $this->currentReaderId = $readerId;
-
-            while (($objectNumber = \array_pop($this->objectsToCopy[$readerId])) !== null) {
-                try {
-                    $object = $parser->getIndirectObject($objectNumber);
-                } catch (CrossReferenceException $e) {
-                    if ($e->getCode() === CrossReferenceException::OBJECT_NOT_FOUND) {
-                        $object = PdfIndirectObject::create($objectNumber, 0, new PdfNull());
-                    } else {
-                        throw $e;
-                    }
-                }
-
-                $this->writePdfType($object);
-            }
-        }
-
-        $this->currentReaderId = null;
-    }
-
-    /**
-     * @inheritdoc
-     */
-    protected function _putxobjectdict()
-    {
-        foreach ($this->importedPages as $key => $pageData) {
-            $this->_put('/' . $pageData['id'] . ' ' . $pageData['objectNumber'] . ' 0 R');
-        }
-
-        parent::_putxobjectdict();
-    }
-
-    /**
-     * @inheritdoc
-     */
-    protected function _put($s, $newLine = true)
-    {
-        if ($newLine) {
-            $this->buffer .= $s . "\n";
-        } else {
-            $this->buffer .= $s;
-        }
-    }
+    const VERSION = '2.6.0';
 }
diff --git a/mod/assign/feedback/editpdf/fpdi/autoload.php b/mod/assign/feedback/editpdf/fpdi/autoload.php
index 4c3df9d8c94e..7ea6b0558bbe 100644
--- a/mod/assign/feedback/editpdf/fpdi/autoload.php
+++ b/mod/assign/feedback/editpdf/fpdi/autoload.php
@@ -4,7 +4,7 @@
  * This file is part of FPDI
  *
  * @package   setasign\Fpdi
- * @copyright Copyright (c) 2020 Setasign GmbH & Co. KG (https://www.setasign.com)
+ * @copyright Copyright (c) 2023 Setasign GmbH & Co. KG (https://www.setasign.com)
  * @license   http://opensource.org/licenses/mit-license The MIT License
  */
 
diff --git a/mod/assign/feedback/editpdf/fpdi/readme_moodle.txt b/mod/assign/feedback/editpdf/fpdi/readme_moodle.txt
index 5dd5456dd1d2..3ce4699e1a5b 100644
--- a/mod/assign/feedback/editpdf/fpdi/readme_moodle.txt
+++ b/mod/assign/feedback/editpdf/fpdi/readme_moodle.txt
@@ -17,67 +17,3 @@ Installation
 1) Download the latest version of fpdi from the url above.
 2) Unzip the src directory files into this directory.
 3) Update mod/assign/feedback/editpdf/fpdi/Tcpdf/Fpdi.php(or whichever file it has been replaced with) to extend 'pdf' instead of 'TCPDF'.
-4) Make a note below of any changes made.
-
-2021/05/26
-----------
-1/ Updated to 2.3.6
-
-Updated by Paul Holden (MDL-71717)
-
-2020/12/16
-----------
-1/ Updated to 2.3.5
-
-Updated by Paul Holden (MDL-70312)
-
-2019/06/18
-----------
-1/ Updated to 2.2.0
-2/ Amended the installation instructions
-3/ Updated pdf.php to inherit from the TCPDF version instead of the FPDI generic version
-   (Refer https://manuals.setasign.com/fpdi-manual/v2/migrating/#index-4)
-4/ Updated pdf.php to account for function changes
-   (Refer https://manuals.setasign.com/fpdi-manual/v2/migrating/#index-6)
-5/ With the restructure by fpdi, no need to apply patches from MDL-55848 and MDL-60301
-
-Updated by Peter Dias (MDL-65774)
-
-2017/10/03
-----------
-1/ Updated to 1.6.2
-2/ Cherry-picked changes in MDL-55848.
-3/ Renamed 'TCPDF' to 'pdf' as stated above.
-4/ Applied php7.2 compatibility fix, remove this if it is fixed in next major release (2.0) (MDL-60301).
-
-Updated by Ankit Agarwal<ankit.agrr@gmail.com> (MDL-60301)
-
-2016/11/15
-----------
-
-1) Class not exists check and the empty fpdi_bridge class has been removed from fpdi_bridge.php to fix a behat error.
-
-Updated by Simey Lameze (MDL-55848)
-
-2015/12/04
-----------
-Updated to FPDI: 1.6.1
-
-1) Changed 'TCPDF' to 'pdf' (as stated above).
-2) License changed from Apache Software License 2.0 to The MIT License (MIT).
-
-2015/10/01
-----------
-Updated to FPDI: 1.5.4
-
-fpdi no longer uses fpdi2tcpdf_bridge.php this has been replaced with fpdi_bridge.php.
-fpdi_bridge.php has been modified to extend pdf (lib/pdflib.php) as was done with
-fpdi2tcpdf_bridge.php.
-
-Updated by Adrian Greeve (MDL-49515)
-
-------------------
-Previous versions:
-
-FPDI: 1.4.4
-FPDF_TPL: 1.2.3
diff --git a/mod/assign/feedback/editpdf/tests/document_services_test.php b/mod/assign/feedback/editpdf/tests/document_services_test.php
index e39ec8accf0e..7a62ef51a402 100644
--- a/mod/assign/feedback/editpdf/tests/document_services_test.php
+++ b/mod/assign/feedback/editpdf/tests/document_services_test.php
@@ -51,7 +51,6 @@ public function test_save_file_saves_the_file() {
         $this->getDataGenerator()->enrol_user($user->id, $course->id, 'student');
 
         $method = new ReflectionMethod('\assignfeedback_editpdf\document_services', 'save_file');
-        $method->setAccessible(true);
 
         $filearea = document_services::TMP_ROTATED_JPG_FILEAREA;
         $content = 'some random content';
@@ -82,7 +81,6 @@ public function test_save_rotated_image_file_saves_the_file() {
         $this->getDataGenerator()->enrol_user($user->id, $course->id, 'student');
 
         $method = new ReflectionMethod('\assignfeedback_editpdf\document_services', 'save_rotated_image_file');
-        $method->setAccessible(true);
 
         $imagecontent = file_get_contents($CFG->dirroot . '/lib/filestorage/tests/fixtures/testimage.png');
         $imageresource = imagecreatefromstring($imagecontent);
diff --git a/mod/assign/feedback/editpdf/thirdpartylibs.xml b/mod/assign/feedback/editpdf/thirdpartylibs.xml
index 1b9b676c178c..8fc2fc02de5b 100644
--- a/mod/assign/feedback/editpdf/thirdpartylibs.xml
+++ b/mod/assign/feedback/editpdf/thirdpartylibs.xml
@@ -4,7 +4,7 @@
     <location>fpdi</location>
     <name>FPDI</name>
     <description>Collection of PHP classes facilitating developers to read pages from existing PDF documents and use them as templates in FPDF.</description>
-    <version>2.3.7</version>
+    <version>2.6.0</version>
     <license>MIT</license>
     <repository>https://github.com/Setasign/FPDI</repository>
     <copyrights>
diff --git a/mod/assign/tests/downloader_test.php b/mod/assign/tests/downloader_test.php
index d7716ec51137..fa80c4c5d809 100644
--- a/mod/assign/tests/downloader_test.php
+++ b/mod/assign/tests/downloader_test.php
@@ -134,7 +134,6 @@ public function test_load_filelist(
         // Expose protected filelist attribute.
         $rc = new \ReflectionClass(downloader::class);
         $rcp = $rc->getProperty('filesforzipping');
-        $rcp->setAccessible(true);
 
         // Add some replacements.
         $search = ['PARTICIPANT', 'DEFAULTTEAM'];
diff --git a/mod/assign/tests/locallib_participants_test.php b/mod/assign/tests/locallib_participants_test.php
index 7656238ac7f5..6b7842c74418 100644
--- a/mod/assign/tests/locallib_participants_test.php
+++ b/mod/assign/tests/locallib_participants_test.php
@@ -168,7 +168,6 @@ public function helper_add_submission($assign, $user, $data, $type) {
 
         $rc = new \ReflectionClass('assign');
         $rcm = $rc->getMethod('update_submission');
-        $rcm->setAccessible(true);
         $rcm->invokeArgs($assign, [$submission, $user->id, true, false]);
 
         $plugin = $assign->get_submission_plugin_by_type($type);
diff --git a/mod/assign/tests/locallib_test.php b/mod/assign/tests/locallib_test.php
index 0340c190f9ed..144bc13d4747 100644
--- a/mod/assign/tests/locallib_test.php
+++ b/mod/assign/tests/locallib_test.php
@@ -4015,7 +4015,6 @@ public function test_fix_null_grades($grade, $gradebookvalue) {
 
         // Call fix_null_grades().
         $method = new \ReflectionMethod(\assign::class, 'fix_null_grades');
-        $method->setAccessible(true);
         $result = $method->invoke($assign);
 
         $this->assertSame(true, $result);
diff --git a/mod/bigbluebuttonbn/classes/test/subplugins_test_helper_trait.php b/mod/bigbluebuttonbn/classes/test/subplugins_test_helper_trait.php
index 4844865a763a..f2305d33dc03 100644
--- a/mod/bigbluebuttonbn/classes/test/subplugins_test_helper_trait.php
+++ b/mod/bigbluebuttonbn/classes/test/subplugins_test_helper_trait.php
@@ -49,27 +49,22 @@ protected function setup_fake_plugin(string $pluginname): void {
         $mockedcomponent = new ReflectionClass(core_component::class);
 
         $mockedplugins = $mockedcomponent->getProperty('plugins');
-        $mockedplugins->setAccessible(true);
         $plugins = $mockedplugins->getValue();
         $plugins[extension::BBB_EXTENSION_PLUGIN_NAME] = [$pluginname => $bbbextpath . "/$pluginname"];
         $mockedplugins->setValue(null, $plugins);
 
         $mockedplugintypes = $mockedcomponent->getProperty('plugintypes');
-        $mockedplugintypes->setAccessible(true);
         $pluginstypes = $mockedplugintypes->getValue();
         $pluginstypes[extension::BBB_EXTENSION_PLUGIN_NAME] = $bbbextpath;
         $mockedplugintypes->setValue(null, $pluginstypes);
 
         $fillclassmap = $mockedcomponent->getMethod('fill_classmap_cache');
-        $fillclassmap->setAccessible(true);
         $fillclassmap->invoke(null);
 
         $fillfilemap = $mockedcomponent->getMethod('fill_filemap_cache');
-        $fillfilemap->setAccessible(true);
         $fillfilemap->invoke(null);
 
         $mockedsubplugins = $mockedcomponent->getProperty('subplugins');
-        $mockedsubplugins->setAccessible(true);
         $subplugins = $mockedsubplugins->getValue();
         $subplugins['mod_bigbluebuttonbn'][extension::BBB_EXTENSION_PLUGIN_NAME][] = $pluginname;
         $mockedsubplugins->setValue(null, $subplugins);
@@ -148,10 +143,8 @@ protected function uninstall_fake_plugin(string $pluginname): void {
         $mockedcomponent = new ReflectionClass(core_component::class);
         // Here we reset the plugin caches.
         $mockedplugintypes = $mockedcomponent->getProperty('plugintypes');
-        $mockedplugintypes->setAccessible(true);
         $mockedplugintypes->setValue(null, null);
         $fillclassmap = $mockedcomponent->getMethod('init');
-        $fillclassmap->setAccessible(true);
         $fillclassmap->invoke(null);
 
         // Now uninstall the plugin and clean everything up for other tests.
diff --git a/mod/bigbluebuttonbn/tests/behat/add_instance.feature b/mod/bigbluebuttonbn/tests/behat/add_instance.feature
index 55516b52628a..602f593725c7 100644
--- a/mod/bigbluebuttonbn/tests/behat/add_instance.feature
+++ b/mod/bigbluebuttonbn/tests/behat/add_instance.feature
@@ -31,7 +31,7 @@ Feature: bigbluebuttonbn instance
 
   Scenario: Add a mod_bigbluebuttonbn instance with Recordings only
     When I am on the "BBB Instance name 3" "bigbluebuttonbn activity" page
-    And I should not see "This room is ready. You can join the session now."
+    Then I should not see "This room is ready. You can join the session now."
     And I should not see "Join session"
     And I should see "Recordings"
 
diff --git a/mod/bigbluebuttonbn/tests/behat/behat_mod_bigbluebuttonbn.php b/mod/bigbluebuttonbn/tests/behat/behat_mod_bigbluebuttonbn.php
index 5bda0afbd369..ffe5bd695136 100644
--- a/mod/bigbluebuttonbn/tests/behat/behat_mod_bigbluebuttonbn.php
+++ b/mod/bigbluebuttonbn/tests/behat/behat_mod_bigbluebuttonbn.php
@@ -262,10 +262,8 @@ public function install_simple_subplugin() {
         $this->setup_fake_plugin("simple");
         $mockedcomponent = new ReflectionClass(core_component::class);
         $mockedplugintypes = $mockedcomponent->getProperty('plugintypes');
-        $mockedplugintypes->setAccessible(true);
         $mockedplugintypes->setValue(null, null);
         $init = $mockedcomponent->getMethod('init');
-        $init->setAccessible(true);
         $init->invoke(null);
         // I enable the plugin.
         $manager = core_plugin_manager::resolve_plugininfo_class(\mod_bigbluebuttonbn\extension::BBB_EXTENSION_PLUGIN_NAME);
diff --git a/mod/bigbluebuttonbn/tests/behat/completion.feature b/mod/bigbluebuttonbn/tests/behat/completion.feature
index 8eda9a36dce1..fe208aa3573b 100644
--- a/mod/bigbluebuttonbn/tests/behat/completion.feature
+++ b/mod/bigbluebuttonbn/tests/behat/completion.feature
@@ -18,14 +18,14 @@ Feature: As a user I can complete a BigblueButtonBN activity by usual or custom
 
   Scenario: I set the completion to standard type of completion.
     Given I am on the "RoomRecordings" "bigbluebuttonbn activity" page logged in as admin
-    And I click on "Settings" "link"
+    When I click on "Settings" "link"
     And I expand all fieldsets
     And I set the following fields to these values:
       | Add requirements         | 1                  |
       | View the activity   | 1                                                 |
     And I press "Save and display"
     And I log out
-    Given I am on the "RoomRecordings" "bigbluebuttonbn activity" page logged in as traverst
+    And I am on the "RoomRecordings" "bigbluebuttonbn activity" page logged in as traverst
     Then I should see "Done: View"
 
   @javascript
@@ -33,22 +33,22 @@ Feature: As a user I can complete a BigblueButtonBN activity by usual or custom
     Given a BigBlueButton mock server is configured
     And the following config values are set as admin:
       | bigbluebuttonbn_meetingevents_enabled | 1 |
-    When I am on the "RoomRecordings" "bigbluebuttonbn activity" page logged in as admin
+    And I am on the "RoomRecordings" "bigbluebuttonbn activity" page logged in as admin
     And I click on "Settings" "link"
     And I expand all fieldsets
     And I set the following fields to these values:
-      | Add requirements         | 1                  |
-      | Chats               | 1                                                 |
+      | Add requirements | 1 |
+      | Chats            | 1 |
     And I press "Save and display"
     # We start the meeting here so to make sure that meta_analytics-callback-url is set.
     And the following "mod_bigbluebuttonbn > meeting" exists:
       | activity | RoomRecordings |
     And I log out
-    Given I am on the "RoomRecordings" "bigbluebuttonbn activity" page logged in as traverst
+    And I am on the "RoomRecordings" "bigbluebuttonbn activity" page logged in as traverst
     When I click on "Join session" "link"
     And I switch to "bigbluebutton_conference" window
     And I wait until the page is ready
-    Then I follow "End Meeting"
+    And I follow "End Meeting"
     And the BigBlueButtonBN server has received the following events from user "traverst":
       | instancename   | eventtype | eventdata |
       | RoomRecordings | chats     | 1         |
@@ -57,7 +57,7 @@ Feature: As a user I can complete a BigblueButtonBN activity by usual or custom
     # is closed before.
     And I close all opened windows
     And I switch to the main window
-    Given the BigBlueButtonBN activity "RoomRecordings" has sent recording all its events
+    And the BigBlueButtonBN activity "RoomRecordings" has sent recording all its events
     And I run all adhoc tasks
     And I reload the page
     Then I should see "Done: Participate in 1 chat(s)"
diff --git a/mod/bigbluebuttonbn/tests/behat/guest_access.feature b/mod/bigbluebuttonbn/tests/behat/guest_access.feature
index d27adc9874f2..b371cff41eba 100644
--- a/mod/bigbluebuttonbn/tests/behat/guest_access.feature
+++ b/mod/bigbluebuttonbn/tests/behat/guest_access.feature
@@ -18,29 +18,32 @@ Feature: Guest access allows external users to connect to a meeting
       | bigbluebuttonbn_guestaccess_enabled | <guestaccess> |
     When I am on the "RoomRecordings" "bigbluebuttonbn activity editing" page logged in as "admin"
     Then I <result> "Guest access"
-    Then I log out
+    And I log out
     Examples:
       | guestaccess | result         |
       | 1           | should see     |
       | 0           | should not see |
 
   @javascript
-  Scenario: I should see Guest settings on the module form
+  Scenario Outline: I should see Guest settings on the module form
     Given the following config values are set as admin:
       | bigbluebuttonbn_guestaccess_enabled | 1 |
     When I am on the "RoomRecordings" "bigbluebuttonbn activity editing" page logged in as "admin"
-    Then I should see "Guest access"
+    And I should see "Guest access"
     And I click on "Expand all" "link" in the "region-main" "region"
-    Then I should see "Allow guest access"
-    And I should not see "Meeting link"
-    And I should not see "Meeting password"
-    When I set the field "Allow guest access" to "1"
-    Then I should see "Guests joining must be admitted by a moderator"
-    And I should see "Meeting link"
-    And I should see "Meeting password"
-    And I should see "Copy link"
-    And I should see "Copy password"
-    Then I log out
+    And I should see "Allow guest access"
+    And I set the field "Allow guest access" to <guestaccess>
+    Then I <result> "Guests joining must be admitted by a moderator"
+    And I <seelink> "Meeting link"
+    And I <seepassword> "Meeting password"
+    And I <seecopylink> "Copy link"
+    And I <seecopypw> "Copy password"
+    And I log out
+
+    Examples:
+      | guestaccess | result         | seelink        | seepassword     | seecopylink    | seecopypw   |
+      | "1"         | should see     | should see     | should see      | should see     | should see  |
+      | "0"         | should not see | should not see | should not see  | should not see | should not see |
 
   @javascript
   Scenario: I should be able to use the guest link and see the popup dialog
@@ -67,12 +70,12 @@ Feature: Guest access allows external users to connect to a meeting
   Scenario: I should be able to invite guest to the meeting
     Given the following config values are set as admin:
       | bigbluebuttonbn_guestaccess_enabled | 1 |
-    And I am on the "RoomRecordingsWithGuest" "bigbluebuttonbn activity" page logged in as "admin"
+    When I am on the "RoomRecordingsWithGuest" "bigbluebuttonbn activity" page logged in as "admin"
     And I click on "Add guests" "button"
     And I set the field "Guest emails" to "testuser@email.com"
     And  I click on "OK" "button" in the "Add guests to this meeting" "dialogue"
     Then I should see "An invitation will be sent to testuser@email.com."
-    Then I log out
+    And I log out
 
   Scenario: I should be able to invite guest to the meeting even if forcelogin is set
     Given the following config values are set as admin:
diff --git a/mod/bigbluebuttonbn/tests/behat/join_meeting.feature b/mod/bigbluebuttonbn/tests/behat/join_meeting.feature
index 9a6e39cde8ac..6eb1deeff326 100644
--- a/mod/bigbluebuttonbn/tests/behat/join_meeting.feature
+++ b/mod/bigbluebuttonbn/tests/behat/join_meeting.feature
@@ -7,7 +7,7 @@ Feature: Test the ability to run the full meeting lifecycle (start to end)
     And I accept dpa and enable bigbluebuttonbn plugin
     And the following config values are set as admin:
       | bigbluebuttonbn_userlimit_editable | 1 |
-    Given the following course exists:
+    And the following course exists:
       | name      | Test course |
       | shortname | C1          |
     And the following "users" exist:
@@ -32,8 +32,8 @@ Feature: Test the ability to run the full meeting lifecycle (start to end)
   Scenario: Users should be able to join a meeting then end the meeting for themselves and
   return to the meeting page to join again.
     When I am on the "Room recordings" Activity page logged in as traverst
-    Then "Join session" "link" should exist
-    When I click on "Join session" "link"
+    And "Join session" "link" should exist
+    And I click on "Join session" "link"
     And I switch to "bigbluebutton_conference" window
     And I click on "End Meeting" "link"
     # Selenium driver does not like the click action to be done before we
@@ -51,15 +51,15 @@ Feature: Test the ability to run the full meeting lifecycle (start to end)
     And I click on "Join session" "link"
     And I switch to the main window
     And I log out
-    Then I am on the "Room recordings" Activity page logged in as uraverst
+    And I am on the "Room recordings" Activity page logged in as uraverst
     And "Join session" "link" should exist
     And I click on "Join session" "link"
     And I switch to the main window
     And I log out
-    Then I am on the "Room recordings" Activity page logged in as vraverst
-    Then "Join session" "link" should not exist
+    And I am on the "Room recordings" Activity page logged in as vraverst
+    And "Join session" "link" should not exist
     And I should see "The limit of how many users allowed in a session has been reached"
     And I log out
-    Then I am on the "Room recordings" Activity page logged in as admin
-    Then "Join session" "link" should not exist
+    And I am on the "Room recordings" Activity page logged in as admin
+    And "Join session" "link" should not exist
     And I should see "The limit of how many users allowed in a session has been reached"
diff --git a/mod/bigbluebuttonbn/tests/behat/join_meeting_as_guest.feature b/mod/bigbluebuttonbn/tests/behat/join_meeting_as_guest.feature
index 14a97bb036df..4a2c4edae472 100644
--- a/mod/bigbluebuttonbn/tests/behat/join_meeting_as_guest.feature
+++ b/mod/bigbluebuttonbn/tests/behat/join_meeting_as_guest.feature
@@ -32,22 +32,22 @@ Feature: Test the ability to run the full meeting lifecycle (start to end) for g
 
   Scenario: Teacher users should be able to see the guest user information
     When I am on the "Room recordings" Activity page logged in as teacher
-    Then I should see "Add guests"
-    When I click on "Add guests" "button"
-    Then I should see "Add guests to this meeting" in the ".modal-dialog" "css_element"
+    And I should see "Add guests"
+    Then I click on "Add guests" "button"
+    And I should see "Add guests to this meeting" in the ".modal-dialog" "css_element"
 
   Scenario: Guest users should be able to join a meeting as guest when the meeting is running.
     When I am on the "Room recordings" Activity page logged in as traverst
-    Then "Join session" "link" should exist
-    When I click on "Join session" "link"
+    And "Join session" "link" should exist
+    And I click on "Join session" "link"
     And I switch to the main window
-    Then I log out
+    And I log out
     And I close all opened windows
-    Then I am on the "Room recordings" "mod_bigbluebuttonbn > BigblueButtonBN Guest" page
+    And I am on the "Room recordings" "mod_bigbluebuttonbn > BigblueButtonBN Guest" page
     Then I should see "Guest username"
     And I should see "Password"
     And I set the field "username" to "Test Guest User"
     And I click on "Join meeting" "button"
-    Then I should see "Test Guest User"
+    And I should see "Test Guest User"
     And I click on "Leave Meeting" "link"
-    Then I should see "C1: Room recordings"
+    And I should see "C1: Room recordings"
diff --git a/mod/bigbluebuttonbn/tests/behat/lock_settings.feature b/mod/bigbluebuttonbn/tests/behat/lock_settings.feature
index f3b6d7fd3c09..9f6a6f1b6d89 100644
--- a/mod/bigbluebuttonbn/tests/behat/lock_settings.feature
+++ b/mod/bigbluebuttonbn/tests/behat/lock_settings.feature
@@ -60,4 +60,4 @@ Feature: Test that the meeting has the right lock setting.
     And I click on "Join session" "link"
     And I switch to "bigbluebutton_conference" window
     Then I should see "disableCam : enabled" in the "lockSettings" "mod_bigbluebuttonbn > Meeting field"
-    Then I should see "lockOnJoin : enabled" in the "lockSettings" "mod_bigbluebuttonbn > Meeting field"
+    And I should see "lockOnJoin : enabled" in the "lockSettings" "mod_bigbluebuttonbn > Meeting field"
diff --git a/mod/bigbluebuttonbn/tests/behat/recordings_import.feature b/mod/bigbluebuttonbn/tests/behat/recordings_import.feature
index fc7a9069c1ec..e5f442bce3f0 100644
--- a/mod/bigbluebuttonbn/tests/behat/recordings_import.feature
+++ b/mod/bigbluebuttonbn/tests/behat/recordings_import.feature
@@ -74,7 +74,7 @@ Feature: Manage and list recordings
     And I click on "OK" "button" in the "Confirm" "dialogue"
     # There is no confirmation dialog when deleting an imported record.
     And I wait until the page is ready
-    Then I should not see "Recording 1"
+    But I should not see "Recording 1"
     And I click on "Import recording links" "button"
     And I select "Test Course 1 (C1)" from the "sourcecourseid" singleselect
     And I select "RoomRecordings" from the "sourcebn" singleselect
@@ -88,31 +88,31 @@ Feature: Manage and list recordings
     And I delete "RoomRecordings" activity
     # The activity is deleted asynchroneously.
     And I run all adhoc tasks
-    Then I am on the "RoomRecordings1" "bigbluebuttonbn activity" page logged in as "admin"
+    And I am on the "RoomRecordings1" "bigbluebuttonbn activity" page logged in as "admin"
     And I click on "Import recording links" "button"
     And I select "Recordings from deleted activities" from the "sourcecourseid" singleselect
     Then I should see "Recording 1"
     And I should see "Recording 2"
     # add the first recording
-    Then I click on "a.action-icon" "css_element" in the "Recording 1" "table_row"
+    And I click on "a.action-icon" "css_element" in the "Recording 1" "table_row"
     # add the second recording
     And I click on "a.action-icon" "css_element" in the "Recording 2" "table_row"
     And I wait until the page is ready
     And I click on "Go back" "button"
     # This should be refactored with the right classes for the table element
     # We use javascript here to create the table so we don't get the same structure.
-    Then "Recording 1" "table_row" should exist
+    And "Recording 1" "table_row" should exist
     And I click on "a[data-action='delete']" "css_element" in the "Recording 1" "table_row"
     And I click on "OK" "button" in the "Confirm" "dialogue"
     # There is no confirmation dialog when deleting an imported record.
     And I wait until the page is ready
-    Then I should not see "Recording 1"
+    But I should not see "Recording 1"
     # Change window size to large to avoid the "Import recording links" button being hidden (random failure).
     And I change window size to "large"
     And I click on "Import recording links" "button"
     And I select "Recordings from deleted activities" from the "sourcecourseid" singleselect
     And I should see "Recording 1"
-    And I should not see "Recording 2"
+    But I should not see "Recording 2"
 
   Scenario: I check that when I disable Import recording feature the import recording link button should not be shown
     Given I log in as "admin"
diff --git a/mod/bigbluebuttonbn/tests/behat/room.feature b/mod/bigbluebuttonbn/tests/behat/room.feature
index cc91c6373611..484a417b43b2 100644
--- a/mod/bigbluebuttonbn/tests/behat/room.feature
+++ b/mod/bigbluebuttonbn/tests/behat/room.feature
@@ -25,11 +25,11 @@ Feature: The recording can be managed through the room page and as a user I can
   @javascript
   Scenario: Recording should be sortable by date
     Given I am on the "RoomRecordings" "bigbluebuttonbn activity" page logged in as admin
-    Then I click on "th[data-yui3-col-id='date'] .yui3-datatable-sort-indicator" "css_element"
-    Then "Recording 1" "text" should appear before "Recording 3" "text"
-    Then "Recording 3" "text" should appear before "Recording 2" "text"
-    Then "Recording 2" "text" should appear before "Recording 4" "text"
-    Then I click on "th[data-yui3-col-id='date'] .yui3-datatable-sort-indicator" "css_element"
+    When I click on "th[data-yui3-col-id='date'] .yui3-datatable-sort-indicator" "css_element"
+    And "Recording 1" "text" should appear before "Recording 3" "text"
+    And "Recording 3" "text" should appear before "Recording 2" "text"
+    And "Recording 2" "text" should appear before "Recording 4" "text"
+    And I click on "th[data-yui3-col-id='date'] .yui3-datatable-sort-indicator" "css_element"
     Then "Recording 1" "text" should appear after "Recording 3" "text"
-    Then "Recording 3" "text" should appear after "Recording 2" "text"
-    Then "Recording 2" "text" should appear after "Recording 4" "text"
+    And "Recording 3" "text" should appear after "Recording 2" "text"
+    And "Recording 2" "text" should appear after "Recording 4" "text"
diff --git a/mod/bigbluebuttonbn/tests/behat/subplugins.feature b/mod/bigbluebuttonbn/tests/behat/subplugins.feature
index ede760905f5e..d098b395a19d 100644
--- a/mod/bigbluebuttonbn/tests/behat/subplugins.feature
+++ b/mod/bigbluebuttonbn/tests/behat/subplugins.feature
@@ -21,7 +21,7 @@ Feature: BigBlueButtonBN Subplugins test
   Scenario: I check that new fields are available and editable in the instance edit form
     Given I am on the "BBB Instance name" "bigbluebuttonbn activity editing" page logged in as "admin"
     When I expand all fieldsets
-    And I should see "New field"
+    Then I should see "New field"
 
   @javascript
   Scenario: I check that new fields are available and when I edit the field the value is saved
diff --git a/mod/bigbluebuttonbn/tests/instance_test.php b/mod/bigbluebuttonbn/tests/instance_test.php
index 194b3c9aac36..6788f1e2ae9b 100644
--- a/mod/bigbluebuttonbn/tests/instance_test.php
+++ b/mod/bigbluebuttonbn/tests/instance_test.php
@@ -632,7 +632,6 @@ public function test_get_instance_info_retriever() {
         $instance = instance::get_from_instanceid($record->id);
         $instancereflection = new \ReflectionClass($instance);
         $getinstanceinforetriever = $instancereflection->getMethod('get_instance_info_retriever');
-        $getinstanceinforetriever->setAccessible(true);
         $this->assertInstanceOf('\mod_bigbluebuttonbn\instance',
             $getinstanceinforetriever->invoke($instance, $record->id, instance::IDTYPE_INSTANCEID));
         $this->assertEquals($cm->id, $instance->get_cm_id());
diff --git a/mod/bigbluebuttonbn/tests/lib_test.php b/mod/bigbluebuttonbn/tests/lib_test.php
index b54be9fee768..ae24f29bba88 100644
--- a/mod/bigbluebuttonbn/tests/lib_test.php
+++ b/mod/bigbluebuttonbn/tests/lib_test.php
@@ -432,7 +432,6 @@ public function test_bigbluebuttonbn_reset_course_form_definition() {
         $form = new mod_bigbluebuttonbn_mod_form($data, 1, $bbactivitycm, $this->get_course());
         $refclass = new ReflectionClass("mod_bigbluebuttonbn_mod_form");
         $formprop = $refclass->getProperty('_form');
-        $formprop->setAccessible(true);
 
         /* @var $mform MoodleQuickForm quickform object definition */
         $mform = $formprop->getValue($form);
diff --git a/mod/bigbluebuttonbn/tests/local/extension_test.php b/mod/bigbluebuttonbn/tests/local/extension_test.php
index 51d5460f111d..02561cb7bd56 100644
--- a/mod/bigbluebuttonbn/tests/local/extension_test.php
+++ b/mod/bigbluebuttonbn/tests/local/extension_test.php
@@ -76,7 +76,6 @@ public function test_get_class_implementing(bool $bbbenabled, string $apiclass,
         // Make the method public so we can test it.
         $reflectionextension = new \ReflectionClass(extension::class);
         $getclassimplementing = $reflectionextension->getMethod('get_instances_implementing');
-        $getclassimplementing->setAccessible(true);
         $allfoundinstances = $getclassimplementing->invoke(null, $apiclass);
         $foundclasses = array_map(
             function($instance) {
diff --git a/mod/bigbluebuttonbn/tests/local/proxy/proxy_base_test.php b/mod/bigbluebuttonbn/tests/local/proxy/proxy_base_test.php
index 7aba2c0be49f..d019498959b9 100644
--- a/mod/bigbluebuttonbn/tests/local/proxy/proxy_base_test.php
+++ b/mod/bigbluebuttonbn/tests/local/proxy/proxy_base_test.php
@@ -86,7 +86,6 @@ public function test_get_checksum_not_supported() {
     protected static function get_status() {
         $rc = new \ReflectionClass(proxy_base::class);
         $rcm = $rc->getMethod('fetch_endpoint_xml');
-        $rcm->setAccessible(true);
         return $rcm->invoke(null, '');
     }
 }
diff --git a/mod/bigbluebuttonbn/tests/task/base_send_notification_test.php b/mod/bigbluebuttonbn/tests/task/base_send_notification_test.php
index fd9320d6377d..2515ea008c0d 100644
--- a/mod/bigbluebuttonbn/tests/task/base_send_notification_test.php
+++ b/mod/bigbluebuttonbn/tests/task/base_send_notification_test.php
@@ -54,7 +54,6 @@ public function test_set_instance_id(): void {
 
         $rc = new \ReflectionClass(base_send_notification::class);
         $rcm = $rc->getMethod('get_instance');
-        $rcm->setAccessible(true);
         $instance = $rcm->invoke($stub);
 
         $this->assertEquals($instancedata->id, $instance->get_instance_id());
diff --git a/mod/data/lib.php b/mod/data/lib.php
index 10465c593d96..1cd71f23bb72 100644
--- a/mod/data/lib.php
+++ b/mod/data/lib.php
@@ -3347,7 +3347,6 @@ function data_presets_generate_xml($course, $cm, $data) {
     $preset = preset::create_from_instance($manager, $data->name);
     $reflection = new \ReflectionClass(preset::class);
     $method = $reflection->getMethod('generate_preset_xml');
-    $method->setAccessible(true);
     return $method->invokeArgs($preset, []);
 }
 
diff --git a/mod/data/tests/preset_test.php b/mod/data/tests/preset_test.php
index 37f985667036..397b7876021f 100644
--- a/mod/data/tests/preset_test.php
+++ b/mod/data/tests/preset_test.php
@@ -567,7 +567,6 @@ public function test_generate_preset_xml(array $params, ?string $description) {
         // Make accessible the method.
         $reflection = new \ReflectionClass(preset::class);
         $method = $reflection->getMethod('generate_preset_xml');
-        $method->setAccessible(true);
 
         // The method should return empty string when trying to generate preset.xml for a plugin preset.
         $preset = preset::create_from_plugin(null, 'imagegallery');
diff --git a/mod/feedback/tests/item_test.php b/mod/feedback/tests/item_test.php
index 8541f5a71c2b..6be7eeb44aa2 100644
--- a/mod/feedback/tests/item_test.php
+++ b/mod/feedback/tests/item_test.php
@@ -58,7 +58,6 @@ public function test_get_analysed_textarea_for_excel_export(): void {
         $itemclass = feedback_get_item_class('textarea');
         $reflection = new ReflectionClass($itemclass);
         $method = $reflection->getMethod('get_analysed');
-        $method->setAccessible(true);
 
         // Call the method and indicate it is being used for Excel.
         $actual = $method->invoke(new $itemclass(), $item, false, $course->id, true);
diff --git a/mod/forum/tests/lib_test.php b/mod/forum/tests/lib_test.php
index 2624f053abe8..a31730566699 100644
--- a/mod/forum/tests/lib_test.php
+++ b/mod/forum/tests/lib_test.php
@@ -2866,7 +2866,6 @@ public function test_mod_forum_myprofile_navigation() {
         mod_forum_myprofile_navigation($tree, $user, $iscurrentuser, $course);
         $reflector = new \ReflectionObject($tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayHasKey('forumposts', $nodes->getValue($tree));
         $this->assertArrayHasKey('forumdiscussions', $nodes->getValue($tree));
     }
@@ -2891,7 +2890,6 @@ public function test_mod_forum_myprofile_navigation_as_guest() {
         mod_forum_myprofile_navigation($tree, $USER, $iscurrentuser, $course);
         $reflector = new \ReflectionObject($tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayNotHasKey('forumposts', $nodes->getValue($tree));
         $this->assertArrayNotHasKey('forumdiscussions', $nodes->getValue($tree));
     }
@@ -2916,7 +2914,6 @@ public function test_mod_forum_myprofile_navigation_different_user() {
         mod_forum_myprofile_navigation($tree, $user, $iscurrentuser, $course);
         $reflector = new \ReflectionObject($tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayHasKey('forumposts', $nodes->getValue($tree));
         $this->assertArrayHasKey('forumdiscussions', $nodes->getValue($tree));
     }
diff --git a/mod/h5pactivity/lang/en/deprecated.txt b/mod/h5pactivity/lang/en/deprecated.txt
new file mode 100644
index 000000000000..9c77acacaa82
--- /dev/null
+++ b/mod/h5pactivity/lang/en/deprecated.txt
@@ -0,0 +1 @@
+grade_h5p,mod_h5pactivity
diff --git a/mod/h5pactivity/lang/en/h5pactivity.php b/mod/h5pactivity/lang/en/h5pactivity.php
index 67d661a0c234..b4aa47d3252e 100644
--- a/mod/h5pactivity/lang/en/h5pactivity.php
+++ b/mod/h5pactivity/lang/en/h5pactivity.php
@@ -80,7 +80,7 @@
 $string['grade_average_attempt'] = 'Average grade';
 $string['grade_last_attempt'] = 'Last attempt';
 $string['grade_first_attempt'] = 'First attempt';
-$string['grade_h5p'] = 'Grade: {$a}';
+$string['gradenoun_h5p'] = 'Grade: {$a}';
 $string['h5pactivity:addinstance'] = 'Add a new H5P';
 $string['h5pactivity:reviewattempts'] = 'Review H5P attempts';
 $string['h5pactivity:submit'] = 'Submit H5P attempts';
@@ -148,3 +148,6 @@
 $string['view'] = 'View';
 $string['viewattempts'] = 'View attempts ({$a})';
 $string['view_report'] = 'View report';
+
+// Deprecated since Moodle 4.4.
+$string['grade_h5p'] = 'Grade: {$a}';
diff --git a/mod/h5pactivity/lib.php b/mod/h5pactivity/lib.php
index 831d93f1245b..0e27d6bfa578 100644
--- a/mod/h5pactivity/lib.php
+++ b/mod/h5pactivity/lib.php
@@ -755,7 +755,7 @@ function h5pactivity_print_recent_mod_activity(stdClass $activity, int $courseid
         'userurl' => new moodle_url('/user/view.php', array('id' => $activity->user->id, 'course' => $courseid)),
         'fullname' => $activity->user->fullname];
     if (isset($activity->grade)) {
-        $template['grade'] = get_string('grade_h5p', 'h5pactivity', $activity->grade);
+        $template['grade'] = get_string('gradenoun_h5p', 'h5pactivity', $activity->grade);
     }
 
     echo $OUTPUT->render_from_template('mod_h5pactivity/reviewattempts', $template);
diff --git a/mod/h5pactivity/tests/output/result/result_test.php b/mod/h5pactivity/tests/output/result/result_test.php
index 64184abd78f6..b33ee1fc1dfa 100644
--- a/mod/h5pactivity/tests/output/result/result_test.php
+++ b/mod/h5pactivity/tests/output/result/result_test.php
@@ -207,12 +207,10 @@ public function test_result_options(array $providedresultdata, array $expectedus
 
         $reflectionoutput = new \ReflectionClass($classname);
         $constructor = $reflectionoutput->getConstructor();
-        $constructor->setAccessible(true);
         $resultoutput = $reflectionoutput->newInstanceWithoutConstructor();
         $constructor->invoke($resultoutput, $result->get_data());
 
         $exportoptions = $reflectionoutput->getMethod('export_options');
-        $exportoptions->setAccessible(true);
 
         $data = $exportoptions->invoke($resultoutput);
         $useranswersdata = array_map(function($item) {
diff --git a/mod/h5pactivity/tests/xapi/handler_test.php b/mod/h5pactivity/tests/xapi/handler_test.php
index 02880e0c9dad..fcaa807a8853 100644
--- a/mod/h5pactivity/tests/xapi/handler_test.php
+++ b/mod/h5pactivity/tests/xapi/handler_test.php
@@ -421,7 +421,6 @@ public function test_validate_state(): void {
         $handler = handler::create($component);
         // Change the method visibility for validate_state in order to test it.
         $method = new \ReflectionMethod(handler::class, 'validate_state');
-        $method->setAccessible(true);
 
         // The activity id should be numeric.
         $state = test_helper::create_state(['activity' => item_activity::create_from_id('AA')]);
diff --git a/mod/quiz/accessrule/seb/tests/access_manager_test.php b/mod/quiz/accessrule/seb/tests/access_manager_test.php
index 610c2c3f5e00..44bcfe5ca6fa 100644
--- a/mod/quiz/accessrule/seb/tests/access_manager_test.php
+++ b/mod/quiz/accessrule/seb/tests/access_manager_test.php
@@ -55,7 +55,6 @@ public function test_access_manager_quizsettings_null() {
 
         $reflection = new \ReflectionClass('\quizaccess_seb\seb_access_manager');
         $property = $reflection->getProperty('quizsettings');
-        $property->setAccessible(true);
 
         $this->assertFalse($property->getValue($accessmanager));
     }
diff --git a/mod/quiz/accessrule/seb/tests/rule_test.php b/mod/quiz/accessrule/seb/tests/rule_test.php
index 651bfa2c983c..6da48695a3f3 100644
--- a/mod/quiz/accessrule/seb/tests/rule_test.php
+++ b/mod/quiz/accessrule/seb/tests/rule_test.php
@@ -999,7 +999,6 @@ public function test_get_download_seb_button() {
 
         $reflection = new \ReflectionClass('quizaccess_seb');
         $method = $reflection->getMethod('get_download_seb_button');
-        $method->setAccessible(true);
 
         // The current default contents.
         $this->assertStringContainsString($this->get_seb_download_link(), $method->invoke($this->make_rule()));
@@ -1022,7 +1021,6 @@ public function test_get_get_action_buttons_shows_download_seb_link() {
 
         $reflection = new \ReflectionClass('quizaccess_seb');
         $method = $reflection->getMethod('get_action_buttons');
-        $method->setAccessible(true);
 
         $this->assertStringContainsString($this->get_seb_download_link(), $method->invoke($this->make_rule()));
 
@@ -1042,7 +1040,6 @@ public function test_get_get_action_buttons_shows_launch_and_download_config_lin
 
         $reflection = new \ReflectionClass('quizaccess_seb');
         $method = $reflection->getMethod('get_action_buttons');
-        $method->setAccessible(true);
 
         $quizsettings = seb_quiz_settings::get_record(['quizid' => $this->quiz->id]);
 
@@ -1084,7 +1081,6 @@ public function test_get_get_action_buttons_shows_launch_and_download_config_lin
 
         $reflection = new \ReflectionClass('quizaccess_seb');
         $method = $reflection->getMethod('get_action_buttons');
-        $method->setAccessible(true);
 
         set_config('showseblinks', 'seb,http', 'quizaccess_seb');
         $this->assertStringContainsString($this->get_seb_launch_link(), $method->invoke($this->make_rule()));
@@ -1118,7 +1114,6 @@ public function test_get_quit_button() {
         // Set-up the button to be called.
         $reflection = new \ReflectionClass('quizaccess_seb');
         $method = $reflection->getMethod('get_quit_button');
-        $method->setAccessible(true);
 
         $button = $method->invoke($this->make_rule());
         $this->assertStringContainsString("http://test.quit.link", $button);
@@ -1205,7 +1200,6 @@ public function test_blocks_display_before_attempt_started() {
         // We will check if we show only fake blocks. Which means no other blocks on a page.
         $reflection = new \ReflectionClass('block_manager');
         $property = $reflection->getProperty('fakeblocksonly');
-        $property->setAccessible(true);
 
         $this->assertFalse($property->getValue($PAGE->blocks));
 
@@ -1241,7 +1235,6 @@ public function test_blocks_display_after_attempt_finished() {
         // We will check if we show only fake blocks. Which means no other blocks on a page.
         $reflection = new \ReflectionClass('block_manager');
         $property = $reflection->getProperty('fakeblocksonly');
-        $property->setAccessible(true);
 
         $this->assertFalse($property->getValue($PAGE->blocks));
 
diff --git a/mod/quiz/classes/adminpresets/adminpresets_review_setting.php b/mod/quiz/classes/adminpresets/adminpresets_review_setting.php
index e365bc22c561..7893e0a4a65a 100644
--- a/mod/quiz/classes/adminpresets/adminpresets_review_setting.php
+++ b/mod/quiz/classes/adminpresets/adminpresets_review_setting.php
@@ -36,7 +36,6 @@ protected function set_visiblevalue() {
 
         // Getting the masks descriptions (review_setting protected method).
         $reflectiontimes = new ReflectionMethod('mod_quiz\admin\review_setting', 'times');
-        $reflectiontimes->setAccessible(true);
         $times = $reflectiontimes->invoke(null);
 
         $visiblevalue = '';
diff --git a/mod/quiz/classes/structure.php b/mod/quiz/classes/structure.php
index 150024167065..10ce0bb92eae 100644
--- a/mod/quiz/classes/structure.php
+++ b/mod/quiz/classes/structure.php
@@ -1375,19 +1375,10 @@ public function can_add_random_questions() {
 
 
     /**
-     * Retrieve the list of slot tags for the given slot id.
-     *
-     * @param int $slotid The id for the slot
-     * @return stdClass[] The list of slot tag records
      * @deprecated since Moodle 4.0 MDL-71573
-     * @todo Final deprecation on Moodle 4.4 MDL-72438
-     */
-    public function get_slot_tags_for_slot_id($slotid) {
-        debugging('Function get_slot_tags_for_slot_id() has been deprecated and the structure
-         for this method have been moved to filtercondition in question_set_reference table, please
-          use the new structure instead.', DEBUG_DEVELOPER);
-        // All the associated code for this method have been removed to get rid of accidental call or errors.
-        return [];
+     */
+    public function get_slot_tags_for_slot_id() {
+        throw new \coding_exception(__FUNCTION__ . '() has been removed.');
     }
 
     /**
diff --git a/mod/quiz/deprecatedlib.php b/mod/quiz/deprecatedlib.php
index a155f74d52cf..45f2fb4101f2 100644
--- a/mod/quiz/deprecatedlib.php
+++ b/mod/quiz/deprecatedlib.php
@@ -35,80 +35,10 @@ function quiz_get_completion_state() {
 }
 
 /**
- * Retrieves tag information for the given list of quiz slot ids.
- * Currently the only slots that have tags are random question slots.
- *
- * Example:
- * If we have 3 slots with id 1, 2, and 3. The first slot has two tags, the second
- * has one tag, and the third has zero tags. The return structure will look like:
- * [
- *      1 => [
- *          quiz_slot_tags.id => { ...tag data... },
- *          quiz_slot_tags.id => { ...tag data... },
- *      ],
- *      2 => [
- *          quiz_slot_tags.id => { ...tag data... },
- *      ],
- *      3 => [],
- * ]
- *
- * @param int[] $slotids The list of id for the quiz slots.
- * @return array[] List of quiz_slot_tags records indexed by slot id.
  * @deprecated since Moodle 4.0
- * @todo Final deprecation on Moodle 4.4 MDL-72438
  */
-function quiz_retrieve_tags_for_slot_ids($slotids) {
-    debugging('Method quiz_retrieve_tags_for_slot_ids() is deprecated, ' .
-        'see filtercondition->tags from the question_set_reference table.', DEBUG_DEVELOPER);
-    global $DB;
-    if (empty($slotids)) {
-        return [];
-    }
-
-    $slottags = $DB->get_records_list('quiz_slot_tags', 'slotid', $slotids);
-    $tagsbyid = core_tag_tag::get_bulk(array_filter(array_column($slottags, 'tagid')), 'id, name');
-    $tagsbyname = false; // It will be loaded later if required.
-    $emptytagids = array_reduce($slotids, function($carry, $slotid) {
-        $carry[$slotid] = [];
-        return $carry;
-    }, []);
-
-    return array_reduce(
-        $slottags,
-        function($carry, $slottag) use ($slottags, $tagsbyid, $tagsbyname) {
-            if (isset($tagsbyid[$slottag->tagid])) {
-                // Make sure that we're returning the most updated tag name.
-                $slottag->tagname = $tagsbyid[$slottag->tagid]->name;
-            } else {
-                if ($tagsbyname === false) {
-                    // We were hoping that this query could be avoided, but life
-                    // showed its other side to us!
-                    $tagcollid = core_tag_area::get_collection('core', 'question');
-                    $tagsbyname = core_tag_tag::get_by_name_bulk(
-                        $tagcollid,
-                        array_column($slottags, 'tagname'),
-                        'id, name'
-                    );
-                }
-                if (isset($tagsbyname[$slottag->tagname])) {
-                    // Make sure that we're returning the current tag id that matches
-                    // the given tag name.
-                    $slottag->tagid = $tagsbyname[$slottag->tagname]->id;
-                } else {
-                    // The tag does not exist anymore (neither the tag id nor the tag name
-                    // matches an existing tag).
-                    // We still need to include this row in the result as some callers might
-                    // be interested in these rows. An example is the editing forms that still
-                    // need to display tag names even if they don't exist anymore.
-                    $slottag->tagid = null;
-                }
-            }
-
-            $carry[$slottag->slotid][$slottag->id] = $slottag;
-            return $carry;
-        },
-        $emptytagids
-    );
+function quiz_retrieve_tags_for_slot_ids() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
 }
 
 /**
diff --git a/mod/quiz/report/overview/tests/report_test.php b/mod/quiz/report/overview/tests/report_test.php
index f7b13bb244e2..4372a41e9fc3 100644
--- a/mod/quiz/report/overview/tests/report_test.php
+++ b/mod/quiz/report/overview/tests/report_test.php
@@ -230,7 +230,6 @@ public function test_report_sql(?string $isdownloading): void {
             $reflectionobject = $parent;
         }
         $prefsproperty = $reflectionobject->getProperty('prefs');
-        $prefsproperty->setAccessible(true);
         $prefs = $prefsproperty->getValue($table);
         $prefs['i_first'] = 'A';
         $prefsproperty->setValue($table, $prefs);
diff --git a/mod/quiz/report/statistics/tests/quiz_statistics_report_test.php b/mod/quiz/report/statistics/tests/quiz_statistics_report_test.php
index 0170a3769fe0..8e32faee8b2c 100644
--- a/mod/quiz/report/statistics/tests/quiz_statistics_report_test.php
+++ b/mod/quiz/report/statistics/tests/quiz_statistics_report_test.php
@@ -79,7 +79,6 @@ public function setUp(): void {
         }
 
         $reflectiondb = new \ReflectionProperty($lockfactory, 'db');
-        $reflectiondb->setAccessible(true);
         $reflectiondb->setValue($lockfactory, self::$lockdb);
         self::$lockfactory = $lockfactory;
     }
diff --git a/mod/quiz/report/statistics/tests/statistics_table_test.php b/mod/quiz/report/statistics/tests/statistics_table_test.php
index 1169112d5451..1161026012cb 100644
--- a/mod/quiz/report/statistics/tests/statistics_table_test.php
+++ b/mod/quiz/report/statistics/tests/statistics_table_test.php
@@ -39,7 +39,6 @@ public function test_format_percentage() {
         // The format_percentage method is protected. Use Reflection to call the method.
         $reflector = new \ReflectionClass('quiz_statistics_table');
         $method = $reflector->getMethod('format_percentage');
-        $method->setAccessible(true);
 
         $this->assertEquals(
                 '84.758%',
@@ -58,7 +57,6 @@ public function test_format_percentage_range() {
         // The format_percentage_range method is protected. Use Reflection to call the method.
         $reflector = new \ReflectionClass('quiz_statistics_table');
         $method = $reflector->getMethod('format_percentage_range');
-        $method->setAccessible(true);
 
         $this->assertEquals(
                 '54.400% − 84.758%',
@@ -77,7 +75,6 @@ public function test_format_range() {
         // The format_range method is protected. Use Reflection to call the method.
         $reflector = new \ReflectionClass('quiz_statistics_table');
         $method = $reflector->getMethod('format_range');
-        $method->setAccessible(true);
 
         $this->assertEquals(
                 '5 − 10',
diff --git a/mod/quiz/tests/local_structure_slot_random_test.php b/mod/quiz/tests/local_structure_slot_random_test.php
index 3a29b7e57570..cf7d12d7ccbf 100644
--- a/mod/quiz/tests/local_structure_slot_random_test.php
+++ b/mod/quiz/tests/local_structure_slot_random_test.php
@@ -82,7 +82,6 @@ public function test_constructor() {
 
         $rc = new \ReflectionClass('\mod_quiz\local\structure\slot_random');
         $rcp = $rc->getProperty('filtercondition');
-        $rcp->setAccessible(true);
         $record = json_decode($rcp->getValue($randomslot));
 
         $this->assertEquals($quiz->id, $randomslot->get_quiz()->id);
@@ -90,7 +89,6 @@ public function test_constructor() {
         $this->assertTrue($record->filters->category->filteroptions->includesubcategories);
 
         $rcp = $rc->getProperty('record');
-        $rcp->setAccessible(true);
         $record = $rcp->getValue($randomslot);
         $this->assertEquals(1, $record->maxmark);
     }
@@ -168,7 +166,6 @@ public function test_set_quiz() {
 
         $rc = new \ReflectionClass('\mod_quiz\local\structure\slot_random');
         $rcp = $rc->getProperty('quiz');
-        $rcp->setAccessible(true);
         $quizpropery = $rcp->getValue($randomslot);
 
         $this->assertEquals($quiz, $quizpropery);
@@ -223,7 +220,6 @@ public function test_set_tags_filter() {
 
         $rc = new \ReflectionClass('\mod_quiz\local\structure\slot_random');
         $rcp = $rc->getProperty('filtercondition');
-        $rcp->setAccessible(true);
         $tagspropery = $rcp->getValue($randomslot);
 
         $this->assertEquals([$tags['foo']->id, $tags['bar']->id],
diff --git a/mod/quiz/upgrade.txt b/mod/quiz/upgrade.txt
index dfe8ee9a4715..e91e37fd1fc5 100644
--- a/mod/quiz/upgrade.txt
+++ b/mod/quiz/upgrade.txt
@@ -19,6 +19,9 @@ This file describes API changes in the quiz code.
 * There is a new function qbank_helper::get_version_information_for_questions_in_attempt to efficiently
   check whether each question in an attempt is using the latest versions. This is used by re-grading,
   replacing some old code there, and to update teacher previews automatically.
+* The following previously deprecated methods have been removed and can no longer be used:
+  - `get_slot_tags_for_slot_id`
+  - `quiz_retrieve_tags_for_slot_ids`
 
 === 4.3 ===
 
diff --git a/mod/workshop/allocation/scheduled/tests/scheduled_allocator_test.php b/mod/workshop/allocation/scheduled/tests/scheduled_allocator_test.php
index d227143fab1b..5a9bb7c1f1c3 100644
--- a/mod/workshop/allocation/scheduled/tests/scheduled_allocator_test.php
+++ b/mod/workshop/allocation/scheduled/tests/scheduled_allocator_test.php
@@ -135,7 +135,6 @@ private function activate_the_scheduled_allocator(): void {
         $allocator = new \workshop_scheduled_allocator($this->workshop);
 
         $storesettingsmethod = new \ReflectionMethod('workshop_scheduled_allocator', 'store_settings');
-        $storesettingsmethod->setAccessible(true);
         $storesettingsmethod->invoke($allocator, true, true, $settings, new \workshop_allocation_result($allocator));
     }
 
diff --git a/mod/workshop/tests/locallib_test.php b/mod/workshop/tests/locallib_test.php
index 802163fcf581..adb540535f54 100644
--- a/mod/workshop/tests/locallib_test.php
+++ b/mod/workshop/tests/locallib_test.php
@@ -866,7 +866,6 @@ private function get_initial_bar_prefs_property(): array {
 
         $reflector = new \ReflectionObject($this->workshop);
         $initialbarprefsprop = $reflector->getProperty('initialbarprefs');
-        $initialbarprefsprop->setAccessible(true);
         $initialbarprefs = $initialbarprefsprop->getValue($this->workshop);
 
         return $initialbarprefs;
diff --git a/mod/workshop/tests/portfolio_caller_test.php b/mod/workshop/tests/portfolio_caller_test.php
index 195f9101eb29..6507ab46418c 100644
--- a/mod/workshop/tests/portfolio_caller_test.php
+++ b/mod/workshop/tests/portfolio_caller_test.php
@@ -81,7 +81,6 @@ public function test_load_data() {
 
         $reflector = new \ReflectionObject($portfoliocaller);
         $propertysubmission = $reflector->getProperty('submission');
-        $propertysubmission->setAccessible(true);
         $submission = $propertysubmission->getValue($portfoliocaller);
 
         $this->assertEquals($subid1, $submission->id);
diff --git a/notes/tests/lib_test.php b/notes/tests/lib_test.php
index 2ec419bfdd0a..b0b5296e6164 100644
--- a/notes/tests/lib_test.php
+++ b/notes/tests/lib_test.php
@@ -75,7 +75,6 @@ public function test_core_notes_myprofile_navigation() {
         core_notes_myprofile_navigation($this->tree, $USER, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayHasKey('notes', $nodes->getValue($this->tree));
     }
 
@@ -92,7 +91,6 @@ public function test_core_notes_myprofile_navigation_as_guest() {
         core_notes_myprofile_navigation($this->tree, $USER, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayNotHasKey('notes', $nodes->getValue($this->tree));
     }
 
@@ -112,7 +110,6 @@ public function test_core_notes_myprofile_navigation_notes_disabled() {
         core_notes_myprofile_navigation($this->tree, $USER, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayNotHasKey('notes', $nodes->getValue($this->tree));
     }
 }
diff --git a/privacy/tests/contextlist_test.php b/privacy/tests/contextlist_test.php
index b81cdd631d37..43370f72479c 100644
--- a/privacy/tests/contextlist_test.php
+++ b/privacy/tests/contextlist_test.php
@@ -127,7 +127,6 @@ public function test_guess_id_field_from_sql($sql, $expected) {
 
         $rc = new \ReflectionClass(contextlist::class);
         $rcm = $rc->getMethod('guess_id_field_from_sql');
-        $rcm->setAccessible(true);
         $actual = $rcm->invoke(new contextlist(), $sql);
 
         $this->assertEquals($expected, $actual, 'Unable to guess context id field in: '.$sql);
diff --git a/privacy/tests/moodle_content_writer_test.php b/privacy/tests/moodle_content_writer_test.php
index e2d8de216fe6..8ad701fc7c5a 100644
--- a/privacy/tests/moodle_content_writer_test.php
+++ b/privacy/tests/moodle_content_writer_test.php
@@ -1250,11 +1250,9 @@ protected function get_context_path($context, $subcontext = null, $name = '') {
 
         if (null === $subcontext) {
             $rcm = $rc->getMethod('get_context_path');
-            $rcm->setAccessible(true);
             $path = $rcm->invoke($writer);
         } else {
             $rcm = $rc->getMethod('get_path');
-            $rcm->setAccessible(true);
             $path = $rcm->invoke($writer, $subcontext, $name);
         }
 
diff --git a/question/amd/build/edit_tags.min.js b/question/amd/build/edit_tags.min.js
deleted file mode 100644
index 1b72136d5027..000000000000
--- a/question/amd/build/edit_tags.min.js
+++ /dev/null
@@ -1,12 +0,0 @@
-/**
- * A javascript module to handle question tags editing.
- *
- * @deprecated since Moodle 4.0
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- * @module     core_question/edit_tags
- * @copyright  2018 Simey Lameze <simey@moodle.com>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-define("core_question/edit_tags",["jquery","core/fragment","core/str","core/modal_events","core/modal_save_cancel","core/notification","core/custom_interaction_events","core_question/repository","core_question/selectors"],(function($,Fragment,Str,ModalEvents,ModalSaveCancel,Notification,CustomEvents,Repository,QuestionSelectors){var enableSaveButton=function(root){root.find(QuestionSelectors.actions.save).prop("disabled",!1)},disableSaveButton=function(root){root.find(QuestionSelectors.actions.save).prop("disabled",!0)},startLoading=function(root){root.find(QuestionSelectors.containers.loadingIcon).removeClass("hidden")},stopLoading=function(root){root.find(QuestionSelectors.containers.loadingIcon).addClass("hidden")},save=function(modal,root){disableSaveButton(root),startLoading(root);var formData=function(modal){return modal.getBody().find("form").serialize()}(modal),questionId=function(modal){return modal.getBody().data("questionid")}(modal),contextId=function(modal){return modal.getBody().data("contextid")}(modal);return Repository.submitTagCreateUpdateForm(questionId,contextId,formData).always((function(){stopLoading(root),enableSaveButton(root)})).catch(Notification.exception)};return{init:function(root){window.console.warn("warn: The core_question/repository has been deprecated.Please use qbank_tagquestion/repository instead."),function(root){var modalPromise=ModalSaveCancel.create({large:!1}).then((function(modal){return Str.get_string("questiontags","question").then((function(string){return modal.setTitle(string),string})).catch(Notification.exception),modal.getRoot().on(ModalEvents.save,(function(e){modal.getBody().find("form").submit(),e.preventDefault()})),modal.getRoot().on("submit","form",(function(e){save(modal,root).then((function(){modal.hide(),location.reload()})).catch(Notification.exception),e.preventDefault(),e.stopPropagation()})),modal}));root.on("click",QuestionSelectors.actions.edittags,(function(e){e.preventDefault(),modalPromise.then((modal=>modal.show()))})),root.on(CustomEvents.events.activate,QuestionSelectors.actions.edittags,(function(e){var currentTarget=$(e.currentTarget),questionId=currentTarget.data("questionid"),canTag=!!currentTarget.data("cantag"),contextId=currentTarget.data("contextid");modalPromise.then((function(modal){disableSaveButton(root),startLoading(root);var args={id:questionId},tagsFragment=Fragment.loadFragment("question","tags_form",contextId,args);return modal.setBody(tagsFragment),tagsFragment.then((function(){enableSaveButton(root)})).always((function(){stopLoading(root)})).catch(Notification.exception),canTag?modal.getRoot().find(QuestionSelectors.actions.save).show():modal.getRoot().find(QuestionSelectors.actions.save).hide(),function(modal,questionId){modal.getBody().attr("data-questionid",questionId)}(modal,questionId),function(modal,contextId){modal.getBody().attr("data-contextid",contextId)}(modal,contextId),modal})).catch(Notification.exception),e.preventDefault()}))}(root=$(root))}}}));
-
-//# sourceMappingURL=edit_tags.min.js.map
\ No newline at end of file
diff --git a/question/amd/build/edit_tags.min.js.map b/question/amd/build/edit_tags.min.js.map
deleted file mode 100644
index 74cc49c2395e..000000000000
--- a/question/amd/build/edit_tags.min.js.map
+++ /dev/null
@@ -1 +0,0 @@
-{"version":3,"file":"edit_tags.min.js","sources":["../src/edit_tags.js"],"sourcesContent":["// This file is part of Moodle - http://moodle.org/\n//\n// Moodle is free software: you can redistribute it and/or modify\n// it under the terms of the GNU General Public License as published by\n// the Free Software Foundation, either version 3 of the License, or\n// (at your option) any later version.\n//\n// Moodle is distributed in the hope that it will be useful,\n// but WITHOUT ANY WARRANTY; without even the implied warranty of\n// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n// GNU General Public License for more details.\n//\n// You should have received a copy of the GNU General Public License\n// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.\n\n/**\n * A javascript module to handle question tags editing.\n *\n * @deprecated since Moodle 4.0\n * @todo Final deprecation on Moodle 4.4 MDL-72438\n * @module     core_question/edit_tags\n * @copyright  2018 Simey Lameze <simey@moodle.com>\n * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later\n */\ndefine([\n            'jquery',\n            'core/fragment',\n            'core/str',\n            'core/modal_events',\n            'core/modal_save_cancel',\n            'core/notification',\n            'core/custom_interaction_events',\n            'core_question/repository',\n            'core_question/selectors',\n        ],\n        function(\n            $,\n            Fragment,\n            Str,\n            ModalEvents,\n            ModalSaveCancel,\n            Notification,\n            CustomEvents,\n            Repository,\n            QuestionSelectors\n        ) {\n\n    /**\n     * Enable the save button in the footer.\n     *\n     * @param {object} root The container element.\n     * @method enableSaveButton\n     */\n    var enableSaveButton = function(root) {\n        root.find(QuestionSelectors.actions.save).prop('disabled', false);\n    };\n\n    /**\n     * Disable the save button in the footer.\n     *\n     * @param {object} root The container element.\n     * @method disableSaveButton\n     */\n    var disableSaveButton = function(root) {\n        root.find(QuestionSelectors.actions.save).prop('disabled', true);\n    };\n\n    /**\n     * Get the serialised form data.\n     *\n     * @method getFormData\n     * @param {object} modal The modal object.\n     * @return {string} serialised form data\n     */\n    var getFormData = function(modal) {\n        return modal.getBody().find('form').serialize();\n    };\n\n    /**\n     * Set the element state to loading.\n     *\n     * @param {object} root The container element\n     * @method startLoading\n     */\n    var startLoading = function(root) {\n        var loadingIconContainer = root.find(QuestionSelectors.containers.loadingIcon);\n\n        loadingIconContainer.removeClass('hidden');\n    };\n\n    /**\n     * Remove the loading state from the element.\n     *\n     * @param {object} root The container element\n     * @method stopLoading\n     */\n    var stopLoading = function(root) {\n        var loadingIconContainer = root.find(QuestionSelectors.containers.loadingIcon);\n\n        loadingIconContainer.addClass('hidden');\n    };\n\n    /**\n     * Set the context Id data attribute on the modal.\n     *\n     * @param {Promise} modal The modal promise.\n     * @param {int} contextId The context id.\n     */\n    var setContextId = function(modal, contextId) {\n        modal.getBody().attr('data-contextid', contextId);\n    };\n\n    /**\n     * Get the context Id data attribute value from the modal body.\n     *\n     * @param {Promise} modal The modal promise.\n     * @return {int} The context id.\n     */\n    var getContextId = function(modal) {\n        return modal.getBody().data('contextid');\n    };\n\n    /**\n     * Set the question Id data attribute on the modal.\n     *\n     * @param {Promise} modal The modal promise.\n     * @param {int} questionId The question Id.\n     */\n    var setQuestionId = function(modal, questionId) {\n        modal.getBody().attr('data-questionid', questionId);\n    };\n\n    /**\n     * Get the question Id data attribute value from the modal body.\n     *\n     * @param {Promise} modal The modal promise.\n     * @return {int} The question Id.\n     */\n    var getQuestionId = function(modal) {\n        return modal.getBody().data('questionid');\n    };\n\n    /**\n     * Register event listeners for the module.\n     *\n     * @param {object} root The calendar root element\n     */\n    var registerEventListeners = function(root) {\n\n        var modalPromise = ModalSaveCancel.create({\n            large: false,\n        }).then(function(modal) {\n            // All of this code only executes once, when the modal is\n            // first created. This allows us to add any code that should\n            // only be run once, such as adding event handlers to the modal.\n            Str.get_string('questiontags', 'question')\n                .then(function(string) {\n                    modal.setTitle(string);\n                    return string;\n                })\n                .catch(Notification.exception);\n\n            modal.getRoot().on(ModalEvents.save, function(e) {\n                var form = modal.getBody().find('form');\n                form.submit();\n                e.preventDefault();\n            });\n\n            modal.getRoot().on('submit', 'form', function(e) {\n                save(modal, root).then(function() {\n                    modal.hide();\n                    location.reload();\n                    return;\n                }).catch(Notification.exception);\n\n                // Stop the form from actually submitting and prevent it's\n                // propagation because we have already handled the event.\n                e.preventDefault();\n                e.stopPropagation();\n            });\n\n            return modal;\n        });\n\n        root.on('click', QuestionSelectors.actions.edittags, function(e) {\n            e.preventDefault();\n            // eslint-disable-next-line promise/catch-or-return\n            modalPromise.then((modal) => modal.show());\n        });\n\n        // We need to add an event handler to the tags link because there are\n        // multiple links on the page and without adding a listener we don't know\n        // which one the user clicked on the show the modal.\n        root.on(CustomEvents.events.activate, QuestionSelectors.actions.edittags, function(e) {\n            var currentTarget = $(e.currentTarget);\n\n            var questionId = currentTarget.data('questionid'),\n                canTag = !!currentTarget.data('cantag'),\n                contextId = currentTarget.data('contextid');\n\n            // This code gets called each time the user clicks the tag link\n            // so we can use it to reload the contents of the tag modal.\n            modalPromise.then(function(modal) {\n                // Display spinner and disable save button.\n                disableSaveButton(root);\n                startLoading(root);\n\n                var args = {\n                    id: questionId\n                };\n\n                var tagsFragment = Fragment.loadFragment('question', 'tags_form', contextId, args);\n                modal.setBody(tagsFragment);\n\n                tagsFragment.then(function() {\n                    enableSaveButton(root);\n                    return;\n                })\n                .always(function() {\n                    // Always hide the loading spinner when the request\n                    // has completed.\n                    stopLoading(root);\n                    return;\n                })\n                .catch(Notification.exception);\n\n                // Show or hide the save button depending on whether the user\n                // has the capability to edit the tags.\n                if (canTag) {\n                    modal.getRoot().find(QuestionSelectors.actions.save).show();\n                } else {\n                    modal.getRoot().find(QuestionSelectors.actions.save).hide();\n                }\n\n                setQuestionId(modal, questionId);\n                setContextId(modal, contextId);\n\n                return modal;\n            }).catch(Notification.exception);\n\n            e.preventDefault();\n        });\n    };\n\n    /**\n     * Send the form data to the server to save question tags.\n     *\n     * @method save\n     * @param {object} modal The modal object.\n     * @param {object} root The container element.\n     * @return {object} A promise\n     */\n    var save = function(modal, root) {\n        // Display spinner and disable save button.\n        disableSaveButton(root);\n        startLoading(root);\n\n        var formData = getFormData(modal);\n        var questionId = getQuestionId(modal);\n        var contextId = getContextId(modal);\n\n        // Send the form data to the server for processing.\n        return Repository.submitTagCreateUpdateForm(questionId, contextId, formData)\n            .always(function() {\n                // Regardless of success or error we should always stop\n                // the loading icon and re-enable the buttons.\n                stopLoading(root);\n                enableSaveButton(root);\n                return;\n            })\n            .catch(Notification.exception);\n    };\n\n    return {\n        init: function(root) {\n            window.console.warn('warn: The core_question/repository has been deprecated.' +\n                'Please use qbank_tagquestion/repository instead.');\n            root = $(root);\n            registerEventListeners(root);\n        }\n    };\n});\n"],"names":["define","$","Fragment","Str","ModalEvents","ModalSaveCancel","Notification","CustomEvents","Repository","QuestionSelectors","enableSaveButton","root","find","actions","save","prop","disableSaveButton","startLoading","containers","loadingIcon","removeClass","stopLoading","addClass","modal","formData","getBody","serialize","getFormData","questionId","data","getQuestionId","contextId","getContextId","submitTagCreateUpdateForm","always","catch","exception","init","window","console","warn","modalPromise","create","large","then","get_string","string","setTitle","getRoot","on","e","submit","preventDefault","hide","location","reload","stopPropagation","edittags","show","events","activate","currentTarget","canTag","args","id","tagsFragment","loadFragment","setBody","attr","setQuestionId","setContextId","registerEventListeners"],"mappings":";;;;;;;;;AAwBAA,iCAAO,CACK,SACA,gBACA,WACA,oBACA,yBACA,oBACA,iCACA,2BACA,4BAEJ,SACIC,EACAC,SACAC,IACAC,YACAC,gBACAC,aACAC,aACAC,WACAC,uBASJC,iBAAmB,SAASC,MAC5BA,KAAKC,KAAKH,kBAAkBI,QAAQC,MAAMC,KAAK,YAAY,IAS3DC,kBAAoB,SAASL,MAC7BA,KAAKC,KAAKH,kBAAkBI,QAAQC,MAAMC,KAAK,YAAY,IAoB3DE,aAAe,SAASN,MACGA,KAAKC,KAAKH,kBAAkBS,WAAWC,aAE7CC,YAAY,WASjCC,YAAc,SAASV,MACIA,KAAKC,KAAKH,kBAAkBS,WAAWC,aAE7CG,SAAS,WAyJ9BR,KAAO,SAASS,MAAOZ,MAEvBK,kBAAkBL,MAClBM,aAAaN,UAETa,SAvLU,SAASD,cAChBA,MAAME,UAAUb,KAAK,QAAQc,YAsLrBC,CAAYJ,OACvBK,WAxHY,SAASL,cAClBA,MAAME,UAAUI,KAAK,cAuHXC,CAAcP,OAC3BQ,UA7IW,SAASR,cACjBA,MAAME,UAAUI,KAAK,aA4IZG,CAAaT,cAGtBf,WAAWyB,0BAA0BL,WAAYG,UAAWP,UAC9DU,QAAO,WAGJb,YAAYV,MACZD,iBAAiBC,SAGpBwB,MAAM7B,aAAa8B,kBAGrB,CACHC,KAAM,SAAS1B,MACX2B,OAAOC,QAAQC,KAAK,2GAhIC,SAAS7B,UAE9B8B,aAAepC,gBAAgBqC,OAAO,CACtCC,OAAO,IACRC,MAAK,SAASrB,cAIbpB,IAAI0C,WAAW,eAAgB,YAC1BD,MAAK,SAASE,eACXvB,MAAMwB,SAASD,QACRA,UAEVX,MAAM7B,aAAa8B,WAExBb,MAAMyB,UAAUC,GAAG7C,YAAYU,MAAM,SAASoC,GAC/B3B,MAAME,UAAUb,KAAK,QAC3BuC,SACLD,EAAEE,oBAGN7B,MAAMyB,UAAUC,GAAG,SAAU,QAAQ,SAASC,GAC1CpC,KAAKS,MAAOZ,MAAMiC,MAAK,WACnBrB,MAAM8B,OACNC,SAASC,YAEVpB,MAAM7B,aAAa8B,WAItBc,EAAEE,iBACFF,EAAEM,qBAGCjC,SAGXZ,KAAKsC,GAAG,QAASxC,kBAAkBI,QAAQ4C,UAAU,SAASP,GAC1DA,EAAEE,iBAEFX,aAAaG,MAAMrB,OAAUA,MAAMmC,YAMvC/C,KAAKsC,GAAG1C,aAAaoD,OAAOC,SAAUnD,kBAAkBI,QAAQ4C,UAAU,SAASP,OAC3EW,cAAgB5D,EAAEiD,EAAEW,eAEpBjC,WAAaiC,cAAchC,KAAK,cAChCiC,SAAWD,cAAchC,KAAK,UAC9BE,UAAY8B,cAAchC,KAAK,aAInCY,aAAaG,MAAK,SAASrB,OAEvBP,kBAAkBL,MAClBM,aAAaN,UAEToD,KAAO,CACPC,GAAIpC,YAGJqC,aAAe/D,SAASgE,aAAa,WAAY,YAAanC,UAAWgC,aAC7ExC,MAAM4C,QAAQF,cAEdA,aAAarB,MAAK,WACdlC,iBAAiBC,SAGpBuB,QAAO,WAGJb,YAAYV,SAGfwB,MAAM7B,aAAa8B,WAIhB0B,OACAvC,MAAMyB,UAAUpC,KAAKH,kBAAkBI,QAAQC,MAAM4C,OAErDnC,MAAMyB,UAAUpC,KAAKH,kBAAkBI,QAAQC,MAAMuC,OAvGjD,SAAS9B,MAAOK,YAChCL,MAAME,UAAU2C,KAAK,kBAAmBxC,YAyGhCyC,CAAc9C,MAAOK,YA9Hd,SAASL,MAAOQ,WAC/BR,MAAME,UAAU2C,KAAK,iBAAkBrC,WA8H/BuC,CAAa/C,MAAOQ,WAEbR,SACRY,MAAM7B,aAAa8B,WAEtBc,EAAEE,oBAsCFmB,CADA5D,KAAOV,EAAEU"}
\ No newline at end of file
diff --git a/question/amd/build/repository.min.js b/question/amd/build/repository.min.js
deleted file mode 100644
index 0d10b556edb9..000000000000
--- a/question/amd/build/repository.min.js
+++ /dev/null
@@ -1,12 +0,0 @@
-/**
- * A javascript module to handle question ajax actions.
- *
- * @deprecated since Moodle 4.0
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- * @module     core_question/repository
- * @copyright  2017 Simey Lameze <lameze@moodle.com>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-define("core_question/repository",["jquery","core/ajax"],(function($,Ajax){return{submitTagCreateUpdateForm:function(questionId,contextId,formdata){window.console.warn("warn: The core_question/repository has been deprecated.Please use qbank_tagquestion/repository instead.");var request={methodname:"core_question_submit_tags_form",args:{questionid:questionId,contextid:contextId,formdata:formdata}};return Ajax.call([request])[0]}}}));
-
-//# sourceMappingURL=repository.min.js.map
\ No newline at end of file
diff --git a/question/amd/build/repository.min.js.map b/question/amd/build/repository.min.js.map
deleted file mode 100644
index 373997c5b82a..000000000000
--- a/question/amd/build/repository.min.js.map
+++ /dev/null
@@ -1 +0,0 @@
-{"version":3,"file":"repository.min.js","sources":["../src/repository.js"],"sourcesContent":["// This file is part of Moodle - http://moodle.org/\n//\n// Moodle is free software: you can redistribute it and/or modify\n// it under the terms of the GNU General Public License as published by\n// the Free Software Foundation, either version 3 of the License, or\n// (at your option) any later version.\n//\n// Moodle is distributed in the hope that it will be useful,\n// but WITHOUT ANY WARRANTY; without even the implied warranty of\n// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n// GNU General Public License for more details.\n//\n// You should have received a copy of the GNU General Public License\n// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.\n\n/**\n * A javascript module to handle question ajax actions.\n *\n * @deprecated since Moodle 4.0\n * @todo Final deprecation on Moodle 4.4 MDL-72438\n * @module     core_question/repository\n * @copyright  2017 Simey Lameze <lameze@moodle.com>\n * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later\n */\ndefine(['jquery', 'core/ajax'], function($, Ajax) {\n\n    /**\n     * Submit the form data for the question tags form.\n     *\n     * @method submitTagCreateUpdateForm\n     * @param  {number} questionId\n     * @param  {number} contextId\n     * @param {string} formdata The URL encoded values from the form\n     * @returns {promise}\n     */\n    var submitTagCreateUpdateForm = function(questionId, contextId, formdata) {\n        window.console.warn('warn: The core_question/repository has been deprecated.' +\n            'Please use qbank_tagquestion/repository instead.');\n        var request = {\n            methodname: 'core_question_submit_tags_form',\n            args: {\n                questionid: questionId,\n                contextid: contextId,\n                formdata: formdata\n            }\n        };\n\n        return Ajax.call([request])[0];\n    };\n\n    return {\n        submitTagCreateUpdateForm: submitTagCreateUpdateForm\n    };\n});\n"],"names":["define","$","Ajax","submitTagCreateUpdateForm","questionId","contextId","formdata","window","console","warn","request","methodname","args","questionid","contextid","call"],"mappings":";;;;;;;;;AAwBAA,kCAAO,CAAC,SAAU,cAAc,SAASC,EAAGC,YA0BjC,CACHC,0BAhB4B,SAASC,WAAYC,UAAWC,UAC5DC,OAAOC,QAAQC,KAAK,+GAEhBC,QAAU,CACVC,WAAY,iCACZC,KAAM,CACFC,WAAYT,WACZU,UAAWT,UACXC,SAAUA,kBAIXJ,KAAKa,KAAK,CAACL,UAAU"}
\ No newline at end of file
diff --git a/question/amd/build/selectors.min.js b/question/amd/build/selectors.min.js
deleted file mode 100644
index 750edd806d51..000000000000
--- a/question/amd/build/selectors.min.js
+++ /dev/null
@@ -1,12 +0,0 @@
-/**
- * The purpose of this module is to centralize selectors related to question.
- *
- * @deprecated since Moodle 4.0
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- * @module     core_question/selectors
- * @copyright  2018 Simey Lameze <lameze@moodle.com>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-define("core_question/selectors",[],(function(){return window.console.warn("warn: The core_question/selectors has been deprecated. Please use qbank_tagquestion/selectors instead."),{actions:{save:'[data-action="save"]',edittags:'[data-action="edittags"]'},containers:{loadingIcon:'[data-region="overlay-icon-container"]'}}}));
-
-//# sourceMappingURL=selectors.min.js.map
\ No newline at end of file
diff --git a/question/amd/build/selectors.min.js.map b/question/amd/build/selectors.min.js.map
deleted file mode 100644
index cd9f6f8acc6e..000000000000
--- a/question/amd/build/selectors.min.js.map
+++ /dev/null
@@ -1 +0,0 @@
-{"version":3,"file":"selectors.min.js","sources":["../src/selectors.js"],"sourcesContent":["// This file is part of Moodle - http://moodle.org/\n//\n// Moodle is free software: you can redistribute it and/or modify\n// it under the terms of the GNU General Public License as published by\n// the Free Software Foundation, either version 3 of the License, or\n// (at your option) any later version.\n//\n// Moodle is distributed in the hope that it will be useful,\n// but WITHOUT ANY WARRANTY; without even the implied warranty of\n// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n// GNU General Public License for more details.\n//\n// You should have received a copy of the GNU General Public License\n// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.\n\n/**\n * The purpose of this module is to centralize selectors related to question.\n *\n * @deprecated since Moodle 4.0\n * @todo Final deprecation on Moodle 4.4 MDL-72438\n * @module     core_question/selectors\n * @copyright  2018 Simey Lameze <lameze@moodle.com>\n * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later\n */\ndefine([], function() {\n    window.console.warn('warn: The core_question/selectors has been deprecated. Please use qbank_tagquestion/selectors instead.');\n    return {\n        actions: {\n            save: '[data-action=\"save\"]',\n            edittags: '[data-action=\"edittags\"]',\n        },\n        containers: {\n            loadingIcon: '[data-region=\"overlay-icon-container\"]',\n        },\n    };\n});\n"],"names":["define","window","console","warn","actions","save","edittags","containers","loadingIcon"],"mappings":";;;;;;;;;AAwBAA,iCAAO,IAAI,kBACPC,OAAOC,QAAQC,KAAK,0GACb,CACHC,QAAS,CACLC,KAAM,uBACNC,SAAU,4BAEdC,WAAY,CACRC,YAAa"}
\ No newline at end of file
diff --git a/question/amd/src/edit_tags.js b/question/amd/src/edit_tags.js
deleted file mode 100644
index ea7b566e1c2f..000000000000
--- a/question/amd/src/edit_tags.js
+++ /dev/null
@@ -1,282 +0,0 @@
-// This file is part of Moodle - http://moodle.org/
-//
-// Moodle is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Moodle is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
-
-/**
- * A javascript module to handle question tags editing.
- *
- * @deprecated since Moodle 4.0
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- * @module     core_question/edit_tags
- * @copyright  2018 Simey Lameze <simey@moodle.com>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-define([
-            'jquery',
-            'core/fragment',
-            'core/str',
-            'core/modal_events',
-            'core/modal_save_cancel',
-            'core/notification',
-            'core/custom_interaction_events',
-            'core_question/repository',
-            'core_question/selectors',
-        ],
-        function(
-            $,
-            Fragment,
-            Str,
-            ModalEvents,
-            ModalSaveCancel,
-            Notification,
-            CustomEvents,
-            Repository,
-            QuestionSelectors
-        ) {
-
-    /**
-     * Enable the save button in the footer.
-     *
-     * @param {object} root The container element.
-     * @method enableSaveButton
-     */
-    var enableSaveButton = function(root) {
-        root.find(QuestionSelectors.actions.save).prop('disabled', false);
-    };
-
-    /**
-     * Disable the save button in the footer.
-     *
-     * @param {object} root The container element.
-     * @method disableSaveButton
-     */
-    var disableSaveButton = function(root) {
-        root.find(QuestionSelectors.actions.save).prop('disabled', true);
-    };
-
-    /**
-     * Get the serialised form data.
-     *
-     * @method getFormData
-     * @param {object} modal The modal object.
-     * @return {string} serialised form data
-     */
-    var getFormData = function(modal) {
-        return modal.getBody().find('form').serialize();
-    };
-
-    /**
-     * Set the element state to loading.
-     *
-     * @param {object} root The container element
-     * @method startLoading
-     */
-    var startLoading = function(root) {
-        var loadingIconContainer = root.find(QuestionSelectors.containers.loadingIcon);
-
-        loadingIconContainer.removeClass('hidden');
-    };
-
-    /**
-     * Remove the loading state from the element.
-     *
-     * @param {object} root The container element
-     * @method stopLoading
-     */
-    var stopLoading = function(root) {
-        var loadingIconContainer = root.find(QuestionSelectors.containers.loadingIcon);
-
-        loadingIconContainer.addClass('hidden');
-    };
-
-    /**
-     * Set the context Id data attribute on the modal.
-     *
-     * @param {Promise} modal The modal promise.
-     * @param {int} contextId The context id.
-     */
-    var setContextId = function(modal, contextId) {
-        modal.getBody().attr('data-contextid', contextId);
-    };
-
-    /**
-     * Get the context Id data attribute value from the modal body.
-     *
-     * @param {Promise} modal The modal promise.
-     * @return {int} The context id.
-     */
-    var getContextId = function(modal) {
-        return modal.getBody().data('contextid');
-    };
-
-    /**
-     * Set the question Id data attribute on the modal.
-     *
-     * @param {Promise} modal The modal promise.
-     * @param {int} questionId The question Id.
-     */
-    var setQuestionId = function(modal, questionId) {
-        modal.getBody().attr('data-questionid', questionId);
-    };
-
-    /**
-     * Get the question Id data attribute value from the modal body.
-     *
-     * @param {Promise} modal The modal promise.
-     * @return {int} The question Id.
-     */
-    var getQuestionId = function(modal) {
-        return modal.getBody().data('questionid');
-    };
-
-    /**
-     * Register event listeners for the module.
-     *
-     * @param {object} root The calendar root element
-     */
-    var registerEventListeners = function(root) {
-
-        var modalPromise = ModalSaveCancel.create({
-            large: false,
-        }).then(function(modal) {
-            // All of this code only executes once, when the modal is
-            // first created. This allows us to add any code that should
-            // only be run once, such as adding event handlers to the modal.
-            Str.get_string('questiontags', 'question')
-                .then(function(string) {
-                    modal.setTitle(string);
-                    return string;
-                })
-                .catch(Notification.exception);
-
-            modal.getRoot().on(ModalEvents.save, function(e) {
-                var form = modal.getBody().find('form');
-                form.submit();
-                e.preventDefault();
-            });
-
-            modal.getRoot().on('submit', 'form', function(e) {
-                save(modal, root).then(function() {
-                    modal.hide();
-                    location.reload();
-                    return;
-                }).catch(Notification.exception);
-
-                // Stop the form from actually submitting and prevent it's
-                // propagation because we have already handled the event.
-                e.preventDefault();
-                e.stopPropagation();
-            });
-
-            return modal;
-        });
-
-        root.on('click', QuestionSelectors.actions.edittags, function(e) {
-            e.preventDefault();
-            // eslint-disable-next-line promise/catch-or-return
-            modalPromise.then((modal) => modal.show());
-        });
-
-        // We need to add an event handler to the tags link because there are
-        // multiple links on the page and without adding a listener we don't know
-        // which one the user clicked on the show the modal.
-        root.on(CustomEvents.events.activate, QuestionSelectors.actions.edittags, function(e) {
-            var currentTarget = $(e.currentTarget);
-
-            var questionId = currentTarget.data('questionid'),
-                canTag = !!currentTarget.data('cantag'),
-                contextId = currentTarget.data('contextid');
-
-            // This code gets called each time the user clicks the tag link
-            // so we can use it to reload the contents of the tag modal.
-            modalPromise.then(function(modal) {
-                // Display spinner and disable save button.
-                disableSaveButton(root);
-                startLoading(root);
-
-                var args = {
-                    id: questionId
-                };
-
-                var tagsFragment = Fragment.loadFragment('question', 'tags_form', contextId, args);
-                modal.setBody(tagsFragment);
-
-                tagsFragment.then(function() {
-                    enableSaveButton(root);
-                    return;
-                })
-                .always(function() {
-                    // Always hide the loading spinner when the request
-                    // has completed.
-                    stopLoading(root);
-                    return;
-                })
-                .catch(Notification.exception);
-
-                // Show or hide the save button depending on whether the user
-                // has the capability to edit the tags.
-                if (canTag) {
-                    modal.getRoot().find(QuestionSelectors.actions.save).show();
-                } else {
-                    modal.getRoot().find(QuestionSelectors.actions.save).hide();
-                }
-
-                setQuestionId(modal, questionId);
-                setContextId(modal, contextId);
-
-                return modal;
-            }).catch(Notification.exception);
-
-            e.preventDefault();
-        });
-    };
-
-    /**
-     * Send the form data to the server to save question tags.
-     *
-     * @method save
-     * @param {object} modal The modal object.
-     * @param {object} root The container element.
-     * @return {object} A promise
-     */
-    var save = function(modal, root) {
-        // Display spinner and disable save button.
-        disableSaveButton(root);
-        startLoading(root);
-
-        var formData = getFormData(modal);
-        var questionId = getQuestionId(modal);
-        var contextId = getContextId(modal);
-
-        // Send the form data to the server for processing.
-        return Repository.submitTagCreateUpdateForm(questionId, contextId, formData)
-            .always(function() {
-                // Regardless of success or error we should always stop
-                // the loading icon and re-enable the buttons.
-                stopLoading(root);
-                enableSaveButton(root);
-                return;
-            })
-            .catch(Notification.exception);
-    };
-
-    return {
-        init: function(root) {
-            window.console.warn('warn: The core_question/repository has been deprecated.' +
-                'Please use qbank_tagquestion/repository instead.');
-            root = $(root);
-            registerEventListeners(root);
-        }
-    };
-});
diff --git a/question/amd/src/repository.js b/question/amd/src/repository.js
deleted file mode 100644
index f964e3686d61..000000000000
--- a/question/amd/src/repository.js
+++ /dev/null
@@ -1,54 +0,0 @@
-// This file is part of Moodle - http://moodle.org/
-//
-// Moodle is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Moodle is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
-
-/**
- * A javascript module to handle question ajax actions.
- *
- * @deprecated since Moodle 4.0
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- * @module     core_question/repository
- * @copyright  2017 Simey Lameze <lameze@moodle.com>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-define(['jquery', 'core/ajax'], function($, Ajax) {
-
-    /**
-     * Submit the form data for the question tags form.
-     *
-     * @method submitTagCreateUpdateForm
-     * @param  {number} questionId
-     * @param  {number} contextId
-     * @param {string} formdata The URL encoded values from the form
-     * @returns {promise}
-     */
-    var submitTagCreateUpdateForm = function(questionId, contextId, formdata) {
-        window.console.warn('warn: The core_question/repository has been deprecated.' +
-            'Please use qbank_tagquestion/repository instead.');
-        var request = {
-            methodname: 'core_question_submit_tags_form',
-            args: {
-                questionid: questionId,
-                contextid: contextId,
-                formdata: formdata
-            }
-        };
-
-        return Ajax.call([request])[0];
-    };
-
-    return {
-        submitTagCreateUpdateForm: submitTagCreateUpdateForm
-    };
-});
diff --git a/question/amd/src/selectors.js b/question/amd/src/selectors.js
deleted file mode 100644
index 2375e62cd9c2..000000000000
--- a/question/amd/src/selectors.js
+++ /dev/null
@@ -1,36 +0,0 @@
-// This file is part of Moodle - http://moodle.org/
-//
-// Moodle is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Moodle is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
-
-/**
- * The purpose of this module is to centralize selectors related to question.
- *
- * @deprecated since Moodle 4.0
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- * @module     core_question/selectors
- * @copyright  2018 Simey Lameze <lameze@moodle.com>
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-define([], function() {
-    window.console.warn('warn: The core_question/selectors has been deprecated. Please use qbank_tagquestion/selectors instead.');
-    return {
-        actions: {
-            save: '[data-action="save"]',
-            edittags: '[data-action="edittags"]',
-        },
-        containers: {
-            loadingIcon: '[data-region="overlay-icon-container"]',
-        },
-    };
-});
diff --git a/question/bank/statistics/tests/helper_test.php b/question/bank/statistics/tests/helper_test.php
index d8c467e5d39b..e6ba911afe03 100644
--- a/question/bank/statistics/tests/helper_test.php
+++ b/question/bank/statistics/tests/helper_test.php
@@ -51,7 +51,6 @@ public function test_get_all_places_where_questions_were_attempted(): void {
         $this->setAdminUser();
 
         $rcm = new \ReflectionMethod(helper::class, 'get_all_places_where_questions_were_attempted');
-        $rcm->setAccessible(true);
 
         // Create a course.
         $course = $this->getDataGenerator()->create_course();
@@ -252,7 +251,6 @@ private function prepare_and_submit_quizzes(array $quiz1attempts, array $quiz2at
     private function extract_item_value(all_calculated_for_qubaid_condition $statistics,
                                         int $questionid, string $item): ?float {
         $rcm = new \ReflectionMethod(helper::class, 'extract_item_value');
-        $rcm->setAccessible(true);
         return $rcm->invoke(null, $statistics, $questionid, $item);
     }
 
@@ -264,7 +262,6 @@ private function extract_item_value(all_calculated_for_qubaid_condition $statist
      */
     private function load_quiz_statistics_for_place(\context $context): ?all_calculated_for_qubaid_condition {
         $rcm = new \ReflectionMethod(helper::class, 'load_statistics_for_place');
-        $rcm->setAccessible(true);
         return $rcm->invoke(null, 'mod_quiz', $context);
     }
 
diff --git a/question/category_class.php b/question/category_class.php
deleted file mode 100644
index 9084fb6b9344..000000000000
--- a/question/category_class.php
+++ /dev/null
@@ -1,29 +0,0 @@
-<?php
-// This file is part of Moodle - http://moodle.org/
-//
-// Moodle is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Moodle is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
-
-/**
- * A class for representing question categories.
- *
- * @package    moodlecore
- * @subpackage questionbank
- * @copyright  1999 onwards Martin Dougiamas {@link http://moodle.com}
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @deprecated since Moodle 4.0 MDL-71585
- * @see \qbank_managecategories\question_category_list
- * @see \qbank_managecategories\question_category_list_item
- * @see \qbank_managecategories\question_category_object
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
\ No newline at end of file
diff --git a/question/category_form.php b/question/category_form.php
deleted file mode 100644
index 79c471c93c66..000000000000
--- a/question/category_form.php
+++ /dev/null
@@ -1,27 +0,0 @@
-<?php
-// This file is part of Moodle - http://moodle.org/
-//
-// Moodle is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Moodle is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
-
-/**
- * Defines the form for editing question categories.
- *
- * @package    moodlecore
- * @subpackage questionbank
- * @copyright  2007 Jamie Pratt me@jamiep.org
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @deprecated since Moodle 4.0 MDL-71585
- * @see qbank_managecategories\form\category_form
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
diff --git a/question/classes/external.php b/question/classes/external.php
index 72e125e71fff..1c6a2f87b585 100644
--- a/question/classes/external.php
+++ b/question/classes/external.php
@@ -124,121 +124,6 @@ public static function update_flag_returns() {
         );
     }
 
-    /**
-     * Returns description of method parameters.
-     *
-     * @return external_function_parameters.
-     * @deprecated since Moodle 4.0
-     * @see \qbank_tagquestion\external\qbank_tagquestion_external
-     * @todo Final deprecation on Moodle 4.4 MDL-72438
-     */
-    public static function submit_tags_form_parameters() {
-        return new external_function_parameters([
-                'questionid' => new external_value(PARAM_INT, 'The question id'),
-                'contextid' => new external_value(PARAM_INT, 'The editing context id'),
-                'formdata' => new external_value(PARAM_RAW, 'The data from the tag form'),
-        ]);
-    }
-
-    /**
-     * Handles the tags form submission.
-     *
-     * @param int $questionid The question id.
-     * @param int $contextid The editing context id.
-     * @param string $formdata The question tag form data in a URI encoded param string
-     * @return array The created or modified question tag
-     * @deprecated since Moodle 4.0
-     * @see \qbank_tagquestion\external\qbank_tagquestion_external
-     * @todo Final deprecation on Moodle 4.4 MDL-72438
-     */
-    public static function submit_tags_form($questionid, $contextid, $formdata) {
-        global $DB, $CFG;
-
-        $data = [];
-        $result = ['status' => false];
-
-        // Parameter validation.
-        $params = self::validate_parameters(self::submit_tags_form_parameters(), [
-            'questionid' => $questionid,
-            'contextid' => $contextid,
-            'formdata' => $formdata
-        ]);
-
-        $editingcontext = \context::instance_by_id($contextid);
-        self::validate_context($editingcontext);
-        parse_str($params['formdata'], $data);
-
-        if (!$question = $DB->get_record_sql('
-                SELECT q.*, qc.contextid
-                FROM {question} q
-                JOIN {question_categories} qc ON qc.id = q.category
-                WHERE q.id = ?', [$questionid])) {
-            throw new \moodle_exception('questiondoesnotexist', 'question');
-        }
-
-        require_once($CFG->libdir . '/questionlib.php');
-
-        $cantag = question_has_capability_on($question, 'tag');
-        $questioncontext = \context::instance_by_id($question->contextid);
-        $contexts = new \core_question\local\bank\question_edit_contexts($editingcontext);
-
-        $formoptions = [
-            'editingcontext' => $editingcontext,
-            'questioncontext' => $questioncontext,
-            'contexts' => $contexts->all()
-        ];
-
-        $mform = new \qbank_tagquestion\form\tags_form(null, $formoptions, 'post', '', null, $cantag, $data);
-
-        if ($validateddata = $mform->get_data()) {
-            if ($cantag) {
-                if (isset($validateddata->tags)) {
-                    // Due to a mform bug, if there's no tags set on the tag element, it submits the name as the value.
-                    // The only way to discover is checking if the tag element is an array.
-                    $tags = is_array($validateddata->tags) ? $validateddata->tags : [];
-
-                    core_tag_tag::set_item_tags('core_question', 'question', $validateddata->id,
-                        $questioncontext, $tags);
-
-                    $result['status'] = true;
-                }
-
-                if (isset($validateddata->coursetags)) {
-                    $coursetags = is_array($validateddata->coursetags) ? $validateddata->coursetags : [];
-                    core_tag_tag::set_item_tags('core_question', 'question', $validateddata->id,
-                        $editingcontext->get_course_context(false), $coursetags);
-
-                    $result['status'] = true;
-                }
-            }
-        }
-
-        return $result;
-    }
-
-    /**
-     * Returns description of method result value.
-     *
-     * @deprecated since Moodle 4.0
-     * @see \qbank_tagquestion\external\qbank_tagquestion_external
-     * @todo Final deprecation on Moodle 4.4 MDL-72438
-     */
-    public static function submit_tags_form_returns() {
-        return new external_single_structure([
-                'status' => new external_value(PARAM_BOOL, 'status: true if success')
-        ]);
-    }
-
-    /**
-     * Marking the method as deprecated.
-     *
-     * @return bool
-     * @todo Final deprecation on Moodle 4.4 MDL-72438
-     */
-    public static function submit_tags_form_is_deprecated() {
-        return true;
-    }
-
     /**
      * Returns description of method parameters.
      *
diff --git a/question/classes/local/bank/bulk_action_base.php b/question/classes/local/bank/bulk_action_base.php
index d96c7bbaed8a..78d73535492f 100644
--- a/question/classes/local/bank/bulk_action_base.php
+++ b/question/classes/local/bank/bulk_action_base.php
@@ -70,17 +70,9 @@ public function get_bulk_action_capabilities(): ?array {
     }
 
     /**
-     * A unique key for the bulk action, this will be used in the api to identify the action data.
-     * Every bulk must have a unique key to perform the action as a part of the form post in the base view.
-     * When questions are selected, it will post according to the key its selected from the dropdown.
-     *
-     * @return string
-     * @deprecated since Moodle 4.1
-     * @see get_key()
-     * @todo Final deprecation on Moodle 4.5 MDL-72438
+     * @deprecated since Moodle 4.0
      */
     public function get_bulk_action_key() {
-        debugging(__FUNCTION__ . " is deprecated and should no longer be used. Please use get_key() instead.", DEBUG_DEVELOPER);
-        return $this->get_key();
+        throw new \coding_exception(__FUNCTION__ . '() has been removed.');
     }
 }
diff --git a/question/classes/local/bank/view.php b/question/classes/local/bank/view.php
index f7f0bda65689..e2b3b80ee01f 100644
--- a/question/classes/local/bank/view.php
+++ b/question/classes/local/bank/view.php
@@ -28,6 +28,7 @@
 
 require_once($CFG->dirroot . '/question/editlib.php');
 
+use coding_exception;
 use core\plugininfo\qbank;
 use core\output\datafilter;
 use core_plugin_manager;
@@ -850,21 +851,10 @@ public function get_most_specific_context(): \context {
     }
 
     /**
-     * Get the URL to preview a question.
-     * @param \stdClass $questiondata the data defining the question.
-     * @return \moodle_url the URL.
      * @deprecated since Moodle 4.0
-     * @see \qbank_previewquestion\helper::question_preview_url()
-     * @todo Final deprecation on Moodle 4.4 MDL-72438
      */
-    public function preview_question_url($questiondata) {
-        debugging(
-            'Function preview_question_url() has been deprecated and moved to qbank_previewquestion plugin, ' .
-                'please use qbank_previewquestion\helper::question_preview_url() instead.',
-            DEBUG_DEVELOPER
-        );
-        return question_preview_url($questiondata->id, null, null, null, null,
-            $this->get_most_specific_context());
+    public function preview_question_url() {
+        throw new coding_exception(__FUNCTION__ . '() has been removed.');
     }
 
     /**
@@ -1510,29 +1500,17 @@ public function print_table_row($question, $rowcount): void {
     }
 
     /**
-     * Process actions for the selected action.
      * @deprecated since Moodle 4.0
-     * @todo Final deprecation on Moodle 4.4 MDL-72438
      */
     public function process_actions(): void {
-        debugging('Function process_actions() is deprecated and its code has been completely deleted.
-         Please, remove the call from your code and check core_question\local\bank\bulk_action_base
-          to learn more about bulk actions in qbank.', DEBUG_DEVELOPER);
-        // Associated code is deleted to make sure any incorrect call doesnt not cause any data loss.
+        throw new coding_exception(__FUNCTION__ . '() has been removed.');
     }
 
     /**
-     * Process actions with ui.
-     * @return bool
      * @deprecated since Moodle 4.0
-     * @todo Final deprecation on Moodle 4.4 MDL-72438
      */
-    public function process_actions_needing_ui(): bool {
-        debugging('Function process_actions_needing_ui() is deprecated and its code has been completely deleted.
-         Please, remove the call from your code and check core_question\local\bank\bulk_action_base
-          to learn more about bulk actions in qbank.', DEBUG_DEVELOPER);
-        // Associated code is deleted to make sure any incorrect call doesnt not cause any data loss.
-        return false;
+    public function process_actions_needing_ui() {
+        throw new coding_exception(__FUNCTION__ . '() has been removed.');
     }
 
     /**
diff --git a/question/deprecatedlib.php b/question/deprecatedlib.php
new file mode 100644
index 000000000000..9ab339a065ef
--- /dev/null
+++ b/question/deprecatedlib.php
@@ -0,0 +1,93 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * List of deprecated question functions.
+ *
+ * @package   core_question
+ * @copyright 2024 Mathew May <mathew.solutions>
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+/**
+ * @deprecated since Moodle 4.0 MDL-71585
+ */
+function question_is_only_child_of_top_category_in_context() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0 MDL-71585
+ */
+function question_is_top_category() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0 MDL-71585
+ */
+function question_can_delete_cat() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0
+ */
+function print_choose_qtype_to_add_form() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0
+ */
+function create_new_question_button() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0
+ */
+function core_question_output_fragment_tags_form() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0
+ */
+function question_preview_question_pluginfile() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0
+ */
+function question_preview_action_url() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0
+ */
+function question_preview_form_url() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
+
+/**
+ * @deprecated since Moodle 4.0
+ */
+function restart_preview() {
+    throw new coding_exception(__FUNCTION__ . '() has been removed.');
+}
diff --git a/question/editlib.php b/question/editlib.php
index 78559c9ac53f..b0a8d81ad5e7 100644
--- a/question/editlib.php
+++ b/question/editlib.php
@@ -113,52 +113,6 @@ function get_questions_category(object $category, bool $noparent, bool $recurse
     return $qresults;
 }
 
-/**
- * Checks whether this is the only child of a top category in a context.
- *
- * @param int $categoryid a category id.
- * @return bool
- * @deprecated since Moodle 4.0 MDL-71585
- * @see qbank_managecategories\helper
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function question_is_only_child_of_top_category_in_context($categoryid) {
-    debugging('Function question_is_only_child_of_top_category_in_context()
-    has been deprecated and moved to qbank_managecategories plugin,
-    Please use qbank_managecategories\helper::question_is_only_child_of_top_category_in_context() instead.',
-        DEBUG_DEVELOPER);
-    return \qbank_managecategories\helper::question_is_only_child_of_top_category_in_context($categoryid);
-}
-
-/**
- * Checks whether the category is a "Top" category (with no parent).
- *
- * @param int $categoryid a category id.
- * @return bool
- * @deprecated since Moodle 4.0 MDL-71585
- * @see qbank_managecategories\helper
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function question_is_top_category($categoryid) {
-    debugging('Function question_is_top_category() has been deprecated and moved to qbank_managecategories plugin,
-    Please use qbank_managecategories\helper::question_is_top_category() instead.', DEBUG_DEVELOPER);
-    return \qbank_managecategories\helper::question_is_top_category($categoryid);
-}
-
-/**
- * Ensures that this user is allowed to delete this category.
- *
- * @param int $todelete a category id.
- * @deprecated since Moodle 4.0 MDL-71585
- * @see qbank_managecategories\helper
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function question_can_delete_cat($todelete) {
-    debugging('Function question_can_delete_cat() has been deprecated and moved to qbank_managecategories plugin,
-    Please use qbank_managecategories\helper::question_can_delete_cat() instead.', DEBUG_DEVELOPER);
-    \qbank_managecategories\helper::question_can_delete_cat($todelete);
-}
-
 /**
  * Common setup for all pages for editing questions.
  * @param string $baseurl the name of the script calling this funciton. For examle 'qusetion/edit.php'.
@@ -485,57 +439,3 @@ function require_login_in_context($contextorid = null){
         require_login();
     }
 }
-
-/**
- * Print a form to let the user choose which question type to add.
- * When the form is submitted, it goes to the question.php script.
- * @param $hiddenparams hidden parameters to add to the form, in addition to
- *      the qtype radio buttons.
- * @param $allowedqtypes optional list of qtypes that are allowed. If given, only
- *      those qtypes will be shown. Example value array('description', 'multichoice').
- * @deprecated since Moodle 4.0
- * @see \qbank_editquestion\editquestion_helper::print_choose_qtype_to_add_form()
- * @todo Final deprecation of this class in moodle 4.4 MDL-72438
- */
-function print_choose_qtype_to_add_form($hiddenparams, array $allowedqtypes = null, $enablejs = true) {
-    debugging('Function print_choose_qtype_to_add_form() is deprecated,
-     please use \qbank_editquestion\editquestion_helper::print_choose_qtype_to_add_form() instead.', DEBUG_DEVELOPER);
-    global $CFG, $PAGE, $OUTPUT;
-
-    $chooser = \qbank_editquestion\qbank_chooser::get($PAGE->course, $hiddenparams, $allowedqtypes);
-    $renderer = $PAGE->get_renderer('question', 'bank');
-
-    return $renderer->render($chooser);
-}
-
-/**
- * Print a button for creating a new question. This will open question/addquestion.php,
- * which in turn goes to question/question.php before getting back to $params['returnurl']
- * (by default the question bank screen).
- *
- * @param int $categoryid The id of the category that the new question should be added to.
- * @param array $params Other paramters to add to the URL. You need either $params['cmid'] or
- *      $params['courseid'], and you should probably set $params['returnurl']
- * @param string $caption the text to display on the button.
- * @param string $tooltip a tooltip to add to the button (optional).
- * @param bool $disabled if true, the button will be disabled.
- * @deprecated since Moodle 4.0
- * @see \qbank_editquestion\editquestion_helper::create_new_question_button()
- * @todo Final deprecation of this class in moodle 4.4 MDL-72438
- */
-function create_new_question_button($categoryid, $params, $caption, $tooltip = '', $disabled = false) {
-    debugging('Function create_new_question_button() has been deprecated and moved to bank/editquestion,
-     please use qbank_editquestion\editquestion_helper::create_new_question_button() instead.', DEBUG_DEVELOPER);
-    global $CFG, $PAGE, $OUTPUT;
-    static $choiceformprinted = false;
-    $params['category'] = $categoryid;
-    $url = new moodle_url('/question/bank/editquestion/addquestion.php', $params);
-    echo $OUTPUT->single_button($url, $caption, 'get', array('disabled'=>$disabled, 'title'=>$tooltip));
-
-    if (!$choiceformprinted) {
-        echo '<div id="qtypechoicecontainer">';
-        echo print_choose_qtype_to_add_form(array());
-        echo "</div>\n";
-        $choiceformprinted = true;
-    }
-}
diff --git a/question/engine/lib.php b/question/engine/lib.php
index 213838a878d0..a181a51b90b6 100644
--- a/question/engine/lib.php
+++ b/question/engine/lib.php
@@ -477,7 +477,7 @@ public static function initialise_js() {
  */
 class question_display_options {
     /**#@+
-     * @var integer named constants for the values that most of the options take.
+     * @var int named constants for the values that most of the options take.
      */
     const SHOW_ALL = -1;
     const HIDDEN = 0;
@@ -485,13 +485,13 @@ class question_display_options {
     const EDITABLE = 2;
     /**#@-*/
 
-    /**#@+ @var integer named constants for the {@link $marks} option. */
+    /**#@+ @var int named constants for the {@see $marks} option. */
     const MAX_ONLY = 1;
     const MARK_AND_MAX = 2;
     /**#@-*/
 
     /**
-     * @var integer maximum value for the {@link $markpd} option. This is
+     * @var int maximum value for the {@see $markpd} option. This is
      * effectively set by the database structure, which uses NUMBER(12,7) columns
      * for question marks/fractions.
      */
@@ -514,33 +514,40 @@ class question_display_options {
      * This includes the green/red hilighting of the bits of their response,
      * whether the one-line summary of the current state of the question says
      * correct/incorrect or just answered.
-     * @var integer {@link question_display_options::HIDDEN} or
-     * {@link question_display_options::VISIBLE}
+     * @var int {@see question_display_options::HIDDEN} or
+     * {@see question_display_options::VISIBLE}
      */
     public $correctness = self::VISIBLE;
 
     /**
      * The the mark and/or the maximum available mark for this question be visible?
-     * @var integer {@link question_display_options::HIDDEN},
-     * {@link question_display_options::MAX_ONLY} or {@link question_display_options::MARK_AND_MAX}
+     * @var int {@see question_display_options::HIDDEN},
+     * {@see question_display_options::MAX_ONLY} or {@see question_display_options::MARK_AND_MAX}
      */
     public $marks = self::MARK_AND_MAX;
 
-    /** @var number of decimal places to use when formatting marks for output. */
+    /** @var int of decimal places to use when formatting marks for output. */
     public $markdp = 2;
 
     /**
      * Should the flag this question UI element be visible, and if so, should the
-     * flag state be changable?
-     * @var integer {@link question_display_options::HIDDEN},
-     * {@link question_display_options::VISIBLE} or {@link question_display_options::EDITABLE}
+     * flag state be changeable?
+     *
+     * @var int {@see question_display_options::HIDDEN},
+     * {@see question_display_options::VISIBLE} or {@see question_display_options::EDITABLE}
      */
     public $flags = self::VISIBLE;
 
     /**
      * Should the specific feedback be visible.
-     * @var integer {@link question_display_options::HIDDEN} or
-     * {@link question_display_options::VISIBLE}
+     *
+     * Specific feedback is typically the part of the feedback that changes based on the
+     * answer that the student gave. For example the feedback shown if a particular choice
+     * has been chosen in a multi-choice question. It also includes the combined feedback
+     * that a lost of question types have (e.g. feedback for any correct/incorrect response.)
+     *
+     * @var int {@see question_display_options::HIDDEN} or
+     * {@see question_display_options::VISIBLE}
      */
     public $feedback = self::VISIBLE;
 
@@ -548,31 +555,35 @@ class question_display_options {
      * For questions with a number of sub-parts (like matching, or
      * multiple-choice, multiple-reponse) display the number of sub-parts that
      * were correct.
-     * @var integer {@link question_display_options::HIDDEN} or
-     * {@link question_display_options::VISIBLE}
+     * @var int {@see question_display_options::HIDDEN} or
+     * {@see question_display_options::VISIBLE}
      */
     public $numpartscorrect = self::VISIBLE;
 
     /**
      * Should the general feedback be visible?
-     * @var integer {@link question_display_options::HIDDEN} or
-     * {@link question_display_options::VISIBLE}
+     *
+     * This is typically feedback shown to all students after the question
+     * is finished, irrespective of which answer they gave.
+     *
+     * @var int {@see question_display_options::HIDDEN} or
+     * {@see question_display_options::VISIBLE}
      */
     public $generalfeedback = self::VISIBLE;
 
     /**
-     * Should the automatically generated display of what the correct answer is
-     * be visible?
-     * @var integer {@link question_display_options::HIDDEN} or
-     * {@link question_display_options::VISIBLE}
+     * Should the automatically generated display of what the correct answer be visible?
+     *
+     * @var int {@see question_display_options::HIDDEN} or
+     * {@see question_display_options::VISIBLE}
      */
     public $rightanswer = self::VISIBLE;
 
     /**
      * Should the manually added marker's comment be visible. Should the link for
      * adding/editing the comment be there.
-     * @var integer {@link question_display_options::HIDDEN},
-     * {@link question_display_options::VISIBLE}, or {@link question_display_options::EDITABLE}.
+     * @var int {@see question_display_options::HIDDEN},
+     * {@see question_display_options::VISIBLE}, or {@see question_display_options::EDITABLE}.
      * Editable means that form fields are displayed inline.
      */
     public $manualcomment = self::VISIBLE;
@@ -593,8 +604,8 @@ class question_display_options {
 
     /**
      * Should the history of previous question states table be visible?
-     * @var integer {@link question_display_options::HIDDEN} or
-     * {@link question_display_options::VISIBLE}
+     * @var int {@see question_display_options::HIDDEN} or
+     * {@see question_display_options::VISIBLE}
      */
     public $history = self::HIDDEN;
 
@@ -659,9 +670,8 @@ class question_display_options {
     public ?bool $versioninfo = null;
 
     /**
-     * Set all the feedback-related fields {@link $feedback}, {@link generalfeedback},
-     * {@link rightanswer} and {@link manualcomment} to
-     * {@link question_display_options::HIDDEN}.
+     * Set all the feedback-related fields, feedback, numpartscorrect, generalfeedback,
+     * rightanswer, manualcomment} and correctness to {@see question_display_options::HIDDEN}.
      */
     public function hide_all_feedback() {
         $this->feedback = self::HIDDEN;
@@ -676,10 +686,10 @@ public function hide_all_feedback() {
      * Returns the valid choices for the number of decimal places for showing
      * question marks. For use in the user interface.
      *
-     * Calling code should probably use {@link question_engine::get_dp_options()}
+     * Calling code should probably use {@see question_engine::get_dp_options()}
      * rather than calling this method directly.
      *
-     * @return array suitable for passing to {@link html_writer::select()} or similar.
+     * @return array suitable for passing to {@see html_writer::select()} or similar.
      */
     public static function get_dp_options() {
         $options = array();
diff --git a/question/engine/renderer.php b/question/engine/renderer.php
index 44fb155e670c..29458b8fc765 100644
--- a/question/engine/renderer.php
+++ b/question/engine/renderer.php
@@ -42,24 +42,10 @@ public function get_page() {
     }
 
     /**
-     * Render an icon, optionally with the word 'Preview' beside it, to preview
-     * a given question.
-     * @param int $questionid the id of the question to be previewed.
-     * @param context $context the context in which the preview is happening.
-     *      Must be a course or category context.
-     * @param bool $showlabel if true, show the word 'Preview' after the icon.
-     *      If false, just show the icon.
      * @deprecated since Moodle 4.0
-     * @see qbank_previewquestion\output\renderer
-     * @todo Final deprecation on Moodle 4.4 MDL-72438
      */
-    public function question_preview_link($questionid, context $context, $showlabel) {
-         debugging('Function question_preview_link() has been deprecated and moved to qbank_previewquestion plugin,
-         Please use qbank_previewquestion renderer.', DEBUG_DEVELOPER);
-
-        return $this->page->get_renderer('qbank_previewquestion')->question_preview_link(
-                $questionid, $context, $showlabel
-        );
+    public function question_preview_link() {
+        throw new coding_exception(__FUNCTION__ . '() has been removed.');
     }
 
     /**
diff --git a/question/engine/tests/datalib_test.php b/question/engine/tests/datalib_test.php
index 373f5cbbaf00..df6f4f891847 100644
--- a/question/engine/tests/datalib_test.php
+++ b/question/engine/tests/datalib_test.php
@@ -272,7 +272,6 @@ public function test_cannot_save_a_step_with_a_missing_state(): void {
         $newstep = new \question_attempt_step();
         $newstep->set_state(null);
         $addstepmethod = new \ReflectionMethod('question_attempt', 'add_step');
-        $addstepmethod->setAccessible(true);
         $addstepmethod->invoke($quba->get_question_attempt($slot), $newstep);
 
         // Verify that trying to save this throws an exception.
diff --git a/question/engine/tests/question_engine_test.php b/question/engine/tests/question_engine_test.php
index edb2aa9fcf8b..10b81ecaedb2 100644
--- a/question/engine/tests/question_engine_test.php
+++ b/question/engine/tests/question_engine_test.php
@@ -299,7 +299,6 @@ public function test_render_question_number($value, string $expected): void {
         $renderer = new \core_question_renderer($PAGE, 'core_question');
         $rc = new \ReflectionClass($renderer);
         $rcm = $rc->getMethod('number');
-        $rcm->setAccessible(true);
 
         $this->assertEquals($expected, $rcm->invoke($renderer, $value));
     }
diff --git a/question/export_form.php b/question/export_form.php
deleted file mode 100644
index 666af01ef01e..000000000000
--- a/question/export_form.php
+++ /dev/null
@@ -1,27 +0,0 @@
-<?php
-// This file is part of Moodle - http://moodle.org/
-//
-// Moodle is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Moodle is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
-
-/**
- * Defines the export questions form.
- *
- * @package    moodlecore
- * @subpackage questionbank
- * @copyright  2007 Jamie Pratt me@jamiep.org
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @deprecated since Moodle 4.0 MDL-71573
- * @see qbank_exportquestions\form\export_form
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
diff --git a/question/import_form.php b/question/import_form.php
deleted file mode 100644
index 69e2ff26be0f..000000000000
--- a/question/import_form.php
+++ /dev/null
@@ -1,27 +0,0 @@
-<?php
-// This file is part of Moodle - http://moodle.org/
-//
-// Moodle is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Moodle is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
-
-/**
- * Defines the import questions form.
- *
- * @package    moodlecore
- * @subpackage questionbank
- * @copyright  2007 Jamie Pratt me@jamiep.org
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @deprecated since Moodle 4.0 MDL-71585
- * @see \qbank_importquestions\form\question_import_form
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
diff --git a/question/lib.php b/question/lib.php
index 60b59a3e6e07..758c642d979e 100644
--- a/question/lib.php
+++ b/question/lib.php
@@ -30,78 +30,6 @@
 
 require_once($CFG->dirroot . '/question/editlib.php');
 
-/**
- * Question tags fragment callback.
- *
- * @param array $args Arguments to the form.
- * @return null|string The rendered form.
- * @deprecated since Moodle 4.0
- * @see /question/bank/qbank_tagquestion/lib.php
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function core_question_output_fragment_tags_form($args) {
-    debugging('Function core_question_output_fragment_tags_form() is deprecated,
-         please use core_question_output_fragment_tags_form() from qbank_tagquestion instead.', DEBUG_DEVELOPER);
-
-    if (!empty($args['id'])) {
-        global $CFG, $DB;
-        require_once($CFG->libdir . '/questionlib.php');
-        $id = clean_param($args['id'], PARAM_INT);
-        $editingcontext = $args['context'];
-
-        // Load the question and some related information.
-        $question = $DB->get_record('question', ['id' => $id]);
-
-        if ($coursecontext = $editingcontext->get_course_context(false)) {
-            $course = $DB->get_record('course', ['id' => $coursecontext->instanceid]);
-            $filtercourses = [$course];
-        } else {
-            $filtercourses = null;
-        }
-
-        $sql = "SELECT qc.*
-                  FROM {question} q
-                  JOIN {question_versions} qv ON qv.questionid = q.id
-                  JOIN {question_bank_entries} qbe ON qbe.id = qv.questionbankentryid
-                  JOIN {question_categories} qc ON qc.id = qbe.questioncategoryid
-                 WHERE q.id = :id";
-        $category = $DB->get_record_sql($sql, ['id' => $question->id]);
-        $questioncontext = \context::instance_by_id($category->contextid);
-        $contexts = new \core_question\local\bank\question_edit_contexts($editingcontext);
-
-        // Load the question tags and filter the course tags by the current course.
-        if (core_tag_tag::is_enabled('core_question', 'question')) {
-            $tagobjectsbyquestion = core_tag_tag::get_items_tags('core_question', 'question', [$question->id]);
-            if (!empty($tagobjectsbyquestion[$question->id])) {
-                $tagobjects = $tagobjectsbyquestion[$question->id];
-                $sortedtagobjects = question_sort_tags($tagobjects,
-                        context::instance_by_id($category->contextid), $filtercourses);
-            }
-        }
-        $formoptions = [
-            'editingcontext' => $editingcontext,
-            'questioncontext' => $questioncontext,
-            'contexts' => $contexts->all()
-        ];
-        $data = [
-            'id' => $question->id,
-            'questioncategory' => $category->name,
-            'questionname' => $question->name,
-            'categoryid' => $category->id,
-            'contextid' => $category->contextid,
-            'context' => $questioncontext->get_context_name(),
-            'tags' => $sortedtagobjects->tags ?? [],
-            'coursetags' => $sortedtagobjects->coursetags ?? [],
-        ];
-
-        $cantag = question_has_capability_on($question, 'tag');
-        $mform = new \qbank_tagquestion\form\tags_form(null, $formoptions, 'post', '', null, $cantag, $data);
-        $mform->set_data($data);
-
-        return $mform->render();
-    }
-}
-
 /**
  * Question data fragment to get the question html via ajax call.
  *
diff --git a/question/move_form.php b/question/move_form.php
deleted file mode 100644
index 243972c8efa8..000000000000
--- a/question/move_form.php
+++ /dev/null
@@ -1,27 +0,0 @@
-<?php
-// This file is part of Moodle - http://moodle.org/
-//
-// Moodle is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Moodle is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
-
-/**
- * Form for moving questions between categories.
- *
- * @package    moodlecore
- * @subpackage questionbank
- * @copyright  2008 The Open University
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @deprecated since Moodle 4.0 MDL-71585
- * @see qbank_managecategories\form\question_move_form
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
diff --git a/question/previewlib.php b/question/previewlib.php
deleted file mode 100644
index 398c4dcde417..000000000000
--- a/question/previewlib.php
+++ /dev/null
@@ -1,105 +0,0 @@
-<?php
-// This file is part of Moodle - http://moodle.org/
-//
-// Moodle is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Moodle is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
-
-/**
- * Library functions used by question/preview.php.
- *
- * @package    core_question
- * @subpackage questionengine
- * @copyright  2010 The Open University
- * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- * @deprecated since Moodle 4.0
- * @see qbank_previewquestion\form\preview_options_form
- * @see qbank_previewquestion\output\question_preview_options
- */
-
-use qbank_previewquestion\question_preview_options;
-
-/**
- * Called via pluginfile.php -> question_pluginfile to serve files belonging to
- * a question in a question_attempt when that attempt is a preview.
- *
- * @package  core_question
- * @category files
- * @param stdClass $course course settings object
- * @param stdClass $context context object
- * @param string $component the name of the component we are serving files for.
- * @param string $filearea the name of the file area.
- * @param int $qubaid the question_usage this image belongs to.
- * @param int $slot the relevant slot within the usage.
- * @param array $args the remaining bits of the file path.
- * @param bool $forcedownload whether the user must be forced to download the file.
- * @param array $fileoptions
- * @return void false if file not found, does not return if found - justsend the file
- * @deprecated since Moodle 4.0
- * @see qbank_previewquestion\helper::question_preview_question_pluginfile()
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function question_preview_question_pluginfile($course, $context, $component,
-        $filearea, $qubaid, $slot, $args, $forcedownload, $fileoptions) {
-    debugging('Function question_preview_question_pluginfile() has been deprecated and moved to qbank_previewquestion plugin,
-     please use qbank_previewquestion\helper::question_preview_question_pluginfile() instead.', DEBUG_DEVELOPER);
-    qbank_previewquestion\helper::question_preview_question_pluginfile($course, $context,
-            $component, $filearea, $qubaid, $slot, $args, $forcedownload, $fileoptions);
-}
-
-/**
- * The the URL to use for actions relating to this preview.
- * @param int $questionid the question being previewed.
- * @param int $qubaid the id of the question usage for this preview.
- * @param question_preview_options $options the options in use.
- * @param context $context
- * @deprecated since Moodle 4.0
- * @see qbank_previewquestion\helper::question_preview_action_url()
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function question_preview_action_url($questionid, $qubaid,
-        question_preview_options $options, $context) {
-    debugging('Function question_preview_action_url() has been deprecated and moved to qbank_previewquestion plugin,
-     please use qbank_previewquestion\helper::question_preview_action_url() instead.', DEBUG_DEVELOPER);
-    qbank_previewquestion\helper::question_preview_action_url($questionid, $qubaid, $options, $context);
-}
-
-/**
- * The the URL to use for actions relating to this preview.
- * @param int $questionid the question being previewed.
- * @param context $context the current moodle context.
- * @param int $previewid optional previewid to sign post saved previewed answers.
- * @deprecated since Moodle 4.0
- * @see qbank_previewquestion\helper::question_preview_form_url()
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function question_preview_form_url($questionid, $context, $previewid = null) {
-    debugging('Function question_preview_form_url() has been deprecated and moved to qbank_previewquestion plugin,
-     please use qbank_previewquestion\helper::question_preview_form_url() instead.', DEBUG_DEVELOPER);
-    qbank_previewquestion\helper::question_preview_form_url($questionid, $context, $previewid);
-}
-
-/**
- * Delete the current preview, if any, and redirect to start a new preview.
- * @param int $previewid
- * @param int $questionid
- * @param object $displayoptions
- * @param object $context
- * @deprecated since Moodle 4.0
- * @see qbank_previewquestion\helper::restart_preview()
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-function restart_preview($previewid, $questionid, $displayoptions, $context) {
-    debugging('Function restart_preview() has been deprecated and moved to qbank_previewquestion plugin,
-     please use qbank_previewquestion\helper::restart_preview() instead.', DEBUG_DEVELOPER);
-    qbank_previewquestion\helper::restart_preview($previewid, $questionid, $displayoptions, $context);
-}
diff --git a/question/qengine.js b/question/qengine.js
index f5f120f119e4..1dff91347246 100644
--- a/question/qengine.js
+++ b/question/qengine.js
@@ -88,26 +88,11 @@ if (!M.core_scroll_manager.save_scroll_pos) {
         Y.log("The scroll_to_saved_pos function has been deprecated. " +
             "Please use initLinksScrollPos in core/scroll_manager instead.", 'moodle-core-notification', 'warn');
     };
-
-    /**
-     * If there is a parameter like scrollpos=123 in the URL, scroll to that saved position.
-     * @deprecated since Moodle 4.0
-     * @see core/scroll_manager
-     * @todo Final deprecation on Moodle 4.4 MDL-72438
-     */
-    M.core_scroll_manager.scroll_to_saved_pos = function(Y) {
-        callPromisedFunction(M.core_scroll_manager.scroll_to_saved_pos, Y);
-    };
 }
 /* eslint-enable */
 
 M.core_question_engine = M.core_question_engine || {};
 
-/**
- * Flag used by M.core_question_engine.prevent_repeat_submission.
- */
-M.core_question_engine.questionformalreadysubmitted = false;
-
 /**
  * Initialise a question submit button. This saves the scroll position and
  * sets the fragment on the form submit URL so the page reloads in the right place.
@@ -133,62 +118,3 @@ M.core_question_engine.init_submit_button = function(Y, button) {
         }
     }, buttonel);
 }
-
-/**
- * Initialise a form that contains questions printed using print_question.
- * This has the effect of:
- * 1. Turning off browser autocomlete.
- * 2. Stopping enter from submitting the form (or toggling the next flag) unless
- *    keyboard focus is on the submit button or the flag.
- * 3. Removes any '.questionflagsavebutton's, since we have JavaScript to toggle
- *    the flags using ajax.
- * 4. Scroll to the position indicated by scrollpos= in the URL, if it is there.
- * 5. Prevent the user from repeatedly submitting the form.
- * @param Y the Yahoo object. Needs to have the DOM and Event modules loaded.
- * @param form something that can be passed to Y.one, to find the form element.
- * @deprecated since Moodle 4.0
- * @see core_question/question_engine
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-M.core_question_engine.init_form = function(Y, form) {
-    Y.log("The core_question_engine.init_form function has been deprecated. " +
-        "Please use init_form in core_question/question_engine instead.", 'moodle-core-notification', 'warn');
-
-    Y.one(form).setAttribute('autocomplete', 'off');
-
-    Y.on('submit', M.core_question_engine.prevent_repeat_submission, form, form, Y);
-
-    Y.on('key', function (e) {
-        if (!e.target.test('a') && !e.target.test('input[type=submit]') &&
-                !e.target.test('input[type=img]') && !e.target.test('textarea') && !e.target.test('[contenteditable=true]')) {
-            e.preventDefault();
-        }
-    }, form, 'press:13');
-
-    Y.one(form).all('.questionflagsavebutton').remove();
-
-    M.core_scroll_manager.scroll_to_saved_pos(Y);
-}
-
-/**
- * Event handler to stop a question form being submitted more than once.
- * @param e the form submit event.
- * @param form the form element.
- * @deprecated since Moodle 4.0
- * @see core_question/question_engine
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- */
-M.core_question_engine.prevent_repeat_submission = function(e, Y) {
-    Y.log("The prevent_repeat_submission function has been deprecated. " +
-        "Please use preventRepeatSubmission in core_question/question_engine instead.", 'moodle-core-notification', 'warn');
-
-    if (M.core_question_engine.questionformalreadysubmitted) {
-        e.halt();
-        return;
-    }
-
-    setTimeout(function() {
-        Y.all('input[type=submit]').set('disabled', true);
-    }, 0);
-    M.core_question_engine.questionformalreadysubmitted = true;
-}
diff --git a/question/renderer.php b/question/renderer.php
index 7c4343bfa006..32aea098f770 100644
--- a/question/renderer.php
+++ b/question/renderer.php
@@ -92,18 +92,10 @@ public function render_column_sort($sortdata) {
     }
 
     /**
-     * Render a qbank_chooser.
-     *
-     * @param renderable $qbankchooser The chooser.
-     * @return string
      * @deprecated since Moodle 4.0
-     * @see \qbank_editquestion\output\renderer
-     * @todo Final deprecation on Moodle 4.4 MDL-72438
      */
-    public function render_qbank_chooser(renderable $qbankchooser) {
-        debugging('Function render_qbank_chooser is deprecated,
-         please use qbank_editquestion renderer instead.', DEBUG_DEVELOPER);
-        return $this->render_from_template('core_question/qbank_chooser', $qbankchooser->export_for_template($this));
+    public function render_qbank_chooser() {
+        throw new coding_exception(__FUNCTION__ . '() has been removed.');
     }
 
     /**
@@ -192,61 +184,31 @@ public function render_bulk_actions_ui($displaydata) {
     }
 
     /**
-     * Build the HTML for the question chooser javascript popup.
-     *
-     * @param array $real A set of real question types
-     * @param array $fake A set of fake question types
-     * @param object $course The course that will be displayed
-     * @param array $hiddenparams Any hidden parameters to add to the form
-     * @return string The composed HTML for the questionbank chooser
-     * @todo Final deprecation on Moodle 4.4 MDL-72438
+     * @deprecated since Moodle 4.0
      */
-    public function qbank_chooser($real, $fake, $course, $hiddenparams) {
-        debugging('Method core_question_bank_renderer::qbank_chooser() is deprecated, ' .
-                'see core_question_bank_renderer::render_qbank_chooser().', DEBUG_DEVELOPER);
-        return '';
+    public function qbank_chooser() {
+        throw new coding_exception(__FUNCTION__ . '() has been removed.');
     }
 
     /**
-     * Build the HTML for a specified set of question types.
-     *
-     * @param array $types A set of question types as used by the qbank_chooser_module function
-     * @return string The composed HTML for the module
-     * @todo Final deprecation on Moodle 4.4 MDL-72438
+     * @deprecated since Moodle 4.0
      */
-    protected function qbank_chooser_types($types) {
-        debugging('Method core_question_bank_renderer::qbank_chooser_types() is deprecated, ' .
-                'see core_question_bank_renderer::render_qbank_chooser().', DEBUG_DEVELOPER);
-        return '';
+    protected function qbank_chooser_types() {
+        throw new coding_exception(__FUNCTION__ . '() has been removed.');
     }
 
     /**
-     * Return the HTML for the specified question type, adding any required classes.
-     *
-     * @param object $qtype An object containing the title, and link. An icon, and help text may optionally be specified.
-     * If the module contains subtypes in the types option, then these will also be displayed.
-     * @param array $classes Additional classes to add to the encompassing div element
-     * @return string The composed HTML for the question type
-     * @todo Final deprecation on Moodle 4.4 MDL-72438
+     * @deprecated since Moodle 4.0
      */
-    protected function qbank_chooser_qtype($qtype, $classes = array()) {
-        debugging('Method core_question_bank_renderer::qbank_chooser_qtype() is deprecated, ' .
-                'see core_question_bank_renderer::render_qbank_chooser().', DEBUG_DEVELOPER);
-        return '';
+    protected function qbank_chooser_qtype() {
+        throw new coding_exception(__FUNCTION__ . '() has been removed.');
     }
 
     /**
-     * Return the title for the question bank chooser.
-     *
-     * @param string $title The language string identifier
-     * @param string $identifier The component identifier
-     * @return string The composed HTML for the title
-     * @todo Final deprecation on Moodle 4.4 MDL-72438
+     * @deprecated since Moodle 4.0
      */
-    protected function qbank_chooser_title($title, $identifier = null) {
-        debugging('Method core_question_bank_renderer::qbank_chooser_title() is deprecated, ' .
-                'see core_question_bank_renderer::render_qbank_chooser().', DEBUG_DEVELOPER);
-        return '';
+    protected function qbank_chooser_title() {
+        throw new coding_exception(__FUNCTION__ . '() has been removed.');
     }
 
 }
diff --git a/question/tests/local/statistics/statistics_bulk_loader_test.php b/question/tests/local/statistics/statistics_bulk_loader_test.php
index 6d51575a7523..81d2477e55ad 100644
--- a/question/tests/local/statistics/statistics_bulk_loader_test.php
+++ b/question/tests/local/statistics/statistics_bulk_loader_test.php
@@ -62,7 +62,6 @@ public function test_get_all_places_where_questions_were_attempted(): void {
         $this->setAdminUser();
 
         $rcm = new ReflectionMethod(statistics_bulk_loader::class, 'get_all_places_where_questions_were_attempted');
-        $rcm->setAccessible(true);
 
         // Create a course.
         $course = $this->getDataGenerator()->create_course();
@@ -273,7 +272,6 @@ private function prepare_and_submit_quizzes(array $quiz1attempts, array $quiz2at
     private function extract_item_value(all_calculated_for_qubaid_condition $statistics,
                                         int $questionid, string $item): ?float {
         $rcm = new ReflectionMethod(statistics_bulk_loader::class, 'extract_item_value');
-        $rcm->setAccessible(true);
         return $rcm->invoke(null, $statistics, $questionid, $item);
     }
 
@@ -285,7 +283,6 @@ private function extract_item_value(all_calculated_for_qubaid_condition $statist
      */
     private function load_quiz_statistics_for_place(context $context): ?all_calculated_for_qubaid_condition {
         $rcm = new ReflectionMethod(statistics_bulk_loader::class, 'load_statistics_for_place');
-        $rcm->setAccessible(true);
         return $rcm->invoke(null, 'mod_quiz', $context);
     }
 
diff --git a/question/tests/version_test.php b/question/tests/version_test.php
index 547beeae8189..516e7290a19a 100644
--- a/question/tests/version_test.php
+++ b/question/tests/version_test.php
@@ -344,7 +344,6 @@ public function test_populate_definition_latestversions() {
         $question3 = $this->qgenerator->update_question($question2, null, ['idnumber' => 'id2']);
 
         $latestversioninspector = new \ReflectionProperty('question_definition', 'latestversion');
-        $latestversioninspector->setAccessible(true);
         $this->assertEmpty(question_version_info::$pendingdefinitions);
 
         $questiondef1 = question_bank::load_question($question1->id);
diff --git a/question/type/ddwtos/tests/form/edit_form_test.php b/question/type/ddwtos/tests/form/edit_form_test.php
index 62e544369589..d0ca6bead784 100644
--- a/question/type/ddwtos/tests/form/edit_form_test.php
+++ b/question/type/ddwtos/tests/form/edit_form_test.php
@@ -72,7 +72,6 @@ public function test_number_of_choice_groups() {
         list($form) = $this->get_form('qtype_ddwtos_edit_form');
         // Use reflection to get the protected property we need.
         $property = new \ReflectionProperty('qtype_ddwtos_edit_form', '_form');
-        $property->setAccessible(true);
         $mform = $property->getValue($form);
         $choices = $mform->getElement('choices[0]');
         $groupoptions = $choices->_elements[1];
diff --git a/question/type/gapselect/tests/form/edit_form_test.php b/question/type/gapselect/tests/form/edit_form_test.php
index 17e890b4fd48..da69ef1e48e1 100644
--- a/question/type/gapselect/tests/form/edit_form_test.php
+++ b/question/type/gapselect/tests/form/edit_form_test.php
@@ -146,7 +146,6 @@ public function test_number_of_choice_groups() {
         list($form) = $this->get_form('qtype_gapselect_edit_form');
         // Use reflection to get the protected property we need.
         $property = new \ReflectionProperty('qtype_gapselect_edit_form', '_form');
-        $property->setAccessible(true);
         $mform = $property->getValue($form);
         $choices = $mform->getElement('choices[0]');
         $groupoptions = $choices->_elements[1];
diff --git a/question/type/multichoice/question.php b/question/type/multichoice/question.php
index d429de4cc9f0..83be6f26d468 100644
--- a/question/type/multichoice/question.php
+++ b/question/type/multichoice/question.php
@@ -162,10 +162,9 @@ public function check_file_access($qa, $options, $component, $filearea, $args, $
                     break;
                 }
             }
-            // Param $options->suppresschoicefeedback is a hack specific to the
-            // oumultiresponse question type. It would be good to refactor to
-            // avoid refering to it here.
-            return $options->feedback && empty($options->suppresschoicefeedback) &&
+            qtype_multichoice::support_legacy_review_options_hack($options);
+            return $options->feedback &&
+                    $options->feedback !== qtype_multichoice::COMBINED_BUT_NOT_CHOICE_FEEDBACK &&
                     $isselected;
 
         } else if ($component == 'question' && $filearea == 'hint') {
diff --git a/question/type/multichoice/questiontype.php b/question/type/multichoice/questiontype.php
index 08b743444cfb..b1d1b4ff0cfb 100644
--- a/question/type/multichoice/questiontype.php
+++ b/question/type/multichoice/questiontype.php
@@ -37,6 +37,35 @@
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 class qtype_multichoice extends question_type {
+    /**
+     * @var int a special value that can be set for {@see question_display_options::$feedback}.
+     *
+     * This is not used by the core question type, but is used by some variants of this question
+     * types in the plugins database, including qtype_oumultiresponse and qtype_answersselect.
+     *
+     * If ->feedback is set to this value, then the renderer will display the combined feebdack,
+     * but not the feedback for each specific choice.
+     */
+    const COMBINED_BUT_NOT_CHOICE_FEEDBACK = 0x100;
+
+    /**
+     * Helper to catch and update if a plugin is using the old version of the COMBINED_BUT_NOT_CHOICE_FEEDBACK thing.
+     *
+     * @param question_display_options $options to be updated before being used.
+     */
+    public static function support_legacy_review_options_hack(question_display_options $options): void {
+        if (empty($options->suppresschoicefeedback)) {
+            return; // Nothing to do.
+        }
+
+        debugging('$options->suppresschoicefeedback should no longer be used. To get a similar effect, ' .
+            'instead set $options->feedback = $options->feedback && qtype_multichoice::COMBINED_BUT_NOT_CHOICE_FEEDBACK.');
+        if ($options->feedback) {
+            $options->feedback = self::COMBINED_BUT_NOT_CHOICE_FEEDBACK;
+        }
+        unset($options->suppresschoicefeedback);
+    }
+
     public function get_question_options($question) {
         global $DB, $OUTPUT;
 
diff --git a/question/type/multichoice/renderer.php b/question/type/multichoice/renderer.php
index 1e491b034e8b..3aa476b5d63e 100644
--- a/question/type/multichoice/renderer.php
+++ b/question/type/multichoice/renderer.php
@@ -57,7 +57,7 @@ abstract protected function get_input_id(question_attempt $qa, $value);
     /**
      * Whether a choice should be considered right, wrong or partially right.
      * @param question_answer $ans representing one of the choices.
-     * @return fload 1.0, 0.0 or something in between, respectively.
+     * @return float 1.0, 0.0 or something in between, respectively.
      */
     abstract protected function is_right(question_answer $ans);
 
@@ -118,10 +118,8 @@ public function formulation_and_controls(question_attempt $qa,
                         'data-region' => 'answer-label',
                     ]);
 
-            // Param $options->suppresschoicefeedback is a hack specific to the
-            // oumultiresponse question type. It would be good to refactor to
-            // avoid refering to it here.
-            if ($options->feedback && empty($options->suppresschoicefeedback) &&
+            qtype_multichoice::support_legacy_review_options_hack($options);
+            if ($options->feedback && $options->feedback !== qtype_multichoice::COMBINED_BUT_NOT_CHOICE_FEEDBACK &&
                     $isselected && trim($ans->feedback)) {
                 $feedback[] = html_writer::tag('div',
                         $question->make_html_inline($question->format_text(
diff --git a/question/type/numerical/tests/answerprocessor_test.php b/question/type/numerical/tests/answerprocessor_test.php
index dd764665b5da..fe3f9210f119 100644
--- a/question/type/numerical/tests/answerprocessor_test.php
+++ b/question/type/numerical/tests/answerprocessor_test.php
@@ -62,7 +62,6 @@ public function test_parse_response(array $expected, $args): void {
 
         $rc = new \ReflectionClass($ap);
         $rcm = $rc->getMethod('parse_response');
-        $rcm->setAccessible(true);
 
         $this->assertEquals($expected, $rcm->invoke($ap, $args));
     }
diff --git a/question/upgrade.txt b/question/upgrade.txt
index 168ba1cf9226..b2a9d4281c81 100644
--- a/question/upgrade.txt
+++ b/question/upgrade.txt
@@ -1,5 +1,42 @@
 This files describes API changes for code that uses the question API.
 
+=== 4.4 ===
+* The following previously deprecated methods have been removed and can no longer be used:
+  - `submit_tags_form`
+  - `get_bulk_action_key`
+  - `preview_question_url`
+  - `process_actions`
+  - `process_actions_needing_ui`
+  - `question_is_only_child_of_top_category_in_context`
+  - `question_is_top_category`
+  - `question_can_delete_cat`
+  - `print_choose_qtype_to_add_form`
+  - `create_new_question_button`
+  - `question_preview_link`
+  - `core_question_output_fragment_tags_form`
+  - `render_qbank_chooser`
+  - `qbank_chooser`
+  - `qbank_chooser_types`
+  - `qbank_chooser_qtype`
+  - `qbank_chooser_title`
+
+* The following previously deprecated files have been removed and can no longer be used:
+  - `question/amd/src/edit_tags.js`
+  - `question/amd/src/repository.js`
+  - `question/amd/src/selectors.js`
+  - `question/category_class.php`
+  - `question/category_form.php`
+  - `question/export_form.php`
+  - `question/import_form.php`
+  - `question/move_form.php`
+  - `question/previewlib.php`
+  - `question/yui/src/preview/js/preview.js`
+
+* The following previously deprecated JS functions have been removed and can no longer be used:
+  - `M.core_scroll_manager.scroll_to_saved_pos`
+  - `M.core_question_engine.init_form`
+  - `M.core_question_engine.prevent_repeat_submission`
+
 === 4.3 ===
 
 1) The core_question_generator::update_question has been changed so that it no longer modifies the $question
diff --git a/question/yui/build/moodle-question-preview/moodle-question-preview-debug.js b/question/yui/build/moodle-question-preview/moodle-question-preview-debug.js
deleted file mode 100644
index 2ee4e5ad1ba0..000000000000
--- a/question/yui/build/moodle-question-preview/moodle-question-preview-debug.js
+++ /dev/null
@@ -1,57 +0,0 @@
-YUI.add('moodle-question-preview', function (Y, NAME) {
-
-// This file is part of Moodle - http://moodle.org/
-//
-// Moodle is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Moodle is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
-
-/*
- * @copyright 2014 The Open University
- * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
-/**
- * JavaScript required by the question preview pop-up.
- *
- * @deprecated since Moodle 4.0
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- * @module moodle-question-preview
- */
-
-Y.log("The moodle-question-preview module has been deprecated. " +
-    "Please use moodle-qbank_previewquestion-preview instead.", 'moodle-core-notification', 'warn');
-
-M.question = M.question || {};
-M.question.preview = M.question.preview || {};
-
-/*
- * Initialise JavaScript-specific parts of the question preview popup.
- */
-M.question.preview.init = function() {
-    M.core_question_engine.init_form(Y, '#responseform');
-
-    // Add a close button to the window.
-    var closebutton = Y.Node.create('<input type="button" class="btn btn-secondary mb-1"/>')
-            .set('value', M.util.get_string('closepreview', 'question'));
-
-    closebutton.on('click', function() {
-        window.close();
-    });
-    Y.one('#previewcontrols').append(closebutton);
-
-    // Stop a question form being submitted more than once.
-    Y.on('submit', M.core_question_engine.prevent_repeat_submission, '#mform1', null, Y);
-};
-
-
-}, '@VERSION@', {"requires": ["base", "dom", "event-delegate", "event-key", "core_question_engine"]});
diff --git a/question/yui/build/moodle-question-preview/moodle-question-preview-min.js b/question/yui/build/moodle-question-preview/moodle-question-preview-min.js
deleted file mode 100644
index 6e579dee24f1..000000000000
--- a/question/yui/build/moodle-question-preview/moodle-question-preview-min.js
+++ /dev/null
@@ -1 +0,0 @@
-YUI.add("moodle-question-preview",function(n,e){M.question=M.question||{},M.question.preview=M.question.preview||{},M.question.preview.init=function(){M.core_question_engine.init_form(n,"#responseform");var e=n.Node.create('<input type="button" class="btn btn-secondary mb-1"/>').set("value",M.util.get_string("closepreview","question"));e.on("click",function(){window.close()}),n.one("#previewcontrols").append(e),n.on("submit",M.core_question_engine.prevent_repeat_submission,"#mform1",null,n)}},"@VERSION@",{requires:["base","dom","event-delegate","event-key","core_question_engine"]});
\ No newline at end of file
diff --git a/question/yui/build/moodle-question-preview/moodle-question-preview.js b/question/yui/build/moodle-question-preview/moodle-question-preview.js
deleted file mode 100644
index bb1772cb3281..000000000000
--- a/question/yui/build/moodle-question-preview/moodle-question-preview.js
+++ /dev/null
@@ -1,55 +0,0 @@
-YUI.add('moodle-question-preview', function (Y, NAME) {
-
-// This file is part of Moodle - http://moodle.org/
-//
-// Moodle is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Moodle is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
-
-/*
- * @copyright 2014 The Open University
- * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
-/**
- * JavaScript required by the question preview pop-up.
- *
- * @deprecated since Moodle 4.0
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- * @module moodle-question-preview
- */
-
-
-M.question = M.question || {};
-M.question.preview = M.question.preview || {};
-
-/*
- * Initialise JavaScript-specific parts of the question preview popup.
- */
-M.question.preview.init = function() {
-    M.core_question_engine.init_form(Y, '#responseform');
-
-    // Add a close button to the window.
-    var closebutton = Y.Node.create('<input type="button" class="btn btn-secondary mb-1"/>')
-            .set('value', M.util.get_string('closepreview', 'question'));
-
-    closebutton.on('click', function() {
-        window.close();
-    });
-    Y.one('#previewcontrols').append(closebutton);
-
-    // Stop a question form being submitted more than once.
-    Y.on('submit', M.core_question_engine.prevent_repeat_submission, '#mform1', null, Y);
-};
-
-
-}, '@VERSION@', {"requires": ["base", "dom", "event-delegate", "event-key", "core_question_engine"]});
diff --git a/question/yui/src/preview/build.json b/question/yui/src/preview/build.json
deleted file mode 100644
index ace36838476f..000000000000
--- a/question/yui/src/preview/build.json
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-    "name": "moodle-question-preview",
-    "builds": {
-        "moodle-question-preview": {
-            "jsfiles": [
-                "preview.js"
-            ]
-        }
-    }
-}
diff --git a/question/yui/src/preview/js/preview.js b/question/yui/src/preview/js/preview.js
deleted file mode 100644
index 2b90ad51ed72..000000000000
--- a/question/yui/src/preview/js/preview.js
+++ /dev/null
@@ -1,52 +0,0 @@
-// This file is part of Moodle - http://moodle.org/
-//
-// Moodle is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Moodle is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
-
-/*
- * @copyright 2014 The Open University
- * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
- */
-
-/**
- * JavaScript required by the question preview pop-up.
- *
- * @deprecated since Moodle 4.0
- * @todo Final deprecation on Moodle 4.4 MDL-72438
- * @module moodle-question-preview
- */
-
-Y.log("The moodle-question-preview module has been deprecated. " +
-    "Please use moodle-qbank_previewquestion-preview instead.", 'moodle-core-notification', 'warn');
-
-M.question = M.question || {};
-M.question.preview = M.question.preview || {};
-
-/*
- * Initialise JavaScript-specific parts of the question preview popup.
- */
-M.question.preview.init = function() {
-    M.core_question_engine.init_form(Y, '#responseform');
-
-    // Add a close button to the window.
-    var closebutton = Y.Node.create('<input type="button" class="btn btn-secondary mb-1"/>')
-            .set('value', M.util.get_string('closepreview', 'question'));
-
-    closebutton.on('click', function() {
-        window.close();
-    });
-    Y.one('#previewcontrols').append(closebutton);
-
-    // Stop a question form being submitted more than once.
-    Y.on('submit', M.core_question_engine.prevent_repeat_submission, '#mform1', null, Y);
-};
diff --git a/question/yui/src/preview/meta/preview.json b/question/yui/src/preview/meta/preview.json
deleted file mode 100644
index 9291a133c207..000000000000
--- a/question/yui/src/preview/meta/preview.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-  "moodle-question-preview": {
-    "requires": [
-        "base",
-        "dom",
-        "event-delegate",
-        "event-key",
-        "core_question_engine"
-    ]
-  }
-}
diff --git a/report/log/tests/lib_test.php b/report/log/tests/lib_test.php
index 722d1b9bb0b5..c3984cf12c22 100644
--- a/report/log/tests/lib_test.php
+++ b/report/log/tests/lib_test.php
@@ -91,7 +91,6 @@ public function test_report_log_myprofile_navigation() {
         report_log_myprofile_navigation($this->tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayHasKey('alllogs', $nodes->getValue($this->tree));
         $this->assertArrayHasKey('todayslogs', $nodes->getValue($this->tree));
     }
@@ -108,7 +107,6 @@ public function test_report_log_myprofile_navigation_without_permission() {
         report_log_myprofile_navigation($this->tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayNotHasKey('alllogs', $nodes->getValue($this->tree));
         $this->assertArrayNotHasKey('todayslogs', $nodes->getValue($this->tree));
     }
diff --git a/report/outline/tests/lib_test.php b/report/outline/tests/lib_test.php
index 5a3d16989bee..bffc1fc2dbf7 100644
--- a/report/outline/tests/lib_test.php
+++ b/report/outline/tests/lib_test.php
@@ -100,7 +100,6 @@ public function test_report_outline_myprofile_navigation() {
         report_outline_myprofile_navigation($this->tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayHasKey('outline', $nodes->getValue($this->tree));
         $this->assertArrayHasKey('complete', $nodes->getValue($this->tree));
     }
@@ -115,7 +114,6 @@ public function test_report_outline_myprofile_navigation_without_permission() {
         report_outline_myprofile_navigation($this->tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayNotHasKey('outline', $nodes->getValue($this->tree));
         $this->assertArrayNotHasKey('complete', $nodes->getValue($this->tree));
     }
diff --git a/report/stats/tests/lib_test.php b/report/stats/tests/lib_test.php
index 0da9f4246064..f0d901b30428 100644
--- a/report/stats/tests/lib_test.php
+++ b/report/stats/tests/lib_test.php
@@ -89,7 +89,6 @@ public function test_report_stats_myprofile_navigation() {
         report_stats_myprofile_navigation($this->tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayHasKey('stats', $nodes->getValue($this->tree));
     }
 
@@ -106,7 +105,6 @@ public function test_report_stats_myprofile_navigation_stats_disabled() {
         report_stats_myprofile_navigation($this->tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayNotHasKey('stats', $nodes->getValue($this->tree));
     }
 
@@ -124,7 +122,6 @@ public function test_report_stats_myprofile_navigation_without_permission() {
         report_stats_myprofile_navigation($this->tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayNotHasKey('stats', $nodes->getValue($this->tree));
     }
 }
diff --git a/report/usersessions/tests/lib_test.php b/report/usersessions/tests/lib_test.php
index 30e1609bea6c..7e0962995b24 100644
--- a/report/usersessions/tests/lib_test.php
+++ b/report/usersessions/tests/lib_test.php
@@ -71,7 +71,6 @@ public function test_report_usersessions_myprofile_navigation_as_admin() {
         report_usersessions_myprofile_navigation($this->tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayNotHasKey('usersessions', $nodes->getValue($this->tree));
     }
 
@@ -85,7 +84,6 @@ public function test_report_usersessions_myprofile_navigation_as_current_user()
         report_usersessions_myprofile_navigation($this->tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayHasKey('usersessions', $nodes->getValue($this->tree));
     }
 
@@ -99,7 +97,6 @@ public function test_report_usersessions_myprofile_navigation_as_guest() {
         report_usersessions_myprofile_navigation($this->tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayNotHasKey('usersessions', $nodes->getValue($this->tree));
     }
 
@@ -115,7 +112,6 @@ public function test_report_usersessions_myprofile_navigation_without_permission
         report_usersessions_myprofile_navigation($this->tree, $this->user, $iscurrentuser, $this->course);
         $reflector = new \ReflectionObject($this->tree);
         $nodes = $reflector->getProperty('nodes');
-        $nodes->setAccessible(true);
         $this->assertArrayNotHasKey('usersessions', $nodes->getValue($this->tree));
 
     }
diff --git a/reportbuilder/tests/datasource_test.php b/reportbuilder/tests/datasource_test.php
index 66a01fcad2e7..7b0bae707902 100644
--- a/reportbuilder/tests/datasource_test.php
+++ b/reportbuilder/tests/datasource_test.php
@@ -89,7 +89,6 @@ public function test_add_columns_from_entity(
         $instance = $this->get_datasource_test_source();
 
         $method = (new ReflectionClass($instance))->getMethod('add_columns_from_entity');
-        $method->setAccessible(true);
         $method->invoke($instance, 'user', $include, $exclude);
 
         // Get all our user entity columns.
@@ -146,7 +145,6 @@ public function test_add_filters_from_entity(
         $instance = $this->get_datasource_test_source();
 
         $method = (new ReflectionClass($instance))->getMethod('add_filters_from_entity');
-        $method->setAccessible(true);
         $method->invoke($instance, 'user', $include, $exclude);
 
         // Get all our user entity filters.
@@ -203,7 +201,6 @@ public function test_add_conditions_from_entity(
         $instance = $this->get_datasource_test_source();
 
         $method = (new ReflectionClass($instance))->getMethod('add_conditions_from_entity');
-        $method->setAccessible(true);
         $method->invoke($instance, 'user', $include, $exclude);
 
         // Get all our user entity conditions.
@@ -225,7 +222,6 @@ public function test_add_all_from_entity(): void {
         $instance = $this->get_datasource_test_source();
 
         $method = (new ReflectionClass($instance))->getMethod('add_all_from_entity');
-        $method->setAccessible(true);
         $method->invoke($instance, 'user', ['username'], ['firstname'], ['lastname']);
 
         // Assert the column we added (plus one we didn't).
diff --git a/reportbuilder/tests/local/report/base_test.php b/reportbuilder/tests/local/report/base_test.php
index 63ea6aa792db..25c71114834e 100644
--- a/reportbuilder/tests/local/report/base_test.php
+++ b/reportbuilder/tests/local/report/base_test.php
@@ -198,7 +198,6 @@ public function test_annotate_entity(): void {
         $systemreport = system_report_factory::create(system_report_available::class, context_system::instance());
 
         $method = (new ReflectionClass($systemreport))->getMethod('annotate_entity');
-        $method->setAccessible(true);
 
         $method->invoke($systemreport, 'test', new lang_string('yes'));
         $this->assertEquals(new lang_string('yes'), $systemreport->get_entity_title('test'));
@@ -213,7 +212,6 @@ public function test_annotate_entity_invalid(): void {
         $systemreport = system_report_factory::create(system_report_available::class, context_system::instance());
 
         $method = (new ReflectionClass($systemreport))->getMethod('annotate_entity');
-        $method->setAccessible(true);
 
         $this->expectException(coding_exception::class);
         $this->expectExceptionMessage('Entity name must be comprised of alphanumeric character, underscore or dash');
@@ -229,7 +227,6 @@ public function test_annotate_entity_duplicate(): void {
         $systemreport = system_report_factory::create(system_report_available::class, context_system::instance());
 
         $method = (new ReflectionClass($systemreport))->getMethod('annotate_entity');
-        $method->setAccessible(true);
 
         $method->invoke($systemreport, 'test', new lang_string('yes'));
 
diff --git a/repository/dropbox/tests/api_test.php b/repository/dropbox/tests/api_test.php
index cec67079f1aa..1d2635f7c92c 100644
--- a/repository/dropbox/tests/api_test.php
+++ b/repository/dropbox/tests/api_test.php
@@ -160,7 +160,6 @@ public function test_check_and_handle_api_errors($info, $data, $exception, $exce
 
         $rc = new \ReflectionClass(\repository_dropbox\dropbox::class);
         $rcm = $rc->getMethod('check_and_handle_api_errors');
-        $rcm->setAccessible(true);
 
         if ($exception) {
             $this->expectException($exception);
@@ -334,7 +333,6 @@ public function test_fetch_dropbox_data_endpoint() {
         // Make the call.
         $rc = new \ReflectionClass(\repository_dropbox\dropbox::class);
         $rcm = $rc->getMethod('fetch_dropbox_data');
-        $rcm->setAccessible(true);
         $rcm->invoke($mock, $endpoint);
     }
 
@@ -361,7 +359,6 @@ public function test_fetch_dropbox_data_postfields_null() {
         // Make the call.
         $rc = new \ReflectionClass(\repository_dropbox\dropbox::class);
         $rcm = $rc->getMethod('fetch_dropbox_data');
-        $rcm->setAccessible(true);
         $rcm->invoke($mock, $endpoint, null);
     }
 
@@ -389,7 +386,6 @@ public function test_fetch_dropbox_data_postfields_data() {
         // Make the call.
         $rc = new \ReflectionClass(\repository_dropbox\dropbox::class);
         $rcm = $rc->getMethod('fetch_dropbox_data');
-        $rcm->setAccessible(true);
         $rcm->invoke($mock, $endpoint, $data);
     }
 
@@ -430,7 +426,6 @@ public function test_fetch_dropbox_data_recurse_on_additional_records() {
         // Make the call.
         $rc = new \ReflectionClass(\repository_dropbox\dropbox::class);
         $rcm = $rc->getMethod('fetch_dropbox_data');
-        $rcm->setAccessible(true);
         $result = $rcm->invoke($mock, $endpoint, null, 'matches');
 
         $this->assertEquals([
@@ -496,7 +491,6 @@ public function test_fetch_dropbox_content() {
         // Make the call.
         $rc = new \ReflectionClass(\repository_dropbox\dropbox::class);
         $rcm = $rc->getMethod('fetch_dropbox_content');
-        $rcm->setAccessible(true);
         $result = $rcm->invoke($mock, $endpoint, $data);
 
         $this->assertEquals($response, $result);
diff --git a/repository/nextcloud/tests/access_controlled_link_manager_test.php b/repository/nextcloud/tests/access_controlled_link_manager_test.php
index 4dc409c964e4..502329cd55c7 100644
--- a/repository/nextcloud/tests/access_controlled_link_manager_test.php
+++ b/repository/nextcloud/tests/access_controlled_link_manager_test.php
@@ -612,7 +612,6 @@ public function test_get_share_information_from_shareid() {
     protected function set_private_property($value, $propertyname, $class) {
         $refclient = new \ReflectionClass($class);
         $private = $refclient->getProperty($propertyname);
-        $private->setAccessible(true);
         $private->setValue($class, $value);
         return $private;
     }
@@ -626,7 +625,6 @@ protected function set_private_property($value, $propertyname, $class) {
     protected function get_private_property($propertyname, $class) {
         $refclient = new \ReflectionClass($class);
         $private = $refclient->getProperty($propertyname);
-        $private->setAccessible(true);
         $property = $private->getValue($private);
         return $property;
     }
diff --git a/repository/nextcloud/tests/lib_test.php b/repository/nextcloud/tests/lib_test.php
index 190b1ba30b33..a0d20e8a3151 100644
--- a/repository/nextcloud/tests/lib_test.php
+++ b/repository/nextcloud/tests/lib_test.php
@@ -618,7 +618,6 @@ public function test_initiate_webdavclient() {
         $refclient = new \ReflectionClass($dav);
 
         $property = $refclient->getProperty('_port');
-        $property->setAccessible(true);
 
         $port = $property->getValue($dav);
 
@@ -977,7 +976,6 @@ public function test_sync_reference(array $storedfileargs, $storedfilemethodsmoc
                 $curl->method('get_info')->willReturn(['http_code' => 200]);
 
                 $reflectionproperty = new \ReflectionProperty($this->repo, 'curl');
-                $reflectionproperty->setAccessible(true);
                 $reflectionproperty->setValue($this->repo, $curl);
             }
         } else {
@@ -1002,7 +1000,6 @@ public function test_sync_reference(array $storedfileargs, $storedfilemethodsmoc
     protected function set_private_property($value, $propertyname) {
         $refclient = new \ReflectionClass($this->repo);
         $private = $refclient->getProperty($propertyname);
-        $private->setAccessible(true);
         $private->setValue($this->repo, $value);
 
         return $private;
diff --git a/theme/boost/scss/moodle/debug.scss b/theme/boost/scss/moodle/debug.scss
index 52079e67e14d..d439ffc304c6 100644
--- a/theme/boost/scss/moodle/debug.scss
+++ b/theme/boost/scss/moodle/debug.scss
@@ -12,6 +12,10 @@ body.behat-site {
     .stickyfooter {
         position: inherit;
         z-index: inherit;
+        .sticky-footer-content-wrapper {
+            padding: 0;
+            margin: 0;
+        }
     }
 
     // We need more spacing in action menus so behat does not click on the wrong menu item.
diff --git a/theme/boost/scss/moodle/forms.scss b/theme/boost/scss/moodle/forms.scss
index 57a91eb4c821..8e856746f4d6 100644
--- a/theme/boost/scss/moodle/forms.scss
+++ b/theme/boost/scss/moodle/forms.scss
@@ -480,3 +480,24 @@ textarea[data-auto-rows] {
         padding-left: 0;
     }
 }
+
+// Remove the margins that come with the icon.
+.toggle-sensitive-btn .icon {
+    margin-right: 0;
+}
+
+// Input group elements display border radius depending on the proximity of other elements.
+// This corrects border radius of the input when 'small screen only' mode hides the toggle button.
+@media (min-width: 576px) {
+    .toggle-sensitive-wrapper.small-screens-only.input-group:not(.has-validation) > {
+        .form-control:not(:last-child) {
+            @include border-radius($input-border-radius);
+        }
+        .form-control-lg:not(:last-child) {
+            @include border-radius($input-border-radius-lg);
+        }
+        .input-group-append .toggle-sensitive-btn {
+            display: none;
+        }
+    }
+}
diff --git a/theme/boost/scss/moodle/sticky-footer.scss b/theme/boost/scss/moodle/sticky-footer.scss
index 8e10985bde4d..8c78f113aa05 100644
--- a/theme/boost/scss/moodle/sticky-footer.scss
+++ b/theme/boost/scss/moodle/sticky-footer.scss
@@ -11,7 +11,7 @@ body {
     position: fixed;
     right: 0;
     left: 0;
-    height: $stickyfooter-height;
+    min-height: $stickyfooter-height;
     bottom: calc(#{$stickyfooter-height} * -1);
     transition: bottom .5s;
     z-index: $zindex-fixed;
diff --git a/theme/boost/style/moodle.css b/theme/boost/style/moodle.css
index 316487b30620..0aee9585c7e4 100644
--- a/theme/boost/style/moodle.css
+++ b/theme/boost/style/moodle.css
@@ -33258,6 +33258,21 @@ textarea[data-auto-rows] {
   padding-left: 0;
 }
 
+.toggle-sensitive-btn .icon {
+  margin-right: 0;
+}
+
+@media (min-width: 576px) {
+  .toggle-sensitive-wrapper.small-screens-only.input-group:not(.has-validation) > .form-control:not(:last-child) {
+    border-radius: 0.5rem;
+  }
+  .toggle-sensitive-wrapper.small-screens-only.input-group:not(.has-validation) > .form-control-lg:not(:last-child) {
+    border-radius: 0.6rem;
+  }
+  .toggle-sensitive-wrapper.small-screens-only.input-group:not(.has-validation) > .input-group-append .toggle-sensitive-btn {
+    display: none;
+  }
+}
 .pagelayout-login #region-main {
   border: 0;
   background-color: inherit;
@@ -36008,6 +36023,11 @@ body.behat-site .stickyfooter {
   position: inherit;
   z-index: inherit;
 }
+body.behat-site.hasstickyfooter .stickyfooter .sticky-footer-content-wrapper,
+body.behat-site .stickyfooter .sticky-footer-content-wrapper {
+  padding: 0;
+  margin: 0;
+}
 body.behat-site .dropdown-item {
   margin-top: 4px !important; /* stylelint-disable declaration-no-important */
 }
@@ -36097,7 +36117,7 @@ body {
   position: fixed;
   right: 0;
   left: 0;
-  height: max(80px, 0.9375rem * 3);
+  min-height: max(80px, 0.9375rem * 3);
   bottom: calc(max(80px, 0.9375rem * 3) * -1);
   transition: bottom 0.5s;
   z-index: 1030;
diff --git a/theme/boost/tests/boostnavbar_test.php b/theme/boost/tests/boostnavbar_test.php
index 86e756b54dbf..6c9c8e0102fc 100644
--- a/theme/boost/tests/boostnavbar_test.php
+++ b/theme/boost/tests/boostnavbar_test.php
@@ -209,12 +209,10 @@ public function test_remove_no_link_items(array $setup, bool $removesectionnodes
 
         $rc = new \ReflectionClass(boostnavbar::class);
         $rcp = $rc->getProperty('items');
-        $rcp->setAccessible(true);
         $rcp->setValue($boostnavbar, $page->navbar->get_items());
 
         // Make the call to the function.
         $rcm = $rc->getMethod('remove_no_link_items');
-        $rcm->setAccessible(true);
         $rcm->invoke($boostnavbar, $removesectionnodes);
 
         // Get the value for the class variable that the function modifies.
@@ -388,12 +386,10 @@ public function test_remove_duplicate_items(array $navbarnodes, array $expected)
 
         $rc = new \ReflectionClass(boostnavbar::class);
         $rcp = $rc->getProperty('items');
-        $rcp->setAccessible(true);
         $rcp->setValue($boostnavbar, $page->navbar->get_items());
 
         // Make the call to the function.
         $rcm = $rc->getMethod('remove_duplicate_items');
-        $rcm->setAccessible(true);
         $rcm->invoke($boostnavbar);
 
         // Get the value for the class variable that the function modifies.
@@ -527,12 +523,10 @@ public function test_remove_items_that_exist_in_navigation(string $navmenu, arra
 
         $rc = new \ReflectionClass(boostnavbar::class);
         $rcp = $rc->getProperty('items');
-        $rcp->setAccessible(true);
         $rcp->setValue($boostnavbar, $page->navbar->get_items());
 
         // Make the call to the function.
         $rcm = $rc->getMethod('remove_items_that_exist_in_navigation');
-        $rcm->setAccessible(true);
         $rcm->invoke($boostnavbar, $navigationmenu);
 
         // Get the value for the class variable that the function modifies.
diff --git a/theme/classic/style/moodle.css b/theme/classic/style/moodle.css
index d28086a753b9..a29a087e8546 100644
--- a/theme/classic/style/moodle.css
+++ b/theme/classic/style/moodle.css
@@ -33258,6 +33258,21 @@ textarea[data-auto-rows] {
   padding-left: 0;
 }
 
+.toggle-sensitive-btn .icon {
+  margin-right: 0;
+}
+
+@media (min-width: 576px) {
+  .toggle-sensitive-wrapper.small-screens-only.input-group:not(.has-validation) > .form-control:not(:last-child) {
+    border-radius: 0.25rem;
+  }
+  .toggle-sensitive-wrapper.small-screens-only.input-group:not(.has-validation) > .form-control-lg:not(:last-child) {
+    border-radius: 0.3rem;
+  }
+  .toggle-sensitive-wrapper.small-screens-only.input-group:not(.has-validation) > .input-group-append .toggle-sensitive-btn {
+    display: none;
+  }
+}
 .pagelayout-login #region-main {
   border: 0;
   background-color: inherit;
@@ -35942,6 +35957,11 @@ body.behat-site .stickyfooter {
   position: inherit;
   z-index: inherit;
 }
+body.behat-site.hasstickyfooter .stickyfooter .sticky-footer-content-wrapper,
+body.behat-site .stickyfooter .sticky-footer-content-wrapper {
+  padding: 0;
+  margin: 0;
+}
 body.behat-site .dropdown-item {
   margin-top: 4px !important; /* stylelint-disable declaration-no-important */
 }
@@ -36031,7 +36051,7 @@ body {
   position: fixed;
   right: 0;
   left: 0;
-  height: max(80px, 0.9375rem * 3);
+  min-height: max(80px, 0.9375rem * 3);
   bottom: calc(max(80px, 0.9375rem * 3) * -1);
   transition: bottom 0.5s;
   z-index: 1030;
diff --git a/theme/upgrade.txt b/theme/upgrade.txt
index d7f16177da5d..5610a75127dd 100644
--- a/theme/upgrade.txt
+++ b/theme/upgrade.txt
@@ -5,6 +5,7 @@ information provided here is intended especially for theme designer.
 * Theme selection is now performed using cards and modals.
 * The 'choosereadme' string for each theme is expected to be plain text. HTML content will not render when displayed in the modal.
 * Theme selector page has been moved to admin/themeselector.php (previously theme/index.php)
+* Moodleforms no longer use tag 'fieldset' for groups without labels (legends). Avoid targeting tag 'fieldset' in the theme CSS.
 
 === 4.3 ===
 * The core_renderer::htmllize_file_tree method has been deprecated. This was missed before Moodle 2.0.
diff --git a/version.php b/version.php
index d168756d0147..524a65dd4a0c 100644
--- a/version.php
+++ b/version.php
@@ -29,9 +29,9 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$version  = 2024030800.00;              // YYYYMMDD      = weekly release date of this DEV branch.
+$version  = 2024031300.00;              // YYYYMMDD      = weekly release date of this DEV branch.
                                         //         RR    = release increments - 00 in DEV branches.
                                         //           .XX = incremental changes.
-$release  = '4.4dev+ (Build: 20240308)'; // Human-friendly version name
+$release  = '4.4dev+ (Build: 20240313)'; // Human-friendly version name
 $branch   = '404';                     // This version's branch.
 $maturity = MATURITY_ALPHA;             // This version's maturity level.
diff --git a/webservice/rest/tests/server_test.php b/webservice/rest/tests/server_test.php
index e1b781b1faa5..c1cb4319cd7f 100644
--- a/webservice/rest/tests/server_test.php
+++ b/webservice/rest/tests/server_test.php
@@ -207,7 +207,6 @@ public function xmlize_provider() {
      */
     public function test_xmlize($description, $value, $expected) {
         $method = new \ReflectionMethod('webservice_rest_server', 'xmlize_result');
-        $method->setAccessible(true);
         $this->assertEquals($expected, $method->invoke(null, $value, $description));
     }